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Comparing libev/ev.c (file contents):
Revision 1.343 by root, Fri Apr 2 21:03:46 2010 UTC vs.
Revision 1.520 by root, Sat Dec 28 07:44:15 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/* 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 */
202 252
203/* try to deduce the maximum number of signals on this platform */ 253/* try to deduce the maximum number of signals on this platform */
204#if defined (EV_NSIG) 254#if defined EV_NSIG
205/* use what's provided */ 255/* use what's provided */
206#elif defined (NSIG) 256#elif defined NSIG
207# define EV_NSIG (NSIG) 257# define EV_NSIG (NSIG)
208#elif defined(_NSIG) 258#elif defined _NSIG
209# define EV_NSIG (_NSIG) 259# define EV_NSIG (_NSIG)
210#elif defined (SIGMAX) 260#elif defined SIGMAX
211# define EV_NSIG (SIGMAX+1) 261# define EV_NSIG (SIGMAX+1)
212#elif defined (SIG_MAX) 262#elif defined SIG_MAX
213# define EV_NSIG (SIG_MAX+1) 263# define EV_NSIG (SIG_MAX+1)
214#elif defined (_SIG_MAX) 264#elif defined _SIG_MAX
215# define EV_NSIG (_SIG_MAX+1) 265# define EV_NSIG (_SIG_MAX+1)
216#elif defined (MAXSIG) 266#elif defined MAXSIG
217# define EV_NSIG (MAXSIG+1) 267# define EV_NSIG (MAXSIG+1)
218#elif defined (MAX_SIG) 268#elif defined MAX_SIG
219# define EV_NSIG (MAX_SIG+1) 269# define EV_NSIG (MAX_SIG+1)
220#elif defined (SIGARRAYSIZE) 270#elif defined SIGARRAYSIZE
221# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ 271# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
222#elif defined (_sys_nsig) 272#elif defined _sys_nsig
223# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 273# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
224#else 274#else
225# error "unable to find value for NSIG, please report" 275# define EV_NSIG (8 * sizeof (sigset_t) + 1)
226/* to make it compile regardless, just remove the above line, */ 276#endif
227/* but consider reporting it, too! :) */ 277
228# define EV_NSIG 65 278#ifndef EV_USE_FLOOR
279# define EV_USE_FLOOR 0
229#endif 280#endif
230 281
231#ifndef EV_USE_CLOCK_SYSCALL 282#ifndef EV_USE_CLOCK_SYSCALL
232# if __linux && __GLIBC__ >= 2 283# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
233# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS 284# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
234# else 285# else
235# define EV_USE_CLOCK_SYSCALL 0 286# define EV_USE_CLOCK_SYSCALL 0
236# endif 287# endif
237#endif 288#endif
238 289
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
239#ifndef EV_USE_MONOTONIC 299#ifndef EV_USE_MONOTONIC
240# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 300# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
241# define EV_USE_MONOTONIC EV_FEATURE_OS 301# define EV_USE_MONOTONIC EV_FEATURE_OS
242# else 302# else
243# define EV_USE_MONOTONIC 0 303# define EV_USE_MONOTONIC 0
244# endif 304# endif
245#endif 305#endif
… …
282 342
283#ifndef EV_USE_PORT 343#ifndef EV_USE_PORT
284# define EV_USE_PORT 0 344# define EV_USE_PORT 0
285#endif 345#endif
286 346
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
287#ifndef EV_USE_INOTIFY 363#ifndef EV_USE_INOTIFY
288# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 364# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
289# define EV_USE_INOTIFY EV_FEATURE_OS 365# define EV_USE_INOTIFY EV_FEATURE_OS
290# else 366# else
291# define EV_USE_INOTIFY 0 367# define EV_USE_INOTIFY 0
… …
314# else 390# else
315# define EV_USE_SIGNALFD 0 391# define EV_USE_SIGNALFD 0
316# endif 392# endif
317#endif 393#endif
318 394
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
319#if 0 /* debugging */ 403#if 0 /* debugging */
320# define EV_VERIFY 3 404# define EV_VERIFY 3
321# define EV_USE_4HEAP 1 405# define EV_USE_4HEAP 1
322# define EV_HEAP_CACHE_AT 1 406# define EV_HEAP_CACHE_AT 1
323#endif 407#endif
… …
332 416
333#ifndef EV_HEAP_CACHE_AT 417#ifndef EV_HEAP_CACHE_AT
334# define EV_HEAP_CACHE_AT EV_FEATURE_DATA 418# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
335#endif 419#endif
336 420
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
337/* 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, */
338/* which makes programs even slower. might work on other unices, too. */ 438/* which makes programs even slower. might work on other unices, too. */
339#if EV_USE_CLOCK_SYSCALL 439#if EV_USE_CLOCK_SYSCALL
340# include <syscall.h> 440# include <sys/syscall.h>
341# ifdef SYS_clock_gettime 441# ifdef SYS_clock_gettime
342# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 442# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
343# undef EV_USE_MONOTONIC 443# undef EV_USE_MONOTONIC
344# define EV_USE_MONOTONIC 1 444# define EV_USE_MONOTONIC 1
445# define EV_NEED_SYSCALL 1
345# else 446# else
346# undef EV_USE_CLOCK_SYSCALL 447# undef EV_USE_CLOCK_SYSCALL
347# define EV_USE_CLOCK_SYSCALL 0 448# define EV_USE_CLOCK_SYSCALL 0
348# endif 449# endif
349#endif 450#endif
350 451
351/* 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 */
352 453
353#ifdef _AIX
354/* AIX has a completely broken poll.h header */
355# undef EV_USE_POLL
356# define EV_USE_POLL 0
357#endif
358
359#ifndef CLOCK_MONOTONIC 454#ifndef CLOCK_MONOTONIC
360# undef EV_USE_MONOTONIC 455# undef EV_USE_MONOTONIC
361# define EV_USE_MONOTONIC 0 456# define EV_USE_MONOTONIC 0
362#endif 457#endif
363 458
… …
369#if !EV_STAT_ENABLE 464#if !EV_STAT_ENABLE
370# undef EV_USE_INOTIFY 465# undef EV_USE_INOTIFY
371# define EV_USE_INOTIFY 0 466# define EV_USE_INOTIFY 0
372#endif 467#endif
373 468
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
374#if !EV_USE_NANOSLEEP 477#if !EV_USE_NANOSLEEP
375# ifndef _WIN32 478/* hp-ux has it in sys/time.h, which we unconditionally include above */
479# if !defined _WIN32 && !defined __hpux
376# include <sys/select.h> 480# include <sys/select.h>
377# endif 481# endif
378#endif 482#endif
379 483
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
380#if EV_USE_INOTIFY 509#if EV_USE_INOTIFY
381# include <sys/utsname.h>
382# include <sys/statfs.h> 510# include <sys/statfs.h>
383# include <sys/inotify.h> 511# include <sys/inotify.h>
384/* 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 */
385# ifndef IN_DONT_FOLLOW 513# ifndef IN_DONT_FOLLOW
386# undef EV_USE_INOTIFY 514# undef EV_USE_INOTIFY
387# define EV_USE_INOTIFY 0 515# define EV_USE_INOTIFY 0
388# endif 516# endif
389#endif 517#endif
390 518
391#if EV_SELECT_IS_WINSOCKET
392# include <winsock.h>
393#endif
394
395#if EV_USE_EVENTFD 519#if EV_USE_EVENTFD
396/* 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 */
397# include <stdint.h> 521# include <stdint.h>
398# ifndef EFD_NONBLOCK 522# ifndef EFD_NONBLOCK
399# define EFD_NONBLOCK O_NONBLOCK 523# define EFD_NONBLOCK O_NONBLOCK
400# endif 524# endif
401# ifndef EFD_CLOEXEC 525# ifndef EFD_CLOEXEC
… …
403# define EFD_CLOEXEC O_CLOEXEC 527# define EFD_CLOEXEC O_CLOEXEC
404# else 528# else
405# define EFD_CLOEXEC 02000000 529# define EFD_CLOEXEC 02000000
406# endif 530# endif
407# endif 531# endif
408# ifdef __cplusplus
409extern "C" {
410# endif
411int (eventfd) (unsigned int initval, int flags); 532EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
412# ifdef __cplusplus
413}
414# endif
415#endif 533#endif
416 534
417#if EV_USE_SIGNALFD 535#if EV_USE_SIGNALFD
418/* 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 */
419# include <stdint.h> 537# include <stdint.h>
420# ifndef SFD_NONBLOCK 538# ifndef SFD_NONBLOCK
421# define SFD_NONBLOCK O_NONBLOCK 539# define SFD_NONBLOCK O_NONBLOCK
422# endif 540# endif
423# ifndef SFD_CLOEXEC 541# ifndef SFD_CLOEXEC
… …
425# define SFD_CLOEXEC O_CLOEXEC 543# define SFD_CLOEXEC O_CLOEXEC
426# else 544# else
427# define SFD_CLOEXEC 02000000 545# define SFD_CLOEXEC 02000000
428# endif 546# endif
429# endif 547# endif
430# ifdef __cplusplus
431extern "C" {
432# endif
433int signalfd (int fd, const sigset_t *mask, int flags); 548EV_CPP (extern "C") int (signalfd) (int fd, const sigset_t *mask, int flags);
434 549
435struct signalfd_siginfo 550struct signalfd_siginfo
436{ 551{
437 uint32_t ssi_signo; 552 uint32_t ssi_signo;
438 char pad[128 - sizeof (uint32_t)]; 553 char pad[128 - sizeof (uint32_t)];
439}; 554};
440# ifdef __cplusplus 555#endif
441} 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
442# endif 564# endif
443#endif 565#endif
444 566
445 567/*****************************************************************************/
446/**/
447 568
448#if EV_VERIFY >= 3 569#if EV_VERIFY >= 3
449# define EV_FREQUENT_CHECK ev_verify (EV_A) 570# define EV_FREQUENT_CHECK ev_verify (EV_A)
450#else 571#else
451# define EV_FREQUENT_CHECK do { } while (0) 572# define EV_FREQUENT_CHECK do { } while (0)
452#endif 573#endif
453 574
454/* 575/*
455 * This is used to avoid floating point rounding problems. 576 * This is used to work around floating point rounding problems.
456 * It is added to ev_rt_now when scheduling periodics
457 * to ensure progress, time-wise, even when rounding
458 * errors are against us.
459 * This value is good at least till the year 4000. 577 * This value is good at least till the year 4000.
460 * Better solutions welcome.
461 */ 578 */
462#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 */
463 581
464#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) */
465#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) */
466 584
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;
467#if __GNUC__ >= 4 658 #if __GNUC__
468# define expect(expr,value) __builtin_expect ((expr),(value)) 659 typedef signed long long int64_t;
469# 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
470#else 674#else
471# define expect(expr,value) (expr) 675 #include <inttypes.h>
472# define noinline 676 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
473# if __STDC_VERSION__ < 199901L && __GNUC__ < 2 677 #define ECB_PTRSIZE 8
474# define inline 678 #else
679 #define ECB_PTRSIZE 4
680 #endif
475# 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
476#endif 692 #endif
693#endif
477 694
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. */
478#define expect_false(expr) expect ((expr) != 0, 0) 1026#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
479#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
480#define inline_size static inline 1640#define inline_size ecb_inline
481 1641
482#if EV_FEATURE_CODE 1642#if EV_FEATURE_CODE
483# define inline_speed static inline 1643# define inline_speed ecb_inline
484#else 1644#else
485# define inline_speed static noinline 1645# define inline_speed ecb_noinline static
486#endif 1646#endif
1647
1648/*****************************************************************************/
1649/* raw syscall wrappers */
1650
1651#if EV_NEED_SYSCALL
1652
1653#include <sys/syscall.h>
1654
1655/*
1656 * define some syscall wrappers for common architectures
1657 * this is mostly for nice looks during debugging, not performance.
1658 * our syscalls return < 0, not == -1, on error. which is good
1659 * enough for linux aio.
1660 * TODO: arm is also common nowadays, maybe even mips and x86
1661 * TODO: after implementing this, it suddenly looks like overkill, but its hard to remove...
1662 */
1663#if __GNUC__ && __linux && ECB_AMD64 && !EV_FEATURE_CODE
1664 /* the costly errno access probably kills this for size optimisation */
1665
1666 #define ev_syscall(nr,narg,arg1,arg2,arg3,arg4,arg5,arg6) \
1667 ({ \
1668 long res; \
1669 register unsigned long r6 __asm__ ("r9" ); \
1670 register unsigned long r5 __asm__ ("r8" ); \
1671 register unsigned long r4 __asm__ ("r10"); \
1672 register unsigned long r3 __asm__ ("rdx"); \
1673 register unsigned long r2 __asm__ ("rsi"); \
1674 register unsigned long r1 __asm__ ("rdi"); \
1675 if (narg >= 6) r6 = (unsigned long)(arg6); \
1676 if (narg >= 5) r5 = (unsigned long)(arg5); \
1677 if (narg >= 4) r4 = (unsigned long)(arg4); \
1678 if (narg >= 3) r3 = (unsigned long)(arg3); \
1679 if (narg >= 2) r2 = (unsigned long)(arg2); \
1680 if (narg >= 1) r1 = (unsigned long)(arg1); \
1681 __asm__ __volatile__ ( \
1682 "syscall\n\t" \
1683 : "=a" (res) \
1684 : "0" (nr), "r" (r1), "r" (r2), "r" (r3), "r" (r4), "r" (r5) \
1685 : "cc", "r11", "cx", "memory"); \
1686 errno = -res; \
1687 res; \
1688 })
1689
1690#endif
1691
1692#ifdef ev_syscall
1693 #define ev_syscall0(nr) ev_syscall (nr, 0, 0, 0, 0, 0, 0, 0)
1694 #define ev_syscall1(nr,arg1) ev_syscall (nr, 1, arg1, 0, 0, 0, 0, 0)
1695 #define ev_syscall2(nr,arg1,arg2) ev_syscall (nr, 2, arg1, arg2, 0, 0, 0, 0)
1696 #define ev_syscall3(nr,arg1,arg2,arg3) ev_syscall (nr, 3, arg1, arg2, arg3, 0, 0, 0)
1697 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) ev_syscall (nr, 3, arg1, arg2, arg3, arg4, 0, 0)
1698 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) ev_syscall (nr, 5, arg1, arg2, arg3, arg4, arg5, 0)
1699 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) ev_syscall (nr, 6, arg1, arg2, arg3, arg4, arg5,arg6)
1700#else
1701 #define ev_syscall0(nr) syscall (nr)
1702 #define ev_syscall1(nr,arg1) syscall (nr, arg1)
1703 #define ev_syscall2(nr,arg1,arg2) syscall (nr, arg1, arg2)
1704 #define ev_syscall3(nr,arg1,arg2,arg3) syscall (nr, arg1, arg2, arg3)
1705 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) syscall (nr, arg1, arg2, arg3, arg4)
1706 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) syscall (nr, arg1, arg2, arg3, arg4, arg5)
1707 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) syscall (nr, arg1, arg2, arg3, arg4, arg5,arg6)
1708#endif
1709
1710#endif
1711
1712/*****************************************************************************/
487 1713
488#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1714#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
489 1715
490#if EV_MINPRI == EV_MAXPRI 1716#if EV_MINPRI == EV_MAXPRI
491# define ABSPRI(w) (((W)w), 0) 1717# define ABSPRI(w) (((W)w), 0)
492#else 1718#else
493# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1719# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
494#endif 1720#endif
495 1721
496#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1722#define EMPTY /* required for microsofts broken pseudo-c compiler */
497#define EMPTY2(a,b) /* used to suppress some warnings */
498 1723
499typedef ev_watcher *W; 1724typedef ev_watcher *W;
500typedef ev_watcher_list *WL; 1725typedef ev_watcher_list *WL;
501typedef ev_watcher_time *WT; 1726typedef ev_watcher_time *WT;
502 1727
503#define ev_active(w) ((W)(w))->active 1728#define ev_active(w) ((W)(w))->active
504#define ev_at(w) ((WT)(w))->at 1729#define ev_at(w) ((WT)(w))->at
505 1730
506#if EV_USE_REALTIME 1731#if EV_USE_REALTIME
507/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 1732/* sig_atomic_t is used to avoid per-thread variables or locking but still */
508/* giving it a reasonably high chance of working on typical architetcures */ 1733/* giving it a reasonably high chance of working on typical architectures */
509static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 1734static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
510#endif 1735#endif
511 1736
512#if EV_USE_MONOTONIC 1737#if EV_USE_MONOTONIC
513static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 1738static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
… …
527# include "ev_win32.c" 1752# include "ev_win32.c"
528#endif 1753#endif
529 1754
530/*****************************************************************************/ 1755/*****************************************************************************/
531 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
532#if EV_AVOID_STDIO 1853#if EV_AVOID_STDIO
533static void noinline 1854ecb_noinline ecb_cold
1855static void
534ev_printerr (const char *msg) 1856ev_printerr (const char *msg)
535{ 1857{
536 write (STDERR_FILENO, msg, strlen (msg)); 1858 write (STDERR_FILENO, msg, strlen (msg));
537} 1859}
538#endif 1860#endif
539 1861
540static void (*syserr_cb)(const char *msg); 1862static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
541 1863
1864ecb_cold
542void 1865void
543ev_set_syserr_cb (void (*cb)(const char *msg)) 1866ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
544{ 1867{
545 syserr_cb = cb; 1868 syserr_cb = cb;
546} 1869}
547 1870
548static void noinline 1871ecb_noinline ecb_cold
1872static void
549ev_syserr (const char *msg) 1873ev_syserr (const char *msg)
550{ 1874{
551 if (!msg) 1875 if (!msg)
552 msg = "(libev) system error"; 1876 msg = "(libev) system error";
553 1877
554 if (syserr_cb) 1878 if (syserr_cb)
555 syserr_cb (msg); 1879 syserr_cb (msg);
556 else 1880 else
557 { 1881 {
558#if EV_AVOID_STDIO 1882#if EV_AVOID_STDIO
559 const char *err = strerror (errno);
560
561 ev_printerr (msg); 1883 ev_printerr (msg);
562 ev_printerr (": "); 1884 ev_printerr (": ");
563 ev_printerr (err); 1885 ev_printerr (strerror (errno));
564 ev_printerr ("\n"); 1886 ev_printerr ("\n");
565#else 1887#else
566 perror (msg); 1888 perror (msg);
567#endif 1889#endif
568 abort (); 1890 abort ();
569 } 1891 }
570} 1892}
571 1893
572static void * 1894static void *
573ev_realloc_emul (void *ptr, long size) 1895ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
574{ 1896{
575#if __GLIBC__
576 return realloc (ptr, size);
577#else
578 /* some systems, notably openbsd and darwin, fail to properly 1897 /* some systems, notably openbsd and darwin, fail to properly
579 * 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
580 * 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.
581 */ 1902 */
582 1903
583 if (size) 1904 if (size)
584 return realloc (ptr, size); 1905 return realloc (ptr, size);
585 1906
586 free (ptr); 1907 free (ptr);
587 return 0; 1908 return 0;
588#endif
589} 1909}
590 1910
591static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1911static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
592 1912
1913ecb_cold
593void 1914void
594ev_set_allocator (void *(*cb)(void *ptr, long size)) 1915ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
595{ 1916{
596 alloc = cb; 1917 alloc = cb;
597} 1918}
598 1919
599inline_speed void * 1920inline_speed void *
… …
602 ptr = alloc (ptr, size); 1923 ptr = alloc (ptr, size);
603 1924
604 if (!ptr && size) 1925 if (!ptr && size)
605 { 1926 {
606#if EV_AVOID_STDIO 1927#if EV_AVOID_STDIO
607 ev_printerr ("libev: memory allocation failed, aborting.\n"); 1928 ev_printerr ("(libev) memory allocation failed, aborting.\n");
608#else 1929#else
609 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1930 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
610#endif 1931#endif
611 abort (); 1932 abort ();
612 } 1933 }
613 1934
614 return ptr; 1935 return ptr;
… …
626typedef struct 1947typedef struct
627{ 1948{
628 WL head; 1949 WL head;
629 unsigned char events; /* the events watched for */ 1950 unsigned char events; /* the events watched for */
630 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) */
631 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 */
632 unsigned char unused; 1953 unsigned char eflags; /* flags field for use by backends */
633#if EV_USE_EPOLL 1954#if EV_USE_EPOLL
634 unsigned int egen; /* generation counter to counter epoll bugs */ 1955 unsigned int egen; /* generation counter to counter epoll bugs */
635#endif 1956#endif
636#if EV_SELECT_IS_WINSOCKET 1957#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
637 SOCKET handle; 1958 SOCKET handle;
1959#endif
1960#if EV_USE_IOCP
1961 OVERLAPPED or, ow;
638#endif 1962#endif
639} ANFD; 1963} ANFD;
640 1964
641/* stores the pending event set for a given watcher */ 1965/* stores the pending event set for a given watcher */
642typedef struct 1966typedef struct
… …
684 #undef VAR 2008 #undef VAR
685 }; 2009 };
686 #include "ev_wrap.h" 2010 #include "ev_wrap.h"
687 2011
688 static struct ev_loop default_loop_struct; 2012 static struct ev_loop default_loop_struct;
689 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 */
690 2014
691#else 2015#else
692 2016
693 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 */
694 #define VAR(name,decl) static decl; 2018 #define VAR(name,decl) static decl;
695 #include "ev_vars.h" 2019 #include "ev_vars.h"
696 #undef VAR 2020 #undef VAR
697 2021
698 static int ev_default_loop_ptr; 2022 static int ev_default_loop_ptr;
699 2023
700#endif 2024#endif
701 2025
702#if EV_FEATURE_API 2026#if EV_FEATURE_API
703# 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)
704# 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)
705# define EV_INVOKE_PENDING invoke_cb (EV_A) 2029# define EV_INVOKE_PENDING invoke_cb (EV_A)
706#else 2030#else
707# define EV_RELEASE_CB (void)0 2031# define EV_RELEASE_CB (void)0
708# define EV_ACQUIRE_CB (void)0 2032# define EV_ACQUIRE_CB (void)0
709# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 2033# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
710#endif 2034#endif
711 2035
712#define EVUNLOOP_RECURSE 0x80 2036#define EVBREAK_RECURSE 0x80
713 2037
714/*****************************************************************************/ 2038/*****************************************************************************/
715 2039
716#ifndef EV_HAVE_EV_TIME 2040#ifndef EV_HAVE_EV_TIME
717ev_tstamp 2041ev_tstamp
718ev_time (void) 2042ev_time (void) EV_NOEXCEPT
719{ 2043{
720#if EV_USE_REALTIME 2044#if EV_USE_REALTIME
721 if (expect_true (have_realtime)) 2045 if (ecb_expect_true (have_realtime))
722 { 2046 {
723 struct timespec ts; 2047 struct timespec ts;
724 clock_gettime (CLOCK_REALTIME, &ts); 2048 clock_gettime (CLOCK_REALTIME, &ts);
725 return ts.tv_sec + ts.tv_nsec * 1e-9; 2049 return EV_TS_GET (ts);
726 } 2050 }
727#endif 2051#endif
728 2052
2053 {
729 struct timeval tv; 2054 struct timeval tv;
730 gettimeofday (&tv, 0); 2055 gettimeofday (&tv, 0);
731 return tv.tv_sec + tv.tv_usec * 1e-6; 2056 return EV_TV_GET (tv);
2057 }
732} 2058}
733#endif 2059#endif
734 2060
735inline_size ev_tstamp 2061inline_size ev_tstamp
736get_clock (void) 2062get_clock (void)
737{ 2063{
738#if EV_USE_MONOTONIC 2064#if EV_USE_MONOTONIC
739 if (expect_true (have_monotonic)) 2065 if (ecb_expect_true (have_monotonic))
740 { 2066 {
741 struct timespec ts; 2067 struct timespec ts;
742 clock_gettime (CLOCK_MONOTONIC, &ts); 2068 clock_gettime (CLOCK_MONOTONIC, &ts);
743 return ts.tv_sec + ts.tv_nsec * 1e-9; 2069 return EV_TS_GET (ts);
744 } 2070 }
745#endif 2071#endif
746 2072
747 return ev_time (); 2073 return ev_time ();
748} 2074}
749 2075
750#if EV_MULTIPLICITY 2076#if EV_MULTIPLICITY
751ev_tstamp 2077ev_tstamp
752ev_now (EV_P) 2078ev_now (EV_P) EV_NOEXCEPT
753{ 2079{
754 return ev_rt_now; 2080 return ev_rt_now;
755} 2081}
756#endif 2082#endif
757 2083
758void 2084void
759ev_sleep (ev_tstamp delay) 2085ev_sleep (ev_tstamp delay) EV_NOEXCEPT
760{ 2086{
761 if (delay > 0.) 2087 if (delay > EV_TS_CONST (0.))
762 { 2088 {
763#if EV_USE_NANOSLEEP 2089#if EV_USE_NANOSLEEP
764 struct timespec ts; 2090 struct timespec ts;
765 2091
766 ts.tv_sec = (time_t)delay; 2092 EV_TS_SET (ts, delay);
767 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
768
769 nanosleep (&ts, 0); 2093 nanosleep (&ts, 0);
770#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) */
771 Sleep ((unsigned long)(delay * 1e3)); 2097 Sleep ((unsigned long)(EV_TS_TO_MSEC (delay)));
772#else 2098#else
773 struct timeval tv; 2099 struct timeval tv;
774
775 tv.tv_sec = (time_t)delay;
776 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
777 2100
778 /* 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 */
779 /* something not guaranteed by newer posix versions, but guaranteed */ 2102 /* something not guaranteed by newer posix versions, but guaranteed */
780 /* by older ones */ 2103 /* by older ones */
2104 EV_TV_SET (tv, delay);
781 select (0, 0, 0, 0, &tv); 2105 select (0, 0, 0, 0, &tv);
782#endif 2106#endif
783 } 2107 }
784} 2108}
785 2109
786/*****************************************************************************/ 2110/*****************************************************************************/
787 2111
788#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 2112#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
789 2113
790/* find a suitable new size for the given array, */ 2114/* find a suitable new size for the given array, */
791/* hopefully by rounding to a ncie-to-malloc size */ 2115/* hopefully by rounding to a nice-to-malloc size */
792inline_size int 2116inline_size int
793array_nextsize (int elem, int cur, int cnt) 2117array_nextsize (int elem, int cur, int cnt)
794{ 2118{
795 int ncur = cur + 1; 2119 int ncur = cur + 1;
796 2120
797 do 2121 do
798 ncur <<= 1; 2122 ncur <<= 1;
799 while (cnt > ncur); 2123 while (cnt > ncur);
800 2124
801 /* 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 */
802 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 2126 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
803 { 2127 {
804 ncur *= elem; 2128 ncur *= elem;
805 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);
806 ncur = ncur - sizeof (void *) * 4; 2130 ncur = ncur - sizeof (void *) * 4;
… …
808 } 2132 }
809 2133
810 return ncur; 2134 return ncur;
811} 2135}
812 2136
813static noinline void * 2137ecb_noinline ecb_cold
2138static void *
814array_realloc (int elem, void *base, int *cur, int cnt) 2139array_realloc (int elem, void *base, int *cur, int cnt)
815{ 2140{
816 *cur = array_nextsize (elem, *cur, cnt); 2141 *cur = array_nextsize (elem, *cur, cnt);
817 return ev_realloc (base, elem * *cur); 2142 return ev_realloc (base, elem * *cur);
818} 2143}
819 2144
2145#define array_needsize_noinit(base,offset,count)
2146
820#define array_init_zero(base,count) \ 2147#define array_needsize_zerofill(base,offset,count) \
821 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 2148 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
822 2149
823#define array_needsize(type,base,cur,cnt,init) \ 2150#define array_needsize(type,base,cur,cnt,init) \
824 if (expect_false ((cnt) > (cur))) \ 2151 if (ecb_expect_false ((cnt) > (cur))) \
825 { \ 2152 { \
826 int ocur_ = (cur); \ 2153 ecb_unused int ocur_ = (cur); \
827 (base) = (type *)array_realloc \ 2154 (base) = (type *)array_realloc \
828 (sizeof (type), (base), &(cur), (cnt)); \ 2155 (sizeof (type), (base), &(cur), (cnt)); \
829 init ((base) + (ocur_), (cur) - ocur_); \ 2156 init ((base), ocur_, ((cur) - ocur_)); \
830 } 2157 }
831 2158
832#if 0 2159#if 0
833#define array_slim(type,stem) \ 2160#define array_slim(type,stem) \
834 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2161 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
… …
843 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
844 2171
845/*****************************************************************************/ 2172/*****************************************************************************/
846 2173
847/* dummy callback for pending events */ 2174/* dummy callback for pending events */
848static void noinline 2175ecb_noinline
2176static void
849pendingcb (EV_P_ ev_prepare *w, int revents) 2177pendingcb (EV_P_ ev_prepare *w, int revents)
850{ 2178{
851} 2179}
852 2180
853void noinline 2181ecb_noinline
2182void
854ev_feed_event (EV_P_ void *w, int revents) 2183ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
855{ 2184{
856 W w_ = (W)w; 2185 W w_ = (W)w;
857 int pri = ABSPRI (w_); 2186 int pri = ABSPRI (w_);
858 2187
859 if (expect_false (w_->pending)) 2188 if (ecb_expect_false (w_->pending))
860 pendings [pri][w_->pending - 1].events |= revents; 2189 pendings [pri][w_->pending - 1].events |= revents;
861 else 2190 else
862 { 2191 {
863 w_->pending = ++pendingcnt [pri]; 2192 w_->pending = ++pendingcnt [pri];
864 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2193 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
865 pendings [pri][w_->pending - 1].w = w_; 2194 pendings [pri][w_->pending - 1].w = w_;
866 pendings [pri][w_->pending - 1].events = revents; 2195 pendings [pri][w_->pending - 1].events = revents;
867 } 2196 }
2197
2198 pendingpri = NUMPRI - 1;
868} 2199}
869 2200
870inline_speed void 2201inline_speed void
871feed_reverse (EV_P_ W w) 2202feed_reverse (EV_P_ W w)
872{ 2203{
873 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2204 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
874 rfeeds [rfeedcnt++] = w; 2205 rfeeds [rfeedcnt++] = w;
875} 2206}
876 2207
877inline_size void 2208inline_size void
878feed_reverse_done (EV_P_ int revents) 2209feed_reverse_done (EV_P_ int revents)
… …
913inline_speed void 2244inline_speed void
914fd_event (EV_P_ int fd, int revents) 2245fd_event (EV_P_ int fd, int revents)
915{ 2246{
916 ANFD *anfd = anfds + fd; 2247 ANFD *anfd = anfds + fd;
917 2248
918 if (expect_true (!anfd->reify)) 2249 if (ecb_expect_true (!anfd->reify))
919 fd_event_nocheck (EV_A_ fd, revents); 2250 fd_event_nocheck (EV_A_ fd, revents);
920} 2251}
921 2252
922void 2253void
923ev_feed_fd_event (EV_P_ int fd, int revents) 2254ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
924{ 2255{
925 if (fd >= 0 && fd < anfdmax) 2256 if (fd >= 0 && fd < anfdmax)
926 fd_event_nocheck (EV_A_ fd, revents); 2257 fd_event_nocheck (EV_A_ fd, revents);
927} 2258}
928 2259
… …
931inline_size void 2262inline_size void
932fd_reify (EV_P) 2263fd_reify (EV_P)
933{ 2264{
934 int i; 2265 int i;
935 2266
2267 /* most backends do not modify the fdchanges list in backend_modfiy.
2268 * except io_uring, which has fixed-size buffers which might force us
2269 * to handle events in backend_modify, causing fdchangesd to be amended,
2270 * which could result in an endless loop.
2271 * to avoid this, we do not dynamically handle fds that were added
2272 * during fd_reify. that menas thast for those backends, fdchangecnt
2273 * might be non-zero during poll, which must cause them to not block.
2274 * to not put too much of a burden on other backends, this detail
2275 * needs to be handled in the backend.
2276 */
2277 int changecnt = fdchangecnt;
2278
2279#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
936 for (i = 0; i < fdchangecnt; ++i) 2280 for (i = 0; i < changecnt; ++i)
2281 {
2282 int fd = fdchanges [i];
2283 ANFD *anfd = anfds + fd;
2284
2285 if (anfd->reify & EV__IOFDSET && anfd->head)
2286 {
2287 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
2288
2289 if (handle != anfd->handle)
2290 {
2291 unsigned long arg;
2292
2293 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
2294
2295 /* handle changed, but fd didn't - we need to do it in two steps */
2296 backend_modify (EV_A_ fd, anfd->events, 0);
2297 anfd->events = 0;
2298 anfd->handle = handle;
2299 }
2300 }
2301 }
2302#endif
2303
2304 for (i = 0; i < changecnt; ++i)
937 { 2305 {
938 int fd = fdchanges [i]; 2306 int fd = fdchanges [i];
939 ANFD *anfd = anfds + fd; 2307 ANFD *anfd = anfds + fd;
940 ev_io *w; 2308 ev_io *w;
941 2309
942 unsigned char events = 0; 2310 unsigned char o_events = anfd->events;
2311 unsigned char o_reify = anfd->reify;
943 2312
944 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2313 anfd->reify = 0;
945 events |= (unsigned char)w->events;
946 2314
947#if EV_SELECT_IS_WINSOCKET 2315 /*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
948 if (events)
949 { 2316 {
950 unsigned long arg; 2317 anfd->events = 0;
951 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 2318
952 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 2319 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
2320 anfd->events |= (unsigned char)w->events;
2321
2322 if (o_events != anfd->events)
2323 o_reify = EV__IOFDSET; /* actually |= */
953 } 2324 }
954#endif
955 2325
956 { 2326 if (o_reify & EV__IOFDSET)
957 unsigned char o_events = anfd->events;
958 unsigned char o_reify = anfd->reify;
959
960 anfd->reify = 0;
961 anfd->events = events;
962
963 if (o_events != events || o_reify & EV__IOFDSET)
964 backend_modify (EV_A_ fd, o_events, events); 2327 backend_modify (EV_A_ fd, o_events, anfd->events);
965 } 2328 }
966 }
967 2329
2330 /* normally, fdchangecnt hasn't changed. if it has, then new fds have been added.
2331 * this is a rare case (see beginning comment in this function), so we copy them to the
2332 * front and hope the backend handles this case.
2333 */
2334 if (ecb_expect_false (fdchangecnt != changecnt))
2335 memmove (fdchanges, fdchanges + changecnt, (fdchangecnt - changecnt) * sizeof (*fdchanges));
2336
968 fdchangecnt = 0; 2337 fdchangecnt -= changecnt;
969} 2338}
970 2339
971/* something about the given fd changed */ 2340/* something about the given fd changed */
972inline_size void 2341inline_size
2342void
973fd_change (EV_P_ int fd, int flags) 2343fd_change (EV_P_ int fd, int flags)
974{ 2344{
975 unsigned char reify = anfds [fd].reify; 2345 unsigned char reify = anfds [fd].reify;
976 anfds [fd].reify |= flags; 2346 anfds [fd].reify |= flags;
977 2347
978 if (expect_true (!reify)) 2348 if (ecb_expect_true (!reify))
979 { 2349 {
980 ++fdchangecnt; 2350 ++fdchangecnt;
981 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2351 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
982 fdchanges [fdchangecnt - 1] = fd; 2352 fdchanges [fdchangecnt - 1] = fd;
983 } 2353 }
984} 2354}
985 2355
986/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2356/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
987inline_speed void 2357inline_speed ecb_cold void
988fd_kill (EV_P_ int fd) 2358fd_kill (EV_P_ int fd)
989{ 2359{
990 ev_io *w; 2360 ev_io *w;
991 2361
992 while ((w = (ev_io *)anfds [fd].head)) 2362 while ((w = (ev_io *)anfds [fd].head))
… …
995 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2365 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
996 } 2366 }
997} 2367}
998 2368
999/* check whether the given fd is actually valid, for error recovery */ 2369/* check whether the given fd is actually valid, for error recovery */
1000inline_size int 2370inline_size ecb_cold int
1001fd_valid (int fd) 2371fd_valid (int fd)
1002{ 2372{
1003#ifdef _WIN32 2373#ifdef _WIN32
1004 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2374 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1005#else 2375#else
1006 return fcntl (fd, F_GETFD) != -1; 2376 return fcntl (fd, F_GETFD) != -1;
1007#endif 2377#endif
1008} 2378}
1009 2379
1010/* called on EBADF to verify fds */ 2380/* called on EBADF to verify fds */
1011static void noinline 2381ecb_noinline ecb_cold
2382static void
1012fd_ebadf (EV_P) 2383fd_ebadf (EV_P)
1013{ 2384{
1014 int fd; 2385 int fd;
1015 2386
1016 for (fd = 0; fd < anfdmax; ++fd) 2387 for (fd = 0; fd < anfdmax; ++fd)
… …
1018 if (!fd_valid (fd) && errno == EBADF) 2389 if (!fd_valid (fd) && errno == EBADF)
1019 fd_kill (EV_A_ fd); 2390 fd_kill (EV_A_ fd);
1020} 2391}
1021 2392
1022/* called on ENOMEM in select/poll to kill some fds and retry */ 2393/* called on ENOMEM in select/poll to kill some fds and retry */
1023static void noinline 2394ecb_noinline ecb_cold
2395static void
1024fd_enomem (EV_P) 2396fd_enomem (EV_P)
1025{ 2397{
1026 int fd; 2398 int fd;
1027 2399
1028 for (fd = anfdmax; fd--; ) 2400 for (fd = anfdmax; fd--; )
… …
1032 break; 2404 break;
1033 } 2405 }
1034} 2406}
1035 2407
1036/* usually called after fork if backend needs to re-arm all fds from scratch */ 2408/* usually called after fork if backend needs to re-arm all fds from scratch */
1037static void noinline 2409ecb_noinline
2410static void
1038fd_rearm_all (EV_P) 2411fd_rearm_all (EV_P)
1039{ 2412{
1040 int fd; 2413 int fd;
1041 2414
1042 for (fd = 0; fd < anfdmax; ++fd) 2415 for (fd = 0; fd < anfdmax; ++fd)
… …
1063} 2436}
1064 2437
1065/*****************************************************************************/ 2438/*****************************************************************************/
1066 2439
1067/* 2440/*
1068 * the heap functions want a real array index. array index 0 uis guaranteed to not 2441 * the heap functions want a real array index. array index 0 is guaranteed to not
1069 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 2442 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
1070 * the branching factor of the d-tree. 2443 * the branching factor of the d-tree.
1071 */ 2444 */
1072 2445
1073/* 2446/*
… …
1095 ev_tstamp minat; 2468 ev_tstamp minat;
1096 ANHE *minpos; 2469 ANHE *minpos;
1097 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; 2470 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
1098 2471
1099 /* find minimum child */ 2472 /* find minimum child */
1100 if (expect_true (pos + DHEAP - 1 < E)) 2473 if (ecb_expect_true (pos + DHEAP - 1 < E))
1101 { 2474 {
1102 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2475 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1103 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2476 if ( minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1104 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2477 if ( minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1105 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2478 if ( minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1106 } 2479 }
1107 else if (pos < E) 2480 else if (pos < E)
1108 { 2481 {
1109 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2482 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1110 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2483 if (pos + 1 < E && minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1111 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2484 if (pos + 2 < E && minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1112 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2485 if (pos + 3 < E && minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1113 } 2486 }
1114 else 2487 else
1115 break; 2488 break;
1116 2489
1117 if (ANHE_at (he) <= minat) 2490 if (ANHE_at (he) <= minat)
… …
1125 2498
1126 heap [k] = he; 2499 heap [k] = he;
1127 ev_active (ANHE_w (he)) = k; 2500 ev_active (ANHE_w (he)) = k;
1128} 2501}
1129 2502
1130#else /* 4HEAP */ 2503#else /* not 4HEAP */
1131 2504
1132#define HEAP0 1 2505#define HEAP0 1
1133#define HPARENT(k) ((k) >> 1) 2506#define HPARENT(k) ((k) >> 1)
1134#define UPHEAP_DONE(p,k) (!(p)) 2507#define UPHEAP_DONE(p,k) (!(p))
1135 2508
… …
1223 2596
1224/*****************************************************************************/ 2597/*****************************************************************************/
1225 2598
1226#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2599#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1227 2600
1228static void noinline 2601ecb_noinline ecb_cold
2602static void
1229evpipe_init (EV_P) 2603evpipe_init (EV_P)
1230{ 2604{
1231 if (!ev_is_active (&pipe_w)) 2605 if (!ev_is_active (&pipe_w))
1232 { 2606 {
2607 int fds [2];
2608
1233# if EV_USE_EVENTFD 2609# if EV_USE_EVENTFD
2610 fds [0] = -1;
1234 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2611 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1235 if (evfd < 0 && errno == EINVAL) 2612 if (fds [1] < 0 && errno == EINVAL)
1236 evfd = eventfd (0, 0); 2613 fds [1] = eventfd (0, 0);
1237 2614
1238 if (evfd >= 0) 2615 if (fds [1] < 0)
2616# endif
1239 { 2617 {
2618 while (pipe (fds))
2619 ev_syserr ("(libev) error creating signal/async pipe");
2620
2621 fd_intern (fds [0]);
2622 }
2623
1240 evpipe [0] = -1; 2624 evpipe [0] = fds [0];
1241 fd_intern (evfd); /* doing it twice doesn't hurt */ 2625
1242 ev_io_set (&pipe_w, evfd, EV_READ); 2626 if (evpipe [1] < 0)
2627 evpipe [1] = fds [1]; /* first call, set write fd */
2628 else
2629 {
2630 /* on subsequent calls, do not change evpipe [1] */
2631 /* so that evpipe_write can always rely on its value. */
2632 /* this branch does not do anything sensible on windows, */
2633 /* so must not be executed on windows */
2634
2635 dup2 (fds [1], evpipe [1]);
2636 close (fds [1]);
2637 }
2638
2639 fd_intern (evpipe [1]);
2640
2641 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2642 ev_io_start (EV_A_ &pipe_w);
2643 ev_unref (EV_A); /* watcher should not keep loop alive */
2644 }
2645}
2646
2647inline_speed void
2648evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2649{
2650 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2651
2652 if (ecb_expect_true (*flag))
2653 return;
2654
2655 *flag = 1;
2656 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2657
2658 pipe_write_skipped = 1;
2659
2660 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2661
2662 if (pipe_write_wanted)
2663 {
2664 int old_errno;
2665
2666 pipe_write_skipped = 0;
2667 ECB_MEMORY_FENCE_RELEASE;
2668
2669 old_errno = errno; /* save errno because write will clobber it */
2670
2671#if EV_USE_EVENTFD
2672 if (evpipe [0] < 0)
2673 {
2674 uint64_t counter = 1;
2675 write (evpipe [1], &counter, sizeof (uint64_t));
1243 } 2676 }
1244 else 2677 else
1245# endif 2678#endif
1246 { 2679 {
1247 while (pipe (evpipe)) 2680#ifdef _WIN32
1248 ev_syserr ("(libev) error creating signal/async pipe"); 2681 WSABUF buf;
1249 2682 DWORD sent;
1250 fd_intern (evpipe [0]); 2683 buf.buf = (char *)&buf;
1251 fd_intern (evpipe [1]); 2684 buf.len = 1;
1252 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2685 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2686#else
2687 write (evpipe [1], &(evpipe [1]), 1);
2688#endif
1253 } 2689 }
1254
1255 ev_io_start (EV_A_ &pipe_w);
1256 ev_unref (EV_A); /* watcher should not keep loop alive */
1257 }
1258}
1259
1260inline_size void
1261evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1262{
1263 if (!*flag)
1264 {
1265 int old_errno = errno; /* save errno because write might clobber it */
1266 char dummy;
1267
1268 *flag = 1;
1269
1270#if EV_USE_EVENTFD
1271 if (evfd >= 0)
1272 {
1273 uint64_t counter = 1;
1274 write (evfd, &counter, sizeof (uint64_t));
1275 }
1276 else
1277#endif
1278 write (evpipe [1], &dummy, 1);
1279 2690
1280 errno = old_errno; 2691 errno = old_errno;
1281 } 2692 }
1282} 2693}
1283 2694
… …
1286static void 2697static void
1287pipecb (EV_P_ ev_io *iow, int revents) 2698pipecb (EV_P_ ev_io *iow, int revents)
1288{ 2699{
1289 int i; 2700 int i;
1290 2701
2702 if (revents & EV_READ)
2703 {
1291#if EV_USE_EVENTFD 2704#if EV_USE_EVENTFD
1292 if (evfd >= 0) 2705 if (evpipe [0] < 0)
1293 { 2706 {
1294 uint64_t counter; 2707 uint64_t counter;
1295 read (evfd, &counter, sizeof (uint64_t)); 2708 read (evpipe [1], &counter, sizeof (uint64_t));
1296 } 2709 }
1297 else 2710 else
1298#endif 2711#endif
1299 { 2712 {
1300 char dummy; 2713 char dummy[4];
2714#ifdef _WIN32
2715 WSABUF buf;
2716 DWORD recvd;
2717 DWORD flags = 0;
2718 buf.buf = dummy;
2719 buf.len = sizeof (dummy);
2720 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2721#else
1301 read (evpipe [0], &dummy, 1); 2722 read (evpipe [0], &dummy, sizeof (dummy));
2723#endif
2724 }
1302 } 2725 }
1303 2726
2727 pipe_write_skipped = 0;
2728
2729 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2730
2731#if EV_SIGNAL_ENABLE
1304 if (sig_pending) 2732 if (sig_pending)
1305 { 2733 {
1306 sig_pending = 0; 2734 sig_pending = 0;
1307 2735
2736 ECB_MEMORY_FENCE;
2737
1308 for (i = EV_NSIG - 1; i--; ) 2738 for (i = EV_NSIG - 1; i--; )
1309 if (expect_false (signals [i].pending)) 2739 if (ecb_expect_false (signals [i].pending))
1310 ev_feed_signal_event (EV_A_ i + 1); 2740 ev_feed_signal_event (EV_A_ i + 1);
1311 } 2741 }
2742#endif
1312 2743
1313#if EV_ASYNC_ENABLE 2744#if EV_ASYNC_ENABLE
1314 if (async_pending) 2745 if (async_pending)
1315 { 2746 {
1316 async_pending = 0; 2747 async_pending = 0;
2748
2749 ECB_MEMORY_FENCE;
1317 2750
1318 for (i = asynccnt; i--; ) 2751 for (i = asynccnt; i--; )
1319 if (asyncs [i]->sent) 2752 if (asyncs [i]->sent)
1320 { 2753 {
1321 asyncs [i]->sent = 0; 2754 asyncs [i]->sent = 0;
2755 ECB_MEMORY_FENCE_RELEASE;
1322 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2756 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1323 } 2757 }
1324 } 2758 }
1325#endif 2759#endif
1326} 2760}
1327 2761
1328/*****************************************************************************/ 2762/*****************************************************************************/
1329 2763
2764void
2765ev_feed_signal (int signum) EV_NOEXCEPT
2766{
2767#if EV_MULTIPLICITY
2768 EV_P;
2769 ECB_MEMORY_FENCE_ACQUIRE;
2770 EV_A = signals [signum - 1].loop;
2771
2772 if (!EV_A)
2773 return;
2774#endif
2775
2776 signals [signum - 1].pending = 1;
2777 evpipe_write (EV_A_ &sig_pending);
2778}
2779
1330static void 2780static void
1331ev_sighandler (int signum) 2781ev_sighandler (int signum)
1332{ 2782{
1333#if EV_MULTIPLICITY
1334 EV_P = signals [signum - 1].loop;
1335#endif
1336
1337#ifdef _WIN32 2783#ifdef _WIN32
1338 signal (signum, ev_sighandler); 2784 signal (signum, ev_sighandler);
1339#endif 2785#endif
1340 2786
1341 signals [signum - 1].pending = 1; 2787 ev_feed_signal (signum);
1342 evpipe_write (EV_A_ &sig_pending);
1343} 2788}
1344 2789
1345void noinline 2790ecb_noinline
2791void
1346ev_feed_signal_event (EV_P_ int signum) 2792ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
1347{ 2793{
1348 WL w; 2794 WL w;
1349 2795
1350 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2796 if (ecb_expect_false (signum <= 0 || signum >= EV_NSIG))
1351 return; 2797 return;
1352 2798
1353 --signum; 2799 --signum;
1354 2800
1355#if EV_MULTIPLICITY 2801#if EV_MULTIPLICITY
1356 /* it is permissible to try to feed a signal to the wrong loop */ 2802 /* it is permissible to try to feed a signal to the wrong loop */
1357 /* or, likely more useful, feeding a signal nobody is waiting for */ 2803 /* or, likely more useful, feeding a signal nobody is waiting for */
1358 2804
1359 if (expect_false (signals [signum].loop != EV_A)) 2805 if (ecb_expect_false (signals [signum].loop != EV_A))
1360 return; 2806 return;
1361#endif 2807#endif
1362 2808
1363 signals [signum].pending = 0; 2809 signals [signum].pending = 0;
2810 ECB_MEMORY_FENCE_RELEASE;
1364 2811
1365 for (w = signals [signum].head; w; w = w->next) 2812 for (w = signals [signum].head; w; w = w->next)
1366 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2813 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1367} 2814}
1368 2815
… …
1447 2894
1448#endif 2895#endif
1449 2896
1450/*****************************************************************************/ 2897/*****************************************************************************/
1451 2898
2899#if EV_USE_TIMERFD
2900
2901static void periodics_reschedule (EV_P);
2902
2903static void
2904timerfdcb (EV_P_ ev_io *iow, int revents)
2905{
2906 struct itimerspec its = { 0 };
2907
2908 /* since we can't easily come zup with a (portable) maximum value of time_t,
2909 * we wake up once per month, which hopefully is rare enough to not
2910 * be a problem. */
2911 its.it_value.tv_sec = ev_rt_now + 86400 * 30;
2912 timerfd_settime (timerfd, TFD_TIMER_ABSTIME | TFD_TIMER_CANCEL_ON_SET, &its, 0);
2913
2914 ev_rt_now = ev_time ();
2915 /* periodics_reschedule only needs ev_rt_now */
2916 /* but maybe in the future we want the full treatment. */
2917 /*
2918 now_floor = EV_TS_CONST (0.);
2919 time_update (EV_A_ EV_TSTAMP_HUGE);
2920 */
2921 periodics_reschedule (EV_A);
2922}
2923
2924ecb_noinline ecb_cold
2925static void
2926evtimerfd_init (EV_P)
2927{
2928 if (!ev_is_active (&timerfd_w))
2929 {
2930 timerfd = timerfd_create (CLOCK_REALTIME, TFD_NONBLOCK | TFD_CLOEXEC);
2931
2932 if (timerfd >= 0)
2933 {
2934 fd_intern (timerfd); /* just to be sure */
2935
2936 ev_io_init (&timerfd_w, timerfdcb, timerfd, EV_READ);
2937 ev_set_priority (&timerfd_w, EV_MINPRI);
2938 ev_io_start (EV_A_ &timerfd_w);
2939 ev_unref (EV_A); /* watcher should not keep loop alive */
2940
2941 /* (re-) arm timer */
2942 timerfdcb (EV_A_ 0, 0);
2943 }
2944 }
2945}
2946
2947#endif
2948
2949/*****************************************************************************/
2950
2951#if EV_USE_IOCP
2952# include "ev_iocp.c"
2953#endif
1452#if EV_USE_PORT 2954#if EV_USE_PORT
1453# include "ev_port.c" 2955# include "ev_port.c"
1454#endif 2956#endif
1455#if EV_USE_KQUEUE 2957#if EV_USE_KQUEUE
1456# include "ev_kqueue.c" 2958# include "ev_kqueue.c"
1457#endif 2959#endif
1458#if EV_USE_EPOLL 2960#if EV_USE_EPOLL
1459# include "ev_epoll.c" 2961# include "ev_epoll.c"
1460#endif 2962#endif
2963#if EV_USE_LINUXAIO
2964# include "ev_linuxaio.c"
2965#endif
2966#if EV_USE_IOURING
2967# include "ev_iouring.c"
2968#endif
1461#if EV_USE_POLL 2969#if EV_USE_POLL
1462# include "ev_poll.c" 2970# include "ev_poll.c"
1463#endif 2971#endif
1464#if EV_USE_SELECT 2972#if EV_USE_SELECT
1465# include "ev_select.c" 2973# include "ev_select.c"
1466#endif 2974#endif
1467 2975
1468int 2976ecb_cold int
1469ev_version_major (void) 2977ev_version_major (void) EV_NOEXCEPT
1470{ 2978{
1471 return EV_VERSION_MAJOR; 2979 return EV_VERSION_MAJOR;
1472} 2980}
1473 2981
1474int 2982ecb_cold int
1475ev_version_minor (void) 2983ev_version_minor (void) EV_NOEXCEPT
1476{ 2984{
1477 return EV_VERSION_MINOR; 2985 return EV_VERSION_MINOR;
1478} 2986}
1479 2987
1480/* return true if we are running with elevated privileges and should ignore env variables */ 2988/* return true if we are running with elevated privileges and should ignore env variables */
1481int inline_size 2989inline_size ecb_cold int
1482enable_secure (void) 2990enable_secure (void)
1483{ 2991{
1484#ifdef _WIN32 2992#ifdef _WIN32
1485 return 0; 2993 return 0;
1486#else 2994#else
1487 return getuid () != geteuid () 2995 return getuid () != geteuid ()
1488 || getgid () != getegid (); 2996 || getgid () != getegid ();
1489#endif 2997#endif
1490} 2998}
1491 2999
3000ecb_cold
1492unsigned int 3001unsigned int
1493ev_supported_backends (void) 3002ev_supported_backends (void) EV_NOEXCEPT
1494{ 3003{
1495 unsigned int flags = 0; 3004 unsigned int flags = 0;
1496 3005
1497 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 3006 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1498 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 3007 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
1499 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 3008 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
1500 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 3009 if (EV_USE_LINUXAIO ) flags |= EVBACKEND_LINUXAIO;
1501 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 3010 if (EV_USE_IOURING && ev_linux_version () >= 0x050601) flags |= EVBACKEND_IOURING; /* 5.6.1+ */
1502 3011 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
3012 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
3013
1503 return flags; 3014 return flags;
1504} 3015}
1505 3016
3017ecb_cold
1506unsigned int 3018unsigned int
1507ev_recommended_backends (void) 3019ev_recommended_backends (void) EV_NOEXCEPT
1508{ 3020{
1509 unsigned int flags = ev_supported_backends (); 3021 unsigned int flags = ev_supported_backends ();
1510 3022
1511#ifndef __NetBSD__ 3023#ifndef __NetBSD__
1512 /* kqueue is borked on everything but netbsd apparently */ 3024 /* kqueue is borked on everything but netbsd apparently */
… …
1520#endif 3032#endif
1521#ifdef __FreeBSD__ 3033#ifdef __FreeBSD__
1522 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */ 3034 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1523#endif 3035#endif
1524 3036
3037 /* TODO: linuxaio is very experimental */
3038#if !EV_RECOMMEND_LINUXAIO
3039 flags &= ~EVBACKEND_LINUXAIO;
3040#endif
3041 /* TODO: linuxaio is super experimental */
3042#if !EV_RECOMMEND_IOURING
3043 flags &= ~EVBACKEND_IOURING;
3044#endif
3045
1525 return flags; 3046 return flags;
1526} 3047}
1527 3048
3049ecb_cold
1528unsigned int 3050unsigned int
1529ev_embeddable_backends (void) 3051ev_embeddable_backends (void) EV_NOEXCEPT
1530{ 3052{
1531 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 3053 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1532 3054
1533 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 3055 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1534 /* please fix it and tell me how to detect the fix */ 3056 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1535 flags &= ~EVBACKEND_EPOLL; 3057 flags &= ~EVBACKEND_EPOLL;
3058
3059 /* EVBACKEND_LINUXAIO is theoretically embeddable, but suffers from a performance overhead */
3060
3061 /* EVBACKEND_IOURING is practically embeddable, but the current implementation is not
3062 * because our backend_fd is the epoll fd we need as fallback.
3063 * if the kernel ever is fixed, this might change...
3064 */
1536 3065
1537 return flags; 3066 return flags;
1538} 3067}
1539 3068
1540unsigned int 3069unsigned int
1541ev_backend (EV_P) 3070ev_backend (EV_P) EV_NOEXCEPT
1542{ 3071{
1543 return backend; 3072 return backend;
1544} 3073}
1545 3074
1546#if EV_FEATURE_API 3075#if EV_FEATURE_API
1547unsigned int 3076unsigned int
1548ev_iteration (EV_P) 3077ev_iteration (EV_P) EV_NOEXCEPT
1549{ 3078{
1550 return loop_count; 3079 return loop_count;
1551} 3080}
1552 3081
1553unsigned int 3082unsigned int
1554ev_depth (EV_P) 3083ev_depth (EV_P) EV_NOEXCEPT
1555{ 3084{
1556 return loop_depth; 3085 return loop_depth;
1557} 3086}
1558 3087
1559void 3088void
1560ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 3089ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1561{ 3090{
1562 io_blocktime = interval; 3091 io_blocktime = interval;
1563} 3092}
1564 3093
1565void 3094void
1566ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 3095ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1567{ 3096{
1568 timeout_blocktime = interval; 3097 timeout_blocktime = interval;
1569} 3098}
1570 3099
1571void 3100void
1572ev_set_userdata (EV_P_ void *data) 3101ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
1573{ 3102{
1574 userdata = data; 3103 userdata = data;
1575} 3104}
1576 3105
1577void * 3106void *
1578ev_userdata (EV_P) 3107ev_userdata (EV_P) EV_NOEXCEPT
1579{ 3108{
1580 return userdata; 3109 return userdata;
1581} 3110}
1582 3111
3112void
1583void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 3113ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
1584{ 3114{
1585 invoke_cb = invoke_pending_cb; 3115 invoke_cb = invoke_pending_cb;
1586} 3116}
1587 3117
3118void
1588void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 3119ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
1589{ 3120{
1590 release_cb = release; 3121 release_cb = release;
1591 acquire_cb = acquire; 3122 acquire_cb = acquire;
1592} 3123}
1593#endif 3124#endif
1594 3125
1595/* initialise a loop structure, must be zero-initialised */ 3126/* initialise a loop structure, must be zero-initialised */
1596static void noinline 3127ecb_noinline ecb_cold
3128static void
1597loop_init (EV_P_ unsigned int flags) 3129loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
1598{ 3130{
1599 if (!backend) 3131 if (!backend)
1600 { 3132 {
3133 origflags = flags;
3134
1601#if EV_USE_REALTIME 3135#if EV_USE_REALTIME
1602 if (!have_realtime) 3136 if (!have_realtime)
1603 { 3137 {
1604 struct timespec ts; 3138 struct timespec ts;
1605 3139
… …
1627 if (!(flags & EVFLAG_NOENV) 3161 if (!(flags & EVFLAG_NOENV)
1628 && !enable_secure () 3162 && !enable_secure ()
1629 && getenv ("LIBEV_FLAGS")) 3163 && getenv ("LIBEV_FLAGS"))
1630 flags = atoi (getenv ("LIBEV_FLAGS")); 3164 flags = atoi (getenv ("LIBEV_FLAGS"));
1631 3165
1632 ev_rt_now = ev_time (); 3166 ev_rt_now = ev_time ();
1633 mn_now = get_clock (); 3167 mn_now = get_clock ();
1634 now_floor = mn_now; 3168 now_floor = mn_now;
1635 rtmn_diff = ev_rt_now - mn_now; 3169 rtmn_diff = ev_rt_now - mn_now;
1636#if EV_FEATURE_API 3170#if EV_FEATURE_API
1637 invoke_cb = ev_invoke_pending; 3171 invoke_cb = ev_invoke_pending;
1638#endif 3172#endif
1639 3173
1640 io_blocktime = 0.; 3174 io_blocktime = 0.;
1641 timeout_blocktime = 0.; 3175 timeout_blocktime = 0.;
1642 backend = 0; 3176 backend = 0;
1643 backend_fd = -1; 3177 backend_fd = -1;
1644 sig_pending = 0; 3178 sig_pending = 0;
1645#if EV_ASYNC_ENABLE 3179#if EV_ASYNC_ENABLE
1646 async_pending = 0; 3180 async_pending = 0;
1647#endif 3181#endif
3182 pipe_write_skipped = 0;
3183 pipe_write_wanted = 0;
3184 evpipe [0] = -1;
3185 evpipe [1] = -1;
1648#if EV_USE_INOTIFY 3186#if EV_USE_INOTIFY
1649 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 3187 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1650#endif 3188#endif
1651#if EV_USE_SIGNALFD 3189#if EV_USE_SIGNALFD
1652 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 3190 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1653#endif 3191#endif
3192#if EV_USE_TIMERFD
3193 timerfd = flags & EVFLAG_NOTIMERFD ? -1 : -2;
3194#endif
1654 3195
1655 if (!(flags & 0x0000ffffU)) 3196 if (!(flags & EVBACKEND_MASK))
1656 flags |= ev_recommended_backends (); 3197 flags |= ev_recommended_backends ();
1657 3198
3199#if EV_USE_IOCP
3200 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
3201#endif
1658#if EV_USE_PORT 3202#if EV_USE_PORT
1659 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 3203 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1660#endif 3204#endif
1661#if EV_USE_KQUEUE 3205#if EV_USE_KQUEUE
1662 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 3206 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
3207#endif
3208#if EV_USE_IOURING
3209 if (!backend && (flags & EVBACKEND_IOURING )) backend = iouring_init (EV_A_ flags);
3210#endif
3211#if EV_USE_LINUXAIO
3212 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
1663#endif 3213#endif
1664#if EV_USE_EPOLL 3214#if EV_USE_EPOLL
1665 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 3215 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
1666#endif 3216#endif
1667#if EV_USE_POLL 3217#if EV_USE_POLL
1668 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 3218 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
1669#endif 3219#endif
1670#if EV_USE_SELECT 3220#if EV_USE_SELECT
1671 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 3221 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
1672#endif 3222#endif
1673 3223
1674 ev_prepare_init (&pending_w, pendingcb); 3224 ev_prepare_init (&pending_w, pendingcb);
1675 3225
1676#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 3226#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
… …
1679#endif 3229#endif
1680 } 3230 }
1681} 3231}
1682 3232
1683/* free up a loop structure */ 3233/* free up a loop structure */
1684static void noinline 3234ecb_cold
3235void
1685loop_destroy (EV_P) 3236ev_loop_destroy (EV_P)
1686{ 3237{
1687 int i; 3238 int i;
3239
3240#if EV_MULTIPLICITY
3241 /* mimic free (0) */
3242 if (!EV_A)
3243 return;
3244#endif
3245
3246#if EV_CLEANUP_ENABLE
3247 /* queue cleanup watchers (and execute them) */
3248 if (ecb_expect_false (cleanupcnt))
3249 {
3250 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
3251 EV_INVOKE_PENDING;
3252 }
3253#endif
3254
3255#if EV_CHILD_ENABLE
3256 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
3257 {
3258 ev_ref (EV_A); /* child watcher */
3259 ev_signal_stop (EV_A_ &childev);
3260 }
3261#endif
1688 3262
1689 if (ev_is_active (&pipe_w)) 3263 if (ev_is_active (&pipe_w))
1690 { 3264 {
1691 /*ev_ref (EV_A);*/ 3265 /*ev_ref (EV_A);*/
1692 /*ev_io_stop (EV_A_ &pipe_w);*/ 3266 /*ev_io_stop (EV_A_ &pipe_w);*/
1693 3267
1694#if EV_USE_EVENTFD
1695 if (evfd >= 0)
1696 close (evfd);
1697#endif
1698
1699 if (evpipe [0] >= 0)
1700 {
1701 EV_WIN32_CLOSE_FD (evpipe [0]); 3268 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1702 EV_WIN32_CLOSE_FD (evpipe [1]); 3269 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1703 }
1704 } 3270 }
1705 3271
1706#if EV_USE_SIGNALFD 3272#if EV_USE_SIGNALFD
1707 if (ev_is_active (&sigfd_w)) 3273 if (ev_is_active (&sigfd_w))
1708 close (sigfd); 3274 close (sigfd);
1709#endif 3275#endif
1710 3276
3277#if EV_USE_TIMERFD
3278 if (ev_is_active (&timerfd_w))
3279 close (timerfd);
3280#endif
3281
1711#if EV_USE_INOTIFY 3282#if EV_USE_INOTIFY
1712 if (fs_fd >= 0) 3283 if (fs_fd >= 0)
1713 close (fs_fd); 3284 close (fs_fd);
1714#endif 3285#endif
1715 3286
1716 if (backend_fd >= 0) 3287 if (backend_fd >= 0)
1717 close (backend_fd); 3288 close (backend_fd);
1718 3289
3290#if EV_USE_IOCP
3291 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
3292#endif
1719#if EV_USE_PORT 3293#if EV_USE_PORT
1720 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3294 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1721#endif 3295#endif
1722#if EV_USE_KQUEUE 3296#if EV_USE_KQUEUE
1723 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3297 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
3298#endif
3299#if EV_USE_IOURING
3300 if (backend == EVBACKEND_IOURING ) iouring_destroy (EV_A);
3301#endif
3302#if EV_USE_LINUXAIO
3303 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
1724#endif 3304#endif
1725#if EV_USE_EPOLL 3305#if EV_USE_EPOLL
1726 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3306 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
1727#endif 3307#endif
1728#if EV_USE_POLL 3308#if EV_USE_POLL
1729 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3309 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
1730#endif 3310#endif
1731#if EV_USE_SELECT 3311#if EV_USE_SELECT
1732 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3312 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
1733#endif 3313#endif
1734 3314
1735 for (i = NUMPRI; i--; ) 3315 for (i = NUMPRI; i--; )
1736 { 3316 {
1737 array_free (pending, [i]); 3317 array_free (pending, [i]);
… …
1750 array_free (periodic, EMPTY); 3330 array_free (periodic, EMPTY);
1751#endif 3331#endif
1752#if EV_FORK_ENABLE 3332#if EV_FORK_ENABLE
1753 array_free (fork, EMPTY); 3333 array_free (fork, EMPTY);
1754#endif 3334#endif
3335#if EV_CLEANUP_ENABLE
3336 array_free (cleanup, EMPTY);
3337#endif
1755 array_free (prepare, EMPTY); 3338 array_free (prepare, EMPTY);
1756 array_free (check, EMPTY); 3339 array_free (check, EMPTY);
1757#if EV_ASYNC_ENABLE 3340#if EV_ASYNC_ENABLE
1758 array_free (async, EMPTY); 3341 array_free (async, EMPTY);
1759#endif 3342#endif
1760 3343
1761 backend = 0; 3344 backend = 0;
3345
3346#if EV_MULTIPLICITY
3347 if (ev_is_default_loop (EV_A))
3348#endif
3349 ev_default_loop_ptr = 0;
3350#if EV_MULTIPLICITY
3351 else
3352 ev_free (EV_A);
3353#endif
1762} 3354}
1763 3355
1764#if EV_USE_INOTIFY 3356#if EV_USE_INOTIFY
1765inline_size void infy_fork (EV_P); 3357inline_size void infy_fork (EV_P);
1766#endif 3358#endif
1767 3359
1768inline_size void 3360inline_size void
1769loop_fork (EV_P) 3361loop_fork (EV_P)
1770{ 3362{
1771#if EV_USE_PORT 3363#if EV_USE_PORT
1772 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3364 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1773#endif 3365#endif
1774#if EV_USE_KQUEUE 3366#if EV_USE_KQUEUE
1775 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 3367 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
3368#endif
3369#if EV_USE_IOURING
3370 if (backend == EVBACKEND_IOURING ) iouring_fork (EV_A);
3371#endif
3372#if EV_USE_LINUXAIO
3373 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
1776#endif 3374#endif
1777#if EV_USE_EPOLL 3375#if EV_USE_EPOLL
1778 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3376 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
1779#endif 3377#endif
1780#if EV_USE_INOTIFY 3378#if EV_USE_INOTIFY
1781 infy_fork (EV_A); 3379 infy_fork (EV_A);
1782#endif 3380#endif
1783 3381
3382 if (postfork != 2)
3383 {
3384 #if EV_USE_SIGNALFD
3385 /* surprisingly, nothing needs to be done for signalfd, accoridng to docs, it does the right thing on fork */
3386 #endif
3387
3388 #if EV_USE_TIMERFD
3389 if (ev_is_active (&timerfd_w))
3390 {
3391 ev_ref (EV_A);
3392 ev_io_stop (EV_A_ &timerfd_w);
3393
3394 close (timerfd);
3395 timerfd = -2;
3396
3397 evtimerfd_init (EV_A);
3398 /* reschedule periodics, in case we missed something */
3399 ev_feed_event (EV_A_ &timerfd_w, EV_CUSTOM);
3400 }
3401 #endif
3402
3403 #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1784 if (ev_is_active (&pipe_w)) 3404 if (ev_is_active (&pipe_w))
1785 { 3405 {
1786 /* this "locks" the handlers against writing to the pipe */ 3406 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1787 /* while we modify the fd vars */ 3407
1788 sig_pending = 1;
1789#if EV_ASYNC_ENABLE
1790 async_pending = 1;
1791#endif
1792
1793 ev_ref (EV_A); 3408 ev_ref (EV_A);
1794 ev_io_stop (EV_A_ &pipe_w); 3409 ev_io_stop (EV_A_ &pipe_w);
1795 3410
1796#if EV_USE_EVENTFD
1797 if (evfd >= 0)
1798 close (evfd);
1799#endif
1800
1801 if (evpipe [0] >= 0) 3411 if (evpipe [0] >= 0)
1802 {
1803 EV_WIN32_CLOSE_FD (evpipe [0]); 3412 EV_WIN32_CLOSE_FD (evpipe [0]);
1804 EV_WIN32_CLOSE_FD (evpipe [1]); 3413
3414 evpipe_init (EV_A);
3415 /* iterate over everything, in case we missed something before */
3416 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1805 } 3417 }
1806 3418 #endif
1807#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1808 evpipe_init (EV_A);
1809 /* now iterate over everything, in case we missed something */
1810 pipecb (EV_A_ &pipe_w, EV_READ);
1811#endif
1812 } 3419 }
1813 3420
1814 postfork = 0; 3421 postfork = 0;
1815} 3422}
1816 3423
1817#if EV_MULTIPLICITY 3424#if EV_MULTIPLICITY
1818 3425
3426ecb_cold
1819struct ev_loop * 3427struct ev_loop *
1820ev_loop_new (unsigned int flags) 3428ev_loop_new (unsigned int flags) EV_NOEXCEPT
1821{ 3429{
1822 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3430 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1823 3431
1824 memset (EV_A, 0, sizeof (struct ev_loop)); 3432 memset (EV_A, 0, sizeof (struct ev_loop));
1825 loop_init (EV_A_ flags); 3433 loop_init (EV_A_ flags);
1826 3434
1827 if (ev_backend (EV_A)) 3435 if (ev_backend (EV_A))
1828 return EV_A; 3436 return EV_A;
1829 3437
3438 ev_free (EV_A);
1830 return 0; 3439 return 0;
1831} 3440}
1832 3441
1833void
1834ev_loop_destroy (EV_P)
1835{
1836 loop_destroy (EV_A);
1837 ev_free (loop);
1838}
1839
1840void
1841ev_loop_fork (EV_P)
1842{
1843 postfork = 1; /* must be in line with ev_default_fork */
1844}
1845#endif /* multiplicity */ 3442#endif /* multiplicity */
1846 3443
1847#if EV_VERIFY 3444#if EV_VERIFY
1848static void noinline 3445ecb_noinline ecb_cold
3446static void
1849verify_watcher (EV_P_ W w) 3447verify_watcher (EV_P_ W w)
1850{ 3448{
1851 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3449 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1852 3450
1853 if (w->pending) 3451 if (w->pending)
1854 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3452 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1855} 3453}
1856 3454
1857static void noinline 3455ecb_noinline ecb_cold
3456static void
1858verify_heap (EV_P_ ANHE *heap, int N) 3457verify_heap (EV_P_ ANHE *heap, int N)
1859{ 3458{
1860 int i; 3459 int i;
1861 3460
1862 for (i = HEAP0; i < N + HEAP0; ++i) 3461 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1867 3466
1868 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3467 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1869 } 3468 }
1870} 3469}
1871 3470
1872static void noinline 3471ecb_noinline ecb_cold
3472static void
1873array_verify (EV_P_ W *ws, int cnt) 3473array_verify (EV_P_ W *ws, int cnt)
1874{ 3474{
1875 while (cnt--) 3475 while (cnt--)
1876 { 3476 {
1877 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3477 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
1879 } 3479 }
1880} 3480}
1881#endif 3481#endif
1882 3482
1883#if EV_FEATURE_API 3483#if EV_FEATURE_API
1884void 3484void ecb_cold
1885ev_verify (EV_P) 3485ev_verify (EV_P) EV_NOEXCEPT
1886{ 3486{
1887#if EV_VERIFY 3487#if EV_VERIFY
1888 int i; 3488 int i;
1889 WL w; 3489 WL w, w2;
1890 3490
1891 assert (activecnt >= -1); 3491 assert (activecnt >= -1);
1892 3492
1893 assert (fdchangemax >= fdchangecnt); 3493 assert (fdchangemax >= fdchangecnt);
1894 for (i = 0; i < fdchangecnt; ++i) 3494 for (i = 0; i < fdchangecnt; ++i)
1895 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3495 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1896 3496
1897 assert (anfdmax >= 0); 3497 assert (anfdmax >= 0);
1898 for (i = 0; i < anfdmax; ++i) 3498 for (i = 0; i < anfdmax; ++i)
3499 {
3500 int j = 0;
3501
1899 for (w = anfds [i].head; w; w = w->next) 3502 for (w = w2 = anfds [i].head; w; w = w->next)
1900 { 3503 {
1901 verify_watcher (EV_A_ (W)w); 3504 verify_watcher (EV_A_ (W)w);
3505
3506 if (j++ & 1)
3507 {
3508 assert (("libev: io watcher list contains a loop", w != w2));
3509 w2 = w2->next;
3510 }
3511
1902 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3512 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1903 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 3513 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1904 } 3514 }
3515 }
1905 3516
1906 assert (timermax >= timercnt); 3517 assert (timermax >= timercnt);
1907 verify_heap (EV_A_ timers, timercnt); 3518 verify_heap (EV_A_ timers, timercnt);
1908 3519
1909#if EV_PERIODIC_ENABLE 3520#if EV_PERIODIC_ENABLE
… …
1924#if EV_FORK_ENABLE 3535#if EV_FORK_ENABLE
1925 assert (forkmax >= forkcnt); 3536 assert (forkmax >= forkcnt);
1926 array_verify (EV_A_ (W *)forks, forkcnt); 3537 array_verify (EV_A_ (W *)forks, forkcnt);
1927#endif 3538#endif
1928 3539
3540#if EV_CLEANUP_ENABLE
3541 assert (cleanupmax >= cleanupcnt);
3542 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
3543#endif
3544
1929#if EV_ASYNC_ENABLE 3545#if EV_ASYNC_ENABLE
1930 assert (asyncmax >= asynccnt); 3546 assert (asyncmax >= asynccnt);
1931 array_verify (EV_A_ (W *)asyncs, asynccnt); 3547 array_verify (EV_A_ (W *)asyncs, asynccnt);
1932#endif 3548#endif
1933 3549
… …
1950#endif 3566#endif
1951} 3567}
1952#endif 3568#endif
1953 3569
1954#if EV_MULTIPLICITY 3570#if EV_MULTIPLICITY
3571ecb_cold
1955struct ev_loop * 3572struct ev_loop *
1956ev_default_loop_init (unsigned int flags)
1957#else 3573#else
1958int 3574int
3575#endif
1959ev_default_loop (unsigned int flags) 3576ev_default_loop (unsigned int flags) EV_NOEXCEPT
1960#endif
1961{ 3577{
1962 if (!ev_default_loop_ptr) 3578 if (!ev_default_loop_ptr)
1963 { 3579 {
1964#if EV_MULTIPLICITY 3580#if EV_MULTIPLICITY
1965 EV_P = ev_default_loop_ptr = &default_loop_struct; 3581 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1984 3600
1985 return ev_default_loop_ptr; 3601 return ev_default_loop_ptr;
1986} 3602}
1987 3603
1988void 3604void
1989ev_default_destroy (void) 3605ev_loop_fork (EV_P) EV_NOEXCEPT
1990{ 3606{
1991#if EV_MULTIPLICITY 3607 postfork = 1;
1992 EV_P = ev_default_loop_ptr;
1993#endif
1994
1995 ev_default_loop_ptr = 0;
1996
1997#if EV_CHILD_ENABLE
1998 ev_ref (EV_A); /* child watcher */
1999 ev_signal_stop (EV_A_ &childev);
2000#endif
2001
2002 loop_destroy (EV_A);
2003}
2004
2005void
2006ev_default_fork (void)
2007{
2008#if EV_MULTIPLICITY
2009 EV_P = ev_default_loop_ptr;
2010#endif
2011
2012 postfork = 1; /* must be in line with ev_loop_fork */
2013} 3608}
2014 3609
2015/*****************************************************************************/ 3610/*****************************************************************************/
2016 3611
2017void 3612void
… …
2019{ 3614{
2020 EV_CB_INVOKE ((W)w, revents); 3615 EV_CB_INVOKE ((W)w, revents);
2021} 3616}
2022 3617
2023unsigned int 3618unsigned int
2024ev_pending_count (EV_P) 3619ev_pending_count (EV_P) EV_NOEXCEPT
2025{ 3620{
2026 int pri; 3621 int pri;
2027 unsigned int count = 0; 3622 unsigned int count = 0;
2028 3623
2029 for (pri = NUMPRI; pri--; ) 3624 for (pri = NUMPRI; pri--; )
2030 count += pendingcnt [pri]; 3625 count += pendingcnt [pri];
2031 3626
2032 return count; 3627 return count;
2033} 3628}
2034 3629
2035void noinline 3630ecb_noinline
3631void
2036ev_invoke_pending (EV_P) 3632ev_invoke_pending (EV_P)
2037{ 3633{
2038 int pri; 3634 pendingpri = NUMPRI;
2039 3635
2040 for (pri = NUMPRI; pri--; ) 3636 do
3637 {
3638 --pendingpri;
3639
3640 /* pendingpri possibly gets modified in the inner loop */
2041 while (pendingcnt [pri]) 3641 while (pendingcnt [pendingpri])
2042 { 3642 {
2043 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3643 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2044 3644
2045 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2046 /* ^ this is no longer true, as pending_w could be here */
2047
2048 p->w->pending = 0; 3645 p->w->pending = 0;
2049 EV_CB_INVOKE (p->w, p->events); 3646 EV_CB_INVOKE (p->w, p->events);
2050 EV_FREQUENT_CHECK; 3647 EV_FREQUENT_CHECK;
2051 } 3648 }
3649 }
3650 while (pendingpri);
2052} 3651}
2053 3652
2054#if EV_IDLE_ENABLE 3653#if EV_IDLE_ENABLE
2055/* make idle watchers pending. this handles the "call-idle */ 3654/* make idle watchers pending. this handles the "call-idle */
2056/* only when higher priorities are idle" logic */ 3655/* only when higher priorities are idle" logic */
2057inline_size void 3656inline_size void
2058idle_reify (EV_P) 3657idle_reify (EV_P)
2059{ 3658{
2060 if (expect_false (idleall)) 3659 if (ecb_expect_false (idleall))
2061 { 3660 {
2062 int pri; 3661 int pri;
2063 3662
2064 for (pri = NUMPRI; pri--; ) 3663 for (pri = NUMPRI; pri--; )
2065 { 3664 {
… …
2095 { 3694 {
2096 ev_at (w) += w->repeat; 3695 ev_at (w) += w->repeat;
2097 if (ev_at (w) < mn_now) 3696 if (ev_at (w) < mn_now)
2098 ev_at (w) = mn_now; 3697 ev_at (w) = mn_now;
2099 3698
2100 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 3699 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > EV_TS_CONST (0.)));
2101 3700
2102 ANHE_at_cache (timers [HEAP0]); 3701 ANHE_at_cache (timers [HEAP0]);
2103 downheap (timers, timercnt, HEAP0); 3702 downheap (timers, timercnt, HEAP0);
2104 } 3703 }
2105 else 3704 else
… …
2113 feed_reverse_done (EV_A_ EV_TIMER); 3712 feed_reverse_done (EV_A_ EV_TIMER);
2114 } 3713 }
2115} 3714}
2116 3715
2117#if EV_PERIODIC_ENABLE 3716#if EV_PERIODIC_ENABLE
3717
3718ecb_noinline
3719static void
3720periodic_recalc (EV_P_ ev_periodic *w)
3721{
3722 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3723 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3724
3725 /* the above almost always errs on the low side */
3726 while (at <= ev_rt_now)
3727 {
3728 ev_tstamp nat = at + w->interval;
3729
3730 /* when resolution fails us, we use ev_rt_now */
3731 if (ecb_expect_false (nat == at))
3732 {
3733 at = ev_rt_now;
3734 break;
3735 }
3736
3737 at = nat;
3738 }
3739
3740 ev_at (w) = at;
3741}
3742
2118/* make periodics pending */ 3743/* make periodics pending */
2119inline_size void 3744inline_size void
2120periodics_reify (EV_P) 3745periodics_reify (EV_P)
2121{ 3746{
2122 EV_FREQUENT_CHECK; 3747 EV_FREQUENT_CHECK;
2123 3748
2124 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3749 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2125 { 3750 {
2126 int feed_count = 0;
2127
2128 do 3751 do
2129 { 3752 {
2130 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3753 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2131 3754
2132 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3755 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2141 ANHE_at_cache (periodics [HEAP0]); 3764 ANHE_at_cache (periodics [HEAP0]);
2142 downheap (periodics, periodiccnt, HEAP0); 3765 downheap (periodics, periodiccnt, HEAP0);
2143 } 3766 }
2144 else if (w->interval) 3767 else if (w->interval)
2145 { 3768 {
2146 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3769 periodic_recalc (EV_A_ w);
2147 /* if next trigger time is not sufficiently in the future, put it there */
2148 /* this might happen because of floating point inexactness */
2149 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2150 {
2151 ev_at (w) += w->interval;
2152
2153 /* if interval is unreasonably low we might still have a time in the past */
2154 /* so correct this. this will make the periodic very inexact, but the user */
2155 /* has effectively asked to get triggered more often than possible */
2156 if (ev_at (w) < ev_rt_now)
2157 ev_at (w) = ev_rt_now;
2158 }
2159
2160 ANHE_at_cache (periodics [HEAP0]); 3770 ANHE_at_cache (periodics [HEAP0]);
2161 downheap (periodics, periodiccnt, HEAP0); 3771 downheap (periodics, periodiccnt, HEAP0);
2162 } 3772 }
2163 else 3773 else
2164 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3774 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2171 feed_reverse_done (EV_A_ EV_PERIODIC); 3781 feed_reverse_done (EV_A_ EV_PERIODIC);
2172 } 3782 }
2173} 3783}
2174 3784
2175/* simply recalculate all periodics */ 3785/* simply recalculate all periodics */
2176/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 3786/* TODO: maybe ensure that at least one event happens when jumping forward? */
2177static void noinline 3787ecb_noinline ecb_cold
3788static void
2178periodics_reschedule (EV_P) 3789periodics_reschedule (EV_P)
2179{ 3790{
2180 int i; 3791 int i;
2181 3792
2182 /* adjust periodics after time jump */ 3793 /* adjust periodics after time jump */
… …
2185 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3796 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2186 3797
2187 if (w->reschedule_cb) 3798 if (w->reschedule_cb)
2188 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3799 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2189 else if (w->interval) 3800 else if (w->interval)
2190 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3801 periodic_recalc (EV_A_ w);
2191 3802
2192 ANHE_at_cache (periodics [i]); 3803 ANHE_at_cache (periodics [i]);
2193 } 3804 }
2194 3805
2195 reheap (periodics, periodiccnt); 3806 reheap (periodics, periodiccnt);
2196} 3807}
2197#endif 3808#endif
2198 3809
2199/* adjust all timers by a given offset */ 3810/* adjust all timers by a given offset */
2200static void noinline 3811ecb_noinline ecb_cold
3812static void
2201timers_reschedule (EV_P_ ev_tstamp adjust) 3813timers_reschedule (EV_P_ ev_tstamp adjust)
2202{ 3814{
2203 int i; 3815 int i;
2204 3816
2205 for (i = 0; i < timercnt; ++i) 3817 for (i = 0; i < timercnt; ++i)
… …
2214/* also detect if there was a timejump, and act accordingly */ 3826/* also detect if there was a timejump, and act accordingly */
2215inline_speed void 3827inline_speed void
2216time_update (EV_P_ ev_tstamp max_block) 3828time_update (EV_P_ ev_tstamp max_block)
2217{ 3829{
2218#if EV_USE_MONOTONIC 3830#if EV_USE_MONOTONIC
2219 if (expect_true (have_monotonic)) 3831 if (ecb_expect_true (have_monotonic))
2220 { 3832 {
2221 int i; 3833 int i;
2222 ev_tstamp odiff = rtmn_diff; 3834 ev_tstamp odiff = rtmn_diff;
2223 3835
2224 mn_now = get_clock (); 3836 mn_now = get_clock ();
2225 3837
2226 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3838 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
2227 /* interpolate in the meantime */ 3839 /* interpolate in the meantime */
2228 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 3840 if (ecb_expect_true (mn_now - now_floor < EV_TS_CONST (MIN_TIMEJUMP * .5)))
2229 { 3841 {
2230 ev_rt_now = rtmn_diff + mn_now; 3842 ev_rt_now = rtmn_diff + mn_now;
2231 return; 3843 return;
2232 } 3844 }
2233 3845
… …
2242 * doesn't hurt either as we only do this on time-jumps or 3854 * doesn't hurt either as we only do this on time-jumps or
2243 * in the unlikely event of having been preempted here. 3855 * in the unlikely event of having been preempted here.
2244 */ 3856 */
2245 for (i = 4; --i; ) 3857 for (i = 4; --i; )
2246 { 3858 {
3859 ev_tstamp diff;
2247 rtmn_diff = ev_rt_now - mn_now; 3860 rtmn_diff = ev_rt_now - mn_now;
2248 3861
2249 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3862 diff = odiff - rtmn_diff;
3863
3864 if (ecb_expect_true ((diff < EV_TS_CONST (0.) ? -diff : diff) < EV_TS_CONST (MIN_TIMEJUMP)))
2250 return; /* all is well */ 3865 return; /* all is well */
2251 3866
2252 ev_rt_now = ev_time (); 3867 ev_rt_now = ev_time ();
2253 mn_now = get_clock (); 3868 mn_now = get_clock ();
2254 now_floor = mn_now; 3869 now_floor = mn_now;
… …
2263 else 3878 else
2264#endif 3879#endif
2265 { 3880 {
2266 ev_rt_now = ev_time (); 3881 ev_rt_now = ev_time ();
2267 3882
2268 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 3883 if (ecb_expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + EV_TS_CONST (MIN_TIMEJUMP)))
2269 { 3884 {
2270 /* adjust timers. this is easy, as the offset is the same for all of them */ 3885 /* adjust timers. this is easy, as the offset is the same for all of them */
2271 timers_reschedule (EV_A_ ev_rt_now - mn_now); 3886 timers_reschedule (EV_A_ ev_rt_now - mn_now);
2272#if EV_PERIODIC_ENABLE 3887#if EV_PERIODIC_ENABLE
2273 periodics_reschedule (EV_A); 3888 periodics_reschedule (EV_A);
… …
2276 3891
2277 mn_now = ev_rt_now; 3892 mn_now = ev_rt_now;
2278 } 3893 }
2279} 3894}
2280 3895
2281void 3896int
2282ev_loop (EV_P_ int flags) 3897ev_run (EV_P_ int flags)
2283{ 3898{
2284#if EV_FEATURE_API 3899#if EV_FEATURE_API
2285 ++loop_depth; 3900 ++loop_depth;
2286#endif 3901#endif
2287 3902
2288 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 3903 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2289 3904
2290 loop_done = EVUNLOOP_CANCEL; 3905 loop_done = EVBREAK_CANCEL;
2291 3906
2292 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 3907 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2293 3908
2294 do 3909 do
2295 { 3910 {
2296#if EV_VERIFY >= 2 3911#if EV_VERIFY >= 2
2297 ev_verify (EV_A); 3912 ev_verify (EV_A);
2298#endif 3913#endif
2299 3914
2300#ifndef _WIN32 3915#ifndef _WIN32
2301 if (expect_false (curpid)) /* penalise the forking check even more */ 3916 if (ecb_expect_false (curpid)) /* penalise the forking check even more */
2302 if (expect_false (getpid () != curpid)) 3917 if (ecb_expect_false (getpid () != curpid))
2303 { 3918 {
2304 curpid = getpid (); 3919 curpid = getpid ();
2305 postfork = 1; 3920 postfork = 1;
2306 } 3921 }
2307#endif 3922#endif
2308 3923
2309#if EV_FORK_ENABLE 3924#if EV_FORK_ENABLE
2310 /* we might have forked, so queue fork handlers */ 3925 /* we might have forked, so queue fork handlers */
2311 if (expect_false (postfork)) 3926 if (ecb_expect_false (postfork))
2312 if (forkcnt) 3927 if (forkcnt)
2313 { 3928 {
2314 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3929 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2315 EV_INVOKE_PENDING; 3930 EV_INVOKE_PENDING;
2316 } 3931 }
2317#endif 3932#endif
2318 3933
2319#if EV_PREPARE_ENABLE 3934#if EV_PREPARE_ENABLE
2320 /* queue prepare watchers (and execute them) */ 3935 /* queue prepare watchers (and execute them) */
2321 if (expect_false (preparecnt)) 3936 if (ecb_expect_false (preparecnt))
2322 { 3937 {
2323 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3938 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2324 EV_INVOKE_PENDING; 3939 EV_INVOKE_PENDING;
2325 } 3940 }
2326#endif 3941#endif
2327 3942
2328 if (expect_false (loop_done)) 3943 if (ecb_expect_false (loop_done))
2329 break; 3944 break;
2330 3945
2331 /* we might have forked, so reify kernel state if necessary */ 3946 /* we might have forked, so reify kernel state if necessary */
2332 if (expect_false (postfork)) 3947 if (ecb_expect_false (postfork))
2333 loop_fork (EV_A); 3948 loop_fork (EV_A);
2334 3949
2335 /* update fd-related kernel structures */ 3950 /* update fd-related kernel structures */
2336 fd_reify (EV_A); 3951 fd_reify (EV_A);
2337 3952
2338 /* calculate blocking time */ 3953 /* calculate blocking time */
2339 { 3954 {
2340 ev_tstamp waittime = 0.; 3955 ev_tstamp waittime = 0.;
2341 ev_tstamp sleeptime = 0.; 3956 ev_tstamp sleeptime = 0.;
2342 3957
3958 /* remember old timestamp for io_blocktime calculation */
3959 ev_tstamp prev_mn_now = mn_now;
3960
3961 /* update time to cancel out callback processing overhead */
3962 time_update (EV_A_ EV_TS_CONST (EV_TSTAMP_HUGE));
3963
3964 /* from now on, we want a pipe-wake-up */
3965 pipe_write_wanted = 1;
3966
3967 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3968
2343 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3969 if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2344 { 3970 {
2345 /* remember old timestamp for io_blocktime calculation */
2346 ev_tstamp prev_mn_now = mn_now;
2347
2348 /* update time to cancel out callback processing overhead */
2349 time_update (EV_A_ 1e100);
2350
2351 waittime = MAX_BLOCKTIME; 3971 waittime = EV_TS_CONST (MAX_BLOCKTIME);
2352 3972
2353 if (timercnt) 3973 if (timercnt)
2354 { 3974 {
2355 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3975 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2356 if (waittime > to) waittime = to; 3976 if (waittime > to) waittime = to;
2357 } 3977 }
2358 3978
2359#if EV_PERIODIC_ENABLE 3979#if EV_PERIODIC_ENABLE
2360 if (periodiccnt) 3980 if (periodiccnt)
2361 { 3981 {
2362 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3982 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2363 if (waittime > to) waittime = to; 3983 if (waittime > to) waittime = to;
2364 } 3984 }
2365#endif 3985#endif
2366 3986
2367 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3987 /* don't let timeouts decrease the waittime below timeout_blocktime */
2368 if (expect_false (waittime < timeout_blocktime)) 3988 if (ecb_expect_false (waittime < timeout_blocktime))
2369 waittime = timeout_blocktime; 3989 waittime = timeout_blocktime;
2370 3990
3991 /* now there are two more special cases left, either we have
3992 * already-expired timers, so we should not sleep, or we have timers
3993 * that expire very soon, in which case we need to wait for a minimum
3994 * amount of time for some event loop backends.
3995 */
3996 if (ecb_expect_false (waittime < backend_mintime))
3997 waittime = waittime <= EV_TS_CONST (0.)
3998 ? EV_TS_CONST (0.)
3999 : backend_mintime;
4000
2371 /* extra check because io_blocktime is commonly 0 */ 4001 /* extra check because io_blocktime is commonly 0 */
2372 if (expect_false (io_blocktime)) 4002 if (ecb_expect_false (io_blocktime))
2373 { 4003 {
2374 sleeptime = io_blocktime - (mn_now - prev_mn_now); 4004 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2375 4005
2376 if (sleeptime > waittime - backend_fudge) 4006 if (sleeptime > waittime - backend_mintime)
2377 sleeptime = waittime - backend_fudge; 4007 sleeptime = waittime - backend_mintime;
2378 4008
2379 if (expect_true (sleeptime > 0.)) 4009 if (ecb_expect_true (sleeptime > EV_TS_CONST (0.)))
2380 { 4010 {
2381 ev_sleep (sleeptime); 4011 ev_sleep (sleeptime);
2382 waittime -= sleeptime; 4012 waittime -= sleeptime;
2383 } 4013 }
2384 } 4014 }
2385 } 4015 }
2386 4016
2387#if EV_FEATURE_API 4017#if EV_FEATURE_API
2388 ++loop_count; 4018 ++loop_count;
2389#endif 4019#endif
2390 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 4020 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2391 backend_poll (EV_A_ waittime); 4021 backend_poll (EV_A_ waittime);
2392 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 4022 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
4023
4024 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
4025
4026 ECB_MEMORY_FENCE_ACQUIRE;
4027 if (pipe_write_skipped)
4028 {
4029 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
4030 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
4031 }
2393 4032
2394 /* update ev_rt_now, do magic */ 4033 /* update ev_rt_now, do magic */
2395 time_update (EV_A_ waittime + sleeptime); 4034 time_update (EV_A_ waittime + sleeptime);
2396 } 4035 }
2397 4036
… …
2406 idle_reify (EV_A); 4045 idle_reify (EV_A);
2407#endif 4046#endif
2408 4047
2409#if EV_CHECK_ENABLE 4048#if EV_CHECK_ENABLE
2410 /* queue check watchers, to be executed first */ 4049 /* queue check watchers, to be executed first */
2411 if (expect_false (checkcnt)) 4050 if (ecb_expect_false (checkcnt))
2412 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 4051 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2413#endif 4052#endif
2414 4053
2415 EV_INVOKE_PENDING; 4054 EV_INVOKE_PENDING;
2416 } 4055 }
2417 while (expect_true ( 4056 while (ecb_expect_true (
2418 activecnt 4057 activecnt
2419 && !loop_done 4058 && !loop_done
2420 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 4059 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2421 )); 4060 ));
2422 4061
2423 if (loop_done == EVUNLOOP_ONE) 4062 if (loop_done == EVBREAK_ONE)
2424 loop_done = EVUNLOOP_CANCEL; 4063 loop_done = EVBREAK_CANCEL;
2425 4064
2426#if EV_FEATURE_API 4065#if EV_FEATURE_API
2427 --loop_depth; 4066 --loop_depth;
2428#endif 4067#endif
2429}
2430 4068
4069 return activecnt;
4070}
4071
2431void 4072void
2432ev_unloop (EV_P_ int how) 4073ev_break (EV_P_ int how) EV_NOEXCEPT
2433{ 4074{
2434 loop_done = how; 4075 loop_done = how;
2435} 4076}
2436 4077
2437void 4078void
2438ev_ref (EV_P) 4079ev_ref (EV_P) EV_NOEXCEPT
2439{ 4080{
2440 ++activecnt; 4081 ++activecnt;
2441} 4082}
2442 4083
2443void 4084void
2444ev_unref (EV_P) 4085ev_unref (EV_P) EV_NOEXCEPT
2445{ 4086{
2446 --activecnt; 4087 --activecnt;
2447} 4088}
2448 4089
2449void 4090void
2450ev_now_update (EV_P) 4091ev_now_update (EV_P) EV_NOEXCEPT
2451{ 4092{
2452 time_update (EV_A_ 1e100); 4093 time_update (EV_A_ EV_TSTAMP_HUGE);
2453} 4094}
2454 4095
2455void 4096void
2456ev_suspend (EV_P) 4097ev_suspend (EV_P) EV_NOEXCEPT
2457{ 4098{
2458 ev_now_update (EV_A); 4099 ev_now_update (EV_A);
2459} 4100}
2460 4101
2461void 4102void
2462ev_resume (EV_P) 4103ev_resume (EV_P) EV_NOEXCEPT
2463{ 4104{
2464 ev_tstamp mn_prev = mn_now; 4105 ev_tstamp mn_prev = mn_now;
2465 4106
2466 ev_now_update (EV_A); 4107 ev_now_update (EV_A);
2467 timers_reschedule (EV_A_ mn_now - mn_prev); 4108 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2484inline_size void 4125inline_size void
2485wlist_del (WL *head, WL elem) 4126wlist_del (WL *head, WL elem)
2486{ 4127{
2487 while (*head) 4128 while (*head)
2488 { 4129 {
2489 if (expect_true (*head == elem)) 4130 if (ecb_expect_true (*head == elem))
2490 { 4131 {
2491 *head = elem->next; 4132 *head = elem->next;
2492 break; 4133 break;
2493 } 4134 }
2494 4135
… …
2506 w->pending = 0; 4147 w->pending = 0;
2507 } 4148 }
2508} 4149}
2509 4150
2510int 4151int
2511ev_clear_pending (EV_P_ void *w) 4152ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
2512{ 4153{
2513 W w_ = (W)w; 4154 W w_ = (W)w;
2514 int pending = w_->pending; 4155 int pending = w_->pending;
2515 4156
2516 if (expect_true (pending)) 4157 if (ecb_expect_true (pending))
2517 { 4158 {
2518 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 4159 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2519 p->w = (W)&pending_w; 4160 p->w = (W)&pending_w;
2520 w_->pending = 0; 4161 w_->pending = 0;
2521 return p->events; 4162 return p->events;
… …
2548 w->active = 0; 4189 w->active = 0;
2549} 4190}
2550 4191
2551/*****************************************************************************/ 4192/*****************************************************************************/
2552 4193
2553void noinline 4194ecb_noinline
4195void
2554ev_io_start (EV_P_ ev_io *w) 4196ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
2555{ 4197{
2556 int fd = w->fd; 4198 int fd = w->fd;
2557 4199
2558 if (expect_false (ev_is_active (w))) 4200 if (ecb_expect_false (ev_is_active (w)))
2559 return; 4201 return;
2560 4202
2561 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 4203 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2562 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 4204 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2563 4205
4206#if EV_VERIFY >= 2
4207 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
4208#endif
2564 EV_FREQUENT_CHECK; 4209 EV_FREQUENT_CHECK;
2565 4210
2566 ev_start (EV_A_ (W)w, 1); 4211 ev_start (EV_A_ (W)w, 1);
2567 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 4212 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
2568 wlist_add (&anfds[fd].head, (WL)w); 4213 wlist_add (&anfds[fd].head, (WL)w);
4214
4215 /* common bug, apparently */
4216 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
2569 4217
2570 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 4218 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2571 w->events &= ~EV__IOFDSET; 4219 w->events &= ~EV__IOFDSET;
2572 4220
2573 EV_FREQUENT_CHECK; 4221 EV_FREQUENT_CHECK;
2574} 4222}
2575 4223
2576void noinline 4224ecb_noinline
4225void
2577ev_io_stop (EV_P_ ev_io *w) 4226ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
2578{ 4227{
2579 clear_pending (EV_A_ (W)w); 4228 clear_pending (EV_A_ (W)w);
2580 if (expect_false (!ev_is_active (w))) 4229 if (ecb_expect_false (!ev_is_active (w)))
2581 return; 4230 return;
2582 4231
2583 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 4232 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2584 4233
4234#if EV_VERIFY >= 2
4235 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
4236#endif
2585 EV_FREQUENT_CHECK; 4237 EV_FREQUENT_CHECK;
2586 4238
2587 wlist_del (&anfds[w->fd].head, (WL)w); 4239 wlist_del (&anfds[w->fd].head, (WL)w);
2588 ev_stop (EV_A_ (W)w); 4240 ev_stop (EV_A_ (W)w);
2589 4241
2590 fd_change (EV_A_ w->fd, 1); 4242 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2591 4243
2592 EV_FREQUENT_CHECK; 4244 EV_FREQUENT_CHECK;
2593} 4245}
2594 4246
2595void noinline 4247ecb_noinline
4248void
2596ev_timer_start (EV_P_ ev_timer *w) 4249ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
2597{ 4250{
2598 if (expect_false (ev_is_active (w))) 4251 if (ecb_expect_false (ev_is_active (w)))
2599 return; 4252 return;
2600 4253
2601 ev_at (w) += mn_now; 4254 ev_at (w) += mn_now;
2602 4255
2603 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 4256 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2604 4257
2605 EV_FREQUENT_CHECK; 4258 EV_FREQUENT_CHECK;
2606 4259
2607 ++timercnt; 4260 ++timercnt;
2608 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 4261 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
2609 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 4262 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
2610 ANHE_w (timers [ev_active (w)]) = (WT)w; 4263 ANHE_w (timers [ev_active (w)]) = (WT)w;
2611 ANHE_at_cache (timers [ev_active (w)]); 4264 ANHE_at_cache (timers [ev_active (w)]);
2612 upheap (timers, ev_active (w)); 4265 upheap (timers, ev_active (w));
2613 4266
2614 EV_FREQUENT_CHECK; 4267 EV_FREQUENT_CHECK;
2615 4268
2616 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 4269 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2617} 4270}
2618 4271
2619void noinline 4272ecb_noinline
4273void
2620ev_timer_stop (EV_P_ ev_timer *w) 4274ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
2621{ 4275{
2622 clear_pending (EV_A_ (W)w); 4276 clear_pending (EV_A_ (W)w);
2623 if (expect_false (!ev_is_active (w))) 4277 if (ecb_expect_false (!ev_is_active (w)))
2624 return; 4278 return;
2625 4279
2626 EV_FREQUENT_CHECK; 4280 EV_FREQUENT_CHECK;
2627 4281
2628 { 4282 {
… …
2630 4284
2631 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 4285 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2632 4286
2633 --timercnt; 4287 --timercnt;
2634 4288
2635 if (expect_true (active < timercnt + HEAP0)) 4289 if (ecb_expect_true (active < timercnt + HEAP0))
2636 { 4290 {
2637 timers [active] = timers [timercnt + HEAP0]; 4291 timers [active] = timers [timercnt + HEAP0];
2638 adjustheap (timers, timercnt, active); 4292 adjustheap (timers, timercnt, active);
2639 } 4293 }
2640 } 4294 }
… …
2644 ev_stop (EV_A_ (W)w); 4298 ev_stop (EV_A_ (W)w);
2645 4299
2646 EV_FREQUENT_CHECK; 4300 EV_FREQUENT_CHECK;
2647} 4301}
2648 4302
2649void noinline 4303ecb_noinline
4304void
2650ev_timer_again (EV_P_ ev_timer *w) 4305ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
2651{ 4306{
2652 EV_FREQUENT_CHECK; 4307 EV_FREQUENT_CHECK;
4308
4309 clear_pending (EV_A_ (W)w);
2653 4310
2654 if (ev_is_active (w)) 4311 if (ev_is_active (w))
2655 { 4312 {
2656 if (w->repeat) 4313 if (w->repeat)
2657 { 4314 {
… …
2670 4327
2671 EV_FREQUENT_CHECK; 4328 EV_FREQUENT_CHECK;
2672} 4329}
2673 4330
2674ev_tstamp 4331ev_tstamp
2675ev_timer_remaining (EV_P_ ev_timer *w) 4332ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
2676{ 4333{
2677 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4334 return ev_at (w) - (ev_is_active (w) ? mn_now : EV_TS_CONST (0.));
2678} 4335}
2679 4336
2680#if EV_PERIODIC_ENABLE 4337#if EV_PERIODIC_ENABLE
2681void noinline 4338ecb_noinline
4339void
2682ev_periodic_start (EV_P_ ev_periodic *w) 4340ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
2683{ 4341{
2684 if (expect_false (ev_is_active (w))) 4342 if (ecb_expect_false (ev_is_active (w)))
2685 return; 4343 return;
4344
4345#if EV_USE_TIMERFD
4346 if (timerfd == -2)
4347 evtimerfd_init (EV_A);
4348#endif
2686 4349
2687 if (w->reschedule_cb) 4350 if (w->reschedule_cb)
2688 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4351 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2689 else if (w->interval) 4352 else if (w->interval)
2690 { 4353 {
2691 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 4354 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2692 /* this formula differs from the one in periodic_reify because we do not always round up */ 4355 periodic_recalc (EV_A_ w);
2693 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2694 } 4356 }
2695 else 4357 else
2696 ev_at (w) = w->offset; 4358 ev_at (w) = w->offset;
2697 4359
2698 EV_FREQUENT_CHECK; 4360 EV_FREQUENT_CHECK;
2699 4361
2700 ++periodiccnt; 4362 ++periodiccnt;
2701 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4363 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2702 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4364 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
2703 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4365 ANHE_w (periodics [ev_active (w)]) = (WT)w;
2704 ANHE_at_cache (periodics [ev_active (w)]); 4366 ANHE_at_cache (periodics [ev_active (w)]);
2705 upheap (periodics, ev_active (w)); 4367 upheap (periodics, ev_active (w));
2706 4368
2707 EV_FREQUENT_CHECK; 4369 EV_FREQUENT_CHECK;
2708 4370
2709 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4371 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2710} 4372}
2711 4373
2712void noinline 4374ecb_noinline
4375void
2713ev_periodic_stop (EV_P_ ev_periodic *w) 4376ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
2714{ 4377{
2715 clear_pending (EV_A_ (W)w); 4378 clear_pending (EV_A_ (W)w);
2716 if (expect_false (!ev_is_active (w))) 4379 if (ecb_expect_false (!ev_is_active (w)))
2717 return; 4380 return;
2718 4381
2719 EV_FREQUENT_CHECK; 4382 EV_FREQUENT_CHECK;
2720 4383
2721 { 4384 {
… …
2723 4386
2724 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 4387 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2725 4388
2726 --periodiccnt; 4389 --periodiccnt;
2727 4390
2728 if (expect_true (active < periodiccnt + HEAP0)) 4391 if (ecb_expect_true (active < periodiccnt + HEAP0))
2729 { 4392 {
2730 periodics [active] = periodics [periodiccnt + HEAP0]; 4393 periodics [active] = periodics [periodiccnt + HEAP0];
2731 adjustheap (periodics, periodiccnt, active); 4394 adjustheap (periodics, periodiccnt, active);
2732 } 4395 }
2733 } 4396 }
… …
2735 ev_stop (EV_A_ (W)w); 4398 ev_stop (EV_A_ (W)w);
2736 4399
2737 EV_FREQUENT_CHECK; 4400 EV_FREQUENT_CHECK;
2738} 4401}
2739 4402
2740void noinline 4403ecb_noinline
4404void
2741ev_periodic_again (EV_P_ ev_periodic *w) 4405ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
2742{ 4406{
2743 /* TODO: use adjustheap and recalculation */ 4407 /* TODO: use adjustheap and recalculation */
2744 ev_periodic_stop (EV_A_ w); 4408 ev_periodic_stop (EV_A_ w);
2745 ev_periodic_start (EV_A_ w); 4409 ev_periodic_start (EV_A_ w);
2746} 4410}
… …
2750# define SA_RESTART 0 4414# define SA_RESTART 0
2751#endif 4415#endif
2752 4416
2753#if EV_SIGNAL_ENABLE 4417#if EV_SIGNAL_ENABLE
2754 4418
2755void noinline 4419ecb_noinline
4420void
2756ev_signal_start (EV_P_ ev_signal *w) 4421ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
2757{ 4422{
2758 if (expect_false (ev_is_active (w))) 4423 if (ecb_expect_false (ev_is_active (w)))
2759 return; 4424 return;
2760 4425
2761 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4426 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2762 4427
2763#if EV_MULTIPLICITY 4428#if EV_MULTIPLICITY
2764 assert (("libev: a signal must not be attached to two different loops", 4429 assert (("libev: a signal must not be attached to two different loops",
2765 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4430 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2766 4431
2767 signals [w->signum - 1].loop = EV_A; 4432 signals [w->signum - 1].loop = EV_A;
4433 ECB_MEMORY_FENCE_RELEASE;
2768#endif 4434#endif
2769 4435
2770 EV_FREQUENT_CHECK; 4436 EV_FREQUENT_CHECK;
2771 4437
2772#if EV_USE_SIGNALFD 4438#if EV_USE_SIGNALFD
… …
2819 sa.sa_handler = ev_sighandler; 4485 sa.sa_handler = ev_sighandler;
2820 sigfillset (&sa.sa_mask); 4486 sigfillset (&sa.sa_mask);
2821 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 4487 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2822 sigaction (w->signum, &sa, 0); 4488 sigaction (w->signum, &sa, 0);
2823 4489
4490 if (origflags & EVFLAG_NOSIGMASK)
4491 {
2824 sigemptyset (&sa.sa_mask); 4492 sigemptyset (&sa.sa_mask);
2825 sigaddset (&sa.sa_mask, w->signum); 4493 sigaddset (&sa.sa_mask, w->signum);
2826 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 4494 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
4495 }
2827#endif 4496#endif
2828 } 4497 }
2829 4498
2830 EV_FREQUENT_CHECK; 4499 EV_FREQUENT_CHECK;
2831} 4500}
2832 4501
2833void noinline 4502ecb_noinline
4503void
2834ev_signal_stop (EV_P_ ev_signal *w) 4504ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
2835{ 4505{
2836 clear_pending (EV_A_ (W)w); 4506 clear_pending (EV_A_ (W)w);
2837 if (expect_false (!ev_is_active (w))) 4507 if (ecb_expect_false (!ev_is_active (w)))
2838 return; 4508 return;
2839 4509
2840 EV_FREQUENT_CHECK; 4510 EV_FREQUENT_CHECK;
2841 4511
2842 wlist_del (&signals [w->signum - 1].head, (WL)w); 4512 wlist_del (&signals [w->signum - 1].head, (WL)w);
… …
2870#endif 4540#endif
2871 4541
2872#if EV_CHILD_ENABLE 4542#if EV_CHILD_ENABLE
2873 4543
2874void 4544void
2875ev_child_start (EV_P_ ev_child *w) 4545ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
2876{ 4546{
2877#if EV_MULTIPLICITY 4547#if EV_MULTIPLICITY
2878 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4548 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2879#endif 4549#endif
2880 if (expect_false (ev_is_active (w))) 4550 if (ecb_expect_false (ev_is_active (w)))
2881 return; 4551 return;
2882 4552
2883 EV_FREQUENT_CHECK; 4553 EV_FREQUENT_CHECK;
2884 4554
2885 ev_start (EV_A_ (W)w, 1); 4555 ev_start (EV_A_ (W)w, 1);
… …
2887 4557
2888 EV_FREQUENT_CHECK; 4558 EV_FREQUENT_CHECK;
2889} 4559}
2890 4560
2891void 4561void
2892ev_child_stop (EV_P_ ev_child *w) 4562ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
2893{ 4563{
2894 clear_pending (EV_A_ (W)w); 4564 clear_pending (EV_A_ (W)w);
2895 if (expect_false (!ev_is_active (w))) 4565 if (ecb_expect_false (!ev_is_active (w)))
2896 return; 4566 return;
2897 4567
2898 EV_FREQUENT_CHECK; 4568 EV_FREQUENT_CHECK;
2899 4569
2900 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w); 4570 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
… …
2914 4584
2915#define DEF_STAT_INTERVAL 5.0074891 4585#define DEF_STAT_INTERVAL 5.0074891
2916#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4586#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2917#define MIN_STAT_INTERVAL 0.1074891 4587#define MIN_STAT_INTERVAL 0.1074891
2918 4588
2919static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4589ecb_noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2920 4590
2921#if EV_USE_INOTIFY 4591#if EV_USE_INOTIFY
2922 4592
2923/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ 4593/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
2924# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4594# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2925 4595
2926static void noinline 4596ecb_noinline
4597static void
2927infy_add (EV_P_ ev_stat *w) 4598infy_add (EV_P_ ev_stat *w)
2928{ 4599{
2929 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); 4600 w->wd = inotify_add_watch (fs_fd, w->path,
4601 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4602 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4603 | IN_DONT_FOLLOW | IN_MASK_ADD);
2930 4604
2931 if (w->wd >= 0) 4605 if (w->wd >= 0)
2932 { 4606 {
2933 struct statfs sfs; 4607 struct statfs sfs;
2934 4608
… …
2938 4612
2939 if (!fs_2625) 4613 if (!fs_2625)
2940 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4614 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2941 else if (!statfs (w->path, &sfs) 4615 else if (!statfs (w->path, &sfs)
2942 && (sfs.f_type == 0x1373 /* devfs */ 4616 && (sfs.f_type == 0x1373 /* devfs */
4617 || sfs.f_type == 0x4006 /* fat */
4618 || sfs.f_type == 0x4d44 /* msdos */
2943 || sfs.f_type == 0xEF53 /* ext2/3 */ 4619 || sfs.f_type == 0xEF53 /* ext2/3 */
4620 || sfs.f_type == 0x72b6 /* jffs2 */
4621 || sfs.f_type == 0x858458f6 /* ramfs */
4622 || sfs.f_type == 0x5346544e /* ntfs */
2944 || sfs.f_type == 0x3153464a /* jfs */ 4623 || sfs.f_type == 0x3153464a /* jfs */
4624 || sfs.f_type == 0x9123683e /* btrfs */
2945 || sfs.f_type == 0x52654973 /* reiser3 */ 4625 || sfs.f_type == 0x52654973 /* reiser3 */
2946 || sfs.f_type == 0x01021994 /* tempfs */ 4626 || sfs.f_type == 0x01021994 /* tmpfs */
2947 || sfs.f_type == 0x58465342 /* xfs */)) 4627 || sfs.f_type == 0x58465342 /* xfs */))
2948 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4628 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
2949 else 4629 else
2950 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4630 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2951 } 4631 }
… …
2972 if (!pend || pend == path) 4652 if (!pend || pend == path)
2973 break; 4653 break;
2974 4654
2975 *pend = 0; 4655 *pend = 0;
2976 w->wd = inotify_add_watch (fs_fd, path, mask); 4656 w->wd = inotify_add_watch (fs_fd, path, mask);
2977 } 4657 }
2978 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 4658 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2979 } 4659 }
2980 } 4660 }
2981 4661
2982 if (w->wd >= 0) 4662 if (w->wd >= 0)
… …
2986 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4666 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2987 ev_timer_again (EV_A_ &w->timer); 4667 ev_timer_again (EV_A_ &w->timer);
2988 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4668 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2989} 4669}
2990 4670
2991static void noinline 4671ecb_noinline
4672static void
2992infy_del (EV_P_ ev_stat *w) 4673infy_del (EV_P_ ev_stat *w)
2993{ 4674{
2994 int slot; 4675 int slot;
2995 int wd = w->wd; 4676 int wd = w->wd;
2996 4677
… …
3003 4684
3004 /* remove this watcher, if others are watching it, they will rearm */ 4685 /* remove this watcher, if others are watching it, they will rearm */
3005 inotify_rm_watch (fs_fd, wd); 4686 inotify_rm_watch (fs_fd, wd);
3006} 4687}
3007 4688
3008static void noinline 4689ecb_noinline
4690static void
3009infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4691infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
3010{ 4692{
3011 if (slot < 0) 4693 if (slot < 0)
3012 /* overflow, need to check for all hash slots */ 4694 /* overflow, need to check for all hash slots */
3013 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4695 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
3049 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4731 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3050 ofs += sizeof (struct inotify_event) + ev->len; 4732 ofs += sizeof (struct inotify_event) + ev->len;
3051 } 4733 }
3052} 4734}
3053 4735
3054inline_size unsigned int
3055ev_linux_version (void)
3056{
3057 struct utsname buf;
3058 unsigned int v;
3059 int i;
3060 char *p = buf.release;
3061
3062 if (uname (&buf))
3063 return 0;
3064
3065 for (i = 3+1; --i; )
3066 {
3067 unsigned int c = 0;
3068
3069 for (;;)
3070 {
3071 if (*p >= '0' && *p <= '9')
3072 c = c * 10 + *p++ - '0';
3073 else
3074 {
3075 p += *p == '.';
3076 break;
3077 }
3078 }
3079
3080 v = (v << 8) | c;
3081 }
3082
3083 return v;
3084}
3085
3086inline_size void 4736inline_size ecb_cold
4737void
3087ev_check_2625 (EV_P) 4738ev_check_2625 (EV_P)
3088{ 4739{
3089 /* kernels < 2.6.25 are borked 4740 /* kernels < 2.6.25 are borked
3090 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4741 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3091 */ 4742 */
… …
3096} 4747}
3097 4748
3098inline_size int 4749inline_size int
3099infy_newfd (void) 4750infy_newfd (void)
3100{ 4751{
3101#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4752#if defined IN_CLOEXEC && defined IN_NONBLOCK
3102 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4753 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3103 if (fd >= 0) 4754 if (fd >= 0)
3104 return fd; 4755 return fd;
3105#endif 4756#endif
3106 return inotify_init (); 4757 return inotify_init ();
… …
3181#else 4832#else
3182# define EV_LSTAT(p,b) lstat (p, b) 4833# define EV_LSTAT(p,b) lstat (p, b)
3183#endif 4834#endif
3184 4835
3185void 4836void
3186ev_stat_stat (EV_P_ ev_stat *w) 4837ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
3187{ 4838{
3188 if (lstat (w->path, &w->attr) < 0) 4839 if (lstat (w->path, &w->attr) < 0)
3189 w->attr.st_nlink = 0; 4840 w->attr.st_nlink = 0;
3190 else if (!w->attr.st_nlink) 4841 else if (!w->attr.st_nlink)
3191 w->attr.st_nlink = 1; 4842 w->attr.st_nlink = 1;
3192} 4843}
3193 4844
3194static void noinline 4845ecb_noinline
4846static void
3195stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4847stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3196{ 4848{
3197 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4849 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3198 4850
3199 ev_statdata prev = w->attr; 4851 ev_statdata prev = w->attr;
… …
3230 ev_feed_event (EV_A_ w, EV_STAT); 4882 ev_feed_event (EV_A_ w, EV_STAT);
3231 } 4883 }
3232} 4884}
3233 4885
3234void 4886void
3235ev_stat_start (EV_P_ ev_stat *w) 4887ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
3236{ 4888{
3237 if (expect_false (ev_is_active (w))) 4889 if (ecb_expect_false (ev_is_active (w)))
3238 return; 4890 return;
3239 4891
3240 ev_stat_stat (EV_A_ w); 4892 ev_stat_stat (EV_A_ w);
3241 4893
3242 if (w->interval < MIN_STAT_INTERVAL && w->interval) 4894 if (w->interval < MIN_STAT_INTERVAL && w->interval)
… …
3261 4913
3262 EV_FREQUENT_CHECK; 4914 EV_FREQUENT_CHECK;
3263} 4915}
3264 4916
3265void 4917void
3266ev_stat_stop (EV_P_ ev_stat *w) 4918ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
3267{ 4919{
3268 clear_pending (EV_A_ (W)w); 4920 clear_pending (EV_A_ (W)w);
3269 if (expect_false (!ev_is_active (w))) 4921 if (ecb_expect_false (!ev_is_active (w)))
3270 return; 4922 return;
3271 4923
3272 EV_FREQUENT_CHECK; 4924 EV_FREQUENT_CHECK;
3273 4925
3274#if EV_USE_INOTIFY 4926#if EV_USE_INOTIFY
… …
3287} 4939}
3288#endif 4940#endif
3289 4941
3290#if EV_IDLE_ENABLE 4942#if EV_IDLE_ENABLE
3291void 4943void
3292ev_idle_start (EV_P_ ev_idle *w) 4944ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
3293{ 4945{
3294 if (expect_false (ev_is_active (w))) 4946 if (ecb_expect_false (ev_is_active (w)))
3295 return; 4947 return;
3296 4948
3297 pri_adjust (EV_A_ (W)w); 4949 pri_adjust (EV_A_ (W)w);
3298 4950
3299 EV_FREQUENT_CHECK; 4951 EV_FREQUENT_CHECK;
… …
3302 int active = ++idlecnt [ABSPRI (w)]; 4954 int active = ++idlecnt [ABSPRI (w)];
3303 4955
3304 ++idleall; 4956 ++idleall;
3305 ev_start (EV_A_ (W)w, active); 4957 ev_start (EV_A_ (W)w, active);
3306 4958
3307 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 4959 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
3308 idles [ABSPRI (w)][active - 1] = w; 4960 idles [ABSPRI (w)][active - 1] = w;
3309 } 4961 }
3310 4962
3311 EV_FREQUENT_CHECK; 4963 EV_FREQUENT_CHECK;
3312} 4964}
3313 4965
3314void 4966void
3315ev_idle_stop (EV_P_ ev_idle *w) 4967ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
3316{ 4968{
3317 clear_pending (EV_A_ (W)w); 4969 clear_pending (EV_A_ (W)w);
3318 if (expect_false (!ev_is_active (w))) 4970 if (ecb_expect_false (!ev_is_active (w)))
3319 return; 4971 return;
3320 4972
3321 EV_FREQUENT_CHECK; 4973 EV_FREQUENT_CHECK;
3322 4974
3323 { 4975 {
… …
3334} 4986}
3335#endif 4987#endif
3336 4988
3337#if EV_PREPARE_ENABLE 4989#if EV_PREPARE_ENABLE
3338void 4990void
3339ev_prepare_start (EV_P_ ev_prepare *w) 4991ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
3340{ 4992{
3341 if (expect_false (ev_is_active (w))) 4993 if (ecb_expect_false (ev_is_active (w)))
3342 return; 4994 return;
3343 4995
3344 EV_FREQUENT_CHECK; 4996 EV_FREQUENT_CHECK;
3345 4997
3346 ev_start (EV_A_ (W)w, ++preparecnt); 4998 ev_start (EV_A_ (W)w, ++preparecnt);
3347 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4999 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
3348 prepares [preparecnt - 1] = w; 5000 prepares [preparecnt - 1] = w;
3349 5001
3350 EV_FREQUENT_CHECK; 5002 EV_FREQUENT_CHECK;
3351} 5003}
3352 5004
3353void 5005void
3354ev_prepare_stop (EV_P_ ev_prepare *w) 5006ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
3355{ 5007{
3356 clear_pending (EV_A_ (W)w); 5008 clear_pending (EV_A_ (W)w);
3357 if (expect_false (!ev_is_active (w))) 5009 if (ecb_expect_false (!ev_is_active (w)))
3358 return; 5010 return;
3359 5011
3360 EV_FREQUENT_CHECK; 5012 EV_FREQUENT_CHECK;
3361 5013
3362 { 5014 {
… …
3372} 5024}
3373#endif 5025#endif
3374 5026
3375#if EV_CHECK_ENABLE 5027#if EV_CHECK_ENABLE
3376void 5028void
3377ev_check_start (EV_P_ ev_check *w) 5029ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
3378{ 5030{
3379 if (expect_false (ev_is_active (w))) 5031 if (ecb_expect_false (ev_is_active (w)))
3380 return; 5032 return;
3381 5033
3382 EV_FREQUENT_CHECK; 5034 EV_FREQUENT_CHECK;
3383 5035
3384 ev_start (EV_A_ (W)w, ++checkcnt); 5036 ev_start (EV_A_ (W)w, ++checkcnt);
3385 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 5037 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
3386 checks [checkcnt - 1] = w; 5038 checks [checkcnt - 1] = w;
3387 5039
3388 EV_FREQUENT_CHECK; 5040 EV_FREQUENT_CHECK;
3389} 5041}
3390 5042
3391void 5043void
3392ev_check_stop (EV_P_ ev_check *w) 5044ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
3393{ 5045{
3394 clear_pending (EV_A_ (W)w); 5046 clear_pending (EV_A_ (W)w);
3395 if (expect_false (!ev_is_active (w))) 5047 if (ecb_expect_false (!ev_is_active (w)))
3396 return; 5048 return;
3397 5049
3398 EV_FREQUENT_CHECK; 5050 EV_FREQUENT_CHECK;
3399 5051
3400 { 5052 {
… …
3409 EV_FREQUENT_CHECK; 5061 EV_FREQUENT_CHECK;
3410} 5062}
3411#endif 5063#endif
3412 5064
3413#if EV_EMBED_ENABLE 5065#if EV_EMBED_ENABLE
3414void noinline 5066ecb_noinline
5067void
3415ev_embed_sweep (EV_P_ ev_embed *w) 5068ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
3416{ 5069{
3417 ev_loop (w->other, EVLOOP_NONBLOCK); 5070 ev_run (w->other, EVRUN_NOWAIT);
3418} 5071}
3419 5072
3420static void 5073static void
3421embed_io_cb (EV_P_ ev_io *io, int revents) 5074embed_io_cb (EV_P_ ev_io *io, int revents)
3422{ 5075{
3423 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 5076 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3424 5077
3425 if (ev_cb (w)) 5078 if (ev_cb (w))
3426 ev_feed_event (EV_A_ (W)w, EV_EMBED); 5079 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3427 else 5080 else
3428 ev_loop (w->other, EVLOOP_NONBLOCK); 5081 ev_run (w->other, EVRUN_NOWAIT);
3429} 5082}
3430 5083
3431static void 5084static void
3432embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 5085embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3433{ 5086{
… …
3437 EV_P = w->other; 5090 EV_P = w->other;
3438 5091
3439 while (fdchangecnt) 5092 while (fdchangecnt)
3440 { 5093 {
3441 fd_reify (EV_A); 5094 fd_reify (EV_A);
3442 ev_loop (EV_A_ EVLOOP_NONBLOCK); 5095 ev_run (EV_A_ EVRUN_NOWAIT);
3443 } 5096 }
3444 } 5097 }
3445} 5098}
3446 5099
5100#if EV_FORK_ENABLE
3447static void 5101static void
3448embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) 5102embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
3449{ 5103{
3450 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 5104 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3451 5105
… …
3453 5107
3454 { 5108 {
3455 EV_P = w->other; 5109 EV_P = w->other;
3456 5110
3457 ev_loop_fork (EV_A); 5111 ev_loop_fork (EV_A);
3458 ev_loop (EV_A_ EVLOOP_NONBLOCK); 5112 ev_run (EV_A_ EVRUN_NOWAIT);
3459 } 5113 }
3460 5114
3461 ev_embed_start (EV_A_ w); 5115 ev_embed_start (EV_A_ w);
3462} 5116}
5117#endif
3463 5118
3464#if 0 5119#if 0
3465static void 5120static void
3466embed_idle_cb (EV_P_ ev_idle *idle, int revents) 5121embed_idle_cb (EV_P_ ev_idle *idle, int revents)
3467{ 5122{
3468 ev_idle_stop (EV_A_ idle); 5123 ev_idle_stop (EV_A_ idle);
3469} 5124}
3470#endif 5125#endif
3471 5126
3472void 5127void
3473ev_embed_start (EV_P_ ev_embed *w) 5128ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
3474{ 5129{
3475 if (expect_false (ev_is_active (w))) 5130 if (ecb_expect_false (ev_is_active (w)))
3476 return; 5131 return;
3477 5132
3478 { 5133 {
3479 EV_P = w->other; 5134 EV_P = w->other;
3480 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 5135 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
… …
3488 5143
3489 ev_prepare_init (&w->prepare, embed_prepare_cb); 5144 ev_prepare_init (&w->prepare, embed_prepare_cb);
3490 ev_set_priority (&w->prepare, EV_MINPRI); 5145 ev_set_priority (&w->prepare, EV_MINPRI);
3491 ev_prepare_start (EV_A_ &w->prepare); 5146 ev_prepare_start (EV_A_ &w->prepare);
3492 5147
5148#if EV_FORK_ENABLE
3493 ev_fork_init (&w->fork, embed_fork_cb); 5149 ev_fork_init (&w->fork, embed_fork_cb);
3494 ev_fork_start (EV_A_ &w->fork); 5150 ev_fork_start (EV_A_ &w->fork);
5151#endif
3495 5152
3496 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 5153 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
3497 5154
3498 ev_start (EV_A_ (W)w, 1); 5155 ev_start (EV_A_ (W)w, 1);
3499 5156
3500 EV_FREQUENT_CHECK; 5157 EV_FREQUENT_CHECK;
3501} 5158}
3502 5159
3503void 5160void
3504ev_embed_stop (EV_P_ ev_embed *w) 5161ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
3505{ 5162{
3506 clear_pending (EV_A_ (W)w); 5163 clear_pending (EV_A_ (W)w);
3507 if (expect_false (!ev_is_active (w))) 5164 if (ecb_expect_false (!ev_is_active (w)))
3508 return; 5165 return;
3509 5166
3510 EV_FREQUENT_CHECK; 5167 EV_FREQUENT_CHECK;
3511 5168
3512 ev_io_stop (EV_A_ &w->io); 5169 ev_io_stop (EV_A_ &w->io);
3513 ev_prepare_stop (EV_A_ &w->prepare); 5170 ev_prepare_stop (EV_A_ &w->prepare);
5171#if EV_FORK_ENABLE
3514 ev_fork_stop (EV_A_ &w->fork); 5172 ev_fork_stop (EV_A_ &w->fork);
5173#endif
3515 5174
3516 ev_stop (EV_A_ (W)w); 5175 ev_stop (EV_A_ (W)w);
3517 5176
3518 EV_FREQUENT_CHECK; 5177 EV_FREQUENT_CHECK;
3519} 5178}
3520#endif 5179#endif
3521 5180
3522#if EV_FORK_ENABLE 5181#if EV_FORK_ENABLE
3523void 5182void
3524ev_fork_start (EV_P_ ev_fork *w) 5183ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
3525{ 5184{
3526 if (expect_false (ev_is_active (w))) 5185 if (ecb_expect_false (ev_is_active (w)))
3527 return; 5186 return;
3528 5187
3529 EV_FREQUENT_CHECK; 5188 EV_FREQUENT_CHECK;
3530 5189
3531 ev_start (EV_A_ (W)w, ++forkcnt); 5190 ev_start (EV_A_ (W)w, ++forkcnt);
3532 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 5191 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
3533 forks [forkcnt - 1] = w; 5192 forks [forkcnt - 1] = w;
3534 5193
3535 EV_FREQUENT_CHECK; 5194 EV_FREQUENT_CHECK;
3536} 5195}
3537 5196
3538void 5197void
3539ev_fork_stop (EV_P_ ev_fork *w) 5198ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
3540{ 5199{
3541 clear_pending (EV_A_ (W)w); 5200 clear_pending (EV_A_ (W)w);
3542 if (expect_false (!ev_is_active (w))) 5201 if (ecb_expect_false (!ev_is_active (w)))
3543 return; 5202 return;
3544 5203
3545 EV_FREQUENT_CHECK; 5204 EV_FREQUENT_CHECK;
3546 5205
3547 { 5206 {
… …
3555 5214
3556 EV_FREQUENT_CHECK; 5215 EV_FREQUENT_CHECK;
3557} 5216}
3558#endif 5217#endif
3559 5218
5219#if EV_CLEANUP_ENABLE
5220void
5221ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
5222{
5223 if (ecb_expect_false (ev_is_active (w)))
5224 return;
5225
5226 EV_FREQUENT_CHECK;
5227
5228 ev_start (EV_A_ (W)w, ++cleanupcnt);
5229 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
5230 cleanups [cleanupcnt - 1] = w;
5231
5232 /* cleanup watchers should never keep a refcount on the loop */
5233 ev_unref (EV_A);
5234 EV_FREQUENT_CHECK;
5235}
5236
5237void
5238ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
5239{
5240 clear_pending (EV_A_ (W)w);
5241 if (ecb_expect_false (!ev_is_active (w)))
5242 return;
5243
5244 EV_FREQUENT_CHECK;
5245 ev_ref (EV_A);
5246
5247 {
5248 int active = ev_active (w);
5249
5250 cleanups [active - 1] = cleanups [--cleanupcnt];
5251 ev_active (cleanups [active - 1]) = active;
5252 }
5253
5254 ev_stop (EV_A_ (W)w);
5255
5256 EV_FREQUENT_CHECK;
5257}
5258#endif
5259
3560#if EV_ASYNC_ENABLE 5260#if EV_ASYNC_ENABLE
3561void 5261void
3562ev_async_start (EV_P_ ev_async *w) 5262ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
3563{ 5263{
3564 if (expect_false (ev_is_active (w))) 5264 if (ecb_expect_false (ev_is_active (w)))
3565 return; 5265 return;
3566 5266
5267 w->sent = 0;
5268
3567 evpipe_init (EV_A); 5269 evpipe_init (EV_A);
3568 5270
3569 EV_FREQUENT_CHECK; 5271 EV_FREQUENT_CHECK;
3570 5272
3571 ev_start (EV_A_ (W)w, ++asynccnt); 5273 ev_start (EV_A_ (W)w, ++asynccnt);
3572 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 5274 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
3573 asyncs [asynccnt - 1] = w; 5275 asyncs [asynccnt - 1] = w;
3574 5276
3575 EV_FREQUENT_CHECK; 5277 EV_FREQUENT_CHECK;
3576} 5278}
3577 5279
3578void 5280void
3579ev_async_stop (EV_P_ ev_async *w) 5281ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
3580{ 5282{
3581 clear_pending (EV_A_ (W)w); 5283 clear_pending (EV_A_ (W)w);
3582 if (expect_false (!ev_is_active (w))) 5284 if (ecb_expect_false (!ev_is_active (w)))
3583 return; 5285 return;
3584 5286
3585 EV_FREQUENT_CHECK; 5287 EV_FREQUENT_CHECK;
3586 5288
3587 { 5289 {
… …
3595 5297
3596 EV_FREQUENT_CHECK; 5298 EV_FREQUENT_CHECK;
3597} 5299}
3598 5300
3599void 5301void
3600ev_async_send (EV_P_ ev_async *w) 5302ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
3601{ 5303{
3602 w->sent = 1; 5304 w->sent = 1;
3603 evpipe_write (EV_A_ &async_pending); 5305 evpipe_write (EV_A_ &async_pending);
3604} 5306}
3605#endif 5307#endif
… …
3642 5344
3643 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5345 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3644} 5346}
3645 5347
3646void 5348void
3647ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 5349ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
3648{ 5350{
3649 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5351 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3650
3651 if (expect_false (!once))
3652 {
3653 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3654 return;
3655 }
3656 5352
3657 once->cb = cb; 5353 once->cb = cb;
3658 once->arg = arg; 5354 once->arg = arg;
3659 5355
3660 ev_init (&once->io, once_cb_io); 5356 ev_init (&once->io, once_cb_io);
… …
3673} 5369}
3674 5370
3675/*****************************************************************************/ 5371/*****************************************************************************/
3676 5372
3677#if EV_WALK_ENABLE 5373#if EV_WALK_ENABLE
5374ecb_cold
3678void 5375void
3679ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 5376ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
3680{ 5377{
3681 int i, j; 5378 int i, j;
3682 ev_watcher_list *wl, *wn; 5379 ev_watcher_list *wl, *wn;
3683 5380
3684 if (types & (EV_IO | EV_EMBED)) 5381 if (types & (EV_IO | EV_EMBED))
… …
3727 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 5424 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3728#endif 5425#endif
3729 5426
3730#if EV_IDLE_ENABLE 5427#if EV_IDLE_ENABLE
3731 if (types & EV_IDLE) 5428 if (types & EV_IDLE)
3732 for (j = NUMPRI; i--; ) 5429 for (j = NUMPRI; j--; )
3733 for (i = idlecnt [j]; i--; ) 5430 for (i = idlecnt [j]; i--; )
3734 cb (EV_A_ EV_IDLE, idles [j][i]); 5431 cb (EV_A_ EV_IDLE, idles [j][i]);
3735#endif 5432#endif
3736 5433
3737#if EV_FORK_ENABLE 5434#if EV_FORK_ENABLE
… …
3790 5487
3791#if EV_MULTIPLICITY 5488#if EV_MULTIPLICITY
3792 #include "ev_wrap.h" 5489 #include "ev_wrap.h"
3793#endif 5490#endif
3794 5491
3795#ifdef __cplusplus
3796}
3797#endif
3798

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