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Comparing libev/ev.c (file contents):
Revision 1.346 by root, Thu Oct 14 05:07:04 2010 UTC vs.
Revision 1.512 by root, Fri Nov 22 19:54:38 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 EV_FEATURE_BACKENDS
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
163#endif
164 182
165#include <math.h> 183#endif
184
185/* OS X, in its infinite idiocy, actually HARDCODES
186 * a limit of 1024 into their select. Where people have brains,
187 * OS X engineers apparently have a vacuum. Or maybe they were
188 * ordered to have a vacuum, or they do anything for money.
189 * This might help. Or not.
190 * Note that this must be defined early, as other include files
191 * will rely on this define as well.
192 */
193#define _DARWIN_UNLIMITED_SELECT 1
194
166#include <stdlib.h> 195#include <stdlib.h>
167#include <string.h> 196#include <string.h>
168#include <fcntl.h> 197#include <fcntl.h>
169#include <stddef.h> 198#include <stddef.h>
170 199
… …
180 209
181#ifdef EV_H 210#ifdef EV_H
182# include EV_H 211# include EV_H
183#else 212#else
184# include "ev.h" 213# include "ev.h"
214#endif
215
216#if EV_NO_THREADS
217# undef EV_NO_SMP
218# define EV_NO_SMP 1
219# undef ECB_NO_THREADS
220# define ECB_NO_THREADS 1
221#endif
222#if EV_NO_SMP
223# undef EV_NO_SMP
224# define ECB_NO_SMP 1
185#endif 225#endif
186 226
187#ifndef _WIN32 227#ifndef _WIN32
188# include <sys/time.h> 228# include <sys/time.h>
189# include <sys/wait.h> 229# include <sys/wait.h>
190# include <unistd.h> 230# include <unistd.h>
191#else 231#else
192# include <io.h> 232# include <io.h>
193# define WIN32_LEAN_AND_MEAN 233# define WIN32_LEAN_AND_MEAN
234# include <winsock2.h>
194# include <windows.h> 235# include <windows.h>
195# ifndef EV_SELECT_IS_WINSOCKET 236# ifndef EV_SELECT_IS_WINSOCKET
196# define EV_SELECT_IS_WINSOCKET 1 237# define EV_SELECT_IS_WINSOCKET 1
197# endif 238# endif
198# undef EV_AVOID_STDIO 239# undef EV_AVOID_STDIO
199#endif 240#endif
200 241
201/* OS X, in its infinite idiocy, actually HARDCODES
202 * a limit of 1024 into their select. Where people have brains,
203 * OS X engineers apparently have a vacuum. Or maybe they were
204 * ordered to have a vacuum, or they do anything for money.
205 * This might help. Or not.
206 */
207#define _DARWIN_UNLIMITED_SELECT 1
208
209/* this block tries to deduce configuration from header-defined symbols and defaults */ 242/* this block tries to deduce configuration from header-defined symbols and defaults */
210 243
211/* try to deduce the maximum number of signals on this platform */ 244/* try to deduce the maximum number of signals on this platform */
212#if defined (EV_NSIG) 245#if defined EV_NSIG
213/* use what's provided */ 246/* use what's provided */
214#elif defined (NSIG) 247#elif defined NSIG
215# define EV_NSIG (NSIG) 248# define EV_NSIG (NSIG)
216#elif defined(_NSIG) 249#elif defined _NSIG
217# define EV_NSIG (_NSIG) 250# define EV_NSIG (_NSIG)
218#elif defined (SIGMAX) 251#elif defined SIGMAX
219# define EV_NSIG (SIGMAX+1) 252# define EV_NSIG (SIGMAX+1)
220#elif defined (SIG_MAX) 253#elif defined SIG_MAX
221# define EV_NSIG (SIG_MAX+1) 254# define EV_NSIG (SIG_MAX+1)
222#elif defined (_SIG_MAX) 255#elif defined _SIG_MAX
223# define EV_NSIG (_SIG_MAX+1) 256# define EV_NSIG (_SIG_MAX+1)
224#elif defined (MAXSIG) 257#elif defined MAXSIG
225# define EV_NSIG (MAXSIG+1) 258# define EV_NSIG (MAXSIG+1)
226#elif defined (MAX_SIG) 259#elif defined MAX_SIG
227# define EV_NSIG (MAX_SIG+1) 260# define EV_NSIG (MAX_SIG+1)
228#elif defined (SIGARRAYSIZE) 261#elif defined SIGARRAYSIZE
229# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ 262# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
230#elif defined (_sys_nsig) 263#elif defined _sys_nsig
231# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 264# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
232#else 265#else
233# error "unable to find value for NSIG, please report" 266# define EV_NSIG (8 * sizeof (sigset_t) + 1)
234/* to make it compile regardless, just remove the above line, */ 267#endif
235/* but consider reporting it, too! :) */ 268
236# define EV_NSIG 65 269#ifndef EV_USE_FLOOR
270# define EV_USE_FLOOR 0
237#endif 271#endif
238 272
239#ifndef EV_USE_CLOCK_SYSCALL 273#ifndef EV_USE_CLOCK_SYSCALL
240# if __linux && __GLIBC__ >= 2 274# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
241# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS 275# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
242# else 276# else
243# define EV_USE_CLOCK_SYSCALL 0 277# define EV_USE_CLOCK_SYSCALL 0
244# endif 278# endif
245#endif 279#endif
246 280
281#if !(_POSIX_TIMERS > 0)
282# ifndef EV_USE_MONOTONIC
283# define EV_USE_MONOTONIC 0
284# endif
285# ifndef EV_USE_REALTIME
286# define EV_USE_REALTIME 0
287# endif
288#endif
289
247#ifndef EV_USE_MONOTONIC 290#ifndef EV_USE_MONOTONIC
248# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 291# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
249# define EV_USE_MONOTONIC EV_FEATURE_OS 292# define EV_USE_MONOTONIC EV_FEATURE_OS
250# else 293# else
251# define EV_USE_MONOTONIC 0 294# define EV_USE_MONOTONIC 0
252# endif 295# endif
253#endif 296#endif
… …
290 333
291#ifndef EV_USE_PORT 334#ifndef EV_USE_PORT
292# define EV_USE_PORT 0 335# define EV_USE_PORT 0
293#endif 336#endif
294 337
338#ifndef EV_USE_LINUXAIO
339# if __linux /* libev currently assumes linux/aio_abi.h is always available on linux */
340# define EV_USE_LINUXAIO 1
341# else
342# define EV_USE_LINUXAIO 0
343# endif
344#endif
345
346#ifndef EV_USE_IOURING
347# if __linux /* later checks might disable again */
348# define EV_USE_IOURING 1
349# else
350# define EV_USE_IOURING 0
351# endif
352#endif
353
295#ifndef EV_USE_INOTIFY 354#ifndef EV_USE_INOTIFY
296# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 355# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
297# define EV_USE_INOTIFY EV_FEATURE_OS 356# define EV_USE_INOTIFY EV_FEATURE_OS
298# else 357# else
299# define EV_USE_INOTIFY 0 358# define EV_USE_INOTIFY 0
… …
340 399
341#ifndef EV_HEAP_CACHE_AT 400#ifndef EV_HEAP_CACHE_AT
342# define EV_HEAP_CACHE_AT EV_FEATURE_DATA 401# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
343#endif 402#endif
344 403
404#ifdef __ANDROID__
405/* supposedly, android doesn't typedef fd_mask */
406# undef EV_USE_SELECT
407# define EV_USE_SELECT 0
408/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
409# undef EV_USE_CLOCK_SYSCALL
410# define EV_USE_CLOCK_SYSCALL 0
411#endif
412
413/* aix's poll.h seems to cause lots of trouble */
414#ifdef _AIX
415/* AIX has a completely broken poll.h header */
416# undef EV_USE_POLL
417# define EV_USE_POLL 0
418#endif
419
345/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 420/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
346/* which makes programs even slower. might work on other unices, too. */ 421/* which makes programs even slower. might work on other unices, too. */
347#if EV_USE_CLOCK_SYSCALL 422#if EV_USE_CLOCK_SYSCALL
348# include <syscall.h> 423# include <sys/syscall.h>
349# ifdef SYS_clock_gettime 424# ifdef SYS_clock_gettime
350# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 425# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
351# undef EV_USE_MONOTONIC 426# undef EV_USE_MONOTONIC
352# define EV_USE_MONOTONIC 1 427# define EV_USE_MONOTONIC 1
428# define EV_NEED_SYSCALL 1
353# else 429# else
354# undef EV_USE_CLOCK_SYSCALL 430# undef EV_USE_CLOCK_SYSCALL
355# define EV_USE_CLOCK_SYSCALL 0 431# define EV_USE_CLOCK_SYSCALL 0
356# endif 432# endif
357#endif 433#endif
358 434
359/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 435/* this block fixes any misconfiguration where we know we run into trouble otherwise */
360 436
361#ifdef _AIX
362/* AIX has a completely broken poll.h header */
363# undef EV_USE_POLL
364# define EV_USE_POLL 0
365#endif
366
367#ifndef CLOCK_MONOTONIC 437#ifndef CLOCK_MONOTONIC
368# undef EV_USE_MONOTONIC 438# undef EV_USE_MONOTONIC
369# define EV_USE_MONOTONIC 0 439# define EV_USE_MONOTONIC 0
370#endif 440#endif
371 441
… …
377#if !EV_STAT_ENABLE 447#if !EV_STAT_ENABLE
378# undef EV_USE_INOTIFY 448# undef EV_USE_INOTIFY
379# define EV_USE_INOTIFY 0 449# define EV_USE_INOTIFY 0
380#endif 450#endif
381 451
452#if __linux && EV_USE_IOURING
453# include <linux/version.h>
454# if LINUX_VERSION_CODE < KERNEL_VERSION(4,14,0)
455# undef EV_USE_IOURING
456# define EV_USE_IOURING 0
457# endif
458#endif
459
382#if !EV_USE_NANOSLEEP 460#if !EV_USE_NANOSLEEP
383# ifndef _WIN32 461/* hp-ux has it in sys/time.h, which we unconditionally include above */
462# if !defined _WIN32 && !defined __hpux
384# include <sys/select.h> 463# include <sys/select.h>
385# endif 464# endif
386#endif 465#endif
387 466
467#if EV_USE_LINUXAIO
468# include <sys/syscall.h>
469# if SYS_io_getevents && EV_USE_EPOLL /* linuxaio backend requires epoll backend */
470# define EV_NEED_SYSCALL 1
471# else
472# undef EV_USE_LINUXAIO
473# define EV_USE_LINUXAIO 0
474# endif
475#endif
476
477#if EV_USE_IOURING
478# include <sys/syscall.h>
479# if !SYS_io_uring_setup && __linux && !__alpha
480# define SYS_io_uring_setup 425
481# define SYS_io_uring_enter 426
482# define SYS_io_uring_wregister 427
483# endif
484# if SYS_io_uring_setup && EV_USE_EPOLL /* iouring backend requires epoll backend */
485# define EV_NEED_SYSCALL 1
486# else
487# undef EV_USE_IOURING
488# define EV_USE_IOURING 0
489# endif
490#endif
491
388#if EV_USE_INOTIFY 492#if EV_USE_INOTIFY
389# include <sys/utsname.h>
390# include <sys/statfs.h> 493# include <sys/statfs.h>
391# include <sys/inotify.h> 494# include <sys/inotify.h>
392/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 495/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
393# ifndef IN_DONT_FOLLOW 496# ifndef IN_DONT_FOLLOW
394# undef EV_USE_INOTIFY 497# undef EV_USE_INOTIFY
395# define EV_USE_INOTIFY 0 498# define EV_USE_INOTIFY 0
396# endif 499# endif
397#endif
398
399#if EV_SELECT_IS_WINSOCKET
400# include <winsock.h>
401#endif 500#endif
402 501
403#if EV_USE_EVENTFD 502#if EV_USE_EVENTFD
404/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 503/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
405# include <stdint.h> 504# include <stdint.h>
… …
411# define EFD_CLOEXEC O_CLOEXEC 510# define EFD_CLOEXEC O_CLOEXEC
412# else 511# else
413# define EFD_CLOEXEC 02000000 512# define EFD_CLOEXEC 02000000
414# endif 513# endif
415# endif 514# endif
416# ifdef __cplusplus
417extern "C" {
418# endif
419int (eventfd) (unsigned int initval, int flags); 515EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
420# ifdef __cplusplus
421}
422# endif
423#endif 516#endif
424 517
425#if EV_USE_SIGNALFD 518#if EV_USE_SIGNALFD
426/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 519/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
427# include <stdint.h> 520# include <stdint.h>
… …
433# define SFD_CLOEXEC O_CLOEXEC 526# define SFD_CLOEXEC O_CLOEXEC
434# else 527# else
435# define SFD_CLOEXEC 02000000 528# define SFD_CLOEXEC 02000000
436# endif 529# endif
437# endif 530# endif
438# ifdef __cplusplus
439extern "C" {
440# endif
441int signalfd (int fd, const sigset_t *mask, int flags); 531EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
442 532
443struct signalfd_siginfo 533struct signalfd_siginfo
444{ 534{
445 uint32_t ssi_signo; 535 uint32_t ssi_signo;
446 char pad[128 - sizeof (uint32_t)]; 536 char pad[128 - sizeof (uint32_t)];
447}; 537};
448# ifdef __cplusplus
449}
450# endif 538#endif
451#endif
452 539
453 540/*****************************************************************************/
454/**/
455 541
456#if EV_VERIFY >= 3 542#if EV_VERIFY >= 3
457# define EV_FREQUENT_CHECK ev_verify (EV_A) 543# define EV_FREQUENT_CHECK ev_verify (EV_A)
458#else 544#else
459# define EV_FREQUENT_CHECK do { } while (0) 545# define EV_FREQUENT_CHECK do { } while (0)
460#endif 546#endif
461 547
462/* 548/*
463 * This is used to avoid floating point rounding problems. 549 * This is used to work around floating point rounding problems.
464 * It is added to ev_rt_now when scheduling periodics
465 * to ensure progress, time-wise, even when rounding
466 * errors are against us.
467 * This value is good at least till the year 4000. 550 * This value is good at least till the year 4000.
468 * Better solutions welcome.
469 */ 551 */
470#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 552#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
553/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
471 554
472#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 555#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
473#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 556#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
474 557
558/* find a portable timestamp that is "always" in the future but fits into time_t.
559 * this is quite hard, and we are mostly guessing - we handle 32 bit signed/unsigned time_t,
560 * and sizes larger than 32 bit, and maybe the unlikely floating point time_t */
561#define EV_TSTAMP_HUGE \
562 (sizeof (time_t) >= 8 ? 10000000000000. \
563 : 0 < (time_t)4294967295 ? 4294967295. \
564 : 2147483647.) \
565
566#ifndef EV_TS_CONST
567# define EV_TS_CONST(nv) nv
568# define EV_TS_TO_MSEC(a) a * 1e3 + 0.9999
569# define EV_TS_FROM_USEC(us) us * 1e-6
570# define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
571# define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
572# define EV_TV_GET(tv) ((tv).tv_sec + (tv).tv_usec * 1e-6)
573# define EV_TS_GET(ts) ((ts).tv_sec + (ts).tv_nsec * 1e-9)
574#endif
575
576/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
577/* ECB.H BEGIN */
578/*
579 * libecb - http://software.schmorp.de/pkg/libecb
580 *
581 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
582 * Copyright (©) 2011 Emanuele Giaquinta
583 * All rights reserved.
584 *
585 * Redistribution and use in source and binary forms, with or without modifica-
586 * tion, are permitted provided that the following conditions are met:
587 *
588 * 1. Redistributions of source code must retain the above copyright notice,
589 * this list of conditions and the following disclaimer.
590 *
591 * 2. Redistributions in binary form must reproduce the above copyright
592 * notice, this list of conditions and the following disclaimer in the
593 * documentation and/or other materials provided with the distribution.
594 *
595 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
596 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
597 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
598 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
599 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
600 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
601 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
602 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
603 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
604 * OF THE POSSIBILITY OF SUCH DAMAGE.
605 *
606 * Alternatively, the contents of this file may be used under the terms of
607 * the GNU General Public License ("GPL") version 2 or any later version,
608 * in which case the provisions of the GPL are applicable instead of
609 * the above. If you wish to allow the use of your version of this file
610 * only under the terms of the GPL and not to allow others to use your
611 * version of this file under the BSD license, indicate your decision
612 * by deleting the provisions above and replace them with the notice
613 * and other provisions required by the GPL. If you do not delete the
614 * provisions above, a recipient may use your version of this file under
615 * either the BSD or the GPL.
616 */
617
618#ifndef ECB_H
619#define ECB_H
620
621/* 16 bits major, 16 bits minor */
622#define ECB_VERSION 0x00010006
623
624#ifdef _WIN32
625 typedef signed char int8_t;
626 typedef unsigned char uint8_t;
627 typedef signed short int16_t;
628 typedef unsigned short uint16_t;
629 typedef signed int int32_t;
630 typedef unsigned int uint32_t;
475#if __GNUC__ >= 4 631 #if __GNUC__
476# define expect(expr,value) __builtin_expect ((expr),(value)) 632 typedef signed long long int64_t;
477# define noinline __attribute__ ((noinline)) 633 typedef unsigned long long uint64_t;
634 #else /* _MSC_VER || __BORLANDC__ */
635 typedef signed __int64 int64_t;
636 typedef unsigned __int64 uint64_t;
637 #endif
638 #ifdef _WIN64
639 #define ECB_PTRSIZE 8
640 typedef uint64_t uintptr_t;
641 typedef int64_t intptr_t;
642 #else
643 #define ECB_PTRSIZE 4
644 typedef uint32_t uintptr_t;
645 typedef int32_t intptr_t;
646 #endif
478#else 647#else
479# define expect(expr,value) (expr) 648 #include <inttypes.h>
480# define noinline 649 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
481# if __STDC_VERSION__ < 199901L && __GNUC__ < 2 650 #define ECB_PTRSIZE 8
482# define inline 651 #else
652 #define ECB_PTRSIZE 4
653 #endif
483# endif 654#endif
655
656#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
657#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
658
659/* work around x32 idiocy by defining proper macros */
660#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
661 #if _ILP32
662 #define ECB_AMD64_X32 1
663 #else
664 #define ECB_AMD64 1
484#endif 665 #endif
666#endif
485 667
668/* many compilers define _GNUC_ to some versions but then only implement
669 * what their idiot authors think are the "more important" extensions,
670 * causing enormous grief in return for some better fake benchmark numbers.
671 * or so.
672 * we try to detect these and simply assume they are not gcc - if they have
673 * an issue with that they should have done it right in the first place.
674 */
675#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
676 #define ECB_GCC_VERSION(major,minor) 0
677#else
678 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
679#endif
680
681#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
682
683#if __clang__ && defined __has_builtin
684 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
685#else
686 #define ECB_CLANG_BUILTIN(x) 0
687#endif
688
689#if __clang__ && defined __has_extension
690 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
691#else
692 #define ECB_CLANG_EXTENSION(x) 0
693#endif
694
695#define ECB_CPP (__cplusplus+0)
696#define ECB_CPP11 (__cplusplus >= 201103L)
697#define ECB_CPP14 (__cplusplus >= 201402L)
698#define ECB_CPP17 (__cplusplus >= 201703L)
699
700#if ECB_CPP
701 #define ECB_C 0
702 #define ECB_STDC_VERSION 0
703#else
704 #define ECB_C 1
705 #define ECB_STDC_VERSION __STDC_VERSION__
706#endif
707
708#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
709#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
710#define ECB_C17 (ECB_STDC_VERSION >= 201710L)
711
712#if ECB_CPP
713 #define ECB_EXTERN_C extern "C"
714 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
715 #define ECB_EXTERN_C_END }
716#else
717 #define ECB_EXTERN_C extern
718 #define ECB_EXTERN_C_BEG
719 #define ECB_EXTERN_C_END
720#endif
721
722/*****************************************************************************/
723
724/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
725/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
726
727#if ECB_NO_THREADS
728 #define ECB_NO_SMP 1
729#endif
730
731#if ECB_NO_SMP
732 #define ECB_MEMORY_FENCE do { } while (0)
733#endif
734
735/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
736#if __xlC__ && ECB_CPP
737 #include <builtins.h>
738#endif
739
740#if 1400 <= _MSC_VER
741 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
742#endif
743
744#ifndef ECB_MEMORY_FENCE
745 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
746 #define ECB_MEMORY_FENCE_RELAXED __asm__ __volatile__ ("" : : : "memory")
747 #if __i386 || __i386__
748 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
749 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
750 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
751 #elif ECB_GCC_AMD64
752 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
753 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
754 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
755 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
756 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
757 #elif defined __ARM_ARCH_2__ \
758 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
759 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
760 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
761 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
762 || defined __ARM_ARCH_5TEJ__
763 /* should not need any, unless running old code on newer cpu - arm doesn't support that */
764 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
765 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
766 || defined __ARM_ARCH_6T2__
767 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
768 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
769 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
770 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
771 #elif __aarch64__
772 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
773 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
774 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
775 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
776 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
777 #elif defined __s390__ || defined __s390x__
778 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
779 #elif defined __mips__
780 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
781 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
782 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
783 #elif defined __alpha__
784 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
785 #elif defined __hppa__
786 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
787 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
788 #elif defined __ia64__
789 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
790 #elif defined __m68k__
791 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
792 #elif defined __m88k__
793 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
794 #elif defined __sh__
795 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
796 #endif
797 #endif
798#endif
799
800#ifndef ECB_MEMORY_FENCE
801 #if ECB_GCC_VERSION(4,7)
802 /* see comment below (stdatomic.h) about the C11 memory model. */
803 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
804 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
805 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
806 #define ECB_MEMORY_FENCE_RELAXED __atomic_thread_fence (__ATOMIC_RELAXED)
807
808 #elif ECB_CLANG_EXTENSION(c_atomic)
809 /* see comment below (stdatomic.h) about the C11 memory model. */
810 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
811 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
812 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
813 #define ECB_MEMORY_FENCE_RELAXED __c11_atomic_thread_fence (__ATOMIC_RELAXED)
814
815 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
816 #define ECB_MEMORY_FENCE __sync_synchronize ()
817 #elif _MSC_VER >= 1500 /* VC++ 2008 */
818 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
819 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
820 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
821 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
822 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
823 #elif _MSC_VER >= 1400 /* VC++ 2005 */
824 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
825 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
826 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
827 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
828 #elif defined _WIN32
829 #include <WinNT.h>
830 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
831 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
832 #include <mbarrier.h>
833 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
834 #define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier ()
835 #define ECB_MEMORY_FENCE_RELEASE __machine_rel_barrier ()
836 #define ECB_MEMORY_FENCE_RELAXED __compiler_barrier ()
837 #elif __xlC__
838 #define ECB_MEMORY_FENCE __sync ()
839 #endif
840#endif
841
842#ifndef ECB_MEMORY_FENCE
843 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
844 /* we assume that these memory fences work on all variables/all memory accesses, */
845 /* not just C11 atomics and atomic accesses */
846 #include <stdatomic.h>
847 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
848 #define ECB_MEMORY_FENCE_ACQUIRE atomic_thread_fence (memory_order_acquire)
849 #define ECB_MEMORY_FENCE_RELEASE atomic_thread_fence (memory_order_release)
850 #endif
851#endif
852
853#ifndef ECB_MEMORY_FENCE
854 #if !ECB_AVOID_PTHREADS
855 /*
856 * if you get undefined symbol references to pthread_mutex_lock,
857 * or failure to find pthread.h, then you should implement
858 * the ECB_MEMORY_FENCE operations for your cpu/compiler
859 * OR provide pthread.h and link against the posix thread library
860 * of your system.
861 */
862 #include <pthread.h>
863 #define ECB_NEEDS_PTHREADS 1
864 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
865
866 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
867 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
868 #endif
869#endif
870
871#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
872 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
873#endif
874
875#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
876 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
877#endif
878
879#if !defined ECB_MEMORY_FENCE_RELAXED && defined ECB_MEMORY_FENCE
880 #define ECB_MEMORY_FENCE_RELAXED ECB_MEMORY_FENCE /* very heavy-handed */
881#endif
882
883/*****************************************************************************/
884
885#if ECB_CPP
886 #define ecb_inline static inline
887#elif ECB_GCC_VERSION(2,5)
888 #define ecb_inline static __inline__
889#elif ECB_C99
890 #define ecb_inline static inline
891#else
892 #define ecb_inline static
893#endif
894
895#if ECB_GCC_VERSION(3,3)
896 #define ecb_restrict __restrict__
897#elif ECB_C99
898 #define ecb_restrict restrict
899#else
900 #define ecb_restrict
901#endif
902
903typedef int ecb_bool;
904
905#define ECB_CONCAT_(a, b) a ## b
906#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
907#define ECB_STRINGIFY_(a) # a
908#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
909#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
910
911#define ecb_function_ ecb_inline
912
913#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
914 #define ecb_attribute(attrlist) __attribute__ (attrlist)
915#else
916 #define ecb_attribute(attrlist)
917#endif
918
919#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
920 #define ecb_is_constant(expr) __builtin_constant_p (expr)
921#else
922 /* possible C11 impl for integral types
923 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
924 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
925
926 #define ecb_is_constant(expr) 0
927#endif
928
929#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
930 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
931#else
932 #define ecb_expect(expr,value) (expr)
933#endif
934
935#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
936 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
937#else
938 #define ecb_prefetch(addr,rw,locality)
939#endif
940
941/* no emulation for ecb_decltype */
942#if ECB_CPP11
943 // older implementations might have problems with decltype(x)::type, work around it
944 template<class T> struct ecb_decltype_t { typedef T type; };
945 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
946#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
947 #define ecb_decltype(x) __typeof__ (x)
948#endif
949
950#if _MSC_VER >= 1300
951 #define ecb_deprecated __declspec (deprecated)
952#else
953 #define ecb_deprecated ecb_attribute ((__deprecated__))
954#endif
955
956#if _MSC_VER >= 1500
957 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
958#elif ECB_GCC_VERSION(4,5)
959 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
960#else
961 #define ecb_deprecated_message(msg) ecb_deprecated
962#endif
963
964#if _MSC_VER >= 1400
965 #define ecb_noinline __declspec (noinline)
966#else
967 #define ecb_noinline ecb_attribute ((__noinline__))
968#endif
969
970#define ecb_unused ecb_attribute ((__unused__))
971#define ecb_const ecb_attribute ((__const__))
972#define ecb_pure ecb_attribute ((__pure__))
973
974#if ECB_C11 || __IBMC_NORETURN
975 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
976 #define ecb_noreturn _Noreturn
977#elif ECB_CPP11
978 #define ecb_noreturn [[noreturn]]
979#elif _MSC_VER >= 1200
980 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
981 #define ecb_noreturn __declspec (noreturn)
982#else
983 #define ecb_noreturn ecb_attribute ((__noreturn__))
984#endif
985
986#if ECB_GCC_VERSION(4,3)
987 #define ecb_artificial ecb_attribute ((__artificial__))
988 #define ecb_hot ecb_attribute ((__hot__))
989 #define ecb_cold ecb_attribute ((__cold__))
990#else
991 #define ecb_artificial
992 #define ecb_hot
993 #define ecb_cold
994#endif
995
996/* put around conditional expressions if you are very sure that the */
997/* expression is mostly true or mostly false. note that these return */
998/* booleans, not the expression. */
486#define expect_false(expr) expect ((expr) != 0, 0) 999#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
487#define expect_true(expr) expect ((expr) != 0, 1) 1000#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
1001/* for compatibility to the rest of the world */
1002#define ecb_likely(expr) ecb_expect_true (expr)
1003#define ecb_unlikely(expr) ecb_expect_false (expr)
1004
1005/* count trailing zero bits and count # of one bits */
1006#if ECB_GCC_VERSION(3,4) \
1007 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
1008 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
1009 && ECB_CLANG_BUILTIN(__builtin_popcount))
1010 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
1011 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
1012 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
1013 #define ecb_ctz32(x) __builtin_ctz (x)
1014 #define ecb_ctz64(x) __builtin_ctzll (x)
1015 #define ecb_popcount32(x) __builtin_popcount (x)
1016 /* no popcountll */
1017#else
1018 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
1019 ecb_function_ ecb_const int
1020 ecb_ctz32 (uint32_t x)
1021 {
1022#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1023 unsigned long r;
1024 _BitScanForward (&r, x);
1025 return (int)r;
1026#else
1027 int r = 0;
1028
1029 x &= ~x + 1; /* this isolates the lowest bit */
1030
1031#if ECB_branchless_on_i386
1032 r += !!(x & 0xaaaaaaaa) << 0;
1033 r += !!(x & 0xcccccccc) << 1;
1034 r += !!(x & 0xf0f0f0f0) << 2;
1035 r += !!(x & 0xff00ff00) << 3;
1036 r += !!(x & 0xffff0000) << 4;
1037#else
1038 if (x & 0xaaaaaaaa) r += 1;
1039 if (x & 0xcccccccc) r += 2;
1040 if (x & 0xf0f0f0f0) r += 4;
1041 if (x & 0xff00ff00) r += 8;
1042 if (x & 0xffff0000) r += 16;
1043#endif
1044
1045 return r;
1046#endif
1047 }
1048
1049 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
1050 ecb_function_ ecb_const int
1051 ecb_ctz64 (uint64_t x)
1052 {
1053#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1054 unsigned long r;
1055 _BitScanForward64 (&r, x);
1056 return (int)r;
1057#else
1058 int shift = x & 0xffffffff ? 0 : 32;
1059 return ecb_ctz32 (x >> shift) + shift;
1060#endif
1061 }
1062
1063 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
1064 ecb_function_ ecb_const int
1065 ecb_popcount32 (uint32_t x)
1066 {
1067 x -= (x >> 1) & 0x55555555;
1068 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
1069 x = ((x >> 4) + x) & 0x0f0f0f0f;
1070 x *= 0x01010101;
1071
1072 return x >> 24;
1073 }
1074
1075 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
1076 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
1077 {
1078#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1079 unsigned long r;
1080 _BitScanReverse (&r, x);
1081 return (int)r;
1082#else
1083 int r = 0;
1084
1085 if (x >> 16) { x >>= 16; r += 16; }
1086 if (x >> 8) { x >>= 8; r += 8; }
1087 if (x >> 4) { x >>= 4; r += 4; }
1088 if (x >> 2) { x >>= 2; r += 2; }
1089 if (x >> 1) { r += 1; }
1090
1091 return r;
1092#endif
1093 }
1094
1095 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
1096 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
1097 {
1098#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1099 unsigned long r;
1100 _BitScanReverse64 (&r, x);
1101 return (int)r;
1102#else
1103 int r = 0;
1104
1105 if (x >> 32) { x >>= 32; r += 32; }
1106
1107 return r + ecb_ld32 (x);
1108#endif
1109 }
1110#endif
1111
1112ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
1113ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
1114ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
1115ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
1116
1117ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
1118ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
1119{
1120 return ( (x * 0x0802U & 0x22110U)
1121 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
1122}
1123
1124ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
1125ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
1126{
1127 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
1128 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
1129 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
1130 x = ( x >> 8 ) | ( x << 8);
1131
1132 return x;
1133}
1134
1135ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
1136ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
1137{
1138 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
1139 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
1140 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
1141 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
1142 x = ( x >> 16 ) | ( x << 16);
1143
1144 return x;
1145}
1146
1147/* popcount64 is only available on 64 bit cpus as gcc builtin */
1148/* so for this version we are lazy */
1149ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
1150ecb_function_ ecb_const int
1151ecb_popcount64 (uint64_t x)
1152{
1153 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
1154}
1155
1156ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
1157ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
1158ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
1159ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
1160ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
1161ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
1162ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
1163ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
1164
1165ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
1166ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
1167ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
1168ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
1169ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
1170ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
1171ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
1172ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
1173
1174#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1175 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1176 #define ecb_bswap16(x) __builtin_bswap16 (x)
1177 #else
1178 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1179 #endif
1180 #define ecb_bswap32(x) __builtin_bswap32 (x)
1181 #define ecb_bswap64(x) __builtin_bswap64 (x)
1182#elif _MSC_VER
1183 #include <stdlib.h>
1184 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1185 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1186 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
1187#else
1188 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
1189 ecb_function_ ecb_const uint16_t
1190 ecb_bswap16 (uint16_t x)
1191 {
1192 return ecb_rotl16 (x, 8);
1193 }
1194
1195 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
1196 ecb_function_ ecb_const uint32_t
1197 ecb_bswap32 (uint32_t x)
1198 {
1199 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
1200 }
1201
1202 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
1203 ecb_function_ ecb_const uint64_t
1204 ecb_bswap64 (uint64_t x)
1205 {
1206 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
1207 }
1208#endif
1209
1210#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
1211 #define ecb_unreachable() __builtin_unreachable ()
1212#else
1213 /* this seems to work fine, but gcc always emits a warning for it :/ */
1214 ecb_inline ecb_noreturn void ecb_unreachable (void);
1215 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
1216#endif
1217
1218/* try to tell the compiler that some condition is definitely true */
1219#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
1220
1221ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
1222ecb_inline ecb_const uint32_t
1223ecb_byteorder_helper (void)
1224{
1225 /* the union code still generates code under pressure in gcc, */
1226 /* but less than using pointers, and always seems to */
1227 /* successfully return a constant. */
1228 /* the reason why we have this horrible preprocessor mess */
1229 /* is to avoid it in all cases, at least on common architectures */
1230 /* or when using a recent enough gcc version (>= 4.6) */
1231#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1232 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1233 #define ECB_LITTLE_ENDIAN 1
1234 return 0x44332211;
1235#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1236 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1237 #define ECB_BIG_ENDIAN 1
1238 return 0x11223344;
1239#else
1240 union
1241 {
1242 uint8_t c[4];
1243 uint32_t u;
1244 } u = { 0x11, 0x22, 0x33, 0x44 };
1245 return u.u;
1246#endif
1247}
1248
1249ecb_inline ecb_const ecb_bool ecb_big_endian (void);
1250ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
1251ecb_inline ecb_const ecb_bool ecb_little_endian (void);
1252ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
1253
1254#if ECB_GCC_VERSION(3,0) || ECB_C99
1255 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1256#else
1257 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1258#endif
1259
1260#if ECB_CPP
1261 template<typename T>
1262 static inline T ecb_div_rd (T val, T div)
1263 {
1264 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1265 }
1266 template<typename T>
1267 static inline T ecb_div_ru (T val, T div)
1268 {
1269 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1270 }
1271#else
1272 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1273 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1274#endif
1275
1276#if ecb_cplusplus_does_not_suck
1277 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1278 template<typename T, int N>
1279 static inline int ecb_array_length (const T (&arr)[N])
1280 {
1281 return N;
1282 }
1283#else
1284 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1285#endif
1286
1287ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1288ecb_function_ ecb_const uint32_t
1289ecb_binary16_to_binary32 (uint32_t x)
1290{
1291 unsigned int s = (x & 0x8000) << (31 - 15);
1292 int e = (x >> 10) & 0x001f;
1293 unsigned int m = x & 0x03ff;
1294
1295 if (ecb_expect_false (e == 31))
1296 /* infinity or NaN */
1297 e = 255 - (127 - 15);
1298 else if (ecb_expect_false (!e))
1299 {
1300 if (ecb_expect_true (!m))
1301 /* zero, handled by code below by forcing e to 0 */
1302 e = 0 - (127 - 15);
1303 else
1304 {
1305 /* subnormal, renormalise */
1306 unsigned int s = 10 - ecb_ld32 (m);
1307
1308 m = (m << s) & 0x3ff; /* mask implicit bit */
1309 e -= s - 1;
1310 }
1311 }
1312
1313 /* e and m now are normalised, or zero, (or inf or nan) */
1314 e += 127 - 15;
1315
1316 return s | (e << 23) | (m << (23 - 10));
1317}
1318
1319ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1320ecb_function_ ecb_const uint16_t
1321ecb_binary32_to_binary16 (uint32_t x)
1322{
1323 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1324 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1325 unsigned int m = x & 0x007fffff;
1326
1327 x &= 0x7fffffff;
1328
1329 /* if it's within range of binary16 normals, use fast path */
1330 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1331 {
1332 /* mantissa round-to-even */
1333 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1334
1335 /* handle overflow */
1336 if (ecb_expect_false (m >= 0x00800000))
1337 {
1338 m >>= 1;
1339 e += 1;
1340 }
1341
1342 return s | (e << 10) | (m >> (23 - 10));
1343 }
1344
1345 /* handle large numbers and infinity */
1346 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1347 return s | 0x7c00;
1348
1349 /* handle zero, subnormals and small numbers */
1350 if (ecb_expect_true (x < 0x38800000))
1351 {
1352 /* zero */
1353 if (ecb_expect_true (!x))
1354 return s;
1355
1356 /* handle subnormals */
1357
1358 /* too small, will be zero */
1359 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1360 return s;
1361
1362 m |= 0x00800000; /* make implicit bit explicit */
1363
1364 /* very tricky - we need to round to the nearest e (+10) bit value */
1365 {
1366 unsigned int bits = 14 - e;
1367 unsigned int half = (1 << (bits - 1)) - 1;
1368 unsigned int even = (m >> bits) & 1;
1369
1370 /* if this overflows, we will end up with a normalised number */
1371 m = (m + half + even) >> bits;
1372 }
1373
1374 return s | m;
1375 }
1376
1377 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1378 m >>= 13;
1379
1380 return s | 0x7c00 | m | !m;
1381}
1382
1383/*******************************************************************************/
1384/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1385
1386/* basically, everything uses "ieee pure-endian" floating point numbers */
1387/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1388#if 0 \
1389 || __i386 || __i386__ \
1390 || ECB_GCC_AMD64 \
1391 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1392 || defined __s390__ || defined __s390x__ \
1393 || defined __mips__ \
1394 || defined __alpha__ \
1395 || defined __hppa__ \
1396 || defined __ia64__ \
1397 || defined __m68k__ \
1398 || defined __m88k__ \
1399 || defined __sh__ \
1400 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1401 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1402 || defined __aarch64__
1403 #define ECB_STDFP 1
1404 #include <string.h> /* for memcpy */
1405#else
1406 #define ECB_STDFP 0
1407#endif
1408
1409#ifndef ECB_NO_LIBM
1410
1411 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1412
1413 /* only the oldest of old doesn't have this one. solaris. */
1414 #ifdef INFINITY
1415 #define ECB_INFINITY INFINITY
1416 #else
1417 #define ECB_INFINITY HUGE_VAL
1418 #endif
1419
1420 #ifdef NAN
1421 #define ECB_NAN NAN
1422 #else
1423 #define ECB_NAN ECB_INFINITY
1424 #endif
1425
1426 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1427 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1428 #define ecb_frexpf(x,e) frexpf ((x), (e))
1429 #else
1430 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1431 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1432 #endif
1433
1434 /* convert a float to ieee single/binary32 */
1435 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1436 ecb_function_ ecb_const uint32_t
1437 ecb_float_to_binary32 (float x)
1438 {
1439 uint32_t r;
1440
1441 #if ECB_STDFP
1442 memcpy (&r, &x, 4);
1443 #else
1444 /* slow emulation, works for anything but -0 */
1445 uint32_t m;
1446 int e;
1447
1448 if (x == 0e0f ) return 0x00000000U;
1449 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1450 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1451 if (x != x ) return 0x7fbfffffU;
1452
1453 m = ecb_frexpf (x, &e) * 0x1000000U;
1454
1455 r = m & 0x80000000U;
1456
1457 if (r)
1458 m = -m;
1459
1460 if (e <= -126)
1461 {
1462 m &= 0xffffffU;
1463 m >>= (-125 - e);
1464 e = -126;
1465 }
1466
1467 r |= (e + 126) << 23;
1468 r |= m & 0x7fffffU;
1469 #endif
1470
1471 return r;
1472 }
1473
1474 /* converts an ieee single/binary32 to a float */
1475 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1476 ecb_function_ ecb_const float
1477 ecb_binary32_to_float (uint32_t x)
1478 {
1479 float r;
1480
1481 #if ECB_STDFP
1482 memcpy (&r, &x, 4);
1483 #else
1484 /* emulation, only works for normals and subnormals and +0 */
1485 int neg = x >> 31;
1486 int e = (x >> 23) & 0xffU;
1487
1488 x &= 0x7fffffU;
1489
1490 if (e)
1491 x |= 0x800000U;
1492 else
1493 e = 1;
1494
1495 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1496 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1497
1498 r = neg ? -r : r;
1499 #endif
1500
1501 return r;
1502 }
1503
1504 /* convert a double to ieee double/binary64 */
1505 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1506 ecb_function_ ecb_const uint64_t
1507 ecb_double_to_binary64 (double x)
1508 {
1509 uint64_t r;
1510
1511 #if ECB_STDFP
1512 memcpy (&r, &x, 8);
1513 #else
1514 /* slow emulation, works for anything but -0 */
1515 uint64_t m;
1516 int e;
1517
1518 if (x == 0e0 ) return 0x0000000000000000U;
1519 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1520 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1521 if (x != x ) return 0X7ff7ffffffffffffU;
1522
1523 m = frexp (x, &e) * 0x20000000000000U;
1524
1525 r = m & 0x8000000000000000;;
1526
1527 if (r)
1528 m = -m;
1529
1530 if (e <= -1022)
1531 {
1532 m &= 0x1fffffffffffffU;
1533 m >>= (-1021 - e);
1534 e = -1022;
1535 }
1536
1537 r |= ((uint64_t)(e + 1022)) << 52;
1538 r |= m & 0xfffffffffffffU;
1539 #endif
1540
1541 return r;
1542 }
1543
1544 /* converts an ieee double/binary64 to a double */
1545 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1546 ecb_function_ ecb_const double
1547 ecb_binary64_to_double (uint64_t x)
1548 {
1549 double r;
1550
1551 #if ECB_STDFP
1552 memcpy (&r, &x, 8);
1553 #else
1554 /* emulation, only works for normals and subnormals and +0 */
1555 int neg = x >> 63;
1556 int e = (x >> 52) & 0x7ffU;
1557
1558 x &= 0xfffffffffffffU;
1559
1560 if (e)
1561 x |= 0x10000000000000U;
1562 else
1563 e = 1;
1564
1565 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1566 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1567
1568 r = neg ? -r : r;
1569 #endif
1570
1571 return r;
1572 }
1573
1574 /* convert a float to ieee half/binary16 */
1575 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1576 ecb_function_ ecb_const uint16_t
1577 ecb_float_to_binary16 (float x)
1578 {
1579 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1580 }
1581
1582 /* convert an ieee half/binary16 to float */
1583 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1584 ecb_function_ ecb_const float
1585 ecb_binary16_to_float (uint16_t x)
1586 {
1587 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1588 }
1589
1590#endif
1591
1592#endif
1593
1594/* ECB.H END */
1595
1596#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1597/* if your architecture doesn't need memory fences, e.g. because it is
1598 * single-cpu/core, or if you use libev in a project that doesn't use libev
1599 * from multiple threads, then you can define ECB_NO_THREADS when compiling
1600 * libev, in which cases the memory fences become nops.
1601 * alternatively, you can remove this #error and link against libpthread,
1602 * which will then provide the memory fences.
1603 */
1604# error "memory fences not defined for your architecture, please report"
1605#endif
1606
1607#ifndef ECB_MEMORY_FENCE
1608# define ECB_MEMORY_FENCE do { } while (0)
1609# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1610# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1611#endif
1612
488#define inline_size static inline 1613#define inline_size ecb_inline
489 1614
490#if EV_FEATURE_CODE 1615#if EV_FEATURE_CODE
491# define inline_speed static inline 1616# define inline_speed ecb_inline
492#else 1617#else
493# define inline_speed static noinline 1618# define inline_speed ecb_noinline static
494#endif 1619#endif
1620
1621/*****************************************************************************/
1622/* raw syscall wrappers */
1623
1624#if EV_NEED_SYSCALL
1625
1626#include <sys/syscall.h>
1627
1628/*
1629 * define some syscall wrappers for common architectures
1630 * this is mostly for nice looks during debugging, not performance.
1631 * our syscalls return < 0, not == -1, on error. which is good
1632 * enough for linux aio.
1633 * TODO: arm is also common nowadays, maybe even mips and x86
1634 * TODO: after implementing this, it suddenly looks like overkill, but its hard to remove...
1635 */
1636#if __GNUC__ && __linux && ECB_AMD64 && !defined __OPTIMIZE_SIZE__
1637 /* the costly errno access probably kills this for size optimisation */
1638
1639 #define ev_syscall(nr,narg,arg1,arg2,arg3,arg4,arg5,arg6) \
1640 ({ \
1641 long res; \
1642 register unsigned long r6 __asm__ ("r9" ); \
1643 register unsigned long r5 __asm__ ("r8" ); \
1644 register unsigned long r4 __asm__ ("r10"); \
1645 register unsigned long r3 __asm__ ("rdx"); \
1646 register unsigned long r2 __asm__ ("rsi"); \
1647 register unsigned long r1 __asm__ ("rdi"); \
1648 if (narg >= 6) r6 = (unsigned long)(arg6); \
1649 if (narg >= 5) r5 = (unsigned long)(arg5); \
1650 if (narg >= 4) r4 = (unsigned long)(arg4); \
1651 if (narg >= 3) r3 = (unsigned long)(arg3); \
1652 if (narg >= 2) r2 = (unsigned long)(arg2); \
1653 if (narg >= 1) r1 = (unsigned long)(arg1); \
1654 __asm__ __volatile__ ( \
1655 "syscall\n\t" \
1656 : "=a" (res) \
1657 : "0" (nr), "r" (r1), "r" (r2), "r" (r3), "r" (r4), "r" (r5) \
1658 : "cc", "r11", "cx", "memory"); \
1659 errno = -res; \
1660 res; \
1661 })
1662
1663#endif
1664
1665#ifdef ev_syscall
1666 #define ev_syscall0(nr) ev_syscall (nr, 0, 0, 0, 0, 0, 0, 0)
1667 #define ev_syscall1(nr,arg1) ev_syscall (nr, 1, arg1, 0, 0, 0, 0, 0)
1668 #define ev_syscall2(nr,arg1,arg2) ev_syscall (nr, 2, arg1, arg2, 0, 0, 0, 0)
1669 #define ev_syscall3(nr,arg1,arg2,arg3) ev_syscall (nr, 3, arg1, arg2, arg3, 0, 0, 0)
1670 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) ev_syscall (nr, 3, arg1, arg2, arg3, arg4, 0, 0)
1671 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) ev_syscall (nr, 5, arg1, arg2, arg3, arg4, arg5, 0)
1672 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) ev_syscall (nr, 6, arg1, arg2, arg3, arg4, arg5,arg6)
1673#else
1674 #define ev_syscall0(nr) syscall (nr)
1675 #define ev_syscall1(nr,arg1) syscall (nr, arg1)
1676 #define ev_syscall2(nr,arg1,arg2) syscall (nr, arg1, arg2)
1677 #define ev_syscall3(nr,arg1,arg2,arg3) syscall (nr, arg1, arg2, arg3)
1678 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) syscall (nr, arg1, arg2, arg3, arg4)
1679 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) syscall (nr, arg1, arg2, arg3, arg4, arg5)
1680 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) syscall (nr, arg1, arg2, arg3, arg4, arg5,arg6)
1681#endif
1682
1683#endif
1684
1685/*****************************************************************************/
495 1686
496#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1687#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
497 1688
498#if EV_MINPRI == EV_MAXPRI 1689#if EV_MINPRI == EV_MAXPRI
499# define ABSPRI(w) (((W)w), 0) 1690# define ABSPRI(w) (((W)w), 0)
500#else 1691#else
501# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1692# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
502#endif 1693#endif
503 1694
504#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1695#define EMPTY /* required for microsofts broken pseudo-c compiler */
505#define EMPTY2(a,b) /* used to suppress some warnings */
506 1696
507typedef ev_watcher *W; 1697typedef ev_watcher *W;
508typedef ev_watcher_list *WL; 1698typedef ev_watcher_list *WL;
509typedef ev_watcher_time *WT; 1699typedef ev_watcher_time *WT;
510 1700
… …
535# include "ev_win32.c" 1725# include "ev_win32.c"
536#endif 1726#endif
537 1727
538/*****************************************************************************/ 1728/*****************************************************************************/
539 1729
1730#if EV_USE_LINUXAIO
1731# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
1732#endif
1733
1734/* define a suitable floor function (only used by periodics atm) */
1735
1736#if EV_USE_FLOOR
1737# include <math.h>
1738# define ev_floor(v) floor (v)
1739#else
1740
1741#include <float.h>
1742
1743/* a floor() replacement function, should be independent of ev_tstamp type */
1744ecb_noinline
1745static ev_tstamp
1746ev_floor (ev_tstamp v)
1747{
1748 /* the choice of shift factor is not terribly important */
1749#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1750 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1751#else
1752 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1753#endif
1754
1755 /* special treatment for negative arguments */
1756 if (ecb_expect_false (v < 0.))
1757 {
1758 ev_tstamp f = -ev_floor (-v);
1759
1760 return f - (f == v ? 0 : 1);
1761 }
1762
1763 /* argument too large for an unsigned long? then reduce it */
1764 if (ecb_expect_false (v >= shift))
1765 {
1766 ev_tstamp f;
1767
1768 if (v == v - 1.)
1769 return v; /* very large numbers are assumed to be integer */
1770
1771 f = shift * ev_floor (v * (1. / shift));
1772 return f + ev_floor (v - f);
1773 }
1774
1775 /* fits into an unsigned long */
1776 return (unsigned long)v;
1777}
1778
1779#endif
1780
1781/*****************************************************************************/
1782
1783#ifdef __linux
1784# include <sys/utsname.h>
1785#endif
1786
1787ecb_noinline ecb_cold
1788static unsigned int
1789ev_linux_version (void)
1790{
1791#ifdef __linux
1792 unsigned int v = 0;
1793 struct utsname buf;
1794 int i;
1795 char *p = buf.release;
1796
1797 if (uname (&buf))
1798 return 0;
1799
1800 for (i = 3+1; --i; )
1801 {
1802 unsigned int c = 0;
1803
1804 for (;;)
1805 {
1806 if (*p >= '0' && *p <= '9')
1807 c = c * 10 + *p++ - '0';
1808 else
1809 {
1810 p += *p == '.';
1811 break;
1812 }
1813 }
1814
1815 v = (v << 8) | c;
1816 }
1817
1818 return v;
1819#else
1820 return 0;
1821#endif
1822}
1823
1824/*****************************************************************************/
1825
540#if EV_AVOID_STDIO 1826#if EV_AVOID_STDIO
541static void noinline 1827ecb_noinline ecb_cold
1828static void
542ev_printerr (const char *msg) 1829ev_printerr (const char *msg)
543{ 1830{
544 write (STDERR_FILENO, msg, strlen (msg)); 1831 write (STDERR_FILENO, msg, strlen (msg));
545} 1832}
546#endif 1833#endif
547 1834
548static void (*syserr_cb)(const char *msg); 1835static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
549 1836
1837ecb_cold
550void 1838void
551ev_set_syserr_cb (void (*cb)(const char *msg)) 1839ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
552{ 1840{
553 syserr_cb = cb; 1841 syserr_cb = cb;
554} 1842}
555 1843
556static void noinline 1844ecb_noinline ecb_cold
1845static void
557ev_syserr (const char *msg) 1846ev_syserr (const char *msg)
558{ 1847{
559 if (!msg) 1848 if (!msg)
560 msg = "(libev) system error"; 1849 msg = "(libev) system error";
561 1850
562 if (syserr_cb) 1851 if (syserr_cb)
563 syserr_cb (msg); 1852 syserr_cb (msg);
564 else 1853 else
565 { 1854 {
566#if EV_AVOID_STDIO 1855#if EV_AVOID_STDIO
567 const char *err = strerror (errno);
568
569 ev_printerr (msg); 1856 ev_printerr (msg);
570 ev_printerr (": "); 1857 ev_printerr (": ");
571 ev_printerr (err); 1858 ev_printerr (strerror (errno));
572 ev_printerr ("\n"); 1859 ev_printerr ("\n");
573#else 1860#else
574 perror (msg); 1861 perror (msg);
575#endif 1862#endif
576 abort (); 1863 abort ();
577 } 1864 }
578} 1865}
579 1866
580static void * 1867static void *
581ev_realloc_emul (void *ptr, long size) 1868ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
582{ 1869{
583#if __GLIBC__
584 return realloc (ptr, size);
585#else
586 /* some systems, notably openbsd and darwin, fail to properly 1870 /* some systems, notably openbsd and darwin, fail to properly
587 * implement realloc (x, 0) (as required by both ansi c-89 and 1871 * implement realloc (x, 0) (as required by both ansi c-89 and
588 * the single unix specification, so work around them here. 1872 * the single unix specification, so work around them here.
1873 * recently, also (at least) fedora and debian started breaking it,
1874 * despite documenting it otherwise.
589 */ 1875 */
590 1876
591 if (size) 1877 if (size)
592 return realloc (ptr, size); 1878 return realloc (ptr, size);
593 1879
594 free (ptr); 1880 free (ptr);
595 return 0; 1881 return 0;
596#endif
597} 1882}
598 1883
599static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1884static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
600 1885
1886ecb_cold
601void 1887void
602ev_set_allocator (void *(*cb)(void *ptr, long size)) 1888ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
603{ 1889{
604 alloc = cb; 1890 alloc = cb;
605} 1891}
606 1892
607inline_speed void * 1893inline_speed void *
… …
610 ptr = alloc (ptr, size); 1896 ptr = alloc (ptr, size);
611 1897
612 if (!ptr && size) 1898 if (!ptr && size)
613 { 1899 {
614#if EV_AVOID_STDIO 1900#if EV_AVOID_STDIO
615 ev_printerr ("libev: memory allocation failed, aborting.\n"); 1901 ev_printerr ("(libev) memory allocation failed, aborting.\n");
616#else 1902#else
617 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1903 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
618#endif 1904#endif
619 abort (); 1905 abort ();
620 } 1906 }
621 1907
622 return ptr; 1908 return ptr;
… …
634typedef struct 1920typedef struct
635{ 1921{
636 WL head; 1922 WL head;
637 unsigned char events; /* the events watched for */ 1923 unsigned char events; /* the events watched for */
638 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */ 1924 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
639 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1925 unsigned char emask; /* some backends store the actual kernel mask in here */
640 unsigned char unused; 1926 unsigned char eflags; /* flags field for use by backends */
641#if EV_USE_EPOLL 1927#if EV_USE_EPOLL
642 unsigned int egen; /* generation counter to counter epoll bugs */ 1928 unsigned int egen; /* generation counter to counter epoll bugs */
643#endif 1929#endif
644#if EV_SELECT_IS_WINSOCKET 1930#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
645 SOCKET handle; 1931 SOCKET handle;
1932#endif
1933#if EV_USE_IOCP
1934 OVERLAPPED or, ow;
646#endif 1935#endif
647} ANFD; 1936} ANFD;
648 1937
649/* stores the pending event set for a given watcher */ 1938/* stores the pending event set for a given watcher */
650typedef struct 1939typedef struct
… …
692 #undef VAR 1981 #undef VAR
693 }; 1982 };
694 #include "ev_wrap.h" 1983 #include "ev_wrap.h"
695 1984
696 static struct ev_loop default_loop_struct; 1985 static struct ev_loop default_loop_struct;
697 struct ev_loop *ev_default_loop_ptr; 1986 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
698 1987
699#else 1988#else
700 1989
701 ev_tstamp ev_rt_now; 1990 EV_API_DECL ev_tstamp ev_rt_now = EV_TS_CONST (0.); /* needs to be initialised to make it a definition despite extern */
702 #define VAR(name,decl) static decl; 1991 #define VAR(name,decl) static decl;
703 #include "ev_vars.h" 1992 #include "ev_vars.h"
704 #undef VAR 1993 #undef VAR
705 1994
706 static int ev_default_loop_ptr; 1995 static int ev_default_loop_ptr;
707 1996
708#endif 1997#endif
709 1998
710#if EV_FEATURE_API 1999#if EV_FEATURE_API
711# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 2000# define EV_RELEASE_CB if (ecb_expect_false (release_cb)) release_cb (EV_A)
712# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 2001# define EV_ACQUIRE_CB if (ecb_expect_false (acquire_cb)) acquire_cb (EV_A)
713# define EV_INVOKE_PENDING invoke_cb (EV_A) 2002# define EV_INVOKE_PENDING invoke_cb (EV_A)
714#else 2003#else
715# define EV_RELEASE_CB (void)0 2004# define EV_RELEASE_CB (void)0
716# define EV_ACQUIRE_CB (void)0 2005# define EV_ACQUIRE_CB (void)0
717# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 2006# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
718#endif 2007#endif
719 2008
720#define EVUNLOOP_RECURSE 0x80 2009#define EVBREAK_RECURSE 0x80
721 2010
722/*****************************************************************************/ 2011/*****************************************************************************/
723 2012
724#ifndef EV_HAVE_EV_TIME 2013#ifndef EV_HAVE_EV_TIME
725ev_tstamp 2014ev_tstamp
726ev_time (void) 2015ev_time (void) EV_NOEXCEPT
727{ 2016{
728#if EV_USE_REALTIME 2017#if EV_USE_REALTIME
729 if (expect_true (have_realtime)) 2018 if (ecb_expect_true (have_realtime))
730 { 2019 {
731 struct timespec ts; 2020 struct timespec ts;
732 clock_gettime (CLOCK_REALTIME, &ts); 2021 clock_gettime (CLOCK_REALTIME, &ts);
733 return ts.tv_sec + ts.tv_nsec * 1e-9; 2022 return EV_TS_GET (ts);
734 } 2023 }
735#endif 2024#endif
736 2025
2026 {
737 struct timeval tv; 2027 struct timeval tv;
738 gettimeofday (&tv, 0); 2028 gettimeofday (&tv, 0);
739 return tv.tv_sec + tv.tv_usec * 1e-6; 2029 return EV_TV_GET (tv);
2030 }
740} 2031}
741#endif 2032#endif
742 2033
743inline_size ev_tstamp 2034inline_size ev_tstamp
744get_clock (void) 2035get_clock (void)
745{ 2036{
746#if EV_USE_MONOTONIC 2037#if EV_USE_MONOTONIC
747 if (expect_true (have_monotonic)) 2038 if (ecb_expect_true (have_monotonic))
748 { 2039 {
749 struct timespec ts; 2040 struct timespec ts;
750 clock_gettime (CLOCK_MONOTONIC, &ts); 2041 clock_gettime (CLOCK_MONOTONIC, &ts);
751 return ts.tv_sec + ts.tv_nsec * 1e-9; 2042 return EV_TS_GET (ts);
752 } 2043 }
753#endif 2044#endif
754 2045
755 return ev_time (); 2046 return ev_time ();
756} 2047}
757 2048
758#if EV_MULTIPLICITY 2049#if EV_MULTIPLICITY
759ev_tstamp 2050ev_tstamp
760ev_now (EV_P) 2051ev_now (EV_P) EV_NOEXCEPT
761{ 2052{
762 return ev_rt_now; 2053 return ev_rt_now;
763} 2054}
764#endif 2055#endif
765 2056
766void 2057void
767ev_sleep (ev_tstamp delay) 2058ev_sleep (ev_tstamp delay) EV_NOEXCEPT
768{ 2059{
769 if (delay > 0.) 2060 if (delay > EV_TS_CONST (0.))
770 { 2061 {
771#if EV_USE_NANOSLEEP 2062#if EV_USE_NANOSLEEP
772 struct timespec ts; 2063 struct timespec ts;
773 2064
774 ts.tv_sec = (time_t)delay; 2065 EV_TS_SET (ts, delay);
775 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
776
777 nanosleep (&ts, 0); 2066 nanosleep (&ts, 0);
778#elif defined(_WIN32) 2067#elif defined _WIN32
2068 /* maybe this should round up, as ms is very low resolution */
2069 /* compared to select (µs) or nanosleep (ns) */
779 Sleep ((unsigned long)(delay * 1e3)); 2070 Sleep ((unsigned long)(EV_TS_TO_MSEC (delay)));
780#else 2071#else
781 struct timeval tv; 2072 struct timeval tv;
782
783 tv.tv_sec = (time_t)delay;
784 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
785 2073
786 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 2074 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
787 /* something not guaranteed by newer posix versions, but guaranteed */ 2075 /* something not guaranteed by newer posix versions, but guaranteed */
788 /* by older ones */ 2076 /* by older ones */
2077 EV_TV_SET (tv, delay);
789 select (0, 0, 0, 0, &tv); 2078 select (0, 0, 0, 0, &tv);
790#endif 2079#endif
791 } 2080 }
792} 2081}
793 2082
… …
804 2093
805 do 2094 do
806 ncur <<= 1; 2095 ncur <<= 1;
807 while (cnt > ncur); 2096 while (cnt > ncur);
808 2097
809 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 2098 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
810 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 2099 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
811 { 2100 {
812 ncur *= elem; 2101 ncur *= elem;
813 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 2102 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
814 ncur = ncur - sizeof (void *) * 4; 2103 ncur = ncur - sizeof (void *) * 4;
… …
816 } 2105 }
817 2106
818 return ncur; 2107 return ncur;
819} 2108}
820 2109
821static noinline void * 2110ecb_noinline ecb_cold
2111static void *
822array_realloc (int elem, void *base, int *cur, int cnt) 2112array_realloc (int elem, void *base, int *cur, int cnt)
823{ 2113{
824 *cur = array_nextsize (elem, *cur, cnt); 2114 *cur = array_nextsize (elem, *cur, cnt);
825 return ev_realloc (base, elem * *cur); 2115 return ev_realloc (base, elem * *cur);
826} 2116}
827 2117
2118#define array_needsize_noinit(base,offset,count)
2119
828#define array_init_zero(base,count) \ 2120#define array_needsize_zerofill(base,offset,count) \
829 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 2121 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
830 2122
831#define array_needsize(type,base,cur,cnt,init) \ 2123#define array_needsize(type,base,cur,cnt,init) \
832 if (expect_false ((cnt) > (cur))) \ 2124 if (ecb_expect_false ((cnt) > (cur))) \
833 { \ 2125 { \
834 int ocur_ = (cur); \ 2126 ecb_unused int ocur_ = (cur); \
835 (base) = (type *)array_realloc \ 2127 (base) = (type *)array_realloc \
836 (sizeof (type), (base), &(cur), (cnt)); \ 2128 (sizeof (type), (base), &(cur), (cnt)); \
837 init ((base) + (ocur_), (cur) - ocur_); \ 2129 init ((base), ocur_, ((cur) - ocur_)); \
838 } 2130 }
839 2131
840#if 0 2132#if 0
841#define array_slim(type,stem) \ 2133#define array_slim(type,stem) \
842 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2134 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
… …
851 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 2143 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
852 2144
853/*****************************************************************************/ 2145/*****************************************************************************/
854 2146
855/* dummy callback for pending events */ 2147/* dummy callback for pending events */
856static void noinline 2148ecb_noinline
2149static void
857pendingcb (EV_P_ ev_prepare *w, int revents) 2150pendingcb (EV_P_ ev_prepare *w, int revents)
858{ 2151{
859} 2152}
860 2153
861void noinline 2154ecb_noinline
2155void
862ev_feed_event (EV_P_ void *w, int revents) 2156ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
863{ 2157{
864 W w_ = (W)w; 2158 W w_ = (W)w;
865 int pri = ABSPRI (w_); 2159 int pri = ABSPRI (w_);
866 2160
867 if (expect_false (w_->pending)) 2161 if (ecb_expect_false (w_->pending))
868 pendings [pri][w_->pending - 1].events |= revents; 2162 pendings [pri][w_->pending - 1].events |= revents;
869 else 2163 else
870 { 2164 {
871 w_->pending = ++pendingcnt [pri]; 2165 w_->pending = ++pendingcnt [pri];
872 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2166 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
873 pendings [pri][w_->pending - 1].w = w_; 2167 pendings [pri][w_->pending - 1].w = w_;
874 pendings [pri][w_->pending - 1].events = revents; 2168 pendings [pri][w_->pending - 1].events = revents;
875 } 2169 }
2170
2171 pendingpri = NUMPRI - 1;
876} 2172}
877 2173
878inline_speed void 2174inline_speed void
879feed_reverse (EV_P_ W w) 2175feed_reverse (EV_P_ W w)
880{ 2176{
881 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2177 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
882 rfeeds [rfeedcnt++] = w; 2178 rfeeds [rfeedcnt++] = w;
883} 2179}
884 2180
885inline_size void 2181inline_size void
886feed_reverse_done (EV_P_ int revents) 2182feed_reverse_done (EV_P_ int revents)
… …
921inline_speed void 2217inline_speed void
922fd_event (EV_P_ int fd, int revents) 2218fd_event (EV_P_ int fd, int revents)
923{ 2219{
924 ANFD *anfd = anfds + fd; 2220 ANFD *anfd = anfds + fd;
925 2221
926 if (expect_true (!anfd->reify)) 2222 if (ecb_expect_true (!anfd->reify))
927 fd_event_nocheck (EV_A_ fd, revents); 2223 fd_event_nocheck (EV_A_ fd, revents);
928} 2224}
929 2225
930void 2226void
931ev_feed_fd_event (EV_P_ int fd, int revents) 2227ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
932{ 2228{
933 if (fd >= 0 && fd < anfdmax) 2229 if (fd >= 0 && fd < anfdmax)
934 fd_event_nocheck (EV_A_ fd, revents); 2230 fd_event_nocheck (EV_A_ fd, revents);
935} 2231}
936 2232
… …
939inline_size void 2235inline_size void
940fd_reify (EV_P) 2236fd_reify (EV_P)
941{ 2237{
942 int i; 2238 int i;
943 2239
2240#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
2241 for (i = 0; i < fdchangecnt; ++i)
2242 {
2243 int fd = fdchanges [i];
2244 ANFD *anfd = anfds + fd;
2245
2246 if (anfd->reify & EV__IOFDSET && anfd->head)
2247 {
2248 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
2249
2250 if (handle != anfd->handle)
2251 {
2252 unsigned long arg;
2253
2254 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
2255
2256 /* handle changed, but fd didn't - we need to do it in two steps */
2257 backend_modify (EV_A_ fd, anfd->events, 0);
2258 anfd->events = 0;
2259 anfd->handle = handle;
2260 }
2261 }
2262 }
2263#endif
2264
944 for (i = 0; i < fdchangecnt; ++i) 2265 for (i = 0; i < fdchangecnt; ++i)
945 { 2266 {
946 int fd = fdchanges [i]; 2267 int fd = fdchanges [i];
947 ANFD *anfd = anfds + fd; 2268 ANFD *anfd = anfds + fd;
948 ev_io *w; 2269 ev_io *w;
949 2270
950 unsigned char events = 0; 2271 unsigned char o_events = anfd->events;
2272 unsigned char o_reify = anfd->reify;
951 2273
952 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2274 anfd->reify = 0;
953 events |= (unsigned char)w->events;
954 2275
955#if EV_SELECT_IS_WINSOCKET 2276 /*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
956 if (events)
957 { 2277 {
958 unsigned long arg; 2278 anfd->events = 0;
959 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 2279
960 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 2280 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
2281 anfd->events |= (unsigned char)w->events;
2282
2283 if (o_events != anfd->events)
2284 o_reify = EV__IOFDSET; /* actually |= */
961 } 2285 }
962#endif
963 2286
964 { 2287 if (o_reify & EV__IOFDSET)
965 unsigned char o_events = anfd->events;
966 unsigned char o_reify = anfd->reify;
967
968 anfd->reify = 0;
969 anfd->events = events;
970
971 if (o_events != events || o_reify & EV__IOFDSET)
972 backend_modify (EV_A_ fd, o_events, events); 2288 backend_modify (EV_A_ fd, o_events, anfd->events);
973 }
974 } 2289 }
975 2290
976 fdchangecnt = 0; 2291 fdchangecnt = 0;
977} 2292}
978 2293
979/* something about the given fd changed */ 2294/* something about the given fd changed */
980inline_size void 2295inline_size
2296void
981fd_change (EV_P_ int fd, int flags) 2297fd_change (EV_P_ int fd, int flags)
982{ 2298{
983 unsigned char reify = anfds [fd].reify; 2299 unsigned char reify = anfds [fd].reify;
984 anfds [fd].reify |= flags; 2300 anfds [fd].reify |= flags;
985 2301
986 if (expect_true (!reify)) 2302 if (ecb_expect_true (!reify))
987 { 2303 {
988 ++fdchangecnt; 2304 ++fdchangecnt;
989 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2305 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
990 fdchanges [fdchangecnt - 1] = fd; 2306 fdchanges [fdchangecnt - 1] = fd;
991 } 2307 }
992} 2308}
993 2309
994/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2310/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
995inline_speed void 2311inline_speed ecb_cold void
996fd_kill (EV_P_ int fd) 2312fd_kill (EV_P_ int fd)
997{ 2313{
998 ev_io *w; 2314 ev_io *w;
999 2315
1000 while ((w = (ev_io *)anfds [fd].head)) 2316 while ((w = (ev_io *)anfds [fd].head))
… …
1003 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2319 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1004 } 2320 }
1005} 2321}
1006 2322
1007/* check whether the given fd is actually valid, for error recovery */ 2323/* check whether the given fd is actually valid, for error recovery */
1008inline_size int 2324inline_size ecb_cold int
1009fd_valid (int fd) 2325fd_valid (int fd)
1010{ 2326{
1011#ifdef _WIN32 2327#ifdef _WIN32
1012 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2328 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1013#else 2329#else
1014 return fcntl (fd, F_GETFD) != -1; 2330 return fcntl (fd, F_GETFD) != -1;
1015#endif 2331#endif
1016} 2332}
1017 2333
1018/* called on EBADF to verify fds */ 2334/* called on EBADF to verify fds */
1019static void noinline 2335ecb_noinline ecb_cold
2336static void
1020fd_ebadf (EV_P) 2337fd_ebadf (EV_P)
1021{ 2338{
1022 int fd; 2339 int fd;
1023 2340
1024 for (fd = 0; fd < anfdmax; ++fd) 2341 for (fd = 0; fd < anfdmax; ++fd)
… …
1026 if (!fd_valid (fd) && errno == EBADF) 2343 if (!fd_valid (fd) && errno == EBADF)
1027 fd_kill (EV_A_ fd); 2344 fd_kill (EV_A_ fd);
1028} 2345}
1029 2346
1030/* called on ENOMEM in select/poll to kill some fds and retry */ 2347/* called on ENOMEM in select/poll to kill some fds and retry */
1031static void noinline 2348ecb_noinline ecb_cold
2349static void
1032fd_enomem (EV_P) 2350fd_enomem (EV_P)
1033{ 2351{
1034 int fd; 2352 int fd;
1035 2353
1036 for (fd = anfdmax; fd--; ) 2354 for (fd = anfdmax; fd--; )
… …
1040 break; 2358 break;
1041 } 2359 }
1042} 2360}
1043 2361
1044/* usually called after fork if backend needs to re-arm all fds from scratch */ 2362/* usually called after fork if backend needs to re-arm all fds from scratch */
1045static void noinline 2363ecb_noinline
2364static void
1046fd_rearm_all (EV_P) 2365fd_rearm_all (EV_P)
1047{ 2366{
1048 int fd; 2367 int fd;
1049 2368
1050 for (fd = 0; fd < anfdmax; ++fd) 2369 for (fd = 0; fd < anfdmax; ++fd)
… …
1103 ev_tstamp minat; 2422 ev_tstamp minat;
1104 ANHE *minpos; 2423 ANHE *minpos;
1105 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; 2424 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
1106 2425
1107 /* find minimum child */ 2426 /* find minimum child */
1108 if (expect_true (pos + DHEAP - 1 < E)) 2427 if (ecb_expect_true (pos + DHEAP - 1 < E))
1109 { 2428 {
1110 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2429 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1111 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2430 if ( minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1112 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2431 if ( minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1113 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2432 if ( minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1114 } 2433 }
1115 else if (pos < E) 2434 else if (pos < E)
1116 { 2435 {
1117 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2436 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1118 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2437 if (pos + 1 < E && minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1119 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2438 if (pos + 2 < E && minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1120 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2439 if (pos + 3 < E && minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1121 } 2440 }
1122 else 2441 else
1123 break; 2442 break;
1124 2443
1125 if (ANHE_at (he) <= minat) 2444 if (ANHE_at (he) <= minat)
… …
1133 2452
1134 heap [k] = he; 2453 heap [k] = he;
1135 ev_active (ANHE_w (he)) = k; 2454 ev_active (ANHE_w (he)) = k;
1136} 2455}
1137 2456
1138#else /* 4HEAP */ 2457#else /* not 4HEAP */
1139 2458
1140#define HEAP0 1 2459#define HEAP0 1
1141#define HPARENT(k) ((k) >> 1) 2460#define HPARENT(k) ((k) >> 1)
1142#define UPHEAP_DONE(p,k) (!(p)) 2461#define UPHEAP_DONE(p,k) (!(p))
1143 2462
… …
1231 2550
1232/*****************************************************************************/ 2551/*****************************************************************************/
1233 2552
1234#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2553#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1235 2554
1236static void noinline 2555ecb_noinline ecb_cold
2556static void
1237evpipe_init (EV_P) 2557evpipe_init (EV_P)
1238{ 2558{
1239 if (!ev_is_active (&pipe_w)) 2559 if (!ev_is_active (&pipe_w))
1240 { 2560 {
2561 int fds [2];
2562
1241# if EV_USE_EVENTFD 2563# if EV_USE_EVENTFD
2564 fds [0] = -1;
1242 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2565 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1243 if (evfd < 0 && errno == EINVAL) 2566 if (fds [1] < 0 && errno == EINVAL)
1244 evfd = eventfd (0, 0); 2567 fds [1] = eventfd (0, 0);
1245 2568
1246 if (evfd >= 0) 2569 if (fds [1] < 0)
2570# endif
1247 { 2571 {
2572 while (pipe (fds))
2573 ev_syserr ("(libev) error creating signal/async pipe");
2574
2575 fd_intern (fds [0]);
2576 }
2577
1248 evpipe [0] = -1; 2578 evpipe [0] = fds [0];
1249 fd_intern (evfd); /* doing it twice doesn't hurt */ 2579
1250 ev_io_set (&pipe_w, evfd, EV_READ); 2580 if (evpipe [1] < 0)
2581 evpipe [1] = fds [1]; /* first call, set write fd */
2582 else
2583 {
2584 /* on subsequent calls, do not change evpipe [1] */
2585 /* so that evpipe_write can always rely on its value. */
2586 /* this branch does not do anything sensible on windows, */
2587 /* so must not be executed on windows */
2588
2589 dup2 (fds [1], evpipe [1]);
2590 close (fds [1]);
2591 }
2592
2593 fd_intern (evpipe [1]);
2594
2595 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2596 ev_io_start (EV_A_ &pipe_w);
2597 ev_unref (EV_A); /* watcher should not keep loop alive */
2598 }
2599}
2600
2601inline_speed void
2602evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2603{
2604 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2605
2606 if (ecb_expect_true (*flag))
2607 return;
2608
2609 *flag = 1;
2610 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2611
2612 pipe_write_skipped = 1;
2613
2614 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2615
2616 if (pipe_write_wanted)
2617 {
2618 int old_errno;
2619
2620 pipe_write_skipped = 0;
2621 ECB_MEMORY_FENCE_RELEASE;
2622
2623 old_errno = errno; /* save errno because write will clobber it */
2624
2625#if EV_USE_EVENTFD
2626 if (evpipe [0] < 0)
2627 {
2628 uint64_t counter = 1;
2629 write (evpipe [1], &counter, sizeof (uint64_t));
1251 } 2630 }
1252 else 2631 else
1253# endif 2632#endif
1254 { 2633 {
1255 while (pipe (evpipe)) 2634#ifdef _WIN32
1256 ev_syserr ("(libev) error creating signal/async pipe"); 2635 WSABUF buf;
1257 2636 DWORD sent;
1258 fd_intern (evpipe [0]); 2637 buf.buf = (char *)&buf;
1259 fd_intern (evpipe [1]); 2638 buf.len = 1;
1260 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2639 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2640#else
2641 write (evpipe [1], &(evpipe [1]), 1);
2642#endif
1261 } 2643 }
1262
1263 ev_io_start (EV_A_ &pipe_w);
1264 ev_unref (EV_A); /* watcher should not keep loop alive */
1265 }
1266}
1267
1268inline_size void
1269evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1270{
1271 if (!*flag)
1272 {
1273 int old_errno = errno; /* save errno because write might clobber it */
1274 char dummy;
1275
1276 *flag = 1;
1277
1278#if EV_USE_EVENTFD
1279 if (evfd >= 0)
1280 {
1281 uint64_t counter = 1;
1282 write (evfd, &counter, sizeof (uint64_t));
1283 }
1284 else
1285#endif
1286 /* win32 people keep sending patches that change this write() to send() */
1287 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1288 /* so when you think this write should be a send instead, please find out */
1289 /* where your send() is from - it's definitely not the microsoft send, and */
1290 /* tell me. thank you. */
1291 write (evpipe [1], &dummy, 1);
1292 2644
1293 errno = old_errno; 2645 errno = old_errno;
1294 } 2646 }
1295} 2647}
1296 2648
… …
1299static void 2651static void
1300pipecb (EV_P_ ev_io *iow, int revents) 2652pipecb (EV_P_ ev_io *iow, int revents)
1301{ 2653{
1302 int i; 2654 int i;
1303 2655
2656 if (revents & EV_READ)
2657 {
1304#if EV_USE_EVENTFD 2658#if EV_USE_EVENTFD
1305 if (evfd >= 0) 2659 if (evpipe [0] < 0)
1306 { 2660 {
1307 uint64_t counter; 2661 uint64_t counter;
1308 read (evfd, &counter, sizeof (uint64_t)); 2662 read (evpipe [1], &counter, sizeof (uint64_t));
1309 } 2663 }
1310 else 2664 else
1311#endif 2665#endif
1312 { 2666 {
1313 char dummy; 2667 char dummy[4];
1314 /* see discussion in evpipe_write when you think this read should be recv in win32 */ 2668#ifdef _WIN32
2669 WSABUF buf;
2670 DWORD recvd;
2671 DWORD flags = 0;
2672 buf.buf = dummy;
2673 buf.len = sizeof (dummy);
2674 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2675#else
1315 read (evpipe [0], &dummy, 1); 2676 read (evpipe [0], &dummy, sizeof (dummy));
2677#endif
2678 }
1316 } 2679 }
1317 2680
2681 pipe_write_skipped = 0;
2682
2683 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2684
2685#if EV_SIGNAL_ENABLE
1318 if (sig_pending) 2686 if (sig_pending)
1319 { 2687 {
1320 sig_pending = 0; 2688 sig_pending = 0;
1321 2689
2690 ECB_MEMORY_FENCE;
2691
1322 for (i = EV_NSIG - 1; i--; ) 2692 for (i = EV_NSIG - 1; i--; )
1323 if (expect_false (signals [i].pending)) 2693 if (ecb_expect_false (signals [i].pending))
1324 ev_feed_signal_event (EV_A_ i + 1); 2694 ev_feed_signal_event (EV_A_ i + 1);
1325 } 2695 }
2696#endif
1326 2697
1327#if EV_ASYNC_ENABLE 2698#if EV_ASYNC_ENABLE
1328 if (async_pending) 2699 if (async_pending)
1329 { 2700 {
1330 async_pending = 0; 2701 async_pending = 0;
2702
2703 ECB_MEMORY_FENCE;
1331 2704
1332 for (i = asynccnt; i--; ) 2705 for (i = asynccnt; i--; )
1333 if (asyncs [i]->sent) 2706 if (asyncs [i]->sent)
1334 { 2707 {
1335 asyncs [i]->sent = 0; 2708 asyncs [i]->sent = 0;
2709 ECB_MEMORY_FENCE_RELEASE;
1336 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2710 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1337 } 2711 }
1338 } 2712 }
1339#endif 2713#endif
1340} 2714}
1341 2715
1342/*****************************************************************************/ 2716/*****************************************************************************/
1343 2717
2718void
2719ev_feed_signal (int signum) EV_NOEXCEPT
2720{
2721#if EV_MULTIPLICITY
2722 EV_P;
2723 ECB_MEMORY_FENCE_ACQUIRE;
2724 EV_A = signals [signum - 1].loop;
2725
2726 if (!EV_A)
2727 return;
2728#endif
2729
2730 signals [signum - 1].pending = 1;
2731 evpipe_write (EV_A_ &sig_pending);
2732}
2733
1344static void 2734static void
1345ev_sighandler (int signum) 2735ev_sighandler (int signum)
1346{ 2736{
1347#if EV_MULTIPLICITY
1348 EV_P = signals [signum - 1].loop;
1349#endif
1350
1351#ifdef _WIN32 2737#ifdef _WIN32
1352 signal (signum, ev_sighandler); 2738 signal (signum, ev_sighandler);
1353#endif 2739#endif
1354 2740
1355 signals [signum - 1].pending = 1; 2741 ev_feed_signal (signum);
1356 evpipe_write (EV_A_ &sig_pending);
1357} 2742}
1358 2743
1359void noinline 2744ecb_noinline
2745void
1360ev_feed_signal_event (EV_P_ int signum) 2746ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
1361{ 2747{
1362 WL w; 2748 WL w;
1363 2749
1364 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2750 if (ecb_expect_false (signum <= 0 || signum >= EV_NSIG))
1365 return; 2751 return;
1366 2752
1367 --signum; 2753 --signum;
1368 2754
1369#if EV_MULTIPLICITY 2755#if EV_MULTIPLICITY
1370 /* it is permissible to try to feed a signal to the wrong loop */ 2756 /* it is permissible to try to feed a signal to the wrong loop */
1371 /* or, likely more useful, feeding a signal nobody is waiting for */ 2757 /* or, likely more useful, feeding a signal nobody is waiting for */
1372 2758
1373 if (expect_false (signals [signum].loop != EV_A)) 2759 if (ecb_expect_false (signals [signum].loop != EV_A))
1374 return; 2760 return;
1375#endif 2761#endif
1376 2762
1377 signals [signum].pending = 0; 2763 signals [signum].pending = 0;
2764 ECB_MEMORY_FENCE_RELEASE;
1378 2765
1379 for (w = signals [signum].head; w; w = w->next) 2766 for (w = signals [signum].head; w; w = w->next)
1380 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2767 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1381} 2768}
1382 2769
… …
1461 2848
1462#endif 2849#endif
1463 2850
1464/*****************************************************************************/ 2851/*****************************************************************************/
1465 2852
2853#if EV_USE_IOCP
2854# include "ev_iocp.c"
2855#endif
1466#if EV_USE_PORT 2856#if EV_USE_PORT
1467# include "ev_port.c" 2857# include "ev_port.c"
1468#endif 2858#endif
1469#if EV_USE_KQUEUE 2859#if EV_USE_KQUEUE
1470# include "ev_kqueue.c" 2860# include "ev_kqueue.c"
1471#endif 2861#endif
1472#if EV_USE_EPOLL 2862#if EV_USE_EPOLL
1473# include "ev_epoll.c" 2863# include "ev_epoll.c"
1474#endif 2864#endif
2865#if EV_USE_LINUXAIO
2866# include "ev_linuxaio.c"
2867#endif
2868#if EV_USE_IOURING
2869# include "ev_iouring.c"
2870#endif
1475#if EV_USE_POLL 2871#if EV_USE_POLL
1476# include "ev_poll.c" 2872# include "ev_poll.c"
1477#endif 2873#endif
1478#if EV_USE_SELECT 2874#if EV_USE_SELECT
1479# include "ev_select.c" 2875# include "ev_select.c"
1480#endif 2876#endif
1481 2877
1482int 2878ecb_cold int
1483ev_version_major (void) 2879ev_version_major (void) EV_NOEXCEPT
1484{ 2880{
1485 return EV_VERSION_MAJOR; 2881 return EV_VERSION_MAJOR;
1486} 2882}
1487 2883
1488int 2884ecb_cold int
1489ev_version_minor (void) 2885ev_version_minor (void) EV_NOEXCEPT
1490{ 2886{
1491 return EV_VERSION_MINOR; 2887 return EV_VERSION_MINOR;
1492} 2888}
1493 2889
1494/* return true if we are running with elevated privileges and should ignore env variables */ 2890/* return true if we are running with elevated privileges and should ignore env variables */
1495int inline_size 2891inline_size ecb_cold int
1496enable_secure (void) 2892enable_secure (void)
1497{ 2893{
1498#ifdef _WIN32 2894#ifdef _WIN32
1499 return 0; 2895 return 0;
1500#else 2896#else
1501 return getuid () != geteuid () 2897 return getuid () != geteuid ()
1502 || getgid () != getegid (); 2898 || getgid () != getegid ();
1503#endif 2899#endif
1504} 2900}
1505 2901
2902ecb_cold
1506unsigned int 2903unsigned int
1507ev_supported_backends (void) 2904ev_supported_backends (void) EV_NOEXCEPT
1508{ 2905{
1509 unsigned int flags = 0; 2906 unsigned int flags = 0;
1510 2907
1511 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2908 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1512 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2909 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
1513 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 2910 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2911 if (EV_USE_LINUXAIO) flags |= EVBACKEND_LINUXAIO;
2912 if (EV_USE_IOURING ) flags |= EVBACKEND_IOURING;
1514 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 2913 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
1515 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2914 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
1516 2915
1517 return flags; 2916 return flags;
1518} 2917}
1519 2918
2919ecb_cold
1520unsigned int 2920unsigned int
1521ev_recommended_backends (void) 2921ev_recommended_backends (void) EV_NOEXCEPT
1522{ 2922{
1523 unsigned int flags = ev_supported_backends (); 2923 unsigned int flags = ev_supported_backends ();
1524 2924
1525#ifndef __NetBSD__ 2925#ifndef __NetBSD__
1526 /* kqueue is borked on everything but netbsd apparently */ 2926 /* kqueue is borked on everything but netbsd apparently */
… …
1534#endif 2934#endif
1535#ifdef __FreeBSD__ 2935#ifdef __FreeBSD__
1536 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */ 2936 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1537#endif 2937#endif
1538 2938
2939 /* TODO: linuxaio is very experimental */
2940#if !EV_RECOMMEND_LINUXAIO
2941 flags &= ~EVBACKEND_LINUXAIO;
2942#endif
2943 /* TODO: linuxaio is super experimental */
2944#if !EV_RECOMMEND_IOURING
2945 flags &= ~EVBACKEND_IOURING;
2946#endif
2947
1539 return flags; 2948 return flags;
1540} 2949}
1541 2950
2951ecb_cold
1542unsigned int 2952unsigned int
1543ev_embeddable_backends (void) 2953ev_embeddable_backends (void) EV_NOEXCEPT
1544{ 2954{
1545 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2955 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1546 2956
1547 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2957 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1548 /* please fix it and tell me how to detect the fix */ 2958 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1549 flags &= ~EVBACKEND_EPOLL; 2959 flags &= ~EVBACKEND_EPOLL;
2960
2961 /* EVBACKEND_LINUXAIO is theoretically embeddable, but suffers from a performance overhead */
2962
2963 /* EVBACKEND_IOURING is practically embeddable, but the current implementation is not
2964 * because our backend_fd is the epoll fd we need as fallback.
2965 * if the kernel ever is fixed, this might change...
2966 */
1550 2967
1551 return flags; 2968 return flags;
1552} 2969}
1553 2970
1554unsigned int 2971unsigned int
1555ev_backend (EV_P) 2972ev_backend (EV_P) EV_NOEXCEPT
1556{ 2973{
1557 return backend; 2974 return backend;
1558} 2975}
1559 2976
1560#if EV_FEATURE_API 2977#if EV_FEATURE_API
1561unsigned int 2978unsigned int
1562ev_iteration (EV_P) 2979ev_iteration (EV_P) EV_NOEXCEPT
1563{ 2980{
1564 return loop_count; 2981 return loop_count;
1565} 2982}
1566 2983
1567unsigned int 2984unsigned int
1568ev_depth (EV_P) 2985ev_depth (EV_P) EV_NOEXCEPT
1569{ 2986{
1570 return loop_depth; 2987 return loop_depth;
1571} 2988}
1572 2989
1573void 2990void
1574ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2991ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1575{ 2992{
1576 io_blocktime = interval; 2993 io_blocktime = interval;
1577} 2994}
1578 2995
1579void 2996void
1580ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2997ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1581{ 2998{
1582 timeout_blocktime = interval; 2999 timeout_blocktime = interval;
1583} 3000}
1584 3001
1585void 3002void
1586ev_set_userdata (EV_P_ void *data) 3003ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
1587{ 3004{
1588 userdata = data; 3005 userdata = data;
1589} 3006}
1590 3007
1591void * 3008void *
1592ev_userdata (EV_P) 3009ev_userdata (EV_P) EV_NOEXCEPT
1593{ 3010{
1594 return userdata; 3011 return userdata;
1595} 3012}
1596 3013
3014void
1597void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 3015ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
1598{ 3016{
1599 invoke_cb = invoke_pending_cb; 3017 invoke_cb = invoke_pending_cb;
1600} 3018}
1601 3019
3020void
1602void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 3021ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
1603{ 3022{
1604 release_cb = release; 3023 release_cb = release;
1605 acquire_cb = acquire; 3024 acquire_cb = acquire;
1606} 3025}
1607#endif 3026#endif
1608 3027
1609/* initialise a loop structure, must be zero-initialised */ 3028/* initialise a loop structure, must be zero-initialised */
1610static void noinline 3029ecb_noinline ecb_cold
3030static void
1611loop_init (EV_P_ unsigned int flags) 3031loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
1612{ 3032{
1613 if (!backend) 3033 if (!backend)
1614 { 3034 {
3035 origflags = flags;
3036
1615#if EV_USE_REALTIME 3037#if EV_USE_REALTIME
1616 if (!have_realtime) 3038 if (!have_realtime)
1617 { 3039 {
1618 struct timespec ts; 3040 struct timespec ts;
1619 3041
… …
1641 if (!(flags & EVFLAG_NOENV) 3063 if (!(flags & EVFLAG_NOENV)
1642 && !enable_secure () 3064 && !enable_secure ()
1643 && getenv ("LIBEV_FLAGS")) 3065 && getenv ("LIBEV_FLAGS"))
1644 flags = atoi (getenv ("LIBEV_FLAGS")); 3066 flags = atoi (getenv ("LIBEV_FLAGS"));
1645 3067
1646 ev_rt_now = ev_time (); 3068 ev_rt_now = ev_time ();
1647 mn_now = get_clock (); 3069 mn_now = get_clock ();
1648 now_floor = mn_now; 3070 now_floor = mn_now;
1649 rtmn_diff = ev_rt_now - mn_now; 3071 rtmn_diff = ev_rt_now - mn_now;
1650#if EV_FEATURE_API 3072#if EV_FEATURE_API
1651 invoke_cb = ev_invoke_pending; 3073 invoke_cb = ev_invoke_pending;
1652#endif 3074#endif
1653 3075
1654 io_blocktime = 0.; 3076 io_blocktime = 0.;
1655 timeout_blocktime = 0.; 3077 timeout_blocktime = 0.;
1656 backend = 0; 3078 backend = 0;
1657 backend_fd = -1; 3079 backend_fd = -1;
1658 sig_pending = 0; 3080 sig_pending = 0;
1659#if EV_ASYNC_ENABLE 3081#if EV_ASYNC_ENABLE
1660 async_pending = 0; 3082 async_pending = 0;
1661#endif 3083#endif
3084 pipe_write_skipped = 0;
3085 pipe_write_wanted = 0;
3086 evpipe [0] = -1;
3087 evpipe [1] = -1;
1662#if EV_USE_INOTIFY 3088#if EV_USE_INOTIFY
1663 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 3089 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1664#endif 3090#endif
1665#if EV_USE_SIGNALFD 3091#if EV_USE_SIGNALFD
1666 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 3092 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1667#endif 3093#endif
1668 3094
1669 if (!(flags & 0x0000ffffU)) 3095 if (!(flags & EVBACKEND_MASK))
1670 flags |= ev_recommended_backends (); 3096 flags |= ev_recommended_backends ();
1671 3097
3098#if EV_USE_IOCP
3099 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
3100#endif
1672#if EV_USE_PORT 3101#if EV_USE_PORT
1673 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 3102 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1674#endif 3103#endif
1675#if EV_USE_KQUEUE 3104#if EV_USE_KQUEUE
1676 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 3105 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
3106#endif
3107#if EV_USE_IOURING
3108 if (!backend && (flags & EVBACKEND_IOURING )) backend = iouring_init (EV_A_ flags);
3109#endif
3110#if EV_USE_LINUXAIO
3111 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
1677#endif 3112#endif
1678#if EV_USE_EPOLL 3113#if EV_USE_EPOLL
1679 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 3114 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
1680#endif 3115#endif
1681#if EV_USE_POLL 3116#if EV_USE_POLL
1682 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 3117 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
1683#endif 3118#endif
1684#if EV_USE_SELECT 3119#if EV_USE_SELECT
1685 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 3120 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
1686#endif 3121#endif
1687 3122
1688 ev_prepare_init (&pending_w, pendingcb); 3123 ev_prepare_init (&pending_w, pendingcb);
1689 3124
1690#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 3125#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
… …
1693#endif 3128#endif
1694 } 3129 }
1695} 3130}
1696 3131
1697/* free up a loop structure */ 3132/* free up a loop structure */
1698static void noinline 3133ecb_cold
3134void
1699loop_destroy (EV_P) 3135ev_loop_destroy (EV_P)
1700{ 3136{
1701 int i; 3137 int i;
3138
3139#if EV_MULTIPLICITY
3140 /* mimic free (0) */
3141 if (!EV_A)
3142 return;
3143#endif
3144
3145#if EV_CLEANUP_ENABLE
3146 /* queue cleanup watchers (and execute them) */
3147 if (ecb_expect_false (cleanupcnt))
3148 {
3149 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
3150 EV_INVOKE_PENDING;
3151 }
3152#endif
3153
3154#if EV_CHILD_ENABLE
3155 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
3156 {
3157 ev_ref (EV_A); /* child watcher */
3158 ev_signal_stop (EV_A_ &childev);
3159 }
3160#endif
1702 3161
1703 if (ev_is_active (&pipe_w)) 3162 if (ev_is_active (&pipe_w))
1704 { 3163 {
1705 /*ev_ref (EV_A);*/ 3164 /*ev_ref (EV_A);*/
1706 /*ev_io_stop (EV_A_ &pipe_w);*/ 3165 /*ev_io_stop (EV_A_ &pipe_w);*/
1707 3166
1708#if EV_USE_EVENTFD
1709 if (evfd >= 0)
1710 close (evfd);
1711#endif
1712
1713 if (evpipe [0] >= 0)
1714 {
1715 EV_WIN32_CLOSE_FD (evpipe [0]); 3167 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1716 EV_WIN32_CLOSE_FD (evpipe [1]); 3168 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1717 }
1718 } 3169 }
1719 3170
1720#if EV_USE_SIGNALFD 3171#if EV_USE_SIGNALFD
1721 if (ev_is_active (&sigfd_w)) 3172 if (ev_is_active (&sigfd_w))
1722 close (sigfd); 3173 close (sigfd);
… …
1728#endif 3179#endif
1729 3180
1730 if (backend_fd >= 0) 3181 if (backend_fd >= 0)
1731 close (backend_fd); 3182 close (backend_fd);
1732 3183
3184#if EV_USE_IOCP
3185 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
3186#endif
1733#if EV_USE_PORT 3187#if EV_USE_PORT
1734 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3188 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1735#endif 3189#endif
1736#if EV_USE_KQUEUE 3190#if EV_USE_KQUEUE
1737 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3191 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
3192#endif
3193#if EV_USE_IOURING
3194 if (backend == EVBACKEND_IOURING ) iouring_destroy (EV_A);
3195#endif
3196#if EV_USE_LINUXAIO
3197 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
1738#endif 3198#endif
1739#if EV_USE_EPOLL 3199#if EV_USE_EPOLL
1740 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3200 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
1741#endif 3201#endif
1742#if EV_USE_POLL 3202#if EV_USE_POLL
1743 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3203 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
1744#endif 3204#endif
1745#if EV_USE_SELECT 3205#if EV_USE_SELECT
1746 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3206 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
1747#endif 3207#endif
1748 3208
1749 for (i = NUMPRI; i--; ) 3209 for (i = NUMPRI; i--; )
1750 { 3210 {
1751 array_free (pending, [i]); 3211 array_free (pending, [i]);
… …
1764 array_free (periodic, EMPTY); 3224 array_free (periodic, EMPTY);
1765#endif 3225#endif
1766#if EV_FORK_ENABLE 3226#if EV_FORK_ENABLE
1767 array_free (fork, EMPTY); 3227 array_free (fork, EMPTY);
1768#endif 3228#endif
3229#if EV_CLEANUP_ENABLE
3230 array_free (cleanup, EMPTY);
3231#endif
1769 array_free (prepare, EMPTY); 3232 array_free (prepare, EMPTY);
1770 array_free (check, EMPTY); 3233 array_free (check, EMPTY);
1771#if EV_ASYNC_ENABLE 3234#if EV_ASYNC_ENABLE
1772 array_free (async, EMPTY); 3235 array_free (async, EMPTY);
1773#endif 3236#endif
1774 3237
1775 backend = 0; 3238 backend = 0;
3239
3240#if EV_MULTIPLICITY
3241 if (ev_is_default_loop (EV_A))
3242#endif
3243 ev_default_loop_ptr = 0;
3244#if EV_MULTIPLICITY
3245 else
3246 ev_free (EV_A);
3247#endif
1776} 3248}
1777 3249
1778#if EV_USE_INOTIFY 3250#if EV_USE_INOTIFY
1779inline_size void infy_fork (EV_P); 3251inline_size void infy_fork (EV_P);
1780#endif 3252#endif
1781 3253
1782inline_size void 3254inline_size void
1783loop_fork (EV_P) 3255loop_fork (EV_P)
1784{ 3256{
1785#if EV_USE_PORT 3257#if EV_USE_PORT
1786 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3258 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1787#endif 3259#endif
1788#if EV_USE_KQUEUE 3260#if EV_USE_KQUEUE
1789 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 3261 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
3262#endif
3263#if EV_USE_IOURING
3264 if (backend == EVBACKEND_IOURING ) iouring_fork (EV_A);
3265#endif
3266#if EV_USE_LINUXAIO
3267 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
1790#endif 3268#endif
1791#if EV_USE_EPOLL 3269#if EV_USE_EPOLL
1792 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3270 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
1793#endif 3271#endif
1794#if EV_USE_INOTIFY 3272#if EV_USE_INOTIFY
1795 infy_fork (EV_A); 3273 infy_fork (EV_A);
1796#endif 3274#endif
1797 3275
3276#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1798 if (ev_is_active (&pipe_w)) 3277 if (ev_is_active (&pipe_w) && postfork != 2)
1799 { 3278 {
1800 /* this "locks" the handlers against writing to the pipe */ 3279 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1801 /* while we modify the fd vars */
1802 sig_pending = 1;
1803#if EV_ASYNC_ENABLE
1804 async_pending = 1;
1805#endif
1806 3280
1807 ev_ref (EV_A); 3281 ev_ref (EV_A);
1808 ev_io_stop (EV_A_ &pipe_w); 3282 ev_io_stop (EV_A_ &pipe_w);
1809 3283
1810#if EV_USE_EVENTFD
1811 if (evfd >= 0)
1812 close (evfd);
1813#endif
1814
1815 if (evpipe [0] >= 0) 3284 if (evpipe [0] >= 0)
1816 {
1817 EV_WIN32_CLOSE_FD (evpipe [0]); 3285 EV_WIN32_CLOSE_FD (evpipe [0]);
1818 EV_WIN32_CLOSE_FD (evpipe [1]);
1819 }
1820 3286
1821#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1822 evpipe_init (EV_A); 3287 evpipe_init (EV_A);
1823 /* now iterate over everything, in case we missed something */ 3288 /* iterate over everything, in case we missed something before */
1824 pipecb (EV_A_ &pipe_w, EV_READ); 3289 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1825#endif
1826 } 3290 }
3291#endif
1827 3292
1828 postfork = 0; 3293 postfork = 0;
1829} 3294}
1830 3295
1831#if EV_MULTIPLICITY 3296#if EV_MULTIPLICITY
1832 3297
3298ecb_cold
1833struct ev_loop * 3299struct ev_loop *
1834ev_loop_new (unsigned int flags) 3300ev_loop_new (unsigned int flags) EV_NOEXCEPT
1835{ 3301{
1836 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3302 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1837 3303
1838 memset (EV_A, 0, sizeof (struct ev_loop)); 3304 memset (EV_A, 0, sizeof (struct ev_loop));
1839 loop_init (EV_A_ flags); 3305 loop_init (EV_A_ flags);
1840 3306
1841 if (ev_backend (EV_A)) 3307 if (ev_backend (EV_A))
1842 return EV_A; 3308 return EV_A;
1843 3309
3310 ev_free (EV_A);
1844 return 0; 3311 return 0;
1845} 3312}
1846 3313
1847void
1848ev_loop_destroy (EV_P)
1849{
1850 loop_destroy (EV_A);
1851 ev_free (loop);
1852}
1853
1854void
1855ev_loop_fork (EV_P)
1856{
1857 postfork = 1; /* must be in line with ev_default_fork */
1858}
1859#endif /* multiplicity */ 3314#endif /* multiplicity */
1860 3315
1861#if EV_VERIFY 3316#if EV_VERIFY
1862static void noinline 3317ecb_noinline ecb_cold
3318static void
1863verify_watcher (EV_P_ W w) 3319verify_watcher (EV_P_ W w)
1864{ 3320{
1865 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3321 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1866 3322
1867 if (w->pending) 3323 if (w->pending)
1868 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3324 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1869} 3325}
1870 3326
1871static void noinline 3327ecb_noinline ecb_cold
3328static void
1872verify_heap (EV_P_ ANHE *heap, int N) 3329verify_heap (EV_P_ ANHE *heap, int N)
1873{ 3330{
1874 int i; 3331 int i;
1875 3332
1876 for (i = HEAP0; i < N + HEAP0; ++i) 3333 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1881 3338
1882 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3339 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1883 } 3340 }
1884} 3341}
1885 3342
1886static void noinline 3343ecb_noinline ecb_cold
3344static void
1887array_verify (EV_P_ W *ws, int cnt) 3345array_verify (EV_P_ W *ws, int cnt)
1888{ 3346{
1889 while (cnt--) 3347 while (cnt--)
1890 { 3348 {
1891 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3349 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
1893 } 3351 }
1894} 3352}
1895#endif 3353#endif
1896 3354
1897#if EV_FEATURE_API 3355#if EV_FEATURE_API
1898void 3356void ecb_cold
1899ev_verify (EV_P) 3357ev_verify (EV_P) EV_NOEXCEPT
1900{ 3358{
1901#if EV_VERIFY 3359#if EV_VERIFY
1902 int i; 3360 int i;
1903 WL w; 3361 WL w, w2;
1904 3362
1905 assert (activecnt >= -1); 3363 assert (activecnt >= -1);
1906 3364
1907 assert (fdchangemax >= fdchangecnt); 3365 assert (fdchangemax >= fdchangecnt);
1908 for (i = 0; i < fdchangecnt; ++i) 3366 for (i = 0; i < fdchangecnt; ++i)
1909 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3367 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1910 3368
1911 assert (anfdmax >= 0); 3369 assert (anfdmax >= 0);
1912 for (i = 0; i < anfdmax; ++i) 3370 for (i = 0; i < anfdmax; ++i)
3371 {
3372 int j = 0;
3373
1913 for (w = anfds [i].head; w; w = w->next) 3374 for (w = w2 = anfds [i].head; w; w = w->next)
1914 { 3375 {
1915 verify_watcher (EV_A_ (W)w); 3376 verify_watcher (EV_A_ (W)w);
3377
3378 if (j++ & 1)
3379 {
3380 assert (("libev: io watcher list contains a loop", w != w2));
3381 w2 = w2->next;
3382 }
3383
1916 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3384 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1917 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 3385 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1918 } 3386 }
3387 }
1919 3388
1920 assert (timermax >= timercnt); 3389 assert (timermax >= timercnt);
1921 verify_heap (EV_A_ timers, timercnt); 3390 verify_heap (EV_A_ timers, timercnt);
1922 3391
1923#if EV_PERIODIC_ENABLE 3392#if EV_PERIODIC_ENABLE
… …
1938#if EV_FORK_ENABLE 3407#if EV_FORK_ENABLE
1939 assert (forkmax >= forkcnt); 3408 assert (forkmax >= forkcnt);
1940 array_verify (EV_A_ (W *)forks, forkcnt); 3409 array_verify (EV_A_ (W *)forks, forkcnt);
1941#endif 3410#endif
1942 3411
3412#if EV_CLEANUP_ENABLE
3413 assert (cleanupmax >= cleanupcnt);
3414 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
3415#endif
3416
1943#if EV_ASYNC_ENABLE 3417#if EV_ASYNC_ENABLE
1944 assert (asyncmax >= asynccnt); 3418 assert (asyncmax >= asynccnt);
1945 array_verify (EV_A_ (W *)asyncs, asynccnt); 3419 array_verify (EV_A_ (W *)asyncs, asynccnt);
1946#endif 3420#endif
1947 3421
… …
1964#endif 3438#endif
1965} 3439}
1966#endif 3440#endif
1967 3441
1968#if EV_MULTIPLICITY 3442#if EV_MULTIPLICITY
3443ecb_cold
1969struct ev_loop * 3444struct ev_loop *
1970ev_default_loop_init (unsigned int flags)
1971#else 3445#else
1972int 3446int
3447#endif
1973ev_default_loop (unsigned int flags) 3448ev_default_loop (unsigned int flags) EV_NOEXCEPT
1974#endif
1975{ 3449{
1976 if (!ev_default_loop_ptr) 3450 if (!ev_default_loop_ptr)
1977 { 3451 {
1978#if EV_MULTIPLICITY 3452#if EV_MULTIPLICITY
1979 EV_P = ev_default_loop_ptr = &default_loop_struct; 3453 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1998 3472
1999 return ev_default_loop_ptr; 3473 return ev_default_loop_ptr;
2000} 3474}
2001 3475
2002void 3476void
2003ev_default_destroy (void) 3477ev_loop_fork (EV_P) EV_NOEXCEPT
2004{ 3478{
2005#if EV_MULTIPLICITY 3479 postfork = 1;
2006 EV_P = ev_default_loop_ptr;
2007#endif
2008
2009 ev_default_loop_ptr = 0;
2010
2011#if EV_CHILD_ENABLE
2012 ev_ref (EV_A); /* child watcher */
2013 ev_signal_stop (EV_A_ &childev);
2014#endif
2015
2016 loop_destroy (EV_A);
2017}
2018
2019void
2020ev_default_fork (void)
2021{
2022#if EV_MULTIPLICITY
2023 EV_P = ev_default_loop_ptr;
2024#endif
2025
2026 postfork = 1; /* must be in line with ev_loop_fork */
2027} 3480}
2028 3481
2029/*****************************************************************************/ 3482/*****************************************************************************/
2030 3483
2031void 3484void
… …
2033{ 3486{
2034 EV_CB_INVOKE ((W)w, revents); 3487 EV_CB_INVOKE ((W)w, revents);
2035} 3488}
2036 3489
2037unsigned int 3490unsigned int
2038ev_pending_count (EV_P) 3491ev_pending_count (EV_P) EV_NOEXCEPT
2039{ 3492{
2040 int pri; 3493 int pri;
2041 unsigned int count = 0; 3494 unsigned int count = 0;
2042 3495
2043 for (pri = NUMPRI; pri--; ) 3496 for (pri = NUMPRI; pri--; )
2044 count += pendingcnt [pri]; 3497 count += pendingcnt [pri];
2045 3498
2046 return count; 3499 return count;
2047} 3500}
2048 3501
2049void noinline 3502ecb_noinline
3503void
2050ev_invoke_pending (EV_P) 3504ev_invoke_pending (EV_P)
2051{ 3505{
2052 int pri; 3506 pendingpri = NUMPRI;
2053 3507
2054 for (pri = NUMPRI; pri--; ) 3508 do
3509 {
3510 --pendingpri;
3511
3512 /* pendingpri possibly gets modified in the inner loop */
2055 while (pendingcnt [pri]) 3513 while (pendingcnt [pendingpri])
2056 { 3514 {
2057 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3515 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2058 3516
2059 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2060 /* ^ this is no longer true, as pending_w could be here */
2061
2062 p->w->pending = 0; 3517 p->w->pending = 0;
2063 EV_CB_INVOKE (p->w, p->events); 3518 EV_CB_INVOKE (p->w, p->events);
2064 EV_FREQUENT_CHECK; 3519 EV_FREQUENT_CHECK;
2065 } 3520 }
3521 }
3522 while (pendingpri);
2066} 3523}
2067 3524
2068#if EV_IDLE_ENABLE 3525#if EV_IDLE_ENABLE
2069/* make idle watchers pending. this handles the "call-idle */ 3526/* make idle watchers pending. this handles the "call-idle */
2070/* only when higher priorities are idle" logic */ 3527/* only when higher priorities are idle" logic */
2071inline_size void 3528inline_size void
2072idle_reify (EV_P) 3529idle_reify (EV_P)
2073{ 3530{
2074 if (expect_false (idleall)) 3531 if (ecb_expect_false (idleall))
2075 { 3532 {
2076 int pri; 3533 int pri;
2077 3534
2078 for (pri = NUMPRI; pri--; ) 3535 for (pri = NUMPRI; pri--; )
2079 { 3536 {
… …
2109 { 3566 {
2110 ev_at (w) += w->repeat; 3567 ev_at (w) += w->repeat;
2111 if (ev_at (w) < mn_now) 3568 if (ev_at (w) < mn_now)
2112 ev_at (w) = mn_now; 3569 ev_at (w) = mn_now;
2113 3570
2114 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 3571 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > EV_TS_CONST (0.)));
2115 3572
2116 ANHE_at_cache (timers [HEAP0]); 3573 ANHE_at_cache (timers [HEAP0]);
2117 downheap (timers, timercnt, HEAP0); 3574 downheap (timers, timercnt, HEAP0);
2118 } 3575 }
2119 else 3576 else
… …
2127 feed_reverse_done (EV_A_ EV_TIMER); 3584 feed_reverse_done (EV_A_ EV_TIMER);
2128 } 3585 }
2129} 3586}
2130 3587
2131#if EV_PERIODIC_ENABLE 3588#if EV_PERIODIC_ENABLE
3589
3590ecb_noinline
3591static void
3592periodic_recalc (EV_P_ ev_periodic *w)
3593{
3594 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3595 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3596
3597 /* the above almost always errs on the low side */
3598 while (at <= ev_rt_now)
3599 {
3600 ev_tstamp nat = at + w->interval;
3601
3602 /* when resolution fails us, we use ev_rt_now */
3603 if (ecb_expect_false (nat == at))
3604 {
3605 at = ev_rt_now;
3606 break;
3607 }
3608
3609 at = nat;
3610 }
3611
3612 ev_at (w) = at;
3613}
3614
2132/* make periodics pending */ 3615/* make periodics pending */
2133inline_size void 3616inline_size void
2134periodics_reify (EV_P) 3617periodics_reify (EV_P)
2135{ 3618{
2136 EV_FREQUENT_CHECK; 3619 EV_FREQUENT_CHECK;
2137 3620
2138 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3621 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2139 { 3622 {
2140 int feed_count = 0;
2141
2142 do 3623 do
2143 { 3624 {
2144 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3625 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2145 3626
2146 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3627 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2155 ANHE_at_cache (periodics [HEAP0]); 3636 ANHE_at_cache (periodics [HEAP0]);
2156 downheap (periodics, periodiccnt, HEAP0); 3637 downheap (periodics, periodiccnt, HEAP0);
2157 } 3638 }
2158 else if (w->interval) 3639 else if (w->interval)
2159 { 3640 {
2160 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3641 periodic_recalc (EV_A_ w);
2161 /* if next trigger time is not sufficiently in the future, put it there */
2162 /* this might happen because of floating point inexactness */
2163 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2164 {
2165 ev_at (w) += w->interval;
2166
2167 /* if interval is unreasonably low we might still have a time in the past */
2168 /* so correct this. this will make the periodic very inexact, but the user */
2169 /* has effectively asked to get triggered more often than possible */
2170 if (ev_at (w) < ev_rt_now)
2171 ev_at (w) = ev_rt_now;
2172 }
2173
2174 ANHE_at_cache (periodics [HEAP0]); 3642 ANHE_at_cache (periodics [HEAP0]);
2175 downheap (periodics, periodiccnt, HEAP0); 3643 downheap (periodics, periodiccnt, HEAP0);
2176 } 3644 }
2177 else 3645 else
2178 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3646 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2186 } 3654 }
2187} 3655}
2188 3656
2189/* simply recalculate all periodics */ 3657/* simply recalculate all periodics */
2190/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3658/* TODO: maybe ensure that at least one event happens when jumping forward? */
2191static void noinline 3659ecb_noinline ecb_cold
3660static void
2192periodics_reschedule (EV_P) 3661periodics_reschedule (EV_P)
2193{ 3662{
2194 int i; 3663 int i;
2195 3664
2196 /* adjust periodics after time jump */ 3665 /* adjust periodics after time jump */
… …
2199 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3668 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2200 3669
2201 if (w->reschedule_cb) 3670 if (w->reschedule_cb)
2202 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3671 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2203 else if (w->interval) 3672 else if (w->interval)
2204 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3673 periodic_recalc (EV_A_ w);
2205 3674
2206 ANHE_at_cache (periodics [i]); 3675 ANHE_at_cache (periodics [i]);
2207 } 3676 }
2208 3677
2209 reheap (periodics, periodiccnt); 3678 reheap (periodics, periodiccnt);
2210} 3679}
2211#endif 3680#endif
2212 3681
2213/* adjust all timers by a given offset */ 3682/* adjust all timers by a given offset */
2214static void noinline 3683ecb_noinline ecb_cold
3684static void
2215timers_reschedule (EV_P_ ev_tstamp adjust) 3685timers_reschedule (EV_P_ ev_tstamp adjust)
2216{ 3686{
2217 int i; 3687 int i;
2218 3688
2219 for (i = 0; i < timercnt; ++i) 3689 for (i = 0; i < timercnt; ++i)
… …
2228/* also detect if there was a timejump, and act accordingly */ 3698/* also detect if there was a timejump, and act accordingly */
2229inline_speed void 3699inline_speed void
2230time_update (EV_P_ ev_tstamp max_block) 3700time_update (EV_P_ ev_tstamp max_block)
2231{ 3701{
2232#if EV_USE_MONOTONIC 3702#if EV_USE_MONOTONIC
2233 if (expect_true (have_monotonic)) 3703 if (ecb_expect_true (have_monotonic))
2234 { 3704 {
2235 int i; 3705 int i;
2236 ev_tstamp odiff = rtmn_diff; 3706 ev_tstamp odiff = rtmn_diff;
2237 3707
2238 mn_now = get_clock (); 3708 mn_now = get_clock ();
2239 3709
2240 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3710 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
2241 /* interpolate in the meantime */ 3711 /* interpolate in the meantime */
2242 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 3712 if (ecb_expect_true (mn_now - now_floor < EV_TS_CONST (MIN_TIMEJUMP * .5)))
2243 { 3713 {
2244 ev_rt_now = rtmn_diff + mn_now; 3714 ev_rt_now = rtmn_diff + mn_now;
2245 return; 3715 return;
2246 } 3716 }
2247 3717
… …
2256 * doesn't hurt either as we only do this on time-jumps or 3726 * doesn't hurt either as we only do this on time-jumps or
2257 * in the unlikely event of having been preempted here. 3727 * in the unlikely event of having been preempted here.
2258 */ 3728 */
2259 for (i = 4; --i; ) 3729 for (i = 4; --i; )
2260 { 3730 {
3731 ev_tstamp diff;
2261 rtmn_diff = ev_rt_now - mn_now; 3732 rtmn_diff = ev_rt_now - mn_now;
2262 3733
2263 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3734 diff = odiff - rtmn_diff;
3735
3736 if (ecb_expect_true ((diff < EV_TS_CONST (0.) ? -diff : diff) < EV_TS_CONST (MIN_TIMEJUMP)))
2264 return; /* all is well */ 3737 return; /* all is well */
2265 3738
2266 ev_rt_now = ev_time (); 3739 ev_rt_now = ev_time ();
2267 mn_now = get_clock (); 3740 mn_now = get_clock ();
2268 now_floor = mn_now; 3741 now_floor = mn_now;
… …
2277 else 3750 else
2278#endif 3751#endif
2279 { 3752 {
2280 ev_rt_now = ev_time (); 3753 ev_rt_now = ev_time ();
2281 3754
2282 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 3755 if (ecb_expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + EV_TS_CONST (MIN_TIMEJUMP)))
2283 { 3756 {
2284 /* adjust timers. this is easy, as the offset is the same for all of them */ 3757 /* adjust timers. this is easy, as the offset is the same for all of them */
2285 timers_reschedule (EV_A_ ev_rt_now - mn_now); 3758 timers_reschedule (EV_A_ ev_rt_now - mn_now);
2286#if EV_PERIODIC_ENABLE 3759#if EV_PERIODIC_ENABLE
2287 periodics_reschedule (EV_A); 3760 periodics_reschedule (EV_A);
… …
2290 3763
2291 mn_now = ev_rt_now; 3764 mn_now = ev_rt_now;
2292 } 3765 }
2293} 3766}
2294 3767
2295void 3768int
2296ev_loop (EV_P_ int flags) 3769ev_run (EV_P_ int flags)
2297{ 3770{
2298#if EV_FEATURE_API 3771#if EV_FEATURE_API
2299 ++loop_depth; 3772 ++loop_depth;
2300#endif 3773#endif
2301 3774
2302 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 3775 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2303 3776
2304 loop_done = EVUNLOOP_CANCEL; 3777 loop_done = EVBREAK_CANCEL;
2305 3778
2306 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 3779 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2307 3780
2308 do 3781 do
2309 { 3782 {
2310#if EV_VERIFY >= 2 3783#if EV_VERIFY >= 2
2311 ev_verify (EV_A); 3784 ev_verify (EV_A);
2312#endif 3785#endif
2313 3786
2314#ifndef _WIN32 3787#ifndef _WIN32
2315 if (expect_false (curpid)) /* penalise the forking check even more */ 3788 if (ecb_expect_false (curpid)) /* penalise the forking check even more */
2316 if (expect_false (getpid () != curpid)) 3789 if (ecb_expect_false (getpid () != curpid))
2317 { 3790 {
2318 curpid = getpid (); 3791 curpid = getpid ();
2319 postfork = 1; 3792 postfork = 1;
2320 } 3793 }
2321#endif 3794#endif
2322 3795
2323#if EV_FORK_ENABLE 3796#if EV_FORK_ENABLE
2324 /* we might have forked, so queue fork handlers */ 3797 /* we might have forked, so queue fork handlers */
2325 if (expect_false (postfork)) 3798 if (ecb_expect_false (postfork))
2326 if (forkcnt) 3799 if (forkcnt)
2327 { 3800 {
2328 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3801 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2329 EV_INVOKE_PENDING; 3802 EV_INVOKE_PENDING;
2330 } 3803 }
2331#endif 3804#endif
2332 3805
2333#if EV_PREPARE_ENABLE 3806#if EV_PREPARE_ENABLE
2334 /* queue prepare watchers (and execute them) */ 3807 /* queue prepare watchers (and execute them) */
2335 if (expect_false (preparecnt)) 3808 if (ecb_expect_false (preparecnt))
2336 { 3809 {
2337 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3810 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2338 EV_INVOKE_PENDING; 3811 EV_INVOKE_PENDING;
2339 } 3812 }
2340#endif 3813#endif
2341 3814
2342 if (expect_false (loop_done)) 3815 if (ecb_expect_false (loop_done))
2343 break; 3816 break;
2344 3817
2345 /* we might have forked, so reify kernel state if necessary */ 3818 /* we might have forked, so reify kernel state if necessary */
2346 if (expect_false (postfork)) 3819 if (ecb_expect_false (postfork))
2347 loop_fork (EV_A); 3820 loop_fork (EV_A);
2348 3821
2349 /* update fd-related kernel structures */ 3822 /* update fd-related kernel structures */
2350 fd_reify (EV_A); 3823 fd_reify (EV_A);
2351 3824
2352 /* calculate blocking time */ 3825 /* calculate blocking time */
2353 { 3826 {
2354 ev_tstamp waittime = 0.; 3827 ev_tstamp waittime = 0.;
2355 ev_tstamp sleeptime = 0.; 3828 ev_tstamp sleeptime = 0.;
2356 3829
3830 /* remember old timestamp for io_blocktime calculation */
3831 ev_tstamp prev_mn_now = mn_now;
3832
3833 /* update time to cancel out callback processing overhead */
3834 time_update (EV_A_ EV_TS_CONST (EV_TSTAMP_HUGE));
3835
3836 /* from now on, we want a pipe-wake-up */
3837 pipe_write_wanted = 1;
3838
3839 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3840
2357 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3841 if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2358 { 3842 {
2359 /* remember old timestamp for io_blocktime calculation */
2360 ev_tstamp prev_mn_now = mn_now;
2361
2362 /* update time to cancel out callback processing overhead */
2363 time_update (EV_A_ 1e100);
2364
2365 waittime = MAX_BLOCKTIME; 3843 waittime = EV_TS_CONST (MAX_BLOCKTIME);
2366 3844
2367 if (timercnt) 3845 if (timercnt)
2368 { 3846 {
2369 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3847 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2370 if (waittime > to) waittime = to; 3848 if (waittime > to) waittime = to;
2371 } 3849 }
2372 3850
2373#if EV_PERIODIC_ENABLE 3851#if EV_PERIODIC_ENABLE
2374 if (periodiccnt) 3852 if (periodiccnt)
2375 { 3853 {
2376 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3854 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2377 if (waittime > to) waittime = to; 3855 if (waittime > to) waittime = to;
2378 } 3856 }
2379#endif 3857#endif
2380 3858
2381 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3859 /* don't let timeouts decrease the waittime below timeout_blocktime */
2382 if (expect_false (waittime < timeout_blocktime)) 3860 if (ecb_expect_false (waittime < timeout_blocktime))
2383 waittime = timeout_blocktime; 3861 waittime = timeout_blocktime;
2384 3862
3863 /* at this point, we NEED to wait, so we have to ensure */
3864 /* to pass a minimum nonzero value to the backend */
3865 if (ecb_expect_false (waittime < backend_mintime))
3866 waittime = backend_mintime;
3867
2385 /* extra check because io_blocktime is commonly 0 */ 3868 /* extra check because io_blocktime is commonly 0 */
2386 if (expect_false (io_blocktime)) 3869 if (ecb_expect_false (io_blocktime))
2387 { 3870 {
2388 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3871 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2389 3872
2390 if (sleeptime > waittime - backend_fudge) 3873 if (sleeptime > waittime - backend_mintime)
2391 sleeptime = waittime - backend_fudge; 3874 sleeptime = waittime - backend_mintime;
2392 3875
2393 if (expect_true (sleeptime > 0.)) 3876 if (ecb_expect_true (sleeptime > EV_TS_CONST (0.)))
2394 { 3877 {
2395 ev_sleep (sleeptime); 3878 ev_sleep (sleeptime);
2396 waittime -= sleeptime; 3879 waittime -= sleeptime;
2397 } 3880 }
2398 } 3881 }
2399 } 3882 }
2400 3883
2401#if EV_FEATURE_API 3884#if EV_FEATURE_API
2402 ++loop_count; 3885 ++loop_count;
2403#endif 3886#endif
2404 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3887 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2405 backend_poll (EV_A_ waittime); 3888 backend_poll (EV_A_ waittime);
2406 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 3889 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3890
3891 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3892
3893 ECB_MEMORY_FENCE_ACQUIRE;
3894 if (pipe_write_skipped)
3895 {
3896 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3897 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3898 }
2407 3899
2408 /* update ev_rt_now, do magic */ 3900 /* update ev_rt_now, do magic */
2409 time_update (EV_A_ waittime + sleeptime); 3901 time_update (EV_A_ waittime + sleeptime);
2410 } 3902 }
2411 3903
… …
2420 idle_reify (EV_A); 3912 idle_reify (EV_A);
2421#endif 3913#endif
2422 3914
2423#if EV_CHECK_ENABLE 3915#if EV_CHECK_ENABLE
2424 /* queue check watchers, to be executed first */ 3916 /* queue check watchers, to be executed first */
2425 if (expect_false (checkcnt)) 3917 if (ecb_expect_false (checkcnt))
2426 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3918 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2427#endif 3919#endif
2428 3920
2429 EV_INVOKE_PENDING; 3921 EV_INVOKE_PENDING;
2430 } 3922 }
2431 while (expect_true ( 3923 while (ecb_expect_true (
2432 activecnt 3924 activecnt
2433 && !loop_done 3925 && !loop_done
2434 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3926 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2435 )); 3927 ));
2436 3928
2437 if (loop_done == EVUNLOOP_ONE) 3929 if (loop_done == EVBREAK_ONE)
2438 loop_done = EVUNLOOP_CANCEL; 3930 loop_done = EVBREAK_CANCEL;
2439 3931
2440#if EV_FEATURE_API 3932#if EV_FEATURE_API
2441 --loop_depth; 3933 --loop_depth;
2442#endif 3934#endif
2443}
2444 3935
3936 return activecnt;
3937}
3938
2445void 3939void
2446ev_unloop (EV_P_ int how) 3940ev_break (EV_P_ int how) EV_NOEXCEPT
2447{ 3941{
2448 loop_done = how; 3942 loop_done = how;
2449} 3943}
2450 3944
2451void 3945void
2452ev_ref (EV_P) 3946ev_ref (EV_P) EV_NOEXCEPT
2453{ 3947{
2454 ++activecnt; 3948 ++activecnt;
2455} 3949}
2456 3950
2457void 3951void
2458ev_unref (EV_P) 3952ev_unref (EV_P) EV_NOEXCEPT
2459{ 3953{
2460 --activecnt; 3954 --activecnt;
2461} 3955}
2462 3956
2463void 3957void
2464ev_now_update (EV_P) 3958ev_now_update (EV_P) EV_NOEXCEPT
2465{ 3959{
2466 time_update (EV_A_ 1e100); 3960 time_update (EV_A_ EV_TSTAMP_HUGE);
2467} 3961}
2468 3962
2469void 3963void
2470ev_suspend (EV_P) 3964ev_suspend (EV_P) EV_NOEXCEPT
2471{ 3965{
2472 ev_now_update (EV_A); 3966 ev_now_update (EV_A);
2473} 3967}
2474 3968
2475void 3969void
2476ev_resume (EV_P) 3970ev_resume (EV_P) EV_NOEXCEPT
2477{ 3971{
2478 ev_tstamp mn_prev = mn_now; 3972 ev_tstamp mn_prev = mn_now;
2479 3973
2480 ev_now_update (EV_A); 3974 ev_now_update (EV_A);
2481 timers_reschedule (EV_A_ mn_now - mn_prev); 3975 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2498inline_size void 3992inline_size void
2499wlist_del (WL *head, WL elem) 3993wlist_del (WL *head, WL elem)
2500{ 3994{
2501 while (*head) 3995 while (*head)
2502 { 3996 {
2503 if (expect_true (*head == elem)) 3997 if (ecb_expect_true (*head == elem))
2504 { 3998 {
2505 *head = elem->next; 3999 *head = elem->next;
2506 break; 4000 break;
2507 } 4001 }
2508 4002
… …
2520 w->pending = 0; 4014 w->pending = 0;
2521 } 4015 }
2522} 4016}
2523 4017
2524int 4018int
2525ev_clear_pending (EV_P_ void *w) 4019ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
2526{ 4020{
2527 W w_ = (W)w; 4021 W w_ = (W)w;
2528 int pending = w_->pending; 4022 int pending = w_->pending;
2529 4023
2530 if (expect_true (pending)) 4024 if (ecb_expect_true (pending))
2531 { 4025 {
2532 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 4026 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2533 p->w = (W)&pending_w; 4027 p->w = (W)&pending_w;
2534 w_->pending = 0; 4028 w_->pending = 0;
2535 return p->events; 4029 return p->events;
… …
2562 w->active = 0; 4056 w->active = 0;
2563} 4057}
2564 4058
2565/*****************************************************************************/ 4059/*****************************************************************************/
2566 4060
2567void noinline 4061ecb_noinline
4062void
2568ev_io_start (EV_P_ ev_io *w) 4063ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
2569{ 4064{
2570 int fd = w->fd; 4065 int fd = w->fd;
2571 4066
2572 if (expect_false (ev_is_active (w))) 4067 if (ecb_expect_false (ev_is_active (w)))
2573 return; 4068 return;
2574 4069
2575 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 4070 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2576 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 4071 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2577 4072
4073#if EV_VERIFY >= 2
4074 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
4075#endif
2578 EV_FREQUENT_CHECK; 4076 EV_FREQUENT_CHECK;
2579 4077
2580 ev_start (EV_A_ (W)w, 1); 4078 ev_start (EV_A_ (W)w, 1);
2581 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 4079 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
2582 wlist_add (&anfds[fd].head, (WL)w); 4080 wlist_add (&anfds[fd].head, (WL)w);
4081
4082 /* common bug, apparently */
4083 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
2583 4084
2584 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 4085 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2585 w->events &= ~EV__IOFDSET; 4086 w->events &= ~EV__IOFDSET;
2586 4087
2587 EV_FREQUENT_CHECK; 4088 EV_FREQUENT_CHECK;
2588} 4089}
2589 4090
2590void noinline 4091ecb_noinline
4092void
2591ev_io_stop (EV_P_ ev_io *w) 4093ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
2592{ 4094{
2593 clear_pending (EV_A_ (W)w); 4095 clear_pending (EV_A_ (W)w);
2594 if (expect_false (!ev_is_active (w))) 4096 if (ecb_expect_false (!ev_is_active (w)))
2595 return; 4097 return;
2596 4098
2597 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 4099 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2598 4100
4101#if EV_VERIFY >= 2
4102 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
4103#endif
2599 EV_FREQUENT_CHECK; 4104 EV_FREQUENT_CHECK;
2600 4105
2601 wlist_del (&anfds[w->fd].head, (WL)w); 4106 wlist_del (&anfds[w->fd].head, (WL)w);
2602 ev_stop (EV_A_ (W)w); 4107 ev_stop (EV_A_ (W)w);
2603 4108
2604 fd_change (EV_A_ w->fd, 1); 4109 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2605 4110
2606 EV_FREQUENT_CHECK; 4111 EV_FREQUENT_CHECK;
2607} 4112}
2608 4113
2609void noinline 4114ecb_noinline
4115void
2610ev_timer_start (EV_P_ ev_timer *w) 4116ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
2611{ 4117{
2612 if (expect_false (ev_is_active (w))) 4118 if (ecb_expect_false (ev_is_active (w)))
2613 return; 4119 return;
2614 4120
2615 ev_at (w) += mn_now; 4121 ev_at (w) += mn_now;
2616 4122
2617 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 4123 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2618 4124
2619 EV_FREQUENT_CHECK; 4125 EV_FREQUENT_CHECK;
2620 4126
2621 ++timercnt; 4127 ++timercnt;
2622 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 4128 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
2623 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 4129 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
2624 ANHE_w (timers [ev_active (w)]) = (WT)w; 4130 ANHE_w (timers [ev_active (w)]) = (WT)w;
2625 ANHE_at_cache (timers [ev_active (w)]); 4131 ANHE_at_cache (timers [ev_active (w)]);
2626 upheap (timers, ev_active (w)); 4132 upheap (timers, ev_active (w));
2627 4133
2628 EV_FREQUENT_CHECK; 4134 EV_FREQUENT_CHECK;
2629 4135
2630 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 4136 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2631} 4137}
2632 4138
2633void noinline 4139ecb_noinline
4140void
2634ev_timer_stop (EV_P_ ev_timer *w) 4141ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
2635{ 4142{
2636 clear_pending (EV_A_ (W)w); 4143 clear_pending (EV_A_ (W)w);
2637 if (expect_false (!ev_is_active (w))) 4144 if (ecb_expect_false (!ev_is_active (w)))
2638 return; 4145 return;
2639 4146
2640 EV_FREQUENT_CHECK; 4147 EV_FREQUENT_CHECK;
2641 4148
2642 { 4149 {
… …
2644 4151
2645 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 4152 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2646 4153
2647 --timercnt; 4154 --timercnt;
2648 4155
2649 if (expect_true (active < timercnt + HEAP0)) 4156 if (ecb_expect_true (active < timercnt + HEAP0))
2650 { 4157 {
2651 timers [active] = timers [timercnt + HEAP0]; 4158 timers [active] = timers [timercnt + HEAP0];
2652 adjustheap (timers, timercnt, active); 4159 adjustheap (timers, timercnt, active);
2653 } 4160 }
2654 } 4161 }
… …
2658 ev_stop (EV_A_ (W)w); 4165 ev_stop (EV_A_ (W)w);
2659 4166
2660 EV_FREQUENT_CHECK; 4167 EV_FREQUENT_CHECK;
2661} 4168}
2662 4169
2663void noinline 4170ecb_noinline
4171void
2664ev_timer_again (EV_P_ ev_timer *w) 4172ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
2665{ 4173{
2666 EV_FREQUENT_CHECK; 4174 EV_FREQUENT_CHECK;
4175
4176 clear_pending (EV_A_ (W)w);
2667 4177
2668 if (ev_is_active (w)) 4178 if (ev_is_active (w))
2669 { 4179 {
2670 if (w->repeat) 4180 if (w->repeat)
2671 { 4181 {
… …
2684 4194
2685 EV_FREQUENT_CHECK; 4195 EV_FREQUENT_CHECK;
2686} 4196}
2687 4197
2688ev_tstamp 4198ev_tstamp
2689ev_timer_remaining (EV_P_ ev_timer *w) 4199ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
2690{ 4200{
2691 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4201 return ev_at (w) - (ev_is_active (w) ? mn_now : EV_TS_CONST (0.));
2692} 4202}
2693 4203
2694#if EV_PERIODIC_ENABLE 4204#if EV_PERIODIC_ENABLE
2695void noinline 4205ecb_noinline
4206void
2696ev_periodic_start (EV_P_ ev_periodic *w) 4207ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
2697{ 4208{
2698 if (expect_false (ev_is_active (w))) 4209 if (ecb_expect_false (ev_is_active (w)))
2699 return; 4210 return;
2700 4211
2701 if (w->reschedule_cb) 4212 if (w->reschedule_cb)
2702 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4213 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2703 else if (w->interval) 4214 else if (w->interval)
2704 { 4215 {
2705 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 4216 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2706 /* this formula differs from the one in periodic_reify because we do not always round up */ 4217 periodic_recalc (EV_A_ w);
2707 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2708 } 4218 }
2709 else 4219 else
2710 ev_at (w) = w->offset; 4220 ev_at (w) = w->offset;
2711 4221
2712 EV_FREQUENT_CHECK; 4222 EV_FREQUENT_CHECK;
2713 4223
2714 ++periodiccnt; 4224 ++periodiccnt;
2715 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4225 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2716 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4226 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
2717 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4227 ANHE_w (periodics [ev_active (w)]) = (WT)w;
2718 ANHE_at_cache (periodics [ev_active (w)]); 4228 ANHE_at_cache (periodics [ev_active (w)]);
2719 upheap (periodics, ev_active (w)); 4229 upheap (periodics, ev_active (w));
2720 4230
2721 EV_FREQUENT_CHECK; 4231 EV_FREQUENT_CHECK;
2722 4232
2723 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4233 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2724} 4234}
2725 4235
2726void noinline 4236ecb_noinline
4237void
2727ev_periodic_stop (EV_P_ ev_periodic *w) 4238ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
2728{ 4239{
2729 clear_pending (EV_A_ (W)w); 4240 clear_pending (EV_A_ (W)w);
2730 if (expect_false (!ev_is_active (w))) 4241 if (ecb_expect_false (!ev_is_active (w)))
2731 return; 4242 return;
2732 4243
2733 EV_FREQUENT_CHECK; 4244 EV_FREQUENT_CHECK;
2734 4245
2735 { 4246 {
… …
2737 4248
2738 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 4249 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2739 4250
2740 --periodiccnt; 4251 --periodiccnt;
2741 4252
2742 if (expect_true (active < periodiccnt + HEAP0)) 4253 if (ecb_expect_true (active < periodiccnt + HEAP0))
2743 { 4254 {
2744 periodics [active] = periodics [periodiccnt + HEAP0]; 4255 periodics [active] = periodics [periodiccnt + HEAP0];
2745 adjustheap (periodics, periodiccnt, active); 4256 adjustheap (periodics, periodiccnt, active);
2746 } 4257 }
2747 } 4258 }
… …
2749 ev_stop (EV_A_ (W)w); 4260 ev_stop (EV_A_ (W)w);
2750 4261
2751 EV_FREQUENT_CHECK; 4262 EV_FREQUENT_CHECK;
2752} 4263}
2753 4264
2754void noinline 4265ecb_noinline
4266void
2755ev_periodic_again (EV_P_ ev_periodic *w) 4267ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
2756{ 4268{
2757 /* TODO: use adjustheap and recalculation */ 4269 /* TODO: use adjustheap and recalculation */
2758 ev_periodic_stop (EV_A_ w); 4270 ev_periodic_stop (EV_A_ w);
2759 ev_periodic_start (EV_A_ w); 4271 ev_periodic_start (EV_A_ w);
2760} 4272}
… …
2764# define SA_RESTART 0 4276# define SA_RESTART 0
2765#endif 4277#endif
2766 4278
2767#if EV_SIGNAL_ENABLE 4279#if EV_SIGNAL_ENABLE
2768 4280
2769void noinline 4281ecb_noinline
4282void
2770ev_signal_start (EV_P_ ev_signal *w) 4283ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
2771{ 4284{
2772 if (expect_false (ev_is_active (w))) 4285 if (ecb_expect_false (ev_is_active (w)))
2773 return; 4286 return;
2774 4287
2775 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4288 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2776 4289
2777#if EV_MULTIPLICITY 4290#if EV_MULTIPLICITY
2778 assert (("libev: a signal must not be attached to two different loops", 4291 assert (("libev: a signal must not be attached to two different loops",
2779 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4292 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2780 4293
2781 signals [w->signum - 1].loop = EV_A; 4294 signals [w->signum - 1].loop = EV_A;
4295 ECB_MEMORY_FENCE_RELEASE;
2782#endif 4296#endif
2783 4297
2784 EV_FREQUENT_CHECK; 4298 EV_FREQUENT_CHECK;
2785 4299
2786#if EV_USE_SIGNALFD 4300#if EV_USE_SIGNALFD
… …
2833 sa.sa_handler = ev_sighandler; 4347 sa.sa_handler = ev_sighandler;
2834 sigfillset (&sa.sa_mask); 4348 sigfillset (&sa.sa_mask);
2835 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 4349 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2836 sigaction (w->signum, &sa, 0); 4350 sigaction (w->signum, &sa, 0);
2837 4351
4352 if (origflags & EVFLAG_NOSIGMASK)
4353 {
2838 sigemptyset (&sa.sa_mask); 4354 sigemptyset (&sa.sa_mask);
2839 sigaddset (&sa.sa_mask, w->signum); 4355 sigaddset (&sa.sa_mask, w->signum);
2840 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 4356 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
4357 }
2841#endif 4358#endif
2842 } 4359 }
2843 4360
2844 EV_FREQUENT_CHECK; 4361 EV_FREQUENT_CHECK;
2845} 4362}
2846 4363
2847void noinline 4364ecb_noinline
4365void
2848ev_signal_stop (EV_P_ ev_signal *w) 4366ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
2849{ 4367{
2850 clear_pending (EV_A_ (W)w); 4368 clear_pending (EV_A_ (W)w);
2851 if (expect_false (!ev_is_active (w))) 4369 if (ecb_expect_false (!ev_is_active (w)))
2852 return; 4370 return;
2853 4371
2854 EV_FREQUENT_CHECK; 4372 EV_FREQUENT_CHECK;
2855 4373
2856 wlist_del (&signals [w->signum - 1].head, (WL)w); 4374 wlist_del (&signals [w->signum - 1].head, (WL)w);
… …
2884#endif 4402#endif
2885 4403
2886#if EV_CHILD_ENABLE 4404#if EV_CHILD_ENABLE
2887 4405
2888void 4406void
2889ev_child_start (EV_P_ ev_child *w) 4407ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
2890{ 4408{
2891#if EV_MULTIPLICITY 4409#if EV_MULTIPLICITY
2892 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4410 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2893#endif 4411#endif
2894 if (expect_false (ev_is_active (w))) 4412 if (ecb_expect_false (ev_is_active (w)))
2895 return; 4413 return;
2896 4414
2897 EV_FREQUENT_CHECK; 4415 EV_FREQUENT_CHECK;
2898 4416
2899 ev_start (EV_A_ (W)w, 1); 4417 ev_start (EV_A_ (W)w, 1);
… …
2901 4419
2902 EV_FREQUENT_CHECK; 4420 EV_FREQUENT_CHECK;
2903} 4421}
2904 4422
2905void 4423void
2906ev_child_stop (EV_P_ ev_child *w) 4424ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
2907{ 4425{
2908 clear_pending (EV_A_ (W)w); 4426 clear_pending (EV_A_ (W)w);
2909 if (expect_false (!ev_is_active (w))) 4427 if (ecb_expect_false (!ev_is_active (w)))
2910 return; 4428 return;
2911 4429
2912 EV_FREQUENT_CHECK; 4430 EV_FREQUENT_CHECK;
2913 4431
2914 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w); 4432 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
… …
2928 4446
2929#define DEF_STAT_INTERVAL 5.0074891 4447#define DEF_STAT_INTERVAL 5.0074891
2930#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4448#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2931#define MIN_STAT_INTERVAL 0.1074891 4449#define MIN_STAT_INTERVAL 0.1074891
2932 4450
2933static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4451ecb_noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2934 4452
2935#if EV_USE_INOTIFY 4453#if EV_USE_INOTIFY
2936 4454
2937/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ 4455/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
2938# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4456# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2939 4457
2940static void noinline 4458ecb_noinline
4459static void
2941infy_add (EV_P_ ev_stat *w) 4460infy_add (EV_P_ ev_stat *w)
2942{ 4461{
2943 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); 4462 w->wd = inotify_add_watch (fs_fd, w->path,
4463 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4464 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4465 | IN_DONT_FOLLOW | IN_MASK_ADD);
2944 4466
2945 if (w->wd >= 0) 4467 if (w->wd >= 0)
2946 { 4468 {
2947 struct statfs sfs; 4469 struct statfs sfs;
2948 4470
… …
2952 4474
2953 if (!fs_2625) 4475 if (!fs_2625)
2954 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4476 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2955 else if (!statfs (w->path, &sfs) 4477 else if (!statfs (w->path, &sfs)
2956 && (sfs.f_type == 0x1373 /* devfs */ 4478 && (sfs.f_type == 0x1373 /* devfs */
4479 || sfs.f_type == 0x4006 /* fat */
4480 || sfs.f_type == 0x4d44 /* msdos */
2957 || sfs.f_type == 0xEF53 /* ext2/3 */ 4481 || sfs.f_type == 0xEF53 /* ext2/3 */
4482 || sfs.f_type == 0x72b6 /* jffs2 */
4483 || sfs.f_type == 0x858458f6 /* ramfs */
4484 || sfs.f_type == 0x5346544e /* ntfs */
2958 || sfs.f_type == 0x3153464a /* jfs */ 4485 || sfs.f_type == 0x3153464a /* jfs */
4486 || sfs.f_type == 0x9123683e /* btrfs */
2959 || sfs.f_type == 0x52654973 /* reiser3 */ 4487 || sfs.f_type == 0x52654973 /* reiser3 */
2960 || sfs.f_type == 0x01021994 /* tempfs */ 4488 || sfs.f_type == 0x01021994 /* tmpfs */
2961 || sfs.f_type == 0x58465342 /* xfs */)) 4489 || sfs.f_type == 0x58465342 /* xfs */))
2962 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4490 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
2963 else 4491 else
2964 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4492 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2965 } 4493 }
… …
2986 if (!pend || pend == path) 4514 if (!pend || pend == path)
2987 break; 4515 break;
2988 4516
2989 *pend = 0; 4517 *pend = 0;
2990 w->wd = inotify_add_watch (fs_fd, path, mask); 4518 w->wd = inotify_add_watch (fs_fd, path, mask);
2991 } 4519 }
2992 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 4520 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2993 } 4521 }
2994 } 4522 }
2995 4523
2996 if (w->wd >= 0) 4524 if (w->wd >= 0)
… …
3000 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4528 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3001 ev_timer_again (EV_A_ &w->timer); 4529 ev_timer_again (EV_A_ &w->timer);
3002 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4530 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3003} 4531}
3004 4532
3005static void noinline 4533ecb_noinline
4534static void
3006infy_del (EV_P_ ev_stat *w) 4535infy_del (EV_P_ ev_stat *w)
3007{ 4536{
3008 int slot; 4537 int slot;
3009 int wd = w->wd; 4538 int wd = w->wd;
3010 4539
… …
3017 4546
3018 /* remove this watcher, if others are watching it, they will rearm */ 4547 /* remove this watcher, if others are watching it, they will rearm */
3019 inotify_rm_watch (fs_fd, wd); 4548 inotify_rm_watch (fs_fd, wd);
3020} 4549}
3021 4550
3022static void noinline 4551ecb_noinline
4552static void
3023infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4553infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
3024{ 4554{
3025 if (slot < 0) 4555 if (slot < 0)
3026 /* overflow, need to check for all hash slots */ 4556 /* overflow, need to check for all hash slots */
3027 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4557 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
3063 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4593 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3064 ofs += sizeof (struct inotify_event) + ev->len; 4594 ofs += sizeof (struct inotify_event) + ev->len;
3065 } 4595 }
3066} 4596}
3067 4597
3068inline_size unsigned int
3069ev_linux_version (void)
3070{
3071 struct utsname buf;
3072 unsigned int v;
3073 int i;
3074 char *p = buf.release;
3075
3076 if (uname (&buf))
3077 return 0;
3078
3079 for (i = 3+1; --i; )
3080 {
3081 unsigned int c = 0;
3082
3083 for (;;)
3084 {
3085 if (*p >= '0' && *p <= '9')
3086 c = c * 10 + *p++ - '0';
3087 else
3088 {
3089 p += *p == '.';
3090 break;
3091 }
3092 }
3093
3094 v = (v << 8) | c;
3095 }
3096
3097 return v;
3098}
3099
3100inline_size void 4598inline_size ecb_cold
4599void
3101ev_check_2625 (EV_P) 4600ev_check_2625 (EV_P)
3102{ 4601{
3103 /* kernels < 2.6.25 are borked 4602 /* kernels < 2.6.25 are borked
3104 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4603 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3105 */ 4604 */
… …
3110} 4609}
3111 4610
3112inline_size int 4611inline_size int
3113infy_newfd (void) 4612infy_newfd (void)
3114{ 4613{
3115#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4614#if defined IN_CLOEXEC && defined IN_NONBLOCK
3116 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4615 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3117 if (fd >= 0) 4616 if (fd >= 0)
3118 return fd; 4617 return fd;
3119#endif 4618#endif
3120 return inotify_init (); 4619 return inotify_init ();
… …
3195#else 4694#else
3196# define EV_LSTAT(p,b) lstat (p, b) 4695# define EV_LSTAT(p,b) lstat (p, b)
3197#endif 4696#endif
3198 4697
3199void 4698void
3200ev_stat_stat (EV_P_ ev_stat *w) 4699ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
3201{ 4700{
3202 if (lstat (w->path, &w->attr) < 0) 4701 if (lstat (w->path, &w->attr) < 0)
3203 w->attr.st_nlink = 0; 4702 w->attr.st_nlink = 0;
3204 else if (!w->attr.st_nlink) 4703 else if (!w->attr.st_nlink)
3205 w->attr.st_nlink = 1; 4704 w->attr.st_nlink = 1;
3206} 4705}
3207 4706
3208static void noinline 4707ecb_noinline
4708static void
3209stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4709stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3210{ 4710{
3211 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4711 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3212 4712
3213 ev_statdata prev = w->attr; 4713 ev_statdata prev = w->attr;
… …
3244 ev_feed_event (EV_A_ w, EV_STAT); 4744 ev_feed_event (EV_A_ w, EV_STAT);
3245 } 4745 }
3246} 4746}
3247 4747
3248void 4748void
3249ev_stat_start (EV_P_ ev_stat *w) 4749ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
3250{ 4750{
3251 if (expect_false (ev_is_active (w))) 4751 if (ecb_expect_false (ev_is_active (w)))
3252 return; 4752 return;
3253 4753
3254 ev_stat_stat (EV_A_ w); 4754 ev_stat_stat (EV_A_ w);
3255 4755
3256 if (w->interval < MIN_STAT_INTERVAL && w->interval) 4756 if (w->interval < MIN_STAT_INTERVAL && w->interval)
… …
3275 4775
3276 EV_FREQUENT_CHECK; 4776 EV_FREQUENT_CHECK;
3277} 4777}
3278 4778
3279void 4779void
3280ev_stat_stop (EV_P_ ev_stat *w) 4780ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
3281{ 4781{
3282 clear_pending (EV_A_ (W)w); 4782 clear_pending (EV_A_ (W)w);
3283 if (expect_false (!ev_is_active (w))) 4783 if (ecb_expect_false (!ev_is_active (w)))
3284 return; 4784 return;
3285 4785
3286 EV_FREQUENT_CHECK; 4786 EV_FREQUENT_CHECK;
3287 4787
3288#if EV_USE_INOTIFY 4788#if EV_USE_INOTIFY
… …
3301} 4801}
3302#endif 4802#endif
3303 4803
3304#if EV_IDLE_ENABLE 4804#if EV_IDLE_ENABLE
3305void 4805void
3306ev_idle_start (EV_P_ ev_idle *w) 4806ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
3307{ 4807{
3308 if (expect_false (ev_is_active (w))) 4808 if (ecb_expect_false (ev_is_active (w)))
3309 return; 4809 return;
3310 4810
3311 pri_adjust (EV_A_ (W)w); 4811 pri_adjust (EV_A_ (W)w);
3312 4812
3313 EV_FREQUENT_CHECK; 4813 EV_FREQUENT_CHECK;
… …
3316 int active = ++idlecnt [ABSPRI (w)]; 4816 int active = ++idlecnt [ABSPRI (w)];
3317 4817
3318 ++idleall; 4818 ++idleall;
3319 ev_start (EV_A_ (W)w, active); 4819 ev_start (EV_A_ (W)w, active);
3320 4820
3321 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 4821 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
3322 idles [ABSPRI (w)][active - 1] = w; 4822 idles [ABSPRI (w)][active - 1] = w;
3323 } 4823 }
3324 4824
3325 EV_FREQUENT_CHECK; 4825 EV_FREQUENT_CHECK;
3326} 4826}
3327 4827
3328void 4828void
3329ev_idle_stop (EV_P_ ev_idle *w) 4829ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
3330{ 4830{
3331 clear_pending (EV_A_ (W)w); 4831 clear_pending (EV_A_ (W)w);
3332 if (expect_false (!ev_is_active (w))) 4832 if (ecb_expect_false (!ev_is_active (w)))
3333 return; 4833 return;
3334 4834
3335 EV_FREQUENT_CHECK; 4835 EV_FREQUENT_CHECK;
3336 4836
3337 { 4837 {
… …
3348} 4848}
3349#endif 4849#endif
3350 4850
3351#if EV_PREPARE_ENABLE 4851#if EV_PREPARE_ENABLE
3352void 4852void
3353ev_prepare_start (EV_P_ ev_prepare *w) 4853ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
3354{ 4854{
3355 if (expect_false (ev_is_active (w))) 4855 if (ecb_expect_false (ev_is_active (w)))
3356 return; 4856 return;
3357 4857
3358 EV_FREQUENT_CHECK; 4858 EV_FREQUENT_CHECK;
3359 4859
3360 ev_start (EV_A_ (W)w, ++preparecnt); 4860 ev_start (EV_A_ (W)w, ++preparecnt);
3361 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4861 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
3362 prepares [preparecnt - 1] = w; 4862 prepares [preparecnt - 1] = w;
3363 4863
3364 EV_FREQUENT_CHECK; 4864 EV_FREQUENT_CHECK;
3365} 4865}
3366 4866
3367void 4867void
3368ev_prepare_stop (EV_P_ ev_prepare *w) 4868ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
3369{ 4869{
3370 clear_pending (EV_A_ (W)w); 4870 clear_pending (EV_A_ (W)w);
3371 if (expect_false (!ev_is_active (w))) 4871 if (ecb_expect_false (!ev_is_active (w)))
3372 return; 4872 return;
3373 4873
3374 EV_FREQUENT_CHECK; 4874 EV_FREQUENT_CHECK;
3375 4875
3376 { 4876 {
… …
3386} 4886}
3387#endif 4887#endif
3388 4888
3389#if EV_CHECK_ENABLE 4889#if EV_CHECK_ENABLE
3390void 4890void
3391ev_check_start (EV_P_ ev_check *w) 4891ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
3392{ 4892{
3393 if (expect_false (ev_is_active (w))) 4893 if (ecb_expect_false (ev_is_active (w)))
3394 return; 4894 return;
3395 4895
3396 EV_FREQUENT_CHECK; 4896 EV_FREQUENT_CHECK;
3397 4897
3398 ev_start (EV_A_ (W)w, ++checkcnt); 4898 ev_start (EV_A_ (W)w, ++checkcnt);
3399 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 4899 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
3400 checks [checkcnt - 1] = w; 4900 checks [checkcnt - 1] = w;
3401 4901
3402 EV_FREQUENT_CHECK; 4902 EV_FREQUENT_CHECK;
3403} 4903}
3404 4904
3405void 4905void
3406ev_check_stop (EV_P_ ev_check *w) 4906ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
3407{ 4907{
3408 clear_pending (EV_A_ (W)w); 4908 clear_pending (EV_A_ (W)w);
3409 if (expect_false (!ev_is_active (w))) 4909 if (ecb_expect_false (!ev_is_active (w)))
3410 return; 4910 return;
3411 4911
3412 EV_FREQUENT_CHECK; 4912 EV_FREQUENT_CHECK;
3413 4913
3414 { 4914 {
… …
3423 EV_FREQUENT_CHECK; 4923 EV_FREQUENT_CHECK;
3424} 4924}
3425#endif 4925#endif
3426 4926
3427#if EV_EMBED_ENABLE 4927#if EV_EMBED_ENABLE
3428void noinline 4928ecb_noinline
4929void
3429ev_embed_sweep (EV_P_ ev_embed *w) 4930ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
3430{ 4931{
3431 ev_loop (w->other, EVLOOP_NONBLOCK); 4932 ev_run (w->other, EVRUN_NOWAIT);
3432} 4933}
3433 4934
3434static void 4935static void
3435embed_io_cb (EV_P_ ev_io *io, int revents) 4936embed_io_cb (EV_P_ ev_io *io, int revents)
3436{ 4937{
3437 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4938 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3438 4939
3439 if (ev_cb (w)) 4940 if (ev_cb (w))
3440 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4941 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3441 else 4942 else
3442 ev_loop (w->other, EVLOOP_NONBLOCK); 4943 ev_run (w->other, EVRUN_NOWAIT);
3443} 4944}
3444 4945
3445static void 4946static void
3446embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4947embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3447{ 4948{
… …
3451 EV_P = w->other; 4952 EV_P = w->other;
3452 4953
3453 while (fdchangecnt) 4954 while (fdchangecnt)
3454 { 4955 {
3455 fd_reify (EV_A); 4956 fd_reify (EV_A);
3456 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4957 ev_run (EV_A_ EVRUN_NOWAIT);
3457 } 4958 }
3458 } 4959 }
3459} 4960}
3460 4961
3461static void 4962static void
… …
3467 4968
3468 { 4969 {
3469 EV_P = w->other; 4970 EV_P = w->other;
3470 4971
3471 ev_loop_fork (EV_A); 4972 ev_loop_fork (EV_A);
3472 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4973 ev_run (EV_A_ EVRUN_NOWAIT);
3473 } 4974 }
3474 4975
3475 ev_embed_start (EV_A_ w); 4976 ev_embed_start (EV_A_ w);
3476} 4977}
3477 4978
… …
3482 ev_idle_stop (EV_A_ idle); 4983 ev_idle_stop (EV_A_ idle);
3483} 4984}
3484#endif 4985#endif
3485 4986
3486void 4987void
3487ev_embed_start (EV_P_ ev_embed *w) 4988ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
3488{ 4989{
3489 if (expect_false (ev_is_active (w))) 4990 if (ecb_expect_false (ev_is_active (w)))
3490 return; 4991 return;
3491 4992
3492 { 4993 {
3493 EV_P = w->other; 4994 EV_P = w->other;
3494 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4995 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
… …
3513 5014
3514 EV_FREQUENT_CHECK; 5015 EV_FREQUENT_CHECK;
3515} 5016}
3516 5017
3517void 5018void
3518ev_embed_stop (EV_P_ ev_embed *w) 5019ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
3519{ 5020{
3520 clear_pending (EV_A_ (W)w); 5021 clear_pending (EV_A_ (W)w);
3521 if (expect_false (!ev_is_active (w))) 5022 if (ecb_expect_false (!ev_is_active (w)))
3522 return; 5023 return;
3523 5024
3524 EV_FREQUENT_CHECK; 5025 EV_FREQUENT_CHECK;
3525 5026
3526 ev_io_stop (EV_A_ &w->io); 5027 ev_io_stop (EV_A_ &w->io);
… …
3533} 5034}
3534#endif 5035#endif
3535 5036
3536#if EV_FORK_ENABLE 5037#if EV_FORK_ENABLE
3537void 5038void
3538ev_fork_start (EV_P_ ev_fork *w) 5039ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
3539{ 5040{
3540 if (expect_false (ev_is_active (w))) 5041 if (ecb_expect_false (ev_is_active (w)))
3541 return; 5042 return;
3542 5043
3543 EV_FREQUENT_CHECK; 5044 EV_FREQUENT_CHECK;
3544 5045
3545 ev_start (EV_A_ (W)w, ++forkcnt); 5046 ev_start (EV_A_ (W)w, ++forkcnt);
3546 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 5047 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
3547 forks [forkcnt - 1] = w; 5048 forks [forkcnt - 1] = w;
3548 5049
3549 EV_FREQUENT_CHECK; 5050 EV_FREQUENT_CHECK;
3550} 5051}
3551 5052
3552void 5053void
3553ev_fork_stop (EV_P_ ev_fork *w) 5054ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
3554{ 5055{
3555 clear_pending (EV_A_ (W)w); 5056 clear_pending (EV_A_ (W)w);
3556 if (expect_false (!ev_is_active (w))) 5057 if (ecb_expect_false (!ev_is_active (w)))
3557 return; 5058 return;
3558 5059
3559 EV_FREQUENT_CHECK; 5060 EV_FREQUENT_CHECK;
3560 5061
3561 { 5062 {
… …
3569 5070
3570 EV_FREQUENT_CHECK; 5071 EV_FREQUENT_CHECK;
3571} 5072}
3572#endif 5073#endif
3573 5074
5075#if EV_CLEANUP_ENABLE
5076void
5077ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
5078{
5079 if (ecb_expect_false (ev_is_active (w)))
5080 return;
5081
5082 EV_FREQUENT_CHECK;
5083
5084 ev_start (EV_A_ (W)w, ++cleanupcnt);
5085 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
5086 cleanups [cleanupcnt - 1] = w;
5087
5088 /* cleanup watchers should never keep a refcount on the loop */
5089 ev_unref (EV_A);
5090 EV_FREQUENT_CHECK;
5091}
5092
5093void
5094ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
5095{
5096 clear_pending (EV_A_ (W)w);
5097 if (ecb_expect_false (!ev_is_active (w)))
5098 return;
5099
5100 EV_FREQUENT_CHECK;
5101 ev_ref (EV_A);
5102
5103 {
5104 int active = ev_active (w);
5105
5106 cleanups [active - 1] = cleanups [--cleanupcnt];
5107 ev_active (cleanups [active - 1]) = active;
5108 }
5109
5110 ev_stop (EV_A_ (W)w);
5111
5112 EV_FREQUENT_CHECK;
5113}
5114#endif
5115
3574#if EV_ASYNC_ENABLE 5116#if EV_ASYNC_ENABLE
3575void 5117void
3576ev_async_start (EV_P_ ev_async *w) 5118ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
3577{ 5119{
3578 if (expect_false (ev_is_active (w))) 5120 if (ecb_expect_false (ev_is_active (w)))
3579 return; 5121 return;
3580 5122
5123 w->sent = 0;
5124
3581 evpipe_init (EV_A); 5125 evpipe_init (EV_A);
3582 5126
3583 EV_FREQUENT_CHECK; 5127 EV_FREQUENT_CHECK;
3584 5128
3585 ev_start (EV_A_ (W)w, ++asynccnt); 5129 ev_start (EV_A_ (W)w, ++asynccnt);
3586 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 5130 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
3587 asyncs [asynccnt - 1] = w; 5131 asyncs [asynccnt - 1] = w;
3588 5132
3589 EV_FREQUENT_CHECK; 5133 EV_FREQUENT_CHECK;
3590} 5134}
3591 5135
3592void 5136void
3593ev_async_stop (EV_P_ ev_async *w) 5137ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
3594{ 5138{
3595 clear_pending (EV_A_ (W)w); 5139 clear_pending (EV_A_ (W)w);
3596 if (expect_false (!ev_is_active (w))) 5140 if (ecb_expect_false (!ev_is_active (w)))
3597 return; 5141 return;
3598 5142
3599 EV_FREQUENT_CHECK; 5143 EV_FREQUENT_CHECK;
3600 5144
3601 { 5145 {
… …
3609 5153
3610 EV_FREQUENT_CHECK; 5154 EV_FREQUENT_CHECK;
3611} 5155}
3612 5156
3613void 5157void
3614ev_async_send (EV_P_ ev_async *w) 5158ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
3615{ 5159{
3616 w->sent = 1; 5160 w->sent = 1;
3617 evpipe_write (EV_A_ &async_pending); 5161 evpipe_write (EV_A_ &async_pending);
3618} 5162}
3619#endif 5163#endif
… …
3656 5200
3657 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5201 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3658} 5202}
3659 5203
3660void 5204void
3661ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 5205ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
3662{ 5206{
3663 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5207 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3664
3665 if (expect_false (!once))
3666 {
3667 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3668 return;
3669 }
3670 5208
3671 once->cb = cb; 5209 once->cb = cb;
3672 once->arg = arg; 5210 once->arg = arg;
3673 5211
3674 ev_init (&once->io, once_cb_io); 5212 ev_init (&once->io, once_cb_io);
… …
3687} 5225}
3688 5226
3689/*****************************************************************************/ 5227/*****************************************************************************/
3690 5228
3691#if EV_WALK_ENABLE 5229#if EV_WALK_ENABLE
5230ecb_cold
3692void 5231void
3693ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 5232ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
3694{ 5233{
3695 int i, j; 5234 int i, j;
3696 ev_watcher_list *wl, *wn; 5235 ev_watcher_list *wl, *wn;
3697 5236
3698 if (types & (EV_IO | EV_EMBED)) 5237 if (types & (EV_IO | EV_EMBED))
… …
3741 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 5280 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3742#endif 5281#endif
3743 5282
3744#if EV_IDLE_ENABLE 5283#if EV_IDLE_ENABLE
3745 if (types & EV_IDLE) 5284 if (types & EV_IDLE)
3746 for (j = NUMPRI; i--; ) 5285 for (j = NUMPRI; j--; )
3747 for (i = idlecnt [j]; i--; ) 5286 for (i = idlecnt [j]; i--; )
3748 cb (EV_A_ EV_IDLE, idles [j][i]); 5287 cb (EV_A_ EV_IDLE, idles [j][i]);
3749#endif 5288#endif
3750 5289
3751#if EV_FORK_ENABLE 5290#if EV_FORK_ENABLE
… …
3804 5343
3805#if EV_MULTIPLICITY 5344#if EV_MULTIPLICITY
3806 #include "ev_wrap.h" 5345 #include "ev_wrap.h"
3807#endif 5346#endif
3808 5347
3809#ifdef __cplusplus
3810}
3811#endif
3812

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