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Comparing libev/ev.c (file contents):
Revision 1.348 by root, Fri Oct 15 22:48:25 2010 UTC vs.
Revision 1.507 by root, Thu Jul 11 08:22:54 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
… …
111# define EV_USE_EPOLL EV_FEATURE_BACKENDS 113# define EV_USE_EPOLL EV_FEATURE_BACKENDS
112# endif 114# endif
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
118# endif
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
116# endif 127# endif
117 128
118# if HAVE_KQUEUE && HAVE_SYS_EVENT_H 129# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
119# ifndef EV_USE_KQUEUE 130# ifndef EV_USE_KQUEUE
120# define EV_USE_KQUEUE EV_FEATURE_BACKENDS 131# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
… …
160# define EV_USE_EVENTFD 0 171# define EV_USE_EVENTFD 0
161# endif 172# endif
162 173
163#endif 174#endif
164 175
165#include <math.h> 176/* OS X, in its infinite idiocy, actually HARDCODES
177 * a limit of 1024 into their select. Where people have brains,
178 * OS X engineers apparently have a vacuum. Or maybe they were
179 * ordered to have a vacuum, or they do anything for money.
180 * This might help. Or not.
181 * Note that this must be defined early, as other include files
182 * will rely on this define as well.
183 */
184#define _DARWIN_UNLIMITED_SELECT 1
185
166#include <stdlib.h> 186#include <stdlib.h>
167#include <string.h> 187#include <string.h>
168#include <fcntl.h> 188#include <fcntl.h>
169#include <stddef.h> 189#include <stddef.h>
170 190
… …
180 200
181#ifdef EV_H 201#ifdef EV_H
182# include EV_H 202# include EV_H
183#else 203#else
184# include "ev.h" 204# include "ev.h"
205#endif
206
207#if EV_NO_THREADS
208# undef EV_NO_SMP
209# define EV_NO_SMP 1
210# undef ECB_NO_THREADS
211# define ECB_NO_THREADS 1
212#endif
213#if EV_NO_SMP
214# undef EV_NO_SMP
215# define ECB_NO_SMP 1
185#endif 216#endif
186 217
187#ifndef _WIN32 218#ifndef _WIN32
188# include <sys/time.h> 219# include <sys/time.h>
189# include <sys/wait.h> 220# include <sys/wait.h>
190# include <unistd.h> 221# include <unistd.h>
191#else 222#else
192# include <io.h> 223# include <io.h>
193# define WIN32_LEAN_AND_MEAN 224# define WIN32_LEAN_AND_MEAN
225# include <winsock2.h>
194# include <windows.h> 226# include <windows.h>
195# ifndef EV_SELECT_IS_WINSOCKET 227# ifndef EV_SELECT_IS_WINSOCKET
196# define EV_SELECT_IS_WINSOCKET 1 228# define EV_SELECT_IS_WINSOCKET 1
197# endif 229# endif
198# undef EV_AVOID_STDIO 230# undef EV_AVOID_STDIO
199#endif 231#endif
200 232
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 */ 233/* this block tries to deduce configuration from header-defined symbols and defaults */
210 234
211/* try to deduce the maximum number of signals on this platform */ 235/* try to deduce the maximum number of signals on this platform */
212#if defined (EV_NSIG) 236#if defined EV_NSIG
213/* use what's provided */ 237/* use what's provided */
214#elif defined (NSIG) 238#elif defined NSIG
215# define EV_NSIG (NSIG) 239# define EV_NSIG (NSIG)
216#elif defined(_NSIG) 240#elif defined _NSIG
217# define EV_NSIG (_NSIG) 241# define EV_NSIG (_NSIG)
218#elif defined (SIGMAX) 242#elif defined SIGMAX
219# define EV_NSIG (SIGMAX+1) 243# define EV_NSIG (SIGMAX+1)
220#elif defined (SIG_MAX) 244#elif defined SIG_MAX
221# define EV_NSIG (SIG_MAX+1) 245# define EV_NSIG (SIG_MAX+1)
222#elif defined (_SIG_MAX) 246#elif defined _SIG_MAX
223# define EV_NSIG (_SIG_MAX+1) 247# define EV_NSIG (_SIG_MAX+1)
224#elif defined (MAXSIG) 248#elif defined MAXSIG
225# define EV_NSIG (MAXSIG+1) 249# define EV_NSIG (MAXSIG+1)
226#elif defined (MAX_SIG) 250#elif defined MAX_SIG
227# define EV_NSIG (MAX_SIG+1) 251# define EV_NSIG (MAX_SIG+1)
228#elif defined (SIGARRAYSIZE) 252#elif defined SIGARRAYSIZE
229# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ 253# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
230#elif defined (_sys_nsig) 254#elif defined _sys_nsig
231# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 255# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
232#else 256#else
233# error "unable to find value for NSIG, please report" 257# define EV_NSIG (8 * sizeof (sigset_t) + 1)
234/* to make it compile regardless, just remove the above line, */ 258#endif
235/* but consider reporting it, too! :) */ 259
236# define EV_NSIG 65 260#ifndef EV_USE_FLOOR
261# define EV_USE_FLOOR 0
237#endif 262#endif
238 263
239#ifndef EV_USE_CLOCK_SYSCALL 264#ifndef EV_USE_CLOCK_SYSCALL
240# if __linux && __GLIBC__ >= 2 265# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
241# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS 266# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
242# else 267# else
243# define EV_USE_CLOCK_SYSCALL 0 268# define EV_USE_CLOCK_SYSCALL 0
244# endif 269# endif
245#endif 270#endif
246 271
272#if !(_POSIX_TIMERS > 0)
273# ifndef EV_USE_MONOTONIC
274# define EV_USE_MONOTONIC 0
275# endif
276# ifndef EV_USE_REALTIME
277# define EV_USE_REALTIME 0
278# endif
279#endif
280
247#ifndef EV_USE_MONOTONIC 281#ifndef EV_USE_MONOTONIC
248# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 282# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
249# define EV_USE_MONOTONIC EV_FEATURE_OS 283# define EV_USE_MONOTONIC EV_FEATURE_OS
250# else 284# else
251# define EV_USE_MONOTONIC 0 285# define EV_USE_MONOTONIC 0
252# endif 286# endif
253#endif 287#endif
… …
290 324
291#ifndef EV_USE_PORT 325#ifndef EV_USE_PORT
292# define EV_USE_PORT 0 326# define EV_USE_PORT 0
293#endif 327#endif
294 328
329#ifndef EV_USE_LINUXAIO
330# if __linux /* libev currently assumes linux/aio_abi.h is always available on linux */
331# define EV_USE_LINUXAIO 1
332# else
333# define EV_USE_LINUXAIO 0
334# endif
335#endif
336
337#ifndef EV_USE_IOURING
338# if __linux
339# define EV_USE_IOURING 0
340# else
341# define EV_USE_IOURING 0
342# endif
343#endif
344
295#ifndef EV_USE_INOTIFY 345#ifndef EV_USE_INOTIFY
296# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 346# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
297# define EV_USE_INOTIFY EV_FEATURE_OS 347# define EV_USE_INOTIFY EV_FEATURE_OS
298# else 348# else
299# define EV_USE_INOTIFY 0 349# define EV_USE_INOTIFY 0
… …
340 390
341#ifndef EV_HEAP_CACHE_AT 391#ifndef EV_HEAP_CACHE_AT
342# define EV_HEAP_CACHE_AT EV_FEATURE_DATA 392# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
343#endif 393#endif
344 394
395#ifdef __ANDROID__
396/* supposedly, android doesn't typedef fd_mask */
397# undef EV_USE_SELECT
398# define EV_USE_SELECT 0
399/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
400# undef EV_USE_CLOCK_SYSCALL
401# define EV_USE_CLOCK_SYSCALL 0
402#endif
403
404/* aix's poll.h seems to cause lots of trouble */
405#ifdef _AIX
406/* AIX has a completely broken poll.h header */
407# undef EV_USE_POLL
408# define EV_USE_POLL 0
409#endif
410
345/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 411/* 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. */ 412/* which makes programs even slower. might work on other unices, too. */
347#if EV_USE_CLOCK_SYSCALL 413#if EV_USE_CLOCK_SYSCALL
348# include <syscall.h> 414# include <sys/syscall.h>
349# ifdef SYS_clock_gettime 415# ifdef SYS_clock_gettime
350# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 416# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
351# undef EV_USE_MONOTONIC 417# undef EV_USE_MONOTONIC
352# define EV_USE_MONOTONIC 1 418# define EV_USE_MONOTONIC 1
419# define EV_NEED_SYSCALL 1
353# else 420# else
354# undef EV_USE_CLOCK_SYSCALL 421# undef EV_USE_CLOCK_SYSCALL
355# define EV_USE_CLOCK_SYSCALL 0 422# define EV_USE_CLOCK_SYSCALL 0
356# endif 423# endif
357#endif 424#endif
358 425
359/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 426/* this block fixes any misconfiguration where we know we run into trouble otherwise */
360 427
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 428#ifndef CLOCK_MONOTONIC
368# undef EV_USE_MONOTONIC 429# undef EV_USE_MONOTONIC
369# define EV_USE_MONOTONIC 0 430# define EV_USE_MONOTONIC 0
370#endif 431#endif
371 432
… …
378# undef EV_USE_INOTIFY 439# undef EV_USE_INOTIFY
379# define EV_USE_INOTIFY 0 440# define EV_USE_INOTIFY 0
380#endif 441#endif
381 442
382#if !EV_USE_NANOSLEEP 443#if !EV_USE_NANOSLEEP
383# ifndef _WIN32 444/* hp-ux has it in sys/time.h, which we unconditionally include above */
445# if !defined _WIN32 && !defined __hpux
384# include <sys/select.h> 446# include <sys/select.h>
385# endif 447# endif
386#endif 448#endif
387 449
450#if EV_USE_LINUXAIO
451# include <sys/syscall.h>
452# if SYS_io_getevents && EV_USE_EPOLL /* linuxaio backend requires epoll backend */
453# define EV_NEED_SYSCALL 1
454# else
455# undef EV_USE_LINUXAIO
456# define EV_USE_LINUXAIO 0
457# endif
458#endif
459
460#if EV_USE_IOURING
461# include <sys/syscall.h>
462# if !SYS_io_uring_setup && __linux && !__alpha
463# define SYS_io_uring_setup 425
464# define SYS_io_uring_enter 426
465# define SYS_io_uring_wregister 427
466# endif
467# if SYS_io_uring_setup && EV_USE_EPOLL /* iouring backend requires epoll backend */
468# define EV_NEED_SYSCALL 1
469# else
470# undef EV_USE_IOURING
471# define EV_USE_IOURING 0
472# endif
473#endif
474
388#if EV_USE_INOTIFY 475#if EV_USE_INOTIFY
389# include <sys/utsname.h>
390# include <sys/statfs.h> 476# include <sys/statfs.h>
391# include <sys/inotify.h> 477# include <sys/inotify.h>
392/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 478/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
393# ifndef IN_DONT_FOLLOW 479# ifndef IN_DONT_FOLLOW
394# undef EV_USE_INOTIFY 480# undef EV_USE_INOTIFY
395# define EV_USE_INOTIFY 0 481# define EV_USE_INOTIFY 0
396# endif 482# endif
397#endif
398
399#if EV_SELECT_IS_WINSOCKET
400# include <winsock.h>
401#endif 483#endif
402 484
403#if EV_USE_EVENTFD 485#if EV_USE_EVENTFD
404/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 486/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
405# include <stdint.h> 487# include <stdint.h>
… …
411# define EFD_CLOEXEC O_CLOEXEC 493# define EFD_CLOEXEC O_CLOEXEC
412# else 494# else
413# define EFD_CLOEXEC 02000000 495# define EFD_CLOEXEC 02000000
414# endif 496# endif
415# endif 497# endif
416# ifdef __cplusplus
417extern "C" {
418# endif
419int (eventfd) (unsigned int initval, int flags); 498EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
420# ifdef __cplusplus
421}
422# endif
423#endif 499#endif
424 500
425#if EV_USE_SIGNALFD 501#if EV_USE_SIGNALFD
426/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 502/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
427# include <stdint.h> 503# include <stdint.h>
… …
433# define SFD_CLOEXEC O_CLOEXEC 509# define SFD_CLOEXEC O_CLOEXEC
434# else 510# else
435# define SFD_CLOEXEC 02000000 511# define SFD_CLOEXEC 02000000
436# endif 512# endif
437# endif 513# endif
438# ifdef __cplusplus
439extern "C" {
440# endif
441int signalfd (int fd, const sigset_t *mask, int flags); 514EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
442 515
443struct signalfd_siginfo 516struct signalfd_siginfo
444{ 517{
445 uint32_t ssi_signo; 518 uint32_t ssi_signo;
446 char pad[128 - sizeof (uint32_t)]; 519 char pad[128 - sizeof (uint32_t)];
447}; 520};
448# ifdef __cplusplus
449}
450# endif 521#endif
451#endif
452 522
453/**/ 523/*****************************************************************************/
454 524
455#if EV_VERIFY >= 3 525#if EV_VERIFY >= 3
456# define EV_FREQUENT_CHECK ev_verify (EV_A) 526# define EV_FREQUENT_CHECK ev_verify (EV_A)
457#else 527#else
458# define EV_FREQUENT_CHECK do { } while (0) 528# define EV_FREQUENT_CHECK do { } while (0)
459#endif 529#endif
460 530
461/* 531/*
462 * This is used to avoid floating point rounding problems. 532 * This is used to work around floating point rounding problems.
463 * It is added to ev_rt_now when scheduling periodics
464 * to ensure progress, time-wise, even when rounding
465 * errors are against us.
466 * This value is good at least till the year 4000. 533 * This value is good at least till the year 4000.
467 * Better solutions welcome.
468 */ 534 */
469#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 535#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
536/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
470 537
471#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 538#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
472#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 539#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
473 540
541/* find a portable timestamp that is "always" in the future but fits into time_t.
542 * this is quite hard, and we are mostly guessing - we handle 32 bit signed/unsigned time_t,
543 * and sizes larger than 32 bit, and maybe the unlikely floating point time_t */
544#define EV_TSTAMP_HUGE \
545 (sizeof (time_t) >= 8 ? 10000000000000. \
546 : 0 < (time_t)4294967295 ? 4294967295. \
547 : 2147483647.) \
548
549#define EV_TS_TO_MS(a) a * 1e3 + 0.9999
550#define EV_TS_FROM_USEC(us) us * 1e-6
474#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0) 551#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
475#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0) 552#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
553#define EV_TV_GET(tv) ((tv).tv_sec + (tv).tv_usec * 1e-6)
554#define EV_TS_GET(ts) ((ts).tv_sec + (ts).tv_nsec * 1e-9)
476 555
556/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
557/* ECB.H BEGIN */
558/*
559 * libecb - http://software.schmorp.de/pkg/libecb
560 *
561 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
562 * Copyright (©) 2011 Emanuele Giaquinta
563 * All rights reserved.
564 *
565 * Redistribution and use in source and binary forms, with or without modifica-
566 * tion, are permitted provided that the following conditions are met:
567 *
568 * 1. Redistributions of source code must retain the above copyright notice,
569 * this list of conditions and the following disclaimer.
570 *
571 * 2. Redistributions in binary form must reproduce the above copyright
572 * notice, this list of conditions and the following disclaimer in the
573 * documentation and/or other materials provided with the distribution.
574 *
575 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
576 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
577 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
578 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
579 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
580 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
581 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
582 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
583 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
584 * OF THE POSSIBILITY OF SUCH DAMAGE.
585 *
586 * Alternatively, the contents of this file may be used under the terms of
587 * the GNU General Public License ("GPL") version 2 or any later version,
588 * in which case the provisions of the GPL are applicable instead of
589 * the above. If you wish to allow the use of your version of this file
590 * only under the terms of the GPL and not to allow others to use your
591 * version of this file under the BSD license, indicate your decision
592 * by deleting the provisions above and replace them with the notice
593 * and other provisions required by the GPL. If you do not delete the
594 * provisions above, a recipient may use your version of this file under
595 * either the BSD or the GPL.
596 */
597
598#ifndef ECB_H
599#define ECB_H
600
601/* 16 bits major, 16 bits minor */
602#define ECB_VERSION 0x00010006
603
604#ifdef _WIN32
605 typedef signed char int8_t;
606 typedef unsigned char uint8_t;
607 typedef signed short int16_t;
608 typedef unsigned short uint16_t;
609 typedef signed int int32_t;
610 typedef unsigned int uint32_t;
477#if __GNUC__ >= 4 611 #if __GNUC__
478# define expect(expr,value) __builtin_expect ((expr),(value)) 612 typedef signed long long int64_t;
479# define noinline __attribute__ ((noinline)) 613 typedef unsigned long long uint64_t;
614 #else /* _MSC_VER || __BORLANDC__ */
615 typedef signed __int64 int64_t;
616 typedef unsigned __int64 uint64_t;
617 #endif
618 #ifdef _WIN64
619 #define ECB_PTRSIZE 8
620 typedef uint64_t uintptr_t;
621 typedef int64_t intptr_t;
622 #else
623 #define ECB_PTRSIZE 4
624 typedef uint32_t uintptr_t;
625 typedef int32_t intptr_t;
626 #endif
480#else 627#else
481# define expect(expr,value) (expr) 628 #include <inttypes.h>
482# define noinline 629 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
483# if __STDC_VERSION__ < 199901L && __GNUC__ < 2 630 #define ECB_PTRSIZE 8
484# define inline 631 #else
632 #define ECB_PTRSIZE 4
633 #endif
485# endif 634#endif
635
636#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
637#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
638
639/* work around x32 idiocy by defining proper macros */
640#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
641 #if _ILP32
642 #define ECB_AMD64_X32 1
643 #else
644 #define ECB_AMD64 1
486#endif 645 #endif
646#endif
487 647
648/* many compilers define _GNUC_ to some versions but then only implement
649 * what their idiot authors think are the "more important" extensions,
650 * causing enormous grief in return for some better fake benchmark numbers.
651 * or so.
652 * we try to detect these and simply assume they are not gcc - if they have
653 * an issue with that they should have done it right in the first place.
654 */
655#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
656 #define ECB_GCC_VERSION(major,minor) 0
657#else
658 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
659#endif
660
661#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
662
663#if __clang__ && defined __has_builtin
664 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
665#else
666 #define ECB_CLANG_BUILTIN(x) 0
667#endif
668
669#if __clang__ && defined __has_extension
670 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
671#else
672 #define ECB_CLANG_EXTENSION(x) 0
673#endif
674
675#define ECB_CPP (__cplusplus+0)
676#define ECB_CPP11 (__cplusplus >= 201103L)
677#define ECB_CPP14 (__cplusplus >= 201402L)
678#define ECB_CPP17 (__cplusplus >= 201703L)
679
680#if ECB_CPP
681 #define ECB_C 0
682 #define ECB_STDC_VERSION 0
683#else
684 #define ECB_C 1
685 #define ECB_STDC_VERSION __STDC_VERSION__
686#endif
687
688#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
689#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
690#define ECB_C17 (ECB_STDC_VERSION >= 201710L)
691
692#if ECB_CPP
693 #define ECB_EXTERN_C extern "C"
694 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
695 #define ECB_EXTERN_C_END }
696#else
697 #define ECB_EXTERN_C extern
698 #define ECB_EXTERN_C_BEG
699 #define ECB_EXTERN_C_END
700#endif
701
702/*****************************************************************************/
703
704/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
705/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
706
707#if ECB_NO_THREADS
708 #define ECB_NO_SMP 1
709#endif
710
711#if ECB_NO_SMP
712 #define ECB_MEMORY_FENCE do { } while (0)
713#endif
714
715/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
716#if __xlC__ && ECB_CPP
717 #include <builtins.h>
718#endif
719
720#if 1400 <= _MSC_VER
721 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
722#endif
723
724#ifndef ECB_MEMORY_FENCE
725 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
726 #define ECB_MEMORY_FENCE_RELAXED __asm__ __volatile__ ("" : : : "memory")
727 #if __i386 || __i386__
728 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
729 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
730 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
731 #elif ECB_GCC_AMD64
732 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
733 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
734 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
735 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
736 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
737 #elif defined __ARM_ARCH_2__ \
738 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
739 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
740 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
741 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
742 || defined __ARM_ARCH_5TEJ__
743 /* should not need any, unless running old code on newer cpu - arm doesn't support that */
744 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
745 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
746 || defined __ARM_ARCH_6T2__
747 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
748 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
749 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
750 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
751 #elif __aarch64__
752 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
753 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
754 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
755 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
756 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
757 #elif defined __s390__ || defined __s390x__
758 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
759 #elif defined __mips__
760 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
761 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
762 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
763 #elif defined __alpha__
764 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
765 #elif defined __hppa__
766 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
767 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
768 #elif defined __ia64__
769 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
770 #elif defined __m68k__
771 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
772 #elif defined __m88k__
773 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
774 #elif defined __sh__
775 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
776 #endif
777 #endif
778#endif
779
780#ifndef ECB_MEMORY_FENCE
781 #if ECB_GCC_VERSION(4,7)
782 /* see comment below (stdatomic.h) about the C11 memory model. */
783 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
784 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
785 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
786 #define ECB_MEMORY_FENCE_RELAXED __atomic_thread_fence (__ATOMIC_RELAXED)
787
788 #elif ECB_CLANG_EXTENSION(c_atomic)
789 /* see comment below (stdatomic.h) about the C11 memory model. */
790 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
791 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
792 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
793 #define ECB_MEMORY_FENCE_RELAXED __c11_atomic_thread_fence (__ATOMIC_RELAXED)
794
795 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
796 #define ECB_MEMORY_FENCE __sync_synchronize ()
797 #elif _MSC_VER >= 1500 /* VC++ 2008 */
798 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
799 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
800 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
801 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
802 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
803 #elif _MSC_VER >= 1400 /* VC++ 2005 */
804 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
805 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
806 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
807 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
808 #elif defined _WIN32
809 #include <WinNT.h>
810 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
811 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
812 #include <mbarrier.h>
813 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
814 #define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier ()
815 #define ECB_MEMORY_FENCE_RELEASE __machine_rel_barrier ()
816 #define ECB_MEMORY_FENCE_RELAXED __compiler_barrier ()
817 #elif __xlC__
818 #define ECB_MEMORY_FENCE __sync ()
819 #endif
820#endif
821
822#ifndef ECB_MEMORY_FENCE
823 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
824 /* we assume that these memory fences work on all variables/all memory accesses, */
825 /* not just C11 atomics and atomic accesses */
826 #include <stdatomic.h>
827 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
828 #define ECB_MEMORY_FENCE_ACQUIRE atomic_thread_fence (memory_order_acquire)
829 #define ECB_MEMORY_FENCE_RELEASE atomic_thread_fence (memory_order_release)
830 #endif
831#endif
832
833#ifndef ECB_MEMORY_FENCE
834 #if !ECB_AVOID_PTHREADS
835 /*
836 * if you get undefined symbol references to pthread_mutex_lock,
837 * or failure to find pthread.h, then you should implement
838 * the ECB_MEMORY_FENCE operations for your cpu/compiler
839 * OR provide pthread.h and link against the posix thread library
840 * of your system.
841 */
842 #include <pthread.h>
843 #define ECB_NEEDS_PTHREADS 1
844 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
845
846 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
847 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
848 #endif
849#endif
850
851#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
852 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
853#endif
854
855#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
856 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
857#endif
858
859#if !defined ECB_MEMORY_FENCE_RELAXED && defined ECB_MEMORY_FENCE
860 #define ECB_MEMORY_FENCE_RELAXED ECB_MEMORY_FENCE /* very heavy-handed */
861#endif
862
863/*****************************************************************************/
864
865#if ECB_CPP
866 #define ecb_inline static inline
867#elif ECB_GCC_VERSION(2,5)
868 #define ecb_inline static __inline__
869#elif ECB_C99
870 #define ecb_inline static inline
871#else
872 #define ecb_inline static
873#endif
874
875#if ECB_GCC_VERSION(3,3)
876 #define ecb_restrict __restrict__
877#elif ECB_C99
878 #define ecb_restrict restrict
879#else
880 #define ecb_restrict
881#endif
882
883typedef int ecb_bool;
884
885#define ECB_CONCAT_(a, b) a ## b
886#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
887#define ECB_STRINGIFY_(a) # a
888#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
889#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
890
891#define ecb_function_ ecb_inline
892
893#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
894 #define ecb_attribute(attrlist) __attribute__ (attrlist)
895#else
896 #define ecb_attribute(attrlist)
897#endif
898
899#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
900 #define ecb_is_constant(expr) __builtin_constant_p (expr)
901#else
902 /* possible C11 impl for integral types
903 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
904 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
905
906 #define ecb_is_constant(expr) 0
907#endif
908
909#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
910 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
911#else
912 #define ecb_expect(expr,value) (expr)
913#endif
914
915#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
916 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
917#else
918 #define ecb_prefetch(addr,rw,locality)
919#endif
920
921/* no emulation for ecb_decltype */
922#if ECB_CPP11
923 // older implementations might have problems with decltype(x)::type, work around it
924 template<class T> struct ecb_decltype_t { typedef T type; };
925 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
926#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
927 #define ecb_decltype(x) __typeof__ (x)
928#endif
929
930#if _MSC_VER >= 1300
931 #define ecb_deprecated __declspec (deprecated)
932#else
933 #define ecb_deprecated ecb_attribute ((__deprecated__))
934#endif
935
936#if _MSC_VER >= 1500
937 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
938#elif ECB_GCC_VERSION(4,5)
939 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
940#else
941 #define ecb_deprecated_message(msg) ecb_deprecated
942#endif
943
944#if _MSC_VER >= 1400
945 #define ecb_noinline __declspec (noinline)
946#else
947 #define ecb_noinline ecb_attribute ((__noinline__))
948#endif
949
950#define ecb_unused ecb_attribute ((__unused__))
951#define ecb_const ecb_attribute ((__const__))
952#define ecb_pure ecb_attribute ((__pure__))
953
954#if ECB_C11 || __IBMC_NORETURN
955 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
956 #define ecb_noreturn _Noreturn
957#elif ECB_CPP11
958 #define ecb_noreturn [[noreturn]]
959#elif _MSC_VER >= 1200
960 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
961 #define ecb_noreturn __declspec (noreturn)
962#else
963 #define ecb_noreturn ecb_attribute ((__noreturn__))
964#endif
965
966#if ECB_GCC_VERSION(4,3)
967 #define ecb_artificial ecb_attribute ((__artificial__))
968 #define ecb_hot ecb_attribute ((__hot__))
969 #define ecb_cold ecb_attribute ((__cold__))
970#else
971 #define ecb_artificial
972 #define ecb_hot
973 #define ecb_cold
974#endif
975
976/* put around conditional expressions if you are very sure that the */
977/* expression is mostly true or mostly false. note that these return */
978/* booleans, not the expression. */
488#define expect_false(expr) expect ((expr) != 0, 0) 979#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
489#define expect_true(expr) expect ((expr) != 0, 1) 980#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
981/* for compatibility to the rest of the world */
982#define ecb_likely(expr) ecb_expect_true (expr)
983#define ecb_unlikely(expr) ecb_expect_false (expr)
984
985/* count trailing zero bits and count # of one bits */
986#if ECB_GCC_VERSION(3,4) \
987 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
988 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
989 && ECB_CLANG_BUILTIN(__builtin_popcount))
990 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
991 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
992 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
993 #define ecb_ctz32(x) __builtin_ctz (x)
994 #define ecb_ctz64(x) __builtin_ctzll (x)
995 #define ecb_popcount32(x) __builtin_popcount (x)
996 /* no popcountll */
997#else
998 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
999 ecb_function_ ecb_const int
1000 ecb_ctz32 (uint32_t x)
1001 {
1002#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1003 unsigned long r;
1004 _BitScanForward (&r, x);
1005 return (int)r;
1006#else
1007 int r = 0;
1008
1009 x &= ~x + 1; /* this isolates the lowest bit */
1010
1011#if ECB_branchless_on_i386
1012 r += !!(x & 0xaaaaaaaa) << 0;
1013 r += !!(x & 0xcccccccc) << 1;
1014 r += !!(x & 0xf0f0f0f0) << 2;
1015 r += !!(x & 0xff00ff00) << 3;
1016 r += !!(x & 0xffff0000) << 4;
1017#else
1018 if (x & 0xaaaaaaaa) r += 1;
1019 if (x & 0xcccccccc) r += 2;
1020 if (x & 0xf0f0f0f0) r += 4;
1021 if (x & 0xff00ff00) r += 8;
1022 if (x & 0xffff0000) r += 16;
1023#endif
1024
1025 return r;
1026#endif
1027 }
1028
1029 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
1030 ecb_function_ ecb_const int
1031 ecb_ctz64 (uint64_t x)
1032 {
1033#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1034 unsigned long r;
1035 _BitScanForward64 (&r, x);
1036 return (int)r;
1037#else
1038 int shift = x & 0xffffffff ? 0 : 32;
1039 return ecb_ctz32 (x >> shift) + shift;
1040#endif
1041 }
1042
1043 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
1044 ecb_function_ ecb_const int
1045 ecb_popcount32 (uint32_t x)
1046 {
1047 x -= (x >> 1) & 0x55555555;
1048 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
1049 x = ((x >> 4) + x) & 0x0f0f0f0f;
1050 x *= 0x01010101;
1051
1052 return x >> 24;
1053 }
1054
1055 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
1056 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
1057 {
1058#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1059 unsigned long r;
1060 _BitScanReverse (&r, x);
1061 return (int)r;
1062#else
1063 int r = 0;
1064
1065 if (x >> 16) { x >>= 16; r += 16; }
1066 if (x >> 8) { x >>= 8; r += 8; }
1067 if (x >> 4) { x >>= 4; r += 4; }
1068 if (x >> 2) { x >>= 2; r += 2; }
1069 if (x >> 1) { r += 1; }
1070
1071 return r;
1072#endif
1073 }
1074
1075 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
1076 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
1077 {
1078#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1079 unsigned long r;
1080 _BitScanReverse64 (&r, x);
1081 return (int)r;
1082#else
1083 int r = 0;
1084
1085 if (x >> 32) { x >>= 32; r += 32; }
1086
1087 return r + ecb_ld32 (x);
1088#endif
1089 }
1090#endif
1091
1092ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
1093ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
1094ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
1095ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
1096
1097ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
1098ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
1099{
1100 return ( (x * 0x0802U & 0x22110U)
1101 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
1102}
1103
1104ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
1105ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
1106{
1107 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
1108 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
1109 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
1110 x = ( x >> 8 ) | ( x << 8);
1111
1112 return x;
1113}
1114
1115ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
1116ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
1117{
1118 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
1119 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
1120 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
1121 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
1122 x = ( x >> 16 ) | ( x << 16);
1123
1124 return x;
1125}
1126
1127/* popcount64 is only available on 64 bit cpus as gcc builtin */
1128/* so for this version we are lazy */
1129ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
1130ecb_function_ ecb_const int
1131ecb_popcount64 (uint64_t x)
1132{
1133 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
1134}
1135
1136ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
1137ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
1138ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
1139ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
1140ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
1141ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
1142ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
1143ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
1144
1145ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
1146ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
1147ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
1148ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
1149ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
1150ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
1151ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
1152ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
1153
1154#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1155 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1156 #define ecb_bswap16(x) __builtin_bswap16 (x)
1157 #else
1158 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1159 #endif
1160 #define ecb_bswap32(x) __builtin_bswap32 (x)
1161 #define ecb_bswap64(x) __builtin_bswap64 (x)
1162#elif _MSC_VER
1163 #include <stdlib.h>
1164 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1165 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1166 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
1167#else
1168 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
1169 ecb_function_ ecb_const uint16_t
1170 ecb_bswap16 (uint16_t x)
1171 {
1172 return ecb_rotl16 (x, 8);
1173 }
1174
1175 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
1176 ecb_function_ ecb_const uint32_t
1177 ecb_bswap32 (uint32_t x)
1178 {
1179 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
1180 }
1181
1182 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
1183 ecb_function_ ecb_const uint64_t
1184 ecb_bswap64 (uint64_t x)
1185 {
1186 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
1187 }
1188#endif
1189
1190#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
1191 #define ecb_unreachable() __builtin_unreachable ()
1192#else
1193 /* this seems to work fine, but gcc always emits a warning for it :/ */
1194 ecb_inline ecb_noreturn void ecb_unreachable (void);
1195 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
1196#endif
1197
1198/* try to tell the compiler that some condition is definitely true */
1199#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
1200
1201ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
1202ecb_inline ecb_const uint32_t
1203ecb_byteorder_helper (void)
1204{
1205 /* the union code still generates code under pressure in gcc, */
1206 /* but less than using pointers, and always seems to */
1207 /* successfully return a constant. */
1208 /* the reason why we have this horrible preprocessor mess */
1209 /* is to avoid it in all cases, at least on common architectures */
1210 /* or when using a recent enough gcc version (>= 4.6) */
1211#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1212 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1213 #define ECB_LITTLE_ENDIAN 1
1214 return 0x44332211;
1215#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1216 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1217 #define ECB_BIG_ENDIAN 1
1218 return 0x11223344;
1219#else
1220 union
1221 {
1222 uint8_t c[4];
1223 uint32_t u;
1224 } u = { 0x11, 0x22, 0x33, 0x44 };
1225 return u.u;
1226#endif
1227}
1228
1229ecb_inline ecb_const ecb_bool ecb_big_endian (void);
1230ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
1231ecb_inline ecb_const ecb_bool ecb_little_endian (void);
1232ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
1233
1234#if ECB_GCC_VERSION(3,0) || ECB_C99
1235 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1236#else
1237 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1238#endif
1239
1240#if ECB_CPP
1241 template<typename T>
1242 static inline T ecb_div_rd (T val, T div)
1243 {
1244 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1245 }
1246 template<typename T>
1247 static inline T ecb_div_ru (T val, T div)
1248 {
1249 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1250 }
1251#else
1252 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1253 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1254#endif
1255
1256#if ecb_cplusplus_does_not_suck
1257 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1258 template<typename T, int N>
1259 static inline int ecb_array_length (const T (&arr)[N])
1260 {
1261 return N;
1262 }
1263#else
1264 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1265#endif
1266
1267ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1268ecb_function_ ecb_const uint32_t
1269ecb_binary16_to_binary32 (uint32_t x)
1270{
1271 unsigned int s = (x & 0x8000) << (31 - 15);
1272 int e = (x >> 10) & 0x001f;
1273 unsigned int m = x & 0x03ff;
1274
1275 if (ecb_expect_false (e == 31))
1276 /* infinity or NaN */
1277 e = 255 - (127 - 15);
1278 else if (ecb_expect_false (!e))
1279 {
1280 if (ecb_expect_true (!m))
1281 /* zero, handled by code below by forcing e to 0 */
1282 e = 0 - (127 - 15);
1283 else
1284 {
1285 /* subnormal, renormalise */
1286 unsigned int s = 10 - ecb_ld32 (m);
1287
1288 m = (m << s) & 0x3ff; /* mask implicit bit */
1289 e -= s - 1;
1290 }
1291 }
1292
1293 /* e and m now are normalised, or zero, (or inf or nan) */
1294 e += 127 - 15;
1295
1296 return s | (e << 23) | (m << (23 - 10));
1297}
1298
1299ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1300ecb_function_ ecb_const uint16_t
1301ecb_binary32_to_binary16 (uint32_t x)
1302{
1303 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1304 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1305 unsigned int m = x & 0x007fffff;
1306
1307 x &= 0x7fffffff;
1308
1309 /* if it's within range of binary16 normals, use fast path */
1310 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1311 {
1312 /* mantissa round-to-even */
1313 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1314
1315 /* handle overflow */
1316 if (ecb_expect_false (m >= 0x00800000))
1317 {
1318 m >>= 1;
1319 e += 1;
1320 }
1321
1322 return s | (e << 10) | (m >> (23 - 10));
1323 }
1324
1325 /* handle large numbers and infinity */
1326 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1327 return s | 0x7c00;
1328
1329 /* handle zero, subnormals and small numbers */
1330 if (ecb_expect_true (x < 0x38800000))
1331 {
1332 /* zero */
1333 if (ecb_expect_true (!x))
1334 return s;
1335
1336 /* handle subnormals */
1337
1338 /* too small, will be zero */
1339 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1340 return s;
1341
1342 m |= 0x00800000; /* make implicit bit explicit */
1343
1344 /* very tricky - we need to round to the nearest e (+10) bit value */
1345 {
1346 unsigned int bits = 14 - e;
1347 unsigned int half = (1 << (bits - 1)) - 1;
1348 unsigned int even = (m >> bits) & 1;
1349
1350 /* if this overflows, we will end up with a normalised number */
1351 m = (m + half + even) >> bits;
1352 }
1353
1354 return s | m;
1355 }
1356
1357 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1358 m >>= 13;
1359
1360 return s | 0x7c00 | m | !m;
1361}
1362
1363/*******************************************************************************/
1364/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1365
1366/* basically, everything uses "ieee pure-endian" floating point numbers */
1367/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1368#if 0 \
1369 || __i386 || __i386__ \
1370 || ECB_GCC_AMD64 \
1371 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1372 || defined __s390__ || defined __s390x__ \
1373 || defined __mips__ \
1374 || defined __alpha__ \
1375 || defined __hppa__ \
1376 || defined __ia64__ \
1377 || defined __m68k__ \
1378 || defined __m88k__ \
1379 || defined __sh__ \
1380 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1381 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1382 || defined __aarch64__
1383 #define ECB_STDFP 1
1384 #include <string.h> /* for memcpy */
1385#else
1386 #define ECB_STDFP 0
1387#endif
1388
1389#ifndef ECB_NO_LIBM
1390
1391 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1392
1393 /* only the oldest of old doesn't have this one. solaris. */
1394 #ifdef INFINITY
1395 #define ECB_INFINITY INFINITY
1396 #else
1397 #define ECB_INFINITY HUGE_VAL
1398 #endif
1399
1400 #ifdef NAN
1401 #define ECB_NAN NAN
1402 #else
1403 #define ECB_NAN ECB_INFINITY
1404 #endif
1405
1406 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1407 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1408 #define ecb_frexpf(x,e) frexpf ((x), (e))
1409 #else
1410 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1411 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1412 #endif
1413
1414 /* convert a float to ieee single/binary32 */
1415 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1416 ecb_function_ ecb_const uint32_t
1417 ecb_float_to_binary32 (float x)
1418 {
1419 uint32_t r;
1420
1421 #if ECB_STDFP
1422 memcpy (&r, &x, 4);
1423 #else
1424 /* slow emulation, works for anything but -0 */
1425 uint32_t m;
1426 int e;
1427
1428 if (x == 0e0f ) return 0x00000000U;
1429 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1430 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1431 if (x != x ) return 0x7fbfffffU;
1432
1433 m = ecb_frexpf (x, &e) * 0x1000000U;
1434
1435 r = m & 0x80000000U;
1436
1437 if (r)
1438 m = -m;
1439
1440 if (e <= -126)
1441 {
1442 m &= 0xffffffU;
1443 m >>= (-125 - e);
1444 e = -126;
1445 }
1446
1447 r |= (e + 126) << 23;
1448 r |= m & 0x7fffffU;
1449 #endif
1450
1451 return r;
1452 }
1453
1454 /* converts an ieee single/binary32 to a float */
1455 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1456 ecb_function_ ecb_const float
1457 ecb_binary32_to_float (uint32_t x)
1458 {
1459 float r;
1460
1461 #if ECB_STDFP
1462 memcpy (&r, &x, 4);
1463 #else
1464 /* emulation, only works for normals and subnormals and +0 */
1465 int neg = x >> 31;
1466 int e = (x >> 23) & 0xffU;
1467
1468 x &= 0x7fffffU;
1469
1470 if (e)
1471 x |= 0x800000U;
1472 else
1473 e = 1;
1474
1475 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1476 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1477
1478 r = neg ? -r : r;
1479 #endif
1480
1481 return r;
1482 }
1483
1484 /* convert a double to ieee double/binary64 */
1485 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1486 ecb_function_ ecb_const uint64_t
1487 ecb_double_to_binary64 (double x)
1488 {
1489 uint64_t r;
1490
1491 #if ECB_STDFP
1492 memcpy (&r, &x, 8);
1493 #else
1494 /* slow emulation, works for anything but -0 */
1495 uint64_t m;
1496 int e;
1497
1498 if (x == 0e0 ) return 0x0000000000000000U;
1499 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1500 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1501 if (x != x ) return 0X7ff7ffffffffffffU;
1502
1503 m = frexp (x, &e) * 0x20000000000000U;
1504
1505 r = m & 0x8000000000000000;;
1506
1507 if (r)
1508 m = -m;
1509
1510 if (e <= -1022)
1511 {
1512 m &= 0x1fffffffffffffU;
1513 m >>= (-1021 - e);
1514 e = -1022;
1515 }
1516
1517 r |= ((uint64_t)(e + 1022)) << 52;
1518 r |= m & 0xfffffffffffffU;
1519 #endif
1520
1521 return r;
1522 }
1523
1524 /* converts an ieee double/binary64 to a double */
1525 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1526 ecb_function_ ecb_const double
1527 ecb_binary64_to_double (uint64_t x)
1528 {
1529 double r;
1530
1531 #if ECB_STDFP
1532 memcpy (&r, &x, 8);
1533 #else
1534 /* emulation, only works for normals and subnormals and +0 */
1535 int neg = x >> 63;
1536 int e = (x >> 52) & 0x7ffU;
1537
1538 x &= 0xfffffffffffffU;
1539
1540 if (e)
1541 x |= 0x10000000000000U;
1542 else
1543 e = 1;
1544
1545 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1546 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1547
1548 r = neg ? -r : r;
1549 #endif
1550
1551 return r;
1552 }
1553
1554 /* convert a float to ieee half/binary16 */
1555 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1556 ecb_function_ ecb_const uint16_t
1557 ecb_float_to_binary16 (float x)
1558 {
1559 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1560 }
1561
1562 /* convert an ieee half/binary16 to float */
1563 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1564 ecb_function_ ecb_const float
1565 ecb_binary16_to_float (uint16_t x)
1566 {
1567 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1568 }
1569
1570#endif
1571
1572#endif
1573
1574/* ECB.H END */
1575
1576#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1577/* if your architecture doesn't need memory fences, e.g. because it is
1578 * single-cpu/core, or if you use libev in a project that doesn't use libev
1579 * from multiple threads, then you can define ECB_NO_THREADS when compiling
1580 * libev, in which cases the memory fences become nops.
1581 * alternatively, you can remove this #error and link against libpthread,
1582 * which will then provide the memory fences.
1583 */
1584# error "memory fences not defined for your architecture, please report"
1585#endif
1586
1587#ifndef ECB_MEMORY_FENCE
1588# define ECB_MEMORY_FENCE do { } while (0)
1589# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1590# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1591#endif
1592
490#define inline_size static inline 1593#define inline_size ecb_inline
491 1594
492#if EV_FEATURE_CODE 1595#if EV_FEATURE_CODE
493# define inline_speed static inline 1596# define inline_speed ecb_inline
494#else 1597#else
495# define inline_speed static noinline 1598# define inline_speed ecb_noinline static
496#endif 1599#endif
1600
1601/*****************************************************************************/
1602/* raw syscall wrappers */
1603
1604#if EV_NEED_SYSCALL
1605
1606#include <sys/syscall.h>
1607
1608/*
1609 * define some syscall wrappers for common architectures
1610 * this is mostly for nice looks during debugging, not performance.
1611 * our syscalls return < 0, not == -1, on error. which is good
1612 * enough for linux aio.
1613 * TODO: arm is also common nowadays, maybe even mips and x86
1614 * TODO: after implementing this, it suddenly looks like overkill, but its hard to remove...
1615 */
1616#if __GNUC__ && __linux && ECB_AMD64 && !defined __OPTIMIZE_SIZE__
1617 /* the costly errno access probably kills this for size optimisation */
1618
1619 #define ev_syscall(nr,narg,arg1,arg2,arg3,arg4,arg5,arg6) \
1620 ({ \
1621 long res; \
1622 register unsigned long r6 __asm__ ("r9" ); \
1623 register unsigned long r5 __asm__ ("r8" ); \
1624 register unsigned long r4 __asm__ ("r10"); \
1625 register unsigned long r3 __asm__ ("rdx"); \
1626 register unsigned long r2 __asm__ ("rsi"); \
1627 register unsigned long r1 __asm__ ("rdi"); \
1628 if (narg >= 6) r6 = (unsigned long)(arg6); \
1629 if (narg >= 5) r5 = (unsigned long)(arg5); \
1630 if (narg >= 4) r4 = (unsigned long)(arg4); \
1631 if (narg >= 3) r3 = (unsigned long)(arg3); \
1632 if (narg >= 2) r2 = (unsigned long)(arg2); \
1633 if (narg >= 1) r1 = (unsigned long)(arg1); \
1634 __asm__ __volatile__ ( \
1635 "syscall\n\t" \
1636 : "=a" (res) \
1637 : "0" (nr), "r" (r1), "r" (r2), "r" (r3), "r" (r4), "r" (r5) \
1638 : "cc", "r11", "cx", "memory"); \
1639 errno = -res; \
1640 res; \
1641 })
1642
1643#endif
1644
1645#ifdef ev_syscall
1646 #define ev_syscall0(nr) ev_syscall (nr, 0, 0, 0, 0, 0, 0, 0)
1647 #define ev_syscall1(nr,arg1) ev_syscall (nr, 1, arg1, 0, 0, 0, 0, 0)
1648 #define ev_syscall2(nr,arg1,arg2) ev_syscall (nr, 2, arg1, arg2, 0, 0, 0, 0)
1649 #define ev_syscall3(nr,arg1,arg2,arg3) ev_syscall (nr, 3, arg1, arg2, arg3, 0, 0, 0)
1650 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) ev_syscall (nr, 3, arg1, arg2, arg3, arg4, 0, 0)
1651 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) ev_syscall (nr, 5, arg1, arg2, arg3, arg4, arg5, 0)
1652 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) ev_syscall (nr, 6, arg1, arg2, arg3, arg4, arg5,arg6)
1653#else
1654 #define ev_syscall0(nr) syscall (nr)
1655 #define ev_syscall1(nr,arg1) syscall (nr, arg1)
1656 #define ev_syscall2(nr,arg1,arg2) syscall (nr, arg1, arg2)
1657 #define ev_syscall3(nr,arg1,arg2,arg3) syscall (nr, arg1, arg2, arg3)
1658 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) syscall (nr, arg1, arg2, arg3, arg4)
1659 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) syscall (nr, arg1, arg2, arg3, arg4, arg5)
1660 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) syscall (nr, arg1, arg2, arg3, arg4, arg5,arg6)
1661#endif
1662
1663#endif
1664
1665/*****************************************************************************/
497 1666
498#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1667#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
499 1668
500#if EV_MINPRI == EV_MAXPRI 1669#if EV_MINPRI == EV_MAXPRI
501# define ABSPRI(w) (((W)w), 0) 1670# define ABSPRI(w) (((W)w), 0)
502#else 1671#else
503# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1672# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
504#endif 1673#endif
505 1674
506#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1675#define EMPTY /* required for microsofts broken pseudo-c compiler */
507#define EMPTY2(a,b) /* used to suppress some warnings */
508 1676
509typedef ev_watcher *W; 1677typedef ev_watcher *W;
510typedef ev_watcher_list *WL; 1678typedef ev_watcher_list *WL;
511typedef ev_watcher_time *WT; 1679typedef ev_watcher_time *WT;
512 1680
… …
537# include "ev_win32.c" 1705# include "ev_win32.c"
538#endif 1706#endif
539 1707
540/*****************************************************************************/ 1708/*****************************************************************************/
541 1709
1710#if EV_USE_LINUXAIO
1711# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
1712#endif
1713
1714/* define a suitable floor function (only used by periodics atm) */
1715
1716#if EV_USE_FLOOR
1717# include <math.h>
1718# define ev_floor(v) floor (v)
1719#else
1720
1721#include <float.h>
1722
1723/* a floor() replacement function, should be independent of ev_tstamp type */
1724ecb_noinline
1725static ev_tstamp
1726ev_floor (ev_tstamp v)
1727{
1728 /* the choice of shift factor is not terribly important */
1729#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1730 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1731#else
1732 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1733#endif
1734
1735 /* special treatment for negative arguments */
1736 if (ecb_expect_false (v < 0.))
1737 {
1738 ev_tstamp f = -ev_floor (-v);
1739
1740 return f - (f == v ? 0 : 1);
1741 }
1742
1743 /* argument too large for an unsigned long? then reduce it */
1744 if (ecb_expect_false (v >= shift))
1745 {
1746 ev_tstamp f;
1747
1748 if (v == v - 1.)
1749 return v; /* very large numbers are assumed to be integer */
1750
1751 f = shift * ev_floor (v * (1. / shift));
1752 return f + ev_floor (v - f);
1753 }
1754
1755 /* fits into an unsigned long */
1756 return (unsigned long)v;
1757}
1758
1759#endif
1760
1761/*****************************************************************************/
1762
1763#ifdef __linux
1764# include <sys/utsname.h>
1765#endif
1766
1767ecb_noinline ecb_cold
1768static unsigned int
1769ev_linux_version (void)
1770{
1771#ifdef __linux
1772 unsigned int v = 0;
1773 struct utsname buf;
1774 int i;
1775 char *p = buf.release;
1776
1777 if (uname (&buf))
1778 return 0;
1779
1780 for (i = 3+1; --i; )
1781 {
1782 unsigned int c = 0;
1783
1784 for (;;)
1785 {
1786 if (*p >= '0' && *p <= '9')
1787 c = c * 10 + *p++ - '0';
1788 else
1789 {
1790 p += *p == '.';
1791 break;
1792 }
1793 }
1794
1795 v = (v << 8) | c;
1796 }
1797
1798 return v;
1799#else
1800 return 0;
1801#endif
1802}
1803
1804/*****************************************************************************/
1805
542#if EV_AVOID_STDIO 1806#if EV_AVOID_STDIO
543static void noinline 1807ecb_noinline ecb_cold
1808static void
544ev_printerr (const char *msg) 1809ev_printerr (const char *msg)
545{ 1810{
546 write (STDERR_FILENO, msg, strlen (msg)); 1811 write (STDERR_FILENO, msg, strlen (msg));
547} 1812}
548#endif 1813#endif
549 1814
550static void (*syserr_cb)(const char *msg); 1815static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
551 1816
1817ecb_cold
552void 1818void
553ev_set_syserr_cb (void (*cb)(const char *msg)) 1819ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
554{ 1820{
555 syserr_cb = cb; 1821 syserr_cb = cb;
556} 1822}
557 1823
558static void noinline 1824ecb_noinline ecb_cold
1825static void
559ev_syserr (const char *msg) 1826ev_syserr (const char *msg)
560{ 1827{
561 if (!msg) 1828 if (!msg)
562 msg = "(libev) system error"; 1829 msg = "(libev) system error";
563 1830
564 if (syserr_cb) 1831 if (syserr_cb)
565 syserr_cb (msg); 1832 syserr_cb (msg);
566 else 1833 else
567 { 1834 {
568#if EV_AVOID_STDIO 1835#if EV_AVOID_STDIO
569 const char *err = strerror (errno);
570
571 ev_printerr (msg); 1836 ev_printerr (msg);
572 ev_printerr (": "); 1837 ev_printerr (": ");
573 ev_printerr (err); 1838 ev_printerr (strerror (errno));
574 ev_printerr ("\n"); 1839 ev_printerr ("\n");
575#else 1840#else
576 perror (msg); 1841 perror (msg);
577#endif 1842#endif
578 abort (); 1843 abort ();
579 } 1844 }
580} 1845}
581 1846
582static void * 1847static void *
583ev_realloc_emul (void *ptr, long size) 1848ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
584{ 1849{
585#if __GLIBC__
586 return realloc (ptr, size);
587#else
588 /* some systems, notably openbsd and darwin, fail to properly 1850 /* some systems, notably openbsd and darwin, fail to properly
589 * implement realloc (x, 0) (as required by both ansi c-89 and 1851 * implement realloc (x, 0) (as required by both ansi c-89 and
590 * the single unix specification, so work around them here. 1852 * the single unix specification, so work around them here.
1853 * recently, also (at least) fedora and debian started breaking it,
1854 * despite documenting it otherwise.
591 */ 1855 */
592 1856
593 if (size) 1857 if (size)
594 return realloc (ptr, size); 1858 return realloc (ptr, size);
595 1859
596 free (ptr); 1860 free (ptr);
597 return 0; 1861 return 0;
598#endif
599} 1862}
600 1863
601static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1864static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
602 1865
1866ecb_cold
603void 1867void
604ev_set_allocator (void *(*cb)(void *ptr, long size)) 1868ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
605{ 1869{
606 alloc = cb; 1870 alloc = cb;
607} 1871}
608 1872
609inline_speed void * 1873inline_speed void *
… …
612 ptr = alloc (ptr, size); 1876 ptr = alloc (ptr, size);
613 1877
614 if (!ptr && size) 1878 if (!ptr && size)
615 { 1879 {
616#if EV_AVOID_STDIO 1880#if EV_AVOID_STDIO
617 ev_printerr ("libev: memory allocation failed, aborting.\n"); 1881 ev_printerr ("(libev) memory allocation failed, aborting.\n");
618#else 1882#else
619 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1883 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
620#endif 1884#endif
621 abort (); 1885 abort ();
622 } 1886 }
623 1887
624 return ptr; 1888 return ptr;
… …
636typedef struct 1900typedef struct
637{ 1901{
638 WL head; 1902 WL head;
639 unsigned char events; /* the events watched for */ 1903 unsigned char events; /* the events watched for */
640 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */ 1904 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
641 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1905 unsigned char emask; /* some backends store the actual kernel mask in here */
642 unsigned char unused; 1906 unsigned char eflags; /* flags field for use by backends */
643#if EV_USE_EPOLL 1907#if EV_USE_EPOLL
644 unsigned int egen; /* generation counter to counter epoll bugs */ 1908 unsigned int egen; /* generation counter to counter epoll bugs */
645#endif 1909#endif
646#if EV_SELECT_IS_WINSOCKET 1910#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
647 SOCKET handle; 1911 SOCKET handle;
1912#endif
1913#if EV_USE_IOCP
1914 OVERLAPPED or, ow;
648#endif 1915#endif
649} ANFD; 1916} ANFD;
650 1917
651/* stores the pending event set for a given watcher */ 1918/* stores the pending event set for a given watcher */
652typedef struct 1919typedef struct
… …
694 #undef VAR 1961 #undef VAR
695 }; 1962 };
696 #include "ev_wrap.h" 1963 #include "ev_wrap.h"
697 1964
698 static struct ev_loop default_loop_struct; 1965 static struct ev_loop default_loop_struct;
699 struct ev_loop *ev_default_loop_ptr; 1966 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
700 1967
701#else 1968#else
702 1969
703 ev_tstamp ev_rt_now; 1970 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
704 #define VAR(name,decl) static decl; 1971 #define VAR(name,decl) static decl;
705 #include "ev_vars.h" 1972 #include "ev_vars.h"
706 #undef VAR 1973 #undef VAR
707 1974
708 static int ev_default_loop_ptr; 1975 static int ev_default_loop_ptr;
709 1976
710#endif 1977#endif
711 1978
712#if EV_FEATURE_API 1979#if EV_FEATURE_API
713# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 1980# define EV_RELEASE_CB if (ecb_expect_false (release_cb)) release_cb (EV_A)
714# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 1981# define EV_ACQUIRE_CB if (ecb_expect_false (acquire_cb)) acquire_cb (EV_A)
715# define EV_INVOKE_PENDING invoke_cb (EV_A) 1982# define EV_INVOKE_PENDING invoke_cb (EV_A)
716#else 1983#else
717# define EV_RELEASE_CB (void)0 1984# define EV_RELEASE_CB (void)0
718# define EV_ACQUIRE_CB (void)0 1985# define EV_ACQUIRE_CB (void)0
719# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1986# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
720#endif 1987#endif
721 1988
722#define EVUNLOOP_RECURSE 0x80 1989#define EVBREAK_RECURSE 0x80
723 1990
724/*****************************************************************************/ 1991/*****************************************************************************/
725 1992
726#ifndef EV_HAVE_EV_TIME 1993#ifndef EV_HAVE_EV_TIME
727ev_tstamp 1994ev_tstamp
728ev_time (void) 1995ev_time (void) EV_NOEXCEPT
729{ 1996{
730#if EV_USE_REALTIME 1997#if EV_USE_REALTIME
731 if (expect_true (have_realtime)) 1998 if (ecb_expect_true (have_realtime))
732 { 1999 {
733 struct timespec ts; 2000 struct timespec ts;
734 clock_gettime (CLOCK_REALTIME, &ts); 2001 clock_gettime (CLOCK_REALTIME, &ts);
735 return ts.tv_sec + ts.tv_nsec * 1e-9; 2002 return EV_TS_GET (ts);
736 } 2003 }
737#endif 2004#endif
738 2005
739 struct timeval tv; 2006 struct timeval tv;
740 gettimeofday (&tv, 0); 2007 gettimeofday (&tv, 0);
741 return tv.tv_sec + tv.tv_usec * 1e-6; 2008 return EV_TV_GET (tv);
742} 2009}
743#endif 2010#endif
744 2011
745inline_size ev_tstamp 2012inline_size ev_tstamp
746get_clock (void) 2013get_clock (void)
747{ 2014{
748#if EV_USE_MONOTONIC 2015#if EV_USE_MONOTONIC
749 if (expect_true (have_monotonic)) 2016 if (ecb_expect_true (have_monotonic))
750 { 2017 {
751 struct timespec ts; 2018 struct timespec ts;
752 clock_gettime (CLOCK_MONOTONIC, &ts); 2019 clock_gettime (CLOCK_MONOTONIC, &ts);
753 return ts.tv_sec + ts.tv_nsec * 1e-9; 2020 return EV_TS_GET (ts);
754 } 2021 }
755#endif 2022#endif
756 2023
757 return ev_time (); 2024 return ev_time ();
758} 2025}
759 2026
760#if EV_MULTIPLICITY 2027#if EV_MULTIPLICITY
761ev_tstamp 2028ev_tstamp
762ev_now (EV_P) 2029ev_now (EV_P) EV_NOEXCEPT
763{ 2030{
764 return ev_rt_now; 2031 return ev_rt_now;
765} 2032}
766#endif 2033#endif
767 2034
768void 2035void
769ev_sleep (ev_tstamp delay) 2036ev_sleep (ev_tstamp delay) EV_NOEXCEPT
770{ 2037{
771 if (delay > 0.) 2038 if (delay > 0.)
772 { 2039 {
773#if EV_USE_NANOSLEEP 2040#if EV_USE_NANOSLEEP
774 struct timespec ts; 2041 struct timespec ts;
775 2042
776 EV_TS_SET (ts, delay); 2043 EV_TS_SET (ts, delay);
777 nanosleep (&ts, 0); 2044 nanosleep (&ts, 0);
778#elif defined(_WIN32) 2045#elif defined _WIN32
2046 /* maybe this should round up, as ms is very low resolution */
2047 /* compared to select (µs) or nanosleep (ns) */
779 Sleep ((unsigned long)(delay * 1e3)); 2048 Sleep ((unsigned long)(EV_TS_TO_MS (delay)));
780#else 2049#else
781 struct timeval tv; 2050 struct timeval tv;
782 2051
783 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 2052 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
784 /* something not guaranteed by newer posix versions, but guaranteed */ 2053 /* something not guaranteed by newer posix versions, but guaranteed */
785 /* by older ones */ 2054 /* by older ones */
786 EV_TS_SET (tv, delay); 2055 EV_TV_SET (tv, delay);
787 select (0, 0, 0, 0, &tv); 2056 select (0, 0, 0, 0, &tv);
788#endif 2057#endif
789 } 2058 }
790} 2059}
791 2060
… …
802 2071
803 do 2072 do
804 ncur <<= 1; 2073 ncur <<= 1;
805 while (cnt > ncur); 2074 while (cnt > ncur);
806 2075
807 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 2076 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
808 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 2077 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
809 { 2078 {
810 ncur *= elem; 2079 ncur *= elem;
811 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 2080 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
812 ncur = ncur - sizeof (void *) * 4; 2081 ncur = ncur - sizeof (void *) * 4;
… …
814 } 2083 }
815 2084
816 return ncur; 2085 return ncur;
817} 2086}
818 2087
819static noinline void * 2088ecb_noinline ecb_cold
2089static void *
820array_realloc (int elem, void *base, int *cur, int cnt) 2090array_realloc (int elem, void *base, int *cur, int cnt)
821{ 2091{
822 *cur = array_nextsize (elem, *cur, cnt); 2092 *cur = array_nextsize (elem, *cur, cnt);
823 return ev_realloc (base, elem * *cur); 2093 return ev_realloc (base, elem * *cur);
824} 2094}
825 2095
2096#define array_needsize_noinit(base,offset,count)
2097
826#define array_init_zero(base,count) \ 2098#define array_needsize_zerofill(base,offset,count) \
827 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 2099 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
828 2100
829#define array_needsize(type,base,cur,cnt,init) \ 2101#define array_needsize(type,base,cur,cnt,init) \
830 if (expect_false ((cnt) > (cur))) \ 2102 if (ecb_expect_false ((cnt) > (cur))) \
831 { \ 2103 { \
832 int ocur_ = (cur); \ 2104 ecb_unused int ocur_ = (cur); \
833 (base) = (type *)array_realloc \ 2105 (base) = (type *)array_realloc \
834 (sizeof (type), (base), &(cur), (cnt)); \ 2106 (sizeof (type), (base), &(cur), (cnt)); \
835 init ((base) + (ocur_), (cur) - ocur_); \ 2107 init ((base), ocur_, ((cur) - ocur_)); \
836 } 2108 }
837 2109
838#if 0 2110#if 0
839#define array_slim(type,stem) \ 2111#define array_slim(type,stem) \
840 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2112 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
… …
849 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 2121 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
850 2122
851/*****************************************************************************/ 2123/*****************************************************************************/
852 2124
853/* dummy callback for pending events */ 2125/* dummy callback for pending events */
854static void noinline 2126ecb_noinline
2127static void
855pendingcb (EV_P_ ev_prepare *w, int revents) 2128pendingcb (EV_P_ ev_prepare *w, int revents)
856{ 2129{
857} 2130}
858 2131
859void noinline 2132ecb_noinline
2133void
860ev_feed_event (EV_P_ void *w, int revents) 2134ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
861{ 2135{
862 W w_ = (W)w; 2136 W w_ = (W)w;
863 int pri = ABSPRI (w_); 2137 int pri = ABSPRI (w_);
864 2138
865 if (expect_false (w_->pending)) 2139 if (ecb_expect_false (w_->pending))
866 pendings [pri][w_->pending - 1].events |= revents; 2140 pendings [pri][w_->pending - 1].events |= revents;
867 else 2141 else
868 { 2142 {
869 w_->pending = ++pendingcnt [pri]; 2143 w_->pending = ++pendingcnt [pri];
870 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2144 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
871 pendings [pri][w_->pending - 1].w = w_; 2145 pendings [pri][w_->pending - 1].w = w_;
872 pendings [pri][w_->pending - 1].events = revents; 2146 pendings [pri][w_->pending - 1].events = revents;
873 } 2147 }
2148
2149 pendingpri = NUMPRI - 1;
874} 2150}
875 2151
876inline_speed void 2152inline_speed void
877feed_reverse (EV_P_ W w) 2153feed_reverse (EV_P_ W w)
878{ 2154{
879 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2155 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
880 rfeeds [rfeedcnt++] = w; 2156 rfeeds [rfeedcnt++] = w;
881} 2157}
882 2158
883inline_size void 2159inline_size void
884feed_reverse_done (EV_P_ int revents) 2160feed_reverse_done (EV_P_ int revents)
… …
919inline_speed void 2195inline_speed void
920fd_event (EV_P_ int fd, int revents) 2196fd_event (EV_P_ int fd, int revents)
921{ 2197{
922 ANFD *anfd = anfds + fd; 2198 ANFD *anfd = anfds + fd;
923 2199
924 if (expect_true (!anfd->reify)) 2200 if (ecb_expect_true (!anfd->reify))
925 fd_event_nocheck (EV_A_ fd, revents); 2201 fd_event_nocheck (EV_A_ fd, revents);
926} 2202}
927 2203
928void 2204void
929ev_feed_fd_event (EV_P_ int fd, int revents) 2205ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
930{ 2206{
931 if (fd >= 0 && fd < anfdmax) 2207 if (fd >= 0 && fd < anfdmax)
932 fd_event_nocheck (EV_A_ fd, revents); 2208 fd_event_nocheck (EV_A_ fd, revents);
933} 2209}
934 2210
… …
937inline_size void 2213inline_size void
938fd_reify (EV_P) 2214fd_reify (EV_P)
939{ 2215{
940 int i; 2216 int i;
941 2217
2218#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
2219 for (i = 0; i < fdchangecnt; ++i)
2220 {
2221 int fd = fdchanges [i];
2222 ANFD *anfd = anfds + fd;
2223
2224 if (anfd->reify & EV__IOFDSET && anfd->head)
2225 {
2226 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
2227
2228 if (handle != anfd->handle)
2229 {
2230 unsigned long arg;
2231
2232 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
2233
2234 /* handle changed, but fd didn't - we need to do it in two steps */
2235 backend_modify (EV_A_ fd, anfd->events, 0);
2236 anfd->events = 0;
2237 anfd->handle = handle;
2238 }
2239 }
2240 }
2241#endif
2242
942 for (i = 0; i < fdchangecnt; ++i) 2243 for (i = 0; i < fdchangecnt; ++i)
943 { 2244 {
944 int fd = fdchanges [i]; 2245 int fd = fdchanges [i];
945 ANFD *anfd = anfds + fd; 2246 ANFD *anfd = anfds + fd;
946 ev_io *w; 2247 ev_io *w;
947 2248
948 unsigned char events = 0; 2249 unsigned char o_events = anfd->events;
2250 unsigned char o_reify = anfd->reify;
949 2251
950 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2252 anfd->reify = 0;
951 events |= (unsigned char)w->events;
952 2253
953#if EV_SELECT_IS_WINSOCKET 2254 /*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
954 if (events)
955 { 2255 {
956 unsigned long arg; 2256 anfd->events = 0;
957 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 2257
958 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 2258 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
2259 anfd->events |= (unsigned char)w->events;
2260
2261 if (o_events != anfd->events)
2262 o_reify = EV__IOFDSET; /* actually |= */
959 } 2263 }
960#endif
961 2264
962 { 2265 if (o_reify & EV__IOFDSET)
963 unsigned char o_events = anfd->events;
964 unsigned char o_reify = anfd->reify;
965
966 anfd->reify = 0;
967 anfd->events = events;
968
969 if (o_events != events || o_reify & EV__IOFDSET)
970 backend_modify (EV_A_ fd, o_events, events); 2266 backend_modify (EV_A_ fd, o_events, anfd->events);
971 }
972 } 2267 }
973 2268
974 fdchangecnt = 0; 2269 fdchangecnt = 0;
975} 2270}
976 2271
977/* something about the given fd changed */ 2272/* something about the given fd changed */
978inline_size void 2273inline_size
2274void
979fd_change (EV_P_ int fd, int flags) 2275fd_change (EV_P_ int fd, int flags)
980{ 2276{
981 unsigned char reify = anfds [fd].reify; 2277 unsigned char reify = anfds [fd].reify;
982 anfds [fd].reify |= flags; 2278 anfds [fd].reify |= flags;
983 2279
984 if (expect_true (!reify)) 2280 if (ecb_expect_true (!reify))
985 { 2281 {
986 ++fdchangecnt; 2282 ++fdchangecnt;
987 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2283 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
988 fdchanges [fdchangecnt - 1] = fd; 2284 fdchanges [fdchangecnt - 1] = fd;
989 } 2285 }
990} 2286}
991 2287
992/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2288/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
993inline_speed void 2289inline_speed ecb_cold void
994fd_kill (EV_P_ int fd) 2290fd_kill (EV_P_ int fd)
995{ 2291{
996 ev_io *w; 2292 ev_io *w;
997 2293
998 while ((w = (ev_io *)anfds [fd].head)) 2294 while ((w = (ev_io *)anfds [fd].head))
… …
1001 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2297 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1002 } 2298 }
1003} 2299}
1004 2300
1005/* check whether the given fd is actually valid, for error recovery */ 2301/* check whether the given fd is actually valid, for error recovery */
1006inline_size int 2302inline_size ecb_cold int
1007fd_valid (int fd) 2303fd_valid (int fd)
1008{ 2304{
1009#ifdef _WIN32 2305#ifdef _WIN32
1010 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2306 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1011#else 2307#else
1012 return fcntl (fd, F_GETFD) != -1; 2308 return fcntl (fd, F_GETFD) != -1;
1013#endif 2309#endif
1014} 2310}
1015 2311
1016/* called on EBADF to verify fds */ 2312/* called on EBADF to verify fds */
1017static void noinline 2313ecb_noinline ecb_cold
2314static void
1018fd_ebadf (EV_P) 2315fd_ebadf (EV_P)
1019{ 2316{
1020 int fd; 2317 int fd;
1021 2318
1022 for (fd = 0; fd < anfdmax; ++fd) 2319 for (fd = 0; fd < anfdmax; ++fd)
… …
1024 if (!fd_valid (fd) && errno == EBADF) 2321 if (!fd_valid (fd) && errno == EBADF)
1025 fd_kill (EV_A_ fd); 2322 fd_kill (EV_A_ fd);
1026} 2323}
1027 2324
1028/* called on ENOMEM in select/poll to kill some fds and retry */ 2325/* called on ENOMEM in select/poll to kill some fds and retry */
1029static void noinline 2326ecb_noinline ecb_cold
2327static void
1030fd_enomem (EV_P) 2328fd_enomem (EV_P)
1031{ 2329{
1032 int fd; 2330 int fd;
1033 2331
1034 for (fd = anfdmax; fd--; ) 2332 for (fd = anfdmax; fd--; )
… …
1038 break; 2336 break;
1039 } 2337 }
1040} 2338}
1041 2339
1042/* usually called after fork if backend needs to re-arm all fds from scratch */ 2340/* usually called after fork if backend needs to re-arm all fds from scratch */
1043static void noinline 2341ecb_noinline
2342static void
1044fd_rearm_all (EV_P) 2343fd_rearm_all (EV_P)
1045{ 2344{
1046 int fd; 2345 int fd;
1047 2346
1048 for (fd = 0; fd < anfdmax; ++fd) 2347 for (fd = 0; fd < anfdmax; ++fd)
… …
1101 ev_tstamp minat; 2400 ev_tstamp minat;
1102 ANHE *minpos; 2401 ANHE *minpos;
1103 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; 2402 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
1104 2403
1105 /* find minimum child */ 2404 /* find minimum child */
1106 if (expect_true (pos + DHEAP - 1 < E)) 2405 if (ecb_expect_true (pos + DHEAP - 1 < E))
1107 { 2406 {
1108 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2407 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1109 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2408 if ( minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1110 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2409 if ( minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1111 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2410 if ( minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1112 } 2411 }
1113 else if (pos < E) 2412 else if (pos < E)
1114 { 2413 {
1115 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2414 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1116 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2415 if (pos + 1 < E && minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1117 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2416 if (pos + 2 < E && minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1118 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2417 if (pos + 3 < E && minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1119 } 2418 }
1120 else 2419 else
1121 break; 2420 break;
1122 2421
1123 if (ANHE_at (he) <= minat) 2422 if (ANHE_at (he) <= minat)
… …
1131 2430
1132 heap [k] = he; 2431 heap [k] = he;
1133 ev_active (ANHE_w (he)) = k; 2432 ev_active (ANHE_w (he)) = k;
1134} 2433}
1135 2434
1136#else /* 4HEAP */ 2435#else /* not 4HEAP */
1137 2436
1138#define HEAP0 1 2437#define HEAP0 1
1139#define HPARENT(k) ((k) >> 1) 2438#define HPARENT(k) ((k) >> 1)
1140#define UPHEAP_DONE(p,k) (!(p)) 2439#define UPHEAP_DONE(p,k) (!(p))
1141 2440
… …
1229 2528
1230/*****************************************************************************/ 2529/*****************************************************************************/
1231 2530
1232#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2531#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1233 2532
1234static void noinline 2533ecb_noinline ecb_cold
2534static void
1235evpipe_init (EV_P) 2535evpipe_init (EV_P)
1236{ 2536{
1237 if (!ev_is_active (&pipe_w)) 2537 if (!ev_is_active (&pipe_w))
1238 { 2538 {
2539 int fds [2];
2540
1239# if EV_USE_EVENTFD 2541# if EV_USE_EVENTFD
2542 fds [0] = -1;
1240 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2543 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1241 if (evfd < 0 && errno == EINVAL) 2544 if (fds [1] < 0 && errno == EINVAL)
1242 evfd = eventfd (0, 0); 2545 fds [1] = eventfd (0, 0);
1243 2546
1244 if (evfd >= 0) 2547 if (fds [1] < 0)
2548# endif
1245 { 2549 {
2550 while (pipe (fds))
2551 ev_syserr ("(libev) error creating signal/async pipe");
2552
2553 fd_intern (fds [0]);
2554 }
2555
1246 evpipe [0] = -1; 2556 evpipe [0] = fds [0];
1247 fd_intern (evfd); /* doing it twice doesn't hurt */ 2557
1248 ev_io_set (&pipe_w, evfd, EV_READ); 2558 if (evpipe [1] < 0)
2559 evpipe [1] = fds [1]; /* first call, set write fd */
2560 else
2561 {
2562 /* on subsequent calls, do not change evpipe [1] */
2563 /* so that evpipe_write can always rely on its value. */
2564 /* this branch does not do anything sensible on windows, */
2565 /* so must not be executed on windows */
2566
2567 dup2 (fds [1], evpipe [1]);
2568 close (fds [1]);
2569 }
2570
2571 fd_intern (evpipe [1]);
2572
2573 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2574 ev_io_start (EV_A_ &pipe_w);
2575 ev_unref (EV_A); /* watcher should not keep loop alive */
2576 }
2577}
2578
2579inline_speed void
2580evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2581{
2582 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2583
2584 if (ecb_expect_true (*flag))
2585 return;
2586
2587 *flag = 1;
2588 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2589
2590 pipe_write_skipped = 1;
2591
2592 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2593
2594 if (pipe_write_wanted)
2595 {
2596 int old_errno;
2597
2598 pipe_write_skipped = 0;
2599 ECB_MEMORY_FENCE_RELEASE;
2600
2601 old_errno = errno; /* save errno because write will clobber it */
2602
2603#if EV_USE_EVENTFD
2604 if (evpipe [0] < 0)
2605 {
2606 uint64_t counter = 1;
2607 write (evpipe [1], &counter, sizeof (uint64_t));
1249 } 2608 }
1250 else 2609 else
1251# endif 2610#endif
1252 { 2611 {
1253 while (pipe (evpipe)) 2612#ifdef _WIN32
1254 ev_syserr ("(libev) error creating signal/async pipe"); 2613 WSABUF buf;
1255 2614 DWORD sent;
1256 fd_intern (evpipe [0]); 2615 buf.buf = (char *)&buf;
1257 fd_intern (evpipe [1]); 2616 buf.len = 1;
1258 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2617 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2618#else
2619 write (evpipe [1], &(evpipe [1]), 1);
2620#endif
1259 } 2621 }
1260
1261 ev_io_start (EV_A_ &pipe_w);
1262 ev_unref (EV_A); /* watcher should not keep loop alive */
1263 }
1264}
1265
1266inline_size void
1267evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1268{
1269 if (!*flag)
1270 {
1271 int old_errno = errno; /* save errno because write might clobber it */
1272 char dummy;
1273
1274 *flag = 1;
1275
1276#if EV_USE_EVENTFD
1277 if (evfd >= 0)
1278 {
1279 uint64_t counter = 1;
1280 write (evfd, &counter, sizeof (uint64_t));
1281 }
1282 else
1283#endif
1284 /* win32 people keep sending patches that change this write() to send() */
1285 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1286 /* so when you think this write should be a send instead, please find out */
1287 /* where your send() is from - it's definitely not the microsoft send, and */
1288 /* tell me. thank you. */
1289 write (evpipe [1], &dummy, 1);
1290 2622
1291 errno = old_errno; 2623 errno = old_errno;
1292 } 2624 }
1293} 2625}
1294 2626
… …
1297static void 2629static void
1298pipecb (EV_P_ ev_io *iow, int revents) 2630pipecb (EV_P_ ev_io *iow, int revents)
1299{ 2631{
1300 int i; 2632 int i;
1301 2633
2634 if (revents & EV_READ)
2635 {
1302#if EV_USE_EVENTFD 2636#if EV_USE_EVENTFD
1303 if (evfd >= 0) 2637 if (evpipe [0] < 0)
1304 { 2638 {
1305 uint64_t counter; 2639 uint64_t counter;
1306 read (evfd, &counter, sizeof (uint64_t)); 2640 read (evpipe [1], &counter, sizeof (uint64_t));
1307 } 2641 }
1308 else 2642 else
1309#endif 2643#endif
1310 { 2644 {
1311 char dummy; 2645 char dummy[4];
1312 /* see discussion in evpipe_write when you think this read should be recv in win32 */ 2646#ifdef _WIN32
2647 WSABUF buf;
2648 DWORD recvd;
2649 DWORD flags = 0;
2650 buf.buf = dummy;
2651 buf.len = sizeof (dummy);
2652 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2653#else
1313 read (evpipe [0], &dummy, 1); 2654 read (evpipe [0], &dummy, sizeof (dummy));
2655#endif
2656 }
1314 } 2657 }
1315 2658
2659 pipe_write_skipped = 0;
2660
2661 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2662
2663#if EV_SIGNAL_ENABLE
1316 if (sig_pending) 2664 if (sig_pending)
1317 { 2665 {
1318 sig_pending = 0; 2666 sig_pending = 0;
1319 2667
2668 ECB_MEMORY_FENCE;
2669
1320 for (i = EV_NSIG - 1; i--; ) 2670 for (i = EV_NSIG - 1; i--; )
1321 if (expect_false (signals [i].pending)) 2671 if (ecb_expect_false (signals [i].pending))
1322 ev_feed_signal_event (EV_A_ i + 1); 2672 ev_feed_signal_event (EV_A_ i + 1);
1323 } 2673 }
2674#endif
1324 2675
1325#if EV_ASYNC_ENABLE 2676#if EV_ASYNC_ENABLE
1326 if (async_pending) 2677 if (async_pending)
1327 { 2678 {
1328 async_pending = 0; 2679 async_pending = 0;
2680
2681 ECB_MEMORY_FENCE;
1329 2682
1330 for (i = asynccnt; i--; ) 2683 for (i = asynccnt; i--; )
1331 if (asyncs [i]->sent) 2684 if (asyncs [i]->sent)
1332 { 2685 {
1333 asyncs [i]->sent = 0; 2686 asyncs [i]->sent = 0;
2687 ECB_MEMORY_FENCE_RELEASE;
1334 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2688 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1335 } 2689 }
1336 } 2690 }
1337#endif 2691#endif
1338} 2692}
1339 2693
1340/*****************************************************************************/ 2694/*****************************************************************************/
1341 2695
2696void
2697ev_feed_signal (int signum) EV_NOEXCEPT
2698{
2699#if EV_MULTIPLICITY
2700 EV_P;
2701 ECB_MEMORY_FENCE_ACQUIRE;
2702 EV_A = signals [signum - 1].loop;
2703
2704 if (!EV_A)
2705 return;
2706#endif
2707
2708 signals [signum - 1].pending = 1;
2709 evpipe_write (EV_A_ &sig_pending);
2710}
2711
1342static void 2712static void
1343ev_sighandler (int signum) 2713ev_sighandler (int signum)
1344{ 2714{
1345#if EV_MULTIPLICITY
1346 EV_P = signals [signum - 1].loop;
1347#endif
1348
1349#ifdef _WIN32 2715#ifdef _WIN32
1350 signal (signum, ev_sighandler); 2716 signal (signum, ev_sighandler);
1351#endif 2717#endif
1352 2718
1353 signals [signum - 1].pending = 1; 2719 ev_feed_signal (signum);
1354 evpipe_write (EV_A_ &sig_pending);
1355} 2720}
1356 2721
1357void noinline 2722ecb_noinline
2723void
1358ev_feed_signal_event (EV_P_ int signum) 2724ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
1359{ 2725{
1360 WL w; 2726 WL w;
1361 2727
1362 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2728 if (ecb_expect_false (signum <= 0 || signum >= EV_NSIG))
1363 return; 2729 return;
1364 2730
1365 --signum; 2731 --signum;
1366 2732
1367#if EV_MULTIPLICITY 2733#if EV_MULTIPLICITY
1368 /* it is permissible to try to feed a signal to the wrong loop */ 2734 /* it is permissible to try to feed a signal to the wrong loop */
1369 /* or, likely more useful, feeding a signal nobody is waiting for */ 2735 /* or, likely more useful, feeding a signal nobody is waiting for */
1370 2736
1371 if (expect_false (signals [signum].loop != EV_A)) 2737 if (ecb_expect_false (signals [signum].loop != EV_A))
1372 return; 2738 return;
1373#endif 2739#endif
1374 2740
1375 signals [signum].pending = 0; 2741 signals [signum].pending = 0;
2742 ECB_MEMORY_FENCE_RELEASE;
1376 2743
1377 for (w = signals [signum].head; w; w = w->next) 2744 for (w = signals [signum].head; w; w = w->next)
1378 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2745 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1379} 2746}
1380 2747
… …
1459 2826
1460#endif 2827#endif
1461 2828
1462/*****************************************************************************/ 2829/*****************************************************************************/
1463 2830
2831#if EV_USE_IOCP
2832# include "ev_iocp.c"
2833#endif
1464#if EV_USE_PORT 2834#if EV_USE_PORT
1465# include "ev_port.c" 2835# include "ev_port.c"
1466#endif 2836#endif
1467#if EV_USE_KQUEUE 2837#if EV_USE_KQUEUE
1468# include "ev_kqueue.c" 2838# include "ev_kqueue.c"
1469#endif 2839#endif
1470#if EV_USE_EPOLL 2840#if EV_USE_EPOLL
1471# include "ev_epoll.c" 2841# include "ev_epoll.c"
1472#endif 2842#endif
2843#if EV_USE_LINUXAIO
2844# include "ev_linuxaio.c"
2845#endif
2846#if EV_USE_IOURING
2847# include "ev_iouring.c"
2848#endif
1473#if EV_USE_POLL 2849#if EV_USE_POLL
1474# include "ev_poll.c" 2850# include "ev_poll.c"
1475#endif 2851#endif
1476#if EV_USE_SELECT 2852#if EV_USE_SELECT
1477# include "ev_select.c" 2853# include "ev_select.c"
1478#endif 2854#endif
1479 2855
1480int 2856ecb_cold int
1481ev_version_major (void) 2857ev_version_major (void) EV_NOEXCEPT
1482{ 2858{
1483 return EV_VERSION_MAJOR; 2859 return EV_VERSION_MAJOR;
1484} 2860}
1485 2861
1486int 2862ecb_cold int
1487ev_version_minor (void) 2863ev_version_minor (void) EV_NOEXCEPT
1488{ 2864{
1489 return EV_VERSION_MINOR; 2865 return EV_VERSION_MINOR;
1490} 2866}
1491 2867
1492/* return true if we are running with elevated privileges and should ignore env variables */ 2868/* return true if we are running with elevated privileges and should ignore env variables */
1493int inline_size 2869inline_size ecb_cold int
1494enable_secure (void) 2870enable_secure (void)
1495{ 2871{
1496#ifdef _WIN32 2872#ifdef _WIN32
1497 return 0; 2873 return 0;
1498#else 2874#else
1499 return getuid () != geteuid () 2875 return getuid () != geteuid ()
1500 || getgid () != getegid (); 2876 || getgid () != getegid ();
1501#endif 2877#endif
1502} 2878}
1503 2879
2880ecb_cold
1504unsigned int 2881unsigned int
1505ev_supported_backends (void) 2882ev_supported_backends (void) EV_NOEXCEPT
1506{ 2883{
1507 unsigned int flags = 0; 2884 unsigned int flags = 0;
1508 2885
1509 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2886 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1510 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2887 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
1511 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 2888 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2889 if (EV_USE_LINUXAIO) flags |= EVBACKEND_LINUXAIO;
2890 if (EV_USE_IOURING ) flags |= EVBACKEND_IOURING;
1512 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 2891 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
1513 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2892 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
1514 2893
1515 return flags; 2894 return flags;
1516} 2895}
1517 2896
2897ecb_cold
1518unsigned int 2898unsigned int
1519ev_recommended_backends (void) 2899ev_recommended_backends (void) EV_NOEXCEPT
1520{ 2900{
1521 unsigned int flags = ev_supported_backends (); 2901 unsigned int flags = ev_supported_backends ();
1522 2902
1523#ifndef __NetBSD__ 2903#ifndef __NetBSD__
1524 /* kqueue is borked on everything but netbsd apparently */ 2904 /* kqueue is borked on everything but netbsd apparently */
… …
1532#endif 2912#endif
1533#ifdef __FreeBSD__ 2913#ifdef __FreeBSD__
1534 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */ 2914 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1535#endif 2915#endif
1536 2916
2917 /* TODO: linuxaio is very experimental */
2918#if !EV_RECOMMEND_LINUXAIO
2919 flags &= ~EVBACKEND_LINUXAIO;
2920#endif
2921 /* TODO: linuxaio is super experimental */
2922#if !EV_RECOMMEND_IOURING
2923 flags &= ~EVBACKEND_IOURING;
2924#endif
2925
1537 return flags; 2926 return flags;
1538} 2927}
1539 2928
2929ecb_cold
1540unsigned int 2930unsigned int
1541ev_embeddable_backends (void) 2931ev_embeddable_backends (void) EV_NOEXCEPT
1542{ 2932{
1543 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2933 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1544 2934
1545 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2935 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1546 /* please fix it and tell me how to detect the fix */ 2936 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1547 flags &= ~EVBACKEND_EPOLL; 2937 flags &= ~EVBACKEND_EPOLL;
2938
2939 /* EVBACKEND_LINUXAIO is theoretically embeddable, but suffers from a performance overhead */
2940
2941 /* EVBACKEND_IOURING is practically embeddable, but the current implementation is not
2942 * because our backend_fd is the epoll fd we need as fallback.
2943 * if the kernel ever is fixed, this might change...
2944 */
1548 2945
1549 return flags; 2946 return flags;
1550} 2947}
1551 2948
1552unsigned int 2949unsigned int
1553ev_backend (EV_P) 2950ev_backend (EV_P) EV_NOEXCEPT
1554{ 2951{
1555 return backend; 2952 return backend;
1556} 2953}
1557 2954
1558#if EV_FEATURE_API 2955#if EV_FEATURE_API
1559unsigned int 2956unsigned int
1560ev_iteration (EV_P) 2957ev_iteration (EV_P) EV_NOEXCEPT
1561{ 2958{
1562 return loop_count; 2959 return loop_count;
1563} 2960}
1564 2961
1565unsigned int 2962unsigned int
1566ev_depth (EV_P) 2963ev_depth (EV_P) EV_NOEXCEPT
1567{ 2964{
1568 return loop_depth; 2965 return loop_depth;
1569} 2966}
1570 2967
1571void 2968void
1572ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2969ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1573{ 2970{
1574 io_blocktime = interval; 2971 io_blocktime = interval;
1575} 2972}
1576 2973
1577void 2974void
1578ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2975ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1579{ 2976{
1580 timeout_blocktime = interval; 2977 timeout_blocktime = interval;
1581} 2978}
1582 2979
1583void 2980void
1584ev_set_userdata (EV_P_ void *data) 2981ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
1585{ 2982{
1586 userdata = data; 2983 userdata = data;
1587} 2984}
1588 2985
1589void * 2986void *
1590ev_userdata (EV_P) 2987ev_userdata (EV_P) EV_NOEXCEPT
1591{ 2988{
1592 return userdata; 2989 return userdata;
1593} 2990}
1594 2991
2992void
1595void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2993ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
1596{ 2994{
1597 invoke_cb = invoke_pending_cb; 2995 invoke_cb = invoke_pending_cb;
1598} 2996}
1599 2997
2998void
1600void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2999ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
1601{ 3000{
1602 release_cb = release; 3001 release_cb = release;
1603 acquire_cb = acquire; 3002 acquire_cb = acquire;
1604} 3003}
1605#endif 3004#endif
1606 3005
1607/* initialise a loop structure, must be zero-initialised */ 3006/* initialise a loop structure, must be zero-initialised */
1608static void noinline 3007ecb_noinline ecb_cold
3008static void
1609loop_init (EV_P_ unsigned int flags) 3009loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
1610{ 3010{
1611 if (!backend) 3011 if (!backend)
1612 { 3012 {
3013 origflags = flags;
3014
1613#if EV_USE_REALTIME 3015#if EV_USE_REALTIME
1614 if (!have_realtime) 3016 if (!have_realtime)
1615 { 3017 {
1616 struct timespec ts; 3018 struct timespec ts;
1617 3019
… …
1639 if (!(flags & EVFLAG_NOENV) 3041 if (!(flags & EVFLAG_NOENV)
1640 && !enable_secure () 3042 && !enable_secure ()
1641 && getenv ("LIBEV_FLAGS")) 3043 && getenv ("LIBEV_FLAGS"))
1642 flags = atoi (getenv ("LIBEV_FLAGS")); 3044 flags = atoi (getenv ("LIBEV_FLAGS"));
1643 3045
1644 ev_rt_now = ev_time (); 3046 ev_rt_now = ev_time ();
1645 mn_now = get_clock (); 3047 mn_now = get_clock ();
1646 now_floor = mn_now; 3048 now_floor = mn_now;
1647 rtmn_diff = ev_rt_now - mn_now; 3049 rtmn_diff = ev_rt_now - mn_now;
1648#if EV_FEATURE_API 3050#if EV_FEATURE_API
1649 invoke_cb = ev_invoke_pending; 3051 invoke_cb = ev_invoke_pending;
1650#endif 3052#endif
1651 3053
1652 io_blocktime = 0.; 3054 io_blocktime = 0.;
1653 timeout_blocktime = 0.; 3055 timeout_blocktime = 0.;
1654 backend = 0; 3056 backend = 0;
1655 backend_fd = -1; 3057 backend_fd = -1;
1656 sig_pending = 0; 3058 sig_pending = 0;
1657#if EV_ASYNC_ENABLE 3059#if EV_ASYNC_ENABLE
1658 async_pending = 0; 3060 async_pending = 0;
1659#endif 3061#endif
3062 pipe_write_skipped = 0;
3063 pipe_write_wanted = 0;
3064 evpipe [0] = -1;
3065 evpipe [1] = -1;
1660#if EV_USE_INOTIFY 3066#if EV_USE_INOTIFY
1661 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 3067 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1662#endif 3068#endif
1663#if EV_USE_SIGNALFD 3069#if EV_USE_SIGNALFD
1664 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 3070 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1665#endif 3071#endif
1666 3072
1667 if (!(flags & 0x0000ffffU)) 3073 if (!(flags & EVBACKEND_MASK))
1668 flags |= ev_recommended_backends (); 3074 flags |= ev_recommended_backends ();
1669 3075
3076#if EV_USE_IOCP
3077 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
3078#endif
1670#if EV_USE_PORT 3079#if EV_USE_PORT
1671 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 3080 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1672#endif 3081#endif
1673#if EV_USE_KQUEUE 3082#if EV_USE_KQUEUE
1674 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 3083 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
3084#endif
3085#if EV_USE_IOURING
3086 if (!backend && (flags & EVBACKEND_IOURING )) backend = iouring_init (EV_A_ flags);
3087#endif
3088#if EV_USE_LINUXAIO
3089 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
1675#endif 3090#endif
1676#if EV_USE_EPOLL 3091#if EV_USE_EPOLL
1677 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 3092 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
1678#endif 3093#endif
1679#if EV_USE_POLL 3094#if EV_USE_POLL
1680 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 3095 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
1681#endif 3096#endif
1682#if EV_USE_SELECT 3097#if EV_USE_SELECT
1683 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 3098 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
1684#endif 3099#endif
1685 3100
1686 ev_prepare_init (&pending_w, pendingcb); 3101 ev_prepare_init (&pending_w, pendingcb);
1687 3102
1688#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 3103#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
… …
1691#endif 3106#endif
1692 } 3107 }
1693} 3108}
1694 3109
1695/* free up a loop structure */ 3110/* free up a loop structure */
1696static void noinline 3111ecb_cold
3112void
1697loop_destroy (EV_P) 3113ev_loop_destroy (EV_P)
1698{ 3114{
1699 int i; 3115 int i;
3116
3117#if EV_MULTIPLICITY
3118 /* mimic free (0) */
3119 if (!EV_A)
3120 return;
3121#endif
3122
3123#if EV_CLEANUP_ENABLE
3124 /* queue cleanup watchers (and execute them) */
3125 if (ecb_expect_false (cleanupcnt))
3126 {
3127 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
3128 EV_INVOKE_PENDING;
3129 }
3130#endif
3131
3132#if EV_CHILD_ENABLE
3133 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
3134 {
3135 ev_ref (EV_A); /* child watcher */
3136 ev_signal_stop (EV_A_ &childev);
3137 }
3138#endif
1700 3139
1701 if (ev_is_active (&pipe_w)) 3140 if (ev_is_active (&pipe_w))
1702 { 3141 {
1703 /*ev_ref (EV_A);*/ 3142 /*ev_ref (EV_A);*/
1704 /*ev_io_stop (EV_A_ &pipe_w);*/ 3143 /*ev_io_stop (EV_A_ &pipe_w);*/
1705 3144
1706#if EV_USE_EVENTFD
1707 if (evfd >= 0)
1708 close (evfd);
1709#endif
1710
1711 if (evpipe [0] >= 0)
1712 {
1713 EV_WIN32_CLOSE_FD (evpipe [0]); 3145 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1714 EV_WIN32_CLOSE_FD (evpipe [1]); 3146 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1715 }
1716 } 3147 }
1717 3148
1718#if EV_USE_SIGNALFD 3149#if EV_USE_SIGNALFD
1719 if (ev_is_active (&sigfd_w)) 3150 if (ev_is_active (&sigfd_w))
1720 close (sigfd); 3151 close (sigfd);
… …
1726#endif 3157#endif
1727 3158
1728 if (backend_fd >= 0) 3159 if (backend_fd >= 0)
1729 close (backend_fd); 3160 close (backend_fd);
1730 3161
3162#if EV_USE_IOCP
3163 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
3164#endif
1731#if EV_USE_PORT 3165#if EV_USE_PORT
1732 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3166 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1733#endif 3167#endif
1734#if EV_USE_KQUEUE 3168#if EV_USE_KQUEUE
1735 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3169 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
3170#endif
3171#if EV_USE_IOURING
3172 if (backend == EVBACKEND_IOURING ) iouring_destroy (EV_A);
3173#endif
3174#if EV_USE_LINUXAIO
3175 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
1736#endif 3176#endif
1737#if EV_USE_EPOLL 3177#if EV_USE_EPOLL
1738 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3178 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
1739#endif 3179#endif
1740#if EV_USE_POLL 3180#if EV_USE_POLL
1741 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3181 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
1742#endif 3182#endif
1743#if EV_USE_SELECT 3183#if EV_USE_SELECT
1744 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3184 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
1745#endif 3185#endif
1746 3186
1747 for (i = NUMPRI; i--; ) 3187 for (i = NUMPRI; i--; )
1748 { 3188 {
1749 array_free (pending, [i]); 3189 array_free (pending, [i]);
… …
1762 array_free (periodic, EMPTY); 3202 array_free (periodic, EMPTY);
1763#endif 3203#endif
1764#if EV_FORK_ENABLE 3204#if EV_FORK_ENABLE
1765 array_free (fork, EMPTY); 3205 array_free (fork, EMPTY);
1766#endif 3206#endif
3207#if EV_CLEANUP_ENABLE
3208 array_free (cleanup, EMPTY);
3209#endif
1767 array_free (prepare, EMPTY); 3210 array_free (prepare, EMPTY);
1768 array_free (check, EMPTY); 3211 array_free (check, EMPTY);
1769#if EV_ASYNC_ENABLE 3212#if EV_ASYNC_ENABLE
1770 array_free (async, EMPTY); 3213 array_free (async, EMPTY);
1771#endif 3214#endif
1772 3215
1773 backend = 0; 3216 backend = 0;
3217
3218#if EV_MULTIPLICITY
3219 if (ev_is_default_loop (EV_A))
3220#endif
3221 ev_default_loop_ptr = 0;
3222#if EV_MULTIPLICITY
3223 else
3224 ev_free (EV_A);
3225#endif
1774} 3226}
1775 3227
1776#if EV_USE_INOTIFY 3228#if EV_USE_INOTIFY
1777inline_size void infy_fork (EV_P); 3229inline_size void infy_fork (EV_P);
1778#endif 3230#endif
1779 3231
1780inline_size void 3232inline_size void
1781loop_fork (EV_P) 3233loop_fork (EV_P)
1782{ 3234{
1783#if EV_USE_PORT 3235#if EV_USE_PORT
1784 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3236 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1785#endif 3237#endif
1786#if EV_USE_KQUEUE 3238#if EV_USE_KQUEUE
1787 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 3239 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
3240#endif
3241#if EV_USE_IOURING
3242 if (backend == EVBACKEND_IOURING ) iouring_fork (EV_A);
3243#endif
3244#if EV_USE_LINUXAIO
3245 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
1788#endif 3246#endif
1789#if EV_USE_EPOLL 3247#if EV_USE_EPOLL
1790 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3248 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
1791#endif 3249#endif
1792#if EV_USE_INOTIFY 3250#if EV_USE_INOTIFY
1793 infy_fork (EV_A); 3251 infy_fork (EV_A);
1794#endif 3252#endif
1795 3253
3254#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1796 if (ev_is_active (&pipe_w)) 3255 if (ev_is_active (&pipe_w) && postfork != 2)
1797 { 3256 {
1798 /* this "locks" the handlers against writing to the pipe */ 3257 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1799 /* while we modify the fd vars */
1800 sig_pending = 1;
1801#if EV_ASYNC_ENABLE
1802 async_pending = 1;
1803#endif
1804 3258
1805 ev_ref (EV_A); 3259 ev_ref (EV_A);
1806 ev_io_stop (EV_A_ &pipe_w); 3260 ev_io_stop (EV_A_ &pipe_w);
1807 3261
1808#if EV_USE_EVENTFD
1809 if (evfd >= 0)
1810 close (evfd);
1811#endif
1812
1813 if (evpipe [0] >= 0) 3262 if (evpipe [0] >= 0)
1814 {
1815 EV_WIN32_CLOSE_FD (evpipe [0]); 3263 EV_WIN32_CLOSE_FD (evpipe [0]);
1816 EV_WIN32_CLOSE_FD (evpipe [1]);
1817 }
1818 3264
1819#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1820 evpipe_init (EV_A); 3265 evpipe_init (EV_A);
1821 /* now iterate over everything, in case we missed something */ 3266 /* iterate over everything, in case we missed something before */
1822 pipecb (EV_A_ &pipe_w, EV_READ); 3267 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1823#endif
1824 } 3268 }
3269#endif
1825 3270
1826 postfork = 0; 3271 postfork = 0;
1827} 3272}
1828 3273
1829#if EV_MULTIPLICITY 3274#if EV_MULTIPLICITY
1830 3275
3276ecb_cold
1831struct ev_loop * 3277struct ev_loop *
1832ev_loop_new (unsigned int flags) 3278ev_loop_new (unsigned int flags) EV_NOEXCEPT
1833{ 3279{
1834 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3280 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1835 3281
1836 memset (EV_A, 0, sizeof (struct ev_loop)); 3282 memset (EV_A, 0, sizeof (struct ev_loop));
1837 loop_init (EV_A_ flags); 3283 loop_init (EV_A_ flags);
1838 3284
1839 if (ev_backend (EV_A)) 3285 if (ev_backend (EV_A))
1840 return EV_A; 3286 return EV_A;
1841 3287
3288 ev_free (EV_A);
1842 return 0; 3289 return 0;
1843} 3290}
1844 3291
1845void
1846ev_loop_destroy (EV_P)
1847{
1848 loop_destroy (EV_A);
1849 ev_free (loop);
1850}
1851
1852void
1853ev_loop_fork (EV_P)
1854{
1855 postfork = 1; /* must be in line with ev_default_fork */
1856}
1857#endif /* multiplicity */ 3292#endif /* multiplicity */
1858 3293
1859#if EV_VERIFY 3294#if EV_VERIFY
1860static void noinline 3295ecb_noinline ecb_cold
3296static void
1861verify_watcher (EV_P_ W w) 3297verify_watcher (EV_P_ W w)
1862{ 3298{
1863 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3299 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1864 3300
1865 if (w->pending) 3301 if (w->pending)
1866 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3302 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1867} 3303}
1868 3304
1869static void noinline 3305ecb_noinline ecb_cold
3306static void
1870verify_heap (EV_P_ ANHE *heap, int N) 3307verify_heap (EV_P_ ANHE *heap, int N)
1871{ 3308{
1872 int i; 3309 int i;
1873 3310
1874 for (i = HEAP0; i < N + HEAP0; ++i) 3311 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1879 3316
1880 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3317 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1881 } 3318 }
1882} 3319}
1883 3320
1884static void noinline 3321ecb_noinline ecb_cold
3322static void
1885array_verify (EV_P_ W *ws, int cnt) 3323array_verify (EV_P_ W *ws, int cnt)
1886{ 3324{
1887 while (cnt--) 3325 while (cnt--)
1888 { 3326 {
1889 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3327 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
1891 } 3329 }
1892} 3330}
1893#endif 3331#endif
1894 3332
1895#if EV_FEATURE_API 3333#if EV_FEATURE_API
1896void 3334void ecb_cold
1897ev_verify (EV_P) 3335ev_verify (EV_P) EV_NOEXCEPT
1898{ 3336{
1899#if EV_VERIFY 3337#if EV_VERIFY
1900 int i; 3338 int i;
1901 WL w; 3339 WL w, w2;
1902 3340
1903 assert (activecnt >= -1); 3341 assert (activecnt >= -1);
1904 3342
1905 assert (fdchangemax >= fdchangecnt); 3343 assert (fdchangemax >= fdchangecnt);
1906 for (i = 0; i < fdchangecnt; ++i) 3344 for (i = 0; i < fdchangecnt; ++i)
1907 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3345 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1908 3346
1909 assert (anfdmax >= 0); 3347 assert (anfdmax >= 0);
1910 for (i = 0; i < anfdmax; ++i) 3348 for (i = 0; i < anfdmax; ++i)
3349 {
3350 int j = 0;
3351
1911 for (w = anfds [i].head; w; w = w->next) 3352 for (w = w2 = anfds [i].head; w; w = w->next)
1912 { 3353 {
1913 verify_watcher (EV_A_ (W)w); 3354 verify_watcher (EV_A_ (W)w);
3355
3356 if (j++ & 1)
3357 {
3358 assert (("libev: io watcher list contains a loop", w != w2));
3359 w2 = w2->next;
3360 }
3361
1914 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3362 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1915 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 3363 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1916 } 3364 }
3365 }
1917 3366
1918 assert (timermax >= timercnt); 3367 assert (timermax >= timercnt);
1919 verify_heap (EV_A_ timers, timercnt); 3368 verify_heap (EV_A_ timers, timercnt);
1920 3369
1921#if EV_PERIODIC_ENABLE 3370#if EV_PERIODIC_ENABLE
… …
1936#if EV_FORK_ENABLE 3385#if EV_FORK_ENABLE
1937 assert (forkmax >= forkcnt); 3386 assert (forkmax >= forkcnt);
1938 array_verify (EV_A_ (W *)forks, forkcnt); 3387 array_verify (EV_A_ (W *)forks, forkcnt);
1939#endif 3388#endif
1940 3389
3390#if EV_CLEANUP_ENABLE
3391 assert (cleanupmax >= cleanupcnt);
3392 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
3393#endif
3394
1941#if EV_ASYNC_ENABLE 3395#if EV_ASYNC_ENABLE
1942 assert (asyncmax >= asynccnt); 3396 assert (asyncmax >= asynccnt);
1943 array_verify (EV_A_ (W *)asyncs, asynccnt); 3397 array_verify (EV_A_ (W *)asyncs, asynccnt);
1944#endif 3398#endif
1945 3399
… …
1962#endif 3416#endif
1963} 3417}
1964#endif 3418#endif
1965 3419
1966#if EV_MULTIPLICITY 3420#if EV_MULTIPLICITY
3421ecb_cold
1967struct ev_loop * 3422struct ev_loop *
1968ev_default_loop_init (unsigned int flags)
1969#else 3423#else
1970int 3424int
3425#endif
1971ev_default_loop (unsigned int flags) 3426ev_default_loop (unsigned int flags) EV_NOEXCEPT
1972#endif
1973{ 3427{
1974 if (!ev_default_loop_ptr) 3428 if (!ev_default_loop_ptr)
1975 { 3429 {
1976#if EV_MULTIPLICITY 3430#if EV_MULTIPLICITY
1977 EV_P = ev_default_loop_ptr = &default_loop_struct; 3431 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1996 3450
1997 return ev_default_loop_ptr; 3451 return ev_default_loop_ptr;
1998} 3452}
1999 3453
2000void 3454void
2001ev_default_destroy (void) 3455ev_loop_fork (EV_P) EV_NOEXCEPT
2002{ 3456{
2003#if EV_MULTIPLICITY 3457 postfork = 1;
2004 EV_P = ev_default_loop_ptr;
2005#endif
2006
2007 ev_default_loop_ptr = 0;
2008
2009#if EV_CHILD_ENABLE
2010 ev_ref (EV_A); /* child watcher */
2011 ev_signal_stop (EV_A_ &childev);
2012#endif
2013
2014 loop_destroy (EV_A);
2015}
2016
2017void
2018ev_default_fork (void)
2019{
2020#if EV_MULTIPLICITY
2021 EV_P = ev_default_loop_ptr;
2022#endif
2023
2024 postfork = 1; /* must be in line with ev_loop_fork */
2025} 3458}
2026 3459
2027/*****************************************************************************/ 3460/*****************************************************************************/
2028 3461
2029void 3462void
… …
2031{ 3464{
2032 EV_CB_INVOKE ((W)w, revents); 3465 EV_CB_INVOKE ((W)w, revents);
2033} 3466}
2034 3467
2035unsigned int 3468unsigned int
2036ev_pending_count (EV_P) 3469ev_pending_count (EV_P) EV_NOEXCEPT
2037{ 3470{
2038 int pri; 3471 int pri;
2039 unsigned int count = 0; 3472 unsigned int count = 0;
2040 3473
2041 for (pri = NUMPRI; pri--; ) 3474 for (pri = NUMPRI; pri--; )
2042 count += pendingcnt [pri]; 3475 count += pendingcnt [pri];
2043 3476
2044 return count; 3477 return count;
2045} 3478}
2046 3479
2047void noinline 3480ecb_noinline
3481void
2048ev_invoke_pending (EV_P) 3482ev_invoke_pending (EV_P)
2049{ 3483{
2050 int pri; 3484 pendingpri = NUMPRI;
2051 3485
2052 for (pri = NUMPRI; pri--; ) 3486 do
3487 {
3488 --pendingpri;
3489
3490 /* pendingpri possibly gets modified in the inner loop */
2053 while (pendingcnt [pri]) 3491 while (pendingcnt [pendingpri])
2054 { 3492 {
2055 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3493 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2056 3494
2057 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2058 /* ^ this is no longer true, as pending_w could be here */
2059
2060 p->w->pending = 0; 3495 p->w->pending = 0;
2061 EV_CB_INVOKE (p->w, p->events); 3496 EV_CB_INVOKE (p->w, p->events);
2062 EV_FREQUENT_CHECK; 3497 EV_FREQUENT_CHECK;
2063 } 3498 }
3499 }
3500 while (pendingpri);
2064} 3501}
2065 3502
2066#if EV_IDLE_ENABLE 3503#if EV_IDLE_ENABLE
2067/* make idle watchers pending. this handles the "call-idle */ 3504/* make idle watchers pending. this handles the "call-idle */
2068/* only when higher priorities are idle" logic */ 3505/* only when higher priorities are idle" logic */
2069inline_size void 3506inline_size void
2070idle_reify (EV_P) 3507idle_reify (EV_P)
2071{ 3508{
2072 if (expect_false (idleall)) 3509 if (ecb_expect_false (idleall))
2073 { 3510 {
2074 int pri; 3511 int pri;
2075 3512
2076 for (pri = NUMPRI; pri--; ) 3513 for (pri = NUMPRI; pri--; )
2077 { 3514 {
… …
2125 feed_reverse_done (EV_A_ EV_TIMER); 3562 feed_reverse_done (EV_A_ EV_TIMER);
2126 } 3563 }
2127} 3564}
2128 3565
2129#if EV_PERIODIC_ENABLE 3566#if EV_PERIODIC_ENABLE
3567
3568ecb_noinline
3569static void
3570periodic_recalc (EV_P_ ev_periodic *w)
3571{
3572 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3573 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3574
3575 /* the above almost always errs on the low side */
3576 while (at <= ev_rt_now)
3577 {
3578 ev_tstamp nat = at + w->interval;
3579
3580 /* when resolution fails us, we use ev_rt_now */
3581 if (ecb_expect_false (nat == at))
3582 {
3583 at = ev_rt_now;
3584 break;
3585 }
3586
3587 at = nat;
3588 }
3589
3590 ev_at (w) = at;
3591}
3592
2130/* make periodics pending */ 3593/* make periodics pending */
2131inline_size void 3594inline_size void
2132periodics_reify (EV_P) 3595periodics_reify (EV_P)
2133{ 3596{
2134 EV_FREQUENT_CHECK; 3597 EV_FREQUENT_CHECK;
2135 3598
2136 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3599 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2137 { 3600 {
2138 int feed_count = 0;
2139
2140 do 3601 do
2141 { 3602 {
2142 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3603 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2143 3604
2144 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3605 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2153 ANHE_at_cache (periodics [HEAP0]); 3614 ANHE_at_cache (periodics [HEAP0]);
2154 downheap (periodics, periodiccnt, HEAP0); 3615 downheap (periodics, periodiccnt, HEAP0);
2155 } 3616 }
2156 else if (w->interval) 3617 else if (w->interval)
2157 { 3618 {
2158 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3619 periodic_recalc (EV_A_ w);
2159 /* if next trigger time is not sufficiently in the future, put it there */
2160 /* this might happen because of floating point inexactness */
2161 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2162 {
2163 ev_at (w) += w->interval;
2164
2165 /* if interval is unreasonably low we might still have a time in the past */
2166 /* so correct this. this will make the periodic very inexact, but the user */
2167 /* has effectively asked to get triggered more often than possible */
2168 if (ev_at (w) < ev_rt_now)
2169 ev_at (w) = ev_rt_now;
2170 }
2171
2172 ANHE_at_cache (periodics [HEAP0]); 3620 ANHE_at_cache (periodics [HEAP0]);
2173 downheap (periodics, periodiccnt, HEAP0); 3621 downheap (periodics, periodiccnt, HEAP0);
2174 } 3622 }
2175 else 3623 else
2176 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3624 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2184 } 3632 }
2185} 3633}
2186 3634
2187/* simply recalculate all periodics */ 3635/* simply recalculate all periodics */
2188/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3636/* TODO: maybe ensure that at least one event happens when jumping forward? */
2189static void noinline 3637ecb_noinline ecb_cold
3638static void
2190periodics_reschedule (EV_P) 3639periodics_reschedule (EV_P)
2191{ 3640{
2192 int i; 3641 int i;
2193 3642
2194 /* adjust periodics after time jump */ 3643 /* adjust periodics after time jump */
… …
2197 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3646 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2198 3647
2199 if (w->reschedule_cb) 3648 if (w->reschedule_cb)
2200 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3649 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2201 else if (w->interval) 3650 else if (w->interval)
2202 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3651 periodic_recalc (EV_A_ w);
2203 3652
2204 ANHE_at_cache (periodics [i]); 3653 ANHE_at_cache (periodics [i]);
2205 } 3654 }
2206 3655
2207 reheap (periodics, periodiccnt); 3656 reheap (periodics, periodiccnt);
2208} 3657}
2209#endif 3658#endif
2210 3659
2211/* adjust all timers by a given offset */ 3660/* adjust all timers by a given offset */
2212static void noinline 3661ecb_noinline ecb_cold
3662static void
2213timers_reschedule (EV_P_ ev_tstamp adjust) 3663timers_reschedule (EV_P_ ev_tstamp adjust)
2214{ 3664{
2215 int i; 3665 int i;
2216 3666
2217 for (i = 0; i < timercnt; ++i) 3667 for (i = 0; i < timercnt; ++i)
… …
2226/* also detect if there was a timejump, and act accordingly */ 3676/* also detect if there was a timejump, and act accordingly */
2227inline_speed void 3677inline_speed void
2228time_update (EV_P_ ev_tstamp max_block) 3678time_update (EV_P_ ev_tstamp max_block)
2229{ 3679{
2230#if EV_USE_MONOTONIC 3680#if EV_USE_MONOTONIC
2231 if (expect_true (have_monotonic)) 3681 if (ecb_expect_true (have_monotonic))
2232 { 3682 {
2233 int i; 3683 int i;
2234 ev_tstamp odiff = rtmn_diff; 3684 ev_tstamp odiff = rtmn_diff;
2235 3685
2236 mn_now = get_clock (); 3686 mn_now = get_clock ();
2237 3687
2238 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3688 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
2239 /* interpolate in the meantime */ 3689 /* interpolate in the meantime */
2240 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 3690 if (ecb_expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
2241 { 3691 {
2242 ev_rt_now = rtmn_diff + mn_now; 3692 ev_rt_now = rtmn_diff + mn_now;
2243 return; 3693 return;
2244 } 3694 }
2245 3695
… …
2254 * doesn't hurt either as we only do this on time-jumps or 3704 * doesn't hurt either as we only do this on time-jumps or
2255 * in the unlikely event of having been preempted here. 3705 * in the unlikely event of having been preempted here.
2256 */ 3706 */
2257 for (i = 4; --i; ) 3707 for (i = 4; --i; )
2258 { 3708 {
3709 ev_tstamp diff;
2259 rtmn_diff = ev_rt_now - mn_now; 3710 rtmn_diff = ev_rt_now - mn_now;
2260 3711
3712 diff = odiff - rtmn_diff;
3713
2261 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3714 if (ecb_expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2262 return; /* all is well */ 3715 return; /* all is well */
2263 3716
2264 ev_rt_now = ev_time (); 3717 ev_rt_now = ev_time ();
2265 mn_now = get_clock (); 3718 mn_now = get_clock ();
2266 now_floor = mn_now; 3719 now_floor = mn_now;
… …
2275 else 3728 else
2276#endif 3729#endif
2277 { 3730 {
2278 ev_rt_now = ev_time (); 3731 ev_rt_now = ev_time ();
2279 3732
2280 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 3733 if (ecb_expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
2281 { 3734 {
2282 /* adjust timers. this is easy, as the offset is the same for all of them */ 3735 /* adjust timers. this is easy, as the offset is the same for all of them */
2283 timers_reschedule (EV_A_ ev_rt_now - mn_now); 3736 timers_reschedule (EV_A_ ev_rt_now - mn_now);
2284#if EV_PERIODIC_ENABLE 3737#if EV_PERIODIC_ENABLE
2285 periodics_reschedule (EV_A); 3738 periodics_reschedule (EV_A);
… …
2288 3741
2289 mn_now = ev_rt_now; 3742 mn_now = ev_rt_now;
2290 } 3743 }
2291} 3744}
2292 3745
2293void 3746int
2294ev_loop (EV_P_ int flags) 3747ev_run (EV_P_ int flags)
2295{ 3748{
2296#if EV_FEATURE_API 3749#if EV_FEATURE_API
2297 ++loop_depth; 3750 ++loop_depth;
2298#endif 3751#endif
2299 3752
2300 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 3753 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2301 3754
2302 loop_done = EVUNLOOP_CANCEL; 3755 loop_done = EVBREAK_CANCEL;
2303 3756
2304 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 3757 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2305 3758
2306 do 3759 do
2307 { 3760 {
2308#if EV_VERIFY >= 2 3761#if EV_VERIFY >= 2
2309 ev_verify (EV_A); 3762 ev_verify (EV_A);
2310#endif 3763#endif
2311 3764
2312#ifndef _WIN32 3765#ifndef _WIN32
2313 if (expect_false (curpid)) /* penalise the forking check even more */ 3766 if (ecb_expect_false (curpid)) /* penalise the forking check even more */
2314 if (expect_false (getpid () != curpid)) 3767 if (ecb_expect_false (getpid () != curpid))
2315 { 3768 {
2316 curpid = getpid (); 3769 curpid = getpid ();
2317 postfork = 1; 3770 postfork = 1;
2318 } 3771 }
2319#endif 3772#endif
2320 3773
2321#if EV_FORK_ENABLE 3774#if EV_FORK_ENABLE
2322 /* we might have forked, so queue fork handlers */ 3775 /* we might have forked, so queue fork handlers */
2323 if (expect_false (postfork)) 3776 if (ecb_expect_false (postfork))
2324 if (forkcnt) 3777 if (forkcnt)
2325 { 3778 {
2326 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3779 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2327 EV_INVOKE_PENDING; 3780 EV_INVOKE_PENDING;
2328 } 3781 }
2329#endif 3782#endif
2330 3783
2331#if EV_PREPARE_ENABLE 3784#if EV_PREPARE_ENABLE
2332 /* queue prepare watchers (and execute them) */ 3785 /* queue prepare watchers (and execute them) */
2333 if (expect_false (preparecnt)) 3786 if (ecb_expect_false (preparecnt))
2334 { 3787 {
2335 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3788 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2336 EV_INVOKE_PENDING; 3789 EV_INVOKE_PENDING;
2337 } 3790 }
2338#endif 3791#endif
2339 3792
2340 if (expect_false (loop_done)) 3793 if (ecb_expect_false (loop_done))
2341 break; 3794 break;
2342 3795
2343 /* we might have forked, so reify kernel state if necessary */ 3796 /* we might have forked, so reify kernel state if necessary */
2344 if (expect_false (postfork)) 3797 if (ecb_expect_false (postfork))
2345 loop_fork (EV_A); 3798 loop_fork (EV_A);
2346 3799
2347 /* update fd-related kernel structures */ 3800 /* update fd-related kernel structures */
2348 fd_reify (EV_A); 3801 fd_reify (EV_A);
2349 3802
2350 /* calculate blocking time */ 3803 /* calculate blocking time */
2351 { 3804 {
2352 ev_tstamp waittime = 0.; 3805 ev_tstamp waittime = 0.;
2353 ev_tstamp sleeptime = 0.; 3806 ev_tstamp sleeptime = 0.;
2354 3807
3808 /* remember old timestamp for io_blocktime calculation */
3809 ev_tstamp prev_mn_now = mn_now;
3810
3811 /* update time to cancel out callback processing overhead */
3812 time_update (EV_A_ 1e100);
3813
3814 /* from now on, we want a pipe-wake-up */
3815 pipe_write_wanted = 1;
3816
3817 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3818
2355 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3819 if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2356 { 3820 {
2357 /* remember old timestamp for io_blocktime calculation */
2358 ev_tstamp prev_mn_now = mn_now;
2359
2360 /* update time to cancel out callback processing overhead */
2361 time_update (EV_A_ 1e100);
2362
2363 waittime = MAX_BLOCKTIME; 3821 waittime = MAX_BLOCKTIME;
2364 3822
2365 if (timercnt) 3823 if (timercnt)
2366 { 3824 {
2367 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3825 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2368 if (waittime > to) waittime = to; 3826 if (waittime > to) waittime = to;
2369 } 3827 }
2370 3828
2371#if EV_PERIODIC_ENABLE 3829#if EV_PERIODIC_ENABLE
2372 if (periodiccnt) 3830 if (periodiccnt)
2373 { 3831 {
2374 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3832 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2375 if (waittime > to) waittime = to; 3833 if (waittime > to) waittime = to;
2376 } 3834 }
2377#endif 3835#endif
2378 3836
2379 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3837 /* don't let timeouts decrease the waittime below timeout_blocktime */
2380 if (expect_false (waittime < timeout_blocktime)) 3838 if (ecb_expect_false (waittime < timeout_blocktime))
2381 waittime = timeout_blocktime; 3839 waittime = timeout_blocktime;
2382 3840
3841 /* at this point, we NEED to wait, so we have to ensure */
3842 /* to pass a minimum nonzero value to the backend */
3843 if (ecb_expect_false (waittime < backend_mintime))
3844 waittime = backend_mintime;
3845
2383 /* extra check because io_blocktime is commonly 0 */ 3846 /* extra check because io_blocktime is commonly 0 */
2384 if (expect_false (io_blocktime)) 3847 if (ecb_expect_false (io_blocktime))
2385 { 3848 {
2386 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3849 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2387 3850
2388 if (sleeptime > waittime - backend_fudge) 3851 if (sleeptime > waittime - backend_mintime)
2389 sleeptime = waittime - backend_fudge; 3852 sleeptime = waittime - backend_mintime;
2390 3853
2391 if (expect_true (sleeptime > 0.)) 3854 if (ecb_expect_true (sleeptime > 0.))
2392 { 3855 {
2393 ev_sleep (sleeptime); 3856 ev_sleep (sleeptime);
2394 waittime -= sleeptime; 3857 waittime -= sleeptime;
2395 } 3858 }
2396 } 3859 }
2397 } 3860 }
2398 3861
2399#if EV_FEATURE_API 3862#if EV_FEATURE_API
2400 ++loop_count; 3863 ++loop_count;
2401#endif 3864#endif
2402 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3865 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2403 backend_poll (EV_A_ waittime); 3866 backend_poll (EV_A_ waittime);
2404 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 3867 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3868
3869 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3870
3871 ECB_MEMORY_FENCE_ACQUIRE;
3872 if (pipe_write_skipped)
3873 {
3874 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3875 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3876 }
2405 3877
2406 /* update ev_rt_now, do magic */ 3878 /* update ev_rt_now, do magic */
2407 time_update (EV_A_ waittime + sleeptime); 3879 time_update (EV_A_ waittime + sleeptime);
2408 } 3880 }
2409 3881
… …
2418 idle_reify (EV_A); 3890 idle_reify (EV_A);
2419#endif 3891#endif
2420 3892
2421#if EV_CHECK_ENABLE 3893#if EV_CHECK_ENABLE
2422 /* queue check watchers, to be executed first */ 3894 /* queue check watchers, to be executed first */
2423 if (expect_false (checkcnt)) 3895 if (ecb_expect_false (checkcnt))
2424 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3896 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2425#endif 3897#endif
2426 3898
2427 EV_INVOKE_PENDING; 3899 EV_INVOKE_PENDING;
2428 } 3900 }
2429 while (expect_true ( 3901 while (ecb_expect_true (
2430 activecnt 3902 activecnt
2431 && !loop_done 3903 && !loop_done
2432 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3904 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2433 )); 3905 ));
2434 3906
2435 if (loop_done == EVUNLOOP_ONE) 3907 if (loop_done == EVBREAK_ONE)
2436 loop_done = EVUNLOOP_CANCEL; 3908 loop_done = EVBREAK_CANCEL;
2437 3909
2438#if EV_FEATURE_API 3910#if EV_FEATURE_API
2439 --loop_depth; 3911 --loop_depth;
2440#endif 3912#endif
2441}
2442 3913
3914 return activecnt;
3915}
3916
2443void 3917void
2444ev_unloop (EV_P_ int how) 3918ev_break (EV_P_ int how) EV_NOEXCEPT
2445{ 3919{
2446 loop_done = how; 3920 loop_done = how;
2447} 3921}
2448 3922
2449void 3923void
2450ev_ref (EV_P) 3924ev_ref (EV_P) EV_NOEXCEPT
2451{ 3925{
2452 ++activecnt; 3926 ++activecnt;
2453} 3927}
2454 3928
2455void 3929void
2456ev_unref (EV_P) 3930ev_unref (EV_P) EV_NOEXCEPT
2457{ 3931{
2458 --activecnt; 3932 --activecnt;
2459} 3933}
2460 3934
2461void 3935void
2462ev_now_update (EV_P) 3936ev_now_update (EV_P) EV_NOEXCEPT
2463{ 3937{
2464 time_update (EV_A_ 1e100); 3938 time_update (EV_A_ 1e100);
2465} 3939}
2466 3940
2467void 3941void
2468ev_suspend (EV_P) 3942ev_suspend (EV_P) EV_NOEXCEPT
2469{ 3943{
2470 ev_now_update (EV_A); 3944 ev_now_update (EV_A);
2471} 3945}
2472 3946
2473void 3947void
2474ev_resume (EV_P) 3948ev_resume (EV_P) EV_NOEXCEPT
2475{ 3949{
2476 ev_tstamp mn_prev = mn_now; 3950 ev_tstamp mn_prev = mn_now;
2477 3951
2478 ev_now_update (EV_A); 3952 ev_now_update (EV_A);
2479 timers_reschedule (EV_A_ mn_now - mn_prev); 3953 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2496inline_size void 3970inline_size void
2497wlist_del (WL *head, WL elem) 3971wlist_del (WL *head, WL elem)
2498{ 3972{
2499 while (*head) 3973 while (*head)
2500 { 3974 {
2501 if (expect_true (*head == elem)) 3975 if (ecb_expect_true (*head == elem))
2502 { 3976 {
2503 *head = elem->next; 3977 *head = elem->next;
2504 break; 3978 break;
2505 } 3979 }
2506 3980
… …
2518 w->pending = 0; 3992 w->pending = 0;
2519 } 3993 }
2520} 3994}
2521 3995
2522int 3996int
2523ev_clear_pending (EV_P_ void *w) 3997ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
2524{ 3998{
2525 W w_ = (W)w; 3999 W w_ = (W)w;
2526 int pending = w_->pending; 4000 int pending = w_->pending;
2527 4001
2528 if (expect_true (pending)) 4002 if (ecb_expect_true (pending))
2529 { 4003 {
2530 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 4004 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2531 p->w = (W)&pending_w; 4005 p->w = (W)&pending_w;
2532 w_->pending = 0; 4006 w_->pending = 0;
2533 return p->events; 4007 return p->events;
… …
2560 w->active = 0; 4034 w->active = 0;
2561} 4035}
2562 4036
2563/*****************************************************************************/ 4037/*****************************************************************************/
2564 4038
2565void noinline 4039ecb_noinline
4040void
2566ev_io_start (EV_P_ ev_io *w) 4041ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
2567{ 4042{
2568 int fd = w->fd; 4043 int fd = w->fd;
2569 4044
2570 if (expect_false (ev_is_active (w))) 4045 if (ecb_expect_false (ev_is_active (w)))
2571 return; 4046 return;
2572 4047
2573 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 4048 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2574 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 4049 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2575 4050
4051#if EV_VERIFY >= 2
4052 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
4053#endif
2576 EV_FREQUENT_CHECK; 4054 EV_FREQUENT_CHECK;
2577 4055
2578 ev_start (EV_A_ (W)w, 1); 4056 ev_start (EV_A_ (W)w, 1);
2579 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 4057 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
2580 wlist_add (&anfds[fd].head, (WL)w); 4058 wlist_add (&anfds[fd].head, (WL)w);
4059
4060 /* common bug, apparently */
4061 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
2581 4062
2582 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 4063 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2583 w->events &= ~EV__IOFDSET; 4064 w->events &= ~EV__IOFDSET;
2584 4065
2585 EV_FREQUENT_CHECK; 4066 EV_FREQUENT_CHECK;
2586} 4067}
2587 4068
2588void noinline 4069ecb_noinline
4070void
2589ev_io_stop (EV_P_ ev_io *w) 4071ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
2590{ 4072{
2591 clear_pending (EV_A_ (W)w); 4073 clear_pending (EV_A_ (W)w);
2592 if (expect_false (!ev_is_active (w))) 4074 if (ecb_expect_false (!ev_is_active (w)))
2593 return; 4075 return;
2594 4076
2595 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 4077 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2596 4078
4079#if EV_VERIFY >= 2
4080 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
4081#endif
2597 EV_FREQUENT_CHECK; 4082 EV_FREQUENT_CHECK;
2598 4083
2599 wlist_del (&anfds[w->fd].head, (WL)w); 4084 wlist_del (&anfds[w->fd].head, (WL)w);
2600 ev_stop (EV_A_ (W)w); 4085 ev_stop (EV_A_ (W)w);
2601 4086
2602 fd_change (EV_A_ w->fd, 1); 4087 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2603 4088
2604 EV_FREQUENT_CHECK; 4089 EV_FREQUENT_CHECK;
2605} 4090}
2606 4091
2607void noinline 4092ecb_noinline
4093void
2608ev_timer_start (EV_P_ ev_timer *w) 4094ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
2609{ 4095{
2610 if (expect_false (ev_is_active (w))) 4096 if (ecb_expect_false (ev_is_active (w)))
2611 return; 4097 return;
2612 4098
2613 ev_at (w) += mn_now; 4099 ev_at (w) += mn_now;
2614 4100
2615 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 4101 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2616 4102
2617 EV_FREQUENT_CHECK; 4103 EV_FREQUENT_CHECK;
2618 4104
2619 ++timercnt; 4105 ++timercnt;
2620 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 4106 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
2621 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 4107 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
2622 ANHE_w (timers [ev_active (w)]) = (WT)w; 4108 ANHE_w (timers [ev_active (w)]) = (WT)w;
2623 ANHE_at_cache (timers [ev_active (w)]); 4109 ANHE_at_cache (timers [ev_active (w)]);
2624 upheap (timers, ev_active (w)); 4110 upheap (timers, ev_active (w));
2625 4111
2626 EV_FREQUENT_CHECK; 4112 EV_FREQUENT_CHECK;
2627 4113
2628 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 4114 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2629} 4115}
2630 4116
2631void noinline 4117ecb_noinline
4118void
2632ev_timer_stop (EV_P_ ev_timer *w) 4119ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
2633{ 4120{
2634 clear_pending (EV_A_ (W)w); 4121 clear_pending (EV_A_ (W)w);
2635 if (expect_false (!ev_is_active (w))) 4122 if (ecb_expect_false (!ev_is_active (w)))
2636 return; 4123 return;
2637 4124
2638 EV_FREQUENT_CHECK; 4125 EV_FREQUENT_CHECK;
2639 4126
2640 { 4127 {
… …
2642 4129
2643 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 4130 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2644 4131
2645 --timercnt; 4132 --timercnt;
2646 4133
2647 if (expect_true (active < timercnt + HEAP0)) 4134 if (ecb_expect_true (active < timercnt + HEAP0))
2648 { 4135 {
2649 timers [active] = timers [timercnt + HEAP0]; 4136 timers [active] = timers [timercnt + HEAP0];
2650 adjustheap (timers, timercnt, active); 4137 adjustheap (timers, timercnt, active);
2651 } 4138 }
2652 } 4139 }
… …
2656 ev_stop (EV_A_ (W)w); 4143 ev_stop (EV_A_ (W)w);
2657 4144
2658 EV_FREQUENT_CHECK; 4145 EV_FREQUENT_CHECK;
2659} 4146}
2660 4147
2661void noinline 4148ecb_noinline
4149void
2662ev_timer_again (EV_P_ ev_timer *w) 4150ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
2663{ 4151{
2664 EV_FREQUENT_CHECK; 4152 EV_FREQUENT_CHECK;
4153
4154 clear_pending (EV_A_ (W)w);
2665 4155
2666 if (ev_is_active (w)) 4156 if (ev_is_active (w))
2667 { 4157 {
2668 if (w->repeat) 4158 if (w->repeat)
2669 { 4159 {
… …
2682 4172
2683 EV_FREQUENT_CHECK; 4173 EV_FREQUENT_CHECK;
2684} 4174}
2685 4175
2686ev_tstamp 4176ev_tstamp
2687ev_timer_remaining (EV_P_ ev_timer *w) 4177ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
2688{ 4178{
2689 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4179 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2690} 4180}
2691 4181
2692#if EV_PERIODIC_ENABLE 4182#if EV_PERIODIC_ENABLE
2693void noinline 4183ecb_noinline
4184void
2694ev_periodic_start (EV_P_ ev_periodic *w) 4185ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
2695{ 4186{
2696 if (expect_false (ev_is_active (w))) 4187 if (ecb_expect_false (ev_is_active (w)))
2697 return; 4188 return;
2698 4189
2699 if (w->reschedule_cb) 4190 if (w->reschedule_cb)
2700 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4191 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2701 else if (w->interval) 4192 else if (w->interval)
2702 { 4193 {
2703 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 4194 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2704 /* this formula differs from the one in periodic_reify because we do not always round up */ 4195 periodic_recalc (EV_A_ w);
2705 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2706 } 4196 }
2707 else 4197 else
2708 ev_at (w) = w->offset; 4198 ev_at (w) = w->offset;
2709 4199
2710 EV_FREQUENT_CHECK; 4200 EV_FREQUENT_CHECK;
2711 4201
2712 ++periodiccnt; 4202 ++periodiccnt;
2713 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4203 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2714 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4204 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
2715 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4205 ANHE_w (periodics [ev_active (w)]) = (WT)w;
2716 ANHE_at_cache (periodics [ev_active (w)]); 4206 ANHE_at_cache (periodics [ev_active (w)]);
2717 upheap (periodics, ev_active (w)); 4207 upheap (periodics, ev_active (w));
2718 4208
2719 EV_FREQUENT_CHECK; 4209 EV_FREQUENT_CHECK;
2720 4210
2721 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4211 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2722} 4212}
2723 4213
2724void noinline 4214ecb_noinline
4215void
2725ev_periodic_stop (EV_P_ ev_periodic *w) 4216ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
2726{ 4217{
2727 clear_pending (EV_A_ (W)w); 4218 clear_pending (EV_A_ (W)w);
2728 if (expect_false (!ev_is_active (w))) 4219 if (ecb_expect_false (!ev_is_active (w)))
2729 return; 4220 return;
2730 4221
2731 EV_FREQUENT_CHECK; 4222 EV_FREQUENT_CHECK;
2732 4223
2733 { 4224 {
… …
2735 4226
2736 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 4227 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2737 4228
2738 --periodiccnt; 4229 --periodiccnt;
2739 4230
2740 if (expect_true (active < periodiccnt + HEAP0)) 4231 if (ecb_expect_true (active < periodiccnt + HEAP0))
2741 { 4232 {
2742 periodics [active] = periodics [periodiccnt + HEAP0]; 4233 periodics [active] = periodics [periodiccnt + HEAP0];
2743 adjustheap (periodics, periodiccnt, active); 4234 adjustheap (periodics, periodiccnt, active);
2744 } 4235 }
2745 } 4236 }
… …
2747 ev_stop (EV_A_ (W)w); 4238 ev_stop (EV_A_ (W)w);
2748 4239
2749 EV_FREQUENT_CHECK; 4240 EV_FREQUENT_CHECK;
2750} 4241}
2751 4242
2752void noinline 4243ecb_noinline
4244void
2753ev_periodic_again (EV_P_ ev_periodic *w) 4245ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
2754{ 4246{
2755 /* TODO: use adjustheap and recalculation */ 4247 /* TODO: use adjustheap and recalculation */
2756 ev_periodic_stop (EV_A_ w); 4248 ev_periodic_stop (EV_A_ w);
2757 ev_periodic_start (EV_A_ w); 4249 ev_periodic_start (EV_A_ w);
2758} 4250}
… …
2762# define SA_RESTART 0 4254# define SA_RESTART 0
2763#endif 4255#endif
2764 4256
2765#if EV_SIGNAL_ENABLE 4257#if EV_SIGNAL_ENABLE
2766 4258
2767void noinline 4259ecb_noinline
4260void
2768ev_signal_start (EV_P_ ev_signal *w) 4261ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
2769{ 4262{
2770 if (expect_false (ev_is_active (w))) 4263 if (ecb_expect_false (ev_is_active (w)))
2771 return; 4264 return;
2772 4265
2773 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4266 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2774 4267
2775#if EV_MULTIPLICITY 4268#if EV_MULTIPLICITY
2776 assert (("libev: a signal must not be attached to two different loops", 4269 assert (("libev: a signal must not be attached to two different loops",
2777 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4270 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2778 4271
2779 signals [w->signum - 1].loop = EV_A; 4272 signals [w->signum - 1].loop = EV_A;
4273 ECB_MEMORY_FENCE_RELEASE;
2780#endif 4274#endif
2781 4275
2782 EV_FREQUENT_CHECK; 4276 EV_FREQUENT_CHECK;
2783 4277
2784#if EV_USE_SIGNALFD 4278#if EV_USE_SIGNALFD
… …
2831 sa.sa_handler = ev_sighandler; 4325 sa.sa_handler = ev_sighandler;
2832 sigfillset (&sa.sa_mask); 4326 sigfillset (&sa.sa_mask);
2833 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 4327 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2834 sigaction (w->signum, &sa, 0); 4328 sigaction (w->signum, &sa, 0);
2835 4329
4330 if (origflags & EVFLAG_NOSIGMASK)
4331 {
2836 sigemptyset (&sa.sa_mask); 4332 sigemptyset (&sa.sa_mask);
2837 sigaddset (&sa.sa_mask, w->signum); 4333 sigaddset (&sa.sa_mask, w->signum);
2838 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 4334 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
4335 }
2839#endif 4336#endif
2840 } 4337 }
2841 4338
2842 EV_FREQUENT_CHECK; 4339 EV_FREQUENT_CHECK;
2843} 4340}
2844 4341
2845void noinline 4342ecb_noinline
4343void
2846ev_signal_stop (EV_P_ ev_signal *w) 4344ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
2847{ 4345{
2848 clear_pending (EV_A_ (W)w); 4346 clear_pending (EV_A_ (W)w);
2849 if (expect_false (!ev_is_active (w))) 4347 if (ecb_expect_false (!ev_is_active (w)))
2850 return; 4348 return;
2851 4349
2852 EV_FREQUENT_CHECK; 4350 EV_FREQUENT_CHECK;
2853 4351
2854 wlist_del (&signals [w->signum - 1].head, (WL)w); 4352 wlist_del (&signals [w->signum - 1].head, (WL)w);
… …
2882#endif 4380#endif
2883 4381
2884#if EV_CHILD_ENABLE 4382#if EV_CHILD_ENABLE
2885 4383
2886void 4384void
2887ev_child_start (EV_P_ ev_child *w) 4385ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
2888{ 4386{
2889#if EV_MULTIPLICITY 4387#if EV_MULTIPLICITY
2890 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4388 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2891#endif 4389#endif
2892 if (expect_false (ev_is_active (w))) 4390 if (ecb_expect_false (ev_is_active (w)))
2893 return; 4391 return;
2894 4392
2895 EV_FREQUENT_CHECK; 4393 EV_FREQUENT_CHECK;
2896 4394
2897 ev_start (EV_A_ (W)w, 1); 4395 ev_start (EV_A_ (W)w, 1);
… …
2899 4397
2900 EV_FREQUENT_CHECK; 4398 EV_FREQUENT_CHECK;
2901} 4399}
2902 4400
2903void 4401void
2904ev_child_stop (EV_P_ ev_child *w) 4402ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
2905{ 4403{
2906 clear_pending (EV_A_ (W)w); 4404 clear_pending (EV_A_ (W)w);
2907 if (expect_false (!ev_is_active (w))) 4405 if (ecb_expect_false (!ev_is_active (w)))
2908 return; 4406 return;
2909 4407
2910 EV_FREQUENT_CHECK; 4408 EV_FREQUENT_CHECK;
2911 4409
2912 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w); 4410 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
… …
2926 4424
2927#define DEF_STAT_INTERVAL 5.0074891 4425#define DEF_STAT_INTERVAL 5.0074891
2928#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4426#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2929#define MIN_STAT_INTERVAL 0.1074891 4427#define MIN_STAT_INTERVAL 0.1074891
2930 4428
2931static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4429ecb_noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2932 4430
2933#if EV_USE_INOTIFY 4431#if EV_USE_INOTIFY
2934 4432
2935/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ 4433/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
2936# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4434# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2937 4435
2938static void noinline 4436ecb_noinline
4437static void
2939infy_add (EV_P_ ev_stat *w) 4438infy_add (EV_P_ ev_stat *w)
2940{ 4439{
2941 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); 4440 w->wd = inotify_add_watch (fs_fd, w->path,
4441 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4442 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4443 | IN_DONT_FOLLOW | IN_MASK_ADD);
2942 4444
2943 if (w->wd >= 0) 4445 if (w->wd >= 0)
2944 { 4446 {
2945 struct statfs sfs; 4447 struct statfs sfs;
2946 4448
… …
2950 4452
2951 if (!fs_2625) 4453 if (!fs_2625)
2952 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4454 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2953 else if (!statfs (w->path, &sfs) 4455 else if (!statfs (w->path, &sfs)
2954 && (sfs.f_type == 0x1373 /* devfs */ 4456 && (sfs.f_type == 0x1373 /* devfs */
4457 || sfs.f_type == 0x4006 /* fat */
4458 || sfs.f_type == 0x4d44 /* msdos */
2955 || sfs.f_type == 0xEF53 /* ext2/3 */ 4459 || sfs.f_type == 0xEF53 /* ext2/3 */
4460 || sfs.f_type == 0x72b6 /* jffs2 */
4461 || sfs.f_type == 0x858458f6 /* ramfs */
4462 || sfs.f_type == 0x5346544e /* ntfs */
2956 || sfs.f_type == 0x3153464a /* jfs */ 4463 || sfs.f_type == 0x3153464a /* jfs */
4464 || sfs.f_type == 0x9123683e /* btrfs */
2957 || sfs.f_type == 0x52654973 /* reiser3 */ 4465 || sfs.f_type == 0x52654973 /* reiser3 */
2958 || sfs.f_type == 0x01021994 /* tempfs */ 4466 || sfs.f_type == 0x01021994 /* tmpfs */
2959 || sfs.f_type == 0x58465342 /* xfs */)) 4467 || sfs.f_type == 0x58465342 /* xfs */))
2960 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4468 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
2961 else 4469 else
2962 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4470 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2963 } 4471 }
… …
2984 if (!pend || pend == path) 4492 if (!pend || pend == path)
2985 break; 4493 break;
2986 4494
2987 *pend = 0; 4495 *pend = 0;
2988 w->wd = inotify_add_watch (fs_fd, path, mask); 4496 w->wd = inotify_add_watch (fs_fd, path, mask);
2989 } 4497 }
2990 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 4498 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2991 } 4499 }
2992 } 4500 }
2993 4501
2994 if (w->wd >= 0) 4502 if (w->wd >= 0)
… …
2998 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4506 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2999 ev_timer_again (EV_A_ &w->timer); 4507 ev_timer_again (EV_A_ &w->timer);
3000 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4508 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3001} 4509}
3002 4510
3003static void noinline 4511ecb_noinline
4512static void
3004infy_del (EV_P_ ev_stat *w) 4513infy_del (EV_P_ ev_stat *w)
3005{ 4514{
3006 int slot; 4515 int slot;
3007 int wd = w->wd; 4516 int wd = w->wd;
3008 4517
… …
3015 4524
3016 /* remove this watcher, if others are watching it, they will rearm */ 4525 /* remove this watcher, if others are watching it, they will rearm */
3017 inotify_rm_watch (fs_fd, wd); 4526 inotify_rm_watch (fs_fd, wd);
3018} 4527}
3019 4528
3020static void noinline 4529ecb_noinline
4530static void
3021infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4531infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
3022{ 4532{
3023 if (slot < 0) 4533 if (slot < 0)
3024 /* overflow, need to check for all hash slots */ 4534 /* overflow, need to check for all hash slots */
3025 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4535 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
3061 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4571 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3062 ofs += sizeof (struct inotify_event) + ev->len; 4572 ofs += sizeof (struct inotify_event) + ev->len;
3063 } 4573 }
3064} 4574}
3065 4575
3066inline_size unsigned int
3067ev_linux_version (void)
3068{
3069 struct utsname buf;
3070 unsigned int v;
3071 int i;
3072 char *p = buf.release;
3073
3074 if (uname (&buf))
3075 return 0;
3076
3077 for (i = 3+1; --i; )
3078 {
3079 unsigned int c = 0;
3080
3081 for (;;)
3082 {
3083 if (*p >= '0' && *p <= '9')
3084 c = c * 10 + *p++ - '0';
3085 else
3086 {
3087 p += *p == '.';
3088 break;
3089 }
3090 }
3091
3092 v = (v << 8) | c;
3093 }
3094
3095 return v;
3096}
3097
3098inline_size void 4576inline_size ecb_cold
4577void
3099ev_check_2625 (EV_P) 4578ev_check_2625 (EV_P)
3100{ 4579{
3101 /* kernels < 2.6.25 are borked 4580 /* kernels < 2.6.25 are borked
3102 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4581 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3103 */ 4582 */
… …
3108} 4587}
3109 4588
3110inline_size int 4589inline_size int
3111infy_newfd (void) 4590infy_newfd (void)
3112{ 4591{
3113#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4592#if defined IN_CLOEXEC && defined IN_NONBLOCK
3114 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4593 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3115 if (fd >= 0) 4594 if (fd >= 0)
3116 return fd; 4595 return fd;
3117#endif 4596#endif
3118 return inotify_init (); 4597 return inotify_init ();
… …
3193#else 4672#else
3194# define EV_LSTAT(p,b) lstat (p, b) 4673# define EV_LSTAT(p,b) lstat (p, b)
3195#endif 4674#endif
3196 4675
3197void 4676void
3198ev_stat_stat (EV_P_ ev_stat *w) 4677ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
3199{ 4678{
3200 if (lstat (w->path, &w->attr) < 0) 4679 if (lstat (w->path, &w->attr) < 0)
3201 w->attr.st_nlink = 0; 4680 w->attr.st_nlink = 0;
3202 else if (!w->attr.st_nlink) 4681 else if (!w->attr.st_nlink)
3203 w->attr.st_nlink = 1; 4682 w->attr.st_nlink = 1;
3204} 4683}
3205 4684
3206static void noinline 4685ecb_noinline
4686static void
3207stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4687stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3208{ 4688{
3209 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4689 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3210 4690
3211 ev_statdata prev = w->attr; 4691 ev_statdata prev = w->attr;
… …
3242 ev_feed_event (EV_A_ w, EV_STAT); 4722 ev_feed_event (EV_A_ w, EV_STAT);
3243 } 4723 }
3244} 4724}
3245 4725
3246void 4726void
3247ev_stat_start (EV_P_ ev_stat *w) 4727ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
3248{ 4728{
3249 if (expect_false (ev_is_active (w))) 4729 if (ecb_expect_false (ev_is_active (w)))
3250 return; 4730 return;
3251 4731
3252 ev_stat_stat (EV_A_ w); 4732 ev_stat_stat (EV_A_ w);
3253 4733
3254 if (w->interval < MIN_STAT_INTERVAL && w->interval) 4734 if (w->interval < MIN_STAT_INTERVAL && w->interval)
… …
3273 4753
3274 EV_FREQUENT_CHECK; 4754 EV_FREQUENT_CHECK;
3275} 4755}
3276 4756
3277void 4757void
3278ev_stat_stop (EV_P_ ev_stat *w) 4758ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
3279{ 4759{
3280 clear_pending (EV_A_ (W)w); 4760 clear_pending (EV_A_ (W)w);
3281 if (expect_false (!ev_is_active (w))) 4761 if (ecb_expect_false (!ev_is_active (w)))
3282 return; 4762 return;
3283 4763
3284 EV_FREQUENT_CHECK; 4764 EV_FREQUENT_CHECK;
3285 4765
3286#if EV_USE_INOTIFY 4766#if EV_USE_INOTIFY
… …
3299} 4779}
3300#endif 4780#endif
3301 4781
3302#if EV_IDLE_ENABLE 4782#if EV_IDLE_ENABLE
3303void 4783void
3304ev_idle_start (EV_P_ ev_idle *w) 4784ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
3305{ 4785{
3306 if (expect_false (ev_is_active (w))) 4786 if (ecb_expect_false (ev_is_active (w)))
3307 return; 4787 return;
3308 4788
3309 pri_adjust (EV_A_ (W)w); 4789 pri_adjust (EV_A_ (W)w);
3310 4790
3311 EV_FREQUENT_CHECK; 4791 EV_FREQUENT_CHECK;
… …
3314 int active = ++idlecnt [ABSPRI (w)]; 4794 int active = ++idlecnt [ABSPRI (w)];
3315 4795
3316 ++idleall; 4796 ++idleall;
3317 ev_start (EV_A_ (W)w, active); 4797 ev_start (EV_A_ (W)w, active);
3318 4798
3319 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 4799 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
3320 idles [ABSPRI (w)][active - 1] = w; 4800 idles [ABSPRI (w)][active - 1] = w;
3321 } 4801 }
3322 4802
3323 EV_FREQUENT_CHECK; 4803 EV_FREQUENT_CHECK;
3324} 4804}
3325 4805
3326void 4806void
3327ev_idle_stop (EV_P_ ev_idle *w) 4807ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
3328{ 4808{
3329 clear_pending (EV_A_ (W)w); 4809 clear_pending (EV_A_ (W)w);
3330 if (expect_false (!ev_is_active (w))) 4810 if (ecb_expect_false (!ev_is_active (w)))
3331 return; 4811 return;
3332 4812
3333 EV_FREQUENT_CHECK; 4813 EV_FREQUENT_CHECK;
3334 4814
3335 { 4815 {
… …
3346} 4826}
3347#endif 4827#endif
3348 4828
3349#if EV_PREPARE_ENABLE 4829#if EV_PREPARE_ENABLE
3350void 4830void
3351ev_prepare_start (EV_P_ ev_prepare *w) 4831ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
3352{ 4832{
3353 if (expect_false (ev_is_active (w))) 4833 if (ecb_expect_false (ev_is_active (w)))
3354 return; 4834 return;
3355 4835
3356 EV_FREQUENT_CHECK; 4836 EV_FREQUENT_CHECK;
3357 4837
3358 ev_start (EV_A_ (W)w, ++preparecnt); 4838 ev_start (EV_A_ (W)w, ++preparecnt);
3359 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4839 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
3360 prepares [preparecnt - 1] = w; 4840 prepares [preparecnt - 1] = w;
3361 4841
3362 EV_FREQUENT_CHECK; 4842 EV_FREQUENT_CHECK;
3363} 4843}
3364 4844
3365void 4845void
3366ev_prepare_stop (EV_P_ ev_prepare *w) 4846ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
3367{ 4847{
3368 clear_pending (EV_A_ (W)w); 4848 clear_pending (EV_A_ (W)w);
3369 if (expect_false (!ev_is_active (w))) 4849 if (ecb_expect_false (!ev_is_active (w)))
3370 return; 4850 return;
3371 4851
3372 EV_FREQUENT_CHECK; 4852 EV_FREQUENT_CHECK;
3373 4853
3374 { 4854 {
… …
3384} 4864}
3385#endif 4865#endif
3386 4866
3387#if EV_CHECK_ENABLE 4867#if EV_CHECK_ENABLE
3388void 4868void
3389ev_check_start (EV_P_ ev_check *w) 4869ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
3390{ 4870{
3391 if (expect_false (ev_is_active (w))) 4871 if (ecb_expect_false (ev_is_active (w)))
3392 return; 4872 return;
3393 4873
3394 EV_FREQUENT_CHECK; 4874 EV_FREQUENT_CHECK;
3395 4875
3396 ev_start (EV_A_ (W)w, ++checkcnt); 4876 ev_start (EV_A_ (W)w, ++checkcnt);
3397 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 4877 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
3398 checks [checkcnt - 1] = w; 4878 checks [checkcnt - 1] = w;
3399 4879
3400 EV_FREQUENT_CHECK; 4880 EV_FREQUENT_CHECK;
3401} 4881}
3402 4882
3403void 4883void
3404ev_check_stop (EV_P_ ev_check *w) 4884ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
3405{ 4885{
3406 clear_pending (EV_A_ (W)w); 4886 clear_pending (EV_A_ (W)w);
3407 if (expect_false (!ev_is_active (w))) 4887 if (ecb_expect_false (!ev_is_active (w)))
3408 return; 4888 return;
3409 4889
3410 EV_FREQUENT_CHECK; 4890 EV_FREQUENT_CHECK;
3411 4891
3412 { 4892 {
… …
3421 EV_FREQUENT_CHECK; 4901 EV_FREQUENT_CHECK;
3422} 4902}
3423#endif 4903#endif
3424 4904
3425#if EV_EMBED_ENABLE 4905#if EV_EMBED_ENABLE
3426void noinline 4906ecb_noinline
4907void
3427ev_embed_sweep (EV_P_ ev_embed *w) 4908ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
3428{ 4909{
3429 ev_loop (w->other, EVLOOP_NONBLOCK); 4910 ev_run (w->other, EVRUN_NOWAIT);
3430} 4911}
3431 4912
3432static void 4913static void
3433embed_io_cb (EV_P_ ev_io *io, int revents) 4914embed_io_cb (EV_P_ ev_io *io, int revents)
3434{ 4915{
3435 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4916 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3436 4917
3437 if (ev_cb (w)) 4918 if (ev_cb (w))
3438 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4919 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3439 else 4920 else
3440 ev_loop (w->other, EVLOOP_NONBLOCK); 4921 ev_run (w->other, EVRUN_NOWAIT);
3441} 4922}
3442 4923
3443static void 4924static void
3444embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4925embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3445{ 4926{
… …
3449 EV_P = w->other; 4930 EV_P = w->other;
3450 4931
3451 while (fdchangecnt) 4932 while (fdchangecnt)
3452 { 4933 {
3453 fd_reify (EV_A); 4934 fd_reify (EV_A);
3454 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4935 ev_run (EV_A_ EVRUN_NOWAIT);
3455 } 4936 }
3456 } 4937 }
3457} 4938}
3458 4939
3459static void 4940static void
… …
3465 4946
3466 { 4947 {
3467 EV_P = w->other; 4948 EV_P = w->other;
3468 4949
3469 ev_loop_fork (EV_A); 4950 ev_loop_fork (EV_A);
3470 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4951 ev_run (EV_A_ EVRUN_NOWAIT);
3471 } 4952 }
3472 4953
3473 ev_embed_start (EV_A_ w); 4954 ev_embed_start (EV_A_ w);
3474} 4955}
3475 4956
… …
3480 ev_idle_stop (EV_A_ idle); 4961 ev_idle_stop (EV_A_ idle);
3481} 4962}
3482#endif 4963#endif
3483 4964
3484void 4965void
3485ev_embed_start (EV_P_ ev_embed *w) 4966ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
3486{ 4967{
3487 if (expect_false (ev_is_active (w))) 4968 if (ecb_expect_false (ev_is_active (w)))
3488 return; 4969 return;
3489 4970
3490 { 4971 {
3491 EV_P = w->other; 4972 EV_P = w->other;
3492 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4973 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
… …
3511 4992
3512 EV_FREQUENT_CHECK; 4993 EV_FREQUENT_CHECK;
3513} 4994}
3514 4995
3515void 4996void
3516ev_embed_stop (EV_P_ ev_embed *w) 4997ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
3517{ 4998{
3518 clear_pending (EV_A_ (W)w); 4999 clear_pending (EV_A_ (W)w);
3519 if (expect_false (!ev_is_active (w))) 5000 if (ecb_expect_false (!ev_is_active (w)))
3520 return; 5001 return;
3521 5002
3522 EV_FREQUENT_CHECK; 5003 EV_FREQUENT_CHECK;
3523 5004
3524 ev_io_stop (EV_A_ &w->io); 5005 ev_io_stop (EV_A_ &w->io);
… …
3531} 5012}
3532#endif 5013#endif
3533 5014
3534#if EV_FORK_ENABLE 5015#if EV_FORK_ENABLE
3535void 5016void
3536ev_fork_start (EV_P_ ev_fork *w) 5017ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
3537{ 5018{
3538 if (expect_false (ev_is_active (w))) 5019 if (ecb_expect_false (ev_is_active (w)))
3539 return; 5020 return;
3540 5021
3541 EV_FREQUENT_CHECK; 5022 EV_FREQUENT_CHECK;
3542 5023
3543 ev_start (EV_A_ (W)w, ++forkcnt); 5024 ev_start (EV_A_ (W)w, ++forkcnt);
3544 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 5025 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
3545 forks [forkcnt - 1] = w; 5026 forks [forkcnt - 1] = w;
3546 5027
3547 EV_FREQUENT_CHECK; 5028 EV_FREQUENT_CHECK;
3548} 5029}
3549 5030
3550void 5031void
3551ev_fork_stop (EV_P_ ev_fork *w) 5032ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
3552{ 5033{
3553 clear_pending (EV_A_ (W)w); 5034 clear_pending (EV_A_ (W)w);
3554 if (expect_false (!ev_is_active (w))) 5035 if (ecb_expect_false (!ev_is_active (w)))
3555 return; 5036 return;
3556 5037
3557 EV_FREQUENT_CHECK; 5038 EV_FREQUENT_CHECK;
3558 5039
3559 { 5040 {
… …
3567 5048
3568 EV_FREQUENT_CHECK; 5049 EV_FREQUENT_CHECK;
3569} 5050}
3570#endif 5051#endif
3571 5052
5053#if EV_CLEANUP_ENABLE
5054void
5055ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
5056{
5057 if (ecb_expect_false (ev_is_active (w)))
5058 return;
5059
5060 EV_FREQUENT_CHECK;
5061
5062 ev_start (EV_A_ (W)w, ++cleanupcnt);
5063 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
5064 cleanups [cleanupcnt - 1] = w;
5065
5066 /* cleanup watchers should never keep a refcount on the loop */
5067 ev_unref (EV_A);
5068 EV_FREQUENT_CHECK;
5069}
5070
5071void
5072ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
5073{
5074 clear_pending (EV_A_ (W)w);
5075 if (ecb_expect_false (!ev_is_active (w)))
5076 return;
5077
5078 EV_FREQUENT_CHECK;
5079 ev_ref (EV_A);
5080
5081 {
5082 int active = ev_active (w);
5083
5084 cleanups [active - 1] = cleanups [--cleanupcnt];
5085 ev_active (cleanups [active - 1]) = active;
5086 }
5087
5088 ev_stop (EV_A_ (W)w);
5089
5090 EV_FREQUENT_CHECK;
5091}
5092#endif
5093
3572#if EV_ASYNC_ENABLE 5094#if EV_ASYNC_ENABLE
3573void 5095void
3574ev_async_start (EV_P_ ev_async *w) 5096ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
3575{ 5097{
3576 if (expect_false (ev_is_active (w))) 5098 if (ecb_expect_false (ev_is_active (w)))
3577 return; 5099 return;
3578 5100
5101 w->sent = 0;
5102
3579 evpipe_init (EV_A); 5103 evpipe_init (EV_A);
3580 5104
3581 EV_FREQUENT_CHECK; 5105 EV_FREQUENT_CHECK;
3582 5106
3583 ev_start (EV_A_ (W)w, ++asynccnt); 5107 ev_start (EV_A_ (W)w, ++asynccnt);
3584 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 5108 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
3585 asyncs [asynccnt - 1] = w; 5109 asyncs [asynccnt - 1] = w;
3586 5110
3587 EV_FREQUENT_CHECK; 5111 EV_FREQUENT_CHECK;
3588} 5112}
3589 5113
3590void 5114void
3591ev_async_stop (EV_P_ ev_async *w) 5115ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
3592{ 5116{
3593 clear_pending (EV_A_ (W)w); 5117 clear_pending (EV_A_ (W)w);
3594 if (expect_false (!ev_is_active (w))) 5118 if (ecb_expect_false (!ev_is_active (w)))
3595 return; 5119 return;
3596 5120
3597 EV_FREQUENT_CHECK; 5121 EV_FREQUENT_CHECK;
3598 5122
3599 { 5123 {
… …
3607 5131
3608 EV_FREQUENT_CHECK; 5132 EV_FREQUENT_CHECK;
3609} 5133}
3610 5134
3611void 5135void
3612ev_async_send (EV_P_ ev_async *w) 5136ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
3613{ 5137{
3614 w->sent = 1; 5138 w->sent = 1;
3615 evpipe_write (EV_A_ &async_pending); 5139 evpipe_write (EV_A_ &async_pending);
3616} 5140}
3617#endif 5141#endif
… …
3654 5178
3655 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5179 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3656} 5180}
3657 5181
3658void 5182void
3659ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 5183ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
3660{ 5184{
3661 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5185 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3662
3663 if (expect_false (!once))
3664 {
3665 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3666 return;
3667 }
3668 5186
3669 once->cb = cb; 5187 once->cb = cb;
3670 once->arg = arg; 5188 once->arg = arg;
3671 5189
3672 ev_init (&once->io, once_cb_io); 5190 ev_init (&once->io, once_cb_io);
… …
3685} 5203}
3686 5204
3687/*****************************************************************************/ 5205/*****************************************************************************/
3688 5206
3689#if EV_WALK_ENABLE 5207#if EV_WALK_ENABLE
5208ecb_cold
3690void 5209void
3691ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 5210ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
3692{ 5211{
3693 int i, j; 5212 int i, j;
3694 ev_watcher_list *wl, *wn; 5213 ev_watcher_list *wl, *wn;
3695 5214
3696 if (types & (EV_IO | EV_EMBED)) 5215 if (types & (EV_IO | EV_EMBED))
… …
3739 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 5258 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3740#endif 5259#endif
3741 5260
3742#if EV_IDLE_ENABLE 5261#if EV_IDLE_ENABLE
3743 if (types & EV_IDLE) 5262 if (types & EV_IDLE)
3744 for (j = NUMPRI; i--; ) 5263 for (j = NUMPRI; j--; )
3745 for (i = idlecnt [j]; i--; ) 5264 for (i = idlecnt [j]; i--; )
3746 cb (EV_A_ EV_IDLE, idles [j][i]); 5265 cb (EV_A_ EV_IDLE, idles [j][i]);
3747#endif 5266#endif
3748 5267
3749#if EV_FORK_ENABLE 5268#if EV_FORK_ENABLE
… …
3802 5321
3803#if EV_MULTIPLICITY 5322#if EV_MULTIPLICITY
3804 #include "ev_wrap.h" 5323 #include "ev_wrap.h"
3805#endif 5324#endif
3806 5325
3807#ifdef __cplusplus
3808}
3809#endif
3810

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