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Comparing libev/ev.c (file contents):
Revision 1.347 by root, Fri Oct 15 22:44:41 2010 UTC vs.
Revision 1.509 by root, Sat Aug 17 05:30:16 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#ifndef EV_TS_CONST
550# define EV_TS_CONST(nv) nv
551# define EV_TS_TO_MSEC(a) a * 1e3 + 0.9999
552# 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) 553# 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; tv.tv_nsec = (long)((t - tv.tv_sec) * 1e9); } while (0) 554# define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
555# define EV_TV_GET(tv) ((tv).tv_sec + (tv).tv_usec * 1e-6)
556# define EV_TS_GET(ts) ((ts).tv_sec + (ts).tv_nsec * 1e-9)
557#endif
476 558
559/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
560/* ECB.H BEGIN */
561/*
562 * libecb - http://software.schmorp.de/pkg/libecb
563 *
564 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
565 * Copyright (©) 2011 Emanuele Giaquinta
566 * All rights reserved.
567 *
568 * Redistribution and use in source and binary forms, with or without modifica-
569 * tion, are permitted provided that the following conditions are met:
570 *
571 * 1. Redistributions of source code must retain the above copyright notice,
572 * this list of conditions and the following disclaimer.
573 *
574 * 2. Redistributions in binary form must reproduce the above copyright
575 * notice, this list of conditions and the following disclaimer in the
576 * documentation and/or other materials provided with the distribution.
577 *
578 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
579 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
580 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
581 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
582 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
583 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
584 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
585 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
586 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
587 * OF THE POSSIBILITY OF SUCH DAMAGE.
588 *
589 * Alternatively, the contents of this file may be used under the terms of
590 * the GNU General Public License ("GPL") version 2 or any later version,
591 * in which case the provisions of the GPL are applicable instead of
592 * the above. If you wish to allow the use of your version of this file
593 * only under the terms of the GPL and not to allow others to use your
594 * version of this file under the BSD license, indicate your decision
595 * by deleting the provisions above and replace them with the notice
596 * and other provisions required by the GPL. If you do not delete the
597 * provisions above, a recipient may use your version of this file under
598 * either the BSD or the GPL.
599 */
600
601#ifndef ECB_H
602#define ECB_H
603
604/* 16 bits major, 16 bits minor */
605#define ECB_VERSION 0x00010006
606
607#ifdef _WIN32
608 typedef signed char int8_t;
609 typedef unsigned char uint8_t;
610 typedef signed short int16_t;
611 typedef unsigned short uint16_t;
612 typedef signed int int32_t;
613 typedef unsigned int uint32_t;
477#if __GNUC__ >= 4 614 #if __GNUC__
478# define expect(expr,value) __builtin_expect ((expr),(value)) 615 typedef signed long long int64_t;
479# define noinline __attribute__ ((noinline)) 616 typedef unsigned long long uint64_t;
617 #else /* _MSC_VER || __BORLANDC__ */
618 typedef signed __int64 int64_t;
619 typedef unsigned __int64 uint64_t;
620 #endif
621 #ifdef _WIN64
622 #define ECB_PTRSIZE 8
623 typedef uint64_t uintptr_t;
624 typedef int64_t intptr_t;
625 #else
626 #define ECB_PTRSIZE 4
627 typedef uint32_t uintptr_t;
628 typedef int32_t intptr_t;
629 #endif
480#else 630#else
481# define expect(expr,value) (expr) 631 #include <inttypes.h>
482# define noinline 632 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
483# if __STDC_VERSION__ < 199901L && __GNUC__ < 2 633 #define ECB_PTRSIZE 8
484# define inline 634 #else
635 #define ECB_PTRSIZE 4
636 #endif
485# endif 637#endif
638
639#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
640#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
641
642/* work around x32 idiocy by defining proper macros */
643#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
644 #if _ILP32
645 #define ECB_AMD64_X32 1
646 #else
647 #define ECB_AMD64 1
486#endif 648 #endif
649#endif
487 650
651/* many compilers define _GNUC_ to some versions but then only implement
652 * what their idiot authors think are the "more important" extensions,
653 * causing enormous grief in return for some better fake benchmark numbers.
654 * or so.
655 * we try to detect these and simply assume they are not gcc - if they have
656 * an issue with that they should have done it right in the first place.
657 */
658#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
659 #define ECB_GCC_VERSION(major,minor) 0
660#else
661 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
662#endif
663
664#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
665
666#if __clang__ && defined __has_builtin
667 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
668#else
669 #define ECB_CLANG_BUILTIN(x) 0
670#endif
671
672#if __clang__ && defined __has_extension
673 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
674#else
675 #define ECB_CLANG_EXTENSION(x) 0
676#endif
677
678#define ECB_CPP (__cplusplus+0)
679#define ECB_CPP11 (__cplusplus >= 201103L)
680#define ECB_CPP14 (__cplusplus >= 201402L)
681#define ECB_CPP17 (__cplusplus >= 201703L)
682
683#if ECB_CPP
684 #define ECB_C 0
685 #define ECB_STDC_VERSION 0
686#else
687 #define ECB_C 1
688 #define ECB_STDC_VERSION __STDC_VERSION__
689#endif
690
691#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
692#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
693#define ECB_C17 (ECB_STDC_VERSION >= 201710L)
694
695#if ECB_CPP
696 #define ECB_EXTERN_C extern "C"
697 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
698 #define ECB_EXTERN_C_END }
699#else
700 #define ECB_EXTERN_C extern
701 #define ECB_EXTERN_C_BEG
702 #define ECB_EXTERN_C_END
703#endif
704
705/*****************************************************************************/
706
707/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
708/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
709
710#if ECB_NO_THREADS
711 #define ECB_NO_SMP 1
712#endif
713
714#if ECB_NO_SMP
715 #define ECB_MEMORY_FENCE do { } while (0)
716#endif
717
718/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
719#if __xlC__ && ECB_CPP
720 #include <builtins.h>
721#endif
722
723#if 1400 <= _MSC_VER
724 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
725#endif
726
727#ifndef ECB_MEMORY_FENCE
728 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
729 #define ECB_MEMORY_FENCE_RELAXED __asm__ __volatile__ ("" : : : "memory")
730 #if __i386 || __i386__
731 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
732 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
733 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
734 #elif ECB_GCC_AMD64
735 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
736 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
737 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
738 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
739 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
740 #elif defined __ARM_ARCH_2__ \
741 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
742 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
743 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
744 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
745 || defined __ARM_ARCH_5TEJ__
746 /* should not need any, unless running old code on newer cpu - arm doesn't support that */
747 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
748 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
749 || defined __ARM_ARCH_6T2__
750 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
751 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
752 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
753 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
754 #elif __aarch64__
755 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
756 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
757 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
758 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
759 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
760 #elif defined __s390__ || defined __s390x__
761 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
762 #elif defined __mips__
763 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
764 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
765 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
766 #elif defined __alpha__
767 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
768 #elif defined __hppa__
769 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
770 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
771 #elif defined __ia64__
772 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
773 #elif defined __m68k__
774 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
775 #elif defined __m88k__
776 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
777 #elif defined __sh__
778 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
779 #endif
780 #endif
781#endif
782
783#ifndef ECB_MEMORY_FENCE
784 #if ECB_GCC_VERSION(4,7)
785 /* see comment below (stdatomic.h) about the C11 memory model. */
786 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
787 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
788 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
789 #define ECB_MEMORY_FENCE_RELAXED __atomic_thread_fence (__ATOMIC_RELAXED)
790
791 #elif ECB_CLANG_EXTENSION(c_atomic)
792 /* see comment below (stdatomic.h) about the C11 memory model. */
793 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
794 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
795 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
796 #define ECB_MEMORY_FENCE_RELAXED __c11_atomic_thread_fence (__ATOMIC_RELAXED)
797
798 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
799 #define ECB_MEMORY_FENCE __sync_synchronize ()
800 #elif _MSC_VER >= 1500 /* VC++ 2008 */
801 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
802 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
803 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
804 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
805 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
806 #elif _MSC_VER >= 1400 /* VC++ 2005 */
807 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
808 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
809 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
810 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
811 #elif defined _WIN32
812 #include <WinNT.h>
813 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
814 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
815 #include <mbarrier.h>
816 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
817 #define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier ()
818 #define ECB_MEMORY_FENCE_RELEASE __machine_rel_barrier ()
819 #define ECB_MEMORY_FENCE_RELAXED __compiler_barrier ()
820 #elif __xlC__
821 #define ECB_MEMORY_FENCE __sync ()
822 #endif
823#endif
824
825#ifndef ECB_MEMORY_FENCE
826 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
827 /* we assume that these memory fences work on all variables/all memory accesses, */
828 /* not just C11 atomics and atomic accesses */
829 #include <stdatomic.h>
830 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
831 #define ECB_MEMORY_FENCE_ACQUIRE atomic_thread_fence (memory_order_acquire)
832 #define ECB_MEMORY_FENCE_RELEASE atomic_thread_fence (memory_order_release)
833 #endif
834#endif
835
836#ifndef ECB_MEMORY_FENCE
837 #if !ECB_AVOID_PTHREADS
838 /*
839 * if you get undefined symbol references to pthread_mutex_lock,
840 * or failure to find pthread.h, then you should implement
841 * the ECB_MEMORY_FENCE operations for your cpu/compiler
842 * OR provide pthread.h and link against the posix thread library
843 * of your system.
844 */
845 #include <pthread.h>
846 #define ECB_NEEDS_PTHREADS 1
847 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
848
849 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
850 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
851 #endif
852#endif
853
854#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
855 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
856#endif
857
858#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
859 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
860#endif
861
862#if !defined ECB_MEMORY_FENCE_RELAXED && defined ECB_MEMORY_FENCE
863 #define ECB_MEMORY_FENCE_RELAXED ECB_MEMORY_FENCE /* very heavy-handed */
864#endif
865
866/*****************************************************************************/
867
868#if ECB_CPP
869 #define ecb_inline static inline
870#elif ECB_GCC_VERSION(2,5)
871 #define ecb_inline static __inline__
872#elif ECB_C99
873 #define ecb_inline static inline
874#else
875 #define ecb_inline static
876#endif
877
878#if ECB_GCC_VERSION(3,3)
879 #define ecb_restrict __restrict__
880#elif ECB_C99
881 #define ecb_restrict restrict
882#else
883 #define ecb_restrict
884#endif
885
886typedef int ecb_bool;
887
888#define ECB_CONCAT_(a, b) a ## b
889#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
890#define ECB_STRINGIFY_(a) # a
891#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
892#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
893
894#define ecb_function_ ecb_inline
895
896#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
897 #define ecb_attribute(attrlist) __attribute__ (attrlist)
898#else
899 #define ecb_attribute(attrlist)
900#endif
901
902#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
903 #define ecb_is_constant(expr) __builtin_constant_p (expr)
904#else
905 /* possible C11 impl for integral types
906 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
907 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
908
909 #define ecb_is_constant(expr) 0
910#endif
911
912#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
913 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
914#else
915 #define ecb_expect(expr,value) (expr)
916#endif
917
918#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
919 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
920#else
921 #define ecb_prefetch(addr,rw,locality)
922#endif
923
924/* no emulation for ecb_decltype */
925#if ECB_CPP11
926 // older implementations might have problems with decltype(x)::type, work around it
927 template<class T> struct ecb_decltype_t { typedef T type; };
928 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
929#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
930 #define ecb_decltype(x) __typeof__ (x)
931#endif
932
933#if _MSC_VER >= 1300
934 #define ecb_deprecated __declspec (deprecated)
935#else
936 #define ecb_deprecated ecb_attribute ((__deprecated__))
937#endif
938
939#if _MSC_VER >= 1500
940 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
941#elif ECB_GCC_VERSION(4,5)
942 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
943#else
944 #define ecb_deprecated_message(msg) ecb_deprecated
945#endif
946
947#if _MSC_VER >= 1400
948 #define ecb_noinline __declspec (noinline)
949#else
950 #define ecb_noinline ecb_attribute ((__noinline__))
951#endif
952
953#define ecb_unused ecb_attribute ((__unused__))
954#define ecb_const ecb_attribute ((__const__))
955#define ecb_pure ecb_attribute ((__pure__))
956
957#if ECB_C11 || __IBMC_NORETURN
958 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
959 #define ecb_noreturn _Noreturn
960#elif ECB_CPP11
961 #define ecb_noreturn [[noreturn]]
962#elif _MSC_VER >= 1200
963 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
964 #define ecb_noreturn __declspec (noreturn)
965#else
966 #define ecb_noreturn ecb_attribute ((__noreturn__))
967#endif
968
969#if ECB_GCC_VERSION(4,3)
970 #define ecb_artificial ecb_attribute ((__artificial__))
971 #define ecb_hot ecb_attribute ((__hot__))
972 #define ecb_cold ecb_attribute ((__cold__))
973#else
974 #define ecb_artificial
975 #define ecb_hot
976 #define ecb_cold
977#endif
978
979/* put around conditional expressions if you are very sure that the */
980/* expression is mostly true or mostly false. note that these return */
981/* booleans, not the expression. */
488#define expect_false(expr) expect ((expr) != 0, 0) 982#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
489#define expect_true(expr) expect ((expr) != 0, 1) 983#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
984/* for compatibility to the rest of the world */
985#define ecb_likely(expr) ecb_expect_true (expr)
986#define ecb_unlikely(expr) ecb_expect_false (expr)
987
988/* count trailing zero bits and count # of one bits */
989#if ECB_GCC_VERSION(3,4) \
990 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
991 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
992 && ECB_CLANG_BUILTIN(__builtin_popcount))
993 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
994 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
995 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
996 #define ecb_ctz32(x) __builtin_ctz (x)
997 #define ecb_ctz64(x) __builtin_ctzll (x)
998 #define ecb_popcount32(x) __builtin_popcount (x)
999 /* no popcountll */
1000#else
1001 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
1002 ecb_function_ ecb_const int
1003 ecb_ctz32 (uint32_t x)
1004 {
1005#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1006 unsigned long r;
1007 _BitScanForward (&r, x);
1008 return (int)r;
1009#else
1010 int r = 0;
1011
1012 x &= ~x + 1; /* this isolates the lowest bit */
1013
1014#if ECB_branchless_on_i386
1015 r += !!(x & 0xaaaaaaaa) << 0;
1016 r += !!(x & 0xcccccccc) << 1;
1017 r += !!(x & 0xf0f0f0f0) << 2;
1018 r += !!(x & 0xff00ff00) << 3;
1019 r += !!(x & 0xffff0000) << 4;
1020#else
1021 if (x & 0xaaaaaaaa) r += 1;
1022 if (x & 0xcccccccc) r += 2;
1023 if (x & 0xf0f0f0f0) r += 4;
1024 if (x & 0xff00ff00) r += 8;
1025 if (x & 0xffff0000) r += 16;
1026#endif
1027
1028 return r;
1029#endif
1030 }
1031
1032 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
1033 ecb_function_ ecb_const int
1034 ecb_ctz64 (uint64_t x)
1035 {
1036#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1037 unsigned long r;
1038 _BitScanForward64 (&r, x);
1039 return (int)r;
1040#else
1041 int shift = x & 0xffffffff ? 0 : 32;
1042 return ecb_ctz32 (x >> shift) + shift;
1043#endif
1044 }
1045
1046 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
1047 ecb_function_ ecb_const int
1048 ecb_popcount32 (uint32_t x)
1049 {
1050 x -= (x >> 1) & 0x55555555;
1051 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
1052 x = ((x >> 4) + x) & 0x0f0f0f0f;
1053 x *= 0x01010101;
1054
1055 return x >> 24;
1056 }
1057
1058 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
1059 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
1060 {
1061#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1062 unsigned long r;
1063 _BitScanReverse (&r, x);
1064 return (int)r;
1065#else
1066 int r = 0;
1067
1068 if (x >> 16) { x >>= 16; r += 16; }
1069 if (x >> 8) { x >>= 8; r += 8; }
1070 if (x >> 4) { x >>= 4; r += 4; }
1071 if (x >> 2) { x >>= 2; r += 2; }
1072 if (x >> 1) { r += 1; }
1073
1074 return r;
1075#endif
1076 }
1077
1078 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
1079 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
1080 {
1081#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1082 unsigned long r;
1083 _BitScanReverse64 (&r, x);
1084 return (int)r;
1085#else
1086 int r = 0;
1087
1088 if (x >> 32) { x >>= 32; r += 32; }
1089
1090 return r + ecb_ld32 (x);
1091#endif
1092 }
1093#endif
1094
1095ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
1096ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
1097ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
1098ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
1099
1100ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
1101ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
1102{
1103 return ( (x * 0x0802U & 0x22110U)
1104 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
1105}
1106
1107ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
1108ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
1109{
1110 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
1111 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
1112 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
1113 x = ( x >> 8 ) | ( x << 8);
1114
1115 return x;
1116}
1117
1118ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
1119ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
1120{
1121 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
1122 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
1123 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
1124 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
1125 x = ( x >> 16 ) | ( x << 16);
1126
1127 return x;
1128}
1129
1130/* popcount64 is only available on 64 bit cpus as gcc builtin */
1131/* so for this version we are lazy */
1132ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
1133ecb_function_ ecb_const int
1134ecb_popcount64 (uint64_t x)
1135{
1136 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
1137}
1138
1139ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
1140ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
1141ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
1142ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
1143ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
1144ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
1145ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
1146ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
1147
1148ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
1149ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
1150ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
1151ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
1152ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
1153ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
1154ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
1155ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
1156
1157#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1158 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1159 #define ecb_bswap16(x) __builtin_bswap16 (x)
1160 #else
1161 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1162 #endif
1163 #define ecb_bswap32(x) __builtin_bswap32 (x)
1164 #define ecb_bswap64(x) __builtin_bswap64 (x)
1165#elif _MSC_VER
1166 #include <stdlib.h>
1167 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1168 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1169 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
1170#else
1171 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
1172 ecb_function_ ecb_const uint16_t
1173 ecb_bswap16 (uint16_t x)
1174 {
1175 return ecb_rotl16 (x, 8);
1176 }
1177
1178 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
1179 ecb_function_ ecb_const uint32_t
1180 ecb_bswap32 (uint32_t x)
1181 {
1182 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
1183 }
1184
1185 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
1186 ecb_function_ ecb_const uint64_t
1187 ecb_bswap64 (uint64_t x)
1188 {
1189 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
1190 }
1191#endif
1192
1193#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
1194 #define ecb_unreachable() __builtin_unreachable ()
1195#else
1196 /* this seems to work fine, but gcc always emits a warning for it :/ */
1197 ecb_inline ecb_noreturn void ecb_unreachable (void);
1198 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
1199#endif
1200
1201/* try to tell the compiler that some condition is definitely true */
1202#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
1203
1204ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
1205ecb_inline ecb_const uint32_t
1206ecb_byteorder_helper (void)
1207{
1208 /* the union code still generates code under pressure in gcc, */
1209 /* but less than using pointers, and always seems to */
1210 /* successfully return a constant. */
1211 /* the reason why we have this horrible preprocessor mess */
1212 /* is to avoid it in all cases, at least on common architectures */
1213 /* or when using a recent enough gcc version (>= 4.6) */
1214#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1215 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1216 #define ECB_LITTLE_ENDIAN 1
1217 return 0x44332211;
1218#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1219 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1220 #define ECB_BIG_ENDIAN 1
1221 return 0x11223344;
1222#else
1223 union
1224 {
1225 uint8_t c[4];
1226 uint32_t u;
1227 } u = { 0x11, 0x22, 0x33, 0x44 };
1228 return u.u;
1229#endif
1230}
1231
1232ecb_inline ecb_const ecb_bool ecb_big_endian (void);
1233ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
1234ecb_inline ecb_const ecb_bool ecb_little_endian (void);
1235ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
1236
1237#if ECB_GCC_VERSION(3,0) || ECB_C99
1238 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1239#else
1240 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1241#endif
1242
1243#if ECB_CPP
1244 template<typename T>
1245 static inline T ecb_div_rd (T val, T div)
1246 {
1247 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1248 }
1249 template<typename T>
1250 static inline T ecb_div_ru (T val, T div)
1251 {
1252 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1253 }
1254#else
1255 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1256 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1257#endif
1258
1259#if ecb_cplusplus_does_not_suck
1260 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1261 template<typename T, int N>
1262 static inline int ecb_array_length (const T (&arr)[N])
1263 {
1264 return N;
1265 }
1266#else
1267 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1268#endif
1269
1270ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1271ecb_function_ ecb_const uint32_t
1272ecb_binary16_to_binary32 (uint32_t x)
1273{
1274 unsigned int s = (x & 0x8000) << (31 - 15);
1275 int e = (x >> 10) & 0x001f;
1276 unsigned int m = x & 0x03ff;
1277
1278 if (ecb_expect_false (e == 31))
1279 /* infinity or NaN */
1280 e = 255 - (127 - 15);
1281 else if (ecb_expect_false (!e))
1282 {
1283 if (ecb_expect_true (!m))
1284 /* zero, handled by code below by forcing e to 0 */
1285 e = 0 - (127 - 15);
1286 else
1287 {
1288 /* subnormal, renormalise */
1289 unsigned int s = 10 - ecb_ld32 (m);
1290
1291 m = (m << s) & 0x3ff; /* mask implicit bit */
1292 e -= s - 1;
1293 }
1294 }
1295
1296 /* e and m now are normalised, or zero, (or inf or nan) */
1297 e += 127 - 15;
1298
1299 return s | (e << 23) | (m << (23 - 10));
1300}
1301
1302ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1303ecb_function_ ecb_const uint16_t
1304ecb_binary32_to_binary16 (uint32_t x)
1305{
1306 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1307 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1308 unsigned int m = x & 0x007fffff;
1309
1310 x &= 0x7fffffff;
1311
1312 /* if it's within range of binary16 normals, use fast path */
1313 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1314 {
1315 /* mantissa round-to-even */
1316 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1317
1318 /* handle overflow */
1319 if (ecb_expect_false (m >= 0x00800000))
1320 {
1321 m >>= 1;
1322 e += 1;
1323 }
1324
1325 return s | (e << 10) | (m >> (23 - 10));
1326 }
1327
1328 /* handle large numbers and infinity */
1329 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1330 return s | 0x7c00;
1331
1332 /* handle zero, subnormals and small numbers */
1333 if (ecb_expect_true (x < 0x38800000))
1334 {
1335 /* zero */
1336 if (ecb_expect_true (!x))
1337 return s;
1338
1339 /* handle subnormals */
1340
1341 /* too small, will be zero */
1342 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1343 return s;
1344
1345 m |= 0x00800000; /* make implicit bit explicit */
1346
1347 /* very tricky - we need to round to the nearest e (+10) bit value */
1348 {
1349 unsigned int bits = 14 - e;
1350 unsigned int half = (1 << (bits - 1)) - 1;
1351 unsigned int even = (m >> bits) & 1;
1352
1353 /* if this overflows, we will end up with a normalised number */
1354 m = (m + half + even) >> bits;
1355 }
1356
1357 return s | m;
1358 }
1359
1360 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1361 m >>= 13;
1362
1363 return s | 0x7c00 | m | !m;
1364}
1365
1366/*******************************************************************************/
1367/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1368
1369/* basically, everything uses "ieee pure-endian" floating point numbers */
1370/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1371#if 0 \
1372 || __i386 || __i386__ \
1373 || ECB_GCC_AMD64 \
1374 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1375 || defined __s390__ || defined __s390x__ \
1376 || defined __mips__ \
1377 || defined __alpha__ \
1378 || defined __hppa__ \
1379 || defined __ia64__ \
1380 || defined __m68k__ \
1381 || defined __m88k__ \
1382 || defined __sh__ \
1383 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1384 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1385 || defined __aarch64__
1386 #define ECB_STDFP 1
1387 #include <string.h> /* for memcpy */
1388#else
1389 #define ECB_STDFP 0
1390#endif
1391
1392#ifndef ECB_NO_LIBM
1393
1394 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1395
1396 /* only the oldest of old doesn't have this one. solaris. */
1397 #ifdef INFINITY
1398 #define ECB_INFINITY INFINITY
1399 #else
1400 #define ECB_INFINITY HUGE_VAL
1401 #endif
1402
1403 #ifdef NAN
1404 #define ECB_NAN NAN
1405 #else
1406 #define ECB_NAN ECB_INFINITY
1407 #endif
1408
1409 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1410 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1411 #define ecb_frexpf(x,e) frexpf ((x), (e))
1412 #else
1413 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1414 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1415 #endif
1416
1417 /* convert a float to ieee single/binary32 */
1418 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1419 ecb_function_ ecb_const uint32_t
1420 ecb_float_to_binary32 (float x)
1421 {
1422 uint32_t r;
1423
1424 #if ECB_STDFP
1425 memcpy (&r, &x, 4);
1426 #else
1427 /* slow emulation, works for anything but -0 */
1428 uint32_t m;
1429 int e;
1430
1431 if (x == 0e0f ) return 0x00000000U;
1432 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1433 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1434 if (x != x ) return 0x7fbfffffU;
1435
1436 m = ecb_frexpf (x, &e) * 0x1000000U;
1437
1438 r = m & 0x80000000U;
1439
1440 if (r)
1441 m = -m;
1442
1443 if (e <= -126)
1444 {
1445 m &= 0xffffffU;
1446 m >>= (-125 - e);
1447 e = -126;
1448 }
1449
1450 r |= (e + 126) << 23;
1451 r |= m & 0x7fffffU;
1452 #endif
1453
1454 return r;
1455 }
1456
1457 /* converts an ieee single/binary32 to a float */
1458 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1459 ecb_function_ ecb_const float
1460 ecb_binary32_to_float (uint32_t x)
1461 {
1462 float r;
1463
1464 #if ECB_STDFP
1465 memcpy (&r, &x, 4);
1466 #else
1467 /* emulation, only works for normals and subnormals and +0 */
1468 int neg = x >> 31;
1469 int e = (x >> 23) & 0xffU;
1470
1471 x &= 0x7fffffU;
1472
1473 if (e)
1474 x |= 0x800000U;
1475 else
1476 e = 1;
1477
1478 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1479 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1480
1481 r = neg ? -r : r;
1482 #endif
1483
1484 return r;
1485 }
1486
1487 /* convert a double to ieee double/binary64 */
1488 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1489 ecb_function_ ecb_const uint64_t
1490 ecb_double_to_binary64 (double x)
1491 {
1492 uint64_t r;
1493
1494 #if ECB_STDFP
1495 memcpy (&r, &x, 8);
1496 #else
1497 /* slow emulation, works for anything but -0 */
1498 uint64_t m;
1499 int e;
1500
1501 if (x == 0e0 ) return 0x0000000000000000U;
1502 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1503 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1504 if (x != x ) return 0X7ff7ffffffffffffU;
1505
1506 m = frexp (x, &e) * 0x20000000000000U;
1507
1508 r = m & 0x8000000000000000;;
1509
1510 if (r)
1511 m = -m;
1512
1513 if (e <= -1022)
1514 {
1515 m &= 0x1fffffffffffffU;
1516 m >>= (-1021 - e);
1517 e = -1022;
1518 }
1519
1520 r |= ((uint64_t)(e + 1022)) << 52;
1521 r |= m & 0xfffffffffffffU;
1522 #endif
1523
1524 return r;
1525 }
1526
1527 /* converts an ieee double/binary64 to a double */
1528 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1529 ecb_function_ ecb_const double
1530 ecb_binary64_to_double (uint64_t x)
1531 {
1532 double r;
1533
1534 #if ECB_STDFP
1535 memcpy (&r, &x, 8);
1536 #else
1537 /* emulation, only works for normals and subnormals and +0 */
1538 int neg = x >> 63;
1539 int e = (x >> 52) & 0x7ffU;
1540
1541 x &= 0xfffffffffffffU;
1542
1543 if (e)
1544 x |= 0x10000000000000U;
1545 else
1546 e = 1;
1547
1548 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1549 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1550
1551 r = neg ? -r : r;
1552 #endif
1553
1554 return r;
1555 }
1556
1557 /* convert a float to ieee half/binary16 */
1558 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1559 ecb_function_ ecb_const uint16_t
1560 ecb_float_to_binary16 (float x)
1561 {
1562 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1563 }
1564
1565 /* convert an ieee half/binary16 to float */
1566 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1567 ecb_function_ ecb_const float
1568 ecb_binary16_to_float (uint16_t x)
1569 {
1570 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1571 }
1572
1573#endif
1574
1575#endif
1576
1577/* ECB.H END */
1578
1579#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1580/* if your architecture doesn't need memory fences, e.g. because it is
1581 * single-cpu/core, or if you use libev in a project that doesn't use libev
1582 * from multiple threads, then you can define ECB_NO_THREADS when compiling
1583 * libev, in which cases the memory fences become nops.
1584 * alternatively, you can remove this #error and link against libpthread,
1585 * which will then provide the memory fences.
1586 */
1587# error "memory fences not defined for your architecture, please report"
1588#endif
1589
1590#ifndef ECB_MEMORY_FENCE
1591# define ECB_MEMORY_FENCE do { } while (0)
1592# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1593# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1594#endif
1595
490#define inline_size static inline 1596#define inline_size ecb_inline
491 1597
492#if EV_FEATURE_CODE 1598#if EV_FEATURE_CODE
493# define inline_speed static inline 1599# define inline_speed ecb_inline
494#else 1600#else
495# define inline_speed static noinline 1601# define inline_speed ecb_noinline static
496#endif 1602#endif
1603
1604/*****************************************************************************/
1605/* raw syscall wrappers */
1606
1607#if EV_NEED_SYSCALL
1608
1609#include <sys/syscall.h>
1610
1611/*
1612 * define some syscall wrappers for common architectures
1613 * this is mostly for nice looks during debugging, not performance.
1614 * our syscalls return < 0, not == -1, on error. which is good
1615 * enough for linux aio.
1616 * TODO: arm is also common nowadays, maybe even mips and x86
1617 * TODO: after implementing this, it suddenly looks like overkill, but its hard to remove...
1618 */
1619#if __GNUC__ && __linux && ECB_AMD64 && !defined __OPTIMIZE_SIZE__
1620 /* the costly errno access probably kills this for size optimisation */
1621
1622 #define ev_syscall(nr,narg,arg1,arg2,arg3,arg4,arg5,arg6) \
1623 ({ \
1624 long res; \
1625 register unsigned long r6 __asm__ ("r9" ); \
1626 register unsigned long r5 __asm__ ("r8" ); \
1627 register unsigned long r4 __asm__ ("r10"); \
1628 register unsigned long r3 __asm__ ("rdx"); \
1629 register unsigned long r2 __asm__ ("rsi"); \
1630 register unsigned long r1 __asm__ ("rdi"); \
1631 if (narg >= 6) r6 = (unsigned long)(arg6); \
1632 if (narg >= 5) r5 = (unsigned long)(arg5); \
1633 if (narg >= 4) r4 = (unsigned long)(arg4); \
1634 if (narg >= 3) r3 = (unsigned long)(arg3); \
1635 if (narg >= 2) r2 = (unsigned long)(arg2); \
1636 if (narg >= 1) r1 = (unsigned long)(arg1); \
1637 __asm__ __volatile__ ( \
1638 "syscall\n\t" \
1639 : "=a" (res) \
1640 : "0" (nr), "r" (r1), "r" (r2), "r" (r3), "r" (r4), "r" (r5) \
1641 : "cc", "r11", "cx", "memory"); \
1642 errno = -res; \
1643 res; \
1644 })
1645
1646#endif
1647
1648#ifdef ev_syscall
1649 #define ev_syscall0(nr) ev_syscall (nr, 0, 0, 0, 0, 0, 0, 0)
1650 #define ev_syscall1(nr,arg1) ev_syscall (nr, 1, arg1, 0, 0, 0, 0, 0)
1651 #define ev_syscall2(nr,arg1,arg2) ev_syscall (nr, 2, arg1, arg2, 0, 0, 0, 0)
1652 #define ev_syscall3(nr,arg1,arg2,arg3) ev_syscall (nr, 3, arg1, arg2, arg3, 0, 0, 0)
1653 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) ev_syscall (nr, 3, arg1, arg2, arg3, arg4, 0, 0)
1654 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) ev_syscall (nr, 5, arg1, arg2, arg3, arg4, arg5, 0)
1655 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) ev_syscall (nr, 6, arg1, arg2, arg3, arg4, arg5,arg6)
1656#else
1657 #define ev_syscall0(nr) syscall (nr)
1658 #define ev_syscall1(nr,arg1) syscall (nr, arg1)
1659 #define ev_syscall2(nr,arg1,arg2) syscall (nr, arg1, arg2)
1660 #define ev_syscall3(nr,arg1,arg2,arg3) syscall (nr, arg1, arg2, arg3)
1661 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) syscall (nr, arg1, arg2, arg3, arg4)
1662 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) syscall (nr, arg1, arg2, arg3, arg4, arg5)
1663 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) syscall (nr, arg1, arg2, arg3, arg4, arg5,arg6)
1664#endif
1665
1666#endif
1667
1668/*****************************************************************************/
497 1669
498#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1670#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
499 1671
500#if EV_MINPRI == EV_MAXPRI 1672#if EV_MINPRI == EV_MAXPRI
501# define ABSPRI(w) (((W)w), 0) 1673# define ABSPRI(w) (((W)w), 0)
502#else 1674#else
503# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1675# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
504#endif 1676#endif
505 1677
506#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1678#define EMPTY /* required for microsofts broken pseudo-c compiler */
507#define EMPTY2(a,b) /* used to suppress some warnings */
508 1679
509typedef ev_watcher *W; 1680typedef ev_watcher *W;
510typedef ev_watcher_list *WL; 1681typedef ev_watcher_list *WL;
511typedef ev_watcher_time *WT; 1682typedef ev_watcher_time *WT;
512 1683
… …
537# include "ev_win32.c" 1708# include "ev_win32.c"
538#endif 1709#endif
539 1710
540/*****************************************************************************/ 1711/*****************************************************************************/
541 1712
1713#if EV_USE_LINUXAIO
1714# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
1715#endif
1716
1717/* define a suitable floor function (only used by periodics atm) */
1718
1719#if EV_USE_FLOOR
1720# include <math.h>
1721# define ev_floor(v) floor (v)
1722#else
1723
1724#include <float.h>
1725
1726/* a floor() replacement function, should be independent of ev_tstamp type */
1727ecb_noinline
1728static ev_tstamp
1729ev_floor (ev_tstamp v)
1730{
1731 /* the choice of shift factor is not terribly important */
1732#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1733 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1734#else
1735 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1736#endif
1737
1738 /* special treatment for negative arguments */
1739 if (ecb_expect_false (v < 0.))
1740 {
1741 ev_tstamp f = -ev_floor (-v);
1742
1743 return f - (f == v ? 0 : 1);
1744 }
1745
1746 /* argument too large for an unsigned long? then reduce it */
1747 if (ecb_expect_false (v >= shift))
1748 {
1749 ev_tstamp f;
1750
1751 if (v == v - 1.)
1752 return v; /* very large numbers are assumed to be integer */
1753
1754 f = shift * ev_floor (v * (1. / shift));
1755 return f + ev_floor (v - f);
1756 }
1757
1758 /* fits into an unsigned long */
1759 return (unsigned long)v;
1760}
1761
1762#endif
1763
1764/*****************************************************************************/
1765
1766#ifdef __linux
1767# include <sys/utsname.h>
1768#endif
1769
1770ecb_noinline ecb_cold
1771static unsigned int
1772ev_linux_version (void)
1773{
1774#ifdef __linux
1775 unsigned int v = 0;
1776 struct utsname buf;
1777 int i;
1778 char *p = buf.release;
1779
1780 if (uname (&buf))
1781 return 0;
1782
1783 for (i = 3+1; --i; )
1784 {
1785 unsigned int c = 0;
1786
1787 for (;;)
1788 {
1789 if (*p >= '0' && *p <= '9')
1790 c = c * 10 + *p++ - '0';
1791 else
1792 {
1793 p += *p == '.';
1794 break;
1795 }
1796 }
1797
1798 v = (v << 8) | c;
1799 }
1800
1801 return v;
1802#else
1803 return 0;
1804#endif
1805}
1806
1807/*****************************************************************************/
1808
542#if EV_AVOID_STDIO 1809#if EV_AVOID_STDIO
543static void noinline 1810ecb_noinline ecb_cold
1811static void
544ev_printerr (const char *msg) 1812ev_printerr (const char *msg)
545{ 1813{
546 write (STDERR_FILENO, msg, strlen (msg)); 1814 write (STDERR_FILENO, msg, strlen (msg));
547} 1815}
548#endif 1816#endif
549 1817
550static void (*syserr_cb)(const char *msg); 1818static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
551 1819
1820ecb_cold
552void 1821void
553ev_set_syserr_cb (void (*cb)(const char *msg)) 1822ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
554{ 1823{
555 syserr_cb = cb; 1824 syserr_cb = cb;
556} 1825}
557 1826
558static void noinline 1827ecb_noinline ecb_cold
1828static void
559ev_syserr (const char *msg) 1829ev_syserr (const char *msg)
560{ 1830{
561 if (!msg) 1831 if (!msg)
562 msg = "(libev) system error"; 1832 msg = "(libev) system error";
563 1833
564 if (syserr_cb) 1834 if (syserr_cb)
565 syserr_cb (msg); 1835 syserr_cb (msg);
566 else 1836 else
567 { 1837 {
568#if EV_AVOID_STDIO 1838#if EV_AVOID_STDIO
569 const char *err = strerror (errno);
570
571 ev_printerr (msg); 1839 ev_printerr (msg);
572 ev_printerr (": "); 1840 ev_printerr (": ");
573 ev_printerr (err); 1841 ev_printerr (strerror (errno));
574 ev_printerr ("\n"); 1842 ev_printerr ("\n");
575#else 1843#else
576 perror (msg); 1844 perror (msg);
577#endif 1845#endif
578 abort (); 1846 abort ();
579 } 1847 }
580} 1848}
581 1849
582static void * 1850static void *
583ev_realloc_emul (void *ptr, long size) 1851ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
584{ 1852{
585#if __GLIBC__
586 return realloc (ptr, size);
587#else
588 /* some systems, notably openbsd and darwin, fail to properly 1853 /* some systems, notably openbsd and darwin, fail to properly
589 * implement realloc (x, 0) (as required by both ansi c-89 and 1854 * implement realloc (x, 0) (as required by both ansi c-89 and
590 * the single unix specification, so work around them here. 1855 * the single unix specification, so work around them here.
1856 * recently, also (at least) fedora and debian started breaking it,
1857 * despite documenting it otherwise.
591 */ 1858 */
592 1859
593 if (size) 1860 if (size)
594 return realloc (ptr, size); 1861 return realloc (ptr, size);
595 1862
596 free (ptr); 1863 free (ptr);
597 return 0; 1864 return 0;
598#endif
599} 1865}
600 1866
601static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1867static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
602 1868
1869ecb_cold
603void 1870void
604ev_set_allocator (void *(*cb)(void *ptr, long size)) 1871ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
605{ 1872{
606 alloc = cb; 1873 alloc = cb;
607} 1874}
608 1875
609inline_speed void * 1876inline_speed void *
… …
612 ptr = alloc (ptr, size); 1879 ptr = alloc (ptr, size);
613 1880
614 if (!ptr && size) 1881 if (!ptr && size)
615 { 1882 {
616#if EV_AVOID_STDIO 1883#if EV_AVOID_STDIO
617 ev_printerr ("libev: memory allocation failed, aborting.\n"); 1884 ev_printerr ("(libev) memory allocation failed, aborting.\n");
618#else 1885#else
619 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1886 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
620#endif 1887#endif
621 abort (); 1888 abort ();
622 } 1889 }
623 1890
624 return ptr; 1891 return ptr;
… …
636typedef struct 1903typedef struct
637{ 1904{
638 WL head; 1905 WL head;
639 unsigned char events; /* the events watched for */ 1906 unsigned char events; /* the events watched for */
640 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */ 1907 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 */ 1908 unsigned char emask; /* some backends store the actual kernel mask in here */
642 unsigned char unused; 1909 unsigned char eflags; /* flags field for use by backends */
643#if EV_USE_EPOLL 1910#if EV_USE_EPOLL
644 unsigned int egen; /* generation counter to counter epoll bugs */ 1911 unsigned int egen; /* generation counter to counter epoll bugs */
645#endif 1912#endif
646#if EV_SELECT_IS_WINSOCKET 1913#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
647 SOCKET handle; 1914 SOCKET handle;
1915#endif
1916#if EV_USE_IOCP
1917 OVERLAPPED or, ow;
648#endif 1918#endif
649} ANFD; 1919} ANFD;
650 1920
651/* stores the pending event set for a given watcher */ 1921/* stores the pending event set for a given watcher */
652typedef struct 1922typedef struct
… …
694 #undef VAR 1964 #undef VAR
695 }; 1965 };
696 #include "ev_wrap.h" 1966 #include "ev_wrap.h"
697 1967
698 static struct ev_loop default_loop_struct; 1968 static struct ev_loop default_loop_struct;
699 struct ev_loop *ev_default_loop_ptr; 1969 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
700 1970
701#else 1971#else
702 1972
703 ev_tstamp ev_rt_now; 1973 EV_API_DECL ev_tstamp ev_rt_now = EV_TS_CONST (0.); /* needs to be initialised to make it a definition despite extern */
704 #define VAR(name,decl) static decl; 1974 #define VAR(name,decl) static decl;
705 #include "ev_vars.h" 1975 #include "ev_vars.h"
706 #undef VAR 1976 #undef VAR
707 1977
708 static int ev_default_loop_ptr; 1978 static int ev_default_loop_ptr;
709 1979
710#endif 1980#endif
711 1981
712#if EV_FEATURE_API 1982#if EV_FEATURE_API
713# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 1983# 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) 1984# define EV_ACQUIRE_CB if (ecb_expect_false (acquire_cb)) acquire_cb (EV_A)
715# define EV_INVOKE_PENDING invoke_cb (EV_A) 1985# define EV_INVOKE_PENDING invoke_cb (EV_A)
716#else 1986#else
717# define EV_RELEASE_CB (void)0 1987# define EV_RELEASE_CB (void)0
718# define EV_ACQUIRE_CB (void)0 1988# define EV_ACQUIRE_CB (void)0
719# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1989# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
720#endif 1990#endif
721 1991
722#define EVUNLOOP_RECURSE 0x80 1992#define EVBREAK_RECURSE 0x80
723 1993
724/*****************************************************************************/ 1994/*****************************************************************************/
725 1995
726#ifndef EV_HAVE_EV_TIME 1996#ifndef EV_HAVE_EV_TIME
727ev_tstamp 1997ev_tstamp
728ev_time (void) 1998ev_time (void) EV_NOEXCEPT
729{ 1999{
730#if EV_USE_REALTIME 2000#if EV_USE_REALTIME
731 if (expect_true (have_realtime)) 2001 if (ecb_expect_true (have_realtime))
732 { 2002 {
733 struct timespec ts; 2003 struct timespec ts;
734 clock_gettime (CLOCK_REALTIME, &ts); 2004 clock_gettime (CLOCK_REALTIME, &ts);
735 return ts.tv_sec + ts.tv_nsec * 1e-9; 2005 return EV_TS_GET (ts);
736 } 2006 }
737#endif 2007#endif
738 2008
739 struct timeval tv; 2009 struct timeval tv;
740 gettimeofday (&tv, 0); 2010 gettimeofday (&tv, 0);
741 return tv.tv_sec + tv.tv_usec * 1e-6; 2011 return EV_TV_GET (tv);
742} 2012}
743#endif 2013#endif
744 2014
745inline_size ev_tstamp 2015inline_size ev_tstamp
746get_clock (void) 2016get_clock (void)
747{ 2017{
748#if EV_USE_MONOTONIC 2018#if EV_USE_MONOTONIC
749 if (expect_true (have_monotonic)) 2019 if (ecb_expect_true (have_monotonic))
750 { 2020 {
751 struct timespec ts; 2021 struct timespec ts;
752 clock_gettime (CLOCK_MONOTONIC, &ts); 2022 clock_gettime (CLOCK_MONOTONIC, &ts);
753 return ts.tv_sec + ts.tv_nsec * 1e-9; 2023 return EV_TS_GET (ts);
754 } 2024 }
755#endif 2025#endif
756 2026
757 return ev_time (); 2027 return ev_time ();
758} 2028}
759 2029
760#if EV_MULTIPLICITY 2030#if EV_MULTIPLICITY
761ev_tstamp 2031ev_tstamp
762ev_now (EV_P) 2032ev_now (EV_P) EV_NOEXCEPT
763{ 2033{
764 return ev_rt_now; 2034 return ev_rt_now;
765} 2035}
766#endif 2036#endif
767 2037
768void 2038void
769ev_sleep (ev_tstamp delay) 2039ev_sleep (ev_tstamp delay) EV_NOEXCEPT
770{ 2040{
771 if (delay > 0.) 2041 if (delay > EV_TS_CONST (0.))
772 { 2042 {
773#if EV_USE_NANOSLEEP 2043#if EV_USE_NANOSLEEP
774 struct timespec ts; 2044 struct timespec ts;
775 2045
776 EV_SET_TS (ts, delay); 2046 EV_TS_SET (ts, delay);
777 nanosleep (&ts, 0); 2047 nanosleep (&ts, 0);
778#elif defined(_WIN32) 2048#elif defined _WIN32
2049 /* maybe this should round up, as ms is very low resolution */
2050 /* compared to select (µs) or nanosleep (ns) */
779 Sleep ((unsigned long)(delay * 1e3)); 2051 Sleep ((unsigned long)(EV_TS_TO_MSEC (delay)));
780#else 2052#else
781 struct timeval tv; 2053 struct timeval tv;
782 2054
783 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 2055 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
784 /* something not guaranteed by newer posix versions, but guaranteed */ 2056 /* something not guaranteed by newer posix versions, but guaranteed */
785 /* by older ones */ 2057 /* by older ones */
786 EV_SET_TV (tv, delay); 2058 EV_TV_SET (tv, delay);
787 select (0, 0, 0, 0, &tv); 2059 select (0, 0, 0, 0, &tv);
788#endif 2060#endif
789 } 2061 }
790} 2062}
791 2063
… …
802 2074
803 do 2075 do
804 ncur <<= 1; 2076 ncur <<= 1;
805 while (cnt > ncur); 2077 while (cnt > ncur);
806 2078
807 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 2079 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
808 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 2080 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
809 { 2081 {
810 ncur *= elem; 2082 ncur *= elem;
811 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 2083 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
812 ncur = ncur - sizeof (void *) * 4; 2084 ncur = ncur - sizeof (void *) * 4;
… …
814 } 2086 }
815 2087
816 return ncur; 2088 return ncur;
817} 2089}
818 2090
819static noinline void * 2091ecb_noinline ecb_cold
2092static void *
820array_realloc (int elem, void *base, int *cur, int cnt) 2093array_realloc (int elem, void *base, int *cur, int cnt)
821{ 2094{
822 *cur = array_nextsize (elem, *cur, cnt); 2095 *cur = array_nextsize (elem, *cur, cnt);
823 return ev_realloc (base, elem * *cur); 2096 return ev_realloc (base, elem * *cur);
824} 2097}
825 2098
2099#define array_needsize_noinit(base,offset,count)
2100
826#define array_init_zero(base,count) \ 2101#define array_needsize_zerofill(base,offset,count) \
827 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 2102 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
828 2103
829#define array_needsize(type,base,cur,cnt,init) \ 2104#define array_needsize(type,base,cur,cnt,init) \
830 if (expect_false ((cnt) > (cur))) \ 2105 if (ecb_expect_false ((cnt) > (cur))) \
831 { \ 2106 { \
832 int ocur_ = (cur); \ 2107 ecb_unused int ocur_ = (cur); \
833 (base) = (type *)array_realloc \ 2108 (base) = (type *)array_realloc \
834 (sizeof (type), (base), &(cur), (cnt)); \ 2109 (sizeof (type), (base), &(cur), (cnt)); \
835 init ((base) + (ocur_), (cur) - ocur_); \ 2110 init ((base), ocur_, ((cur) - ocur_)); \
836 } 2111 }
837 2112
838#if 0 2113#if 0
839#define array_slim(type,stem) \ 2114#define array_slim(type,stem) \
840 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2115 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 2124 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
850 2125
851/*****************************************************************************/ 2126/*****************************************************************************/
852 2127
853/* dummy callback for pending events */ 2128/* dummy callback for pending events */
854static void noinline 2129ecb_noinline
2130static void
855pendingcb (EV_P_ ev_prepare *w, int revents) 2131pendingcb (EV_P_ ev_prepare *w, int revents)
856{ 2132{
857} 2133}
858 2134
859void noinline 2135ecb_noinline
2136void
860ev_feed_event (EV_P_ void *w, int revents) 2137ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
861{ 2138{
862 W w_ = (W)w; 2139 W w_ = (W)w;
863 int pri = ABSPRI (w_); 2140 int pri = ABSPRI (w_);
864 2141
865 if (expect_false (w_->pending)) 2142 if (ecb_expect_false (w_->pending))
866 pendings [pri][w_->pending - 1].events |= revents; 2143 pendings [pri][w_->pending - 1].events |= revents;
867 else 2144 else
868 { 2145 {
869 w_->pending = ++pendingcnt [pri]; 2146 w_->pending = ++pendingcnt [pri];
870 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2147 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
871 pendings [pri][w_->pending - 1].w = w_; 2148 pendings [pri][w_->pending - 1].w = w_;
872 pendings [pri][w_->pending - 1].events = revents; 2149 pendings [pri][w_->pending - 1].events = revents;
873 } 2150 }
2151
2152 pendingpri = NUMPRI - 1;
874} 2153}
875 2154
876inline_speed void 2155inline_speed void
877feed_reverse (EV_P_ W w) 2156feed_reverse (EV_P_ W w)
878{ 2157{
879 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2158 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
880 rfeeds [rfeedcnt++] = w; 2159 rfeeds [rfeedcnt++] = w;
881} 2160}
882 2161
883inline_size void 2162inline_size void
884feed_reverse_done (EV_P_ int revents) 2163feed_reverse_done (EV_P_ int revents)
… …
919inline_speed void 2198inline_speed void
920fd_event (EV_P_ int fd, int revents) 2199fd_event (EV_P_ int fd, int revents)
921{ 2200{
922 ANFD *anfd = anfds + fd; 2201 ANFD *anfd = anfds + fd;
923 2202
924 if (expect_true (!anfd->reify)) 2203 if (ecb_expect_true (!anfd->reify))
925 fd_event_nocheck (EV_A_ fd, revents); 2204 fd_event_nocheck (EV_A_ fd, revents);
926} 2205}
927 2206
928void 2207void
929ev_feed_fd_event (EV_P_ int fd, int revents) 2208ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
930{ 2209{
931 if (fd >= 0 && fd < anfdmax) 2210 if (fd >= 0 && fd < anfdmax)
932 fd_event_nocheck (EV_A_ fd, revents); 2211 fd_event_nocheck (EV_A_ fd, revents);
933} 2212}
934 2213
… …
937inline_size void 2216inline_size void
938fd_reify (EV_P) 2217fd_reify (EV_P)
939{ 2218{
940 int i; 2219 int i;
941 2220
2221#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
2222 for (i = 0; i < fdchangecnt; ++i)
2223 {
2224 int fd = fdchanges [i];
2225 ANFD *anfd = anfds + fd;
2226
2227 if (anfd->reify & EV__IOFDSET && anfd->head)
2228 {
2229 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
2230
2231 if (handle != anfd->handle)
2232 {
2233 unsigned long arg;
2234
2235 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
2236
2237 /* handle changed, but fd didn't - we need to do it in two steps */
2238 backend_modify (EV_A_ fd, anfd->events, 0);
2239 anfd->events = 0;
2240 anfd->handle = handle;
2241 }
2242 }
2243 }
2244#endif
2245
942 for (i = 0; i < fdchangecnt; ++i) 2246 for (i = 0; i < fdchangecnt; ++i)
943 { 2247 {
944 int fd = fdchanges [i]; 2248 int fd = fdchanges [i];
945 ANFD *anfd = anfds + fd; 2249 ANFD *anfd = anfds + fd;
946 ev_io *w; 2250 ev_io *w;
947 2251
948 unsigned char events = 0; 2252 unsigned char o_events = anfd->events;
2253 unsigned char o_reify = anfd->reify;
949 2254
950 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2255 anfd->reify = 0;
951 events |= (unsigned char)w->events;
952 2256
953#if EV_SELECT_IS_WINSOCKET 2257 /*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
954 if (events)
955 { 2258 {
956 unsigned long arg; 2259 anfd->events = 0;
957 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 2260
958 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 2261 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
2262 anfd->events |= (unsigned char)w->events;
2263
2264 if (o_events != anfd->events)
2265 o_reify = EV__IOFDSET; /* actually |= */
959 } 2266 }
960#endif
961 2267
962 { 2268 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); 2269 backend_modify (EV_A_ fd, o_events, anfd->events);
971 }
972 } 2270 }
973 2271
974 fdchangecnt = 0; 2272 fdchangecnt = 0;
975} 2273}
976 2274
977/* something about the given fd changed */ 2275/* something about the given fd changed */
978inline_size void 2276inline_size
2277void
979fd_change (EV_P_ int fd, int flags) 2278fd_change (EV_P_ int fd, int flags)
980{ 2279{
981 unsigned char reify = anfds [fd].reify; 2280 unsigned char reify = anfds [fd].reify;
982 anfds [fd].reify |= flags; 2281 anfds [fd].reify |= flags;
983 2282
984 if (expect_true (!reify)) 2283 if (ecb_expect_true (!reify))
985 { 2284 {
986 ++fdchangecnt; 2285 ++fdchangecnt;
987 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2286 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
988 fdchanges [fdchangecnt - 1] = fd; 2287 fdchanges [fdchangecnt - 1] = fd;
989 } 2288 }
990} 2289}
991 2290
992/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2291/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
993inline_speed void 2292inline_speed ecb_cold void
994fd_kill (EV_P_ int fd) 2293fd_kill (EV_P_ int fd)
995{ 2294{
996 ev_io *w; 2295 ev_io *w;
997 2296
998 while ((w = (ev_io *)anfds [fd].head)) 2297 while ((w = (ev_io *)anfds [fd].head))
… …
1001 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2300 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1002 } 2301 }
1003} 2302}
1004 2303
1005/* check whether the given fd is actually valid, for error recovery */ 2304/* check whether the given fd is actually valid, for error recovery */
1006inline_size int 2305inline_size ecb_cold int
1007fd_valid (int fd) 2306fd_valid (int fd)
1008{ 2307{
1009#ifdef _WIN32 2308#ifdef _WIN32
1010 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2309 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1011#else 2310#else
1012 return fcntl (fd, F_GETFD) != -1; 2311 return fcntl (fd, F_GETFD) != -1;
1013#endif 2312#endif
1014} 2313}
1015 2314
1016/* called on EBADF to verify fds */ 2315/* called on EBADF to verify fds */
1017static void noinline 2316ecb_noinline ecb_cold
2317static void
1018fd_ebadf (EV_P) 2318fd_ebadf (EV_P)
1019{ 2319{
1020 int fd; 2320 int fd;
1021 2321
1022 for (fd = 0; fd < anfdmax; ++fd) 2322 for (fd = 0; fd < anfdmax; ++fd)
… …
1024 if (!fd_valid (fd) && errno == EBADF) 2324 if (!fd_valid (fd) && errno == EBADF)
1025 fd_kill (EV_A_ fd); 2325 fd_kill (EV_A_ fd);
1026} 2326}
1027 2327
1028/* called on ENOMEM in select/poll to kill some fds and retry */ 2328/* called on ENOMEM in select/poll to kill some fds and retry */
1029static void noinline 2329ecb_noinline ecb_cold
2330static void
1030fd_enomem (EV_P) 2331fd_enomem (EV_P)
1031{ 2332{
1032 int fd; 2333 int fd;
1033 2334
1034 for (fd = anfdmax; fd--; ) 2335 for (fd = anfdmax; fd--; )
… …
1038 break; 2339 break;
1039 } 2340 }
1040} 2341}
1041 2342
1042/* usually called after fork if backend needs to re-arm all fds from scratch */ 2343/* usually called after fork if backend needs to re-arm all fds from scratch */
1043static void noinline 2344ecb_noinline
2345static void
1044fd_rearm_all (EV_P) 2346fd_rearm_all (EV_P)
1045{ 2347{
1046 int fd; 2348 int fd;
1047 2349
1048 for (fd = 0; fd < anfdmax; ++fd) 2350 for (fd = 0; fd < anfdmax; ++fd)
… …
1101 ev_tstamp minat; 2403 ev_tstamp minat;
1102 ANHE *minpos; 2404 ANHE *minpos;
1103 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; 2405 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
1104 2406
1105 /* find minimum child */ 2407 /* find minimum child */
1106 if (expect_true (pos + DHEAP - 1 < E)) 2408 if (ecb_expect_true (pos + DHEAP - 1 < E))
1107 { 2409 {
1108 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2410 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1109 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2411 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)); 2412 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)); 2413 if ( minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1112 } 2414 }
1113 else if (pos < E) 2415 else if (pos < E)
1114 { 2416 {
1115 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2417 /* 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)); 2418 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)); 2419 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)); 2420 if (pos + 3 < E && minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1119 } 2421 }
1120 else 2422 else
1121 break; 2423 break;
1122 2424
1123 if (ANHE_at (he) <= minat) 2425 if (ANHE_at (he) <= minat)
… …
1131 2433
1132 heap [k] = he; 2434 heap [k] = he;
1133 ev_active (ANHE_w (he)) = k; 2435 ev_active (ANHE_w (he)) = k;
1134} 2436}
1135 2437
1136#else /* 4HEAP */ 2438#else /* not 4HEAP */
1137 2439
1138#define HEAP0 1 2440#define HEAP0 1
1139#define HPARENT(k) ((k) >> 1) 2441#define HPARENT(k) ((k) >> 1)
1140#define UPHEAP_DONE(p,k) (!(p)) 2442#define UPHEAP_DONE(p,k) (!(p))
1141 2443
… …
1229 2531
1230/*****************************************************************************/ 2532/*****************************************************************************/
1231 2533
1232#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2534#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1233 2535
1234static void noinline 2536ecb_noinline ecb_cold
2537static void
1235evpipe_init (EV_P) 2538evpipe_init (EV_P)
1236{ 2539{
1237 if (!ev_is_active (&pipe_w)) 2540 if (!ev_is_active (&pipe_w))
1238 { 2541 {
2542 int fds [2];
2543
1239# if EV_USE_EVENTFD 2544# if EV_USE_EVENTFD
2545 fds [0] = -1;
1240 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2546 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1241 if (evfd < 0 && errno == EINVAL) 2547 if (fds [1] < 0 && errno == EINVAL)
1242 evfd = eventfd (0, 0); 2548 fds [1] = eventfd (0, 0);
1243 2549
1244 if (evfd >= 0) 2550 if (fds [1] < 0)
2551# endif
1245 { 2552 {
2553 while (pipe (fds))
2554 ev_syserr ("(libev) error creating signal/async pipe");
2555
2556 fd_intern (fds [0]);
2557 }
2558
1246 evpipe [0] = -1; 2559 evpipe [0] = fds [0];
1247 fd_intern (evfd); /* doing it twice doesn't hurt */ 2560
1248 ev_io_set (&pipe_w, evfd, EV_READ); 2561 if (evpipe [1] < 0)
2562 evpipe [1] = fds [1]; /* first call, set write fd */
2563 else
2564 {
2565 /* on subsequent calls, do not change evpipe [1] */
2566 /* so that evpipe_write can always rely on its value. */
2567 /* this branch does not do anything sensible on windows, */
2568 /* so must not be executed on windows */
2569
2570 dup2 (fds [1], evpipe [1]);
2571 close (fds [1]);
2572 }
2573
2574 fd_intern (evpipe [1]);
2575
2576 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2577 ev_io_start (EV_A_ &pipe_w);
2578 ev_unref (EV_A); /* watcher should not keep loop alive */
2579 }
2580}
2581
2582inline_speed void
2583evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2584{
2585 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2586
2587 if (ecb_expect_true (*flag))
2588 return;
2589
2590 *flag = 1;
2591 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2592
2593 pipe_write_skipped = 1;
2594
2595 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2596
2597 if (pipe_write_wanted)
2598 {
2599 int old_errno;
2600
2601 pipe_write_skipped = 0;
2602 ECB_MEMORY_FENCE_RELEASE;
2603
2604 old_errno = errno; /* save errno because write will clobber it */
2605
2606#if EV_USE_EVENTFD
2607 if (evpipe [0] < 0)
2608 {
2609 uint64_t counter = 1;
2610 write (evpipe [1], &counter, sizeof (uint64_t));
1249 } 2611 }
1250 else 2612 else
1251# endif 2613#endif
1252 { 2614 {
1253 while (pipe (evpipe)) 2615#ifdef _WIN32
1254 ev_syserr ("(libev) error creating signal/async pipe"); 2616 WSABUF buf;
1255 2617 DWORD sent;
1256 fd_intern (evpipe [0]); 2618 buf.buf = (char *)&buf;
1257 fd_intern (evpipe [1]); 2619 buf.len = 1;
1258 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2620 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2621#else
2622 write (evpipe [1], &(evpipe [1]), 1);
2623#endif
1259 } 2624 }
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 2625
1291 errno = old_errno; 2626 errno = old_errno;
1292 } 2627 }
1293} 2628}
1294 2629
… …
1297static void 2632static void
1298pipecb (EV_P_ ev_io *iow, int revents) 2633pipecb (EV_P_ ev_io *iow, int revents)
1299{ 2634{
1300 int i; 2635 int i;
1301 2636
2637 if (revents & EV_READ)
2638 {
1302#if EV_USE_EVENTFD 2639#if EV_USE_EVENTFD
1303 if (evfd >= 0) 2640 if (evpipe [0] < 0)
1304 { 2641 {
1305 uint64_t counter; 2642 uint64_t counter;
1306 read (evfd, &counter, sizeof (uint64_t)); 2643 read (evpipe [1], &counter, sizeof (uint64_t));
1307 } 2644 }
1308 else 2645 else
1309#endif 2646#endif
1310 { 2647 {
1311 char dummy; 2648 char dummy[4];
1312 /* see discussion in evpipe_write when you think this read should be recv in win32 */ 2649#ifdef _WIN32
2650 WSABUF buf;
2651 DWORD recvd;
2652 DWORD flags = 0;
2653 buf.buf = dummy;
2654 buf.len = sizeof (dummy);
2655 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2656#else
1313 read (evpipe [0], &dummy, 1); 2657 read (evpipe [0], &dummy, sizeof (dummy));
2658#endif
2659 }
1314 } 2660 }
1315 2661
2662 pipe_write_skipped = 0;
2663
2664 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2665
2666#if EV_SIGNAL_ENABLE
1316 if (sig_pending) 2667 if (sig_pending)
1317 { 2668 {
1318 sig_pending = 0; 2669 sig_pending = 0;
1319 2670
2671 ECB_MEMORY_FENCE;
2672
1320 for (i = EV_NSIG - 1; i--; ) 2673 for (i = EV_NSIG - 1; i--; )
1321 if (expect_false (signals [i].pending)) 2674 if (ecb_expect_false (signals [i].pending))
1322 ev_feed_signal_event (EV_A_ i + 1); 2675 ev_feed_signal_event (EV_A_ i + 1);
1323 } 2676 }
2677#endif
1324 2678
1325#if EV_ASYNC_ENABLE 2679#if EV_ASYNC_ENABLE
1326 if (async_pending) 2680 if (async_pending)
1327 { 2681 {
1328 async_pending = 0; 2682 async_pending = 0;
2683
2684 ECB_MEMORY_FENCE;
1329 2685
1330 for (i = asynccnt; i--; ) 2686 for (i = asynccnt; i--; )
1331 if (asyncs [i]->sent) 2687 if (asyncs [i]->sent)
1332 { 2688 {
1333 asyncs [i]->sent = 0; 2689 asyncs [i]->sent = 0;
2690 ECB_MEMORY_FENCE_RELEASE;
1334 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2691 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1335 } 2692 }
1336 } 2693 }
1337#endif 2694#endif
1338} 2695}
1339 2696
1340/*****************************************************************************/ 2697/*****************************************************************************/
1341 2698
2699void
2700ev_feed_signal (int signum) EV_NOEXCEPT
2701{
2702#if EV_MULTIPLICITY
2703 EV_P;
2704 ECB_MEMORY_FENCE_ACQUIRE;
2705 EV_A = signals [signum - 1].loop;
2706
2707 if (!EV_A)
2708 return;
2709#endif
2710
2711 signals [signum - 1].pending = 1;
2712 evpipe_write (EV_A_ &sig_pending);
2713}
2714
1342static void 2715static void
1343ev_sighandler (int signum) 2716ev_sighandler (int signum)
1344{ 2717{
1345#if EV_MULTIPLICITY
1346 EV_P = signals [signum - 1].loop;
1347#endif
1348
1349#ifdef _WIN32 2718#ifdef _WIN32
1350 signal (signum, ev_sighandler); 2719 signal (signum, ev_sighandler);
1351#endif 2720#endif
1352 2721
1353 signals [signum - 1].pending = 1; 2722 ev_feed_signal (signum);
1354 evpipe_write (EV_A_ &sig_pending);
1355} 2723}
1356 2724
1357void noinline 2725ecb_noinline
2726void
1358ev_feed_signal_event (EV_P_ int signum) 2727ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
1359{ 2728{
1360 WL w; 2729 WL w;
1361 2730
1362 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2731 if (ecb_expect_false (signum <= 0 || signum >= EV_NSIG))
1363 return; 2732 return;
1364 2733
1365 --signum; 2734 --signum;
1366 2735
1367#if EV_MULTIPLICITY 2736#if EV_MULTIPLICITY
1368 /* it is permissible to try to feed a signal to the wrong loop */ 2737 /* 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 */ 2738 /* or, likely more useful, feeding a signal nobody is waiting for */
1370 2739
1371 if (expect_false (signals [signum].loop != EV_A)) 2740 if (ecb_expect_false (signals [signum].loop != EV_A))
1372 return; 2741 return;
1373#endif 2742#endif
1374 2743
1375 signals [signum].pending = 0; 2744 signals [signum].pending = 0;
2745 ECB_MEMORY_FENCE_RELEASE;
1376 2746
1377 for (w = signals [signum].head; w; w = w->next) 2747 for (w = signals [signum].head; w; w = w->next)
1378 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2748 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1379} 2749}
1380 2750
… …
1459 2829
1460#endif 2830#endif
1461 2831
1462/*****************************************************************************/ 2832/*****************************************************************************/
1463 2833
2834#if EV_USE_IOCP
2835# include "ev_iocp.c"
2836#endif
1464#if EV_USE_PORT 2837#if EV_USE_PORT
1465# include "ev_port.c" 2838# include "ev_port.c"
1466#endif 2839#endif
1467#if EV_USE_KQUEUE 2840#if EV_USE_KQUEUE
1468# include "ev_kqueue.c" 2841# include "ev_kqueue.c"
1469#endif 2842#endif
1470#if EV_USE_EPOLL 2843#if EV_USE_EPOLL
1471# include "ev_epoll.c" 2844# include "ev_epoll.c"
1472#endif 2845#endif
2846#if EV_USE_LINUXAIO
2847# include "ev_linuxaio.c"
2848#endif
2849#if EV_USE_IOURING
2850# include "ev_iouring.c"
2851#endif
1473#if EV_USE_POLL 2852#if EV_USE_POLL
1474# include "ev_poll.c" 2853# include "ev_poll.c"
1475#endif 2854#endif
1476#if EV_USE_SELECT 2855#if EV_USE_SELECT
1477# include "ev_select.c" 2856# include "ev_select.c"
1478#endif 2857#endif
1479 2858
1480int 2859ecb_cold int
1481ev_version_major (void) 2860ev_version_major (void) EV_NOEXCEPT
1482{ 2861{
1483 return EV_VERSION_MAJOR; 2862 return EV_VERSION_MAJOR;
1484} 2863}
1485 2864
1486int 2865ecb_cold int
1487ev_version_minor (void) 2866ev_version_minor (void) EV_NOEXCEPT
1488{ 2867{
1489 return EV_VERSION_MINOR; 2868 return EV_VERSION_MINOR;
1490} 2869}
1491 2870
1492/* return true if we are running with elevated privileges and should ignore env variables */ 2871/* return true if we are running with elevated privileges and should ignore env variables */
1493int inline_size 2872inline_size ecb_cold int
1494enable_secure (void) 2873enable_secure (void)
1495{ 2874{
1496#ifdef _WIN32 2875#ifdef _WIN32
1497 return 0; 2876 return 0;
1498#else 2877#else
1499 return getuid () != geteuid () 2878 return getuid () != geteuid ()
1500 || getgid () != getegid (); 2879 || getgid () != getegid ();
1501#endif 2880#endif
1502} 2881}
1503 2882
2883ecb_cold
1504unsigned int 2884unsigned int
1505ev_supported_backends (void) 2885ev_supported_backends (void) EV_NOEXCEPT
1506{ 2886{
1507 unsigned int flags = 0; 2887 unsigned int flags = 0;
1508 2888
1509 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2889 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1510 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2890 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
1511 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 2891 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2892 if (EV_USE_LINUXAIO) flags |= EVBACKEND_LINUXAIO;
2893 if (EV_USE_IOURING ) flags |= EVBACKEND_IOURING;
1512 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 2894 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
1513 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2895 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
1514 2896
1515 return flags; 2897 return flags;
1516} 2898}
1517 2899
2900ecb_cold
1518unsigned int 2901unsigned int
1519ev_recommended_backends (void) 2902ev_recommended_backends (void) EV_NOEXCEPT
1520{ 2903{
1521 unsigned int flags = ev_supported_backends (); 2904 unsigned int flags = ev_supported_backends ();
1522 2905
1523#ifndef __NetBSD__ 2906#ifndef __NetBSD__
1524 /* kqueue is borked on everything but netbsd apparently */ 2907 /* kqueue is borked on everything but netbsd apparently */
… …
1532#endif 2915#endif
1533#ifdef __FreeBSD__ 2916#ifdef __FreeBSD__
1534 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */ 2917 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1535#endif 2918#endif
1536 2919
2920 /* TODO: linuxaio is very experimental */
2921#if !EV_RECOMMEND_LINUXAIO
2922 flags &= ~EVBACKEND_LINUXAIO;
2923#endif
2924 /* TODO: linuxaio is super experimental */
2925#if !EV_RECOMMEND_IOURING
2926 flags &= ~EVBACKEND_IOURING;
2927#endif
2928
1537 return flags; 2929 return flags;
1538} 2930}
1539 2931
2932ecb_cold
1540unsigned int 2933unsigned int
1541ev_embeddable_backends (void) 2934ev_embeddable_backends (void) EV_NOEXCEPT
1542{ 2935{
1543 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2936 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1544 2937
1545 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2938 /* 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 */ 2939 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1547 flags &= ~EVBACKEND_EPOLL; 2940 flags &= ~EVBACKEND_EPOLL;
2941
2942 /* EVBACKEND_LINUXAIO is theoretically embeddable, but suffers from a performance overhead */
2943
2944 /* EVBACKEND_IOURING is practically embeddable, but the current implementation is not
2945 * because our backend_fd is the epoll fd we need as fallback.
2946 * if the kernel ever is fixed, this might change...
2947 */
1548 2948
1549 return flags; 2949 return flags;
1550} 2950}
1551 2951
1552unsigned int 2952unsigned int
1553ev_backend (EV_P) 2953ev_backend (EV_P) EV_NOEXCEPT
1554{ 2954{
1555 return backend; 2955 return backend;
1556} 2956}
1557 2957
1558#if EV_FEATURE_API 2958#if EV_FEATURE_API
1559unsigned int 2959unsigned int
1560ev_iteration (EV_P) 2960ev_iteration (EV_P) EV_NOEXCEPT
1561{ 2961{
1562 return loop_count; 2962 return loop_count;
1563} 2963}
1564 2964
1565unsigned int 2965unsigned int
1566ev_depth (EV_P) 2966ev_depth (EV_P) EV_NOEXCEPT
1567{ 2967{
1568 return loop_depth; 2968 return loop_depth;
1569} 2969}
1570 2970
1571void 2971void
1572ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2972ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1573{ 2973{
1574 io_blocktime = interval; 2974 io_blocktime = interval;
1575} 2975}
1576 2976
1577void 2977void
1578ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2978ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1579{ 2979{
1580 timeout_blocktime = interval; 2980 timeout_blocktime = interval;
1581} 2981}
1582 2982
1583void 2983void
1584ev_set_userdata (EV_P_ void *data) 2984ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
1585{ 2985{
1586 userdata = data; 2986 userdata = data;
1587} 2987}
1588 2988
1589void * 2989void *
1590ev_userdata (EV_P) 2990ev_userdata (EV_P) EV_NOEXCEPT
1591{ 2991{
1592 return userdata; 2992 return userdata;
1593} 2993}
1594 2994
2995void
1595void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2996ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
1596{ 2997{
1597 invoke_cb = invoke_pending_cb; 2998 invoke_cb = invoke_pending_cb;
1598} 2999}
1599 3000
3001void
1600void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 3002ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
1601{ 3003{
1602 release_cb = release; 3004 release_cb = release;
1603 acquire_cb = acquire; 3005 acquire_cb = acquire;
1604} 3006}
1605#endif 3007#endif
1606 3008
1607/* initialise a loop structure, must be zero-initialised */ 3009/* initialise a loop structure, must be zero-initialised */
1608static void noinline 3010ecb_noinline ecb_cold
3011static void
1609loop_init (EV_P_ unsigned int flags) 3012loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
1610{ 3013{
1611 if (!backend) 3014 if (!backend)
1612 { 3015 {
3016 origflags = flags;
3017
1613#if EV_USE_REALTIME 3018#if EV_USE_REALTIME
1614 if (!have_realtime) 3019 if (!have_realtime)
1615 { 3020 {
1616 struct timespec ts; 3021 struct timespec ts;
1617 3022
… …
1639 if (!(flags & EVFLAG_NOENV) 3044 if (!(flags & EVFLAG_NOENV)
1640 && !enable_secure () 3045 && !enable_secure ()
1641 && getenv ("LIBEV_FLAGS")) 3046 && getenv ("LIBEV_FLAGS"))
1642 flags = atoi (getenv ("LIBEV_FLAGS")); 3047 flags = atoi (getenv ("LIBEV_FLAGS"));
1643 3048
1644 ev_rt_now = ev_time (); 3049 ev_rt_now = ev_time ();
1645 mn_now = get_clock (); 3050 mn_now = get_clock ();
1646 now_floor = mn_now; 3051 now_floor = mn_now;
1647 rtmn_diff = ev_rt_now - mn_now; 3052 rtmn_diff = ev_rt_now - mn_now;
1648#if EV_FEATURE_API 3053#if EV_FEATURE_API
1649 invoke_cb = ev_invoke_pending; 3054 invoke_cb = ev_invoke_pending;
1650#endif 3055#endif
1651 3056
1652 io_blocktime = 0.; 3057 io_blocktime = 0.;
1653 timeout_blocktime = 0.; 3058 timeout_blocktime = 0.;
1654 backend = 0; 3059 backend = 0;
1655 backend_fd = -1; 3060 backend_fd = -1;
1656 sig_pending = 0; 3061 sig_pending = 0;
1657#if EV_ASYNC_ENABLE 3062#if EV_ASYNC_ENABLE
1658 async_pending = 0; 3063 async_pending = 0;
1659#endif 3064#endif
3065 pipe_write_skipped = 0;
3066 pipe_write_wanted = 0;
3067 evpipe [0] = -1;
3068 evpipe [1] = -1;
1660#if EV_USE_INOTIFY 3069#if EV_USE_INOTIFY
1661 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 3070 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1662#endif 3071#endif
1663#if EV_USE_SIGNALFD 3072#if EV_USE_SIGNALFD
1664 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 3073 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1665#endif 3074#endif
1666 3075
1667 if (!(flags & 0x0000ffffU)) 3076 if (!(flags & EVBACKEND_MASK))
1668 flags |= ev_recommended_backends (); 3077 flags |= ev_recommended_backends ();
1669 3078
3079#if EV_USE_IOCP
3080 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
3081#endif
1670#if EV_USE_PORT 3082#if EV_USE_PORT
1671 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 3083 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1672#endif 3084#endif
1673#if EV_USE_KQUEUE 3085#if EV_USE_KQUEUE
1674 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 3086 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
3087#endif
3088#if EV_USE_IOURING
3089 if (!backend && (flags & EVBACKEND_IOURING )) backend = iouring_init (EV_A_ flags);
3090#endif
3091#if EV_USE_LINUXAIO
3092 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
1675#endif 3093#endif
1676#if EV_USE_EPOLL 3094#if EV_USE_EPOLL
1677 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 3095 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
1678#endif 3096#endif
1679#if EV_USE_POLL 3097#if EV_USE_POLL
1680 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 3098 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
1681#endif 3099#endif
1682#if EV_USE_SELECT 3100#if EV_USE_SELECT
1683 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 3101 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
1684#endif 3102#endif
1685 3103
1686 ev_prepare_init (&pending_w, pendingcb); 3104 ev_prepare_init (&pending_w, pendingcb);
1687 3105
1688#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 3106#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
… …
1691#endif 3109#endif
1692 } 3110 }
1693} 3111}
1694 3112
1695/* free up a loop structure */ 3113/* free up a loop structure */
1696static void noinline 3114ecb_cold
3115void
1697loop_destroy (EV_P) 3116ev_loop_destroy (EV_P)
1698{ 3117{
1699 int i; 3118 int i;
3119
3120#if EV_MULTIPLICITY
3121 /* mimic free (0) */
3122 if (!EV_A)
3123 return;
3124#endif
3125
3126#if EV_CLEANUP_ENABLE
3127 /* queue cleanup watchers (and execute them) */
3128 if (ecb_expect_false (cleanupcnt))
3129 {
3130 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
3131 EV_INVOKE_PENDING;
3132 }
3133#endif
3134
3135#if EV_CHILD_ENABLE
3136 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
3137 {
3138 ev_ref (EV_A); /* child watcher */
3139 ev_signal_stop (EV_A_ &childev);
3140 }
3141#endif
1700 3142
1701 if (ev_is_active (&pipe_w)) 3143 if (ev_is_active (&pipe_w))
1702 { 3144 {
1703 /*ev_ref (EV_A);*/ 3145 /*ev_ref (EV_A);*/
1704 /*ev_io_stop (EV_A_ &pipe_w);*/ 3146 /*ev_io_stop (EV_A_ &pipe_w);*/
1705 3147
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]); 3148 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1714 EV_WIN32_CLOSE_FD (evpipe [1]); 3149 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1715 }
1716 } 3150 }
1717 3151
1718#if EV_USE_SIGNALFD 3152#if EV_USE_SIGNALFD
1719 if (ev_is_active (&sigfd_w)) 3153 if (ev_is_active (&sigfd_w))
1720 close (sigfd); 3154 close (sigfd);
… …
1726#endif 3160#endif
1727 3161
1728 if (backend_fd >= 0) 3162 if (backend_fd >= 0)
1729 close (backend_fd); 3163 close (backend_fd);
1730 3164
3165#if EV_USE_IOCP
3166 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
3167#endif
1731#if EV_USE_PORT 3168#if EV_USE_PORT
1732 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3169 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1733#endif 3170#endif
1734#if EV_USE_KQUEUE 3171#if EV_USE_KQUEUE
1735 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3172 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
3173#endif
3174#if EV_USE_IOURING
3175 if (backend == EVBACKEND_IOURING ) iouring_destroy (EV_A);
3176#endif
3177#if EV_USE_LINUXAIO
3178 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
1736#endif 3179#endif
1737#if EV_USE_EPOLL 3180#if EV_USE_EPOLL
1738 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3181 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
1739#endif 3182#endif
1740#if EV_USE_POLL 3183#if EV_USE_POLL
1741 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3184 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
1742#endif 3185#endif
1743#if EV_USE_SELECT 3186#if EV_USE_SELECT
1744 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3187 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
1745#endif 3188#endif
1746 3189
1747 for (i = NUMPRI; i--; ) 3190 for (i = NUMPRI; i--; )
1748 { 3191 {
1749 array_free (pending, [i]); 3192 array_free (pending, [i]);
… …
1762 array_free (periodic, EMPTY); 3205 array_free (periodic, EMPTY);
1763#endif 3206#endif
1764#if EV_FORK_ENABLE 3207#if EV_FORK_ENABLE
1765 array_free (fork, EMPTY); 3208 array_free (fork, EMPTY);
1766#endif 3209#endif
3210#if EV_CLEANUP_ENABLE
3211 array_free (cleanup, EMPTY);
3212#endif
1767 array_free (prepare, EMPTY); 3213 array_free (prepare, EMPTY);
1768 array_free (check, EMPTY); 3214 array_free (check, EMPTY);
1769#if EV_ASYNC_ENABLE 3215#if EV_ASYNC_ENABLE
1770 array_free (async, EMPTY); 3216 array_free (async, EMPTY);
1771#endif 3217#endif
1772 3218
1773 backend = 0; 3219 backend = 0;
3220
3221#if EV_MULTIPLICITY
3222 if (ev_is_default_loop (EV_A))
3223#endif
3224 ev_default_loop_ptr = 0;
3225#if EV_MULTIPLICITY
3226 else
3227 ev_free (EV_A);
3228#endif
1774} 3229}
1775 3230
1776#if EV_USE_INOTIFY 3231#if EV_USE_INOTIFY
1777inline_size void infy_fork (EV_P); 3232inline_size void infy_fork (EV_P);
1778#endif 3233#endif
1779 3234
1780inline_size void 3235inline_size void
1781loop_fork (EV_P) 3236loop_fork (EV_P)
1782{ 3237{
1783#if EV_USE_PORT 3238#if EV_USE_PORT
1784 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3239 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1785#endif 3240#endif
1786#if EV_USE_KQUEUE 3241#if EV_USE_KQUEUE
1787 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 3242 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
3243#endif
3244#if EV_USE_IOURING
3245 if (backend == EVBACKEND_IOURING ) iouring_fork (EV_A);
3246#endif
3247#if EV_USE_LINUXAIO
3248 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
1788#endif 3249#endif
1789#if EV_USE_EPOLL 3250#if EV_USE_EPOLL
1790 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3251 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
1791#endif 3252#endif
1792#if EV_USE_INOTIFY 3253#if EV_USE_INOTIFY
1793 infy_fork (EV_A); 3254 infy_fork (EV_A);
1794#endif 3255#endif
1795 3256
3257#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1796 if (ev_is_active (&pipe_w)) 3258 if (ev_is_active (&pipe_w) && postfork != 2)
1797 { 3259 {
1798 /* this "locks" the handlers against writing to the pipe */ 3260 /* 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 3261
1805 ev_ref (EV_A); 3262 ev_ref (EV_A);
1806 ev_io_stop (EV_A_ &pipe_w); 3263 ev_io_stop (EV_A_ &pipe_w);
1807 3264
1808#if EV_USE_EVENTFD
1809 if (evfd >= 0)
1810 close (evfd);
1811#endif
1812
1813 if (evpipe [0] >= 0) 3265 if (evpipe [0] >= 0)
1814 {
1815 EV_WIN32_CLOSE_FD (evpipe [0]); 3266 EV_WIN32_CLOSE_FD (evpipe [0]);
1816 EV_WIN32_CLOSE_FD (evpipe [1]);
1817 }
1818 3267
1819#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1820 evpipe_init (EV_A); 3268 evpipe_init (EV_A);
1821 /* now iterate over everything, in case we missed something */ 3269 /* iterate over everything, in case we missed something before */
1822 pipecb (EV_A_ &pipe_w, EV_READ); 3270 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1823#endif
1824 } 3271 }
3272#endif
1825 3273
1826 postfork = 0; 3274 postfork = 0;
1827} 3275}
1828 3276
1829#if EV_MULTIPLICITY 3277#if EV_MULTIPLICITY
1830 3278
3279ecb_cold
1831struct ev_loop * 3280struct ev_loop *
1832ev_loop_new (unsigned int flags) 3281ev_loop_new (unsigned int flags) EV_NOEXCEPT
1833{ 3282{
1834 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3283 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1835 3284
1836 memset (EV_A, 0, sizeof (struct ev_loop)); 3285 memset (EV_A, 0, sizeof (struct ev_loop));
1837 loop_init (EV_A_ flags); 3286 loop_init (EV_A_ flags);
1838 3287
1839 if (ev_backend (EV_A)) 3288 if (ev_backend (EV_A))
1840 return EV_A; 3289 return EV_A;
1841 3290
3291 ev_free (EV_A);
1842 return 0; 3292 return 0;
1843} 3293}
1844 3294
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 */ 3295#endif /* multiplicity */
1858 3296
1859#if EV_VERIFY 3297#if EV_VERIFY
1860static void noinline 3298ecb_noinline ecb_cold
3299static void
1861verify_watcher (EV_P_ W w) 3300verify_watcher (EV_P_ W w)
1862{ 3301{
1863 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3302 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1864 3303
1865 if (w->pending) 3304 if (w->pending)
1866 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3305 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1867} 3306}
1868 3307
1869static void noinline 3308ecb_noinline ecb_cold
3309static void
1870verify_heap (EV_P_ ANHE *heap, int N) 3310verify_heap (EV_P_ ANHE *heap, int N)
1871{ 3311{
1872 int i; 3312 int i;
1873 3313
1874 for (i = HEAP0; i < N + HEAP0; ++i) 3314 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1879 3319
1880 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3320 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1881 } 3321 }
1882} 3322}
1883 3323
1884static void noinline 3324ecb_noinline ecb_cold
3325static void
1885array_verify (EV_P_ W *ws, int cnt) 3326array_verify (EV_P_ W *ws, int cnt)
1886{ 3327{
1887 while (cnt--) 3328 while (cnt--)
1888 { 3329 {
1889 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3330 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
1891 } 3332 }
1892} 3333}
1893#endif 3334#endif
1894 3335
1895#if EV_FEATURE_API 3336#if EV_FEATURE_API
1896void 3337void ecb_cold
1897ev_verify (EV_P) 3338ev_verify (EV_P) EV_NOEXCEPT
1898{ 3339{
1899#if EV_VERIFY 3340#if EV_VERIFY
1900 int i; 3341 int i;
1901 WL w; 3342 WL w, w2;
1902 3343
1903 assert (activecnt >= -1); 3344 assert (activecnt >= -1);
1904 3345
1905 assert (fdchangemax >= fdchangecnt); 3346 assert (fdchangemax >= fdchangecnt);
1906 for (i = 0; i < fdchangecnt; ++i) 3347 for (i = 0; i < fdchangecnt; ++i)
1907 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3348 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1908 3349
1909 assert (anfdmax >= 0); 3350 assert (anfdmax >= 0);
1910 for (i = 0; i < anfdmax; ++i) 3351 for (i = 0; i < anfdmax; ++i)
3352 {
3353 int j = 0;
3354
1911 for (w = anfds [i].head; w; w = w->next) 3355 for (w = w2 = anfds [i].head; w; w = w->next)
1912 { 3356 {
1913 verify_watcher (EV_A_ (W)w); 3357 verify_watcher (EV_A_ (W)w);
3358
3359 if (j++ & 1)
3360 {
3361 assert (("libev: io watcher list contains a loop", w != w2));
3362 w2 = w2->next;
3363 }
3364
1914 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3365 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)); 3366 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1916 } 3367 }
3368 }
1917 3369
1918 assert (timermax >= timercnt); 3370 assert (timermax >= timercnt);
1919 verify_heap (EV_A_ timers, timercnt); 3371 verify_heap (EV_A_ timers, timercnt);
1920 3372
1921#if EV_PERIODIC_ENABLE 3373#if EV_PERIODIC_ENABLE
… …
1936#if EV_FORK_ENABLE 3388#if EV_FORK_ENABLE
1937 assert (forkmax >= forkcnt); 3389 assert (forkmax >= forkcnt);
1938 array_verify (EV_A_ (W *)forks, forkcnt); 3390 array_verify (EV_A_ (W *)forks, forkcnt);
1939#endif 3391#endif
1940 3392
3393#if EV_CLEANUP_ENABLE
3394 assert (cleanupmax >= cleanupcnt);
3395 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
3396#endif
3397
1941#if EV_ASYNC_ENABLE 3398#if EV_ASYNC_ENABLE
1942 assert (asyncmax >= asynccnt); 3399 assert (asyncmax >= asynccnt);
1943 array_verify (EV_A_ (W *)asyncs, asynccnt); 3400 array_verify (EV_A_ (W *)asyncs, asynccnt);
1944#endif 3401#endif
1945 3402
… …
1962#endif 3419#endif
1963} 3420}
1964#endif 3421#endif
1965 3422
1966#if EV_MULTIPLICITY 3423#if EV_MULTIPLICITY
3424ecb_cold
1967struct ev_loop * 3425struct ev_loop *
1968ev_default_loop_init (unsigned int flags)
1969#else 3426#else
1970int 3427int
3428#endif
1971ev_default_loop (unsigned int flags) 3429ev_default_loop (unsigned int flags) EV_NOEXCEPT
1972#endif
1973{ 3430{
1974 if (!ev_default_loop_ptr) 3431 if (!ev_default_loop_ptr)
1975 { 3432 {
1976#if EV_MULTIPLICITY 3433#if EV_MULTIPLICITY
1977 EV_P = ev_default_loop_ptr = &default_loop_struct; 3434 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1996 3453
1997 return ev_default_loop_ptr; 3454 return ev_default_loop_ptr;
1998} 3455}
1999 3456
2000void 3457void
2001ev_default_destroy (void) 3458ev_loop_fork (EV_P) EV_NOEXCEPT
2002{ 3459{
2003#if EV_MULTIPLICITY 3460 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} 3461}
2026 3462
2027/*****************************************************************************/ 3463/*****************************************************************************/
2028 3464
2029void 3465void
… …
2031{ 3467{
2032 EV_CB_INVOKE ((W)w, revents); 3468 EV_CB_INVOKE ((W)w, revents);
2033} 3469}
2034 3470
2035unsigned int 3471unsigned int
2036ev_pending_count (EV_P) 3472ev_pending_count (EV_P) EV_NOEXCEPT
2037{ 3473{
2038 int pri; 3474 int pri;
2039 unsigned int count = 0; 3475 unsigned int count = 0;
2040 3476
2041 for (pri = NUMPRI; pri--; ) 3477 for (pri = NUMPRI; pri--; )
2042 count += pendingcnt [pri]; 3478 count += pendingcnt [pri];
2043 3479
2044 return count; 3480 return count;
2045} 3481}
2046 3482
2047void noinline 3483ecb_noinline
3484void
2048ev_invoke_pending (EV_P) 3485ev_invoke_pending (EV_P)
2049{ 3486{
2050 int pri; 3487 pendingpri = NUMPRI;
2051 3488
2052 for (pri = NUMPRI; pri--; ) 3489 do
3490 {
3491 --pendingpri;
3492
3493 /* pendingpri possibly gets modified in the inner loop */
2053 while (pendingcnt [pri]) 3494 while (pendingcnt [pendingpri])
2054 { 3495 {
2055 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3496 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2056 3497
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; 3498 p->w->pending = 0;
2061 EV_CB_INVOKE (p->w, p->events); 3499 EV_CB_INVOKE (p->w, p->events);
2062 EV_FREQUENT_CHECK; 3500 EV_FREQUENT_CHECK;
2063 } 3501 }
3502 }
3503 while (pendingpri);
2064} 3504}
2065 3505
2066#if EV_IDLE_ENABLE 3506#if EV_IDLE_ENABLE
2067/* make idle watchers pending. this handles the "call-idle */ 3507/* make idle watchers pending. this handles the "call-idle */
2068/* only when higher priorities are idle" logic */ 3508/* only when higher priorities are idle" logic */
2069inline_size void 3509inline_size void
2070idle_reify (EV_P) 3510idle_reify (EV_P)
2071{ 3511{
2072 if (expect_false (idleall)) 3512 if (ecb_expect_false (idleall))
2073 { 3513 {
2074 int pri; 3514 int pri;
2075 3515
2076 for (pri = NUMPRI; pri--; ) 3516 for (pri = NUMPRI; pri--; )
2077 { 3517 {
… …
2107 { 3547 {
2108 ev_at (w) += w->repeat; 3548 ev_at (w) += w->repeat;
2109 if (ev_at (w) < mn_now) 3549 if (ev_at (w) < mn_now)
2110 ev_at (w) = mn_now; 3550 ev_at (w) = mn_now;
2111 3551
2112 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 3552 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > EV_TS_CONST (0.)));
2113 3553
2114 ANHE_at_cache (timers [HEAP0]); 3554 ANHE_at_cache (timers [HEAP0]);
2115 downheap (timers, timercnt, HEAP0); 3555 downheap (timers, timercnt, HEAP0);
2116 } 3556 }
2117 else 3557 else
… …
2125 feed_reverse_done (EV_A_ EV_TIMER); 3565 feed_reverse_done (EV_A_ EV_TIMER);
2126 } 3566 }
2127} 3567}
2128 3568
2129#if EV_PERIODIC_ENABLE 3569#if EV_PERIODIC_ENABLE
3570
3571ecb_noinline
3572static void
3573periodic_recalc (EV_P_ ev_periodic *w)
3574{
3575 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3576 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3577
3578 /* the above almost always errs on the low side */
3579 while (at <= ev_rt_now)
3580 {
3581 ev_tstamp nat = at + w->interval;
3582
3583 /* when resolution fails us, we use ev_rt_now */
3584 if (ecb_expect_false (nat == at))
3585 {
3586 at = ev_rt_now;
3587 break;
3588 }
3589
3590 at = nat;
3591 }
3592
3593 ev_at (w) = at;
3594}
3595
2130/* make periodics pending */ 3596/* make periodics pending */
2131inline_size void 3597inline_size void
2132periodics_reify (EV_P) 3598periodics_reify (EV_P)
2133{ 3599{
2134 EV_FREQUENT_CHECK; 3600 EV_FREQUENT_CHECK;
2135 3601
2136 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3602 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2137 { 3603 {
2138 int feed_count = 0;
2139
2140 do 3604 do
2141 { 3605 {
2142 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3606 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2143 3607
2144 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3608 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2153 ANHE_at_cache (periodics [HEAP0]); 3617 ANHE_at_cache (periodics [HEAP0]);
2154 downheap (periodics, periodiccnt, HEAP0); 3618 downheap (periodics, periodiccnt, HEAP0);
2155 } 3619 }
2156 else if (w->interval) 3620 else if (w->interval)
2157 { 3621 {
2158 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3622 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]); 3623 ANHE_at_cache (periodics [HEAP0]);
2173 downheap (periodics, periodiccnt, HEAP0); 3624 downheap (periodics, periodiccnt, HEAP0);
2174 } 3625 }
2175 else 3626 else
2176 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3627 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2184 } 3635 }
2185} 3636}
2186 3637
2187/* simply recalculate all periodics */ 3638/* simply recalculate all periodics */
2188/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3639/* TODO: maybe ensure that at least one event happens when jumping forward? */
2189static void noinline 3640ecb_noinline ecb_cold
3641static void
2190periodics_reschedule (EV_P) 3642periodics_reschedule (EV_P)
2191{ 3643{
2192 int i; 3644 int i;
2193 3645
2194 /* adjust periodics after time jump */ 3646 /* adjust periodics after time jump */
… …
2197 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3649 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2198 3650
2199 if (w->reschedule_cb) 3651 if (w->reschedule_cb)
2200 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3652 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2201 else if (w->interval) 3653 else if (w->interval)
2202 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3654 periodic_recalc (EV_A_ w);
2203 3655
2204 ANHE_at_cache (periodics [i]); 3656 ANHE_at_cache (periodics [i]);
2205 } 3657 }
2206 3658
2207 reheap (periodics, periodiccnt); 3659 reheap (periodics, periodiccnt);
2208} 3660}
2209#endif 3661#endif
2210 3662
2211/* adjust all timers by a given offset */ 3663/* adjust all timers by a given offset */
2212static void noinline 3664ecb_noinline ecb_cold
3665static void
2213timers_reschedule (EV_P_ ev_tstamp adjust) 3666timers_reschedule (EV_P_ ev_tstamp adjust)
2214{ 3667{
2215 int i; 3668 int i;
2216 3669
2217 for (i = 0; i < timercnt; ++i) 3670 for (i = 0; i < timercnt; ++i)
… …
2226/* also detect if there was a timejump, and act accordingly */ 3679/* also detect if there was a timejump, and act accordingly */
2227inline_speed void 3680inline_speed void
2228time_update (EV_P_ ev_tstamp max_block) 3681time_update (EV_P_ ev_tstamp max_block)
2229{ 3682{
2230#if EV_USE_MONOTONIC 3683#if EV_USE_MONOTONIC
2231 if (expect_true (have_monotonic)) 3684 if (ecb_expect_true (have_monotonic))
2232 { 3685 {
2233 int i; 3686 int i;
2234 ev_tstamp odiff = rtmn_diff; 3687 ev_tstamp odiff = rtmn_diff;
2235 3688
2236 mn_now = get_clock (); 3689 mn_now = get_clock ();
2237 3690
2238 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3691 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
2239 /* interpolate in the meantime */ 3692 /* interpolate in the meantime */
2240 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 3693 if (ecb_expect_true (mn_now - now_floor < EV_TS_CONST (MIN_TIMEJUMP * .5)))
2241 { 3694 {
2242 ev_rt_now = rtmn_diff + mn_now; 3695 ev_rt_now = rtmn_diff + mn_now;
2243 return; 3696 return;
2244 } 3697 }
2245 3698
… …
2254 * doesn't hurt either as we only do this on time-jumps or 3707 * doesn't hurt either as we only do this on time-jumps or
2255 * in the unlikely event of having been preempted here. 3708 * in the unlikely event of having been preempted here.
2256 */ 3709 */
2257 for (i = 4; --i; ) 3710 for (i = 4; --i; )
2258 { 3711 {
3712 ev_tstamp diff;
2259 rtmn_diff = ev_rt_now - mn_now; 3713 rtmn_diff = ev_rt_now - mn_now;
2260 3714
2261 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3715 diff = odiff - rtmn_diff;
3716
3717 if (ecb_expect_true ((diff < EV_TS_CONST (0.) ? -diff : diff) < EV_TS_CONST (MIN_TIMEJUMP)))
2262 return; /* all is well */ 3718 return; /* all is well */
2263 3719
2264 ev_rt_now = ev_time (); 3720 ev_rt_now = ev_time ();
2265 mn_now = get_clock (); 3721 mn_now = get_clock ();
2266 now_floor = mn_now; 3722 now_floor = mn_now;
… …
2275 else 3731 else
2276#endif 3732#endif
2277 { 3733 {
2278 ev_rt_now = ev_time (); 3734 ev_rt_now = ev_time ();
2279 3735
2280 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 3736 if (ecb_expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + EV_TS_CONST (MIN_TIMEJUMP)))
2281 { 3737 {
2282 /* adjust timers. this is easy, as the offset is the same for all of them */ 3738 /* 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); 3739 timers_reschedule (EV_A_ ev_rt_now - mn_now);
2284#if EV_PERIODIC_ENABLE 3740#if EV_PERIODIC_ENABLE
2285 periodics_reschedule (EV_A); 3741 periodics_reschedule (EV_A);
… …
2288 3744
2289 mn_now = ev_rt_now; 3745 mn_now = ev_rt_now;
2290 } 3746 }
2291} 3747}
2292 3748
2293void 3749int
2294ev_loop (EV_P_ int flags) 3750ev_run (EV_P_ int flags)
2295{ 3751{
2296#if EV_FEATURE_API 3752#if EV_FEATURE_API
2297 ++loop_depth; 3753 ++loop_depth;
2298#endif 3754#endif
2299 3755
2300 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 3756 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2301 3757
2302 loop_done = EVUNLOOP_CANCEL; 3758 loop_done = EVBREAK_CANCEL;
2303 3759
2304 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 3760 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2305 3761
2306 do 3762 do
2307 { 3763 {
2308#if EV_VERIFY >= 2 3764#if EV_VERIFY >= 2
2309 ev_verify (EV_A); 3765 ev_verify (EV_A);
2310#endif 3766#endif
2311 3767
2312#ifndef _WIN32 3768#ifndef _WIN32
2313 if (expect_false (curpid)) /* penalise the forking check even more */ 3769 if (ecb_expect_false (curpid)) /* penalise the forking check even more */
2314 if (expect_false (getpid () != curpid)) 3770 if (ecb_expect_false (getpid () != curpid))
2315 { 3771 {
2316 curpid = getpid (); 3772 curpid = getpid ();
2317 postfork = 1; 3773 postfork = 1;
2318 } 3774 }
2319#endif 3775#endif
2320 3776
2321#if EV_FORK_ENABLE 3777#if EV_FORK_ENABLE
2322 /* we might have forked, so queue fork handlers */ 3778 /* we might have forked, so queue fork handlers */
2323 if (expect_false (postfork)) 3779 if (ecb_expect_false (postfork))
2324 if (forkcnt) 3780 if (forkcnt)
2325 { 3781 {
2326 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3782 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2327 EV_INVOKE_PENDING; 3783 EV_INVOKE_PENDING;
2328 } 3784 }
2329#endif 3785#endif
2330 3786
2331#if EV_PREPARE_ENABLE 3787#if EV_PREPARE_ENABLE
2332 /* queue prepare watchers (and execute them) */ 3788 /* queue prepare watchers (and execute them) */
2333 if (expect_false (preparecnt)) 3789 if (ecb_expect_false (preparecnt))
2334 { 3790 {
2335 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3791 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2336 EV_INVOKE_PENDING; 3792 EV_INVOKE_PENDING;
2337 } 3793 }
2338#endif 3794#endif
2339 3795
2340 if (expect_false (loop_done)) 3796 if (ecb_expect_false (loop_done))
2341 break; 3797 break;
2342 3798
2343 /* we might have forked, so reify kernel state if necessary */ 3799 /* we might have forked, so reify kernel state if necessary */
2344 if (expect_false (postfork)) 3800 if (ecb_expect_false (postfork))
2345 loop_fork (EV_A); 3801 loop_fork (EV_A);
2346 3802
2347 /* update fd-related kernel structures */ 3803 /* update fd-related kernel structures */
2348 fd_reify (EV_A); 3804 fd_reify (EV_A);
2349 3805
2350 /* calculate blocking time */ 3806 /* calculate blocking time */
2351 { 3807 {
2352 ev_tstamp waittime = 0.; 3808 ev_tstamp waittime = 0.;
2353 ev_tstamp sleeptime = 0.; 3809 ev_tstamp sleeptime = 0.;
2354 3810
3811 /* remember old timestamp for io_blocktime calculation */
3812 ev_tstamp prev_mn_now = mn_now;
3813
3814 /* update time to cancel out callback processing overhead */
3815 time_update (EV_A_ EV_TS_CONST (EV_TSTAMP_HUGE));
3816
3817 /* from now on, we want a pipe-wake-up */
3818 pipe_write_wanted = 1;
3819
3820 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3821
2355 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3822 if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2356 { 3823 {
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; 3824 waittime = EV_TS_CONST (MAX_BLOCKTIME);
2364 3825
2365 if (timercnt) 3826 if (timercnt)
2366 { 3827 {
2367 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3828 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2368 if (waittime > to) waittime = to; 3829 if (waittime > to) waittime = to;
2369 } 3830 }
2370 3831
2371#if EV_PERIODIC_ENABLE 3832#if EV_PERIODIC_ENABLE
2372 if (periodiccnt) 3833 if (periodiccnt)
2373 { 3834 {
2374 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3835 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2375 if (waittime > to) waittime = to; 3836 if (waittime > to) waittime = to;
2376 } 3837 }
2377#endif 3838#endif
2378 3839
2379 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3840 /* don't let timeouts decrease the waittime below timeout_blocktime */
2380 if (expect_false (waittime < timeout_blocktime)) 3841 if (ecb_expect_false (waittime < timeout_blocktime))
2381 waittime = timeout_blocktime; 3842 waittime = timeout_blocktime;
2382 3843
3844 /* at this point, we NEED to wait, so we have to ensure */
3845 /* to pass a minimum nonzero value to the backend */
3846 if (ecb_expect_false (waittime < backend_mintime))
3847 waittime = backend_mintime;
3848
2383 /* extra check because io_blocktime is commonly 0 */ 3849 /* extra check because io_blocktime is commonly 0 */
2384 if (expect_false (io_blocktime)) 3850 if (ecb_expect_false (io_blocktime))
2385 { 3851 {
2386 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3852 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2387 3853
2388 if (sleeptime > waittime - backend_fudge) 3854 if (sleeptime > waittime - backend_mintime)
2389 sleeptime = waittime - backend_fudge; 3855 sleeptime = waittime - backend_mintime;
2390 3856
2391 if (expect_true (sleeptime > 0.)) 3857 if (ecb_expect_true (sleeptime > EV_TS_CONST (0.)))
2392 { 3858 {
2393 ev_sleep (sleeptime); 3859 ev_sleep (sleeptime);
2394 waittime -= sleeptime; 3860 waittime -= sleeptime;
2395 } 3861 }
2396 } 3862 }
2397 } 3863 }
2398 3864
2399#if EV_FEATURE_API 3865#if EV_FEATURE_API
2400 ++loop_count; 3866 ++loop_count;
2401#endif 3867#endif
2402 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3868 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2403 backend_poll (EV_A_ waittime); 3869 backend_poll (EV_A_ waittime);
2404 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 3870 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3871
3872 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3873
3874 ECB_MEMORY_FENCE_ACQUIRE;
3875 if (pipe_write_skipped)
3876 {
3877 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3878 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3879 }
2405 3880
2406 /* update ev_rt_now, do magic */ 3881 /* update ev_rt_now, do magic */
2407 time_update (EV_A_ waittime + sleeptime); 3882 time_update (EV_A_ waittime + sleeptime);
2408 } 3883 }
2409 3884
… …
2418 idle_reify (EV_A); 3893 idle_reify (EV_A);
2419#endif 3894#endif
2420 3895
2421#if EV_CHECK_ENABLE 3896#if EV_CHECK_ENABLE
2422 /* queue check watchers, to be executed first */ 3897 /* queue check watchers, to be executed first */
2423 if (expect_false (checkcnt)) 3898 if (ecb_expect_false (checkcnt))
2424 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3899 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2425#endif 3900#endif
2426 3901
2427 EV_INVOKE_PENDING; 3902 EV_INVOKE_PENDING;
2428 } 3903 }
2429 while (expect_true ( 3904 while (ecb_expect_true (
2430 activecnt 3905 activecnt
2431 && !loop_done 3906 && !loop_done
2432 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3907 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2433 )); 3908 ));
2434 3909
2435 if (loop_done == EVUNLOOP_ONE) 3910 if (loop_done == EVBREAK_ONE)
2436 loop_done = EVUNLOOP_CANCEL; 3911 loop_done = EVBREAK_CANCEL;
2437 3912
2438#if EV_FEATURE_API 3913#if EV_FEATURE_API
2439 --loop_depth; 3914 --loop_depth;
2440#endif 3915#endif
2441}
2442 3916
3917 return activecnt;
3918}
3919
2443void 3920void
2444ev_unloop (EV_P_ int how) 3921ev_break (EV_P_ int how) EV_NOEXCEPT
2445{ 3922{
2446 loop_done = how; 3923 loop_done = how;
2447} 3924}
2448 3925
2449void 3926void
2450ev_ref (EV_P) 3927ev_ref (EV_P) EV_NOEXCEPT
2451{ 3928{
2452 ++activecnt; 3929 ++activecnt;
2453} 3930}
2454 3931
2455void 3932void
2456ev_unref (EV_P) 3933ev_unref (EV_P) EV_NOEXCEPT
2457{ 3934{
2458 --activecnt; 3935 --activecnt;
2459} 3936}
2460 3937
2461void 3938void
2462ev_now_update (EV_P) 3939ev_now_update (EV_P) EV_NOEXCEPT
2463{ 3940{
2464 time_update (EV_A_ 1e100); 3941 time_update (EV_A_ EV_TSTAMP_HUGE);
2465} 3942}
2466 3943
2467void 3944void
2468ev_suspend (EV_P) 3945ev_suspend (EV_P) EV_NOEXCEPT
2469{ 3946{
2470 ev_now_update (EV_A); 3947 ev_now_update (EV_A);
2471} 3948}
2472 3949
2473void 3950void
2474ev_resume (EV_P) 3951ev_resume (EV_P) EV_NOEXCEPT
2475{ 3952{
2476 ev_tstamp mn_prev = mn_now; 3953 ev_tstamp mn_prev = mn_now;
2477 3954
2478 ev_now_update (EV_A); 3955 ev_now_update (EV_A);
2479 timers_reschedule (EV_A_ mn_now - mn_prev); 3956 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2496inline_size void 3973inline_size void
2497wlist_del (WL *head, WL elem) 3974wlist_del (WL *head, WL elem)
2498{ 3975{
2499 while (*head) 3976 while (*head)
2500 { 3977 {
2501 if (expect_true (*head == elem)) 3978 if (ecb_expect_true (*head == elem))
2502 { 3979 {
2503 *head = elem->next; 3980 *head = elem->next;
2504 break; 3981 break;
2505 } 3982 }
2506 3983
… …
2518 w->pending = 0; 3995 w->pending = 0;
2519 } 3996 }
2520} 3997}
2521 3998
2522int 3999int
2523ev_clear_pending (EV_P_ void *w) 4000ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
2524{ 4001{
2525 W w_ = (W)w; 4002 W w_ = (W)w;
2526 int pending = w_->pending; 4003 int pending = w_->pending;
2527 4004
2528 if (expect_true (pending)) 4005 if (ecb_expect_true (pending))
2529 { 4006 {
2530 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 4007 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2531 p->w = (W)&pending_w; 4008 p->w = (W)&pending_w;
2532 w_->pending = 0; 4009 w_->pending = 0;
2533 return p->events; 4010 return p->events;
… …
2560 w->active = 0; 4037 w->active = 0;
2561} 4038}
2562 4039
2563/*****************************************************************************/ 4040/*****************************************************************************/
2564 4041
2565void noinline 4042ecb_noinline
4043void
2566ev_io_start (EV_P_ ev_io *w) 4044ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
2567{ 4045{
2568 int fd = w->fd; 4046 int fd = w->fd;
2569 4047
2570 if (expect_false (ev_is_active (w))) 4048 if (ecb_expect_false (ev_is_active (w)))
2571 return; 4049 return;
2572 4050
2573 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 4051 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)))); 4052 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2575 4053
4054#if EV_VERIFY >= 2
4055 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
4056#endif
2576 EV_FREQUENT_CHECK; 4057 EV_FREQUENT_CHECK;
2577 4058
2578 ev_start (EV_A_ (W)w, 1); 4059 ev_start (EV_A_ (W)w, 1);
2579 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 4060 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
2580 wlist_add (&anfds[fd].head, (WL)w); 4061 wlist_add (&anfds[fd].head, (WL)w);
4062
4063 /* common bug, apparently */
4064 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
2581 4065
2582 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 4066 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2583 w->events &= ~EV__IOFDSET; 4067 w->events &= ~EV__IOFDSET;
2584 4068
2585 EV_FREQUENT_CHECK; 4069 EV_FREQUENT_CHECK;
2586} 4070}
2587 4071
2588void noinline 4072ecb_noinline
4073void
2589ev_io_stop (EV_P_ ev_io *w) 4074ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
2590{ 4075{
2591 clear_pending (EV_A_ (W)w); 4076 clear_pending (EV_A_ (W)w);
2592 if (expect_false (!ev_is_active (w))) 4077 if (ecb_expect_false (!ev_is_active (w)))
2593 return; 4078 return;
2594 4079
2595 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 4080 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2596 4081
4082#if EV_VERIFY >= 2
4083 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
4084#endif
2597 EV_FREQUENT_CHECK; 4085 EV_FREQUENT_CHECK;
2598 4086
2599 wlist_del (&anfds[w->fd].head, (WL)w); 4087 wlist_del (&anfds[w->fd].head, (WL)w);
2600 ev_stop (EV_A_ (W)w); 4088 ev_stop (EV_A_ (W)w);
2601 4089
2602 fd_change (EV_A_ w->fd, 1); 4090 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2603 4091
2604 EV_FREQUENT_CHECK; 4092 EV_FREQUENT_CHECK;
2605} 4093}
2606 4094
2607void noinline 4095ecb_noinline
4096void
2608ev_timer_start (EV_P_ ev_timer *w) 4097ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
2609{ 4098{
2610 if (expect_false (ev_is_active (w))) 4099 if (ecb_expect_false (ev_is_active (w)))
2611 return; 4100 return;
2612 4101
2613 ev_at (w) += mn_now; 4102 ev_at (w) += mn_now;
2614 4103
2615 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 4104 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2616 4105
2617 EV_FREQUENT_CHECK; 4106 EV_FREQUENT_CHECK;
2618 4107
2619 ++timercnt; 4108 ++timercnt;
2620 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 4109 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
2621 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 4110 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
2622 ANHE_w (timers [ev_active (w)]) = (WT)w; 4111 ANHE_w (timers [ev_active (w)]) = (WT)w;
2623 ANHE_at_cache (timers [ev_active (w)]); 4112 ANHE_at_cache (timers [ev_active (w)]);
2624 upheap (timers, ev_active (w)); 4113 upheap (timers, ev_active (w));
2625 4114
2626 EV_FREQUENT_CHECK; 4115 EV_FREQUENT_CHECK;
2627 4116
2628 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 4117 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2629} 4118}
2630 4119
2631void noinline 4120ecb_noinline
4121void
2632ev_timer_stop (EV_P_ ev_timer *w) 4122ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
2633{ 4123{
2634 clear_pending (EV_A_ (W)w); 4124 clear_pending (EV_A_ (W)w);
2635 if (expect_false (!ev_is_active (w))) 4125 if (ecb_expect_false (!ev_is_active (w)))
2636 return; 4126 return;
2637 4127
2638 EV_FREQUENT_CHECK; 4128 EV_FREQUENT_CHECK;
2639 4129
2640 { 4130 {
… …
2642 4132
2643 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 4133 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2644 4134
2645 --timercnt; 4135 --timercnt;
2646 4136
2647 if (expect_true (active < timercnt + HEAP0)) 4137 if (ecb_expect_true (active < timercnt + HEAP0))
2648 { 4138 {
2649 timers [active] = timers [timercnt + HEAP0]; 4139 timers [active] = timers [timercnt + HEAP0];
2650 adjustheap (timers, timercnt, active); 4140 adjustheap (timers, timercnt, active);
2651 } 4141 }
2652 } 4142 }
… …
2656 ev_stop (EV_A_ (W)w); 4146 ev_stop (EV_A_ (W)w);
2657 4147
2658 EV_FREQUENT_CHECK; 4148 EV_FREQUENT_CHECK;
2659} 4149}
2660 4150
2661void noinline 4151ecb_noinline
4152void
2662ev_timer_again (EV_P_ ev_timer *w) 4153ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
2663{ 4154{
2664 EV_FREQUENT_CHECK; 4155 EV_FREQUENT_CHECK;
4156
4157 clear_pending (EV_A_ (W)w);
2665 4158
2666 if (ev_is_active (w)) 4159 if (ev_is_active (w))
2667 { 4160 {
2668 if (w->repeat) 4161 if (w->repeat)
2669 { 4162 {
… …
2682 4175
2683 EV_FREQUENT_CHECK; 4176 EV_FREQUENT_CHECK;
2684} 4177}
2685 4178
2686ev_tstamp 4179ev_tstamp
2687ev_timer_remaining (EV_P_ ev_timer *w) 4180ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
2688{ 4181{
2689 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4182 return ev_at (w) - (ev_is_active (w) ? mn_now : EV_TS_CONST (0.));
2690} 4183}
2691 4184
2692#if EV_PERIODIC_ENABLE 4185#if EV_PERIODIC_ENABLE
2693void noinline 4186ecb_noinline
4187void
2694ev_periodic_start (EV_P_ ev_periodic *w) 4188ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
2695{ 4189{
2696 if (expect_false (ev_is_active (w))) 4190 if (ecb_expect_false (ev_is_active (w)))
2697 return; 4191 return;
2698 4192
2699 if (w->reschedule_cb) 4193 if (w->reschedule_cb)
2700 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4194 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2701 else if (w->interval) 4195 else if (w->interval)
2702 { 4196 {
2703 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 4197 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 */ 4198 periodic_recalc (EV_A_ w);
2705 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2706 } 4199 }
2707 else 4200 else
2708 ev_at (w) = w->offset; 4201 ev_at (w) = w->offset;
2709 4202
2710 EV_FREQUENT_CHECK; 4203 EV_FREQUENT_CHECK;
2711 4204
2712 ++periodiccnt; 4205 ++periodiccnt;
2713 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4206 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2714 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4207 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
2715 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4208 ANHE_w (periodics [ev_active (w)]) = (WT)w;
2716 ANHE_at_cache (periodics [ev_active (w)]); 4209 ANHE_at_cache (periodics [ev_active (w)]);
2717 upheap (periodics, ev_active (w)); 4210 upheap (periodics, ev_active (w));
2718 4211
2719 EV_FREQUENT_CHECK; 4212 EV_FREQUENT_CHECK;
2720 4213
2721 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4214 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2722} 4215}
2723 4216
2724void noinline 4217ecb_noinline
4218void
2725ev_periodic_stop (EV_P_ ev_periodic *w) 4219ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
2726{ 4220{
2727 clear_pending (EV_A_ (W)w); 4221 clear_pending (EV_A_ (W)w);
2728 if (expect_false (!ev_is_active (w))) 4222 if (ecb_expect_false (!ev_is_active (w)))
2729 return; 4223 return;
2730 4224
2731 EV_FREQUENT_CHECK; 4225 EV_FREQUENT_CHECK;
2732 4226
2733 { 4227 {
… …
2735 4229
2736 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 4230 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2737 4231
2738 --periodiccnt; 4232 --periodiccnt;
2739 4233
2740 if (expect_true (active < periodiccnt + HEAP0)) 4234 if (ecb_expect_true (active < periodiccnt + HEAP0))
2741 { 4235 {
2742 periodics [active] = periodics [periodiccnt + HEAP0]; 4236 periodics [active] = periodics [periodiccnt + HEAP0];
2743 adjustheap (periodics, periodiccnt, active); 4237 adjustheap (periodics, periodiccnt, active);
2744 } 4238 }
2745 } 4239 }
… …
2747 ev_stop (EV_A_ (W)w); 4241 ev_stop (EV_A_ (W)w);
2748 4242
2749 EV_FREQUENT_CHECK; 4243 EV_FREQUENT_CHECK;
2750} 4244}
2751 4245
2752void noinline 4246ecb_noinline
4247void
2753ev_periodic_again (EV_P_ ev_periodic *w) 4248ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
2754{ 4249{
2755 /* TODO: use adjustheap and recalculation */ 4250 /* TODO: use adjustheap and recalculation */
2756 ev_periodic_stop (EV_A_ w); 4251 ev_periodic_stop (EV_A_ w);
2757 ev_periodic_start (EV_A_ w); 4252 ev_periodic_start (EV_A_ w);
2758} 4253}
… …
2762# define SA_RESTART 0 4257# define SA_RESTART 0
2763#endif 4258#endif
2764 4259
2765#if EV_SIGNAL_ENABLE 4260#if EV_SIGNAL_ENABLE
2766 4261
2767void noinline 4262ecb_noinline
4263void
2768ev_signal_start (EV_P_ ev_signal *w) 4264ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
2769{ 4265{
2770 if (expect_false (ev_is_active (w))) 4266 if (ecb_expect_false (ev_is_active (w)))
2771 return; 4267 return;
2772 4268
2773 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4269 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2774 4270
2775#if EV_MULTIPLICITY 4271#if EV_MULTIPLICITY
2776 assert (("libev: a signal must not be attached to two different loops", 4272 assert (("libev: a signal must not be attached to two different loops",
2777 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4273 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2778 4274
2779 signals [w->signum - 1].loop = EV_A; 4275 signals [w->signum - 1].loop = EV_A;
4276 ECB_MEMORY_FENCE_RELEASE;
2780#endif 4277#endif
2781 4278
2782 EV_FREQUENT_CHECK; 4279 EV_FREQUENT_CHECK;
2783 4280
2784#if EV_USE_SIGNALFD 4281#if EV_USE_SIGNALFD
… …
2831 sa.sa_handler = ev_sighandler; 4328 sa.sa_handler = ev_sighandler;
2832 sigfillset (&sa.sa_mask); 4329 sigfillset (&sa.sa_mask);
2833 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 4330 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2834 sigaction (w->signum, &sa, 0); 4331 sigaction (w->signum, &sa, 0);
2835 4332
4333 if (origflags & EVFLAG_NOSIGMASK)
4334 {
2836 sigemptyset (&sa.sa_mask); 4335 sigemptyset (&sa.sa_mask);
2837 sigaddset (&sa.sa_mask, w->signum); 4336 sigaddset (&sa.sa_mask, w->signum);
2838 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 4337 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
4338 }
2839#endif 4339#endif
2840 } 4340 }
2841 4341
2842 EV_FREQUENT_CHECK; 4342 EV_FREQUENT_CHECK;
2843} 4343}
2844 4344
2845void noinline 4345ecb_noinline
4346void
2846ev_signal_stop (EV_P_ ev_signal *w) 4347ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
2847{ 4348{
2848 clear_pending (EV_A_ (W)w); 4349 clear_pending (EV_A_ (W)w);
2849 if (expect_false (!ev_is_active (w))) 4350 if (ecb_expect_false (!ev_is_active (w)))
2850 return; 4351 return;
2851 4352
2852 EV_FREQUENT_CHECK; 4353 EV_FREQUENT_CHECK;
2853 4354
2854 wlist_del (&signals [w->signum - 1].head, (WL)w); 4355 wlist_del (&signals [w->signum - 1].head, (WL)w);
… …
2882#endif 4383#endif
2883 4384
2884#if EV_CHILD_ENABLE 4385#if EV_CHILD_ENABLE
2885 4386
2886void 4387void
2887ev_child_start (EV_P_ ev_child *w) 4388ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
2888{ 4389{
2889#if EV_MULTIPLICITY 4390#if EV_MULTIPLICITY
2890 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4391 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2891#endif 4392#endif
2892 if (expect_false (ev_is_active (w))) 4393 if (ecb_expect_false (ev_is_active (w)))
2893 return; 4394 return;
2894 4395
2895 EV_FREQUENT_CHECK; 4396 EV_FREQUENT_CHECK;
2896 4397
2897 ev_start (EV_A_ (W)w, 1); 4398 ev_start (EV_A_ (W)w, 1);
… …
2899 4400
2900 EV_FREQUENT_CHECK; 4401 EV_FREQUENT_CHECK;
2901} 4402}
2902 4403
2903void 4404void
2904ev_child_stop (EV_P_ ev_child *w) 4405ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
2905{ 4406{
2906 clear_pending (EV_A_ (W)w); 4407 clear_pending (EV_A_ (W)w);
2907 if (expect_false (!ev_is_active (w))) 4408 if (ecb_expect_false (!ev_is_active (w)))
2908 return; 4409 return;
2909 4410
2910 EV_FREQUENT_CHECK; 4411 EV_FREQUENT_CHECK;
2911 4412
2912 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w); 4413 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
… …
2926 4427
2927#define DEF_STAT_INTERVAL 5.0074891 4428#define DEF_STAT_INTERVAL 5.0074891
2928#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4429#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2929#define MIN_STAT_INTERVAL 0.1074891 4430#define MIN_STAT_INTERVAL 0.1074891
2930 4431
2931static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4432ecb_noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2932 4433
2933#if EV_USE_INOTIFY 4434#if EV_USE_INOTIFY
2934 4435
2935/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ 4436/* 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) 4437# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2937 4438
2938static void noinline 4439ecb_noinline
4440static void
2939infy_add (EV_P_ ev_stat *w) 4441infy_add (EV_P_ ev_stat *w)
2940{ 4442{
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); 4443 w->wd = inotify_add_watch (fs_fd, w->path,
4444 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4445 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4446 | IN_DONT_FOLLOW | IN_MASK_ADD);
2942 4447
2943 if (w->wd >= 0) 4448 if (w->wd >= 0)
2944 { 4449 {
2945 struct statfs sfs; 4450 struct statfs sfs;
2946 4451
… …
2950 4455
2951 if (!fs_2625) 4456 if (!fs_2625)
2952 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4457 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2953 else if (!statfs (w->path, &sfs) 4458 else if (!statfs (w->path, &sfs)
2954 && (sfs.f_type == 0x1373 /* devfs */ 4459 && (sfs.f_type == 0x1373 /* devfs */
4460 || sfs.f_type == 0x4006 /* fat */
4461 || sfs.f_type == 0x4d44 /* msdos */
2955 || sfs.f_type == 0xEF53 /* ext2/3 */ 4462 || sfs.f_type == 0xEF53 /* ext2/3 */
4463 || sfs.f_type == 0x72b6 /* jffs2 */
4464 || sfs.f_type == 0x858458f6 /* ramfs */
4465 || sfs.f_type == 0x5346544e /* ntfs */
2956 || sfs.f_type == 0x3153464a /* jfs */ 4466 || sfs.f_type == 0x3153464a /* jfs */
4467 || sfs.f_type == 0x9123683e /* btrfs */
2957 || sfs.f_type == 0x52654973 /* reiser3 */ 4468 || sfs.f_type == 0x52654973 /* reiser3 */
2958 || sfs.f_type == 0x01021994 /* tempfs */ 4469 || sfs.f_type == 0x01021994 /* tmpfs */
2959 || sfs.f_type == 0x58465342 /* xfs */)) 4470 || sfs.f_type == 0x58465342 /* xfs */))
2960 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4471 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
2961 else 4472 else
2962 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4473 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2963 } 4474 }
… …
2984 if (!pend || pend == path) 4495 if (!pend || pend == path)
2985 break; 4496 break;
2986 4497
2987 *pend = 0; 4498 *pend = 0;
2988 w->wd = inotify_add_watch (fs_fd, path, mask); 4499 w->wd = inotify_add_watch (fs_fd, path, mask);
2989 } 4500 }
2990 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 4501 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2991 } 4502 }
2992 } 4503 }
2993 4504
2994 if (w->wd >= 0) 4505 if (w->wd >= 0)
… …
2998 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4509 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2999 ev_timer_again (EV_A_ &w->timer); 4510 ev_timer_again (EV_A_ &w->timer);
3000 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4511 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3001} 4512}
3002 4513
3003static void noinline 4514ecb_noinline
4515static void
3004infy_del (EV_P_ ev_stat *w) 4516infy_del (EV_P_ ev_stat *w)
3005{ 4517{
3006 int slot; 4518 int slot;
3007 int wd = w->wd; 4519 int wd = w->wd;
3008 4520
… …
3015 4527
3016 /* remove this watcher, if others are watching it, they will rearm */ 4528 /* remove this watcher, if others are watching it, they will rearm */
3017 inotify_rm_watch (fs_fd, wd); 4529 inotify_rm_watch (fs_fd, wd);
3018} 4530}
3019 4531
3020static void noinline 4532ecb_noinline
4533static void
3021infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4534infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
3022{ 4535{
3023 if (slot < 0) 4536 if (slot < 0)
3024 /* overflow, need to check for all hash slots */ 4537 /* overflow, need to check for all hash slots */
3025 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4538 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
3061 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4574 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3062 ofs += sizeof (struct inotify_event) + ev->len; 4575 ofs += sizeof (struct inotify_event) + ev->len;
3063 } 4576 }
3064} 4577}
3065 4578
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 4579inline_size ecb_cold
4580void
3099ev_check_2625 (EV_P) 4581ev_check_2625 (EV_P)
3100{ 4582{
3101 /* kernels < 2.6.25 are borked 4583 /* kernels < 2.6.25 are borked
3102 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4584 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3103 */ 4585 */
… …
3108} 4590}
3109 4591
3110inline_size int 4592inline_size int
3111infy_newfd (void) 4593infy_newfd (void)
3112{ 4594{
3113#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4595#if defined IN_CLOEXEC && defined IN_NONBLOCK
3114 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4596 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3115 if (fd >= 0) 4597 if (fd >= 0)
3116 return fd; 4598 return fd;
3117#endif 4599#endif
3118 return inotify_init (); 4600 return inotify_init ();
… …
3193#else 4675#else
3194# define EV_LSTAT(p,b) lstat (p, b) 4676# define EV_LSTAT(p,b) lstat (p, b)
3195#endif 4677#endif
3196 4678
3197void 4679void
3198ev_stat_stat (EV_P_ ev_stat *w) 4680ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
3199{ 4681{
3200 if (lstat (w->path, &w->attr) < 0) 4682 if (lstat (w->path, &w->attr) < 0)
3201 w->attr.st_nlink = 0; 4683 w->attr.st_nlink = 0;
3202 else if (!w->attr.st_nlink) 4684 else if (!w->attr.st_nlink)
3203 w->attr.st_nlink = 1; 4685 w->attr.st_nlink = 1;
3204} 4686}
3205 4687
3206static void noinline 4688ecb_noinline
4689static void
3207stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4690stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3208{ 4691{
3209 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4692 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3210 4693
3211 ev_statdata prev = w->attr; 4694 ev_statdata prev = w->attr;
… …
3242 ev_feed_event (EV_A_ w, EV_STAT); 4725 ev_feed_event (EV_A_ w, EV_STAT);
3243 } 4726 }
3244} 4727}
3245 4728
3246void 4729void
3247ev_stat_start (EV_P_ ev_stat *w) 4730ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
3248{ 4731{
3249 if (expect_false (ev_is_active (w))) 4732 if (ecb_expect_false (ev_is_active (w)))
3250 return; 4733 return;
3251 4734
3252 ev_stat_stat (EV_A_ w); 4735 ev_stat_stat (EV_A_ w);
3253 4736
3254 if (w->interval < MIN_STAT_INTERVAL && w->interval) 4737 if (w->interval < MIN_STAT_INTERVAL && w->interval)
… …
3273 4756
3274 EV_FREQUENT_CHECK; 4757 EV_FREQUENT_CHECK;
3275} 4758}
3276 4759
3277void 4760void
3278ev_stat_stop (EV_P_ ev_stat *w) 4761ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
3279{ 4762{
3280 clear_pending (EV_A_ (W)w); 4763 clear_pending (EV_A_ (W)w);
3281 if (expect_false (!ev_is_active (w))) 4764 if (ecb_expect_false (!ev_is_active (w)))
3282 return; 4765 return;
3283 4766
3284 EV_FREQUENT_CHECK; 4767 EV_FREQUENT_CHECK;
3285 4768
3286#if EV_USE_INOTIFY 4769#if EV_USE_INOTIFY
… …
3299} 4782}
3300#endif 4783#endif
3301 4784
3302#if EV_IDLE_ENABLE 4785#if EV_IDLE_ENABLE
3303void 4786void
3304ev_idle_start (EV_P_ ev_idle *w) 4787ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
3305{ 4788{
3306 if (expect_false (ev_is_active (w))) 4789 if (ecb_expect_false (ev_is_active (w)))
3307 return; 4790 return;
3308 4791
3309 pri_adjust (EV_A_ (W)w); 4792 pri_adjust (EV_A_ (W)w);
3310 4793
3311 EV_FREQUENT_CHECK; 4794 EV_FREQUENT_CHECK;
… …
3314 int active = ++idlecnt [ABSPRI (w)]; 4797 int active = ++idlecnt [ABSPRI (w)];
3315 4798
3316 ++idleall; 4799 ++idleall;
3317 ev_start (EV_A_ (W)w, active); 4800 ev_start (EV_A_ (W)w, active);
3318 4801
3319 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 4802 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
3320 idles [ABSPRI (w)][active - 1] = w; 4803 idles [ABSPRI (w)][active - 1] = w;
3321 } 4804 }
3322 4805
3323 EV_FREQUENT_CHECK; 4806 EV_FREQUENT_CHECK;
3324} 4807}
3325 4808
3326void 4809void
3327ev_idle_stop (EV_P_ ev_idle *w) 4810ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
3328{ 4811{
3329 clear_pending (EV_A_ (W)w); 4812 clear_pending (EV_A_ (W)w);
3330 if (expect_false (!ev_is_active (w))) 4813 if (ecb_expect_false (!ev_is_active (w)))
3331 return; 4814 return;
3332 4815
3333 EV_FREQUENT_CHECK; 4816 EV_FREQUENT_CHECK;
3334 4817
3335 { 4818 {
… …
3346} 4829}
3347#endif 4830#endif
3348 4831
3349#if EV_PREPARE_ENABLE 4832#if EV_PREPARE_ENABLE
3350void 4833void
3351ev_prepare_start (EV_P_ ev_prepare *w) 4834ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
3352{ 4835{
3353 if (expect_false (ev_is_active (w))) 4836 if (ecb_expect_false (ev_is_active (w)))
3354 return; 4837 return;
3355 4838
3356 EV_FREQUENT_CHECK; 4839 EV_FREQUENT_CHECK;
3357 4840
3358 ev_start (EV_A_ (W)w, ++preparecnt); 4841 ev_start (EV_A_ (W)w, ++preparecnt);
3359 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4842 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
3360 prepares [preparecnt - 1] = w; 4843 prepares [preparecnt - 1] = w;
3361 4844
3362 EV_FREQUENT_CHECK; 4845 EV_FREQUENT_CHECK;
3363} 4846}
3364 4847
3365void 4848void
3366ev_prepare_stop (EV_P_ ev_prepare *w) 4849ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
3367{ 4850{
3368 clear_pending (EV_A_ (W)w); 4851 clear_pending (EV_A_ (W)w);
3369 if (expect_false (!ev_is_active (w))) 4852 if (ecb_expect_false (!ev_is_active (w)))
3370 return; 4853 return;
3371 4854
3372 EV_FREQUENT_CHECK; 4855 EV_FREQUENT_CHECK;
3373 4856
3374 { 4857 {
… …
3384} 4867}
3385#endif 4868#endif
3386 4869
3387#if EV_CHECK_ENABLE 4870#if EV_CHECK_ENABLE
3388void 4871void
3389ev_check_start (EV_P_ ev_check *w) 4872ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
3390{ 4873{
3391 if (expect_false (ev_is_active (w))) 4874 if (ecb_expect_false (ev_is_active (w)))
3392 return; 4875 return;
3393 4876
3394 EV_FREQUENT_CHECK; 4877 EV_FREQUENT_CHECK;
3395 4878
3396 ev_start (EV_A_ (W)w, ++checkcnt); 4879 ev_start (EV_A_ (W)w, ++checkcnt);
3397 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 4880 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
3398 checks [checkcnt - 1] = w; 4881 checks [checkcnt - 1] = w;
3399 4882
3400 EV_FREQUENT_CHECK; 4883 EV_FREQUENT_CHECK;
3401} 4884}
3402 4885
3403void 4886void
3404ev_check_stop (EV_P_ ev_check *w) 4887ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
3405{ 4888{
3406 clear_pending (EV_A_ (W)w); 4889 clear_pending (EV_A_ (W)w);
3407 if (expect_false (!ev_is_active (w))) 4890 if (ecb_expect_false (!ev_is_active (w)))
3408 return; 4891 return;
3409 4892
3410 EV_FREQUENT_CHECK; 4893 EV_FREQUENT_CHECK;
3411 4894
3412 { 4895 {
… …
3421 EV_FREQUENT_CHECK; 4904 EV_FREQUENT_CHECK;
3422} 4905}
3423#endif 4906#endif
3424 4907
3425#if EV_EMBED_ENABLE 4908#if EV_EMBED_ENABLE
3426void noinline 4909ecb_noinline
4910void
3427ev_embed_sweep (EV_P_ ev_embed *w) 4911ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
3428{ 4912{
3429 ev_loop (w->other, EVLOOP_NONBLOCK); 4913 ev_run (w->other, EVRUN_NOWAIT);
3430} 4914}
3431 4915
3432static void 4916static void
3433embed_io_cb (EV_P_ ev_io *io, int revents) 4917embed_io_cb (EV_P_ ev_io *io, int revents)
3434{ 4918{
3435 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4919 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3436 4920
3437 if (ev_cb (w)) 4921 if (ev_cb (w))
3438 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4922 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3439 else 4923 else
3440 ev_loop (w->other, EVLOOP_NONBLOCK); 4924 ev_run (w->other, EVRUN_NOWAIT);
3441} 4925}
3442 4926
3443static void 4927static void
3444embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4928embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3445{ 4929{
… …
3449 EV_P = w->other; 4933 EV_P = w->other;
3450 4934
3451 while (fdchangecnt) 4935 while (fdchangecnt)
3452 { 4936 {
3453 fd_reify (EV_A); 4937 fd_reify (EV_A);
3454 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4938 ev_run (EV_A_ EVRUN_NOWAIT);
3455 } 4939 }
3456 } 4940 }
3457} 4941}
3458 4942
3459static void 4943static void
… …
3465 4949
3466 { 4950 {
3467 EV_P = w->other; 4951 EV_P = w->other;
3468 4952
3469 ev_loop_fork (EV_A); 4953 ev_loop_fork (EV_A);
3470 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4954 ev_run (EV_A_ EVRUN_NOWAIT);
3471 } 4955 }
3472 4956
3473 ev_embed_start (EV_A_ w); 4957 ev_embed_start (EV_A_ w);
3474} 4958}
3475 4959
… …
3480 ev_idle_stop (EV_A_ idle); 4964 ev_idle_stop (EV_A_ idle);
3481} 4965}
3482#endif 4966#endif
3483 4967
3484void 4968void
3485ev_embed_start (EV_P_ ev_embed *w) 4969ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
3486{ 4970{
3487 if (expect_false (ev_is_active (w))) 4971 if (ecb_expect_false (ev_is_active (w)))
3488 return; 4972 return;
3489 4973
3490 { 4974 {
3491 EV_P = w->other; 4975 EV_P = w->other;
3492 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4976 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
… …
3511 4995
3512 EV_FREQUENT_CHECK; 4996 EV_FREQUENT_CHECK;
3513} 4997}
3514 4998
3515void 4999void
3516ev_embed_stop (EV_P_ ev_embed *w) 5000ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
3517{ 5001{
3518 clear_pending (EV_A_ (W)w); 5002 clear_pending (EV_A_ (W)w);
3519 if (expect_false (!ev_is_active (w))) 5003 if (ecb_expect_false (!ev_is_active (w)))
3520 return; 5004 return;
3521 5005
3522 EV_FREQUENT_CHECK; 5006 EV_FREQUENT_CHECK;
3523 5007
3524 ev_io_stop (EV_A_ &w->io); 5008 ev_io_stop (EV_A_ &w->io);
… …
3531} 5015}
3532#endif 5016#endif
3533 5017
3534#if EV_FORK_ENABLE 5018#if EV_FORK_ENABLE
3535void 5019void
3536ev_fork_start (EV_P_ ev_fork *w) 5020ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
3537{ 5021{
3538 if (expect_false (ev_is_active (w))) 5022 if (ecb_expect_false (ev_is_active (w)))
3539 return; 5023 return;
3540 5024
3541 EV_FREQUENT_CHECK; 5025 EV_FREQUENT_CHECK;
3542 5026
3543 ev_start (EV_A_ (W)w, ++forkcnt); 5027 ev_start (EV_A_ (W)w, ++forkcnt);
3544 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 5028 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
3545 forks [forkcnt - 1] = w; 5029 forks [forkcnt - 1] = w;
3546 5030
3547 EV_FREQUENT_CHECK; 5031 EV_FREQUENT_CHECK;
3548} 5032}
3549 5033
3550void 5034void
3551ev_fork_stop (EV_P_ ev_fork *w) 5035ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
3552{ 5036{
3553 clear_pending (EV_A_ (W)w); 5037 clear_pending (EV_A_ (W)w);
3554 if (expect_false (!ev_is_active (w))) 5038 if (ecb_expect_false (!ev_is_active (w)))
3555 return; 5039 return;
3556 5040
3557 EV_FREQUENT_CHECK; 5041 EV_FREQUENT_CHECK;
3558 5042
3559 { 5043 {
… …
3567 5051
3568 EV_FREQUENT_CHECK; 5052 EV_FREQUENT_CHECK;
3569} 5053}
3570#endif 5054#endif
3571 5055
5056#if EV_CLEANUP_ENABLE
5057void
5058ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
5059{
5060 if (ecb_expect_false (ev_is_active (w)))
5061 return;
5062
5063 EV_FREQUENT_CHECK;
5064
5065 ev_start (EV_A_ (W)w, ++cleanupcnt);
5066 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
5067 cleanups [cleanupcnt - 1] = w;
5068
5069 /* cleanup watchers should never keep a refcount on the loop */
5070 ev_unref (EV_A);
5071 EV_FREQUENT_CHECK;
5072}
5073
5074void
5075ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
5076{
5077 clear_pending (EV_A_ (W)w);
5078 if (ecb_expect_false (!ev_is_active (w)))
5079 return;
5080
5081 EV_FREQUENT_CHECK;
5082 ev_ref (EV_A);
5083
5084 {
5085 int active = ev_active (w);
5086
5087 cleanups [active - 1] = cleanups [--cleanupcnt];
5088 ev_active (cleanups [active - 1]) = active;
5089 }
5090
5091 ev_stop (EV_A_ (W)w);
5092
5093 EV_FREQUENT_CHECK;
5094}
5095#endif
5096
3572#if EV_ASYNC_ENABLE 5097#if EV_ASYNC_ENABLE
3573void 5098void
3574ev_async_start (EV_P_ ev_async *w) 5099ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
3575{ 5100{
3576 if (expect_false (ev_is_active (w))) 5101 if (ecb_expect_false (ev_is_active (w)))
3577 return; 5102 return;
3578 5103
5104 w->sent = 0;
5105
3579 evpipe_init (EV_A); 5106 evpipe_init (EV_A);
3580 5107
3581 EV_FREQUENT_CHECK; 5108 EV_FREQUENT_CHECK;
3582 5109
3583 ev_start (EV_A_ (W)w, ++asynccnt); 5110 ev_start (EV_A_ (W)w, ++asynccnt);
3584 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 5111 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
3585 asyncs [asynccnt - 1] = w; 5112 asyncs [asynccnt - 1] = w;
3586 5113
3587 EV_FREQUENT_CHECK; 5114 EV_FREQUENT_CHECK;
3588} 5115}
3589 5116
3590void 5117void
3591ev_async_stop (EV_P_ ev_async *w) 5118ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
3592{ 5119{
3593 clear_pending (EV_A_ (W)w); 5120 clear_pending (EV_A_ (W)w);
3594 if (expect_false (!ev_is_active (w))) 5121 if (ecb_expect_false (!ev_is_active (w)))
3595 return; 5122 return;
3596 5123
3597 EV_FREQUENT_CHECK; 5124 EV_FREQUENT_CHECK;
3598 5125
3599 { 5126 {
… …
3607 5134
3608 EV_FREQUENT_CHECK; 5135 EV_FREQUENT_CHECK;
3609} 5136}
3610 5137
3611void 5138void
3612ev_async_send (EV_P_ ev_async *w) 5139ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
3613{ 5140{
3614 w->sent = 1; 5141 w->sent = 1;
3615 evpipe_write (EV_A_ &async_pending); 5142 evpipe_write (EV_A_ &async_pending);
3616} 5143}
3617#endif 5144#endif
… …
3654 5181
3655 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5182 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3656} 5183}
3657 5184
3658void 5185void
3659ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 5186ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
3660{ 5187{
3661 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5188 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 5189
3669 once->cb = cb; 5190 once->cb = cb;
3670 once->arg = arg; 5191 once->arg = arg;
3671 5192
3672 ev_init (&once->io, once_cb_io); 5193 ev_init (&once->io, once_cb_io);
… …
3685} 5206}
3686 5207
3687/*****************************************************************************/ 5208/*****************************************************************************/
3688 5209
3689#if EV_WALK_ENABLE 5210#if EV_WALK_ENABLE
5211ecb_cold
3690void 5212void
3691ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 5213ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
3692{ 5214{
3693 int i, j; 5215 int i, j;
3694 ev_watcher_list *wl, *wn; 5216 ev_watcher_list *wl, *wn;
3695 5217
3696 if (types & (EV_IO | EV_EMBED)) 5218 if (types & (EV_IO | EV_EMBED))
… …
3739 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 5261 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3740#endif 5262#endif
3741 5263
3742#if EV_IDLE_ENABLE 5264#if EV_IDLE_ENABLE
3743 if (types & EV_IDLE) 5265 if (types & EV_IDLE)
3744 for (j = NUMPRI; i--; ) 5266 for (j = NUMPRI; j--; )
3745 for (i = idlecnt [j]; i--; ) 5267 for (i = idlecnt [j]; i--; )
3746 cb (EV_A_ EV_IDLE, idles [j][i]); 5268 cb (EV_A_ EV_IDLE, idles [j][i]);
3747#endif 5269#endif
3748 5270
3749#if EV_FORK_ENABLE 5271#if EV_FORK_ENABLE
… …
3802 5324
3803#if EV_MULTIPLICITY 5325#if EV_MULTIPLICITY
3804 #include "ev_wrap.h" 5326 #include "ev_wrap.h"
3805#endif 5327#endif
3806 5328
3807#ifdef __cplusplus
3808}
3809#endif
3810

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