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Comparing libev/ev.c (file contents):
Revision 1.346 by root, Thu Oct 14 05:07:04 2010 UTC vs.
Revision 1.508 by root, Thu Jul 11 08:29:08 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/**/
455 524
456#if EV_VERIFY >= 3 525#if EV_VERIFY >= 3
457# define EV_FREQUENT_CHECK ev_verify (EV_A) 526# define EV_FREQUENT_CHECK ev_verify (EV_A)
458#else 527#else
459# define EV_FREQUENT_CHECK do { } while (0) 528# define EV_FREQUENT_CHECK do { } while (0)
460#endif 529#endif
461 530
462/* 531/*
463 * This is used to avoid floating point rounding problems. 532 * This is used to work around floating point rounding problems.
464 * It is added to ev_rt_now when scheduling periodics
465 * to ensure progress, time-wise, even when rounding
466 * errors are against us.
467 * This value is good at least till the year 4000. 533 * This value is good at least till the year 4000.
468 * Better solutions welcome.
469 */ 534 */
470#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 */
471 537
472#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) */
473#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) */
474 540
541/* find a portable timestamp that is "always" in the future but fits into time_t.
542 * this is quite hard, and we are mostly guessing - we handle 32 bit signed/unsigned time_t,
543 * and sizes larger than 32 bit, and maybe the unlikely floating point time_t */
544#define EV_TSTAMP_HUGE \
545 (sizeof (time_t) >= 8 ? 10000000000000. \
546 : 0 < (time_t)4294967295 ? 4294967295. \
547 : 2147483647.) \
548
549#define EV_TS_TO_MSEC(a) a * 1e3 + 0.9999
550#define EV_TS_FROM_USEC(us) us * 1e-6
551#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
552#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
553#define EV_TV_GET(tv) ((tv).tv_sec + (tv).tv_usec * 1e-6)
554#define EV_TS_GET(ts) ((ts).tv_sec + (ts).tv_nsec * 1e-9)
555
556/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
557/* ECB.H BEGIN */
558/*
559 * libecb - http://software.schmorp.de/pkg/libecb
560 *
561 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
562 * Copyright (©) 2011 Emanuele Giaquinta
563 * All rights reserved.
564 *
565 * Redistribution and use in source and binary forms, with or without modifica-
566 * tion, are permitted provided that the following conditions are met:
567 *
568 * 1. Redistributions of source code must retain the above copyright notice,
569 * this list of conditions and the following disclaimer.
570 *
571 * 2. Redistributions in binary form must reproduce the above copyright
572 * notice, this list of conditions and the following disclaimer in the
573 * documentation and/or other materials provided with the distribution.
574 *
575 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
576 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
577 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
578 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
579 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
580 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
581 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
582 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
583 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
584 * OF THE POSSIBILITY OF SUCH DAMAGE.
585 *
586 * Alternatively, the contents of this file may be used under the terms of
587 * the GNU General Public License ("GPL") version 2 or any later version,
588 * in which case the provisions of the GPL are applicable instead of
589 * the above. If you wish to allow the use of your version of this file
590 * only under the terms of the GPL and not to allow others to use your
591 * version of this file under the BSD license, indicate your decision
592 * by deleting the provisions above and replace them with the notice
593 * and other provisions required by the GPL. If you do not delete the
594 * provisions above, a recipient may use your version of this file under
595 * either the BSD or the GPL.
596 */
597
598#ifndef ECB_H
599#define ECB_H
600
601/* 16 bits major, 16 bits minor */
602#define ECB_VERSION 0x00010006
603
604#ifdef _WIN32
605 typedef signed char int8_t;
606 typedef unsigned char uint8_t;
607 typedef signed short int16_t;
608 typedef unsigned short uint16_t;
609 typedef signed int int32_t;
610 typedef unsigned int uint32_t;
475#if __GNUC__ >= 4 611 #if __GNUC__
476# define expect(expr,value) __builtin_expect ((expr),(value)) 612 typedef signed long long int64_t;
477# define noinline __attribute__ ((noinline)) 613 typedef unsigned long long uint64_t;
614 #else /* _MSC_VER || __BORLANDC__ */
615 typedef signed __int64 int64_t;
616 typedef unsigned __int64 uint64_t;
617 #endif
618 #ifdef _WIN64
619 #define ECB_PTRSIZE 8
620 typedef uint64_t uintptr_t;
621 typedef int64_t intptr_t;
622 #else
623 #define ECB_PTRSIZE 4
624 typedef uint32_t uintptr_t;
625 typedef int32_t intptr_t;
626 #endif
478#else 627#else
479# define expect(expr,value) (expr) 628 #include <inttypes.h>
480# define noinline 629 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
481# if __STDC_VERSION__ < 199901L && __GNUC__ < 2 630 #define ECB_PTRSIZE 8
482# define inline 631 #else
632 #define ECB_PTRSIZE 4
633 #endif
483# endif 634#endif
635
636#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
637#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
638
639/* work around x32 idiocy by defining proper macros */
640#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
641 #if _ILP32
642 #define ECB_AMD64_X32 1
643 #else
644 #define ECB_AMD64 1
484#endif 645 #endif
646#endif
485 647
648/* many compilers define _GNUC_ to some versions but then only implement
649 * what their idiot authors think are the "more important" extensions,
650 * causing enormous grief in return for some better fake benchmark numbers.
651 * or so.
652 * we try to detect these and simply assume they are not gcc - if they have
653 * an issue with that they should have done it right in the first place.
654 */
655#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
656 #define ECB_GCC_VERSION(major,minor) 0
657#else
658 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
659#endif
660
661#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
662
663#if __clang__ && defined __has_builtin
664 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
665#else
666 #define ECB_CLANG_BUILTIN(x) 0
667#endif
668
669#if __clang__ && defined __has_extension
670 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
671#else
672 #define ECB_CLANG_EXTENSION(x) 0
673#endif
674
675#define ECB_CPP (__cplusplus+0)
676#define ECB_CPP11 (__cplusplus >= 201103L)
677#define ECB_CPP14 (__cplusplus >= 201402L)
678#define ECB_CPP17 (__cplusplus >= 201703L)
679
680#if ECB_CPP
681 #define ECB_C 0
682 #define ECB_STDC_VERSION 0
683#else
684 #define ECB_C 1
685 #define ECB_STDC_VERSION __STDC_VERSION__
686#endif
687
688#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
689#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
690#define ECB_C17 (ECB_STDC_VERSION >= 201710L)
691
692#if ECB_CPP
693 #define ECB_EXTERN_C extern "C"
694 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
695 #define ECB_EXTERN_C_END }
696#else
697 #define ECB_EXTERN_C extern
698 #define ECB_EXTERN_C_BEG
699 #define ECB_EXTERN_C_END
700#endif
701
702/*****************************************************************************/
703
704/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
705/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
706
707#if ECB_NO_THREADS
708 #define ECB_NO_SMP 1
709#endif
710
711#if ECB_NO_SMP
712 #define ECB_MEMORY_FENCE do { } while (0)
713#endif
714
715/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
716#if __xlC__ && ECB_CPP
717 #include <builtins.h>
718#endif
719
720#if 1400 <= _MSC_VER
721 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
722#endif
723
724#ifndef ECB_MEMORY_FENCE
725 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
726 #define ECB_MEMORY_FENCE_RELAXED __asm__ __volatile__ ("" : : : "memory")
727 #if __i386 || __i386__
728 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
729 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
730 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
731 #elif ECB_GCC_AMD64
732 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
733 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
734 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
735 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
736 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
737 #elif defined __ARM_ARCH_2__ \
738 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
739 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
740 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
741 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
742 || defined __ARM_ARCH_5TEJ__
743 /* should not need any, unless running old code on newer cpu - arm doesn't support that */
744 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
745 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
746 || defined __ARM_ARCH_6T2__
747 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
748 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
749 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
750 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
751 #elif __aarch64__
752 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
753 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
754 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
755 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
756 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
757 #elif defined __s390__ || defined __s390x__
758 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
759 #elif defined __mips__
760 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
761 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
762 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
763 #elif defined __alpha__
764 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
765 #elif defined __hppa__
766 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
767 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
768 #elif defined __ia64__
769 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
770 #elif defined __m68k__
771 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
772 #elif defined __m88k__
773 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
774 #elif defined __sh__
775 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
776 #endif
777 #endif
778#endif
779
780#ifndef ECB_MEMORY_FENCE
781 #if ECB_GCC_VERSION(4,7)
782 /* see comment below (stdatomic.h) about the C11 memory model. */
783 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
784 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
785 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
786 #define ECB_MEMORY_FENCE_RELAXED __atomic_thread_fence (__ATOMIC_RELAXED)
787
788 #elif ECB_CLANG_EXTENSION(c_atomic)
789 /* see comment below (stdatomic.h) about the C11 memory model. */
790 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
791 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
792 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
793 #define ECB_MEMORY_FENCE_RELAXED __c11_atomic_thread_fence (__ATOMIC_RELAXED)
794
795 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
796 #define ECB_MEMORY_FENCE __sync_synchronize ()
797 #elif _MSC_VER >= 1500 /* VC++ 2008 */
798 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
799 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
800 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
801 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
802 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
803 #elif _MSC_VER >= 1400 /* VC++ 2005 */
804 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
805 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
806 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
807 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
808 #elif defined _WIN32
809 #include <WinNT.h>
810 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
811 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
812 #include <mbarrier.h>
813 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
814 #define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier ()
815 #define ECB_MEMORY_FENCE_RELEASE __machine_rel_barrier ()
816 #define ECB_MEMORY_FENCE_RELAXED __compiler_barrier ()
817 #elif __xlC__
818 #define ECB_MEMORY_FENCE __sync ()
819 #endif
820#endif
821
822#ifndef ECB_MEMORY_FENCE
823 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
824 /* we assume that these memory fences work on all variables/all memory accesses, */
825 /* not just C11 atomics and atomic accesses */
826 #include <stdatomic.h>
827 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
828 #define ECB_MEMORY_FENCE_ACQUIRE atomic_thread_fence (memory_order_acquire)
829 #define ECB_MEMORY_FENCE_RELEASE atomic_thread_fence (memory_order_release)
830 #endif
831#endif
832
833#ifndef ECB_MEMORY_FENCE
834 #if !ECB_AVOID_PTHREADS
835 /*
836 * if you get undefined symbol references to pthread_mutex_lock,
837 * or failure to find pthread.h, then you should implement
838 * the ECB_MEMORY_FENCE operations for your cpu/compiler
839 * OR provide pthread.h and link against the posix thread library
840 * of your system.
841 */
842 #include <pthread.h>
843 #define ECB_NEEDS_PTHREADS 1
844 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
845
846 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
847 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
848 #endif
849#endif
850
851#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
852 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
853#endif
854
855#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
856 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
857#endif
858
859#if !defined ECB_MEMORY_FENCE_RELAXED && defined ECB_MEMORY_FENCE
860 #define ECB_MEMORY_FENCE_RELAXED ECB_MEMORY_FENCE /* very heavy-handed */
861#endif
862
863/*****************************************************************************/
864
865#if ECB_CPP
866 #define ecb_inline static inline
867#elif ECB_GCC_VERSION(2,5)
868 #define ecb_inline static __inline__
869#elif ECB_C99
870 #define ecb_inline static inline
871#else
872 #define ecb_inline static
873#endif
874
875#if ECB_GCC_VERSION(3,3)
876 #define ecb_restrict __restrict__
877#elif ECB_C99
878 #define ecb_restrict restrict
879#else
880 #define ecb_restrict
881#endif
882
883typedef int ecb_bool;
884
885#define ECB_CONCAT_(a, b) a ## b
886#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
887#define ECB_STRINGIFY_(a) # a
888#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
889#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
890
891#define ecb_function_ ecb_inline
892
893#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
894 #define ecb_attribute(attrlist) __attribute__ (attrlist)
895#else
896 #define ecb_attribute(attrlist)
897#endif
898
899#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
900 #define ecb_is_constant(expr) __builtin_constant_p (expr)
901#else
902 /* possible C11 impl for integral types
903 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
904 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
905
906 #define ecb_is_constant(expr) 0
907#endif
908
909#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
910 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
911#else
912 #define ecb_expect(expr,value) (expr)
913#endif
914
915#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
916 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
917#else
918 #define ecb_prefetch(addr,rw,locality)
919#endif
920
921/* no emulation for ecb_decltype */
922#if ECB_CPP11
923 // older implementations might have problems with decltype(x)::type, work around it
924 template<class T> struct ecb_decltype_t { typedef T type; };
925 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
926#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
927 #define ecb_decltype(x) __typeof__ (x)
928#endif
929
930#if _MSC_VER >= 1300
931 #define ecb_deprecated __declspec (deprecated)
932#else
933 #define ecb_deprecated ecb_attribute ((__deprecated__))
934#endif
935
936#if _MSC_VER >= 1500
937 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
938#elif ECB_GCC_VERSION(4,5)
939 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
940#else
941 #define ecb_deprecated_message(msg) ecb_deprecated
942#endif
943
944#if _MSC_VER >= 1400
945 #define ecb_noinline __declspec (noinline)
946#else
947 #define ecb_noinline ecb_attribute ((__noinline__))
948#endif
949
950#define ecb_unused ecb_attribute ((__unused__))
951#define ecb_const ecb_attribute ((__const__))
952#define ecb_pure ecb_attribute ((__pure__))
953
954#if ECB_C11 || __IBMC_NORETURN
955 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
956 #define ecb_noreturn _Noreturn
957#elif ECB_CPP11
958 #define ecb_noreturn [[noreturn]]
959#elif _MSC_VER >= 1200
960 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
961 #define ecb_noreturn __declspec (noreturn)
962#else
963 #define ecb_noreturn ecb_attribute ((__noreturn__))
964#endif
965
966#if ECB_GCC_VERSION(4,3)
967 #define ecb_artificial ecb_attribute ((__artificial__))
968 #define ecb_hot ecb_attribute ((__hot__))
969 #define ecb_cold ecb_attribute ((__cold__))
970#else
971 #define ecb_artificial
972 #define ecb_hot
973 #define ecb_cold
974#endif
975
976/* put around conditional expressions if you are very sure that the */
977/* expression is mostly true or mostly false. note that these return */
978/* booleans, not the expression. */
486#define expect_false(expr) expect ((expr) != 0, 0) 979#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
487#define expect_true(expr) expect ((expr) != 0, 1) 980#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
981/* for compatibility to the rest of the world */
982#define ecb_likely(expr) ecb_expect_true (expr)
983#define ecb_unlikely(expr) ecb_expect_false (expr)
984
985/* count trailing zero bits and count # of one bits */
986#if ECB_GCC_VERSION(3,4) \
987 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
988 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
989 && ECB_CLANG_BUILTIN(__builtin_popcount))
990 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
991 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
992 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
993 #define ecb_ctz32(x) __builtin_ctz (x)
994 #define ecb_ctz64(x) __builtin_ctzll (x)
995 #define ecb_popcount32(x) __builtin_popcount (x)
996 /* no popcountll */
997#else
998 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
999 ecb_function_ ecb_const int
1000 ecb_ctz32 (uint32_t x)
1001 {
1002#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1003 unsigned long r;
1004 _BitScanForward (&r, x);
1005 return (int)r;
1006#else
1007 int r = 0;
1008
1009 x &= ~x + 1; /* this isolates the lowest bit */
1010
1011#if ECB_branchless_on_i386
1012 r += !!(x & 0xaaaaaaaa) << 0;
1013 r += !!(x & 0xcccccccc) << 1;
1014 r += !!(x & 0xf0f0f0f0) << 2;
1015 r += !!(x & 0xff00ff00) << 3;
1016 r += !!(x & 0xffff0000) << 4;
1017#else
1018 if (x & 0xaaaaaaaa) r += 1;
1019 if (x & 0xcccccccc) r += 2;
1020 if (x & 0xf0f0f0f0) r += 4;
1021 if (x & 0xff00ff00) r += 8;
1022 if (x & 0xffff0000) r += 16;
1023#endif
1024
1025 return r;
1026#endif
1027 }
1028
1029 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
1030 ecb_function_ ecb_const int
1031 ecb_ctz64 (uint64_t x)
1032 {
1033#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1034 unsigned long r;
1035 _BitScanForward64 (&r, x);
1036 return (int)r;
1037#else
1038 int shift = x & 0xffffffff ? 0 : 32;
1039 return ecb_ctz32 (x >> shift) + shift;
1040#endif
1041 }
1042
1043 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
1044 ecb_function_ ecb_const int
1045 ecb_popcount32 (uint32_t x)
1046 {
1047 x -= (x >> 1) & 0x55555555;
1048 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
1049 x = ((x >> 4) + x) & 0x0f0f0f0f;
1050 x *= 0x01010101;
1051
1052 return x >> 24;
1053 }
1054
1055 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
1056 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
1057 {
1058#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1059 unsigned long r;
1060 _BitScanReverse (&r, x);
1061 return (int)r;
1062#else
1063 int r = 0;
1064
1065 if (x >> 16) { x >>= 16; r += 16; }
1066 if (x >> 8) { x >>= 8; r += 8; }
1067 if (x >> 4) { x >>= 4; r += 4; }
1068 if (x >> 2) { x >>= 2; r += 2; }
1069 if (x >> 1) { r += 1; }
1070
1071 return r;
1072#endif
1073 }
1074
1075 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
1076 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
1077 {
1078#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1079 unsigned long r;
1080 _BitScanReverse64 (&r, x);
1081 return (int)r;
1082#else
1083 int r = 0;
1084
1085 if (x >> 32) { x >>= 32; r += 32; }
1086
1087 return r + ecb_ld32 (x);
1088#endif
1089 }
1090#endif
1091
1092ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
1093ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
1094ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
1095ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
1096
1097ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
1098ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
1099{
1100 return ( (x * 0x0802U & 0x22110U)
1101 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
1102}
1103
1104ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
1105ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
1106{
1107 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
1108 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
1109 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
1110 x = ( x >> 8 ) | ( x << 8);
1111
1112 return x;
1113}
1114
1115ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
1116ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
1117{
1118 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
1119 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
1120 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
1121 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
1122 x = ( x >> 16 ) | ( x << 16);
1123
1124 return x;
1125}
1126
1127/* popcount64 is only available on 64 bit cpus as gcc builtin */
1128/* so for this version we are lazy */
1129ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
1130ecb_function_ ecb_const int
1131ecb_popcount64 (uint64_t x)
1132{
1133 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
1134}
1135
1136ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
1137ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
1138ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
1139ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
1140ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
1141ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
1142ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
1143ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
1144
1145ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
1146ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
1147ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
1148ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
1149ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
1150ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
1151ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
1152ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
1153
1154#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1155 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1156 #define ecb_bswap16(x) __builtin_bswap16 (x)
1157 #else
1158 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1159 #endif
1160 #define ecb_bswap32(x) __builtin_bswap32 (x)
1161 #define ecb_bswap64(x) __builtin_bswap64 (x)
1162#elif _MSC_VER
1163 #include <stdlib.h>
1164 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1165 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1166 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
1167#else
1168 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
1169 ecb_function_ ecb_const uint16_t
1170 ecb_bswap16 (uint16_t x)
1171 {
1172 return ecb_rotl16 (x, 8);
1173 }
1174
1175 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
1176 ecb_function_ ecb_const uint32_t
1177 ecb_bswap32 (uint32_t x)
1178 {
1179 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
1180 }
1181
1182 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
1183 ecb_function_ ecb_const uint64_t
1184 ecb_bswap64 (uint64_t x)
1185 {
1186 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
1187 }
1188#endif
1189
1190#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
1191 #define ecb_unreachable() __builtin_unreachable ()
1192#else
1193 /* this seems to work fine, but gcc always emits a warning for it :/ */
1194 ecb_inline ecb_noreturn void ecb_unreachable (void);
1195 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
1196#endif
1197
1198/* try to tell the compiler that some condition is definitely true */
1199#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
1200
1201ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
1202ecb_inline ecb_const uint32_t
1203ecb_byteorder_helper (void)
1204{
1205 /* the union code still generates code under pressure in gcc, */
1206 /* but less than using pointers, and always seems to */
1207 /* successfully return a constant. */
1208 /* the reason why we have this horrible preprocessor mess */
1209 /* is to avoid it in all cases, at least on common architectures */
1210 /* or when using a recent enough gcc version (>= 4.6) */
1211#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1212 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1213 #define ECB_LITTLE_ENDIAN 1
1214 return 0x44332211;
1215#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1216 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1217 #define ECB_BIG_ENDIAN 1
1218 return 0x11223344;
1219#else
1220 union
1221 {
1222 uint8_t c[4];
1223 uint32_t u;
1224 } u = { 0x11, 0x22, 0x33, 0x44 };
1225 return u.u;
1226#endif
1227}
1228
1229ecb_inline ecb_const ecb_bool ecb_big_endian (void);
1230ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
1231ecb_inline ecb_const ecb_bool ecb_little_endian (void);
1232ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
1233
1234#if ECB_GCC_VERSION(3,0) || ECB_C99
1235 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1236#else
1237 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1238#endif
1239
1240#if ECB_CPP
1241 template<typename T>
1242 static inline T ecb_div_rd (T val, T div)
1243 {
1244 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1245 }
1246 template<typename T>
1247 static inline T ecb_div_ru (T val, T div)
1248 {
1249 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1250 }
1251#else
1252 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1253 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1254#endif
1255
1256#if ecb_cplusplus_does_not_suck
1257 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1258 template<typename T, int N>
1259 static inline int ecb_array_length (const T (&arr)[N])
1260 {
1261 return N;
1262 }
1263#else
1264 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1265#endif
1266
1267ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1268ecb_function_ ecb_const uint32_t
1269ecb_binary16_to_binary32 (uint32_t x)
1270{
1271 unsigned int s = (x & 0x8000) << (31 - 15);
1272 int e = (x >> 10) & 0x001f;
1273 unsigned int m = x & 0x03ff;
1274
1275 if (ecb_expect_false (e == 31))
1276 /* infinity or NaN */
1277 e = 255 - (127 - 15);
1278 else if (ecb_expect_false (!e))
1279 {
1280 if (ecb_expect_true (!m))
1281 /* zero, handled by code below by forcing e to 0 */
1282 e = 0 - (127 - 15);
1283 else
1284 {
1285 /* subnormal, renormalise */
1286 unsigned int s = 10 - ecb_ld32 (m);
1287
1288 m = (m << s) & 0x3ff; /* mask implicit bit */
1289 e -= s - 1;
1290 }
1291 }
1292
1293 /* e and m now are normalised, or zero, (or inf or nan) */
1294 e += 127 - 15;
1295
1296 return s | (e << 23) | (m << (23 - 10));
1297}
1298
1299ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1300ecb_function_ ecb_const uint16_t
1301ecb_binary32_to_binary16 (uint32_t x)
1302{
1303 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1304 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1305 unsigned int m = x & 0x007fffff;
1306
1307 x &= 0x7fffffff;
1308
1309 /* if it's within range of binary16 normals, use fast path */
1310 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1311 {
1312 /* mantissa round-to-even */
1313 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1314
1315 /* handle overflow */
1316 if (ecb_expect_false (m >= 0x00800000))
1317 {
1318 m >>= 1;
1319 e += 1;
1320 }
1321
1322 return s | (e << 10) | (m >> (23 - 10));
1323 }
1324
1325 /* handle large numbers and infinity */
1326 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1327 return s | 0x7c00;
1328
1329 /* handle zero, subnormals and small numbers */
1330 if (ecb_expect_true (x < 0x38800000))
1331 {
1332 /* zero */
1333 if (ecb_expect_true (!x))
1334 return s;
1335
1336 /* handle subnormals */
1337
1338 /* too small, will be zero */
1339 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1340 return s;
1341
1342 m |= 0x00800000; /* make implicit bit explicit */
1343
1344 /* very tricky - we need to round to the nearest e (+10) bit value */
1345 {
1346 unsigned int bits = 14 - e;
1347 unsigned int half = (1 << (bits - 1)) - 1;
1348 unsigned int even = (m >> bits) & 1;
1349
1350 /* if this overflows, we will end up with a normalised number */
1351 m = (m + half + even) >> bits;
1352 }
1353
1354 return s | m;
1355 }
1356
1357 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1358 m >>= 13;
1359
1360 return s | 0x7c00 | m | !m;
1361}
1362
1363/*******************************************************************************/
1364/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1365
1366/* basically, everything uses "ieee pure-endian" floating point numbers */
1367/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1368#if 0 \
1369 || __i386 || __i386__ \
1370 || ECB_GCC_AMD64 \
1371 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1372 || defined __s390__ || defined __s390x__ \
1373 || defined __mips__ \
1374 || defined __alpha__ \
1375 || defined __hppa__ \
1376 || defined __ia64__ \
1377 || defined __m68k__ \
1378 || defined __m88k__ \
1379 || defined __sh__ \
1380 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1381 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1382 || defined __aarch64__
1383 #define ECB_STDFP 1
1384 #include <string.h> /* for memcpy */
1385#else
1386 #define ECB_STDFP 0
1387#endif
1388
1389#ifndef ECB_NO_LIBM
1390
1391 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1392
1393 /* only the oldest of old doesn't have this one. solaris. */
1394 #ifdef INFINITY
1395 #define ECB_INFINITY INFINITY
1396 #else
1397 #define ECB_INFINITY HUGE_VAL
1398 #endif
1399
1400 #ifdef NAN
1401 #define ECB_NAN NAN
1402 #else
1403 #define ECB_NAN ECB_INFINITY
1404 #endif
1405
1406 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1407 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1408 #define ecb_frexpf(x,e) frexpf ((x), (e))
1409 #else
1410 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1411 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1412 #endif
1413
1414 /* convert a float to ieee single/binary32 */
1415 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1416 ecb_function_ ecb_const uint32_t
1417 ecb_float_to_binary32 (float x)
1418 {
1419 uint32_t r;
1420
1421 #if ECB_STDFP
1422 memcpy (&r, &x, 4);
1423 #else
1424 /* slow emulation, works for anything but -0 */
1425 uint32_t m;
1426 int e;
1427
1428 if (x == 0e0f ) return 0x00000000U;
1429 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1430 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1431 if (x != x ) return 0x7fbfffffU;
1432
1433 m = ecb_frexpf (x, &e) * 0x1000000U;
1434
1435 r = m & 0x80000000U;
1436
1437 if (r)
1438 m = -m;
1439
1440 if (e <= -126)
1441 {
1442 m &= 0xffffffU;
1443 m >>= (-125 - e);
1444 e = -126;
1445 }
1446
1447 r |= (e + 126) << 23;
1448 r |= m & 0x7fffffU;
1449 #endif
1450
1451 return r;
1452 }
1453
1454 /* converts an ieee single/binary32 to a float */
1455 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1456 ecb_function_ ecb_const float
1457 ecb_binary32_to_float (uint32_t x)
1458 {
1459 float r;
1460
1461 #if ECB_STDFP
1462 memcpy (&r, &x, 4);
1463 #else
1464 /* emulation, only works for normals and subnormals and +0 */
1465 int neg = x >> 31;
1466 int e = (x >> 23) & 0xffU;
1467
1468 x &= 0x7fffffU;
1469
1470 if (e)
1471 x |= 0x800000U;
1472 else
1473 e = 1;
1474
1475 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1476 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1477
1478 r = neg ? -r : r;
1479 #endif
1480
1481 return r;
1482 }
1483
1484 /* convert a double to ieee double/binary64 */
1485 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1486 ecb_function_ ecb_const uint64_t
1487 ecb_double_to_binary64 (double x)
1488 {
1489 uint64_t r;
1490
1491 #if ECB_STDFP
1492 memcpy (&r, &x, 8);
1493 #else
1494 /* slow emulation, works for anything but -0 */
1495 uint64_t m;
1496 int e;
1497
1498 if (x == 0e0 ) return 0x0000000000000000U;
1499 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1500 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1501 if (x != x ) return 0X7ff7ffffffffffffU;
1502
1503 m = frexp (x, &e) * 0x20000000000000U;
1504
1505 r = m & 0x8000000000000000;;
1506
1507 if (r)
1508 m = -m;
1509
1510 if (e <= -1022)
1511 {
1512 m &= 0x1fffffffffffffU;
1513 m >>= (-1021 - e);
1514 e = -1022;
1515 }
1516
1517 r |= ((uint64_t)(e + 1022)) << 52;
1518 r |= m & 0xfffffffffffffU;
1519 #endif
1520
1521 return r;
1522 }
1523
1524 /* converts an ieee double/binary64 to a double */
1525 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1526 ecb_function_ ecb_const double
1527 ecb_binary64_to_double (uint64_t x)
1528 {
1529 double r;
1530
1531 #if ECB_STDFP
1532 memcpy (&r, &x, 8);
1533 #else
1534 /* emulation, only works for normals and subnormals and +0 */
1535 int neg = x >> 63;
1536 int e = (x >> 52) & 0x7ffU;
1537
1538 x &= 0xfffffffffffffU;
1539
1540 if (e)
1541 x |= 0x10000000000000U;
1542 else
1543 e = 1;
1544
1545 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1546 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1547
1548 r = neg ? -r : r;
1549 #endif
1550
1551 return r;
1552 }
1553
1554 /* convert a float to ieee half/binary16 */
1555 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1556 ecb_function_ ecb_const uint16_t
1557 ecb_float_to_binary16 (float x)
1558 {
1559 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1560 }
1561
1562 /* convert an ieee half/binary16 to float */
1563 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1564 ecb_function_ ecb_const float
1565 ecb_binary16_to_float (uint16_t x)
1566 {
1567 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1568 }
1569
1570#endif
1571
1572#endif
1573
1574/* ECB.H END */
1575
1576#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1577/* if your architecture doesn't need memory fences, e.g. because it is
1578 * single-cpu/core, or if you use libev in a project that doesn't use libev
1579 * from multiple threads, then you can define ECB_NO_THREADS when compiling
1580 * libev, in which cases the memory fences become nops.
1581 * alternatively, you can remove this #error and link against libpthread,
1582 * which will then provide the memory fences.
1583 */
1584# error "memory fences not defined for your architecture, please report"
1585#endif
1586
1587#ifndef ECB_MEMORY_FENCE
1588# define ECB_MEMORY_FENCE do { } while (0)
1589# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1590# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1591#endif
1592
488#define inline_size static inline 1593#define inline_size ecb_inline
489 1594
490#if EV_FEATURE_CODE 1595#if EV_FEATURE_CODE
491# define inline_speed static inline 1596# define inline_speed ecb_inline
492#else 1597#else
493# define inline_speed static noinline 1598# define inline_speed ecb_noinline static
494#endif 1599#endif
1600
1601/*****************************************************************************/
1602/* raw syscall wrappers */
1603
1604#if EV_NEED_SYSCALL
1605
1606#include <sys/syscall.h>
1607
1608/*
1609 * define some syscall wrappers for common architectures
1610 * this is mostly for nice looks during debugging, not performance.
1611 * our syscalls return < 0, not == -1, on error. which is good
1612 * enough for linux aio.
1613 * TODO: arm is also common nowadays, maybe even mips and x86
1614 * TODO: after implementing this, it suddenly looks like overkill, but its hard to remove...
1615 */
1616#if __GNUC__ && __linux && ECB_AMD64 && !defined __OPTIMIZE_SIZE__
1617 /* the costly errno access probably kills this for size optimisation */
1618
1619 #define ev_syscall(nr,narg,arg1,arg2,arg3,arg4,arg5,arg6) \
1620 ({ \
1621 long res; \
1622 register unsigned long r6 __asm__ ("r9" ); \
1623 register unsigned long r5 __asm__ ("r8" ); \
1624 register unsigned long r4 __asm__ ("r10"); \
1625 register unsigned long r3 __asm__ ("rdx"); \
1626 register unsigned long r2 __asm__ ("rsi"); \
1627 register unsigned long r1 __asm__ ("rdi"); \
1628 if (narg >= 6) r6 = (unsigned long)(arg6); \
1629 if (narg >= 5) r5 = (unsigned long)(arg5); \
1630 if (narg >= 4) r4 = (unsigned long)(arg4); \
1631 if (narg >= 3) r3 = (unsigned long)(arg3); \
1632 if (narg >= 2) r2 = (unsigned long)(arg2); \
1633 if (narg >= 1) r1 = (unsigned long)(arg1); \
1634 __asm__ __volatile__ ( \
1635 "syscall\n\t" \
1636 : "=a" (res) \
1637 : "0" (nr), "r" (r1), "r" (r2), "r" (r3), "r" (r4), "r" (r5) \
1638 : "cc", "r11", "cx", "memory"); \
1639 errno = -res; \
1640 res; \
1641 })
1642
1643#endif
1644
1645#ifdef ev_syscall
1646 #define ev_syscall0(nr) ev_syscall (nr, 0, 0, 0, 0, 0, 0, 0)
1647 #define ev_syscall1(nr,arg1) ev_syscall (nr, 1, arg1, 0, 0, 0, 0, 0)
1648 #define ev_syscall2(nr,arg1,arg2) ev_syscall (nr, 2, arg1, arg2, 0, 0, 0, 0)
1649 #define ev_syscall3(nr,arg1,arg2,arg3) ev_syscall (nr, 3, arg1, arg2, arg3, 0, 0, 0)
1650 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) ev_syscall (nr, 3, arg1, arg2, arg3, arg4, 0, 0)
1651 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) ev_syscall (nr, 5, arg1, arg2, arg3, arg4, arg5, 0)
1652 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) ev_syscall (nr, 6, arg1, arg2, arg3, arg4, arg5,arg6)
1653#else
1654 #define ev_syscall0(nr) syscall (nr)
1655 #define ev_syscall1(nr,arg1) syscall (nr, arg1)
1656 #define ev_syscall2(nr,arg1,arg2) syscall (nr, arg1, arg2)
1657 #define ev_syscall3(nr,arg1,arg2,arg3) syscall (nr, arg1, arg2, arg3)
1658 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) syscall (nr, arg1, arg2, arg3, arg4)
1659 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) syscall (nr, arg1, arg2, arg3, arg4, arg5)
1660 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) syscall (nr, arg1, arg2, arg3, arg4, arg5,arg6)
1661#endif
1662
1663#endif
1664
1665/*****************************************************************************/
495 1666
496#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1667#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
497 1668
498#if EV_MINPRI == EV_MAXPRI 1669#if EV_MINPRI == EV_MAXPRI
499# define ABSPRI(w) (((W)w), 0) 1670# define ABSPRI(w) (((W)w), 0)
500#else 1671#else
501# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1672# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
502#endif 1673#endif
503 1674
504#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1675#define EMPTY /* required for microsofts broken pseudo-c compiler */
505#define EMPTY2(a,b) /* used to suppress some warnings */
506 1676
507typedef ev_watcher *W; 1677typedef ev_watcher *W;
508typedef ev_watcher_list *WL; 1678typedef ev_watcher_list *WL;
509typedef ev_watcher_time *WT; 1679typedef ev_watcher_time *WT;
510 1680
… …
535# include "ev_win32.c" 1705# include "ev_win32.c"
536#endif 1706#endif
537 1707
538/*****************************************************************************/ 1708/*****************************************************************************/
539 1709
1710#if EV_USE_LINUXAIO
1711# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
1712#endif
1713
1714/* define a suitable floor function (only used by periodics atm) */
1715
1716#if EV_USE_FLOOR
1717# include <math.h>
1718# define ev_floor(v) floor (v)
1719#else
1720
1721#include <float.h>
1722
1723/* a floor() replacement function, should be independent of ev_tstamp type */
1724ecb_noinline
1725static ev_tstamp
1726ev_floor (ev_tstamp v)
1727{
1728 /* the choice of shift factor is not terribly important */
1729#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1730 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1731#else
1732 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1733#endif
1734
1735 /* special treatment for negative arguments */
1736 if (ecb_expect_false (v < 0.))
1737 {
1738 ev_tstamp f = -ev_floor (-v);
1739
1740 return f - (f == v ? 0 : 1);
1741 }
1742
1743 /* argument too large for an unsigned long? then reduce it */
1744 if (ecb_expect_false (v >= shift))
1745 {
1746 ev_tstamp f;
1747
1748 if (v == v - 1.)
1749 return v; /* very large numbers are assumed to be integer */
1750
1751 f = shift * ev_floor (v * (1. / shift));
1752 return f + ev_floor (v - f);
1753 }
1754
1755 /* fits into an unsigned long */
1756 return (unsigned long)v;
1757}
1758
1759#endif
1760
1761/*****************************************************************************/
1762
1763#ifdef __linux
1764# include <sys/utsname.h>
1765#endif
1766
1767ecb_noinline ecb_cold
1768static unsigned int
1769ev_linux_version (void)
1770{
1771#ifdef __linux
1772 unsigned int v = 0;
1773 struct utsname buf;
1774 int i;
1775 char *p = buf.release;
1776
1777 if (uname (&buf))
1778 return 0;
1779
1780 for (i = 3+1; --i; )
1781 {
1782 unsigned int c = 0;
1783
1784 for (;;)
1785 {
1786 if (*p >= '0' && *p <= '9')
1787 c = c * 10 + *p++ - '0';
1788 else
1789 {
1790 p += *p == '.';
1791 break;
1792 }
1793 }
1794
1795 v = (v << 8) | c;
1796 }
1797
1798 return v;
1799#else
1800 return 0;
1801#endif
1802}
1803
1804/*****************************************************************************/
1805
540#if EV_AVOID_STDIO 1806#if EV_AVOID_STDIO
541static void noinline 1807ecb_noinline ecb_cold
1808static void
542ev_printerr (const char *msg) 1809ev_printerr (const char *msg)
543{ 1810{
544 write (STDERR_FILENO, msg, strlen (msg)); 1811 write (STDERR_FILENO, msg, strlen (msg));
545} 1812}
546#endif 1813#endif
547 1814
548static void (*syserr_cb)(const char *msg); 1815static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
549 1816
1817ecb_cold
550void 1818void
551ev_set_syserr_cb (void (*cb)(const char *msg)) 1819ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
552{ 1820{
553 syserr_cb = cb; 1821 syserr_cb = cb;
554} 1822}
555 1823
556static void noinline 1824ecb_noinline ecb_cold
1825static void
557ev_syserr (const char *msg) 1826ev_syserr (const char *msg)
558{ 1827{
559 if (!msg) 1828 if (!msg)
560 msg = "(libev) system error"; 1829 msg = "(libev) system error";
561 1830
562 if (syserr_cb) 1831 if (syserr_cb)
563 syserr_cb (msg); 1832 syserr_cb (msg);
564 else 1833 else
565 { 1834 {
566#if EV_AVOID_STDIO 1835#if EV_AVOID_STDIO
567 const char *err = strerror (errno);
568
569 ev_printerr (msg); 1836 ev_printerr (msg);
570 ev_printerr (": "); 1837 ev_printerr (": ");
571 ev_printerr (err); 1838 ev_printerr (strerror (errno));
572 ev_printerr ("\n"); 1839 ev_printerr ("\n");
573#else 1840#else
574 perror (msg); 1841 perror (msg);
575#endif 1842#endif
576 abort (); 1843 abort ();
577 } 1844 }
578} 1845}
579 1846
580static void * 1847static void *
581ev_realloc_emul (void *ptr, long size) 1848ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
582{ 1849{
583#if __GLIBC__
584 return realloc (ptr, size);
585#else
586 /* some systems, notably openbsd and darwin, fail to properly 1850 /* some systems, notably openbsd and darwin, fail to properly
587 * implement realloc (x, 0) (as required by both ansi c-89 and 1851 * implement realloc (x, 0) (as required by both ansi c-89 and
588 * the single unix specification, so work around them here. 1852 * the single unix specification, so work around them here.
1853 * recently, also (at least) fedora and debian started breaking it,
1854 * despite documenting it otherwise.
589 */ 1855 */
590 1856
591 if (size) 1857 if (size)
592 return realloc (ptr, size); 1858 return realloc (ptr, size);
593 1859
594 free (ptr); 1860 free (ptr);
595 return 0; 1861 return 0;
596#endif
597} 1862}
598 1863
599static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1864static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
600 1865
1866ecb_cold
601void 1867void
602ev_set_allocator (void *(*cb)(void *ptr, long size)) 1868ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
603{ 1869{
604 alloc = cb; 1870 alloc = cb;
605} 1871}
606 1872
607inline_speed void * 1873inline_speed void *
… …
610 ptr = alloc (ptr, size); 1876 ptr = alloc (ptr, size);
611 1877
612 if (!ptr && size) 1878 if (!ptr && size)
613 { 1879 {
614#if EV_AVOID_STDIO 1880#if EV_AVOID_STDIO
615 ev_printerr ("libev: memory allocation failed, aborting.\n"); 1881 ev_printerr ("(libev) memory allocation failed, aborting.\n");
616#else 1882#else
617 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1883 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
618#endif 1884#endif
619 abort (); 1885 abort ();
620 } 1886 }
621 1887
622 return ptr; 1888 return ptr;
… …
634typedef struct 1900typedef struct
635{ 1901{
636 WL head; 1902 WL head;
637 unsigned char events; /* the events watched for */ 1903 unsigned char events; /* the events watched for */
638 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */ 1904 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
639 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1905 unsigned char emask; /* some backends store the actual kernel mask in here */
640 unsigned char unused; 1906 unsigned char eflags; /* flags field for use by backends */
641#if EV_USE_EPOLL 1907#if EV_USE_EPOLL
642 unsigned int egen; /* generation counter to counter epoll bugs */ 1908 unsigned int egen; /* generation counter to counter epoll bugs */
643#endif 1909#endif
644#if EV_SELECT_IS_WINSOCKET 1910#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
645 SOCKET handle; 1911 SOCKET handle;
1912#endif
1913#if EV_USE_IOCP
1914 OVERLAPPED or, ow;
646#endif 1915#endif
647} ANFD; 1916} ANFD;
648 1917
649/* stores the pending event set for a given watcher */ 1918/* stores the pending event set for a given watcher */
650typedef struct 1919typedef struct
… …
692 #undef VAR 1961 #undef VAR
693 }; 1962 };
694 #include "ev_wrap.h" 1963 #include "ev_wrap.h"
695 1964
696 static struct ev_loop default_loop_struct; 1965 static struct ev_loop default_loop_struct;
697 struct ev_loop *ev_default_loop_ptr; 1966 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
698 1967
699#else 1968#else
700 1969
701 ev_tstamp ev_rt_now; 1970 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
702 #define VAR(name,decl) static decl; 1971 #define VAR(name,decl) static decl;
703 #include "ev_vars.h" 1972 #include "ev_vars.h"
704 #undef VAR 1973 #undef VAR
705 1974
706 static int ev_default_loop_ptr; 1975 static int ev_default_loop_ptr;
707 1976
708#endif 1977#endif
709 1978
710#if EV_FEATURE_API 1979#if EV_FEATURE_API
711# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 1980# define EV_RELEASE_CB if (ecb_expect_false (release_cb)) release_cb (EV_A)
712# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 1981# define EV_ACQUIRE_CB if (ecb_expect_false (acquire_cb)) acquire_cb (EV_A)
713# define EV_INVOKE_PENDING invoke_cb (EV_A) 1982# define EV_INVOKE_PENDING invoke_cb (EV_A)
714#else 1983#else
715# define EV_RELEASE_CB (void)0 1984# define EV_RELEASE_CB (void)0
716# define EV_ACQUIRE_CB (void)0 1985# define EV_ACQUIRE_CB (void)0
717# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1986# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
718#endif 1987#endif
719 1988
720#define EVUNLOOP_RECURSE 0x80 1989#define EVBREAK_RECURSE 0x80
721 1990
722/*****************************************************************************/ 1991/*****************************************************************************/
723 1992
724#ifndef EV_HAVE_EV_TIME 1993#ifndef EV_HAVE_EV_TIME
725ev_tstamp 1994ev_tstamp
726ev_time (void) 1995ev_time (void) EV_NOEXCEPT
727{ 1996{
728#if EV_USE_REALTIME 1997#if EV_USE_REALTIME
729 if (expect_true (have_realtime)) 1998 if (ecb_expect_true (have_realtime))
730 { 1999 {
731 struct timespec ts; 2000 struct timespec ts;
732 clock_gettime (CLOCK_REALTIME, &ts); 2001 clock_gettime (CLOCK_REALTIME, &ts);
733 return ts.tv_sec + ts.tv_nsec * 1e-9; 2002 return EV_TS_GET (ts);
734 } 2003 }
735#endif 2004#endif
736 2005
737 struct timeval tv; 2006 struct timeval tv;
738 gettimeofday (&tv, 0); 2007 gettimeofday (&tv, 0);
739 return tv.tv_sec + tv.tv_usec * 1e-6; 2008 return EV_TV_GET (tv);
740} 2009}
741#endif 2010#endif
742 2011
743inline_size ev_tstamp 2012inline_size ev_tstamp
744get_clock (void) 2013get_clock (void)
745{ 2014{
746#if EV_USE_MONOTONIC 2015#if EV_USE_MONOTONIC
747 if (expect_true (have_monotonic)) 2016 if (ecb_expect_true (have_monotonic))
748 { 2017 {
749 struct timespec ts; 2018 struct timespec ts;
750 clock_gettime (CLOCK_MONOTONIC, &ts); 2019 clock_gettime (CLOCK_MONOTONIC, &ts);
751 return ts.tv_sec + ts.tv_nsec * 1e-9; 2020 return EV_TS_GET (ts);
752 } 2021 }
753#endif 2022#endif
754 2023
755 return ev_time (); 2024 return ev_time ();
756} 2025}
757 2026
758#if EV_MULTIPLICITY 2027#if EV_MULTIPLICITY
759ev_tstamp 2028ev_tstamp
760ev_now (EV_P) 2029ev_now (EV_P) EV_NOEXCEPT
761{ 2030{
762 return ev_rt_now; 2031 return ev_rt_now;
763} 2032}
764#endif 2033#endif
765 2034
766void 2035void
767ev_sleep (ev_tstamp delay) 2036ev_sleep (ev_tstamp delay) EV_NOEXCEPT
768{ 2037{
769 if (delay > 0.) 2038 if (delay > 0.)
770 { 2039 {
771#if EV_USE_NANOSLEEP 2040#if EV_USE_NANOSLEEP
772 struct timespec ts; 2041 struct timespec ts;
773 2042
774 ts.tv_sec = (time_t)delay; 2043 EV_TS_SET (ts, delay);
775 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
776
777 nanosleep (&ts, 0); 2044 nanosleep (&ts, 0);
778#elif defined(_WIN32) 2045#elif defined _WIN32
2046 /* maybe this should round up, as ms is very low resolution */
2047 /* compared to select (µs) or nanosleep (ns) */
779 Sleep ((unsigned long)(delay * 1e3)); 2048 Sleep ((unsigned long)(EV_TS_TO_MSEC (delay)));
780#else 2049#else
781 struct timeval tv; 2050 struct timeval tv;
782
783 tv.tv_sec = (time_t)delay;
784 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
785 2051
786 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 2052 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
787 /* something not guaranteed by newer posix versions, but guaranteed */ 2053 /* something not guaranteed by newer posix versions, but guaranteed */
788 /* by older ones */ 2054 /* by older ones */
2055 EV_TV_SET (tv, delay);
789 select (0, 0, 0, 0, &tv); 2056 select (0, 0, 0, 0, &tv);
790#endif 2057#endif
791 } 2058 }
792} 2059}
793 2060
… …
804 2071
805 do 2072 do
806 ncur <<= 1; 2073 ncur <<= 1;
807 while (cnt > ncur); 2074 while (cnt > ncur);
808 2075
809 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 2076 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
810 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 2077 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
811 { 2078 {
812 ncur *= elem; 2079 ncur *= elem;
813 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 2080 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
814 ncur = ncur - sizeof (void *) * 4; 2081 ncur = ncur - sizeof (void *) * 4;
… …
816 } 2083 }
817 2084
818 return ncur; 2085 return ncur;
819} 2086}
820 2087
821static noinline void * 2088ecb_noinline ecb_cold
2089static void *
822array_realloc (int elem, void *base, int *cur, int cnt) 2090array_realloc (int elem, void *base, int *cur, int cnt)
823{ 2091{
824 *cur = array_nextsize (elem, *cur, cnt); 2092 *cur = array_nextsize (elem, *cur, cnt);
825 return ev_realloc (base, elem * *cur); 2093 return ev_realloc (base, elem * *cur);
826} 2094}
827 2095
2096#define array_needsize_noinit(base,offset,count)
2097
828#define array_init_zero(base,count) \ 2098#define array_needsize_zerofill(base,offset,count) \
829 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 2099 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
830 2100
831#define array_needsize(type,base,cur,cnt,init) \ 2101#define array_needsize(type,base,cur,cnt,init) \
832 if (expect_false ((cnt) > (cur))) \ 2102 if (ecb_expect_false ((cnt) > (cur))) \
833 { \ 2103 { \
834 int ocur_ = (cur); \ 2104 ecb_unused int ocur_ = (cur); \
835 (base) = (type *)array_realloc \ 2105 (base) = (type *)array_realloc \
836 (sizeof (type), (base), &(cur), (cnt)); \ 2106 (sizeof (type), (base), &(cur), (cnt)); \
837 init ((base) + (ocur_), (cur) - ocur_); \ 2107 init ((base), ocur_, ((cur) - ocur_)); \
838 } 2108 }
839 2109
840#if 0 2110#if 0
841#define array_slim(type,stem) \ 2111#define array_slim(type,stem) \
842 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2112 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
… …
851 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 2121 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
852 2122
853/*****************************************************************************/ 2123/*****************************************************************************/
854 2124
855/* dummy callback for pending events */ 2125/* dummy callback for pending events */
856static void noinline 2126ecb_noinline
2127static void
857pendingcb (EV_P_ ev_prepare *w, int revents) 2128pendingcb (EV_P_ ev_prepare *w, int revents)
858{ 2129{
859} 2130}
860 2131
861void noinline 2132ecb_noinline
2133void
862ev_feed_event (EV_P_ void *w, int revents) 2134ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
863{ 2135{
864 W w_ = (W)w; 2136 W w_ = (W)w;
865 int pri = ABSPRI (w_); 2137 int pri = ABSPRI (w_);
866 2138
867 if (expect_false (w_->pending)) 2139 if (ecb_expect_false (w_->pending))
868 pendings [pri][w_->pending - 1].events |= revents; 2140 pendings [pri][w_->pending - 1].events |= revents;
869 else 2141 else
870 { 2142 {
871 w_->pending = ++pendingcnt [pri]; 2143 w_->pending = ++pendingcnt [pri];
872 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2144 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
873 pendings [pri][w_->pending - 1].w = w_; 2145 pendings [pri][w_->pending - 1].w = w_;
874 pendings [pri][w_->pending - 1].events = revents; 2146 pendings [pri][w_->pending - 1].events = revents;
875 } 2147 }
2148
2149 pendingpri = NUMPRI - 1;
876} 2150}
877 2151
878inline_speed void 2152inline_speed void
879feed_reverse (EV_P_ W w) 2153feed_reverse (EV_P_ W w)
880{ 2154{
881 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2155 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
882 rfeeds [rfeedcnt++] = w; 2156 rfeeds [rfeedcnt++] = w;
883} 2157}
884 2158
885inline_size void 2159inline_size void
886feed_reverse_done (EV_P_ int revents) 2160feed_reverse_done (EV_P_ int revents)
… …
921inline_speed void 2195inline_speed void
922fd_event (EV_P_ int fd, int revents) 2196fd_event (EV_P_ int fd, int revents)
923{ 2197{
924 ANFD *anfd = anfds + fd; 2198 ANFD *anfd = anfds + fd;
925 2199
926 if (expect_true (!anfd->reify)) 2200 if (ecb_expect_true (!anfd->reify))
927 fd_event_nocheck (EV_A_ fd, revents); 2201 fd_event_nocheck (EV_A_ fd, revents);
928} 2202}
929 2203
930void 2204void
931ev_feed_fd_event (EV_P_ int fd, int revents) 2205ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
932{ 2206{
933 if (fd >= 0 && fd < anfdmax) 2207 if (fd >= 0 && fd < anfdmax)
934 fd_event_nocheck (EV_A_ fd, revents); 2208 fd_event_nocheck (EV_A_ fd, revents);
935} 2209}
936 2210
… …
939inline_size void 2213inline_size void
940fd_reify (EV_P) 2214fd_reify (EV_P)
941{ 2215{
942 int i; 2216 int i;
943 2217
2218#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
2219 for (i = 0; i < fdchangecnt; ++i)
2220 {
2221 int fd = fdchanges [i];
2222 ANFD *anfd = anfds + fd;
2223
2224 if (anfd->reify & EV__IOFDSET && anfd->head)
2225 {
2226 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
2227
2228 if (handle != anfd->handle)
2229 {
2230 unsigned long arg;
2231
2232 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
2233
2234 /* handle changed, but fd didn't - we need to do it in two steps */
2235 backend_modify (EV_A_ fd, anfd->events, 0);
2236 anfd->events = 0;
2237 anfd->handle = handle;
2238 }
2239 }
2240 }
2241#endif
2242
944 for (i = 0; i < fdchangecnt; ++i) 2243 for (i = 0; i < fdchangecnt; ++i)
945 { 2244 {
946 int fd = fdchanges [i]; 2245 int fd = fdchanges [i];
947 ANFD *anfd = anfds + fd; 2246 ANFD *anfd = anfds + fd;
948 ev_io *w; 2247 ev_io *w;
949 2248
950 unsigned char events = 0; 2249 unsigned char o_events = anfd->events;
2250 unsigned char o_reify = anfd->reify;
951 2251
952 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2252 anfd->reify = 0;
953 events |= (unsigned char)w->events;
954 2253
955#if EV_SELECT_IS_WINSOCKET 2254 /*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
956 if (events)
957 { 2255 {
958 unsigned long arg; 2256 anfd->events = 0;
959 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 2257
960 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 2258 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
2259 anfd->events |= (unsigned char)w->events;
2260
2261 if (o_events != anfd->events)
2262 o_reify = EV__IOFDSET; /* actually |= */
961 } 2263 }
962#endif
963 2264
964 { 2265 if (o_reify & EV__IOFDSET)
965 unsigned char o_events = anfd->events;
966 unsigned char o_reify = anfd->reify;
967
968 anfd->reify = 0;
969 anfd->events = events;
970
971 if (o_events != events || o_reify & EV__IOFDSET)
972 backend_modify (EV_A_ fd, o_events, events); 2266 backend_modify (EV_A_ fd, o_events, anfd->events);
973 }
974 } 2267 }
975 2268
976 fdchangecnt = 0; 2269 fdchangecnt = 0;
977} 2270}
978 2271
979/* something about the given fd changed */ 2272/* something about the given fd changed */
980inline_size void 2273inline_size
2274void
981fd_change (EV_P_ int fd, int flags) 2275fd_change (EV_P_ int fd, int flags)
982{ 2276{
983 unsigned char reify = anfds [fd].reify; 2277 unsigned char reify = anfds [fd].reify;
984 anfds [fd].reify |= flags; 2278 anfds [fd].reify |= flags;
985 2279
986 if (expect_true (!reify)) 2280 if (ecb_expect_true (!reify))
987 { 2281 {
988 ++fdchangecnt; 2282 ++fdchangecnt;
989 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2283 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
990 fdchanges [fdchangecnt - 1] = fd; 2284 fdchanges [fdchangecnt - 1] = fd;
991 } 2285 }
992} 2286}
993 2287
994/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2288/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
995inline_speed void 2289inline_speed ecb_cold void
996fd_kill (EV_P_ int fd) 2290fd_kill (EV_P_ int fd)
997{ 2291{
998 ev_io *w; 2292 ev_io *w;
999 2293
1000 while ((w = (ev_io *)anfds [fd].head)) 2294 while ((w = (ev_io *)anfds [fd].head))
… …
1003 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2297 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1004 } 2298 }
1005} 2299}
1006 2300
1007/* check whether the given fd is actually valid, for error recovery */ 2301/* check whether the given fd is actually valid, for error recovery */
1008inline_size int 2302inline_size ecb_cold int
1009fd_valid (int fd) 2303fd_valid (int fd)
1010{ 2304{
1011#ifdef _WIN32 2305#ifdef _WIN32
1012 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2306 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1013#else 2307#else
1014 return fcntl (fd, F_GETFD) != -1; 2308 return fcntl (fd, F_GETFD) != -1;
1015#endif 2309#endif
1016} 2310}
1017 2311
1018/* called on EBADF to verify fds */ 2312/* called on EBADF to verify fds */
1019static void noinline 2313ecb_noinline ecb_cold
2314static void
1020fd_ebadf (EV_P) 2315fd_ebadf (EV_P)
1021{ 2316{
1022 int fd; 2317 int fd;
1023 2318
1024 for (fd = 0; fd < anfdmax; ++fd) 2319 for (fd = 0; fd < anfdmax; ++fd)
… …
1026 if (!fd_valid (fd) && errno == EBADF) 2321 if (!fd_valid (fd) && errno == EBADF)
1027 fd_kill (EV_A_ fd); 2322 fd_kill (EV_A_ fd);
1028} 2323}
1029 2324
1030/* called on ENOMEM in select/poll to kill some fds and retry */ 2325/* called on ENOMEM in select/poll to kill some fds and retry */
1031static void noinline 2326ecb_noinline ecb_cold
2327static void
1032fd_enomem (EV_P) 2328fd_enomem (EV_P)
1033{ 2329{
1034 int fd; 2330 int fd;
1035 2331
1036 for (fd = anfdmax; fd--; ) 2332 for (fd = anfdmax; fd--; )
… …
1040 break; 2336 break;
1041 } 2337 }
1042} 2338}
1043 2339
1044/* usually called after fork if backend needs to re-arm all fds from scratch */ 2340/* usually called after fork if backend needs to re-arm all fds from scratch */
1045static void noinline 2341ecb_noinline
2342static void
1046fd_rearm_all (EV_P) 2343fd_rearm_all (EV_P)
1047{ 2344{
1048 int fd; 2345 int fd;
1049 2346
1050 for (fd = 0; fd < anfdmax; ++fd) 2347 for (fd = 0; fd < anfdmax; ++fd)
… …
1103 ev_tstamp minat; 2400 ev_tstamp minat;
1104 ANHE *minpos; 2401 ANHE *minpos;
1105 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; 2402 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
1106 2403
1107 /* find minimum child */ 2404 /* find minimum child */
1108 if (expect_true (pos + DHEAP - 1 < E)) 2405 if (ecb_expect_true (pos + DHEAP - 1 < E))
1109 { 2406 {
1110 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2407 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1111 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2408 if ( minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1112 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2409 if ( minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1113 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2410 if ( minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1114 } 2411 }
1115 else if (pos < E) 2412 else if (pos < E)
1116 { 2413 {
1117 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2414 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1118 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2415 if (pos + 1 < E && minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1119 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2416 if (pos + 2 < E && minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1120 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2417 if (pos + 3 < E && minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1121 } 2418 }
1122 else 2419 else
1123 break; 2420 break;
1124 2421
1125 if (ANHE_at (he) <= minat) 2422 if (ANHE_at (he) <= minat)
… …
1133 2430
1134 heap [k] = he; 2431 heap [k] = he;
1135 ev_active (ANHE_w (he)) = k; 2432 ev_active (ANHE_w (he)) = k;
1136} 2433}
1137 2434
1138#else /* 4HEAP */ 2435#else /* not 4HEAP */
1139 2436
1140#define HEAP0 1 2437#define HEAP0 1
1141#define HPARENT(k) ((k) >> 1) 2438#define HPARENT(k) ((k) >> 1)
1142#define UPHEAP_DONE(p,k) (!(p)) 2439#define UPHEAP_DONE(p,k) (!(p))
1143 2440
… …
1231 2528
1232/*****************************************************************************/ 2529/*****************************************************************************/
1233 2530
1234#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2531#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1235 2532
1236static void noinline 2533ecb_noinline ecb_cold
2534static void
1237evpipe_init (EV_P) 2535evpipe_init (EV_P)
1238{ 2536{
1239 if (!ev_is_active (&pipe_w)) 2537 if (!ev_is_active (&pipe_w))
1240 { 2538 {
2539 int fds [2];
2540
1241# if EV_USE_EVENTFD 2541# if EV_USE_EVENTFD
2542 fds [0] = -1;
1242 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2543 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1243 if (evfd < 0 && errno == EINVAL) 2544 if (fds [1] < 0 && errno == EINVAL)
1244 evfd = eventfd (0, 0); 2545 fds [1] = eventfd (0, 0);
1245 2546
1246 if (evfd >= 0) 2547 if (fds [1] < 0)
2548# endif
1247 { 2549 {
2550 while (pipe (fds))
2551 ev_syserr ("(libev) error creating signal/async pipe");
2552
2553 fd_intern (fds [0]);
2554 }
2555
1248 evpipe [0] = -1; 2556 evpipe [0] = fds [0];
1249 fd_intern (evfd); /* doing it twice doesn't hurt */ 2557
1250 ev_io_set (&pipe_w, evfd, EV_READ); 2558 if (evpipe [1] < 0)
2559 evpipe [1] = fds [1]; /* first call, set write fd */
2560 else
2561 {
2562 /* on subsequent calls, do not change evpipe [1] */
2563 /* so that evpipe_write can always rely on its value. */
2564 /* this branch does not do anything sensible on windows, */
2565 /* so must not be executed on windows */
2566
2567 dup2 (fds [1], evpipe [1]);
2568 close (fds [1]);
2569 }
2570
2571 fd_intern (evpipe [1]);
2572
2573 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2574 ev_io_start (EV_A_ &pipe_w);
2575 ev_unref (EV_A); /* watcher should not keep loop alive */
2576 }
2577}
2578
2579inline_speed void
2580evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2581{
2582 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2583
2584 if (ecb_expect_true (*flag))
2585 return;
2586
2587 *flag = 1;
2588 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2589
2590 pipe_write_skipped = 1;
2591
2592 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2593
2594 if (pipe_write_wanted)
2595 {
2596 int old_errno;
2597
2598 pipe_write_skipped = 0;
2599 ECB_MEMORY_FENCE_RELEASE;
2600
2601 old_errno = errno; /* save errno because write will clobber it */
2602
2603#if EV_USE_EVENTFD
2604 if (evpipe [0] < 0)
2605 {
2606 uint64_t counter = 1;
2607 write (evpipe [1], &counter, sizeof (uint64_t));
1251 } 2608 }
1252 else 2609 else
1253# endif 2610#endif
1254 { 2611 {
1255 while (pipe (evpipe)) 2612#ifdef _WIN32
1256 ev_syserr ("(libev) error creating signal/async pipe"); 2613 WSABUF buf;
1257 2614 DWORD sent;
1258 fd_intern (evpipe [0]); 2615 buf.buf = (char *)&buf;
1259 fd_intern (evpipe [1]); 2616 buf.len = 1;
1260 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2617 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2618#else
2619 write (evpipe [1], &(evpipe [1]), 1);
2620#endif
1261 } 2621 }
1262
1263 ev_io_start (EV_A_ &pipe_w);
1264 ev_unref (EV_A); /* watcher should not keep loop alive */
1265 }
1266}
1267
1268inline_size void
1269evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1270{
1271 if (!*flag)
1272 {
1273 int old_errno = errno; /* save errno because write might clobber it */
1274 char dummy;
1275
1276 *flag = 1;
1277
1278#if EV_USE_EVENTFD
1279 if (evfd >= 0)
1280 {
1281 uint64_t counter = 1;
1282 write (evfd, &counter, sizeof (uint64_t));
1283 }
1284 else
1285#endif
1286 /* win32 people keep sending patches that change this write() to send() */
1287 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1288 /* so when you think this write should be a send instead, please find out */
1289 /* where your send() is from - it's definitely not the microsoft send, and */
1290 /* tell me. thank you. */
1291 write (evpipe [1], &dummy, 1);
1292 2622
1293 errno = old_errno; 2623 errno = old_errno;
1294 } 2624 }
1295} 2625}
1296 2626
… …
1299static void 2629static void
1300pipecb (EV_P_ ev_io *iow, int revents) 2630pipecb (EV_P_ ev_io *iow, int revents)
1301{ 2631{
1302 int i; 2632 int i;
1303 2633
2634 if (revents & EV_READ)
2635 {
1304#if EV_USE_EVENTFD 2636#if EV_USE_EVENTFD
1305 if (evfd >= 0) 2637 if (evpipe [0] < 0)
1306 { 2638 {
1307 uint64_t counter; 2639 uint64_t counter;
1308 read (evfd, &counter, sizeof (uint64_t)); 2640 read (evpipe [1], &counter, sizeof (uint64_t));
1309 } 2641 }
1310 else 2642 else
1311#endif 2643#endif
1312 { 2644 {
1313 char dummy; 2645 char dummy[4];
1314 /* see discussion in evpipe_write when you think this read should be recv in win32 */ 2646#ifdef _WIN32
2647 WSABUF buf;
2648 DWORD recvd;
2649 DWORD flags = 0;
2650 buf.buf = dummy;
2651 buf.len = sizeof (dummy);
2652 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2653#else
1315 read (evpipe [0], &dummy, 1); 2654 read (evpipe [0], &dummy, sizeof (dummy));
2655#endif
2656 }
1316 } 2657 }
1317 2658
2659 pipe_write_skipped = 0;
2660
2661 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2662
2663#if EV_SIGNAL_ENABLE
1318 if (sig_pending) 2664 if (sig_pending)
1319 { 2665 {
1320 sig_pending = 0; 2666 sig_pending = 0;
1321 2667
2668 ECB_MEMORY_FENCE;
2669
1322 for (i = EV_NSIG - 1; i--; ) 2670 for (i = EV_NSIG - 1; i--; )
1323 if (expect_false (signals [i].pending)) 2671 if (ecb_expect_false (signals [i].pending))
1324 ev_feed_signal_event (EV_A_ i + 1); 2672 ev_feed_signal_event (EV_A_ i + 1);
1325 } 2673 }
2674#endif
1326 2675
1327#if EV_ASYNC_ENABLE 2676#if EV_ASYNC_ENABLE
1328 if (async_pending) 2677 if (async_pending)
1329 { 2678 {
1330 async_pending = 0; 2679 async_pending = 0;
2680
2681 ECB_MEMORY_FENCE;
1331 2682
1332 for (i = asynccnt; i--; ) 2683 for (i = asynccnt; i--; )
1333 if (asyncs [i]->sent) 2684 if (asyncs [i]->sent)
1334 { 2685 {
1335 asyncs [i]->sent = 0; 2686 asyncs [i]->sent = 0;
2687 ECB_MEMORY_FENCE_RELEASE;
1336 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2688 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1337 } 2689 }
1338 } 2690 }
1339#endif 2691#endif
1340} 2692}
1341 2693
1342/*****************************************************************************/ 2694/*****************************************************************************/
1343 2695
2696void
2697ev_feed_signal (int signum) EV_NOEXCEPT
2698{
2699#if EV_MULTIPLICITY
2700 EV_P;
2701 ECB_MEMORY_FENCE_ACQUIRE;
2702 EV_A = signals [signum - 1].loop;
2703
2704 if (!EV_A)
2705 return;
2706#endif
2707
2708 signals [signum - 1].pending = 1;
2709 evpipe_write (EV_A_ &sig_pending);
2710}
2711
1344static void 2712static void
1345ev_sighandler (int signum) 2713ev_sighandler (int signum)
1346{ 2714{
1347#if EV_MULTIPLICITY
1348 EV_P = signals [signum - 1].loop;
1349#endif
1350
1351#ifdef _WIN32 2715#ifdef _WIN32
1352 signal (signum, ev_sighandler); 2716 signal (signum, ev_sighandler);
1353#endif 2717#endif
1354 2718
1355 signals [signum - 1].pending = 1; 2719 ev_feed_signal (signum);
1356 evpipe_write (EV_A_ &sig_pending);
1357} 2720}
1358 2721
1359void noinline 2722ecb_noinline
2723void
1360ev_feed_signal_event (EV_P_ int signum) 2724ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
1361{ 2725{
1362 WL w; 2726 WL w;
1363 2727
1364 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2728 if (ecb_expect_false (signum <= 0 || signum >= EV_NSIG))
1365 return; 2729 return;
1366 2730
1367 --signum; 2731 --signum;
1368 2732
1369#if EV_MULTIPLICITY 2733#if EV_MULTIPLICITY
1370 /* it is permissible to try to feed a signal to the wrong loop */ 2734 /* it is permissible to try to feed a signal to the wrong loop */
1371 /* or, likely more useful, feeding a signal nobody is waiting for */ 2735 /* or, likely more useful, feeding a signal nobody is waiting for */
1372 2736
1373 if (expect_false (signals [signum].loop != EV_A)) 2737 if (ecb_expect_false (signals [signum].loop != EV_A))
1374 return; 2738 return;
1375#endif 2739#endif
1376 2740
1377 signals [signum].pending = 0; 2741 signals [signum].pending = 0;
2742 ECB_MEMORY_FENCE_RELEASE;
1378 2743
1379 for (w = signals [signum].head; w; w = w->next) 2744 for (w = signals [signum].head; w; w = w->next)
1380 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2745 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1381} 2746}
1382 2747
… …
1461 2826
1462#endif 2827#endif
1463 2828
1464/*****************************************************************************/ 2829/*****************************************************************************/
1465 2830
2831#if EV_USE_IOCP
2832# include "ev_iocp.c"
2833#endif
1466#if EV_USE_PORT 2834#if EV_USE_PORT
1467# include "ev_port.c" 2835# include "ev_port.c"
1468#endif 2836#endif
1469#if EV_USE_KQUEUE 2837#if EV_USE_KQUEUE
1470# include "ev_kqueue.c" 2838# include "ev_kqueue.c"
1471#endif 2839#endif
1472#if EV_USE_EPOLL 2840#if EV_USE_EPOLL
1473# include "ev_epoll.c" 2841# include "ev_epoll.c"
1474#endif 2842#endif
2843#if EV_USE_LINUXAIO
2844# include "ev_linuxaio.c"
2845#endif
2846#if EV_USE_IOURING
2847# include "ev_iouring.c"
2848#endif
1475#if EV_USE_POLL 2849#if EV_USE_POLL
1476# include "ev_poll.c" 2850# include "ev_poll.c"
1477#endif 2851#endif
1478#if EV_USE_SELECT 2852#if EV_USE_SELECT
1479# include "ev_select.c" 2853# include "ev_select.c"
1480#endif 2854#endif
1481 2855
1482int 2856ecb_cold int
1483ev_version_major (void) 2857ev_version_major (void) EV_NOEXCEPT
1484{ 2858{
1485 return EV_VERSION_MAJOR; 2859 return EV_VERSION_MAJOR;
1486} 2860}
1487 2861
1488int 2862ecb_cold int
1489ev_version_minor (void) 2863ev_version_minor (void) EV_NOEXCEPT
1490{ 2864{
1491 return EV_VERSION_MINOR; 2865 return EV_VERSION_MINOR;
1492} 2866}
1493 2867
1494/* return true if we are running with elevated privileges and should ignore env variables */ 2868/* return true if we are running with elevated privileges and should ignore env variables */
1495int inline_size 2869inline_size ecb_cold int
1496enable_secure (void) 2870enable_secure (void)
1497{ 2871{
1498#ifdef _WIN32 2872#ifdef _WIN32
1499 return 0; 2873 return 0;
1500#else 2874#else
1501 return getuid () != geteuid () 2875 return getuid () != geteuid ()
1502 || getgid () != getegid (); 2876 || getgid () != getegid ();
1503#endif 2877#endif
1504} 2878}
1505 2879
2880ecb_cold
1506unsigned int 2881unsigned int
1507ev_supported_backends (void) 2882ev_supported_backends (void) EV_NOEXCEPT
1508{ 2883{
1509 unsigned int flags = 0; 2884 unsigned int flags = 0;
1510 2885
1511 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2886 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1512 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2887 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
1513 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 2888 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2889 if (EV_USE_LINUXAIO) flags |= EVBACKEND_LINUXAIO;
2890 if (EV_USE_IOURING ) flags |= EVBACKEND_IOURING;
1514 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 2891 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
1515 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2892 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
1516 2893
1517 return flags; 2894 return flags;
1518} 2895}
1519 2896
2897ecb_cold
1520unsigned int 2898unsigned int
1521ev_recommended_backends (void) 2899ev_recommended_backends (void) EV_NOEXCEPT
1522{ 2900{
1523 unsigned int flags = ev_supported_backends (); 2901 unsigned int flags = ev_supported_backends ();
1524 2902
1525#ifndef __NetBSD__ 2903#ifndef __NetBSD__
1526 /* kqueue is borked on everything but netbsd apparently */ 2904 /* kqueue is borked on everything but netbsd apparently */
… …
1534#endif 2912#endif
1535#ifdef __FreeBSD__ 2913#ifdef __FreeBSD__
1536 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */ 2914 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1537#endif 2915#endif
1538 2916
2917 /* TODO: linuxaio is very experimental */
2918#if !EV_RECOMMEND_LINUXAIO
2919 flags &= ~EVBACKEND_LINUXAIO;
2920#endif
2921 /* TODO: linuxaio is super experimental */
2922#if !EV_RECOMMEND_IOURING
2923 flags &= ~EVBACKEND_IOURING;
2924#endif
2925
1539 return flags; 2926 return flags;
1540} 2927}
1541 2928
2929ecb_cold
1542unsigned int 2930unsigned int
1543ev_embeddable_backends (void) 2931ev_embeddable_backends (void) EV_NOEXCEPT
1544{ 2932{
1545 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2933 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1546 2934
1547 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2935 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1548 /* please fix it and tell me how to detect the fix */ 2936 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1549 flags &= ~EVBACKEND_EPOLL; 2937 flags &= ~EVBACKEND_EPOLL;
2938
2939 /* EVBACKEND_LINUXAIO is theoretically embeddable, but suffers from a performance overhead */
2940
2941 /* EVBACKEND_IOURING is practically embeddable, but the current implementation is not
2942 * because our backend_fd is the epoll fd we need as fallback.
2943 * if the kernel ever is fixed, this might change...
2944 */
1550 2945
1551 return flags; 2946 return flags;
1552} 2947}
1553 2948
1554unsigned int 2949unsigned int
1555ev_backend (EV_P) 2950ev_backend (EV_P) EV_NOEXCEPT
1556{ 2951{
1557 return backend; 2952 return backend;
1558} 2953}
1559 2954
1560#if EV_FEATURE_API 2955#if EV_FEATURE_API
1561unsigned int 2956unsigned int
1562ev_iteration (EV_P) 2957ev_iteration (EV_P) EV_NOEXCEPT
1563{ 2958{
1564 return loop_count; 2959 return loop_count;
1565} 2960}
1566 2961
1567unsigned int 2962unsigned int
1568ev_depth (EV_P) 2963ev_depth (EV_P) EV_NOEXCEPT
1569{ 2964{
1570 return loop_depth; 2965 return loop_depth;
1571} 2966}
1572 2967
1573void 2968void
1574ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2969ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1575{ 2970{
1576 io_blocktime = interval; 2971 io_blocktime = interval;
1577} 2972}
1578 2973
1579void 2974void
1580ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2975ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1581{ 2976{
1582 timeout_blocktime = interval; 2977 timeout_blocktime = interval;
1583} 2978}
1584 2979
1585void 2980void
1586ev_set_userdata (EV_P_ void *data) 2981ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
1587{ 2982{
1588 userdata = data; 2983 userdata = data;
1589} 2984}
1590 2985
1591void * 2986void *
1592ev_userdata (EV_P) 2987ev_userdata (EV_P) EV_NOEXCEPT
1593{ 2988{
1594 return userdata; 2989 return userdata;
1595} 2990}
1596 2991
2992void
1597void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2993ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
1598{ 2994{
1599 invoke_cb = invoke_pending_cb; 2995 invoke_cb = invoke_pending_cb;
1600} 2996}
1601 2997
2998void
1602void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2999ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
1603{ 3000{
1604 release_cb = release; 3001 release_cb = release;
1605 acquire_cb = acquire; 3002 acquire_cb = acquire;
1606} 3003}
1607#endif 3004#endif
1608 3005
1609/* initialise a loop structure, must be zero-initialised */ 3006/* initialise a loop structure, must be zero-initialised */
1610static void noinline 3007ecb_noinline ecb_cold
3008static void
1611loop_init (EV_P_ unsigned int flags) 3009loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
1612{ 3010{
1613 if (!backend) 3011 if (!backend)
1614 { 3012 {
3013 origflags = flags;
3014
1615#if EV_USE_REALTIME 3015#if EV_USE_REALTIME
1616 if (!have_realtime) 3016 if (!have_realtime)
1617 { 3017 {
1618 struct timespec ts; 3018 struct timespec ts;
1619 3019
… …
1641 if (!(flags & EVFLAG_NOENV) 3041 if (!(flags & EVFLAG_NOENV)
1642 && !enable_secure () 3042 && !enable_secure ()
1643 && getenv ("LIBEV_FLAGS")) 3043 && getenv ("LIBEV_FLAGS"))
1644 flags = atoi (getenv ("LIBEV_FLAGS")); 3044 flags = atoi (getenv ("LIBEV_FLAGS"));
1645 3045
1646 ev_rt_now = ev_time (); 3046 ev_rt_now = ev_time ();
1647 mn_now = get_clock (); 3047 mn_now = get_clock ();
1648 now_floor = mn_now; 3048 now_floor = mn_now;
1649 rtmn_diff = ev_rt_now - mn_now; 3049 rtmn_diff = ev_rt_now - mn_now;
1650#if EV_FEATURE_API 3050#if EV_FEATURE_API
1651 invoke_cb = ev_invoke_pending; 3051 invoke_cb = ev_invoke_pending;
1652#endif 3052#endif
1653 3053
1654 io_blocktime = 0.; 3054 io_blocktime = 0.;
1655 timeout_blocktime = 0.; 3055 timeout_blocktime = 0.;
1656 backend = 0; 3056 backend = 0;
1657 backend_fd = -1; 3057 backend_fd = -1;
1658 sig_pending = 0; 3058 sig_pending = 0;
1659#if EV_ASYNC_ENABLE 3059#if EV_ASYNC_ENABLE
1660 async_pending = 0; 3060 async_pending = 0;
1661#endif 3061#endif
3062 pipe_write_skipped = 0;
3063 pipe_write_wanted = 0;
3064 evpipe [0] = -1;
3065 evpipe [1] = -1;
1662#if EV_USE_INOTIFY 3066#if EV_USE_INOTIFY
1663 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 3067 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1664#endif 3068#endif
1665#if EV_USE_SIGNALFD 3069#if EV_USE_SIGNALFD
1666 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 3070 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1667#endif 3071#endif
1668 3072
1669 if (!(flags & 0x0000ffffU)) 3073 if (!(flags & EVBACKEND_MASK))
1670 flags |= ev_recommended_backends (); 3074 flags |= ev_recommended_backends ();
1671 3075
3076#if EV_USE_IOCP
3077 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
3078#endif
1672#if EV_USE_PORT 3079#if EV_USE_PORT
1673 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 3080 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1674#endif 3081#endif
1675#if EV_USE_KQUEUE 3082#if EV_USE_KQUEUE
1676 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 3083 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
3084#endif
3085#if EV_USE_IOURING
3086 if (!backend && (flags & EVBACKEND_IOURING )) backend = iouring_init (EV_A_ flags);
3087#endif
3088#if EV_USE_LINUXAIO
3089 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
1677#endif 3090#endif
1678#if EV_USE_EPOLL 3091#if EV_USE_EPOLL
1679 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 3092 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
1680#endif 3093#endif
1681#if EV_USE_POLL 3094#if EV_USE_POLL
1682 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 3095 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
1683#endif 3096#endif
1684#if EV_USE_SELECT 3097#if EV_USE_SELECT
1685 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 3098 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
1686#endif 3099#endif
1687 3100
1688 ev_prepare_init (&pending_w, pendingcb); 3101 ev_prepare_init (&pending_w, pendingcb);
1689 3102
1690#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 3103#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
… …
1693#endif 3106#endif
1694 } 3107 }
1695} 3108}
1696 3109
1697/* free up a loop structure */ 3110/* free up a loop structure */
1698static void noinline 3111ecb_cold
3112void
1699loop_destroy (EV_P) 3113ev_loop_destroy (EV_P)
1700{ 3114{
1701 int i; 3115 int i;
3116
3117#if EV_MULTIPLICITY
3118 /* mimic free (0) */
3119 if (!EV_A)
3120 return;
3121#endif
3122
3123#if EV_CLEANUP_ENABLE
3124 /* queue cleanup watchers (and execute them) */
3125 if (ecb_expect_false (cleanupcnt))
3126 {
3127 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
3128 EV_INVOKE_PENDING;
3129 }
3130#endif
3131
3132#if EV_CHILD_ENABLE
3133 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
3134 {
3135 ev_ref (EV_A); /* child watcher */
3136 ev_signal_stop (EV_A_ &childev);
3137 }
3138#endif
1702 3139
1703 if (ev_is_active (&pipe_w)) 3140 if (ev_is_active (&pipe_w))
1704 { 3141 {
1705 /*ev_ref (EV_A);*/ 3142 /*ev_ref (EV_A);*/
1706 /*ev_io_stop (EV_A_ &pipe_w);*/ 3143 /*ev_io_stop (EV_A_ &pipe_w);*/
1707 3144
1708#if EV_USE_EVENTFD
1709 if (evfd >= 0)
1710 close (evfd);
1711#endif
1712
1713 if (evpipe [0] >= 0)
1714 {
1715 EV_WIN32_CLOSE_FD (evpipe [0]); 3145 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1716 EV_WIN32_CLOSE_FD (evpipe [1]); 3146 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1717 }
1718 } 3147 }
1719 3148
1720#if EV_USE_SIGNALFD 3149#if EV_USE_SIGNALFD
1721 if (ev_is_active (&sigfd_w)) 3150 if (ev_is_active (&sigfd_w))
1722 close (sigfd); 3151 close (sigfd);
… …
1728#endif 3157#endif
1729 3158
1730 if (backend_fd >= 0) 3159 if (backend_fd >= 0)
1731 close (backend_fd); 3160 close (backend_fd);
1732 3161
3162#if EV_USE_IOCP
3163 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
3164#endif
1733#if EV_USE_PORT 3165#if EV_USE_PORT
1734 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3166 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1735#endif 3167#endif
1736#if EV_USE_KQUEUE 3168#if EV_USE_KQUEUE
1737 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3169 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
3170#endif
3171#if EV_USE_IOURING
3172 if (backend == EVBACKEND_IOURING ) iouring_destroy (EV_A);
3173#endif
3174#if EV_USE_LINUXAIO
3175 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
1738#endif 3176#endif
1739#if EV_USE_EPOLL 3177#if EV_USE_EPOLL
1740 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3178 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
1741#endif 3179#endif
1742#if EV_USE_POLL 3180#if EV_USE_POLL
1743 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3181 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
1744#endif 3182#endif
1745#if EV_USE_SELECT 3183#if EV_USE_SELECT
1746 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3184 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
1747#endif 3185#endif
1748 3186
1749 for (i = NUMPRI; i--; ) 3187 for (i = NUMPRI; i--; )
1750 { 3188 {
1751 array_free (pending, [i]); 3189 array_free (pending, [i]);
… …
1764 array_free (periodic, EMPTY); 3202 array_free (periodic, EMPTY);
1765#endif 3203#endif
1766#if EV_FORK_ENABLE 3204#if EV_FORK_ENABLE
1767 array_free (fork, EMPTY); 3205 array_free (fork, EMPTY);
1768#endif 3206#endif
3207#if EV_CLEANUP_ENABLE
3208 array_free (cleanup, EMPTY);
3209#endif
1769 array_free (prepare, EMPTY); 3210 array_free (prepare, EMPTY);
1770 array_free (check, EMPTY); 3211 array_free (check, EMPTY);
1771#if EV_ASYNC_ENABLE 3212#if EV_ASYNC_ENABLE
1772 array_free (async, EMPTY); 3213 array_free (async, EMPTY);
1773#endif 3214#endif
1774 3215
1775 backend = 0; 3216 backend = 0;
3217
3218#if EV_MULTIPLICITY
3219 if (ev_is_default_loop (EV_A))
3220#endif
3221 ev_default_loop_ptr = 0;
3222#if EV_MULTIPLICITY
3223 else
3224 ev_free (EV_A);
3225#endif
1776} 3226}
1777 3227
1778#if EV_USE_INOTIFY 3228#if EV_USE_INOTIFY
1779inline_size void infy_fork (EV_P); 3229inline_size void infy_fork (EV_P);
1780#endif 3230#endif
1781 3231
1782inline_size void 3232inline_size void
1783loop_fork (EV_P) 3233loop_fork (EV_P)
1784{ 3234{
1785#if EV_USE_PORT 3235#if EV_USE_PORT
1786 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3236 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1787#endif 3237#endif
1788#if EV_USE_KQUEUE 3238#if EV_USE_KQUEUE
1789 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 3239 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
3240#endif
3241#if EV_USE_IOURING
3242 if (backend == EVBACKEND_IOURING ) iouring_fork (EV_A);
3243#endif
3244#if EV_USE_LINUXAIO
3245 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
1790#endif 3246#endif
1791#if EV_USE_EPOLL 3247#if EV_USE_EPOLL
1792 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3248 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
1793#endif 3249#endif
1794#if EV_USE_INOTIFY 3250#if EV_USE_INOTIFY
1795 infy_fork (EV_A); 3251 infy_fork (EV_A);
1796#endif 3252#endif
1797 3253
3254#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1798 if (ev_is_active (&pipe_w)) 3255 if (ev_is_active (&pipe_w) && postfork != 2)
1799 { 3256 {
1800 /* this "locks" the handlers against writing to the pipe */ 3257 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1801 /* while we modify the fd vars */
1802 sig_pending = 1;
1803#if EV_ASYNC_ENABLE
1804 async_pending = 1;
1805#endif
1806 3258
1807 ev_ref (EV_A); 3259 ev_ref (EV_A);
1808 ev_io_stop (EV_A_ &pipe_w); 3260 ev_io_stop (EV_A_ &pipe_w);
1809 3261
1810#if EV_USE_EVENTFD
1811 if (evfd >= 0)
1812 close (evfd);
1813#endif
1814
1815 if (evpipe [0] >= 0) 3262 if (evpipe [0] >= 0)
1816 {
1817 EV_WIN32_CLOSE_FD (evpipe [0]); 3263 EV_WIN32_CLOSE_FD (evpipe [0]);
1818 EV_WIN32_CLOSE_FD (evpipe [1]);
1819 }
1820 3264
1821#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1822 evpipe_init (EV_A); 3265 evpipe_init (EV_A);
1823 /* now iterate over everything, in case we missed something */ 3266 /* iterate over everything, in case we missed something before */
1824 pipecb (EV_A_ &pipe_w, EV_READ); 3267 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1825#endif
1826 } 3268 }
3269#endif
1827 3270
1828 postfork = 0; 3271 postfork = 0;
1829} 3272}
1830 3273
1831#if EV_MULTIPLICITY 3274#if EV_MULTIPLICITY
1832 3275
3276ecb_cold
1833struct ev_loop * 3277struct ev_loop *
1834ev_loop_new (unsigned int flags) 3278ev_loop_new (unsigned int flags) EV_NOEXCEPT
1835{ 3279{
1836 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3280 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1837 3281
1838 memset (EV_A, 0, sizeof (struct ev_loop)); 3282 memset (EV_A, 0, sizeof (struct ev_loop));
1839 loop_init (EV_A_ flags); 3283 loop_init (EV_A_ flags);
1840 3284
1841 if (ev_backend (EV_A)) 3285 if (ev_backend (EV_A))
1842 return EV_A; 3286 return EV_A;
1843 3287
3288 ev_free (EV_A);
1844 return 0; 3289 return 0;
1845} 3290}
1846 3291
1847void
1848ev_loop_destroy (EV_P)
1849{
1850 loop_destroy (EV_A);
1851 ev_free (loop);
1852}
1853
1854void
1855ev_loop_fork (EV_P)
1856{
1857 postfork = 1; /* must be in line with ev_default_fork */
1858}
1859#endif /* multiplicity */ 3292#endif /* multiplicity */
1860 3293
1861#if EV_VERIFY 3294#if EV_VERIFY
1862static void noinline 3295ecb_noinline ecb_cold
3296static void
1863verify_watcher (EV_P_ W w) 3297verify_watcher (EV_P_ W w)
1864{ 3298{
1865 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3299 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1866 3300
1867 if (w->pending) 3301 if (w->pending)
1868 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3302 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1869} 3303}
1870 3304
1871static void noinline 3305ecb_noinline ecb_cold
3306static void
1872verify_heap (EV_P_ ANHE *heap, int N) 3307verify_heap (EV_P_ ANHE *heap, int N)
1873{ 3308{
1874 int i; 3309 int i;
1875 3310
1876 for (i = HEAP0; i < N + HEAP0; ++i) 3311 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1881 3316
1882 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3317 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1883 } 3318 }
1884} 3319}
1885 3320
1886static void noinline 3321ecb_noinline ecb_cold
3322static void
1887array_verify (EV_P_ W *ws, int cnt) 3323array_verify (EV_P_ W *ws, int cnt)
1888{ 3324{
1889 while (cnt--) 3325 while (cnt--)
1890 { 3326 {
1891 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3327 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
1893 } 3329 }
1894} 3330}
1895#endif 3331#endif
1896 3332
1897#if EV_FEATURE_API 3333#if EV_FEATURE_API
1898void 3334void ecb_cold
1899ev_verify (EV_P) 3335ev_verify (EV_P) EV_NOEXCEPT
1900{ 3336{
1901#if EV_VERIFY 3337#if EV_VERIFY
1902 int i; 3338 int i;
1903 WL w; 3339 WL w, w2;
1904 3340
1905 assert (activecnt >= -1); 3341 assert (activecnt >= -1);
1906 3342
1907 assert (fdchangemax >= fdchangecnt); 3343 assert (fdchangemax >= fdchangecnt);
1908 for (i = 0; i < fdchangecnt; ++i) 3344 for (i = 0; i < fdchangecnt; ++i)
1909 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3345 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1910 3346
1911 assert (anfdmax >= 0); 3347 assert (anfdmax >= 0);
1912 for (i = 0; i < anfdmax; ++i) 3348 for (i = 0; i < anfdmax; ++i)
3349 {
3350 int j = 0;
3351
1913 for (w = anfds [i].head; w; w = w->next) 3352 for (w = w2 = anfds [i].head; w; w = w->next)
1914 { 3353 {
1915 verify_watcher (EV_A_ (W)w); 3354 verify_watcher (EV_A_ (W)w);
3355
3356 if (j++ & 1)
3357 {
3358 assert (("libev: io watcher list contains a loop", w != w2));
3359 w2 = w2->next;
3360 }
3361
1916 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3362 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1917 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 3363 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1918 } 3364 }
3365 }
1919 3366
1920 assert (timermax >= timercnt); 3367 assert (timermax >= timercnt);
1921 verify_heap (EV_A_ timers, timercnt); 3368 verify_heap (EV_A_ timers, timercnt);
1922 3369
1923#if EV_PERIODIC_ENABLE 3370#if EV_PERIODIC_ENABLE
… …
1938#if EV_FORK_ENABLE 3385#if EV_FORK_ENABLE
1939 assert (forkmax >= forkcnt); 3386 assert (forkmax >= forkcnt);
1940 array_verify (EV_A_ (W *)forks, forkcnt); 3387 array_verify (EV_A_ (W *)forks, forkcnt);
1941#endif 3388#endif
1942 3389
3390#if EV_CLEANUP_ENABLE
3391 assert (cleanupmax >= cleanupcnt);
3392 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
3393#endif
3394
1943#if EV_ASYNC_ENABLE 3395#if EV_ASYNC_ENABLE
1944 assert (asyncmax >= asynccnt); 3396 assert (asyncmax >= asynccnt);
1945 array_verify (EV_A_ (W *)asyncs, asynccnt); 3397 array_verify (EV_A_ (W *)asyncs, asynccnt);
1946#endif 3398#endif
1947 3399
… …
1964#endif 3416#endif
1965} 3417}
1966#endif 3418#endif
1967 3419
1968#if EV_MULTIPLICITY 3420#if EV_MULTIPLICITY
3421ecb_cold
1969struct ev_loop * 3422struct ev_loop *
1970ev_default_loop_init (unsigned int flags)
1971#else 3423#else
1972int 3424int
3425#endif
1973ev_default_loop (unsigned int flags) 3426ev_default_loop (unsigned int flags) EV_NOEXCEPT
1974#endif
1975{ 3427{
1976 if (!ev_default_loop_ptr) 3428 if (!ev_default_loop_ptr)
1977 { 3429 {
1978#if EV_MULTIPLICITY 3430#if EV_MULTIPLICITY
1979 EV_P = ev_default_loop_ptr = &default_loop_struct; 3431 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1998 3450
1999 return ev_default_loop_ptr; 3451 return ev_default_loop_ptr;
2000} 3452}
2001 3453
2002void 3454void
2003ev_default_destroy (void) 3455ev_loop_fork (EV_P) EV_NOEXCEPT
2004{ 3456{
2005#if EV_MULTIPLICITY 3457 postfork = 1;
2006 EV_P = ev_default_loop_ptr;
2007#endif
2008
2009 ev_default_loop_ptr = 0;
2010
2011#if EV_CHILD_ENABLE
2012 ev_ref (EV_A); /* child watcher */
2013 ev_signal_stop (EV_A_ &childev);
2014#endif
2015
2016 loop_destroy (EV_A);
2017}
2018
2019void
2020ev_default_fork (void)
2021{
2022#if EV_MULTIPLICITY
2023 EV_P = ev_default_loop_ptr;
2024#endif
2025
2026 postfork = 1; /* must be in line with ev_loop_fork */
2027} 3458}
2028 3459
2029/*****************************************************************************/ 3460/*****************************************************************************/
2030 3461
2031void 3462void
… …
2033{ 3464{
2034 EV_CB_INVOKE ((W)w, revents); 3465 EV_CB_INVOKE ((W)w, revents);
2035} 3466}
2036 3467
2037unsigned int 3468unsigned int
2038ev_pending_count (EV_P) 3469ev_pending_count (EV_P) EV_NOEXCEPT
2039{ 3470{
2040 int pri; 3471 int pri;
2041 unsigned int count = 0; 3472 unsigned int count = 0;
2042 3473
2043 for (pri = NUMPRI; pri--; ) 3474 for (pri = NUMPRI; pri--; )
2044 count += pendingcnt [pri]; 3475 count += pendingcnt [pri];
2045 3476
2046 return count; 3477 return count;
2047} 3478}
2048 3479
2049void noinline 3480ecb_noinline
3481void
2050ev_invoke_pending (EV_P) 3482ev_invoke_pending (EV_P)
2051{ 3483{
2052 int pri; 3484 pendingpri = NUMPRI;
2053 3485
2054 for (pri = NUMPRI; pri--; ) 3486 do
3487 {
3488 --pendingpri;
3489
3490 /* pendingpri possibly gets modified in the inner loop */
2055 while (pendingcnt [pri]) 3491 while (pendingcnt [pendingpri])
2056 { 3492 {
2057 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3493 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2058 3494
2059 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2060 /* ^ this is no longer true, as pending_w could be here */
2061
2062 p->w->pending = 0; 3495 p->w->pending = 0;
2063 EV_CB_INVOKE (p->w, p->events); 3496 EV_CB_INVOKE (p->w, p->events);
2064 EV_FREQUENT_CHECK; 3497 EV_FREQUENT_CHECK;
2065 } 3498 }
3499 }
3500 while (pendingpri);
2066} 3501}
2067 3502
2068#if EV_IDLE_ENABLE 3503#if EV_IDLE_ENABLE
2069/* make idle watchers pending. this handles the "call-idle */ 3504/* make idle watchers pending. this handles the "call-idle */
2070/* only when higher priorities are idle" logic */ 3505/* only when higher priorities are idle" logic */
2071inline_size void 3506inline_size void
2072idle_reify (EV_P) 3507idle_reify (EV_P)
2073{ 3508{
2074 if (expect_false (idleall)) 3509 if (ecb_expect_false (idleall))
2075 { 3510 {
2076 int pri; 3511 int pri;
2077 3512
2078 for (pri = NUMPRI; pri--; ) 3513 for (pri = NUMPRI; pri--; )
2079 { 3514 {
… …
2127 feed_reverse_done (EV_A_ EV_TIMER); 3562 feed_reverse_done (EV_A_ EV_TIMER);
2128 } 3563 }
2129} 3564}
2130 3565
2131#if EV_PERIODIC_ENABLE 3566#if EV_PERIODIC_ENABLE
3567
3568ecb_noinline
3569static void
3570periodic_recalc (EV_P_ ev_periodic *w)
3571{
3572 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3573 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3574
3575 /* the above almost always errs on the low side */
3576 while (at <= ev_rt_now)
3577 {
3578 ev_tstamp nat = at + w->interval;
3579
3580 /* when resolution fails us, we use ev_rt_now */
3581 if (ecb_expect_false (nat == at))
3582 {
3583 at = ev_rt_now;
3584 break;
3585 }
3586
3587 at = nat;
3588 }
3589
3590 ev_at (w) = at;
3591}
3592
2132/* make periodics pending */ 3593/* make periodics pending */
2133inline_size void 3594inline_size void
2134periodics_reify (EV_P) 3595periodics_reify (EV_P)
2135{ 3596{
2136 EV_FREQUENT_CHECK; 3597 EV_FREQUENT_CHECK;
2137 3598
2138 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3599 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2139 { 3600 {
2140 int feed_count = 0;
2141
2142 do 3601 do
2143 { 3602 {
2144 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3603 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2145 3604
2146 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3605 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2155 ANHE_at_cache (periodics [HEAP0]); 3614 ANHE_at_cache (periodics [HEAP0]);
2156 downheap (periodics, periodiccnt, HEAP0); 3615 downheap (periodics, periodiccnt, HEAP0);
2157 } 3616 }
2158 else if (w->interval) 3617 else if (w->interval)
2159 { 3618 {
2160 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3619 periodic_recalc (EV_A_ w);
2161 /* if next trigger time is not sufficiently in the future, put it there */
2162 /* this might happen because of floating point inexactness */
2163 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2164 {
2165 ev_at (w) += w->interval;
2166
2167 /* if interval is unreasonably low we might still have a time in the past */
2168 /* so correct this. this will make the periodic very inexact, but the user */
2169 /* has effectively asked to get triggered more often than possible */
2170 if (ev_at (w) < ev_rt_now)
2171 ev_at (w) = ev_rt_now;
2172 }
2173
2174 ANHE_at_cache (periodics [HEAP0]); 3620 ANHE_at_cache (periodics [HEAP0]);
2175 downheap (periodics, periodiccnt, HEAP0); 3621 downheap (periodics, periodiccnt, HEAP0);
2176 } 3622 }
2177 else 3623 else
2178 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3624 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2186 } 3632 }
2187} 3633}
2188 3634
2189/* simply recalculate all periodics */ 3635/* simply recalculate all periodics */
2190/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3636/* TODO: maybe ensure that at least one event happens when jumping forward? */
2191static void noinline 3637ecb_noinline ecb_cold
3638static void
2192periodics_reschedule (EV_P) 3639periodics_reschedule (EV_P)
2193{ 3640{
2194 int i; 3641 int i;
2195 3642
2196 /* adjust periodics after time jump */ 3643 /* adjust periodics after time jump */
… …
2199 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3646 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2200 3647
2201 if (w->reschedule_cb) 3648 if (w->reschedule_cb)
2202 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3649 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2203 else if (w->interval) 3650 else if (w->interval)
2204 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3651 periodic_recalc (EV_A_ w);
2205 3652
2206 ANHE_at_cache (periodics [i]); 3653 ANHE_at_cache (periodics [i]);
2207 } 3654 }
2208 3655
2209 reheap (periodics, periodiccnt); 3656 reheap (periodics, periodiccnt);
2210} 3657}
2211#endif 3658#endif
2212 3659
2213/* adjust all timers by a given offset */ 3660/* adjust all timers by a given offset */
2214static void noinline 3661ecb_noinline ecb_cold
3662static void
2215timers_reschedule (EV_P_ ev_tstamp adjust) 3663timers_reschedule (EV_P_ ev_tstamp adjust)
2216{ 3664{
2217 int i; 3665 int i;
2218 3666
2219 for (i = 0; i < timercnt; ++i) 3667 for (i = 0; i < timercnt; ++i)
… …
2228/* also detect if there was a timejump, and act accordingly */ 3676/* also detect if there was a timejump, and act accordingly */
2229inline_speed void 3677inline_speed void
2230time_update (EV_P_ ev_tstamp max_block) 3678time_update (EV_P_ ev_tstamp max_block)
2231{ 3679{
2232#if EV_USE_MONOTONIC 3680#if EV_USE_MONOTONIC
2233 if (expect_true (have_monotonic)) 3681 if (ecb_expect_true (have_monotonic))
2234 { 3682 {
2235 int i; 3683 int i;
2236 ev_tstamp odiff = rtmn_diff; 3684 ev_tstamp odiff = rtmn_diff;
2237 3685
2238 mn_now = get_clock (); 3686 mn_now = get_clock ();
2239 3687
2240 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3688 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
2241 /* interpolate in the meantime */ 3689 /* interpolate in the meantime */
2242 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 3690 if (ecb_expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
2243 { 3691 {
2244 ev_rt_now = rtmn_diff + mn_now; 3692 ev_rt_now = rtmn_diff + mn_now;
2245 return; 3693 return;
2246 } 3694 }
2247 3695
… …
2256 * doesn't hurt either as we only do this on time-jumps or 3704 * doesn't hurt either as we only do this on time-jumps or
2257 * in the unlikely event of having been preempted here. 3705 * in the unlikely event of having been preempted here.
2258 */ 3706 */
2259 for (i = 4; --i; ) 3707 for (i = 4; --i; )
2260 { 3708 {
3709 ev_tstamp diff;
2261 rtmn_diff = ev_rt_now - mn_now; 3710 rtmn_diff = ev_rt_now - mn_now;
2262 3711
3712 diff = odiff - rtmn_diff;
3713
2263 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3714 if (ecb_expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2264 return; /* all is well */ 3715 return; /* all is well */
2265 3716
2266 ev_rt_now = ev_time (); 3717 ev_rt_now = ev_time ();
2267 mn_now = get_clock (); 3718 mn_now = get_clock ();
2268 now_floor = mn_now; 3719 now_floor = mn_now;
… …
2277 else 3728 else
2278#endif 3729#endif
2279 { 3730 {
2280 ev_rt_now = ev_time (); 3731 ev_rt_now = ev_time ();
2281 3732
2282 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 3733 if (ecb_expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
2283 { 3734 {
2284 /* adjust timers. this is easy, as the offset is the same for all of them */ 3735 /* adjust timers. this is easy, as the offset is the same for all of them */
2285 timers_reschedule (EV_A_ ev_rt_now - mn_now); 3736 timers_reschedule (EV_A_ ev_rt_now - mn_now);
2286#if EV_PERIODIC_ENABLE 3737#if EV_PERIODIC_ENABLE
2287 periodics_reschedule (EV_A); 3738 periodics_reschedule (EV_A);
… …
2290 3741
2291 mn_now = ev_rt_now; 3742 mn_now = ev_rt_now;
2292 } 3743 }
2293} 3744}
2294 3745
2295void 3746int
2296ev_loop (EV_P_ int flags) 3747ev_run (EV_P_ int flags)
2297{ 3748{
2298#if EV_FEATURE_API 3749#if EV_FEATURE_API
2299 ++loop_depth; 3750 ++loop_depth;
2300#endif 3751#endif
2301 3752
2302 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 3753 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2303 3754
2304 loop_done = EVUNLOOP_CANCEL; 3755 loop_done = EVBREAK_CANCEL;
2305 3756
2306 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 3757 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2307 3758
2308 do 3759 do
2309 { 3760 {
2310#if EV_VERIFY >= 2 3761#if EV_VERIFY >= 2
2311 ev_verify (EV_A); 3762 ev_verify (EV_A);
2312#endif 3763#endif
2313 3764
2314#ifndef _WIN32 3765#ifndef _WIN32
2315 if (expect_false (curpid)) /* penalise the forking check even more */ 3766 if (ecb_expect_false (curpid)) /* penalise the forking check even more */
2316 if (expect_false (getpid () != curpid)) 3767 if (ecb_expect_false (getpid () != curpid))
2317 { 3768 {
2318 curpid = getpid (); 3769 curpid = getpid ();
2319 postfork = 1; 3770 postfork = 1;
2320 } 3771 }
2321#endif 3772#endif
2322 3773
2323#if EV_FORK_ENABLE 3774#if EV_FORK_ENABLE
2324 /* we might have forked, so queue fork handlers */ 3775 /* we might have forked, so queue fork handlers */
2325 if (expect_false (postfork)) 3776 if (ecb_expect_false (postfork))
2326 if (forkcnt) 3777 if (forkcnt)
2327 { 3778 {
2328 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3779 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2329 EV_INVOKE_PENDING; 3780 EV_INVOKE_PENDING;
2330 } 3781 }
2331#endif 3782#endif
2332 3783
2333#if EV_PREPARE_ENABLE 3784#if EV_PREPARE_ENABLE
2334 /* queue prepare watchers (and execute them) */ 3785 /* queue prepare watchers (and execute them) */
2335 if (expect_false (preparecnt)) 3786 if (ecb_expect_false (preparecnt))
2336 { 3787 {
2337 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3788 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2338 EV_INVOKE_PENDING; 3789 EV_INVOKE_PENDING;
2339 } 3790 }
2340#endif 3791#endif
2341 3792
2342 if (expect_false (loop_done)) 3793 if (ecb_expect_false (loop_done))
2343 break; 3794 break;
2344 3795
2345 /* we might have forked, so reify kernel state if necessary */ 3796 /* we might have forked, so reify kernel state if necessary */
2346 if (expect_false (postfork)) 3797 if (ecb_expect_false (postfork))
2347 loop_fork (EV_A); 3798 loop_fork (EV_A);
2348 3799
2349 /* update fd-related kernel structures */ 3800 /* update fd-related kernel structures */
2350 fd_reify (EV_A); 3801 fd_reify (EV_A);
2351 3802
2352 /* calculate blocking time */ 3803 /* calculate blocking time */
2353 { 3804 {
2354 ev_tstamp waittime = 0.; 3805 ev_tstamp waittime = 0.;
2355 ev_tstamp sleeptime = 0.; 3806 ev_tstamp sleeptime = 0.;
2356 3807
3808 /* remember old timestamp for io_blocktime calculation */
3809 ev_tstamp prev_mn_now = mn_now;
3810
3811 /* update time to cancel out callback processing overhead */
3812 time_update (EV_A_ 1e100);
3813
3814 /* from now on, we want a pipe-wake-up */
3815 pipe_write_wanted = 1;
3816
3817 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3818
2357 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3819 if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2358 { 3820 {
2359 /* remember old timestamp for io_blocktime calculation */
2360 ev_tstamp prev_mn_now = mn_now;
2361
2362 /* update time to cancel out callback processing overhead */
2363 time_update (EV_A_ 1e100);
2364
2365 waittime = MAX_BLOCKTIME; 3821 waittime = MAX_BLOCKTIME;
2366 3822
2367 if (timercnt) 3823 if (timercnt)
2368 { 3824 {
2369 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3825 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2370 if (waittime > to) waittime = to; 3826 if (waittime > to) waittime = to;
2371 } 3827 }
2372 3828
2373#if EV_PERIODIC_ENABLE 3829#if EV_PERIODIC_ENABLE
2374 if (periodiccnt) 3830 if (periodiccnt)
2375 { 3831 {
2376 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3832 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2377 if (waittime > to) waittime = to; 3833 if (waittime > to) waittime = to;
2378 } 3834 }
2379#endif 3835#endif
2380 3836
2381 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3837 /* don't let timeouts decrease the waittime below timeout_blocktime */
2382 if (expect_false (waittime < timeout_blocktime)) 3838 if (ecb_expect_false (waittime < timeout_blocktime))
2383 waittime = timeout_blocktime; 3839 waittime = timeout_blocktime;
2384 3840
3841 /* at this point, we NEED to wait, so we have to ensure */
3842 /* to pass a minimum nonzero value to the backend */
3843 if (ecb_expect_false (waittime < backend_mintime))
3844 waittime = backend_mintime;
3845
2385 /* extra check because io_blocktime is commonly 0 */ 3846 /* extra check because io_blocktime is commonly 0 */
2386 if (expect_false (io_blocktime)) 3847 if (ecb_expect_false (io_blocktime))
2387 { 3848 {
2388 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3849 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2389 3850
2390 if (sleeptime > waittime - backend_fudge) 3851 if (sleeptime > waittime - backend_mintime)
2391 sleeptime = waittime - backend_fudge; 3852 sleeptime = waittime - backend_mintime;
2392 3853
2393 if (expect_true (sleeptime > 0.)) 3854 if (ecb_expect_true (sleeptime > 0.))
2394 { 3855 {
2395 ev_sleep (sleeptime); 3856 ev_sleep (sleeptime);
2396 waittime -= sleeptime; 3857 waittime -= sleeptime;
2397 } 3858 }
2398 } 3859 }
2399 } 3860 }
2400 3861
2401#if EV_FEATURE_API 3862#if EV_FEATURE_API
2402 ++loop_count; 3863 ++loop_count;
2403#endif 3864#endif
2404 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3865 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2405 backend_poll (EV_A_ waittime); 3866 backend_poll (EV_A_ waittime);
2406 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 3867 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3868
3869 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3870
3871 ECB_MEMORY_FENCE_ACQUIRE;
3872 if (pipe_write_skipped)
3873 {
3874 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3875 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3876 }
2407 3877
2408 /* update ev_rt_now, do magic */ 3878 /* update ev_rt_now, do magic */
2409 time_update (EV_A_ waittime + sleeptime); 3879 time_update (EV_A_ waittime + sleeptime);
2410 } 3880 }
2411 3881
… …
2420 idle_reify (EV_A); 3890 idle_reify (EV_A);
2421#endif 3891#endif
2422 3892
2423#if EV_CHECK_ENABLE 3893#if EV_CHECK_ENABLE
2424 /* queue check watchers, to be executed first */ 3894 /* queue check watchers, to be executed first */
2425 if (expect_false (checkcnt)) 3895 if (ecb_expect_false (checkcnt))
2426 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3896 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2427#endif 3897#endif
2428 3898
2429 EV_INVOKE_PENDING; 3899 EV_INVOKE_PENDING;
2430 } 3900 }
2431 while (expect_true ( 3901 while (ecb_expect_true (
2432 activecnt 3902 activecnt
2433 && !loop_done 3903 && !loop_done
2434 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3904 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2435 )); 3905 ));
2436 3906
2437 if (loop_done == EVUNLOOP_ONE) 3907 if (loop_done == EVBREAK_ONE)
2438 loop_done = EVUNLOOP_CANCEL; 3908 loop_done = EVBREAK_CANCEL;
2439 3909
2440#if EV_FEATURE_API 3910#if EV_FEATURE_API
2441 --loop_depth; 3911 --loop_depth;
2442#endif 3912#endif
2443}
2444 3913
3914 return activecnt;
3915}
3916
2445void 3917void
2446ev_unloop (EV_P_ int how) 3918ev_break (EV_P_ int how) EV_NOEXCEPT
2447{ 3919{
2448 loop_done = how; 3920 loop_done = how;
2449} 3921}
2450 3922
2451void 3923void
2452ev_ref (EV_P) 3924ev_ref (EV_P) EV_NOEXCEPT
2453{ 3925{
2454 ++activecnt; 3926 ++activecnt;
2455} 3927}
2456 3928
2457void 3929void
2458ev_unref (EV_P) 3930ev_unref (EV_P) EV_NOEXCEPT
2459{ 3931{
2460 --activecnt; 3932 --activecnt;
2461} 3933}
2462 3934
2463void 3935void
2464ev_now_update (EV_P) 3936ev_now_update (EV_P) EV_NOEXCEPT
2465{ 3937{
2466 time_update (EV_A_ 1e100); 3938 time_update (EV_A_ 1e100);
2467} 3939}
2468 3940
2469void 3941void
2470ev_suspend (EV_P) 3942ev_suspend (EV_P) EV_NOEXCEPT
2471{ 3943{
2472 ev_now_update (EV_A); 3944 ev_now_update (EV_A);
2473} 3945}
2474 3946
2475void 3947void
2476ev_resume (EV_P) 3948ev_resume (EV_P) EV_NOEXCEPT
2477{ 3949{
2478 ev_tstamp mn_prev = mn_now; 3950 ev_tstamp mn_prev = mn_now;
2479 3951
2480 ev_now_update (EV_A); 3952 ev_now_update (EV_A);
2481 timers_reschedule (EV_A_ mn_now - mn_prev); 3953 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2498inline_size void 3970inline_size void
2499wlist_del (WL *head, WL elem) 3971wlist_del (WL *head, WL elem)
2500{ 3972{
2501 while (*head) 3973 while (*head)
2502 { 3974 {
2503 if (expect_true (*head == elem)) 3975 if (ecb_expect_true (*head == elem))
2504 { 3976 {
2505 *head = elem->next; 3977 *head = elem->next;
2506 break; 3978 break;
2507 } 3979 }
2508 3980
… …
2520 w->pending = 0; 3992 w->pending = 0;
2521 } 3993 }
2522} 3994}
2523 3995
2524int 3996int
2525ev_clear_pending (EV_P_ void *w) 3997ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
2526{ 3998{
2527 W w_ = (W)w; 3999 W w_ = (W)w;
2528 int pending = w_->pending; 4000 int pending = w_->pending;
2529 4001
2530 if (expect_true (pending)) 4002 if (ecb_expect_true (pending))
2531 { 4003 {
2532 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 4004 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2533 p->w = (W)&pending_w; 4005 p->w = (W)&pending_w;
2534 w_->pending = 0; 4006 w_->pending = 0;
2535 return p->events; 4007 return p->events;
… …
2562 w->active = 0; 4034 w->active = 0;
2563} 4035}
2564 4036
2565/*****************************************************************************/ 4037/*****************************************************************************/
2566 4038
2567void noinline 4039ecb_noinline
4040void
2568ev_io_start (EV_P_ ev_io *w) 4041ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
2569{ 4042{
2570 int fd = w->fd; 4043 int fd = w->fd;
2571 4044
2572 if (expect_false (ev_is_active (w))) 4045 if (ecb_expect_false (ev_is_active (w)))
2573 return; 4046 return;
2574 4047
2575 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 4048 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2576 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 4049 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2577 4050
4051#if EV_VERIFY >= 2
4052 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
4053#endif
2578 EV_FREQUENT_CHECK; 4054 EV_FREQUENT_CHECK;
2579 4055
2580 ev_start (EV_A_ (W)w, 1); 4056 ev_start (EV_A_ (W)w, 1);
2581 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 4057 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
2582 wlist_add (&anfds[fd].head, (WL)w); 4058 wlist_add (&anfds[fd].head, (WL)w);
4059
4060 /* common bug, apparently */
4061 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
2583 4062
2584 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 4063 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2585 w->events &= ~EV__IOFDSET; 4064 w->events &= ~EV__IOFDSET;
2586 4065
2587 EV_FREQUENT_CHECK; 4066 EV_FREQUENT_CHECK;
2588} 4067}
2589 4068
2590void noinline 4069ecb_noinline
4070void
2591ev_io_stop (EV_P_ ev_io *w) 4071ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
2592{ 4072{
2593 clear_pending (EV_A_ (W)w); 4073 clear_pending (EV_A_ (W)w);
2594 if (expect_false (!ev_is_active (w))) 4074 if (ecb_expect_false (!ev_is_active (w)))
2595 return; 4075 return;
2596 4076
2597 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 4077 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2598 4078
4079#if EV_VERIFY >= 2
4080 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
4081#endif
2599 EV_FREQUENT_CHECK; 4082 EV_FREQUENT_CHECK;
2600 4083
2601 wlist_del (&anfds[w->fd].head, (WL)w); 4084 wlist_del (&anfds[w->fd].head, (WL)w);
2602 ev_stop (EV_A_ (W)w); 4085 ev_stop (EV_A_ (W)w);
2603 4086
2604 fd_change (EV_A_ w->fd, 1); 4087 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2605 4088
2606 EV_FREQUENT_CHECK; 4089 EV_FREQUENT_CHECK;
2607} 4090}
2608 4091
2609void noinline 4092ecb_noinline
4093void
2610ev_timer_start (EV_P_ ev_timer *w) 4094ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
2611{ 4095{
2612 if (expect_false (ev_is_active (w))) 4096 if (ecb_expect_false (ev_is_active (w)))
2613 return; 4097 return;
2614 4098
2615 ev_at (w) += mn_now; 4099 ev_at (w) += mn_now;
2616 4100
2617 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 4101 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2618 4102
2619 EV_FREQUENT_CHECK; 4103 EV_FREQUENT_CHECK;
2620 4104
2621 ++timercnt; 4105 ++timercnt;
2622 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 4106 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
2623 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 4107 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
2624 ANHE_w (timers [ev_active (w)]) = (WT)w; 4108 ANHE_w (timers [ev_active (w)]) = (WT)w;
2625 ANHE_at_cache (timers [ev_active (w)]); 4109 ANHE_at_cache (timers [ev_active (w)]);
2626 upheap (timers, ev_active (w)); 4110 upheap (timers, ev_active (w));
2627 4111
2628 EV_FREQUENT_CHECK; 4112 EV_FREQUENT_CHECK;
2629 4113
2630 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 4114 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2631} 4115}
2632 4116
2633void noinline 4117ecb_noinline
4118void
2634ev_timer_stop (EV_P_ ev_timer *w) 4119ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
2635{ 4120{
2636 clear_pending (EV_A_ (W)w); 4121 clear_pending (EV_A_ (W)w);
2637 if (expect_false (!ev_is_active (w))) 4122 if (ecb_expect_false (!ev_is_active (w)))
2638 return; 4123 return;
2639 4124
2640 EV_FREQUENT_CHECK; 4125 EV_FREQUENT_CHECK;
2641 4126
2642 { 4127 {
… …
2644 4129
2645 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 4130 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2646 4131
2647 --timercnt; 4132 --timercnt;
2648 4133
2649 if (expect_true (active < timercnt + HEAP0)) 4134 if (ecb_expect_true (active < timercnt + HEAP0))
2650 { 4135 {
2651 timers [active] = timers [timercnt + HEAP0]; 4136 timers [active] = timers [timercnt + HEAP0];
2652 adjustheap (timers, timercnt, active); 4137 adjustheap (timers, timercnt, active);
2653 } 4138 }
2654 } 4139 }
… …
2658 ev_stop (EV_A_ (W)w); 4143 ev_stop (EV_A_ (W)w);
2659 4144
2660 EV_FREQUENT_CHECK; 4145 EV_FREQUENT_CHECK;
2661} 4146}
2662 4147
2663void noinline 4148ecb_noinline
4149void
2664ev_timer_again (EV_P_ ev_timer *w) 4150ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
2665{ 4151{
2666 EV_FREQUENT_CHECK; 4152 EV_FREQUENT_CHECK;
4153
4154 clear_pending (EV_A_ (W)w);
2667 4155
2668 if (ev_is_active (w)) 4156 if (ev_is_active (w))
2669 { 4157 {
2670 if (w->repeat) 4158 if (w->repeat)
2671 { 4159 {
… …
2684 4172
2685 EV_FREQUENT_CHECK; 4173 EV_FREQUENT_CHECK;
2686} 4174}
2687 4175
2688ev_tstamp 4176ev_tstamp
2689ev_timer_remaining (EV_P_ ev_timer *w) 4177ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
2690{ 4178{
2691 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4179 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2692} 4180}
2693 4181
2694#if EV_PERIODIC_ENABLE 4182#if EV_PERIODIC_ENABLE
2695void noinline 4183ecb_noinline
4184void
2696ev_periodic_start (EV_P_ ev_periodic *w) 4185ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
2697{ 4186{
2698 if (expect_false (ev_is_active (w))) 4187 if (ecb_expect_false (ev_is_active (w)))
2699 return; 4188 return;
2700 4189
2701 if (w->reschedule_cb) 4190 if (w->reschedule_cb)
2702 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4191 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2703 else if (w->interval) 4192 else if (w->interval)
2704 { 4193 {
2705 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 4194 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2706 /* this formula differs from the one in periodic_reify because we do not always round up */ 4195 periodic_recalc (EV_A_ w);
2707 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2708 } 4196 }
2709 else 4197 else
2710 ev_at (w) = w->offset; 4198 ev_at (w) = w->offset;
2711 4199
2712 EV_FREQUENT_CHECK; 4200 EV_FREQUENT_CHECK;
2713 4201
2714 ++periodiccnt; 4202 ++periodiccnt;
2715 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4203 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2716 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4204 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
2717 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4205 ANHE_w (periodics [ev_active (w)]) = (WT)w;
2718 ANHE_at_cache (periodics [ev_active (w)]); 4206 ANHE_at_cache (periodics [ev_active (w)]);
2719 upheap (periodics, ev_active (w)); 4207 upheap (periodics, ev_active (w));
2720 4208
2721 EV_FREQUENT_CHECK; 4209 EV_FREQUENT_CHECK;
2722 4210
2723 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4211 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2724} 4212}
2725 4213
2726void noinline 4214ecb_noinline
4215void
2727ev_periodic_stop (EV_P_ ev_periodic *w) 4216ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
2728{ 4217{
2729 clear_pending (EV_A_ (W)w); 4218 clear_pending (EV_A_ (W)w);
2730 if (expect_false (!ev_is_active (w))) 4219 if (ecb_expect_false (!ev_is_active (w)))
2731 return; 4220 return;
2732 4221
2733 EV_FREQUENT_CHECK; 4222 EV_FREQUENT_CHECK;
2734 4223
2735 { 4224 {
… …
2737 4226
2738 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 4227 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2739 4228
2740 --periodiccnt; 4229 --periodiccnt;
2741 4230
2742 if (expect_true (active < periodiccnt + HEAP0)) 4231 if (ecb_expect_true (active < periodiccnt + HEAP0))
2743 { 4232 {
2744 periodics [active] = periodics [periodiccnt + HEAP0]; 4233 periodics [active] = periodics [periodiccnt + HEAP0];
2745 adjustheap (periodics, periodiccnt, active); 4234 adjustheap (periodics, periodiccnt, active);
2746 } 4235 }
2747 } 4236 }
… …
2749 ev_stop (EV_A_ (W)w); 4238 ev_stop (EV_A_ (W)w);
2750 4239
2751 EV_FREQUENT_CHECK; 4240 EV_FREQUENT_CHECK;
2752} 4241}
2753 4242
2754void noinline 4243ecb_noinline
4244void
2755ev_periodic_again (EV_P_ ev_periodic *w) 4245ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
2756{ 4246{
2757 /* TODO: use adjustheap and recalculation */ 4247 /* TODO: use adjustheap and recalculation */
2758 ev_periodic_stop (EV_A_ w); 4248 ev_periodic_stop (EV_A_ w);
2759 ev_periodic_start (EV_A_ w); 4249 ev_periodic_start (EV_A_ w);
2760} 4250}
… …
2764# define SA_RESTART 0 4254# define SA_RESTART 0
2765#endif 4255#endif
2766 4256
2767#if EV_SIGNAL_ENABLE 4257#if EV_SIGNAL_ENABLE
2768 4258
2769void noinline 4259ecb_noinline
4260void
2770ev_signal_start (EV_P_ ev_signal *w) 4261ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
2771{ 4262{
2772 if (expect_false (ev_is_active (w))) 4263 if (ecb_expect_false (ev_is_active (w)))
2773 return; 4264 return;
2774 4265
2775 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4266 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2776 4267
2777#if EV_MULTIPLICITY 4268#if EV_MULTIPLICITY
2778 assert (("libev: a signal must not be attached to two different loops", 4269 assert (("libev: a signal must not be attached to two different loops",
2779 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4270 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2780 4271
2781 signals [w->signum - 1].loop = EV_A; 4272 signals [w->signum - 1].loop = EV_A;
4273 ECB_MEMORY_FENCE_RELEASE;
2782#endif 4274#endif
2783 4275
2784 EV_FREQUENT_CHECK; 4276 EV_FREQUENT_CHECK;
2785 4277
2786#if EV_USE_SIGNALFD 4278#if EV_USE_SIGNALFD
… …
2833 sa.sa_handler = ev_sighandler; 4325 sa.sa_handler = ev_sighandler;
2834 sigfillset (&sa.sa_mask); 4326 sigfillset (&sa.sa_mask);
2835 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 4327 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2836 sigaction (w->signum, &sa, 0); 4328 sigaction (w->signum, &sa, 0);
2837 4329
4330 if (origflags & EVFLAG_NOSIGMASK)
4331 {
2838 sigemptyset (&sa.sa_mask); 4332 sigemptyset (&sa.sa_mask);
2839 sigaddset (&sa.sa_mask, w->signum); 4333 sigaddset (&sa.sa_mask, w->signum);
2840 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 4334 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
4335 }
2841#endif 4336#endif
2842 } 4337 }
2843 4338
2844 EV_FREQUENT_CHECK; 4339 EV_FREQUENT_CHECK;
2845} 4340}
2846 4341
2847void noinline 4342ecb_noinline
4343void
2848ev_signal_stop (EV_P_ ev_signal *w) 4344ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
2849{ 4345{
2850 clear_pending (EV_A_ (W)w); 4346 clear_pending (EV_A_ (W)w);
2851 if (expect_false (!ev_is_active (w))) 4347 if (ecb_expect_false (!ev_is_active (w)))
2852 return; 4348 return;
2853 4349
2854 EV_FREQUENT_CHECK; 4350 EV_FREQUENT_CHECK;
2855 4351
2856 wlist_del (&signals [w->signum - 1].head, (WL)w); 4352 wlist_del (&signals [w->signum - 1].head, (WL)w);
… …
2884#endif 4380#endif
2885 4381
2886#if EV_CHILD_ENABLE 4382#if EV_CHILD_ENABLE
2887 4383
2888void 4384void
2889ev_child_start (EV_P_ ev_child *w) 4385ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
2890{ 4386{
2891#if EV_MULTIPLICITY 4387#if EV_MULTIPLICITY
2892 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4388 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2893#endif 4389#endif
2894 if (expect_false (ev_is_active (w))) 4390 if (ecb_expect_false (ev_is_active (w)))
2895 return; 4391 return;
2896 4392
2897 EV_FREQUENT_CHECK; 4393 EV_FREQUENT_CHECK;
2898 4394
2899 ev_start (EV_A_ (W)w, 1); 4395 ev_start (EV_A_ (W)w, 1);
… …
2901 4397
2902 EV_FREQUENT_CHECK; 4398 EV_FREQUENT_CHECK;
2903} 4399}
2904 4400
2905void 4401void
2906ev_child_stop (EV_P_ ev_child *w) 4402ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
2907{ 4403{
2908 clear_pending (EV_A_ (W)w); 4404 clear_pending (EV_A_ (W)w);
2909 if (expect_false (!ev_is_active (w))) 4405 if (ecb_expect_false (!ev_is_active (w)))
2910 return; 4406 return;
2911 4407
2912 EV_FREQUENT_CHECK; 4408 EV_FREQUENT_CHECK;
2913 4409
2914 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w); 4410 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
… …
2928 4424
2929#define DEF_STAT_INTERVAL 5.0074891 4425#define DEF_STAT_INTERVAL 5.0074891
2930#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4426#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2931#define MIN_STAT_INTERVAL 0.1074891 4427#define MIN_STAT_INTERVAL 0.1074891
2932 4428
2933static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4429ecb_noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2934 4430
2935#if EV_USE_INOTIFY 4431#if EV_USE_INOTIFY
2936 4432
2937/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ 4433/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
2938# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4434# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2939 4435
2940static void noinline 4436ecb_noinline
4437static void
2941infy_add (EV_P_ ev_stat *w) 4438infy_add (EV_P_ ev_stat *w)
2942{ 4439{
2943 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); 4440 w->wd = inotify_add_watch (fs_fd, w->path,
4441 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4442 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4443 | IN_DONT_FOLLOW | IN_MASK_ADD);
2944 4444
2945 if (w->wd >= 0) 4445 if (w->wd >= 0)
2946 { 4446 {
2947 struct statfs sfs; 4447 struct statfs sfs;
2948 4448
… …
2952 4452
2953 if (!fs_2625) 4453 if (!fs_2625)
2954 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4454 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2955 else if (!statfs (w->path, &sfs) 4455 else if (!statfs (w->path, &sfs)
2956 && (sfs.f_type == 0x1373 /* devfs */ 4456 && (sfs.f_type == 0x1373 /* devfs */
4457 || sfs.f_type == 0x4006 /* fat */
4458 || sfs.f_type == 0x4d44 /* msdos */
2957 || sfs.f_type == 0xEF53 /* ext2/3 */ 4459 || sfs.f_type == 0xEF53 /* ext2/3 */
4460 || sfs.f_type == 0x72b6 /* jffs2 */
4461 || sfs.f_type == 0x858458f6 /* ramfs */
4462 || sfs.f_type == 0x5346544e /* ntfs */
2958 || sfs.f_type == 0x3153464a /* jfs */ 4463 || sfs.f_type == 0x3153464a /* jfs */
4464 || sfs.f_type == 0x9123683e /* btrfs */
2959 || sfs.f_type == 0x52654973 /* reiser3 */ 4465 || sfs.f_type == 0x52654973 /* reiser3 */
2960 || sfs.f_type == 0x01021994 /* tempfs */ 4466 || sfs.f_type == 0x01021994 /* tmpfs */
2961 || sfs.f_type == 0x58465342 /* xfs */)) 4467 || sfs.f_type == 0x58465342 /* xfs */))
2962 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4468 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
2963 else 4469 else
2964 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4470 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2965 } 4471 }
… …
2986 if (!pend || pend == path) 4492 if (!pend || pend == path)
2987 break; 4493 break;
2988 4494
2989 *pend = 0; 4495 *pend = 0;
2990 w->wd = inotify_add_watch (fs_fd, path, mask); 4496 w->wd = inotify_add_watch (fs_fd, path, mask);
2991 } 4497 }
2992 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 4498 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2993 } 4499 }
2994 } 4500 }
2995 4501
2996 if (w->wd >= 0) 4502 if (w->wd >= 0)
… …
3000 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4506 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3001 ev_timer_again (EV_A_ &w->timer); 4507 ev_timer_again (EV_A_ &w->timer);
3002 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4508 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3003} 4509}
3004 4510
3005static void noinline 4511ecb_noinline
4512static void
3006infy_del (EV_P_ ev_stat *w) 4513infy_del (EV_P_ ev_stat *w)
3007{ 4514{
3008 int slot; 4515 int slot;
3009 int wd = w->wd; 4516 int wd = w->wd;
3010 4517
… …
3017 4524
3018 /* remove this watcher, if others are watching it, they will rearm */ 4525 /* remove this watcher, if others are watching it, they will rearm */
3019 inotify_rm_watch (fs_fd, wd); 4526 inotify_rm_watch (fs_fd, wd);
3020} 4527}
3021 4528
3022static void noinline 4529ecb_noinline
4530static void
3023infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4531infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
3024{ 4532{
3025 if (slot < 0) 4533 if (slot < 0)
3026 /* overflow, need to check for all hash slots */ 4534 /* overflow, need to check for all hash slots */
3027 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4535 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
3063 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4571 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3064 ofs += sizeof (struct inotify_event) + ev->len; 4572 ofs += sizeof (struct inotify_event) + ev->len;
3065 } 4573 }
3066} 4574}
3067 4575
3068inline_size unsigned int
3069ev_linux_version (void)
3070{
3071 struct utsname buf;
3072 unsigned int v;
3073 int i;
3074 char *p = buf.release;
3075
3076 if (uname (&buf))
3077 return 0;
3078
3079 for (i = 3+1; --i; )
3080 {
3081 unsigned int c = 0;
3082
3083 for (;;)
3084 {
3085 if (*p >= '0' && *p <= '9')
3086 c = c * 10 + *p++ - '0';
3087 else
3088 {
3089 p += *p == '.';
3090 break;
3091 }
3092 }
3093
3094 v = (v << 8) | c;
3095 }
3096
3097 return v;
3098}
3099
3100inline_size void 4576inline_size ecb_cold
4577void
3101ev_check_2625 (EV_P) 4578ev_check_2625 (EV_P)
3102{ 4579{
3103 /* kernels < 2.6.25 are borked 4580 /* kernels < 2.6.25 are borked
3104 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4581 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3105 */ 4582 */
… …
3110} 4587}
3111 4588
3112inline_size int 4589inline_size int
3113infy_newfd (void) 4590infy_newfd (void)
3114{ 4591{
3115#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4592#if defined IN_CLOEXEC && defined IN_NONBLOCK
3116 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4593 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3117 if (fd >= 0) 4594 if (fd >= 0)
3118 return fd; 4595 return fd;
3119#endif 4596#endif
3120 return inotify_init (); 4597 return inotify_init ();
… …
3195#else 4672#else
3196# define EV_LSTAT(p,b) lstat (p, b) 4673# define EV_LSTAT(p,b) lstat (p, b)
3197#endif 4674#endif
3198 4675
3199void 4676void
3200ev_stat_stat (EV_P_ ev_stat *w) 4677ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
3201{ 4678{
3202 if (lstat (w->path, &w->attr) < 0) 4679 if (lstat (w->path, &w->attr) < 0)
3203 w->attr.st_nlink = 0; 4680 w->attr.st_nlink = 0;
3204 else if (!w->attr.st_nlink) 4681 else if (!w->attr.st_nlink)
3205 w->attr.st_nlink = 1; 4682 w->attr.st_nlink = 1;
3206} 4683}
3207 4684
3208static void noinline 4685ecb_noinline
4686static void
3209stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4687stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3210{ 4688{
3211 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4689 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3212 4690
3213 ev_statdata prev = w->attr; 4691 ev_statdata prev = w->attr;
… …
3244 ev_feed_event (EV_A_ w, EV_STAT); 4722 ev_feed_event (EV_A_ w, EV_STAT);
3245 } 4723 }
3246} 4724}
3247 4725
3248void 4726void
3249ev_stat_start (EV_P_ ev_stat *w) 4727ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
3250{ 4728{
3251 if (expect_false (ev_is_active (w))) 4729 if (ecb_expect_false (ev_is_active (w)))
3252 return; 4730 return;
3253 4731
3254 ev_stat_stat (EV_A_ w); 4732 ev_stat_stat (EV_A_ w);
3255 4733
3256 if (w->interval < MIN_STAT_INTERVAL && w->interval) 4734 if (w->interval < MIN_STAT_INTERVAL && w->interval)
… …
3275 4753
3276 EV_FREQUENT_CHECK; 4754 EV_FREQUENT_CHECK;
3277} 4755}
3278 4756
3279void 4757void
3280ev_stat_stop (EV_P_ ev_stat *w) 4758ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
3281{ 4759{
3282 clear_pending (EV_A_ (W)w); 4760 clear_pending (EV_A_ (W)w);
3283 if (expect_false (!ev_is_active (w))) 4761 if (ecb_expect_false (!ev_is_active (w)))
3284 return; 4762 return;
3285 4763
3286 EV_FREQUENT_CHECK; 4764 EV_FREQUENT_CHECK;
3287 4765
3288#if EV_USE_INOTIFY 4766#if EV_USE_INOTIFY
… …
3301} 4779}
3302#endif 4780#endif
3303 4781
3304#if EV_IDLE_ENABLE 4782#if EV_IDLE_ENABLE
3305void 4783void
3306ev_idle_start (EV_P_ ev_idle *w) 4784ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
3307{ 4785{
3308 if (expect_false (ev_is_active (w))) 4786 if (ecb_expect_false (ev_is_active (w)))
3309 return; 4787 return;
3310 4788
3311 pri_adjust (EV_A_ (W)w); 4789 pri_adjust (EV_A_ (W)w);
3312 4790
3313 EV_FREQUENT_CHECK; 4791 EV_FREQUENT_CHECK;
… …
3316 int active = ++idlecnt [ABSPRI (w)]; 4794 int active = ++idlecnt [ABSPRI (w)];
3317 4795
3318 ++idleall; 4796 ++idleall;
3319 ev_start (EV_A_ (W)w, active); 4797 ev_start (EV_A_ (W)w, active);
3320 4798
3321 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 4799 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
3322 idles [ABSPRI (w)][active - 1] = w; 4800 idles [ABSPRI (w)][active - 1] = w;
3323 } 4801 }
3324 4802
3325 EV_FREQUENT_CHECK; 4803 EV_FREQUENT_CHECK;
3326} 4804}
3327 4805
3328void 4806void
3329ev_idle_stop (EV_P_ ev_idle *w) 4807ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
3330{ 4808{
3331 clear_pending (EV_A_ (W)w); 4809 clear_pending (EV_A_ (W)w);
3332 if (expect_false (!ev_is_active (w))) 4810 if (ecb_expect_false (!ev_is_active (w)))
3333 return; 4811 return;
3334 4812
3335 EV_FREQUENT_CHECK; 4813 EV_FREQUENT_CHECK;
3336 4814
3337 { 4815 {
… …
3348} 4826}
3349#endif 4827#endif
3350 4828
3351#if EV_PREPARE_ENABLE 4829#if EV_PREPARE_ENABLE
3352void 4830void
3353ev_prepare_start (EV_P_ ev_prepare *w) 4831ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
3354{ 4832{
3355 if (expect_false (ev_is_active (w))) 4833 if (ecb_expect_false (ev_is_active (w)))
3356 return; 4834 return;
3357 4835
3358 EV_FREQUENT_CHECK; 4836 EV_FREQUENT_CHECK;
3359 4837
3360 ev_start (EV_A_ (W)w, ++preparecnt); 4838 ev_start (EV_A_ (W)w, ++preparecnt);
3361 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4839 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
3362 prepares [preparecnt - 1] = w; 4840 prepares [preparecnt - 1] = w;
3363 4841
3364 EV_FREQUENT_CHECK; 4842 EV_FREQUENT_CHECK;
3365} 4843}
3366 4844
3367void 4845void
3368ev_prepare_stop (EV_P_ ev_prepare *w) 4846ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
3369{ 4847{
3370 clear_pending (EV_A_ (W)w); 4848 clear_pending (EV_A_ (W)w);
3371 if (expect_false (!ev_is_active (w))) 4849 if (ecb_expect_false (!ev_is_active (w)))
3372 return; 4850 return;
3373 4851
3374 EV_FREQUENT_CHECK; 4852 EV_FREQUENT_CHECK;
3375 4853
3376 { 4854 {
… …
3386} 4864}
3387#endif 4865#endif
3388 4866
3389#if EV_CHECK_ENABLE 4867#if EV_CHECK_ENABLE
3390void 4868void
3391ev_check_start (EV_P_ ev_check *w) 4869ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
3392{ 4870{
3393 if (expect_false (ev_is_active (w))) 4871 if (ecb_expect_false (ev_is_active (w)))
3394 return; 4872 return;
3395 4873
3396 EV_FREQUENT_CHECK; 4874 EV_FREQUENT_CHECK;
3397 4875
3398 ev_start (EV_A_ (W)w, ++checkcnt); 4876 ev_start (EV_A_ (W)w, ++checkcnt);
3399 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 4877 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
3400 checks [checkcnt - 1] = w; 4878 checks [checkcnt - 1] = w;
3401 4879
3402 EV_FREQUENT_CHECK; 4880 EV_FREQUENT_CHECK;
3403} 4881}
3404 4882
3405void 4883void
3406ev_check_stop (EV_P_ ev_check *w) 4884ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
3407{ 4885{
3408 clear_pending (EV_A_ (W)w); 4886 clear_pending (EV_A_ (W)w);
3409 if (expect_false (!ev_is_active (w))) 4887 if (ecb_expect_false (!ev_is_active (w)))
3410 return; 4888 return;
3411 4889
3412 EV_FREQUENT_CHECK; 4890 EV_FREQUENT_CHECK;
3413 4891
3414 { 4892 {
… …
3423 EV_FREQUENT_CHECK; 4901 EV_FREQUENT_CHECK;
3424} 4902}
3425#endif 4903#endif
3426 4904
3427#if EV_EMBED_ENABLE 4905#if EV_EMBED_ENABLE
3428void noinline 4906ecb_noinline
4907void
3429ev_embed_sweep (EV_P_ ev_embed *w) 4908ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
3430{ 4909{
3431 ev_loop (w->other, EVLOOP_NONBLOCK); 4910 ev_run (w->other, EVRUN_NOWAIT);
3432} 4911}
3433 4912
3434static void 4913static void
3435embed_io_cb (EV_P_ ev_io *io, int revents) 4914embed_io_cb (EV_P_ ev_io *io, int revents)
3436{ 4915{
3437 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4916 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3438 4917
3439 if (ev_cb (w)) 4918 if (ev_cb (w))
3440 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4919 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3441 else 4920 else
3442 ev_loop (w->other, EVLOOP_NONBLOCK); 4921 ev_run (w->other, EVRUN_NOWAIT);
3443} 4922}
3444 4923
3445static void 4924static void
3446embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4925embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3447{ 4926{
… …
3451 EV_P = w->other; 4930 EV_P = w->other;
3452 4931
3453 while (fdchangecnt) 4932 while (fdchangecnt)
3454 { 4933 {
3455 fd_reify (EV_A); 4934 fd_reify (EV_A);
3456 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4935 ev_run (EV_A_ EVRUN_NOWAIT);
3457 } 4936 }
3458 } 4937 }
3459} 4938}
3460 4939
3461static void 4940static void
… …
3467 4946
3468 { 4947 {
3469 EV_P = w->other; 4948 EV_P = w->other;
3470 4949
3471 ev_loop_fork (EV_A); 4950 ev_loop_fork (EV_A);
3472 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4951 ev_run (EV_A_ EVRUN_NOWAIT);
3473 } 4952 }
3474 4953
3475 ev_embed_start (EV_A_ w); 4954 ev_embed_start (EV_A_ w);
3476} 4955}
3477 4956
… …
3482 ev_idle_stop (EV_A_ idle); 4961 ev_idle_stop (EV_A_ idle);
3483} 4962}
3484#endif 4963#endif
3485 4964
3486void 4965void
3487ev_embed_start (EV_P_ ev_embed *w) 4966ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
3488{ 4967{
3489 if (expect_false (ev_is_active (w))) 4968 if (ecb_expect_false (ev_is_active (w)))
3490 return; 4969 return;
3491 4970
3492 { 4971 {
3493 EV_P = w->other; 4972 EV_P = w->other;
3494 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4973 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
… …
3513 4992
3514 EV_FREQUENT_CHECK; 4993 EV_FREQUENT_CHECK;
3515} 4994}
3516 4995
3517void 4996void
3518ev_embed_stop (EV_P_ ev_embed *w) 4997ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
3519{ 4998{
3520 clear_pending (EV_A_ (W)w); 4999 clear_pending (EV_A_ (W)w);
3521 if (expect_false (!ev_is_active (w))) 5000 if (ecb_expect_false (!ev_is_active (w)))
3522 return; 5001 return;
3523 5002
3524 EV_FREQUENT_CHECK; 5003 EV_FREQUENT_CHECK;
3525 5004
3526 ev_io_stop (EV_A_ &w->io); 5005 ev_io_stop (EV_A_ &w->io);
… …
3533} 5012}
3534#endif 5013#endif
3535 5014
3536#if EV_FORK_ENABLE 5015#if EV_FORK_ENABLE
3537void 5016void
3538ev_fork_start (EV_P_ ev_fork *w) 5017ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
3539{ 5018{
3540 if (expect_false (ev_is_active (w))) 5019 if (ecb_expect_false (ev_is_active (w)))
3541 return; 5020 return;
3542 5021
3543 EV_FREQUENT_CHECK; 5022 EV_FREQUENT_CHECK;
3544 5023
3545 ev_start (EV_A_ (W)w, ++forkcnt); 5024 ev_start (EV_A_ (W)w, ++forkcnt);
3546 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 5025 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
3547 forks [forkcnt - 1] = w; 5026 forks [forkcnt - 1] = w;
3548 5027
3549 EV_FREQUENT_CHECK; 5028 EV_FREQUENT_CHECK;
3550} 5029}
3551 5030
3552void 5031void
3553ev_fork_stop (EV_P_ ev_fork *w) 5032ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
3554{ 5033{
3555 clear_pending (EV_A_ (W)w); 5034 clear_pending (EV_A_ (W)w);
3556 if (expect_false (!ev_is_active (w))) 5035 if (ecb_expect_false (!ev_is_active (w)))
3557 return; 5036 return;
3558 5037
3559 EV_FREQUENT_CHECK; 5038 EV_FREQUENT_CHECK;
3560 5039
3561 { 5040 {
… …
3569 5048
3570 EV_FREQUENT_CHECK; 5049 EV_FREQUENT_CHECK;
3571} 5050}
3572#endif 5051#endif
3573 5052
5053#if EV_CLEANUP_ENABLE
5054void
5055ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
5056{
5057 if (ecb_expect_false (ev_is_active (w)))
5058 return;
5059
5060 EV_FREQUENT_CHECK;
5061
5062 ev_start (EV_A_ (W)w, ++cleanupcnt);
5063 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
5064 cleanups [cleanupcnt - 1] = w;
5065
5066 /* cleanup watchers should never keep a refcount on the loop */
5067 ev_unref (EV_A);
5068 EV_FREQUENT_CHECK;
5069}
5070
5071void
5072ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
5073{
5074 clear_pending (EV_A_ (W)w);
5075 if (ecb_expect_false (!ev_is_active (w)))
5076 return;
5077
5078 EV_FREQUENT_CHECK;
5079 ev_ref (EV_A);
5080
5081 {
5082 int active = ev_active (w);
5083
5084 cleanups [active - 1] = cleanups [--cleanupcnt];
5085 ev_active (cleanups [active - 1]) = active;
5086 }
5087
5088 ev_stop (EV_A_ (W)w);
5089
5090 EV_FREQUENT_CHECK;
5091}
5092#endif
5093
3574#if EV_ASYNC_ENABLE 5094#if EV_ASYNC_ENABLE
3575void 5095void
3576ev_async_start (EV_P_ ev_async *w) 5096ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
3577{ 5097{
3578 if (expect_false (ev_is_active (w))) 5098 if (ecb_expect_false (ev_is_active (w)))
3579 return; 5099 return;
3580 5100
5101 w->sent = 0;
5102
3581 evpipe_init (EV_A); 5103 evpipe_init (EV_A);
3582 5104
3583 EV_FREQUENT_CHECK; 5105 EV_FREQUENT_CHECK;
3584 5106
3585 ev_start (EV_A_ (W)w, ++asynccnt); 5107 ev_start (EV_A_ (W)w, ++asynccnt);
3586 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 5108 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
3587 asyncs [asynccnt - 1] = w; 5109 asyncs [asynccnt - 1] = w;
3588 5110
3589 EV_FREQUENT_CHECK; 5111 EV_FREQUENT_CHECK;
3590} 5112}
3591 5113
3592void 5114void
3593ev_async_stop (EV_P_ ev_async *w) 5115ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
3594{ 5116{
3595 clear_pending (EV_A_ (W)w); 5117 clear_pending (EV_A_ (W)w);
3596 if (expect_false (!ev_is_active (w))) 5118 if (ecb_expect_false (!ev_is_active (w)))
3597 return; 5119 return;
3598 5120
3599 EV_FREQUENT_CHECK; 5121 EV_FREQUENT_CHECK;
3600 5122
3601 { 5123 {
… …
3609 5131
3610 EV_FREQUENT_CHECK; 5132 EV_FREQUENT_CHECK;
3611} 5133}
3612 5134
3613void 5135void
3614ev_async_send (EV_P_ ev_async *w) 5136ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
3615{ 5137{
3616 w->sent = 1; 5138 w->sent = 1;
3617 evpipe_write (EV_A_ &async_pending); 5139 evpipe_write (EV_A_ &async_pending);
3618} 5140}
3619#endif 5141#endif
… …
3656 5178
3657 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5179 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3658} 5180}
3659 5181
3660void 5182void
3661ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 5183ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
3662{ 5184{
3663 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5185 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3664
3665 if (expect_false (!once))
3666 {
3667 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3668 return;
3669 }
3670 5186
3671 once->cb = cb; 5187 once->cb = cb;
3672 once->arg = arg; 5188 once->arg = arg;
3673 5189
3674 ev_init (&once->io, once_cb_io); 5190 ev_init (&once->io, once_cb_io);
… …
3687} 5203}
3688 5204
3689/*****************************************************************************/ 5205/*****************************************************************************/
3690 5206
3691#if EV_WALK_ENABLE 5207#if EV_WALK_ENABLE
5208ecb_cold
3692void 5209void
3693ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 5210ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
3694{ 5211{
3695 int i, j; 5212 int i, j;
3696 ev_watcher_list *wl, *wn; 5213 ev_watcher_list *wl, *wn;
3697 5214
3698 if (types & (EV_IO | EV_EMBED)) 5215 if (types & (EV_IO | EV_EMBED))
… …
3741 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 5258 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3742#endif 5259#endif
3743 5260
3744#if EV_IDLE_ENABLE 5261#if EV_IDLE_ENABLE
3745 if (types & EV_IDLE) 5262 if (types & EV_IDLE)
3746 for (j = NUMPRI; i--; ) 5263 for (j = NUMPRI; j--; )
3747 for (i = idlecnt [j]; i--; ) 5264 for (i = idlecnt [j]; i--; )
3748 cb (EV_A_ EV_IDLE, idles [j][i]); 5265 cb (EV_A_ EV_IDLE, idles [j][i]);
3749#endif 5266#endif
3750 5267
3751#if EV_FORK_ENABLE 5268#if EV_FORK_ENABLE
… …
3804 5321
3805#if EV_MULTIPLICITY 5322#if EV_MULTIPLICITY
3806 #include "ev_wrap.h" 5323 #include "ev_wrap.h"
3807#endif 5324#endif
3808 5325
3809#ifdef __cplusplus
3810}
3811#endif
3812

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