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Comparing libev/ev.c (file contents):
Revision 1.371 by root, Mon Feb 7 21:45:32 2011 UTC vs.
Revision 1.501 by root, Mon Jul 1 21:47:42 2019 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009,2010,2011 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,
… …
43# include EV_CONFIG_H 43# include EV_CONFIG_H
44# else 44# else
45# include "config.h" 45# include "config.h"
46# endif 46# endif
47 47
48# if HAVE_FLOOR
49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1
51# endif
52# endif
53
48# if HAVE_CLOCK_SYSCALL 54# if HAVE_CLOCK_SYSCALL
49# ifndef EV_USE_CLOCK_SYSCALL 55# ifndef EV_USE_CLOCK_SYSCALL
50# define EV_USE_CLOCK_SYSCALL 1 56# define EV_USE_CLOCK_SYSCALL 1
51# ifndef EV_USE_REALTIME 57# ifndef EV_USE_REALTIME
52# define EV_USE_REALTIME 0 58# define EV_USE_REALTIME 0
53# endif 59# endif
54# ifndef EV_USE_MONOTONIC 60# ifndef EV_USE_MONOTONIC
55# define EV_USE_MONOTONIC 1 61# define EV_USE_MONOTONIC 1
56# endif 62# endif
57# endif 63# endif
58# elif !defined(EV_USE_CLOCK_SYSCALL) 64# elif !defined EV_USE_CLOCK_SYSCALL
59# define EV_USE_CLOCK_SYSCALL 0 65# define EV_USE_CLOCK_SYSCALL 0
60# endif 66# endif
61 67
62# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
63# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
… …
107# define EV_USE_EPOLL EV_FEATURE_BACKENDS 113# define EV_USE_EPOLL EV_FEATURE_BACKENDS
108# endif 114# endif
109# else 115# else
110# undef EV_USE_EPOLL 116# undef EV_USE_EPOLL
111# 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
112# endif 127# endif
113 128
114# if HAVE_KQUEUE && HAVE_SYS_EVENT_H 129# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
115# ifndef EV_USE_KQUEUE 130# ifndef EV_USE_KQUEUE
116# define EV_USE_KQUEUE EV_FEATURE_BACKENDS 131# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
… …
156# define EV_USE_EVENTFD 0 171# define EV_USE_EVENTFD 0
157# endif 172# endif
158 173
159#endif 174#endif
160 175
161#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
162#include <stdlib.h> 186#include <stdlib.h>
163#include <string.h> 187#include <string.h>
164#include <fcntl.h> 188#include <fcntl.h>
165#include <stddef.h> 189#include <stddef.h>
166 190
… …
178# include EV_H 202# include EV_H
179#else 203#else
180# include "ev.h" 204# include "ev.h"
181#endif 205#endif
182 206
183EV_CPP(extern "C" {) 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
216#endif
184 217
185#ifndef _WIN32 218#ifndef _WIN32
186# include <sys/time.h> 219# include <sys/time.h>
187# include <sys/wait.h> 220# include <sys/wait.h>
188# include <unistd.h> 221# include <unistd.h>
189#else 222#else
190# include <io.h> 223# include <io.h>
191# define WIN32_LEAN_AND_MEAN 224# define WIN32_LEAN_AND_MEAN
225# include <winsock2.h>
192# include <windows.h> 226# include <windows.h>
193# ifndef EV_SELECT_IS_WINSOCKET 227# ifndef EV_SELECT_IS_WINSOCKET
194# define EV_SELECT_IS_WINSOCKET 1 228# define EV_SELECT_IS_WINSOCKET 1
195# endif 229# endif
196# undef EV_AVOID_STDIO 230# undef EV_AVOID_STDIO
197#endif 231#endif
198 232
199/* OS X, in its infinite idiocy, actually HARDCODES
200 * a limit of 1024 into their select. Where people have brains,
201 * OS X engineers apparently have a vacuum. Or maybe they were
202 * ordered to have a vacuum, or they do anything for money.
203 * This might help. Or not.
204 */
205#define _DARWIN_UNLIMITED_SELECT 1
206
207/* 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 */
208 234
209/* try to deduce the maximum number of signals on this platform */ 235/* try to deduce the maximum number of signals on this platform */
210#if defined (EV_NSIG) 236#if defined EV_NSIG
211/* use what's provided */ 237/* use what's provided */
212#elif defined (NSIG) 238#elif defined NSIG
213# define EV_NSIG (NSIG) 239# define EV_NSIG (NSIG)
214#elif defined(_NSIG) 240#elif defined _NSIG
215# define EV_NSIG (_NSIG) 241# define EV_NSIG (_NSIG)
216#elif defined (SIGMAX) 242#elif defined SIGMAX
217# define EV_NSIG (SIGMAX+1) 243# define EV_NSIG (SIGMAX+1)
218#elif defined (SIG_MAX) 244#elif defined SIG_MAX
219# define EV_NSIG (SIG_MAX+1) 245# define EV_NSIG (SIG_MAX+1)
220#elif defined (_SIG_MAX) 246#elif defined _SIG_MAX
221# define EV_NSIG (_SIG_MAX+1) 247# define EV_NSIG (_SIG_MAX+1)
222#elif defined (MAXSIG) 248#elif defined MAXSIG
223# define EV_NSIG (MAXSIG+1) 249# define EV_NSIG (MAXSIG+1)
224#elif defined (MAX_SIG) 250#elif defined MAX_SIG
225# define EV_NSIG (MAX_SIG+1) 251# define EV_NSIG (MAX_SIG+1)
226#elif defined (SIGARRAYSIZE) 252#elif defined SIGARRAYSIZE
227# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ 253# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
228#elif defined (_sys_nsig) 254#elif defined _sys_nsig
229# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 255# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
230#else 256#else
231# error "unable to find value for NSIG, please report" 257# define EV_NSIG (8 * sizeof (sigset_t) + 1)
232/* to make it compile regardless, just remove the above line, */ 258#endif
233/* but consider reporting it, too! :) */ 259
234# define EV_NSIG 65 260#ifndef EV_USE_FLOOR
261# define EV_USE_FLOOR 0
235#endif 262#endif
236 263
237#ifndef EV_USE_CLOCK_SYSCALL 264#ifndef EV_USE_CLOCK_SYSCALL
238# if __linux && __GLIBC__ >= 2 265# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
239# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS 266# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
240# else 267# else
241# define EV_USE_CLOCK_SYSCALL 0 268# define EV_USE_CLOCK_SYSCALL 0
242# endif 269# endif
243#endif 270#endif
244 271
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
245#ifndef EV_USE_MONOTONIC 281#ifndef EV_USE_MONOTONIC
246# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 282# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
247# define EV_USE_MONOTONIC EV_FEATURE_OS 283# define EV_USE_MONOTONIC EV_FEATURE_OS
248# else 284# else
249# define EV_USE_MONOTONIC 0 285# define EV_USE_MONOTONIC 0
250# endif 286# endif
251#endif 287#endif
… …
288 324
289#ifndef EV_USE_PORT 325#ifndef EV_USE_PORT
290# define EV_USE_PORT 0 326# define EV_USE_PORT 0
291#endif 327#endif
292 328
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
293#ifndef EV_USE_INOTIFY 345#ifndef EV_USE_INOTIFY
294# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 346# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
295# define EV_USE_INOTIFY EV_FEATURE_OS 347# define EV_USE_INOTIFY EV_FEATURE_OS
296# else 348# else
297# define EV_USE_INOTIFY 0 349# define EV_USE_INOTIFY 0
… …
338 390
339#ifndef EV_HEAP_CACHE_AT 391#ifndef EV_HEAP_CACHE_AT
340# define EV_HEAP_CACHE_AT EV_FEATURE_DATA 392# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
341#endif 393#endif
342 394
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
343/* 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, */
344/* which makes programs even slower. might work on other unices, too. */ 412/* which makes programs even slower. might work on other unices, too. */
345#if EV_USE_CLOCK_SYSCALL 413#if EV_USE_CLOCK_SYSCALL
346# include <syscall.h> 414# include <sys/syscall.h>
347# ifdef SYS_clock_gettime 415# ifdef SYS_clock_gettime
348# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 416# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
349# undef EV_USE_MONOTONIC 417# undef EV_USE_MONOTONIC
350# define EV_USE_MONOTONIC 1 418# define EV_USE_MONOTONIC 1
419# define EV_NEED_SYSCALL 1
351# else 420# else
352# undef EV_USE_CLOCK_SYSCALL 421# undef EV_USE_CLOCK_SYSCALL
353# define EV_USE_CLOCK_SYSCALL 0 422# define EV_USE_CLOCK_SYSCALL 0
354# endif 423# endif
355#endif 424#endif
356 425
357/* 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 */
358 427
359#ifdef _AIX
360/* AIX has a completely broken poll.h header */
361# undef EV_USE_POLL
362# define EV_USE_POLL 0
363#endif
364
365#ifndef CLOCK_MONOTONIC 428#ifndef CLOCK_MONOTONIC
366# undef EV_USE_MONOTONIC 429# undef EV_USE_MONOTONIC
367# define EV_USE_MONOTONIC 0 430# define EV_USE_MONOTONIC 0
368#endif 431#endif
369 432
… …
377# define EV_USE_INOTIFY 0 440# define EV_USE_INOTIFY 0
378#endif 441#endif
379 442
380#if !EV_USE_NANOSLEEP 443#if !EV_USE_NANOSLEEP
381/* hp-ux has it in sys/time.h, which we unconditionally include above */ 444/* hp-ux has it in sys/time.h, which we unconditionally include above */
382# if !defined(_WIN32) && !defined(__hpux) 445# if !defined _WIN32 && !defined __hpux
383# include <sys/select.h> 446# include <sys/select.h>
447# endif
448#endif
449
450#if EV_USE_LINUXAIO
451# include <sys/syscall.h>
452# if !SYS_io_getevents || !EV_USE_EPOLL /* ev_linxaio uses ev_poll.c:ev_epoll_create */
453# undef EV_USE_LINUXAIO
454# define EV_USE_LINUXAIO 0
455# else
456# define EV_NEED_SYSCALL 1
457# endif
458#endif
459
460#if EV_USE_IOURING
461# include <sys/syscall.h>
462# if !__alpha && !SYS_io_uring_setup
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
468# define EV_NEED_SYSCALL 1
469# else
470# undef EV_USE_IOURING
471# define EV_USE_IOURING 0
384# endif 472# endif
385#endif 473#endif
386 474
387#if EV_USE_INOTIFY 475#if EV_USE_INOTIFY
388# include <sys/statfs.h> 476# include <sys/statfs.h>
… …
390/* 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 */
391# ifndef IN_DONT_FOLLOW 479# ifndef IN_DONT_FOLLOW
392# undef EV_USE_INOTIFY 480# undef EV_USE_INOTIFY
393# define EV_USE_INOTIFY 0 481# define EV_USE_INOTIFY 0
394# endif 482# endif
395#endif
396
397#if EV_SELECT_IS_WINSOCKET
398# include <winsock.h>
399#endif 483#endif
400 484
401#if EV_USE_EVENTFD 485#if EV_USE_EVENTFD
402/* 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 */
403# include <stdint.h> 487# include <stdint.h>
… …
434 uint32_t ssi_signo; 518 uint32_t ssi_signo;
435 char pad[128 - sizeof (uint32_t)]; 519 char pad[128 - sizeof (uint32_t)];
436}; 520};
437#endif 521#endif
438 522
439/**/ 523/*****************************************************************************/
524
525#if EV_NEED_SYSCALL
526
527#include <sys/syscall.h>
528
529/*
530 * define some syscall wrappers for common architectures
531 * this is mostly for nice looks during debugging, not performance.
532 * our syscalls return < 0, not == -1, on error. which is good
533 * enough for linux aio.
534 * TODO: arm is also common nowadays, maybe even mips and x86
535 * TODO: after implementing this, it suddenly looks like overkill, but its hard to remove...
536 */
537#if __GNUC__ && __linux && ECB_AMD64 && !defined __OPTIMIZE_SIZE__
538 /* the costly errno access probably kills this for size optimisation */
539
540 #define ev_syscall(nr,narg,arg1,arg2,arg3,arg4,arg5) \
541 ({ \
542 long res; \
543 register unsigned long r5 __asm__ ("r8" ); \
544 register unsigned long r4 __asm__ ("r10"); \
545 register unsigned long r3 __asm__ ("rdx"); \
546 register unsigned long r2 __asm__ ("rsi"); \
547 register unsigned long r1 __asm__ ("rdi"); \
548 if (narg >= 5) r5 = (unsigned long)(arg5); \
549 if (narg >= 4) r4 = (unsigned long)(arg4); \
550 if (narg >= 3) r3 = (unsigned long)(arg3); \
551 if (narg >= 2) r2 = (unsigned long)(arg2); \
552 if (narg >= 1) r1 = (unsigned long)(arg1); \
553 __asm__ __volatile__ ( \
554 "syscall\n\t" \
555 : "=a" (res) \
556 : "0" (nr), "r" (r1), "r" (r2), "r" (r3), "r" (r4), "r" (r5) \
557 : "cc", "r11", "cx", "memory"); \
558 errno = -res; \
559 res; \
560 })
561
562#endif
563
564#ifdef ev_syscall
565 #define ev_syscall0(nr) ev_syscall (nr, 0, 0, 0, 0, 0, 0
566 #define ev_syscall1(nr,arg1) ev_syscall (nr, 1, arg1, 0, 0, 0, 0)
567 #define ev_syscall2(nr,arg1,arg2) ev_syscall (nr, 2, arg1, arg2, 0, 0, 0)
568 #define ev_syscall3(nr,arg1,arg2,arg3) ev_syscall (nr, 3, arg1, arg2, arg3, 0, 0)
569 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) ev_syscall (nr, 3, arg1, arg2, arg3, arg4, 0)
570 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) ev_syscall (nr, 5, arg1, arg2, arg3, arg4, arg5)
571#else
572 #define ev_syscall0(nr) syscall (nr)
573 #define ev_syscall1(nr,arg1) syscall (nr, arg1)
574 #define ev_syscall2(nr,arg1,arg2) syscall (nr, arg1, arg2)
575 #define ev_syscall3(nr,arg1,arg2,arg3) syscall (nr, arg1, arg2, arg3)
576 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) syscall (nr, arg1, arg2, arg3, arg4)
577 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) syscall (nr, arg1, arg2, arg3, arg4, arg5)
578#endif
579
580#endif
581
582/*****************************************************************************/
440 583
441#if EV_VERIFY >= 3 584#if EV_VERIFY >= 3
442# define EV_FREQUENT_CHECK ev_verify (EV_A) 585# define EV_FREQUENT_CHECK ev_verify (EV_A)
443#else 586#else
444# define EV_FREQUENT_CHECK do { } while (0) 587# define EV_FREQUENT_CHECK do { } while (0)
445#endif 588#endif
446 589
447/* 590/*
448 * This is used to avoid floating point rounding problems. 591 * This is used to work around floating point rounding problems.
449 * It is added to ev_rt_now when scheduling periodics
450 * to ensure progress, time-wise, even when rounding
451 * errors are against us.
452 * This value is good at least till the year 4000. 592 * This value is good at least till the year 4000.
453 * Better solutions welcome.
454 */ 593 */
455#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 594#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
595/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
456 596
457#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 597#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
458#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 598#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
459 599
460#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0) 600#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
461#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0) 601#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
462 602
603/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
604/* ECB.H BEGIN */
605/*
606 * libecb - http://software.schmorp.de/pkg/libecb
607 *
608 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
609 * Copyright (©) 2011 Emanuele Giaquinta
610 * All rights reserved.
611 *
612 * Redistribution and use in source and binary forms, with or without modifica-
613 * tion, are permitted provided that the following conditions are met:
614 *
615 * 1. Redistributions of source code must retain the above copyright notice,
616 * this list of conditions and the following disclaimer.
617 *
618 * 2. Redistributions in binary form must reproduce the above copyright
619 * notice, this list of conditions and the following disclaimer in the
620 * documentation and/or other materials provided with the distribution.
621 *
622 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
623 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
624 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
625 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
626 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
627 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
628 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
629 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
630 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
631 * OF THE POSSIBILITY OF SUCH DAMAGE.
632 *
633 * Alternatively, the contents of this file may be used under the terms of
634 * the GNU General Public License ("GPL") version 2 or any later version,
635 * in which case the provisions of the GPL are applicable instead of
636 * the above. If you wish to allow the use of your version of this file
637 * only under the terms of the GPL and not to allow others to use your
638 * version of this file under the BSD license, indicate your decision
639 * by deleting the provisions above and replace them with the notice
640 * and other provisions required by the GPL. If you do not delete the
641 * provisions above, a recipient may use your version of this file under
642 * either the BSD or the GPL.
643 */
644
645#ifndef ECB_H
646#define ECB_H
647
648/* 16 bits major, 16 bits minor */
649#define ECB_VERSION 0x00010006
650
651#ifdef _WIN32
652 typedef signed char int8_t;
653 typedef unsigned char uint8_t;
654 typedef signed short int16_t;
655 typedef unsigned short uint16_t;
656 typedef signed int int32_t;
657 typedef unsigned int uint32_t;
463#if __GNUC__ >= 4 658 #if __GNUC__
659 typedef signed long long int64_t;
660 typedef unsigned long long uint64_t;
661 #else /* _MSC_VER || __BORLANDC__ */
662 typedef signed __int64 int64_t;
663 typedef unsigned __int64 uint64_t;
664 #endif
665 #ifdef _WIN64
666 #define ECB_PTRSIZE 8
667 typedef uint64_t uintptr_t;
668 typedef int64_t intptr_t;
669 #else
670 #define ECB_PTRSIZE 4
671 typedef uint32_t uintptr_t;
672 typedef int32_t intptr_t;
673 #endif
674#else
675 #include <inttypes.h>
676 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
677 #define ECB_PTRSIZE 8
678 #else
679 #define ECB_PTRSIZE 4
680 #endif
681#endif
682
683#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
684#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
685
686/* work around x32 idiocy by defining proper macros */
687#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
688 #if _ILP32
689 #define ECB_AMD64_X32 1
690 #else
691 #define ECB_AMD64 1
692 #endif
693#endif
694
695/* many compilers define _GNUC_ to some versions but then only implement
696 * what their idiot authors think are the "more important" extensions,
697 * causing enormous grief in return for some better fake benchmark numbers.
698 * or so.
699 * we try to detect these and simply assume they are not gcc - if they have
700 * an issue with that they should have done it right in the first place.
701 */
702#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
703 #define ECB_GCC_VERSION(major,minor) 0
704#else
705 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
706#endif
707
708#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
709
710#if __clang__ && defined __has_builtin
711 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
712#else
713 #define ECB_CLANG_BUILTIN(x) 0
714#endif
715
716#if __clang__ && defined __has_extension
717 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
718#else
719 #define ECB_CLANG_EXTENSION(x) 0
720#endif
721
722#define ECB_CPP (__cplusplus+0)
723#define ECB_CPP11 (__cplusplus >= 201103L)
724#define ECB_CPP14 (__cplusplus >= 201402L)
725#define ECB_CPP17 (__cplusplus >= 201703L)
726
727#if ECB_CPP
728 #define ECB_C 0
729 #define ECB_STDC_VERSION 0
730#else
731 #define ECB_C 1
732 #define ECB_STDC_VERSION __STDC_VERSION__
733#endif
734
735#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
736#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
737#define ECB_C17 (ECB_STDC_VERSION >= 201710L)
738
739#if ECB_CPP
740 #define ECB_EXTERN_C extern "C"
741 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
742 #define ECB_EXTERN_C_END }
743#else
744 #define ECB_EXTERN_C extern
745 #define ECB_EXTERN_C_BEG
746 #define ECB_EXTERN_C_END
747#endif
748
749/*****************************************************************************/
750
751/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
752/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
753
754#if ECB_NO_THREADS
755 #define ECB_NO_SMP 1
756#endif
757
758#if ECB_NO_SMP
759 #define ECB_MEMORY_FENCE do { } while (0)
760#endif
761
762/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
763#if __xlC__ && ECB_CPP
764 #include <builtins.h>
765#endif
766
767#if 1400 <= _MSC_VER
768 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
769#endif
770
771#ifndef ECB_MEMORY_FENCE
772 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
773 #define ECB_MEMORY_FENCE_RELAXED __asm__ __volatile__ ("" : : : "memory")
774 #if __i386 || __i386__
775 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
776 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
777 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
778 #elif ECB_GCC_AMD64
779 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
780 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
781 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
782 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
783 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
784 #elif defined __ARM_ARCH_2__ \
785 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
786 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
787 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
788 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
789 || defined __ARM_ARCH_5TEJ__
790 /* should not need any, unless running old code on newer cpu - arm doesn't support that */
791 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
792 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
793 || defined __ARM_ARCH_6T2__
794 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
795 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
796 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
797 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
798 #elif __aarch64__
799 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
800 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
801 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
802 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
803 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
804 #elif defined __s390__ || defined __s390x__
805 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
806 #elif defined __mips__
807 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
808 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
809 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
810 #elif defined __alpha__
811 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
812 #elif defined __hppa__
813 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
814 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
815 #elif defined __ia64__
816 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
817 #elif defined __m68k__
818 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
819 #elif defined __m88k__
820 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
821 #elif defined __sh__
822 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
823 #endif
824 #endif
825#endif
826
827#ifndef ECB_MEMORY_FENCE
828 #if ECB_GCC_VERSION(4,7)
829 /* see comment below (stdatomic.h) about the C11 memory model. */
830 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
831 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
832 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
833 #define ECB_MEMORY_FENCE_RELAXED __atomic_thread_fence (__ATOMIC_RELAXED)
834
835 #elif ECB_CLANG_EXTENSION(c_atomic)
836 /* see comment below (stdatomic.h) about the C11 memory model. */
837 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
838 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
839 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
840 #define ECB_MEMORY_FENCE_RELAXED __c11_atomic_thread_fence (__ATOMIC_RELAXED)
841
842 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
843 #define ECB_MEMORY_FENCE __sync_synchronize ()
844 #elif _MSC_VER >= 1500 /* VC++ 2008 */
845 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
846 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
847 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
848 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
849 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
850 #elif _MSC_VER >= 1400 /* VC++ 2005 */
851 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
852 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
853 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
854 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
855 #elif defined _WIN32
856 #include <WinNT.h>
857 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
858 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
859 #include <mbarrier.h>
860 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
861 #define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier ()
862 #define ECB_MEMORY_FENCE_RELEASE __machine_rel_barrier ()
863 #define ECB_MEMORY_FENCE_RELAXED __compiler_barrier ()
864 #elif __xlC__
865 #define ECB_MEMORY_FENCE __sync ()
866 #endif
867#endif
868
869#ifndef ECB_MEMORY_FENCE
870 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
871 /* we assume that these memory fences work on all variables/all memory accesses, */
872 /* not just C11 atomics and atomic accesses */
873 #include <stdatomic.h>
874 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
875 #define ECB_MEMORY_FENCE_ACQUIRE atomic_thread_fence (memory_order_acquire)
876 #define ECB_MEMORY_FENCE_RELEASE atomic_thread_fence (memory_order_release)
877 #endif
878#endif
879
880#ifndef ECB_MEMORY_FENCE
881 #if !ECB_AVOID_PTHREADS
882 /*
883 * if you get undefined symbol references to pthread_mutex_lock,
884 * or failure to find pthread.h, then you should implement
885 * the ECB_MEMORY_FENCE operations for your cpu/compiler
886 * OR provide pthread.h and link against the posix thread library
887 * of your system.
888 */
889 #include <pthread.h>
890 #define ECB_NEEDS_PTHREADS 1
891 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
892
893 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
894 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
895 #endif
896#endif
897
898#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
899 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
900#endif
901
902#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
903 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
904#endif
905
906#if !defined ECB_MEMORY_FENCE_RELAXED && defined ECB_MEMORY_FENCE
907 #define ECB_MEMORY_FENCE_RELAXED ECB_MEMORY_FENCE /* very heavy-handed */
908#endif
909
910/*****************************************************************************/
911
912#if ECB_CPP
913 #define ecb_inline static inline
914#elif ECB_GCC_VERSION(2,5)
915 #define ecb_inline static __inline__
916#elif ECB_C99
917 #define ecb_inline static inline
918#else
919 #define ecb_inline static
920#endif
921
922#if ECB_GCC_VERSION(3,3)
923 #define ecb_restrict __restrict__
924#elif ECB_C99
925 #define ecb_restrict restrict
926#else
927 #define ecb_restrict
928#endif
929
930typedef int ecb_bool;
931
932#define ECB_CONCAT_(a, b) a ## b
933#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
934#define ECB_STRINGIFY_(a) # a
935#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
936#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
937
938#define ecb_function_ ecb_inline
939
940#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
941 #define ecb_attribute(attrlist) __attribute__ (attrlist)
942#else
943 #define ecb_attribute(attrlist)
944#endif
945
946#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
947 #define ecb_is_constant(expr) __builtin_constant_p (expr)
948#else
949 /* possible C11 impl for integral types
950 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
951 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
952
953 #define ecb_is_constant(expr) 0
954#endif
955
956#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
464# define expect(expr,value) __builtin_expect ((expr),(value)) 957 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
465# define noinline __attribute__ ((noinline))
466#else 958#else
467# define expect(expr,value) (expr) 959 #define ecb_expect(expr,value) (expr)
468# define noinline
469# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
470# define inline
471# endif 960#endif
472#endif
473 961
962#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
963 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
964#else
965 #define ecb_prefetch(addr,rw,locality)
966#endif
967
968/* no emulation for ecb_decltype */
969#if ECB_CPP11
970 // older implementations might have problems with decltype(x)::type, work around it
971 template<class T> struct ecb_decltype_t { typedef T type; };
972 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
973#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
974 #define ecb_decltype(x) __typeof__ (x)
975#endif
976
977#if _MSC_VER >= 1300
978 #define ecb_deprecated __declspec (deprecated)
979#else
980 #define ecb_deprecated ecb_attribute ((__deprecated__))
981#endif
982
983#if _MSC_VER >= 1500
984 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
985#elif ECB_GCC_VERSION(4,5)
986 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
987#else
988 #define ecb_deprecated_message(msg) ecb_deprecated
989#endif
990
991#if _MSC_VER >= 1400
992 #define ecb_noinline __declspec (noinline)
993#else
994 #define ecb_noinline ecb_attribute ((__noinline__))
995#endif
996
997#define ecb_unused ecb_attribute ((__unused__))
998#define ecb_const ecb_attribute ((__const__))
999#define ecb_pure ecb_attribute ((__pure__))
1000
1001#if ECB_C11 || __IBMC_NORETURN
1002 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
1003 #define ecb_noreturn _Noreturn
1004#elif ECB_CPP11
1005 #define ecb_noreturn [[noreturn]]
1006#elif _MSC_VER >= 1200
1007 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
1008 #define ecb_noreturn __declspec (noreturn)
1009#else
1010 #define ecb_noreturn ecb_attribute ((__noreturn__))
1011#endif
1012
1013#if ECB_GCC_VERSION(4,3)
1014 #define ecb_artificial ecb_attribute ((__artificial__))
1015 #define ecb_hot ecb_attribute ((__hot__))
1016 #define ecb_cold ecb_attribute ((__cold__))
1017#else
1018 #define ecb_artificial
1019 #define ecb_hot
1020 #define ecb_cold
1021#endif
1022
1023/* put around conditional expressions if you are very sure that the */
1024/* expression is mostly true or mostly false. note that these return */
1025/* booleans, not the expression. */
474#define expect_false(expr) expect ((expr) != 0, 0) 1026#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
475#define expect_true(expr) expect ((expr) != 0, 1) 1027#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
1028/* for compatibility to the rest of the world */
1029#define ecb_likely(expr) ecb_expect_true (expr)
1030#define ecb_unlikely(expr) ecb_expect_false (expr)
1031
1032/* count trailing zero bits and count # of one bits */
1033#if ECB_GCC_VERSION(3,4) \
1034 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
1035 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
1036 && ECB_CLANG_BUILTIN(__builtin_popcount))
1037 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
1038 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
1039 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
1040 #define ecb_ctz32(x) __builtin_ctz (x)
1041 #define ecb_ctz64(x) __builtin_ctzll (x)
1042 #define ecb_popcount32(x) __builtin_popcount (x)
1043 /* no popcountll */
1044#else
1045 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
1046 ecb_function_ ecb_const int
1047 ecb_ctz32 (uint32_t x)
1048 {
1049#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1050 unsigned long r;
1051 _BitScanForward (&r, x);
1052 return (int)r;
1053#else
1054 int r = 0;
1055
1056 x &= ~x + 1; /* this isolates the lowest bit */
1057
1058#if ECB_branchless_on_i386
1059 r += !!(x & 0xaaaaaaaa) << 0;
1060 r += !!(x & 0xcccccccc) << 1;
1061 r += !!(x & 0xf0f0f0f0) << 2;
1062 r += !!(x & 0xff00ff00) << 3;
1063 r += !!(x & 0xffff0000) << 4;
1064#else
1065 if (x & 0xaaaaaaaa) r += 1;
1066 if (x & 0xcccccccc) r += 2;
1067 if (x & 0xf0f0f0f0) r += 4;
1068 if (x & 0xff00ff00) r += 8;
1069 if (x & 0xffff0000) r += 16;
1070#endif
1071
1072 return r;
1073#endif
1074 }
1075
1076 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
1077 ecb_function_ ecb_const int
1078 ecb_ctz64 (uint64_t x)
1079 {
1080#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1081 unsigned long r;
1082 _BitScanForward64 (&r, x);
1083 return (int)r;
1084#else
1085 int shift = x & 0xffffffff ? 0 : 32;
1086 return ecb_ctz32 (x >> shift) + shift;
1087#endif
1088 }
1089
1090 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
1091 ecb_function_ ecb_const int
1092 ecb_popcount32 (uint32_t x)
1093 {
1094 x -= (x >> 1) & 0x55555555;
1095 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
1096 x = ((x >> 4) + x) & 0x0f0f0f0f;
1097 x *= 0x01010101;
1098
1099 return x >> 24;
1100 }
1101
1102 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
1103 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
1104 {
1105#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1106 unsigned long r;
1107 _BitScanReverse (&r, x);
1108 return (int)r;
1109#else
1110 int r = 0;
1111
1112 if (x >> 16) { x >>= 16; r += 16; }
1113 if (x >> 8) { x >>= 8; r += 8; }
1114 if (x >> 4) { x >>= 4; r += 4; }
1115 if (x >> 2) { x >>= 2; r += 2; }
1116 if (x >> 1) { r += 1; }
1117
1118 return r;
1119#endif
1120 }
1121
1122 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
1123 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
1124 {
1125#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1126 unsigned long r;
1127 _BitScanReverse64 (&r, x);
1128 return (int)r;
1129#else
1130 int r = 0;
1131
1132 if (x >> 32) { x >>= 32; r += 32; }
1133
1134 return r + ecb_ld32 (x);
1135#endif
1136 }
1137#endif
1138
1139ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
1140ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
1141ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
1142ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
1143
1144ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
1145ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
1146{
1147 return ( (x * 0x0802U & 0x22110U)
1148 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
1149}
1150
1151ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
1152ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
1153{
1154 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
1155 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
1156 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
1157 x = ( x >> 8 ) | ( x << 8);
1158
1159 return x;
1160}
1161
1162ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
1163ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
1164{
1165 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
1166 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
1167 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
1168 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
1169 x = ( x >> 16 ) | ( x << 16);
1170
1171 return x;
1172}
1173
1174/* popcount64 is only available on 64 bit cpus as gcc builtin */
1175/* so for this version we are lazy */
1176ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
1177ecb_function_ ecb_const int
1178ecb_popcount64 (uint64_t x)
1179{
1180 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
1181}
1182
1183ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
1184ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
1185ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
1186ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
1187ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
1188ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
1189ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
1190ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
1191
1192ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
1193ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
1194ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
1195ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
1196ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
1197ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
1198ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
1199ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
1200
1201#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1202 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1203 #define ecb_bswap16(x) __builtin_bswap16 (x)
1204 #else
1205 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1206 #endif
1207 #define ecb_bswap32(x) __builtin_bswap32 (x)
1208 #define ecb_bswap64(x) __builtin_bswap64 (x)
1209#elif _MSC_VER
1210 #include <stdlib.h>
1211 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1212 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1213 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
1214#else
1215 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
1216 ecb_function_ ecb_const uint16_t
1217 ecb_bswap16 (uint16_t x)
1218 {
1219 return ecb_rotl16 (x, 8);
1220 }
1221
1222 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
1223 ecb_function_ ecb_const uint32_t
1224 ecb_bswap32 (uint32_t x)
1225 {
1226 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
1227 }
1228
1229 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
1230 ecb_function_ ecb_const uint64_t
1231 ecb_bswap64 (uint64_t x)
1232 {
1233 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
1234 }
1235#endif
1236
1237#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
1238 #define ecb_unreachable() __builtin_unreachable ()
1239#else
1240 /* this seems to work fine, but gcc always emits a warning for it :/ */
1241 ecb_inline ecb_noreturn void ecb_unreachable (void);
1242 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
1243#endif
1244
1245/* try to tell the compiler that some condition is definitely true */
1246#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
1247
1248ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
1249ecb_inline ecb_const uint32_t
1250ecb_byteorder_helper (void)
1251{
1252 /* the union code still generates code under pressure in gcc, */
1253 /* but less than using pointers, and always seems to */
1254 /* successfully return a constant. */
1255 /* the reason why we have this horrible preprocessor mess */
1256 /* is to avoid it in all cases, at least on common architectures */
1257 /* or when using a recent enough gcc version (>= 4.6) */
1258#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1259 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1260 #define ECB_LITTLE_ENDIAN 1
1261 return 0x44332211;
1262#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1263 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1264 #define ECB_BIG_ENDIAN 1
1265 return 0x11223344;
1266#else
1267 union
1268 {
1269 uint8_t c[4];
1270 uint32_t u;
1271 } u = { 0x11, 0x22, 0x33, 0x44 };
1272 return u.u;
1273#endif
1274}
1275
1276ecb_inline ecb_const ecb_bool ecb_big_endian (void);
1277ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
1278ecb_inline ecb_const ecb_bool ecb_little_endian (void);
1279ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
1280
1281#if ECB_GCC_VERSION(3,0) || ECB_C99
1282 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1283#else
1284 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1285#endif
1286
1287#if ECB_CPP
1288 template<typename T>
1289 static inline T ecb_div_rd (T val, T div)
1290 {
1291 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1292 }
1293 template<typename T>
1294 static inline T ecb_div_ru (T val, T div)
1295 {
1296 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1297 }
1298#else
1299 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1300 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1301#endif
1302
1303#if ecb_cplusplus_does_not_suck
1304 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1305 template<typename T, int N>
1306 static inline int ecb_array_length (const T (&arr)[N])
1307 {
1308 return N;
1309 }
1310#else
1311 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1312#endif
1313
1314ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1315ecb_function_ ecb_const uint32_t
1316ecb_binary16_to_binary32 (uint32_t x)
1317{
1318 unsigned int s = (x & 0x8000) << (31 - 15);
1319 int e = (x >> 10) & 0x001f;
1320 unsigned int m = x & 0x03ff;
1321
1322 if (ecb_expect_false (e == 31))
1323 /* infinity or NaN */
1324 e = 255 - (127 - 15);
1325 else if (ecb_expect_false (!e))
1326 {
1327 if (ecb_expect_true (!m))
1328 /* zero, handled by code below by forcing e to 0 */
1329 e = 0 - (127 - 15);
1330 else
1331 {
1332 /* subnormal, renormalise */
1333 unsigned int s = 10 - ecb_ld32 (m);
1334
1335 m = (m << s) & 0x3ff; /* mask implicit bit */
1336 e -= s - 1;
1337 }
1338 }
1339
1340 /* e and m now are normalised, or zero, (or inf or nan) */
1341 e += 127 - 15;
1342
1343 return s | (e << 23) | (m << (23 - 10));
1344}
1345
1346ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1347ecb_function_ ecb_const uint16_t
1348ecb_binary32_to_binary16 (uint32_t x)
1349{
1350 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1351 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1352 unsigned int m = x & 0x007fffff;
1353
1354 x &= 0x7fffffff;
1355
1356 /* if it's within range of binary16 normals, use fast path */
1357 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1358 {
1359 /* mantissa round-to-even */
1360 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1361
1362 /* handle overflow */
1363 if (ecb_expect_false (m >= 0x00800000))
1364 {
1365 m >>= 1;
1366 e += 1;
1367 }
1368
1369 return s | (e << 10) | (m >> (23 - 10));
1370 }
1371
1372 /* handle large numbers and infinity */
1373 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1374 return s | 0x7c00;
1375
1376 /* handle zero, subnormals and small numbers */
1377 if (ecb_expect_true (x < 0x38800000))
1378 {
1379 /* zero */
1380 if (ecb_expect_true (!x))
1381 return s;
1382
1383 /* handle subnormals */
1384
1385 /* too small, will be zero */
1386 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1387 return s;
1388
1389 m |= 0x00800000; /* make implicit bit explicit */
1390
1391 /* very tricky - we need to round to the nearest e (+10) bit value */
1392 {
1393 unsigned int bits = 14 - e;
1394 unsigned int half = (1 << (bits - 1)) - 1;
1395 unsigned int even = (m >> bits) & 1;
1396
1397 /* if this overflows, we will end up with a normalised number */
1398 m = (m + half + even) >> bits;
1399 }
1400
1401 return s | m;
1402 }
1403
1404 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1405 m >>= 13;
1406
1407 return s | 0x7c00 | m | !m;
1408}
1409
1410/*******************************************************************************/
1411/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1412
1413/* basically, everything uses "ieee pure-endian" floating point numbers */
1414/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1415#if 0 \
1416 || __i386 || __i386__ \
1417 || ECB_GCC_AMD64 \
1418 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1419 || defined __s390__ || defined __s390x__ \
1420 || defined __mips__ \
1421 || defined __alpha__ \
1422 || defined __hppa__ \
1423 || defined __ia64__ \
1424 || defined __m68k__ \
1425 || defined __m88k__ \
1426 || defined __sh__ \
1427 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1428 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1429 || defined __aarch64__
1430 #define ECB_STDFP 1
1431 #include <string.h> /* for memcpy */
1432#else
1433 #define ECB_STDFP 0
1434#endif
1435
1436#ifndef ECB_NO_LIBM
1437
1438 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1439
1440 /* only the oldest of old doesn't have this one. solaris. */
1441 #ifdef INFINITY
1442 #define ECB_INFINITY INFINITY
1443 #else
1444 #define ECB_INFINITY HUGE_VAL
1445 #endif
1446
1447 #ifdef NAN
1448 #define ECB_NAN NAN
1449 #else
1450 #define ECB_NAN ECB_INFINITY
1451 #endif
1452
1453 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1454 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1455 #define ecb_frexpf(x,e) frexpf ((x), (e))
1456 #else
1457 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1458 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1459 #endif
1460
1461 /* convert a float to ieee single/binary32 */
1462 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1463 ecb_function_ ecb_const uint32_t
1464 ecb_float_to_binary32 (float x)
1465 {
1466 uint32_t r;
1467
1468 #if ECB_STDFP
1469 memcpy (&r, &x, 4);
1470 #else
1471 /* slow emulation, works for anything but -0 */
1472 uint32_t m;
1473 int e;
1474
1475 if (x == 0e0f ) return 0x00000000U;
1476 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1477 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1478 if (x != x ) return 0x7fbfffffU;
1479
1480 m = ecb_frexpf (x, &e) * 0x1000000U;
1481
1482 r = m & 0x80000000U;
1483
1484 if (r)
1485 m = -m;
1486
1487 if (e <= -126)
1488 {
1489 m &= 0xffffffU;
1490 m >>= (-125 - e);
1491 e = -126;
1492 }
1493
1494 r |= (e + 126) << 23;
1495 r |= m & 0x7fffffU;
1496 #endif
1497
1498 return r;
1499 }
1500
1501 /* converts an ieee single/binary32 to a float */
1502 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1503 ecb_function_ ecb_const float
1504 ecb_binary32_to_float (uint32_t x)
1505 {
1506 float r;
1507
1508 #if ECB_STDFP
1509 memcpy (&r, &x, 4);
1510 #else
1511 /* emulation, only works for normals and subnormals and +0 */
1512 int neg = x >> 31;
1513 int e = (x >> 23) & 0xffU;
1514
1515 x &= 0x7fffffU;
1516
1517 if (e)
1518 x |= 0x800000U;
1519 else
1520 e = 1;
1521
1522 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1523 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1524
1525 r = neg ? -r : r;
1526 #endif
1527
1528 return r;
1529 }
1530
1531 /* convert a double to ieee double/binary64 */
1532 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1533 ecb_function_ ecb_const uint64_t
1534 ecb_double_to_binary64 (double x)
1535 {
1536 uint64_t r;
1537
1538 #if ECB_STDFP
1539 memcpy (&r, &x, 8);
1540 #else
1541 /* slow emulation, works for anything but -0 */
1542 uint64_t m;
1543 int e;
1544
1545 if (x == 0e0 ) return 0x0000000000000000U;
1546 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1547 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1548 if (x != x ) return 0X7ff7ffffffffffffU;
1549
1550 m = frexp (x, &e) * 0x20000000000000U;
1551
1552 r = m & 0x8000000000000000;;
1553
1554 if (r)
1555 m = -m;
1556
1557 if (e <= -1022)
1558 {
1559 m &= 0x1fffffffffffffU;
1560 m >>= (-1021 - e);
1561 e = -1022;
1562 }
1563
1564 r |= ((uint64_t)(e + 1022)) << 52;
1565 r |= m & 0xfffffffffffffU;
1566 #endif
1567
1568 return r;
1569 }
1570
1571 /* converts an ieee double/binary64 to a double */
1572 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1573 ecb_function_ ecb_const double
1574 ecb_binary64_to_double (uint64_t x)
1575 {
1576 double r;
1577
1578 #if ECB_STDFP
1579 memcpy (&r, &x, 8);
1580 #else
1581 /* emulation, only works for normals and subnormals and +0 */
1582 int neg = x >> 63;
1583 int e = (x >> 52) & 0x7ffU;
1584
1585 x &= 0xfffffffffffffU;
1586
1587 if (e)
1588 x |= 0x10000000000000U;
1589 else
1590 e = 1;
1591
1592 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1593 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1594
1595 r = neg ? -r : r;
1596 #endif
1597
1598 return r;
1599 }
1600
1601 /* convert a float to ieee half/binary16 */
1602 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1603 ecb_function_ ecb_const uint16_t
1604 ecb_float_to_binary16 (float x)
1605 {
1606 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1607 }
1608
1609 /* convert an ieee half/binary16 to float */
1610 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1611 ecb_function_ ecb_const float
1612 ecb_binary16_to_float (uint16_t x)
1613 {
1614 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1615 }
1616
1617#endif
1618
1619#endif
1620
1621/* ECB.H END */
1622
1623#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1624/* if your architecture doesn't need memory fences, e.g. because it is
1625 * single-cpu/core, or if you use libev in a project that doesn't use libev
1626 * from multiple threads, then you can define ECB_NO_THREADS when compiling
1627 * libev, in which cases the memory fences become nops.
1628 * alternatively, you can remove this #error and link against libpthread,
1629 * which will then provide the memory fences.
1630 */
1631# error "memory fences not defined for your architecture, please report"
1632#endif
1633
1634#ifndef ECB_MEMORY_FENCE
1635# define ECB_MEMORY_FENCE do { } while (0)
1636# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1637# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1638#endif
1639
476#define inline_size static inline 1640#define inline_size ecb_inline
477 1641
478#if EV_FEATURE_CODE 1642#if EV_FEATURE_CODE
479# define inline_speed static inline 1643# define inline_speed ecb_inline
480#else 1644#else
481# define inline_speed static noinline 1645# define inline_speed ecb_noinline static
482#endif 1646#endif
483 1647
484#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1648#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
485 1649
486#if EV_MINPRI == EV_MAXPRI 1650#if EV_MINPRI == EV_MAXPRI
487# define ABSPRI(w) (((W)w), 0) 1651# define ABSPRI(w) (((W)w), 0)
488#else 1652#else
489# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1653# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
490#endif 1654#endif
491 1655
492#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1656#define EMPTY /* required for microsofts broken pseudo-c compiler */
493#define EMPTY2(a,b) /* used to suppress some warnings */
494 1657
495typedef ev_watcher *W; 1658typedef ev_watcher *W;
496typedef ev_watcher_list *WL; 1659typedef ev_watcher_list *WL;
497typedef ev_watcher_time *WT; 1660typedef ev_watcher_time *WT;
498 1661
… …
523# include "ev_win32.c" 1686# include "ev_win32.c"
524#endif 1687#endif
525 1688
526/*****************************************************************************/ 1689/*****************************************************************************/
527 1690
1691#if EV_USE_LINUXAIO
1692# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
1693#endif
1694
1695/* define a suitable floor function (only used by periodics atm) */
1696
1697#if EV_USE_FLOOR
1698# include <math.h>
1699# define ev_floor(v) floor (v)
1700#else
1701
1702#include <float.h>
1703
1704/* a floor() replacement function, should be independent of ev_tstamp type */
1705ecb_noinline
1706static ev_tstamp
1707ev_floor (ev_tstamp v)
1708{
1709 /* the choice of shift factor is not terribly important */
1710#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1711 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1712#else
1713 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1714#endif
1715
1716 /* argument too large for an unsigned long? */
1717 if (ecb_expect_false (v >= shift))
1718 {
1719 ev_tstamp f;
1720
1721 if (v == v - 1.)
1722 return v; /* very large number */
1723
1724 f = shift * ev_floor (v * (1. / shift));
1725 return f + ev_floor (v - f);
1726 }
1727
1728 /* special treatment for negative args? */
1729 if (ecb_expect_false (v < 0.))
1730 {
1731 ev_tstamp f = -ev_floor (-v);
1732
1733 return f - (f == v ? 0 : 1);
1734 }
1735
1736 /* fits into an unsigned long */
1737 return (unsigned long)v;
1738}
1739
1740#endif
1741
1742/*****************************************************************************/
1743
528#ifdef __linux 1744#ifdef __linux
529# include <sys/utsname.h> 1745# include <sys/utsname.h>
530#endif 1746#endif
531 1747
1748ecb_noinline ecb_cold
532static unsigned int noinline 1749static unsigned int
533ev_linux_version (void) 1750ev_linux_version (void)
534{ 1751{
535#ifdef __linux 1752#ifdef __linux
536 unsigned int v = 0; 1753 unsigned int v = 0;
537 struct utsname buf; 1754 struct utsname buf;
… …
566} 1783}
567 1784
568/*****************************************************************************/ 1785/*****************************************************************************/
569 1786
570#if EV_AVOID_STDIO 1787#if EV_AVOID_STDIO
571static void noinline 1788ecb_noinline ecb_cold
1789static void
572ev_printerr (const char *msg) 1790ev_printerr (const char *msg)
573{ 1791{
574 write (STDERR_FILENO, msg, strlen (msg)); 1792 write (STDERR_FILENO, msg, strlen (msg));
575} 1793}
576#endif 1794#endif
577 1795
578static void (*syserr_cb)(const char *msg); 1796static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
579 1797
1798ecb_cold
580void 1799void
581ev_set_syserr_cb (void (*cb)(const char *msg)) 1800ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
582{ 1801{
583 syserr_cb = cb; 1802 syserr_cb = cb;
584} 1803}
585 1804
586static void noinline 1805ecb_noinline ecb_cold
1806static void
587ev_syserr (const char *msg) 1807ev_syserr (const char *msg)
588{ 1808{
589 if (!msg) 1809 if (!msg)
590 msg = "(libev) system error"; 1810 msg = "(libev) system error";
591 1811
… …
604 abort (); 1824 abort ();
605 } 1825 }
606} 1826}
607 1827
608static void * 1828static void *
609ev_realloc_emul (void *ptr, long size) 1829ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
610{ 1830{
611#if __GLIBC__
612 return realloc (ptr, size);
613#else
614 /* some systems, notably openbsd and darwin, fail to properly 1831 /* some systems, notably openbsd and darwin, fail to properly
615 * implement realloc (x, 0) (as required by both ansi c-89 and 1832 * implement realloc (x, 0) (as required by both ansi c-89 and
616 * the single unix specification, so work around them here. 1833 * the single unix specification, so work around them here.
1834 * recently, also (at least) fedora and debian started breaking it,
1835 * despite documenting it otherwise.
617 */ 1836 */
618 1837
619 if (size) 1838 if (size)
620 return realloc (ptr, size); 1839 return realloc (ptr, size);
621 1840
622 free (ptr); 1841 free (ptr);
623 return 0; 1842 return 0;
624#endif
625} 1843}
626 1844
627static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1845static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
628 1846
1847ecb_cold
629void 1848void
630ev_set_allocator (void *(*cb)(void *ptr, long size)) 1849ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
631{ 1850{
632 alloc = cb; 1851 alloc = cb;
633} 1852}
634 1853
635inline_speed void * 1854inline_speed void *
… …
662typedef struct 1881typedef struct
663{ 1882{
664 WL head; 1883 WL head;
665 unsigned char events; /* the events watched for */ 1884 unsigned char events; /* the events watched for */
666 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */ 1885 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
667 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1886 unsigned char emask; /* some backends store the actual kernel mask in here */
668 unsigned char unused; 1887 unsigned char unused;
669#if EV_USE_EPOLL 1888#if EV_USE_EPOLL
670 unsigned int egen; /* generation counter to counter epoll bugs */ 1889 unsigned int egen; /* generation counter to counter epoll bugs */
671#endif 1890#endif
672#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP 1891#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
… …
723 #undef VAR 1942 #undef VAR
724 }; 1943 };
725 #include "ev_wrap.h" 1944 #include "ev_wrap.h"
726 1945
727 static struct ev_loop default_loop_struct; 1946 static struct ev_loop default_loop_struct;
728 struct ev_loop *ev_default_loop_ptr; 1947 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
729 1948
730#else 1949#else
731 1950
732 ev_tstamp ev_rt_now; 1951 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
733 #define VAR(name,decl) static decl; 1952 #define VAR(name,decl) static decl;
734 #include "ev_vars.h" 1953 #include "ev_vars.h"
735 #undef VAR 1954 #undef VAR
736 1955
737 static int ev_default_loop_ptr; 1956 static int ev_default_loop_ptr;
738 1957
739#endif 1958#endif
740 1959
741#if EV_FEATURE_API 1960#if EV_FEATURE_API
742# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 1961# define EV_RELEASE_CB if (ecb_expect_false (release_cb)) release_cb (EV_A)
743# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 1962# define EV_ACQUIRE_CB if (ecb_expect_false (acquire_cb)) acquire_cb (EV_A)
744# define EV_INVOKE_PENDING invoke_cb (EV_A) 1963# define EV_INVOKE_PENDING invoke_cb (EV_A)
745#else 1964#else
746# define EV_RELEASE_CB (void)0 1965# define EV_RELEASE_CB (void)0
747# define EV_ACQUIRE_CB (void)0 1966# define EV_ACQUIRE_CB (void)0
748# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1967# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
… …
752 1971
753/*****************************************************************************/ 1972/*****************************************************************************/
754 1973
755#ifndef EV_HAVE_EV_TIME 1974#ifndef EV_HAVE_EV_TIME
756ev_tstamp 1975ev_tstamp
757ev_time (void) 1976ev_time (void) EV_NOEXCEPT
758{ 1977{
759#if EV_USE_REALTIME 1978#if EV_USE_REALTIME
760 if (expect_true (have_realtime)) 1979 if (ecb_expect_true (have_realtime))
761 { 1980 {
762 struct timespec ts; 1981 struct timespec ts;
763 clock_gettime (CLOCK_REALTIME, &ts); 1982 clock_gettime (CLOCK_REALTIME, &ts);
764 return ts.tv_sec + ts.tv_nsec * 1e-9; 1983 return ts.tv_sec + ts.tv_nsec * 1e-9;
765 } 1984 }
… …
773 1992
774inline_size ev_tstamp 1993inline_size ev_tstamp
775get_clock (void) 1994get_clock (void)
776{ 1995{
777#if EV_USE_MONOTONIC 1996#if EV_USE_MONOTONIC
778 if (expect_true (have_monotonic)) 1997 if (ecb_expect_true (have_monotonic))
779 { 1998 {
780 struct timespec ts; 1999 struct timespec ts;
781 clock_gettime (CLOCK_MONOTONIC, &ts); 2000 clock_gettime (CLOCK_MONOTONIC, &ts);
782 return ts.tv_sec + ts.tv_nsec * 1e-9; 2001 return ts.tv_sec + ts.tv_nsec * 1e-9;
783 } 2002 }
… …
786 return ev_time (); 2005 return ev_time ();
787} 2006}
788 2007
789#if EV_MULTIPLICITY 2008#if EV_MULTIPLICITY
790ev_tstamp 2009ev_tstamp
791ev_now (EV_P) 2010ev_now (EV_P) EV_NOEXCEPT
792{ 2011{
793 return ev_rt_now; 2012 return ev_rt_now;
794} 2013}
795#endif 2014#endif
796 2015
797void 2016void
798ev_sleep (ev_tstamp delay) 2017ev_sleep (ev_tstamp delay) EV_NOEXCEPT
799{ 2018{
800 if (delay > 0.) 2019 if (delay > 0.)
801 { 2020 {
802#if EV_USE_NANOSLEEP 2021#if EV_USE_NANOSLEEP
803 struct timespec ts; 2022 struct timespec ts;
804 2023
805 EV_TS_SET (ts, delay); 2024 EV_TS_SET (ts, delay);
806 nanosleep (&ts, 0); 2025 nanosleep (&ts, 0);
807#elif defined(_WIN32) 2026#elif defined _WIN32
2027 /* maybe this should round up, as ms is very low resolution */
2028 /* compared to select (µs) or nanosleep (ns) */
808 Sleep ((unsigned long)(delay * 1e3)); 2029 Sleep ((unsigned long)(delay * 1e3));
809#else 2030#else
810 struct timeval tv; 2031 struct timeval tv;
811 2032
812 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 2033 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
… …
816 select (0, 0, 0, 0, &tv); 2037 select (0, 0, 0, 0, &tv);
817#endif 2038#endif
818 } 2039 }
819} 2040}
820 2041
821inline_speed int
822ev_timeout_to_ms (ev_tstamp timeout)
823{
824 int ms = timeout * 1000. + .999999;
825
826 return expect_true (ms) ? ms : timeout < 1e-6 ? 0 : 1;
827}
828
829/*****************************************************************************/ 2042/*****************************************************************************/
830 2043
831#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 2044#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
832 2045
833/* find a suitable new size for the given array, */ 2046/* find a suitable new size for the given array, */
… …
839 2052
840 do 2053 do
841 ncur <<= 1; 2054 ncur <<= 1;
842 while (cnt > ncur); 2055 while (cnt > ncur);
843 2056
844 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 2057 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
845 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 2058 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
846 { 2059 {
847 ncur *= elem; 2060 ncur *= elem;
848 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 2061 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
849 ncur = ncur - sizeof (void *) * 4; 2062 ncur = ncur - sizeof (void *) * 4;
… …
851 } 2064 }
852 2065
853 return ncur; 2066 return ncur;
854} 2067}
855 2068
856static noinline void * 2069ecb_noinline ecb_cold
2070static void *
857array_realloc (int elem, void *base, int *cur, int cnt) 2071array_realloc (int elem, void *base, int *cur, int cnt)
858{ 2072{
859 *cur = array_nextsize (elem, *cur, cnt); 2073 *cur = array_nextsize (elem, *cur, cnt);
860 return ev_realloc (base, elem * *cur); 2074 return ev_realloc (base, elem * *cur);
861} 2075}
862 2076
2077#define array_needsize_noinit(base,offset,count)
2078
863#define array_init_zero(base,count) \ 2079#define array_needsize_zerofill(base,offset,count) \
864 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 2080 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
865 2081
866#define array_needsize(type,base,cur,cnt,init) \ 2082#define array_needsize(type,base,cur,cnt,init) \
867 if (expect_false ((cnt) > (cur))) \ 2083 if (ecb_expect_false ((cnt) > (cur))) \
868 { \ 2084 { \
869 int ocur_ = (cur); \ 2085 ecb_unused int ocur_ = (cur); \
870 (base) = (type *)array_realloc \ 2086 (base) = (type *)array_realloc \
871 (sizeof (type), (base), &(cur), (cnt)); \ 2087 (sizeof (type), (base), &(cur), (cnt)); \
872 init ((base) + (ocur_), (cur) - ocur_); \ 2088 init ((base), ocur_, ((cur) - ocur_)); \
873 } 2089 }
874 2090
875#if 0 2091#if 0
876#define array_slim(type,stem) \ 2092#define array_slim(type,stem) \
877 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2093 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
… …
886 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 2102 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
887 2103
888/*****************************************************************************/ 2104/*****************************************************************************/
889 2105
890/* dummy callback for pending events */ 2106/* dummy callback for pending events */
891static void noinline 2107ecb_noinline
2108static void
892pendingcb (EV_P_ ev_prepare *w, int revents) 2109pendingcb (EV_P_ ev_prepare *w, int revents)
893{ 2110{
894} 2111}
895 2112
896void noinline 2113ecb_noinline
2114void
897ev_feed_event (EV_P_ void *w, int revents) 2115ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
898{ 2116{
899 W w_ = (W)w; 2117 W w_ = (W)w;
900 int pri = ABSPRI (w_); 2118 int pri = ABSPRI (w_);
901 2119
902 if (expect_false (w_->pending)) 2120 if (ecb_expect_false (w_->pending))
903 pendings [pri][w_->pending - 1].events |= revents; 2121 pendings [pri][w_->pending - 1].events |= revents;
904 else 2122 else
905 { 2123 {
906 w_->pending = ++pendingcnt [pri]; 2124 w_->pending = ++pendingcnt [pri];
907 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2125 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
908 pendings [pri][w_->pending - 1].w = w_; 2126 pendings [pri][w_->pending - 1].w = w_;
909 pendings [pri][w_->pending - 1].events = revents; 2127 pendings [pri][w_->pending - 1].events = revents;
910 } 2128 }
2129
2130 pendingpri = NUMPRI - 1;
911} 2131}
912 2132
913inline_speed void 2133inline_speed void
914feed_reverse (EV_P_ W w) 2134feed_reverse (EV_P_ W w)
915{ 2135{
916 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2136 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
917 rfeeds [rfeedcnt++] = w; 2137 rfeeds [rfeedcnt++] = w;
918} 2138}
919 2139
920inline_size void 2140inline_size void
921feed_reverse_done (EV_P_ int revents) 2141feed_reverse_done (EV_P_ int revents)
… …
956inline_speed void 2176inline_speed void
957fd_event (EV_P_ int fd, int revents) 2177fd_event (EV_P_ int fd, int revents)
958{ 2178{
959 ANFD *anfd = anfds + fd; 2179 ANFD *anfd = anfds + fd;
960 2180
961 if (expect_true (!anfd->reify)) 2181 if (ecb_expect_true (!anfd->reify))
962 fd_event_nocheck (EV_A_ fd, revents); 2182 fd_event_nocheck (EV_A_ fd, revents);
963} 2183}
964 2184
965void 2185void
966ev_feed_fd_event (EV_P_ int fd, int revents) 2186ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
967{ 2187{
968 if (fd >= 0 && fd < anfdmax) 2188 if (fd >= 0 && fd < anfdmax)
969 fd_event_nocheck (EV_A_ fd, revents); 2189 fd_event_nocheck (EV_A_ fd, revents);
970} 2190}
971 2191
… …
980 for (i = 0; i < fdchangecnt; ++i) 2200 for (i = 0; i < fdchangecnt; ++i)
981 { 2201 {
982 int fd = fdchanges [i]; 2202 int fd = fdchanges [i];
983 ANFD *anfd = anfds + fd; 2203 ANFD *anfd = anfds + fd;
984 2204
985 if (anfd->reify & EV__IOFDSET) 2205 if (anfd->reify & EV__IOFDSET && anfd->head)
986 { 2206 {
987 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd); 2207 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
988 2208
989 if (handle != anfd->handle) 2209 if (handle != anfd->handle)
990 { 2210 {
… …
1008 ev_io *w; 2228 ev_io *w;
1009 2229
1010 unsigned char o_events = anfd->events; 2230 unsigned char o_events = anfd->events;
1011 unsigned char o_reify = anfd->reify; 2231 unsigned char o_reify = anfd->reify;
1012 2232
1013 anfd->reify = 0; 2233 anfd->reify = 0;
1014 2234
1015 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ 2235 /*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
1016 { 2236 {
1017 anfd->events = 0; 2237 anfd->events = 0;
1018 2238
1019 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2239 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
1020 anfd->events |= (unsigned char)w->events; 2240 anfd->events |= (unsigned char)w->events;
… …
1029 2249
1030 fdchangecnt = 0; 2250 fdchangecnt = 0;
1031} 2251}
1032 2252
1033/* something about the given fd changed */ 2253/* something about the given fd changed */
1034inline_size void 2254inline_size
2255void
1035fd_change (EV_P_ int fd, int flags) 2256fd_change (EV_P_ int fd, int flags)
1036{ 2257{
1037 unsigned char reify = anfds [fd].reify; 2258 unsigned char reify = anfds [fd].reify;
1038 anfds [fd].reify |= flags; 2259 anfds [fd].reify |= flags;
1039 2260
1040 if (expect_true (!reify)) 2261 if (ecb_expect_true (!reify))
1041 { 2262 {
1042 ++fdchangecnt; 2263 ++fdchangecnt;
1043 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2264 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
1044 fdchanges [fdchangecnt - 1] = fd; 2265 fdchanges [fdchangecnt - 1] = fd;
1045 } 2266 }
1046} 2267}
1047 2268
1048/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2269/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1049inline_speed void 2270inline_speed ecb_cold void
1050fd_kill (EV_P_ int fd) 2271fd_kill (EV_P_ int fd)
1051{ 2272{
1052 ev_io *w; 2273 ev_io *w;
1053 2274
1054 while ((w = (ev_io *)anfds [fd].head)) 2275 while ((w = (ev_io *)anfds [fd].head))
… …
1057 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2278 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1058 } 2279 }
1059} 2280}
1060 2281
1061/* check whether the given fd is actually valid, for error recovery */ 2282/* check whether the given fd is actually valid, for error recovery */
1062inline_size int 2283inline_size ecb_cold int
1063fd_valid (int fd) 2284fd_valid (int fd)
1064{ 2285{
1065#ifdef _WIN32 2286#ifdef _WIN32
1066 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2287 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1067#else 2288#else
1068 return fcntl (fd, F_GETFD) != -1; 2289 return fcntl (fd, F_GETFD) != -1;
1069#endif 2290#endif
1070} 2291}
1071 2292
1072/* called on EBADF to verify fds */ 2293/* called on EBADF to verify fds */
1073static void noinline 2294ecb_noinline ecb_cold
2295static void
1074fd_ebadf (EV_P) 2296fd_ebadf (EV_P)
1075{ 2297{
1076 int fd; 2298 int fd;
1077 2299
1078 for (fd = 0; fd < anfdmax; ++fd) 2300 for (fd = 0; fd < anfdmax; ++fd)
… …
1080 if (!fd_valid (fd) && errno == EBADF) 2302 if (!fd_valid (fd) && errno == EBADF)
1081 fd_kill (EV_A_ fd); 2303 fd_kill (EV_A_ fd);
1082} 2304}
1083 2305
1084/* called on ENOMEM in select/poll to kill some fds and retry */ 2306/* called on ENOMEM in select/poll to kill some fds and retry */
1085static void noinline 2307ecb_noinline ecb_cold
2308static void
1086fd_enomem (EV_P) 2309fd_enomem (EV_P)
1087{ 2310{
1088 int fd; 2311 int fd;
1089 2312
1090 for (fd = anfdmax; fd--; ) 2313 for (fd = anfdmax; fd--; )
… …
1094 break; 2317 break;
1095 } 2318 }
1096} 2319}
1097 2320
1098/* usually called after fork if backend needs to re-arm all fds from scratch */ 2321/* usually called after fork if backend needs to re-arm all fds from scratch */
1099static void noinline 2322ecb_noinline
2323static void
1100fd_rearm_all (EV_P) 2324fd_rearm_all (EV_P)
1101{ 2325{
1102 int fd; 2326 int fd;
1103 2327
1104 for (fd = 0; fd < anfdmax; ++fd) 2328 for (fd = 0; fd < anfdmax; ++fd)
… …
1157 ev_tstamp minat; 2381 ev_tstamp minat;
1158 ANHE *minpos; 2382 ANHE *minpos;
1159 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; 2383 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
1160 2384
1161 /* find minimum child */ 2385 /* find minimum child */
1162 if (expect_true (pos + DHEAP - 1 < E)) 2386 if (ecb_expect_true (pos + DHEAP - 1 < E))
1163 { 2387 {
1164 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2388 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1165 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2389 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1166 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2390 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1167 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2391 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
… …
1285 2509
1286/*****************************************************************************/ 2510/*****************************************************************************/
1287 2511
1288#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2512#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1289 2513
1290static void noinline 2514ecb_noinline ecb_cold
2515static void
1291evpipe_init (EV_P) 2516evpipe_init (EV_P)
1292{ 2517{
1293 if (!ev_is_active (&pipe_w)) 2518 if (!ev_is_active (&pipe_w))
1294 { 2519 {
2520 int fds [2];
2521
1295# if EV_USE_EVENTFD 2522# if EV_USE_EVENTFD
2523 fds [0] = -1;
1296 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2524 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1297 if (evfd < 0 && errno == EINVAL) 2525 if (fds [1] < 0 && errno == EINVAL)
1298 evfd = eventfd (0, 0); 2526 fds [1] = eventfd (0, 0);
1299 2527
1300 if (evfd >= 0) 2528 if (fds [1] < 0)
2529# endif
1301 { 2530 {
2531 while (pipe (fds))
2532 ev_syserr ("(libev) error creating signal/async pipe");
2533
2534 fd_intern (fds [0]);
2535 }
2536
1302 evpipe [0] = -1; 2537 evpipe [0] = fds [0];
1303 fd_intern (evfd); /* doing it twice doesn't hurt */ 2538
1304 ev_io_set (&pipe_w, evfd, EV_READ); 2539 if (evpipe [1] < 0)
2540 evpipe [1] = fds [1]; /* first call, set write fd */
2541 else
2542 {
2543 /* on subsequent calls, do not change evpipe [1] */
2544 /* so that evpipe_write can always rely on its value. */
2545 /* this branch does not do anything sensible on windows, */
2546 /* so must not be executed on windows */
2547
2548 dup2 (fds [1], evpipe [1]);
2549 close (fds [1]);
2550 }
2551
2552 fd_intern (evpipe [1]);
2553
2554 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2555 ev_io_start (EV_A_ &pipe_w);
2556 ev_unref (EV_A); /* watcher should not keep loop alive */
2557 }
2558}
2559
2560inline_speed void
2561evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2562{
2563 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2564
2565 if (ecb_expect_true (*flag))
2566 return;
2567
2568 *flag = 1;
2569 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2570
2571 pipe_write_skipped = 1;
2572
2573 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2574
2575 if (pipe_write_wanted)
2576 {
2577 int old_errno;
2578
2579 pipe_write_skipped = 0;
2580 ECB_MEMORY_FENCE_RELEASE;
2581
2582 old_errno = errno; /* save errno because write will clobber it */
2583
2584#if EV_USE_EVENTFD
2585 if (evpipe [0] < 0)
2586 {
2587 uint64_t counter = 1;
2588 write (evpipe [1], &counter, sizeof (uint64_t));
1305 } 2589 }
1306 else 2590 else
1307# endif 2591#endif
1308 { 2592 {
1309 while (pipe (evpipe)) 2593#ifdef _WIN32
1310 ev_syserr ("(libev) error creating signal/async pipe"); 2594 WSABUF buf;
1311 2595 DWORD sent;
1312 fd_intern (evpipe [0]); 2596 buf.buf = (char *)&buf;
1313 fd_intern (evpipe [1]); 2597 buf.len = 1;
1314 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2598 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2599#else
2600 write (evpipe [1], &(evpipe [1]), 1);
2601#endif
1315 } 2602 }
1316
1317 ev_io_start (EV_A_ &pipe_w);
1318 ev_unref (EV_A); /* watcher should not keep loop alive */
1319 }
1320}
1321
1322inline_size void
1323evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1324{
1325 if (!*flag)
1326 {
1327 int old_errno = errno; /* save errno because write might clobber it */
1328 char dummy;
1329
1330 *flag = 1;
1331
1332#if EV_USE_EVENTFD
1333 if (evfd >= 0)
1334 {
1335 uint64_t counter = 1;
1336 write (evfd, &counter, sizeof (uint64_t));
1337 }
1338 else
1339#endif
1340 /* win32 people keep sending patches that change this write() to send() */
1341 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1342 /* so when you think this write should be a send instead, please find out */
1343 /* where your send() is from - it's definitely not the microsoft send, and */
1344 /* tell me. thank you. */
1345 write (evpipe [1], &dummy, 1);
1346 2603
1347 errno = old_errno; 2604 errno = old_errno;
1348 } 2605 }
1349} 2606}
1350 2607
… …
1353static void 2610static void
1354pipecb (EV_P_ ev_io *iow, int revents) 2611pipecb (EV_P_ ev_io *iow, int revents)
1355{ 2612{
1356 int i; 2613 int i;
1357 2614
2615 if (revents & EV_READ)
2616 {
1358#if EV_USE_EVENTFD 2617#if EV_USE_EVENTFD
1359 if (evfd >= 0) 2618 if (evpipe [0] < 0)
1360 { 2619 {
1361 uint64_t counter; 2620 uint64_t counter;
1362 read (evfd, &counter, sizeof (uint64_t)); 2621 read (evpipe [1], &counter, sizeof (uint64_t));
1363 } 2622 }
1364 else 2623 else
1365#endif 2624#endif
1366 { 2625 {
1367 char dummy; 2626 char dummy[4];
1368 /* see discussion in evpipe_write when you think this read should be recv in win32 */ 2627#ifdef _WIN32
2628 WSABUF buf;
2629 DWORD recvd;
2630 DWORD flags = 0;
2631 buf.buf = dummy;
2632 buf.len = sizeof (dummy);
2633 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2634#else
1369 read (evpipe [0], &dummy, 1); 2635 read (evpipe [0], &dummy, sizeof (dummy));
2636#endif
2637 }
1370 } 2638 }
2639
2640 pipe_write_skipped = 0;
2641
2642 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1371 2643
1372#if EV_SIGNAL_ENABLE 2644#if EV_SIGNAL_ENABLE
1373 if (sig_pending) 2645 if (sig_pending)
1374 { 2646 {
1375 sig_pending = 0; 2647 sig_pending = 0;
1376 2648
2649 ECB_MEMORY_FENCE;
2650
1377 for (i = EV_NSIG - 1; i--; ) 2651 for (i = EV_NSIG - 1; i--; )
1378 if (expect_false (signals [i].pending)) 2652 if (ecb_expect_false (signals [i].pending))
1379 ev_feed_signal_event (EV_A_ i + 1); 2653 ev_feed_signal_event (EV_A_ i + 1);
1380 } 2654 }
1381#endif 2655#endif
1382 2656
1383#if EV_ASYNC_ENABLE 2657#if EV_ASYNC_ENABLE
1384 if (async_pending) 2658 if (async_pending)
1385 { 2659 {
1386 async_pending = 0; 2660 async_pending = 0;
2661
2662 ECB_MEMORY_FENCE;
1387 2663
1388 for (i = asynccnt; i--; ) 2664 for (i = asynccnt; i--; )
1389 if (asyncs [i]->sent) 2665 if (asyncs [i]->sent)
1390 { 2666 {
1391 asyncs [i]->sent = 0; 2667 asyncs [i]->sent = 0;
2668 ECB_MEMORY_FENCE_RELEASE;
1392 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2669 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1393 } 2670 }
1394 } 2671 }
1395#endif 2672#endif
1396} 2673}
1397 2674
1398/*****************************************************************************/ 2675/*****************************************************************************/
1399 2676
1400void 2677void
1401ev_feed_signal (int signum) 2678ev_feed_signal (int signum) EV_NOEXCEPT
1402{ 2679{
1403#if EV_MULTIPLICITY 2680#if EV_MULTIPLICITY
2681 EV_P;
2682 ECB_MEMORY_FENCE_ACQUIRE;
1404 EV_P = signals [signum - 1].loop; 2683 EV_A = signals [signum - 1].loop;
1405 2684
1406 if (!EV_A) 2685 if (!EV_A)
1407 return; 2686 return;
1408#endif 2687#endif
1409 2688
… …
1419#endif 2698#endif
1420 2699
1421 ev_feed_signal (signum); 2700 ev_feed_signal (signum);
1422} 2701}
1423 2702
1424void noinline 2703ecb_noinline
2704void
1425ev_feed_signal_event (EV_P_ int signum) 2705ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
1426{ 2706{
1427 WL w; 2707 WL w;
1428 2708
1429 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2709 if (ecb_expect_false (signum <= 0 || signum >= EV_NSIG))
1430 return; 2710 return;
1431 2711
1432 --signum; 2712 --signum;
1433 2713
1434#if EV_MULTIPLICITY 2714#if EV_MULTIPLICITY
1435 /* it is permissible to try to feed a signal to the wrong loop */ 2715 /* it is permissible to try to feed a signal to the wrong loop */
1436 /* or, likely more useful, feeding a signal nobody is waiting for */ 2716 /* or, likely more useful, feeding a signal nobody is waiting for */
1437 2717
1438 if (expect_false (signals [signum].loop != EV_A)) 2718 if (ecb_expect_false (signals [signum].loop != EV_A))
1439 return; 2719 return;
1440#endif 2720#endif
1441 2721
1442 signals [signum].pending = 0; 2722 signals [signum].pending = 0;
2723 ECB_MEMORY_FENCE_RELEASE;
1443 2724
1444 for (w = signals [signum].head; w; w = w->next) 2725 for (w = signals [signum].head; w; w = w->next)
1445 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2726 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1446} 2727}
1447 2728
… …
1538# include "ev_kqueue.c" 2819# include "ev_kqueue.c"
1539#endif 2820#endif
1540#if EV_USE_EPOLL 2821#if EV_USE_EPOLL
1541# include "ev_epoll.c" 2822# include "ev_epoll.c"
1542#endif 2823#endif
2824#if EV_USE_LINUXAIO
2825# include "ev_linuxaio.c"
2826#endif
2827#if EV_USE_IOURING
2828# include "ev_iouring.c"
2829#endif
1543#if EV_USE_POLL 2830#if EV_USE_POLL
1544# include "ev_poll.c" 2831# include "ev_poll.c"
1545#endif 2832#endif
1546#if EV_USE_SELECT 2833#if EV_USE_SELECT
1547# include "ev_select.c" 2834# include "ev_select.c"
1548#endif 2835#endif
1549 2836
1550int 2837ecb_cold int
1551ev_version_major (void) 2838ev_version_major (void) EV_NOEXCEPT
1552{ 2839{
1553 return EV_VERSION_MAJOR; 2840 return EV_VERSION_MAJOR;
1554} 2841}
1555 2842
1556int 2843ecb_cold int
1557ev_version_minor (void) 2844ev_version_minor (void) EV_NOEXCEPT
1558{ 2845{
1559 return EV_VERSION_MINOR; 2846 return EV_VERSION_MINOR;
1560} 2847}
1561 2848
1562/* return true if we are running with elevated privileges and should ignore env variables */ 2849/* return true if we are running with elevated privileges and should ignore env variables */
1563int inline_size 2850inline_size ecb_cold int
1564enable_secure (void) 2851enable_secure (void)
1565{ 2852{
1566#ifdef _WIN32 2853#ifdef _WIN32
1567 return 0; 2854 return 0;
1568#else 2855#else
1569 return getuid () != geteuid () 2856 return getuid () != geteuid ()
1570 || getgid () != getegid (); 2857 || getgid () != getegid ();
1571#endif 2858#endif
1572} 2859}
1573 2860
2861ecb_cold
1574unsigned int 2862unsigned int
1575ev_supported_backends (void) 2863ev_supported_backends (void) EV_NOEXCEPT
1576{ 2864{
1577 unsigned int flags = 0; 2865 unsigned int flags = 0;
1578 2866
1579 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2867 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1580 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2868 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
1581 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 2869 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2870 if (EV_USE_LINUXAIO) flags |= EVBACKEND_LINUXAIO;
2871 if (EV_USE_IOURING ) flags |= EVBACKEND_IOURING;
1582 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 2872 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
1583 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2873 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
1584 2874
1585 return flags; 2875 return flags;
1586} 2876}
1587 2877
2878ecb_cold
1588unsigned int 2879unsigned int
1589ev_recommended_backends (void) 2880ev_recommended_backends (void) EV_NOEXCEPT
1590{ 2881{
1591 unsigned int flags = ev_supported_backends (); 2882 unsigned int flags = ev_supported_backends ();
1592 2883
1593#ifndef __NetBSD__ 2884#ifndef __NetBSD__
1594 /* kqueue is borked on everything but netbsd apparently */ 2885 /* kqueue is borked on everything but netbsd apparently */
… …
1602#endif 2893#endif
1603#ifdef __FreeBSD__ 2894#ifdef __FreeBSD__
1604 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */ 2895 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1605#endif 2896#endif
1606 2897
2898 /* TODO: linuxaio is very experimental */
2899#if !EV_RECOMMEND_LINUXAIO
2900 flags &= ~EVBACKEND_LINUXAIO;
2901#endif
2902 /* TODO: linuxaio is super experimental */
2903#if !EV_RECOMMEND_IOURING
2904 flags &= ~EVBACKEND_IOURING;
2905#endif
2906
1607 return flags; 2907 return flags;
1608} 2908}
1609 2909
2910ecb_cold
1610unsigned int 2911unsigned int
1611ev_embeddable_backends (void) 2912ev_embeddable_backends (void) EV_NOEXCEPT
1612{ 2913{
1613 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2914 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1614 2915
1615 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2916 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1616 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ 2917 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
… …
1618 2919
1619 return flags; 2920 return flags;
1620} 2921}
1621 2922
1622unsigned int 2923unsigned int
1623ev_backend (EV_P) 2924ev_backend (EV_P) EV_NOEXCEPT
1624{ 2925{
1625 return backend; 2926 return backend;
1626} 2927}
1627 2928
1628#if EV_FEATURE_API 2929#if EV_FEATURE_API
1629unsigned int 2930unsigned int
1630ev_iteration (EV_P) 2931ev_iteration (EV_P) EV_NOEXCEPT
1631{ 2932{
1632 return loop_count; 2933 return loop_count;
1633} 2934}
1634 2935
1635unsigned int 2936unsigned int
1636ev_depth (EV_P) 2937ev_depth (EV_P) EV_NOEXCEPT
1637{ 2938{
1638 return loop_depth; 2939 return loop_depth;
1639} 2940}
1640 2941
1641void 2942void
1642ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2943ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1643{ 2944{
1644 io_blocktime = interval; 2945 io_blocktime = interval;
1645} 2946}
1646 2947
1647void 2948void
1648ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2949ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1649{ 2950{
1650 timeout_blocktime = interval; 2951 timeout_blocktime = interval;
1651} 2952}
1652 2953
1653void 2954void
1654ev_set_userdata (EV_P_ void *data) 2955ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
1655{ 2956{
1656 userdata = data; 2957 userdata = data;
1657} 2958}
1658 2959
1659void * 2960void *
1660ev_userdata (EV_P) 2961ev_userdata (EV_P) EV_NOEXCEPT
1661{ 2962{
1662 return userdata; 2963 return userdata;
1663} 2964}
1664 2965
2966void
1665void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2967ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
1666{ 2968{
1667 invoke_cb = invoke_pending_cb; 2969 invoke_cb = invoke_pending_cb;
1668} 2970}
1669 2971
2972void
1670void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2973ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
1671{ 2974{
1672 release_cb = release; 2975 release_cb = release;
1673 acquire_cb = acquire; 2976 acquire_cb = acquire;
1674} 2977}
1675#endif 2978#endif
1676 2979
1677/* initialise a loop structure, must be zero-initialised */ 2980/* initialise a loop structure, must be zero-initialised */
1678static void noinline 2981ecb_noinline ecb_cold
2982static void
1679loop_init (EV_P_ unsigned int flags) 2983loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
1680{ 2984{
1681 if (!backend) 2985 if (!backend)
1682 { 2986 {
1683 origflags = flags; 2987 origflags = flags;
1684 2988
… …
1711 if (!(flags & EVFLAG_NOENV) 3015 if (!(flags & EVFLAG_NOENV)
1712 && !enable_secure () 3016 && !enable_secure ()
1713 && getenv ("LIBEV_FLAGS")) 3017 && getenv ("LIBEV_FLAGS"))
1714 flags = atoi (getenv ("LIBEV_FLAGS")); 3018 flags = atoi (getenv ("LIBEV_FLAGS"));
1715 3019
1716 ev_rt_now = ev_time (); 3020 ev_rt_now = ev_time ();
1717 mn_now = get_clock (); 3021 mn_now = get_clock ();
1718 now_floor = mn_now; 3022 now_floor = mn_now;
1719 rtmn_diff = ev_rt_now - mn_now; 3023 rtmn_diff = ev_rt_now - mn_now;
1720#if EV_FEATURE_API 3024#if EV_FEATURE_API
1721 invoke_cb = ev_invoke_pending; 3025 invoke_cb = ev_invoke_pending;
1722#endif 3026#endif
1723 3027
1724 io_blocktime = 0.; 3028 io_blocktime = 0.;
1725 timeout_blocktime = 0.; 3029 timeout_blocktime = 0.;
1726 backend = 0; 3030 backend = 0;
1727 backend_fd = -1; 3031 backend_fd = -1;
1728 sig_pending = 0; 3032 sig_pending = 0;
1729#if EV_ASYNC_ENABLE 3033#if EV_ASYNC_ENABLE
1730 async_pending = 0; 3034 async_pending = 0;
1731#endif 3035#endif
3036 pipe_write_skipped = 0;
3037 pipe_write_wanted = 0;
3038 evpipe [0] = -1;
3039 evpipe [1] = -1;
1732#if EV_USE_INOTIFY 3040#if EV_USE_INOTIFY
1733 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 3041 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1734#endif 3042#endif
1735#if EV_USE_SIGNALFD 3043#if EV_USE_SIGNALFD
1736 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 3044 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1737#endif 3045#endif
1738 3046
1739 if (!(flags & EVBACKEND_MASK)) 3047 if (!(flags & EVBACKEND_MASK))
1740 flags |= ev_recommended_backends (); 3048 flags |= ev_recommended_backends ();
1741 3049
1742#if EV_USE_IOCP 3050#if EV_USE_IOCP
1743 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags); 3051 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
1744#endif 3052#endif
1745#if EV_USE_PORT 3053#if EV_USE_PORT
1746 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 3054 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1747#endif 3055#endif
1748#if EV_USE_KQUEUE 3056#if EV_USE_KQUEUE
1749 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 3057 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
3058#endif
3059#if EV_USE_IOURING
3060 if (!backend && (flags & EVBACKEND_IOURING )) backend = iouring_init (EV_A_ flags);
3061#endif
3062#if EV_USE_LINUXAIO
3063 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
1750#endif 3064#endif
1751#if EV_USE_EPOLL 3065#if EV_USE_EPOLL
1752 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 3066 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
1753#endif 3067#endif
1754#if EV_USE_POLL 3068#if EV_USE_POLL
1755 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 3069 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
1756#endif 3070#endif
1757#if EV_USE_SELECT 3071#if EV_USE_SELECT
1758 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 3072 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
1759#endif 3073#endif
1760 3074
1761 ev_prepare_init (&pending_w, pendingcb); 3075 ev_prepare_init (&pending_w, pendingcb);
1762 3076
1763#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 3077#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
… …
1766#endif 3080#endif
1767 } 3081 }
1768} 3082}
1769 3083
1770/* free up a loop structure */ 3084/* free up a loop structure */
3085ecb_cold
1771void 3086void
1772ev_loop_destroy (EV_P) 3087ev_loop_destroy (EV_P)
1773{ 3088{
1774 int i; 3089 int i;
1775 3090
… …
1779 return; 3094 return;
1780#endif 3095#endif
1781 3096
1782#if EV_CLEANUP_ENABLE 3097#if EV_CLEANUP_ENABLE
1783 /* queue cleanup watchers (and execute them) */ 3098 /* queue cleanup watchers (and execute them) */
1784 if (expect_false (cleanupcnt)) 3099 if (ecb_expect_false (cleanupcnt))
1785 { 3100 {
1786 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP); 3101 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
1787 EV_INVOKE_PENDING; 3102 EV_INVOKE_PENDING;
1788 } 3103 }
1789#endif 3104#endif
1790 3105
1791#if EV_CHILD_ENABLE 3106#if EV_CHILD_ENABLE
1792 if (ev_is_active (&childev)) 3107 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
1793 { 3108 {
1794 ev_ref (EV_A); /* child watcher */ 3109 ev_ref (EV_A); /* child watcher */
1795 ev_signal_stop (EV_A_ &childev); 3110 ev_signal_stop (EV_A_ &childev);
1796 } 3111 }
1797#endif 3112#endif
… …
1799 if (ev_is_active (&pipe_w)) 3114 if (ev_is_active (&pipe_w))
1800 { 3115 {
1801 /*ev_ref (EV_A);*/ 3116 /*ev_ref (EV_A);*/
1802 /*ev_io_stop (EV_A_ &pipe_w);*/ 3117 /*ev_io_stop (EV_A_ &pipe_w);*/
1803 3118
1804#if EV_USE_EVENTFD
1805 if (evfd >= 0)
1806 close (evfd);
1807#endif
1808
1809 if (evpipe [0] >= 0)
1810 {
1811 EV_WIN32_CLOSE_FD (evpipe [0]); 3119 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1812 EV_WIN32_CLOSE_FD (evpipe [1]); 3120 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1813 }
1814 } 3121 }
1815 3122
1816#if EV_USE_SIGNALFD 3123#if EV_USE_SIGNALFD
1817 if (ev_is_active (&sigfd_w)) 3124 if (ev_is_active (&sigfd_w))
1818 close (sigfd); 3125 close (sigfd);
… …
1825 3132
1826 if (backend_fd >= 0) 3133 if (backend_fd >= 0)
1827 close (backend_fd); 3134 close (backend_fd);
1828 3135
1829#if EV_USE_IOCP 3136#if EV_USE_IOCP
1830 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A); 3137 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
1831#endif 3138#endif
1832#if EV_USE_PORT 3139#if EV_USE_PORT
1833 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3140 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1834#endif 3141#endif
1835#if EV_USE_KQUEUE 3142#if EV_USE_KQUEUE
1836 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3143 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
3144#endif
3145#if EV_USE_IOURING
3146 if (backend == EVBACKEND_IOURING ) iouring_destroy (EV_A);
3147#endif
3148#if EV_USE_LINUXAIO
3149 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
1837#endif 3150#endif
1838#if EV_USE_EPOLL 3151#if EV_USE_EPOLL
1839 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3152 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
1840#endif 3153#endif
1841#if EV_USE_POLL 3154#if EV_USE_POLL
1842 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3155 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
1843#endif 3156#endif
1844#if EV_USE_SELECT 3157#if EV_USE_SELECT
1845 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3158 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
1846#endif 3159#endif
1847 3160
1848 for (i = NUMPRI; i--; ) 3161 for (i = NUMPRI; i--; )
1849 { 3162 {
1850 array_free (pending, [i]); 3163 array_free (pending, [i]);
… …
1892 3205
1893inline_size void 3206inline_size void
1894loop_fork (EV_P) 3207loop_fork (EV_P)
1895{ 3208{
1896#if EV_USE_PORT 3209#if EV_USE_PORT
1897 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3210 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1898#endif 3211#endif
1899#if EV_USE_KQUEUE 3212#if EV_USE_KQUEUE
1900 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 3213 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
3214#endif
3215#if EV_USE_IOURING
3216 if (backend == EVBACKEND_IOURING ) iouring_fork (EV_A);
3217#endif
3218#if EV_USE_LINUXAIO
3219 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
1901#endif 3220#endif
1902#if EV_USE_EPOLL 3221#if EV_USE_EPOLL
1903 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3222 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
1904#endif 3223#endif
1905#if EV_USE_INOTIFY 3224#if EV_USE_INOTIFY
1906 infy_fork (EV_A); 3225 infy_fork (EV_A);
1907#endif 3226#endif
1908 3227
3228#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1909 if (ev_is_active (&pipe_w)) 3229 if (ev_is_active (&pipe_w) && postfork != 2)
1910 { 3230 {
1911 /* this "locks" the handlers against writing to the pipe */ 3231 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1912 /* while we modify the fd vars */
1913 sig_pending = 1;
1914#if EV_ASYNC_ENABLE
1915 async_pending = 1;
1916#endif
1917 3232
1918 ev_ref (EV_A); 3233 ev_ref (EV_A);
1919 ev_io_stop (EV_A_ &pipe_w); 3234 ev_io_stop (EV_A_ &pipe_w);
1920 3235
1921#if EV_USE_EVENTFD
1922 if (evfd >= 0)
1923 close (evfd);
1924#endif
1925
1926 if (evpipe [0] >= 0) 3236 if (evpipe [0] >= 0)
1927 {
1928 EV_WIN32_CLOSE_FD (evpipe [0]); 3237 EV_WIN32_CLOSE_FD (evpipe [0]);
1929 EV_WIN32_CLOSE_FD (evpipe [1]);
1930 }
1931 3238
1932#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1933 evpipe_init (EV_A); 3239 evpipe_init (EV_A);
1934 /* now iterate over everything, in case we missed something */ 3240 /* iterate over everything, in case we missed something before */
1935 pipecb (EV_A_ &pipe_w, EV_READ); 3241 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1936#endif
1937 } 3242 }
3243#endif
1938 3244
1939 postfork = 0; 3245 postfork = 0;
1940} 3246}
1941 3247
1942#if EV_MULTIPLICITY 3248#if EV_MULTIPLICITY
1943 3249
3250ecb_cold
1944struct ev_loop * 3251struct ev_loop *
1945ev_loop_new (unsigned int flags) 3252ev_loop_new (unsigned int flags) EV_NOEXCEPT
1946{ 3253{
1947 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3254 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1948 3255
1949 memset (EV_A, 0, sizeof (struct ev_loop)); 3256 memset (EV_A, 0, sizeof (struct ev_loop));
1950 loop_init (EV_A_ flags); 3257 loop_init (EV_A_ flags);
… …
1957} 3264}
1958 3265
1959#endif /* multiplicity */ 3266#endif /* multiplicity */
1960 3267
1961#if EV_VERIFY 3268#if EV_VERIFY
1962static void noinline 3269ecb_noinline ecb_cold
3270static void
1963verify_watcher (EV_P_ W w) 3271verify_watcher (EV_P_ W w)
1964{ 3272{
1965 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3273 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1966 3274
1967 if (w->pending) 3275 if (w->pending)
1968 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3276 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1969} 3277}
1970 3278
1971static void noinline 3279ecb_noinline ecb_cold
3280static void
1972verify_heap (EV_P_ ANHE *heap, int N) 3281verify_heap (EV_P_ ANHE *heap, int N)
1973{ 3282{
1974 int i; 3283 int i;
1975 3284
1976 for (i = HEAP0; i < N + HEAP0; ++i) 3285 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1981 3290
1982 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3291 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1983 } 3292 }
1984} 3293}
1985 3294
1986static void noinline 3295ecb_noinline ecb_cold
3296static void
1987array_verify (EV_P_ W *ws, int cnt) 3297array_verify (EV_P_ W *ws, int cnt)
1988{ 3298{
1989 while (cnt--) 3299 while (cnt--)
1990 { 3300 {
1991 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3301 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
1993 } 3303 }
1994} 3304}
1995#endif 3305#endif
1996 3306
1997#if EV_FEATURE_API 3307#if EV_FEATURE_API
1998void 3308void ecb_cold
1999ev_verify (EV_P) 3309ev_verify (EV_P) EV_NOEXCEPT
2000{ 3310{
2001#if EV_VERIFY 3311#if EV_VERIFY
2002 int i; 3312 int i;
2003 WL w; 3313 WL w, w2;
2004 3314
2005 assert (activecnt >= -1); 3315 assert (activecnt >= -1);
2006 3316
2007 assert (fdchangemax >= fdchangecnt); 3317 assert (fdchangemax >= fdchangecnt);
2008 for (i = 0; i < fdchangecnt; ++i) 3318 for (i = 0; i < fdchangecnt; ++i)
2009 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3319 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
2010 3320
2011 assert (anfdmax >= 0); 3321 assert (anfdmax >= 0);
2012 for (i = 0; i < anfdmax; ++i) 3322 for (i = 0; i < anfdmax; ++i)
3323 {
3324 int j = 0;
3325
2013 for (w = anfds [i].head; w; w = w->next) 3326 for (w = w2 = anfds [i].head; w; w = w->next)
2014 { 3327 {
2015 verify_watcher (EV_A_ (W)w); 3328 verify_watcher (EV_A_ (W)w);
3329
3330 if (j++ & 1)
3331 {
3332 assert (("libev: io watcher list contains a loop", w != w2));
3333 w2 = w2->next;
3334 }
3335
2016 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3336 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
2017 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 3337 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
2018 } 3338 }
3339 }
2019 3340
2020 assert (timermax >= timercnt); 3341 assert (timermax >= timercnt);
2021 verify_heap (EV_A_ timers, timercnt); 3342 verify_heap (EV_A_ timers, timercnt);
2022 3343
2023#if EV_PERIODIC_ENABLE 3344#if EV_PERIODIC_ENABLE
… …
2069#endif 3390#endif
2070} 3391}
2071#endif 3392#endif
2072 3393
2073#if EV_MULTIPLICITY 3394#if EV_MULTIPLICITY
3395ecb_cold
2074struct ev_loop * 3396struct ev_loop *
2075#else 3397#else
2076int 3398int
2077#endif 3399#endif
2078ev_default_loop (unsigned int flags) 3400ev_default_loop (unsigned int flags) EV_NOEXCEPT
2079{ 3401{
2080 if (!ev_default_loop_ptr) 3402 if (!ev_default_loop_ptr)
2081 { 3403 {
2082#if EV_MULTIPLICITY 3404#if EV_MULTIPLICITY
2083 EV_P = ev_default_loop_ptr = &default_loop_struct; 3405 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
2102 3424
2103 return ev_default_loop_ptr; 3425 return ev_default_loop_ptr;
2104} 3426}
2105 3427
2106void 3428void
2107ev_loop_fork (EV_P) 3429ev_loop_fork (EV_P) EV_NOEXCEPT
2108{ 3430{
2109 postfork = 1; /* must be in line with ev_default_fork */ 3431 postfork = 1;
2110} 3432}
2111 3433
2112/*****************************************************************************/ 3434/*****************************************************************************/
2113 3435
2114void 3436void
… …
2116{ 3438{
2117 EV_CB_INVOKE ((W)w, revents); 3439 EV_CB_INVOKE ((W)w, revents);
2118} 3440}
2119 3441
2120unsigned int 3442unsigned int
2121ev_pending_count (EV_P) 3443ev_pending_count (EV_P) EV_NOEXCEPT
2122{ 3444{
2123 int pri; 3445 int pri;
2124 unsigned int count = 0; 3446 unsigned int count = 0;
2125 3447
2126 for (pri = NUMPRI; pri--; ) 3448 for (pri = NUMPRI; pri--; )
2127 count += pendingcnt [pri]; 3449 count += pendingcnt [pri];
2128 3450
2129 return count; 3451 return count;
2130} 3452}
2131 3453
2132void noinline 3454ecb_noinline
3455void
2133ev_invoke_pending (EV_P) 3456ev_invoke_pending (EV_P)
2134{ 3457{
2135 int pri; 3458 pendingpri = NUMPRI;
2136 3459
2137 for (pri = NUMPRI; pri--; ) 3460 do
3461 {
3462 --pendingpri;
3463
3464 /* pendingpri possibly gets modified in the inner loop */
2138 while (pendingcnt [pri]) 3465 while (pendingcnt [pendingpri])
2139 { 3466 {
2140 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3467 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2141 3468
2142 p->w->pending = 0; 3469 p->w->pending = 0;
2143 EV_CB_INVOKE (p->w, p->events); 3470 EV_CB_INVOKE (p->w, p->events);
2144 EV_FREQUENT_CHECK; 3471 EV_FREQUENT_CHECK;
2145 } 3472 }
3473 }
3474 while (pendingpri);
2146} 3475}
2147 3476
2148#if EV_IDLE_ENABLE 3477#if EV_IDLE_ENABLE
2149/* make idle watchers pending. this handles the "call-idle */ 3478/* make idle watchers pending. this handles the "call-idle */
2150/* only when higher priorities are idle" logic */ 3479/* only when higher priorities are idle" logic */
2151inline_size void 3480inline_size void
2152idle_reify (EV_P) 3481idle_reify (EV_P)
2153{ 3482{
2154 if (expect_false (idleall)) 3483 if (ecb_expect_false (idleall))
2155 { 3484 {
2156 int pri; 3485 int pri;
2157 3486
2158 for (pri = NUMPRI; pri--; ) 3487 for (pri = NUMPRI; pri--; )
2159 { 3488 {
… …
2208 } 3537 }
2209} 3538}
2210 3539
2211#if EV_PERIODIC_ENABLE 3540#if EV_PERIODIC_ENABLE
2212 3541
2213inline_speed void 3542ecb_noinline
3543static void
2214periodic_recalc (EV_P_ ev_periodic *w) 3544periodic_recalc (EV_P_ ev_periodic *w)
2215{ 3545{
2216 /* TODO: use slow but potentially more correct incremental algo, */ 3546 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2217 /* also do not rely on ceil */ 3547 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2218 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3548
3549 /* the above almost always errs on the low side */
3550 while (at <= ev_rt_now)
3551 {
3552 ev_tstamp nat = at + w->interval;
3553
3554 /* when resolution fails us, we use ev_rt_now */
3555 if (ecb_expect_false (nat == at))
3556 {
3557 at = ev_rt_now;
3558 break;
3559 }
3560
3561 at = nat;
3562 }
3563
3564 ev_at (w) = at;
2219} 3565}
2220 3566
2221/* make periodics pending */ 3567/* make periodics pending */
2222inline_size void 3568inline_size void
2223periodics_reify (EV_P) 3569periodics_reify (EV_P)
2224{ 3570{
2225 EV_FREQUENT_CHECK; 3571 EV_FREQUENT_CHECK;
2226 3572
2227 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3573 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2228 { 3574 {
2229 int feed_count = 0;
2230
2231 do 3575 do
2232 { 3576 {
2233 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3577 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2234 3578
2235 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3579 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2245 downheap (periodics, periodiccnt, HEAP0); 3589 downheap (periodics, periodiccnt, HEAP0);
2246 } 3590 }
2247 else if (w->interval) 3591 else if (w->interval)
2248 { 3592 {
2249 periodic_recalc (EV_A_ w); 3593 periodic_recalc (EV_A_ w);
2250
2251 /* if next trigger time is not sufficiently in the future, put it there */
2252 /* this might happen because of floating point inexactness */
2253 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2254 {
2255 ev_at (w) += w->interval;
2256
2257 /* if interval is unreasonably low we might still have a time in the past */
2258 /* so correct this. this will make the periodic very inexact, but the user */
2259 /* has effectively asked to get triggered more often than possible */
2260 if (ev_at (w) < ev_rt_now)
2261 ev_at (w) = ev_rt_now;
2262 }
2263
2264 ANHE_at_cache (periodics [HEAP0]); 3594 ANHE_at_cache (periodics [HEAP0]);
2265 downheap (periodics, periodiccnt, HEAP0); 3595 downheap (periodics, periodiccnt, HEAP0);
2266 } 3596 }
2267 else 3597 else
2268 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3598 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2276 } 3606 }
2277} 3607}
2278 3608
2279/* simply recalculate all periodics */ 3609/* simply recalculate all periodics */
2280/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3610/* TODO: maybe ensure that at least one event happens when jumping forward? */
2281static void noinline 3611ecb_noinline ecb_cold
3612static void
2282periodics_reschedule (EV_P) 3613periodics_reschedule (EV_P)
2283{ 3614{
2284 int i; 3615 int i;
2285 3616
2286 /* adjust periodics after time jump */ 3617 /* adjust periodics after time jump */
… …
2299 reheap (periodics, periodiccnt); 3630 reheap (periodics, periodiccnt);
2300} 3631}
2301#endif 3632#endif
2302 3633
2303/* adjust all timers by a given offset */ 3634/* adjust all timers by a given offset */
2304static void noinline 3635ecb_noinline ecb_cold
3636static void
2305timers_reschedule (EV_P_ ev_tstamp adjust) 3637timers_reschedule (EV_P_ ev_tstamp adjust)
2306{ 3638{
2307 int i; 3639 int i;
2308 3640
2309 for (i = 0; i < timercnt; ++i) 3641 for (i = 0; i < timercnt; ++i)
… …
2318/* also detect if there was a timejump, and act accordingly */ 3650/* also detect if there was a timejump, and act accordingly */
2319inline_speed void 3651inline_speed void
2320time_update (EV_P_ ev_tstamp max_block) 3652time_update (EV_P_ ev_tstamp max_block)
2321{ 3653{
2322#if EV_USE_MONOTONIC 3654#if EV_USE_MONOTONIC
2323 if (expect_true (have_monotonic)) 3655 if (ecb_expect_true (have_monotonic))
2324 { 3656 {
2325 int i; 3657 int i;
2326 ev_tstamp odiff = rtmn_diff; 3658 ev_tstamp odiff = rtmn_diff;
2327 3659
2328 mn_now = get_clock (); 3660 mn_now = get_clock ();
2329 3661
2330 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3662 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
2331 /* interpolate in the meantime */ 3663 /* interpolate in the meantime */
2332 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 3664 if (ecb_expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
2333 { 3665 {
2334 ev_rt_now = rtmn_diff + mn_now; 3666 ev_rt_now = rtmn_diff + mn_now;
2335 return; 3667 return;
2336 } 3668 }
2337 3669
… …
2346 * doesn't hurt either as we only do this on time-jumps or 3678 * doesn't hurt either as we only do this on time-jumps or
2347 * in the unlikely event of having been preempted here. 3679 * in the unlikely event of having been preempted here.
2348 */ 3680 */
2349 for (i = 4; --i; ) 3681 for (i = 4; --i; )
2350 { 3682 {
3683 ev_tstamp diff;
2351 rtmn_diff = ev_rt_now - mn_now; 3684 rtmn_diff = ev_rt_now - mn_now;
2352 3685
3686 diff = odiff - rtmn_diff;
3687
2353 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3688 if (ecb_expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2354 return; /* all is well */ 3689 return; /* all is well */
2355 3690
2356 ev_rt_now = ev_time (); 3691 ev_rt_now = ev_time ();
2357 mn_now = get_clock (); 3692 mn_now = get_clock ();
2358 now_floor = mn_now; 3693 now_floor = mn_now;
… …
2367 else 3702 else
2368#endif 3703#endif
2369 { 3704 {
2370 ev_rt_now = ev_time (); 3705 ev_rt_now = ev_time ();
2371 3706
2372 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 3707 if (ecb_expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
2373 { 3708 {
2374 /* adjust timers. this is easy, as the offset is the same for all of them */ 3709 /* adjust timers. this is easy, as the offset is the same for all of them */
2375 timers_reschedule (EV_A_ ev_rt_now - mn_now); 3710 timers_reschedule (EV_A_ ev_rt_now - mn_now);
2376#if EV_PERIODIC_ENABLE 3711#if EV_PERIODIC_ENABLE
2377 periodics_reschedule (EV_A); 3712 periodics_reschedule (EV_A);
… …
2380 3715
2381 mn_now = ev_rt_now; 3716 mn_now = ev_rt_now;
2382 } 3717 }
2383} 3718}
2384 3719
2385void 3720int
2386ev_run (EV_P_ int flags) 3721ev_run (EV_P_ int flags)
2387{ 3722{
2388#if EV_FEATURE_API 3723#if EV_FEATURE_API
2389 ++loop_depth; 3724 ++loop_depth;
2390#endif 3725#endif
… …
2400#if EV_VERIFY >= 2 3735#if EV_VERIFY >= 2
2401 ev_verify (EV_A); 3736 ev_verify (EV_A);
2402#endif 3737#endif
2403 3738
2404#ifndef _WIN32 3739#ifndef _WIN32
2405 if (expect_false (curpid)) /* penalise the forking check even more */ 3740 if (ecb_expect_false (curpid)) /* penalise the forking check even more */
2406 if (expect_false (getpid () != curpid)) 3741 if (ecb_expect_false (getpid () != curpid))
2407 { 3742 {
2408 curpid = getpid (); 3743 curpid = getpid ();
2409 postfork = 1; 3744 postfork = 1;
2410 } 3745 }
2411#endif 3746#endif
2412 3747
2413#if EV_FORK_ENABLE 3748#if EV_FORK_ENABLE
2414 /* we might have forked, so queue fork handlers */ 3749 /* we might have forked, so queue fork handlers */
2415 if (expect_false (postfork)) 3750 if (ecb_expect_false (postfork))
2416 if (forkcnt) 3751 if (forkcnt)
2417 { 3752 {
2418 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3753 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2419 EV_INVOKE_PENDING; 3754 EV_INVOKE_PENDING;
2420 } 3755 }
2421#endif 3756#endif
2422 3757
2423#if EV_PREPARE_ENABLE 3758#if EV_PREPARE_ENABLE
2424 /* queue prepare watchers (and execute them) */ 3759 /* queue prepare watchers (and execute them) */
2425 if (expect_false (preparecnt)) 3760 if (ecb_expect_false (preparecnt))
2426 { 3761 {
2427 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3762 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2428 EV_INVOKE_PENDING; 3763 EV_INVOKE_PENDING;
2429 } 3764 }
2430#endif 3765#endif
2431 3766
2432 if (expect_false (loop_done)) 3767 if (ecb_expect_false (loop_done))
2433 break; 3768 break;
2434 3769
2435 /* we might have forked, so reify kernel state if necessary */ 3770 /* we might have forked, so reify kernel state if necessary */
2436 if (expect_false (postfork)) 3771 if (ecb_expect_false (postfork))
2437 loop_fork (EV_A); 3772 loop_fork (EV_A);
2438 3773
2439 /* update fd-related kernel structures */ 3774 /* update fd-related kernel structures */
2440 fd_reify (EV_A); 3775 fd_reify (EV_A);
2441 3776
… …
2448 ev_tstamp prev_mn_now = mn_now; 3783 ev_tstamp prev_mn_now = mn_now;
2449 3784
2450 /* update time to cancel out callback processing overhead */ 3785 /* update time to cancel out callback processing overhead */
2451 time_update (EV_A_ 1e100); 3786 time_update (EV_A_ 1e100);
2452 3787
3788 /* from now on, we want a pipe-wake-up */
3789 pipe_write_wanted = 1;
3790
3791 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3792
2453 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt))) 3793 if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2454 { 3794 {
2455 waittime = MAX_BLOCKTIME; 3795 waittime = MAX_BLOCKTIME;
2456 3796
2457 if (timercnt) 3797 if (timercnt)
2458 { 3798 {
2459 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3799 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2460 if (waittime > to) waittime = to; 3800 if (waittime > to) waittime = to;
2461 } 3801 }
2462 3802
2463#if EV_PERIODIC_ENABLE 3803#if EV_PERIODIC_ENABLE
2464 if (periodiccnt) 3804 if (periodiccnt)
2465 { 3805 {
2466 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3806 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2467 if (waittime > to) waittime = to; 3807 if (waittime > to) waittime = to;
2468 } 3808 }
2469#endif 3809#endif
2470 3810
2471 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3811 /* don't let timeouts decrease the waittime below timeout_blocktime */
2472 if (expect_false (waittime < timeout_blocktime)) 3812 if (ecb_expect_false (waittime < timeout_blocktime))
2473 waittime = timeout_blocktime; 3813 waittime = timeout_blocktime;
2474 3814
3815 /* at this point, we NEED to wait, so we have to ensure */
3816 /* to pass a minimum nonzero value to the backend */
3817 if (ecb_expect_false (waittime < backend_mintime))
3818 waittime = backend_mintime;
3819
2475 /* extra check because io_blocktime is commonly 0 */ 3820 /* extra check because io_blocktime is commonly 0 */
2476 if (expect_false (io_blocktime)) 3821 if (ecb_expect_false (io_blocktime))
2477 { 3822 {
2478 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3823 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2479 3824
2480 if (sleeptime > waittime - backend_fudge) 3825 if (sleeptime > waittime - backend_mintime)
2481 sleeptime = waittime - backend_fudge; 3826 sleeptime = waittime - backend_mintime;
2482 3827
2483 if (expect_true (sleeptime > 0.)) 3828 if (ecb_expect_true (sleeptime > 0.))
2484 { 3829 {
2485 ev_sleep (sleeptime); 3830 ev_sleep (sleeptime);
2486 waittime -= sleeptime; 3831 waittime -= sleeptime;
2487 } 3832 }
2488 } 3833 }
… …
2493#endif 3838#endif
2494 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */ 3839 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2495 backend_poll (EV_A_ waittime); 3840 backend_poll (EV_A_ waittime);
2496 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 3841 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2497 3842
3843 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3844
3845 ECB_MEMORY_FENCE_ACQUIRE;
3846 if (pipe_write_skipped)
3847 {
3848 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3849 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3850 }
3851
2498 /* update ev_rt_now, do magic */ 3852 /* update ev_rt_now, do magic */
2499 time_update (EV_A_ waittime + sleeptime); 3853 time_update (EV_A_ waittime + sleeptime);
2500 } 3854 }
2501 3855
2502 /* queue pending timers and reschedule them */ 3856 /* queue pending timers and reschedule them */
… …
2510 idle_reify (EV_A); 3864 idle_reify (EV_A);
2511#endif 3865#endif
2512 3866
2513#if EV_CHECK_ENABLE 3867#if EV_CHECK_ENABLE
2514 /* queue check watchers, to be executed first */ 3868 /* queue check watchers, to be executed first */
2515 if (expect_false (checkcnt)) 3869 if (ecb_expect_false (checkcnt))
2516 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3870 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2517#endif 3871#endif
2518 3872
2519 EV_INVOKE_PENDING; 3873 EV_INVOKE_PENDING;
2520 } 3874 }
2521 while (expect_true ( 3875 while (ecb_expect_true (
2522 activecnt 3876 activecnt
2523 && !loop_done 3877 && !loop_done
2524 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT)) 3878 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2525 )); 3879 ));
2526 3880
… …
2528 loop_done = EVBREAK_CANCEL; 3882 loop_done = EVBREAK_CANCEL;
2529 3883
2530#if EV_FEATURE_API 3884#if EV_FEATURE_API
2531 --loop_depth; 3885 --loop_depth;
2532#endif 3886#endif
2533}
2534 3887
3888 return activecnt;
3889}
3890
2535void 3891void
2536ev_break (EV_P_ int how) 3892ev_break (EV_P_ int how) EV_NOEXCEPT
2537{ 3893{
2538 loop_done = how; 3894 loop_done = how;
2539} 3895}
2540 3896
2541void 3897void
2542ev_ref (EV_P) 3898ev_ref (EV_P) EV_NOEXCEPT
2543{ 3899{
2544 ++activecnt; 3900 ++activecnt;
2545} 3901}
2546 3902
2547void 3903void
2548ev_unref (EV_P) 3904ev_unref (EV_P) EV_NOEXCEPT
2549{ 3905{
2550 --activecnt; 3906 --activecnt;
2551} 3907}
2552 3908
2553void 3909void
2554ev_now_update (EV_P) 3910ev_now_update (EV_P) EV_NOEXCEPT
2555{ 3911{
2556 time_update (EV_A_ 1e100); 3912 time_update (EV_A_ 1e100);
2557} 3913}
2558 3914
2559void 3915void
2560ev_suspend (EV_P) 3916ev_suspend (EV_P) EV_NOEXCEPT
2561{ 3917{
2562 ev_now_update (EV_A); 3918 ev_now_update (EV_A);
2563} 3919}
2564 3920
2565void 3921void
2566ev_resume (EV_P) 3922ev_resume (EV_P) EV_NOEXCEPT
2567{ 3923{
2568 ev_tstamp mn_prev = mn_now; 3924 ev_tstamp mn_prev = mn_now;
2569 3925
2570 ev_now_update (EV_A); 3926 ev_now_update (EV_A);
2571 timers_reschedule (EV_A_ mn_now - mn_prev); 3927 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2588inline_size void 3944inline_size void
2589wlist_del (WL *head, WL elem) 3945wlist_del (WL *head, WL elem)
2590{ 3946{
2591 while (*head) 3947 while (*head)
2592 { 3948 {
2593 if (expect_true (*head == elem)) 3949 if (ecb_expect_true (*head == elem))
2594 { 3950 {
2595 *head = elem->next; 3951 *head = elem->next;
2596 break; 3952 break;
2597 } 3953 }
2598 3954
… …
2610 w->pending = 0; 3966 w->pending = 0;
2611 } 3967 }
2612} 3968}
2613 3969
2614int 3970int
2615ev_clear_pending (EV_P_ void *w) 3971ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
2616{ 3972{
2617 W w_ = (W)w; 3973 W w_ = (W)w;
2618 int pending = w_->pending; 3974 int pending = w_->pending;
2619 3975
2620 if (expect_true (pending)) 3976 if (ecb_expect_true (pending))
2621 { 3977 {
2622 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 3978 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2623 p->w = (W)&pending_w; 3979 p->w = (W)&pending_w;
2624 w_->pending = 0; 3980 w_->pending = 0;
2625 return p->events; 3981 return p->events;
… …
2652 w->active = 0; 4008 w->active = 0;
2653} 4009}
2654 4010
2655/*****************************************************************************/ 4011/*****************************************************************************/
2656 4012
2657void noinline 4013ecb_noinline
4014void
2658ev_io_start (EV_P_ ev_io *w) 4015ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
2659{ 4016{
2660 int fd = w->fd; 4017 int fd = w->fd;
2661 4018
2662 if (expect_false (ev_is_active (w))) 4019 if (ecb_expect_false (ev_is_active (w)))
2663 return; 4020 return;
2664 4021
2665 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 4022 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2666 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 4023 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2667 4024
4025#if EV_VERIFY >= 2
4026 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
4027#endif
2668 EV_FREQUENT_CHECK; 4028 EV_FREQUENT_CHECK;
2669 4029
2670 ev_start (EV_A_ (W)w, 1); 4030 ev_start (EV_A_ (W)w, 1);
2671 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 4031 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
2672 wlist_add (&anfds[fd].head, (WL)w); 4032 wlist_add (&anfds[fd].head, (WL)w);
4033
4034 /* common bug, apparently */
4035 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
2673 4036
2674 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 4037 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2675 w->events &= ~EV__IOFDSET; 4038 w->events &= ~EV__IOFDSET;
2676 4039
2677 EV_FREQUENT_CHECK; 4040 EV_FREQUENT_CHECK;
2678} 4041}
2679 4042
2680void noinline 4043ecb_noinline
4044void
2681ev_io_stop (EV_P_ ev_io *w) 4045ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
2682{ 4046{
2683 clear_pending (EV_A_ (W)w); 4047 clear_pending (EV_A_ (W)w);
2684 if (expect_false (!ev_is_active (w))) 4048 if (ecb_expect_false (!ev_is_active (w)))
2685 return; 4049 return;
2686 4050
2687 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 4051 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2688 4052
4053#if EV_VERIFY >= 2
4054 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
4055#endif
2689 EV_FREQUENT_CHECK; 4056 EV_FREQUENT_CHECK;
2690 4057
2691 wlist_del (&anfds[w->fd].head, (WL)w); 4058 wlist_del (&anfds[w->fd].head, (WL)w);
2692 ev_stop (EV_A_ (W)w); 4059 ev_stop (EV_A_ (W)w);
2693 4060
2694 fd_change (EV_A_ w->fd, EV_ANFD_REIFY); 4061 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2695 4062
2696 EV_FREQUENT_CHECK; 4063 EV_FREQUENT_CHECK;
2697} 4064}
2698 4065
2699void noinline 4066ecb_noinline
4067void
2700ev_timer_start (EV_P_ ev_timer *w) 4068ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
2701{ 4069{
2702 if (expect_false (ev_is_active (w))) 4070 if (ecb_expect_false (ev_is_active (w)))
2703 return; 4071 return;
2704 4072
2705 ev_at (w) += mn_now; 4073 ev_at (w) += mn_now;
2706 4074
2707 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 4075 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2708 4076
2709 EV_FREQUENT_CHECK; 4077 EV_FREQUENT_CHECK;
2710 4078
2711 ++timercnt; 4079 ++timercnt;
2712 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 4080 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
2713 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 4081 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
2714 ANHE_w (timers [ev_active (w)]) = (WT)w; 4082 ANHE_w (timers [ev_active (w)]) = (WT)w;
2715 ANHE_at_cache (timers [ev_active (w)]); 4083 ANHE_at_cache (timers [ev_active (w)]);
2716 upheap (timers, ev_active (w)); 4084 upheap (timers, ev_active (w));
2717 4085
2718 EV_FREQUENT_CHECK; 4086 EV_FREQUENT_CHECK;
2719 4087
2720 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 4088 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2721} 4089}
2722 4090
2723void noinline 4091ecb_noinline
4092void
2724ev_timer_stop (EV_P_ ev_timer *w) 4093ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
2725{ 4094{
2726 clear_pending (EV_A_ (W)w); 4095 clear_pending (EV_A_ (W)w);
2727 if (expect_false (!ev_is_active (w))) 4096 if (ecb_expect_false (!ev_is_active (w)))
2728 return; 4097 return;
2729 4098
2730 EV_FREQUENT_CHECK; 4099 EV_FREQUENT_CHECK;
2731 4100
2732 { 4101 {
… …
2734 4103
2735 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 4104 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2736 4105
2737 --timercnt; 4106 --timercnt;
2738 4107
2739 if (expect_true (active < timercnt + HEAP0)) 4108 if (ecb_expect_true (active < timercnt + HEAP0))
2740 { 4109 {
2741 timers [active] = timers [timercnt + HEAP0]; 4110 timers [active] = timers [timercnt + HEAP0];
2742 adjustheap (timers, timercnt, active); 4111 adjustheap (timers, timercnt, active);
2743 } 4112 }
2744 } 4113 }
… …
2748 ev_stop (EV_A_ (W)w); 4117 ev_stop (EV_A_ (W)w);
2749 4118
2750 EV_FREQUENT_CHECK; 4119 EV_FREQUENT_CHECK;
2751} 4120}
2752 4121
2753void noinline 4122ecb_noinline
4123void
2754ev_timer_again (EV_P_ ev_timer *w) 4124ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
2755{ 4125{
2756 EV_FREQUENT_CHECK; 4126 EV_FREQUENT_CHECK;
4127
4128 clear_pending (EV_A_ (W)w);
2757 4129
2758 if (ev_is_active (w)) 4130 if (ev_is_active (w))
2759 { 4131 {
2760 if (w->repeat) 4132 if (w->repeat)
2761 { 4133 {
… …
2774 4146
2775 EV_FREQUENT_CHECK; 4147 EV_FREQUENT_CHECK;
2776} 4148}
2777 4149
2778ev_tstamp 4150ev_tstamp
2779ev_timer_remaining (EV_P_ ev_timer *w) 4151ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
2780{ 4152{
2781 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4153 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2782} 4154}
2783 4155
2784#if EV_PERIODIC_ENABLE 4156#if EV_PERIODIC_ENABLE
2785void noinline 4157ecb_noinline
4158void
2786ev_periodic_start (EV_P_ ev_periodic *w) 4159ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
2787{ 4160{
2788 if (expect_false (ev_is_active (w))) 4161 if (ecb_expect_false (ev_is_active (w)))
2789 return; 4162 return;
2790 4163
2791 if (w->reschedule_cb) 4164 if (w->reschedule_cb)
2792 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4165 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2793 else if (w->interval) 4166 else if (w->interval)
… …
2800 4173
2801 EV_FREQUENT_CHECK; 4174 EV_FREQUENT_CHECK;
2802 4175
2803 ++periodiccnt; 4176 ++periodiccnt;
2804 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4177 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2805 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4178 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
2806 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4179 ANHE_w (periodics [ev_active (w)]) = (WT)w;
2807 ANHE_at_cache (periodics [ev_active (w)]); 4180 ANHE_at_cache (periodics [ev_active (w)]);
2808 upheap (periodics, ev_active (w)); 4181 upheap (periodics, ev_active (w));
2809 4182
2810 EV_FREQUENT_CHECK; 4183 EV_FREQUENT_CHECK;
2811 4184
2812 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4185 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2813} 4186}
2814 4187
2815void noinline 4188ecb_noinline
4189void
2816ev_periodic_stop (EV_P_ ev_periodic *w) 4190ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
2817{ 4191{
2818 clear_pending (EV_A_ (W)w); 4192 clear_pending (EV_A_ (W)w);
2819 if (expect_false (!ev_is_active (w))) 4193 if (ecb_expect_false (!ev_is_active (w)))
2820 return; 4194 return;
2821 4195
2822 EV_FREQUENT_CHECK; 4196 EV_FREQUENT_CHECK;
2823 4197
2824 { 4198 {
… …
2826 4200
2827 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 4201 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2828 4202
2829 --periodiccnt; 4203 --periodiccnt;
2830 4204
2831 if (expect_true (active < periodiccnt + HEAP0)) 4205 if (ecb_expect_true (active < periodiccnt + HEAP0))
2832 { 4206 {
2833 periodics [active] = periodics [periodiccnt + HEAP0]; 4207 periodics [active] = periodics [periodiccnt + HEAP0];
2834 adjustheap (periodics, periodiccnt, active); 4208 adjustheap (periodics, periodiccnt, active);
2835 } 4209 }
2836 } 4210 }
… …
2838 ev_stop (EV_A_ (W)w); 4212 ev_stop (EV_A_ (W)w);
2839 4213
2840 EV_FREQUENT_CHECK; 4214 EV_FREQUENT_CHECK;
2841} 4215}
2842 4216
2843void noinline 4217ecb_noinline
4218void
2844ev_periodic_again (EV_P_ ev_periodic *w) 4219ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
2845{ 4220{
2846 /* TODO: use adjustheap and recalculation */ 4221 /* TODO: use adjustheap and recalculation */
2847 ev_periodic_stop (EV_A_ w); 4222 ev_periodic_stop (EV_A_ w);
2848 ev_periodic_start (EV_A_ w); 4223 ev_periodic_start (EV_A_ w);
2849} 4224}
… …
2853# define SA_RESTART 0 4228# define SA_RESTART 0
2854#endif 4229#endif
2855 4230
2856#if EV_SIGNAL_ENABLE 4231#if EV_SIGNAL_ENABLE
2857 4232
2858void noinline 4233ecb_noinline
4234void
2859ev_signal_start (EV_P_ ev_signal *w) 4235ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
2860{ 4236{
2861 if (expect_false (ev_is_active (w))) 4237 if (ecb_expect_false (ev_is_active (w)))
2862 return; 4238 return;
2863 4239
2864 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4240 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2865 4241
2866#if EV_MULTIPLICITY 4242#if EV_MULTIPLICITY
2867 assert (("libev: a signal must not be attached to two different loops", 4243 assert (("libev: a signal must not be attached to two different loops",
2868 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4244 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2869 4245
2870 signals [w->signum - 1].loop = EV_A; 4246 signals [w->signum - 1].loop = EV_A;
4247 ECB_MEMORY_FENCE_RELEASE;
2871#endif 4248#endif
2872 4249
2873 EV_FREQUENT_CHECK; 4250 EV_FREQUENT_CHECK;
2874 4251
2875#if EV_USE_SIGNALFD 4252#if EV_USE_SIGNALFD
… …
2934 } 4311 }
2935 4312
2936 EV_FREQUENT_CHECK; 4313 EV_FREQUENT_CHECK;
2937} 4314}
2938 4315
2939void noinline 4316ecb_noinline
4317void
2940ev_signal_stop (EV_P_ ev_signal *w) 4318ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
2941{ 4319{
2942 clear_pending (EV_A_ (W)w); 4320 clear_pending (EV_A_ (W)w);
2943 if (expect_false (!ev_is_active (w))) 4321 if (ecb_expect_false (!ev_is_active (w)))
2944 return; 4322 return;
2945 4323
2946 EV_FREQUENT_CHECK; 4324 EV_FREQUENT_CHECK;
2947 4325
2948 wlist_del (&signals [w->signum - 1].head, (WL)w); 4326 wlist_del (&signals [w->signum - 1].head, (WL)w);
… …
2976#endif 4354#endif
2977 4355
2978#if EV_CHILD_ENABLE 4356#if EV_CHILD_ENABLE
2979 4357
2980void 4358void
2981ev_child_start (EV_P_ ev_child *w) 4359ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
2982{ 4360{
2983#if EV_MULTIPLICITY 4361#if EV_MULTIPLICITY
2984 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4362 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2985#endif 4363#endif
2986 if (expect_false (ev_is_active (w))) 4364 if (ecb_expect_false (ev_is_active (w)))
2987 return; 4365 return;
2988 4366
2989 EV_FREQUENT_CHECK; 4367 EV_FREQUENT_CHECK;
2990 4368
2991 ev_start (EV_A_ (W)w, 1); 4369 ev_start (EV_A_ (W)w, 1);
… …
2993 4371
2994 EV_FREQUENT_CHECK; 4372 EV_FREQUENT_CHECK;
2995} 4373}
2996 4374
2997void 4375void
2998ev_child_stop (EV_P_ ev_child *w) 4376ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
2999{ 4377{
3000 clear_pending (EV_A_ (W)w); 4378 clear_pending (EV_A_ (W)w);
3001 if (expect_false (!ev_is_active (w))) 4379 if (ecb_expect_false (!ev_is_active (w)))
3002 return; 4380 return;
3003 4381
3004 EV_FREQUENT_CHECK; 4382 EV_FREQUENT_CHECK;
3005 4383
3006 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w); 4384 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
… …
3020 4398
3021#define DEF_STAT_INTERVAL 5.0074891 4399#define DEF_STAT_INTERVAL 5.0074891
3022#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4400#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
3023#define MIN_STAT_INTERVAL 0.1074891 4401#define MIN_STAT_INTERVAL 0.1074891
3024 4402
3025static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4403ecb_noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
3026 4404
3027#if EV_USE_INOTIFY 4405#if EV_USE_INOTIFY
3028 4406
3029/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ 4407/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3030# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4408# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3031 4409
3032static void noinline 4410ecb_noinline
4411static void
3033infy_add (EV_P_ ev_stat *w) 4412infy_add (EV_P_ ev_stat *w)
3034{ 4413{
3035 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); 4414 w->wd = inotify_add_watch (fs_fd, w->path,
4415 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4416 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4417 | IN_DONT_FOLLOW | IN_MASK_ADD);
3036 4418
3037 if (w->wd >= 0) 4419 if (w->wd >= 0)
3038 { 4420 {
3039 struct statfs sfs; 4421 struct statfs sfs;
3040 4422
… …
3044 4426
3045 if (!fs_2625) 4427 if (!fs_2625)
3046 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4428 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3047 else if (!statfs (w->path, &sfs) 4429 else if (!statfs (w->path, &sfs)
3048 && (sfs.f_type == 0x1373 /* devfs */ 4430 && (sfs.f_type == 0x1373 /* devfs */
4431 || sfs.f_type == 0x4006 /* fat */
4432 || sfs.f_type == 0x4d44 /* msdos */
3049 || sfs.f_type == 0xEF53 /* ext2/3 */ 4433 || sfs.f_type == 0xEF53 /* ext2/3 */
4434 || sfs.f_type == 0x72b6 /* jffs2 */
4435 || sfs.f_type == 0x858458f6 /* ramfs */
4436 || sfs.f_type == 0x5346544e /* ntfs */
3050 || sfs.f_type == 0x3153464a /* jfs */ 4437 || sfs.f_type == 0x3153464a /* jfs */
4438 || sfs.f_type == 0x9123683e /* btrfs */
3051 || sfs.f_type == 0x52654973 /* reiser3 */ 4439 || sfs.f_type == 0x52654973 /* reiser3 */
3052 || sfs.f_type == 0x01021994 /* tempfs */ 4440 || sfs.f_type == 0x01021994 /* tmpfs */
3053 || sfs.f_type == 0x58465342 /* xfs */)) 4441 || sfs.f_type == 0x58465342 /* xfs */))
3054 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4442 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3055 else 4443 else
3056 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4444 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
3057 } 4445 }
… …
3078 if (!pend || pend == path) 4466 if (!pend || pend == path)
3079 break; 4467 break;
3080 4468
3081 *pend = 0; 4469 *pend = 0;
3082 w->wd = inotify_add_watch (fs_fd, path, mask); 4470 w->wd = inotify_add_watch (fs_fd, path, mask);
3083 } 4471 }
3084 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 4472 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
3085 } 4473 }
3086 } 4474 }
3087 4475
3088 if (w->wd >= 0) 4476 if (w->wd >= 0)
… …
3092 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4480 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3093 ev_timer_again (EV_A_ &w->timer); 4481 ev_timer_again (EV_A_ &w->timer);
3094 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4482 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3095} 4483}
3096 4484
3097static void noinline 4485ecb_noinline
4486static void
3098infy_del (EV_P_ ev_stat *w) 4487infy_del (EV_P_ ev_stat *w)
3099{ 4488{
3100 int slot; 4489 int slot;
3101 int wd = w->wd; 4490 int wd = w->wd;
3102 4491
… …
3109 4498
3110 /* remove this watcher, if others are watching it, they will rearm */ 4499 /* remove this watcher, if others are watching it, they will rearm */
3111 inotify_rm_watch (fs_fd, wd); 4500 inotify_rm_watch (fs_fd, wd);
3112} 4501}
3113 4502
3114static void noinline 4503ecb_noinline
4504static void
3115infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4505infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
3116{ 4506{
3117 if (slot < 0) 4507 if (slot < 0)
3118 /* overflow, need to check for all hash slots */ 4508 /* overflow, need to check for all hash slots */
3119 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4509 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
3155 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4545 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3156 ofs += sizeof (struct inotify_event) + ev->len; 4546 ofs += sizeof (struct inotify_event) + ev->len;
3157 } 4547 }
3158} 4548}
3159 4549
3160inline_size void 4550inline_size ecb_cold
4551void
3161ev_check_2625 (EV_P) 4552ev_check_2625 (EV_P)
3162{ 4553{
3163 /* kernels < 2.6.25 are borked 4554 /* kernels < 2.6.25 are borked
3164 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4555 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3165 */ 4556 */
… …
3170} 4561}
3171 4562
3172inline_size int 4563inline_size int
3173infy_newfd (void) 4564infy_newfd (void)
3174{ 4565{
3175#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4566#if defined IN_CLOEXEC && defined IN_NONBLOCK
3176 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4567 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3177 if (fd >= 0) 4568 if (fd >= 0)
3178 return fd; 4569 return fd;
3179#endif 4570#endif
3180 return inotify_init (); 4571 return inotify_init ();
… …
3255#else 4646#else
3256# define EV_LSTAT(p,b) lstat (p, b) 4647# define EV_LSTAT(p,b) lstat (p, b)
3257#endif 4648#endif
3258 4649
3259void 4650void
3260ev_stat_stat (EV_P_ ev_stat *w) 4651ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
3261{ 4652{
3262 if (lstat (w->path, &w->attr) < 0) 4653 if (lstat (w->path, &w->attr) < 0)
3263 w->attr.st_nlink = 0; 4654 w->attr.st_nlink = 0;
3264 else if (!w->attr.st_nlink) 4655 else if (!w->attr.st_nlink)
3265 w->attr.st_nlink = 1; 4656 w->attr.st_nlink = 1;
3266} 4657}
3267 4658
3268static void noinline 4659ecb_noinline
4660static void
3269stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4661stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3270{ 4662{
3271 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4663 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3272 4664
3273 ev_statdata prev = w->attr; 4665 ev_statdata prev = w->attr;
… …
3304 ev_feed_event (EV_A_ w, EV_STAT); 4696 ev_feed_event (EV_A_ w, EV_STAT);
3305 } 4697 }
3306} 4698}
3307 4699
3308void 4700void
3309ev_stat_start (EV_P_ ev_stat *w) 4701ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
3310{ 4702{
3311 if (expect_false (ev_is_active (w))) 4703 if (ecb_expect_false (ev_is_active (w)))
3312 return; 4704 return;
3313 4705
3314 ev_stat_stat (EV_A_ w); 4706 ev_stat_stat (EV_A_ w);
3315 4707
3316 if (w->interval < MIN_STAT_INTERVAL && w->interval) 4708 if (w->interval < MIN_STAT_INTERVAL && w->interval)
… …
3335 4727
3336 EV_FREQUENT_CHECK; 4728 EV_FREQUENT_CHECK;
3337} 4729}
3338 4730
3339void 4731void
3340ev_stat_stop (EV_P_ ev_stat *w) 4732ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
3341{ 4733{
3342 clear_pending (EV_A_ (W)w); 4734 clear_pending (EV_A_ (W)w);
3343 if (expect_false (!ev_is_active (w))) 4735 if (ecb_expect_false (!ev_is_active (w)))
3344 return; 4736 return;
3345 4737
3346 EV_FREQUENT_CHECK; 4738 EV_FREQUENT_CHECK;
3347 4739
3348#if EV_USE_INOTIFY 4740#if EV_USE_INOTIFY
… …
3361} 4753}
3362#endif 4754#endif
3363 4755
3364#if EV_IDLE_ENABLE 4756#if EV_IDLE_ENABLE
3365void 4757void
3366ev_idle_start (EV_P_ ev_idle *w) 4758ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
3367{ 4759{
3368 if (expect_false (ev_is_active (w))) 4760 if (ecb_expect_false (ev_is_active (w)))
3369 return; 4761 return;
3370 4762
3371 pri_adjust (EV_A_ (W)w); 4763 pri_adjust (EV_A_ (W)w);
3372 4764
3373 EV_FREQUENT_CHECK; 4765 EV_FREQUENT_CHECK;
… …
3376 int active = ++idlecnt [ABSPRI (w)]; 4768 int active = ++idlecnt [ABSPRI (w)];
3377 4769
3378 ++idleall; 4770 ++idleall;
3379 ev_start (EV_A_ (W)w, active); 4771 ev_start (EV_A_ (W)w, active);
3380 4772
3381 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 4773 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
3382 idles [ABSPRI (w)][active - 1] = w; 4774 idles [ABSPRI (w)][active - 1] = w;
3383 } 4775 }
3384 4776
3385 EV_FREQUENT_CHECK; 4777 EV_FREQUENT_CHECK;
3386} 4778}
3387 4779
3388void 4780void
3389ev_idle_stop (EV_P_ ev_idle *w) 4781ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
3390{ 4782{
3391 clear_pending (EV_A_ (W)w); 4783 clear_pending (EV_A_ (W)w);
3392 if (expect_false (!ev_is_active (w))) 4784 if (ecb_expect_false (!ev_is_active (w)))
3393 return; 4785 return;
3394 4786
3395 EV_FREQUENT_CHECK; 4787 EV_FREQUENT_CHECK;
3396 4788
3397 { 4789 {
… …
3408} 4800}
3409#endif 4801#endif
3410 4802
3411#if EV_PREPARE_ENABLE 4803#if EV_PREPARE_ENABLE
3412void 4804void
3413ev_prepare_start (EV_P_ ev_prepare *w) 4805ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
3414{ 4806{
3415 if (expect_false (ev_is_active (w))) 4807 if (ecb_expect_false (ev_is_active (w)))
3416 return; 4808 return;
3417 4809
3418 EV_FREQUENT_CHECK; 4810 EV_FREQUENT_CHECK;
3419 4811
3420 ev_start (EV_A_ (W)w, ++preparecnt); 4812 ev_start (EV_A_ (W)w, ++preparecnt);
3421 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4813 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
3422 prepares [preparecnt - 1] = w; 4814 prepares [preparecnt - 1] = w;
3423 4815
3424 EV_FREQUENT_CHECK; 4816 EV_FREQUENT_CHECK;
3425} 4817}
3426 4818
3427void 4819void
3428ev_prepare_stop (EV_P_ ev_prepare *w) 4820ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
3429{ 4821{
3430 clear_pending (EV_A_ (W)w); 4822 clear_pending (EV_A_ (W)w);
3431 if (expect_false (!ev_is_active (w))) 4823 if (ecb_expect_false (!ev_is_active (w)))
3432 return; 4824 return;
3433 4825
3434 EV_FREQUENT_CHECK; 4826 EV_FREQUENT_CHECK;
3435 4827
3436 { 4828 {
… …
3446} 4838}
3447#endif 4839#endif
3448 4840
3449#if EV_CHECK_ENABLE 4841#if EV_CHECK_ENABLE
3450void 4842void
3451ev_check_start (EV_P_ ev_check *w) 4843ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
3452{ 4844{
3453 if (expect_false (ev_is_active (w))) 4845 if (ecb_expect_false (ev_is_active (w)))
3454 return; 4846 return;
3455 4847
3456 EV_FREQUENT_CHECK; 4848 EV_FREQUENT_CHECK;
3457 4849
3458 ev_start (EV_A_ (W)w, ++checkcnt); 4850 ev_start (EV_A_ (W)w, ++checkcnt);
3459 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 4851 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
3460 checks [checkcnt - 1] = w; 4852 checks [checkcnt - 1] = w;
3461 4853
3462 EV_FREQUENT_CHECK; 4854 EV_FREQUENT_CHECK;
3463} 4855}
3464 4856
3465void 4857void
3466ev_check_stop (EV_P_ ev_check *w) 4858ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
3467{ 4859{
3468 clear_pending (EV_A_ (W)w); 4860 clear_pending (EV_A_ (W)w);
3469 if (expect_false (!ev_is_active (w))) 4861 if (ecb_expect_false (!ev_is_active (w)))
3470 return; 4862 return;
3471 4863
3472 EV_FREQUENT_CHECK; 4864 EV_FREQUENT_CHECK;
3473 4865
3474 { 4866 {
… …
3483 EV_FREQUENT_CHECK; 4875 EV_FREQUENT_CHECK;
3484} 4876}
3485#endif 4877#endif
3486 4878
3487#if EV_EMBED_ENABLE 4879#if EV_EMBED_ENABLE
3488void noinline 4880ecb_noinline
4881void
3489ev_embed_sweep (EV_P_ ev_embed *w) 4882ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
3490{ 4883{
3491 ev_run (w->other, EVRUN_NOWAIT); 4884 ev_run (w->other, EVRUN_NOWAIT);
3492} 4885}
3493 4886
3494static void 4887static void
… …
3542 ev_idle_stop (EV_A_ idle); 4935 ev_idle_stop (EV_A_ idle);
3543} 4936}
3544#endif 4937#endif
3545 4938
3546void 4939void
3547ev_embed_start (EV_P_ ev_embed *w) 4940ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
3548{ 4941{
3549 if (expect_false (ev_is_active (w))) 4942 if (ecb_expect_false (ev_is_active (w)))
3550 return; 4943 return;
3551 4944
3552 { 4945 {
3553 EV_P = w->other; 4946 EV_P = w->other;
3554 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4947 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
… …
3573 4966
3574 EV_FREQUENT_CHECK; 4967 EV_FREQUENT_CHECK;
3575} 4968}
3576 4969
3577void 4970void
3578ev_embed_stop (EV_P_ ev_embed *w) 4971ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
3579{ 4972{
3580 clear_pending (EV_A_ (W)w); 4973 clear_pending (EV_A_ (W)w);
3581 if (expect_false (!ev_is_active (w))) 4974 if (ecb_expect_false (!ev_is_active (w)))
3582 return; 4975 return;
3583 4976
3584 EV_FREQUENT_CHECK; 4977 EV_FREQUENT_CHECK;
3585 4978
3586 ev_io_stop (EV_A_ &w->io); 4979 ev_io_stop (EV_A_ &w->io);
… …
3593} 4986}
3594#endif 4987#endif
3595 4988
3596#if EV_FORK_ENABLE 4989#if EV_FORK_ENABLE
3597void 4990void
3598ev_fork_start (EV_P_ ev_fork *w) 4991ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
3599{ 4992{
3600 if (expect_false (ev_is_active (w))) 4993 if (ecb_expect_false (ev_is_active (w)))
3601 return; 4994 return;
3602 4995
3603 EV_FREQUENT_CHECK; 4996 EV_FREQUENT_CHECK;
3604 4997
3605 ev_start (EV_A_ (W)w, ++forkcnt); 4998 ev_start (EV_A_ (W)w, ++forkcnt);
3606 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 4999 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
3607 forks [forkcnt - 1] = w; 5000 forks [forkcnt - 1] = w;
3608 5001
3609 EV_FREQUENT_CHECK; 5002 EV_FREQUENT_CHECK;
3610} 5003}
3611 5004
3612void 5005void
3613ev_fork_stop (EV_P_ ev_fork *w) 5006ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
3614{ 5007{
3615 clear_pending (EV_A_ (W)w); 5008 clear_pending (EV_A_ (W)w);
3616 if (expect_false (!ev_is_active (w))) 5009 if (ecb_expect_false (!ev_is_active (w)))
3617 return; 5010 return;
3618 5011
3619 EV_FREQUENT_CHECK; 5012 EV_FREQUENT_CHECK;
3620 5013
3621 { 5014 {
… …
3631} 5024}
3632#endif 5025#endif
3633 5026
3634#if EV_CLEANUP_ENABLE 5027#if EV_CLEANUP_ENABLE
3635void 5028void
3636ev_cleanup_start (EV_P_ ev_cleanup *w) 5029ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
3637{ 5030{
3638 if (expect_false (ev_is_active (w))) 5031 if (ecb_expect_false (ev_is_active (w)))
3639 return; 5032 return;
3640 5033
3641 EV_FREQUENT_CHECK; 5034 EV_FREQUENT_CHECK;
3642 5035
3643 ev_start (EV_A_ (W)w, ++cleanupcnt); 5036 ev_start (EV_A_ (W)w, ++cleanupcnt);
3644 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2); 5037 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
3645 cleanups [cleanupcnt - 1] = w; 5038 cleanups [cleanupcnt - 1] = w;
3646 5039
3647 /* cleanup watchers should never keep a refcount on the loop */ 5040 /* cleanup watchers should never keep a refcount on the loop */
3648 ev_unref (EV_A); 5041 ev_unref (EV_A);
3649 EV_FREQUENT_CHECK; 5042 EV_FREQUENT_CHECK;
3650} 5043}
3651 5044
3652void 5045void
3653ev_cleanup_stop (EV_P_ ev_cleanup *w) 5046ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
3654{ 5047{
3655 clear_pending (EV_A_ (W)w); 5048 clear_pending (EV_A_ (W)w);
3656 if (expect_false (!ev_is_active (w))) 5049 if (ecb_expect_false (!ev_is_active (w)))
3657 return; 5050 return;
3658 5051
3659 EV_FREQUENT_CHECK; 5052 EV_FREQUENT_CHECK;
3660 ev_ref (EV_A); 5053 ev_ref (EV_A);
3661 5054
… …
3672} 5065}
3673#endif 5066#endif
3674 5067
3675#if EV_ASYNC_ENABLE 5068#if EV_ASYNC_ENABLE
3676void 5069void
3677ev_async_start (EV_P_ ev_async *w) 5070ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
3678{ 5071{
3679 if (expect_false (ev_is_active (w))) 5072 if (ecb_expect_false (ev_is_active (w)))
3680 return; 5073 return;
3681 5074
3682 w->sent = 0; 5075 w->sent = 0;
3683 5076
3684 evpipe_init (EV_A); 5077 evpipe_init (EV_A);
3685 5078
3686 EV_FREQUENT_CHECK; 5079 EV_FREQUENT_CHECK;
3687 5080
3688 ev_start (EV_A_ (W)w, ++asynccnt); 5081 ev_start (EV_A_ (W)w, ++asynccnt);
3689 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 5082 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
3690 asyncs [asynccnt - 1] = w; 5083 asyncs [asynccnt - 1] = w;
3691 5084
3692 EV_FREQUENT_CHECK; 5085 EV_FREQUENT_CHECK;
3693} 5086}
3694 5087
3695void 5088void
3696ev_async_stop (EV_P_ ev_async *w) 5089ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
3697{ 5090{
3698 clear_pending (EV_A_ (W)w); 5091 clear_pending (EV_A_ (W)w);
3699 if (expect_false (!ev_is_active (w))) 5092 if (ecb_expect_false (!ev_is_active (w)))
3700 return; 5093 return;
3701 5094
3702 EV_FREQUENT_CHECK; 5095 EV_FREQUENT_CHECK;
3703 5096
3704 { 5097 {
… …
3712 5105
3713 EV_FREQUENT_CHECK; 5106 EV_FREQUENT_CHECK;
3714} 5107}
3715 5108
3716void 5109void
3717ev_async_send (EV_P_ ev_async *w) 5110ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
3718{ 5111{
3719 w->sent = 1; 5112 w->sent = 1;
3720 evpipe_write (EV_A_ &async_pending); 5113 evpipe_write (EV_A_ &async_pending);
3721} 5114}
3722#endif 5115#endif
… …
3759 5152
3760 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5153 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3761} 5154}
3762 5155
3763void 5156void
3764ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 5157ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
3765{ 5158{
3766 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5159 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3767
3768 if (expect_false (!once))
3769 {
3770 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3771 return;
3772 }
3773 5160
3774 once->cb = cb; 5161 once->cb = cb;
3775 once->arg = arg; 5162 once->arg = arg;
3776 5163
3777 ev_init (&once->io, once_cb_io); 5164 ev_init (&once->io, once_cb_io);
… …
3790} 5177}
3791 5178
3792/*****************************************************************************/ 5179/*****************************************************************************/
3793 5180
3794#if EV_WALK_ENABLE 5181#if EV_WALK_ENABLE
5182ecb_cold
3795void 5183void
3796ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 5184ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
3797{ 5185{
3798 int i, j; 5186 int i, j;
3799 ev_watcher_list *wl, *wn; 5187 ev_watcher_list *wl, *wn;
3800 5188
3801 if (types & (EV_IO | EV_EMBED)) 5189 if (types & (EV_IO | EV_EMBED))
… …
3844 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 5232 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3845#endif 5233#endif
3846 5234
3847#if EV_IDLE_ENABLE 5235#if EV_IDLE_ENABLE
3848 if (types & EV_IDLE) 5236 if (types & EV_IDLE)
3849 for (j = NUMPRI; i--; ) 5237 for (j = NUMPRI; j--; )
3850 for (i = idlecnt [j]; i--; ) 5238 for (i = idlecnt [j]; i--; )
3851 cb (EV_A_ EV_IDLE, idles [j][i]); 5239 cb (EV_A_ EV_IDLE, idles [j][i]);
3852#endif 5240#endif
3853 5241
3854#if EV_FORK_ENABLE 5242#if EV_FORK_ENABLE
… …
3907 5295
3908#if EV_MULTIPLICITY 5296#if EV_MULTIPLICITY
3909 #include "ev_wrap.h" 5297 #include "ev_wrap.h"
3910#endif 5298#endif
3911 5299
3912EV_CPP(})
3913

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