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Comparing libev/ev.c (file contents):
Revision 1.343 by root, Fri Apr 2 21:03:46 2010 UTC vs.
Revision 1.505 by root, Wed Jul 10 14:25:35 2019 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009,2010 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007-2019 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
10 * 1. Redistributions of source code must retain the above copyright notice, 10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer. 11 * this list of conditions and the following disclaimer.
12 * 12 *
13 * 2. Redistributions in binary form must reproduce the above copyright 13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the 14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution. 15 * documentation and/or other materials provided with the distribution.
16 * 16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- 18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO 19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- 20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
… …
35 * and other provisions required by the GPL. If you do not delete the 35 * and other provisions required by the GPL. If you do not delete the
36 * provisions above, a recipient may use your version of this file under 36 * provisions above, a recipient may use your version of this file under
37 * either the BSD or the GPL. 37 * either the BSD or the GPL.
38 */ 38 */
39 39
40#ifdef __cplusplus
41extern "C" {
42#endif
43
44/* this big block deduces configuration from config.h */ 40/* this big block deduces configuration from config.h */
45#ifndef EV_STANDALONE 41#ifndef EV_STANDALONE
46# ifdef EV_CONFIG_H 42# ifdef EV_CONFIG_H
47# include EV_CONFIG_H 43# include EV_CONFIG_H
48# else 44# else
49# include "config.h" 45# include "config.h"
46# endif
47
48# if HAVE_FLOOR
49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1
51# endif
50# endif 52# endif
51 53
52# if HAVE_CLOCK_SYSCALL 54# if HAVE_CLOCK_SYSCALL
53# ifndef EV_USE_CLOCK_SYSCALL 55# ifndef EV_USE_CLOCK_SYSCALL
54# define EV_USE_CLOCK_SYSCALL 1 56# define EV_USE_CLOCK_SYSCALL 1
… …
57# endif 59# endif
58# ifndef EV_USE_MONOTONIC 60# ifndef EV_USE_MONOTONIC
59# define EV_USE_MONOTONIC 1 61# define EV_USE_MONOTONIC 1
60# endif 62# endif
61# endif 63# endif
62# elif !defined(EV_USE_CLOCK_SYSCALL) 64# elif !defined EV_USE_CLOCK_SYSCALL
63# define EV_USE_CLOCK_SYSCALL 0 65# define EV_USE_CLOCK_SYSCALL 0
64# endif 66# endif
65 67
66# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
67# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
… …
111# define EV_USE_EPOLL EV_FEATURE_BACKENDS 113# define EV_USE_EPOLL EV_FEATURE_BACKENDS
112# endif 114# endif
113# else 115# else
114# undef EV_USE_EPOLL 116# undef EV_USE_EPOLL
115# define EV_USE_EPOLL 0 117# define EV_USE_EPOLL 0
118# endif
119
120# if HAVE_LINUX_AIO_ABI_H
121# ifndef EV_USE_LINUXAIO
122# define EV_USE_LINUXAIO EV_FEATURE_BACKENDS
123# endif
124# else
125# undef EV_USE_LINUXAIO
126# define EV_USE_LINUXAIO 0
116# endif 127# endif
117 128
118# if HAVE_KQUEUE && HAVE_SYS_EVENT_H 129# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
119# ifndef EV_USE_KQUEUE 130# ifndef EV_USE_KQUEUE
120# define EV_USE_KQUEUE EV_FEATURE_BACKENDS 131# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
… …
160# define EV_USE_EVENTFD 0 171# define EV_USE_EVENTFD 0
161# endif 172# endif
162 173
163#endif 174#endif
164 175
165#include <math.h> 176/* OS X, in its infinite idiocy, actually HARDCODES
177 * a limit of 1024 into their select. Where people have brains,
178 * OS X engineers apparently have a vacuum. Or maybe they were
179 * ordered to have a vacuum, or they do anything for money.
180 * This might help. Or not.
181 * Note that this must be defined early, as other include files
182 * will rely on this define as well.
183 */
184#define _DARWIN_UNLIMITED_SELECT 1
185
166#include <stdlib.h> 186#include <stdlib.h>
167#include <string.h> 187#include <string.h>
168#include <fcntl.h> 188#include <fcntl.h>
169#include <stddef.h> 189#include <stddef.h>
170 190
… …
180 200
181#ifdef EV_H 201#ifdef EV_H
182# include EV_H 202# include EV_H
183#else 203#else
184# include "ev.h" 204# include "ev.h"
205#endif
206
207#if EV_NO_THREADS
208# undef EV_NO_SMP
209# define EV_NO_SMP 1
210# undef ECB_NO_THREADS
211# define ECB_NO_THREADS 1
212#endif
213#if EV_NO_SMP
214# undef EV_NO_SMP
215# define ECB_NO_SMP 1
185#endif 216#endif
186 217
187#ifndef _WIN32 218#ifndef _WIN32
188# include <sys/time.h> 219# include <sys/time.h>
189# include <sys/wait.h> 220# include <sys/wait.h>
190# include <unistd.h> 221# include <unistd.h>
191#else 222#else
192# include <io.h> 223# include <io.h>
193# define WIN32_LEAN_AND_MEAN 224# define WIN32_LEAN_AND_MEAN
225# include <winsock2.h>
194# include <windows.h> 226# include <windows.h>
195# ifndef EV_SELECT_IS_WINSOCKET 227# ifndef EV_SELECT_IS_WINSOCKET
196# define EV_SELECT_IS_WINSOCKET 1 228# define EV_SELECT_IS_WINSOCKET 1
197# endif 229# endif
198# undef EV_AVOID_STDIO 230# undef EV_AVOID_STDIO
199#endif 231#endif
200 232
201/* 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 */
202 234
203/* try to deduce the maximum number of signals on this platform */ 235/* try to deduce the maximum number of signals on this platform */
204#if defined (EV_NSIG) 236#if defined EV_NSIG
205/* use what's provided */ 237/* use what's provided */
206#elif defined (NSIG) 238#elif defined NSIG
207# define EV_NSIG (NSIG) 239# define EV_NSIG (NSIG)
208#elif defined(_NSIG) 240#elif defined _NSIG
209# define EV_NSIG (_NSIG) 241# define EV_NSIG (_NSIG)
210#elif defined (SIGMAX) 242#elif defined SIGMAX
211# define EV_NSIG (SIGMAX+1) 243# define EV_NSIG (SIGMAX+1)
212#elif defined (SIG_MAX) 244#elif defined SIG_MAX
213# define EV_NSIG (SIG_MAX+1) 245# define EV_NSIG (SIG_MAX+1)
214#elif defined (_SIG_MAX) 246#elif defined _SIG_MAX
215# define EV_NSIG (_SIG_MAX+1) 247# define EV_NSIG (_SIG_MAX+1)
216#elif defined (MAXSIG) 248#elif defined MAXSIG
217# define EV_NSIG (MAXSIG+1) 249# define EV_NSIG (MAXSIG+1)
218#elif defined (MAX_SIG) 250#elif defined MAX_SIG
219# define EV_NSIG (MAX_SIG+1) 251# define EV_NSIG (MAX_SIG+1)
220#elif defined (SIGARRAYSIZE) 252#elif defined SIGARRAYSIZE
221# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ 253# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
222#elif defined (_sys_nsig) 254#elif defined _sys_nsig
223# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 255# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
224#else 256#else
225# error "unable to find value for NSIG, please report" 257# define EV_NSIG (8 * sizeof (sigset_t) + 1)
226/* to make it compile regardless, just remove the above line, */ 258#endif
227/* but consider reporting it, too! :) */ 259
228# define EV_NSIG 65 260#ifndef EV_USE_FLOOR
261# define EV_USE_FLOOR 0
229#endif 262#endif
230 263
231#ifndef EV_USE_CLOCK_SYSCALL 264#ifndef EV_USE_CLOCK_SYSCALL
232# if __linux && __GLIBC__ >= 2 265# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
233# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS 266# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
234# else 267# else
235# define EV_USE_CLOCK_SYSCALL 0 268# define EV_USE_CLOCK_SYSCALL 0
236# endif 269# endif
237#endif 270#endif
238 271
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
239#ifndef EV_USE_MONOTONIC 281#ifndef EV_USE_MONOTONIC
240# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 282# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
241# define EV_USE_MONOTONIC EV_FEATURE_OS 283# define EV_USE_MONOTONIC EV_FEATURE_OS
242# else 284# else
243# define EV_USE_MONOTONIC 0 285# define EV_USE_MONOTONIC 0
244# endif 286# endif
245#endif 287#endif
… …
282 324
283#ifndef EV_USE_PORT 325#ifndef EV_USE_PORT
284# define EV_USE_PORT 0 326# define EV_USE_PORT 0
285#endif 327#endif
286 328
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
287#ifndef EV_USE_INOTIFY 345#ifndef EV_USE_INOTIFY
288# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 346# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
289# define EV_USE_INOTIFY EV_FEATURE_OS 347# define EV_USE_INOTIFY EV_FEATURE_OS
290# else 348# else
291# define EV_USE_INOTIFY 0 349# define EV_USE_INOTIFY 0
… …
332 390
333#ifndef EV_HEAP_CACHE_AT 391#ifndef EV_HEAP_CACHE_AT
334# define EV_HEAP_CACHE_AT EV_FEATURE_DATA 392# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
335#endif 393#endif
336 394
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
337/* 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, */
338/* which makes programs even slower. might work on other unices, too. */ 412/* which makes programs even slower. might work on other unices, too. */
339#if EV_USE_CLOCK_SYSCALL 413#if EV_USE_CLOCK_SYSCALL
340# include <syscall.h> 414# include <sys/syscall.h>
341# ifdef SYS_clock_gettime 415# ifdef SYS_clock_gettime
342# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 416# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
343# undef EV_USE_MONOTONIC 417# undef EV_USE_MONOTONIC
344# define EV_USE_MONOTONIC 1 418# define EV_USE_MONOTONIC 1
419# define EV_NEED_SYSCALL 1
345# else 420# else
346# undef EV_USE_CLOCK_SYSCALL 421# undef EV_USE_CLOCK_SYSCALL
347# define EV_USE_CLOCK_SYSCALL 0 422# define EV_USE_CLOCK_SYSCALL 0
348# endif 423# endif
349#endif 424#endif
350 425
351/* 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 */
352 427
353#ifdef _AIX
354/* AIX has a completely broken poll.h header */
355# undef EV_USE_POLL
356# define EV_USE_POLL 0
357#endif
358
359#ifndef CLOCK_MONOTONIC 428#ifndef CLOCK_MONOTONIC
360# undef EV_USE_MONOTONIC 429# undef EV_USE_MONOTONIC
361# define EV_USE_MONOTONIC 0 430# define EV_USE_MONOTONIC 0
362#endif 431#endif
363 432
… …
370# undef EV_USE_INOTIFY 439# undef EV_USE_INOTIFY
371# define EV_USE_INOTIFY 0 440# define EV_USE_INOTIFY 0
372#endif 441#endif
373 442
374#if !EV_USE_NANOSLEEP 443#if !EV_USE_NANOSLEEP
375# ifndef _WIN32 444/* hp-ux has it in sys/time.h, which we unconditionally include above */
445# if !defined _WIN32 && !defined __hpux
376# include <sys/select.h> 446# include <sys/select.h>
377# endif 447# endif
378#endif 448#endif
379 449
450#if EV_USE_LINUXAIO
451# include <sys/syscall.h>
452# if SYS_io_getevents && EV_USE_EPOLL /* linuxaio backend requires epoll backend */
453# define EV_NEED_SYSCALL 1
454# else
455# undef EV_USE_LINUXAIO
456# define EV_USE_LINUXAIO 0
457# endif
458#endif
459
460#if EV_USE_IOURING
461# include <sys/syscall.h>
462# if !SYS_io_uring_setup && __linux && !__alpha
463# define SYS_io_uring_setup 425
464# define SYS_io_uring_enter 426
465# define SYS_io_uring_wregister 427
466# endif
467# if SYS_io_uring_setup && EV_USE_EPOLL /* iouring backend requires epoll backend */
468# define EV_NEED_SYSCALL 1
469# else
470# undef EV_USE_IOURING
471# define EV_USE_IOURING 0
472# endif
473#endif
474
380#if EV_USE_INOTIFY 475#if EV_USE_INOTIFY
381# include <sys/utsname.h>
382# include <sys/statfs.h> 476# include <sys/statfs.h>
383# include <sys/inotify.h> 477# include <sys/inotify.h>
384/* 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 */
385# ifndef IN_DONT_FOLLOW 479# ifndef IN_DONT_FOLLOW
386# undef EV_USE_INOTIFY 480# undef EV_USE_INOTIFY
387# define EV_USE_INOTIFY 0 481# define EV_USE_INOTIFY 0
388# endif 482# endif
389#endif
390
391#if EV_SELECT_IS_WINSOCKET
392# include <winsock.h>
393#endif 483#endif
394 484
395#if EV_USE_EVENTFD 485#if EV_USE_EVENTFD
396/* 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 */
397# include <stdint.h> 487# include <stdint.h>
… …
403# define EFD_CLOEXEC O_CLOEXEC 493# define EFD_CLOEXEC O_CLOEXEC
404# else 494# else
405# define EFD_CLOEXEC 02000000 495# define EFD_CLOEXEC 02000000
406# endif 496# endif
407# endif 497# endif
408# ifdef __cplusplus
409extern "C" {
410# endif
411int (eventfd) (unsigned int initval, int flags); 498EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
412# ifdef __cplusplus
413}
414# endif
415#endif 499#endif
416 500
417#if EV_USE_SIGNALFD 501#if EV_USE_SIGNALFD
418/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 502/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
419# include <stdint.h> 503# include <stdint.h>
… …
425# define SFD_CLOEXEC O_CLOEXEC 509# define SFD_CLOEXEC O_CLOEXEC
426# else 510# else
427# define SFD_CLOEXEC 02000000 511# define SFD_CLOEXEC 02000000
428# endif 512# endif
429# endif 513# endif
430# ifdef __cplusplus
431extern "C" {
432# endif
433int signalfd (int fd, const sigset_t *mask, int flags); 514EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
434 515
435struct signalfd_siginfo 516struct signalfd_siginfo
436{ 517{
437 uint32_t ssi_signo; 518 uint32_t ssi_signo;
438 char pad[128 - sizeof (uint32_t)]; 519 char pad[128 - sizeof (uint32_t)];
439}; 520};
440# ifdef __cplusplus
441}
442# endif 521#endif
443#endif
444 522
445 523/*****************************************************************************/
446/**/
447 524
448#if EV_VERIFY >= 3 525#if EV_VERIFY >= 3
449# define EV_FREQUENT_CHECK ev_verify (EV_A) 526# define EV_FREQUENT_CHECK ev_verify (EV_A)
450#else 527#else
451# define EV_FREQUENT_CHECK do { } while (0) 528# define EV_FREQUENT_CHECK do { } while (0)
452#endif 529#endif
453 530
454/* 531/*
455 * This is used to avoid floating point rounding problems. 532 * This is used to work around floating point rounding problems.
456 * It is added to ev_rt_now when scheduling periodics
457 * to ensure progress, time-wise, even when rounding
458 * errors are against us.
459 * This value is good at least till the year 4000. 533 * This value is good at least till the year 4000.
460 * Better solutions welcome.
461 */ 534 */
462#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 535#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
536/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
463 537
464#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 538#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
465#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 539#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
466 540
541/* find a portable timestamp that is "always" in the future but fits into time_t.
542 * this is quite hard, and we are mostly guessing - we handle 32 bit signed/unsigned time_t,
543 * and sizes larger than 32 bit, and maybe the unlikely floating point time_t */
544#define EV_TSTAMP_HUGE \
545 (sizeof (time_t) >= 8 ? 10000000000000. \
546 : 0 < (time_t)4294967295 ? 4294967295. \
547 : 2147483647.) \
548
549#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
550#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
551#define EV_TV_GET(tv) ((tv).tv_sec + (tv).tv_usec * 1e6)
552#define EV_TS_GET(ts) ((ts).tv_sec + (ts).tv_nsec * 1e9)
553
554/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
555/* ECB.H BEGIN */
556/*
557 * libecb - http://software.schmorp.de/pkg/libecb
558 *
559 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
560 * Copyright (©) 2011 Emanuele Giaquinta
561 * All rights reserved.
562 *
563 * Redistribution and use in source and binary forms, with or without modifica-
564 * tion, are permitted provided that the following conditions are met:
565 *
566 * 1. Redistributions of source code must retain the above copyright notice,
567 * this list of conditions and the following disclaimer.
568 *
569 * 2. Redistributions in binary form must reproduce the above copyright
570 * notice, this list of conditions and the following disclaimer in the
571 * documentation and/or other materials provided with the distribution.
572 *
573 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
574 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
575 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
576 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
577 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
578 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
579 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
580 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
581 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
582 * OF THE POSSIBILITY OF SUCH DAMAGE.
583 *
584 * Alternatively, the contents of this file may be used under the terms of
585 * the GNU General Public License ("GPL") version 2 or any later version,
586 * in which case the provisions of the GPL are applicable instead of
587 * the above. If you wish to allow the use of your version of this file
588 * only under the terms of the GPL and not to allow others to use your
589 * version of this file under the BSD license, indicate your decision
590 * by deleting the provisions above and replace them with the notice
591 * and other provisions required by the GPL. If you do not delete the
592 * provisions above, a recipient may use your version of this file under
593 * either the BSD or the GPL.
594 */
595
596#ifndef ECB_H
597#define ECB_H
598
599/* 16 bits major, 16 bits minor */
600#define ECB_VERSION 0x00010006
601
602#ifdef _WIN32
603 typedef signed char int8_t;
604 typedef unsigned char uint8_t;
605 typedef signed short int16_t;
606 typedef unsigned short uint16_t;
607 typedef signed int int32_t;
608 typedef unsigned int uint32_t;
467#if __GNUC__ >= 4 609 #if __GNUC__
468# define expect(expr,value) __builtin_expect ((expr),(value)) 610 typedef signed long long int64_t;
469# define noinline __attribute__ ((noinline)) 611 typedef unsigned long long uint64_t;
612 #else /* _MSC_VER || __BORLANDC__ */
613 typedef signed __int64 int64_t;
614 typedef unsigned __int64 uint64_t;
615 #endif
616 #ifdef _WIN64
617 #define ECB_PTRSIZE 8
618 typedef uint64_t uintptr_t;
619 typedef int64_t intptr_t;
620 #else
621 #define ECB_PTRSIZE 4
622 typedef uint32_t uintptr_t;
623 typedef int32_t intptr_t;
624 #endif
470#else 625#else
471# define expect(expr,value) (expr) 626 #include <inttypes.h>
472# define noinline 627 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
473# if __STDC_VERSION__ < 199901L && __GNUC__ < 2 628 #define ECB_PTRSIZE 8
474# define inline 629 #else
630 #define ECB_PTRSIZE 4
631 #endif
475# endif 632#endif
633
634#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
635#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
636
637/* work around x32 idiocy by defining proper macros */
638#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
639 #if _ILP32
640 #define ECB_AMD64_X32 1
641 #else
642 #define ECB_AMD64 1
476#endif 643 #endif
644#endif
477 645
646/* many compilers define _GNUC_ to some versions but then only implement
647 * what their idiot authors think are the "more important" extensions,
648 * causing enormous grief in return for some better fake benchmark numbers.
649 * or so.
650 * we try to detect these and simply assume they are not gcc - if they have
651 * an issue with that they should have done it right in the first place.
652 */
653#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
654 #define ECB_GCC_VERSION(major,minor) 0
655#else
656 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
657#endif
658
659#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
660
661#if __clang__ && defined __has_builtin
662 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
663#else
664 #define ECB_CLANG_BUILTIN(x) 0
665#endif
666
667#if __clang__ && defined __has_extension
668 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
669#else
670 #define ECB_CLANG_EXTENSION(x) 0
671#endif
672
673#define ECB_CPP (__cplusplus+0)
674#define ECB_CPP11 (__cplusplus >= 201103L)
675#define ECB_CPP14 (__cplusplus >= 201402L)
676#define ECB_CPP17 (__cplusplus >= 201703L)
677
678#if ECB_CPP
679 #define ECB_C 0
680 #define ECB_STDC_VERSION 0
681#else
682 #define ECB_C 1
683 #define ECB_STDC_VERSION __STDC_VERSION__
684#endif
685
686#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
687#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
688#define ECB_C17 (ECB_STDC_VERSION >= 201710L)
689
690#if ECB_CPP
691 #define ECB_EXTERN_C extern "C"
692 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
693 #define ECB_EXTERN_C_END }
694#else
695 #define ECB_EXTERN_C extern
696 #define ECB_EXTERN_C_BEG
697 #define ECB_EXTERN_C_END
698#endif
699
700/*****************************************************************************/
701
702/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
703/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
704
705#if ECB_NO_THREADS
706 #define ECB_NO_SMP 1
707#endif
708
709#if ECB_NO_SMP
710 #define ECB_MEMORY_FENCE do { } while (0)
711#endif
712
713/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
714#if __xlC__ && ECB_CPP
715 #include <builtins.h>
716#endif
717
718#if 1400 <= _MSC_VER
719 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
720#endif
721
722#ifndef ECB_MEMORY_FENCE
723 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
724 #define ECB_MEMORY_FENCE_RELAXED __asm__ __volatile__ ("" : : : "memory")
725 #if __i386 || __i386__
726 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
727 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
728 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
729 #elif ECB_GCC_AMD64
730 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
731 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
732 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
733 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
734 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
735 #elif defined __ARM_ARCH_2__ \
736 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
737 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
738 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
739 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
740 || defined __ARM_ARCH_5TEJ__
741 /* should not need any, unless running old code on newer cpu - arm doesn't support that */
742 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
743 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
744 || defined __ARM_ARCH_6T2__
745 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
746 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
747 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
748 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
749 #elif __aarch64__
750 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
751 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
752 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
753 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
754 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
755 #elif defined __s390__ || defined __s390x__
756 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
757 #elif defined __mips__
758 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
759 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
760 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
761 #elif defined __alpha__
762 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
763 #elif defined __hppa__
764 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
765 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
766 #elif defined __ia64__
767 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
768 #elif defined __m68k__
769 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
770 #elif defined __m88k__
771 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
772 #elif defined __sh__
773 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
774 #endif
775 #endif
776#endif
777
778#ifndef ECB_MEMORY_FENCE
779 #if ECB_GCC_VERSION(4,7)
780 /* see comment below (stdatomic.h) about the C11 memory model. */
781 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
782 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
783 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
784 #define ECB_MEMORY_FENCE_RELAXED __atomic_thread_fence (__ATOMIC_RELAXED)
785
786 #elif ECB_CLANG_EXTENSION(c_atomic)
787 /* see comment below (stdatomic.h) about the C11 memory model. */
788 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
789 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
790 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
791 #define ECB_MEMORY_FENCE_RELAXED __c11_atomic_thread_fence (__ATOMIC_RELAXED)
792
793 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
794 #define ECB_MEMORY_FENCE __sync_synchronize ()
795 #elif _MSC_VER >= 1500 /* VC++ 2008 */
796 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
797 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
798 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
799 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
800 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
801 #elif _MSC_VER >= 1400 /* VC++ 2005 */
802 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
803 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
804 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
805 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
806 #elif defined _WIN32
807 #include <WinNT.h>
808 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
809 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
810 #include <mbarrier.h>
811 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
812 #define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier ()
813 #define ECB_MEMORY_FENCE_RELEASE __machine_rel_barrier ()
814 #define ECB_MEMORY_FENCE_RELAXED __compiler_barrier ()
815 #elif __xlC__
816 #define ECB_MEMORY_FENCE __sync ()
817 #endif
818#endif
819
820#ifndef ECB_MEMORY_FENCE
821 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
822 /* we assume that these memory fences work on all variables/all memory accesses, */
823 /* not just C11 atomics and atomic accesses */
824 #include <stdatomic.h>
825 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
826 #define ECB_MEMORY_FENCE_ACQUIRE atomic_thread_fence (memory_order_acquire)
827 #define ECB_MEMORY_FENCE_RELEASE atomic_thread_fence (memory_order_release)
828 #endif
829#endif
830
831#ifndef ECB_MEMORY_FENCE
832 #if !ECB_AVOID_PTHREADS
833 /*
834 * if you get undefined symbol references to pthread_mutex_lock,
835 * or failure to find pthread.h, then you should implement
836 * the ECB_MEMORY_FENCE operations for your cpu/compiler
837 * OR provide pthread.h and link against the posix thread library
838 * of your system.
839 */
840 #include <pthread.h>
841 #define ECB_NEEDS_PTHREADS 1
842 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
843
844 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
845 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
846 #endif
847#endif
848
849#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
850 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
851#endif
852
853#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
854 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
855#endif
856
857#if !defined ECB_MEMORY_FENCE_RELAXED && defined ECB_MEMORY_FENCE
858 #define ECB_MEMORY_FENCE_RELAXED ECB_MEMORY_FENCE /* very heavy-handed */
859#endif
860
861/*****************************************************************************/
862
863#if ECB_CPP
864 #define ecb_inline static inline
865#elif ECB_GCC_VERSION(2,5)
866 #define ecb_inline static __inline__
867#elif ECB_C99
868 #define ecb_inline static inline
869#else
870 #define ecb_inline static
871#endif
872
873#if ECB_GCC_VERSION(3,3)
874 #define ecb_restrict __restrict__
875#elif ECB_C99
876 #define ecb_restrict restrict
877#else
878 #define ecb_restrict
879#endif
880
881typedef int ecb_bool;
882
883#define ECB_CONCAT_(a, b) a ## b
884#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
885#define ECB_STRINGIFY_(a) # a
886#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
887#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
888
889#define ecb_function_ ecb_inline
890
891#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
892 #define ecb_attribute(attrlist) __attribute__ (attrlist)
893#else
894 #define ecb_attribute(attrlist)
895#endif
896
897#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
898 #define ecb_is_constant(expr) __builtin_constant_p (expr)
899#else
900 /* possible C11 impl for integral types
901 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
902 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
903
904 #define ecb_is_constant(expr) 0
905#endif
906
907#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
908 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
909#else
910 #define ecb_expect(expr,value) (expr)
911#endif
912
913#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
914 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
915#else
916 #define ecb_prefetch(addr,rw,locality)
917#endif
918
919/* no emulation for ecb_decltype */
920#if ECB_CPP11
921 // older implementations might have problems with decltype(x)::type, work around it
922 template<class T> struct ecb_decltype_t { typedef T type; };
923 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
924#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
925 #define ecb_decltype(x) __typeof__ (x)
926#endif
927
928#if _MSC_VER >= 1300
929 #define ecb_deprecated __declspec (deprecated)
930#else
931 #define ecb_deprecated ecb_attribute ((__deprecated__))
932#endif
933
934#if _MSC_VER >= 1500
935 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
936#elif ECB_GCC_VERSION(4,5)
937 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
938#else
939 #define ecb_deprecated_message(msg) ecb_deprecated
940#endif
941
942#if _MSC_VER >= 1400
943 #define ecb_noinline __declspec (noinline)
944#else
945 #define ecb_noinline ecb_attribute ((__noinline__))
946#endif
947
948#define ecb_unused ecb_attribute ((__unused__))
949#define ecb_const ecb_attribute ((__const__))
950#define ecb_pure ecb_attribute ((__pure__))
951
952#if ECB_C11 || __IBMC_NORETURN
953 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
954 #define ecb_noreturn _Noreturn
955#elif ECB_CPP11
956 #define ecb_noreturn [[noreturn]]
957#elif _MSC_VER >= 1200
958 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
959 #define ecb_noreturn __declspec (noreturn)
960#else
961 #define ecb_noreturn ecb_attribute ((__noreturn__))
962#endif
963
964#if ECB_GCC_VERSION(4,3)
965 #define ecb_artificial ecb_attribute ((__artificial__))
966 #define ecb_hot ecb_attribute ((__hot__))
967 #define ecb_cold ecb_attribute ((__cold__))
968#else
969 #define ecb_artificial
970 #define ecb_hot
971 #define ecb_cold
972#endif
973
974/* put around conditional expressions if you are very sure that the */
975/* expression is mostly true or mostly false. note that these return */
976/* booleans, not the expression. */
478#define expect_false(expr) expect ((expr) != 0, 0) 977#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
479#define expect_true(expr) expect ((expr) != 0, 1) 978#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
979/* for compatibility to the rest of the world */
980#define ecb_likely(expr) ecb_expect_true (expr)
981#define ecb_unlikely(expr) ecb_expect_false (expr)
982
983/* count trailing zero bits and count # of one bits */
984#if ECB_GCC_VERSION(3,4) \
985 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
986 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
987 && ECB_CLANG_BUILTIN(__builtin_popcount))
988 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
989 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
990 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
991 #define ecb_ctz32(x) __builtin_ctz (x)
992 #define ecb_ctz64(x) __builtin_ctzll (x)
993 #define ecb_popcount32(x) __builtin_popcount (x)
994 /* no popcountll */
995#else
996 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
997 ecb_function_ ecb_const int
998 ecb_ctz32 (uint32_t x)
999 {
1000#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1001 unsigned long r;
1002 _BitScanForward (&r, x);
1003 return (int)r;
1004#else
1005 int r = 0;
1006
1007 x &= ~x + 1; /* this isolates the lowest bit */
1008
1009#if ECB_branchless_on_i386
1010 r += !!(x & 0xaaaaaaaa) << 0;
1011 r += !!(x & 0xcccccccc) << 1;
1012 r += !!(x & 0xf0f0f0f0) << 2;
1013 r += !!(x & 0xff00ff00) << 3;
1014 r += !!(x & 0xffff0000) << 4;
1015#else
1016 if (x & 0xaaaaaaaa) r += 1;
1017 if (x & 0xcccccccc) r += 2;
1018 if (x & 0xf0f0f0f0) r += 4;
1019 if (x & 0xff00ff00) r += 8;
1020 if (x & 0xffff0000) r += 16;
1021#endif
1022
1023 return r;
1024#endif
1025 }
1026
1027 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
1028 ecb_function_ ecb_const int
1029 ecb_ctz64 (uint64_t x)
1030 {
1031#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1032 unsigned long r;
1033 _BitScanForward64 (&r, x);
1034 return (int)r;
1035#else
1036 int shift = x & 0xffffffff ? 0 : 32;
1037 return ecb_ctz32 (x >> shift) + shift;
1038#endif
1039 }
1040
1041 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
1042 ecb_function_ ecb_const int
1043 ecb_popcount32 (uint32_t x)
1044 {
1045 x -= (x >> 1) & 0x55555555;
1046 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
1047 x = ((x >> 4) + x) & 0x0f0f0f0f;
1048 x *= 0x01010101;
1049
1050 return x >> 24;
1051 }
1052
1053 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
1054 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
1055 {
1056#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1057 unsigned long r;
1058 _BitScanReverse (&r, x);
1059 return (int)r;
1060#else
1061 int r = 0;
1062
1063 if (x >> 16) { x >>= 16; r += 16; }
1064 if (x >> 8) { x >>= 8; r += 8; }
1065 if (x >> 4) { x >>= 4; r += 4; }
1066 if (x >> 2) { x >>= 2; r += 2; }
1067 if (x >> 1) { r += 1; }
1068
1069 return r;
1070#endif
1071 }
1072
1073 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
1074 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
1075 {
1076#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1077 unsigned long r;
1078 _BitScanReverse64 (&r, x);
1079 return (int)r;
1080#else
1081 int r = 0;
1082
1083 if (x >> 32) { x >>= 32; r += 32; }
1084
1085 return r + ecb_ld32 (x);
1086#endif
1087 }
1088#endif
1089
1090ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
1091ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
1092ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
1093ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
1094
1095ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
1096ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
1097{
1098 return ( (x * 0x0802U & 0x22110U)
1099 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
1100}
1101
1102ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
1103ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
1104{
1105 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
1106 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
1107 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
1108 x = ( x >> 8 ) | ( x << 8);
1109
1110 return x;
1111}
1112
1113ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
1114ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
1115{
1116 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
1117 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
1118 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
1119 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
1120 x = ( x >> 16 ) | ( x << 16);
1121
1122 return x;
1123}
1124
1125/* popcount64 is only available on 64 bit cpus as gcc builtin */
1126/* so for this version we are lazy */
1127ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
1128ecb_function_ ecb_const int
1129ecb_popcount64 (uint64_t x)
1130{
1131 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
1132}
1133
1134ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
1135ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
1136ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
1137ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
1138ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
1139ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
1140ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
1141ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
1142
1143ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
1144ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
1145ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
1146ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
1147ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
1148ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
1149ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
1150ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
1151
1152#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1153 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1154 #define ecb_bswap16(x) __builtin_bswap16 (x)
1155 #else
1156 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1157 #endif
1158 #define ecb_bswap32(x) __builtin_bswap32 (x)
1159 #define ecb_bswap64(x) __builtin_bswap64 (x)
1160#elif _MSC_VER
1161 #include <stdlib.h>
1162 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1163 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1164 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
1165#else
1166 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
1167 ecb_function_ ecb_const uint16_t
1168 ecb_bswap16 (uint16_t x)
1169 {
1170 return ecb_rotl16 (x, 8);
1171 }
1172
1173 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
1174 ecb_function_ ecb_const uint32_t
1175 ecb_bswap32 (uint32_t x)
1176 {
1177 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
1178 }
1179
1180 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
1181 ecb_function_ ecb_const uint64_t
1182 ecb_bswap64 (uint64_t x)
1183 {
1184 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
1185 }
1186#endif
1187
1188#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
1189 #define ecb_unreachable() __builtin_unreachable ()
1190#else
1191 /* this seems to work fine, but gcc always emits a warning for it :/ */
1192 ecb_inline ecb_noreturn void ecb_unreachable (void);
1193 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
1194#endif
1195
1196/* try to tell the compiler that some condition is definitely true */
1197#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
1198
1199ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
1200ecb_inline ecb_const uint32_t
1201ecb_byteorder_helper (void)
1202{
1203 /* the union code still generates code under pressure in gcc, */
1204 /* but less than using pointers, and always seems to */
1205 /* successfully return a constant. */
1206 /* the reason why we have this horrible preprocessor mess */
1207 /* is to avoid it in all cases, at least on common architectures */
1208 /* or when using a recent enough gcc version (>= 4.6) */
1209#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1210 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1211 #define ECB_LITTLE_ENDIAN 1
1212 return 0x44332211;
1213#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1214 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1215 #define ECB_BIG_ENDIAN 1
1216 return 0x11223344;
1217#else
1218 union
1219 {
1220 uint8_t c[4];
1221 uint32_t u;
1222 } u = { 0x11, 0x22, 0x33, 0x44 };
1223 return u.u;
1224#endif
1225}
1226
1227ecb_inline ecb_const ecb_bool ecb_big_endian (void);
1228ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
1229ecb_inline ecb_const ecb_bool ecb_little_endian (void);
1230ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
1231
1232#if ECB_GCC_VERSION(3,0) || ECB_C99
1233 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1234#else
1235 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1236#endif
1237
1238#if ECB_CPP
1239 template<typename T>
1240 static inline T ecb_div_rd (T val, T div)
1241 {
1242 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1243 }
1244 template<typename T>
1245 static inline T ecb_div_ru (T val, T div)
1246 {
1247 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1248 }
1249#else
1250 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1251 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1252#endif
1253
1254#if ecb_cplusplus_does_not_suck
1255 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1256 template<typename T, int N>
1257 static inline int ecb_array_length (const T (&arr)[N])
1258 {
1259 return N;
1260 }
1261#else
1262 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1263#endif
1264
1265ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1266ecb_function_ ecb_const uint32_t
1267ecb_binary16_to_binary32 (uint32_t x)
1268{
1269 unsigned int s = (x & 0x8000) << (31 - 15);
1270 int e = (x >> 10) & 0x001f;
1271 unsigned int m = x & 0x03ff;
1272
1273 if (ecb_expect_false (e == 31))
1274 /* infinity or NaN */
1275 e = 255 - (127 - 15);
1276 else if (ecb_expect_false (!e))
1277 {
1278 if (ecb_expect_true (!m))
1279 /* zero, handled by code below by forcing e to 0 */
1280 e = 0 - (127 - 15);
1281 else
1282 {
1283 /* subnormal, renormalise */
1284 unsigned int s = 10 - ecb_ld32 (m);
1285
1286 m = (m << s) & 0x3ff; /* mask implicit bit */
1287 e -= s - 1;
1288 }
1289 }
1290
1291 /* e and m now are normalised, or zero, (or inf or nan) */
1292 e += 127 - 15;
1293
1294 return s | (e << 23) | (m << (23 - 10));
1295}
1296
1297ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1298ecb_function_ ecb_const uint16_t
1299ecb_binary32_to_binary16 (uint32_t x)
1300{
1301 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1302 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1303 unsigned int m = x & 0x007fffff;
1304
1305 x &= 0x7fffffff;
1306
1307 /* if it's within range of binary16 normals, use fast path */
1308 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1309 {
1310 /* mantissa round-to-even */
1311 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1312
1313 /* handle overflow */
1314 if (ecb_expect_false (m >= 0x00800000))
1315 {
1316 m >>= 1;
1317 e += 1;
1318 }
1319
1320 return s | (e << 10) | (m >> (23 - 10));
1321 }
1322
1323 /* handle large numbers and infinity */
1324 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1325 return s | 0x7c00;
1326
1327 /* handle zero, subnormals and small numbers */
1328 if (ecb_expect_true (x < 0x38800000))
1329 {
1330 /* zero */
1331 if (ecb_expect_true (!x))
1332 return s;
1333
1334 /* handle subnormals */
1335
1336 /* too small, will be zero */
1337 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1338 return s;
1339
1340 m |= 0x00800000; /* make implicit bit explicit */
1341
1342 /* very tricky - we need to round to the nearest e (+10) bit value */
1343 {
1344 unsigned int bits = 14 - e;
1345 unsigned int half = (1 << (bits - 1)) - 1;
1346 unsigned int even = (m >> bits) & 1;
1347
1348 /* if this overflows, we will end up with a normalised number */
1349 m = (m + half + even) >> bits;
1350 }
1351
1352 return s | m;
1353 }
1354
1355 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1356 m >>= 13;
1357
1358 return s | 0x7c00 | m | !m;
1359}
1360
1361/*******************************************************************************/
1362/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1363
1364/* basically, everything uses "ieee pure-endian" floating point numbers */
1365/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1366#if 0 \
1367 || __i386 || __i386__ \
1368 || ECB_GCC_AMD64 \
1369 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1370 || defined __s390__ || defined __s390x__ \
1371 || defined __mips__ \
1372 || defined __alpha__ \
1373 || defined __hppa__ \
1374 || defined __ia64__ \
1375 || defined __m68k__ \
1376 || defined __m88k__ \
1377 || defined __sh__ \
1378 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1379 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1380 || defined __aarch64__
1381 #define ECB_STDFP 1
1382 #include <string.h> /* for memcpy */
1383#else
1384 #define ECB_STDFP 0
1385#endif
1386
1387#ifndef ECB_NO_LIBM
1388
1389 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1390
1391 /* only the oldest of old doesn't have this one. solaris. */
1392 #ifdef INFINITY
1393 #define ECB_INFINITY INFINITY
1394 #else
1395 #define ECB_INFINITY HUGE_VAL
1396 #endif
1397
1398 #ifdef NAN
1399 #define ECB_NAN NAN
1400 #else
1401 #define ECB_NAN ECB_INFINITY
1402 #endif
1403
1404 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1405 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1406 #define ecb_frexpf(x,e) frexpf ((x), (e))
1407 #else
1408 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1409 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1410 #endif
1411
1412 /* convert a float to ieee single/binary32 */
1413 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1414 ecb_function_ ecb_const uint32_t
1415 ecb_float_to_binary32 (float x)
1416 {
1417 uint32_t r;
1418
1419 #if ECB_STDFP
1420 memcpy (&r, &x, 4);
1421 #else
1422 /* slow emulation, works for anything but -0 */
1423 uint32_t m;
1424 int e;
1425
1426 if (x == 0e0f ) return 0x00000000U;
1427 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1428 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1429 if (x != x ) return 0x7fbfffffU;
1430
1431 m = ecb_frexpf (x, &e) * 0x1000000U;
1432
1433 r = m & 0x80000000U;
1434
1435 if (r)
1436 m = -m;
1437
1438 if (e <= -126)
1439 {
1440 m &= 0xffffffU;
1441 m >>= (-125 - e);
1442 e = -126;
1443 }
1444
1445 r |= (e + 126) << 23;
1446 r |= m & 0x7fffffU;
1447 #endif
1448
1449 return r;
1450 }
1451
1452 /* converts an ieee single/binary32 to a float */
1453 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1454 ecb_function_ ecb_const float
1455 ecb_binary32_to_float (uint32_t x)
1456 {
1457 float r;
1458
1459 #if ECB_STDFP
1460 memcpy (&r, &x, 4);
1461 #else
1462 /* emulation, only works for normals and subnormals and +0 */
1463 int neg = x >> 31;
1464 int e = (x >> 23) & 0xffU;
1465
1466 x &= 0x7fffffU;
1467
1468 if (e)
1469 x |= 0x800000U;
1470 else
1471 e = 1;
1472
1473 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1474 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1475
1476 r = neg ? -r : r;
1477 #endif
1478
1479 return r;
1480 }
1481
1482 /* convert a double to ieee double/binary64 */
1483 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1484 ecb_function_ ecb_const uint64_t
1485 ecb_double_to_binary64 (double x)
1486 {
1487 uint64_t r;
1488
1489 #if ECB_STDFP
1490 memcpy (&r, &x, 8);
1491 #else
1492 /* slow emulation, works for anything but -0 */
1493 uint64_t m;
1494 int e;
1495
1496 if (x == 0e0 ) return 0x0000000000000000U;
1497 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1498 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1499 if (x != x ) return 0X7ff7ffffffffffffU;
1500
1501 m = frexp (x, &e) * 0x20000000000000U;
1502
1503 r = m & 0x8000000000000000;;
1504
1505 if (r)
1506 m = -m;
1507
1508 if (e <= -1022)
1509 {
1510 m &= 0x1fffffffffffffU;
1511 m >>= (-1021 - e);
1512 e = -1022;
1513 }
1514
1515 r |= ((uint64_t)(e + 1022)) << 52;
1516 r |= m & 0xfffffffffffffU;
1517 #endif
1518
1519 return r;
1520 }
1521
1522 /* converts an ieee double/binary64 to a double */
1523 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1524 ecb_function_ ecb_const double
1525 ecb_binary64_to_double (uint64_t x)
1526 {
1527 double r;
1528
1529 #if ECB_STDFP
1530 memcpy (&r, &x, 8);
1531 #else
1532 /* emulation, only works for normals and subnormals and +0 */
1533 int neg = x >> 63;
1534 int e = (x >> 52) & 0x7ffU;
1535
1536 x &= 0xfffffffffffffU;
1537
1538 if (e)
1539 x |= 0x10000000000000U;
1540 else
1541 e = 1;
1542
1543 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1544 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1545
1546 r = neg ? -r : r;
1547 #endif
1548
1549 return r;
1550 }
1551
1552 /* convert a float to ieee half/binary16 */
1553 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1554 ecb_function_ ecb_const uint16_t
1555 ecb_float_to_binary16 (float x)
1556 {
1557 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1558 }
1559
1560 /* convert an ieee half/binary16 to float */
1561 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1562 ecb_function_ ecb_const float
1563 ecb_binary16_to_float (uint16_t x)
1564 {
1565 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1566 }
1567
1568#endif
1569
1570#endif
1571
1572/* ECB.H END */
1573
1574#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1575/* if your architecture doesn't need memory fences, e.g. because it is
1576 * single-cpu/core, or if you use libev in a project that doesn't use libev
1577 * from multiple threads, then you can define ECB_NO_THREADS when compiling
1578 * libev, in which cases the memory fences become nops.
1579 * alternatively, you can remove this #error and link against libpthread,
1580 * which will then provide the memory fences.
1581 */
1582# error "memory fences not defined for your architecture, please report"
1583#endif
1584
1585#ifndef ECB_MEMORY_FENCE
1586# define ECB_MEMORY_FENCE do { } while (0)
1587# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1588# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1589#endif
1590
480#define inline_size static inline 1591#define inline_size ecb_inline
481 1592
482#if EV_FEATURE_CODE 1593#if EV_FEATURE_CODE
483# define inline_speed static inline 1594# define inline_speed ecb_inline
484#else 1595#else
485# define inline_speed static noinline 1596# define inline_speed ecb_noinline static
486#endif 1597#endif
1598
1599/*****************************************************************************/
1600/* raw syscall wrappers */
1601
1602#if EV_NEED_SYSCALL
1603
1604#include <sys/syscall.h>
1605
1606/*
1607 * define some syscall wrappers for common architectures
1608 * this is mostly for nice looks during debugging, not performance.
1609 * our syscalls return < 0, not == -1, on error. which is good
1610 * enough for linux aio.
1611 * TODO: arm is also common nowadays, maybe even mips and x86
1612 * TODO: after implementing this, it suddenly looks like overkill, but its hard to remove...
1613 */
1614#if __GNUC__ && __linux && ECB_AMD64 && !defined __OPTIMIZE_SIZE__
1615 /* the costly errno access probably kills this for size optimisation */
1616
1617 #define ev_syscall(nr,narg,arg1,arg2,arg3,arg4,arg5,arg6) \
1618 ({ \
1619 long res; \
1620 register unsigned long r6 __asm__ ("r9" ); \
1621 register unsigned long r5 __asm__ ("r8" ); \
1622 register unsigned long r4 __asm__ ("r10"); \
1623 register unsigned long r3 __asm__ ("rdx"); \
1624 register unsigned long r2 __asm__ ("rsi"); \
1625 register unsigned long r1 __asm__ ("rdi"); \
1626 if (narg >= 6) r6 = (unsigned long)(arg6); \
1627 if (narg >= 5) r5 = (unsigned long)(arg5); \
1628 if (narg >= 4) r4 = (unsigned long)(arg4); \
1629 if (narg >= 3) r3 = (unsigned long)(arg3); \
1630 if (narg >= 2) r2 = (unsigned long)(arg2); \
1631 if (narg >= 1) r1 = (unsigned long)(arg1); \
1632 __asm__ __volatile__ ( \
1633 "syscall\n\t" \
1634 : "=a" (res) \
1635 : "0" (nr), "r" (r1), "r" (r2), "r" (r3), "r" (r4), "r" (r5) \
1636 : "cc", "r11", "cx", "memory"); \
1637 errno = -res; \
1638 res; \
1639 })
1640
1641#endif
1642
1643#ifdef ev_syscall
1644 #define ev_syscall0(nr) ev_syscall (nr, 0, 0, 0, 0, 0, 0, 0)
1645 #define ev_syscall1(nr,arg1) ev_syscall (nr, 1, arg1, 0, 0, 0, 0, 0)
1646 #define ev_syscall2(nr,arg1,arg2) ev_syscall (nr, 2, arg1, arg2, 0, 0, 0, 0)
1647 #define ev_syscall3(nr,arg1,arg2,arg3) ev_syscall (nr, 3, arg1, arg2, arg3, 0, 0, 0)
1648 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) ev_syscall (nr, 3, arg1, arg2, arg3, arg4, 0, 0)
1649 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) ev_syscall (nr, 5, arg1, arg2, arg3, arg4, arg5, 0)
1650 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) ev_syscall (nr, 6, arg1, arg2, arg3, arg4, arg5,arg6)
1651#else
1652 #define ev_syscall0(nr) syscall (nr)
1653 #define ev_syscall1(nr,arg1) syscall (nr, arg1)
1654 #define ev_syscall2(nr,arg1,arg2) syscall (nr, arg1, arg2)
1655 #define ev_syscall3(nr,arg1,arg2,arg3) syscall (nr, arg1, arg2, arg3)
1656 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) syscall (nr, arg1, arg2, arg3, arg4)
1657 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) syscall (nr, arg1, arg2, arg3, arg4, arg5)
1658 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) syscall (nr, arg1, arg2, arg3, arg4, arg5,arg6)
1659#endif
1660
1661#endif
1662
1663/*****************************************************************************/
487 1664
488#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1665#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
489 1666
490#if EV_MINPRI == EV_MAXPRI 1667#if EV_MINPRI == EV_MAXPRI
491# define ABSPRI(w) (((W)w), 0) 1668# define ABSPRI(w) (((W)w), 0)
492#else 1669#else
493# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1670# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
494#endif 1671#endif
495 1672
496#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1673#define EMPTY /* required for microsofts broken pseudo-c compiler */
497#define EMPTY2(a,b) /* used to suppress some warnings */
498 1674
499typedef ev_watcher *W; 1675typedef ev_watcher *W;
500typedef ev_watcher_list *WL; 1676typedef ev_watcher_list *WL;
501typedef ev_watcher_time *WT; 1677typedef ev_watcher_time *WT;
502 1678
503#define ev_active(w) ((W)(w))->active 1679#define ev_active(w) ((W)(w))->active
504#define ev_at(w) ((WT)(w))->at 1680#define ev_at(w) ((WT)(w))->at
505 1681
506#if EV_USE_REALTIME 1682#if EV_USE_REALTIME
507/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 1683/* sig_atomic_t is used to avoid per-thread variables or locking but still */
508/* giving it a reasonably high chance of working on typical architetcures */ 1684/* giving it a reasonably high chance of working on typical architectures */
509static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 1685static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
510#endif 1686#endif
511 1687
512#if EV_USE_MONOTONIC 1688#if EV_USE_MONOTONIC
513static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 1689static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
… …
527# include "ev_win32.c" 1703# include "ev_win32.c"
528#endif 1704#endif
529 1705
530/*****************************************************************************/ 1706/*****************************************************************************/
531 1707
1708#if EV_USE_LINUXAIO
1709# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
1710#endif
1711
1712/* define a suitable floor function (only used by periodics atm) */
1713
1714#if EV_USE_FLOOR
1715# include <math.h>
1716# define ev_floor(v) floor (v)
1717#else
1718
1719#include <float.h>
1720
1721/* a floor() replacement function, should be independent of ev_tstamp type */
1722ecb_noinline
1723static ev_tstamp
1724ev_floor (ev_tstamp v)
1725{
1726 /* the choice of shift factor is not terribly important */
1727#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1728 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1729#else
1730 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1731#endif
1732
1733 /* special treatment for negative arguments */
1734 if (ecb_expect_false (v < 0.))
1735 {
1736 ev_tstamp f = -ev_floor (-v);
1737
1738 return f - (f == v ? 0 : 1);
1739 }
1740
1741 /* argument too large for an unsigned long? then reduce it */
1742 if (ecb_expect_false (v >= shift))
1743 {
1744 ev_tstamp f;
1745
1746 if (v == v - 1.)
1747 return v; /* very large numbers are assumed to be integer */
1748
1749 f = shift * ev_floor (v * (1. / shift));
1750 return f + ev_floor (v - f);
1751 }
1752
1753 /* fits into an unsigned long */
1754 return (unsigned long)v;
1755}
1756
1757#endif
1758
1759/*****************************************************************************/
1760
1761#ifdef __linux
1762# include <sys/utsname.h>
1763#endif
1764
1765ecb_noinline ecb_cold
1766static unsigned int
1767ev_linux_version (void)
1768{
1769#ifdef __linux
1770 unsigned int v = 0;
1771 struct utsname buf;
1772 int i;
1773 char *p = buf.release;
1774
1775 if (uname (&buf))
1776 return 0;
1777
1778 for (i = 3+1; --i; )
1779 {
1780 unsigned int c = 0;
1781
1782 for (;;)
1783 {
1784 if (*p >= '0' && *p <= '9')
1785 c = c * 10 + *p++ - '0';
1786 else
1787 {
1788 p += *p == '.';
1789 break;
1790 }
1791 }
1792
1793 v = (v << 8) | c;
1794 }
1795
1796 return v;
1797#else
1798 return 0;
1799#endif
1800}
1801
1802/*****************************************************************************/
1803
532#if EV_AVOID_STDIO 1804#if EV_AVOID_STDIO
533static void noinline 1805ecb_noinline ecb_cold
1806static void
534ev_printerr (const char *msg) 1807ev_printerr (const char *msg)
535{ 1808{
536 write (STDERR_FILENO, msg, strlen (msg)); 1809 write (STDERR_FILENO, msg, strlen (msg));
537} 1810}
538#endif 1811#endif
539 1812
540static void (*syserr_cb)(const char *msg); 1813static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
541 1814
1815ecb_cold
542void 1816void
543ev_set_syserr_cb (void (*cb)(const char *msg)) 1817ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
544{ 1818{
545 syserr_cb = cb; 1819 syserr_cb = cb;
546} 1820}
547 1821
548static void noinline 1822ecb_noinline ecb_cold
1823static void
549ev_syserr (const char *msg) 1824ev_syserr (const char *msg)
550{ 1825{
551 if (!msg) 1826 if (!msg)
552 msg = "(libev) system error"; 1827 msg = "(libev) system error";
553 1828
554 if (syserr_cb) 1829 if (syserr_cb)
555 syserr_cb (msg); 1830 syserr_cb (msg);
556 else 1831 else
557 { 1832 {
558#if EV_AVOID_STDIO 1833#if EV_AVOID_STDIO
559 const char *err = strerror (errno);
560
561 ev_printerr (msg); 1834 ev_printerr (msg);
562 ev_printerr (": "); 1835 ev_printerr (": ");
563 ev_printerr (err); 1836 ev_printerr (strerror (errno));
564 ev_printerr ("\n"); 1837 ev_printerr ("\n");
565#else 1838#else
566 perror (msg); 1839 perror (msg);
567#endif 1840#endif
568 abort (); 1841 abort ();
569 } 1842 }
570} 1843}
571 1844
572static void * 1845static void *
573ev_realloc_emul (void *ptr, long size) 1846ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
574{ 1847{
575#if __GLIBC__
576 return realloc (ptr, size);
577#else
578 /* some systems, notably openbsd and darwin, fail to properly 1848 /* some systems, notably openbsd and darwin, fail to properly
579 * implement realloc (x, 0) (as required by both ansi c-89 and 1849 * implement realloc (x, 0) (as required by both ansi c-89 and
580 * the single unix specification, so work around them here. 1850 * the single unix specification, so work around them here.
1851 * recently, also (at least) fedora and debian started breaking it,
1852 * despite documenting it otherwise.
581 */ 1853 */
582 1854
583 if (size) 1855 if (size)
584 return realloc (ptr, size); 1856 return realloc (ptr, size);
585 1857
586 free (ptr); 1858 free (ptr);
587 return 0; 1859 return 0;
588#endif
589} 1860}
590 1861
591static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1862static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
592 1863
1864ecb_cold
593void 1865void
594ev_set_allocator (void *(*cb)(void *ptr, long size)) 1866ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
595{ 1867{
596 alloc = cb; 1868 alloc = cb;
597} 1869}
598 1870
599inline_speed void * 1871inline_speed void *
… …
602 ptr = alloc (ptr, size); 1874 ptr = alloc (ptr, size);
603 1875
604 if (!ptr && size) 1876 if (!ptr && size)
605 { 1877 {
606#if EV_AVOID_STDIO 1878#if EV_AVOID_STDIO
607 ev_printerr ("libev: memory allocation failed, aborting.\n"); 1879 ev_printerr ("(libev) memory allocation failed, aborting.\n");
608#else 1880#else
609 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1881 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
610#endif 1882#endif
611 abort (); 1883 abort ();
612 } 1884 }
613 1885
614 return ptr; 1886 return ptr;
… …
626typedef struct 1898typedef struct
627{ 1899{
628 WL head; 1900 WL head;
629 unsigned char events; /* the events watched for */ 1901 unsigned char events; /* the events watched for */
630 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */ 1902 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
631 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1903 unsigned char emask; /* some backends store the actual kernel mask in here */
632 unsigned char unused; 1904 unsigned char eflags; /* flags field for use by backends */
633#if EV_USE_EPOLL 1905#if EV_USE_EPOLL
634 unsigned int egen; /* generation counter to counter epoll bugs */ 1906 unsigned int egen; /* generation counter to counter epoll bugs */
635#endif 1907#endif
636#if EV_SELECT_IS_WINSOCKET 1908#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
637 SOCKET handle; 1909 SOCKET handle;
1910#endif
1911#if EV_USE_IOCP
1912 OVERLAPPED or, ow;
638#endif 1913#endif
639} ANFD; 1914} ANFD;
640 1915
641/* stores the pending event set for a given watcher */ 1916/* stores the pending event set for a given watcher */
642typedef struct 1917typedef struct
… …
684 #undef VAR 1959 #undef VAR
685 }; 1960 };
686 #include "ev_wrap.h" 1961 #include "ev_wrap.h"
687 1962
688 static struct ev_loop default_loop_struct; 1963 static struct ev_loop default_loop_struct;
689 struct ev_loop *ev_default_loop_ptr; 1964 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
690 1965
691#else 1966#else
692 1967
693 ev_tstamp ev_rt_now; 1968 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
694 #define VAR(name,decl) static decl; 1969 #define VAR(name,decl) static decl;
695 #include "ev_vars.h" 1970 #include "ev_vars.h"
696 #undef VAR 1971 #undef VAR
697 1972
698 static int ev_default_loop_ptr; 1973 static int ev_default_loop_ptr;
699 1974
700#endif 1975#endif
701 1976
702#if EV_FEATURE_API 1977#if EV_FEATURE_API
703# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 1978# define EV_RELEASE_CB if (ecb_expect_false (release_cb)) release_cb (EV_A)
704# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 1979# define EV_ACQUIRE_CB if (ecb_expect_false (acquire_cb)) acquire_cb (EV_A)
705# define EV_INVOKE_PENDING invoke_cb (EV_A) 1980# define EV_INVOKE_PENDING invoke_cb (EV_A)
706#else 1981#else
707# define EV_RELEASE_CB (void)0 1982# define EV_RELEASE_CB (void)0
708# define EV_ACQUIRE_CB (void)0 1983# define EV_ACQUIRE_CB (void)0
709# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1984# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
710#endif 1985#endif
711 1986
712#define EVUNLOOP_RECURSE 0x80 1987#define EVBREAK_RECURSE 0x80
713 1988
714/*****************************************************************************/ 1989/*****************************************************************************/
715 1990
716#ifndef EV_HAVE_EV_TIME 1991#ifndef EV_HAVE_EV_TIME
717ev_tstamp 1992ev_tstamp
718ev_time (void) 1993ev_time (void) EV_NOEXCEPT
719{ 1994{
720#if EV_USE_REALTIME 1995#if EV_USE_REALTIME
721 if (expect_true (have_realtime)) 1996 if (ecb_expect_true (have_realtime))
722 { 1997 {
723 struct timespec ts; 1998 struct timespec ts;
724 clock_gettime (CLOCK_REALTIME, &ts); 1999 clock_gettime (CLOCK_REALTIME, &ts);
725 return ts.tv_sec + ts.tv_nsec * 1e-9; 2000 return EV_TS_GET (ts);
726 } 2001 }
727#endif 2002#endif
728 2003
729 struct timeval tv; 2004 struct timeval tv;
730 gettimeofday (&tv, 0); 2005 gettimeofday (&tv, 0);
731 return tv.tv_sec + tv.tv_usec * 1e-6; 2006 return EV_TV_GET (tv);
732} 2007}
733#endif 2008#endif
734 2009
735inline_size ev_tstamp 2010inline_size ev_tstamp
736get_clock (void) 2011get_clock (void)
737{ 2012{
738#if EV_USE_MONOTONIC 2013#if EV_USE_MONOTONIC
739 if (expect_true (have_monotonic)) 2014 if (ecb_expect_true (have_monotonic))
740 { 2015 {
741 struct timespec ts; 2016 struct timespec ts;
742 clock_gettime (CLOCK_MONOTONIC, &ts); 2017 clock_gettime (CLOCK_MONOTONIC, &ts);
743 return ts.tv_sec + ts.tv_nsec * 1e-9; 2018 return EV_TS_GET (ts);
744 } 2019 }
745#endif 2020#endif
746 2021
747 return ev_time (); 2022 return ev_time ();
748} 2023}
749 2024
750#if EV_MULTIPLICITY 2025#if EV_MULTIPLICITY
751ev_tstamp 2026ev_tstamp
752ev_now (EV_P) 2027ev_now (EV_P) EV_NOEXCEPT
753{ 2028{
754 return ev_rt_now; 2029 return ev_rt_now;
755} 2030}
756#endif 2031#endif
757 2032
758void 2033void
759ev_sleep (ev_tstamp delay) 2034ev_sleep (ev_tstamp delay) EV_NOEXCEPT
760{ 2035{
761 if (delay > 0.) 2036 if (delay > 0.)
762 { 2037 {
763#if EV_USE_NANOSLEEP 2038#if EV_USE_NANOSLEEP
764 struct timespec ts; 2039 struct timespec ts;
765 2040
766 ts.tv_sec = (time_t)delay; 2041 EV_TS_SET (ts, delay);
767 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
768
769 nanosleep (&ts, 0); 2042 nanosleep (&ts, 0);
770#elif defined(_WIN32) 2043#elif defined _WIN32
2044 /* maybe this should round up, as ms is very low resolution */
2045 /* compared to select (µs) or nanosleep (ns) */
771 Sleep ((unsigned long)(delay * 1e3)); 2046 Sleep ((unsigned long)(delay * 1e3));
772#else 2047#else
773 struct timeval tv; 2048 struct timeval tv;
774 2049
775 tv.tv_sec = (time_t)delay;
776 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
777
778 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 2050 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
779 /* something not guaranteed by newer posix versions, but guaranteed */ 2051 /* something not guaranteed by newer posix versions, but guaranteed */
780 /* by older ones */ 2052 /* by older ones */
2053 EV_TV_SET (tv, delay);
781 select (0, 0, 0, 0, &tv); 2054 select (0, 0, 0, 0, &tv);
782#endif 2055#endif
783 } 2056 }
784} 2057}
785 2058
786/*****************************************************************************/ 2059/*****************************************************************************/
787 2060
788#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 2061#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
789 2062
790/* find a suitable new size for the given array, */ 2063/* find a suitable new size for the given array, */
791/* hopefully by rounding to a ncie-to-malloc size */ 2064/* hopefully by rounding to a nice-to-malloc size */
792inline_size int 2065inline_size int
793array_nextsize (int elem, int cur, int cnt) 2066array_nextsize (int elem, int cur, int cnt)
794{ 2067{
795 int ncur = cur + 1; 2068 int ncur = cur + 1;
796 2069
797 do 2070 do
798 ncur <<= 1; 2071 ncur <<= 1;
799 while (cnt > ncur); 2072 while (cnt > ncur);
800 2073
801 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 2074 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
802 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 2075 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
803 { 2076 {
804 ncur *= elem; 2077 ncur *= elem;
805 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 2078 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
806 ncur = ncur - sizeof (void *) * 4; 2079 ncur = ncur - sizeof (void *) * 4;
… …
808 } 2081 }
809 2082
810 return ncur; 2083 return ncur;
811} 2084}
812 2085
813static noinline void * 2086ecb_noinline ecb_cold
2087static void *
814array_realloc (int elem, void *base, int *cur, int cnt) 2088array_realloc (int elem, void *base, int *cur, int cnt)
815{ 2089{
816 *cur = array_nextsize (elem, *cur, cnt); 2090 *cur = array_nextsize (elem, *cur, cnt);
817 return ev_realloc (base, elem * *cur); 2091 return ev_realloc (base, elem * *cur);
818} 2092}
819 2093
2094#define array_needsize_noinit(base,offset,count)
2095
820#define array_init_zero(base,count) \ 2096#define array_needsize_zerofill(base,offset,count) \
821 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 2097 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
822 2098
823#define array_needsize(type,base,cur,cnt,init) \ 2099#define array_needsize(type,base,cur,cnt,init) \
824 if (expect_false ((cnt) > (cur))) \ 2100 if (ecb_expect_false ((cnt) > (cur))) \
825 { \ 2101 { \
826 int ocur_ = (cur); \ 2102 ecb_unused int ocur_ = (cur); \
827 (base) = (type *)array_realloc \ 2103 (base) = (type *)array_realloc \
828 (sizeof (type), (base), &(cur), (cnt)); \ 2104 (sizeof (type), (base), &(cur), (cnt)); \
829 init ((base) + (ocur_), (cur) - ocur_); \ 2105 init ((base), ocur_, ((cur) - ocur_)); \
830 } 2106 }
831 2107
832#if 0 2108#if 0
833#define array_slim(type,stem) \ 2109#define array_slim(type,stem) \
834 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2110 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
… …
843 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 2119 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
844 2120
845/*****************************************************************************/ 2121/*****************************************************************************/
846 2122
847/* dummy callback for pending events */ 2123/* dummy callback for pending events */
848static void noinline 2124ecb_noinline
2125static void
849pendingcb (EV_P_ ev_prepare *w, int revents) 2126pendingcb (EV_P_ ev_prepare *w, int revents)
850{ 2127{
851} 2128}
852 2129
853void noinline 2130ecb_noinline
2131void
854ev_feed_event (EV_P_ void *w, int revents) 2132ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
855{ 2133{
856 W w_ = (W)w; 2134 W w_ = (W)w;
857 int pri = ABSPRI (w_); 2135 int pri = ABSPRI (w_);
858 2136
859 if (expect_false (w_->pending)) 2137 if (ecb_expect_false (w_->pending))
860 pendings [pri][w_->pending - 1].events |= revents; 2138 pendings [pri][w_->pending - 1].events |= revents;
861 else 2139 else
862 { 2140 {
863 w_->pending = ++pendingcnt [pri]; 2141 w_->pending = ++pendingcnt [pri];
864 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2142 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
865 pendings [pri][w_->pending - 1].w = w_; 2143 pendings [pri][w_->pending - 1].w = w_;
866 pendings [pri][w_->pending - 1].events = revents; 2144 pendings [pri][w_->pending - 1].events = revents;
867 } 2145 }
2146
2147 pendingpri = NUMPRI - 1;
868} 2148}
869 2149
870inline_speed void 2150inline_speed void
871feed_reverse (EV_P_ W w) 2151feed_reverse (EV_P_ W w)
872{ 2152{
873 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2153 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
874 rfeeds [rfeedcnt++] = w; 2154 rfeeds [rfeedcnt++] = w;
875} 2155}
876 2156
877inline_size void 2157inline_size void
878feed_reverse_done (EV_P_ int revents) 2158feed_reverse_done (EV_P_ int revents)
… …
913inline_speed void 2193inline_speed void
914fd_event (EV_P_ int fd, int revents) 2194fd_event (EV_P_ int fd, int revents)
915{ 2195{
916 ANFD *anfd = anfds + fd; 2196 ANFD *anfd = anfds + fd;
917 2197
918 if (expect_true (!anfd->reify)) 2198 if (ecb_expect_true (!anfd->reify))
919 fd_event_nocheck (EV_A_ fd, revents); 2199 fd_event_nocheck (EV_A_ fd, revents);
920} 2200}
921 2201
922void 2202void
923ev_feed_fd_event (EV_P_ int fd, int revents) 2203ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
924{ 2204{
925 if (fd >= 0 && fd < anfdmax) 2205 if (fd >= 0 && fd < anfdmax)
926 fd_event_nocheck (EV_A_ fd, revents); 2206 fd_event_nocheck (EV_A_ fd, revents);
927} 2207}
928 2208
… …
931inline_size void 2211inline_size void
932fd_reify (EV_P) 2212fd_reify (EV_P)
933{ 2213{
934 int i; 2214 int i;
935 2215
2216#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
2217 for (i = 0; i < fdchangecnt; ++i)
2218 {
2219 int fd = fdchanges [i];
2220 ANFD *anfd = anfds + fd;
2221
2222 if (anfd->reify & EV__IOFDSET && anfd->head)
2223 {
2224 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
2225
2226 if (handle != anfd->handle)
2227 {
2228 unsigned long arg;
2229
2230 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
2231
2232 /* handle changed, but fd didn't - we need to do it in two steps */
2233 backend_modify (EV_A_ fd, anfd->events, 0);
2234 anfd->events = 0;
2235 anfd->handle = handle;
2236 }
2237 }
2238 }
2239#endif
2240
936 for (i = 0; i < fdchangecnt; ++i) 2241 for (i = 0; i < fdchangecnt; ++i)
937 { 2242 {
938 int fd = fdchanges [i]; 2243 int fd = fdchanges [i];
939 ANFD *anfd = anfds + fd; 2244 ANFD *anfd = anfds + fd;
940 ev_io *w; 2245 ev_io *w;
941 2246
942 unsigned char events = 0; 2247 unsigned char o_events = anfd->events;
2248 unsigned char o_reify = anfd->reify;
943 2249
944 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2250 anfd->reify = 0;
945 events |= (unsigned char)w->events;
946 2251
947#if EV_SELECT_IS_WINSOCKET 2252 /*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
948 if (events)
949 { 2253 {
950 unsigned long arg; 2254 anfd->events = 0;
951 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 2255
952 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 2256 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
2257 anfd->events |= (unsigned char)w->events;
2258
2259 if (o_events != anfd->events)
2260 o_reify = EV__IOFDSET; /* actually |= */
953 } 2261 }
954#endif
955 2262
956 { 2263 if (o_reify & EV__IOFDSET)
957 unsigned char o_events = anfd->events;
958 unsigned char o_reify = anfd->reify;
959
960 anfd->reify = 0;
961 anfd->events = events;
962
963 if (o_events != events || o_reify & EV__IOFDSET)
964 backend_modify (EV_A_ fd, o_events, events); 2264 backend_modify (EV_A_ fd, o_events, anfd->events);
965 }
966 } 2265 }
967 2266
968 fdchangecnt = 0; 2267 fdchangecnt = 0;
969} 2268}
970 2269
971/* something about the given fd changed */ 2270/* something about the given fd changed */
972inline_size void 2271inline_size
2272void
973fd_change (EV_P_ int fd, int flags) 2273fd_change (EV_P_ int fd, int flags)
974{ 2274{
975 unsigned char reify = anfds [fd].reify; 2275 unsigned char reify = anfds [fd].reify;
976 anfds [fd].reify |= flags; 2276 anfds [fd].reify |= flags;
977 2277
978 if (expect_true (!reify)) 2278 if (ecb_expect_true (!reify))
979 { 2279 {
980 ++fdchangecnt; 2280 ++fdchangecnt;
981 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2281 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
982 fdchanges [fdchangecnt - 1] = fd; 2282 fdchanges [fdchangecnt - 1] = fd;
983 } 2283 }
984} 2284}
985 2285
986/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2286/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
987inline_speed void 2287inline_speed ecb_cold void
988fd_kill (EV_P_ int fd) 2288fd_kill (EV_P_ int fd)
989{ 2289{
990 ev_io *w; 2290 ev_io *w;
991 2291
992 while ((w = (ev_io *)anfds [fd].head)) 2292 while ((w = (ev_io *)anfds [fd].head))
… …
995 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2295 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
996 } 2296 }
997} 2297}
998 2298
999/* check whether the given fd is actually valid, for error recovery */ 2299/* check whether the given fd is actually valid, for error recovery */
1000inline_size int 2300inline_size ecb_cold int
1001fd_valid (int fd) 2301fd_valid (int fd)
1002{ 2302{
1003#ifdef _WIN32 2303#ifdef _WIN32
1004 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2304 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1005#else 2305#else
1006 return fcntl (fd, F_GETFD) != -1; 2306 return fcntl (fd, F_GETFD) != -1;
1007#endif 2307#endif
1008} 2308}
1009 2309
1010/* called on EBADF to verify fds */ 2310/* called on EBADF to verify fds */
1011static void noinline 2311ecb_noinline ecb_cold
2312static void
1012fd_ebadf (EV_P) 2313fd_ebadf (EV_P)
1013{ 2314{
1014 int fd; 2315 int fd;
1015 2316
1016 for (fd = 0; fd < anfdmax; ++fd) 2317 for (fd = 0; fd < anfdmax; ++fd)
… …
1018 if (!fd_valid (fd) && errno == EBADF) 2319 if (!fd_valid (fd) && errno == EBADF)
1019 fd_kill (EV_A_ fd); 2320 fd_kill (EV_A_ fd);
1020} 2321}
1021 2322
1022/* called on ENOMEM in select/poll to kill some fds and retry */ 2323/* called on ENOMEM in select/poll to kill some fds and retry */
1023static void noinline 2324ecb_noinline ecb_cold
2325static void
1024fd_enomem (EV_P) 2326fd_enomem (EV_P)
1025{ 2327{
1026 int fd; 2328 int fd;
1027 2329
1028 for (fd = anfdmax; fd--; ) 2330 for (fd = anfdmax; fd--; )
… …
1032 break; 2334 break;
1033 } 2335 }
1034} 2336}
1035 2337
1036/* usually called after fork if backend needs to re-arm all fds from scratch */ 2338/* usually called after fork if backend needs to re-arm all fds from scratch */
1037static void noinline 2339ecb_noinline
2340static void
1038fd_rearm_all (EV_P) 2341fd_rearm_all (EV_P)
1039{ 2342{
1040 int fd; 2343 int fd;
1041 2344
1042 for (fd = 0; fd < anfdmax; ++fd) 2345 for (fd = 0; fd < anfdmax; ++fd)
… …
1063} 2366}
1064 2367
1065/*****************************************************************************/ 2368/*****************************************************************************/
1066 2369
1067/* 2370/*
1068 * the heap functions want a real array index. array index 0 uis guaranteed to not 2371 * the heap functions want a real array index. array index 0 is guaranteed to not
1069 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 2372 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
1070 * the branching factor of the d-tree. 2373 * the branching factor of the d-tree.
1071 */ 2374 */
1072 2375
1073/* 2376/*
… …
1095 ev_tstamp minat; 2398 ev_tstamp minat;
1096 ANHE *minpos; 2399 ANHE *minpos;
1097 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; 2400 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
1098 2401
1099 /* find minimum child */ 2402 /* find minimum child */
1100 if (expect_true (pos + DHEAP - 1 < E)) 2403 if (ecb_expect_true (pos + DHEAP - 1 < E))
1101 { 2404 {
1102 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2405 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1103 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2406 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1104 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2407 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1105 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2408 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
… …
1223 2526
1224/*****************************************************************************/ 2527/*****************************************************************************/
1225 2528
1226#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2529#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1227 2530
1228static void noinline 2531ecb_noinline ecb_cold
2532static void
1229evpipe_init (EV_P) 2533evpipe_init (EV_P)
1230{ 2534{
1231 if (!ev_is_active (&pipe_w)) 2535 if (!ev_is_active (&pipe_w))
1232 { 2536 {
2537 int fds [2];
2538
1233# if EV_USE_EVENTFD 2539# if EV_USE_EVENTFD
2540 fds [0] = -1;
1234 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2541 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1235 if (evfd < 0 && errno == EINVAL) 2542 if (fds [1] < 0 && errno == EINVAL)
1236 evfd = eventfd (0, 0); 2543 fds [1] = eventfd (0, 0);
1237 2544
1238 if (evfd >= 0) 2545 if (fds [1] < 0)
2546# endif
1239 { 2547 {
2548 while (pipe (fds))
2549 ev_syserr ("(libev) error creating signal/async pipe");
2550
2551 fd_intern (fds [0]);
2552 }
2553
1240 evpipe [0] = -1; 2554 evpipe [0] = fds [0];
1241 fd_intern (evfd); /* doing it twice doesn't hurt */ 2555
1242 ev_io_set (&pipe_w, evfd, EV_READ); 2556 if (evpipe [1] < 0)
2557 evpipe [1] = fds [1]; /* first call, set write fd */
2558 else
2559 {
2560 /* on subsequent calls, do not change evpipe [1] */
2561 /* so that evpipe_write can always rely on its value. */
2562 /* this branch does not do anything sensible on windows, */
2563 /* so must not be executed on windows */
2564
2565 dup2 (fds [1], evpipe [1]);
2566 close (fds [1]);
2567 }
2568
2569 fd_intern (evpipe [1]);
2570
2571 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2572 ev_io_start (EV_A_ &pipe_w);
2573 ev_unref (EV_A); /* watcher should not keep loop alive */
2574 }
2575}
2576
2577inline_speed void
2578evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2579{
2580 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2581
2582 if (ecb_expect_true (*flag))
2583 return;
2584
2585 *flag = 1;
2586 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2587
2588 pipe_write_skipped = 1;
2589
2590 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2591
2592 if (pipe_write_wanted)
2593 {
2594 int old_errno;
2595
2596 pipe_write_skipped = 0;
2597 ECB_MEMORY_FENCE_RELEASE;
2598
2599 old_errno = errno; /* save errno because write will clobber it */
2600
2601#if EV_USE_EVENTFD
2602 if (evpipe [0] < 0)
2603 {
2604 uint64_t counter = 1;
2605 write (evpipe [1], &counter, sizeof (uint64_t));
1243 } 2606 }
1244 else 2607 else
1245# endif 2608#endif
1246 { 2609 {
1247 while (pipe (evpipe)) 2610#ifdef _WIN32
1248 ev_syserr ("(libev) error creating signal/async pipe"); 2611 WSABUF buf;
1249 2612 DWORD sent;
1250 fd_intern (evpipe [0]); 2613 buf.buf = (char *)&buf;
1251 fd_intern (evpipe [1]); 2614 buf.len = 1;
1252 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2615 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2616#else
2617 write (evpipe [1], &(evpipe [1]), 1);
2618#endif
1253 } 2619 }
1254
1255 ev_io_start (EV_A_ &pipe_w);
1256 ev_unref (EV_A); /* watcher should not keep loop alive */
1257 }
1258}
1259
1260inline_size void
1261evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1262{
1263 if (!*flag)
1264 {
1265 int old_errno = errno; /* save errno because write might clobber it */
1266 char dummy;
1267
1268 *flag = 1;
1269
1270#if EV_USE_EVENTFD
1271 if (evfd >= 0)
1272 {
1273 uint64_t counter = 1;
1274 write (evfd, &counter, sizeof (uint64_t));
1275 }
1276 else
1277#endif
1278 write (evpipe [1], &dummy, 1);
1279 2620
1280 errno = old_errno; 2621 errno = old_errno;
1281 } 2622 }
1282} 2623}
1283 2624
… …
1286static void 2627static void
1287pipecb (EV_P_ ev_io *iow, int revents) 2628pipecb (EV_P_ ev_io *iow, int revents)
1288{ 2629{
1289 int i; 2630 int i;
1290 2631
2632 if (revents & EV_READ)
2633 {
1291#if EV_USE_EVENTFD 2634#if EV_USE_EVENTFD
1292 if (evfd >= 0) 2635 if (evpipe [0] < 0)
1293 { 2636 {
1294 uint64_t counter; 2637 uint64_t counter;
1295 read (evfd, &counter, sizeof (uint64_t)); 2638 read (evpipe [1], &counter, sizeof (uint64_t));
1296 } 2639 }
1297 else 2640 else
1298#endif 2641#endif
1299 { 2642 {
1300 char dummy; 2643 char dummy[4];
2644#ifdef _WIN32
2645 WSABUF buf;
2646 DWORD recvd;
2647 DWORD flags = 0;
2648 buf.buf = dummy;
2649 buf.len = sizeof (dummy);
2650 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2651#else
1301 read (evpipe [0], &dummy, 1); 2652 read (evpipe [0], &dummy, sizeof (dummy));
2653#endif
2654 }
1302 } 2655 }
1303 2656
2657 pipe_write_skipped = 0;
2658
2659 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2660
2661#if EV_SIGNAL_ENABLE
1304 if (sig_pending) 2662 if (sig_pending)
1305 { 2663 {
1306 sig_pending = 0; 2664 sig_pending = 0;
1307 2665
2666 ECB_MEMORY_FENCE;
2667
1308 for (i = EV_NSIG - 1; i--; ) 2668 for (i = EV_NSIG - 1; i--; )
1309 if (expect_false (signals [i].pending)) 2669 if (ecb_expect_false (signals [i].pending))
1310 ev_feed_signal_event (EV_A_ i + 1); 2670 ev_feed_signal_event (EV_A_ i + 1);
1311 } 2671 }
2672#endif
1312 2673
1313#if EV_ASYNC_ENABLE 2674#if EV_ASYNC_ENABLE
1314 if (async_pending) 2675 if (async_pending)
1315 { 2676 {
1316 async_pending = 0; 2677 async_pending = 0;
2678
2679 ECB_MEMORY_FENCE;
1317 2680
1318 for (i = asynccnt; i--; ) 2681 for (i = asynccnt; i--; )
1319 if (asyncs [i]->sent) 2682 if (asyncs [i]->sent)
1320 { 2683 {
1321 asyncs [i]->sent = 0; 2684 asyncs [i]->sent = 0;
2685 ECB_MEMORY_FENCE_RELEASE;
1322 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2686 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1323 } 2687 }
1324 } 2688 }
1325#endif 2689#endif
1326} 2690}
1327 2691
1328/*****************************************************************************/ 2692/*****************************************************************************/
1329 2693
2694void
2695ev_feed_signal (int signum) EV_NOEXCEPT
2696{
2697#if EV_MULTIPLICITY
2698 EV_P;
2699 ECB_MEMORY_FENCE_ACQUIRE;
2700 EV_A = signals [signum - 1].loop;
2701
2702 if (!EV_A)
2703 return;
2704#endif
2705
2706 signals [signum - 1].pending = 1;
2707 evpipe_write (EV_A_ &sig_pending);
2708}
2709
1330static void 2710static void
1331ev_sighandler (int signum) 2711ev_sighandler (int signum)
1332{ 2712{
1333#if EV_MULTIPLICITY
1334 EV_P = signals [signum - 1].loop;
1335#endif
1336
1337#ifdef _WIN32 2713#ifdef _WIN32
1338 signal (signum, ev_sighandler); 2714 signal (signum, ev_sighandler);
1339#endif 2715#endif
1340 2716
1341 signals [signum - 1].pending = 1; 2717 ev_feed_signal (signum);
1342 evpipe_write (EV_A_ &sig_pending);
1343} 2718}
1344 2719
1345void noinline 2720ecb_noinline
2721void
1346ev_feed_signal_event (EV_P_ int signum) 2722ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
1347{ 2723{
1348 WL w; 2724 WL w;
1349 2725
1350 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2726 if (ecb_expect_false (signum <= 0 || signum >= EV_NSIG))
1351 return; 2727 return;
1352 2728
1353 --signum; 2729 --signum;
1354 2730
1355#if EV_MULTIPLICITY 2731#if EV_MULTIPLICITY
1356 /* it is permissible to try to feed a signal to the wrong loop */ 2732 /* it is permissible to try to feed a signal to the wrong loop */
1357 /* or, likely more useful, feeding a signal nobody is waiting for */ 2733 /* or, likely more useful, feeding a signal nobody is waiting for */
1358 2734
1359 if (expect_false (signals [signum].loop != EV_A)) 2735 if (ecb_expect_false (signals [signum].loop != EV_A))
1360 return; 2736 return;
1361#endif 2737#endif
1362 2738
1363 signals [signum].pending = 0; 2739 signals [signum].pending = 0;
2740 ECB_MEMORY_FENCE_RELEASE;
1364 2741
1365 for (w = signals [signum].head; w; w = w->next) 2742 for (w = signals [signum].head; w; w = w->next)
1366 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2743 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1367} 2744}
1368 2745
… …
1447 2824
1448#endif 2825#endif
1449 2826
1450/*****************************************************************************/ 2827/*****************************************************************************/
1451 2828
2829#if EV_USE_IOCP
2830# include "ev_iocp.c"
2831#endif
1452#if EV_USE_PORT 2832#if EV_USE_PORT
1453# include "ev_port.c" 2833# include "ev_port.c"
1454#endif 2834#endif
1455#if EV_USE_KQUEUE 2835#if EV_USE_KQUEUE
1456# include "ev_kqueue.c" 2836# include "ev_kqueue.c"
1457#endif 2837#endif
1458#if EV_USE_EPOLL 2838#if EV_USE_EPOLL
1459# include "ev_epoll.c" 2839# include "ev_epoll.c"
1460#endif 2840#endif
2841#if EV_USE_LINUXAIO
2842# include "ev_linuxaio.c"
2843#endif
2844#if EV_USE_IOURING
2845# include "ev_iouring.c"
2846#endif
1461#if EV_USE_POLL 2847#if EV_USE_POLL
1462# include "ev_poll.c" 2848# include "ev_poll.c"
1463#endif 2849#endif
1464#if EV_USE_SELECT 2850#if EV_USE_SELECT
1465# include "ev_select.c" 2851# include "ev_select.c"
1466#endif 2852#endif
1467 2853
1468int 2854ecb_cold int
1469ev_version_major (void) 2855ev_version_major (void) EV_NOEXCEPT
1470{ 2856{
1471 return EV_VERSION_MAJOR; 2857 return EV_VERSION_MAJOR;
1472} 2858}
1473 2859
1474int 2860ecb_cold int
1475ev_version_minor (void) 2861ev_version_minor (void) EV_NOEXCEPT
1476{ 2862{
1477 return EV_VERSION_MINOR; 2863 return EV_VERSION_MINOR;
1478} 2864}
1479 2865
1480/* return true if we are running with elevated privileges and should ignore env variables */ 2866/* return true if we are running with elevated privileges and should ignore env variables */
1481int inline_size 2867inline_size ecb_cold int
1482enable_secure (void) 2868enable_secure (void)
1483{ 2869{
1484#ifdef _WIN32 2870#ifdef _WIN32
1485 return 0; 2871 return 0;
1486#else 2872#else
1487 return getuid () != geteuid () 2873 return getuid () != geteuid ()
1488 || getgid () != getegid (); 2874 || getgid () != getegid ();
1489#endif 2875#endif
1490} 2876}
1491 2877
2878ecb_cold
1492unsigned int 2879unsigned int
1493ev_supported_backends (void) 2880ev_supported_backends (void) EV_NOEXCEPT
1494{ 2881{
1495 unsigned int flags = 0; 2882 unsigned int flags = 0;
1496 2883
1497 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2884 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1498 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2885 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
1499 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 2886 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2887 if (EV_USE_LINUXAIO) flags |= EVBACKEND_LINUXAIO;
2888 if (EV_USE_IOURING ) flags |= EVBACKEND_IOURING;
1500 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 2889 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
1501 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2890 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
1502 2891
1503 return flags; 2892 return flags;
1504} 2893}
1505 2894
2895ecb_cold
1506unsigned int 2896unsigned int
1507ev_recommended_backends (void) 2897ev_recommended_backends (void) EV_NOEXCEPT
1508{ 2898{
1509 unsigned int flags = ev_supported_backends (); 2899 unsigned int flags = ev_supported_backends ();
1510 2900
1511#ifndef __NetBSD__ 2901#ifndef __NetBSD__
1512 /* kqueue is borked on everything but netbsd apparently */ 2902 /* kqueue is borked on everything but netbsd apparently */
… …
1520#endif 2910#endif
1521#ifdef __FreeBSD__ 2911#ifdef __FreeBSD__
1522 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */ 2912 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1523#endif 2913#endif
1524 2914
2915 /* TODO: linuxaio is very experimental */
2916#if !EV_RECOMMEND_LINUXAIO
2917 flags &= ~EVBACKEND_LINUXAIO;
2918#endif
2919 /* TODO: linuxaio is super experimental */
2920#if !EV_RECOMMEND_IOURING
2921 flags &= ~EVBACKEND_IOURING;
2922#endif
2923
1525 return flags; 2924 return flags;
1526} 2925}
1527 2926
2927ecb_cold
1528unsigned int 2928unsigned int
1529ev_embeddable_backends (void) 2929ev_embeddable_backends (void) EV_NOEXCEPT
1530{ 2930{
1531 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2931 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1532 2932
1533 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2933 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1534 /* please fix it and tell me how to detect the fix */ 2934 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1535 flags &= ~EVBACKEND_EPOLL; 2935 flags &= ~EVBACKEND_EPOLL;
2936
2937 /* EVBACKEND_LINUXAIO is theoretically embeddable, but suffers from a performance overhead */
2938
2939 /* EVBACKEND_IOURING is practically embeddable, but the current implementation is not
2940 * because our backend_fd is the epoll fd we need as fallback.
2941 * if the kernel ever is fixed, this might change...
2942 */
1536 2943
1537 return flags; 2944 return flags;
1538} 2945}
1539 2946
1540unsigned int 2947unsigned int
1541ev_backend (EV_P) 2948ev_backend (EV_P) EV_NOEXCEPT
1542{ 2949{
1543 return backend; 2950 return backend;
1544} 2951}
1545 2952
1546#if EV_FEATURE_API 2953#if EV_FEATURE_API
1547unsigned int 2954unsigned int
1548ev_iteration (EV_P) 2955ev_iteration (EV_P) EV_NOEXCEPT
1549{ 2956{
1550 return loop_count; 2957 return loop_count;
1551} 2958}
1552 2959
1553unsigned int 2960unsigned int
1554ev_depth (EV_P) 2961ev_depth (EV_P) EV_NOEXCEPT
1555{ 2962{
1556 return loop_depth; 2963 return loop_depth;
1557} 2964}
1558 2965
1559void 2966void
1560ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2967ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1561{ 2968{
1562 io_blocktime = interval; 2969 io_blocktime = interval;
1563} 2970}
1564 2971
1565void 2972void
1566ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2973ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1567{ 2974{
1568 timeout_blocktime = interval; 2975 timeout_blocktime = interval;
1569} 2976}
1570 2977
1571void 2978void
1572ev_set_userdata (EV_P_ void *data) 2979ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
1573{ 2980{
1574 userdata = data; 2981 userdata = data;
1575} 2982}
1576 2983
1577void * 2984void *
1578ev_userdata (EV_P) 2985ev_userdata (EV_P) EV_NOEXCEPT
1579{ 2986{
1580 return userdata; 2987 return userdata;
1581} 2988}
1582 2989
2990void
1583void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2991ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
1584{ 2992{
1585 invoke_cb = invoke_pending_cb; 2993 invoke_cb = invoke_pending_cb;
1586} 2994}
1587 2995
2996void
1588void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2997ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
1589{ 2998{
1590 release_cb = release; 2999 release_cb = release;
1591 acquire_cb = acquire; 3000 acquire_cb = acquire;
1592} 3001}
1593#endif 3002#endif
1594 3003
1595/* initialise a loop structure, must be zero-initialised */ 3004/* initialise a loop structure, must be zero-initialised */
1596static void noinline 3005ecb_noinline ecb_cold
3006static void
1597loop_init (EV_P_ unsigned int flags) 3007loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
1598{ 3008{
1599 if (!backend) 3009 if (!backend)
1600 { 3010 {
3011 origflags = flags;
3012
1601#if EV_USE_REALTIME 3013#if EV_USE_REALTIME
1602 if (!have_realtime) 3014 if (!have_realtime)
1603 { 3015 {
1604 struct timespec ts; 3016 struct timespec ts;
1605 3017
… …
1627 if (!(flags & EVFLAG_NOENV) 3039 if (!(flags & EVFLAG_NOENV)
1628 && !enable_secure () 3040 && !enable_secure ()
1629 && getenv ("LIBEV_FLAGS")) 3041 && getenv ("LIBEV_FLAGS"))
1630 flags = atoi (getenv ("LIBEV_FLAGS")); 3042 flags = atoi (getenv ("LIBEV_FLAGS"));
1631 3043
1632 ev_rt_now = ev_time (); 3044 ev_rt_now = ev_time ();
1633 mn_now = get_clock (); 3045 mn_now = get_clock ();
1634 now_floor = mn_now; 3046 now_floor = mn_now;
1635 rtmn_diff = ev_rt_now - mn_now; 3047 rtmn_diff = ev_rt_now - mn_now;
1636#if EV_FEATURE_API 3048#if EV_FEATURE_API
1637 invoke_cb = ev_invoke_pending; 3049 invoke_cb = ev_invoke_pending;
1638#endif 3050#endif
1639 3051
1640 io_blocktime = 0.; 3052 io_blocktime = 0.;
1641 timeout_blocktime = 0.; 3053 timeout_blocktime = 0.;
1642 backend = 0; 3054 backend = 0;
1643 backend_fd = -1; 3055 backend_fd = -1;
1644 sig_pending = 0; 3056 sig_pending = 0;
1645#if EV_ASYNC_ENABLE 3057#if EV_ASYNC_ENABLE
1646 async_pending = 0; 3058 async_pending = 0;
1647#endif 3059#endif
3060 pipe_write_skipped = 0;
3061 pipe_write_wanted = 0;
3062 evpipe [0] = -1;
3063 evpipe [1] = -1;
1648#if EV_USE_INOTIFY 3064#if EV_USE_INOTIFY
1649 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 3065 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1650#endif 3066#endif
1651#if EV_USE_SIGNALFD 3067#if EV_USE_SIGNALFD
1652 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 3068 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1653#endif 3069#endif
1654 3070
1655 if (!(flags & 0x0000ffffU)) 3071 if (!(flags & EVBACKEND_MASK))
1656 flags |= ev_recommended_backends (); 3072 flags |= ev_recommended_backends ();
1657 3073
3074#if EV_USE_IOCP
3075 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
3076#endif
1658#if EV_USE_PORT 3077#if EV_USE_PORT
1659 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 3078 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1660#endif 3079#endif
1661#if EV_USE_KQUEUE 3080#if EV_USE_KQUEUE
1662 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 3081 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
3082#endif
3083#if EV_USE_IOURING
3084 if (!backend && (flags & EVBACKEND_IOURING )) backend = iouring_init (EV_A_ flags);
3085#endif
3086#if EV_USE_LINUXAIO
3087 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
1663#endif 3088#endif
1664#if EV_USE_EPOLL 3089#if EV_USE_EPOLL
1665 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 3090 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
1666#endif 3091#endif
1667#if EV_USE_POLL 3092#if EV_USE_POLL
1668 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 3093 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
1669#endif 3094#endif
1670#if EV_USE_SELECT 3095#if EV_USE_SELECT
1671 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 3096 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
1672#endif 3097#endif
1673 3098
1674 ev_prepare_init (&pending_w, pendingcb); 3099 ev_prepare_init (&pending_w, pendingcb);
1675 3100
1676#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 3101#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
… …
1679#endif 3104#endif
1680 } 3105 }
1681} 3106}
1682 3107
1683/* free up a loop structure */ 3108/* free up a loop structure */
1684static void noinline 3109ecb_cold
3110void
1685loop_destroy (EV_P) 3111ev_loop_destroy (EV_P)
1686{ 3112{
1687 int i; 3113 int i;
3114
3115#if EV_MULTIPLICITY
3116 /* mimic free (0) */
3117 if (!EV_A)
3118 return;
3119#endif
3120
3121#if EV_CLEANUP_ENABLE
3122 /* queue cleanup watchers (and execute them) */
3123 if (ecb_expect_false (cleanupcnt))
3124 {
3125 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
3126 EV_INVOKE_PENDING;
3127 }
3128#endif
3129
3130#if EV_CHILD_ENABLE
3131 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
3132 {
3133 ev_ref (EV_A); /* child watcher */
3134 ev_signal_stop (EV_A_ &childev);
3135 }
3136#endif
1688 3137
1689 if (ev_is_active (&pipe_w)) 3138 if (ev_is_active (&pipe_w))
1690 { 3139 {
1691 /*ev_ref (EV_A);*/ 3140 /*ev_ref (EV_A);*/
1692 /*ev_io_stop (EV_A_ &pipe_w);*/ 3141 /*ev_io_stop (EV_A_ &pipe_w);*/
1693 3142
1694#if EV_USE_EVENTFD
1695 if (evfd >= 0)
1696 close (evfd);
1697#endif
1698
1699 if (evpipe [0] >= 0)
1700 {
1701 EV_WIN32_CLOSE_FD (evpipe [0]); 3143 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1702 EV_WIN32_CLOSE_FD (evpipe [1]); 3144 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1703 }
1704 } 3145 }
1705 3146
1706#if EV_USE_SIGNALFD 3147#if EV_USE_SIGNALFD
1707 if (ev_is_active (&sigfd_w)) 3148 if (ev_is_active (&sigfd_w))
1708 close (sigfd); 3149 close (sigfd);
… …
1714#endif 3155#endif
1715 3156
1716 if (backend_fd >= 0) 3157 if (backend_fd >= 0)
1717 close (backend_fd); 3158 close (backend_fd);
1718 3159
3160#if EV_USE_IOCP
3161 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
3162#endif
1719#if EV_USE_PORT 3163#if EV_USE_PORT
1720 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3164 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1721#endif 3165#endif
1722#if EV_USE_KQUEUE 3166#if EV_USE_KQUEUE
1723 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3167 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
3168#endif
3169#if EV_USE_IOURING
3170 if (backend == EVBACKEND_IOURING ) iouring_destroy (EV_A);
3171#endif
3172#if EV_USE_LINUXAIO
3173 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
1724#endif 3174#endif
1725#if EV_USE_EPOLL 3175#if EV_USE_EPOLL
1726 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3176 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
1727#endif 3177#endif
1728#if EV_USE_POLL 3178#if EV_USE_POLL
1729 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3179 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
1730#endif 3180#endif
1731#if EV_USE_SELECT 3181#if EV_USE_SELECT
1732 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3182 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
1733#endif 3183#endif
1734 3184
1735 for (i = NUMPRI; i--; ) 3185 for (i = NUMPRI; i--; )
1736 { 3186 {
1737 array_free (pending, [i]); 3187 array_free (pending, [i]);
… …
1750 array_free (periodic, EMPTY); 3200 array_free (periodic, EMPTY);
1751#endif 3201#endif
1752#if EV_FORK_ENABLE 3202#if EV_FORK_ENABLE
1753 array_free (fork, EMPTY); 3203 array_free (fork, EMPTY);
1754#endif 3204#endif
3205#if EV_CLEANUP_ENABLE
3206 array_free (cleanup, EMPTY);
3207#endif
1755 array_free (prepare, EMPTY); 3208 array_free (prepare, EMPTY);
1756 array_free (check, EMPTY); 3209 array_free (check, EMPTY);
1757#if EV_ASYNC_ENABLE 3210#if EV_ASYNC_ENABLE
1758 array_free (async, EMPTY); 3211 array_free (async, EMPTY);
1759#endif 3212#endif
1760 3213
1761 backend = 0; 3214 backend = 0;
3215
3216#if EV_MULTIPLICITY
3217 if (ev_is_default_loop (EV_A))
3218#endif
3219 ev_default_loop_ptr = 0;
3220#if EV_MULTIPLICITY
3221 else
3222 ev_free (EV_A);
3223#endif
1762} 3224}
1763 3225
1764#if EV_USE_INOTIFY 3226#if EV_USE_INOTIFY
1765inline_size void infy_fork (EV_P); 3227inline_size void infy_fork (EV_P);
1766#endif 3228#endif
1767 3229
1768inline_size void 3230inline_size void
1769loop_fork (EV_P) 3231loop_fork (EV_P)
1770{ 3232{
1771#if EV_USE_PORT 3233#if EV_USE_PORT
1772 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3234 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1773#endif 3235#endif
1774#if EV_USE_KQUEUE 3236#if EV_USE_KQUEUE
1775 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 3237 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
3238#endif
3239#if EV_USE_IOURING
3240 if (backend == EVBACKEND_IOURING ) iouring_fork (EV_A);
3241#endif
3242#if EV_USE_LINUXAIO
3243 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
1776#endif 3244#endif
1777#if EV_USE_EPOLL 3245#if EV_USE_EPOLL
1778 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3246 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
1779#endif 3247#endif
1780#if EV_USE_INOTIFY 3248#if EV_USE_INOTIFY
1781 infy_fork (EV_A); 3249 infy_fork (EV_A);
1782#endif 3250#endif
1783 3251
3252#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1784 if (ev_is_active (&pipe_w)) 3253 if (ev_is_active (&pipe_w) && postfork != 2)
1785 { 3254 {
1786 /* this "locks" the handlers against writing to the pipe */ 3255 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1787 /* while we modify the fd vars */
1788 sig_pending = 1;
1789#if EV_ASYNC_ENABLE
1790 async_pending = 1;
1791#endif
1792 3256
1793 ev_ref (EV_A); 3257 ev_ref (EV_A);
1794 ev_io_stop (EV_A_ &pipe_w); 3258 ev_io_stop (EV_A_ &pipe_w);
1795 3259
1796#if EV_USE_EVENTFD
1797 if (evfd >= 0)
1798 close (evfd);
1799#endif
1800
1801 if (evpipe [0] >= 0) 3260 if (evpipe [0] >= 0)
1802 {
1803 EV_WIN32_CLOSE_FD (evpipe [0]); 3261 EV_WIN32_CLOSE_FD (evpipe [0]);
1804 EV_WIN32_CLOSE_FD (evpipe [1]);
1805 }
1806 3262
1807#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1808 evpipe_init (EV_A); 3263 evpipe_init (EV_A);
1809 /* now iterate over everything, in case we missed something */ 3264 /* iterate over everything, in case we missed something before */
1810 pipecb (EV_A_ &pipe_w, EV_READ); 3265 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1811#endif
1812 } 3266 }
3267#endif
1813 3268
1814 postfork = 0; 3269 postfork = 0;
1815} 3270}
1816 3271
1817#if EV_MULTIPLICITY 3272#if EV_MULTIPLICITY
1818 3273
3274ecb_cold
1819struct ev_loop * 3275struct ev_loop *
1820ev_loop_new (unsigned int flags) 3276ev_loop_new (unsigned int flags) EV_NOEXCEPT
1821{ 3277{
1822 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3278 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1823 3279
1824 memset (EV_A, 0, sizeof (struct ev_loop)); 3280 memset (EV_A, 0, sizeof (struct ev_loop));
1825 loop_init (EV_A_ flags); 3281 loop_init (EV_A_ flags);
1826 3282
1827 if (ev_backend (EV_A)) 3283 if (ev_backend (EV_A))
1828 return EV_A; 3284 return EV_A;
1829 3285
3286 ev_free (EV_A);
1830 return 0; 3287 return 0;
1831} 3288}
1832 3289
1833void
1834ev_loop_destroy (EV_P)
1835{
1836 loop_destroy (EV_A);
1837 ev_free (loop);
1838}
1839
1840void
1841ev_loop_fork (EV_P)
1842{
1843 postfork = 1; /* must be in line with ev_default_fork */
1844}
1845#endif /* multiplicity */ 3290#endif /* multiplicity */
1846 3291
1847#if EV_VERIFY 3292#if EV_VERIFY
1848static void noinline 3293ecb_noinline ecb_cold
3294static void
1849verify_watcher (EV_P_ W w) 3295verify_watcher (EV_P_ W w)
1850{ 3296{
1851 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3297 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1852 3298
1853 if (w->pending) 3299 if (w->pending)
1854 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3300 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1855} 3301}
1856 3302
1857static void noinline 3303ecb_noinline ecb_cold
3304static void
1858verify_heap (EV_P_ ANHE *heap, int N) 3305verify_heap (EV_P_ ANHE *heap, int N)
1859{ 3306{
1860 int i; 3307 int i;
1861 3308
1862 for (i = HEAP0; i < N + HEAP0; ++i) 3309 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1867 3314
1868 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3315 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1869 } 3316 }
1870} 3317}
1871 3318
1872static void noinline 3319ecb_noinline ecb_cold
3320static void
1873array_verify (EV_P_ W *ws, int cnt) 3321array_verify (EV_P_ W *ws, int cnt)
1874{ 3322{
1875 while (cnt--) 3323 while (cnt--)
1876 { 3324 {
1877 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3325 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
1879 } 3327 }
1880} 3328}
1881#endif 3329#endif
1882 3330
1883#if EV_FEATURE_API 3331#if EV_FEATURE_API
1884void 3332void ecb_cold
1885ev_verify (EV_P) 3333ev_verify (EV_P) EV_NOEXCEPT
1886{ 3334{
1887#if EV_VERIFY 3335#if EV_VERIFY
1888 int i; 3336 int i;
1889 WL w; 3337 WL w, w2;
1890 3338
1891 assert (activecnt >= -1); 3339 assert (activecnt >= -1);
1892 3340
1893 assert (fdchangemax >= fdchangecnt); 3341 assert (fdchangemax >= fdchangecnt);
1894 for (i = 0; i < fdchangecnt; ++i) 3342 for (i = 0; i < fdchangecnt; ++i)
1895 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3343 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1896 3344
1897 assert (anfdmax >= 0); 3345 assert (anfdmax >= 0);
1898 for (i = 0; i < anfdmax; ++i) 3346 for (i = 0; i < anfdmax; ++i)
3347 {
3348 int j = 0;
3349
1899 for (w = anfds [i].head; w; w = w->next) 3350 for (w = w2 = anfds [i].head; w; w = w->next)
1900 { 3351 {
1901 verify_watcher (EV_A_ (W)w); 3352 verify_watcher (EV_A_ (W)w);
3353
3354 if (j++ & 1)
3355 {
3356 assert (("libev: io watcher list contains a loop", w != w2));
3357 w2 = w2->next;
3358 }
3359
1902 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3360 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1903 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 3361 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1904 } 3362 }
3363 }
1905 3364
1906 assert (timermax >= timercnt); 3365 assert (timermax >= timercnt);
1907 verify_heap (EV_A_ timers, timercnt); 3366 verify_heap (EV_A_ timers, timercnt);
1908 3367
1909#if EV_PERIODIC_ENABLE 3368#if EV_PERIODIC_ENABLE
… …
1924#if EV_FORK_ENABLE 3383#if EV_FORK_ENABLE
1925 assert (forkmax >= forkcnt); 3384 assert (forkmax >= forkcnt);
1926 array_verify (EV_A_ (W *)forks, forkcnt); 3385 array_verify (EV_A_ (W *)forks, forkcnt);
1927#endif 3386#endif
1928 3387
3388#if EV_CLEANUP_ENABLE
3389 assert (cleanupmax >= cleanupcnt);
3390 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
3391#endif
3392
1929#if EV_ASYNC_ENABLE 3393#if EV_ASYNC_ENABLE
1930 assert (asyncmax >= asynccnt); 3394 assert (asyncmax >= asynccnt);
1931 array_verify (EV_A_ (W *)asyncs, asynccnt); 3395 array_verify (EV_A_ (W *)asyncs, asynccnt);
1932#endif 3396#endif
1933 3397
… …
1950#endif 3414#endif
1951} 3415}
1952#endif 3416#endif
1953 3417
1954#if EV_MULTIPLICITY 3418#if EV_MULTIPLICITY
3419ecb_cold
1955struct ev_loop * 3420struct ev_loop *
1956ev_default_loop_init (unsigned int flags)
1957#else 3421#else
1958int 3422int
3423#endif
1959ev_default_loop (unsigned int flags) 3424ev_default_loop (unsigned int flags) EV_NOEXCEPT
1960#endif
1961{ 3425{
1962 if (!ev_default_loop_ptr) 3426 if (!ev_default_loop_ptr)
1963 { 3427 {
1964#if EV_MULTIPLICITY 3428#if EV_MULTIPLICITY
1965 EV_P = ev_default_loop_ptr = &default_loop_struct; 3429 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1984 3448
1985 return ev_default_loop_ptr; 3449 return ev_default_loop_ptr;
1986} 3450}
1987 3451
1988void 3452void
1989ev_default_destroy (void) 3453ev_loop_fork (EV_P) EV_NOEXCEPT
1990{ 3454{
1991#if EV_MULTIPLICITY 3455 postfork = 1;
1992 EV_P = ev_default_loop_ptr;
1993#endif
1994
1995 ev_default_loop_ptr = 0;
1996
1997#if EV_CHILD_ENABLE
1998 ev_ref (EV_A); /* child watcher */
1999 ev_signal_stop (EV_A_ &childev);
2000#endif
2001
2002 loop_destroy (EV_A);
2003}
2004
2005void
2006ev_default_fork (void)
2007{
2008#if EV_MULTIPLICITY
2009 EV_P = ev_default_loop_ptr;
2010#endif
2011
2012 postfork = 1; /* must be in line with ev_loop_fork */
2013} 3456}
2014 3457
2015/*****************************************************************************/ 3458/*****************************************************************************/
2016 3459
2017void 3460void
… …
2019{ 3462{
2020 EV_CB_INVOKE ((W)w, revents); 3463 EV_CB_INVOKE ((W)w, revents);
2021} 3464}
2022 3465
2023unsigned int 3466unsigned int
2024ev_pending_count (EV_P) 3467ev_pending_count (EV_P) EV_NOEXCEPT
2025{ 3468{
2026 int pri; 3469 int pri;
2027 unsigned int count = 0; 3470 unsigned int count = 0;
2028 3471
2029 for (pri = NUMPRI; pri--; ) 3472 for (pri = NUMPRI; pri--; )
2030 count += pendingcnt [pri]; 3473 count += pendingcnt [pri];
2031 3474
2032 return count; 3475 return count;
2033} 3476}
2034 3477
2035void noinline 3478ecb_noinline
3479void
2036ev_invoke_pending (EV_P) 3480ev_invoke_pending (EV_P)
2037{ 3481{
2038 int pri; 3482 pendingpri = NUMPRI;
2039 3483
2040 for (pri = NUMPRI; pri--; ) 3484 do
3485 {
3486 --pendingpri;
3487
3488 /* pendingpri possibly gets modified in the inner loop */
2041 while (pendingcnt [pri]) 3489 while (pendingcnt [pendingpri])
2042 { 3490 {
2043 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3491 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2044 3492
2045 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2046 /* ^ this is no longer true, as pending_w could be here */
2047
2048 p->w->pending = 0; 3493 p->w->pending = 0;
2049 EV_CB_INVOKE (p->w, p->events); 3494 EV_CB_INVOKE (p->w, p->events);
2050 EV_FREQUENT_CHECK; 3495 EV_FREQUENT_CHECK;
2051 } 3496 }
3497 }
3498 while (pendingpri);
2052} 3499}
2053 3500
2054#if EV_IDLE_ENABLE 3501#if EV_IDLE_ENABLE
2055/* make idle watchers pending. this handles the "call-idle */ 3502/* make idle watchers pending. this handles the "call-idle */
2056/* only when higher priorities are idle" logic */ 3503/* only when higher priorities are idle" logic */
2057inline_size void 3504inline_size void
2058idle_reify (EV_P) 3505idle_reify (EV_P)
2059{ 3506{
2060 if (expect_false (idleall)) 3507 if (ecb_expect_false (idleall))
2061 { 3508 {
2062 int pri; 3509 int pri;
2063 3510
2064 for (pri = NUMPRI; pri--; ) 3511 for (pri = NUMPRI; pri--; )
2065 { 3512 {
… …
2113 feed_reverse_done (EV_A_ EV_TIMER); 3560 feed_reverse_done (EV_A_ EV_TIMER);
2114 } 3561 }
2115} 3562}
2116 3563
2117#if EV_PERIODIC_ENABLE 3564#if EV_PERIODIC_ENABLE
3565
3566ecb_noinline
3567static void
3568periodic_recalc (EV_P_ ev_periodic *w)
3569{
3570 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3571 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3572
3573 /* the above almost always errs on the low side */
3574 while (at <= ev_rt_now)
3575 {
3576 ev_tstamp nat = at + w->interval;
3577
3578 /* when resolution fails us, we use ev_rt_now */
3579 if (ecb_expect_false (nat == at))
3580 {
3581 at = ev_rt_now;
3582 break;
3583 }
3584
3585 at = nat;
3586 }
3587
3588 ev_at (w) = at;
3589}
3590
2118/* make periodics pending */ 3591/* make periodics pending */
2119inline_size void 3592inline_size void
2120periodics_reify (EV_P) 3593periodics_reify (EV_P)
2121{ 3594{
2122 EV_FREQUENT_CHECK; 3595 EV_FREQUENT_CHECK;
2123 3596
2124 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3597 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2125 { 3598 {
2126 int feed_count = 0;
2127
2128 do 3599 do
2129 { 3600 {
2130 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3601 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2131 3602
2132 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3603 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2141 ANHE_at_cache (periodics [HEAP0]); 3612 ANHE_at_cache (periodics [HEAP0]);
2142 downheap (periodics, periodiccnt, HEAP0); 3613 downheap (periodics, periodiccnt, HEAP0);
2143 } 3614 }
2144 else if (w->interval) 3615 else if (w->interval)
2145 { 3616 {
2146 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3617 periodic_recalc (EV_A_ w);
2147 /* if next trigger time is not sufficiently in the future, put it there */
2148 /* this might happen because of floating point inexactness */
2149 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2150 {
2151 ev_at (w) += w->interval;
2152
2153 /* if interval is unreasonably low we might still have a time in the past */
2154 /* so correct this. this will make the periodic very inexact, but the user */
2155 /* has effectively asked to get triggered more often than possible */
2156 if (ev_at (w) < ev_rt_now)
2157 ev_at (w) = ev_rt_now;
2158 }
2159
2160 ANHE_at_cache (periodics [HEAP0]); 3618 ANHE_at_cache (periodics [HEAP0]);
2161 downheap (periodics, periodiccnt, HEAP0); 3619 downheap (periodics, periodiccnt, HEAP0);
2162 } 3620 }
2163 else 3621 else
2164 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3622 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2171 feed_reverse_done (EV_A_ EV_PERIODIC); 3629 feed_reverse_done (EV_A_ EV_PERIODIC);
2172 } 3630 }
2173} 3631}
2174 3632
2175/* simply recalculate all periodics */ 3633/* simply recalculate all periodics */
2176/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 3634/* TODO: maybe ensure that at least one event happens when jumping forward? */
2177static void noinline 3635ecb_noinline ecb_cold
3636static void
2178periodics_reschedule (EV_P) 3637periodics_reschedule (EV_P)
2179{ 3638{
2180 int i; 3639 int i;
2181 3640
2182 /* adjust periodics after time jump */ 3641 /* adjust periodics after time jump */
… …
2185 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3644 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2186 3645
2187 if (w->reschedule_cb) 3646 if (w->reschedule_cb)
2188 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3647 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2189 else if (w->interval) 3648 else if (w->interval)
2190 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3649 periodic_recalc (EV_A_ w);
2191 3650
2192 ANHE_at_cache (periodics [i]); 3651 ANHE_at_cache (periodics [i]);
2193 } 3652 }
2194 3653
2195 reheap (periodics, periodiccnt); 3654 reheap (periodics, periodiccnt);
2196} 3655}
2197#endif 3656#endif
2198 3657
2199/* adjust all timers by a given offset */ 3658/* adjust all timers by a given offset */
2200static void noinline 3659ecb_noinline ecb_cold
3660static void
2201timers_reschedule (EV_P_ ev_tstamp adjust) 3661timers_reschedule (EV_P_ ev_tstamp adjust)
2202{ 3662{
2203 int i; 3663 int i;
2204 3664
2205 for (i = 0; i < timercnt; ++i) 3665 for (i = 0; i < timercnt; ++i)
… …
2214/* also detect if there was a timejump, and act accordingly */ 3674/* also detect if there was a timejump, and act accordingly */
2215inline_speed void 3675inline_speed void
2216time_update (EV_P_ ev_tstamp max_block) 3676time_update (EV_P_ ev_tstamp max_block)
2217{ 3677{
2218#if EV_USE_MONOTONIC 3678#if EV_USE_MONOTONIC
2219 if (expect_true (have_monotonic)) 3679 if (ecb_expect_true (have_monotonic))
2220 { 3680 {
2221 int i; 3681 int i;
2222 ev_tstamp odiff = rtmn_diff; 3682 ev_tstamp odiff = rtmn_diff;
2223 3683
2224 mn_now = get_clock (); 3684 mn_now = get_clock ();
2225 3685
2226 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3686 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
2227 /* interpolate in the meantime */ 3687 /* interpolate in the meantime */
2228 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 3688 if (ecb_expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
2229 { 3689 {
2230 ev_rt_now = rtmn_diff + mn_now; 3690 ev_rt_now = rtmn_diff + mn_now;
2231 return; 3691 return;
2232 } 3692 }
2233 3693
… …
2242 * doesn't hurt either as we only do this on time-jumps or 3702 * doesn't hurt either as we only do this on time-jumps or
2243 * in the unlikely event of having been preempted here. 3703 * in the unlikely event of having been preempted here.
2244 */ 3704 */
2245 for (i = 4; --i; ) 3705 for (i = 4; --i; )
2246 { 3706 {
3707 ev_tstamp diff;
2247 rtmn_diff = ev_rt_now - mn_now; 3708 rtmn_diff = ev_rt_now - mn_now;
2248 3709
3710 diff = odiff - rtmn_diff;
3711
2249 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3712 if (ecb_expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2250 return; /* all is well */ 3713 return; /* all is well */
2251 3714
2252 ev_rt_now = ev_time (); 3715 ev_rt_now = ev_time ();
2253 mn_now = get_clock (); 3716 mn_now = get_clock ();
2254 now_floor = mn_now; 3717 now_floor = mn_now;
… …
2263 else 3726 else
2264#endif 3727#endif
2265 { 3728 {
2266 ev_rt_now = ev_time (); 3729 ev_rt_now = ev_time ();
2267 3730
2268 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 3731 if (ecb_expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
2269 { 3732 {
2270 /* adjust timers. this is easy, as the offset is the same for all of them */ 3733 /* adjust timers. this is easy, as the offset is the same for all of them */
2271 timers_reschedule (EV_A_ ev_rt_now - mn_now); 3734 timers_reschedule (EV_A_ ev_rt_now - mn_now);
2272#if EV_PERIODIC_ENABLE 3735#if EV_PERIODIC_ENABLE
2273 periodics_reschedule (EV_A); 3736 periodics_reschedule (EV_A);
… …
2276 3739
2277 mn_now = ev_rt_now; 3740 mn_now = ev_rt_now;
2278 } 3741 }
2279} 3742}
2280 3743
2281void 3744int
2282ev_loop (EV_P_ int flags) 3745ev_run (EV_P_ int flags)
2283{ 3746{
2284#if EV_FEATURE_API 3747#if EV_FEATURE_API
2285 ++loop_depth; 3748 ++loop_depth;
2286#endif 3749#endif
2287 3750
2288 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 3751 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2289 3752
2290 loop_done = EVUNLOOP_CANCEL; 3753 loop_done = EVBREAK_CANCEL;
2291 3754
2292 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 3755 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2293 3756
2294 do 3757 do
2295 { 3758 {
2296#if EV_VERIFY >= 2 3759#if EV_VERIFY >= 2
2297 ev_verify (EV_A); 3760 ev_verify (EV_A);
2298#endif 3761#endif
2299 3762
2300#ifndef _WIN32 3763#ifndef _WIN32
2301 if (expect_false (curpid)) /* penalise the forking check even more */ 3764 if (ecb_expect_false (curpid)) /* penalise the forking check even more */
2302 if (expect_false (getpid () != curpid)) 3765 if (ecb_expect_false (getpid () != curpid))
2303 { 3766 {
2304 curpid = getpid (); 3767 curpid = getpid ();
2305 postfork = 1; 3768 postfork = 1;
2306 } 3769 }
2307#endif 3770#endif
2308 3771
2309#if EV_FORK_ENABLE 3772#if EV_FORK_ENABLE
2310 /* we might have forked, so queue fork handlers */ 3773 /* we might have forked, so queue fork handlers */
2311 if (expect_false (postfork)) 3774 if (ecb_expect_false (postfork))
2312 if (forkcnt) 3775 if (forkcnt)
2313 { 3776 {
2314 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3777 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2315 EV_INVOKE_PENDING; 3778 EV_INVOKE_PENDING;
2316 } 3779 }
2317#endif 3780#endif
2318 3781
2319#if EV_PREPARE_ENABLE 3782#if EV_PREPARE_ENABLE
2320 /* queue prepare watchers (and execute them) */ 3783 /* queue prepare watchers (and execute them) */
2321 if (expect_false (preparecnt)) 3784 if (ecb_expect_false (preparecnt))
2322 { 3785 {
2323 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3786 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2324 EV_INVOKE_PENDING; 3787 EV_INVOKE_PENDING;
2325 } 3788 }
2326#endif 3789#endif
2327 3790
2328 if (expect_false (loop_done)) 3791 if (ecb_expect_false (loop_done))
2329 break; 3792 break;
2330 3793
2331 /* we might have forked, so reify kernel state if necessary */ 3794 /* we might have forked, so reify kernel state if necessary */
2332 if (expect_false (postfork)) 3795 if (ecb_expect_false (postfork))
2333 loop_fork (EV_A); 3796 loop_fork (EV_A);
2334 3797
2335 /* update fd-related kernel structures */ 3798 /* update fd-related kernel structures */
2336 fd_reify (EV_A); 3799 fd_reify (EV_A);
2337 3800
2338 /* calculate blocking time */ 3801 /* calculate blocking time */
2339 { 3802 {
2340 ev_tstamp waittime = 0.; 3803 ev_tstamp waittime = 0.;
2341 ev_tstamp sleeptime = 0.; 3804 ev_tstamp sleeptime = 0.;
2342 3805
3806 /* remember old timestamp for io_blocktime calculation */
3807 ev_tstamp prev_mn_now = mn_now;
3808
3809 /* update time to cancel out callback processing overhead */
3810 time_update (EV_A_ 1e100);
3811
3812 /* from now on, we want a pipe-wake-up */
3813 pipe_write_wanted = 1;
3814
3815 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3816
2343 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3817 if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2344 { 3818 {
2345 /* remember old timestamp for io_blocktime calculation */
2346 ev_tstamp prev_mn_now = mn_now;
2347
2348 /* update time to cancel out callback processing overhead */
2349 time_update (EV_A_ 1e100);
2350
2351 waittime = MAX_BLOCKTIME; 3819 waittime = MAX_BLOCKTIME;
2352 3820
2353 if (timercnt) 3821 if (timercnt)
2354 { 3822 {
2355 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3823 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2356 if (waittime > to) waittime = to; 3824 if (waittime > to) waittime = to;
2357 } 3825 }
2358 3826
2359#if EV_PERIODIC_ENABLE 3827#if EV_PERIODIC_ENABLE
2360 if (periodiccnt) 3828 if (periodiccnt)
2361 { 3829 {
2362 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3830 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2363 if (waittime > to) waittime = to; 3831 if (waittime > to) waittime = to;
2364 } 3832 }
2365#endif 3833#endif
2366 3834
2367 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3835 /* don't let timeouts decrease the waittime below timeout_blocktime */
2368 if (expect_false (waittime < timeout_blocktime)) 3836 if (ecb_expect_false (waittime < timeout_blocktime))
2369 waittime = timeout_blocktime; 3837 waittime = timeout_blocktime;
2370 3838
3839 /* at this point, we NEED to wait, so we have to ensure */
3840 /* to pass a minimum nonzero value to the backend */
3841 if (ecb_expect_false (waittime < backend_mintime))
3842 waittime = backend_mintime;
3843
2371 /* extra check because io_blocktime is commonly 0 */ 3844 /* extra check because io_blocktime is commonly 0 */
2372 if (expect_false (io_blocktime)) 3845 if (ecb_expect_false (io_blocktime))
2373 { 3846 {
2374 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3847 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2375 3848
2376 if (sleeptime > waittime - backend_fudge) 3849 if (sleeptime > waittime - backend_mintime)
2377 sleeptime = waittime - backend_fudge; 3850 sleeptime = waittime - backend_mintime;
2378 3851
2379 if (expect_true (sleeptime > 0.)) 3852 if (ecb_expect_true (sleeptime > 0.))
2380 { 3853 {
2381 ev_sleep (sleeptime); 3854 ev_sleep (sleeptime);
2382 waittime -= sleeptime; 3855 waittime -= sleeptime;
2383 } 3856 }
2384 } 3857 }
2385 } 3858 }
2386 3859
2387#if EV_FEATURE_API 3860#if EV_FEATURE_API
2388 ++loop_count; 3861 ++loop_count;
2389#endif 3862#endif
2390 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3863 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2391 backend_poll (EV_A_ waittime); 3864 backend_poll (EV_A_ waittime);
2392 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 3865 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3866
3867 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3868
3869 ECB_MEMORY_FENCE_ACQUIRE;
3870 if (pipe_write_skipped)
3871 {
3872 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3873 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3874 }
2393 3875
2394 /* update ev_rt_now, do magic */ 3876 /* update ev_rt_now, do magic */
2395 time_update (EV_A_ waittime + sleeptime); 3877 time_update (EV_A_ waittime + sleeptime);
2396 } 3878 }
2397 3879
… …
2406 idle_reify (EV_A); 3888 idle_reify (EV_A);
2407#endif 3889#endif
2408 3890
2409#if EV_CHECK_ENABLE 3891#if EV_CHECK_ENABLE
2410 /* queue check watchers, to be executed first */ 3892 /* queue check watchers, to be executed first */
2411 if (expect_false (checkcnt)) 3893 if (ecb_expect_false (checkcnt))
2412 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3894 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2413#endif 3895#endif
2414 3896
2415 EV_INVOKE_PENDING; 3897 EV_INVOKE_PENDING;
2416 } 3898 }
2417 while (expect_true ( 3899 while (ecb_expect_true (
2418 activecnt 3900 activecnt
2419 && !loop_done 3901 && !loop_done
2420 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3902 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2421 )); 3903 ));
2422 3904
2423 if (loop_done == EVUNLOOP_ONE) 3905 if (loop_done == EVBREAK_ONE)
2424 loop_done = EVUNLOOP_CANCEL; 3906 loop_done = EVBREAK_CANCEL;
2425 3907
2426#if EV_FEATURE_API 3908#if EV_FEATURE_API
2427 --loop_depth; 3909 --loop_depth;
2428#endif 3910#endif
2429}
2430 3911
3912 return activecnt;
3913}
3914
2431void 3915void
2432ev_unloop (EV_P_ int how) 3916ev_break (EV_P_ int how) EV_NOEXCEPT
2433{ 3917{
2434 loop_done = how; 3918 loop_done = how;
2435} 3919}
2436 3920
2437void 3921void
2438ev_ref (EV_P) 3922ev_ref (EV_P) EV_NOEXCEPT
2439{ 3923{
2440 ++activecnt; 3924 ++activecnt;
2441} 3925}
2442 3926
2443void 3927void
2444ev_unref (EV_P) 3928ev_unref (EV_P) EV_NOEXCEPT
2445{ 3929{
2446 --activecnt; 3930 --activecnt;
2447} 3931}
2448 3932
2449void 3933void
2450ev_now_update (EV_P) 3934ev_now_update (EV_P) EV_NOEXCEPT
2451{ 3935{
2452 time_update (EV_A_ 1e100); 3936 time_update (EV_A_ 1e100);
2453} 3937}
2454 3938
2455void 3939void
2456ev_suspend (EV_P) 3940ev_suspend (EV_P) EV_NOEXCEPT
2457{ 3941{
2458 ev_now_update (EV_A); 3942 ev_now_update (EV_A);
2459} 3943}
2460 3944
2461void 3945void
2462ev_resume (EV_P) 3946ev_resume (EV_P) EV_NOEXCEPT
2463{ 3947{
2464 ev_tstamp mn_prev = mn_now; 3948 ev_tstamp mn_prev = mn_now;
2465 3949
2466 ev_now_update (EV_A); 3950 ev_now_update (EV_A);
2467 timers_reschedule (EV_A_ mn_now - mn_prev); 3951 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2484inline_size void 3968inline_size void
2485wlist_del (WL *head, WL elem) 3969wlist_del (WL *head, WL elem)
2486{ 3970{
2487 while (*head) 3971 while (*head)
2488 { 3972 {
2489 if (expect_true (*head == elem)) 3973 if (ecb_expect_true (*head == elem))
2490 { 3974 {
2491 *head = elem->next; 3975 *head = elem->next;
2492 break; 3976 break;
2493 } 3977 }
2494 3978
… …
2506 w->pending = 0; 3990 w->pending = 0;
2507 } 3991 }
2508} 3992}
2509 3993
2510int 3994int
2511ev_clear_pending (EV_P_ void *w) 3995ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
2512{ 3996{
2513 W w_ = (W)w; 3997 W w_ = (W)w;
2514 int pending = w_->pending; 3998 int pending = w_->pending;
2515 3999
2516 if (expect_true (pending)) 4000 if (ecb_expect_true (pending))
2517 { 4001 {
2518 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 4002 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2519 p->w = (W)&pending_w; 4003 p->w = (W)&pending_w;
2520 w_->pending = 0; 4004 w_->pending = 0;
2521 return p->events; 4005 return p->events;
… …
2548 w->active = 0; 4032 w->active = 0;
2549} 4033}
2550 4034
2551/*****************************************************************************/ 4035/*****************************************************************************/
2552 4036
2553void noinline 4037ecb_noinline
4038void
2554ev_io_start (EV_P_ ev_io *w) 4039ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
2555{ 4040{
2556 int fd = w->fd; 4041 int fd = w->fd;
2557 4042
2558 if (expect_false (ev_is_active (w))) 4043 if (ecb_expect_false (ev_is_active (w)))
2559 return; 4044 return;
2560 4045
2561 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 4046 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2562 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 4047 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2563 4048
4049#if EV_VERIFY >= 2
4050 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
4051#endif
2564 EV_FREQUENT_CHECK; 4052 EV_FREQUENT_CHECK;
2565 4053
2566 ev_start (EV_A_ (W)w, 1); 4054 ev_start (EV_A_ (W)w, 1);
2567 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 4055 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
2568 wlist_add (&anfds[fd].head, (WL)w); 4056 wlist_add (&anfds[fd].head, (WL)w);
4057
4058 /* common bug, apparently */
4059 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
2569 4060
2570 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 4061 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2571 w->events &= ~EV__IOFDSET; 4062 w->events &= ~EV__IOFDSET;
2572 4063
2573 EV_FREQUENT_CHECK; 4064 EV_FREQUENT_CHECK;
2574} 4065}
2575 4066
2576void noinline 4067ecb_noinline
4068void
2577ev_io_stop (EV_P_ ev_io *w) 4069ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
2578{ 4070{
2579 clear_pending (EV_A_ (W)w); 4071 clear_pending (EV_A_ (W)w);
2580 if (expect_false (!ev_is_active (w))) 4072 if (ecb_expect_false (!ev_is_active (w)))
2581 return; 4073 return;
2582 4074
2583 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 4075 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2584 4076
4077#if EV_VERIFY >= 2
4078 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
4079#endif
2585 EV_FREQUENT_CHECK; 4080 EV_FREQUENT_CHECK;
2586 4081
2587 wlist_del (&anfds[w->fd].head, (WL)w); 4082 wlist_del (&anfds[w->fd].head, (WL)w);
2588 ev_stop (EV_A_ (W)w); 4083 ev_stop (EV_A_ (W)w);
2589 4084
2590 fd_change (EV_A_ w->fd, 1); 4085 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2591 4086
2592 EV_FREQUENT_CHECK; 4087 EV_FREQUENT_CHECK;
2593} 4088}
2594 4089
2595void noinline 4090ecb_noinline
4091void
2596ev_timer_start (EV_P_ ev_timer *w) 4092ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
2597{ 4093{
2598 if (expect_false (ev_is_active (w))) 4094 if (ecb_expect_false (ev_is_active (w)))
2599 return; 4095 return;
2600 4096
2601 ev_at (w) += mn_now; 4097 ev_at (w) += mn_now;
2602 4098
2603 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 4099 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2604 4100
2605 EV_FREQUENT_CHECK; 4101 EV_FREQUENT_CHECK;
2606 4102
2607 ++timercnt; 4103 ++timercnt;
2608 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 4104 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
2609 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 4105 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
2610 ANHE_w (timers [ev_active (w)]) = (WT)w; 4106 ANHE_w (timers [ev_active (w)]) = (WT)w;
2611 ANHE_at_cache (timers [ev_active (w)]); 4107 ANHE_at_cache (timers [ev_active (w)]);
2612 upheap (timers, ev_active (w)); 4108 upheap (timers, ev_active (w));
2613 4109
2614 EV_FREQUENT_CHECK; 4110 EV_FREQUENT_CHECK;
2615 4111
2616 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 4112 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2617} 4113}
2618 4114
2619void noinline 4115ecb_noinline
4116void
2620ev_timer_stop (EV_P_ ev_timer *w) 4117ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
2621{ 4118{
2622 clear_pending (EV_A_ (W)w); 4119 clear_pending (EV_A_ (W)w);
2623 if (expect_false (!ev_is_active (w))) 4120 if (ecb_expect_false (!ev_is_active (w)))
2624 return; 4121 return;
2625 4122
2626 EV_FREQUENT_CHECK; 4123 EV_FREQUENT_CHECK;
2627 4124
2628 { 4125 {
… …
2630 4127
2631 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 4128 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2632 4129
2633 --timercnt; 4130 --timercnt;
2634 4131
2635 if (expect_true (active < timercnt + HEAP0)) 4132 if (ecb_expect_true (active < timercnt + HEAP0))
2636 { 4133 {
2637 timers [active] = timers [timercnt + HEAP0]; 4134 timers [active] = timers [timercnt + HEAP0];
2638 adjustheap (timers, timercnt, active); 4135 adjustheap (timers, timercnt, active);
2639 } 4136 }
2640 } 4137 }
… …
2644 ev_stop (EV_A_ (W)w); 4141 ev_stop (EV_A_ (W)w);
2645 4142
2646 EV_FREQUENT_CHECK; 4143 EV_FREQUENT_CHECK;
2647} 4144}
2648 4145
2649void noinline 4146ecb_noinline
4147void
2650ev_timer_again (EV_P_ ev_timer *w) 4148ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
2651{ 4149{
2652 EV_FREQUENT_CHECK; 4150 EV_FREQUENT_CHECK;
4151
4152 clear_pending (EV_A_ (W)w);
2653 4153
2654 if (ev_is_active (w)) 4154 if (ev_is_active (w))
2655 { 4155 {
2656 if (w->repeat) 4156 if (w->repeat)
2657 { 4157 {
… …
2670 4170
2671 EV_FREQUENT_CHECK; 4171 EV_FREQUENT_CHECK;
2672} 4172}
2673 4173
2674ev_tstamp 4174ev_tstamp
2675ev_timer_remaining (EV_P_ ev_timer *w) 4175ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
2676{ 4176{
2677 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4177 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2678} 4178}
2679 4179
2680#if EV_PERIODIC_ENABLE 4180#if EV_PERIODIC_ENABLE
2681void noinline 4181ecb_noinline
4182void
2682ev_periodic_start (EV_P_ ev_periodic *w) 4183ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
2683{ 4184{
2684 if (expect_false (ev_is_active (w))) 4185 if (ecb_expect_false (ev_is_active (w)))
2685 return; 4186 return;
2686 4187
2687 if (w->reschedule_cb) 4188 if (w->reschedule_cb)
2688 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4189 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2689 else if (w->interval) 4190 else if (w->interval)
2690 { 4191 {
2691 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 4192 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2692 /* this formula differs from the one in periodic_reify because we do not always round up */ 4193 periodic_recalc (EV_A_ w);
2693 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2694 } 4194 }
2695 else 4195 else
2696 ev_at (w) = w->offset; 4196 ev_at (w) = w->offset;
2697 4197
2698 EV_FREQUENT_CHECK; 4198 EV_FREQUENT_CHECK;
2699 4199
2700 ++periodiccnt; 4200 ++periodiccnt;
2701 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4201 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2702 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4202 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
2703 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4203 ANHE_w (periodics [ev_active (w)]) = (WT)w;
2704 ANHE_at_cache (periodics [ev_active (w)]); 4204 ANHE_at_cache (periodics [ev_active (w)]);
2705 upheap (periodics, ev_active (w)); 4205 upheap (periodics, ev_active (w));
2706 4206
2707 EV_FREQUENT_CHECK; 4207 EV_FREQUENT_CHECK;
2708 4208
2709 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4209 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2710} 4210}
2711 4211
2712void noinline 4212ecb_noinline
4213void
2713ev_periodic_stop (EV_P_ ev_periodic *w) 4214ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
2714{ 4215{
2715 clear_pending (EV_A_ (W)w); 4216 clear_pending (EV_A_ (W)w);
2716 if (expect_false (!ev_is_active (w))) 4217 if (ecb_expect_false (!ev_is_active (w)))
2717 return; 4218 return;
2718 4219
2719 EV_FREQUENT_CHECK; 4220 EV_FREQUENT_CHECK;
2720 4221
2721 { 4222 {
… …
2723 4224
2724 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 4225 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2725 4226
2726 --periodiccnt; 4227 --periodiccnt;
2727 4228
2728 if (expect_true (active < periodiccnt + HEAP0)) 4229 if (ecb_expect_true (active < periodiccnt + HEAP0))
2729 { 4230 {
2730 periodics [active] = periodics [periodiccnt + HEAP0]; 4231 periodics [active] = periodics [periodiccnt + HEAP0];
2731 adjustheap (periodics, periodiccnt, active); 4232 adjustheap (periodics, periodiccnt, active);
2732 } 4233 }
2733 } 4234 }
… …
2735 ev_stop (EV_A_ (W)w); 4236 ev_stop (EV_A_ (W)w);
2736 4237
2737 EV_FREQUENT_CHECK; 4238 EV_FREQUENT_CHECK;
2738} 4239}
2739 4240
2740void noinline 4241ecb_noinline
4242void
2741ev_periodic_again (EV_P_ ev_periodic *w) 4243ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
2742{ 4244{
2743 /* TODO: use adjustheap and recalculation */ 4245 /* TODO: use adjustheap and recalculation */
2744 ev_periodic_stop (EV_A_ w); 4246 ev_periodic_stop (EV_A_ w);
2745 ev_periodic_start (EV_A_ w); 4247 ev_periodic_start (EV_A_ w);
2746} 4248}
… …
2750# define SA_RESTART 0 4252# define SA_RESTART 0
2751#endif 4253#endif
2752 4254
2753#if EV_SIGNAL_ENABLE 4255#if EV_SIGNAL_ENABLE
2754 4256
2755void noinline 4257ecb_noinline
4258void
2756ev_signal_start (EV_P_ ev_signal *w) 4259ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
2757{ 4260{
2758 if (expect_false (ev_is_active (w))) 4261 if (ecb_expect_false (ev_is_active (w)))
2759 return; 4262 return;
2760 4263
2761 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4264 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2762 4265
2763#if EV_MULTIPLICITY 4266#if EV_MULTIPLICITY
2764 assert (("libev: a signal must not be attached to two different loops", 4267 assert (("libev: a signal must not be attached to two different loops",
2765 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4268 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2766 4269
2767 signals [w->signum - 1].loop = EV_A; 4270 signals [w->signum - 1].loop = EV_A;
4271 ECB_MEMORY_FENCE_RELEASE;
2768#endif 4272#endif
2769 4273
2770 EV_FREQUENT_CHECK; 4274 EV_FREQUENT_CHECK;
2771 4275
2772#if EV_USE_SIGNALFD 4276#if EV_USE_SIGNALFD
… …
2819 sa.sa_handler = ev_sighandler; 4323 sa.sa_handler = ev_sighandler;
2820 sigfillset (&sa.sa_mask); 4324 sigfillset (&sa.sa_mask);
2821 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 4325 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2822 sigaction (w->signum, &sa, 0); 4326 sigaction (w->signum, &sa, 0);
2823 4327
4328 if (origflags & EVFLAG_NOSIGMASK)
4329 {
2824 sigemptyset (&sa.sa_mask); 4330 sigemptyset (&sa.sa_mask);
2825 sigaddset (&sa.sa_mask, w->signum); 4331 sigaddset (&sa.sa_mask, w->signum);
2826 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 4332 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
4333 }
2827#endif 4334#endif
2828 } 4335 }
2829 4336
2830 EV_FREQUENT_CHECK; 4337 EV_FREQUENT_CHECK;
2831} 4338}
2832 4339
2833void noinline 4340ecb_noinline
4341void
2834ev_signal_stop (EV_P_ ev_signal *w) 4342ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
2835{ 4343{
2836 clear_pending (EV_A_ (W)w); 4344 clear_pending (EV_A_ (W)w);
2837 if (expect_false (!ev_is_active (w))) 4345 if (ecb_expect_false (!ev_is_active (w)))
2838 return; 4346 return;
2839 4347
2840 EV_FREQUENT_CHECK; 4348 EV_FREQUENT_CHECK;
2841 4349
2842 wlist_del (&signals [w->signum - 1].head, (WL)w); 4350 wlist_del (&signals [w->signum - 1].head, (WL)w);
… …
2870#endif 4378#endif
2871 4379
2872#if EV_CHILD_ENABLE 4380#if EV_CHILD_ENABLE
2873 4381
2874void 4382void
2875ev_child_start (EV_P_ ev_child *w) 4383ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
2876{ 4384{
2877#if EV_MULTIPLICITY 4385#if EV_MULTIPLICITY
2878 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4386 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2879#endif 4387#endif
2880 if (expect_false (ev_is_active (w))) 4388 if (ecb_expect_false (ev_is_active (w)))
2881 return; 4389 return;
2882 4390
2883 EV_FREQUENT_CHECK; 4391 EV_FREQUENT_CHECK;
2884 4392
2885 ev_start (EV_A_ (W)w, 1); 4393 ev_start (EV_A_ (W)w, 1);
… …
2887 4395
2888 EV_FREQUENT_CHECK; 4396 EV_FREQUENT_CHECK;
2889} 4397}
2890 4398
2891void 4399void
2892ev_child_stop (EV_P_ ev_child *w) 4400ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
2893{ 4401{
2894 clear_pending (EV_A_ (W)w); 4402 clear_pending (EV_A_ (W)w);
2895 if (expect_false (!ev_is_active (w))) 4403 if (ecb_expect_false (!ev_is_active (w)))
2896 return; 4404 return;
2897 4405
2898 EV_FREQUENT_CHECK; 4406 EV_FREQUENT_CHECK;
2899 4407
2900 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w); 4408 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
… …
2914 4422
2915#define DEF_STAT_INTERVAL 5.0074891 4423#define DEF_STAT_INTERVAL 5.0074891
2916#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4424#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2917#define MIN_STAT_INTERVAL 0.1074891 4425#define MIN_STAT_INTERVAL 0.1074891
2918 4426
2919static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4427ecb_noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2920 4428
2921#if EV_USE_INOTIFY 4429#if EV_USE_INOTIFY
2922 4430
2923/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ 4431/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
2924# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4432# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2925 4433
2926static void noinline 4434ecb_noinline
4435static void
2927infy_add (EV_P_ ev_stat *w) 4436infy_add (EV_P_ ev_stat *w)
2928{ 4437{
2929 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); 4438 w->wd = inotify_add_watch (fs_fd, w->path,
4439 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4440 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4441 | IN_DONT_FOLLOW | IN_MASK_ADD);
2930 4442
2931 if (w->wd >= 0) 4443 if (w->wd >= 0)
2932 { 4444 {
2933 struct statfs sfs; 4445 struct statfs sfs;
2934 4446
… …
2938 4450
2939 if (!fs_2625) 4451 if (!fs_2625)
2940 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4452 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2941 else if (!statfs (w->path, &sfs) 4453 else if (!statfs (w->path, &sfs)
2942 && (sfs.f_type == 0x1373 /* devfs */ 4454 && (sfs.f_type == 0x1373 /* devfs */
4455 || sfs.f_type == 0x4006 /* fat */
4456 || sfs.f_type == 0x4d44 /* msdos */
2943 || sfs.f_type == 0xEF53 /* ext2/3 */ 4457 || sfs.f_type == 0xEF53 /* ext2/3 */
4458 || sfs.f_type == 0x72b6 /* jffs2 */
4459 || sfs.f_type == 0x858458f6 /* ramfs */
4460 || sfs.f_type == 0x5346544e /* ntfs */
2944 || sfs.f_type == 0x3153464a /* jfs */ 4461 || sfs.f_type == 0x3153464a /* jfs */
4462 || sfs.f_type == 0x9123683e /* btrfs */
2945 || sfs.f_type == 0x52654973 /* reiser3 */ 4463 || sfs.f_type == 0x52654973 /* reiser3 */
2946 || sfs.f_type == 0x01021994 /* tempfs */ 4464 || sfs.f_type == 0x01021994 /* tmpfs */
2947 || sfs.f_type == 0x58465342 /* xfs */)) 4465 || sfs.f_type == 0x58465342 /* xfs */))
2948 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4466 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
2949 else 4467 else
2950 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4468 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2951 } 4469 }
… …
2972 if (!pend || pend == path) 4490 if (!pend || pend == path)
2973 break; 4491 break;
2974 4492
2975 *pend = 0; 4493 *pend = 0;
2976 w->wd = inotify_add_watch (fs_fd, path, mask); 4494 w->wd = inotify_add_watch (fs_fd, path, mask);
2977 } 4495 }
2978 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 4496 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2979 } 4497 }
2980 } 4498 }
2981 4499
2982 if (w->wd >= 0) 4500 if (w->wd >= 0)
… …
2986 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4504 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2987 ev_timer_again (EV_A_ &w->timer); 4505 ev_timer_again (EV_A_ &w->timer);
2988 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4506 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2989} 4507}
2990 4508
2991static void noinline 4509ecb_noinline
4510static void
2992infy_del (EV_P_ ev_stat *w) 4511infy_del (EV_P_ ev_stat *w)
2993{ 4512{
2994 int slot; 4513 int slot;
2995 int wd = w->wd; 4514 int wd = w->wd;
2996 4515
… …
3003 4522
3004 /* remove this watcher, if others are watching it, they will rearm */ 4523 /* remove this watcher, if others are watching it, they will rearm */
3005 inotify_rm_watch (fs_fd, wd); 4524 inotify_rm_watch (fs_fd, wd);
3006} 4525}
3007 4526
3008static void noinline 4527ecb_noinline
4528static void
3009infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4529infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
3010{ 4530{
3011 if (slot < 0) 4531 if (slot < 0)
3012 /* overflow, need to check for all hash slots */ 4532 /* overflow, need to check for all hash slots */
3013 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4533 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
3049 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4569 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3050 ofs += sizeof (struct inotify_event) + ev->len; 4570 ofs += sizeof (struct inotify_event) + ev->len;
3051 } 4571 }
3052} 4572}
3053 4573
3054inline_size unsigned int
3055ev_linux_version (void)
3056{
3057 struct utsname buf;
3058 unsigned int v;
3059 int i;
3060 char *p = buf.release;
3061
3062 if (uname (&buf))
3063 return 0;
3064
3065 for (i = 3+1; --i; )
3066 {
3067 unsigned int c = 0;
3068
3069 for (;;)
3070 {
3071 if (*p >= '0' && *p <= '9')
3072 c = c * 10 + *p++ - '0';
3073 else
3074 {
3075 p += *p == '.';
3076 break;
3077 }
3078 }
3079
3080 v = (v << 8) | c;
3081 }
3082
3083 return v;
3084}
3085
3086inline_size void 4574inline_size ecb_cold
4575void
3087ev_check_2625 (EV_P) 4576ev_check_2625 (EV_P)
3088{ 4577{
3089 /* kernels < 2.6.25 are borked 4578 /* kernels < 2.6.25 are borked
3090 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4579 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3091 */ 4580 */
… …
3096} 4585}
3097 4586
3098inline_size int 4587inline_size int
3099infy_newfd (void) 4588infy_newfd (void)
3100{ 4589{
3101#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4590#if defined IN_CLOEXEC && defined IN_NONBLOCK
3102 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4591 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3103 if (fd >= 0) 4592 if (fd >= 0)
3104 return fd; 4593 return fd;
3105#endif 4594#endif
3106 return inotify_init (); 4595 return inotify_init ();
… …
3181#else 4670#else
3182# define EV_LSTAT(p,b) lstat (p, b) 4671# define EV_LSTAT(p,b) lstat (p, b)
3183#endif 4672#endif
3184 4673
3185void 4674void
3186ev_stat_stat (EV_P_ ev_stat *w) 4675ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
3187{ 4676{
3188 if (lstat (w->path, &w->attr) < 0) 4677 if (lstat (w->path, &w->attr) < 0)
3189 w->attr.st_nlink = 0; 4678 w->attr.st_nlink = 0;
3190 else if (!w->attr.st_nlink) 4679 else if (!w->attr.st_nlink)
3191 w->attr.st_nlink = 1; 4680 w->attr.st_nlink = 1;
3192} 4681}
3193 4682
3194static void noinline 4683ecb_noinline
4684static void
3195stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4685stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3196{ 4686{
3197 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4687 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3198 4688
3199 ev_statdata prev = w->attr; 4689 ev_statdata prev = w->attr;
… …
3230 ev_feed_event (EV_A_ w, EV_STAT); 4720 ev_feed_event (EV_A_ w, EV_STAT);
3231 } 4721 }
3232} 4722}
3233 4723
3234void 4724void
3235ev_stat_start (EV_P_ ev_stat *w) 4725ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
3236{ 4726{
3237 if (expect_false (ev_is_active (w))) 4727 if (ecb_expect_false (ev_is_active (w)))
3238 return; 4728 return;
3239 4729
3240 ev_stat_stat (EV_A_ w); 4730 ev_stat_stat (EV_A_ w);
3241 4731
3242 if (w->interval < MIN_STAT_INTERVAL && w->interval) 4732 if (w->interval < MIN_STAT_INTERVAL && w->interval)
… …
3261 4751
3262 EV_FREQUENT_CHECK; 4752 EV_FREQUENT_CHECK;
3263} 4753}
3264 4754
3265void 4755void
3266ev_stat_stop (EV_P_ ev_stat *w) 4756ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
3267{ 4757{
3268 clear_pending (EV_A_ (W)w); 4758 clear_pending (EV_A_ (W)w);
3269 if (expect_false (!ev_is_active (w))) 4759 if (ecb_expect_false (!ev_is_active (w)))
3270 return; 4760 return;
3271 4761
3272 EV_FREQUENT_CHECK; 4762 EV_FREQUENT_CHECK;
3273 4763
3274#if EV_USE_INOTIFY 4764#if EV_USE_INOTIFY
… …
3287} 4777}
3288#endif 4778#endif
3289 4779
3290#if EV_IDLE_ENABLE 4780#if EV_IDLE_ENABLE
3291void 4781void
3292ev_idle_start (EV_P_ ev_idle *w) 4782ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
3293{ 4783{
3294 if (expect_false (ev_is_active (w))) 4784 if (ecb_expect_false (ev_is_active (w)))
3295 return; 4785 return;
3296 4786
3297 pri_adjust (EV_A_ (W)w); 4787 pri_adjust (EV_A_ (W)w);
3298 4788
3299 EV_FREQUENT_CHECK; 4789 EV_FREQUENT_CHECK;
… …
3302 int active = ++idlecnt [ABSPRI (w)]; 4792 int active = ++idlecnt [ABSPRI (w)];
3303 4793
3304 ++idleall; 4794 ++idleall;
3305 ev_start (EV_A_ (W)w, active); 4795 ev_start (EV_A_ (W)w, active);
3306 4796
3307 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 4797 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
3308 idles [ABSPRI (w)][active - 1] = w; 4798 idles [ABSPRI (w)][active - 1] = w;
3309 } 4799 }
3310 4800
3311 EV_FREQUENT_CHECK; 4801 EV_FREQUENT_CHECK;
3312} 4802}
3313 4803
3314void 4804void
3315ev_idle_stop (EV_P_ ev_idle *w) 4805ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
3316{ 4806{
3317 clear_pending (EV_A_ (W)w); 4807 clear_pending (EV_A_ (W)w);
3318 if (expect_false (!ev_is_active (w))) 4808 if (ecb_expect_false (!ev_is_active (w)))
3319 return; 4809 return;
3320 4810
3321 EV_FREQUENT_CHECK; 4811 EV_FREQUENT_CHECK;
3322 4812
3323 { 4813 {
… …
3334} 4824}
3335#endif 4825#endif
3336 4826
3337#if EV_PREPARE_ENABLE 4827#if EV_PREPARE_ENABLE
3338void 4828void
3339ev_prepare_start (EV_P_ ev_prepare *w) 4829ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
3340{ 4830{
3341 if (expect_false (ev_is_active (w))) 4831 if (ecb_expect_false (ev_is_active (w)))
3342 return; 4832 return;
3343 4833
3344 EV_FREQUENT_CHECK; 4834 EV_FREQUENT_CHECK;
3345 4835
3346 ev_start (EV_A_ (W)w, ++preparecnt); 4836 ev_start (EV_A_ (W)w, ++preparecnt);
3347 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4837 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
3348 prepares [preparecnt - 1] = w; 4838 prepares [preparecnt - 1] = w;
3349 4839
3350 EV_FREQUENT_CHECK; 4840 EV_FREQUENT_CHECK;
3351} 4841}
3352 4842
3353void 4843void
3354ev_prepare_stop (EV_P_ ev_prepare *w) 4844ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
3355{ 4845{
3356 clear_pending (EV_A_ (W)w); 4846 clear_pending (EV_A_ (W)w);
3357 if (expect_false (!ev_is_active (w))) 4847 if (ecb_expect_false (!ev_is_active (w)))
3358 return; 4848 return;
3359 4849
3360 EV_FREQUENT_CHECK; 4850 EV_FREQUENT_CHECK;
3361 4851
3362 { 4852 {
… …
3372} 4862}
3373#endif 4863#endif
3374 4864
3375#if EV_CHECK_ENABLE 4865#if EV_CHECK_ENABLE
3376void 4866void
3377ev_check_start (EV_P_ ev_check *w) 4867ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
3378{ 4868{
3379 if (expect_false (ev_is_active (w))) 4869 if (ecb_expect_false (ev_is_active (w)))
3380 return; 4870 return;
3381 4871
3382 EV_FREQUENT_CHECK; 4872 EV_FREQUENT_CHECK;
3383 4873
3384 ev_start (EV_A_ (W)w, ++checkcnt); 4874 ev_start (EV_A_ (W)w, ++checkcnt);
3385 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 4875 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
3386 checks [checkcnt - 1] = w; 4876 checks [checkcnt - 1] = w;
3387 4877
3388 EV_FREQUENT_CHECK; 4878 EV_FREQUENT_CHECK;
3389} 4879}
3390 4880
3391void 4881void
3392ev_check_stop (EV_P_ ev_check *w) 4882ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
3393{ 4883{
3394 clear_pending (EV_A_ (W)w); 4884 clear_pending (EV_A_ (W)w);
3395 if (expect_false (!ev_is_active (w))) 4885 if (ecb_expect_false (!ev_is_active (w)))
3396 return; 4886 return;
3397 4887
3398 EV_FREQUENT_CHECK; 4888 EV_FREQUENT_CHECK;
3399 4889
3400 { 4890 {
… …
3409 EV_FREQUENT_CHECK; 4899 EV_FREQUENT_CHECK;
3410} 4900}
3411#endif 4901#endif
3412 4902
3413#if EV_EMBED_ENABLE 4903#if EV_EMBED_ENABLE
3414void noinline 4904ecb_noinline
4905void
3415ev_embed_sweep (EV_P_ ev_embed *w) 4906ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
3416{ 4907{
3417 ev_loop (w->other, EVLOOP_NONBLOCK); 4908 ev_run (w->other, EVRUN_NOWAIT);
3418} 4909}
3419 4910
3420static void 4911static void
3421embed_io_cb (EV_P_ ev_io *io, int revents) 4912embed_io_cb (EV_P_ ev_io *io, int revents)
3422{ 4913{
3423 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4914 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3424 4915
3425 if (ev_cb (w)) 4916 if (ev_cb (w))
3426 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4917 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3427 else 4918 else
3428 ev_loop (w->other, EVLOOP_NONBLOCK); 4919 ev_run (w->other, EVRUN_NOWAIT);
3429} 4920}
3430 4921
3431static void 4922static void
3432embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4923embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3433{ 4924{
… …
3437 EV_P = w->other; 4928 EV_P = w->other;
3438 4929
3439 while (fdchangecnt) 4930 while (fdchangecnt)
3440 { 4931 {
3441 fd_reify (EV_A); 4932 fd_reify (EV_A);
3442 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4933 ev_run (EV_A_ EVRUN_NOWAIT);
3443 } 4934 }
3444 } 4935 }
3445} 4936}
3446 4937
3447static void 4938static void
… …
3453 4944
3454 { 4945 {
3455 EV_P = w->other; 4946 EV_P = w->other;
3456 4947
3457 ev_loop_fork (EV_A); 4948 ev_loop_fork (EV_A);
3458 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4949 ev_run (EV_A_ EVRUN_NOWAIT);
3459 } 4950 }
3460 4951
3461 ev_embed_start (EV_A_ w); 4952 ev_embed_start (EV_A_ w);
3462} 4953}
3463 4954
… …
3468 ev_idle_stop (EV_A_ idle); 4959 ev_idle_stop (EV_A_ idle);
3469} 4960}
3470#endif 4961#endif
3471 4962
3472void 4963void
3473ev_embed_start (EV_P_ ev_embed *w) 4964ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
3474{ 4965{
3475 if (expect_false (ev_is_active (w))) 4966 if (ecb_expect_false (ev_is_active (w)))
3476 return; 4967 return;
3477 4968
3478 { 4969 {
3479 EV_P = w->other; 4970 EV_P = w->other;
3480 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4971 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
… …
3499 4990
3500 EV_FREQUENT_CHECK; 4991 EV_FREQUENT_CHECK;
3501} 4992}
3502 4993
3503void 4994void
3504ev_embed_stop (EV_P_ ev_embed *w) 4995ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
3505{ 4996{
3506 clear_pending (EV_A_ (W)w); 4997 clear_pending (EV_A_ (W)w);
3507 if (expect_false (!ev_is_active (w))) 4998 if (ecb_expect_false (!ev_is_active (w)))
3508 return; 4999 return;
3509 5000
3510 EV_FREQUENT_CHECK; 5001 EV_FREQUENT_CHECK;
3511 5002
3512 ev_io_stop (EV_A_ &w->io); 5003 ev_io_stop (EV_A_ &w->io);
… …
3519} 5010}
3520#endif 5011#endif
3521 5012
3522#if EV_FORK_ENABLE 5013#if EV_FORK_ENABLE
3523void 5014void
3524ev_fork_start (EV_P_ ev_fork *w) 5015ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
3525{ 5016{
3526 if (expect_false (ev_is_active (w))) 5017 if (ecb_expect_false (ev_is_active (w)))
3527 return; 5018 return;
3528 5019
3529 EV_FREQUENT_CHECK; 5020 EV_FREQUENT_CHECK;
3530 5021
3531 ev_start (EV_A_ (W)w, ++forkcnt); 5022 ev_start (EV_A_ (W)w, ++forkcnt);
3532 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 5023 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
3533 forks [forkcnt - 1] = w; 5024 forks [forkcnt - 1] = w;
3534 5025
3535 EV_FREQUENT_CHECK; 5026 EV_FREQUENT_CHECK;
3536} 5027}
3537 5028
3538void 5029void
3539ev_fork_stop (EV_P_ ev_fork *w) 5030ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
3540{ 5031{
3541 clear_pending (EV_A_ (W)w); 5032 clear_pending (EV_A_ (W)w);
3542 if (expect_false (!ev_is_active (w))) 5033 if (ecb_expect_false (!ev_is_active (w)))
3543 return; 5034 return;
3544 5035
3545 EV_FREQUENT_CHECK; 5036 EV_FREQUENT_CHECK;
3546 5037
3547 { 5038 {
… …
3555 5046
3556 EV_FREQUENT_CHECK; 5047 EV_FREQUENT_CHECK;
3557} 5048}
3558#endif 5049#endif
3559 5050
5051#if EV_CLEANUP_ENABLE
5052void
5053ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
5054{
5055 if (ecb_expect_false (ev_is_active (w)))
5056 return;
5057
5058 EV_FREQUENT_CHECK;
5059
5060 ev_start (EV_A_ (W)w, ++cleanupcnt);
5061 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
5062 cleanups [cleanupcnt - 1] = w;
5063
5064 /* cleanup watchers should never keep a refcount on the loop */
5065 ev_unref (EV_A);
5066 EV_FREQUENT_CHECK;
5067}
5068
5069void
5070ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
5071{
5072 clear_pending (EV_A_ (W)w);
5073 if (ecb_expect_false (!ev_is_active (w)))
5074 return;
5075
5076 EV_FREQUENT_CHECK;
5077 ev_ref (EV_A);
5078
5079 {
5080 int active = ev_active (w);
5081
5082 cleanups [active - 1] = cleanups [--cleanupcnt];
5083 ev_active (cleanups [active - 1]) = active;
5084 }
5085
5086 ev_stop (EV_A_ (W)w);
5087
5088 EV_FREQUENT_CHECK;
5089}
5090#endif
5091
3560#if EV_ASYNC_ENABLE 5092#if EV_ASYNC_ENABLE
3561void 5093void
3562ev_async_start (EV_P_ ev_async *w) 5094ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
3563{ 5095{
3564 if (expect_false (ev_is_active (w))) 5096 if (ecb_expect_false (ev_is_active (w)))
3565 return; 5097 return;
3566 5098
5099 w->sent = 0;
5100
3567 evpipe_init (EV_A); 5101 evpipe_init (EV_A);
3568 5102
3569 EV_FREQUENT_CHECK; 5103 EV_FREQUENT_CHECK;
3570 5104
3571 ev_start (EV_A_ (W)w, ++asynccnt); 5105 ev_start (EV_A_ (W)w, ++asynccnt);
3572 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 5106 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
3573 asyncs [asynccnt - 1] = w; 5107 asyncs [asynccnt - 1] = w;
3574 5108
3575 EV_FREQUENT_CHECK; 5109 EV_FREQUENT_CHECK;
3576} 5110}
3577 5111
3578void 5112void
3579ev_async_stop (EV_P_ ev_async *w) 5113ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
3580{ 5114{
3581 clear_pending (EV_A_ (W)w); 5115 clear_pending (EV_A_ (W)w);
3582 if (expect_false (!ev_is_active (w))) 5116 if (ecb_expect_false (!ev_is_active (w)))
3583 return; 5117 return;
3584 5118
3585 EV_FREQUENT_CHECK; 5119 EV_FREQUENT_CHECK;
3586 5120
3587 { 5121 {
… …
3595 5129
3596 EV_FREQUENT_CHECK; 5130 EV_FREQUENT_CHECK;
3597} 5131}
3598 5132
3599void 5133void
3600ev_async_send (EV_P_ ev_async *w) 5134ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
3601{ 5135{
3602 w->sent = 1; 5136 w->sent = 1;
3603 evpipe_write (EV_A_ &async_pending); 5137 evpipe_write (EV_A_ &async_pending);
3604} 5138}
3605#endif 5139#endif
… …
3642 5176
3643 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5177 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3644} 5178}
3645 5179
3646void 5180void
3647ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 5181ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
3648{ 5182{
3649 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5183 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3650
3651 if (expect_false (!once))
3652 {
3653 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3654 return;
3655 }
3656 5184
3657 once->cb = cb; 5185 once->cb = cb;
3658 once->arg = arg; 5186 once->arg = arg;
3659 5187
3660 ev_init (&once->io, once_cb_io); 5188 ev_init (&once->io, once_cb_io);
… …
3673} 5201}
3674 5202
3675/*****************************************************************************/ 5203/*****************************************************************************/
3676 5204
3677#if EV_WALK_ENABLE 5205#if EV_WALK_ENABLE
5206ecb_cold
3678void 5207void
3679ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 5208ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
3680{ 5209{
3681 int i, j; 5210 int i, j;
3682 ev_watcher_list *wl, *wn; 5211 ev_watcher_list *wl, *wn;
3683 5212
3684 if (types & (EV_IO | EV_EMBED)) 5213 if (types & (EV_IO | EV_EMBED))
… …
3727 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 5256 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3728#endif 5257#endif
3729 5258
3730#if EV_IDLE_ENABLE 5259#if EV_IDLE_ENABLE
3731 if (types & EV_IDLE) 5260 if (types & EV_IDLE)
3732 for (j = NUMPRI; i--; ) 5261 for (j = NUMPRI; j--; )
3733 for (i = idlecnt [j]; i--; ) 5262 for (i = idlecnt [j]; i--; )
3734 cb (EV_A_ EV_IDLE, idles [j][i]); 5263 cb (EV_A_ EV_IDLE, idles [j][i]);
3735#endif 5264#endif
3736 5265
3737#if EV_FORK_ENABLE 5266#if EV_FORK_ENABLE
… …
3790 5319
3791#if EV_MULTIPLICITY 5320#if EV_MULTIPLICITY
3792 #include "ev_wrap.h" 5321 #include "ev_wrap.h"
3793#endif 5322#endif
3794 5323
3795#ifdef __cplusplus
3796}
3797#endif
3798

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