ViewVC Help
View File | Revision Log | Show Annotations | Download File
/cvs/libev/ev.c
(Generate patch)

Comparing libev/ev.c (file contents):
Revision 1.371 by root, Mon Feb 7 21:45:32 2011 UTC vs.
Revision 1.500 by root, Mon Jul 1 20:47:37 2019 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009,2010,2011 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007-2019 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
10 * 1. Redistributions of source code must retain the above copyright notice, 10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer. 11 * this list of conditions and the following disclaimer.
12 * 12 *
13 * 2. Redistributions in binary form must reproduce the above copyright 13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the 14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution. 15 * documentation and/or other materials provided with the distribution.
16 * 16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- 18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO 19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- 20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
… …
43# include EV_CONFIG_H 43# include EV_CONFIG_H
44# else 44# else
45# include "config.h" 45# include "config.h"
46# endif 46# endif
47 47
48# if HAVE_FLOOR
49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1
51# endif
52# endif
53
48# if HAVE_CLOCK_SYSCALL 54# if HAVE_CLOCK_SYSCALL
49# ifndef EV_USE_CLOCK_SYSCALL 55# ifndef EV_USE_CLOCK_SYSCALL
50# define EV_USE_CLOCK_SYSCALL 1 56# define EV_USE_CLOCK_SYSCALL 1
51# ifndef EV_USE_REALTIME 57# ifndef EV_USE_REALTIME
52# define EV_USE_REALTIME 0 58# define EV_USE_REALTIME 0
53# endif 59# endif
54# ifndef EV_USE_MONOTONIC 60# ifndef EV_USE_MONOTONIC
55# define EV_USE_MONOTONIC 1 61# define EV_USE_MONOTONIC 1
56# endif 62# endif
57# endif 63# endif
58# elif !defined(EV_USE_CLOCK_SYSCALL) 64# elif !defined EV_USE_CLOCK_SYSCALL
59# define EV_USE_CLOCK_SYSCALL 0 65# define EV_USE_CLOCK_SYSCALL 0
60# endif 66# endif
61 67
62# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
63# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
… …
107# define EV_USE_EPOLL EV_FEATURE_BACKENDS 113# define EV_USE_EPOLL EV_FEATURE_BACKENDS
108# endif 114# endif
109# else 115# else
110# undef EV_USE_EPOLL 116# undef EV_USE_EPOLL
111# define EV_USE_EPOLL 0 117# define EV_USE_EPOLL 0
118# endif
119
120# if HAVE_LINUX_AIO_ABI_H
121# ifndef EV_USE_LINUXAIO
122# define EV_USE_LINUXAIO EV_FEATURE_BACKENDS
123# endif
124# else
125# undef EV_USE_LINUXAIO
126# define EV_USE_LINUXAIO 0
112# endif 127# endif
113 128
114# if HAVE_KQUEUE && HAVE_SYS_EVENT_H 129# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
115# ifndef EV_USE_KQUEUE 130# ifndef EV_USE_KQUEUE
116# define EV_USE_KQUEUE EV_FEATURE_BACKENDS 131# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
… …
156# define EV_USE_EVENTFD 0 171# define EV_USE_EVENTFD 0
157# endif 172# endif
158 173
159#endif 174#endif
160 175
161#include <math.h> 176/* OS X, in its infinite idiocy, actually HARDCODES
177 * a limit of 1024 into their select. Where people have brains,
178 * OS X engineers apparently have a vacuum. Or maybe they were
179 * ordered to have a vacuum, or they do anything for money.
180 * This might help. Or not.
181 * Note that this must be defined early, as other include files
182 * will rely on this define as well.
183 */
184#define _DARWIN_UNLIMITED_SELECT 1
185
162#include <stdlib.h> 186#include <stdlib.h>
163#include <string.h> 187#include <string.h>
164#include <fcntl.h> 188#include <fcntl.h>
165#include <stddef.h> 189#include <stddef.h>
166 190
… …
178# include EV_H 202# include EV_H
179#else 203#else
180# include "ev.h" 204# include "ev.h"
181#endif 205#endif
182 206
183EV_CPP(extern "C" {) 207#if EV_NO_THREADS
208# undef EV_NO_SMP
209# define EV_NO_SMP 1
210# undef ECB_NO_THREADS
211# define ECB_NO_THREADS 1
212#endif
213#if EV_NO_SMP
214# undef EV_NO_SMP
215# define ECB_NO_SMP 1
216#endif
184 217
185#ifndef _WIN32 218#ifndef _WIN32
186# include <sys/time.h> 219# include <sys/time.h>
187# include <sys/wait.h> 220# include <sys/wait.h>
188# include <unistd.h> 221# include <unistd.h>
189#else 222#else
190# include <io.h> 223# include <io.h>
191# define WIN32_LEAN_AND_MEAN 224# define WIN32_LEAN_AND_MEAN
225# include <winsock2.h>
192# include <windows.h> 226# include <windows.h>
193# ifndef EV_SELECT_IS_WINSOCKET 227# ifndef EV_SELECT_IS_WINSOCKET
194# define EV_SELECT_IS_WINSOCKET 1 228# define EV_SELECT_IS_WINSOCKET 1
195# endif 229# endif
196# undef EV_AVOID_STDIO 230# undef EV_AVOID_STDIO
197#endif 231#endif
198 232
199/* OS X, in its infinite idiocy, actually HARDCODES
200 * a limit of 1024 into their select. Where people have brains,
201 * OS X engineers apparently have a vacuum. Or maybe they were
202 * ordered to have a vacuum, or they do anything for money.
203 * This might help. Or not.
204 */
205#define _DARWIN_UNLIMITED_SELECT 1
206
207/* this block tries to deduce configuration from header-defined symbols and defaults */ 233/* this block tries to deduce configuration from header-defined symbols and defaults */
208 234
209/* try to deduce the maximum number of signals on this platform */ 235/* try to deduce the maximum number of signals on this platform */
210#if defined (EV_NSIG) 236#if defined EV_NSIG
211/* use what's provided */ 237/* use what's provided */
212#elif defined (NSIG) 238#elif defined NSIG
213# define EV_NSIG (NSIG) 239# define EV_NSIG (NSIG)
214#elif defined(_NSIG) 240#elif defined _NSIG
215# define EV_NSIG (_NSIG) 241# define EV_NSIG (_NSIG)
216#elif defined (SIGMAX) 242#elif defined SIGMAX
217# define EV_NSIG (SIGMAX+1) 243# define EV_NSIG (SIGMAX+1)
218#elif defined (SIG_MAX) 244#elif defined SIG_MAX
219# define EV_NSIG (SIG_MAX+1) 245# define EV_NSIG (SIG_MAX+1)
220#elif defined (_SIG_MAX) 246#elif defined _SIG_MAX
221# define EV_NSIG (_SIG_MAX+1) 247# define EV_NSIG (_SIG_MAX+1)
222#elif defined (MAXSIG) 248#elif defined MAXSIG
223# define EV_NSIG (MAXSIG+1) 249# define EV_NSIG (MAXSIG+1)
224#elif defined (MAX_SIG) 250#elif defined MAX_SIG
225# define EV_NSIG (MAX_SIG+1) 251# define EV_NSIG (MAX_SIG+1)
226#elif defined (SIGARRAYSIZE) 252#elif defined SIGARRAYSIZE
227# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ 253# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
228#elif defined (_sys_nsig) 254#elif defined _sys_nsig
229# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 255# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
230#else 256#else
231# error "unable to find value for NSIG, please report" 257# define EV_NSIG (8 * sizeof (sigset_t) + 1)
232/* to make it compile regardless, just remove the above line, */ 258#endif
233/* but consider reporting it, too! :) */ 259
234# define EV_NSIG 65 260#ifndef EV_USE_FLOOR
261# define EV_USE_FLOOR 0
235#endif 262#endif
236 263
237#ifndef EV_USE_CLOCK_SYSCALL 264#ifndef EV_USE_CLOCK_SYSCALL
238# if __linux && __GLIBC__ >= 2 265# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
239# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS 266# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
240# else 267# else
241# define EV_USE_CLOCK_SYSCALL 0 268# define EV_USE_CLOCK_SYSCALL 0
242# endif 269# endif
243#endif 270#endif
244 271
272#if !(_POSIX_TIMERS > 0)
273# ifndef EV_USE_MONOTONIC
274# define EV_USE_MONOTONIC 0
275# endif
276# ifndef EV_USE_REALTIME
277# define EV_USE_REALTIME 0
278# endif
279#endif
280
245#ifndef EV_USE_MONOTONIC 281#ifndef EV_USE_MONOTONIC
246# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 282# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
247# define EV_USE_MONOTONIC EV_FEATURE_OS 283# define EV_USE_MONOTONIC EV_FEATURE_OS
248# else 284# else
249# define EV_USE_MONOTONIC 0 285# define EV_USE_MONOTONIC 0
250# endif 286# endif
251#endif 287#endif
… …
288 324
289#ifndef EV_USE_PORT 325#ifndef EV_USE_PORT
290# define EV_USE_PORT 0 326# define EV_USE_PORT 0
291#endif 327#endif
292 328
329#ifndef EV_USE_LINUXAIO
330# if __linux /* libev currently assumes linux/aio_abi.h is always available on linux */
331# define EV_USE_LINUXAIO 1
332# else
333# define EV_USE_LINUXAIO 0
334# endif
335#endif
336
293#ifndef EV_USE_INOTIFY 337#ifndef EV_USE_INOTIFY
294# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 338# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
295# define EV_USE_INOTIFY EV_FEATURE_OS 339# define EV_USE_INOTIFY EV_FEATURE_OS
296# else 340# else
297# define EV_USE_INOTIFY 0 341# define EV_USE_INOTIFY 0
… …
338 382
339#ifndef EV_HEAP_CACHE_AT 383#ifndef EV_HEAP_CACHE_AT
340# define EV_HEAP_CACHE_AT EV_FEATURE_DATA 384# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
341#endif 385#endif
342 386
387#ifdef __ANDROID__
388/* supposedly, android doesn't typedef fd_mask */
389# undef EV_USE_SELECT
390# define EV_USE_SELECT 0
391/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
392# undef EV_USE_CLOCK_SYSCALL
393# define EV_USE_CLOCK_SYSCALL 0
394#endif
395
396/* aix's poll.h seems to cause lots of trouble */
397#ifdef _AIX
398/* AIX has a completely broken poll.h header */
399# undef EV_USE_POLL
400# define EV_USE_POLL 0
401#endif
402
343/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 403/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
344/* which makes programs even slower. might work on other unices, too. */ 404/* which makes programs even slower. might work on other unices, too. */
345#if EV_USE_CLOCK_SYSCALL 405#if EV_USE_CLOCK_SYSCALL
346# include <syscall.h> 406# include <sys/syscall.h>
347# ifdef SYS_clock_gettime 407# ifdef SYS_clock_gettime
348# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 408# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
349# undef EV_USE_MONOTONIC 409# undef EV_USE_MONOTONIC
350# define EV_USE_MONOTONIC 1 410# define EV_USE_MONOTONIC 1
351# else 411# else
… …
354# endif 414# endif
355#endif 415#endif
356 416
357/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 417/* this block fixes any misconfiguration where we know we run into trouble otherwise */
358 418
359#ifdef _AIX
360/* AIX has a completely broken poll.h header */
361# undef EV_USE_POLL
362# define EV_USE_POLL 0
363#endif
364
365#ifndef CLOCK_MONOTONIC 419#ifndef CLOCK_MONOTONIC
366# undef EV_USE_MONOTONIC 420# undef EV_USE_MONOTONIC
367# define EV_USE_MONOTONIC 0 421# define EV_USE_MONOTONIC 0
368#endif 422#endif
369 423
… …
377# define EV_USE_INOTIFY 0 431# define EV_USE_INOTIFY 0
378#endif 432#endif
379 433
380#if !EV_USE_NANOSLEEP 434#if !EV_USE_NANOSLEEP
381/* hp-ux has it in sys/time.h, which we unconditionally include above */ 435/* hp-ux has it in sys/time.h, which we unconditionally include above */
382# if !defined(_WIN32) && !defined(__hpux) 436# if !defined _WIN32 && !defined __hpux
383# include <sys/select.h> 437# include <sys/select.h>
438# endif
439#endif
440
441#if EV_USE_LINUXAIO
442# include <sys/syscall.h>
443# if !SYS_io_getevents || !EV_USE_EPOLL /* ev_linxaio uses ev_poll.c:ev_epoll_create */
444# undef EV_USE_LINUXAIO
445# define EV_USE_LINUXAIO 0
384# endif 446# endif
385#endif 447#endif
386 448
387#if EV_USE_INOTIFY 449#if EV_USE_INOTIFY
388# include <sys/statfs.h> 450# include <sys/statfs.h>
… …
390/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 452/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
391# ifndef IN_DONT_FOLLOW 453# ifndef IN_DONT_FOLLOW
392# undef EV_USE_INOTIFY 454# undef EV_USE_INOTIFY
393# define EV_USE_INOTIFY 0 455# define EV_USE_INOTIFY 0
394# endif 456# endif
395#endif
396
397#if EV_SELECT_IS_WINSOCKET
398# include <winsock.h>
399#endif 457#endif
400 458
401#if EV_USE_EVENTFD 459#if EV_USE_EVENTFD
402/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 460/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
403# include <stdint.h> 461# include <stdint.h>
… …
443#else 501#else
444# define EV_FREQUENT_CHECK do { } while (0) 502# define EV_FREQUENT_CHECK do { } while (0)
445#endif 503#endif
446 504
447/* 505/*
448 * This is used to avoid floating point rounding problems. 506 * This is used to work around floating point rounding problems.
449 * It is added to ev_rt_now when scheduling periodics
450 * to ensure progress, time-wise, even when rounding
451 * errors are against us.
452 * This value is good at least till the year 4000. 507 * This value is good at least till the year 4000.
453 * Better solutions welcome.
454 */ 508 */
455#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 509#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
510/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
456 511
457#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 512#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
458#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 513#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
459 514
460#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0) 515#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
461#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0) 516#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
462 517
518/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
519/* ECB.H BEGIN */
520/*
521 * libecb - http://software.schmorp.de/pkg/libecb
522 *
523 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
524 * Copyright (©) 2011 Emanuele Giaquinta
525 * All rights reserved.
526 *
527 * Redistribution and use in source and binary forms, with or without modifica-
528 * tion, are permitted provided that the following conditions are met:
529 *
530 * 1. Redistributions of source code must retain the above copyright notice,
531 * this list of conditions and the following disclaimer.
532 *
533 * 2. Redistributions in binary form must reproduce the above copyright
534 * notice, this list of conditions and the following disclaimer in the
535 * documentation and/or other materials provided with the distribution.
536 *
537 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
538 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
539 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
540 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
541 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
542 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
543 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
544 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
545 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
546 * OF THE POSSIBILITY OF SUCH DAMAGE.
547 *
548 * Alternatively, the contents of this file may be used under the terms of
549 * the GNU General Public License ("GPL") version 2 or any later version,
550 * in which case the provisions of the GPL are applicable instead of
551 * the above. If you wish to allow the use of your version of this file
552 * only under the terms of the GPL and not to allow others to use your
553 * version of this file under the BSD license, indicate your decision
554 * by deleting the provisions above and replace them with the notice
555 * and other provisions required by the GPL. If you do not delete the
556 * provisions above, a recipient may use your version of this file under
557 * either the BSD or the GPL.
558 */
559
560#ifndef ECB_H
561#define ECB_H
562
563/* 16 bits major, 16 bits minor */
564#define ECB_VERSION 0x00010006
565
566#ifdef _WIN32
567 typedef signed char int8_t;
568 typedef unsigned char uint8_t;
569 typedef signed short int16_t;
570 typedef unsigned short uint16_t;
571 typedef signed int int32_t;
572 typedef unsigned int uint32_t;
463#if __GNUC__ >= 4 573 #if __GNUC__
574 typedef signed long long int64_t;
575 typedef unsigned long long uint64_t;
576 #else /* _MSC_VER || __BORLANDC__ */
577 typedef signed __int64 int64_t;
578 typedef unsigned __int64 uint64_t;
579 #endif
580 #ifdef _WIN64
581 #define ECB_PTRSIZE 8
582 typedef uint64_t uintptr_t;
583 typedef int64_t intptr_t;
584 #else
585 #define ECB_PTRSIZE 4
586 typedef uint32_t uintptr_t;
587 typedef int32_t intptr_t;
588 #endif
589#else
590 #include <inttypes.h>
591 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
592 #define ECB_PTRSIZE 8
593 #else
594 #define ECB_PTRSIZE 4
595 #endif
596#endif
597
598#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
599#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
600
601/* work around x32 idiocy by defining proper macros */
602#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
603 #if _ILP32
604 #define ECB_AMD64_X32 1
605 #else
606 #define ECB_AMD64 1
607 #endif
608#endif
609
610/* many compilers define _GNUC_ to some versions but then only implement
611 * what their idiot authors think are the "more important" extensions,
612 * causing enormous grief in return for some better fake benchmark numbers.
613 * or so.
614 * we try to detect these and simply assume they are not gcc - if they have
615 * an issue with that they should have done it right in the first place.
616 */
617#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
618 #define ECB_GCC_VERSION(major,minor) 0
619#else
620 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
621#endif
622
623#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
624
625#if __clang__ && defined __has_builtin
626 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
627#else
628 #define ECB_CLANG_BUILTIN(x) 0
629#endif
630
631#if __clang__ && defined __has_extension
632 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
633#else
634 #define ECB_CLANG_EXTENSION(x) 0
635#endif
636
637#define ECB_CPP (__cplusplus+0)
638#define ECB_CPP11 (__cplusplus >= 201103L)
639#define ECB_CPP14 (__cplusplus >= 201402L)
640#define ECB_CPP17 (__cplusplus >= 201703L)
641
642#if ECB_CPP
643 #define ECB_C 0
644 #define ECB_STDC_VERSION 0
645#else
646 #define ECB_C 1
647 #define ECB_STDC_VERSION __STDC_VERSION__
648#endif
649
650#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
651#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
652#define ECB_C17 (ECB_STDC_VERSION >= 201710L)
653
654#if ECB_CPP
655 #define ECB_EXTERN_C extern "C"
656 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
657 #define ECB_EXTERN_C_END }
658#else
659 #define ECB_EXTERN_C extern
660 #define ECB_EXTERN_C_BEG
661 #define ECB_EXTERN_C_END
662#endif
663
664/*****************************************************************************/
665
666/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
667/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
668
669#if ECB_NO_THREADS
670 #define ECB_NO_SMP 1
671#endif
672
673#if ECB_NO_SMP
674 #define ECB_MEMORY_FENCE do { } while (0)
675#endif
676
677/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
678#if __xlC__ && ECB_CPP
679 #include <builtins.h>
680#endif
681
682#if 1400 <= _MSC_VER
683 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
684#endif
685
686#ifndef ECB_MEMORY_FENCE
687 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
688 #define ECB_MEMORY_FENCE_RELAXED __asm__ __volatile__ ("" : : : "memory")
689 #if __i386 || __i386__
690 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
691 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
692 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
693 #elif ECB_GCC_AMD64
694 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
695 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
696 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
697 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
698 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
699 #elif defined __ARM_ARCH_2__ \
700 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
701 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
702 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
703 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
704 || defined __ARM_ARCH_5TEJ__
705 /* should not need any, unless running old code on newer cpu - arm doesn't support that */
706 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
707 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
708 || defined __ARM_ARCH_6T2__
709 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
710 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
711 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
712 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
713 #elif __aarch64__
714 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
715 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
716 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
717 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
718 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
719 #elif defined __s390__ || defined __s390x__
720 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
721 #elif defined __mips__
722 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
723 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
724 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
725 #elif defined __alpha__
726 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
727 #elif defined __hppa__
728 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
729 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
730 #elif defined __ia64__
731 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
732 #elif defined __m68k__
733 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
734 #elif defined __m88k__
735 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
736 #elif defined __sh__
737 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
738 #endif
739 #endif
740#endif
741
742#ifndef ECB_MEMORY_FENCE
743 #if ECB_GCC_VERSION(4,7)
744 /* see comment below (stdatomic.h) about the C11 memory model. */
745 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
746 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
747 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
748 #define ECB_MEMORY_FENCE_RELAXED __atomic_thread_fence (__ATOMIC_RELAXED)
749
750 #elif ECB_CLANG_EXTENSION(c_atomic)
751 /* see comment below (stdatomic.h) about the C11 memory model. */
752 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
753 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
754 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
755 #define ECB_MEMORY_FENCE_RELAXED __c11_atomic_thread_fence (__ATOMIC_RELAXED)
756
757 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
758 #define ECB_MEMORY_FENCE __sync_synchronize ()
759 #elif _MSC_VER >= 1500 /* VC++ 2008 */
760 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
761 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
762 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
763 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
764 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
765 #elif _MSC_VER >= 1400 /* VC++ 2005 */
766 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
767 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
768 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
769 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
770 #elif defined _WIN32
771 #include <WinNT.h>
772 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
773 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
774 #include <mbarrier.h>
775 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
776 #define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier ()
777 #define ECB_MEMORY_FENCE_RELEASE __machine_rel_barrier ()
778 #define ECB_MEMORY_FENCE_RELAXED __compiler_barrier ()
779 #elif __xlC__
780 #define ECB_MEMORY_FENCE __sync ()
781 #endif
782#endif
783
784#ifndef ECB_MEMORY_FENCE
785 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
786 /* we assume that these memory fences work on all variables/all memory accesses, */
787 /* not just C11 atomics and atomic accesses */
788 #include <stdatomic.h>
789 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
790 #define ECB_MEMORY_FENCE_ACQUIRE atomic_thread_fence (memory_order_acquire)
791 #define ECB_MEMORY_FENCE_RELEASE atomic_thread_fence (memory_order_release)
792 #endif
793#endif
794
795#ifndef ECB_MEMORY_FENCE
796 #if !ECB_AVOID_PTHREADS
797 /*
798 * if you get undefined symbol references to pthread_mutex_lock,
799 * or failure to find pthread.h, then you should implement
800 * the ECB_MEMORY_FENCE operations for your cpu/compiler
801 * OR provide pthread.h and link against the posix thread library
802 * of your system.
803 */
804 #include <pthread.h>
805 #define ECB_NEEDS_PTHREADS 1
806 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
807
808 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
809 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
810 #endif
811#endif
812
813#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
814 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
815#endif
816
817#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
818 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
819#endif
820
821#if !defined ECB_MEMORY_FENCE_RELAXED && defined ECB_MEMORY_FENCE
822 #define ECB_MEMORY_FENCE_RELAXED ECB_MEMORY_FENCE /* very heavy-handed */
823#endif
824
825/*****************************************************************************/
826
827#if ECB_CPP
828 #define ecb_inline static inline
829#elif ECB_GCC_VERSION(2,5)
830 #define ecb_inline static __inline__
831#elif ECB_C99
832 #define ecb_inline static inline
833#else
834 #define ecb_inline static
835#endif
836
837#if ECB_GCC_VERSION(3,3)
838 #define ecb_restrict __restrict__
839#elif ECB_C99
840 #define ecb_restrict restrict
841#else
842 #define ecb_restrict
843#endif
844
845typedef int ecb_bool;
846
847#define ECB_CONCAT_(a, b) a ## b
848#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
849#define ECB_STRINGIFY_(a) # a
850#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
851#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
852
853#define ecb_function_ ecb_inline
854
855#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
856 #define ecb_attribute(attrlist) __attribute__ (attrlist)
857#else
858 #define ecb_attribute(attrlist)
859#endif
860
861#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
862 #define ecb_is_constant(expr) __builtin_constant_p (expr)
863#else
864 /* possible C11 impl for integral types
865 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
866 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
867
868 #define ecb_is_constant(expr) 0
869#endif
870
871#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
464# define expect(expr,value) __builtin_expect ((expr),(value)) 872 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
465# define noinline __attribute__ ((noinline))
466#else 873#else
467# define expect(expr,value) (expr) 874 #define ecb_expect(expr,value) (expr)
468# define noinline
469# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
470# define inline
471# endif 875#endif
472#endif
473 876
877#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
878 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
879#else
880 #define ecb_prefetch(addr,rw,locality)
881#endif
882
883/* no emulation for ecb_decltype */
884#if ECB_CPP11
885 // older implementations might have problems with decltype(x)::type, work around it
886 template<class T> struct ecb_decltype_t { typedef T type; };
887 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
888#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
889 #define ecb_decltype(x) __typeof__ (x)
890#endif
891
892#if _MSC_VER >= 1300
893 #define ecb_deprecated __declspec (deprecated)
894#else
895 #define ecb_deprecated ecb_attribute ((__deprecated__))
896#endif
897
898#if _MSC_VER >= 1500
899 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
900#elif ECB_GCC_VERSION(4,5)
901 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
902#else
903 #define ecb_deprecated_message(msg) ecb_deprecated
904#endif
905
906#if _MSC_VER >= 1400
907 #define ecb_noinline __declspec (noinline)
908#else
909 #define ecb_noinline ecb_attribute ((__noinline__))
910#endif
911
912#define ecb_unused ecb_attribute ((__unused__))
913#define ecb_const ecb_attribute ((__const__))
914#define ecb_pure ecb_attribute ((__pure__))
915
916#if ECB_C11 || __IBMC_NORETURN
917 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
918 #define ecb_noreturn _Noreturn
919#elif ECB_CPP11
920 #define ecb_noreturn [[noreturn]]
921#elif _MSC_VER >= 1200
922 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
923 #define ecb_noreturn __declspec (noreturn)
924#else
925 #define ecb_noreturn ecb_attribute ((__noreturn__))
926#endif
927
928#if ECB_GCC_VERSION(4,3)
929 #define ecb_artificial ecb_attribute ((__artificial__))
930 #define ecb_hot ecb_attribute ((__hot__))
931 #define ecb_cold ecb_attribute ((__cold__))
932#else
933 #define ecb_artificial
934 #define ecb_hot
935 #define ecb_cold
936#endif
937
938/* put around conditional expressions if you are very sure that the */
939/* expression is mostly true or mostly false. note that these return */
940/* booleans, not the expression. */
474#define expect_false(expr) expect ((expr) != 0, 0) 941#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
475#define expect_true(expr) expect ((expr) != 0, 1) 942#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
943/* for compatibility to the rest of the world */
944#define ecb_likely(expr) ecb_expect_true (expr)
945#define ecb_unlikely(expr) ecb_expect_false (expr)
946
947/* count trailing zero bits and count # of one bits */
948#if ECB_GCC_VERSION(3,4) \
949 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
950 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
951 && ECB_CLANG_BUILTIN(__builtin_popcount))
952 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
953 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
954 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
955 #define ecb_ctz32(x) __builtin_ctz (x)
956 #define ecb_ctz64(x) __builtin_ctzll (x)
957 #define ecb_popcount32(x) __builtin_popcount (x)
958 /* no popcountll */
959#else
960 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
961 ecb_function_ ecb_const int
962 ecb_ctz32 (uint32_t x)
963 {
964#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
965 unsigned long r;
966 _BitScanForward (&r, x);
967 return (int)r;
968#else
969 int r = 0;
970
971 x &= ~x + 1; /* this isolates the lowest bit */
972
973#if ECB_branchless_on_i386
974 r += !!(x & 0xaaaaaaaa) << 0;
975 r += !!(x & 0xcccccccc) << 1;
976 r += !!(x & 0xf0f0f0f0) << 2;
977 r += !!(x & 0xff00ff00) << 3;
978 r += !!(x & 0xffff0000) << 4;
979#else
980 if (x & 0xaaaaaaaa) r += 1;
981 if (x & 0xcccccccc) r += 2;
982 if (x & 0xf0f0f0f0) r += 4;
983 if (x & 0xff00ff00) r += 8;
984 if (x & 0xffff0000) r += 16;
985#endif
986
987 return r;
988#endif
989 }
990
991 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
992 ecb_function_ ecb_const int
993 ecb_ctz64 (uint64_t x)
994 {
995#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
996 unsigned long r;
997 _BitScanForward64 (&r, x);
998 return (int)r;
999#else
1000 int shift = x & 0xffffffff ? 0 : 32;
1001 return ecb_ctz32 (x >> shift) + shift;
1002#endif
1003 }
1004
1005 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
1006 ecb_function_ ecb_const int
1007 ecb_popcount32 (uint32_t x)
1008 {
1009 x -= (x >> 1) & 0x55555555;
1010 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
1011 x = ((x >> 4) + x) & 0x0f0f0f0f;
1012 x *= 0x01010101;
1013
1014 return x >> 24;
1015 }
1016
1017 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
1018 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
1019 {
1020#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1021 unsigned long r;
1022 _BitScanReverse (&r, x);
1023 return (int)r;
1024#else
1025 int r = 0;
1026
1027 if (x >> 16) { x >>= 16; r += 16; }
1028 if (x >> 8) { x >>= 8; r += 8; }
1029 if (x >> 4) { x >>= 4; r += 4; }
1030 if (x >> 2) { x >>= 2; r += 2; }
1031 if (x >> 1) { r += 1; }
1032
1033 return r;
1034#endif
1035 }
1036
1037 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
1038 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
1039 {
1040#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1041 unsigned long r;
1042 _BitScanReverse64 (&r, x);
1043 return (int)r;
1044#else
1045 int r = 0;
1046
1047 if (x >> 32) { x >>= 32; r += 32; }
1048
1049 return r + ecb_ld32 (x);
1050#endif
1051 }
1052#endif
1053
1054ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
1055ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
1056ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
1057ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
1058
1059ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
1060ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
1061{
1062 return ( (x * 0x0802U & 0x22110U)
1063 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
1064}
1065
1066ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
1067ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
1068{
1069 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
1070 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
1071 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
1072 x = ( x >> 8 ) | ( x << 8);
1073
1074 return x;
1075}
1076
1077ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
1078ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
1079{
1080 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
1081 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
1082 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
1083 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
1084 x = ( x >> 16 ) | ( x << 16);
1085
1086 return x;
1087}
1088
1089/* popcount64 is only available on 64 bit cpus as gcc builtin */
1090/* so for this version we are lazy */
1091ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
1092ecb_function_ ecb_const int
1093ecb_popcount64 (uint64_t x)
1094{
1095 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
1096}
1097
1098ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
1099ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
1100ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
1101ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
1102ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
1103ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
1104ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
1105ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
1106
1107ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
1108ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
1109ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
1110ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
1111ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
1112ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
1113ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
1114ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
1115
1116#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1117 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1118 #define ecb_bswap16(x) __builtin_bswap16 (x)
1119 #else
1120 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1121 #endif
1122 #define ecb_bswap32(x) __builtin_bswap32 (x)
1123 #define ecb_bswap64(x) __builtin_bswap64 (x)
1124#elif _MSC_VER
1125 #include <stdlib.h>
1126 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1127 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1128 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
1129#else
1130 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
1131 ecb_function_ ecb_const uint16_t
1132 ecb_bswap16 (uint16_t x)
1133 {
1134 return ecb_rotl16 (x, 8);
1135 }
1136
1137 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
1138 ecb_function_ ecb_const uint32_t
1139 ecb_bswap32 (uint32_t x)
1140 {
1141 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
1142 }
1143
1144 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
1145 ecb_function_ ecb_const uint64_t
1146 ecb_bswap64 (uint64_t x)
1147 {
1148 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
1149 }
1150#endif
1151
1152#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
1153 #define ecb_unreachable() __builtin_unreachable ()
1154#else
1155 /* this seems to work fine, but gcc always emits a warning for it :/ */
1156 ecb_inline ecb_noreturn void ecb_unreachable (void);
1157 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
1158#endif
1159
1160/* try to tell the compiler that some condition is definitely true */
1161#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
1162
1163ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
1164ecb_inline ecb_const uint32_t
1165ecb_byteorder_helper (void)
1166{
1167 /* the union code still generates code under pressure in gcc, */
1168 /* but less than using pointers, and always seems to */
1169 /* successfully return a constant. */
1170 /* the reason why we have this horrible preprocessor mess */
1171 /* is to avoid it in all cases, at least on common architectures */
1172 /* or when using a recent enough gcc version (>= 4.6) */
1173#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1174 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1175 #define ECB_LITTLE_ENDIAN 1
1176 return 0x44332211;
1177#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1178 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1179 #define ECB_BIG_ENDIAN 1
1180 return 0x11223344;
1181#else
1182 union
1183 {
1184 uint8_t c[4];
1185 uint32_t u;
1186 } u = { 0x11, 0x22, 0x33, 0x44 };
1187 return u.u;
1188#endif
1189}
1190
1191ecb_inline ecb_const ecb_bool ecb_big_endian (void);
1192ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
1193ecb_inline ecb_const ecb_bool ecb_little_endian (void);
1194ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
1195
1196#if ECB_GCC_VERSION(3,0) || ECB_C99
1197 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1198#else
1199 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1200#endif
1201
1202#if ECB_CPP
1203 template<typename T>
1204 static inline T ecb_div_rd (T val, T div)
1205 {
1206 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1207 }
1208 template<typename T>
1209 static inline T ecb_div_ru (T val, T div)
1210 {
1211 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1212 }
1213#else
1214 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1215 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1216#endif
1217
1218#if ecb_cplusplus_does_not_suck
1219 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1220 template<typename T, int N>
1221 static inline int ecb_array_length (const T (&arr)[N])
1222 {
1223 return N;
1224 }
1225#else
1226 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1227#endif
1228
1229ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1230ecb_function_ ecb_const uint32_t
1231ecb_binary16_to_binary32 (uint32_t x)
1232{
1233 unsigned int s = (x & 0x8000) << (31 - 15);
1234 int e = (x >> 10) & 0x001f;
1235 unsigned int m = x & 0x03ff;
1236
1237 if (ecb_expect_false (e == 31))
1238 /* infinity or NaN */
1239 e = 255 - (127 - 15);
1240 else if (ecb_expect_false (!e))
1241 {
1242 if (ecb_expect_true (!m))
1243 /* zero, handled by code below by forcing e to 0 */
1244 e = 0 - (127 - 15);
1245 else
1246 {
1247 /* subnormal, renormalise */
1248 unsigned int s = 10 - ecb_ld32 (m);
1249
1250 m = (m << s) & 0x3ff; /* mask implicit bit */
1251 e -= s - 1;
1252 }
1253 }
1254
1255 /* e and m now are normalised, or zero, (or inf or nan) */
1256 e += 127 - 15;
1257
1258 return s | (e << 23) | (m << (23 - 10));
1259}
1260
1261ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1262ecb_function_ ecb_const uint16_t
1263ecb_binary32_to_binary16 (uint32_t x)
1264{
1265 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1266 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1267 unsigned int m = x & 0x007fffff;
1268
1269 x &= 0x7fffffff;
1270
1271 /* if it's within range of binary16 normals, use fast path */
1272 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1273 {
1274 /* mantissa round-to-even */
1275 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1276
1277 /* handle overflow */
1278 if (ecb_expect_false (m >= 0x00800000))
1279 {
1280 m >>= 1;
1281 e += 1;
1282 }
1283
1284 return s | (e << 10) | (m >> (23 - 10));
1285 }
1286
1287 /* handle large numbers and infinity */
1288 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1289 return s | 0x7c00;
1290
1291 /* handle zero, subnormals and small numbers */
1292 if (ecb_expect_true (x < 0x38800000))
1293 {
1294 /* zero */
1295 if (ecb_expect_true (!x))
1296 return s;
1297
1298 /* handle subnormals */
1299
1300 /* too small, will be zero */
1301 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1302 return s;
1303
1304 m |= 0x00800000; /* make implicit bit explicit */
1305
1306 /* very tricky - we need to round to the nearest e (+10) bit value */
1307 {
1308 unsigned int bits = 14 - e;
1309 unsigned int half = (1 << (bits - 1)) - 1;
1310 unsigned int even = (m >> bits) & 1;
1311
1312 /* if this overflows, we will end up with a normalised number */
1313 m = (m + half + even) >> bits;
1314 }
1315
1316 return s | m;
1317 }
1318
1319 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1320 m >>= 13;
1321
1322 return s | 0x7c00 | m | !m;
1323}
1324
1325/*******************************************************************************/
1326/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1327
1328/* basically, everything uses "ieee pure-endian" floating point numbers */
1329/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1330#if 0 \
1331 || __i386 || __i386__ \
1332 || ECB_GCC_AMD64 \
1333 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1334 || defined __s390__ || defined __s390x__ \
1335 || defined __mips__ \
1336 || defined __alpha__ \
1337 || defined __hppa__ \
1338 || defined __ia64__ \
1339 || defined __m68k__ \
1340 || defined __m88k__ \
1341 || defined __sh__ \
1342 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1343 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1344 || defined __aarch64__
1345 #define ECB_STDFP 1
1346 #include <string.h> /* for memcpy */
1347#else
1348 #define ECB_STDFP 0
1349#endif
1350
1351#ifndef ECB_NO_LIBM
1352
1353 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1354
1355 /* only the oldest of old doesn't have this one. solaris. */
1356 #ifdef INFINITY
1357 #define ECB_INFINITY INFINITY
1358 #else
1359 #define ECB_INFINITY HUGE_VAL
1360 #endif
1361
1362 #ifdef NAN
1363 #define ECB_NAN NAN
1364 #else
1365 #define ECB_NAN ECB_INFINITY
1366 #endif
1367
1368 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1369 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1370 #define ecb_frexpf(x,e) frexpf ((x), (e))
1371 #else
1372 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1373 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1374 #endif
1375
1376 /* convert a float to ieee single/binary32 */
1377 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1378 ecb_function_ ecb_const uint32_t
1379 ecb_float_to_binary32 (float x)
1380 {
1381 uint32_t r;
1382
1383 #if ECB_STDFP
1384 memcpy (&r, &x, 4);
1385 #else
1386 /* slow emulation, works for anything but -0 */
1387 uint32_t m;
1388 int e;
1389
1390 if (x == 0e0f ) return 0x00000000U;
1391 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1392 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1393 if (x != x ) return 0x7fbfffffU;
1394
1395 m = ecb_frexpf (x, &e) * 0x1000000U;
1396
1397 r = m & 0x80000000U;
1398
1399 if (r)
1400 m = -m;
1401
1402 if (e <= -126)
1403 {
1404 m &= 0xffffffU;
1405 m >>= (-125 - e);
1406 e = -126;
1407 }
1408
1409 r |= (e + 126) << 23;
1410 r |= m & 0x7fffffU;
1411 #endif
1412
1413 return r;
1414 }
1415
1416 /* converts an ieee single/binary32 to a float */
1417 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1418 ecb_function_ ecb_const float
1419 ecb_binary32_to_float (uint32_t x)
1420 {
1421 float r;
1422
1423 #if ECB_STDFP
1424 memcpy (&r, &x, 4);
1425 #else
1426 /* emulation, only works for normals and subnormals and +0 */
1427 int neg = x >> 31;
1428 int e = (x >> 23) & 0xffU;
1429
1430 x &= 0x7fffffU;
1431
1432 if (e)
1433 x |= 0x800000U;
1434 else
1435 e = 1;
1436
1437 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1438 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1439
1440 r = neg ? -r : r;
1441 #endif
1442
1443 return r;
1444 }
1445
1446 /* convert a double to ieee double/binary64 */
1447 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1448 ecb_function_ ecb_const uint64_t
1449 ecb_double_to_binary64 (double x)
1450 {
1451 uint64_t r;
1452
1453 #if ECB_STDFP
1454 memcpy (&r, &x, 8);
1455 #else
1456 /* slow emulation, works for anything but -0 */
1457 uint64_t m;
1458 int e;
1459
1460 if (x == 0e0 ) return 0x0000000000000000U;
1461 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1462 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1463 if (x != x ) return 0X7ff7ffffffffffffU;
1464
1465 m = frexp (x, &e) * 0x20000000000000U;
1466
1467 r = m & 0x8000000000000000;;
1468
1469 if (r)
1470 m = -m;
1471
1472 if (e <= -1022)
1473 {
1474 m &= 0x1fffffffffffffU;
1475 m >>= (-1021 - e);
1476 e = -1022;
1477 }
1478
1479 r |= ((uint64_t)(e + 1022)) << 52;
1480 r |= m & 0xfffffffffffffU;
1481 #endif
1482
1483 return r;
1484 }
1485
1486 /* converts an ieee double/binary64 to a double */
1487 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1488 ecb_function_ ecb_const double
1489 ecb_binary64_to_double (uint64_t x)
1490 {
1491 double r;
1492
1493 #if ECB_STDFP
1494 memcpy (&r, &x, 8);
1495 #else
1496 /* emulation, only works for normals and subnormals and +0 */
1497 int neg = x >> 63;
1498 int e = (x >> 52) & 0x7ffU;
1499
1500 x &= 0xfffffffffffffU;
1501
1502 if (e)
1503 x |= 0x10000000000000U;
1504 else
1505 e = 1;
1506
1507 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1508 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1509
1510 r = neg ? -r : r;
1511 #endif
1512
1513 return r;
1514 }
1515
1516 /* convert a float to ieee half/binary16 */
1517 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1518 ecb_function_ ecb_const uint16_t
1519 ecb_float_to_binary16 (float x)
1520 {
1521 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1522 }
1523
1524 /* convert an ieee half/binary16 to float */
1525 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1526 ecb_function_ ecb_const float
1527 ecb_binary16_to_float (uint16_t x)
1528 {
1529 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1530 }
1531
1532#endif
1533
1534#endif
1535
1536/* ECB.H END */
1537
1538#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1539/* if your architecture doesn't need memory fences, e.g. because it is
1540 * single-cpu/core, or if you use libev in a project that doesn't use libev
1541 * from multiple threads, then you can define ECB_NO_THREADS when compiling
1542 * libev, in which cases the memory fences become nops.
1543 * alternatively, you can remove this #error and link against libpthread,
1544 * which will then provide the memory fences.
1545 */
1546# error "memory fences not defined for your architecture, please report"
1547#endif
1548
1549#ifndef ECB_MEMORY_FENCE
1550# define ECB_MEMORY_FENCE do { } while (0)
1551# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1552# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1553#endif
1554
476#define inline_size static inline 1555#define inline_size ecb_inline
477 1556
478#if EV_FEATURE_CODE 1557#if EV_FEATURE_CODE
479# define inline_speed static inline 1558# define inline_speed ecb_inline
480#else 1559#else
481# define inline_speed static noinline 1560# define inline_speed ecb_noinline static
482#endif 1561#endif
483 1562
484#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1563#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
485 1564
486#if EV_MINPRI == EV_MAXPRI 1565#if EV_MINPRI == EV_MAXPRI
487# define ABSPRI(w) (((W)w), 0) 1566# define ABSPRI(w) (((W)w), 0)
488#else 1567#else
489# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1568# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
490#endif 1569#endif
491 1570
492#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1571#define EMPTY /* required for microsofts broken pseudo-c compiler */
493#define EMPTY2(a,b) /* used to suppress some warnings */
494 1572
495typedef ev_watcher *W; 1573typedef ev_watcher *W;
496typedef ev_watcher_list *WL; 1574typedef ev_watcher_list *WL;
497typedef ev_watcher_time *WT; 1575typedef ev_watcher_time *WT;
498 1576
… …
523# include "ev_win32.c" 1601# include "ev_win32.c"
524#endif 1602#endif
525 1603
526/*****************************************************************************/ 1604/*****************************************************************************/
527 1605
1606#if EV_USE_LINUXAIO
1607# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
1608#endif
1609
1610/* define a suitable floor function (only used by periodics atm) */
1611
1612#if EV_USE_FLOOR
1613# include <math.h>
1614# define ev_floor(v) floor (v)
1615#else
1616
1617#include <float.h>
1618
1619/* a floor() replacement function, should be independent of ev_tstamp type */
1620ecb_noinline
1621static ev_tstamp
1622ev_floor (ev_tstamp v)
1623{
1624 /* the choice of shift factor is not terribly important */
1625#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1626 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1627#else
1628 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1629#endif
1630
1631 /* argument too large for an unsigned long? */
1632 if (ecb_expect_false (v >= shift))
1633 {
1634 ev_tstamp f;
1635
1636 if (v == v - 1.)
1637 return v; /* very large number */
1638
1639 f = shift * ev_floor (v * (1. / shift));
1640 return f + ev_floor (v - f);
1641 }
1642
1643 /* special treatment for negative args? */
1644 if (ecb_expect_false (v < 0.))
1645 {
1646 ev_tstamp f = -ev_floor (-v);
1647
1648 return f - (f == v ? 0 : 1);
1649 }
1650
1651 /* fits into an unsigned long */
1652 return (unsigned long)v;
1653}
1654
1655#endif
1656
1657/*****************************************************************************/
1658
528#ifdef __linux 1659#ifdef __linux
529# include <sys/utsname.h> 1660# include <sys/utsname.h>
530#endif 1661#endif
531 1662
1663ecb_noinline ecb_cold
532static unsigned int noinline 1664static unsigned int
533ev_linux_version (void) 1665ev_linux_version (void)
534{ 1666{
535#ifdef __linux 1667#ifdef __linux
536 unsigned int v = 0; 1668 unsigned int v = 0;
537 struct utsname buf; 1669 struct utsname buf;
… …
566} 1698}
567 1699
568/*****************************************************************************/ 1700/*****************************************************************************/
569 1701
570#if EV_AVOID_STDIO 1702#if EV_AVOID_STDIO
571static void noinline 1703ecb_noinline ecb_cold
1704static void
572ev_printerr (const char *msg) 1705ev_printerr (const char *msg)
573{ 1706{
574 write (STDERR_FILENO, msg, strlen (msg)); 1707 write (STDERR_FILENO, msg, strlen (msg));
575} 1708}
576#endif 1709#endif
577 1710
578static void (*syserr_cb)(const char *msg); 1711static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
579 1712
1713ecb_cold
580void 1714void
581ev_set_syserr_cb (void (*cb)(const char *msg)) 1715ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
582{ 1716{
583 syserr_cb = cb; 1717 syserr_cb = cb;
584} 1718}
585 1719
586static void noinline 1720ecb_noinline ecb_cold
1721static void
587ev_syserr (const char *msg) 1722ev_syserr (const char *msg)
588{ 1723{
589 if (!msg) 1724 if (!msg)
590 msg = "(libev) system error"; 1725 msg = "(libev) system error";
591 1726
… …
604 abort (); 1739 abort ();
605 } 1740 }
606} 1741}
607 1742
608static void * 1743static void *
609ev_realloc_emul (void *ptr, long size) 1744ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
610{ 1745{
611#if __GLIBC__
612 return realloc (ptr, size);
613#else
614 /* some systems, notably openbsd and darwin, fail to properly 1746 /* some systems, notably openbsd and darwin, fail to properly
615 * implement realloc (x, 0) (as required by both ansi c-89 and 1747 * implement realloc (x, 0) (as required by both ansi c-89 and
616 * the single unix specification, so work around them here. 1748 * the single unix specification, so work around them here.
1749 * recently, also (at least) fedora and debian started breaking it,
1750 * despite documenting it otherwise.
617 */ 1751 */
618 1752
619 if (size) 1753 if (size)
620 return realloc (ptr, size); 1754 return realloc (ptr, size);
621 1755
622 free (ptr); 1756 free (ptr);
623 return 0; 1757 return 0;
624#endif
625} 1758}
626 1759
627static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1760static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
628 1761
1762ecb_cold
629void 1763void
630ev_set_allocator (void *(*cb)(void *ptr, long size)) 1764ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
631{ 1765{
632 alloc = cb; 1766 alloc = cb;
633} 1767}
634 1768
635inline_speed void * 1769inline_speed void *
… …
662typedef struct 1796typedef struct
663{ 1797{
664 WL head; 1798 WL head;
665 unsigned char events; /* the events watched for */ 1799 unsigned char events; /* the events watched for */
666 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */ 1800 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
667 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1801 unsigned char emask; /* some backends store the actual kernel mask in here */
668 unsigned char unused; 1802 unsigned char unused;
669#if EV_USE_EPOLL 1803#if EV_USE_EPOLL
670 unsigned int egen; /* generation counter to counter epoll bugs */ 1804 unsigned int egen; /* generation counter to counter epoll bugs */
671#endif 1805#endif
672#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP 1806#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
… …
723 #undef VAR 1857 #undef VAR
724 }; 1858 };
725 #include "ev_wrap.h" 1859 #include "ev_wrap.h"
726 1860
727 static struct ev_loop default_loop_struct; 1861 static struct ev_loop default_loop_struct;
728 struct ev_loop *ev_default_loop_ptr; 1862 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
729 1863
730#else 1864#else
731 1865
732 ev_tstamp ev_rt_now; 1866 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
733 #define VAR(name,decl) static decl; 1867 #define VAR(name,decl) static decl;
734 #include "ev_vars.h" 1868 #include "ev_vars.h"
735 #undef VAR 1869 #undef VAR
736 1870
737 static int ev_default_loop_ptr; 1871 static int ev_default_loop_ptr;
738 1872
739#endif 1873#endif
740 1874
741#if EV_FEATURE_API 1875#if EV_FEATURE_API
742# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 1876# define EV_RELEASE_CB if (ecb_expect_false (release_cb)) release_cb (EV_A)
743# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 1877# define EV_ACQUIRE_CB if (ecb_expect_false (acquire_cb)) acquire_cb (EV_A)
744# define EV_INVOKE_PENDING invoke_cb (EV_A) 1878# define EV_INVOKE_PENDING invoke_cb (EV_A)
745#else 1879#else
746# define EV_RELEASE_CB (void)0 1880# define EV_RELEASE_CB (void)0
747# define EV_ACQUIRE_CB (void)0 1881# define EV_ACQUIRE_CB (void)0
748# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1882# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
… …
752 1886
753/*****************************************************************************/ 1887/*****************************************************************************/
754 1888
755#ifndef EV_HAVE_EV_TIME 1889#ifndef EV_HAVE_EV_TIME
756ev_tstamp 1890ev_tstamp
757ev_time (void) 1891ev_time (void) EV_NOEXCEPT
758{ 1892{
759#if EV_USE_REALTIME 1893#if EV_USE_REALTIME
760 if (expect_true (have_realtime)) 1894 if (ecb_expect_true (have_realtime))
761 { 1895 {
762 struct timespec ts; 1896 struct timespec ts;
763 clock_gettime (CLOCK_REALTIME, &ts); 1897 clock_gettime (CLOCK_REALTIME, &ts);
764 return ts.tv_sec + ts.tv_nsec * 1e-9; 1898 return ts.tv_sec + ts.tv_nsec * 1e-9;
765 } 1899 }
… …
773 1907
774inline_size ev_tstamp 1908inline_size ev_tstamp
775get_clock (void) 1909get_clock (void)
776{ 1910{
777#if EV_USE_MONOTONIC 1911#if EV_USE_MONOTONIC
778 if (expect_true (have_monotonic)) 1912 if (ecb_expect_true (have_monotonic))
779 { 1913 {
780 struct timespec ts; 1914 struct timespec ts;
781 clock_gettime (CLOCK_MONOTONIC, &ts); 1915 clock_gettime (CLOCK_MONOTONIC, &ts);
782 return ts.tv_sec + ts.tv_nsec * 1e-9; 1916 return ts.tv_sec + ts.tv_nsec * 1e-9;
783 } 1917 }
… …
786 return ev_time (); 1920 return ev_time ();
787} 1921}
788 1922
789#if EV_MULTIPLICITY 1923#if EV_MULTIPLICITY
790ev_tstamp 1924ev_tstamp
791ev_now (EV_P) 1925ev_now (EV_P) EV_NOEXCEPT
792{ 1926{
793 return ev_rt_now; 1927 return ev_rt_now;
794} 1928}
795#endif 1929#endif
796 1930
797void 1931void
798ev_sleep (ev_tstamp delay) 1932ev_sleep (ev_tstamp delay) EV_NOEXCEPT
799{ 1933{
800 if (delay > 0.) 1934 if (delay > 0.)
801 { 1935 {
802#if EV_USE_NANOSLEEP 1936#if EV_USE_NANOSLEEP
803 struct timespec ts; 1937 struct timespec ts;
804 1938
805 EV_TS_SET (ts, delay); 1939 EV_TS_SET (ts, delay);
806 nanosleep (&ts, 0); 1940 nanosleep (&ts, 0);
807#elif defined(_WIN32) 1941#elif defined _WIN32
1942 /* maybe this should round up, as ms is very low resolution */
1943 /* compared to select (µs) or nanosleep (ns) */
808 Sleep ((unsigned long)(delay * 1e3)); 1944 Sleep ((unsigned long)(delay * 1e3));
809#else 1945#else
810 struct timeval tv; 1946 struct timeval tv;
811 1947
812 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1948 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
… …
816 select (0, 0, 0, 0, &tv); 1952 select (0, 0, 0, 0, &tv);
817#endif 1953#endif
818 } 1954 }
819} 1955}
820 1956
821inline_speed int
822ev_timeout_to_ms (ev_tstamp timeout)
823{
824 int ms = timeout * 1000. + .999999;
825
826 return expect_true (ms) ? ms : timeout < 1e-6 ? 0 : 1;
827}
828
829/*****************************************************************************/ 1957/*****************************************************************************/
830 1958
831#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1959#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
832 1960
833/* find a suitable new size for the given array, */ 1961/* find a suitable new size for the given array, */
… …
839 1967
840 do 1968 do
841 ncur <<= 1; 1969 ncur <<= 1;
842 while (cnt > ncur); 1970 while (cnt > ncur);
843 1971
844 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1972 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
845 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1973 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
846 { 1974 {
847 ncur *= elem; 1975 ncur *= elem;
848 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1976 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
849 ncur = ncur - sizeof (void *) * 4; 1977 ncur = ncur - sizeof (void *) * 4;
… …
851 } 1979 }
852 1980
853 return ncur; 1981 return ncur;
854} 1982}
855 1983
856static noinline void * 1984ecb_noinline ecb_cold
1985static void *
857array_realloc (int elem, void *base, int *cur, int cnt) 1986array_realloc (int elem, void *base, int *cur, int cnt)
858{ 1987{
859 *cur = array_nextsize (elem, *cur, cnt); 1988 *cur = array_nextsize (elem, *cur, cnt);
860 return ev_realloc (base, elem * *cur); 1989 return ev_realloc (base, elem * *cur);
861} 1990}
862 1991
1992#define array_needsize_noinit(base,offset,count)
1993
863#define array_init_zero(base,count) \ 1994#define array_needsize_zerofill(base,offset,count) \
864 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1995 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
865 1996
866#define array_needsize(type,base,cur,cnt,init) \ 1997#define array_needsize(type,base,cur,cnt,init) \
867 if (expect_false ((cnt) > (cur))) \ 1998 if (ecb_expect_false ((cnt) > (cur))) \
868 { \ 1999 { \
869 int ocur_ = (cur); \ 2000 ecb_unused int ocur_ = (cur); \
870 (base) = (type *)array_realloc \ 2001 (base) = (type *)array_realloc \
871 (sizeof (type), (base), &(cur), (cnt)); \ 2002 (sizeof (type), (base), &(cur), (cnt)); \
872 init ((base) + (ocur_), (cur) - ocur_); \ 2003 init ((base), ocur_, ((cur) - ocur_)); \
873 } 2004 }
874 2005
875#if 0 2006#if 0
876#define array_slim(type,stem) \ 2007#define array_slim(type,stem) \
877 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2008 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
… …
886 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 2017 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
887 2018
888/*****************************************************************************/ 2019/*****************************************************************************/
889 2020
890/* dummy callback for pending events */ 2021/* dummy callback for pending events */
891static void noinline 2022ecb_noinline
2023static void
892pendingcb (EV_P_ ev_prepare *w, int revents) 2024pendingcb (EV_P_ ev_prepare *w, int revents)
893{ 2025{
894} 2026}
895 2027
896void noinline 2028ecb_noinline
2029void
897ev_feed_event (EV_P_ void *w, int revents) 2030ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
898{ 2031{
899 W w_ = (W)w; 2032 W w_ = (W)w;
900 int pri = ABSPRI (w_); 2033 int pri = ABSPRI (w_);
901 2034
902 if (expect_false (w_->pending)) 2035 if (ecb_expect_false (w_->pending))
903 pendings [pri][w_->pending - 1].events |= revents; 2036 pendings [pri][w_->pending - 1].events |= revents;
904 else 2037 else
905 { 2038 {
906 w_->pending = ++pendingcnt [pri]; 2039 w_->pending = ++pendingcnt [pri];
907 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2040 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
908 pendings [pri][w_->pending - 1].w = w_; 2041 pendings [pri][w_->pending - 1].w = w_;
909 pendings [pri][w_->pending - 1].events = revents; 2042 pendings [pri][w_->pending - 1].events = revents;
910 } 2043 }
2044
2045 pendingpri = NUMPRI - 1;
911} 2046}
912 2047
913inline_speed void 2048inline_speed void
914feed_reverse (EV_P_ W w) 2049feed_reverse (EV_P_ W w)
915{ 2050{
916 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2051 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
917 rfeeds [rfeedcnt++] = w; 2052 rfeeds [rfeedcnt++] = w;
918} 2053}
919 2054
920inline_size void 2055inline_size void
921feed_reverse_done (EV_P_ int revents) 2056feed_reverse_done (EV_P_ int revents)
… …
956inline_speed void 2091inline_speed void
957fd_event (EV_P_ int fd, int revents) 2092fd_event (EV_P_ int fd, int revents)
958{ 2093{
959 ANFD *anfd = anfds + fd; 2094 ANFD *anfd = anfds + fd;
960 2095
961 if (expect_true (!anfd->reify)) 2096 if (ecb_expect_true (!anfd->reify))
962 fd_event_nocheck (EV_A_ fd, revents); 2097 fd_event_nocheck (EV_A_ fd, revents);
963} 2098}
964 2099
965void 2100void
966ev_feed_fd_event (EV_P_ int fd, int revents) 2101ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
967{ 2102{
968 if (fd >= 0 && fd < anfdmax) 2103 if (fd >= 0 && fd < anfdmax)
969 fd_event_nocheck (EV_A_ fd, revents); 2104 fd_event_nocheck (EV_A_ fd, revents);
970} 2105}
971 2106
… …
980 for (i = 0; i < fdchangecnt; ++i) 2115 for (i = 0; i < fdchangecnt; ++i)
981 { 2116 {
982 int fd = fdchanges [i]; 2117 int fd = fdchanges [i];
983 ANFD *anfd = anfds + fd; 2118 ANFD *anfd = anfds + fd;
984 2119
985 if (anfd->reify & EV__IOFDSET) 2120 if (anfd->reify & EV__IOFDSET && anfd->head)
986 { 2121 {
987 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd); 2122 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
988 2123
989 if (handle != anfd->handle) 2124 if (handle != anfd->handle)
990 { 2125 {
… …
1008 ev_io *w; 2143 ev_io *w;
1009 2144
1010 unsigned char o_events = anfd->events; 2145 unsigned char o_events = anfd->events;
1011 unsigned char o_reify = anfd->reify; 2146 unsigned char o_reify = anfd->reify;
1012 2147
1013 anfd->reify = 0; 2148 anfd->reify = 0;
1014 2149
1015 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ 2150 /*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
1016 { 2151 {
1017 anfd->events = 0; 2152 anfd->events = 0;
1018 2153
1019 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2154 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
1020 anfd->events |= (unsigned char)w->events; 2155 anfd->events |= (unsigned char)w->events;
… …
1029 2164
1030 fdchangecnt = 0; 2165 fdchangecnt = 0;
1031} 2166}
1032 2167
1033/* something about the given fd changed */ 2168/* something about the given fd changed */
1034inline_size void 2169inline_size
2170void
1035fd_change (EV_P_ int fd, int flags) 2171fd_change (EV_P_ int fd, int flags)
1036{ 2172{
1037 unsigned char reify = anfds [fd].reify; 2173 unsigned char reify = anfds [fd].reify;
1038 anfds [fd].reify |= flags; 2174 anfds [fd].reify |= flags;
1039 2175
1040 if (expect_true (!reify)) 2176 if (ecb_expect_true (!reify))
1041 { 2177 {
1042 ++fdchangecnt; 2178 ++fdchangecnt;
1043 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2179 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
1044 fdchanges [fdchangecnt - 1] = fd; 2180 fdchanges [fdchangecnt - 1] = fd;
1045 } 2181 }
1046} 2182}
1047 2183
1048/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2184/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1049inline_speed void 2185inline_speed ecb_cold void
1050fd_kill (EV_P_ int fd) 2186fd_kill (EV_P_ int fd)
1051{ 2187{
1052 ev_io *w; 2188 ev_io *w;
1053 2189
1054 while ((w = (ev_io *)anfds [fd].head)) 2190 while ((w = (ev_io *)anfds [fd].head))
… …
1057 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2193 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1058 } 2194 }
1059} 2195}
1060 2196
1061/* check whether the given fd is actually valid, for error recovery */ 2197/* check whether the given fd is actually valid, for error recovery */
1062inline_size int 2198inline_size ecb_cold int
1063fd_valid (int fd) 2199fd_valid (int fd)
1064{ 2200{
1065#ifdef _WIN32 2201#ifdef _WIN32
1066 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2202 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1067#else 2203#else
1068 return fcntl (fd, F_GETFD) != -1; 2204 return fcntl (fd, F_GETFD) != -1;
1069#endif 2205#endif
1070} 2206}
1071 2207
1072/* called on EBADF to verify fds */ 2208/* called on EBADF to verify fds */
1073static void noinline 2209ecb_noinline ecb_cold
2210static void
1074fd_ebadf (EV_P) 2211fd_ebadf (EV_P)
1075{ 2212{
1076 int fd; 2213 int fd;
1077 2214
1078 for (fd = 0; fd < anfdmax; ++fd) 2215 for (fd = 0; fd < anfdmax; ++fd)
… …
1080 if (!fd_valid (fd) && errno == EBADF) 2217 if (!fd_valid (fd) && errno == EBADF)
1081 fd_kill (EV_A_ fd); 2218 fd_kill (EV_A_ fd);
1082} 2219}
1083 2220
1084/* called on ENOMEM in select/poll to kill some fds and retry */ 2221/* called on ENOMEM in select/poll to kill some fds and retry */
1085static void noinline 2222ecb_noinline ecb_cold
2223static void
1086fd_enomem (EV_P) 2224fd_enomem (EV_P)
1087{ 2225{
1088 int fd; 2226 int fd;
1089 2227
1090 for (fd = anfdmax; fd--; ) 2228 for (fd = anfdmax; fd--; )
… …
1094 break; 2232 break;
1095 } 2233 }
1096} 2234}
1097 2235
1098/* usually called after fork if backend needs to re-arm all fds from scratch */ 2236/* usually called after fork if backend needs to re-arm all fds from scratch */
1099static void noinline 2237ecb_noinline
2238static void
1100fd_rearm_all (EV_P) 2239fd_rearm_all (EV_P)
1101{ 2240{
1102 int fd; 2241 int fd;
1103 2242
1104 for (fd = 0; fd < anfdmax; ++fd) 2243 for (fd = 0; fd < anfdmax; ++fd)
… …
1157 ev_tstamp minat; 2296 ev_tstamp minat;
1158 ANHE *minpos; 2297 ANHE *minpos;
1159 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; 2298 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
1160 2299
1161 /* find minimum child */ 2300 /* find minimum child */
1162 if (expect_true (pos + DHEAP - 1 < E)) 2301 if (ecb_expect_true (pos + DHEAP - 1 < E))
1163 { 2302 {
1164 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2303 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1165 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2304 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1166 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2305 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1167 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2306 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
… …
1285 2424
1286/*****************************************************************************/ 2425/*****************************************************************************/
1287 2426
1288#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2427#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1289 2428
1290static void noinline 2429ecb_noinline ecb_cold
2430static void
1291evpipe_init (EV_P) 2431evpipe_init (EV_P)
1292{ 2432{
1293 if (!ev_is_active (&pipe_w)) 2433 if (!ev_is_active (&pipe_w))
1294 { 2434 {
2435 int fds [2];
2436
1295# if EV_USE_EVENTFD 2437# if EV_USE_EVENTFD
2438 fds [0] = -1;
1296 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2439 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1297 if (evfd < 0 && errno == EINVAL) 2440 if (fds [1] < 0 && errno == EINVAL)
1298 evfd = eventfd (0, 0); 2441 fds [1] = eventfd (0, 0);
1299 2442
1300 if (evfd >= 0) 2443 if (fds [1] < 0)
2444# endif
1301 { 2445 {
2446 while (pipe (fds))
2447 ev_syserr ("(libev) error creating signal/async pipe");
2448
2449 fd_intern (fds [0]);
2450 }
2451
1302 evpipe [0] = -1; 2452 evpipe [0] = fds [0];
1303 fd_intern (evfd); /* doing it twice doesn't hurt */ 2453
1304 ev_io_set (&pipe_w, evfd, EV_READ); 2454 if (evpipe [1] < 0)
2455 evpipe [1] = fds [1]; /* first call, set write fd */
2456 else
2457 {
2458 /* on subsequent calls, do not change evpipe [1] */
2459 /* so that evpipe_write can always rely on its value. */
2460 /* this branch does not do anything sensible on windows, */
2461 /* so must not be executed on windows */
2462
2463 dup2 (fds [1], evpipe [1]);
2464 close (fds [1]);
2465 }
2466
2467 fd_intern (evpipe [1]);
2468
2469 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2470 ev_io_start (EV_A_ &pipe_w);
2471 ev_unref (EV_A); /* watcher should not keep loop alive */
2472 }
2473}
2474
2475inline_speed void
2476evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2477{
2478 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2479
2480 if (ecb_expect_true (*flag))
2481 return;
2482
2483 *flag = 1;
2484 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2485
2486 pipe_write_skipped = 1;
2487
2488 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2489
2490 if (pipe_write_wanted)
2491 {
2492 int old_errno;
2493
2494 pipe_write_skipped = 0;
2495 ECB_MEMORY_FENCE_RELEASE;
2496
2497 old_errno = errno; /* save errno because write will clobber it */
2498
2499#if EV_USE_EVENTFD
2500 if (evpipe [0] < 0)
2501 {
2502 uint64_t counter = 1;
2503 write (evpipe [1], &counter, sizeof (uint64_t));
1305 } 2504 }
1306 else 2505 else
1307# endif 2506#endif
1308 { 2507 {
1309 while (pipe (evpipe)) 2508#ifdef _WIN32
1310 ev_syserr ("(libev) error creating signal/async pipe"); 2509 WSABUF buf;
1311 2510 DWORD sent;
1312 fd_intern (evpipe [0]); 2511 buf.buf = (char *)&buf;
1313 fd_intern (evpipe [1]); 2512 buf.len = 1;
1314 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2513 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2514#else
2515 write (evpipe [1], &(evpipe [1]), 1);
2516#endif
1315 } 2517 }
1316
1317 ev_io_start (EV_A_ &pipe_w);
1318 ev_unref (EV_A); /* watcher should not keep loop alive */
1319 }
1320}
1321
1322inline_size void
1323evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1324{
1325 if (!*flag)
1326 {
1327 int old_errno = errno; /* save errno because write might clobber it */
1328 char dummy;
1329
1330 *flag = 1;
1331
1332#if EV_USE_EVENTFD
1333 if (evfd >= 0)
1334 {
1335 uint64_t counter = 1;
1336 write (evfd, &counter, sizeof (uint64_t));
1337 }
1338 else
1339#endif
1340 /* win32 people keep sending patches that change this write() to send() */
1341 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1342 /* so when you think this write should be a send instead, please find out */
1343 /* where your send() is from - it's definitely not the microsoft send, and */
1344 /* tell me. thank you. */
1345 write (evpipe [1], &dummy, 1);
1346 2518
1347 errno = old_errno; 2519 errno = old_errno;
1348 } 2520 }
1349} 2521}
1350 2522
… …
1353static void 2525static void
1354pipecb (EV_P_ ev_io *iow, int revents) 2526pipecb (EV_P_ ev_io *iow, int revents)
1355{ 2527{
1356 int i; 2528 int i;
1357 2529
2530 if (revents & EV_READ)
2531 {
1358#if EV_USE_EVENTFD 2532#if EV_USE_EVENTFD
1359 if (evfd >= 0) 2533 if (evpipe [0] < 0)
1360 { 2534 {
1361 uint64_t counter; 2535 uint64_t counter;
1362 read (evfd, &counter, sizeof (uint64_t)); 2536 read (evpipe [1], &counter, sizeof (uint64_t));
1363 } 2537 }
1364 else 2538 else
1365#endif 2539#endif
1366 { 2540 {
1367 char dummy; 2541 char dummy[4];
1368 /* see discussion in evpipe_write when you think this read should be recv in win32 */ 2542#ifdef _WIN32
2543 WSABUF buf;
2544 DWORD recvd;
2545 DWORD flags = 0;
2546 buf.buf = dummy;
2547 buf.len = sizeof (dummy);
2548 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2549#else
1369 read (evpipe [0], &dummy, 1); 2550 read (evpipe [0], &dummy, sizeof (dummy));
2551#endif
2552 }
1370 } 2553 }
2554
2555 pipe_write_skipped = 0;
2556
2557 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1371 2558
1372#if EV_SIGNAL_ENABLE 2559#if EV_SIGNAL_ENABLE
1373 if (sig_pending) 2560 if (sig_pending)
1374 { 2561 {
1375 sig_pending = 0; 2562 sig_pending = 0;
1376 2563
2564 ECB_MEMORY_FENCE;
2565
1377 for (i = EV_NSIG - 1; i--; ) 2566 for (i = EV_NSIG - 1; i--; )
1378 if (expect_false (signals [i].pending)) 2567 if (ecb_expect_false (signals [i].pending))
1379 ev_feed_signal_event (EV_A_ i + 1); 2568 ev_feed_signal_event (EV_A_ i + 1);
1380 } 2569 }
1381#endif 2570#endif
1382 2571
1383#if EV_ASYNC_ENABLE 2572#if EV_ASYNC_ENABLE
1384 if (async_pending) 2573 if (async_pending)
1385 { 2574 {
1386 async_pending = 0; 2575 async_pending = 0;
2576
2577 ECB_MEMORY_FENCE;
1387 2578
1388 for (i = asynccnt; i--; ) 2579 for (i = asynccnt; i--; )
1389 if (asyncs [i]->sent) 2580 if (asyncs [i]->sent)
1390 { 2581 {
1391 asyncs [i]->sent = 0; 2582 asyncs [i]->sent = 0;
2583 ECB_MEMORY_FENCE_RELEASE;
1392 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2584 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1393 } 2585 }
1394 } 2586 }
1395#endif 2587#endif
1396} 2588}
1397 2589
1398/*****************************************************************************/ 2590/*****************************************************************************/
1399 2591
1400void 2592void
1401ev_feed_signal (int signum) 2593ev_feed_signal (int signum) EV_NOEXCEPT
1402{ 2594{
1403#if EV_MULTIPLICITY 2595#if EV_MULTIPLICITY
2596 EV_P;
2597 ECB_MEMORY_FENCE_ACQUIRE;
1404 EV_P = signals [signum - 1].loop; 2598 EV_A = signals [signum - 1].loop;
1405 2599
1406 if (!EV_A) 2600 if (!EV_A)
1407 return; 2601 return;
1408#endif 2602#endif
1409 2603
… …
1419#endif 2613#endif
1420 2614
1421 ev_feed_signal (signum); 2615 ev_feed_signal (signum);
1422} 2616}
1423 2617
1424void noinline 2618ecb_noinline
2619void
1425ev_feed_signal_event (EV_P_ int signum) 2620ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
1426{ 2621{
1427 WL w; 2622 WL w;
1428 2623
1429 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2624 if (ecb_expect_false (signum <= 0 || signum >= EV_NSIG))
1430 return; 2625 return;
1431 2626
1432 --signum; 2627 --signum;
1433 2628
1434#if EV_MULTIPLICITY 2629#if EV_MULTIPLICITY
1435 /* it is permissible to try to feed a signal to the wrong loop */ 2630 /* it is permissible to try to feed a signal to the wrong loop */
1436 /* or, likely more useful, feeding a signal nobody is waiting for */ 2631 /* or, likely more useful, feeding a signal nobody is waiting for */
1437 2632
1438 if (expect_false (signals [signum].loop != EV_A)) 2633 if (ecb_expect_false (signals [signum].loop != EV_A))
1439 return; 2634 return;
1440#endif 2635#endif
1441 2636
1442 signals [signum].pending = 0; 2637 signals [signum].pending = 0;
2638 ECB_MEMORY_FENCE_RELEASE;
1443 2639
1444 for (w = signals [signum].head; w; w = w->next) 2640 for (w = signals [signum].head; w; w = w->next)
1445 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2641 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1446} 2642}
1447 2643
… …
1538# include "ev_kqueue.c" 2734# include "ev_kqueue.c"
1539#endif 2735#endif
1540#if EV_USE_EPOLL 2736#if EV_USE_EPOLL
1541# include "ev_epoll.c" 2737# include "ev_epoll.c"
1542#endif 2738#endif
2739#if EV_USE_LINUXAIO
2740# include "ev_linuxaio.c"
2741#endif
1543#if EV_USE_POLL 2742#if EV_USE_POLL
1544# include "ev_poll.c" 2743# include "ev_poll.c"
1545#endif 2744#endif
1546#if EV_USE_SELECT 2745#if EV_USE_SELECT
1547# include "ev_select.c" 2746# include "ev_select.c"
1548#endif 2747#endif
1549 2748
1550int 2749ecb_cold int
1551ev_version_major (void) 2750ev_version_major (void) EV_NOEXCEPT
1552{ 2751{
1553 return EV_VERSION_MAJOR; 2752 return EV_VERSION_MAJOR;
1554} 2753}
1555 2754
1556int 2755ecb_cold int
1557ev_version_minor (void) 2756ev_version_minor (void) EV_NOEXCEPT
1558{ 2757{
1559 return EV_VERSION_MINOR; 2758 return EV_VERSION_MINOR;
1560} 2759}
1561 2760
1562/* return true if we are running with elevated privileges and should ignore env variables */ 2761/* return true if we are running with elevated privileges and should ignore env variables */
1563int inline_size 2762inline_size ecb_cold int
1564enable_secure (void) 2763enable_secure (void)
1565{ 2764{
1566#ifdef _WIN32 2765#ifdef _WIN32
1567 return 0; 2766 return 0;
1568#else 2767#else
1569 return getuid () != geteuid () 2768 return getuid () != geteuid ()
1570 || getgid () != getegid (); 2769 || getgid () != getegid ();
1571#endif 2770#endif
1572} 2771}
1573 2772
2773ecb_cold
1574unsigned int 2774unsigned int
1575ev_supported_backends (void) 2775ev_supported_backends (void) EV_NOEXCEPT
1576{ 2776{
1577 unsigned int flags = 0; 2777 unsigned int flags = 0;
1578 2778
1579 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2779 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1580 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2780 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
1581 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 2781 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2782 if (EV_USE_LINUXAIO) flags |= EVBACKEND_LINUXAIO;
1582 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 2783 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
1583 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2784 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
1584 2785
1585 return flags; 2786 return flags;
1586} 2787}
1587 2788
2789ecb_cold
1588unsigned int 2790unsigned int
1589ev_recommended_backends (void) 2791ev_recommended_backends (void) EV_NOEXCEPT
1590{ 2792{
1591 unsigned int flags = ev_supported_backends (); 2793 unsigned int flags = ev_supported_backends ();
1592 2794
1593#ifndef __NetBSD__ 2795#ifndef __NetBSD__
1594 /* kqueue is borked on everything but netbsd apparently */ 2796 /* kqueue is borked on everything but netbsd apparently */
… …
1602#endif 2804#endif
1603#ifdef __FreeBSD__ 2805#ifdef __FreeBSD__
1604 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */ 2806 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1605#endif 2807#endif
1606 2808
2809 /* TODO: linuxaio is very experimental */
2810#if !EV_RECOMMEND_LINUXAIO
2811 flags &= ~EVBACKEND_LINUXAIO;
2812#endif
2813
1607 return flags; 2814 return flags;
1608} 2815}
1609 2816
2817ecb_cold
1610unsigned int 2818unsigned int
1611ev_embeddable_backends (void) 2819ev_embeddable_backends (void) EV_NOEXCEPT
1612{ 2820{
1613 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2821 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1614 2822
1615 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2823 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1616 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ 2824 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
… …
1618 2826
1619 return flags; 2827 return flags;
1620} 2828}
1621 2829
1622unsigned int 2830unsigned int
1623ev_backend (EV_P) 2831ev_backend (EV_P) EV_NOEXCEPT
1624{ 2832{
1625 return backend; 2833 return backend;
1626} 2834}
1627 2835
1628#if EV_FEATURE_API 2836#if EV_FEATURE_API
1629unsigned int 2837unsigned int
1630ev_iteration (EV_P) 2838ev_iteration (EV_P) EV_NOEXCEPT
1631{ 2839{
1632 return loop_count; 2840 return loop_count;
1633} 2841}
1634 2842
1635unsigned int 2843unsigned int
1636ev_depth (EV_P) 2844ev_depth (EV_P) EV_NOEXCEPT
1637{ 2845{
1638 return loop_depth; 2846 return loop_depth;
1639} 2847}
1640 2848
1641void 2849void
1642ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2850ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1643{ 2851{
1644 io_blocktime = interval; 2852 io_blocktime = interval;
1645} 2853}
1646 2854
1647void 2855void
1648ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2856ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1649{ 2857{
1650 timeout_blocktime = interval; 2858 timeout_blocktime = interval;
1651} 2859}
1652 2860
1653void 2861void
1654ev_set_userdata (EV_P_ void *data) 2862ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
1655{ 2863{
1656 userdata = data; 2864 userdata = data;
1657} 2865}
1658 2866
1659void * 2867void *
1660ev_userdata (EV_P) 2868ev_userdata (EV_P) EV_NOEXCEPT
1661{ 2869{
1662 return userdata; 2870 return userdata;
1663} 2871}
1664 2872
2873void
1665void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2874ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
1666{ 2875{
1667 invoke_cb = invoke_pending_cb; 2876 invoke_cb = invoke_pending_cb;
1668} 2877}
1669 2878
2879void
1670void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2880ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
1671{ 2881{
1672 release_cb = release; 2882 release_cb = release;
1673 acquire_cb = acquire; 2883 acquire_cb = acquire;
1674} 2884}
1675#endif 2885#endif
1676 2886
1677/* initialise a loop structure, must be zero-initialised */ 2887/* initialise a loop structure, must be zero-initialised */
1678static void noinline 2888ecb_noinline ecb_cold
2889static void
1679loop_init (EV_P_ unsigned int flags) 2890loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
1680{ 2891{
1681 if (!backend) 2892 if (!backend)
1682 { 2893 {
1683 origflags = flags; 2894 origflags = flags;
1684 2895
… …
1711 if (!(flags & EVFLAG_NOENV) 2922 if (!(flags & EVFLAG_NOENV)
1712 && !enable_secure () 2923 && !enable_secure ()
1713 && getenv ("LIBEV_FLAGS")) 2924 && getenv ("LIBEV_FLAGS"))
1714 flags = atoi (getenv ("LIBEV_FLAGS")); 2925 flags = atoi (getenv ("LIBEV_FLAGS"));
1715 2926
1716 ev_rt_now = ev_time (); 2927 ev_rt_now = ev_time ();
1717 mn_now = get_clock (); 2928 mn_now = get_clock ();
1718 now_floor = mn_now; 2929 now_floor = mn_now;
1719 rtmn_diff = ev_rt_now - mn_now; 2930 rtmn_diff = ev_rt_now - mn_now;
1720#if EV_FEATURE_API 2931#if EV_FEATURE_API
1721 invoke_cb = ev_invoke_pending; 2932 invoke_cb = ev_invoke_pending;
1722#endif 2933#endif
1723 2934
1724 io_blocktime = 0.; 2935 io_blocktime = 0.;
1725 timeout_blocktime = 0.; 2936 timeout_blocktime = 0.;
1726 backend = 0; 2937 backend = 0;
1727 backend_fd = -1; 2938 backend_fd = -1;
1728 sig_pending = 0; 2939 sig_pending = 0;
1729#if EV_ASYNC_ENABLE 2940#if EV_ASYNC_ENABLE
1730 async_pending = 0; 2941 async_pending = 0;
1731#endif 2942#endif
2943 pipe_write_skipped = 0;
2944 pipe_write_wanted = 0;
2945 evpipe [0] = -1;
2946 evpipe [1] = -1;
1732#if EV_USE_INOTIFY 2947#if EV_USE_INOTIFY
1733 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2948 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1734#endif 2949#endif
1735#if EV_USE_SIGNALFD 2950#if EV_USE_SIGNALFD
1736 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2951 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1737#endif 2952#endif
1738 2953
1739 if (!(flags & EVBACKEND_MASK)) 2954 if (!(flags & EVBACKEND_MASK))
1740 flags |= ev_recommended_backends (); 2955 flags |= ev_recommended_backends ();
1741 2956
1742#if EV_USE_IOCP 2957#if EV_USE_IOCP
1743 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags); 2958 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
1744#endif 2959#endif
1745#if EV_USE_PORT 2960#if EV_USE_PORT
1746 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2961 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1747#endif 2962#endif
1748#if EV_USE_KQUEUE 2963#if EV_USE_KQUEUE
1749 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2964 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
2965#endif
2966#if EV_USE_LINUXAIO
2967 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
1750#endif 2968#endif
1751#if EV_USE_EPOLL 2969#if EV_USE_EPOLL
1752 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 2970 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
1753#endif 2971#endif
1754#if EV_USE_POLL 2972#if EV_USE_POLL
1755 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 2973 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
1756#endif 2974#endif
1757#if EV_USE_SELECT 2975#if EV_USE_SELECT
1758 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2976 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
1759#endif 2977#endif
1760 2978
1761 ev_prepare_init (&pending_w, pendingcb); 2979 ev_prepare_init (&pending_w, pendingcb);
1762 2980
1763#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2981#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
… …
1766#endif 2984#endif
1767 } 2985 }
1768} 2986}
1769 2987
1770/* free up a loop structure */ 2988/* free up a loop structure */
2989ecb_cold
1771void 2990void
1772ev_loop_destroy (EV_P) 2991ev_loop_destroy (EV_P)
1773{ 2992{
1774 int i; 2993 int i;
1775 2994
… …
1779 return; 2998 return;
1780#endif 2999#endif
1781 3000
1782#if EV_CLEANUP_ENABLE 3001#if EV_CLEANUP_ENABLE
1783 /* queue cleanup watchers (and execute them) */ 3002 /* queue cleanup watchers (and execute them) */
1784 if (expect_false (cleanupcnt)) 3003 if (ecb_expect_false (cleanupcnt))
1785 { 3004 {
1786 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP); 3005 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
1787 EV_INVOKE_PENDING; 3006 EV_INVOKE_PENDING;
1788 } 3007 }
1789#endif 3008#endif
1790 3009
1791#if EV_CHILD_ENABLE 3010#if EV_CHILD_ENABLE
1792 if (ev_is_active (&childev)) 3011 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
1793 { 3012 {
1794 ev_ref (EV_A); /* child watcher */ 3013 ev_ref (EV_A); /* child watcher */
1795 ev_signal_stop (EV_A_ &childev); 3014 ev_signal_stop (EV_A_ &childev);
1796 } 3015 }
1797#endif 3016#endif
… …
1799 if (ev_is_active (&pipe_w)) 3018 if (ev_is_active (&pipe_w))
1800 { 3019 {
1801 /*ev_ref (EV_A);*/ 3020 /*ev_ref (EV_A);*/
1802 /*ev_io_stop (EV_A_ &pipe_w);*/ 3021 /*ev_io_stop (EV_A_ &pipe_w);*/
1803 3022
1804#if EV_USE_EVENTFD
1805 if (evfd >= 0)
1806 close (evfd);
1807#endif
1808
1809 if (evpipe [0] >= 0)
1810 {
1811 EV_WIN32_CLOSE_FD (evpipe [0]); 3023 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1812 EV_WIN32_CLOSE_FD (evpipe [1]); 3024 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1813 }
1814 } 3025 }
1815 3026
1816#if EV_USE_SIGNALFD 3027#if EV_USE_SIGNALFD
1817 if (ev_is_active (&sigfd_w)) 3028 if (ev_is_active (&sigfd_w))
1818 close (sigfd); 3029 close (sigfd);
… …
1825 3036
1826 if (backend_fd >= 0) 3037 if (backend_fd >= 0)
1827 close (backend_fd); 3038 close (backend_fd);
1828 3039
1829#if EV_USE_IOCP 3040#if EV_USE_IOCP
1830 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A); 3041 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
1831#endif 3042#endif
1832#if EV_USE_PORT 3043#if EV_USE_PORT
1833 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3044 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1834#endif 3045#endif
1835#if EV_USE_KQUEUE 3046#if EV_USE_KQUEUE
1836 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3047 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
3048#endif
3049#if EV_USE_LINUXAIO
3050 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
1837#endif 3051#endif
1838#if EV_USE_EPOLL 3052#if EV_USE_EPOLL
1839 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3053 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
1840#endif 3054#endif
1841#if EV_USE_POLL 3055#if EV_USE_POLL
1842 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3056 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
1843#endif 3057#endif
1844#if EV_USE_SELECT 3058#if EV_USE_SELECT
1845 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3059 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
1846#endif 3060#endif
1847 3061
1848 for (i = NUMPRI; i--; ) 3062 for (i = NUMPRI; i--; )
1849 { 3063 {
1850 array_free (pending, [i]); 3064 array_free (pending, [i]);
… …
1892 3106
1893inline_size void 3107inline_size void
1894loop_fork (EV_P) 3108loop_fork (EV_P)
1895{ 3109{
1896#if EV_USE_PORT 3110#if EV_USE_PORT
1897 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3111 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1898#endif 3112#endif
1899#if EV_USE_KQUEUE 3113#if EV_USE_KQUEUE
1900 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 3114 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
3115#endif
3116#if EV_USE_LINUXAIO
3117 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
1901#endif 3118#endif
1902#if EV_USE_EPOLL 3119#if EV_USE_EPOLL
1903 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3120 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
1904#endif 3121#endif
1905#if EV_USE_INOTIFY 3122#if EV_USE_INOTIFY
1906 infy_fork (EV_A); 3123 infy_fork (EV_A);
1907#endif 3124#endif
1908 3125
3126#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1909 if (ev_is_active (&pipe_w)) 3127 if (ev_is_active (&pipe_w) && postfork != 2)
1910 { 3128 {
1911 /* this "locks" the handlers against writing to the pipe */ 3129 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1912 /* while we modify the fd vars */
1913 sig_pending = 1;
1914#if EV_ASYNC_ENABLE
1915 async_pending = 1;
1916#endif
1917 3130
1918 ev_ref (EV_A); 3131 ev_ref (EV_A);
1919 ev_io_stop (EV_A_ &pipe_w); 3132 ev_io_stop (EV_A_ &pipe_w);
1920 3133
1921#if EV_USE_EVENTFD
1922 if (evfd >= 0)
1923 close (evfd);
1924#endif
1925
1926 if (evpipe [0] >= 0) 3134 if (evpipe [0] >= 0)
1927 {
1928 EV_WIN32_CLOSE_FD (evpipe [0]); 3135 EV_WIN32_CLOSE_FD (evpipe [0]);
1929 EV_WIN32_CLOSE_FD (evpipe [1]);
1930 }
1931 3136
1932#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1933 evpipe_init (EV_A); 3137 evpipe_init (EV_A);
1934 /* now iterate over everything, in case we missed something */ 3138 /* iterate over everything, in case we missed something before */
1935 pipecb (EV_A_ &pipe_w, EV_READ); 3139 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1936#endif
1937 } 3140 }
3141#endif
1938 3142
1939 postfork = 0; 3143 postfork = 0;
1940} 3144}
1941 3145
1942#if EV_MULTIPLICITY 3146#if EV_MULTIPLICITY
1943 3147
3148ecb_cold
1944struct ev_loop * 3149struct ev_loop *
1945ev_loop_new (unsigned int flags) 3150ev_loop_new (unsigned int flags) EV_NOEXCEPT
1946{ 3151{
1947 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3152 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1948 3153
1949 memset (EV_A, 0, sizeof (struct ev_loop)); 3154 memset (EV_A, 0, sizeof (struct ev_loop));
1950 loop_init (EV_A_ flags); 3155 loop_init (EV_A_ flags);
… …
1957} 3162}
1958 3163
1959#endif /* multiplicity */ 3164#endif /* multiplicity */
1960 3165
1961#if EV_VERIFY 3166#if EV_VERIFY
1962static void noinline 3167ecb_noinline ecb_cold
3168static void
1963verify_watcher (EV_P_ W w) 3169verify_watcher (EV_P_ W w)
1964{ 3170{
1965 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3171 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1966 3172
1967 if (w->pending) 3173 if (w->pending)
1968 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3174 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1969} 3175}
1970 3176
1971static void noinline 3177ecb_noinline ecb_cold
3178static void
1972verify_heap (EV_P_ ANHE *heap, int N) 3179verify_heap (EV_P_ ANHE *heap, int N)
1973{ 3180{
1974 int i; 3181 int i;
1975 3182
1976 for (i = HEAP0; i < N + HEAP0; ++i) 3183 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1981 3188
1982 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3189 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1983 } 3190 }
1984} 3191}
1985 3192
1986static void noinline 3193ecb_noinline ecb_cold
3194static void
1987array_verify (EV_P_ W *ws, int cnt) 3195array_verify (EV_P_ W *ws, int cnt)
1988{ 3196{
1989 while (cnt--) 3197 while (cnt--)
1990 { 3198 {
1991 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3199 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
1993 } 3201 }
1994} 3202}
1995#endif 3203#endif
1996 3204
1997#if EV_FEATURE_API 3205#if EV_FEATURE_API
1998void 3206void ecb_cold
1999ev_verify (EV_P) 3207ev_verify (EV_P) EV_NOEXCEPT
2000{ 3208{
2001#if EV_VERIFY 3209#if EV_VERIFY
2002 int i; 3210 int i;
2003 WL w; 3211 WL w, w2;
2004 3212
2005 assert (activecnt >= -1); 3213 assert (activecnt >= -1);
2006 3214
2007 assert (fdchangemax >= fdchangecnt); 3215 assert (fdchangemax >= fdchangecnt);
2008 for (i = 0; i < fdchangecnt; ++i) 3216 for (i = 0; i < fdchangecnt; ++i)
2009 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3217 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
2010 3218
2011 assert (anfdmax >= 0); 3219 assert (anfdmax >= 0);
2012 for (i = 0; i < anfdmax; ++i) 3220 for (i = 0; i < anfdmax; ++i)
3221 {
3222 int j = 0;
3223
2013 for (w = anfds [i].head; w; w = w->next) 3224 for (w = w2 = anfds [i].head; w; w = w->next)
2014 { 3225 {
2015 verify_watcher (EV_A_ (W)w); 3226 verify_watcher (EV_A_ (W)w);
3227
3228 if (j++ & 1)
3229 {
3230 assert (("libev: io watcher list contains a loop", w != w2));
3231 w2 = w2->next;
3232 }
3233
2016 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3234 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
2017 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 3235 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
2018 } 3236 }
3237 }
2019 3238
2020 assert (timermax >= timercnt); 3239 assert (timermax >= timercnt);
2021 verify_heap (EV_A_ timers, timercnt); 3240 verify_heap (EV_A_ timers, timercnt);
2022 3241
2023#if EV_PERIODIC_ENABLE 3242#if EV_PERIODIC_ENABLE
… …
2069#endif 3288#endif
2070} 3289}
2071#endif 3290#endif
2072 3291
2073#if EV_MULTIPLICITY 3292#if EV_MULTIPLICITY
3293ecb_cold
2074struct ev_loop * 3294struct ev_loop *
2075#else 3295#else
2076int 3296int
2077#endif 3297#endif
2078ev_default_loop (unsigned int flags) 3298ev_default_loop (unsigned int flags) EV_NOEXCEPT
2079{ 3299{
2080 if (!ev_default_loop_ptr) 3300 if (!ev_default_loop_ptr)
2081 { 3301 {
2082#if EV_MULTIPLICITY 3302#if EV_MULTIPLICITY
2083 EV_P = ev_default_loop_ptr = &default_loop_struct; 3303 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
2102 3322
2103 return ev_default_loop_ptr; 3323 return ev_default_loop_ptr;
2104} 3324}
2105 3325
2106void 3326void
2107ev_loop_fork (EV_P) 3327ev_loop_fork (EV_P) EV_NOEXCEPT
2108{ 3328{
2109 postfork = 1; /* must be in line with ev_default_fork */ 3329 postfork = 1;
2110} 3330}
2111 3331
2112/*****************************************************************************/ 3332/*****************************************************************************/
2113 3333
2114void 3334void
… …
2116{ 3336{
2117 EV_CB_INVOKE ((W)w, revents); 3337 EV_CB_INVOKE ((W)w, revents);
2118} 3338}
2119 3339
2120unsigned int 3340unsigned int
2121ev_pending_count (EV_P) 3341ev_pending_count (EV_P) EV_NOEXCEPT
2122{ 3342{
2123 int pri; 3343 int pri;
2124 unsigned int count = 0; 3344 unsigned int count = 0;
2125 3345
2126 for (pri = NUMPRI; pri--; ) 3346 for (pri = NUMPRI; pri--; )
2127 count += pendingcnt [pri]; 3347 count += pendingcnt [pri];
2128 3348
2129 return count; 3349 return count;
2130} 3350}
2131 3351
2132void noinline 3352ecb_noinline
3353void
2133ev_invoke_pending (EV_P) 3354ev_invoke_pending (EV_P)
2134{ 3355{
2135 int pri; 3356 pendingpri = NUMPRI;
2136 3357
2137 for (pri = NUMPRI; pri--; ) 3358 do
3359 {
3360 --pendingpri;
3361
3362 /* pendingpri possibly gets modified in the inner loop */
2138 while (pendingcnt [pri]) 3363 while (pendingcnt [pendingpri])
2139 { 3364 {
2140 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3365 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2141 3366
2142 p->w->pending = 0; 3367 p->w->pending = 0;
2143 EV_CB_INVOKE (p->w, p->events); 3368 EV_CB_INVOKE (p->w, p->events);
2144 EV_FREQUENT_CHECK; 3369 EV_FREQUENT_CHECK;
2145 } 3370 }
3371 }
3372 while (pendingpri);
2146} 3373}
2147 3374
2148#if EV_IDLE_ENABLE 3375#if EV_IDLE_ENABLE
2149/* make idle watchers pending. this handles the "call-idle */ 3376/* make idle watchers pending. this handles the "call-idle */
2150/* only when higher priorities are idle" logic */ 3377/* only when higher priorities are idle" logic */
2151inline_size void 3378inline_size void
2152idle_reify (EV_P) 3379idle_reify (EV_P)
2153{ 3380{
2154 if (expect_false (idleall)) 3381 if (ecb_expect_false (idleall))
2155 { 3382 {
2156 int pri; 3383 int pri;
2157 3384
2158 for (pri = NUMPRI; pri--; ) 3385 for (pri = NUMPRI; pri--; )
2159 { 3386 {
… …
2208 } 3435 }
2209} 3436}
2210 3437
2211#if EV_PERIODIC_ENABLE 3438#if EV_PERIODIC_ENABLE
2212 3439
2213inline_speed void 3440ecb_noinline
3441static void
2214periodic_recalc (EV_P_ ev_periodic *w) 3442periodic_recalc (EV_P_ ev_periodic *w)
2215{ 3443{
2216 /* TODO: use slow but potentially more correct incremental algo, */ 3444 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2217 /* also do not rely on ceil */ 3445 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2218 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3446
3447 /* the above almost always errs on the low side */
3448 while (at <= ev_rt_now)
3449 {
3450 ev_tstamp nat = at + w->interval;
3451
3452 /* when resolution fails us, we use ev_rt_now */
3453 if (ecb_expect_false (nat == at))
3454 {
3455 at = ev_rt_now;
3456 break;
3457 }
3458
3459 at = nat;
3460 }
3461
3462 ev_at (w) = at;
2219} 3463}
2220 3464
2221/* make periodics pending */ 3465/* make periodics pending */
2222inline_size void 3466inline_size void
2223periodics_reify (EV_P) 3467periodics_reify (EV_P)
2224{ 3468{
2225 EV_FREQUENT_CHECK; 3469 EV_FREQUENT_CHECK;
2226 3470
2227 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3471 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2228 { 3472 {
2229 int feed_count = 0;
2230
2231 do 3473 do
2232 { 3474 {
2233 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3475 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2234 3476
2235 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3477 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2245 downheap (periodics, periodiccnt, HEAP0); 3487 downheap (periodics, periodiccnt, HEAP0);
2246 } 3488 }
2247 else if (w->interval) 3489 else if (w->interval)
2248 { 3490 {
2249 periodic_recalc (EV_A_ w); 3491 periodic_recalc (EV_A_ w);
2250
2251 /* if next trigger time is not sufficiently in the future, put it there */
2252 /* this might happen because of floating point inexactness */
2253 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2254 {
2255 ev_at (w) += w->interval;
2256
2257 /* if interval is unreasonably low we might still have a time in the past */
2258 /* so correct this. this will make the periodic very inexact, but the user */
2259 /* has effectively asked to get triggered more often than possible */
2260 if (ev_at (w) < ev_rt_now)
2261 ev_at (w) = ev_rt_now;
2262 }
2263
2264 ANHE_at_cache (periodics [HEAP0]); 3492 ANHE_at_cache (periodics [HEAP0]);
2265 downheap (periodics, periodiccnt, HEAP0); 3493 downheap (periodics, periodiccnt, HEAP0);
2266 } 3494 }
2267 else 3495 else
2268 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3496 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2276 } 3504 }
2277} 3505}
2278 3506
2279/* simply recalculate all periodics */ 3507/* simply recalculate all periodics */
2280/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3508/* TODO: maybe ensure that at least one event happens when jumping forward? */
2281static void noinline 3509ecb_noinline ecb_cold
3510static void
2282periodics_reschedule (EV_P) 3511periodics_reschedule (EV_P)
2283{ 3512{
2284 int i; 3513 int i;
2285 3514
2286 /* adjust periodics after time jump */ 3515 /* adjust periodics after time jump */
… …
2299 reheap (periodics, periodiccnt); 3528 reheap (periodics, periodiccnt);
2300} 3529}
2301#endif 3530#endif
2302 3531
2303/* adjust all timers by a given offset */ 3532/* adjust all timers by a given offset */
2304static void noinline 3533ecb_noinline ecb_cold
3534static void
2305timers_reschedule (EV_P_ ev_tstamp adjust) 3535timers_reschedule (EV_P_ ev_tstamp adjust)
2306{ 3536{
2307 int i; 3537 int i;
2308 3538
2309 for (i = 0; i < timercnt; ++i) 3539 for (i = 0; i < timercnt; ++i)
… …
2318/* also detect if there was a timejump, and act accordingly */ 3548/* also detect if there was a timejump, and act accordingly */
2319inline_speed void 3549inline_speed void
2320time_update (EV_P_ ev_tstamp max_block) 3550time_update (EV_P_ ev_tstamp max_block)
2321{ 3551{
2322#if EV_USE_MONOTONIC 3552#if EV_USE_MONOTONIC
2323 if (expect_true (have_monotonic)) 3553 if (ecb_expect_true (have_monotonic))
2324 { 3554 {
2325 int i; 3555 int i;
2326 ev_tstamp odiff = rtmn_diff; 3556 ev_tstamp odiff = rtmn_diff;
2327 3557
2328 mn_now = get_clock (); 3558 mn_now = get_clock ();
2329 3559
2330 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3560 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
2331 /* interpolate in the meantime */ 3561 /* interpolate in the meantime */
2332 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 3562 if (ecb_expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
2333 { 3563 {
2334 ev_rt_now = rtmn_diff + mn_now; 3564 ev_rt_now = rtmn_diff + mn_now;
2335 return; 3565 return;
2336 } 3566 }
2337 3567
… …
2346 * doesn't hurt either as we only do this on time-jumps or 3576 * doesn't hurt either as we only do this on time-jumps or
2347 * in the unlikely event of having been preempted here. 3577 * in the unlikely event of having been preempted here.
2348 */ 3578 */
2349 for (i = 4; --i; ) 3579 for (i = 4; --i; )
2350 { 3580 {
3581 ev_tstamp diff;
2351 rtmn_diff = ev_rt_now - mn_now; 3582 rtmn_diff = ev_rt_now - mn_now;
2352 3583
3584 diff = odiff - rtmn_diff;
3585
2353 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3586 if (ecb_expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2354 return; /* all is well */ 3587 return; /* all is well */
2355 3588
2356 ev_rt_now = ev_time (); 3589 ev_rt_now = ev_time ();
2357 mn_now = get_clock (); 3590 mn_now = get_clock ();
2358 now_floor = mn_now; 3591 now_floor = mn_now;
… …
2367 else 3600 else
2368#endif 3601#endif
2369 { 3602 {
2370 ev_rt_now = ev_time (); 3603 ev_rt_now = ev_time ();
2371 3604
2372 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 3605 if (ecb_expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
2373 { 3606 {
2374 /* adjust timers. this is easy, as the offset is the same for all of them */ 3607 /* adjust timers. this is easy, as the offset is the same for all of them */
2375 timers_reschedule (EV_A_ ev_rt_now - mn_now); 3608 timers_reschedule (EV_A_ ev_rt_now - mn_now);
2376#if EV_PERIODIC_ENABLE 3609#if EV_PERIODIC_ENABLE
2377 periodics_reschedule (EV_A); 3610 periodics_reschedule (EV_A);
… …
2380 3613
2381 mn_now = ev_rt_now; 3614 mn_now = ev_rt_now;
2382 } 3615 }
2383} 3616}
2384 3617
2385void 3618int
2386ev_run (EV_P_ int flags) 3619ev_run (EV_P_ int flags)
2387{ 3620{
2388#if EV_FEATURE_API 3621#if EV_FEATURE_API
2389 ++loop_depth; 3622 ++loop_depth;
2390#endif 3623#endif
… …
2400#if EV_VERIFY >= 2 3633#if EV_VERIFY >= 2
2401 ev_verify (EV_A); 3634 ev_verify (EV_A);
2402#endif 3635#endif
2403 3636
2404#ifndef _WIN32 3637#ifndef _WIN32
2405 if (expect_false (curpid)) /* penalise the forking check even more */ 3638 if (ecb_expect_false (curpid)) /* penalise the forking check even more */
2406 if (expect_false (getpid () != curpid)) 3639 if (ecb_expect_false (getpid () != curpid))
2407 { 3640 {
2408 curpid = getpid (); 3641 curpid = getpid ();
2409 postfork = 1; 3642 postfork = 1;
2410 } 3643 }
2411#endif 3644#endif
2412 3645
2413#if EV_FORK_ENABLE 3646#if EV_FORK_ENABLE
2414 /* we might have forked, so queue fork handlers */ 3647 /* we might have forked, so queue fork handlers */
2415 if (expect_false (postfork)) 3648 if (ecb_expect_false (postfork))
2416 if (forkcnt) 3649 if (forkcnt)
2417 { 3650 {
2418 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3651 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2419 EV_INVOKE_PENDING; 3652 EV_INVOKE_PENDING;
2420 } 3653 }
2421#endif 3654#endif
2422 3655
2423#if EV_PREPARE_ENABLE 3656#if EV_PREPARE_ENABLE
2424 /* queue prepare watchers (and execute them) */ 3657 /* queue prepare watchers (and execute them) */
2425 if (expect_false (preparecnt)) 3658 if (ecb_expect_false (preparecnt))
2426 { 3659 {
2427 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3660 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2428 EV_INVOKE_PENDING; 3661 EV_INVOKE_PENDING;
2429 } 3662 }
2430#endif 3663#endif
2431 3664
2432 if (expect_false (loop_done)) 3665 if (ecb_expect_false (loop_done))
2433 break; 3666 break;
2434 3667
2435 /* we might have forked, so reify kernel state if necessary */ 3668 /* we might have forked, so reify kernel state if necessary */
2436 if (expect_false (postfork)) 3669 if (ecb_expect_false (postfork))
2437 loop_fork (EV_A); 3670 loop_fork (EV_A);
2438 3671
2439 /* update fd-related kernel structures */ 3672 /* update fd-related kernel structures */
2440 fd_reify (EV_A); 3673 fd_reify (EV_A);
2441 3674
… …
2448 ev_tstamp prev_mn_now = mn_now; 3681 ev_tstamp prev_mn_now = mn_now;
2449 3682
2450 /* update time to cancel out callback processing overhead */ 3683 /* update time to cancel out callback processing overhead */
2451 time_update (EV_A_ 1e100); 3684 time_update (EV_A_ 1e100);
2452 3685
3686 /* from now on, we want a pipe-wake-up */
3687 pipe_write_wanted = 1;
3688
3689 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3690
2453 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt))) 3691 if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2454 { 3692 {
2455 waittime = MAX_BLOCKTIME; 3693 waittime = MAX_BLOCKTIME;
2456 3694
2457 if (timercnt) 3695 if (timercnt)
2458 { 3696 {
2459 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3697 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2460 if (waittime > to) waittime = to; 3698 if (waittime > to) waittime = to;
2461 } 3699 }
2462 3700
2463#if EV_PERIODIC_ENABLE 3701#if EV_PERIODIC_ENABLE
2464 if (periodiccnt) 3702 if (periodiccnt)
2465 { 3703 {
2466 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3704 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2467 if (waittime > to) waittime = to; 3705 if (waittime > to) waittime = to;
2468 } 3706 }
2469#endif 3707#endif
2470 3708
2471 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3709 /* don't let timeouts decrease the waittime below timeout_blocktime */
2472 if (expect_false (waittime < timeout_blocktime)) 3710 if (ecb_expect_false (waittime < timeout_blocktime))
2473 waittime = timeout_blocktime; 3711 waittime = timeout_blocktime;
2474 3712
3713 /* at this point, we NEED to wait, so we have to ensure */
3714 /* to pass a minimum nonzero value to the backend */
3715 if (ecb_expect_false (waittime < backend_mintime))
3716 waittime = backend_mintime;
3717
2475 /* extra check because io_blocktime is commonly 0 */ 3718 /* extra check because io_blocktime is commonly 0 */
2476 if (expect_false (io_blocktime)) 3719 if (ecb_expect_false (io_blocktime))
2477 { 3720 {
2478 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3721 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2479 3722
2480 if (sleeptime > waittime - backend_fudge) 3723 if (sleeptime > waittime - backend_mintime)
2481 sleeptime = waittime - backend_fudge; 3724 sleeptime = waittime - backend_mintime;
2482 3725
2483 if (expect_true (sleeptime > 0.)) 3726 if (ecb_expect_true (sleeptime > 0.))
2484 { 3727 {
2485 ev_sleep (sleeptime); 3728 ev_sleep (sleeptime);
2486 waittime -= sleeptime; 3729 waittime -= sleeptime;
2487 } 3730 }
2488 } 3731 }
… …
2493#endif 3736#endif
2494 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */ 3737 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2495 backend_poll (EV_A_ waittime); 3738 backend_poll (EV_A_ waittime);
2496 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 3739 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2497 3740
3741 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3742
3743 ECB_MEMORY_FENCE_ACQUIRE;
3744 if (pipe_write_skipped)
3745 {
3746 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3747 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3748 }
3749
2498 /* update ev_rt_now, do magic */ 3750 /* update ev_rt_now, do magic */
2499 time_update (EV_A_ waittime + sleeptime); 3751 time_update (EV_A_ waittime + sleeptime);
2500 } 3752 }
2501 3753
2502 /* queue pending timers and reschedule them */ 3754 /* queue pending timers and reschedule them */
… …
2510 idle_reify (EV_A); 3762 idle_reify (EV_A);
2511#endif 3763#endif
2512 3764
2513#if EV_CHECK_ENABLE 3765#if EV_CHECK_ENABLE
2514 /* queue check watchers, to be executed first */ 3766 /* queue check watchers, to be executed first */
2515 if (expect_false (checkcnt)) 3767 if (ecb_expect_false (checkcnt))
2516 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3768 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2517#endif 3769#endif
2518 3770
2519 EV_INVOKE_PENDING; 3771 EV_INVOKE_PENDING;
2520 } 3772 }
2521 while (expect_true ( 3773 while (ecb_expect_true (
2522 activecnt 3774 activecnt
2523 && !loop_done 3775 && !loop_done
2524 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT)) 3776 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2525 )); 3777 ));
2526 3778
… …
2528 loop_done = EVBREAK_CANCEL; 3780 loop_done = EVBREAK_CANCEL;
2529 3781
2530#if EV_FEATURE_API 3782#if EV_FEATURE_API
2531 --loop_depth; 3783 --loop_depth;
2532#endif 3784#endif
2533}
2534 3785
3786 return activecnt;
3787}
3788
2535void 3789void
2536ev_break (EV_P_ int how) 3790ev_break (EV_P_ int how) EV_NOEXCEPT
2537{ 3791{
2538 loop_done = how; 3792 loop_done = how;
2539} 3793}
2540 3794
2541void 3795void
2542ev_ref (EV_P) 3796ev_ref (EV_P) EV_NOEXCEPT
2543{ 3797{
2544 ++activecnt; 3798 ++activecnt;
2545} 3799}
2546 3800
2547void 3801void
2548ev_unref (EV_P) 3802ev_unref (EV_P) EV_NOEXCEPT
2549{ 3803{
2550 --activecnt; 3804 --activecnt;
2551} 3805}
2552 3806
2553void 3807void
2554ev_now_update (EV_P) 3808ev_now_update (EV_P) EV_NOEXCEPT
2555{ 3809{
2556 time_update (EV_A_ 1e100); 3810 time_update (EV_A_ 1e100);
2557} 3811}
2558 3812
2559void 3813void
2560ev_suspend (EV_P) 3814ev_suspend (EV_P) EV_NOEXCEPT
2561{ 3815{
2562 ev_now_update (EV_A); 3816 ev_now_update (EV_A);
2563} 3817}
2564 3818
2565void 3819void
2566ev_resume (EV_P) 3820ev_resume (EV_P) EV_NOEXCEPT
2567{ 3821{
2568 ev_tstamp mn_prev = mn_now; 3822 ev_tstamp mn_prev = mn_now;
2569 3823
2570 ev_now_update (EV_A); 3824 ev_now_update (EV_A);
2571 timers_reschedule (EV_A_ mn_now - mn_prev); 3825 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2588inline_size void 3842inline_size void
2589wlist_del (WL *head, WL elem) 3843wlist_del (WL *head, WL elem)
2590{ 3844{
2591 while (*head) 3845 while (*head)
2592 { 3846 {
2593 if (expect_true (*head == elem)) 3847 if (ecb_expect_true (*head == elem))
2594 { 3848 {
2595 *head = elem->next; 3849 *head = elem->next;
2596 break; 3850 break;
2597 } 3851 }
2598 3852
… …
2610 w->pending = 0; 3864 w->pending = 0;
2611 } 3865 }
2612} 3866}
2613 3867
2614int 3868int
2615ev_clear_pending (EV_P_ void *w) 3869ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
2616{ 3870{
2617 W w_ = (W)w; 3871 W w_ = (W)w;
2618 int pending = w_->pending; 3872 int pending = w_->pending;
2619 3873
2620 if (expect_true (pending)) 3874 if (ecb_expect_true (pending))
2621 { 3875 {
2622 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 3876 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2623 p->w = (W)&pending_w; 3877 p->w = (W)&pending_w;
2624 w_->pending = 0; 3878 w_->pending = 0;
2625 return p->events; 3879 return p->events;
… …
2652 w->active = 0; 3906 w->active = 0;
2653} 3907}
2654 3908
2655/*****************************************************************************/ 3909/*****************************************************************************/
2656 3910
2657void noinline 3911ecb_noinline
3912void
2658ev_io_start (EV_P_ ev_io *w) 3913ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
2659{ 3914{
2660 int fd = w->fd; 3915 int fd = w->fd;
2661 3916
2662 if (expect_false (ev_is_active (w))) 3917 if (ecb_expect_false (ev_is_active (w)))
2663 return; 3918 return;
2664 3919
2665 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 3920 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2666 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 3921 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2667 3922
3923#if EV_VERIFY >= 2
3924 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
3925#endif
2668 EV_FREQUENT_CHECK; 3926 EV_FREQUENT_CHECK;
2669 3927
2670 ev_start (EV_A_ (W)w, 1); 3928 ev_start (EV_A_ (W)w, 1);
2671 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3929 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
2672 wlist_add (&anfds[fd].head, (WL)w); 3930 wlist_add (&anfds[fd].head, (WL)w);
3931
3932 /* common bug, apparently */
3933 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
2673 3934
2674 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3935 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2675 w->events &= ~EV__IOFDSET; 3936 w->events &= ~EV__IOFDSET;
2676 3937
2677 EV_FREQUENT_CHECK; 3938 EV_FREQUENT_CHECK;
2678} 3939}
2679 3940
2680void noinline 3941ecb_noinline
3942void
2681ev_io_stop (EV_P_ ev_io *w) 3943ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
2682{ 3944{
2683 clear_pending (EV_A_ (W)w); 3945 clear_pending (EV_A_ (W)w);
2684 if (expect_false (!ev_is_active (w))) 3946 if (ecb_expect_false (!ev_is_active (w)))
2685 return; 3947 return;
2686 3948
2687 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 3949 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2688 3950
3951#if EV_VERIFY >= 2
3952 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
3953#endif
2689 EV_FREQUENT_CHECK; 3954 EV_FREQUENT_CHECK;
2690 3955
2691 wlist_del (&anfds[w->fd].head, (WL)w); 3956 wlist_del (&anfds[w->fd].head, (WL)w);
2692 ev_stop (EV_A_ (W)w); 3957 ev_stop (EV_A_ (W)w);
2693 3958
2694 fd_change (EV_A_ w->fd, EV_ANFD_REIFY); 3959 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2695 3960
2696 EV_FREQUENT_CHECK; 3961 EV_FREQUENT_CHECK;
2697} 3962}
2698 3963
2699void noinline 3964ecb_noinline
3965void
2700ev_timer_start (EV_P_ ev_timer *w) 3966ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
2701{ 3967{
2702 if (expect_false (ev_is_active (w))) 3968 if (ecb_expect_false (ev_is_active (w)))
2703 return; 3969 return;
2704 3970
2705 ev_at (w) += mn_now; 3971 ev_at (w) += mn_now;
2706 3972
2707 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 3973 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2708 3974
2709 EV_FREQUENT_CHECK; 3975 EV_FREQUENT_CHECK;
2710 3976
2711 ++timercnt; 3977 ++timercnt;
2712 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 3978 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
2713 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 3979 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
2714 ANHE_w (timers [ev_active (w)]) = (WT)w; 3980 ANHE_w (timers [ev_active (w)]) = (WT)w;
2715 ANHE_at_cache (timers [ev_active (w)]); 3981 ANHE_at_cache (timers [ev_active (w)]);
2716 upheap (timers, ev_active (w)); 3982 upheap (timers, ev_active (w));
2717 3983
2718 EV_FREQUENT_CHECK; 3984 EV_FREQUENT_CHECK;
2719 3985
2720 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3986 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2721} 3987}
2722 3988
2723void noinline 3989ecb_noinline
3990void
2724ev_timer_stop (EV_P_ ev_timer *w) 3991ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
2725{ 3992{
2726 clear_pending (EV_A_ (W)w); 3993 clear_pending (EV_A_ (W)w);
2727 if (expect_false (!ev_is_active (w))) 3994 if (ecb_expect_false (!ev_is_active (w)))
2728 return; 3995 return;
2729 3996
2730 EV_FREQUENT_CHECK; 3997 EV_FREQUENT_CHECK;
2731 3998
2732 { 3999 {
… …
2734 4001
2735 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 4002 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2736 4003
2737 --timercnt; 4004 --timercnt;
2738 4005
2739 if (expect_true (active < timercnt + HEAP0)) 4006 if (ecb_expect_true (active < timercnt + HEAP0))
2740 { 4007 {
2741 timers [active] = timers [timercnt + HEAP0]; 4008 timers [active] = timers [timercnt + HEAP0];
2742 adjustheap (timers, timercnt, active); 4009 adjustheap (timers, timercnt, active);
2743 } 4010 }
2744 } 4011 }
… …
2748 ev_stop (EV_A_ (W)w); 4015 ev_stop (EV_A_ (W)w);
2749 4016
2750 EV_FREQUENT_CHECK; 4017 EV_FREQUENT_CHECK;
2751} 4018}
2752 4019
2753void noinline 4020ecb_noinline
4021void
2754ev_timer_again (EV_P_ ev_timer *w) 4022ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
2755{ 4023{
2756 EV_FREQUENT_CHECK; 4024 EV_FREQUENT_CHECK;
4025
4026 clear_pending (EV_A_ (W)w);
2757 4027
2758 if (ev_is_active (w)) 4028 if (ev_is_active (w))
2759 { 4029 {
2760 if (w->repeat) 4030 if (w->repeat)
2761 { 4031 {
… …
2774 4044
2775 EV_FREQUENT_CHECK; 4045 EV_FREQUENT_CHECK;
2776} 4046}
2777 4047
2778ev_tstamp 4048ev_tstamp
2779ev_timer_remaining (EV_P_ ev_timer *w) 4049ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
2780{ 4050{
2781 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4051 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2782} 4052}
2783 4053
2784#if EV_PERIODIC_ENABLE 4054#if EV_PERIODIC_ENABLE
2785void noinline 4055ecb_noinline
4056void
2786ev_periodic_start (EV_P_ ev_periodic *w) 4057ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
2787{ 4058{
2788 if (expect_false (ev_is_active (w))) 4059 if (ecb_expect_false (ev_is_active (w)))
2789 return; 4060 return;
2790 4061
2791 if (w->reschedule_cb) 4062 if (w->reschedule_cb)
2792 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4063 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2793 else if (w->interval) 4064 else if (w->interval)
… …
2800 4071
2801 EV_FREQUENT_CHECK; 4072 EV_FREQUENT_CHECK;
2802 4073
2803 ++periodiccnt; 4074 ++periodiccnt;
2804 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4075 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2805 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4076 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
2806 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4077 ANHE_w (periodics [ev_active (w)]) = (WT)w;
2807 ANHE_at_cache (periodics [ev_active (w)]); 4078 ANHE_at_cache (periodics [ev_active (w)]);
2808 upheap (periodics, ev_active (w)); 4079 upheap (periodics, ev_active (w));
2809 4080
2810 EV_FREQUENT_CHECK; 4081 EV_FREQUENT_CHECK;
2811 4082
2812 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4083 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2813} 4084}
2814 4085
2815void noinline 4086ecb_noinline
4087void
2816ev_periodic_stop (EV_P_ ev_periodic *w) 4088ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
2817{ 4089{
2818 clear_pending (EV_A_ (W)w); 4090 clear_pending (EV_A_ (W)w);
2819 if (expect_false (!ev_is_active (w))) 4091 if (ecb_expect_false (!ev_is_active (w)))
2820 return; 4092 return;
2821 4093
2822 EV_FREQUENT_CHECK; 4094 EV_FREQUENT_CHECK;
2823 4095
2824 { 4096 {
… …
2826 4098
2827 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 4099 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2828 4100
2829 --periodiccnt; 4101 --periodiccnt;
2830 4102
2831 if (expect_true (active < periodiccnt + HEAP0)) 4103 if (ecb_expect_true (active < periodiccnt + HEAP0))
2832 { 4104 {
2833 periodics [active] = periodics [periodiccnt + HEAP0]; 4105 periodics [active] = periodics [periodiccnt + HEAP0];
2834 adjustheap (periodics, periodiccnt, active); 4106 adjustheap (periodics, periodiccnt, active);
2835 } 4107 }
2836 } 4108 }
… …
2838 ev_stop (EV_A_ (W)w); 4110 ev_stop (EV_A_ (W)w);
2839 4111
2840 EV_FREQUENT_CHECK; 4112 EV_FREQUENT_CHECK;
2841} 4113}
2842 4114
2843void noinline 4115ecb_noinline
4116void
2844ev_periodic_again (EV_P_ ev_periodic *w) 4117ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
2845{ 4118{
2846 /* TODO: use adjustheap and recalculation */ 4119 /* TODO: use adjustheap and recalculation */
2847 ev_periodic_stop (EV_A_ w); 4120 ev_periodic_stop (EV_A_ w);
2848 ev_periodic_start (EV_A_ w); 4121 ev_periodic_start (EV_A_ w);
2849} 4122}
… …
2853# define SA_RESTART 0 4126# define SA_RESTART 0
2854#endif 4127#endif
2855 4128
2856#if EV_SIGNAL_ENABLE 4129#if EV_SIGNAL_ENABLE
2857 4130
2858void noinline 4131ecb_noinline
4132void
2859ev_signal_start (EV_P_ ev_signal *w) 4133ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
2860{ 4134{
2861 if (expect_false (ev_is_active (w))) 4135 if (ecb_expect_false (ev_is_active (w)))
2862 return; 4136 return;
2863 4137
2864 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4138 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2865 4139
2866#if EV_MULTIPLICITY 4140#if EV_MULTIPLICITY
2867 assert (("libev: a signal must not be attached to two different loops", 4141 assert (("libev: a signal must not be attached to two different loops",
2868 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4142 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2869 4143
2870 signals [w->signum - 1].loop = EV_A; 4144 signals [w->signum - 1].loop = EV_A;
4145 ECB_MEMORY_FENCE_RELEASE;
2871#endif 4146#endif
2872 4147
2873 EV_FREQUENT_CHECK; 4148 EV_FREQUENT_CHECK;
2874 4149
2875#if EV_USE_SIGNALFD 4150#if EV_USE_SIGNALFD
… …
2934 } 4209 }
2935 4210
2936 EV_FREQUENT_CHECK; 4211 EV_FREQUENT_CHECK;
2937} 4212}
2938 4213
2939void noinline 4214ecb_noinline
4215void
2940ev_signal_stop (EV_P_ ev_signal *w) 4216ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
2941{ 4217{
2942 clear_pending (EV_A_ (W)w); 4218 clear_pending (EV_A_ (W)w);
2943 if (expect_false (!ev_is_active (w))) 4219 if (ecb_expect_false (!ev_is_active (w)))
2944 return; 4220 return;
2945 4221
2946 EV_FREQUENT_CHECK; 4222 EV_FREQUENT_CHECK;
2947 4223
2948 wlist_del (&signals [w->signum - 1].head, (WL)w); 4224 wlist_del (&signals [w->signum - 1].head, (WL)w);
… …
2976#endif 4252#endif
2977 4253
2978#if EV_CHILD_ENABLE 4254#if EV_CHILD_ENABLE
2979 4255
2980void 4256void
2981ev_child_start (EV_P_ ev_child *w) 4257ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
2982{ 4258{
2983#if EV_MULTIPLICITY 4259#if EV_MULTIPLICITY
2984 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4260 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2985#endif 4261#endif
2986 if (expect_false (ev_is_active (w))) 4262 if (ecb_expect_false (ev_is_active (w)))
2987 return; 4263 return;
2988 4264
2989 EV_FREQUENT_CHECK; 4265 EV_FREQUENT_CHECK;
2990 4266
2991 ev_start (EV_A_ (W)w, 1); 4267 ev_start (EV_A_ (W)w, 1);
… …
2993 4269
2994 EV_FREQUENT_CHECK; 4270 EV_FREQUENT_CHECK;
2995} 4271}
2996 4272
2997void 4273void
2998ev_child_stop (EV_P_ ev_child *w) 4274ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
2999{ 4275{
3000 clear_pending (EV_A_ (W)w); 4276 clear_pending (EV_A_ (W)w);
3001 if (expect_false (!ev_is_active (w))) 4277 if (ecb_expect_false (!ev_is_active (w)))
3002 return; 4278 return;
3003 4279
3004 EV_FREQUENT_CHECK; 4280 EV_FREQUENT_CHECK;
3005 4281
3006 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w); 4282 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
… …
3020 4296
3021#define DEF_STAT_INTERVAL 5.0074891 4297#define DEF_STAT_INTERVAL 5.0074891
3022#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4298#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
3023#define MIN_STAT_INTERVAL 0.1074891 4299#define MIN_STAT_INTERVAL 0.1074891
3024 4300
3025static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4301ecb_noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
3026 4302
3027#if EV_USE_INOTIFY 4303#if EV_USE_INOTIFY
3028 4304
3029/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ 4305/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3030# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4306# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3031 4307
3032static void noinline 4308ecb_noinline
4309static void
3033infy_add (EV_P_ ev_stat *w) 4310infy_add (EV_P_ ev_stat *w)
3034{ 4311{
3035 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); 4312 w->wd = inotify_add_watch (fs_fd, w->path,
4313 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4314 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4315 | IN_DONT_FOLLOW | IN_MASK_ADD);
3036 4316
3037 if (w->wd >= 0) 4317 if (w->wd >= 0)
3038 { 4318 {
3039 struct statfs sfs; 4319 struct statfs sfs;
3040 4320
… …
3044 4324
3045 if (!fs_2625) 4325 if (!fs_2625)
3046 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4326 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3047 else if (!statfs (w->path, &sfs) 4327 else if (!statfs (w->path, &sfs)
3048 && (sfs.f_type == 0x1373 /* devfs */ 4328 && (sfs.f_type == 0x1373 /* devfs */
4329 || sfs.f_type == 0x4006 /* fat */
4330 || sfs.f_type == 0x4d44 /* msdos */
3049 || sfs.f_type == 0xEF53 /* ext2/3 */ 4331 || sfs.f_type == 0xEF53 /* ext2/3 */
4332 || sfs.f_type == 0x72b6 /* jffs2 */
4333 || sfs.f_type == 0x858458f6 /* ramfs */
4334 || sfs.f_type == 0x5346544e /* ntfs */
3050 || sfs.f_type == 0x3153464a /* jfs */ 4335 || sfs.f_type == 0x3153464a /* jfs */
4336 || sfs.f_type == 0x9123683e /* btrfs */
3051 || sfs.f_type == 0x52654973 /* reiser3 */ 4337 || sfs.f_type == 0x52654973 /* reiser3 */
3052 || sfs.f_type == 0x01021994 /* tempfs */ 4338 || sfs.f_type == 0x01021994 /* tmpfs */
3053 || sfs.f_type == 0x58465342 /* xfs */)) 4339 || sfs.f_type == 0x58465342 /* xfs */))
3054 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4340 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3055 else 4341 else
3056 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4342 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
3057 } 4343 }
… …
3078 if (!pend || pend == path) 4364 if (!pend || pend == path)
3079 break; 4365 break;
3080 4366
3081 *pend = 0; 4367 *pend = 0;
3082 w->wd = inotify_add_watch (fs_fd, path, mask); 4368 w->wd = inotify_add_watch (fs_fd, path, mask);
3083 } 4369 }
3084 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 4370 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
3085 } 4371 }
3086 } 4372 }
3087 4373
3088 if (w->wd >= 0) 4374 if (w->wd >= 0)
… …
3092 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4378 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3093 ev_timer_again (EV_A_ &w->timer); 4379 ev_timer_again (EV_A_ &w->timer);
3094 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4380 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3095} 4381}
3096 4382
3097static void noinline 4383ecb_noinline
4384static void
3098infy_del (EV_P_ ev_stat *w) 4385infy_del (EV_P_ ev_stat *w)
3099{ 4386{
3100 int slot; 4387 int slot;
3101 int wd = w->wd; 4388 int wd = w->wd;
3102 4389
… …
3109 4396
3110 /* remove this watcher, if others are watching it, they will rearm */ 4397 /* remove this watcher, if others are watching it, they will rearm */
3111 inotify_rm_watch (fs_fd, wd); 4398 inotify_rm_watch (fs_fd, wd);
3112} 4399}
3113 4400
3114static void noinline 4401ecb_noinline
4402static void
3115infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4403infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
3116{ 4404{
3117 if (slot < 0) 4405 if (slot < 0)
3118 /* overflow, need to check for all hash slots */ 4406 /* overflow, need to check for all hash slots */
3119 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4407 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
3155 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4443 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3156 ofs += sizeof (struct inotify_event) + ev->len; 4444 ofs += sizeof (struct inotify_event) + ev->len;
3157 } 4445 }
3158} 4446}
3159 4447
3160inline_size void 4448inline_size ecb_cold
4449void
3161ev_check_2625 (EV_P) 4450ev_check_2625 (EV_P)
3162{ 4451{
3163 /* kernels < 2.6.25 are borked 4452 /* kernels < 2.6.25 are borked
3164 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4453 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3165 */ 4454 */
… …
3170} 4459}
3171 4460
3172inline_size int 4461inline_size int
3173infy_newfd (void) 4462infy_newfd (void)
3174{ 4463{
3175#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4464#if defined IN_CLOEXEC && defined IN_NONBLOCK
3176 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4465 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3177 if (fd >= 0) 4466 if (fd >= 0)
3178 return fd; 4467 return fd;
3179#endif 4468#endif
3180 return inotify_init (); 4469 return inotify_init ();
… …
3255#else 4544#else
3256# define EV_LSTAT(p,b) lstat (p, b) 4545# define EV_LSTAT(p,b) lstat (p, b)
3257#endif 4546#endif
3258 4547
3259void 4548void
3260ev_stat_stat (EV_P_ ev_stat *w) 4549ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
3261{ 4550{
3262 if (lstat (w->path, &w->attr) < 0) 4551 if (lstat (w->path, &w->attr) < 0)
3263 w->attr.st_nlink = 0; 4552 w->attr.st_nlink = 0;
3264 else if (!w->attr.st_nlink) 4553 else if (!w->attr.st_nlink)
3265 w->attr.st_nlink = 1; 4554 w->attr.st_nlink = 1;
3266} 4555}
3267 4556
3268static void noinline 4557ecb_noinline
4558static void
3269stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4559stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3270{ 4560{
3271 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4561 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3272 4562
3273 ev_statdata prev = w->attr; 4563 ev_statdata prev = w->attr;
… …
3304 ev_feed_event (EV_A_ w, EV_STAT); 4594 ev_feed_event (EV_A_ w, EV_STAT);
3305 } 4595 }
3306} 4596}
3307 4597
3308void 4598void
3309ev_stat_start (EV_P_ ev_stat *w) 4599ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
3310{ 4600{
3311 if (expect_false (ev_is_active (w))) 4601 if (ecb_expect_false (ev_is_active (w)))
3312 return; 4602 return;
3313 4603
3314 ev_stat_stat (EV_A_ w); 4604 ev_stat_stat (EV_A_ w);
3315 4605
3316 if (w->interval < MIN_STAT_INTERVAL && w->interval) 4606 if (w->interval < MIN_STAT_INTERVAL && w->interval)
… …
3335 4625
3336 EV_FREQUENT_CHECK; 4626 EV_FREQUENT_CHECK;
3337} 4627}
3338 4628
3339void 4629void
3340ev_stat_stop (EV_P_ ev_stat *w) 4630ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
3341{ 4631{
3342 clear_pending (EV_A_ (W)w); 4632 clear_pending (EV_A_ (W)w);
3343 if (expect_false (!ev_is_active (w))) 4633 if (ecb_expect_false (!ev_is_active (w)))
3344 return; 4634 return;
3345 4635
3346 EV_FREQUENT_CHECK; 4636 EV_FREQUENT_CHECK;
3347 4637
3348#if EV_USE_INOTIFY 4638#if EV_USE_INOTIFY
… …
3361} 4651}
3362#endif 4652#endif
3363 4653
3364#if EV_IDLE_ENABLE 4654#if EV_IDLE_ENABLE
3365void 4655void
3366ev_idle_start (EV_P_ ev_idle *w) 4656ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
3367{ 4657{
3368 if (expect_false (ev_is_active (w))) 4658 if (ecb_expect_false (ev_is_active (w)))
3369 return; 4659 return;
3370 4660
3371 pri_adjust (EV_A_ (W)w); 4661 pri_adjust (EV_A_ (W)w);
3372 4662
3373 EV_FREQUENT_CHECK; 4663 EV_FREQUENT_CHECK;
… …
3376 int active = ++idlecnt [ABSPRI (w)]; 4666 int active = ++idlecnt [ABSPRI (w)];
3377 4667
3378 ++idleall; 4668 ++idleall;
3379 ev_start (EV_A_ (W)w, active); 4669 ev_start (EV_A_ (W)w, active);
3380 4670
3381 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 4671 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
3382 idles [ABSPRI (w)][active - 1] = w; 4672 idles [ABSPRI (w)][active - 1] = w;
3383 } 4673 }
3384 4674
3385 EV_FREQUENT_CHECK; 4675 EV_FREQUENT_CHECK;
3386} 4676}
3387 4677
3388void 4678void
3389ev_idle_stop (EV_P_ ev_idle *w) 4679ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
3390{ 4680{
3391 clear_pending (EV_A_ (W)w); 4681 clear_pending (EV_A_ (W)w);
3392 if (expect_false (!ev_is_active (w))) 4682 if (ecb_expect_false (!ev_is_active (w)))
3393 return; 4683 return;
3394 4684
3395 EV_FREQUENT_CHECK; 4685 EV_FREQUENT_CHECK;
3396 4686
3397 { 4687 {
… …
3408} 4698}
3409#endif 4699#endif
3410 4700
3411#if EV_PREPARE_ENABLE 4701#if EV_PREPARE_ENABLE
3412void 4702void
3413ev_prepare_start (EV_P_ ev_prepare *w) 4703ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
3414{ 4704{
3415 if (expect_false (ev_is_active (w))) 4705 if (ecb_expect_false (ev_is_active (w)))
3416 return; 4706 return;
3417 4707
3418 EV_FREQUENT_CHECK; 4708 EV_FREQUENT_CHECK;
3419 4709
3420 ev_start (EV_A_ (W)w, ++preparecnt); 4710 ev_start (EV_A_ (W)w, ++preparecnt);
3421 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4711 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
3422 prepares [preparecnt - 1] = w; 4712 prepares [preparecnt - 1] = w;
3423 4713
3424 EV_FREQUENT_CHECK; 4714 EV_FREQUENT_CHECK;
3425} 4715}
3426 4716
3427void 4717void
3428ev_prepare_stop (EV_P_ ev_prepare *w) 4718ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
3429{ 4719{
3430 clear_pending (EV_A_ (W)w); 4720 clear_pending (EV_A_ (W)w);
3431 if (expect_false (!ev_is_active (w))) 4721 if (ecb_expect_false (!ev_is_active (w)))
3432 return; 4722 return;
3433 4723
3434 EV_FREQUENT_CHECK; 4724 EV_FREQUENT_CHECK;
3435 4725
3436 { 4726 {
… …
3446} 4736}
3447#endif 4737#endif
3448 4738
3449#if EV_CHECK_ENABLE 4739#if EV_CHECK_ENABLE
3450void 4740void
3451ev_check_start (EV_P_ ev_check *w) 4741ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
3452{ 4742{
3453 if (expect_false (ev_is_active (w))) 4743 if (ecb_expect_false (ev_is_active (w)))
3454 return; 4744 return;
3455 4745
3456 EV_FREQUENT_CHECK; 4746 EV_FREQUENT_CHECK;
3457 4747
3458 ev_start (EV_A_ (W)w, ++checkcnt); 4748 ev_start (EV_A_ (W)w, ++checkcnt);
3459 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 4749 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
3460 checks [checkcnt - 1] = w; 4750 checks [checkcnt - 1] = w;
3461 4751
3462 EV_FREQUENT_CHECK; 4752 EV_FREQUENT_CHECK;
3463} 4753}
3464 4754
3465void 4755void
3466ev_check_stop (EV_P_ ev_check *w) 4756ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
3467{ 4757{
3468 clear_pending (EV_A_ (W)w); 4758 clear_pending (EV_A_ (W)w);
3469 if (expect_false (!ev_is_active (w))) 4759 if (ecb_expect_false (!ev_is_active (w)))
3470 return; 4760 return;
3471 4761
3472 EV_FREQUENT_CHECK; 4762 EV_FREQUENT_CHECK;
3473 4763
3474 { 4764 {
… …
3483 EV_FREQUENT_CHECK; 4773 EV_FREQUENT_CHECK;
3484} 4774}
3485#endif 4775#endif
3486 4776
3487#if EV_EMBED_ENABLE 4777#if EV_EMBED_ENABLE
3488void noinline 4778ecb_noinline
4779void
3489ev_embed_sweep (EV_P_ ev_embed *w) 4780ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
3490{ 4781{
3491 ev_run (w->other, EVRUN_NOWAIT); 4782 ev_run (w->other, EVRUN_NOWAIT);
3492} 4783}
3493 4784
3494static void 4785static void
… …
3542 ev_idle_stop (EV_A_ idle); 4833 ev_idle_stop (EV_A_ idle);
3543} 4834}
3544#endif 4835#endif
3545 4836
3546void 4837void
3547ev_embed_start (EV_P_ ev_embed *w) 4838ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
3548{ 4839{
3549 if (expect_false (ev_is_active (w))) 4840 if (ecb_expect_false (ev_is_active (w)))
3550 return; 4841 return;
3551 4842
3552 { 4843 {
3553 EV_P = w->other; 4844 EV_P = w->other;
3554 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4845 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
… …
3573 4864
3574 EV_FREQUENT_CHECK; 4865 EV_FREQUENT_CHECK;
3575} 4866}
3576 4867
3577void 4868void
3578ev_embed_stop (EV_P_ ev_embed *w) 4869ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
3579{ 4870{
3580 clear_pending (EV_A_ (W)w); 4871 clear_pending (EV_A_ (W)w);
3581 if (expect_false (!ev_is_active (w))) 4872 if (ecb_expect_false (!ev_is_active (w)))
3582 return; 4873 return;
3583 4874
3584 EV_FREQUENT_CHECK; 4875 EV_FREQUENT_CHECK;
3585 4876
3586 ev_io_stop (EV_A_ &w->io); 4877 ev_io_stop (EV_A_ &w->io);
… …
3593} 4884}
3594#endif 4885#endif
3595 4886
3596#if EV_FORK_ENABLE 4887#if EV_FORK_ENABLE
3597void 4888void
3598ev_fork_start (EV_P_ ev_fork *w) 4889ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
3599{ 4890{
3600 if (expect_false (ev_is_active (w))) 4891 if (ecb_expect_false (ev_is_active (w)))
3601 return; 4892 return;
3602 4893
3603 EV_FREQUENT_CHECK; 4894 EV_FREQUENT_CHECK;
3604 4895
3605 ev_start (EV_A_ (W)w, ++forkcnt); 4896 ev_start (EV_A_ (W)w, ++forkcnt);
3606 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 4897 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
3607 forks [forkcnt - 1] = w; 4898 forks [forkcnt - 1] = w;
3608 4899
3609 EV_FREQUENT_CHECK; 4900 EV_FREQUENT_CHECK;
3610} 4901}
3611 4902
3612void 4903void
3613ev_fork_stop (EV_P_ ev_fork *w) 4904ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
3614{ 4905{
3615 clear_pending (EV_A_ (W)w); 4906 clear_pending (EV_A_ (W)w);
3616 if (expect_false (!ev_is_active (w))) 4907 if (ecb_expect_false (!ev_is_active (w)))
3617 return; 4908 return;
3618 4909
3619 EV_FREQUENT_CHECK; 4910 EV_FREQUENT_CHECK;
3620 4911
3621 { 4912 {
… …
3631} 4922}
3632#endif 4923#endif
3633 4924
3634#if EV_CLEANUP_ENABLE 4925#if EV_CLEANUP_ENABLE
3635void 4926void
3636ev_cleanup_start (EV_P_ ev_cleanup *w) 4927ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
3637{ 4928{
3638 if (expect_false (ev_is_active (w))) 4929 if (ecb_expect_false (ev_is_active (w)))
3639 return; 4930 return;
3640 4931
3641 EV_FREQUENT_CHECK; 4932 EV_FREQUENT_CHECK;
3642 4933
3643 ev_start (EV_A_ (W)w, ++cleanupcnt); 4934 ev_start (EV_A_ (W)w, ++cleanupcnt);
3644 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2); 4935 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
3645 cleanups [cleanupcnt - 1] = w; 4936 cleanups [cleanupcnt - 1] = w;
3646 4937
3647 /* cleanup watchers should never keep a refcount on the loop */ 4938 /* cleanup watchers should never keep a refcount on the loop */
3648 ev_unref (EV_A); 4939 ev_unref (EV_A);
3649 EV_FREQUENT_CHECK; 4940 EV_FREQUENT_CHECK;
3650} 4941}
3651 4942
3652void 4943void
3653ev_cleanup_stop (EV_P_ ev_cleanup *w) 4944ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
3654{ 4945{
3655 clear_pending (EV_A_ (W)w); 4946 clear_pending (EV_A_ (W)w);
3656 if (expect_false (!ev_is_active (w))) 4947 if (ecb_expect_false (!ev_is_active (w)))
3657 return; 4948 return;
3658 4949
3659 EV_FREQUENT_CHECK; 4950 EV_FREQUENT_CHECK;
3660 ev_ref (EV_A); 4951 ev_ref (EV_A);
3661 4952
… …
3672} 4963}
3673#endif 4964#endif
3674 4965
3675#if EV_ASYNC_ENABLE 4966#if EV_ASYNC_ENABLE
3676void 4967void
3677ev_async_start (EV_P_ ev_async *w) 4968ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
3678{ 4969{
3679 if (expect_false (ev_is_active (w))) 4970 if (ecb_expect_false (ev_is_active (w)))
3680 return; 4971 return;
3681 4972
3682 w->sent = 0; 4973 w->sent = 0;
3683 4974
3684 evpipe_init (EV_A); 4975 evpipe_init (EV_A);
3685 4976
3686 EV_FREQUENT_CHECK; 4977 EV_FREQUENT_CHECK;
3687 4978
3688 ev_start (EV_A_ (W)w, ++asynccnt); 4979 ev_start (EV_A_ (W)w, ++asynccnt);
3689 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 4980 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
3690 asyncs [asynccnt - 1] = w; 4981 asyncs [asynccnt - 1] = w;
3691 4982
3692 EV_FREQUENT_CHECK; 4983 EV_FREQUENT_CHECK;
3693} 4984}
3694 4985
3695void 4986void
3696ev_async_stop (EV_P_ ev_async *w) 4987ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
3697{ 4988{
3698 clear_pending (EV_A_ (W)w); 4989 clear_pending (EV_A_ (W)w);
3699 if (expect_false (!ev_is_active (w))) 4990 if (ecb_expect_false (!ev_is_active (w)))
3700 return; 4991 return;
3701 4992
3702 EV_FREQUENT_CHECK; 4993 EV_FREQUENT_CHECK;
3703 4994
3704 { 4995 {
… …
3712 5003
3713 EV_FREQUENT_CHECK; 5004 EV_FREQUENT_CHECK;
3714} 5005}
3715 5006
3716void 5007void
3717ev_async_send (EV_P_ ev_async *w) 5008ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
3718{ 5009{
3719 w->sent = 1; 5010 w->sent = 1;
3720 evpipe_write (EV_A_ &async_pending); 5011 evpipe_write (EV_A_ &async_pending);
3721} 5012}
3722#endif 5013#endif
… …
3759 5050
3760 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5051 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3761} 5052}
3762 5053
3763void 5054void
3764ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 5055ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
3765{ 5056{
3766 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5057 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3767
3768 if (expect_false (!once))
3769 {
3770 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3771 return;
3772 }
3773 5058
3774 once->cb = cb; 5059 once->cb = cb;
3775 once->arg = arg; 5060 once->arg = arg;
3776 5061
3777 ev_init (&once->io, once_cb_io); 5062 ev_init (&once->io, once_cb_io);
… …
3790} 5075}
3791 5076
3792/*****************************************************************************/ 5077/*****************************************************************************/
3793 5078
3794#if EV_WALK_ENABLE 5079#if EV_WALK_ENABLE
5080ecb_cold
3795void 5081void
3796ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 5082ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
3797{ 5083{
3798 int i, j; 5084 int i, j;
3799 ev_watcher_list *wl, *wn; 5085 ev_watcher_list *wl, *wn;
3800 5086
3801 if (types & (EV_IO | EV_EMBED)) 5087 if (types & (EV_IO | EV_EMBED))
… …
3844 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 5130 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3845#endif 5131#endif
3846 5132
3847#if EV_IDLE_ENABLE 5133#if EV_IDLE_ENABLE
3848 if (types & EV_IDLE) 5134 if (types & EV_IDLE)
3849 for (j = NUMPRI; i--; ) 5135 for (j = NUMPRI; j--; )
3850 for (i = idlecnt [j]; i--; ) 5136 for (i = idlecnt [j]; i--; )
3851 cb (EV_A_ EV_IDLE, idles [j][i]); 5137 cb (EV_A_ EV_IDLE, idles [j][i]);
3852#endif 5138#endif
3853 5139
3854#if EV_FORK_ENABLE 5140#if EV_FORK_ENABLE
… …
3907 5193
3908#if EV_MULTIPLICITY 5194#if EV_MULTIPLICITY
3909 #include "ev_wrap.h" 5195 #include "ev_wrap.h"
3910#endif 5196#endif
3911 5197
3912EV_CPP(})
3913

Diff Legend

– Removed lines
+ Added lines
< Changed lines
> Changed lines