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Comparing libev/ev.c (file contents):
Revision 1.343 by root, Fri Apr 2 21:03:46 2010 UTC vs.
Revision 1.499 by root, Wed Jun 26 07:50:27 2019 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009,2010 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007-2019 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
10 * 1. Redistributions of source code must retain the above copyright notice, 10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer. 11 * this list of conditions and the following disclaimer.
12 * 12 *
13 * 2. Redistributions in binary form must reproduce the above copyright 13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the 14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution. 15 * documentation and/or other materials provided with the distribution.
16 * 16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- 18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO 19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- 20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
… …
35 * and other provisions required by the GPL. If you do not delete the 35 * and other provisions required by the GPL. If you do not delete the
36 * provisions above, a recipient may use your version of this file under 36 * provisions above, a recipient may use your version of this file under
37 * either the BSD or the GPL. 37 * either the BSD or the GPL.
38 */ 38 */
39 39
40#ifdef __cplusplus
41extern "C" {
42#endif
43
44/* this big block deduces configuration from config.h */ 40/* this big block deduces configuration from config.h */
45#ifndef EV_STANDALONE 41#ifndef EV_STANDALONE
46# ifdef EV_CONFIG_H 42# ifdef EV_CONFIG_H
47# include EV_CONFIG_H 43# include EV_CONFIG_H
48# else 44# else
49# include "config.h" 45# include "config.h"
46# endif
47
48# if HAVE_FLOOR
49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1
51# endif
50# endif 52# endif
51 53
52# if HAVE_CLOCK_SYSCALL 54# if HAVE_CLOCK_SYSCALL
53# ifndef EV_USE_CLOCK_SYSCALL 55# ifndef EV_USE_CLOCK_SYSCALL
54# define EV_USE_CLOCK_SYSCALL 1 56# define EV_USE_CLOCK_SYSCALL 1
… …
57# endif 59# endif
58# ifndef EV_USE_MONOTONIC 60# ifndef EV_USE_MONOTONIC
59# define EV_USE_MONOTONIC 1 61# define EV_USE_MONOTONIC 1
60# endif 62# endif
61# endif 63# endif
62# elif !defined(EV_USE_CLOCK_SYSCALL) 64# elif !defined EV_USE_CLOCK_SYSCALL
63# define EV_USE_CLOCK_SYSCALL 0 65# define EV_USE_CLOCK_SYSCALL 0
64# endif 66# endif
65 67
66# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
67# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
… …
111# define EV_USE_EPOLL EV_FEATURE_BACKENDS 113# define EV_USE_EPOLL EV_FEATURE_BACKENDS
112# endif 114# endif
113# else 115# else
114# undef EV_USE_EPOLL 116# undef EV_USE_EPOLL
115# define EV_USE_EPOLL 0 117# define EV_USE_EPOLL 0
118# endif
119
120# if HAVE_LINUX_AIO_ABI_H
121# ifndef EV_USE_LINUXAIO
122# define EV_USE_LINUXAIO EV_FEATURE_BACKENDS
123# endif
124# else
125# undef EV_USE_LINUXAIO
126# define EV_USE_LINUXAIO 0
116# endif 127# endif
117 128
118# if HAVE_KQUEUE && HAVE_SYS_EVENT_H 129# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
119# ifndef EV_USE_KQUEUE 130# ifndef EV_USE_KQUEUE
120# define EV_USE_KQUEUE EV_FEATURE_BACKENDS 131# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
… …
160# define EV_USE_EVENTFD 0 171# define EV_USE_EVENTFD 0
161# endif 172# endif
162 173
163#endif 174#endif
164 175
165#include <math.h> 176/* OS X, in its infinite idiocy, actually HARDCODES
177 * a limit of 1024 into their select. Where people have brains,
178 * OS X engineers apparently have a vacuum. Or maybe they were
179 * ordered to have a vacuum, or they do anything for money.
180 * This might help. Or not.
181 * Note that this must be defined early, as other include files
182 * will rely on this define as well.
183 */
184#define _DARWIN_UNLIMITED_SELECT 1
185
166#include <stdlib.h> 186#include <stdlib.h>
167#include <string.h> 187#include <string.h>
168#include <fcntl.h> 188#include <fcntl.h>
169#include <stddef.h> 189#include <stddef.h>
170 190
… …
180 200
181#ifdef EV_H 201#ifdef EV_H
182# include EV_H 202# include EV_H
183#else 203#else
184# include "ev.h" 204# include "ev.h"
205#endif
206
207#if EV_NO_THREADS
208# undef EV_NO_SMP
209# define EV_NO_SMP 1
210# undef ECB_NO_THREADS
211# define ECB_NO_THREADS 1
212#endif
213#if EV_NO_SMP
214# undef EV_NO_SMP
215# define ECB_NO_SMP 1
185#endif 216#endif
186 217
187#ifndef _WIN32 218#ifndef _WIN32
188# include <sys/time.h> 219# include <sys/time.h>
189# include <sys/wait.h> 220# include <sys/wait.h>
190# include <unistd.h> 221# include <unistd.h>
191#else 222#else
192# include <io.h> 223# include <io.h>
193# define WIN32_LEAN_AND_MEAN 224# define WIN32_LEAN_AND_MEAN
225# include <winsock2.h>
194# include <windows.h> 226# include <windows.h>
195# ifndef EV_SELECT_IS_WINSOCKET 227# ifndef EV_SELECT_IS_WINSOCKET
196# define EV_SELECT_IS_WINSOCKET 1 228# define EV_SELECT_IS_WINSOCKET 1
197# endif 229# endif
198# undef EV_AVOID_STDIO 230# undef EV_AVOID_STDIO
199#endif 231#endif
200 232
201/* this block tries to deduce configuration from header-defined symbols and defaults */ 233/* this block tries to deduce configuration from header-defined symbols and defaults */
202 234
203/* try to deduce the maximum number of signals on this platform */ 235/* try to deduce the maximum number of signals on this platform */
204#if defined (EV_NSIG) 236#if defined EV_NSIG
205/* use what's provided */ 237/* use what's provided */
206#elif defined (NSIG) 238#elif defined NSIG
207# define EV_NSIG (NSIG) 239# define EV_NSIG (NSIG)
208#elif defined(_NSIG) 240#elif defined _NSIG
209# define EV_NSIG (_NSIG) 241# define EV_NSIG (_NSIG)
210#elif defined (SIGMAX) 242#elif defined SIGMAX
211# define EV_NSIG (SIGMAX+1) 243# define EV_NSIG (SIGMAX+1)
212#elif defined (SIG_MAX) 244#elif defined SIG_MAX
213# define EV_NSIG (SIG_MAX+1) 245# define EV_NSIG (SIG_MAX+1)
214#elif defined (_SIG_MAX) 246#elif defined _SIG_MAX
215# define EV_NSIG (_SIG_MAX+1) 247# define EV_NSIG (_SIG_MAX+1)
216#elif defined (MAXSIG) 248#elif defined MAXSIG
217# define EV_NSIG (MAXSIG+1) 249# define EV_NSIG (MAXSIG+1)
218#elif defined (MAX_SIG) 250#elif defined MAX_SIG
219# define EV_NSIG (MAX_SIG+1) 251# define EV_NSIG (MAX_SIG+1)
220#elif defined (SIGARRAYSIZE) 252#elif defined SIGARRAYSIZE
221# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ 253# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
222#elif defined (_sys_nsig) 254#elif defined _sys_nsig
223# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 255# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
224#else 256#else
225# error "unable to find value for NSIG, please report" 257# define EV_NSIG (8 * sizeof (sigset_t) + 1)
226/* to make it compile regardless, just remove the above line, */ 258#endif
227/* but consider reporting it, too! :) */ 259
228# define EV_NSIG 65 260#ifndef EV_USE_FLOOR
261# define EV_USE_FLOOR 0
229#endif 262#endif
230 263
231#ifndef EV_USE_CLOCK_SYSCALL 264#ifndef EV_USE_CLOCK_SYSCALL
232# if __linux && __GLIBC__ >= 2 265# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
233# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS 266# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
234# else 267# else
235# define EV_USE_CLOCK_SYSCALL 0 268# define EV_USE_CLOCK_SYSCALL 0
236# endif 269# endif
237#endif 270#endif
238 271
272#if !(_POSIX_TIMERS > 0)
273# ifndef EV_USE_MONOTONIC
274# define EV_USE_MONOTONIC 0
275# endif
276# ifndef EV_USE_REALTIME
277# define EV_USE_REALTIME 0
278# endif
279#endif
280
239#ifndef EV_USE_MONOTONIC 281#ifndef EV_USE_MONOTONIC
240# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 282# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
241# define EV_USE_MONOTONIC EV_FEATURE_OS 283# define EV_USE_MONOTONIC EV_FEATURE_OS
242# else 284# else
243# define EV_USE_MONOTONIC 0 285# define EV_USE_MONOTONIC 0
244# endif 286# endif
245#endif 287#endif
… …
282 324
283#ifndef EV_USE_PORT 325#ifndef EV_USE_PORT
284# define EV_USE_PORT 0 326# define EV_USE_PORT 0
285#endif 327#endif
286 328
329#ifndef EV_USE_LINUXAIO
330# if __linux /* libev currently assumes linux/aio_abi.h is always available on linux */
331# define EV_USE_LINUXAIO 1
332# else
333# define EV_USE_LINUXAIO 0
334# endif
335#endif
336
287#ifndef EV_USE_INOTIFY 337#ifndef EV_USE_INOTIFY
288# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 338# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
289# define EV_USE_INOTIFY EV_FEATURE_OS 339# define EV_USE_INOTIFY EV_FEATURE_OS
290# else 340# else
291# define EV_USE_INOTIFY 0 341# define EV_USE_INOTIFY 0
… …
332 382
333#ifndef EV_HEAP_CACHE_AT 383#ifndef EV_HEAP_CACHE_AT
334# define EV_HEAP_CACHE_AT EV_FEATURE_DATA 384# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
335#endif 385#endif
336 386
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
337/* 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, */
338/* which makes programs even slower. might work on other unices, too. */ 404/* which makes programs even slower. might work on other unices, too. */
339#if EV_USE_CLOCK_SYSCALL 405#if EV_USE_CLOCK_SYSCALL
340# include <syscall.h> 406# include <sys/syscall.h>
341# ifdef SYS_clock_gettime 407# ifdef SYS_clock_gettime
342# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 408# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
343# undef EV_USE_MONOTONIC 409# undef EV_USE_MONOTONIC
344# define EV_USE_MONOTONIC 1 410# define EV_USE_MONOTONIC 1
345# else 411# else
… …
348# endif 414# endif
349#endif 415#endif
350 416
351/* 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 */
352 418
353#ifdef _AIX
354/* AIX has a completely broken poll.h header */
355# undef EV_USE_POLL
356# define EV_USE_POLL 0
357#endif
358
359#ifndef CLOCK_MONOTONIC 419#ifndef CLOCK_MONOTONIC
360# undef EV_USE_MONOTONIC 420# undef EV_USE_MONOTONIC
361# define EV_USE_MONOTONIC 0 421# define EV_USE_MONOTONIC 0
362#endif 422#endif
363 423
… …
370# undef EV_USE_INOTIFY 430# undef EV_USE_INOTIFY
371# define EV_USE_INOTIFY 0 431# define EV_USE_INOTIFY 0
372#endif 432#endif
373 433
374#if !EV_USE_NANOSLEEP 434#if !EV_USE_NANOSLEEP
375# ifndef _WIN32 435/* hp-ux has it in sys/time.h, which we unconditionally include above */
436# if !defined _WIN32 && !defined __hpux
376# include <sys/select.h> 437# include <sys/select.h>
377# endif 438# endif
378#endif 439#endif
379 440
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
446# endif
447#endif
448
380#if EV_USE_INOTIFY 449#if EV_USE_INOTIFY
381# include <sys/utsname.h>
382# include <sys/statfs.h> 450# include <sys/statfs.h>
383# include <sys/inotify.h> 451# include <sys/inotify.h>
384/* 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 */
385# ifndef IN_DONT_FOLLOW 453# ifndef IN_DONT_FOLLOW
386# undef EV_USE_INOTIFY 454# undef EV_USE_INOTIFY
387# define EV_USE_INOTIFY 0 455# define EV_USE_INOTIFY 0
388# endif 456# endif
389#endif
390
391#if EV_SELECT_IS_WINSOCKET
392# include <winsock.h>
393#endif 457#endif
394 458
395#if EV_USE_EVENTFD 459#if EV_USE_EVENTFD
396/* 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 */
397# include <stdint.h> 461# include <stdint.h>
… …
403# define EFD_CLOEXEC O_CLOEXEC 467# define EFD_CLOEXEC O_CLOEXEC
404# else 468# else
405# define EFD_CLOEXEC 02000000 469# define EFD_CLOEXEC 02000000
406# endif 470# endif
407# endif 471# endif
408# ifdef __cplusplus
409extern "C" {
410# endif
411int (eventfd) (unsigned int initval, int flags); 472EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
412# ifdef __cplusplus
413}
414# endif
415#endif 473#endif
416 474
417#if EV_USE_SIGNALFD 475#if EV_USE_SIGNALFD
418/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 476/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
419# include <stdint.h> 477# include <stdint.h>
… …
425# define SFD_CLOEXEC O_CLOEXEC 483# define SFD_CLOEXEC O_CLOEXEC
426# else 484# else
427# define SFD_CLOEXEC 02000000 485# define SFD_CLOEXEC 02000000
428# endif 486# endif
429# endif 487# endif
430# ifdef __cplusplus
431extern "C" {
432# endif
433int signalfd (int fd, const sigset_t *mask, int flags); 488EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
434 489
435struct signalfd_siginfo 490struct signalfd_siginfo
436{ 491{
437 uint32_t ssi_signo; 492 uint32_t ssi_signo;
438 char pad[128 - sizeof (uint32_t)]; 493 char pad[128 - sizeof (uint32_t)];
439}; 494};
440# ifdef __cplusplus
441}
442# endif 495#endif
443#endif
444
445 496
446/**/ 497/**/
447 498
448#if EV_VERIFY >= 3 499#if EV_VERIFY >= 3
449# define EV_FREQUENT_CHECK ev_verify (EV_A) 500# define EV_FREQUENT_CHECK ev_verify (EV_A)
450#else 501#else
451# define EV_FREQUENT_CHECK do { } while (0) 502# define EV_FREQUENT_CHECK do { } while (0)
452#endif 503#endif
453 504
454/* 505/*
455 * This is used to avoid floating point rounding problems. 506 * This is used to work around floating point rounding problems.
456 * It is added to ev_rt_now when scheduling periodics
457 * to ensure progress, time-wise, even when rounding
458 * errors are against us.
459 * This value is good at least till the year 4000. 507 * This value is good at least till the year 4000.
460 * Better solutions welcome.
461 */ 508 */
462#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 */
463 511
464#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) */
465#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) */
466 514
515#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } 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)
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;
467#if __GNUC__ >= 4 573 #if __GNUC__
468# define expect(expr,value) __builtin_expect ((expr),(value)) 574 typedef signed long long int64_t;
469# define noinline __attribute__ ((noinline)) 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
470#else 589#else
471# define expect(expr,value) (expr) 590 #include <inttypes.h>
472# define noinline 591 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
473# if __STDC_VERSION__ < 199901L && __GNUC__ < 2 592 #define ECB_PTRSIZE 8
474# define inline 593 #else
594 #define ECB_PTRSIZE 4
595 #endif
475# 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
476#endif 607 #endif
608#endif
477 609
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)
872 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
873#else
874 #define ecb_expect(expr,value) (expr)
875#endif
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. */
478#define expect_false(expr) expect ((expr) != 0, 0) 941#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
479#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_AVOID_PTHREADS 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
1555#define expect_false(cond) ecb_expect_false (cond)
1556#define expect_true(cond) ecb_expect_true (cond)
1557#define noinline ecb_noinline
1558
480#define inline_size static inline 1559#define inline_size ecb_inline
481 1560
482#if EV_FEATURE_CODE 1561#if EV_FEATURE_CODE
483# define inline_speed static inline 1562# define inline_speed ecb_inline
484#else 1563#else
485# define inline_speed static noinline 1564# define inline_speed noinline static
486#endif 1565#endif
487 1566
488#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1567#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
489 1568
490#if EV_MINPRI == EV_MAXPRI 1569#if EV_MINPRI == EV_MAXPRI
491# define ABSPRI(w) (((W)w), 0) 1570# define ABSPRI(w) (((W)w), 0)
492#else 1571#else
493# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1572# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
494#endif 1573#endif
495 1574
496#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1575#define EMPTY /* required for microsofts broken pseudo-c compiler */
497#define EMPTY2(a,b) /* used to suppress some warnings */
498 1576
499typedef ev_watcher *W; 1577typedef ev_watcher *W;
500typedef ev_watcher_list *WL; 1578typedef ev_watcher_list *WL;
501typedef ev_watcher_time *WT; 1579typedef ev_watcher_time *WT;
502 1580
503#define ev_active(w) ((W)(w))->active 1581#define ev_active(w) ((W)(w))->active
504#define ev_at(w) ((WT)(w))->at 1582#define ev_at(w) ((WT)(w))->at
505 1583
506#if EV_USE_REALTIME 1584#if EV_USE_REALTIME
507/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 1585/* sig_atomic_t is used to avoid per-thread variables or locking but still */
508/* giving it a reasonably high chance of working on typical architetcures */ 1586/* giving it a reasonably high chance of working on typical architectures */
509static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 1587static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
510#endif 1588#endif
511 1589
512#if EV_USE_MONOTONIC 1590#if EV_USE_MONOTONIC
513static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 1591static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
… …
527# include "ev_win32.c" 1605# include "ev_win32.c"
528#endif 1606#endif
529 1607
530/*****************************************************************************/ 1608/*****************************************************************************/
531 1609
1610#if EV_USE_LINUXAIO
1611# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
1612#endif
1613
1614/* define a suitable floor function (only used by periodics atm) */
1615
1616#if EV_USE_FLOOR
1617# include <math.h>
1618# define ev_floor(v) floor (v)
1619#else
1620
1621#include <float.h>
1622
1623/* a floor() replacement function, should be independent of ev_tstamp type */
1624noinline
1625static ev_tstamp
1626ev_floor (ev_tstamp v)
1627{
1628 /* the choice of shift factor is not terribly important */
1629#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1630 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1631#else
1632 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1633#endif
1634
1635 /* argument too large for an unsigned long? */
1636 if (expect_false (v >= shift))
1637 {
1638 ev_tstamp f;
1639
1640 if (v == v - 1.)
1641 return v; /* very large number */
1642
1643 f = shift * ev_floor (v * (1. / shift));
1644 return f + ev_floor (v - f);
1645 }
1646
1647 /* special treatment for negative args? */
1648 if (expect_false (v < 0.))
1649 {
1650 ev_tstamp f = -ev_floor (-v);
1651
1652 return f - (f == v ? 0 : 1);
1653 }
1654
1655 /* fits into an unsigned long */
1656 return (unsigned long)v;
1657}
1658
1659#endif
1660
1661/*****************************************************************************/
1662
1663#ifdef __linux
1664# include <sys/utsname.h>
1665#endif
1666
1667noinline ecb_cold
1668static unsigned int
1669ev_linux_version (void)
1670{
1671#ifdef __linux
1672 unsigned int v = 0;
1673 struct utsname buf;
1674 int i;
1675 char *p = buf.release;
1676
1677 if (uname (&buf))
1678 return 0;
1679
1680 for (i = 3+1; --i; )
1681 {
1682 unsigned int c = 0;
1683
1684 for (;;)
1685 {
1686 if (*p >= '0' && *p <= '9')
1687 c = c * 10 + *p++ - '0';
1688 else
1689 {
1690 p += *p == '.';
1691 break;
1692 }
1693 }
1694
1695 v = (v << 8) | c;
1696 }
1697
1698 return v;
1699#else
1700 return 0;
1701#endif
1702}
1703
1704/*****************************************************************************/
1705
532#if EV_AVOID_STDIO 1706#if EV_AVOID_STDIO
533static void noinline 1707noinline ecb_cold
1708static void
534ev_printerr (const char *msg) 1709ev_printerr (const char *msg)
535{ 1710{
536 write (STDERR_FILENO, msg, strlen (msg)); 1711 write (STDERR_FILENO, msg, strlen (msg));
537} 1712}
538#endif 1713#endif
539 1714
540static void (*syserr_cb)(const char *msg); 1715static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
541 1716
1717ecb_cold
542void 1718void
543ev_set_syserr_cb (void (*cb)(const char *msg)) 1719ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
544{ 1720{
545 syserr_cb = cb; 1721 syserr_cb = cb;
546} 1722}
547 1723
548static void noinline 1724noinline ecb_cold
1725static void
549ev_syserr (const char *msg) 1726ev_syserr (const char *msg)
550{ 1727{
551 if (!msg) 1728 if (!msg)
552 msg = "(libev) system error"; 1729 msg = "(libev) system error";
553 1730
554 if (syserr_cb) 1731 if (syserr_cb)
555 syserr_cb (msg); 1732 syserr_cb (msg);
556 else 1733 else
557 { 1734 {
558#if EV_AVOID_STDIO 1735#if EV_AVOID_STDIO
559 const char *err = strerror (errno);
560
561 ev_printerr (msg); 1736 ev_printerr (msg);
562 ev_printerr (": "); 1737 ev_printerr (": ");
563 ev_printerr (err); 1738 ev_printerr (strerror (errno));
564 ev_printerr ("\n"); 1739 ev_printerr ("\n");
565#else 1740#else
566 perror (msg); 1741 perror (msg);
567#endif 1742#endif
568 abort (); 1743 abort ();
569 } 1744 }
570} 1745}
571 1746
572static void * 1747static void *
573ev_realloc_emul (void *ptr, long size) 1748ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
574{ 1749{
575#if __GLIBC__
576 return realloc (ptr, size);
577#else
578 /* some systems, notably openbsd and darwin, fail to properly 1750 /* some systems, notably openbsd and darwin, fail to properly
579 * implement realloc (x, 0) (as required by both ansi c-89 and 1751 * implement realloc (x, 0) (as required by both ansi c-89 and
580 * the single unix specification, so work around them here. 1752 * the single unix specification, so work around them here.
1753 * recently, also (at least) fedora and debian started breaking it,
1754 * despite documenting it otherwise.
581 */ 1755 */
582 1756
583 if (size) 1757 if (size)
584 return realloc (ptr, size); 1758 return realloc (ptr, size);
585 1759
586 free (ptr); 1760 free (ptr);
587 return 0; 1761 return 0;
588#endif
589} 1762}
590 1763
591static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1764static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
592 1765
1766ecb_cold
593void 1767void
594ev_set_allocator (void *(*cb)(void *ptr, long size)) 1768ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
595{ 1769{
596 alloc = cb; 1770 alloc = cb;
597} 1771}
598 1772
599inline_speed void * 1773inline_speed void *
… …
602 ptr = alloc (ptr, size); 1776 ptr = alloc (ptr, size);
603 1777
604 if (!ptr && size) 1778 if (!ptr && size)
605 { 1779 {
606#if EV_AVOID_STDIO 1780#if EV_AVOID_STDIO
607 ev_printerr ("libev: memory allocation failed, aborting.\n"); 1781 ev_printerr ("(libev) memory allocation failed, aborting.\n");
608#else 1782#else
609 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1783 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
610#endif 1784#endif
611 abort (); 1785 abort ();
612 } 1786 }
613 1787
614 return ptr; 1788 return ptr;
… …
626typedef struct 1800typedef struct
627{ 1801{
628 WL head; 1802 WL head;
629 unsigned char events; /* the events watched for */ 1803 unsigned char events; /* the events watched for */
630 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */ 1804 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
631 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1805 unsigned char emask; /* some backends store the actual kernel mask in here */
632 unsigned char unused; 1806 unsigned char unused;
633#if EV_USE_EPOLL 1807#if EV_USE_EPOLL
634 unsigned int egen; /* generation counter to counter epoll bugs */ 1808 unsigned int egen; /* generation counter to counter epoll bugs */
635#endif 1809#endif
636#if EV_SELECT_IS_WINSOCKET 1810#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
637 SOCKET handle; 1811 SOCKET handle;
1812#endif
1813#if EV_USE_IOCP
1814 OVERLAPPED or, ow;
638#endif 1815#endif
639} ANFD; 1816} ANFD;
640 1817
641/* stores the pending event set for a given watcher */ 1818/* stores the pending event set for a given watcher */
642typedef struct 1819typedef struct
… …
684 #undef VAR 1861 #undef VAR
685 }; 1862 };
686 #include "ev_wrap.h" 1863 #include "ev_wrap.h"
687 1864
688 static struct ev_loop default_loop_struct; 1865 static struct ev_loop default_loop_struct;
689 struct ev_loop *ev_default_loop_ptr; 1866 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
690 1867
691#else 1868#else
692 1869
693 ev_tstamp ev_rt_now; 1870 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
694 #define VAR(name,decl) static decl; 1871 #define VAR(name,decl) static decl;
695 #include "ev_vars.h" 1872 #include "ev_vars.h"
696 #undef VAR 1873 #undef VAR
697 1874
698 static int ev_default_loop_ptr; 1875 static int ev_default_loop_ptr;
… …
707# define EV_RELEASE_CB (void)0 1884# define EV_RELEASE_CB (void)0
708# define EV_ACQUIRE_CB (void)0 1885# define EV_ACQUIRE_CB (void)0
709# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1886# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
710#endif 1887#endif
711 1888
712#define EVUNLOOP_RECURSE 0x80 1889#define EVBREAK_RECURSE 0x80
713 1890
714/*****************************************************************************/ 1891/*****************************************************************************/
715 1892
716#ifndef EV_HAVE_EV_TIME 1893#ifndef EV_HAVE_EV_TIME
717ev_tstamp 1894ev_tstamp
718ev_time (void) 1895ev_time (void) EV_NOEXCEPT
719{ 1896{
720#if EV_USE_REALTIME 1897#if EV_USE_REALTIME
721 if (expect_true (have_realtime)) 1898 if (expect_true (have_realtime))
722 { 1899 {
723 struct timespec ts; 1900 struct timespec ts;
… …
747 return ev_time (); 1924 return ev_time ();
748} 1925}
749 1926
750#if EV_MULTIPLICITY 1927#if EV_MULTIPLICITY
751ev_tstamp 1928ev_tstamp
752ev_now (EV_P) 1929ev_now (EV_P) EV_NOEXCEPT
753{ 1930{
754 return ev_rt_now; 1931 return ev_rt_now;
755} 1932}
756#endif 1933#endif
757 1934
758void 1935void
759ev_sleep (ev_tstamp delay) 1936ev_sleep (ev_tstamp delay) EV_NOEXCEPT
760{ 1937{
761 if (delay > 0.) 1938 if (delay > 0.)
762 { 1939 {
763#if EV_USE_NANOSLEEP 1940#if EV_USE_NANOSLEEP
764 struct timespec ts; 1941 struct timespec ts;
765 1942
766 ts.tv_sec = (time_t)delay; 1943 EV_TS_SET (ts, delay);
767 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
768
769 nanosleep (&ts, 0); 1944 nanosleep (&ts, 0);
770#elif defined(_WIN32) 1945#elif defined _WIN32
1946 /* maybe this should round up, as ms is very low resolution */
1947 /* compared to select (µs) or nanosleep (ns) */
771 Sleep ((unsigned long)(delay * 1e3)); 1948 Sleep ((unsigned long)(delay * 1e3));
772#else 1949#else
773 struct timeval tv; 1950 struct timeval tv;
774 1951
775 tv.tv_sec = (time_t)delay;
776 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
777
778 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1952 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
779 /* something not guaranteed by newer posix versions, but guaranteed */ 1953 /* something not guaranteed by newer posix versions, but guaranteed */
780 /* by older ones */ 1954 /* by older ones */
1955 EV_TV_SET (tv, delay);
781 select (0, 0, 0, 0, &tv); 1956 select (0, 0, 0, 0, &tv);
782#endif 1957#endif
783 } 1958 }
784} 1959}
785 1960
786/*****************************************************************************/ 1961/*****************************************************************************/
787 1962
788#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1963#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
789 1964
790/* find a suitable new size for the given array, */ 1965/* find a suitable new size for the given array, */
791/* hopefully by rounding to a ncie-to-malloc size */ 1966/* hopefully by rounding to a nice-to-malloc size */
792inline_size int 1967inline_size int
793array_nextsize (int elem, int cur, int cnt) 1968array_nextsize (int elem, int cur, int cnt)
794{ 1969{
795 int ncur = cur + 1; 1970 int ncur = cur + 1;
796 1971
797 do 1972 do
798 ncur <<= 1; 1973 ncur <<= 1;
799 while (cnt > ncur); 1974 while (cnt > ncur);
800 1975
801 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1976 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
802 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1977 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
803 { 1978 {
804 ncur *= elem; 1979 ncur *= elem;
805 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1980 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
806 ncur = ncur - sizeof (void *) * 4; 1981 ncur = ncur - sizeof (void *) * 4;
… …
808 } 1983 }
809 1984
810 return ncur; 1985 return ncur;
811} 1986}
812 1987
813static noinline void * 1988noinline ecb_cold
1989static void *
814array_realloc (int elem, void *base, int *cur, int cnt) 1990array_realloc (int elem, void *base, int *cur, int cnt)
815{ 1991{
816 *cur = array_nextsize (elem, *cur, cnt); 1992 *cur = array_nextsize (elem, *cur, cnt);
817 return ev_realloc (base, elem * *cur); 1993 return ev_realloc (base, elem * *cur);
818} 1994}
819 1995
1996#define array_needsize_noinit(base,offset,count)
1997
820#define array_init_zero(base,count) \ 1998#define array_needsize_zerofill(base,offset,count) \
821 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1999 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
822 2000
823#define array_needsize(type,base,cur,cnt,init) \ 2001#define array_needsize(type,base,cur,cnt,init) \
824 if (expect_false ((cnt) > (cur))) \ 2002 if (expect_false ((cnt) > (cur))) \
825 { \ 2003 { \
826 int ocur_ = (cur); \ 2004 ecb_unused int ocur_ = (cur); \
827 (base) = (type *)array_realloc \ 2005 (base) = (type *)array_realloc \
828 (sizeof (type), (base), &(cur), (cnt)); \ 2006 (sizeof (type), (base), &(cur), (cnt)); \
829 init ((base) + (ocur_), (cur) - ocur_); \ 2007 init ((base), ocur_, ((cur) - ocur_)); \
830 } 2008 }
831 2009
832#if 0 2010#if 0
833#define array_slim(type,stem) \ 2011#define array_slim(type,stem) \
834 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2012 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
… …
843 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 2021 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
844 2022
845/*****************************************************************************/ 2023/*****************************************************************************/
846 2024
847/* dummy callback for pending events */ 2025/* dummy callback for pending events */
848static void noinline 2026noinline
2027static void
849pendingcb (EV_P_ ev_prepare *w, int revents) 2028pendingcb (EV_P_ ev_prepare *w, int revents)
850{ 2029{
851} 2030}
852 2031
853void noinline 2032noinline
2033void
854ev_feed_event (EV_P_ void *w, int revents) 2034ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
855{ 2035{
856 W w_ = (W)w; 2036 W w_ = (W)w;
857 int pri = ABSPRI (w_); 2037 int pri = ABSPRI (w_);
858 2038
859 if (expect_false (w_->pending)) 2039 if (expect_false (w_->pending))
860 pendings [pri][w_->pending - 1].events |= revents; 2040 pendings [pri][w_->pending - 1].events |= revents;
861 else 2041 else
862 { 2042 {
863 w_->pending = ++pendingcnt [pri]; 2043 w_->pending = ++pendingcnt [pri];
864 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2044 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
865 pendings [pri][w_->pending - 1].w = w_; 2045 pendings [pri][w_->pending - 1].w = w_;
866 pendings [pri][w_->pending - 1].events = revents; 2046 pendings [pri][w_->pending - 1].events = revents;
867 } 2047 }
2048
2049 pendingpri = NUMPRI - 1;
868} 2050}
869 2051
870inline_speed void 2052inline_speed void
871feed_reverse (EV_P_ W w) 2053feed_reverse (EV_P_ W w)
872{ 2054{
873 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2055 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
874 rfeeds [rfeedcnt++] = w; 2056 rfeeds [rfeedcnt++] = w;
875} 2057}
876 2058
877inline_size void 2059inline_size void
878feed_reverse_done (EV_P_ int revents) 2060feed_reverse_done (EV_P_ int revents)
… …
918 if (expect_true (!anfd->reify)) 2100 if (expect_true (!anfd->reify))
919 fd_event_nocheck (EV_A_ fd, revents); 2101 fd_event_nocheck (EV_A_ fd, revents);
920} 2102}
921 2103
922void 2104void
923ev_feed_fd_event (EV_P_ int fd, int revents) 2105ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
924{ 2106{
925 if (fd >= 0 && fd < anfdmax) 2107 if (fd >= 0 && fd < anfdmax)
926 fd_event_nocheck (EV_A_ fd, revents); 2108 fd_event_nocheck (EV_A_ fd, revents);
927} 2109}
928 2110
… …
931inline_size void 2113inline_size void
932fd_reify (EV_P) 2114fd_reify (EV_P)
933{ 2115{
934 int i; 2116 int i;
935 2117
2118#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
2119 for (i = 0; i < fdchangecnt; ++i)
2120 {
2121 int fd = fdchanges [i];
2122 ANFD *anfd = anfds + fd;
2123
2124 if (anfd->reify & EV__IOFDSET && anfd->head)
2125 {
2126 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
2127
2128 if (handle != anfd->handle)
2129 {
2130 unsigned long arg;
2131
2132 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
2133
2134 /* handle changed, but fd didn't - we need to do it in two steps */
2135 backend_modify (EV_A_ fd, anfd->events, 0);
2136 anfd->events = 0;
2137 anfd->handle = handle;
2138 }
2139 }
2140 }
2141#endif
2142
936 for (i = 0; i < fdchangecnt; ++i) 2143 for (i = 0; i < fdchangecnt; ++i)
937 { 2144 {
938 int fd = fdchanges [i]; 2145 int fd = fdchanges [i];
939 ANFD *anfd = anfds + fd; 2146 ANFD *anfd = anfds + fd;
940 ev_io *w; 2147 ev_io *w;
941 2148
942 unsigned char events = 0; 2149 unsigned char o_events = anfd->events;
2150 unsigned char o_reify = anfd->reify;
943 2151
944 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2152 anfd->reify = 0;
945 events |= (unsigned char)w->events;
946 2153
947#if EV_SELECT_IS_WINSOCKET 2154 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
948 if (events)
949 { 2155 {
950 unsigned long arg; 2156 anfd->events = 0;
951 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 2157
952 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 2158 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
2159 anfd->events |= (unsigned char)w->events;
2160
2161 if (o_events != anfd->events)
2162 o_reify = EV__IOFDSET; /* actually |= */
953 } 2163 }
954#endif
955 2164
956 { 2165 if (o_reify & EV__IOFDSET)
957 unsigned char o_events = anfd->events;
958 unsigned char o_reify = anfd->reify;
959
960 anfd->reify = 0;
961 anfd->events = events;
962
963 if (o_events != events || o_reify & EV__IOFDSET)
964 backend_modify (EV_A_ fd, o_events, events); 2166 backend_modify (EV_A_ fd, o_events, anfd->events);
965 }
966 } 2167 }
967 2168
968 fdchangecnt = 0; 2169 fdchangecnt = 0;
969} 2170}
970 2171
971/* something about the given fd changed */ 2172/* something about the given fd changed */
972inline_size void 2173inline_size
2174void
973fd_change (EV_P_ int fd, int flags) 2175fd_change (EV_P_ int fd, int flags)
974{ 2176{
975 unsigned char reify = anfds [fd].reify; 2177 unsigned char reify = anfds [fd].reify;
976 anfds [fd].reify |= flags; 2178 anfds [fd].reify |= flags;
977 2179
978 if (expect_true (!reify)) 2180 if (expect_true (!reify))
979 { 2181 {
980 ++fdchangecnt; 2182 ++fdchangecnt;
981 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2183 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
982 fdchanges [fdchangecnt - 1] = fd; 2184 fdchanges [fdchangecnt - 1] = fd;
983 } 2185 }
984} 2186}
985 2187
986/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2188/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
987inline_speed void 2189inline_speed ecb_cold void
988fd_kill (EV_P_ int fd) 2190fd_kill (EV_P_ int fd)
989{ 2191{
990 ev_io *w; 2192 ev_io *w;
991 2193
992 while ((w = (ev_io *)anfds [fd].head)) 2194 while ((w = (ev_io *)anfds [fd].head))
… …
995 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2197 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
996 } 2198 }
997} 2199}
998 2200
999/* check whether the given fd is actually valid, for error recovery */ 2201/* check whether the given fd is actually valid, for error recovery */
1000inline_size int 2202inline_size ecb_cold int
1001fd_valid (int fd) 2203fd_valid (int fd)
1002{ 2204{
1003#ifdef _WIN32 2205#ifdef _WIN32
1004 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2206 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1005#else 2207#else
1006 return fcntl (fd, F_GETFD) != -1; 2208 return fcntl (fd, F_GETFD) != -1;
1007#endif 2209#endif
1008} 2210}
1009 2211
1010/* called on EBADF to verify fds */ 2212/* called on EBADF to verify fds */
1011static void noinline 2213noinline ecb_cold
2214static void
1012fd_ebadf (EV_P) 2215fd_ebadf (EV_P)
1013{ 2216{
1014 int fd; 2217 int fd;
1015 2218
1016 for (fd = 0; fd < anfdmax; ++fd) 2219 for (fd = 0; fd < anfdmax; ++fd)
… …
1018 if (!fd_valid (fd) && errno == EBADF) 2221 if (!fd_valid (fd) && errno == EBADF)
1019 fd_kill (EV_A_ fd); 2222 fd_kill (EV_A_ fd);
1020} 2223}
1021 2224
1022/* called on ENOMEM in select/poll to kill some fds and retry */ 2225/* called on ENOMEM in select/poll to kill some fds and retry */
1023static void noinline 2226noinline ecb_cold
2227static void
1024fd_enomem (EV_P) 2228fd_enomem (EV_P)
1025{ 2229{
1026 int fd; 2230 int fd;
1027 2231
1028 for (fd = anfdmax; fd--; ) 2232 for (fd = anfdmax; fd--; )
… …
1032 break; 2236 break;
1033 } 2237 }
1034} 2238}
1035 2239
1036/* usually called after fork if backend needs to re-arm all fds from scratch */ 2240/* usually called after fork if backend needs to re-arm all fds from scratch */
1037static void noinline 2241noinline
2242static void
1038fd_rearm_all (EV_P) 2243fd_rearm_all (EV_P)
1039{ 2244{
1040 int fd; 2245 int fd;
1041 2246
1042 for (fd = 0; fd < anfdmax; ++fd) 2247 for (fd = 0; fd < anfdmax; ++fd)
… …
1063} 2268}
1064 2269
1065/*****************************************************************************/ 2270/*****************************************************************************/
1066 2271
1067/* 2272/*
1068 * the heap functions want a real array index. array index 0 uis guaranteed to not 2273 * the heap functions want a real array index. array index 0 is guaranteed to not
1069 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 2274 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
1070 * the branching factor of the d-tree. 2275 * the branching factor of the d-tree.
1071 */ 2276 */
1072 2277
1073/* 2278/*
… …
1223 2428
1224/*****************************************************************************/ 2429/*****************************************************************************/
1225 2430
1226#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2431#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1227 2432
1228static void noinline 2433noinline ecb_cold
2434static void
1229evpipe_init (EV_P) 2435evpipe_init (EV_P)
1230{ 2436{
1231 if (!ev_is_active (&pipe_w)) 2437 if (!ev_is_active (&pipe_w))
1232 { 2438 {
2439 int fds [2];
2440
1233# if EV_USE_EVENTFD 2441# if EV_USE_EVENTFD
2442 fds [0] = -1;
1234 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2443 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1235 if (evfd < 0 && errno == EINVAL) 2444 if (fds [1] < 0 && errno == EINVAL)
1236 evfd = eventfd (0, 0); 2445 fds [1] = eventfd (0, 0);
1237 2446
1238 if (evfd >= 0) 2447 if (fds [1] < 0)
2448# endif
1239 { 2449 {
2450 while (pipe (fds))
2451 ev_syserr ("(libev) error creating signal/async pipe");
2452
2453 fd_intern (fds [0]);
2454 }
2455
1240 evpipe [0] = -1; 2456 evpipe [0] = fds [0];
1241 fd_intern (evfd); /* doing it twice doesn't hurt */ 2457
1242 ev_io_set (&pipe_w, evfd, EV_READ); 2458 if (evpipe [1] < 0)
2459 evpipe [1] = fds [1]; /* first call, set write fd */
2460 else
2461 {
2462 /* on subsequent calls, do not change evpipe [1] */
2463 /* so that evpipe_write can always rely on its value. */
2464 /* this branch does not do anything sensible on windows, */
2465 /* so must not be executed on windows */
2466
2467 dup2 (fds [1], evpipe [1]);
2468 close (fds [1]);
2469 }
2470
2471 fd_intern (evpipe [1]);
2472
2473 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2474 ev_io_start (EV_A_ &pipe_w);
2475 ev_unref (EV_A); /* watcher should not keep loop alive */
2476 }
2477}
2478
2479inline_speed void
2480evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2481{
2482 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2483
2484 if (expect_true (*flag))
2485 return;
2486
2487 *flag = 1;
2488 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2489
2490 pipe_write_skipped = 1;
2491
2492 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2493
2494 if (pipe_write_wanted)
2495 {
2496 int old_errno;
2497
2498 pipe_write_skipped = 0;
2499 ECB_MEMORY_FENCE_RELEASE;
2500
2501 old_errno = errno; /* save errno because write will clobber it */
2502
2503#if EV_USE_EVENTFD
2504 if (evpipe [0] < 0)
2505 {
2506 uint64_t counter = 1;
2507 write (evpipe [1], &counter, sizeof (uint64_t));
1243 } 2508 }
1244 else 2509 else
1245# endif 2510#endif
1246 { 2511 {
1247 while (pipe (evpipe)) 2512#ifdef _WIN32
1248 ev_syserr ("(libev) error creating signal/async pipe"); 2513 WSABUF buf;
1249 2514 DWORD sent;
1250 fd_intern (evpipe [0]); 2515 buf.buf = (char *)&buf;
1251 fd_intern (evpipe [1]); 2516 buf.len = 1;
1252 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2517 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2518#else
2519 write (evpipe [1], &(evpipe [1]), 1);
2520#endif
1253 } 2521 }
1254
1255 ev_io_start (EV_A_ &pipe_w);
1256 ev_unref (EV_A); /* watcher should not keep loop alive */
1257 }
1258}
1259
1260inline_size void
1261evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1262{
1263 if (!*flag)
1264 {
1265 int old_errno = errno; /* save errno because write might clobber it */
1266 char dummy;
1267
1268 *flag = 1;
1269
1270#if EV_USE_EVENTFD
1271 if (evfd >= 0)
1272 {
1273 uint64_t counter = 1;
1274 write (evfd, &counter, sizeof (uint64_t));
1275 }
1276 else
1277#endif
1278 write (evpipe [1], &dummy, 1);
1279 2522
1280 errno = old_errno; 2523 errno = old_errno;
1281 } 2524 }
1282} 2525}
1283 2526
… …
1286static void 2529static void
1287pipecb (EV_P_ ev_io *iow, int revents) 2530pipecb (EV_P_ ev_io *iow, int revents)
1288{ 2531{
1289 int i; 2532 int i;
1290 2533
2534 if (revents & EV_READ)
2535 {
1291#if EV_USE_EVENTFD 2536#if EV_USE_EVENTFD
1292 if (evfd >= 0) 2537 if (evpipe [0] < 0)
1293 { 2538 {
1294 uint64_t counter; 2539 uint64_t counter;
1295 read (evfd, &counter, sizeof (uint64_t)); 2540 read (evpipe [1], &counter, sizeof (uint64_t));
1296 } 2541 }
1297 else 2542 else
1298#endif 2543#endif
1299 { 2544 {
1300 char dummy; 2545 char dummy[4];
2546#ifdef _WIN32
2547 WSABUF buf;
2548 DWORD recvd;
2549 DWORD flags = 0;
2550 buf.buf = dummy;
2551 buf.len = sizeof (dummy);
2552 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2553#else
1301 read (evpipe [0], &dummy, 1); 2554 read (evpipe [0], &dummy, sizeof (dummy));
2555#endif
2556 }
1302 } 2557 }
1303 2558
2559 pipe_write_skipped = 0;
2560
2561 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2562
2563#if EV_SIGNAL_ENABLE
1304 if (sig_pending) 2564 if (sig_pending)
1305 { 2565 {
1306 sig_pending = 0; 2566 sig_pending = 0;
2567
2568 ECB_MEMORY_FENCE;
1307 2569
1308 for (i = EV_NSIG - 1; i--; ) 2570 for (i = EV_NSIG - 1; i--; )
1309 if (expect_false (signals [i].pending)) 2571 if (expect_false (signals [i].pending))
1310 ev_feed_signal_event (EV_A_ i + 1); 2572 ev_feed_signal_event (EV_A_ i + 1);
1311 } 2573 }
2574#endif
1312 2575
1313#if EV_ASYNC_ENABLE 2576#if EV_ASYNC_ENABLE
1314 if (async_pending) 2577 if (async_pending)
1315 { 2578 {
1316 async_pending = 0; 2579 async_pending = 0;
2580
2581 ECB_MEMORY_FENCE;
1317 2582
1318 for (i = asynccnt; i--; ) 2583 for (i = asynccnt; i--; )
1319 if (asyncs [i]->sent) 2584 if (asyncs [i]->sent)
1320 { 2585 {
1321 asyncs [i]->sent = 0; 2586 asyncs [i]->sent = 0;
2587 ECB_MEMORY_FENCE_RELEASE;
1322 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2588 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1323 } 2589 }
1324 } 2590 }
1325#endif 2591#endif
1326} 2592}
1327 2593
1328/*****************************************************************************/ 2594/*****************************************************************************/
1329 2595
2596void
2597ev_feed_signal (int signum) EV_NOEXCEPT
2598{
2599#if EV_MULTIPLICITY
2600 EV_P;
2601 ECB_MEMORY_FENCE_ACQUIRE;
2602 EV_A = signals [signum - 1].loop;
2603
2604 if (!EV_A)
2605 return;
2606#endif
2607
2608 signals [signum - 1].pending = 1;
2609 evpipe_write (EV_A_ &sig_pending);
2610}
2611
1330static void 2612static void
1331ev_sighandler (int signum) 2613ev_sighandler (int signum)
1332{ 2614{
1333#if EV_MULTIPLICITY
1334 EV_P = signals [signum - 1].loop;
1335#endif
1336
1337#ifdef _WIN32 2615#ifdef _WIN32
1338 signal (signum, ev_sighandler); 2616 signal (signum, ev_sighandler);
1339#endif 2617#endif
1340 2618
1341 signals [signum - 1].pending = 1; 2619 ev_feed_signal (signum);
1342 evpipe_write (EV_A_ &sig_pending);
1343} 2620}
1344 2621
1345void noinline 2622noinline
2623void
1346ev_feed_signal_event (EV_P_ int signum) 2624ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
1347{ 2625{
1348 WL w; 2626 WL w;
1349 2627
1350 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2628 if (expect_false (signum <= 0 || signum >= EV_NSIG))
1351 return; 2629 return;
1352 2630
1353 --signum; 2631 --signum;
1354 2632
1355#if EV_MULTIPLICITY 2633#if EV_MULTIPLICITY
… …
1359 if (expect_false (signals [signum].loop != EV_A)) 2637 if (expect_false (signals [signum].loop != EV_A))
1360 return; 2638 return;
1361#endif 2639#endif
1362 2640
1363 signals [signum].pending = 0; 2641 signals [signum].pending = 0;
2642 ECB_MEMORY_FENCE_RELEASE;
1364 2643
1365 for (w = signals [signum].head; w; w = w->next) 2644 for (w = signals [signum].head; w; w = w->next)
1366 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2645 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1367} 2646}
1368 2647
… …
1447 2726
1448#endif 2727#endif
1449 2728
1450/*****************************************************************************/ 2729/*****************************************************************************/
1451 2730
2731#if EV_USE_IOCP
2732# include "ev_iocp.c"
2733#endif
1452#if EV_USE_PORT 2734#if EV_USE_PORT
1453# include "ev_port.c" 2735# include "ev_port.c"
1454#endif 2736#endif
1455#if EV_USE_KQUEUE 2737#if EV_USE_KQUEUE
1456# include "ev_kqueue.c" 2738# include "ev_kqueue.c"
1457#endif 2739#endif
1458#if EV_USE_EPOLL 2740#if EV_USE_EPOLL
1459# include "ev_epoll.c" 2741# include "ev_epoll.c"
1460#endif 2742#endif
2743#if EV_USE_LINUXAIO
2744# include "ev_linuxaio.c"
2745#endif
1461#if EV_USE_POLL 2746#if EV_USE_POLL
1462# include "ev_poll.c" 2747# include "ev_poll.c"
1463#endif 2748#endif
1464#if EV_USE_SELECT 2749#if EV_USE_SELECT
1465# include "ev_select.c" 2750# include "ev_select.c"
1466#endif 2751#endif
1467 2752
1468int 2753ecb_cold int
1469ev_version_major (void) 2754ev_version_major (void) EV_NOEXCEPT
1470{ 2755{
1471 return EV_VERSION_MAJOR; 2756 return EV_VERSION_MAJOR;
1472} 2757}
1473 2758
1474int 2759ecb_cold int
1475ev_version_minor (void) 2760ev_version_minor (void) EV_NOEXCEPT
1476{ 2761{
1477 return EV_VERSION_MINOR; 2762 return EV_VERSION_MINOR;
1478} 2763}
1479 2764
1480/* return true if we are running with elevated privileges and should ignore env variables */ 2765/* return true if we are running with elevated privileges and should ignore env variables */
1481int inline_size 2766inline_size ecb_cold int
1482enable_secure (void) 2767enable_secure (void)
1483{ 2768{
1484#ifdef _WIN32 2769#ifdef _WIN32
1485 return 0; 2770 return 0;
1486#else 2771#else
1487 return getuid () != geteuid () 2772 return getuid () != geteuid ()
1488 || getgid () != getegid (); 2773 || getgid () != getegid ();
1489#endif 2774#endif
1490} 2775}
1491 2776
2777ecb_cold
1492unsigned int 2778unsigned int
1493ev_supported_backends (void) 2779ev_supported_backends (void) EV_NOEXCEPT
1494{ 2780{
1495 unsigned int flags = 0; 2781 unsigned int flags = 0;
1496 2782
1497 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2783 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1498 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2784 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
1499 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 2785 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2786 if (EV_USE_LINUXAIO) flags |= EVBACKEND_LINUXAIO;
1500 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 2787 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
1501 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2788 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
1502 2789
1503 return flags; 2790 return flags;
1504} 2791}
1505 2792
2793ecb_cold
1506unsigned int 2794unsigned int
1507ev_recommended_backends (void) 2795ev_recommended_backends (void) EV_NOEXCEPT
1508{ 2796{
1509 unsigned int flags = ev_supported_backends (); 2797 unsigned int flags = ev_supported_backends ();
1510 2798
1511#ifndef __NetBSD__ 2799#ifndef __NetBSD__
1512 /* kqueue is borked on everything but netbsd apparently */ 2800 /* kqueue is borked on everything but netbsd apparently */
… …
1520#endif 2808#endif
1521#ifdef __FreeBSD__ 2809#ifdef __FreeBSD__
1522 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */ 2810 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1523#endif 2811#endif
1524 2812
2813 /* TODO: linuxaio is very experimental */
2814#if !EV_RECOMMEND_LINUXAIO
2815 flags &= ~EVBACKEND_LINUXAIO;
2816#endif
2817
1525 return flags; 2818 return flags;
1526} 2819}
1527 2820
2821ecb_cold
1528unsigned int 2822unsigned int
1529ev_embeddable_backends (void) 2823ev_embeddable_backends (void) EV_NOEXCEPT
1530{ 2824{
1531 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2825 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1532 2826
1533 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2827 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1534 /* please fix it and tell me how to detect the fix */ 2828 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1535 flags &= ~EVBACKEND_EPOLL; 2829 flags &= ~EVBACKEND_EPOLL;
1536 2830
1537 return flags; 2831 return flags;
1538} 2832}
1539 2833
1540unsigned int 2834unsigned int
1541ev_backend (EV_P) 2835ev_backend (EV_P) EV_NOEXCEPT
1542{ 2836{
1543 return backend; 2837 return backend;
1544} 2838}
1545 2839
1546#if EV_FEATURE_API 2840#if EV_FEATURE_API
1547unsigned int 2841unsigned int
1548ev_iteration (EV_P) 2842ev_iteration (EV_P) EV_NOEXCEPT
1549{ 2843{
1550 return loop_count; 2844 return loop_count;
1551} 2845}
1552 2846
1553unsigned int 2847unsigned int
1554ev_depth (EV_P) 2848ev_depth (EV_P) EV_NOEXCEPT
1555{ 2849{
1556 return loop_depth; 2850 return loop_depth;
1557} 2851}
1558 2852
1559void 2853void
1560ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2854ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1561{ 2855{
1562 io_blocktime = interval; 2856 io_blocktime = interval;
1563} 2857}
1564 2858
1565void 2859void
1566ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2860ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1567{ 2861{
1568 timeout_blocktime = interval; 2862 timeout_blocktime = interval;
1569} 2863}
1570 2864
1571void 2865void
1572ev_set_userdata (EV_P_ void *data) 2866ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
1573{ 2867{
1574 userdata = data; 2868 userdata = data;
1575} 2869}
1576 2870
1577void * 2871void *
1578ev_userdata (EV_P) 2872ev_userdata (EV_P) EV_NOEXCEPT
1579{ 2873{
1580 return userdata; 2874 return userdata;
1581} 2875}
1582 2876
2877void
1583void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2878ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
1584{ 2879{
1585 invoke_cb = invoke_pending_cb; 2880 invoke_cb = invoke_pending_cb;
1586} 2881}
1587 2882
2883void
1588void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2884ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
1589{ 2885{
1590 release_cb = release; 2886 release_cb = release;
1591 acquire_cb = acquire; 2887 acquire_cb = acquire;
1592} 2888}
1593#endif 2889#endif
1594 2890
1595/* initialise a loop structure, must be zero-initialised */ 2891/* initialise a loop structure, must be zero-initialised */
1596static void noinline 2892noinline ecb_cold
2893static void
1597loop_init (EV_P_ unsigned int flags) 2894loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
1598{ 2895{
1599 if (!backend) 2896 if (!backend)
1600 { 2897 {
2898 origflags = flags;
2899
1601#if EV_USE_REALTIME 2900#if EV_USE_REALTIME
1602 if (!have_realtime) 2901 if (!have_realtime)
1603 { 2902 {
1604 struct timespec ts; 2903 struct timespec ts;
1605 2904
… …
1627 if (!(flags & EVFLAG_NOENV) 2926 if (!(flags & EVFLAG_NOENV)
1628 && !enable_secure () 2927 && !enable_secure ()
1629 && getenv ("LIBEV_FLAGS")) 2928 && getenv ("LIBEV_FLAGS"))
1630 flags = atoi (getenv ("LIBEV_FLAGS")); 2929 flags = atoi (getenv ("LIBEV_FLAGS"));
1631 2930
1632 ev_rt_now = ev_time (); 2931 ev_rt_now = ev_time ();
1633 mn_now = get_clock (); 2932 mn_now = get_clock ();
1634 now_floor = mn_now; 2933 now_floor = mn_now;
1635 rtmn_diff = ev_rt_now - mn_now; 2934 rtmn_diff = ev_rt_now - mn_now;
1636#if EV_FEATURE_API 2935#if EV_FEATURE_API
1637 invoke_cb = ev_invoke_pending; 2936 invoke_cb = ev_invoke_pending;
1638#endif 2937#endif
1639 2938
1640 io_blocktime = 0.; 2939 io_blocktime = 0.;
1641 timeout_blocktime = 0.; 2940 timeout_blocktime = 0.;
1642 backend = 0; 2941 backend = 0;
1643 backend_fd = -1; 2942 backend_fd = -1;
1644 sig_pending = 0; 2943 sig_pending = 0;
1645#if EV_ASYNC_ENABLE 2944#if EV_ASYNC_ENABLE
1646 async_pending = 0; 2945 async_pending = 0;
1647#endif 2946#endif
2947 pipe_write_skipped = 0;
2948 pipe_write_wanted = 0;
2949 evpipe [0] = -1;
2950 evpipe [1] = -1;
1648#if EV_USE_INOTIFY 2951#if EV_USE_INOTIFY
1649 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2952 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1650#endif 2953#endif
1651#if EV_USE_SIGNALFD 2954#if EV_USE_SIGNALFD
1652 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2955 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1653#endif 2956#endif
1654 2957
1655 if (!(flags & 0x0000ffffU)) 2958 if (!(flags & EVBACKEND_MASK))
1656 flags |= ev_recommended_backends (); 2959 flags |= ev_recommended_backends ();
1657 2960
2961#if EV_USE_IOCP
2962 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2963#endif
1658#if EV_USE_PORT 2964#if EV_USE_PORT
1659 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2965 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1660#endif 2966#endif
1661#if EV_USE_KQUEUE 2967#if EV_USE_KQUEUE
1662 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2968 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
2969#endif
2970#if EV_USE_LINUXAIO
2971 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
1663#endif 2972#endif
1664#if EV_USE_EPOLL 2973#if EV_USE_EPOLL
1665 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 2974 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
1666#endif 2975#endif
1667#if EV_USE_POLL 2976#if EV_USE_POLL
1668 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 2977 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
1669#endif 2978#endif
1670#if EV_USE_SELECT 2979#if EV_USE_SELECT
1671 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2980 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
1672#endif 2981#endif
1673 2982
1674 ev_prepare_init (&pending_w, pendingcb); 2983 ev_prepare_init (&pending_w, pendingcb);
1675 2984
1676#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2985#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
… …
1679#endif 2988#endif
1680 } 2989 }
1681} 2990}
1682 2991
1683/* free up a loop structure */ 2992/* free up a loop structure */
1684static void noinline 2993ecb_cold
2994void
1685loop_destroy (EV_P) 2995ev_loop_destroy (EV_P)
1686{ 2996{
1687 int i; 2997 int i;
2998
2999#if EV_MULTIPLICITY
3000 /* mimic free (0) */
3001 if (!EV_A)
3002 return;
3003#endif
3004
3005#if EV_CLEANUP_ENABLE
3006 /* queue cleanup watchers (and execute them) */
3007 if (expect_false (cleanupcnt))
3008 {
3009 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
3010 EV_INVOKE_PENDING;
3011 }
3012#endif
3013
3014#if EV_CHILD_ENABLE
3015 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
3016 {
3017 ev_ref (EV_A); /* child watcher */
3018 ev_signal_stop (EV_A_ &childev);
3019 }
3020#endif
1688 3021
1689 if (ev_is_active (&pipe_w)) 3022 if (ev_is_active (&pipe_w))
1690 { 3023 {
1691 /*ev_ref (EV_A);*/ 3024 /*ev_ref (EV_A);*/
1692 /*ev_io_stop (EV_A_ &pipe_w);*/ 3025 /*ev_io_stop (EV_A_ &pipe_w);*/
1693 3026
1694#if EV_USE_EVENTFD
1695 if (evfd >= 0)
1696 close (evfd);
1697#endif
1698
1699 if (evpipe [0] >= 0)
1700 {
1701 EV_WIN32_CLOSE_FD (evpipe [0]); 3027 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1702 EV_WIN32_CLOSE_FD (evpipe [1]); 3028 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1703 }
1704 } 3029 }
1705 3030
1706#if EV_USE_SIGNALFD 3031#if EV_USE_SIGNALFD
1707 if (ev_is_active (&sigfd_w)) 3032 if (ev_is_active (&sigfd_w))
1708 close (sigfd); 3033 close (sigfd);
… …
1714#endif 3039#endif
1715 3040
1716 if (backend_fd >= 0) 3041 if (backend_fd >= 0)
1717 close (backend_fd); 3042 close (backend_fd);
1718 3043
3044#if EV_USE_IOCP
3045 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
3046#endif
1719#if EV_USE_PORT 3047#if EV_USE_PORT
1720 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3048 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1721#endif 3049#endif
1722#if EV_USE_KQUEUE 3050#if EV_USE_KQUEUE
1723 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3051 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
3052#endif
3053#if EV_USE_LINUXAIO
3054 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
1724#endif 3055#endif
1725#if EV_USE_EPOLL 3056#if EV_USE_EPOLL
1726 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3057 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
1727#endif 3058#endif
1728#if EV_USE_POLL 3059#if EV_USE_POLL
1729 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3060 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
1730#endif 3061#endif
1731#if EV_USE_SELECT 3062#if EV_USE_SELECT
1732 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3063 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
1733#endif 3064#endif
1734 3065
1735 for (i = NUMPRI; i--; ) 3066 for (i = NUMPRI; i--; )
1736 { 3067 {
1737 array_free (pending, [i]); 3068 array_free (pending, [i]);
… …
1750 array_free (periodic, EMPTY); 3081 array_free (periodic, EMPTY);
1751#endif 3082#endif
1752#if EV_FORK_ENABLE 3083#if EV_FORK_ENABLE
1753 array_free (fork, EMPTY); 3084 array_free (fork, EMPTY);
1754#endif 3085#endif
3086#if EV_CLEANUP_ENABLE
3087 array_free (cleanup, EMPTY);
3088#endif
1755 array_free (prepare, EMPTY); 3089 array_free (prepare, EMPTY);
1756 array_free (check, EMPTY); 3090 array_free (check, EMPTY);
1757#if EV_ASYNC_ENABLE 3091#if EV_ASYNC_ENABLE
1758 array_free (async, EMPTY); 3092 array_free (async, EMPTY);
1759#endif 3093#endif
1760 3094
1761 backend = 0; 3095 backend = 0;
3096
3097#if EV_MULTIPLICITY
3098 if (ev_is_default_loop (EV_A))
3099#endif
3100 ev_default_loop_ptr = 0;
3101#if EV_MULTIPLICITY
3102 else
3103 ev_free (EV_A);
3104#endif
1762} 3105}
1763 3106
1764#if EV_USE_INOTIFY 3107#if EV_USE_INOTIFY
1765inline_size void infy_fork (EV_P); 3108inline_size void infy_fork (EV_P);
1766#endif 3109#endif
1767 3110
1768inline_size void 3111inline_size void
1769loop_fork (EV_P) 3112loop_fork (EV_P)
1770{ 3113{
1771#if EV_USE_PORT 3114#if EV_USE_PORT
1772 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3115 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1773#endif 3116#endif
1774#if EV_USE_KQUEUE 3117#if EV_USE_KQUEUE
1775 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 3118 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
3119#endif
3120#if EV_USE_LINUXAIO
3121 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
1776#endif 3122#endif
1777#if EV_USE_EPOLL 3123#if EV_USE_EPOLL
1778 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3124 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
1779#endif 3125#endif
1780#if EV_USE_INOTIFY 3126#if EV_USE_INOTIFY
1781 infy_fork (EV_A); 3127 infy_fork (EV_A);
1782#endif 3128#endif
1783 3129
3130#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1784 if (ev_is_active (&pipe_w)) 3131 if (ev_is_active (&pipe_w) && postfork != 2)
1785 { 3132 {
1786 /* this "locks" the handlers against writing to the pipe */ 3133 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1787 /* while we modify the fd vars */
1788 sig_pending = 1;
1789#if EV_ASYNC_ENABLE
1790 async_pending = 1;
1791#endif
1792 3134
1793 ev_ref (EV_A); 3135 ev_ref (EV_A);
1794 ev_io_stop (EV_A_ &pipe_w); 3136 ev_io_stop (EV_A_ &pipe_w);
1795 3137
1796#if EV_USE_EVENTFD
1797 if (evfd >= 0)
1798 close (evfd);
1799#endif
1800
1801 if (evpipe [0] >= 0) 3138 if (evpipe [0] >= 0)
1802 {
1803 EV_WIN32_CLOSE_FD (evpipe [0]); 3139 EV_WIN32_CLOSE_FD (evpipe [0]);
1804 EV_WIN32_CLOSE_FD (evpipe [1]);
1805 }
1806 3140
1807#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1808 evpipe_init (EV_A); 3141 evpipe_init (EV_A);
1809 /* now iterate over everything, in case we missed something */ 3142 /* iterate over everything, in case we missed something before */
1810 pipecb (EV_A_ &pipe_w, EV_READ); 3143 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1811#endif
1812 } 3144 }
3145#endif
1813 3146
1814 postfork = 0; 3147 postfork = 0;
1815} 3148}
1816 3149
1817#if EV_MULTIPLICITY 3150#if EV_MULTIPLICITY
1818 3151
3152ecb_cold
1819struct ev_loop * 3153struct ev_loop *
1820ev_loop_new (unsigned int flags) 3154ev_loop_new (unsigned int flags) EV_NOEXCEPT
1821{ 3155{
1822 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3156 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1823 3157
1824 memset (EV_A, 0, sizeof (struct ev_loop)); 3158 memset (EV_A, 0, sizeof (struct ev_loop));
1825 loop_init (EV_A_ flags); 3159 loop_init (EV_A_ flags);
1826 3160
1827 if (ev_backend (EV_A)) 3161 if (ev_backend (EV_A))
1828 return EV_A; 3162 return EV_A;
1829 3163
3164 ev_free (EV_A);
1830 return 0; 3165 return 0;
1831} 3166}
1832 3167
1833void
1834ev_loop_destroy (EV_P)
1835{
1836 loop_destroy (EV_A);
1837 ev_free (loop);
1838}
1839
1840void
1841ev_loop_fork (EV_P)
1842{
1843 postfork = 1; /* must be in line with ev_default_fork */
1844}
1845#endif /* multiplicity */ 3168#endif /* multiplicity */
1846 3169
1847#if EV_VERIFY 3170#if EV_VERIFY
1848static void noinline 3171noinline ecb_cold
3172static void
1849verify_watcher (EV_P_ W w) 3173verify_watcher (EV_P_ W w)
1850{ 3174{
1851 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3175 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1852 3176
1853 if (w->pending) 3177 if (w->pending)
1854 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3178 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1855} 3179}
1856 3180
1857static void noinline 3181noinline ecb_cold
3182static void
1858verify_heap (EV_P_ ANHE *heap, int N) 3183verify_heap (EV_P_ ANHE *heap, int N)
1859{ 3184{
1860 int i; 3185 int i;
1861 3186
1862 for (i = HEAP0; i < N + HEAP0; ++i) 3187 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1867 3192
1868 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3193 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1869 } 3194 }
1870} 3195}
1871 3196
1872static void noinline 3197noinline ecb_cold
3198static void
1873array_verify (EV_P_ W *ws, int cnt) 3199array_verify (EV_P_ W *ws, int cnt)
1874{ 3200{
1875 while (cnt--) 3201 while (cnt--)
1876 { 3202 {
1877 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3203 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
1879 } 3205 }
1880} 3206}
1881#endif 3207#endif
1882 3208
1883#if EV_FEATURE_API 3209#if EV_FEATURE_API
1884void 3210void ecb_cold
1885ev_verify (EV_P) 3211ev_verify (EV_P) EV_NOEXCEPT
1886{ 3212{
1887#if EV_VERIFY 3213#if EV_VERIFY
1888 int i; 3214 int i;
1889 WL w; 3215 WL w, w2;
1890 3216
1891 assert (activecnt >= -1); 3217 assert (activecnt >= -1);
1892 3218
1893 assert (fdchangemax >= fdchangecnt); 3219 assert (fdchangemax >= fdchangecnt);
1894 for (i = 0; i < fdchangecnt; ++i) 3220 for (i = 0; i < fdchangecnt; ++i)
1895 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3221 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1896 3222
1897 assert (anfdmax >= 0); 3223 assert (anfdmax >= 0);
1898 for (i = 0; i < anfdmax; ++i) 3224 for (i = 0; i < anfdmax; ++i)
3225 {
3226 int j = 0;
3227
1899 for (w = anfds [i].head; w; w = w->next) 3228 for (w = w2 = anfds [i].head; w; w = w->next)
1900 { 3229 {
1901 verify_watcher (EV_A_ (W)w); 3230 verify_watcher (EV_A_ (W)w);
3231
3232 if (j++ & 1)
3233 {
3234 assert (("libev: io watcher list contains a loop", w != w2));
3235 w2 = w2->next;
3236 }
3237
1902 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3238 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1903 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 3239 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1904 } 3240 }
3241 }
1905 3242
1906 assert (timermax >= timercnt); 3243 assert (timermax >= timercnt);
1907 verify_heap (EV_A_ timers, timercnt); 3244 verify_heap (EV_A_ timers, timercnt);
1908 3245
1909#if EV_PERIODIC_ENABLE 3246#if EV_PERIODIC_ENABLE
… …
1924#if EV_FORK_ENABLE 3261#if EV_FORK_ENABLE
1925 assert (forkmax >= forkcnt); 3262 assert (forkmax >= forkcnt);
1926 array_verify (EV_A_ (W *)forks, forkcnt); 3263 array_verify (EV_A_ (W *)forks, forkcnt);
1927#endif 3264#endif
1928 3265
3266#if EV_CLEANUP_ENABLE
3267 assert (cleanupmax >= cleanupcnt);
3268 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
3269#endif
3270
1929#if EV_ASYNC_ENABLE 3271#if EV_ASYNC_ENABLE
1930 assert (asyncmax >= asynccnt); 3272 assert (asyncmax >= asynccnt);
1931 array_verify (EV_A_ (W *)asyncs, asynccnt); 3273 array_verify (EV_A_ (W *)asyncs, asynccnt);
1932#endif 3274#endif
1933 3275
… …
1950#endif 3292#endif
1951} 3293}
1952#endif 3294#endif
1953 3295
1954#if EV_MULTIPLICITY 3296#if EV_MULTIPLICITY
3297ecb_cold
1955struct ev_loop * 3298struct ev_loop *
1956ev_default_loop_init (unsigned int flags)
1957#else 3299#else
1958int 3300int
3301#endif
1959ev_default_loop (unsigned int flags) 3302ev_default_loop (unsigned int flags) EV_NOEXCEPT
1960#endif
1961{ 3303{
1962 if (!ev_default_loop_ptr) 3304 if (!ev_default_loop_ptr)
1963 { 3305 {
1964#if EV_MULTIPLICITY 3306#if EV_MULTIPLICITY
1965 EV_P = ev_default_loop_ptr = &default_loop_struct; 3307 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1984 3326
1985 return ev_default_loop_ptr; 3327 return ev_default_loop_ptr;
1986} 3328}
1987 3329
1988void 3330void
1989ev_default_destroy (void) 3331ev_loop_fork (EV_P) EV_NOEXCEPT
1990{ 3332{
1991#if EV_MULTIPLICITY 3333 postfork = 1;
1992 EV_P = ev_default_loop_ptr;
1993#endif
1994
1995 ev_default_loop_ptr = 0;
1996
1997#if EV_CHILD_ENABLE
1998 ev_ref (EV_A); /* child watcher */
1999 ev_signal_stop (EV_A_ &childev);
2000#endif
2001
2002 loop_destroy (EV_A);
2003}
2004
2005void
2006ev_default_fork (void)
2007{
2008#if EV_MULTIPLICITY
2009 EV_P = ev_default_loop_ptr;
2010#endif
2011
2012 postfork = 1; /* must be in line with ev_loop_fork */
2013} 3334}
2014 3335
2015/*****************************************************************************/ 3336/*****************************************************************************/
2016 3337
2017void 3338void
… …
2019{ 3340{
2020 EV_CB_INVOKE ((W)w, revents); 3341 EV_CB_INVOKE ((W)w, revents);
2021} 3342}
2022 3343
2023unsigned int 3344unsigned int
2024ev_pending_count (EV_P) 3345ev_pending_count (EV_P) EV_NOEXCEPT
2025{ 3346{
2026 int pri; 3347 int pri;
2027 unsigned int count = 0; 3348 unsigned int count = 0;
2028 3349
2029 for (pri = NUMPRI; pri--; ) 3350 for (pri = NUMPRI; pri--; )
2030 count += pendingcnt [pri]; 3351 count += pendingcnt [pri];
2031 3352
2032 return count; 3353 return count;
2033} 3354}
2034 3355
2035void noinline 3356noinline
3357void
2036ev_invoke_pending (EV_P) 3358ev_invoke_pending (EV_P)
2037{ 3359{
2038 int pri; 3360 pendingpri = NUMPRI;
2039 3361
2040 for (pri = NUMPRI; pri--; ) 3362 do
3363 {
3364 --pendingpri;
3365
3366 /* pendingpri possibly gets modified in the inner loop */
2041 while (pendingcnt [pri]) 3367 while (pendingcnt [pendingpri])
2042 { 3368 {
2043 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3369 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2044 3370
2045 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2046 /* ^ this is no longer true, as pending_w could be here */
2047
2048 p->w->pending = 0; 3371 p->w->pending = 0;
2049 EV_CB_INVOKE (p->w, p->events); 3372 EV_CB_INVOKE (p->w, p->events);
2050 EV_FREQUENT_CHECK; 3373 EV_FREQUENT_CHECK;
2051 } 3374 }
3375 }
3376 while (pendingpri);
2052} 3377}
2053 3378
2054#if EV_IDLE_ENABLE 3379#if EV_IDLE_ENABLE
2055/* make idle watchers pending. this handles the "call-idle */ 3380/* make idle watchers pending. this handles the "call-idle */
2056/* only when higher priorities are idle" logic */ 3381/* only when higher priorities are idle" logic */
… …
2113 feed_reverse_done (EV_A_ EV_TIMER); 3438 feed_reverse_done (EV_A_ EV_TIMER);
2114 } 3439 }
2115} 3440}
2116 3441
2117#if EV_PERIODIC_ENABLE 3442#if EV_PERIODIC_ENABLE
3443
3444noinline
3445static void
3446periodic_recalc (EV_P_ ev_periodic *w)
3447{
3448 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3449 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3450
3451 /* the above almost always errs on the low side */
3452 while (at <= ev_rt_now)
3453 {
3454 ev_tstamp nat = at + w->interval;
3455
3456 /* when resolution fails us, we use ev_rt_now */
3457 if (expect_false (nat == at))
3458 {
3459 at = ev_rt_now;
3460 break;
3461 }
3462
3463 at = nat;
3464 }
3465
3466 ev_at (w) = at;
3467}
3468
2118/* make periodics pending */ 3469/* make periodics pending */
2119inline_size void 3470inline_size void
2120periodics_reify (EV_P) 3471periodics_reify (EV_P)
2121{ 3472{
2122 EV_FREQUENT_CHECK; 3473 EV_FREQUENT_CHECK;
2123 3474
2124 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3475 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2125 { 3476 {
2126 int feed_count = 0;
2127
2128 do 3477 do
2129 { 3478 {
2130 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3479 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2131 3480
2132 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3481 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2141 ANHE_at_cache (periodics [HEAP0]); 3490 ANHE_at_cache (periodics [HEAP0]);
2142 downheap (periodics, periodiccnt, HEAP0); 3491 downheap (periodics, periodiccnt, HEAP0);
2143 } 3492 }
2144 else if (w->interval) 3493 else if (w->interval)
2145 { 3494 {
2146 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3495 periodic_recalc (EV_A_ w);
2147 /* if next trigger time is not sufficiently in the future, put it there */
2148 /* this might happen because of floating point inexactness */
2149 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2150 {
2151 ev_at (w) += w->interval;
2152
2153 /* if interval is unreasonably low we might still have a time in the past */
2154 /* so correct this. this will make the periodic very inexact, but the user */
2155 /* has effectively asked to get triggered more often than possible */
2156 if (ev_at (w) < ev_rt_now)
2157 ev_at (w) = ev_rt_now;
2158 }
2159
2160 ANHE_at_cache (periodics [HEAP0]); 3496 ANHE_at_cache (periodics [HEAP0]);
2161 downheap (periodics, periodiccnt, HEAP0); 3497 downheap (periodics, periodiccnt, HEAP0);
2162 } 3498 }
2163 else 3499 else
2164 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3500 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2171 feed_reverse_done (EV_A_ EV_PERIODIC); 3507 feed_reverse_done (EV_A_ EV_PERIODIC);
2172 } 3508 }
2173} 3509}
2174 3510
2175/* simply recalculate all periodics */ 3511/* simply recalculate all periodics */
2176/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 3512/* TODO: maybe ensure that at least one event happens when jumping forward? */
2177static void noinline 3513noinline ecb_cold
3514static void
2178periodics_reschedule (EV_P) 3515periodics_reschedule (EV_P)
2179{ 3516{
2180 int i; 3517 int i;
2181 3518
2182 /* adjust periodics after time jump */ 3519 /* adjust periodics after time jump */
… …
2185 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3522 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2186 3523
2187 if (w->reschedule_cb) 3524 if (w->reschedule_cb)
2188 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3525 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2189 else if (w->interval) 3526 else if (w->interval)
2190 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3527 periodic_recalc (EV_A_ w);
2191 3528
2192 ANHE_at_cache (periodics [i]); 3529 ANHE_at_cache (periodics [i]);
2193 } 3530 }
2194 3531
2195 reheap (periodics, periodiccnt); 3532 reheap (periodics, periodiccnt);
2196} 3533}
2197#endif 3534#endif
2198 3535
2199/* adjust all timers by a given offset */ 3536/* adjust all timers by a given offset */
2200static void noinline 3537noinline ecb_cold
3538static void
2201timers_reschedule (EV_P_ ev_tstamp adjust) 3539timers_reschedule (EV_P_ ev_tstamp adjust)
2202{ 3540{
2203 int i; 3541 int i;
2204 3542
2205 for (i = 0; i < timercnt; ++i) 3543 for (i = 0; i < timercnt; ++i)
… …
2242 * doesn't hurt either as we only do this on time-jumps or 3580 * doesn't hurt either as we only do this on time-jumps or
2243 * in the unlikely event of having been preempted here. 3581 * in the unlikely event of having been preempted here.
2244 */ 3582 */
2245 for (i = 4; --i; ) 3583 for (i = 4; --i; )
2246 { 3584 {
3585 ev_tstamp diff;
2247 rtmn_diff = ev_rt_now - mn_now; 3586 rtmn_diff = ev_rt_now - mn_now;
2248 3587
3588 diff = odiff - rtmn_diff;
3589
2249 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3590 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2250 return; /* all is well */ 3591 return; /* all is well */
2251 3592
2252 ev_rt_now = ev_time (); 3593 ev_rt_now = ev_time ();
2253 mn_now = get_clock (); 3594 mn_now = get_clock ();
2254 now_floor = mn_now; 3595 now_floor = mn_now;
… …
2276 3617
2277 mn_now = ev_rt_now; 3618 mn_now = ev_rt_now;
2278 } 3619 }
2279} 3620}
2280 3621
2281void 3622int
2282ev_loop (EV_P_ int flags) 3623ev_run (EV_P_ int flags)
2283{ 3624{
2284#if EV_FEATURE_API 3625#if EV_FEATURE_API
2285 ++loop_depth; 3626 ++loop_depth;
2286#endif 3627#endif
2287 3628
2288 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 3629 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2289 3630
2290 loop_done = EVUNLOOP_CANCEL; 3631 loop_done = EVBREAK_CANCEL;
2291 3632
2292 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 3633 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2293 3634
2294 do 3635 do
2295 { 3636 {
… …
2338 /* calculate blocking time */ 3679 /* calculate blocking time */
2339 { 3680 {
2340 ev_tstamp waittime = 0.; 3681 ev_tstamp waittime = 0.;
2341 ev_tstamp sleeptime = 0.; 3682 ev_tstamp sleeptime = 0.;
2342 3683
3684 /* remember old timestamp for io_blocktime calculation */
3685 ev_tstamp prev_mn_now = mn_now;
3686
3687 /* update time to cancel out callback processing overhead */
3688 time_update (EV_A_ 1e100);
3689
3690 /* from now on, we want a pipe-wake-up */
3691 pipe_write_wanted = 1;
3692
3693 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3694
2343 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3695 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2344 { 3696 {
2345 /* remember old timestamp for io_blocktime calculation */
2346 ev_tstamp prev_mn_now = mn_now;
2347
2348 /* update time to cancel out callback processing overhead */
2349 time_update (EV_A_ 1e100);
2350
2351 waittime = MAX_BLOCKTIME; 3697 waittime = MAX_BLOCKTIME;
2352 3698
2353 if (timercnt) 3699 if (timercnt)
2354 { 3700 {
2355 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3701 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2356 if (waittime > to) waittime = to; 3702 if (waittime > to) waittime = to;
2357 } 3703 }
2358 3704
2359#if EV_PERIODIC_ENABLE 3705#if EV_PERIODIC_ENABLE
2360 if (periodiccnt) 3706 if (periodiccnt)
2361 { 3707 {
2362 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3708 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2363 if (waittime > to) waittime = to; 3709 if (waittime > to) waittime = to;
2364 } 3710 }
2365#endif 3711#endif
2366 3712
2367 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3713 /* don't let timeouts decrease the waittime below timeout_blocktime */
2368 if (expect_false (waittime < timeout_blocktime)) 3714 if (expect_false (waittime < timeout_blocktime))
2369 waittime = timeout_blocktime; 3715 waittime = timeout_blocktime;
3716
3717 /* at this point, we NEED to wait, so we have to ensure */
3718 /* to pass a minimum nonzero value to the backend */
3719 if (expect_false (waittime < backend_mintime))
3720 waittime = backend_mintime;
2370 3721
2371 /* extra check because io_blocktime is commonly 0 */ 3722 /* extra check because io_blocktime is commonly 0 */
2372 if (expect_false (io_blocktime)) 3723 if (expect_false (io_blocktime))
2373 { 3724 {
2374 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3725 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2375 3726
2376 if (sleeptime > waittime - backend_fudge) 3727 if (sleeptime > waittime - backend_mintime)
2377 sleeptime = waittime - backend_fudge; 3728 sleeptime = waittime - backend_mintime;
2378 3729
2379 if (expect_true (sleeptime > 0.)) 3730 if (expect_true (sleeptime > 0.))
2380 { 3731 {
2381 ev_sleep (sleeptime); 3732 ev_sleep (sleeptime);
2382 waittime -= sleeptime; 3733 waittime -= sleeptime;
… …
2385 } 3736 }
2386 3737
2387#if EV_FEATURE_API 3738#if EV_FEATURE_API
2388 ++loop_count; 3739 ++loop_count;
2389#endif 3740#endif
2390 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3741 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2391 backend_poll (EV_A_ waittime); 3742 backend_poll (EV_A_ waittime);
2392 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 3743 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3744
3745 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3746
3747 ECB_MEMORY_FENCE_ACQUIRE;
3748 if (pipe_write_skipped)
3749 {
3750 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3751 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3752 }
2393 3753
2394 /* update ev_rt_now, do magic */ 3754 /* update ev_rt_now, do magic */
2395 time_update (EV_A_ waittime + sleeptime); 3755 time_update (EV_A_ waittime + sleeptime);
2396 } 3756 }
2397 3757
… …
2415 EV_INVOKE_PENDING; 3775 EV_INVOKE_PENDING;
2416 } 3776 }
2417 while (expect_true ( 3777 while (expect_true (
2418 activecnt 3778 activecnt
2419 && !loop_done 3779 && !loop_done
2420 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3780 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2421 )); 3781 ));
2422 3782
2423 if (loop_done == EVUNLOOP_ONE) 3783 if (loop_done == EVBREAK_ONE)
2424 loop_done = EVUNLOOP_CANCEL; 3784 loop_done = EVBREAK_CANCEL;
2425 3785
2426#if EV_FEATURE_API 3786#if EV_FEATURE_API
2427 --loop_depth; 3787 --loop_depth;
2428#endif 3788#endif
2429}
2430 3789
3790 return activecnt;
3791}
3792
2431void 3793void
2432ev_unloop (EV_P_ int how) 3794ev_break (EV_P_ int how) EV_NOEXCEPT
2433{ 3795{
2434 loop_done = how; 3796 loop_done = how;
2435} 3797}
2436 3798
2437void 3799void
2438ev_ref (EV_P) 3800ev_ref (EV_P) EV_NOEXCEPT
2439{ 3801{
2440 ++activecnt; 3802 ++activecnt;
2441} 3803}
2442 3804
2443void 3805void
2444ev_unref (EV_P) 3806ev_unref (EV_P) EV_NOEXCEPT
2445{ 3807{
2446 --activecnt; 3808 --activecnt;
2447} 3809}
2448 3810
2449void 3811void
2450ev_now_update (EV_P) 3812ev_now_update (EV_P) EV_NOEXCEPT
2451{ 3813{
2452 time_update (EV_A_ 1e100); 3814 time_update (EV_A_ 1e100);
2453} 3815}
2454 3816
2455void 3817void
2456ev_suspend (EV_P) 3818ev_suspend (EV_P) EV_NOEXCEPT
2457{ 3819{
2458 ev_now_update (EV_A); 3820 ev_now_update (EV_A);
2459} 3821}
2460 3822
2461void 3823void
2462ev_resume (EV_P) 3824ev_resume (EV_P) EV_NOEXCEPT
2463{ 3825{
2464 ev_tstamp mn_prev = mn_now; 3826 ev_tstamp mn_prev = mn_now;
2465 3827
2466 ev_now_update (EV_A); 3828 ev_now_update (EV_A);
2467 timers_reschedule (EV_A_ mn_now - mn_prev); 3829 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2506 w->pending = 0; 3868 w->pending = 0;
2507 } 3869 }
2508} 3870}
2509 3871
2510int 3872int
2511ev_clear_pending (EV_P_ void *w) 3873ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
2512{ 3874{
2513 W w_ = (W)w; 3875 W w_ = (W)w;
2514 int pending = w_->pending; 3876 int pending = w_->pending;
2515 3877
2516 if (expect_true (pending)) 3878 if (expect_true (pending))
… …
2548 w->active = 0; 3910 w->active = 0;
2549} 3911}
2550 3912
2551/*****************************************************************************/ 3913/*****************************************************************************/
2552 3914
2553void noinline 3915noinline
3916void
2554ev_io_start (EV_P_ ev_io *w) 3917ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
2555{ 3918{
2556 int fd = w->fd; 3919 int fd = w->fd;
2557 3920
2558 if (expect_false (ev_is_active (w))) 3921 if (expect_false (ev_is_active (w)))
2559 return; 3922 return;
2560 3923
2561 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 3924 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2562 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 3925 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2563 3926
3927#if EV_VERIFY >= 2
3928 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
3929#endif
2564 EV_FREQUENT_CHECK; 3930 EV_FREQUENT_CHECK;
2565 3931
2566 ev_start (EV_A_ (W)w, 1); 3932 ev_start (EV_A_ (W)w, 1);
2567 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3933 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
2568 wlist_add (&anfds[fd].head, (WL)w); 3934 wlist_add (&anfds[fd].head, (WL)w);
3935
3936 /* common bug, apparently */
3937 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
2569 3938
2570 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3939 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2571 w->events &= ~EV__IOFDSET; 3940 w->events &= ~EV__IOFDSET;
2572 3941
2573 EV_FREQUENT_CHECK; 3942 EV_FREQUENT_CHECK;
2574} 3943}
2575 3944
2576void noinline 3945noinline
3946void
2577ev_io_stop (EV_P_ ev_io *w) 3947ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
2578{ 3948{
2579 clear_pending (EV_A_ (W)w); 3949 clear_pending (EV_A_ (W)w);
2580 if (expect_false (!ev_is_active (w))) 3950 if (expect_false (!ev_is_active (w)))
2581 return; 3951 return;
2582 3952
2583 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 3953 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2584 3954
3955#if EV_VERIFY >= 2
3956 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
3957#endif
2585 EV_FREQUENT_CHECK; 3958 EV_FREQUENT_CHECK;
2586 3959
2587 wlist_del (&anfds[w->fd].head, (WL)w); 3960 wlist_del (&anfds[w->fd].head, (WL)w);
2588 ev_stop (EV_A_ (W)w); 3961 ev_stop (EV_A_ (W)w);
2589 3962
2590 fd_change (EV_A_ w->fd, 1); 3963 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2591 3964
2592 EV_FREQUENT_CHECK; 3965 EV_FREQUENT_CHECK;
2593} 3966}
2594 3967
2595void noinline 3968noinline
3969void
2596ev_timer_start (EV_P_ ev_timer *w) 3970ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
2597{ 3971{
2598 if (expect_false (ev_is_active (w))) 3972 if (expect_false (ev_is_active (w)))
2599 return; 3973 return;
2600 3974
2601 ev_at (w) += mn_now; 3975 ev_at (w) += mn_now;
… …
2604 3978
2605 EV_FREQUENT_CHECK; 3979 EV_FREQUENT_CHECK;
2606 3980
2607 ++timercnt; 3981 ++timercnt;
2608 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 3982 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
2609 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 3983 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
2610 ANHE_w (timers [ev_active (w)]) = (WT)w; 3984 ANHE_w (timers [ev_active (w)]) = (WT)w;
2611 ANHE_at_cache (timers [ev_active (w)]); 3985 ANHE_at_cache (timers [ev_active (w)]);
2612 upheap (timers, ev_active (w)); 3986 upheap (timers, ev_active (w));
2613 3987
2614 EV_FREQUENT_CHECK; 3988 EV_FREQUENT_CHECK;
2615 3989
2616 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3990 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2617} 3991}
2618 3992
2619void noinline 3993noinline
3994void
2620ev_timer_stop (EV_P_ ev_timer *w) 3995ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
2621{ 3996{
2622 clear_pending (EV_A_ (W)w); 3997 clear_pending (EV_A_ (W)w);
2623 if (expect_false (!ev_is_active (w))) 3998 if (expect_false (!ev_is_active (w)))
2624 return; 3999 return;
2625 4000
… …
2644 ev_stop (EV_A_ (W)w); 4019 ev_stop (EV_A_ (W)w);
2645 4020
2646 EV_FREQUENT_CHECK; 4021 EV_FREQUENT_CHECK;
2647} 4022}
2648 4023
2649void noinline 4024noinline
4025void
2650ev_timer_again (EV_P_ ev_timer *w) 4026ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
2651{ 4027{
2652 EV_FREQUENT_CHECK; 4028 EV_FREQUENT_CHECK;
4029
4030 clear_pending (EV_A_ (W)w);
2653 4031
2654 if (ev_is_active (w)) 4032 if (ev_is_active (w))
2655 { 4033 {
2656 if (w->repeat) 4034 if (w->repeat)
2657 { 4035 {
… …
2670 4048
2671 EV_FREQUENT_CHECK; 4049 EV_FREQUENT_CHECK;
2672} 4050}
2673 4051
2674ev_tstamp 4052ev_tstamp
2675ev_timer_remaining (EV_P_ ev_timer *w) 4053ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
2676{ 4054{
2677 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4055 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2678} 4056}
2679 4057
2680#if EV_PERIODIC_ENABLE 4058#if EV_PERIODIC_ENABLE
2681void noinline 4059noinline
4060void
2682ev_periodic_start (EV_P_ ev_periodic *w) 4061ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
2683{ 4062{
2684 if (expect_false (ev_is_active (w))) 4063 if (expect_false (ev_is_active (w)))
2685 return; 4064 return;
2686 4065
2687 if (w->reschedule_cb) 4066 if (w->reschedule_cb)
2688 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4067 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2689 else if (w->interval) 4068 else if (w->interval)
2690 { 4069 {
2691 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 4070 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2692 /* this formula differs from the one in periodic_reify because we do not always round up */ 4071 periodic_recalc (EV_A_ w);
2693 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2694 } 4072 }
2695 else 4073 else
2696 ev_at (w) = w->offset; 4074 ev_at (w) = w->offset;
2697 4075
2698 EV_FREQUENT_CHECK; 4076 EV_FREQUENT_CHECK;
2699 4077
2700 ++periodiccnt; 4078 ++periodiccnt;
2701 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4079 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2702 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4080 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
2703 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4081 ANHE_w (periodics [ev_active (w)]) = (WT)w;
2704 ANHE_at_cache (periodics [ev_active (w)]); 4082 ANHE_at_cache (periodics [ev_active (w)]);
2705 upheap (periodics, ev_active (w)); 4083 upheap (periodics, ev_active (w));
2706 4084
2707 EV_FREQUENT_CHECK; 4085 EV_FREQUENT_CHECK;
2708 4086
2709 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4087 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2710} 4088}
2711 4089
2712void noinline 4090noinline
4091void
2713ev_periodic_stop (EV_P_ ev_periodic *w) 4092ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
2714{ 4093{
2715 clear_pending (EV_A_ (W)w); 4094 clear_pending (EV_A_ (W)w);
2716 if (expect_false (!ev_is_active (w))) 4095 if (expect_false (!ev_is_active (w)))
2717 return; 4096 return;
2718 4097
… …
2735 ev_stop (EV_A_ (W)w); 4114 ev_stop (EV_A_ (W)w);
2736 4115
2737 EV_FREQUENT_CHECK; 4116 EV_FREQUENT_CHECK;
2738} 4117}
2739 4118
2740void noinline 4119noinline
4120void
2741ev_periodic_again (EV_P_ ev_periodic *w) 4121ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
2742{ 4122{
2743 /* TODO: use adjustheap and recalculation */ 4123 /* TODO: use adjustheap and recalculation */
2744 ev_periodic_stop (EV_A_ w); 4124 ev_periodic_stop (EV_A_ w);
2745 ev_periodic_start (EV_A_ w); 4125 ev_periodic_start (EV_A_ w);
2746} 4126}
… …
2750# define SA_RESTART 0 4130# define SA_RESTART 0
2751#endif 4131#endif
2752 4132
2753#if EV_SIGNAL_ENABLE 4133#if EV_SIGNAL_ENABLE
2754 4134
2755void noinline 4135noinline
4136void
2756ev_signal_start (EV_P_ ev_signal *w) 4137ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
2757{ 4138{
2758 if (expect_false (ev_is_active (w))) 4139 if (expect_false (ev_is_active (w)))
2759 return; 4140 return;
2760 4141
2761 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4142 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
… …
2763#if EV_MULTIPLICITY 4144#if EV_MULTIPLICITY
2764 assert (("libev: a signal must not be attached to two different loops", 4145 assert (("libev: a signal must not be attached to two different loops",
2765 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4146 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2766 4147
2767 signals [w->signum - 1].loop = EV_A; 4148 signals [w->signum - 1].loop = EV_A;
4149 ECB_MEMORY_FENCE_RELEASE;
2768#endif 4150#endif
2769 4151
2770 EV_FREQUENT_CHECK; 4152 EV_FREQUENT_CHECK;
2771 4153
2772#if EV_USE_SIGNALFD 4154#if EV_USE_SIGNALFD
… …
2819 sa.sa_handler = ev_sighandler; 4201 sa.sa_handler = ev_sighandler;
2820 sigfillset (&sa.sa_mask); 4202 sigfillset (&sa.sa_mask);
2821 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 4203 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2822 sigaction (w->signum, &sa, 0); 4204 sigaction (w->signum, &sa, 0);
2823 4205
4206 if (origflags & EVFLAG_NOSIGMASK)
4207 {
2824 sigemptyset (&sa.sa_mask); 4208 sigemptyset (&sa.sa_mask);
2825 sigaddset (&sa.sa_mask, w->signum); 4209 sigaddset (&sa.sa_mask, w->signum);
2826 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 4210 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
4211 }
2827#endif 4212#endif
2828 } 4213 }
2829 4214
2830 EV_FREQUENT_CHECK; 4215 EV_FREQUENT_CHECK;
2831} 4216}
2832 4217
2833void noinline 4218noinline
4219void
2834ev_signal_stop (EV_P_ ev_signal *w) 4220ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
2835{ 4221{
2836 clear_pending (EV_A_ (W)w); 4222 clear_pending (EV_A_ (W)w);
2837 if (expect_false (!ev_is_active (w))) 4223 if (expect_false (!ev_is_active (w)))
2838 return; 4224 return;
2839 4225
… …
2870#endif 4256#endif
2871 4257
2872#if EV_CHILD_ENABLE 4258#if EV_CHILD_ENABLE
2873 4259
2874void 4260void
2875ev_child_start (EV_P_ ev_child *w) 4261ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
2876{ 4262{
2877#if EV_MULTIPLICITY 4263#if EV_MULTIPLICITY
2878 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4264 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2879#endif 4265#endif
2880 if (expect_false (ev_is_active (w))) 4266 if (expect_false (ev_is_active (w)))
… …
2887 4273
2888 EV_FREQUENT_CHECK; 4274 EV_FREQUENT_CHECK;
2889} 4275}
2890 4276
2891void 4277void
2892ev_child_stop (EV_P_ ev_child *w) 4278ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
2893{ 4279{
2894 clear_pending (EV_A_ (W)w); 4280 clear_pending (EV_A_ (W)w);
2895 if (expect_false (!ev_is_active (w))) 4281 if (expect_false (!ev_is_active (w)))
2896 return; 4282 return;
2897 4283
… …
2914 4300
2915#define DEF_STAT_INTERVAL 5.0074891 4301#define DEF_STAT_INTERVAL 5.0074891
2916#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4302#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2917#define MIN_STAT_INTERVAL 0.1074891 4303#define MIN_STAT_INTERVAL 0.1074891
2918 4304
2919static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4305noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2920 4306
2921#if EV_USE_INOTIFY 4307#if EV_USE_INOTIFY
2922 4308
2923/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ 4309/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
2924# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4310# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2925 4311
2926static void noinline 4312noinline
4313static void
2927infy_add (EV_P_ ev_stat *w) 4314infy_add (EV_P_ ev_stat *w)
2928{ 4315{
2929 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); 4316 w->wd = inotify_add_watch (fs_fd, w->path,
4317 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4318 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4319 | IN_DONT_FOLLOW | IN_MASK_ADD);
2930 4320
2931 if (w->wd >= 0) 4321 if (w->wd >= 0)
2932 { 4322 {
2933 struct statfs sfs; 4323 struct statfs sfs;
2934 4324
… …
2938 4328
2939 if (!fs_2625) 4329 if (!fs_2625)
2940 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4330 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2941 else if (!statfs (w->path, &sfs) 4331 else if (!statfs (w->path, &sfs)
2942 && (sfs.f_type == 0x1373 /* devfs */ 4332 && (sfs.f_type == 0x1373 /* devfs */
4333 || sfs.f_type == 0x4006 /* fat */
4334 || sfs.f_type == 0x4d44 /* msdos */
2943 || sfs.f_type == 0xEF53 /* ext2/3 */ 4335 || sfs.f_type == 0xEF53 /* ext2/3 */
4336 || sfs.f_type == 0x72b6 /* jffs2 */
4337 || sfs.f_type == 0x858458f6 /* ramfs */
4338 || sfs.f_type == 0x5346544e /* ntfs */
2944 || sfs.f_type == 0x3153464a /* jfs */ 4339 || sfs.f_type == 0x3153464a /* jfs */
4340 || sfs.f_type == 0x9123683e /* btrfs */
2945 || sfs.f_type == 0x52654973 /* reiser3 */ 4341 || sfs.f_type == 0x52654973 /* reiser3 */
2946 || sfs.f_type == 0x01021994 /* tempfs */ 4342 || sfs.f_type == 0x01021994 /* tmpfs */
2947 || sfs.f_type == 0x58465342 /* xfs */)) 4343 || sfs.f_type == 0x58465342 /* xfs */))
2948 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4344 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
2949 else 4345 else
2950 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4346 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2951 } 4347 }
… …
2972 if (!pend || pend == path) 4368 if (!pend || pend == path)
2973 break; 4369 break;
2974 4370
2975 *pend = 0; 4371 *pend = 0;
2976 w->wd = inotify_add_watch (fs_fd, path, mask); 4372 w->wd = inotify_add_watch (fs_fd, path, mask);
2977 } 4373 }
2978 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 4374 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2979 } 4375 }
2980 } 4376 }
2981 4377
2982 if (w->wd >= 0) 4378 if (w->wd >= 0)
… …
2986 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4382 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2987 ev_timer_again (EV_A_ &w->timer); 4383 ev_timer_again (EV_A_ &w->timer);
2988 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4384 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2989} 4385}
2990 4386
2991static void noinline 4387noinline
4388static void
2992infy_del (EV_P_ ev_stat *w) 4389infy_del (EV_P_ ev_stat *w)
2993{ 4390{
2994 int slot; 4391 int slot;
2995 int wd = w->wd; 4392 int wd = w->wd;
2996 4393
… …
3003 4400
3004 /* remove this watcher, if others are watching it, they will rearm */ 4401 /* remove this watcher, if others are watching it, they will rearm */
3005 inotify_rm_watch (fs_fd, wd); 4402 inotify_rm_watch (fs_fd, wd);
3006} 4403}
3007 4404
3008static void noinline 4405noinline
4406static void
3009infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4407infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
3010{ 4408{
3011 if (slot < 0) 4409 if (slot < 0)
3012 /* overflow, need to check for all hash slots */ 4410 /* overflow, need to check for all hash slots */
3013 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4411 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
3049 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4447 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3050 ofs += sizeof (struct inotify_event) + ev->len; 4448 ofs += sizeof (struct inotify_event) + ev->len;
3051 } 4449 }
3052} 4450}
3053 4451
3054inline_size unsigned int
3055ev_linux_version (void)
3056{
3057 struct utsname buf;
3058 unsigned int v;
3059 int i;
3060 char *p = buf.release;
3061
3062 if (uname (&buf))
3063 return 0;
3064
3065 for (i = 3+1; --i; )
3066 {
3067 unsigned int c = 0;
3068
3069 for (;;)
3070 {
3071 if (*p >= '0' && *p <= '9')
3072 c = c * 10 + *p++ - '0';
3073 else
3074 {
3075 p += *p == '.';
3076 break;
3077 }
3078 }
3079
3080 v = (v << 8) | c;
3081 }
3082
3083 return v;
3084}
3085
3086inline_size void 4452inline_size ecb_cold
4453void
3087ev_check_2625 (EV_P) 4454ev_check_2625 (EV_P)
3088{ 4455{
3089 /* kernels < 2.6.25 are borked 4456 /* kernels < 2.6.25 are borked
3090 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4457 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3091 */ 4458 */
… …
3096} 4463}
3097 4464
3098inline_size int 4465inline_size int
3099infy_newfd (void) 4466infy_newfd (void)
3100{ 4467{
3101#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4468#if defined IN_CLOEXEC && defined IN_NONBLOCK
3102 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4469 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3103 if (fd >= 0) 4470 if (fd >= 0)
3104 return fd; 4471 return fd;
3105#endif 4472#endif
3106 return inotify_init (); 4473 return inotify_init ();
… …
3181#else 4548#else
3182# define EV_LSTAT(p,b) lstat (p, b) 4549# define EV_LSTAT(p,b) lstat (p, b)
3183#endif 4550#endif
3184 4551
3185void 4552void
3186ev_stat_stat (EV_P_ ev_stat *w) 4553ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
3187{ 4554{
3188 if (lstat (w->path, &w->attr) < 0) 4555 if (lstat (w->path, &w->attr) < 0)
3189 w->attr.st_nlink = 0; 4556 w->attr.st_nlink = 0;
3190 else if (!w->attr.st_nlink) 4557 else if (!w->attr.st_nlink)
3191 w->attr.st_nlink = 1; 4558 w->attr.st_nlink = 1;
3192} 4559}
3193 4560
3194static void noinline 4561noinline
4562static void
3195stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4563stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3196{ 4564{
3197 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4565 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3198 4566
3199 ev_statdata prev = w->attr; 4567 ev_statdata prev = w->attr;
… …
3230 ev_feed_event (EV_A_ w, EV_STAT); 4598 ev_feed_event (EV_A_ w, EV_STAT);
3231 } 4599 }
3232} 4600}
3233 4601
3234void 4602void
3235ev_stat_start (EV_P_ ev_stat *w) 4603ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
3236{ 4604{
3237 if (expect_false (ev_is_active (w))) 4605 if (expect_false (ev_is_active (w)))
3238 return; 4606 return;
3239 4607
3240 ev_stat_stat (EV_A_ w); 4608 ev_stat_stat (EV_A_ w);
… …
3261 4629
3262 EV_FREQUENT_CHECK; 4630 EV_FREQUENT_CHECK;
3263} 4631}
3264 4632
3265void 4633void
3266ev_stat_stop (EV_P_ ev_stat *w) 4634ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
3267{ 4635{
3268 clear_pending (EV_A_ (W)w); 4636 clear_pending (EV_A_ (W)w);
3269 if (expect_false (!ev_is_active (w))) 4637 if (expect_false (!ev_is_active (w)))
3270 return; 4638 return;
3271 4639
… …
3287} 4655}
3288#endif 4656#endif
3289 4657
3290#if EV_IDLE_ENABLE 4658#if EV_IDLE_ENABLE
3291void 4659void
3292ev_idle_start (EV_P_ ev_idle *w) 4660ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
3293{ 4661{
3294 if (expect_false (ev_is_active (w))) 4662 if (expect_false (ev_is_active (w)))
3295 return; 4663 return;
3296 4664
3297 pri_adjust (EV_A_ (W)w); 4665 pri_adjust (EV_A_ (W)w);
… …
3302 int active = ++idlecnt [ABSPRI (w)]; 4670 int active = ++idlecnt [ABSPRI (w)];
3303 4671
3304 ++idleall; 4672 ++idleall;
3305 ev_start (EV_A_ (W)w, active); 4673 ev_start (EV_A_ (W)w, active);
3306 4674
3307 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 4675 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
3308 idles [ABSPRI (w)][active - 1] = w; 4676 idles [ABSPRI (w)][active - 1] = w;
3309 } 4677 }
3310 4678
3311 EV_FREQUENT_CHECK; 4679 EV_FREQUENT_CHECK;
3312} 4680}
3313 4681
3314void 4682void
3315ev_idle_stop (EV_P_ ev_idle *w) 4683ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
3316{ 4684{
3317 clear_pending (EV_A_ (W)w); 4685 clear_pending (EV_A_ (W)w);
3318 if (expect_false (!ev_is_active (w))) 4686 if (expect_false (!ev_is_active (w)))
3319 return; 4687 return;
3320 4688
… …
3334} 4702}
3335#endif 4703#endif
3336 4704
3337#if EV_PREPARE_ENABLE 4705#if EV_PREPARE_ENABLE
3338void 4706void
3339ev_prepare_start (EV_P_ ev_prepare *w) 4707ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
3340{ 4708{
3341 if (expect_false (ev_is_active (w))) 4709 if (expect_false (ev_is_active (w)))
3342 return; 4710 return;
3343 4711
3344 EV_FREQUENT_CHECK; 4712 EV_FREQUENT_CHECK;
3345 4713
3346 ev_start (EV_A_ (W)w, ++preparecnt); 4714 ev_start (EV_A_ (W)w, ++preparecnt);
3347 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4715 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
3348 prepares [preparecnt - 1] = w; 4716 prepares [preparecnt - 1] = w;
3349 4717
3350 EV_FREQUENT_CHECK; 4718 EV_FREQUENT_CHECK;
3351} 4719}
3352 4720
3353void 4721void
3354ev_prepare_stop (EV_P_ ev_prepare *w) 4722ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
3355{ 4723{
3356 clear_pending (EV_A_ (W)w); 4724 clear_pending (EV_A_ (W)w);
3357 if (expect_false (!ev_is_active (w))) 4725 if (expect_false (!ev_is_active (w)))
3358 return; 4726 return;
3359 4727
… …
3372} 4740}
3373#endif 4741#endif
3374 4742
3375#if EV_CHECK_ENABLE 4743#if EV_CHECK_ENABLE
3376void 4744void
3377ev_check_start (EV_P_ ev_check *w) 4745ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
3378{ 4746{
3379 if (expect_false (ev_is_active (w))) 4747 if (expect_false (ev_is_active (w)))
3380 return; 4748 return;
3381 4749
3382 EV_FREQUENT_CHECK; 4750 EV_FREQUENT_CHECK;
3383 4751
3384 ev_start (EV_A_ (W)w, ++checkcnt); 4752 ev_start (EV_A_ (W)w, ++checkcnt);
3385 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 4753 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
3386 checks [checkcnt - 1] = w; 4754 checks [checkcnt - 1] = w;
3387 4755
3388 EV_FREQUENT_CHECK; 4756 EV_FREQUENT_CHECK;
3389} 4757}
3390 4758
3391void 4759void
3392ev_check_stop (EV_P_ ev_check *w) 4760ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
3393{ 4761{
3394 clear_pending (EV_A_ (W)w); 4762 clear_pending (EV_A_ (W)w);
3395 if (expect_false (!ev_is_active (w))) 4763 if (expect_false (!ev_is_active (w)))
3396 return; 4764 return;
3397 4765
… …
3409 EV_FREQUENT_CHECK; 4777 EV_FREQUENT_CHECK;
3410} 4778}
3411#endif 4779#endif
3412 4780
3413#if EV_EMBED_ENABLE 4781#if EV_EMBED_ENABLE
3414void noinline 4782noinline
4783void
3415ev_embed_sweep (EV_P_ ev_embed *w) 4784ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
3416{ 4785{
3417 ev_loop (w->other, EVLOOP_NONBLOCK); 4786 ev_run (w->other, EVRUN_NOWAIT);
3418} 4787}
3419 4788
3420static void 4789static void
3421embed_io_cb (EV_P_ ev_io *io, int revents) 4790embed_io_cb (EV_P_ ev_io *io, int revents)
3422{ 4791{
3423 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4792 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3424 4793
3425 if (ev_cb (w)) 4794 if (ev_cb (w))
3426 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4795 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3427 else 4796 else
3428 ev_loop (w->other, EVLOOP_NONBLOCK); 4797 ev_run (w->other, EVRUN_NOWAIT);
3429} 4798}
3430 4799
3431static void 4800static void
3432embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4801embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3433{ 4802{
… …
3437 EV_P = w->other; 4806 EV_P = w->other;
3438 4807
3439 while (fdchangecnt) 4808 while (fdchangecnt)
3440 { 4809 {
3441 fd_reify (EV_A); 4810 fd_reify (EV_A);
3442 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4811 ev_run (EV_A_ EVRUN_NOWAIT);
3443 } 4812 }
3444 } 4813 }
3445} 4814}
3446 4815
3447static void 4816static void
… …
3453 4822
3454 { 4823 {
3455 EV_P = w->other; 4824 EV_P = w->other;
3456 4825
3457 ev_loop_fork (EV_A); 4826 ev_loop_fork (EV_A);
3458 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4827 ev_run (EV_A_ EVRUN_NOWAIT);
3459 } 4828 }
3460 4829
3461 ev_embed_start (EV_A_ w); 4830 ev_embed_start (EV_A_ w);
3462} 4831}
3463 4832
… …
3468 ev_idle_stop (EV_A_ idle); 4837 ev_idle_stop (EV_A_ idle);
3469} 4838}
3470#endif 4839#endif
3471 4840
3472void 4841void
3473ev_embed_start (EV_P_ ev_embed *w) 4842ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
3474{ 4843{
3475 if (expect_false (ev_is_active (w))) 4844 if (expect_false (ev_is_active (w)))
3476 return; 4845 return;
3477 4846
3478 { 4847 {
… …
3499 4868
3500 EV_FREQUENT_CHECK; 4869 EV_FREQUENT_CHECK;
3501} 4870}
3502 4871
3503void 4872void
3504ev_embed_stop (EV_P_ ev_embed *w) 4873ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
3505{ 4874{
3506 clear_pending (EV_A_ (W)w); 4875 clear_pending (EV_A_ (W)w);
3507 if (expect_false (!ev_is_active (w))) 4876 if (expect_false (!ev_is_active (w)))
3508 return; 4877 return;
3509 4878
… …
3519} 4888}
3520#endif 4889#endif
3521 4890
3522#if EV_FORK_ENABLE 4891#if EV_FORK_ENABLE
3523void 4892void
3524ev_fork_start (EV_P_ ev_fork *w) 4893ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
3525{ 4894{
3526 if (expect_false (ev_is_active (w))) 4895 if (expect_false (ev_is_active (w)))
3527 return; 4896 return;
3528 4897
3529 EV_FREQUENT_CHECK; 4898 EV_FREQUENT_CHECK;
3530 4899
3531 ev_start (EV_A_ (W)w, ++forkcnt); 4900 ev_start (EV_A_ (W)w, ++forkcnt);
3532 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 4901 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
3533 forks [forkcnt - 1] = w; 4902 forks [forkcnt - 1] = w;
3534 4903
3535 EV_FREQUENT_CHECK; 4904 EV_FREQUENT_CHECK;
3536} 4905}
3537 4906
3538void 4907void
3539ev_fork_stop (EV_P_ ev_fork *w) 4908ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
3540{ 4909{
3541 clear_pending (EV_A_ (W)w); 4910 clear_pending (EV_A_ (W)w);
3542 if (expect_false (!ev_is_active (w))) 4911 if (expect_false (!ev_is_active (w)))
3543 return; 4912 return;
3544 4913
… …
3555 4924
3556 EV_FREQUENT_CHECK; 4925 EV_FREQUENT_CHECK;
3557} 4926}
3558#endif 4927#endif
3559 4928
3560#if EV_ASYNC_ENABLE 4929#if EV_CLEANUP_ENABLE
3561void 4930void
3562ev_async_start (EV_P_ ev_async *w) 4931ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
3563{ 4932{
3564 if (expect_false (ev_is_active (w))) 4933 if (expect_false (ev_is_active (w)))
3565 return; 4934 return;
3566 4935
3567 evpipe_init (EV_A);
3568
3569 EV_FREQUENT_CHECK; 4936 EV_FREQUENT_CHECK;
3570 4937
3571 ev_start (EV_A_ (W)w, ++asynccnt); 4938 ev_start (EV_A_ (W)w, ++cleanupcnt);
3572 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 4939 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
3573 asyncs [asynccnt - 1] = w; 4940 cleanups [cleanupcnt - 1] = w;
3574 4941
4942 /* cleanup watchers should never keep a refcount on the loop */
4943 ev_unref (EV_A);
3575 EV_FREQUENT_CHECK; 4944 EV_FREQUENT_CHECK;
3576} 4945}
3577 4946
3578void 4947void
3579ev_async_stop (EV_P_ ev_async *w) 4948ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
3580{ 4949{
3581 clear_pending (EV_A_ (W)w); 4950 clear_pending (EV_A_ (W)w);
3582 if (expect_false (!ev_is_active (w))) 4951 if (expect_false (!ev_is_active (w)))
3583 return; 4952 return;
3584 4953
3585 EV_FREQUENT_CHECK; 4954 EV_FREQUENT_CHECK;
4955 ev_ref (EV_A);
4956
4957 {
4958 int active = ev_active (w);
4959
4960 cleanups [active - 1] = cleanups [--cleanupcnt];
4961 ev_active (cleanups [active - 1]) = active;
4962 }
4963
4964 ev_stop (EV_A_ (W)w);
4965
4966 EV_FREQUENT_CHECK;
4967}
4968#endif
4969
4970#if EV_ASYNC_ENABLE
4971void
4972ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
4973{
4974 if (expect_false (ev_is_active (w)))
4975 return;
4976
4977 w->sent = 0;
4978
4979 evpipe_init (EV_A);
4980
4981 EV_FREQUENT_CHECK;
4982
4983 ev_start (EV_A_ (W)w, ++asynccnt);
4984 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
4985 asyncs [asynccnt - 1] = w;
4986
4987 EV_FREQUENT_CHECK;
4988}
4989
4990void
4991ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
4992{
4993 clear_pending (EV_A_ (W)w);
4994 if (expect_false (!ev_is_active (w)))
4995 return;
4996
4997 EV_FREQUENT_CHECK;
3586 4998
3587 { 4999 {
3588 int active = ev_active (w); 5000 int active = ev_active (w);
3589 5001
3590 asyncs [active - 1] = asyncs [--asynccnt]; 5002 asyncs [active - 1] = asyncs [--asynccnt];
… …
3595 5007
3596 EV_FREQUENT_CHECK; 5008 EV_FREQUENT_CHECK;
3597} 5009}
3598 5010
3599void 5011void
3600ev_async_send (EV_P_ ev_async *w) 5012ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
3601{ 5013{
3602 w->sent = 1; 5014 w->sent = 1;
3603 evpipe_write (EV_A_ &async_pending); 5015 evpipe_write (EV_A_ &async_pending);
3604} 5016}
3605#endif 5017#endif
… …
3642 5054
3643 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5055 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3644} 5056}
3645 5057
3646void 5058void
3647ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 5059ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
3648{ 5060{
3649 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5061 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3650
3651 if (expect_false (!once))
3652 {
3653 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3654 return;
3655 }
3656 5062
3657 once->cb = cb; 5063 once->cb = cb;
3658 once->arg = arg; 5064 once->arg = arg;
3659 5065
3660 ev_init (&once->io, once_cb_io); 5066 ev_init (&once->io, once_cb_io);
… …
3673} 5079}
3674 5080
3675/*****************************************************************************/ 5081/*****************************************************************************/
3676 5082
3677#if EV_WALK_ENABLE 5083#if EV_WALK_ENABLE
5084ecb_cold
3678void 5085void
3679ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 5086ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
3680{ 5087{
3681 int i, j; 5088 int i, j;
3682 ev_watcher_list *wl, *wn; 5089 ev_watcher_list *wl, *wn;
3683 5090
3684 if (types & (EV_IO | EV_EMBED)) 5091 if (types & (EV_IO | EV_EMBED))
… …
3727 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 5134 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3728#endif 5135#endif
3729 5136
3730#if EV_IDLE_ENABLE 5137#if EV_IDLE_ENABLE
3731 if (types & EV_IDLE) 5138 if (types & EV_IDLE)
3732 for (j = NUMPRI; i--; ) 5139 for (j = NUMPRI; j--; )
3733 for (i = idlecnt [j]; i--; ) 5140 for (i = idlecnt [j]; i--; )
3734 cb (EV_A_ EV_IDLE, idles [j][i]); 5141 cb (EV_A_ EV_IDLE, idles [j][i]);
3735#endif 5142#endif
3736 5143
3737#if EV_FORK_ENABLE 5144#if EV_FORK_ENABLE
… …
3790 5197
3791#if EV_MULTIPLICITY 5198#if EV_MULTIPLICITY
3792 #include "ev_wrap.h" 5199 #include "ev_wrap.h"
3793#endif 5200#endif
3794 5201
3795#ifdef __cplusplus
3796}
3797#endif
3798

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