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Comparing libev/ev.c (file contents):
Revision 1.342 by root, Mon Mar 29 12:40:57 2010 UTC vs.
Revision 1.479 by root, Sun Dec 20 01:31:17 2015 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) 2007,2008,2009,2010,2011,2012,2013 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
… …
77# ifndef EV_USE_REALTIME 79# ifndef EV_USE_REALTIME
78# define EV_USE_REALTIME 0 80# define EV_USE_REALTIME 0
79# endif 81# endif
80# endif 82# endif
81 83
84# if HAVE_NANOSLEEP
82# ifndef EV_USE_NANOSLEEP 85# ifndef EV_USE_NANOSLEEP
83# if HAVE_NANOSLEEP
84# define EV_USE_NANOSLEEP EV_FEATURE_OS 86# define EV_USE_NANOSLEEP EV_FEATURE_OS
87# endif
85# else 88# else
89# undef EV_USE_NANOSLEEP
86# define EV_USE_NANOSLEEP 0 90# define EV_USE_NANOSLEEP 0
91# endif
92
93# if HAVE_SELECT && HAVE_SYS_SELECT_H
94# ifndef EV_USE_SELECT
95# define EV_USE_SELECT EV_FEATURE_BACKENDS
87# endif 96# endif
97# else
98# undef EV_USE_SELECT
99# define EV_USE_SELECT 0
88# endif 100# endif
89 101
102# if HAVE_POLL && HAVE_POLL_H
90# ifndef EV_USE_SELECT 103# ifndef EV_USE_POLL
91# if HAVE_SELECT && HAVE_SYS_SELECT_H
92# define EV_USE_SELECT EV_FEATURE_BACKENDS 104# define EV_USE_POLL EV_FEATURE_BACKENDS
93# else
94# define EV_USE_SELECT 0
95# endif 105# endif
96# endif
97
98# ifndef EV_USE_POLL
99# if HAVE_POLL && HAVE_POLL_H
100# define EV_USE_POLL EV_FEATURE_BACKENDS
101# else 106# else
107# undef EV_USE_POLL
102# define EV_USE_POLL 0 108# define EV_USE_POLL 0
103# endif
104# endif 109# endif
105 110
106# ifndef EV_USE_EPOLL
107# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 111# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
112# ifndef EV_USE_EPOLL
108# define EV_USE_EPOLL EV_FEATURE_BACKENDS 113# define EV_USE_EPOLL EV_FEATURE_BACKENDS
109# else
110# define EV_USE_EPOLL 0
111# endif 114# endif
115# else
116# undef EV_USE_EPOLL
117# define EV_USE_EPOLL 0
112# endif 118# endif
113 119
114# ifndef EV_USE_KQUEUE
115# if HAVE_KQUEUE && HAVE_SYS_EVENT_H 120# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
121# ifndef EV_USE_KQUEUE
116# define EV_USE_KQUEUE EV_FEATURE_BACKENDS 122# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
117# else
118# define EV_USE_KQUEUE 0
119# endif 123# endif
124# else
125# undef EV_USE_KQUEUE
126# define EV_USE_KQUEUE 0
120# endif 127# endif
121 128
122# ifndef EV_USE_PORT
123# if HAVE_PORT_H && HAVE_PORT_CREATE 129# if HAVE_PORT_H && HAVE_PORT_CREATE
130# ifndef EV_USE_PORT
124# define EV_USE_PORT EV_FEATURE_BACKENDS 131# define EV_USE_PORT EV_FEATURE_BACKENDS
125# else
126# define EV_USE_PORT 0
127# endif 132# endif
133# else
134# undef EV_USE_PORT
135# define EV_USE_PORT 0
128# endif 136# endif
129 137
130# ifndef EV_USE_INOTIFY
131# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 138# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
139# ifndef EV_USE_INOTIFY
132# define EV_USE_INOTIFY EV_FEATURE_OS 140# define EV_USE_INOTIFY EV_FEATURE_OS
133# else
134# define EV_USE_INOTIFY 0
135# endif 141# endif
142# else
143# undef EV_USE_INOTIFY
144# define EV_USE_INOTIFY 0
136# endif 145# endif
137 146
138# ifndef EV_USE_SIGNALFD
139# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H 147# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
148# ifndef EV_USE_SIGNALFD
140# define EV_USE_SIGNALFD EV_FEATURE_OS 149# define EV_USE_SIGNALFD EV_FEATURE_OS
141# else
142# define EV_USE_SIGNALFD 0
143# endif 150# endif
151# else
152# undef EV_USE_SIGNALFD
153# define EV_USE_SIGNALFD 0
144# endif 154# endif
145 155
156# if HAVE_EVENTFD
146# ifndef EV_USE_EVENTFD 157# ifndef EV_USE_EVENTFD
147# if HAVE_EVENTFD
148# define EV_USE_EVENTFD EV_FEATURE_OS 158# define EV_USE_EVENTFD EV_FEATURE_OS
149# else
150# define EV_USE_EVENTFD 0
151# endif 159# endif
160# else
161# undef EV_USE_EVENTFD
162# define EV_USE_EVENTFD 0
152# endif 163# endif
153 164
154#endif 165#endif
155 166
156#include <math.h>
157#include <stdlib.h> 167#include <stdlib.h>
158#include <string.h> 168#include <string.h>
159#include <fcntl.h> 169#include <fcntl.h>
160#include <stddef.h> 170#include <stddef.h>
161 171
… …
173# include EV_H 183# include EV_H
174#else 184#else
175# include "ev.h" 185# include "ev.h"
176#endif 186#endif
177 187
188#if EV_NO_THREADS
189# undef EV_NO_SMP
190# define EV_NO_SMP 1
191# undef ECB_NO_THREADS
192# define ECB_NO_THREADS 1
193#endif
194#if EV_NO_SMP
195# undef EV_NO_SMP
196# define ECB_NO_SMP 1
197#endif
198
178#ifndef _WIN32 199#ifndef _WIN32
179# include <sys/time.h> 200# include <sys/time.h>
180# include <sys/wait.h> 201# include <sys/wait.h>
181# include <unistd.h> 202# include <unistd.h>
182#else 203#else
183# include <io.h> 204# include <io.h>
184# define WIN32_LEAN_AND_MEAN 205# define WIN32_LEAN_AND_MEAN
206# include <winsock2.h>
185# include <windows.h> 207# include <windows.h>
186# ifndef EV_SELECT_IS_WINSOCKET 208# ifndef EV_SELECT_IS_WINSOCKET
187# define EV_SELECT_IS_WINSOCKET 1 209# define EV_SELECT_IS_WINSOCKET 1
188# endif 210# endif
189# undef EV_AVOID_STDIO 211# undef EV_AVOID_STDIO
190#endif 212#endif
191 213
214/* OS X, in its infinite idiocy, actually HARDCODES
215 * a limit of 1024 into their select. Where people have brains,
216 * OS X engineers apparently have a vacuum. Or maybe they were
217 * ordered to have a vacuum, or they do anything for money.
218 * This might help. Or not.
219 */
220#define _DARWIN_UNLIMITED_SELECT 1
221
192/* this block tries to deduce configuration from header-defined symbols and defaults */ 222/* this block tries to deduce configuration from header-defined symbols and defaults */
193 223
194/* try to deduce the maximum number of signals on this platform */ 224/* try to deduce the maximum number of signals on this platform */
195#if defined (EV_NSIG) 225#if defined EV_NSIG
196/* use what's provided */ 226/* use what's provided */
197#elif defined (NSIG) 227#elif defined NSIG
198# define EV_NSIG (NSIG) 228# define EV_NSIG (NSIG)
199#elif defined(_NSIG) 229#elif defined _NSIG
200# define EV_NSIG (_NSIG) 230# define EV_NSIG (_NSIG)
201#elif defined (SIGMAX) 231#elif defined SIGMAX
202# define EV_NSIG (SIGMAX+1) 232# define EV_NSIG (SIGMAX+1)
203#elif defined (SIG_MAX) 233#elif defined SIG_MAX
204# define EV_NSIG (SIG_MAX+1) 234# define EV_NSIG (SIG_MAX+1)
205#elif defined (_SIG_MAX) 235#elif defined _SIG_MAX
206# define EV_NSIG (_SIG_MAX+1) 236# define EV_NSIG (_SIG_MAX+1)
207#elif defined (MAXSIG) 237#elif defined MAXSIG
208# define EV_NSIG (MAXSIG+1) 238# define EV_NSIG (MAXSIG+1)
209#elif defined (MAX_SIG) 239#elif defined MAX_SIG
210# define EV_NSIG (MAX_SIG+1) 240# define EV_NSIG (MAX_SIG+1)
211#elif defined (SIGARRAYSIZE) 241#elif defined SIGARRAYSIZE
212# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ 242# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
213#elif defined (_sys_nsig) 243#elif defined _sys_nsig
214# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 244# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
215#else 245#else
216# error "unable to find value for NSIG, please report" 246# define EV_NSIG (8 * sizeof (sigset_t) + 1)
217/* to make it compile regardless, just remove the above line, */ 247#endif
218/* but consider reporting it, too! :) */ 248
219# define EV_NSIG 65 249#ifndef EV_USE_FLOOR
250# define EV_USE_FLOOR 0
220#endif 251#endif
221 252
222#ifndef EV_USE_CLOCK_SYSCALL 253#ifndef EV_USE_CLOCK_SYSCALL
223# if __linux && __GLIBC__ >= 2 254# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
224# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS 255# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
225# else 256# else
226# define EV_USE_CLOCK_SYSCALL 0 257# define EV_USE_CLOCK_SYSCALL 0
227# endif 258# endif
228#endif 259#endif
229 260
261#if !(_POSIX_TIMERS > 0)
262# ifndef EV_USE_MONOTONIC
263# define EV_USE_MONOTONIC 0
264# endif
265# ifndef EV_USE_REALTIME
266# define EV_USE_REALTIME 0
267# endif
268#endif
269
230#ifndef EV_USE_MONOTONIC 270#ifndef EV_USE_MONOTONIC
231# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 271# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
232# define EV_USE_MONOTONIC EV_FEATURE_OS 272# define EV_USE_MONOTONIC EV_FEATURE_OS
233# else 273# else
234# define EV_USE_MONOTONIC 0 274# define EV_USE_MONOTONIC 0
235# endif 275# endif
236#endif 276#endif
… …
323 363
324#ifndef EV_HEAP_CACHE_AT 364#ifndef EV_HEAP_CACHE_AT
325# define EV_HEAP_CACHE_AT EV_FEATURE_DATA 365# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
326#endif 366#endif
327 367
368#ifdef ANDROID
369/* supposedly, android doesn't typedef fd_mask */
370# undef EV_USE_SELECT
371# define EV_USE_SELECT 0
372/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
373# undef EV_USE_CLOCK_SYSCALL
374# define EV_USE_CLOCK_SYSCALL 0
375#endif
376
377/* aix's poll.h seems to cause lots of trouble */
378#ifdef _AIX
379/* AIX has a completely broken poll.h header */
380# undef EV_USE_POLL
381# define EV_USE_POLL 0
382#endif
383
328/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 384/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
329/* which makes programs even slower. might work on other unices, too. */ 385/* which makes programs even slower. might work on other unices, too. */
330#if EV_USE_CLOCK_SYSCALL 386#if EV_USE_CLOCK_SYSCALL
331# include <syscall.h> 387# include <sys/syscall.h>
332# ifdef SYS_clock_gettime 388# ifdef SYS_clock_gettime
333# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 389# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
334# undef EV_USE_MONOTONIC 390# undef EV_USE_MONOTONIC
335# define EV_USE_MONOTONIC 1 391# define EV_USE_MONOTONIC 1
336# else 392# else
… …
339# endif 395# endif
340#endif 396#endif
341 397
342/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 398/* this block fixes any misconfiguration where we know we run into trouble otherwise */
343 399
344#ifdef _AIX
345/* AIX has a completely broken poll.h header */
346# undef EV_USE_POLL
347# define EV_USE_POLL 0
348#endif
349
350#ifndef CLOCK_MONOTONIC 400#ifndef CLOCK_MONOTONIC
351# undef EV_USE_MONOTONIC 401# undef EV_USE_MONOTONIC
352# define EV_USE_MONOTONIC 0 402# define EV_USE_MONOTONIC 0
353#endif 403#endif
354 404
… …
361# undef EV_USE_INOTIFY 411# undef EV_USE_INOTIFY
362# define EV_USE_INOTIFY 0 412# define EV_USE_INOTIFY 0
363#endif 413#endif
364 414
365#if !EV_USE_NANOSLEEP 415#if !EV_USE_NANOSLEEP
366# ifndef _WIN32 416/* hp-ux has it in sys/time.h, which we unconditionally include above */
417# if !defined _WIN32 && !defined __hpux
367# include <sys/select.h> 418# include <sys/select.h>
368# endif 419# endif
369#endif 420#endif
370 421
371#if EV_USE_INOTIFY 422#if EV_USE_INOTIFY
372# include <sys/utsname.h>
373# include <sys/statfs.h> 423# include <sys/statfs.h>
374# include <sys/inotify.h> 424# include <sys/inotify.h>
375/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 425/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
376# ifndef IN_DONT_FOLLOW 426# ifndef IN_DONT_FOLLOW
377# undef EV_USE_INOTIFY 427# undef EV_USE_INOTIFY
378# define EV_USE_INOTIFY 0 428# define EV_USE_INOTIFY 0
379# endif 429# endif
380#endif
381
382#if EV_SELECT_IS_WINSOCKET
383# include <winsock.h>
384#endif 430#endif
385 431
386#if EV_USE_EVENTFD 432#if EV_USE_EVENTFD
387/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 433/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
388# include <stdint.h> 434# include <stdint.h>
… …
394# define EFD_CLOEXEC O_CLOEXEC 440# define EFD_CLOEXEC O_CLOEXEC
395# else 441# else
396# define EFD_CLOEXEC 02000000 442# define EFD_CLOEXEC 02000000
397# endif 443# endif
398# endif 444# endif
399# ifdef __cplusplus
400extern "C" {
401# endif
402int (eventfd) (unsigned int initval, int flags); 445EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
403# ifdef __cplusplus
404}
405# endif
406#endif 446#endif
407 447
408#if EV_USE_SIGNALFD 448#if EV_USE_SIGNALFD
409/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 449/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
410# include <stdint.h> 450# include <stdint.h>
… …
416# define SFD_CLOEXEC O_CLOEXEC 456# define SFD_CLOEXEC O_CLOEXEC
417# else 457# else
418# define SFD_CLOEXEC 02000000 458# define SFD_CLOEXEC 02000000
419# endif 459# endif
420# endif 460# endif
421# ifdef __cplusplus
422extern "C" {
423# endif
424int signalfd (int fd, const sigset_t *mask, int flags); 461EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
425 462
426struct signalfd_siginfo 463struct signalfd_siginfo
427{ 464{
428 uint32_t ssi_signo; 465 uint32_t ssi_signo;
429 char pad[128 - sizeof (uint32_t)]; 466 char pad[128 - sizeof (uint32_t)];
430}; 467};
431# ifdef __cplusplus
432}
433# endif 468#endif
434#endif
435
436 469
437/**/ 470/**/
438 471
439#if EV_VERIFY >= 3 472#if EV_VERIFY >= 3
440# define EV_FREQUENT_CHECK ev_verify (EV_A) 473# define EV_FREQUENT_CHECK ev_verify (EV_A)
441#else 474#else
442# define EV_FREQUENT_CHECK do { } while (0) 475# define EV_FREQUENT_CHECK do { } while (0)
443#endif 476#endif
444 477
445/* 478/*
446 * This is used to avoid floating point rounding problems. 479 * This is used to work around floating point rounding problems.
447 * It is added to ev_rt_now when scheduling periodics
448 * to ensure progress, time-wise, even when rounding
449 * errors are against us.
450 * This value is good at least till the year 4000. 480 * This value is good at least till the year 4000.
451 * Better solutions welcome.
452 */ 481 */
453#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 482#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
483/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
454 484
455#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 485#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
456#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 486#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
457 487
488#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
489#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
490
491/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
492/* ECB.H BEGIN */
493/*
494 * libecb - http://software.schmorp.de/pkg/libecb
495 *
496 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
497 * Copyright (©) 2011 Emanuele Giaquinta
498 * All rights reserved.
499 *
500 * Redistribution and use in source and binary forms, with or without modifica-
501 * tion, are permitted provided that the following conditions are met:
502 *
503 * 1. Redistributions of source code must retain the above copyright notice,
504 * this list of conditions and the following disclaimer.
505 *
506 * 2. Redistributions in binary form must reproduce the above copyright
507 * notice, this list of conditions and the following disclaimer in the
508 * documentation and/or other materials provided with the distribution.
509 *
510 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
511 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
512 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
513 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
514 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
515 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
516 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
517 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
518 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
519 * OF THE POSSIBILITY OF SUCH DAMAGE.
520 *
521 * Alternatively, the contents of this file may be used under the terms of
522 * the GNU General Public License ("GPL") version 2 or any later version,
523 * in which case the provisions of the GPL are applicable instead of
524 * the above. If you wish to allow the use of your version of this file
525 * only under the terms of the GPL and not to allow others to use your
526 * version of this file under the BSD license, indicate your decision
527 * by deleting the provisions above and replace them with the notice
528 * and other provisions required by the GPL. If you do not delete the
529 * provisions above, a recipient may use your version of this file under
530 * either the BSD or the GPL.
531 */
532
533#ifndef ECB_H
534#define ECB_H
535
536/* 16 bits major, 16 bits minor */
537#define ECB_VERSION 0x00010005
538
539#ifdef _WIN32
540 typedef signed char int8_t;
541 typedef unsigned char uint8_t;
542 typedef signed short int16_t;
543 typedef unsigned short uint16_t;
544 typedef signed int int32_t;
545 typedef unsigned int uint32_t;
458#if __GNUC__ >= 4 546 #if __GNUC__
547 typedef signed long long int64_t;
548 typedef unsigned long long uint64_t;
549 #else /* _MSC_VER || __BORLANDC__ */
550 typedef signed __int64 int64_t;
551 typedef unsigned __int64 uint64_t;
552 #endif
553 #ifdef _WIN64
554 #define ECB_PTRSIZE 8
555 typedef uint64_t uintptr_t;
556 typedef int64_t intptr_t;
557 #else
558 #define ECB_PTRSIZE 4
559 typedef uint32_t uintptr_t;
560 typedef int32_t intptr_t;
561 #endif
562#else
563 #include <inttypes.h>
564 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
565 #define ECB_PTRSIZE 8
566 #else
567 #define ECB_PTRSIZE 4
568 #endif
569#endif
570
571#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
572#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
573
574/* work around x32 idiocy by defining proper macros */
575#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
576 #if _ILP32
577 #define ECB_AMD64_X32 1
578 #else
579 #define ECB_AMD64 1
580 #endif
581#endif
582
583/* many compilers define _GNUC_ to some versions but then only implement
584 * what their idiot authors think are the "more important" extensions,
585 * causing enormous grief in return for some better fake benchmark numbers.
586 * or so.
587 * we try to detect these and simply assume they are not gcc - if they have
588 * an issue with that they should have done it right in the first place.
589 */
590#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
591 #define ECB_GCC_VERSION(major,minor) 0
592#else
593 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
594#endif
595
596#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
597
598#if __clang__ && defined __has_builtin
599 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
600#else
601 #define ECB_CLANG_BUILTIN(x) 0
602#endif
603
604#if __clang__ && defined __has_extension
605 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
606#else
607 #define ECB_CLANG_EXTENSION(x) 0
608#endif
609
610#define ECB_CPP (__cplusplus+0)
611#define ECB_CPP11 (__cplusplus >= 201103L)
612
613#if ECB_CPP
614 #define ECB_C 0
615 #define ECB_STDC_VERSION 0
616#else
617 #define ECB_C 1
618 #define ECB_STDC_VERSION __STDC_VERSION__
619#endif
620
621#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
622#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
623
624#if ECB_CPP
625 #define ECB_EXTERN_C extern "C"
626 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
627 #define ECB_EXTERN_C_END }
628#else
629 #define ECB_EXTERN_C extern
630 #define ECB_EXTERN_C_BEG
631 #define ECB_EXTERN_C_END
632#endif
633
634/*****************************************************************************/
635
636/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
637/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
638
639#if ECB_NO_THREADS
640 #define ECB_NO_SMP 1
641#endif
642
643#if ECB_NO_SMP
644 #define ECB_MEMORY_FENCE do { } while (0)
645#endif
646
647/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
648#if __xlC__ && ECB_CPP
649 #include <builtins.h>
650#endif
651
652#if 1400 <= _MSC_VER
653 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
654#endif
655
656#ifndef ECB_MEMORY_FENCE
657 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
658 #if __i386 || __i386__
659 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
660 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
661 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
662 #elif ECB_GCC_AMD64
663 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
664 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
665 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
666 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
667 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
668 #elif defined __ARM_ARCH_2__ \
669 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
670 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
671 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
672 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
673 || defined __ARM_ARCH_5TEJ__
674 /* should not need any, unless running old code on newer cpu - arm doesn't support that */
675 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
676 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
677 || defined __ARM_ARCH_6T2__
678 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
679 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
680 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
681 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
682 #elif __aarch64__
683 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
684 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
685 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
686 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
687 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
688 #elif defined __s390__ || defined __s390x__
689 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
690 #elif defined __mips__
691 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
692 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
693 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
694 #elif defined __alpha__
695 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
696 #elif defined __hppa__
697 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
698 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
699 #elif defined __ia64__
700 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
701 #elif defined __m68k__
702 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
703 #elif defined __m88k__
704 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
705 #elif defined __sh__
706 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
707 #endif
708 #endif
709#endif
710
711#ifndef ECB_MEMORY_FENCE
712 #if ECB_GCC_VERSION(4,7)
713 /* see comment below (stdatomic.h) about the C11 memory model. */
714 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
715 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
716 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
717
718 #elif ECB_CLANG_EXTENSION(c_atomic)
719 /* see comment below (stdatomic.h) about the C11 memory model. */
720 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
721 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
722 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
723
724 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
725 #define ECB_MEMORY_FENCE __sync_synchronize ()
726 #elif _MSC_VER >= 1500 /* VC++ 2008 */
727 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
728 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
729 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
730 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
731 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
732 #elif _MSC_VER >= 1400 /* VC++ 2005 */
733 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
734 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
735 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
736 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
737 #elif defined _WIN32
738 #include <WinNT.h>
739 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
740 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
741 #include <mbarrier.h>
742 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
743 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
744 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
745 #elif __xlC__
746 #define ECB_MEMORY_FENCE __sync ()
747 #endif
748#endif
749
750#ifndef ECB_MEMORY_FENCE
751 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
752 /* we assume that these memory fences work on all variables/all memory accesses, */
753 /* not just C11 atomics and atomic accesses */
754 #include <stdatomic.h>
755 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
756 /* any fence other than seq_cst, which isn't very efficient for us. */
757 /* Why that is, we don't know - either the C11 memory model is quite useless */
758 /* for most usages, or gcc and clang have a bug */
759 /* I *currently* lean towards the latter, and inefficiently implement */
760 /* all three of ecb's fences as a seq_cst fence */
761 /* Update, gcc-4.8 generates mfence for all c++ fences, but nothing */
762 /* for all __atomic_thread_fence's except seq_cst */
763 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
764 #endif
765#endif
766
767#ifndef ECB_MEMORY_FENCE
768 #if !ECB_AVOID_PTHREADS
769 /*
770 * if you get undefined symbol references to pthread_mutex_lock,
771 * or failure to find pthread.h, then you should implement
772 * the ECB_MEMORY_FENCE operations for your cpu/compiler
773 * OR provide pthread.h and link against the posix thread library
774 * of your system.
775 */
776 #include <pthread.h>
777 #define ECB_NEEDS_PTHREADS 1
778 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
779
780 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
781 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
782 #endif
783#endif
784
785#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
786 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
787#endif
788
789#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
790 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
791#endif
792
793/*****************************************************************************/
794
795#if ECB_CPP
796 #define ecb_inline static inline
797#elif ECB_GCC_VERSION(2,5)
798 #define ecb_inline static __inline__
799#elif ECB_C99
800 #define ecb_inline static inline
801#else
802 #define ecb_inline static
803#endif
804
805#if ECB_GCC_VERSION(3,3)
806 #define ecb_restrict __restrict__
807#elif ECB_C99
808 #define ecb_restrict restrict
809#else
810 #define ecb_restrict
811#endif
812
813typedef int ecb_bool;
814
815#define ECB_CONCAT_(a, b) a ## b
816#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
817#define ECB_STRINGIFY_(a) # a
818#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
819#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
820
821#define ecb_function_ ecb_inline
822
823#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
824 #define ecb_attribute(attrlist) __attribute__ (attrlist)
825#else
826 #define ecb_attribute(attrlist)
827#endif
828
829#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
830 #define ecb_is_constant(expr) __builtin_constant_p (expr)
831#else
832 /* possible C11 impl for integral types
833 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
834 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
835
836 #define ecb_is_constant(expr) 0
837#endif
838
839#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
459# define expect(expr,value) __builtin_expect ((expr),(value)) 840 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
460# define noinline __attribute__ ((noinline))
461#else 841#else
462# define expect(expr,value) (expr) 842 #define ecb_expect(expr,value) (expr)
463# define noinline
464# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
465# define inline
466# endif 843#endif
467#endif
468 844
845#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
846 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
847#else
848 #define ecb_prefetch(addr,rw,locality)
849#endif
850
851/* no emulation for ecb_decltype */
852#if ECB_CPP11
853 // older implementations might have problems with decltype(x)::type, work around it
854 template<class T> struct ecb_decltype_t { typedef T type; };
855 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
856#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
857 #define ecb_decltype(x) __typeof__ (x)
858#endif
859
860#if _MSC_VER >= 1300
861 #define ecb_deprecated __declspec (deprecated)
862#else
863 #define ecb_deprecated ecb_attribute ((__deprecated__))
864#endif
865
866#if _MSC_VER >= 1500
867 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
868#elif ECB_GCC_VERSION(4,5)
869 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
870#else
871 #define ecb_deprecated_message(msg) ecb_deprecated
872#endif
873
874#if _MSC_VER >= 1400
875 #define ecb_noinline __declspec (noinline)
876#else
877 #define ecb_noinline ecb_attribute ((__noinline__))
878#endif
879
880#define ecb_unused ecb_attribute ((__unused__))
881#define ecb_const ecb_attribute ((__const__))
882#define ecb_pure ecb_attribute ((__pure__))
883
884#if ECB_C11 || __IBMC_NORETURN
885 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
886 #define ecb_noreturn _Noreturn
887#elif ECB_CPP11
888 #define ecb_noreturn [[noreturn]]
889#elif _MSC_VER >= 1200
890 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
891 #define ecb_noreturn __declspec (noreturn)
892#else
893 #define ecb_noreturn ecb_attribute ((__noreturn__))
894#endif
895
896#if ECB_GCC_VERSION(4,3)
897 #define ecb_artificial ecb_attribute ((__artificial__))
898 #define ecb_hot ecb_attribute ((__hot__))
899 #define ecb_cold ecb_attribute ((__cold__))
900#else
901 #define ecb_artificial
902 #define ecb_hot
903 #define ecb_cold
904#endif
905
906/* put around conditional expressions if you are very sure that the */
907/* expression is mostly true or mostly false. note that these return */
908/* booleans, not the expression. */
469#define expect_false(expr) expect ((expr) != 0, 0) 909#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
470#define expect_true(expr) expect ((expr) != 0, 1) 910#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
911/* for compatibility to the rest of the world */
912#define ecb_likely(expr) ecb_expect_true (expr)
913#define ecb_unlikely(expr) ecb_expect_false (expr)
914
915/* count trailing zero bits and count # of one bits */
916#if ECB_GCC_VERSION(3,4) \
917 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
918 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
919 && ECB_CLANG_BUILTIN(__builtin_popcount))
920 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
921 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
922 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
923 #define ecb_ctz32(x) __builtin_ctz (x)
924 #define ecb_ctz64(x) __builtin_ctzll (x)
925 #define ecb_popcount32(x) __builtin_popcount (x)
926 /* no popcountll */
927#else
928 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
929 ecb_function_ ecb_const int
930 ecb_ctz32 (uint32_t x)
931 {
932#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
933 unsigned long r;
934 _BitScanForward (&r, x);
935 return (int)r;
936#else
937 int r = 0;
938
939 x &= ~x + 1; /* this isolates the lowest bit */
940
941#if ECB_branchless_on_i386
942 r += !!(x & 0xaaaaaaaa) << 0;
943 r += !!(x & 0xcccccccc) << 1;
944 r += !!(x & 0xf0f0f0f0) << 2;
945 r += !!(x & 0xff00ff00) << 3;
946 r += !!(x & 0xffff0000) << 4;
947#else
948 if (x & 0xaaaaaaaa) r += 1;
949 if (x & 0xcccccccc) r += 2;
950 if (x & 0xf0f0f0f0) r += 4;
951 if (x & 0xff00ff00) r += 8;
952 if (x & 0xffff0000) r += 16;
953#endif
954
955 return r;
956#endif
957 }
958
959 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
960 ecb_function_ ecb_const int
961 ecb_ctz64 (uint64_t x)
962 {
963#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
964 unsigned long r;
965 _BitScanForward64 (&r, x);
966 return (int)r;
967#else
968 int shift = x & 0xffffffff ? 0 : 32;
969 return ecb_ctz32 (x >> shift) + shift;
970#endif
971 }
972
973 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
974 ecb_function_ ecb_const int
975 ecb_popcount32 (uint32_t x)
976 {
977 x -= (x >> 1) & 0x55555555;
978 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
979 x = ((x >> 4) + x) & 0x0f0f0f0f;
980 x *= 0x01010101;
981
982 return x >> 24;
983 }
984
985 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
986 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
987 {
988#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
989 unsigned long r;
990 _BitScanReverse (&r, x);
991 return (int)r;
992#else
993 int r = 0;
994
995 if (x >> 16) { x >>= 16; r += 16; }
996 if (x >> 8) { x >>= 8; r += 8; }
997 if (x >> 4) { x >>= 4; r += 4; }
998 if (x >> 2) { x >>= 2; r += 2; }
999 if (x >> 1) { r += 1; }
1000
1001 return r;
1002#endif
1003 }
1004
1005 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
1006 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
1007 {
1008#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1009 unsigned long r;
1010 _BitScanReverse64 (&r, x);
1011 return (int)r;
1012#else
1013 int r = 0;
1014
1015 if (x >> 32) { x >>= 32; r += 32; }
1016
1017 return r + ecb_ld32 (x);
1018#endif
1019 }
1020#endif
1021
1022ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
1023ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
1024ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
1025ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
1026
1027ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
1028ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
1029{
1030 return ( (x * 0x0802U & 0x22110U)
1031 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
1032}
1033
1034ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
1035ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
1036{
1037 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
1038 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
1039 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
1040 x = ( x >> 8 ) | ( x << 8);
1041
1042 return x;
1043}
1044
1045ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
1046ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
1047{
1048 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
1049 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
1050 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
1051 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
1052 x = ( x >> 16 ) | ( x << 16);
1053
1054 return x;
1055}
1056
1057/* popcount64 is only available on 64 bit cpus as gcc builtin */
1058/* so for this version we are lazy */
1059ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
1060ecb_function_ ecb_const int
1061ecb_popcount64 (uint64_t x)
1062{
1063 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
1064}
1065
1066ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
1067ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
1068ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
1069ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
1070ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
1071ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
1072ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
1073ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
1074
1075ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
1076ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
1077ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
1078ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
1079ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
1080ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
1081ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
1082ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
1083
1084#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1085 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1086 #define ecb_bswap16(x) __builtin_bswap16 (x)
1087 #else
1088 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1089 #endif
1090 #define ecb_bswap32(x) __builtin_bswap32 (x)
1091 #define ecb_bswap64(x) __builtin_bswap64 (x)
1092#elif _MSC_VER
1093 #include <stdlib.h>
1094 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1095 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1096 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
1097#else
1098 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
1099 ecb_function_ ecb_const uint16_t
1100 ecb_bswap16 (uint16_t x)
1101 {
1102 return ecb_rotl16 (x, 8);
1103 }
1104
1105 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
1106 ecb_function_ ecb_const uint32_t
1107 ecb_bswap32 (uint32_t x)
1108 {
1109 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
1110 }
1111
1112 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
1113 ecb_function_ ecb_const uint64_t
1114 ecb_bswap64 (uint64_t x)
1115 {
1116 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
1117 }
1118#endif
1119
1120#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
1121 #define ecb_unreachable() __builtin_unreachable ()
1122#else
1123 /* this seems to work fine, but gcc always emits a warning for it :/ */
1124 ecb_inline ecb_noreturn void ecb_unreachable (void);
1125 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
1126#endif
1127
1128/* try to tell the compiler that some condition is definitely true */
1129#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
1130
1131ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
1132ecb_inline ecb_const uint32_t
1133ecb_byteorder_helper (void)
1134{
1135 /* the union code still generates code under pressure in gcc, */
1136 /* but less than using pointers, and always seems to */
1137 /* successfully return a constant. */
1138 /* the reason why we have this horrible preprocessor mess */
1139 /* is to avoid it in all cases, at least on common architectures */
1140 /* or when using a recent enough gcc version (>= 4.6) */
1141#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1142 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1143 #define ECB_LITTLE_ENDIAN 1
1144 return 0x44332211;
1145#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1146 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1147 #define ECB_BIG_ENDIAN 1
1148 return 0x11223344;
1149#else
1150 union
1151 {
1152 uint8_t c[4];
1153 uint32_t u;
1154 } u = { 0x11, 0x22, 0x33, 0x44 };
1155 return u.u;
1156#endif
1157}
1158
1159ecb_inline ecb_const ecb_bool ecb_big_endian (void);
1160ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
1161ecb_inline ecb_const ecb_bool ecb_little_endian (void);
1162ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
1163
1164#if ECB_GCC_VERSION(3,0) || ECB_C99
1165 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1166#else
1167 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1168#endif
1169
1170#if ECB_CPP
1171 template<typename T>
1172 static inline T ecb_div_rd (T val, T div)
1173 {
1174 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1175 }
1176 template<typename T>
1177 static inline T ecb_div_ru (T val, T div)
1178 {
1179 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1180 }
1181#else
1182 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1183 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1184#endif
1185
1186#if ecb_cplusplus_does_not_suck
1187 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1188 template<typename T, int N>
1189 static inline int ecb_array_length (const T (&arr)[N])
1190 {
1191 return N;
1192 }
1193#else
1194 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1195#endif
1196
1197ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1198ecb_function_ ecb_const uint32_t
1199ecb_binary16_to_binary32 (uint32_t x)
1200{
1201 unsigned int s = (x & 0x8000) << (31 - 15);
1202 int e = (x >> 10) & 0x001f;
1203 unsigned int m = x & 0x03ff;
1204
1205 if (ecb_expect_false (e == 31))
1206 /* infinity or NaN */
1207 e = 255 - (127 - 15);
1208 else if (ecb_expect_false (!e))
1209 {
1210 if (ecb_expect_true (!m))
1211 /* zero, handled by code below by forcing e to 0 */
1212 e = 0 - (127 - 15);
1213 else
1214 {
1215 /* subnormal, renormalise */
1216 unsigned int s = 10 - ecb_ld32 (m);
1217
1218 m = (m << s) & 0x3ff; /* mask implicit bit */
1219 e -= s - 1;
1220 }
1221 }
1222
1223 /* e and m now are normalised, or zero, (or inf or nan) */
1224 e += 127 - 15;
1225
1226 return s | (e << 23) | (m << (23 - 10));
1227}
1228
1229ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1230ecb_function_ ecb_const uint16_t
1231ecb_binary32_to_binary16 (uint32_t x)
1232{
1233 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1234 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1235 unsigned int m = x & 0x007fffff;
1236
1237 x &= 0x7fffffff;
1238
1239 /* if it's within range of binary16 normals, use fast path */
1240 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1241 {
1242 /* mantissa round-to-even */
1243 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1244
1245 /* handle overflow */
1246 if (ecb_expect_false (m >= 0x00800000))
1247 {
1248 m >>= 1;
1249 e += 1;
1250 }
1251
1252 return s | (e << 10) | (m >> (23 - 10));
1253 }
1254
1255 /* handle large numbers and infinity */
1256 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1257 return s | 0x7c00;
1258
1259 /* handle zero, subnormals and small numbers */
1260 if (ecb_expect_true (x < 0x38800000))
1261 {
1262 /* zero */
1263 if (ecb_expect_true (!x))
1264 return s;
1265
1266 /* handle subnormals */
1267
1268 /* too small, will be zero */
1269 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1270 return s;
1271
1272 m |= 0x00800000; /* make implicit bit explicit */
1273
1274 /* very tricky - we need to round to the nearest e (+10) bit value */
1275 {
1276 unsigned int bits = 14 - e;
1277 unsigned int half = (1 << (bits - 1)) - 1;
1278 unsigned int even = (m >> bits) & 1;
1279
1280 /* if this overflows, we will end up with a normalised number */
1281 m = (m + half + even) >> bits;
1282 }
1283
1284 return s | m;
1285 }
1286
1287 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1288 m >>= 13;
1289
1290 return s | 0x7c00 | m | !m;
1291}
1292
1293/*******************************************************************************/
1294/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1295
1296/* basically, everything uses "ieee pure-endian" floating point numbers */
1297/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1298#if 0 \
1299 || __i386 || __i386__ \
1300 || ECB_GCC_AMD64 \
1301 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1302 || defined __s390__ || defined __s390x__ \
1303 || defined __mips__ \
1304 || defined __alpha__ \
1305 || defined __hppa__ \
1306 || defined __ia64__ \
1307 || defined __m68k__ \
1308 || defined __m88k__ \
1309 || defined __sh__ \
1310 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1311 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1312 || defined __aarch64__
1313 #define ECB_STDFP 1
1314 #include <string.h> /* for memcpy */
1315#else
1316 #define ECB_STDFP 0
1317#endif
1318
1319#ifndef ECB_NO_LIBM
1320
1321 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1322
1323 /* only the oldest of old doesn't have this one. solaris. */
1324 #ifdef INFINITY
1325 #define ECB_INFINITY INFINITY
1326 #else
1327 #define ECB_INFINITY HUGE_VAL
1328 #endif
1329
1330 #ifdef NAN
1331 #define ECB_NAN NAN
1332 #else
1333 #define ECB_NAN ECB_INFINITY
1334 #endif
1335
1336 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1337 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1338 #define ecb_frexpf(x,e) frexpf ((x), (e))
1339 #else
1340 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1341 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1342 #endif
1343
1344 /* convert a float to ieee single/binary32 */
1345 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1346 ecb_function_ ecb_const uint32_t
1347 ecb_float_to_binary32 (float x)
1348 {
1349 uint32_t r;
1350
1351 #if ECB_STDFP
1352 memcpy (&r, &x, 4);
1353 #else
1354 /* slow emulation, works for anything but -0 */
1355 uint32_t m;
1356 int e;
1357
1358 if (x == 0e0f ) return 0x00000000U;
1359 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1360 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1361 if (x != x ) return 0x7fbfffffU;
1362
1363 m = ecb_frexpf (x, &e) * 0x1000000U;
1364
1365 r = m & 0x80000000U;
1366
1367 if (r)
1368 m = -m;
1369
1370 if (e <= -126)
1371 {
1372 m &= 0xffffffU;
1373 m >>= (-125 - e);
1374 e = -126;
1375 }
1376
1377 r |= (e + 126) << 23;
1378 r |= m & 0x7fffffU;
1379 #endif
1380
1381 return r;
1382 }
1383
1384 /* converts an ieee single/binary32 to a float */
1385 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1386 ecb_function_ ecb_const float
1387 ecb_binary32_to_float (uint32_t x)
1388 {
1389 float r;
1390
1391 #if ECB_STDFP
1392 memcpy (&r, &x, 4);
1393 #else
1394 /* emulation, only works for normals and subnormals and +0 */
1395 int neg = x >> 31;
1396 int e = (x >> 23) & 0xffU;
1397
1398 x &= 0x7fffffU;
1399
1400 if (e)
1401 x |= 0x800000U;
1402 else
1403 e = 1;
1404
1405 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1406 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1407
1408 r = neg ? -r : r;
1409 #endif
1410
1411 return r;
1412 }
1413
1414 /* convert a double to ieee double/binary64 */
1415 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1416 ecb_function_ ecb_const uint64_t
1417 ecb_double_to_binary64 (double x)
1418 {
1419 uint64_t r;
1420
1421 #if ECB_STDFP
1422 memcpy (&r, &x, 8);
1423 #else
1424 /* slow emulation, works for anything but -0 */
1425 uint64_t m;
1426 int e;
1427
1428 if (x == 0e0 ) return 0x0000000000000000U;
1429 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1430 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1431 if (x != x ) return 0X7ff7ffffffffffffU;
1432
1433 m = frexp (x, &e) * 0x20000000000000U;
1434
1435 r = m & 0x8000000000000000;;
1436
1437 if (r)
1438 m = -m;
1439
1440 if (e <= -1022)
1441 {
1442 m &= 0x1fffffffffffffU;
1443 m >>= (-1021 - e);
1444 e = -1022;
1445 }
1446
1447 r |= ((uint64_t)(e + 1022)) << 52;
1448 r |= m & 0xfffffffffffffU;
1449 #endif
1450
1451 return r;
1452 }
1453
1454 /* converts an ieee double/binary64 to a double */
1455 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1456 ecb_function_ ecb_const double
1457 ecb_binary64_to_double (uint64_t x)
1458 {
1459 double r;
1460
1461 #if ECB_STDFP
1462 memcpy (&r, &x, 8);
1463 #else
1464 /* emulation, only works for normals and subnormals and +0 */
1465 int neg = x >> 63;
1466 int e = (x >> 52) & 0x7ffU;
1467
1468 x &= 0xfffffffffffffU;
1469
1470 if (e)
1471 x |= 0x10000000000000U;
1472 else
1473 e = 1;
1474
1475 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1476 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1477
1478 r = neg ? -r : r;
1479 #endif
1480
1481 return r;
1482 }
1483
1484 /* convert a float to ieee half/binary16 */
1485 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1486 ecb_function_ ecb_const uint16_t
1487 ecb_float_to_binary16 (float x)
1488 {
1489 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1490 }
1491
1492 /* convert an ieee half/binary16 to float */
1493 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1494 ecb_function_ ecb_const float
1495 ecb_binary16_to_float (uint16_t x)
1496 {
1497 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1498 }
1499
1500#endif
1501
1502#endif
1503
1504/* ECB.H END */
1505
1506#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1507/* if your architecture doesn't need memory fences, e.g. because it is
1508 * single-cpu/core, or if you use libev in a project that doesn't use libev
1509 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
1510 * libev, in which cases the memory fences become nops.
1511 * alternatively, you can remove this #error and link against libpthread,
1512 * which will then provide the memory fences.
1513 */
1514# error "memory fences not defined for your architecture, please report"
1515#endif
1516
1517#ifndef ECB_MEMORY_FENCE
1518# define ECB_MEMORY_FENCE do { } while (0)
1519# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1520# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1521#endif
1522
1523#define expect_false(cond) ecb_expect_false (cond)
1524#define expect_true(cond) ecb_expect_true (cond)
1525#define noinline ecb_noinline
1526
471#define inline_size static inline 1527#define inline_size ecb_inline
472 1528
473#if EV_FEATURE_CODE 1529#if EV_FEATURE_CODE
474# define inline_speed static inline 1530# define inline_speed ecb_inline
475#else 1531#else
476# define inline_speed static noinline 1532# define inline_speed static noinline
477#endif 1533#endif
478 1534
479#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1535#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
… …
494#define ev_active(w) ((W)(w))->active 1550#define ev_active(w) ((W)(w))->active
495#define ev_at(w) ((WT)(w))->at 1551#define ev_at(w) ((WT)(w))->at
496 1552
497#if EV_USE_REALTIME 1553#if EV_USE_REALTIME
498/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 1554/* sig_atomic_t is used to avoid per-thread variables or locking but still */
499/* giving it a reasonably high chance of working on typical architetcures */ 1555/* giving it a reasonably high chance of working on typical architectures */
500static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 1556static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
501#endif 1557#endif
502 1558
503#if EV_USE_MONOTONIC 1559#if EV_USE_MONOTONIC
504static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 1560static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
… …
518# include "ev_win32.c" 1574# include "ev_win32.c"
519#endif 1575#endif
520 1576
521/*****************************************************************************/ 1577/*****************************************************************************/
522 1578
1579/* define a suitable floor function (only used by periodics atm) */
1580
1581#if EV_USE_FLOOR
1582# include <math.h>
1583# define ev_floor(v) floor (v)
1584#else
1585
1586#include <float.h>
1587
1588/* a floor() replacement function, should be independent of ev_tstamp type */
1589static ev_tstamp noinline
1590ev_floor (ev_tstamp v)
1591{
1592 /* the choice of shift factor is not terribly important */
1593#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1594 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1595#else
1596 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1597#endif
1598
1599 /* argument too large for an unsigned long? */
1600 if (expect_false (v >= shift))
1601 {
1602 ev_tstamp f;
1603
1604 if (v == v - 1.)
1605 return v; /* very large number */
1606
1607 f = shift * ev_floor (v * (1. / shift));
1608 return f + ev_floor (v - f);
1609 }
1610
1611 /* special treatment for negative args? */
1612 if (expect_false (v < 0.))
1613 {
1614 ev_tstamp f = -ev_floor (-v);
1615
1616 return f - (f == v ? 0 : 1);
1617 }
1618
1619 /* fits into an unsigned long */
1620 return (unsigned long)v;
1621}
1622
1623#endif
1624
1625/*****************************************************************************/
1626
1627#ifdef __linux
1628# include <sys/utsname.h>
1629#endif
1630
1631static unsigned int noinline ecb_cold
1632ev_linux_version (void)
1633{
1634#ifdef __linux
1635 unsigned int v = 0;
1636 struct utsname buf;
1637 int i;
1638 char *p = buf.release;
1639
1640 if (uname (&buf))
1641 return 0;
1642
1643 for (i = 3+1; --i; )
1644 {
1645 unsigned int c = 0;
1646
1647 for (;;)
1648 {
1649 if (*p >= '0' && *p <= '9')
1650 c = c * 10 + *p++ - '0';
1651 else
1652 {
1653 p += *p == '.';
1654 break;
1655 }
1656 }
1657
1658 v = (v << 8) | c;
1659 }
1660
1661 return v;
1662#else
1663 return 0;
1664#endif
1665}
1666
1667/*****************************************************************************/
1668
523#if EV_AVOID_STDIO 1669#if EV_AVOID_STDIO
524static void noinline 1670static void noinline ecb_cold
525ev_printerr (const char *msg) 1671ev_printerr (const char *msg)
526{ 1672{
527 write (STDERR_FILENO, msg, strlen (msg)); 1673 write (STDERR_FILENO, msg, strlen (msg));
528} 1674}
529#endif 1675#endif
530 1676
531static void (*syserr_cb)(const char *msg); 1677static void (*syserr_cb)(const char *msg) EV_THROW;
532 1678
533void 1679void ecb_cold
534ev_set_syserr_cb (void (*cb)(const char *msg)) 1680ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
535{ 1681{
536 syserr_cb = cb; 1682 syserr_cb = cb;
537} 1683}
538 1684
539static void noinline 1685static void noinline ecb_cold
540ev_syserr (const char *msg) 1686ev_syserr (const char *msg)
541{ 1687{
542 if (!msg) 1688 if (!msg)
543 msg = "(libev) system error"; 1689 msg = "(libev) system error";
544 1690
545 if (syserr_cb) 1691 if (syserr_cb)
546 syserr_cb (msg); 1692 syserr_cb (msg);
547 else 1693 else
548 { 1694 {
549#if EV_AVOID_STDIO 1695#if EV_AVOID_STDIO
550 const char *err = strerror (errno);
551
552 ev_printerr (msg); 1696 ev_printerr (msg);
553 ev_printerr (": "); 1697 ev_printerr (": ");
554 ev_printerr (err); 1698 ev_printerr (strerror (errno));
555 ev_printerr ("\n"); 1699 ev_printerr ("\n");
556#else 1700#else
557 perror (msg); 1701 perror (msg);
558#endif 1702#endif
559 abort (); 1703 abort ();
560 } 1704 }
561} 1705}
562 1706
563static void * 1707static void *
564ev_realloc_emul (void *ptr, long size) 1708ev_realloc_emul (void *ptr, long size) EV_THROW
565{ 1709{
566#if __GLIBC__
567 return realloc (ptr, size);
568#else
569 /* some systems, notably openbsd and darwin, fail to properly 1710 /* some systems, notably openbsd and darwin, fail to properly
570 * implement realloc (x, 0) (as required by both ansi c-89 and 1711 * implement realloc (x, 0) (as required by both ansi c-89 and
571 * the single unix specification, so work around them here. 1712 * the single unix specification, so work around them here.
1713 * recently, also (at least) fedora and debian started breaking it,
1714 * despite documenting it otherwise.
572 */ 1715 */
573 1716
574 if (size) 1717 if (size)
575 return realloc (ptr, size); 1718 return realloc (ptr, size);
576 1719
577 free (ptr); 1720 free (ptr);
578 return 0; 1721 return 0;
579#endif
580} 1722}
581 1723
582static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1724static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
583 1725
584void 1726void ecb_cold
585ev_set_allocator (void *(*cb)(void *ptr, long size)) 1727ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
586{ 1728{
587 alloc = cb; 1729 alloc = cb;
588} 1730}
589 1731
590inline_speed void * 1732inline_speed void *
… …
593 ptr = alloc (ptr, size); 1735 ptr = alloc (ptr, size);
594 1736
595 if (!ptr && size) 1737 if (!ptr && size)
596 { 1738 {
597#if EV_AVOID_STDIO 1739#if EV_AVOID_STDIO
598 ev_printerr ("libev: memory allocation failed, aborting.\n"); 1740 ev_printerr ("(libev) memory allocation failed, aborting.\n");
599#else 1741#else
600 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1742 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
601#endif 1743#endif
602 abort (); 1744 abort ();
603 } 1745 }
604 1746
605 return ptr; 1747 return ptr;
… …
622 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1764 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
623 unsigned char unused; 1765 unsigned char unused;
624#if EV_USE_EPOLL 1766#if EV_USE_EPOLL
625 unsigned int egen; /* generation counter to counter epoll bugs */ 1767 unsigned int egen; /* generation counter to counter epoll bugs */
626#endif 1768#endif
627#if EV_SELECT_IS_WINSOCKET 1769#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
628 SOCKET handle; 1770 SOCKET handle;
1771#endif
1772#if EV_USE_IOCP
1773 OVERLAPPED or, ow;
629#endif 1774#endif
630} ANFD; 1775} ANFD;
631 1776
632/* stores the pending event set for a given watcher */ 1777/* stores the pending event set for a given watcher */
633typedef struct 1778typedef struct
… …
675 #undef VAR 1820 #undef VAR
676 }; 1821 };
677 #include "ev_wrap.h" 1822 #include "ev_wrap.h"
678 1823
679 static struct ev_loop default_loop_struct; 1824 static struct ev_loop default_loop_struct;
680 struct ev_loop *ev_default_loop_ptr; 1825 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
681 1826
682#else 1827#else
683 1828
684 ev_tstamp ev_rt_now; 1829 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
685 #define VAR(name,decl) static decl; 1830 #define VAR(name,decl) static decl;
686 #include "ev_vars.h" 1831 #include "ev_vars.h"
687 #undef VAR 1832 #undef VAR
688 1833
689 static int ev_default_loop_ptr; 1834 static int ev_default_loop_ptr;
… …
698# define EV_RELEASE_CB (void)0 1843# define EV_RELEASE_CB (void)0
699# define EV_ACQUIRE_CB (void)0 1844# define EV_ACQUIRE_CB (void)0
700# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1845# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
701#endif 1846#endif
702 1847
703#define EVUNLOOP_RECURSE 0x80 1848#define EVBREAK_RECURSE 0x80
704 1849
705/*****************************************************************************/ 1850/*****************************************************************************/
706 1851
707#ifndef EV_HAVE_EV_TIME 1852#ifndef EV_HAVE_EV_TIME
708ev_tstamp 1853ev_tstamp
709ev_time (void) 1854ev_time (void) EV_THROW
710{ 1855{
711#if EV_USE_REALTIME 1856#if EV_USE_REALTIME
712 if (expect_true (have_realtime)) 1857 if (expect_true (have_realtime))
713 { 1858 {
714 struct timespec ts; 1859 struct timespec ts;
… …
738 return ev_time (); 1883 return ev_time ();
739} 1884}
740 1885
741#if EV_MULTIPLICITY 1886#if EV_MULTIPLICITY
742ev_tstamp 1887ev_tstamp
743ev_now (EV_P) 1888ev_now (EV_P) EV_THROW
744{ 1889{
745 return ev_rt_now; 1890 return ev_rt_now;
746} 1891}
747#endif 1892#endif
748 1893
749void 1894void
750ev_sleep (ev_tstamp delay) 1895ev_sleep (ev_tstamp delay) EV_THROW
751{ 1896{
752 if (delay > 0.) 1897 if (delay > 0.)
753 { 1898 {
754#if EV_USE_NANOSLEEP 1899#if EV_USE_NANOSLEEP
755 struct timespec ts; 1900 struct timespec ts;
756 1901
757 ts.tv_sec = (time_t)delay; 1902 EV_TS_SET (ts, delay);
758 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
759
760 nanosleep (&ts, 0); 1903 nanosleep (&ts, 0);
761#elif defined(_WIN32) 1904#elif defined _WIN32
762 Sleep ((unsigned long)(delay * 1e3)); 1905 Sleep ((unsigned long)(delay * 1e3));
763#else 1906#else
764 struct timeval tv; 1907 struct timeval tv;
765
766 tv.tv_sec = (time_t)delay;
767 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
768 1908
769 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1909 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
770 /* something not guaranteed by newer posix versions, but guaranteed */ 1910 /* something not guaranteed by newer posix versions, but guaranteed */
771 /* by older ones */ 1911 /* by older ones */
1912 EV_TV_SET (tv, delay);
772 select (0, 0, 0, 0, &tv); 1913 select (0, 0, 0, 0, &tv);
773#endif 1914#endif
774 } 1915 }
775} 1916}
776 1917
777/*****************************************************************************/ 1918/*****************************************************************************/
778 1919
779#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1920#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
780 1921
781/* find a suitable new size for the given array, */ 1922/* find a suitable new size for the given array, */
782/* hopefully by rounding to a ncie-to-malloc size */ 1923/* hopefully by rounding to a nice-to-malloc size */
783inline_size int 1924inline_size int
784array_nextsize (int elem, int cur, int cnt) 1925array_nextsize (int elem, int cur, int cnt)
785{ 1926{
786 int ncur = cur + 1; 1927 int ncur = cur + 1;
787 1928
788 do 1929 do
789 ncur <<= 1; 1930 ncur <<= 1;
790 while (cnt > ncur); 1931 while (cnt > ncur);
791 1932
792 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1933 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
793 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1934 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
794 { 1935 {
795 ncur *= elem; 1936 ncur *= elem;
796 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1937 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
797 ncur = ncur - sizeof (void *) * 4; 1938 ncur = ncur - sizeof (void *) * 4;
… …
799 } 1940 }
800 1941
801 return ncur; 1942 return ncur;
802} 1943}
803 1944
804static noinline void * 1945static void * noinline ecb_cold
805array_realloc (int elem, void *base, int *cur, int cnt) 1946array_realloc (int elem, void *base, int *cur, int cnt)
806{ 1947{
807 *cur = array_nextsize (elem, *cur, cnt); 1948 *cur = array_nextsize (elem, *cur, cnt);
808 return ev_realloc (base, elem * *cur); 1949 return ev_realloc (base, elem * *cur);
809} 1950}
… …
812 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1953 memset ((void *)(base), 0, sizeof (*(base)) * (count))
813 1954
814#define array_needsize(type,base,cur,cnt,init) \ 1955#define array_needsize(type,base,cur,cnt,init) \
815 if (expect_false ((cnt) > (cur))) \ 1956 if (expect_false ((cnt) > (cur))) \
816 { \ 1957 { \
817 int ocur_ = (cur); \ 1958 int ecb_unused ocur_ = (cur); \
818 (base) = (type *)array_realloc \ 1959 (base) = (type *)array_realloc \
819 (sizeof (type), (base), &(cur), (cnt)); \ 1960 (sizeof (type), (base), &(cur), (cnt)); \
820 init ((base) + (ocur_), (cur) - ocur_); \ 1961 init ((base) + (ocur_), (cur) - ocur_); \
821 } 1962 }
822 1963
… …
840pendingcb (EV_P_ ev_prepare *w, int revents) 1981pendingcb (EV_P_ ev_prepare *w, int revents)
841{ 1982{
842} 1983}
843 1984
844void noinline 1985void noinline
845ev_feed_event (EV_P_ void *w, int revents) 1986ev_feed_event (EV_P_ void *w, int revents) EV_THROW
846{ 1987{
847 W w_ = (W)w; 1988 W w_ = (W)w;
848 int pri = ABSPRI (w_); 1989 int pri = ABSPRI (w_);
849 1990
850 if (expect_false (w_->pending)) 1991 if (expect_false (w_->pending))
… …
854 w_->pending = ++pendingcnt [pri]; 1995 w_->pending = ++pendingcnt [pri];
855 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1996 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
856 pendings [pri][w_->pending - 1].w = w_; 1997 pendings [pri][w_->pending - 1].w = w_;
857 pendings [pri][w_->pending - 1].events = revents; 1998 pendings [pri][w_->pending - 1].events = revents;
858 } 1999 }
2000
2001 pendingpri = NUMPRI - 1;
859} 2002}
860 2003
861inline_speed void 2004inline_speed void
862feed_reverse (EV_P_ W w) 2005feed_reverse (EV_P_ W w)
863{ 2006{
… …
909 if (expect_true (!anfd->reify)) 2052 if (expect_true (!anfd->reify))
910 fd_event_nocheck (EV_A_ fd, revents); 2053 fd_event_nocheck (EV_A_ fd, revents);
911} 2054}
912 2055
913void 2056void
914ev_feed_fd_event (EV_P_ int fd, int revents) 2057ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
915{ 2058{
916 if (fd >= 0 && fd < anfdmax) 2059 if (fd >= 0 && fd < anfdmax)
917 fd_event_nocheck (EV_A_ fd, revents); 2060 fd_event_nocheck (EV_A_ fd, revents);
918} 2061}
919 2062
… …
922inline_size void 2065inline_size void
923fd_reify (EV_P) 2066fd_reify (EV_P)
924{ 2067{
925 int i; 2068 int i;
926 2069
2070#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
2071 for (i = 0; i < fdchangecnt; ++i)
2072 {
2073 int fd = fdchanges [i];
2074 ANFD *anfd = anfds + fd;
2075
2076 if (anfd->reify & EV__IOFDSET && anfd->head)
2077 {
2078 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
2079
2080 if (handle != anfd->handle)
2081 {
2082 unsigned long arg;
2083
2084 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
2085
2086 /* handle changed, but fd didn't - we need to do it in two steps */
2087 backend_modify (EV_A_ fd, anfd->events, 0);
2088 anfd->events = 0;
2089 anfd->handle = handle;
2090 }
2091 }
2092 }
2093#endif
2094
927 for (i = 0; i < fdchangecnt; ++i) 2095 for (i = 0; i < fdchangecnt; ++i)
928 { 2096 {
929 int fd = fdchanges [i]; 2097 int fd = fdchanges [i];
930 ANFD *anfd = anfds + fd; 2098 ANFD *anfd = anfds + fd;
931 ev_io *w; 2099 ev_io *w;
932 2100
933 unsigned char events = 0; 2101 unsigned char o_events = anfd->events;
2102 unsigned char o_reify = anfd->reify;
934 2103
935 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2104 anfd->reify = 0;
936 events |= (unsigned char)w->events;
937 2105
938#if EV_SELECT_IS_WINSOCKET 2106 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
939 if (events)
940 { 2107 {
941 unsigned long arg; 2108 anfd->events = 0;
942 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 2109
943 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 2110 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
2111 anfd->events |= (unsigned char)w->events;
2112
2113 if (o_events != anfd->events)
2114 o_reify = EV__IOFDSET; /* actually |= */
944 } 2115 }
945#endif
946 2116
947 { 2117 if (o_reify & EV__IOFDSET)
948 unsigned char o_events = anfd->events;
949 unsigned char o_reify = anfd->reify;
950
951 anfd->reify = 0;
952 anfd->events = events;
953
954 if (o_events != events || o_reify & EV__IOFDSET)
955 backend_modify (EV_A_ fd, o_events, events); 2118 backend_modify (EV_A_ fd, o_events, anfd->events);
956 }
957 } 2119 }
958 2120
959 fdchangecnt = 0; 2121 fdchangecnt = 0;
960} 2122}
961 2123
… …
973 fdchanges [fdchangecnt - 1] = fd; 2135 fdchanges [fdchangecnt - 1] = fd;
974 } 2136 }
975} 2137}
976 2138
977/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2139/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
978inline_speed void 2140inline_speed void ecb_cold
979fd_kill (EV_P_ int fd) 2141fd_kill (EV_P_ int fd)
980{ 2142{
981 ev_io *w; 2143 ev_io *w;
982 2144
983 while ((w = (ev_io *)anfds [fd].head)) 2145 while ((w = (ev_io *)anfds [fd].head))
… …
986 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2148 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
987 } 2149 }
988} 2150}
989 2151
990/* check whether the given fd is actually valid, for error recovery */ 2152/* check whether the given fd is actually valid, for error recovery */
991inline_size int 2153inline_size int ecb_cold
992fd_valid (int fd) 2154fd_valid (int fd)
993{ 2155{
994#ifdef _WIN32 2156#ifdef _WIN32
995 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2157 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
996#else 2158#else
997 return fcntl (fd, F_GETFD) != -1; 2159 return fcntl (fd, F_GETFD) != -1;
998#endif 2160#endif
999} 2161}
1000 2162
1001/* called on EBADF to verify fds */ 2163/* called on EBADF to verify fds */
1002static void noinline 2164static void noinline ecb_cold
1003fd_ebadf (EV_P) 2165fd_ebadf (EV_P)
1004{ 2166{
1005 int fd; 2167 int fd;
1006 2168
1007 for (fd = 0; fd < anfdmax; ++fd) 2169 for (fd = 0; fd < anfdmax; ++fd)
… …
1009 if (!fd_valid (fd) && errno == EBADF) 2171 if (!fd_valid (fd) && errno == EBADF)
1010 fd_kill (EV_A_ fd); 2172 fd_kill (EV_A_ fd);
1011} 2173}
1012 2174
1013/* called on ENOMEM in select/poll to kill some fds and retry */ 2175/* called on ENOMEM in select/poll to kill some fds and retry */
1014static void noinline 2176static void noinline ecb_cold
1015fd_enomem (EV_P) 2177fd_enomem (EV_P)
1016{ 2178{
1017 int fd; 2179 int fd;
1018 2180
1019 for (fd = anfdmax; fd--; ) 2181 for (fd = anfdmax; fd--; )
… …
1054} 2216}
1055 2217
1056/*****************************************************************************/ 2218/*****************************************************************************/
1057 2219
1058/* 2220/*
1059 * the heap functions want a real array index. array index 0 uis guaranteed to not 2221 * the heap functions want a real array index. array index 0 is guaranteed to not
1060 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 2222 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
1061 * the branching factor of the d-tree. 2223 * the branching factor of the d-tree.
1062 */ 2224 */
1063 2225
1064/* 2226/*
… …
1214 2376
1215/*****************************************************************************/ 2377/*****************************************************************************/
1216 2378
1217#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2379#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1218 2380
1219static void noinline 2381static void noinline ecb_cold
1220evpipe_init (EV_P) 2382evpipe_init (EV_P)
1221{ 2383{
1222 if (!ev_is_active (&pipe_w)) 2384 if (!ev_is_active (&pipe_w))
1223 { 2385 {
2386 int fds [2];
2387
1224# if EV_USE_EVENTFD 2388# if EV_USE_EVENTFD
2389 fds [0] = -1;
1225 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2390 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1226 if (evfd < 0 && errno == EINVAL) 2391 if (fds [1] < 0 && errno == EINVAL)
1227 evfd = eventfd (0, 0); 2392 fds [1] = eventfd (0, 0);
1228 2393
1229 if (evfd >= 0) 2394 if (fds [1] < 0)
2395# endif
1230 { 2396 {
2397 while (pipe (fds))
2398 ev_syserr ("(libev) error creating signal/async pipe");
2399
2400 fd_intern (fds [0]);
2401 }
2402
1231 evpipe [0] = -1; 2403 evpipe [0] = fds [0];
1232 fd_intern (evfd); /* doing it twice doesn't hurt */ 2404
1233 ev_io_set (&pipe_w, evfd, EV_READ); 2405 if (evpipe [1] < 0)
2406 evpipe [1] = fds [1]; /* first call, set write fd */
2407 else
2408 {
2409 /* on subsequent calls, do not change evpipe [1] */
2410 /* so that evpipe_write can always rely on its value. */
2411 /* this branch does not do anything sensible on windows, */
2412 /* so must not be executed on windows */
2413
2414 dup2 (fds [1], evpipe [1]);
2415 close (fds [1]);
2416 }
2417
2418 fd_intern (evpipe [1]);
2419
2420 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2421 ev_io_start (EV_A_ &pipe_w);
2422 ev_unref (EV_A); /* watcher should not keep loop alive */
2423 }
2424}
2425
2426inline_speed void
2427evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2428{
2429 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2430
2431 if (expect_true (*flag))
2432 return;
2433
2434 *flag = 1;
2435 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2436
2437 pipe_write_skipped = 1;
2438
2439 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2440
2441 if (pipe_write_wanted)
2442 {
2443 int old_errno;
2444
2445 pipe_write_skipped = 0;
2446 ECB_MEMORY_FENCE_RELEASE;
2447
2448 old_errno = errno; /* save errno because write will clobber it */
2449
2450#if EV_USE_EVENTFD
2451 if (evpipe [0] < 0)
2452 {
2453 uint64_t counter = 1;
2454 write (evpipe [1], &counter, sizeof (uint64_t));
1234 } 2455 }
1235 else 2456 else
1236# endif 2457#endif
1237 { 2458 {
1238 while (pipe (evpipe)) 2459#ifdef _WIN32
1239 ev_syserr ("(libev) error creating signal/async pipe"); 2460 WSABUF buf;
1240 2461 DWORD sent;
1241 fd_intern (evpipe [0]); 2462 buf.buf = &buf;
1242 fd_intern (evpipe [1]); 2463 buf.len = 1;
1243 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2464 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2465#else
2466 write (evpipe [1], &(evpipe [1]), 1);
2467#endif
1244 } 2468 }
1245
1246 ev_io_start (EV_A_ &pipe_w);
1247 ev_unref (EV_A); /* watcher should not keep loop alive */
1248 }
1249}
1250
1251inline_size void
1252evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1253{
1254 if (!*flag)
1255 {
1256 int old_errno = errno; /* save errno because write might clobber it */
1257 char dummy;
1258
1259 *flag = 1;
1260
1261#if EV_USE_EVENTFD
1262 if (evfd >= 0)
1263 {
1264 uint64_t counter = 1;
1265 write (evfd, &counter, sizeof (uint64_t));
1266 }
1267 else
1268#endif
1269 write (evpipe [1], &dummy, 1);
1270 2469
1271 errno = old_errno; 2470 errno = old_errno;
1272 } 2471 }
1273} 2472}
1274 2473
… …
1277static void 2476static void
1278pipecb (EV_P_ ev_io *iow, int revents) 2477pipecb (EV_P_ ev_io *iow, int revents)
1279{ 2478{
1280 int i; 2479 int i;
1281 2480
2481 if (revents & EV_READ)
2482 {
1282#if EV_USE_EVENTFD 2483#if EV_USE_EVENTFD
1283 if (evfd >= 0) 2484 if (evpipe [0] < 0)
1284 { 2485 {
1285 uint64_t counter; 2486 uint64_t counter;
1286 read (evfd, &counter, sizeof (uint64_t)); 2487 read (evpipe [1], &counter, sizeof (uint64_t));
1287 } 2488 }
1288 else 2489 else
1289#endif 2490#endif
1290 { 2491 {
1291 char dummy; 2492 char dummy[4];
2493#ifdef _WIN32
2494 WSABUF buf;
2495 DWORD recvd;
2496 DWORD flags = 0;
2497 buf.buf = dummy;
2498 buf.len = sizeof (dummy);
2499 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2500#else
1292 read (evpipe [0], &dummy, 1); 2501 read (evpipe [0], &dummy, sizeof (dummy));
2502#endif
2503 }
1293 } 2504 }
1294 2505
2506 pipe_write_skipped = 0;
2507
2508 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2509
2510#if EV_SIGNAL_ENABLE
1295 if (sig_pending) 2511 if (sig_pending)
1296 { 2512 {
1297 sig_pending = 0; 2513 sig_pending = 0;
2514
2515 ECB_MEMORY_FENCE;
1298 2516
1299 for (i = EV_NSIG - 1; i--; ) 2517 for (i = EV_NSIG - 1; i--; )
1300 if (expect_false (signals [i].pending)) 2518 if (expect_false (signals [i].pending))
1301 ev_feed_signal_event (EV_A_ i + 1); 2519 ev_feed_signal_event (EV_A_ i + 1);
1302 } 2520 }
2521#endif
1303 2522
1304#if EV_ASYNC_ENABLE 2523#if EV_ASYNC_ENABLE
1305 if (async_pending) 2524 if (async_pending)
1306 { 2525 {
1307 async_pending = 0; 2526 async_pending = 0;
2527
2528 ECB_MEMORY_FENCE;
1308 2529
1309 for (i = asynccnt; i--; ) 2530 for (i = asynccnt; i--; )
1310 if (asyncs [i]->sent) 2531 if (asyncs [i]->sent)
1311 { 2532 {
1312 asyncs [i]->sent = 0; 2533 asyncs [i]->sent = 0;
2534 ECB_MEMORY_FENCE_RELEASE;
1313 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2535 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1314 } 2536 }
1315 } 2537 }
1316#endif 2538#endif
1317} 2539}
1318 2540
1319/*****************************************************************************/ 2541/*****************************************************************************/
1320 2542
2543void
2544ev_feed_signal (int signum) EV_THROW
2545{
2546#if EV_MULTIPLICITY
2547 EV_P;
2548 ECB_MEMORY_FENCE_ACQUIRE;
2549 EV_A = signals [signum - 1].loop;
2550
2551 if (!EV_A)
2552 return;
2553#endif
2554
2555 signals [signum - 1].pending = 1;
2556 evpipe_write (EV_A_ &sig_pending);
2557}
2558
1321static void 2559static void
1322ev_sighandler (int signum) 2560ev_sighandler (int signum)
1323{ 2561{
1324#if EV_MULTIPLICITY
1325 EV_P = signals [signum - 1].loop;
1326#endif
1327
1328#ifdef _WIN32 2562#ifdef _WIN32
1329 signal (signum, ev_sighandler); 2563 signal (signum, ev_sighandler);
1330#endif 2564#endif
1331 2565
1332 signals [signum - 1].pending = 1; 2566 ev_feed_signal (signum);
1333 evpipe_write (EV_A_ &sig_pending);
1334} 2567}
1335 2568
1336void noinline 2569void noinline
1337ev_feed_signal_event (EV_P_ int signum) 2570ev_feed_signal_event (EV_P_ int signum) EV_THROW
1338{ 2571{
1339 WL w; 2572 WL w;
1340 2573
1341 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2574 if (expect_false (signum <= 0 || signum >= EV_NSIG))
1342 return; 2575 return;
1343 2576
1344 --signum; 2577 --signum;
1345 2578
1346#if EV_MULTIPLICITY 2579#if EV_MULTIPLICITY
… …
1350 if (expect_false (signals [signum].loop != EV_A)) 2583 if (expect_false (signals [signum].loop != EV_A))
1351 return; 2584 return;
1352#endif 2585#endif
1353 2586
1354 signals [signum].pending = 0; 2587 signals [signum].pending = 0;
2588 ECB_MEMORY_FENCE_RELEASE;
1355 2589
1356 for (w = signals [signum].head; w; w = w->next) 2590 for (w = signals [signum].head; w; w = w->next)
1357 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2591 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1358} 2592}
1359 2593
… …
1438 2672
1439#endif 2673#endif
1440 2674
1441/*****************************************************************************/ 2675/*****************************************************************************/
1442 2676
2677#if EV_USE_IOCP
2678# include "ev_iocp.c"
2679#endif
1443#if EV_USE_PORT 2680#if EV_USE_PORT
1444# include "ev_port.c" 2681# include "ev_port.c"
1445#endif 2682#endif
1446#if EV_USE_KQUEUE 2683#if EV_USE_KQUEUE
1447# include "ev_kqueue.c" 2684# include "ev_kqueue.c"
… …
1454#endif 2691#endif
1455#if EV_USE_SELECT 2692#if EV_USE_SELECT
1456# include "ev_select.c" 2693# include "ev_select.c"
1457#endif 2694#endif
1458 2695
1459int 2696int ecb_cold
1460ev_version_major (void) 2697ev_version_major (void) EV_THROW
1461{ 2698{
1462 return EV_VERSION_MAJOR; 2699 return EV_VERSION_MAJOR;
1463} 2700}
1464 2701
1465int 2702int ecb_cold
1466ev_version_minor (void) 2703ev_version_minor (void) EV_THROW
1467{ 2704{
1468 return EV_VERSION_MINOR; 2705 return EV_VERSION_MINOR;
1469} 2706}
1470 2707
1471/* return true if we are running with elevated privileges and should ignore env variables */ 2708/* return true if we are running with elevated privileges and should ignore env variables */
1472int inline_size 2709int inline_size ecb_cold
1473enable_secure (void) 2710enable_secure (void)
1474{ 2711{
1475#ifdef _WIN32 2712#ifdef _WIN32
1476 return 0; 2713 return 0;
1477#else 2714#else
1478 return getuid () != geteuid () 2715 return getuid () != geteuid ()
1479 || getgid () != getegid (); 2716 || getgid () != getegid ();
1480#endif 2717#endif
1481} 2718}
1482 2719
1483unsigned int 2720unsigned int ecb_cold
1484ev_supported_backends (void) 2721ev_supported_backends (void) EV_THROW
1485{ 2722{
1486 unsigned int flags = 0; 2723 unsigned int flags = 0;
1487 2724
1488 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2725 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1489 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2726 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1492 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2729 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1493 2730
1494 return flags; 2731 return flags;
1495} 2732}
1496 2733
1497unsigned int 2734unsigned int ecb_cold
1498ev_recommended_backends (void) 2735ev_recommended_backends (void) EV_THROW
1499{ 2736{
1500 unsigned int flags = ev_supported_backends (); 2737 unsigned int flags = ev_supported_backends ();
1501 2738
1502#ifndef __NetBSD__ 2739#ifndef __NetBSD__
1503 /* kqueue is borked on everything but netbsd apparently */ 2740 /* kqueue is borked on everything but netbsd apparently */
… …
1514#endif 2751#endif
1515 2752
1516 return flags; 2753 return flags;
1517} 2754}
1518 2755
2756unsigned int ecb_cold
2757ev_embeddable_backends (void) EV_THROW
2758{
2759 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2760
2761 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2762 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2763 flags &= ~EVBACKEND_EPOLL;
2764
2765 return flags;
2766}
2767
1519unsigned int 2768unsigned int
1520ev_embeddable_backends (void)
1521{
1522 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1523
1524 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1525 /* please fix it and tell me how to detect the fix */
1526 flags &= ~EVBACKEND_EPOLL;
1527
1528 return flags;
1529}
1530
1531unsigned int
1532ev_backend (EV_P) 2769ev_backend (EV_P) EV_THROW
1533{ 2770{
1534 return backend; 2771 return backend;
1535} 2772}
1536 2773
1537#if EV_FEATURE_API 2774#if EV_FEATURE_API
1538unsigned int 2775unsigned int
1539ev_iteration (EV_P) 2776ev_iteration (EV_P) EV_THROW
1540{ 2777{
1541 return loop_count; 2778 return loop_count;
1542} 2779}
1543 2780
1544unsigned int 2781unsigned int
1545ev_depth (EV_P) 2782ev_depth (EV_P) EV_THROW
1546{ 2783{
1547 return loop_depth; 2784 return loop_depth;
1548} 2785}
1549 2786
1550void 2787void
1551ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2788ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1552{ 2789{
1553 io_blocktime = interval; 2790 io_blocktime = interval;
1554} 2791}
1555 2792
1556void 2793void
1557ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2794ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1558{ 2795{
1559 timeout_blocktime = interval; 2796 timeout_blocktime = interval;
1560} 2797}
1561 2798
1562void 2799void
1563ev_set_userdata (EV_P_ void *data) 2800ev_set_userdata (EV_P_ void *data) EV_THROW
1564{ 2801{
1565 userdata = data; 2802 userdata = data;
1566} 2803}
1567 2804
1568void * 2805void *
1569ev_userdata (EV_P) 2806ev_userdata (EV_P) EV_THROW
1570{ 2807{
1571 return userdata; 2808 return userdata;
1572} 2809}
1573 2810
2811void
1574void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2812ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_THROW
1575{ 2813{
1576 invoke_cb = invoke_pending_cb; 2814 invoke_cb = invoke_pending_cb;
1577} 2815}
1578 2816
2817void
1579void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2818ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
1580{ 2819{
1581 release_cb = release; 2820 release_cb = release;
1582 acquire_cb = acquire; 2821 acquire_cb = acquire;
1583} 2822}
1584#endif 2823#endif
1585 2824
1586/* initialise a loop structure, must be zero-initialised */ 2825/* initialise a loop structure, must be zero-initialised */
1587static void noinline 2826static void noinline ecb_cold
1588loop_init (EV_P_ unsigned int flags) 2827loop_init (EV_P_ unsigned int flags) EV_THROW
1589{ 2828{
1590 if (!backend) 2829 if (!backend)
1591 { 2830 {
2831 origflags = flags;
2832
1592#if EV_USE_REALTIME 2833#if EV_USE_REALTIME
1593 if (!have_realtime) 2834 if (!have_realtime)
1594 { 2835 {
1595 struct timespec ts; 2836 struct timespec ts;
1596 2837
… …
1618 if (!(flags & EVFLAG_NOENV) 2859 if (!(flags & EVFLAG_NOENV)
1619 && !enable_secure () 2860 && !enable_secure ()
1620 && getenv ("LIBEV_FLAGS")) 2861 && getenv ("LIBEV_FLAGS"))
1621 flags = atoi (getenv ("LIBEV_FLAGS")); 2862 flags = atoi (getenv ("LIBEV_FLAGS"));
1622 2863
1623 ev_rt_now = ev_time (); 2864 ev_rt_now = ev_time ();
1624 mn_now = get_clock (); 2865 mn_now = get_clock ();
1625 now_floor = mn_now; 2866 now_floor = mn_now;
1626 rtmn_diff = ev_rt_now - mn_now; 2867 rtmn_diff = ev_rt_now - mn_now;
1627#if EV_FEATURE_API 2868#if EV_FEATURE_API
1628 invoke_cb = ev_invoke_pending; 2869 invoke_cb = ev_invoke_pending;
1629#endif 2870#endif
1630 2871
1631 io_blocktime = 0.; 2872 io_blocktime = 0.;
1632 timeout_blocktime = 0.; 2873 timeout_blocktime = 0.;
1633 backend = 0; 2874 backend = 0;
1634 backend_fd = -1; 2875 backend_fd = -1;
1635 sig_pending = 0; 2876 sig_pending = 0;
1636#if EV_ASYNC_ENABLE 2877#if EV_ASYNC_ENABLE
1637 async_pending = 0; 2878 async_pending = 0;
1638#endif 2879#endif
2880 pipe_write_skipped = 0;
2881 pipe_write_wanted = 0;
2882 evpipe [0] = -1;
2883 evpipe [1] = -1;
1639#if EV_USE_INOTIFY 2884#if EV_USE_INOTIFY
1640 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2885 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1641#endif 2886#endif
1642#if EV_USE_SIGNALFD 2887#if EV_USE_SIGNALFD
1643 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2888 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1644#endif 2889#endif
1645 2890
1646 if (!(flags & 0x0000ffffU)) 2891 if (!(flags & EVBACKEND_MASK))
1647 flags |= ev_recommended_backends (); 2892 flags |= ev_recommended_backends ();
1648 2893
2894#if EV_USE_IOCP
2895 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2896#endif
1649#if EV_USE_PORT 2897#if EV_USE_PORT
1650 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2898 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1651#endif 2899#endif
1652#if EV_USE_KQUEUE 2900#if EV_USE_KQUEUE
1653 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2901 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1670#endif 2918#endif
1671 } 2919 }
1672} 2920}
1673 2921
1674/* free up a loop structure */ 2922/* free up a loop structure */
1675static void noinline 2923void ecb_cold
1676loop_destroy (EV_P) 2924ev_loop_destroy (EV_P)
1677{ 2925{
1678 int i; 2926 int i;
2927
2928#if EV_MULTIPLICITY
2929 /* mimic free (0) */
2930 if (!EV_A)
2931 return;
2932#endif
2933
2934#if EV_CLEANUP_ENABLE
2935 /* queue cleanup watchers (and execute them) */
2936 if (expect_false (cleanupcnt))
2937 {
2938 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2939 EV_INVOKE_PENDING;
2940 }
2941#endif
2942
2943#if EV_CHILD_ENABLE
2944 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2945 {
2946 ev_ref (EV_A); /* child watcher */
2947 ev_signal_stop (EV_A_ &childev);
2948 }
2949#endif
1679 2950
1680 if (ev_is_active (&pipe_w)) 2951 if (ev_is_active (&pipe_w))
1681 { 2952 {
1682 /*ev_ref (EV_A);*/ 2953 /*ev_ref (EV_A);*/
1683 /*ev_io_stop (EV_A_ &pipe_w);*/ 2954 /*ev_io_stop (EV_A_ &pipe_w);*/
1684 2955
1685#if EV_USE_EVENTFD
1686 if (evfd >= 0)
1687 close (evfd);
1688#endif
1689
1690 if (evpipe [0] >= 0)
1691 {
1692 EV_WIN32_CLOSE_FD (evpipe [0]); 2956 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1693 EV_WIN32_CLOSE_FD (evpipe [1]); 2957 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1694 }
1695 } 2958 }
1696 2959
1697#if EV_USE_SIGNALFD 2960#if EV_USE_SIGNALFD
1698 if (ev_is_active (&sigfd_w)) 2961 if (ev_is_active (&sigfd_w))
1699 close (sigfd); 2962 close (sigfd);
… …
1705#endif 2968#endif
1706 2969
1707 if (backend_fd >= 0) 2970 if (backend_fd >= 0)
1708 close (backend_fd); 2971 close (backend_fd);
1709 2972
2973#if EV_USE_IOCP
2974 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2975#endif
1710#if EV_USE_PORT 2976#if EV_USE_PORT
1711 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2977 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1712#endif 2978#endif
1713#if EV_USE_KQUEUE 2979#if EV_USE_KQUEUE
1714 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2980 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1741 array_free (periodic, EMPTY); 3007 array_free (periodic, EMPTY);
1742#endif 3008#endif
1743#if EV_FORK_ENABLE 3009#if EV_FORK_ENABLE
1744 array_free (fork, EMPTY); 3010 array_free (fork, EMPTY);
1745#endif 3011#endif
3012#if EV_CLEANUP_ENABLE
3013 array_free (cleanup, EMPTY);
3014#endif
1746 array_free (prepare, EMPTY); 3015 array_free (prepare, EMPTY);
1747 array_free (check, EMPTY); 3016 array_free (check, EMPTY);
1748#if EV_ASYNC_ENABLE 3017#if EV_ASYNC_ENABLE
1749 array_free (async, EMPTY); 3018 array_free (async, EMPTY);
1750#endif 3019#endif
1751 3020
1752 backend = 0; 3021 backend = 0;
3022
3023#if EV_MULTIPLICITY
3024 if (ev_is_default_loop (EV_A))
3025#endif
3026 ev_default_loop_ptr = 0;
3027#if EV_MULTIPLICITY
3028 else
3029 ev_free (EV_A);
3030#endif
1753} 3031}
1754 3032
1755#if EV_USE_INOTIFY 3033#if EV_USE_INOTIFY
1756inline_size void infy_fork (EV_P); 3034inline_size void infy_fork (EV_P);
1757#endif 3035#endif
… …
1770#endif 3048#endif
1771#if EV_USE_INOTIFY 3049#if EV_USE_INOTIFY
1772 infy_fork (EV_A); 3050 infy_fork (EV_A);
1773#endif 3051#endif
1774 3052
3053#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1775 if (ev_is_active (&pipe_w)) 3054 if (ev_is_active (&pipe_w) && postfork != 2)
1776 { 3055 {
1777 /* this "locks" the handlers against writing to the pipe */ 3056 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1778 /* while we modify the fd vars */
1779 sig_pending = 1;
1780#if EV_ASYNC_ENABLE
1781 async_pending = 1;
1782#endif
1783 3057
1784 ev_ref (EV_A); 3058 ev_ref (EV_A);
1785 ev_io_stop (EV_A_ &pipe_w); 3059 ev_io_stop (EV_A_ &pipe_w);
1786 3060
1787#if EV_USE_EVENTFD
1788 if (evfd >= 0)
1789 close (evfd);
1790#endif
1791
1792 if (evpipe [0] >= 0) 3061 if (evpipe [0] >= 0)
1793 {
1794 EV_WIN32_CLOSE_FD (evpipe [0]); 3062 EV_WIN32_CLOSE_FD (evpipe [0]);
1795 EV_WIN32_CLOSE_FD (evpipe [1]);
1796 }
1797 3063
1798#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1799 evpipe_init (EV_A); 3064 evpipe_init (EV_A);
1800 /* now iterate over everything, in case we missed something */ 3065 /* iterate over everything, in case we missed something before */
1801 pipecb (EV_A_ &pipe_w, EV_READ); 3066 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1802#endif
1803 } 3067 }
3068#endif
1804 3069
1805 postfork = 0; 3070 postfork = 0;
1806} 3071}
1807 3072
1808#if EV_MULTIPLICITY 3073#if EV_MULTIPLICITY
1809 3074
1810struct ev_loop * 3075struct ev_loop * ecb_cold
1811ev_loop_new (unsigned int flags) 3076ev_loop_new (unsigned int flags) EV_THROW
1812{ 3077{
1813 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3078 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1814 3079
1815 memset (EV_A, 0, sizeof (struct ev_loop)); 3080 memset (EV_A, 0, sizeof (struct ev_loop));
1816 loop_init (EV_A_ flags); 3081 loop_init (EV_A_ flags);
1817 3082
1818 if (ev_backend (EV_A)) 3083 if (ev_backend (EV_A))
1819 return EV_A; 3084 return EV_A;
1820 3085
3086 ev_free (EV_A);
1821 return 0; 3087 return 0;
1822} 3088}
1823 3089
1824void
1825ev_loop_destroy (EV_P)
1826{
1827 loop_destroy (EV_A);
1828 ev_free (loop);
1829}
1830
1831void
1832ev_loop_fork (EV_P)
1833{
1834 postfork = 1; /* must be in line with ev_default_fork */
1835}
1836#endif /* multiplicity */ 3090#endif /* multiplicity */
1837 3091
1838#if EV_VERIFY 3092#if EV_VERIFY
1839static void noinline 3093static void noinline ecb_cold
1840verify_watcher (EV_P_ W w) 3094verify_watcher (EV_P_ W w)
1841{ 3095{
1842 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3096 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1843 3097
1844 if (w->pending) 3098 if (w->pending)
1845 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3099 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1846} 3100}
1847 3101
1848static void noinline 3102static void noinline ecb_cold
1849verify_heap (EV_P_ ANHE *heap, int N) 3103verify_heap (EV_P_ ANHE *heap, int N)
1850{ 3104{
1851 int i; 3105 int i;
1852 3106
1853 for (i = HEAP0; i < N + HEAP0; ++i) 3107 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1858 3112
1859 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3113 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1860 } 3114 }
1861} 3115}
1862 3116
1863static void noinline 3117static void noinline ecb_cold
1864array_verify (EV_P_ W *ws, int cnt) 3118array_verify (EV_P_ W *ws, int cnt)
1865{ 3119{
1866 while (cnt--) 3120 while (cnt--)
1867 { 3121 {
1868 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3122 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
1870 } 3124 }
1871} 3125}
1872#endif 3126#endif
1873 3127
1874#if EV_FEATURE_API 3128#if EV_FEATURE_API
1875void 3129void ecb_cold
1876ev_verify (EV_P) 3130ev_verify (EV_P) EV_THROW
1877{ 3131{
1878#if EV_VERIFY 3132#if EV_VERIFY
1879 int i; 3133 int i;
1880 WL w; 3134 WL w, w2;
1881 3135
1882 assert (activecnt >= -1); 3136 assert (activecnt >= -1);
1883 3137
1884 assert (fdchangemax >= fdchangecnt); 3138 assert (fdchangemax >= fdchangecnt);
1885 for (i = 0; i < fdchangecnt; ++i) 3139 for (i = 0; i < fdchangecnt; ++i)
1886 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3140 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1887 3141
1888 assert (anfdmax >= 0); 3142 assert (anfdmax >= 0);
1889 for (i = 0; i < anfdmax; ++i) 3143 for (i = 0; i < anfdmax; ++i)
3144 {
3145 int j = 0;
3146
1890 for (w = anfds [i].head; w; w = w->next) 3147 for (w = w2 = anfds [i].head; w; w = w->next)
1891 { 3148 {
1892 verify_watcher (EV_A_ (W)w); 3149 verify_watcher (EV_A_ (W)w);
3150
3151 if (j++ & 1)
3152 {
3153 assert (("libev: io watcher list contains a loop", w != w2));
3154 w2 = w2->next;
3155 }
3156
1893 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3157 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1894 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 3158 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1895 } 3159 }
3160 }
1896 3161
1897 assert (timermax >= timercnt); 3162 assert (timermax >= timercnt);
1898 verify_heap (EV_A_ timers, timercnt); 3163 verify_heap (EV_A_ timers, timercnt);
1899 3164
1900#if EV_PERIODIC_ENABLE 3165#if EV_PERIODIC_ENABLE
… …
1915#if EV_FORK_ENABLE 3180#if EV_FORK_ENABLE
1916 assert (forkmax >= forkcnt); 3181 assert (forkmax >= forkcnt);
1917 array_verify (EV_A_ (W *)forks, forkcnt); 3182 array_verify (EV_A_ (W *)forks, forkcnt);
1918#endif 3183#endif
1919 3184
3185#if EV_CLEANUP_ENABLE
3186 assert (cleanupmax >= cleanupcnt);
3187 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
3188#endif
3189
1920#if EV_ASYNC_ENABLE 3190#if EV_ASYNC_ENABLE
1921 assert (asyncmax >= asynccnt); 3191 assert (asyncmax >= asynccnt);
1922 array_verify (EV_A_ (W *)asyncs, asynccnt); 3192 array_verify (EV_A_ (W *)asyncs, asynccnt);
1923#endif 3193#endif
1924 3194
… …
1941#endif 3211#endif
1942} 3212}
1943#endif 3213#endif
1944 3214
1945#if EV_MULTIPLICITY 3215#if EV_MULTIPLICITY
1946struct ev_loop * 3216struct ev_loop * ecb_cold
1947ev_default_loop_init (unsigned int flags)
1948#else 3217#else
1949int 3218int
3219#endif
1950ev_default_loop (unsigned int flags) 3220ev_default_loop (unsigned int flags) EV_THROW
1951#endif
1952{ 3221{
1953 if (!ev_default_loop_ptr) 3222 if (!ev_default_loop_ptr)
1954 { 3223 {
1955#if EV_MULTIPLICITY 3224#if EV_MULTIPLICITY
1956 EV_P = ev_default_loop_ptr = &default_loop_struct; 3225 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1975 3244
1976 return ev_default_loop_ptr; 3245 return ev_default_loop_ptr;
1977} 3246}
1978 3247
1979void 3248void
1980ev_default_destroy (void) 3249ev_loop_fork (EV_P) EV_THROW
1981{ 3250{
1982#if EV_MULTIPLICITY 3251 postfork = 1;
1983 EV_P = ev_default_loop_ptr;
1984#endif
1985
1986 ev_default_loop_ptr = 0;
1987
1988#if EV_CHILD_ENABLE
1989 ev_ref (EV_A); /* child watcher */
1990 ev_signal_stop (EV_A_ &childev);
1991#endif
1992
1993 loop_destroy (EV_A);
1994}
1995
1996void
1997ev_default_fork (void)
1998{
1999#if EV_MULTIPLICITY
2000 EV_P = ev_default_loop_ptr;
2001#endif
2002
2003 postfork = 1; /* must be in line with ev_loop_fork */
2004} 3252}
2005 3253
2006/*****************************************************************************/ 3254/*****************************************************************************/
2007 3255
2008void 3256void
… …
2010{ 3258{
2011 EV_CB_INVOKE ((W)w, revents); 3259 EV_CB_INVOKE ((W)w, revents);
2012} 3260}
2013 3261
2014unsigned int 3262unsigned int
2015ev_pending_count (EV_P) 3263ev_pending_count (EV_P) EV_THROW
2016{ 3264{
2017 int pri; 3265 int pri;
2018 unsigned int count = 0; 3266 unsigned int count = 0;
2019 3267
2020 for (pri = NUMPRI; pri--; ) 3268 for (pri = NUMPRI; pri--; )
… …
2024} 3272}
2025 3273
2026void noinline 3274void noinline
2027ev_invoke_pending (EV_P) 3275ev_invoke_pending (EV_P)
2028{ 3276{
2029 int pri; 3277 pendingpri = NUMPRI;
2030 3278
2031 for (pri = NUMPRI; pri--; ) 3279 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */
3280 {
3281 --pendingpri;
3282
2032 while (pendingcnt [pri]) 3283 while (pendingcnt [pendingpri])
2033 { 3284 {
2034 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3285 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2035 3286
2036 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2037 /* ^ this is no longer true, as pending_w could be here */
2038
2039 p->w->pending = 0; 3287 p->w->pending = 0;
2040 EV_CB_INVOKE (p->w, p->events); 3288 EV_CB_INVOKE (p->w, p->events);
2041 EV_FREQUENT_CHECK; 3289 EV_FREQUENT_CHECK;
2042 } 3290 }
3291 }
2043} 3292}
2044 3293
2045#if EV_IDLE_ENABLE 3294#if EV_IDLE_ENABLE
2046/* make idle watchers pending. this handles the "call-idle */ 3295/* make idle watchers pending. this handles the "call-idle */
2047/* only when higher priorities are idle" logic */ 3296/* only when higher priorities are idle" logic */
… …
2104 feed_reverse_done (EV_A_ EV_TIMER); 3353 feed_reverse_done (EV_A_ EV_TIMER);
2105 } 3354 }
2106} 3355}
2107 3356
2108#if EV_PERIODIC_ENABLE 3357#if EV_PERIODIC_ENABLE
3358
3359static void noinline
3360periodic_recalc (EV_P_ ev_periodic *w)
3361{
3362 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3363 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3364
3365 /* the above almost always errs on the low side */
3366 while (at <= ev_rt_now)
3367 {
3368 ev_tstamp nat = at + w->interval;
3369
3370 /* when resolution fails us, we use ev_rt_now */
3371 if (expect_false (nat == at))
3372 {
3373 at = ev_rt_now;
3374 break;
3375 }
3376
3377 at = nat;
3378 }
3379
3380 ev_at (w) = at;
3381}
3382
2109/* make periodics pending */ 3383/* make periodics pending */
2110inline_size void 3384inline_size void
2111periodics_reify (EV_P) 3385periodics_reify (EV_P)
2112{ 3386{
2113 EV_FREQUENT_CHECK; 3387 EV_FREQUENT_CHECK;
2114 3388
2115 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3389 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2116 { 3390 {
2117 int feed_count = 0;
2118
2119 do 3391 do
2120 { 3392 {
2121 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3393 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2122 3394
2123 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3395 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2132 ANHE_at_cache (periodics [HEAP0]); 3404 ANHE_at_cache (periodics [HEAP0]);
2133 downheap (periodics, periodiccnt, HEAP0); 3405 downheap (periodics, periodiccnt, HEAP0);
2134 } 3406 }
2135 else if (w->interval) 3407 else if (w->interval)
2136 { 3408 {
2137 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3409 periodic_recalc (EV_A_ w);
2138 /* if next trigger time is not sufficiently in the future, put it there */
2139 /* this might happen because of floating point inexactness */
2140 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2141 {
2142 ev_at (w) += w->interval;
2143
2144 /* if interval is unreasonably low we might still have a time in the past */
2145 /* so correct this. this will make the periodic very inexact, but the user */
2146 /* has effectively asked to get triggered more often than possible */
2147 if (ev_at (w) < ev_rt_now)
2148 ev_at (w) = ev_rt_now;
2149 }
2150
2151 ANHE_at_cache (periodics [HEAP0]); 3410 ANHE_at_cache (periodics [HEAP0]);
2152 downheap (periodics, periodiccnt, HEAP0); 3411 downheap (periodics, periodiccnt, HEAP0);
2153 } 3412 }
2154 else 3413 else
2155 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3414 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2162 feed_reverse_done (EV_A_ EV_PERIODIC); 3421 feed_reverse_done (EV_A_ EV_PERIODIC);
2163 } 3422 }
2164} 3423}
2165 3424
2166/* simply recalculate all periodics */ 3425/* simply recalculate all periodics */
2167/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 3426/* TODO: maybe ensure that at least one event happens when jumping forward? */
2168static void noinline 3427static void noinline ecb_cold
2169periodics_reschedule (EV_P) 3428periodics_reschedule (EV_P)
2170{ 3429{
2171 int i; 3430 int i;
2172 3431
2173 /* adjust periodics after time jump */ 3432 /* adjust periodics after time jump */
… …
2176 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3435 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2177 3436
2178 if (w->reschedule_cb) 3437 if (w->reschedule_cb)
2179 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3438 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2180 else if (w->interval) 3439 else if (w->interval)
2181 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3440 periodic_recalc (EV_A_ w);
2182 3441
2183 ANHE_at_cache (periodics [i]); 3442 ANHE_at_cache (periodics [i]);
2184 } 3443 }
2185 3444
2186 reheap (periodics, periodiccnt); 3445 reheap (periodics, periodiccnt);
2187} 3446}
2188#endif 3447#endif
2189 3448
2190/* adjust all timers by a given offset */ 3449/* adjust all timers by a given offset */
2191static void noinline 3450static void noinline ecb_cold
2192timers_reschedule (EV_P_ ev_tstamp adjust) 3451timers_reschedule (EV_P_ ev_tstamp adjust)
2193{ 3452{
2194 int i; 3453 int i;
2195 3454
2196 for (i = 0; i < timercnt; ++i) 3455 for (i = 0; i < timercnt; ++i)
… …
2233 * doesn't hurt either as we only do this on time-jumps or 3492 * doesn't hurt either as we only do this on time-jumps or
2234 * in the unlikely event of having been preempted here. 3493 * in the unlikely event of having been preempted here.
2235 */ 3494 */
2236 for (i = 4; --i; ) 3495 for (i = 4; --i; )
2237 { 3496 {
3497 ev_tstamp diff;
2238 rtmn_diff = ev_rt_now - mn_now; 3498 rtmn_diff = ev_rt_now - mn_now;
2239 3499
3500 diff = odiff - rtmn_diff;
3501
2240 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3502 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2241 return; /* all is well */ 3503 return; /* all is well */
2242 3504
2243 ev_rt_now = ev_time (); 3505 ev_rt_now = ev_time ();
2244 mn_now = get_clock (); 3506 mn_now = get_clock ();
2245 now_floor = mn_now; 3507 now_floor = mn_now;
… …
2267 3529
2268 mn_now = ev_rt_now; 3530 mn_now = ev_rt_now;
2269 } 3531 }
2270} 3532}
2271 3533
2272void 3534int
2273ev_loop (EV_P_ int flags) 3535ev_run (EV_P_ int flags)
2274{ 3536{
2275#if EV_FEATURE_API 3537#if EV_FEATURE_API
2276 ++loop_depth; 3538 ++loop_depth;
2277#endif 3539#endif
2278 3540
2279 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 3541 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2280 3542
2281 loop_done = EVUNLOOP_CANCEL; 3543 loop_done = EVBREAK_CANCEL;
2282 3544
2283 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 3545 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2284 3546
2285 do 3547 do
2286 { 3548 {
… …
2329 /* calculate blocking time */ 3591 /* calculate blocking time */
2330 { 3592 {
2331 ev_tstamp waittime = 0.; 3593 ev_tstamp waittime = 0.;
2332 ev_tstamp sleeptime = 0.; 3594 ev_tstamp sleeptime = 0.;
2333 3595
3596 /* remember old timestamp for io_blocktime calculation */
3597 ev_tstamp prev_mn_now = mn_now;
3598
3599 /* update time to cancel out callback processing overhead */
3600 time_update (EV_A_ 1e100);
3601
3602 /* from now on, we want a pipe-wake-up */
3603 pipe_write_wanted = 1;
3604
3605 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3606
2334 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3607 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2335 { 3608 {
2336 /* remember old timestamp for io_blocktime calculation */
2337 ev_tstamp prev_mn_now = mn_now;
2338
2339 /* update time to cancel out callback processing overhead */
2340 time_update (EV_A_ 1e100);
2341
2342 waittime = MAX_BLOCKTIME; 3609 waittime = MAX_BLOCKTIME;
2343 3610
2344 if (timercnt) 3611 if (timercnt)
2345 { 3612 {
2346 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3613 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2347 if (waittime > to) waittime = to; 3614 if (waittime > to) waittime = to;
2348 } 3615 }
2349 3616
2350#if EV_PERIODIC_ENABLE 3617#if EV_PERIODIC_ENABLE
2351 if (periodiccnt) 3618 if (periodiccnt)
2352 { 3619 {
2353 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3620 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2354 if (waittime > to) waittime = to; 3621 if (waittime > to) waittime = to;
2355 } 3622 }
2356#endif 3623#endif
2357 3624
2358 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3625 /* don't let timeouts decrease the waittime below timeout_blocktime */
2359 if (expect_false (waittime < timeout_blocktime)) 3626 if (expect_false (waittime < timeout_blocktime))
2360 waittime = timeout_blocktime; 3627 waittime = timeout_blocktime;
3628
3629 /* at this point, we NEED to wait, so we have to ensure */
3630 /* to pass a minimum nonzero value to the backend */
3631 if (expect_false (waittime < backend_mintime))
3632 waittime = backend_mintime;
2361 3633
2362 /* extra check because io_blocktime is commonly 0 */ 3634 /* extra check because io_blocktime is commonly 0 */
2363 if (expect_false (io_blocktime)) 3635 if (expect_false (io_blocktime))
2364 { 3636 {
2365 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3637 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2366 3638
2367 if (sleeptime > waittime - backend_fudge) 3639 if (sleeptime > waittime - backend_mintime)
2368 sleeptime = waittime - backend_fudge; 3640 sleeptime = waittime - backend_mintime;
2369 3641
2370 if (expect_true (sleeptime > 0.)) 3642 if (expect_true (sleeptime > 0.))
2371 { 3643 {
2372 ev_sleep (sleeptime); 3644 ev_sleep (sleeptime);
2373 waittime -= sleeptime; 3645 waittime -= sleeptime;
… …
2376 } 3648 }
2377 3649
2378#if EV_FEATURE_API 3650#if EV_FEATURE_API
2379 ++loop_count; 3651 ++loop_count;
2380#endif 3652#endif
2381 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3653 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2382 backend_poll (EV_A_ waittime); 3654 backend_poll (EV_A_ waittime);
2383 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 3655 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3656
3657 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3658
3659 ECB_MEMORY_FENCE_ACQUIRE;
3660 if (pipe_write_skipped)
3661 {
3662 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3663 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3664 }
3665
2384 3666
2385 /* update ev_rt_now, do magic */ 3667 /* update ev_rt_now, do magic */
2386 time_update (EV_A_ waittime + sleeptime); 3668 time_update (EV_A_ waittime + sleeptime);
2387 } 3669 }
2388 3670
… …
2406 EV_INVOKE_PENDING; 3688 EV_INVOKE_PENDING;
2407 } 3689 }
2408 while (expect_true ( 3690 while (expect_true (
2409 activecnt 3691 activecnt
2410 && !loop_done 3692 && !loop_done
2411 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3693 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2412 )); 3694 ));
2413 3695
2414 if (loop_done == EVUNLOOP_ONE) 3696 if (loop_done == EVBREAK_ONE)
2415 loop_done = EVUNLOOP_CANCEL; 3697 loop_done = EVBREAK_CANCEL;
2416 3698
2417#if EV_FEATURE_API 3699#if EV_FEATURE_API
2418 --loop_depth; 3700 --loop_depth;
2419#endif 3701#endif
3702
3703 return activecnt;
2420} 3704}
2421 3705
2422void 3706void
2423ev_unloop (EV_P_ int how) 3707ev_break (EV_P_ int how) EV_THROW
2424{ 3708{
2425 loop_done = how; 3709 loop_done = how;
2426} 3710}
2427 3711
2428void 3712void
2429ev_ref (EV_P) 3713ev_ref (EV_P) EV_THROW
2430{ 3714{
2431 ++activecnt; 3715 ++activecnt;
2432} 3716}
2433 3717
2434void 3718void
2435ev_unref (EV_P) 3719ev_unref (EV_P) EV_THROW
2436{ 3720{
2437 --activecnt; 3721 --activecnt;
2438} 3722}
2439 3723
2440void 3724void
2441ev_now_update (EV_P) 3725ev_now_update (EV_P) EV_THROW
2442{ 3726{
2443 time_update (EV_A_ 1e100); 3727 time_update (EV_A_ 1e100);
2444} 3728}
2445 3729
2446void 3730void
2447ev_suspend (EV_P) 3731ev_suspend (EV_P) EV_THROW
2448{ 3732{
2449 ev_now_update (EV_A); 3733 ev_now_update (EV_A);
2450} 3734}
2451 3735
2452void 3736void
2453ev_resume (EV_P) 3737ev_resume (EV_P) EV_THROW
2454{ 3738{
2455 ev_tstamp mn_prev = mn_now; 3739 ev_tstamp mn_prev = mn_now;
2456 3740
2457 ev_now_update (EV_A); 3741 ev_now_update (EV_A);
2458 timers_reschedule (EV_A_ mn_now - mn_prev); 3742 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2497 w->pending = 0; 3781 w->pending = 0;
2498 } 3782 }
2499} 3783}
2500 3784
2501int 3785int
2502ev_clear_pending (EV_P_ void *w) 3786ev_clear_pending (EV_P_ void *w) EV_THROW
2503{ 3787{
2504 W w_ = (W)w; 3788 W w_ = (W)w;
2505 int pending = w_->pending; 3789 int pending = w_->pending;
2506 3790
2507 if (expect_true (pending)) 3791 if (expect_true (pending))
… …
2540} 3824}
2541 3825
2542/*****************************************************************************/ 3826/*****************************************************************************/
2543 3827
2544void noinline 3828void noinline
2545ev_io_start (EV_P_ ev_io *w) 3829ev_io_start (EV_P_ ev_io *w) EV_THROW
2546{ 3830{
2547 int fd = w->fd; 3831 int fd = w->fd;
2548 3832
2549 if (expect_false (ev_is_active (w))) 3833 if (expect_false (ev_is_active (w)))
2550 return; 3834 return;
… …
2556 3840
2557 ev_start (EV_A_ (W)w, 1); 3841 ev_start (EV_A_ (W)w, 1);
2558 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3842 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2559 wlist_add (&anfds[fd].head, (WL)w); 3843 wlist_add (&anfds[fd].head, (WL)w);
2560 3844
3845 /* common bug, apparently */
3846 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3847
2561 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3848 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2562 w->events &= ~EV__IOFDSET; 3849 w->events &= ~EV__IOFDSET;
2563 3850
2564 EV_FREQUENT_CHECK; 3851 EV_FREQUENT_CHECK;
2565} 3852}
2566 3853
2567void noinline 3854void noinline
2568ev_io_stop (EV_P_ ev_io *w) 3855ev_io_stop (EV_P_ ev_io *w) EV_THROW
2569{ 3856{
2570 clear_pending (EV_A_ (W)w); 3857 clear_pending (EV_A_ (W)w);
2571 if (expect_false (!ev_is_active (w))) 3858 if (expect_false (!ev_is_active (w)))
2572 return; 3859 return;
2573 3860
… …
2576 EV_FREQUENT_CHECK; 3863 EV_FREQUENT_CHECK;
2577 3864
2578 wlist_del (&anfds[w->fd].head, (WL)w); 3865 wlist_del (&anfds[w->fd].head, (WL)w);
2579 ev_stop (EV_A_ (W)w); 3866 ev_stop (EV_A_ (W)w);
2580 3867
2581 fd_change (EV_A_ w->fd, 1); 3868 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2582 3869
2583 EV_FREQUENT_CHECK; 3870 EV_FREQUENT_CHECK;
2584} 3871}
2585 3872
2586void noinline 3873void noinline
2587ev_timer_start (EV_P_ ev_timer *w) 3874ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2588{ 3875{
2589 if (expect_false (ev_is_active (w))) 3876 if (expect_false (ev_is_active (w)))
2590 return; 3877 return;
2591 3878
2592 ev_at (w) += mn_now; 3879 ev_at (w) += mn_now;
… …
2606 3893
2607 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3894 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2608} 3895}
2609 3896
2610void noinline 3897void noinline
2611ev_timer_stop (EV_P_ ev_timer *w) 3898ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2612{ 3899{
2613 clear_pending (EV_A_ (W)w); 3900 clear_pending (EV_A_ (W)w);
2614 if (expect_false (!ev_is_active (w))) 3901 if (expect_false (!ev_is_active (w)))
2615 return; 3902 return;
2616 3903
… …
2636 3923
2637 EV_FREQUENT_CHECK; 3924 EV_FREQUENT_CHECK;
2638} 3925}
2639 3926
2640void noinline 3927void noinline
2641ev_timer_again (EV_P_ ev_timer *w) 3928ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2642{ 3929{
2643 EV_FREQUENT_CHECK; 3930 EV_FREQUENT_CHECK;
3931
3932 clear_pending (EV_A_ (W)w);
2644 3933
2645 if (ev_is_active (w)) 3934 if (ev_is_active (w))
2646 { 3935 {
2647 if (w->repeat) 3936 if (w->repeat)
2648 { 3937 {
… …
2661 3950
2662 EV_FREQUENT_CHECK; 3951 EV_FREQUENT_CHECK;
2663} 3952}
2664 3953
2665ev_tstamp 3954ev_tstamp
2666ev_timer_remaining (EV_P_ ev_timer *w) 3955ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
2667{ 3956{
2668 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3957 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2669} 3958}
2670 3959
2671#if EV_PERIODIC_ENABLE 3960#if EV_PERIODIC_ENABLE
2672void noinline 3961void noinline
2673ev_periodic_start (EV_P_ ev_periodic *w) 3962ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2674{ 3963{
2675 if (expect_false (ev_is_active (w))) 3964 if (expect_false (ev_is_active (w)))
2676 return; 3965 return;
2677 3966
2678 if (w->reschedule_cb) 3967 if (w->reschedule_cb)
2679 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3968 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2680 else if (w->interval) 3969 else if (w->interval)
2681 { 3970 {
2682 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3971 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2683 /* this formula differs from the one in periodic_reify because we do not always round up */ 3972 periodic_recalc (EV_A_ w);
2684 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2685 } 3973 }
2686 else 3974 else
2687 ev_at (w) = w->offset; 3975 ev_at (w) = w->offset;
2688 3976
2689 EV_FREQUENT_CHECK; 3977 EV_FREQUENT_CHECK;
… …
2699 3987
2700 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3988 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2701} 3989}
2702 3990
2703void noinline 3991void noinline
2704ev_periodic_stop (EV_P_ ev_periodic *w) 3992ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2705{ 3993{
2706 clear_pending (EV_A_ (W)w); 3994 clear_pending (EV_A_ (W)w);
2707 if (expect_false (!ev_is_active (w))) 3995 if (expect_false (!ev_is_active (w)))
2708 return; 3996 return;
2709 3997
… …
2727 4015
2728 EV_FREQUENT_CHECK; 4016 EV_FREQUENT_CHECK;
2729} 4017}
2730 4018
2731void noinline 4019void noinline
2732ev_periodic_again (EV_P_ ev_periodic *w) 4020ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2733{ 4021{
2734 /* TODO: use adjustheap and recalculation */ 4022 /* TODO: use adjustheap and recalculation */
2735 ev_periodic_stop (EV_A_ w); 4023 ev_periodic_stop (EV_A_ w);
2736 ev_periodic_start (EV_A_ w); 4024 ev_periodic_start (EV_A_ w);
2737} 4025}
… …
2742#endif 4030#endif
2743 4031
2744#if EV_SIGNAL_ENABLE 4032#if EV_SIGNAL_ENABLE
2745 4033
2746void noinline 4034void noinline
2747ev_signal_start (EV_P_ ev_signal *w) 4035ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2748{ 4036{
2749 if (expect_false (ev_is_active (w))) 4037 if (expect_false (ev_is_active (w)))
2750 return; 4038 return;
2751 4039
2752 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4040 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
… …
2754#if EV_MULTIPLICITY 4042#if EV_MULTIPLICITY
2755 assert (("libev: a signal must not be attached to two different loops", 4043 assert (("libev: a signal must not be attached to two different loops",
2756 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4044 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2757 4045
2758 signals [w->signum - 1].loop = EV_A; 4046 signals [w->signum - 1].loop = EV_A;
4047 ECB_MEMORY_FENCE_RELEASE;
2759#endif 4048#endif
2760 4049
2761 EV_FREQUENT_CHECK; 4050 EV_FREQUENT_CHECK;
2762 4051
2763#if EV_USE_SIGNALFD 4052#if EV_USE_SIGNALFD
… …
2810 sa.sa_handler = ev_sighandler; 4099 sa.sa_handler = ev_sighandler;
2811 sigfillset (&sa.sa_mask); 4100 sigfillset (&sa.sa_mask);
2812 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 4101 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2813 sigaction (w->signum, &sa, 0); 4102 sigaction (w->signum, &sa, 0);
2814 4103
4104 if (origflags & EVFLAG_NOSIGMASK)
4105 {
2815 sigemptyset (&sa.sa_mask); 4106 sigemptyset (&sa.sa_mask);
2816 sigaddset (&sa.sa_mask, w->signum); 4107 sigaddset (&sa.sa_mask, w->signum);
2817 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 4108 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
4109 }
2818#endif 4110#endif
2819 } 4111 }
2820 4112
2821 EV_FREQUENT_CHECK; 4113 EV_FREQUENT_CHECK;
2822} 4114}
2823 4115
2824void noinline 4116void noinline
2825ev_signal_stop (EV_P_ ev_signal *w) 4117ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2826{ 4118{
2827 clear_pending (EV_A_ (W)w); 4119 clear_pending (EV_A_ (W)w);
2828 if (expect_false (!ev_is_active (w))) 4120 if (expect_false (!ev_is_active (w)))
2829 return; 4121 return;
2830 4122
… …
2861#endif 4153#endif
2862 4154
2863#if EV_CHILD_ENABLE 4155#if EV_CHILD_ENABLE
2864 4156
2865void 4157void
2866ev_child_start (EV_P_ ev_child *w) 4158ev_child_start (EV_P_ ev_child *w) EV_THROW
2867{ 4159{
2868#if EV_MULTIPLICITY 4160#if EV_MULTIPLICITY
2869 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4161 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2870#endif 4162#endif
2871 if (expect_false (ev_is_active (w))) 4163 if (expect_false (ev_is_active (w)))
… …
2878 4170
2879 EV_FREQUENT_CHECK; 4171 EV_FREQUENT_CHECK;
2880} 4172}
2881 4173
2882void 4174void
2883ev_child_stop (EV_P_ ev_child *w) 4175ev_child_stop (EV_P_ ev_child *w) EV_THROW
2884{ 4176{
2885 clear_pending (EV_A_ (W)w); 4177 clear_pending (EV_A_ (W)w);
2886 if (expect_false (!ev_is_active (w))) 4178 if (expect_false (!ev_is_active (w)))
2887 return; 4179 return;
2888 4180
… …
2915# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4207# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2916 4208
2917static void noinline 4209static void noinline
2918infy_add (EV_P_ ev_stat *w) 4210infy_add (EV_P_ ev_stat *w)
2919{ 4211{
2920 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); 4212 w->wd = inotify_add_watch (fs_fd, w->path,
4213 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4214 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4215 | IN_DONT_FOLLOW | IN_MASK_ADD);
2921 4216
2922 if (w->wd >= 0) 4217 if (w->wd >= 0)
2923 { 4218 {
2924 struct statfs sfs; 4219 struct statfs sfs;
2925 4220
… …
2929 4224
2930 if (!fs_2625) 4225 if (!fs_2625)
2931 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4226 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2932 else if (!statfs (w->path, &sfs) 4227 else if (!statfs (w->path, &sfs)
2933 && (sfs.f_type == 0x1373 /* devfs */ 4228 && (sfs.f_type == 0x1373 /* devfs */
4229 || sfs.f_type == 0x4006 /* fat */
4230 || sfs.f_type == 0x4d44 /* msdos */
2934 || sfs.f_type == 0xEF53 /* ext2/3 */ 4231 || sfs.f_type == 0xEF53 /* ext2/3 */
4232 || sfs.f_type == 0x72b6 /* jffs2 */
4233 || sfs.f_type == 0x858458f6 /* ramfs */
4234 || sfs.f_type == 0x5346544e /* ntfs */
2935 || sfs.f_type == 0x3153464a /* jfs */ 4235 || sfs.f_type == 0x3153464a /* jfs */
4236 || sfs.f_type == 0x9123683e /* btrfs */
2936 || sfs.f_type == 0x52654973 /* reiser3 */ 4237 || sfs.f_type == 0x52654973 /* reiser3 */
2937 || sfs.f_type == 0x01021994 /* tempfs */ 4238 || sfs.f_type == 0x01021994 /* tmpfs */
2938 || sfs.f_type == 0x58465342 /* xfs */)) 4239 || sfs.f_type == 0x58465342 /* xfs */))
2939 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4240 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
2940 else 4241 else
2941 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4242 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2942 } 4243 }
… …
2963 if (!pend || pend == path) 4264 if (!pend || pend == path)
2964 break; 4265 break;
2965 4266
2966 *pend = 0; 4267 *pend = 0;
2967 w->wd = inotify_add_watch (fs_fd, path, mask); 4268 w->wd = inotify_add_watch (fs_fd, path, mask);
2968 } 4269 }
2969 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 4270 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2970 } 4271 }
2971 } 4272 }
2972 4273
2973 if (w->wd >= 0) 4274 if (w->wd >= 0)
… …
3040 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4341 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3041 ofs += sizeof (struct inotify_event) + ev->len; 4342 ofs += sizeof (struct inotify_event) + ev->len;
3042 } 4343 }
3043} 4344}
3044 4345
3045inline_size unsigned int
3046ev_linux_version (void)
3047{
3048 struct utsname buf;
3049 unsigned int v;
3050 int i;
3051 char *p = buf.release;
3052
3053 if (uname (&buf))
3054 return 0;
3055
3056 for (i = 3+1; --i; )
3057 {
3058 unsigned int c = 0;
3059
3060 for (;;)
3061 {
3062 if (*p >= '0' && *p <= '9')
3063 c = c * 10 + *p++ - '0';
3064 else
3065 {
3066 p += *p == '.';
3067 break;
3068 }
3069 }
3070
3071 v = (v << 8) | c;
3072 }
3073
3074 return v;
3075}
3076
3077inline_size void 4346inline_size void ecb_cold
3078ev_check_2625 (EV_P) 4347ev_check_2625 (EV_P)
3079{ 4348{
3080 /* kernels < 2.6.25 are borked 4349 /* kernels < 2.6.25 are borked
3081 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4350 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3082 */ 4351 */
… …
3087} 4356}
3088 4357
3089inline_size int 4358inline_size int
3090infy_newfd (void) 4359infy_newfd (void)
3091{ 4360{
3092#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4361#if defined IN_CLOEXEC && defined IN_NONBLOCK
3093 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4362 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3094 if (fd >= 0) 4363 if (fd >= 0)
3095 return fd; 4364 return fd;
3096#endif 4365#endif
3097 return inotify_init (); 4366 return inotify_init ();
… …
3172#else 4441#else
3173# define EV_LSTAT(p,b) lstat (p, b) 4442# define EV_LSTAT(p,b) lstat (p, b)
3174#endif 4443#endif
3175 4444
3176void 4445void
3177ev_stat_stat (EV_P_ ev_stat *w) 4446ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
3178{ 4447{
3179 if (lstat (w->path, &w->attr) < 0) 4448 if (lstat (w->path, &w->attr) < 0)
3180 w->attr.st_nlink = 0; 4449 w->attr.st_nlink = 0;
3181 else if (!w->attr.st_nlink) 4450 else if (!w->attr.st_nlink)
3182 w->attr.st_nlink = 1; 4451 w->attr.st_nlink = 1;
… …
3221 ev_feed_event (EV_A_ w, EV_STAT); 4490 ev_feed_event (EV_A_ w, EV_STAT);
3222 } 4491 }
3223} 4492}
3224 4493
3225void 4494void
3226ev_stat_start (EV_P_ ev_stat *w) 4495ev_stat_start (EV_P_ ev_stat *w) EV_THROW
3227{ 4496{
3228 if (expect_false (ev_is_active (w))) 4497 if (expect_false (ev_is_active (w)))
3229 return; 4498 return;
3230 4499
3231 ev_stat_stat (EV_A_ w); 4500 ev_stat_stat (EV_A_ w);
… …
3252 4521
3253 EV_FREQUENT_CHECK; 4522 EV_FREQUENT_CHECK;
3254} 4523}
3255 4524
3256void 4525void
3257ev_stat_stop (EV_P_ ev_stat *w) 4526ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
3258{ 4527{
3259 clear_pending (EV_A_ (W)w); 4528 clear_pending (EV_A_ (W)w);
3260 if (expect_false (!ev_is_active (w))) 4529 if (expect_false (!ev_is_active (w)))
3261 return; 4530 return;
3262 4531
… …
3278} 4547}
3279#endif 4548#endif
3280 4549
3281#if EV_IDLE_ENABLE 4550#if EV_IDLE_ENABLE
3282void 4551void
3283ev_idle_start (EV_P_ ev_idle *w) 4552ev_idle_start (EV_P_ ev_idle *w) EV_THROW
3284{ 4553{
3285 if (expect_false (ev_is_active (w))) 4554 if (expect_false (ev_is_active (w)))
3286 return; 4555 return;
3287 4556
3288 pri_adjust (EV_A_ (W)w); 4557 pri_adjust (EV_A_ (W)w);
… …
3301 4570
3302 EV_FREQUENT_CHECK; 4571 EV_FREQUENT_CHECK;
3303} 4572}
3304 4573
3305void 4574void
3306ev_idle_stop (EV_P_ ev_idle *w) 4575ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
3307{ 4576{
3308 clear_pending (EV_A_ (W)w); 4577 clear_pending (EV_A_ (W)w);
3309 if (expect_false (!ev_is_active (w))) 4578 if (expect_false (!ev_is_active (w)))
3310 return; 4579 return;
3311 4580
… …
3325} 4594}
3326#endif 4595#endif
3327 4596
3328#if EV_PREPARE_ENABLE 4597#if EV_PREPARE_ENABLE
3329void 4598void
3330ev_prepare_start (EV_P_ ev_prepare *w) 4599ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3331{ 4600{
3332 if (expect_false (ev_is_active (w))) 4601 if (expect_false (ev_is_active (w)))
3333 return; 4602 return;
3334 4603
3335 EV_FREQUENT_CHECK; 4604 EV_FREQUENT_CHECK;
… …
3340 4609
3341 EV_FREQUENT_CHECK; 4610 EV_FREQUENT_CHECK;
3342} 4611}
3343 4612
3344void 4613void
3345ev_prepare_stop (EV_P_ ev_prepare *w) 4614ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3346{ 4615{
3347 clear_pending (EV_A_ (W)w); 4616 clear_pending (EV_A_ (W)w);
3348 if (expect_false (!ev_is_active (w))) 4617 if (expect_false (!ev_is_active (w)))
3349 return; 4618 return;
3350 4619
… …
3363} 4632}
3364#endif 4633#endif
3365 4634
3366#if EV_CHECK_ENABLE 4635#if EV_CHECK_ENABLE
3367void 4636void
3368ev_check_start (EV_P_ ev_check *w) 4637ev_check_start (EV_P_ ev_check *w) EV_THROW
3369{ 4638{
3370 if (expect_false (ev_is_active (w))) 4639 if (expect_false (ev_is_active (w)))
3371 return; 4640 return;
3372 4641
3373 EV_FREQUENT_CHECK; 4642 EV_FREQUENT_CHECK;
… …
3378 4647
3379 EV_FREQUENT_CHECK; 4648 EV_FREQUENT_CHECK;
3380} 4649}
3381 4650
3382void 4651void
3383ev_check_stop (EV_P_ ev_check *w) 4652ev_check_stop (EV_P_ ev_check *w) EV_THROW
3384{ 4653{
3385 clear_pending (EV_A_ (W)w); 4654 clear_pending (EV_A_ (W)w);
3386 if (expect_false (!ev_is_active (w))) 4655 if (expect_false (!ev_is_active (w)))
3387 return; 4656 return;
3388 4657
… …
3401} 4670}
3402#endif 4671#endif
3403 4672
3404#if EV_EMBED_ENABLE 4673#if EV_EMBED_ENABLE
3405void noinline 4674void noinline
3406ev_embed_sweep (EV_P_ ev_embed *w) 4675ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3407{ 4676{
3408 ev_loop (w->other, EVLOOP_NONBLOCK); 4677 ev_run (w->other, EVRUN_NOWAIT);
3409} 4678}
3410 4679
3411static void 4680static void
3412embed_io_cb (EV_P_ ev_io *io, int revents) 4681embed_io_cb (EV_P_ ev_io *io, int revents)
3413{ 4682{
3414 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4683 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3415 4684
3416 if (ev_cb (w)) 4685 if (ev_cb (w))
3417 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4686 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3418 else 4687 else
3419 ev_loop (w->other, EVLOOP_NONBLOCK); 4688 ev_run (w->other, EVRUN_NOWAIT);
3420} 4689}
3421 4690
3422static void 4691static void
3423embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4692embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3424{ 4693{
… …
3428 EV_P = w->other; 4697 EV_P = w->other;
3429 4698
3430 while (fdchangecnt) 4699 while (fdchangecnt)
3431 { 4700 {
3432 fd_reify (EV_A); 4701 fd_reify (EV_A);
3433 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4702 ev_run (EV_A_ EVRUN_NOWAIT);
3434 } 4703 }
3435 } 4704 }
3436} 4705}
3437 4706
3438static void 4707static void
… …
3444 4713
3445 { 4714 {
3446 EV_P = w->other; 4715 EV_P = w->other;
3447 4716
3448 ev_loop_fork (EV_A); 4717 ev_loop_fork (EV_A);
3449 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4718 ev_run (EV_A_ EVRUN_NOWAIT);
3450 } 4719 }
3451 4720
3452 ev_embed_start (EV_A_ w); 4721 ev_embed_start (EV_A_ w);
3453} 4722}
3454 4723
… …
3459 ev_idle_stop (EV_A_ idle); 4728 ev_idle_stop (EV_A_ idle);
3460} 4729}
3461#endif 4730#endif
3462 4731
3463void 4732void
3464ev_embed_start (EV_P_ ev_embed *w) 4733ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3465{ 4734{
3466 if (expect_false (ev_is_active (w))) 4735 if (expect_false (ev_is_active (w)))
3467 return; 4736 return;
3468 4737
3469 { 4738 {
… …
3490 4759
3491 EV_FREQUENT_CHECK; 4760 EV_FREQUENT_CHECK;
3492} 4761}
3493 4762
3494void 4763void
3495ev_embed_stop (EV_P_ ev_embed *w) 4764ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3496{ 4765{
3497 clear_pending (EV_A_ (W)w); 4766 clear_pending (EV_A_ (W)w);
3498 if (expect_false (!ev_is_active (w))) 4767 if (expect_false (!ev_is_active (w)))
3499 return; 4768 return;
3500 4769
… …
3510} 4779}
3511#endif 4780#endif
3512 4781
3513#if EV_FORK_ENABLE 4782#if EV_FORK_ENABLE
3514void 4783void
3515ev_fork_start (EV_P_ ev_fork *w) 4784ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3516{ 4785{
3517 if (expect_false (ev_is_active (w))) 4786 if (expect_false (ev_is_active (w)))
3518 return; 4787 return;
3519 4788
3520 EV_FREQUENT_CHECK; 4789 EV_FREQUENT_CHECK;
… …
3525 4794
3526 EV_FREQUENT_CHECK; 4795 EV_FREQUENT_CHECK;
3527} 4796}
3528 4797
3529void 4798void
3530ev_fork_stop (EV_P_ ev_fork *w) 4799ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3531{ 4800{
3532 clear_pending (EV_A_ (W)w); 4801 clear_pending (EV_A_ (W)w);
3533 if (expect_false (!ev_is_active (w))) 4802 if (expect_false (!ev_is_active (w)))
3534 return; 4803 return;
3535 4804
… …
3546 4815
3547 EV_FREQUENT_CHECK; 4816 EV_FREQUENT_CHECK;
3548} 4817}
3549#endif 4818#endif
3550 4819
4820#if EV_CLEANUP_ENABLE
4821void
4822ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
4823{
4824 if (expect_false (ev_is_active (w)))
4825 return;
4826
4827 EV_FREQUENT_CHECK;
4828
4829 ev_start (EV_A_ (W)w, ++cleanupcnt);
4830 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4831 cleanups [cleanupcnt - 1] = w;
4832
4833 /* cleanup watchers should never keep a refcount on the loop */
4834 ev_unref (EV_A);
4835 EV_FREQUENT_CHECK;
4836}
4837
4838void
4839ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4840{
4841 clear_pending (EV_A_ (W)w);
4842 if (expect_false (!ev_is_active (w)))
4843 return;
4844
4845 EV_FREQUENT_CHECK;
4846 ev_ref (EV_A);
4847
4848 {
4849 int active = ev_active (w);
4850
4851 cleanups [active - 1] = cleanups [--cleanupcnt];
4852 ev_active (cleanups [active - 1]) = active;
4853 }
4854
4855 ev_stop (EV_A_ (W)w);
4856
4857 EV_FREQUENT_CHECK;
4858}
4859#endif
4860
3551#if EV_ASYNC_ENABLE 4861#if EV_ASYNC_ENABLE
3552void 4862void
3553ev_async_start (EV_P_ ev_async *w) 4863ev_async_start (EV_P_ ev_async *w) EV_THROW
3554{ 4864{
3555 if (expect_false (ev_is_active (w))) 4865 if (expect_false (ev_is_active (w)))
3556 return; 4866 return;
4867
4868 w->sent = 0;
3557 4869
3558 evpipe_init (EV_A); 4870 evpipe_init (EV_A);
3559 4871
3560 EV_FREQUENT_CHECK; 4872 EV_FREQUENT_CHECK;
3561 4873
… …
3565 4877
3566 EV_FREQUENT_CHECK; 4878 EV_FREQUENT_CHECK;
3567} 4879}
3568 4880
3569void 4881void
3570ev_async_stop (EV_P_ ev_async *w) 4882ev_async_stop (EV_P_ ev_async *w) EV_THROW
3571{ 4883{
3572 clear_pending (EV_A_ (W)w); 4884 clear_pending (EV_A_ (W)w);
3573 if (expect_false (!ev_is_active (w))) 4885 if (expect_false (!ev_is_active (w)))
3574 return; 4886 return;
3575 4887
… …
3586 4898
3587 EV_FREQUENT_CHECK; 4899 EV_FREQUENT_CHECK;
3588} 4900}
3589 4901
3590void 4902void
3591ev_async_send (EV_P_ ev_async *w) 4903ev_async_send (EV_P_ ev_async *w) EV_THROW
3592{ 4904{
3593 w->sent = 1; 4905 w->sent = 1;
3594 evpipe_write (EV_A_ &async_pending); 4906 evpipe_write (EV_A_ &async_pending);
3595} 4907}
3596#endif 4908#endif
… …
3633 4945
3634 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4946 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3635} 4947}
3636 4948
3637void 4949void
3638ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4950ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3639{ 4951{
3640 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4952 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3641 4953
3642 if (expect_false (!once)) 4954 if (expect_false (!once))
3643 { 4955 {
… …
3664} 4976}
3665 4977
3666/*****************************************************************************/ 4978/*****************************************************************************/
3667 4979
3668#if EV_WALK_ENABLE 4980#if EV_WALK_ENABLE
3669void 4981void ecb_cold
3670ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4982ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
3671{ 4983{
3672 int i, j; 4984 int i, j;
3673 ev_watcher_list *wl, *wn; 4985 ev_watcher_list *wl, *wn;
3674 4986
3675 if (types & (EV_IO | EV_EMBED)) 4987 if (types & (EV_IO | EV_EMBED))
… …
3718 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 5030 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3719#endif 5031#endif
3720 5032
3721#if EV_IDLE_ENABLE 5033#if EV_IDLE_ENABLE
3722 if (types & EV_IDLE) 5034 if (types & EV_IDLE)
3723 for (j = NUMPRI; i--; ) 5035 for (j = NUMPRI; j--; )
3724 for (i = idlecnt [j]; i--; ) 5036 for (i = idlecnt [j]; i--; )
3725 cb (EV_A_ EV_IDLE, idles [j][i]); 5037 cb (EV_A_ EV_IDLE, idles [j][i]);
3726#endif 5038#endif
3727 5039
3728#if EV_FORK_ENABLE 5040#if EV_FORK_ENABLE
… …
3781 5093
3782#if EV_MULTIPLICITY 5094#if EV_MULTIPLICITY
3783 #include "ev_wrap.h" 5095 #include "ev_wrap.h"
3784#endif 5096#endif
3785 5097
3786#ifdef __cplusplus
3787}
3788#endif
3789

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