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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 1.477 by root, Sun Aug 9 00:13:28 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
… …
171 181
172#ifdef EV_H 182#ifdef EV_H
173# include EV_H 183# include EV_H
174#else 184#else
175# include "ev.h" 185# include "ev.h"
186#endif
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
176#endif 197#endif
177 198
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 0x00010004
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__
459# define expect(expr,value) __builtin_expect ((expr),(value)) 547 typedef signed long long int64_t;
460# define noinline __attribute__ ((noinline)) 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
461#else 562#else
462# define expect(expr,value) (expr) 563 #include <inttypes.h>
463# define noinline 564 #if UINTMAX_MAX > 0xffffffffU
464# if __STDC_VERSION__ < 199901L && __GNUC__ < 2 565 #define ECB_PTRSIZE 8
465# define inline 566 #else
567 #define ECB_PTRSIZE 4
568 #endif
466# 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
467#endif 580 #endif
581#endif
468 582
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#ifndef ECB_MEMORY_FENCE
653 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
654 #if __i386 || __i386__
655 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
656 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
657 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
658 #elif ECB_GCC_AMD64
659 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
660 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
661 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
662 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
663 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
664 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
665 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
666 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
667 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
668 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
669 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
670 #elif __aarch64__
671 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
672 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
673 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
674 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
675 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
676 #elif defined __s390__ || defined __s390x__
677 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
678 #elif defined __mips__
679 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
680 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
681 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
682 #elif defined __alpha__
683 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
684 #elif defined __hppa__
685 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
686 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
687 #elif defined __ia64__
688 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
689 #elif defined __m68k__
690 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
691 #elif defined __m88k__
692 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
693 #elif defined __sh__
694 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
695 #endif
696 #endif
697#endif
698
699#ifndef ECB_MEMORY_FENCE
700 #if ECB_GCC_VERSION(4,7)
701 /* see comment below (stdatomic.h) about the C11 memory model. */
702 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
703 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
704 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
705
706 #elif ECB_CLANG_EXTENSION(c_atomic)
707 /* see comment below (stdatomic.h) about the C11 memory model. */
708 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
709 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
710 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
711
712 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
713 #define ECB_MEMORY_FENCE __sync_synchronize ()
714 #elif _MSC_VER >= 1500 /* VC++ 2008 */
715 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
716 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
717 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
718 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
719 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
720 #elif _MSC_VER >= 1400 /* VC++ 2005 */
721 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
722 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
723 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
724 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
725 #elif defined _WIN32
726 #include <WinNT.h>
727 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
728 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
729 #include <mbarrier.h>
730 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
731 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
732 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
733 #elif __xlC__
734 #define ECB_MEMORY_FENCE __sync ()
735 #endif
736#endif
737
738#ifndef ECB_MEMORY_FENCE
739 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
740 /* we assume that these memory fences work on all variables/all memory accesses, */
741 /* not just C11 atomics and atomic accesses */
742 #include <stdatomic.h>
743 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
744 /* any fence other than seq_cst, which isn't very efficient for us. */
745 /* Why that is, we don't know - either the C11 memory model is quite useless */
746 /* for most usages, or gcc and clang have a bug */
747 /* I *currently* lean towards the latter, and inefficiently implement */
748 /* all three of ecb's fences as a seq_cst fence */
749 /* Update, gcc-4.8 generates mfence for all c++ fences, but nothing */
750 /* for all __atomic_thread_fence's except seq_cst */
751 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
752 #endif
753#endif
754
755#ifndef ECB_MEMORY_FENCE
756 #if !ECB_AVOID_PTHREADS
757 /*
758 * if you get undefined symbol references to pthread_mutex_lock,
759 * or failure to find pthread.h, then you should implement
760 * the ECB_MEMORY_FENCE operations for your cpu/compiler
761 * OR provide pthread.h and link against the posix thread library
762 * of your system.
763 */
764 #include <pthread.h>
765 #define ECB_NEEDS_PTHREADS 1
766 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
767
768 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
769 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
770 #endif
771#endif
772
773#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
774 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
775#endif
776
777#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
778 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
779#endif
780
781/*****************************************************************************/
782
783#if ECB_CPP
784 #define ecb_inline static inline
785#elif ECB_GCC_VERSION(2,5)
786 #define ecb_inline static __inline__
787#elif ECB_C99
788 #define ecb_inline static inline
789#else
790 #define ecb_inline static
791#endif
792
793#if ECB_GCC_VERSION(3,3)
794 #define ecb_restrict __restrict__
795#elif ECB_C99
796 #define ecb_restrict restrict
797#else
798 #define ecb_restrict
799#endif
800
801typedef int ecb_bool;
802
803#define ECB_CONCAT_(a, b) a ## b
804#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
805#define ECB_STRINGIFY_(a) # a
806#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
807#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
808
809#define ecb_function_ ecb_inline
810
811#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
812 #define ecb_attribute(attrlist) __attribute__ (attrlist)
813#else
814 #define ecb_attribute(attrlist)
815#endif
816
817#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
818 #define ecb_is_constant(expr) __builtin_constant_p (expr)
819#else
820 /* possible C11 impl for integral types
821 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
822 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
823
824 #define ecb_is_constant(expr) 0
825#endif
826
827#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
828 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
829#else
830 #define ecb_expect(expr,value) (expr)
831#endif
832
833#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
834 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
835#else
836 #define ecb_prefetch(addr,rw,locality)
837#endif
838
839/* no emulation for ecb_decltype */
840#if ECB_CPP11
841 // older implementations might have problems with decltype(x)::type, work around it
842 template<class T> struct ecb_decltype_t { typedef T type; };
843 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
844#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
845 #define ecb_decltype(x) __typeof__ (x)
846#endif
847
848#if _MSC_VER >= 1300
849 #define ecb_deprecated __declspec (deprecated)
850#else
851 #define ecb_deprecated ecb_attribute ((__deprecated__))
852#endif
853
854#if _MSC_VER >= 1500
855 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
856#elif ECB_GCC_VERSION(4,5)
857 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
858#else
859 #define ecb_deprecated_message(msg) ecb_deprecated
860#endif
861
862#if _MSC_VER >= 1400
863 #define ecb_noinline __declspec (noinline)
864#else
865 #define ecb_noinline ecb_attribute ((__noinline__))
866#endif
867
868#define ecb_unused ecb_attribute ((__unused__))
869#define ecb_const ecb_attribute ((__const__))
870#define ecb_pure ecb_attribute ((__pure__))
871
872#if ECB_C11 || __IBMC_NORETURN
873 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
874 #define ecb_noreturn _Noreturn
875#elif ECB_CPP11
876 #define ecb_noreturn [[noreturn]]
877#elif _MSC_VER >= 1200
878 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
879 #define ecb_noreturn __declspec (noreturn)
880#else
881 #define ecb_noreturn ecb_attribute ((__noreturn__))
882#endif
883
884#if ECB_GCC_VERSION(4,3)
885 #define ecb_artificial ecb_attribute ((__artificial__))
886 #define ecb_hot ecb_attribute ((__hot__))
887 #define ecb_cold ecb_attribute ((__cold__))
888#else
889 #define ecb_artificial
890 #define ecb_hot
891 #define ecb_cold
892#endif
893
894/* put around conditional expressions if you are very sure that the */
895/* expression is mostly true or mostly false. note that these return */
896/* booleans, not the expression. */
469#define expect_false(expr) expect ((expr) != 0, 0) 897#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
470#define expect_true(expr) expect ((expr) != 0, 1) 898#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
899/* for compatibility to the rest of the world */
900#define ecb_likely(expr) ecb_expect_true (expr)
901#define ecb_unlikely(expr) ecb_expect_false (expr)
902
903/* count trailing zero bits and count # of one bits */
904#if ECB_GCC_VERSION(3,4) \
905 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
906 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
907 && ECB_CLANG_BUILTIN(__builtin_popcount))
908 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
909 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
910 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
911 #define ecb_ctz32(x) __builtin_ctz (x)
912 #define ecb_ctz64(x) __builtin_ctzll (x)
913 #define ecb_popcount32(x) __builtin_popcount (x)
914 /* no popcountll */
915#else
916 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
917 ecb_function_ ecb_const int
918 ecb_ctz32 (uint32_t x)
919 {
920 int r = 0;
921
922 x &= ~x + 1; /* this isolates the lowest bit */
923
924#if ECB_branchless_on_i386
925 r += !!(x & 0xaaaaaaaa) << 0;
926 r += !!(x & 0xcccccccc) << 1;
927 r += !!(x & 0xf0f0f0f0) << 2;
928 r += !!(x & 0xff00ff00) << 3;
929 r += !!(x & 0xffff0000) << 4;
930#else
931 if (x & 0xaaaaaaaa) r += 1;
932 if (x & 0xcccccccc) r += 2;
933 if (x & 0xf0f0f0f0) r += 4;
934 if (x & 0xff00ff00) r += 8;
935 if (x & 0xffff0000) r += 16;
936#endif
937
938 return r;
939 }
940
941 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
942 ecb_function_ ecb_const int
943 ecb_ctz64 (uint64_t x)
944 {
945 int shift = x & 0xffffffffU ? 0 : 32;
946 return ecb_ctz32 (x >> shift) + shift;
947 }
948
949 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
950 ecb_function_ ecb_const int
951 ecb_popcount32 (uint32_t x)
952 {
953 x -= (x >> 1) & 0x55555555;
954 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
955 x = ((x >> 4) + x) & 0x0f0f0f0f;
956 x *= 0x01010101;
957
958 return x >> 24;
959 }
960
961 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
962 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
963 {
964 int r = 0;
965
966 if (x >> 16) { x >>= 16; r += 16; }
967 if (x >> 8) { x >>= 8; r += 8; }
968 if (x >> 4) { x >>= 4; r += 4; }
969 if (x >> 2) { x >>= 2; r += 2; }
970 if (x >> 1) { r += 1; }
971
972 return r;
973 }
974
975 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
976 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
977 {
978 int r = 0;
979
980 if (x >> 32) { x >>= 32; r += 32; }
981
982 return r + ecb_ld32 (x);
983 }
984#endif
985
986ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
987ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
988ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
989ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
990
991ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
992ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
993{
994 return ( (x * 0x0802U & 0x22110U)
995 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
996}
997
998ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
999ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
1000{
1001 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
1002 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
1003 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
1004 x = ( x >> 8 ) | ( x << 8);
1005
1006 return x;
1007}
1008
1009ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
1010ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
1011{
1012 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
1013 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
1014 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
1015 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
1016 x = ( x >> 16 ) | ( x << 16);
1017
1018 return x;
1019}
1020
1021/* popcount64 is only available on 64 bit cpus as gcc builtin */
1022/* so for this version we are lazy */
1023ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
1024ecb_function_ ecb_const int
1025ecb_popcount64 (uint64_t x)
1026{
1027 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
1028}
1029
1030ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
1031ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
1032ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
1033ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
1034ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
1035ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
1036ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
1037ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
1038
1039ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
1040ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
1041ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
1042ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
1043ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
1044ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
1045ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
1046ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
1047
1048#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1049 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1050 #define ecb_bswap16(x) __builtin_bswap16 (x)
1051 #else
1052 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1053 #endif
1054 #define ecb_bswap32(x) __builtin_bswap32 (x)
1055 #define ecb_bswap64(x) __builtin_bswap64 (x)
1056#elif _MSC_VER
1057 #include <stdlib.h>
1058 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1059 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1060 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
1061#else
1062 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
1063 ecb_function_ ecb_const uint16_t
1064 ecb_bswap16 (uint16_t x)
1065 {
1066 return ecb_rotl16 (x, 8);
1067 }
1068
1069 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
1070 ecb_function_ ecb_const uint32_t
1071 ecb_bswap32 (uint32_t x)
1072 {
1073 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
1074 }
1075
1076 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
1077 ecb_function_ ecb_const uint64_t
1078 ecb_bswap64 (uint64_t x)
1079 {
1080 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
1081 }
1082#endif
1083
1084#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
1085 #define ecb_unreachable() __builtin_unreachable ()
1086#else
1087 /* this seems to work fine, but gcc always emits a warning for it :/ */
1088 ecb_inline ecb_noreturn void ecb_unreachable (void);
1089 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
1090#endif
1091
1092/* try to tell the compiler that some condition is definitely true */
1093#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
1094
1095ecb_inline ecb_const unsigned char ecb_byteorder_helper (void);
1096ecb_inline ecb_const unsigned char
1097ecb_byteorder_helper (void)
1098{
1099 /* the union code still generates code under pressure in gcc, */
1100 /* but less than using pointers, and always seems to */
1101 /* successfully return a constant. */
1102 /* the reason why we have this horrible preprocessor mess */
1103 /* is to avoid it in all cases, at least on common architectures */
1104 /* or when using a recent enough gcc version (>= 4.6) */
1105#if ((__i386 || __i386__) && !__VOS__) || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64
1106 return 0x44;
1107#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
1108 return 0x44;
1109#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
1110 return 0x11;
1111#else
1112 union
1113 {
1114 uint32_t i;
1115 uint8_t c;
1116 } u = { 0x11223344 };
1117 return u.c;
1118#endif
1119}
1120
1121ecb_inline ecb_const ecb_bool ecb_big_endian (void);
1122ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
1123ecb_inline ecb_const ecb_bool ecb_little_endian (void);
1124ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
1125
1126#if ECB_GCC_VERSION(3,0) || ECB_C99
1127 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1128#else
1129 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1130#endif
1131
1132#if ECB_CPP
1133 template<typename T>
1134 static inline T ecb_div_rd (T val, T div)
1135 {
1136 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1137 }
1138 template<typename T>
1139 static inline T ecb_div_ru (T val, T div)
1140 {
1141 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1142 }
1143#else
1144 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1145 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1146#endif
1147
1148#if ecb_cplusplus_does_not_suck
1149 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1150 template<typename T, int N>
1151 static inline int ecb_array_length (const T (&arr)[N])
1152 {
1153 return N;
1154 }
1155#else
1156 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1157#endif
1158
1159/*******************************************************************************/
1160/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1161
1162/* basically, everything uses "ieee pure-endian" floating point numbers */
1163/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1164#if 0 \
1165 || __i386 || __i386__ \
1166 || ECB_GCC_AMD64 \
1167 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1168 || defined __s390__ || defined __s390x__ \
1169 || defined __mips__ \
1170 || defined __alpha__ \
1171 || defined __hppa__ \
1172 || defined __ia64__ \
1173 || defined __m68k__ \
1174 || defined __m88k__ \
1175 || defined __sh__ \
1176 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1177 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1178 || defined __aarch64__
1179 #define ECB_STDFP 1
1180 #include <string.h> /* for memcpy */
1181#else
1182 #define ECB_STDFP 0
1183#endif
1184
1185#ifndef ECB_NO_LIBM
1186
1187 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1188
1189 /* only the oldest of old doesn't have this one. solaris. */
1190 #ifdef INFINITY
1191 #define ECB_INFINITY INFINITY
1192 #else
1193 #define ECB_INFINITY HUGE_VAL
1194 #endif
1195
1196 #ifdef NAN
1197 #define ECB_NAN NAN
1198 #else
1199 #define ECB_NAN ECB_INFINITY
1200 #endif
1201
1202 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1203 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1204 #define ecb_frexpf(x,e) frexpf ((x), (e))
1205 #else
1206 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1207 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1208 #endif
1209
1210 /* converts an ieee half/binary16 to a float */
1211 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1212 ecb_function_ ecb_const float
1213 ecb_binary16_to_float (uint16_t x)
1214 {
1215 int e = (x >> 10) & 0x1f;
1216 int m = x & 0x3ff;
1217 float r;
1218
1219 if (!e ) r = ecb_ldexpf (m , -24);
1220 else if (e != 31) r = ecb_ldexpf (m + 0x400, e - 25);
1221 else if (m ) r = ECB_NAN;
1222 else r = ECB_INFINITY;
1223
1224 return x & 0x8000 ? -r : r;
1225 }
1226
1227 /* convert a float to ieee single/binary32 */
1228 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1229 ecb_function_ ecb_const uint32_t
1230 ecb_float_to_binary32 (float x)
1231 {
1232 uint32_t r;
1233
1234 #if ECB_STDFP
1235 memcpy (&r, &x, 4);
1236 #else
1237 /* slow emulation, works for anything but -0 */
1238 uint32_t m;
1239 int e;
1240
1241 if (x == 0e0f ) return 0x00000000U;
1242 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1243 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1244 if (x != x ) return 0x7fbfffffU;
1245
1246 m = ecb_frexpf (x, &e) * 0x1000000U;
1247
1248 r = m & 0x80000000U;
1249
1250 if (r)
1251 m = -m;
1252
1253 if (e <= -126)
1254 {
1255 m &= 0xffffffU;
1256 m >>= (-125 - e);
1257 e = -126;
1258 }
1259
1260 r |= (e + 126) << 23;
1261 r |= m & 0x7fffffU;
1262 #endif
1263
1264 return r;
1265 }
1266
1267 /* converts an ieee single/binary32 to a float */
1268 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1269 ecb_function_ ecb_const float
1270 ecb_binary32_to_float (uint32_t x)
1271 {
1272 float r;
1273
1274 #if ECB_STDFP
1275 memcpy (&r, &x, 4);
1276 #else
1277 /* emulation, only works for normals and subnormals and +0 */
1278 int neg = x >> 31;
1279 int e = (x >> 23) & 0xffU;
1280
1281 x &= 0x7fffffU;
1282
1283 if (e)
1284 x |= 0x800000U;
1285 else
1286 e = 1;
1287
1288 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1289 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1290
1291 r = neg ? -r : r;
1292 #endif
1293
1294 return r;
1295 }
1296
1297 /* convert a double to ieee double/binary64 */
1298 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1299 ecb_function_ ecb_const uint64_t
1300 ecb_double_to_binary64 (double x)
1301 {
1302 uint64_t r;
1303
1304 #if ECB_STDFP
1305 memcpy (&r, &x, 8);
1306 #else
1307 /* slow emulation, works for anything but -0 */
1308 uint64_t m;
1309 int e;
1310
1311 if (x == 0e0 ) return 0x0000000000000000U;
1312 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1313 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1314 if (x != x ) return 0X7ff7ffffffffffffU;
1315
1316 m = frexp (x, &e) * 0x20000000000000U;
1317
1318 r = m & 0x8000000000000000;;
1319
1320 if (r)
1321 m = -m;
1322
1323 if (e <= -1022)
1324 {
1325 m &= 0x1fffffffffffffU;
1326 m >>= (-1021 - e);
1327 e = -1022;
1328 }
1329
1330 r |= ((uint64_t)(e + 1022)) << 52;
1331 r |= m & 0xfffffffffffffU;
1332 #endif
1333
1334 return r;
1335 }
1336
1337 /* converts an ieee double/binary64 to a double */
1338 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1339 ecb_function_ ecb_const double
1340 ecb_binary64_to_double (uint64_t x)
1341 {
1342 double r;
1343
1344 #if ECB_STDFP
1345 memcpy (&r, &x, 8);
1346 #else
1347 /* emulation, only works for normals and subnormals and +0 */
1348 int neg = x >> 63;
1349 int e = (x >> 52) & 0x7ffU;
1350
1351 x &= 0xfffffffffffffU;
1352
1353 if (e)
1354 x |= 0x10000000000000U;
1355 else
1356 e = 1;
1357
1358 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1359 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1360
1361 r = neg ? -r : r;
1362 #endif
1363
1364 return r;
1365 }
1366
1367#endif
1368
1369#endif
1370
1371/* ECB.H END */
1372
1373#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1374/* if your architecture doesn't need memory fences, e.g. because it is
1375 * single-cpu/core, or if you use libev in a project that doesn't use libev
1376 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
1377 * libev, in which cases the memory fences become nops.
1378 * alternatively, you can remove this #error and link against libpthread,
1379 * which will then provide the memory fences.
1380 */
1381# error "memory fences not defined for your architecture, please report"
1382#endif
1383
1384#ifndef ECB_MEMORY_FENCE
1385# define ECB_MEMORY_FENCE do { } while (0)
1386# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1387# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1388#endif
1389
1390#define expect_false(cond) ecb_expect_false (cond)
1391#define expect_true(cond) ecb_expect_true (cond)
1392#define noinline ecb_noinline
1393
471#define inline_size static inline 1394#define inline_size ecb_inline
472 1395
473#if EV_FEATURE_CODE 1396#if EV_FEATURE_CODE
474# define inline_speed static inline 1397# define inline_speed ecb_inline
475#else 1398#else
476# define inline_speed static noinline 1399# define inline_speed static noinline
477#endif 1400#endif
478 1401
479#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1402#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
… …
494#define ev_active(w) ((W)(w))->active 1417#define ev_active(w) ((W)(w))->active
495#define ev_at(w) ((WT)(w))->at 1418#define ev_at(w) ((WT)(w))->at
496 1419
497#if EV_USE_REALTIME 1420#if EV_USE_REALTIME
498/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 1421/* 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 */ 1422/* giving it a reasonably high chance of working on typical architectures */
500static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 1423static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
501#endif 1424#endif
502 1425
503#if EV_USE_MONOTONIC 1426#if EV_USE_MONOTONIC
504static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 1427static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
… …
518# include "ev_win32.c" 1441# include "ev_win32.c"
519#endif 1442#endif
520 1443
521/*****************************************************************************/ 1444/*****************************************************************************/
522 1445
1446/* define a suitable floor function (only used by periodics atm) */
1447
1448#if EV_USE_FLOOR
1449# include <math.h>
1450# define ev_floor(v) floor (v)
1451#else
1452
1453#include <float.h>
1454
1455/* a floor() replacement function, should be independent of ev_tstamp type */
1456static ev_tstamp noinline
1457ev_floor (ev_tstamp v)
1458{
1459 /* the choice of shift factor is not terribly important */
1460#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1461 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1462#else
1463 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1464#endif
1465
1466 /* argument too large for an unsigned long? */
1467 if (expect_false (v >= shift))
1468 {
1469 ev_tstamp f;
1470
1471 if (v == v - 1.)
1472 return v; /* very large number */
1473
1474 f = shift * ev_floor (v * (1. / shift));
1475 return f + ev_floor (v - f);
1476 }
1477
1478 /* special treatment for negative args? */
1479 if (expect_false (v < 0.))
1480 {
1481 ev_tstamp f = -ev_floor (-v);
1482
1483 return f - (f == v ? 0 : 1);
1484 }
1485
1486 /* fits into an unsigned long */
1487 return (unsigned long)v;
1488}
1489
1490#endif
1491
1492/*****************************************************************************/
1493
1494#ifdef __linux
1495# include <sys/utsname.h>
1496#endif
1497
1498static unsigned int noinline ecb_cold
1499ev_linux_version (void)
1500{
1501#ifdef __linux
1502 unsigned int v = 0;
1503 struct utsname buf;
1504 int i;
1505 char *p = buf.release;
1506
1507 if (uname (&buf))
1508 return 0;
1509
1510 for (i = 3+1; --i; )
1511 {
1512 unsigned int c = 0;
1513
1514 for (;;)
1515 {
1516 if (*p >= '0' && *p <= '9')
1517 c = c * 10 + *p++ - '0';
1518 else
1519 {
1520 p += *p == '.';
1521 break;
1522 }
1523 }
1524
1525 v = (v << 8) | c;
1526 }
1527
1528 return v;
1529#else
1530 return 0;
1531#endif
1532}
1533
1534/*****************************************************************************/
1535
523#if EV_AVOID_STDIO 1536#if EV_AVOID_STDIO
524static void noinline 1537static void noinline ecb_cold
525ev_printerr (const char *msg) 1538ev_printerr (const char *msg)
526{ 1539{
527 write (STDERR_FILENO, msg, strlen (msg)); 1540 write (STDERR_FILENO, msg, strlen (msg));
528} 1541}
529#endif 1542#endif
530 1543
531static void (*syserr_cb)(const char *msg); 1544static void (*syserr_cb)(const char *msg) EV_THROW;
532 1545
533void 1546void ecb_cold
534ev_set_syserr_cb (void (*cb)(const char *msg)) 1547ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
535{ 1548{
536 syserr_cb = cb; 1549 syserr_cb = cb;
537} 1550}
538 1551
539static void noinline 1552static void noinline ecb_cold
540ev_syserr (const char *msg) 1553ev_syserr (const char *msg)
541{ 1554{
542 if (!msg) 1555 if (!msg)
543 msg = "(libev) system error"; 1556 msg = "(libev) system error";
544 1557
545 if (syserr_cb) 1558 if (syserr_cb)
546 syserr_cb (msg); 1559 syserr_cb (msg);
547 else 1560 else
548 { 1561 {
549#if EV_AVOID_STDIO 1562#if EV_AVOID_STDIO
550 const char *err = strerror (errno);
551
552 ev_printerr (msg); 1563 ev_printerr (msg);
553 ev_printerr (": "); 1564 ev_printerr (": ");
554 ev_printerr (err); 1565 ev_printerr (strerror (errno));
555 ev_printerr ("\n"); 1566 ev_printerr ("\n");
556#else 1567#else
557 perror (msg); 1568 perror (msg);
558#endif 1569#endif
559 abort (); 1570 abort ();
560 } 1571 }
561} 1572}
562 1573
563static void * 1574static void *
564ev_realloc_emul (void *ptr, long size) 1575ev_realloc_emul (void *ptr, long size) EV_THROW
565{ 1576{
566#if __GLIBC__
567 return realloc (ptr, size);
568#else
569 /* some systems, notably openbsd and darwin, fail to properly 1577 /* some systems, notably openbsd and darwin, fail to properly
570 * implement realloc (x, 0) (as required by both ansi c-89 and 1578 * implement realloc (x, 0) (as required by both ansi c-89 and
571 * the single unix specification, so work around them here. 1579 * the single unix specification, so work around them here.
1580 * recently, also (at least) fedora and debian started breaking it,
1581 * despite documenting it otherwise.
572 */ 1582 */
573 1583
574 if (size) 1584 if (size)
575 return realloc (ptr, size); 1585 return realloc (ptr, size);
576 1586
577 free (ptr); 1587 free (ptr);
578 return 0; 1588 return 0;
579#endif
580} 1589}
581 1590
582static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1591static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
583 1592
584void 1593void ecb_cold
585ev_set_allocator (void *(*cb)(void *ptr, long size)) 1594ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
586{ 1595{
587 alloc = cb; 1596 alloc = cb;
588} 1597}
589 1598
590inline_speed void * 1599inline_speed void *
… …
593 ptr = alloc (ptr, size); 1602 ptr = alloc (ptr, size);
594 1603
595 if (!ptr && size) 1604 if (!ptr && size)
596 { 1605 {
597#if EV_AVOID_STDIO 1606#if EV_AVOID_STDIO
598 ev_printerr ("libev: memory allocation failed, aborting.\n"); 1607 ev_printerr ("(libev) memory allocation failed, aborting.\n");
599#else 1608#else
600 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1609 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
601#endif 1610#endif
602 abort (); 1611 abort ();
603 } 1612 }
604 1613
605 return ptr; 1614 return ptr;
… …
622 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1631 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
623 unsigned char unused; 1632 unsigned char unused;
624#if EV_USE_EPOLL 1633#if EV_USE_EPOLL
625 unsigned int egen; /* generation counter to counter epoll bugs */ 1634 unsigned int egen; /* generation counter to counter epoll bugs */
626#endif 1635#endif
627#if EV_SELECT_IS_WINSOCKET 1636#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
628 SOCKET handle; 1637 SOCKET handle;
1638#endif
1639#if EV_USE_IOCP
1640 OVERLAPPED or, ow;
629#endif 1641#endif
630} ANFD; 1642} ANFD;
631 1643
632/* stores the pending event set for a given watcher */ 1644/* stores the pending event set for a given watcher */
633typedef struct 1645typedef struct
… …
675 #undef VAR 1687 #undef VAR
676 }; 1688 };
677 #include "ev_wrap.h" 1689 #include "ev_wrap.h"
678 1690
679 static struct ev_loop default_loop_struct; 1691 static struct ev_loop default_loop_struct;
680 struct ev_loop *ev_default_loop_ptr; 1692 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
681 1693
682#else 1694#else
683 1695
684 ev_tstamp ev_rt_now; 1696 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; 1697 #define VAR(name,decl) static decl;
686 #include "ev_vars.h" 1698 #include "ev_vars.h"
687 #undef VAR 1699 #undef VAR
688 1700
689 static int ev_default_loop_ptr; 1701 static int ev_default_loop_ptr;
… …
698# define EV_RELEASE_CB (void)0 1710# define EV_RELEASE_CB (void)0
699# define EV_ACQUIRE_CB (void)0 1711# define EV_ACQUIRE_CB (void)0
700# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1712# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
701#endif 1713#endif
702 1714
703#define EVUNLOOP_RECURSE 0x80 1715#define EVBREAK_RECURSE 0x80
704 1716
705/*****************************************************************************/ 1717/*****************************************************************************/
706 1718
707#ifndef EV_HAVE_EV_TIME 1719#ifndef EV_HAVE_EV_TIME
708ev_tstamp 1720ev_tstamp
709ev_time (void) 1721ev_time (void) EV_THROW
710{ 1722{
711#if EV_USE_REALTIME 1723#if EV_USE_REALTIME
712 if (expect_true (have_realtime)) 1724 if (expect_true (have_realtime))
713 { 1725 {
714 struct timespec ts; 1726 struct timespec ts;
… …
738 return ev_time (); 1750 return ev_time ();
739} 1751}
740 1752
741#if EV_MULTIPLICITY 1753#if EV_MULTIPLICITY
742ev_tstamp 1754ev_tstamp
743ev_now (EV_P) 1755ev_now (EV_P) EV_THROW
744{ 1756{
745 return ev_rt_now; 1757 return ev_rt_now;
746} 1758}
747#endif 1759#endif
748 1760
749void 1761void
750ev_sleep (ev_tstamp delay) 1762ev_sleep (ev_tstamp delay) EV_THROW
751{ 1763{
752 if (delay > 0.) 1764 if (delay > 0.)
753 { 1765 {
754#if EV_USE_NANOSLEEP 1766#if EV_USE_NANOSLEEP
755 struct timespec ts; 1767 struct timespec ts;
756 1768
757 ts.tv_sec = (time_t)delay; 1769 EV_TS_SET (ts, delay);
758 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
759
760 nanosleep (&ts, 0); 1770 nanosleep (&ts, 0);
761#elif defined(_WIN32) 1771#elif defined _WIN32
762 Sleep ((unsigned long)(delay * 1e3)); 1772 Sleep ((unsigned long)(delay * 1e3));
763#else 1773#else
764 struct timeval tv; 1774 struct timeval tv;
765 1775
766 tv.tv_sec = (time_t)delay;
767 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
768
769 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1776 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
770 /* something not guaranteed by newer posix versions, but guaranteed */ 1777 /* something not guaranteed by newer posix versions, but guaranteed */
771 /* by older ones */ 1778 /* by older ones */
1779 EV_TV_SET (tv, delay);
772 select (0, 0, 0, 0, &tv); 1780 select (0, 0, 0, 0, &tv);
773#endif 1781#endif
774 } 1782 }
775} 1783}
776 1784
777/*****************************************************************************/ 1785/*****************************************************************************/
778 1786
779#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1787#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
780 1788
781/* find a suitable new size for the given array, */ 1789/* find a suitable new size for the given array, */
782/* hopefully by rounding to a ncie-to-malloc size */ 1790/* hopefully by rounding to a nice-to-malloc size */
783inline_size int 1791inline_size int
784array_nextsize (int elem, int cur, int cnt) 1792array_nextsize (int elem, int cur, int cnt)
785{ 1793{
786 int ncur = cur + 1; 1794 int ncur = cur + 1;
787 1795
788 do 1796 do
789 ncur <<= 1; 1797 ncur <<= 1;
790 while (cnt > ncur); 1798 while (cnt > ncur);
791 1799
792 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1800 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
793 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1801 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
794 { 1802 {
795 ncur *= elem; 1803 ncur *= elem;
796 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1804 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
797 ncur = ncur - sizeof (void *) * 4; 1805 ncur = ncur - sizeof (void *) * 4;
… …
799 } 1807 }
800 1808
801 return ncur; 1809 return ncur;
802} 1810}
803 1811
804static noinline void * 1812static void * noinline ecb_cold
805array_realloc (int elem, void *base, int *cur, int cnt) 1813array_realloc (int elem, void *base, int *cur, int cnt)
806{ 1814{
807 *cur = array_nextsize (elem, *cur, cnt); 1815 *cur = array_nextsize (elem, *cur, cnt);
808 return ev_realloc (base, elem * *cur); 1816 return ev_realloc (base, elem * *cur);
809} 1817}
… …
812 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1820 memset ((void *)(base), 0, sizeof (*(base)) * (count))
813 1821
814#define array_needsize(type,base,cur,cnt,init) \ 1822#define array_needsize(type,base,cur,cnt,init) \
815 if (expect_false ((cnt) > (cur))) \ 1823 if (expect_false ((cnt) > (cur))) \
816 { \ 1824 { \
817 int ocur_ = (cur); \ 1825 int ecb_unused ocur_ = (cur); \
818 (base) = (type *)array_realloc \ 1826 (base) = (type *)array_realloc \
819 (sizeof (type), (base), &(cur), (cnt)); \ 1827 (sizeof (type), (base), &(cur), (cnt)); \
820 init ((base) + (ocur_), (cur) - ocur_); \ 1828 init ((base) + (ocur_), (cur) - ocur_); \
821 } 1829 }
822 1830
… …
840pendingcb (EV_P_ ev_prepare *w, int revents) 1848pendingcb (EV_P_ ev_prepare *w, int revents)
841{ 1849{
842} 1850}
843 1851
844void noinline 1852void noinline
845ev_feed_event (EV_P_ void *w, int revents) 1853ev_feed_event (EV_P_ void *w, int revents) EV_THROW
846{ 1854{
847 W w_ = (W)w; 1855 W w_ = (W)w;
848 int pri = ABSPRI (w_); 1856 int pri = ABSPRI (w_);
849 1857
850 if (expect_false (w_->pending)) 1858 if (expect_false (w_->pending))
… …
854 w_->pending = ++pendingcnt [pri]; 1862 w_->pending = ++pendingcnt [pri];
855 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1863 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
856 pendings [pri][w_->pending - 1].w = w_; 1864 pendings [pri][w_->pending - 1].w = w_;
857 pendings [pri][w_->pending - 1].events = revents; 1865 pendings [pri][w_->pending - 1].events = revents;
858 } 1866 }
1867
1868 pendingpri = NUMPRI - 1;
859} 1869}
860 1870
861inline_speed void 1871inline_speed void
862feed_reverse (EV_P_ W w) 1872feed_reverse (EV_P_ W w)
863{ 1873{
… …
909 if (expect_true (!anfd->reify)) 1919 if (expect_true (!anfd->reify))
910 fd_event_nocheck (EV_A_ fd, revents); 1920 fd_event_nocheck (EV_A_ fd, revents);
911} 1921}
912 1922
913void 1923void
914ev_feed_fd_event (EV_P_ int fd, int revents) 1924ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
915{ 1925{
916 if (fd >= 0 && fd < anfdmax) 1926 if (fd >= 0 && fd < anfdmax)
917 fd_event_nocheck (EV_A_ fd, revents); 1927 fd_event_nocheck (EV_A_ fd, revents);
918} 1928}
919 1929
… …
922inline_size void 1932inline_size void
923fd_reify (EV_P) 1933fd_reify (EV_P)
924{ 1934{
925 int i; 1935 int i;
926 1936
1937#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1938 for (i = 0; i < fdchangecnt; ++i)
1939 {
1940 int fd = fdchanges [i];
1941 ANFD *anfd = anfds + fd;
1942
1943 if (anfd->reify & EV__IOFDSET && anfd->head)
1944 {
1945 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1946
1947 if (handle != anfd->handle)
1948 {
1949 unsigned long arg;
1950
1951 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1952
1953 /* handle changed, but fd didn't - we need to do it in two steps */
1954 backend_modify (EV_A_ fd, anfd->events, 0);
1955 anfd->events = 0;
1956 anfd->handle = handle;
1957 }
1958 }
1959 }
1960#endif
1961
927 for (i = 0; i < fdchangecnt; ++i) 1962 for (i = 0; i < fdchangecnt; ++i)
928 { 1963 {
929 int fd = fdchanges [i]; 1964 int fd = fdchanges [i];
930 ANFD *anfd = anfds + fd; 1965 ANFD *anfd = anfds + fd;
931 ev_io *w; 1966 ev_io *w;
932 1967
933 unsigned char events = 0; 1968 unsigned char o_events = anfd->events;
1969 unsigned char o_reify = anfd->reify;
934 1970
935 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1971 anfd->reify = 0;
936 events |= (unsigned char)w->events;
937 1972
938#if EV_SELECT_IS_WINSOCKET 1973 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
939 if (events)
940 { 1974 {
941 unsigned long arg; 1975 anfd->events = 0;
942 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1976
943 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1977 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
1978 anfd->events |= (unsigned char)w->events;
1979
1980 if (o_events != anfd->events)
1981 o_reify = EV__IOFDSET; /* actually |= */
944 } 1982 }
945#endif
946 1983
947 { 1984 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); 1985 backend_modify (EV_A_ fd, o_events, anfd->events);
956 }
957 } 1986 }
958 1987
959 fdchangecnt = 0; 1988 fdchangecnt = 0;
960} 1989}
961 1990
… …
973 fdchanges [fdchangecnt - 1] = fd; 2002 fdchanges [fdchangecnt - 1] = fd;
974 } 2003 }
975} 2004}
976 2005
977/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2006/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
978inline_speed void 2007inline_speed void ecb_cold
979fd_kill (EV_P_ int fd) 2008fd_kill (EV_P_ int fd)
980{ 2009{
981 ev_io *w; 2010 ev_io *w;
982 2011
983 while ((w = (ev_io *)anfds [fd].head)) 2012 while ((w = (ev_io *)anfds [fd].head))
… …
986 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2015 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
987 } 2016 }
988} 2017}
989 2018
990/* check whether the given fd is actually valid, for error recovery */ 2019/* check whether the given fd is actually valid, for error recovery */
991inline_size int 2020inline_size int ecb_cold
992fd_valid (int fd) 2021fd_valid (int fd)
993{ 2022{
994#ifdef _WIN32 2023#ifdef _WIN32
995 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2024 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
996#else 2025#else
997 return fcntl (fd, F_GETFD) != -1; 2026 return fcntl (fd, F_GETFD) != -1;
998#endif 2027#endif
999} 2028}
1000 2029
1001/* called on EBADF to verify fds */ 2030/* called on EBADF to verify fds */
1002static void noinline 2031static void noinline ecb_cold
1003fd_ebadf (EV_P) 2032fd_ebadf (EV_P)
1004{ 2033{
1005 int fd; 2034 int fd;
1006 2035
1007 for (fd = 0; fd < anfdmax; ++fd) 2036 for (fd = 0; fd < anfdmax; ++fd)
… …
1009 if (!fd_valid (fd) && errno == EBADF) 2038 if (!fd_valid (fd) && errno == EBADF)
1010 fd_kill (EV_A_ fd); 2039 fd_kill (EV_A_ fd);
1011} 2040}
1012 2041
1013/* called on ENOMEM in select/poll to kill some fds and retry */ 2042/* called on ENOMEM in select/poll to kill some fds and retry */
1014static void noinline 2043static void noinline ecb_cold
1015fd_enomem (EV_P) 2044fd_enomem (EV_P)
1016{ 2045{
1017 int fd; 2046 int fd;
1018 2047
1019 for (fd = anfdmax; fd--; ) 2048 for (fd = anfdmax; fd--; )
… …
1054} 2083}
1055 2084
1056/*****************************************************************************/ 2085/*****************************************************************************/
1057 2086
1058/* 2087/*
1059 * the heap functions want a real array index. array index 0 uis guaranteed to not 2088 * 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 2089 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
1061 * the branching factor of the d-tree. 2090 * the branching factor of the d-tree.
1062 */ 2091 */
1063 2092
1064/* 2093/*
… …
1214 2243
1215/*****************************************************************************/ 2244/*****************************************************************************/
1216 2245
1217#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2246#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1218 2247
1219static void noinline 2248static void noinline ecb_cold
1220evpipe_init (EV_P) 2249evpipe_init (EV_P)
1221{ 2250{
1222 if (!ev_is_active (&pipe_w)) 2251 if (!ev_is_active (&pipe_w))
1223 { 2252 {
2253 int fds [2];
2254
1224# if EV_USE_EVENTFD 2255# if EV_USE_EVENTFD
2256 fds [0] = -1;
1225 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2257 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1226 if (evfd < 0 && errno == EINVAL) 2258 if (fds [1] < 0 && errno == EINVAL)
1227 evfd = eventfd (0, 0); 2259 fds [1] = eventfd (0, 0);
1228 2260
1229 if (evfd >= 0) 2261 if (fds [1] < 0)
2262# endif
1230 { 2263 {
2264 while (pipe (fds))
2265 ev_syserr ("(libev) error creating signal/async pipe");
2266
2267 fd_intern (fds [0]);
2268 }
2269
1231 evpipe [0] = -1; 2270 evpipe [0] = fds [0];
1232 fd_intern (evfd); /* doing it twice doesn't hurt */ 2271
1233 ev_io_set (&pipe_w, evfd, EV_READ); 2272 if (evpipe [1] < 0)
2273 evpipe [1] = fds [1]; /* first call, set write fd */
2274 else
2275 {
2276 /* on subsequent calls, do not change evpipe [1] */
2277 /* so that evpipe_write can always rely on its value. */
2278 /* this branch does not do anything sensible on windows, */
2279 /* so must not be executed on windows */
2280
2281 dup2 (fds [1], evpipe [1]);
2282 close (fds [1]);
2283 }
2284
2285 fd_intern (evpipe [1]);
2286
2287 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2288 ev_io_start (EV_A_ &pipe_w);
2289 ev_unref (EV_A); /* watcher should not keep loop alive */
2290 }
2291}
2292
2293inline_speed void
2294evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2295{
2296 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2297
2298 if (expect_true (*flag))
2299 return;
2300
2301 *flag = 1;
2302 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2303
2304 pipe_write_skipped = 1;
2305
2306 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2307
2308 if (pipe_write_wanted)
2309 {
2310 int old_errno;
2311
2312 pipe_write_skipped = 0;
2313 ECB_MEMORY_FENCE_RELEASE;
2314
2315 old_errno = errno; /* save errno because write will clobber it */
2316
2317#if EV_USE_EVENTFD
2318 if (evpipe [0] < 0)
2319 {
2320 uint64_t counter = 1;
2321 write (evpipe [1], &counter, sizeof (uint64_t));
1234 } 2322 }
1235 else 2323 else
1236# endif 2324#endif
1237 { 2325 {
1238 while (pipe (evpipe)) 2326#ifdef _WIN32
1239 ev_syserr ("(libev) error creating signal/async pipe"); 2327 WSABUF buf;
1240 2328 DWORD sent;
1241 fd_intern (evpipe [0]); 2329 buf.buf = &buf;
1242 fd_intern (evpipe [1]); 2330 buf.len = 1;
1243 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2331 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2332#else
2333 write (evpipe [1], &(evpipe [1]), 1);
2334#endif
1244 } 2335 }
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 2336
1271 errno = old_errno; 2337 errno = old_errno;
1272 } 2338 }
1273} 2339}
1274 2340
… …
1277static void 2343static void
1278pipecb (EV_P_ ev_io *iow, int revents) 2344pipecb (EV_P_ ev_io *iow, int revents)
1279{ 2345{
1280 int i; 2346 int i;
1281 2347
2348 if (revents & EV_READ)
2349 {
1282#if EV_USE_EVENTFD 2350#if EV_USE_EVENTFD
1283 if (evfd >= 0) 2351 if (evpipe [0] < 0)
1284 { 2352 {
1285 uint64_t counter; 2353 uint64_t counter;
1286 read (evfd, &counter, sizeof (uint64_t)); 2354 read (evpipe [1], &counter, sizeof (uint64_t));
1287 } 2355 }
1288 else 2356 else
1289#endif 2357#endif
1290 { 2358 {
1291 char dummy; 2359 char dummy[4];
2360#ifdef _WIN32
2361 WSABUF buf;
2362 DWORD recvd;
2363 DWORD flags = 0;
2364 buf.buf = dummy;
2365 buf.len = sizeof (dummy);
2366 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2367#else
1292 read (evpipe [0], &dummy, 1); 2368 read (evpipe [0], &dummy, sizeof (dummy));
2369#endif
2370 }
1293 } 2371 }
1294 2372
2373 pipe_write_skipped = 0;
2374
2375 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2376
2377#if EV_SIGNAL_ENABLE
1295 if (sig_pending) 2378 if (sig_pending)
1296 { 2379 {
1297 sig_pending = 0; 2380 sig_pending = 0;
2381
2382 ECB_MEMORY_FENCE;
1298 2383
1299 for (i = EV_NSIG - 1; i--; ) 2384 for (i = EV_NSIG - 1; i--; )
1300 if (expect_false (signals [i].pending)) 2385 if (expect_false (signals [i].pending))
1301 ev_feed_signal_event (EV_A_ i + 1); 2386 ev_feed_signal_event (EV_A_ i + 1);
1302 } 2387 }
2388#endif
1303 2389
1304#if EV_ASYNC_ENABLE 2390#if EV_ASYNC_ENABLE
1305 if (async_pending) 2391 if (async_pending)
1306 { 2392 {
1307 async_pending = 0; 2393 async_pending = 0;
2394
2395 ECB_MEMORY_FENCE;
1308 2396
1309 for (i = asynccnt; i--; ) 2397 for (i = asynccnt; i--; )
1310 if (asyncs [i]->sent) 2398 if (asyncs [i]->sent)
1311 { 2399 {
1312 asyncs [i]->sent = 0; 2400 asyncs [i]->sent = 0;
2401 ECB_MEMORY_FENCE_RELEASE;
1313 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2402 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1314 } 2403 }
1315 } 2404 }
1316#endif 2405#endif
1317} 2406}
1318 2407
1319/*****************************************************************************/ 2408/*****************************************************************************/
1320 2409
2410void
2411ev_feed_signal (int signum) EV_THROW
2412{
2413#if EV_MULTIPLICITY
2414 EV_P;
2415 ECB_MEMORY_FENCE_ACQUIRE;
2416 EV_A = signals [signum - 1].loop;
2417
2418 if (!EV_A)
2419 return;
2420#endif
2421
2422 signals [signum - 1].pending = 1;
2423 evpipe_write (EV_A_ &sig_pending);
2424}
2425
1321static void 2426static void
1322ev_sighandler (int signum) 2427ev_sighandler (int signum)
1323{ 2428{
1324#if EV_MULTIPLICITY
1325 EV_P = signals [signum - 1].loop;
1326#endif
1327
1328#ifdef _WIN32 2429#ifdef _WIN32
1329 signal (signum, ev_sighandler); 2430 signal (signum, ev_sighandler);
1330#endif 2431#endif
1331 2432
1332 signals [signum - 1].pending = 1; 2433 ev_feed_signal (signum);
1333 evpipe_write (EV_A_ &sig_pending);
1334} 2434}
1335 2435
1336void noinline 2436void noinline
1337ev_feed_signal_event (EV_P_ int signum) 2437ev_feed_signal_event (EV_P_ int signum) EV_THROW
1338{ 2438{
1339 WL w; 2439 WL w;
1340 2440
1341 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2441 if (expect_false (signum <= 0 || signum >= EV_NSIG))
1342 return; 2442 return;
1343 2443
1344 --signum; 2444 --signum;
1345 2445
1346#if EV_MULTIPLICITY 2446#if EV_MULTIPLICITY
… …
1350 if (expect_false (signals [signum].loop != EV_A)) 2450 if (expect_false (signals [signum].loop != EV_A))
1351 return; 2451 return;
1352#endif 2452#endif
1353 2453
1354 signals [signum].pending = 0; 2454 signals [signum].pending = 0;
2455 ECB_MEMORY_FENCE_RELEASE;
1355 2456
1356 for (w = signals [signum].head; w; w = w->next) 2457 for (w = signals [signum].head; w; w = w->next)
1357 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2458 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1358} 2459}
1359 2460
… …
1438 2539
1439#endif 2540#endif
1440 2541
1441/*****************************************************************************/ 2542/*****************************************************************************/
1442 2543
2544#if EV_USE_IOCP
2545# include "ev_iocp.c"
2546#endif
1443#if EV_USE_PORT 2547#if EV_USE_PORT
1444# include "ev_port.c" 2548# include "ev_port.c"
1445#endif 2549#endif
1446#if EV_USE_KQUEUE 2550#if EV_USE_KQUEUE
1447# include "ev_kqueue.c" 2551# include "ev_kqueue.c"
… …
1454#endif 2558#endif
1455#if EV_USE_SELECT 2559#if EV_USE_SELECT
1456# include "ev_select.c" 2560# include "ev_select.c"
1457#endif 2561#endif
1458 2562
1459int 2563int ecb_cold
1460ev_version_major (void) 2564ev_version_major (void) EV_THROW
1461{ 2565{
1462 return EV_VERSION_MAJOR; 2566 return EV_VERSION_MAJOR;
1463} 2567}
1464 2568
1465int 2569int ecb_cold
1466ev_version_minor (void) 2570ev_version_minor (void) EV_THROW
1467{ 2571{
1468 return EV_VERSION_MINOR; 2572 return EV_VERSION_MINOR;
1469} 2573}
1470 2574
1471/* return true if we are running with elevated privileges and should ignore env variables */ 2575/* return true if we are running with elevated privileges and should ignore env variables */
1472int inline_size 2576int inline_size ecb_cold
1473enable_secure (void) 2577enable_secure (void)
1474{ 2578{
1475#ifdef _WIN32 2579#ifdef _WIN32
1476 return 0; 2580 return 0;
1477#else 2581#else
1478 return getuid () != geteuid () 2582 return getuid () != geteuid ()
1479 || getgid () != getegid (); 2583 || getgid () != getegid ();
1480#endif 2584#endif
1481} 2585}
1482 2586
1483unsigned int 2587unsigned int ecb_cold
1484ev_supported_backends (void) 2588ev_supported_backends (void) EV_THROW
1485{ 2589{
1486 unsigned int flags = 0; 2590 unsigned int flags = 0;
1487 2591
1488 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2592 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1489 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2593 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1492 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2596 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1493 2597
1494 return flags; 2598 return flags;
1495} 2599}
1496 2600
1497unsigned int 2601unsigned int ecb_cold
1498ev_recommended_backends (void) 2602ev_recommended_backends (void) EV_THROW
1499{ 2603{
1500 unsigned int flags = ev_supported_backends (); 2604 unsigned int flags = ev_supported_backends ();
1501 2605
1502#ifndef __NetBSD__ 2606#ifndef __NetBSD__
1503 /* kqueue is borked on everything but netbsd apparently */ 2607 /* kqueue is borked on everything but netbsd apparently */
… …
1514#endif 2618#endif
1515 2619
1516 return flags; 2620 return flags;
1517} 2621}
1518 2622
2623unsigned int ecb_cold
2624ev_embeddable_backends (void) EV_THROW
2625{
2626 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2627
2628 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2629 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2630 flags &= ~EVBACKEND_EPOLL;
2631
2632 return flags;
2633}
2634
1519unsigned int 2635unsigned 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) 2636ev_backend (EV_P) EV_THROW
1533{ 2637{
1534 return backend; 2638 return backend;
1535} 2639}
1536 2640
1537#if EV_FEATURE_API 2641#if EV_FEATURE_API
1538unsigned int 2642unsigned int
1539ev_iteration (EV_P) 2643ev_iteration (EV_P) EV_THROW
1540{ 2644{
1541 return loop_count; 2645 return loop_count;
1542} 2646}
1543 2647
1544unsigned int 2648unsigned int
1545ev_depth (EV_P) 2649ev_depth (EV_P) EV_THROW
1546{ 2650{
1547 return loop_depth; 2651 return loop_depth;
1548} 2652}
1549 2653
1550void 2654void
1551ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2655ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1552{ 2656{
1553 io_blocktime = interval; 2657 io_blocktime = interval;
1554} 2658}
1555 2659
1556void 2660void
1557ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2661ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1558{ 2662{
1559 timeout_blocktime = interval; 2663 timeout_blocktime = interval;
1560} 2664}
1561 2665
1562void 2666void
1563ev_set_userdata (EV_P_ void *data) 2667ev_set_userdata (EV_P_ void *data) EV_THROW
1564{ 2668{
1565 userdata = data; 2669 userdata = data;
1566} 2670}
1567 2671
1568void * 2672void *
1569ev_userdata (EV_P) 2673ev_userdata (EV_P) EV_THROW
1570{ 2674{
1571 return userdata; 2675 return userdata;
1572} 2676}
1573 2677
2678void
1574void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2679ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_THROW
1575{ 2680{
1576 invoke_cb = invoke_pending_cb; 2681 invoke_cb = invoke_pending_cb;
1577} 2682}
1578 2683
2684void
1579void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2685ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
1580{ 2686{
1581 release_cb = release; 2687 release_cb = release;
1582 acquire_cb = acquire; 2688 acquire_cb = acquire;
1583} 2689}
1584#endif 2690#endif
1585 2691
1586/* initialise a loop structure, must be zero-initialised */ 2692/* initialise a loop structure, must be zero-initialised */
1587static void noinline 2693static void noinline ecb_cold
1588loop_init (EV_P_ unsigned int flags) 2694loop_init (EV_P_ unsigned int flags) EV_THROW
1589{ 2695{
1590 if (!backend) 2696 if (!backend)
1591 { 2697 {
2698 origflags = flags;
2699
1592#if EV_USE_REALTIME 2700#if EV_USE_REALTIME
1593 if (!have_realtime) 2701 if (!have_realtime)
1594 { 2702 {
1595 struct timespec ts; 2703 struct timespec ts;
1596 2704
… …
1618 if (!(flags & EVFLAG_NOENV) 2726 if (!(flags & EVFLAG_NOENV)
1619 && !enable_secure () 2727 && !enable_secure ()
1620 && getenv ("LIBEV_FLAGS")) 2728 && getenv ("LIBEV_FLAGS"))
1621 flags = atoi (getenv ("LIBEV_FLAGS")); 2729 flags = atoi (getenv ("LIBEV_FLAGS"));
1622 2730
1623 ev_rt_now = ev_time (); 2731 ev_rt_now = ev_time ();
1624 mn_now = get_clock (); 2732 mn_now = get_clock ();
1625 now_floor = mn_now; 2733 now_floor = mn_now;
1626 rtmn_diff = ev_rt_now - mn_now; 2734 rtmn_diff = ev_rt_now - mn_now;
1627#if EV_FEATURE_API 2735#if EV_FEATURE_API
1628 invoke_cb = ev_invoke_pending; 2736 invoke_cb = ev_invoke_pending;
1629#endif 2737#endif
1630 2738
1631 io_blocktime = 0.; 2739 io_blocktime = 0.;
1632 timeout_blocktime = 0.; 2740 timeout_blocktime = 0.;
1633 backend = 0; 2741 backend = 0;
1634 backend_fd = -1; 2742 backend_fd = -1;
1635 sig_pending = 0; 2743 sig_pending = 0;
1636#if EV_ASYNC_ENABLE 2744#if EV_ASYNC_ENABLE
1637 async_pending = 0; 2745 async_pending = 0;
1638#endif 2746#endif
2747 pipe_write_skipped = 0;
2748 pipe_write_wanted = 0;
2749 evpipe [0] = -1;
2750 evpipe [1] = -1;
1639#if EV_USE_INOTIFY 2751#if EV_USE_INOTIFY
1640 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2752 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1641#endif 2753#endif
1642#if EV_USE_SIGNALFD 2754#if EV_USE_SIGNALFD
1643 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2755 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1644#endif 2756#endif
1645 2757
1646 if (!(flags & 0x0000ffffU)) 2758 if (!(flags & EVBACKEND_MASK))
1647 flags |= ev_recommended_backends (); 2759 flags |= ev_recommended_backends ();
1648 2760
2761#if EV_USE_IOCP
2762 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2763#endif
1649#if EV_USE_PORT 2764#if EV_USE_PORT
1650 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2765 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1651#endif 2766#endif
1652#if EV_USE_KQUEUE 2767#if EV_USE_KQUEUE
1653 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2768 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1670#endif 2785#endif
1671 } 2786 }
1672} 2787}
1673 2788
1674/* free up a loop structure */ 2789/* free up a loop structure */
1675static void noinline 2790void ecb_cold
1676loop_destroy (EV_P) 2791ev_loop_destroy (EV_P)
1677{ 2792{
1678 int i; 2793 int i;
2794
2795#if EV_MULTIPLICITY
2796 /* mimic free (0) */
2797 if (!EV_A)
2798 return;
2799#endif
2800
2801#if EV_CLEANUP_ENABLE
2802 /* queue cleanup watchers (and execute them) */
2803 if (expect_false (cleanupcnt))
2804 {
2805 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2806 EV_INVOKE_PENDING;
2807 }
2808#endif
2809
2810#if EV_CHILD_ENABLE
2811 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2812 {
2813 ev_ref (EV_A); /* child watcher */
2814 ev_signal_stop (EV_A_ &childev);
2815 }
2816#endif
1679 2817
1680 if (ev_is_active (&pipe_w)) 2818 if (ev_is_active (&pipe_w))
1681 { 2819 {
1682 /*ev_ref (EV_A);*/ 2820 /*ev_ref (EV_A);*/
1683 /*ev_io_stop (EV_A_ &pipe_w);*/ 2821 /*ev_io_stop (EV_A_ &pipe_w);*/
1684 2822
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]); 2823 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1693 EV_WIN32_CLOSE_FD (evpipe [1]); 2824 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1694 }
1695 } 2825 }
1696 2826
1697#if EV_USE_SIGNALFD 2827#if EV_USE_SIGNALFD
1698 if (ev_is_active (&sigfd_w)) 2828 if (ev_is_active (&sigfd_w))
1699 close (sigfd); 2829 close (sigfd);
… …
1705#endif 2835#endif
1706 2836
1707 if (backend_fd >= 0) 2837 if (backend_fd >= 0)
1708 close (backend_fd); 2838 close (backend_fd);
1709 2839
2840#if EV_USE_IOCP
2841 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2842#endif
1710#if EV_USE_PORT 2843#if EV_USE_PORT
1711 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2844 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1712#endif 2845#endif
1713#if EV_USE_KQUEUE 2846#if EV_USE_KQUEUE
1714 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2847 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1741 array_free (periodic, EMPTY); 2874 array_free (periodic, EMPTY);
1742#endif 2875#endif
1743#if EV_FORK_ENABLE 2876#if EV_FORK_ENABLE
1744 array_free (fork, EMPTY); 2877 array_free (fork, EMPTY);
1745#endif 2878#endif
2879#if EV_CLEANUP_ENABLE
2880 array_free (cleanup, EMPTY);
2881#endif
1746 array_free (prepare, EMPTY); 2882 array_free (prepare, EMPTY);
1747 array_free (check, EMPTY); 2883 array_free (check, EMPTY);
1748#if EV_ASYNC_ENABLE 2884#if EV_ASYNC_ENABLE
1749 array_free (async, EMPTY); 2885 array_free (async, EMPTY);
1750#endif 2886#endif
1751 2887
1752 backend = 0; 2888 backend = 0;
2889
2890#if EV_MULTIPLICITY
2891 if (ev_is_default_loop (EV_A))
2892#endif
2893 ev_default_loop_ptr = 0;
2894#if EV_MULTIPLICITY
2895 else
2896 ev_free (EV_A);
2897#endif
1753} 2898}
1754 2899
1755#if EV_USE_INOTIFY 2900#if EV_USE_INOTIFY
1756inline_size void infy_fork (EV_P); 2901inline_size void infy_fork (EV_P);
1757#endif 2902#endif
… …
1770#endif 2915#endif
1771#if EV_USE_INOTIFY 2916#if EV_USE_INOTIFY
1772 infy_fork (EV_A); 2917 infy_fork (EV_A);
1773#endif 2918#endif
1774 2919
2920#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1775 if (ev_is_active (&pipe_w)) 2921 if (ev_is_active (&pipe_w))
1776 { 2922 {
1777 /* this "locks" the handlers against writing to the pipe */ 2923 /* 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 2924
1784 ev_ref (EV_A); 2925 ev_ref (EV_A);
1785 ev_io_stop (EV_A_ &pipe_w); 2926 ev_io_stop (EV_A_ &pipe_w);
1786 2927
1787#if EV_USE_EVENTFD
1788 if (evfd >= 0)
1789 close (evfd);
1790#endif
1791
1792 if (evpipe [0] >= 0) 2928 if (evpipe [0] >= 0)
1793 {
1794 EV_WIN32_CLOSE_FD (evpipe [0]); 2929 EV_WIN32_CLOSE_FD (evpipe [0]);
1795 EV_WIN32_CLOSE_FD (evpipe [1]);
1796 }
1797 2930
1798#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1799 evpipe_init (EV_A); 2931 evpipe_init (EV_A);
1800 /* now iterate over everything, in case we missed something */ 2932 /* iterate over everything, in case we missed something before */
1801 pipecb (EV_A_ &pipe_w, EV_READ); 2933 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1802#endif
1803 } 2934 }
2935#endif
1804 2936
1805 postfork = 0; 2937 postfork = 0;
1806} 2938}
1807 2939
1808#if EV_MULTIPLICITY 2940#if EV_MULTIPLICITY
1809 2941
1810struct ev_loop * 2942struct ev_loop * ecb_cold
1811ev_loop_new (unsigned int flags) 2943ev_loop_new (unsigned int flags) EV_THROW
1812{ 2944{
1813 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2945 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1814 2946
1815 memset (EV_A, 0, sizeof (struct ev_loop)); 2947 memset (EV_A, 0, sizeof (struct ev_loop));
1816 loop_init (EV_A_ flags); 2948 loop_init (EV_A_ flags);
1817 2949
1818 if (ev_backend (EV_A)) 2950 if (ev_backend (EV_A))
1819 return EV_A; 2951 return EV_A;
1820 2952
2953 ev_free (EV_A);
1821 return 0; 2954 return 0;
1822} 2955}
1823 2956
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 */ 2957#endif /* multiplicity */
1837 2958
1838#if EV_VERIFY 2959#if EV_VERIFY
1839static void noinline 2960static void noinline ecb_cold
1840verify_watcher (EV_P_ W w) 2961verify_watcher (EV_P_ W w)
1841{ 2962{
1842 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2963 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1843 2964
1844 if (w->pending) 2965 if (w->pending)
1845 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2966 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1846} 2967}
1847 2968
1848static void noinline 2969static void noinline ecb_cold
1849verify_heap (EV_P_ ANHE *heap, int N) 2970verify_heap (EV_P_ ANHE *heap, int N)
1850{ 2971{
1851 int i; 2972 int i;
1852 2973
1853 for (i = HEAP0; i < N + HEAP0; ++i) 2974 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1858 2979
1859 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2980 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1860 } 2981 }
1861} 2982}
1862 2983
1863static void noinline 2984static void noinline ecb_cold
1864array_verify (EV_P_ W *ws, int cnt) 2985array_verify (EV_P_ W *ws, int cnt)
1865{ 2986{
1866 while (cnt--) 2987 while (cnt--)
1867 { 2988 {
1868 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2989 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
1870 } 2991 }
1871} 2992}
1872#endif 2993#endif
1873 2994
1874#if EV_FEATURE_API 2995#if EV_FEATURE_API
1875void 2996void ecb_cold
1876ev_verify (EV_P) 2997ev_verify (EV_P) EV_THROW
1877{ 2998{
1878#if EV_VERIFY 2999#if EV_VERIFY
1879 int i; 3000 int i;
1880 WL w; 3001 WL w, w2;
1881 3002
1882 assert (activecnt >= -1); 3003 assert (activecnt >= -1);
1883 3004
1884 assert (fdchangemax >= fdchangecnt); 3005 assert (fdchangemax >= fdchangecnt);
1885 for (i = 0; i < fdchangecnt; ++i) 3006 for (i = 0; i < fdchangecnt; ++i)
1886 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3007 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1887 3008
1888 assert (anfdmax >= 0); 3009 assert (anfdmax >= 0);
1889 for (i = 0; i < anfdmax; ++i) 3010 for (i = 0; i < anfdmax; ++i)
3011 {
3012 int j = 0;
3013
1890 for (w = anfds [i].head; w; w = w->next) 3014 for (w = w2 = anfds [i].head; w; w = w->next)
1891 { 3015 {
1892 verify_watcher (EV_A_ (W)w); 3016 verify_watcher (EV_A_ (W)w);
3017
3018 if (j++ & 1)
3019 {
3020 assert (("libev: io watcher list contains a loop", w != w2));
3021 w2 = w2->next;
3022 }
3023
1893 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3024 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)); 3025 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1895 } 3026 }
3027 }
1896 3028
1897 assert (timermax >= timercnt); 3029 assert (timermax >= timercnt);
1898 verify_heap (EV_A_ timers, timercnt); 3030 verify_heap (EV_A_ timers, timercnt);
1899 3031
1900#if EV_PERIODIC_ENABLE 3032#if EV_PERIODIC_ENABLE
… …
1915#if EV_FORK_ENABLE 3047#if EV_FORK_ENABLE
1916 assert (forkmax >= forkcnt); 3048 assert (forkmax >= forkcnt);
1917 array_verify (EV_A_ (W *)forks, forkcnt); 3049 array_verify (EV_A_ (W *)forks, forkcnt);
1918#endif 3050#endif
1919 3051
3052#if EV_CLEANUP_ENABLE
3053 assert (cleanupmax >= cleanupcnt);
3054 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
3055#endif
3056
1920#if EV_ASYNC_ENABLE 3057#if EV_ASYNC_ENABLE
1921 assert (asyncmax >= asynccnt); 3058 assert (asyncmax >= asynccnt);
1922 array_verify (EV_A_ (W *)asyncs, asynccnt); 3059 array_verify (EV_A_ (W *)asyncs, asynccnt);
1923#endif 3060#endif
1924 3061
… …
1941#endif 3078#endif
1942} 3079}
1943#endif 3080#endif
1944 3081
1945#if EV_MULTIPLICITY 3082#if EV_MULTIPLICITY
1946struct ev_loop * 3083struct ev_loop * ecb_cold
1947ev_default_loop_init (unsigned int flags)
1948#else 3084#else
1949int 3085int
3086#endif
1950ev_default_loop (unsigned int flags) 3087ev_default_loop (unsigned int flags) EV_THROW
1951#endif
1952{ 3088{
1953 if (!ev_default_loop_ptr) 3089 if (!ev_default_loop_ptr)
1954 { 3090 {
1955#if EV_MULTIPLICITY 3091#if EV_MULTIPLICITY
1956 EV_P = ev_default_loop_ptr = &default_loop_struct; 3092 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1975 3111
1976 return ev_default_loop_ptr; 3112 return ev_default_loop_ptr;
1977} 3113}
1978 3114
1979void 3115void
1980ev_default_destroy (void) 3116ev_loop_fork (EV_P) EV_THROW
1981{ 3117{
1982#if EV_MULTIPLICITY 3118 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} 3119}
2005 3120
2006/*****************************************************************************/ 3121/*****************************************************************************/
2007 3122
2008void 3123void
… …
2010{ 3125{
2011 EV_CB_INVOKE ((W)w, revents); 3126 EV_CB_INVOKE ((W)w, revents);
2012} 3127}
2013 3128
2014unsigned int 3129unsigned int
2015ev_pending_count (EV_P) 3130ev_pending_count (EV_P) EV_THROW
2016{ 3131{
2017 int pri; 3132 int pri;
2018 unsigned int count = 0; 3133 unsigned int count = 0;
2019 3134
2020 for (pri = NUMPRI; pri--; ) 3135 for (pri = NUMPRI; pri--; )
… …
2024} 3139}
2025 3140
2026void noinline 3141void noinline
2027ev_invoke_pending (EV_P) 3142ev_invoke_pending (EV_P)
2028{ 3143{
2029 int pri; 3144 pendingpri = NUMPRI;
2030 3145
2031 for (pri = NUMPRI; pri--; ) 3146 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */
3147 {
3148 --pendingpri;
3149
2032 while (pendingcnt [pri]) 3150 while (pendingcnt [pendingpri])
2033 { 3151 {
2034 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3152 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2035 3153
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; 3154 p->w->pending = 0;
2040 EV_CB_INVOKE (p->w, p->events); 3155 EV_CB_INVOKE (p->w, p->events);
2041 EV_FREQUENT_CHECK; 3156 EV_FREQUENT_CHECK;
2042 } 3157 }
3158 }
2043} 3159}
2044 3160
2045#if EV_IDLE_ENABLE 3161#if EV_IDLE_ENABLE
2046/* make idle watchers pending. this handles the "call-idle */ 3162/* make idle watchers pending. this handles the "call-idle */
2047/* only when higher priorities are idle" logic */ 3163/* only when higher priorities are idle" logic */
… …
2104 feed_reverse_done (EV_A_ EV_TIMER); 3220 feed_reverse_done (EV_A_ EV_TIMER);
2105 } 3221 }
2106} 3222}
2107 3223
2108#if EV_PERIODIC_ENABLE 3224#if EV_PERIODIC_ENABLE
3225
3226static void noinline
3227periodic_recalc (EV_P_ ev_periodic *w)
3228{
3229 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3230 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3231
3232 /* the above almost always errs on the low side */
3233 while (at <= ev_rt_now)
3234 {
3235 ev_tstamp nat = at + w->interval;
3236
3237 /* when resolution fails us, we use ev_rt_now */
3238 if (expect_false (nat == at))
3239 {
3240 at = ev_rt_now;
3241 break;
3242 }
3243
3244 at = nat;
3245 }
3246
3247 ev_at (w) = at;
3248}
3249
2109/* make periodics pending */ 3250/* make periodics pending */
2110inline_size void 3251inline_size void
2111periodics_reify (EV_P) 3252periodics_reify (EV_P)
2112{ 3253{
2113 EV_FREQUENT_CHECK; 3254 EV_FREQUENT_CHECK;
2114 3255
2115 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3256 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2116 { 3257 {
2117 int feed_count = 0;
2118
2119 do 3258 do
2120 { 3259 {
2121 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3260 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2122 3261
2123 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3262 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2132 ANHE_at_cache (periodics [HEAP0]); 3271 ANHE_at_cache (periodics [HEAP0]);
2133 downheap (periodics, periodiccnt, HEAP0); 3272 downheap (periodics, periodiccnt, HEAP0);
2134 } 3273 }
2135 else if (w->interval) 3274 else if (w->interval)
2136 { 3275 {
2137 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3276 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]); 3277 ANHE_at_cache (periodics [HEAP0]);
2152 downheap (periodics, periodiccnt, HEAP0); 3278 downheap (periodics, periodiccnt, HEAP0);
2153 } 3279 }
2154 else 3280 else
2155 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3281 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2162 feed_reverse_done (EV_A_ EV_PERIODIC); 3288 feed_reverse_done (EV_A_ EV_PERIODIC);
2163 } 3289 }
2164} 3290}
2165 3291
2166/* simply recalculate all periodics */ 3292/* simply recalculate all periodics */
2167/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 3293/* TODO: maybe ensure that at least one event happens when jumping forward? */
2168static void noinline 3294static void noinline ecb_cold
2169periodics_reschedule (EV_P) 3295periodics_reschedule (EV_P)
2170{ 3296{
2171 int i; 3297 int i;
2172 3298
2173 /* adjust periodics after time jump */ 3299 /* adjust periodics after time jump */
… …
2176 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3302 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2177 3303
2178 if (w->reschedule_cb) 3304 if (w->reschedule_cb)
2179 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3305 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2180 else if (w->interval) 3306 else if (w->interval)
2181 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3307 periodic_recalc (EV_A_ w);
2182 3308
2183 ANHE_at_cache (periodics [i]); 3309 ANHE_at_cache (periodics [i]);
2184 } 3310 }
2185 3311
2186 reheap (periodics, periodiccnt); 3312 reheap (periodics, periodiccnt);
2187} 3313}
2188#endif 3314#endif
2189 3315
2190/* adjust all timers by a given offset */ 3316/* adjust all timers by a given offset */
2191static void noinline 3317static void noinline ecb_cold
2192timers_reschedule (EV_P_ ev_tstamp adjust) 3318timers_reschedule (EV_P_ ev_tstamp adjust)
2193{ 3319{
2194 int i; 3320 int i;
2195 3321
2196 for (i = 0; i < timercnt; ++i) 3322 for (i = 0; i < timercnt; ++i)
… …
2233 * doesn't hurt either as we only do this on time-jumps or 3359 * doesn't hurt either as we only do this on time-jumps or
2234 * in the unlikely event of having been preempted here. 3360 * in the unlikely event of having been preempted here.
2235 */ 3361 */
2236 for (i = 4; --i; ) 3362 for (i = 4; --i; )
2237 { 3363 {
3364 ev_tstamp diff;
2238 rtmn_diff = ev_rt_now - mn_now; 3365 rtmn_diff = ev_rt_now - mn_now;
2239 3366
3367 diff = odiff - rtmn_diff;
3368
2240 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3369 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2241 return; /* all is well */ 3370 return; /* all is well */
2242 3371
2243 ev_rt_now = ev_time (); 3372 ev_rt_now = ev_time ();
2244 mn_now = get_clock (); 3373 mn_now = get_clock ();
2245 now_floor = mn_now; 3374 now_floor = mn_now;
… …
2267 3396
2268 mn_now = ev_rt_now; 3397 mn_now = ev_rt_now;
2269 } 3398 }
2270} 3399}
2271 3400
2272void 3401int
2273ev_loop (EV_P_ int flags) 3402ev_run (EV_P_ int flags)
2274{ 3403{
2275#if EV_FEATURE_API 3404#if EV_FEATURE_API
2276 ++loop_depth; 3405 ++loop_depth;
2277#endif 3406#endif
2278 3407
2279 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 3408 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2280 3409
2281 loop_done = EVUNLOOP_CANCEL; 3410 loop_done = EVBREAK_CANCEL;
2282 3411
2283 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 3412 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2284 3413
2285 do 3414 do
2286 { 3415 {
… …
2329 /* calculate blocking time */ 3458 /* calculate blocking time */
2330 { 3459 {
2331 ev_tstamp waittime = 0.; 3460 ev_tstamp waittime = 0.;
2332 ev_tstamp sleeptime = 0.; 3461 ev_tstamp sleeptime = 0.;
2333 3462
3463 /* remember old timestamp for io_blocktime calculation */
3464 ev_tstamp prev_mn_now = mn_now;
3465
3466 /* update time to cancel out callback processing overhead */
3467 time_update (EV_A_ 1e100);
3468
3469 /* from now on, we want a pipe-wake-up */
3470 pipe_write_wanted = 1;
3471
3472 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3473
2334 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3474 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2335 { 3475 {
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; 3476 waittime = MAX_BLOCKTIME;
2343 3477
2344 if (timercnt) 3478 if (timercnt)
2345 { 3479 {
2346 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3480 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2347 if (waittime > to) waittime = to; 3481 if (waittime > to) waittime = to;
2348 } 3482 }
2349 3483
2350#if EV_PERIODIC_ENABLE 3484#if EV_PERIODIC_ENABLE
2351 if (periodiccnt) 3485 if (periodiccnt)
2352 { 3486 {
2353 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3487 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2354 if (waittime > to) waittime = to; 3488 if (waittime > to) waittime = to;
2355 } 3489 }
2356#endif 3490#endif
2357 3491
2358 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3492 /* don't let timeouts decrease the waittime below timeout_blocktime */
2359 if (expect_false (waittime < timeout_blocktime)) 3493 if (expect_false (waittime < timeout_blocktime))
2360 waittime = timeout_blocktime; 3494 waittime = timeout_blocktime;
3495
3496 /* at this point, we NEED to wait, so we have to ensure */
3497 /* to pass a minimum nonzero value to the backend */
3498 if (expect_false (waittime < backend_mintime))
3499 waittime = backend_mintime;
2361 3500
2362 /* extra check because io_blocktime is commonly 0 */ 3501 /* extra check because io_blocktime is commonly 0 */
2363 if (expect_false (io_blocktime)) 3502 if (expect_false (io_blocktime))
2364 { 3503 {
2365 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3504 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2366 3505
2367 if (sleeptime > waittime - backend_fudge) 3506 if (sleeptime > waittime - backend_mintime)
2368 sleeptime = waittime - backend_fudge; 3507 sleeptime = waittime - backend_mintime;
2369 3508
2370 if (expect_true (sleeptime > 0.)) 3509 if (expect_true (sleeptime > 0.))
2371 { 3510 {
2372 ev_sleep (sleeptime); 3511 ev_sleep (sleeptime);
2373 waittime -= sleeptime; 3512 waittime -= sleeptime;
… …
2376 } 3515 }
2377 3516
2378#if EV_FEATURE_API 3517#if EV_FEATURE_API
2379 ++loop_count; 3518 ++loop_count;
2380#endif 3519#endif
2381 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3520 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2382 backend_poll (EV_A_ waittime); 3521 backend_poll (EV_A_ waittime);
2383 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 3522 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3523
3524 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3525
3526 ECB_MEMORY_FENCE_ACQUIRE;
3527 if (pipe_write_skipped)
3528 {
3529 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3530 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3531 }
3532
2384 3533
2385 /* update ev_rt_now, do magic */ 3534 /* update ev_rt_now, do magic */
2386 time_update (EV_A_ waittime + sleeptime); 3535 time_update (EV_A_ waittime + sleeptime);
2387 } 3536 }
2388 3537
… …
2406 EV_INVOKE_PENDING; 3555 EV_INVOKE_PENDING;
2407 } 3556 }
2408 while (expect_true ( 3557 while (expect_true (
2409 activecnt 3558 activecnt
2410 && !loop_done 3559 && !loop_done
2411 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3560 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2412 )); 3561 ));
2413 3562
2414 if (loop_done == EVUNLOOP_ONE) 3563 if (loop_done == EVBREAK_ONE)
2415 loop_done = EVUNLOOP_CANCEL; 3564 loop_done = EVBREAK_CANCEL;
2416 3565
2417#if EV_FEATURE_API 3566#if EV_FEATURE_API
2418 --loop_depth; 3567 --loop_depth;
2419#endif 3568#endif
3569
3570 return activecnt;
2420} 3571}
2421 3572
2422void 3573void
2423ev_unloop (EV_P_ int how) 3574ev_break (EV_P_ int how) EV_THROW
2424{ 3575{
2425 loop_done = how; 3576 loop_done = how;
2426} 3577}
2427 3578
2428void 3579void
2429ev_ref (EV_P) 3580ev_ref (EV_P) EV_THROW
2430{ 3581{
2431 ++activecnt; 3582 ++activecnt;
2432} 3583}
2433 3584
2434void 3585void
2435ev_unref (EV_P) 3586ev_unref (EV_P) EV_THROW
2436{ 3587{
2437 --activecnt; 3588 --activecnt;
2438} 3589}
2439 3590
2440void 3591void
2441ev_now_update (EV_P) 3592ev_now_update (EV_P) EV_THROW
2442{ 3593{
2443 time_update (EV_A_ 1e100); 3594 time_update (EV_A_ 1e100);
2444} 3595}
2445 3596
2446void 3597void
2447ev_suspend (EV_P) 3598ev_suspend (EV_P) EV_THROW
2448{ 3599{
2449 ev_now_update (EV_A); 3600 ev_now_update (EV_A);
2450} 3601}
2451 3602
2452void 3603void
2453ev_resume (EV_P) 3604ev_resume (EV_P) EV_THROW
2454{ 3605{
2455 ev_tstamp mn_prev = mn_now; 3606 ev_tstamp mn_prev = mn_now;
2456 3607
2457 ev_now_update (EV_A); 3608 ev_now_update (EV_A);
2458 timers_reschedule (EV_A_ mn_now - mn_prev); 3609 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2497 w->pending = 0; 3648 w->pending = 0;
2498 } 3649 }
2499} 3650}
2500 3651
2501int 3652int
2502ev_clear_pending (EV_P_ void *w) 3653ev_clear_pending (EV_P_ void *w) EV_THROW
2503{ 3654{
2504 W w_ = (W)w; 3655 W w_ = (W)w;
2505 int pending = w_->pending; 3656 int pending = w_->pending;
2506 3657
2507 if (expect_true (pending)) 3658 if (expect_true (pending))
… …
2540} 3691}
2541 3692
2542/*****************************************************************************/ 3693/*****************************************************************************/
2543 3694
2544void noinline 3695void noinline
2545ev_io_start (EV_P_ ev_io *w) 3696ev_io_start (EV_P_ ev_io *w) EV_THROW
2546{ 3697{
2547 int fd = w->fd; 3698 int fd = w->fd;
2548 3699
2549 if (expect_false (ev_is_active (w))) 3700 if (expect_false (ev_is_active (w)))
2550 return; 3701 return;
… …
2556 3707
2557 ev_start (EV_A_ (W)w, 1); 3708 ev_start (EV_A_ (W)w, 1);
2558 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3709 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2559 wlist_add (&anfds[fd].head, (WL)w); 3710 wlist_add (&anfds[fd].head, (WL)w);
2560 3711
3712 /* common bug, apparently */
3713 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3714
2561 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3715 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2562 w->events &= ~EV__IOFDSET; 3716 w->events &= ~EV__IOFDSET;
2563 3717
2564 EV_FREQUENT_CHECK; 3718 EV_FREQUENT_CHECK;
2565} 3719}
2566 3720
2567void noinline 3721void noinline
2568ev_io_stop (EV_P_ ev_io *w) 3722ev_io_stop (EV_P_ ev_io *w) EV_THROW
2569{ 3723{
2570 clear_pending (EV_A_ (W)w); 3724 clear_pending (EV_A_ (W)w);
2571 if (expect_false (!ev_is_active (w))) 3725 if (expect_false (!ev_is_active (w)))
2572 return; 3726 return;
2573 3727
… …
2576 EV_FREQUENT_CHECK; 3730 EV_FREQUENT_CHECK;
2577 3731
2578 wlist_del (&anfds[w->fd].head, (WL)w); 3732 wlist_del (&anfds[w->fd].head, (WL)w);
2579 ev_stop (EV_A_ (W)w); 3733 ev_stop (EV_A_ (W)w);
2580 3734
2581 fd_change (EV_A_ w->fd, 1); 3735 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2582 3736
2583 EV_FREQUENT_CHECK; 3737 EV_FREQUENT_CHECK;
2584} 3738}
2585 3739
2586void noinline 3740void noinline
2587ev_timer_start (EV_P_ ev_timer *w) 3741ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2588{ 3742{
2589 if (expect_false (ev_is_active (w))) 3743 if (expect_false (ev_is_active (w)))
2590 return; 3744 return;
2591 3745
2592 ev_at (w) += mn_now; 3746 ev_at (w) += mn_now;
… …
2606 3760
2607 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3761 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2608} 3762}
2609 3763
2610void noinline 3764void noinline
2611ev_timer_stop (EV_P_ ev_timer *w) 3765ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2612{ 3766{
2613 clear_pending (EV_A_ (W)w); 3767 clear_pending (EV_A_ (W)w);
2614 if (expect_false (!ev_is_active (w))) 3768 if (expect_false (!ev_is_active (w)))
2615 return; 3769 return;
2616 3770
… …
2636 3790
2637 EV_FREQUENT_CHECK; 3791 EV_FREQUENT_CHECK;
2638} 3792}
2639 3793
2640void noinline 3794void noinline
2641ev_timer_again (EV_P_ ev_timer *w) 3795ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2642{ 3796{
2643 EV_FREQUENT_CHECK; 3797 EV_FREQUENT_CHECK;
3798
3799 clear_pending (EV_A_ (W)w);
2644 3800
2645 if (ev_is_active (w)) 3801 if (ev_is_active (w))
2646 { 3802 {
2647 if (w->repeat) 3803 if (w->repeat)
2648 { 3804 {
… …
2661 3817
2662 EV_FREQUENT_CHECK; 3818 EV_FREQUENT_CHECK;
2663} 3819}
2664 3820
2665ev_tstamp 3821ev_tstamp
2666ev_timer_remaining (EV_P_ ev_timer *w) 3822ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
2667{ 3823{
2668 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3824 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2669} 3825}
2670 3826
2671#if EV_PERIODIC_ENABLE 3827#if EV_PERIODIC_ENABLE
2672void noinline 3828void noinline
2673ev_periodic_start (EV_P_ ev_periodic *w) 3829ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2674{ 3830{
2675 if (expect_false (ev_is_active (w))) 3831 if (expect_false (ev_is_active (w)))
2676 return; 3832 return;
2677 3833
2678 if (w->reschedule_cb) 3834 if (w->reschedule_cb)
2679 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3835 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2680 else if (w->interval) 3836 else if (w->interval)
2681 { 3837 {
2682 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3838 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 */ 3839 periodic_recalc (EV_A_ w);
2684 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2685 } 3840 }
2686 else 3841 else
2687 ev_at (w) = w->offset; 3842 ev_at (w) = w->offset;
2688 3843
2689 EV_FREQUENT_CHECK; 3844 EV_FREQUENT_CHECK;
… …
2699 3854
2700 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3855 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2701} 3856}
2702 3857
2703void noinline 3858void noinline
2704ev_periodic_stop (EV_P_ ev_periodic *w) 3859ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2705{ 3860{
2706 clear_pending (EV_A_ (W)w); 3861 clear_pending (EV_A_ (W)w);
2707 if (expect_false (!ev_is_active (w))) 3862 if (expect_false (!ev_is_active (w)))
2708 return; 3863 return;
2709 3864
… …
2727 3882
2728 EV_FREQUENT_CHECK; 3883 EV_FREQUENT_CHECK;
2729} 3884}
2730 3885
2731void noinline 3886void noinline
2732ev_periodic_again (EV_P_ ev_periodic *w) 3887ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2733{ 3888{
2734 /* TODO: use adjustheap and recalculation */ 3889 /* TODO: use adjustheap and recalculation */
2735 ev_periodic_stop (EV_A_ w); 3890 ev_periodic_stop (EV_A_ w);
2736 ev_periodic_start (EV_A_ w); 3891 ev_periodic_start (EV_A_ w);
2737} 3892}
… …
2742#endif 3897#endif
2743 3898
2744#if EV_SIGNAL_ENABLE 3899#if EV_SIGNAL_ENABLE
2745 3900
2746void noinline 3901void noinline
2747ev_signal_start (EV_P_ ev_signal *w) 3902ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2748{ 3903{
2749 if (expect_false (ev_is_active (w))) 3904 if (expect_false (ev_is_active (w)))
2750 return; 3905 return;
2751 3906
2752 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 3907 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
… …
2754#if EV_MULTIPLICITY 3909#if EV_MULTIPLICITY
2755 assert (("libev: a signal must not be attached to two different loops", 3910 assert (("libev: a signal must not be attached to two different loops",
2756 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 3911 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2757 3912
2758 signals [w->signum - 1].loop = EV_A; 3913 signals [w->signum - 1].loop = EV_A;
3914 ECB_MEMORY_FENCE_RELEASE;
2759#endif 3915#endif
2760 3916
2761 EV_FREQUENT_CHECK; 3917 EV_FREQUENT_CHECK;
2762 3918
2763#if EV_USE_SIGNALFD 3919#if EV_USE_SIGNALFD
… …
2810 sa.sa_handler = ev_sighandler; 3966 sa.sa_handler = ev_sighandler;
2811 sigfillset (&sa.sa_mask); 3967 sigfillset (&sa.sa_mask);
2812 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3968 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2813 sigaction (w->signum, &sa, 0); 3969 sigaction (w->signum, &sa, 0);
2814 3970
3971 if (origflags & EVFLAG_NOSIGMASK)
3972 {
2815 sigemptyset (&sa.sa_mask); 3973 sigemptyset (&sa.sa_mask);
2816 sigaddset (&sa.sa_mask, w->signum); 3974 sigaddset (&sa.sa_mask, w->signum);
2817 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 3975 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3976 }
2818#endif 3977#endif
2819 } 3978 }
2820 3979
2821 EV_FREQUENT_CHECK; 3980 EV_FREQUENT_CHECK;
2822} 3981}
2823 3982
2824void noinline 3983void noinline
2825ev_signal_stop (EV_P_ ev_signal *w) 3984ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2826{ 3985{
2827 clear_pending (EV_A_ (W)w); 3986 clear_pending (EV_A_ (W)w);
2828 if (expect_false (!ev_is_active (w))) 3987 if (expect_false (!ev_is_active (w)))
2829 return; 3988 return;
2830 3989
… …
2861#endif 4020#endif
2862 4021
2863#if EV_CHILD_ENABLE 4022#if EV_CHILD_ENABLE
2864 4023
2865void 4024void
2866ev_child_start (EV_P_ ev_child *w) 4025ev_child_start (EV_P_ ev_child *w) EV_THROW
2867{ 4026{
2868#if EV_MULTIPLICITY 4027#if EV_MULTIPLICITY
2869 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4028 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2870#endif 4029#endif
2871 if (expect_false (ev_is_active (w))) 4030 if (expect_false (ev_is_active (w)))
… …
2878 4037
2879 EV_FREQUENT_CHECK; 4038 EV_FREQUENT_CHECK;
2880} 4039}
2881 4040
2882void 4041void
2883ev_child_stop (EV_P_ ev_child *w) 4042ev_child_stop (EV_P_ ev_child *w) EV_THROW
2884{ 4043{
2885 clear_pending (EV_A_ (W)w); 4044 clear_pending (EV_A_ (W)w);
2886 if (expect_false (!ev_is_active (w))) 4045 if (expect_false (!ev_is_active (w)))
2887 return; 4046 return;
2888 4047
… …
2915# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4074# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2916 4075
2917static void noinline 4076static void noinline
2918infy_add (EV_P_ ev_stat *w) 4077infy_add (EV_P_ ev_stat *w)
2919{ 4078{
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); 4079 w->wd = inotify_add_watch (fs_fd, w->path,
4080 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4081 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4082 | IN_DONT_FOLLOW | IN_MASK_ADD);
2921 4083
2922 if (w->wd >= 0) 4084 if (w->wd >= 0)
2923 { 4085 {
2924 struct statfs sfs; 4086 struct statfs sfs;
2925 4087
… …
2929 4091
2930 if (!fs_2625) 4092 if (!fs_2625)
2931 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4093 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2932 else if (!statfs (w->path, &sfs) 4094 else if (!statfs (w->path, &sfs)
2933 && (sfs.f_type == 0x1373 /* devfs */ 4095 && (sfs.f_type == 0x1373 /* devfs */
4096 || sfs.f_type == 0x4006 /* fat */
4097 || sfs.f_type == 0x4d44 /* msdos */
2934 || sfs.f_type == 0xEF53 /* ext2/3 */ 4098 || sfs.f_type == 0xEF53 /* ext2/3 */
4099 || sfs.f_type == 0x72b6 /* jffs2 */
4100 || sfs.f_type == 0x858458f6 /* ramfs */
4101 || sfs.f_type == 0x5346544e /* ntfs */
2935 || sfs.f_type == 0x3153464a /* jfs */ 4102 || sfs.f_type == 0x3153464a /* jfs */
4103 || sfs.f_type == 0x9123683e /* btrfs */
2936 || sfs.f_type == 0x52654973 /* reiser3 */ 4104 || sfs.f_type == 0x52654973 /* reiser3 */
2937 || sfs.f_type == 0x01021994 /* tempfs */ 4105 || sfs.f_type == 0x01021994 /* tmpfs */
2938 || sfs.f_type == 0x58465342 /* xfs */)) 4106 || sfs.f_type == 0x58465342 /* xfs */))
2939 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4107 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
2940 else 4108 else
2941 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4109 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2942 } 4110 }
… …
2963 if (!pend || pend == path) 4131 if (!pend || pend == path)
2964 break; 4132 break;
2965 4133
2966 *pend = 0; 4134 *pend = 0;
2967 w->wd = inotify_add_watch (fs_fd, path, mask); 4135 w->wd = inotify_add_watch (fs_fd, path, mask);
2968 } 4136 }
2969 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 4137 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2970 } 4138 }
2971 } 4139 }
2972 4140
2973 if (w->wd >= 0) 4141 if (w->wd >= 0)
… …
3040 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4208 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3041 ofs += sizeof (struct inotify_event) + ev->len; 4209 ofs += sizeof (struct inotify_event) + ev->len;
3042 } 4210 }
3043} 4211}
3044 4212
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 4213inline_size void ecb_cold
3078ev_check_2625 (EV_P) 4214ev_check_2625 (EV_P)
3079{ 4215{
3080 /* kernels < 2.6.25 are borked 4216 /* kernels < 2.6.25 are borked
3081 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4217 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3082 */ 4218 */
… …
3087} 4223}
3088 4224
3089inline_size int 4225inline_size int
3090infy_newfd (void) 4226infy_newfd (void)
3091{ 4227{
3092#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4228#if defined IN_CLOEXEC && defined IN_NONBLOCK
3093 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4229 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3094 if (fd >= 0) 4230 if (fd >= 0)
3095 return fd; 4231 return fd;
3096#endif 4232#endif
3097 return inotify_init (); 4233 return inotify_init ();
… …
3172#else 4308#else
3173# define EV_LSTAT(p,b) lstat (p, b) 4309# define EV_LSTAT(p,b) lstat (p, b)
3174#endif 4310#endif
3175 4311
3176void 4312void
3177ev_stat_stat (EV_P_ ev_stat *w) 4313ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
3178{ 4314{
3179 if (lstat (w->path, &w->attr) < 0) 4315 if (lstat (w->path, &w->attr) < 0)
3180 w->attr.st_nlink = 0; 4316 w->attr.st_nlink = 0;
3181 else if (!w->attr.st_nlink) 4317 else if (!w->attr.st_nlink)
3182 w->attr.st_nlink = 1; 4318 w->attr.st_nlink = 1;
… …
3221 ev_feed_event (EV_A_ w, EV_STAT); 4357 ev_feed_event (EV_A_ w, EV_STAT);
3222 } 4358 }
3223} 4359}
3224 4360
3225void 4361void
3226ev_stat_start (EV_P_ ev_stat *w) 4362ev_stat_start (EV_P_ ev_stat *w) EV_THROW
3227{ 4363{
3228 if (expect_false (ev_is_active (w))) 4364 if (expect_false (ev_is_active (w)))
3229 return; 4365 return;
3230 4366
3231 ev_stat_stat (EV_A_ w); 4367 ev_stat_stat (EV_A_ w);
… …
3252 4388
3253 EV_FREQUENT_CHECK; 4389 EV_FREQUENT_CHECK;
3254} 4390}
3255 4391
3256void 4392void
3257ev_stat_stop (EV_P_ ev_stat *w) 4393ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
3258{ 4394{
3259 clear_pending (EV_A_ (W)w); 4395 clear_pending (EV_A_ (W)w);
3260 if (expect_false (!ev_is_active (w))) 4396 if (expect_false (!ev_is_active (w)))
3261 return; 4397 return;
3262 4398
… …
3278} 4414}
3279#endif 4415#endif
3280 4416
3281#if EV_IDLE_ENABLE 4417#if EV_IDLE_ENABLE
3282void 4418void
3283ev_idle_start (EV_P_ ev_idle *w) 4419ev_idle_start (EV_P_ ev_idle *w) EV_THROW
3284{ 4420{
3285 if (expect_false (ev_is_active (w))) 4421 if (expect_false (ev_is_active (w)))
3286 return; 4422 return;
3287 4423
3288 pri_adjust (EV_A_ (W)w); 4424 pri_adjust (EV_A_ (W)w);
… …
3301 4437
3302 EV_FREQUENT_CHECK; 4438 EV_FREQUENT_CHECK;
3303} 4439}
3304 4440
3305void 4441void
3306ev_idle_stop (EV_P_ ev_idle *w) 4442ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
3307{ 4443{
3308 clear_pending (EV_A_ (W)w); 4444 clear_pending (EV_A_ (W)w);
3309 if (expect_false (!ev_is_active (w))) 4445 if (expect_false (!ev_is_active (w)))
3310 return; 4446 return;
3311 4447
… …
3325} 4461}
3326#endif 4462#endif
3327 4463
3328#if EV_PREPARE_ENABLE 4464#if EV_PREPARE_ENABLE
3329void 4465void
3330ev_prepare_start (EV_P_ ev_prepare *w) 4466ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3331{ 4467{
3332 if (expect_false (ev_is_active (w))) 4468 if (expect_false (ev_is_active (w)))
3333 return; 4469 return;
3334 4470
3335 EV_FREQUENT_CHECK; 4471 EV_FREQUENT_CHECK;
… …
3340 4476
3341 EV_FREQUENT_CHECK; 4477 EV_FREQUENT_CHECK;
3342} 4478}
3343 4479
3344void 4480void
3345ev_prepare_stop (EV_P_ ev_prepare *w) 4481ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3346{ 4482{
3347 clear_pending (EV_A_ (W)w); 4483 clear_pending (EV_A_ (W)w);
3348 if (expect_false (!ev_is_active (w))) 4484 if (expect_false (!ev_is_active (w)))
3349 return; 4485 return;
3350 4486
… …
3363} 4499}
3364#endif 4500#endif
3365 4501
3366#if EV_CHECK_ENABLE 4502#if EV_CHECK_ENABLE
3367void 4503void
3368ev_check_start (EV_P_ ev_check *w) 4504ev_check_start (EV_P_ ev_check *w) EV_THROW
3369{ 4505{
3370 if (expect_false (ev_is_active (w))) 4506 if (expect_false (ev_is_active (w)))
3371 return; 4507 return;
3372 4508
3373 EV_FREQUENT_CHECK; 4509 EV_FREQUENT_CHECK;
… …
3378 4514
3379 EV_FREQUENT_CHECK; 4515 EV_FREQUENT_CHECK;
3380} 4516}
3381 4517
3382void 4518void
3383ev_check_stop (EV_P_ ev_check *w) 4519ev_check_stop (EV_P_ ev_check *w) EV_THROW
3384{ 4520{
3385 clear_pending (EV_A_ (W)w); 4521 clear_pending (EV_A_ (W)w);
3386 if (expect_false (!ev_is_active (w))) 4522 if (expect_false (!ev_is_active (w)))
3387 return; 4523 return;
3388 4524
… …
3401} 4537}
3402#endif 4538#endif
3403 4539
3404#if EV_EMBED_ENABLE 4540#if EV_EMBED_ENABLE
3405void noinline 4541void noinline
3406ev_embed_sweep (EV_P_ ev_embed *w) 4542ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3407{ 4543{
3408 ev_loop (w->other, EVLOOP_NONBLOCK); 4544 ev_run (w->other, EVRUN_NOWAIT);
3409} 4545}
3410 4546
3411static void 4547static void
3412embed_io_cb (EV_P_ ev_io *io, int revents) 4548embed_io_cb (EV_P_ ev_io *io, int revents)
3413{ 4549{
3414 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4550 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3415 4551
3416 if (ev_cb (w)) 4552 if (ev_cb (w))
3417 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4553 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3418 else 4554 else
3419 ev_loop (w->other, EVLOOP_NONBLOCK); 4555 ev_run (w->other, EVRUN_NOWAIT);
3420} 4556}
3421 4557
3422static void 4558static void
3423embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4559embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3424{ 4560{
… …
3428 EV_P = w->other; 4564 EV_P = w->other;
3429 4565
3430 while (fdchangecnt) 4566 while (fdchangecnt)
3431 { 4567 {
3432 fd_reify (EV_A); 4568 fd_reify (EV_A);
3433 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4569 ev_run (EV_A_ EVRUN_NOWAIT);
3434 } 4570 }
3435 } 4571 }
3436} 4572}
3437 4573
3438static void 4574static void
… …
3444 4580
3445 { 4581 {
3446 EV_P = w->other; 4582 EV_P = w->other;
3447 4583
3448 ev_loop_fork (EV_A); 4584 ev_loop_fork (EV_A);
3449 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4585 ev_run (EV_A_ EVRUN_NOWAIT);
3450 } 4586 }
3451 4587
3452 ev_embed_start (EV_A_ w); 4588 ev_embed_start (EV_A_ w);
3453} 4589}
3454 4590
… …
3459 ev_idle_stop (EV_A_ idle); 4595 ev_idle_stop (EV_A_ idle);
3460} 4596}
3461#endif 4597#endif
3462 4598
3463void 4599void
3464ev_embed_start (EV_P_ ev_embed *w) 4600ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3465{ 4601{
3466 if (expect_false (ev_is_active (w))) 4602 if (expect_false (ev_is_active (w)))
3467 return; 4603 return;
3468 4604
3469 { 4605 {
… …
3490 4626
3491 EV_FREQUENT_CHECK; 4627 EV_FREQUENT_CHECK;
3492} 4628}
3493 4629
3494void 4630void
3495ev_embed_stop (EV_P_ ev_embed *w) 4631ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3496{ 4632{
3497 clear_pending (EV_A_ (W)w); 4633 clear_pending (EV_A_ (W)w);
3498 if (expect_false (!ev_is_active (w))) 4634 if (expect_false (!ev_is_active (w)))
3499 return; 4635 return;
3500 4636
… …
3510} 4646}
3511#endif 4647#endif
3512 4648
3513#if EV_FORK_ENABLE 4649#if EV_FORK_ENABLE
3514void 4650void
3515ev_fork_start (EV_P_ ev_fork *w) 4651ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3516{ 4652{
3517 if (expect_false (ev_is_active (w))) 4653 if (expect_false (ev_is_active (w)))
3518 return; 4654 return;
3519 4655
3520 EV_FREQUENT_CHECK; 4656 EV_FREQUENT_CHECK;
… …
3525 4661
3526 EV_FREQUENT_CHECK; 4662 EV_FREQUENT_CHECK;
3527} 4663}
3528 4664
3529void 4665void
3530ev_fork_stop (EV_P_ ev_fork *w) 4666ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3531{ 4667{
3532 clear_pending (EV_A_ (W)w); 4668 clear_pending (EV_A_ (W)w);
3533 if (expect_false (!ev_is_active (w))) 4669 if (expect_false (!ev_is_active (w)))
3534 return; 4670 return;
3535 4671
… …
3546 4682
3547 EV_FREQUENT_CHECK; 4683 EV_FREQUENT_CHECK;
3548} 4684}
3549#endif 4685#endif
3550 4686
4687#if EV_CLEANUP_ENABLE
4688void
4689ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
4690{
4691 if (expect_false (ev_is_active (w)))
4692 return;
4693
4694 EV_FREQUENT_CHECK;
4695
4696 ev_start (EV_A_ (W)w, ++cleanupcnt);
4697 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4698 cleanups [cleanupcnt - 1] = w;
4699
4700 /* cleanup watchers should never keep a refcount on the loop */
4701 ev_unref (EV_A);
4702 EV_FREQUENT_CHECK;
4703}
4704
4705void
4706ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4707{
4708 clear_pending (EV_A_ (W)w);
4709 if (expect_false (!ev_is_active (w)))
4710 return;
4711
4712 EV_FREQUENT_CHECK;
4713 ev_ref (EV_A);
4714
4715 {
4716 int active = ev_active (w);
4717
4718 cleanups [active - 1] = cleanups [--cleanupcnt];
4719 ev_active (cleanups [active - 1]) = active;
4720 }
4721
4722 ev_stop (EV_A_ (W)w);
4723
4724 EV_FREQUENT_CHECK;
4725}
4726#endif
4727
3551#if EV_ASYNC_ENABLE 4728#if EV_ASYNC_ENABLE
3552void 4729void
3553ev_async_start (EV_P_ ev_async *w) 4730ev_async_start (EV_P_ ev_async *w) EV_THROW
3554{ 4731{
3555 if (expect_false (ev_is_active (w))) 4732 if (expect_false (ev_is_active (w)))
3556 return; 4733 return;
4734
4735 w->sent = 0;
3557 4736
3558 evpipe_init (EV_A); 4737 evpipe_init (EV_A);
3559 4738
3560 EV_FREQUENT_CHECK; 4739 EV_FREQUENT_CHECK;
3561 4740
… …
3565 4744
3566 EV_FREQUENT_CHECK; 4745 EV_FREQUENT_CHECK;
3567} 4746}
3568 4747
3569void 4748void
3570ev_async_stop (EV_P_ ev_async *w) 4749ev_async_stop (EV_P_ ev_async *w) EV_THROW
3571{ 4750{
3572 clear_pending (EV_A_ (W)w); 4751 clear_pending (EV_A_ (W)w);
3573 if (expect_false (!ev_is_active (w))) 4752 if (expect_false (!ev_is_active (w)))
3574 return; 4753 return;
3575 4754
… …
3586 4765
3587 EV_FREQUENT_CHECK; 4766 EV_FREQUENT_CHECK;
3588} 4767}
3589 4768
3590void 4769void
3591ev_async_send (EV_P_ ev_async *w) 4770ev_async_send (EV_P_ ev_async *w) EV_THROW
3592{ 4771{
3593 w->sent = 1; 4772 w->sent = 1;
3594 evpipe_write (EV_A_ &async_pending); 4773 evpipe_write (EV_A_ &async_pending);
3595} 4774}
3596#endif 4775#endif
… …
3633 4812
3634 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4813 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3635} 4814}
3636 4815
3637void 4816void
3638ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4817ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3639{ 4818{
3640 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4819 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3641 4820
3642 if (expect_false (!once)) 4821 if (expect_false (!once))
3643 { 4822 {
… …
3664} 4843}
3665 4844
3666/*****************************************************************************/ 4845/*****************************************************************************/
3667 4846
3668#if EV_WALK_ENABLE 4847#if EV_WALK_ENABLE
3669void 4848void ecb_cold
3670ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4849ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
3671{ 4850{
3672 int i, j; 4851 int i, j;
3673 ev_watcher_list *wl, *wn; 4852 ev_watcher_list *wl, *wn;
3674 4853
3675 if (types & (EV_IO | EV_EMBED)) 4854 if (types & (EV_IO | EV_EMBED))
… …
3718 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4897 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3719#endif 4898#endif
3720 4899
3721#if EV_IDLE_ENABLE 4900#if EV_IDLE_ENABLE
3722 if (types & EV_IDLE) 4901 if (types & EV_IDLE)
3723 for (j = NUMPRI; i--; ) 4902 for (j = NUMPRI; j--; )
3724 for (i = idlecnt [j]; i--; ) 4903 for (i = idlecnt [j]; i--; )
3725 cb (EV_A_ EV_IDLE, idles [j][i]); 4904 cb (EV_A_ EV_IDLE, idles [j][i]);
3726#endif 4905#endif
3727 4906
3728#if EV_FORK_ENABLE 4907#if EV_FORK_ENABLE
… …
3781 4960
3782#if EV_MULTIPLICITY 4961#if EV_MULTIPLICITY
3783 #include "ev_wrap.h" 4962 #include "ev_wrap.h"
3784#endif 4963#endif
3785 4964
3786#ifdef __cplusplus
3787}
3788#endif
3789

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