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

Comparing libev/ev.c (file contents):
Revision 1.297 by root, Fri Jul 10 00:36:21 2009 UTC vs.
Revision 1.518 by root, Fri Dec 27 16:12:37 2019 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007-2019 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
10 * 1. Redistributions of source code must retain the above copyright notice, 10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer. 11 * this list of conditions and the following disclaimer.
12 * 12 *
13 * 2. Redistributions in binary form must reproduce the above copyright 13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the 14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution. 15 * documentation and/or other materials provided with the distribution.
16 * 16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- 18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO 19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- 20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
… …
35 * and other provisions required by the GPL. If you do not delete the 35 * and other provisions required by the GPL. If you do not delete the
36 * provisions above, a recipient may use your version of this file under 36 * provisions above, a recipient may use your version of this file under
37 * either the BSD or the GPL. 37 * either the BSD or the GPL.
38 */ 38 */
39 39
40#ifdef __cplusplus
41extern "C" {
42#endif
43
44/* this big block deduces configuration from config.h */ 40/* this big block deduces configuration from config.h */
45#ifndef EV_STANDALONE 41#ifndef EV_STANDALONE
46# ifdef EV_CONFIG_H 42# ifdef EV_CONFIG_H
47# include EV_CONFIG_H 43# include EV_CONFIG_H
48# else 44# else
49# include "config.h" 45# include "config.h"
46# endif
47
48# if HAVE_FLOOR
49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1
51# endif
50# endif 52# endif
51 53
52# if HAVE_CLOCK_SYSCALL 54# if HAVE_CLOCK_SYSCALL
53# ifndef EV_USE_CLOCK_SYSCALL 55# ifndef EV_USE_CLOCK_SYSCALL
54# define EV_USE_CLOCK_SYSCALL 1 56# define EV_USE_CLOCK_SYSCALL 1
… …
57# endif 59# endif
58# ifndef EV_USE_MONOTONIC 60# ifndef EV_USE_MONOTONIC
59# define EV_USE_MONOTONIC 1 61# define EV_USE_MONOTONIC 1
60# endif 62# endif
61# endif 63# endif
62# elif !defined(EV_USE_CLOCK_SYSCALL) 64# elif !defined EV_USE_CLOCK_SYSCALL
63# define EV_USE_CLOCK_SYSCALL 0 65# define EV_USE_CLOCK_SYSCALL 0
64# endif 66# endif
65 67
66# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
67# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
… …
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 1 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 104# define EV_USE_POLL EV_FEATURE_BACKENDS
92# define EV_USE_SELECT 1
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 1
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
108# define EV_USE_EPOLL 1 112# ifndef EV_USE_EPOLL
109# else 113# define EV_USE_EPOLL EV_FEATURE_BACKENDS
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 120# if HAVE_LINUX_AIO_ABI_H
115# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 121# ifndef EV_USE_LINUXAIO
116# define EV_USE_KQUEUE 1 122# define EV_USE_LINUXAIO 0 /* was: EV_FEATURE_BACKENDS, always off by default */
117# else
118# define EV_USE_KQUEUE 0
119# endif 123# endif
124# else
125# undef EV_USE_LINUXAIO
126# define EV_USE_LINUXAIO 0
120# endif 127# endif
121 128
129# if HAVE_LINUX_FS_H && HAVE_SYS_TIMERFD_H && HAVE_KERNEL_RWF_T
122# ifndef EV_USE_PORT 130# ifndef EV_USE_IOURING
123# if HAVE_PORT_H && HAVE_PORT_CREATE 131# define EV_USE_IOURING EV_FEATURE_BACKENDS
124# define EV_USE_PORT 1
125# else
126# define EV_USE_PORT 0
127# endif 132# endif
128# endif
129
130# ifndef EV_USE_INOTIFY
131# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
132# define EV_USE_INOTIFY 1
133# else 133# else
134# undef EV_USE_IOURING
134# define EV_USE_INOTIFY 0 135# define EV_USE_IOURING 0
135# endif
136# endif
137
138# ifndef EV_USE_EVENTFD
139# if HAVE_EVENTFD
140# define EV_USE_EVENTFD 1
141# else
142# define EV_USE_EVENTFD 0
143# endif
144# endif 136# endif
145 137
138# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
139# ifndef EV_USE_KQUEUE
140# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
141# endif
142# else
143# undef EV_USE_KQUEUE
144# define EV_USE_KQUEUE 0
146#endif 145# endif
146
147# if HAVE_PORT_H && HAVE_PORT_CREATE
148# ifndef EV_USE_PORT
149# define EV_USE_PORT EV_FEATURE_BACKENDS
150# endif
151# else
152# undef EV_USE_PORT
153# define EV_USE_PORT 0
154# endif
147 155
148#include <math.h> 156# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
157# ifndef EV_USE_INOTIFY
158# define EV_USE_INOTIFY EV_FEATURE_OS
159# endif
160# else
161# undef EV_USE_INOTIFY
162# define EV_USE_INOTIFY 0
163# endif
164
165# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
166# ifndef EV_USE_SIGNALFD
167# define EV_USE_SIGNALFD EV_FEATURE_OS
168# endif
169# else
170# undef EV_USE_SIGNALFD
171# define EV_USE_SIGNALFD 0
172# endif
173
174# if HAVE_EVENTFD
175# ifndef EV_USE_EVENTFD
176# define EV_USE_EVENTFD EV_FEATURE_OS
177# endif
178# else
179# undef EV_USE_EVENTFD
180# define EV_USE_EVENTFD 0
181# endif
182
183# if HAVE_SYS_TIMERFD_H
184# ifndef EV_USE_TIMERFD
185# define EV_USE_TIMERFD EV_FEATURE_OS
186# endif
187# else
188# undef EV_USE_TIMERFD
189# define EV_USE_TIMERFD 0
190# endif
191
192#endif
193
194/* OS X, in its infinite idiocy, actually HARDCODES
195 * a limit of 1024 into their select. Where people have brains,
196 * OS X engineers apparently have a vacuum. Or maybe they were
197 * ordered to have a vacuum, or they do anything for money.
198 * This might help. Or not.
199 * Note that this must be defined early, as other include files
200 * will rely on this define as well.
201 */
202#define _DARWIN_UNLIMITED_SELECT 1
203
149#include <stdlib.h> 204#include <stdlib.h>
205#include <string.h>
150#include <fcntl.h> 206#include <fcntl.h>
151#include <stddef.h> 207#include <stddef.h>
152 208
153#include <stdio.h> 209#include <stdio.h>
154 210
155#include <assert.h> 211#include <assert.h>
156#include <errno.h> 212#include <errno.h>
157#include <sys/types.h> 213#include <sys/types.h>
158#include <time.h> 214#include <time.h>
215#include <limits.h>
159 216
160#include <signal.h> 217#include <signal.h>
161 218
162#ifdef EV_H 219#ifdef EV_H
163# include EV_H 220# include EV_H
164#else 221#else
165# include "ev.h" 222# include "ev.h"
223#endif
224
225#if EV_NO_THREADS
226# undef EV_NO_SMP
227# define EV_NO_SMP 1
228# undef ECB_NO_THREADS
229# define ECB_NO_THREADS 1
230#endif
231#if EV_NO_SMP
232# undef EV_NO_SMP
233# define ECB_NO_SMP 1
166#endif 234#endif
167 235
168#ifndef _WIN32 236#ifndef _WIN32
169# include <sys/time.h> 237# include <sys/time.h>
170# include <sys/wait.h> 238# include <sys/wait.h>
171# include <unistd.h> 239# include <unistd.h>
172#else 240#else
173# include <io.h> 241# include <io.h>
174# define WIN32_LEAN_AND_MEAN 242# define WIN32_LEAN_AND_MEAN
243# include <winsock2.h>
175# include <windows.h> 244# include <windows.h>
176# ifndef EV_SELECT_IS_WINSOCKET 245# ifndef EV_SELECT_IS_WINSOCKET
177# define EV_SELECT_IS_WINSOCKET 1 246# define EV_SELECT_IS_WINSOCKET 1
178# endif 247# endif
248# undef EV_AVOID_STDIO
179#endif 249#endif
180 250
181/* this block tries to deduce configuration from header-defined symbols and defaults */ 251/* this block tries to deduce configuration from header-defined symbols and defaults */
182 252
253/* try to deduce the maximum number of signals on this platform */
254#if defined EV_NSIG
255/* use what's provided */
256#elif defined NSIG
257# define EV_NSIG (NSIG)
258#elif defined _NSIG
259# define EV_NSIG (_NSIG)
260#elif defined SIGMAX
261# define EV_NSIG (SIGMAX+1)
262#elif defined SIG_MAX
263# define EV_NSIG (SIG_MAX+1)
264#elif defined _SIG_MAX
265# define EV_NSIG (_SIG_MAX+1)
266#elif defined MAXSIG
267# define EV_NSIG (MAXSIG+1)
268#elif defined MAX_SIG
269# define EV_NSIG (MAX_SIG+1)
270#elif defined SIGARRAYSIZE
271# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
272#elif defined _sys_nsig
273# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
274#else
275# define EV_NSIG (8 * sizeof (sigset_t) + 1)
276#endif
277
278#ifndef EV_USE_FLOOR
279# define EV_USE_FLOOR 0
280#endif
281
183#ifndef EV_USE_CLOCK_SYSCALL 282#ifndef EV_USE_CLOCK_SYSCALL
184# if __linux && __GLIBC__ >= 2 283# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
185# define EV_USE_CLOCK_SYSCALL 1 284# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
186# else 285# else
187# define EV_USE_CLOCK_SYSCALL 0 286# define EV_USE_CLOCK_SYSCALL 0
188# endif 287# endif
189#endif 288#endif
190 289
290#if !(_POSIX_TIMERS > 0)
291# ifndef EV_USE_MONOTONIC
292# define EV_USE_MONOTONIC 0
293# endif
294# ifndef EV_USE_REALTIME
295# define EV_USE_REALTIME 0
296# endif
297#endif
298
191#ifndef EV_USE_MONOTONIC 299#ifndef EV_USE_MONOTONIC
192# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 300# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
193# define EV_USE_MONOTONIC 1 301# define EV_USE_MONOTONIC EV_FEATURE_OS
194# else 302# else
195# define EV_USE_MONOTONIC 0 303# define EV_USE_MONOTONIC 0
196# endif 304# endif
197#endif 305#endif
198 306
… …
200# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 308# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
201#endif 309#endif
202 310
203#ifndef EV_USE_NANOSLEEP 311#ifndef EV_USE_NANOSLEEP
204# if _POSIX_C_SOURCE >= 199309L 312# if _POSIX_C_SOURCE >= 199309L
205# define EV_USE_NANOSLEEP 1 313# define EV_USE_NANOSLEEP EV_FEATURE_OS
206# else 314# else
207# define EV_USE_NANOSLEEP 0 315# define EV_USE_NANOSLEEP 0
208# endif 316# endif
209#endif 317#endif
210 318
211#ifndef EV_USE_SELECT 319#ifndef EV_USE_SELECT
212# define EV_USE_SELECT 1 320# define EV_USE_SELECT EV_FEATURE_BACKENDS
213#endif 321#endif
214 322
215#ifndef EV_USE_POLL 323#ifndef EV_USE_POLL
216# ifdef _WIN32 324# ifdef _WIN32
217# define EV_USE_POLL 0 325# define EV_USE_POLL 0
218# else 326# else
219# define EV_USE_POLL 1 327# define EV_USE_POLL EV_FEATURE_BACKENDS
220# endif 328# endif
221#endif 329#endif
222 330
223#ifndef EV_USE_EPOLL 331#ifndef EV_USE_EPOLL
224# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 332# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
225# define EV_USE_EPOLL 1 333# define EV_USE_EPOLL EV_FEATURE_BACKENDS
226# else 334# else
227# define EV_USE_EPOLL 0 335# define EV_USE_EPOLL 0
228# endif 336# endif
229#endif 337#endif
230 338
… …
234 342
235#ifndef EV_USE_PORT 343#ifndef EV_USE_PORT
236# define EV_USE_PORT 0 344# define EV_USE_PORT 0
237#endif 345#endif
238 346
347#ifndef EV_USE_LINUXAIO
348# if __linux /* libev currently assumes linux/aio_abi.h is always available on linux */
349# define EV_USE_LINUXAIO 0 /* was: 1, always off by default */
350# else
351# define EV_USE_LINUXAIO 0
352# endif
353#endif
354
355#ifndef EV_USE_IOURING
356# if __linux /* later checks might disable again */
357# define EV_USE_IOURING 1
358# else
359# define EV_USE_IOURING 0
360# endif
361#endif
362
239#ifndef EV_USE_INOTIFY 363#ifndef EV_USE_INOTIFY
240# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 364# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
241# define EV_USE_INOTIFY 1 365# define EV_USE_INOTIFY EV_FEATURE_OS
242# else 366# else
243# define EV_USE_INOTIFY 0 367# define EV_USE_INOTIFY 0
244# endif 368# endif
245#endif 369#endif
246 370
247#ifndef EV_PID_HASHSIZE 371#ifndef EV_PID_HASHSIZE
248# if EV_MINIMAL 372# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
249# define EV_PID_HASHSIZE 1
250# else
251# define EV_PID_HASHSIZE 16
252# endif
253#endif 373#endif
254 374
255#ifndef EV_INOTIFY_HASHSIZE 375#ifndef EV_INOTIFY_HASHSIZE
256# if EV_MINIMAL 376# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
257# define EV_INOTIFY_HASHSIZE 1
258# else
259# define EV_INOTIFY_HASHSIZE 16
260# endif
261#endif 377#endif
262 378
263#ifndef EV_USE_EVENTFD 379#ifndef EV_USE_EVENTFD
264# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 380# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
265# define EV_USE_EVENTFD 1 381# define EV_USE_EVENTFD EV_FEATURE_OS
266# else 382# else
267# define EV_USE_EVENTFD 0 383# define EV_USE_EVENTFD 0
384# endif
385#endif
386
387#ifndef EV_USE_SIGNALFD
388# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
389# define EV_USE_SIGNALFD EV_FEATURE_OS
390# else
391# define EV_USE_SIGNALFD 0
392# endif
393#endif
394
395#ifndef EV_USE_TIMERFD
396# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 8))
397# define EV_USE_TIMERFD EV_FEATURE_OS
398# else
399# define EV_USE_TIMERFD 0
268# endif 400# endif
269#endif 401#endif
270 402
271#if 0 /* debugging */ 403#if 0 /* debugging */
272# define EV_VERIFY 3 404# define EV_VERIFY 3
273# define EV_USE_4HEAP 1 405# define EV_USE_4HEAP 1
274# define EV_HEAP_CACHE_AT 1 406# define EV_HEAP_CACHE_AT 1
275#endif 407#endif
276 408
277#ifndef EV_VERIFY 409#ifndef EV_VERIFY
278# define EV_VERIFY !EV_MINIMAL 410# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
279#endif 411#endif
280 412
281#ifndef EV_USE_4HEAP 413#ifndef EV_USE_4HEAP
282# define EV_USE_4HEAP !EV_MINIMAL 414# define EV_USE_4HEAP EV_FEATURE_DATA
283#endif 415#endif
284 416
285#ifndef EV_HEAP_CACHE_AT 417#ifndef EV_HEAP_CACHE_AT
286# define EV_HEAP_CACHE_AT !EV_MINIMAL 418# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
419#endif
420
421#ifdef __ANDROID__
422/* supposedly, android doesn't typedef fd_mask */
423# undef EV_USE_SELECT
424# define EV_USE_SELECT 0
425/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
426# undef EV_USE_CLOCK_SYSCALL
427# define EV_USE_CLOCK_SYSCALL 0
428#endif
429
430/* aix's poll.h seems to cause lots of trouble */
431#ifdef _AIX
432/* AIX has a completely broken poll.h header */
433# undef EV_USE_POLL
434# define EV_USE_POLL 0
287#endif 435#endif
288 436
289/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 437/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
290/* which makes programs even slower. might work on other unices, too. */ 438/* which makes programs even slower. might work on other unices, too. */
291#if EV_USE_CLOCK_SYSCALL 439#if EV_USE_CLOCK_SYSCALL
292# include <syscall.h> 440# include <sys/syscall.h>
293# ifdef SYS_clock_gettime 441# ifdef SYS_clock_gettime
294# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 442# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
295# undef EV_USE_MONOTONIC 443# undef EV_USE_MONOTONIC
296# define EV_USE_MONOTONIC 1 444# define EV_USE_MONOTONIC 1
445# define EV_NEED_SYSCALL 1
297# else 446# else
298# undef EV_USE_CLOCK_SYSCALL 447# undef EV_USE_CLOCK_SYSCALL
299# define EV_USE_CLOCK_SYSCALL 0 448# define EV_USE_CLOCK_SYSCALL 0
300# endif 449# endif
301#endif 450#endif
… …
315#if !EV_STAT_ENABLE 464#if !EV_STAT_ENABLE
316# undef EV_USE_INOTIFY 465# undef EV_USE_INOTIFY
317# define EV_USE_INOTIFY 0 466# define EV_USE_INOTIFY 0
318#endif 467#endif
319 468
469#if __linux && EV_USE_IOURING
470# include <linux/version.h>
471# if LINUX_VERSION_CODE < KERNEL_VERSION(4,14,0)
472# undef EV_USE_IOURING
473# define EV_USE_IOURING 0
474# endif
475#endif
476
320#if !EV_USE_NANOSLEEP 477#if !EV_USE_NANOSLEEP
321# ifndef _WIN32 478/* hp-ux has it in sys/time.h, which we unconditionally include above */
479# if !defined _WIN32 && !defined __hpux
322# include <sys/select.h> 480# include <sys/select.h>
323# endif 481# endif
324#endif 482#endif
325 483
484#if EV_USE_LINUXAIO
485# include <sys/syscall.h>
486# if SYS_io_getevents && EV_USE_EPOLL /* linuxaio backend requires epoll backend */
487# define EV_NEED_SYSCALL 1
488# else
489# undef EV_USE_LINUXAIO
490# define EV_USE_LINUXAIO 0
491# endif
492#endif
493
494#if EV_USE_IOURING
495# include <sys/syscall.h>
496# if !SYS_io_uring_setup && __linux && !__alpha
497# define SYS_io_uring_setup 425
498# define SYS_io_uring_enter 426
499# define SYS_io_uring_wregister 427
500# endif
501# if SYS_io_uring_setup && EV_USE_EPOLL /* iouring backend requires epoll backend */
502# define EV_NEED_SYSCALL 1
503# else
504# undef EV_USE_IOURING
505# define EV_USE_IOURING 0
506# endif
507#endif
508
326#if EV_USE_INOTIFY 509#if EV_USE_INOTIFY
327# include <sys/utsname.h>
328# include <sys/statfs.h> 510# include <sys/statfs.h>
329# include <sys/inotify.h> 511# include <sys/inotify.h>
330/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 512/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
331# ifndef IN_DONT_FOLLOW 513# ifndef IN_DONT_FOLLOW
332# undef EV_USE_INOTIFY 514# undef EV_USE_INOTIFY
333# define EV_USE_INOTIFY 0 515# define EV_USE_INOTIFY 0
334# endif 516# endif
335#endif 517#endif
336 518
337#if EV_SELECT_IS_WINSOCKET
338# include <winsock.h>
339#endif
340
341#if EV_USE_EVENTFD 519#if EV_USE_EVENTFD
342/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 520/* our minimum requirement is glibc 2.7 which has the stub, but not the full header */
343# include <stdint.h> 521# include <stdint.h>
344# ifdef __cplusplus 522# ifndef EFD_NONBLOCK
345extern "C" { 523# define EFD_NONBLOCK O_NONBLOCK
346# endif 524# endif
347int eventfd (unsigned int initval, int flags); 525# ifndef EFD_CLOEXEC
348# ifdef __cplusplus 526# ifdef O_CLOEXEC
349} 527# define EFD_CLOEXEC O_CLOEXEC
528# else
529# define EFD_CLOEXEC 02000000
530# endif
350# endif 531# endif
532EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
533#endif
534
535#if EV_USE_SIGNALFD
536/* our minimum requirement is glibc 2.7 which has the stub, but not the full header */
537# include <stdint.h>
538# ifndef SFD_NONBLOCK
539# define SFD_NONBLOCK O_NONBLOCK
351#endif 540# endif
541# ifndef SFD_CLOEXEC
542# ifdef O_CLOEXEC
543# define SFD_CLOEXEC O_CLOEXEC
544# else
545# define SFD_CLOEXEC 02000000
546# endif
547# endif
548EV_CPP (extern "C") int (signalfd) (int fd, const sigset_t *mask, int flags);
352 549
353/**/ 550struct signalfd_siginfo
551{
552 uint32_t ssi_signo;
553 char pad[128 - sizeof (uint32_t)];
554};
555#endif
556
557/* for timerfd, libev core requires TFD_TIMER_CANCEL_ON_SET &c */
558#if EV_USE_TIMERFD
559# include <sys/timerfd.h>
560/* timerfd is only used for periodics */
561# if !(defined (TFD_TIMER_CANCEL_ON_SET) && defined (TFD_CLOEXEC) && defined (TFD_NONBLOCK)) || !EV_PERIODIC_ENABLE
562# undef EV_USE_TIMERFD
563# define EV_USE_TIMERFD 0
564# endif
565#endif
566
567/*****************************************************************************/
354 568
355#if EV_VERIFY >= 3 569#if EV_VERIFY >= 3
356# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 570# define EV_FREQUENT_CHECK ev_verify (EV_A)
357#else 571#else
358# define EV_FREQUENT_CHECK do { } while (0) 572# define EV_FREQUENT_CHECK do { } while (0)
359#endif 573#endif
360 574
361/* 575/*
362 * This is used to avoid floating point rounding problems. 576 * This is used to work around floating point rounding problems.
363 * It is added to ev_rt_now when scheduling periodics
364 * to ensure progress, time-wise, even when rounding
365 * errors are against us.
366 * This value is good at least till the year 4000. 577 * This value is good at least till the year 4000.
367 * Better solutions welcome.
368 */ 578 */
369#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 579#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
580/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
370 581
371#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 582#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
372#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 583#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
373/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
374 584
585/* find a portable timestamp that is "always" in the future but fits into time_t.
586 * this is quite hard, and we are mostly guessing - we handle 32 bit signed/unsigned time_t,
587 * and sizes larger than 32 bit, and maybe the unlikely floating point time_t */
588#define EV_TSTAMP_HUGE \
589 (sizeof (time_t) >= 8 ? 10000000000000. \
590 : 0 < (time_t)4294967295 ? 4294967295. \
591 : 2147483647.) \
592
593#ifndef EV_TS_CONST
594# define EV_TS_CONST(nv) nv
595# define EV_TS_TO_MSEC(a) a * 1e3 + 0.9999
596# define EV_TS_FROM_USEC(us) us * 1e-6
597# define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
598# define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
599# define EV_TV_GET(tv) ((tv).tv_sec + (tv).tv_usec * 1e-6)
600# define EV_TS_GET(ts) ((ts).tv_sec + (ts).tv_nsec * 1e-9)
601#endif
602
603/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
604/* ECB.H BEGIN */
605/*
606 * libecb - http://software.schmorp.de/pkg/libecb
607 *
608 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
609 * Copyright (©) 2011 Emanuele Giaquinta
610 * All rights reserved.
611 *
612 * Redistribution and use in source and binary forms, with or without modifica-
613 * tion, are permitted provided that the following conditions are met:
614 *
615 * 1. Redistributions of source code must retain the above copyright notice,
616 * this list of conditions and the following disclaimer.
617 *
618 * 2. Redistributions in binary form must reproduce the above copyright
619 * notice, this list of conditions and the following disclaimer in the
620 * documentation and/or other materials provided with the distribution.
621 *
622 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
623 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
624 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
625 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
626 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
627 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
628 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
629 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
630 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
631 * OF THE POSSIBILITY OF SUCH DAMAGE.
632 *
633 * Alternatively, the contents of this file may be used under the terms of
634 * the GNU General Public License ("GPL") version 2 or any later version,
635 * in which case the provisions of the GPL are applicable instead of
636 * the above. If you wish to allow the use of your version of this file
637 * only under the terms of the GPL and not to allow others to use your
638 * version of this file under the BSD license, indicate your decision
639 * by deleting the provisions above and replace them with the notice
640 * and other provisions required by the GPL. If you do not delete the
641 * provisions above, a recipient may use your version of this file under
642 * either the BSD or the GPL.
643 */
644
645#ifndef ECB_H
646#define ECB_H
647
648/* 16 bits major, 16 bits minor */
649#define ECB_VERSION 0x00010006
650
651#ifdef _WIN32
652 typedef signed char int8_t;
653 typedef unsigned char uint8_t;
654 typedef signed short int16_t;
655 typedef unsigned short uint16_t;
656 typedef signed int int32_t;
657 typedef unsigned int uint32_t;
375#if __GNUC__ >= 4 658 #if __GNUC__
376# define expect(expr,value) __builtin_expect ((expr),(value)) 659 typedef signed long long int64_t;
377# define noinline __attribute__ ((noinline)) 660 typedef unsigned long long uint64_t;
661 #else /* _MSC_VER || __BORLANDC__ */
662 typedef signed __int64 int64_t;
663 typedef unsigned __int64 uint64_t;
664 #endif
665 #ifdef _WIN64
666 #define ECB_PTRSIZE 8
667 typedef uint64_t uintptr_t;
668 typedef int64_t intptr_t;
669 #else
670 #define ECB_PTRSIZE 4
671 typedef uint32_t uintptr_t;
672 typedef int32_t intptr_t;
673 #endif
378#else 674#else
379# define expect(expr,value) (expr) 675 #include <inttypes.h>
380# define noinline 676 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
381# if __STDC_VERSION__ < 199901L && __GNUC__ < 2 677 #define ECB_PTRSIZE 8
382# define inline 678 #else
679 #define ECB_PTRSIZE 4
680 #endif
383# endif 681#endif
682
683#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
684#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
685
686/* work around x32 idiocy by defining proper macros */
687#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
688 #if _ILP32
689 #define ECB_AMD64_X32 1
690 #else
691 #define ECB_AMD64 1
384#endif 692 #endif
693#endif
385 694
386#define expect_false(expr) expect ((expr) != 0, 0) 695/* many compilers define _GNUC_ to some versions but then only implement
387#define expect_true(expr) expect ((expr) != 0, 1) 696 * what their idiot authors think are the "more important" extensions,
388#define inline_size static inline 697 * causing enormous grief in return for some better fake benchmark numbers.
389 698 * or so.
390#if EV_MINIMAL 699 * we try to detect these and simply assume they are not gcc - if they have
391# define inline_speed static noinline 700 * an issue with that they should have done it right in the first place.
701 */
702#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
703 #define ECB_GCC_VERSION(major,minor) 0
392#else 704#else
705 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
706#endif
707
708#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
709
710#if __clang__ && defined __has_builtin
711 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
712#else
713 #define ECB_CLANG_BUILTIN(x) 0
714#endif
715
716#if __clang__ && defined __has_extension
717 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
718#else
719 #define ECB_CLANG_EXTENSION(x) 0
720#endif
721
722#define ECB_CPP (__cplusplus+0)
723#define ECB_CPP11 (__cplusplus >= 201103L)
724#define ECB_CPP14 (__cplusplus >= 201402L)
725#define ECB_CPP17 (__cplusplus >= 201703L)
726
727#if ECB_CPP
728 #define ECB_C 0
729 #define ECB_STDC_VERSION 0
730#else
731 #define ECB_C 1
732 #define ECB_STDC_VERSION __STDC_VERSION__
733#endif
734
735#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
736#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
737#define ECB_C17 (ECB_STDC_VERSION >= 201710L)
738
739#if ECB_CPP
740 #define ECB_EXTERN_C extern "C"
741 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
742 #define ECB_EXTERN_C_END }
743#else
744 #define ECB_EXTERN_C extern
745 #define ECB_EXTERN_C_BEG
746 #define ECB_EXTERN_C_END
747#endif
748
749/*****************************************************************************/
750
751/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
752/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
753
754#if ECB_NO_THREADS
755 #define ECB_NO_SMP 1
756#endif
757
758#if ECB_NO_SMP
759 #define ECB_MEMORY_FENCE do { } while (0)
760#endif
761
762/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
763#if __xlC__ && ECB_CPP
764 #include <builtins.h>
765#endif
766
767#if 1400 <= _MSC_VER
768 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
769#endif
770
771#ifndef ECB_MEMORY_FENCE
772 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
773 #define ECB_MEMORY_FENCE_RELAXED __asm__ __volatile__ ("" : : : "memory")
774 #if __i386 || __i386__
775 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
776 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
777 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
778 #elif ECB_GCC_AMD64
779 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
780 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
781 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
782 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
783 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
784 #elif defined __ARM_ARCH_2__ \
785 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
786 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
787 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
788 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
789 || defined __ARM_ARCH_5TEJ__
790 /* should not need any, unless running old code on newer cpu - arm doesn't support that */
791 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
792 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
793 || defined __ARM_ARCH_6T2__
794 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
795 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
796 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
797 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
798 #elif __aarch64__
799 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
800 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
801 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
802 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
803 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
804 #elif defined __s390__ || defined __s390x__
805 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
806 #elif defined __mips__
807 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
808 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
809 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
810 #elif defined __alpha__
811 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
812 #elif defined __hppa__
813 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
814 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
815 #elif defined __ia64__
816 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
817 #elif defined __m68k__
818 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
819 #elif defined __m88k__
820 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
821 #elif defined __sh__
822 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
823 #endif
824 #endif
825#endif
826
827#ifndef ECB_MEMORY_FENCE
828 #if ECB_GCC_VERSION(4,7)
829 /* see comment below (stdatomic.h) about the C11 memory model. */
830 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
831 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
832 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
833 #define ECB_MEMORY_FENCE_RELAXED __atomic_thread_fence (__ATOMIC_RELAXED)
834
835 #elif ECB_CLANG_EXTENSION(c_atomic)
836 /* see comment below (stdatomic.h) about the C11 memory model. */
837 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
838 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
839 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
840 #define ECB_MEMORY_FENCE_RELAXED __c11_atomic_thread_fence (__ATOMIC_RELAXED)
841
842 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
843 #define ECB_MEMORY_FENCE __sync_synchronize ()
844 #elif _MSC_VER >= 1500 /* VC++ 2008 */
845 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
846 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
847 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
848 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
849 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
850 #elif _MSC_VER >= 1400 /* VC++ 2005 */
851 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
852 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
853 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
854 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
855 #elif defined _WIN32
856 #include <WinNT.h>
857 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
858 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
859 #include <mbarrier.h>
860 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
861 #define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier ()
862 #define ECB_MEMORY_FENCE_RELEASE __machine_rel_barrier ()
863 #define ECB_MEMORY_FENCE_RELAXED __compiler_barrier ()
864 #elif __xlC__
865 #define ECB_MEMORY_FENCE __sync ()
866 #endif
867#endif
868
869#ifndef ECB_MEMORY_FENCE
870 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
871 /* we assume that these memory fences work on all variables/all memory accesses, */
872 /* not just C11 atomics and atomic accesses */
873 #include <stdatomic.h>
874 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
875 #define ECB_MEMORY_FENCE_ACQUIRE atomic_thread_fence (memory_order_acquire)
876 #define ECB_MEMORY_FENCE_RELEASE atomic_thread_fence (memory_order_release)
877 #endif
878#endif
879
880#ifndef ECB_MEMORY_FENCE
881 #if !ECB_AVOID_PTHREADS
882 /*
883 * if you get undefined symbol references to pthread_mutex_lock,
884 * or failure to find pthread.h, then you should implement
885 * the ECB_MEMORY_FENCE operations for your cpu/compiler
886 * OR provide pthread.h and link against the posix thread library
887 * of your system.
888 */
889 #include <pthread.h>
890 #define ECB_NEEDS_PTHREADS 1
891 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
892
893 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
894 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
895 #endif
896#endif
897
898#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
899 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
900#endif
901
902#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
903 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
904#endif
905
906#if !defined ECB_MEMORY_FENCE_RELAXED && defined ECB_MEMORY_FENCE
907 #define ECB_MEMORY_FENCE_RELAXED ECB_MEMORY_FENCE /* very heavy-handed */
908#endif
909
910/*****************************************************************************/
911
912#if ECB_CPP
913 #define ecb_inline static inline
914#elif ECB_GCC_VERSION(2,5)
915 #define ecb_inline static __inline__
916#elif ECB_C99
917 #define ecb_inline static inline
918#else
919 #define ecb_inline static
920#endif
921
922#if ECB_GCC_VERSION(3,3)
923 #define ecb_restrict __restrict__
924#elif ECB_C99
925 #define ecb_restrict restrict
926#else
927 #define ecb_restrict
928#endif
929
930typedef int ecb_bool;
931
932#define ECB_CONCAT_(a, b) a ## b
933#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
934#define ECB_STRINGIFY_(a) # a
935#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
936#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
937
938#define ecb_function_ ecb_inline
939
940#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
941 #define ecb_attribute(attrlist) __attribute__ (attrlist)
942#else
943 #define ecb_attribute(attrlist)
944#endif
945
946#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
947 #define ecb_is_constant(expr) __builtin_constant_p (expr)
948#else
949 /* possible C11 impl for integral types
950 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
951 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
952
953 #define ecb_is_constant(expr) 0
954#endif
955
956#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
957 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
958#else
959 #define ecb_expect(expr,value) (expr)
960#endif
961
962#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
963 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
964#else
965 #define ecb_prefetch(addr,rw,locality)
966#endif
967
968/* no emulation for ecb_decltype */
969#if ECB_CPP11
970 // older implementations might have problems with decltype(x)::type, work around it
971 template<class T> struct ecb_decltype_t { typedef T type; };
972 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
973#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
974 #define ecb_decltype(x) __typeof__ (x)
975#endif
976
977#if _MSC_VER >= 1300
978 #define ecb_deprecated __declspec (deprecated)
979#else
980 #define ecb_deprecated ecb_attribute ((__deprecated__))
981#endif
982
983#if _MSC_VER >= 1500
984 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
985#elif ECB_GCC_VERSION(4,5)
986 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
987#else
988 #define ecb_deprecated_message(msg) ecb_deprecated
989#endif
990
991#if _MSC_VER >= 1400
992 #define ecb_noinline __declspec (noinline)
993#else
994 #define ecb_noinline ecb_attribute ((__noinline__))
995#endif
996
997#define ecb_unused ecb_attribute ((__unused__))
998#define ecb_const ecb_attribute ((__const__))
999#define ecb_pure ecb_attribute ((__pure__))
1000
1001#if ECB_C11 || __IBMC_NORETURN
1002 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
1003 #define ecb_noreturn _Noreturn
1004#elif ECB_CPP11
1005 #define ecb_noreturn [[noreturn]]
1006#elif _MSC_VER >= 1200
1007 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
1008 #define ecb_noreturn __declspec (noreturn)
1009#else
1010 #define ecb_noreturn ecb_attribute ((__noreturn__))
1011#endif
1012
1013#if ECB_GCC_VERSION(4,3)
1014 #define ecb_artificial ecb_attribute ((__artificial__))
1015 #define ecb_hot ecb_attribute ((__hot__))
1016 #define ecb_cold ecb_attribute ((__cold__))
1017#else
1018 #define ecb_artificial
1019 #define ecb_hot
1020 #define ecb_cold
1021#endif
1022
1023/* put around conditional expressions if you are very sure that the */
1024/* expression is mostly true or mostly false. note that these return */
1025/* booleans, not the expression. */
1026#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
1027#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
1028/* for compatibility to the rest of the world */
1029#define ecb_likely(expr) ecb_expect_true (expr)
1030#define ecb_unlikely(expr) ecb_expect_false (expr)
1031
1032/* count trailing zero bits and count # of one bits */
1033#if ECB_GCC_VERSION(3,4) \
1034 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
1035 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
1036 && ECB_CLANG_BUILTIN(__builtin_popcount))
1037 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
1038 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
1039 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
1040 #define ecb_ctz32(x) __builtin_ctz (x)
1041 #define ecb_ctz64(x) __builtin_ctzll (x)
1042 #define ecb_popcount32(x) __builtin_popcount (x)
1043 /* no popcountll */
1044#else
1045 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
1046 ecb_function_ ecb_const int
1047 ecb_ctz32 (uint32_t x)
1048 {
1049#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1050 unsigned long r;
1051 _BitScanForward (&r, x);
1052 return (int)r;
1053#else
1054 int r = 0;
1055
1056 x &= ~x + 1; /* this isolates the lowest bit */
1057
1058#if ECB_branchless_on_i386
1059 r += !!(x & 0xaaaaaaaa) << 0;
1060 r += !!(x & 0xcccccccc) << 1;
1061 r += !!(x & 0xf0f0f0f0) << 2;
1062 r += !!(x & 0xff00ff00) << 3;
1063 r += !!(x & 0xffff0000) << 4;
1064#else
1065 if (x & 0xaaaaaaaa) r += 1;
1066 if (x & 0xcccccccc) r += 2;
1067 if (x & 0xf0f0f0f0) r += 4;
1068 if (x & 0xff00ff00) r += 8;
1069 if (x & 0xffff0000) r += 16;
1070#endif
1071
1072 return r;
1073#endif
1074 }
1075
1076 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
1077 ecb_function_ ecb_const int
1078 ecb_ctz64 (uint64_t x)
1079 {
1080#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1081 unsigned long r;
1082 _BitScanForward64 (&r, x);
1083 return (int)r;
1084#else
1085 int shift = x & 0xffffffff ? 0 : 32;
1086 return ecb_ctz32 (x >> shift) + shift;
1087#endif
1088 }
1089
1090 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
1091 ecb_function_ ecb_const int
1092 ecb_popcount32 (uint32_t x)
1093 {
1094 x -= (x >> 1) & 0x55555555;
1095 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
1096 x = ((x >> 4) + x) & 0x0f0f0f0f;
1097 x *= 0x01010101;
1098
1099 return x >> 24;
1100 }
1101
1102 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
1103 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
1104 {
1105#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1106 unsigned long r;
1107 _BitScanReverse (&r, x);
1108 return (int)r;
1109#else
1110 int r = 0;
1111
1112 if (x >> 16) { x >>= 16; r += 16; }
1113 if (x >> 8) { x >>= 8; r += 8; }
1114 if (x >> 4) { x >>= 4; r += 4; }
1115 if (x >> 2) { x >>= 2; r += 2; }
1116 if (x >> 1) { r += 1; }
1117
1118 return r;
1119#endif
1120 }
1121
1122 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
1123 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
1124 {
1125#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1126 unsigned long r;
1127 _BitScanReverse64 (&r, x);
1128 return (int)r;
1129#else
1130 int r = 0;
1131
1132 if (x >> 32) { x >>= 32; r += 32; }
1133
1134 return r + ecb_ld32 (x);
1135#endif
1136 }
1137#endif
1138
1139ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
1140ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
1141ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
1142ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
1143
1144ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
1145ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
1146{
1147 return ( (x * 0x0802U & 0x22110U)
1148 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
1149}
1150
1151ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
1152ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
1153{
1154 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
1155 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
1156 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
1157 x = ( x >> 8 ) | ( x << 8);
1158
1159 return x;
1160}
1161
1162ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
1163ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
1164{
1165 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
1166 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
1167 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
1168 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
1169 x = ( x >> 16 ) | ( x << 16);
1170
1171 return x;
1172}
1173
1174/* popcount64 is only available on 64 bit cpus as gcc builtin */
1175/* so for this version we are lazy */
1176ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
1177ecb_function_ ecb_const int
1178ecb_popcount64 (uint64_t x)
1179{
1180 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
1181}
1182
1183ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
1184ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
1185ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
1186ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
1187ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
1188ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
1189ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
1190ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
1191
1192ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
1193ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
1194ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
1195ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
1196ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
1197ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
1198ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
1199ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
1200
1201#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1202 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1203 #define ecb_bswap16(x) __builtin_bswap16 (x)
1204 #else
1205 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1206 #endif
1207 #define ecb_bswap32(x) __builtin_bswap32 (x)
1208 #define ecb_bswap64(x) __builtin_bswap64 (x)
1209#elif _MSC_VER
1210 #include <stdlib.h>
1211 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1212 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1213 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
1214#else
1215 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
1216 ecb_function_ ecb_const uint16_t
1217 ecb_bswap16 (uint16_t x)
1218 {
1219 return ecb_rotl16 (x, 8);
1220 }
1221
1222 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
1223 ecb_function_ ecb_const uint32_t
1224 ecb_bswap32 (uint32_t x)
1225 {
1226 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
1227 }
1228
1229 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
1230 ecb_function_ ecb_const uint64_t
1231 ecb_bswap64 (uint64_t x)
1232 {
1233 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
1234 }
1235#endif
1236
1237#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
1238 #define ecb_unreachable() __builtin_unreachable ()
1239#else
1240 /* this seems to work fine, but gcc always emits a warning for it :/ */
1241 ecb_inline ecb_noreturn void ecb_unreachable (void);
1242 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
1243#endif
1244
1245/* try to tell the compiler that some condition is definitely true */
1246#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
1247
1248ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
1249ecb_inline ecb_const uint32_t
1250ecb_byteorder_helper (void)
1251{
1252 /* the union code still generates code under pressure in gcc, */
1253 /* but less than using pointers, and always seems to */
1254 /* successfully return a constant. */
1255 /* the reason why we have this horrible preprocessor mess */
1256 /* is to avoid it in all cases, at least on common architectures */
1257 /* or when using a recent enough gcc version (>= 4.6) */
1258#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1259 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1260 #define ECB_LITTLE_ENDIAN 1
1261 return 0x44332211;
1262#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1263 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1264 #define ECB_BIG_ENDIAN 1
1265 return 0x11223344;
1266#else
1267 union
1268 {
1269 uint8_t c[4];
1270 uint32_t u;
1271 } u = { 0x11, 0x22, 0x33, 0x44 };
1272 return u.u;
1273#endif
1274}
1275
1276ecb_inline ecb_const ecb_bool ecb_big_endian (void);
1277ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
1278ecb_inline ecb_const ecb_bool ecb_little_endian (void);
1279ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
1280
1281#if ECB_GCC_VERSION(3,0) || ECB_C99
1282 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1283#else
1284 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1285#endif
1286
1287#if ECB_CPP
1288 template<typename T>
1289 static inline T ecb_div_rd (T val, T div)
1290 {
1291 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1292 }
1293 template<typename T>
1294 static inline T ecb_div_ru (T val, T div)
1295 {
1296 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1297 }
1298#else
1299 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1300 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1301#endif
1302
1303#if ecb_cplusplus_does_not_suck
1304 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1305 template<typename T, int N>
1306 static inline int ecb_array_length (const T (&arr)[N])
1307 {
1308 return N;
1309 }
1310#else
1311 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1312#endif
1313
1314ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1315ecb_function_ ecb_const uint32_t
1316ecb_binary16_to_binary32 (uint32_t x)
1317{
1318 unsigned int s = (x & 0x8000) << (31 - 15);
1319 int e = (x >> 10) & 0x001f;
1320 unsigned int m = x & 0x03ff;
1321
1322 if (ecb_expect_false (e == 31))
1323 /* infinity or NaN */
1324 e = 255 - (127 - 15);
1325 else if (ecb_expect_false (!e))
1326 {
1327 if (ecb_expect_true (!m))
1328 /* zero, handled by code below by forcing e to 0 */
1329 e = 0 - (127 - 15);
1330 else
1331 {
1332 /* subnormal, renormalise */
1333 unsigned int s = 10 - ecb_ld32 (m);
1334
1335 m = (m << s) & 0x3ff; /* mask implicit bit */
1336 e -= s - 1;
1337 }
1338 }
1339
1340 /* e and m now are normalised, or zero, (or inf or nan) */
1341 e += 127 - 15;
1342
1343 return s | (e << 23) | (m << (23 - 10));
1344}
1345
1346ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1347ecb_function_ ecb_const uint16_t
1348ecb_binary32_to_binary16 (uint32_t x)
1349{
1350 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1351 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1352 unsigned int m = x & 0x007fffff;
1353
1354 x &= 0x7fffffff;
1355
1356 /* if it's within range of binary16 normals, use fast path */
1357 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1358 {
1359 /* mantissa round-to-even */
1360 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1361
1362 /* handle overflow */
1363 if (ecb_expect_false (m >= 0x00800000))
1364 {
1365 m >>= 1;
1366 e += 1;
1367 }
1368
1369 return s | (e << 10) | (m >> (23 - 10));
1370 }
1371
1372 /* handle large numbers and infinity */
1373 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1374 return s | 0x7c00;
1375
1376 /* handle zero, subnormals and small numbers */
1377 if (ecb_expect_true (x < 0x38800000))
1378 {
1379 /* zero */
1380 if (ecb_expect_true (!x))
1381 return s;
1382
1383 /* handle subnormals */
1384
1385 /* too small, will be zero */
1386 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1387 return s;
1388
1389 m |= 0x00800000; /* make implicit bit explicit */
1390
1391 /* very tricky - we need to round to the nearest e (+10) bit value */
1392 {
1393 unsigned int bits = 14 - e;
1394 unsigned int half = (1 << (bits - 1)) - 1;
1395 unsigned int even = (m >> bits) & 1;
1396
1397 /* if this overflows, we will end up with a normalised number */
1398 m = (m + half + even) >> bits;
1399 }
1400
1401 return s | m;
1402 }
1403
1404 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1405 m >>= 13;
1406
1407 return s | 0x7c00 | m | !m;
1408}
1409
1410/*******************************************************************************/
1411/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1412
1413/* basically, everything uses "ieee pure-endian" floating point numbers */
1414/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1415#if 0 \
1416 || __i386 || __i386__ \
1417 || ECB_GCC_AMD64 \
1418 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1419 || defined __s390__ || defined __s390x__ \
1420 || defined __mips__ \
1421 || defined __alpha__ \
1422 || defined __hppa__ \
1423 || defined __ia64__ \
1424 || defined __m68k__ \
1425 || defined __m88k__ \
1426 || defined __sh__ \
1427 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1428 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1429 || defined __aarch64__
1430 #define ECB_STDFP 1
1431 #include <string.h> /* for memcpy */
1432#else
1433 #define ECB_STDFP 0
1434#endif
1435
1436#ifndef ECB_NO_LIBM
1437
1438 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1439
1440 /* only the oldest of old doesn't have this one. solaris. */
1441 #ifdef INFINITY
1442 #define ECB_INFINITY INFINITY
1443 #else
1444 #define ECB_INFINITY HUGE_VAL
1445 #endif
1446
1447 #ifdef NAN
1448 #define ECB_NAN NAN
1449 #else
1450 #define ECB_NAN ECB_INFINITY
1451 #endif
1452
1453 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1454 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1455 #define ecb_frexpf(x,e) frexpf ((x), (e))
1456 #else
1457 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1458 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1459 #endif
1460
1461 /* convert a float to ieee single/binary32 */
1462 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1463 ecb_function_ ecb_const uint32_t
1464 ecb_float_to_binary32 (float x)
1465 {
1466 uint32_t r;
1467
1468 #if ECB_STDFP
1469 memcpy (&r, &x, 4);
1470 #else
1471 /* slow emulation, works for anything but -0 */
1472 uint32_t m;
1473 int e;
1474
1475 if (x == 0e0f ) return 0x00000000U;
1476 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1477 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1478 if (x != x ) return 0x7fbfffffU;
1479
1480 m = ecb_frexpf (x, &e) * 0x1000000U;
1481
1482 r = m & 0x80000000U;
1483
1484 if (r)
1485 m = -m;
1486
1487 if (e <= -126)
1488 {
1489 m &= 0xffffffU;
1490 m >>= (-125 - e);
1491 e = -126;
1492 }
1493
1494 r |= (e + 126) << 23;
1495 r |= m & 0x7fffffU;
1496 #endif
1497
1498 return r;
1499 }
1500
1501 /* converts an ieee single/binary32 to a float */
1502 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1503 ecb_function_ ecb_const float
1504 ecb_binary32_to_float (uint32_t x)
1505 {
1506 float r;
1507
1508 #if ECB_STDFP
1509 memcpy (&r, &x, 4);
1510 #else
1511 /* emulation, only works for normals and subnormals and +0 */
1512 int neg = x >> 31;
1513 int e = (x >> 23) & 0xffU;
1514
1515 x &= 0x7fffffU;
1516
1517 if (e)
1518 x |= 0x800000U;
1519 else
1520 e = 1;
1521
1522 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1523 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1524
1525 r = neg ? -r : r;
1526 #endif
1527
1528 return r;
1529 }
1530
1531 /* convert a double to ieee double/binary64 */
1532 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1533 ecb_function_ ecb_const uint64_t
1534 ecb_double_to_binary64 (double x)
1535 {
1536 uint64_t r;
1537
1538 #if ECB_STDFP
1539 memcpy (&r, &x, 8);
1540 #else
1541 /* slow emulation, works for anything but -0 */
1542 uint64_t m;
1543 int e;
1544
1545 if (x == 0e0 ) return 0x0000000000000000U;
1546 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1547 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1548 if (x != x ) return 0X7ff7ffffffffffffU;
1549
1550 m = frexp (x, &e) * 0x20000000000000U;
1551
1552 r = m & 0x8000000000000000;;
1553
1554 if (r)
1555 m = -m;
1556
1557 if (e <= -1022)
1558 {
1559 m &= 0x1fffffffffffffU;
1560 m >>= (-1021 - e);
1561 e = -1022;
1562 }
1563
1564 r |= ((uint64_t)(e + 1022)) << 52;
1565 r |= m & 0xfffffffffffffU;
1566 #endif
1567
1568 return r;
1569 }
1570
1571 /* converts an ieee double/binary64 to a double */
1572 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1573 ecb_function_ ecb_const double
1574 ecb_binary64_to_double (uint64_t x)
1575 {
1576 double r;
1577
1578 #if ECB_STDFP
1579 memcpy (&r, &x, 8);
1580 #else
1581 /* emulation, only works for normals and subnormals and +0 */
1582 int neg = x >> 63;
1583 int e = (x >> 52) & 0x7ffU;
1584
1585 x &= 0xfffffffffffffU;
1586
1587 if (e)
1588 x |= 0x10000000000000U;
1589 else
1590 e = 1;
1591
1592 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1593 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1594
1595 r = neg ? -r : r;
1596 #endif
1597
1598 return r;
1599 }
1600
1601 /* convert a float to ieee half/binary16 */
1602 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1603 ecb_function_ ecb_const uint16_t
1604 ecb_float_to_binary16 (float x)
1605 {
1606 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1607 }
1608
1609 /* convert an ieee half/binary16 to float */
1610 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1611 ecb_function_ ecb_const float
1612 ecb_binary16_to_float (uint16_t x)
1613 {
1614 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1615 }
1616
1617#endif
1618
1619#endif
1620
1621/* ECB.H END */
1622
1623#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1624/* if your architecture doesn't need memory fences, e.g. because it is
1625 * single-cpu/core, or if you use libev in a project that doesn't use libev
1626 * from multiple threads, then you can define ECB_NO_THREADS when compiling
1627 * libev, in which cases the memory fences become nops.
1628 * alternatively, you can remove this #error and link against libpthread,
1629 * which will then provide the memory fences.
1630 */
1631# error "memory fences not defined for your architecture, please report"
1632#endif
1633
1634#ifndef ECB_MEMORY_FENCE
1635# define ECB_MEMORY_FENCE do { } while (0)
1636# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1637# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1638#endif
1639
1640#define inline_size ecb_inline
1641
1642#if EV_FEATURE_CODE
393# define inline_speed static inline 1643# define inline_speed ecb_inline
1644#else
1645# define inline_speed ecb_noinline static
394#endif 1646#endif
1647
1648/*****************************************************************************/
1649/* raw syscall wrappers */
1650
1651#if EV_NEED_SYSCALL
1652
1653#include <sys/syscall.h>
1654
1655/*
1656 * define some syscall wrappers for common architectures
1657 * this is mostly for nice looks during debugging, not performance.
1658 * our syscalls return < 0, not == -1, on error. which is good
1659 * enough for linux aio.
1660 * TODO: arm is also common nowadays, maybe even mips and x86
1661 * TODO: after implementing this, it suddenly looks like overkill, but its hard to remove...
1662 */
1663#if __GNUC__ && __linux && ECB_AMD64 && !defined __OPTIMIZE_SIZE__
1664 /* the costly errno access probably kills this for size optimisation */
1665
1666 #define ev_syscall(nr,narg,arg1,arg2,arg3,arg4,arg5,arg6) \
1667 ({ \
1668 long res; \
1669 register unsigned long r6 __asm__ ("r9" ); \
1670 register unsigned long r5 __asm__ ("r8" ); \
1671 register unsigned long r4 __asm__ ("r10"); \
1672 register unsigned long r3 __asm__ ("rdx"); \
1673 register unsigned long r2 __asm__ ("rsi"); \
1674 register unsigned long r1 __asm__ ("rdi"); \
1675 if (narg >= 6) r6 = (unsigned long)(arg6); \
1676 if (narg >= 5) r5 = (unsigned long)(arg5); \
1677 if (narg >= 4) r4 = (unsigned long)(arg4); \
1678 if (narg >= 3) r3 = (unsigned long)(arg3); \
1679 if (narg >= 2) r2 = (unsigned long)(arg2); \
1680 if (narg >= 1) r1 = (unsigned long)(arg1); \
1681 __asm__ __volatile__ ( \
1682 "syscall\n\t" \
1683 : "=a" (res) \
1684 : "0" (nr), "r" (r1), "r" (r2), "r" (r3), "r" (r4), "r" (r5) \
1685 : "cc", "r11", "cx", "memory"); \
1686 errno = -res; \
1687 res; \
1688 })
1689
1690#endif
1691
1692#ifdef ev_syscall
1693 #define ev_syscall0(nr) ev_syscall (nr, 0, 0, 0, 0, 0, 0, 0)
1694 #define ev_syscall1(nr,arg1) ev_syscall (nr, 1, arg1, 0, 0, 0, 0, 0)
1695 #define ev_syscall2(nr,arg1,arg2) ev_syscall (nr, 2, arg1, arg2, 0, 0, 0, 0)
1696 #define ev_syscall3(nr,arg1,arg2,arg3) ev_syscall (nr, 3, arg1, arg2, arg3, 0, 0, 0)
1697 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) ev_syscall (nr, 3, arg1, arg2, arg3, arg4, 0, 0)
1698 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) ev_syscall (nr, 5, arg1, arg2, arg3, arg4, arg5, 0)
1699 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) ev_syscall (nr, 6, arg1, arg2, arg3, arg4, arg5,arg6)
1700#else
1701 #define ev_syscall0(nr) syscall (nr)
1702 #define ev_syscall1(nr,arg1) syscall (nr, arg1)
1703 #define ev_syscall2(nr,arg1,arg2) syscall (nr, arg1, arg2)
1704 #define ev_syscall3(nr,arg1,arg2,arg3) syscall (nr, arg1, arg2, arg3)
1705 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) syscall (nr, arg1, arg2, arg3, arg4)
1706 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) syscall (nr, arg1, arg2, arg3, arg4, arg5)
1707 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) syscall (nr, arg1, arg2, arg3, arg4, arg5,arg6)
1708#endif
1709
1710#endif
1711
1712/*****************************************************************************/
395 1713
396#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1714#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
397 1715
398#if EV_MINPRI == EV_MAXPRI 1716#if EV_MINPRI == EV_MAXPRI
399# define ABSPRI(w) (((W)w), 0) 1717# define ABSPRI(w) (((W)w), 0)
400#else 1718#else
401# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1719# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
402#endif 1720#endif
403 1721
404#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1722#define EMPTY /* required for microsofts broken pseudo-c compiler */
405#define EMPTY2(a,b) /* used to suppress some warnings */
406 1723
407typedef ev_watcher *W; 1724typedef ev_watcher *W;
408typedef ev_watcher_list *WL; 1725typedef ev_watcher_list *WL;
409typedef ev_watcher_time *WT; 1726typedef ev_watcher_time *WT;
410 1727
411#define ev_active(w) ((W)(w))->active 1728#define ev_active(w) ((W)(w))->active
412#define ev_at(w) ((WT)(w))->at 1729#define ev_at(w) ((WT)(w))->at
413 1730
414#if EV_USE_REALTIME 1731#if EV_USE_REALTIME
415/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 1732/* sig_atomic_t is used to avoid per-thread variables or locking but still */
416/* giving it a reasonably high chance of working on typical architetcures */ 1733/* giving it a reasonably high chance of working on typical architectures */
417static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 1734static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
418#endif 1735#endif
419 1736
420#if EV_USE_MONOTONIC 1737#if EV_USE_MONOTONIC
421static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 1738static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
422#endif 1739#endif
423 1740
1741#ifndef EV_FD_TO_WIN32_HANDLE
1742# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
1743#endif
1744#ifndef EV_WIN32_HANDLE_TO_FD
1745# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
1746#endif
1747#ifndef EV_WIN32_CLOSE_FD
1748# define EV_WIN32_CLOSE_FD(fd) close (fd)
1749#endif
1750
424#ifdef _WIN32 1751#ifdef _WIN32
425# include "ev_win32.c" 1752# include "ev_win32.c"
426#endif 1753#endif
427 1754
428/*****************************************************************************/ 1755/*****************************************************************************/
429 1756
1757#if EV_USE_LINUXAIO
1758# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
1759#endif
1760
1761/* define a suitable floor function (only used by periodics atm) */
1762
1763#if EV_USE_FLOOR
1764# include <math.h>
1765# define ev_floor(v) floor (v)
1766#else
1767
1768#include <float.h>
1769
1770/* a floor() replacement function, should be independent of ev_tstamp type */
1771ecb_noinline
1772static ev_tstamp
1773ev_floor (ev_tstamp v)
1774{
1775 /* the choice of shift factor is not terribly important */
1776#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1777 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1778#else
1779 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1780#endif
1781
1782 /* special treatment for negative arguments */
1783 if (ecb_expect_false (v < 0.))
1784 {
1785 ev_tstamp f = -ev_floor (-v);
1786
1787 return f - (f == v ? 0 : 1);
1788 }
1789
1790 /* argument too large for an unsigned long? then reduce it */
1791 if (ecb_expect_false (v >= shift))
1792 {
1793 ev_tstamp f;
1794
1795 if (v == v - 1.)
1796 return v; /* very large numbers are assumed to be integer */
1797
1798 f = shift * ev_floor (v * (1. / shift));
1799 return f + ev_floor (v - f);
1800 }
1801
1802 /* fits into an unsigned long */
1803 return (unsigned long)v;
1804}
1805
1806#endif
1807
1808/*****************************************************************************/
1809
1810#ifdef __linux
1811# include <sys/utsname.h>
1812#endif
1813
1814ecb_noinline ecb_cold
1815static unsigned int
1816ev_linux_version (void)
1817{
1818#ifdef __linux
1819 unsigned int v = 0;
1820 struct utsname buf;
1821 int i;
1822 char *p = buf.release;
1823
1824 if (uname (&buf))
1825 return 0;
1826
1827 for (i = 3+1; --i; )
1828 {
1829 unsigned int c = 0;
1830
1831 for (;;)
1832 {
1833 if (*p >= '0' && *p <= '9')
1834 c = c * 10 + *p++ - '0';
1835 else
1836 {
1837 p += *p == '.';
1838 break;
1839 }
1840 }
1841
1842 v = (v << 8) | c;
1843 }
1844
1845 return v;
1846#else
1847 return 0;
1848#endif
1849}
1850
1851/*****************************************************************************/
1852
1853#if EV_AVOID_STDIO
1854ecb_noinline ecb_cold
1855static void
1856ev_printerr (const char *msg)
1857{
1858 write (STDERR_FILENO, msg, strlen (msg));
1859}
1860#endif
1861
430static void (*syserr_cb)(const char *msg); 1862static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
431 1863
1864ecb_cold
432void 1865void
433ev_set_syserr_cb (void (*cb)(const char *msg)) 1866ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
434{ 1867{
435 syserr_cb = cb; 1868 syserr_cb = cb;
436} 1869}
437 1870
438static void noinline 1871ecb_noinline ecb_cold
1872static void
439ev_syserr (const char *msg) 1873ev_syserr (const char *msg)
440{ 1874{
441 if (!msg) 1875 if (!msg)
442 msg = "(libev) system error"; 1876 msg = "(libev) system error";
443 1877
444 if (syserr_cb) 1878 if (syserr_cb)
445 syserr_cb (msg); 1879 syserr_cb (msg);
446 else 1880 else
447 { 1881 {
1882#if EV_AVOID_STDIO
1883 ev_printerr (msg);
1884 ev_printerr (": ");
1885 ev_printerr (strerror (errno));
1886 ev_printerr ("\n");
1887#else
448 perror (msg); 1888 perror (msg);
1889#endif
449 abort (); 1890 abort ();
450 } 1891 }
451} 1892}
452 1893
453static void * 1894static void *
454ev_realloc_emul (void *ptr, long size) 1895ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
455{ 1896{
456 /* some systems, notably openbsd and darwin, fail to properly 1897 /* some systems, notably openbsd and darwin, fail to properly
457 * implement realloc (x, 0) (as required by both ansi c-98 and 1898 * implement realloc (x, 0) (as required by both ansi c-89 and
458 * the single unix specification, so work around them here. 1899 * the single unix specification, so work around them here.
1900 * recently, also (at least) fedora and debian started breaking it,
1901 * despite documenting it otherwise.
459 */ 1902 */
460 1903
461 if (size) 1904 if (size)
462 return realloc (ptr, size); 1905 return realloc (ptr, size);
463 1906
464 free (ptr); 1907 free (ptr);
465 return 0; 1908 return 0;
466} 1909}
467 1910
468static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1911static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
469 1912
1913ecb_cold
470void 1914void
471ev_set_allocator (void *(*cb)(void *ptr, long size)) 1915ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
472{ 1916{
473 alloc = cb; 1917 alloc = cb;
474} 1918}
475 1919
476inline_speed void * 1920inline_speed void *
… …
478{ 1922{
479 ptr = alloc (ptr, size); 1923 ptr = alloc (ptr, size);
480 1924
481 if (!ptr && size) 1925 if (!ptr && size)
482 { 1926 {
1927#if EV_AVOID_STDIO
1928 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1929#else
483 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1930 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1931#endif
484 abort (); 1932 abort ();
485 } 1933 }
486 1934
487 return ptr; 1935 return ptr;
488} 1936}
… …
490#define ev_malloc(size) ev_realloc (0, (size)) 1938#define ev_malloc(size) ev_realloc (0, (size))
491#define ev_free(ptr) ev_realloc ((ptr), 0) 1939#define ev_free(ptr) ev_realloc ((ptr), 0)
492 1940
493/*****************************************************************************/ 1941/*****************************************************************************/
494 1942
1943/* set in reify when reification needed */
1944#define EV_ANFD_REIFY 1
1945
495/* file descriptor info structure */ 1946/* file descriptor info structure */
496typedef struct 1947typedef struct
497{ 1948{
498 WL head; 1949 WL head;
499 unsigned char events; /* the events watched for */ 1950 unsigned char events; /* the events watched for */
500 unsigned char reify; /* flag set when this ANFD needs reification */ 1951 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
501 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1952 unsigned char emask; /* some backends store the actual kernel mask in here */
502 unsigned char unused; 1953 unsigned char eflags; /* flags field for use by backends */
503#if EV_USE_EPOLL 1954#if EV_USE_EPOLL
504 unsigned int egen; /* generation counter to counter epoll bugs */ 1955 unsigned int egen; /* generation counter to counter epoll bugs */
505#endif 1956#endif
506#if EV_SELECT_IS_WINSOCKET 1957#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
507 SOCKET handle; 1958 SOCKET handle;
1959#endif
1960#if EV_USE_IOCP
1961 OVERLAPPED or, ow;
508#endif 1962#endif
509} ANFD; 1963} ANFD;
510 1964
511/* stores the pending event set for a given watcher */ 1965/* stores the pending event set for a given watcher */
512typedef struct 1966typedef struct
… …
554 #undef VAR 2008 #undef VAR
555 }; 2009 };
556 #include "ev_wrap.h" 2010 #include "ev_wrap.h"
557 2011
558 static struct ev_loop default_loop_struct; 2012 static struct ev_loop default_loop_struct;
559 struct ev_loop *ev_default_loop_ptr; 2013 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
560 2014
561#else 2015#else
562 2016
563 ev_tstamp ev_rt_now; 2017 EV_API_DECL ev_tstamp ev_rt_now = EV_TS_CONST (0.); /* needs to be initialised to make it a definition despite extern */
564 #define VAR(name,decl) static decl; 2018 #define VAR(name,decl) static decl;
565 #include "ev_vars.h" 2019 #include "ev_vars.h"
566 #undef VAR 2020 #undef VAR
567 2021
568 static int ev_default_loop_ptr; 2022 static int ev_default_loop_ptr;
569 2023
570#endif 2024#endif
571 2025
572#if EV_MINIMAL < 2 2026#if EV_FEATURE_API
573# define EV_SUSPEND_CB if (expect_false (suspend_cb)) suspend_cb (EV_A)
574# define EV_RESUME_CB if (expect_false (resume_cb )) resume_cb (EV_A) 2027# define EV_RELEASE_CB if (ecb_expect_false (release_cb)) release_cb (EV_A)
2028# define EV_ACQUIRE_CB if (ecb_expect_false (acquire_cb)) acquire_cb (EV_A)
575# define EV_INVOKE_PENDING invoke_cb (EV_A) 2029# define EV_INVOKE_PENDING invoke_cb (EV_A)
576#else 2030#else
577# define EV_SUSPEND_CB (void)0
578# define EV_RESUME_CB (void)0 2031# define EV_RELEASE_CB (void)0
2032# define EV_ACQUIRE_CB (void)0
579# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 2033# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
580#endif 2034#endif
2035
2036#define EVBREAK_RECURSE 0x80
581 2037
582/*****************************************************************************/ 2038/*****************************************************************************/
583 2039
584#ifndef EV_HAVE_EV_TIME 2040#ifndef EV_HAVE_EV_TIME
585ev_tstamp 2041ev_tstamp
586ev_time (void) 2042ev_time (void) EV_NOEXCEPT
587{ 2043{
588#if EV_USE_REALTIME 2044#if EV_USE_REALTIME
589 if (expect_true (have_realtime)) 2045 if (ecb_expect_true (have_realtime))
590 { 2046 {
591 struct timespec ts; 2047 struct timespec ts;
592 clock_gettime (CLOCK_REALTIME, &ts); 2048 clock_gettime (CLOCK_REALTIME, &ts);
593 return ts.tv_sec + ts.tv_nsec * 1e-9; 2049 return EV_TS_GET (ts);
594 } 2050 }
595#endif 2051#endif
596 2052
2053 {
597 struct timeval tv; 2054 struct timeval tv;
598 gettimeofday (&tv, 0); 2055 gettimeofday (&tv, 0);
599 return tv.tv_sec + tv.tv_usec * 1e-6; 2056 return EV_TV_GET (tv);
2057 }
600} 2058}
601#endif 2059#endif
602 2060
603inline_size ev_tstamp 2061inline_size ev_tstamp
604get_clock (void) 2062get_clock (void)
605{ 2063{
606#if EV_USE_MONOTONIC 2064#if EV_USE_MONOTONIC
607 if (expect_true (have_monotonic)) 2065 if (ecb_expect_true (have_monotonic))
608 { 2066 {
609 struct timespec ts; 2067 struct timespec ts;
610 clock_gettime (CLOCK_MONOTONIC, &ts); 2068 clock_gettime (CLOCK_MONOTONIC, &ts);
611 return ts.tv_sec + ts.tv_nsec * 1e-9; 2069 return EV_TS_GET (ts);
612 } 2070 }
613#endif 2071#endif
614 2072
615 return ev_time (); 2073 return ev_time ();
616} 2074}
617 2075
618#if EV_MULTIPLICITY 2076#if EV_MULTIPLICITY
619ev_tstamp 2077ev_tstamp
620ev_now (EV_P) 2078ev_now (EV_P) EV_NOEXCEPT
621{ 2079{
622 return ev_rt_now; 2080 return ev_rt_now;
623} 2081}
624#endif 2082#endif
625 2083
626void 2084void
627ev_sleep (ev_tstamp delay) 2085ev_sleep (ev_tstamp delay) EV_NOEXCEPT
628{ 2086{
629 if (delay > 0.) 2087 if (delay > EV_TS_CONST (0.))
630 { 2088 {
631#if EV_USE_NANOSLEEP 2089#if EV_USE_NANOSLEEP
632 struct timespec ts; 2090 struct timespec ts;
633 2091
634 ts.tv_sec = (time_t)delay; 2092 EV_TS_SET (ts, delay);
635 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
636
637 nanosleep (&ts, 0); 2093 nanosleep (&ts, 0);
638#elif defined(_WIN32) 2094#elif defined _WIN32
2095 /* maybe this should round up, as ms is very low resolution */
2096 /* compared to select (µs) or nanosleep (ns) */
639 Sleep ((unsigned long)(delay * 1e3)); 2097 Sleep ((unsigned long)(EV_TS_TO_MSEC (delay)));
640#else 2098#else
641 struct timeval tv; 2099 struct timeval tv;
642 2100
643 tv.tv_sec = (time_t)delay;
644 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
645
646 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 2101 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
647 /* somehting not guaranteed by newer posix versions, but guaranteed */ 2102 /* something not guaranteed by newer posix versions, but guaranteed */
648 /* by older ones */ 2103 /* by older ones */
2104 EV_TV_SET (tv, delay);
649 select (0, 0, 0, 0, &tv); 2105 select (0, 0, 0, 0, &tv);
650#endif 2106#endif
651 } 2107 }
652} 2108}
653 2109
654/*****************************************************************************/ 2110/*****************************************************************************/
655 2111
656#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 2112#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
657 2113
658/* find a suitable new size for the given array, */ 2114/* find a suitable new size for the given array, */
659/* hopefully by rounding to a ncie-to-malloc size */ 2115/* hopefully by rounding to a nice-to-malloc size */
660inline_size int 2116inline_size int
661array_nextsize (int elem, int cur, int cnt) 2117array_nextsize (int elem, int cur, int cnt)
662{ 2118{
663 int ncur = cur + 1; 2119 int ncur = cur + 1;
664 2120
665 do 2121 do
666 ncur <<= 1; 2122 ncur <<= 1;
667 while (cnt > ncur); 2123 while (cnt > ncur);
668 2124
669 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 2125 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
670 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 2126 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
671 { 2127 {
672 ncur *= elem; 2128 ncur *= elem;
673 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 2129 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
674 ncur = ncur - sizeof (void *) * 4; 2130 ncur = ncur - sizeof (void *) * 4;
… …
676 } 2132 }
677 2133
678 return ncur; 2134 return ncur;
679} 2135}
680 2136
681static noinline void * 2137ecb_noinline ecb_cold
2138static void *
682array_realloc (int elem, void *base, int *cur, int cnt) 2139array_realloc (int elem, void *base, int *cur, int cnt)
683{ 2140{
684 *cur = array_nextsize (elem, *cur, cnt); 2141 *cur = array_nextsize (elem, *cur, cnt);
685 return ev_realloc (base, elem * *cur); 2142 return ev_realloc (base, elem * *cur);
686} 2143}
687 2144
2145#define array_needsize_noinit(base,offset,count)
2146
688#define array_init_zero(base,count) \ 2147#define array_needsize_zerofill(base,offset,count) \
689 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 2148 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
690 2149
691#define array_needsize(type,base,cur,cnt,init) \ 2150#define array_needsize(type,base,cur,cnt,init) \
692 if (expect_false ((cnt) > (cur))) \ 2151 if (ecb_expect_false ((cnt) > (cur))) \
693 { \ 2152 { \
694 int ocur_ = (cur); \ 2153 ecb_unused int ocur_ = (cur); \
695 (base) = (type *)array_realloc \ 2154 (base) = (type *)array_realloc \
696 (sizeof (type), (base), &(cur), (cnt)); \ 2155 (sizeof (type), (base), &(cur), (cnt)); \
697 init ((base) + (ocur_), (cur) - ocur_); \ 2156 init ((base), ocur_, ((cur) - ocur_)); \
698 } 2157 }
699 2158
700#if 0 2159#if 0
701#define array_slim(type,stem) \ 2160#define array_slim(type,stem) \
702 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2161 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
… …
711 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 2170 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
712 2171
713/*****************************************************************************/ 2172/*****************************************************************************/
714 2173
715/* dummy callback for pending events */ 2174/* dummy callback for pending events */
716static void noinline 2175ecb_noinline
2176static void
717pendingcb (EV_P_ ev_prepare *w, int revents) 2177pendingcb (EV_P_ ev_prepare *w, int revents)
718{ 2178{
719} 2179}
720 2180
721void noinline 2181ecb_noinline
2182void
722ev_feed_event (EV_P_ void *w, int revents) 2183ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
723{ 2184{
724 W w_ = (W)w; 2185 W w_ = (W)w;
725 int pri = ABSPRI (w_); 2186 int pri = ABSPRI (w_);
726 2187
727 if (expect_false (w_->pending)) 2188 if (ecb_expect_false (w_->pending))
728 pendings [pri][w_->pending - 1].events |= revents; 2189 pendings [pri][w_->pending - 1].events |= revents;
729 else 2190 else
730 { 2191 {
731 w_->pending = ++pendingcnt [pri]; 2192 w_->pending = ++pendingcnt [pri];
732 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2193 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
733 pendings [pri][w_->pending - 1].w = w_; 2194 pendings [pri][w_->pending - 1].w = w_;
734 pendings [pri][w_->pending - 1].events = revents; 2195 pendings [pri][w_->pending - 1].events = revents;
735 } 2196 }
2197
2198 pendingpri = NUMPRI - 1;
736} 2199}
737 2200
738inline_speed void 2201inline_speed void
739feed_reverse (EV_P_ W w) 2202feed_reverse (EV_P_ W w)
740{ 2203{
741 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2204 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
742 rfeeds [rfeedcnt++] = w; 2205 rfeeds [rfeedcnt++] = w;
743} 2206}
744 2207
745inline_size void 2208inline_size void
746feed_reverse_done (EV_P_ int revents) 2209feed_reverse_done (EV_P_ int revents)
… …
760} 2223}
761 2224
762/*****************************************************************************/ 2225/*****************************************************************************/
763 2226
764inline_speed void 2227inline_speed void
765fd_event (EV_P_ int fd, int revents) 2228fd_event_nocheck (EV_P_ int fd, int revents)
766{ 2229{
767 ANFD *anfd = anfds + fd; 2230 ANFD *anfd = anfds + fd;
768 ev_io *w; 2231 ev_io *w;
769 2232
770 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2233 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
774 if (ev) 2237 if (ev)
775 ev_feed_event (EV_A_ (W)w, ev); 2238 ev_feed_event (EV_A_ (W)w, ev);
776 } 2239 }
777} 2240}
778 2241
779void 2242/* do not submit kernel events for fds that have reify set */
2243/* because that means they changed while we were polling for new events */
2244inline_speed void
780ev_feed_fd_event (EV_P_ int fd, int revents) 2245fd_event (EV_P_ int fd, int revents)
2246{
2247 ANFD *anfd = anfds + fd;
2248
2249 if (ecb_expect_true (!anfd->reify))
2250 fd_event_nocheck (EV_A_ fd, revents);
2251}
2252
2253void
2254ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
781{ 2255{
782 if (fd >= 0 && fd < anfdmax) 2256 if (fd >= 0 && fd < anfdmax)
783 fd_event (EV_A_ fd, revents); 2257 fd_event_nocheck (EV_A_ fd, revents);
784} 2258}
785 2259
786/* make sure the external fd watch events are in-sync */ 2260/* make sure the external fd watch events are in-sync */
787/* with the kernel/libev internal state */ 2261/* with the kernel/libev internal state */
788inline_size void 2262inline_size void
789fd_reify (EV_P) 2263fd_reify (EV_P)
790{ 2264{
791 int i; 2265 int i;
792 2266
2267#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
2268 for (i = 0; i < fdchangecnt; ++i)
2269 {
2270 int fd = fdchanges [i];
2271 ANFD *anfd = anfds + fd;
2272
2273 if (anfd->reify & EV__IOFDSET && anfd->head)
2274 {
2275 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
2276
2277 if (handle != anfd->handle)
2278 {
2279 unsigned long arg;
2280
2281 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
2282
2283 /* handle changed, but fd didn't - we need to do it in two steps */
2284 backend_modify (EV_A_ fd, anfd->events, 0);
2285 anfd->events = 0;
2286 anfd->handle = handle;
2287 }
2288 }
2289 }
2290#endif
2291
793 for (i = 0; i < fdchangecnt; ++i) 2292 for (i = 0; i < fdchangecnt; ++i)
794 { 2293 {
795 int fd = fdchanges [i]; 2294 int fd = fdchanges [i];
796 ANFD *anfd = anfds + fd; 2295 ANFD *anfd = anfds + fd;
797 ev_io *w; 2296 ev_io *w;
798 2297
799 unsigned char events = 0; 2298 unsigned char o_events = anfd->events;
2299 unsigned char o_reify = anfd->reify;
800 2300
801 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2301 anfd->reify = 0;
802 events |= (unsigned char)w->events;
803 2302
804#if EV_SELECT_IS_WINSOCKET 2303 /*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
805 if (events)
806 { 2304 {
807 unsigned long arg; 2305 anfd->events = 0;
808 #ifdef EV_FD_TO_WIN32_HANDLE 2306
809 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 2307 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
810 #else 2308 anfd->events |= (unsigned char)w->events;
811 anfd->handle = _get_osfhandle (fd); 2309
812 #endif 2310 if (o_events != anfd->events)
813 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 2311 o_reify = EV__IOFDSET; /* actually |= */
814 } 2312 }
815#endif
816 2313
817 { 2314 if (o_reify & EV__IOFDSET)
818 unsigned char o_events = anfd->events;
819 unsigned char o_reify = anfd->reify;
820
821 anfd->reify = 0;
822 anfd->events = events;
823
824 if (o_events != events || o_reify & EV__IOFDSET)
825 backend_modify (EV_A_ fd, o_events, events); 2315 backend_modify (EV_A_ fd, o_events, anfd->events);
826 }
827 } 2316 }
828 2317
829 fdchangecnt = 0; 2318 fdchangecnt = 0;
830} 2319}
831 2320
832/* something about the given fd changed */ 2321/* something about the given fd changed */
833inline_size void 2322inline_size
2323void
834fd_change (EV_P_ int fd, int flags) 2324fd_change (EV_P_ int fd, int flags)
835{ 2325{
836 unsigned char reify = anfds [fd].reify; 2326 unsigned char reify = anfds [fd].reify;
837 anfds [fd].reify |= flags; 2327 anfds [fd].reify |= flags;
838 2328
839 if (expect_true (!reify)) 2329 if (ecb_expect_true (!reify))
840 { 2330 {
841 ++fdchangecnt; 2331 ++fdchangecnt;
842 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2332 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
843 fdchanges [fdchangecnt - 1] = fd; 2333 fdchanges [fdchangecnt - 1] = fd;
844 } 2334 }
845} 2335}
846 2336
847/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2337/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
848inline_speed void 2338inline_speed ecb_cold void
849fd_kill (EV_P_ int fd) 2339fd_kill (EV_P_ int fd)
850{ 2340{
851 ev_io *w; 2341 ev_io *w;
852 2342
853 while ((w = (ev_io *)anfds [fd].head)) 2343 while ((w = (ev_io *)anfds [fd].head))
… …
855 ev_io_stop (EV_A_ w); 2345 ev_io_stop (EV_A_ w);
856 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2346 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
857 } 2347 }
858} 2348}
859 2349
860/* check whether the given fd is atcually valid, for error recovery */ 2350/* check whether the given fd is actually valid, for error recovery */
861inline_size int 2351inline_size ecb_cold int
862fd_valid (int fd) 2352fd_valid (int fd)
863{ 2353{
864#ifdef _WIN32 2354#ifdef _WIN32
865 return _get_osfhandle (fd) != -1; 2355 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
866#else 2356#else
867 return fcntl (fd, F_GETFD) != -1; 2357 return fcntl (fd, F_GETFD) != -1;
868#endif 2358#endif
869} 2359}
870 2360
871/* called on EBADF to verify fds */ 2361/* called on EBADF to verify fds */
872static void noinline 2362ecb_noinline ecb_cold
2363static void
873fd_ebadf (EV_P) 2364fd_ebadf (EV_P)
874{ 2365{
875 int fd; 2366 int fd;
876 2367
877 for (fd = 0; fd < anfdmax; ++fd) 2368 for (fd = 0; fd < anfdmax; ++fd)
… …
879 if (!fd_valid (fd) && errno == EBADF) 2370 if (!fd_valid (fd) && errno == EBADF)
880 fd_kill (EV_A_ fd); 2371 fd_kill (EV_A_ fd);
881} 2372}
882 2373
883/* called on ENOMEM in select/poll to kill some fds and retry */ 2374/* called on ENOMEM in select/poll to kill some fds and retry */
884static void noinline 2375ecb_noinline ecb_cold
2376static void
885fd_enomem (EV_P) 2377fd_enomem (EV_P)
886{ 2378{
887 int fd; 2379 int fd;
888 2380
889 for (fd = anfdmax; fd--; ) 2381 for (fd = anfdmax; fd--; )
890 if (anfds [fd].events) 2382 if (anfds [fd].events)
891 { 2383 {
892 fd_kill (EV_A_ fd); 2384 fd_kill (EV_A_ fd);
893 return; 2385 break;
894 } 2386 }
895} 2387}
896 2388
897/* usually called after fork if backend needs to re-arm all fds from scratch */ 2389/* usually called after fork if backend needs to re-arm all fds from scratch */
898static void noinline 2390ecb_noinline
2391static void
899fd_rearm_all (EV_P) 2392fd_rearm_all (EV_P)
900{ 2393{
901 int fd; 2394 int fd;
902 2395
903 for (fd = 0; fd < anfdmax; ++fd) 2396 for (fd = 0; fd < anfdmax; ++fd)
904 if (anfds [fd].events) 2397 if (anfds [fd].events)
905 { 2398 {
906 anfds [fd].events = 0; 2399 anfds [fd].events = 0;
907 anfds [fd].emask = 0; 2400 anfds [fd].emask = 0;
908 fd_change (EV_A_ fd, EV__IOFDSET | 1); 2401 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
909 } 2402 }
910} 2403}
911 2404
2405/* used to prepare libev internal fd's */
2406/* this is not fork-safe */
2407inline_speed void
2408fd_intern (int fd)
2409{
2410#ifdef _WIN32
2411 unsigned long arg = 1;
2412 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
2413#else
2414 fcntl (fd, F_SETFD, FD_CLOEXEC);
2415 fcntl (fd, F_SETFL, O_NONBLOCK);
2416#endif
2417}
2418
912/*****************************************************************************/ 2419/*****************************************************************************/
913 2420
914/* 2421/*
915 * the heap functions want a real array index. array index 0 uis guaranteed to not 2422 * the heap functions want a real array index. array index 0 is guaranteed to not
916 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 2423 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
917 * the branching factor of the d-tree. 2424 * the branching factor of the d-tree.
918 */ 2425 */
919 2426
920/* 2427/*
… …
942 ev_tstamp minat; 2449 ev_tstamp minat;
943 ANHE *minpos; 2450 ANHE *minpos;
944 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; 2451 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
945 2452
946 /* find minimum child */ 2453 /* find minimum child */
947 if (expect_true (pos + DHEAP - 1 < E)) 2454 if (ecb_expect_true (pos + DHEAP - 1 < E))
948 { 2455 {
949 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2456 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
950 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2457 if ( minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
951 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2458 if ( minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
952 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2459 if ( minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
953 } 2460 }
954 else if (pos < E) 2461 else if (pos < E)
955 { 2462 {
956 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2463 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
957 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2464 if (pos + 1 < E && minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
958 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2465 if (pos + 2 < E && minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
959 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2466 if (pos + 3 < E && minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
960 } 2467 }
961 else 2468 else
962 break; 2469 break;
963 2470
964 if (ANHE_at (he) <= minat) 2471 if (ANHE_at (he) <= minat)
… …
972 2479
973 heap [k] = he; 2480 heap [k] = he;
974 ev_active (ANHE_w (he)) = k; 2481 ev_active (ANHE_w (he)) = k;
975} 2482}
976 2483
977#else /* 4HEAP */ 2484#else /* not 4HEAP */
978 2485
979#define HEAP0 1 2486#define HEAP0 1
980#define HPARENT(k) ((k) >> 1) 2487#define HPARENT(k) ((k) >> 1)
981#define UPHEAP_DONE(p,k) (!(p)) 2488#define UPHEAP_DONE(p,k) (!(p))
982 2489
… …
988 2495
989 for (;;) 2496 for (;;)
990 { 2497 {
991 int c = k << 1; 2498 int c = k << 1;
992 2499
993 if (c > N + HEAP0 - 1) 2500 if (c >= N + HEAP0)
994 break; 2501 break;
995 2502
996 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 2503 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
997 ? 1 : 0; 2504 ? 1 : 0;
998 2505
… …
1034 2541
1035/* move an element suitably so it is in a correct place */ 2542/* move an element suitably so it is in a correct place */
1036inline_size void 2543inline_size void
1037adjustheap (ANHE *heap, int N, int k) 2544adjustheap (ANHE *heap, int N, int k)
1038{ 2545{
1039 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 2546 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1040 upheap (heap, k); 2547 upheap (heap, k);
1041 else 2548 else
1042 downheap (heap, N, k); 2549 downheap (heap, N, k);
1043} 2550}
1044 2551
… …
1057/*****************************************************************************/ 2564/*****************************************************************************/
1058 2565
1059/* associate signal watchers to a signal signal */ 2566/* associate signal watchers to a signal signal */
1060typedef struct 2567typedef struct
1061{ 2568{
2569 EV_ATOMIC_T pending;
2570#if EV_MULTIPLICITY
2571 EV_P;
2572#endif
1062 WL head; 2573 WL head;
1063 EV_ATOMIC_T gotsig;
1064} ANSIG; 2574} ANSIG;
1065 2575
1066static ANSIG *signals; 2576static ANSIG signals [EV_NSIG - 1];
1067static int signalmax;
1068
1069static EV_ATOMIC_T gotsig;
1070 2577
1071/*****************************************************************************/ 2578/*****************************************************************************/
1072 2579
1073/* used to prepare libev internal fd's */ 2580#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1074/* this is not fork-safe */ 2581
2582ecb_noinline ecb_cold
2583static void
2584evpipe_init (EV_P)
2585{
2586 if (!ev_is_active (&pipe_w))
2587 {
2588 int fds [2];
2589
2590# if EV_USE_EVENTFD
2591 fds [0] = -1;
2592 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
2593 if (fds [1] < 0 && errno == EINVAL)
2594 fds [1] = eventfd (0, 0);
2595
2596 if (fds [1] < 0)
2597# endif
2598 {
2599 while (pipe (fds))
2600 ev_syserr ("(libev) error creating signal/async pipe");
2601
2602 fd_intern (fds [0]);
2603 }
2604
2605 evpipe [0] = fds [0];
2606
2607 if (evpipe [1] < 0)
2608 evpipe [1] = fds [1]; /* first call, set write fd */
2609 else
2610 {
2611 /* on subsequent calls, do not change evpipe [1] */
2612 /* so that evpipe_write can always rely on its value. */
2613 /* this branch does not do anything sensible on windows, */
2614 /* so must not be executed on windows */
2615
2616 dup2 (fds [1], evpipe [1]);
2617 close (fds [1]);
2618 }
2619
2620 fd_intern (evpipe [1]);
2621
2622 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2623 ev_io_start (EV_A_ &pipe_w);
2624 ev_unref (EV_A); /* watcher should not keep loop alive */
2625 }
2626}
2627
1075inline_speed void 2628inline_speed void
1076fd_intern (int fd) 2629evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1077{ 2630{
1078#ifdef _WIN32 2631 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1079 unsigned long arg = 1;
1080 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1081#else
1082 fcntl (fd, F_SETFD, FD_CLOEXEC);
1083 fcntl (fd, F_SETFL, O_NONBLOCK);
1084#endif
1085}
1086 2632
1087static void noinline 2633 if (ecb_expect_true (*flag))
1088evpipe_init (EV_P) 2634 return;
1089{ 2635
1090 if (!ev_is_active (&pipe_w)) 2636 *flag = 1;
2637 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2638
2639 pipe_write_skipped = 1;
2640
2641 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2642
2643 if (pipe_write_wanted)
1091 { 2644 {
2645 int old_errno;
2646
2647 pipe_write_skipped = 0;
2648 ECB_MEMORY_FENCE_RELEASE;
2649
2650 old_errno = errno; /* save errno because write will clobber it */
2651
1092#if EV_USE_EVENTFD 2652#if EV_USE_EVENTFD
1093 if ((evfd = eventfd (0, 0)) >= 0) 2653 if (evpipe [0] < 0)
1094 { 2654 {
1095 evpipe [0] = -1; 2655 uint64_t counter = 1;
1096 fd_intern (evfd); 2656 write (evpipe [1], &counter, sizeof (uint64_t));
1097 ev_io_set (&pipe_w, evfd, EV_READ);
1098 } 2657 }
1099 else 2658 else
1100#endif 2659#endif
1101 { 2660 {
1102 while (pipe (evpipe)) 2661#ifdef _WIN32
1103 ev_syserr ("(libev) error creating signal/async pipe"); 2662 WSABUF buf;
1104 2663 DWORD sent;
1105 fd_intern (evpipe [0]); 2664 buf.buf = (char *)&buf;
1106 fd_intern (evpipe [1]); 2665 buf.len = 1;
1107 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2666 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2667#else
2668 write (evpipe [1], &(evpipe [1]), 1);
2669#endif
1108 } 2670 }
1109
1110 ev_io_start (EV_A_ &pipe_w);
1111 ev_unref (EV_A); /* watcher should not keep loop alive */
1112 }
1113}
1114
1115inline_size void
1116evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1117{
1118 if (!*flag)
1119 {
1120 int old_errno = errno; /* save errno because write might clobber it */
1121
1122 *flag = 1;
1123
1124#if EV_USE_EVENTFD
1125 if (evfd >= 0)
1126 {
1127 uint64_t counter = 1;
1128 write (evfd, &counter, sizeof (uint64_t));
1129 }
1130 else
1131#endif
1132 write (evpipe [1], &old_errno, 1);
1133 2671
1134 errno = old_errno; 2672 errno = old_errno;
1135 } 2673 }
1136} 2674}
1137 2675
1138/* called whenever the libev signal pipe */ 2676/* called whenever the libev signal pipe */
1139/* got some events (signal, async) */ 2677/* got some events (signal, async) */
1140static void 2678static void
1141pipecb (EV_P_ ev_io *iow, int revents) 2679pipecb (EV_P_ ev_io *iow, int revents)
1142{ 2680{
2681 int i;
2682
2683 if (revents & EV_READ)
2684 {
1143#if EV_USE_EVENTFD 2685#if EV_USE_EVENTFD
1144 if (evfd >= 0) 2686 if (evpipe [0] < 0)
1145 { 2687 {
1146 uint64_t counter; 2688 uint64_t counter;
1147 read (evfd, &counter, sizeof (uint64_t)); 2689 read (evpipe [1], &counter, sizeof (uint64_t));
1148 } 2690 }
1149 else 2691 else
1150#endif 2692#endif
1151 { 2693 {
1152 char dummy; 2694 char dummy[4];
2695#ifdef _WIN32
2696 WSABUF buf;
2697 DWORD recvd;
2698 DWORD flags = 0;
2699 buf.buf = dummy;
2700 buf.len = sizeof (dummy);
2701 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2702#else
1153 read (evpipe [0], &dummy, 1); 2703 read (evpipe [0], &dummy, sizeof (dummy));
2704#endif
2705 }
2706 }
2707
2708 pipe_write_skipped = 0;
2709
2710 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2711
2712#if EV_SIGNAL_ENABLE
2713 if (sig_pending)
1154 } 2714 {
2715 sig_pending = 0;
1155 2716
1156 if (gotsig && ev_is_default_loop (EV_A)) 2717 ECB_MEMORY_FENCE;
1157 {
1158 int signum;
1159 gotsig = 0;
1160 2718
1161 for (signum = signalmax; signum--; ) 2719 for (i = EV_NSIG - 1; i--; )
1162 if (signals [signum].gotsig) 2720 if (ecb_expect_false (signals [i].pending))
1163 ev_feed_signal_event (EV_A_ signum + 1); 2721 ev_feed_signal_event (EV_A_ i + 1);
1164 } 2722 }
2723#endif
1165 2724
1166#if EV_ASYNC_ENABLE 2725#if EV_ASYNC_ENABLE
1167 if (gotasync) 2726 if (async_pending)
1168 { 2727 {
1169 int i; 2728 async_pending = 0;
1170 gotasync = 0; 2729
2730 ECB_MEMORY_FENCE;
1171 2731
1172 for (i = asynccnt; i--; ) 2732 for (i = asynccnt; i--; )
1173 if (asyncs [i]->sent) 2733 if (asyncs [i]->sent)
1174 { 2734 {
1175 asyncs [i]->sent = 0; 2735 asyncs [i]->sent = 0;
2736 ECB_MEMORY_FENCE_RELEASE;
1176 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2737 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1177 } 2738 }
1178 } 2739 }
1179#endif 2740#endif
1180} 2741}
1181 2742
1182/*****************************************************************************/ 2743/*****************************************************************************/
1183 2744
2745void
2746ev_feed_signal (int signum) EV_NOEXCEPT
2747{
2748#if EV_MULTIPLICITY
2749 EV_P;
2750 ECB_MEMORY_FENCE_ACQUIRE;
2751 EV_A = signals [signum - 1].loop;
2752
2753 if (!EV_A)
2754 return;
2755#endif
2756
2757 signals [signum - 1].pending = 1;
2758 evpipe_write (EV_A_ &sig_pending);
2759}
2760
1184static void 2761static void
1185ev_sighandler (int signum) 2762ev_sighandler (int signum)
1186{ 2763{
2764#ifdef _WIN32
2765 signal (signum, ev_sighandler);
2766#endif
2767
2768 ev_feed_signal (signum);
2769}
2770
2771ecb_noinline
2772void
2773ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
2774{
2775 WL w;
2776
2777 if (ecb_expect_false (signum <= 0 || signum >= EV_NSIG))
2778 return;
2779
2780 --signum;
2781
1187#if EV_MULTIPLICITY 2782#if EV_MULTIPLICITY
1188 struct ev_loop *loop = &default_loop_struct; 2783 /* it is permissible to try to feed a signal to the wrong loop */
1189#endif 2784 /* or, likely more useful, feeding a signal nobody is waiting for */
1190 2785
1191#if _WIN32 2786 if (ecb_expect_false (signals [signum].loop != EV_A))
1192 signal (signum, ev_sighandler);
1193#endif
1194
1195 signals [signum - 1].gotsig = 1;
1196 evpipe_write (EV_A_ &gotsig);
1197}
1198
1199void noinline
1200ev_feed_signal_event (EV_P_ int signum)
1201{
1202 WL w;
1203
1204#if EV_MULTIPLICITY
1205 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1206#endif
1207
1208 --signum;
1209
1210 if (signum < 0 || signum >= signalmax)
1211 return; 2787 return;
2788#endif
1212 2789
1213 signals [signum].gotsig = 0; 2790 signals [signum].pending = 0;
2791 ECB_MEMORY_FENCE_RELEASE;
1214 2792
1215 for (w = signals [signum].head; w; w = w->next) 2793 for (w = signals [signum].head; w; w = w->next)
1216 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2794 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1217} 2795}
1218 2796
2797#if EV_USE_SIGNALFD
2798static void
2799sigfdcb (EV_P_ ev_io *iow, int revents)
2800{
2801 struct signalfd_siginfo si[2], *sip; /* these structs are big */
2802
2803 for (;;)
2804 {
2805 ssize_t res = read (sigfd, si, sizeof (si));
2806
2807 /* not ISO-C, as res might be -1, but works with SuS */
2808 for (sip = si; (char *)sip < (char *)si + res; ++sip)
2809 ev_feed_signal_event (EV_A_ sip->ssi_signo);
2810
2811 if (res < (ssize_t)sizeof (si))
2812 break;
2813 }
2814}
2815#endif
2816
2817#endif
2818
1219/*****************************************************************************/ 2819/*****************************************************************************/
1220 2820
2821#if EV_CHILD_ENABLE
1221static WL childs [EV_PID_HASHSIZE]; 2822static WL childs [EV_PID_HASHSIZE];
1222
1223#ifndef _WIN32
1224 2823
1225static ev_signal childev; 2824static ev_signal childev;
1226 2825
1227#ifndef WIFCONTINUED 2826#ifndef WIFCONTINUED
1228# define WIFCONTINUED(status) 0 2827# define WIFCONTINUED(status) 0
… …
1233child_reap (EV_P_ int chain, int pid, int status) 2832child_reap (EV_P_ int chain, int pid, int status)
1234{ 2833{
1235 ev_child *w; 2834 ev_child *w;
1236 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2835 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1237 2836
1238 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2837 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1239 { 2838 {
1240 if ((w->pid == pid || !w->pid) 2839 if ((w->pid == pid || !w->pid)
1241 && (!traced || (w->flags & 1))) 2840 && (!traced || (w->flags & 1)))
1242 { 2841 {
1243 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2842 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1268 /* make sure we are called again until all children have been reaped */ 2867 /* make sure we are called again until all children have been reaped */
1269 /* we need to do it this way so that the callback gets called before we continue */ 2868 /* we need to do it this way so that the callback gets called before we continue */
1270 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2869 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1271 2870
1272 child_reap (EV_A_ pid, pid, status); 2871 child_reap (EV_A_ pid, pid, status);
1273 if (EV_PID_HASHSIZE > 1) 2872 if ((EV_PID_HASHSIZE) > 1)
1274 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2873 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1275} 2874}
1276 2875
1277#endif 2876#endif
1278 2877
1279/*****************************************************************************/ 2878/*****************************************************************************/
1280 2879
2880#if EV_USE_TIMERFD
2881
2882static void periodics_reschedule (EV_P);
2883
2884static void
2885timerfdcb (EV_P_ ev_io *iow, int revents)
2886{
2887 struct itimerspec its = { 0 };
2888
2889 /* since we can't easily come zup with a (portable) maximum value of time_t,
2890 * we wake up once per month, which hopefully is rare enough to not
2891 * be a problem. */
2892 its.it_value.tv_sec = ev_rt_now + 86400 * 30;
2893 timerfd_settime (timerfd, TFD_TIMER_ABSTIME | TFD_TIMER_CANCEL_ON_SET, &its, 0);
2894
2895 ev_rt_now = ev_time ();
2896 /* periodics_reschedule only needs ev_rt_now */
2897 /* but maybe in the future we want the full treatment. */
2898 /*
2899 now_floor = EV_TS_CONST (0.);
2900 time_update (EV_A_ EV_TSTAMP_HUGE);
2901 */
2902 periodics_reschedule (EV_A);
2903}
2904
2905ecb_noinline ecb_cold
2906static void
2907evtimerfd_init (EV_P)
2908{
2909 if (!ev_is_active (&timerfd_w))
2910 {
2911 timerfd = timerfd_create (CLOCK_REALTIME, TFD_NONBLOCK | TFD_CLOEXEC);
2912
2913 if (timerfd >= 0)
2914 {
2915 fd_intern (timerfd); /* just to be sure */
2916
2917 ev_io_init (&timerfd_w, timerfdcb, timerfd, EV_READ);
2918 ev_set_priority (&timerfd_w, EV_MINPRI);
2919 ev_io_start (EV_A_ &timerfd_w);
2920 ev_unref (EV_A); /* watcher should not keep loop alive */
2921
2922 /* (re-) arm timer */
2923 timerfdcb (EV_A_ 0, 0);
2924 }
2925 }
2926}
2927
2928#endif
2929
2930/*****************************************************************************/
2931
2932#if EV_USE_IOCP
2933# include "ev_iocp.c"
2934#endif
1281#if EV_USE_PORT 2935#if EV_USE_PORT
1282# include "ev_port.c" 2936# include "ev_port.c"
1283#endif 2937#endif
1284#if EV_USE_KQUEUE 2938#if EV_USE_KQUEUE
1285# include "ev_kqueue.c" 2939# include "ev_kqueue.c"
1286#endif 2940#endif
1287#if EV_USE_EPOLL 2941#if EV_USE_EPOLL
1288# include "ev_epoll.c" 2942# include "ev_epoll.c"
1289#endif 2943#endif
2944#if EV_USE_LINUXAIO
2945# include "ev_linuxaio.c"
2946#endif
2947#if EV_USE_IOURING
2948# include "ev_iouring.c"
2949#endif
1290#if EV_USE_POLL 2950#if EV_USE_POLL
1291# include "ev_poll.c" 2951# include "ev_poll.c"
1292#endif 2952#endif
1293#if EV_USE_SELECT 2953#if EV_USE_SELECT
1294# include "ev_select.c" 2954# include "ev_select.c"
1295#endif 2955#endif
1296 2956
1297int 2957ecb_cold int
1298ev_version_major (void) 2958ev_version_major (void) EV_NOEXCEPT
1299{ 2959{
1300 return EV_VERSION_MAJOR; 2960 return EV_VERSION_MAJOR;
1301} 2961}
1302 2962
1303int 2963ecb_cold int
1304ev_version_minor (void) 2964ev_version_minor (void) EV_NOEXCEPT
1305{ 2965{
1306 return EV_VERSION_MINOR; 2966 return EV_VERSION_MINOR;
1307} 2967}
1308 2968
1309/* return true if we are running with elevated privileges and should ignore env variables */ 2969/* return true if we are running with elevated privileges and should ignore env variables */
1310int inline_size 2970inline_size ecb_cold int
1311enable_secure (void) 2971enable_secure (void)
1312{ 2972{
1313#ifdef _WIN32 2973#ifdef _WIN32
1314 return 0; 2974 return 0;
1315#else 2975#else
1316 return getuid () != geteuid () 2976 return getuid () != geteuid ()
1317 || getgid () != getegid (); 2977 || getgid () != getegid ();
1318#endif 2978#endif
1319} 2979}
1320 2980
2981ecb_cold
1321unsigned int 2982unsigned int
1322ev_supported_backends (void) 2983ev_supported_backends (void) EV_NOEXCEPT
1323{ 2984{
1324 unsigned int flags = 0; 2985 unsigned int flags = 0;
1325 2986
1326 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2987 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1327 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2988 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
1328 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 2989 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2990 if (EV_USE_LINUXAIO) flags |= EVBACKEND_LINUXAIO;
2991 if (EV_USE_IOURING ) flags |= EVBACKEND_IOURING;
1329 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 2992 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
1330 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2993 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
1331 2994
1332 return flags; 2995 return flags;
1333} 2996}
1334 2997
2998ecb_cold
1335unsigned int 2999unsigned int
1336ev_recommended_backends (void) 3000ev_recommended_backends (void) EV_NOEXCEPT
1337{ 3001{
1338 unsigned int flags = ev_supported_backends (); 3002 unsigned int flags = ev_supported_backends ();
1339 3003
1340#ifndef __NetBSD__ 3004#ifndef __NetBSD__
1341 /* kqueue is borked on everything but netbsd apparently */ 3005 /* kqueue is borked on everything but netbsd apparently */
… …
1345#ifdef __APPLE__ 3009#ifdef __APPLE__
1346 /* only select works correctly on that "unix-certified" platform */ 3010 /* only select works correctly on that "unix-certified" platform */
1347 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 3011 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1348 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 3012 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1349#endif 3013#endif
3014#ifdef __FreeBSD__
3015 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
3016#endif
3017
3018 /* TODO: linuxaio is very experimental */
3019#if !EV_RECOMMEND_LINUXAIO
3020 flags &= ~EVBACKEND_LINUXAIO;
3021#endif
3022 /* TODO: linuxaio is super experimental */
3023#if !EV_RECOMMEND_IOURING
3024 flags &= ~EVBACKEND_IOURING;
3025#endif
1350 3026
1351 return flags; 3027 return flags;
1352} 3028}
1353 3029
3030ecb_cold
1354unsigned int 3031unsigned int
1355ev_embeddable_backends (void) 3032ev_embeddable_backends (void) EV_NOEXCEPT
1356{ 3033{
1357 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 3034 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1358 3035
1359 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 3036 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1360 /* please fix it and tell me how to detect the fix */ 3037 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1361 flags &= ~EVBACKEND_EPOLL; 3038 flags &= ~EVBACKEND_EPOLL;
3039
3040 /* EVBACKEND_LINUXAIO is theoretically embeddable, but suffers from a performance overhead */
3041
3042 /* EVBACKEND_IOURING is practically embeddable, but the current implementation is not
3043 * because our backend_fd is the epoll fd we need as fallback.
3044 * if the kernel ever is fixed, this might change...
3045 */
1362 3046
1363 return flags; 3047 return flags;
1364} 3048}
1365 3049
1366unsigned int 3050unsigned int
1367ev_backend (EV_P) 3051ev_backend (EV_P) EV_NOEXCEPT
1368{ 3052{
1369 return backend; 3053 return backend;
1370} 3054}
1371 3055
1372#if EV_MINIMAL < 2 3056#if EV_FEATURE_API
1373unsigned int 3057unsigned int
1374ev_loop_count (EV_P) 3058ev_iteration (EV_P) EV_NOEXCEPT
1375{ 3059{
1376 return loop_count; 3060 return loop_count;
1377} 3061}
1378 3062
1379unsigned int 3063unsigned int
1380ev_loop_depth (EV_P) 3064ev_depth (EV_P) EV_NOEXCEPT
1381{ 3065{
1382 return loop_depth; 3066 return loop_depth;
1383} 3067}
1384 3068
1385void 3069void
1386ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 3070ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1387{ 3071{
1388 io_blocktime = interval; 3072 io_blocktime = interval;
1389} 3073}
1390 3074
1391void 3075void
1392ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 3076ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1393{ 3077{
1394 timeout_blocktime = interval; 3078 timeout_blocktime = interval;
1395} 3079}
1396 3080
1397void 3081void
1398ev_set_userdata (EV_P_ void *data) 3082ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
1399{ 3083{
1400 userdata = data; 3084 userdata = data;
1401} 3085}
1402 3086
1403void * 3087void *
1404ev_userdata (EV_P) 3088ev_userdata (EV_P) EV_NOEXCEPT
1405{ 3089{
1406 return userdata; 3090 return userdata;
1407} 3091}
1408 3092
3093void
1409void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 3094ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
1410{ 3095{
1411 invoke_cb = invoke_pending_cb; 3096 invoke_cb = invoke_pending_cb;
1412} 3097}
1413 3098
1414void ev_set_blocking_cb (EV_P_ void (*suspend_cb_)(EV_P), void (*resume_cb_)(EV_P)) 3099void
3100ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
1415{ 3101{
1416 suspend_cb = suspend_cb_; 3102 release_cb = release;
1417 resume_cb = resume_cb_; 3103 acquire_cb = acquire;
1418} 3104}
1419#endif 3105#endif
1420 3106
1421/* initialise a loop structure, must be zero-initialised */ 3107/* initialise a loop structure, must be zero-initialised */
1422static void noinline 3108ecb_noinline ecb_cold
3109static void
1423loop_init (EV_P_ unsigned int flags) 3110loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
1424{ 3111{
1425 if (!backend) 3112 if (!backend)
1426 { 3113 {
3114 origflags = flags;
3115
1427#if EV_USE_REALTIME 3116#if EV_USE_REALTIME
1428 if (!have_realtime) 3117 if (!have_realtime)
1429 { 3118 {
1430 struct timespec ts; 3119 struct timespec ts;
1431 3120
… …
1442 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 3131 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1443 have_monotonic = 1; 3132 have_monotonic = 1;
1444 } 3133 }
1445#endif 3134#endif
1446 3135
1447 ev_rt_now = ev_time ();
1448 mn_now = get_clock ();
1449 now_floor = mn_now;
1450 rtmn_diff = ev_rt_now - mn_now;
1451#if EV_MINIMAL < 2
1452 invoke_cb = ev_invoke_pending;
1453#endif
1454
1455 io_blocktime = 0.;
1456 timeout_blocktime = 0.;
1457 backend = 0;
1458 backend_fd = -1;
1459 gotasync = 0;
1460#if EV_USE_INOTIFY
1461 fs_fd = -2;
1462#endif
1463
1464 /* pid check not overridable via env */ 3136 /* pid check not overridable via env */
1465#ifndef _WIN32 3137#ifndef _WIN32
1466 if (flags & EVFLAG_FORKCHECK) 3138 if (flags & EVFLAG_FORKCHECK)
1467 curpid = getpid (); 3139 curpid = getpid ();
1468#endif 3140#endif
… …
1470 if (!(flags & EVFLAG_NOENV) 3142 if (!(flags & EVFLAG_NOENV)
1471 && !enable_secure () 3143 && !enable_secure ()
1472 && getenv ("LIBEV_FLAGS")) 3144 && getenv ("LIBEV_FLAGS"))
1473 flags = atoi (getenv ("LIBEV_FLAGS")); 3145 flags = atoi (getenv ("LIBEV_FLAGS"));
1474 3146
1475 if (!(flags & 0x0000ffffU)) 3147 ev_rt_now = ev_time ();
3148 mn_now = get_clock ();
3149 now_floor = mn_now;
3150 rtmn_diff = ev_rt_now - mn_now;
3151#if EV_FEATURE_API
3152 invoke_cb = ev_invoke_pending;
3153#endif
3154
3155 io_blocktime = 0.;
3156 timeout_blocktime = 0.;
3157 backend = 0;
3158 backend_fd = -1;
3159 sig_pending = 0;
3160#if EV_ASYNC_ENABLE
3161 async_pending = 0;
3162#endif
3163 pipe_write_skipped = 0;
3164 pipe_write_wanted = 0;
3165 evpipe [0] = -1;
3166 evpipe [1] = -1;
3167#if EV_USE_INOTIFY
3168 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
3169#endif
3170#if EV_USE_SIGNALFD
3171 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
3172#endif
3173#if EV_USE_TIMERFD
3174 timerfd = flags & EVFLAG_NOTIMERFD ? -1 : -2;
3175#endif
3176
3177 if (!(flags & EVBACKEND_MASK))
1476 flags |= ev_recommended_backends (); 3178 flags |= ev_recommended_backends ();
1477 3179
3180#if EV_USE_IOCP
3181 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
3182#endif
1478#if EV_USE_PORT 3183#if EV_USE_PORT
1479 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 3184 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1480#endif 3185#endif
1481#if EV_USE_KQUEUE 3186#if EV_USE_KQUEUE
1482 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 3187 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
3188#endif
3189#if EV_USE_IOURING
3190 if (!backend && (flags & EVBACKEND_IOURING )) backend = iouring_init (EV_A_ flags);
3191#endif
3192#if EV_USE_LINUXAIO
3193 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
1483#endif 3194#endif
1484#if EV_USE_EPOLL 3195#if EV_USE_EPOLL
1485 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 3196 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
1486#endif 3197#endif
1487#if EV_USE_POLL 3198#if EV_USE_POLL
1488 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 3199 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
1489#endif 3200#endif
1490#if EV_USE_SELECT 3201#if EV_USE_SELECT
1491 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 3202 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
1492#endif 3203#endif
1493 3204
1494 ev_prepare_init (&pending_w, pendingcb); 3205 ev_prepare_init (&pending_w, pendingcb);
1495 3206
3207#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1496 ev_init (&pipe_w, pipecb); 3208 ev_init (&pipe_w, pipecb);
1497 ev_set_priority (&pipe_w, EV_MAXPRI); 3209 ev_set_priority (&pipe_w, EV_MAXPRI);
3210#endif
1498 } 3211 }
1499} 3212}
1500 3213
1501/* free up a loop structure */ 3214/* free up a loop structure */
1502static void noinline 3215ecb_cold
3216void
1503loop_destroy (EV_P) 3217ev_loop_destroy (EV_P)
1504{ 3218{
1505 int i; 3219 int i;
1506 3220
3221#if EV_MULTIPLICITY
3222 /* mimic free (0) */
3223 if (!EV_A)
3224 return;
3225#endif
3226
3227#if EV_CLEANUP_ENABLE
3228 /* queue cleanup watchers (and execute them) */
3229 if (ecb_expect_false (cleanupcnt))
3230 {
3231 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
3232 EV_INVOKE_PENDING;
3233 }
3234#endif
3235
3236#if EV_CHILD_ENABLE
3237 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
3238 {
3239 ev_ref (EV_A); /* child watcher */
3240 ev_signal_stop (EV_A_ &childev);
3241 }
3242#endif
3243
1507 if (ev_is_active (&pipe_w)) 3244 if (ev_is_active (&pipe_w))
1508 { 3245 {
1509 ev_ref (EV_A); /* signal watcher */ 3246 /*ev_ref (EV_A);*/
1510 ev_io_stop (EV_A_ &pipe_w); 3247 /*ev_io_stop (EV_A_ &pipe_w);*/
1511 3248
3249 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
3250 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
3251 }
3252
3253#if EV_USE_SIGNALFD
3254 if (ev_is_active (&sigfd_w))
3255 close (sigfd);
3256#endif
3257
1512#if EV_USE_EVENTFD 3258#if EV_USE_TIMERFD
1513 if (evfd >= 0) 3259 if (ev_is_active (&timerfd_w))
1514 close (evfd); 3260 close (timerfd);
1515#endif 3261#endif
1516
1517 if (evpipe [0] >= 0)
1518 {
1519 close (evpipe [0]);
1520 close (evpipe [1]);
1521 }
1522 }
1523 3262
1524#if EV_USE_INOTIFY 3263#if EV_USE_INOTIFY
1525 if (fs_fd >= 0) 3264 if (fs_fd >= 0)
1526 close (fs_fd); 3265 close (fs_fd);
1527#endif 3266#endif
1528 3267
1529 if (backend_fd >= 0) 3268 if (backend_fd >= 0)
1530 close (backend_fd); 3269 close (backend_fd);
1531 3270
3271#if EV_USE_IOCP
3272 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
3273#endif
1532#if EV_USE_PORT 3274#if EV_USE_PORT
1533 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3275 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1534#endif 3276#endif
1535#if EV_USE_KQUEUE 3277#if EV_USE_KQUEUE
1536 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3278 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
3279#endif
3280#if EV_USE_IOURING
3281 if (backend == EVBACKEND_IOURING ) iouring_destroy (EV_A);
3282#endif
3283#if EV_USE_LINUXAIO
3284 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
1537#endif 3285#endif
1538#if EV_USE_EPOLL 3286#if EV_USE_EPOLL
1539 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3287 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
1540#endif 3288#endif
1541#if EV_USE_POLL 3289#if EV_USE_POLL
1542 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3290 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
1543#endif 3291#endif
1544#if EV_USE_SELECT 3292#if EV_USE_SELECT
1545 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3293 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
1546#endif 3294#endif
1547 3295
1548 for (i = NUMPRI; i--; ) 3296 for (i = NUMPRI; i--; )
1549 { 3297 {
1550 array_free (pending, [i]); 3298 array_free (pending, [i]);
1551#if EV_IDLE_ENABLE 3299#if EV_IDLE_ENABLE
1552 array_free (idle, [i]); 3300 array_free (idle, [i]);
1553#endif 3301#endif
1554 } 3302 }
1555 3303
1556 ev_free (anfds); anfdmax = 0; 3304 ev_free (anfds); anfds = 0; anfdmax = 0;
1557 3305
1558 /* have to use the microsoft-never-gets-it-right macro */ 3306 /* have to use the microsoft-never-gets-it-right macro */
1559 array_free (rfeed, EMPTY); 3307 array_free (rfeed, EMPTY);
1560 array_free (fdchange, EMPTY); 3308 array_free (fdchange, EMPTY);
1561 array_free (timer, EMPTY); 3309 array_free (timer, EMPTY);
… …
1563 array_free (periodic, EMPTY); 3311 array_free (periodic, EMPTY);
1564#endif 3312#endif
1565#if EV_FORK_ENABLE 3313#if EV_FORK_ENABLE
1566 array_free (fork, EMPTY); 3314 array_free (fork, EMPTY);
1567#endif 3315#endif
3316#if EV_CLEANUP_ENABLE
3317 array_free (cleanup, EMPTY);
3318#endif
1568 array_free (prepare, EMPTY); 3319 array_free (prepare, EMPTY);
1569 array_free (check, EMPTY); 3320 array_free (check, EMPTY);
1570#if EV_ASYNC_ENABLE 3321#if EV_ASYNC_ENABLE
1571 array_free (async, EMPTY); 3322 array_free (async, EMPTY);
1572#endif 3323#endif
1573 3324
1574 backend = 0; 3325 backend = 0;
3326
3327#if EV_MULTIPLICITY
3328 if (ev_is_default_loop (EV_A))
3329#endif
3330 ev_default_loop_ptr = 0;
3331#if EV_MULTIPLICITY
3332 else
3333 ev_free (EV_A);
3334#endif
1575} 3335}
1576 3336
1577#if EV_USE_INOTIFY 3337#if EV_USE_INOTIFY
1578inline_size void infy_fork (EV_P); 3338inline_size void infy_fork (EV_P);
1579#endif 3339#endif
1580 3340
1581inline_size void 3341inline_size void
1582loop_fork (EV_P) 3342loop_fork (EV_P)
1583{ 3343{
1584#if EV_USE_PORT 3344#if EV_USE_PORT
1585 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3345 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1586#endif 3346#endif
1587#if EV_USE_KQUEUE 3347#if EV_USE_KQUEUE
1588 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 3348 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
3349#endif
3350#if EV_USE_IOURING
3351 if (backend == EVBACKEND_IOURING ) iouring_fork (EV_A);
3352#endif
3353#if EV_USE_LINUXAIO
3354 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
1589#endif 3355#endif
1590#if EV_USE_EPOLL 3356#if EV_USE_EPOLL
1591 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3357 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
1592#endif 3358#endif
1593#if EV_USE_INOTIFY 3359#if EV_USE_INOTIFY
1594 infy_fork (EV_A); 3360 infy_fork (EV_A);
1595#endif 3361#endif
1596 3362
3363 if (postfork != 2)
3364 {
3365 #if EV_USE_SIGNALFD
3366 /* surprisingly, nothing needs to be done for signalfd, accoridng to docs, it does the right thing on fork */
3367 #endif
3368
3369 #if EV_USE_TIMERFD
3370 if (ev_is_active (&timerfd_w))
3371 {
3372 ev_ref (EV_A);
3373 ev_io_stop (EV_A_ &timerfd_w);
3374
3375 close (timerfd);
3376 timerfd = -2;
3377
3378 evtimerfd_init (EV_A);
3379 /* reschedule periodics, in case we missed something */
3380 ev_feed_event (EV_A_ &timerfd_w, EV_CUSTOM);
3381 }
3382 #endif
3383
3384 #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1597 if (ev_is_active (&pipe_w)) 3385 if (ev_is_active (&pipe_w))
1598 { 3386 {
1599 /* this "locks" the handlers against writing to the pipe */ 3387 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1600 /* while we modify the fd vars */ 3388
1601 gotsig = 1;
1602#if EV_ASYNC_ENABLE
1603 gotasync = 1;
1604#endif
1605
1606 ev_ref (EV_A); 3389 ev_ref (EV_A);
1607 ev_io_stop (EV_A_ &pipe_w); 3390 ev_io_stop (EV_A_ &pipe_w);
1608 3391
1609#if EV_USE_EVENTFD
1610 if (evfd >= 0)
1611 close (evfd);
1612#endif
1613
1614 if (evpipe [0] >= 0) 3392 if (evpipe [0] >= 0)
3393 EV_WIN32_CLOSE_FD (evpipe [0]);
1615 { 3394
1616 close (evpipe [0]); 3395 evpipe_init (EV_A);
1617 close (evpipe [1]); 3396 /* iterate over everything, in case we missed something before */
3397 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1618 } 3398 }
1619 3399 #endif
1620 evpipe_init (EV_A);
1621 /* now iterate over everything, in case we missed something */
1622 pipecb (EV_A_ &pipe_w, EV_READ);
1623 } 3400 }
1624 3401
1625 postfork = 0; 3402 postfork = 0;
1626} 3403}
1627 3404
1628#if EV_MULTIPLICITY 3405#if EV_MULTIPLICITY
1629 3406
3407ecb_cold
1630struct ev_loop * 3408struct ev_loop *
1631ev_loop_new (unsigned int flags) 3409ev_loop_new (unsigned int flags) EV_NOEXCEPT
1632{ 3410{
1633 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3411 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1634 3412
1635 memset (loop, 0, sizeof (struct ev_loop)); 3413 memset (EV_A, 0, sizeof (struct ev_loop));
1636
1637 loop_init (EV_A_ flags); 3414 loop_init (EV_A_ flags);
1638 3415
1639 if (ev_backend (EV_A)) 3416 if (ev_backend (EV_A))
1640 return loop; 3417 return EV_A;
1641 3418
3419 ev_free (EV_A);
1642 return 0; 3420 return 0;
1643} 3421}
1644 3422
1645void
1646ev_loop_destroy (EV_P)
1647{
1648 loop_destroy (EV_A);
1649 ev_free (loop);
1650}
1651
1652void
1653ev_loop_fork (EV_P)
1654{
1655 postfork = 1; /* must be in line with ev_default_fork */
1656}
1657#endif /* multiplicity */ 3423#endif /* multiplicity */
1658 3424
1659#if EV_VERIFY 3425#if EV_VERIFY
1660static void noinline 3426ecb_noinline ecb_cold
3427static void
1661verify_watcher (EV_P_ W w) 3428verify_watcher (EV_P_ W w)
1662{ 3429{
1663 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3430 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1664 3431
1665 if (w->pending) 3432 if (w->pending)
1666 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3433 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1667} 3434}
1668 3435
1669static void noinline 3436ecb_noinline ecb_cold
3437static void
1670verify_heap (EV_P_ ANHE *heap, int N) 3438verify_heap (EV_P_ ANHE *heap, int N)
1671{ 3439{
1672 int i; 3440 int i;
1673 3441
1674 for (i = HEAP0; i < N + HEAP0; ++i) 3442 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1679 3447
1680 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3448 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1681 } 3449 }
1682} 3450}
1683 3451
1684static void noinline 3452ecb_noinline ecb_cold
3453static void
1685array_verify (EV_P_ W *ws, int cnt) 3454array_verify (EV_P_ W *ws, int cnt)
1686{ 3455{
1687 while (cnt--) 3456 while (cnt--)
1688 { 3457 {
1689 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3458 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1690 verify_watcher (EV_A_ ws [cnt]); 3459 verify_watcher (EV_A_ ws [cnt]);
1691 } 3460 }
1692} 3461}
1693#endif 3462#endif
1694 3463
1695#if EV_MINIMAL < 2 3464#if EV_FEATURE_API
1696void 3465void ecb_cold
1697ev_loop_verify (EV_P) 3466ev_verify (EV_P) EV_NOEXCEPT
1698{ 3467{
1699#if EV_VERIFY 3468#if EV_VERIFY
1700 int i; 3469 int i;
1701 WL w; 3470 WL w, w2;
1702 3471
1703 assert (activecnt >= -1); 3472 assert (activecnt >= -1);
1704 3473
1705 assert (fdchangemax >= fdchangecnt); 3474 assert (fdchangemax >= fdchangecnt);
1706 for (i = 0; i < fdchangecnt; ++i) 3475 for (i = 0; i < fdchangecnt; ++i)
1707 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3476 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1708 3477
1709 assert (anfdmax >= 0); 3478 assert (anfdmax >= 0);
1710 for (i = 0; i < anfdmax; ++i) 3479 for (i = 0; i < anfdmax; ++i)
3480 {
3481 int j = 0;
3482
1711 for (w = anfds [i].head; w; w = w->next) 3483 for (w = w2 = anfds [i].head; w; w = w->next)
1712 { 3484 {
1713 verify_watcher (EV_A_ (W)w); 3485 verify_watcher (EV_A_ (W)w);
3486
3487 if (j++ & 1)
3488 {
3489 assert (("libev: io watcher list contains a loop", w != w2));
3490 w2 = w2->next;
3491 }
3492
1714 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3493 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1715 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 3494 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1716 } 3495 }
3496 }
1717 3497
1718 assert (timermax >= timercnt); 3498 assert (timermax >= timercnt);
1719 verify_heap (EV_A_ timers, timercnt); 3499 verify_heap (EV_A_ timers, timercnt);
1720 3500
1721#if EV_PERIODIC_ENABLE 3501#if EV_PERIODIC_ENABLE
… …
1736#if EV_FORK_ENABLE 3516#if EV_FORK_ENABLE
1737 assert (forkmax >= forkcnt); 3517 assert (forkmax >= forkcnt);
1738 array_verify (EV_A_ (W *)forks, forkcnt); 3518 array_verify (EV_A_ (W *)forks, forkcnt);
1739#endif 3519#endif
1740 3520
3521#if EV_CLEANUP_ENABLE
3522 assert (cleanupmax >= cleanupcnt);
3523 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
3524#endif
3525
1741#if EV_ASYNC_ENABLE 3526#if EV_ASYNC_ENABLE
1742 assert (asyncmax >= asynccnt); 3527 assert (asyncmax >= asynccnt);
1743 array_verify (EV_A_ (W *)asyncs, asynccnt); 3528 array_verify (EV_A_ (W *)asyncs, asynccnt);
1744#endif 3529#endif
1745 3530
3531#if EV_PREPARE_ENABLE
1746 assert (preparemax >= preparecnt); 3532 assert (preparemax >= preparecnt);
1747 array_verify (EV_A_ (W *)prepares, preparecnt); 3533 array_verify (EV_A_ (W *)prepares, preparecnt);
3534#endif
1748 3535
3536#if EV_CHECK_ENABLE
1749 assert (checkmax >= checkcnt); 3537 assert (checkmax >= checkcnt);
1750 array_verify (EV_A_ (W *)checks, checkcnt); 3538 array_verify (EV_A_ (W *)checks, checkcnt);
3539#endif
1751 3540
1752# if 0 3541# if 0
3542#if EV_CHILD_ENABLE
1753 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 3543 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1754 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 3544 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
3545#endif
1755# endif 3546# endif
1756#endif 3547#endif
1757} 3548}
1758#endif 3549#endif
1759 3550
1760#if EV_MULTIPLICITY 3551#if EV_MULTIPLICITY
3552ecb_cold
1761struct ev_loop * 3553struct ev_loop *
1762ev_default_loop_init (unsigned int flags)
1763#else 3554#else
1764int 3555int
3556#endif
1765ev_default_loop (unsigned int flags) 3557ev_default_loop (unsigned int flags) EV_NOEXCEPT
1766#endif
1767{ 3558{
1768 if (!ev_default_loop_ptr) 3559 if (!ev_default_loop_ptr)
1769 { 3560 {
1770#if EV_MULTIPLICITY 3561#if EV_MULTIPLICITY
1771 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 3562 EV_P = ev_default_loop_ptr = &default_loop_struct;
1772#else 3563#else
1773 ev_default_loop_ptr = 1; 3564 ev_default_loop_ptr = 1;
1774#endif 3565#endif
1775 3566
1776 loop_init (EV_A_ flags); 3567 loop_init (EV_A_ flags);
1777 3568
1778 if (ev_backend (EV_A)) 3569 if (ev_backend (EV_A))
1779 { 3570 {
1780#ifndef _WIN32 3571#if EV_CHILD_ENABLE
1781 ev_signal_init (&childev, childcb, SIGCHLD); 3572 ev_signal_init (&childev, childcb, SIGCHLD);
1782 ev_set_priority (&childev, EV_MAXPRI); 3573 ev_set_priority (&childev, EV_MAXPRI);
1783 ev_signal_start (EV_A_ &childev); 3574 ev_signal_start (EV_A_ &childev);
1784 ev_unref (EV_A); /* child watcher should not keep loop alive */ 3575 ev_unref (EV_A); /* child watcher should not keep loop alive */
1785#endif 3576#endif
… …
1790 3581
1791 return ev_default_loop_ptr; 3582 return ev_default_loop_ptr;
1792} 3583}
1793 3584
1794void 3585void
1795ev_default_destroy (void) 3586ev_loop_fork (EV_P) EV_NOEXCEPT
1796{ 3587{
1797#if EV_MULTIPLICITY 3588 postfork = 1;
1798 struct ev_loop *loop = ev_default_loop_ptr;
1799#endif
1800
1801 ev_default_loop_ptr = 0;
1802
1803#ifndef _WIN32
1804 ev_ref (EV_A); /* child watcher */
1805 ev_signal_stop (EV_A_ &childev);
1806#endif
1807
1808 loop_destroy (EV_A);
1809}
1810
1811void
1812ev_default_fork (void)
1813{
1814#if EV_MULTIPLICITY
1815 struct ev_loop *loop = ev_default_loop_ptr;
1816#endif
1817
1818 postfork = 1; /* must be in line with ev_loop_fork */
1819} 3589}
1820 3590
1821/*****************************************************************************/ 3591/*****************************************************************************/
1822 3592
1823void 3593void
1824ev_invoke (EV_P_ void *w, int revents) 3594ev_invoke (EV_P_ void *w, int revents)
1825{ 3595{
1826 EV_CB_INVOKE ((W)w, revents); 3596 EV_CB_INVOKE ((W)w, revents);
1827} 3597}
1828 3598
1829void noinline 3599unsigned int
3600ev_pending_count (EV_P) EV_NOEXCEPT
3601{
3602 int pri;
3603 unsigned int count = 0;
3604
3605 for (pri = NUMPRI; pri--; )
3606 count += pendingcnt [pri];
3607
3608 return count;
3609}
3610
3611ecb_noinline
3612void
1830ev_invoke_pending (EV_P) 3613ev_invoke_pending (EV_P)
1831{ 3614{
1832 int pri; 3615 pendingpri = NUMPRI;
1833 3616
1834 for (pri = NUMPRI; pri--; ) 3617 do
3618 {
3619 --pendingpri;
3620
3621 /* pendingpri possibly gets modified in the inner loop */
1835 while (pendingcnt [pri]) 3622 while (pendingcnt [pendingpri])
1836 { 3623 {
1837 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3624 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
1838 3625
1839 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1840 /* ^ this is no longer true, as pending_w could be here */
1841
1842 p->w->pending = 0; 3626 p->w->pending = 0;
1843 EV_CB_INVOKE (p->w, p->events); 3627 EV_CB_INVOKE (p->w, p->events);
1844 EV_FREQUENT_CHECK; 3628 EV_FREQUENT_CHECK;
1845 } 3629 }
3630 }
3631 while (pendingpri);
1846} 3632}
1847 3633
1848#if EV_IDLE_ENABLE 3634#if EV_IDLE_ENABLE
1849/* make idle watchers pending. this handles the "call-idle */ 3635/* make idle watchers pending. this handles the "call-idle */
1850/* only when higher priorities are idle" logic */ 3636/* only when higher priorities are idle" logic */
1851inline_size void 3637inline_size void
1852idle_reify (EV_P) 3638idle_reify (EV_P)
1853{ 3639{
1854 if (expect_false (idleall)) 3640 if (ecb_expect_false (idleall))
1855 { 3641 {
1856 int pri; 3642 int pri;
1857 3643
1858 for (pri = NUMPRI; pri--; ) 3644 for (pri = NUMPRI; pri--; )
1859 { 3645 {
… …
1889 { 3675 {
1890 ev_at (w) += w->repeat; 3676 ev_at (w) += w->repeat;
1891 if (ev_at (w) < mn_now) 3677 if (ev_at (w) < mn_now)
1892 ev_at (w) = mn_now; 3678 ev_at (w) = mn_now;
1893 3679
1894 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 3680 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > EV_TS_CONST (0.)));
1895 3681
1896 ANHE_at_cache (timers [HEAP0]); 3682 ANHE_at_cache (timers [HEAP0]);
1897 downheap (timers, timercnt, HEAP0); 3683 downheap (timers, timercnt, HEAP0);
1898 } 3684 }
1899 else 3685 else
… …
1902 EV_FREQUENT_CHECK; 3688 EV_FREQUENT_CHECK;
1903 feed_reverse (EV_A_ (W)w); 3689 feed_reverse (EV_A_ (W)w);
1904 } 3690 }
1905 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 3691 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1906 3692
1907 feed_reverse_done (EV_A_ EV_TIMEOUT); 3693 feed_reverse_done (EV_A_ EV_TIMER);
1908 } 3694 }
1909} 3695}
1910 3696
1911#if EV_PERIODIC_ENABLE 3697#if EV_PERIODIC_ENABLE
3698
3699ecb_noinline
3700static void
3701periodic_recalc (EV_P_ ev_periodic *w)
3702{
3703 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3704 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3705
3706 /* the above almost always errs on the low side */
3707 while (at <= ev_rt_now)
3708 {
3709 ev_tstamp nat = at + w->interval;
3710
3711 /* when resolution fails us, we use ev_rt_now */
3712 if (ecb_expect_false (nat == at))
3713 {
3714 at = ev_rt_now;
3715 break;
3716 }
3717
3718 at = nat;
3719 }
3720
3721 ev_at (w) = at;
3722}
3723
1912/* make periodics pending */ 3724/* make periodics pending */
1913inline_size void 3725inline_size void
1914periodics_reify (EV_P) 3726periodics_reify (EV_P)
1915{ 3727{
1916 EV_FREQUENT_CHECK; 3728 EV_FREQUENT_CHECK;
1917 3729
1918 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3730 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1919 { 3731 {
1920 int feed_count = 0;
1921
1922 do 3732 do
1923 { 3733 {
1924 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3734 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
1925 3735
1926 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3736 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
1935 ANHE_at_cache (periodics [HEAP0]); 3745 ANHE_at_cache (periodics [HEAP0]);
1936 downheap (periodics, periodiccnt, HEAP0); 3746 downheap (periodics, periodiccnt, HEAP0);
1937 } 3747 }
1938 else if (w->interval) 3748 else if (w->interval)
1939 { 3749 {
1940 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3750 periodic_recalc (EV_A_ w);
1941 /* if next trigger time is not sufficiently in the future, put it there */
1942 /* this might happen because of floating point inexactness */
1943 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1944 {
1945 ev_at (w) += w->interval;
1946
1947 /* if interval is unreasonably low we might still have a time in the past */
1948 /* so correct this. this will make the periodic very inexact, but the user */
1949 /* has effectively asked to get triggered more often than possible */
1950 if (ev_at (w) < ev_rt_now)
1951 ev_at (w) = ev_rt_now;
1952 }
1953
1954 ANHE_at_cache (periodics [HEAP0]); 3751 ANHE_at_cache (periodics [HEAP0]);
1955 downheap (periodics, periodiccnt, HEAP0); 3752 downheap (periodics, periodiccnt, HEAP0);
1956 } 3753 }
1957 else 3754 else
1958 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3755 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
1965 feed_reverse_done (EV_A_ EV_PERIODIC); 3762 feed_reverse_done (EV_A_ EV_PERIODIC);
1966 } 3763 }
1967} 3764}
1968 3765
1969/* simply recalculate all periodics */ 3766/* simply recalculate all periodics */
1970/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 3767/* TODO: maybe ensure that at least one event happens when jumping forward? */
1971static void noinline 3768ecb_noinline ecb_cold
3769static void
1972periodics_reschedule (EV_P) 3770periodics_reschedule (EV_P)
1973{ 3771{
1974 int i; 3772 int i;
1975 3773
1976 /* adjust periodics after time jump */ 3774 /* adjust periodics after time jump */
… …
1979 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3777 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1980 3778
1981 if (w->reschedule_cb) 3779 if (w->reschedule_cb)
1982 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3780 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1983 else if (w->interval) 3781 else if (w->interval)
1984 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3782 periodic_recalc (EV_A_ w);
1985 3783
1986 ANHE_at_cache (periodics [i]); 3784 ANHE_at_cache (periodics [i]);
1987 } 3785 }
1988 3786
1989 reheap (periodics, periodiccnt); 3787 reheap (periodics, periodiccnt);
1990} 3788}
1991#endif 3789#endif
1992 3790
1993/* adjust all timers by a given offset */ 3791/* adjust all timers by a given offset */
1994static void noinline 3792ecb_noinline ecb_cold
3793static void
1995timers_reschedule (EV_P_ ev_tstamp adjust) 3794timers_reschedule (EV_P_ ev_tstamp adjust)
1996{ 3795{
1997 int i; 3796 int i;
1998 3797
1999 for (i = 0; i < timercnt; ++i) 3798 for (i = 0; i < timercnt; ++i)
… …
2003 ANHE_at_cache (*he); 3802 ANHE_at_cache (*he);
2004 } 3803 }
2005} 3804}
2006 3805
2007/* fetch new monotonic and realtime times from the kernel */ 3806/* fetch new monotonic and realtime times from the kernel */
2008/* also detetc if there was a timejump, and act accordingly */ 3807/* also detect if there was a timejump, and act accordingly */
2009inline_speed void 3808inline_speed void
2010time_update (EV_P_ ev_tstamp max_block) 3809time_update (EV_P_ ev_tstamp max_block)
2011{ 3810{
2012#if EV_USE_MONOTONIC 3811#if EV_USE_MONOTONIC
2013 if (expect_true (have_monotonic)) 3812 if (ecb_expect_true (have_monotonic))
2014 { 3813 {
2015 int i; 3814 int i;
2016 ev_tstamp odiff = rtmn_diff; 3815 ev_tstamp odiff = rtmn_diff;
2017 3816
2018 mn_now = get_clock (); 3817 mn_now = get_clock ();
2019 3818
2020 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3819 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
2021 /* interpolate in the meantime */ 3820 /* interpolate in the meantime */
2022 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 3821 if (ecb_expect_true (mn_now - now_floor < EV_TS_CONST (MIN_TIMEJUMP * .5)))
2023 { 3822 {
2024 ev_rt_now = rtmn_diff + mn_now; 3823 ev_rt_now = rtmn_diff + mn_now;
2025 return; 3824 return;
2026 } 3825 }
2027 3826
… …
2036 * doesn't hurt either as we only do this on time-jumps or 3835 * doesn't hurt either as we only do this on time-jumps or
2037 * in the unlikely event of having been preempted here. 3836 * in the unlikely event of having been preempted here.
2038 */ 3837 */
2039 for (i = 4; --i; ) 3838 for (i = 4; --i; )
2040 { 3839 {
3840 ev_tstamp diff;
2041 rtmn_diff = ev_rt_now - mn_now; 3841 rtmn_diff = ev_rt_now - mn_now;
2042 3842
2043 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3843 diff = odiff - rtmn_diff;
3844
3845 if (ecb_expect_true ((diff < EV_TS_CONST (0.) ? -diff : diff) < EV_TS_CONST (MIN_TIMEJUMP)))
2044 return; /* all is well */ 3846 return; /* all is well */
2045 3847
2046 ev_rt_now = ev_time (); 3848 ev_rt_now = ev_time ();
2047 mn_now = get_clock (); 3849 mn_now = get_clock ();
2048 now_floor = mn_now; 3850 now_floor = mn_now;
… …
2057 else 3859 else
2058#endif 3860#endif
2059 { 3861 {
2060 ev_rt_now = ev_time (); 3862 ev_rt_now = ev_time ();
2061 3863
2062 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 3864 if (ecb_expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + EV_TS_CONST (MIN_TIMEJUMP)))
2063 { 3865 {
2064 /* adjust timers. this is easy, as the offset is the same for all of them */ 3866 /* adjust timers. this is easy, as the offset is the same for all of them */
2065 timers_reschedule (EV_A_ ev_rt_now - mn_now); 3867 timers_reschedule (EV_A_ ev_rt_now - mn_now);
2066#if EV_PERIODIC_ENABLE 3868#if EV_PERIODIC_ENABLE
2067 periodics_reschedule (EV_A); 3869 periodics_reschedule (EV_A);
… …
2070 3872
2071 mn_now = ev_rt_now; 3873 mn_now = ev_rt_now;
2072 } 3874 }
2073} 3875}
2074 3876
2075void 3877int
2076ev_loop (EV_P_ int flags) 3878ev_run (EV_P_ int flags)
2077{ 3879{
2078#if EV_MINIMAL < 2 3880#if EV_FEATURE_API
2079 ++loop_depth; 3881 ++loop_depth;
2080#endif 3882#endif
2081 3883
3884 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
3885
2082 loop_done = EVUNLOOP_CANCEL; 3886 loop_done = EVBREAK_CANCEL;
2083 3887
2084 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 3888 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2085 3889
2086 do 3890 do
2087 { 3891 {
2088#if EV_VERIFY >= 2 3892#if EV_VERIFY >= 2
2089 ev_loop_verify (EV_A); 3893 ev_verify (EV_A);
2090#endif 3894#endif
2091 3895
2092#ifndef _WIN32 3896#ifndef _WIN32
2093 if (expect_false (curpid)) /* penalise the forking check even more */ 3897 if (ecb_expect_false (curpid)) /* penalise the forking check even more */
2094 if (expect_false (getpid () != curpid)) 3898 if (ecb_expect_false (getpid () != curpid))
2095 { 3899 {
2096 curpid = getpid (); 3900 curpid = getpid ();
2097 postfork = 1; 3901 postfork = 1;
2098 } 3902 }
2099#endif 3903#endif
2100 3904
2101#if EV_FORK_ENABLE 3905#if EV_FORK_ENABLE
2102 /* we might have forked, so queue fork handlers */ 3906 /* we might have forked, so queue fork handlers */
2103 if (expect_false (postfork)) 3907 if (ecb_expect_false (postfork))
2104 if (forkcnt) 3908 if (forkcnt)
2105 { 3909 {
2106 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3910 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2107 EV_INVOKE_PENDING; 3911 EV_INVOKE_PENDING;
2108 } 3912 }
2109#endif 3913#endif
2110 3914
3915#if EV_PREPARE_ENABLE
2111 /* queue prepare watchers (and execute them) */ 3916 /* queue prepare watchers (and execute them) */
2112 if (expect_false (preparecnt)) 3917 if (ecb_expect_false (preparecnt))
2113 { 3918 {
2114 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3919 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2115 EV_INVOKE_PENDING; 3920 EV_INVOKE_PENDING;
2116 } 3921 }
3922#endif
3923
3924 if (ecb_expect_false (loop_done))
3925 break;
2117 3926
2118 /* we might have forked, so reify kernel state if necessary */ 3927 /* we might have forked, so reify kernel state if necessary */
2119 if (expect_false (postfork)) 3928 if (ecb_expect_false (postfork))
2120 loop_fork (EV_A); 3929 loop_fork (EV_A);
2121 3930
2122 /* update fd-related kernel structures */ 3931 /* update fd-related kernel structures */
2123 fd_reify (EV_A); 3932 fd_reify (EV_A);
2124 3933
2125 /* calculate blocking time */ 3934 /* calculate blocking time */
2126 { 3935 {
2127 ev_tstamp waittime = 0.; 3936 ev_tstamp waittime = 0.;
2128 ev_tstamp sleeptime = 0.; 3937 ev_tstamp sleeptime = 0.;
2129 3938
3939 /* remember old timestamp for io_blocktime calculation */
3940 ev_tstamp prev_mn_now = mn_now;
3941
3942 /* update time to cancel out callback processing overhead */
3943 time_update (EV_A_ EV_TS_CONST (EV_TSTAMP_HUGE));
3944
3945 /* from now on, we want a pipe-wake-up */
3946 pipe_write_wanted = 1;
3947
3948 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3949
2130 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3950 if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2131 { 3951 {
2132 /* remember old timestamp for io_blocktime calculation */
2133 ev_tstamp prev_mn_now = mn_now;
2134
2135 /* update time to cancel out callback processing overhead */
2136 time_update (EV_A_ 1e100);
2137
2138 waittime = MAX_BLOCKTIME; 3952 waittime = EV_TS_CONST (MAX_BLOCKTIME);
2139 3953
2140 if (timercnt) 3954 if (timercnt)
2141 { 3955 {
2142 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3956 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2143 if (waittime > to) waittime = to; 3957 if (waittime > to) waittime = to;
2144 } 3958 }
2145 3959
2146#if EV_PERIODIC_ENABLE 3960#if EV_PERIODIC_ENABLE
2147 if (periodiccnt) 3961 if (periodiccnt)
2148 { 3962 {
2149 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3963 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2150 if (waittime > to) waittime = to; 3964 if (waittime > to) waittime = to;
2151 } 3965 }
2152#endif 3966#endif
2153 3967
2154 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3968 /* don't let timeouts decrease the waittime below timeout_blocktime */
2155 if (expect_false (waittime < timeout_blocktime)) 3969 if (ecb_expect_false (waittime < timeout_blocktime))
2156 waittime = timeout_blocktime; 3970 waittime = timeout_blocktime;
2157 3971
3972 /* now there are two more special cases left, either we have
3973 * already-expired timers, so we should not sleep, or we have timers
3974 * that expire very soon, in which case we need to wait for a minimum
3975 * amount of time for some event loop backends.
3976 */
3977 if (ecb_expect_false (waittime < backend_mintime))
3978 waittime = waittime <= EV_TS_CONST (0.)
3979 ? EV_TS_CONST (0.)
3980 : backend_mintime;
3981
2158 /* extra check because io_blocktime is commonly 0 */ 3982 /* extra check because io_blocktime is commonly 0 */
2159 if (expect_false (io_blocktime)) 3983 if (ecb_expect_false (io_blocktime))
2160 { 3984 {
2161 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3985 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2162 3986
2163 if (sleeptime > waittime - backend_fudge) 3987 if (sleeptime > waittime - backend_mintime)
2164 sleeptime = waittime - backend_fudge; 3988 sleeptime = waittime - backend_mintime;
2165 3989
2166 if (expect_true (sleeptime > 0.)) 3990 if (ecb_expect_true (sleeptime > EV_TS_CONST (0.)))
2167 { 3991 {
2168 ev_sleep (sleeptime); 3992 ev_sleep (sleeptime);
2169 waittime -= sleeptime; 3993 waittime -= sleeptime;
2170 } 3994 }
2171 } 3995 }
2172 } 3996 }
2173 3997
2174#if EV_MINIMAL < 2 3998#if EV_FEATURE_API
2175 ++loop_count; 3999 ++loop_count;
2176#endif 4000#endif
4001 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2177 backend_poll (EV_A_ waittime); 4002 backend_poll (EV_A_ waittime);
4003 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
4004
4005 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
4006
4007 ECB_MEMORY_FENCE_ACQUIRE;
4008 if (pipe_write_skipped)
4009 {
4010 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
4011 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
4012 }
2178 4013
2179 /* update ev_rt_now, do magic */ 4014 /* update ev_rt_now, do magic */
2180 time_update (EV_A_ waittime + sleeptime); 4015 time_update (EV_A_ waittime + sleeptime);
2181 } 4016 }
2182 4017
… …
2189#if EV_IDLE_ENABLE 4024#if EV_IDLE_ENABLE
2190 /* queue idle watchers unless other events are pending */ 4025 /* queue idle watchers unless other events are pending */
2191 idle_reify (EV_A); 4026 idle_reify (EV_A);
2192#endif 4027#endif
2193 4028
4029#if EV_CHECK_ENABLE
2194 /* queue check watchers, to be executed first */ 4030 /* queue check watchers, to be executed first */
2195 if (expect_false (checkcnt)) 4031 if (ecb_expect_false (checkcnt))
2196 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 4032 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
4033#endif
2197 4034
2198 EV_INVOKE_PENDING; 4035 EV_INVOKE_PENDING;
2199 } 4036 }
2200 while (expect_true ( 4037 while (ecb_expect_true (
2201 activecnt 4038 activecnt
2202 && !loop_done 4039 && !loop_done
2203 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 4040 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2204 )); 4041 ));
2205 4042
2206 if (loop_done == EVUNLOOP_ONE) 4043 if (loop_done == EVBREAK_ONE)
2207 loop_done = EVUNLOOP_CANCEL; 4044 loop_done = EVBREAK_CANCEL;
2208 4045
2209#if EV_MINIMAL < 2 4046#if EV_FEATURE_API
2210 --loop_depth; 4047 --loop_depth;
2211#endif 4048#endif
2212}
2213 4049
4050 return activecnt;
4051}
4052
2214void 4053void
2215ev_unloop (EV_P_ int how) 4054ev_break (EV_P_ int how) EV_NOEXCEPT
2216{ 4055{
2217 loop_done = how; 4056 loop_done = how;
2218} 4057}
2219 4058
2220void 4059void
2221ev_ref (EV_P) 4060ev_ref (EV_P) EV_NOEXCEPT
2222{ 4061{
2223 ++activecnt; 4062 ++activecnt;
2224} 4063}
2225 4064
2226void 4065void
2227ev_unref (EV_P) 4066ev_unref (EV_P) EV_NOEXCEPT
2228{ 4067{
2229 --activecnt; 4068 --activecnt;
2230} 4069}
2231 4070
2232void 4071void
2233ev_now_update (EV_P) 4072ev_now_update (EV_P) EV_NOEXCEPT
2234{ 4073{
2235 time_update (EV_A_ 1e100); 4074 time_update (EV_A_ EV_TSTAMP_HUGE);
2236} 4075}
2237 4076
2238void 4077void
2239ev_suspend (EV_P) 4078ev_suspend (EV_P) EV_NOEXCEPT
2240{ 4079{
2241 ev_now_update (EV_A); 4080 ev_now_update (EV_A);
2242} 4081}
2243 4082
2244void 4083void
2245ev_resume (EV_P) 4084ev_resume (EV_P) EV_NOEXCEPT
2246{ 4085{
2247 ev_tstamp mn_prev = mn_now; 4086 ev_tstamp mn_prev = mn_now;
2248 4087
2249 ev_now_update (EV_A); 4088 ev_now_update (EV_A);
2250 timers_reschedule (EV_A_ mn_now - mn_prev); 4089 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2267inline_size void 4106inline_size void
2268wlist_del (WL *head, WL elem) 4107wlist_del (WL *head, WL elem)
2269{ 4108{
2270 while (*head) 4109 while (*head)
2271 { 4110 {
2272 if (*head == elem) 4111 if (ecb_expect_true (*head == elem))
2273 { 4112 {
2274 *head = elem->next; 4113 *head = elem->next;
2275 return; 4114 break;
2276 } 4115 }
2277 4116
2278 head = &(*head)->next; 4117 head = &(*head)->next;
2279 } 4118 }
2280} 4119}
… …
2289 w->pending = 0; 4128 w->pending = 0;
2290 } 4129 }
2291} 4130}
2292 4131
2293int 4132int
2294ev_clear_pending (EV_P_ void *w) 4133ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
2295{ 4134{
2296 W w_ = (W)w; 4135 W w_ = (W)w;
2297 int pending = w_->pending; 4136 int pending = w_->pending;
2298 4137
2299 if (expect_true (pending)) 4138 if (ecb_expect_true (pending))
2300 { 4139 {
2301 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 4140 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2302 p->w = (W)&pending_w; 4141 p->w = (W)&pending_w;
2303 w_->pending = 0; 4142 w_->pending = 0;
2304 return p->events; 4143 return p->events;
… …
2331 w->active = 0; 4170 w->active = 0;
2332} 4171}
2333 4172
2334/*****************************************************************************/ 4173/*****************************************************************************/
2335 4174
2336void noinline 4175ecb_noinline
4176void
2337ev_io_start (EV_P_ ev_io *w) 4177ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
2338{ 4178{
2339 int fd = w->fd; 4179 int fd = w->fd;
2340 4180
2341 if (expect_false (ev_is_active (w))) 4181 if (ecb_expect_false (ev_is_active (w)))
2342 return; 4182 return;
2343 4183
2344 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 4184 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2345 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 4185 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2346 4186
4187#if EV_VERIFY >= 2
4188 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
4189#endif
2347 EV_FREQUENT_CHECK; 4190 EV_FREQUENT_CHECK;
2348 4191
2349 ev_start (EV_A_ (W)w, 1); 4192 ev_start (EV_A_ (W)w, 1);
2350 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 4193 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
2351 wlist_add (&anfds[fd].head, (WL)w); 4194 wlist_add (&anfds[fd].head, (WL)w);
2352 4195
4196 /* common bug, apparently */
4197 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
4198
2353 fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1); 4199 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2354 w->events &= ~EV__IOFDSET; 4200 w->events &= ~EV__IOFDSET;
2355 4201
2356 EV_FREQUENT_CHECK; 4202 EV_FREQUENT_CHECK;
2357} 4203}
2358 4204
2359void noinline 4205ecb_noinline
4206void
2360ev_io_stop (EV_P_ ev_io *w) 4207ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
2361{ 4208{
2362 clear_pending (EV_A_ (W)w); 4209 clear_pending (EV_A_ (W)w);
2363 if (expect_false (!ev_is_active (w))) 4210 if (ecb_expect_false (!ev_is_active (w)))
2364 return; 4211 return;
2365 4212
2366 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 4213 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2367 4214
4215#if EV_VERIFY >= 2
4216 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
4217#endif
2368 EV_FREQUENT_CHECK; 4218 EV_FREQUENT_CHECK;
2369 4219
2370 wlist_del (&anfds[w->fd].head, (WL)w); 4220 wlist_del (&anfds[w->fd].head, (WL)w);
2371 ev_stop (EV_A_ (W)w); 4221 ev_stop (EV_A_ (W)w);
2372 4222
2373 fd_change (EV_A_ w->fd, 1); 4223 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2374 4224
2375 EV_FREQUENT_CHECK; 4225 EV_FREQUENT_CHECK;
2376} 4226}
2377 4227
2378void noinline 4228ecb_noinline
4229void
2379ev_timer_start (EV_P_ ev_timer *w) 4230ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
2380{ 4231{
2381 if (expect_false (ev_is_active (w))) 4232 if (ecb_expect_false (ev_is_active (w)))
2382 return; 4233 return;
2383 4234
2384 ev_at (w) += mn_now; 4235 ev_at (w) += mn_now;
2385 4236
2386 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 4237 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2387 4238
2388 EV_FREQUENT_CHECK; 4239 EV_FREQUENT_CHECK;
2389 4240
2390 ++timercnt; 4241 ++timercnt;
2391 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 4242 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
2392 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 4243 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
2393 ANHE_w (timers [ev_active (w)]) = (WT)w; 4244 ANHE_w (timers [ev_active (w)]) = (WT)w;
2394 ANHE_at_cache (timers [ev_active (w)]); 4245 ANHE_at_cache (timers [ev_active (w)]);
2395 upheap (timers, ev_active (w)); 4246 upheap (timers, ev_active (w));
2396 4247
2397 EV_FREQUENT_CHECK; 4248 EV_FREQUENT_CHECK;
2398 4249
2399 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 4250 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2400} 4251}
2401 4252
2402void noinline 4253ecb_noinline
4254void
2403ev_timer_stop (EV_P_ ev_timer *w) 4255ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
2404{ 4256{
2405 clear_pending (EV_A_ (W)w); 4257 clear_pending (EV_A_ (W)w);
2406 if (expect_false (!ev_is_active (w))) 4258 if (ecb_expect_false (!ev_is_active (w)))
2407 return; 4259 return;
2408 4260
2409 EV_FREQUENT_CHECK; 4261 EV_FREQUENT_CHECK;
2410 4262
2411 { 4263 {
… …
2413 4265
2414 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 4266 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2415 4267
2416 --timercnt; 4268 --timercnt;
2417 4269
2418 if (expect_true (active < timercnt + HEAP0)) 4270 if (ecb_expect_true (active < timercnt + HEAP0))
2419 { 4271 {
2420 timers [active] = timers [timercnt + HEAP0]; 4272 timers [active] = timers [timercnt + HEAP0];
2421 adjustheap (timers, timercnt, active); 4273 adjustheap (timers, timercnt, active);
2422 } 4274 }
2423 } 4275 }
2424 4276
4277 ev_at (w) -= mn_now;
4278
4279 ev_stop (EV_A_ (W)w);
4280
2425 EV_FREQUENT_CHECK; 4281 EV_FREQUENT_CHECK;
2426
2427 ev_at (w) -= mn_now;
2428
2429 ev_stop (EV_A_ (W)w);
2430} 4282}
2431 4283
2432void noinline 4284ecb_noinline
4285void
2433ev_timer_again (EV_P_ ev_timer *w) 4286ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
2434{ 4287{
2435 EV_FREQUENT_CHECK; 4288 EV_FREQUENT_CHECK;
4289
4290 clear_pending (EV_A_ (W)w);
2436 4291
2437 if (ev_is_active (w)) 4292 if (ev_is_active (w))
2438 { 4293 {
2439 if (w->repeat) 4294 if (w->repeat)
2440 { 4295 {
… …
2452 } 4307 }
2453 4308
2454 EV_FREQUENT_CHECK; 4309 EV_FREQUENT_CHECK;
2455} 4310}
2456 4311
4312ev_tstamp
4313ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
4314{
4315 return ev_at (w) - (ev_is_active (w) ? mn_now : EV_TS_CONST (0.));
4316}
4317
2457#if EV_PERIODIC_ENABLE 4318#if EV_PERIODIC_ENABLE
2458void noinline 4319ecb_noinline
4320void
2459ev_periodic_start (EV_P_ ev_periodic *w) 4321ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
2460{ 4322{
2461 if (expect_false (ev_is_active (w))) 4323 if (ecb_expect_false (ev_is_active (w)))
2462 return; 4324 return;
4325
4326#if EV_USE_TIMERFD
4327 if (timerfd == -2)
4328 evtimerfd_init (EV_A);
4329#endif
2463 4330
2464 if (w->reschedule_cb) 4331 if (w->reschedule_cb)
2465 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4332 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2466 else if (w->interval) 4333 else if (w->interval)
2467 { 4334 {
2468 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 4335 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2469 /* this formula differs from the one in periodic_reify because we do not always round up */ 4336 periodic_recalc (EV_A_ w);
2470 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2471 } 4337 }
2472 else 4338 else
2473 ev_at (w) = w->offset; 4339 ev_at (w) = w->offset;
2474 4340
2475 EV_FREQUENT_CHECK; 4341 EV_FREQUENT_CHECK;
2476 4342
2477 ++periodiccnt; 4343 ++periodiccnt;
2478 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4344 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2479 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4345 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
2480 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4346 ANHE_w (periodics [ev_active (w)]) = (WT)w;
2481 ANHE_at_cache (periodics [ev_active (w)]); 4347 ANHE_at_cache (periodics [ev_active (w)]);
2482 upheap (periodics, ev_active (w)); 4348 upheap (periodics, ev_active (w));
2483 4349
2484 EV_FREQUENT_CHECK; 4350 EV_FREQUENT_CHECK;
2485 4351
2486 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4352 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2487} 4353}
2488 4354
2489void noinline 4355ecb_noinline
4356void
2490ev_periodic_stop (EV_P_ ev_periodic *w) 4357ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
2491{ 4358{
2492 clear_pending (EV_A_ (W)w); 4359 clear_pending (EV_A_ (W)w);
2493 if (expect_false (!ev_is_active (w))) 4360 if (ecb_expect_false (!ev_is_active (w)))
2494 return; 4361 return;
2495 4362
2496 EV_FREQUENT_CHECK; 4363 EV_FREQUENT_CHECK;
2497 4364
2498 { 4365 {
… …
2500 4367
2501 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 4368 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2502 4369
2503 --periodiccnt; 4370 --periodiccnt;
2504 4371
2505 if (expect_true (active < periodiccnt + HEAP0)) 4372 if (ecb_expect_true (active < periodiccnt + HEAP0))
2506 { 4373 {
2507 periodics [active] = periodics [periodiccnt + HEAP0]; 4374 periodics [active] = periodics [periodiccnt + HEAP0];
2508 adjustheap (periodics, periodiccnt, active); 4375 adjustheap (periodics, periodiccnt, active);
2509 } 4376 }
2510 } 4377 }
2511 4378
4379 ev_stop (EV_A_ (W)w);
4380
2512 EV_FREQUENT_CHECK; 4381 EV_FREQUENT_CHECK;
2513
2514 ev_stop (EV_A_ (W)w);
2515} 4382}
2516 4383
2517void noinline 4384ecb_noinline
4385void
2518ev_periodic_again (EV_P_ ev_periodic *w) 4386ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
2519{ 4387{
2520 /* TODO: use adjustheap and recalculation */ 4388 /* TODO: use adjustheap and recalculation */
2521 ev_periodic_stop (EV_A_ w); 4389 ev_periodic_stop (EV_A_ w);
2522 ev_periodic_start (EV_A_ w); 4390 ev_periodic_start (EV_A_ w);
2523} 4391}
… …
2525 4393
2526#ifndef SA_RESTART 4394#ifndef SA_RESTART
2527# define SA_RESTART 0 4395# define SA_RESTART 0
2528#endif 4396#endif
2529 4397
2530void noinline 4398#if EV_SIGNAL_ENABLE
4399
4400ecb_noinline
4401void
2531ev_signal_start (EV_P_ ev_signal *w) 4402ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
2532{ 4403{
4404 if (ecb_expect_false (ev_is_active (w)))
4405 return;
4406
4407 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
4408
2533#if EV_MULTIPLICITY 4409#if EV_MULTIPLICITY
2534 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4410 assert (("libev: a signal must not be attached to two different loops",
2535#endif 4411 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2536 if (expect_false (ev_is_active (w)))
2537 return;
2538 4412
2539 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0)); 4413 signals [w->signum - 1].loop = EV_A;
2540 4414 ECB_MEMORY_FENCE_RELEASE;
2541 evpipe_init (EV_A); 4415#endif
2542 4416
2543 EV_FREQUENT_CHECK; 4417 EV_FREQUENT_CHECK;
2544 4418
4419#if EV_USE_SIGNALFD
4420 if (sigfd == -2)
2545 { 4421 {
2546#ifndef _WIN32 4422 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2547 sigset_t full, prev; 4423 if (sigfd < 0 && errno == EINVAL)
2548 sigfillset (&full); 4424 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2549 sigprocmask (SIG_SETMASK, &full, &prev);
2550#endif
2551 4425
2552 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); 4426 if (sigfd >= 0)
4427 {
4428 fd_intern (sigfd); /* doing it twice will not hurt */
2553 4429
2554#ifndef _WIN32 4430 sigemptyset (&sigfd_set);
2555 sigprocmask (SIG_SETMASK, &prev, 0); 4431
2556#endif 4432 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
4433 ev_set_priority (&sigfd_w, EV_MAXPRI);
4434 ev_io_start (EV_A_ &sigfd_w);
4435 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
4436 }
2557 } 4437 }
4438
4439 if (sigfd >= 0)
4440 {
4441 /* TODO: check .head */
4442 sigaddset (&sigfd_set, w->signum);
4443 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
4444
4445 signalfd (sigfd, &sigfd_set, 0);
4446 }
4447#endif
2558 4448
2559 ev_start (EV_A_ (W)w, 1); 4449 ev_start (EV_A_ (W)w, 1);
2560 wlist_add (&signals [w->signum - 1].head, (WL)w); 4450 wlist_add (&signals [w->signum - 1].head, (WL)w);
2561 4451
2562 if (!((WL)w)->next) 4452 if (!((WL)w)->next)
4453# if EV_USE_SIGNALFD
4454 if (sigfd < 0) /*TODO*/
4455# endif
2563 { 4456 {
2564#if _WIN32 4457# ifdef _WIN32
4458 evpipe_init (EV_A);
4459
2565 signal (w->signum, ev_sighandler); 4460 signal (w->signum, ev_sighandler);
2566#else 4461# else
2567 struct sigaction sa; 4462 struct sigaction sa;
4463
4464 evpipe_init (EV_A);
4465
2568 sa.sa_handler = ev_sighandler; 4466 sa.sa_handler = ev_sighandler;
2569 sigfillset (&sa.sa_mask); 4467 sigfillset (&sa.sa_mask);
2570 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 4468 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2571 sigaction (w->signum, &sa, 0); 4469 sigaction (w->signum, &sa, 0);
4470
4471 if (origflags & EVFLAG_NOSIGMASK)
4472 {
4473 sigemptyset (&sa.sa_mask);
4474 sigaddset (&sa.sa_mask, w->signum);
4475 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
4476 }
2572#endif 4477#endif
2573 } 4478 }
2574 4479
2575 EV_FREQUENT_CHECK; 4480 EV_FREQUENT_CHECK;
2576} 4481}
2577 4482
2578void noinline 4483ecb_noinline
4484void
2579ev_signal_stop (EV_P_ ev_signal *w) 4485ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
2580{ 4486{
2581 clear_pending (EV_A_ (W)w); 4487 clear_pending (EV_A_ (W)w);
2582 if (expect_false (!ev_is_active (w))) 4488 if (ecb_expect_false (!ev_is_active (w)))
2583 return; 4489 return;
2584 4490
2585 EV_FREQUENT_CHECK; 4491 EV_FREQUENT_CHECK;
2586 4492
2587 wlist_del (&signals [w->signum - 1].head, (WL)w); 4493 wlist_del (&signals [w->signum - 1].head, (WL)w);
2588 ev_stop (EV_A_ (W)w); 4494 ev_stop (EV_A_ (W)w);
2589 4495
2590 if (!signals [w->signum - 1].head) 4496 if (!signals [w->signum - 1].head)
4497 {
4498#if EV_MULTIPLICITY
4499 signals [w->signum - 1].loop = 0; /* unattach from signal */
4500#endif
4501#if EV_USE_SIGNALFD
4502 if (sigfd >= 0)
4503 {
4504 sigset_t ss;
4505
4506 sigemptyset (&ss);
4507 sigaddset (&ss, w->signum);
4508 sigdelset (&sigfd_set, w->signum);
4509
4510 signalfd (sigfd, &sigfd_set, 0);
4511 sigprocmask (SIG_UNBLOCK, &ss, 0);
4512 }
4513 else
4514#endif
2591 signal (w->signum, SIG_DFL); 4515 signal (w->signum, SIG_DFL);
4516 }
2592 4517
2593 EV_FREQUENT_CHECK; 4518 EV_FREQUENT_CHECK;
2594} 4519}
2595 4520
4521#endif
4522
4523#if EV_CHILD_ENABLE
4524
2596void 4525void
2597ev_child_start (EV_P_ ev_child *w) 4526ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
2598{ 4527{
2599#if EV_MULTIPLICITY 4528#if EV_MULTIPLICITY
2600 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4529 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2601#endif 4530#endif
2602 if (expect_false (ev_is_active (w))) 4531 if (ecb_expect_false (ev_is_active (w)))
2603 return; 4532 return;
2604 4533
2605 EV_FREQUENT_CHECK; 4534 EV_FREQUENT_CHECK;
2606 4535
2607 ev_start (EV_A_ (W)w, 1); 4536 ev_start (EV_A_ (W)w, 1);
2608 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4537 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2609 4538
2610 EV_FREQUENT_CHECK; 4539 EV_FREQUENT_CHECK;
2611} 4540}
2612 4541
2613void 4542void
2614ev_child_stop (EV_P_ ev_child *w) 4543ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
2615{ 4544{
2616 clear_pending (EV_A_ (W)w); 4545 clear_pending (EV_A_ (W)w);
2617 if (expect_false (!ev_is_active (w))) 4546 if (ecb_expect_false (!ev_is_active (w)))
2618 return; 4547 return;
2619 4548
2620 EV_FREQUENT_CHECK; 4549 EV_FREQUENT_CHECK;
2621 4550
2622 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4551 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2623 ev_stop (EV_A_ (W)w); 4552 ev_stop (EV_A_ (W)w);
2624 4553
2625 EV_FREQUENT_CHECK; 4554 EV_FREQUENT_CHECK;
2626} 4555}
4556
4557#endif
2627 4558
2628#if EV_STAT_ENABLE 4559#if EV_STAT_ENABLE
2629 4560
2630# ifdef _WIN32 4561# ifdef _WIN32
2631# undef lstat 4562# undef lstat
… …
2634 4565
2635#define DEF_STAT_INTERVAL 5.0074891 4566#define DEF_STAT_INTERVAL 5.0074891
2636#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4567#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2637#define MIN_STAT_INTERVAL 0.1074891 4568#define MIN_STAT_INTERVAL 0.1074891
2638 4569
2639static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4570ecb_noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2640 4571
2641#if EV_USE_INOTIFY 4572#if EV_USE_INOTIFY
2642# define EV_INOTIFY_BUFSIZE 8192
2643 4573
2644static void noinline 4574/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
4575# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
4576
4577ecb_noinline
4578static void
2645infy_add (EV_P_ ev_stat *w) 4579infy_add (EV_P_ ev_stat *w)
2646{ 4580{
2647 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); 4581 w->wd = inotify_add_watch (fs_fd, w->path,
4582 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4583 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4584 | IN_DONT_FOLLOW | IN_MASK_ADD);
2648 4585
2649 if (w->wd < 0) 4586 if (w->wd >= 0)
4587 {
4588 struct statfs sfs;
4589
4590 /* now local changes will be tracked by inotify, but remote changes won't */
4591 /* unless the filesystem is known to be local, we therefore still poll */
4592 /* also do poll on <2.6.25, but with normal frequency */
4593
4594 if (!fs_2625)
4595 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
4596 else if (!statfs (w->path, &sfs)
4597 && (sfs.f_type == 0x1373 /* devfs */
4598 || sfs.f_type == 0x4006 /* fat */
4599 || sfs.f_type == 0x4d44 /* msdos */
4600 || sfs.f_type == 0xEF53 /* ext2/3 */
4601 || sfs.f_type == 0x72b6 /* jffs2 */
4602 || sfs.f_type == 0x858458f6 /* ramfs */
4603 || sfs.f_type == 0x5346544e /* ntfs */
4604 || sfs.f_type == 0x3153464a /* jfs */
4605 || sfs.f_type == 0x9123683e /* btrfs */
4606 || sfs.f_type == 0x52654973 /* reiser3 */
4607 || sfs.f_type == 0x01021994 /* tmpfs */
4608 || sfs.f_type == 0x58465342 /* xfs */))
4609 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
4610 else
4611 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2650 { 4612 }
4613 else
4614 {
4615 /* can't use inotify, continue to stat */
2651 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4616 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2652 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2653 4617
2654 /* monitor some parent directory for speedup hints */ 4618 /* if path is not there, monitor some parent directory for speedup hints */
2655 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 4619 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2656 /* but an efficiency issue only */ 4620 /* but an efficiency issue only */
2657 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 4621 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2658 { 4622 {
2659 char path [4096]; 4623 char path [4096];
… …
2669 if (!pend || pend == path) 4633 if (!pend || pend == path)
2670 break; 4634 break;
2671 4635
2672 *pend = 0; 4636 *pend = 0;
2673 w->wd = inotify_add_watch (fs_fd, path, mask); 4637 w->wd = inotify_add_watch (fs_fd, path, mask);
2674 } 4638 }
2675 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 4639 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2676 } 4640 }
2677 } 4641 }
2678 4642
2679 if (w->wd >= 0) 4643 if (w->wd >= 0)
2680 {
2681 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4644 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2682 4645
2683 /* now local changes will be tracked by inotify, but remote changes won't */ 4646 /* now re-arm timer, if required */
2684 /* unless the filesystem it known to be local, we therefore still poll */ 4647 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2685 /* also do poll on <2.6.25, but with normal frequency */
2686 struct statfs sfs;
2687
2688 if (fs_2625 && !statfs (w->path, &sfs))
2689 if (sfs.f_type == 0x1373 /* devfs */
2690 || sfs.f_type == 0xEF53 /* ext2/3 */
2691 || sfs.f_type == 0x3153464a /* jfs */
2692 || sfs.f_type == 0x52654973 /* reiser3 */
2693 || sfs.f_type == 0x01021994 /* tempfs */
2694 || sfs.f_type == 0x58465342 /* xfs */)
2695 return;
2696
2697 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2698 ev_timer_again (EV_A_ &w->timer); 4648 ev_timer_again (EV_A_ &w->timer);
2699 } 4649 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2700} 4650}
2701 4651
2702static void noinline 4652ecb_noinline
4653static void
2703infy_del (EV_P_ ev_stat *w) 4654infy_del (EV_P_ ev_stat *w)
2704{ 4655{
2705 int slot; 4656 int slot;
2706 int wd = w->wd; 4657 int wd = w->wd;
2707 4658
2708 if (wd < 0) 4659 if (wd < 0)
2709 return; 4660 return;
2710 4661
2711 w->wd = -2; 4662 w->wd = -2;
2712 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 4663 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2713 wlist_del (&fs_hash [slot].head, (WL)w); 4664 wlist_del (&fs_hash [slot].head, (WL)w);
2714 4665
2715 /* remove this watcher, if others are watching it, they will rearm */ 4666 /* remove this watcher, if others are watching it, they will rearm */
2716 inotify_rm_watch (fs_fd, wd); 4667 inotify_rm_watch (fs_fd, wd);
2717} 4668}
2718 4669
2719static void noinline 4670ecb_noinline
4671static void
2720infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4672infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2721{ 4673{
2722 if (slot < 0) 4674 if (slot < 0)
2723 /* overflow, need to check for all hash slots */ 4675 /* overflow, need to check for all hash slots */
2724 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4676 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2725 infy_wd (EV_A_ slot, wd, ev); 4677 infy_wd (EV_A_ slot, wd, ev);
2726 else 4678 else
2727 { 4679 {
2728 WL w_; 4680 WL w_;
2729 4681
2730 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 4682 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2731 { 4683 {
2732 ev_stat *w = (ev_stat *)w_; 4684 ev_stat *w = (ev_stat *)w_;
2733 w_ = w_->next; /* lets us remove this watcher and all before it */ 4685 w_ = w_->next; /* lets us remove this watcher and all before it */
2734 4686
2735 if (w->wd == wd || wd == -1) 4687 if (w->wd == wd || wd == -1)
2736 { 4688 {
2737 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 4689 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2738 { 4690 {
2739 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4691 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2740 w->wd = -1; 4692 w->wd = -1;
2741 infy_add (EV_A_ w); /* re-add, no matter what */ 4693 infy_add (EV_A_ w); /* re-add, no matter what */
2742 } 4694 }
2743 4695
2744 stat_timer_cb (EV_A_ &w->timer, 0); 4696 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2749 4701
2750static void 4702static void
2751infy_cb (EV_P_ ev_io *w, int revents) 4703infy_cb (EV_P_ ev_io *w, int revents)
2752{ 4704{
2753 char buf [EV_INOTIFY_BUFSIZE]; 4705 char buf [EV_INOTIFY_BUFSIZE];
2754 struct inotify_event *ev = (struct inotify_event *)buf;
2755 int ofs; 4706 int ofs;
2756 int len = read (fs_fd, buf, sizeof (buf)); 4707 int len = read (fs_fd, buf, sizeof (buf));
2757 4708
2758 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 4709 for (ofs = 0; ofs < len; )
4710 {
4711 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2759 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4712 infy_wd (EV_A_ ev->wd, ev->wd, ev);
4713 ofs += sizeof (struct inotify_event) + ev->len;
4714 }
2760} 4715}
2761 4716
2762inline_size void 4717inline_size ecb_cold
4718void
2763check_2625 (EV_P) 4719ev_check_2625 (EV_P)
2764{ 4720{
2765 /* kernels < 2.6.25 are borked 4721 /* kernels < 2.6.25 are borked
2766 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4722 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2767 */ 4723 */
2768 struct utsname buf; 4724 if (ev_linux_version () < 0x020619)
2769 int major, minor, micro;
2770
2771 if (uname (&buf))
2772 return; 4725 return;
2773 4726
2774 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2775 return;
2776
2777 if (major < 2
2778 || (major == 2 && minor < 6)
2779 || (major == 2 && minor == 6 && micro < 25))
2780 return;
2781
2782 fs_2625 = 1; 4727 fs_2625 = 1;
4728}
4729
4730inline_size int
4731infy_newfd (void)
4732{
4733#if defined IN_CLOEXEC && defined IN_NONBLOCK
4734 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
4735 if (fd >= 0)
4736 return fd;
4737#endif
4738 return inotify_init ();
2783} 4739}
2784 4740
2785inline_size void 4741inline_size void
2786infy_init (EV_P) 4742infy_init (EV_P)
2787{ 4743{
2788 if (fs_fd != -2) 4744 if (fs_fd != -2)
2789 return; 4745 return;
2790 4746
2791 fs_fd = -1; 4747 fs_fd = -1;
2792 4748
2793 check_2625 (EV_A); 4749 ev_check_2625 (EV_A);
2794 4750
2795 fs_fd = inotify_init (); 4751 fs_fd = infy_newfd ();
2796 4752
2797 if (fs_fd >= 0) 4753 if (fs_fd >= 0)
2798 { 4754 {
4755 fd_intern (fs_fd);
2799 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 4756 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2800 ev_set_priority (&fs_w, EV_MAXPRI); 4757 ev_set_priority (&fs_w, EV_MAXPRI);
2801 ev_io_start (EV_A_ &fs_w); 4758 ev_io_start (EV_A_ &fs_w);
4759 ev_unref (EV_A);
2802 } 4760 }
2803} 4761}
2804 4762
2805inline_size void 4763inline_size void
2806infy_fork (EV_P) 4764infy_fork (EV_P)
… …
2808 int slot; 4766 int slot;
2809 4767
2810 if (fs_fd < 0) 4768 if (fs_fd < 0)
2811 return; 4769 return;
2812 4770
4771 ev_ref (EV_A);
4772 ev_io_stop (EV_A_ &fs_w);
2813 close (fs_fd); 4773 close (fs_fd);
2814 fs_fd = inotify_init (); 4774 fs_fd = infy_newfd ();
2815 4775
4776 if (fs_fd >= 0)
4777 {
4778 fd_intern (fs_fd);
4779 ev_io_set (&fs_w, fs_fd, EV_READ);
4780 ev_io_start (EV_A_ &fs_w);
4781 ev_unref (EV_A);
4782 }
4783
2816 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4784 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2817 { 4785 {
2818 WL w_ = fs_hash [slot].head; 4786 WL w_ = fs_hash [slot].head;
2819 fs_hash [slot].head = 0; 4787 fs_hash [slot].head = 0;
2820 4788
2821 while (w_) 4789 while (w_)
… …
2826 w->wd = -1; 4794 w->wd = -1;
2827 4795
2828 if (fs_fd >= 0) 4796 if (fs_fd >= 0)
2829 infy_add (EV_A_ w); /* re-add, no matter what */ 4797 infy_add (EV_A_ w); /* re-add, no matter what */
2830 else 4798 else
4799 {
4800 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
4801 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2831 ev_timer_again (EV_A_ &w->timer); 4802 ev_timer_again (EV_A_ &w->timer);
4803 if (ev_is_active (&w->timer)) ev_unref (EV_A);
4804 }
2832 } 4805 }
2833 } 4806 }
2834} 4807}
2835 4808
2836#endif 4809#endif
… …
2840#else 4813#else
2841# define EV_LSTAT(p,b) lstat (p, b) 4814# define EV_LSTAT(p,b) lstat (p, b)
2842#endif 4815#endif
2843 4816
2844void 4817void
2845ev_stat_stat (EV_P_ ev_stat *w) 4818ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
2846{ 4819{
2847 if (lstat (w->path, &w->attr) < 0) 4820 if (lstat (w->path, &w->attr) < 0)
2848 w->attr.st_nlink = 0; 4821 w->attr.st_nlink = 0;
2849 else if (!w->attr.st_nlink) 4822 else if (!w->attr.st_nlink)
2850 w->attr.st_nlink = 1; 4823 w->attr.st_nlink = 1;
2851} 4824}
2852 4825
2853static void noinline 4826ecb_noinline
4827static void
2854stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4828stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2855{ 4829{
2856 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4830 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2857 4831
2858 /* we copy this here each the time so that */ 4832 ev_statdata prev = w->attr;
2859 /* prev has the old value when the callback gets invoked */
2860 w->prev = w->attr;
2861 ev_stat_stat (EV_A_ w); 4833 ev_stat_stat (EV_A_ w);
2862 4834
2863 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 4835 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2864 if ( 4836 if (
2865 w->prev.st_dev != w->attr.st_dev 4837 prev.st_dev != w->attr.st_dev
2866 || w->prev.st_ino != w->attr.st_ino 4838 || prev.st_ino != w->attr.st_ino
2867 || w->prev.st_mode != w->attr.st_mode 4839 || prev.st_mode != w->attr.st_mode
2868 || w->prev.st_nlink != w->attr.st_nlink 4840 || prev.st_nlink != w->attr.st_nlink
2869 || w->prev.st_uid != w->attr.st_uid 4841 || prev.st_uid != w->attr.st_uid
2870 || w->prev.st_gid != w->attr.st_gid 4842 || prev.st_gid != w->attr.st_gid
2871 || w->prev.st_rdev != w->attr.st_rdev 4843 || prev.st_rdev != w->attr.st_rdev
2872 || w->prev.st_size != w->attr.st_size 4844 || prev.st_size != w->attr.st_size
2873 || w->prev.st_atime != w->attr.st_atime 4845 || prev.st_atime != w->attr.st_atime
2874 || w->prev.st_mtime != w->attr.st_mtime 4846 || prev.st_mtime != w->attr.st_mtime
2875 || w->prev.st_ctime != w->attr.st_ctime 4847 || prev.st_ctime != w->attr.st_ctime
2876 ) { 4848 ) {
4849 /* we only update w->prev on actual differences */
4850 /* in case we test more often than invoke the callback, */
4851 /* to ensure that prev is always different to attr */
4852 w->prev = prev;
4853
2877 #if EV_USE_INOTIFY 4854 #if EV_USE_INOTIFY
2878 if (fs_fd >= 0) 4855 if (fs_fd >= 0)
2879 { 4856 {
2880 infy_del (EV_A_ w); 4857 infy_del (EV_A_ w);
2881 infy_add (EV_A_ w); 4858 infy_add (EV_A_ w);
… …
2886 ev_feed_event (EV_A_ w, EV_STAT); 4863 ev_feed_event (EV_A_ w, EV_STAT);
2887 } 4864 }
2888} 4865}
2889 4866
2890void 4867void
2891ev_stat_start (EV_P_ ev_stat *w) 4868ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
2892{ 4869{
2893 if (expect_false (ev_is_active (w))) 4870 if (ecb_expect_false (ev_is_active (w)))
2894 return; 4871 return;
2895 4872
2896 ev_stat_stat (EV_A_ w); 4873 ev_stat_stat (EV_A_ w);
2897 4874
2898 if (w->interval < MIN_STAT_INTERVAL && w->interval) 4875 if (w->interval < MIN_STAT_INTERVAL && w->interval)
… …
2906 4883
2907 if (fs_fd >= 0) 4884 if (fs_fd >= 0)
2908 infy_add (EV_A_ w); 4885 infy_add (EV_A_ w);
2909 else 4886 else
2910#endif 4887#endif
4888 {
2911 ev_timer_again (EV_A_ &w->timer); 4889 ev_timer_again (EV_A_ &w->timer);
4890 ev_unref (EV_A);
4891 }
2912 4892
2913 ev_start (EV_A_ (W)w, 1); 4893 ev_start (EV_A_ (W)w, 1);
2914 4894
2915 EV_FREQUENT_CHECK; 4895 EV_FREQUENT_CHECK;
2916} 4896}
2917 4897
2918void 4898void
2919ev_stat_stop (EV_P_ ev_stat *w) 4899ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
2920{ 4900{
2921 clear_pending (EV_A_ (W)w); 4901 clear_pending (EV_A_ (W)w);
2922 if (expect_false (!ev_is_active (w))) 4902 if (ecb_expect_false (!ev_is_active (w)))
2923 return; 4903 return;
2924 4904
2925 EV_FREQUENT_CHECK; 4905 EV_FREQUENT_CHECK;
2926 4906
2927#if EV_USE_INOTIFY 4907#if EV_USE_INOTIFY
2928 infy_del (EV_A_ w); 4908 infy_del (EV_A_ w);
2929#endif 4909#endif
4910
4911 if (ev_is_active (&w->timer))
4912 {
4913 ev_ref (EV_A);
2930 ev_timer_stop (EV_A_ &w->timer); 4914 ev_timer_stop (EV_A_ &w->timer);
4915 }
2931 4916
2932 ev_stop (EV_A_ (W)w); 4917 ev_stop (EV_A_ (W)w);
2933 4918
2934 EV_FREQUENT_CHECK; 4919 EV_FREQUENT_CHECK;
2935} 4920}
2936#endif 4921#endif
2937 4922
2938#if EV_IDLE_ENABLE 4923#if EV_IDLE_ENABLE
2939void 4924void
2940ev_idle_start (EV_P_ ev_idle *w) 4925ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
2941{ 4926{
2942 if (expect_false (ev_is_active (w))) 4927 if (ecb_expect_false (ev_is_active (w)))
2943 return; 4928 return;
2944 4929
2945 pri_adjust (EV_A_ (W)w); 4930 pri_adjust (EV_A_ (W)w);
2946 4931
2947 EV_FREQUENT_CHECK; 4932 EV_FREQUENT_CHECK;
… …
2950 int active = ++idlecnt [ABSPRI (w)]; 4935 int active = ++idlecnt [ABSPRI (w)];
2951 4936
2952 ++idleall; 4937 ++idleall;
2953 ev_start (EV_A_ (W)w, active); 4938 ev_start (EV_A_ (W)w, active);
2954 4939
2955 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 4940 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
2956 idles [ABSPRI (w)][active - 1] = w; 4941 idles [ABSPRI (w)][active - 1] = w;
2957 } 4942 }
2958 4943
2959 EV_FREQUENT_CHECK; 4944 EV_FREQUENT_CHECK;
2960} 4945}
2961 4946
2962void 4947void
2963ev_idle_stop (EV_P_ ev_idle *w) 4948ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
2964{ 4949{
2965 clear_pending (EV_A_ (W)w); 4950 clear_pending (EV_A_ (W)w);
2966 if (expect_false (!ev_is_active (w))) 4951 if (ecb_expect_false (!ev_is_active (w)))
2967 return; 4952 return;
2968 4953
2969 EV_FREQUENT_CHECK; 4954 EV_FREQUENT_CHECK;
2970 4955
2971 { 4956 {
… …
2980 4965
2981 EV_FREQUENT_CHECK; 4966 EV_FREQUENT_CHECK;
2982} 4967}
2983#endif 4968#endif
2984 4969
4970#if EV_PREPARE_ENABLE
2985void 4971void
2986ev_prepare_start (EV_P_ ev_prepare *w) 4972ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
2987{ 4973{
2988 if (expect_false (ev_is_active (w))) 4974 if (ecb_expect_false (ev_is_active (w)))
2989 return; 4975 return;
2990 4976
2991 EV_FREQUENT_CHECK; 4977 EV_FREQUENT_CHECK;
2992 4978
2993 ev_start (EV_A_ (W)w, ++preparecnt); 4979 ev_start (EV_A_ (W)w, ++preparecnt);
2994 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4980 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
2995 prepares [preparecnt - 1] = w; 4981 prepares [preparecnt - 1] = w;
2996 4982
2997 EV_FREQUENT_CHECK; 4983 EV_FREQUENT_CHECK;
2998} 4984}
2999 4985
3000void 4986void
3001ev_prepare_stop (EV_P_ ev_prepare *w) 4987ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
3002{ 4988{
3003 clear_pending (EV_A_ (W)w); 4989 clear_pending (EV_A_ (W)w);
3004 if (expect_false (!ev_is_active (w))) 4990 if (ecb_expect_false (!ev_is_active (w)))
3005 return; 4991 return;
3006 4992
3007 EV_FREQUENT_CHECK; 4993 EV_FREQUENT_CHECK;
3008 4994
3009 { 4995 {
… …
3015 5001
3016 ev_stop (EV_A_ (W)w); 5002 ev_stop (EV_A_ (W)w);
3017 5003
3018 EV_FREQUENT_CHECK; 5004 EV_FREQUENT_CHECK;
3019} 5005}
5006#endif
3020 5007
5008#if EV_CHECK_ENABLE
3021void 5009void
3022ev_check_start (EV_P_ ev_check *w) 5010ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
3023{ 5011{
3024 if (expect_false (ev_is_active (w))) 5012 if (ecb_expect_false (ev_is_active (w)))
3025 return; 5013 return;
3026 5014
3027 EV_FREQUENT_CHECK; 5015 EV_FREQUENT_CHECK;
3028 5016
3029 ev_start (EV_A_ (W)w, ++checkcnt); 5017 ev_start (EV_A_ (W)w, ++checkcnt);
3030 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 5018 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
3031 checks [checkcnt - 1] = w; 5019 checks [checkcnt - 1] = w;
3032 5020
3033 EV_FREQUENT_CHECK; 5021 EV_FREQUENT_CHECK;
3034} 5022}
3035 5023
3036void 5024void
3037ev_check_stop (EV_P_ ev_check *w) 5025ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
3038{ 5026{
3039 clear_pending (EV_A_ (W)w); 5027 clear_pending (EV_A_ (W)w);
3040 if (expect_false (!ev_is_active (w))) 5028 if (ecb_expect_false (!ev_is_active (w)))
3041 return; 5029 return;
3042 5030
3043 EV_FREQUENT_CHECK; 5031 EV_FREQUENT_CHECK;
3044 5032
3045 { 5033 {
… …
3051 5039
3052 ev_stop (EV_A_ (W)w); 5040 ev_stop (EV_A_ (W)w);
3053 5041
3054 EV_FREQUENT_CHECK; 5042 EV_FREQUENT_CHECK;
3055} 5043}
5044#endif
3056 5045
3057#if EV_EMBED_ENABLE 5046#if EV_EMBED_ENABLE
3058void noinline 5047ecb_noinline
5048void
3059ev_embed_sweep (EV_P_ ev_embed *w) 5049ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
3060{ 5050{
3061 ev_loop (w->other, EVLOOP_NONBLOCK); 5051 ev_run (w->other, EVRUN_NOWAIT);
3062} 5052}
3063 5053
3064static void 5054static void
3065embed_io_cb (EV_P_ ev_io *io, int revents) 5055embed_io_cb (EV_P_ ev_io *io, int revents)
3066{ 5056{
3067 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 5057 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3068 5058
3069 if (ev_cb (w)) 5059 if (ev_cb (w))
3070 ev_feed_event (EV_A_ (W)w, EV_EMBED); 5060 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3071 else 5061 else
3072 ev_loop (w->other, EVLOOP_NONBLOCK); 5062 ev_run (w->other, EVRUN_NOWAIT);
3073} 5063}
3074 5064
3075static void 5065static void
3076embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 5066embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3077{ 5067{
3078 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 5068 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
3079 5069
3080 { 5070 {
3081 struct ev_loop *loop = w->other; 5071 EV_P = w->other;
3082 5072
3083 while (fdchangecnt) 5073 while (fdchangecnt)
3084 { 5074 {
3085 fd_reify (EV_A); 5075 fd_reify (EV_A);
3086 ev_loop (EV_A_ EVLOOP_NONBLOCK); 5076 ev_run (EV_A_ EVRUN_NOWAIT);
3087 } 5077 }
3088 } 5078 }
3089} 5079}
3090 5080
5081#if EV_FORK_ENABLE
3091static void 5082static void
3092embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) 5083embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
3093{ 5084{
3094 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 5085 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3095 5086
3096 ev_embed_stop (EV_A_ w); 5087 ev_embed_stop (EV_A_ w);
3097 5088
3098 { 5089 {
3099 struct ev_loop *loop = w->other; 5090 EV_P = w->other;
3100 5091
3101 ev_loop_fork (EV_A); 5092 ev_loop_fork (EV_A);
3102 ev_loop (EV_A_ EVLOOP_NONBLOCK); 5093 ev_run (EV_A_ EVRUN_NOWAIT);
3103 } 5094 }
3104 5095
3105 ev_embed_start (EV_A_ w); 5096 ev_embed_start (EV_A_ w);
3106} 5097}
5098#endif
3107 5099
3108#if 0 5100#if 0
3109static void 5101static void
3110embed_idle_cb (EV_P_ ev_idle *idle, int revents) 5102embed_idle_cb (EV_P_ ev_idle *idle, int revents)
3111{ 5103{
3112 ev_idle_stop (EV_A_ idle); 5104 ev_idle_stop (EV_A_ idle);
3113} 5105}
3114#endif 5106#endif
3115 5107
3116void 5108void
3117ev_embed_start (EV_P_ ev_embed *w) 5109ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
3118{ 5110{
3119 if (expect_false (ev_is_active (w))) 5111 if (ecb_expect_false (ev_is_active (w)))
3120 return; 5112 return;
3121 5113
3122 { 5114 {
3123 struct ev_loop *loop = w->other; 5115 EV_P = w->other;
3124 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 5116 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
3125 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 5117 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3126 } 5118 }
3127 5119
3128 EV_FREQUENT_CHECK; 5120 EV_FREQUENT_CHECK;
… …
3132 5124
3133 ev_prepare_init (&w->prepare, embed_prepare_cb); 5125 ev_prepare_init (&w->prepare, embed_prepare_cb);
3134 ev_set_priority (&w->prepare, EV_MINPRI); 5126 ev_set_priority (&w->prepare, EV_MINPRI);
3135 ev_prepare_start (EV_A_ &w->prepare); 5127 ev_prepare_start (EV_A_ &w->prepare);
3136 5128
5129#if EV_FORK_ENABLE
3137 ev_fork_init (&w->fork, embed_fork_cb); 5130 ev_fork_init (&w->fork, embed_fork_cb);
3138 ev_fork_start (EV_A_ &w->fork); 5131 ev_fork_start (EV_A_ &w->fork);
5132#endif
3139 5133
3140 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 5134 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
3141 5135
3142 ev_start (EV_A_ (W)w, 1); 5136 ev_start (EV_A_ (W)w, 1);
3143 5137
3144 EV_FREQUENT_CHECK; 5138 EV_FREQUENT_CHECK;
3145} 5139}
3146 5140
3147void 5141void
3148ev_embed_stop (EV_P_ ev_embed *w) 5142ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
3149{ 5143{
3150 clear_pending (EV_A_ (W)w); 5144 clear_pending (EV_A_ (W)w);
3151 if (expect_false (!ev_is_active (w))) 5145 if (ecb_expect_false (!ev_is_active (w)))
3152 return; 5146 return;
3153 5147
3154 EV_FREQUENT_CHECK; 5148 EV_FREQUENT_CHECK;
3155 5149
3156 ev_io_stop (EV_A_ &w->io); 5150 ev_io_stop (EV_A_ &w->io);
3157 ev_prepare_stop (EV_A_ &w->prepare); 5151 ev_prepare_stop (EV_A_ &w->prepare);
5152#if EV_FORK_ENABLE
3158 ev_fork_stop (EV_A_ &w->fork); 5153 ev_fork_stop (EV_A_ &w->fork);
5154#endif
5155
5156 ev_stop (EV_A_ (W)w);
3159 5157
3160 EV_FREQUENT_CHECK; 5158 EV_FREQUENT_CHECK;
3161} 5159}
3162#endif 5160#endif
3163 5161
3164#if EV_FORK_ENABLE 5162#if EV_FORK_ENABLE
3165void 5163void
3166ev_fork_start (EV_P_ ev_fork *w) 5164ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
3167{ 5165{
3168 if (expect_false (ev_is_active (w))) 5166 if (ecb_expect_false (ev_is_active (w)))
3169 return; 5167 return;
3170 5168
3171 EV_FREQUENT_CHECK; 5169 EV_FREQUENT_CHECK;
3172 5170
3173 ev_start (EV_A_ (W)w, ++forkcnt); 5171 ev_start (EV_A_ (W)w, ++forkcnt);
3174 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 5172 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
3175 forks [forkcnt - 1] = w; 5173 forks [forkcnt - 1] = w;
3176 5174
3177 EV_FREQUENT_CHECK; 5175 EV_FREQUENT_CHECK;
3178} 5176}
3179 5177
3180void 5178void
3181ev_fork_stop (EV_P_ ev_fork *w) 5179ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
3182{ 5180{
3183 clear_pending (EV_A_ (W)w); 5181 clear_pending (EV_A_ (W)w);
3184 if (expect_false (!ev_is_active (w))) 5182 if (ecb_expect_false (!ev_is_active (w)))
3185 return; 5183 return;
3186 5184
3187 EV_FREQUENT_CHECK; 5185 EV_FREQUENT_CHECK;
3188 5186
3189 { 5187 {
… …
3197 5195
3198 EV_FREQUENT_CHECK; 5196 EV_FREQUENT_CHECK;
3199} 5197}
3200#endif 5198#endif
3201 5199
5200#if EV_CLEANUP_ENABLE
5201void
5202ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
5203{
5204 if (ecb_expect_false (ev_is_active (w)))
5205 return;
5206
5207 EV_FREQUENT_CHECK;
5208
5209 ev_start (EV_A_ (W)w, ++cleanupcnt);
5210 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
5211 cleanups [cleanupcnt - 1] = w;
5212
5213 /* cleanup watchers should never keep a refcount on the loop */
5214 ev_unref (EV_A);
5215 EV_FREQUENT_CHECK;
5216}
5217
5218void
5219ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
5220{
5221 clear_pending (EV_A_ (W)w);
5222 if (ecb_expect_false (!ev_is_active (w)))
5223 return;
5224
5225 EV_FREQUENT_CHECK;
5226 ev_ref (EV_A);
5227
5228 {
5229 int active = ev_active (w);
5230
5231 cleanups [active - 1] = cleanups [--cleanupcnt];
5232 ev_active (cleanups [active - 1]) = active;
5233 }
5234
5235 ev_stop (EV_A_ (W)w);
5236
5237 EV_FREQUENT_CHECK;
5238}
5239#endif
5240
3202#if EV_ASYNC_ENABLE 5241#if EV_ASYNC_ENABLE
3203void 5242void
3204ev_async_start (EV_P_ ev_async *w) 5243ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
3205{ 5244{
3206 if (expect_false (ev_is_active (w))) 5245 if (ecb_expect_false (ev_is_active (w)))
3207 return; 5246 return;
3208 5247
5248 w->sent = 0;
5249
3209 evpipe_init (EV_A); 5250 evpipe_init (EV_A);
3210 5251
3211 EV_FREQUENT_CHECK; 5252 EV_FREQUENT_CHECK;
3212 5253
3213 ev_start (EV_A_ (W)w, ++asynccnt); 5254 ev_start (EV_A_ (W)w, ++asynccnt);
3214 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 5255 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
3215 asyncs [asynccnt - 1] = w; 5256 asyncs [asynccnt - 1] = w;
3216 5257
3217 EV_FREQUENT_CHECK; 5258 EV_FREQUENT_CHECK;
3218} 5259}
3219 5260
3220void 5261void
3221ev_async_stop (EV_P_ ev_async *w) 5262ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
3222{ 5263{
3223 clear_pending (EV_A_ (W)w); 5264 clear_pending (EV_A_ (W)w);
3224 if (expect_false (!ev_is_active (w))) 5265 if (ecb_expect_false (!ev_is_active (w)))
3225 return; 5266 return;
3226 5267
3227 EV_FREQUENT_CHECK; 5268 EV_FREQUENT_CHECK;
3228 5269
3229 { 5270 {
… …
3237 5278
3238 EV_FREQUENT_CHECK; 5279 EV_FREQUENT_CHECK;
3239} 5280}
3240 5281
3241void 5282void
3242ev_async_send (EV_P_ ev_async *w) 5283ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
3243{ 5284{
3244 w->sent = 1; 5285 w->sent = 1;
3245 evpipe_write (EV_A_ &gotasync); 5286 evpipe_write (EV_A_ &async_pending);
3246} 5287}
3247#endif 5288#endif
3248 5289
3249/*****************************************************************************/ 5290/*****************************************************************************/
3250 5291
… …
3284 5325
3285 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5326 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3286} 5327}
3287 5328
3288void 5329void
3289ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 5330ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
3290{ 5331{
3291 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5332 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3292
3293 if (expect_false (!once))
3294 {
3295 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
3296 return;
3297 }
3298 5333
3299 once->cb = cb; 5334 once->cb = cb;
3300 once->arg = arg; 5335 once->arg = arg;
3301 5336
3302 ev_init (&once->io, once_cb_io); 5337 ev_init (&once->io, once_cb_io);
… …
3315} 5350}
3316 5351
3317/*****************************************************************************/ 5352/*****************************************************************************/
3318 5353
3319#if EV_WALK_ENABLE 5354#if EV_WALK_ENABLE
5355ecb_cold
3320void 5356void
3321ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 5357ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
3322{ 5358{
3323 int i, j; 5359 int i, j;
3324 ev_watcher_list *wl, *wn; 5360 ev_watcher_list *wl, *wn;
3325 5361
3326 if (types & (EV_IO | EV_EMBED)) 5362 if (types & (EV_IO | EV_EMBED))
… …
3369 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 5405 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3370#endif 5406#endif
3371 5407
3372#if EV_IDLE_ENABLE 5408#if EV_IDLE_ENABLE
3373 if (types & EV_IDLE) 5409 if (types & EV_IDLE)
3374 for (j = NUMPRI; i--; ) 5410 for (j = NUMPRI; j--; )
3375 for (i = idlecnt [j]; i--; ) 5411 for (i = idlecnt [j]; i--; )
3376 cb (EV_A_ EV_IDLE, idles [j][i]); 5412 cb (EV_A_ EV_IDLE, idles [j][i]);
3377#endif 5413#endif
3378 5414
3379#if EV_FORK_ENABLE 5415#if EV_FORK_ENABLE
… …
3387 if (types & EV_ASYNC) 5423 if (types & EV_ASYNC)
3388 for (i = asynccnt; i--; ) 5424 for (i = asynccnt; i--; )
3389 cb (EV_A_ EV_ASYNC, asyncs [i]); 5425 cb (EV_A_ EV_ASYNC, asyncs [i]);
3390#endif 5426#endif
3391 5427
5428#if EV_PREPARE_ENABLE
3392 if (types & EV_PREPARE) 5429 if (types & EV_PREPARE)
3393 for (i = preparecnt; i--; ) 5430 for (i = preparecnt; i--; )
3394#if EV_EMBED_ENABLE 5431# if EV_EMBED_ENABLE
3395 if (ev_cb (prepares [i]) != embed_prepare_cb) 5432 if (ev_cb (prepares [i]) != embed_prepare_cb)
3396#endif 5433# endif
3397 cb (EV_A_ EV_PREPARE, prepares [i]); 5434 cb (EV_A_ EV_PREPARE, prepares [i]);
5435#endif
3398 5436
5437#if EV_CHECK_ENABLE
3399 if (types & EV_CHECK) 5438 if (types & EV_CHECK)
3400 for (i = checkcnt; i--; ) 5439 for (i = checkcnt; i--; )
3401 cb (EV_A_ EV_CHECK, checks [i]); 5440 cb (EV_A_ EV_CHECK, checks [i]);
5441#endif
3402 5442
5443#if EV_SIGNAL_ENABLE
3403 if (types & EV_SIGNAL) 5444 if (types & EV_SIGNAL)
3404 for (i = 0; i < signalmax; ++i) 5445 for (i = 0; i < EV_NSIG - 1; ++i)
3405 for (wl = signals [i].head; wl; ) 5446 for (wl = signals [i].head; wl; )
3406 { 5447 {
3407 wn = wl->next; 5448 wn = wl->next;
3408 cb (EV_A_ EV_SIGNAL, wl); 5449 cb (EV_A_ EV_SIGNAL, wl);
3409 wl = wn; 5450 wl = wn;
3410 } 5451 }
5452#endif
3411 5453
5454#if EV_CHILD_ENABLE
3412 if (types & EV_CHILD) 5455 if (types & EV_CHILD)
3413 for (i = EV_PID_HASHSIZE; i--; ) 5456 for (i = (EV_PID_HASHSIZE); i--; )
3414 for (wl = childs [i]; wl; ) 5457 for (wl = childs [i]; wl; )
3415 { 5458 {
3416 wn = wl->next; 5459 wn = wl->next;
3417 cb (EV_A_ EV_CHILD, wl); 5460 cb (EV_A_ EV_CHILD, wl);
3418 wl = wn; 5461 wl = wn;
3419 } 5462 }
5463#endif
3420/* EV_STAT 0x00001000 /* stat data changed */ 5464/* EV_STAT 0x00001000 /* stat data changed */
3421/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 5465/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3422} 5466}
3423#endif 5467#endif
3424 5468
3425#if EV_MULTIPLICITY 5469#if EV_MULTIPLICITY
3426 #include "ev_wrap.h" 5470 #include "ev_wrap.h"
3427#endif 5471#endif
3428 5472
3429#ifdef __cplusplus
3430}
3431#endif
3432

Diff Legend

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