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Comparing libev/ev.c (file contents):
Revision 1.292 by root, Mon Jun 29 07:22:56 2009 UTC vs.
Revision 1.535 by sf-exg, Mon May 17 15:41:10 2021 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) 2007-2020 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_register && __linux && !__alpha
497# define SYS_io_uring_setup 425
498# define SYS_io_uring_enter 426
499# define SYS_io_uring_register 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 */ 584#define MAX_BLOCKTIME2 1500001.07 /* same, but when timerfd is used to detect jumps, also safe delay to not overflow */
374 585
586/* find a portable timestamp that is "always" in the future but fits into time_t.
587 * this is quite hard, and we are mostly guessing - we handle 32 bit signed/unsigned time_t,
588 * and sizes larger than 32 bit, and maybe the unlikely floating point time_t */
589#define EV_TSTAMP_HUGE \
590 (sizeof (time_t) >= 8 ? 10000000000000. \
591 : 0 < (time_t)4294967295 ? 4294967295. \
592 : 2147483647.) \
593
594#ifndef EV_TS_CONST
595# define EV_TS_CONST(nv) nv
596# define EV_TS_TO_MSEC(a) a * 1e3 + 0.9999
597# define EV_TS_FROM_USEC(us) us * 1e-6
598# define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
599# define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
600# define EV_TV_GET(tv) ((tv).tv_sec + (tv).tv_usec * 1e-6)
601# define EV_TS_GET(ts) ((ts).tv_sec + (ts).tv_nsec * 1e-9)
602#endif
603
604/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
605/* ECB.H BEGIN */
606/*
607 * libecb - http://software.schmorp.de/pkg/libecb
608 *
609 * Copyright (©) 2009-2015,2018-2020 Marc Alexander Lehmann <libecb@schmorp.de>
610 * Copyright (©) 2011 Emanuele Giaquinta
611 * All rights reserved.
612 *
613 * Redistribution and use in source and binary forms, with or without modifica-
614 * tion, are permitted provided that the following conditions are met:
615 *
616 * 1. Redistributions of source code must retain the above copyright notice,
617 * this list of conditions and the following disclaimer.
618 *
619 * 2. Redistributions in binary form must reproduce the above copyright
620 * notice, this list of conditions and the following disclaimer in the
621 * documentation and/or other materials provided with the distribution.
622 *
623 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
624 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
625 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
626 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
627 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
628 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
629 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
630 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
631 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
632 * OF THE POSSIBILITY OF SUCH DAMAGE.
633 *
634 * Alternatively, the contents of this file may be used under the terms of
635 * the GNU General Public License ("GPL") version 2 or any later version,
636 * in which case the provisions of the GPL are applicable instead of
637 * the above. If you wish to allow the use of your version of this file
638 * only under the terms of the GPL and not to allow others to use your
639 * version of this file under the BSD license, indicate your decision
640 * by deleting the provisions above and replace them with the notice
641 * and other provisions required by the GPL. If you do not delete the
642 * provisions above, a recipient may use your version of this file under
643 * either the BSD or the GPL.
644 */
645
646#ifndef ECB_H
647#define ECB_H
648
649/* 16 bits major, 16 bits minor */
650#define ECB_VERSION 0x00010008
651
652#include <string.h> /* for memcpy */
653
654#if defined (_WIN32) && !defined (__MINGW32__)
655 typedef signed char int8_t;
656 typedef unsigned char uint8_t;
657 typedef signed char int_fast8_t;
658 typedef unsigned char uint_fast8_t;
659 typedef signed short int16_t;
660 typedef unsigned short uint16_t;
661 typedef signed int int_fast16_t;
662 typedef unsigned int uint_fast16_t;
663 typedef signed int int32_t;
664 typedef unsigned int uint32_t;
665 typedef signed int int_fast32_t;
666 typedef unsigned int uint_fast32_t;
375#if __GNUC__ >= 4 667 #if __GNUC__
376# define expect(expr,value) __builtin_expect ((expr),(value)) 668 typedef signed long long int64_t;
377# define noinline __attribute__ ((noinline)) 669 typedef unsigned long long uint64_t;
670 #else /* _MSC_VER || __BORLANDC__ */
671 typedef signed __int64 int64_t;
672 typedef unsigned __int64 uint64_t;
673 #endif
674 typedef int64_t int_fast64_t;
675 typedef uint64_t uint_fast64_t;
676 #ifdef _WIN64
677 #define ECB_PTRSIZE 8
678 typedef uint64_t uintptr_t;
679 typedef int64_t intptr_t;
680 #else
681 #define ECB_PTRSIZE 4
682 typedef uint32_t uintptr_t;
683 typedef int32_t intptr_t;
684 #endif
378#else 685#else
379# define expect(expr,value) (expr) 686 #include <inttypes.h>
380# define noinline 687 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
381# if __STDC_VERSION__ < 199901L && __GNUC__ < 2 688 #define ECB_PTRSIZE 8
382# define inline 689 #else
690 #define ECB_PTRSIZE 4
691 #endif
383# endif 692#endif
693
694#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
695#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
696
697#ifndef ECB_OPTIMIZE_SIZE
698 #if __OPTIMIZE_SIZE__
699 #define ECB_OPTIMIZE_SIZE 1
700 #else
701 #define ECB_OPTIMIZE_SIZE 0
384#endif 702 #endif
703#endif
385 704
386#define expect_false(expr) expect ((expr) != 0, 0) 705/* work around x32 idiocy by defining proper macros */
387#define expect_true(expr) expect ((expr) != 0, 1) 706#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
388#define inline_size static inline 707 #if _ILP32
708 #define ECB_AMD64_X32 1
709 #else
710 #define ECB_AMD64 1
711 #endif
712#endif
389 713
390#if EV_MINIMAL 714/* many compilers define _GNUC_ to some versions but then only implement
391# define inline_speed static noinline 715 * what their idiot authors think are the "more important" extensions,
716 * causing enormous grief in return for some better fake benchmark numbers.
717 * or so.
718 * we try to detect these and simply assume they are not gcc - if they have
719 * an issue with that they should have done it right in the first place.
720 */
721#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
722 #define ECB_GCC_VERSION(major,minor) 0
392#else 723#else
724 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
725#endif
726
727#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
728
729#if __clang__ && defined __has_builtin
730 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
731#else
732 #define ECB_CLANG_BUILTIN(x) 0
733#endif
734
735#if __clang__ && defined __has_extension
736 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
737#else
738 #define ECB_CLANG_EXTENSION(x) 0
739#endif
740
741#define ECB_CPP (__cplusplus+0)
742#define ECB_CPP11 (__cplusplus >= 201103L)
743#define ECB_CPP14 (__cplusplus >= 201402L)
744#define ECB_CPP17 (__cplusplus >= 201703L)
745
746#if ECB_CPP
747 #define ECB_C 0
748 #define ECB_STDC_VERSION 0
749#else
750 #define ECB_C 1
751 #define ECB_STDC_VERSION __STDC_VERSION__
752#endif
753
754#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
755#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
756#define ECB_C17 (ECB_STDC_VERSION >= 201710L)
757
758#if ECB_CPP
759 #define ECB_EXTERN_C extern "C"
760 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
761 #define ECB_EXTERN_C_END }
762#else
763 #define ECB_EXTERN_C extern
764 #define ECB_EXTERN_C_BEG
765 #define ECB_EXTERN_C_END
766#endif
767
768/*****************************************************************************/
769
770/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
771/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
772
773#if ECB_NO_THREADS
774 #define ECB_NO_SMP 1
775#endif
776
777#if ECB_NO_SMP
778 #define ECB_MEMORY_FENCE do { } while (0)
779#endif
780
781/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
782#if __xlC__ && ECB_CPP
783 #include <builtins.h>
784#endif
785
786#if 1400 <= _MSC_VER
787 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
788#endif
789
790#ifndef ECB_MEMORY_FENCE
791 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
792 #define ECB_MEMORY_FENCE_RELAXED __asm__ __volatile__ ("" : : : "memory")
793 #if __i386 || __i386__
794 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
795 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
796 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
797 #elif ECB_GCC_AMD64
798 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
799 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
800 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
801 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
802 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
803 #elif defined __ARM_ARCH_2__ \
804 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
805 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
806 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
807 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
808 || defined __ARM_ARCH_5TEJ__
809 /* should not need any, unless running old code on newer cpu - arm doesn't support that */
810 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
811 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
812 || defined __ARM_ARCH_6T2__
813 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
814 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
815 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
816 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
817 #elif __aarch64__
818 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
819 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
820 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
821 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
822 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
823 #elif defined __s390__ || defined __s390x__
824 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
825 #elif defined __mips__
826 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
827 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
828 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
829 #elif defined __alpha__
830 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
831 #elif defined __hppa__
832 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
833 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
834 #elif defined __ia64__
835 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
836 #elif defined __m68k__
837 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
838 #elif defined __m88k__
839 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
840 #elif defined __sh__
841 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
842 #endif
843 #endif
844#endif
845
846#ifndef ECB_MEMORY_FENCE
847 #if ECB_GCC_VERSION(4,7)
848 /* see comment below (stdatomic.h) about the C11 memory model. */
849 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
850 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
851 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
852 #define ECB_MEMORY_FENCE_RELAXED __atomic_thread_fence (__ATOMIC_RELAXED)
853
854 #elif ECB_CLANG_EXTENSION(c_atomic)
855 /* see comment below (stdatomic.h) about the C11 memory model. */
856 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
857 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
858 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
859 #define ECB_MEMORY_FENCE_RELAXED __c11_atomic_thread_fence (__ATOMIC_RELAXED)
860
861 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
862 #define ECB_MEMORY_FENCE __sync_synchronize ()
863 #elif _MSC_VER >= 1500 /* VC++ 2008 */
864 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
865 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
866 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
867 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
868 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
869 #elif _MSC_VER >= 1400 /* VC++ 2005 */
870 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
871 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
872 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
873 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
874 #elif defined _WIN32
875 #include <WinNT.h>
876 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
877 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
878 #include <mbarrier.h>
879 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
880 #define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier ()
881 #define ECB_MEMORY_FENCE_RELEASE __machine_rel_barrier ()
882 #define ECB_MEMORY_FENCE_RELAXED __compiler_barrier ()
883 #elif __xlC__
884 #define ECB_MEMORY_FENCE __sync ()
885 #endif
886#endif
887
888#ifndef ECB_MEMORY_FENCE
889 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
890 /* we assume that these memory fences work on all variables/all memory accesses, */
891 /* not just C11 atomics and atomic accesses */
892 #include <stdatomic.h>
893 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
894 #define ECB_MEMORY_FENCE_ACQUIRE atomic_thread_fence (memory_order_acquire)
895 #define ECB_MEMORY_FENCE_RELEASE atomic_thread_fence (memory_order_release)
896 #endif
897#endif
898
899#ifndef ECB_MEMORY_FENCE
900 #if !ECB_AVOID_PTHREADS
901 /*
902 * if you get undefined symbol references to pthread_mutex_lock,
903 * or failure to find pthread.h, then you should implement
904 * the ECB_MEMORY_FENCE operations for your cpu/compiler
905 * OR provide pthread.h and link against the posix thread library
906 * of your system.
907 */
908 #include <pthread.h>
909 #define ECB_NEEDS_PTHREADS 1
910 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
911
912 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
913 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
914 #endif
915#endif
916
917#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
918 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
919#endif
920
921#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
922 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
923#endif
924
925#if !defined ECB_MEMORY_FENCE_RELAXED && defined ECB_MEMORY_FENCE
926 #define ECB_MEMORY_FENCE_RELAXED ECB_MEMORY_FENCE /* very heavy-handed */
927#endif
928
929/*****************************************************************************/
930
931#if ECB_CPP
932 #define ecb_inline static inline
933#elif ECB_GCC_VERSION(2,5)
934 #define ecb_inline static __inline__
935#elif ECB_C99
936 #define ecb_inline static inline
937#else
938 #define ecb_inline static
939#endif
940
941#if ECB_GCC_VERSION(3,3)
942 #define ecb_restrict __restrict__
943#elif ECB_C99
944 #define ecb_restrict restrict
945#else
946 #define ecb_restrict
947#endif
948
949typedef int ecb_bool;
950
951#define ECB_CONCAT_(a, b) a ## b
952#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
953#define ECB_STRINGIFY_(a) # a
954#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
955#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
956
957#define ecb_function_ ecb_inline
958
959#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
960 #define ecb_attribute(attrlist) __attribute__ (attrlist)
961#else
962 #define ecb_attribute(attrlist)
963#endif
964
965#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
966 #define ecb_is_constant(expr) __builtin_constant_p (expr)
967#else
968 /* possible C11 impl for integral types
969 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
970 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
971
972 #define ecb_is_constant(expr) 0
973#endif
974
975#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
976 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
977#else
978 #define ecb_expect(expr,value) (expr)
979#endif
980
981#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
982 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
983#else
984 #define ecb_prefetch(addr,rw,locality)
985#endif
986
987/* no emulation for ecb_decltype */
988#if ECB_CPP11
989 // older implementations might have problems with decltype(x)::type, work around it
990 template<class T> struct ecb_decltype_t { typedef T type; };
991 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
992#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
993 #define ecb_decltype(x) __typeof__ (x)
994#endif
995
996#if _MSC_VER >= 1300
997 #define ecb_deprecated __declspec (deprecated)
998#else
999 #define ecb_deprecated ecb_attribute ((__deprecated__))
1000#endif
1001
1002#if _MSC_VER >= 1500
1003 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
1004#elif ECB_GCC_VERSION(4,5)
1005 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
1006#else
1007 #define ecb_deprecated_message(msg) ecb_deprecated
1008#endif
1009
1010#if _MSC_VER >= 1400
1011 #define ecb_noinline __declspec (noinline)
1012#else
1013 #define ecb_noinline ecb_attribute ((__noinline__))
1014#endif
1015
1016#define ecb_unused ecb_attribute ((__unused__))
1017#define ecb_const ecb_attribute ((__const__))
1018#define ecb_pure ecb_attribute ((__pure__))
1019
1020#if ECB_C11 || __IBMC_NORETURN
1021 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
1022 #define ecb_noreturn _Noreturn
1023#elif ECB_CPP11
1024 #define ecb_noreturn [[noreturn]]
1025#elif _MSC_VER >= 1200
1026 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
1027 #define ecb_noreturn __declspec (noreturn)
1028#else
1029 #define ecb_noreturn ecb_attribute ((__noreturn__))
1030#endif
1031
1032#if ECB_GCC_VERSION(4,3)
1033 #define ecb_artificial ecb_attribute ((__artificial__))
1034 #define ecb_hot ecb_attribute ((__hot__))
1035 #define ecb_cold ecb_attribute ((__cold__))
1036#else
1037 #define ecb_artificial
1038 #define ecb_hot
1039 #define ecb_cold
1040#endif
1041
1042/* put around conditional expressions if you are very sure that the */
1043/* expression is mostly true or mostly false. note that these return */
1044/* booleans, not the expression. */
1045#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
1046#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
1047/* for compatibility to the rest of the world */
1048#define ecb_likely(expr) ecb_expect_true (expr)
1049#define ecb_unlikely(expr) ecb_expect_false (expr)
1050
1051/* count trailing zero bits and count # of one bits */
1052#if ECB_GCC_VERSION(3,4) \
1053 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
1054 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
1055 && ECB_CLANG_BUILTIN(__builtin_popcount))
1056 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
1057 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
1058 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
1059 #define ecb_ctz32(x) __builtin_ctz (x)
1060 #define ecb_ctz64(x) __builtin_ctzll (x)
1061 #define ecb_popcount32(x) __builtin_popcount (x)
1062 /* no popcountll */
1063#else
1064 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
1065 ecb_function_ ecb_const int
1066 ecb_ctz32 (uint32_t x)
1067 {
1068#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1069 unsigned long r;
1070 _BitScanForward (&r, x);
1071 return (int)r;
1072#else
1073 int r = 0;
1074
1075 x &= ~x + 1; /* this isolates the lowest bit */
1076
1077#if ECB_branchless_on_i386
1078 r += !!(x & 0xaaaaaaaa) << 0;
1079 r += !!(x & 0xcccccccc) << 1;
1080 r += !!(x & 0xf0f0f0f0) << 2;
1081 r += !!(x & 0xff00ff00) << 3;
1082 r += !!(x & 0xffff0000) << 4;
1083#else
1084 if (x & 0xaaaaaaaa) r += 1;
1085 if (x & 0xcccccccc) r += 2;
1086 if (x & 0xf0f0f0f0) r += 4;
1087 if (x & 0xff00ff00) r += 8;
1088 if (x & 0xffff0000) r += 16;
1089#endif
1090
1091 return r;
1092#endif
1093 }
1094
1095 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
1096 ecb_function_ ecb_const int
1097 ecb_ctz64 (uint64_t x)
1098 {
1099#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1100 unsigned long r;
1101 _BitScanForward64 (&r, x);
1102 return (int)r;
1103#else
1104 int shift = x & 0xffffffff ? 0 : 32;
1105 return ecb_ctz32 (x >> shift) + shift;
1106#endif
1107 }
1108
1109 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
1110 ecb_function_ ecb_const int
1111 ecb_popcount32 (uint32_t x)
1112 {
1113 x -= (x >> 1) & 0x55555555;
1114 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
1115 x = ((x >> 4) + x) & 0x0f0f0f0f;
1116 x *= 0x01010101;
1117
1118 return x >> 24;
1119 }
1120
1121 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
1122 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
1123 {
1124#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1125 unsigned long r;
1126 _BitScanReverse (&r, x);
1127 return (int)r;
1128#else
1129 int r = 0;
1130
1131 if (x >> 16) { x >>= 16; r += 16; }
1132 if (x >> 8) { x >>= 8; r += 8; }
1133 if (x >> 4) { x >>= 4; r += 4; }
1134 if (x >> 2) { x >>= 2; r += 2; }
1135 if (x >> 1) { r += 1; }
1136
1137 return r;
1138#endif
1139 }
1140
1141 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
1142 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
1143 {
1144#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1145 unsigned long r;
1146 _BitScanReverse64 (&r, x);
1147 return (int)r;
1148#else
1149 int r = 0;
1150
1151 if (x >> 32) { x >>= 32; r += 32; }
1152
1153 return r + ecb_ld32 (x);
1154#endif
1155 }
1156#endif
1157
1158ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
1159ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
1160ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
1161ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
1162
1163ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
1164ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
1165{
1166 return ( (x * 0x0802U & 0x22110U)
1167 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
1168}
1169
1170ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
1171ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
1172{
1173 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
1174 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
1175 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
1176 x = ( x >> 8 ) | ( x << 8);
1177
1178 return x;
1179}
1180
1181ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
1182ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
1183{
1184 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
1185 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
1186 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
1187 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
1188 x = ( x >> 16 ) | ( x << 16);
1189
1190 return x;
1191}
1192
1193/* popcount64 is only available on 64 bit cpus as gcc builtin */
1194/* so for this version we are lazy */
1195ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
1196ecb_function_ ecb_const int
1197ecb_popcount64 (uint64_t x)
1198{
1199 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
1200}
1201
1202ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
1203ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
1204ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
1205ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
1206ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
1207ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
1208ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
1209ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
1210
1211ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
1212ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
1213ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
1214ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
1215ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
1216ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
1217ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
1218ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
1219
1220#if ECB_CPP
1221
1222inline uint8_t ecb_ctz (uint8_t v) { return ecb_ctz32 (v); }
1223inline uint16_t ecb_ctz (uint16_t v) { return ecb_ctz32 (v); }
1224inline uint32_t ecb_ctz (uint32_t v) { return ecb_ctz32 (v); }
1225inline uint64_t ecb_ctz (uint64_t v) { return ecb_ctz64 (v); }
1226
1227inline bool ecb_is_pot (uint8_t v) { return ecb_is_pot32 (v); }
1228inline bool ecb_is_pot (uint16_t v) { return ecb_is_pot32 (v); }
1229inline bool ecb_is_pot (uint32_t v) { return ecb_is_pot32 (v); }
1230inline bool ecb_is_pot (uint64_t v) { return ecb_is_pot64 (v); }
1231
1232inline int ecb_ld (uint8_t v) { return ecb_ld32 (v); }
1233inline int ecb_ld (uint16_t v) { return ecb_ld32 (v); }
1234inline int ecb_ld (uint32_t v) { return ecb_ld32 (v); }
1235inline int ecb_ld (uint64_t v) { return ecb_ld64 (v); }
1236
1237inline int ecb_popcount (uint8_t v) { return ecb_popcount32 (v); }
1238inline int ecb_popcount (uint16_t v) { return ecb_popcount32 (v); }
1239inline int ecb_popcount (uint32_t v) { return ecb_popcount32 (v); }
1240inline int ecb_popcount (uint64_t v) { return ecb_popcount64 (v); }
1241
1242inline uint8_t ecb_bitrev (uint8_t v) { return ecb_bitrev8 (v); }
1243inline uint16_t ecb_bitrev (uint16_t v) { return ecb_bitrev16 (v); }
1244inline uint32_t ecb_bitrev (uint32_t v) { return ecb_bitrev32 (v); }
1245
1246inline uint8_t ecb_rotl (uint8_t v, unsigned int count) { return ecb_rotl8 (v, count); }
1247inline uint16_t ecb_rotl (uint16_t v, unsigned int count) { return ecb_rotl16 (v, count); }
1248inline uint32_t ecb_rotl (uint32_t v, unsigned int count) { return ecb_rotl32 (v, count); }
1249inline uint64_t ecb_rotl (uint64_t v, unsigned int count) { return ecb_rotl64 (v, count); }
1250
1251inline uint8_t ecb_rotr (uint8_t v, unsigned int count) { return ecb_rotr8 (v, count); }
1252inline uint16_t ecb_rotr (uint16_t v, unsigned int count) { return ecb_rotr16 (v, count); }
1253inline uint32_t ecb_rotr (uint32_t v, unsigned int count) { return ecb_rotr32 (v, count); }
1254inline uint64_t ecb_rotr (uint64_t v, unsigned int count) { return ecb_rotr64 (v, count); }
1255
1256#endif
1257
1258#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1259 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1260 #define ecb_bswap16(x) __builtin_bswap16 (x)
1261 #else
1262 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1263 #endif
1264 #define ecb_bswap32(x) __builtin_bswap32 (x)
1265 #define ecb_bswap64(x) __builtin_bswap64 (x)
1266#elif _MSC_VER
1267 #include <stdlib.h>
1268 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1269 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1270 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
1271#else
1272 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
1273 ecb_function_ ecb_const uint16_t
1274 ecb_bswap16 (uint16_t x)
1275 {
1276 return ecb_rotl16 (x, 8);
1277 }
1278
1279 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
1280 ecb_function_ ecb_const uint32_t
1281 ecb_bswap32 (uint32_t x)
1282 {
1283 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
1284 }
1285
1286 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
1287 ecb_function_ ecb_const uint64_t
1288 ecb_bswap64 (uint64_t x)
1289 {
1290 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
1291 }
1292#endif
1293
1294#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
1295 #define ecb_unreachable() __builtin_unreachable ()
1296#else
1297 /* this seems to work fine, but gcc always emits a warning for it :/ */
1298 ecb_inline ecb_noreturn void ecb_unreachable (void);
1299 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
1300#endif
1301
1302/* try to tell the compiler that some condition is definitely true */
1303#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
1304
1305ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
1306ecb_inline ecb_const uint32_t
1307ecb_byteorder_helper (void)
1308{
1309 /* the union code still generates code under pressure in gcc, */
1310 /* but less than using pointers, and always seems to */
1311 /* successfully return a constant. */
1312 /* the reason why we have this horrible preprocessor mess */
1313 /* is to avoid it in all cases, at least on common architectures */
1314 /* or when using a recent enough gcc version (>= 4.6) */
1315#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1316 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1317 #define ECB_LITTLE_ENDIAN 1
1318 return 0x44332211;
1319#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1320 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1321 #define ECB_BIG_ENDIAN 1
1322 return 0x11223344;
1323#else
1324 union
1325 {
1326 uint8_t c[4];
1327 uint32_t u;
1328 } u = { 0x11, 0x22, 0x33, 0x44 };
1329 return u.u;
1330#endif
1331}
1332
1333ecb_inline ecb_const ecb_bool ecb_big_endian (void);
1334ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
1335ecb_inline ecb_const ecb_bool ecb_little_endian (void);
1336ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
1337
1338/*****************************************************************************/
1339/* unaligned load/store */
1340
1341ecb_inline uint_fast16_t ecb_be_u16_to_host (uint_fast16_t v) { return ecb_little_endian () ? ecb_bswap16 (v) : v; }
1342ecb_inline uint_fast32_t ecb_be_u32_to_host (uint_fast32_t v) { return ecb_little_endian () ? ecb_bswap32 (v) : v; }
1343ecb_inline uint_fast64_t ecb_be_u64_to_host (uint_fast64_t v) { return ecb_little_endian () ? ecb_bswap64 (v) : v; }
1344
1345ecb_inline uint_fast16_t ecb_le_u16_to_host (uint_fast16_t v) { return ecb_big_endian () ? ecb_bswap16 (v) : v; }
1346ecb_inline uint_fast32_t ecb_le_u32_to_host (uint_fast32_t v) { return ecb_big_endian () ? ecb_bswap32 (v) : v; }
1347ecb_inline uint_fast64_t ecb_le_u64_to_host (uint_fast64_t v) { return ecb_big_endian () ? ecb_bswap64 (v) : v; }
1348
1349ecb_inline uint_fast16_t ecb_peek_u16_u (const void *ptr) { uint16_t v; memcpy (&v, ptr, sizeof (v)); return v; }
1350ecb_inline uint_fast32_t ecb_peek_u32_u (const void *ptr) { uint32_t v; memcpy (&v, ptr, sizeof (v)); return v; }
1351ecb_inline uint_fast64_t ecb_peek_u64_u (const void *ptr) { uint64_t v; memcpy (&v, ptr, sizeof (v)); return v; }
1352
1353ecb_inline uint_fast16_t ecb_peek_be_u16_u (const void *ptr) { return ecb_be_u16_to_host (ecb_peek_u16_u (ptr)); }
1354ecb_inline uint_fast32_t ecb_peek_be_u32_u (const void *ptr) { return ecb_be_u32_to_host (ecb_peek_u32_u (ptr)); }
1355ecb_inline uint_fast64_t ecb_peek_be_u64_u (const void *ptr) { return ecb_be_u64_to_host (ecb_peek_u64_u (ptr)); }
1356
1357ecb_inline uint_fast16_t ecb_peek_le_u16_u (const void *ptr) { return ecb_le_u16_to_host (ecb_peek_u16_u (ptr)); }
1358ecb_inline uint_fast32_t ecb_peek_le_u32_u (const void *ptr) { return ecb_le_u32_to_host (ecb_peek_u32_u (ptr)); }
1359ecb_inline uint_fast64_t ecb_peek_le_u64_u (const void *ptr) { return ecb_le_u64_to_host (ecb_peek_u64_u (ptr)); }
1360
1361ecb_inline uint_fast16_t ecb_host_to_be_u16 (uint_fast16_t v) { return ecb_little_endian () ? ecb_bswap16 (v) : v; }
1362ecb_inline uint_fast32_t ecb_host_to_be_u32 (uint_fast32_t v) { return ecb_little_endian () ? ecb_bswap32 (v) : v; }
1363ecb_inline uint_fast64_t ecb_host_to_be_u64 (uint_fast64_t v) { return ecb_little_endian () ? ecb_bswap64 (v) : v; }
1364
1365ecb_inline uint_fast16_t ecb_host_to_le_u16 (uint_fast16_t v) { return ecb_big_endian () ? ecb_bswap16 (v) : v; }
1366ecb_inline uint_fast32_t ecb_host_to_le_u32 (uint_fast32_t v) { return ecb_big_endian () ? ecb_bswap32 (v) : v; }
1367ecb_inline uint_fast64_t ecb_host_to_le_u64 (uint_fast64_t v) { return ecb_big_endian () ? ecb_bswap64 (v) : v; }
1368
1369ecb_inline void ecb_poke_u16_u (void *ptr, uint16_t v) { memcpy (ptr, &v, sizeof (v)); }
1370ecb_inline void ecb_poke_u32_u (void *ptr, uint32_t v) { memcpy (ptr, &v, sizeof (v)); }
1371ecb_inline void ecb_poke_u64_u (void *ptr, uint64_t v) { memcpy (ptr, &v, sizeof (v)); }
1372
1373ecb_inline void ecb_poke_be_u16_u (void *ptr, uint_fast16_t v) { ecb_poke_u16_u (ptr, ecb_host_to_be_u16 (v)); }
1374ecb_inline void ecb_poke_be_u32_u (void *ptr, uint_fast32_t v) { ecb_poke_u32_u (ptr, ecb_host_to_be_u32 (v)); }
1375ecb_inline void ecb_poke_be_u64_u (void *ptr, uint_fast64_t v) { ecb_poke_u64_u (ptr, ecb_host_to_be_u64 (v)); }
1376
1377ecb_inline void ecb_poke_le_u16_u (void *ptr, uint_fast16_t v) { ecb_poke_u16_u (ptr, ecb_host_to_le_u16 (v)); }
1378ecb_inline void ecb_poke_le_u32_u (void *ptr, uint_fast32_t v) { ecb_poke_u32_u (ptr, ecb_host_to_le_u32 (v)); }
1379ecb_inline void ecb_poke_le_u64_u (void *ptr, uint_fast64_t v) { ecb_poke_u64_u (ptr, ecb_host_to_le_u64 (v)); }
1380
1381#if ECB_CPP
1382
1383inline uint8_t ecb_bswap (uint8_t v) { return v; }
1384inline uint16_t ecb_bswap (uint16_t v) { return ecb_bswap16 (v); }
1385inline uint32_t ecb_bswap (uint32_t v) { return ecb_bswap32 (v); }
1386inline uint64_t ecb_bswap (uint64_t v) { return ecb_bswap64 (v); }
1387
1388template<typename T> inline T ecb_be_to_host (T v) { return ecb_little_endian () ? ecb_bswap (v) : v; }
1389template<typename T> inline T ecb_le_to_host (T v) { return ecb_big_endian () ? ecb_bswap (v) : v; }
1390template<typename T> inline T ecb_peek (const void *ptr) { return *(const T *)ptr; }
1391template<typename T> inline T ecb_peek_be (const void *ptr) { return ecb_be_to_host (ecb_peek <T> (ptr)); }
1392template<typename T> inline T ecb_peek_le (const void *ptr) { return ecb_le_to_host (ecb_peek <T> (ptr)); }
1393template<typename T> inline T ecb_peek_u (const void *ptr) { T v; memcpy (&v, ptr, sizeof (v)); return v; }
1394template<typename T> inline T ecb_peek_be_u (const void *ptr) { return ecb_be_to_host (ecb_peek_u<T> (ptr)); }
1395template<typename T> inline T ecb_peek_le_u (const void *ptr) { return ecb_le_to_host (ecb_peek_u<T> (ptr)); }
1396
1397template<typename T> inline T ecb_host_to_be (T v) { return ecb_little_endian () ? ecb_bswap (v) : v; }
1398template<typename T> inline T ecb_host_to_le (T v) { return ecb_big_endian () ? ecb_bswap (v) : v; }
1399template<typename T> inline void ecb_poke (void *ptr, T v) { *(T *)ptr = v; }
1400template<typename T> inline void ecb_poke_be (void *ptr, T v) { return ecb_poke <T> (ptr, ecb_host_to_be (v)); }
1401template<typename T> inline void ecb_poke_le (void *ptr, T v) { return ecb_poke <T> (ptr, ecb_host_to_le (v)); }
1402template<typename T> inline void ecb_poke_u (void *ptr, T v) { memcpy (ptr, &v, sizeof (v)); }
1403template<typename T> inline void ecb_poke_be_u (void *ptr, T v) { return ecb_poke_u<T> (ptr, ecb_host_to_be (v)); }
1404template<typename T> inline void ecb_poke_le_u (void *ptr, T v) { return ecb_poke_u<T> (ptr, ecb_host_to_le (v)); }
1405
1406#endif
1407
1408/*****************************************************************************/
1409
1410#if ECB_GCC_VERSION(3,0) || ECB_C99
1411 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1412#else
1413 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1414#endif
1415
1416#if ECB_CPP
1417 template<typename T>
1418 static inline T ecb_div_rd (T val, T div)
1419 {
1420 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1421 }
1422 template<typename T>
1423 static inline T ecb_div_ru (T val, T div)
1424 {
1425 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1426 }
1427#else
1428 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1429 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1430#endif
1431
1432#if ecb_cplusplus_does_not_suck
1433 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1434 template<typename T, int N>
1435 static inline int ecb_array_length (const T (&arr)[N])
1436 {
1437 return N;
1438 }
1439#else
1440 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1441#endif
1442
1443/*****************************************************************************/
1444
1445ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1446ecb_function_ ecb_const uint32_t
1447ecb_binary16_to_binary32 (uint32_t x)
1448{
1449 unsigned int s = (x & 0x8000) << (31 - 15);
1450 int e = (x >> 10) & 0x001f;
1451 unsigned int m = x & 0x03ff;
1452
1453 if (ecb_expect_false (e == 31))
1454 /* infinity or NaN */
1455 e = 255 - (127 - 15);
1456 else if (ecb_expect_false (!e))
1457 {
1458 if (ecb_expect_true (!m))
1459 /* zero, handled by code below by forcing e to 0 */
1460 e = 0 - (127 - 15);
1461 else
1462 {
1463 /* subnormal, renormalise */
1464 unsigned int s = 10 - ecb_ld32 (m);
1465
1466 m = (m << s) & 0x3ff; /* mask implicit bit */
1467 e -= s - 1;
1468 }
1469 }
1470
1471 /* e and m now are normalised, or zero, (or inf or nan) */
1472 e += 127 - 15;
1473
1474 return s | (e << 23) | (m << (23 - 10));
1475}
1476
1477ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1478ecb_function_ ecb_const uint16_t
1479ecb_binary32_to_binary16 (uint32_t x)
1480{
1481 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1482 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1483 unsigned int m = x & 0x007fffff;
1484
1485 x &= 0x7fffffff;
1486
1487 /* if it's within range of binary16 normals, use fast path */
1488 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1489 {
1490 /* mantissa round-to-even */
1491 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1492
1493 /* handle overflow */
1494 if (ecb_expect_false (m >= 0x00800000))
1495 {
1496 m >>= 1;
1497 e += 1;
1498 }
1499
1500 return s | (e << 10) | (m >> (23 - 10));
1501 }
1502
1503 /* handle large numbers and infinity */
1504 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1505 return s | 0x7c00;
1506
1507 /* handle zero, subnormals and small numbers */
1508 if (ecb_expect_true (x < 0x38800000))
1509 {
1510 /* zero */
1511 if (ecb_expect_true (!x))
1512 return s;
1513
1514 /* handle subnormals */
1515
1516 /* too small, will be zero */
1517 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1518 return s;
1519
1520 m |= 0x00800000; /* make implicit bit explicit */
1521
1522 /* very tricky - we need to round to the nearest e (+10) bit value */
1523 {
1524 unsigned int bits = 14 - e;
1525 unsigned int half = (1 << (bits - 1)) - 1;
1526 unsigned int even = (m >> bits) & 1;
1527
1528 /* if this overflows, we will end up with a normalised number */
1529 m = (m + half + even) >> bits;
1530 }
1531
1532 return s | m;
1533 }
1534
1535 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1536 m >>= 13;
1537
1538 return s | 0x7c00 | m | !m;
1539}
1540
1541/*******************************************************************************/
1542/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1543
1544/* basically, everything uses "ieee pure-endian" floating point numbers */
1545/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1546#if 0 \
1547 || __i386 || __i386__ \
1548 || ECB_GCC_AMD64 \
1549 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1550 || defined __s390__ || defined __s390x__ \
1551 || defined __mips__ \
1552 || defined __alpha__ \
1553 || defined __hppa__ \
1554 || defined __ia64__ \
1555 || defined __m68k__ \
1556 || defined __m88k__ \
1557 || defined __sh__ \
1558 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1559 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1560 || defined __aarch64__
1561 #define ECB_STDFP 1
1562#else
1563 #define ECB_STDFP 0
1564#endif
1565
1566#ifndef ECB_NO_LIBM
1567
1568 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1569
1570 /* only the oldest of old doesn't have this one. solaris. */
1571 #ifdef INFINITY
1572 #define ECB_INFINITY INFINITY
1573 #else
1574 #define ECB_INFINITY HUGE_VAL
1575 #endif
1576
1577 #ifdef NAN
1578 #define ECB_NAN NAN
1579 #else
1580 #define ECB_NAN ECB_INFINITY
1581 #endif
1582
1583 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1584 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1585 #define ecb_frexpf(x,e) frexpf ((x), (e))
1586 #else
1587 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1588 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1589 #endif
1590
1591 /* convert a float to ieee single/binary32 */
1592 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1593 ecb_function_ ecb_const uint32_t
1594 ecb_float_to_binary32 (float x)
1595 {
1596 uint32_t r;
1597
1598 #if ECB_STDFP
1599 memcpy (&r, &x, 4);
1600 #else
1601 /* slow emulation, works for anything but -0 */
1602 uint32_t m;
1603 int e;
1604
1605 if (x == 0e0f ) return 0x00000000U;
1606 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1607 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1608 if (x != x ) return 0x7fbfffffU;
1609
1610 m = ecb_frexpf (x, &e) * 0x1000000U;
1611
1612 r = m & 0x80000000U;
1613
1614 if (r)
1615 m = -m;
1616
1617 if (e <= -126)
1618 {
1619 m &= 0xffffffU;
1620 m >>= (-125 - e);
1621 e = -126;
1622 }
1623
1624 r |= (e + 126) << 23;
1625 r |= m & 0x7fffffU;
1626 #endif
1627
1628 return r;
1629 }
1630
1631 /* converts an ieee single/binary32 to a float */
1632 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1633 ecb_function_ ecb_const float
1634 ecb_binary32_to_float (uint32_t x)
1635 {
1636 float r;
1637
1638 #if ECB_STDFP
1639 memcpy (&r, &x, 4);
1640 #else
1641 /* emulation, only works for normals and subnormals and +0 */
1642 int neg = x >> 31;
1643 int e = (x >> 23) & 0xffU;
1644
1645 x &= 0x7fffffU;
1646
1647 if (e)
1648 x |= 0x800000U;
1649 else
1650 e = 1;
1651
1652 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1653 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1654
1655 r = neg ? -r : r;
1656 #endif
1657
1658 return r;
1659 }
1660
1661 /* convert a double to ieee double/binary64 */
1662 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1663 ecb_function_ ecb_const uint64_t
1664 ecb_double_to_binary64 (double x)
1665 {
1666 uint64_t r;
1667
1668 #if ECB_STDFP
1669 memcpy (&r, &x, 8);
1670 #else
1671 /* slow emulation, works for anything but -0 */
1672 uint64_t m;
1673 int e;
1674
1675 if (x == 0e0 ) return 0x0000000000000000U;
1676 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1677 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1678 if (x != x ) return 0X7ff7ffffffffffffU;
1679
1680 m = frexp (x, &e) * 0x20000000000000U;
1681
1682 r = m & 0x8000000000000000;;
1683
1684 if (r)
1685 m = -m;
1686
1687 if (e <= -1022)
1688 {
1689 m &= 0x1fffffffffffffU;
1690 m >>= (-1021 - e);
1691 e = -1022;
1692 }
1693
1694 r |= ((uint64_t)(e + 1022)) << 52;
1695 r |= m & 0xfffffffffffffU;
1696 #endif
1697
1698 return r;
1699 }
1700
1701 /* converts an ieee double/binary64 to a double */
1702 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1703 ecb_function_ ecb_const double
1704 ecb_binary64_to_double (uint64_t x)
1705 {
1706 double r;
1707
1708 #if ECB_STDFP
1709 memcpy (&r, &x, 8);
1710 #else
1711 /* emulation, only works for normals and subnormals and +0 */
1712 int neg = x >> 63;
1713 int e = (x >> 52) & 0x7ffU;
1714
1715 x &= 0xfffffffffffffU;
1716
1717 if (e)
1718 x |= 0x10000000000000U;
1719 else
1720 e = 1;
1721
1722 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1723 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1724
1725 r = neg ? -r : r;
1726 #endif
1727
1728 return r;
1729 }
1730
1731 /* convert a float to ieee half/binary16 */
1732 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1733 ecb_function_ ecb_const uint16_t
1734 ecb_float_to_binary16 (float x)
1735 {
1736 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1737 }
1738
1739 /* convert an ieee half/binary16 to float */
1740 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1741 ecb_function_ ecb_const float
1742 ecb_binary16_to_float (uint16_t x)
1743 {
1744 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1745 }
1746
1747#endif
1748
1749#endif
1750
1751/* ECB.H END */
1752
1753#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1754/* if your architecture doesn't need memory fences, e.g. because it is
1755 * single-cpu/core, or if you use libev in a project that doesn't use libev
1756 * from multiple threads, then you can define ECB_NO_THREADS when compiling
1757 * libev, in which cases the memory fences become nops.
1758 * alternatively, you can remove this #error and link against libpthread,
1759 * which will then provide the memory fences.
1760 */
1761# error "memory fences not defined for your architecture, please report"
1762#endif
1763
1764#ifndef ECB_MEMORY_FENCE
1765# define ECB_MEMORY_FENCE do { } while (0)
1766# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1767# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1768#endif
1769
1770#define inline_size ecb_inline
1771
1772#if EV_FEATURE_CODE
393# define inline_speed static inline 1773# define inline_speed ecb_inline
1774#else
1775# define inline_speed ecb_noinline static
394#endif 1776#endif
395 1777
1778/*****************************************************************************/
1779/* raw syscall wrappers */
1780
1781#if EV_NEED_SYSCALL
1782
1783#include <sys/syscall.h>
1784
1785/*
1786 * define some syscall wrappers for common architectures
1787 * this is mostly for nice looks during debugging, not performance.
1788 * our syscalls return < 0, not == -1, on error. which is good
1789 * enough for linux aio.
1790 * TODO: arm is also common nowadays, maybe even mips and x86
1791 * TODO: after implementing this, it suddenly looks like overkill, but its hard to remove...
1792 */
1793#if __GNUC__ && __linux && ECB_AMD64 && !EV_FEATURE_CODE
1794 /* the costly errno access probably kills this for size optimisation */
1795
1796 #define ev_syscall(nr,narg,arg1,arg2,arg3,arg4,arg5,arg6) \
1797 ({ \
1798 long res; \
1799 register unsigned long r6 __asm__ ("r9" ); \
1800 register unsigned long r5 __asm__ ("r8" ); \
1801 register unsigned long r4 __asm__ ("r10"); \
1802 register unsigned long r3 __asm__ ("rdx"); \
1803 register unsigned long r2 __asm__ ("rsi"); \
1804 register unsigned long r1 __asm__ ("rdi"); \
1805 if (narg >= 6) r6 = (unsigned long)(arg6); \
1806 if (narg >= 5) r5 = (unsigned long)(arg5); \
1807 if (narg >= 4) r4 = (unsigned long)(arg4); \
1808 if (narg >= 3) r3 = (unsigned long)(arg3); \
1809 if (narg >= 2) r2 = (unsigned long)(arg2); \
1810 if (narg >= 1) r1 = (unsigned long)(arg1); \
1811 __asm__ __volatile__ ( \
1812 "syscall\n\t" \
1813 : "=a" (res) \
1814 : "0" (nr), "r" (r1), "r" (r2), "r" (r3), "r" (r4), "r" (r5) \
1815 : "cc", "r11", "cx", "memory"); \
1816 errno = -res; \
1817 res; \
1818 })
1819
1820#endif
1821
1822#ifdef ev_syscall
1823 #define ev_syscall0(nr) ev_syscall (nr, 0, 0, 0, 0, 0, 0, 0)
1824 #define ev_syscall1(nr,arg1) ev_syscall (nr, 1, arg1, 0, 0, 0, 0, 0)
1825 #define ev_syscall2(nr,arg1,arg2) ev_syscall (nr, 2, arg1, arg2, 0, 0, 0, 0)
1826 #define ev_syscall3(nr,arg1,arg2,arg3) ev_syscall (nr, 3, arg1, arg2, arg3, 0, 0, 0)
1827 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) ev_syscall (nr, 3, arg1, arg2, arg3, arg4, 0, 0)
1828 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) ev_syscall (nr, 5, arg1, arg2, arg3, arg4, arg5, 0)
1829 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) ev_syscall (nr, 6, arg1, arg2, arg3, arg4, arg5,arg6)
1830#else
1831 #define ev_syscall0(nr) syscall (nr)
1832 #define ev_syscall1(nr,arg1) syscall (nr, arg1)
1833 #define ev_syscall2(nr,arg1,arg2) syscall (nr, arg1, arg2)
1834 #define ev_syscall3(nr,arg1,arg2,arg3) syscall (nr, arg1, arg2, arg3)
1835 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) syscall (nr, arg1, arg2, arg3, arg4)
1836 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) syscall (nr, arg1, arg2, arg3, arg4, arg5)
1837 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) syscall (nr, arg1, arg2, arg3, arg4, arg5,arg6)
1838#endif
1839
1840#endif
1841
1842/*****************************************************************************/
1843
396#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1844#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
1845
1846#if EV_MINPRI == EV_MAXPRI
1847# define ABSPRI(w) (((W)w), 0)
1848#else
397#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1849# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
1850#endif
398 1851
399#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1852#define EMPTY /* required for microsofts broken pseudo-c compiler */
400#define EMPTY2(a,b) /* used to suppress some warnings */
401 1853
402typedef ev_watcher *W; 1854typedef ev_watcher *W;
403typedef ev_watcher_list *WL; 1855typedef ev_watcher_list *WL;
404typedef ev_watcher_time *WT; 1856typedef ev_watcher_time *WT;
405 1857
406#define ev_active(w) ((W)(w))->active 1858#define ev_active(w) ((W)(w))->active
407#define ev_at(w) ((WT)(w))->at 1859#define ev_at(w) ((WT)(w))->at
408 1860
409#if EV_USE_REALTIME 1861#if EV_USE_REALTIME
410/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 1862/* sig_atomic_t is used to avoid per-thread variables or locking but still */
411/* giving it a reasonably high chance of working on typical architetcures */ 1863/* giving it a reasonably high chance of working on typical architectures */
412static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 1864static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
413#endif 1865#endif
414 1866
415#if EV_USE_MONOTONIC 1867#if EV_USE_MONOTONIC
416static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 1868static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
417#endif 1869#endif
418 1870
1871#ifndef EV_FD_TO_WIN32_HANDLE
1872# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
1873#endif
1874#ifndef EV_WIN32_HANDLE_TO_FD
1875# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
1876#endif
1877#ifndef EV_WIN32_CLOSE_FD
1878# define EV_WIN32_CLOSE_FD(fd) close (fd)
1879#endif
1880
419#ifdef _WIN32 1881#ifdef _WIN32
420# include "ev_win32.c" 1882# include "ev_win32.c"
421#endif 1883#endif
422 1884
423/*****************************************************************************/ 1885/*****************************************************************************/
424 1886
1887#if EV_USE_LINUXAIO
1888# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
1889#endif
1890
1891/* define a suitable floor function (only used by periodics atm) */
1892
1893#if EV_USE_FLOOR
1894# include <math.h>
1895# define ev_floor(v) floor (v)
1896#else
1897
1898#include <float.h>
1899
1900/* a floor() replacement function, should be independent of ev_tstamp type */
1901ecb_noinline
1902static ev_tstamp
1903ev_floor (ev_tstamp v)
1904{
1905 /* the choice of shift factor is not terribly important */
1906#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1907 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1908#else
1909 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1910#endif
1911
1912 /* special treatment for negative arguments */
1913 if (ecb_expect_false (v < 0.))
1914 {
1915 ev_tstamp f = -ev_floor (-v);
1916
1917 return f - (f == v ? 0 : 1);
1918 }
1919
1920 /* argument too large for an unsigned long? then reduce it */
1921 if (ecb_expect_false (v >= shift))
1922 {
1923 ev_tstamp f;
1924
1925 if (v == v - 1.)
1926 return v; /* very large numbers are assumed to be integer */
1927
1928 f = shift * ev_floor (v * (1. / shift));
1929 return f + ev_floor (v - f);
1930 }
1931
1932 /* fits into an unsigned long */
1933 return (unsigned long)v;
1934}
1935
1936#endif
1937
1938/*****************************************************************************/
1939
1940#ifdef __linux
1941# include <sys/utsname.h>
1942#endif
1943
1944ecb_noinline ecb_cold
1945static unsigned int
1946ev_linux_version (void)
1947{
1948#ifdef __linux
1949 unsigned int v = 0;
1950 struct utsname buf;
1951 int i;
1952 char *p = buf.release;
1953
1954 if (uname (&buf))
1955 return 0;
1956
1957 for (i = 3+1; --i; )
1958 {
1959 unsigned int c = 0;
1960
1961 for (;;)
1962 {
1963 if (*p >= '0' && *p <= '9')
1964 c = c * 10 + *p++ - '0';
1965 else
1966 {
1967 p += *p == '.';
1968 break;
1969 }
1970 }
1971
1972 v = (v << 8) | c;
1973 }
1974
1975 return v;
1976#else
1977 return 0;
1978#endif
1979}
1980
1981/*****************************************************************************/
1982
1983#if EV_AVOID_STDIO
1984ecb_noinline ecb_cold
1985static void
1986ev_printerr (const char *msg)
1987{
1988 write (STDERR_FILENO, msg, strlen (msg));
1989}
1990#endif
1991
425static void (*syserr_cb)(const char *msg); 1992static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
426 1993
1994ecb_cold
427void 1995void
428ev_set_syserr_cb (void (*cb)(const char *msg)) 1996ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
429{ 1997{
430 syserr_cb = cb; 1998 syserr_cb = cb;
431} 1999}
432 2000
433static void noinline 2001ecb_noinline ecb_cold
2002static void
434ev_syserr (const char *msg) 2003ev_syserr (const char *msg)
435{ 2004{
436 if (!msg) 2005 if (!msg)
437 msg = "(libev) system error"; 2006 msg = "(libev) system error";
438 2007
439 if (syserr_cb) 2008 if (syserr_cb)
440 syserr_cb (msg); 2009 syserr_cb (msg);
441 else 2010 else
442 { 2011 {
2012#if EV_AVOID_STDIO
2013 ev_printerr (msg);
2014 ev_printerr (": ");
2015 ev_printerr (strerror (errno));
2016 ev_printerr ("\n");
2017#else
443 perror (msg); 2018 perror (msg);
2019#endif
444 abort (); 2020 abort ();
445 } 2021 }
446} 2022}
447 2023
448static void * 2024static void *
449ev_realloc_emul (void *ptr, long size) 2025ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
450{ 2026{
451 /* some systems, notably openbsd and darwin, fail to properly 2027 /* some systems, notably openbsd and darwin, fail to properly
452 * implement realloc (x, 0) (as required by both ansi c-98 and 2028 * implement realloc (x, 0) (as required by both ansi c-89 and
453 * the single unix specification, so work around them here. 2029 * the single unix specification, so work around them here.
2030 * recently, also (at least) fedora and debian started breaking it,
2031 * despite documenting it otherwise.
454 */ 2032 */
455 2033
456 if (size) 2034 if (size)
457 return realloc (ptr, size); 2035 return realloc (ptr, size);
458 2036
459 free (ptr); 2037 free (ptr);
460 return 0; 2038 return 0;
461} 2039}
462 2040
463static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 2041static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
464 2042
2043ecb_cold
465void 2044void
466ev_set_allocator (void *(*cb)(void *ptr, long size)) 2045ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
467{ 2046{
468 alloc = cb; 2047 alloc = cb;
469} 2048}
470 2049
471inline_speed void * 2050inline_speed void *
… …
473{ 2052{
474 ptr = alloc (ptr, size); 2053 ptr = alloc (ptr, size);
475 2054
476 if (!ptr && size) 2055 if (!ptr && size)
477 { 2056 {
2057#if EV_AVOID_STDIO
2058 ev_printerr ("(libev) memory allocation failed, aborting.\n");
2059#else
478 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 2060 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
2061#endif
479 abort (); 2062 abort ();
480 } 2063 }
481 2064
482 return ptr; 2065 return ptr;
483} 2066}
… …
485#define ev_malloc(size) ev_realloc (0, (size)) 2068#define ev_malloc(size) ev_realloc (0, (size))
486#define ev_free(ptr) ev_realloc ((ptr), 0) 2069#define ev_free(ptr) ev_realloc ((ptr), 0)
487 2070
488/*****************************************************************************/ 2071/*****************************************************************************/
489 2072
2073/* set in reify when reification needed */
2074#define EV_ANFD_REIFY 1
2075
490/* file descriptor info structure */ 2076/* file descriptor info structure */
491typedef struct 2077typedef struct
492{ 2078{
493 WL head; 2079 WL head;
494 unsigned char events; /* the events watched for */ 2080 unsigned char events; /* the events watched for */
495 unsigned char reify; /* flag set when this ANFD needs reification */ 2081 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
496 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 2082 unsigned char emask; /* some backends store the actual kernel mask in here */
497 unsigned char unused; 2083 unsigned char eflags; /* flags field for use by backends */
498#if EV_USE_EPOLL 2084#if EV_USE_EPOLL
499 unsigned int egen; /* generation counter to counter epoll bugs */ 2085 unsigned int egen; /* generation counter to counter epoll bugs */
500#endif 2086#endif
501#if EV_SELECT_IS_WINSOCKET 2087#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
502 SOCKET handle; 2088 SOCKET handle;
2089#endif
2090#if EV_USE_IOCP
2091 OVERLAPPED or, ow;
503#endif 2092#endif
504} ANFD; 2093} ANFD;
505 2094
506/* stores the pending event set for a given watcher */ 2095/* stores the pending event set for a given watcher */
507typedef struct 2096typedef struct
… …
549 #undef VAR 2138 #undef VAR
550 }; 2139 };
551 #include "ev_wrap.h" 2140 #include "ev_wrap.h"
552 2141
553 static struct ev_loop default_loop_struct; 2142 static struct ev_loop default_loop_struct;
554 struct ev_loop *ev_default_loop_ptr; 2143 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
555 2144
556#else 2145#else
557 2146
558 ev_tstamp ev_rt_now; 2147 EV_API_DECL ev_tstamp ev_rt_now = EV_TS_CONST (0.); /* needs to be initialised to make it a definition despite extern */
559 #define VAR(name,decl) static decl; 2148 #define VAR(name,decl) static decl;
560 #include "ev_vars.h" 2149 #include "ev_vars.h"
561 #undef VAR 2150 #undef VAR
562 2151
563 static int ev_default_loop_ptr; 2152 static int ev_default_loop_ptr;
564 2153
565#endif 2154#endif
566 2155
2156#if EV_FEATURE_API
2157# define EV_RELEASE_CB if (ecb_expect_false (release_cb)) release_cb (EV_A)
2158# define EV_ACQUIRE_CB if (ecb_expect_false (acquire_cb)) acquire_cb (EV_A)
2159# define EV_INVOKE_PENDING invoke_cb (EV_A)
2160#else
2161# define EV_RELEASE_CB (void)0
2162# define EV_ACQUIRE_CB (void)0
2163# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
2164#endif
2165
2166#define EVBREAK_RECURSE 0x80
2167
567/*****************************************************************************/ 2168/*****************************************************************************/
568 2169
569#ifndef EV_HAVE_EV_TIME 2170#ifndef EV_HAVE_EV_TIME
570ev_tstamp 2171ev_tstamp
571ev_time (void) 2172ev_time (void) EV_NOEXCEPT
572{ 2173{
573#if EV_USE_REALTIME 2174#if EV_USE_REALTIME
574 if (expect_true (have_realtime)) 2175 if (ecb_expect_true (have_realtime))
575 { 2176 {
576 struct timespec ts; 2177 struct timespec ts;
577 clock_gettime (CLOCK_REALTIME, &ts); 2178 clock_gettime (CLOCK_REALTIME, &ts);
578 return ts.tv_sec + ts.tv_nsec * 1e-9; 2179 return EV_TS_GET (ts);
579 } 2180 }
580#endif 2181#endif
581 2182
2183 {
582 struct timeval tv; 2184 struct timeval tv;
583 gettimeofday (&tv, 0); 2185 gettimeofday (&tv, 0);
584 return tv.tv_sec + tv.tv_usec * 1e-6; 2186 return EV_TV_GET (tv);
2187 }
585} 2188}
586#endif 2189#endif
587 2190
588inline_size ev_tstamp 2191inline_size ev_tstamp
589get_clock (void) 2192get_clock (void)
590{ 2193{
591#if EV_USE_MONOTONIC 2194#if EV_USE_MONOTONIC
592 if (expect_true (have_monotonic)) 2195 if (ecb_expect_true (have_monotonic))
593 { 2196 {
594 struct timespec ts; 2197 struct timespec ts;
595 clock_gettime (CLOCK_MONOTONIC, &ts); 2198 clock_gettime (CLOCK_MONOTONIC, &ts);
596 return ts.tv_sec + ts.tv_nsec * 1e-9; 2199 return EV_TS_GET (ts);
597 } 2200 }
598#endif 2201#endif
599 2202
600 return ev_time (); 2203 return ev_time ();
601} 2204}
602 2205
603#if EV_MULTIPLICITY 2206#if EV_MULTIPLICITY
604ev_tstamp 2207ev_tstamp
605ev_now (EV_P) 2208ev_now (EV_P) EV_NOEXCEPT
606{ 2209{
607 return ev_rt_now; 2210 return ev_rt_now;
608} 2211}
609#endif 2212#endif
610 2213
611void 2214void
612ev_sleep (ev_tstamp delay) 2215ev_sleep (ev_tstamp delay) EV_NOEXCEPT
613{ 2216{
614 if (delay > 0.) 2217 if (delay > EV_TS_CONST (0.))
615 { 2218 {
616#if EV_USE_NANOSLEEP 2219#if EV_USE_NANOSLEEP
617 struct timespec ts; 2220 struct timespec ts;
618 2221
619 ts.tv_sec = (time_t)delay; 2222 EV_TS_SET (ts, delay);
620 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
621
622 nanosleep (&ts, 0); 2223 nanosleep (&ts, 0);
623#elif defined(_WIN32) 2224#elif defined _WIN32
2225 /* maybe this should round up, as ms is very low resolution */
2226 /* compared to select (µs) or nanosleep (ns) */
624 Sleep ((unsigned long)(delay * 1e3)); 2227 Sleep ((unsigned long)(EV_TS_TO_MSEC (delay)));
625#else 2228#else
626 struct timeval tv; 2229 struct timeval tv;
627 2230
628 tv.tv_sec = (time_t)delay;
629 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
630
631 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 2231 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
632 /* somehting nto guaranteed by newer posix versions, but guaranteed */ 2232 /* something not guaranteed by newer posix versions, but guaranteed */
633 /* by older ones */ 2233 /* by older ones */
2234 EV_TV_SET (tv, delay);
634 select (0, 0, 0, 0, &tv); 2235 select (0, 0, 0, 0, &tv);
635#endif 2236#endif
636 } 2237 }
637} 2238}
638 2239
639/*****************************************************************************/ 2240/*****************************************************************************/
640 2241
641#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 2242#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
642 2243
643/* find a suitable new size for the given array, */ 2244/* find a suitable new size for the given array, */
644/* hopefully by rounding to a ncie-to-malloc size */ 2245/* hopefully by rounding to a nice-to-malloc size */
645inline_size int 2246inline_size int
646array_nextsize (int elem, int cur, int cnt) 2247array_nextsize (int elem, int cur, int cnt)
647{ 2248{
648 int ncur = cur + 1; 2249 int ncur = cur + 1;
649 2250
650 do 2251 do
651 ncur <<= 1; 2252 ncur <<= 1;
652 while (cnt > ncur); 2253 while (cnt > ncur);
653 2254
654 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 2255 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
655 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 2256 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
656 { 2257 {
657 ncur *= elem; 2258 ncur *= elem;
658 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 2259 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
659 ncur = ncur - sizeof (void *) * 4; 2260 ncur = ncur - sizeof (void *) * 4;
… …
661 } 2262 }
662 2263
663 return ncur; 2264 return ncur;
664} 2265}
665 2266
666static noinline void * 2267ecb_noinline ecb_cold
2268static void *
667array_realloc (int elem, void *base, int *cur, int cnt) 2269array_realloc (int elem, void *base, int *cur, int cnt)
668{ 2270{
669 *cur = array_nextsize (elem, *cur, cnt); 2271 *cur = array_nextsize (elem, *cur, cnt);
670 return ev_realloc (base, elem * *cur); 2272 return ev_realloc (base, elem * *cur);
671} 2273}
672 2274
2275#define array_needsize_noinit(base,offset,count)
2276
673#define array_init_zero(base,count) \ 2277#define array_needsize_zerofill(base,offset,count) \
674 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 2278 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
675 2279
676#define array_needsize(type,base,cur,cnt,init) \ 2280#define array_needsize(type,base,cur,cnt,init) \
677 if (expect_false ((cnt) > (cur))) \ 2281 if (ecb_expect_false ((cnt) > (cur))) \
678 { \ 2282 { \
679 int ocur_ = (cur); \ 2283 ecb_unused int ocur_ = (cur); \
680 (base) = (type *)array_realloc \ 2284 (base) = (type *)array_realloc \
681 (sizeof (type), (base), &(cur), (cnt)); \ 2285 (sizeof (type), (base), &(cur), (cnt)); \
682 init ((base) + (ocur_), (cur) - ocur_); \ 2286 init ((base), ocur_, ((cur) - ocur_)); \
683 } 2287 }
684 2288
685#if 0 2289#if 0
686#define array_slim(type,stem) \ 2290#define array_slim(type,stem) \
687 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2291 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
… …
696 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 2300 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
697 2301
698/*****************************************************************************/ 2302/*****************************************************************************/
699 2303
700/* dummy callback for pending events */ 2304/* dummy callback for pending events */
701static void noinline 2305ecb_noinline
2306static void
702pendingcb (EV_P_ ev_prepare *w, int revents) 2307pendingcb (EV_P_ ev_prepare *w, int revents)
703{ 2308{
704} 2309}
705 2310
706void noinline 2311ecb_noinline
2312void
707ev_feed_event (EV_P_ void *w, int revents) 2313ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
708{ 2314{
709 W w_ = (W)w; 2315 W w_ = (W)w;
710 int pri = ABSPRI (w_); 2316 int pri = ABSPRI (w_);
711 2317
712 if (expect_false (w_->pending)) 2318 if (ecb_expect_false (w_->pending))
713 pendings [pri][w_->pending - 1].events |= revents; 2319 pendings [pri][w_->pending - 1].events |= revents;
714 else 2320 else
715 { 2321 {
716 w_->pending = ++pendingcnt [pri]; 2322 w_->pending = ++pendingcnt [pri];
717 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2323 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
718 pendings [pri][w_->pending - 1].w = w_; 2324 pendings [pri][w_->pending - 1].w = w_;
719 pendings [pri][w_->pending - 1].events = revents; 2325 pendings [pri][w_->pending - 1].events = revents;
720 } 2326 }
2327
2328 pendingpri = NUMPRI - 1;
721} 2329}
722 2330
723inline_speed void 2331inline_speed void
724feed_reverse (EV_P_ W w) 2332feed_reverse (EV_P_ W w)
725{ 2333{
726 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2334 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
727 rfeeds [rfeedcnt++] = w; 2335 rfeeds [rfeedcnt++] = w;
728} 2336}
729 2337
730inline_size void 2338inline_size void
731feed_reverse_done (EV_P_ int revents) 2339feed_reverse_done (EV_P_ int revents)
… …
745} 2353}
746 2354
747/*****************************************************************************/ 2355/*****************************************************************************/
748 2356
749inline_speed void 2357inline_speed void
750fd_event (EV_P_ int fd, int revents) 2358fd_event_nocheck (EV_P_ int fd, int revents)
751{ 2359{
752 ANFD *anfd = anfds + fd; 2360 ANFD *anfd = anfds + fd;
753 ev_io *w; 2361 ev_io *w;
754 2362
755 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2363 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
759 if (ev) 2367 if (ev)
760 ev_feed_event (EV_A_ (W)w, ev); 2368 ev_feed_event (EV_A_ (W)w, ev);
761 } 2369 }
762} 2370}
763 2371
2372/* do not submit kernel events for fds that have reify set */
2373/* because that means they changed while we were polling for new events */
2374inline_speed void
2375fd_event (EV_P_ int fd, int revents)
2376{
2377 ANFD *anfd = anfds + fd;
2378
2379 if (ecb_expect_true (!anfd->reify))
2380 fd_event_nocheck (EV_A_ fd, revents);
2381}
2382
764void 2383void
765ev_feed_fd_event (EV_P_ int fd, int revents) 2384ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
766{ 2385{
767 if (fd >= 0 && fd < anfdmax) 2386 if (fd >= 0 && fd < anfdmax)
768 fd_event (EV_A_ fd, revents); 2387 fd_event_nocheck (EV_A_ fd, revents);
769} 2388}
770 2389
771/* make sure the external fd watch events are in-sync */ 2390/* make sure the external fd watch events are in-sync */
772/* with the kernel/libev internal state */ 2391/* with the kernel/libev internal state */
773inline_size void 2392inline_size void
774fd_reify (EV_P) 2393fd_reify (EV_P)
775{ 2394{
776 int i; 2395 int i;
777 2396
2397 /* most backends do not modify the fdchanges list in backend_modfiy.
2398 * except io_uring, which has fixed-size buffers which might force us
2399 * to handle events in backend_modify, causing fdchanges to be amended,
2400 * which could result in an endless loop.
2401 * to avoid this, we do not dynamically handle fds that were added
2402 * during fd_reify. that means that for those backends, fdchangecnt
2403 * might be non-zero during poll, which must cause them to not block.
2404 * to not put too much of a burden on other backends, this detail
2405 * needs to be handled in the backend.
2406 */
2407 int changecnt = fdchangecnt;
2408
2409#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
778 for (i = 0; i < fdchangecnt; ++i) 2410 for (i = 0; i < changecnt; ++i)
2411 {
2412 int fd = fdchanges [i];
2413 ANFD *anfd = anfds + fd;
2414
2415 if (anfd->reify & EV__IOFDSET && anfd->head)
2416 {
2417 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
2418
2419 if (handle != anfd->handle)
2420 {
2421 unsigned long arg;
2422
2423 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
2424
2425 /* handle changed, but fd didn't - we need to do it in two steps */
2426 backend_modify (EV_A_ fd, anfd->events, 0);
2427 anfd->events = 0;
2428 anfd->handle = handle;
2429 }
2430 }
2431 }
2432#endif
2433
2434 for (i = 0; i < changecnt; ++i)
779 { 2435 {
780 int fd = fdchanges [i]; 2436 int fd = fdchanges [i];
781 ANFD *anfd = anfds + fd; 2437 ANFD *anfd = anfds + fd;
782 ev_io *w; 2438 ev_io *w;
783 2439
784 unsigned char events = 0; 2440 unsigned char o_events = anfd->events;
2441 unsigned char o_reify = anfd->reify;
785 2442
786 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2443 anfd->reify = 0;
787 events |= (unsigned char)w->events;
788 2444
789#if EV_SELECT_IS_WINSOCKET 2445 /*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
790 if (events)
791 { 2446 {
792 unsigned long arg; 2447 anfd->events = 0;
793 #ifdef EV_FD_TO_WIN32_HANDLE 2448
794 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 2449 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
795 #else 2450 anfd->events |= (unsigned char)w->events;
796 anfd->handle = _get_osfhandle (fd); 2451
797 #endif 2452 if (o_events != anfd->events)
798 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 2453 o_reify = EV__IOFDSET; /* actually |= */
799 } 2454 }
800#endif
801 2455
802 { 2456 if (o_reify & EV__IOFDSET)
803 unsigned char o_events = anfd->events;
804 unsigned char o_reify = anfd->reify;
805
806 anfd->reify = 0;
807 anfd->events = events;
808
809 if (o_events != events || o_reify & EV__IOFDSET)
810 backend_modify (EV_A_ fd, o_events, events); 2457 backend_modify (EV_A_ fd, o_events, anfd->events);
811 } 2458 }
812 }
813 2459
2460 /* normally, fdchangecnt hasn't changed. if it has, then new fds have been added.
2461 * this is a rare case (see beginning comment in this function), so we copy them to the
2462 * front and hope the backend handles this case.
2463 */
2464 if (ecb_expect_false (fdchangecnt != changecnt))
2465 memmove (fdchanges, fdchanges + changecnt, (fdchangecnt - changecnt) * sizeof (*fdchanges));
2466
814 fdchangecnt = 0; 2467 fdchangecnt -= changecnt;
815} 2468}
816 2469
817/* something about the given fd changed */ 2470/* something about the given fd changed */
818inline_size void 2471inline_size
2472void
819fd_change (EV_P_ int fd, int flags) 2473fd_change (EV_P_ int fd, int flags)
820{ 2474{
821 unsigned char reify = anfds [fd].reify; 2475 unsigned char reify = anfds [fd].reify;
822 anfds [fd].reify |= flags; 2476 anfds [fd].reify = reify | flags;
823 2477
824 if (expect_true (!reify)) 2478 if (ecb_expect_true (!reify))
825 { 2479 {
826 ++fdchangecnt; 2480 ++fdchangecnt;
827 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2481 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
828 fdchanges [fdchangecnt - 1] = fd; 2482 fdchanges [fdchangecnt - 1] = fd;
829 } 2483 }
830} 2484}
831 2485
832/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2486/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
833inline_speed void 2487inline_speed ecb_cold void
834fd_kill (EV_P_ int fd) 2488fd_kill (EV_P_ int fd)
835{ 2489{
836 ev_io *w; 2490 ev_io *w;
837 2491
838 while ((w = (ev_io *)anfds [fd].head)) 2492 while ((w = (ev_io *)anfds [fd].head))
… …
840 ev_io_stop (EV_A_ w); 2494 ev_io_stop (EV_A_ w);
841 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2495 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
842 } 2496 }
843} 2497}
844 2498
845/* check whether the given fd is atcually valid, for error recovery */ 2499/* check whether the given fd is actually valid, for error recovery */
846inline_size int 2500inline_size ecb_cold int
847fd_valid (int fd) 2501fd_valid (int fd)
848{ 2502{
849#ifdef _WIN32 2503#ifdef _WIN32
850 return _get_osfhandle (fd) != -1; 2504 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
851#else 2505#else
852 return fcntl (fd, F_GETFD) != -1; 2506 return fcntl (fd, F_GETFD) != -1;
853#endif 2507#endif
854} 2508}
855 2509
856/* called on EBADF to verify fds */ 2510/* called on EBADF to verify fds */
857static void noinline 2511ecb_noinline ecb_cold
2512static void
858fd_ebadf (EV_P) 2513fd_ebadf (EV_P)
859{ 2514{
860 int fd; 2515 int fd;
861 2516
862 for (fd = 0; fd < anfdmax; ++fd) 2517 for (fd = 0; fd < anfdmax; ++fd)
… …
864 if (!fd_valid (fd) && errno == EBADF) 2519 if (!fd_valid (fd) && errno == EBADF)
865 fd_kill (EV_A_ fd); 2520 fd_kill (EV_A_ fd);
866} 2521}
867 2522
868/* called on ENOMEM in select/poll to kill some fds and retry */ 2523/* called on ENOMEM in select/poll to kill some fds and retry */
869static void noinline 2524ecb_noinline ecb_cold
2525static void
870fd_enomem (EV_P) 2526fd_enomem (EV_P)
871{ 2527{
872 int fd; 2528 int fd;
873 2529
874 for (fd = anfdmax; fd--; ) 2530 for (fd = anfdmax; fd--; )
875 if (anfds [fd].events) 2531 if (anfds [fd].events)
876 { 2532 {
877 fd_kill (EV_A_ fd); 2533 fd_kill (EV_A_ fd);
878 return; 2534 break;
879 } 2535 }
880} 2536}
881 2537
882/* usually called after fork if backend needs to re-arm all fds from scratch */ 2538/* usually called after fork if backend needs to re-arm all fds from scratch */
883static void noinline 2539ecb_noinline
2540static void
884fd_rearm_all (EV_P) 2541fd_rearm_all (EV_P)
885{ 2542{
886 int fd; 2543 int fd;
887 2544
888 for (fd = 0; fd < anfdmax; ++fd) 2545 for (fd = 0; fd < anfdmax; ++fd)
889 if (anfds [fd].events) 2546 if (anfds [fd].events)
890 { 2547 {
891 anfds [fd].events = 0; 2548 anfds [fd].events = 0;
892 anfds [fd].emask = 0; 2549 anfds [fd].emask = 0;
893 fd_change (EV_A_ fd, EV__IOFDSET | 1); 2550 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
894 } 2551 }
895} 2552}
896 2553
2554/* used to prepare libev internal fd's */
2555/* this is not fork-safe */
2556inline_speed void
2557fd_intern (int fd)
2558{
2559#ifdef _WIN32
2560 unsigned long arg = 1;
2561 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
2562#else
2563 fcntl (fd, F_SETFD, FD_CLOEXEC);
2564 fcntl (fd, F_SETFL, O_NONBLOCK);
2565#endif
2566}
2567
897/*****************************************************************************/ 2568/*****************************************************************************/
898 2569
899/* 2570/*
900 * the heap functions want a real array index. array index 0 uis guaranteed to not 2571 * the heap functions want a real array index. array index 0 is guaranteed to not
901 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 2572 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
902 * the branching factor of the d-tree. 2573 * the branching factor of the d-tree.
903 */ 2574 */
904 2575
905/* 2576/*
… …
927 ev_tstamp minat; 2598 ev_tstamp minat;
928 ANHE *minpos; 2599 ANHE *minpos;
929 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; 2600 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
930 2601
931 /* find minimum child */ 2602 /* find minimum child */
932 if (expect_true (pos + DHEAP - 1 < E)) 2603 if (ecb_expect_true (pos + DHEAP - 1 < E))
933 { 2604 {
934 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2605 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
935 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2606 if ( minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
936 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2607 if ( minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
937 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2608 if ( minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
938 } 2609 }
939 else if (pos < E) 2610 else if (pos < E)
940 { 2611 {
941 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2612 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
942 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2613 if (pos + 1 < E && minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
943 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2614 if (pos + 2 < E && minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
944 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2615 if (pos + 3 < E && minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
945 } 2616 }
946 else 2617 else
947 break; 2618 break;
948 2619
949 if (ANHE_at (he) <= minat) 2620 if (ANHE_at (he) <= minat)
… …
957 2628
958 heap [k] = he; 2629 heap [k] = he;
959 ev_active (ANHE_w (he)) = k; 2630 ev_active (ANHE_w (he)) = k;
960} 2631}
961 2632
962#else /* 4HEAP */ 2633#else /* not 4HEAP */
963 2634
964#define HEAP0 1 2635#define HEAP0 1
965#define HPARENT(k) ((k) >> 1) 2636#define HPARENT(k) ((k) >> 1)
966#define UPHEAP_DONE(p,k) (!(p)) 2637#define UPHEAP_DONE(p,k) (!(p))
967 2638
… …
973 2644
974 for (;;) 2645 for (;;)
975 { 2646 {
976 int c = k << 1; 2647 int c = k << 1;
977 2648
978 if (c > N + HEAP0 - 1) 2649 if (c >= N + HEAP0)
979 break; 2650 break;
980 2651
981 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 2652 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
982 ? 1 : 0; 2653 ? 1 : 0;
983 2654
… …
1019 2690
1020/* move an element suitably so it is in a correct place */ 2691/* move an element suitably so it is in a correct place */
1021inline_size void 2692inline_size void
1022adjustheap (ANHE *heap, int N, int k) 2693adjustheap (ANHE *heap, int N, int k)
1023{ 2694{
1024 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 2695 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1025 upheap (heap, k); 2696 upheap (heap, k);
1026 else 2697 else
1027 downheap (heap, N, k); 2698 downheap (heap, N, k);
1028} 2699}
1029 2700
… …
1039 upheap (heap, i + HEAP0); 2710 upheap (heap, i + HEAP0);
1040} 2711}
1041 2712
1042/*****************************************************************************/ 2713/*****************************************************************************/
1043 2714
1044/* associate signal watchers to a signal signal */ 2715/* associate signal watchers to a signal */
1045typedef struct 2716typedef struct
1046{ 2717{
2718 EV_ATOMIC_T pending;
2719#if EV_MULTIPLICITY
2720 EV_P;
2721#endif
1047 WL head; 2722 WL head;
1048 EV_ATOMIC_T gotsig;
1049} ANSIG; 2723} ANSIG;
1050 2724
1051static ANSIG *signals; 2725static ANSIG signals [EV_NSIG - 1];
1052static int signalmax;
1053
1054static EV_ATOMIC_T gotsig;
1055 2726
1056/*****************************************************************************/ 2727/*****************************************************************************/
1057 2728
1058/* used to prepare libev internal fd's */ 2729#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1059/* this is not fork-safe */ 2730
2731ecb_noinline ecb_cold
2732static void
2733evpipe_init (EV_P)
2734{
2735 if (!ev_is_active (&pipe_w))
2736 {
2737 int fds [2];
2738
2739# if EV_USE_EVENTFD
2740 fds [0] = -1;
2741 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
2742 if (fds [1] < 0 && errno == EINVAL)
2743 fds [1] = eventfd (0, 0);
2744
2745 if (fds [1] < 0)
2746# endif
2747 {
2748 while (pipe (fds))
2749 ev_syserr ("(libev) error creating signal/async pipe");
2750
2751 fd_intern (fds [0]);
2752 }
2753
2754 evpipe [0] = fds [0];
2755
2756 if (evpipe [1] < 0)
2757 evpipe [1] = fds [1]; /* first call, set write fd */
2758 else
2759 {
2760 /* on subsequent calls, do not change evpipe [1] */
2761 /* so that evpipe_write can always rely on its value. */
2762 /* this branch does not do anything sensible on windows, */
2763 /* so must not be executed on windows */
2764
2765 dup2 (fds [1], evpipe [1]);
2766 close (fds [1]);
2767 }
2768
2769 fd_intern (evpipe [1]);
2770
2771 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2772 ev_io_start (EV_A_ &pipe_w);
2773 ev_unref (EV_A); /* watcher should not keep loop alive */
2774 }
2775}
2776
1060inline_speed void 2777inline_speed void
1061fd_intern (int fd) 2778evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1062{ 2779{
1063#ifdef _WIN32 2780 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1064 unsigned long arg = 1;
1065 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1066#else
1067 fcntl (fd, F_SETFD, FD_CLOEXEC);
1068 fcntl (fd, F_SETFL, O_NONBLOCK);
1069#endif
1070}
1071 2781
1072static void noinline 2782 if (ecb_expect_true (*flag))
1073evpipe_init (EV_P) 2783 return;
1074{ 2784
1075 if (!ev_is_active (&pipe_w)) 2785 *flag = 1;
2786 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2787
2788 pipe_write_skipped = 1;
2789
2790 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2791
2792 if (pipe_write_wanted)
1076 { 2793 {
2794 int old_errno;
2795
2796 pipe_write_skipped = 0;
2797 ECB_MEMORY_FENCE_RELEASE;
2798
2799 old_errno = errno; /* save errno because write will clobber it */
2800
1077#if EV_USE_EVENTFD 2801#if EV_USE_EVENTFD
1078 if ((evfd = eventfd (0, 0)) >= 0) 2802 if (evpipe [0] < 0)
1079 { 2803 {
1080 evpipe [0] = -1; 2804 uint64_t counter = 1;
1081 fd_intern (evfd); 2805 write (evpipe [1], &counter, sizeof (uint64_t));
1082 ev_io_set (&pipe_w, evfd, EV_READ);
1083 } 2806 }
1084 else 2807 else
1085#endif 2808#endif
1086 { 2809 {
1087 while (pipe (evpipe)) 2810#ifdef _WIN32
1088 ev_syserr ("(libev) error creating signal/async pipe"); 2811 WSABUF buf;
1089 2812 DWORD sent;
1090 fd_intern (evpipe [0]); 2813 buf.buf = (char *)&buf;
1091 fd_intern (evpipe [1]); 2814 buf.len = 1;
1092 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2815 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2816#else
2817 write (evpipe [1], &(evpipe [1]), 1);
2818#endif
1093 } 2819 }
1094
1095 ev_io_start (EV_A_ &pipe_w);
1096 ev_unref (EV_A); /* watcher should not keep loop alive */
1097 }
1098}
1099
1100inline_size void
1101evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1102{
1103 if (!*flag)
1104 {
1105 int old_errno = errno; /* save errno because write might clobber it */
1106
1107 *flag = 1;
1108
1109#if EV_USE_EVENTFD
1110 if (evfd >= 0)
1111 {
1112 uint64_t counter = 1;
1113 write (evfd, &counter, sizeof (uint64_t));
1114 }
1115 else
1116#endif
1117 write (evpipe [1], &old_errno, 1);
1118 2820
1119 errno = old_errno; 2821 errno = old_errno;
1120 } 2822 }
1121} 2823}
1122 2824
1123/* called whenever the libev signal pipe */ 2825/* called whenever the libev signal pipe */
1124/* got some events (signal, async) */ 2826/* got some events (signal, async) */
1125static void 2827static void
1126pipecb (EV_P_ ev_io *iow, int revents) 2828pipecb (EV_P_ ev_io *iow, int revents)
1127{ 2829{
2830 int i;
2831
2832 if (revents & EV_READ)
2833 {
1128#if EV_USE_EVENTFD 2834#if EV_USE_EVENTFD
1129 if (evfd >= 0) 2835 if (evpipe [0] < 0)
1130 { 2836 {
1131 uint64_t counter; 2837 uint64_t counter;
1132 read (evfd, &counter, sizeof (uint64_t)); 2838 read (evpipe [1], &counter, sizeof (uint64_t));
1133 } 2839 }
1134 else 2840 else
1135#endif 2841#endif
1136 { 2842 {
1137 char dummy; 2843 char dummy[4];
2844#ifdef _WIN32
2845 WSABUF buf;
2846 DWORD recvd;
2847 DWORD flags = 0;
2848 buf.buf = dummy;
2849 buf.len = sizeof (dummy);
2850 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2851#else
1138 read (evpipe [0], &dummy, 1); 2852 read (evpipe [0], &dummy, sizeof (dummy));
2853#endif
2854 }
2855 }
2856
2857 pipe_write_skipped = 0;
2858
2859 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2860
2861#if EV_SIGNAL_ENABLE
2862 if (sig_pending)
1139 } 2863 {
2864 sig_pending = 0;
1140 2865
1141 if (gotsig && ev_is_default_loop (EV_A)) 2866 ECB_MEMORY_FENCE;
1142 {
1143 int signum;
1144 gotsig = 0;
1145 2867
1146 for (signum = signalmax; signum--; ) 2868 for (i = EV_NSIG - 1; i--; )
1147 if (signals [signum].gotsig) 2869 if (ecb_expect_false (signals [i].pending))
1148 ev_feed_signal_event (EV_A_ signum + 1); 2870 ev_feed_signal_event (EV_A_ i + 1);
1149 } 2871 }
2872#endif
1150 2873
1151#if EV_ASYNC_ENABLE 2874#if EV_ASYNC_ENABLE
1152 if (gotasync) 2875 if (async_pending)
1153 { 2876 {
1154 int i; 2877 async_pending = 0;
1155 gotasync = 0; 2878
2879 ECB_MEMORY_FENCE;
1156 2880
1157 for (i = asynccnt; i--; ) 2881 for (i = asynccnt; i--; )
1158 if (asyncs [i]->sent) 2882 if (asyncs [i]->sent)
1159 { 2883 {
1160 asyncs [i]->sent = 0; 2884 asyncs [i]->sent = 0;
2885 ECB_MEMORY_FENCE_RELEASE;
1161 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2886 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1162 } 2887 }
1163 } 2888 }
1164#endif 2889#endif
1165} 2890}
1166 2891
1167/*****************************************************************************/ 2892/*****************************************************************************/
1168 2893
2894void
2895ev_feed_signal (int signum) EV_NOEXCEPT
2896{
2897#if EV_MULTIPLICITY
2898 EV_P;
2899 ECB_MEMORY_FENCE_ACQUIRE;
2900 EV_A = signals [signum - 1].loop;
2901
2902 if (!EV_A)
2903 return;
2904#endif
2905
2906 signals [signum - 1].pending = 1;
2907 evpipe_write (EV_A_ &sig_pending);
2908}
2909
1169static void 2910static void
1170ev_sighandler (int signum) 2911ev_sighandler (int signum)
1171{ 2912{
2913#ifdef _WIN32
2914 signal (signum, ev_sighandler);
2915#endif
2916
2917 ev_feed_signal (signum);
2918}
2919
2920ecb_noinline
2921void
2922ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
2923{
2924 WL w;
2925
2926 if (ecb_expect_false (signum <= 0 || signum >= EV_NSIG))
2927 return;
2928
2929 --signum;
2930
1172#if EV_MULTIPLICITY 2931#if EV_MULTIPLICITY
1173 struct ev_loop *loop = &default_loop_struct; 2932 /* it is permissible to try to feed a signal to the wrong loop */
1174#endif 2933 /* or, likely more useful, feeding a signal nobody is waiting for */
1175 2934
1176#if _WIN32 2935 if (ecb_expect_false (signals [signum].loop != EV_A))
1177 signal (signum, ev_sighandler);
1178#endif
1179
1180 signals [signum - 1].gotsig = 1;
1181 evpipe_write (EV_A_ &gotsig);
1182}
1183
1184void noinline
1185ev_feed_signal_event (EV_P_ int signum)
1186{
1187 WL w;
1188
1189#if EV_MULTIPLICITY
1190 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1191#endif
1192
1193 --signum;
1194
1195 if (signum < 0 || signum >= signalmax)
1196 return; 2936 return;
2937#endif
1197 2938
1198 signals [signum].gotsig = 0; 2939 signals [signum].pending = 0;
2940 ECB_MEMORY_FENCE_RELEASE;
1199 2941
1200 for (w = signals [signum].head; w; w = w->next) 2942 for (w = signals [signum].head; w; w = w->next)
1201 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2943 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1202} 2944}
1203 2945
2946#if EV_USE_SIGNALFD
2947static void
2948sigfdcb (EV_P_ ev_io *iow, int revents)
2949{
2950 struct signalfd_siginfo si[2], *sip; /* these structs are big */
2951
2952 for (;;)
2953 {
2954 ssize_t res = read (sigfd, si, sizeof (si));
2955
2956 /* not ISO-C, as res might be -1, but works with SuS */
2957 for (sip = si; (char *)sip < (char *)si + res; ++sip)
2958 ev_feed_signal_event (EV_A_ sip->ssi_signo);
2959
2960 if (res < (ssize_t)sizeof (si))
2961 break;
2962 }
2963}
2964#endif
2965
2966#endif
2967
1204/*****************************************************************************/ 2968/*****************************************************************************/
1205 2969
2970#if EV_CHILD_ENABLE
1206static WL childs [EV_PID_HASHSIZE]; 2971static WL childs [EV_PID_HASHSIZE];
1207
1208#ifndef _WIN32
1209 2972
1210static ev_signal childev; 2973static ev_signal childev;
1211 2974
1212#ifndef WIFCONTINUED 2975#ifndef WIFCONTINUED
1213# define WIFCONTINUED(status) 0 2976# define WIFCONTINUED(status) 0
… …
1218child_reap (EV_P_ int chain, int pid, int status) 2981child_reap (EV_P_ int chain, int pid, int status)
1219{ 2982{
1220 ev_child *w; 2983 ev_child *w;
1221 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2984 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1222 2985
1223 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2986 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1224 { 2987 {
1225 if ((w->pid == pid || !w->pid) 2988 if ((w->pid == pid || !w->pid)
1226 && (!traced || (w->flags & 1))) 2989 && (!traced || (w->flags & 1)))
1227 { 2990 {
1228 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2991 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1253 /* make sure we are called again until all children have been reaped */ 3016 /* make sure we are called again until all children have been reaped */
1254 /* we need to do it this way so that the callback gets called before we continue */ 3017 /* we need to do it this way so that the callback gets called before we continue */
1255 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 3018 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1256 3019
1257 child_reap (EV_A_ pid, pid, status); 3020 child_reap (EV_A_ pid, pid, status);
1258 if (EV_PID_HASHSIZE > 1) 3021 if ((EV_PID_HASHSIZE) > 1)
1259 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 3022 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1260} 3023}
1261 3024
1262#endif 3025#endif
1263 3026
1264/*****************************************************************************/ 3027/*****************************************************************************/
1265 3028
3029#if EV_USE_TIMERFD
3030
3031static void periodics_reschedule (EV_P);
3032
3033static void
3034timerfdcb (EV_P_ ev_io *iow, int revents)
3035{
3036 struct itimerspec its = { 0 };
3037
3038 its.it_value.tv_sec = ev_rt_now + (int)MAX_BLOCKTIME2;
3039 timerfd_settime (timerfd, TFD_TIMER_ABSTIME | TFD_TIMER_CANCEL_ON_SET, &its, 0);
3040
3041 ev_rt_now = ev_time ();
3042 /* periodics_reschedule only needs ev_rt_now */
3043 /* but maybe in the future we want the full treatment. */
3044 /*
3045 now_floor = EV_TS_CONST (0.);
3046 time_update (EV_A_ EV_TSTAMP_HUGE);
3047 */
3048#if EV_PERIODIC_ENABLE
3049 periodics_reschedule (EV_A);
3050#endif
3051}
3052
3053ecb_noinline ecb_cold
3054static void
3055evtimerfd_init (EV_P)
3056{
3057 if (!ev_is_active (&timerfd_w))
3058 {
3059 timerfd = timerfd_create (CLOCK_REALTIME, TFD_NONBLOCK | TFD_CLOEXEC);
3060
3061 if (timerfd >= 0)
3062 {
3063 fd_intern (timerfd); /* just to be sure */
3064
3065 ev_io_init (&timerfd_w, timerfdcb, timerfd, EV_READ);
3066 ev_set_priority (&timerfd_w, EV_MINPRI);
3067 ev_io_start (EV_A_ &timerfd_w);
3068 ev_unref (EV_A); /* watcher should not keep loop alive */
3069
3070 /* (re-) arm timer */
3071 timerfdcb (EV_A_ 0, 0);
3072 }
3073 }
3074}
3075
3076#endif
3077
3078/*****************************************************************************/
3079
3080#if EV_USE_IOCP
3081# include "ev_iocp.c"
3082#endif
1266#if EV_USE_PORT 3083#if EV_USE_PORT
1267# include "ev_port.c" 3084# include "ev_port.c"
1268#endif 3085#endif
1269#if EV_USE_KQUEUE 3086#if EV_USE_KQUEUE
1270# include "ev_kqueue.c" 3087# include "ev_kqueue.c"
1271#endif 3088#endif
1272#if EV_USE_EPOLL 3089#if EV_USE_EPOLL
1273# include "ev_epoll.c" 3090# include "ev_epoll.c"
1274#endif 3091#endif
3092#if EV_USE_LINUXAIO
3093# include "ev_linuxaio.c"
3094#endif
3095#if EV_USE_IOURING
3096# include "ev_iouring.c"
3097#endif
1275#if EV_USE_POLL 3098#if EV_USE_POLL
1276# include "ev_poll.c" 3099# include "ev_poll.c"
1277#endif 3100#endif
1278#if EV_USE_SELECT 3101#if EV_USE_SELECT
1279# include "ev_select.c" 3102# include "ev_select.c"
1280#endif 3103#endif
1281 3104
1282int 3105ecb_cold int
1283ev_version_major (void) 3106ev_version_major (void) EV_NOEXCEPT
1284{ 3107{
1285 return EV_VERSION_MAJOR; 3108 return EV_VERSION_MAJOR;
1286} 3109}
1287 3110
1288int 3111ecb_cold int
1289ev_version_minor (void) 3112ev_version_minor (void) EV_NOEXCEPT
1290{ 3113{
1291 return EV_VERSION_MINOR; 3114 return EV_VERSION_MINOR;
1292} 3115}
1293 3116
1294/* return true if we are running with elevated privileges and should ignore env variables */ 3117/* return true if we are running with elevated privileges and should ignore env variables */
1295int inline_size 3118inline_size ecb_cold int
1296enable_secure (void) 3119enable_secure (void)
1297{ 3120{
1298#ifdef _WIN32 3121#ifdef _WIN32
1299 return 0; 3122 return 0;
1300#else 3123#else
1301 return getuid () != geteuid () 3124 return getuid () != geteuid ()
1302 || getgid () != getegid (); 3125 || getgid () != getegid ();
1303#endif 3126#endif
1304} 3127}
1305 3128
3129ecb_cold
1306unsigned int 3130unsigned int
1307ev_supported_backends (void) 3131ev_supported_backends (void) EV_NOEXCEPT
1308{ 3132{
1309 unsigned int flags = 0; 3133 unsigned int flags = 0;
1310 3134
1311 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 3135 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1312 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 3136 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
1313 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 3137 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
1314 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 3138 if (EV_USE_LINUXAIO ) flags |= EVBACKEND_LINUXAIO;
1315 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 3139 if (EV_USE_IOURING && ev_linux_version () >= 0x050601) flags |= EVBACKEND_IOURING; /* 5.6.1+ */
1316 3140 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
3141 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
3142
1317 return flags; 3143 return flags;
1318} 3144}
1319 3145
3146ecb_cold
1320unsigned int 3147unsigned int
1321ev_recommended_backends (void) 3148ev_recommended_backends (void) EV_NOEXCEPT
1322{ 3149{
1323 unsigned int flags = ev_supported_backends (); 3150 unsigned int flags = ev_supported_backends ();
1324 3151
1325#ifndef __NetBSD__ 3152#ifndef __NetBSD__
1326 /* kqueue is borked on everything but netbsd apparently */ 3153 /* kqueue is borked on everything but netbsd apparently */
… …
1330#ifdef __APPLE__ 3157#ifdef __APPLE__
1331 /* only select works correctly on that "unix-certified" platform */ 3158 /* only select works correctly on that "unix-certified" platform */
1332 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 3159 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1333 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 3160 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1334#endif 3161#endif
3162#ifdef __FreeBSD__
3163 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
3164#endif
3165
3166 /* TODO: linuxaio is very experimental */
3167#if !EV_RECOMMEND_LINUXAIO
3168 flags &= ~EVBACKEND_LINUXAIO;
3169#endif
3170 /* TODO: iouring is super experimental */
3171#if !EV_RECOMMEND_IOURING
3172 flags &= ~EVBACKEND_IOURING;
3173#endif
1335 3174
1336 return flags; 3175 return flags;
1337} 3176}
1338 3177
3178ecb_cold
1339unsigned int 3179unsigned int
1340ev_embeddable_backends (void) 3180ev_embeddable_backends (void) EV_NOEXCEPT
1341{ 3181{
1342 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 3182 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT | EVBACKEND_IOURING;
1343 3183
1344 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 3184 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1345 /* please fix it and tell me how to detect the fix */ 3185 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1346 flags &= ~EVBACKEND_EPOLL; 3186 flags &= ~EVBACKEND_EPOLL;
3187
3188 /* EVBACKEND_LINUXAIO is theoretically embeddable, but suffers from a performance overhead */
1347 3189
1348 return flags; 3190 return flags;
1349} 3191}
1350 3192
1351unsigned int 3193unsigned int
1352ev_backend (EV_P) 3194ev_backend (EV_P) EV_NOEXCEPT
1353{ 3195{
1354 return backend; 3196 return backend;
1355} 3197}
1356 3198
3199#if EV_FEATURE_API
1357unsigned int 3200unsigned int
1358ev_loop_count (EV_P) 3201ev_iteration (EV_P) EV_NOEXCEPT
1359{ 3202{
1360 return loop_count; 3203 return loop_count;
1361} 3204}
1362 3205
3206unsigned int
3207ev_depth (EV_P) EV_NOEXCEPT
3208{
3209 return loop_depth;
3210}
3211
1363void 3212void
1364ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 3213ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1365{ 3214{
1366 io_blocktime = interval; 3215 io_blocktime = interval;
1367} 3216}
1368 3217
1369void 3218void
1370ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 3219ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1371{ 3220{
1372 timeout_blocktime = interval; 3221 timeout_blocktime = interval;
1373} 3222}
1374 3223
3224void
3225ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
3226{
3227 userdata = data;
3228}
3229
3230void *
3231ev_userdata (EV_P) EV_NOEXCEPT
3232{
3233 return userdata;
3234}
3235
3236void
3237ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
3238{
3239 invoke_cb = invoke_pending_cb;
3240}
3241
3242void
3243ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
3244{
3245 release_cb = release;
3246 acquire_cb = acquire;
3247}
3248#endif
3249
1375/* initialise a loop structure, must be zero-initialised */ 3250/* initialise a loop structure, must be zero-initialised */
1376static void noinline 3251ecb_noinline ecb_cold
3252static void
1377loop_init (EV_P_ unsigned int flags) 3253loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
1378{ 3254{
1379 if (!backend) 3255 if (!backend)
1380 { 3256 {
3257 origflags = flags;
3258
1381#if EV_USE_REALTIME 3259#if EV_USE_REALTIME
1382 if (!have_realtime) 3260 if (!have_realtime)
1383 { 3261 {
1384 struct timespec ts; 3262 struct timespec ts;
1385 3263
… …
1396 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 3274 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1397 have_monotonic = 1; 3275 have_monotonic = 1;
1398 } 3276 }
1399#endif 3277#endif
1400 3278
1401 ev_rt_now = ev_time ();
1402 mn_now = get_clock ();
1403 now_floor = mn_now;
1404 rtmn_diff = ev_rt_now - mn_now;
1405
1406 io_blocktime = 0.;
1407 timeout_blocktime = 0.;
1408 backend = 0;
1409 backend_fd = -1;
1410 gotasync = 0;
1411#if EV_USE_INOTIFY
1412 fs_fd = -2;
1413#endif
1414
1415 /* pid check not overridable via env */ 3279 /* pid check not overridable via env */
1416#ifndef _WIN32 3280#ifndef _WIN32
1417 if (flags & EVFLAG_FORKCHECK) 3281 if (flags & EVFLAG_FORKCHECK)
1418 curpid = getpid (); 3282 curpid = getpid ();
1419#endif 3283#endif
… …
1421 if (!(flags & EVFLAG_NOENV) 3285 if (!(flags & EVFLAG_NOENV)
1422 && !enable_secure () 3286 && !enable_secure ()
1423 && getenv ("LIBEV_FLAGS")) 3287 && getenv ("LIBEV_FLAGS"))
1424 flags = atoi (getenv ("LIBEV_FLAGS")); 3288 flags = atoi (getenv ("LIBEV_FLAGS"));
1425 3289
1426 if (!(flags & 0x0000ffffU)) 3290 ev_rt_now = ev_time ();
3291 mn_now = get_clock ();
3292 now_floor = mn_now;
3293 rtmn_diff = ev_rt_now - mn_now;
3294#if EV_FEATURE_API
3295 invoke_cb = ev_invoke_pending;
3296#endif
3297
3298 io_blocktime = 0.;
3299 timeout_blocktime = 0.;
3300 backend = 0;
3301 backend_fd = -1;
3302 sig_pending = 0;
3303#if EV_ASYNC_ENABLE
3304 async_pending = 0;
3305#endif
3306 pipe_write_skipped = 0;
3307 pipe_write_wanted = 0;
3308 evpipe [0] = -1;
3309 evpipe [1] = -1;
3310#if EV_USE_INOTIFY
3311 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
3312#endif
3313#if EV_USE_SIGNALFD
3314 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
3315#endif
3316#if EV_USE_TIMERFD
3317 timerfd = flags & EVFLAG_NOTIMERFD ? -1 : -2;
3318#endif
3319
3320 if (!(flags & EVBACKEND_MASK))
1427 flags |= ev_recommended_backends (); 3321 flags |= ev_recommended_backends ();
1428 3322
3323#if EV_USE_IOCP
3324 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
3325#endif
1429#if EV_USE_PORT 3326#if EV_USE_PORT
1430 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 3327 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1431#endif 3328#endif
1432#if EV_USE_KQUEUE 3329#if EV_USE_KQUEUE
1433 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 3330 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
3331#endif
3332#if EV_USE_IOURING
3333 if (!backend && (flags & EVBACKEND_IOURING )) backend = iouring_init (EV_A_ flags);
3334#endif
3335#if EV_USE_LINUXAIO
3336 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
1434#endif 3337#endif
1435#if EV_USE_EPOLL 3338#if EV_USE_EPOLL
1436 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 3339 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
1437#endif 3340#endif
1438#if EV_USE_POLL 3341#if EV_USE_POLL
1439 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 3342 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
1440#endif 3343#endif
1441#if EV_USE_SELECT 3344#if EV_USE_SELECT
1442 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 3345 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
1443#endif 3346#endif
1444 3347
1445 ev_prepare_init (&pending_w, pendingcb); 3348 ev_prepare_init (&pending_w, pendingcb);
1446 3349
3350#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1447 ev_init (&pipe_w, pipecb); 3351 ev_init (&pipe_w, pipecb);
1448 ev_set_priority (&pipe_w, EV_MAXPRI); 3352 ev_set_priority (&pipe_w, EV_MAXPRI);
3353#endif
1449 } 3354 }
1450} 3355}
1451 3356
1452/* free up a loop structure */ 3357/* free up a loop structure */
1453static void noinline 3358ecb_cold
3359void
1454loop_destroy (EV_P) 3360ev_loop_destroy (EV_P)
1455{ 3361{
1456 int i; 3362 int i;
1457 3363
3364#if EV_MULTIPLICITY
3365 /* mimic free (0) */
3366 if (!EV_A)
3367 return;
3368#endif
3369
3370#if EV_CLEANUP_ENABLE
3371 /* queue cleanup watchers (and execute them) */
3372 if (ecb_expect_false (cleanupcnt))
3373 {
3374 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
3375 EV_INVOKE_PENDING;
3376 }
3377#endif
3378
3379#if EV_CHILD_ENABLE
3380 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
3381 {
3382 ev_ref (EV_A); /* child watcher */
3383 ev_signal_stop (EV_A_ &childev);
3384 }
3385#endif
3386
1458 if (ev_is_active (&pipe_w)) 3387 if (ev_is_active (&pipe_w))
1459 { 3388 {
1460 ev_ref (EV_A); /* signal watcher */ 3389 /*ev_ref (EV_A);*/
1461 ev_io_stop (EV_A_ &pipe_w); 3390 /*ev_io_stop (EV_A_ &pipe_w);*/
1462 3391
3392 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
3393 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
3394 }
3395
3396#if EV_USE_SIGNALFD
3397 if (ev_is_active (&sigfd_w))
3398 close (sigfd);
3399#endif
3400
1463#if EV_USE_EVENTFD 3401#if EV_USE_TIMERFD
1464 if (evfd >= 0) 3402 if (ev_is_active (&timerfd_w))
1465 close (evfd); 3403 close (timerfd);
1466#endif 3404#endif
1467
1468 if (evpipe [0] >= 0)
1469 {
1470 close (evpipe [0]);
1471 close (evpipe [1]);
1472 }
1473 }
1474 3405
1475#if EV_USE_INOTIFY 3406#if EV_USE_INOTIFY
1476 if (fs_fd >= 0) 3407 if (fs_fd >= 0)
1477 close (fs_fd); 3408 close (fs_fd);
1478#endif 3409#endif
1479 3410
1480 if (backend_fd >= 0) 3411 if (backend_fd >= 0)
1481 close (backend_fd); 3412 close (backend_fd);
1482 3413
3414#if EV_USE_IOCP
3415 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
3416#endif
1483#if EV_USE_PORT 3417#if EV_USE_PORT
1484 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3418 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1485#endif 3419#endif
1486#if EV_USE_KQUEUE 3420#if EV_USE_KQUEUE
1487 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3421 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
3422#endif
3423#if EV_USE_IOURING
3424 if (backend == EVBACKEND_IOURING ) iouring_destroy (EV_A);
3425#endif
3426#if EV_USE_LINUXAIO
3427 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
1488#endif 3428#endif
1489#if EV_USE_EPOLL 3429#if EV_USE_EPOLL
1490 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3430 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
1491#endif 3431#endif
1492#if EV_USE_POLL 3432#if EV_USE_POLL
1493 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3433 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
1494#endif 3434#endif
1495#if EV_USE_SELECT 3435#if EV_USE_SELECT
1496 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3436 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
1497#endif 3437#endif
1498 3438
1499 for (i = NUMPRI; i--; ) 3439 for (i = NUMPRI; i--; )
1500 { 3440 {
1501 array_free (pending, [i]); 3441 array_free (pending, [i]);
1502#if EV_IDLE_ENABLE 3442#if EV_IDLE_ENABLE
1503 array_free (idle, [i]); 3443 array_free (idle, [i]);
1504#endif 3444#endif
1505 } 3445 }
1506 3446
1507 ev_free (anfds); anfdmax = 0; 3447 ev_free (anfds); anfds = 0; anfdmax = 0;
1508 3448
1509 /* have to use the microsoft-never-gets-it-right macro */ 3449 /* have to use the microsoft-never-gets-it-right macro */
1510 array_free (rfeed, EMPTY); 3450 array_free (rfeed, EMPTY);
1511 array_free (fdchange, EMPTY); 3451 array_free (fdchange, EMPTY);
1512 array_free (timer, EMPTY); 3452 array_free (timer, EMPTY);
… …
1514 array_free (periodic, EMPTY); 3454 array_free (periodic, EMPTY);
1515#endif 3455#endif
1516#if EV_FORK_ENABLE 3456#if EV_FORK_ENABLE
1517 array_free (fork, EMPTY); 3457 array_free (fork, EMPTY);
1518#endif 3458#endif
3459#if EV_CLEANUP_ENABLE
3460 array_free (cleanup, EMPTY);
3461#endif
1519 array_free (prepare, EMPTY); 3462 array_free (prepare, EMPTY);
1520 array_free (check, EMPTY); 3463 array_free (check, EMPTY);
1521#if EV_ASYNC_ENABLE 3464#if EV_ASYNC_ENABLE
1522 array_free (async, EMPTY); 3465 array_free (async, EMPTY);
1523#endif 3466#endif
1524 3467
1525 backend = 0; 3468 backend = 0;
3469
3470#if EV_MULTIPLICITY
3471 if (ev_is_default_loop (EV_A))
3472#endif
3473 ev_default_loop_ptr = 0;
3474#if EV_MULTIPLICITY
3475 else
3476 ev_free (EV_A);
3477#endif
1526} 3478}
1527 3479
1528#if EV_USE_INOTIFY 3480#if EV_USE_INOTIFY
1529inline_size void infy_fork (EV_P); 3481inline_size void infy_fork (EV_P);
1530#endif 3482#endif
1531 3483
1532inline_size void 3484inline_size void
1533loop_fork (EV_P) 3485loop_fork (EV_P)
1534{ 3486{
1535#if EV_USE_PORT 3487#if EV_USE_PORT
1536 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3488 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1537#endif 3489#endif
1538#if EV_USE_KQUEUE 3490#if EV_USE_KQUEUE
1539 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 3491 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
3492#endif
3493#if EV_USE_IOURING
3494 if (backend == EVBACKEND_IOURING ) iouring_fork (EV_A);
3495#endif
3496#if EV_USE_LINUXAIO
3497 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
1540#endif 3498#endif
1541#if EV_USE_EPOLL 3499#if EV_USE_EPOLL
1542 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3500 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
1543#endif 3501#endif
1544#if EV_USE_INOTIFY 3502#if EV_USE_INOTIFY
1545 infy_fork (EV_A); 3503 infy_fork (EV_A);
1546#endif 3504#endif
1547 3505
3506 if (postfork != 2)
3507 {
3508 #if EV_USE_SIGNALFD
3509 /* surprisingly, nothing needs to be done for signalfd, accoridng to docs, it does the right thing on fork */
3510 #endif
3511
3512 #if EV_USE_TIMERFD
3513 if (ev_is_active (&timerfd_w))
3514 {
3515 ev_ref (EV_A);
3516 ev_io_stop (EV_A_ &timerfd_w);
3517
3518 close (timerfd);
3519 timerfd = -2;
3520
3521 evtimerfd_init (EV_A);
3522 /* reschedule periodics, in case we missed something */
3523 ev_feed_event (EV_A_ &timerfd_w, EV_CUSTOM);
3524 }
3525 #endif
3526
3527 #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1548 if (ev_is_active (&pipe_w)) 3528 if (ev_is_active (&pipe_w))
1549 { 3529 {
1550 /* this "locks" the handlers against writing to the pipe */ 3530 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1551 /* while we modify the fd vars */ 3531
1552 gotsig = 1;
1553#if EV_ASYNC_ENABLE
1554 gotasync = 1;
1555#endif
1556
1557 ev_ref (EV_A); 3532 ev_ref (EV_A);
1558 ev_io_stop (EV_A_ &pipe_w); 3533 ev_io_stop (EV_A_ &pipe_w);
1559 3534
1560#if EV_USE_EVENTFD
1561 if (evfd >= 0)
1562 close (evfd);
1563#endif
1564
1565 if (evpipe [0] >= 0) 3535 if (evpipe [0] >= 0)
3536 EV_WIN32_CLOSE_FD (evpipe [0]);
1566 { 3537
1567 close (evpipe [0]); 3538 evpipe_init (EV_A);
1568 close (evpipe [1]); 3539 /* iterate over everything, in case we missed something before */
3540 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1569 } 3541 }
1570 3542 #endif
1571 evpipe_init (EV_A);
1572 /* now iterate over everything, in case we missed something */
1573 pipecb (EV_A_ &pipe_w, EV_READ);
1574 } 3543 }
1575 3544
1576 postfork = 0; 3545 postfork = 0;
1577} 3546}
1578 3547
1579#if EV_MULTIPLICITY 3548#if EV_MULTIPLICITY
1580 3549
3550ecb_cold
1581struct ev_loop * 3551struct ev_loop *
1582ev_loop_new (unsigned int flags) 3552ev_loop_new (unsigned int flags) EV_NOEXCEPT
1583{ 3553{
1584 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3554 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1585 3555
1586 memset (loop, 0, sizeof (struct ev_loop)); 3556 memset (EV_A, 0, sizeof (struct ev_loop));
1587
1588 loop_init (EV_A_ flags); 3557 loop_init (EV_A_ flags);
1589 3558
1590 if (ev_backend (EV_A)) 3559 if (ev_backend (EV_A))
1591 return loop; 3560 return EV_A;
1592 3561
3562 ev_free (EV_A);
1593 return 0; 3563 return 0;
1594} 3564}
1595 3565
1596void 3566#endif /* multiplicity */
1597ev_loop_destroy (EV_P)
1598{
1599 loop_destroy (EV_A);
1600 ev_free (loop);
1601}
1602
1603void
1604ev_loop_fork (EV_P)
1605{
1606 postfork = 1; /* must be in line with ev_default_fork */
1607}
1608 3567
1609#if EV_VERIFY 3568#if EV_VERIFY
1610static void noinline 3569ecb_noinline ecb_cold
3570static void
1611verify_watcher (EV_P_ W w) 3571verify_watcher (EV_P_ W w)
1612{ 3572{
1613 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3573 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1614 3574
1615 if (w->pending) 3575 if (w->pending)
1616 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3576 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1617} 3577}
1618 3578
1619static void noinline 3579ecb_noinline ecb_cold
3580static void
1620verify_heap (EV_P_ ANHE *heap, int N) 3581verify_heap (EV_P_ ANHE *heap, int N)
1621{ 3582{
1622 int i; 3583 int i;
1623 3584
1624 for (i = HEAP0; i < N + HEAP0; ++i) 3585 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1629 3590
1630 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3591 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1631 } 3592 }
1632} 3593}
1633 3594
1634static void noinline 3595ecb_noinline ecb_cold
3596static void
1635array_verify (EV_P_ W *ws, int cnt) 3597array_verify (EV_P_ W *ws, int cnt)
1636{ 3598{
1637 while (cnt--) 3599 while (cnt--)
1638 { 3600 {
1639 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3601 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1640 verify_watcher (EV_A_ ws [cnt]); 3602 verify_watcher (EV_A_ ws [cnt]);
1641 } 3603 }
1642} 3604}
1643#endif 3605#endif
1644 3606
1645void 3607#if EV_FEATURE_API
1646ev_loop_verify (EV_P) 3608void ecb_cold
3609ev_verify (EV_P) EV_NOEXCEPT
1647{ 3610{
1648#if EV_VERIFY 3611#if EV_VERIFY
1649 int i; 3612 int i;
1650 WL w; 3613 WL w, w2;
1651 3614
1652 assert (activecnt >= -1); 3615 assert (activecnt >= -1);
1653 3616
1654 assert (fdchangemax >= fdchangecnt); 3617 assert (fdchangemax >= fdchangecnt);
1655 for (i = 0; i < fdchangecnt; ++i) 3618 for (i = 0; i < fdchangecnt; ++i)
1656 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3619 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1657 3620
1658 assert (anfdmax >= 0); 3621 assert (anfdmax >= 0);
1659 for (i = 0; i < anfdmax; ++i) 3622 for (i = 0; i < anfdmax; ++i)
3623 {
3624 int j = 0;
3625
1660 for (w = anfds [i].head; w; w = w->next) 3626 for (w = w2 = anfds [i].head; w; w = w->next)
1661 { 3627 {
1662 verify_watcher (EV_A_ (W)w); 3628 verify_watcher (EV_A_ (W)w);
3629
3630 if (j++ & 1)
3631 {
3632 assert (("libev: io watcher list contains a loop", w != w2));
3633 w2 = w2->next;
3634 }
3635
1663 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3636 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1664 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 3637 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1665 } 3638 }
3639 }
1666 3640
1667 assert (timermax >= timercnt); 3641 assert (timermax >= timercnt);
1668 verify_heap (EV_A_ timers, timercnt); 3642 verify_heap (EV_A_ timers, timercnt);
1669 3643
1670#if EV_PERIODIC_ENABLE 3644#if EV_PERIODIC_ENABLE
… …
1685#if EV_FORK_ENABLE 3659#if EV_FORK_ENABLE
1686 assert (forkmax >= forkcnt); 3660 assert (forkmax >= forkcnt);
1687 array_verify (EV_A_ (W *)forks, forkcnt); 3661 array_verify (EV_A_ (W *)forks, forkcnt);
1688#endif 3662#endif
1689 3663
3664#if EV_CLEANUP_ENABLE
3665 assert (cleanupmax >= cleanupcnt);
3666 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
3667#endif
3668
1690#if EV_ASYNC_ENABLE 3669#if EV_ASYNC_ENABLE
1691 assert (asyncmax >= asynccnt); 3670 assert (asyncmax >= asynccnt);
1692 array_verify (EV_A_ (W *)asyncs, asynccnt); 3671 array_verify (EV_A_ (W *)asyncs, asynccnt);
1693#endif 3672#endif
1694 3673
3674#if EV_PREPARE_ENABLE
1695 assert (preparemax >= preparecnt); 3675 assert (preparemax >= preparecnt);
1696 array_verify (EV_A_ (W *)prepares, preparecnt); 3676 array_verify (EV_A_ (W *)prepares, preparecnt);
3677#endif
1697 3678
3679#if EV_CHECK_ENABLE
1698 assert (checkmax >= checkcnt); 3680 assert (checkmax >= checkcnt);
1699 array_verify (EV_A_ (W *)checks, checkcnt); 3681 array_verify (EV_A_ (W *)checks, checkcnt);
3682#endif
1700 3683
1701# if 0 3684# if 0
3685#if EV_CHILD_ENABLE
1702 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 3686 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1703 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 3687 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
3688#endif
1704# endif 3689# endif
1705#endif 3690#endif
1706} 3691}
1707 3692#endif
1708#endif /* multiplicity */
1709 3693
1710#if EV_MULTIPLICITY 3694#if EV_MULTIPLICITY
3695ecb_cold
1711struct ev_loop * 3696struct ev_loop *
1712ev_default_loop_init (unsigned int flags)
1713#else 3697#else
1714int 3698int
3699#endif
1715ev_default_loop (unsigned int flags) 3700ev_default_loop (unsigned int flags) EV_NOEXCEPT
1716#endif
1717{ 3701{
1718 if (!ev_default_loop_ptr) 3702 if (!ev_default_loop_ptr)
1719 { 3703 {
1720#if EV_MULTIPLICITY 3704#if EV_MULTIPLICITY
1721 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 3705 EV_P = ev_default_loop_ptr = &default_loop_struct;
1722#else 3706#else
1723 ev_default_loop_ptr = 1; 3707 ev_default_loop_ptr = 1;
1724#endif 3708#endif
1725 3709
1726 loop_init (EV_A_ flags); 3710 loop_init (EV_A_ flags);
1727 3711
1728 if (ev_backend (EV_A)) 3712 if (ev_backend (EV_A))
1729 { 3713 {
1730#ifndef _WIN32 3714#if EV_CHILD_ENABLE
1731 ev_signal_init (&childev, childcb, SIGCHLD); 3715 ev_signal_init (&childev, childcb, SIGCHLD);
1732 ev_set_priority (&childev, EV_MAXPRI); 3716 ev_set_priority (&childev, EV_MAXPRI);
1733 ev_signal_start (EV_A_ &childev); 3717 ev_signal_start (EV_A_ &childev);
1734 ev_unref (EV_A); /* child watcher should not keep loop alive */ 3718 ev_unref (EV_A); /* child watcher should not keep loop alive */
1735#endif 3719#endif
… …
1740 3724
1741 return ev_default_loop_ptr; 3725 return ev_default_loop_ptr;
1742} 3726}
1743 3727
1744void 3728void
1745ev_default_destroy (void) 3729ev_loop_fork (EV_P) EV_NOEXCEPT
1746{ 3730{
1747#if EV_MULTIPLICITY 3731 postfork = 1;
1748 struct ev_loop *loop = ev_default_loop_ptr;
1749#endif
1750
1751 ev_default_loop_ptr = 0;
1752
1753#ifndef _WIN32
1754 ev_ref (EV_A); /* child watcher */
1755 ev_signal_stop (EV_A_ &childev);
1756#endif
1757
1758 loop_destroy (EV_A);
1759}
1760
1761void
1762ev_default_fork (void)
1763{
1764#if EV_MULTIPLICITY
1765 struct ev_loop *loop = ev_default_loop_ptr;
1766#endif
1767
1768 postfork = 1; /* must be in line with ev_loop_fork */
1769} 3732}
1770 3733
1771/*****************************************************************************/ 3734/*****************************************************************************/
1772 3735
1773void 3736void
1774ev_invoke (EV_P_ void *w, int revents) 3737ev_invoke (EV_P_ void *w, int revents)
1775{ 3738{
1776 EV_CB_INVOKE ((W)w, revents); 3739 EV_CB_INVOKE ((W)w, revents);
1777} 3740}
1778 3741
1779inline_speed void 3742unsigned int
1780call_pending (EV_P) 3743ev_pending_count (EV_P) EV_NOEXCEPT
1781{ 3744{
1782 int pri; 3745 int pri;
3746 unsigned int count = 0;
1783 3747
1784 for (pri = NUMPRI; pri--; ) 3748 for (pri = NUMPRI; pri--; )
3749 count += pendingcnt [pri];
3750
3751 return count;
3752}
3753
3754ecb_noinline
3755void
3756ev_invoke_pending (EV_P)
3757{
3758 pendingpri = NUMPRI;
3759
3760 do
3761 {
3762 --pendingpri;
3763
3764 /* pendingpri possibly gets modified in the inner loop */
1785 while (pendingcnt [pri]) 3765 while (pendingcnt [pendingpri])
1786 { 3766 {
1787 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3767 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
1788 3768
1789 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1790 /* ^ this is no longer true, as pending_w could be here */
1791
1792 p->w->pending = 0; 3769 p->w->pending = 0;
1793 EV_CB_INVOKE (p->w, p->events); 3770 EV_CB_INVOKE (p->w, p->events);
1794 EV_FREQUENT_CHECK; 3771 EV_FREQUENT_CHECK;
1795 } 3772 }
3773 }
3774 while (pendingpri);
1796} 3775}
1797 3776
1798#if EV_IDLE_ENABLE 3777#if EV_IDLE_ENABLE
1799/* make idle watchers pending. this handles the "call-idle */ 3778/* make idle watchers pending. this handles the "call-idle */
1800/* only when higher priorities are idle" logic */ 3779/* only when higher priorities are idle" logic */
1801inline_size void 3780inline_size void
1802idle_reify (EV_P) 3781idle_reify (EV_P)
1803{ 3782{
1804 if (expect_false (idleall)) 3783 if (ecb_expect_false (idleall))
1805 { 3784 {
1806 int pri; 3785 int pri;
1807 3786
1808 for (pri = NUMPRI; pri--; ) 3787 for (pri = NUMPRI; pri--; )
1809 { 3788 {
… …
1839 { 3818 {
1840 ev_at (w) += w->repeat; 3819 ev_at (w) += w->repeat;
1841 if (ev_at (w) < mn_now) 3820 if (ev_at (w) < mn_now)
1842 ev_at (w) = mn_now; 3821 ev_at (w) = mn_now;
1843 3822
1844 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 3823 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > EV_TS_CONST (0.)));
1845 3824
1846 ANHE_at_cache (timers [HEAP0]); 3825 ANHE_at_cache (timers [HEAP0]);
1847 downheap (timers, timercnt, HEAP0); 3826 downheap (timers, timercnt, HEAP0);
1848 } 3827 }
1849 else 3828 else
… …
1852 EV_FREQUENT_CHECK; 3831 EV_FREQUENT_CHECK;
1853 feed_reverse (EV_A_ (W)w); 3832 feed_reverse (EV_A_ (W)w);
1854 } 3833 }
1855 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 3834 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1856 3835
1857 feed_reverse_done (EV_A_ EV_TIMEOUT); 3836 feed_reverse_done (EV_A_ EV_TIMER);
1858 } 3837 }
1859} 3838}
1860 3839
1861#if EV_PERIODIC_ENABLE 3840#if EV_PERIODIC_ENABLE
3841
3842ecb_noinline
3843static void
3844periodic_recalc (EV_P_ ev_periodic *w)
3845{
3846 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3847 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3848
3849 /* the above almost always errs on the low side */
3850 while (at <= ev_rt_now)
3851 {
3852 ev_tstamp nat = at + w->interval;
3853
3854 /* when resolution fails us, we use ev_rt_now */
3855 if (ecb_expect_false (nat == at))
3856 {
3857 at = ev_rt_now;
3858 break;
3859 }
3860
3861 at = nat;
3862 }
3863
3864 ev_at (w) = at;
3865}
3866
1862/* make periodics pending */ 3867/* make periodics pending */
1863inline_size void 3868inline_size void
1864periodics_reify (EV_P) 3869periodics_reify (EV_P)
1865{ 3870{
1866 EV_FREQUENT_CHECK; 3871 EV_FREQUENT_CHECK;
1867 3872
1868 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3873 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1869 { 3874 {
1870 int feed_count = 0;
1871
1872 do 3875 do
1873 { 3876 {
1874 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3877 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
1875 3878
1876 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3879 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
1885 ANHE_at_cache (periodics [HEAP0]); 3888 ANHE_at_cache (periodics [HEAP0]);
1886 downheap (periodics, periodiccnt, HEAP0); 3889 downheap (periodics, periodiccnt, HEAP0);
1887 } 3890 }
1888 else if (w->interval) 3891 else if (w->interval)
1889 { 3892 {
1890 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3893 periodic_recalc (EV_A_ w);
1891 /* if next trigger time is not sufficiently in the future, put it there */
1892 /* this might happen because of floating point inexactness */
1893 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1894 {
1895 ev_at (w) += w->interval;
1896
1897 /* if interval is unreasonably low we might still have a time in the past */
1898 /* so correct this. this will make the periodic very inexact, but the user */
1899 /* has effectively asked to get triggered more often than possible */
1900 if (ev_at (w) < ev_rt_now)
1901 ev_at (w) = ev_rt_now;
1902 }
1903
1904 ANHE_at_cache (periodics [HEAP0]); 3894 ANHE_at_cache (periodics [HEAP0]);
1905 downheap (periodics, periodiccnt, HEAP0); 3895 downheap (periodics, periodiccnt, HEAP0);
1906 } 3896 }
1907 else 3897 else
1908 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3898 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
1915 feed_reverse_done (EV_A_ EV_PERIODIC); 3905 feed_reverse_done (EV_A_ EV_PERIODIC);
1916 } 3906 }
1917} 3907}
1918 3908
1919/* simply recalculate all periodics */ 3909/* simply recalculate all periodics */
1920/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 3910/* TODO: maybe ensure that at least one event happens when jumping forward? */
1921static void noinline 3911ecb_noinline ecb_cold
3912static void
1922periodics_reschedule (EV_P) 3913periodics_reschedule (EV_P)
1923{ 3914{
1924 int i; 3915 int i;
1925 3916
1926 /* adjust periodics after time jump */ 3917 /* adjust periodics after time jump */
… …
1929 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3920 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1930 3921
1931 if (w->reschedule_cb) 3922 if (w->reschedule_cb)
1932 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3923 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1933 else if (w->interval) 3924 else if (w->interval)
1934 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3925 periodic_recalc (EV_A_ w);
1935 3926
1936 ANHE_at_cache (periodics [i]); 3927 ANHE_at_cache (periodics [i]);
1937 } 3928 }
1938 3929
1939 reheap (periodics, periodiccnt); 3930 reheap (periodics, periodiccnt);
1940} 3931}
1941#endif 3932#endif
1942 3933
1943/* adjust all timers by a given offset */ 3934/* adjust all timers by a given offset */
1944static void noinline 3935ecb_noinline ecb_cold
3936static void
1945timers_reschedule (EV_P_ ev_tstamp adjust) 3937timers_reschedule (EV_P_ ev_tstamp adjust)
1946{ 3938{
1947 int i; 3939 int i;
1948 3940
1949 for (i = 0; i < timercnt; ++i) 3941 for (i = 0; i < timercnt; ++i)
… …
1953 ANHE_at_cache (*he); 3945 ANHE_at_cache (*he);
1954 } 3946 }
1955} 3947}
1956 3948
1957/* fetch new monotonic and realtime times from the kernel */ 3949/* fetch new monotonic and realtime times from the kernel */
1958/* also detetc if there was a timejump, and act accordingly */ 3950/* also detect if there was a timejump, and act accordingly */
1959inline_speed void 3951inline_speed void
1960time_update (EV_P_ ev_tstamp max_block) 3952time_update (EV_P_ ev_tstamp max_block)
1961{ 3953{
1962#if EV_USE_MONOTONIC 3954#if EV_USE_MONOTONIC
1963 if (expect_true (have_monotonic)) 3955 if (ecb_expect_true (have_monotonic))
1964 { 3956 {
1965 int i; 3957 int i;
1966 ev_tstamp odiff = rtmn_diff; 3958 ev_tstamp odiff = rtmn_diff;
1967 3959
1968 mn_now = get_clock (); 3960 mn_now = get_clock ();
1969 3961
1970 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3962 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
1971 /* interpolate in the meantime */ 3963 /* interpolate in the meantime */
1972 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 3964 if (ecb_expect_true (mn_now - now_floor < EV_TS_CONST (MIN_TIMEJUMP * .5)))
1973 { 3965 {
1974 ev_rt_now = rtmn_diff + mn_now; 3966 ev_rt_now = rtmn_diff + mn_now;
1975 return; 3967 return;
1976 } 3968 }
1977 3969
… …
1986 * doesn't hurt either as we only do this on time-jumps or 3978 * doesn't hurt either as we only do this on time-jumps or
1987 * in the unlikely event of having been preempted here. 3979 * in the unlikely event of having been preempted here.
1988 */ 3980 */
1989 for (i = 4; --i; ) 3981 for (i = 4; --i; )
1990 { 3982 {
3983 ev_tstamp diff;
1991 rtmn_diff = ev_rt_now - mn_now; 3984 rtmn_diff = ev_rt_now - mn_now;
1992 3985
1993 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3986 diff = odiff - rtmn_diff;
3987
3988 if (ecb_expect_true ((diff < EV_TS_CONST (0.) ? -diff : diff) < EV_TS_CONST (MIN_TIMEJUMP)))
1994 return; /* all is well */ 3989 return; /* all is well */
1995 3990
1996 ev_rt_now = ev_time (); 3991 ev_rt_now = ev_time ();
1997 mn_now = get_clock (); 3992 mn_now = get_clock ();
1998 now_floor = mn_now; 3993 now_floor = mn_now;
… …
2007 else 4002 else
2008#endif 4003#endif
2009 { 4004 {
2010 ev_rt_now = ev_time (); 4005 ev_rt_now = ev_time ();
2011 4006
2012 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 4007 if (ecb_expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + EV_TS_CONST (MIN_TIMEJUMP)))
2013 { 4008 {
2014 /* adjust timers. this is easy, as the offset is the same for all of them */ 4009 /* adjust timers. this is easy, as the offset is the same for all of them */
2015 timers_reschedule (EV_A_ ev_rt_now - mn_now); 4010 timers_reschedule (EV_A_ ev_rt_now - mn_now);
2016#if EV_PERIODIC_ENABLE 4011#if EV_PERIODIC_ENABLE
2017 periodics_reschedule (EV_A); 4012 periodics_reschedule (EV_A);
… …
2020 4015
2021 mn_now = ev_rt_now; 4016 mn_now = ev_rt_now;
2022 } 4017 }
2023} 4018}
2024 4019
2025static int loop_done; 4020int
2026
2027void
2028ev_loop (EV_P_ int flags) 4021ev_run (EV_P_ int flags)
2029{ 4022{
4023#if EV_FEATURE_API
4024 ++loop_depth;
4025#endif
4026
4027 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
4028
2030 loop_done = EVUNLOOP_CANCEL; 4029 loop_done = EVBREAK_CANCEL;
2031 4030
2032 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 4031 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2033 4032
2034 do 4033 do
2035 { 4034 {
2036#if EV_VERIFY >= 2 4035#if EV_VERIFY >= 2
2037 ev_loop_verify (EV_A); 4036 ev_verify (EV_A);
2038#endif 4037#endif
2039 4038
2040#ifndef _WIN32 4039#ifndef _WIN32
2041 if (expect_false (curpid)) /* penalise the forking check even more */ 4040 if (ecb_expect_false (curpid)) /* penalise the forking check even more */
2042 if (expect_false (getpid () != curpid)) 4041 if (ecb_expect_false (getpid () != curpid))
2043 { 4042 {
2044 curpid = getpid (); 4043 curpid = getpid ();
2045 postfork = 1; 4044 postfork = 1;
2046 } 4045 }
2047#endif 4046#endif
2048 4047
2049#if EV_FORK_ENABLE 4048#if EV_FORK_ENABLE
2050 /* we might have forked, so queue fork handlers */ 4049 /* we might have forked, so queue fork handlers */
2051 if (expect_false (postfork)) 4050 if (ecb_expect_false (postfork))
2052 if (forkcnt) 4051 if (forkcnt)
2053 { 4052 {
2054 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 4053 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2055 call_pending (EV_A); 4054 EV_INVOKE_PENDING;
2056 } 4055 }
2057#endif 4056#endif
2058 4057
4058#if EV_PREPARE_ENABLE
2059 /* queue prepare watchers (and execute them) */ 4059 /* queue prepare watchers (and execute them) */
2060 if (expect_false (preparecnt)) 4060 if (ecb_expect_false (preparecnt))
2061 { 4061 {
2062 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 4062 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2063 call_pending (EV_A); 4063 EV_INVOKE_PENDING;
2064 } 4064 }
4065#endif
4066
4067 if (ecb_expect_false (loop_done))
4068 break;
2065 4069
2066 /* we might have forked, so reify kernel state if necessary */ 4070 /* we might have forked, so reify kernel state if necessary */
2067 if (expect_false (postfork)) 4071 if (ecb_expect_false (postfork))
2068 loop_fork (EV_A); 4072 loop_fork (EV_A);
2069 4073
2070 /* update fd-related kernel structures */ 4074 /* update fd-related kernel structures */
2071 fd_reify (EV_A); 4075 fd_reify (EV_A);
2072 4076
2073 /* calculate blocking time */ 4077 /* calculate blocking time */
2074 { 4078 {
2075 ev_tstamp waittime = 0.; 4079 ev_tstamp waittime = 0.;
2076 ev_tstamp sleeptime = 0.; 4080 ev_tstamp sleeptime = 0.;
2077 4081
4082 /* remember old timestamp for io_blocktime calculation */
4083 ev_tstamp prev_mn_now = mn_now;
4084
4085 /* update time to cancel out callback processing overhead */
4086 time_update (EV_A_ EV_TS_CONST (EV_TSTAMP_HUGE));
4087
4088 /* from now on, we want a pipe-wake-up */
4089 pipe_write_wanted = 1;
4090
4091 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
4092
2078 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 4093 if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2079 { 4094 {
2080 /* update time to cancel out callback processing overhead */
2081 time_update (EV_A_ 1e100);
2082
2083 waittime = MAX_BLOCKTIME; 4095 waittime = EV_TS_CONST (MAX_BLOCKTIME);
4096
4097#if EV_USE_MONOTONIC
4098 if (ecb_expect_true (have_monotonic))
4099 {
4100#if EV_USE_TIMERFD
4101 /* sleep a lot longer when we can reliably detect timejumps */
4102 if (ecb_expect_true (timerfd != -1))
4103 waittime = EV_TS_CONST (MAX_BLOCKTIME2);
4104#endif
4105#if !EV_PERIODIC_ENABLE
4106 /* without periodics but with monotonic clock there is no need */
4107 /* for any time jump detection, so sleep longer */
4108 waittime = EV_TS_CONST (MAX_BLOCKTIME2);
4109#endif
4110 }
4111#endif
2084 4112
2085 if (timercnt) 4113 if (timercnt)
2086 { 4114 {
2087 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 4115 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2088 if (waittime > to) waittime = to; 4116 if (waittime > to) waittime = to;
2089 } 4117 }
2090 4118
2091#if EV_PERIODIC_ENABLE 4119#if EV_PERIODIC_ENABLE
2092 if (periodiccnt) 4120 if (periodiccnt)
2093 { 4121 {
2094 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 4122 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2095 if (waittime > to) waittime = to; 4123 if (waittime > to) waittime = to;
2096 } 4124 }
2097#endif 4125#endif
2098 4126
4127 /* don't let timeouts decrease the waittime below timeout_blocktime */
2099 if (expect_false (waittime < timeout_blocktime)) 4128 if (ecb_expect_false (waittime < timeout_blocktime))
2100 waittime = timeout_blocktime; 4129 waittime = timeout_blocktime;
2101 4130
2102 sleeptime = waittime - backend_fudge; 4131 /* now there are two more special cases left, either we have
4132 * already-expired timers, so we should not sleep, or we have timers
4133 * that expire very soon, in which case we need to wait for a minimum
4134 * amount of time for some event loop backends.
4135 */
4136 if (ecb_expect_false (waittime < backend_mintime))
4137 waittime = waittime <= EV_TS_CONST (0.)
4138 ? EV_TS_CONST (0.)
4139 : backend_mintime;
2103 4140
4141 /* extra check because io_blocktime is commonly 0 */
2104 if (expect_true (sleeptime > io_blocktime)) 4142 if (ecb_expect_false (io_blocktime))
2105 sleeptime = io_blocktime;
2106
2107 if (sleeptime)
2108 { 4143 {
4144 sleeptime = io_blocktime - (mn_now - prev_mn_now);
4145
4146 if (sleeptime > waittime - backend_mintime)
4147 sleeptime = waittime - backend_mintime;
4148
4149 if (ecb_expect_true (sleeptime > EV_TS_CONST (0.)))
4150 {
2109 ev_sleep (sleeptime); 4151 ev_sleep (sleeptime);
2110 waittime -= sleeptime; 4152 waittime -= sleeptime;
4153 }
2111 } 4154 }
2112 } 4155 }
2113 4156
4157#if EV_FEATURE_API
2114 ++loop_count; 4158 ++loop_count;
4159#endif
4160 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2115 backend_poll (EV_A_ waittime); 4161 backend_poll (EV_A_ waittime);
4162 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
4163
4164 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
4165
4166 ECB_MEMORY_FENCE_ACQUIRE;
4167 if (pipe_write_skipped)
4168 {
4169 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
4170 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
4171 }
2116 4172
2117 /* update ev_rt_now, do magic */ 4173 /* update ev_rt_now, do magic */
2118 time_update (EV_A_ waittime + sleeptime); 4174 time_update (EV_A_ waittime + sleeptime);
2119 } 4175 }
2120 4176
… …
2127#if EV_IDLE_ENABLE 4183#if EV_IDLE_ENABLE
2128 /* queue idle watchers unless other events are pending */ 4184 /* queue idle watchers unless other events are pending */
2129 idle_reify (EV_A); 4185 idle_reify (EV_A);
2130#endif 4186#endif
2131 4187
4188#if EV_CHECK_ENABLE
2132 /* queue check watchers, to be executed first */ 4189 /* queue check watchers, to be executed first */
2133 if (expect_false (checkcnt)) 4190 if (ecb_expect_false (checkcnt))
2134 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 4191 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
4192#endif
2135 4193
2136 call_pending (EV_A); 4194 EV_INVOKE_PENDING;
2137 } 4195 }
2138 while (expect_true ( 4196 while (ecb_expect_true (
2139 activecnt 4197 activecnt
2140 && !loop_done 4198 && !loop_done
2141 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 4199 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2142 )); 4200 ));
2143 4201
2144 if (loop_done == EVUNLOOP_ONE) 4202 if (loop_done == EVBREAK_ONE)
2145 loop_done = EVUNLOOP_CANCEL; 4203 loop_done = EVBREAK_CANCEL;
4204
4205#if EV_FEATURE_API
4206 --loop_depth;
4207#endif
4208
4209 return activecnt;
2146} 4210}
2147 4211
2148void 4212void
2149ev_unloop (EV_P_ int how) 4213ev_break (EV_P_ int how) EV_NOEXCEPT
2150{ 4214{
2151 loop_done = how; 4215 loop_done = how;
2152} 4216}
2153 4217
2154void 4218void
2155ev_ref (EV_P) 4219ev_ref (EV_P) EV_NOEXCEPT
2156{ 4220{
2157 ++activecnt; 4221 ++activecnt;
2158} 4222}
2159 4223
2160void 4224void
2161ev_unref (EV_P) 4225ev_unref (EV_P) EV_NOEXCEPT
2162{ 4226{
2163 --activecnt; 4227 --activecnt;
2164} 4228}
2165 4229
2166void 4230void
2167ev_now_update (EV_P) 4231ev_now_update (EV_P) EV_NOEXCEPT
2168{ 4232{
2169 time_update (EV_A_ 1e100); 4233 time_update (EV_A_ EV_TSTAMP_HUGE);
2170} 4234}
2171 4235
2172void 4236void
2173ev_suspend (EV_P) 4237ev_suspend (EV_P) EV_NOEXCEPT
2174{ 4238{
2175 ev_now_update (EV_A); 4239 ev_now_update (EV_A);
2176} 4240}
2177 4241
2178void 4242void
2179ev_resume (EV_P) 4243ev_resume (EV_P) EV_NOEXCEPT
2180{ 4244{
2181 ev_tstamp mn_prev = mn_now; 4245 ev_tstamp mn_prev = mn_now;
2182 4246
2183 ev_now_update (EV_A); 4247 ev_now_update (EV_A);
2184 timers_reschedule (EV_A_ mn_now - mn_prev); 4248 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2201inline_size void 4265inline_size void
2202wlist_del (WL *head, WL elem) 4266wlist_del (WL *head, WL elem)
2203{ 4267{
2204 while (*head) 4268 while (*head)
2205 { 4269 {
2206 if (*head == elem) 4270 if (ecb_expect_true (*head == elem))
2207 { 4271 {
2208 *head = elem->next; 4272 *head = elem->next;
2209 return; 4273 break;
2210 } 4274 }
2211 4275
2212 head = &(*head)->next; 4276 head = &(*head)->next;
2213 } 4277 }
2214} 4278}
… …
2223 w->pending = 0; 4287 w->pending = 0;
2224 } 4288 }
2225} 4289}
2226 4290
2227int 4291int
2228ev_clear_pending (EV_P_ void *w) 4292ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
2229{ 4293{
2230 W w_ = (W)w; 4294 W w_ = (W)w;
2231 int pending = w_->pending; 4295 int pending = w_->pending;
2232 4296
2233 if (expect_true (pending)) 4297 if (ecb_expect_true (pending))
2234 { 4298 {
2235 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 4299 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2236 p->w = (W)&pending_w; 4300 p->w = (W)&pending_w;
2237 w_->pending = 0; 4301 w_->pending = 0;
2238 return p->events; 4302 return p->events;
… …
2242} 4306}
2243 4307
2244inline_size void 4308inline_size void
2245pri_adjust (EV_P_ W w) 4309pri_adjust (EV_P_ W w)
2246{ 4310{
2247 int pri = w->priority; 4311 int pri = ev_priority (w);
2248 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 4312 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2249 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 4313 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2250 w->priority = pri; 4314 ev_set_priority (w, pri);
2251} 4315}
2252 4316
2253inline_speed void 4317inline_speed void
2254ev_start (EV_P_ W w, int active) 4318ev_start (EV_P_ W w, int active)
2255{ 4319{
… …
2265 w->active = 0; 4329 w->active = 0;
2266} 4330}
2267 4331
2268/*****************************************************************************/ 4332/*****************************************************************************/
2269 4333
2270void noinline 4334ecb_noinline
4335void
2271ev_io_start (EV_P_ ev_io *w) 4336ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
2272{ 4337{
2273 int fd = w->fd; 4338 int fd = w->fd;
2274 4339
2275 if (expect_false (ev_is_active (w))) 4340 if (ecb_expect_false (ev_is_active (w)))
2276 return; 4341 return;
2277 4342
2278 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 4343 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2279 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 4344 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2280 4345
4346#if EV_VERIFY >= 2
4347 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
4348#endif
2281 EV_FREQUENT_CHECK; 4349 EV_FREQUENT_CHECK;
2282 4350
2283 ev_start (EV_A_ (W)w, 1); 4351 ev_start (EV_A_ (W)w, 1);
2284 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 4352 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
2285 wlist_add (&anfds[fd].head, (WL)w); 4353 wlist_add (&anfds[fd].head, (WL)w);
2286 4354
4355 /* common bug, apparently */
4356 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
4357
2287 fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1); 4358 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2288 w->events &= ~EV__IOFDSET; 4359 w->events &= ~EV__IOFDSET;
2289 4360
2290 EV_FREQUENT_CHECK; 4361 EV_FREQUENT_CHECK;
2291} 4362}
2292 4363
2293void noinline 4364ecb_noinline
4365void
2294ev_io_stop (EV_P_ ev_io *w) 4366ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
2295{ 4367{
2296 clear_pending (EV_A_ (W)w); 4368 clear_pending (EV_A_ (W)w);
2297 if (expect_false (!ev_is_active (w))) 4369 if (ecb_expect_false (!ev_is_active (w)))
2298 return; 4370 return;
2299 4371
2300 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 4372 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2301 4373
4374#if EV_VERIFY >= 2
4375 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
4376#endif
2302 EV_FREQUENT_CHECK; 4377 EV_FREQUENT_CHECK;
2303 4378
2304 wlist_del (&anfds[w->fd].head, (WL)w); 4379 wlist_del (&anfds[w->fd].head, (WL)w);
2305 ev_stop (EV_A_ (W)w); 4380 ev_stop (EV_A_ (W)w);
2306 4381
2307 fd_change (EV_A_ w->fd, 1); 4382 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2308 4383
2309 EV_FREQUENT_CHECK; 4384 EV_FREQUENT_CHECK;
2310} 4385}
2311 4386
2312void noinline 4387ecb_noinline
4388void
2313ev_timer_start (EV_P_ ev_timer *w) 4389ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
2314{ 4390{
2315 if (expect_false (ev_is_active (w))) 4391 if (ecb_expect_false (ev_is_active (w)))
2316 return; 4392 return;
2317 4393
2318 ev_at (w) += mn_now; 4394 ev_at (w) += mn_now;
2319 4395
2320 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 4396 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2321 4397
2322 EV_FREQUENT_CHECK; 4398 EV_FREQUENT_CHECK;
2323 4399
2324 ++timercnt; 4400 ++timercnt;
2325 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 4401 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
2326 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 4402 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
2327 ANHE_w (timers [ev_active (w)]) = (WT)w; 4403 ANHE_w (timers [ev_active (w)]) = (WT)w;
2328 ANHE_at_cache (timers [ev_active (w)]); 4404 ANHE_at_cache (timers [ev_active (w)]);
2329 upheap (timers, ev_active (w)); 4405 upheap (timers, ev_active (w));
2330 4406
2331 EV_FREQUENT_CHECK; 4407 EV_FREQUENT_CHECK;
2332 4408
2333 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 4409 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2334} 4410}
2335 4411
2336void noinline 4412ecb_noinline
4413void
2337ev_timer_stop (EV_P_ ev_timer *w) 4414ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
2338{ 4415{
2339 clear_pending (EV_A_ (W)w); 4416 clear_pending (EV_A_ (W)w);
2340 if (expect_false (!ev_is_active (w))) 4417 if (ecb_expect_false (!ev_is_active (w)))
2341 return; 4418 return;
2342 4419
2343 EV_FREQUENT_CHECK; 4420 EV_FREQUENT_CHECK;
2344 4421
2345 { 4422 {
… …
2347 4424
2348 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 4425 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2349 4426
2350 --timercnt; 4427 --timercnt;
2351 4428
2352 if (expect_true (active < timercnt + HEAP0)) 4429 if (ecb_expect_true (active < timercnt + HEAP0))
2353 { 4430 {
2354 timers [active] = timers [timercnt + HEAP0]; 4431 timers [active] = timers [timercnt + HEAP0];
2355 adjustheap (timers, timercnt, active); 4432 adjustheap (timers, timercnt, active);
2356 } 4433 }
2357 } 4434 }
2358 4435
4436 ev_at (w) -= mn_now;
4437
4438 ev_stop (EV_A_ (W)w);
4439
2359 EV_FREQUENT_CHECK; 4440 EV_FREQUENT_CHECK;
2360
2361 ev_at (w) -= mn_now;
2362
2363 ev_stop (EV_A_ (W)w);
2364} 4441}
2365 4442
2366void noinline 4443ecb_noinline
4444void
2367ev_timer_again (EV_P_ ev_timer *w) 4445ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
2368{ 4446{
2369 EV_FREQUENT_CHECK; 4447 EV_FREQUENT_CHECK;
4448
4449 clear_pending (EV_A_ (W)w);
2370 4450
2371 if (ev_is_active (w)) 4451 if (ev_is_active (w))
2372 { 4452 {
2373 if (w->repeat) 4453 if (w->repeat)
2374 { 4454 {
… …
2386 } 4466 }
2387 4467
2388 EV_FREQUENT_CHECK; 4468 EV_FREQUENT_CHECK;
2389} 4469}
2390 4470
4471ev_tstamp
4472ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
4473{
4474 return ev_at (w) - (ev_is_active (w) ? mn_now : EV_TS_CONST (0.));
4475}
4476
2391#if EV_PERIODIC_ENABLE 4477#if EV_PERIODIC_ENABLE
2392void noinline 4478ecb_noinline
4479void
2393ev_periodic_start (EV_P_ ev_periodic *w) 4480ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
2394{ 4481{
2395 if (expect_false (ev_is_active (w))) 4482 if (ecb_expect_false (ev_is_active (w)))
2396 return; 4483 return;
4484
4485#if EV_USE_TIMERFD
4486 if (timerfd == -2)
4487 evtimerfd_init (EV_A);
4488#endif
2397 4489
2398 if (w->reschedule_cb) 4490 if (w->reschedule_cb)
2399 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4491 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2400 else if (w->interval) 4492 else if (w->interval)
2401 { 4493 {
2402 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 4494 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2403 /* this formula differs from the one in periodic_reify because we do not always round up */ 4495 periodic_recalc (EV_A_ w);
2404 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2405 } 4496 }
2406 else 4497 else
2407 ev_at (w) = w->offset; 4498 ev_at (w) = w->offset;
2408 4499
2409 EV_FREQUENT_CHECK; 4500 EV_FREQUENT_CHECK;
2410 4501
2411 ++periodiccnt; 4502 ++periodiccnt;
2412 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4503 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2413 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4504 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
2414 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4505 ANHE_w (periodics [ev_active (w)]) = (WT)w;
2415 ANHE_at_cache (periodics [ev_active (w)]); 4506 ANHE_at_cache (periodics [ev_active (w)]);
2416 upheap (periodics, ev_active (w)); 4507 upheap (periodics, ev_active (w));
2417 4508
2418 EV_FREQUENT_CHECK; 4509 EV_FREQUENT_CHECK;
2419 4510
2420 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4511 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2421} 4512}
2422 4513
2423void noinline 4514ecb_noinline
4515void
2424ev_periodic_stop (EV_P_ ev_periodic *w) 4516ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
2425{ 4517{
2426 clear_pending (EV_A_ (W)w); 4518 clear_pending (EV_A_ (W)w);
2427 if (expect_false (!ev_is_active (w))) 4519 if (ecb_expect_false (!ev_is_active (w)))
2428 return; 4520 return;
2429 4521
2430 EV_FREQUENT_CHECK; 4522 EV_FREQUENT_CHECK;
2431 4523
2432 { 4524 {
… …
2434 4526
2435 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 4527 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2436 4528
2437 --periodiccnt; 4529 --periodiccnt;
2438 4530
2439 if (expect_true (active < periodiccnt + HEAP0)) 4531 if (ecb_expect_true (active < periodiccnt + HEAP0))
2440 { 4532 {
2441 periodics [active] = periodics [periodiccnt + HEAP0]; 4533 periodics [active] = periodics [periodiccnt + HEAP0];
2442 adjustheap (periodics, periodiccnt, active); 4534 adjustheap (periodics, periodiccnt, active);
2443 } 4535 }
2444 } 4536 }
2445 4537
4538 ev_stop (EV_A_ (W)w);
4539
2446 EV_FREQUENT_CHECK; 4540 EV_FREQUENT_CHECK;
2447
2448 ev_stop (EV_A_ (W)w);
2449} 4541}
2450 4542
2451void noinline 4543ecb_noinline
4544void
2452ev_periodic_again (EV_P_ ev_periodic *w) 4545ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
2453{ 4546{
2454 /* TODO: use adjustheap and recalculation */ 4547 /* TODO: use adjustheap and recalculation */
2455 ev_periodic_stop (EV_A_ w); 4548 ev_periodic_stop (EV_A_ w);
2456 ev_periodic_start (EV_A_ w); 4549 ev_periodic_start (EV_A_ w);
2457} 4550}
… …
2459 4552
2460#ifndef SA_RESTART 4553#ifndef SA_RESTART
2461# define SA_RESTART 0 4554# define SA_RESTART 0
2462#endif 4555#endif
2463 4556
2464void noinline 4557#if EV_SIGNAL_ENABLE
4558
4559ecb_noinline
4560void
2465ev_signal_start (EV_P_ ev_signal *w) 4561ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
2466{ 4562{
4563 if (ecb_expect_false (ev_is_active (w)))
4564 return;
4565
4566 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
4567
2467#if EV_MULTIPLICITY 4568#if EV_MULTIPLICITY
2468 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4569 assert (("libev: a signal must not be attached to two different loops",
2469#endif 4570 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2470 if (expect_false (ev_is_active (w)))
2471 return;
2472 4571
2473 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0)); 4572 signals [w->signum - 1].loop = EV_A;
2474 4573 ECB_MEMORY_FENCE_RELEASE;
2475 evpipe_init (EV_A); 4574#endif
2476 4575
2477 EV_FREQUENT_CHECK; 4576 EV_FREQUENT_CHECK;
2478 4577
4578#if EV_USE_SIGNALFD
4579 if (sigfd == -2)
2479 { 4580 {
2480#ifndef _WIN32 4581 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2481 sigset_t full, prev; 4582 if (sigfd < 0 && errno == EINVAL)
2482 sigfillset (&full); 4583 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2483 sigprocmask (SIG_SETMASK, &full, &prev);
2484#endif
2485 4584
2486 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); 4585 if (sigfd >= 0)
4586 {
4587 fd_intern (sigfd); /* doing it twice will not hurt */
2487 4588
2488#ifndef _WIN32 4589 sigemptyset (&sigfd_set);
2489 sigprocmask (SIG_SETMASK, &prev, 0); 4590
2490#endif 4591 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
4592 ev_set_priority (&sigfd_w, EV_MAXPRI);
4593 ev_io_start (EV_A_ &sigfd_w);
4594 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
4595 }
2491 } 4596 }
4597
4598 if (sigfd >= 0)
4599 {
4600 /* TODO: check .head */
4601 sigaddset (&sigfd_set, w->signum);
4602 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
4603
4604 signalfd (sigfd, &sigfd_set, 0);
4605 }
4606#endif
2492 4607
2493 ev_start (EV_A_ (W)w, 1); 4608 ev_start (EV_A_ (W)w, 1);
2494 wlist_add (&signals [w->signum - 1].head, (WL)w); 4609 wlist_add (&signals [w->signum - 1].head, (WL)w);
2495 4610
2496 if (!((WL)w)->next) 4611 if (!((WL)w)->next)
4612# if EV_USE_SIGNALFD
4613 if (sigfd < 0) /*TODO*/
4614# endif
2497 { 4615 {
2498#if _WIN32 4616# ifdef _WIN32
4617 evpipe_init (EV_A);
4618
2499 signal (w->signum, ev_sighandler); 4619 signal (w->signum, ev_sighandler);
2500#else 4620# else
2501 struct sigaction sa; 4621 struct sigaction sa;
4622
4623 evpipe_init (EV_A);
4624
2502 sa.sa_handler = ev_sighandler; 4625 sa.sa_handler = ev_sighandler;
2503 sigfillset (&sa.sa_mask); 4626 sigfillset (&sa.sa_mask);
2504 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 4627 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2505 sigaction (w->signum, &sa, 0); 4628 sigaction (w->signum, &sa, 0);
4629
4630 if (origflags & EVFLAG_NOSIGMASK)
4631 {
4632 sigemptyset (&sa.sa_mask);
4633 sigaddset (&sa.sa_mask, w->signum);
4634 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
4635 }
2506#endif 4636#endif
2507 } 4637 }
2508 4638
2509 EV_FREQUENT_CHECK; 4639 EV_FREQUENT_CHECK;
2510} 4640}
2511 4641
2512void noinline 4642ecb_noinline
4643void
2513ev_signal_stop (EV_P_ ev_signal *w) 4644ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
2514{ 4645{
2515 clear_pending (EV_A_ (W)w); 4646 clear_pending (EV_A_ (W)w);
2516 if (expect_false (!ev_is_active (w))) 4647 if (ecb_expect_false (!ev_is_active (w)))
2517 return; 4648 return;
2518 4649
2519 EV_FREQUENT_CHECK; 4650 EV_FREQUENT_CHECK;
2520 4651
2521 wlist_del (&signals [w->signum - 1].head, (WL)w); 4652 wlist_del (&signals [w->signum - 1].head, (WL)w);
2522 ev_stop (EV_A_ (W)w); 4653 ev_stop (EV_A_ (W)w);
2523 4654
2524 if (!signals [w->signum - 1].head) 4655 if (!signals [w->signum - 1].head)
4656 {
4657#if EV_MULTIPLICITY
4658 signals [w->signum - 1].loop = 0; /* unattach from signal */
4659#endif
4660#if EV_USE_SIGNALFD
4661 if (sigfd >= 0)
4662 {
4663 sigset_t ss;
4664
4665 sigemptyset (&ss);
4666 sigaddset (&ss, w->signum);
4667 sigdelset (&sigfd_set, w->signum);
4668
4669 signalfd (sigfd, &sigfd_set, 0);
4670 sigprocmask (SIG_UNBLOCK, &ss, 0);
4671 }
4672 else
4673#endif
2525 signal (w->signum, SIG_DFL); 4674 signal (w->signum, SIG_DFL);
4675 }
2526 4676
2527 EV_FREQUENT_CHECK; 4677 EV_FREQUENT_CHECK;
2528} 4678}
2529 4679
4680#endif
4681
4682#if EV_CHILD_ENABLE
4683
2530void 4684void
2531ev_child_start (EV_P_ ev_child *w) 4685ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
2532{ 4686{
2533#if EV_MULTIPLICITY 4687#if EV_MULTIPLICITY
2534 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4688 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2535#endif 4689#endif
2536 if (expect_false (ev_is_active (w))) 4690 if (ecb_expect_false (ev_is_active (w)))
2537 return; 4691 return;
2538 4692
2539 EV_FREQUENT_CHECK; 4693 EV_FREQUENT_CHECK;
2540 4694
2541 ev_start (EV_A_ (W)w, 1); 4695 ev_start (EV_A_ (W)w, 1);
2542 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4696 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2543 4697
2544 EV_FREQUENT_CHECK; 4698 EV_FREQUENT_CHECK;
2545} 4699}
2546 4700
2547void 4701void
2548ev_child_stop (EV_P_ ev_child *w) 4702ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
2549{ 4703{
2550 clear_pending (EV_A_ (W)w); 4704 clear_pending (EV_A_ (W)w);
2551 if (expect_false (!ev_is_active (w))) 4705 if (ecb_expect_false (!ev_is_active (w)))
2552 return; 4706 return;
2553 4707
2554 EV_FREQUENT_CHECK; 4708 EV_FREQUENT_CHECK;
2555 4709
2556 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4710 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2557 ev_stop (EV_A_ (W)w); 4711 ev_stop (EV_A_ (W)w);
2558 4712
2559 EV_FREQUENT_CHECK; 4713 EV_FREQUENT_CHECK;
2560} 4714}
4715
4716#endif
2561 4717
2562#if EV_STAT_ENABLE 4718#if EV_STAT_ENABLE
2563 4719
2564# ifdef _WIN32 4720# ifdef _WIN32
2565# undef lstat 4721# undef lstat
… …
2568 4724
2569#define DEF_STAT_INTERVAL 5.0074891 4725#define DEF_STAT_INTERVAL 5.0074891
2570#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4726#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2571#define MIN_STAT_INTERVAL 0.1074891 4727#define MIN_STAT_INTERVAL 0.1074891
2572 4728
2573static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4729ecb_noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2574 4730
2575#if EV_USE_INOTIFY 4731#if EV_USE_INOTIFY
2576# define EV_INOTIFY_BUFSIZE 8192
2577 4732
2578static void noinline 4733/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
4734# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
4735
4736ecb_noinline
4737static void
2579infy_add (EV_P_ ev_stat *w) 4738infy_add (EV_P_ ev_stat *w)
2580{ 4739{
2581 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); 4740 w->wd = inotify_add_watch (fs_fd, w->path,
4741 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4742 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4743 | IN_DONT_FOLLOW | IN_MASK_ADD);
2582 4744
2583 if (w->wd < 0) 4745 if (w->wd >= 0)
4746 {
4747 struct statfs sfs;
4748
4749 /* now local changes will be tracked by inotify, but remote changes won't */
4750 /* unless the filesystem is known to be local, we therefore still poll */
4751 /* also do poll on <2.6.25, but with normal frequency */
4752
4753 if (!fs_2625)
4754 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
4755 else if (!statfs (w->path, &sfs)
4756 && (sfs.f_type == 0x1373 /* devfs */
4757 || sfs.f_type == 0x4006 /* fat */
4758 || sfs.f_type == 0x4d44 /* msdos */
4759 || sfs.f_type == 0xEF53 /* ext2/3 */
4760 || sfs.f_type == 0x72b6 /* jffs2 */
4761 || sfs.f_type == 0x858458f6 /* ramfs */
4762 || sfs.f_type == 0x5346544e /* ntfs */
4763 || sfs.f_type == 0x3153464a /* jfs */
4764 || sfs.f_type == 0x9123683e /* btrfs */
4765 || sfs.f_type == 0x52654973 /* reiser3 */
4766 || sfs.f_type == 0x01021994 /* tmpfs */
4767 || sfs.f_type == 0x58465342 /* xfs */))
4768 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
4769 else
4770 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2584 { 4771 }
4772 else
4773 {
4774 /* can't use inotify, continue to stat */
2585 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4775 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2586 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2587 4776
2588 /* monitor some parent directory for speedup hints */ 4777 /* if path is not there, monitor some parent directory for speedup hints */
2589 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 4778 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2590 /* but an efficiency issue only */ 4779 /* but an efficiency issue only */
2591 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 4780 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2592 { 4781 {
2593 char path [4096]; 4782 char path [4096];
… …
2603 if (!pend || pend == path) 4792 if (!pend || pend == path)
2604 break; 4793 break;
2605 4794
2606 *pend = 0; 4795 *pend = 0;
2607 w->wd = inotify_add_watch (fs_fd, path, mask); 4796 w->wd = inotify_add_watch (fs_fd, path, mask);
2608 } 4797 }
2609 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 4798 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2610 } 4799 }
2611 } 4800 }
2612 4801
2613 if (w->wd >= 0) 4802 if (w->wd >= 0)
2614 {
2615 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4803 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2616 4804
2617 /* now local changes will be tracked by inotify, but remote changes won't */ 4805 /* now re-arm timer, if required */
2618 /* unless the filesystem it known to be local, we therefore still poll */ 4806 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2619 /* also do poll on <2.6.25, but with normal frequency */
2620 struct statfs sfs;
2621
2622 if (fs_2625 && !statfs (w->path, &sfs))
2623 if (sfs.f_type == 0x1373 /* devfs */
2624 || sfs.f_type == 0xEF53 /* ext2/3 */
2625 || sfs.f_type == 0x3153464a /* jfs */
2626 || sfs.f_type == 0x52654973 /* reiser3 */
2627 || sfs.f_type == 0x01021994 /* tempfs */
2628 || sfs.f_type == 0x58465342 /* xfs */)
2629 return;
2630
2631 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2632 ev_timer_again (EV_A_ &w->timer); 4807 ev_timer_again (EV_A_ &w->timer);
2633 } 4808 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2634} 4809}
2635 4810
2636static void noinline 4811ecb_noinline
4812static void
2637infy_del (EV_P_ ev_stat *w) 4813infy_del (EV_P_ ev_stat *w)
2638{ 4814{
2639 int slot; 4815 int slot;
2640 int wd = w->wd; 4816 int wd = w->wd;
2641 4817
2642 if (wd < 0) 4818 if (wd < 0)
2643 return; 4819 return;
2644 4820
2645 w->wd = -2; 4821 w->wd = -2;
2646 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 4822 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2647 wlist_del (&fs_hash [slot].head, (WL)w); 4823 wlist_del (&fs_hash [slot].head, (WL)w);
2648 4824
2649 /* remove this watcher, if others are watching it, they will rearm */ 4825 /* remove this watcher, if others are watching it, they will rearm */
2650 inotify_rm_watch (fs_fd, wd); 4826 inotify_rm_watch (fs_fd, wd);
2651} 4827}
2652 4828
2653static void noinline 4829ecb_noinline
4830static void
2654infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4831infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2655{ 4832{
2656 if (slot < 0) 4833 if (slot < 0)
2657 /* overflow, need to check for all hash slots */ 4834 /* overflow, need to check for all hash slots */
2658 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4835 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2659 infy_wd (EV_A_ slot, wd, ev); 4836 infy_wd (EV_A_ slot, wd, ev);
2660 else 4837 else
2661 { 4838 {
2662 WL w_; 4839 WL w_;
2663 4840
2664 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 4841 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2665 { 4842 {
2666 ev_stat *w = (ev_stat *)w_; 4843 ev_stat *w = (ev_stat *)w_;
2667 w_ = w_->next; /* lets us remove this watcher and all before it */ 4844 w_ = w_->next; /* lets us remove this watcher and all before it */
2668 4845
2669 if (w->wd == wd || wd == -1) 4846 if (w->wd == wd || wd == -1)
2670 { 4847 {
2671 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 4848 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2672 { 4849 {
2673 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4850 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2674 w->wd = -1; 4851 w->wd = -1;
2675 infy_add (EV_A_ w); /* re-add, no matter what */ 4852 infy_add (EV_A_ w); /* re-add, no matter what */
2676 } 4853 }
2677 4854
2678 stat_timer_cb (EV_A_ &w->timer, 0); 4855 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2683 4860
2684static void 4861static void
2685infy_cb (EV_P_ ev_io *w, int revents) 4862infy_cb (EV_P_ ev_io *w, int revents)
2686{ 4863{
2687 char buf [EV_INOTIFY_BUFSIZE]; 4864 char buf [EV_INOTIFY_BUFSIZE];
2688 struct inotify_event *ev = (struct inotify_event *)buf;
2689 int ofs; 4865 int ofs;
2690 int len = read (fs_fd, buf, sizeof (buf)); 4866 int len = read (fs_fd, buf, sizeof (buf));
2691 4867
2692 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 4868 for (ofs = 0; ofs < len; )
4869 {
4870 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2693 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4871 infy_wd (EV_A_ ev->wd, ev->wd, ev);
4872 ofs += sizeof (struct inotify_event) + ev->len;
4873 }
2694} 4874}
2695 4875
2696inline_size void 4876inline_size ecb_cold
4877void
2697check_2625 (EV_P) 4878ev_check_2625 (EV_P)
2698{ 4879{
2699 /* kernels < 2.6.25 are borked 4880 /* kernels < 2.6.25 are borked
2700 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4881 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2701 */ 4882 */
2702 struct utsname buf; 4883 if (ev_linux_version () < 0x020619)
2703 int major, minor, micro;
2704
2705 if (uname (&buf))
2706 return; 4884 return;
2707 4885
2708 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2709 return;
2710
2711 if (major < 2
2712 || (major == 2 && minor < 6)
2713 || (major == 2 && minor == 6 && micro < 25))
2714 return;
2715
2716 fs_2625 = 1; 4886 fs_2625 = 1;
4887}
4888
4889inline_size int
4890infy_newfd (void)
4891{
4892#if defined IN_CLOEXEC && defined IN_NONBLOCK
4893 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
4894 if (fd >= 0)
4895 return fd;
4896#endif
4897 return inotify_init ();
2717} 4898}
2718 4899
2719inline_size void 4900inline_size void
2720infy_init (EV_P) 4901infy_init (EV_P)
2721{ 4902{
2722 if (fs_fd != -2) 4903 if (fs_fd != -2)
2723 return; 4904 return;
2724 4905
2725 fs_fd = -1; 4906 fs_fd = -1;
2726 4907
2727 check_2625 (EV_A); 4908 ev_check_2625 (EV_A);
2728 4909
2729 fs_fd = inotify_init (); 4910 fs_fd = infy_newfd ();
2730 4911
2731 if (fs_fd >= 0) 4912 if (fs_fd >= 0)
2732 { 4913 {
4914 fd_intern (fs_fd);
2733 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 4915 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2734 ev_set_priority (&fs_w, EV_MAXPRI); 4916 ev_set_priority (&fs_w, EV_MAXPRI);
2735 ev_io_start (EV_A_ &fs_w); 4917 ev_io_start (EV_A_ &fs_w);
4918 ev_unref (EV_A);
2736 } 4919 }
2737} 4920}
2738 4921
2739inline_size void 4922inline_size void
2740infy_fork (EV_P) 4923infy_fork (EV_P)
… …
2742 int slot; 4925 int slot;
2743 4926
2744 if (fs_fd < 0) 4927 if (fs_fd < 0)
2745 return; 4928 return;
2746 4929
4930 ev_ref (EV_A);
4931 ev_io_stop (EV_A_ &fs_w);
2747 close (fs_fd); 4932 close (fs_fd);
2748 fs_fd = inotify_init (); 4933 fs_fd = infy_newfd ();
2749 4934
4935 if (fs_fd >= 0)
4936 {
4937 fd_intern (fs_fd);
4938 ev_io_set (&fs_w, fs_fd, EV_READ);
4939 ev_io_start (EV_A_ &fs_w);
4940 ev_unref (EV_A);
4941 }
4942
2750 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4943 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2751 { 4944 {
2752 WL w_ = fs_hash [slot].head; 4945 WL w_ = fs_hash [slot].head;
2753 fs_hash [slot].head = 0; 4946 fs_hash [slot].head = 0;
2754 4947
2755 while (w_) 4948 while (w_)
… …
2760 w->wd = -1; 4953 w->wd = -1;
2761 4954
2762 if (fs_fd >= 0) 4955 if (fs_fd >= 0)
2763 infy_add (EV_A_ w); /* re-add, no matter what */ 4956 infy_add (EV_A_ w); /* re-add, no matter what */
2764 else 4957 else
4958 {
4959 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
4960 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2765 ev_timer_again (EV_A_ &w->timer); 4961 ev_timer_again (EV_A_ &w->timer);
4962 if (ev_is_active (&w->timer)) ev_unref (EV_A);
4963 }
2766 } 4964 }
2767 } 4965 }
2768} 4966}
2769 4967
2770#endif 4968#endif
… …
2774#else 4972#else
2775# define EV_LSTAT(p,b) lstat (p, b) 4973# define EV_LSTAT(p,b) lstat (p, b)
2776#endif 4974#endif
2777 4975
2778void 4976void
2779ev_stat_stat (EV_P_ ev_stat *w) 4977ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
2780{ 4978{
2781 if (lstat (w->path, &w->attr) < 0) 4979 if (lstat (w->path, &w->attr) < 0)
2782 w->attr.st_nlink = 0; 4980 w->attr.st_nlink = 0;
2783 else if (!w->attr.st_nlink) 4981 else if (!w->attr.st_nlink)
2784 w->attr.st_nlink = 1; 4982 w->attr.st_nlink = 1;
2785} 4983}
2786 4984
2787static void noinline 4985ecb_noinline
4986static void
2788stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4987stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2789{ 4988{
2790 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4989 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2791 4990
2792 /* we copy this here each the time so that */ 4991 ev_statdata prev = w->attr;
2793 /* prev has the old value when the callback gets invoked */
2794 w->prev = w->attr;
2795 ev_stat_stat (EV_A_ w); 4992 ev_stat_stat (EV_A_ w);
2796 4993
2797 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 4994 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2798 if ( 4995 if (
2799 w->prev.st_dev != w->attr.st_dev 4996 prev.st_dev != w->attr.st_dev
2800 || w->prev.st_ino != w->attr.st_ino 4997 || prev.st_ino != w->attr.st_ino
2801 || w->prev.st_mode != w->attr.st_mode 4998 || prev.st_mode != w->attr.st_mode
2802 || w->prev.st_nlink != w->attr.st_nlink 4999 || prev.st_nlink != w->attr.st_nlink
2803 || w->prev.st_uid != w->attr.st_uid 5000 || prev.st_uid != w->attr.st_uid
2804 || w->prev.st_gid != w->attr.st_gid 5001 || prev.st_gid != w->attr.st_gid
2805 || w->prev.st_rdev != w->attr.st_rdev 5002 || prev.st_rdev != w->attr.st_rdev
2806 || w->prev.st_size != w->attr.st_size 5003 || prev.st_size != w->attr.st_size
2807 || w->prev.st_atime != w->attr.st_atime 5004 || prev.st_atime != w->attr.st_atime
2808 || w->prev.st_mtime != w->attr.st_mtime 5005 || prev.st_mtime != w->attr.st_mtime
2809 || w->prev.st_ctime != w->attr.st_ctime 5006 || prev.st_ctime != w->attr.st_ctime
2810 ) { 5007 ) {
5008 /* we only update w->prev on actual differences */
5009 /* in case we test more often than invoke the callback, */
5010 /* to ensure that prev is always different to attr */
5011 w->prev = prev;
5012
2811 #if EV_USE_INOTIFY 5013 #if EV_USE_INOTIFY
2812 if (fs_fd >= 0) 5014 if (fs_fd >= 0)
2813 { 5015 {
2814 infy_del (EV_A_ w); 5016 infy_del (EV_A_ w);
2815 infy_add (EV_A_ w); 5017 infy_add (EV_A_ w);
… …
2820 ev_feed_event (EV_A_ w, EV_STAT); 5022 ev_feed_event (EV_A_ w, EV_STAT);
2821 } 5023 }
2822} 5024}
2823 5025
2824void 5026void
2825ev_stat_start (EV_P_ ev_stat *w) 5027ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
2826{ 5028{
2827 if (expect_false (ev_is_active (w))) 5029 if (ecb_expect_false (ev_is_active (w)))
2828 return; 5030 return;
2829 5031
2830 ev_stat_stat (EV_A_ w); 5032 ev_stat_stat (EV_A_ w);
2831 5033
2832 if (w->interval < MIN_STAT_INTERVAL && w->interval) 5034 if (w->interval < MIN_STAT_INTERVAL && w->interval)
… …
2840 5042
2841 if (fs_fd >= 0) 5043 if (fs_fd >= 0)
2842 infy_add (EV_A_ w); 5044 infy_add (EV_A_ w);
2843 else 5045 else
2844#endif 5046#endif
5047 {
2845 ev_timer_again (EV_A_ &w->timer); 5048 ev_timer_again (EV_A_ &w->timer);
5049 ev_unref (EV_A);
5050 }
2846 5051
2847 ev_start (EV_A_ (W)w, 1); 5052 ev_start (EV_A_ (W)w, 1);
2848 5053
2849 EV_FREQUENT_CHECK; 5054 EV_FREQUENT_CHECK;
2850} 5055}
2851 5056
2852void 5057void
2853ev_stat_stop (EV_P_ ev_stat *w) 5058ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
2854{ 5059{
2855 clear_pending (EV_A_ (W)w); 5060 clear_pending (EV_A_ (W)w);
2856 if (expect_false (!ev_is_active (w))) 5061 if (ecb_expect_false (!ev_is_active (w)))
2857 return; 5062 return;
2858 5063
2859 EV_FREQUENT_CHECK; 5064 EV_FREQUENT_CHECK;
2860 5065
2861#if EV_USE_INOTIFY 5066#if EV_USE_INOTIFY
2862 infy_del (EV_A_ w); 5067 infy_del (EV_A_ w);
2863#endif 5068#endif
5069
5070 if (ev_is_active (&w->timer))
5071 {
5072 ev_ref (EV_A);
2864 ev_timer_stop (EV_A_ &w->timer); 5073 ev_timer_stop (EV_A_ &w->timer);
5074 }
2865 5075
2866 ev_stop (EV_A_ (W)w); 5076 ev_stop (EV_A_ (W)w);
2867 5077
2868 EV_FREQUENT_CHECK; 5078 EV_FREQUENT_CHECK;
2869} 5079}
2870#endif 5080#endif
2871 5081
2872#if EV_IDLE_ENABLE 5082#if EV_IDLE_ENABLE
2873void 5083void
2874ev_idle_start (EV_P_ ev_idle *w) 5084ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
2875{ 5085{
2876 if (expect_false (ev_is_active (w))) 5086 if (ecb_expect_false (ev_is_active (w)))
2877 return; 5087 return;
2878 5088
2879 pri_adjust (EV_A_ (W)w); 5089 pri_adjust (EV_A_ (W)w);
2880 5090
2881 EV_FREQUENT_CHECK; 5091 EV_FREQUENT_CHECK;
… …
2884 int active = ++idlecnt [ABSPRI (w)]; 5094 int active = ++idlecnt [ABSPRI (w)];
2885 5095
2886 ++idleall; 5096 ++idleall;
2887 ev_start (EV_A_ (W)w, active); 5097 ev_start (EV_A_ (W)w, active);
2888 5098
2889 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 5099 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
2890 idles [ABSPRI (w)][active - 1] = w; 5100 idles [ABSPRI (w)][active - 1] = w;
2891 } 5101 }
2892 5102
2893 EV_FREQUENT_CHECK; 5103 EV_FREQUENT_CHECK;
2894} 5104}
2895 5105
2896void 5106void
2897ev_idle_stop (EV_P_ ev_idle *w) 5107ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
2898{ 5108{
2899 clear_pending (EV_A_ (W)w); 5109 clear_pending (EV_A_ (W)w);
2900 if (expect_false (!ev_is_active (w))) 5110 if (ecb_expect_false (!ev_is_active (w)))
2901 return; 5111 return;
2902 5112
2903 EV_FREQUENT_CHECK; 5113 EV_FREQUENT_CHECK;
2904 5114
2905 { 5115 {
… …
2914 5124
2915 EV_FREQUENT_CHECK; 5125 EV_FREQUENT_CHECK;
2916} 5126}
2917#endif 5127#endif
2918 5128
5129#if EV_PREPARE_ENABLE
2919void 5130void
2920ev_prepare_start (EV_P_ ev_prepare *w) 5131ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
2921{ 5132{
2922 if (expect_false (ev_is_active (w))) 5133 if (ecb_expect_false (ev_is_active (w)))
2923 return; 5134 return;
2924 5135
2925 EV_FREQUENT_CHECK; 5136 EV_FREQUENT_CHECK;
2926 5137
2927 ev_start (EV_A_ (W)w, ++preparecnt); 5138 ev_start (EV_A_ (W)w, ++preparecnt);
2928 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 5139 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
2929 prepares [preparecnt - 1] = w; 5140 prepares [preparecnt - 1] = w;
2930 5141
2931 EV_FREQUENT_CHECK; 5142 EV_FREQUENT_CHECK;
2932} 5143}
2933 5144
2934void 5145void
2935ev_prepare_stop (EV_P_ ev_prepare *w) 5146ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
2936{ 5147{
2937 clear_pending (EV_A_ (W)w); 5148 clear_pending (EV_A_ (W)w);
2938 if (expect_false (!ev_is_active (w))) 5149 if (ecb_expect_false (!ev_is_active (w)))
2939 return; 5150 return;
2940 5151
2941 EV_FREQUENT_CHECK; 5152 EV_FREQUENT_CHECK;
2942 5153
2943 { 5154 {
… …
2949 5160
2950 ev_stop (EV_A_ (W)w); 5161 ev_stop (EV_A_ (W)w);
2951 5162
2952 EV_FREQUENT_CHECK; 5163 EV_FREQUENT_CHECK;
2953} 5164}
5165#endif
2954 5166
5167#if EV_CHECK_ENABLE
2955void 5168void
2956ev_check_start (EV_P_ ev_check *w) 5169ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
2957{ 5170{
2958 if (expect_false (ev_is_active (w))) 5171 if (ecb_expect_false (ev_is_active (w)))
2959 return; 5172 return;
2960 5173
2961 EV_FREQUENT_CHECK; 5174 EV_FREQUENT_CHECK;
2962 5175
2963 ev_start (EV_A_ (W)w, ++checkcnt); 5176 ev_start (EV_A_ (W)w, ++checkcnt);
2964 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 5177 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
2965 checks [checkcnt - 1] = w; 5178 checks [checkcnt - 1] = w;
2966 5179
2967 EV_FREQUENT_CHECK; 5180 EV_FREQUENT_CHECK;
2968} 5181}
2969 5182
2970void 5183void
2971ev_check_stop (EV_P_ ev_check *w) 5184ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
2972{ 5185{
2973 clear_pending (EV_A_ (W)w); 5186 clear_pending (EV_A_ (W)w);
2974 if (expect_false (!ev_is_active (w))) 5187 if (ecb_expect_false (!ev_is_active (w)))
2975 return; 5188 return;
2976 5189
2977 EV_FREQUENT_CHECK; 5190 EV_FREQUENT_CHECK;
2978 5191
2979 { 5192 {
… …
2985 5198
2986 ev_stop (EV_A_ (W)w); 5199 ev_stop (EV_A_ (W)w);
2987 5200
2988 EV_FREQUENT_CHECK; 5201 EV_FREQUENT_CHECK;
2989} 5202}
5203#endif
2990 5204
2991#if EV_EMBED_ENABLE 5205#if EV_EMBED_ENABLE
2992void noinline 5206ecb_noinline
5207void
2993ev_embed_sweep (EV_P_ ev_embed *w) 5208ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
2994{ 5209{
2995 ev_loop (w->other, EVLOOP_NONBLOCK); 5210 ev_run (w->other, EVRUN_NOWAIT);
2996} 5211}
2997 5212
2998static void 5213static void
2999embed_io_cb (EV_P_ ev_io *io, int revents) 5214embed_io_cb (EV_P_ ev_io *io, int revents)
3000{ 5215{
3001 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 5216 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3002 5217
3003 if (ev_cb (w)) 5218 if (ev_cb (w))
3004 ev_feed_event (EV_A_ (W)w, EV_EMBED); 5219 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3005 else 5220 else
3006 ev_loop (w->other, EVLOOP_NONBLOCK); 5221 ev_run (w->other, EVRUN_NOWAIT);
3007} 5222}
3008 5223
3009static void 5224static void
3010embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 5225embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3011{ 5226{
3012 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 5227 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
3013 5228
3014 { 5229 {
3015 struct ev_loop *loop = w->other; 5230 EV_P = w->other;
3016 5231
3017 while (fdchangecnt) 5232 while (fdchangecnt)
3018 { 5233 {
3019 fd_reify (EV_A); 5234 fd_reify (EV_A);
3020 ev_loop (EV_A_ EVLOOP_NONBLOCK); 5235 ev_run (EV_A_ EVRUN_NOWAIT);
3021 } 5236 }
3022 } 5237 }
3023} 5238}
3024 5239
5240#if EV_FORK_ENABLE
3025static void 5241static void
3026embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) 5242embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
3027{ 5243{
3028 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 5244 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3029 5245
3030 ev_embed_stop (EV_A_ w); 5246 ev_embed_stop (EV_A_ w);
3031 5247
3032 { 5248 {
3033 struct ev_loop *loop = w->other; 5249 EV_P = w->other;
3034 5250
3035 ev_loop_fork (EV_A); 5251 ev_loop_fork (EV_A);
3036 ev_loop (EV_A_ EVLOOP_NONBLOCK); 5252 ev_run (EV_A_ EVRUN_NOWAIT);
3037 } 5253 }
3038 5254
3039 ev_embed_start (EV_A_ w); 5255 ev_embed_start (EV_A_ w);
3040} 5256}
5257#endif
3041 5258
3042#if 0 5259#if 0
3043static void 5260static void
3044embed_idle_cb (EV_P_ ev_idle *idle, int revents) 5261embed_idle_cb (EV_P_ ev_idle *idle, int revents)
3045{ 5262{
3046 ev_idle_stop (EV_A_ idle); 5263 ev_idle_stop (EV_A_ idle);
3047} 5264}
3048#endif 5265#endif
3049 5266
3050void 5267void
3051ev_embed_start (EV_P_ ev_embed *w) 5268ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
3052{ 5269{
3053 if (expect_false (ev_is_active (w))) 5270 if (ecb_expect_false (ev_is_active (w)))
3054 return; 5271 return;
3055 5272
3056 { 5273 {
3057 struct ev_loop *loop = w->other; 5274 EV_P = w->other;
3058 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 5275 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
3059 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 5276 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3060 } 5277 }
3061 5278
3062 EV_FREQUENT_CHECK; 5279 EV_FREQUENT_CHECK;
… …
3066 5283
3067 ev_prepare_init (&w->prepare, embed_prepare_cb); 5284 ev_prepare_init (&w->prepare, embed_prepare_cb);
3068 ev_set_priority (&w->prepare, EV_MINPRI); 5285 ev_set_priority (&w->prepare, EV_MINPRI);
3069 ev_prepare_start (EV_A_ &w->prepare); 5286 ev_prepare_start (EV_A_ &w->prepare);
3070 5287
5288#if EV_FORK_ENABLE
3071 ev_fork_init (&w->fork, embed_fork_cb); 5289 ev_fork_init (&w->fork, embed_fork_cb);
3072 ev_fork_start (EV_A_ &w->fork); 5290 ev_fork_start (EV_A_ &w->fork);
5291#endif
3073 5292
3074 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 5293 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
3075 5294
3076 ev_start (EV_A_ (W)w, 1); 5295 ev_start (EV_A_ (W)w, 1);
3077 5296
3078 EV_FREQUENT_CHECK; 5297 EV_FREQUENT_CHECK;
3079} 5298}
3080 5299
3081void 5300void
3082ev_embed_stop (EV_P_ ev_embed *w) 5301ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
3083{ 5302{
3084 clear_pending (EV_A_ (W)w); 5303 clear_pending (EV_A_ (W)w);
3085 if (expect_false (!ev_is_active (w))) 5304 if (ecb_expect_false (!ev_is_active (w)))
3086 return; 5305 return;
3087 5306
3088 EV_FREQUENT_CHECK; 5307 EV_FREQUENT_CHECK;
3089 5308
3090 ev_io_stop (EV_A_ &w->io); 5309 ev_io_stop (EV_A_ &w->io);
3091 ev_prepare_stop (EV_A_ &w->prepare); 5310 ev_prepare_stop (EV_A_ &w->prepare);
5311#if EV_FORK_ENABLE
3092 ev_fork_stop (EV_A_ &w->fork); 5312 ev_fork_stop (EV_A_ &w->fork);
5313#endif
5314
5315 ev_stop (EV_A_ (W)w);
3093 5316
3094 EV_FREQUENT_CHECK; 5317 EV_FREQUENT_CHECK;
3095} 5318}
3096#endif 5319#endif
3097 5320
3098#if EV_FORK_ENABLE 5321#if EV_FORK_ENABLE
3099void 5322void
3100ev_fork_start (EV_P_ ev_fork *w) 5323ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
3101{ 5324{
3102 if (expect_false (ev_is_active (w))) 5325 if (ecb_expect_false (ev_is_active (w)))
3103 return; 5326 return;
3104 5327
3105 EV_FREQUENT_CHECK; 5328 EV_FREQUENT_CHECK;
3106 5329
3107 ev_start (EV_A_ (W)w, ++forkcnt); 5330 ev_start (EV_A_ (W)w, ++forkcnt);
3108 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 5331 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
3109 forks [forkcnt - 1] = w; 5332 forks [forkcnt - 1] = w;
3110 5333
3111 EV_FREQUENT_CHECK; 5334 EV_FREQUENT_CHECK;
3112} 5335}
3113 5336
3114void 5337void
3115ev_fork_stop (EV_P_ ev_fork *w) 5338ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
3116{ 5339{
3117 clear_pending (EV_A_ (W)w); 5340 clear_pending (EV_A_ (W)w);
3118 if (expect_false (!ev_is_active (w))) 5341 if (ecb_expect_false (!ev_is_active (w)))
3119 return; 5342 return;
3120 5343
3121 EV_FREQUENT_CHECK; 5344 EV_FREQUENT_CHECK;
3122 5345
3123 { 5346 {
… …
3131 5354
3132 EV_FREQUENT_CHECK; 5355 EV_FREQUENT_CHECK;
3133} 5356}
3134#endif 5357#endif
3135 5358
5359#if EV_CLEANUP_ENABLE
5360void
5361ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
5362{
5363 if (ecb_expect_false (ev_is_active (w)))
5364 return;
5365
5366 EV_FREQUENT_CHECK;
5367
5368 ev_start (EV_A_ (W)w, ++cleanupcnt);
5369 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
5370 cleanups [cleanupcnt - 1] = w;
5371
5372 /* cleanup watchers should never keep a refcount on the loop */
5373 ev_unref (EV_A);
5374 EV_FREQUENT_CHECK;
5375}
5376
5377void
5378ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
5379{
5380 clear_pending (EV_A_ (W)w);
5381 if (ecb_expect_false (!ev_is_active (w)))
5382 return;
5383
5384 EV_FREQUENT_CHECK;
5385 ev_ref (EV_A);
5386
5387 {
5388 int active = ev_active (w);
5389
5390 cleanups [active - 1] = cleanups [--cleanupcnt];
5391 ev_active (cleanups [active - 1]) = active;
5392 }
5393
5394 ev_stop (EV_A_ (W)w);
5395
5396 EV_FREQUENT_CHECK;
5397}
5398#endif
5399
3136#if EV_ASYNC_ENABLE 5400#if EV_ASYNC_ENABLE
3137void 5401void
3138ev_async_start (EV_P_ ev_async *w) 5402ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
3139{ 5403{
3140 if (expect_false (ev_is_active (w))) 5404 if (ecb_expect_false (ev_is_active (w)))
3141 return; 5405 return;
3142 5406
5407 w->sent = 0;
5408
3143 evpipe_init (EV_A); 5409 evpipe_init (EV_A);
3144 5410
3145 EV_FREQUENT_CHECK; 5411 EV_FREQUENT_CHECK;
3146 5412
3147 ev_start (EV_A_ (W)w, ++asynccnt); 5413 ev_start (EV_A_ (W)w, ++asynccnt);
3148 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 5414 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
3149 asyncs [asynccnt - 1] = w; 5415 asyncs [asynccnt - 1] = w;
3150 5416
3151 EV_FREQUENT_CHECK; 5417 EV_FREQUENT_CHECK;
3152} 5418}
3153 5419
3154void 5420void
3155ev_async_stop (EV_P_ ev_async *w) 5421ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
3156{ 5422{
3157 clear_pending (EV_A_ (W)w); 5423 clear_pending (EV_A_ (W)w);
3158 if (expect_false (!ev_is_active (w))) 5424 if (ecb_expect_false (!ev_is_active (w)))
3159 return; 5425 return;
3160 5426
3161 EV_FREQUENT_CHECK; 5427 EV_FREQUENT_CHECK;
3162 5428
3163 { 5429 {
… …
3171 5437
3172 EV_FREQUENT_CHECK; 5438 EV_FREQUENT_CHECK;
3173} 5439}
3174 5440
3175void 5441void
3176ev_async_send (EV_P_ ev_async *w) 5442ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
3177{ 5443{
3178 w->sent = 1; 5444 w->sent = 1;
3179 evpipe_write (EV_A_ &gotasync); 5445 evpipe_write (EV_A_ &async_pending);
3180} 5446}
3181#endif 5447#endif
3182 5448
3183/*****************************************************************************/ 5449/*****************************************************************************/
3184 5450
… …
3218 5484
3219 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5485 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3220} 5486}
3221 5487
3222void 5488void
3223ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 5489ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
3224{ 5490{
3225 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5491 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3226
3227 if (expect_false (!once))
3228 {
3229 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
3230 return;
3231 }
3232 5492
3233 once->cb = cb; 5493 once->cb = cb;
3234 once->arg = arg; 5494 once->arg = arg;
3235 5495
3236 ev_init (&once->io, once_cb_io); 5496 ev_init (&once->io, once_cb_io);
… …
3249} 5509}
3250 5510
3251/*****************************************************************************/ 5511/*****************************************************************************/
3252 5512
3253#if EV_WALK_ENABLE 5513#if EV_WALK_ENABLE
5514ecb_cold
3254void 5515void
3255ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 5516ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
3256{ 5517{
3257 int i, j; 5518 int i, j;
3258 ev_watcher_list *wl, *wn; 5519 ev_watcher_list *wl, *wn;
3259 5520
3260 if (types & (EV_IO | EV_EMBED)) 5521 if (types & (EV_IO | EV_EMBED))
… …
3303 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 5564 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3304#endif 5565#endif
3305 5566
3306#if EV_IDLE_ENABLE 5567#if EV_IDLE_ENABLE
3307 if (types & EV_IDLE) 5568 if (types & EV_IDLE)
3308 for (j = NUMPRI; i--; ) 5569 for (j = NUMPRI; j--; )
3309 for (i = idlecnt [j]; i--; ) 5570 for (i = idlecnt [j]; i--; )
3310 cb (EV_A_ EV_IDLE, idles [j][i]); 5571 cb (EV_A_ EV_IDLE, idles [j][i]);
3311#endif 5572#endif
3312 5573
3313#if EV_FORK_ENABLE 5574#if EV_FORK_ENABLE
… …
3321 if (types & EV_ASYNC) 5582 if (types & EV_ASYNC)
3322 for (i = asynccnt; i--; ) 5583 for (i = asynccnt; i--; )
3323 cb (EV_A_ EV_ASYNC, asyncs [i]); 5584 cb (EV_A_ EV_ASYNC, asyncs [i]);
3324#endif 5585#endif
3325 5586
5587#if EV_PREPARE_ENABLE
3326 if (types & EV_PREPARE) 5588 if (types & EV_PREPARE)
3327 for (i = preparecnt; i--; ) 5589 for (i = preparecnt; i--; )
3328#if EV_EMBED_ENABLE 5590# if EV_EMBED_ENABLE
3329 if (ev_cb (prepares [i]) != embed_prepare_cb) 5591 if (ev_cb (prepares [i]) != embed_prepare_cb)
3330#endif 5592# endif
3331 cb (EV_A_ EV_PREPARE, prepares [i]); 5593 cb (EV_A_ EV_PREPARE, prepares [i]);
5594#endif
3332 5595
5596#if EV_CHECK_ENABLE
3333 if (types & EV_CHECK) 5597 if (types & EV_CHECK)
3334 for (i = checkcnt; i--; ) 5598 for (i = checkcnt; i--; )
3335 cb (EV_A_ EV_CHECK, checks [i]); 5599 cb (EV_A_ EV_CHECK, checks [i]);
5600#endif
3336 5601
5602#if EV_SIGNAL_ENABLE
3337 if (types & EV_SIGNAL) 5603 if (types & EV_SIGNAL)
3338 for (i = 0; i < signalmax; ++i) 5604 for (i = 0; i < EV_NSIG - 1; ++i)
3339 for (wl = signals [i].head; wl; ) 5605 for (wl = signals [i].head; wl; )
3340 { 5606 {
3341 wn = wl->next; 5607 wn = wl->next;
3342 cb (EV_A_ EV_SIGNAL, wl); 5608 cb (EV_A_ EV_SIGNAL, wl);
3343 wl = wn; 5609 wl = wn;
3344 } 5610 }
5611#endif
3345 5612
5613#if EV_CHILD_ENABLE
3346 if (types & EV_CHILD) 5614 if (types & EV_CHILD)
3347 for (i = EV_PID_HASHSIZE; i--; ) 5615 for (i = (EV_PID_HASHSIZE); i--; )
3348 for (wl = childs [i]; wl; ) 5616 for (wl = childs [i]; wl; )
3349 { 5617 {
3350 wn = wl->next; 5618 wn = wl->next;
3351 cb (EV_A_ EV_CHILD, wl); 5619 cb (EV_A_ EV_CHILD, wl);
3352 wl = wn; 5620 wl = wn;
3353 } 5621 }
5622#endif
3354/* EV_STAT 0x00001000 /* stat data changed */ 5623/* EV_STAT 0x00001000 /* stat data changed */
3355/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 5624/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3356} 5625}
3357#endif 5626#endif
3358 5627
3359#if EV_MULTIPLICITY 5628#if EV_MULTIPLICITY
3360 #include "ev_wrap.h" 5629 #include "ev_wrap.h"
3361#endif 5630#endif
3362 5631
3363#ifdef __cplusplus
3364}
3365#endif
3366

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