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

Comparing libev/ev.c (file contents):
Revision 1.293 by root, Mon Jun 29 18:46:52 2009 UTC vs.
Revision 1.536 by root, Wed Aug 10 16:50:05 2022 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 40#pragma clang diagnostic ignored "-Wunused-value"
41extern "C" { 41#pragma clang diagnostic ignored "-Wcomment"
42#endif 42#pragma clang diagnostic ignored "-Wextern-initializer"
43 43
44/* this big block deduces configuration from config.h */ 44/* this big block deduces configuration from config.h */
45#ifndef EV_STANDALONE 45#ifndef EV_STANDALONE
46# ifdef EV_CONFIG_H 46# ifdef EV_CONFIG_H
47# include EV_CONFIG_H 47# include EV_CONFIG_H
48# else 48# else
49# include "config.h" 49# include "config.h"
50# endif
51
52# if HAVE_FLOOR
53# ifndef EV_USE_FLOOR
54# define EV_USE_FLOOR 1
55# endif
50# endif 56# endif
51 57
52# if HAVE_CLOCK_SYSCALL 58# if HAVE_CLOCK_SYSCALL
53# ifndef EV_USE_CLOCK_SYSCALL 59# ifndef EV_USE_CLOCK_SYSCALL
54# define EV_USE_CLOCK_SYSCALL 1 60# define EV_USE_CLOCK_SYSCALL 1
… …
57# endif 63# endif
58# ifndef EV_USE_MONOTONIC 64# ifndef EV_USE_MONOTONIC
59# define EV_USE_MONOTONIC 1 65# define EV_USE_MONOTONIC 1
60# endif 66# endif
61# endif 67# endif
62# elif !defined(EV_USE_CLOCK_SYSCALL) 68# elif !defined EV_USE_CLOCK_SYSCALL
63# define EV_USE_CLOCK_SYSCALL 0 69# define EV_USE_CLOCK_SYSCALL 0
64# endif 70# endif
65 71
66# if HAVE_CLOCK_GETTIME 72# if HAVE_CLOCK_GETTIME
67# ifndef EV_USE_MONOTONIC 73# ifndef EV_USE_MONOTONIC
… …
77# ifndef EV_USE_REALTIME 83# ifndef EV_USE_REALTIME
78# define EV_USE_REALTIME 0 84# define EV_USE_REALTIME 0
79# endif 85# endif
80# endif 86# endif
81 87
88# if HAVE_NANOSLEEP
82# ifndef EV_USE_NANOSLEEP 89# ifndef EV_USE_NANOSLEEP
83# if HAVE_NANOSLEEP
84# define EV_USE_NANOSLEEP 1 90# define EV_USE_NANOSLEEP EV_FEATURE_OS
91# endif
85# else 92# else
93# undef EV_USE_NANOSLEEP
86# define EV_USE_NANOSLEEP 0 94# define EV_USE_NANOSLEEP 0
95# endif
96
97# if HAVE_SELECT && HAVE_SYS_SELECT_H
98# ifndef EV_USE_SELECT
99# define EV_USE_SELECT EV_FEATURE_BACKENDS
87# endif 100# endif
101# else
102# undef EV_USE_SELECT
103# define EV_USE_SELECT 0
88# endif 104# endif
89 105
106# if HAVE_POLL && HAVE_POLL_H
90# ifndef EV_USE_SELECT 107# ifndef EV_USE_POLL
91# if HAVE_SELECT && HAVE_SYS_SELECT_H 108# define EV_USE_POLL EV_FEATURE_BACKENDS
92# define EV_USE_SELECT 1
93# else
94# define EV_USE_SELECT 0
95# endif 109# endif
96# endif
97
98# ifndef EV_USE_POLL
99# if HAVE_POLL && HAVE_POLL_H
100# define EV_USE_POLL 1
101# else 110# else
111# undef EV_USE_POLL
102# define EV_USE_POLL 0 112# define EV_USE_POLL 0
103# endif
104# endif 113# endif
105 114
106# ifndef EV_USE_EPOLL
107# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 115# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
108# define EV_USE_EPOLL 1 116# ifndef EV_USE_EPOLL
109# else 117# define EV_USE_EPOLL EV_FEATURE_BACKENDS
110# define EV_USE_EPOLL 0
111# endif 118# endif
119# else
120# undef EV_USE_EPOLL
121# define EV_USE_EPOLL 0
112# endif 122# endif
113 123
114# ifndef EV_USE_KQUEUE 124# if HAVE_LINUX_AIO_ABI_H
115# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 125# ifndef EV_USE_LINUXAIO
116# define EV_USE_KQUEUE 1 126# define EV_USE_LINUXAIO 0 /* was: EV_FEATURE_BACKENDS, always off by default */
117# else
118# define EV_USE_KQUEUE 0
119# endif 127# endif
128# else
129# undef EV_USE_LINUXAIO
130# define EV_USE_LINUXAIO 0
120# endif 131# endif
121 132
133# if HAVE_LINUX_FS_H && HAVE_SYS_TIMERFD_H && HAVE_KERNEL_RWF_T
122# ifndef EV_USE_PORT 134# ifndef EV_USE_IOURING
123# if HAVE_PORT_H && HAVE_PORT_CREATE 135# define EV_USE_IOURING EV_FEATURE_BACKENDS
124# define EV_USE_PORT 1
125# else
126# define EV_USE_PORT 0
127# endif 136# 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 137# else
138# undef EV_USE_IOURING
134# define EV_USE_INOTIFY 0 139# 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 140# endif
145 141
142# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
143# ifndef EV_USE_KQUEUE
144# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
145# endif
146# else
147# undef EV_USE_KQUEUE
148# define EV_USE_KQUEUE 0
146#endif 149# endif
150
151# if HAVE_PORT_H && HAVE_PORT_CREATE
152# ifndef EV_USE_PORT
153# define EV_USE_PORT EV_FEATURE_BACKENDS
154# endif
155# else
156# undef EV_USE_PORT
157# define EV_USE_PORT 0
158# endif
147 159
148#include <math.h> 160# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
161# ifndef EV_USE_INOTIFY
162# define EV_USE_INOTIFY EV_FEATURE_OS
163# endif
164# else
165# undef EV_USE_INOTIFY
166# define EV_USE_INOTIFY 0
167# endif
168
169# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
170# ifndef EV_USE_SIGNALFD
171# define EV_USE_SIGNALFD EV_FEATURE_OS
172# endif
173# else
174# undef EV_USE_SIGNALFD
175# define EV_USE_SIGNALFD 0
176# endif
177
178# if HAVE_EVENTFD
179# ifndef EV_USE_EVENTFD
180# define EV_USE_EVENTFD EV_FEATURE_OS
181# endif
182# else
183# undef EV_USE_EVENTFD
184# define EV_USE_EVENTFD 0
185# endif
186
187# if HAVE_SYS_TIMERFD_H
188# ifndef EV_USE_TIMERFD
189# define EV_USE_TIMERFD EV_FEATURE_OS
190# endif
191# else
192# undef EV_USE_TIMERFD
193# define EV_USE_TIMERFD 0
194# endif
195
196#endif
197
198/* OS X, in its infinite idiocy, actually HARDCODES
199 * a limit of 1024 into their select. Where people have brains,
200 * OS X engineers apparently have a vacuum. Or maybe they were
201 * ordered to have a vacuum, or they do anything for money.
202 * This might help. Or not.
203 * Note that this must be defined early, as other include files
204 * will rely on this define as well.
205 */
206#define _DARWIN_UNLIMITED_SELECT 1
207
149#include <stdlib.h> 208#include <stdlib.h>
209#include <string.h>
150#include <fcntl.h> 210#include <fcntl.h>
151#include <stddef.h> 211#include <stddef.h>
152 212
153#include <stdio.h> 213#include <stdio.h>
154 214
155#include <assert.h> 215#include <assert.h>
156#include <errno.h> 216#include <errno.h>
157#include <sys/types.h> 217#include <sys/types.h>
158#include <time.h> 218#include <time.h>
219#include <limits.h>
159 220
160#include <signal.h> 221#include <signal.h>
161 222
162#ifdef EV_H 223#ifdef EV_H
163# include EV_H 224# include EV_H
164#else 225#else
165# include "ev.h" 226# include "ev.h"
227#endif
228
229#if EV_NO_THREADS
230# undef EV_NO_SMP
231# define EV_NO_SMP 1
232# undef ECB_NO_THREADS
233# define ECB_NO_THREADS 1
234#endif
235#if EV_NO_SMP
236# undef EV_NO_SMP
237# define ECB_NO_SMP 1
166#endif 238#endif
167 239
168#ifndef _WIN32 240#ifndef _WIN32
169# include <sys/time.h> 241# include <sys/time.h>
170# include <sys/wait.h> 242# include <sys/wait.h>
171# include <unistd.h> 243# include <unistd.h>
172#else 244#else
173# include <io.h> 245# include <io.h>
174# define WIN32_LEAN_AND_MEAN 246# define WIN32_LEAN_AND_MEAN
247# include <winsock2.h>
175# include <windows.h> 248# include <windows.h>
176# ifndef EV_SELECT_IS_WINSOCKET 249# ifndef EV_SELECT_IS_WINSOCKET
177# define EV_SELECT_IS_WINSOCKET 1 250# define EV_SELECT_IS_WINSOCKET 1
178# endif 251# endif
252# undef EV_AVOID_STDIO
179#endif 253#endif
180 254
181/* this block tries to deduce configuration from header-defined symbols and defaults */ 255/* this block tries to deduce configuration from header-defined symbols and defaults */
182 256
257/* try to deduce the maximum number of signals on this platform */
258#if defined EV_NSIG
259/* use what's provided */
260#elif defined NSIG
261# define EV_NSIG (NSIG)
262#elif defined _NSIG
263# define EV_NSIG (_NSIG)
264#elif defined SIGMAX
265# define EV_NSIG (SIGMAX+1)
266#elif defined SIG_MAX
267# define EV_NSIG (SIG_MAX+1)
268#elif defined _SIG_MAX
269# define EV_NSIG (_SIG_MAX+1)
270#elif defined MAXSIG
271# define EV_NSIG (MAXSIG+1)
272#elif defined MAX_SIG
273# define EV_NSIG (MAX_SIG+1)
274#elif defined SIGARRAYSIZE
275# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
276#elif defined _sys_nsig
277# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
278#else
279# define EV_NSIG (8 * sizeof (sigset_t) + 1)
280#endif
281
282#ifndef EV_USE_FLOOR
283# define EV_USE_FLOOR 0
284#endif
285
183#ifndef EV_USE_CLOCK_SYSCALL 286#ifndef EV_USE_CLOCK_SYSCALL
184# if __linux && __GLIBC__ >= 2 287# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
185# define EV_USE_CLOCK_SYSCALL 1 288# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
186# else 289# else
187# define EV_USE_CLOCK_SYSCALL 0 290# define EV_USE_CLOCK_SYSCALL 0
188# endif 291# endif
189#endif 292#endif
190 293
294#if !(_POSIX_TIMERS > 0)
295# ifndef EV_USE_MONOTONIC
296# define EV_USE_MONOTONIC 0
297# endif
298# ifndef EV_USE_REALTIME
299# define EV_USE_REALTIME 0
300# endif
301#endif
302
191#ifndef EV_USE_MONOTONIC 303#ifndef EV_USE_MONOTONIC
192# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 304# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
193# define EV_USE_MONOTONIC 1 305# define EV_USE_MONOTONIC EV_FEATURE_OS
194# else 306# else
195# define EV_USE_MONOTONIC 0 307# define EV_USE_MONOTONIC 0
196# endif 308# endif
197#endif 309#endif
198 310
… …
200# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 312# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
201#endif 313#endif
202 314
203#ifndef EV_USE_NANOSLEEP 315#ifndef EV_USE_NANOSLEEP
204# if _POSIX_C_SOURCE >= 199309L 316# if _POSIX_C_SOURCE >= 199309L
205# define EV_USE_NANOSLEEP 1 317# define EV_USE_NANOSLEEP EV_FEATURE_OS
206# else 318# else
207# define EV_USE_NANOSLEEP 0 319# define EV_USE_NANOSLEEP 0
208# endif 320# endif
209#endif 321#endif
210 322
211#ifndef EV_USE_SELECT 323#ifndef EV_USE_SELECT
212# define EV_USE_SELECT 1 324# define EV_USE_SELECT EV_FEATURE_BACKENDS
213#endif 325#endif
214 326
215#ifndef EV_USE_POLL 327#ifndef EV_USE_POLL
216# ifdef _WIN32 328# ifdef _WIN32
217# define EV_USE_POLL 0 329# define EV_USE_POLL 0
218# else 330# else
219# define EV_USE_POLL 1 331# define EV_USE_POLL EV_FEATURE_BACKENDS
220# endif 332# endif
221#endif 333#endif
222 334
223#ifndef EV_USE_EPOLL 335#ifndef EV_USE_EPOLL
224# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 336# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
225# define EV_USE_EPOLL 1 337# define EV_USE_EPOLL EV_FEATURE_BACKENDS
226# else 338# else
227# define EV_USE_EPOLL 0 339# define EV_USE_EPOLL 0
228# endif 340# endif
229#endif 341#endif
230 342
… …
234 346
235#ifndef EV_USE_PORT 347#ifndef EV_USE_PORT
236# define EV_USE_PORT 0 348# define EV_USE_PORT 0
237#endif 349#endif
238 350
351#ifndef EV_USE_LINUXAIO
352# if __linux /* libev currently assumes linux/aio_abi.h is always available on linux */
353# define EV_USE_LINUXAIO 0 /* was: 1, always off by default */
354# else
355# define EV_USE_LINUXAIO 0
356# endif
357#endif
358
359#ifndef EV_USE_IOURING
360# if __linux /* later checks might disable again */
361# define EV_USE_IOURING 1
362# else
363# define EV_USE_IOURING 0
364# endif
365#endif
366
239#ifndef EV_USE_INOTIFY 367#ifndef EV_USE_INOTIFY
240# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 368# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
241# define EV_USE_INOTIFY 1 369# define EV_USE_INOTIFY EV_FEATURE_OS
242# else 370# else
243# define EV_USE_INOTIFY 0 371# define EV_USE_INOTIFY 0
244# endif 372# endif
245#endif 373#endif
246 374
247#ifndef EV_PID_HASHSIZE 375#ifndef EV_PID_HASHSIZE
248# if EV_MINIMAL 376# 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 377#endif
254 378
255#ifndef EV_INOTIFY_HASHSIZE 379#ifndef EV_INOTIFY_HASHSIZE
256# if EV_MINIMAL 380# 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 381#endif
262 382
263#ifndef EV_USE_EVENTFD 383#ifndef EV_USE_EVENTFD
264# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 384# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
265# define EV_USE_EVENTFD 1 385# define EV_USE_EVENTFD EV_FEATURE_OS
266# else 386# else
267# define EV_USE_EVENTFD 0 387# define EV_USE_EVENTFD 0
388# endif
389#endif
390
391#ifndef EV_USE_SIGNALFD
392# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
393# define EV_USE_SIGNALFD EV_FEATURE_OS
394# else
395# define EV_USE_SIGNALFD 0
396# endif
397#endif
398
399#ifndef EV_USE_TIMERFD
400# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 8))
401# define EV_USE_TIMERFD EV_FEATURE_OS
402# else
403# define EV_USE_TIMERFD 0
268# endif 404# endif
269#endif 405#endif
270 406
271#if 0 /* debugging */ 407#if 0 /* debugging */
272# define EV_VERIFY 3 408# define EV_VERIFY 3
273# define EV_USE_4HEAP 1 409# define EV_USE_4HEAP 1
274# define EV_HEAP_CACHE_AT 1 410# define EV_HEAP_CACHE_AT 1
275#endif 411#endif
276 412
277#ifndef EV_VERIFY 413#ifndef EV_VERIFY
278# define EV_VERIFY !EV_MINIMAL 414# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
279#endif 415#endif
280 416
281#ifndef EV_USE_4HEAP 417#ifndef EV_USE_4HEAP
282# define EV_USE_4HEAP !EV_MINIMAL 418# define EV_USE_4HEAP EV_FEATURE_DATA
283#endif 419#endif
284 420
285#ifndef EV_HEAP_CACHE_AT 421#ifndef EV_HEAP_CACHE_AT
286# define EV_HEAP_CACHE_AT !EV_MINIMAL 422# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
423#endif
424
425#ifdef __ANDROID__
426/* supposedly, android doesn't typedef fd_mask */
427# undef EV_USE_SELECT
428# define EV_USE_SELECT 0
429/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
430# undef EV_USE_CLOCK_SYSCALL
431# define EV_USE_CLOCK_SYSCALL 0
432#endif
433
434/* aix's poll.h seems to cause lots of trouble */
435#ifdef _AIX
436/* AIX has a completely broken poll.h header */
437# undef EV_USE_POLL
438# define EV_USE_POLL 0
287#endif 439#endif
288 440
289/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 441/* 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. */ 442/* which makes programs even slower. might work on other unices, too. */
291#if EV_USE_CLOCK_SYSCALL 443#if EV_USE_CLOCK_SYSCALL
292# include <syscall.h> 444# include <sys/syscall.h>
293# ifdef SYS_clock_gettime 445# ifdef SYS_clock_gettime
294# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 446# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
295# undef EV_USE_MONOTONIC 447# undef EV_USE_MONOTONIC
296# define EV_USE_MONOTONIC 1 448# define EV_USE_MONOTONIC 1
449# define EV_NEED_SYSCALL 1
297# else 450# else
298# undef EV_USE_CLOCK_SYSCALL 451# undef EV_USE_CLOCK_SYSCALL
299# define EV_USE_CLOCK_SYSCALL 0 452# define EV_USE_CLOCK_SYSCALL 0
300# endif 453# endif
301#endif 454#endif
… …
315#if !EV_STAT_ENABLE 468#if !EV_STAT_ENABLE
316# undef EV_USE_INOTIFY 469# undef EV_USE_INOTIFY
317# define EV_USE_INOTIFY 0 470# define EV_USE_INOTIFY 0
318#endif 471#endif
319 472
473#if __linux && EV_USE_IOURING
474# include <linux/version.h>
475# if LINUX_VERSION_CODE < KERNEL_VERSION(4,14,0)
476# undef EV_USE_IOURING
477# define EV_USE_IOURING 0
478# endif
479#endif
480
320#if !EV_USE_NANOSLEEP 481#if !EV_USE_NANOSLEEP
321# ifndef _WIN32 482/* hp-ux has it in sys/time.h, which we unconditionally include above */
483# if !defined _WIN32 && !defined __hpux
322# include <sys/select.h> 484# include <sys/select.h>
323# endif 485# endif
324#endif 486#endif
325 487
488#if EV_USE_LINUXAIO
489# include <sys/syscall.h>
490# if SYS_io_getevents && EV_USE_EPOLL /* linuxaio backend requires epoll backend */
491# define EV_NEED_SYSCALL 1
492# else
493# undef EV_USE_LINUXAIO
494# define EV_USE_LINUXAIO 0
495# endif
496#endif
497
498#if EV_USE_IOURING
499# include <sys/syscall.h>
500# if !SYS_io_uring_register && __linux && !__alpha
501# define SYS_io_uring_setup 425
502# define SYS_io_uring_enter 426
503# define SYS_io_uring_register 427
504# endif
505# if SYS_io_uring_setup && EV_USE_EPOLL /* iouring backend requires epoll backend */
506# define EV_NEED_SYSCALL 1
507# else
508# undef EV_USE_IOURING
509# define EV_USE_IOURING 0
510# endif
511#endif
512
326#if EV_USE_INOTIFY 513#if EV_USE_INOTIFY
327# include <sys/utsname.h>
328# include <sys/statfs.h> 514# include <sys/statfs.h>
329# include <sys/inotify.h> 515# include <sys/inotify.h>
330/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 516/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
331# ifndef IN_DONT_FOLLOW 517# ifndef IN_DONT_FOLLOW
332# undef EV_USE_INOTIFY 518# undef EV_USE_INOTIFY
333# define EV_USE_INOTIFY 0 519# define EV_USE_INOTIFY 0
334# endif 520# endif
335#endif 521#endif
336 522
337#if EV_SELECT_IS_WINSOCKET
338# include <winsock.h>
339#endif
340
341#if EV_USE_EVENTFD 523#if EV_USE_EVENTFD
342/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 524/* our minimum requirement is glibc 2.7 which has the stub, but not the full header */
343# include <stdint.h> 525# include <stdint.h>
344# ifdef __cplusplus 526# ifndef EFD_NONBLOCK
345extern "C" { 527# define EFD_NONBLOCK O_NONBLOCK
346# endif 528# endif
347int eventfd (unsigned int initval, int flags); 529# ifndef EFD_CLOEXEC
348# ifdef __cplusplus 530# ifdef O_CLOEXEC
349} 531# define EFD_CLOEXEC O_CLOEXEC
532# else
533# define EFD_CLOEXEC 02000000
534# endif
350# endif 535# endif
536EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
537#endif
538
539#if EV_USE_SIGNALFD
540/* our minimum requirement is glibc 2.7 which has the stub, but not the full header */
541# include <stdint.h>
542# ifndef SFD_NONBLOCK
543# define SFD_NONBLOCK O_NONBLOCK
351#endif 544# endif
545# ifndef SFD_CLOEXEC
546# ifdef O_CLOEXEC
547# define SFD_CLOEXEC O_CLOEXEC
548# else
549# define SFD_CLOEXEC 02000000
550# endif
551# endif
552EV_CPP (extern "C") int (signalfd) (int fd, const sigset_t *mask, int flags);
352 553
353/**/ 554struct signalfd_siginfo
555{
556 uint32_t ssi_signo;
557 char pad[128 - sizeof (uint32_t)];
558};
559#endif
560
561/* for timerfd, libev core requires TFD_TIMER_CANCEL_ON_SET &c */
562#if EV_USE_TIMERFD
563# include <sys/timerfd.h>
564/* timerfd is only used for periodics */
565# if !(defined (TFD_TIMER_CANCEL_ON_SET) && defined (TFD_CLOEXEC) && defined (TFD_NONBLOCK)) || !EV_PERIODIC_ENABLE
566# undef EV_USE_TIMERFD
567# define EV_USE_TIMERFD 0
568# endif
569#endif
570
571/*****************************************************************************/
354 572
355#if EV_VERIFY >= 3 573#if EV_VERIFY >= 3
356# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 574# define EV_FREQUENT_CHECK ev_verify (EV_A)
357#else 575#else
358# define EV_FREQUENT_CHECK do { } while (0) 576# define EV_FREQUENT_CHECK do { } while (0)
359#endif 577#endif
360 578
361/* 579/*
362 * This is used to avoid floating point rounding problems. 580 * 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. 581 * This value is good at least till the year 4000.
367 * Better solutions welcome.
368 */ 582 */
369#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 583#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
584/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
370 585
371#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 586#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) */ 587#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 */ 588#define MAX_BLOCKTIME2 1500001.07 /* same, but when timerfd is used to detect jumps, also safe delay to not overflow */
374 589
590/* find a portable timestamp that is "always" in the future but fits into time_t.
591 * this is quite hard, and we are mostly guessing - we handle 32 bit signed/unsigned time_t,
592 * and sizes larger than 32 bit, and maybe the unlikely floating point time_t */
593#define EV_TSTAMP_HUGE \
594 (sizeof (time_t) >= 8 ? 10000000000000. \
595 : 0 < (time_t)4294967295 ? 4294967295. \
596 : 2147483647.) \
597
598#ifndef EV_TS_CONST
599# define EV_TS_CONST(nv) nv
600# define EV_TS_TO_MSEC(a) a * 1e3 + 0.9999
601# define EV_TS_FROM_USEC(us) us * 1e-6
602# define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
603# define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
604# define EV_TV_GET(tv) ((tv).tv_sec + (tv).tv_usec * 1e-6)
605# define EV_TS_GET(ts) ((ts).tv_sec + (ts).tv_nsec * 1e-9)
606#endif
607
608/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
609/* ECB.H BEGIN */
610/*
611 * libecb - http://software.schmorp.de/pkg/libecb
612 *
613 * Copyright (©) 2009-2015,2018-2020 Marc Alexander Lehmann <libecb@schmorp.de>
614 * Copyright (©) 2011 Emanuele Giaquinta
615 * All rights reserved.
616 *
617 * Redistribution and use in source and binary forms, with or without modifica-
618 * tion, are permitted provided that the following conditions are met:
619 *
620 * 1. Redistributions of source code must retain the above copyright notice,
621 * this list of conditions and the following disclaimer.
622 *
623 * 2. Redistributions in binary form must reproduce the above copyright
624 * notice, this list of conditions and the following disclaimer in the
625 * documentation and/or other materials provided with the distribution.
626 *
627 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
628 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
629 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
630 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
631 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
632 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
633 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
634 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
635 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
636 * OF THE POSSIBILITY OF SUCH DAMAGE.
637 *
638 * Alternatively, the contents of this file may be used under the terms of
639 * the GNU General Public License ("GPL") version 2 or any later version,
640 * in which case the provisions of the GPL are applicable instead of
641 * the above. If you wish to allow the use of your version of this file
642 * only under the terms of the GPL and not to allow others to use your
643 * version of this file under the BSD license, indicate your decision
644 * by deleting the provisions above and replace them with the notice
645 * and other provisions required by the GPL. If you do not delete the
646 * provisions above, a recipient may use your version of this file under
647 * either the BSD or the GPL.
648 */
649
650#ifndef ECB_H
651#define ECB_H
652
653/* 16 bits major, 16 bits minor */
654#define ECB_VERSION 0x00010008
655
656#include <string.h> /* for memcpy */
657
658#if defined (_WIN32) && !defined (__MINGW32__)
659 typedef signed char int8_t;
660 typedef unsigned char uint8_t;
661 typedef signed char int_fast8_t;
662 typedef unsigned char uint_fast8_t;
663 typedef signed short int16_t;
664 typedef unsigned short uint16_t;
665 typedef signed int int_fast16_t;
666 typedef unsigned int uint_fast16_t;
667 typedef signed int int32_t;
668 typedef unsigned int uint32_t;
669 typedef signed int int_fast32_t;
670 typedef unsigned int uint_fast32_t;
375#if __GNUC__ >= 4 671 #if __GNUC__
376# define expect(expr,value) __builtin_expect ((expr),(value)) 672 typedef signed long long int64_t;
377# define noinline __attribute__ ((noinline)) 673 typedef unsigned long long uint64_t;
674 #else /* _MSC_VER || __BORLANDC__ */
675 typedef signed __int64 int64_t;
676 typedef unsigned __int64 uint64_t;
677 #endif
678 typedef int64_t int_fast64_t;
679 typedef uint64_t uint_fast64_t;
680 #ifdef _WIN64
681 #define ECB_PTRSIZE 8
682 typedef uint64_t uintptr_t;
683 typedef int64_t intptr_t;
684 #else
685 #define ECB_PTRSIZE 4
686 typedef uint32_t uintptr_t;
687 typedef int32_t intptr_t;
688 #endif
378#else 689#else
379# define expect(expr,value) (expr) 690 #include <inttypes.h>
380# define noinline 691 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
381# if __STDC_VERSION__ < 199901L && __GNUC__ < 2 692 #define ECB_PTRSIZE 8
382# define inline 693 #else
694 #define ECB_PTRSIZE 4
695 #endif
383# endif 696#endif
697
698#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
699#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
700
701#ifndef ECB_OPTIMIZE_SIZE
702 #if __OPTIMIZE_SIZE__
703 #define ECB_OPTIMIZE_SIZE 1
704 #else
705 #define ECB_OPTIMIZE_SIZE 0
384#endif 706 #endif
707#endif
385 708
386#define expect_false(expr) expect ((expr) != 0, 0) 709/* work around x32 idiocy by defining proper macros */
387#define expect_true(expr) expect ((expr) != 0, 1) 710#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
388#define inline_size static inline 711 #if _ILP32
712 #define ECB_AMD64_X32 1
713 #else
714 #define ECB_AMD64 1
715 #endif
716#endif
389 717
390#if EV_MINIMAL 718/* many compilers define _GNUC_ to some versions but then only implement
391# define inline_speed static noinline 719 * what their idiot authors think are the "more important" extensions,
720 * causing enormous grief in return for some better fake benchmark numbers.
721 * or so.
722 * we try to detect these and simply assume they are not gcc - if they have
723 * an issue with that they should have done it right in the first place.
724 */
725#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
726 #define ECB_GCC_VERSION(major,minor) 0
392#else 727#else
728 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
729#endif
730
731#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
732
733#if __clang__ && defined __has_builtin
734 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
735#else
736 #define ECB_CLANG_BUILTIN(x) 0
737#endif
738
739#if __clang__ && defined __has_extension
740 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
741#else
742 #define ECB_CLANG_EXTENSION(x) 0
743#endif
744
745#define ECB_CPP (__cplusplus+0)
746#define ECB_CPP11 (__cplusplus >= 201103L)
747#define ECB_CPP14 (__cplusplus >= 201402L)
748#define ECB_CPP17 (__cplusplus >= 201703L)
749
750#if ECB_CPP
751 #define ECB_C 0
752 #define ECB_STDC_VERSION 0
753#else
754 #define ECB_C 1
755 #define ECB_STDC_VERSION __STDC_VERSION__
756#endif
757
758#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
759#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
760#define ECB_C17 (ECB_STDC_VERSION >= 201710L)
761
762#if ECB_CPP
763 #define ECB_EXTERN_C extern "C"
764 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
765 #define ECB_EXTERN_C_END }
766#else
767 #define ECB_EXTERN_C extern
768 #define ECB_EXTERN_C_BEG
769 #define ECB_EXTERN_C_END
770#endif
771
772/*****************************************************************************/
773
774/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
775/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
776
777#if ECB_NO_THREADS
778 #define ECB_NO_SMP 1
779#endif
780
781#if ECB_NO_SMP
782 #define ECB_MEMORY_FENCE do { } while (0)
783#endif
784
785/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
786#if __xlC__ && ECB_CPP
787 #include <builtins.h>
788#endif
789
790#if 1400 <= _MSC_VER
791 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
792#endif
793
794#ifndef ECB_MEMORY_FENCE
795 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
796 #define ECB_MEMORY_FENCE_RELAXED __asm__ __volatile__ ("" : : : "memory")
797 #if __i386 || __i386__
798 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
799 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
800 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
801 #elif ECB_GCC_AMD64
802 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
803 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
804 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
805 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
806 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
807 #elif defined __ARM_ARCH_2__ \
808 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
809 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
810 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
811 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
812 || defined __ARM_ARCH_5TEJ__
813 /* should not need any, unless running old code on newer cpu - arm doesn't support that */
814 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
815 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
816 || defined __ARM_ARCH_6T2__
817 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
818 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
819 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
820 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
821 #elif __aarch64__
822 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
823 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
824 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
825 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
826 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
827 #elif defined __s390__ || defined __s390x__
828 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
829 #elif defined __mips__
830 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
831 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
832 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
833 #elif defined __alpha__
834 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
835 #elif defined __hppa__
836 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
837 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
838 #elif defined __ia64__
839 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
840 #elif defined __m68k__
841 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
842 #elif defined __m88k__
843 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
844 #elif defined __sh__
845 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
846 #endif
847 #endif
848#endif
849
850#ifndef ECB_MEMORY_FENCE
851 #if ECB_GCC_VERSION(4,7)
852 /* see comment below (stdatomic.h) about the C11 memory model. */
853 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
854 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
855 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
856 #define ECB_MEMORY_FENCE_RELAXED __atomic_thread_fence (__ATOMIC_RELAXED)
857
858 #elif ECB_CLANG_EXTENSION(c_atomic)
859 /* see comment below (stdatomic.h) about the C11 memory model. */
860 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
861 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
862 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
863 #define ECB_MEMORY_FENCE_RELAXED __c11_atomic_thread_fence (__ATOMIC_RELAXED)
864
865 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
866 #define ECB_MEMORY_FENCE __sync_synchronize ()
867 #elif _MSC_VER >= 1500 /* VC++ 2008 */
868 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
869 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
870 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
871 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
872 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
873 #elif _MSC_VER >= 1400 /* VC++ 2005 */
874 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
875 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
876 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
877 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
878 #elif defined _WIN32
879 #include <WinNT.h>
880 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
881 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
882 #include <mbarrier.h>
883 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
884 #define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier ()
885 #define ECB_MEMORY_FENCE_RELEASE __machine_rel_barrier ()
886 #define ECB_MEMORY_FENCE_RELAXED __compiler_barrier ()
887 #elif __xlC__
888 #define ECB_MEMORY_FENCE __sync ()
889 #endif
890#endif
891
892#ifndef ECB_MEMORY_FENCE
893 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
894 /* we assume that these memory fences work on all variables/all memory accesses, */
895 /* not just C11 atomics and atomic accesses */
896 #include <stdatomic.h>
897 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
898 #define ECB_MEMORY_FENCE_ACQUIRE atomic_thread_fence (memory_order_acquire)
899 #define ECB_MEMORY_FENCE_RELEASE atomic_thread_fence (memory_order_release)
900 #endif
901#endif
902
903#ifndef ECB_MEMORY_FENCE
904 #if !ECB_AVOID_PTHREADS
905 /*
906 * if you get undefined symbol references to pthread_mutex_lock,
907 * or failure to find pthread.h, then you should implement
908 * the ECB_MEMORY_FENCE operations for your cpu/compiler
909 * OR provide pthread.h and link against the posix thread library
910 * of your system.
911 */
912 #include <pthread.h>
913 #define ECB_NEEDS_PTHREADS 1
914 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
915
916 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
917 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
918 #endif
919#endif
920
921#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
922 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
923#endif
924
925#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
926 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
927#endif
928
929#if !defined ECB_MEMORY_FENCE_RELAXED && defined ECB_MEMORY_FENCE
930 #define ECB_MEMORY_FENCE_RELAXED ECB_MEMORY_FENCE /* very heavy-handed */
931#endif
932
933/*****************************************************************************/
934
935#if ECB_CPP
936 #define ecb_inline static inline
937#elif ECB_GCC_VERSION(2,5)
938 #define ecb_inline static __inline__
939#elif ECB_C99
940 #define ecb_inline static inline
941#else
942 #define ecb_inline static
943#endif
944
945#if ECB_GCC_VERSION(3,3)
946 #define ecb_restrict __restrict__
947#elif ECB_C99
948 #define ecb_restrict restrict
949#else
950 #define ecb_restrict
951#endif
952
953typedef int ecb_bool;
954
955#define ECB_CONCAT_(a, b) a ## b
956#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
957#define ECB_STRINGIFY_(a) # a
958#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
959#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
960
961#define ecb_function_ ecb_inline
962
963#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
964 #define ecb_attribute(attrlist) __attribute__ (attrlist)
965#else
966 #define ecb_attribute(attrlist)
967#endif
968
969#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
970 #define ecb_is_constant(expr) __builtin_constant_p (expr)
971#else
972 /* possible C11 impl for integral types
973 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
974 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
975
976 #define ecb_is_constant(expr) 0
977#endif
978
979#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
980 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
981#else
982 #define ecb_expect(expr,value) (expr)
983#endif
984
985#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
986 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
987#else
988 #define ecb_prefetch(addr,rw,locality)
989#endif
990
991/* no emulation for ecb_decltype */
992#if ECB_CPP11
993 // older implementations might have problems with decltype(x)::type, work around it
994 template<class T> struct ecb_decltype_t { typedef T type; };
995 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
996#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
997 #define ecb_decltype(x) __typeof__ (x)
998#endif
999
1000#if _MSC_VER >= 1300
1001 #define ecb_deprecated __declspec (deprecated)
1002#else
1003 #define ecb_deprecated ecb_attribute ((__deprecated__))
1004#endif
1005
1006#if _MSC_VER >= 1500
1007 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
1008#elif ECB_GCC_VERSION(4,5)
1009 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
1010#else
1011 #define ecb_deprecated_message(msg) ecb_deprecated
1012#endif
1013
1014#if _MSC_VER >= 1400
1015 #define ecb_noinline __declspec (noinline)
1016#else
1017 #define ecb_noinline ecb_attribute ((__noinline__))
1018#endif
1019
1020#define ecb_unused ecb_attribute ((__unused__))
1021#define ecb_const ecb_attribute ((__const__))
1022#define ecb_pure ecb_attribute ((__pure__))
1023
1024#if ECB_C11 || __IBMC_NORETURN
1025 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
1026 #define ecb_noreturn _Noreturn
1027#elif ECB_CPP11
1028 #define ecb_noreturn [[noreturn]]
1029#elif _MSC_VER >= 1200
1030 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
1031 #define ecb_noreturn __declspec (noreturn)
1032#else
1033 #define ecb_noreturn ecb_attribute ((__noreturn__))
1034#endif
1035
1036#if ECB_GCC_VERSION(4,3)
1037 #define ecb_artificial ecb_attribute ((__artificial__))
1038 #define ecb_hot ecb_attribute ((__hot__))
1039 #define ecb_cold ecb_attribute ((__cold__))
1040#else
1041 #define ecb_artificial
1042 #define ecb_hot
1043 #define ecb_cold
1044#endif
1045
1046/* put around conditional expressions if you are very sure that the */
1047/* expression is mostly true or mostly false. note that these return */
1048/* booleans, not the expression. */
1049#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
1050#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
1051/* for compatibility to the rest of the world */
1052#define ecb_likely(expr) ecb_expect_true (expr)
1053#define ecb_unlikely(expr) ecb_expect_false (expr)
1054
1055/* count trailing zero bits and count # of one bits */
1056#if ECB_GCC_VERSION(3,4) \
1057 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
1058 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
1059 && ECB_CLANG_BUILTIN(__builtin_popcount))
1060 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
1061 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
1062 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
1063 #define ecb_ctz32(x) __builtin_ctz (x)
1064 #define ecb_ctz64(x) __builtin_ctzll (x)
1065 #define ecb_popcount32(x) __builtin_popcount (x)
1066 /* no popcountll */
1067#else
1068 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
1069 ecb_function_ ecb_const int
1070 ecb_ctz32 (uint32_t x)
1071 {
1072#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1073 unsigned long r;
1074 _BitScanForward (&r, x);
1075 return (int)r;
1076#else
1077 int r = 0;
1078
1079 x &= ~x + 1; /* this isolates the lowest bit */
1080
1081#if ECB_branchless_on_i386
1082 r += !!(x & 0xaaaaaaaa) << 0;
1083 r += !!(x & 0xcccccccc) << 1;
1084 r += !!(x & 0xf0f0f0f0) << 2;
1085 r += !!(x & 0xff00ff00) << 3;
1086 r += !!(x & 0xffff0000) << 4;
1087#else
1088 if (x & 0xaaaaaaaa) r += 1;
1089 if (x & 0xcccccccc) r += 2;
1090 if (x & 0xf0f0f0f0) r += 4;
1091 if (x & 0xff00ff00) r += 8;
1092 if (x & 0xffff0000) r += 16;
1093#endif
1094
1095 return r;
1096#endif
1097 }
1098
1099 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
1100 ecb_function_ ecb_const int
1101 ecb_ctz64 (uint64_t x)
1102 {
1103#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1104 unsigned long r;
1105 _BitScanForward64 (&r, x);
1106 return (int)r;
1107#else
1108 int shift = x & 0xffffffff ? 0 : 32;
1109 return ecb_ctz32 (x >> shift) + shift;
1110#endif
1111 }
1112
1113 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
1114 ecb_function_ ecb_const int
1115 ecb_popcount32 (uint32_t x)
1116 {
1117 x -= (x >> 1) & 0x55555555;
1118 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
1119 x = ((x >> 4) + x) & 0x0f0f0f0f;
1120 x *= 0x01010101;
1121
1122 return x >> 24;
1123 }
1124
1125 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
1126 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
1127 {
1128#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1129 unsigned long r;
1130 _BitScanReverse (&r, x);
1131 return (int)r;
1132#else
1133 int r = 0;
1134
1135 if (x >> 16) { x >>= 16; r += 16; }
1136 if (x >> 8) { x >>= 8; r += 8; }
1137 if (x >> 4) { x >>= 4; r += 4; }
1138 if (x >> 2) { x >>= 2; r += 2; }
1139 if (x >> 1) { r += 1; }
1140
1141 return r;
1142#endif
1143 }
1144
1145 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
1146 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
1147 {
1148#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1149 unsigned long r;
1150 _BitScanReverse64 (&r, x);
1151 return (int)r;
1152#else
1153 int r = 0;
1154
1155 if (x >> 32) { x >>= 32; r += 32; }
1156
1157 return r + ecb_ld32 (x);
1158#endif
1159 }
1160#endif
1161
1162ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
1163ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
1164ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
1165ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
1166
1167ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
1168ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
1169{
1170 return ( (x * 0x0802U & 0x22110U)
1171 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
1172}
1173
1174ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
1175ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
1176{
1177 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
1178 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
1179 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
1180 x = ( x >> 8 ) | ( x << 8);
1181
1182 return x;
1183}
1184
1185ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
1186ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
1187{
1188 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
1189 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
1190 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
1191 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
1192 x = ( x >> 16 ) | ( x << 16);
1193
1194 return x;
1195}
1196
1197/* popcount64 is only available on 64 bit cpus as gcc builtin */
1198/* so for this version we are lazy */
1199ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
1200ecb_function_ ecb_const int
1201ecb_popcount64 (uint64_t x)
1202{
1203 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
1204}
1205
1206ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
1207ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
1208ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
1209ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
1210ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
1211ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
1212ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
1213ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
1214
1215ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
1216ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
1217ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
1218ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
1219ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
1220ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
1221ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
1222ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
1223
1224#if ECB_CPP
1225
1226inline uint8_t ecb_ctz (uint8_t v) { return ecb_ctz32 (v); }
1227inline uint16_t ecb_ctz (uint16_t v) { return ecb_ctz32 (v); }
1228inline uint32_t ecb_ctz (uint32_t v) { return ecb_ctz32 (v); }
1229inline uint64_t ecb_ctz (uint64_t v) { return ecb_ctz64 (v); }
1230
1231inline bool ecb_is_pot (uint8_t v) { return ecb_is_pot32 (v); }
1232inline bool ecb_is_pot (uint16_t v) { return ecb_is_pot32 (v); }
1233inline bool ecb_is_pot (uint32_t v) { return ecb_is_pot32 (v); }
1234inline bool ecb_is_pot (uint64_t v) { return ecb_is_pot64 (v); }
1235
1236inline int ecb_ld (uint8_t v) { return ecb_ld32 (v); }
1237inline int ecb_ld (uint16_t v) { return ecb_ld32 (v); }
1238inline int ecb_ld (uint32_t v) { return ecb_ld32 (v); }
1239inline int ecb_ld (uint64_t v) { return ecb_ld64 (v); }
1240
1241inline int ecb_popcount (uint8_t v) { return ecb_popcount32 (v); }
1242inline int ecb_popcount (uint16_t v) { return ecb_popcount32 (v); }
1243inline int ecb_popcount (uint32_t v) { return ecb_popcount32 (v); }
1244inline int ecb_popcount (uint64_t v) { return ecb_popcount64 (v); }
1245
1246inline uint8_t ecb_bitrev (uint8_t v) { return ecb_bitrev8 (v); }
1247inline uint16_t ecb_bitrev (uint16_t v) { return ecb_bitrev16 (v); }
1248inline uint32_t ecb_bitrev (uint32_t v) { return ecb_bitrev32 (v); }
1249
1250inline uint8_t ecb_rotl (uint8_t v, unsigned int count) { return ecb_rotl8 (v, count); }
1251inline uint16_t ecb_rotl (uint16_t v, unsigned int count) { return ecb_rotl16 (v, count); }
1252inline uint32_t ecb_rotl (uint32_t v, unsigned int count) { return ecb_rotl32 (v, count); }
1253inline uint64_t ecb_rotl (uint64_t v, unsigned int count) { return ecb_rotl64 (v, count); }
1254
1255inline uint8_t ecb_rotr (uint8_t v, unsigned int count) { return ecb_rotr8 (v, count); }
1256inline uint16_t ecb_rotr (uint16_t v, unsigned int count) { return ecb_rotr16 (v, count); }
1257inline uint32_t ecb_rotr (uint32_t v, unsigned int count) { return ecb_rotr32 (v, count); }
1258inline uint64_t ecb_rotr (uint64_t v, unsigned int count) { return ecb_rotr64 (v, count); }
1259
1260#endif
1261
1262#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1263 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1264 #define ecb_bswap16(x) __builtin_bswap16 (x)
1265 #else
1266 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1267 #endif
1268 #define ecb_bswap32(x) __builtin_bswap32 (x)
1269 #define ecb_bswap64(x) __builtin_bswap64 (x)
1270#elif _MSC_VER
1271 #include <stdlib.h>
1272 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1273 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1274 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
1275#else
1276 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
1277 ecb_function_ ecb_const uint16_t
1278 ecb_bswap16 (uint16_t x)
1279 {
1280 return ecb_rotl16 (x, 8);
1281 }
1282
1283 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
1284 ecb_function_ ecb_const uint32_t
1285 ecb_bswap32 (uint32_t x)
1286 {
1287 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
1288 }
1289
1290 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
1291 ecb_function_ ecb_const uint64_t
1292 ecb_bswap64 (uint64_t x)
1293 {
1294 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
1295 }
1296#endif
1297
1298#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
1299 #define ecb_unreachable() __builtin_unreachable ()
1300#else
1301 /* this seems to work fine, but gcc always emits a warning for it :/ */
1302 ecb_inline ecb_noreturn void ecb_unreachable (void);
1303 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
1304#endif
1305
1306/* try to tell the compiler that some condition is definitely true */
1307#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
1308
1309ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
1310ecb_inline ecb_const uint32_t
1311ecb_byteorder_helper (void)
1312{
1313 /* the union code still generates code under pressure in gcc, */
1314 /* but less than using pointers, and always seems to */
1315 /* successfully return a constant. */
1316 /* the reason why we have this horrible preprocessor mess */
1317 /* is to avoid it in all cases, at least on common architectures */
1318 /* or when using a recent enough gcc version (>= 4.6) */
1319#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1320 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1321 #define ECB_LITTLE_ENDIAN 1
1322 return 0x44332211;
1323#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1324 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1325 #define ECB_BIG_ENDIAN 1
1326 return 0x11223344;
1327#else
1328 union
1329 {
1330 uint8_t c[4];
1331 uint32_t u;
1332 } u = { 0x11, 0x22, 0x33, 0x44 };
1333 return u.u;
1334#endif
1335}
1336
1337ecb_inline ecb_const ecb_bool ecb_big_endian (void);
1338ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
1339ecb_inline ecb_const ecb_bool ecb_little_endian (void);
1340ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
1341
1342/*****************************************************************************/
1343/* unaligned load/store */
1344
1345ecb_inline uint_fast16_t ecb_be_u16_to_host (uint_fast16_t v) { return ecb_little_endian () ? ecb_bswap16 (v) : v; }
1346ecb_inline uint_fast32_t ecb_be_u32_to_host (uint_fast32_t v) { return ecb_little_endian () ? ecb_bswap32 (v) : v; }
1347ecb_inline uint_fast64_t ecb_be_u64_to_host (uint_fast64_t v) { return ecb_little_endian () ? ecb_bswap64 (v) : v; }
1348
1349ecb_inline uint_fast16_t ecb_le_u16_to_host (uint_fast16_t v) { return ecb_big_endian () ? ecb_bswap16 (v) : v; }
1350ecb_inline uint_fast32_t ecb_le_u32_to_host (uint_fast32_t v) { return ecb_big_endian () ? ecb_bswap32 (v) : v; }
1351ecb_inline uint_fast64_t ecb_le_u64_to_host (uint_fast64_t v) { return ecb_big_endian () ? ecb_bswap64 (v) : v; }
1352
1353ecb_inline uint_fast16_t ecb_peek_u16_u (const void *ptr) { uint16_t v; memcpy (&v, ptr, sizeof (v)); return v; }
1354ecb_inline uint_fast32_t ecb_peek_u32_u (const void *ptr) { uint32_t v; memcpy (&v, ptr, sizeof (v)); return v; }
1355ecb_inline uint_fast64_t ecb_peek_u64_u (const void *ptr) { uint64_t v; memcpy (&v, ptr, sizeof (v)); return v; }
1356
1357ecb_inline uint_fast16_t ecb_peek_be_u16_u (const void *ptr) { return ecb_be_u16_to_host (ecb_peek_u16_u (ptr)); }
1358ecb_inline uint_fast32_t ecb_peek_be_u32_u (const void *ptr) { return ecb_be_u32_to_host (ecb_peek_u32_u (ptr)); }
1359ecb_inline uint_fast64_t ecb_peek_be_u64_u (const void *ptr) { return ecb_be_u64_to_host (ecb_peek_u64_u (ptr)); }
1360
1361ecb_inline uint_fast16_t ecb_peek_le_u16_u (const void *ptr) { return ecb_le_u16_to_host (ecb_peek_u16_u (ptr)); }
1362ecb_inline uint_fast32_t ecb_peek_le_u32_u (const void *ptr) { return ecb_le_u32_to_host (ecb_peek_u32_u (ptr)); }
1363ecb_inline uint_fast64_t ecb_peek_le_u64_u (const void *ptr) { return ecb_le_u64_to_host (ecb_peek_u64_u (ptr)); }
1364
1365ecb_inline uint_fast16_t ecb_host_to_be_u16 (uint_fast16_t v) { return ecb_little_endian () ? ecb_bswap16 (v) : v; }
1366ecb_inline uint_fast32_t ecb_host_to_be_u32 (uint_fast32_t v) { return ecb_little_endian () ? ecb_bswap32 (v) : v; }
1367ecb_inline uint_fast64_t ecb_host_to_be_u64 (uint_fast64_t v) { return ecb_little_endian () ? ecb_bswap64 (v) : v; }
1368
1369ecb_inline uint_fast16_t ecb_host_to_le_u16 (uint_fast16_t v) { return ecb_big_endian () ? ecb_bswap16 (v) : v; }
1370ecb_inline uint_fast32_t ecb_host_to_le_u32 (uint_fast32_t v) { return ecb_big_endian () ? ecb_bswap32 (v) : v; }
1371ecb_inline uint_fast64_t ecb_host_to_le_u64 (uint_fast64_t v) { return ecb_big_endian () ? ecb_bswap64 (v) : v; }
1372
1373ecb_inline void ecb_poke_u16_u (void *ptr, uint16_t v) { memcpy (ptr, &v, sizeof (v)); }
1374ecb_inline void ecb_poke_u32_u (void *ptr, uint32_t v) { memcpy (ptr, &v, sizeof (v)); }
1375ecb_inline void ecb_poke_u64_u (void *ptr, uint64_t v) { memcpy (ptr, &v, sizeof (v)); }
1376
1377ecb_inline void ecb_poke_be_u16_u (void *ptr, uint_fast16_t v) { ecb_poke_u16_u (ptr, ecb_host_to_be_u16 (v)); }
1378ecb_inline void ecb_poke_be_u32_u (void *ptr, uint_fast32_t v) { ecb_poke_u32_u (ptr, ecb_host_to_be_u32 (v)); }
1379ecb_inline void ecb_poke_be_u64_u (void *ptr, uint_fast64_t v) { ecb_poke_u64_u (ptr, ecb_host_to_be_u64 (v)); }
1380
1381ecb_inline void ecb_poke_le_u16_u (void *ptr, uint_fast16_t v) { ecb_poke_u16_u (ptr, ecb_host_to_le_u16 (v)); }
1382ecb_inline void ecb_poke_le_u32_u (void *ptr, uint_fast32_t v) { ecb_poke_u32_u (ptr, ecb_host_to_le_u32 (v)); }
1383ecb_inline void ecb_poke_le_u64_u (void *ptr, uint_fast64_t v) { ecb_poke_u64_u (ptr, ecb_host_to_le_u64 (v)); }
1384
1385#if ECB_CPP
1386
1387inline uint8_t ecb_bswap (uint8_t v) { return v; }
1388inline uint16_t ecb_bswap (uint16_t v) { return ecb_bswap16 (v); }
1389inline uint32_t ecb_bswap (uint32_t v) { return ecb_bswap32 (v); }
1390inline uint64_t ecb_bswap (uint64_t v) { return ecb_bswap64 (v); }
1391
1392template<typename T> inline T ecb_be_to_host (T v) { return ecb_little_endian () ? ecb_bswap (v) : v; }
1393template<typename T> inline T ecb_le_to_host (T v) { return ecb_big_endian () ? ecb_bswap (v) : v; }
1394template<typename T> inline T ecb_peek (const void *ptr) { return *(const T *)ptr; }
1395template<typename T> inline T ecb_peek_be (const void *ptr) { return ecb_be_to_host (ecb_peek <T> (ptr)); }
1396template<typename T> inline T ecb_peek_le (const void *ptr) { return ecb_le_to_host (ecb_peek <T> (ptr)); }
1397template<typename T> inline T ecb_peek_u (const void *ptr) { T v; memcpy (&v, ptr, sizeof (v)); return v; }
1398template<typename T> inline T ecb_peek_be_u (const void *ptr) { return ecb_be_to_host (ecb_peek_u<T> (ptr)); }
1399template<typename T> inline T ecb_peek_le_u (const void *ptr) { return ecb_le_to_host (ecb_peek_u<T> (ptr)); }
1400
1401template<typename T> inline T ecb_host_to_be (T v) { return ecb_little_endian () ? ecb_bswap (v) : v; }
1402template<typename T> inline T ecb_host_to_le (T v) { return ecb_big_endian () ? ecb_bswap (v) : v; }
1403template<typename T> inline void ecb_poke (void *ptr, T v) { *(T *)ptr = v; }
1404template<typename T> inline void ecb_poke_be (void *ptr, T v) { return ecb_poke <T> (ptr, ecb_host_to_be (v)); }
1405template<typename T> inline void ecb_poke_le (void *ptr, T v) { return ecb_poke <T> (ptr, ecb_host_to_le (v)); }
1406template<typename T> inline void ecb_poke_u (void *ptr, T v) { memcpy (ptr, &v, sizeof (v)); }
1407template<typename T> inline void ecb_poke_be_u (void *ptr, T v) { return ecb_poke_u<T> (ptr, ecb_host_to_be (v)); }
1408template<typename T> inline void ecb_poke_le_u (void *ptr, T v) { return ecb_poke_u<T> (ptr, ecb_host_to_le (v)); }
1409
1410#endif
1411
1412/*****************************************************************************/
1413
1414#if ECB_GCC_VERSION(3,0) || ECB_C99
1415 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1416#else
1417 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1418#endif
1419
1420#if ECB_CPP
1421 template<typename T>
1422 static inline T ecb_div_rd (T val, T div)
1423 {
1424 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1425 }
1426 template<typename T>
1427 static inline T ecb_div_ru (T val, T div)
1428 {
1429 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1430 }
1431#else
1432 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1433 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1434#endif
1435
1436#if ecb_cplusplus_does_not_suck
1437 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1438 template<typename T, int N>
1439 static inline int ecb_array_length (const T (&arr)[N])
1440 {
1441 return N;
1442 }
1443#else
1444 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1445#endif
1446
1447/*****************************************************************************/
1448
1449ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1450ecb_function_ ecb_const uint32_t
1451ecb_binary16_to_binary32 (uint32_t x)
1452{
1453 unsigned int s = (x & 0x8000) << (31 - 15);
1454 int e = (x >> 10) & 0x001f;
1455 unsigned int m = x & 0x03ff;
1456
1457 if (ecb_expect_false (e == 31))
1458 /* infinity or NaN */
1459 e = 255 - (127 - 15);
1460 else if (ecb_expect_false (!e))
1461 {
1462 if (ecb_expect_true (!m))
1463 /* zero, handled by code below by forcing e to 0 */
1464 e = 0 - (127 - 15);
1465 else
1466 {
1467 /* subnormal, renormalise */
1468 unsigned int s = 10 - ecb_ld32 (m);
1469
1470 m = (m << s) & 0x3ff; /* mask implicit bit */
1471 e -= s - 1;
1472 }
1473 }
1474
1475 /* e and m now are normalised, or zero, (or inf or nan) */
1476 e += 127 - 15;
1477
1478 return s | (e << 23) | (m << (23 - 10));
1479}
1480
1481ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1482ecb_function_ ecb_const uint16_t
1483ecb_binary32_to_binary16 (uint32_t x)
1484{
1485 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1486 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1487 unsigned int m = x & 0x007fffff;
1488
1489 x &= 0x7fffffff;
1490
1491 /* if it's within range of binary16 normals, use fast path */
1492 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1493 {
1494 /* mantissa round-to-even */
1495 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1496
1497 /* handle overflow */
1498 if (ecb_expect_false (m >= 0x00800000))
1499 {
1500 m >>= 1;
1501 e += 1;
1502 }
1503
1504 return s | (e << 10) | (m >> (23 - 10));
1505 }
1506
1507 /* handle large numbers and infinity */
1508 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1509 return s | 0x7c00;
1510
1511 /* handle zero, subnormals and small numbers */
1512 if (ecb_expect_true (x < 0x38800000))
1513 {
1514 /* zero */
1515 if (ecb_expect_true (!x))
1516 return s;
1517
1518 /* handle subnormals */
1519
1520 /* too small, will be zero */
1521 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1522 return s;
1523
1524 m |= 0x00800000; /* make implicit bit explicit */
1525
1526 /* very tricky - we need to round to the nearest e (+10) bit value */
1527 {
1528 unsigned int bits = 14 - e;
1529 unsigned int half = (1 << (bits - 1)) - 1;
1530 unsigned int even = (m >> bits) & 1;
1531
1532 /* if this overflows, we will end up with a normalised number */
1533 m = (m + half + even) >> bits;
1534 }
1535
1536 return s | m;
1537 }
1538
1539 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1540 m >>= 13;
1541
1542 return s | 0x7c00 | m | !m;
1543}
1544
1545/*******************************************************************************/
1546/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1547
1548/* basically, everything uses "ieee pure-endian" floating point numbers */
1549/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1550#if 0 \
1551 || __i386 || __i386__ \
1552 || ECB_GCC_AMD64 \
1553 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1554 || defined __s390__ || defined __s390x__ \
1555 || defined __mips__ \
1556 || defined __alpha__ \
1557 || defined __hppa__ \
1558 || defined __ia64__ \
1559 || defined __m68k__ \
1560 || defined __m88k__ \
1561 || defined __sh__ \
1562 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1563 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1564 || defined __aarch64__
1565 #define ECB_STDFP 1
1566#else
1567 #define ECB_STDFP 0
1568#endif
1569
1570#ifndef ECB_NO_LIBM
1571
1572 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1573
1574 /* only the oldest of old doesn't have this one. solaris. */
1575 #ifdef INFINITY
1576 #define ECB_INFINITY INFINITY
1577 #else
1578 #define ECB_INFINITY HUGE_VAL
1579 #endif
1580
1581 #ifdef NAN
1582 #define ECB_NAN NAN
1583 #else
1584 #define ECB_NAN ECB_INFINITY
1585 #endif
1586
1587 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1588 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1589 #define ecb_frexpf(x,e) frexpf ((x), (e))
1590 #else
1591 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1592 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1593 #endif
1594
1595 /* convert a float to ieee single/binary32 */
1596 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1597 ecb_function_ ecb_const uint32_t
1598 ecb_float_to_binary32 (float x)
1599 {
1600 uint32_t r;
1601
1602 #if ECB_STDFP
1603 memcpy (&r, &x, 4);
1604 #else
1605 /* slow emulation, works for anything but -0 */
1606 uint32_t m;
1607 int e;
1608
1609 if (x == 0e0f ) return 0x00000000U;
1610 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1611 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1612 if (x != x ) return 0x7fbfffffU;
1613
1614 m = ecb_frexpf (x, &e) * 0x1000000U;
1615
1616 r = m & 0x80000000U;
1617
1618 if (r)
1619 m = -m;
1620
1621 if (e <= -126)
1622 {
1623 m &= 0xffffffU;
1624 m >>= (-125 - e);
1625 e = -126;
1626 }
1627
1628 r |= (e + 126) << 23;
1629 r |= m & 0x7fffffU;
1630 #endif
1631
1632 return r;
1633 }
1634
1635 /* converts an ieee single/binary32 to a float */
1636 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1637 ecb_function_ ecb_const float
1638 ecb_binary32_to_float (uint32_t x)
1639 {
1640 float r;
1641
1642 #if ECB_STDFP
1643 memcpy (&r, &x, 4);
1644 #else
1645 /* emulation, only works for normals and subnormals and +0 */
1646 int neg = x >> 31;
1647 int e = (x >> 23) & 0xffU;
1648
1649 x &= 0x7fffffU;
1650
1651 if (e)
1652 x |= 0x800000U;
1653 else
1654 e = 1;
1655
1656 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1657 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1658
1659 r = neg ? -r : r;
1660 #endif
1661
1662 return r;
1663 }
1664
1665 /* convert a double to ieee double/binary64 */
1666 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1667 ecb_function_ ecb_const uint64_t
1668 ecb_double_to_binary64 (double x)
1669 {
1670 uint64_t r;
1671
1672 #if ECB_STDFP
1673 memcpy (&r, &x, 8);
1674 #else
1675 /* slow emulation, works for anything but -0 */
1676 uint64_t m;
1677 int e;
1678
1679 if (x == 0e0 ) return 0x0000000000000000U;
1680 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1681 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1682 if (x != x ) return 0X7ff7ffffffffffffU;
1683
1684 m = frexp (x, &e) * 0x20000000000000U;
1685
1686 r = m & 0x8000000000000000;;
1687
1688 if (r)
1689 m = -m;
1690
1691 if (e <= -1022)
1692 {
1693 m &= 0x1fffffffffffffU;
1694 m >>= (-1021 - e);
1695 e = -1022;
1696 }
1697
1698 r |= ((uint64_t)(e + 1022)) << 52;
1699 r |= m & 0xfffffffffffffU;
1700 #endif
1701
1702 return r;
1703 }
1704
1705 /* converts an ieee double/binary64 to a double */
1706 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1707 ecb_function_ ecb_const double
1708 ecb_binary64_to_double (uint64_t x)
1709 {
1710 double r;
1711
1712 #if ECB_STDFP
1713 memcpy (&r, &x, 8);
1714 #else
1715 /* emulation, only works for normals and subnormals and +0 */
1716 int neg = x >> 63;
1717 int e = (x >> 52) & 0x7ffU;
1718
1719 x &= 0xfffffffffffffU;
1720
1721 if (e)
1722 x |= 0x10000000000000U;
1723 else
1724 e = 1;
1725
1726 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1727 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1728
1729 r = neg ? -r : r;
1730 #endif
1731
1732 return r;
1733 }
1734
1735 /* convert a float to ieee half/binary16 */
1736 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1737 ecb_function_ ecb_const uint16_t
1738 ecb_float_to_binary16 (float x)
1739 {
1740 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1741 }
1742
1743 /* convert an ieee half/binary16 to float */
1744 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1745 ecb_function_ ecb_const float
1746 ecb_binary16_to_float (uint16_t x)
1747 {
1748 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1749 }
1750
1751#endif
1752
1753#endif
1754
1755/* ECB.H END */
1756
1757#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1758/* if your architecture doesn't need memory fences, e.g. because it is
1759 * single-cpu/core, or if you use libev in a project that doesn't use libev
1760 * from multiple threads, then you can define ECB_NO_THREADS when compiling
1761 * libev, in which cases the memory fences become nops.
1762 * alternatively, you can remove this #error and link against libpthread,
1763 * which will then provide the memory fences.
1764 */
1765# error "memory fences not defined for your architecture, please report"
1766#endif
1767
1768#ifndef ECB_MEMORY_FENCE
1769# define ECB_MEMORY_FENCE do { } while (0)
1770# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1771# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1772#endif
1773
1774#define inline_size ecb_inline
1775
1776#if EV_FEATURE_CODE
393# define inline_speed static inline 1777# define inline_speed ecb_inline
1778#else
1779# define inline_speed ecb_noinline static
394#endif 1780#endif
395 1781
1782/*****************************************************************************/
1783/* raw syscall wrappers */
1784
1785#if EV_NEED_SYSCALL
1786
1787#include <sys/syscall.h>
1788
1789/*
1790 * define some syscall wrappers for common architectures
1791 * this is mostly for nice looks during debugging, not performance.
1792 * our syscalls return < 0, not == -1, on error. which is good
1793 * enough for linux aio.
1794 * TODO: arm is also common nowadays, maybe even mips and x86
1795 * TODO: after implementing this, it suddenly looks like overkill, but its hard to remove...
1796 */
1797#if __GNUC__ && __linux && ECB_AMD64 && !EV_FEATURE_CODE
1798 /* the costly errno access probably kills this for size optimisation */
1799
1800 #define ev_syscall(nr,narg,arg1,arg2,arg3,arg4,arg5,arg6) \
1801 ({ \
1802 long res; \
1803 register unsigned long r6 __asm__ ("r9" ); \
1804 register unsigned long r5 __asm__ ("r8" ); \
1805 register unsigned long r4 __asm__ ("r10"); \
1806 register unsigned long r3 __asm__ ("rdx"); \
1807 register unsigned long r2 __asm__ ("rsi"); \
1808 register unsigned long r1 __asm__ ("rdi"); \
1809 if (narg >= 6) r6 = (unsigned long)(arg6); \
1810 if (narg >= 5) r5 = (unsigned long)(arg5); \
1811 if (narg >= 4) r4 = (unsigned long)(arg4); \
1812 if (narg >= 3) r3 = (unsigned long)(arg3); \
1813 if (narg >= 2) r2 = (unsigned long)(arg2); \
1814 if (narg >= 1) r1 = (unsigned long)(arg1); \
1815 __asm__ __volatile__ ( \
1816 "syscall\n\t" \
1817 : "=a" (res) \
1818 : "0" (nr), "r" (r1), "r" (r2), "r" (r3), "r" (r4), "r" (r5) \
1819 : "cc", "r11", "cx", "memory"); \
1820 errno = -res; \
1821 res; \
1822 })
1823
1824#endif
1825
1826#ifdef ev_syscall
1827 #define ev_syscall0(nr) ev_syscall (nr, 0, 0, 0, 0, 0, 0, 0)
1828 #define ev_syscall1(nr,arg1) ev_syscall (nr, 1, arg1, 0, 0, 0, 0, 0)
1829 #define ev_syscall2(nr,arg1,arg2) ev_syscall (nr, 2, arg1, arg2, 0, 0, 0, 0)
1830 #define ev_syscall3(nr,arg1,arg2,arg3) ev_syscall (nr, 3, arg1, arg2, arg3, 0, 0, 0)
1831 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) ev_syscall (nr, 3, arg1, arg2, arg3, arg4, 0, 0)
1832 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) ev_syscall (nr, 5, arg1, arg2, arg3, arg4, arg5, 0)
1833 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) ev_syscall (nr, 6, arg1, arg2, arg3, arg4, arg5,arg6)
1834#else
1835 #define ev_syscall0(nr) syscall (nr)
1836 #define ev_syscall1(nr,arg1) syscall (nr, arg1)
1837 #define ev_syscall2(nr,arg1,arg2) syscall (nr, arg1, arg2)
1838 #define ev_syscall3(nr,arg1,arg2,arg3) syscall (nr, arg1, arg2, arg3)
1839 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) syscall (nr, arg1, arg2, arg3, arg4)
1840 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) syscall (nr, arg1, arg2, arg3, arg4, arg5)
1841 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) syscall (nr, arg1, arg2, arg3, arg4, arg5,arg6)
1842#endif
1843
1844#endif
1845
1846/*****************************************************************************/
1847
396#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1848#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
1849
1850#if EV_MINPRI == EV_MAXPRI
1851# define ABSPRI(w) (((W)w), 0)
1852#else
397#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1853# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
1854#endif
398 1855
399#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1856#define EMPTY /* required for microsofts broken pseudo-c compiler */
400#define EMPTY2(a,b) /* used to suppress some warnings */
401 1857
402typedef ev_watcher *W; 1858typedef ev_watcher *W;
403typedef ev_watcher_list *WL; 1859typedef ev_watcher_list *WL;
404typedef ev_watcher_time *WT; 1860typedef ev_watcher_time *WT;
405 1861
406#define ev_active(w) ((W)(w))->active 1862#define ev_active(w) ((W)(w))->active
407#define ev_at(w) ((WT)(w))->at 1863#define ev_at(w) ((WT)(w))->at
408 1864
409#if EV_USE_REALTIME 1865#if EV_USE_REALTIME
410/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 1866/* 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 */ 1867/* giving it a reasonably high chance of working on typical architectures */
412static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 1868static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
413#endif 1869#endif
414 1870
415#if EV_USE_MONOTONIC 1871#if EV_USE_MONOTONIC
416static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 1872static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
417#endif 1873#endif
418 1874
1875#ifndef EV_FD_TO_WIN32_HANDLE
1876# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
1877#endif
1878#ifndef EV_WIN32_HANDLE_TO_FD
1879# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
1880#endif
1881#ifndef EV_WIN32_CLOSE_FD
1882# define EV_WIN32_CLOSE_FD(fd) close (fd)
1883#endif
1884
419#ifdef _WIN32 1885#ifdef _WIN32
420# include "ev_win32.c" 1886# include "ev_win32.c"
421#endif 1887#endif
422 1888
423/*****************************************************************************/ 1889/*****************************************************************************/
424 1890
1891#if EV_USE_LINUXAIO
1892# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
1893#endif
1894
1895/* define a suitable floor function (only used by periodics atm) */
1896
1897#if EV_USE_FLOOR
1898# include <math.h>
1899# define ev_floor(v) floor (v)
1900#else
1901
1902#include <float.h>
1903
1904/* a floor() replacement function, should be independent of ev_tstamp type */
1905ecb_noinline
1906static ev_tstamp
1907ev_floor (ev_tstamp v)
1908{
1909 /* the choice of shift factor is not terribly important */
1910#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1911 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1912#else
1913 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1914#endif
1915
1916 /* special treatment for negative arguments */
1917 if (ecb_expect_false (v < 0.))
1918 {
1919 ev_tstamp f = -ev_floor (-v);
1920
1921 return f - (f == v ? 0 : 1);
1922 }
1923
1924 /* argument too large for an unsigned long? then reduce it */
1925 if (ecb_expect_false (v >= shift))
1926 {
1927 ev_tstamp f;
1928
1929 if (v == v - 1.)
1930 return v; /* very large numbers are assumed to be integer */
1931
1932 f = shift * ev_floor (v * (1. / shift));
1933 return f + ev_floor (v - f);
1934 }
1935
1936 /* fits into an unsigned long */
1937 return (unsigned long)v;
1938}
1939
1940#endif
1941
1942/*****************************************************************************/
1943
1944#ifdef __linux
1945# include <sys/utsname.h>
1946#endif
1947
1948ecb_noinline ecb_cold
1949static unsigned int
1950ev_linux_version (void)
1951{
1952#ifdef __linux
1953 unsigned int v = 0;
1954 struct utsname buf;
1955 int i;
1956 char *p = buf.release;
1957
1958 if (uname (&buf))
1959 return 0;
1960
1961 for (i = 3+1; --i; )
1962 {
1963 unsigned int c = 0;
1964
1965 for (;;)
1966 {
1967 if (*p >= '0' && *p <= '9')
1968 c = c * 10 + *p++ - '0';
1969 else
1970 {
1971 p += *p == '.';
1972 break;
1973 }
1974 }
1975
1976 v = (v << 8) | c;
1977 }
1978
1979 return v;
1980#else
1981 return 0;
1982#endif
1983}
1984
1985/*****************************************************************************/
1986
1987#if EV_AVOID_STDIO
1988ecb_noinline ecb_cold
1989static void
1990ev_printerr (const char *msg)
1991{
1992 write (STDERR_FILENO, msg, strlen (msg));
1993}
1994#endif
1995
425static void (*syserr_cb)(const char *msg); 1996static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
426 1997
1998ecb_cold
427void 1999void
428ev_set_syserr_cb (void (*cb)(const char *msg)) 2000ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
429{ 2001{
430 syserr_cb = cb; 2002 syserr_cb = cb;
431} 2003}
432 2004
433static void noinline 2005ecb_noinline ecb_cold
2006static void
434ev_syserr (const char *msg) 2007ev_syserr (const char *msg)
435{ 2008{
436 if (!msg) 2009 if (!msg)
437 msg = "(libev) system error"; 2010 msg = "(libev) system error";
438 2011
439 if (syserr_cb) 2012 if (syserr_cb)
440 syserr_cb (msg); 2013 syserr_cb (msg);
441 else 2014 else
442 { 2015 {
2016#if EV_AVOID_STDIO
2017 ev_printerr (msg);
2018 ev_printerr (": ");
2019 ev_printerr (strerror (errno));
2020 ev_printerr ("\n");
2021#else
443 perror (msg); 2022 perror (msg);
2023#endif
444 abort (); 2024 abort ();
445 } 2025 }
446} 2026}
447 2027
448static void * 2028static void *
449ev_realloc_emul (void *ptr, long size) 2029ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
450{ 2030{
451 /* some systems, notably openbsd and darwin, fail to properly 2031 /* some systems, notably openbsd and darwin, fail to properly
452 * implement realloc (x, 0) (as required by both ansi c-98 and 2032 * implement realloc (x, 0) (as required by both ansi c-89 and
453 * the single unix specification, so work around them here. 2033 * the single unix specification, so work around them here.
2034 * recently, also (at least) fedora and debian started breaking it,
2035 * despite documenting it otherwise.
454 */ 2036 */
455 2037
456 if (size) 2038 if (size)
457 return realloc (ptr, size); 2039 return realloc (ptr, size);
458 2040
459 free (ptr); 2041 free (ptr);
460 return 0; 2042 return 0;
461} 2043}
462 2044
463static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 2045static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
464 2046
2047ecb_cold
465void 2048void
466ev_set_allocator (void *(*cb)(void *ptr, long size)) 2049ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
467{ 2050{
468 alloc = cb; 2051 alloc = cb;
469} 2052}
470 2053
471inline_speed void * 2054inline_speed void *
… …
473{ 2056{
474 ptr = alloc (ptr, size); 2057 ptr = alloc (ptr, size);
475 2058
476 if (!ptr && size) 2059 if (!ptr && size)
477 { 2060 {
2061#if EV_AVOID_STDIO
2062 ev_printerr ("(libev) memory allocation failed, aborting.\n");
2063#else
478 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 2064 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
2065#endif
479 abort (); 2066 abort ();
480 } 2067 }
481 2068
482 return ptr; 2069 return ptr;
483} 2070}
… …
485#define ev_malloc(size) ev_realloc (0, (size)) 2072#define ev_malloc(size) ev_realloc (0, (size))
486#define ev_free(ptr) ev_realloc ((ptr), 0) 2073#define ev_free(ptr) ev_realloc ((ptr), 0)
487 2074
488/*****************************************************************************/ 2075/*****************************************************************************/
489 2076
2077/* set in reify when reification needed */
2078#define EV_ANFD_REIFY 1
2079
490/* file descriptor info structure */ 2080/* file descriptor info structure */
491typedef struct 2081typedef struct
492{ 2082{
493 WL head; 2083 WL head;
494 unsigned char events; /* the events watched for */ 2084 unsigned char events; /* the events watched for */
495 unsigned char reify; /* flag set when this ANFD needs reification */ 2085 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 */ 2086 unsigned char emask; /* some backends store the actual kernel mask in here */
497 unsigned char unused; 2087 unsigned char eflags; /* flags field for use by backends */
498#if EV_USE_EPOLL 2088#if EV_USE_EPOLL
499 unsigned int egen; /* generation counter to counter epoll bugs */ 2089 unsigned int egen; /* generation counter to counter epoll bugs */
500#endif 2090#endif
501#if EV_SELECT_IS_WINSOCKET 2091#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
502 SOCKET handle; 2092 SOCKET handle;
2093#endif
2094#if EV_USE_IOCP
2095 OVERLAPPED or, ow;
503#endif 2096#endif
504} ANFD; 2097} ANFD;
505 2098
506/* stores the pending event set for a given watcher */ 2099/* stores the pending event set for a given watcher */
507typedef struct 2100typedef struct
… …
549 #undef VAR 2142 #undef VAR
550 }; 2143 };
551 #include "ev_wrap.h" 2144 #include "ev_wrap.h"
552 2145
553 static struct ev_loop default_loop_struct; 2146 static struct ev_loop default_loop_struct;
554 struct ev_loop *ev_default_loop_ptr; 2147 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
555 2148
556#else 2149#else
557 2150
558 ev_tstamp ev_rt_now; 2151 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; 2152 #define VAR(name,decl) static decl;
560 #include "ev_vars.h" 2153 #include "ev_vars.h"
561 #undef VAR 2154 #undef VAR
562 2155
563 static int ev_default_loop_ptr; 2156 static int ev_default_loop_ptr;
564 2157
565#endif 2158#endif
566 2159
2160#if EV_FEATURE_API
2161# define EV_RELEASE_CB if (ecb_expect_false (release_cb)) release_cb (EV_A)
2162# define EV_ACQUIRE_CB if (ecb_expect_false (acquire_cb)) acquire_cb (EV_A)
2163# define EV_INVOKE_PENDING invoke_cb (EV_A)
2164#else
2165# define EV_RELEASE_CB (void)0
2166# define EV_ACQUIRE_CB (void)0
2167# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
2168#endif
2169
2170#define EVBREAK_RECURSE 0x80
2171
567/*****************************************************************************/ 2172/*****************************************************************************/
568 2173
569#ifndef EV_HAVE_EV_TIME 2174#ifndef EV_HAVE_EV_TIME
570ev_tstamp 2175ev_tstamp
571ev_time (void) 2176ev_time (void) EV_NOEXCEPT
572{ 2177{
573#if EV_USE_REALTIME 2178#if EV_USE_REALTIME
574 if (expect_true (have_realtime)) 2179 if (ecb_expect_true (have_realtime))
575 { 2180 {
576 struct timespec ts; 2181 struct timespec ts;
577 clock_gettime (CLOCK_REALTIME, &ts); 2182 clock_gettime (CLOCK_REALTIME, &ts);
578 return ts.tv_sec + ts.tv_nsec * 1e-9; 2183 return EV_TS_GET (ts);
579 } 2184 }
580#endif 2185#endif
581 2186
2187 {
582 struct timeval tv; 2188 struct timeval tv;
583 gettimeofday (&tv, 0); 2189 gettimeofday (&tv, 0);
584 return tv.tv_sec + tv.tv_usec * 1e-6; 2190 return EV_TV_GET (tv);
2191 }
585} 2192}
586#endif 2193#endif
587 2194
588inline_size ev_tstamp 2195inline_size ev_tstamp
589get_clock (void) 2196get_clock (void)
590{ 2197{
591#if EV_USE_MONOTONIC 2198#if EV_USE_MONOTONIC
592 if (expect_true (have_monotonic)) 2199 if (ecb_expect_true (have_monotonic))
593 { 2200 {
594 struct timespec ts; 2201 struct timespec ts;
595 clock_gettime (CLOCK_MONOTONIC, &ts); 2202 clock_gettime (CLOCK_MONOTONIC, &ts);
596 return ts.tv_sec + ts.tv_nsec * 1e-9; 2203 return EV_TS_GET (ts);
597 } 2204 }
598#endif 2205#endif
599 2206
600 return ev_time (); 2207 return ev_time ();
601} 2208}
602 2209
603#if EV_MULTIPLICITY 2210#if EV_MULTIPLICITY
604ev_tstamp 2211ev_tstamp
605ev_now (EV_P) 2212ev_now (EV_P) EV_NOEXCEPT
606{ 2213{
607 return ev_rt_now; 2214 return ev_rt_now;
608} 2215}
609#endif 2216#endif
610 2217
611void 2218void
612ev_sleep (ev_tstamp delay) 2219ev_sleep (ev_tstamp delay) EV_NOEXCEPT
613{ 2220{
614 if (delay > 0.) 2221 if (delay > EV_TS_CONST (0.))
615 { 2222 {
616#if EV_USE_NANOSLEEP 2223#if EV_USE_NANOSLEEP
617 struct timespec ts; 2224 struct timespec ts;
618 2225
619 ts.tv_sec = (time_t)delay; 2226 EV_TS_SET (ts, delay);
620 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
621
622 nanosleep (&ts, 0); 2227 nanosleep (&ts, 0);
623#elif defined(_WIN32) 2228#elif defined _WIN32
2229 /* maybe this should round up, as ms is very low resolution */
2230 /* compared to select (µs) or nanosleep (ns) */
624 Sleep ((unsigned long)(delay * 1e3)); 2231 Sleep ((unsigned long)(EV_TS_TO_MSEC (delay)));
625#else 2232#else
626 struct timeval tv; 2233 struct timeval tv;
627 2234
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 */ 2235 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
632 /* somehting not guaranteed by newer posix versions, but guaranteed */ 2236 /* something not guaranteed by newer posix versions, but guaranteed */
633 /* by older ones */ 2237 /* by older ones */
2238 EV_TV_SET (tv, delay);
634 select (0, 0, 0, 0, &tv); 2239 select (0, 0, 0, 0, &tv);
635#endif 2240#endif
636 } 2241 }
637} 2242}
638 2243
639/*****************************************************************************/ 2244/*****************************************************************************/
640 2245
641#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 2246#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
642 2247
643/* find a suitable new size for the given array, */ 2248/* find a suitable new size for the given array, */
644/* hopefully by rounding to a ncie-to-malloc size */ 2249/* hopefully by rounding to a nice-to-malloc size */
645inline_size int 2250inline_size int
646array_nextsize (int elem, int cur, int cnt) 2251array_nextsize (int elem, int cur, int cnt)
647{ 2252{
648 int ncur = cur + 1; 2253 int ncur = cur + 1;
649 2254
650 do 2255 do
651 ncur <<= 1; 2256 ncur <<= 1;
652 while (cnt > ncur); 2257 while (cnt > ncur);
653 2258
654 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 2259 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
655 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 2260 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
656 { 2261 {
657 ncur *= elem; 2262 ncur *= elem;
658 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 2263 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
659 ncur = ncur - sizeof (void *) * 4; 2264 ncur = ncur - sizeof (void *) * 4;
… …
661 } 2266 }
662 2267
663 return ncur; 2268 return ncur;
664} 2269}
665 2270
666static noinline void * 2271ecb_noinline ecb_cold
2272static void *
667array_realloc (int elem, void *base, int *cur, int cnt) 2273array_realloc (int elem, void *base, int *cur, int cnt)
668{ 2274{
669 *cur = array_nextsize (elem, *cur, cnt); 2275 *cur = array_nextsize (elem, *cur, cnt);
670 return ev_realloc (base, elem * *cur); 2276 return ev_realloc (base, elem * *cur);
671} 2277}
672 2278
2279#define array_needsize_noinit(base,offset,count)
2280
673#define array_init_zero(base,count) \ 2281#define array_needsize_zerofill(base,offset,count) \
674 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 2282 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
675 2283
676#define array_needsize(type,base,cur,cnt,init) \ 2284#define array_needsize(type,base,cur,cnt,init) \
677 if (expect_false ((cnt) > (cur))) \ 2285 if (ecb_expect_false ((cnt) > (cur))) \
678 { \ 2286 { \
679 int ocur_ = (cur); \ 2287 ecb_unused int ocur_ = (cur); \
680 (base) = (type *)array_realloc \ 2288 (base) = (type *)array_realloc \
681 (sizeof (type), (base), &(cur), (cnt)); \ 2289 (sizeof (type), (base), &(cur), (cnt)); \
682 init ((base) + (ocur_), (cur) - ocur_); \ 2290 init ((base), ocur_, ((cur) - ocur_)); \
683 } 2291 }
684 2292
685#if 0 2293#if 0
686#define array_slim(type,stem) \ 2294#define array_slim(type,stem) \
687 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2295 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 2304 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
697 2305
698/*****************************************************************************/ 2306/*****************************************************************************/
699 2307
700/* dummy callback for pending events */ 2308/* dummy callback for pending events */
701static void noinline 2309ecb_noinline
2310static void
702pendingcb (EV_P_ ev_prepare *w, int revents) 2311pendingcb (EV_P_ ev_prepare *w, int revents)
703{ 2312{
704} 2313}
705 2314
706void noinline 2315ecb_noinline
2316void
707ev_feed_event (EV_P_ void *w, int revents) 2317ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
708{ 2318{
709 W w_ = (W)w; 2319 W w_ = (W)w;
710 int pri = ABSPRI (w_); 2320 int pri = ABSPRI (w_);
711 2321
712 if (expect_false (w_->pending)) 2322 if (ecb_expect_false (w_->pending))
713 pendings [pri][w_->pending - 1].events |= revents; 2323 pendings [pri][w_->pending - 1].events |= revents;
714 else 2324 else
715 { 2325 {
716 w_->pending = ++pendingcnt [pri]; 2326 w_->pending = ++pendingcnt [pri];
717 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2327 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
718 pendings [pri][w_->pending - 1].w = w_; 2328 pendings [pri][w_->pending - 1].w = w_;
719 pendings [pri][w_->pending - 1].events = revents; 2329 pendings [pri][w_->pending - 1].events = revents;
720 } 2330 }
2331
2332 pendingpri = NUMPRI - 1;
721} 2333}
722 2334
723inline_speed void 2335inline_speed void
724feed_reverse (EV_P_ W w) 2336feed_reverse (EV_P_ W w)
725{ 2337{
726 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2338 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
727 rfeeds [rfeedcnt++] = w; 2339 rfeeds [rfeedcnt++] = w;
728} 2340}
729 2341
730inline_size void 2342inline_size void
731feed_reverse_done (EV_P_ int revents) 2343feed_reverse_done (EV_P_ int revents)
… …
745} 2357}
746 2358
747/*****************************************************************************/ 2359/*****************************************************************************/
748 2360
749inline_speed void 2361inline_speed void
750fd_event (EV_P_ int fd, int revents) 2362fd_event_nocheck (EV_P_ int fd, int revents)
751{ 2363{
752 ANFD *anfd = anfds + fd; 2364 ANFD *anfd = anfds + fd;
753 ev_io *w; 2365 ev_io *w;
754 2366
755 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2367 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
759 if (ev) 2371 if (ev)
760 ev_feed_event (EV_A_ (W)w, ev); 2372 ev_feed_event (EV_A_ (W)w, ev);
761 } 2373 }
762} 2374}
763 2375
2376/* do not submit kernel events for fds that have reify set */
2377/* because that means they changed while we were polling for new events */
2378inline_speed void
2379fd_event (EV_P_ int fd, int revents)
2380{
2381 ANFD *anfd = anfds + fd;
2382
2383 if (ecb_expect_true (!anfd->reify))
2384 fd_event_nocheck (EV_A_ fd, revents);
2385}
2386
764void 2387void
765ev_feed_fd_event (EV_P_ int fd, int revents) 2388ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
766{ 2389{
767 if (fd >= 0 && fd < anfdmax) 2390 if (fd >= 0 && fd < anfdmax)
768 fd_event (EV_A_ fd, revents); 2391 fd_event_nocheck (EV_A_ fd, revents);
769} 2392}
770 2393
771/* make sure the external fd watch events are in-sync */ 2394/* make sure the external fd watch events are in-sync */
772/* with the kernel/libev internal state */ 2395/* with the kernel/libev internal state */
773inline_size void 2396inline_size void
774fd_reify (EV_P) 2397fd_reify (EV_P)
775{ 2398{
776 int i; 2399 int i;
777 2400
2401 /* most backends do not modify the fdchanges list in backend_modfiy.
2402 * except io_uring, which has fixed-size buffers which might force us
2403 * to handle events in backend_modify, causing fdchanges to be amended,
2404 * which could result in an endless loop.
2405 * to avoid this, we do not dynamically handle fds that were added
2406 * during fd_reify. that means that for those backends, fdchangecnt
2407 * might be non-zero during poll, which must cause them to not block.
2408 * to not put too much of a burden on other backends, this detail
2409 * needs to be handled in the backend.
2410 */
2411 int changecnt = fdchangecnt;
2412
2413#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
778 for (i = 0; i < fdchangecnt; ++i) 2414 for (i = 0; i < changecnt; ++i)
2415 {
2416 int fd = fdchanges [i];
2417 ANFD *anfd = anfds + fd;
2418
2419 if (anfd->reify & EV__IOFDSET && anfd->head)
2420 {
2421 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
2422
2423 if (handle != anfd->handle)
2424 {
2425 unsigned long arg;
2426
2427 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
2428
2429 /* handle changed, but fd didn't - we need to do it in two steps */
2430 backend_modify (EV_A_ fd, anfd->events, 0);
2431 anfd->events = 0;
2432 anfd->handle = handle;
2433 }
2434 }
2435 }
2436#endif
2437
2438 for (i = 0; i < changecnt; ++i)
779 { 2439 {
780 int fd = fdchanges [i]; 2440 int fd = fdchanges [i];
781 ANFD *anfd = anfds + fd; 2441 ANFD *anfd = anfds + fd;
782 ev_io *w; 2442 ev_io *w;
783 2443
784 unsigned char events = 0; 2444 unsigned char o_events = anfd->events;
2445 unsigned char o_reify = anfd->reify;
785 2446
786 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2447 anfd->reify = 0;
787 events |= (unsigned char)w->events;
788 2448
789#if EV_SELECT_IS_WINSOCKET 2449 /*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
790 if (events)
791 { 2450 {
792 unsigned long arg; 2451 anfd->events = 0;
793 #ifdef EV_FD_TO_WIN32_HANDLE 2452
794 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 2453 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
795 #else 2454 anfd->events |= (unsigned char)w->events;
796 anfd->handle = _get_osfhandle (fd); 2455
797 #endif 2456 if (o_events != anfd->events)
798 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 2457 o_reify = EV__IOFDSET; /* actually |= */
799 } 2458 }
800#endif
801 2459
802 { 2460 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); 2461 backend_modify (EV_A_ fd, o_events, anfd->events);
811 } 2462 }
812 }
813 2463
2464 /* normally, fdchangecnt hasn't changed. if it has, then new fds have been added.
2465 * this is a rare case (see beginning comment in this function), so we copy them to the
2466 * front and hope the backend handles this case.
2467 */
2468 if (ecb_expect_false (fdchangecnt != changecnt))
2469 memmove (fdchanges, fdchanges + changecnt, (fdchangecnt - changecnt) * sizeof (*fdchanges));
2470
814 fdchangecnt = 0; 2471 fdchangecnt -= changecnt;
815} 2472}
816 2473
817/* something about the given fd changed */ 2474/* something about the given fd changed */
818inline_size void 2475inline_size
2476void
819fd_change (EV_P_ int fd, int flags) 2477fd_change (EV_P_ int fd, int flags)
820{ 2478{
821 unsigned char reify = anfds [fd].reify; 2479 unsigned char reify = anfds [fd].reify;
822 anfds [fd].reify |= flags; 2480 anfds [fd].reify = reify | flags;
823 2481
824 if (expect_true (!reify)) 2482 if (ecb_expect_true (!reify))
825 { 2483 {
826 ++fdchangecnt; 2484 ++fdchangecnt;
827 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2485 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
828 fdchanges [fdchangecnt - 1] = fd; 2486 fdchanges [fdchangecnt - 1] = fd;
829 } 2487 }
830} 2488}
831 2489
832/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2490/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
833inline_speed void 2491inline_speed ecb_cold void
834fd_kill (EV_P_ int fd) 2492fd_kill (EV_P_ int fd)
835{ 2493{
836 ev_io *w; 2494 ev_io *w;
837 2495
838 while ((w = (ev_io *)anfds [fd].head)) 2496 while ((w = (ev_io *)anfds [fd].head))
… …
840 ev_io_stop (EV_A_ w); 2498 ev_io_stop (EV_A_ w);
841 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2499 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
842 } 2500 }
843} 2501}
844 2502
845/* check whether the given fd is atcually valid, for error recovery */ 2503/* check whether the given fd is actually valid, for error recovery */
846inline_size int 2504inline_size ecb_cold int
847fd_valid (int fd) 2505fd_valid (int fd)
848{ 2506{
849#ifdef _WIN32 2507#ifdef _WIN32
850 return _get_osfhandle (fd) != -1; 2508 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
851#else 2509#else
852 return fcntl (fd, F_GETFD) != -1; 2510 return fcntl (fd, F_GETFD) != -1;
853#endif 2511#endif
854} 2512}
855 2513
856/* called on EBADF to verify fds */ 2514/* called on EBADF to verify fds */
857static void noinline 2515ecb_noinline ecb_cold
2516static void
858fd_ebadf (EV_P) 2517fd_ebadf (EV_P)
859{ 2518{
860 int fd; 2519 int fd;
861 2520
862 for (fd = 0; fd < anfdmax; ++fd) 2521 for (fd = 0; fd < anfdmax; ++fd)
… …
864 if (!fd_valid (fd) && errno == EBADF) 2523 if (!fd_valid (fd) && errno == EBADF)
865 fd_kill (EV_A_ fd); 2524 fd_kill (EV_A_ fd);
866} 2525}
867 2526
868/* called on ENOMEM in select/poll to kill some fds and retry */ 2527/* called on ENOMEM in select/poll to kill some fds and retry */
869static void noinline 2528ecb_noinline ecb_cold
2529static void
870fd_enomem (EV_P) 2530fd_enomem (EV_P)
871{ 2531{
872 int fd; 2532 int fd;
873 2533
874 for (fd = anfdmax; fd--; ) 2534 for (fd = anfdmax; fd--; )
875 if (anfds [fd].events) 2535 if (anfds [fd].events)
876 { 2536 {
877 fd_kill (EV_A_ fd); 2537 fd_kill (EV_A_ fd);
878 return; 2538 break;
879 } 2539 }
880} 2540}
881 2541
882/* usually called after fork if backend needs to re-arm all fds from scratch */ 2542/* usually called after fork if backend needs to re-arm all fds from scratch */
883static void noinline 2543ecb_noinline
2544static void
884fd_rearm_all (EV_P) 2545fd_rearm_all (EV_P)
885{ 2546{
886 int fd; 2547 int fd;
887 2548
888 for (fd = 0; fd < anfdmax; ++fd) 2549 for (fd = 0; fd < anfdmax; ++fd)
889 if (anfds [fd].events) 2550 if (anfds [fd].events)
890 { 2551 {
891 anfds [fd].events = 0; 2552 anfds [fd].events = 0;
892 anfds [fd].emask = 0; 2553 anfds [fd].emask = 0;
893 fd_change (EV_A_ fd, EV__IOFDSET | 1); 2554 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
894 } 2555 }
895} 2556}
896 2557
2558/* used to prepare libev internal fd's */
2559/* this is not fork-safe */
2560inline_speed void
2561fd_intern (int fd)
2562{
2563#ifdef _WIN32
2564 unsigned long arg = 1;
2565 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
2566#else
2567 fcntl (fd, F_SETFD, FD_CLOEXEC);
2568 fcntl (fd, F_SETFL, O_NONBLOCK);
2569#endif
2570}
2571
897/*****************************************************************************/ 2572/*****************************************************************************/
898 2573
899/* 2574/*
900 * the heap functions want a real array index. array index 0 uis guaranteed to not 2575 * 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 2576 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
902 * the branching factor of the d-tree. 2577 * the branching factor of the d-tree.
903 */ 2578 */
904 2579
905/* 2580/*
… …
927 ev_tstamp minat; 2602 ev_tstamp minat;
928 ANHE *minpos; 2603 ANHE *minpos;
929 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; 2604 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
930 2605
931 /* find minimum child */ 2606 /* find minimum child */
932 if (expect_true (pos + DHEAP - 1 < E)) 2607 if (ecb_expect_true (pos + DHEAP - 1 < E))
933 { 2608 {
934 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2609 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
935 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2610 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)); 2611 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)); 2612 if ( minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
938 } 2613 }
939 else if (pos < E) 2614 else if (pos < E)
940 { 2615 {
941 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2616 /* 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)); 2617 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)); 2618 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)); 2619 if (pos + 3 < E && minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
945 } 2620 }
946 else 2621 else
947 break; 2622 break;
948 2623
949 if (ANHE_at (he) <= minat) 2624 if (ANHE_at (he) <= minat)
… …
957 2632
958 heap [k] = he; 2633 heap [k] = he;
959 ev_active (ANHE_w (he)) = k; 2634 ev_active (ANHE_w (he)) = k;
960} 2635}
961 2636
962#else /* 4HEAP */ 2637#else /* not 4HEAP */
963 2638
964#define HEAP0 1 2639#define HEAP0 1
965#define HPARENT(k) ((k) >> 1) 2640#define HPARENT(k) ((k) >> 1)
966#define UPHEAP_DONE(p,k) (!(p)) 2641#define UPHEAP_DONE(p,k) (!(p))
967 2642
… …
973 2648
974 for (;;) 2649 for (;;)
975 { 2650 {
976 int c = k << 1; 2651 int c = k << 1;
977 2652
978 if (c > N + HEAP0 - 1) 2653 if (c >= N + HEAP0)
979 break; 2654 break;
980 2655
981 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 2656 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
982 ? 1 : 0; 2657 ? 1 : 0;
983 2658
… …
1019 2694
1020/* move an element suitably so it is in a correct place */ 2695/* move an element suitably so it is in a correct place */
1021inline_size void 2696inline_size void
1022adjustheap (ANHE *heap, int N, int k) 2697adjustheap (ANHE *heap, int N, int k)
1023{ 2698{
1024 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 2699 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1025 upheap (heap, k); 2700 upheap (heap, k);
1026 else 2701 else
1027 downheap (heap, N, k); 2702 downheap (heap, N, k);
1028} 2703}
1029 2704
… …
1039 upheap (heap, i + HEAP0); 2714 upheap (heap, i + HEAP0);
1040} 2715}
1041 2716
1042/*****************************************************************************/ 2717/*****************************************************************************/
1043 2718
1044/* associate signal watchers to a signal signal */ 2719/* associate signal watchers to a signal */
1045typedef struct 2720typedef struct
1046{ 2721{
2722 EV_ATOMIC_T pending;
2723#if EV_MULTIPLICITY
2724 EV_P;
2725#endif
1047 WL head; 2726 WL head;
1048 EV_ATOMIC_T gotsig;
1049} ANSIG; 2727} ANSIG;
1050 2728
1051static ANSIG *signals; 2729static ANSIG signals [EV_NSIG - 1];
1052static int signalmax;
1053
1054static EV_ATOMIC_T gotsig;
1055 2730
1056/*****************************************************************************/ 2731/*****************************************************************************/
1057 2732
1058/* used to prepare libev internal fd's */ 2733#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1059/* this is not fork-safe */ 2734
2735ecb_noinline ecb_cold
2736static void
2737evpipe_init (EV_P)
2738{
2739 if (!ev_is_active (&pipe_w))
2740 {
2741 int fds [2];
2742
2743# if EV_USE_EVENTFD
2744 fds [0] = -1;
2745 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
2746 if (fds [1] < 0 && errno == EINVAL)
2747 fds [1] = eventfd (0, 0);
2748
2749 if (fds [1] < 0)
2750# endif
2751 {
2752 while (pipe (fds))
2753 ev_syserr ("(libev) error creating signal/async pipe");
2754
2755 fd_intern (fds [0]);
2756 }
2757
2758 evpipe [0] = fds [0];
2759
2760 if (evpipe [1] < 0)
2761 evpipe [1] = fds [1]; /* first call, set write fd */
2762 else
2763 {
2764 /* on subsequent calls, do not change evpipe [1] */
2765 /* so that evpipe_write can always rely on its value. */
2766 /* this branch does not do anything sensible on windows, */
2767 /* so must not be executed on windows */
2768
2769 dup2 (fds [1], evpipe [1]);
2770 close (fds [1]);
2771 }
2772
2773 fd_intern (evpipe [1]);
2774
2775 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2776 ev_io_start (EV_A_ &pipe_w);
2777 ev_unref (EV_A); /* watcher should not keep loop alive */
2778 }
2779}
2780
1060inline_speed void 2781inline_speed void
1061fd_intern (int fd) 2782evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1062{ 2783{
1063#ifdef _WIN32 2784 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 2785
1072static void noinline 2786 if (ecb_expect_true (*flag))
1073evpipe_init (EV_P) 2787 return;
1074{ 2788
1075 if (!ev_is_active (&pipe_w)) 2789 *flag = 1;
2790 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2791
2792 pipe_write_skipped = 1;
2793
2794 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2795
2796 if (pipe_write_wanted)
1076 { 2797 {
2798 int old_errno;
2799
2800 pipe_write_skipped = 0;
2801 ECB_MEMORY_FENCE_RELEASE;
2802
2803 old_errno = errno; /* save errno because write will clobber it */
2804
1077#if EV_USE_EVENTFD 2805#if EV_USE_EVENTFD
1078 if ((evfd = eventfd (0, 0)) >= 0) 2806 if (evpipe [0] < 0)
1079 { 2807 {
1080 evpipe [0] = -1; 2808 uint64_t counter = 1;
1081 fd_intern (evfd); 2809 write (evpipe [1], &counter, sizeof (uint64_t));
1082 ev_io_set (&pipe_w, evfd, EV_READ);
1083 } 2810 }
1084 else 2811 else
1085#endif 2812#endif
1086 { 2813 {
1087 while (pipe (evpipe)) 2814#ifdef _WIN32
1088 ev_syserr ("(libev) error creating signal/async pipe"); 2815 WSABUF buf;
1089 2816 DWORD sent;
1090 fd_intern (evpipe [0]); 2817 buf.buf = (char *)&buf;
1091 fd_intern (evpipe [1]); 2818 buf.len = 1;
1092 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2819 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2820#else
2821 write (evpipe [1], &(evpipe [1]), 1);
2822#endif
1093 } 2823 }
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 2824
1119 errno = old_errno; 2825 errno = old_errno;
1120 } 2826 }
1121} 2827}
1122 2828
1123/* called whenever the libev signal pipe */ 2829/* called whenever the libev signal pipe */
1124/* got some events (signal, async) */ 2830/* got some events (signal, async) */
1125static void 2831static void
1126pipecb (EV_P_ ev_io *iow, int revents) 2832pipecb (EV_P_ ev_io *iow, int revents)
1127{ 2833{
2834 int i;
2835
2836 if (revents & EV_READ)
2837 {
1128#if EV_USE_EVENTFD 2838#if EV_USE_EVENTFD
1129 if (evfd >= 0) 2839 if (evpipe [0] < 0)
1130 { 2840 {
1131 uint64_t counter; 2841 uint64_t counter;
1132 read (evfd, &counter, sizeof (uint64_t)); 2842 read (evpipe [1], &counter, sizeof (uint64_t));
1133 } 2843 }
1134 else 2844 else
1135#endif 2845#endif
1136 { 2846 {
1137 char dummy; 2847 char dummy[4];
2848#ifdef _WIN32
2849 WSABUF buf;
2850 DWORD recvd;
2851 DWORD flags = 0;
2852 buf.buf = dummy;
2853 buf.len = sizeof (dummy);
2854 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2855#else
1138 read (evpipe [0], &dummy, 1); 2856 read (evpipe [0], &dummy, sizeof (dummy));
2857#endif
2858 }
2859 }
2860
2861 pipe_write_skipped = 0;
2862
2863 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2864
2865#if EV_SIGNAL_ENABLE
2866 if (sig_pending)
1139 } 2867 {
2868 sig_pending = 0;
1140 2869
1141 if (gotsig && ev_is_default_loop (EV_A)) 2870 ECB_MEMORY_FENCE;
1142 {
1143 int signum;
1144 gotsig = 0;
1145 2871
1146 for (signum = signalmax; signum--; ) 2872 for (i = EV_NSIG - 1; i--; )
1147 if (signals [signum].gotsig) 2873 if (ecb_expect_false (signals [i].pending))
1148 ev_feed_signal_event (EV_A_ signum + 1); 2874 ev_feed_signal_event (EV_A_ i + 1);
1149 } 2875 }
2876#endif
1150 2877
1151#if EV_ASYNC_ENABLE 2878#if EV_ASYNC_ENABLE
1152 if (gotasync) 2879 if (async_pending)
1153 { 2880 {
1154 int i; 2881 async_pending = 0;
1155 gotasync = 0; 2882
2883 ECB_MEMORY_FENCE;
1156 2884
1157 for (i = asynccnt; i--; ) 2885 for (i = asynccnt; i--; )
1158 if (asyncs [i]->sent) 2886 if (asyncs [i]->sent)
1159 { 2887 {
1160 asyncs [i]->sent = 0; 2888 asyncs [i]->sent = 0;
2889 ECB_MEMORY_FENCE_RELEASE;
1161 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2890 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1162 } 2891 }
1163 } 2892 }
1164#endif 2893#endif
1165} 2894}
1166 2895
1167/*****************************************************************************/ 2896/*****************************************************************************/
1168 2897
2898void
2899ev_feed_signal (int signum) EV_NOEXCEPT
2900{
2901#if EV_MULTIPLICITY
2902 EV_P;
2903 ECB_MEMORY_FENCE_ACQUIRE;
2904 EV_A = signals [signum - 1].loop;
2905
2906 if (!EV_A)
2907 return;
2908#endif
2909
2910 signals [signum - 1].pending = 1;
2911 evpipe_write (EV_A_ &sig_pending);
2912}
2913
1169static void 2914static void
1170ev_sighandler (int signum) 2915ev_sighandler (int signum)
1171{ 2916{
2917#ifdef _WIN32
2918 signal (signum, ev_sighandler);
2919#endif
2920
2921 ev_feed_signal (signum);
2922}
2923
2924ecb_noinline
2925void
2926ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
2927{
2928 WL w;
2929
2930 if (ecb_expect_false (signum <= 0 || signum >= EV_NSIG))
2931 return;
2932
2933 --signum;
2934
1172#if EV_MULTIPLICITY 2935#if EV_MULTIPLICITY
1173 struct ev_loop *loop = &default_loop_struct; 2936 /* it is permissible to try to feed a signal to the wrong loop */
1174#endif 2937 /* or, likely more useful, feeding a signal nobody is waiting for */
1175 2938
1176#if _WIN32 2939 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; 2940 return;
2941#endif
1197 2942
1198 signals [signum].gotsig = 0; 2943 signals [signum].pending = 0;
2944 ECB_MEMORY_FENCE_RELEASE;
1199 2945
1200 for (w = signals [signum].head; w; w = w->next) 2946 for (w = signals [signum].head; w; w = w->next)
1201 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2947 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1202} 2948}
1203 2949
2950#if EV_USE_SIGNALFD
2951static void
2952sigfdcb (EV_P_ ev_io *iow, int revents)
2953{
2954 struct signalfd_siginfo si[2], *sip; /* these structs are big */
2955
2956 for (;;)
2957 {
2958 ssize_t res = read (sigfd, si, sizeof (si));
2959
2960 /* not ISO-C, as res might be -1, but works with SuS */
2961 for (sip = si; (char *)sip < (char *)si + res; ++sip)
2962 ev_feed_signal_event (EV_A_ sip->ssi_signo);
2963
2964 if (res < (ssize_t)sizeof (si))
2965 break;
2966 }
2967}
2968#endif
2969
2970#endif
2971
1204/*****************************************************************************/ 2972/*****************************************************************************/
1205 2973
2974#if EV_CHILD_ENABLE
1206static WL childs [EV_PID_HASHSIZE]; 2975static WL childs [EV_PID_HASHSIZE];
1207
1208#ifndef _WIN32
1209 2976
1210static ev_signal childev; 2977static ev_signal childev;
1211 2978
1212#ifndef WIFCONTINUED 2979#ifndef WIFCONTINUED
1213# define WIFCONTINUED(status) 0 2980# define WIFCONTINUED(status) 0
… …
1218child_reap (EV_P_ int chain, int pid, int status) 2985child_reap (EV_P_ int chain, int pid, int status)
1219{ 2986{
1220 ev_child *w; 2987 ev_child *w;
1221 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2988 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1222 2989
1223 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2990 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1224 { 2991 {
1225 if ((w->pid == pid || !w->pid) 2992 if ((w->pid == pid || !w->pid)
1226 && (!traced || (w->flags & 1))) 2993 && (!traced || (w->flags & 1)))
1227 { 2994 {
1228 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2995 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 */ 3020 /* 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 */ 3021 /* 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); 3022 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1256 3023
1257 child_reap (EV_A_ pid, pid, status); 3024 child_reap (EV_A_ pid, pid, status);
1258 if (EV_PID_HASHSIZE > 1) 3025 if ((EV_PID_HASHSIZE) > 1)
1259 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 3026 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1260} 3027}
1261 3028
1262#endif 3029#endif
1263 3030
1264/*****************************************************************************/ 3031/*****************************************************************************/
1265 3032
3033#if EV_USE_TIMERFD
3034
3035static void periodics_reschedule (EV_P);
3036
3037static void
3038timerfdcb (EV_P_ ev_io *iow, int revents)
3039{
3040 struct itimerspec its = { 0 };
3041
3042 its.it_value.tv_sec = ev_rt_now + (int)MAX_BLOCKTIME2;
3043 timerfd_settime (timerfd, TFD_TIMER_ABSTIME | TFD_TIMER_CANCEL_ON_SET, &its, 0);
3044
3045 ev_rt_now = ev_time ();
3046 /* periodics_reschedule only needs ev_rt_now */
3047 /* but maybe in the future we want the full treatment. */
3048 /*
3049 now_floor = EV_TS_CONST (0.);
3050 time_update (EV_A_ EV_TSTAMP_HUGE);
3051 */
3052#if EV_PERIODIC_ENABLE
3053 periodics_reschedule (EV_A);
3054#endif
3055}
3056
3057ecb_noinline ecb_cold
3058static void
3059evtimerfd_init (EV_P)
3060{
3061 if (!ev_is_active (&timerfd_w))
3062 {
3063 timerfd = timerfd_create (CLOCK_REALTIME, TFD_NONBLOCK | TFD_CLOEXEC);
3064
3065 if (timerfd >= 0)
3066 {
3067 fd_intern (timerfd); /* just to be sure */
3068
3069 ev_io_init (&timerfd_w, timerfdcb, timerfd, EV_READ);
3070 ev_set_priority (&timerfd_w, EV_MINPRI);
3071 ev_io_start (EV_A_ &timerfd_w);
3072 ev_unref (EV_A); /* watcher should not keep loop alive */
3073
3074 /* (re-) arm timer */
3075 timerfdcb (EV_A_ 0, 0);
3076 }
3077 }
3078}
3079
3080#endif
3081
3082/*****************************************************************************/
3083
3084#if EV_USE_IOCP
3085# include "ev_iocp.c"
3086#endif
1266#if EV_USE_PORT 3087#if EV_USE_PORT
1267# include "ev_port.c" 3088# include "ev_port.c"
1268#endif 3089#endif
1269#if EV_USE_KQUEUE 3090#if EV_USE_KQUEUE
1270# include "ev_kqueue.c" 3091# include "ev_kqueue.c"
1271#endif 3092#endif
1272#if EV_USE_EPOLL 3093#if EV_USE_EPOLL
1273# include "ev_epoll.c" 3094# include "ev_epoll.c"
1274#endif 3095#endif
3096#if EV_USE_LINUXAIO
3097# include "ev_linuxaio.c"
3098#endif
3099#if EV_USE_IOURING
3100# include "ev_iouring.c"
3101#endif
1275#if EV_USE_POLL 3102#if EV_USE_POLL
1276# include "ev_poll.c" 3103# include "ev_poll.c"
1277#endif 3104#endif
1278#if EV_USE_SELECT 3105#if EV_USE_SELECT
1279# include "ev_select.c" 3106# include "ev_select.c"
1280#endif 3107#endif
1281 3108
1282int 3109ecb_cold int
1283ev_version_major (void) 3110ev_version_major (void) EV_NOEXCEPT
1284{ 3111{
1285 return EV_VERSION_MAJOR; 3112 return EV_VERSION_MAJOR;
1286} 3113}
1287 3114
1288int 3115ecb_cold int
1289ev_version_minor (void) 3116ev_version_minor (void) EV_NOEXCEPT
1290{ 3117{
1291 return EV_VERSION_MINOR; 3118 return EV_VERSION_MINOR;
1292} 3119}
1293 3120
1294/* return true if we are running with elevated privileges and should ignore env variables */ 3121/* return true if we are running with elevated privileges and should ignore env variables */
1295int inline_size 3122inline_size ecb_cold int
1296enable_secure (void) 3123enable_secure (void)
1297{ 3124{
1298#ifdef _WIN32 3125#ifdef _WIN32
1299 return 0; 3126 return 0;
1300#else 3127#else
1301 return getuid () != geteuid () 3128 return getuid () != geteuid ()
1302 || getgid () != getegid (); 3129 || getgid () != getegid ();
1303#endif 3130#endif
1304} 3131}
1305 3132
3133ecb_cold
1306unsigned int 3134unsigned int
1307ev_supported_backends (void) 3135ev_supported_backends (void) EV_NOEXCEPT
1308{ 3136{
1309 unsigned int flags = 0; 3137 unsigned int flags = 0;
1310 3138
1311 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 3139 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1312 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 3140 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
1313 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 3141 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
1314 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 3142 if (EV_USE_LINUXAIO ) flags |= EVBACKEND_LINUXAIO;
1315 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 3143 if (EV_USE_IOURING && ev_linux_version () >= 0x050601) flags |= EVBACKEND_IOURING; /* 5.6.1+ */
1316 3144 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
3145 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
3146
1317 return flags; 3147 return flags;
1318} 3148}
1319 3149
3150ecb_cold
1320unsigned int 3151unsigned int
1321ev_recommended_backends (void) 3152ev_recommended_backends (void) EV_NOEXCEPT
1322{ 3153{
1323 unsigned int flags = ev_supported_backends (); 3154 unsigned int flags = ev_supported_backends ();
1324 3155
1325#ifndef __NetBSD__ 3156#ifndef __NetBSD__
1326 /* kqueue is borked on everything but netbsd apparently */ 3157 /* kqueue is borked on everything but netbsd apparently */
… …
1330#ifdef __APPLE__ 3161#ifdef __APPLE__
1331 /* only select works correctly on that "unix-certified" platform */ 3162 /* only select works correctly on that "unix-certified" platform */
1332 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 3163 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1333 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 3164 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1334#endif 3165#endif
3166#ifdef __FreeBSD__
3167 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
3168#endif
3169
3170 /* TODO: linuxaio is very experimental */
3171#if !EV_RECOMMEND_LINUXAIO
3172 flags &= ~EVBACKEND_LINUXAIO;
3173#endif
3174 /* TODO: iouring is super experimental */
3175#if !EV_RECOMMEND_IOURING
3176 flags &= ~EVBACKEND_IOURING;
3177#endif
1335 3178
1336 return flags; 3179 return flags;
1337} 3180}
1338 3181
3182ecb_cold
1339unsigned int 3183unsigned int
1340ev_embeddable_backends (void) 3184ev_embeddable_backends (void) EV_NOEXCEPT
1341{ 3185{
1342 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 3186 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT | EVBACKEND_IOURING;
1343 3187
1344 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 3188 /* 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 */ 3189 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1346 flags &= ~EVBACKEND_EPOLL; 3190 flags &= ~EVBACKEND_EPOLL;
3191
3192 /* EVBACKEND_LINUXAIO is theoretically embeddable, but suffers from a performance overhead */
1347 3193
1348 return flags; 3194 return flags;
1349} 3195}
1350 3196
1351unsigned int 3197unsigned int
1352ev_backend (EV_P) 3198ev_backend (EV_P) EV_NOEXCEPT
1353{ 3199{
1354 return backend; 3200 return backend;
1355} 3201}
1356 3202
3203#if EV_FEATURE_API
1357unsigned int 3204unsigned int
1358ev_loop_count (EV_P) 3205ev_iteration (EV_P) EV_NOEXCEPT
1359{ 3206{
1360 return loop_count; 3207 return loop_count;
1361} 3208}
1362 3209
3210unsigned int
3211ev_depth (EV_P) EV_NOEXCEPT
3212{
3213 return loop_depth;
3214}
3215
1363void 3216void
1364ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 3217ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1365{ 3218{
1366 io_blocktime = interval; 3219 io_blocktime = interval;
1367} 3220}
1368 3221
1369void 3222void
1370ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 3223ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1371{ 3224{
1372 timeout_blocktime = interval; 3225 timeout_blocktime = interval;
1373} 3226}
1374 3227
3228void
3229ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
3230{
3231 userdata = data;
3232}
3233
3234void *
3235ev_userdata (EV_P) EV_NOEXCEPT
3236{
3237 return userdata;
3238}
3239
3240void
3241ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
3242{
3243 invoke_cb = invoke_pending_cb;
3244}
3245
3246void
3247ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
3248{
3249 release_cb = release;
3250 acquire_cb = acquire;
3251}
3252#endif
3253
1375/* initialise a loop structure, must be zero-initialised */ 3254/* initialise a loop structure, must be zero-initialised */
1376static void noinline 3255ecb_noinline ecb_cold
3256static void
1377loop_init (EV_P_ unsigned int flags) 3257loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
1378{ 3258{
1379 if (!backend) 3259 if (!backend)
1380 { 3260 {
3261 origflags = flags;
3262
1381#if EV_USE_REALTIME 3263#if EV_USE_REALTIME
1382 if (!have_realtime) 3264 if (!have_realtime)
1383 { 3265 {
1384 struct timespec ts; 3266 struct timespec ts;
1385 3267
… …
1396 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 3278 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1397 have_monotonic = 1; 3279 have_monotonic = 1;
1398 } 3280 }
1399#endif 3281#endif
1400 3282
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 */ 3283 /* pid check not overridable via env */
1416#ifndef _WIN32 3284#ifndef _WIN32
1417 if (flags & EVFLAG_FORKCHECK) 3285 if (flags & EVFLAG_FORKCHECK)
1418 curpid = getpid (); 3286 curpid = getpid ();
1419#endif 3287#endif
… …
1421 if (!(flags & EVFLAG_NOENV) 3289 if (!(flags & EVFLAG_NOENV)
1422 && !enable_secure () 3290 && !enable_secure ()
1423 && getenv ("LIBEV_FLAGS")) 3291 && getenv ("LIBEV_FLAGS"))
1424 flags = atoi (getenv ("LIBEV_FLAGS")); 3292 flags = atoi (getenv ("LIBEV_FLAGS"));
1425 3293
1426 if (!(flags & 0x0000ffffU)) 3294 ev_rt_now = ev_time ();
3295 mn_now = get_clock ();
3296 now_floor = mn_now;
3297 rtmn_diff = ev_rt_now - mn_now;
3298#if EV_FEATURE_API
3299 invoke_cb = ev_invoke_pending;
3300#endif
3301
3302 io_blocktime = 0.;
3303 timeout_blocktime = 0.;
3304 backend = 0;
3305 backend_fd = -1;
3306 sig_pending = 0;
3307#if EV_ASYNC_ENABLE
3308 async_pending = 0;
3309#endif
3310 pipe_write_skipped = 0;
3311 pipe_write_wanted = 0;
3312 evpipe [0] = -1;
3313 evpipe [1] = -1;
3314#if EV_USE_INOTIFY
3315 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
3316#endif
3317#if EV_USE_SIGNALFD
3318 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
3319#endif
3320#if EV_USE_TIMERFD
3321 timerfd = flags & EVFLAG_NOTIMERFD ? -1 : -2;
3322#endif
3323
3324 if (!(flags & EVBACKEND_MASK))
1427 flags |= ev_recommended_backends (); 3325 flags |= ev_recommended_backends ();
1428 3326
3327#if EV_USE_IOCP
3328 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
3329#endif
1429#if EV_USE_PORT 3330#if EV_USE_PORT
1430 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 3331 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1431#endif 3332#endif
1432#if EV_USE_KQUEUE 3333#if EV_USE_KQUEUE
1433 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 3334 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
3335#endif
3336#if EV_USE_IOURING
3337 if (!backend && (flags & EVBACKEND_IOURING )) backend = iouring_init (EV_A_ flags);
3338#endif
3339#if EV_USE_LINUXAIO
3340 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
1434#endif 3341#endif
1435#if EV_USE_EPOLL 3342#if EV_USE_EPOLL
1436 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 3343 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
1437#endif 3344#endif
1438#if EV_USE_POLL 3345#if EV_USE_POLL
1439 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 3346 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
1440#endif 3347#endif
1441#if EV_USE_SELECT 3348#if EV_USE_SELECT
1442 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 3349 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
1443#endif 3350#endif
1444 3351
1445 ev_prepare_init (&pending_w, pendingcb); 3352 ev_prepare_init (&pending_w, pendingcb);
1446 3353
3354#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1447 ev_init (&pipe_w, pipecb); 3355 ev_init (&pipe_w, pipecb);
1448 ev_set_priority (&pipe_w, EV_MAXPRI); 3356 ev_set_priority (&pipe_w, EV_MAXPRI);
3357#endif
1449 } 3358 }
1450} 3359}
1451 3360
1452/* free up a loop structure */ 3361/* free up a loop structure */
1453static void noinline 3362ecb_cold
3363void
1454loop_destroy (EV_P) 3364ev_loop_destroy (EV_P)
1455{ 3365{
1456 int i; 3366 int i;
1457 3367
3368#if EV_MULTIPLICITY
3369 /* mimic free (0) */
3370 if (!EV_A)
3371 return;
3372#endif
3373
3374#if EV_CLEANUP_ENABLE
3375 /* queue cleanup watchers (and execute them) */
3376 if (ecb_expect_false (cleanupcnt))
3377 {
3378 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
3379 EV_INVOKE_PENDING;
3380 }
3381#endif
3382
3383#if EV_CHILD_ENABLE
3384 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
3385 {
3386 ev_ref (EV_A); /* child watcher */
3387 ev_signal_stop (EV_A_ &childev);
3388 }
3389#endif
3390
1458 if (ev_is_active (&pipe_w)) 3391 if (ev_is_active (&pipe_w))
1459 { 3392 {
1460 ev_ref (EV_A); /* signal watcher */ 3393 /*ev_ref (EV_A);*/
1461 ev_io_stop (EV_A_ &pipe_w); 3394 /*ev_io_stop (EV_A_ &pipe_w);*/
1462 3395
3396 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
3397 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
3398 }
3399
3400#if EV_USE_SIGNALFD
3401 if (ev_is_active (&sigfd_w))
3402 close (sigfd);
3403#endif
3404
1463#if EV_USE_EVENTFD 3405#if EV_USE_TIMERFD
1464 if (evfd >= 0) 3406 if (ev_is_active (&timerfd_w))
1465 close (evfd); 3407 close (timerfd);
1466#endif 3408#endif
1467
1468 if (evpipe [0] >= 0)
1469 {
1470 close (evpipe [0]);
1471 close (evpipe [1]);
1472 }
1473 }
1474 3409
1475#if EV_USE_INOTIFY 3410#if EV_USE_INOTIFY
1476 if (fs_fd >= 0) 3411 if (fs_fd >= 0)
1477 close (fs_fd); 3412 close (fs_fd);
1478#endif 3413#endif
1479 3414
1480 if (backend_fd >= 0) 3415 if (backend_fd >= 0)
1481 close (backend_fd); 3416 close (backend_fd);
1482 3417
3418#if EV_USE_IOCP
3419 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
3420#endif
1483#if EV_USE_PORT 3421#if EV_USE_PORT
1484 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3422 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1485#endif 3423#endif
1486#if EV_USE_KQUEUE 3424#if EV_USE_KQUEUE
1487 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3425 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
3426#endif
3427#if EV_USE_IOURING
3428 if (backend == EVBACKEND_IOURING ) iouring_destroy (EV_A);
3429#endif
3430#if EV_USE_LINUXAIO
3431 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
1488#endif 3432#endif
1489#if EV_USE_EPOLL 3433#if EV_USE_EPOLL
1490 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3434 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
1491#endif 3435#endif
1492#if EV_USE_POLL 3436#if EV_USE_POLL
1493 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3437 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
1494#endif 3438#endif
1495#if EV_USE_SELECT 3439#if EV_USE_SELECT
1496 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3440 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
1497#endif 3441#endif
1498 3442
1499 for (i = NUMPRI; i--; ) 3443 for (i = NUMPRI; i--; )
1500 { 3444 {
1501 array_free (pending, [i]); 3445 array_free (pending, [i]);
1502#if EV_IDLE_ENABLE 3446#if EV_IDLE_ENABLE
1503 array_free (idle, [i]); 3447 array_free (idle, [i]);
1504#endif 3448#endif
1505 } 3449 }
1506 3450
1507 ev_free (anfds); anfdmax = 0; 3451 ev_free (anfds); anfds = 0; anfdmax = 0;
1508 3452
1509 /* have to use the microsoft-never-gets-it-right macro */ 3453 /* have to use the microsoft-never-gets-it-right macro */
1510 array_free (rfeed, EMPTY); 3454 array_free (rfeed, EMPTY);
1511 array_free (fdchange, EMPTY); 3455 array_free (fdchange, EMPTY);
1512 array_free (timer, EMPTY); 3456 array_free (timer, EMPTY);
… …
1514 array_free (periodic, EMPTY); 3458 array_free (periodic, EMPTY);
1515#endif 3459#endif
1516#if EV_FORK_ENABLE 3460#if EV_FORK_ENABLE
1517 array_free (fork, EMPTY); 3461 array_free (fork, EMPTY);
1518#endif 3462#endif
3463#if EV_CLEANUP_ENABLE
3464 array_free (cleanup, EMPTY);
3465#endif
1519 array_free (prepare, EMPTY); 3466 array_free (prepare, EMPTY);
1520 array_free (check, EMPTY); 3467 array_free (check, EMPTY);
1521#if EV_ASYNC_ENABLE 3468#if EV_ASYNC_ENABLE
1522 array_free (async, EMPTY); 3469 array_free (async, EMPTY);
1523#endif 3470#endif
1524 3471
1525 backend = 0; 3472 backend = 0;
3473
3474#if EV_MULTIPLICITY
3475 if (ev_is_default_loop (EV_A))
3476#endif
3477 ev_default_loop_ptr = 0;
3478#if EV_MULTIPLICITY
3479 else
3480 ev_free (EV_A);
3481#endif
1526} 3482}
1527 3483
1528#if EV_USE_INOTIFY 3484#if EV_USE_INOTIFY
1529inline_size void infy_fork (EV_P); 3485inline_size void infy_fork (EV_P);
1530#endif 3486#endif
1531 3487
1532inline_size void 3488inline_size void
1533loop_fork (EV_P) 3489loop_fork (EV_P)
1534{ 3490{
1535#if EV_USE_PORT 3491#if EV_USE_PORT
1536 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3492 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1537#endif 3493#endif
1538#if EV_USE_KQUEUE 3494#if EV_USE_KQUEUE
1539 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 3495 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
3496#endif
3497#if EV_USE_IOURING
3498 if (backend == EVBACKEND_IOURING ) iouring_fork (EV_A);
3499#endif
3500#if EV_USE_LINUXAIO
3501 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
1540#endif 3502#endif
1541#if EV_USE_EPOLL 3503#if EV_USE_EPOLL
1542 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3504 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
1543#endif 3505#endif
1544#if EV_USE_INOTIFY 3506#if EV_USE_INOTIFY
1545 infy_fork (EV_A); 3507 infy_fork (EV_A);
1546#endif 3508#endif
1547 3509
3510 if (postfork != 2)
3511 {
3512 #if EV_USE_SIGNALFD
3513 /* surprisingly, nothing needs to be done for signalfd, accoridng to docs, it does the right thing on fork */
3514 #endif
3515
3516 #if EV_USE_TIMERFD
3517 if (ev_is_active (&timerfd_w))
3518 {
3519 ev_ref (EV_A);
3520 ev_io_stop (EV_A_ &timerfd_w);
3521
3522 close (timerfd);
3523 timerfd = -2;
3524
3525 evtimerfd_init (EV_A);
3526 /* reschedule periodics, in case we missed something */
3527 ev_feed_event (EV_A_ &timerfd_w, EV_CUSTOM);
3528 }
3529 #endif
3530
3531 #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1548 if (ev_is_active (&pipe_w)) 3532 if (ev_is_active (&pipe_w))
1549 { 3533 {
1550 /* this "locks" the handlers against writing to the pipe */ 3534 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1551 /* while we modify the fd vars */ 3535
1552 gotsig = 1;
1553#if EV_ASYNC_ENABLE
1554 gotasync = 1;
1555#endif
1556
1557 ev_ref (EV_A); 3536 ev_ref (EV_A);
1558 ev_io_stop (EV_A_ &pipe_w); 3537 ev_io_stop (EV_A_ &pipe_w);
1559 3538
1560#if EV_USE_EVENTFD
1561 if (evfd >= 0)
1562 close (evfd);
1563#endif
1564
1565 if (evpipe [0] >= 0) 3539 if (evpipe [0] >= 0)
3540 EV_WIN32_CLOSE_FD (evpipe [0]);
1566 { 3541
1567 close (evpipe [0]); 3542 evpipe_init (EV_A);
1568 close (evpipe [1]); 3543 /* iterate over everything, in case we missed something before */
3544 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1569 } 3545 }
1570 3546 #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 } 3547 }
1575 3548
1576 postfork = 0; 3549 postfork = 0;
1577} 3550}
1578 3551
1579#if EV_MULTIPLICITY 3552#if EV_MULTIPLICITY
1580 3553
3554ecb_cold
1581struct ev_loop * 3555struct ev_loop *
1582ev_loop_new (unsigned int flags) 3556ev_loop_new (unsigned int flags) EV_NOEXCEPT
1583{ 3557{
1584 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3558 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1585 3559
1586 memset (loop, 0, sizeof (struct ev_loop)); 3560 memset (EV_A, 0, sizeof (struct ev_loop));
1587
1588 loop_init (EV_A_ flags); 3561 loop_init (EV_A_ flags);
1589 3562
1590 if (ev_backend (EV_A)) 3563 if (ev_backend (EV_A))
1591 return loop; 3564 return EV_A;
1592 3565
3566 ev_free (EV_A);
1593 return 0; 3567 return 0;
1594} 3568}
1595 3569
1596void 3570#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 3571
1609#if EV_VERIFY 3572#if EV_VERIFY
1610static void noinline 3573ecb_noinline ecb_cold
3574static void
1611verify_watcher (EV_P_ W w) 3575verify_watcher (EV_P_ W w)
1612{ 3576{
1613 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3577 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1614 3578
1615 if (w->pending) 3579 if (w->pending)
1616 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3580 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1617} 3581}
1618 3582
1619static void noinline 3583ecb_noinline ecb_cold
3584static void
1620verify_heap (EV_P_ ANHE *heap, int N) 3585verify_heap (EV_P_ ANHE *heap, int N)
1621{ 3586{
1622 int i; 3587 int i;
1623 3588
1624 for (i = HEAP0; i < N + HEAP0; ++i) 3589 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1629 3594
1630 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3595 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1631 } 3596 }
1632} 3597}
1633 3598
1634static void noinline 3599ecb_noinline ecb_cold
3600static void
1635array_verify (EV_P_ W *ws, int cnt) 3601array_verify (EV_P_ W *ws, int cnt)
1636{ 3602{
1637 while (cnt--) 3603 while (cnt--)
1638 { 3604 {
1639 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3605 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1640 verify_watcher (EV_A_ ws [cnt]); 3606 verify_watcher (EV_A_ ws [cnt]);
1641 } 3607 }
1642} 3608}
1643#endif 3609#endif
1644 3610
1645void 3611#if EV_FEATURE_API
1646ev_loop_verify (EV_P) 3612void ecb_cold
3613ev_verify (EV_P) EV_NOEXCEPT
1647{ 3614{
1648#if EV_VERIFY 3615#if EV_VERIFY
1649 int i; 3616 int i;
1650 WL w; 3617 WL w, w2;
1651 3618
1652 assert (activecnt >= -1); 3619 assert (activecnt >= -1);
1653 3620
1654 assert (fdchangemax >= fdchangecnt); 3621 assert (fdchangemax >= fdchangecnt);
1655 for (i = 0; i < fdchangecnt; ++i) 3622 for (i = 0; i < fdchangecnt; ++i)
1656 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3623 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1657 3624
1658 assert (anfdmax >= 0); 3625 assert (anfdmax >= 0);
1659 for (i = 0; i < anfdmax; ++i) 3626 for (i = 0; i < anfdmax; ++i)
3627 {
3628 int j = 0;
3629
1660 for (w = anfds [i].head; w; w = w->next) 3630 for (w = w2 = anfds [i].head; w; w = w->next)
1661 { 3631 {
1662 verify_watcher (EV_A_ (W)w); 3632 verify_watcher (EV_A_ (W)w);
3633
3634 if (j++ & 1)
3635 {
3636 assert (("libev: io watcher list contains a loop", w != w2));
3637 w2 = w2->next;
3638 }
3639
1663 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3640 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)); 3641 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1665 } 3642 }
3643 }
1666 3644
1667 assert (timermax >= timercnt); 3645 assert (timermax >= timercnt);
1668 verify_heap (EV_A_ timers, timercnt); 3646 verify_heap (EV_A_ timers, timercnt);
1669 3647
1670#if EV_PERIODIC_ENABLE 3648#if EV_PERIODIC_ENABLE
… …
1685#if EV_FORK_ENABLE 3663#if EV_FORK_ENABLE
1686 assert (forkmax >= forkcnt); 3664 assert (forkmax >= forkcnt);
1687 array_verify (EV_A_ (W *)forks, forkcnt); 3665 array_verify (EV_A_ (W *)forks, forkcnt);
1688#endif 3666#endif
1689 3667
3668#if EV_CLEANUP_ENABLE
3669 assert (cleanupmax >= cleanupcnt);
3670 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
3671#endif
3672
1690#if EV_ASYNC_ENABLE 3673#if EV_ASYNC_ENABLE
1691 assert (asyncmax >= asynccnt); 3674 assert (asyncmax >= asynccnt);
1692 array_verify (EV_A_ (W *)asyncs, asynccnt); 3675 array_verify (EV_A_ (W *)asyncs, asynccnt);
1693#endif 3676#endif
1694 3677
3678#if EV_PREPARE_ENABLE
1695 assert (preparemax >= preparecnt); 3679 assert (preparemax >= preparecnt);
1696 array_verify (EV_A_ (W *)prepares, preparecnt); 3680 array_verify (EV_A_ (W *)prepares, preparecnt);
3681#endif
1697 3682
3683#if EV_CHECK_ENABLE
1698 assert (checkmax >= checkcnt); 3684 assert (checkmax >= checkcnt);
1699 array_verify (EV_A_ (W *)checks, checkcnt); 3685 array_verify (EV_A_ (W *)checks, checkcnt);
3686#endif
1700 3687
1701# if 0 3688# if 0
3689#if EV_CHILD_ENABLE
1702 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 3690 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) 3691 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
3692#endif
1704# endif 3693# endif
1705#endif 3694#endif
1706} 3695}
1707 3696#endif
1708#endif /* multiplicity */
1709 3697
1710#if EV_MULTIPLICITY 3698#if EV_MULTIPLICITY
3699ecb_cold
1711struct ev_loop * 3700struct ev_loop *
1712ev_default_loop_init (unsigned int flags)
1713#else 3701#else
1714int 3702int
3703#endif
1715ev_default_loop (unsigned int flags) 3704ev_default_loop (unsigned int flags) EV_NOEXCEPT
1716#endif
1717{ 3705{
1718 if (!ev_default_loop_ptr) 3706 if (!ev_default_loop_ptr)
1719 { 3707 {
1720#if EV_MULTIPLICITY 3708#if EV_MULTIPLICITY
1721 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 3709 EV_P = ev_default_loop_ptr = &default_loop_struct;
1722#else 3710#else
1723 ev_default_loop_ptr = 1; 3711 ev_default_loop_ptr = 1;
1724#endif 3712#endif
1725 3713
1726 loop_init (EV_A_ flags); 3714 loop_init (EV_A_ flags);
1727 3715
1728 if (ev_backend (EV_A)) 3716 if (ev_backend (EV_A))
1729 { 3717 {
1730#ifndef _WIN32 3718#if EV_CHILD_ENABLE
1731 ev_signal_init (&childev, childcb, SIGCHLD); 3719 ev_signal_init (&childev, childcb, SIGCHLD);
1732 ev_set_priority (&childev, EV_MAXPRI); 3720 ev_set_priority (&childev, EV_MAXPRI);
1733 ev_signal_start (EV_A_ &childev); 3721 ev_signal_start (EV_A_ &childev);
1734 ev_unref (EV_A); /* child watcher should not keep loop alive */ 3722 ev_unref (EV_A); /* child watcher should not keep loop alive */
1735#endif 3723#endif
… …
1740 3728
1741 return ev_default_loop_ptr; 3729 return ev_default_loop_ptr;
1742} 3730}
1743 3731
1744void 3732void
1745ev_default_destroy (void) 3733ev_loop_fork (EV_P) EV_NOEXCEPT
1746{ 3734{
1747#if EV_MULTIPLICITY 3735 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} 3736}
1770 3737
1771/*****************************************************************************/ 3738/*****************************************************************************/
1772 3739
1773void 3740void
1774ev_invoke (EV_P_ void *w, int revents) 3741ev_invoke (EV_P_ void *w, int revents)
1775{ 3742{
1776 EV_CB_INVOKE ((W)w, revents); 3743 EV_CB_INVOKE ((W)w, revents);
1777} 3744}
1778 3745
1779inline_speed void 3746unsigned int
1780call_pending (EV_P) 3747ev_pending_count (EV_P) EV_NOEXCEPT
1781{ 3748{
1782 int pri; 3749 int pri;
3750 unsigned int count = 0;
1783 3751
1784 for (pri = NUMPRI; pri--; ) 3752 for (pri = NUMPRI; pri--; )
3753 count += pendingcnt [pri];
3754
3755 return count;
3756}
3757
3758ecb_noinline
3759void
3760ev_invoke_pending (EV_P)
3761{
3762 pendingpri = NUMPRI;
3763
3764 do
3765 {
3766 --pendingpri;
3767
3768 /* pendingpri possibly gets modified in the inner loop */
1785 while (pendingcnt [pri]) 3769 while (pendingcnt [pendingpri])
1786 { 3770 {
1787 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3771 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
1788 3772
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; 3773 p->w->pending = 0;
1793 EV_CB_INVOKE (p->w, p->events); 3774 EV_CB_INVOKE (p->w, p->events);
1794 EV_FREQUENT_CHECK; 3775 EV_FREQUENT_CHECK;
1795 } 3776 }
3777 }
3778 while (pendingpri);
1796} 3779}
1797 3780
1798#if EV_IDLE_ENABLE 3781#if EV_IDLE_ENABLE
1799/* make idle watchers pending. this handles the "call-idle */ 3782/* make idle watchers pending. this handles the "call-idle */
1800/* only when higher priorities are idle" logic */ 3783/* only when higher priorities are idle" logic */
1801inline_size void 3784inline_size void
1802idle_reify (EV_P) 3785idle_reify (EV_P)
1803{ 3786{
1804 if (expect_false (idleall)) 3787 if (ecb_expect_false (idleall))
1805 { 3788 {
1806 int pri; 3789 int pri;
1807 3790
1808 for (pri = NUMPRI; pri--; ) 3791 for (pri = NUMPRI; pri--; )
1809 { 3792 {
… …
1839 { 3822 {
1840 ev_at (w) += w->repeat; 3823 ev_at (w) += w->repeat;
1841 if (ev_at (w) < mn_now) 3824 if (ev_at (w) < mn_now)
1842 ev_at (w) = mn_now; 3825 ev_at (w) = mn_now;
1843 3826
1844 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 3827 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > EV_TS_CONST (0.)));
1845 3828
1846 ANHE_at_cache (timers [HEAP0]); 3829 ANHE_at_cache (timers [HEAP0]);
1847 downheap (timers, timercnt, HEAP0); 3830 downheap (timers, timercnt, HEAP0);
1848 } 3831 }
1849 else 3832 else
… …
1852 EV_FREQUENT_CHECK; 3835 EV_FREQUENT_CHECK;
1853 feed_reverse (EV_A_ (W)w); 3836 feed_reverse (EV_A_ (W)w);
1854 } 3837 }
1855 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 3838 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1856 3839
1857 feed_reverse_done (EV_A_ EV_TIMEOUT); 3840 feed_reverse_done (EV_A_ EV_TIMER);
1858 } 3841 }
1859} 3842}
1860 3843
1861#if EV_PERIODIC_ENABLE 3844#if EV_PERIODIC_ENABLE
3845
3846ecb_noinline
3847static void
3848periodic_recalc (EV_P_ ev_periodic *w)
3849{
3850 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3851 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3852
3853 /* the above almost always errs on the low side */
3854 while (at <= ev_rt_now)
3855 {
3856 ev_tstamp nat = at + w->interval;
3857
3858 /* when resolution fails us, we use ev_rt_now */
3859 if (ecb_expect_false (nat == at))
3860 {
3861 at = ev_rt_now;
3862 break;
3863 }
3864
3865 at = nat;
3866 }
3867
3868 ev_at (w) = at;
3869}
3870
1862/* make periodics pending */ 3871/* make periodics pending */
1863inline_size void 3872inline_size void
1864periodics_reify (EV_P) 3873periodics_reify (EV_P)
1865{ 3874{
1866 EV_FREQUENT_CHECK; 3875 EV_FREQUENT_CHECK;
1867 3876
1868 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3877 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1869 { 3878 {
1870 int feed_count = 0;
1871
1872 do 3879 do
1873 { 3880 {
1874 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3881 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
1875 3882
1876 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3883 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
1885 ANHE_at_cache (periodics [HEAP0]); 3892 ANHE_at_cache (periodics [HEAP0]);
1886 downheap (periodics, periodiccnt, HEAP0); 3893 downheap (periodics, periodiccnt, HEAP0);
1887 } 3894 }
1888 else if (w->interval) 3895 else if (w->interval)
1889 { 3896 {
1890 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3897 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]); 3898 ANHE_at_cache (periodics [HEAP0]);
1905 downheap (periodics, periodiccnt, HEAP0); 3899 downheap (periodics, periodiccnt, HEAP0);
1906 } 3900 }
1907 else 3901 else
1908 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3902 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
1915 feed_reverse_done (EV_A_ EV_PERIODIC); 3909 feed_reverse_done (EV_A_ EV_PERIODIC);
1916 } 3910 }
1917} 3911}
1918 3912
1919/* simply recalculate all periodics */ 3913/* simply recalculate all periodics */
1920/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 3914/* TODO: maybe ensure that at least one event happens when jumping forward? */
1921static void noinline 3915ecb_noinline ecb_cold
3916static void
1922periodics_reschedule (EV_P) 3917periodics_reschedule (EV_P)
1923{ 3918{
1924 int i; 3919 int i;
1925 3920
1926 /* adjust periodics after time jump */ 3921 /* adjust periodics after time jump */
… …
1929 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3924 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1930 3925
1931 if (w->reschedule_cb) 3926 if (w->reschedule_cb)
1932 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3927 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1933 else if (w->interval) 3928 else if (w->interval)
1934 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3929 periodic_recalc (EV_A_ w);
1935 3930
1936 ANHE_at_cache (periodics [i]); 3931 ANHE_at_cache (periodics [i]);
1937 } 3932 }
1938 3933
1939 reheap (periodics, periodiccnt); 3934 reheap (periodics, periodiccnt);
1940} 3935}
1941#endif 3936#endif
1942 3937
1943/* adjust all timers by a given offset */ 3938/* adjust all timers by a given offset */
1944static void noinline 3939ecb_noinline ecb_cold
3940static void
1945timers_reschedule (EV_P_ ev_tstamp adjust) 3941timers_reschedule (EV_P_ ev_tstamp adjust)
1946{ 3942{
1947 int i; 3943 int i;
1948 3944
1949 for (i = 0; i < timercnt; ++i) 3945 for (i = 0; i < timercnt; ++i)
… …
1953 ANHE_at_cache (*he); 3949 ANHE_at_cache (*he);
1954 } 3950 }
1955} 3951}
1956 3952
1957/* fetch new monotonic and realtime times from the kernel */ 3953/* fetch new monotonic and realtime times from the kernel */
1958/* also detetc if there was a timejump, and act accordingly */ 3954/* also detect if there was a timejump, and act accordingly */
1959inline_speed void 3955inline_speed void
1960time_update (EV_P_ ev_tstamp max_block) 3956time_update (EV_P_ ev_tstamp max_block)
1961{ 3957{
1962#if EV_USE_MONOTONIC 3958#if EV_USE_MONOTONIC
1963 if (expect_true (have_monotonic)) 3959 if (ecb_expect_true (have_monotonic))
1964 { 3960 {
1965 int i; 3961 int i;
1966 ev_tstamp odiff = rtmn_diff; 3962 ev_tstamp odiff = rtmn_diff;
1967 3963
1968 mn_now = get_clock (); 3964 mn_now = get_clock ();
1969 3965
1970 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3966 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
1971 /* interpolate in the meantime */ 3967 /* interpolate in the meantime */
1972 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 3968 if (ecb_expect_true (mn_now - now_floor < EV_TS_CONST (MIN_TIMEJUMP * .5)))
1973 { 3969 {
1974 ev_rt_now = rtmn_diff + mn_now; 3970 ev_rt_now = rtmn_diff + mn_now;
1975 return; 3971 return;
1976 } 3972 }
1977 3973
… …
1986 * doesn't hurt either as we only do this on time-jumps or 3982 * doesn't hurt either as we only do this on time-jumps or
1987 * in the unlikely event of having been preempted here. 3983 * in the unlikely event of having been preempted here.
1988 */ 3984 */
1989 for (i = 4; --i; ) 3985 for (i = 4; --i; )
1990 { 3986 {
3987 ev_tstamp diff;
1991 rtmn_diff = ev_rt_now - mn_now; 3988 rtmn_diff = ev_rt_now - mn_now;
1992 3989
1993 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3990 diff = odiff - rtmn_diff;
3991
3992 if (ecb_expect_true ((diff < EV_TS_CONST (0.) ? -diff : diff) < EV_TS_CONST (MIN_TIMEJUMP)))
1994 return; /* all is well */ 3993 return; /* all is well */
1995 3994
1996 ev_rt_now = ev_time (); 3995 ev_rt_now = ev_time ();
1997 mn_now = get_clock (); 3996 mn_now = get_clock ();
1998 now_floor = mn_now; 3997 now_floor = mn_now;
… …
2007 else 4006 else
2008#endif 4007#endif
2009 { 4008 {
2010 ev_rt_now = ev_time (); 4009 ev_rt_now = ev_time ();
2011 4010
2012 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 4011 if (ecb_expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + EV_TS_CONST (MIN_TIMEJUMP)))
2013 { 4012 {
2014 /* adjust timers. this is easy, as the offset is the same for all of them */ 4013 /* 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); 4014 timers_reschedule (EV_A_ ev_rt_now - mn_now);
2016#if EV_PERIODIC_ENABLE 4015#if EV_PERIODIC_ENABLE
2017 periodics_reschedule (EV_A); 4016 periodics_reschedule (EV_A);
… …
2020 4019
2021 mn_now = ev_rt_now; 4020 mn_now = ev_rt_now;
2022 } 4021 }
2023} 4022}
2024 4023
2025static int loop_done; 4024int
2026
2027void
2028ev_loop (EV_P_ int flags) 4025ev_run (EV_P_ int flags)
2029{ 4026{
4027#if EV_FEATURE_API
4028 ++loop_depth;
4029#endif
4030
4031 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
4032
2030 loop_done = EVUNLOOP_CANCEL; 4033 loop_done = EVBREAK_CANCEL;
2031 4034
2032 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 4035 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2033 4036
2034 do 4037 do
2035 { 4038 {
2036#if EV_VERIFY >= 2 4039#if EV_VERIFY >= 2
2037 ev_loop_verify (EV_A); 4040 ev_verify (EV_A);
2038#endif 4041#endif
2039 4042
2040#ifndef _WIN32 4043#ifndef _WIN32
2041 if (expect_false (curpid)) /* penalise the forking check even more */ 4044 if (ecb_expect_false (curpid)) /* penalise the forking check even more */
2042 if (expect_false (getpid () != curpid)) 4045 if (ecb_expect_false (getpid () != curpid))
2043 { 4046 {
2044 curpid = getpid (); 4047 curpid = getpid ();
2045 postfork = 1; 4048 postfork = 1;
2046 } 4049 }
2047#endif 4050#endif
2048 4051
2049#if EV_FORK_ENABLE 4052#if EV_FORK_ENABLE
2050 /* we might have forked, so queue fork handlers */ 4053 /* we might have forked, so queue fork handlers */
2051 if (expect_false (postfork)) 4054 if (ecb_expect_false (postfork))
2052 if (forkcnt) 4055 if (forkcnt)
2053 { 4056 {
2054 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 4057 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2055 call_pending (EV_A); 4058 EV_INVOKE_PENDING;
2056 } 4059 }
2057#endif 4060#endif
2058 4061
4062#if EV_PREPARE_ENABLE
2059 /* queue prepare watchers (and execute them) */ 4063 /* queue prepare watchers (and execute them) */
2060 if (expect_false (preparecnt)) 4064 if (ecb_expect_false (preparecnt))
2061 { 4065 {
2062 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 4066 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2063 call_pending (EV_A); 4067 EV_INVOKE_PENDING;
2064 } 4068 }
4069#endif
4070
4071 if (ecb_expect_false (loop_done))
4072 break;
2065 4073
2066 /* we might have forked, so reify kernel state if necessary */ 4074 /* we might have forked, so reify kernel state if necessary */
2067 if (expect_false (postfork)) 4075 if (ecb_expect_false (postfork))
2068 loop_fork (EV_A); 4076 loop_fork (EV_A);
2069 4077
2070 /* update fd-related kernel structures */ 4078 /* update fd-related kernel structures */
2071 fd_reify (EV_A); 4079 fd_reify (EV_A);
2072 4080
2073 /* calculate blocking time */ 4081 /* calculate blocking time */
2074 { 4082 {
2075 ev_tstamp waittime = 0.; 4083 ev_tstamp waittime = 0.;
2076 ev_tstamp sleeptime = 0.; 4084 ev_tstamp sleeptime = 0.;
2077 4085
4086 /* remember old timestamp for io_blocktime calculation */
4087 ev_tstamp prev_mn_now = mn_now;
4088
4089 /* update time to cancel out callback processing overhead */
4090 time_update (EV_A_ EV_TS_CONST (EV_TSTAMP_HUGE));
4091
4092 /* from now on, we want a pipe-wake-up */
4093 pipe_write_wanted = 1;
4094
4095 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
4096
2078 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 4097 if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2079 { 4098 {
2080 /* remember old timestamp for io_blocktime calculation */
2081 ev_tstamp prev_mn_now = mn_now;
2082
2083 /* update time to cancel out callback processing overhead */
2084 time_update (EV_A_ 1e100);
2085
2086 waittime = MAX_BLOCKTIME; 4099 waittime = EV_TS_CONST (MAX_BLOCKTIME);
4100
4101#if EV_USE_MONOTONIC
4102 if (ecb_expect_true (have_monotonic))
4103 {
4104#if EV_USE_TIMERFD
4105 /* sleep a lot longer when we can reliably detect timejumps */
4106 if (ecb_expect_true (timerfd != -1))
4107 waittime = EV_TS_CONST (MAX_BLOCKTIME2);
4108#endif
4109#if !EV_PERIODIC_ENABLE
4110 /* without periodics but with monotonic clock there is no need */
4111 /* for any time jump detection, so sleep longer */
4112 waittime = EV_TS_CONST (MAX_BLOCKTIME2);
4113#endif
4114 }
4115#endif
2087 4116
2088 if (timercnt) 4117 if (timercnt)
2089 { 4118 {
2090 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 4119 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2091 if (waittime > to) waittime = to; 4120 if (waittime > to) waittime = to;
2092 } 4121 }
2093 4122
2094#if EV_PERIODIC_ENABLE 4123#if EV_PERIODIC_ENABLE
2095 if (periodiccnt) 4124 if (periodiccnt)
2096 { 4125 {
2097 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 4126 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2098 if (waittime > to) waittime = to; 4127 if (waittime > to) waittime = to;
2099 } 4128 }
2100#endif 4129#endif
2101 4130
2102 /* don't let timeouts decrease the waittime below timeout_blocktime */ 4131 /* don't let timeouts decrease the waittime below timeout_blocktime */
2103 if (expect_false (waittime < timeout_blocktime)) 4132 if (ecb_expect_false (waittime < timeout_blocktime))
2104 waittime = timeout_blocktime; 4133 waittime = timeout_blocktime;
2105 4134
4135 /* now there are two more special cases left, either we have
4136 * already-expired timers, so we should not sleep, or we have timers
4137 * that expire very soon, in which case we need to wait for a minimum
4138 * amount of time for some event loop backends.
4139 */
4140 if (ecb_expect_false (waittime < backend_mintime))
4141 waittime = waittime <= EV_TS_CONST (0.)
4142 ? EV_TS_CONST (0.)
4143 : backend_mintime;
4144
2106 /* extra check because io_blocktime is commonly 0 */ 4145 /* extra check because io_blocktime is commonly 0 */
2107 if (expect_false (io_blocktime)) 4146 if (ecb_expect_false (io_blocktime))
2108 { 4147 {
2109 sleeptime = io_blocktime - (mn_now - prev_mn_now); 4148 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2110 4149
2111 if (sleeptime > waittime - backend_fudge) 4150 if (sleeptime > waittime - backend_mintime)
2112 sleeptime = waittime - backend_fudge; 4151 sleeptime = waittime - backend_mintime;
2113 4152
2114 if (expect_true (sleeptime > 0.)) 4153 if (ecb_expect_true (sleeptime > EV_TS_CONST (0.)))
2115 { 4154 {
2116 ev_sleep (sleeptime); 4155 ev_sleep (sleeptime);
2117 waittime -= sleeptime; 4156 waittime -= sleeptime;
2118 } 4157 }
2119 } 4158 }
2120 } 4159 }
2121 4160
4161#if EV_FEATURE_API
2122 ++loop_count; 4162 ++loop_count;
4163#endif
4164 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2123 backend_poll (EV_A_ waittime); 4165 backend_poll (EV_A_ waittime);
4166 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
4167
4168 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
4169
4170 ECB_MEMORY_FENCE_ACQUIRE;
4171 if (pipe_write_skipped)
4172 {
4173 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
4174 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
4175 }
2124 4176
2125 /* update ev_rt_now, do magic */ 4177 /* update ev_rt_now, do magic */
2126 time_update (EV_A_ waittime + sleeptime); 4178 time_update (EV_A_ waittime + sleeptime);
2127 } 4179 }
2128 4180
… …
2135#if EV_IDLE_ENABLE 4187#if EV_IDLE_ENABLE
2136 /* queue idle watchers unless other events are pending */ 4188 /* queue idle watchers unless other events are pending */
2137 idle_reify (EV_A); 4189 idle_reify (EV_A);
2138#endif 4190#endif
2139 4191
4192#if EV_CHECK_ENABLE
2140 /* queue check watchers, to be executed first */ 4193 /* queue check watchers, to be executed first */
2141 if (expect_false (checkcnt)) 4194 if (ecb_expect_false (checkcnt))
2142 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 4195 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
4196#endif
2143 4197
2144 call_pending (EV_A); 4198 EV_INVOKE_PENDING;
2145 } 4199 }
2146 while (expect_true ( 4200 while (ecb_expect_true (
2147 activecnt 4201 activecnt
2148 && !loop_done 4202 && !loop_done
2149 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 4203 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2150 )); 4204 ));
2151 4205
2152 if (loop_done == EVUNLOOP_ONE) 4206 if (loop_done == EVBREAK_ONE)
2153 loop_done = EVUNLOOP_CANCEL; 4207 loop_done = EVBREAK_CANCEL;
4208
4209#if EV_FEATURE_API
4210 --loop_depth;
4211#endif
4212
4213 return activecnt;
2154} 4214}
2155 4215
2156void 4216void
2157ev_unloop (EV_P_ int how) 4217ev_break (EV_P_ int how) EV_NOEXCEPT
2158{ 4218{
2159 loop_done = how; 4219 loop_done = how;
2160} 4220}
2161 4221
2162void 4222void
2163ev_ref (EV_P) 4223ev_ref (EV_P) EV_NOEXCEPT
2164{ 4224{
2165 ++activecnt; 4225 ++activecnt;
2166} 4226}
2167 4227
2168void 4228void
2169ev_unref (EV_P) 4229ev_unref (EV_P) EV_NOEXCEPT
2170{ 4230{
2171 --activecnt; 4231 --activecnt;
2172} 4232}
2173 4233
2174void 4234void
2175ev_now_update (EV_P) 4235ev_now_update (EV_P) EV_NOEXCEPT
2176{ 4236{
2177 time_update (EV_A_ 1e100); 4237 time_update (EV_A_ EV_TSTAMP_HUGE);
2178} 4238}
2179 4239
2180void 4240void
2181ev_suspend (EV_P) 4241ev_suspend (EV_P) EV_NOEXCEPT
2182{ 4242{
2183 ev_now_update (EV_A); 4243 ev_now_update (EV_A);
2184} 4244}
2185 4245
2186void 4246void
2187ev_resume (EV_P) 4247ev_resume (EV_P) EV_NOEXCEPT
2188{ 4248{
2189 ev_tstamp mn_prev = mn_now; 4249 ev_tstamp mn_prev = mn_now;
2190 4250
2191 ev_now_update (EV_A); 4251 ev_now_update (EV_A);
2192 timers_reschedule (EV_A_ mn_now - mn_prev); 4252 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2209inline_size void 4269inline_size void
2210wlist_del (WL *head, WL elem) 4270wlist_del (WL *head, WL elem)
2211{ 4271{
2212 while (*head) 4272 while (*head)
2213 { 4273 {
2214 if (*head == elem) 4274 if (ecb_expect_true (*head == elem))
2215 { 4275 {
2216 *head = elem->next; 4276 *head = elem->next;
2217 return; 4277 break;
2218 } 4278 }
2219 4279
2220 head = &(*head)->next; 4280 head = &(*head)->next;
2221 } 4281 }
2222} 4282}
… …
2231 w->pending = 0; 4291 w->pending = 0;
2232 } 4292 }
2233} 4293}
2234 4294
2235int 4295int
2236ev_clear_pending (EV_P_ void *w) 4296ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
2237{ 4297{
2238 W w_ = (W)w; 4298 W w_ = (W)w;
2239 int pending = w_->pending; 4299 int pending = w_->pending;
2240 4300
2241 if (expect_true (pending)) 4301 if (ecb_expect_true (pending))
2242 { 4302 {
2243 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 4303 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2244 p->w = (W)&pending_w; 4304 p->w = (W)&pending_w;
2245 w_->pending = 0; 4305 w_->pending = 0;
2246 return p->events; 4306 return p->events;
… …
2250} 4310}
2251 4311
2252inline_size void 4312inline_size void
2253pri_adjust (EV_P_ W w) 4313pri_adjust (EV_P_ W w)
2254{ 4314{
2255 int pri = w->priority; 4315 int pri = ev_priority (w);
2256 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 4316 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2257 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 4317 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2258 w->priority = pri; 4318 ev_set_priority (w, pri);
2259} 4319}
2260 4320
2261inline_speed void 4321inline_speed void
2262ev_start (EV_P_ W w, int active) 4322ev_start (EV_P_ W w, int active)
2263{ 4323{
… …
2273 w->active = 0; 4333 w->active = 0;
2274} 4334}
2275 4335
2276/*****************************************************************************/ 4336/*****************************************************************************/
2277 4337
2278void noinline 4338ecb_noinline
4339void
2279ev_io_start (EV_P_ ev_io *w) 4340ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
2280{ 4341{
2281 int fd = w->fd; 4342 int fd = w->fd;
2282 4343
2283 if (expect_false (ev_is_active (w))) 4344 if (ecb_expect_false (ev_is_active (w)))
2284 return; 4345 return;
2285 4346
2286 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 4347 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2287 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 4348 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2288 4349
4350#if EV_VERIFY >= 2
4351 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
4352#endif
2289 EV_FREQUENT_CHECK; 4353 EV_FREQUENT_CHECK;
2290 4354
2291 ev_start (EV_A_ (W)w, 1); 4355 ev_start (EV_A_ (W)w, 1);
2292 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 4356 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
2293 wlist_add (&anfds[fd].head, (WL)w); 4357 wlist_add (&anfds[fd].head, (WL)w);
2294 4358
4359 /* common bug, apparently */
4360 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
4361
2295 fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1); 4362 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2296 w->events &= ~EV__IOFDSET; 4363 w->events &= ~EV__IOFDSET;
2297 4364
2298 EV_FREQUENT_CHECK; 4365 EV_FREQUENT_CHECK;
2299} 4366}
2300 4367
2301void noinline 4368ecb_noinline
4369void
2302ev_io_stop (EV_P_ ev_io *w) 4370ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
2303{ 4371{
2304 clear_pending (EV_A_ (W)w); 4372 clear_pending (EV_A_ (W)w);
2305 if (expect_false (!ev_is_active (w))) 4373 if (ecb_expect_false (!ev_is_active (w)))
2306 return; 4374 return;
2307 4375
2308 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 4376 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2309 4377
4378#if EV_VERIFY >= 2
4379 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
4380#endif
2310 EV_FREQUENT_CHECK; 4381 EV_FREQUENT_CHECK;
2311 4382
2312 wlist_del (&anfds[w->fd].head, (WL)w); 4383 wlist_del (&anfds[w->fd].head, (WL)w);
2313 ev_stop (EV_A_ (W)w); 4384 ev_stop (EV_A_ (W)w);
2314 4385
2315 fd_change (EV_A_ w->fd, 1); 4386 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2316 4387
2317 EV_FREQUENT_CHECK; 4388 EV_FREQUENT_CHECK;
2318} 4389}
2319 4390
2320void noinline 4391ecb_noinline
4392void
2321ev_timer_start (EV_P_ ev_timer *w) 4393ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
2322{ 4394{
2323 if (expect_false (ev_is_active (w))) 4395 if (ecb_expect_false (ev_is_active (w)))
2324 return; 4396 return;
2325 4397
2326 ev_at (w) += mn_now; 4398 ev_at (w) += mn_now;
2327 4399
2328 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 4400 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2329 4401
2330 EV_FREQUENT_CHECK; 4402 EV_FREQUENT_CHECK;
2331 4403
2332 ++timercnt; 4404 ++timercnt;
2333 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 4405 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
2334 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 4406 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
2335 ANHE_w (timers [ev_active (w)]) = (WT)w; 4407 ANHE_w (timers [ev_active (w)]) = (WT)w;
2336 ANHE_at_cache (timers [ev_active (w)]); 4408 ANHE_at_cache (timers [ev_active (w)]);
2337 upheap (timers, ev_active (w)); 4409 upheap (timers, ev_active (w));
2338 4410
2339 EV_FREQUENT_CHECK; 4411 EV_FREQUENT_CHECK;
2340 4412
2341 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 4413 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2342} 4414}
2343 4415
2344void noinline 4416ecb_noinline
4417void
2345ev_timer_stop (EV_P_ ev_timer *w) 4418ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
2346{ 4419{
2347 clear_pending (EV_A_ (W)w); 4420 clear_pending (EV_A_ (W)w);
2348 if (expect_false (!ev_is_active (w))) 4421 if (ecb_expect_false (!ev_is_active (w)))
2349 return; 4422 return;
2350 4423
2351 EV_FREQUENT_CHECK; 4424 EV_FREQUENT_CHECK;
2352 4425
2353 { 4426 {
… …
2355 4428
2356 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 4429 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2357 4430
2358 --timercnt; 4431 --timercnt;
2359 4432
2360 if (expect_true (active < timercnt + HEAP0)) 4433 if (ecb_expect_true (active < timercnt + HEAP0))
2361 { 4434 {
2362 timers [active] = timers [timercnt + HEAP0]; 4435 timers [active] = timers [timercnt + HEAP0];
2363 adjustheap (timers, timercnt, active); 4436 adjustheap (timers, timercnt, active);
2364 } 4437 }
2365 } 4438 }
2366 4439
4440 ev_at (w) -= mn_now;
4441
4442 ev_stop (EV_A_ (W)w);
4443
2367 EV_FREQUENT_CHECK; 4444 EV_FREQUENT_CHECK;
2368
2369 ev_at (w) -= mn_now;
2370
2371 ev_stop (EV_A_ (W)w);
2372} 4445}
2373 4446
2374void noinline 4447ecb_noinline
4448void
2375ev_timer_again (EV_P_ ev_timer *w) 4449ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
2376{ 4450{
2377 EV_FREQUENT_CHECK; 4451 EV_FREQUENT_CHECK;
4452
4453 clear_pending (EV_A_ (W)w);
2378 4454
2379 if (ev_is_active (w)) 4455 if (ev_is_active (w))
2380 { 4456 {
2381 if (w->repeat) 4457 if (w->repeat)
2382 { 4458 {
… …
2394 } 4470 }
2395 4471
2396 EV_FREQUENT_CHECK; 4472 EV_FREQUENT_CHECK;
2397} 4473}
2398 4474
4475ev_tstamp
4476ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
4477{
4478 return ev_at (w) - (ev_is_active (w) ? mn_now : EV_TS_CONST (0.));
4479}
4480
2399#if EV_PERIODIC_ENABLE 4481#if EV_PERIODIC_ENABLE
2400void noinline 4482ecb_noinline
4483void
2401ev_periodic_start (EV_P_ ev_periodic *w) 4484ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
2402{ 4485{
2403 if (expect_false (ev_is_active (w))) 4486 if (ecb_expect_false (ev_is_active (w)))
2404 return; 4487 return;
4488
4489#if EV_USE_TIMERFD
4490 if (timerfd == -2)
4491 evtimerfd_init (EV_A);
4492#endif
2405 4493
2406 if (w->reschedule_cb) 4494 if (w->reschedule_cb)
2407 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4495 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2408 else if (w->interval) 4496 else if (w->interval)
2409 { 4497 {
2410 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 4498 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2411 /* this formula differs from the one in periodic_reify because we do not always round up */ 4499 periodic_recalc (EV_A_ w);
2412 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2413 } 4500 }
2414 else 4501 else
2415 ev_at (w) = w->offset; 4502 ev_at (w) = w->offset;
2416 4503
2417 EV_FREQUENT_CHECK; 4504 EV_FREQUENT_CHECK;
2418 4505
2419 ++periodiccnt; 4506 ++periodiccnt;
2420 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4507 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2421 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4508 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
2422 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4509 ANHE_w (periodics [ev_active (w)]) = (WT)w;
2423 ANHE_at_cache (periodics [ev_active (w)]); 4510 ANHE_at_cache (periodics [ev_active (w)]);
2424 upheap (periodics, ev_active (w)); 4511 upheap (periodics, ev_active (w));
2425 4512
2426 EV_FREQUENT_CHECK; 4513 EV_FREQUENT_CHECK;
2427 4514
2428 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4515 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2429} 4516}
2430 4517
2431void noinline 4518ecb_noinline
4519void
2432ev_periodic_stop (EV_P_ ev_periodic *w) 4520ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
2433{ 4521{
2434 clear_pending (EV_A_ (W)w); 4522 clear_pending (EV_A_ (W)w);
2435 if (expect_false (!ev_is_active (w))) 4523 if (ecb_expect_false (!ev_is_active (w)))
2436 return; 4524 return;
2437 4525
2438 EV_FREQUENT_CHECK; 4526 EV_FREQUENT_CHECK;
2439 4527
2440 { 4528 {
… …
2442 4530
2443 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 4531 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2444 4532
2445 --periodiccnt; 4533 --periodiccnt;
2446 4534
2447 if (expect_true (active < periodiccnt + HEAP0)) 4535 if (ecb_expect_true (active < periodiccnt + HEAP0))
2448 { 4536 {
2449 periodics [active] = periodics [periodiccnt + HEAP0]; 4537 periodics [active] = periodics [periodiccnt + HEAP0];
2450 adjustheap (periodics, periodiccnt, active); 4538 adjustheap (periodics, periodiccnt, active);
2451 } 4539 }
2452 } 4540 }
2453 4541
4542 ev_stop (EV_A_ (W)w);
4543
2454 EV_FREQUENT_CHECK; 4544 EV_FREQUENT_CHECK;
2455
2456 ev_stop (EV_A_ (W)w);
2457} 4545}
2458 4546
2459void noinline 4547ecb_noinline
4548void
2460ev_periodic_again (EV_P_ ev_periodic *w) 4549ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
2461{ 4550{
2462 /* TODO: use adjustheap and recalculation */ 4551 /* TODO: use adjustheap and recalculation */
2463 ev_periodic_stop (EV_A_ w); 4552 ev_periodic_stop (EV_A_ w);
2464 ev_periodic_start (EV_A_ w); 4553 ev_periodic_start (EV_A_ w);
2465} 4554}
… …
2467 4556
2468#ifndef SA_RESTART 4557#ifndef SA_RESTART
2469# define SA_RESTART 0 4558# define SA_RESTART 0
2470#endif 4559#endif
2471 4560
2472void noinline 4561#if EV_SIGNAL_ENABLE
4562
4563ecb_noinline
4564void
2473ev_signal_start (EV_P_ ev_signal *w) 4565ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
2474{ 4566{
4567 if (ecb_expect_false (ev_is_active (w)))
4568 return;
4569
4570 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
4571
2475#if EV_MULTIPLICITY 4572#if EV_MULTIPLICITY
2476 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4573 assert (("libev: a signal must not be attached to two different loops",
2477#endif 4574 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2478 if (expect_false (ev_is_active (w)))
2479 return;
2480 4575
2481 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0)); 4576 signals [w->signum - 1].loop = EV_A;
2482 4577 ECB_MEMORY_FENCE_RELEASE;
2483 evpipe_init (EV_A); 4578#endif
2484 4579
2485 EV_FREQUENT_CHECK; 4580 EV_FREQUENT_CHECK;
2486 4581
4582#if EV_USE_SIGNALFD
4583 if (sigfd == -2)
2487 { 4584 {
2488#ifndef _WIN32 4585 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2489 sigset_t full, prev; 4586 if (sigfd < 0 && errno == EINVAL)
2490 sigfillset (&full); 4587 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2491 sigprocmask (SIG_SETMASK, &full, &prev);
2492#endif
2493 4588
2494 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); 4589 if (sigfd >= 0)
4590 {
4591 fd_intern (sigfd); /* doing it twice will not hurt */
2495 4592
2496#ifndef _WIN32 4593 sigemptyset (&sigfd_set);
2497 sigprocmask (SIG_SETMASK, &prev, 0); 4594
2498#endif 4595 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
4596 ev_set_priority (&sigfd_w, EV_MAXPRI);
4597 ev_io_start (EV_A_ &sigfd_w);
4598 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
4599 }
2499 } 4600 }
4601
4602 if (sigfd >= 0)
4603 {
4604 /* TODO: check .head */
4605 sigaddset (&sigfd_set, w->signum);
4606 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
4607
4608 signalfd (sigfd, &sigfd_set, 0);
4609 }
4610#endif
2500 4611
2501 ev_start (EV_A_ (W)w, 1); 4612 ev_start (EV_A_ (W)w, 1);
2502 wlist_add (&signals [w->signum - 1].head, (WL)w); 4613 wlist_add (&signals [w->signum - 1].head, (WL)w);
2503 4614
2504 if (!((WL)w)->next) 4615 if (!((WL)w)->next)
4616# if EV_USE_SIGNALFD
4617 if (sigfd < 0) /*TODO*/
4618# endif
2505 { 4619 {
2506#if _WIN32 4620# ifdef _WIN32
4621 evpipe_init (EV_A);
4622
2507 signal (w->signum, ev_sighandler); 4623 signal (w->signum, ev_sighandler);
2508#else 4624# else
2509 struct sigaction sa; 4625 struct sigaction sa;
4626
4627 evpipe_init (EV_A);
4628
2510 sa.sa_handler = ev_sighandler; 4629 sa.sa_handler = ev_sighandler;
2511 sigfillset (&sa.sa_mask); 4630 sigfillset (&sa.sa_mask);
2512 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 4631 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2513 sigaction (w->signum, &sa, 0); 4632 sigaction (w->signum, &sa, 0);
4633
4634 if (origflags & EVFLAG_NOSIGMASK)
4635 {
4636 sigemptyset (&sa.sa_mask);
4637 sigaddset (&sa.sa_mask, w->signum);
4638 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
4639 }
2514#endif 4640#endif
2515 } 4641 }
2516 4642
2517 EV_FREQUENT_CHECK; 4643 EV_FREQUENT_CHECK;
2518} 4644}
2519 4645
2520void noinline 4646ecb_noinline
4647void
2521ev_signal_stop (EV_P_ ev_signal *w) 4648ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
2522{ 4649{
2523 clear_pending (EV_A_ (W)w); 4650 clear_pending (EV_A_ (W)w);
2524 if (expect_false (!ev_is_active (w))) 4651 if (ecb_expect_false (!ev_is_active (w)))
2525 return; 4652 return;
2526 4653
2527 EV_FREQUENT_CHECK; 4654 EV_FREQUENT_CHECK;
2528 4655
2529 wlist_del (&signals [w->signum - 1].head, (WL)w); 4656 wlist_del (&signals [w->signum - 1].head, (WL)w);
2530 ev_stop (EV_A_ (W)w); 4657 ev_stop (EV_A_ (W)w);
2531 4658
2532 if (!signals [w->signum - 1].head) 4659 if (!signals [w->signum - 1].head)
4660 {
4661#if EV_MULTIPLICITY
4662 signals [w->signum - 1].loop = 0; /* unattach from signal */
4663#endif
4664#if EV_USE_SIGNALFD
4665 if (sigfd >= 0)
4666 {
4667 sigset_t ss;
4668
4669 sigemptyset (&ss);
4670 sigaddset (&ss, w->signum);
4671 sigdelset (&sigfd_set, w->signum);
4672
4673 signalfd (sigfd, &sigfd_set, 0);
4674 sigprocmask (SIG_UNBLOCK, &ss, 0);
4675 }
4676 else
4677#endif
2533 signal (w->signum, SIG_DFL); 4678 signal (w->signum, SIG_DFL);
4679 }
2534 4680
2535 EV_FREQUENT_CHECK; 4681 EV_FREQUENT_CHECK;
2536} 4682}
2537 4683
4684#endif
4685
4686#if EV_CHILD_ENABLE
4687
2538void 4688void
2539ev_child_start (EV_P_ ev_child *w) 4689ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
2540{ 4690{
2541#if EV_MULTIPLICITY 4691#if EV_MULTIPLICITY
2542 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4692 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2543#endif 4693#endif
2544 if (expect_false (ev_is_active (w))) 4694 if (ecb_expect_false (ev_is_active (w)))
2545 return; 4695 return;
2546 4696
2547 EV_FREQUENT_CHECK; 4697 EV_FREQUENT_CHECK;
2548 4698
2549 ev_start (EV_A_ (W)w, 1); 4699 ev_start (EV_A_ (W)w, 1);
2550 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4700 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2551 4701
2552 EV_FREQUENT_CHECK; 4702 EV_FREQUENT_CHECK;
2553} 4703}
2554 4704
2555void 4705void
2556ev_child_stop (EV_P_ ev_child *w) 4706ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
2557{ 4707{
2558 clear_pending (EV_A_ (W)w); 4708 clear_pending (EV_A_ (W)w);
2559 if (expect_false (!ev_is_active (w))) 4709 if (ecb_expect_false (!ev_is_active (w)))
2560 return; 4710 return;
2561 4711
2562 EV_FREQUENT_CHECK; 4712 EV_FREQUENT_CHECK;
2563 4713
2564 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4714 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2565 ev_stop (EV_A_ (W)w); 4715 ev_stop (EV_A_ (W)w);
2566 4716
2567 EV_FREQUENT_CHECK; 4717 EV_FREQUENT_CHECK;
2568} 4718}
4719
4720#endif
2569 4721
2570#if EV_STAT_ENABLE 4722#if EV_STAT_ENABLE
2571 4723
2572# ifdef _WIN32 4724# ifdef _WIN32
2573# undef lstat 4725# undef lstat
… …
2576 4728
2577#define DEF_STAT_INTERVAL 5.0074891 4729#define DEF_STAT_INTERVAL 5.0074891
2578#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4730#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2579#define MIN_STAT_INTERVAL 0.1074891 4731#define MIN_STAT_INTERVAL 0.1074891
2580 4732
2581static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4733ecb_noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2582 4734
2583#if EV_USE_INOTIFY 4735#if EV_USE_INOTIFY
2584# define EV_INOTIFY_BUFSIZE 8192
2585 4736
2586static void noinline 4737/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
4738# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
4739
4740ecb_noinline
4741static void
2587infy_add (EV_P_ ev_stat *w) 4742infy_add (EV_P_ ev_stat *w)
2588{ 4743{
2589 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); 4744 w->wd = inotify_add_watch (fs_fd, w->path,
4745 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4746 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4747 | IN_DONT_FOLLOW | IN_MASK_ADD);
2590 4748
2591 if (w->wd < 0) 4749 if (w->wd >= 0)
4750 {
4751 struct statfs sfs;
4752
4753 /* now local changes will be tracked by inotify, but remote changes won't */
4754 /* unless the filesystem is known to be local, we therefore still poll */
4755 /* also do poll on <2.6.25, but with normal frequency */
4756
4757 if (!fs_2625)
4758 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
4759 else if (!statfs (w->path, &sfs)
4760 && (sfs.f_type == 0x1373 /* devfs */
4761 || sfs.f_type == 0x4006 /* fat */
4762 || sfs.f_type == 0x4d44 /* msdos */
4763 || sfs.f_type == 0xEF53 /* ext2/3 */
4764 || sfs.f_type == 0x72b6 /* jffs2 */
4765 || sfs.f_type == 0x858458f6 /* ramfs */
4766 || sfs.f_type == 0x5346544e /* ntfs */
4767 || sfs.f_type == 0x3153464a /* jfs */
4768 || sfs.f_type == 0x9123683e /* btrfs */
4769 || sfs.f_type == 0x52654973 /* reiser3 */
4770 || sfs.f_type == 0x01021994 /* tmpfs */
4771 || sfs.f_type == 0x58465342 /* xfs */))
4772 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
4773 else
4774 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2592 { 4775 }
4776 else
4777 {
4778 /* can't use inotify, continue to stat */
2593 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4779 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2594 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2595 4780
2596 /* monitor some parent directory for speedup hints */ 4781 /* if path is not there, monitor some parent directory for speedup hints */
2597 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 4782 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2598 /* but an efficiency issue only */ 4783 /* but an efficiency issue only */
2599 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 4784 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2600 { 4785 {
2601 char path [4096]; 4786 char path [4096];
… …
2611 if (!pend || pend == path) 4796 if (!pend || pend == path)
2612 break; 4797 break;
2613 4798
2614 *pend = 0; 4799 *pend = 0;
2615 w->wd = inotify_add_watch (fs_fd, path, mask); 4800 w->wd = inotify_add_watch (fs_fd, path, mask);
2616 } 4801 }
2617 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 4802 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2618 } 4803 }
2619 } 4804 }
2620 4805
2621 if (w->wd >= 0) 4806 if (w->wd >= 0)
2622 {
2623 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4807 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2624 4808
2625 /* now local changes will be tracked by inotify, but remote changes won't */ 4809 /* now re-arm timer, if required */
2626 /* unless the filesystem it known to be local, we therefore still poll */ 4810 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2627 /* also do poll on <2.6.25, but with normal frequency */
2628 struct statfs sfs;
2629
2630 if (fs_2625 && !statfs (w->path, &sfs))
2631 if (sfs.f_type == 0x1373 /* devfs */
2632 || sfs.f_type == 0xEF53 /* ext2/3 */
2633 || sfs.f_type == 0x3153464a /* jfs */
2634 || sfs.f_type == 0x52654973 /* reiser3 */
2635 || sfs.f_type == 0x01021994 /* tempfs */
2636 || sfs.f_type == 0x58465342 /* xfs */)
2637 return;
2638
2639 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2640 ev_timer_again (EV_A_ &w->timer); 4811 ev_timer_again (EV_A_ &w->timer);
2641 } 4812 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2642} 4813}
2643 4814
2644static void noinline 4815ecb_noinline
4816static void
2645infy_del (EV_P_ ev_stat *w) 4817infy_del (EV_P_ ev_stat *w)
2646{ 4818{
2647 int slot; 4819 int slot;
2648 int wd = w->wd; 4820 int wd = w->wd;
2649 4821
2650 if (wd < 0) 4822 if (wd < 0)
2651 return; 4823 return;
2652 4824
2653 w->wd = -2; 4825 w->wd = -2;
2654 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 4826 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2655 wlist_del (&fs_hash [slot].head, (WL)w); 4827 wlist_del (&fs_hash [slot].head, (WL)w);
2656 4828
2657 /* remove this watcher, if others are watching it, they will rearm */ 4829 /* remove this watcher, if others are watching it, they will rearm */
2658 inotify_rm_watch (fs_fd, wd); 4830 inotify_rm_watch (fs_fd, wd);
2659} 4831}
2660 4832
2661static void noinline 4833ecb_noinline
4834static void
2662infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4835infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2663{ 4836{
2664 if (slot < 0) 4837 if (slot < 0)
2665 /* overflow, need to check for all hash slots */ 4838 /* overflow, need to check for all hash slots */
2666 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4839 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2667 infy_wd (EV_A_ slot, wd, ev); 4840 infy_wd (EV_A_ slot, wd, ev);
2668 else 4841 else
2669 { 4842 {
2670 WL w_; 4843 WL w_;
2671 4844
2672 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 4845 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2673 { 4846 {
2674 ev_stat *w = (ev_stat *)w_; 4847 ev_stat *w = (ev_stat *)w_;
2675 w_ = w_->next; /* lets us remove this watcher and all before it */ 4848 w_ = w_->next; /* lets us remove this watcher and all before it */
2676 4849
2677 if (w->wd == wd || wd == -1) 4850 if (w->wd == wd || wd == -1)
2678 { 4851 {
2679 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 4852 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2680 { 4853 {
2681 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4854 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2682 w->wd = -1; 4855 w->wd = -1;
2683 infy_add (EV_A_ w); /* re-add, no matter what */ 4856 infy_add (EV_A_ w); /* re-add, no matter what */
2684 } 4857 }
2685 4858
2686 stat_timer_cb (EV_A_ &w->timer, 0); 4859 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2691 4864
2692static void 4865static void
2693infy_cb (EV_P_ ev_io *w, int revents) 4866infy_cb (EV_P_ ev_io *w, int revents)
2694{ 4867{
2695 char buf [EV_INOTIFY_BUFSIZE]; 4868 char buf [EV_INOTIFY_BUFSIZE];
2696 struct inotify_event *ev = (struct inotify_event *)buf;
2697 int ofs; 4869 int ofs;
2698 int len = read (fs_fd, buf, sizeof (buf)); 4870 int len = read (fs_fd, buf, sizeof (buf));
2699 4871
2700 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 4872 for (ofs = 0; ofs < len; )
4873 {
4874 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2701 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4875 infy_wd (EV_A_ ev->wd, ev->wd, ev);
4876 ofs += sizeof (struct inotify_event) + ev->len;
4877 }
2702} 4878}
2703 4879
2704inline_size void 4880inline_size ecb_cold
4881void
2705check_2625 (EV_P) 4882ev_check_2625 (EV_P)
2706{ 4883{
2707 /* kernels < 2.6.25 are borked 4884 /* kernels < 2.6.25 are borked
2708 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4885 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2709 */ 4886 */
2710 struct utsname buf; 4887 if (ev_linux_version () < 0x020619)
2711 int major, minor, micro;
2712
2713 if (uname (&buf))
2714 return; 4888 return;
2715 4889
2716 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2717 return;
2718
2719 if (major < 2
2720 || (major == 2 && minor < 6)
2721 || (major == 2 && minor == 6 && micro < 25))
2722 return;
2723
2724 fs_2625 = 1; 4890 fs_2625 = 1;
4891}
4892
4893inline_size int
4894infy_newfd (void)
4895{
4896#if defined IN_CLOEXEC && defined IN_NONBLOCK
4897 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
4898 if (fd >= 0)
4899 return fd;
4900#endif
4901 return inotify_init ();
2725} 4902}
2726 4903
2727inline_size void 4904inline_size void
2728infy_init (EV_P) 4905infy_init (EV_P)
2729{ 4906{
2730 if (fs_fd != -2) 4907 if (fs_fd != -2)
2731 return; 4908 return;
2732 4909
2733 fs_fd = -1; 4910 fs_fd = -1;
2734 4911
2735 check_2625 (EV_A); 4912 ev_check_2625 (EV_A);
2736 4913
2737 fs_fd = inotify_init (); 4914 fs_fd = infy_newfd ();
2738 4915
2739 if (fs_fd >= 0) 4916 if (fs_fd >= 0)
2740 { 4917 {
4918 fd_intern (fs_fd);
2741 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 4919 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2742 ev_set_priority (&fs_w, EV_MAXPRI); 4920 ev_set_priority (&fs_w, EV_MAXPRI);
2743 ev_io_start (EV_A_ &fs_w); 4921 ev_io_start (EV_A_ &fs_w);
4922 ev_unref (EV_A);
2744 } 4923 }
2745} 4924}
2746 4925
2747inline_size void 4926inline_size void
2748infy_fork (EV_P) 4927infy_fork (EV_P)
… …
2750 int slot; 4929 int slot;
2751 4930
2752 if (fs_fd < 0) 4931 if (fs_fd < 0)
2753 return; 4932 return;
2754 4933
4934 ev_ref (EV_A);
4935 ev_io_stop (EV_A_ &fs_w);
2755 close (fs_fd); 4936 close (fs_fd);
2756 fs_fd = inotify_init (); 4937 fs_fd = infy_newfd ();
2757 4938
4939 if (fs_fd >= 0)
4940 {
4941 fd_intern (fs_fd);
4942 ev_io_set (&fs_w, fs_fd, EV_READ);
4943 ev_io_start (EV_A_ &fs_w);
4944 ev_unref (EV_A);
4945 }
4946
2758 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4947 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2759 { 4948 {
2760 WL w_ = fs_hash [slot].head; 4949 WL w_ = fs_hash [slot].head;
2761 fs_hash [slot].head = 0; 4950 fs_hash [slot].head = 0;
2762 4951
2763 while (w_) 4952 while (w_)
… …
2768 w->wd = -1; 4957 w->wd = -1;
2769 4958
2770 if (fs_fd >= 0) 4959 if (fs_fd >= 0)
2771 infy_add (EV_A_ w); /* re-add, no matter what */ 4960 infy_add (EV_A_ w); /* re-add, no matter what */
2772 else 4961 else
4962 {
4963 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
4964 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2773 ev_timer_again (EV_A_ &w->timer); 4965 ev_timer_again (EV_A_ &w->timer);
4966 if (ev_is_active (&w->timer)) ev_unref (EV_A);
4967 }
2774 } 4968 }
2775 } 4969 }
2776} 4970}
2777 4971
2778#endif 4972#endif
… …
2782#else 4976#else
2783# define EV_LSTAT(p,b) lstat (p, b) 4977# define EV_LSTAT(p,b) lstat (p, b)
2784#endif 4978#endif
2785 4979
2786void 4980void
2787ev_stat_stat (EV_P_ ev_stat *w) 4981ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
2788{ 4982{
2789 if (lstat (w->path, &w->attr) < 0) 4983 if (lstat (w->path, &w->attr) < 0)
2790 w->attr.st_nlink = 0; 4984 w->attr.st_nlink = 0;
2791 else if (!w->attr.st_nlink) 4985 else if (!w->attr.st_nlink)
2792 w->attr.st_nlink = 1; 4986 w->attr.st_nlink = 1;
2793} 4987}
2794 4988
2795static void noinline 4989ecb_noinline
4990static void
2796stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4991stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2797{ 4992{
2798 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4993 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2799 4994
2800 /* we copy this here each the time so that */ 4995 ev_statdata prev = w->attr;
2801 /* prev has the old value when the callback gets invoked */
2802 w->prev = w->attr;
2803 ev_stat_stat (EV_A_ w); 4996 ev_stat_stat (EV_A_ w);
2804 4997
2805 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 4998 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2806 if ( 4999 if (
2807 w->prev.st_dev != w->attr.st_dev 5000 prev.st_dev != w->attr.st_dev
2808 || w->prev.st_ino != w->attr.st_ino 5001 || prev.st_ino != w->attr.st_ino
2809 || w->prev.st_mode != w->attr.st_mode 5002 || prev.st_mode != w->attr.st_mode
2810 || w->prev.st_nlink != w->attr.st_nlink 5003 || prev.st_nlink != w->attr.st_nlink
2811 || w->prev.st_uid != w->attr.st_uid 5004 || prev.st_uid != w->attr.st_uid
2812 || w->prev.st_gid != w->attr.st_gid 5005 || prev.st_gid != w->attr.st_gid
2813 || w->prev.st_rdev != w->attr.st_rdev 5006 || prev.st_rdev != w->attr.st_rdev
2814 || w->prev.st_size != w->attr.st_size 5007 || prev.st_size != w->attr.st_size
2815 || w->prev.st_atime != w->attr.st_atime 5008 || prev.st_atime != w->attr.st_atime
2816 || w->prev.st_mtime != w->attr.st_mtime 5009 || prev.st_mtime != w->attr.st_mtime
2817 || w->prev.st_ctime != w->attr.st_ctime 5010 || prev.st_ctime != w->attr.st_ctime
2818 ) { 5011 ) {
5012 /* we only update w->prev on actual differences */
5013 /* in case we test more often than invoke the callback, */
5014 /* to ensure that prev is always different to attr */
5015 w->prev = prev;
5016
2819 #if EV_USE_INOTIFY 5017 #if EV_USE_INOTIFY
2820 if (fs_fd >= 0) 5018 if (fs_fd >= 0)
2821 { 5019 {
2822 infy_del (EV_A_ w); 5020 infy_del (EV_A_ w);
2823 infy_add (EV_A_ w); 5021 infy_add (EV_A_ w);
… …
2828 ev_feed_event (EV_A_ w, EV_STAT); 5026 ev_feed_event (EV_A_ w, EV_STAT);
2829 } 5027 }
2830} 5028}
2831 5029
2832void 5030void
2833ev_stat_start (EV_P_ ev_stat *w) 5031ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
2834{ 5032{
2835 if (expect_false (ev_is_active (w))) 5033 if (ecb_expect_false (ev_is_active (w)))
2836 return; 5034 return;
2837 5035
2838 ev_stat_stat (EV_A_ w); 5036 ev_stat_stat (EV_A_ w);
2839 5037
2840 if (w->interval < MIN_STAT_INTERVAL && w->interval) 5038 if (w->interval < MIN_STAT_INTERVAL && w->interval)
… …
2848 5046
2849 if (fs_fd >= 0) 5047 if (fs_fd >= 0)
2850 infy_add (EV_A_ w); 5048 infy_add (EV_A_ w);
2851 else 5049 else
2852#endif 5050#endif
5051 {
2853 ev_timer_again (EV_A_ &w->timer); 5052 ev_timer_again (EV_A_ &w->timer);
5053 ev_unref (EV_A);
5054 }
2854 5055
2855 ev_start (EV_A_ (W)w, 1); 5056 ev_start (EV_A_ (W)w, 1);
2856 5057
2857 EV_FREQUENT_CHECK; 5058 EV_FREQUENT_CHECK;
2858} 5059}
2859 5060
2860void 5061void
2861ev_stat_stop (EV_P_ ev_stat *w) 5062ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
2862{ 5063{
2863 clear_pending (EV_A_ (W)w); 5064 clear_pending (EV_A_ (W)w);
2864 if (expect_false (!ev_is_active (w))) 5065 if (ecb_expect_false (!ev_is_active (w)))
2865 return; 5066 return;
2866 5067
2867 EV_FREQUENT_CHECK; 5068 EV_FREQUENT_CHECK;
2868 5069
2869#if EV_USE_INOTIFY 5070#if EV_USE_INOTIFY
2870 infy_del (EV_A_ w); 5071 infy_del (EV_A_ w);
2871#endif 5072#endif
5073
5074 if (ev_is_active (&w->timer))
5075 {
5076 ev_ref (EV_A);
2872 ev_timer_stop (EV_A_ &w->timer); 5077 ev_timer_stop (EV_A_ &w->timer);
5078 }
2873 5079
2874 ev_stop (EV_A_ (W)w); 5080 ev_stop (EV_A_ (W)w);
2875 5081
2876 EV_FREQUENT_CHECK; 5082 EV_FREQUENT_CHECK;
2877} 5083}
2878#endif 5084#endif
2879 5085
2880#if EV_IDLE_ENABLE 5086#if EV_IDLE_ENABLE
2881void 5087void
2882ev_idle_start (EV_P_ ev_idle *w) 5088ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
2883{ 5089{
2884 if (expect_false (ev_is_active (w))) 5090 if (ecb_expect_false (ev_is_active (w)))
2885 return; 5091 return;
2886 5092
2887 pri_adjust (EV_A_ (W)w); 5093 pri_adjust (EV_A_ (W)w);
2888 5094
2889 EV_FREQUENT_CHECK; 5095 EV_FREQUENT_CHECK;
… …
2892 int active = ++idlecnt [ABSPRI (w)]; 5098 int active = ++idlecnt [ABSPRI (w)];
2893 5099
2894 ++idleall; 5100 ++idleall;
2895 ev_start (EV_A_ (W)w, active); 5101 ev_start (EV_A_ (W)w, active);
2896 5102
2897 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 5103 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
2898 idles [ABSPRI (w)][active - 1] = w; 5104 idles [ABSPRI (w)][active - 1] = w;
2899 } 5105 }
2900 5106
2901 EV_FREQUENT_CHECK; 5107 EV_FREQUENT_CHECK;
2902} 5108}
2903 5109
2904void 5110void
2905ev_idle_stop (EV_P_ ev_idle *w) 5111ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
2906{ 5112{
2907 clear_pending (EV_A_ (W)w); 5113 clear_pending (EV_A_ (W)w);
2908 if (expect_false (!ev_is_active (w))) 5114 if (ecb_expect_false (!ev_is_active (w)))
2909 return; 5115 return;
2910 5116
2911 EV_FREQUENT_CHECK; 5117 EV_FREQUENT_CHECK;
2912 5118
2913 { 5119 {
… …
2922 5128
2923 EV_FREQUENT_CHECK; 5129 EV_FREQUENT_CHECK;
2924} 5130}
2925#endif 5131#endif
2926 5132
5133#if EV_PREPARE_ENABLE
2927void 5134void
2928ev_prepare_start (EV_P_ ev_prepare *w) 5135ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
2929{ 5136{
2930 if (expect_false (ev_is_active (w))) 5137 if (ecb_expect_false (ev_is_active (w)))
2931 return; 5138 return;
2932 5139
2933 EV_FREQUENT_CHECK; 5140 EV_FREQUENT_CHECK;
2934 5141
2935 ev_start (EV_A_ (W)w, ++preparecnt); 5142 ev_start (EV_A_ (W)w, ++preparecnt);
2936 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 5143 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
2937 prepares [preparecnt - 1] = w; 5144 prepares [preparecnt - 1] = w;
2938 5145
2939 EV_FREQUENT_CHECK; 5146 EV_FREQUENT_CHECK;
2940} 5147}
2941 5148
2942void 5149void
2943ev_prepare_stop (EV_P_ ev_prepare *w) 5150ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
2944{ 5151{
2945 clear_pending (EV_A_ (W)w); 5152 clear_pending (EV_A_ (W)w);
2946 if (expect_false (!ev_is_active (w))) 5153 if (ecb_expect_false (!ev_is_active (w)))
2947 return; 5154 return;
2948 5155
2949 EV_FREQUENT_CHECK; 5156 EV_FREQUENT_CHECK;
2950 5157
2951 { 5158 {
… …
2957 5164
2958 ev_stop (EV_A_ (W)w); 5165 ev_stop (EV_A_ (W)w);
2959 5166
2960 EV_FREQUENT_CHECK; 5167 EV_FREQUENT_CHECK;
2961} 5168}
5169#endif
2962 5170
5171#if EV_CHECK_ENABLE
2963void 5172void
2964ev_check_start (EV_P_ ev_check *w) 5173ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
2965{ 5174{
2966 if (expect_false (ev_is_active (w))) 5175 if (ecb_expect_false (ev_is_active (w)))
2967 return; 5176 return;
2968 5177
2969 EV_FREQUENT_CHECK; 5178 EV_FREQUENT_CHECK;
2970 5179
2971 ev_start (EV_A_ (W)w, ++checkcnt); 5180 ev_start (EV_A_ (W)w, ++checkcnt);
2972 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 5181 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
2973 checks [checkcnt - 1] = w; 5182 checks [checkcnt - 1] = w;
2974 5183
2975 EV_FREQUENT_CHECK; 5184 EV_FREQUENT_CHECK;
2976} 5185}
2977 5186
2978void 5187void
2979ev_check_stop (EV_P_ ev_check *w) 5188ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
2980{ 5189{
2981 clear_pending (EV_A_ (W)w); 5190 clear_pending (EV_A_ (W)w);
2982 if (expect_false (!ev_is_active (w))) 5191 if (ecb_expect_false (!ev_is_active (w)))
2983 return; 5192 return;
2984 5193
2985 EV_FREQUENT_CHECK; 5194 EV_FREQUENT_CHECK;
2986 5195
2987 { 5196 {
… …
2993 5202
2994 ev_stop (EV_A_ (W)w); 5203 ev_stop (EV_A_ (W)w);
2995 5204
2996 EV_FREQUENT_CHECK; 5205 EV_FREQUENT_CHECK;
2997} 5206}
5207#endif
2998 5208
2999#if EV_EMBED_ENABLE 5209#if EV_EMBED_ENABLE
3000void noinline 5210ecb_noinline
5211void
3001ev_embed_sweep (EV_P_ ev_embed *w) 5212ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
3002{ 5213{
3003 ev_loop (w->other, EVLOOP_NONBLOCK); 5214 ev_run (w->other, EVRUN_NOWAIT);
3004} 5215}
3005 5216
3006static void 5217static void
3007embed_io_cb (EV_P_ ev_io *io, int revents) 5218embed_io_cb (EV_P_ ev_io *io, int revents)
3008{ 5219{
3009 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 5220 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3010 5221
3011 if (ev_cb (w)) 5222 if (ev_cb (w))
3012 ev_feed_event (EV_A_ (W)w, EV_EMBED); 5223 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3013 else 5224 else
3014 ev_loop (w->other, EVLOOP_NONBLOCK); 5225 ev_run (w->other, EVRUN_NOWAIT);
3015} 5226}
3016 5227
3017static void 5228static void
3018embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 5229embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3019{ 5230{
3020 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 5231 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
3021 5232
3022 { 5233 {
3023 struct ev_loop *loop = w->other; 5234 EV_P = w->other;
3024 5235
3025 while (fdchangecnt) 5236 while (fdchangecnt)
3026 { 5237 {
3027 fd_reify (EV_A); 5238 fd_reify (EV_A);
3028 ev_loop (EV_A_ EVLOOP_NONBLOCK); 5239 ev_run (EV_A_ EVRUN_NOWAIT);
3029 } 5240 }
3030 } 5241 }
3031} 5242}
3032 5243
5244#if EV_FORK_ENABLE
3033static void 5245static void
3034embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) 5246embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
3035{ 5247{
3036 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 5248 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3037 5249
3038 ev_embed_stop (EV_A_ w); 5250 ev_embed_stop (EV_A_ w);
3039 5251
3040 { 5252 {
3041 struct ev_loop *loop = w->other; 5253 EV_P = w->other;
3042 5254
3043 ev_loop_fork (EV_A); 5255 ev_loop_fork (EV_A);
3044 ev_loop (EV_A_ EVLOOP_NONBLOCK); 5256 ev_run (EV_A_ EVRUN_NOWAIT);
3045 } 5257 }
3046 5258
3047 ev_embed_start (EV_A_ w); 5259 ev_embed_start (EV_A_ w);
3048} 5260}
5261#endif
3049 5262
3050#if 0 5263#if 0
3051static void 5264static void
3052embed_idle_cb (EV_P_ ev_idle *idle, int revents) 5265embed_idle_cb (EV_P_ ev_idle *idle, int revents)
3053{ 5266{
3054 ev_idle_stop (EV_A_ idle); 5267 ev_idle_stop (EV_A_ idle);
3055} 5268}
3056#endif 5269#endif
3057 5270
3058void 5271void
3059ev_embed_start (EV_P_ ev_embed *w) 5272ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
3060{ 5273{
3061 if (expect_false (ev_is_active (w))) 5274 if (ecb_expect_false (ev_is_active (w)))
3062 return; 5275 return;
3063 5276
3064 { 5277 {
3065 struct ev_loop *loop = w->other; 5278 EV_P = w->other;
3066 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 5279 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
3067 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 5280 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3068 } 5281 }
3069 5282
3070 EV_FREQUENT_CHECK; 5283 EV_FREQUENT_CHECK;
… …
3074 5287
3075 ev_prepare_init (&w->prepare, embed_prepare_cb); 5288 ev_prepare_init (&w->prepare, embed_prepare_cb);
3076 ev_set_priority (&w->prepare, EV_MINPRI); 5289 ev_set_priority (&w->prepare, EV_MINPRI);
3077 ev_prepare_start (EV_A_ &w->prepare); 5290 ev_prepare_start (EV_A_ &w->prepare);
3078 5291
5292#if EV_FORK_ENABLE
3079 ev_fork_init (&w->fork, embed_fork_cb); 5293 ev_fork_init (&w->fork, embed_fork_cb);
3080 ev_fork_start (EV_A_ &w->fork); 5294 ev_fork_start (EV_A_ &w->fork);
5295#endif
3081 5296
3082 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 5297 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
3083 5298
3084 ev_start (EV_A_ (W)w, 1); 5299 ev_start (EV_A_ (W)w, 1);
3085 5300
3086 EV_FREQUENT_CHECK; 5301 EV_FREQUENT_CHECK;
3087} 5302}
3088 5303
3089void 5304void
3090ev_embed_stop (EV_P_ ev_embed *w) 5305ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
3091{ 5306{
3092 clear_pending (EV_A_ (W)w); 5307 clear_pending (EV_A_ (W)w);
3093 if (expect_false (!ev_is_active (w))) 5308 if (ecb_expect_false (!ev_is_active (w)))
3094 return; 5309 return;
3095 5310
3096 EV_FREQUENT_CHECK; 5311 EV_FREQUENT_CHECK;
3097 5312
3098 ev_io_stop (EV_A_ &w->io); 5313 ev_io_stop (EV_A_ &w->io);
3099 ev_prepare_stop (EV_A_ &w->prepare); 5314 ev_prepare_stop (EV_A_ &w->prepare);
5315#if EV_FORK_ENABLE
3100 ev_fork_stop (EV_A_ &w->fork); 5316 ev_fork_stop (EV_A_ &w->fork);
5317#endif
5318
5319 ev_stop (EV_A_ (W)w);
3101 5320
3102 EV_FREQUENT_CHECK; 5321 EV_FREQUENT_CHECK;
3103} 5322}
3104#endif 5323#endif
3105 5324
3106#if EV_FORK_ENABLE 5325#if EV_FORK_ENABLE
3107void 5326void
3108ev_fork_start (EV_P_ ev_fork *w) 5327ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
3109{ 5328{
3110 if (expect_false (ev_is_active (w))) 5329 if (ecb_expect_false (ev_is_active (w)))
3111 return; 5330 return;
3112 5331
3113 EV_FREQUENT_CHECK; 5332 EV_FREQUENT_CHECK;
3114 5333
3115 ev_start (EV_A_ (W)w, ++forkcnt); 5334 ev_start (EV_A_ (W)w, ++forkcnt);
3116 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 5335 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
3117 forks [forkcnt - 1] = w; 5336 forks [forkcnt - 1] = w;
3118 5337
3119 EV_FREQUENT_CHECK; 5338 EV_FREQUENT_CHECK;
3120} 5339}
3121 5340
3122void 5341void
3123ev_fork_stop (EV_P_ ev_fork *w) 5342ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
3124{ 5343{
3125 clear_pending (EV_A_ (W)w); 5344 clear_pending (EV_A_ (W)w);
3126 if (expect_false (!ev_is_active (w))) 5345 if (ecb_expect_false (!ev_is_active (w)))
3127 return; 5346 return;
3128 5347
3129 EV_FREQUENT_CHECK; 5348 EV_FREQUENT_CHECK;
3130 5349
3131 { 5350 {
… …
3139 5358
3140 EV_FREQUENT_CHECK; 5359 EV_FREQUENT_CHECK;
3141} 5360}
3142#endif 5361#endif
3143 5362
5363#if EV_CLEANUP_ENABLE
5364void
5365ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
5366{
5367 if (ecb_expect_false (ev_is_active (w)))
5368 return;
5369
5370 EV_FREQUENT_CHECK;
5371
5372 ev_start (EV_A_ (W)w, ++cleanupcnt);
5373 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
5374 cleanups [cleanupcnt - 1] = w;
5375
5376 /* cleanup watchers should never keep a refcount on the loop */
5377 ev_unref (EV_A);
5378 EV_FREQUENT_CHECK;
5379}
5380
5381void
5382ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
5383{
5384 clear_pending (EV_A_ (W)w);
5385 if (ecb_expect_false (!ev_is_active (w)))
5386 return;
5387
5388 EV_FREQUENT_CHECK;
5389 ev_ref (EV_A);
5390
5391 {
5392 int active = ev_active (w);
5393
5394 cleanups [active - 1] = cleanups [--cleanupcnt];
5395 ev_active (cleanups [active - 1]) = active;
5396 }
5397
5398 ev_stop (EV_A_ (W)w);
5399
5400 EV_FREQUENT_CHECK;
5401}
5402#endif
5403
3144#if EV_ASYNC_ENABLE 5404#if EV_ASYNC_ENABLE
3145void 5405void
3146ev_async_start (EV_P_ ev_async *w) 5406ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
3147{ 5407{
3148 if (expect_false (ev_is_active (w))) 5408 if (ecb_expect_false (ev_is_active (w)))
3149 return; 5409 return;
3150 5410
5411 w->sent = 0;
5412
3151 evpipe_init (EV_A); 5413 evpipe_init (EV_A);
3152 5414
3153 EV_FREQUENT_CHECK; 5415 EV_FREQUENT_CHECK;
3154 5416
3155 ev_start (EV_A_ (W)w, ++asynccnt); 5417 ev_start (EV_A_ (W)w, ++asynccnt);
3156 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 5418 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
3157 asyncs [asynccnt - 1] = w; 5419 asyncs [asynccnt - 1] = w;
3158 5420
3159 EV_FREQUENT_CHECK; 5421 EV_FREQUENT_CHECK;
3160} 5422}
3161 5423
3162void 5424void
3163ev_async_stop (EV_P_ ev_async *w) 5425ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
3164{ 5426{
3165 clear_pending (EV_A_ (W)w); 5427 clear_pending (EV_A_ (W)w);
3166 if (expect_false (!ev_is_active (w))) 5428 if (ecb_expect_false (!ev_is_active (w)))
3167 return; 5429 return;
3168 5430
3169 EV_FREQUENT_CHECK; 5431 EV_FREQUENT_CHECK;
3170 5432
3171 { 5433 {
… …
3179 5441
3180 EV_FREQUENT_CHECK; 5442 EV_FREQUENT_CHECK;
3181} 5443}
3182 5444
3183void 5445void
3184ev_async_send (EV_P_ ev_async *w) 5446ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
3185{ 5447{
3186 w->sent = 1; 5448 w->sent = 1;
3187 evpipe_write (EV_A_ &gotasync); 5449 evpipe_write (EV_A_ &async_pending);
3188} 5450}
3189#endif 5451#endif
3190 5452
3191/*****************************************************************************/ 5453/*****************************************************************************/
3192 5454
… …
3226 5488
3227 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5489 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3228} 5490}
3229 5491
3230void 5492void
3231ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 5493ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
3232{ 5494{
3233 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5495 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3234
3235 if (expect_false (!once))
3236 {
3237 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
3238 return;
3239 }
3240 5496
3241 once->cb = cb; 5497 once->cb = cb;
3242 once->arg = arg; 5498 once->arg = arg;
3243 5499
3244 ev_init (&once->io, once_cb_io); 5500 ev_init (&once->io, once_cb_io);
… …
3257} 5513}
3258 5514
3259/*****************************************************************************/ 5515/*****************************************************************************/
3260 5516
3261#if EV_WALK_ENABLE 5517#if EV_WALK_ENABLE
5518ecb_cold
3262void 5519void
3263ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 5520ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
3264{ 5521{
3265 int i, j; 5522 int i, j;
3266 ev_watcher_list *wl, *wn; 5523 ev_watcher_list *wl, *wn;
3267 5524
3268 if (types & (EV_IO | EV_EMBED)) 5525 if (types & (EV_IO | EV_EMBED))
… …
3311 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 5568 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3312#endif 5569#endif
3313 5570
3314#if EV_IDLE_ENABLE 5571#if EV_IDLE_ENABLE
3315 if (types & EV_IDLE) 5572 if (types & EV_IDLE)
3316 for (j = NUMPRI; i--; ) 5573 for (j = NUMPRI; j--; )
3317 for (i = idlecnt [j]; i--; ) 5574 for (i = idlecnt [j]; i--; )
3318 cb (EV_A_ EV_IDLE, idles [j][i]); 5575 cb (EV_A_ EV_IDLE, idles [j][i]);
3319#endif 5576#endif
3320 5577
3321#if EV_FORK_ENABLE 5578#if EV_FORK_ENABLE
… …
3329 if (types & EV_ASYNC) 5586 if (types & EV_ASYNC)
3330 for (i = asynccnt; i--; ) 5587 for (i = asynccnt; i--; )
3331 cb (EV_A_ EV_ASYNC, asyncs [i]); 5588 cb (EV_A_ EV_ASYNC, asyncs [i]);
3332#endif 5589#endif
3333 5590
5591#if EV_PREPARE_ENABLE
3334 if (types & EV_PREPARE) 5592 if (types & EV_PREPARE)
3335 for (i = preparecnt; i--; ) 5593 for (i = preparecnt; i--; )
3336#if EV_EMBED_ENABLE 5594# if EV_EMBED_ENABLE
3337 if (ev_cb (prepares [i]) != embed_prepare_cb) 5595 if (ev_cb (prepares [i]) != embed_prepare_cb)
3338#endif 5596# endif
3339 cb (EV_A_ EV_PREPARE, prepares [i]); 5597 cb (EV_A_ EV_PREPARE, prepares [i]);
5598#endif
3340 5599
5600#if EV_CHECK_ENABLE
3341 if (types & EV_CHECK) 5601 if (types & EV_CHECK)
3342 for (i = checkcnt; i--; ) 5602 for (i = checkcnt; i--; )
3343 cb (EV_A_ EV_CHECK, checks [i]); 5603 cb (EV_A_ EV_CHECK, checks [i]);
5604#endif
3344 5605
5606#if EV_SIGNAL_ENABLE
3345 if (types & EV_SIGNAL) 5607 if (types & EV_SIGNAL)
3346 for (i = 0; i < signalmax; ++i) 5608 for (i = 0; i < EV_NSIG - 1; ++i)
3347 for (wl = signals [i].head; wl; ) 5609 for (wl = signals [i].head; wl; )
3348 { 5610 {
3349 wn = wl->next; 5611 wn = wl->next;
3350 cb (EV_A_ EV_SIGNAL, wl); 5612 cb (EV_A_ EV_SIGNAL, wl);
3351 wl = wn; 5613 wl = wn;
3352 } 5614 }
5615#endif
3353 5616
5617#if EV_CHILD_ENABLE
3354 if (types & EV_CHILD) 5618 if (types & EV_CHILD)
3355 for (i = EV_PID_HASHSIZE; i--; ) 5619 for (i = (EV_PID_HASHSIZE); i--; )
3356 for (wl = childs [i]; wl; ) 5620 for (wl = childs [i]; wl; )
3357 { 5621 {
3358 wn = wl->next; 5622 wn = wl->next;
3359 cb (EV_A_ EV_CHILD, wl); 5623 cb (EV_A_ EV_CHILD, wl);
3360 wl = wn; 5624 wl = wn;
3361 } 5625 }
5626#endif
3362/* EV_STAT 0x00001000 /* stat data changed */ 5627/* EV_STAT 0x00001000 /* stat data changed */
3363/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 5628/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3364} 5629}
3365#endif 5630#endif
3366 5631
3367#if EV_MULTIPLICITY 5632#if EV_MULTIPLICITY
3368 #include "ev_wrap.h" 5633 #include "ev_wrap.h"
3369#endif 5634#endif
3370 5635
3371#ifdef __cplusplus
3372}
3373#endif
3374

Diff Legend

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