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Comparing libev/ev.c (file contents):
Revision 1.288 by root, Sat Apr 25 14:12:48 2009 UTC vs.
Revision 1.534 by root, Thu Jul 30 00:59:36 2020 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007-2020 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
10 * 1. Redistributions of source code must retain the above copyright notice, 10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer. 11 * this list of conditions and the following disclaimer.
12 * 12 *
13 * 2. Redistributions in binary form must reproduce the above copyright 13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the 14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution. 15 * documentation and/or other materials provided with the distribution.
16 * 16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- 18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO 19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- 20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
… …
35 * and other provisions required by the GPL. If you do not delete the 35 * and other provisions required by the GPL. If you do not delete the
36 * provisions above, a recipient may use your version of this file under 36 * provisions above, a recipient may use your version of this file under
37 * either the BSD or the GPL. 37 * either the BSD or the GPL.
38 */ 38 */
39 39
40#ifdef __cplusplus
41extern "C" {
42#endif
43
44/* this big block deduces configuration from config.h */ 40/* this big block deduces configuration from config.h */
45#ifndef EV_STANDALONE 41#ifndef EV_STANDALONE
46# ifdef EV_CONFIG_H 42# ifdef EV_CONFIG_H
47# include EV_CONFIG_H 43# include EV_CONFIG_H
48# else 44# else
49# include "config.h" 45# include "config.h"
46# endif
47
48# if HAVE_FLOOR
49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1
51# endif
50# endif 52# endif
51 53
52# if HAVE_CLOCK_SYSCALL 54# if HAVE_CLOCK_SYSCALL
53# ifndef EV_USE_CLOCK_SYSCALL 55# ifndef EV_USE_CLOCK_SYSCALL
54# define EV_USE_CLOCK_SYSCALL 1 56# define EV_USE_CLOCK_SYSCALL 1
… …
57# endif 59# endif
58# ifndef EV_USE_MONOTONIC 60# ifndef EV_USE_MONOTONIC
59# define EV_USE_MONOTONIC 1 61# define EV_USE_MONOTONIC 1
60# endif 62# endif
61# endif 63# endif
64# elif !defined EV_USE_CLOCK_SYSCALL
65# define EV_USE_CLOCK_SYSCALL 0
62# endif 66# endif
63 67
64# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
65# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
66# define EV_USE_MONOTONIC 1 70# define EV_USE_MONOTONIC 1
… …
75# ifndef EV_USE_REALTIME 79# ifndef EV_USE_REALTIME
76# define EV_USE_REALTIME 0 80# define EV_USE_REALTIME 0
77# endif 81# endif
78# endif 82# endif
79 83
84# if HAVE_NANOSLEEP
80# ifndef EV_USE_NANOSLEEP 85# ifndef EV_USE_NANOSLEEP
81# if HAVE_NANOSLEEP
82# define EV_USE_NANOSLEEP 1 86# define EV_USE_NANOSLEEP EV_FEATURE_OS
87# endif
83# else 88# else
89# undef EV_USE_NANOSLEEP
84# define EV_USE_NANOSLEEP 0 90# define EV_USE_NANOSLEEP 0
91# endif
92
93# if HAVE_SELECT && HAVE_SYS_SELECT_H
94# ifndef EV_USE_SELECT
95# define EV_USE_SELECT EV_FEATURE_BACKENDS
85# endif 96# endif
97# else
98# undef EV_USE_SELECT
99# define EV_USE_SELECT 0
86# endif 100# endif
87 101
102# if HAVE_POLL && HAVE_POLL_H
88# ifndef EV_USE_SELECT 103# ifndef EV_USE_POLL
89# if HAVE_SELECT && HAVE_SYS_SELECT_H 104# define EV_USE_POLL EV_FEATURE_BACKENDS
90# define EV_USE_SELECT 1
91# else
92# define EV_USE_SELECT 0
93# endif 105# endif
94# endif
95
96# ifndef EV_USE_POLL
97# if HAVE_POLL && HAVE_POLL_H
98# define EV_USE_POLL 1
99# else 106# else
107# undef EV_USE_POLL
100# define EV_USE_POLL 0 108# define EV_USE_POLL 0
101# endif
102# endif 109# endif
103 110
104# ifndef EV_USE_EPOLL
105# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 111# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
106# define EV_USE_EPOLL 1 112# ifndef EV_USE_EPOLL
107# else 113# define EV_USE_EPOLL EV_FEATURE_BACKENDS
108# define EV_USE_EPOLL 0
109# endif 114# endif
115# else
116# undef EV_USE_EPOLL
117# define EV_USE_EPOLL 0
110# endif 118# endif
111 119
112# ifndef EV_USE_KQUEUE 120# if HAVE_LINUX_AIO_ABI_H
113# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 121# ifndef EV_USE_LINUXAIO
114# define EV_USE_KQUEUE 1 122# define EV_USE_LINUXAIO 0 /* was: EV_FEATURE_BACKENDS, always off by default */
115# else
116# define EV_USE_KQUEUE 0
117# endif 123# endif
124# else
125# undef EV_USE_LINUXAIO
126# define EV_USE_LINUXAIO 0
118# endif 127# endif
119 128
129# if HAVE_LINUX_FS_H && HAVE_SYS_TIMERFD_H && HAVE_KERNEL_RWF_T
120# ifndef EV_USE_PORT 130# ifndef EV_USE_IOURING
121# if HAVE_PORT_H && HAVE_PORT_CREATE 131# define EV_USE_IOURING EV_FEATURE_BACKENDS
122# define EV_USE_PORT 1
123# else
124# define EV_USE_PORT 0
125# endif 132# endif
126# endif
127
128# ifndef EV_USE_INOTIFY
129# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
130# define EV_USE_INOTIFY 1
131# else 133# else
134# undef EV_USE_IOURING
132# define EV_USE_INOTIFY 0 135# define EV_USE_IOURING 0
133# endif
134# endif
135
136# ifndef EV_USE_EVENTFD
137# if HAVE_EVENTFD
138# define EV_USE_EVENTFD 1
139# else
140# define EV_USE_EVENTFD 0
141# endif
142# endif 136# endif
143 137
138# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
139# ifndef EV_USE_KQUEUE
140# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
141# endif
142# else
143# undef EV_USE_KQUEUE
144# define EV_USE_KQUEUE 0
144#endif 145# endif
146
147# if HAVE_PORT_H && HAVE_PORT_CREATE
148# ifndef EV_USE_PORT
149# define EV_USE_PORT EV_FEATURE_BACKENDS
150# endif
151# else
152# undef EV_USE_PORT
153# define EV_USE_PORT 0
154# endif
145 155
146#include <math.h> 156# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
157# ifndef EV_USE_INOTIFY
158# define EV_USE_INOTIFY EV_FEATURE_OS
159# endif
160# else
161# undef EV_USE_INOTIFY
162# define EV_USE_INOTIFY 0
163# endif
164
165# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
166# ifndef EV_USE_SIGNALFD
167# define EV_USE_SIGNALFD EV_FEATURE_OS
168# endif
169# else
170# undef EV_USE_SIGNALFD
171# define EV_USE_SIGNALFD 0
172# endif
173
174# if HAVE_EVENTFD
175# ifndef EV_USE_EVENTFD
176# define EV_USE_EVENTFD EV_FEATURE_OS
177# endif
178# else
179# undef EV_USE_EVENTFD
180# define EV_USE_EVENTFD 0
181# endif
182
183# if HAVE_SYS_TIMERFD_H
184# ifndef EV_USE_TIMERFD
185# define EV_USE_TIMERFD EV_FEATURE_OS
186# endif
187# else
188# undef EV_USE_TIMERFD
189# define EV_USE_TIMERFD 0
190# endif
191
192#endif
193
194/* OS X, in its infinite idiocy, actually HARDCODES
195 * a limit of 1024 into their select. Where people have brains,
196 * OS X engineers apparently have a vacuum. Or maybe they were
197 * ordered to have a vacuum, or they do anything for money.
198 * This might help. Or not.
199 * Note that this must be defined early, as other include files
200 * will rely on this define as well.
201 */
202#define _DARWIN_UNLIMITED_SELECT 1
203
147#include <stdlib.h> 204#include <stdlib.h>
205#include <string.h>
148#include <fcntl.h> 206#include <fcntl.h>
149#include <stddef.h> 207#include <stddef.h>
150 208
151#include <stdio.h> 209#include <stdio.h>
152 210
153#include <assert.h> 211#include <assert.h>
154#include <errno.h> 212#include <errno.h>
155#include <sys/types.h> 213#include <sys/types.h>
156#include <time.h> 214#include <time.h>
215#include <limits.h>
157 216
158#include <signal.h> 217#include <signal.h>
159 218
160#ifdef EV_H 219#ifdef EV_H
161# include EV_H 220# include EV_H
162#else 221#else
163# include "ev.h" 222# include "ev.h"
223#endif
224
225#if EV_NO_THREADS
226# undef EV_NO_SMP
227# define EV_NO_SMP 1
228# undef ECB_NO_THREADS
229# define ECB_NO_THREADS 1
230#endif
231#if EV_NO_SMP
232# undef EV_NO_SMP
233# define ECB_NO_SMP 1
164#endif 234#endif
165 235
166#ifndef _WIN32 236#ifndef _WIN32
167# include <sys/time.h> 237# include <sys/time.h>
168# include <sys/wait.h> 238# include <sys/wait.h>
169# include <unistd.h> 239# include <unistd.h>
170#else 240#else
171# include <io.h> 241# include <io.h>
172# define WIN32_LEAN_AND_MEAN 242# define WIN32_LEAN_AND_MEAN
243# include <winsock2.h>
173# include <windows.h> 244# include <windows.h>
174# ifndef EV_SELECT_IS_WINSOCKET 245# ifndef EV_SELECT_IS_WINSOCKET
175# define EV_SELECT_IS_WINSOCKET 1 246# define EV_SELECT_IS_WINSOCKET 1
176# endif 247# endif
248# undef EV_AVOID_STDIO
177#endif 249#endif
178 250
179/* this block tries to deduce configuration from header-defined symbols and defaults */ 251/* this block tries to deduce configuration from header-defined symbols and defaults */
180 252
253/* try to deduce the maximum number of signals on this platform */
254#if defined EV_NSIG
255/* use what's provided */
256#elif defined NSIG
257# define EV_NSIG (NSIG)
258#elif defined _NSIG
259# define EV_NSIG (_NSIG)
260#elif defined SIGMAX
261# define EV_NSIG (SIGMAX+1)
262#elif defined SIG_MAX
263# define EV_NSIG (SIG_MAX+1)
264#elif defined _SIG_MAX
265# define EV_NSIG (_SIG_MAX+1)
266#elif defined MAXSIG
267# define EV_NSIG (MAXSIG+1)
268#elif defined MAX_SIG
269# define EV_NSIG (MAX_SIG+1)
270#elif defined SIGARRAYSIZE
271# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
272#elif defined _sys_nsig
273# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
274#else
275# define EV_NSIG (8 * sizeof (sigset_t) + 1)
276#endif
277
278#ifndef EV_USE_FLOOR
279# define EV_USE_FLOOR 0
280#endif
281
181#ifndef EV_USE_CLOCK_SYSCALL 282#ifndef EV_USE_CLOCK_SYSCALL
182# if __linux && __GLIBC__ >= 2 283# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
183# define EV_USE_CLOCK_SYSCALL 1 284# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
184# else 285# else
185# define EV_USE_CLOCK_SYSCALL 0 286# define EV_USE_CLOCK_SYSCALL 0
186# endif 287# endif
187#endif 288#endif
188 289
290#if !(_POSIX_TIMERS > 0)
291# ifndef EV_USE_MONOTONIC
292# define EV_USE_MONOTONIC 0
293# endif
294# ifndef EV_USE_REALTIME
295# define EV_USE_REALTIME 0
296# endif
297#endif
298
189#ifndef EV_USE_MONOTONIC 299#ifndef EV_USE_MONOTONIC
190# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 300# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
191# define EV_USE_MONOTONIC 1 301# define EV_USE_MONOTONIC EV_FEATURE_OS
192# else 302# else
193# define EV_USE_MONOTONIC 0 303# define EV_USE_MONOTONIC 0
194# endif 304# endif
195#endif 305#endif
196 306
… …
198# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 308# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
199#endif 309#endif
200 310
201#ifndef EV_USE_NANOSLEEP 311#ifndef EV_USE_NANOSLEEP
202# if _POSIX_C_SOURCE >= 199309L 312# if _POSIX_C_SOURCE >= 199309L
203# define EV_USE_NANOSLEEP 1 313# define EV_USE_NANOSLEEP EV_FEATURE_OS
204# else 314# else
205# define EV_USE_NANOSLEEP 0 315# define EV_USE_NANOSLEEP 0
206# endif 316# endif
207#endif 317#endif
208 318
209#ifndef EV_USE_SELECT 319#ifndef EV_USE_SELECT
210# define EV_USE_SELECT 1 320# define EV_USE_SELECT EV_FEATURE_BACKENDS
211#endif 321#endif
212 322
213#ifndef EV_USE_POLL 323#ifndef EV_USE_POLL
214# ifdef _WIN32 324# ifdef _WIN32
215# define EV_USE_POLL 0 325# define EV_USE_POLL 0
216# else 326# else
217# define EV_USE_POLL 1 327# define EV_USE_POLL EV_FEATURE_BACKENDS
218# endif 328# endif
219#endif 329#endif
220 330
221#ifndef EV_USE_EPOLL 331#ifndef EV_USE_EPOLL
222# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 332# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
223# define EV_USE_EPOLL 1 333# define EV_USE_EPOLL EV_FEATURE_BACKENDS
224# else 334# else
225# define EV_USE_EPOLL 0 335# define EV_USE_EPOLL 0
226# endif 336# endif
227#endif 337#endif
228 338
… …
232 342
233#ifndef EV_USE_PORT 343#ifndef EV_USE_PORT
234# define EV_USE_PORT 0 344# define EV_USE_PORT 0
235#endif 345#endif
236 346
347#ifndef EV_USE_LINUXAIO
348# if __linux /* libev currently assumes linux/aio_abi.h is always available on linux */
349# define EV_USE_LINUXAIO 0 /* was: 1, always off by default */
350# else
351# define EV_USE_LINUXAIO 0
352# endif
353#endif
354
355#ifndef EV_USE_IOURING
356# if __linux /* later checks might disable again */
357# define EV_USE_IOURING 1
358# else
359# define EV_USE_IOURING 0
360# endif
361#endif
362
237#ifndef EV_USE_INOTIFY 363#ifndef EV_USE_INOTIFY
238# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 364# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
239# define EV_USE_INOTIFY 1 365# define EV_USE_INOTIFY EV_FEATURE_OS
240# else 366# else
241# define EV_USE_INOTIFY 0 367# define EV_USE_INOTIFY 0
242# endif 368# endif
243#endif 369#endif
244 370
245#ifndef EV_PID_HASHSIZE 371#ifndef EV_PID_HASHSIZE
246# if EV_MINIMAL 372# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
247# define EV_PID_HASHSIZE 1
248# else
249# define EV_PID_HASHSIZE 16
250# endif
251#endif 373#endif
252 374
253#ifndef EV_INOTIFY_HASHSIZE 375#ifndef EV_INOTIFY_HASHSIZE
254# if EV_MINIMAL 376# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
255# define EV_INOTIFY_HASHSIZE 1
256# else
257# define EV_INOTIFY_HASHSIZE 16
258# endif
259#endif 377#endif
260 378
261#ifndef EV_USE_EVENTFD 379#ifndef EV_USE_EVENTFD
262# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 380# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
263# define EV_USE_EVENTFD 1 381# define EV_USE_EVENTFD EV_FEATURE_OS
264# else 382# else
265# define EV_USE_EVENTFD 0 383# define EV_USE_EVENTFD 0
384# endif
385#endif
386
387#ifndef EV_USE_SIGNALFD
388# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
389# define EV_USE_SIGNALFD EV_FEATURE_OS
390# else
391# define EV_USE_SIGNALFD 0
392# endif
393#endif
394
395#ifndef EV_USE_TIMERFD
396# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 8))
397# define EV_USE_TIMERFD EV_FEATURE_OS
398# else
399# define EV_USE_TIMERFD 0
266# endif 400# endif
267#endif 401#endif
268 402
269#if 0 /* debugging */ 403#if 0 /* debugging */
270# define EV_VERIFY 3 404# define EV_VERIFY 3
271# define EV_USE_4HEAP 1 405# define EV_USE_4HEAP 1
272# define EV_HEAP_CACHE_AT 1 406# define EV_HEAP_CACHE_AT 1
273#endif 407#endif
274 408
275#ifndef EV_VERIFY 409#ifndef EV_VERIFY
276# define EV_VERIFY !EV_MINIMAL 410# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
277#endif 411#endif
278 412
279#ifndef EV_USE_4HEAP 413#ifndef EV_USE_4HEAP
280# define EV_USE_4HEAP !EV_MINIMAL 414# define EV_USE_4HEAP EV_FEATURE_DATA
281#endif 415#endif
282 416
283#ifndef EV_HEAP_CACHE_AT 417#ifndef EV_HEAP_CACHE_AT
284# define EV_HEAP_CACHE_AT !EV_MINIMAL 418# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
419#endif
420
421#ifdef __ANDROID__
422/* supposedly, android doesn't typedef fd_mask */
423# undef EV_USE_SELECT
424# define EV_USE_SELECT 0
425/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
426# undef EV_USE_CLOCK_SYSCALL
427# define EV_USE_CLOCK_SYSCALL 0
428#endif
429
430/* aix's poll.h seems to cause lots of trouble */
431#ifdef _AIX
432/* AIX has a completely broken poll.h header */
433# undef EV_USE_POLL
434# define EV_USE_POLL 0
435#endif
436
437/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
438/* which makes programs even slower. might work on other unices, too. */
439#if EV_USE_CLOCK_SYSCALL
440# include <sys/syscall.h>
441# ifdef SYS_clock_gettime
442# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
443# undef EV_USE_MONOTONIC
444# define EV_USE_MONOTONIC 1
445# define EV_NEED_SYSCALL 1
446# else
447# undef EV_USE_CLOCK_SYSCALL
448# define EV_USE_CLOCK_SYSCALL 0
449# endif
285#endif 450#endif
286 451
287/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 452/* this block fixes any misconfiguration where we know we run into trouble otherwise */
288 453
289#ifndef CLOCK_MONOTONIC 454#ifndef CLOCK_MONOTONIC
… …
299#if !EV_STAT_ENABLE 464#if !EV_STAT_ENABLE
300# undef EV_USE_INOTIFY 465# undef EV_USE_INOTIFY
301# define EV_USE_INOTIFY 0 466# define EV_USE_INOTIFY 0
302#endif 467#endif
303 468
469#if __linux && EV_USE_IOURING
470# include <linux/version.h>
471# if LINUX_VERSION_CODE < KERNEL_VERSION(4,14,0)
472# undef EV_USE_IOURING
473# define EV_USE_IOURING 0
474# endif
475#endif
476
304#if !EV_USE_NANOSLEEP 477#if !EV_USE_NANOSLEEP
305# ifndef _WIN32 478/* hp-ux has it in sys/time.h, which we unconditionally include above */
479# if !defined _WIN32 && !defined __hpux
306# include <sys/select.h> 480# include <sys/select.h>
307# endif 481# endif
308#endif 482#endif
309 483
484#if EV_USE_LINUXAIO
485# include <sys/syscall.h>
486# if SYS_io_getevents && EV_USE_EPOLL /* linuxaio backend requires epoll backend */
487# define EV_NEED_SYSCALL 1
488# else
489# undef EV_USE_LINUXAIO
490# define EV_USE_LINUXAIO 0
491# endif
492#endif
493
494#if EV_USE_IOURING
495# include <sys/syscall.h>
496# if !SYS_io_uring_register && __linux && !__alpha
497# define SYS_io_uring_setup 425
498# define SYS_io_uring_enter 426
499# define SYS_io_uring_register 427
500# endif
501# if SYS_io_uring_setup && EV_USE_EPOLL /* iouring backend requires epoll backend */
502# define EV_NEED_SYSCALL 1
503# else
504# undef EV_USE_IOURING
505# define EV_USE_IOURING 0
506# endif
507#endif
508
310#if EV_USE_INOTIFY 509#if EV_USE_INOTIFY
311# include <sys/utsname.h>
312# include <sys/statfs.h> 510# include <sys/statfs.h>
313# include <sys/inotify.h> 511# include <sys/inotify.h>
314/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 512/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
315# ifndef IN_DONT_FOLLOW 513# ifndef IN_DONT_FOLLOW
316# undef EV_USE_INOTIFY 514# undef EV_USE_INOTIFY
317# define EV_USE_INOTIFY 0 515# define EV_USE_INOTIFY 0
318# endif 516# endif
319#endif 517#endif
320 518
321#if EV_SELECT_IS_WINSOCKET
322# include <winsock.h>
323#endif
324
325/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
326/* which makes programs even slower. might work on other unices, too. */
327#if EV_USE_CLOCK_SYSCALL
328# include <syscall.h>
329# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
330# undef EV_USE_MONOTONIC
331# define EV_USE_MONOTONIC 1
332#endif
333
334#if EV_USE_EVENTFD 519#if EV_USE_EVENTFD
335/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 520/* our minimum requirement is glibc 2.7 which has the stub, but not the full header */
336# include <stdint.h> 521# include <stdint.h>
337# ifdef __cplusplus 522# ifndef EFD_NONBLOCK
338extern "C" { 523# define EFD_NONBLOCK O_NONBLOCK
339# endif 524# endif
340int eventfd (unsigned int initval, int flags); 525# ifndef EFD_CLOEXEC
341# ifdef __cplusplus 526# ifdef O_CLOEXEC
342} 527# define EFD_CLOEXEC O_CLOEXEC
528# else
529# define EFD_CLOEXEC 02000000
530# endif
343# endif 531# endif
532EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
533#endif
534
535#if EV_USE_SIGNALFD
536/* our minimum requirement is glibc 2.7 which has the stub, but not the full header */
537# include <stdint.h>
538# ifndef SFD_NONBLOCK
539# define SFD_NONBLOCK O_NONBLOCK
344#endif 540# endif
541# ifndef SFD_CLOEXEC
542# ifdef O_CLOEXEC
543# define SFD_CLOEXEC O_CLOEXEC
544# else
545# define SFD_CLOEXEC 02000000
546# endif
547# endif
548EV_CPP (extern "C") int (signalfd) (int fd, const sigset_t *mask, int flags);
345 549
346/**/ 550struct signalfd_siginfo
551{
552 uint32_t ssi_signo;
553 char pad[128 - sizeof (uint32_t)];
554};
555#endif
556
557/* for timerfd, libev core requires TFD_TIMER_CANCEL_ON_SET &c */
558#if EV_USE_TIMERFD
559# include <sys/timerfd.h>
560/* timerfd is only used for periodics */
561# if !(defined (TFD_TIMER_CANCEL_ON_SET) && defined (TFD_CLOEXEC) && defined (TFD_NONBLOCK)) || !EV_PERIODIC_ENABLE
562# undef EV_USE_TIMERFD
563# define EV_USE_TIMERFD 0
564# endif
565#endif
566
567/*****************************************************************************/
347 568
348#if EV_VERIFY >= 3 569#if EV_VERIFY >= 3
349# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 570# define EV_FREQUENT_CHECK ev_verify (EV_A)
350#else 571#else
351# define EV_FREQUENT_CHECK do { } while (0) 572# define EV_FREQUENT_CHECK do { } while (0)
352#endif 573#endif
353 574
354/* 575/*
355 * This is used to avoid floating point rounding problems. 576 * This is used to work around floating point rounding problems.
356 * It is added to ev_rt_now when scheduling periodics
357 * to ensure progress, time-wise, even when rounding
358 * errors are against us.
359 * This value is good at least till the year 4000. 577 * This value is good at least till the year 4000.
360 * Better solutions welcome.
361 */ 578 */
362#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 579#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
580/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
363 581
364#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 582#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
365#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 583#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
366/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */ 584#define MAX_BLOCKTIME2 1500001.07 /* same, but when timerfd is used to detect jumps, also safe delay to not overflow */
367 585
586/* find a portable timestamp that is "always" in the future but fits into time_t.
587 * this is quite hard, and we are mostly guessing - we handle 32 bit signed/unsigned time_t,
588 * and sizes larger than 32 bit, and maybe the unlikely floating point time_t */
589#define EV_TSTAMP_HUGE \
590 (sizeof (time_t) >= 8 ? 10000000000000. \
591 : 0 < (time_t)4294967295 ? 4294967295. \
592 : 2147483647.) \
593
594#ifndef EV_TS_CONST
595# define EV_TS_CONST(nv) nv
596# define EV_TS_TO_MSEC(a) a * 1e3 + 0.9999
597# define EV_TS_FROM_USEC(us) us * 1e-6
598# define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
599# define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
600# define EV_TV_GET(tv) ((tv).tv_sec + (tv).tv_usec * 1e-6)
601# define EV_TS_GET(ts) ((ts).tv_sec + (ts).tv_nsec * 1e-9)
602#endif
603
604/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
605/* ECB.H BEGIN */
606/*
607 * libecb - http://software.schmorp.de/pkg/libecb
608 *
609 * Copyright (©) 2009-2015,2018-2020 Marc Alexander Lehmann <libecb@schmorp.de>
610 * Copyright (©) 2011 Emanuele Giaquinta
611 * All rights reserved.
612 *
613 * Redistribution and use in source and binary forms, with or without modifica-
614 * tion, are permitted provided that the following conditions are met:
615 *
616 * 1. Redistributions of source code must retain the above copyright notice,
617 * this list of conditions and the following disclaimer.
618 *
619 * 2. Redistributions in binary form must reproduce the above copyright
620 * notice, this list of conditions and the following disclaimer in the
621 * documentation and/or other materials provided with the distribution.
622 *
623 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
624 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
625 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
626 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
627 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
628 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
629 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
630 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
631 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
632 * OF THE POSSIBILITY OF SUCH DAMAGE.
633 *
634 * Alternatively, the contents of this file may be used under the terms of
635 * the GNU General Public License ("GPL") version 2 or any later version,
636 * in which case the provisions of the GPL are applicable instead of
637 * the above. If you wish to allow the use of your version of this file
638 * only under the terms of the GPL and not to allow others to use your
639 * version of this file under the BSD license, indicate your decision
640 * by deleting the provisions above and replace them with the notice
641 * and other provisions required by the GPL. If you do not delete the
642 * provisions above, a recipient may use your version of this file under
643 * either the BSD or the GPL.
644 */
645
646#ifndef ECB_H
647#define ECB_H
648
649/* 16 bits major, 16 bits minor */
650#define ECB_VERSION 0x00010008
651
652#include <string.h> /* for memcpy */
653
654#if defined (_WIN32) && !defined (__MINGW32__)
655 typedef signed char int8_t;
656 typedef unsigned char uint8_t;
657 typedef signed char int_fast8_t;
658 typedef unsigned char uint_fast8_t;
659 typedef signed short int16_t;
660 typedef unsigned short uint16_t;
661 typedef signed int int_fast16_t;
662 typedef unsigned int uint_fast16_t;
663 typedef signed int int32_t;
664 typedef unsigned int uint32_t;
665 typedef signed int int_fast32_t;
666 typedef unsigned int uint_fast32_t;
368#if __GNUC__ >= 4 667 #if __GNUC__
369# define expect(expr,value) __builtin_expect ((expr),(value)) 668 typedef signed long long int64_t;
370# define noinline __attribute__ ((noinline)) 669 typedef unsigned long long uint64_t;
670 #else /* _MSC_VER || __BORLANDC__ */
671 typedef signed __int64 int64_t;
672 typedef unsigned __int64 uint64_t;
673 #endif
674 typedef int64_t int_fast64_t;
675 typedef uint64_t uint_fast64_t;
676 #ifdef _WIN64
677 #define ECB_PTRSIZE 8
678 typedef uint64_t uintptr_t;
679 typedef int64_t intptr_t;
680 #else
681 #define ECB_PTRSIZE 4
682 typedef uint32_t uintptr_t;
683 typedef int32_t intptr_t;
684 #endif
371#else 685#else
372# define expect(expr,value) (expr) 686 #include <inttypes.h>
373# define noinline 687 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
374# if __STDC_VERSION__ < 199901L && __GNUC__ < 2 688 #define ECB_PTRSIZE 8
375# define inline 689 #else
690 #define ECB_PTRSIZE 4
691 #endif
376# endif 692#endif
693
694#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
695#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
696
697#ifndef ECB_OPTIMIZE_SIZE
698 #if __OPTIMIZE_SIZE__
699 #define ECB_OPTIMIZE_SIZE 1
700 #else
701 #define ECB_OPTIMIZE_SIZE 0
377#endif 702 #endif
703#endif
378 704
379#define expect_false(expr) expect ((expr) != 0, 0) 705/* work around x32 idiocy by defining proper macros */
380#define expect_true(expr) expect ((expr) != 0, 1) 706#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
381#define inline_size static inline 707 #if _ILP32
708 #define ECB_AMD64_X32 1
709 #else
710 #define ECB_AMD64 1
711 #endif
712#endif
382 713
383#if EV_MINIMAL 714/* many compilers define _GNUC_ to some versions but then only implement
384# define inline_speed static noinline 715 * what their idiot authors think are the "more important" extensions,
716 * causing enormous grief in return for some better fake benchmark numbers.
717 * or so.
718 * we try to detect these and simply assume they are not gcc - if they have
719 * an issue with that they should have done it right in the first place.
720 */
721#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
722 #define ECB_GCC_VERSION(major,minor) 0
385#else 723#else
724 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
725#endif
726
727#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
728
729#if __clang__ && defined __has_builtin
730 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
731#else
732 #define ECB_CLANG_BUILTIN(x) 0
733#endif
734
735#if __clang__ && defined __has_extension
736 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
737#else
738 #define ECB_CLANG_EXTENSION(x) 0
739#endif
740
741#define ECB_CPP (__cplusplus+0)
742#define ECB_CPP11 (__cplusplus >= 201103L)
743#define ECB_CPP14 (__cplusplus >= 201402L)
744#define ECB_CPP17 (__cplusplus >= 201703L)
745
746#if ECB_CPP
747 #define ECB_C 0
748 #define ECB_STDC_VERSION 0
749#else
750 #define ECB_C 1
751 #define ECB_STDC_VERSION __STDC_VERSION__
752#endif
753
754#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
755#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
756#define ECB_C17 (ECB_STDC_VERSION >= 201710L)
757
758#if ECB_CPP
759 #define ECB_EXTERN_C extern "C"
760 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
761 #define ECB_EXTERN_C_END }
762#else
763 #define ECB_EXTERN_C extern
764 #define ECB_EXTERN_C_BEG
765 #define ECB_EXTERN_C_END
766#endif
767
768/*****************************************************************************/
769
770/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
771/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
772
773#if ECB_NO_THREADS
774 #define ECB_NO_SMP 1
775#endif
776
777#if ECB_NO_SMP
778 #define ECB_MEMORY_FENCE do { } while (0)
779#endif
780
781/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
782#if __xlC__ && ECB_CPP
783 #include <builtins.h>
784#endif
785
786#if 1400 <= _MSC_VER
787 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
788#endif
789
790#ifndef ECB_MEMORY_FENCE
791 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
792 #define ECB_MEMORY_FENCE_RELAXED __asm__ __volatile__ ("" : : : "memory")
793 #if __i386 || __i386__
794 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
795 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
796 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
797 #elif ECB_GCC_AMD64
798 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
799 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
800 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
801 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
802 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
803 #elif defined __ARM_ARCH_2__ \
804 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
805 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
806 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
807 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
808 || defined __ARM_ARCH_5TEJ__
809 /* should not need any, unless running old code on newer cpu - arm doesn't support that */
810 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
811 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
812 || defined __ARM_ARCH_6T2__
813 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
814 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
815 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
816 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
817 #elif __aarch64__
818 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
819 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
820 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
821 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
822 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
823 #elif defined __s390__ || defined __s390x__
824 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
825 #elif defined __mips__
826 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
827 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
828 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
829 #elif defined __alpha__
830 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
831 #elif defined __hppa__
832 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
833 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
834 #elif defined __ia64__
835 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
836 #elif defined __m68k__
837 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
838 #elif defined __m88k__
839 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
840 #elif defined __sh__
841 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
842 #endif
843 #endif
844#endif
845
846#ifndef ECB_MEMORY_FENCE
847 #if ECB_GCC_VERSION(4,7)
848 /* see comment below (stdatomic.h) about the C11 memory model. */
849 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
850 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
851 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
852 #define ECB_MEMORY_FENCE_RELAXED __atomic_thread_fence (__ATOMIC_RELAXED)
853
854 #elif ECB_CLANG_EXTENSION(c_atomic)
855 /* see comment below (stdatomic.h) about the C11 memory model. */
856 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
857 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
858 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
859 #define ECB_MEMORY_FENCE_RELAXED __c11_atomic_thread_fence (__ATOMIC_RELAXED)
860
861 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
862 #define ECB_MEMORY_FENCE __sync_synchronize ()
863 #elif _MSC_VER >= 1500 /* VC++ 2008 */
864 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
865 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
866 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
867 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
868 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
869 #elif _MSC_VER >= 1400 /* VC++ 2005 */
870 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
871 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
872 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
873 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
874 #elif defined _WIN32
875 #include <WinNT.h>
876 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
877 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
878 #include <mbarrier.h>
879 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
880 #define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier ()
881 #define ECB_MEMORY_FENCE_RELEASE __machine_rel_barrier ()
882 #define ECB_MEMORY_FENCE_RELAXED __compiler_barrier ()
883 #elif __xlC__
884 #define ECB_MEMORY_FENCE __sync ()
885 #endif
886#endif
887
888#ifndef ECB_MEMORY_FENCE
889 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
890 /* we assume that these memory fences work on all variables/all memory accesses, */
891 /* not just C11 atomics and atomic accesses */
892 #include <stdatomic.h>
893 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
894 #define ECB_MEMORY_FENCE_ACQUIRE atomic_thread_fence (memory_order_acquire)
895 #define ECB_MEMORY_FENCE_RELEASE atomic_thread_fence (memory_order_release)
896 #endif
897#endif
898
899#ifndef ECB_MEMORY_FENCE
900 #if !ECB_AVOID_PTHREADS
901 /*
902 * if you get undefined symbol references to pthread_mutex_lock,
903 * or failure to find pthread.h, then you should implement
904 * the ECB_MEMORY_FENCE operations for your cpu/compiler
905 * OR provide pthread.h and link against the posix thread library
906 * of your system.
907 */
908 #include <pthread.h>
909 #define ECB_NEEDS_PTHREADS 1
910 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
911
912 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
913 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
914 #endif
915#endif
916
917#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
918 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
919#endif
920
921#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
922 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
923#endif
924
925#if !defined ECB_MEMORY_FENCE_RELAXED && defined ECB_MEMORY_FENCE
926 #define ECB_MEMORY_FENCE_RELAXED ECB_MEMORY_FENCE /* very heavy-handed */
927#endif
928
929/*****************************************************************************/
930
931#if ECB_CPP
932 #define ecb_inline static inline
933#elif ECB_GCC_VERSION(2,5)
934 #define ecb_inline static __inline__
935#elif ECB_C99
936 #define ecb_inline static inline
937#else
938 #define ecb_inline static
939#endif
940
941#if ECB_GCC_VERSION(3,3)
942 #define ecb_restrict __restrict__
943#elif ECB_C99
944 #define ecb_restrict restrict
945#else
946 #define ecb_restrict
947#endif
948
949typedef int ecb_bool;
950
951#define ECB_CONCAT_(a, b) a ## b
952#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
953#define ECB_STRINGIFY_(a) # a
954#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
955#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
956
957#define ecb_function_ ecb_inline
958
959#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
960 #define ecb_attribute(attrlist) __attribute__ (attrlist)
961#else
962 #define ecb_attribute(attrlist)
963#endif
964
965#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
966 #define ecb_is_constant(expr) __builtin_constant_p (expr)
967#else
968 /* possible C11 impl for integral types
969 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
970 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
971
972 #define ecb_is_constant(expr) 0
973#endif
974
975#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
976 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
977#else
978 #define ecb_expect(expr,value) (expr)
979#endif
980
981#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
982 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
983#else
984 #define ecb_prefetch(addr,rw,locality)
985#endif
986
987/* no emulation for ecb_decltype */
988#if ECB_CPP11
989 // older implementations might have problems with decltype(x)::type, work around it
990 template<class T> struct ecb_decltype_t { typedef T type; };
991 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
992#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
993 #define ecb_decltype(x) __typeof__ (x)
994#endif
995
996#if _MSC_VER >= 1300
997 #define ecb_deprecated __declspec (deprecated)
998#else
999 #define ecb_deprecated ecb_attribute ((__deprecated__))
1000#endif
1001
1002#if _MSC_VER >= 1500
1003 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
1004#elif ECB_GCC_VERSION(4,5)
1005 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
1006#else
1007 #define ecb_deprecated_message(msg) ecb_deprecated
1008#endif
1009
1010#if _MSC_VER >= 1400
1011 #define ecb_noinline __declspec (noinline)
1012#else
1013 #define ecb_noinline ecb_attribute ((__noinline__))
1014#endif
1015
1016#define ecb_unused ecb_attribute ((__unused__))
1017#define ecb_const ecb_attribute ((__const__))
1018#define ecb_pure ecb_attribute ((__pure__))
1019
1020#if ECB_C11 || __IBMC_NORETURN
1021 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
1022 #define ecb_noreturn _Noreturn
1023#elif ECB_CPP11
1024 #define ecb_noreturn [[noreturn]]
1025#elif _MSC_VER >= 1200
1026 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
1027 #define ecb_noreturn __declspec (noreturn)
1028#else
1029 #define ecb_noreturn ecb_attribute ((__noreturn__))
1030#endif
1031
1032#if ECB_GCC_VERSION(4,3)
1033 #define ecb_artificial ecb_attribute ((__artificial__))
1034 #define ecb_hot ecb_attribute ((__hot__))
1035 #define ecb_cold ecb_attribute ((__cold__))
1036#else
1037 #define ecb_artificial
1038 #define ecb_hot
1039 #define ecb_cold
1040#endif
1041
1042/* put around conditional expressions if you are very sure that the */
1043/* expression is mostly true or mostly false. note that these return */
1044/* booleans, not the expression. */
1045#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
1046#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
1047/* for compatibility to the rest of the world */
1048#define ecb_likely(expr) ecb_expect_true (expr)
1049#define ecb_unlikely(expr) ecb_expect_false (expr)
1050
1051/* count trailing zero bits and count # of one bits */
1052#if ECB_GCC_VERSION(3,4) \
1053 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
1054 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
1055 && ECB_CLANG_BUILTIN(__builtin_popcount))
1056 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
1057 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
1058 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
1059 #define ecb_ctz32(x) __builtin_ctz (x)
1060 #define ecb_ctz64(x) __builtin_ctzll (x)
1061 #define ecb_popcount32(x) __builtin_popcount (x)
1062 /* no popcountll */
1063#else
1064 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
1065 ecb_function_ ecb_const int
1066 ecb_ctz32 (uint32_t x)
1067 {
1068#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1069 unsigned long r;
1070 _BitScanForward (&r, x);
1071 return (int)r;
1072#else
1073 int r = 0;
1074
1075 x &= ~x + 1; /* this isolates the lowest bit */
1076
1077#if ECB_branchless_on_i386
1078 r += !!(x & 0xaaaaaaaa) << 0;
1079 r += !!(x & 0xcccccccc) << 1;
1080 r += !!(x & 0xf0f0f0f0) << 2;
1081 r += !!(x & 0xff00ff00) << 3;
1082 r += !!(x & 0xffff0000) << 4;
1083#else
1084 if (x & 0xaaaaaaaa) r += 1;
1085 if (x & 0xcccccccc) r += 2;
1086 if (x & 0xf0f0f0f0) r += 4;
1087 if (x & 0xff00ff00) r += 8;
1088 if (x & 0xffff0000) r += 16;
1089#endif
1090
1091 return r;
1092#endif
1093 }
1094
1095 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
1096 ecb_function_ ecb_const int
1097 ecb_ctz64 (uint64_t x)
1098 {
1099#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1100 unsigned long r;
1101 _BitScanForward64 (&r, x);
1102 return (int)r;
1103#else
1104 int shift = x & 0xffffffff ? 0 : 32;
1105 return ecb_ctz32 (x >> shift) + shift;
1106#endif
1107 }
1108
1109 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
1110 ecb_function_ ecb_const int
1111 ecb_popcount32 (uint32_t x)
1112 {
1113 x -= (x >> 1) & 0x55555555;
1114 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
1115 x = ((x >> 4) + x) & 0x0f0f0f0f;
1116 x *= 0x01010101;
1117
1118 return x >> 24;
1119 }
1120
1121 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
1122 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
1123 {
1124#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1125 unsigned long r;
1126 _BitScanReverse (&r, x);
1127 return (int)r;
1128#else
1129 int r = 0;
1130
1131 if (x >> 16) { x >>= 16; r += 16; }
1132 if (x >> 8) { x >>= 8; r += 8; }
1133 if (x >> 4) { x >>= 4; r += 4; }
1134 if (x >> 2) { x >>= 2; r += 2; }
1135 if (x >> 1) { r += 1; }
1136
1137 return r;
1138#endif
1139 }
1140
1141 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
1142 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
1143 {
1144#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1145 unsigned long r;
1146 _BitScanReverse64 (&r, x);
1147 return (int)r;
1148#else
1149 int r = 0;
1150
1151 if (x >> 32) { x >>= 32; r += 32; }
1152
1153 return r + ecb_ld32 (x);
1154#endif
1155 }
1156#endif
1157
1158ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
1159ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
1160ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
1161ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
1162
1163ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
1164ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
1165{
1166 return ( (x * 0x0802U & 0x22110U)
1167 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
1168}
1169
1170ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
1171ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
1172{
1173 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
1174 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
1175 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
1176 x = ( x >> 8 ) | ( x << 8);
1177
1178 return x;
1179}
1180
1181ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
1182ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
1183{
1184 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
1185 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
1186 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
1187 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
1188 x = ( x >> 16 ) | ( x << 16);
1189
1190 return x;
1191}
1192
1193/* popcount64 is only available on 64 bit cpus as gcc builtin */
1194/* so for this version we are lazy */
1195ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
1196ecb_function_ ecb_const int
1197ecb_popcount64 (uint64_t x)
1198{
1199 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
1200}
1201
1202ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
1203ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
1204ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
1205ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
1206ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
1207ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
1208ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
1209ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
1210
1211ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
1212ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
1213ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
1214ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
1215ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
1216ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
1217ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
1218ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
1219
1220#if ECB_CPP
1221
1222inline uint8_t ecb_ctz (uint8_t v) { return ecb_ctz32 (v); }
1223inline uint16_t ecb_ctz (uint16_t v) { return ecb_ctz32 (v); }
1224inline uint32_t ecb_ctz (uint32_t v) { return ecb_ctz32 (v); }
1225inline uint64_t ecb_ctz (uint64_t v) { return ecb_ctz64 (v); }
1226
1227inline bool ecb_is_pot (uint8_t v) { return ecb_is_pot32 (v); }
1228inline bool ecb_is_pot (uint16_t v) { return ecb_is_pot32 (v); }
1229inline bool ecb_is_pot (uint32_t v) { return ecb_is_pot32 (v); }
1230inline bool ecb_is_pot (uint64_t v) { return ecb_is_pot64 (v); }
1231
1232inline int ecb_ld (uint8_t v) { return ecb_ld32 (v); }
1233inline int ecb_ld (uint16_t v) { return ecb_ld32 (v); }
1234inline int ecb_ld (uint32_t v) { return ecb_ld32 (v); }
1235inline int ecb_ld (uint64_t v) { return ecb_ld64 (v); }
1236
1237inline int ecb_popcount (uint8_t v) { return ecb_popcount32 (v); }
1238inline int ecb_popcount (uint16_t v) { return ecb_popcount32 (v); }
1239inline int ecb_popcount (uint32_t v) { return ecb_popcount32 (v); }
1240inline int ecb_popcount (uint64_t v) { return ecb_popcount64 (v); }
1241
1242inline uint8_t ecb_bitrev (uint8_t v) { return ecb_bitrev8 (v); }
1243inline uint16_t ecb_bitrev (uint16_t v) { return ecb_bitrev16 (v); }
1244inline uint32_t ecb_bitrev (uint32_t v) { return ecb_bitrev32 (v); }
1245
1246inline uint8_t ecb_rotl (uint8_t v, unsigned int count) { return ecb_rotl8 (v, count); }
1247inline uint16_t ecb_rotl (uint16_t v, unsigned int count) { return ecb_rotl16 (v, count); }
1248inline uint32_t ecb_rotl (uint32_t v, unsigned int count) { return ecb_rotl32 (v, count); }
1249inline uint64_t ecb_rotl (uint64_t v, unsigned int count) { return ecb_rotl64 (v, count); }
1250
1251inline uint8_t ecb_rotr (uint8_t v, unsigned int count) { return ecb_rotr8 (v, count); }
1252inline uint16_t ecb_rotr (uint16_t v, unsigned int count) { return ecb_rotr16 (v, count); }
1253inline uint32_t ecb_rotr (uint32_t v, unsigned int count) { return ecb_rotr32 (v, count); }
1254inline uint64_t ecb_rotr (uint64_t v, unsigned int count) { return ecb_rotr64 (v, count); }
1255
1256#endif
1257
1258#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1259 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1260 #define ecb_bswap16(x) __builtin_bswap16 (x)
1261 #else
1262 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1263 #endif
1264 #define ecb_bswap32(x) __builtin_bswap32 (x)
1265 #define ecb_bswap64(x) __builtin_bswap64 (x)
1266#elif _MSC_VER
1267 #include <stdlib.h>
1268 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1269 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1270 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
1271#else
1272 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
1273 ecb_function_ ecb_const uint16_t
1274 ecb_bswap16 (uint16_t x)
1275 {
1276 return ecb_rotl16 (x, 8);
1277 }
1278
1279 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
1280 ecb_function_ ecb_const uint32_t
1281 ecb_bswap32 (uint32_t x)
1282 {
1283 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
1284 }
1285
1286 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
1287 ecb_function_ ecb_const uint64_t
1288 ecb_bswap64 (uint64_t x)
1289 {
1290 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
1291 }
1292#endif
1293
1294#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
1295 #define ecb_unreachable() __builtin_unreachable ()
1296#else
1297 /* this seems to work fine, but gcc always emits a warning for it :/ */
1298 ecb_inline ecb_noreturn void ecb_unreachable (void);
1299 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
1300#endif
1301
1302/* try to tell the compiler that some condition is definitely true */
1303#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
1304
1305ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
1306ecb_inline ecb_const uint32_t
1307ecb_byteorder_helper (void)
1308{
1309 /* the union code still generates code under pressure in gcc, */
1310 /* but less than using pointers, and always seems to */
1311 /* successfully return a constant. */
1312 /* the reason why we have this horrible preprocessor mess */
1313 /* is to avoid it in all cases, at least on common architectures */
1314 /* or when using a recent enough gcc version (>= 4.6) */
1315#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1316 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1317 #define ECB_LITTLE_ENDIAN 1
1318 return 0x44332211;
1319#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1320 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1321 #define ECB_BIG_ENDIAN 1
1322 return 0x11223344;
1323#else
1324 union
1325 {
1326 uint8_t c[4];
1327 uint32_t u;
1328 } u = { 0x11, 0x22, 0x33, 0x44 };
1329 return u.u;
1330#endif
1331}
1332
1333ecb_inline ecb_const ecb_bool ecb_big_endian (void);
1334ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
1335ecb_inline ecb_const ecb_bool ecb_little_endian (void);
1336ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
1337
1338/*****************************************************************************/
1339/* unaligned load/store */
1340
1341ecb_inline uint_fast16_t ecb_be_u16_to_host (uint_fast16_t v) { return ecb_little_endian () ? ecb_bswap16 (v) : v; }
1342ecb_inline uint_fast32_t ecb_be_u32_to_host (uint_fast32_t v) { return ecb_little_endian () ? ecb_bswap32 (v) : v; }
1343ecb_inline uint_fast64_t ecb_be_u64_to_host (uint_fast64_t v) { return ecb_little_endian () ? ecb_bswap64 (v) : v; }
1344
1345ecb_inline uint_fast16_t ecb_le_u16_to_host (uint_fast16_t v) { return ecb_big_endian () ? ecb_bswap16 (v) : v; }
1346ecb_inline uint_fast32_t ecb_le_u32_to_host (uint_fast32_t v) { return ecb_big_endian () ? ecb_bswap32 (v) : v; }
1347ecb_inline uint_fast64_t ecb_le_u64_to_host (uint_fast64_t v) { return ecb_big_endian () ? ecb_bswap64 (v) : v; }
1348
1349ecb_inline uint_fast16_t ecb_peek_u16_u (const void *ptr) { uint16_t v; memcpy (&v, ptr, sizeof (v)); return v; }
1350ecb_inline uint_fast32_t ecb_peek_u32_u (const void *ptr) { uint32_t v; memcpy (&v, ptr, sizeof (v)); return v; }
1351ecb_inline uint_fast64_t ecb_peek_u64_u (const void *ptr) { uint64_t v; memcpy (&v, ptr, sizeof (v)); return v; }
1352
1353ecb_inline uint_fast16_t ecb_peek_be_u16_u (const void *ptr) { return ecb_be_u16_to_host (ecb_peek_u16_u (ptr)); }
1354ecb_inline uint_fast32_t ecb_peek_be_u32_u (const void *ptr) { return ecb_be_u32_to_host (ecb_peek_u32_u (ptr)); }
1355ecb_inline uint_fast64_t ecb_peek_be_u64_u (const void *ptr) { return ecb_be_u64_to_host (ecb_peek_u64_u (ptr)); }
1356
1357ecb_inline uint_fast16_t ecb_peek_le_u16_u (const void *ptr) { return ecb_le_u16_to_host (ecb_peek_u16_u (ptr)); }
1358ecb_inline uint_fast32_t ecb_peek_le_u32_u (const void *ptr) { return ecb_le_u32_to_host (ecb_peek_u32_u (ptr)); }
1359ecb_inline uint_fast64_t ecb_peek_le_u64_u (const void *ptr) { return ecb_le_u64_to_host (ecb_peek_u64_u (ptr)); }
1360
1361ecb_inline uint_fast16_t ecb_host_to_be_u16 (uint_fast16_t v) { return ecb_little_endian () ? ecb_bswap16 (v) : v; }
1362ecb_inline uint_fast32_t ecb_host_to_be_u32 (uint_fast32_t v) { return ecb_little_endian () ? ecb_bswap32 (v) : v; }
1363ecb_inline uint_fast64_t ecb_host_to_be_u64 (uint_fast64_t v) { return ecb_little_endian () ? ecb_bswap64 (v) : v; }
1364
1365ecb_inline uint_fast16_t ecb_host_to_le_u16 (uint_fast16_t v) { return ecb_big_endian () ? ecb_bswap16 (v) : v; }
1366ecb_inline uint_fast32_t ecb_host_to_le_u32 (uint_fast32_t v) { return ecb_big_endian () ? ecb_bswap32 (v) : v; }
1367ecb_inline uint_fast64_t ecb_host_to_le_u64 (uint_fast64_t v) { return ecb_big_endian () ? ecb_bswap64 (v) : v; }
1368
1369ecb_inline void ecb_poke_u16_u (void *ptr, uint16_t v) { memcpy (ptr, &v, sizeof (v)); }
1370ecb_inline void ecb_poke_u32_u (void *ptr, uint32_t v) { memcpy (ptr, &v, sizeof (v)); }
1371ecb_inline void ecb_poke_u64_u (void *ptr, uint64_t v) { memcpy (ptr, &v, sizeof (v)); }
1372
1373ecb_inline void ecb_poke_be_u16_u (void *ptr, uint_fast16_t v) { ecb_poke_u16_u (ptr, ecb_host_to_be_u16 (v)); }
1374ecb_inline void ecb_poke_be_u32_u (void *ptr, uint_fast32_t v) { ecb_poke_u32_u (ptr, ecb_host_to_be_u32 (v)); }
1375ecb_inline void ecb_poke_be_u64_u (void *ptr, uint_fast64_t v) { ecb_poke_u64_u (ptr, ecb_host_to_be_u64 (v)); }
1376
1377ecb_inline void ecb_poke_le_u16_u (void *ptr, uint_fast16_t v) { ecb_poke_u16_u (ptr, ecb_host_to_le_u16 (v)); }
1378ecb_inline void ecb_poke_le_u32_u (void *ptr, uint_fast32_t v) { ecb_poke_u32_u (ptr, ecb_host_to_le_u32 (v)); }
1379ecb_inline void ecb_poke_le_u64_u (void *ptr, uint_fast64_t v) { ecb_poke_u64_u (ptr, ecb_host_to_le_u64 (v)); }
1380
1381#if ECB_CPP
1382
1383inline uint8_t ecb_bswap (uint8_t v) { return v; }
1384inline uint16_t ecb_bswap (uint16_t v) { return ecb_bswap16 (v); }
1385inline uint32_t ecb_bswap (uint32_t v) { return ecb_bswap32 (v); }
1386inline uint64_t ecb_bswap (uint64_t v) { return ecb_bswap64 (v); }
1387
1388template<typename T> inline T ecb_be_to_host (T v) { return ecb_little_endian () ? ecb_bswap (v) : v; }
1389template<typename T> inline T ecb_le_to_host (T v) { return ecb_big_endian () ? ecb_bswap (v) : v; }
1390template<typename T> inline T ecb_peek (const void *ptr) { return *(const T *)ptr; }
1391template<typename T> inline T ecb_peek_be (const void *ptr) { return ecb_be_to_host (ecb_peek <T> (ptr)); }
1392template<typename T> inline T ecb_peek_le (const void *ptr) { return ecb_le_to_host (ecb_peek <T> (ptr)); }
1393template<typename T> inline T ecb_peek_u (const void *ptr) { T v; memcpy (&v, ptr, sizeof (v)); return v; }
1394template<typename T> inline T ecb_peek_be_u (const void *ptr) { return ecb_be_to_host (ecb_peek_u<T> (ptr)); }
1395template<typename T> inline T ecb_peek_le_u (const void *ptr) { return ecb_le_to_host (ecb_peek_u<T> (ptr)); }
1396
1397template<typename T> inline T ecb_host_to_be (T v) { return ecb_little_endian () ? ecb_bswap (v) : v; }
1398template<typename T> inline T ecb_host_to_le (T v) { return ecb_big_endian () ? ecb_bswap (v) : v; }
1399template<typename T> inline void ecb_poke (void *ptr, T v) { *(T *)ptr = v; }
1400template<typename T> inline void ecb_poke_be (void *ptr, T v) { return ecb_poke <T> (ptr, ecb_host_to_be (v)); }
1401template<typename T> inline void ecb_poke_le (void *ptr, T v) { return ecb_poke <T> (ptr, ecb_host_to_le (v)); }
1402template<typename T> inline void ecb_poke_u (void *ptr, T v) { memcpy (ptr, &v, sizeof (v)); }
1403template<typename T> inline void ecb_poke_be_u (void *ptr, T v) { return ecb_poke_u<T> (ptr, ecb_host_to_be (v)); }
1404template<typename T> inline void ecb_poke_le_u (void *ptr, T v) { return ecb_poke_u<T> (ptr, ecb_host_to_le (v)); }
1405
1406#endif
1407
1408/*****************************************************************************/
1409
1410#if ECB_GCC_VERSION(3,0) || ECB_C99
1411 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1412#else
1413 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1414#endif
1415
1416#if ECB_CPP
1417 template<typename T>
1418 static inline T ecb_div_rd (T val, T div)
1419 {
1420 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1421 }
1422 template<typename T>
1423 static inline T ecb_div_ru (T val, T div)
1424 {
1425 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1426 }
1427#else
1428 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1429 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1430#endif
1431
1432#if ecb_cplusplus_does_not_suck
1433 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1434 template<typename T, int N>
1435 static inline int ecb_array_length (const T (&arr)[N])
1436 {
1437 return N;
1438 }
1439#else
1440 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1441#endif
1442
1443/*****************************************************************************/
1444
1445ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1446ecb_function_ ecb_const uint32_t
1447ecb_binary16_to_binary32 (uint32_t x)
1448{
1449 unsigned int s = (x & 0x8000) << (31 - 15);
1450 int e = (x >> 10) & 0x001f;
1451 unsigned int m = x & 0x03ff;
1452
1453 if (ecb_expect_false (e == 31))
1454 /* infinity or NaN */
1455 e = 255 - (127 - 15);
1456 else if (ecb_expect_false (!e))
1457 {
1458 if (ecb_expect_true (!m))
1459 /* zero, handled by code below by forcing e to 0 */
1460 e = 0 - (127 - 15);
1461 else
1462 {
1463 /* subnormal, renormalise */
1464 unsigned int s = 10 - ecb_ld32 (m);
1465
1466 m = (m << s) & 0x3ff; /* mask implicit bit */
1467 e -= s - 1;
1468 }
1469 }
1470
1471 /* e and m now are normalised, or zero, (or inf or nan) */
1472 e += 127 - 15;
1473
1474 return s | (e << 23) | (m << (23 - 10));
1475}
1476
1477ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1478ecb_function_ ecb_const uint16_t
1479ecb_binary32_to_binary16 (uint32_t x)
1480{
1481 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1482 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1483 unsigned int m = x & 0x007fffff;
1484
1485 x &= 0x7fffffff;
1486
1487 /* if it's within range of binary16 normals, use fast path */
1488 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1489 {
1490 /* mantissa round-to-even */
1491 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1492
1493 /* handle overflow */
1494 if (ecb_expect_false (m >= 0x00800000))
1495 {
1496 m >>= 1;
1497 e += 1;
1498 }
1499
1500 return s | (e << 10) | (m >> (23 - 10));
1501 }
1502
1503 /* handle large numbers and infinity */
1504 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1505 return s | 0x7c00;
1506
1507 /* handle zero, subnormals and small numbers */
1508 if (ecb_expect_true (x < 0x38800000))
1509 {
1510 /* zero */
1511 if (ecb_expect_true (!x))
1512 return s;
1513
1514 /* handle subnormals */
1515
1516 /* too small, will be zero */
1517 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1518 return s;
1519
1520 m |= 0x00800000; /* make implicit bit explicit */
1521
1522 /* very tricky - we need to round to the nearest e (+10) bit value */
1523 {
1524 unsigned int bits = 14 - e;
1525 unsigned int half = (1 << (bits - 1)) - 1;
1526 unsigned int even = (m >> bits) & 1;
1527
1528 /* if this overflows, we will end up with a normalised number */
1529 m = (m + half + even) >> bits;
1530 }
1531
1532 return s | m;
1533 }
1534
1535 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1536 m >>= 13;
1537
1538 return s | 0x7c00 | m | !m;
1539}
1540
1541/*******************************************************************************/
1542/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1543
1544/* basically, everything uses "ieee pure-endian" floating point numbers */
1545/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1546#if 0 \
1547 || __i386 || __i386__ \
1548 || ECB_GCC_AMD64 \
1549 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1550 || defined __s390__ || defined __s390x__ \
1551 || defined __mips__ \
1552 || defined __alpha__ \
1553 || defined __hppa__ \
1554 || defined __ia64__ \
1555 || defined __m68k__ \
1556 || defined __m88k__ \
1557 || defined __sh__ \
1558 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1559 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1560 || defined __aarch64__
1561 #define ECB_STDFP 1
1562#else
1563 #define ECB_STDFP 0
1564#endif
1565
1566#ifndef ECB_NO_LIBM
1567
1568 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1569
1570 /* only the oldest of old doesn't have this one. solaris. */
1571 #ifdef INFINITY
1572 #define ECB_INFINITY INFINITY
1573 #else
1574 #define ECB_INFINITY HUGE_VAL
1575 #endif
1576
1577 #ifdef NAN
1578 #define ECB_NAN NAN
1579 #else
1580 #define ECB_NAN ECB_INFINITY
1581 #endif
1582
1583 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1584 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1585 #define ecb_frexpf(x,e) frexpf ((x), (e))
1586 #else
1587 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1588 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1589 #endif
1590
1591 /* convert a float to ieee single/binary32 */
1592 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1593 ecb_function_ ecb_const uint32_t
1594 ecb_float_to_binary32 (float x)
1595 {
1596 uint32_t r;
1597
1598 #if ECB_STDFP
1599 memcpy (&r, &x, 4);
1600 #else
1601 /* slow emulation, works for anything but -0 */
1602 uint32_t m;
1603 int e;
1604
1605 if (x == 0e0f ) return 0x00000000U;
1606 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1607 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1608 if (x != x ) return 0x7fbfffffU;
1609
1610 m = ecb_frexpf (x, &e) * 0x1000000U;
1611
1612 r = m & 0x80000000U;
1613
1614 if (r)
1615 m = -m;
1616
1617 if (e <= -126)
1618 {
1619 m &= 0xffffffU;
1620 m >>= (-125 - e);
1621 e = -126;
1622 }
1623
1624 r |= (e + 126) << 23;
1625 r |= m & 0x7fffffU;
1626 #endif
1627
1628 return r;
1629 }
1630
1631 /* converts an ieee single/binary32 to a float */
1632 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1633 ecb_function_ ecb_const float
1634 ecb_binary32_to_float (uint32_t x)
1635 {
1636 float r;
1637
1638 #if ECB_STDFP
1639 memcpy (&r, &x, 4);
1640 #else
1641 /* emulation, only works for normals and subnormals and +0 */
1642 int neg = x >> 31;
1643 int e = (x >> 23) & 0xffU;
1644
1645 x &= 0x7fffffU;
1646
1647 if (e)
1648 x |= 0x800000U;
1649 else
1650 e = 1;
1651
1652 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1653 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1654
1655 r = neg ? -r : r;
1656 #endif
1657
1658 return r;
1659 }
1660
1661 /* convert a double to ieee double/binary64 */
1662 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1663 ecb_function_ ecb_const uint64_t
1664 ecb_double_to_binary64 (double x)
1665 {
1666 uint64_t r;
1667
1668 #if ECB_STDFP
1669 memcpy (&r, &x, 8);
1670 #else
1671 /* slow emulation, works for anything but -0 */
1672 uint64_t m;
1673 int e;
1674
1675 if (x == 0e0 ) return 0x0000000000000000U;
1676 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1677 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1678 if (x != x ) return 0X7ff7ffffffffffffU;
1679
1680 m = frexp (x, &e) * 0x20000000000000U;
1681
1682 r = m & 0x8000000000000000;;
1683
1684 if (r)
1685 m = -m;
1686
1687 if (e <= -1022)
1688 {
1689 m &= 0x1fffffffffffffU;
1690 m >>= (-1021 - e);
1691 e = -1022;
1692 }
1693
1694 r |= ((uint64_t)(e + 1022)) << 52;
1695 r |= m & 0xfffffffffffffU;
1696 #endif
1697
1698 return r;
1699 }
1700
1701 /* converts an ieee double/binary64 to a double */
1702 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1703 ecb_function_ ecb_const double
1704 ecb_binary64_to_double (uint64_t x)
1705 {
1706 double r;
1707
1708 #if ECB_STDFP
1709 memcpy (&r, &x, 8);
1710 #else
1711 /* emulation, only works for normals and subnormals and +0 */
1712 int neg = x >> 63;
1713 int e = (x >> 52) & 0x7ffU;
1714
1715 x &= 0xfffffffffffffU;
1716
1717 if (e)
1718 x |= 0x10000000000000U;
1719 else
1720 e = 1;
1721
1722 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1723 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1724
1725 r = neg ? -r : r;
1726 #endif
1727
1728 return r;
1729 }
1730
1731 /* convert a float to ieee half/binary16 */
1732 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1733 ecb_function_ ecb_const uint16_t
1734 ecb_float_to_binary16 (float x)
1735 {
1736 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1737 }
1738
1739 /* convert an ieee half/binary16 to float */
1740 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1741 ecb_function_ ecb_const float
1742 ecb_binary16_to_float (uint16_t x)
1743 {
1744 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1745 }
1746
1747#endif
1748
1749#endif
1750
1751/* ECB.H END */
1752
1753#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1754/* if your architecture doesn't need memory fences, e.g. because it is
1755 * single-cpu/core, or if you use libev in a project that doesn't use libev
1756 * from multiple threads, then you can define ECB_NO_THREADS when compiling
1757 * libev, in which cases the memory fences become nops.
1758 * alternatively, you can remove this #error and link against libpthread,
1759 * which will then provide the memory fences.
1760 */
1761# error "memory fences not defined for your architecture, please report"
1762#endif
1763
1764#ifndef ECB_MEMORY_FENCE
1765# define ECB_MEMORY_FENCE do { } while (0)
1766# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1767# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1768#endif
1769
1770#define inline_size ecb_inline
1771
1772#if EV_FEATURE_CODE
386# define inline_speed static inline 1773# define inline_speed ecb_inline
1774#else
1775# define inline_speed ecb_noinline static
387#endif 1776#endif
388 1777
1778/*****************************************************************************/
1779/* raw syscall wrappers */
1780
1781#if EV_NEED_SYSCALL
1782
1783#include <sys/syscall.h>
1784
1785/*
1786 * define some syscall wrappers for common architectures
1787 * this is mostly for nice looks during debugging, not performance.
1788 * our syscalls return < 0, not == -1, on error. which is good
1789 * enough for linux aio.
1790 * TODO: arm is also common nowadays, maybe even mips and x86
1791 * TODO: after implementing this, it suddenly looks like overkill, but its hard to remove...
1792 */
1793#if __GNUC__ && __linux && ECB_AMD64 && !EV_FEATURE_CODE
1794 /* the costly errno access probably kills this for size optimisation */
1795
1796 #define ev_syscall(nr,narg,arg1,arg2,arg3,arg4,arg5,arg6) \
1797 ({ \
1798 long res; \
1799 register unsigned long r6 __asm__ ("r9" ); \
1800 register unsigned long r5 __asm__ ("r8" ); \
1801 register unsigned long r4 __asm__ ("r10"); \
1802 register unsigned long r3 __asm__ ("rdx"); \
1803 register unsigned long r2 __asm__ ("rsi"); \
1804 register unsigned long r1 __asm__ ("rdi"); \
1805 if (narg >= 6) r6 = (unsigned long)(arg6); \
1806 if (narg >= 5) r5 = (unsigned long)(arg5); \
1807 if (narg >= 4) r4 = (unsigned long)(arg4); \
1808 if (narg >= 3) r3 = (unsigned long)(arg3); \
1809 if (narg >= 2) r2 = (unsigned long)(arg2); \
1810 if (narg >= 1) r1 = (unsigned long)(arg1); \
1811 __asm__ __volatile__ ( \
1812 "syscall\n\t" \
1813 : "=a" (res) \
1814 : "0" (nr), "r" (r1), "r" (r2), "r" (r3), "r" (r4), "r" (r5) \
1815 : "cc", "r11", "cx", "memory"); \
1816 errno = -res; \
1817 res; \
1818 })
1819
1820#endif
1821
1822#ifdef ev_syscall
1823 #define ev_syscall0(nr) ev_syscall (nr, 0, 0, 0, 0, 0, 0, 0)
1824 #define ev_syscall1(nr,arg1) ev_syscall (nr, 1, arg1, 0, 0, 0, 0, 0)
1825 #define ev_syscall2(nr,arg1,arg2) ev_syscall (nr, 2, arg1, arg2, 0, 0, 0, 0)
1826 #define ev_syscall3(nr,arg1,arg2,arg3) ev_syscall (nr, 3, arg1, arg2, arg3, 0, 0, 0)
1827 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) ev_syscall (nr, 3, arg1, arg2, arg3, arg4, 0, 0)
1828 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) ev_syscall (nr, 5, arg1, arg2, arg3, arg4, arg5, 0)
1829 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) ev_syscall (nr, 6, arg1, arg2, arg3, arg4, arg5,arg6)
1830#else
1831 #define ev_syscall0(nr) syscall (nr)
1832 #define ev_syscall1(nr,arg1) syscall (nr, arg1)
1833 #define ev_syscall2(nr,arg1,arg2) syscall (nr, arg1, arg2)
1834 #define ev_syscall3(nr,arg1,arg2,arg3) syscall (nr, arg1, arg2, arg3)
1835 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) syscall (nr, arg1, arg2, arg3, arg4)
1836 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) syscall (nr, arg1, arg2, arg3, arg4, arg5)
1837 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) syscall (nr, arg1, arg2, arg3, arg4, arg5,arg6)
1838#endif
1839
1840#endif
1841
1842/*****************************************************************************/
1843
389#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1844#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
1845
1846#if EV_MINPRI == EV_MAXPRI
1847# define ABSPRI(w) (((W)w), 0)
1848#else
390#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1849# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
1850#endif
391 1851
392#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1852#define EMPTY /* required for microsofts broken pseudo-c compiler */
393#define EMPTY2(a,b) /* used to suppress some warnings */
394 1853
395typedef ev_watcher *W; 1854typedef ev_watcher *W;
396typedef ev_watcher_list *WL; 1855typedef ev_watcher_list *WL;
397typedef ev_watcher_time *WT; 1856typedef ev_watcher_time *WT;
398 1857
399#define ev_active(w) ((W)(w))->active 1858#define ev_active(w) ((W)(w))->active
400#define ev_at(w) ((WT)(w))->at 1859#define ev_at(w) ((WT)(w))->at
401 1860
402#if EV_USE_REALTIME 1861#if EV_USE_REALTIME
403/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 1862/* sig_atomic_t is used to avoid per-thread variables or locking but still */
404/* giving it a reasonably high chance of working on typical architetcures */ 1863/* giving it a reasonably high chance of working on typical architectures */
405static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 1864static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
406#endif 1865#endif
407 1866
408#if EV_USE_MONOTONIC 1867#if EV_USE_MONOTONIC
409static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 1868static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
410#endif 1869#endif
411 1870
1871#ifndef EV_FD_TO_WIN32_HANDLE
1872# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
1873#endif
1874#ifndef EV_WIN32_HANDLE_TO_FD
1875# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
1876#endif
1877#ifndef EV_WIN32_CLOSE_FD
1878# define EV_WIN32_CLOSE_FD(fd) close (fd)
1879#endif
1880
412#ifdef _WIN32 1881#ifdef _WIN32
413# include "ev_win32.c" 1882# include "ev_win32.c"
414#endif 1883#endif
415 1884
416/*****************************************************************************/ 1885/*****************************************************************************/
417 1886
1887#if EV_USE_LINUXAIO
1888# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
1889#endif
1890
1891/* define a suitable floor function (only used by periodics atm) */
1892
1893#if EV_USE_FLOOR
1894# include <math.h>
1895# define ev_floor(v) floor (v)
1896#else
1897
1898#include <float.h>
1899
1900/* a floor() replacement function, should be independent of ev_tstamp type */
1901ecb_noinline
1902static ev_tstamp
1903ev_floor (ev_tstamp v)
1904{
1905 /* the choice of shift factor is not terribly important */
1906#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1907 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1908#else
1909 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1910#endif
1911
1912 /* special treatment for negative arguments */
1913 if (ecb_expect_false (v < 0.))
1914 {
1915 ev_tstamp f = -ev_floor (-v);
1916
1917 return f - (f == v ? 0 : 1);
1918 }
1919
1920 /* argument too large for an unsigned long? then reduce it */
1921 if (ecb_expect_false (v >= shift))
1922 {
1923 ev_tstamp f;
1924
1925 if (v == v - 1.)
1926 return v; /* very large numbers are assumed to be integer */
1927
1928 f = shift * ev_floor (v * (1. / shift));
1929 return f + ev_floor (v - f);
1930 }
1931
1932 /* fits into an unsigned long */
1933 return (unsigned long)v;
1934}
1935
1936#endif
1937
1938/*****************************************************************************/
1939
1940#ifdef __linux
1941# include <sys/utsname.h>
1942#endif
1943
1944ecb_noinline ecb_cold
1945static unsigned int
1946ev_linux_version (void)
1947{
1948#ifdef __linux
1949 unsigned int v = 0;
1950 struct utsname buf;
1951 int i;
1952 char *p = buf.release;
1953
1954 if (uname (&buf))
1955 return 0;
1956
1957 for (i = 3+1; --i; )
1958 {
1959 unsigned int c = 0;
1960
1961 for (;;)
1962 {
1963 if (*p >= '0' && *p <= '9')
1964 c = c * 10 + *p++ - '0';
1965 else
1966 {
1967 p += *p == '.';
1968 break;
1969 }
1970 }
1971
1972 v = (v << 8) | c;
1973 }
1974
1975 return v;
1976#else
1977 return 0;
1978#endif
1979}
1980
1981/*****************************************************************************/
1982
1983#if EV_AVOID_STDIO
1984ecb_noinline ecb_cold
1985static void
1986ev_printerr (const char *msg)
1987{
1988 write (STDERR_FILENO, msg, strlen (msg));
1989}
1990#endif
1991
418static void (*syserr_cb)(const char *msg); 1992static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
419 1993
1994ecb_cold
420void 1995void
421ev_set_syserr_cb (void (*cb)(const char *msg)) 1996ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
422{ 1997{
423 syserr_cb = cb; 1998 syserr_cb = cb;
424} 1999}
425 2000
426static void noinline 2001ecb_noinline ecb_cold
2002static void
427ev_syserr (const char *msg) 2003ev_syserr (const char *msg)
428{ 2004{
429 if (!msg) 2005 if (!msg)
430 msg = "(libev) system error"; 2006 msg = "(libev) system error";
431 2007
432 if (syserr_cb) 2008 if (syserr_cb)
433 syserr_cb (msg); 2009 syserr_cb (msg);
434 else 2010 else
435 { 2011 {
2012#if EV_AVOID_STDIO
2013 ev_printerr (msg);
2014 ev_printerr (": ");
2015 ev_printerr (strerror (errno));
2016 ev_printerr ("\n");
2017#else
436 perror (msg); 2018 perror (msg);
2019#endif
437 abort (); 2020 abort ();
438 } 2021 }
439} 2022}
440 2023
441static void * 2024static void *
442ev_realloc_emul (void *ptr, long size) 2025ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
443{ 2026{
444 /* some systems, notably openbsd and darwin, fail to properly 2027 /* some systems, notably openbsd and darwin, fail to properly
445 * implement realloc (x, 0) (as required by both ansi c-98 and 2028 * implement realloc (x, 0) (as required by both ansi c-89 and
446 * the single unix specification, so work around them here. 2029 * the single unix specification, so work around them here.
2030 * recently, also (at least) fedora and debian started breaking it,
2031 * despite documenting it otherwise.
447 */ 2032 */
448 2033
449 if (size) 2034 if (size)
450 return realloc (ptr, size); 2035 return realloc (ptr, size);
451 2036
452 free (ptr); 2037 free (ptr);
453 return 0; 2038 return 0;
454} 2039}
455 2040
456static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 2041static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
457 2042
2043ecb_cold
458void 2044void
459ev_set_allocator (void *(*cb)(void *ptr, long size)) 2045ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
460{ 2046{
461 alloc = cb; 2047 alloc = cb;
462} 2048}
463 2049
464inline_speed void * 2050inline_speed void *
… …
466{ 2052{
467 ptr = alloc (ptr, size); 2053 ptr = alloc (ptr, size);
468 2054
469 if (!ptr && size) 2055 if (!ptr && size)
470 { 2056 {
2057#if EV_AVOID_STDIO
2058 ev_printerr ("(libev) memory allocation failed, aborting.\n");
2059#else
471 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 2060 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
2061#endif
472 abort (); 2062 abort ();
473 } 2063 }
474 2064
475 return ptr; 2065 return ptr;
476} 2066}
… …
478#define ev_malloc(size) ev_realloc (0, (size)) 2068#define ev_malloc(size) ev_realloc (0, (size))
479#define ev_free(ptr) ev_realloc ((ptr), 0) 2069#define ev_free(ptr) ev_realloc ((ptr), 0)
480 2070
481/*****************************************************************************/ 2071/*****************************************************************************/
482 2072
2073/* set in reify when reification needed */
2074#define EV_ANFD_REIFY 1
2075
483/* file descriptor info structure */ 2076/* file descriptor info structure */
484typedef struct 2077typedef struct
485{ 2078{
486 WL head; 2079 WL head;
487 unsigned char events; /* the events watched for */ 2080 unsigned char events; /* the events watched for */
488 unsigned char reify; /* flag set when this ANFD needs reification */ 2081 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
489 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 2082 unsigned char emask; /* some backends store the actual kernel mask in here */
490 unsigned char unused; 2083 unsigned char eflags; /* flags field for use by backends */
491#if EV_USE_EPOLL 2084#if EV_USE_EPOLL
492 unsigned int egen; /* generation counter to counter epoll bugs */ 2085 unsigned int egen; /* generation counter to counter epoll bugs */
493#endif 2086#endif
494#if EV_SELECT_IS_WINSOCKET 2087#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
495 SOCKET handle; 2088 SOCKET handle;
2089#endif
2090#if EV_USE_IOCP
2091 OVERLAPPED or, ow;
496#endif 2092#endif
497} ANFD; 2093} ANFD;
498 2094
499/* stores the pending event set for a given watcher */ 2095/* stores the pending event set for a given watcher */
500typedef struct 2096typedef struct
… …
542 #undef VAR 2138 #undef VAR
543 }; 2139 };
544 #include "ev_wrap.h" 2140 #include "ev_wrap.h"
545 2141
546 static struct ev_loop default_loop_struct; 2142 static struct ev_loop default_loop_struct;
547 struct ev_loop *ev_default_loop_ptr; 2143 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
548 2144
549#else 2145#else
550 2146
551 ev_tstamp ev_rt_now; 2147 EV_API_DECL ev_tstamp ev_rt_now = EV_TS_CONST (0.); /* needs to be initialised to make it a definition despite extern */
552 #define VAR(name,decl) static decl; 2148 #define VAR(name,decl) static decl;
553 #include "ev_vars.h" 2149 #include "ev_vars.h"
554 #undef VAR 2150 #undef VAR
555 2151
556 static int ev_default_loop_ptr; 2152 static int ev_default_loop_ptr;
557 2153
558#endif 2154#endif
559 2155
2156#if EV_FEATURE_API
2157# define EV_RELEASE_CB if (ecb_expect_false (release_cb)) release_cb (EV_A)
2158# define EV_ACQUIRE_CB if (ecb_expect_false (acquire_cb)) acquire_cb (EV_A)
2159# define EV_INVOKE_PENDING invoke_cb (EV_A)
2160#else
2161# define EV_RELEASE_CB (void)0
2162# define EV_ACQUIRE_CB (void)0
2163# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
2164#endif
2165
2166#define EVBREAK_RECURSE 0x80
2167
560/*****************************************************************************/ 2168/*****************************************************************************/
561 2169
2170#ifndef EV_HAVE_EV_TIME
562ev_tstamp 2171ev_tstamp
563ev_time (void) 2172ev_time (void) EV_NOEXCEPT
564{ 2173{
565#if EV_USE_REALTIME 2174#if EV_USE_REALTIME
566 if (expect_true (have_realtime)) 2175 if (ecb_expect_true (have_realtime))
567 { 2176 {
568 struct timespec ts; 2177 struct timespec ts;
569 clock_gettime (CLOCK_REALTIME, &ts); 2178 clock_gettime (CLOCK_REALTIME, &ts);
570 return ts.tv_sec + ts.tv_nsec * 1e-9; 2179 return EV_TS_GET (ts);
571 } 2180 }
572#endif 2181#endif
573 2182
2183 {
574 struct timeval tv; 2184 struct timeval tv;
575 gettimeofday (&tv, 0); 2185 gettimeofday (&tv, 0);
576 return tv.tv_sec + tv.tv_usec * 1e-6; 2186 return EV_TV_GET (tv);
2187 }
577} 2188}
2189#endif
578 2190
579inline_size ev_tstamp 2191inline_size ev_tstamp
580get_clock (void) 2192get_clock (void)
581{ 2193{
582#if EV_USE_MONOTONIC 2194#if EV_USE_MONOTONIC
583 if (expect_true (have_monotonic)) 2195 if (ecb_expect_true (have_monotonic))
584 { 2196 {
585 struct timespec ts; 2197 struct timespec ts;
586 clock_gettime (CLOCK_MONOTONIC, &ts); 2198 clock_gettime (CLOCK_MONOTONIC, &ts);
587 return ts.tv_sec + ts.tv_nsec * 1e-9; 2199 return EV_TS_GET (ts);
588 } 2200 }
589#endif 2201#endif
590 2202
591 return ev_time (); 2203 return ev_time ();
592} 2204}
593 2205
594#if EV_MULTIPLICITY 2206#if EV_MULTIPLICITY
595ev_tstamp 2207ev_tstamp
596ev_now (EV_P) 2208ev_now (EV_P) EV_NOEXCEPT
597{ 2209{
598 return ev_rt_now; 2210 return ev_rt_now;
599} 2211}
600#endif 2212#endif
601 2213
602void 2214void
603ev_sleep (ev_tstamp delay) 2215ev_sleep (ev_tstamp delay) EV_NOEXCEPT
604{ 2216{
605 if (delay > 0.) 2217 if (delay > EV_TS_CONST (0.))
606 { 2218 {
607#if EV_USE_NANOSLEEP 2219#if EV_USE_NANOSLEEP
608 struct timespec ts; 2220 struct timespec ts;
609 2221
610 ts.tv_sec = (time_t)delay; 2222 EV_TS_SET (ts, delay);
611 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
612
613 nanosleep (&ts, 0); 2223 nanosleep (&ts, 0);
614#elif defined(_WIN32) 2224#elif defined _WIN32
2225 /* maybe this should round up, as ms is very low resolution */
2226 /* compared to select (µs) or nanosleep (ns) */
615 Sleep ((unsigned long)(delay * 1e3)); 2227 Sleep ((unsigned long)(EV_TS_TO_MSEC (delay)));
616#else 2228#else
617 struct timeval tv; 2229 struct timeval tv;
618 2230
619 tv.tv_sec = (time_t)delay;
620 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
621
622 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 2231 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
623 /* somehting nto guaranteed by newer posix versions, but guaranteed */ 2232 /* something not guaranteed by newer posix versions, but guaranteed */
624 /* by older ones */ 2233 /* by older ones */
2234 EV_TV_SET (tv, delay);
625 select (0, 0, 0, 0, &tv); 2235 select (0, 0, 0, 0, &tv);
626#endif 2236#endif
627 } 2237 }
628} 2238}
629 2239
630/*****************************************************************************/ 2240/*****************************************************************************/
631 2241
632#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 2242#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
633 2243
634/* find a suitable new size for the given array, */ 2244/* find a suitable new size for the given array, */
635/* hopefully by rounding to a ncie-to-malloc size */ 2245/* hopefully by rounding to a nice-to-malloc size */
636inline_size int 2246inline_size int
637array_nextsize (int elem, int cur, int cnt) 2247array_nextsize (int elem, int cur, int cnt)
638{ 2248{
639 int ncur = cur + 1; 2249 int ncur = cur + 1;
640 2250
641 do 2251 do
642 ncur <<= 1; 2252 ncur <<= 1;
643 while (cnt > ncur); 2253 while (cnt > ncur);
644 2254
645 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 2255 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
646 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 2256 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
647 { 2257 {
648 ncur *= elem; 2258 ncur *= elem;
649 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 2259 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
650 ncur = ncur - sizeof (void *) * 4; 2260 ncur = ncur - sizeof (void *) * 4;
… …
652 } 2262 }
653 2263
654 return ncur; 2264 return ncur;
655} 2265}
656 2266
657static noinline void * 2267ecb_noinline ecb_cold
2268static void *
658array_realloc (int elem, void *base, int *cur, int cnt) 2269array_realloc (int elem, void *base, int *cur, int cnt)
659{ 2270{
660 *cur = array_nextsize (elem, *cur, cnt); 2271 *cur = array_nextsize (elem, *cur, cnt);
661 return ev_realloc (base, elem * *cur); 2272 return ev_realloc (base, elem * *cur);
662} 2273}
663 2274
2275#define array_needsize_noinit(base,offset,count)
2276
664#define array_init_zero(base,count) \ 2277#define array_needsize_zerofill(base,offset,count) \
665 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 2278 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
666 2279
667#define array_needsize(type,base,cur,cnt,init) \ 2280#define array_needsize(type,base,cur,cnt,init) \
668 if (expect_false ((cnt) > (cur))) \ 2281 if (ecb_expect_false ((cnt) > (cur))) \
669 { \ 2282 { \
670 int ocur_ = (cur); \ 2283 ecb_unused int ocur_ = (cur); \
671 (base) = (type *)array_realloc \ 2284 (base) = (type *)array_realloc \
672 (sizeof (type), (base), &(cur), (cnt)); \ 2285 (sizeof (type), (base), &(cur), (cnt)); \
673 init ((base) + (ocur_), (cur) - ocur_); \ 2286 init ((base), ocur_, ((cur) - ocur_)); \
674 } 2287 }
675 2288
676#if 0 2289#if 0
677#define array_slim(type,stem) \ 2290#define array_slim(type,stem) \
678 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2291 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
… …
687 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 2300 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
688 2301
689/*****************************************************************************/ 2302/*****************************************************************************/
690 2303
691/* dummy callback for pending events */ 2304/* dummy callback for pending events */
692static void noinline 2305ecb_noinline
2306static void
693pendingcb (EV_P_ ev_prepare *w, int revents) 2307pendingcb (EV_P_ ev_prepare *w, int revents)
694{ 2308{
695} 2309}
696 2310
697void noinline 2311ecb_noinline
2312void
698ev_feed_event (EV_P_ void *w, int revents) 2313ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
699{ 2314{
700 W w_ = (W)w; 2315 W w_ = (W)w;
701 int pri = ABSPRI (w_); 2316 int pri = ABSPRI (w_);
702 2317
703 if (expect_false (w_->pending)) 2318 if (ecb_expect_false (w_->pending))
704 pendings [pri][w_->pending - 1].events |= revents; 2319 pendings [pri][w_->pending - 1].events |= revents;
705 else 2320 else
706 { 2321 {
707 w_->pending = ++pendingcnt [pri]; 2322 w_->pending = ++pendingcnt [pri];
708 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2323 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
709 pendings [pri][w_->pending - 1].w = w_; 2324 pendings [pri][w_->pending - 1].w = w_;
710 pendings [pri][w_->pending - 1].events = revents; 2325 pendings [pri][w_->pending - 1].events = revents;
711 } 2326 }
2327
2328 pendingpri = NUMPRI - 1;
712} 2329}
713 2330
714inline_speed void 2331inline_speed void
715feed_reverse (EV_P_ W w) 2332feed_reverse (EV_P_ W w)
716{ 2333{
717 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2334 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
718 rfeeds [rfeedcnt++] = w; 2335 rfeeds [rfeedcnt++] = w;
719} 2336}
720 2337
721inline_size void 2338inline_size void
722feed_reverse_done (EV_P_ int revents) 2339feed_reverse_done (EV_P_ int revents)
… …
736} 2353}
737 2354
738/*****************************************************************************/ 2355/*****************************************************************************/
739 2356
740inline_speed void 2357inline_speed void
741fd_event (EV_P_ int fd, int revents) 2358fd_event_nocheck (EV_P_ int fd, int revents)
742{ 2359{
743 ANFD *anfd = anfds + fd; 2360 ANFD *anfd = anfds + fd;
744 ev_io *w; 2361 ev_io *w;
745 2362
746 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2363 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
750 if (ev) 2367 if (ev)
751 ev_feed_event (EV_A_ (W)w, ev); 2368 ev_feed_event (EV_A_ (W)w, ev);
752 } 2369 }
753} 2370}
754 2371
2372/* do not submit kernel events for fds that have reify set */
2373/* because that means they changed while we were polling for new events */
2374inline_speed void
2375fd_event (EV_P_ int fd, int revents)
2376{
2377 ANFD *anfd = anfds + fd;
2378
2379 if (ecb_expect_true (!anfd->reify))
2380 fd_event_nocheck (EV_A_ fd, revents);
2381}
2382
755void 2383void
756ev_feed_fd_event (EV_P_ int fd, int revents) 2384ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
757{ 2385{
758 if (fd >= 0 && fd < anfdmax) 2386 if (fd >= 0 && fd < anfdmax)
759 fd_event (EV_A_ fd, revents); 2387 fd_event_nocheck (EV_A_ fd, revents);
760} 2388}
761 2389
762/* make sure the external fd watch events are in-sync */ 2390/* make sure the external fd watch events are in-sync */
763/* with the kernel/libev internal state */ 2391/* with the kernel/libev internal state */
764inline_size void 2392inline_size void
765fd_reify (EV_P) 2393fd_reify (EV_P)
766{ 2394{
767 int i; 2395 int i;
768 2396
2397 /* most backends do not modify the fdchanges list in backend_modfiy.
2398 * except io_uring, which has fixed-size buffers which might force us
2399 * to handle events in backend_modify, causing fdchanges to be amended,
2400 * which could result in an endless loop.
2401 * to avoid this, we do not dynamically handle fds that were added
2402 * during fd_reify. that means that for those backends, fdchangecnt
2403 * might be non-zero during poll, which must cause them to not block.
2404 * to not put too much of a burden on other backends, this detail
2405 * needs to be handled in the backend.
2406 */
2407 int changecnt = fdchangecnt;
2408
2409#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
769 for (i = 0; i < fdchangecnt; ++i) 2410 for (i = 0; i < changecnt; ++i)
2411 {
2412 int fd = fdchanges [i];
2413 ANFD *anfd = anfds + fd;
2414
2415 if (anfd->reify & EV__IOFDSET && anfd->head)
2416 {
2417 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
2418
2419 if (handle != anfd->handle)
2420 {
2421 unsigned long arg;
2422
2423 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
2424
2425 /* handle changed, but fd didn't - we need to do it in two steps */
2426 backend_modify (EV_A_ fd, anfd->events, 0);
2427 anfd->events = 0;
2428 anfd->handle = handle;
2429 }
2430 }
2431 }
2432#endif
2433
2434 for (i = 0; i < changecnt; ++i)
770 { 2435 {
771 int fd = fdchanges [i]; 2436 int fd = fdchanges [i];
772 ANFD *anfd = anfds + fd; 2437 ANFD *anfd = anfds + fd;
773 ev_io *w; 2438 ev_io *w;
774 2439
775 unsigned char events = 0; 2440 unsigned char o_events = anfd->events;
2441 unsigned char o_reify = anfd->reify;
776 2442
777 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2443 anfd->reify = 0;
778 events |= (unsigned char)w->events;
779 2444
780#if EV_SELECT_IS_WINSOCKET 2445 /*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
781 if (events)
782 { 2446 {
783 unsigned long arg; 2447 anfd->events = 0;
784 #ifdef EV_FD_TO_WIN32_HANDLE 2448
785 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 2449 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
786 #else 2450 anfd->events |= (unsigned char)w->events;
787 anfd->handle = _get_osfhandle (fd); 2451
788 #endif 2452 if (o_events != anfd->events)
789 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 2453 o_reify = EV__IOFDSET; /* actually |= */
790 } 2454 }
791#endif
792 2455
793 { 2456 if (o_reify & EV__IOFDSET)
794 unsigned char o_events = anfd->events;
795 unsigned char o_reify = anfd->reify;
796
797 anfd->reify = 0;
798 anfd->events = events;
799
800 if (o_events != events || o_reify & EV__IOFDSET)
801 backend_modify (EV_A_ fd, o_events, events); 2457 backend_modify (EV_A_ fd, o_events, anfd->events);
802 } 2458 }
803 }
804 2459
2460 /* normally, fdchangecnt hasn't changed. if it has, then new fds have been added.
2461 * this is a rare case (see beginning comment in this function), so we copy them to the
2462 * front and hope the backend handles this case.
2463 */
2464 if (ecb_expect_false (fdchangecnt != changecnt))
2465 memmove (fdchanges, fdchanges + changecnt, (fdchangecnt - changecnt) * sizeof (*fdchanges));
2466
805 fdchangecnt = 0; 2467 fdchangecnt -= changecnt;
806} 2468}
807 2469
808/* something about the given fd changed */ 2470/* something about the given fd changed */
809inline_size void 2471inline_size
2472void
810fd_change (EV_P_ int fd, int flags) 2473fd_change (EV_P_ int fd, int flags)
811{ 2474{
812 unsigned char reify = anfds [fd].reify; 2475 unsigned char reify = anfds [fd].reify;
813 anfds [fd].reify |= flags; 2476 anfds [fd].reify = reify | flags;
814 2477
815 if (expect_true (!reify)) 2478 if (ecb_expect_true (!reify))
816 { 2479 {
817 ++fdchangecnt; 2480 ++fdchangecnt;
818 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2481 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
819 fdchanges [fdchangecnt - 1] = fd; 2482 fdchanges [fdchangecnt - 1] = fd;
820 } 2483 }
821} 2484}
822 2485
823/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2486/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
824inline_speed void 2487inline_speed ecb_cold void
825fd_kill (EV_P_ int fd) 2488fd_kill (EV_P_ int fd)
826{ 2489{
827 ev_io *w; 2490 ev_io *w;
828 2491
829 while ((w = (ev_io *)anfds [fd].head)) 2492 while ((w = (ev_io *)anfds [fd].head))
… …
831 ev_io_stop (EV_A_ w); 2494 ev_io_stop (EV_A_ w);
832 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2495 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
833 } 2496 }
834} 2497}
835 2498
836/* check whether the given fd is atcually valid, for error recovery */ 2499/* check whether the given fd is actually valid, for error recovery */
837inline_size int 2500inline_size ecb_cold int
838fd_valid (int fd) 2501fd_valid (int fd)
839{ 2502{
840#ifdef _WIN32 2503#ifdef _WIN32
841 return _get_osfhandle (fd) != -1; 2504 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
842#else 2505#else
843 return fcntl (fd, F_GETFD) != -1; 2506 return fcntl (fd, F_GETFD) != -1;
844#endif 2507#endif
845} 2508}
846 2509
847/* called on EBADF to verify fds */ 2510/* called on EBADF to verify fds */
848static void noinline 2511ecb_noinline ecb_cold
2512static void
849fd_ebadf (EV_P) 2513fd_ebadf (EV_P)
850{ 2514{
851 int fd; 2515 int fd;
852 2516
853 for (fd = 0; fd < anfdmax; ++fd) 2517 for (fd = 0; fd < anfdmax; ++fd)
… …
855 if (!fd_valid (fd) && errno == EBADF) 2519 if (!fd_valid (fd) && errno == EBADF)
856 fd_kill (EV_A_ fd); 2520 fd_kill (EV_A_ fd);
857} 2521}
858 2522
859/* called on ENOMEM in select/poll to kill some fds and retry */ 2523/* called on ENOMEM in select/poll to kill some fds and retry */
860static void noinline 2524ecb_noinline ecb_cold
2525static void
861fd_enomem (EV_P) 2526fd_enomem (EV_P)
862{ 2527{
863 int fd; 2528 int fd;
864 2529
865 for (fd = anfdmax; fd--; ) 2530 for (fd = anfdmax; fd--; )
866 if (anfds [fd].events) 2531 if (anfds [fd].events)
867 { 2532 {
868 fd_kill (EV_A_ fd); 2533 fd_kill (EV_A_ fd);
869 return; 2534 break;
870 } 2535 }
871} 2536}
872 2537
873/* usually called after fork if backend needs to re-arm all fds from scratch */ 2538/* usually called after fork if backend needs to re-arm all fds from scratch */
874static void noinline 2539ecb_noinline
2540static void
875fd_rearm_all (EV_P) 2541fd_rearm_all (EV_P)
876{ 2542{
877 int fd; 2543 int fd;
878 2544
879 for (fd = 0; fd < anfdmax; ++fd) 2545 for (fd = 0; fd < anfdmax; ++fd)
880 if (anfds [fd].events) 2546 if (anfds [fd].events)
881 { 2547 {
882 anfds [fd].events = 0; 2548 anfds [fd].events = 0;
883 anfds [fd].emask = 0; 2549 anfds [fd].emask = 0;
884 fd_change (EV_A_ fd, EV__IOFDSET | 1); 2550 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
885 } 2551 }
886} 2552}
887 2553
2554/* used to prepare libev internal fd's */
2555/* this is not fork-safe */
2556inline_speed void
2557fd_intern (int fd)
2558{
2559#ifdef _WIN32
2560 unsigned long arg = 1;
2561 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
2562#else
2563 fcntl (fd, F_SETFD, FD_CLOEXEC);
2564 fcntl (fd, F_SETFL, O_NONBLOCK);
2565#endif
2566}
2567
888/*****************************************************************************/ 2568/*****************************************************************************/
889 2569
890/* 2570/*
891 * the heap functions want a real array index. array index 0 uis guaranteed to not 2571 * the heap functions want a real array index. array index 0 is guaranteed to not
892 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 2572 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
893 * the branching factor of the d-tree. 2573 * the branching factor of the d-tree.
894 */ 2574 */
895 2575
896/* 2576/*
… …
918 ev_tstamp minat; 2598 ev_tstamp minat;
919 ANHE *minpos; 2599 ANHE *minpos;
920 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; 2600 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
921 2601
922 /* find minimum child */ 2602 /* find minimum child */
923 if (expect_true (pos + DHEAP - 1 < E)) 2603 if (ecb_expect_true (pos + DHEAP - 1 < E))
924 { 2604 {
925 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2605 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
926 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2606 if ( minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
927 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2607 if ( minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
928 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2608 if ( minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
929 } 2609 }
930 else if (pos < E) 2610 else if (pos < E)
931 { 2611 {
932 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2612 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
933 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2613 if (pos + 1 < E && minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
934 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2614 if (pos + 2 < E && minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
935 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2615 if (pos + 3 < E && minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
936 } 2616 }
937 else 2617 else
938 break; 2618 break;
939 2619
940 if (ANHE_at (he) <= minat) 2620 if (ANHE_at (he) <= minat)
… …
948 2628
949 heap [k] = he; 2629 heap [k] = he;
950 ev_active (ANHE_w (he)) = k; 2630 ev_active (ANHE_w (he)) = k;
951} 2631}
952 2632
953#else /* 4HEAP */ 2633#else /* not 4HEAP */
954 2634
955#define HEAP0 1 2635#define HEAP0 1
956#define HPARENT(k) ((k) >> 1) 2636#define HPARENT(k) ((k) >> 1)
957#define UPHEAP_DONE(p,k) (!(p)) 2637#define UPHEAP_DONE(p,k) (!(p))
958 2638
… …
964 2644
965 for (;;) 2645 for (;;)
966 { 2646 {
967 int c = k << 1; 2647 int c = k << 1;
968 2648
969 if (c > N + HEAP0 - 1) 2649 if (c >= N + HEAP0)
970 break; 2650 break;
971 2651
972 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 2652 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
973 ? 1 : 0; 2653 ? 1 : 0;
974 2654
… …
1010 2690
1011/* move an element suitably so it is in a correct place */ 2691/* move an element suitably so it is in a correct place */
1012inline_size void 2692inline_size void
1013adjustheap (ANHE *heap, int N, int k) 2693adjustheap (ANHE *heap, int N, int k)
1014{ 2694{
1015 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 2695 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1016 upheap (heap, k); 2696 upheap (heap, k);
1017 else 2697 else
1018 downheap (heap, N, k); 2698 downheap (heap, N, k);
1019} 2699}
1020 2700
… …
1030 upheap (heap, i + HEAP0); 2710 upheap (heap, i + HEAP0);
1031} 2711}
1032 2712
1033/*****************************************************************************/ 2713/*****************************************************************************/
1034 2714
1035/* associate signal watchers to a signal signal */ 2715/* associate signal watchers to a signal */
1036typedef struct 2716typedef struct
1037{ 2717{
2718 EV_ATOMIC_T pending;
2719#if EV_MULTIPLICITY
2720 EV_P;
2721#endif
1038 WL head; 2722 WL head;
1039 EV_ATOMIC_T gotsig;
1040} ANSIG; 2723} ANSIG;
1041 2724
1042static ANSIG *signals; 2725static ANSIG signals [EV_NSIG - 1];
1043static int signalmax;
1044
1045static EV_ATOMIC_T gotsig;
1046 2726
1047/*****************************************************************************/ 2727/*****************************************************************************/
1048 2728
1049/* used to prepare libev internal fd's */ 2729#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1050/* this is not fork-safe */ 2730
2731ecb_noinline ecb_cold
2732static void
2733evpipe_init (EV_P)
2734{
2735 if (!ev_is_active (&pipe_w))
2736 {
2737 int fds [2];
2738
2739# if EV_USE_EVENTFD
2740 fds [0] = -1;
2741 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
2742 if (fds [1] < 0 && errno == EINVAL)
2743 fds [1] = eventfd (0, 0);
2744
2745 if (fds [1] < 0)
2746# endif
2747 {
2748 while (pipe (fds))
2749 ev_syserr ("(libev) error creating signal/async pipe");
2750
2751 fd_intern (fds [0]);
2752 }
2753
2754 evpipe [0] = fds [0];
2755
2756 if (evpipe [1] < 0)
2757 evpipe [1] = fds [1]; /* first call, set write fd */
2758 else
2759 {
2760 /* on subsequent calls, do not change evpipe [1] */
2761 /* so that evpipe_write can always rely on its value. */
2762 /* this branch does not do anything sensible on windows, */
2763 /* so must not be executed on windows */
2764
2765 dup2 (fds [1], evpipe [1]);
2766 close (fds [1]);
2767 }
2768
2769 fd_intern (evpipe [1]);
2770
2771 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2772 ev_io_start (EV_A_ &pipe_w);
2773 ev_unref (EV_A); /* watcher should not keep loop alive */
2774 }
2775}
2776
1051inline_speed void 2777inline_speed void
1052fd_intern (int fd) 2778evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1053{ 2779{
1054#ifdef _WIN32 2780 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1055 unsigned long arg = 1;
1056 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1057#else
1058 fcntl (fd, F_SETFD, FD_CLOEXEC);
1059 fcntl (fd, F_SETFL, O_NONBLOCK);
1060#endif
1061}
1062 2781
1063static void noinline 2782 if (ecb_expect_true (*flag))
1064evpipe_init (EV_P) 2783 return;
1065{ 2784
1066 if (!ev_is_active (&pipe_w)) 2785 *flag = 1;
2786 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2787
2788 pipe_write_skipped = 1;
2789
2790 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2791
2792 if (pipe_write_wanted)
1067 { 2793 {
2794 int old_errno;
2795
2796 pipe_write_skipped = 0;
2797 ECB_MEMORY_FENCE_RELEASE;
2798
2799 old_errno = errno; /* save errno because write will clobber it */
2800
1068#if EV_USE_EVENTFD 2801#if EV_USE_EVENTFD
1069 if ((evfd = eventfd (0, 0)) >= 0) 2802 if (evpipe [0] < 0)
1070 { 2803 {
1071 evpipe [0] = -1; 2804 uint64_t counter = 1;
1072 fd_intern (evfd); 2805 write (evpipe [1], &counter, sizeof (uint64_t));
1073 ev_io_set (&pipe_w, evfd, EV_READ);
1074 } 2806 }
1075 else 2807 else
1076#endif 2808#endif
1077 { 2809 {
1078 while (pipe (evpipe)) 2810#ifdef _WIN32
1079 ev_syserr ("(libev) error creating signal/async pipe"); 2811 WSABUF buf;
1080 2812 DWORD sent;
1081 fd_intern (evpipe [0]); 2813 buf.buf = (char *)&buf;
1082 fd_intern (evpipe [1]); 2814 buf.len = 1;
1083 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2815 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2816#else
2817 write (evpipe [1], &(evpipe [1]), 1);
2818#endif
1084 } 2819 }
1085
1086 ev_io_start (EV_A_ &pipe_w);
1087 ev_unref (EV_A); /* watcher should not keep loop alive */
1088 }
1089}
1090
1091inline_size void
1092evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1093{
1094 if (!*flag)
1095 {
1096 int old_errno = errno; /* save errno because write might clobber it */
1097
1098 *flag = 1;
1099
1100#if EV_USE_EVENTFD
1101 if (evfd >= 0)
1102 {
1103 uint64_t counter = 1;
1104 write (evfd, &counter, sizeof (uint64_t));
1105 }
1106 else
1107#endif
1108 write (evpipe [1], &old_errno, 1);
1109 2820
1110 errno = old_errno; 2821 errno = old_errno;
1111 } 2822 }
1112} 2823}
1113 2824
1114/* called whenever the libev signal pipe */ 2825/* called whenever the libev signal pipe */
1115/* got some events (signal, async) */ 2826/* got some events (signal, async) */
1116static void 2827static void
1117pipecb (EV_P_ ev_io *iow, int revents) 2828pipecb (EV_P_ ev_io *iow, int revents)
1118{ 2829{
2830 int i;
2831
2832 if (revents & EV_READ)
2833 {
1119#if EV_USE_EVENTFD 2834#if EV_USE_EVENTFD
1120 if (evfd >= 0) 2835 if (evpipe [0] < 0)
1121 { 2836 {
1122 uint64_t counter; 2837 uint64_t counter;
1123 read (evfd, &counter, sizeof (uint64_t)); 2838 read (evpipe [1], &counter, sizeof (uint64_t));
1124 } 2839 }
1125 else 2840 else
1126#endif 2841#endif
1127 { 2842 {
1128 char dummy; 2843 char dummy[4];
2844#ifdef _WIN32
2845 WSABUF buf;
2846 DWORD recvd;
2847 DWORD flags = 0;
2848 buf.buf = dummy;
2849 buf.len = sizeof (dummy);
2850 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2851#else
1129 read (evpipe [0], &dummy, 1); 2852 read (evpipe [0], &dummy, sizeof (dummy));
2853#endif
2854 }
2855 }
2856
2857 pipe_write_skipped = 0;
2858
2859 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2860
2861#if EV_SIGNAL_ENABLE
2862 if (sig_pending)
1130 } 2863 {
2864 sig_pending = 0;
1131 2865
1132 if (gotsig && ev_is_default_loop (EV_A)) 2866 ECB_MEMORY_FENCE;
1133 {
1134 int signum;
1135 gotsig = 0;
1136 2867
1137 for (signum = signalmax; signum--; ) 2868 for (i = EV_NSIG - 1; i--; )
1138 if (signals [signum].gotsig) 2869 if (ecb_expect_false (signals [i].pending))
1139 ev_feed_signal_event (EV_A_ signum + 1); 2870 ev_feed_signal_event (EV_A_ i + 1);
1140 } 2871 }
2872#endif
1141 2873
1142#if EV_ASYNC_ENABLE 2874#if EV_ASYNC_ENABLE
1143 if (gotasync) 2875 if (async_pending)
1144 { 2876 {
1145 int i; 2877 async_pending = 0;
1146 gotasync = 0; 2878
2879 ECB_MEMORY_FENCE;
1147 2880
1148 for (i = asynccnt; i--; ) 2881 for (i = asynccnt; i--; )
1149 if (asyncs [i]->sent) 2882 if (asyncs [i]->sent)
1150 { 2883 {
1151 asyncs [i]->sent = 0; 2884 asyncs [i]->sent = 0;
2885 ECB_MEMORY_FENCE_RELEASE;
1152 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2886 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1153 } 2887 }
1154 } 2888 }
1155#endif 2889#endif
1156} 2890}
1157 2891
1158/*****************************************************************************/ 2892/*****************************************************************************/
1159 2893
2894void
2895ev_feed_signal (int signum) EV_NOEXCEPT
2896{
2897#if EV_MULTIPLICITY
2898 EV_P;
2899 ECB_MEMORY_FENCE_ACQUIRE;
2900 EV_A = signals [signum - 1].loop;
2901
2902 if (!EV_A)
2903 return;
2904#endif
2905
2906 signals [signum - 1].pending = 1;
2907 evpipe_write (EV_A_ &sig_pending);
2908}
2909
1160static void 2910static void
1161ev_sighandler (int signum) 2911ev_sighandler (int signum)
1162{ 2912{
2913#ifdef _WIN32
2914 signal (signum, ev_sighandler);
2915#endif
2916
2917 ev_feed_signal (signum);
2918}
2919
2920ecb_noinline
2921void
2922ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
2923{
2924 WL w;
2925
2926 if (ecb_expect_false (signum <= 0 || signum >= EV_NSIG))
2927 return;
2928
2929 --signum;
2930
1163#if EV_MULTIPLICITY 2931#if EV_MULTIPLICITY
1164 struct ev_loop *loop = &default_loop_struct; 2932 /* it is permissible to try to feed a signal to the wrong loop */
1165#endif 2933 /* or, likely more useful, feeding a signal nobody is waiting for */
1166 2934
1167#if _WIN32 2935 if (ecb_expect_false (signals [signum].loop != EV_A))
1168 signal (signum, ev_sighandler);
1169#endif
1170
1171 signals [signum - 1].gotsig = 1;
1172 evpipe_write (EV_A_ &gotsig);
1173}
1174
1175void noinline
1176ev_feed_signal_event (EV_P_ int signum)
1177{
1178 WL w;
1179
1180#if EV_MULTIPLICITY
1181 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1182#endif
1183
1184 --signum;
1185
1186 if (signum < 0 || signum >= signalmax)
1187 return; 2936 return;
2937#endif
1188 2938
1189 signals [signum].gotsig = 0; 2939 signals [signum].pending = 0;
2940 ECB_MEMORY_FENCE_RELEASE;
1190 2941
1191 for (w = signals [signum].head; w; w = w->next) 2942 for (w = signals [signum].head; w; w = w->next)
1192 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2943 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1193} 2944}
1194 2945
2946#if EV_USE_SIGNALFD
2947static void
2948sigfdcb (EV_P_ ev_io *iow, int revents)
2949{
2950 struct signalfd_siginfo si[2], *sip; /* these structs are big */
2951
2952 for (;;)
2953 {
2954 ssize_t res = read (sigfd, si, sizeof (si));
2955
2956 /* not ISO-C, as res might be -1, but works with SuS */
2957 for (sip = si; (char *)sip < (char *)si + res; ++sip)
2958 ev_feed_signal_event (EV_A_ sip->ssi_signo);
2959
2960 if (res < (ssize_t)sizeof (si))
2961 break;
2962 }
2963}
2964#endif
2965
2966#endif
2967
1195/*****************************************************************************/ 2968/*****************************************************************************/
1196 2969
2970#if EV_CHILD_ENABLE
1197static WL childs [EV_PID_HASHSIZE]; 2971static WL childs [EV_PID_HASHSIZE];
1198
1199#ifndef _WIN32
1200 2972
1201static ev_signal childev; 2973static ev_signal childev;
1202 2974
1203#ifndef WIFCONTINUED 2975#ifndef WIFCONTINUED
1204# define WIFCONTINUED(status) 0 2976# define WIFCONTINUED(status) 0
… …
1209child_reap (EV_P_ int chain, int pid, int status) 2981child_reap (EV_P_ int chain, int pid, int status)
1210{ 2982{
1211 ev_child *w; 2983 ev_child *w;
1212 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2984 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1213 2985
1214 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2986 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1215 { 2987 {
1216 if ((w->pid == pid || !w->pid) 2988 if ((w->pid == pid || !w->pid)
1217 && (!traced || (w->flags & 1))) 2989 && (!traced || (w->flags & 1)))
1218 { 2990 {
1219 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2991 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1244 /* make sure we are called again until all children have been reaped */ 3016 /* make sure we are called again until all children have been reaped */
1245 /* we need to do it this way so that the callback gets called before we continue */ 3017 /* we need to do it this way so that the callback gets called before we continue */
1246 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 3018 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1247 3019
1248 child_reap (EV_A_ pid, pid, status); 3020 child_reap (EV_A_ pid, pid, status);
1249 if (EV_PID_HASHSIZE > 1) 3021 if ((EV_PID_HASHSIZE) > 1)
1250 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 3022 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1251} 3023}
1252 3024
1253#endif 3025#endif
1254 3026
1255/*****************************************************************************/ 3027/*****************************************************************************/
1256 3028
3029#if EV_USE_TIMERFD
3030
3031static void periodics_reschedule (EV_P);
3032
3033static void
3034timerfdcb (EV_P_ ev_io *iow, int revents)
3035{
3036 struct itimerspec its = { 0 };
3037
3038 its.it_value.tv_sec = ev_rt_now + (int)MAX_BLOCKTIME2;
3039 timerfd_settime (timerfd, TFD_TIMER_ABSTIME | TFD_TIMER_CANCEL_ON_SET, &its, 0);
3040
3041 ev_rt_now = ev_time ();
3042 /* periodics_reschedule only needs ev_rt_now */
3043 /* but maybe in the future we want the full treatment. */
3044 /*
3045 now_floor = EV_TS_CONST (0.);
3046 time_update (EV_A_ EV_TSTAMP_HUGE);
3047 */
3048#if EV_PERIODIC_ENABLE
3049 periodics_reschedule (EV_A);
3050#endif
3051}
3052
3053ecb_noinline ecb_cold
3054static void
3055evtimerfd_init (EV_P)
3056{
3057 if (!ev_is_active (&timerfd_w))
3058 {
3059 timerfd = timerfd_create (CLOCK_REALTIME, TFD_NONBLOCK | TFD_CLOEXEC);
3060
3061 if (timerfd >= 0)
3062 {
3063 fd_intern (timerfd); /* just to be sure */
3064
3065 ev_io_init (&timerfd_w, timerfdcb, timerfd, EV_READ);
3066 ev_set_priority (&timerfd_w, EV_MINPRI);
3067 ev_io_start (EV_A_ &timerfd_w);
3068 ev_unref (EV_A); /* watcher should not keep loop alive */
3069
3070 /* (re-) arm timer */
3071 timerfdcb (EV_A_ 0, 0);
3072 }
3073 }
3074}
3075
3076#endif
3077
3078/*****************************************************************************/
3079
3080#if EV_USE_IOCP
3081# include "ev_iocp.c"
3082#endif
1257#if EV_USE_PORT 3083#if EV_USE_PORT
1258# include "ev_port.c" 3084# include "ev_port.c"
1259#endif 3085#endif
1260#if EV_USE_KQUEUE 3086#if EV_USE_KQUEUE
1261# include "ev_kqueue.c" 3087# include "ev_kqueue.c"
1262#endif 3088#endif
1263#if EV_USE_EPOLL 3089#if EV_USE_EPOLL
1264# include "ev_epoll.c" 3090# include "ev_epoll.c"
1265#endif 3091#endif
3092#if EV_USE_LINUXAIO
3093# include "ev_linuxaio.c"
3094#endif
3095#if EV_USE_IOURING
3096# include "ev_iouring.c"
3097#endif
1266#if EV_USE_POLL 3098#if EV_USE_POLL
1267# include "ev_poll.c" 3099# include "ev_poll.c"
1268#endif 3100#endif
1269#if EV_USE_SELECT 3101#if EV_USE_SELECT
1270# include "ev_select.c" 3102# include "ev_select.c"
1271#endif 3103#endif
1272 3104
1273int 3105ecb_cold int
1274ev_version_major (void) 3106ev_version_major (void) EV_NOEXCEPT
1275{ 3107{
1276 return EV_VERSION_MAJOR; 3108 return EV_VERSION_MAJOR;
1277} 3109}
1278 3110
1279int 3111ecb_cold int
1280ev_version_minor (void) 3112ev_version_minor (void) EV_NOEXCEPT
1281{ 3113{
1282 return EV_VERSION_MINOR; 3114 return EV_VERSION_MINOR;
1283} 3115}
1284 3116
1285/* return true if we are running with elevated privileges and should ignore env variables */ 3117/* return true if we are running with elevated privileges and should ignore env variables */
1286int inline_size 3118inline_size ecb_cold int
1287enable_secure (void) 3119enable_secure (void)
1288{ 3120{
1289#ifdef _WIN32 3121#ifdef _WIN32
1290 return 0; 3122 return 0;
1291#else 3123#else
1292 return getuid () != geteuid () 3124 return getuid () != geteuid ()
1293 || getgid () != getegid (); 3125 || getgid () != getegid ();
1294#endif 3126#endif
1295} 3127}
1296 3128
3129ecb_cold
1297unsigned int 3130unsigned int
1298ev_supported_backends (void) 3131ev_supported_backends (void) EV_NOEXCEPT
1299{ 3132{
1300 unsigned int flags = 0; 3133 unsigned int flags = 0;
1301 3134
1302 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 3135 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1303 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 3136 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
1304 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 3137 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
1305 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 3138 if (EV_USE_LINUXAIO ) flags |= EVBACKEND_LINUXAIO;
1306 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 3139 if (EV_USE_IOURING && ev_linux_version () >= 0x050601) flags |= EVBACKEND_IOURING; /* 5.6.1+ */
1307 3140 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
3141 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
3142
1308 return flags; 3143 return flags;
1309} 3144}
1310 3145
3146ecb_cold
1311unsigned int 3147unsigned int
1312ev_recommended_backends (void) 3148ev_recommended_backends (void) EV_NOEXCEPT
1313{ 3149{
1314 unsigned int flags = ev_supported_backends (); 3150 unsigned int flags = ev_supported_backends ();
1315 3151
1316#ifndef __NetBSD__ 3152#ifndef __NetBSD__
1317 /* kqueue is borked on everything but netbsd apparently */ 3153 /* kqueue is borked on everything but netbsd apparently */
… …
1321#ifdef __APPLE__ 3157#ifdef __APPLE__
1322 /* only select works correctly on that "unix-certified" platform */ 3158 /* only select works correctly on that "unix-certified" platform */
1323 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 3159 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1324 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 3160 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1325#endif 3161#endif
3162#ifdef __FreeBSD__
3163 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
3164#endif
3165
3166 /* TODO: linuxaio is very experimental */
3167#if !EV_RECOMMEND_LINUXAIO
3168 flags &= ~EVBACKEND_LINUXAIO;
3169#endif
3170 /* TODO: iouring is super experimental */
3171#if !EV_RECOMMEND_IOURING
3172 flags &= ~EVBACKEND_IOURING;
3173#endif
1326 3174
1327 return flags; 3175 return flags;
1328} 3176}
1329 3177
3178ecb_cold
1330unsigned int 3179unsigned int
1331ev_embeddable_backends (void) 3180ev_embeddable_backends (void) EV_NOEXCEPT
1332{ 3181{
1333 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 3182 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT | EVBACKEND_IOURING;
1334 3183
1335 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 3184 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1336 /* please fix it and tell me how to detect the fix */ 3185 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1337 flags &= ~EVBACKEND_EPOLL; 3186 flags &= ~EVBACKEND_EPOLL;
3187
3188 /* EVBACKEND_LINUXAIO is theoretically embeddable, but suffers from a performance overhead */
1338 3189
1339 return flags; 3190 return flags;
1340} 3191}
1341 3192
1342unsigned int 3193unsigned int
1343ev_backend (EV_P) 3194ev_backend (EV_P) EV_NOEXCEPT
1344{ 3195{
1345 return backend; 3196 return backend;
1346} 3197}
1347 3198
3199#if EV_FEATURE_API
1348unsigned int 3200unsigned int
1349ev_loop_count (EV_P) 3201ev_iteration (EV_P) EV_NOEXCEPT
1350{ 3202{
1351 return loop_count; 3203 return loop_count;
1352} 3204}
1353 3205
3206unsigned int
3207ev_depth (EV_P) EV_NOEXCEPT
3208{
3209 return loop_depth;
3210}
3211
1354void 3212void
1355ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 3213ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1356{ 3214{
1357 io_blocktime = interval; 3215 io_blocktime = interval;
1358} 3216}
1359 3217
1360void 3218void
1361ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 3219ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1362{ 3220{
1363 timeout_blocktime = interval; 3221 timeout_blocktime = interval;
1364} 3222}
1365 3223
3224void
3225ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
3226{
3227 userdata = data;
3228}
3229
3230void *
3231ev_userdata (EV_P) EV_NOEXCEPT
3232{
3233 return userdata;
3234}
3235
3236void
3237ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
3238{
3239 invoke_cb = invoke_pending_cb;
3240}
3241
3242void
3243ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
3244{
3245 release_cb = release;
3246 acquire_cb = acquire;
3247}
3248#endif
3249
1366/* initialise a loop structure, must be zero-initialised */ 3250/* initialise a loop structure, must be zero-initialised */
1367static void noinline 3251ecb_noinline ecb_cold
3252static void
1368loop_init (EV_P_ unsigned int flags) 3253loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
1369{ 3254{
1370 if (!backend) 3255 if (!backend)
1371 { 3256 {
3257 origflags = flags;
3258
1372#if EV_USE_REALTIME 3259#if EV_USE_REALTIME
1373 if (!have_realtime) 3260 if (!have_realtime)
1374 { 3261 {
1375 struct timespec ts; 3262 struct timespec ts;
1376 3263
… …
1387 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 3274 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1388 have_monotonic = 1; 3275 have_monotonic = 1;
1389 } 3276 }
1390#endif 3277#endif
1391 3278
1392 ev_rt_now = ev_time ();
1393 mn_now = get_clock ();
1394 now_floor = mn_now;
1395 rtmn_diff = ev_rt_now - mn_now;
1396
1397 io_blocktime = 0.;
1398 timeout_blocktime = 0.;
1399 backend = 0;
1400 backend_fd = -1;
1401 gotasync = 0;
1402#if EV_USE_INOTIFY
1403 fs_fd = -2;
1404#endif
1405
1406 /* pid check not overridable via env */ 3279 /* pid check not overridable via env */
1407#ifndef _WIN32 3280#ifndef _WIN32
1408 if (flags & EVFLAG_FORKCHECK) 3281 if (flags & EVFLAG_FORKCHECK)
1409 curpid = getpid (); 3282 curpid = getpid ();
1410#endif 3283#endif
… …
1412 if (!(flags & EVFLAG_NOENV) 3285 if (!(flags & EVFLAG_NOENV)
1413 && !enable_secure () 3286 && !enable_secure ()
1414 && getenv ("LIBEV_FLAGS")) 3287 && getenv ("LIBEV_FLAGS"))
1415 flags = atoi (getenv ("LIBEV_FLAGS")); 3288 flags = atoi (getenv ("LIBEV_FLAGS"));
1416 3289
1417 if (!(flags & 0x0000ffffU)) 3290 ev_rt_now = ev_time ();
3291 mn_now = get_clock ();
3292 now_floor = mn_now;
3293 rtmn_diff = ev_rt_now - mn_now;
3294#if EV_FEATURE_API
3295 invoke_cb = ev_invoke_pending;
3296#endif
3297
3298 io_blocktime = 0.;
3299 timeout_blocktime = 0.;
3300 backend = 0;
3301 backend_fd = -1;
3302 sig_pending = 0;
3303#if EV_ASYNC_ENABLE
3304 async_pending = 0;
3305#endif
3306 pipe_write_skipped = 0;
3307 pipe_write_wanted = 0;
3308 evpipe [0] = -1;
3309 evpipe [1] = -1;
3310#if EV_USE_INOTIFY
3311 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
3312#endif
3313#if EV_USE_SIGNALFD
3314 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
3315#endif
3316#if EV_USE_TIMERFD
3317 timerfd = flags & EVFLAG_NOTIMERFD ? -1 : -2;
3318#endif
3319
3320 if (!(flags & EVBACKEND_MASK))
1418 flags |= ev_recommended_backends (); 3321 flags |= ev_recommended_backends ();
1419 3322
3323#if EV_USE_IOCP
3324 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
3325#endif
1420#if EV_USE_PORT 3326#if EV_USE_PORT
1421 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 3327 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1422#endif 3328#endif
1423#if EV_USE_KQUEUE 3329#if EV_USE_KQUEUE
1424 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 3330 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
3331#endif
3332#if EV_USE_IOURING
3333 if (!backend && (flags & EVBACKEND_IOURING )) backend = iouring_init (EV_A_ flags);
3334#endif
3335#if EV_USE_LINUXAIO
3336 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
1425#endif 3337#endif
1426#if EV_USE_EPOLL 3338#if EV_USE_EPOLL
1427 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 3339 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
1428#endif 3340#endif
1429#if EV_USE_POLL 3341#if EV_USE_POLL
1430 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 3342 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
1431#endif 3343#endif
1432#if EV_USE_SELECT 3344#if EV_USE_SELECT
1433 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 3345 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
1434#endif 3346#endif
1435 3347
1436 ev_prepare_init (&pending_w, pendingcb); 3348 ev_prepare_init (&pending_w, pendingcb);
1437 3349
3350#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1438 ev_init (&pipe_w, pipecb); 3351 ev_init (&pipe_w, pipecb);
1439 ev_set_priority (&pipe_w, EV_MAXPRI); 3352 ev_set_priority (&pipe_w, EV_MAXPRI);
3353#endif
1440 } 3354 }
1441} 3355}
1442 3356
1443/* free up a loop structure */ 3357/* free up a loop structure */
1444static void noinline 3358ecb_cold
3359void
1445loop_destroy (EV_P) 3360ev_loop_destroy (EV_P)
1446{ 3361{
1447 int i; 3362 int i;
1448 3363
3364#if EV_MULTIPLICITY
3365 /* mimic free (0) */
3366 if (!EV_A)
3367 return;
3368#endif
3369
3370#if EV_CLEANUP_ENABLE
3371 /* queue cleanup watchers (and execute them) */
3372 if (ecb_expect_false (cleanupcnt))
3373 {
3374 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
3375 EV_INVOKE_PENDING;
3376 }
3377#endif
3378
3379#if EV_CHILD_ENABLE
3380 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
3381 {
3382 ev_ref (EV_A); /* child watcher */
3383 ev_signal_stop (EV_A_ &childev);
3384 }
3385#endif
3386
1449 if (ev_is_active (&pipe_w)) 3387 if (ev_is_active (&pipe_w))
1450 { 3388 {
1451 ev_ref (EV_A); /* signal watcher */ 3389 /*ev_ref (EV_A);*/
1452 ev_io_stop (EV_A_ &pipe_w); 3390 /*ev_io_stop (EV_A_ &pipe_w);*/
1453 3391
3392 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
3393 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
3394 }
3395
3396#if EV_USE_SIGNALFD
3397 if (ev_is_active (&sigfd_w))
3398 close (sigfd);
3399#endif
3400
1454#if EV_USE_EVENTFD 3401#if EV_USE_TIMERFD
1455 if (evfd >= 0) 3402 if (ev_is_active (&timerfd_w))
1456 close (evfd); 3403 close (timerfd);
1457#endif 3404#endif
1458
1459 if (evpipe [0] >= 0)
1460 {
1461 close (evpipe [0]);
1462 close (evpipe [1]);
1463 }
1464 }
1465 3405
1466#if EV_USE_INOTIFY 3406#if EV_USE_INOTIFY
1467 if (fs_fd >= 0) 3407 if (fs_fd >= 0)
1468 close (fs_fd); 3408 close (fs_fd);
1469#endif 3409#endif
1470 3410
1471 if (backend_fd >= 0) 3411 if (backend_fd >= 0)
1472 close (backend_fd); 3412 close (backend_fd);
1473 3413
3414#if EV_USE_IOCP
3415 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
3416#endif
1474#if EV_USE_PORT 3417#if EV_USE_PORT
1475 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3418 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1476#endif 3419#endif
1477#if EV_USE_KQUEUE 3420#if EV_USE_KQUEUE
1478 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3421 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
3422#endif
3423#if EV_USE_IOURING
3424 if (backend == EVBACKEND_IOURING ) iouring_destroy (EV_A);
3425#endif
3426#if EV_USE_LINUXAIO
3427 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
1479#endif 3428#endif
1480#if EV_USE_EPOLL 3429#if EV_USE_EPOLL
1481 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3430 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
1482#endif 3431#endif
1483#if EV_USE_POLL 3432#if EV_USE_POLL
1484 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3433 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
1485#endif 3434#endif
1486#if EV_USE_SELECT 3435#if EV_USE_SELECT
1487 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3436 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
1488#endif 3437#endif
1489 3438
1490 for (i = NUMPRI; i--; ) 3439 for (i = NUMPRI; i--; )
1491 { 3440 {
1492 array_free (pending, [i]); 3441 array_free (pending, [i]);
1493#if EV_IDLE_ENABLE 3442#if EV_IDLE_ENABLE
1494 array_free (idle, [i]); 3443 array_free (idle, [i]);
1495#endif 3444#endif
1496 } 3445 }
1497 3446
1498 ev_free (anfds); anfdmax = 0; 3447 ev_free (anfds); anfds = 0; anfdmax = 0;
1499 3448
1500 /* have to use the microsoft-never-gets-it-right macro */ 3449 /* have to use the microsoft-never-gets-it-right macro */
1501 array_free (rfeed, EMPTY); 3450 array_free (rfeed, EMPTY);
1502 array_free (fdchange, EMPTY); 3451 array_free (fdchange, EMPTY);
1503 array_free (timer, EMPTY); 3452 array_free (timer, EMPTY);
… …
1505 array_free (periodic, EMPTY); 3454 array_free (periodic, EMPTY);
1506#endif 3455#endif
1507#if EV_FORK_ENABLE 3456#if EV_FORK_ENABLE
1508 array_free (fork, EMPTY); 3457 array_free (fork, EMPTY);
1509#endif 3458#endif
3459#if EV_CLEANUP_ENABLE
3460 array_free (cleanup, EMPTY);
3461#endif
1510 array_free (prepare, EMPTY); 3462 array_free (prepare, EMPTY);
1511 array_free (check, EMPTY); 3463 array_free (check, EMPTY);
1512#if EV_ASYNC_ENABLE 3464#if EV_ASYNC_ENABLE
1513 array_free (async, EMPTY); 3465 array_free (async, EMPTY);
1514#endif 3466#endif
1515 3467
1516 backend = 0; 3468 backend = 0;
3469
3470#if EV_MULTIPLICITY
3471 if (ev_is_default_loop (EV_A))
3472#endif
3473 ev_default_loop_ptr = 0;
3474#if EV_MULTIPLICITY
3475 else
3476 ev_free (EV_A);
3477#endif
1517} 3478}
1518 3479
1519#if EV_USE_INOTIFY 3480#if EV_USE_INOTIFY
1520inline_size void infy_fork (EV_P); 3481inline_size void infy_fork (EV_P);
1521#endif 3482#endif
1522 3483
1523inline_size void 3484inline_size void
1524loop_fork (EV_P) 3485loop_fork (EV_P)
1525{ 3486{
1526#if EV_USE_PORT 3487#if EV_USE_PORT
1527 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3488 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1528#endif 3489#endif
1529#if EV_USE_KQUEUE 3490#if EV_USE_KQUEUE
1530 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 3491 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
3492#endif
3493#if EV_USE_IOURING
3494 if (backend == EVBACKEND_IOURING ) iouring_fork (EV_A);
3495#endif
3496#if EV_USE_LINUXAIO
3497 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
1531#endif 3498#endif
1532#if EV_USE_EPOLL 3499#if EV_USE_EPOLL
1533 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3500 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
1534#endif 3501#endif
1535#if EV_USE_INOTIFY 3502#if EV_USE_INOTIFY
1536 infy_fork (EV_A); 3503 infy_fork (EV_A);
1537#endif 3504#endif
1538 3505
3506 if (postfork != 2)
3507 {
3508 #if EV_USE_SIGNALFD
3509 /* surprisingly, nothing needs to be done for signalfd, accoridng to docs, it does the right thing on fork */
3510 #endif
3511
3512 #if EV_USE_TIMERFD
3513 if (ev_is_active (&timerfd_w))
3514 {
3515 ev_ref (EV_A);
3516 ev_io_stop (EV_A_ &timerfd_w);
3517
3518 close (timerfd);
3519 timerfd = -2;
3520
3521 evtimerfd_init (EV_A);
3522 /* reschedule periodics, in case we missed something */
3523 ev_feed_event (EV_A_ &timerfd_w, EV_CUSTOM);
3524 }
3525 #endif
3526
3527 #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1539 if (ev_is_active (&pipe_w)) 3528 if (ev_is_active (&pipe_w))
1540 { 3529 {
1541 /* this "locks" the handlers against writing to the pipe */ 3530 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1542 /* while we modify the fd vars */ 3531
1543 gotsig = 1;
1544#if EV_ASYNC_ENABLE
1545 gotasync = 1;
1546#endif
1547
1548 ev_ref (EV_A); 3532 ev_ref (EV_A);
1549 ev_io_stop (EV_A_ &pipe_w); 3533 ev_io_stop (EV_A_ &pipe_w);
1550 3534
1551#if EV_USE_EVENTFD
1552 if (evfd >= 0)
1553 close (evfd);
1554#endif
1555
1556 if (evpipe [0] >= 0) 3535 if (evpipe [0] >= 0)
3536 EV_WIN32_CLOSE_FD (evpipe [0]);
1557 { 3537
1558 close (evpipe [0]); 3538 evpipe_init (EV_A);
1559 close (evpipe [1]); 3539 /* iterate over everything, in case we missed something before */
3540 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1560 } 3541 }
1561 3542 #endif
1562 evpipe_init (EV_A);
1563 /* now iterate over everything, in case we missed something */
1564 pipecb (EV_A_ &pipe_w, EV_READ);
1565 } 3543 }
1566 3544
1567 postfork = 0; 3545 postfork = 0;
1568} 3546}
1569 3547
1570#if EV_MULTIPLICITY 3548#if EV_MULTIPLICITY
1571 3549
3550ecb_cold
1572struct ev_loop * 3551struct ev_loop *
1573ev_loop_new (unsigned int flags) 3552ev_loop_new (unsigned int flags) EV_NOEXCEPT
1574{ 3553{
1575 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3554 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1576 3555
1577 memset (loop, 0, sizeof (struct ev_loop)); 3556 memset (EV_A, 0, sizeof (struct ev_loop));
1578
1579 loop_init (EV_A_ flags); 3557 loop_init (EV_A_ flags);
1580 3558
1581 if (ev_backend (EV_A)) 3559 if (ev_backend (EV_A))
1582 return loop; 3560 return EV_A;
1583 3561
3562 ev_free (EV_A);
1584 return 0; 3563 return 0;
1585} 3564}
1586 3565
1587void 3566#endif /* multiplicity */
1588ev_loop_destroy (EV_P)
1589{
1590 loop_destroy (EV_A);
1591 ev_free (loop);
1592}
1593
1594void
1595ev_loop_fork (EV_P)
1596{
1597 postfork = 1; /* must be in line with ev_default_fork */
1598}
1599 3567
1600#if EV_VERIFY 3568#if EV_VERIFY
1601static void noinline 3569ecb_noinline ecb_cold
3570static void
1602verify_watcher (EV_P_ W w) 3571verify_watcher (EV_P_ W w)
1603{ 3572{
1604 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3573 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1605 3574
1606 if (w->pending) 3575 if (w->pending)
1607 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3576 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1608} 3577}
1609 3578
1610static void noinline 3579ecb_noinline ecb_cold
3580static void
1611verify_heap (EV_P_ ANHE *heap, int N) 3581verify_heap (EV_P_ ANHE *heap, int N)
1612{ 3582{
1613 int i; 3583 int i;
1614 3584
1615 for (i = HEAP0; i < N + HEAP0; ++i) 3585 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1620 3590
1621 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3591 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1622 } 3592 }
1623} 3593}
1624 3594
1625static void noinline 3595ecb_noinline ecb_cold
3596static void
1626array_verify (EV_P_ W *ws, int cnt) 3597array_verify (EV_P_ W *ws, int cnt)
1627{ 3598{
1628 while (cnt--) 3599 while (cnt--)
1629 { 3600 {
1630 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3601 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1631 verify_watcher (EV_A_ ws [cnt]); 3602 verify_watcher (EV_A_ ws [cnt]);
1632 } 3603 }
1633} 3604}
1634#endif 3605#endif
1635 3606
1636void 3607#if EV_FEATURE_API
1637ev_loop_verify (EV_P) 3608void ecb_cold
3609ev_verify (EV_P) EV_NOEXCEPT
1638{ 3610{
1639#if EV_VERIFY 3611#if EV_VERIFY
1640 int i; 3612 int i;
1641 WL w; 3613 WL w, w2;
1642 3614
1643 assert (activecnt >= -1); 3615 assert (activecnt >= -1);
1644 3616
1645 assert (fdchangemax >= fdchangecnt); 3617 assert (fdchangemax >= fdchangecnt);
1646 for (i = 0; i < fdchangecnt; ++i) 3618 for (i = 0; i < fdchangecnt; ++i)
1647 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3619 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1648 3620
1649 assert (anfdmax >= 0); 3621 assert (anfdmax >= 0);
1650 for (i = 0; i < anfdmax; ++i) 3622 for (i = 0; i < anfdmax; ++i)
3623 {
3624 int j = 0;
3625
1651 for (w = anfds [i].head; w; w = w->next) 3626 for (w = w2 = anfds [i].head; w; w = w->next)
1652 { 3627 {
1653 verify_watcher (EV_A_ (W)w); 3628 verify_watcher (EV_A_ (W)w);
3629
3630 if (j++ & 1)
3631 {
3632 assert (("libev: io watcher list contains a loop", w != w2));
3633 w2 = w2->next;
3634 }
3635
1654 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3636 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1655 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 3637 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1656 } 3638 }
3639 }
1657 3640
1658 assert (timermax >= timercnt); 3641 assert (timermax >= timercnt);
1659 verify_heap (EV_A_ timers, timercnt); 3642 verify_heap (EV_A_ timers, timercnt);
1660 3643
1661#if EV_PERIODIC_ENABLE 3644#if EV_PERIODIC_ENABLE
… …
1676#if EV_FORK_ENABLE 3659#if EV_FORK_ENABLE
1677 assert (forkmax >= forkcnt); 3660 assert (forkmax >= forkcnt);
1678 array_verify (EV_A_ (W *)forks, forkcnt); 3661 array_verify (EV_A_ (W *)forks, forkcnt);
1679#endif 3662#endif
1680 3663
3664#if EV_CLEANUP_ENABLE
3665 assert (cleanupmax >= cleanupcnt);
3666 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
3667#endif
3668
1681#if EV_ASYNC_ENABLE 3669#if EV_ASYNC_ENABLE
1682 assert (asyncmax >= asynccnt); 3670 assert (asyncmax >= asynccnt);
1683 array_verify (EV_A_ (W *)asyncs, asynccnt); 3671 array_verify (EV_A_ (W *)asyncs, asynccnt);
1684#endif 3672#endif
1685 3673
3674#if EV_PREPARE_ENABLE
1686 assert (preparemax >= preparecnt); 3675 assert (preparemax >= preparecnt);
1687 array_verify (EV_A_ (W *)prepares, preparecnt); 3676 array_verify (EV_A_ (W *)prepares, preparecnt);
3677#endif
1688 3678
3679#if EV_CHECK_ENABLE
1689 assert (checkmax >= checkcnt); 3680 assert (checkmax >= checkcnt);
1690 array_verify (EV_A_ (W *)checks, checkcnt); 3681 array_verify (EV_A_ (W *)checks, checkcnt);
3682#endif
1691 3683
1692# if 0 3684# if 0
3685#if EV_CHILD_ENABLE
1693 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 3686 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1694 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 3687 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
3688#endif
1695# endif 3689# endif
1696#endif 3690#endif
1697} 3691}
1698 3692#endif
1699#endif /* multiplicity */
1700 3693
1701#if EV_MULTIPLICITY 3694#if EV_MULTIPLICITY
3695ecb_cold
1702struct ev_loop * 3696struct ev_loop *
1703ev_default_loop_init (unsigned int flags)
1704#else 3697#else
1705int 3698int
3699#endif
1706ev_default_loop (unsigned int flags) 3700ev_default_loop (unsigned int flags) EV_NOEXCEPT
1707#endif
1708{ 3701{
1709 if (!ev_default_loop_ptr) 3702 if (!ev_default_loop_ptr)
1710 { 3703 {
1711#if EV_MULTIPLICITY 3704#if EV_MULTIPLICITY
1712 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 3705 EV_P = ev_default_loop_ptr = &default_loop_struct;
1713#else 3706#else
1714 ev_default_loop_ptr = 1; 3707 ev_default_loop_ptr = 1;
1715#endif 3708#endif
1716 3709
1717 loop_init (EV_A_ flags); 3710 loop_init (EV_A_ flags);
1718 3711
1719 if (ev_backend (EV_A)) 3712 if (ev_backend (EV_A))
1720 { 3713 {
1721#ifndef _WIN32 3714#if EV_CHILD_ENABLE
1722 ev_signal_init (&childev, childcb, SIGCHLD); 3715 ev_signal_init (&childev, childcb, SIGCHLD);
1723 ev_set_priority (&childev, EV_MAXPRI); 3716 ev_set_priority (&childev, EV_MAXPRI);
1724 ev_signal_start (EV_A_ &childev); 3717 ev_signal_start (EV_A_ &childev);
1725 ev_unref (EV_A); /* child watcher should not keep loop alive */ 3718 ev_unref (EV_A); /* child watcher should not keep loop alive */
1726#endif 3719#endif
… …
1731 3724
1732 return ev_default_loop_ptr; 3725 return ev_default_loop_ptr;
1733} 3726}
1734 3727
1735void 3728void
1736ev_default_destroy (void) 3729ev_loop_fork (EV_P) EV_NOEXCEPT
1737{ 3730{
1738#if EV_MULTIPLICITY 3731 postfork = 1;
1739 struct ev_loop *loop = ev_default_loop_ptr;
1740#endif
1741
1742 ev_default_loop_ptr = 0;
1743
1744#ifndef _WIN32
1745 ev_ref (EV_A); /* child watcher */
1746 ev_signal_stop (EV_A_ &childev);
1747#endif
1748
1749 loop_destroy (EV_A);
1750}
1751
1752void
1753ev_default_fork (void)
1754{
1755#if EV_MULTIPLICITY
1756 struct ev_loop *loop = ev_default_loop_ptr;
1757#endif
1758
1759 postfork = 1; /* must be in line with ev_loop_fork */
1760} 3732}
1761 3733
1762/*****************************************************************************/ 3734/*****************************************************************************/
1763 3735
1764void 3736void
1765ev_invoke (EV_P_ void *w, int revents) 3737ev_invoke (EV_P_ void *w, int revents)
1766{ 3738{
1767 EV_CB_INVOKE ((W)w, revents); 3739 EV_CB_INVOKE ((W)w, revents);
1768} 3740}
1769 3741
1770inline_speed void 3742unsigned int
1771call_pending (EV_P) 3743ev_pending_count (EV_P) EV_NOEXCEPT
1772{ 3744{
1773 int pri; 3745 int pri;
3746 unsigned int count = 0;
1774 3747
1775 for (pri = NUMPRI; pri--; ) 3748 for (pri = NUMPRI; pri--; )
3749 count += pendingcnt [pri];
3750
3751 return count;
3752}
3753
3754ecb_noinline
3755void
3756ev_invoke_pending (EV_P)
3757{
3758 pendingpri = NUMPRI;
3759
3760 do
3761 {
3762 --pendingpri;
3763
3764 /* pendingpri possibly gets modified in the inner loop */
1776 while (pendingcnt [pri]) 3765 while (pendingcnt [pendingpri])
1777 { 3766 {
1778 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3767 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
1779 3768
1780 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1781 /* ^ this is no longer true, as pending_w could be here */
1782
1783 p->w->pending = 0; 3769 p->w->pending = 0;
1784 EV_CB_INVOKE (p->w, p->events); 3770 EV_CB_INVOKE (p->w, p->events);
1785 EV_FREQUENT_CHECK; 3771 EV_FREQUENT_CHECK;
1786 } 3772 }
3773 }
3774 while (pendingpri);
1787} 3775}
1788 3776
1789#if EV_IDLE_ENABLE 3777#if EV_IDLE_ENABLE
1790/* make idle watchers pending. this handles the "call-idle */ 3778/* make idle watchers pending. this handles the "call-idle */
1791/* only when higher priorities are idle" logic */ 3779/* only when higher priorities are idle" logic */
1792inline_size void 3780inline_size void
1793idle_reify (EV_P) 3781idle_reify (EV_P)
1794{ 3782{
1795 if (expect_false (idleall)) 3783 if (ecb_expect_false (idleall))
1796 { 3784 {
1797 int pri; 3785 int pri;
1798 3786
1799 for (pri = NUMPRI; pri--; ) 3787 for (pri = NUMPRI; pri--; )
1800 { 3788 {
… …
1830 { 3818 {
1831 ev_at (w) += w->repeat; 3819 ev_at (w) += w->repeat;
1832 if (ev_at (w) < mn_now) 3820 if (ev_at (w) < mn_now)
1833 ev_at (w) = mn_now; 3821 ev_at (w) = mn_now;
1834 3822
1835 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 3823 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > EV_TS_CONST (0.)));
1836 3824
1837 ANHE_at_cache (timers [HEAP0]); 3825 ANHE_at_cache (timers [HEAP0]);
1838 downheap (timers, timercnt, HEAP0); 3826 downheap (timers, timercnt, HEAP0);
1839 } 3827 }
1840 else 3828 else
… …
1843 EV_FREQUENT_CHECK; 3831 EV_FREQUENT_CHECK;
1844 feed_reverse (EV_A_ (W)w); 3832 feed_reverse (EV_A_ (W)w);
1845 } 3833 }
1846 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 3834 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1847 3835
1848 feed_reverse_done (EV_A_ EV_TIMEOUT); 3836 feed_reverse_done (EV_A_ EV_TIMER);
1849 } 3837 }
1850} 3838}
1851 3839
1852#if EV_PERIODIC_ENABLE 3840#if EV_PERIODIC_ENABLE
3841
3842ecb_noinline
3843static void
3844periodic_recalc (EV_P_ ev_periodic *w)
3845{
3846 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3847 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3848
3849 /* the above almost always errs on the low side */
3850 while (at <= ev_rt_now)
3851 {
3852 ev_tstamp nat = at + w->interval;
3853
3854 /* when resolution fails us, we use ev_rt_now */
3855 if (ecb_expect_false (nat == at))
3856 {
3857 at = ev_rt_now;
3858 break;
3859 }
3860
3861 at = nat;
3862 }
3863
3864 ev_at (w) = at;
3865}
3866
1853/* make periodics pending */ 3867/* make periodics pending */
1854inline_size void 3868inline_size void
1855periodics_reify (EV_P) 3869periodics_reify (EV_P)
1856{ 3870{
1857 EV_FREQUENT_CHECK; 3871 EV_FREQUENT_CHECK;
1858 3872
1859 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3873 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1860 { 3874 {
1861 int feed_count = 0;
1862
1863 do 3875 do
1864 { 3876 {
1865 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3877 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
1866 3878
1867 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3879 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
1876 ANHE_at_cache (periodics [HEAP0]); 3888 ANHE_at_cache (periodics [HEAP0]);
1877 downheap (periodics, periodiccnt, HEAP0); 3889 downheap (periodics, periodiccnt, HEAP0);
1878 } 3890 }
1879 else if (w->interval) 3891 else if (w->interval)
1880 { 3892 {
1881 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3893 periodic_recalc (EV_A_ w);
1882 /* if next trigger time is not sufficiently in the future, put it there */
1883 /* this might happen because of floating point inexactness */
1884 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1885 {
1886 ev_at (w) += w->interval;
1887
1888 /* if interval is unreasonably low we might still have a time in the past */
1889 /* so correct this. this will make the periodic very inexact, but the user */
1890 /* has effectively asked to get triggered more often than possible */
1891 if (ev_at (w) < ev_rt_now)
1892 ev_at (w) = ev_rt_now;
1893 }
1894
1895 ANHE_at_cache (periodics [HEAP0]); 3894 ANHE_at_cache (periodics [HEAP0]);
1896 downheap (periodics, periodiccnt, HEAP0); 3895 downheap (periodics, periodiccnt, HEAP0);
1897 } 3896 }
1898 else 3897 else
1899 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3898 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
1906 feed_reverse_done (EV_A_ EV_PERIODIC); 3905 feed_reverse_done (EV_A_ EV_PERIODIC);
1907 } 3906 }
1908} 3907}
1909 3908
1910/* simply recalculate all periodics */ 3909/* simply recalculate all periodics */
1911/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 3910/* TODO: maybe ensure that at least one event happens when jumping forward? */
1912static void noinline 3911ecb_noinline ecb_cold
3912static void
1913periodics_reschedule (EV_P) 3913periodics_reschedule (EV_P)
1914{ 3914{
1915 int i; 3915 int i;
1916 3916
1917 /* adjust periodics after time jump */ 3917 /* adjust periodics after time jump */
… …
1920 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3920 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1921 3921
1922 if (w->reschedule_cb) 3922 if (w->reschedule_cb)
1923 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3923 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1924 else if (w->interval) 3924 else if (w->interval)
1925 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3925 periodic_recalc (EV_A_ w);
1926 3926
1927 ANHE_at_cache (periodics [i]); 3927 ANHE_at_cache (periodics [i]);
1928 } 3928 }
1929 3929
1930 reheap (periodics, periodiccnt); 3930 reheap (periodics, periodiccnt);
1931} 3931}
1932#endif 3932#endif
1933 3933
1934/* adjust all timers by a given offset */ 3934/* adjust all timers by a given offset */
1935static void noinline 3935ecb_noinline ecb_cold
3936static void
1936timers_reschedule (EV_P_ ev_tstamp adjust) 3937timers_reschedule (EV_P_ ev_tstamp adjust)
1937{ 3938{
1938 int i; 3939 int i;
1939 3940
1940 for (i = 0; i < timercnt; ++i) 3941 for (i = 0; i < timercnt; ++i)
… …
1944 ANHE_at_cache (*he); 3945 ANHE_at_cache (*he);
1945 } 3946 }
1946} 3947}
1947 3948
1948/* fetch new monotonic and realtime times from the kernel */ 3949/* fetch new monotonic and realtime times from the kernel */
1949/* also detetc if there was a timejump, and act accordingly */ 3950/* also detect if there was a timejump, and act accordingly */
1950inline_speed void 3951inline_speed void
1951time_update (EV_P_ ev_tstamp max_block) 3952time_update (EV_P_ ev_tstamp max_block)
1952{ 3953{
1953 int i;
1954
1955#if EV_USE_MONOTONIC 3954#if EV_USE_MONOTONIC
1956 if (expect_true (have_monotonic)) 3955 if (ecb_expect_true (have_monotonic))
1957 { 3956 {
3957 int i;
1958 ev_tstamp odiff = rtmn_diff; 3958 ev_tstamp odiff = rtmn_diff;
1959 3959
1960 mn_now = get_clock (); 3960 mn_now = get_clock ();
1961 3961
1962 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3962 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
1963 /* interpolate in the meantime */ 3963 /* interpolate in the meantime */
1964 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 3964 if (ecb_expect_true (mn_now - now_floor < EV_TS_CONST (MIN_TIMEJUMP * .5)))
1965 { 3965 {
1966 ev_rt_now = rtmn_diff + mn_now; 3966 ev_rt_now = rtmn_diff + mn_now;
1967 return; 3967 return;
1968 } 3968 }
1969 3969
… …
1978 * doesn't hurt either as we only do this on time-jumps or 3978 * doesn't hurt either as we only do this on time-jumps or
1979 * in the unlikely event of having been preempted here. 3979 * in the unlikely event of having been preempted here.
1980 */ 3980 */
1981 for (i = 4; --i; ) 3981 for (i = 4; --i; )
1982 { 3982 {
3983 ev_tstamp diff;
1983 rtmn_diff = ev_rt_now - mn_now; 3984 rtmn_diff = ev_rt_now - mn_now;
1984 3985
1985 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3986 diff = odiff - rtmn_diff;
3987
3988 if (ecb_expect_true ((diff < EV_TS_CONST (0.) ? -diff : diff) < EV_TS_CONST (MIN_TIMEJUMP)))
1986 return; /* all is well */ 3989 return; /* all is well */
1987 3990
1988 ev_rt_now = ev_time (); 3991 ev_rt_now = ev_time ();
1989 mn_now = get_clock (); 3992 mn_now = get_clock ();
1990 now_floor = mn_now; 3993 now_floor = mn_now;
… …
1999 else 4002 else
2000#endif 4003#endif
2001 { 4004 {
2002 ev_rt_now = ev_time (); 4005 ev_rt_now = ev_time ();
2003 4006
2004 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 4007 if (ecb_expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + EV_TS_CONST (MIN_TIMEJUMP)))
2005 { 4008 {
2006 /* adjust timers. this is easy, as the offset is the same for all of them */ 4009 /* adjust timers. this is easy, as the offset is the same for all of them */
2007 timers_reschedule (EV_A_ ev_rt_now - mn_now); 4010 timers_reschedule (EV_A_ ev_rt_now - mn_now);
2008#if EV_PERIODIC_ENABLE 4011#if EV_PERIODIC_ENABLE
2009 periodics_reschedule (EV_A); 4012 periodics_reschedule (EV_A);
… …
2012 4015
2013 mn_now = ev_rt_now; 4016 mn_now = ev_rt_now;
2014 } 4017 }
2015} 4018}
2016 4019
2017static int loop_done; 4020int
2018
2019void
2020ev_loop (EV_P_ int flags) 4021ev_run (EV_P_ int flags)
2021{ 4022{
4023#if EV_FEATURE_API
4024 ++loop_depth;
4025#endif
4026
4027 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
4028
2022 loop_done = EVUNLOOP_CANCEL; 4029 loop_done = EVBREAK_CANCEL;
2023 4030
2024 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 4031 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2025 4032
2026 do 4033 do
2027 { 4034 {
2028#if EV_VERIFY >= 2 4035#if EV_VERIFY >= 2
2029 ev_loop_verify (EV_A); 4036 ev_verify (EV_A);
2030#endif 4037#endif
2031 4038
2032#ifndef _WIN32 4039#ifndef _WIN32
2033 if (expect_false (curpid)) /* penalise the forking check even more */ 4040 if (ecb_expect_false (curpid)) /* penalise the forking check even more */
2034 if (expect_false (getpid () != curpid)) 4041 if (ecb_expect_false (getpid () != curpid))
2035 { 4042 {
2036 curpid = getpid (); 4043 curpid = getpid ();
2037 postfork = 1; 4044 postfork = 1;
2038 } 4045 }
2039#endif 4046#endif
2040 4047
2041#if EV_FORK_ENABLE 4048#if EV_FORK_ENABLE
2042 /* we might have forked, so queue fork handlers */ 4049 /* we might have forked, so queue fork handlers */
2043 if (expect_false (postfork)) 4050 if (ecb_expect_false (postfork))
2044 if (forkcnt) 4051 if (forkcnt)
2045 { 4052 {
2046 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 4053 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2047 call_pending (EV_A); 4054 EV_INVOKE_PENDING;
2048 } 4055 }
2049#endif 4056#endif
2050 4057
4058#if EV_PREPARE_ENABLE
2051 /* queue prepare watchers (and execute them) */ 4059 /* queue prepare watchers (and execute them) */
2052 if (expect_false (preparecnt)) 4060 if (ecb_expect_false (preparecnt))
2053 { 4061 {
2054 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 4062 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2055 call_pending (EV_A); 4063 EV_INVOKE_PENDING;
2056 } 4064 }
4065#endif
4066
4067 if (ecb_expect_false (loop_done))
4068 break;
2057 4069
2058 /* we might have forked, so reify kernel state if necessary */ 4070 /* we might have forked, so reify kernel state if necessary */
2059 if (expect_false (postfork)) 4071 if (ecb_expect_false (postfork))
2060 loop_fork (EV_A); 4072 loop_fork (EV_A);
2061 4073
2062 /* update fd-related kernel structures */ 4074 /* update fd-related kernel structures */
2063 fd_reify (EV_A); 4075 fd_reify (EV_A);
2064 4076
2065 /* calculate blocking time */ 4077 /* calculate blocking time */
2066 { 4078 {
2067 ev_tstamp waittime = 0.; 4079 ev_tstamp waittime = 0.;
2068 ev_tstamp sleeptime = 0.; 4080 ev_tstamp sleeptime = 0.;
2069 4081
4082 /* remember old timestamp for io_blocktime calculation */
4083 ev_tstamp prev_mn_now = mn_now;
4084
4085 /* update time to cancel out callback processing overhead */
4086 time_update (EV_A_ EV_TS_CONST (EV_TSTAMP_HUGE));
4087
4088 /* from now on, we want a pipe-wake-up */
4089 pipe_write_wanted = 1;
4090
4091 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
4092
2070 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 4093 if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2071 { 4094 {
2072 /* update time to cancel out callback processing overhead */
2073 time_update (EV_A_ 1e100);
2074
2075 waittime = MAX_BLOCKTIME; 4095 waittime = EV_TS_CONST (MAX_BLOCKTIME);
4096
4097 if (ecb_expect_true (have_monotonic))
4098 {
4099#if EV_USE_TIMERFD
4100 /* sleep a lot longer when we can reliably detect timejumps */
4101 if (ecb_expect_true (timerfd != -1))
4102 waittime = EV_TS_CONST (MAX_BLOCKTIME2);
4103#endif
4104#if !EV_PERIODIC_ENABLE
4105 /* without periodics but with monotonic clock there is no need */
4106 /* for any time jump detection, so sleep longer */
4107 waittime = EV_TS_CONST (MAX_BLOCKTIME2);
4108#endif
4109 }
2076 4110
2077 if (timercnt) 4111 if (timercnt)
2078 { 4112 {
2079 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 4113 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2080 if (waittime > to) waittime = to; 4114 if (waittime > to) waittime = to;
2081 } 4115 }
2082 4116
2083#if EV_PERIODIC_ENABLE 4117#if EV_PERIODIC_ENABLE
2084 if (periodiccnt) 4118 if (periodiccnt)
2085 { 4119 {
2086 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 4120 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2087 if (waittime > to) waittime = to; 4121 if (waittime > to) waittime = to;
2088 } 4122 }
2089#endif 4123#endif
2090 4124
4125 /* don't let timeouts decrease the waittime below timeout_blocktime */
2091 if (expect_false (waittime < timeout_blocktime)) 4126 if (ecb_expect_false (waittime < timeout_blocktime))
2092 waittime = timeout_blocktime; 4127 waittime = timeout_blocktime;
2093 4128
2094 sleeptime = waittime - backend_fudge; 4129 /* now there are two more special cases left, either we have
4130 * already-expired timers, so we should not sleep, or we have timers
4131 * that expire very soon, in which case we need to wait for a minimum
4132 * amount of time for some event loop backends.
4133 */
4134 if (ecb_expect_false (waittime < backend_mintime))
4135 waittime = waittime <= EV_TS_CONST (0.)
4136 ? EV_TS_CONST (0.)
4137 : backend_mintime;
2095 4138
4139 /* extra check because io_blocktime is commonly 0 */
2096 if (expect_true (sleeptime > io_blocktime)) 4140 if (ecb_expect_false (io_blocktime))
2097 sleeptime = io_blocktime;
2098
2099 if (sleeptime)
2100 { 4141 {
4142 sleeptime = io_blocktime - (mn_now - prev_mn_now);
4143
4144 if (sleeptime > waittime - backend_mintime)
4145 sleeptime = waittime - backend_mintime;
4146
4147 if (ecb_expect_true (sleeptime > EV_TS_CONST (0.)))
4148 {
2101 ev_sleep (sleeptime); 4149 ev_sleep (sleeptime);
2102 waittime -= sleeptime; 4150 waittime -= sleeptime;
4151 }
2103 } 4152 }
2104 } 4153 }
2105 4154
4155#if EV_FEATURE_API
2106 ++loop_count; 4156 ++loop_count;
4157#endif
4158 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2107 backend_poll (EV_A_ waittime); 4159 backend_poll (EV_A_ waittime);
4160 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
4161
4162 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
4163
4164 ECB_MEMORY_FENCE_ACQUIRE;
4165 if (pipe_write_skipped)
4166 {
4167 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
4168 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
4169 }
2108 4170
2109 /* update ev_rt_now, do magic */ 4171 /* update ev_rt_now, do magic */
2110 time_update (EV_A_ waittime + sleeptime); 4172 time_update (EV_A_ waittime + sleeptime);
2111 } 4173 }
2112 4174
… …
2119#if EV_IDLE_ENABLE 4181#if EV_IDLE_ENABLE
2120 /* queue idle watchers unless other events are pending */ 4182 /* queue idle watchers unless other events are pending */
2121 idle_reify (EV_A); 4183 idle_reify (EV_A);
2122#endif 4184#endif
2123 4185
4186#if EV_CHECK_ENABLE
2124 /* queue check watchers, to be executed first */ 4187 /* queue check watchers, to be executed first */
2125 if (expect_false (checkcnt)) 4188 if (ecb_expect_false (checkcnt))
2126 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 4189 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
4190#endif
2127 4191
2128 call_pending (EV_A); 4192 EV_INVOKE_PENDING;
2129 } 4193 }
2130 while (expect_true ( 4194 while (ecb_expect_true (
2131 activecnt 4195 activecnt
2132 && !loop_done 4196 && !loop_done
2133 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 4197 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2134 )); 4198 ));
2135 4199
2136 if (loop_done == EVUNLOOP_ONE) 4200 if (loop_done == EVBREAK_ONE)
2137 loop_done = EVUNLOOP_CANCEL; 4201 loop_done = EVBREAK_CANCEL;
4202
4203#if EV_FEATURE_API
4204 --loop_depth;
4205#endif
4206
4207 return activecnt;
2138} 4208}
2139 4209
2140void 4210void
2141ev_unloop (EV_P_ int how) 4211ev_break (EV_P_ int how) EV_NOEXCEPT
2142{ 4212{
2143 loop_done = how; 4213 loop_done = how;
2144} 4214}
2145 4215
2146void 4216void
2147ev_ref (EV_P) 4217ev_ref (EV_P) EV_NOEXCEPT
2148{ 4218{
2149 ++activecnt; 4219 ++activecnt;
2150} 4220}
2151 4221
2152void 4222void
2153ev_unref (EV_P) 4223ev_unref (EV_P) EV_NOEXCEPT
2154{ 4224{
2155 --activecnt; 4225 --activecnt;
2156} 4226}
2157 4227
2158void 4228void
2159ev_now_update (EV_P) 4229ev_now_update (EV_P) EV_NOEXCEPT
2160{ 4230{
2161 time_update (EV_A_ 1e100); 4231 time_update (EV_A_ EV_TSTAMP_HUGE);
2162} 4232}
2163 4233
2164void 4234void
2165ev_suspend (EV_P) 4235ev_suspend (EV_P) EV_NOEXCEPT
2166{ 4236{
2167 ev_now_update (EV_A); 4237 ev_now_update (EV_A);
2168} 4238}
2169 4239
2170void 4240void
2171ev_resume (EV_P) 4241ev_resume (EV_P) EV_NOEXCEPT
2172{ 4242{
2173 ev_tstamp mn_prev = mn_now; 4243 ev_tstamp mn_prev = mn_now;
2174 4244
2175 ev_now_update (EV_A); 4245 ev_now_update (EV_A);
2176 timers_reschedule (EV_A_ mn_now - mn_prev); 4246 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2193inline_size void 4263inline_size void
2194wlist_del (WL *head, WL elem) 4264wlist_del (WL *head, WL elem)
2195{ 4265{
2196 while (*head) 4266 while (*head)
2197 { 4267 {
2198 if (*head == elem) 4268 if (ecb_expect_true (*head == elem))
2199 { 4269 {
2200 *head = elem->next; 4270 *head = elem->next;
2201 return; 4271 break;
2202 } 4272 }
2203 4273
2204 head = &(*head)->next; 4274 head = &(*head)->next;
2205 } 4275 }
2206} 4276}
… …
2215 w->pending = 0; 4285 w->pending = 0;
2216 } 4286 }
2217} 4287}
2218 4288
2219int 4289int
2220ev_clear_pending (EV_P_ void *w) 4290ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
2221{ 4291{
2222 W w_ = (W)w; 4292 W w_ = (W)w;
2223 int pending = w_->pending; 4293 int pending = w_->pending;
2224 4294
2225 if (expect_true (pending)) 4295 if (ecb_expect_true (pending))
2226 { 4296 {
2227 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 4297 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2228 p->w = (W)&pending_w; 4298 p->w = (W)&pending_w;
2229 w_->pending = 0; 4299 w_->pending = 0;
2230 return p->events; 4300 return p->events;
… …
2234} 4304}
2235 4305
2236inline_size void 4306inline_size void
2237pri_adjust (EV_P_ W w) 4307pri_adjust (EV_P_ W w)
2238{ 4308{
2239 int pri = w->priority; 4309 int pri = ev_priority (w);
2240 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 4310 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2241 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 4311 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2242 w->priority = pri; 4312 ev_set_priority (w, pri);
2243} 4313}
2244 4314
2245inline_speed void 4315inline_speed void
2246ev_start (EV_P_ W w, int active) 4316ev_start (EV_P_ W w, int active)
2247{ 4317{
… …
2257 w->active = 0; 4327 w->active = 0;
2258} 4328}
2259 4329
2260/*****************************************************************************/ 4330/*****************************************************************************/
2261 4331
2262void noinline 4332ecb_noinline
4333void
2263ev_io_start (EV_P_ ev_io *w) 4334ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
2264{ 4335{
2265 int fd = w->fd; 4336 int fd = w->fd;
2266 4337
2267 if (expect_false (ev_is_active (w))) 4338 if (ecb_expect_false (ev_is_active (w)))
2268 return; 4339 return;
2269 4340
2270 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 4341 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2271 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 4342 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2272 4343
4344#if EV_VERIFY >= 2
4345 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
4346#endif
2273 EV_FREQUENT_CHECK; 4347 EV_FREQUENT_CHECK;
2274 4348
2275 ev_start (EV_A_ (W)w, 1); 4349 ev_start (EV_A_ (W)w, 1);
2276 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 4350 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
2277 wlist_add (&anfds[fd].head, (WL)w); 4351 wlist_add (&anfds[fd].head, (WL)w);
2278 4352
4353 /* common bug, apparently */
4354 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
4355
2279 fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1); 4356 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2280 w->events &= ~EV__IOFDSET; 4357 w->events &= ~EV__IOFDSET;
2281 4358
2282 EV_FREQUENT_CHECK; 4359 EV_FREQUENT_CHECK;
2283} 4360}
2284 4361
2285void noinline 4362ecb_noinline
4363void
2286ev_io_stop (EV_P_ ev_io *w) 4364ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
2287{ 4365{
2288 clear_pending (EV_A_ (W)w); 4366 clear_pending (EV_A_ (W)w);
2289 if (expect_false (!ev_is_active (w))) 4367 if (ecb_expect_false (!ev_is_active (w)))
2290 return; 4368 return;
2291 4369
2292 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 4370 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2293 4371
4372#if EV_VERIFY >= 2
4373 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
4374#endif
2294 EV_FREQUENT_CHECK; 4375 EV_FREQUENT_CHECK;
2295 4376
2296 wlist_del (&anfds[w->fd].head, (WL)w); 4377 wlist_del (&anfds[w->fd].head, (WL)w);
2297 ev_stop (EV_A_ (W)w); 4378 ev_stop (EV_A_ (W)w);
2298 4379
2299 fd_change (EV_A_ w->fd, 1); 4380 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2300 4381
2301 EV_FREQUENT_CHECK; 4382 EV_FREQUENT_CHECK;
2302} 4383}
2303 4384
2304void noinline 4385ecb_noinline
4386void
2305ev_timer_start (EV_P_ ev_timer *w) 4387ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
2306{ 4388{
2307 if (expect_false (ev_is_active (w))) 4389 if (ecb_expect_false (ev_is_active (w)))
2308 return; 4390 return;
2309 4391
2310 ev_at (w) += mn_now; 4392 ev_at (w) += mn_now;
2311 4393
2312 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 4394 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2313 4395
2314 EV_FREQUENT_CHECK; 4396 EV_FREQUENT_CHECK;
2315 4397
2316 ++timercnt; 4398 ++timercnt;
2317 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 4399 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
2318 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 4400 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
2319 ANHE_w (timers [ev_active (w)]) = (WT)w; 4401 ANHE_w (timers [ev_active (w)]) = (WT)w;
2320 ANHE_at_cache (timers [ev_active (w)]); 4402 ANHE_at_cache (timers [ev_active (w)]);
2321 upheap (timers, ev_active (w)); 4403 upheap (timers, ev_active (w));
2322 4404
2323 EV_FREQUENT_CHECK; 4405 EV_FREQUENT_CHECK;
2324 4406
2325 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 4407 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2326} 4408}
2327 4409
2328void noinline 4410ecb_noinline
4411void
2329ev_timer_stop (EV_P_ ev_timer *w) 4412ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
2330{ 4413{
2331 clear_pending (EV_A_ (W)w); 4414 clear_pending (EV_A_ (W)w);
2332 if (expect_false (!ev_is_active (w))) 4415 if (ecb_expect_false (!ev_is_active (w)))
2333 return; 4416 return;
2334 4417
2335 EV_FREQUENT_CHECK; 4418 EV_FREQUENT_CHECK;
2336 4419
2337 { 4420 {
… …
2339 4422
2340 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 4423 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2341 4424
2342 --timercnt; 4425 --timercnt;
2343 4426
2344 if (expect_true (active < timercnt + HEAP0)) 4427 if (ecb_expect_true (active < timercnt + HEAP0))
2345 { 4428 {
2346 timers [active] = timers [timercnt + HEAP0]; 4429 timers [active] = timers [timercnt + HEAP0];
2347 adjustheap (timers, timercnt, active); 4430 adjustheap (timers, timercnt, active);
2348 } 4431 }
2349 } 4432 }
2350 4433
4434 ev_at (w) -= mn_now;
4435
4436 ev_stop (EV_A_ (W)w);
4437
2351 EV_FREQUENT_CHECK; 4438 EV_FREQUENT_CHECK;
2352
2353 ev_at (w) -= mn_now;
2354
2355 ev_stop (EV_A_ (W)w);
2356} 4439}
2357 4440
2358void noinline 4441ecb_noinline
4442void
2359ev_timer_again (EV_P_ ev_timer *w) 4443ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
2360{ 4444{
2361 EV_FREQUENT_CHECK; 4445 EV_FREQUENT_CHECK;
4446
4447 clear_pending (EV_A_ (W)w);
2362 4448
2363 if (ev_is_active (w)) 4449 if (ev_is_active (w))
2364 { 4450 {
2365 if (w->repeat) 4451 if (w->repeat)
2366 { 4452 {
… …
2378 } 4464 }
2379 4465
2380 EV_FREQUENT_CHECK; 4466 EV_FREQUENT_CHECK;
2381} 4467}
2382 4468
4469ev_tstamp
4470ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
4471{
4472 return ev_at (w) - (ev_is_active (w) ? mn_now : EV_TS_CONST (0.));
4473}
4474
2383#if EV_PERIODIC_ENABLE 4475#if EV_PERIODIC_ENABLE
2384void noinline 4476ecb_noinline
4477void
2385ev_periodic_start (EV_P_ ev_periodic *w) 4478ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
2386{ 4479{
2387 if (expect_false (ev_is_active (w))) 4480 if (ecb_expect_false (ev_is_active (w)))
2388 return; 4481 return;
4482
4483#if EV_USE_TIMERFD
4484 if (timerfd == -2)
4485 evtimerfd_init (EV_A);
4486#endif
2389 4487
2390 if (w->reschedule_cb) 4488 if (w->reschedule_cb)
2391 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4489 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2392 else if (w->interval) 4490 else if (w->interval)
2393 { 4491 {
2394 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 4492 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2395 /* this formula differs from the one in periodic_reify because we do not always round up */ 4493 periodic_recalc (EV_A_ w);
2396 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2397 } 4494 }
2398 else 4495 else
2399 ev_at (w) = w->offset; 4496 ev_at (w) = w->offset;
2400 4497
2401 EV_FREQUENT_CHECK; 4498 EV_FREQUENT_CHECK;
2402 4499
2403 ++periodiccnt; 4500 ++periodiccnt;
2404 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4501 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2405 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4502 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
2406 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4503 ANHE_w (periodics [ev_active (w)]) = (WT)w;
2407 ANHE_at_cache (periodics [ev_active (w)]); 4504 ANHE_at_cache (periodics [ev_active (w)]);
2408 upheap (periodics, ev_active (w)); 4505 upheap (periodics, ev_active (w));
2409 4506
2410 EV_FREQUENT_CHECK; 4507 EV_FREQUENT_CHECK;
2411 4508
2412 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4509 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2413} 4510}
2414 4511
2415void noinline 4512ecb_noinline
4513void
2416ev_periodic_stop (EV_P_ ev_periodic *w) 4514ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
2417{ 4515{
2418 clear_pending (EV_A_ (W)w); 4516 clear_pending (EV_A_ (W)w);
2419 if (expect_false (!ev_is_active (w))) 4517 if (ecb_expect_false (!ev_is_active (w)))
2420 return; 4518 return;
2421 4519
2422 EV_FREQUENT_CHECK; 4520 EV_FREQUENT_CHECK;
2423 4521
2424 { 4522 {
… …
2426 4524
2427 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 4525 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2428 4526
2429 --periodiccnt; 4527 --periodiccnt;
2430 4528
2431 if (expect_true (active < periodiccnt + HEAP0)) 4529 if (ecb_expect_true (active < periodiccnt + HEAP0))
2432 { 4530 {
2433 periodics [active] = periodics [periodiccnt + HEAP0]; 4531 periodics [active] = periodics [periodiccnt + HEAP0];
2434 adjustheap (periodics, periodiccnt, active); 4532 adjustheap (periodics, periodiccnt, active);
2435 } 4533 }
2436 } 4534 }
2437 4535
4536 ev_stop (EV_A_ (W)w);
4537
2438 EV_FREQUENT_CHECK; 4538 EV_FREQUENT_CHECK;
2439
2440 ev_stop (EV_A_ (W)w);
2441} 4539}
2442 4540
2443void noinline 4541ecb_noinline
4542void
2444ev_periodic_again (EV_P_ ev_periodic *w) 4543ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
2445{ 4544{
2446 /* TODO: use adjustheap and recalculation */ 4545 /* TODO: use adjustheap and recalculation */
2447 ev_periodic_stop (EV_A_ w); 4546 ev_periodic_stop (EV_A_ w);
2448 ev_periodic_start (EV_A_ w); 4547 ev_periodic_start (EV_A_ w);
2449} 4548}
… …
2451 4550
2452#ifndef SA_RESTART 4551#ifndef SA_RESTART
2453# define SA_RESTART 0 4552# define SA_RESTART 0
2454#endif 4553#endif
2455 4554
2456void noinline 4555#if EV_SIGNAL_ENABLE
4556
4557ecb_noinline
4558void
2457ev_signal_start (EV_P_ ev_signal *w) 4559ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
2458{ 4560{
4561 if (ecb_expect_false (ev_is_active (w)))
4562 return;
4563
4564 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
4565
2459#if EV_MULTIPLICITY 4566#if EV_MULTIPLICITY
2460 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4567 assert (("libev: a signal must not be attached to two different loops",
2461#endif 4568 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2462 if (expect_false (ev_is_active (w)))
2463 return;
2464 4569
2465 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0)); 4570 signals [w->signum - 1].loop = EV_A;
2466 4571 ECB_MEMORY_FENCE_RELEASE;
2467 evpipe_init (EV_A); 4572#endif
2468 4573
2469 EV_FREQUENT_CHECK; 4574 EV_FREQUENT_CHECK;
2470 4575
4576#if EV_USE_SIGNALFD
4577 if (sigfd == -2)
2471 { 4578 {
2472#ifndef _WIN32 4579 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2473 sigset_t full, prev; 4580 if (sigfd < 0 && errno == EINVAL)
2474 sigfillset (&full); 4581 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2475 sigprocmask (SIG_SETMASK, &full, &prev);
2476#endif
2477 4582
2478 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); 4583 if (sigfd >= 0)
4584 {
4585 fd_intern (sigfd); /* doing it twice will not hurt */
2479 4586
2480#ifndef _WIN32 4587 sigemptyset (&sigfd_set);
2481 sigprocmask (SIG_SETMASK, &prev, 0); 4588
2482#endif 4589 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
4590 ev_set_priority (&sigfd_w, EV_MAXPRI);
4591 ev_io_start (EV_A_ &sigfd_w);
4592 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
4593 }
2483 } 4594 }
4595
4596 if (sigfd >= 0)
4597 {
4598 /* TODO: check .head */
4599 sigaddset (&sigfd_set, w->signum);
4600 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
4601
4602 signalfd (sigfd, &sigfd_set, 0);
4603 }
4604#endif
2484 4605
2485 ev_start (EV_A_ (W)w, 1); 4606 ev_start (EV_A_ (W)w, 1);
2486 wlist_add (&signals [w->signum - 1].head, (WL)w); 4607 wlist_add (&signals [w->signum - 1].head, (WL)w);
2487 4608
2488 if (!((WL)w)->next) 4609 if (!((WL)w)->next)
4610# if EV_USE_SIGNALFD
4611 if (sigfd < 0) /*TODO*/
4612# endif
2489 { 4613 {
2490#if _WIN32 4614# ifdef _WIN32
4615 evpipe_init (EV_A);
4616
2491 signal (w->signum, ev_sighandler); 4617 signal (w->signum, ev_sighandler);
2492#else 4618# else
2493 struct sigaction sa; 4619 struct sigaction sa;
4620
4621 evpipe_init (EV_A);
4622
2494 sa.sa_handler = ev_sighandler; 4623 sa.sa_handler = ev_sighandler;
2495 sigfillset (&sa.sa_mask); 4624 sigfillset (&sa.sa_mask);
2496 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 4625 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2497 sigaction (w->signum, &sa, 0); 4626 sigaction (w->signum, &sa, 0);
4627
4628 if (origflags & EVFLAG_NOSIGMASK)
4629 {
4630 sigemptyset (&sa.sa_mask);
4631 sigaddset (&sa.sa_mask, w->signum);
4632 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
4633 }
2498#endif 4634#endif
2499 } 4635 }
2500 4636
2501 EV_FREQUENT_CHECK; 4637 EV_FREQUENT_CHECK;
2502} 4638}
2503 4639
2504void noinline 4640ecb_noinline
4641void
2505ev_signal_stop (EV_P_ ev_signal *w) 4642ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
2506{ 4643{
2507 clear_pending (EV_A_ (W)w); 4644 clear_pending (EV_A_ (W)w);
2508 if (expect_false (!ev_is_active (w))) 4645 if (ecb_expect_false (!ev_is_active (w)))
2509 return; 4646 return;
2510 4647
2511 EV_FREQUENT_CHECK; 4648 EV_FREQUENT_CHECK;
2512 4649
2513 wlist_del (&signals [w->signum - 1].head, (WL)w); 4650 wlist_del (&signals [w->signum - 1].head, (WL)w);
2514 ev_stop (EV_A_ (W)w); 4651 ev_stop (EV_A_ (W)w);
2515 4652
2516 if (!signals [w->signum - 1].head) 4653 if (!signals [w->signum - 1].head)
4654 {
4655#if EV_MULTIPLICITY
4656 signals [w->signum - 1].loop = 0; /* unattach from signal */
4657#endif
4658#if EV_USE_SIGNALFD
4659 if (sigfd >= 0)
4660 {
4661 sigset_t ss;
4662
4663 sigemptyset (&ss);
4664 sigaddset (&ss, w->signum);
4665 sigdelset (&sigfd_set, w->signum);
4666
4667 signalfd (sigfd, &sigfd_set, 0);
4668 sigprocmask (SIG_UNBLOCK, &ss, 0);
4669 }
4670 else
4671#endif
2517 signal (w->signum, SIG_DFL); 4672 signal (w->signum, SIG_DFL);
4673 }
2518 4674
2519 EV_FREQUENT_CHECK; 4675 EV_FREQUENT_CHECK;
2520} 4676}
2521 4677
4678#endif
4679
4680#if EV_CHILD_ENABLE
4681
2522void 4682void
2523ev_child_start (EV_P_ ev_child *w) 4683ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
2524{ 4684{
2525#if EV_MULTIPLICITY 4685#if EV_MULTIPLICITY
2526 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4686 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2527#endif 4687#endif
2528 if (expect_false (ev_is_active (w))) 4688 if (ecb_expect_false (ev_is_active (w)))
2529 return; 4689 return;
2530 4690
2531 EV_FREQUENT_CHECK; 4691 EV_FREQUENT_CHECK;
2532 4692
2533 ev_start (EV_A_ (W)w, 1); 4693 ev_start (EV_A_ (W)w, 1);
2534 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4694 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2535 4695
2536 EV_FREQUENT_CHECK; 4696 EV_FREQUENT_CHECK;
2537} 4697}
2538 4698
2539void 4699void
2540ev_child_stop (EV_P_ ev_child *w) 4700ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
2541{ 4701{
2542 clear_pending (EV_A_ (W)w); 4702 clear_pending (EV_A_ (W)w);
2543 if (expect_false (!ev_is_active (w))) 4703 if (ecb_expect_false (!ev_is_active (w)))
2544 return; 4704 return;
2545 4705
2546 EV_FREQUENT_CHECK; 4706 EV_FREQUENT_CHECK;
2547 4707
2548 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4708 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2549 ev_stop (EV_A_ (W)w); 4709 ev_stop (EV_A_ (W)w);
2550 4710
2551 EV_FREQUENT_CHECK; 4711 EV_FREQUENT_CHECK;
2552} 4712}
4713
4714#endif
2553 4715
2554#if EV_STAT_ENABLE 4716#if EV_STAT_ENABLE
2555 4717
2556# ifdef _WIN32 4718# ifdef _WIN32
2557# undef lstat 4719# undef lstat
… …
2560 4722
2561#define DEF_STAT_INTERVAL 5.0074891 4723#define DEF_STAT_INTERVAL 5.0074891
2562#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4724#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2563#define MIN_STAT_INTERVAL 0.1074891 4725#define MIN_STAT_INTERVAL 0.1074891
2564 4726
2565static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4727ecb_noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2566 4728
2567#if EV_USE_INOTIFY 4729#if EV_USE_INOTIFY
2568# define EV_INOTIFY_BUFSIZE 8192
2569 4730
2570static void noinline 4731/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
4732# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
4733
4734ecb_noinline
4735static void
2571infy_add (EV_P_ ev_stat *w) 4736infy_add (EV_P_ ev_stat *w)
2572{ 4737{
2573 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); 4738 w->wd = inotify_add_watch (fs_fd, w->path,
4739 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4740 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4741 | IN_DONT_FOLLOW | IN_MASK_ADD);
2574 4742
2575 if (w->wd < 0) 4743 if (w->wd >= 0)
4744 {
4745 struct statfs sfs;
4746
4747 /* now local changes will be tracked by inotify, but remote changes won't */
4748 /* unless the filesystem is known to be local, we therefore still poll */
4749 /* also do poll on <2.6.25, but with normal frequency */
4750
4751 if (!fs_2625)
4752 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
4753 else if (!statfs (w->path, &sfs)
4754 && (sfs.f_type == 0x1373 /* devfs */
4755 || sfs.f_type == 0x4006 /* fat */
4756 || sfs.f_type == 0x4d44 /* msdos */
4757 || sfs.f_type == 0xEF53 /* ext2/3 */
4758 || sfs.f_type == 0x72b6 /* jffs2 */
4759 || sfs.f_type == 0x858458f6 /* ramfs */
4760 || sfs.f_type == 0x5346544e /* ntfs */
4761 || sfs.f_type == 0x3153464a /* jfs */
4762 || sfs.f_type == 0x9123683e /* btrfs */
4763 || sfs.f_type == 0x52654973 /* reiser3 */
4764 || sfs.f_type == 0x01021994 /* tmpfs */
4765 || sfs.f_type == 0x58465342 /* xfs */))
4766 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
4767 else
4768 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2576 { 4769 }
4770 else
4771 {
4772 /* can't use inotify, continue to stat */
2577 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4773 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2578 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2579 4774
2580 /* monitor some parent directory for speedup hints */ 4775 /* if path is not there, monitor some parent directory for speedup hints */
2581 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 4776 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2582 /* but an efficiency issue only */ 4777 /* but an efficiency issue only */
2583 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 4778 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2584 { 4779 {
2585 char path [4096]; 4780 char path [4096];
… …
2595 if (!pend || pend == path) 4790 if (!pend || pend == path)
2596 break; 4791 break;
2597 4792
2598 *pend = 0; 4793 *pend = 0;
2599 w->wd = inotify_add_watch (fs_fd, path, mask); 4794 w->wd = inotify_add_watch (fs_fd, path, mask);
2600 } 4795 }
2601 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 4796 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2602 } 4797 }
2603 } 4798 }
2604 4799
2605 if (w->wd >= 0) 4800 if (w->wd >= 0)
2606 {
2607 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4801 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2608 4802
2609 /* now local changes will be tracked by inotify, but remote changes won't */ 4803 /* now re-arm timer, if required */
2610 /* unless the filesystem it known to be local, we therefore still poll */ 4804 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2611 /* also do poll on <2.6.25, but with normal frequency */
2612 struct statfs sfs;
2613
2614 if (fs_2625 && !statfs (w->path, &sfs))
2615 if (sfs.f_type == 0x1373 /* devfs */
2616 || sfs.f_type == 0xEF53 /* ext2/3 */
2617 || sfs.f_type == 0x3153464a /* jfs */
2618 || sfs.f_type == 0x52654973 /* reiser3 */
2619 || sfs.f_type == 0x01021994 /* tempfs */
2620 || sfs.f_type == 0x58465342 /* xfs */)
2621 return;
2622
2623 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2624 ev_timer_again (EV_A_ &w->timer); 4805 ev_timer_again (EV_A_ &w->timer);
2625 } 4806 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2626} 4807}
2627 4808
2628static void noinline 4809ecb_noinline
4810static void
2629infy_del (EV_P_ ev_stat *w) 4811infy_del (EV_P_ ev_stat *w)
2630{ 4812{
2631 int slot; 4813 int slot;
2632 int wd = w->wd; 4814 int wd = w->wd;
2633 4815
2634 if (wd < 0) 4816 if (wd < 0)
2635 return; 4817 return;
2636 4818
2637 w->wd = -2; 4819 w->wd = -2;
2638 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 4820 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2639 wlist_del (&fs_hash [slot].head, (WL)w); 4821 wlist_del (&fs_hash [slot].head, (WL)w);
2640 4822
2641 /* remove this watcher, if others are watching it, they will rearm */ 4823 /* remove this watcher, if others are watching it, they will rearm */
2642 inotify_rm_watch (fs_fd, wd); 4824 inotify_rm_watch (fs_fd, wd);
2643} 4825}
2644 4826
2645static void noinline 4827ecb_noinline
4828static void
2646infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4829infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2647{ 4830{
2648 if (slot < 0) 4831 if (slot < 0)
2649 /* overflow, need to check for all hash slots */ 4832 /* overflow, need to check for all hash slots */
2650 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4833 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2651 infy_wd (EV_A_ slot, wd, ev); 4834 infy_wd (EV_A_ slot, wd, ev);
2652 else 4835 else
2653 { 4836 {
2654 WL w_; 4837 WL w_;
2655 4838
2656 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 4839 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2657 { 4840 {
2658 ev_stat *w = (ev_stat *)w_; 4841 ev_stat *w = (ev_stat *)w_;
2659 w_ = w_->next; /* lets us remove this watcher and all before it */ 4842 w_ = w_->next; /* lets us remove this watcher and all before it */
2660 4843
2661 if (w->wd == wd || wd == -1) 4844 if (w->wd == wd || wd == -1)
2662 { 4845 {
2663 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 4846 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2664 { 4847 {
2665 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4848 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2666 w->wd = -1; 4849 w->wd = -1;
2667 infy_add (EV_A_ w); /* re-add, no matter what */ 4850 infy_add (EV_A_ w); /* re-add, no matter what */
2668 } 4851 }
2669 4852
2670 stat_timer_cb (EV_A_ &w->timer, 0); 4853 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2675 4858
2676static void 4859static void
2677infy_cb (EV_P_ ev_io *w, int revents) 4860infy_cb (EV_P_ ev_io *w, int revents)
2678{ 4861{
2679 char buf [EV_INOTIFY_BUFSIZE]; 4862 char buf [EV_INOTIFY_BUFSIZE];
2680 struct inotify_event *ev = (struct inotify_event *)buf;
2681 int ofs; 4863 int ofs;
2682 int len = read (fs_fd, buf, sizeof (buf)); 4864 int len = read (fs_fd, buf, sizeof (buf));
2683 4865
2684 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 4866 for (ofs = 0; ofs < len; )
4867 {
4868 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2685 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4869 infy_wd (EV_A_ ev->wd, ev->wd, ev);
4870 ofs += sizeof (struct inotify_event) + ev->len;
4871 }
2686} 4872}
2687 4873
2688inline_size void 4874inline_size ecb_cold
4875void
2689check_2625 (EV_P) 4876ev_check_2625 (EV_P)
2690{ 4877{
2691 /* kernels < 2.6.25 are borked 4878 /* kernels < 2.6.25 are borked
2692 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4879 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2693 */ 4880 */
2694 struct utsname buf; 4881 if (ev_linux_version () < 0x020619)
2695 int major, minor, micro;
2696
2697 if (uname (&buf))
2698 return; 4882 return;
2699 4883
2700 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2701 return;
2702
2703 if (major < 2
2704 || (major == 2 && minor < 6)
2705 || (major == 2 && minor == 6 && micro < 25))
2706 return;
2707
2708 fs_2625 = 1; 4884 fs_2625 = 1;
4885}
4886
4887inline_size int
4888infy_newfd (void)
4889{
4890#if defined IN_CLOEXEC && defined IN_NONBLOCK
4891 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
4892 if (fd >= 0)
4893 return fd;
4894#endif
4895 return inotify_init ();
2709} 4896}
2710 4897
2711inline_size void 4898inline_size void
2712infy_init (EV_P) 4899infy_init (EV_P)
2713{ 4900{
2714 if (fs_fd != -2) 4901 if (fs_fd != -2)
2715 return; 4902 return;
2716 4903
2717 fs_fd = -1; 4904 fs_fd = -1;
2718 4905
2719 check_2625 (EV_A); 4906 ev_check_2625 (EV_A);
2720 4907
2721 fs_fd = inotify_init (); 4908 fs_fd = infy_newfd ();
2722 4909
2723 if (fs_fd >= 0) 4910 if (fs_fd >= 0)
2724 { 4911 {
4912 fd_intern (fs_fd);
2725 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 4913 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2726 ev_set_priority (&fs_w, EV_MAXPRI); 4914 ev_set_priority (&fs_w, EV_MAXPRI);
2727 ev_io_start (EV_A_ &fs_w); 4915 ev_io_start (EV_A_ &fs_w);
4916 ev_unref (EV_A);
2728 } 4917 }
2729} 4918}
2730 4919
2731inline_size void 4920inline_size void
2732infy_fork (EV_P) 4921infy_fork (EV_P)
… …
2734 int slot; 4923 int slot;
2735 4924
2736 if (fs_fd < 0) 4925 if (fs_fd < 0)
2737 return; 4926 return;
2738 4927
4928 ev_ref (EV_A);
4929 ev_io_stop (EV_A_ &fs_w);
2739 close (fs_fd); 4930 close (fs_fd);
2740 fs_fd = inotify_init (); 4931 fs_fd = infy_newfd ();
2741 4932
4933 if (fs_fd >= 0)
4934 {
4935 fd_intern (fs_fd);
4936 ev_io_set (&fs_w, fs_fd, EV_READ);
4937 ev_io_start (EV_A_ &fs_w);
4938 ev_unref (EV_A);
4939 }
4940
2742 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4941 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2743 { 4942 {
2744 WL w_ = fs_hash [slot].head; 4943 WL w_ = fs_hash [slot].head;
2745 fs_hash [slot].head = 0; 4944 fs_hash [slot].head = 0;
2746 4945
2747 while (w_) 4946 while (w_)
… …
2752 w->wd = -1; 4951 w->wd = -1;
2753 4952
2754 if (fs_fd >= 0) 4953 if (fs_fd >= 0)
2755 infy_add (EV_A_ w); /* re-add, no matter what */ 4954 infy_add (EV_A_ w); /* re-add, no matter what */
2756 else 4955 else
4956 {
4957 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
4958 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2757 ev_timer_again (EV_A_ &w->timer); 4959 ev_timer_again (EV_A_ &w->timer);
4960 if (ev_is_active (&w->timer)) ev_unref (EV_A);
4961 }
2758 } 4962 }
2759 } 4963 }
2760} 4964}
2761 4965
2762#endif 4966#endif
… …
2766#else 4970#else
2767# define EV_LSTAT(p,b) lstat (p, b) 4971# define EV_LSTAT(p,b) lstat (p, b)
2768#endif 4972#endif
2769 4973
2770void 4974void
2771ev_stat_stat (EV_P_ ev_stat *w) 4975ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
2772{ 4976{
2773 if (lstat (w->path, &w->attr) < 0) 4977 if (lstat (w->path, &w->attr) < 0)
2774 w->attr.st_nlink = 0; 4978 w->attr.st_nlink = 0;
2775 else if (!w->attr.st_nlink) 4979 else if (!w->attr.st_nlink)
2776 w->attr.st_nlink = 1; 4980 w->attr.st_nlink = 1;
2777} 4981}
2778 4982
2779static void noinline 4983ecb_noinline
4984static void
2780stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4985stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2781{ 4986{
2782 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4987 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2783 4988
2784 /* we copy this here each the time so that */ 4989 ev_statdata prev = w->attr;
2785 /* prev has the old value when the callback gets invoked */
2786 w->prev = w->attr;
2787 ev_stat_stat (EV_A_ w); 4990 ev_stat_stat (EV_A_ w);
2788 4991
2789 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 4992 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2790 if ( 4993 if (
2791 w->prev.st_dev != w->attr.st_dev 4994 prev.st_dev != w->attr.st_dev
2792 || w->prev.st_ino != w->attr.st_ino 4995 || prev.st_ino != w->attr.st_ino
2793 || w->prev.st_mode != w->attr.st_mode 4996 || prev.st_mode != w->attr.st_mode
2794 || w->prev.st_nlink != w->attr.st_nlink 4997 || prev.st_nlink != w->attr.st_nlink
2795 || w->prev.st_uid != w->attr.st_uid 4998 || prev.st_uid != w->attr.st_uid
2796 || w->prev.st_gid != w->attr.st_gid 4999 || prev.st_gid != w->attr.st_gid
2797 || w->prev.st_rdev != w->attr.st_rdev 5000 || prev.st_rdev != w->attr.st_rdev
2798 || w->prev.st_size != w->attr.st_size 5001 || prev.st_size != w->attr.st_size
2799 || w->prev.st_atime != w->attr.st_atime 5002 || prev.st_atime != w->attr.st_atime
2800 || w->prev.st_mtime != w->attr.st_mtime 5003 || prev.st_mtime != w->attr.st_mtime
2801 || w->prev.st_ctime != w->attr.st_ctime 5004 || prev.st_ctime != w->attr.st_ctime
2802 ) { 5005 ) {
5006 /* we only update w->prev on actual differences */
5007 /* in case we test more often than invoke the callback, */
5008 /* to ensure that prev is always different to attr */
5009 w->prev = prev;
5010
2803 #if EV_USE_INOTIFY 5011 #if EV_USE_INOTIFY
2804 if (fs_fd >= 0) 5012 if (fs_fd >= 0)
2805 { 5013 {
2806 infy_del (EV_A_ w); 5014 infy_del (EV_A_ w);
2807 infy_add (EV_A_ w); 5015 infy_add (EV_A_ w);
… …
2812 ev_feed_event (EV_A_ w, EV_STAT); 5020 ev_feed_event (EV_A_ w, EV_STAT);
2813 } 5021 }
2814} 5022}
2815 5023
2816void 5024void
2817ev_stat_start (EV_P_ ev_stat *w) 5025ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
2818{ 5026{
2819 if (expect_false (ev_is_active (w))) 5027 if (ecb_expect_false (ev_is_active (w)))
2820 return; 5028 return;
2821 5029
2822 ev_stat_stat (EV_A_ w); 5030 ev_stat_stat (EV_A_ w);
2823 5031
2824 if (w->interval < MIN_STAT_INTERVAL && w->interval) 5032 if (w->interval < MIN_STAT_INTERVAL && w->interval)
… …
2832 5040
2833 if (fs_fd >= 0) 5041 if (fs_fd >= 0)
2834 infy_add (EV_A_ w); 5042 infy_add (EV_A_ w);
2835 else 5043 else
2836#endif 5044#endif
5045 {
2837 ev_timer_again (EV_A_ &w->timer); 5046 ev_timer_again (EV_A_ &w->timer);
5047 ev_unref (EV_A);
5048 }
2838 5049
2839 ev_start (EV_A_ (W)w, 1); 5050 ev_start (EV_A_ (W)w, 1);
2840 5051
2841 EV_FREQUENT_CHECK; 5052 EV_FREQUENT_CHECK;
2842} 5053}
2843 5054
2844void 5055void
2845ev_stat_stop (EV_P_ ev_stat *w) 5056ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
2846{ 5057{
2847 clear_pending (EV_A_ (W)w); 5058 clear_pending (EV_A_ (W)w);
2848 if (expect_false (!ev_is_active (w))) 5059 if (ecb_expect_false (!ev_is_active (w)))
2849 return; 5060 return;
2850 5061
2851 EV_FREQUENT_CHECK; 5062 EV_FREQUENT_CHECK;
2852 5063
2853#if EV_USE_INOTIFY 5064#if EV_USE_INOTIFY
2854 infy_del (EV_A_ w); 5065 infy_del (EV_A_ w);
2855#endif 5066#endif
5067
5068 if (ev_is_active (&w->timer))
5069 {
5070 ev_ref (EV_A);
2856 ev_timer_stop (EV_A_ &w->timer); 5071 ev_timer_stop (EV_A_ &w->timer);
5072 }
2857 5073
2858 ev_stop (EV_A_ (W)w); 5074 ev_stop (EV_A_ (W)w);
2859 5075
2860 EV_FREQUENT_CHECK; 5076 EV_FREQUENT_CHECK;
2861} 5077}
2862#endif 5078#endif
2863 5079
2864#if EV_IDLE_ENABLE 5080#if EV_IDLE_ENABLE
2865void 5081void
2866ev_idle_start (EV_P_ ev_idle *w) 5082ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
2867{ 5083{
2868 if (expect_false (ev_is_active (w))) 5084 if (ecb_expect_false (ev_is_active (w)))
2869 return; 5085 return;
2870 5086
2871 pri_adjust (EV_A_ (W)w); 5087 pri_adjust (EV_A_ (W)w);
2872 5088
2873 EV_FREQUENT_CHECK; 5089 EV_FREQUENT_CHECK;
… …
2876 int active = ++idlecnt [ABSPRI (w)]; 5092 int active = ++idlecnt [ABSPRI (w)];
2877 5093
2878 ++idleall; 5094 ++idleall;
2879 ev_start (EV_A_ (W)w, active); 5095 ev_start (EV_A_ (W)w, active);
2880 5096
2881 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 5097 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
2882 idles [ABSPRI (w)][active - 1] = w; 5098 idles [ABSPRI (w)][active - 1] = w;
2883 } 5099 }
2884 5100
2885 EV_FREQUENT_CHECK; 5101 EV_FREQUENT_CHECK;
2886} 5102}
2887 5103
2888void 5104void
2889ev_idle_stop (EV_P_ ev_idle *w) 5105ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
2890{ 5106{
2891 clear_pending (EV_A_ (W)w); 5107 clear_pending (EV_A_ (W)w);
2892 if (expect_false (!ev_is_active (w))) 5108 if (ecb_expect_false (!ev_is_active (w)))
2893 return; 5109 return;
2894 5110
2895 EV_FREQUENT_CHECK; 5111 EV_FREQUENT_CHECK;
2896 5112
2897 { 5113 {
… …
2906 5122
2907 EV_FREQUENT_CHECK; 5123 EV_FREQUENT_CHECK;
2908} 5124}
2909#endif 5125#endif
2910 5126
5127#if EV_PREPARE_ENABLE
2911void 5128void
2912ev_prepare_start (EV_P_ ev_prepare *w) 5129ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
2913{ 5130{
2914 if (expect_false (ev_is_active (w))) 5131 if (ecb_expect_false (ev_is_active (w)))
2915 return; 5132 return;
2916 5133
2917 EV_FREQUENT_CHECK; 5134 EV_FREQUENT_CHECK;
2918 5135
2919 ev_start (EV_A_ (W)w, ++preparecnt); 5136 ev_start (EV_A_ (W)w, ++preparecnt);
2920 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 5137 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
2921 prepares [preparecnt - 1] = w; 5138 prepares [preparecnt - 1] = w;
2922 5139
2923 EV_FREQUENT_CHECK; 5140 EV_FREQUENT_CHECK;
2924} 5141}
2925 5142
2926void 5143void
2927ev_prepare_stop (EV_P_ ev_prepare *w) 5144ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
2928{ 5145{
2929 clear_pending (EV_A_ (W)w); 5146 clear_pending (EV_A_ (W)w);
2930 if (expect_false (!ev_is_active (w))) 5147 if (ecb_expect_false (!ev_is_active (w)))
2931 return; 5148 return;
2932 5149
2933 EV_FREQUENT_CHECK; 5150 EV_FREQUENT_CHECK;
2934 5151
2935 { 5152 {
… …
2941 5158
2942 ev_stop (EV_A_ (W)w); 5159 ev_stop (EV_A_ (W)w);
2943 5160
2944 EV_FREQUENT_CHECK; 5161 EV_FREQUENT_CHECK;
2945} 5162}
5163#endif
2946 5164
5165#if EV_CHECK_ENABLE
2947void 5166void
2948ev_check_start (EV_P_ ev_check *w) 5167ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
2949{ 5168{
2950 if (expect_false (ev_is_active (w))) 5169 if (ecb_expect_false (ev_is_active (w)))
2951 return; 5170 return;
2952 5171
2953 EV_FREQUENT_CHECK; 5172 EV_FREQUENT_CHECK;
2954 5173
2955 ev_start (EV_A_ (W)w, ++checkcnt); 5174 ev_start (EV_A_ (W)w, ++checkcnt);
2956 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 5175 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
2957 checks [checkcnt - 1] = w; 5176 checks [checkcnt - 1] = w;
2958 5177
2959 EV_FREQUENT_CHECK; 5178 EV_FREQUENT_CHECK;
2960} 5179}
2961 5180
2962void 5181void
2963ev_check_stop (EV_P_ ev_check *w) 5182ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
2964{ 5183{
2965 clear_pending (EV_A_ (W)w); 5184 clear_pending (EV_A_ (W)w);
2966 if (expect_false (!ev_is_active (w))) 5185 if (ecb_expect_false (!ev_is_active (w)))
2967 return; 5186 return;
2968 5187
2969 EV_FREQUENT_CHECK; 5188 EV_FREQUENT_CHECK;
2970 5189
2971 { 5190 {
… …
2977 5196
2978 ev_stop (EV_A_ (W)w); 5197 ev_stop (EV_A_ (W)w);
2979 5198
2980 EV_FREQUENT_CHECK; 5199 EV_FREQUENT_CHECK;
2981} 5200}
5201#endif
2982 5202
2983#if EV_EMBED_ENABLE 5203#if EV_EMBED_ENABLE
2984void noinline 5204ecb_noinline
5205void
2985ev_embed_sweep (EV_P_ ev_embed *w) 5206ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
2986{ 5207{
2987 ev_loop (w->other, EVLOOP_NONBLOCK); 5208 ev_run (w->other, EVRUN_NOWAIT);
2988} 5209}
2989 5210
2990static void 5211static void
2991embed_io_cb (EV_P_ ev_io *io, int revents) 5212embed_io_cb (EV_P_ ev_io *io, int revents)
2992{ 5213{
2993 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 5214 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2994 5215
2995 if (ev_cb (w)) 5216 if (ev_cb (w))
2996 ev_feed_event (EV_A_ (W)w, EV_EMBED); 5217 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2997 else 5218 else
2998 ev_loop (w->other, EVLOOP_NONBLOCK); 5219 ev_run (w->other, EVRUN_NOWAIT);
2999} 5220}
3000 5221
3001static void 5222static void
3002embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 5223embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3003{ 5224{
3004 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 5225 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
3005 5226
3006 { 5227 {
3007 struct ev_loop *loop = w->other; 5228 EV_P = w->other;
3008 5229
3009 while (fdchangecnt) 5230 while (fdchangecnt)
3010 { 5231 {
3011 fd_reify (EV_A); 5232 fd_reify (EV_A);
3012 ev_loop (EV_A_ EVLOOP_NONBLOCK); 5233 ev_run (EV_A_ EVRUN_NOWAIT);
3013 } 5234 }
3014 } 5235 }
3015} 5236}
3016 5237
5238#if EV_FORK_ENABLE
3017static void 5239static void
3018embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) 5240embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
3019{ 5241{
3020 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 5242 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3021 5243
3022 ev_embed_stop (EV_A_ w); 5244 ev_embed_stop (EV_A_ w);
3023 5245
3024 { 5246 {
3025 struct ev_loop *loop = w->other; 5247 EV_P = w->other;
3026 5248
3027 ev_loop_fork (EV_A); 5249 ev_loop_fork (EV_A);
3028 ev_loop (EV_A_ EVLOOP_NONBLOCK); 5250 ev_run (EV_A_ EVRUN_NOWAIT);
3029 } 5251 }
3030 5252
3031 ev_embed_start (EV_A_ w); 5253 ev_embed_start (EV_A_ w);
3032} 5254}
5255#endif
3033 5256
3034#if 0 5257#if 0
3035static void 5258static void
3036embed_idle_cb (EV_P_ ev_idle *idle, int revents) 5259embed_idle_cb (EV_P_ ev_idle *idle, int revents)
3037{ 5260{
3038 ev_idle_stop (EV_A_ idle); 5261 ev_idle_stop (EV_A_ idle);
3039} 5262}
3040#endif 5263#endif
3041 5264
3042void 5265void
3043ev_embed_start (EV_P_ ev_embed *w) 5266ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
3044{ 5267{
3045 if (expect_false (ev_is_active (w))) 5268 if (ecb_expect_false (ev_is_active (w)))
3046 return; 5269 return;
3047 5270
3048 { 5271 {
3049 struct ev_loop *loop = w->other; 5272 EV_P = w->other;
3050 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 5273 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
3051 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 5274 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3052 } 5275 }
3053 5276
3054 EV_FREQUENT_CHECK; 5277 EV_FREQUENT_CHECK;
… …
3058 5281
3059 ev_prepare_init (&w->prepare, embed_prepare_cb); 5282 ev_prepare_init (&w->prepare, embed_prepare_cb);
3060 ev_set_priority (&w->prepare, EV_MINPRI); 5283 ev_set_priority (&w->prepare, EV_MINPRI);
3061 ev_prepare_start (EV_A_ &w->prepare); 5284 ev_prepare_start (EV_A_ &w->prepare);
3062 5285
5286#if EV_FORK_ENABLE
3063 ev_fork_init (&w->fork, embed_fork_cb); 5287 ev_fork_init (&w->fork, embed_fork_cb);
3064 ev_fork_start (EV_A_ &w->fork); 5288 ev_fork_start (EV_A_ &w->fork);
5289#endif
3065 5290
3066 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 5291 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
3067 5292
3068 ev_start (EV_A_ (W)w, 1); 5293 ev_start (EV_A_ (W)w, 1);
3069 5294
3070 EV_FREQUENT_CHECK; 5295 EV_FREQUENT_CHECK;
3071} 5296}
3072 5297
3073void 5298void
3074ev_embed_stop (EV_P_ ev_embed *w) 5299ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
3075{ 5300{
3076 clear_pending (EV_A_ (W)w); 5301 clear_pending (EV_A_ (W)w);
3077 if (expect_false (!ev_is_active (w))) 5302 if (ecb_expect_false (!ev_is_active (w)))
3078 return; 5303 return;
3079 5304
3080 EV_FREQUENT_CHECK; 5305 EV_FREQUENT_CHECK;
3081 5306
3082 ev_io_stop (EV_A_ &w->io); 5307 ev_io_stop (EV_A_ &w->io);
3083 ev_prepare_stop (EV_A_ &w->prepare); 5308 ev_prepare_stop (EV_A_ &w->prepare);
5309#if EV_FORK_ENABLE
3084 ev_fork_stop (EV_A_ &w->fork); 5310 ev_fork_stop (EV_A_ &w->fork);
5311#endif
5312
5313 ev_stop (EV_A_ (W)w);
3085 5314
3086 EV_FREQUENT_CHECK; 5315 EV_FREQUENT_CHECK;
3087} 5316}
3088#endif 5317#endif
3089 5318
3090#if EV_FORK_ENABLE 5319#if EV_FORK_ENABLE
3091void 5320void
3092ev_fork_start (EV_P_ ev_fork *w) 5321ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
3093{ 5322{
3094 if (expect_false (ev_is_active (w))) 5323 if (ecb_expect_false (ev_is_active (w)))
3095 return; 5324 return;
3096 5325
3097 EV_FREQUENT_CHECK; 5326 EV_FREQUENT_CHECK;
3098 5327
3099 ev_start (EV_A_ (W)w, ++forkcnt); 5328 ev_start (EV_A_ (W)w, ++forkcnt);
3100 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 5329 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
3101 forks [forkcnt - 1] = w; 5330 forks [forkcnt - 1] = w;
3102 5331
3103 EV_FREQUENT_CHECK; 5332 EV_FREQUENT_CHECK;
3104} 5333}
3105 5334
3106void 5335void
3107ev_fork_stop (EV_P_ ev_fork *w) 5336ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
3108{ 5337{
3109 clear_pending (EV_A_ (W)w); 5338 clear_pending (EV_A_ (W)w);
3110 if (expect_false (!ev_is_active (w))) 5339 if (ecb_expect_false (!ev_is_active (w)))
3111 return; 5340 return;
3112 5341
3113 EV_FREQUENT_CHECK; 5342 EV_FREQUENT_CHECK;
3114 5343
3115 { 5344 {
… …
3123 5352
3124 EV_FREQUENT_CHECK; 5353 EV_FREQUENT_CHECK;
3125} 5354}
3126#endif 5355#endif
3127 5356
5357#if EV_CLEANUP_ENABLE
5358void
5359ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
5360{
5361 if (ecb_expect_false (ev_is_active (w)))
5362 return;
5363
5364 EV_FREQUENT_CHECK;
5365
5366 ev_start (EV_A_ (W)w, ++cleanupcnt);
5367 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
5368 cleanups [cleanupcnt - 1] = w;
5369
5370 /* cleanup watchers should never keep a refcount on the loop */
5371 ev_unref (EV_A);
5372 EV_FREQUENT_CHECK;
5373}
5374
5375void
5376ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
5377{
5378 clear_pending (EV_A_ (W)w);
5379 if (ecb_expect_false (!ev_is_active (w)))
5380 return;
5381
5382 EV_FREQUENT_CHECK;
5383 ev_ref (EV_A);
5384
5385 {
5386 int active = ev_active (w);
5387
5388 cleanups [active - 1] = cleanups [--cleanupcnt];
5389 ev_active (cleanups [active - 1]) = active;
5390 }
5391
5392 ev_stop (EV_A_ (W)w);
5393
5394 EV_FREQUENT_CHECK;
5395}
5396#endif
5397
3128#if EV_ASYNC_ENABLE 5398#if EV_ASYNC_ENABLE
3129void 5399void
3130ev_async_start (EV_P_ ev_async *w) 5400ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
3131{ 5401{
3132 if (expect_false (ev_is_active (w))) 5402 if (ecb_expect_false (ev_is_active (w)))
3133 return; 5403 return;
3134 5404
5405 w->sent = 0;
5406
3135 evpipe_init (EV_A); 5407 evpipe_init (EV_A);
3136 5408
3137 EV_FREQUENT_CHECK; 5409 EV_FREQUENT_CHECK;
3138 5410
3139 ev_start (EV_A_ (W)w, ++asynccnt); 5411 ev_start (EV_A_ (W)w, ++asynccnt);
3140 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 5412 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
3141 asyncs [asynccnt - 1] = w; 5413 asyncs [asynccnt - 1] = w;
3142 5414
3143 EV_FREQUENT_CHECK; 5415 EV_FREQUENT_CHECK;
3144} 5416}
3145 5417
3146void 5418void
3147ev_async_stop (EV_P_ ev_async *w) 5419ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
3148{ 5420{
3149 clear_pending (EV_A_ (W)w); 5421 clear_pending (EV_A_ (W)w);
3150 if (expect_false (!ev_is_active (w))) 5422 if (ecb_expect_false (!ev_is_active (w)))
3151 return; 5423 return;
3152 5424
3153 EV_FREQUENT_CHECK; 5425 EV_FREQUENT_CHECK;
3154 5426
3155 { 5427 {
… …
3163 5435
3164 EV_FREQUENT_CHECK; 5436 EV_FREQUENT_CHECK;
3165} 5437}
3166 5438
3167void 5439void
3168ev_async_send (EV_P_ ev_async *w) 5440ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
3169{ 5441{
3170 w->sent = 1; 5442 w->sent = 1;
3171 evpipe_write (EV_A_ &gotasync); 5443 evpipe_write (EV_A_ &async_pending);
3172} 5444}
3173#endif 5445#endif
3174 5446
3175/*****************************************************************************/ 5447/*****************************************************************************/
3176 5448
… …
3210 5482
3211 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5483 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3212} 5484}
3213 5485
3214void 5486void
3215ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 5487ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
3216{ 5488{
3217 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5489 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3218
3219 if (expect_false (!once))
3220 {
3221 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
3222 return;
3223 }
3224 5490
3225 once->cb = cb; 5491 once->cb = cb;
3226 once->arg = arg; 5492 once->arg = arg;
3227 5493
3228 ev_init (&once->io, once_cb_io); 5494 ev_init (&once->io, once_cb_io);
… …
3241} 5507}
3242 5508
3243/*****************************************************************************/ 5509/*****************************************************************************/
3244 5510
3245#if EV_WALK_ENABLE 5511#if EV_WALK_ENABLE
5512ecb_cold
3246void 5513void
3247ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 5514ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
3248{ 5515{
3249 int i, j; 5516 int i, j;
3250 ev_watcher_list *wl, *wn; 5517 ev_watcher_list *wl, *wn;
3251 5518
3252 if (types & (EV_IO | EV_EMBED)) 5519 if (types & (EV_IO | EV_EMBED))
… …
3295 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 5562 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3296#endif 5563#endif
3297 5564
3298#if EV_IDLE_ENABLE 5565#if EV_IDLE_ENABLE
3299 if (types & EV_IDLE) 5566 if (types & EV_IDLE)
3300 for (j = NUMPRI; i--; ) 5567 for (j = NUMPRI; j--; )
3301 for (i = idlecnt [j]; i--; ) 5568 for (i = idlecnt [j]; i--; )
3302 cb (EV_A_ EV_IDLE, idles [j][i]); 5569 cb (EV_A_ EV_IDLE, idles [j][i]);
3303#endif 5570#endif
3304 5571
3305#if EV_FORK_ENABLE 5572#if EV_FORK_ENABLE
… …
3313 if (types & EV_ASYNC) 5580 if (types & EV_ASYNC)
3314 for (i = asynccnt; i--; ) 5581 for (i = asynccnt; i--; )
3315 cb (EV_A_ EV_ASYNC, asyncs [i]); 5582 cb (EV_A_ EV_ASYNC, asyncs [i]);
3316#endif 5583#endif
3317 5584
5585#if EV_PREPARE_ENABLE
3318 if (types & EV_PREPARE) 5586 if (types & EV_PREPARE)
3319 for (i = preparecnt; i--; ) 5587 for (i = preparecnt; i--; )
3320#if EV_EMBED_ENABLE 5588# if EV_EMBED_ENABLE
3321 if (ev_cb (prepares [i]) != embed_prepare_cb) 5589 if (ev_cb (prepares [i]) != embed_prepare_cb)
3322#endif 5590# endif
3323 cb (EV_A_ EV_PREPARE, prepares [i]); 5591 cb (EV_A_ EV_PREPARE, prepares [i]);
5592#endif
3324 5593
5594#if EV_CHECK_ENABLE
3325 if (types & EV_CHECK) 5595 if (types & EV_CHECK)
3326 for (i = checkcnt; i--; ) 5596 for (i = checkcnt; i--; )
3327 cb (EV_A_ EV_CHECK, checks [i]); 5597 cb (EV_A_ EV_CHECK, checks [i]);
5598#endif
3328 5599
5600#if EV_SIGNAL_ENABLE
3329 if (types & EV_SIGNAL) 5601 if (types & EV_SIGNAL)
3330 for (i = 0; i < signalmax; ++i) 5602 for (i = 0; i < EV_NSIG - 1; ++i)
3331 for (wl = signals [i].head; wl; ) 5603 for (wl = signals [i].head; wl; )
3332 { 5604 {
3333 wn = wl->next; 5605 wn = wl->next;
3334 cb (EV_A_ EV_SIGNAL, wl); 5606 cb (EV_A_ EV_SIGNAL, wl);
3335 wl = wn; 5607 wl = wn;
3336 } 5608 }
5609#endif
3337 5610
5611#if EV_CHILD_ENABLE
3338 if (types & EV_CHILD) 5612 if (types & EV_CHILD)
3339 for (i = EV_PID_HASHSIZE; i--; ) 5613 for (i = (EV_PID_HASHSIZE); i--; )
3340 for (wl = childs [i]; wl; ) 5614 for (wl = childs [i]; wl; )
3341 { 5615 {
3342 wn = wl->next; 5616 wn = wl->next;
3343 cb (EV_A_ EV_CHILD, wl); 5617 cb (EV_A_ EV_CHILD, wl);
3344 wl = wn; 5618 wl = wn;
3345 } 5619 }
5620#endif
3346/* EV_STAT 0x00001000 /* stat data changed */ 5621/* EV_STAT 0x00001000 /* stat data changed */
3347/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 5622/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3348} 5623}
3349#endif 5624#endif
3350 5625
3351#if EV_MULTIPLICITY 5626#if EV_MULTIPLICITY
3352 #include "ev_wrap.h" 5627 #include "ev_wrap.h"
3353#endif 5628#endif
3354 5629
3355#ifdef __cplusplus
3356}
3357#endif
3358

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