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Comparing libev/ev.c (file contents):
Revision 1.328 by root, Sun Feb 14 19:23:19 2010 UTC vs.
Revision 1.522 by root, Tue Dec 31 06:02:28 2019 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009,2010 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007-2019 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
10 * 1. Redistributions of source code must retain the above copyright notice, 10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer. 11 * this list of conditions and the following disclaimer.
12 * 12 *
13 * 2. Redistributions in binary form must reproduce the above copyright 13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the 14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution. 15 * documentation and/or other materials provided with the distribution.
16 * 16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- 18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO 19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- 20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
… …
35 * and other provisions required by the GPL. If you do not delete the 35 * and other provisions required by the GPL. If you do not delete the
36 * provisions above, a recipient may use your version of this file under 36 * provisions above, a recipient may use your version of this file under
37 * either the BSD or the GPL. 37 * either the BSD or the GPL.
38 */ 38 */
39 39
40#ifdef __cplusplus
41extern "C" {
42#endif
43
44/* this big block deduces configuration from config.h */ 40/* this big block deduces configuration from config.h */
45#ifndef EV_STANDALONE 41#ifndef EV_STANDALONE
46# ifdef EV_CONFIG_H 42# ifdef EV_CONFIG_H
47# include EV_CONFIG_H 43# include EV_CONFIG_H
48# else 44# else
49# include "config.h" 45# include "config.h"
46# endif
47
48# if HAVE_FLOOR
49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1
51# endif
50# endif 52# endif
51 53
52# if HAVE_CLOCK_SYSCALL 54# if HAVE_CLOCK_SYSCALL
53# ifndef EV_USE_CLOCK_SYSCALL 55# ifndef EV_USE_CLOCK_SYSCALL
54# define EV_USE_CLOCK_SYSCALL 1 56# define EV_USE_CLOCK_SYSCALL 1
… …
57# endif 59# endif
58# ifndef EV_USE_MONOTONIC 60# ifndef EV_USE_MONOTONIC
59# define EV_USE_MONOTONIC 1 61# define EV_USE_MONOTONIC 1
60# endif 62# endif
61# endif 63# endif
62# elif !defined(EV_USE_CLOCK_SYSCALL) 64# elif !defined EV_USE_CLOCK_SYSCALL
63# define EV_USE_CLOCK_SYSCALL 0 65# define EV_USE_CLOCK_SYSCALL 0
64# endif 66# endif
65 67
66# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
67# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
… …
77# ifndef EV_USE_REALTIME 79# ifndef EV_USE_REALTIME
78# define EV_USE_REALTIME 0 80# define EV_USE_REALTIME 0
79# endif 81# endif
80# endif 82# endif
81 83
84# if HAVE_NANOSLEEP
82# ifndef EV_USE_NANOSLEEP 85# ifndef EV_USE_NANOSLEEP
83# if HAVE_NANOSLEEP
84# define EV_USE_NANOSLEEP 1 86# define EV_USE_NANOSLEEP EV_FEATURE_OS
87# endif
85# else 88# else
89# undef EV_USE_NANOSLEEP
86# define EV_USE_NANOSLEEP 0 90# define EV_USE_NANOSLEEP 0
91# endif
92
93# if HAVE_SELECT && HAVE_SYS_SELECT_H
94# ifndef EV_USE_SELECT
95# define EV_USE_SELECT EV_FEATURE_BACKENDS
87# endif 96# endif
97# else
98# undef EV_USE_SELECT
99# define EV_USE_SELECT 0
88# endif 100# endif
89 101
102# if HAVE_POLL && HAVE_POLL_H
90# ifndef EV_USE_SELECT 103# ifndef EV_USE_POLL
91# if HAVE_SELECT && HAVE_SYS_SELECT_H 104# define EV_USE_POLL EV_FEATURE_BACKENDS
92# define EV_USE_SELECT 1
93# else
94# define EV_USE_SELECT 0
95# endif 105# endif
96# endif
97
98# ifndef EV_USE_POLL
99# if HAVE_POLL && HAVE_POLL_H
100# define EV_USE_POLL 1
101# else 106# else
107# undef EV_USE_POLL
102# define EV_USE_POLL 0 108# define EV_USE_POLL 0
103# endif
104# endif 109# endif
105 110
106# ifndef EV_USE_EPOLL
107# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 111# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
108# define EV_USE_EPOLL 1 112# ifndef EV_USE_EPOLL
109# else 113# define EV_USE_EPOLL EV_FEATURE_BACKENDS
110# define EV_USE_EPOLL 0
111# endif 114# endif
115# else
116# undef EV_USE_EPOLL
117# define EV_USE_EPOLL 0
112# endif 118# endif
113 119
114# ifndef EV_USE_KQUEUE 120# if HAVE_LINUX_AIO_ABI_H
115# if HAVE_KQUEUE && HAVE_SYS_EVENT_H 121# ifndef EV_USE_LINUXAIO
116# define EV_USE_KQUEUE 1 122# define EV_USE_LINUXAIO 0 /* was: EV_FEATURE_BACKENDS, always off by default */
117# else
118# define EV_USE_KQUEUE 0
119# endif 123# endif
124# else
125# undef EV_USE_LINUXAIO
126# define EV_USE_LINUXAIO 0
120# endif 127# endif
121 128
129# if HAVE_LINUX_FS_H && HAVE_SYS_TIMERFD_H && HAVE_KERNEL_RWF_T
122# ifndef EV_USE_PORT 130# ifndef EV_USE_IOURING
123# if HAVE_PORT_H && HAVE_PORT_CREATE 131# define EV_USE_IOURING EV_FEATURE_BACKENDS
124# define EV_USE_PORT 1
125# else
126# define EV_USE_PORT 0
127# endif 132# endif
128# endif
129
130# ifndef EV_USE_INOTIFY
131# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
132# define EV_USE_INOTIFY 1
133# else 133# else
134# undef EV_USE_IOURING
134# define EV_USE_INOTIFY 0 135# define EV_USE_IOURING 0
135# endif
136# endif
137
138# ifndef EV_USE_SIGNALFD
139# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
140# define EV_USE_SIGNALFD 1
141# else
142# define EV_USE_SIGNALFD 0
143# endif
144# endif
145
146# ifndef EV_USE_EVENTFD
147# if HAVE_EVENTFD
148# define EV_USE_EVENTFD 1
149# else
150# define EV_USE_EVENTFD 0
151# endif
152# endif 136# endif
153 137
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
154#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
155 155
156#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
157#include <stdlib.h> 204#include <stdlib.h>
158#include <string.h> 205#include <string.h>
159#include <fcntl.h> 206#include <fcntl.h>
160#include <stddef.h> 207#include <stddef.h>
161 208
… …
171 218
172#ifdef EV_H 219#ifdef EV_H
173# include EV_H 220# include EV_H
174#else 221#else
175# 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
176#endif 234#endif
177 235
178#ifndef _WIN32 236#ifndef _WIN32
179# include <sys/time.h> 237# include <sys/time.h>
180# include <sys/wait.h> 238# include <sys/wait.h>
181# include <unistd.h> 239# include <unistd.h>
182#else 240#else
183# include <io.h> 241# include <io.h>
184# define WIN32_LEAN_AND_MEAN 242# define WIN32_LEAN_AND_MEAN
243# include <winsock2.h>
185# include <windows.h> 244# include <windows.h>
186# ifndef EV_SELECT_IS_WINSOCKET 245# ifndef EV_SELECT_IS_WINSOCKET
187# define EV_SELECT_IS_WINSOCKET 1 246# define EV_SELECT_IS_WINSOCKET 1
188# endif 247# endif
248# undef EV_AVOID_STDIO
189#endif 249#endif
190 250
191/* 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 */
192 252
193/* try to deduce the maximum number of signals on this platform */ 253/* try to deduce the maximum number of signals on this platform */
194#if defined (EV_NSIG) 254#if defined EV_NSIG
195/* use what's provided */ 255/* use what's provided */
196#elif defined (NSIG) 256#elif defined NSIG
197# define EV_NSIG (NSIG) 257# define EV_NSIG (NSIG)
198#elif defined(_NSIG) 258#elif defined _NSIG
199# define EV_NSIG (_NSIG) 259# define EV_NSIG (_NSIG)
200#elif defined (SIGMAX) 260#elif defined SIGMAX
201# define EV_NSIG (SIGMAX+1) 261# define EV_NSIG (SIGMAX+1)
202#elif defined (SIG_MAX) 262#elif defined SIG_MAX
203# define EV_NSIG (SIG_MAX+1) 263# define EV_NSIG (SIG_MAX+1)
204#elif defined (_SIG_MAX) 264#elif defined _SIG_MAX
205# define EV_NSIG (_SIG_MAX+1) 265# define EV_NSIG (_SIG_MAX+1)
206#elif defined (MAXSIG) 266#elif defined MAXSIG
207# define EV_NSIG (MAXSIG+1) 267# define EV_NSIG (MAXSIG+1)
208#elif defined (MAX_SIG) 268#elif defined MAX_SIG
209# define EV_NSIG (MAX_SIG+1) 269# define EV_NSIG (MAX_SIG+1)
210#elif defined (SIGARRAYSIZE) 270#elif defined SIGARRAYSIZE
211# define EV_NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */ 271# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
212#elif defined (_sys_nsig) 272#elif defined _sys_nsig
213# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 273# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
214#else 274#else
215# error "unable to find value for NSIG, please report" 275# define EV_NSIG (8 * sizeof (sigset_t) + 1)
216/* to make it compile regardless, just remove the above line */ 276#endif
217# define EV_NSIG 65 277
278#ifndef EV_USE_FLOOR
279# define EV_USE_FLOOR 0
218#endif 280#endif
219 281
220#ifndef EV_USE_CLOCK_SYSCALL 282#ifndef EV_USE_CLOCK_SYSCALL
221# if __linux && __GLIBC__ >= 2 283# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
222# define EV_USE_CLOCK_SYSCALL 1 284# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
223# else 285# else
224# define EV_USE_CLOCK_SYSCALL 0 286# define EV_USE_CLOCK_SYSCALL 0
225# endif 287# endif
226#endif 288#endif
227 289
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
228#ifndef EV_USE_MONOTONIC 299#ifndef EV_USE_MONOTONIC
229# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 300# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
230# define EV_USE_MONOTONIC 1 301# define EV_USE_MONOTONIC EV_FEATURE_OS
231# else 302# else
232# define EV_USE_MONOTONIC 0 303# define EV_USE_MONOTONIC 0
233# endif 304# endif
234#endif 305#endif
235 306
… …
237# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 308# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
238#endif 309#endif
239 310
240#ifndef EV_USE_NANOSLEEP 311#ifndef EV_USE_NANOSLEEP
241# if _POSIX_C_SOURCE >= 199309L 312# if _POSIX_C_SOURCE >= 199309L
242# define EV_USE_NANOSLEEP 1 313# define EV_USE_NANOSLEEP EV_FEATURE_OS
243# else 314# else
244# define EV_USE_NANOSLEEP 0 315# define EV_USE_NANOSLEEP 0
245# endif 316# endif
246#endif 317#endif
247 318
248#ifndef EV_USE_SELECT 319#ifndef EV_USE_SELECT
249# define EV_USE_SELECT 1 320# define EV_USE_SELECT EV_FEATURE_BACKENDS
250#endif 321#endif
251 322
252#ifndef EV_USE_POLL 323#ifndef EV_USE_POLL
253# ifdef _WIN32 324# ifdef _WIN32
254# define EV_USE_POLL 0 325# define EV_USE_POLL 0
255# else 326# else
256# define EV_USE_POLL 1 327# define EV_USE_POLL EV_FEATURE_BACKENDS
257# endif 328# endif
258#endif 329#endif
259 330
260#ifndef EV_USE_EPOLL 331#ifndef EV_USE_EPOLL
261# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 332# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
262# define EV_USE_EPOLL 1 333# define EV_USE_EPOLL EV_FEATURE_BACKENDS
263# else 334# else
264# define EV_USE_EPOLL 0 335# define EV_USE_EPOLL 0
265# endif 336# endif
266#endif 337#endif
267 338
… …
271 342
272#ifndef EV_USE_PORT 343#ifndef EV_USE_PORT
273# define EV_USE_PORT 0 344# define EV_USE_PORT 0
274#endif 345#endif
275 346
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
276#ifndef EV_USE_INOTIFY 363#ifndef EV_USE_INOTIFY
277# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 364# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
278# define EV_USE_INOTIFY 1 365# define EV_USE_INOTIFY EV_FEATURE_OS
279# else 366# else
280# define EV_USE_INOTIFY 0 367# define EV_USE_INOTIFY 0
281# endif 368# endif
282#endif 369#endif
283 370
284#ifndef EV_PID_HASHSIZE 371#ifndef EV_PID_HASHSIZE
285# if EV_MINIMAL 372# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
286# define EV_PID_HASHSIZE 1
287# else
288# define EV_PID_HASHSIZE 16
289# endif
290#endif 373#endif
291 374
292#ifndef EV_INOTIFY_HASHSIZE 375#ifndef EV_INOTIFY_HASHSIZE
293# if EV_MINIMAL 376# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
294# define EV_INOTIFY_HASHSIZE 1
295# else
296# define EV_INOTIFY_HASHSIZE 16
297# endif
298#endif 377#endif
299 378
300#ifndef EV_USE_EVENTFD 379#ifndef EV_USE_EVENTFD
301# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 380# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
302# define EV_USE_EVENTFD 1 381# define EV_USE_EVENTFD EV_FEATURE_OS
303# else 382# else
304# define EV_USE_EVENTFD 0 383# define EV_USE_EVENTFD 0
305# endif 384# endif
306#endif 385#endif
307 386
308#ifndef EV_USE_SIGNALFD 387#ifndef EV_USE_SIGNALFD
309# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 388# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
310# define EV_USE_SIGNALFD 1 389# define EV_USE_SIGNALFD EV_FEATURE_OS
311# else 390# else
312# define EV_USE_SIGNALFD 0 391# 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
313# endif 400# endif
314#endif 401#endif
315 402
316#if 0 /* debugging */ 403#if 0 /* debugging */
317# define EV_VERIFY 3 404# define EV_VERIFY 3
318# define EV_USE_4HEAP 1 405# define EV_USE_4HEAP 1
319# define EV_HEAP_CACHE_AT 1 406# define EV_HEAP_CACHE_AT 1
320#endif 407#endif
321 408
322#ifndef EV_VERIFY 409#ifndef EV_VERIFY
323# define EV_VERIFY !EV_MINIMAL 410# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
324#endif 411#endif
325 412
326#ifndef EV_USE_4HEAP 413#ifndef EV_USE_4HEAP
327# define EV_USE_4HEAP !EV_MINIMAL 414# define EV_USE_4HEAP EV_FEATURE_DATA
328#endif 415#endif
329 416
330#ifndef EV_HEAP_CACHE_AT 417#ifndef EV_HEAP_CACHE_AT
331# 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
332#endif 435#endif
333 436
334/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 437/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
335/* which makes programs even slower. might work on other unices, too. */ 438/* which makes programs even slower. might work on other unices, too. */
336#if EV_USE_CLOCK_SYSCALL 439#if EV_USE_CLOCK_SYSCALL
337# include <syscall.h> 440# include <sys/syscall.h>
338# ifdef SYS_clock_gettime 441# ifdef SYS_clock_gettime
339# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 442# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
340# undef EV_USE_MONOTONIC 443# undef EV_USE_MONOTONIC
341# define EV_USE_MONOTONIC 1 444# define EV_USE_MONOTONIC 1
445# define EV_NEED_SYSCALL 1
342# else 446# else
343# undef EV_USE_CLOCK_SYSCALL 447# undef EV_USE_CLOCK_SYSCALL
344# define EV_USE_CLOCK_SYSCALL 0 448# define EV_USE_CLOCK_SYSCALL 0
345# endif 449# endif
346#endif 450#endif
347 451
348/* 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 */
349 453
350#ifdef _AIX
351/* AIX has a completely broken poll.h header */
352# undef EV_USE_POLL
353# define EV_USE_POLL 0
354#endif
355
356#ifndef CLOCK_MONOTONIC 454#ifndef CLOCK_MONOTONIC
357# undef EV_USE_MONOTONIC 455# undef EV_USE_MONOTONIC
358# define EV_USE_MONOTONIC 0 456# define EV_USE_MONOTONIC 0
359#endif 457#endif
360 458
… …
366#if !EV_STAT_ENABLE 464#if !EV_STAT_ENABLE
367# undef EV_USE_INOTIFY 465# undef EV_USE_INOTIFY
368# define EV_USE_INOTIFY 0 466# define EV_USE_INOTIFY 0
369#endif 467#endif
370 468
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
371#if !EV_USE_NANOSLEEP 477#if !EV_USE_NANOSLEEP
372# ifndef _WIN32 478/* hp-ux has it in sys/time.h, which we unconditionally include above */
479# if !defined _WIN32 && !defined __hpux
373# include <sys/select.h> 480# include <sys/select.h>
374# endif 481# endif
375#endif 482#endif
376 483
484#if EV_USE_LINUXAIO
485# include <sys/syscall.h>
486# if SYS_io_getevents && EV_USE_EPOLL /* linuxaio backend requires epoll backend */
487# define EV_NEED_SYSCALL 1
488# else
489# undef EV_USE_LINUXAIO
490# define EV_USE_LINUXAIO 0
491# endif
492#endif
493
494#if EV_USE_IOURING
495# include <sys/syscall.h>
496# if !SYS_io_uring_setup && __linux && !__alpha
497# define SYS_io_uring_setup 425
498# define SYS_io_uring_enter 426
499# define SYS_io_uring_wregister 427
500# endif
501# if SYS_io_uring_setup && EV_USE_EPOLL /* iouring backend requires epoll backend */
502# define EV_NEED_SYSCALL 1
503# else
504# undef EV_USE_IOURING
505# define EV_USE_IOURING 0
506# endif
507#endif
508
377#if EV_USE_INOTIFY 509#if EV_USE_INOTIFY
378# include <sys/utsname.h>
379# include <sys/statfs.h> 510# include <sys/statfs.h>
380# include <sys/inotify.h> 511# include <sys/inotify.h>
381/* 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 */
382# ifndef IN_DONT_FOLLOW 513# ifndef IN_DONT_FOLLOW
383# undef EV_USE_INOTIFY 514# undef EV_USE_INOTIFY
384# define EV_USE_INOTIFY 0 515# define EV_USE_INOTIFY 0
385# endif 516# endif
386#endif 517#endif
387 518
388#if EV_SELECT_IS_WINSOCKET
389# include <winsock.h>
390#endif
391
392#if EV_USE_EVENTFD 519#if EV_USE_EVENTFD
393/* 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 */
394# include <stdint.h> 521# include <stdint.h>
395# ifndef EFD_NONBLOCK 522# ifndef EFD_NONBLOCK
396# define EFD_NONBLOCK O_NONBLOCK 523# define EFD_NONBLOCK O_NONBLOCK
397# endif 524# endif
398# ifndef EFD_CLOEXEC 525# ifndef EFD_CLOEXEC
… …
400# define EFD_CLOEXEC O_CLOEXEC 527# define EFD_CLOEXEC O_CLOEXEC
401# else 528# else
402# define EFD_CLOEXEC 02000000 529# define EFD_CLOEXEC 02000000
403# endif 530# endif
404# endif 531# endif
405# ifdef __cplusplus
406extern "C" {
407# endif
408int eventfd (unsigned int initval, int flags); 532EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
409# ifdef __cplusplus
410}
411# endif
412#endif 533#endif
413 534
414#if EV_USE_SIGNALFD 535#if EV_USE_SIGNALFD
415/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 536/* our minimum requirement is glibc 2.7 which has the stub, but not the full header */
416# include <stdint.h> 537# include <stdint.h>
417# ifndef SFD_NONBLOCK 538# ifndef SFD_NONBLOCK
418# define SFD_NONBLOCK O_NONBLOCK 539# define SFD_NONBLOCK O_NONBLOCK
419# endif 540# endif
420# ifndef SFD_CLOEXEC 541# ifndef SFD_CLOEXEC
… …
422# define SFD_CLOEXEC O_CLOEXEC 543# define SFD_CLOEXEC O_CLOEXEC
423# else 544# else
424# define SFD_CLOEXEC 02000000 545# define SFD_CLOEXEC 02000000
425# endif 546# endif
426# endif 547# endif
427# ifdef __cplusplus
428extern "C" {
429# endif
430int signalfd (int fd, const sigset_t *mask, int flags); 548EV_CPP (extern "C") int (signalfd) (int fd, const sigset_t *mask, int flags);
431 549
432struct signalfd_siginfo 550struct signalfd_siginfo
433{ 551{
434 uint32_t ssi_signo; 552 uint32_t ssi_signo;
435 char pad[128 - sizeof (uint32_t)]; 553 char pad[128 - sizeof (uint32_t)];
436}; 554};
437# ifdef __cplusplus 555#endif
438} 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
439# endif 564# endif
440#endif 565#endif
441 566
442 567/*****************************************************************************/
443/**/
444 568
445#if EV_VERIFY >= 3 569#if EV_VERIFY >= 3
446# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 570# define EV_FREQUENT_CHECK ev_verify (EV_A)
447#else 571#else
448# define EV_FREQUENT_CHECK do { } while (0) 572# define EV_FREQUENT_CHECK do { } while (0)
449#endif 573#endif
450 574
451/* 575/*
452 * This is used to avoid floating point rounding problems. 576 * This is used to work around floating point rounding problems.
453 * It is added to ev_rt_now when scheduling periodics
454 * to ensure progress, time-wise, even when rounding
455 * errors are against us.
456 * This value is good at least till the year 4000. 577 * This value is good at least till the year 4000.
457 * Better solutions welcome.
458 */ 578 */
459#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 */
460 581
461#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) */
462#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) */
463 584
585/* find a portable timestamp that is "always" in the future but fits into time_t.
586 * this is quite hard, and we are mostly guessing - we handle 32 bit signed/unsigned time_t,
587 * and sizes larger than 32 bit, and maybe the unlikely floating point time_t */
588#define EV_TSTAMP_HUGE \
589 (sizeof (time_t) >= 8 ? 10000000000000. \
590 : 0 < (time_t)4294967295 ? 4294967295. \
591 : 2147483647.) \
592
593#ifndef EV_TS_CONST
594# define EV_TS_CONST(nv) nv
595# define EV_TS_TO_MSEC(a) a * 1e3 + 0.9999
596# define EV_TS_FROM_USEC(us) us * 1e-6
597# define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
598# define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
599# define EV_TV_GET(tv) ((tv).tv_sec + (tv).tv_usec * 1e-6)
600# define EV_TS_GET(ts) ((ts).tv_sec + (ts).tv_nsec * 1e-9)
601#endif
602
603/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
604/* ECB.H BEGIN */
605/*
606 * libecb - http://software.schmorp.de/pkg/libecb
607 *
608 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
609 * Copyright (©) 2011 Emanuele Giaquinta
610 * All rights reserved.
611 *
612 * Redistribution and use in source and binary forms, with or without modifica-
613 * tion, are permitted provided that the following conditions are met:
614 *
615 * 1. Redistributions of source code must retain the above copyright notice,
616 * this list of conditions and the following disclaimer.
617 *
618 * 2. Redistributions in binary form must reproduce the above copyright
619 * notice, this list of conditions and the following disclaimer in the
620 * documentation and/or other materials provided with the distribution.
621 *
622 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
623 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
624 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
625 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
626 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
627 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
628 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
629 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
630 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
631 * OF THE POSSIBILITY OF SUCH DAMAGE.
632 *
633 * Alternatively, the contents of this file may be used under the terms of
634 * the GNU General Public License ("GPL") version 2 or any later version,
635 * in which case the provisions of the GPL are applicable instead of
636 * the above. If you wish to allow the use of your version of this file
637 * only under the terms of the GPL and not to allow others to use your
638 * version of this file under the BSD license, indicate your decision
639 * by deleting the provisions above and replace them with the notice
640 * and other provisions required by the GPL. If you do not delete the
641 * provisions above, a recipient may use your version of this file under
642 * either the BSD or the GPL.
643 */
644
645#ifndef ECB_H
646#define ECB_H
647
648/* 16 bits major, 16 bits minor */
649#define ECB_VERSION 0x00010006
650
651#ifdef _WIN32
652 typedef signed char int8_t;
653 typedef unsigned char uint8_t;
654 typedef signed short int16_t;
655 typedef unsigned short uint16_t;
656 typedef signed int int32_t;
657 typedef unsigned int uint32_t;
464#if __GNUC__ >= 4 658 #if __GNUC__
465# define expect(expr,value) __builtin_expect ((expr),(value)) 659 typedef signed long long int64_t;
466# define noinline __attribute__ ((noinline)) 660 typedef unsigned long long uint64_t;
661 #else /* _MSC_VER || __BORLANDC__ */
662 typedef signed __int64 int64_t;
663 typedef unsigned __int64 uint64_t;
664 #endif
665 #ifdef _WIN64
666 #define ECB_PTRSIZE 8
667 typedef uint64_t uintptr_t;
668 typedef int64_t intptr_t;
669 #else
670 #define ECB_PTRSIZE 4
671 typedef uint32_t uintptr_t;
672 typedef int32_t intptr_t;
673 #endif
467#else 674#else
468# define expect(expr,value) (expr) 675 #include <inttypes.h>
469# define noinline 676 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
470# if __STDC_VERSION__ < 199901L && __GNUC__ < 2 677 #define ECB_PTRSIZE 8
471# define inline 678 #else
679 #define ECB_PTRSIZE 4
680 #endif
472# endif 681#endif
682
683#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
684#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
685
686/* work around x32 idiocy by defining proper macros */
687#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
688 #if _ILP32
689 #define ECB_AMD64_X32 1
690 #else
691 #define ECB_AMD64 1
473#endif 692 #endif
693#endif
474 694
475#define expect_false(expr) expect ((expr) != 0, 0) 695/* many compilers define _GNUC_ to some versions but then only implement
476#define expect_true(expr) expect ((expr) != 0, 1) 696 * what their idiot authors think are the "more important" extensions,
477#define inline_size static inline 697 * causing enormous grief in return for some better fake benchmark numbers.
478 698 * or so.
479#if EV_MINIMAL 699 * we try to detect these and simply assume they are not gcc - if they have
480# define inline_speed static noinline 700 * an issue with that they should have done it right in the first place.
701 */
702#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
703 #define ECB_GCC_VERSION(major,minor) 0
481#else 704#else
705 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
706#endif
707
708#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
709
710#if __clang__ && defined __has_builtin
711 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
712#else
713 #define ECB_CLANG_BUILTIN(x) 0
714#endif
715
716#if __clang__ && defined __has_extension
717 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
718#else
719 #define ECB_CLANG_EXTENSION(x) 0
720#endif
721
722#define ECB_CPP (__cplusplus+0)
723#define ECB_CPP11 (__cplusplus >= 201103L)
724#define ECB_CPP14 (__cplusplus >= 201402L)
725#define ECB_CPP17 (__cplusplus >= 201703L)
726
727#if ECB_CPP
728 #define ECB_C 0
729 #define ECB_STDC_VERSION 0
730#else
731 #define ECB_C 1
732 #define ECB_STDC_VERSION __STDC_VERSION__
733#endif
734
735#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
736#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
737#define ECB_C17 (ECB_STDC_VERSION >= 201710L)
738
739#if ECB_CPP
740 #define ECB_EXTERN_C extern "C"
741 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
742 #define ECB_EXTERN_C_END }
743#else
744 #define ECB_EXTERN_C extern
745 #define ECB_EXTERN_C_BEG
746 #define ECB_EXTERN_C_END
747#endif
748
749/*****************************************************************************/
750
751/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
752/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
753
754#if ECB_NO_THREADS
755 #define ECB_NO_SMP 1
756#endif
757
758#if ECB_NO_SMP
759 #define ECB_MEMORY_FENCE do { } while (0)
760#endif
761
762/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
763#if __xlC__ && ECB_CPP
764 #include <builtins.h>
765#endif
766
767#if 1400 <= _MSC_VER
768 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
769#endif
770
771#ifndef ECB_MEMORY_FENCE
772 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
773 #define ECB_MEMORY_FENCE_RELAXED __asm__ __volatile__ ("" : : : "memory")
774 #if __i386 || __i386__
775 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
776 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
777 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
778 #elif ECB_GCC_AMD64
779 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
780 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
781 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
782 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
783 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
784 #elif defined __ARM_ARCH_2__ \
785 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
786 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
787 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
788 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
789 || defined __ARM_ARCH_5TEJ__
790 /* should not need any, unless running old code on newer cpu - arm doesn't support that */
791 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
792 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
793 || defined __ARM_ARCH_6T2__
794 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
795 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
796 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
797 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
798 #elif __aarch64__
799 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
800 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
801 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
802 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
803 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
804 #elif defined __s390__ || defined __s390x__
805 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
806 #elif defined __mips__
807 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
808 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
809 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
810 #elif defined __alpha__
811 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
812 #elif defined __hppa__
813 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
814 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
815 #elif defined __ia64__
816 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
817 #elif defined __m68k__
818 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
819 #elif defined __m88k__
820 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
821 #elif defined __sh__
822 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
823 #endif
824 #endif
825#endif
826
827#ifndef ECB_MEMORY_FENCE
828 #if ECB_GCC_VERSION(4,7)
829 /* see comment below (stdatomic.h) about the C11 memory model. */
830 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
831 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
832 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
833 #define ECB_MEMORY_FENCE_RELAXED __atomic_thread_fence (__ATOMIC_RELAXED)
834
835 #elif ECB_CLANG_EXTENSION(c_atomic)
836 /* see comment below (stdatomic.h) about the C11 memory model. */
837 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
838 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
839 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
840 #define ECB_MEMORY_FENCE_RELAXED __c11_atomic_thread_fence (__ATOMIC_RELAXED)
841
842 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
843 #define ECB_MEMORY_FENCE __sync_synchronize ()
844 #elif _MSC_VER >= 1500 /* VC++ 2008 */
845 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
846 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
847 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
848 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
849 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
850 #elif _MSC_VER >= 1400 /* VC++ 2005 */
851 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
852 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
853 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
854 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
855 #elif defined _WIN32
856 #include <WinNT.h>
857 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
858 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
859 #include <mbarrier.h>
860 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
861 #define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier ()
862 #define ECB_MEMORY_FENCE_RELEASE __machine_rel_barrier ()
863 #define ECB_MEMORY_FENCE_RELAXED __compiler_barrier ()
864 #elif __xlC__
865 #define ECB_MEMORY_FENCE __sync ()
866 #endif
867#endif
868
869#ifndef ECB_MEMORY_FENCE
870 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
871 /* we assume that these memory fences work on all variables/all memory accesses, */
872 /* not just C11 atomics and atomic accesses */
873 #include <stdatomic.h>
874 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
875 #define ECB_MEMORY_FENCE_ACQUIRE atomic_thread_fence (memory_order_acquire)
876 #define ECB_MEMORY_FENCE_RELEASE atomic_thread_fence (memory_order_release)
877 #endif
878#endif
879
880#ifndef ECB_MEMORY_FENCE
881 #if !ECB_AVOID_PTHREADS
882 /*
883 * if you get undefined symbol references to pthread_mutex_lock,
884 * or failure to find pthread.h, then you should implement
885 * the ECB_MEMORY_FENCE operations for your cpu/compiler
886 * OR provide pthread.h and link against the posix thread library
887 * of your system.
888 */
889 #include <pthread.h>
890 #define ECB_NEEDS_PTHREADS 1
891 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
892
893 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
894 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
895 #endif
896#endif
897
898#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
899 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
900#endif
901
902#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
903 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
904#endif
905
906#if !defined ECB_MEMORY_FENCE_RELAXED && defined ECB_MEMORY_FENCE
907 #define ECB_MEMORY_FENCE_RELAXED ECB_MEMORY_FENCE /* very heavy-handed */
908#endif
909
910/*****************************************************************************/
911
912#if ECB_CPP
913 #define ecb_inline static inline
914#elif ECB_GCC_VERSION(2,5)
915 #define ecb_inline static __inline__
916#elif ECB_C99
917 #define ecb_inline static inline
918#else
919 #define ecb_inline static
920#endif
921
922#if ECB_GCC_VERSION(3,3)
923 #define ecb_restrict __restrict__
924#elif ECB_C99
925 #define ecb_restrict restrict
926#else
927 #define ecb_restrict
928#endif
929
930typedef int ecb_bool;
931
932#define ECB_CONCAT_(a, b) a ## b
933#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
934#define ECB_STRINGIFY_(a) # a
935#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
936#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
937
938#define ecb_function_ ecb_inline
939
940#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
941 #define ecb_attribute(attrlist) __attribute__ (attrlist)
942#else
943 #define ecb_attribute(attrlist)
944#endif
945
946#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
947 #define ecb_is_constant(expr) __builtin_constant_p (expr)
948#else
949 /* possible C11 impl for integral types
950 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
951 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
952
953 #define ecb_is_constant(expr) 0
954#endif
955
956#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
957 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
958#else
959 #define ecb_expect(expr,value) (expr)
960#endif
961
962#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
963 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
964#else
965 #define ecb_prefetch(addr,rw,locality)
966#endif
967
968/* no emulation for ecb_decltype */
969#if ECB_CPP11
970 // older implementations might have problems with decltype(x)::type, work around it
971 template<class T> struct ecb_decltype_t { typedef T type; };
972 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
973#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
974 #define ecb_decltype(x) __typeof__ (x)
975#endif
976
977#if _MSC_VER >= 1300
978 #define ecb_deprecated __declspec (deprecated)
979#else
980 #define ecb_deprecated ecb_attribute ((__deprecated__))
981#endif
982
983#if _MSC_VER >= 1500
984 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
985#elif ECB_GCC_VERSION(4,5)
986 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
987#else
988 #define ecb_deprecated_message(msg) ecb_deprecated
989#endif
990
991#if _MSC_VER >= 1400
992 #define ecb_noinline __declspec (noinline)
993#else
994 #define ecb_noinline ecb_attribute ((__noinline__))
995#endif
996
997#define ecb_unused ecb_attribute ((__unused__))
998#define ecb_const ecb_attribute ((__const__))
999#define ecb_pure ecb_attribute ((__pure__))
1000
1001#if ECB_C11 || __IBMC_NORETURN
1002 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
1003 #define ecb_noreturn _Noreturn
1004#elif ECB_CPP11
1005 #define ecb_noreturn [[noreturn]]
1006#elif _MSC_VER >= 1200
1007 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
1008 #define ecb_noreturn __declspec (noreturn)
1009#else
1010 #define ecb_noreturn ecb_attribute ((__noreturn__))
1011#endif
1012
1013#if ECB_GCC_VERSION(4,3)
1014 #define ecb_artificial ecb_attribute ((__artificial__))
1015 #define ecb_hot ecb_attribute ((__hot__))
1016 #define ecb_cold ecb_attribute ((__cold__))
1017#else
1018 #define ecb_artificial
1019 #define ecb_hot
1020 #define ecb_cold
1021#endif
1022
1023/* put around conditional expressions if you are very sure that the */
1024/* expression is mostly true or mostly false. note that these return */
1025/* booleans, not the expression. */
1026#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
1027#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
1028/* for compatibility to the rest of the world */
1029#define ecb_likely(expr) ecb_expect_true (expr)
1030#define ecb_unlikely(expr) ecb_expect_false (expr)
1031
1032/* count trailing zero bits and count # of one bits */
1033#if ECB_GCC_VERSION(3,4) \
1034 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
1035 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
1036 && ECB_CLANG_BUILTIN(__builtin_popcount))
1037 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
1038 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
1039 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
1040 #define ecb_ctz32(x) __builtin_ctz (x)
1041 #define ecb_ctz64(x) __builtin_ctzll (x)
1042 #define ecb_popcount32(x) __builtin_popcount (x)
1043 /* no popcountll */
1044#else
1045 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
1046 ecb_function_ ecb_const int
1047 ecb_ctz32 (uint32_t x)
1048 {
1049#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1050 unsigned long r;
1051 _BitScanForward (&r, x);
1052 return (int)r;
1053#else
1054 int r = 0;
1055
1056 x &= ~x + 1; /* this isolates the lowest bit */
1057
1058#if ECB_branchless_on_i386
1059 r += !!(x & 0xaaaaaaaa) << 0;
1060 r += !!(x & 0xcccccccc) << 1;
1061 r += !!(x & 0xf0f0f0f0) << 2;
1062 r += !!(x & 0xff00ff00) << 3;
1063 r += !!(x & 0xffff0000) << 4;
1064#else
1065 if (x & 0xaaaaaaaa) r += 1;
1066 if (x & 0xcccccccc) r += 2;
1067 if (x & 0xf0f0f0f0) r += 4;
1068 if (x & 0xff00ff00) r += 8;
1069 if (x & 0xffff0000) r += 16;
1070#endif
1071
1072 return r;
1073#endif
1074 }
1075
1076 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
1077 ecb_function_ ecb_const int
1078 ecb_ctz64 (uint64_t x)
1079 {
1080#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1081 unsigned long r;
1082 _BitScanForward64 (&r, x);
1083 return (int)r;
1084#else
1085 int shift = x & 0xffffffff ? 0 : 32;
1086 return ecb_ctz32 (x >> shift) + shift;
1087#endif
1088 }
1089
1090 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
1091 ecb_function_ ecb_const int
1092 ecb_popcount32 (uint32_t x)
1093 {
1094 x -= (x >> 1) & 0x55555555;
1095 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
1096 x = ((x >> 4) + x) & 0x0f0f0f0f;
1097 x *= 0x01010101;
1098
1099 return x >> 24;
1100 }
1101
1102 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
1103 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
1104 {
1105#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1106 unsigned long r;
1107 _BitScanReverse (&r, x);
1108 return (int)r;
1109#else
1110 int r = 0;
1111
1112 if (x >> 16) { x >>= 16; r += 16; }
1113 if (x >> 8) { x >>= 8; r += 8; }
1114 if (x >> 4) { x >>= 4; r += 4; }
1115 if (x >> 2) { x >>= 2; r += 2; }
1116 if (x >> 1) { r += 1; }
1117
1118 return r;
1119#endif
1120 }
1121
1122 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
1123 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
1124 {
1125#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1126 unsigned long r;
1127 _BitScanReverse64 (&r, x);
1128 return (int)r;
1129#else
1130 int r = 0;
1131
1132 if (x >> 32) { x >>= 32; r += 32; }
1133
1134 return r + ecb_ld32 (x);
1135#endif
1136 }
1137#endif
1138
1139ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
1140ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
1141ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
1142ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
1143
1144ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
1145ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
1146{
1147 return ( (x * 0x0802U & 0x22110U)
1148 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
1149}
1150
1151ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
1152ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
1153{
1154 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
1155 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
1156 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
1157 x = ( x >> 8 ) | ( x << 8);
1158
1159 return x;
1160}
1161
1162ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
1163ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
1164{
1165 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
1166 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
1167 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
1168 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
1169 x = ( x >> 16 ) | ( x << 16);
1170
1171 return x;
1172}
1173
1174/* popcount64 is only available on 64 bit cpus as gcc builtin */
1175/* so for this version we are lazy */
1176ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
1177ecb_function_ ecb_const int
1178ecb_popcount64 (uint64_t x)
1179{
1180 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
1181}
1182
1183ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
1184ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
1185ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
1186ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
1187ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
1188ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
1189ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
1190ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
1191
1192ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
1193ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
1194ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
1195ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
1196ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
1197ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
1198ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
1199ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
1200
1201#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1202 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1203 #define ecb_bswap16(x) __builtin_bswap16 (x)
1204 #else
1205 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1206 #endif
1207 #define ecb_bswap32(x) __builtin_bswap32 (x)
1208 #define ecb_bswap64(x) __builtin_bswap64 (x)
1209#elif _MSC_VER
1210 #include <stdlib.h>
1211 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1212 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1213 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
1214#else
1215 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
1216 ecb_function_ ecb_const uint16_t
1217 ecb_bswap16 (uint16_t x)
1218 {
1219 return ecb_rotl16 (x, 8);
1220 }
1221
1222 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
1223 ecb_function_ ecb_const uint32_t
1224 ecb_bswap32 (uint32_t x)
1225 {
1226 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
1227 }
1228
1229 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
1230 ecb_function_ ecb_const uint64_t
1231 ecb_bswap64 (uint64_t x)
1232 {
1233 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
1234 }
1235#endif
1236
1237#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
1238 #define ecb_unreachable() __builtin_unreachable ()
1239#else
1240 /* this seems to work fine, but gcc always emits a warning for it :/ */
1241 ecb_inline ecb_noreturn void ecb_unreachable (void);
1242 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
1243#endif
1244
1245/* try to tell the compiler that some condition is definitely true */
1246#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
1247
1248ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
1249ecb_inline ecb_const uint32_t
1250ecb_byteorder_helper (void)
1251{
1252 /* the union code still generates code under pressure in gcc, */
1253 /* but less than using pointers, and always seems to */
1254 /* successfully return a constant. */
1255 /* the reason why we have this horrible preprocessor mess */
1256 /* is to avoid it in all cases, at least on common architectures */
1257 /* or when using a recent enough gcc version (>= 4.6) */
1258#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1259 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1260 #define ECB_LITTLE_ENDIAN 1
1261 return 0x44332211;
1262#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1263 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1264 #define ECB_BIG_ENDIAN 1
1265 return 0x11223344;
1266#else
1267 union
1268 {
1269 uint8_t c[4];
1270 uint32_t u;
1271 } u = { 0x11, 0x22, 0x33, 0x44 };
1272 return u.u;
1273#endif
1274}
1275
1276ecb_inline ecb_const ecb_bool ecb_big_endian (void);
1277ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
1278ecb_inline ecb_const ecb_bool ecb_little_endian (void);
1279ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
1280
1281#if ECB_GCC_VERSION(3,0) || ECB_C99
1282 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1283#else
1284 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1285#endif
1286
1287#if ECB_CPP
1288 template<typename T>
1289 static inline T ecb_div_rd (T val, T div)
1290 {
1291 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1292 }
1293 template<typename T>
1294 static inline T ecb_div_ru (T val, T div)
1295 {
1296 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1297 }
1298#else
1299 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1300 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1301#endif
1302
1303#if ecb_cplusplus_does_not_suck
1304 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1305 template<typename T, int N>
1306 static inline int ecb_array_length (const T (&arr)[N])
1307 {
1308 return N;
1309 }
1310#else
1311 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1312#endif
1313
1314ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1315ecb_function_ ecb_const uint32_t
1316ecb_binary16_to_binary32 (uint32_t x)
1317{
1318 unsigned int s = (x & 0x8000) << (31 - 15);
1319 int e = (x >> 10) & 0x001f;
1320 unsigned int m = x & 0x03ff;
1321
1322 if (ecb_expect_false (e == 31))
1323 /* infinity or NaN */
1324 e = 255 - (127 - 15);
1325 else if (ecb_expect_false (!e))
1326 {
1327 if (ecb_expect_true (!m))
1328 /* zero, handled by code below by forcing e to 0 */
1329 e = 0 - (127 - 15);
1330 else
1331 {
1332 /* subnormal, renormalise */
1333 unsigned int s = 10 - ecb_ld32 (m);
1334
1335 m = (m << s) & 0x3ff; /* mask implicit bit */
1336 e -= s - 1;
1337 }
1338 }
1339
1340 /* e and m now are normalised, or zero, (or inf or nan) */
1341 e += 127 - 15;
1342
1343 return s | (e << 23) | (m << (23 - 10));
1344}
1345
1346ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1347ecb_function_ ecb_const uint16_t
1348ecb_binary32_to_binary16 (uint32_t x)
1349{
1350 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1351 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1352 unsigned int m = x & 0x007fffff;
1353
1354 x &= 0x7fffffff;
1355
1356 /* if it's within range of binary16 normals, use fast path */
1357 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1358 {
1359 /* mantissa round-to-even */
1360 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1361
1362 /* handle overflow */
1363 if (ecb_expect_false (m >= 0x00800000))
1364 {
1365 m >>= 1;
1366 e += 1;
1367 }
1368
1369 return s | (e << 10) | (m >> (23 - 10));
1370 }
1371
1372 /* handle large numbers and infinity */
1373 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1374 return s | 0x7c00;
1375
1376 /* handle zero, subnormals and small numbers */
1377 if (ecb_expect_true (x < 0x38800000))
1378 {
1379 /* zero */
1380 if (ecb_expect_true (!x))
1381 return s;
1382
1383 /* handle subnormals */
1384
1385 /* too small, will be zero */
1386 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1387 return s;
1388
1389 m |= 0x00800000; /* make implicit bit explicit */
1390
1391 /* very tricky - we need to round to the nearest e (+10) bit value */
1392 {
1393 unsigned int bits = 14 - e;
1394 unsigned int half = (1 << (bits - 1)) - 1;
1395 unsigned int even = (m >> bits) & 1;
1396
1397 /* if this overflows, we will end up with a normalised number */
1398 m = (m + half + even) >> bits;
1399 }
1400
1401 return s | m;
1402 }
1403
1404 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1405 m >>= 13;
1406
1407 return s | 0x7c00 | m | !m;
1408}
1409
1410/*******************************************************************************/
1411/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1412
1413/* basically, everything uses "ieee pure-endian" floating point numbers */
1414/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1415#if 0 \
1416 || __i386 || __i386__ \
1417 || ECB_GCC_AMD64 \
1418 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1419 || defined __s390__ || defined __s390x__ \
1420 || defined __mips__ \
1421 || defined __alpha__ \
1422 || defined __hppa__ \
1423 || defined __ia64__ \
1424 || defined __m68k__ \
1425 || defined __m88k__ \
1426 || defined __sh__ \
1427 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1428 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1429 || defined __aarch64__
1430 #define ECB_STDFP 1
1431 #include <string.h> /* for memcpy */
1432#else
1433 #define ECB_STDFP 0
1434#endif
1435
1436#ifndef ECB_NO_LIBM
1437
1438 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1439
1440 /* only the oldest of old doesn't have this one. solaris. */
1441 #ifdef INFINITY
1442 #define ECB_INFINITY INFINITY
1443 #else
1444 #define ECB_INFINITY HUGE_VAL
1445 #endif
1446
1447 #ifdef NAN
1448 #define ECB_NAN NAN
1449 #else
1450 #define ECB_NAN ECB_INFINITY
1451 #endif
1452
1453 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1454 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1455 #define ecb_frexpf(x,e) frexpf ((x), (e))
1456 #else
1457 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1458 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1459 #endif
1460
1461 /* convert a float to ieee single/binary32 */
1462 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1463 ecb_function_ ecb_const uint32_t
1464 ecb_float_to_binary32 (float x)
1465 {
1466 uint32_t r;
1467
1468 #if ECB_STDFP
1469 memcpy (&r, &x, 4);
1470 #else
1471 /* slow emulation, works for anything but -0 */
1472 uint32_t m;
1473 int e;
1474
1475 if (x == 0e0f ) return 0x00000000U;
1476 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1477 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1478 if (x != x ) return 0x7fbfffffU;
1479
1480 m = ecb_frexpf (x, &e) * 0x1000000U;
1481
1482 r = m & 0x80000000U;
1483
1484 if (r)
1485 m = -m;
1486
1487 if (e <= -126)
1488 {
1489 m &= 0xffffffU;
1490 m >>= (-125 - e);
1491 e = -126;
1492 }
1493
1494 r |= (e + 126) << 23;
1495 r |= m & 0x7fffffU;
1496 #endif
1497
1498 return r;
1499 }
1500
1501 /* converts an ieee single/binary32 to a float */
1502 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1503 ecb_function_ ecb_const float
1504 ecb_binary32_to_float (uint32_t x)
1505 {
1506 float r;
1507
1508 #if ECB_STDFP
1509 memcpy (&r, &x, 4);
1510 #else
1511 /* emulation, only works for normals and subnormals and +0 */
1512 int neg = x >> 31;
1513 int e = (x >> 23) & 0xffU;
1514
1515 x &= 0x7fffffU;
1516
1517 if (e)
1518 x |= 0x800000U;
1519 else
1520 e = 1;
1521
1522 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1523 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1524
1525 r = neg ? -r : r;
1526 #endif
1527
1528 return r;
1529 }
1530
1531 /* convert a double to ieee double/binary64 */
1532 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1533 ecb_function_ ecb_const uint64_t
1534 ecb_double_to_binary64 (double x)
1535 {
1536 uint64_t r;
1537
1538 #if ECB_STDFP
1539 memcpy (&r, &x, 8);
1540 #else
1541 /* slow emulation, works for anything but -0 */
1542 uint64_t m;
1543 int e;
1544
1545 if (x == 0e0 ) return 0x0000000000000000U;
1546 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1547 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1548 if (x != x ) return 0X7ff7ffffffffffffU;
1549
1550 m = frexp (x, &e) * 0x20000000000000U;
1551
1552 r = m & 0x8000000000000000;;
1553
1554 if (r)
1555 m = -m;
1556
1557 if (e <= -1022)
1558 {
1559 m &= 0x1fffffffffffffU;
1560 m >>= (-1021 - e);
1561 e = -1022;
1562 }
1563
1564 r |= ((uint64_t)(e + 1022)) << 52;
1565 r |= m & 0xfffffffffffffU;
1566 #endif
1567
1568 return r;
1569 }
1570
1571 /* converts an ieee double/binary64 to a double */
1572 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1573 ecb_function_ ecb_const double
1574 ecb_binary64_to_double (uint64_t x)
1575 {
1576 double r;
1577
1578 #if ECB_STDFP
1579 memcpy (&r, &x, 8);
1580 #else
1581 /* emulation, only works for normals and subnormals and +0 */
1582 int neg = x >> 63;
1583 int e = (x >> 52) & 0x7ffU;
1584
1585 x &= 0xfffffffffffffU;
1586
1587 if (e)
1588 x |= 0x10000000000000U;
1589 else
1590 e = 1;
1591
1592 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1593 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1594
1595 r = neg ? -r : r;
1596 #endif
1597
1598 return r;
1599 }
1600
1601 /* convert a float to ieee half/binary16 */
1602 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1603 ecb_function_ ecb_const uint16_t
1604 ecb_float_to_binary16 (float x)
1605 {
1606 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1607 }
1608
1609 /* convert an ieee half/binary16 to float */
1610 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1611 ecb_function_ ecb_const float
1612 ecb_binary16_to_float (uint16_t x)
1613 {
1614 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1615 }
1616
1617#endif
1618
1619#endif
1620
1621/* ECB.H END */
1622
1623#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1624/* if your architecture doesn't need memory fences, e.g. because it is
1625 * single-cpu/core, or if you use libev in a project that doesn't use libev
1626 * from multiple threads, then you can define ECB_NO_THREADS when compiling
1627 * libev, in which cases the memory fences become nops.
1628 * alternatively, you can remove this #error and link against libpthread,
1629 * which will then provide the memory fences.
1630 */
1631# error "memory fences not defined for your architecture, please report"
1632#endif
1633
1634#ifndef ECB_MEMORY_FENCE
1635# define ECB_MEMORY_FENCE do { } while (0)
1636# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1637# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1638#endif
1639
1640#define inline_size ecb_inline
1641
1642#if EV_FEATURE_CODE
482# define inline_speed static inline 1643# define inline_speed ecb_inline
1644#else
1645# define inline_speed ecb_noinline static
483#endif 1646#endif
1647
1648/*****************************************************************************/
1649/* raw syscall wrappers */
1650
1651#if EV_NEED_SYSCALL
1652
1653#include <sys/syscall.h>
1654
1655/*
1656 * define some syscall wrappers for common architectures
1657 * this is mostly for nice looks during debugging, not performance.
1658 * our syscalls return < 0, not == -1, on error. which is good
1659 * enough for linux aio.
1660 * TODO: arm is also common nowadays, maybe even mips and x86
1661 * TODO: after implementing this, it suddenly looks like overkill, but its hard to remove...
1662 */
1663#if __GNUC__ && __linux && ECB_AMD64 && !EV_FEATURE_CODE
1664 /* the costly errno access probably kills this for size optimisation */
1665
1666 #define ev_syscall(nr,narg,arg1,arg2,arg3,arg4,arg5,arg6) \
1667 ({ \
1668 long res; \
1669 register unsigned long r6 __asm__ ("r9" ); \
1670 register unsigned long r5 __asm__ ("r8" ); \
1671 register unsigned long r4 __asm__ ("r10"); \
1672 register unsigned long r3 __asm__ ("rdx"); \
1673 register unsigned long r2 __asm__ ("rsi"); \
1674 register unsigned long r1 __asm__ ("rdi"); \
1675 if (narg >= 6) r6 = (unsigned long)(arg6); \
1676 if (narg >= 5) r5 = (unsigned long)(arg5); \
1677 if (narg >= 4) r4 = (unsigned long)(arg4); \
1678 if (narg >= 3) r3 = (unsigned long)(arg3); \
1679 if (narg >= 2) r2 = (unsigned long)(arg2); \
1680 if (narg >= 1) r1 = (unsigned long)(arg1); \
1681 __asm__ __volatile__ ( \
1682 "syscall\n\t" \
1683 : "=a" (res) \
1684 : "0" (nr), "r" (r1), "r" (r2), "r" (r3), "r" (r4), "r" (r5) \
1685 : "cc", "r11", "cx", "memory"); \
1686 errno = -res; \
1687 res; \
1688 })
1689
1690#endif
1691
1692#ifdef ev_syscall
1693 #define ev_syscall0(nr) ev_syscall (nr, 0, 0, 0, 0, 0, 0, 0)
1694 #define ev_syscall1(nr,arg1) ev_syscall (nr, 1, arg1, 0, 0, 0, 0, 0)
1695 #define ev_syscall2(nr,arg1,arg2) ev_syscall (nr, 2, arg1, arg2, 0, 0, 0, 0)
1696 #define ev_syscall3(nr,arg1,arg2,arg3) ev_syscall (nr, 3, arg1, arg2, arg3, 0, 0, 0)
1697 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) ev_syscall (nr, 3, arg1, arg2, arg3, arg4, 0, 0)
1698 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) ev_syscall (nr, 5, arg1, arg2, arg3, arg4, arg5, 0)
1699 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) ev_syscall (nr, 6, arg1, arg2, arg3, arg4, arg5,arg6)
1700#else
1701 #define ev_syscall0(nr) syscall (nr)
1702 #define ev_syscall1(nr,arg1) syscall (nr, arg1)
1703 #define ev_syscall2(nr,arg1,arg2) syscall (nr, arg1, arg2)
1704 #define ev_syscall3(nr,arg1,arg2,arg3) syscall (nr, arg1, arg2, arg3)
1705 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) syscall (nr, arg1, arg2, arg3, arg4)
1706 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) syscall (nr, arg1, arg2, arg3, arg4, arg5)
1707 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) syscall (nr, arg1, arg2, arg3, arg4, arg5,arg6)
1708#endif
1709
1710#endif
1711
1712/*****************************************************************************/
484 1713
485#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1714#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
486 1715
487#if EV_MINPRI == EV_MAXPRI 1716#if EV_MINPRI == EV_MAXPRI
488# define ABSPRI(w) (((W)w), 0) 1717# define ABSPRI(w) (((W)w), 0)
489#else 1718#else
490# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1719# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
491#endif 1720#endif
492 1721
493#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1722#define EMPTY /* required for microsofts broken pseudo-c compiler */
494#define EMPTY2(a,b) /* used to suppress some warnings */
495 1723
496typedef ev_watcher *W; 1724typedef ev_watcher *W;
497typedef ev_watcher_list *WL; 1725typedef ev_watcher_list *WL;
498typedef ev_watcher_time *WT; 1726typedef ev_watcher_time *WT;
499 1727
500#define ev_active(w) ((W)(w))->active 1728#define ev_active(w) ((W)(w))->active
501#define ev_at(w) ((WT)(w))->at 1729#define ev_at(w) ((WT)(w))->at
502 1730
503#if EV_USE_REALTIME 1731#if EV_USE_REALTIME
504/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 1732/* sig_atomic_t is used to avoid per-thread variables or locking but still */
505/* giving it a reasonably high chance of working on typical architetcures */ 1733/* giving it a reasonably high chance of working on typical architectures */
506static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 1734static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
507#endif 1735#endif
508 1736
509#if EV_USE_MONOTONIC 1737#if EV_USE_MONOTONIC
510static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 1738static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
… …
524# include "ev_win32.c" 1752# include "ev_win32.c"
525#endif 1753#endif
526 1754
527/*****************************************************************************/ 1755/*****************************************************************************/
528 1756
1757#if EV_USE_LINUXAIO
1758# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
1759#endif
1760
1761/* define a suitable floor function (only used by periodics atm) */
1762
1763#if EV_USE_FLOOR
1764# include <math.h>
1765# define ev_floor(v) floor (v)
1766#else
1767
1768#include <float.h>
1769
1770/* a floor() replacement function, should be independent of ev_tstamp type */
1771ecb_noinline
1772static ev_tstamp
1773ev_floor (ev_tstamp v)
1774{
1775 /* the choice of shift factor is not terribly important */
1776#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1777 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1778#else
1779 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1780#endif
1781
1782 /* special treatment for negative arguments */
1783 if (ecb_expect_false (v < 0.))
1784 {
1785 ev_tstamp f = -ev_floor (-v);
1786
1787 return f - (f == v ? 0 : 1);
1788 }
1789
1790 /* argument too large for an unsigned long? then reduce it */
1791 if (ecb_expect_false (v >= shift))
1792 {
1793 ev_tstamp f;
1794
1795 if (v == v - 1.)
1796 return v; /* very large numbers are assumed to be integer */
1797
1798 f = shift * ev_floor (v * (1. / shift));
1799 return f + ev_floor (v - f);
1800 }
1801
1802 /* fits into an unsigned long */
1803 return (unsigned long)v;
1804}
1805
1806#endif
1807
1808/*****************************************************************************/
1809
1810#ifdef __linux
1811# include <sys/utsname.h>
1812#endif
1813
1814ecb_noinline ecb_cold
1815static unsigned int
1816ev_linux_version (void)
1817{
1818#ifdef __linux
1819 unsigned int v = 0;
1820 struct utsname buf;
1821 int i;
1822 char *p = buf.release;
1823
1824 if (uname (&buf))
1825 return 0;
1826
1827 for (i = 3+1; --i; )
1828 {
1829 unsigned int c = 0;
1830
1831 for (;;)
1832 {
1833 if (*p >= '0' && *p <= '9')
1834 c = c * 10 + *p++ - '0';
1835 else
1836 {
1837 p += *p == '.';
1838 break;
1839 }
1840 }
1841
1842 v = (v << 8) | c;
1843 }
1844
1845 return v;
1846#else
1847 return 0;
1848#endif
1849}
1850
1851/*****************************************************************************/
1852
1853#if EV_AVOID_STDIO
1854ecb_noinline ecb_cold
1855static void
1856ev_printerr (const char *msg)
1857{
1858 write (STDERR_FILENO, msg, strlen (msg));
1859}
1860#endif
1861
529static void (*syserr_cb)(const char *msg); 1862static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
530 1863
1864ecb_cold
531void 1865void
532ev_set_syserr_cb (void (*cb)(const char *msg)) 1866ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
533{ 1867{
534 syserr_cb = cb; 1868 syserr_cb = cb;
535} 1869}
536 1870
537static void noinline 1871ecb_noinline ecb_cold
1872static void
538ev_syserr (const char *msg) 1873ev_syserr (const char *msg)
539{ 1874{
540 if (!msg) 1875 if (!msg)
541 msg = "(libev) system error"; 1876 msg = "(libev) system error";
542 1877
543 if (syserr_cb) 1878 if (syserr_cb)
544 syserr_cb (msg); 1879 syserr_cb (msg);
545 else 1880 else
546 { 1881 {
1882#if EV_AVOID_STDIO
1883 ev_printerr (msg);
1884 ev_printerr (": ");
1885 ev_printerr (strerror (errno));
1886 ev_printerr ("\n");
1887#else
547 perror (msg); 1888 perror (msg);
1889#endif
548 abort (); 1890 abort ();
549 } 1891 }
550} 1892}
551 1893
552static void * 1894static void *
553ev_realloc_emul (void *ptr, long size) 1895ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
554{ 1896{
555 /* some systems, notably openbsd and darwin, fail to properly 1897 /* some systems, notably openbsd and darwin, fail to properly
556 * implement realloc (x, 0) (as required by both ansi c-98 and 1898 * implement realloc (x, 0) (as required by both ansi c-89 and
557 * the single unix specification, so work around them here. 1899 * the single unix specification, so work around them here.
1900 * recently, also (at least) fedora and debian started breaking it,
1901 * despite documenting it otherwise.
558 */ 1902 */
559 1903
560 if (size) 1904 if (size)
561 return realloc (ptr, size); 1905 return realloc (ptr, size);
562 1906
563 free (ptr); 1907 free (ptr);
564 return 0; 1908 return 0;
565} 1909}
566 1910
567static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1911static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
568 1912
1913ecb_cold
569void 1914void
570ev_set_allocator (void *(*cb)(void *ptr, long size)) 1915ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
571{ 1916{
572 alloc = cb; 1917 alloc = cb;
573} 1918}
574 1919
575inline_speed void * 1920inline_speed void *
… …
577{ 1922{
578 ptr = alloc (ptr, size); 1923 ptr = alloc (ptr, size);
579 1924
580 if (!ptr && size) 1925 if (!ptr && size)
581 { 1926 {
1927#if EV_AVOID_STDIO
1928 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1929#else
582 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1930 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1931#endif
583 abort (); 1932 abort ();
584 } 1933 }
585 1934
586 return ptr; 1935 return ptr;
587} 1936}
… …
598typedef struct 1947typedef struct
599{ 1948{
600 WL head; 1949 WL head;
601 unsigned char events; /* the events watched for */ 1950 unsigned char events; /* the events watched for */
602 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */ 1951 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
603 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1952 unsigned char emask; /* some backends store the actual kernel mask in here */
604 unsigned char unused; 1953 unsigned char eflags; /* flags field for use by backends */
605#if EV_USE_EPOLL 1954#if EV_USE_EPOLL
606 unsigned int egen; /* generation counter to counter epoll bugs */ 1955 unsigned int egen; /* generation counter to counter epoll bugs */
607#endif 1956#endif
608#if EV_SELECT_IS_WINSOCKET 1957#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
609 SOCKET handle; 1958 SOCKET handle;
1959#endif
1960#if EV_USE_IOCP
1961 OVERLAPPED or, ow;
610#endif 1962#endif
611} ANFD; 1963} ANFD;
612 1964
613/* stores the pending event set for a given watcher */ 1965/* stores the pending event set for a given watcher */
614typedef struct 1966typedef struct
… …
656 #undef VAR 2008 #undef VAR
657 }; 2009 };
658 #include "ev_wrap.h" 2010 #include "ev_wrap.h"
659 2011
660 static struct ev_loop default_loop_struct; 2012 static struct ev_loop default_loop_struct;
661 struct ev_loop *ev_default_loop_ptr; 2013 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
662 2014
663#else 2015#else
664 2016
665 ev_tstamp ev_rt_now; 2017 EV_API_DECL ev_tstamp ev_rt_now = EV_TS_CONST (0.); /* needs to be initialised to make it a definition despite extern */
666 #define VAR(name,decl) static decl; 2018 #define VAR(name,decl) static decl;
667 #include "ev_vars.h" 2019 #include "ev_vars.h"
668 #undef VAR 2020 #undef VAR
669 2021
670 static int ev_default_loop_ptr; 2022 static int ev_default_loop_ptr;
671 2023
672#endif 2024#endif
673 2025
674#if EV_MINIMAL < 2 2026#if EV_FEATURE_API
675# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 2027# define EV_RELEASE_CB if (ecb_expect_false (release_cb)) release_cb (EV_A)
676# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 2028# define EV_ACQUIRE_CB if (ecb_expect_false (acquire_cb)) acquire_cb (EV_A)
677# define EV_INVOKE_PENDING invoke_cb (EV_A) 2029# define EV_INVOKE_PENDING invoke_cb (EV_A)
678#else 2030#else
679# define EV_RELEASE_CB (void)0 2031# define EV_RELEASE_CB (void)0
680# define EV_ACQUIRE_CB (void)0 2032# define EV_ACQUIRE_CB (void)0
681# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 2033# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
682#endif 2034#endif
683 2035
684#define EVUNLOOP_RECURSE 0x80 2036#define EVBREAK_RECURSE 0x80
685 2037
686/*****************************************************************************/ 2038/*****************************************************************************/
687 2039
688#ifndef EV_HAVE_EV_TIME 2040#ifndef EV_HAVE_EV_TIME
689ev_tstamp 2041ev_tstamp
690ev_time (void) 2042ev_time (void) EV_NOEXCEPT
691{ 2043{
692#if EV_USE_REALTIME 2044#if EV_USE_REALTIME
693 if (expect_true (have_realtime)) 2045 if (ecb_expect_true (have_realtime))
694 { 2046 {
695 struct timespec ts; 2047 struct timespec ts;
696 clock_gettime (CLOCK_REALTIME, &ts); 2048 clock_gettime (CLOCK_REALTIME, &ts);
697 return ts.tv_sec + ts.tv_nsec * 1e-9; 2049 return EV_TS_GET (ts);
698 } 2050 }
699#endif 2051#endif
700 2052
2053 {
701 struct timeval tv; 2054 struct timeval tv;
702 gettimeofday (&tv, 0); 2055 gettimeofday (&tv, 0);
703 return tv.tv_sec + tv.tv_usec * 1e-6; 2056 return EV_TV_GET (tv);
2057 }
704} 2058}
705#endif 2059#endif
706 2060
707inline_size ev_tstamp 2061inline_size ev_tstamp
708get_clock (void) 2062get_clock (void)
709{ 2063{
710#if EV_USE_MONOTONIC 2064#if EV_USE_MONOTONIC
711 if (expect_true (have_monotonic)) 2065 if (ecb_expect_true (have_monotonic))
712 { 2066 {
713 struct timespec ts; 2067 struct timespec ts;
714 clock_gettime (CLOCK_MONOTONIC, &ts); 2068 clock_gettime (CLOCK_MONOTONIC, &ts);
715 return ts.tv_sec + ts.tv_nsec * 1e-9; 2069 return EV_TS_GET (ts);
716 } 2070 }
717#endif 2071#endif
718 2072
719 return ev_time (); 2073 return ev_time ();
720} 2074}
721 2075
722#if EV_MULTIPLICITY 2076#if EV_MULTIPLICITY
723ev_tstamp 2077ev_tstamp
724ev_now (EV_P) 2078ev_now (EV_P) EV_NOEXCEPT
725{ 2079{
726 return ev_rt_now; 2080 return ev_rt_now;
727} 2081}
728#endif 2082#endif
729 2083
730void 2084void
731ev_sleep (ev_tstamp delay) 2085ev_sleep (ev_tstamp delay) EV_NOEXCEPT
732{ 2086{
733 if (delay > 0.) 2087 if (delay > EV_TS_CONST (0.))
734 { 2088 {
735#if EV_USE_NANOSLEEP 2089#if EV_USE_NANOSLEEP
736 struct timespec ts; 2090 struct timespec ts;
737 2091
738 ts.tv_sec = (time_t)delay; 2092 EV_TS_SET (ts, delay);
739 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
740
741 nanosleep (&ts, 0); 2093 nanosleep (&ts, 0);
742#elif defined(_WIN32) 2094#elif defined _WIN32
2095 /* maybe this should round up, as ms is very low resolution */
2096 /* compared to select (µs) or nanosleep (ns) */
743 Sleep ((unsigned long)(delay * 1e3)); 2097 Sleep ((unsigned long)(EV_TS_TO_MSEC (delay)));
744#else 2098#else
745 struct timeval tv; 2099 struct timeval tv;
746
747 tv.tv_sec = (time_t)delay;
748 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
749 2100
750 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 2101 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
751 /* something not guaranteed by newer posix versions, but guaranteed */ 2102 /* something not guaranteed by newer posix versions, but guaranteed */
752 /* by older ones */ 2103 /* by older ones */
2104 EV_TV_SET (tv, delay);
753 select (0, 0, 0, 0, &tv); 2105 select (0, 0, 0, 0, &tv);
754#endif 2106#endif
755 } 2107 }
756} 2108}
757 2109
758/*****************************************************************************/ 2110/*****************************************************************************/
759 2111
760#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 2112#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
761 2113
762/* find a suitable new size for the given array, */ 2114/* find a suitable new size for the given array, */
763/* hopefully by rounding to a ncie-to-malloc size */ 2115/* hopefully by rounding to a nice-to-malloc size */
764inline_size int 2116inline_size int
765array_nextsize (int elem, int cur, int cnt) 2117array_nextsize (int elem, int cur, int cnt)
766{ 2118{
767 int ncur = cur + 1; 2119 int ncur = cur + 1;
768 2120
769 do 2121 do
770 ncur <<= 1; 2122 ncur <<= 1;
771 while (cnt > ncur); 2123 while (cnt > ncur);
772 2124
773 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 2125 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
774 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 2126 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
775 { 2127 {
776 ncur *= elem; 2128 ncur *= elem;
777 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 2129 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
778 ncur = ncur - sizeof (void *) * 4; 2130 ncur = ncur - sizeof (void *) * 4;
… …
780 } 2132 }
781 2133
782 return ncur; 2134 return ncur;
783} 2135}
784 2136
785static noinline void * 2137ecb_noinline ecb_cold
2138static void *
786array_realloc (int elem, void *base, int *cur, int cnt) 2139array_realloc (int elem, void *base, int *cur, int cnt)
787{ 2140{
788 *cur = array_nextsize (elem, *cur, cnt); 2141 *cur = array_nextsize (elem, *cur, cnt);
789 return ev_realloc (base, elem * *cur); 2142 return ev_realloc (base, elem * *cur);
790} 2143}
791 2144
2145#define array_needsize_noinit(base,offset,count)
2146
792#define array_init_zero(base,count) \ 2147#define array_needsize_zerofill(base,offset,count) \
793 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 2148 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
794 2149
795#define array_needsize(type,base,cur,cnt,init) \ 2150#define array_needsize(type,base,cur,cnt,init) \
796 if (expect_false ((cnt) > (cur))) \ 2151 if (ecb_expect_false ((cnt) > (cur))) \
797 { \ 2152 { \
798 int ocur_ = (cur); \ 2153 ecb_unused int ocur_ = (cur); \
799 (base) = (type *)array_realloc \ 2154 (base) = (type *)array_realloc \
800 (sizeof (type), (base), &(cur), (cnt)); \ 2155 (sizeof (type), (base), &(cur), (cnt)); \
801 init ((base) + (ocur_), (cur) - ocur_); \ 2156 init ((base), ocur_, ((cur) - ocur_)); \
802 } 2157 }
803 2158
804#if 0 2159#if 0
805#define array_slim(type,stem) \ 2160#define array_slim(type,stem) \
806 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2161 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
… …
815 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 2170 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
816 2171
817/*****************************************************************************/ 2172/*****************************************************************************/
818 2173
819/* dummy callback for pending events */ 2174/* dummy callback for pending events */
820static void noinline 2175ecb_noinline
2176static void
821pendingcb (EV_P_ ev_prepare *w, int revents) 2177pendingcb (EV_P_ ev_prepare *w, int revents)
822{ 2178{
823} 2179}
824 2180
825void noinline 2181ecb_noinline
2182void
826ev_feed_event (EV_P_ void *w, int revents) 2183ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
827{ 2184{
828 W w_ = (W)w; 2185 W w_ = (W)w;
829 int pri = ABSPRI (w_); 2186 int pri = ABSPRI (w_);
830 2187
831 if (expect_false (w_->pending)) 2188 if (ecb_expect_false (w_->pending))
832 pendings [pri][w_->pending - 1].events |= revents; 2189 pendings [pri][w_->pending - 1].events |= revents;
833 else 2190 else
834 { 2191 {
835 w_->pending = ++pendingcnt [pri]; 2192 w_->pending = ++pendingcnt [pri];
836 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2193 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
837 pendings [pri][w_->pending - 1].w = w_; 2194 pendings [pri][w_->pending - 1].w = w_;
838 pendings [pri][w_->pending - 1].events = revents; 2195 pendings [pri][w_->pending - 1].events = revents;
839 } 2196 }
2197
2198 pendingpri = NUMPRI - 1;
840} 2199}
841 2200
842inline_speed void 2201inline_speed void
843feed_reverse (EV_P_ W w) 2202feed_reverse (EV_P_ W w)
844{ 2203{
845 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2204 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
846 rfeeds [rfeedcnt++] = w; 2205 rfeeds [rfeedcnt++] = w;
847} 2206}
848 2207
849inline_size void 2208inline_size void
850feed_reverse_done (EV_P_ int revents) 2209feed_reverse_done (EV_P_ int revents)
… …
864} 2223}
865 2224
866/*****************************************************************************/ 2225/*****************************************************************************/
867 2226
868inline_speed void 2227inline_speed void
869fd_event_nc (EV_P_ int fd, int revents) 2228fd_event_nocheck (EV_P_ int fd, int revents)
870{ 2229{
871 ANFD *anfd = anfds + fd; 2230 ANFD *anfd = anfds + fd;
872 ev_io *w; 2231 ev_io *w;
873 2232
874 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2233 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
885inline_speed void 2244inline_speed void
886fd_event (EV_P_ int fd, int revents) 2245fd_event (EV_P_ int fd, int revents)
887{ 2246{
888 ANFD *anfd = anfds + fd; 2247 ANFD *anfd = anfds + fd;
889 2248
890 if (expect_true (!anfd->reify)) 2249 if (ecb_expect_true (!anfd->reify))
891 fd_event_nc (EV_A_ fd, revents); 2250 fd_event_nocheck (EV_A_ fd, revents);
892} 2251}
893 2252
894void 2253void
895ev_feed_fd_event (EV_P_ int fd, int revents) 2254ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
896{ 2255{
897 if (fd >= 0 && fd < anfdmax) 2256 if (fd >= 0 && fd < anfdmax)
898 fd_event_nc (EV_A_ fd, revents); 2257 fd_event_nocheck (EV_A_ fd, revents);
899} 2258}
900 2259
901/* make sure the external fd watch events are in-sync */ 2260/* make sure the external fd watch events are in-sync */
902/* with the kernel/libev internal state */ 2261/* with the kernel/libev internal state */
903inline_size void 2262inline_size void
904fd_reify (EV_P) 2263fd_reify (EV_P)
905{ 2264{
906 int i; 2265 int i;
907 2266
2267 /* most backends do not modify the fdchanges list in backend_modfiy.
2268 * except io_uring, which has fixed-size buffers which might force us
2269 * to handle events in backend_modify, causing fdchangesd to be amended,
2270 * which could result in an endless loop.
2271 * to avoid this, we do not dynamically handle fds that were added
2272 * during fd_reify. that menas thast for those backends, fdchangecnt
2273 * might be non-zero during poll, which must cause them to not block.
2274 * to not put too much of a burden on other backends, this detail
2275 * needs to be handled in the backend.
2276 */
2277 int changecnt = fdchangecnt;
2278
2279#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
908 for (i = 0; i < fdchangecnt; ++i) 2280 for (i = 0; i < changecnt; ++i)
2281 {
2282 int fd = fdchanges [i];
2283 ANFD *anfd = anfds + fd;
2284
2285 if (anfd->reify & EV__IOFDSET && anfd->head)
2286 {
2287 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
2288
2289 if (handle != anfd->handle)
2290 {
2291 unsigned long arg;
2292
2293 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
2294
2295 /* handle changed, but fd didn't - we need to do it in two steps */
2296 backend_modify (EV_A_ fd, anfd->events, 0);
2297 anfd->events = 0;
2298 anfd->handle = handle;
2299 }
2300 }
2301 }
2302#endif
2303
2304 for (i = 0; i < changecnt; ++i)
909 { 2305 {
910 int fd = fdchanges [i]; 2306 int fd = fdchanges [i];
911 ANFD *anfd = anfds + fd; 2307 ANFD *anfd = anfds + fd;
912 ev_io *w; 2308 ev_io *w;
913 2309
914 unsigned char events = 0; 2310 unsigned char o_events = anfd->events;
2311 unsigned char o_reify = anfd->reify;
915 2312
916 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2313 anfd->reify = 0;
917 events |= (unsigned char)w->events;
918 2314
919#if EV_SELECT_IS_WINSOCKET 2315 /*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
920 if (events)
921 { 2316 {
922 unsigned long arg; 2317 anfd->events = 0;
923 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 2318
924 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 2319 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
2320 anfd->events |= (unsigned char)w->events;
2321
2322 if (o_events != anfd->events)
2323 o_reify = EV__IOFDSET; /* actually |= */
925 } 2324 }
926#endif
927 2325
928 { 2326 if (o_reify & EV__IOFDSET)
929 unsigned char o_events = anfd->events;
930 unsigned char o_reify = anfd->reify;
931
932 anfd->reify = 0;
933 anfd->events = events;
934
935 if (o_events != events || o_reify & EV__IOFDSET)
936 backend_modify (EV_A_ fd, o_events, events); 2327 backend_modify (EV_A_ fd, o_events, anfd->events);
937 } 2328 }
938 }
939 2329
2330 /* normally, fdchangecnt hasn't changed. if it has, then new fds have been added.
2331 * this is a rare case (see beginning comment in this function), so we copy them to the
2332 * front and hope the backend handles this case.
2333 */
2334 if (ecb_expect_false (fdchangecnt != changecnt))
2335 memmove (fdchanges, fdchanges + changecnt, (fdchangecnt - changecnt) * sizeof (*fdchanges));
2336
940 fdchangecnt = 0; 2337 fdchangecnt -= changecnt;
941} 2338}
942 2339
943/* something about the given fd changed */ 2340/* something about the given fd changed */
944inline_size void 2341inline_size
2342void
945fd_change (EV_P_ int fd, int flags) 2343fd_change (EV_P_ int fd, int flags)
946{ 2344{
947 unsigned char reify = anfds [fd].reify; 2345 unsigned char reify = anfds [fd].reify;
948 anfds [fd].reify |= flags; 2346 anfds [fd].reify |= flags;
949 2347
950 if (expect_true (!reify)) 2348 if (ecb_expect_true (!reify))
951 { 2349 {
952 ++fdchangecnt; 2350 ++fdchangecnt;
953 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2351 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
954 fdchanges [fdchangecnt - 1] = fd; 2352 fdchanges [fdchangecnt - 1] = fd;
955 } 2353 }
956} 2354}
957 2355
958/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2356/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
959inline_speed void 2357inline_speed ecb_cold void
960fd_kill (EV_P_ int fd) 2358fd_kill (EV_P_ int fd)
961{ 2359{
962 ev_io *w; 2360 ev_io *w;
963 2361
964 while ((w = (ev_io *)anfds [fd].head)) 2362 while ((w = (ev_io *)anfds [fd].head))
… …
966 ev_io_stop (EV_A_ w); 2364 ev_io_stop (EV_A_ w);
967 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2365 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
968 } 2366 }
969} 2367}
970 2368
971/* check whether the given fd is atcually valid, for error recovery */ 2369/* check whether the given fd is actually valid, for error recovery */
972inline_size int 2370inline_size ecb_cold int
973fd_valid (int fd) 2371fd_valid (int fd)
974{ 2372{
975#ifdef _WIN32 2373#ifdef _WIN32
976 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2374 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
977#else 2375#else
978 return fcntl (fd, F_GETFD) != -1; 2376 return fcntl (fd, F_GETFD) != -1;
979#endif 2377#endif
980} 2378}
981 2379
982/* called on EBADF to verify fds */ 2380/* called on EBADF to verify fds */
983static void noinline 2381ecb_noinline ecb_cold
2382static void
984fd_ebadf (EV_P) 2383fd_ebadf (EV_P)
985{ 2384{
986 int fd; 2385 int fd;
987 2386
988 for (fd = 0; fd < anfdmax; ++fd) 2387 for (fd = 0; fd < anfdmax; ++fd)
… …
990 if (!fd_valid (fd) && errno == EBADF) 2389 if (!fd_valid (fd) && errno == EBADF)
991 fd_kill (EV_A_ fd); 2390 fd_kill (EV_A_ fd);
992} 2391}
993 2392
994/* called on ENOMEM in select/poll to kill some fds and retry */ 2393/* called on ENOMEM in select/poll to kill some fds and retry */
995static void noinline 2394ecb_noinline ecb_cold
2395static void
996fd_enomem (EV_P) 2396fd_enomem (EV_P)
997{ 2397{
998 int fd; 2398 int fd;
999 2399
1000 for (fd = anfdmax; fd--; ) 2400 for (fd = anfdmax; fd--; )
… …
1004 break; 2404 break;
1005 } 2405 }
1006} 2406}
1007 2407
1008/* usually called after fork if backend needs to re-arm all fds from scratch */ 2408/* usually called after fork if backend needs to re-arm all fds from scratch */
1009static void noinline 2409ecb_noinline
2410static void
1010fd_rearm_all (EV_P) 2411fd_rearm_all (EV_P)
1011{ 2412{
1012 int fd; 2413 int fd;
1013 2414
1014 for (fd = 0; fd < anfdmax; ++fd) 2415 for (fd = 0; fd < anfdmax; ++fd)
… …
1018 anfds [fd].emask = 0; 2419 anfds [fd].emask = 0;
1019 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); 2420 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
1020 } 2421 }
1021} 2422}
1022 2423
2424/* used to prepare libev internal fd's */
2425/* this is not fork-safe */
2426inline_speed void
2427fd_intern (int fd)
2428{
2429#ifdef _WIN32
2430 unsigned long arg = 1;
2431 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
2432#else
2433 fcntl (fd, F_SETFD, FD_CLOEXEC);
2434 fcntl (fd, F_SETFL, O_NONBLOCK);
2435#endif
2436}
2437
1023/*****************************************************************************/ 2438/*****************************************************************************/
1024 2439
1025/* 2440/*
1026 * the heap functions want a real array index. array index 0 uis guaranteed to not 2441 * the heap functions want a real array index. array index 0 is guaranteed to not
1027 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 2442 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
1028 * the branching factor of the d-tree. 2443 * the branching factor of the d-tree.
1029 */ 2444 */
1030 2445
1031/* 2446/*
… …
1053 ev_tstamp minat; 2468 ev_tstamp minat;
1054 ANHE *minpos; 2469 ANHE *minpos;
1055 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; 2470 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
1056 2471
1057 /* find minimum child */ 2472 /* find minimum child */
1058 if (expect_true (pos + DHEAP - 1 < E)) 2473 if (ecb_expect_true (pos + DHEAP - 1 < E))
1059 { 2474 {
1060 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2475 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1061 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2476 if ( minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1062 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2477 if ( minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1063 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2478 if ( minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1064 } 2479 }
1065 else if (pos < E) 2480 else if (pos < E)
1066 { 2481 {
1067 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2482 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1068 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2483 if (pos + 1 < E && minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1069 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2484 if (pos + 2 < E && minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1070 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2485 if (pos + 3 < E && minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1071 } 2486 }
1072 else 2487 else
1073 break; 2488 break;
1074 2489
1075 if (ANHE_at (he) <= minat) 2490 if (ANHE_at (he) <= minat)
… …
1083 2498
1084 heap [k] = he; 2499 heap [k] = he;
1085 ev_active (ANHE_w (he)) = k; 2500 ev_active (ANHE_w (he)) = k;
1086} 2501}
1087 2502
1088#else /* 4HEAP */ 2503#else /* not 4HEAP */
1089 2504
1090#define HEAP0 1 2505#define HEAP0 1
1091#define HPARENT(k) ((k) >> 1) 2506#define HPARENT(k) ((k) >> 1)
1092#define UPHEAP_DONE(p,k) (!(p)) 2507#define UPHEAP_DONE(p,k) (!(p))
1093 2508
… …
1165 upheap (heap, i + HEAP0); 2580 upheap (heap, i + HEAP0);
1166} 2581}
1167 2582
1168/*****************************************************************************/ 2583/*****************************************************************************/
1169 2584
1170/* associate signal watchers to a signal signal */ 2585/* associate signal watchers to a signal */
1171typedef struct 2586typedef struct
1172{ 2587{
1173 EV_ATOMIC_T pending; 2588 EV_ATOMIC_T pending;
1174#if EV_MULTIPLICITY 2589#if EV_MULTIPLICITY
1175 EV_P; 2590 EV_P;
… …
1179 2594
1180static ANSIG signals [EV_NSIG - 1]; 2595static ANSIG signals [EV_NSIG - 1];
1181 2596
1182/*****************************************************************************/ 2597/*****************************************************************************/
1183 2598
1184/* used to prepare libev internal fd's */ 2599#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1185/* this is not fork-safe */ 2600
2601ecb_noinline ecb_cold
2602static void
2603evpipe_init (EV_P)
2604{
2605 if (!ev_is_active (&pipe_w))
2606 {
2607 int fds [2];
2608
2609# if EV_USE_EVENTFD
2610 fds [0] = -1;
2611 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
2612 if (fds [1] < 0 && errno == EINVAL)
2613 fds [1] = eventfd (0, 0);
2614
2615 if (fds [1] < 0)
2616# endif
2617 {
2618 while (pipe (fds))
2619 ev_syserr ("(libev) error creating signal/async pipe");
2620
2621 fd_intern (fds [0]);
2622 }
2623
2624 evpipe [0] = fds [0];
2625
2626 if (evpipe [1] < 0)
2627 evpipe [1] = fds [1]; /* first call, set write fd */
2628 else
2629 {
2630 /* on subsequent calls, do not change evpipe [1] */
2631 /* so that evpipe_write can always rely on its value. */
2632 /* this branch does not do anything sensible on windows, */
2633 /* so must not be executed on windows */
2634
2635 dup2 (fds [1], evpipe [1]);
2636 close (fds [1]);
2637 }
2638
2639 fd_intern (evpipe [1]);
2640
2641 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2642 ev_io_start (EV_A_ &pipe_w);
2643 ev_unref (EV_A); /* watcher should not keep loop alive */
2644 }
2645}
2646
1186inline_speed void 2647inline_speed void
1187fd_intern (int fd) 2648evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1188{ 2649{
1189#ifdef _WIN32 2650 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1190 unsigned long arg = 1;
1191 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1192#else
1193 fcntl (fd, F_SETFD, FD_CLOEXEC);
1194 fcntl (fd, F_SETFL, O_NONBLOCK);
1195#endif
1196}
1197 2651
1198static void noinline 2652 if (ecb_expect_true (*flag))
1199evpipe_init (EV_P) 2653 return;
1200{ 2654
1201 if (!ev_is_active (&pipe_w)) 2655 *flag = 1;
2656 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2657
2658 pipe_write_skipped = 1;
2659
2660 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2661
2662 if (pipe_write_wanted)
1202 { 2663 {
2664 int old_errno;
2665
2666 pipe_write_skipped = 0;
2667 ECB_MEMORY_FENCE_RELEASE;
2668
2669 old_errno = errno; /* save errno because write will clobber it */
2670
1203#if EV_USE_EVENTFD 2671#if EV_USE_EVENTFD
1204 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2672 if (evpipe [0] < 0)
1205 if (evfd < 0 && errno == EINVAL)
1206 evfd = eventfd (0, 0);
1207
1208 if (evfd >= 0)
1209 { 2673 {
1210 evpipe [0] = -1; 2674 uint64_t counter = 1;
1211 fd_intern (evfd); /* doing it twice doesn't hurt */ 2675 write (evpipe [1], &counter, sizeof (uint64_t));
1212 ev_io_set (&pipe_w, evfd, EV_READ);
1213 } 2676 }
1214 else 2677 else
1215#endif 2678#endif
1216 { 2679 {
1217 while (pipe (evpipe)) 2680#ifdef _WIN32
1218 ev_syserr ("(libev) error creating signal/async pipe"); 2681 WSABUF buf;
1219 2682 DWORD sent;
1220 fd_intern (evpipe [0]); 2683 buf.buf = (char *)&buf;
1221 fd_intern (evpipe [1]); 2684 buf.len = 1;
1222 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2685 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2686#else
2687 write (evpipe [1], &(evpipe [1]), 1);
2688#endif
1223 } 2689 }
1224
1225 ev_io_start (EV_A_ &pipe_w);
1226 ev_unref (EV_A); /* watcher should not keep loop alive */
1227 }
1228}
1229
1230inline_size void
1231evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1232{
1233 if (!*flag)
1234 {
1235 int old_errno = errno; /* save errno because write might clobber it */
1236
1237 *flag = 1;
1238
1239#if EV_USE_EVENTFD
1240 if (evfd >= 0)
1241 {
1242 uint64_t counter = 1;
1243 write (evfd, &counter, sizeof (uint64_t));
1244 }
1245 else
1246#endif
1247 write (evpipe [1], &old_errno, 1);
1248 2690
1249 errno = old_errno; 2691 errno = old_errno;
1250 } 2692 }
1251} 2693}
1252 2694
… …
1255static void 2697static void
1256pipecb (EV_P_ ev_io *iow, int revents) 2698pipecb (EV_P_ ev_io *iow, int revents)
1257{ 2699{
1258 int i; 2700 int i;
1259 2701
2702 if (revents & EV_READ)
2703 {
1260#if EV_USE_EVENTFD 2704#if EV_USE_EVENTFD
1261 if (evfd >= 0) 2705 if (evpipe [0] < 0)
1262 { 2706 {
1263 uint64_t counter; 2707 uint64_t counter;
1264 read (evfd, &counter, sizeof (uint64_t)); 2708 read (evpipe [1], &counter, sizeof (uint64_t));
1265 } 2709 }
1266 else 2710 else
1267#endif 2711#endif
1268 { 2712 {
1269 char dummy; 2713 char dummy[4];
2714#ifdef _WIN32
2715 WSABUF buf;
2716 DWORD recvd;
2717 DWORD flags = 0;
2718 buf.buf = dummy;
2719 buf.len = sizeof (dummy);
2720 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2721#else
1270 read (evpipe [0], &dummy, 1); 2722 read (evpipe [0], &dummy, sizeof (dummy));
2723#endif
2724 }
1271 } 2725 }
1272 2726
2727 pipe_write_skipped = 0;
2728
2729 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2730
2731#if EV_SIGNAL_ENABLE
1273 if (sig_pending) 2732 if (sig_pending)
1274 { 2733 {
1275 sig_pending = 0; 2734 sig_pending = 0;
1276 2735
2736 ECB_MEMORY_FENCE;
2737
1277 for (i = EV_NSIG - 1; i--; ) 2738 for (i = EV_NSIG - 1; i--; )
1278 if (expect_false (signals [i].pending)) 2739 if (ecb_expect_false (signals [i].pending))
1279 ev_feed_signal_event (EV_A_ i + 1); 2740 ev_feed_signal_event (EV_A_ i + 1);
1280 } 2741 }
2742#endif
1281 2743
1282#if EV_ASYNC_ENABLE 2744#if EV_ASYNC_ENABLE
1283 if (async_pending) 2745 if (async_pending)
1284 { 2746 {
1285 async_pending = 0; 2747 async_pending = 0;
2748
2749 ECB_MEMORY_FENCE;
1286 2750
1287 for (i = asynccnt; i--; ) 2751 for (i = asynccnt; i--; )
1288 if (asyncs [i]->sent) 2752 if (asyncs [i]->sent)
1289 { 2753 {
1290 asyncs [i]->sent = 0; 2754 asyncs [i]->sent = 0;
2755 ECB_MEMORY_FENCE_RELEASE;
1291 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2756 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1292 } 2757 }
1293 } 2758 }
1294#endif 2759#endif
1295} 2760}
1296 2761
1297/*****************************************************************************/ 2762/*****************************************************************************/
1298 2763
2764void
2765ev_feed_signal (int signum) EV_NOEXCEPT
2766{
2767#if EV_MULTIPLICITY
2768 EV_P;
2769 ECB_MEMORY_FENCE_ACQUIRE;
2770 EV_A = signals [signum - 1].loop;
2771
2772 if (!EV_A)
2773 return;
2774#endif
2775
2776 signals [signum - 1].pending = 1;
2777 evpipe_write (EV_A_ &sig_pending);
2778}
2779
1299static void 2780static void
1300ev_sighandler (int signum) 2781ev_sighandler (int signum)
1301{ 2782{
1302#if EV_MULTIPLICITY
1303 EV_P = signals [signum - 1].loop;
1304#endif
1305
1306#ifdef _WIN32 2783#ifdef _WIN32
1307 signal (signum, ev_sighandler); 2784 signal (signum, ev_sighandler);
1308#endif 2785#endif
1309 2786
1310 signals [signum - 1].pending = 1; 2787 ev_feed_signal (signum);
1311 evpipe_write (EV_A_ &sig_pending);
1312} 2788}
1313 2789
1314void noinline 2790ecb_noinline
2791void
1315ev_feed_signal_event (EV_P_ int signum) 2792ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
1316{ 2793{
1317 WL w; 2794 WL w;
1318 2795
1319 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2796 if (ecb_expect_false (signum <= 0 || signum >= EV_NSIG))
1320 return; 2797 return;
1321 2798
1322 --signum; 2799 --signum;
1323 2800
1324#if EV_MULTIPLICITY 2801#if EV_MULTIPLICITY
1325 /* it is permissible to try to feed a signal to the wrong loop */ 2802 /* it is permissible to try to feed a signal to the wrong loop */
1326 /* or, likely more useful, feeding a signal nobody is waiting for */ 2803 /* or, likely more useful, feeding a signal nobody is waiting for */
1327 2804
1328 if (expect_false (signals [signum].loop != EV_A)) 2805 if (ecb_expect_false (signals [signum].loop != EV_A))
1329 return; 2806 return;
1330#endif 2807#endif
1331 2808
1332 signals [signum].pending = 0; 2809 signals [signum].pending = 0;
2810 ECB_MEMORY_FENCE_RELEASE;
1333 2811
1334 for (w = signals [signum].head; w; w = w->next) 2812 for (w = signals [signum].head; w; w = w->next)
1335 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2813 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1336} 2814}
1337 2815
… …
1353 break; 2831 break;
1354 } 2832 }
1355} 2833}
1356#endif 2834#endif
1357 2835
2836#endif
2837
1358/*****************************************************************************/ 2838/*****************************************************************************/
1359 2839
2840#if EV_CHILD_ENABLE
1360static WL childs [EV_PID_HASHSIZE]; 2841static WL childs [EV_PID_HASHSIZE];
1361
1362#ifndef _WIN32
1363 2842
1364static ev_signal childev; 2843static ev_signal childev;
1365 2844
1366#ifndef WIFCONTINUED 2845#ifndef WIFCONTINUED
1367# define WIFCONTINUED(status) 0 2846# define WIFCONTINUED(status) 0
… …
1372child_reap (EV_P_ int chain, int pid, int status) 2851child_reap (EV_P_ int chain, int pid, int status)
1373{ 2852{
1374 ev_child *w; 2853 ev_child *w;
1375 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2854 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1376 2855
1377 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2856 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1378 { 2857 {
1379 if ((w->pid == pid || !w->pid) 2858 if ((w->pid == pid || !w->pid)
1380 && (!traced || (w->flags & 1))) 2859 && (!traced || (w->flags & 1)))
1381 { 2860 {
1382 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2861 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1407 /* make sure we are called again until all children have been reaped */ 2886 /* make sure we are called again until all children have been reaped */
1408 /* we need to do it this way so that the callback gets called before we continue */ 2887 /* we need to do it this way so that the callback gets called before we continue */
1409 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2888 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1410 2889
1411 child_reap (EV_A_ pid, pid, status); 2890 child_reap (EV_A_ pid, pid, status);
1412 if (EV_PID_HASHSIZE > 1) 2891 if ((EV_PID_HASHSIZE) > 1)
1413 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2892 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1414} 2893}
1415 2894
1416#endif 2895#endif
1417 2896
1418/*****************************************************************************/ 2897/*****************************************************************************/
1419 2898
2899#if EV_USE_TIMERFD
2900
2901static void periodics_reschedule (EV_P);
2902
2903static void
2904timerfdcb (EV_P_ ev_io *iow, int revents)
2905{
2906 struct itimerspec its = { 0 };
2907
2908 /* since we can't easily come zup with a (portable) maximum value of time_t,
2909 * we wake up once per month, which hopefully is rare enough to not
2910 * be a problem. */
2911 its.it_value.tv_sec = ev_rt_now + 86400 * 30;
2912 timerfd_settime (timerfd, TFD_TIMER_ABSTIME | TFD_TIMER_CANCEL_ON_SET, &its, 0);
2913
2914 ev_rt_now = ev_time ();
2915 /* periodics_reschedule only needs ev_rt_now */
2916 /* but maybe in the future we want the full treatment. */
2917 /*
2918 now_floor = EV_TS_CONST (0.);
2919 time_update (EV_A_ EV_TSTAMP_HUGE);
2920 */
2921 periodics_reschedule (EV_A);
2922}
2923
2924ecb_noinline ecb_cold
2925static void
2926evtimerfd_init (EV_P)
2927{
2928 if (!ev_is_active (&timerfd_w))
2929 {
2930 timerfd = timerfd_create (CLOCK_REALTIME, TFD_NONBLOCK | TFD_CLOEXEC);
2931
2932 if (timerfd >= 0)
2933 {
2934 fd_intern (timerfd); /* just to be sure */
2935
2936 ev_io_init (&timerfd_w, timerfdcb, timerfd, EV_READ);
2937 ev_set_priority (&timerfd_w, EV_MINPRI);
2938 ev_io_start (EV_A_ &timerfd_w);
2939 ev_unref (EV_A); /* watcher should not keep loop alive */
2940
2941 /* (re-) arm timer */
2942 timerfdcb (EV_A_ 0, 0);
2943 }
2944 }
2945}
2946
2947#endif
2948
2949/*****************************************************************************/
2950
2951#if EV_USE_IOCP
2952# include "ev_iocp.c"
2953#endif
1420#if EV_USE_PORT 2954#if EV_USE_PORT
1421# include "ev_port.c" 2955# include "ev_port.c"
1422#endif 2956#endif
1423#if EV_USE_KQUEUE 2957#if EV_USE_KQUEUE
1424# include "ev_kqueue.c" 2958# include "ev_kqueue.c"
1425#endif 2959#endif
1426#if EV_USE_EPOLL 2960#if EV_USE_EPOLL
1427# include "ev_epoll.c" 2961# include "ev_epoll.c"
1428#endif 2962#endif
2963#if EV_USE_LINUXAIO
2964# include "ev_linuxaio.c"
2965#endif
2966#if EV_USE_IOURING
2967# include "ev_iouring.c"
2968#endif
1429#if EV_USE_POLL 2969#if EV_USE_POLL
1430# include "ev_poll.c" 2970# include "ev_poll.c"
1431#endif 2971#endif
1432#if EV_USE_SELECT 2972#if EV_USE_SELECT
1433# include "ev_select.c" 2973# include "ev_select.c"
1434#endif 2974#endif
1435 2975
1436int 2976ecb_cold int
1437ev_version_major (void) 2977ev_version_major (void) EV_NOEXCEPT
1438{ 2978{
1439 return EV_VERSION_MAJOR; 2979 return EV_VERSION_MAJOR;
1440} 2980}
1441 2981
1442int 2982ecb_cold int
1443ev_version_minor (void) 2983ev_version_minor (void) EV_NOEXCEPT
1444{ 2984{
1445 return EV_VERSION_MINOR; 2985 return EV_VERSION_MINOR;
1446} 2986}
1447 2987
1448/* return true if we are running with elevated privileges and should ignore env variables */ 2988/* return true if we are running with elevated privileges and should ignore env variables */
1449int inline_size 2989inline_size ecb_cold int
1450enable_secure (void) 2990enable_secure (void)
1451{ 2991{
1452#ifdef _WIN32 2992#ifdef _WIN32
1453 return 0; 2993 return 0;
1454#else 2994#else
1455 return getuid () != geteuid () 2995 return getuid () != geteuid ()
1456 || getgid () != getegid (); 2996 || getgid () != getegid ();
1457#endif 2997#endif
1458} 2998}
1459 2999
3000ecb_cold
1460unsigned int 3001unsigned int
1461ev_supported_backends (void) 3002ev_supported_backends (void) EV_NOEXCEPT
1462{ 3003{
1463 unsigned int flags = 0; 3004 unsigned int flags = 0;
1464 3005
1465 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 3006 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1466 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 3007 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
1467 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 3008 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
1468 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 3009 if (EV_USE_LINUXAIO ) flags |= EVBACKEND_LINUXAIO;
1469 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 3010 if (EV_USE_IOURING && ev_linux_version () >= 0x050601) flags |= EVBACKEND_IOURING; /* 5.6.1+ */
1470 3011 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
3012 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
3013
1471 return flags; 3014 return flags;
1472} 3015}
1473 3016
3017ecb_cold
1474unsigned int 3018unsigned int
1475ev_recommended_backends (void) 3019ev_recommended_backends (void) EV_NOEXCEPT
1476{ 3020{
1477 unsigned int flags = ev_supported_backends (); 3021 unsigned int flags = ev_supported_backends ();
1478 3022
1479#ifndef __NetBSD__ 3023#ifndef __NetBSD__
1480 /* kqueue is borked on everything but netbsd apparently */ 3024 /* kqueue is borked on everything but netbsd apparently */
… …
1484#ifdef __APPLE__ 3028#ifdef __APPLE__
1485 /* only select works correctly on that "unix-certified" platform */ 3029 /* only select works correctly on that "unix-certified" platform */
1486 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 3030 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1487 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 3031 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1488#endif 3032#endif
3033#ifdef __FreeBSD__
3034 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
3035#endif
3036
3037 /* TODO: linuxaio is very experimental */
3038#if !EV_RECOMMEND_LINUXAIO
3039 flags &= ~EVBACKEND_LINUXAIO;
3040#endif
3041 /* TODO: linuxaio is super experimental */
3042#if !EV_RECOMMEND_IOURING
3043 flags &= ~EVBACKEND_IOURING;
3044#endif
1489 3045
1490 return flags; 3046 return flags;
1491} 3047}
1492 3048
3049ecb_cold
1493unsigned int 3050unsigned int
1494ev_embeddable_backends (void) 3051ev_embeddable_backends (void) EV_NOEXCEPT
1495{ 3052{
1496 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 3053 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT | EVBACKEND_IOURING;
1497 3054
1498 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 3055 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1499 /* please fix it and tell me how to detect the fix */ 3056 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1500 flags &= ~EVBACKEND_EPOLL; 3057 flags &= ~EVBACKEND_EPOLL;
3058
3059 /* EVBACKEND_LINUXAIO is theoretically embeddable, but suffers from a performance overhead */
1501 3060
1502 return flags; 3061 return flags;
1503} 3062}
1504 3063
1505unsigned int 3064unsigned int
1506ev_backend (EV_P) 3065ev_backend (EV_P) EV_NOEXCEPT
1507{ 3066{
1508 return backend; 3067 return backend;
1509} 3068}
1510 3069
1511#if EV_MINIMAL < 2 3070#if EV_FEATURE_API
1512unsigned int 3071unsigned int
1513ev_loop_count (EV_P) 3072ev_iteration (EV_P) EV_NOEXCEPT
1514{ 3073{
1515 return loop_count; 3074 return loop_count;
1516} 3075}
1517 3076
1518unsigned int 3077unsigned int
1519ev_loop_depth (EV_P) 3078ev_depth (EV_P) EV_NOEXCEPT
1520{ 3079{
1521 return loop_depth; 3080 return loop_depth;
1522} 3081}
1523 3082
1524void 3083void
1525ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 3084ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1526{ 3085{
1527 io_blocktime = interval; 3086 io_blocktime = interval;
1528} 3087}
1529 3088
1530void 3089void
1531ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 3090ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1532{ 3091{
1533 timeout_blocktime = interval; 3092 timeout_blocktime = interval;
1534} 3093}
1535 3094
1536void 3095void
1537ev_set_userdata (EV_P_ void *data) 3096ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
1538{ 3097{
1539 userdata = data; 3098 userdata = data;
1540} 3099}
1541 3100
1542void * 3101void *
1543ev_userdata (EV_P) 3102ev_userdata (EV_P) EV_NOEXCEPT
1544{ 3103{
1545 return userdata; 3104 return userdata;
1546} 3105}
1547 3106
3107void
1548void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 3108ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
1549{ 3109{
1550 invoke_cb = invoke_pending_cb; 3110 invoke_cb = invoke_pending_cb;
1551} 3111}
1552 3112
3113void
1553void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 3114ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
1554{ 3115{
1555 release_cb = release; 3116 release_cb = release;
1556 acquire_cb = acquire; 3117 acquire_cb = acquire;
1557} 3118}
1558#endif 3119#endif
1559 3120
1560/* initialise a loop structure, must be zero-initialised */ 3121/* initialise a loop structure, must be zero-initialised */
1561static void noinline 3122ecb_noinline ecb_cold
3123static void
1562loop_init (EV_P_ unsigned int flags) 3124loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
1563{ 3125{
1564 if (!backend) 3126 if (!backend)
1565 { 3127 {
3128 origflags = flags;
3129
1566#if EV_USE_REALTIME 3130#if EV_USE_REALTIME
1567 if (!have_realtime) 3131 if (!have_realtime)
1568 { 3132 {
1569 struct timespec ts; 3133 struct timespec ts;
1570 3134
… …
1592 if (!(flags & EVFLAG_NOENV) 3156 if (!(flags & EVFLAG_NOENV)
1593 && !enable_secure () 3157 && !enable_secure ()
1594 && getenv ("LIBEV_FLAGS")) 3158 && getenv ("LIBEV_FLAGS"))
1595 flags = atoi (getenv ("LIBEV_FLAGS")); 3159 flags = atoi (getenv ("LIBEV_FLAGS"));
1596 3160
1597 ev_rt_now = ev_time (); 3161 ev_rt_now = ev_time ();
1598 mn_now = get_clock (); 3162 mn_now = get_clock ();
1599 now_floor = mn_now; 3163 now_floor = mn_now;
1600 rtmn_diff = ev_rt_now - mn_now; 3164 rtmn_diff = ev_rt_now - mn_now;
1601#if EV_MINIMAL < 2 3165#if EV_FEATURE_API
1602 invoke_cb = ev_invoke_pending; 3166 invoke_cb = ev_invoke_pending;
1603#endif 3167#endif
1604 3168
1605 io_blocktime = 0.; 3169 io_blocktime = 0.;
1606 timeout_blocktime = 0.; 3170 timeout_blocktime = 0.;
1607 backend = 0; 3171 backend = 0;
1608 backend_fd = -1; 3172 backend_fd = -1;
1609 sig_pending = 0; 3173 sig_pending = 0;
1610#if EV_ASYNC_ENABLE 3174#if EV_ASYNC_ENABLE
1611 async_pending = 0; 3175 async_pending = 0;
1612#endif 3176#endif
3177 pipe_write_skipped = 0;
3178 pipe_write_wanted = 0;
3179 evpipe [0] = -1;
3180 evpipe [1] = -1;
1613#if EV_USE_INOTIFY 3181#if EV_USE_INOTIFY
1614 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 3182 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1615#endif 3183#endif
1616#if EV_USE_SIGNALFD 3184#if EV_USE_SIGNALFD
1617 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 3185 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1618#endif 3186#endif
3187#if EV_USE_TIMERFD
3188 timerfd = flags & EVFLAG_NOTIMERFD ? -1 : -2;
3189#endif
1619 3190
1620 if (!(flags & 0x0000ffffU)) 3191 if (!(flags & EVBACKEND_MASK))
1621 flags |= ev_recommended_backends (); 3192 flags |= ev_recommended_backends ();
1622 3193
3194#if EV_USE_IOCP
3195 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
3196#endif
1623#if EV_USE_PORT 3197#if EV_USE_PORT
1624 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 3198 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1625#endif 3199#endif
1626#if EV_USE_KQUEUE 3200#if EV_USE_KQUEUE
1627 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 3201 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
3202#endif
3203#if EV_USE_IOURING
3204 if (!backend && (flags & EVBACKEND_IOURING )) backend = iouring_init (EV_A_ flags);
3205#endif
3206#if EV_USE_LINUXAIO
3207 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
1628#endif 3208#endif
1629#if EV_USE_EPOLL 3209#if EV_USE_EPOLL
1630 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 3210 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
1631#endif 3211#endif
1632#if EV_USE_POLL 3212#if EV_USE_POLL
1633 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 3213 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
1634#endif 3214#endif
1635#if EV_USE_SELECT 3215#if EV_USE_SELECT
1636 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 3216 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
1637#endif 3217#endif
1638 3218
1639 ev_prepare_init (&pending_w, pendingcb); 3219 ev_prepare_init (&pending_w, pendingcb);
1640 3220
3221#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1641 ev_init (&pipe_w, pipecb); 3222 ev_init (&pipe_w, pipecb);
1642 ev_set_priority (&pipe_w, EV_MAXPRI); 3223 ev_set_priority (&pipe_w, EV_MAXPRI);
3224#endif
1643 } 3225 }
1644} 3226}
1645 3227
1646/* free up a loop structure */ 3228/* free up a loop structure */
1647static void noinline 3229ecb_cold
3230void
1648loop_destroy (EV_P) 3231ev_loop_destroy (EV_P)
1649{ 3232{
1650 int i; 3233 int i;
3234
3235#if EV_MULTIPLICITY
3236 /* mimic free (0) */
3237 if (!EV_A)
3238 return;
3239#endif
3240
3241#if EV_CLEANUP_ENABLE
3242 /* queue cleanup watchers (and execute them) */
3243 if (ecb_expect_false (cleanupcnt))
3244 {
3245 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
3246 EV_INVOKE_PENDING;
3247 }
3248#endif
3249
3250#if EV_CHILD_ENABLE
3251 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
3252 {
3253 ev_ref (EV_A); /* child watcher */
3254 ev_signal_stop (EV_A_ &childev);
3255 }
3256#endif
1651 3257
1652 if (ev_is_active (&pipe_w)) 3258 if (ev_is_active (&pipe_w))
1653 { 3259 {
1654 /*ev_ref (EV_A);*/ 3260 /*ev_ref (EV_A);*/
1655 /*ev_io_stop (EV_A_ &pipe_w);*/ 3261 /*ev_io_stop (EV_A_ &pipe_w);*/
1656 3262
1657#if EV_USE_EVENTFD
1658 if (evfd >= 0)
1659 close (evfd);
1660#endif
1661
1662 if (evpipe [0] >= 0)
1663 {
1664 EV_WIN32_CLOSE_FD (evpipe [0]); 3263 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1665 EV_WIN32_CLOSE_FD (evpipe [1]); 3264 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1666 }
1667 } 3265 }
1668 3266
1669#if EV_USE_SIGNALFD 3267#if EV_USE_SIGNALFD
1670 if (ev_is_active (&sigfd_w)) 3268 if (ev_is_active (&sigfd_w))
1671 close (sigfd); 3269 close (sigfd);
1672#endif 3270#endif
1673 3271
3272#if EV_USE_TIMERFD
3273 if (ev_is_active (&timerfd_w))
3274 close (timerfd);
3275#endif
3276
1674#if EV_USE_INOTIFY 3277#if EV_USE_INOTIFY
1675 if (fs_fd >= 0) 3278 if (fs_fd >= 0)
1676 close (fs_fd); 3279 close (fs_fd);
1677#endif 3280#endif
1678 3281
1679 if (backend_fd >= 0) 3282 if (backend_fd >= 0)
1680 close (backend_fd); 3283 close (backend_fd);
1681 3284
3285#if EV_USE_IOCP
3286 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
3287#endif
1682#if EV_USE_PORT 3288#if EV_USE_PORT
1683 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3289 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1684#endif 3290#endif
1685#if EV_USE_KQUEUE 3291#if EV_USE_KQUEUE
1686 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3292 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
3293#endif
3294#if EV_USE_IOURING
3295 if (backend == EVBACKEND_IOURING ) iouring_destroy (EV_A);
3296#endif
3297#if EV_USE_LINUXAIO
3298 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
1687#endif 3299#endif
1688#if EV_USE_EPOLL 3300#if EV_USE_EPOLL
1689 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3301 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
1690#endif 3302#endif
1691#if EV_USE_POLL 3303#if EV_USE_POLL
1692 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3304 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
1693#endif 3305#endif
1694#if EV_USE_SELECT 3306#if EV_USE_SELECT
1695 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3307 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
1696#endif 3308#endif
1697 3309
1698 for (i = NUMPRI; i--; ) 3310 for (i = NUMPRI; i--; )
1699 { 3311 {
1700 array_free (pending, [i]); 3312 array_free (pending, [i]);
… …
1713 array_free (periodic, EMPTY); 3325 array_free (periodic, EMPTY);
1714#endif 3326#endif
1715#if EV_FORK_ENABLE 3327#if EV_FORK_ENABLE
1716 array_free (fork, EMPTY); 3328 array_free (fork, EMPTY);
1717#endif 3329#endif
3330#if EV_CLEANUP_ENABLE
3331 array_free (cleanup, EMPTY);
3332#endif
1718 array_free (prepare, EMPTY); 3333 array_free (prepare, EMPTY);
1719 array_free (check, EMPTY); 3334 array_free (check, EMPTY);
1720#if EV_ASYNC_ENABLE 3335#if EV_ASYNC_ENABLE
1721 array_free (async, EMPTY); 3336 array_free (async, EMPTY);
1722#endif 3337#endif
1723 3338
1724 backend = 0; 3339 backend = 0;
3340
3341#if EV_MULTIPLICITY
3342 if (ev_is_default_loop (EV_A))
3343#endif
3344 ev_default_loop_ptr = 0;
3345#if EV_MULTIPLICITY
3346 else
3347 ev_free (EV_A);
3348#endif
1725} 3349}
1726 3350
1727#if EV_USE_INOTIFY 3351#if EV_USE_INOTIFY
1728inline_size void infy_fork (EV_P); 3352inline_size void infy_fork (EV_P);
1729#endif 3353#endif
1730 3354
1731inline_size void 3355inline_size void
1732loop_fork (EV_P) 3356loop_fork (EV_P)
1733{ 3357{
1734#if EV_USE_PORT 3358#if EV_USE_PORT
1735 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3359 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1736#endif 3360#endif
1737#if EV_USE_KQUEUE 3361#if EV_USE_KQUEUE
1738 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 3362 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
3363#endif
3364#if EV_USE_IOURING
3365 if (backend == EVBACKEND_IOURING ) iouring_fork (EV_A);
3366#endif
3367#if EV_USE_LINUXAIO
3368 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
1739#endif 3369#endif
1740#if EV_USE_EPOLL 3370#if EV_USE_EPOLL
1741 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3371 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
1742#endif 3372#endif
1743#if EV_USE_INOTIFY 3373#if EV_USE_INOTIFY
1744 infy_fork (EV_A); 3374 infy_fork (EV_A);
1745#endif 3375#endif
1746 3376
3377 if (postfork != 2)
3378 {
3379 #if EV_USE_SIGNALFD
3380 /* surprisingly, nothing needs to be done for signalfd, accoridng to docs, it does the right thing on fork */
3381 #endif
3382
3383 #if EV_USE_TIMERFD
3384 if (ev_is_active (&timerfd_w))
3385 {
3386 ev_ref (EV_A);
3387 ev_io_stop (EV_A_ &timerfd_w);
3388
3389 close (timerfd);
3390 timerfd = -2;
3391
3392 evtimerfd_init (EV_A);
3393 /* reschedule periodics, in case we missed something */
3394 ev_feed_event (EV_A_ &timerfd_w, EV_CUSTOM);
3395 }
3396 #endif
3397
3398 #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1747 if (ev_is_active (&pipe_w)) 3399 if (ev_is_active (&pipe_w))
1748 { 3400 {
1749 /* this "locks" the handlers against writing to the pipe */ 3401 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1750 /* while we modify the fd vars */ 3402
1751 sig_pending = 1;
1752#if EV_ASYNC_ENABLE
1753 async_pending = 1;
1754#endif
1755
1756 ev_ref (EV_A); 3403 ev_ref (EV_A);
1757 ev_io_stop (EV_A_ &pipe_w); 3404 ev_io_stop (EV_A_ &pipe_w);
1758 3405
1759#if EV_USE_EVENTFD
1760 if (evfd >= 0)
1761 close (evfd);
1762#endif
1763
1764 if (evpipe [0] >= 0) 3406 if (evpipe [0] >= 0)
1765 {
1766 EV_WIN32_CLOSE_FD (evpipe [0]); 3407 EV_WIN32_CLOSE_FD (evpipe [0]);
1767 EV_WIN32_CLOSE_FD (evpipe [1]); 3408
3409 evpipe_init (EV_A);
3410 /* iterate over everything, in case we missed something before */
3411 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1768 } 3412 }
1769 3413 #endif
1770 evpipe_init (EV_A);
1771 /* now iterate over everything, in case we missed something */
1772 pipecb (EV_A_ &pipe_w, EV_READ);
1773 } 3414 }
1774 3415
1775 postfork = 0; 3416 postfork = 0;
1776} 3417}
1777 3418
1778#if EV_MULTIPLICITY 3419#if EV_MULTIPLICITY
1779 3420
3421ecb_cold
1780struct ev_loop * 3422struct ev_loop *
1781ev_loop_new (unsigned int flags) 3423ev_loop_new (unsigned int flags) EV_NOEXCEPT
1782{ 3424{
1783 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3425 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1784 3426
1785 memset (EV_A, 0, sizeof (struct ev_loop)); 3427 memset (EV_A, 0, sizeof (struct ev_loop));
1786 loop_init (EV_A_ flags); 3428 loop_init (EV_A_ flags);
1787 3429
1788 if (ev_backend (EV_A)) 3430 if (ev_backend (EV_A))
1789 return EV_A; 3431 return EV_A;
1790 3432
3433 ev_free (EV_A);
1791 return 0; 3434 return 0;
1792} 3435}
1793 3436
1794void
1795ev_loop_destroy (EV_P)
1796{
1797 loop_destroy (EV_A);
1798 ev_free (loop);
1799}
1800
1801void
1802ev_loop_fork (EV_P)
1803{
1804 postfork = 1; /* must be in line with ev_default_fork */
1805}
1806#endif /* multiplicity */ 3437#endif /* multiplicity */
1807 3438
1808#if EV_VERIFY 3439#if EV_VERIFY
1809static void noinline 3440ecb_noinline ecb_cold
3441static void
1810verify_watcher (EV_P_ W w) 3442verify_watcher (EV_P_ W w)
1811{ 3443{
1812 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3444 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1813 3445
1814 if (w->pending) 3446 if (w->pending)
1815 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3447 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1816} 3448}
1817 3449
1818static void noinline 3450ecb_noinline ecb_cold
3451static void
1819verify_heap (EV_P_ ANHE *heap, int N) 3452verify_heap (EV_P_ ANHE *heap, int N)
1820{ 3453{
1821 int i; 3454 int i;
1822 3455
1823 for (i = HEAP0; i < N + HEAP0; ++i) 3456 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1828 3461
1829 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3462 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1830 } 3463 }
1831} 3464}
1832 3465
1833static void noinline 3466ecb_noinline ecb_cold
3467static void
1834array_verify (EV_P_ W *ws, int cnt) 3468array_verify (EV_P_ W *ws, int cnt)
1835{ 3469{
1836 while (cnt--) 3470 while (cnt--)
1837 { 3471 {
1838 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3472 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1839 verify_watcher (EV_A_ ws [cnt]); 3473 verify_watcher (EV_A_ ws [cnt]);
1840 } 3474 }
1841} 3475}
1842#endif 3476#endif
1843 3477
1844#if EV_MINIMAL < 2 3478#if EV_FEATURE_API
1845void 3479void ecb_cold
1846ev_loop_verify (EV_P) 3480ev_verify (EV_P) EV_NOEXCEPT
1847{ 3481{
1848#if EV_VERIFY 3482#if EV_VERIFY
1849 int i; 3483 int i;
1850 WL w; 3484 WL w, w2;
1851 3485
1852 assert (activecnt >= -1); 3486 assert (activecnt >= -1);
1853 3487
1854 assert (fdchangemax >= fdchangecnt); 3488 assert (fdchangemax >= fdchangecnt);
1855 for (i = 0; i < fdchangecnt; ++i) 3489 for (i = 0; i < fdchangecnt; ++i)
1856 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3490 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1857 3491
1858 assert (anfdmax >= 0); 3492 assert (anfdmax >= 0);
1859 for (i = 0; i < anfdmax; ++i) 3493 for (i = 0; i < anfdmax; ++i)
3494 {
3495 int j = 0;
3496
1860 for (w = anfds [i].head; w; w = w->next) 3497 for (w = w2 = anfds [i].head; w; w = w->next)
1861 { 3498 {
1862 verify_watcher (EV_A_ (W)w); 3499 verify_watcher (EV_A_ (W)w);
3500
3501 if (j++ & 1)
3502 {
3503 assert (("libev: io watcher list contains a loop", w != w2));
3504 w2 = w2->next;
3505 }
3506
1863 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3507 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1864 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 3508 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1865 } 3509 }
3510 }
1866 3511
1867 assert (timermax >= timercnt); 3512 assert (timermax >= timercnt);
1868 verify_heap (EV_A_ timers, timercnt); 3513 verify_heap (EV_A_ timers, timercnt);
1869 3514
1870#if EV_PERIODIC_ENABLE 3515#if EV_PERIODIC_ENABLE
… …
1885#if EV_FORK_ENABLE 3530#if EV_FORK_ENABLE
1886 assert (forkmax >= forkcnt); 3531 assert (forkmax >= forkcnt);
1887 array_verify (EV_A_ (W *)forks, forkcnt); 3532 array_verify (EV_A_ (W *)forks, forkcnt);
1888#endif 3533#endif
1889 3534
3535#if EV_CLEANUP_ENABLE
3536 assert (cleanupmax >= cleanupcnt);
3537 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
3538#endif
3539
1890#if EV_ASYNC_ENABLE 3540#if EV_ASYNC_ENABLE
1891 assert (asyncmax >= asynccnt); 3541 assert (asyncmax >= asynccnt);
1892 array_verify (EV_A_ (W *)asyncs, asynccnt); 3542 array_verify (EV_A_ (W *)asyncs, asynccnt);
1893#endif 3543#endif
1894 3544
3545#if EV_PREPARE_ENABLE
1895 assert (preparemax >= preparecnt); 3546 assert (preparemax >= preparecnt);
1896 array_verify (EV_A_ (W *)prepares, preparecnt); 3547 array_verify (EV_A_ (W *)prepares, preparecnt);
3548#endif
1897 3549
3550#if EV_CHECK_ENABLE
1898 assert (checkmax >= checkcnt); 3551 assert (checkmax >= checkcnt);
1899 array_verify (EV_A_ (W *)checks, checkcnt); 3552 array_verify (EV_A_ (W *)checks, checkcnt);
3553#endif
1900 3554
1901# if 0 3555# if 0
3556#if EV_CHILD_ENABLE
1902 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 3557 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1903 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending) 3558 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
3559#endif
1904# endif 3560# endif
1905#endif 3561#endif
1906} 3562}
1907#endif 3563#endif
1908 3564
1909#if EV_MULTIPLICITY 3565#if EV_MULTIPLICITY
3566ecb_cold
1910struct ev_loop * 3567struct ev_loop *
1911ev_default_loop_init (unsigned int flags)
1912#else 3568#else
1913int 3569int
3570#endif
1914ev_default_loop (unsigned int flags) 3571ev_default_loop (unsigned int flags) EV_NOEXCEPT
1915#endif
1916{ 3572{
1917 if (!ev_default_loop_ptr) 3573 if (!ev_default_loop_ptr)
1918 { 3574 {
1919#if EV_MULTIPLICITY 3575#if EV_MULTIPLICITY
1920 EV_P = ev_default_loop_ptr = &default_loop_struct; 3576 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1924 3580
1925 loop_init (EV_A_ flags); 3581 loop_init (EV_A_ flags);
1926 3582
1927 if (ev_backend (EV_A)) 3583 if (ev_backend (EV_A))
1928 { 3584 {
1929#ifndef _WIN32 3585#if EV_CHILD_ENABLE
1930 ev_signal_init (&childev, childcb, SIGCHLD); 3586 ev_signal_init (&childev, childcb, SIGCHLD);
1931 ev_set_priority (&childev, EV_MAXPRI); 3587 ev_set_priority (&childev, EV_MAXPRI);
1932 ev_signal_start (EV_A_ &childev); 3588 ev_signal_start (EV_A_ &childev);
1933 ev_unref (EV_A); /* child watcher should not keep loop alive */ 3589 ev_unref (EV_A); /* child watcher should not keep loop alive */
1934#endif 3590#endif
… …
1939 3595
1940 return ev_default_loop_ptr; 3596 return ev_default_loop_ptr;
1941} 3597}
1942 3598
1943void 3599void
1944ev_default_destroy (void) 3600ev_loop_fork (EV_P) EV_NOEXCEPT
1945{ 3601{
1946#if EV_MULTIPLICITY 3602 postfork = 1;
1947 EV_P = ev_default_loop_ptr;
1948#endif
1949
1950 ev_default_loop_ptr = 0;
1951
1952#ifndef _WIN32
1953 ev_ref (EV_A); /* child watcher */
1954 ev_signal_stop (EV_A_ &childev);
1955#endif
1956
1957 loop_destroy (EV_A);
1958}
1959
1960void
1961ev_default_fork (void)
1962{
1963#if EV_MULTIPLICITY
1964 EV_P = ev_default_loop_ptr;
1965#endif
1966
1967 postfork = 1; /* must be in line with ev_loop_fork */
1968} 3603}
1969 3604
1970/*****************************************************************************/ 3605/*****************************************************************************/
1971 3606
1972void 3607void
… …
1974{ 3609{
1975 EV_CB_INVOKE ((W)w, revents); 3610 EV_CB_INVOKE ((W)w, revents);
1976} 3611}
1977 3612
1978unsigned int 3613unsigned int
1979ev_pending_count (EV_P) 3614ev_pending_count (EV_P) EV_NOEXCEPT
1980{ 3615{
1981 int pri; 3616 int pri;
1982 unsigned int count = 0; 3617 unsigned int count = 0;
1983 3618
1984 for (pri = NUMPRI; pri--; ) 3619 for (pri = NUMPRI; pri--; )
1985 count += pendingcnt [pri]; 3620 count += pendingcnt [pri];
1986 3621
1987 return count; 3622 return count;
1988} 3623}
1989 3624
1990void noinline 3625ecb_noinline
3626void
1991ev_invoke_pending (EV_P) 3627ev_invoke_pending (EV_P)
1992{ 3628{
1993 int pri; 3629 pendingpri = NUMPRI;
1994 3630
1995 for (pri = NUMPRI; pri--; ) 3631 do
3632 {
3633 --pendingpri;
3634
3635 /* pendingpri possibly gets modified in the inner loop */
1996 while (pendingcnt [pri]) 3636 while (pendingcnt [pendingpri])
1997 { 3637 {
1998 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3638 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
1999 3639
2000 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2001 /* ^ this is no longer true, as pending_w could be here */
2002
2003 p->w->pending = 0; 3640 p->w->pending = 0;
2004 EV_CB_INVOKE (p->w, p->events); 3641 EV_CB_INVOKE (p->w, p->events);
2005 EV_FREQUENT_CHECK; 3642 EV_FREQUENT_CHECK;
2006 } 3643 }
3644 }
3645 while (pendingpri);
2007} 3646}
2008 3647
2009#if EV_IDLE_ENABLE 3648#if EV_IDLE_ENABLE
2010/* make idle watchers pending. this handles the "call-idle */ 3649/* make idle watchers pending. this handles the "call-idle */
2011/* only when higher priorities are idle" logic */ 3650/* only when higher priorities are idle" logic */
2012inline_size void 3651inline_size void
2013idle_reify (EV_P) 3652idle_reify (EV_P)
2014{ 3653{
2015 if (expect_false (idleall)) 3654 if (ecb_expect_false (idleall))
2016 { 3655 {
2017 int pri; 3656 int pri;
2018 3657
2019 for (pri = NUMPRI; pri--; ) 3658 for (pri = NUMPRI; pri--; )
2020 { 3659 {
… …
2050 { 3689 {
2051 ev_at (w) += w->repeat; 3690 ev_at (w) += w->repeat;
2052 if (ev_at (w) < mn_now) 3691 if (ev_at (w) < mn_now)
2053 ev_at (w) = mn_now; 3692 ev_at (w) = mn_now;
2054 3693
2055 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 3694 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > EV_TS_CONST (0.)));
2056 3695
2057 ANHE_at_cache (timers [HEAP0]); 3696 ANHE_at_cache (timers [HEAP0]);
2058 downheap (timers, timercnt, HEAP0); 3697 downheap (timers, timercnt, HEAP0);
2059 } 3698 }
2060 else 3699 else
… …
2063 EV_FREQUENT_CHECK; 3702 EV_FREQUENT_CHECK;
2064 feed_reverse (EV_A_ (W)w); 3703 feed_reverse (EV_A_ (W)w);
2065 } 3704 }
2066 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 3705 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
2067 3706
2068 feed_reverse_done (EV_A_ EV_TIMEOUT); 3707 feed_reverse_done (EV_A_ EV_TIMER);
2069 } 3708 }
2070} 3709}
2071 3710
2072#if EV_PERIODIC_ENABLE 3711#if EV_PERIODIC_ENABLE
3712
3713ecb_noinline
3714static void
3715periodic_recalc (EV_P_ ev_periodic *w)
3716{
3717 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3718 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3719
3720 /* the above almost always errs on the low side */
3721 while (at <= ev_rt_now)
3722 {
3723 ev_tstamp nat = at + w->interval;
3724
3725 /* when resolution fails us, we use ev_rt_now */
3726 if (ecb_expect_false (nat == at))
3727 {
3728 at = ev_rt_now;
3729 break;
3730 }
3731
3732 at = nat;
3733 }
3734
3735 ev_at (w) = at;
3736}
3737
2073/* make periodics pending */ 3738/* make periodics pending */
2074inline_size void 3739inline_size void
2075periodics_reify (EV_P) 3740periodics_reify (EV_P)
2076{ 3741{
2077 EV_FREQUENT_CHECK; 3742 EV_FREQUENT_CHECK;
2078 3743
2079 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3744 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2080 { 3745 {
2081 int feed_count = 0;
2082
2083 do 3746 do
2084 { 3747 {
2085 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3748 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2086 3749
2087 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3750 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2096 ANHE_at_cache (periodics [HEAP0]); 3759 ANHE_at_cache (periodics [HEAP0]);
2097 downheap (periodics, periodiccnt, HEAP0); 3760 downheap (periodics, periodiccnt, HEAP0);
2098 } 3761 }
2099 else if (w->interval) 3762 else if (w->interval)
2100 { 3763 {
2101 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3764 periodic_recalc (EV_A_ w);
2102 /* if next trigger time is not sufficiently in the future, put it there */
2103 /* this might happen because of floating point inexactness */
2104 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2105 {
2106 ev_at (w) += w->interval;
2107
2108 /* if interval is unreasonably low we might still have a time in the past */
2109 /* so correct this. this will make the periodic very inexact, but the user */
2110 /* has effectively asked to get triggered more often than possible */
2111 if (ev_at (w) < ev_rt_now)
2112 ev_at (w) = ev_rt_now;
2113 }
2114
2115 ANHE_at_cache (periodics [HEAP0]); 3765 ANHE_at_cache (periodics [HEAP0]);
2116 downheap (periodics, periodiccnt, HEAP0); 3766 downheap (periodics, periodiccnt, HEAP0);
2117 } 3767 }
2118 else 3768 else
2119 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3769 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2126 feed_reverse_done (EV_A_ EV_PERIODIC); 3776 feed_reverse_done (EV_A_ EV_PERIODIC);
2127 } 3777 }
2128} 3778}
2129 3779
2130/* simply recalculate all periodics */ 3780/* simply recalculate all periodics */
2131/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 3781/* TODO: maybe ensure that at least one event happens when jumping forward? */
2132static void noinline 3782ecb_noinline ecb_cold
3783static void
2133periodics_reschedule (EV_P) 3784periodics_reschedule (EV_P)
2134{ 3785{
2135 int i; 3786 int i;
2136 3787
2137 /* adjust periodics after time jump */ 3788 /* adjust periodics after time jump */
… …
2140 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3791 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2141 3792
2142 if (w->reschedule_cb) 3793 if (w->reschedule_cb)
2143 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3794 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2144 else if (w->interval) 3795 else if (w->interval)
2145 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3796 periodic_recalc (EV_A_ w);
2146 3797
2147 ANHE_at_cache (periodics [i]); 3798 ANHE_at_cache (periodics [i]);
2148 } 3799 }
2149 3800
2150 reheap (periodics, periodiccnt); 3801 reheap (periodics, periodiccnt);
2151} 3802}
2152#endif 3803#endif
2153 3804
2154/* adjust all timers by a given offset */ 3805/* adjust all timers by a given offset */
2155static void noinline 3806ecb_noinline ecb_cold
3807static void
2156timers_reschedule (EV_P_ ev_tstamp adjust) 3808timers_reschedule (EV_P_ ev_tstamp adjust)
2157{ 3809{
2158 int i; 3810 int i;
2159 3811
2160 for (i = 0; i < timercnt; ++i) 3812 for (i = 0; i < timercnt; ++i)
… …
2169/* also detect if there was a timejump, and act accordingly */ 3821/* also detect if there was a timejump, and act accordingly */
2170inline_speed void 3822inline_speed void
2171time_update (EV_P_ ev_tstamp max_block) 3823time_update (EV_P_ ev_tstamp max_block)
2172{ 3824{
2173#if EV_USE_MONOTONIC 3825#if EV_USE_MONOTONIC
2174 if (expect_true (have_monotonic)) 3826 if (ecb_expect_true (have_monotonic))
2175 { 3827 {
2176 int i; 3828 int i;
2177 ev_tstamp odiff = rtmn_diff; 3829 ev_tstamp odiff = rtmn_diff;
2178 3830
2179 mn_now = get_clock (); 3831 mn_now = get_clock ();
2180 3832
2181 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3833 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
2182 /* interpolate in the meantime */ 3834 /* interpolate in the meantime */
2183 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 3835 if (ecb_expect_true (mn_now - now_floor < EV_TS_CONST (MIN_TIMEJUMP * .5)))
2184 { 3836 {
2185 ev_rt_now = rtmn_diff + mn_now; 3837 ev_rt_now = rtmn_diff + mn_now;
2186 return; 3838 return;
2187 } 3839 }
2188 3840
… …
2197 * doesn't hurt either as we only do this on time-jumps or 3849 * doesn't hurt either as we only do this on time-jumps or
2198 * in the unlikely event of having been preempted here. 3850 * in the unlikely event of having been preempted here.
2199 */ 3851 */
2200 for (i = 4; --i; ) 3852 for (i = 4; --i; )
2201 { 3853 {
3854 ev_tstamp diff;
2202 rtmn_diff = ev_rt_now - mn_now; 3855 rtmn_diff = ev_rt_now - mn_now;
2203 3856
2204 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3857 diff = odiff - rtmn_diff;
3858
3859 if (ecb_expect_true ((diff < EV_TS_CONST (0.) ? -diff : diff) < EV_TS_CONST (MIN_TIMEJUMP)))
2205 return; /* all is well */ 3860 return; /* all is well */
2206 3861
2207 ev_rt_now = ev_time (); 3862 ev_rt_now = ev_time ();
2208 mn_now = get_clock (); 3863 mn_now = get_clock ();
2209 now_floor = mn_now; 3864 now_floor = mn_now;
… …
2218 else 3873 else
2219#endif 3874#endif
2220 { 3875 {
2221 ev_rt_now = ev_time (); 3876 ev_rt_now = ev_time ();
2222 3877
2223 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 3878 if (ecb_expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + EV_TS_CONST (MIN_TIMEJUMP)))
2224 { 3879 {
2225 /* adjust timers. this is easy, as the offset is the same for all of them */ 3880 /* adjust timers. this is easy, as the offset is the same for all of them */
2226 timers_reschedule (EV_A_ ev_rt_now - mn_now); 3881 timers_reschedule (EV_A_ ev_rt_now - mn_now);
2227#if EV_PERIODIC_ENABLE 3882#if EV_PERIODIC_ENABLE
2228 periodics_reschedule (EV_A); 3883 periodics_reschedule (EV_A);
… …
2231 3886
2232 mn_now = ev_rt_now; 3887 mn_now = ev_rt_now;
2233 } 3888 }
2234} 3889}
2235 3890
2236void 3891int
2237ev_loop (EV_P_ int flags) 3892ev_run (EV_P_ int flags)
2238{ 3893{
2239#if EV_MINIMAL < 2 3894#if EV_FEATURE_API
2240 ++loop_depth; 3895 ++loop_depth;
2241#endif 3896#endif
2242 3897
2243 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 3898 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2244 3899
2245 loop_done = EVUNLOOP_CANCEL; 3900 loop_done = EVBREAK_CANCEL;
2246 3901
2247 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 3902 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2248 3903
2249 do 3904 do
2250 { 3905 {
2251#if EV_VERIFY >= 2 3906#if EV_VERIFY >= 2
2252 ev_loop_verify (EV_A); 3907 ev_verify (EV_A);
2253#endif 3908#endif
2254 3909
2255#ifndef _WIN32 3910#ifndef _WIN32
2256 if (expect_false (curpid)) /* penalise the forking check even more */ 3911 if (ecb_expect_false (curpid)) /* penalise the forking check even more */
2257 if (expect_false (getpid () != curpid)) 3912 if (ecb_expect_false (getpid () != curpid))
2258 { 3913 {
2259 curpid = getpid (); 3914 curpid = getpid ();
2260 postfork = 1; 3915 postfork = 1;
2261 } 3916 }
2262#endif 3917#endif
2263 3918
2264#if EV_FORK_ENABLE 3919#if EV_FORK_ENABLE
2265 /* we might have forked, so queue fork handlers */ 3920 /* we might have forked, so queue fork handlers */
2266 if (expect_false (postfork)) 3921 if (ecb_expect_false (postfork))
2267 if (forkcnt) 3922 if (forkcnt)
2268 { 3923 {
2269 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3924 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2270 EV_INVOKE_PENDING; 3925 EV_INVOKE_PENDING;
2271 } 3926 }
2272#endif 3927#endif
2273 3928
3929#if EV_PREPARE_ENABLE
2274 /* queue prepare watchers (and execute them) */ 3930 /* queue prepare watchers (and execute them) */
2275 if (expect_false (preparecnt)) 3931 if (ecb_expect_false (preparecnt))
2276 { 3932 {
2277 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3933 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2278 EV_INVOKE_PENDING; 3934 EV_INVOKE_PENDING;
2279 } 3935 }
3936#endif
2280 3937
2281 if (expect_false (loop_done)) 3938 if (ecb_expect_false (loop_done))
2282 break; 3939 break;
2283 3940
2284 /* we might have forked, so reify kernel state if necessary */ 3941 /* we might have forked, so reify kernel state if necessary */
2285 if (expect_false (postfork)) 3942 if (ecb_expect_false (postfork))
2286 loop_fork (EV_A); 3943 loop_fork (EV_A);
2287 3944
2288 /* update fd-related kernel structures */ 3945 /* update fd-related kernel structures */
2289 fd_reify (EV_A); 3946 fd_reify (EV_A);
2290 3947
2291 /* calculate blocking time */ 3948 /* calculate blocking time */
2292 { 3949 {
2293 ev_tstamp waittime = 0.; 3950 ev_tstamp waittime = 0.;
2294 ev_tstamp sleeptime = 0.; 3951 ev_tstamp sleeptime = 0.;
2295 3952
3953 /* remember old timestamp for io_blocktime calculation */
3954 ev_tstamp prev_mn_now = mn_now;
3955
3956 /* update time to cancel out callback processing overhead */
3957 time_update (EV_A_ EV_TS_CONST (EV_TSTAMP_HUGE));
3958
3959 /* from now on, we want a pipe-wake-up */
3960 pipe_write_wanted = 1;
3961
3962 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3963
2296 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3964 if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2297 { 3965 {
2298 /* remember old timestamp for io_blocktime calculation */
2299 ev_tstamp prev_mn_now = mn_now;
2300
2301 /* update time to cancel out callback processing overhead */
2302 time_update (EV_A_ 1e100);
2303
2304 waittime = MAX_BLOCKTIME; 3966 waittime = EV_TS_CONST (MAX_BLOCKTIME);
2305 3967
2306 if (timercnt) 3968 if (timercnt)
2307 { 3969 {
2308 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3970 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2309 if (waittime > to) waittime = to; 3971 if (waittime > to) waittime = to;
2310 } 3972 }
2311 3973
2312#if EV_PERIODIC_ENABLE 3974#if EV_PERIODIC_ENABLE
2313 if (periodiccnt) 3975 if (periodiccnt)
2314 { 3976 {
2315 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3977 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2316 if (waittime > to) waittime = to; 3978 if (waittime > to) waittime = to;
2317 } 3979 }
2318#endif 3980#endif
2319 3981
2320 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3982 /* don't let timeouts decrease the waittime below timeout_blocktime */
2321 if (expect_false (waittime < timeout_blocktime)) 3983 if (ecb_expect_false (waittime < timeout_blocktime))
2322 waittime = timeout_blocktime; 3984 waittime = timeout_blocktime;
2323 3985
3986 /* now there are two more special cases left, either we have
3987 * already-expired timers, so we should not sleep, or we have timers
3988 * that expire very soon, in which case we need to wait for a minimum
3989 * amount of time for some event loop backends.
3990 */
3991 if (ecb_expect_false (waittime < backend_mintime))
3992 waittime = waittime <= EV_TS_CONST (0.)
3993 ? EV_TS_CONST (0.)
3994 : backend_mintime;
3995
2324 /* extra check because io_blocktime is commonly 0 */ 3996 /* extra check because io_blocktime is commonly 0 */
2325 if (expect_false (io_blocktime)) 3997 if (ecb_expect_false (io_blocktime))
2326 { 3998 {
2327 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3999 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2328 4000
2329 if (sleeptime > waittime - backend_fudge) 4001 if (sleeptime > waittime - backend_mintime)
2330 sleeptime = waittime - backend_fudge; 4002 sleeptime = waittime - backend_mintime;
2331 4003
2332 if (expect_true (sleeptime > 0.)) 4004 if (ecb_expect_true (sleeptime > EV_TS_CONST (0.)))
2333 { 4005 {
2334 ev_sleep (sleeptime); 4006 ev_sleep (sleeptime);
2335 waittime -= sleeptime; 4007 waittime -= sleeptime;
2336 } 4008 }
2337 } 4009 }
2338 } 4010 }
2339 4011
2340#if EV_MINIMAL < 2 4012#if EV_FEATURE_API
2341 ++loop_count; 4013 ++loop_count;
2342#endif 4014#endif
2343 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 4015 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2344 backend_poll (EV_A_ waittime); 4016 backend_poll (EV_A_ waittime);
2345 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 4017 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
4018
4019 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
4020
4021 ECB_MEMORY_FENCE_ACQUIRE;
4022 if (pipe_write_skipped)
4023 {
4024 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
4025 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
4026 }
2346 4027
2347 /* update ev_rt_now, do magic */ 4028 /* update ev_rt_now, do magic */
2348 time_update (EV_A_ waittime + sleeptime); 4029 time_update (EV_A_ waittime + sleeptime);
2349 } 4030 }
2350 4031
… …
2357#if EV_IDLE_ENABLE 4038#if EV_IDLE_ENABLE
2358 /* queue idle watchers unless other events are pending */ 4039 /* queue idle watchers unless other events are pending */
2359 idle_reify (EV_A); 4040 idle_reify (EV_A);
2360#endif 4041#endif
2361 4042
4043#if EV_CHECK_ENABLE
2362 /* queue check watchers, to be executed first */ 4044 /* queue check watchers, to be executed first */
2363 if (expect_false (checkcnt)) 4045 if (ecb_expect_false (checkcnt))
2364 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 4046 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
4047#endif
2365 4048
2366 EV_INVOKE_PENDING; 4049 EV_INVOKE_PENDING;
2367 } 4050 }
2368 while (expect_true ( 4051 while (ecb_expect_true (
2369 activecnt 4052 activecnt
2370 && !loop_done 4053 && !loop_done
2371 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 4054 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2372 )); 4055 ));
2373 4056
2374 if (loop_done == EVUNLOOP_ONE) 4057 if (loop_done == EVBREAK_ONE)
2375 loop_done = EVUNLOOP_CANCEL; 4058 loop_done = EVBREAK_CANCEL;
2376 4059
2377#if EV_MINIMAL < 2 4060#if EV_FEATURE_API
2378 --loop_depth; 4061 --loop_depth;
2379#endif 4062#endif
2380}
2381 4063
4064 return activecnt;
4065}
4066
2382void 4067void
2383ev_unloop (EV_P_ int how) 4068ev_break (EV_P_ int how) EV_NOEXCEPT
2384{ 4069{
2385 loop_done = how; 4070 loop_done = how;
2386} 4071}
2387 4072
2388void 4073void
2389ev_ref (EV_P) 4074ev_ref (EV_P) EV_NOEXCEPT
2390{ 4075{
2391 ++activecnt; 4076 ++activecnt;
2392} 4077}
2393 4078
2394void 4079void
2395ev_unref (EV_P) 4080ev_unref (EV_P) EV_NOEXCEPT
2396{ 4081{
2397 --activecnt; 4082 --activecnt;
2398} 4083}
2399 4084
2400void 4085void
2401ev_now_update (EV_P) 4086ev_now_update (EV_P) EV_NOEXCEPT
2402{ 4087{
2403 time_update (EV_A_ 1e100); 4088 time_update (EV_A_ EV_TSTAMP_HUGE);
2404} 4089}
2405 4090
2406void 4091void
2407ev_suspend (EV_P) 4092ev_suspend (EV_P) EV_NOEXCEPT
2408{ 4093{
2409 ev_now_update (EV_A); 4094 ev_now_update (EV_A);
2410} 4095}
2411 4096
2412void 4097void
2413ev_resume (EV_P) 4098ev_resume (EV_P) EV_NOEXCEPT
2414{ 4099{
2415 ev_tstamp mn_prev = mn_now; 4100 ev_tstamp mn_prev = mn_now;
2416 4101
2417 ev_now_update (EV_A); 4102 ev_now_update (EV_A);
2418 timers_reschedule (EV_A_ mn_now - mn_prev); 4103 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2435inline_size void 4120inline_size void
2436wlist_del (WL *head, WL elem) 4121wlist_del (WL *head, WL elem)
2437{ 4122{
2438 while (*head) 4123 while (*head)
2439 { 4124 {
2440 if (expect_true (*head == elem)) 4125 if (ecb_expect_true (*head == elem))
2441 { 4126 {
2442 *head = elem->next; 4127 *head = elem->next;
2443 break; 4128 break;
2444 } 4129 }
2445 4130
… …
2457 w->pending = 0; 4142 w->pending = 0;
2458 } 4143 }
2459} 4144}
2460 4145
2461int 4146int
2462ev_clear_pending (EV_P_ void *w) 4147ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
2463{ 4148{
2464 W w_ = (W)w; 4149 W w_ = (W)w;
2465 int pending = w_->pending; 4150 int pending = w_->pending;
2466 4151
2467 if (expect_true (pending)) 4152 if (ecb_expect_true (pending))
2468 { 4153 {
2469 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 4154 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2470 p->w = (W)&pending_w; 4155 p->w = (W)&pending_w;
2471 w_->pending = 0; 4156 w_->pending = 0;
2472 return p->events; 4157 return p->events;
… …
2499 w->active = 0; 4184 w->active = 0;
2500} 4185}
2501 4186
2502/*****************************************************************************/ 4187/*****************************************************************************/
2503 4188
2504void noinline 4189ecb_noinline
4190void
2505ev_io_start (EV_P_ ev_io *w) 4191ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
2506{ 4192{
2507 int fd = w->fd; 4193 int fd = w->fd;
2508 4194
2509 if (expect_false (ev_is_active (w))) 4195 if (ecb_expect_false (ev_is_active (w)))
2510 return; 4196 return;
2511 4197
2512 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 4198 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2513 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 4199 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2514 4200
4201#if EV_VERIFY >= 2
4202 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
4203#endif
2515 EV_FREQUENT_CHECK; 4204 EV_FREQUENT_CHECK;
2516 4205
2517 ev_start (EV_A_ (W)w, 1); 4206 ev_start (EV_A_ (W)w, 1);
2518 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 4207 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
2519 wlist_add (&anfds[fd].head, (WL)w); 4208 wlist_add (&anfds[fd].head, (WL)w);
4209
4210 /* common bug, apparently */
4211 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
2520 4212
2521 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 4213 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2522 w->events &= ~EV__IOFDSET; 4214 w->events &= ~EV__IOFDSET;
2523 4215
2524 EV_FREQUENT_CHECK; 4216 EV_FREQUENT_CHECK;
2525} 4217}
2526 4218
2527void noinline 4219ecb_noinline
4220void
2528ev_io_stop (EV_P_ ev_io *w) 4221ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
2529{ 4222{
2530 clear_pending (EV_A_ (W)w); 4223 clear_pending (EV_A_ (W)w);
2531 if (expect_false (!ev_is_active (w))) 4224 if (ecb_expect_false (!ev_is_active (w)))
2532 return; 4225 return;
2533 4226
2534 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 4227 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2535 4228
4229#if EV_VERIFY >= 2
4230 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
4231#endif
2536 EV_FREQUENT_CHECK; 4232 EV_FREQUENT_CHECK;
2537 4233
2538 wlist_del (&anfds[w->fd].head, (WL)w); 4234 wlist_del (&anfds[w->fd].head, (WL)w);
2539 ev_stop (EV_A_ (W)w); 4235 ev_stop (EV_A_ (W)w);
2540 4236
2541 fd_change (EV_A_ w->fd, 1); 4237 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2542 4238
2543 EV_FREQUENT_CHECK; 4239 EV_FREQUENT_CHECK;
2544} 4240}
2545 4241
2546void noinline 4242ecb_noinline
4243void
2547ev_timer_start (EV_P_ ev_timer *w) 4244ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
2548{ 4245{
2549 if (expect_false (ev_is_active (w))) 4246 if (ecb_expect_false (ev_is_active (w)))
2550 return; 4247 return;
2551 4248
2552 ev_at (w) += mn_now; 4249 ev_at (w) += mn_now;
2553 4250
2554 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 4251 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2555 4252
2556 EV_FREQUENT_CHECK; 4253 EV_FREQUENT_CHECK;
2557 4254
2558 ++timercnt; 4255 ++timercnt;
2559 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 4256 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
2560 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 4257 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
2561 ANHE_w (timers [ev_active (w)]) = (WT)w; 4258 ANHE_w (timers [ev_active (w)]) = (WT)w;
2562 ANHE_at_cache (timers [ev_active (w)]); 4259 ANHE_at_cache (timers [ev_active (w)]);
2563 upheap (timers, ev_active (w)); 4260 upheap (timers, ev_active (w));
2564 4261
2565 EV_FREQUENT_CHECK; 4262 EV_FREQUENT_CHECK;
2566 4263
2567 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 4264 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2568} 4265}
2569 4266
2570void noinline 4267ecb_noinline
4268void
2571ev_timer_stop (EV_P_ ev_timer *w) 4269ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
2572{ 4270{
2573 clear_pending (EV_A_ (W)w); 4271 clear_pending (EV_A_ (W)w);
2574 if (expect_false (!ev_is_active (w))) 4272 if (ecb_expect_false (!ev_is_active (w)))
2575 return; 4273 return;
2576 4274
2577 EV_FREQUENT_CHECK; 4275 EV_FREQUENT_CHECK;
2578 4276
2579 { 4277 {
… …
2581 4279
2582 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 4280 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2583 4281
2584 --timercnt; 4282 --timercnt;
2585 4283
2586 if (expect_true (active < timercnt + HEAP0)) 4284 if (ecb_expect_true (active < timercnt + HEAP0))
2587 { 4285 {
2588 timers [active] = timers [timercnt + HEAP0]; 4286 timers [active] = timers [timercnt + HEAP0];
2589 adjustheap (timers, timercnt, active); 4287 adjustheap (timers, timercnt, active);
2590 } 4288 }
2591 } 4289 }
… …
2595 ev_stop (EV_A_ (W)w); 4293 ev_stop (EV_A_ (W)w);
2596 4294
2597 EV_FREQUENT_CHECK; 4295 EV_FREQUENT_CHECK;
2598} 4296}
2599 4297
2600void noinline 4298ecb_noinline
4299void
2601ev_timer_again (EV_P_ ev_timer *w) 4300ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
2602{ 4301{
2603 EV_FREQUENT_CHECK; 4302 EV_FREQUENT_CHECK;
4303
4304 clear_pending (EV_A_ (W)w);
2604 4305
2605 if (ev_is_active (w)) 4306 if (ev_is_active (w))
2606 { 4307 {
2607 if (w->repeat) 4308 if (w->repeat)
2608 { 4309 {
… …
2621 4322
2622 EV_FREQUENT_CHECK; 4323 EV_FREQUENT_CHECK;
2623} 4324}
2624 4325
2625ev_tstamp 4326ev_tstamp
2626ev_timer_remaining (EV_P_ ev_timer *w) 4327ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
2627{ 4328{
2628 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4329 return ev_at (w) - (ev_is_active (w) ? mn_now : EV_TS_CONST (0.));
2629} 4330}
2630 4331
2631#if EV_PERIODIC_ENABLE 4332#if EV_PERIODIC_ENABLE
2632void noinline 4333ecb_noinline
4334void
2633ev_periodic_start (EV_P_ ev_periodic *w) 4335ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
2634{ 4336{
2635 if (expect_false (ev_is_active (w))) 4337 if (ecb_expect_false (ev_is_active (w)))
2636 return; 4338 return;
4339
4340#if EV_USE_TIMERFD
4341 if (timerfd == -2)
4342 evtimerfd_init (EV_A);
4343#endif
2637 4344
2638 if (w->reschedule_cb) 4345 if (w->reschedule_cb)
2639 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4346 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2640 else if (w->interval) 4347 else if (w->interval)
2641 { 4348 {
2642 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 4349 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2643 /* this formula differs from the one in periodic_reify because we do not always round up */ 4350 periodic_recalc (EV_A_ w);
2644 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2645 } 4351 }
2646 else 4352 else
2647 ev_at (w) = w->offset; 4353 ev_at (w) = w->offset;
2648 4354
2649 EV_FREQUENT_CHECK; 4355 EV_FREQUENT_CHECK;
2650 4356
2651 ++periodiccnt; 4357 ++periodiccnt;
2652 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4358 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2653 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4359 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
2654 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4360 ANHE_w (periodics [ev_active (w)]) = (WT)w;
2655 ANHE_at_cache (periodics [ev_active (w)]); 4361 ANHE_at_cache (periodics [ev_active (w)]);
2656 upheap (periodics, ev_active (w)); 4362 upheap (periodics, ev_active (w));
2657 4363
2658 EV_FREQUENT_CHECK; 4364 EV_FREQUENT_CHECK;
2659 4365
2660 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4366 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2661} 4367}
2662 4368
2663void noinline 4369ecb_noinline
4370void
2664ev_periodic_stop (EV_P_ ev_periodic *w) 4371ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
2665{ 4372{
2666 clear_pending (EV_A_ (W)w); 4373 clear_pending (EV_A_ (W)w);
2667 if (expect_false (!ev_is_active (w))) 4374 if (ecb_expect_false (!ev_is_active (w)))
2668 return; 4375 return;
2669 4376
2670 EV_FREQUENT_CHECK; 4377 EV_FREQUENT_CHECK;
2671 4378
2672 { 4379 {
… …
2674 4381
2675 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 4382 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2676 4383
2677 --periodiccnt; 4384 --periodiccnt;
2678 4385
2679 if (expect_true (active < periodiccnt + HEAP0)) 4386 if (ecb_expect_true (active < periodiccnt + HEAP0))
2680 { 4387 {
2681 periodics [active] = periodics [periodiccnt + HEAP0]; 4388 periodics [active] = periodics [periodiccnt + HEAP0];
2682 adjustheap (periodics, periodiccnt, active); 4389 adjustheap (periodics, periodiccnt, active);
2683 } 4390 }
2684 } 4391 }
… …
2686 ev_stop (EV_A_ (W)w); 4393 ev_stop (EV_A_ (W)w);
2687 4394
2688 EV_FREQUENT_CHECK; 4395 EV_FREQUENT_CHECK;
2689} 4396}
2690 4397
2691void noinline 4398ecb_noinline
4399void
2692ev_periodic_again (EV_P_ ev_periodic *w) 4400ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
2693{ 4401{
2694 /* TODO: use adjustheap and recalculation */ 4402 /* TODO: use adjustheap and recalculation */
2695 ev_periodic_stop (EV_A_ w); 4403 ev_periodic_stop (EV_A_ w);
2696 ev_periodic_start (EV_A_ w); 4404 ev_periodic_start (EV_A_ w);
2697} 4405}
… …
2699 4407
2700#ifndef SA_RESTART 4408#ifndef SA_RESTART
2701# define SA_RESTART 0 4409# define SA_RESTART 0
2702#endif 4410#endif
2703 4411
2704void noinline 4412#if EV_SIGNAL_ENABLE
4413
4414ecb_noinline
4415void
2705ev_signal_start (EV_P_ ev_signal *w) 4416ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
2706{ 4417{
2707 if (expect_false (ev_is_active (w))) 4418 if (ecb_expect_false (ev_is_active (w)))
2708 return; 4419 return;
2709 4420
2710 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4421 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2711 4422
2712#if EV_MULTIPLICITY 4423#if EV_MULTIPLICITY
2713 assert (("libev: a signal must not be attached to two different loops", 4424 assert (("libev: a signal must not be attached to two different loops",
2714 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4425 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2715 4426
2716 signals [w->signum - 1].loop = EV_A; 4427 signals [w->signum - 1].loop = EV_A;
4428 ECB_MEMORY_FENCE_RELEASE;
2717#endif 4429#endif
2718 4430
2719 EV_FREQUENT_CHECK; 4431 EV_FREQUENT_CHECK;
2720 4432
2721#if EV_USE_SIGNALFD 4433#if EV_USE_SIGNALFD
… …
2768 sa.sa_handler = ev_sighandler; 4480 sa.sa_handler = ev_sighandler;
2769 sigfillset (&sa.sa_mask); 4481 sigfillset (&sa.sa_mask);
2770 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 4482 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2771 sigaction (w->signum, &sa, 0); 4483 sigaction (w->signum, &sa, 0);
2772 4484
4485 if (origflags & EVFLAG_NOSIGMASK)
4486 {
2773 sigemptyset (&sa.sa_mask); 4487 sigemptyset (&sa.sa_mask);
2774 sigaddset (&sa.sa_mask, w->signum); 4488 sigaddset (&sa.sa_mask, w->signum);
2775 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 4489 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
4490 }
2776#endif 4491#endif
2777 } 4492 }
2778 4493
2779 EV_FREQUENT_CHECK; 4494 EV_FREQUENT_CHECK;
2780} 4495}
2781 4496
2782void noinline 4497ecb_noinline
4498void
2783ev_signal_stop (EV_P_ ev_signal *w) 4499ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
2784{ 4500{
2785 clear_pending (EV_A_ (W)w); 4501 clear_pending (EV_A_ (W)w);
2786 if (expect_false (!ev_is_active (w))) 4502 if (ecb_expect_false (!ev_is_active (w)))
2787 return; 4503 return;
2788 4504
2789 EV_FREQUENT_CHECK; 4505 EV_FREQUENT_CHECK;
2790 4506
2791 wlist_del (&signals [w->signum - 1].head, (WL)w); 4507 wlist_del (&signals [w->signum - 1].head, (WL)w);
… …
2814 } 4530 }
2815 4531
2816 EV_FREQUENT_CHECK; 4532 EV_FREQUENT_CHECK;
2817} 4533}
2818 4534
4535#endif
4536
4537#if EV_CHILD_ENABLE
4538
2819void 4539void
2820ev_child_start (EV_P_ ev_child *w) 4540ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
2821{ 4541{
2822#if EV_MULTIPLICITY 4542#if EV_MULTIPLICITY
2823 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4543 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2824#endif 4544#endif
2825 if (expect_false (ev_is_active (w))) 4545 if (ecb_expect_false (ev_is_active (w)))
2826 return; 4546 return;
2827 4547
2828 EV_FREQUENT_CHECK; 4548 EV_FREQUENT_CHECK;
2829 4549
2830 ev_start (EV_A_ (W)w, 1); 4550 ev_start (EV_A_ (W)w, 1);
2831 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4551 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2832 4552
2833 EV_FREQUENT_CHECK; 4553 EV_FREQUENT_CHECK;
2834} 4554}
2835 4555
2836void 4556void
2837ev_child_stop (EV_P_ ev_child *w) 4557ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
2838{ 4558{
2839 clear_pending (EV_A_ (W)w); 4559 clear_pending (EV_A_ (W)w);
2840 if (expect_false (!ev_is_active (w))) 4560 if (ecb_expect_false (!ev_is_active (w)))
2841 return; 4561 return;
2842 4562
2843 EV_FREQUENT_CHECK; 4563 EV_FREQUENT_CHECK;
2844 4564
2845 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4565 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2846 ev_stop (EV_A_ (W)w); 4566 ev_stop (EV_A_ (W)w);
2847 4567
2848 EV_FREQUENT_CHECK; 4568 EV_FREQUENT_CHECK;
2849} 4569}
4570
4571#endif
2850 4572
2851#if EV_STAT_ENABLE 4573#if EV_STAT_ENABLE
2852 4574
2853# ifdef _WIN32 4575# ifdef _WIN32
2854# undef lstat 4576# undef lstat
… …
2857 4579
2858#define DEF_STAT_INTERVAL 5.0074891 4580#define DEF_STAT_INTERVAL 5.0074891
2859#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4581#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2860#define MIN_STAT_INTERVAL 0.1074891 4582#define MIN_STAT_INTERVAL 0.1074891
2861 4583
2862static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4584ecb_noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2863 4585
2864#if EV_USE_INOTIFY 4586#if EV_USE_INOTIFY
2865 4587
2866/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ 4588/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
2867# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4589# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2868 4590
2869static void noinline 4591ecb_noinline
4592static void
2870infy_add (EV_P_ ev_stat *w) 4593infy_add (EV_P_ ev_stat *w)
2871{ 4594{
2872 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); 4595 w->wd = inotify_add_watch (fs_fd, w->path,
4596 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4597 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4598 | IN_DONT_FOLLOW | IN_MASK_ADD);
2873 4599
2874 if (w->wd >= 0) 4600 if (w->wd >= 0)
2875 { 4601 {
2876 struct statfs sfs; 4602 struct statfs sfs;
2877 4603
… …
2881 4607
2882 if (!fs_2625) 4608 if (!fs_2625)
2883 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4609 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2884 else if (!statfs (w->path, &sfs) 4610 else if (!statfs (w->path, &sfs)
2885 && (sfs.f_type == 0x1373 /* devfs */ 4611 && (sfs.f_type == 0x1373 /* devfs */
4612 || sfs.f_type == 0x4006 /* fat */
4613 || sfs.f_type == 0x4d44 /* msdos */
2886 || sfs.f_type == 0xEF53 /* ext2/3 */ 4614 || sfs.f_type == 0xEF53 /* ext2/3 */
4615 || sfs.f_type == 0x72b6 /* jffs2 */
4616 || sfs.f_type == 0x858458f6 /* ramfs */
4617 || sfs.f_type == 0x5346544e /* ntfs */
2887 || sfs.f_type == 0x3153464a /* jfs */ 4618 || sfs.f_type == 0x3153464a /* jfs */
4619 || sfs.f_type == 0x9123683e /* btrfs */
2888 || sfs.f_type == 0x52654973 /* reiser3 */ 4620 || sfs.f_type == 0x52654973 /* reiser3 */
2889 || sfs.f_type == 0x01021994 /* tempfs */ 4621 || sfs.f_type == 0x01021994 /* tmpfs */
2890 || sfs.f_type == 0x58465342 /* xfs */)) 4622 || sfs.f_type == 0x58465342 /* xfs */))
2891 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4623 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
2892 else 4624 else
2893 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4625 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2894 } 4626 }
… …
2915 if (!pend || pend == path) 4647 if (!pend || pend == path)
2916 break; 4648 break;
2917 4649
2918 *pend = 0; 4650 *pend = 0;
2919 w->wd = inotify_add_watch (fs_fd, path, mask); 4651 w->wd = inotify_add_watch (fs_fd, path, mask);
2920 } 4652 }
2921 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 4653 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2922 } 4654 }
2923 } 4655 }
2924 4656
2925 if (w->wd >= 0) 4657 if (w->wd >= 0)
2926 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4658 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2927 4659
2928 /* now re-arm timer, if required */ 4660 /* now re-arm timer, if required */
2929 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4661 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2930 ev_timer_again (EV_A_ &w->timer); 4662 ev_timer_again (EV_A_ &w->timer);
2931 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4663 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2932} 4664}
2933 4665
2934static void noinline 4666ecb_noinline
4667static void
2935infy_del (EV_P_ ev_stat *w) 4668infy_del (EV_P_ ev_stat *w)
2936{ 4669{
2937 int slot; 4670 int slot;
2938 int wd = w->wd; 4671 int wd = w->wd;
2939 4672
2940 if (wd < 0) 4673 if (wd < 0)
2941 return; 4674 return;
2942 4675
2943 w->wd = -2; 4676 w->wd = -2;
2944 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 4677 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2945 wlist_del (&fs_hash [slot].head, (WL)w); 4678 wlist_del (&fs_hash [slot].head, (WL)w);
2946 4679
2947 /* remove this watcher, if others are watching it, they will rearm */ 4680 /* remove this watcher, if others are watching it, they will rearm */
2948 inotify_rm_watch (fs_fd, wd); 4681 inotify_rm_watch (fs_fd, wd);
2949} 4682}
2950 4683
2951static void noinline 4684ecb_noinline
4685static void
2952infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4686infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2953{ 4687{
2954 if (slot < 0) 4688 if (slot < 0)
2955 /* overflow, need to check for all hash slots */ 4689 /* overflow, need to check for all hash slots */
2956 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4690 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2957 infy_wd (EV_A_ slot, wd, ev); 4691 infy_wd (EV_A_ slot, wd, ev);
2958 else 4692 else
2959 { 4693 {
2960 WL w_; 4694 WL w_;
2961 4695
2962 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 4696 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2963 { 4697 {
2964 ev_stat *w = (ev_stat *)w_; 4698 ev_stat *w = (ev_stat *)w_;
2965 w_ = w_->next; /* lets us remove this watcher and all before it */ 4699 w_ = w_->next; /* lets us remove this watcher and all before it */
2966 4700
2967 if (w->wd == wd || wd == -1) 4701 if (w->wd == wd || wd == -1)
2968 { 4702 {
2969 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 4703 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2970 { 4704 {
2971 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4705 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2972 w->wd = -1; 4706 w->wd = -1;
2973 infy_add (EV_A_ w); /* re-add, no matter what */ 4707 infy_add (EV_A_ w); /* re-add, no matter what */
2974 } 4708 }
2975 4709
2976 stat_timer_cb (EV_A_ &w->timer, 0); 4710 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2992 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4726 infy_wd (EV_A_ ev->wd, ev->wd, ev);
2993 ofs += sizeof (struct inotify_event) + ev->len; 4727 ofs += sizeof (struct inotify_event) + ev->len;
2994 } 4728 }
2995} 4729}
2996 4730
2997inline_size void 4731inline_size ecb_cold
4732void
2998check_2625 (EV_P) 4733ev_check_2625 (EV_P)
2999{ 4734{
3000 /* kernels < 2.6.25 are borked 4735 /* kernels < 2.6.25 are borked
3001 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4736 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3002 */ 4737 */
3003 struct utsname buf; 4738 if (ev_linux_version () < 0x020619)
3004 int major, minor, micro;
3005
3006 if (uname (&buf))
3007 return;
3008
3009 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
3010 return;
3011
3012 if (major < 2
3013 || (major == 2 && minor < 6)
3014 || (major == 2 && minor == 6 && micro < 25))
3015 return; 4739 return;
3016 4740
3017 fs_2625 = 1; 4741 fs_2625 = 1;
3018} 4742}
3019 4743
3020inline_size int 4744inline_size int
3021infy_newfd (void) 4745infy_newfd (void)
3022{ 4746{
3023#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4747#if defined IN_CLOEXEC && defined IN_NONBLOCK
3024 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4748 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3025 if (fd >= 0) 4749 if (fd >= 0)
3026 return fd; 4750 return fd;
3027#endif 4751#endif
3028 return inotify_init (); 4752 return inotify_init ();
… …
3034 if (fs_fd != -2) 4758 if (fs_fd != -2)
3035 return; 4759 return;
3036 4760
3037 fs_fd = -1; 4761 fs_fd = -1;
3038 4762
3039 check_2625 (EV_A); 4763 ev_check_2625 (EV_A);
3040 4764
3041 fs_fd = infy_newfd (); 4765 fs_fd = infy_newfd ();
3042 4766
3043 if (fs_fd >= 0) 4767 if (fs_fd >= 0)
3044 { 4768 {
… …
3069 ev_io_set (&fs_w, fs_fd, EV_READ); 4793 ev_io_set (&fs_w, fs_fd, EV_READ);
3070 ev_io_start (EV_A_ &fs_w); 4794 ev_io_start (EV_A_ &fs_w);
3071 ev_unref (EV_A); 4795 ev_unref (EV_A);
3072 } 4796 }
3073 4797
3074 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4798 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
3075 { 4799 {
3076 WL w_ = fs_hash [slot].head; 4800 WL w_ = fs_hash [slot].head;
3077 fs_hash [slot].head = 0; 4801 fs_hash [slot].head = 0;
3078 4802
3079 while (w_) 4803 while (w_)
… …
3103#else 4827#else
3104# define EV_LSTAT(p,b) lstat (p, b) 4828# define EV_LSTAT(p,b) lstat (p, b)
3105#endif 4829#endif
3106 4830
3107void 4831void
3108ev_stat_stat (EV_P_ ev_stat *w) 4832ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
3109{ 4833{
3110 if (lstat (w->path, &w->attr) < 0) 4834 if (lstat (w->path, &w->attr) < 0)
3111 w->attr.st_nlink = 0; 4835 w->attr.st_nlink = 0;
3112 else if (!w->attr.st_nlink) 4836 else if (!w->attr.st_nlink)
3113 w->attr.st_nlink = 1; 4837 w->attr.st_nlink = 1;
3114} 4838}
3115 4839
3116static void noinline 4840ecb_noinline
4841static void
3117stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4842stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3118{ 4843{
3119 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4844 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3120 4845
3121 ev_statdata prev = w->attr; 4846 ev_statdata prev = w->attr;
… …
3152 ev_feed_event (EV_A_ w, EV_STAT); 4877 ev_feed_event (EV_A_ w, EV_STAT);
3153 } 4878 }
3154} 4879}
3155 4880
3156void 4881void
3157ev_stat_start (EV_P_ ev_stat *w) 4882ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
3158{ 4883{
3159 if (expect_false (ev_is_active (w))) 4884 if (ecb_expect_false (ev_is_active (w)))
3160 return; 4885 return;
3161 4886
3162 ev_stat_stat (EV_A_ w); 4887 ev_stat_stat (EV_A_ w);
3163 4888
3164 if (w->interval < MIN_STAT_INTERVAL && w->interval) 4889 if (w->interval < MIN_STAT_INTERVAL && w->interval)
… …
3183 4908
3184 EV_FREQUENT_CHECK; 4909 EV_FREQUENT_CHECK;
3185} 4910}
3186 4911
3187void 4912void
3188ev_stat_stop (EV_P_ ev_stat *w) 4913ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
3189{ 4914{
3190 clear_pending (EV_A_ (W)w); 4915 clear_pending (EV_A_ (W)w);
3191 if (expect_false (!ev_is_active (w))) 4916 if (ecb_expect_false (!ev_is_active (w)))
3192 return; 4917 return;
3193 4918
3194 EV_FREQUENT_CHECK; 4919 EV_FREQUENT_CHECK;
3195 4920
3196#if EV_USE_INOTIFY 4921#if EV_USE_INOTIFY
… …
3209} 4934}
3210#endif 4935#endif
3211 4936
3212#if EV_IDLE_ENABLE 4937#if EV_IDLE_ENABLE
3213void 4938void
3214ev_idle_start (EV_P_ ev_idle *w) 4939ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
3215{ 4940{
3216 if (expect_false (ev_is_active (w))) 4941 if (ecb_expect_false (ev_is_active (w)))
3217 return; 4942 return;
3218 4943
3219 pri_adjust (EV_A_ (W)w); 4944 pri_adjust (EV_A_ (W)w);
3220 4945
3221 EV_FREQUENT_CHECK; 4946 EV_FREQUENT_CHECK;
… …
3224 int active = ++idlecnt [ABSPRI (w)]; 4949 int active = ++idlecnt [ABSPRI (w)];
3225 4950
3226 ++idleall; 4951 ++idleall;
3227 ev_start (EV_A_ (W)w, active); 4952 ev_start (EV_A_ (W)w, active);
3228 4953
3229 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 4954 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
3230 idles [ABSPRI (w)][active - 1] = w; 4955 idles [ABSPRI (w)][active - 1] = w;
3231 } 4956 }
3232 4957
3233 EV_FREQUENT_CHECK; 4958 EV_FREQUENT_CHECK;
3234} 4959}
3235 4960
3236void 4961void
3237ev_idle_stop (EV_P_ ev_idle *w) 4962ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
3238{ 4963{
3239 clear_pending (EV_A_ (W)w); 4964 clear_pending (EV_A_ (W)w);
3240 if (expect_false (!ev_is_active (w))) 4965 if (ecb_expect_false (!ev_is_active (w)))
3241 return; 4966 return;
3242 4967
3243 EV_FREQUENT_CHECK; 4968 EV_FREQUENT_CHECK;
3244 4969
3245 { 4970 {
… …
3254 4979
3255 EV_FREQUENT_CHECK; 4980 EV_FREQUENT_CHECK;
3256} 4981}
3257#endif 4982#endif
3258 4983
4984#if EV_PREPARE_ENABLE
3259void 4985void
3260ev_prepare_start (EV_P_ ev_prepare *w) 4986ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
3261{ 4987{
3262 if (expect_false (ev_is_active (w))) 4988 if (ecb_expect_false (ev_is_active (w)))
3263 return; 4989 return;
3264 4990
3265 EV_FREQUENT_CHECK; 4991 EV_FREQUENT_CHECK;
3266 4992
3267 ev_start (EV_A_ (W)w, ++preparecnt); 4993 ev_start (EV_A_ (W)w, ++preparecnt);
3268 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4994 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
3269 prepares [preparecnt - 1] = w; 4995 prepares [preparecnt - 1] = w;
3270 4996
3271 EV_FREQUENT_CHECK; 4997 EV_FREQUENT_CHECK;
3272} 4998}
3273 4999
3274void 5000void
3275ev_prepare_stop (EV_P_ ev_prepare *w) 5001ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
3276{ 5002{
3277 clear_pending (EV_A_ (W)w); 5003 clear_pending (EV_A_ (W)w);
3278 if (expect_false (!ev_is_active (w))) 5004 if (ecb_expect_false (!ev_is_active (w)))
3279 return; 5005 return;
3280 5006
3281 EV_FREQUENT_CHECK; 5007 EV_FREQUENT_CHECK;
3282 5008
3283 { 5009 {
… …
3289 5015
3290 ev_stop (EV_A_ (W)w); 5016 ev_stop (EV_A_ (W)w);
3291 5017
3292 EV_FREQUENT_CHECK; 5018 EV_FREQUENT_CHECK;
3293} 5019}
5020#endif
3294 5021
5022#if EV_CHECK_ENABLE
3295void 5023void
3296ev_check_start (EV_P_ ev_check *w) 5024ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
3297{ 5025{
3298 if (expect_false (ev_is_active (w))) 5026 if (ecb_expect_false (ev_is_active (w)))
3299 return; 5027 return;
3300 5028
3301 EV_FREQUENT_CHECK; 5029 EV_FREQUENT_CHECK;
3302 5030
3303 ev_start (EV_A_ (W)w, ++checkcnt); 5031 ev_start (EV_A_ (W)w, ++checkcnt);
3304 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 5032 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
3305 checks [checkcnt - 1] = w; 5033 checks [checkcnt - 1] = w;
3306 5034
3307 EV_FREQUENT_CHECK; 5035 EV_FREQUENT_CHECK;
3308} 5036}
3309 5037
3310void 5038void
3311ev_check_stop (EV_P_ ev_check *w) 5039ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
3312{ 5040{
3313 clear_pending (EV_A_ (W)w); 5041 clear_pending (EV_A_ (W)w);
3314 if (expect_false (!ev_is_active (w))) 5042 if (ecb_expect_false (!ev_is_active (w)))
3315 return; 5043 return;
3316 5044
3317 EV_FREQUENT_CHECK; 5045 EV_FREQUENT_CHECK;
3318 5046
3319 { 5047 {
… …
3325 5053
3326 ev_stop (EV_A_ (W)w); 5054 ev_stop (EV_A_ (W)w);
3327 5055
3328 EV_FREQUENT_CHECK; 5056 EV_FREQUENT_CHECK;
3329} 5057}
5058#endif
3330 5059
3331#if EV_EMBED_ENABLE 5060#if EV_EMBED_ENABLE
3332void noinline 5061ecb_noinline
5062void
3333ev_embed_sweep (EV_P_ ev_embed *w) 5063ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
3334{ 5064{
3335 ev_loop (w->other, EVLOOP_NONBLOCK); 5065 ev_run (w->other, EVRUN_NOWAIT);
3336} 5066}
3337 5067
3338static void 5068static void
3339embed_io_cb (EV_P_ ev_io *io, int revents) 5069embed_io_cb (EV_P_ ev_io *io, int revents)
3340{ 5070{
3341 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 5071 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3342 5072
3343 if (ev_cb (w)) 5073 if (ev_cb (w))
3344 ev_feed_event (EV_A_ (W)w, EV_EMBED); 5074 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3345 else 5075 else
3346 ev_loop (w->other, EVLOOP_NONBLOCK); 5076 ev_run (w->other, EVRUN_NOWAIT);
3347} 5077}
3348 5078
3349static void 5079static void
3350embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 5080embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3351{ 5081{
… …
3355 EV_P = w->other; 5085 EV_P = w->other;
3356 5086
3357 while (fdchangecnt) 5087 while (fdchangecnt)
3358 { 5088 {
3359 fd_reify (EV_A); 5089 fd_reify (EV_A);
3360 ev_loop (EV_A_ EVLOOP_NONBLOCK); 5090 ev_run (EV_A_ EVRUN_NOWAIT);
3361 } 5091 }
3362 } 5092 }
3363} 5093}
3364 5094
5095#if EV_FORK_ENABLE
3365static void 5096static void
3366embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) 5097embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
3367{ 5098{
3368 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 5099 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3369 5100
… …
3371 5102
3372 { 5103 {
3373 EV_P = w->other; 5104 EV_P = w->other;
3374 5105
3375 ev_loop_fork (EV_A); 5106 ev_loop_fork (EV_A);
3376 ev_loop (EV_A_ EVLOOP_NONBLOCK); 5107 ev_run (EV_A_ EVRUN_NOWAIT);
3377 } 5108 }
3378 5109
3379 ev_embed_start (EV_A_ w); 5110 ev_embed_start (EV_A_ w);
3380} 5111}
5112#endif
3381 5113
3382#if 0 5114#if 0
3383static void 5115static void
3384embed_idle_cb (EV_P_ ev_idle *idle, int revents) 5116embed_idle_cb (EV_P_ ev_idle *idle, int revents)
3385{ 5117{
3386 ev_idle_stop (EV_A_ idle); 5118 ev_idle_stop (EV_A_ idle);
3387} 5119}
3388#endif 5120#endif
3389 5121
3390void 5122void
3391ev_embed_start (EV_P_ ev_embed *w) 5123ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
3392{ 5124{
3393 if (expect_false (ev_is_active (w))) 5125 if (ecb_expect_false (ev_is_active (w)))
3394 return; 5126 return;
3395 5127
3396 { 5128 {
3397 EV_P = w->other; 5129 EV_P = w->other;
3398 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 5130 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
… …
3406 5138
3407 ev_prepare_init (&w->prepare, embed_prepare_cb); 5139 ev_prepare_init (&w->prepare, embed_prepare_cb);
3408 ev_set_priority (&w->prepare, EV_MINPRI); 5140 ev_set_priority (&w->prepare, EV_MINPRI);
3409 ev_prepare_start (EV_A_ &w->prepare); 5141 ev_prepare_start (EV_A_ &w->prepare);
3410 5142
5143#if EV_FORK_ENABLE
3411 ev_fork_init (&w->fork, embed_fork_cb); 5144 ev_fork_init (&w->fork, embed_fork_cb);
3412 ev_fork_start (EV_A_ &w->fork); 5145 ev_fork_start (EV_A_ &w->fork);
5146#endif
3413 5147
3414 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 5148 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
3415 5149
3416 ev_start (EV_A_ (W)w, 1); 5150 ev_start (EV_A_ (W)w, 1);
3417 5151
3418 EV_FREQUENT_CHECK; 5152 EV_FREQUENT_CHECK;
3419} 5153}
3420 5154
3421void 5155void
3422ev_embed_stop (EV_P_ ev_embed *w) 5156ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
3423{ 5157{
3424 clear_pending (EV_A_ (W)w); 5158 clear_pending (EV_A_ (W)w);
3425 if (expect_false (!ev_is_active (w))) 5159 if (ecb_expect_false (!ev_is_active (w)))
3426 return; 5160 return;
3427 5161
3428 EV_FREQUENT_CHECK; 5162 EV_FREQUENT_CHECK;
3429 5163
3430 ev_io_stop (EV_A_ &w->io); 5164 ev_io_stop (EV_A_ &w->io);
3431 ev_prepare_stop (EV_A_ &w->prepare); 5165 ev_prepare_stop (EV_A_ &w->prepare);
5166#if EV_FORK_ENABLE
3432 ev_fork_stop (EV_A_ &w->fork); 5167 ev_fork_stop (EV_A_ &w->fork);
5168#endif
3433 5169
3434 ev_stop (EV_A_ (W)w); 5170 ev_stop (EV_A_ (W)w);
3435 5171
3436 EV_FREQUENT_CHECK; 5172 EV_FREQUENT_CHECK;
3437} 5173}
3438#endif 5174#endif
3439 5175
3440#if EV_FORK_ENABLE 5176#if EV_FORK_ENABLE
3441void 5177void
3442ev_fork_start (EV_P_ ev_fork *w) 5178ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
3443{ 5179{
3444 if (expect_false (ev_is_active (w))) 5180 if (ecb_expect_false (ev_is_active (w)))
3445 return; 5181 return;
3446 5182
3447 EV_FREQUENT_CHECK; 5183 EV_FREQUENT_CHECK;
3448 5184
3449 ev_start (EV_A_ (W)w, ++forkcnt); 5185 ev_start (EV_A_ (W)w, ++forkcnt);
3450 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 5186 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
3451 forks [forkcnt - 1] = w; 5187 forks [forkcnt - 1] = w;
3452 5188
3453 EV_FREQUENT_CHECK; 5189 EV_FREQUENT_CHECK;
3454} 5190}
3455 5191
3456void 5192void
3457ev_fork_stop (EV_P_ ev_fork *w) 5193ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
3458{ 5194{
3459 clear_pending (EV_A_ (W)w); 5195 clear_pending (EV_A_ (W)w);
3460 if (expect_false (!ev_is_active (w))) 5196 if (ecb_expect_false (!ev_is_active (w)))
3461 return; 5197 return;
3462 5198
3463 EV_FREQUENT_CHECK; 5199 EV_FREQUENT_CHECK;
3464 5200
3465 { 5201 {
… …
3473 5209
3474 EV_FREQUENT_CHECK; 5210 EV_FREQUENT_CHECK;
3475} 5211}
3476#endif 5212#endif
3477 5213
5214#if EV_CLEANUP_ENABLE
5215void
5216ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
5217{
5218 if (ecb_expect_false (ev_is_active (w)))
5219 return;
5220
5221 EV_FREQUENT_CHECK;
5222
5223 ev_start (EV_A_ (W)w, ++cleanupcnt);
5224 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
5225 cleanups [cleanupcnt - 1] = w;
5226
5227 /* cleanup watchers should never keep a refcount on the loop */
5228 ev_unref (EV_A);
5229 EV_FREQUENT_CHECK;
5230}
5231
5232void
5233ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
5234{
5235 clear_pending (EV_A_ (W)w);
5236 if (ecb_expect_false (!ev_is_active (w)))
5237 return;
5238
5239 EV_FREQUENT_CHECK;
5240 ev_ref (EV_A);
5241
5242 {
5243 int active = ev_active (w);
5244
5245 cleanups [active - 1] = cleanups [--cleanupcnt];
5246 ev_active (cleanups [active - 1]) = active;
5247 }
5248
5249 ev_stop (EV_A_ (W)w);
5250
5251 EV_FREQUENT_CHECK;
5252}
5253#endif
5254
3478#if EV_ASYNC_ENABLE 5255#if EV_ASYNC_ENABLE
3479void 5256void
3480ev_async_start (EV_P_ ev_async *w) 5257ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
3481{ 5258{
3482 if (expect_false (ev_is_active (w))) 5259 if (ecb_expect_false (ev_is_active (w)))
3483 return; 5260 return;
3484 5261
5262 w->sent = 0;
5263
3485 evpipe_init (EV_A); 5264 evpipe_init (EV_A);
3486 5265
3487 EV_FREQUENT_CHECK; 5266 EV_FREQUENT_CHECK;
3488 5267
3489 ev_start (EV_A_ (W)w, ++asynccnt); 5268 ev_start (EV_A_ (W)w, ++asynccnt);
3490 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 5269 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
3491 asyncs [asynccnt - 1] = w; 5270 asyncs [asynccnt - 1] = w;
3492 5271
3493 EV_FREQUENT_CHECK; 5272 EV_FREQUENT_CHECK;
3494} 5273}
3495 5274
3496void 5275void
3497ev_async_stop (EV_P_ ev_async *w) 5276ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
3498{ 5277{
3499 clear_pending (EV_A_ (W)w); 5278 clear_pending (EV_A_ (W)w);
3500 if (expect_false (!ev_is_active (w))) 5279 if (ecb_expect_false (!ev_is_active (w)))
3501 return; 5280 return;
3502 5281
3503 EV_FREQUENT_CHECK; 5282 EV_FREQUENT_CHECK;
3504 5283
3505 { 5284 {
… …
3513 5292
3514 EV_FREQUENT_CHECK; 5293 EV_FREQUENT_CHECK;
3515} 5294}
3516 5295
3517void 5296void
3518ev_async_send (EV_P_ ev_async *w) 5297ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
3519{ 5298{
3520 w->sent = 1; 5299 w->sent = 1;
3521 evpipe_write (EV_A_ &async_pending); 5300 evpipe_write (EV_A_ &async_pending);
3522} 5301}
3523#endif 5302#endif
… …
3560 5339
3561 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5340 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3562} 5341}
3563 5342
3564void 5343void
3565ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 5344ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
3566{ 5345{
3567 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5346 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3568
3569 if (expect_false (!once))
3570 {
3571 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
3572 return;
3573 }
3574 5347
3575 once->cb = cb; 5348 once->cb = cb;
3576 once->arg = arg; 5349 once->arg = arg;
3577 5350
3578 ev_init (&once->io, once_cb_io); 5351 ev_init (&once->io, once_cb_io);
… …
3591} 5364}
3592 5365
3593/*****************************************************************************/ 5366/*****************************************************************************/
3594 5367
3595#if EV_WALK_ENABLE 5368#if EV_WALK_ENABLE
5369ecb_cold
3596void 5370void
3597ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 5371ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
3598{ 5372{
3599 int i, j; 5373 int i, j;
3600 ev_watcher_list *wl, *wn; 5374 ev_watcher_list *wl, *wn;
3601 5375
3602 if (types & (EV_IO | EV_EMBED)) 5376 if (types & (EV_IO | EV_EMBED))
… …
3645 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 5419 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3646#endif 5420#endif
3647 5421
3648#if EV_IDLE_ENABLE 5422#if EV_IDLE_ENABLE
3649 if (types & EV_IDLE) 5423 if (types & EV_IDLE)
3650 for (j = NUMPRI; i--; ) 5424 for (j = NUMPRI; j--; )
3651 for (i = idlecnt [j]; i--; ) 5425 for (i = idlecnt [j]; i--; )
3652 cb (EV_A_ EV_IDLE, idles [j][i]); 5426 cb (EV_A_ EV_IDLE, idles [j][i]);
3653#endif 5427#endif
3654 5428
3655#if EV_FORK_ENABLE 5429#if EV_FORK_ENABLE
… …
3663 if (types & EV_ASYNC) 5437 if (types & EV_ASYNC)
3664 for (i = asynccnt; i--; ) 5438 for (i = asynccnt; i--; )
3665 cb (EV_A_ EV_ASYNC, asyncs [i]); 5439 cb (EV_A_ EV_ASYNC, asyncs [i]);
3666#endif 5440#endif
3667 5441
5442#if EV_PREPARE_ENABLE
3668 if (types & EV_PREPARE) 5443 if (types & EV_PREPARE)
3669 for (i = preparecnt; i--; ) 5444 for (i = preparecnt; i--; )
3670#if EV_EMBED_ENABLE 5445# if EV_EMBED_ENABLE
3671 if (ev_cb (prepares [i]) != embed_prepare_cb) 5446 if (ev_cb (prepares [i]) != embed_prepare_cb)
3672#endif 5447# endif
3673 cb (EV_A_ EV_PREPARE, prepares [i]); 5448 cb (EV_A_ EV_PREPARE, prepares [i]);
5449#endif
3674 5450
5451#if EV_CHECK_ENABLE
3675 if (types & EV_CHECK) 5452 if (types & EV_CHECK)
3676 for (i = checkcnt; i--; ) 5453 for (i = checkcnt; i--; )
3677 cb (EV_A_ EV_CHECK, checks [i]); 5454 cb (EV_A_ EV_CHECK, checks [i]);
5455#endif
3678 5456
5457#if EV_SIGNAL_ENABLE
3679 if (types & EV_SIGNAL) 5458 if (types & EV_SIGNAL)
3680 for (i = 0; i < EV_NSIG - 1; ++i) 5459 for (i = 0; i < EV_NSIG - 1; ++i)
3681 for (wl = signals [i].head; wl; ) 5460 for (wl = signals [i].head; wl; )
3682 { 5461 {
3683 wn = wl->next; 5462 wn = wl->next;
3684 cb (EV_A_ EV_SIGNAL, wl); 5463 cb (EV_A_ EV_SIGNAL, wl);
3685 wl = wn; 5464 wl = wn;
3686 } 5465 }
5466#endif
3687 5467
5468#if EV_CHILD_ENABLE
3688 if (types & EV_CHILD) 5469 if (types & EV_CHILD)
3689 for (i = EV_PID_HASHSIZE; i--; ) 5470 for (i = (EV_PID_HASHSIZE); i--; )
3690 for (wl = childs [i]; wl; ) 5471 for (wl = childs [i]; wl; )
3691 { 5472 {
3692 wn = wl->next; 5473 wn = wl->next;
3693 cb (EV_A_ EV_CHILD, wl); 5474 cb (EV_A_ EV_CHILD, wl);
3694 wl = wn; 5475 wl = wn;
3695 } 5476 }
5477#endif
3696/* EV_STAT 0x00001000 /* stat data changed */ 5478/* EV_STAT 0x00001000 /* stat data changed */
3697/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 5479/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3698} 5480}
3699#endif 5481#endif
3700 5482
3701#if EV_MULTIPLICITY 5483#if EV_MULTIPLICITY
3702 #include "ev_wrap.h" 5484 #include "ev_wrap.h"
3703#endif 5485#endif
3704 5486
3705#ifdef __cplusplus
3706}
3707#endif
3708

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