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Comparing libev/ev.c (file contents):
Revision 1.323 by root, Wed Jan 13 12:44:33 2010 UTC vs.
Revision 1.536 by root, Wed Aug 10 16:50:05 2022 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007-2020 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
10 * 1. Redistributions of source code must retain the above copyright notice, 10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer. 11 * this list of conditions and the following disclaimer.
12 * 12 *
13 * 2. Redistributions in binary form must reproduce the above copyright 13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the 14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution. 15 * documentation and/or other materials provided with the distribution.
16 * 16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- 18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO 19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- 20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
… …
35 * and other provisions required by the GPL. If you do not delete the 35 * and other provisions required by the GPL. If you do not delete the
36 * provisions above, a recipient may use your version of this file under 36 * provisions above, a recipient may use your version of this file under
37 * either the BSD or the GPL. 37 * either the BSD or the GPL.
38 */ 38 */
39 39
40#ifdef __cplusplus 40#pragma clang diagnostic ignored "-Wunused-value"
41extern "C" { 41#pragma clang diagnostic ignored "-Wcomment"
42#endif 42#pragma clang diagnostic ignored "-Wextern-initializer"
43 43
44/* this big block deduces configuration from config.h */ 44/* this big block deduces configuration from config.h */
45#ifndef EV_STANDALONE 45#ifndef EV_STANDALONE
46# ifdef EV_CONFIG_H 46# ifdef EV_CONFIG_H
47# include EV_CONFIG_H 47# include EV_CONFIG_H
48# else 48# else
49# include "config.h" 49# include "config.h"
50# endif
51
52# if HAVE_FLOOR
53# ifndef EV_USE_FLOOR
54# define EV_USE_FLOOR 1
55# endif
50# endif 56# endif
51 57
52# if HAVE_CLOCK_SYSCALL 58# if HAVE_CLOCK_SYSCALL
53# ifndef EV_USE_CLOCK_SYSCALL 59# ifndef EV_USE_CLOCK_SYSCALL
54# define EV_USE_CLOCK_SYSCALL 1 60# define EV_USE_CLOCK_SYSCALL 1
… …
57# endif 63# endif
58# ifndef EV_USE_MONOTONIC 64# ifndef EV_USE_MONOTONIC
59# define EV_USE_MONOTONIC 1 65# define EV_USE_MONOTONIC 1
60# endif 66# endif
61# endif 67# endif
62# elif !defined(EV_USE_CLOCK_SYSCALL) 68# elif !defined EV_USE_CLOCK_SYSCALL
63# define EV_USE_CLOCK_SYSCALL 0 69# define EV_USE_CLOCK_SYSCALL 0
64# endif 70# endif
65 71
66# if HAVE_CLOCK_GETTIME 72# if HAVE_CLOCK_GETTIME
67# ifndef EV_USE_MONOTONIC 73# ifndef EV_USE_MONOTONIC
… …
77# ifndef EV_USE_REALTIME 83# ifndef EV_USE_REALTIME
78# define EV_USE_REALTIME 0 84# define EV_USE_REALTIME 0
79# endif 85# endif
80# endif 86# endif
81 87
88# if HAVE_NANOSLEEP
82# ifndef EV_USE_NANOSLEEP 89# ifndef EV_USE_NANOSLEEP
83# if HAVE_NANOSLEEP
84# define EV_USE_NANOSLEEP 1 90# define EV_USE_NANOSLEEP EV_FEATURE_OS
91# endif
85# else 92# else
93# undef EV_USE_NANOSLEEP
86# define EV_USE_NANOSLEEP 0 94# define EV_USE_NANOSLEEP 0
95# endif
96
97# if HAVE_SELECT && HAVE_SYS_SELECT_H
98# ifndef EV_USE_SELECT
99# define EV_USE_SELECT EV_FEATURE_BACKENDS
87# endif 100# endif
101# else
102# undef EV_USE_SELECT
103# define EV_USE_SELECT 0
88# endif 104# endif
89 105
106# if HAVE_POLL && HAVE_POLL_H
90# ifndef EV_USE_SELECT 107# ifndef EV_USE_POLL
91# if HAVE_SELECT && HAVE_SYS_SELECT_H 108# define EV_USE_POLL EV_FEATURE_BACKENDS
92# define EV_USE_SELECT 1
93# else
94# define EV_USE_SELECT 0
95# endif 109# endif
96# endif
97
98# ifndef EV_USE_POLL
99# if HAVE_POLL && HAVE_POLL_H
100# define EV_USE_POLL 1
101# else 110# else
111# undef EV_USE_POLL
102# define EV_USE_POLL 0 112# define EV_USE_POLL 0
103# endif
104# endif 113# endif
105 114
106# ifndef EV_USE_EPOLL
107# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 115# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
108# define EV_USE_EPOLL 1 116# ifndef EV_USE_EPOLL
109# else 117# define EV_USE_EPOLL EV_FEATURE_BACKENDS
110# define EV_USE_EPOLL 0
111# endif 118# endif
119# else
120# undef EV_USE_EPOLL
121# define EV_USE_EPOLL 0
112# endif 122# endif
113 123
114# ifndef EV_USE_KQUEUE 124# if HAVE_LINUX_AIO_ABI_H
115# if HAVE_KQUEUE && HAVE_SYS_EVENT_H 125# ifndef EV_USE_LINUXAIO
116# define EV_USE_KQUEUE 1 126# define EV_USE_LINUXAIO 0 /* was: EV_FEATURE_BACKENDS, always off by default */
117# else
118# define EV_USE_KQUEUE 0
119# endif 127# endif
128# else
129# undef EV_USE_LINUXAIO
130# define EV_USE_LINUXAIO 0
120# endif 131# endif
121 132
133# if HAVE_LINUX_FS_H && HAVE_SYS_TIMERFD_H && HAVE_KERNEL_RWF_T
122# ifndef EV_USE_PORT 134# ifndef EV_USE_IOURING
123# if HAVE_PORT_H && HAVE_PORT_CREATE 135# define EV_USE_IOURING EV_FEATURE_BACKENDS
124# define EV_USE_PORT 1
125# else
126# define EV_USE_PORT 0
127# endif 136# endif
128# endif
129
130# ifndef EV_USE_INOTIFY
131# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
132# define EV_USE_INOTIFY 1
133# else 137# else
138# undef EV_USE_IOURING
134# define EV_USE_INOTIFY 0 139# define EV_USE_IOURING 0
135# endif
136# endif
137
138# ifndef EV_USE_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 140# endif
153 141
142# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
143# ifndef EV_USE_KQUEUE
144# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
145# endif
146# else
147# undef EV_USE_KQUEUE
148# define EV_USE_KQUEUE 0
154#endif 149# endif
150
151# if HAVE_PORT_H && HAVE_PORT_CREATE
152# ifndef EV_USE_PORT
153# define EV_USE_PORT EV_FEATURE_BACKENDS
154# endif
155# else
156# undef EV_USE_PORT
157# define EV_USE_PORT 0
158# endif
155 159
156#include <math.h> 160# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
161# ifndef EV_USE_INOTIFY
162# define EV_USE_INOTIFY EV_FEATURE_OS
163# endif
164# else
165# undef EV_USE_INOTIFY
166# define EV_USE_INOTIFY 0
167# endif
168
169# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
170# ifndef EV_USE_SIGNALFD
171# define EV_USE_SIGNALFD EV_FEATURE_OS
172# endif
173# else
174# undef EV_USE_SIGNALFD
175# define EV_USE_SIGNALFD 0
176# endif
177
178# if HAVE_EVENTFD
179# ifndef EV_USE_EVENTFD
180# define EV_USE_EVENTFD EV_FEATURE_OS
181# endif
182# else
183# undef EV_USE_EVENTFD
184# define EV_USE_EVENTFD 0
185# endif
186
187# if HAVE_SYS_TIMERFD_H
188# ifndef EV_USE_TIMERFD
189# define EV_USE_TIMERFD EV_FEATURE_OS
190# endif
191# else
192# undef EV_USE_TIMERFD
193# define EV_USE_TIMERFD 0
194# endif
195
196#endif
197
198/* OS X, in its infinite idiocy, actually HARDCODES
199 * a limit of 1024 into their select. Where people have brains,
200 * OS X engineers apparently have a vacuum. Or maybe they were
201 * ordered to have a vacuum, or they do anything for money.
202 * This might help. Or not.
203 * Note that this must be defined early, as other include files
204 * will rely on this define as well.
205 */
206#define _DARWIN_UNLIMITED_SELECT 1
207
157#include <stdlib.h> 208#include <stdlib.h>
158#include <string.h> 209#include <string.h>
159#include <fcntl.h> 210#include <fcntl.h>
160#include <stddef.h> 211#include <stddef.h>
161 212
… …
163 214
164#include <assert.h> 215#include <assert.h>
165#include <errno.h> 216#include <errno.h>
166#include <sys/types.h> 217#include <sys/types.h>
167#include <time.h> 218#include <time.h>
219#include <limits.h>
168 220
169#include <signal.h> 221#include <signal.h>
170 222
171#ifdef EV_H 223#ifdef EV_H
172# include EV_H 224# include EV_H
173#else 225#else
174# include "ev.h" 226# include "ev.h"
227#endif
228
229#if EV_NO_THREADS
230# undef EV_NO_SMP
231# define EV_NO_SMP 1
232# undef ECB_NO_THREADS
233# define ECB_NO_THREADS 1
234#endif
235#if EV_NO_SMP
236# undef EV_NO_SMP
237# define ECB_NO_SMP 1
175#endif 238#endif
176 239
177#ifndef _WIN32 240#ifndef _WIN32
178# include <sys/time.h> 241# include <sys/time.h>
179# include <sys/wait.h> 242# include <sys/wait.h>
180# include <unistd.h> 243# include <unistd.h>
181#else 244#else
182# include <io.h> 245# include <io.h>
183# define WIN32_LEAN_AND_MEAN 246# define WIN32_LEAN_AND_MEAN
247# include <winsock2.h>
184# include <windows.h> 248# include <windows.h>
185# ifndef EV_SELECT_IS_WINSOCKET 249# ifndef EV_SELECT_IS_WINSOCKET
186# define EV_SELECT_IS_WINSOCKET 1 250# define EV_SELECT_IS_WINSOCKET 1
187# endif 251# endif
252# undef EV_AVOID_STDIO
188#endif 253#endif
189 254
190/* this block tries to deduce configuration from header-defined symbols and defaults */ 255/* this block tries to deduce configuration from header-defined symbols and defaults */
191 256
192/* try to deduce the maximum number of signals on this platform */ 257/* try to deduce the maximum number of signals on this platform */
193#if defined (EV_NSIG) 258#if defined EV_NSIG
194/* use what's provided */ 259/* use what's provided */
195#elif defined (NSIG) 260#elif defined NSIG
196# define EV_NSIG (NSIG) 261# define EV_NSIG (NSIG)
197#elif defined(_NSIG) 262#elif defined _NSIG
198# define EV_NSIG (_NSIG) 263# define EV_NSIG (_NSIG)
199#elif defined (SIGMAX) 264#elif defined SIGMAX
200# define EV_NSIG (SIGMAX+1) 265# define EV_NSIG (SIGMAX+1)
201#elif defined (SIG_MAX) 266#elif defined SIG_MAX
202# define EV_NSIG (SIG_MAX+1) 267# define EV_NSIG (SIG_MAX+1)
203#elif defined (_SIG_MAX) 268#elif defined _SIG_MAX
204# define EV_NSIG (_SIG_MAX+1) 269# define EV_NSIG (_SIG_MAX+1)
205#elif defined (MAXSIG) 270#elif defined MAXSIG
206# define EV_NSIG (MAXSIG+1) 271# define EV_NSIG (MAXSIG+1)
207#elif defined (MAX_SIG) 272#elif defined MAX_SIG
208# define EV_NSIG (MAX_SIG+1) 273# define EV_NSIG (MAX_SIG+1)
209#elif defined (SIGARRAYSIZE) 274#elif defined SIGARRAYSIZE
210# define EV_NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */ 275# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
211#elif defined (_sys_nsig) 276#elif defined _sys_nsig
212# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 277# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
213#else 278#else
214# error "unable to find value for NSIG, please report" 279# define EV_NSIG (8 * sizeof (sigset_t) + 1)
215/* to make it compile regardless, just remove the above line */ 280#endif
216# define EV_NSIG 65 281
282#ifndef EV_USE_FLOOR
283# define EV_USE_FLOOR 0
217#endif 284#endif
218 285
219#ifndef EV_USE_CLOCK_SYSCALL 286#ifndef EV_USE_CLOCK_SYSCALL
220# if __linux && __GLIBC__ >= 2 287# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
221# define EV_USE_CLOCK_SYSCALL 1 288# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
222# else 289# else
223# define EV_USE_CLOCK_SYSCALL 0 290# define EV_USE_CLOCK_SYSCALL 0
224# endif 291# endif
225#endif 292#endif
226 293
294#if !(_POSIX_TIMERS > 0)
295# ifndef EV_USE_MONOTONIC
296# define EV_USE_MONOTONIC 0
297# endif
298# ifndef EV_USE_REALTIME
299# define EV_USE_REALTIME 0
300# endif
301#endif
302
227#ifndef EV_USE_MONOTONIC 303#ifndef EV_USE_MONOTONIC
228# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 304# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
229# define EV_USE_MONOTONIC 1 305# define EV_USE_MONOTONIC EV_FEATURE_OS
230# else 306# else
231# define EV_USE_MONOTONIC 0 307# define EV_USE_MONOTONIC 0
232# endif 308# endif
233#endif 309#endif
234 310
… …
236# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 312# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
237#endif 313#endif
238 314
239#ifndef EV_USE_NANOSLEEP 315#ifndef EV_USE_NANOSLEEP
240# if _POSIX_C_SOURCE >= 199309L 316# if _POSIX_C_SOURCE >= 199309L
241# define EV_USE_NANOSLEEP 1 317# define EV_USE_NANOSLEEP EV_FEATURE_OS
242# else 318# else
243# define EV_USE_NANOSLEEP 0 319# define EV_USE_NANOSLEEP 0
244# endif 320# endif
245#endif 321#endif
246 322
247#ifndef EV_USE_SELECT 323#ifndef EV_USE_SELECT
248# define EV_USE_SELECT 1 324# define EV_USE_SELECT EV_FEATURE_BACKENDS
249#endif 325#endif
250 326
251#ifndef EV_USE_POLL 327#ifndef EV_USE_POLL
252# ifdef _WIN32 328# ifdef _WIN32
253# define EV_USE_POLL 0 329# define EV_USE_POLL 0
254# else 330# else
255# define EV_USE_POLL 1 331# define EV_USE_POLL EV_FEATURE_BACKENDS
256# endif 332# endif
257#endif 333#endif
258 334
259#ifndef EV_USE_EPOLL 335#ifndef EV_USE_EPOLL
260# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 336# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
261# define EV_USE_EPOLL 1 337# define EV_USE_EPOLL EV_FEATURE_BACKENDS
262# else 338# else
263# define EV_USE_EPOLL 0 339# define EV_USE_EPOLL 0
264# endif 340# endif
265#endif 341#endif
266 342
… …
270 346
271#ifndef EV_USE_PORT 347#ifndef EV_USE_PORT
272# define EV_USE_PORT 0 348# define EV_USE_PORT 0
273#endif 349#endif
274 350
351#ifndef EV_USE_LINUXAIO
352# if __linux /* libev currently assumes linux/aio_abi.h is always available on linux */
353# define EV_USE_LINUXAIO 0 /* was: 1, always off by default */
354# else
355# define EV_USE_LINUXAIO 0
356# endif
357#endif
358
359#ifndef EV_USE_IOURING
360# if __linux /* later checks might disable again */
361# define EV_USE_IOURING 1
362# else
363# define EV_USE_IOURING 0
364# endif
365#endif
366
275#ifndef EV_USE_INOTIFY 367#ifndef EV_USE_INOTIFY
276# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 368# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
277# define EV_USE_INOTIFY 1 369# define EV_USE_INOTIFY EV_FEATURE_OS
278# else 370# else
279# define EV_USE_INOTIFY 0 371# define EV_USE_INOTIFY 0
280# endif 372# endif
281#endif 373#endif
282 374
283#ifndef EV_PID_HASHSIZE 375#ifndef EV_PID_HASHSIZE
284# if EV_MINIMAL 376# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
285# define EV_PID_HASHSIZE 1
286# else
287# define EV_PID_HASHSIZE 16
288# endif
289#endif 377#endif
290 378
291#ifndef EV_INOTIFY_HASHSIZE 379#ifndef EV_INOTIFY_HASHSIZE
292# if EV_MINIMAL 380# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
293# define EV_INOTIFY_HASHSIZE 1
294# else
295# define EV_INOTIFY_HASHSIZE 16
296# endif
297#endif 381#endif
298 382
299#ifndef EV_USE_EVENTFD 383#ifndef EV_USE_EVENTFD
300# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 384# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
301# define EV_USE_EVENTFD 1 385# define EV_USE_EVENTFD EV_FEATURE_OS
302# else 386# else
303# define EV_USE_EVENTFD 0 387# define EV_USE_EVENTFD 0
304# endif 388# endif
305#endif 389#endif
306 390
307#ifndef EV_USE_SIGNALFD 391#ifndef EV_USE_SIGNALFD
308# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 392# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
309# define EV_USE_SIGNALFD 1 393# define EV_USE_SIGNALFD EV_FEATURE_OS
310# else 394# else
311# define EV_USE_SIGNALFD 0 395# define EV_USE_SIGNALFD 0
396# endif
397#endif
398
399#ifndef EV_USE_TIMERFD
400# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 8))
401# define EV_USE_TIMERFD EV_FEATURE_OS
402# else
403# define EV_USE_TIMERFD 0
312# endif 404# endif
313#endif 405#endif
314 406
315#if 0 /* debugging */ 407#if 0 /* debugging */
316# define EV_VERIFY 3 408# define EV_VERIFY 3
317# define EV_USE_4HEAP 1 409# define EV_USE_4HEAP 1
318# define EV_HEAP_CACHE_AT 1 410# define EV_HEAP_CACHE_AT 1
319#endif 411#endif
320 412
321#ifndef EV_VERIFY 413#ifndef EV_VERIFY
322# define EV_VERIFY !EV_MINIMAL 414# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
323#endif 415#endif
324 416
325#ifndef EV_USE_4HEAP 417#ifndef EV_USE_4HEAP
326# define EV_USE_4HEAP !EV_MINIMAL 418# define EV_USE_4HEAP EV_FEATURE_DATA
327#endif 419#endif
328 420
329#ifndef EV_HEAP_CACHE_AT 421#ifndef EV_HEAP_CACHE_AT
330# define EV_HEAP_CACHE_AT !EV_MINIMAL 422# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
423#endif
424
425#ifdef __ANDROID__
426/* supposedly, android doesn't typedef fd_mask */
427# undef EV_USE_SELECT
428# define EV_USE_SELECT 0
429/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
430# undef EV_USE_CLOCK_SYSCALL
431# define EV_USE_CLOCK_SYSCALL 0
432#endif
433
434/* aix's poll.h seems to cause lots of trouble */
435#ifdef _AIX
436/* AIX has a completely broken poll.h header */
437# undef EV_USE_POLL
438# define EV_USE_POLL 0
331#endif 439#endif
332 440
333/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 441/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
334/* which makes programs even slower. might work on other unices, too. */ 442/* which makes programs even slower. might work on other unices, too. */
335#if EV_USE_CLOCK_SYSCALL 443#if EV_USE_CLOCK_SYSCALL
336# include <syscall.h> 444# include <sys/syscall.h>
337# ifdef SYS_clock_gettime 445# ifdef SYS_clock_gettime
338# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 446# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
339# undef EV_USE_MONOTONIC 447# undef EV_USE_MONOTONIC
340# define EV_USE_MONOTONIC 1 448# define EV_USE_MONOTONIC 1
449# define EV_NEED_SYSCALL 1
341# else 450# else
342# undef EV_USE_CLOCK_SYSCALL 451# undef EV_USE_CLOCK_SYSCALL
343# define EV_USE_CLOCK_SYSCALL 0 452# define EV_USE_CLOCK_SYSCALL 0
344# endif 453# endif
345#endif 454#endif
… …
359#if !EV_STAT_ENABLE 468#if !EV_STAT_ENABLE
360# undef EV_USE_INOTIFY 469# undef EV_USE_INOTIFY
361# define EV_USE_INOTIFY 0 470# define EV_USE_INOTIFY 0
362#endif 471#endif
363 472
473#if __linux && EV_USE_IOURING
474# include <linux/version.h>
475# if LINUX_VERSION_CODE < KERNEL_VERSION(4,14,0)
476# undef EV_USE_IOURING
477# define EV_USE_IOURING 0
478# endif
479#endif
480
364#if !EV_USE_NANOSLEEP 481#if !EV_USE_NANOSLEEP
365# ifndef _WIN32 482/* hp-ux has it in sys/time.h, which we unconditionally include above */
483# if !defined _WIN32 && !defined __hpux
366# include <sys/select.h> 484# include <sys/select.h>
367# endif 485# endif
368#endif 486#endif
369 487
488#if EV_USE_LINUXAIO
489# include <sys/syscall.h>
490# if SYS_io_getevents && EV_USE_EPOLL /* linuxaio backend requires epoll backend */
491# define EV_NEED_SYSCALL 1
492# else
493# undef EV_USE_LINUXAIO
494# define EV_USE_LINUXAIO 0
495# endif
496#endif
497
498#if EV_USE_IOURING
499# include <sys/syscall.h>
500# if !SYS_io_uring_register && __linux && !__alpha
501# define SYS_io_uring_setup 425
502# define SYS_io_uring_enter 426
503# define SYS_io_uring_register 427
504# endif
505# if SYS_io_uring_setup && EV_USE_EPOLL /* iouring backend requires epoll backend */
506# define EV_NEED_SYSCALL 1
507# else
508# undef EV_USE_IOURING
509# define EV_USE_IOURING 0
510# endif
511#endif
512
370#if EV_USE_INOTIFY 513#if EV_USE_INOTIFY
371# include <sys/utsname.h>
372# include <sys/statfs.h> 514# include <sys/statfs.h>
373# include <sys/inotify.h> 515# include <sys/inotify.h>
374/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 516/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
375# ifndef IN_DONT_FOLLOW 517# ifndef IN_DONT_FOLLOW
376# undef EV_USE_INOTIFY 518# undef EV_USE_INOTIFY
377# define EV_USE_INOTIFY 0 519# define EV_USE_INOTIFY 0
378# endif 520# endif
379#endif 521#endif
380 522
381#if EV_SELECT_IS_WINSOCKET
382# include <winsock.h>
383#endif
384
385#if EV_USE_EVENTFD 523#if EV_USE_EVENTFD
386/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 524/* our minimum requirement is glibc 2.7 which has the stub, but not the full header */
387# include <stdint.h> 525# include <stdint.h>
388# ifndef EFD_NONBLOCK 526# ifndef EFD_NONBLOCK
389# define EFD_NONBLOCK O_NONBLOCK 527# define EFD_NONBLOCK O_NONBLOCK
390# endif 528# endif
391# ifndef EFD_CLOEXEC 529# ifndef EFD_CLOEXEC
… …
393# define EFD_CLOEXEC O_CLOEXEC 531# define EFD_CLOEXEC O_CLOEXEC
394# else 532# else
395# define EFD_CLOEXEC 02000000 533# define EFD_CLOEXEC 02000000
396# endif 534# endif
397# endif 535# endif
398# ifdef __cplusplus
399extern "C" {
400# endif
401int eventfd (unsigned int initval, int flags); 536EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
402# ifdef __cplusplus
403}
404# endif
405#endif 537#endif
406 538
407#if EV_USE_SIGNALFD 539#if EV_USE_SIGNALFD
408/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 540/* our minimum requirement is glibc 2.7 which has the stub, but not the full header */
409# include <stdint.h> 541# include <stdint.h>
410# ifndef SFD_NONBLOCK 542# ifndef SFD_NONBLOCK
411# define SFD_NONBLOCK O_NONBLOCK 543# define SFD_NONBLOCK O_NONBLOCK
412# endif 544# endif
413# ifndef SFD_CLOEXEC 545# ifndef SFD_CLOEXEC
… …
415# define SFD_CLOEXEC O_CLOEXEC 547# define SFD_CLOEXEC O_CLOEXEC
416# else 548# else
417# define SFD_CLOEXEC 02000000 549# define SFD_CLOEXEC 02000000
418# endif 550# endif
419# endif 551# endif
420# ifdef __cplusplus
421extern "C" {
422# endif
423int signalfd (int fd, const sigset_t *mask, int flags); 552EV_CPP (extern "C") int (signalfd) (int fd, const sigset_t *mask, int flags);
424 553
425struct signalfd_siginfo 554struct signalfd_siginfo
426{ 555{
427 uint32_t ssi_signo; 556 uint32_t ssi_signo;
428 char pad[128 - sizeof (uint32_t)]; 557 char pad[128 - sizeof (uint32_t)];
429}; 558};
430# ifdef __cplusplus 559#endif
431} 560
561/* for timerfd, libev core requires TFD_TIMER_CANCEL_ON_SET &c */
562#if EV_USE_TIMERFD
563# include <sys/timerfd.h>
564/* timerfd is only used for periodics */
565# if !(defined (TFD_TIMER_CANCEL_ON_SET) && defined (TFD_CLOEXEC) && defined (TFD_NONBLOCK)) || !EV_PERIODIC_ENABLE
566# undef EV_USE_TIMERFD
567# define EV_USE_TIMERFD 0
432# endif 568# endif
433#endif 569#endif
434 570
435 571/*****************************************************************************/
436/**/
437 572
438#if EV_VERIFY >= 3 573#if EV_VERIFY >= 3
439# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 574# define EV_FREQUENT_CHECK ev_verify (EV_A)
440#else 575#else
441# define EV_FREQUENT_CHECK do { } while (0) 576# define EV_FREQUENT_CHECK do { } while (0)
442#endif 577#endif
443 578
444/* 579/*
445 * This is used to avoid floating point rounding problems. 580 * This is used to work around floating point rounding problems.
446 * It is added to ev_rt_now when scheduling periodics
447 * to ensure progress, time-wise, even when rounding
448 * errors are against us.
449 * This value is good at least till the year 4000. 581 * This value is good at least till the year 4000.
450 * Better solutions welcome.
451 */ 582 */
452#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 583#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
584/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
453 585
454#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 586#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
455#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 587#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
588#define MAX_BLOCKTIME2 1500001.07 /* same, but when timerfd is used to detect jumps, also safe delay to not overflow */
456 589
590/* find a portable timestamp that is "always" in the future but fits into time_t.
591 * this is quite hard, and we are mostly guessing - we handle 32 bit signed/unsigned time_t,
592 * and sizes larger than 32 bit, and maybe the unlikely floating point time_t */
593#define EV_TSTAMP_HUGE \
594 (sizeof (time_t) >= 8 ? 10000000000000. \
595 : 0 < (time_t)4294967295 ? 4294967295. \
596 : 2147483647.) \
597
598#ifndef EV_TS_CONST
599# define EV_TS_CONST(nv) nv
600# define EV_TS_TO_MSEC(a) a * 1e3 + 0.9999
601# define EV_TS_FROM_USEC(us) us * 1e-6
602# define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
603# define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
604# define EV_TV_GET(tv) ((tv).tv_sec + (tv).tv_usec * 1e-6)
605# define EV_TS_GET(ts) ((ts).tv_sec + (ts).tv_nsec * 1e-9)
606#endif
607
608/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
609/* ECB.H BEGIN */
610/*
611 * libecb - http://software.schmorp.de/pkg/libecb
612 *
613 * Copyright (©) 2009-2015,2018-2020 Marc Alexander Lehmann <libecb@schmorp.de>
614 * Copyright (©) 2011 Emanuele Giaquinta
615 * All rights reserved.
616 *
617 * Redistribution and use in source and binary forms, with or without modifica-
618 * tion, are permitted provided that the following conditions are met:
619 *
620 * 1. Redistributions of source code must retain the above copyright notice,
621 * this list of conditions and the following disclaimer.
622 *
623 * 2. Redistributions in binary form must reproduce the above copyright
624 * notice, this list of conditions and the following disclaimer in the
625 * documentation and/or other materials provided with the distribution.
626 *
627 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
628 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
629 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
630 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
631 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
632 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
633 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
634 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
635 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
636 * OF THE POSSIBILITY OF SUCH DAMAGE.
637 *
638 * Alternatively, the contents of this file may be used under the terms of
639 * the GNU General Public License ("GPL") version 2 or any later version,
640 * in which case the provisions of the GPL are applicable instead of
641 * the above. If you wish to allow the use of your version of this file
642 * only under the terms of the GPL and not to allow others to use your
643 * version of this file under the BSD license, indicate your decision
644 * by deleting the provisions above and replace them with the notice
645 * and other provisions required by the GPL. If you do not delete the
646 * provisions above, a recipient may use your version of this file under
647 * either the BSD or the GPL.
648 */
649
650#ifndef ECB_H
651#define ECB_H
652
653/* 16 bits major, 16 bits minor */
654#define ECB_VERSION 0x00010008
655
656#include <string.h> /* for memcpy */
657
658#if defined (_WIN32) && !defined (__MINGW32__)
659 typedef signed char int8_t;
660 typedef unsigned char uint8_t;
661 typedef signed char int_fast8_t;
662 typedef unsigned char uint_fast8_t;
663 typedef signed short int16_t;
664 typedef unsigned short uint16_t;
665 typedef signed int int_fast16_t;
666 typedef unsigned int uint_fast16_t;
667 typedef signed int int32_t;
668 typedef unsigned int uint32_t;
669 typedef signed int int_fast32_t;
670 typedef unsigned int uint_fast32_t;
457#if __GNUC__ >= 4 671 #if __GNUC__
458# define expect(expr,value) __builtin_expect ((expr),(value)) 672 typedef signed long long int64_t;
459# define noinline __attribute__ ((noinline)) 673 typedef unsigned long long uint64_t;
674 #else /* _MSC_VER || __BORLANDC__ */
675 typedef signed __int64 int64_t;
676 typedef unsigned __int64 uint64_t;
677 #endif
678 typedef int64_t int_fast64_t;
679 typedef uint64_t uint_fast64_t;
680 #ifdef _WIN64
681 #define ECB_PTRSIZE 8
682 typedef uint64_t uintptr_t;
683 typedef int64_t intptr_t;
684 #else
685 #define ECB_PTRSIZE 4
686 typedef uint32_t uintptr_t;
687 typedef int32_t intptr_t;
688 #endif
460#else 689#else
461# define expect(expr,value) (expr) 690 #include <inttypes.h>
462# define noinline 691 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
463# if __STDC_VERSION__ < 199901L && __GNUC__ < 2 692 #define ECB_PTRSIZE 8
464# define inline 693 #else
694 #define ECB_PTRSIZE 4
695 #endif
465# endif 696#endif
697
698#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
699#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
700
701#ifndef ECB_OPTIMIZE_SIZE
702 #if __OPTIMIZE_SIZE__
703 #define ECB_OPTIMIZE_SIZE 1
704 #else
705 #define ECB_OPTIMIZE_SIZE 0
466#endif 706 #endif
707#endif
467 708
468#define expect_false(expr) expect ((expr) != 0, 0) 709/* work around x32 idiocy by defining proper macros */
469#define expect_true(expr) expect ((expr) != 0, 1) 710#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
470#define inline_size static inline 711 #if _ILP32
712 #define ECB_AMD64_X32 1
713 #else
714 #define ECB_AMD64 1
715 #endif
716#endif
471 717
472#if EV_MINIMAL 718/* many compilers define _GNUC_ to some versions but then only implement
473# define inline_speed static noinline 719 * what their idiot authors think are the "more important" extensions,
720 * causing enormous grief in return for some better fake benchmark numbers.
721 * or so.
722 * we try to detect these and simply assume they are not gcc - if they have
723 * an issue with that they should have done it right in the first place.
724 */
725#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
726 #define ECB_GCC_VERSION(major,minor) 0
474#else 727#else
728 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
729#endif
730
731#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
732
733#if __clang__ && defined __has_builtin
734 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
735#else
736 #define ECB_CLANG_BUILTIN(x) 0
737#endif
738
739#if __clang__ && defined __has_extension
740 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
741#else
742 #define ECB_CLANG_EXTENSION(x) 0
743#endif
744
745#define ECB_CPP (__cplusplus+0)
746#define ECB_CPP11 (__cplusplus >= 201103L)
747#define ECB_CPP14 (__cplusplus >= 201402L)
748#define ECB_CPP17 (__cplusplus >= 201703L)
749
750#if ECB_CPP
751 #define ECB_C 0
752 #define ECB_STDC_VERSION 0
753#else
754 #define ECB_C 1
755 #define ECB_STDC_VERSION __STDC_VERSION__
756#endif
757
758#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
759#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
760#define ECB_C17 (ECB_STDC_VERSION >= 201710L)
761
762#if ECB_CPP
763 #define ECB_EXTERN_C extern "C"
764 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
765 #define ECB_EXTERN_C_END }
766#else
767 #define ECB_EXTERN_C extern
768 #define ECB_EXTERN_C_BEG
769 #define ECB_EXTERN_C_END
770#endif
771
772/*****************************************************************************/
773
774/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
775/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
776
777#if ECB_NO_THREADS
778 #define ECB_NO_SMP 1
779#endif
780
781#if ECB_NO_SMP
782 #define ECB_MEMORY_FENCE do { } while (0)
783#endif
784
785/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
786#if __xlC__ && ECB_CPP
787 #include <builtins.h>
788#endif
789
790#if 1400 <= _MSC_VER
791 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
792#endif
793
794#ifndef ECB_MEMORY_FENCE
795 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
796 #define ECB_MEMORY_FENCE_RELAXED __asm__ __volatile__ ("" : : : "memory")
797 #if __i386 || __i386__
798 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
799 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
800 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
801 #elif ECB_GCC_AMD64
802 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
803 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
804 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
805 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
806 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
807 #elif defined __ARM_ARCH_2__ \
808 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
809 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
810 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
811 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
812 || defined __ARM_ARCH_5TEJ__
813 /* should not need any, unless running old code on newer cpu - arm doesn't support that */
814 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
815 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
816 || defined __ARM_ARCH_6T2__
817 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
818 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
819 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
820 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
821 #elif __aarch64__
822 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
823 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
824 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
825 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
826 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
827 #elif defined __s390__ || defined __s390x__
828 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
829 #elif defined __mips__
830 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
831 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
832 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
833 #elif defined __alpha__
834 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
835 #elif defined __hppa__
836 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
837 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
838 #elif defined __ia64__
839 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
840 #elif defined __m68k__
841 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
842 #elif defined __m88k__
843 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
844 #elif defined __sh__
845 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
846 #endif
847 #endif
848#endif
849
850#ifndef ECB_MEMORY_FENCE
851 #if ECB_GCC_VERSION(4,7)
852 /* see comment below (stdatomic.h) about the C11 memory model. */
853 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
854 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
855 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
856 #define ECB_MEMORY_FENCE_RELAXED __atomic_thread_fence (__ATOMIC_RELAXED)
857
858 #elif ECB_CLANG_EXTENSION(c_atomic)
859 /* see comment below (stdatomic.h) about the C11 memory model. */
860 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
861 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
862 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
863 #define ECB_MEMORY_FENCE_RELAXED __c11_atomic_thread_fence (__ATOMIC_RELAXED)
864
865 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
866 #define ECB_MEMORY_FENCE __sync_synchronize ()
867 #elif _MSC_VER >= 1500 /* VC++ 2008 */
868 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
869 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
870 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
871 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
872 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
873 #elif _MSC_VER >= 1400 /* VC++ 2005 */
874 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
875 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
876 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
877 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
878 #elif defined _WIN32
879 #include <WinNT.h>
880 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
881 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
882 #include <mbarrier.h>
883 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
884 #define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier ()
885 #define ECB_MEMORY_FENCE_RELEASE __machine_rel_barrier ()
886 #define ECB_MEMORY_FENCE_RELAXED __compiler_barrier ()
887 #elif __xlC__
888 #define ECB_MEMORY_FENCE __sync ()
889 #endif
890#endif
891
892#ifndef ECB_MEMORY_FENCE
893 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
894 /* we assume that these memory fences work on all variables/all memory accesses, */
895 /* not just C11 atomics and atomic accesses */
896 #include <stdatomic.h>
897 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
898 #define ECB_MEMORY_FENCE_ACQUIRE atomic_thread_fence (memory_order_acquire)
899 #define ECB_MEMORY_FENCE_RELEASE atomic_thread_fence (memory_order_release)
900 #endif
901#endif
902
903#ifndef ECB_MEMORY_FENCE
904 #if !ECB_AVOID_PTHREADS
905 /*
906 * if you get undefined symbol references to pthread_mutex_lock,
907 * or failure to find pthread.h, then you should implement
908 * the ECB_MEMORY_FENCE operations for your cpu/compiler
909 * OR provide pthread.h and link against the posix thread library
910 * of your system.
911 */
912 #include <pthread.h>
913 #define ECB_NEEDS_PTHREADS 1
914 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
915
916 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
917 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
918 #endif
919#endif
920
921#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
922 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
923#endif
924
925#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
926 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
927#endif
928
929#if !defined ECB_MEMORY_FENCE_RELAXED && defined ECB_MEMORY_FENCE
930 #define ECB_MEMORY_FENCE_RELAXED ECB_MEMORY_FENCE /* very heavy-handed */
931#endif
932
933/*****************************************************************************/
934
935#if ECB_CPP
936 #define ecb_inline static inline
937#elif ECB_GCC_VERSION(2,5)
938 #define ecb_inline static __inline__
939#elif ECB_C99
940 #define ecb_inline static inline
941#else
942 #define ecb_inline static
943#endif
944
945#if ECB_GCC_VERSION(3,3)
946 #define ecb_restrict __restrict__
947#elif ECB_C99
948 #define ecb_restrict restrict
949#else
950 #define ecb_restrict
951#endif
952
953typedef int ecb_bool;
954
955#define ECB_CONCAT_(a, b) a ## b
956#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
957#define ECB_STRINGIFY_(a) # a
958#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
959#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
960
961#define ecb_function_ ecb_inline
962
963#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
964 #define ecb_attribute(attrlist) __attribute__ (attrlist)
965#else
966 #define ecb_attribute(attrlist)
967#endif
968
969#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
970 #define ecb_is_constant(expr) __builtin_constant_p (expr)
971#else
972 /* possible C11 impl for integral types
973 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
974 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
975
976 #define ecb_is_constant(expr) 0
977#endif
978
979#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
980 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
981#else
982 #define ecb_expect(expr,value) (expr)
983#endif
984
985#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
986 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
987#else
988 #define ecb_prefetch(addr,rw,locality)
989#endif
990
991/* no emulation for ecb_decltype */
992#if ECB_CPP11
993 // older implementations might have problems with decltype(x)::type, work around it
994 template<class T> struct ecb_decltype_t { typedef T type; };
995 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
996#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
997 #define ecb_decltype(x) __typeof__ (x)
998#endif
999
1000#if _MSC_VER >= 1300
1001 #define ecb_deprecated __declspec (deprecated)
1002#else
1003 #define ecb_deprecated ecb_attribute ((__deprecated__))
1004#endif
1005
1006#if _MSC_VER >= 1500
1007 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
1008#elif ECB_GCC_VERSION(4,5)
1009 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
1010#else
1011 #define ecb_deprecated_message(msg) ecb_deprecated
1012#endif
1013
1014#if _MSC_VER >= 1400
1015 #define ecb_noinline __declspec (noinline)
1016#else
1017 #define ecb_noinline ecb_attribute ((__noinline__))
1018#endif
1019
1020#define ecb_unused ecb_attribute ((__unused__))
1021#define ecb_const ecb_attribute ((__const__))
1022#define ecb_pure ecb_attribute ((__pure__))
1023
1024#if ECB_C11 || __IBMC_NORETURN
1025 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
1026 #define ecb_noreturn _Noreturn
1027#elif ECB_CPP11
1028 #define ecb_noreturn [[noreturn]]
1029#elif _MSC_VER >= 1200
1030 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
1031 #define ecb_noreturn __declspec (noreturn)
1032#else
1033 #define ecb_noreturn ecb_attribute ((__noreturn__))
1034#endif
1035
1036#if ECB_GCC_VERSION(4,3)
1037 #define ecb_artificial ecb_attribute ((__artificial__))
1038 #define ecb_hot ecb_attribute ((__hot__))
1039 #define ecb_cold ecb_attribute ((__cold__))
1040#else
1041 #define ecb_artificial
1042 #define ecb_hot
1043 #define ecb_cold
1044#endif
1045
1046/* put around conditional expressions if you are very sure that the */
1047/* expression is mostly true or mostly false. note that these return */
1048/* booleans, not the expression. */
1049#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
1050#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
1051/* for compatibility to the rest of the world */
1052#define ecb_likely(expr) ecb_expect_true (expr)
1053#define ecb_unlikely(expr) ecb_expect_false (expr)
1054
1055/* count trailing zero bits and count # of one bits */
1056#if ECB_GCC_VERSION(3,4) \
1057 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
1058 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
1059 && ECB_CLANG_BUILTIN(__builtin_popcount))
1060 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
1061 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
1062 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
1063 #define ecb_ctz32(x) __builtin_ctz (x)
1064 #define ecb_ctz64(x) __builtin_ctzll (x)
1065 #define ecb_popcount32(x) __builtin_popcount (x)
1066 /* no popcountll */
1067#else
1068 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
1069 ecb_function_ ecb_const int
1070 ecb_ctz32 (uint32_t x)
1071 {
1072#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1073 unsigned long r;
1074 _BitScanForward (&r, x);
1075 return (int)r;
1076#else
1077 int r = 0;
1078
1079 x &= ~x + 1; /* this isolates the lowest bit */
1080
1081#if ECB_branchless_on_i386
1082 r += !!(x & 0xaaaaaaaa) << 0;
1083 r += !!(x & 0xcccccccc) << 1;
1084 r += !!(x & 0xf0f0f0f0) << 2;
1085 r += !!(x & 0xff00ff00) << 3;
1086 r += !!(x & 0xffff0000) << 4;
1087#else
1088 if (x & 0xaaaaaaaa) r += 1;
1089 if (x & 0xcccccccc) r += 2;
1090 if (x & 0xf0f0f0f0) r += 4;
1091 if (x & 0xff00ff00) r += 8;
1092 if (x & 0xffff0000) r += 16;
1093#endif
1094
1095 return r;
1096#endif
1097 }
1098
1099 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
1100 ecb_function_ ecb_const int
1101 ecb_ctz64 (uint64_t x)
1102 {
1103#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1104 unsigned long r;
1105 _BitScanForward64 (&r, x);
1106 return (int)r;
1107#else
1108 int shift = x & 0xffffffff ? 0 : 32;
1109 return ecb_ctz32 (x >> shift) + shift;
1110#endif
1111 }
1112
1113 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
1114 ecb_function_ ecb_const int
1115 ecb_popcount32 (uint32_t x)
1116 {
1117 x -= (x >> 1) & 0x55555555;
1118 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
1119 x = ((x >> 4) + x) & 0x0f0f0f0f;
1120 x *= 0x01010101;
1121
1122 return x >> 24;
1123 }
1124
1125 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
1126 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
1127 {
1128#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1129 unsigned long r;
1130 _BitScanReverse (&r, x);
1131 return (int)r;
1132#else
1133 int r = 0;
1134
1135 if (x >> 16) { x >>= 16; r += 16; }
1136 if (x >> 8) { x >>= 8; r += 8; }
1137 if (x >> 4) { x >>= 4; r += 4; }
1138 if (x >> 2) { x >>= 2; r += 2; }
1139 if (x >> 1) { r += 1; }
1140
1141 return r;
1142#endif
1143 }
1144
1145 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
1146 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
1147 {
1148#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1149 unsigned long r;
1150 _BitScanReverse64 (&r, x);
1151 return (int)r;
1152#else
1153 int r = 0;
1154
1155 if (x >> 32) { x >>= 32; r += 32; }
1156
1157 return r + ecb_ld32 (x);
1158#endif
1159 }
1160#endif
1161
1162ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
1163ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
1164ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
1165ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
1166
1167ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
1168ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
1169{
1170 return ( (x * 0x0802U & 0x22110U)
1171 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
1172}
1173
1174ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
1175ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
1176{
1177 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
1178 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
1179 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
1180 x = ( x >> 8 ) | ( x << 8);
1181
1182 return x;
1183}
1184
1185ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
1186ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
1187{
1188 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
1189 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
1190 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
1191 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
1192 x = ( x >> 16 ) | ( x << 16);
1193
1194 return x;
1195}
1196
1197/* popcount64 is only available on 64 bit cpus as gcc builtin */
1198/* so for this version we are lazy */
1199ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
1200ecb_function_ ecb_const int
1201ecb_popcount64 (uint64_t x)
1202{
1203 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
1204}
1205
1206ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
1207ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
1208ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
1209ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
1210ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
1211ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
1212ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
1213ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
1214
1215ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
1216ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
1217ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
1218ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
1219ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
1220ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
1221ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
1222ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
1223
1224#if ECB_CPP
1225
1226inline uint8_t ecb_ctz (uint8_t v) { return ecb_ctz32 (v); }
1227inline uint16_t ecb_ctz (uint16_t v) { return ecb_ctz32 (v); }
1228inline uint32_t ecb_ctz (uint32_t v) { return ecb_ctz32 (v); }
1229inline uint64_t ecb_ctz (uint64_t v) { return ecb_ctz64 (v); }
1230
1231inline bool ecb_is_pot (uint8_t v) { return ecb_is_pot32 (v); }
1232inline bool ecb_is_pot (uint16_t v) { return ecb_is_pot32 (v); }
1233inline bool ecb_is_pot (uint32_t v) { return ecb_is_pot32 (v); }
1234inline bool ecb_is_pot (uint64_t v) { return ecb_is_pot64 (v); }
1235
1236inline int ecb_ld (uint8_t v) { return ecb_ld32 (v); }
1237inline int ecb_ld (uint16_t v) { return ecb_ld32 (v); }
1238inline int ecb_ld (uint32_t v) { return ecb_ld32 (v); }
1239inline int ecb_ld (uint64_t v) { return ecb_ld64 (v); }
1240
1241inline int ecb_popcount (uint8_t v) { return ecb_popcount32 (v); }
1242inline int ecb_popcount (uint16_t v) { return ecb_popcount32 (v); }
1243inline int ecb_popcount (uint32_t v) { return ecb_popcount32 (v); }
1244inline int ecb_popcount (uint64_t v) { return ecb_popcount64 (v); }
1245
1246inline uint8_t ecb_bitrev (uint8_t v) { return ecb_bitrev8 (v); }
1247inline uint16_t ecb_bitrev (uint16_t v) { return ecb_bitrev16 (v); }
1248inline uint32_t ecb_bitrev (uint32_t v) { return ecb_bitrev32 (v); }
1249
1250inline uint8_t ecb_rotl (uint8_t v, unsigned int count) { return ecb_rotl8 (v, count); }
1251inline uint16_t ecb_rotl (uint16_t v, unsigned int count) { return ecb_rotl16 (v, count); }
1252inline uint32_t ecb_rotl (uint32_t v, unsigned int count) { return ecb_rotl32 (v, count); }
1253inline uint64_t ecb_rotl (uint64_t v, unsigned int count) { return ecb_rotl64 (v, count); }
1254
1255inline uint8_t ecb_rotr (uint8_t v, unsigned int count) { return ecb_rotr8 (v, count); }
1256inline uint16_t ecb_rotr (uint16_t v, unsigned int count) { return ecb_rotr16 (v, count); }
1257inline uint32_t ecb_rotr (uint32_t v, unsigned int count) { return ecb_rotr32 (v, count); }
1258inline uint64_t ecb_rotr (uint64_t v, unsigned int count) { return ecb_rotr64 (v, count); }
1259
1260#endif
1261
1262#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1263 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1264 #define ecb_bswap16(x) __builtin_bswap16 (x)
1265 #else
1266 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1267 #endif
1268 #define ecb_bswap32(x) __builtin_bswap32 (x)
1269 #define ecb_bswap64(x) __builtin_bswap64 (x)
1270#elif _MSC_VER
1271 #include <stdlib.h>
1272 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1273 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1274 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
1275#else
1276 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
1277 ecb_function_ ecb_const uint16_t
1278 ecb_bswap16 (uint16_t x)
1279 {
1280 return ecb_rotl16 (x, 8);
1281 }
1282
1283 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
1284 ecb_function_ ecb_const uint32_t
1285 ecb_bswap32 (uint32_t x)
1286 {
1287 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
1288 }
1289
1290 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
1291 ecb_function_ ecb_const uint64_t
1292 ecb_bswap64 (uint64_t x)
1293 {
1294 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
1295 }
1296#endif
1297
1298#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
1299 #define ecb_unreachable() __builtin_unreachable ()
1300#else
1301 /* this seems to work fine, but gcc always emits a warning for it :/ */
1302 ecb_inline ecb_noreturn void ecb_unreachable (void);
1303 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
1304#endif
1305
1306/* try to tell the compiler that some condition is definitely true */
1307#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
1308
1309ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
1310ecb_inline ecb_const uint32_t
1311ecb_byteorder_helper (void)
1312{
1313 /* the union code still generates code under pressure in gcc, */
1314 /* but less than using pointers, and always seems to */
1315 /* successfully return a constant. */
1316 /* the reason why we have this horrible preprocessor mess */
1317 /* is to avoid it in all cases, at least on common architectures */
1318 /* or when using a recent enough gcc version (>= 4.6) */
1319#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1320 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1321 #define ECB_LITTLE_ENDIAN 1
1322 return 0x44332211;
1323#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1324 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1325 #define ECB_BIG_ENDIAN 1
1326 return 0x11223344;
1327#else
1328 union
1329 {
1330 uint8_t c[4];
1331 uint32_t u;
1332 } u = { 0x11, 0x22, 0x33, 0x44 };
1333 return u.u;
1334#endif
1335}
1336
1337ecb_inline ecb_const ecb_bool ecb_big_endian (void);
1338ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
1339ecb_inline ecb_const ecb_bool ecb_little_endian (void);
1340ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
1341
1342/*****************************************************************************/
1343/* unaligned load/store */
1344
1345ecb_inline uint_fast16_t ecb_be_u16_to_host (uint_fast16_t v) { return ecb_little_endian () ? ecb_bswap16 (v) : v; }
1346ecb_inline uint_fast32_t ecb_be_u32_to_host (uint_fast32_t v) { return ecb_little_endian () ? ecb_bswap32 (v) : v; }
1347ecb_inline uint_fast64_t ecb_be_u64_to_host (uint_fast64_t v) { return ecb_little_endian () ? ecb_bswap64 (v) : v; }
1348
1349ecb_inline uint_fast16_t ecb_le_u16_to_host (uint_fast16_t v) { return ecb_big_endian () ? ecb_bswap16 (v) : v; }
1350ecb_inline uint_fast32_t ecb_le_u32_to_host (uint_fast32_t v) { return ecb_big_endian () ? ecb_bswap32 (v) : v; }
1351ecb_inline uint_fast64_t ecb_le_u64_to_host (uint_fast64_t v) { return ecb_big_endian () ? ecb_bswap64 (v) : v; }
1352
1353ecb_inline uint_fast16_t ecb_peek_u16_u (const void *ptr) { uint16_t v; memcpy (&v, ptr, sizeof (v)); return v; }
1354ecb_inline uint_fast32_t ecb_peek_u32_u (const void *ptr) { uint32_t v; memcpy (&v, ptr, sizeof (v)); return v; }
1355ecb_inline uint_fast64_t ecb_peek_u64_u (const void *ptr) { uint64_t v; memcpy (&v, ptr, sizeof (v)); return v; }
1356
1357ecb_inline uint_fast16_t ecb_peek_be_u16_u (const void *ptr) { return ecb_be_u16_to_host (ecb_peek_u16_u (ptr)); }
1358ecb_inline uint_fast32_t ecb_peek_be_u32_u (const void *ptr) { return ecb_be_u32_to_host (ecb_peek_u32_u (ptr)); }
1359ecb_inline uint_fast64_t ecb_peek_be_u64_u (const void *ptr) { return ecb_be_u64_to_host (ecb_peek_u64_u (ptr)); }
1360
1361ecb_inline uint_fast16_t ecb_peek_le_u16_u (const void *ptr) { return ecb_le_u16_to_host (ecb_peek_u16_u (ptr)); }
1362ecb_inline uint_fast32_t ecb_peek_le_u32_u (const void *ptr) { return ecb_le_u32_to_host (ecb_peek_u32_u (ptr)); }
1363ecb_inline uint_fast64_t ecb_peek_le_u64_u (const void *ptr) { return ecb_le_u64_to_host (ecb_peek_u64_u (ptr)); }
1364
1365ecb_inline uint_fast16_t ecb_host_to_be_u16 (uint_fast16_t v) { return ecb_little_endian () ? ecb_bswap16 (v) : v; }
1366ecb_inline uint_fast32_t ecb_host_to_be_u32 (uint_fast32_t v) { return ecb_little_endian () ? ecb_bswap32 (v) : v; }
1367ecb_inline uint_fast64_t ecb_host_to_be_u64 (uint_fast64_t v) { return ecb_little_endian () ? ecb_bswap64 (v) : v; }
1368
1369ecb_inline uint_fast16_t ecb_host_to_le_u16 (uint_fast16_t v) { return ecb_big_endian () ? ecb_bswap16 (v) : v; }
1370ecb_inline uint_fast32_t ecb_host_to_le_u32 (uint_fast32_t v) { return ecb_big_endian () ? ecb_bswap32 (v) : v; }
1371ecb_inline uint_fast64_t ecb_host_to_le_u64 (uint_fast64_t v) { return ecb_big_endian () ? ecb_bswap64 (v) : v; }
1372
1373ecb_inline void ecb_poke_u16_u (void *ptr, uint16_t v) { memcpy (ptr, &v, sizeof (v)); }
1374ecb_inline void ecb_poke_u32_u (void *ptr, uint32_t v) { memcpy (ptr, &v, sizeof (v)); }
1375ecb_inline void ecb_poke_u64_u (void *ptr, uint64_t v) { memcpy (ptr, &v, sizeof (v)); }
1376
1377ecb_inline void ecb_poke_be_u16_u (void *ptr, uint_fast16_t v) { ecb_poke_u16_u (ptr, ecb_host_to_be_u16 (v)); }
1378ecb_inline void ecb_poke_be_u32_u (void *ptr, uint_fast32_t v) { ecb_poke_u32_u (ptr, ecb_host_to_be_u32 (v)); }
1379ecb_inline void ecb_poke_be_u64_u (void *ptr, uint_fast64_t v) { ecb_poke_u64_u (ptr, ecb_host_to_be_u64 (v)); }
1380
1381ecb_inline void ecb_poke_le_u16_u (void *ptr, uint_fast16_t v) { ecb_poke_u16_u (ptr, ecb_host_to_le_u16 (v)); }
1382ecb_inline void ecb_poke_le_u32_u (void *ptr, uint_fast32_t v) { ecb_poke_u32_u (ptr, ecb_host_to_le_u32 (v)); }
1383ecb_inline void ecb_poke_le_u64_u (void *ptr, uint_fast64_t v) { ecb_poke_u64_u (ptr, ecb_host_to_le_u64 (v)); }
1384
1385#if ECB_CPP
1386
1387inline uint8_t ecb_bswap (uint8_t v) { return v; }
1388inline uint16_t ecb_bswap (uint16_t v) { return ecb_bswap16 (v); }
1389inline uint32_t ecb_bswap (uint32_t v) { return ecb_bswap32 (v); }
1390inline uint64_t ecb_bswap (uint64_t v) { return ecb_bswap64 (v); }
1391
1392template<typename T> inline T ecb_be_to_host (T v) { return ecb_little_endian () ? ecb_bswap (v) : v; }
1393template<typename T> inline T ecb_le_to_host (T v) { return ecb_big_endian () ? ecb_bswap (v) : v; }
1394template<typename T> inline T ecb_peek (const void *ptr) { return *(const T *)ptr; }
1395template<typename T> inline T ecb_peek_be (const void *ptr) { return ecb_be_to_host (ecb_peek <T> (ptr)); }
1396template<typename T> inline T ecb_peek_le (const void *ptr) { return ecb_le_to_host (ecb_peek <T> (ptr)); }
1397template<typename T> inline T ecb_peek_u (const void *ptr) { T v; memcpy (&v, ptr, sizeof (v)); return v; }
1398template<typename T> inline T ecb_peek_be_u (const void *ptr) { return ecb_be_to_host (ecb_peek_u<T> (ptr)); }
1399template<typename T> inline T ecb_peek_le_u (const void *ptr) { return ecb_le_to_host (ecb_peek_u<T> (ptr)); }
1400
1401template<typename T> inline T ecb_host_to_be (T v) { return ecb_little_endian () ? ecb_bswap (v) : v; }
1402template<typename T> inline T ecb_host_to_le (T v) { return ecb_big_endian () ? ecb_bswap (v) : v; }
1403template<typename T> inline void ecb_poke (void *ptr, T v) { *(T *)ptr = v; }
1404template<typename T> inline void ecb_poke_be (void *ptr, T v) { return ecb_poke <T> (ptr, ecb_host_to_be (v)); }
1405template<typename T> inline void ecb_poke_le (void *ptr, T v) { return ecb_poke <T> (ptr, ecb_host_to_le (v)); }
1406template<typename T> inline void ecb_poke_u (void *ptr, T v) { memcpy (ptr, &v, sizeof (v)); }
1407template<typename T> inline void ecb_poke_be_u (void *ptr, T v) { return ecb_poke_u<T> (ptr, ecb_host_to_be (v)); }
1408template<typename T> inline void ecb_poke_le_u (void *ptr, T v) { return ecb_poke_u<T> (ptr, ecb_host_to_le (v)); }
1409
1410#endif
1411
1412/*****************************************************************************/
1413
1414#if ECB_GCC_VERSION(3,0) || ECB_C99
1415 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1416#else
1417 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1418#endif
1419
1420#if ECB_CPP
1421 template<typename T>
1422 static inline T ecb_div_rd (T val, T div)
1423 {
1424 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1425 }
1426 template<typename T>
1427 static inline T ecb_div_ru (T val, T div)
1428 {
1429 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1430 }
1431#else
1432 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1433 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1434#endif
1435
1436#if ecb_cplusplus_does_not_suck
1437 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1438 template<typename T, int N>
1439 static inline int ecb_array_length (const T (&arr)[N])
1440 {
1441 return N;
1442 }
1443#else
1444 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1445#endif
1446
1447/*****************************************************************************/
1448
1449ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1450ecb_function_ ecb_const uint32_t
1451ecb_binary16_to_binary32 (uint32_t x)
1452{
1453 unsigned int s = (x & 0x8000) << (31 - 15);
1454 int e = (x >> 10) & 0x001f;
1455 unsigned int m = x & 0x03ff;
1456
1457 if (ecb_expect_false (e == 31))
1458 /* infinity or NaN */
1459 e = 255 - (127 - 15);
1460 else if (ecb_expect_false (!e))
1461 {
1462 if (ecb_expect_true (!m))
1463 /* zero, handled by code below by forcing e to 0 */
1464 e = 0 - (127 - 15);
1465 else
1466 {
1467 /* subnormal, renormalise */
1468 unsigned int s = 10 - ecb_ld32 (m);
1469
1470 m = (m << s) & 0x3ff; /* mask implicit bit */
1471 e -= s - 1;
1472 }
1473 }
1474
1475 /* e and m now are normalised, or zero, (or inf or nan) */
1476 e += 127 - 15;
1477
1478 return s | (e << 23) | (m << (23 - 10));
1479}
1480
1481ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1482ecb_function_ ecb_const uint16_t
1483ecb_binary32_to_binary16 (uint32_t x)
1484{
1485 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1486 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1487 unsigned int m = x & 0x007fffff;
1488
1489 x &= 0x7fffffff;
1490
1491 /* if it's within range of binary16 normals, use fast path */
1492 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1493 {
1494 /* mantissa round-to-even */
1495 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1496
1497 /* handle overflow */
1498 if (ecb_expect_false (m >= 0x00800000))
1499 {
1500 m >>= 1;
1501 e += 1;
1502 }
1503
1504 return s | (e << 10) | (m >> (23 - 10));
1505 }
1506
1507 /* handle large numbers and infinity */
1508 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1509 return s | 0x7c00;
1510
1511 /* handle zero, subnormals and small numbers */
1512 if (ecb_expect_true (x < 0x38800000))
1513 {
1514 /* zero */
1515 if (ecb_expect_true (!x))
1516 return s;
1517
1518 /* handle subnormals */
1519
1520 /* too small, will be zero */
1521 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1522 return s;
1523
1524 m |= 0x00800000; /* make implicit bit explicit */
1525
1526 /* very tricky - we need to round to the nearest e (+10) bit value */
1527 {
1528 unsigned int bits = 14 - e;
1529 unsigned int half = (1 << (bits - 1)) - 1;
1530 unsigned int even = (m >> bits) & 1;
1531
1532 /* if this overflows, we will end up with a normalised number */
1533 m = (m + half + even) >> bits;
1534 }
1535
1536 return s | m;
1537 }
1538
1539 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1540 m >>= 13;
1541
1542 return s | 0x7c00 | m | !m;
1543}
1544
1545/*******************************************************************************/
1546/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1547
1548/* basically, everything uses "ieee pure-endian" floating point numbers */
1549/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1550#if 0 \
1551 || __i386 || __i386__ \
1552 || ECB_GCC_AMD64 \
1553 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1554 || defined __s390__ || defined __s390x__ \
1555 || defined __mips__ \
1556 || defined __alpha__ \
1557 || defined __hppa__ \
1558 || defined __ia64__ \
1559 || defined __m68k__ \
1560 || defined __m88k__ \
1561 || defined __sh__ \
1562 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1563 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1564 || defined __aarch64__
1565 #define ECB_STDFP 1
1566#else
1567 #define ECB_STDFP 0
1568#endif
1569
1570#ifndef ECB_NO_LIBM
1571
1572 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1573
1574 /* only the oldest of old doesn't have this one. solaris. */
1575 #ifdef INFINITY
1576 #define ECB_INFINITY INFINITY
1577 #else
1578 #define ECB_INFINITY HUGE_VAL
1579 #endif
1580
1581 #ifdef NAN
1582 #define ECB_NAN NAN
1583 #else
1584 #define ECB_NAN ECB_INFINITY
1585 #endif
1586
1587 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1588 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1589 #define ecb_frexpf(x,e) frexpf ((x), (e))
1590 #else
1591 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1592 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1593 #endif
1594
1595 /* convert a float to ieee single/binary32 */
1596 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1597 ecb_function_ ecb_const uint32_t
1598 ecb_float_to_binary32 (float x)
1599 {
1600 uint32_t r;
1601
1602 #if ECB_STDFP
1603 memcpy (&r, &x, 4);
1604 #else
1605 /* slow emulation, works for anything but -0 */
1606 uint32_t m;
1607 int e;
1608
1609 if (x == 0e0f ) return 0x00000000U;
1610 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1611 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1612 if (x != x ) return 0x7fbfffffU;
1613
1614 m = ecb_frexpf (x, &e) * 0x1000000U;
1615
1616 r = m & 0x80000000U;
1617
1618 if (r)
1619 m = -m;
1620
1621 if (e <= -126)
1622 {
1623 m &= 0xffffffU;
1624 m >>= (-125 - e);
1625 e = -126;
1626 }
1627
1628 r |= (e + 126) << 23;
1629 r |= m & 0x7fffffU;
1630 #endif
1631
1632 return r;
1633 }
1634
1635 /* converts an ieee single/binary32 to a float */
1636 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1637 ecb_function_ ecb_const float
1638 ecb_binary32_to_float (uint32_t x)
1639 {
1640 float r;
1641
1642 #if ECB_STDFP
1643 memcpy (&r, &x, 4);
1644 #else
1645 /* emulation, only works for normals and subnormals and +0 */
1646 int neg = x >> 31;
1647 int e = (x >> 23) & 0xffU;
1648
1649 x &= 0x7fffffU;
1650
1651 if (e)
1652 x |= 0x800000U;
1653 else
1654 e = 1;
1655
1656 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1657 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1658
1659 r = neg ? -r : r;
1660 #endif
1661
1662 return r;
1663 }
1664
1665 /* convert a double to ieee double/binary64 */
1666 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1667 ecb_function_ ecb_const uint64_t
1668 ecb_double_to_binary64 (double x)
1669 {
1670 uint64_t r;
1671
1672 #if ECB_STDFP
1673 memcpy (&r, &x, 8);
1674 #else
1675 /* slow emulation, works for anything but -0 */
1676 uint64_t m;
1677 int e;
1678
1679 if (x == 0e0 ) return 0x0000000000000000U;
1680 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1681 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1682 if (x != x ) return 0X7ff7ffffffffffffU;
1683
1684 m = frexp (x, &e) * 0x20000000000000U;
1685
1686 r = m & 0x8000000000000000;;
1687
1688 if (r)
1689 m = -m;
1690
1691 if (e <= -1022)
1692 {
1693 m &= 0x1fffffffffffffU;
1694 m >>= (-1021 - e);
1695 e = -1022;
1696 }
1697
1698 r |= ((uint64_t)(e + 1022)) << 52;
1699 r |= m & 0xfffffffffffffU;
1700 #endif
1701
1702 return r;
1703 }
1704
1705 /* converts an ieee double/binary64 to a double */
1706 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1707 ecb_function_ ecb_const double
1708 ecb_binary64_to_double (uint64_t x)
1709 {
1710 double r;
1711
1712 #if ECB_STDFP
1713 memcpy (&r, &x, 8);
1714 #else
1715 /* emulation, only works for normals and subnormals and +0 */
1716 int neg = x >> 63;
1717 int e = (x >> 52) & 0x7ffU;
1718
1719 x &= 0xfffffffffffffU;
1720
1721 if (e)
1722 x |= 0x10000000000000U;
1723 else
1724 e = 1;
1725
1726 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1727 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1728
1729 r = neg ? -r : r;
1730 #endif
1731
1732 return r;
1733 }
1734
1735 /* convert a float to ieee half/binary16 */
1736 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1737 ecb_function_ ecb_const uint16_t
1738 ecb_float_to_binary16 (float x)
1739 {
1740 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1741 }
1742
1743 /* convert an ieee half/binary16 to float */
1744 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1745 ecb_function_ ecb_const float
1746 ecb_binary16_to_float (uint16_t x)
1747 {
1748 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1749 }
1750
1751#endif
1752
1753#endif
1754
1755/* ECB.H END */
1756
1757#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1758/* if your architecture doesn't need memory fences, e.g. because it is
1759 * single-cpu/core, or if you use libev in a project that doesn't use libev
1760 * from multiple threads, then you can define ECB_NO_THREADS when compiling
1761 * libev, in which cases the memory fences become nops.
1762 * alternatively, you can remove this #error and link against libpthread,
1763 * which will then provide the memory fences.
1764 */
1765# error "memory fences not defined for your architecture, please report"
1766#endif
1767
1768#ifndef ECB_MEMORY_FENCE
1769# define ECB_MEMORY_FENCE do { } while (0)
1770# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1771# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1772#endif
1773
1774#define inline_size ecb_inline
1775
1776#if EV_FEATURE_CODE
475# define inline_speed static inline 1777# define inline_speed ecb_inline
1778#else
1779# define inline_speed ecb_noinline static
476#endif 1780#endif
1781
1782/*****************************************************************************/
1783/* raw syscall wrappers */
1784
1785#if EV_NEED_SYSCALL
1786
1787#include <sys/syscall.h>
1788
1789/*
1790 * define some syscall wrappers for common architectures
1791 * this is mostly for nice looks during debugging, not performance.
1792 * our syscalls return < 0, not == -1, on error. which is good
1793 * enough for linux aio.
1794 * TODO: arm is also common nowadays, maybe even mips and x86
1795 * TODO: after implementing this, it suddenly looks like overkill, but its hard to remove...
1796 */
1797#if __GNUC__ && __linux && ECB_AMD64 && !EV_FEATURE_CODE
1798 /* the costly errno access probably kills this for size optimisation */
1799
1800 #define ev_syscall(nr,narg,arg1,arg2,arg3,arg4,arg5,arg6) \
1801 ({ \
1802 long res; \
1803 register unsigned long r6 __asm__ ("r9" ); \
1804 register unsigned long r5 __asm__ ("r8" ); \
1805 register unsigned long r4 __asm__ ("r10"); \
1806 register unsigned long r3 __asm__ ("rdx"); \
1807 register unsigned long r2 __asm__ ("rsi"); \
1808 register unsigned long r1 __asm__ ("rdi"); \
1809 if (narg >= 6) r6 = (unsigned long)(arg6); \
1810 if (narg >= 5) r5 = (unsigned long)(arg5); \
1811 if (narg >= 4) r4 = (unsigned long)(arg4); \
1812 if (narg >= 3) r3 = (unsigned long)(arg3); \
1813 if (narg >= 2) r2 = (unsigned long)(arg2); \
1814 if (narg >= 1) r1 = (unsigned long)(arg1); \
1815 __asm__ __volatile__ ( \
1816 "syscall\n\t" \
1817 : "=a" (res) \
1818 : "0" (nr), "r" (r1), "r" (r2), "r" (r3), "r" (r4), "r" (r5) \
1819 : "cc", "r11", "cx", "memory"); \
1820 errno = -res; \
1821 res; \
1822 })
1823
1824#endif
1825
1826#ifdef ev_syscall
1827 #define ev_syscall0(nr) ev_syscall (nr, 0, 0, 0, 0, 0, 0, 0)
1828 #define ev_syscall1(nr,arg1) ev_syscall (nr, 1, arg1, 0, 0, 0, 0, 0)
1829 #define ev_syscall2(nr,arg1,arg2) ev_syscall (nr, 2, arg1, arg2, 0, 0, 0, 0)
1830 #define ev_syscall3(nr,arg1,arg2,arg3) ev_syscall (nr, 3, arg1, arg2, arg3, 0, 0, 0)
1831 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) ev_syscall (nr, 3, arg1, arg2, arg3, arg4, 0, 0)
1832 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) ev_syscall (nr, 5, arg1, arg2, arg3, arg4, arg5, 0)
1833 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) ev_syscall (nr, 6, arg1, arg2, arg3, arg4, arg5,arg6)
1834#else
1835 #define ev_syscall0(nr) syscall (nr)
1836 #define ev_syscall1(nr,arg1) syscall (nr, arg1)
1837 #define ev_syscall2(nr,arg1,arg2) syscall (nr, arg1, arg2)
1838 #define ev_syscall3(nr,arg1,arg2,arg3) syscall (nr, arg1, arg2, arg3)
1839 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) syscall (nr, arg1, arg2, arg3, arg4)
1840 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) syscall (nr, arg1, arg2, arg3, arg4, arg5)
1841 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) syscall (nr, arg1, arg2, arg3, arg4, arg5,arg6)
1842#endif
1843
1844#endif
1845
1846/*****************************************************************************/
477 1847
478#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1848#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
479 1849
480#if EV_MINPRI == EV_MAXPRI 1850#if EV_MINPRI == EV_MAXPRI
481# define ABSPRI(w) (((W)w), 0) 1851# define ABSPRI(w) (((W)w), 0)
482#else 1852#else
483# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1853# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
484#endif 1854#endif
485 1855
486#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1856#define EMPTY /* required for microsofts broken pseudo-c compiler */
487#define EMPTY2(a,b) /* used to suppress some warnings */
488 1857
489typedef ev_watcher *W; 1858typedef ev_watcher *W;
490typedef ev_watcher_list *WL; 1859typedef ev_watcher_list *WL;
491typedef ev_watcher_time *WT; 1860typedef ev_watcher_time *WT;
492 1861
493#define ev_active(w) ((W)(w))->active 1862#define ev_active(w) ((W)(w))->active
494#define ev_at(w) ((WT)(w))->at 1863#define ev_at(w) ((WT)(w))->at
495 1864
496#if EV_USE_REALTIME 1865#if EV_USE_REALTIME
497/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 1866/* sig_atomic_t is used to avoid per-thread variables or locking but still */
498/* giving it a reasonably high chance of working on typical architetcures */ 1867/* giving it a reasonably high chance of working on typical architectures */
499static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 1868static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
500#endif 1869#endif
501 1870
502#if EV_USE_MONOTONIC 1871#if EV_USE_MONOTONIC
503static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 1872static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
… …
517# include "ev_win32.c" 1886# include "ev_win32.c"
518#endif 1887#endif
519 1888
520/*****************************************************************************/ 1889/*****************************************************************************/
521 1890
1891#if EV_USE_LINUXAIO
1892# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
1893#endif
1894
1895/* define a suitable floor function (only used by periodics atm) */
1896
1897#if EV_USE_FLOOR
1898# include <math.h>
1899# define ev_floor(v) floor (v)
1900#else
1901
1902#include <float.h>
1903
1904/* a floor() replacement function, should be independent of ev_tstamp type */
1905ecb_noinline
1906static ev_tstamp
1907ev_floor (ev_tstamp v)
1908{
1909 /* the choice of shift factor is not terribly important */
1910#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1911 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1912#else
1913 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1914#endif
1915
1916 /* special treatment for negative arguments */
1917 if (ecb_expect_false (v < 0.))
1918 {
1919 ev_tstamp f = -ev_floor (-v);
1920
1921 return f - (f == v ? 0 : 1);
1922 }
1923
1924 /* argument too large for an unsigned long? then reduce it */
1925 if (ecb_expect_false (v >= shift))
1926 {
1927 ev_tstamp f;
1928
1929 if (v == v - 1.)
1930 return v; /* very large numbers are assumed to be integer */
1931
1932 f = shift * ev_floor (v * (1. / shift));
1933 return f + ev_floor (v - f);
1934 }
1935
1936 /* fits into an unsigned long */
1937 return (unsigned long)v;
1938}
1939
1940#endif
1941
1942/*****************************************************************************/
1943
1944#ifdef __linux
1945# include <sys/utsname.h>
1946#endif
1947
1948ecb_noinline ecb_cold
1949static unsigned int
1950ev_linux_version (void)
1951{
1952#ifdef __linux
1953 unsigned int v = 0;
1954 struct utsname buf;
1955 int i;
1956 char *p = buf.release;
1957
1958 if (uname (&buf))
1959 return 0;
1960
1961 for (i = 3+1; --i; )
1962 {
1963 unsigned int c = 0;
1964
1965 for (;;)
1966 {
1967 if (*p >= '0' && *p <= '9')
1968 c = c * 10 + *p++ - '0';
1969 else
1970 {
1971 p += *p == '.';
1972 break;
1973 }
1974 }
1975
1976 v = (v << 8) | c;
1977 }
1978
1979 return v;
1980#else
1981 return 0;
1982#endif
1983}
1984
1985/*****************************************************************************/
1986
1987#if EV_AVOID_STDIO
1988ecb_noinline ecb_cold
1989static void
1990ev_printerr (const char *msg)
1991{
1992 write (STDERR_FILENO, msg, strlen (msg));
1993}
1994#endif
1995
522static void (*syserr_cb)(const char *msg); 1996static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
523 1997
1998ecb_cold
524void 1999void
525ev_set_syserr_cb (void (*cb)(const char *msg)) 2000ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
526{ 2001{
527 syserr_cb = cb; 2002 syserr_cb = cb;
528} 2003}
529 2004
530static void noinline 2005ecb_noinline ecb_cold
2006static void
531ev_syserr (const char *msg) 2007ev_syserr (const char *msg)
532{ 2008{
533 if (!msg) 2009 if (!msg)
534 msg = "(libev) system error"; 2010 msg = "(libev) system error";
535 2011
536 if (syserr_cb) 2012 if (syserr_cb)
537 syserr_cb (msg); 2013 syserr_cb (msg);
538 else 2014 else
539 { 2015 {
2016#if EV_AVOID_STDIO
2017 ev_printerr (msg);
2018 ev_printerr (": ");
2019 ev_printerr (strerror (errno));
2020 ev_printerr ("\n");
2021#else
540 perror (msg); 2022 perror (msg);
2023#endif
541 abort (); 2024 abort ();
542 } 2025 }
543} 2026}
544 2027
545static void * 2028static void *
546ev_realloc_emul (void *ptr, long size) 2029ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
547{ 2030{
548 /* some systems, notably openbsd and darwin, fail to properly 2031 /* some systems, notably openbsd and darwin, fail to properly
549 * implement realloc (x, 0) (as required by both ansi c-98 and 2032 * implement realloc (x, 0) (as required by both ansi c-89 and
550 * the single unix specification, so work around them here. 2033 * the single unix specification, so work around them here.
2034 * recently, also (at least) fedora and debian started breaking it,
2035 * despite documenting it otherwise.
551 */ 2036 */
552 2037
553 if (size) 2038 if (size)
554 return realloc (ptr, size); 2039 return realloc (ptr, size);
555 2040
556 free (ptr); 2041 free (ptr);
557 return 0; 2042 return 0;
558} 2043}
559 2044
560static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 2045static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
561 2046
2047ecb_cold
562void 2048void
563ev_set_allocator (void *(*cb)(void *ptr, long size)) 2049ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
564{ 2050{
565 alloc = cb; 2051 alloc = cb;
566} 2052}
567 2053
568inline_speed void * 2054inline_speed void *
… …
570{ 2056{
571 ptr = alloc (ptr, size); 2057 ptr = alloc (ptr, size);
572 2058
573 if (!ptr && size) 2059 if (!ptr && size)
574 { 2060 {
2061#if EV_AVOID_STDIO
2062 ev_printerr ("(libev) memory allocation failed, aborting.\n");
2063#else
575 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 2064 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
2065#endif
576 abort (); 2066 abort ();
577 } 2067 }
578 2068
579 return ptr; 2069 return ptr;
580} 2070}
… …
591typedef struct 2081typedef struct
592{ 2082{
593 WL head; 2083 WL head;
594 unsigned char events; /* the events watched for */ 2084 unsigned char events; /* the events watched for */
595 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */ 2085 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
596 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 2086 unsigned char emask; /* some backends store the actual kernel mask in here */
597 unsigned char unused; 2087 unsigned char eflags; /* flags field for use by backends */
598#if EV_USE_EPOLL 2088#if EV_USE_EPOLL
599 unsigned int egen; /* generation counter to counter epoll bugs */ 2089 unsigned int egen; /* generation counter to counter epoll bugs */
600#endif 2090#endif
601#if EV_SELECT_IS_WINSOCKET 2091#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
602 SOCKET handle; 2092 SOCKET handle;
2093#endif
2094#if EV_USE_IOCP
2095 OVERLAPPED or, ow;
603#endif 2096#endif
604} ANFD; 2097} ANFD;
605 2098
606/* stores the pending event set for a given watcher */ 2099/* stores the pending event set for a given watcher */
607typedef struct 2100typedef struct
… …
649 #undef VAR 2142 #undef VAR
650 }; 2143 };
651 #include "ev_wrap.h" 2144 #include "ev_wrap.h"
652 2145
653 static struct ev_loop default_loop_struct; 2146 static struct ev_loop default_loop_struct;
654 struct ev_loop *ev_default_loop_ptr; 2147 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
655 2148
656#else 2149#else
657 2150
658 ev_tstamp ev_rt_now; 2151 EV_API_DECL ev_tstamp ev_rt_now = EV_TS_CONST (0.); /* needs to be initialised to make it a definition despite extern */
659 #define VAR(name,decl) static decl; 2152 #define VAR(name,decl) static decl;
660 #include "ev_vars.h" 2153 #include "ev_vars.h"
661 #undef VAR 2154 #undef VAR
662 2155
663 static int ev_default_loop_ptr; 2156 static int ev_default_loop_ptr;
664 2157
665#endif 2158#endif
666 2159
667#if EV_MINIMAL < 2 2160#if EV_FEATURE_API
668# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 2161# define EV_RELEASE_CB if (ecb_expect_false (release_cb)) release_cb (EV_A)
669# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 2162# define EV_ACQUIRE_CB if (ecb_expect_false (acquire_cb)) acquire_cb (EV_A)
670# define EV_INVOKE_PENDING invoke_cb (EV_A) 2163# define EV_INVOKE_PENDING invoke_cb (EV_A)
671#else 2164#else
672# define EV_RELEASE_CB (void)0 2165# define EV_RELEASE_CB (void)0
673# define EV_ACQUIRE_CB (void)0 2166# define EV_ACQUIRE_CB (void)0
674# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 2167# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
675#endif 2168#endif
676 2169
677#define EVUNLOOP_RECURSE 0x80 2170#define EVBREAK_RECURSE 0x80
678 2171
679/*****************************************************************************/ 2172/*****************************************************************************/
680 2173
681#ifndef EV_HAVE_EV_TIME 2174#ifndef EV_HAVE_EV_TIME
682ev_tstamp 2175ev_tstamp
683ev_time (void) 2176ev_time (void) EV_NOEXCEPT
684{ 2177{
685#if EV_USE_REALTIME 2178#if EV_USE_REALTIME
686 if (expect_true (have_realtime)) 2179 if (ecb_expect_true (have_realtime))
687 { 2180 {
688 struct timespec ts; 2181 struct timespec ts;
689 clock_gettime (CLOCK_REALTIME, &ts); 2182 clock_gettime (CLOCK_REALTIME, &ts);
690 return ts.tv_sec + ts.tv_nsec * 1e-9; 2183 return EV_TS_GET (ts);
691 } 2184 }
692#endif 2185#endif
693 2186
2187 {
694 struct timeval tv; 2188 struct timeval tv;
695 gettimeofday (&tv, 0); 2189 gettimeofday (&tv, 0);
696 return tv.tv_sec + tv.tv_usec * 1e-6; 2190 return EV_TV_GET (tv);
2191 }
697} 2192}
698#endif 2193#endif
699 2194
700inline_size ev_tstamp 2195inline_size ev_tstamp
701get_clock (void) 2196get_clock (void)
702{ 2197{
703#if EV_USE_MONOTONIC 2198#if EV_USE_MONOTONIC
704 if (expect_true (have_monotonic)) 2199 if (ecb_expect_true (have_monotonic))
705 { 2200 {
706 struct timespec ts; 2201 struct timespec ts;
707 clock_gettime (CLOCK_MONOTONIC, &ts); 2202 clock_gettime (CLOCK_MONOTONIC, &ts);
708 return ts.tv_sec + ts.tv_nsec * 1e-9; 2203 return EV_TS_GET (ts);
709 } 2204 }
710#endif 2205#endif
711 2206
712 return ev_time (); 2207 return ev_time ();
713} 2208}
714 2209
715#if EV_MULTIPLICITY 2210#if EV_MULTIPLICITY
716ev_tstamp 2211ev_tstamp
717ev_now (EV_P) 2212ev_now (EV_P) EV_NOEXCEPT
718{ 2213{
719 return ev_rt_now; 2214 return ev_rt_now;
720} 2215}
721#endif 2216#endif
722 2217
723void 2218void
724ev_sleep (ev_tstamp delay) 2219ev_sleep (ev_tstamp delay) EV_NOEXCEPT
725{ 2220{
726 if (delay > 0.) 2221 if (delay > EV_TS_CONST (0.))
727 { 2222 {
728#if EV_USE_NANOSLEEP 2223#if EV_USE_NANOSLEEP
729 struct timespec ts; 2224 struct timespec ts;
730 2225
731 ts.tv_sec = (time_t)delay; 2226 EV_TS_SET (ts, delay);
732 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
733
734 nanosleep (&ts, 0); 2227 nanosleep (&ts, 0);
735#elif defined(_WIN32) 2228#elif defined _WIN32
2229 /* maybe this should round up, as ms is very low resolution */
2230 /* compared to select (µs) or nanosleep (ns) */
736 Sleep ((unsigned long)(delay * 1e3)); 2231 Sleep ((unsigned long)(EV_TS_TO_MSEC (delay)));
737#else 2232#else
738 struct timeval tv; 2233 struct timeval tv;
739
740 tv.tv_sec = (time_t)delay;
741 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
742 2234
743 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 2235 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
744 /* something not guaranteed by newer posix versions, but guaranteed */ 2236 /* something not guaranteed by newer posix versions, but guaranteed */
745 /* by older ones */ 2237 /* by older ones */
2238 EV_TV_SET (tv, delay);
746 select (0, 0, 0, 0, &tv); 2239 select (0, 0, 0, 0, &tv);
747#endif 2240#endif
748 } 2241 }
749} 2242}
750 2243
751/*****************************************************************************/ 2244/*****************************************************************************/
752 2245
753#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 2246#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
754 2247
755/* find a suitable new size for the given array, */ 2248/* find a suitable new size for the given array, */
756/* hopefully by rounding to a ncie-to-malloc size */ 2249/* hopefully by rounding to a nice-to-malloc size */
757inline_size int 2250inline_size int
758array_nextsize (int elem, int cur, int cnt) 2251array_nextsize (int elem, int cur, int cnt)
759{ 2252{
760 int ncur = cur + 1; 2253 int ncur = cur + 1;
761 2254
762 do 2255 do
763 ncur <<= 1; 2256 ncur <<= 1;
764 while (cnt > ncur); 2257 while (cnt > ncur);
765 2258
766 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 2259 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
767 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 2260 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
768 { 2261 {
769 ncur *= elem; 2262 ncur *= elem;
770 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 2263 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
771 ncur = ncur - sizeof (void *) * 4; 2264 ncur = ncur - sizeof (void *) * 4;
… …
773 } 2266 }
774 2267
775 return ncur; 2268 return ncur;
776} 2269}
777 2270
778static noinline void * 2271ecb_noinline ecb_cold
2272static void *
779array_realloc (int elem, void *base, int *cur, int cnt) 2273array_realloc (int elem, void *base, int *cur, int cnt)
780{ 2274{
781 *cur = array_nextsize (elem, *cur, cnt); 2275 *cur = array_nextsize (elem, *cur, cnt);
782 return ev_realloc (base, elem * *cur); 2276 return ev_realloc (base, elem * *cur);
783} 2277}
784 2278
2279#define array_needsize_noinit(base,offset,count)
2280
785#define array_init_zero(base,count) \ 2281#define array_needsize_zerofill(base,offset,count) \
786 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 2282 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
787 2283
788#define array_needsize(type,base,cur,cnt,init) \ 2284#define array_needsize(type,base,cur,cnt,init) \
789 if (expect_false ((cnt) > (cur))) \ 2285 if (ecb_expect_false ((cnt) > (cur))) \
790 { \ 2286 { \
791 int ocur_ = (cur); \ 2287 ecb_unused int ocur_ = (cur); \
792 (base) = (type *)array_realloc \ 2288 (base) = (type *)array_realloc \
793 (sizeof (type), (base), &(cur), (cnt)); \ 2289 (sizeof (type), (base), &(cur), (cnt)); \
794 init ((base) + (ocur_), (cur) - ocur_); \ 2290 init ((base), ocur_, ((cur) - ocur_)); \
795 } 2291 }
796 2292
797#if 0 2293#if 0
798#define array_slim(type,stem) \ 2294#define array_slim(type,stem) \
799 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2295 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
… …
808 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 2304 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
809 2305
810/*****************************************************************************/ 2306/*****************************************************************************/
811 2307
812/* dummy callback for pending events */ 2308/* dummy callback for pending events */
813static void noinline 2309ecb_noinline
2310static void
814pendingcb (EV_P_ ev_prepare *w, int revents) 2311pendingcb (EV_P_ ev_prepare *w, int revents)
815{ 2312{
816} 2313}
817 2314
818void noinline 2315ecb_noinline
2316void
819ev_feed_event (EV_P_ void *w, int revents) 2317ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
820{ 2318{
821 W w_ = (W)w; 2319 W w_ = (W)w;
822 int pri = ABSPRI (w_); 2320 int pri = ABSPRI (w_);
823 2321
824 if (expect_false (w_->pending)) 2322 if (ecb_expect_false (w_->pending))
825 pendings [pri][w_->pending - 1].events |= revents; 2323 pendings [pri][w_->pending - 1].events |= revents;
826 else 2324 else
827 { 2325 {
828 w_->pending = ++pendingcnt [pri]; 2326 w_->pending = ++pendingcnt [pri];
829 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2327 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
830 pendings [pri][w_->pending - 1].w = w_; 2328 pendings [pri][w_->pending - 1].w = w_;
831 pendings [pri][w_->pending - 1].events = revents; 2329 pendings [pri][w_->pending - 1].events = revents;
832 } 2330 }
2331
2332 pendingpri = NUMPRI - 1;
833} 2333}
834 2334
835inline_speed void 2335inline_speed void
836feed_reverse (EV_P_ W w) 2336feed_reverse (EV_P_ W w)
837{ 2337{
838 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2338 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
839 rfeeds [rfeedcnt++] = w; 2339 rfeeds [rfeedcnt++] = w;
840} 2340}
841 2341
842inline_size void 2342inline_size void
843feed_reverse_done (EV_P_ int revents) 2343feed_reverse_done (EV_P_ int revents)
… …
857} 2357}
858 2358
859/*****************************************************************************/ 2359/*****************************************************************************/
860 2360
861inline_speed void 2361inline_speed void
862fd_event_nc (EV_P_ int fd, int revents) 2362fd_event_nocheck (EV_P_ int fd, int revents)
863{ 2363{
864 ANFD *anfd = anfds + fd; 2364 ANFD *anfd = anfds + fd;
865 ev_io *w; 2365 ev_io *w;
866 2366
867 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2367 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
878inline_speed void 2378inline_speed void
879fd_event (EV_P_ int fd, int revents) 2379fd_event (EV_P_ int fd, int revents)
880{ 2380{
881 ANFD *anfd = anfds + fd; 2381 ANFD *anfd = anfds + fd;
882 2382
883 if (expect_true (!anfd->reify)) 2383 if (ecb_expect_true (!anfd->reify))
884 fd_event_nc (EV_A_ fd, revents); 2384 fd_event_nocheck (EV_A_ fd, revents);
885} 2385}
886 2386
887void 2387void
888ev_feed_fd_event (EV_P_ int fd, int revents) 2388ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
889{ 2389{
890 if (fd >= 0 && fd < anfdmax) 2390 if (fd >= 0 && fd < anfdmax)
891 fd_event_nc (EV_A_ fd, revents); 2391 fd_event_nocheck (EV_A_ fd, revents);
892} 2392}
893 2393
894/* make sure the external fd watch events are in-sync */ 2394/* make sure the external fd watch events are in-sync */
895/* with the kernel/libev internal state */ 2395/* with the kernel/libev internal state */
896inline_size void 2396inline_size void
897fd_reify (EV_P) 2397fd_reify (EV_P)
898{ 2398{
899 int i; 2399 int i;
900 2400
2401 /* most backends do not modify the fdchanges list in backend_modfiy.
2402 * except io_uring, which has fixed-size buffers which might force us
2403 * to handle events in backend_modify, causing fdchanges to be amended,
2404 * which could result in an endless loop.
2405 * to avoid this, we do not dynamically handle fds that were added
2406 * during fd_reify. that means that for those backends, fdchangecnt
2407 * might be non-zero during poll, which must cause them to not block.
2408 * to not put too much of a burden on other backends, this detail
2409 * needs to be handled in the backend.
2410 */
2411 int changecnt = fdchangecnt;
2412
2413#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
901 for (i = 0; i < fdchangecnt; ++i) 2414 for (i = 0; i < changecnt; ++i)
2415 {
2416 int fd = fdchanges [i];
2417 ANFD *anfd = anfds + fd;
2418
2419 if (anfd->reify & EV__IOFDSET && anfd->head)
2420 {
2421 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
2422
2423 if (handle != anfd->handle)
2424 {
2425 unsigned long arg;
2426
2427 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
2428
2429 /* handle changed, but fd didn't - we need to do it in two steps */
2430 backend_modify (EV_A_ fd, anfd->events, 0);
2431 anfd->events = 0;
2432 anfd->handle = handle;
2433 }
2434 }
2435 }
2436#endif
2437
2438 for (i = 0; i < changecnt; ++i)
902 { 2439 {
903 int fd = fdchanges [i]; 2440 int fd = fdchanges [i];
904 ANFD *anfd = anfds + fd; 2441 ANFD *anfd = anfds + fd;
905 ev_io *w; 2442 ev_io *w;
906 2443
907 unsigned char events = 0; 2444 unsigned char o_events = anfd->events;
2445 unsigned char o_reify = anfd->reify;
908 2446
909 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2447 anfd->reify = 0;
910 events |= (unsigned char)w->events;
911 2448
912#if EV_SELECT_IS_WINSOCKET 2449 /*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
913 if (events)
914 { 2450 {
915 unsigned long arg; 2451 anfd->events = 0;
916 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 2452
917 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 2453 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
2454 anfd->events |= (unsigned char)w->events;
2455
2456 if (o_events != anfd->events)
2457 o_reify = EV__IOFDSET; /* actually |= */
918 } 2458 }
919#endif
920 2459
921 { 2460 if (o_reify & EV__IOFDSET)
922 unsigned char o_events = anfd->events;
923 unsigned char o_reify = anfd->reify;
924
925 anfd->reify = 0;
926 anfd->events = events;
927
928 if (o_events != events || o_reify & EV__IOFDSET)
929 backend_modify (EV_A_ fd, o_events, events); 2461 backend_modify (EV_A_ fd, o_events, anfd->events);
930 } 2462 }
931 }
932 2463
2464 /* normally, fdchangecnt hasn't changed. if it has, then new fds have been added.
2465 * this is a rare case (see beginning comment in this function), so we copy them to the
2466 * front and hope the backend handles this case.
2467 */
2468 if (ecb_expect_false (fdchangecnt != changecnt))
2469 memmove (fdchanges, fdchanges + changecnt, (fdchangecnt - changecnt) * sizeof (*fdchanges));
2470
933 fdchangecnt = 0; 2471 fdchangecnt -= changecnt;
934} 2472}
935 2473
936/* something about the given fd changed */ 2474/* something about the given fd changed */
937inline_size void 2475inline_size
2476void
938fd_change (EV_P_ int fd, int flags) 2477fd_change (EV_P_ int fd, int flags)
939{ 2478{
940 unsigned char reify = anfds [fd].reify; 2479 unsigned char reify = anfds [fd].reify;
941 anfds [fd].reify |= flags; 2480 anfds [fd].reify = reify | flags;
942 2481
943 if (expect_true (!reify)) 2482 if (ecb_expect_true (!reify))
944 { 2483 {
945 ++fdchangecnt; 2484 ++fdchangecnt;
946 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2485 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
947 fdchanges [fdchangecnt - 1] = fd; 2486 fdchanges [fdchangecnt - 1] = fd;
948 } 2487 }
949} 2488}
950 2489
951/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2490/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
952inline_speed void 2491inline_speed ecb_cold void
953fd_kill (EV_P_ int fd) 2492fd_kill (EV_P_ int fd)
954{ 2493{
955 ev_io *w; 2494 ev_io *w;
956 2495
957 while ((w = (ev_io *)anfds [fd].head)) 2496 while ((w = (ev_io *)anfds [fd].head))
… …
959 ev_io_stop (EV_A_ w); 2498 ev_io_stop (EV_A_ w);
960 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2499 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
961 } 2500 }
962} 2501}
963 2502
964/* check whether the given fd is atcually valid, for error recovery */ 2503/* check whether the given fd is actually valid, for error recovery */
965inline_size int 2504inline_size ecb_cold int
966fd_valid (int fd) 2505fd_valid (int fd)
967{ 2506{
968#ifdef _WIN32 2507#ifdef _WIN32
969 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2508 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
970#else 2509#else
971 return fcntl (fd, F_GETFD) != -1; 2510 return fcntl (fd, F_GETFD) != -1;
972#endif 2511#endif
973} 2512}
974 2513
975/* called on EBADF to verify fds */ 2514/* called on EBADF to verify fds */
976static void noinline 2515ecb_noinline ecb_cold
2516static void
977fd_ebadf (EV_P) 2517fd_ebadf (EV_P)
978{ 2518{
979 int fd; 2519 int fd;
980 2520
981 for (fd = 0; fd < anfdmax; ++fd) 2521 for (fd = 0; fd < anfdmax; ++fd)
… …
983 if (!fd_valid (fd) && errno == EBADF) 2523 if (!fd_valid (fd) && errno == EBADF)
984 fd_kill (EV_A_ fd); 2524 fd_kill (EV_A_ fd);
985} 2525}
986 2526
987/* called on ENOMEM in select/poll to kill some fds and retry */ 2527/* called on ENOMEM in select/poll to kill some fds and retry */
988static void noinline 2528ecb_noinline ecb_cold
2529static void
989fd_enomem (EV_P) 2530fd_enomem (EV_P)
990{ 2531{
991 int fd; 2532 int fd;
992 2533
993 for (fd = anfdmax; fd--; ) 2534 for (fd = anfdmax; fd--; )
… …
997 break; 2538 break;
998 } 2539 }
999} 2540}
1000 2541
1001/* usually called after fork if backend needs to re-arm all fds from scratch */ 2542/* usually called after fork if backend needs to re-arm all fds from scratch */
1002static void noinline 2543ecb_noinline
2544static void
1003fd_rearm_all (EV_P) 2545fd_rearm_all (EV_P)
1004{ 2546{
1005 int fd; 2547 int fd;
1006 2548
1007 for (fd = 0; fd < anfdmax; ++fd) 2549 for (fd = 0; fd < anfdmax; ++fd)
… …
1011 anfds [fd].emask = 0; 2553 anfds [fd].emask = 0;
1012 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); 2554 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
1013 } 2555 }
1014} 2556}
1015 2557
2558/* used to prepare libev internal fd's */
2559/* this is not fork-safe */
2560inline_speed void
2561fd_intern (int fd)
2562{
2563#ifdef _WIN32
2564 unsigned long arg = 1;
2565 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
2566#else
2567 fcntl (fd, F_SETFD, FD_CLOEXEC);
2568 fcntl (fd, F_SETFL, O_NONBLOCK);
2569#endif
2570}
2571
1016/*****************************************************************************/ 2572/*****************************************************************************/
1017 2573
1018/* 2574/*
1019 * the heap functions want a real array index. array index 0 uis guaranteed to not 2575 * the heap functions want a real array index. array index 0 is guaranteed to not
1020 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 2576 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
1021 * the branching factor of the d-tree. 2577 * the branching factor of the d-tree.
1022 */ 2578 */
1023 2579
1024/* 2580/*
… …
1046 ev_tstamp minat; 2602 ev_tstamp minat;
1047 ANHE *minpos; 2603 ANHE *minpos;
1048 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; 2604 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
1049 2605
1050 /* find minimum child */ 2606 /* find minimum child */
1051 if (expect_true (pos + DHEAP - 1 < E)) 2607 if (ecb_expect_true (pos + DHEAP - 1 < E))
1052 { 2608 {
1053 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2609 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1054 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2610 if ( minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1055 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2611 if ( minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1056 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2612 if ( minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1057 } 2613 }
1058 else if (pos < E) 2614 else if (pos < E)
1059 { 2615 {
1060 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2616 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1061 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2617 if (pos + 1 < E && minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1062 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2618 if (pos + 2 < E && minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1063 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2619 if (pos + 3 < E && minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1064 } 2620 }
1065 else 2621 else
1066 break; 2622 break;
1067 2623
1068 if (ANHE_at (he) <= minat) 2624 if (ANHE_at (he) <= minat)
… …
1076 2632
1077 heap [k] = he; 2633 heap [k] = he;
1078 ev_active (ANHE_w (he)) = k; 2634 ev_active (ANHE_w (he)) = k;
1079} 2635}
1080 2636
1081#else /* 4HEAP */ 2637#else /* not 4HEAP */
1082 2638
1083#define HEAP0 1 2639#define HEAP0 1
1084#define HPARENT(k) ((k) >> 1) 2640#define HPARENT(k) ((k) >> 1)
1085#define UPHEAP_DONE(p,k) (!(p)) 2641#define UPHEAP_DONE(p,k) (!(p))
1086 2642
… …
1158 upheap (heap, i + HEAP0); 2714 upheap (heap, i + HEAP0);
1159} 2715}
1160 2716
1161/*****************************************************************************/ 2717/*****************************************************************************/
1162 2718
1163/* associate signal watchers to a signal signal */ 2719/* associate signal watchers to a signal */
1164typedef struct 2720typedef struct
1165{ 2721{
1166 EV_ATOMIC_T pending; 2722 EV_ATOMIC_T pending;
1167#if EV_MULTIPLICITY 2723#if EV_MULTIPLICITY
1168 EV_P; 2724 EV_P;
… …
1172 2728
1173static ANSIG signals [EV_NSIG - 1]; 2729static ANSIG signals [EV_NSIG - 1];
1174 2730
1175/*****************************************************************************/ 2731/*****************************************************************************/
1176 2732
1177/* used to prepare libev internal fd's */ 2733#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1178/* this is not fork-safe */ 2734
2735ecb_noinline ecb_cold
2736static void
2737evpipe_init (EV_P)
2738{
2739 if (!ev_is_active (&pipe_w))
2740 {
2741 int fds [2];
2742
2743# if EV_USE_EVENTFD
2744 fds [0] = -1;
2745 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
2746 if (fds [1] < 0 && errno == EINVAL)
2747 fds [1] = eventfd (0, 0);
2748
2749 if (fds [1] < 0)
2750# endif
2751 {
2752 while (pipe (fds))
2753 ev_syserr ("(libev) error creating signal/async pipe");
2754
2755 fd_intern (fds [0]);
2756 }
2757
2758 evpipe [0] = fds [0];
2759
2760 if (evpipe [1] < 0)
2761 evpipe [1] = fds [1]; /* first call, set write fd */
2762 else
2763 {
2764 /* on subsequent calls, do not change evpipe [1] */
2765 /* so that evpipe_write can always rely on its value. */
2766 /* this branch does not do anything sensible on windows, */
2767 /* so must not be executed on windows */
2768
2769 dup2 (fds [1], evpipe [1]);
2770 close (fds [1]);
2771 }
2772
2773 fd_intern (evpipe [1]);
2774
2775 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2776 ev_io_start (EV_A_ &pipe_w);
2777 ev_unref (EV_A); /* watcher should not keep loop alive */
2778 }
2779}
2780
1179inline_speed void 2781inline_speed void
1180fd_intern (int fd) 2782evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1181{ 2783{
1182#ifdef _WIN32 2784 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1183 unsigned long arg = 1;
1184 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1185#else
1186 fcntl (fd, F_SETFD, FD_CLOEXEC);
1187 fcntl (fd, F_SETFL, O_NONBLOCK);
1188#endif
1189}
1190 2785
1191static void noinline 2786 if (ecb_expect_true (*flag))
1192evpipe_init (EV_P) 2787 return;
1193{ 2788
1194 if (!ev_is_active (&pipe_w)) 2789 *flag = 1;
2790 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2791
2792 pipe_write_skipped = 1;
2793
2794 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2795
2796 if (pipe_write_wanted)
1195 { 2797 {
2798 int old_errno;
2799
2800 pipe_write_skipped = 0;
2801 ECB_MEMORY_FENCE_RELEASE;
2802
2803 old_errno = errno; /* save errno because write will clobber it */
2804
1196#if EV_USE_EVENTFD 2805#if EV_USE_EVENTFD
1197 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2806 if (evpipe [0] < 0)
1198 if (evfd < 0 && errno == EINVAL)
1199 evfd = eventfd (0, 0);
1200
1201 if (evfd >= 0)
1202 { 2807 {
1203 evpipe [0] = -1; 2808 uint64_t counter = 1;
1204 fd_intern (evfd); /* doing it twice doesn't hurt */ 2809 write (evpipe [1], &counter, sizeof (uint64_t));
1205 ev_io_set (&pipe_w, evfd, EV_READ);
1206 } 2810 }
1207 else 2811 else
1208#endif 2812#endif
1209 { 2813 {
1210 while (pipe (evpipe)) 2814#ifdef _WIN32
1211 ev_syserr ("(libev) error creating signal/async pipe"); 2815 WSABUF buf;
1212 2816 DWORD sent;
1213 fd_intern (evpipe [0]); 2817 buf.buf = (char *)&buf;
1214 fd_intern (evpipe [1]); 2818 buf.len = 1;
1215 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2819 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2820#else
2821 write (evpipe [1], &(evpipe [1]), 1);
2822#endif
1216 } 2823 }
1217
1218 ev_io_start (EV_A_ &pipe_w);
1219 ev_unref (EV_A); /* watcher should not keep loop alive */
1220 }
1221}
1222
1223inline_size void
1224evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1225{
1226 if (!*flag)
1227 {
1228 int old_errno = errno; /* save errno because write might clobber it */
1229
1230 *flag = 1;
1231
1232#if EV_USE_EVENTFD
1233 if (evfd >= 0)
1234 {
1235 uint64_t counter = 1;
1236 write (evfd, &counter, sizeof (uint64_t));
1237 }
1238 else
1239#endif
1240 write (evpipe [1], &old_errno, 1);
1241 2824
1242 errno = old_errno; 2825 errno = old_errno;
1243 } 2826 }
1244} 2827}
1245 2828
… …
1248static void 2831static void
1249pipecb (EV_P_ ev_io *iow, int revents) 2832pipecb (EV_P_ ev_io *iow, int revents)
1250{ 2833{
1251 int i; 2834 int i;
1252 2835
2836 if (revents & EV_READ)
2837 {
1253#if EV_USE_EVENTFD 2838#if EV_USE_EVENTFD
1254 if (evfd >= 0) 2839 if (evpipe [0] < 0)
1255 { 2840 {
1256 uint64_t counter; 2841 uint64_t counter;
1257 read (evfd, &counter, sizeof (uint64_t)); 2842 read (evpipe [1], &counter, sizeof (uint64_t));
1258 } 2843 }
1259 else 2844 else
1260#endif 2845#endif
1261 { 2846 {
1262 char dummy; 2847 char dummy[4];
2848#ifdef _WIN32
2849 WSABUF buf;
2850 DWORD recvd;
2851 DWORD flags = 0;
2852 buf.buf = dummy;
2853 buf.len = sizeof (dummy);
2854 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2855#else
1263 read (evpipe [0], &dummy, 1); 2856 read (evpipe [0], &dummy, sizeof (dummy));
2857#endif
2858 }
1264 } 2859 }
1265 2860
2861 pipe_write_skipped = 0;
2862
2863 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2864
2865#if EV_SIGNAL_ENABLE
1266 if (sig_pending) 2866 if (sig_pending)
1267 { 2867 {
1268 sig_pending = 0; 2868 sig_pending = 0;
1269 2869
2870 ECB_MEMORY_FENCE;
2871
1270 for (i = EV_NSIG - 1; i--; ) 2872 for (i = EV_NSIG - 1; i--; )
1271 if (expect_false (signals [i].pending)) 2873 if (ecb_expect_false (signals [i].pending))
1272 ev_feed_signal_event (EV_A_ i + 1); 2874 ev_feed_signal_event (EV_A_ i + 1);
1273 } 2875 }
2876#endif
1274 2877
1275#if EV_ASYNC_ENABLE 2878#if EV_ASYNC_ENABLE
1276 if (async_pending) 2879 if (async_pending)
1277 { 2880 {
1278 async_pending = 0; 2881 async_pending = 0;
2882
2883 ECB_MEMORY_FENCE;
1279 2884
1280 for (i = asynccnt; i--; ) 2885 for (i = asynccnt; i--; )
1281 if (asyncs [i]->sent) 2886 if (asyncs [i]->sent)
1282 { 2887 {
1283 asyncs [i]->sent = 0; 2888 asyncs [i]->sent = 0;
2889 ECB_MEMORY_FENCE_RELEASE;
1284 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2890 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1285 } 2891 }
1286 } 2892 }
1287#endif 2893#endif
1288} 2894}
1289 2895
1290/*****************************************************************************/ 2896/*****************************************************************************/
1291 2897
2898void
2899ev_feed_signal (int signum) EV_NOEXCEPT
2900{
2901#if EV_MULTIPLICITY
2902 EV_P;
2903 ECB_MEMORY_FENCE_ACQUIRE;
2904 EV_A = signals [signum - 1].loop;
2905
2906 if (!EV_A)
2907 return;
2908#endif
2909
2910 signals [signum - 1].pending = 1;
2911 evpipe_write (EV_A_ &sig_pending);
2912}
2913
1292static void 2914static void
1293ev_sighandler (int signum) 2915ev_sighandler (int signum)
1294{ 2916{
1295#if EV_MULTIPLICITY
1296 EV_P = signals [signum - 1].loop;
1297#endif
1298
1299#ifdef _WIN32 2917#ifdef _WIN32
1300 signal (signum, ev_sighandler); 2918 signal (signum, ev_sighandler);
1301#endif 2919#endif
1302 2920
1303 signals [signum - 1].pending = 1; 2921 ev_feed_signal (signum);
1304 evpipe_write (EV_A_ &sig_pending);
1305} 2922}
1306 2923
1307void noinline 2924ecb_noinline
2925void
1308ev_feed_signal_event (EV_P_ int signum) 2926ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
1309{ 2927{
1310 WL w; 2928 WL w;
1311 2929
1312 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2930 if (ecb_expect_false (signum <= 0 || signum >= EV_NSIG))
1313 return; 2931 return;
1314 2932
1315 --signum; 2933 --signum;
1316 2934
1317#if EV_MULTIPLICITY 2935#if EV_MULTIPLICITY
1318 /* it is permissible to try to feed a signal to the wrong loop */ 2936 /* it is permissible to try to feed a signal to the wrong loop */
1319 /* or, likely more useful, feeding a signal nobody is waiting for */ 2937 /* or, likely more useful, feeding a signal nobody is waiting for */
1320 2938
1321 if (expect_false (signals [signum].loop != EV_A)) 2939 if (ecb_expect_false (signals [signum].loop != EV_A))
1322 return; 2940 return;
1323#endif 2941#endif
1324 2942
1325 signals [signum].pending = 0; 2943 signals [signum].pending = 0;
2944 ECB_MEMORY_FENCE_RELEASE;
1326 2945
1327 for (w = signals [signum].head; w; w = w->next) 2946 for (w = signals [signum].head; w; w = w->next)
1328 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2947 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1329} 2948}
1330 2949
… …
1346 break; 2965 break;
1347 } 2966 }
1348} 2967}
1349#endif 2968#endif
1350 2969
2970#endif
2971
1351/*****************************************************************************/ 2972/*****************************************************************************/
1352 2973
2974#if EV_CHILD_ENABLE
1353static WL childs [EV_PID_HASHSIZE]; 2975static WL childs [EV_PID_HASHSIZE];
1354
1355#ifndef _WIN32
1356 2976
1357static ev_signal childev; 2977static ev_signal childev;
1358 2978
1359#ifndef WIFCONTINUED 2979#ifndef WIFCONTINUED
1360# define WIFCONTINUED(status) 0 2980# define WIFCONTINUED(status) 0
… …
1365child_reap (EV_P_ int chain, int pid, int status) 2985child_reap (EV_P_ int chain, int pid, int status)
1366{ 2986{
1367 ev_child *w; 2987 ev_child *w;
1368 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2988 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1369 2989
1370 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2990 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1371 { 2991 {
1372 if ((w->pid == pid || !w->pid) 2992 if ((w->pid == pid || !w->pid)
1373 && (!traced || (w->flags & 1))) 2993 && (!traced || (w->flags & 1)))
1374 { 2994 {
1375 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2995 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1400 /* make sure we are called again until all children have been reaped */ 3020 /* make sure we are called again until all children have been reaped */
1401 /* we need to do it this way so that the callback gets called before we continue */ 3021 /* we need to do it this way so that the callback gets called before we continue */
1402 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 3022 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1403 3023
1404 child_reap (EV_A_ pid, pid, status); 3024 child_reap (EV_A_ pid, pid, status);
1405 if (EV_PID_HASHSIZE > 1) 3025 if ((EV_PID_HASHSIZE) > 1)
1406 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 3026 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1407} 3027}
1408 3028
1409#endif 3029#endif
1410 3030
1411/*****************************************************************************/ 3031/*****************************************************************************/
1412 3032
3033#if EV_USE_TIMERFD
3034
3035static void periodics_reschedule (EV_P);
3036
3037static void
3038timerfdcb (EV_P_ ev_io *iow, int revents)
3039{
3040 struct itimerspec its = { 0 };
3041
3042 its.it_value.tv_sec = ev_rt_now + (int)MAX_BLOCKTIME2;
3043 timerfd_settime (timerfd, TFD_TIMER_ABSTIME | TFD_TIMER_CANCEL_ON_SET, &its, 0);
3044
3045 ev_rt_now = ev_time ();
3046 /* periodics_reschedule only needs ev_rt_now */
3047 /* but maybe in the future we want the full treatment. */
3048 /*
3049 now_floor = EV_TS_CONST (0.);
3050 time_update (EV_A_ EV_TSTAMP_HUGE);
3051 */
3052#if EV_PERIODIC_ENABLE
3053 periodics_reschedule (EV_A);
3054#endif
3055}
3056
3057ecb_noinline ecb_cold
3058static void
3059evtimerfd_init (EV_P)
3060{
3061 if (!ev_is_active (&timerfd_w))
3062 {
3063 timerfd = timerfd_create (CLOCK_REALTIME, TFD_NONBLOCK | TFD_CLOEXEC);
3064
3065 if (timerfd >= 0)
3066 {
3067 fd_intern (timerfd); /* just to be sure */
3068
3069 ev_io_init (&timerfd_w, timerfdcb, timerfd, EV_READ);
3070 ev_set_priority (&timerfd_w, EV_MINPRI);
3071 ev_io_start (EV_A_ &timerfd_w);
3072 ev_unref (EV_A); /* watcher should not keep loop alive */
3073
3074 /* (re-) arm timer */
3075 timerfdcb (EV_A_ 0, 0);
3076 }
3077 }
3078}
3079
3080#endif
3081
3082/*****************************************************************************/
3083
3084#if EV_USE_IOCP
3085# include "ev_iocp.c"
3086#endif
1413#if EV_USE_PORT 3087#if EV_USE_PORT
1414# include "ev_port.c" 3088# include "ev_port.c"
1415#endif 3089#endif
1416#if EV_USE_KQUEUE 3090#if EV_USE_KQUEUE
1417# include "ev_kqueue.c" 3091# include "ev_kqueue.c"
1418#endif 3092#endif
1419#if EV_USE_EPOLL 3093#if EV_USE_EPOLL
1420# include "ev_epoll.c" 3094# include "ev_epoll.c"
1421#endif 3095#endif
3096#if EV_USE_LINUXAIO
3097# include "ev_linuxaio.c"
3098#endif
3099#if EV_USE_IOURING
3100# include "ev_iouring.c"
3101#endif
1422#if EV_USE_POLL 3102#if EV_USE_POLL
1423# include "ev_poll.c" 3103# include "ev_poll.c"
1424#endif 3104#endif
1425#if EV_USE_SELECT 3105#if EV_USE_SELECT
1426# include "ev_select.c" 3106# include "ev_select.c"
1427#endif 3107#endif
1428 3108
1429int 3109ecb_cold int
1430ev_version_major (void) 3110ev_version_major (void) EV_NOEXCEPT
1431{ 3111{
1432 return EV_VERSION_MAJOR; 3112 return EV_VERSION_MAJOR;
1433} 3113}
1434 3114
1435int 3115ecb_cold int
1436ev_version_minor (void) 3116ev_version_minor (void) EV_NOEXCEPT
1437{ 3117{
1438 return EV_VERSION_MINOR; 3118 return EV_VERSION_MINOR;
1439} 3119}
1440 3120
1441/* return true if we are running with elevated privileges and should ignore env variables */ 3121/* return true if we are running with elevated privileges and should ignore env variables */
1442int inline_size 3122inline_size ecb_cold int
1443enable_secure (void) 3123enable_secure (void)
1444{ 3124{
1445#ifdef _WIN32 3125#ifdef _WIN32
1446 return 0; 3126 return 0;
1447#else 3127#else
1448 return getuid () != geteuid () 3128 return getuid () != geteuid ()
1449 || getgid () != getegid (); 3129 || getgid () != getegid ();
1450#endif 3130#endif
1451} 3131}
1452 3132
3133ecb_cold
1453unsigned int 3134unsigned int
1454ev_supported_backends (void) 3135ev_supported_backends (void) EV_NOEXCEPT
1455{ 3136{
1456 unsigned int flags = 0; 3137 unsigned int flags = 0;
1457 3138
1458 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 3139 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1459 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 3140 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
1460 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 3141 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
1461 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 3142 if (EV_USE_LINUXAIO ) flags |= EVBACKEND_LINUXAIO;
1462 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 3143 if (EV_USE_IOURING && ev_linux_version () >= 0x050601) flags |= EVBACKEND_IOURING; /* 5.6.1+ */
1463 3144 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
3145 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
3146
1464 return flags; 3147 return flags;
1465} 3148}
1466 3149
3150ecb_cold
1467unsigned int 3151unsigned int
1468ev_recommended_backends (void) 3152ev_recommended_backends (void) EV_NOEXCEPT
1469{ 3153{
1470 unsigned int flags = ev_supported_backends (); 3154 unsigned int flags = ev_supported_backends ();
1471 3155
1472#ifndef __NetBSD__ 3156#ifndef __NetBSD__
1473 /* kqueue is borked on everything but netbsd apparently */ 3157 /* kqueue is borked on everything but netbsd apparently */
… …
1477#ifdef __APPLE__ 3161#ifdef __APPLE__
1478 /* only select works correctly on that "unix-certified" platform */ 3162 /* only select works correctly on that "unix-certified" platform */
1479 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 3163 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1480 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 3164 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1481#endif 3165#endif
3166#ifdef __FreeBSD__
3167 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
3168#endif
3169
3170 /* TODO: linuxaio is very experimental */
3171#if !EV_RECOMMEND_LINUXAIO
3172 flags &= ~EVBACKEND_LINUXAIO;
3173#endif
3174 /* TODO: iouring is super experimental */
3175#if !EV_RECOMMEND_IOURING
3176 flags &= ~EVBACKEND_IOURING;
3177#endif
1482 3178
1483 return flags; 3179 return flags;
1484} 3180}
1485 3181
3182ecb_cold
1486unsigned int 3183unsigned int
1487ev_embeddable_backends (void) 3184ev_embeddable_backends (void) EV_NOEXCEPT
1488{ 3185{
1489 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 3186 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT | EVBACKEND_IOURING;
1490 3187
1491 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 3188 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1492 /* please fix it and tell me how to detect the fix */ 3189 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1493 flags &= ~EVBACKEND_EPOLL; 3190 flags &= ~EVBACKEND_EPOLL;
3191
3192 /* EVBACKEND_LINUXAIO is theoretically embeddable, but suffers from a performance overhead */
1494 3193
1495 return flags; 3194 return flags;
1496} 3195}
1497 3196
1498unsigned int 3197unsigned int
1499ev_backend (EV_P) 3198ev_backend (EV_P) EV_NOEXCEPT
1500{ 3199{
1501 return backend; 3200 return backend;
1502} 3201}
1503 3202
1504#if EV_MINIMAL < 2 3203#if EV_FEATURE_API
1505unsigned int 3204unsigned int
1506ev_loop_count (EV_P) 3205ev_iteration (EV_P) EV_NOEXCEPT
1507{ 3206{
1508 return loop_count; 3207 return loop_count;
1509} 3208}
1510 3209
1511unsigned int 3210unsigned int
1512ev_loop_depth (EV_P) 3211ev_depth (EV_P) EV_NOEXCEPT
1513{ 3212{
1514 return loop_depth; 3213 return loop_depth;
1515} 3214}
1516 3215
1517void 3216void
1518ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 3217ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1519{ 3218{
1520 io_blocktime = interval; 3219 io_blocktime = interval;
1521} 3220}
1522 3221
1523void 3222void
1524ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 3223ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1525{ 3224{
1526 timeout_blocktime = interval; 3225 timeout_blocktime = interval;
1527} 3226}
1528 3227
1529void 3228void
1530ev_set_userdata (EV_P_ void *data) 3229ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
1531{ 3230{
1532 userdata = data; 3231 userdata = data;
1533} 3232}
1534 3233
1535void * 3234void *
1536ev_userdata (EV_P) 3235ev_userdata (EV_P) EV_NOEXCEPT
1537{ 3236{
1538 return userdata; 3237 return userdata;
1539} 3238}
1540 3239
3240void
1541void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 3241ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
1542{ 3242{
1543 invoke_cb = invoke_pending_cb; 3243 invoke_cb = invoke_pending_cb;
1544} 3244}
1545 3245
3246void
1546void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 3247ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
1547{ 3248{
1548 release_cb = release; 3249 release_cb = release;
1549 acquire_cb = acquire; 3250 acquire_cb = acquire;
1550} 3251}
1551#endif 3252#endif
1552 3253
1553/* initialise a loop structure, must be zero-initialised */ 3254/* initialise a loop structure, must be zero-initialised */
1554static void noinline 3255ecb_noinline ecb_cold
3256static void
1555loop_init (EV_P_ unsigned int flags) 3257loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
1556{ 3258{
1557 if (!backend) 3259 if (!backend)
1558 { 3260 {
3261 origflags = flags;
3262
1559#if EV_USE_REALTIME 3263#if EV_USE_REALTIME
1560 if (!have_realtime) 3264 if (!have_realtime)
1561 { 3265 {
1562 struct timespec ts; 3266 struct timespec ts;
1563 3267
… …
1585 if (!(flags & EVFLAG_NOENV) 3289 if (!(flags & EVFLAG_NOENV)
1586 && !enable_secure () 3290 && !enable_secure ()
1587 && getenv ("LIBEV_FLAGS")) 3291 && getenv ("LIBEV_FLAGS"))
1588 flags = atoi (getenv ("LIBEV_FLAGS")); 3292 flags = atoi (getenv ("LIBEV_FLAGS"));
1589 3293
1590 ev_rt_now = ev_time (); 3294 ev_rt_now = ev_time ();
1591 mn_now = get_clock (); 3295 mn_now = get_clock ();
1592 now_floor = mn_now; 3296 now_floor = mn_now;
1593 rtmn_diff = ev_rt_now - mn_now; 3297 rtmn_diff = ev_rt_now - mn_now;
1594#if EV_MINIMAL < 2 3298#if EV_FEATURE_API
1595 invoke_cb = ev_invoke_pending; 3299 invoke_cb = ev_invoke_pending;
1596#endif 3300#endif
1597 3301
1598 io_blocktime = 0.; 3302 io_blocktime = 0.;
1599 timeout_blocktime = 0.; 3303 timeout_blocktime = 0.;
1600 backend = 0; 3304 backend = 0;
1601 backend_fd = -1; 3305 backend_fd = -1;
1602 sig_pending = 0; 3306 sig_pending = 0;
1603#if EV_ASYNC_ENABLE 3307#if EV_ASYNC_ENABLE
1604 async_pending = 0; 3308 async_pending = 0;
1605#endif 3309#endif
3310 pipe_write_skipped = 0;
3311 pipe_write_wanted = 0;
3312 evpipe [0] = -1;
3313 evpipe [1] = -1;
1606#if EV_USE_INOTIFY 3314#if EV_USE_INOTIFY
1607 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 3315 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1608#endif 3316#endif
1609#if EV_USE_SIGNALFD 3317#if EV_USE_SIGNALFD
1610 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 3318 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1611#endif 3319#endif
3320#if EV_USE_TIMERFD
3321 timerfd = flags & EVFLAG_NOTIMERFD ? -1 : -2;
3322#endif
1612 3323
1613 if (!(flags & 0x0000ffffU)) 3324 if (!(flags & EVBACKEND_MASK))
1614 flags |= ev_recommended_backends (); 3325 flags |= ev_recommended_backends ();
1615 3326
3327#if EV_USE_IOCP
3328 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
3329#endif
1616#if EV_USE_PORT 3330#if EV_USE_PORT
1617 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 3331 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1618#endif 3332#endif
1619#if EV_USE_KQUEUE 3333#if EV_USE_KQUEUE
1620 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 3334 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
3335#endif
3336#if EV_USE_IOURING
3337 if (!backend && (flags & EVBACKEND_IOURING )) backend = iouring_init (EV_A_ flags);
3338#endif
3339#if EV_USE_LINUXAIO
3340 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
1621#endif 3341#endif
1622#if EV_USE_EPOLL 3342#if EV_USE_EPOLL
1623 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 3343 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
1624#endif 3344#endif
1625#if EV_USE_POLL 3345#if EV_USE_POLL
1626 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 3346 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
1627#endif 3347#endif
1628#if EV_USE_SELECT 3348#if EV_USE_SELECT
1629 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 3349 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
1630#endif 3350#endif
1631 3351
1632 ev_prepare_init (&pending_w, pendingcb); 3352 ev_prepare_init (&pending_w, pendingcb);
1633 3353
3354#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1634 ev_init (&pipe_w, pipecb); 3355 ev_init (&pipe_w, pipecb);
1635 ev_set_priority (&pipe_w, EV_MAXPRI); 3356 ev_set_priority (&pipe_w, EV_MAXPRI);
3357#endif
1636 } 3358 }
1637} 3359}
1638 3360
1639/* free up a loop structure */ 3361/* free up a loop structure */
1640static void noinline 3362ecb_cold
3363void
1641loop_destroy (EV_P) 3364ev_loop_destroy (EV_P)
1642{ 3365{
1643 int i; 3366 int i;
3367
3368#if EV_MULTIPLICITY
3369 /* mimic free (0) */
3370 if (!EV_A)
3371 return;
3372#endif
3373
3374#if EV_CLEANUP_ENABLE
3375 /* queue cleanup watchers (and execute them) */
3376 if (ecb_expect_false (cleanupcnt))
3377 {
3378 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
3379 EV_INVOKE_PENDING;
3380 }
3381#endif
3382
3383#if EV_CHILD_ENABLE
3384 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
3385 {
3386 ev_ref (EV_A); /* child watcher */
3387 ev_signal_stop (EV_A_ &childev);
3388 }
3389#endif
1644 3390
1645 if (ev_is_active (&pipe_w)) 3391 if (ev_is_active (&pipe_w))
1646 { 3392 {
1647 /*ev_ref (EV_A);*/ 3393 /*ev_ref (EV_A);*/
1648 /*ev_io_stop (EV_A_ &pipe_w);*/ 3394 /*ev_io_stop (EV_A_ &pipe_w);*/
1649 3395
1650#if EV_USE_EVENTFD
1651 if (evfd >= 0)
1652 close (evfd);
1653#endif
1654
1655 if (evpipe [0] >= 0)
1656 {
1657 EV_WIN32_CLOSE_FD (evpipe [0]); 3396 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1658 EV_WIN32_CLOSE_FD (evpipe [1]); 3397 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1659 }
1660 } 3398 }
1661 3399
1662#if EV_USE_SIGNALFD 3400#if EV_USE_SIGNALFD
1663 if (ev_is_active (&sigfd_w)) 3401 if (ev_is_active (&sigfd_w))
1664 close (sigfd); 3402 close (sigfd);
1665#endif 3403#endif
1666 3404
3405#if EV_USE_TIMERFD
3406 if (ev_is_active (&timerfd_w))
3407 close (timerfd);
3408#endif
3409
1667#if EV_USE_INOTIFY 3410#if EV_USE_INOTIFY
1668 if (fs_fd >= 0) 3411 if (fs_fd >= 0)
1669 close (fs_fd); 3412 close (fs_fd);
1670#endif 3413#endif
1671 3414
1672 if (backend_fd >= 0) 3415 if (backend_fd >= 0)
1673 close (backend_fd); 3416 close (backend_fd);
1674 3417
3418#if EV_USE_IOCP
3419 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
3420#endif
1675#if EV_USE_PORT 3421#if EV_USE_PORT
1676 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3422 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1677#endif 3423#endif
1678#if EV_USE_KQUEUE 3424#if EV_USE_KQUEUE
1679 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3425 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
3426#endif
3427#if EV_USE_IOURING
3428 if (backend == EVBACKEND_IOURING ) iouring_destroy (EV_A);
3429#endif
3430#if EV_USE_LINUXAIO
3431 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
1680#endif 3432#endif
1681#if EV_USE_EPOLL 3433#if EV_USE_EPOLL
1682 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3434 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
1683#endif 3435#endif
1684#if EV_USE_POLL 3436#if EV_USE_POLL
1685 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3437 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
1686#endif 3438#endif
1687#if EV_USE_SELECT 3439#if EV_USE_SELECT
1688 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3440 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
1689#endif 3441#endif
1690 3442
1691 for (i = NUMPRI; i--; ) 3443 for (i = NUMPRI; i--; )
1692 { 3444 {
1693 array_free (pending, [i]); 3445 array_free (pending, [i]);
… …
1706 array_free (periodic, EMPTY); 3458 array_free (periodic, EMPTY);
1707#endif 3459#endif
1708#if EV_FORK_ENABLE 3460#if EV_FORK_ENABLE
1709 array_free (fork, EMPTY); 3461 array_free (fork, EMPTY);
1710#endif 3462#endif
3463#if EV_CLEANUP_ENABLE
3464 array_free (cleanup, EMPTY);
3465#endif
1711 array_free (prepare, EMPTY); 3466 array_free (prepare, EMPTY);
1712 array_free (check, EMPTY); 3467 array_free (check, EMPTY);
1713#if EV_ASYNC_ENABLE 3468#if EV_ASYNC_ENABLE
1714 array_free (async, EMPTY); 3469 array_free (async, EMPTY);
1715#endif 3470#endif
1716 3471
1717 backend = 0; 3472 backend = 0;
3473
3474#if EV_MULTIPLICITY
3475 if (ev_is_default_loop (EV_A))
3476#endif
3477 ev_default_loop_ptr = 0;
3478#if EV_MULTIPLICITY
3479 else
3480 ev_free (EV_A);
3481#endif
1718} 3482}
1719 3483
1720#if EV_USE_INOTIFY 3484#if EV_USE_INOTIFY
1721inline_size void infy_fork (EV_P); 3485inline_size void infy_fork (EV_P);
1722#endif 3486#endif
1723 3487
1724inline_size void 3488inline_size void
1725loop_fork (EV_P) 3489loop_fork (EV_P)
1726{ 3490{
1727#if EV_USE_PORT 3491#if EV_USE_PORT
1728 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3492 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1729#endif 3493#endif
1730#if EV_USE_KQUEUE 3494#if EV_USE_KQUEUE
1731 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 3495 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
3496#endif
3497#if EV_USE_IOURING
3498 if (backend == EVBACKEND_IOURING ) iouring_fork (EV_A);
3499#endif
3500#if EV_USE_LINUXAIO
3501 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
1732#endif 3502#endif
1733#if EV_USE_EPOLL 3503#if EV_USE_EPOLL
1734 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3504 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
1735#endif 3505#endif
1736#if EV_USE_INOTIFY 3506#if EV_USE_INOTIFY
1737 infy_fork (EV_A); 3507 infy_fork (EV_A);
1738#endif 3508#endif
1739 3509
3510 if (postfork != 2)
3511 {
3512 #if EV_USE_SIGNALFD
3513 /* surprisingly, nothing needs to be done for signalfd, accoridng to docs, it does the right thing on fork */
3514 #endif
3515
3516 #if EV_USE_TIMERFD
3517 if (ev_is_active (&timerfd_w))
3518 {
3519 ev_ref (EV_A);
3520 ev_io_stop (EV_A_ &timerfd_w);
3521
3522 close (timerfd);
3523 timerfd = -2;
3524
3525 evtimerfd_init (EV_A);
3526 /* reschedule periodics, in case we missed something */
3527 ev_feed_event (EV_A_ &timerfd_w, EV_CUSTOM);
3528 }
3529 #endif
3530
3531 #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1740 if (ev_is_active (&pipe_w)) 3532 if (ev_is_active (&pipe_w))
1741 { 3533 {
1742 /* this "locks" the handlers against writing to the pipe */ 3534 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1743 /* while we modify the fd vars */ 3535
1744 sig_pending = 1;
1745#if EV_ASYNC_ENABLE
1746 async_pending = 1;
1747#endif
1748
1749 ev_ref (EV_A); 3536 ev_ref (EV_A);
1750 ev_io_stop (EV_A_ &pipe_w); 3537 ev_io_stop (EV_A_ &pipe_w);
1751 3538
1752#if EV_USE_EVENTFD
1753 if (evfd >= 0)
1754 close (evfd);
1755#endif
1756
1757 if (evpipe [0] >= 0) 3539 if (evpipe [0] >= 0)
1758 {
1759 EV_WIN32_CLOSE_FD (evpipe [0]); 3540 EV_WIN32_CLOSE_FD (evpipe [0]);
1760 EV_WIN32_CLOSE_FD (evpipe [1]); 3541
3542 evpipe_init (EV_A);
3543 /* iterate over everything, in case we missed something before */
3544 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1761 } 3545 }
1762 3546 #endif
1763 evpipe_init (EV_A);
1764 /* now iterate over everything, in case we missed something */
1765 pipecb (EV_A_ &pipe_w, EV_READ);
1766 } 3547 }
1767 3548
1768 postfork = 0; 3549 postfork = 0;
1769} 3550}
1770 3551
1771#if EV_MULTIPLICITY 3552#if EV_MULTIPLICITY
1772 3553
3554ecb_cold
1773struct ev_loop * 3555struct ev_loop *
1774ev_loop_new (unsigned int flags) 3556ev_loop_new (unsigned int flags) EV_NOEXCEPT
1775{ 3557{
1776 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3558 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1777 3559
1778 memset (EV_A, 0, sizeof (struct ev_loop)); 3560 memset (EV_A, 0, sizeof (struct ev_loop));
1779 loop_init (EV_A_ flags); 3561 loop_init (EV_A_ flags);
1780 3562
1781 if (ev_backend (EV_A)) 3563 if (ev_backend (EV_A))
1782 return EV_A; 3564 return EV_A;
1783 3565
3566 ev_free (EV_A);
1784 return 0; 3567 return 0;
1785} 3568}
1786 3569
1787void
1788ev_loop_destroy (EV_P)
1789{
1790 loop_destroy (EV_A);
1791 ev_free (loop);
1792}
1793
1794void
1795ev_loop_fork (EV_P)
1796{
1797 postfork = 1; /* must be in line with ev_default_fork */
1798}
1799#endif /* multiplicity */ 3570#endif /* multiplicity */
1800 3571
1801#if EV_VERIFY 3572#if EV_VERIFY
1802static void noinline 3573ecb_noinline ecb_cold
3574static void
1803verify_watcher (EV_P_ W w) 3575verify_watcher (EV_P_ W w)
1804{ 3576{
1805 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3577 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1806 3578
1807 if (w->pending) 3579 if (w->pending)
1808 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3580 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1809} 3581}
1810 3582
1811static void noinline 3583ecb_noinline ecb_cold
3584static void
1812verify_heap (EV_P_ ANHE *heap, int N) 3585verify_heap (EV_P_ ANHE *heap, int N)
1813{ 3586{
1814 int i; 3587 int i;
1815 3588
1816 for (i = HEAP0; i < N + HEAP0; ++i) 3589 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1821 3594
1822 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3595 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1823 } 3596 }
1824} 3597}
1825 3598
1826static void noinline 3599ecb_noinline ecb_cold
3600static void
1827array_verify (EV_P_ W *ws, int cnt) 3601array_verify (EV_P_ W *ws, int cnt)
1828{ 3602{
1829 while (cnt--) 3603 while (cnt--)
1830 { 3604 {
1831 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3605 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1832 verify_watcher (EV_A_ ws [cnt]); 3606 verify_watcher (EV_A_ ws [cnt]);
1833 } 3607 }
1834} 3608}
1835#endif 3609#endif
1836 3610
1837#if EV_MINIMAL < 2 3611#if EV_FEATURE_API
1838void 3612void ecb_cold
1839ev_loop_verify (EV_P) 3613ev_verify (EV_P) EV_NOEXCEPT
1840{ 3614{
1841#if EV_VERIFY 3615#if EV_VERIFY
1842 int i; 3616 int i;
1843 WL w; 3617 WL w, w2;
1844 3618
1845 assert (activecnt >= -1); 3619 assert (activecnt >= -1);
1846 3620
1847 assert (fdchangemax >= fdchangecnt); 3621 assert (fdchangemax >= fdchangecnt);
1848 for (i = 0; i < fdchangecnt; ++i) 3622 for (i = 0; i < fdchangecnt; ++i)
1849 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3623 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1850 3624
1851 assert (anfdmax >= 0); 3625 assert (anfdmax >= 0);
1852 for (i = 0; i < anfdmax; ++i) 3626 for (i = 0; i < anfdmax; ++i)
3627 {
3628 int j = 0;
3629
1853 for (w = anfds [i].head; w; w = w->next) 3630 for (w = w2 = anfds [i].head; w; w = w->next)
1854 { 3631 {
1855 verify_watcher (EV_A_ (W)w); 3632 verify_watcher (EV_A_ (W)w);
3633
3634 if (j++ & 1)
3635 {
3636 assert (("libev: io watcher list contains a loop", w != w2));
3637 w2 = w2->next;
3638 }
3639
1856 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3640 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1857 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 3641 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1858 } 3642 }
3643 }
1859 3644
1860 assert (timermax >= timercnt); 3645 assert (timermax >= timercnt);
1861 verify_heap (EV_A_ timers, timercnt); 3646 verify_heap (EV_A_ timers, timercnt);
1862 3647
1863#if EV_PERIODIC_ENABLE 3648#if EV_PERIODIC_ENABLE
… …
1878#if EV_FORK_ENABLE 3663#if EV_FORK_ENABLE
1879 assert (forkmax >= forkcnt); 3664 assert (forkmax >= forkcnt);
1880 array_verify (EV_A_ (W *)forks, forkcnt); 3665 array_verify (EV_A_ (W *)forks, forkcnt);
1881#endif 3666#endif
1882 3667
3668#if EV_CLEANUP_ENABLE
3669 assert (cleanupmax >= cleanupcnt);
3670 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
3671#endif
3672
1883#if EV_ASYNC_ENABLE 3673#if EV_ASYNC_ENABLE
1884 assert (asyncmax >= asynccnt); 3674 assert (asyncmax >= asynccnt);
1885 array_verify (EV_A_ (W *)asyncs, asynccnt); 3675 array_verify (EV_A_ (W *)asyncs, asynccnt);
1886#endif 3676#endif
1887 3677
3678#if EV_PREPARE_ENABLE
1888 assert (preparemax >= preparecnt); 3679 assert (preparemax >= preparecnt);
1889 array_verify (EV_A_ (W *)prepares, preparecnt); 3680 array_verify (EV_A_ (W *)prepares, preparecnt);
3681#endif
1890 3682
3683#if EV_CHECK_ENABLE
1891 assert (checkmax >= checkcnt); 3684 assert (checkmax >= checkcnt);
1892 array_verify (EV_A_ (W *)checks, checkcnt); 3685 array_verify (EV_A_ (W *)checks, checkcnt);
3686#endif
1893 3687
1894# if 0 3688# if 0
3689#if EV_CHILD_ENABLE
1895 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 3690 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1896 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending) 3691 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
3692#endif
1897# endif 3693# endif
1898#endif 3694#endif
1899} 3695}
1900#endif 3696#endif
1901 3697
1902#if EV_MULTIPLICITY 3698#if EV_MULTIPLICITY
3699ecb_cold
1903struct ev_loop * 3700struct ev_loop *
1904ev_default_loop_init (unsigned int flags)
1905#else 3701#else
1906int 3702int
3703#endif
1907ev_default_loop (unsigned int flags) 3704ev_default_loop (unsigned int flags) EV_NOEXCEPT
1908#endif
1909{ 3705{
1910 if (!ev_default_loop_ptr) 3706 if (!ev_default_loop_ptr)
1911 { 3707 {
1912#if EV_MULTIPLICITY 3708#if EV_MULTIPLICITY
1913 EV_P = ev_default_loop_ptr = &default_loop_struct; 3709 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1917 3713
1918 loop_init (EV_A_ flags); 3714 loop_init (EV_A_ flags);
1919 3715
1920 if (ev_backend (EV_A)) 3716 if (ev_backend (EV_A))
1921 { 3717 {
1922#ifndef _WIN32 3718#if EV_CHILD_ENABLE
1923 ev_signal_init (&childev, childcb, SIGCHLD); 3719 ev_signal_init (&childev, childcb, SIGCHLD);
1924 ev_set_priority (&childev, EV_MAXPRI); 3720 ev_set_priority (&childev, EV_MAXPRI);
1925 ev_signal_start (EV_A_ &childev); 3721 ev_signal_start (EV_A_ &childev);
1926 ev_unref (EV_A); /* child watcher should not keep loop alive */ 3722 ev_unref (EV_A); /* child watcher should not keep loop alive */
1927#endif 3723#endif
… …
1932 3728
1933 return ev_default_loop_ptr; 3729 return ev_default_loop_ptr;
1934} 3730}
1935 3731
1936void 3732void
1937ev_default_destroy (void) 3733ev_loop_fork (EV_P) EV_NOEXCEPT
1938{ 3734{
1939#if EV_MULTIPLICITY 3735 postfork = 1;
1940 EV_P = ev_default_loop_ptr;
1941#endif
1942
1943 ev_default_loop_ptr = 0;
1944
1945#ifndef _WIN32
1946 ev_ref (EV_A); /* child watcher */
1947 ev_signal_stop (EV_A_ &childev);
1948#endif
1949
1950 loop_destroy (EV_A);
1951}
1952
1953void
1954ev_default_fork (void)
1955{
1956#if EV_MULTIPLICITY
1957 EV_P = ev_default_loop_ptr;
1958#endif
1959
1960 postfork = 1; /* must be in line with ev_loop_fork */
1961} 3736}
1962 3737
1963/*****************************************************************************/ 3738/*****************************************************************************/
1964 3739
1965void 3740void
… …
1967{ 3742{
1968 EV_CB_INVOKE ((W)w, revents); 3743 EV_CB_INVOKE ((W)w, revents);
1969} 3744}
1970 3745
1971unsigned int 3746unsigned int
1972ev_pending_count (EV_P) 3747ev_pending_count (EV_P) EV_NOEXCEPT
1973{ 3748{
1974 int pri; 3749 int pri;
1975 unsigned int count = 0; 3750 unsigned int count = 0;
1976 3751
1977 for (pri = NUMPRI; pri--; ) 3752 for (pri = NUMPRI; pri--; )
1978 count += pendingcnt [pri]; 3753 count += pendingcnt [pri];
1979 3754
1980 return count; 3755 return count;
1981} 3756}
1982 3757
1983void noinline 3758ecb_noinline
3759void
1984ev_invoke_pending (EV_P) 3760ev_invoke_pending (EV_P)
1985{ 3761{
1986 int pri; 3762 pendingpri = NUMPRI;
1987 3763
1988 for (pri = NUMPRI; pri--; ) 3764 do
3765 {
3766 --pendingpri;
3767
3768 /* pendingpri possibly gets modified in the inner loop */
1989 while (pendingcnt [pri]) 3769 while (pendingcnt [pendingpri])
1990 { 3770 {
1991 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3771 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
1992 3772
1993 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1994 /* ^ this is no longer true, as pending_w could be here */
1995
1996 p->w->pending = 0; 3773 p->w->pending = 0;
1997 EV_CB_INVOKE (p->w, p->events); 3774 EV_CB_INVOKE (p->w, p->events);
1998 EV_FREQUENT_CHECK; 3775 EV_FREQUENT_CHECK;
1999 } 3776 }
3777 }
3778 while (pendingpri);
2000} 3779}
2001 3780
2002#if EV_IDLE_ENABLE 3781#if EV_IDLE_ENABLE
2003/* make idle watchers pending. this handles the "call-idle */ 3782/* make idle watchers pending. this handles the "call-idle */
2004/* only when higher priorities are idle" logic */ 3783/* only when higher priorities are idle" logic */
2005inline_size void 3784inline_size void
2006idle_reify (EV_P) 3785idle_reify (EV_P)
2007{ 3786{
2008 if (expect_false (idleall)) 3787 if (ecb_expect_false (idleall))
2009 { 3788 {
2010 int pri; 3789 int pri;
2011 3790
2012 for (pri = NUMPRI; pri--; ) 3791 for (pri = NUMPRI; pri--; )
2013 { 3792 {
… …
2043 { 3822 {
2044 ev_at (w) += w->repeat; 3823 ev_at (w) += w->repeat;
2045 if (ev_at (w) < mn_now) 3824 if (ev_at (w) < mn_now)
2046 ev_at (w) = mn_now; 3825 ev_at (w) = mn_now;
2047 3826
2048 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 3827 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > EV_TS_CONST (0.)));
2049 3828
2050 ANHE_at_cache (timers [HEAP0]); 3829 ANHE_at_cache (timers [HEAP0]);
2051 downheap (timers, timercnt, HEAP0); 3830 downheap (timers, timercnt, HEAP0);
2052 } 3831 }
2053 else 3832 else
… …
2056 EV_FREQUENT_CHECK; 3835 EV_FREQUENT_CHECK;
2057 feed_reverse (EV_A_ (W)w); 3836 feed_reverse (EV_A_ (W)w);
2058 } 3837 }
2059 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 3838 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
2060 3839
2061 feed_reverse_done (EV_A_ EV_TIMEOUT); 3840 feed_reverse_done (EV_A_ EV_TIMER);
2062 } 3841 }
2063} 3842}
2064 3843
2065#if EV_PERIODIC_ENABLE 3844#if EV_PERIODIC_ENABLE
3845
3846ecb_noinline
3847static void
3848periodic_recalc (EV_P_ ev_periodic *w)
3849{
3850 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3851 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3852
3853 /* the above almost always errs on the low side */
3854 while (at <= ev_rt_now)
3855 {
3856 ev_tstamp nat = at + w->interval;
3857
3858 /* when resolution fails us, we use ev_rt_now */
3859 if (ecb_expect_false (nat == at))
3860 {
3861 at = ev_rt_now;
3862 break;
3863 }
3864
3865 at = nat;
3866 }
3867
3868 ev_at (w) = at;
3869}
3870
2066/* make periodics pending */ 3871/* make periodics pending */
2067inline_size void 3872inline_size void
2068periodics_reify (EV_P) 3873periodics_reify (EV_P)
2069{ 3874{
2070 EV_FREQUENT_CHECK; 3875 EV_FREQUENT_CHECK;
2071 3876
2072 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3877 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2073 { 3878 {
2074 int feed_count = 0;
2075
2076 do 3879 do
2077 { 3880 {
2078 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3881 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2079 3882
2080 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3883 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2089 ANHE_at_cache (periodics [HEAP0]); 3892 ANHE_at_cache (periodics [HEAP0]);
2090 downheap (periodics, periodiccnt, HEAP0); 3893 downheap (periodics, periodiccnt, HEAP0);
2091 } 3894 }
2092 else if (w->interval) 3895 else if (w->interval)
2093 { 3896 {
2094 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3897 periodic_recalc (EV_A_ w);
2095 /* if next trigger time is not sufficiently in the future, put it there */
2096 /* this might happen because of floating point inexactness */
2097 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2098 {
2099 ev_at (w) += w->interval;
2100
2101 /* if interval is unreasonably low we might still have a time in the past */
2102 /* so correct this. this will make the periodic very inexact, but the user */
2103 /* has effectively asked to get triggered more often than possible */
2104 if (ev_at (w) < ev_rt_now)
2105 ev_at (w) = ev_rt_now;
2106 }
2107
2108 ANHE_at_cache (periodics [HEAP0]); 3898 ANHE_at_cache (periodics [HEAP0]);
2109 downheap (periodics, periodiccnt, HEAP0); 3899 downheap (periodics, periodiccnt, HEAP0);
2110 } 3900 }
2111 else 3901 else
2112 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3902 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2119 feed_reverse_done (EV_A_ EV_PERIODIC); 3909 feed_reverse_done (EV_A_ EV_PERIODIC);
2120 } 3910 }
2121} 3911}
2122 3912
2123/* simply recalculate all periodics */ 3913/* simply recalculate all periodics */
2124/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 3914/* TODO: maybe ensure that at least one event happens when jumping forward? */
2125static void noinline 3915ecb_noinline ecb_cold
3916static void
2126periodics_reschedule (EV_P) 3917periodics_reschedule (EV_P)
2127{ 3918{
2128 int i; 3919 int i;
2129 3920
2130 /* adjust periodics after time jump */ 3921 /* adjust periodics after time jump */
… …
2133 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3924 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2134 3925
2135 if (w->reschedule_cb) 3926 if (w->reschedule_cb)
2136 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3927 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2137 else if (w->interval) 3928 else if (w->interval)
2138 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3929 periodic_recalc (EV_A_ w);
2139 3930
2140 ANHE_at_cache (periodics [i]); 3931 ANHE_at_cache (periodics [i]);
2141 } 3932 }
2142 3933
2143 reheap (periodics, periodiccnt); 3934 reheap (periodics, periodiccnt);
2144} 3935}
2145#endif 3936#endif
2146 3937
2147/* adjust all timers by a given offset */ 3938/* adjust all timers by a given offset */
2148static void noinline 3939ecb_noinline ecb_cold
3940static void
2149timers_reschedule (EV_P_ ev_tstamp adjust) 3941timers_reschedule (EV_P_ ev_tstamp adjust)
2150{ 3942{
2151 int i; 3943 int i;
2152 3944
2153 for (i = 0; i < timercnt; ++i) 3945 for (i = 0; i < timercnt; ++i)
… …
2157 ANHE_at_cache (*he); 3949 ANHE_at_cache (*he);
2158 } 3950 }
2159} 3951}
2160 3952
2161/* fetch new monotonic and realtime times from the kernel */ 3953/* fetch new monotonic and realtime times from the kernel */
2162/* also detetc if there was a timejump, and act accordingly */ 3954/* also detect if there was a timejump, and act accordingly */
2163inline_speed void 3955inline_speed void
2164time_update (EV_P_ ev_tstamp max_block) 3956time_update (EV_P_ ev_tstamp max_block)
2165{ 3957{
2166#if EV_USE_MONOTONIC 3958#if EV_USE_MONOTONIC
2167 if (expect_true (have_monotonic)) 3959 if (ecb_expect_true (have_monotonic))
2168 { 3960 {
2169 int i; 3961 int i;
2170 ev_tstamp odiff = rtmn_diff; 3962 ev_tstamp odiff = rtmn_diff;
2171 3963
2172 mn_now = get_clock (); 3964 mn_now = get_clock ();
2173 3965
2174 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3966 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
2175 /* interpolate in the meantime */ 3967 /* interpolate in the meantime */
2176 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 3968 if (ecb_expect_true (mn_now - now_floor < EV_TS_CONST (MIN_TIMEJUMP * .5)))
2177 { 3969 {
2178 ev_rt_now = rtmn_diff + mn_now; 3970 ev_rt_now = rtmn_diff + mn_now;
2179 return; 3971 return;
2180 } 3972 }
2181 3973
… …
2190 * doesn't hurt either as we only do this on time-jumps or 3982 * doesn't hurt either as we only do this on time-jumps or
2191 * in the unlikely event of having been preempted here. 3983 * in the unlikely event of having been preempted here.
2192 */ 3984 */
2193 for (i = 4; --i; ) 3985 for (i = 4; --i; )
2194 { 3986 {
3987 ev_tstamp diff;
2195 rtmn_diff = ev_rt_now - mn_now; 3988 rtmn_diff = ev_rt_now - mn_now;
2196 3989
2197 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3990 diff = odiff - rtmn_diff;
3991
3992 if (ecb_expect_true ((diff < EV_TS_CONST (0.) ? -diff : diff) < EV_TS_CONST (MIN_TIMEJUMP)))
2198 return; /* all is well */ 3993 return; /* all is well */
2199 3994
2200 ev_rt_now = ev_time (); 3995 ev_rt_now = ev_time ();
2201 mn_now = get_clock (); 3996 mn_now = get_clock ();
2202 now_floor = mn_now; 3997 now_floor = mn_now;
… …
2211 else 4006 else
2212#endif 4007#endif
2213 { 4008 {
2214 ev_rt_now = ev_time (); 4009 ev_rt_now = ev_time ();
2215 4010
2216 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 4011 if (ecb_expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + EV_TS_CONST (MIN_TIMEJUMP)))
2217 { 4012 {
2218 /* adjust timers. this is easy, as the offset is the same for all of them */ 4013 /* adjust timers. this is easy, as the offset is the same for all of them */
2219 timers_reschedule (EV_A_ ev_rt_now - mn_now); 4014 timers_reschedule (EV_A_ ev_rt_now - mn_now);
2220#if EV_PERIODIC_ENABLE 4015#if EV_PERIODIC_ENABLE
2221 periodics_reschedule (EV_A); 4016 periodics_reschedule (EV_A);
… …
2224 4019
2225 mn_now = ev_rt_now; 4020 mn_now = ev_rt_now;
2226 } 4021 }
2227} 4022}
2228 4023
2229void 4024int
2230ev_loop (EV_P_ int flags) 4025ev_run (EV_P_ int flags)
2231{ 4026{
2232#if EV_MINIMAL < 2 4027#if EV_FEATURE_API
2233 ++loop_depth; 4028 ++loop_depth;
2234#endif 4029#endif
2235 4030
2236 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 4031 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2237 4032
2238 loop_done = EVUNLOOP_CANCEL; 4033 loop_done = EVBREAK_CANCEL;
2239 4034
2240 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 4035 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2241 4036
2242 do 4037 do
2243 { 4038 {
2244#if EV_VERIFY >= 2 4039#if EV_VERIFY >= 2
2245 ev_loop_verify (EV_A); 4040 ev_verify (EV_A);
2246#endif 4041#endif
2247 4042
2248#ifndef _WIN32 4043#ifndef _WIN32
2249 if (expect_false (curpid)) /* penalise the forking check even more */ 4044 if (ecb_expect_false (curpid)) /* penalise the forking check even more */
2250 if (expect_false (getpid () != curpid)) 4045 if (ecb_expect_false (getpid () != curpid))
2251 { 4046 {
2252 curpid = getpid (); 4047 curpid = getpid ();
2253 postfork = 1; 4048 postfork = 1;
2254 } 4049 }
2255#endif 4050#endif
2256 4051
2257#if EV_FORK_ENABLE 4052#if EV_FORK_ENABLE
2258 /* we might have forked, so queue fork handlers */ 4053 /* we might have forked, so queue fork handlers */
2259 if (expect_false (postfork)) 4054 if (ecb_expect_false (postfork))
2260 if (forkcnt) 4055 if (forkcnt)
2261 { 4056 {
2262 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 4057 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2263 EV_INVOKE_PENDING; 4058 EV_INVOKE_PENDING;
2264 } 4059 }
2265#endif 4060#endif
2266 4061
4062#if EV_PREPARE_ENABLE
2267 /* queue prepare watchers (and execute them) */ 4063 /* queue prepare watchers (and execute them) */
2268 if (expect_false (preparecnt)) 4064 if (ecb_expect_false (preparecnt))
2269 { 4065 {
2270 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 4066 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2271 EV_INVOKE_PENDING; 4067 EV_INVOKE_PENDING;
2272 } 4068 }
4069#endif
2273 4070
2274 if (expect_false (loop_done)) 4071 if (ecb_expect_false (loop_done))
2275 break; 4072 break;
2276 4073
2277 /* we might have forked, so reify kernel state if necessary */ 4074 /* we might have forked, so reify kernel state if necessary */
2278 if (expect_false (postfork)) 4075 if (ecb_expect_false (postfork))
2279 loop_fork (EV_A); 4076 loop_fork (EV_A);
2280 4077
2281 /* update fd-related kernel structures */ 4078 /* update fd-related kernel structures */
2282 fd_reify (EV_A); 4079 fd_reify (EV_A);
2283 4080
2284 /* calculate blocking time */ 4081 /* calculate blocking time */
2285 { 4082 {
2286 ev_tstamp waittime = 0.; 4083 ev_tstamp waittime = 0.;
2287 ev_tstamp sleeptime = 0.; 4084 ev_tstamp sleeptime = 0.;
2288 4085
4086 /* remember old timestamp for io_blocktime calculation */
4087 ev_tstamp prev_mn_now = mn_now;
4088
4089 /* update time to cancel out callback processing overhead */
4090 time_update (EV_A_ EV_TS_CONST (EV_TSTAMP_HUGE));
4091
4092 /* from now on, we want a pipe-wake-up */
4093 pipe_write_wanted = 1;
4094
4095 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
4096
2289 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 4097 if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2290 { 4098 {
2291 /* remember old timestamp for io_blocktime calculation */
2292 ev_tstamp prev_mn_now = mn_now;
2293
2294 /* update time to cancel out callback processing overhead */
2295 time_update (EV_A_ 1e100);
2296
2297 waittime = MAX_BLOCKTIME; 4099 waittime = EV_TS_CONST (MAX_BLOCKTIME);
4100
4101#if EV_USE_MONOTONIC
4102 if (ecb_expect_true (have_monotonic))
4103 {
4104#if EV_USE_TIMERFD
4105 /* sleep a lot longer when we can reliably detect timejumps */
4106 if (ecb_expect_true (timerfd != -1))
4107 waittime = EV_TS_CONST (MAX_BLOCKTIME2);
4108#endif
4109#if !EV_PERIODIC_ENABLE
4110 /* without periodics but with monotonic clock there is no need */
4111 /* for any time jump detection, so sleep longer */
4112 waittime = EV_TS_CONST (MAX_BLOCKTIME2);
4113#endif
4114 }
4115#endif
2298 4116
2299 if (timercnt) 4117 if (timercnt)
2300 { 4118 {
2301 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 4119 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2302 if (waittime > to) waittime = to; 4120 if (waittime > to) waittime = to;
2303 } 4121 }
2304 4122
2305#if EV_PERIODIC_ENABLE 4123#if EV_PERIODIC_ENABLE
2306 if (periodiccnt) 4124 if (periodiccnt)
2307 { 4125 {
2308 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 4126 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2309 if (waittime > to) waittime = to; 4127 if (waittime > to) waittime = to;
2310 } 4128 }
2311#endif 4129#endif
2312 4130
2313 /* don't let timeouts decrease the waittime below timeout_blocktime */ 4131 /* don't let timeouts decrease the waittime below timeout_blocktime */
2314 if (expect_false (waittime < timeout_blocktime)) 4132 if (ecb_expect_false (waittime < timeout_blocktime))
2315 waittime = timeout_blocktime; 4133 waittime = timeout_blocktime;
2316 4134
4135 /* now there are two more special cases left, either we have
4136 * already-expired timers, so we should not sleep, or we have timers
4137 * that expire very soon, in which case we need to wait for a minimum
4138 * amount of time for some event loop backends.
4139 */
4140 if (ecb_expect_false (waittime < backend_mintime))
4141 waittime = waittime <= EV_TS_CONST (0.)
4142 ? EV_TS_CONST (0.)
4143 : backend_mintime;
4144
2317 /* extra check because io_blocktime is commonly 0 */ 4145 /* extra check because io_blocktime is commonly 0 */
2318 if (expect_false (io_blocktime)) 4146 if (ecb_expect_false (io_blocktime))
2319 { 4147 {
2320 sleeptime = io_blocktime - (mn_now - prev_mn_now); 4148 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2321 4149
2322 if (sleeptime > waittime - backend_fudge) 4150 if (sleeptime > waittime - backend_mintime)
2323 sleeptime = waittime - backend_fudge; 4151 sleeptime = waittime - backend_mintime;
2324 4152
2325 if (expect_true (sleeptime > 0.)) 4153 if (ecb_expect_true (sleeptime > EV_TS_CONST (0.)))
2326 { 4154 {
2327 ev_sleep (sleeptime); 4155 ev_sleep (sleeptime);
2328 waittime -= sleeptime; 4156 waittime -= sleeptime;
2329 } 4157 }
2330 } 4158 }
2331 } 4159 }
2332 4160
2333#if EV_MINIMAL < 2 4161#if EV_FEATURE_API
2334 ++loop_count; 4162 ++loop_count;
2335#endif 4163#endif
2336 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 4164 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2337 backend_poll (EV_A_ waittime); 4165 backend_poll (EV_A_ waittime);
2338 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 4166 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
4167
4168 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
4169
4170 ECB_MEMORY_FENCE_ACQUIRE;
4171 if (pipe_write_skipped)
4172 {
4173 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
4174 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
4175 }
2339 4176
2340 /* update ev_rt_now, do magic */ 4177 /* update ev_rt_now, do magic */
2341 time_update (EV_A_ waittime + sleeptime); 4178 time_update (EV_A_ waittime + sleeptime);
2342 } 4179 }
2343 4180
… …
2350#if EV_IDLE_ENABLE 4187#if EV_IDLE_ENABLE
2351 /* queue idle watchers unless other events are pending */ 4188 /* queue idle watchers unless other events are pending */
2352 idle_reify (EV_A); 4189 idle_reify (EV_A);
2353#endif 4190#endif
2354 4191
4192#if EV_CHECK_ENABLE
2355 /* queue check watchers, to be executed first */ 4193 /* queue check watchers, to be executed first */
2356 if (expect_false (checkcnt)) 4194 if (ecb_expect_false (checkcnt))
2357 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 4195 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
4196#endif
2358 4197
2359 EV_INVOKE_PENDING; 4198 EV_INVOKE_PENDING;
2360 } 4199 }
2361 while (expect_true ( 4200 while (ecb_expect_true (
2362 activecnt 4201 activecnt
2363 && !loop_done 4202 && !loop_done
2364 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 4203 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2365 )); 4204 ));
2366 4205
2367 if (loop_done == EVUNLOOP_ONE) 4206 if (loop_done == EVBREAK_ONE)
2368 loop_done = EVUNLOOP_CANCEL; 4207 loop_done = EVBREAK_CANCEL;
2369 4208
2370#if EV_MINIMAL < 2 4209#if EV_FEATURE_API
2371 --loop_depth; 4210 --loop_depth;
2372#endif 4211#endif
4212
4213 return activecnt;
2373} 4214}
2374 4215
2375void 4216void
2376ev_unloop (EV_P_ int how) 4217ev_break (EV_P_ int how) EV_NOEXCEPT
2377{ 4218{
2378 loop_done = how; 4219 loop_done = how;
2379} 4220}
2380 4221
2381void 4222void
2382ev_ref (EV_P) 4223ev_ref (EV_P) EV_NOEXCEPT
2383{ 4224{
2384 ++activecnt; 4225 ++activecnt;
2385} 4226}
2386 4227
2387void 4228void
2388ev_unref (EV_P) 4229ev_unref (EV_P) EV_NOEXCEPT
2389{ 4230{
2390 --activecnt; 4231 --activecnt;
2391} 4232}
2392 4233
2393void 4234void
2394ev_now_update (EV_P) 4235ev_now_update (EV_P) EV_NOEXCEPT
2395{ 4236{
2396 time_update (EV_A_ 1e100); 4237 time_update (EV_A_ EV_TSTAMP_HUGE);
2397} 4238}
2398 4239
2399void 4240void
2400ev_suspend (EV_P) 4241ev_suspend (EV_P) EV_NOEXCEPT
2401{ 4242{
2402 ev_now_update (EV_A); 4243 ev_now_update (EV_A);
2403} 4244}
2404 4245
2405void 4246void
2406ev_resume (EV_P) 4247ev_resume (EV_P) EV_NOEXCEPT
2407{ 4248{
2408 ev_tstamp mn_prev = mn_now; 4249 ev_tstamp mn_prev = mn_now;
2409 4250
2410 ev_now_update (EV_A); 4251 ev_now_update (EV_A);
2411 timers_reschedule (EV_A_ mn_now - mn_prev); 4252 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2428inline_size void 4269inline_size void
2429wlist_del (WL *head, WL elem) 4270wlist_del (WL *head, WL elem)
2430{ 4271{
2431 while (*head) 4272 while (*head)
2432 { 4273 {
2433 if (expect_true (*head == elem)) 4274 if (ecb_expect_true (*head == elem))
2434 { 4275 {
2435 *head = elem->next; 4276 *head = elem->next;
2436 break; 4277 break;
2437 } 4278 }
2438 4279
… …
2450 w->pending = 0; 4291 w->pending = 0;
2451 } 4292 }
2452} 4293}
2453 4294
2454int 4295int
2455ev_clear_pending (EV_P_ void *w) 4296ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
2456{ 4297{
2457 W w_ = (W)w; 4298 W w_ = (W)w;
2458 int pending = w_->pending; 4299 int pending = w_->pending;
2459 4300
2460 if (expect_true (pending)) 4301 if (ecb_expect_true (pending))
2461 { 4302 {
2462 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 4303 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2463 p->w = (W)&pending_w; 4304 p->w = (W)&pending_w;
2464 w_->pending = 0; 4305 w_->pending = 0;
2465 return p->events; 4306 return p->events;
… …
2492 w->active = 0; 4333 w->active = 0;
2493} 4334}
2494 4335
2495/*****************************************************************************/ 4336/*****************************************************************************/
2496 4337
2497void noinline 4338ecb_noinline
4339void
2498ev_io_start (EV_P_ ev_io *w) 4340ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
2499{ 4341{
2500 int fd = w->fd; 4342 int fd = w->fd;
2501 4343
2502 if (expect_false (ev_is_active (w))) 4344 if (ecb_expect_false (ev_is_active (w)))
2503 return; 4345 return;
2504 4346
2505 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 4347 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2506 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 4348 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2507 4349
4350#if EV_VERIFY >= 2
4351 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
4352#endif
2508 EV_FREQUENT_CHECK; 4353 EV_FREQUENT_CHECK;
2509 4354
2510 ev_start (EV_A_ (W)w, 1); 4355 ev_start (EV_A_ (W)w, 1);
2511 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 4356 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
2512 wlist_add (&anfds[fd].head, (WL)w); 4357 wlist_add (&anfds[fd].head, (WL)w);
4358
4359 /* common bug, apparently */
4360 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
2513 4361
2514 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 4362 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2515 w->events &= ~EV__IOFDSET; 4363 w->events &= ~EV__IOFDSET;
2516 4364
2517 EV_FREQUENT_CHECK; 4365 EV_FREQUENT_CHECK;
2518} 4366}
2519 4367
2520void noinline 4368ecb_noinline
4369void
2521ev_io_stop (EV_P_ ev_io *w) 4370ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
2522{ 4371{
2523 clear_pending (EV_A_ (W)w); 4372 clear_pending (EV_A_ (W)w);
2524 if (expect_false (!ev_is_active (w))) 4373 if (ecb_expect_false (!ev_is_active (w)))
2525 return; 4374 return;
2526 4375
2527 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 4376 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2528 4377
4378#if EV_VERIFY >= 2
4379 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
4380#endif
2529 EV_FREQUENT_CHECK; 4381 EV_FREQUENT_CHECK;
2530 4382
2531 wlist_del (&anfds[w->fd].head, (WL)w); 4383 wlist_del (&anfds[w->fd].head, (WL)w);
2532 ev_stop (EV_A_ (W)w); 4384 ev_stop (EV_A_ (W)w);
2533 4385
2534 fd_change (EV_A_ w->fd, 1); 4386 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2535 4387
2536 EV_FREQUENT_CHECK; 4388 EV_FREQUENT_CHECK;
2537} 4389}
2538 4390
2539void noinline 4391ecb_noinline
4392void
2540ev_timer_start (EV_P_ ev_timer *w) 4393ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
2541{ 4394{
2542 if (expect_false (ev_is_active (w))) 4395 if (ecb_expect_false (ev_is_active (w)))
2543 return; 4396 return;
2544 4397
2545 ev_at (w) += mn_now; 4398 ev_at (w) += mn_now;
2546 4399
2547 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 4400 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2548 4401
2549 EV_FREQUENT_CHECK; 4402 EV_FREQUENT_CHECK;
2550 4403
2551 ++timercnt; 4404 ++timercnt;
2552 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 4405 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
2553 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 4406 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
2554 ANHE_w (timers [ev_active (w)]) = (WT)w; 4407 ANHE_w (timers [ev_active (w)]) = (WT)w;
2555 ANHE_at_cache (timers [ev_active (w)]); 4408 ANHE_at_cache (timers [ev_active (w)]);
2556 upheap (timers, ev_active (w)); 4409 upheap (timers, ev_active (w));
2557 4410
2558 EV_FREQUENT_CHECK; 4411 EV_FREQUENT_CHECK;
2559 4412
2560 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 4413 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2561} 4414}
2562 4415
2563void noinline 4416ecb_noinline
4417void
2564ev_timer_stop (EV_P_ ev_timer *w) 4418ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
2565{ 4419{
2566 clear_pending (EV_A_ (W)w); 4420 clear_pending (EV_A_ (W)w);
2567 if (expect_false (!ev_is_active (w))) 4421 if (ecb_expect_false (!ev_is_active (w)))
2568 return; 4422 return;
2569 4423
2570 EV_FREQUENT_CHECK; 4424 EV_FREQUENT_CHECK;
2571 4425
2572 { 4426 {
… …
2574 4428
2575 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 4429 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2576 4430
2577 --timercnt; 4431 --timercnt;
2578 4432
2579 if (expect_true (active < timercnt + HEAP0)) 4433 if (ecb_expect_true (active < timercnt + HEAP0))
2580 { 4434 {
2581 timers [active] = timers [timercnt + HEAP0]; 4435 timers [active] = timers [timercnt + HEAP0];
2582 adjustheap (timers, timercnt, active); 4436 adjustheap (timers, timercnt, active);
2583 } 4437 }
2584 } 4438 }
2585 4439
4440 ev_at (w) -= mn_now;
4441
4442 ev_stop (EV_A_ (W)w);
4443
2586 EV_FREQUENT_CHECK; 4444 EV_FREQUENT_CHECK;
2587
2588 ev_at (w) -= mn_now;
2589
2590 ev_stop (EV_A_ (W)w);
2591} 4445}
2592 4446
2593void noinline 4447ecb_noinline
4448void
2594ev_timer_again (EV_P_ ev_timer *w) 4449ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
2595{ 4450{
2596 EV_FREQUENT_CHECK; 4451 EV_FREQUENT_CHECK;
4452
4453 clear_pending (EV_A_ (W)w);
2597 4454
2598 if (ev_is_active (w)) 4455 if (ev_is_active (w))
2599 { 4456 {
2600 if (w->repeat) 4457 if (w->repeat)
2601 { 4458 {
… …
2614 4471
2615 EV_FREQUENT_CHECK; 4472 EV_FREQUENT_CHECK;
2616} 4473}
2617 4474
2618ev_tstamp 4475ev_tstamp
2619ev_timer_remaining (EV_P_ ev_timer *w) 4476ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
2620{ 4477{
2621 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4478 return ev_at (w) - (ev_is_active (w) ? mn_now : EV_TS_CONST (0.));
2622} 4479}
2623 4480
2624#if EV_PERIODIC_ENABLE 4481#if EV_PERIODIC_ENABLE
2625void noinline 4482ecb_noinline
4483void
2626ev_periodic_start (EV_P_ ev_periodic *w) 4484ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
2627{ 4485{
2628 if (expect_false (ev_is_active (w))) 4486 if (ecb_expect_false (ev_is_active (w)))
2629 return; 4487 return;
4488
4489#if EV_USE_TIMERFD
4490 if (timerfd == -2)
4491 evtimerfd_init (EV_A);
4492#endif
2630 4493
2631 if (w->reschedule_cb) 4494 if (w->reschedule_cb)
2632 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4495 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2633 else if (w->interval) 4496 else if (w->interval)
2634 { 4497 {
2635 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 4498 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2636 /* this formula differs from the one in periodic_reify because we do not always round up */ 4499 periodic_recalc (EV_A_ w);
2637 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2638 } 4500 }
2639 else 4501 else
2640 ev_at (w) = w->offset; 4502 ev_at (w) = w->offset;
2641 4503
2642 EV_FREQUENT_CHECK; 4504 EV_FREQUENT_CHECK;
2643 4505
2644 ++periodiccnt; 4506 ++periodiccnt;
2645 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4507 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2646 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4508 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
2647 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4509 ANHE_w (periodics [ev_active (w)]) = (WT)w;
2648 ANHE_at_cache (periodics [ev_active (w)]); 4510 ANHE_at_cache (periodics [ev_active (w)]);
2649 upheap (periodics, ev_active (w)); 4511 upheap (periodics, ev_active (w));
2650 4512
2651 EV_FREQUENT_CHECK; 4513 EV_FREQUENT_CHECK;
2652 4514
2653 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4515 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2654} 4516}
2655 4517
2656void noinline 4518ecb_noinline
4519void
2657ev_periodic_stop (EV_P_ ev_periodic *w) 4520ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
2658{ 4521{
2659 clear_pending (EV_A_ (W)w); 4522 clear_pending (EV_A_ (W)w);
2660 if (expect_false (!ev_is_active (w))) 4523 if (ecb_expect_false (!ev_is_active (w)))
2661 return; 4524 return;
2662 4525
2663 EV_FREQUENT_CHECK; 4526 EV_FREQUENT_CHECK;
2664 4527
2665 { 4528 {
… …
2667 4530
2668 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 4531 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2669 4532
2670 --periodiccnt; 4533 --periodiccnt;
2671 4534
2672 if (expect_true (active < periodiccnt + HEAP0)) 4535 if (ecb_expect_true (active < periodiccnt + HEAP0))
2673 { 4536 {
2674 periodics [active] = periodics [periodiccnt + HEAP0]; 4537 periodics [active] = periodics [periodiccnt + HEAP0];
2675 adjustheap (periodics, periodiccnt, active); 4538 adjustheap (periodics, periodiccnt, active);
2676 } 4539 }
2677 } 4540 }
2678 4541
4542 ev_stop (EV_A_ (W)w);
4543
2679 EV_FREQUENT_CHECK; 4544 EV_FREQUENT_CHECK;
2680
2681 ev_stop (EV_A_ (W)w);
2682} 4545}
2683 4546
2684void noinline 4547ecb_noinline
4548void
2685ev_periodic_again (EV_P_ ev_periodic *w) 4549ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
2686{ 4550{
2687 /* TODO: use adjustheap and recalculation */ 4551 /* TODO: use adjustheap and recalculation */
2688 ev_periodic_stop (EV_A_ w); 4552 ev_periodic_stop (EV_A_ w);
2689 ev_periodic_start (EV_A_ w); 4553 ev_periodic_start (EV_A_ w);
2690} 4554}
… …
2692 4556
2693#ifndef SA_RESTART 4557#ifndef SA_RESTART
2694# define SA_RESTART 0 4558# define SA_RESTART 0
2695#endif 4559#endif
2696 4560
2697void noinline 4561#if EV_SIGNAL_ENABLE
4562
4563ecb_noinline
4564void
2698ev_signal_start (EV_P_ ev_signal *w) 4565ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
2699{ 4566{
2700 if (expect_false (ev_is_active (w))) 4567 if (ecb_expect_false (ev_is_active (w)))
2701 return; 4568 return;
2702 4569
2703 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4570 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2704 4571
2705#if EV_MULTIPLICITY 4572#if EV_MULTIPLICITY
2706 assert (("libev: a signal must not be attached to two different loops", 4573 assert (("libev: a signal must not be attached to two different loops",
2707 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4574 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2708 4575
2709 signals [w->signum - 1].loop = EV_A; 4576 signals [w->signum - 1].loop = EV_A;
4577 ECB_MEMORY_FENCE_RELEASE;
2710#endif 4578#endif
2711 4579
2712 EV_FREQUENT_CHECK; 4580 EV_FREQUENT_CHECK;
2713 4581
2714#if EV_USE_SIGNALFD 4582#if EV_USE_SIGNALFD
… …
2761 sa.sa_handler = ev_sighandler; 4629 sa.sa_handler = ev_sighandler;
2762 sigfillset (&sa.sa_mask); 4630 sigfillset (&sa.sa_mask);
2763 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 4631 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2764 sigaction (w->signum, &sa, 0); 4632 sigaction (w->signum, &sa, 0);
2765 4633
4634 if (origflags & EVFLAG_NOSIGMASK)
4635 {
2766 sigemptyset (&sa.sa_mask); 4636 sigemptyset (&sa.sa_mask);
2767 sigaddset (&sa.sa_mask, w->signum); 4637 sigaddset (&sa.sa_mask, w->signum);
2768 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 4638 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
4639 }
2769#endif 4640#endif
2770 } 4641 }
2771 4642
2772 EV_FREQUENT_CHECK; 4643 EV_FREQUENT_CHECK;
2773} 4644}
2774 4645
2775void noinline 4646ecb_noinline
4647void
2776ev_signal_stop (EV_P_ ev_signal *w) 4648ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
2777{ 4649{
2778 clear_pending (EV_A_ (W)w); 4650 clear_pending (EV_A_ (W)w);
2779 if (expect_false (!ev_is_active (w))) 4651 if (ecb_expect_false (!ev_is_active (w)))
2780 return; 4652 return;
2781 4653
2782 EV_FREQUENT_CHECK; 4654 EV_FREQUENT_CHECK;
2783 4655
2784 wlist_del (&signals [w->signum - 1].head, (WL)w); 4656 wlist_del (&signals [w->signum - 1].head, (WL)w);
… …
2807 } 4679 }
2808 4680
2809 EV_FREQUENT_CHECK; 4681 EV_FREQUENT_CHECK;
2810} 4682}
2811 4683
4684#endif
4685
4686#if EV_CHILD_ENABLE
4687
2812void 4688void
2813ev_child_start (EV_P_ ev_child *w) 4689ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
2814{ 4690{
2815#if EV_MULTIPLICITY 4691#if EV_MULTIPLICITY
2816 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4692 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2817#endif 4693#endif
2818 if (expect_false (ev_is_active (w))) 4694 if (ecb_expect_false (ev_is_active (w)))
2819 return; 4695 return;
2820 4696
2821 EV_FREQUENT_CHECK; 4697 EV_FREQUENT_CHECK;
2822 4698
2823 ev_start (EV_A_ (W)w, 1); 4699 ev_start (EV_A_ (W)w, 1);
2824 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4700 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2825 4701
2826 EV_FREQUENT_CHECK; 4702 EV_FREQUENT_CHECK;
2827} 4703}
2828 4704
2829void 4705void
2830ev_child_stop (EV_P_ ev_child *w) 4706ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
2831{ 4707{
2832 clear_pending (EV_A_ (W)w); 4708 clear_pending (EV_A_ (W)w);
2833 if (expect_false (!ev_is_active (w))) 4709 if (ecb_expect_false (!ev_is_active (w)))
2834 return; 4710 return;
2835 4711
2836 EV_FREQUENT_CHECK; 4712 EV_FREQUENT_CHECK;
2837 4713
2838 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4714 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2839 ev_stop (EV_A_ (W)w); 4715 ev_stop (EV_A_ (W)w);
2840 4716
2841 EV_FREQUENT_CHECK; 4717 EV_FREQUENT_CHECK;
2842} 4718}
4719
4720#endif
2843 4721
2844#if EV_STAT_ENABLE 4722#if EV_STAT_ENABLE
2845 4723
2846# ifdef _WIN32 4724# ifdef _WIN32
2847# undef lstat 4725# undef lstat
… …
2850 4728
2851#define DEF_STAT_INTERVAL 5.0074891 4729#define DEF_STAT_INTERVAL 5.0074891
2852#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4730#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2853#define MIN_STAT_INTERVAL 0.1074891 4731#define MIN_STAT_INTERVAL 0.1074891
2854 4732
2855static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4733ecb_noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2856 4734
2857#if EV_USE_INOTIFY 4735#if EV_USE_INOTIFY
2858# define EV_INOTIFY_BUFSIZE 8192
2859 4736
2860static void noinline 4737/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
4738# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
4739
4740ecb_noinline
4741static void
2861infy_add (EV_P_ ev_stat *w) 4742infy_add (EV_P_ ev_stat *w)
2862{ 4743{
2863 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); 4744 w->wd = inotify_add_watch (fs_fd, w->path,
4745 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4746 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4747 | IN_DONT_FOLLOW | IN_MASK_ADD);
2864 4748
2865 if (w->wd >= 0) 4749 if (w->wd >= 0)
2866 { 4750 {
2867 struct statfs sfs; 4751 struct statfs sfs;
2868 4752
… …
2872 4756
2873 if (!fs_2625) 4757 if (!fs_2625)
2874 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4758 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2875 else if (!statfs (w->path, &sfs) 4759 else if (!statfs (w->path, &sfs)
2876 && (sfs.f_type == 0x1373 /* devfs */ 4760 && (sfs.f_type == 0x1373 /* devfs */
4761 || sfs.f_type == 0x4006 /* fat */
4762 || sfs.f_type == 0x4d44 /* msdos */
2877 || sfs.f_type == 0xEF53 /* ext2/3 */ 4763 || sfs.f_type == 0xEF53 /* ext2/3 */
4764 || sfs.f_type == 0x72b6 /* jffs2 */
4765 || sfs.f_type == 0x858458f6 /* ramfs */
4766 || sfs.f_type == 0x5346544e /* ntfs */
2878 || sfs.f_type == 0x3153464a /* jfs */ 4767 || sfs.f_type == 0x3153464a /* jfs */
4768 || sfs.f_type == 0x9123683e /* btrfs */
2879 || sfs.f_type == 0x52654973 /* reiser3 */ 4769 || sfs.f_type == 0x52654973 /* reiser3 */
2880 || sfs.f_type == 0x01021994 /* tempfs */ 4770 || sfs.f_type == 0x01021994 /* tmpfs */
2881 || sfs.f_type == 0x58465342 /* xfs */)) 4771 || sfs.f_type == 0x58465342 /* xfs */))
2882 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4772 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
2883 else 4773 else
2884 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4774 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2885 } 4775 }
… …
2906 if (!pend || pend == path) 4796 if (!pend || pend == path)
2907 break; 4797 break;
2908 4798
2909 *pend = 0; 4799 *pend = 0;
2910 w->wd = inotify_add_watch (fs_fd, path, mask); 4800 w->wd = inotify_add_watch (fs_fd, path, mask);
2911 } 4801 }
2912 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 4802 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2913 } 4803 }
2914 } 4804 }
2915 4805
2916 if (w->wd >= 0) 4806 if (w->wd >= 0)
2917 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4807 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2918 4808
2919 /* now re-arm timer, if required */ 4809 /* now re-arm timer, if required */
2920 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4810 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2921 ev_timer_again (EV_A_ &w->timer); 4811 ev_timer_again (EV_A_ &w->timer);
2922 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4812 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2923} 4813}
2924 4814
2925static void noinline 4815ecb_noinline
4816static void
2926infy_del (EV_P_ ev_stat *w) 4817infy_del (EV_P_ ev_stat *w)
2927{ 4818{
2928 int slot; 4819 int slot;
2929 int wd = w->wd; 4820 int wd = w->wd;
2930 4821
2931 if (wd < 0) 4822 if (wd < 0)
2932 return; 4823 return;
2933 4824
2934 w->wd = -2; 4825 w->wd = -2;
2935 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 4826 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2936 wlist_del (&fs_hash [slot].head, (WL)w); 4827 wlist_del (&fs_hash [slot].head, (WL)w);
2937 4828
2938 /* remove this watcher, if others are watching it, they will rearm */ 4829 /* remove this watcher, if others are watching it, they will rearm */
2939 inotify_rm_watch (fs_fd, wd); 4830 inotify_rm_watch (fs_fd, wd);
2940} 4831}
2941 4832
2942static void noinline 4833ecb_noinline
4834static void
2943infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4835infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2944{ 4836{
2945 if (slot < 0) 4837 if (slot < 0)
2946 /* overflow, need to check for all hash slots */ 4838 /* overflow, need to check for all hash slots */
2947 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4839 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2948 infy_wd (EV_A_ slot, wd, ev); 4840 infy_wd (EV_A_ slot, wd, ev);
2949 else 4841 else
2950 { 4842 {
2951 WL w_; 4843 WL w_;
2952 4844
2953 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 4845 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2954 { 4846 {
2955 ev_stat *w = (ev_stat *)w_; 4847 ev_stat *w = (ev_stat *)w_;
2956 w_ = w_->next; /* lets us remove this watcher and all before it */ 4848 w_ = w_->next; /* lets us remove this watcher and all before it */
2957 4849
2958 if (w->wd == wd || wd == -1) 4850 if (w->wd == wd || wd == -1)
2959 { 4851 {
2960 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 4852 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2961 { 4853 {
2962 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4854 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2963 w->wd = -1; 4855 w->wd = -1;
2964 infy_add (EV_A_ w); /* re-add, no matter what */ 4856 infy_add (EV_A_ w); /* re-add, no matter what */
2965 } 4857 }
2966 4858
2967 stat_timer_cb (EV_A_ &w->timer, 0); 4859 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2972 4864
2973static void 4865static void
2974infy_cb (EV_P_ ev_io *w, int revents) 4866infy_cb (EV_P_ ev_io *w, int revents)
2975{ 4867{
2976 char buf [EV_INOTIFY_BUFSIZE]; 4868 char buf [EV_INOTIFY_BUFSIZE];
2977 struct inotify_event *ev = (struct inotify_event *)buf;
2978 int ofs; 4869 int ofs;
2979 int len = read (fs_fd, buf, sizeof (buf)); 4870 int len = read (fs_fd, buf, sizeof (buf));
2980 4871
2981 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 4872 for (ofs = 0; ofs < len; )
4873 {
4874 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2982 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4875 infy_wd (EV_A_ ev->wd, ev->wd, ev);
4876 ofs += sizeof (struct inotify_event) + ev->len;
4877 }
2983} 4878}
2984 4879
2985inline_size void 4880inline_size ecb_cold
4881void
2986check_2625 (EV_P) 4882ev_check_2625 (EV_P)
2987{ 4883{
2988 /* kernels < 2.6.25 are borked 4884 /* kernels < 2.6.25 are borked
2989 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4885 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2990 */ 4886 */
2991 struct utsname buf; 4887 if (ev_linux_version () < 0x020619)
2992 int major, minor, micro;
2993
2994 if (uname (&buf))
2995 return;
2996
2997 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2998 return;
2999
3000 if (major < 2
3001 || (major == 2 && minor < 6)
3002 || (major == 2 && minor == 6 && micro < 25))
3003 return; 4888 return;
3004 4889
3005 fs_2625 = 1; 4890 fs_2625 = 1;
3006} 4891}
3007 4892
3008inline_size int 4893inline_size int
3009infy_newfd (void) 4894infy_newfd (void)
3010{ 4895{
3011#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4896#if defined IN_CLOEXEC && defined IN_NONBLOCK
3012 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4897 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3013 if (fd >= 0) 4898 if (fd >= 0)
3014 return fd; 4899 return fd;
3015#endif 4900#endif
3016 return inotify_init (); 4901 return inotify_init ();
… …
3022 if (fs_fd != -2) 4907 if (fs_fd != -2)
3023 return; 4908 return;
3024 4909
3025 fs_fd = -1; 4910 fs_fd = -1;
3026 4911
3027 check_2625 (EV_A); 4912 ev_check_2625 (EV_A);
3028 4913
3029 fs_fd = infy_newfd (); 4914 fs_fd = infy_newfd ();
3030 4915
3031 if (fs_fd >= 0) 4916 if (fs_fd >= 0)
3032 { 4917 {
… …
3057 ev_io_set (&fs_w, fs_fd, EV_READ); 4942 ev_io_set (&fs_w, fs_fd, EV_READ);
3058 ev_io_start (EV_A_ &fs_w); 4943 ev_io_start (EV_A_ &fs_w);
3059 ev_unref (EV_A); 4944 ev_unref (EV_A);
3060 } 4945 }
3061 4946
3062 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4947 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
3063 { 4948 {
3064 WL w_ = fs_hash [slot].head; 4949 WL w_ = fs_hash [slot].head;
3065 fs_hash [slot].head = 0; 4950 fs_hash [slot].head = 0;
3066 4951
3067 while (w_) 4952 while (w_)
… …
3091#else 4976#else
3092# define EV_LSTAT(p,b) lstat (p, b) 4977# define EV_LSTAT(p,b) lstat (p, b)
3093#endif 4978#endif
3094 4979
3095void 4980void
3096ev_stat_stat (EV_P_ ev_stat *w) 4981ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
3097{ 4982{
3098 if (lstat (w->path, &w->attr) < 0) 4983 if (lstat (w->path, &w->attr) < 0)
3099 w->attr.st_nlink = 0; 4984 w->attr.st_nlink = 0;
3100 else if (!w->attr.st_nlink) 4985 else if (!w->attr.st_nlink)
3101 w->attr.st_nlink = 1; 4986 w->attr.st_nlink = 1;
3102} 4987}
3103 4988
3104static void noinline 4989ecb_noinline
4990static void
3105stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4991stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3106{ 4992{
3107 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4993 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3108 4994
3109 ev_statdata prev = w->attr; 4995 ev_statdata prev = w->attr;
… …
3140 ev_feed_event (EV_A_ w, EV_STAT); 5026 ev_feed_event (EV_A_ w, EV_STAT);
3141 } 5027 }
3142} 5028}
3143 5029
3144void 5030void
3145ev_stat_start (EV_P_ ev_stat *w) 5031ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
3146{ 5032{
3147 if (expect_false (ev_is_active (w))) 5033 if (ecb_expect_false (ev_is_active (w)))
3148 return; 5034 return;
3149 5035
3150 ev_stat_stat (EV_A_ w); 5036 ev_stat_stat (EV_A_ w);
3151 5037
3152 if (w->interval < MIN_STAT_INTERVAL && w->interval) 5038 if (w->interval < MIN_STAT_INTERVAL && w->interval)
… …
3171 5057
3172 EV_FREQUENT_CHECK; 5058 EV_FREQUENT_CHECK;
3173} 5059}
3174 5060
3175void 5061void
3176ev_stat_stop (EV_P_ ev_stat *w) 5062ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
3177{ 5063{
3178 clear_pending (EV_A_ (W)w); 5064 clear_pending (EV_A_ (W)w);
3179 if (expect_false (!ev_is_active (w))) 5065 if (ecb_expect_false (!ev_is_active (w)))
3180 return; 5066 return;
3181 5067
3182 EV_FREQUENT_CHECK; 5068 EV_FREQUENT_CHECK;
3183 5069
3184#if EV_USE_INOTIFY 5070#if EV_USE_INOTIFY
… …
3197} 5083}
3198#endif 5084#endif
3199 5085
3200#if EV_IDLE_ENABLE 5086#if EV_IDLE_ENABLE
3201void 5087void
3202ev_idle_start (EV_P_ ev_idle *w) 5088ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
3203{ 5089{
3204 if (expect_false (ev_is_active (w))) 5090 if (ecb_expect_false (ev_is_active (w)))
3205 return; 5091 return;
3206 5092
3207 pri_adjust (EV_A_ (W)w); 5093 pri_adjust (EV_A_ (W)w);
3208 5094
3209 EV_FREQUENT_CHECK; 5095 EV_FREQUENT_CHECK;
… …
3212 int active = ++idlecnt [ABSPRI (w)]; 5098 int active = ++idlecnt [ABSPRI (w)];
3213 5099
3214 ++idleall; 5100 ++idleall;
3215 ev_start (EV_A_ (W)w, active); 5101 ev_start (EV_A_ (W)w, active);
3216 5102
3217 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 5103 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
3218 idles [ABSPRI (w)][active - 1] = w; 5104 idles [ABSPRI (w)][active - 1] = w;
3219 } 5105 }
3220 5106
3221 EV_FREQUENT_CHECK; 5107 EV_FREQUENT_CHECK;
3222} 5108}
3223 5109
3224void 5110void
3225ev_idle_stop (EV_P_ ev_idle *w) 5111ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
3226{ 5112{
3227 clear_pending (EV_A_ (W)w); 5113 clear_pending (EV_A_ (W)w);
3228 if (expect_false (!ev_is_active (w))) 5114 if (ecb_expect_false (!ev_is_active (w)))
3229 return; 5115 return;
3230 5116
3231 EV_FREQUENT_CHECK; 5117 EV_FREQUENT_CHECK;
3232 5118
3233 { 5119 {
… …
3242 5128
3243 EV_FREQUENT_CHECK; 5129 EV_FREQUENT_CHECK;
3244} 5130}
3245#endif 5131#endif
3246 5132
5133#if EV_PREPARE_ENABLE
3247void 5134void
3248ev_prepare_start (EV_P_ ev_prepare *w) 5135ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
3249{ 5136{
3250 if (expect_false (ev_is_active (w))) 5137 if (ecb_expect_false (ev_is_active (w)))
3251 return; 5138 return;
3252 5139
3253 EV_FREQUENT_CHECK; 5140 EV_FREQUENT_CHECK;
3254 5141
3255 ev_start (EV_A_ (W)w, ++preparecnt); 5142 ev_start (EV_A_ (W)w, ++preparecnt);
3256 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 5143 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
3257 prepares [preparecnt - 1] = w; 5144 prepares [preparecnt - 1] = w;
3258 5145
3259 EV_FREQUENT_CHECK; 5146 EV_FREQUENT_CHECK;
3260} 5147}
3261 5148
3262void 5149void
3263ev_prepare_stop (EV_P_ ev_prepare *w) 5150ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
3264{ 5151{
3265 clear_pending (EV_A_ (W)w); 5152 clear_pending (EV_A_ (W)w);
3266 if (expect_false (!ev_is_active (w))) 5153 if (ecb_expect_false (!ev_is_active (w)))
3267 return; 5154 return;
3268 5155
3269 EV_FREQUENT_CHECK; 5156 EV_FREQUENT_CHECK;
3270 5157
3271 { 5158 {
… …
3277 5164
3278 ev_stop (EV_A_ (W)w); 5165 ev_stop (EV_A_ (W)w);
3279 5166
3280 EV_FREQUENT_CHECK; 5167 EV_FREQUENT_CHECK;
3281} 5168}
5169#endif
3282 5170
5171#if EV_CHECK_ENABLE
3283void 5172void
3284ev_check_start (EV_P_ ev_check *w) 5173ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
3285{ 5174{
3286 if (expect_false (ev_is_active (w))) 5175 if (ecb_expect_false (ev_is_active (w)))
3287 return; 5176 return;
3288 5177
3289 EV_FREQUENT_CHECK; 5178 EV_FREQUENT_CHECK;
3290 5179
3291 ev_start (EV_A_ (W)w, ++checkcnt); 5180 ev_start (EV_A_ (W)w, ++checkcnt);
3292 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 5181 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
3293 checks [checkcnt - 1] = w; 5182 checks [checkcnt - 1] = w;
3294 5183
3295 EV_FREQUENT_CHECK; 5184 EV_FREQUENT_CHECK;
3296} 5185}
3297 5186
3298void 5187void
3299ev_check_stop (EV_P_ ev_check *w) 5188ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
3300{ 5189{
3301 clear_pending (EV_A_ (W)w); 5190 clear_pending (EV_A_ (W)w);
3302 if (expect_false (!ev_is_active (w))) 5191 if (ecb_expect_false (!ev_is_active (w)))
3303 return; 5192 return;
3304 5193
3305 EV_FREQUENT_CHECK; 5194 EV_FREQUENT_CHECK;
3306 5195
3307 { 5196 {
… …
3313 5202
3314 ev_stop (EV_A_ (W)w); 5203 ev_stop (EV_A_ (W)w);
3315 5204
3316 EV_FREQUENT_CHECK; 5205 EV_FREQUENT_CHECK;
3317} 5206}
5207#endif
3318 5208
3319#if EV_EMBED_ENABLE 5209#if EV_EMBED_ENABLE
3320void noinline 5210ecb_noinline
5211void
3321ev_embed_sweep (EV_P_ ev_embed *w) 5212ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
3322{ 5213{
3323 ev_loop (w->other, EVLOOP_NONBLOCK); 5214 ev_run (w->other, EVRUN_NOWAIT);
3324} 5215}
3325 5216
3326static void 5217static void
3327embed_io_cb (EV_P_ ev_io *io, int revents) 5218embed_io_cb (EV_P_ ev_io *io, int revents)
3328{ 5219{
3329 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 5220 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3330 5221
3331 if (ev_cb (w)) 5222 if (ev_cb (w))
3332 ev_feed_event (EV_A_ (W)w, EV_EMBED); 5223 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3333 else 5224 else
3334 ev_loop (w->other, EVLOOP_NONBLOCK); 5225 ev_run (w->other, EVRUN_NOWAIT);
3335} 5226}
3336 5227
3337static void 5228static void
3338embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 5229embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3339{ 5230{
… …
3343 EV_P = w->other; 5234 EV_P = w->other;
3344 5235
3345 while (fdchangecnt) 5236 while (fdchangecnt)
3346 { 5237 {
3347 fd_reify (EV_A); 5238 fd_reify (EV_A);
3348 ev_loop (EV_A_ EVLOOP_NONBLOCK); 5239 ev_run (EV_A_ EVRUN_NOWAIT);
3349 } 5240 }
3350 } 5241 }
3351} 5242}
3352 5243
5244#if EV_FORK_ENABLE
3353static void 5245static void
3354embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) 5246embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
3355{ 5247{
3356 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 5248 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3357 5249
… …
3359 5251
3360 { 5252 {
3361 EV_P = w->other; 5253 EV_P = w->other;
3362 5254
3363 ev_loop_fork (EV_A); 5255 ev_loop_fork (EV_A);
3364 ev_loop (EV_A_ EVLOOP_NONBLOCK); 5256 ev_run (EV_A_ EVRUN_NOWAIT);
3365 } 5257 }
3366 5258
3367 ev_embed_start (EV_A_ w); 5259 ev_embed_start (EV_A_ w);
3368} 5260}
5261#endif
3369 5262
3370#if 0 5263#if 0
3371static void 5264static void
3372embed_idle_cb (EV_P_ ev_idle *idle, int revents) 5265embed_idle_cb (EV_P_ ev_idle *idle, int revents)
3373{ 5266{
3374 ev_idle_stop (EV_A_ idle); 5267 ev_idle_stop (EV_A_ idle);
3375} 5268}
3376#endif 5269#endif
3377 5270
3378void 5271void
3379ev_embed_start (EV_P_ ev_embed *w) 5272ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
3380{ 5273{
3381 if (expect_false (ev_is_active (w))) 5274 if (ecb_expect_false (ev_is_active (w)))
3382 return; 5275 return;
3383 5276
3384 { 5277 {
3385 EV_P = w->other; 5278 EV_P = w->other;
3386 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 5279 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
… …
3394 5287
3395 ev_prepare_init (&w->prepare, embed_prepare_cb); 5288 ev_prepare_init (&w->prepare, embed_prepare_cb);
3396 ev_set_priority (&w->prepare, EV_MINPRI); 5289 ev_set_priority (&w->prepare, EV_MINPRI);
3397 ev_prepare_start (EV_A_ &w->prepare); 5290 ev_prepare_start (EV_A_ &w->prepare);
3398 5291
5292#if EV_FORK_ENABLE
3399 ev_fork_init (&w->fork, embed_fork_cb); 5293 ev_fork_init (&w->fork, embed_fork_cb);
3400 ev_fork_start (EV_A_ &w->fork); 5294 ev_fork_start (EV_A_ &w->fork);
5295#endif
3401 5296
3402 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 5297 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
3403 5298
3404 ev_start (EV_A_ (W)w, 1); 5299 ev_start (EV_A_ (W)w, 1);
3405 5300
3406 EV_FREQUENT_CHECK; 5301 EV_FREQUENT_CHECK;
3407} 5302}
3408 5303
3409void 5304void
3410ev_embed_stop (EV_P_ ev_embed *w) 5305ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
3411{ 5306{
3412 clear_pending (EV_A_ (W)w); 5307 clear_pending (EV_A_ (W)w);
3413 if (expect_false (!ev_is_active (w))) 5308 if (ecb_expect_false (!ev_is_active (w)))
3414 return; 5309 return;
3415 5310
3416 EV_FREQUENT_CHECK; 5311 EV_FREQUENT_CHECK;
3417 5312
3418 ev_io_stop (EV_A_ &w->io); 5313 ev_io_stop (EV_A_ &w->io);
3419 ev_prepare_stop (EV_A_ &w->prepare); 5314 ev_prepare_stop (EV_A_ &w->prepare);
5315#if EV_FORK_ENABLE
3420 ev_fork_stop (EV_A_ &w->fork); 5316 ev_fork_stop (EV_A_ &w->fork);
5317#endif
5318
5319 ev_stop (EV_A_ (W)w);
3421 5320
3422 EV_FREQUENT_CHECK; 5321 EV_FREQUENT_CHECK;
3423} 5322}
3424#endif 5323#endif
3425 5324
3426#if EV_FORK_ENABLE 5325#if EV_FORK_ENABLE
3427void 5326void
3428ev_fork_start (EV_P_ ev_fork *w) 5327ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
3429{ 5328{
3430 if (expect_false (ev_is_active (w))) 5329 if (ecb_expect_false (ev_is_active (w)))
3431 return; 5330 return;
3432 5331
3433 EV_FREQUENT_CHECK; 5332 EV_FREQUENT_CHECK;
3434 5333
3435 ev_start (EV_A_ (W)w, ++forkcnt); 5334 ev_start (EV_A_ (W)w, ++forkcnt);
3436 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 5335 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
3437 forks [forkcnt - 1] = w; 5336 forks [forkcnt - 1] = w;
3438 5337
3439 EV_FREQUENT_CHECK; 5338 EV_FREQUENT_CHECK;
3440} 5339}
3441 5340
3442void 5341void
3443ev_fork_stop (EV_P_ ev_fork *w) 5342ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
3444{ 5343{
3445 clear_pending (EV_A_ (W)w); 5344 clear_pending (EV_A_ (W)w);
3446 if (expect_false (!ev_is_active (w))) 5345 if (ecb_expect_false (!ev_is_active (w)))
3447 return; 5346 return;
3448 5347
3449 EV_FREQUENT_CHECK; 5348 EV_FREQUENT_CHECK;
3450 5349
3451 { 5350 {
… …
3459 5358
3460 EV_FREQUENT_CHECK; 5359 EV_FREQUENT_CHECK;
3461} 5360}
3462#endif 5361#endif
3463 5362
5363#if EV_CLEANUP_ENABLE
5364void
5365ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
5366{
5367 if (ecb_expect_false (ev_is_active (w)))
5368 return;
5369
5370 EV_FREQUENT_CHECK;
5371
5372 ev_start (EV_A_ (W)w, ++cleanupcnt);
5373 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
5374 cleanups [cleanupcnt - 1] = w;
5375
5376 /* cleanup watchers should never keep a refcount on the loop */
5377 ev_unref (EV_A);
5378 EV_FREQUENT_CHECK;
5379}
5380
5381void
5382ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
5383{
5384 clear_pending (EV_A_ (W)w);
5385 if (ecb_expect_false (!ev_is_active (w)))
5386 return;
5387
5388 EV_FREQUENT_CHECK;
5389 ev_ref (EV_A);
5390
5391 {
5392 int active = ev_active (w);
5393
5394 cleanups [active - 1] = cleanups [--cleanupcnt];
5395 ev_active (cleanups [active - 1]) = active;
5396 }
5397
5398 ev_stop (EV_A_ (W)w);
5399
5400 EV_FREQUENT_CHECK;
5401}
5402#endif
5403
3464#if EV_ASYNC_ENABLE 5404#if EV_ASYNC_ENABLE
3465void 5405void
3466ev_async_start (EV_P_ ev_async *w) 5406ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
3467{ 5407{
3468 if (expect_false (ev_is_active (w))) 5408 if (ecb_expect_false (ev_is_active (w)))
3469 return; 5409 return;
3470 5410
5411 w->sent = 0;
5412
3471 evpipe_init (EV_A); 5413 evpipe_init (EV_A);
3472 5414
3473 EV_FREQUENT_CHECK; 5415 EV_FREQUENT_CHECK;
3474 5416
3475 ev_start (EV_A_ (W)w, ++asynccnt); 5417 ev_start (EV_A_ (W)w, ++asynccnt);
3476 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 5418 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
3477 asyncs [asynccnt - 1] = w; 5419 asyncs [asynccnt - 1] = w;
3478 5420
3479 EV_FREQUENT_CHECK; 5421 EV_FREQUENT_CHECK;
3480} 5422}
3481 5423
3482void 5424void
3483ev_async_stop (EV_P_ ev_async *w) 5425ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
3484{ 5426{
3485 clear_pending (EV_A_ (W)w); 5427 clear_pending (EV_A_ (W)w);
3486 if (expect_false (!ev_is_active (w))) 5428 if (ecb_expect_false (!ev_is_active (w)))
3487 return; 5429 return;
3488 5430
3489 EV_FREQUENT_CHECK; 5431 EV_FREQUENT_CHECK;
3490 5432
3491 { 5433 {
… …
3499 5441
3500 EV_FREQUENT_CHECK; 5442 EV_FREQUENT_CHECK;
3501} 5443}
3502 5444
3503void 5445void
3504ev_async_send (EV_P_ ev_async *w) 5446ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
3505{ 5447{
3506 w->sent = 1; 5448 w->sent = 1;
3507 evpipe_write (EV_A_ &async_pending); 5449 evpipe_write (EV_A_ &async_pending);
3508} 5450}
3509#endif 5451#endif
… …
3546 5488
3547 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5489 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3548} 5490}
3549 5491
3550void 5492void
3551ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 5493ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
3552{ 5494{
3553 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5495 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3554
3555 if (expect_false (!once))
3556 {
3557 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
3558 return;
3559 }
3560 5496
3561 once->cb = cb; 5497 once->cb = cb;
3562 once->arg = arg; 5498 once->arg = arg;
3563 5499
3564 ev_init (&once->io, once_cb_io); 5500 ev_init (&once->io, once_cb_io);
… …
3577} 5513}
3578 5514
3579/*****************************************************************************/ 5515/*****************************************************************************/
3580 5516
3581#if EV_WALK_ENABLE 5517#if EV_WALK_ENABLE
5518ecb_cold
3582void 5519void
3583ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 5520ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
3584{ 5521{
3585 int i, j; 5522 int i, j;
3586 ev_watcher_list *wl, *wn; 5523 ev_watcher_list *wl, *wn;
3587 5524
3588 if (types & (EV_IO | EV_EMBED)) 5525 if (types & (EV_IO | EV_EMBED))
… …
3631 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 5568 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3632#endif 5569#endif
3633 5570
3634#if EV_IDLE_ENABLE 5571#if EV_IDLE_ENABLE
3635 if (types & EV_IDLE) 5572 if (types & EV_IDLE)
3636 for (j = NUMPRI; i--; ) 5573 for (j = NUMPRI; j--; )
3637 for (i = idlecnt [j]; i--; ) 5574 for (i = idlecnt [j]; i--; )
3638 cb (EV_A_ EV_IDLE, idles [j][i]); 5575 cb (EV_A_ EV_IDLE, idles [j][i]);
3639#endif 5576#endif
3640 5577
3641#if EV_FORK_ENABLE 5578#if EV_FORK_ENABLE
… …
3649 if (types & EV_ASYNC) 5586 if (types & EV_ASYNC)
3650 for (i = asynccnt; i--; ) 5587 for (i = asynccnt; i--; )
3651 cb (EV_A_ EV_ASYNC, asyncs [i]); 5588 cb (EV_A_ EV_ASYNC, asyncs [i]);
3652#endif 5589#endif
3653 5590
5591#if EV_PREPARE_ENABLE
3654 if (types & EV_PREPARE) 5592 if (types & EV_PREPARE)
3655 for (i = preparecnt; i--; ) 5593 for (i = preparecnt; i--; )
3656#if EV_EMBED_ENABLE 5594# if EV_EMBED_ENABLE
3657 if (ev_cb (prepares [i]) != embed_prepare_cb) 5595 if (ev_cb (prepares [i]) != embed_prepare_cb)
3658#endif 5596# endif
3659 cb (EV_A_ EV_PREPARE, prepares [i]); 5597 cb (EV_A_ EV_PREPARE, prepares [i]);
5598#endif
3660 5599
5600#if EV_CHECK_ENABLE
3661 if (types & EV_CHECK) 5601 if (types & EV_CHECK)
3662 for (i = checkcnt; i--; ) 5602 for (i = checkcnt; i--; )
3663 cb (EV_A_ EV_CHECK, checks [i]); 5603 cb (EV_A_ EV_CHECK, checks [i]);
5604#endif
3664 5605
5606#if EV_SIGNAL_ENABLE
3665 if (types & EV_SIGNAL) 5607 if (types & EV_SIGNAL)
3666 for (i = 0; i < EV_NSIG - 1; ++i) 5608 for (i = 0; i < EV_NSIG - 1; ++i)
3667 for (wl = signals [i].head; wl; ) 5609 for (wl = signals [i].head; wl; )
3668 { 5610 {
3669 wn = wl->next; 5611 wn = wl->next;
3670 cb (EV_A_ EV_SIGNAL, wl); 5612 cb (EV_A_ EV_SIGNAL, wl);
3671 wl = wn; 5613 wl = wn;
3672 } 5614 }
5615#endif
3673 5616
5617#if EV_CHILD_ENABLE
3674 if (types & EV_CHILD) 5618 if (types & EV_CHILD)
3675 for (i = EV_PID_HASHSIZE; i--; ) 5619 for (i = (EV_PID_HASHSIZE); i--; )
3676 for (wl = childs [i]; wl; ) 5620 for (wl = childs [i]; wl; )
3677 { 5621 {
3678 wn = wl->next; 5622 wn = wl->next;
3679 cb (EV_A_ EV_CHILD, wl); 5623 cb (EV_A_ EV_CHILD, wl);
3680 wl = wn; 5624 wl = wn;
3681 } 5625 }
5626#endif
3682/* EV_STAT 0x00001000 /* stat data changed */ 5627/* EV_STAT 0x00001000 /* stat data changed */
3683/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 5628/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3684} 5629}
3685#endif 5630#endif
3686 5631
3687#if EV_MULTIPLICITY 5632#if EV_MULTIPLICITY
3688 #include "ev_wrap.h" 5633 #include "ev_wrap.h"
3689#endif 5634#endif
3690 5635
3691#ifdef __cplusplus
3692}
3693#endif
3694

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