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Comparing libev/ev.c (file contents):
Revision 1.308 by root, Sun Jul 19 20:39:54 2009 UTC vs.
Revision 1.527 by root, Wed Jan 22 22:38:19 2020 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007-2019 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
10 * 1. Redistributions of source code must retain the above copyright notice, 10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer. 11 * this list of conditions and the following disclaimer.
12 * 12 *
13 * 2. Redistributions in binary form must reproduce the above copyright 13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the 14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution. 15 * documentation and/or other materials provided with the distribution.
16 * 16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- 18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO 19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- 20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
… …
35 * and other provisions required by the GPL. If you do not delete the 35 * and other provisions required by the GPL. If you do not delete the
36 * provisions above, a recipient may use your version of this file under 36 * provisions above, a recipient may use your version of this file under
37 * either the BSD or the GPL. 37 * either the BSD or the GPL.
38 */ 38 */
39 39
40#ifdef __cplusplus
41extern "C" {
42#endif
43
44/* this big block deduces configuration from config.h */ 40/* this big block deduces configuration from config.h */
45#ifndef EV_STANDALONE 41#ifndef EV_STANDALONE
46# ifdef EV_CONFIG_H 42# ifdef EV_CONFIG_H
47# include EV_CONFIG_H 43# include EV_CONFIG_H
48# else 44# else
49# include "config.h" 45# include "config.h"
46# endif
47
48# if HAVE_FLOOR
49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1
51# endif
50# endif 52# endif
51 53
52# if HAVE_CLOCK_SYSCALL 54# if HAVE_CLOCK_SYSCALL
53# ifndef EV_USE_CLOCK_SYSCALL 55# ifndef EV_USE_CLOCK_SYSCALL
54# define EV_USE_CLOCK_SYSCALL 1 56# define EV_USE_CLOCK_SYSCALL 1
… …
57# endif 59# endif
58# ifndef EV_USE_MONOTONIC 60# ifndef EV_USE_MONOTONIC
59# define EV_USE_MONOTONIC 1 61# define EV_USE_MONOTONIC 1
60# endif 62# endif
61# endif 63# endif
62# elif !defined(EV_USE_CLOCK_SYSCALL) 64# elif !defined EV_USE_CLOCK_SYSCALL
63# define EV_USE_CLOCK_SYSCALL 0 65# define EV_USE_CLOCK_SYSCALL 0
64# endif 66# endif
65 67
66# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
67# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
… …
77# ifndef EV_USE_REALTIME 79# ifndef EV_USE_REALTIME
78# define EV_USE_REALTIME 0 80# define EV_USE_REALTIME 0
79# endif 81# endif
80# endif 82# endif
81 83
84# if HAVE_NANOSLEEP
82# ifndef EV_USE_NANOSLEEP 85# ifndef EV_USE_NANOSLEEP
83# if HAVE_NANOSLEEP
84# define EV_USE_NANOSLEEP 1 86# define EV_USE_NANOSLEEP EV_FEATURE_OS
87# endif
85# else 88# else
89# undef EV_USE_NANOSLEEP
86# define EV_USE_NANOSLEEP 0 90# define EV_USE_NANOSLEEP 0
91# endif
92
93# if HAVE_SELECT && HAVE_SYS_SELECT_H
94# ifndef EV_USE_SELECT
95# define EV_USE_SELECT EV_FEATURE_BACKENDS
87# endif 96# endif
97# else
98# undef EV_USE_SELECT
99# define EV_USE_SELECT 0
88# endif 100# endif
89 101
102# if HAVE_POLL && HAVE_POLL_H
90# ifndef EV_USE_SELECT 103# ifndef EV_USE_POLL
91# if HAVE_SELECT && HAVE_SYS_SELECT_H 104# define EV_USE_POLL EV_FEATURE_BACKENDS
92# define EV_USE_SELECT 1
93# else
94# define EV_USE_SELECT 0
95# endif 105# endif
96# endif
97
98# ifndef EV_USE_POLL
99# if HAVE_POLL && HAVE_POLL_H
100# define EV_USE_POLL 1
101# else 106# else
107# undef EV_USE_POLL
102# define EV_USE_POLL 0 108# define EV_USE_POLL 0
103# endif
104# endif 109# endif
105 110
106# ifndef EV_USE_EPOLL
107# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 111# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
108# define EV_USE_EPOLL 1 112# ifndef EV_USE_EPOLL
109# else 113# define EV_USE_EPOLL EV_FEATURE_BACKENDS
110# define EV_USE_EPOLL 0
111# endif 114# endif
115# else
116# undef EV_USE_EPOLL
117# define EV_USE_EPOLL 0
112# endif 118# endif
113 119
114# ifndef EV_USE_KQUEUE 120# if HAVE_LINUX_AIO_ABI_H
115# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 121# ifndef EV_USE_LINUXAIO
116# define EV_USE_KQUEUE 1 122# define EV_USE_LINUXAIO 0 /* was: EV_FEATURE_BACKENDS, always off by default */
117# else
118# define EV_USE_KQUEUE 0
119# endif 123# endif
124# else
125# undef EV_USE_LINUXAIO
126# define EV_USE_LINUXAIO 0
120# endif 127# endif
121 128
129# if HAVE_LINUX_FS_H && HAVE_SYS_TIMERFD_H && HAVE_KERNEL_RWF_T
122# ifndef EV_USE_PORT 130# ifndef EV_USE_IOURING
123# if HAVE_PORT_H && HAVE_PORT_CREATE 131# define EV_USE_IOURING EV_FEATURE_BACKENDS
124# define EV_USE_PORT 1
125# else
126# define EV_USE_PORT 0
127# endif 132# endif
128# endif
129
130# ifndef EV_USE_INOTIFY
131# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
132# define EV_USE_INOTIFY 1
133# else 133# else
134# undef EV_USE_IOURING
134# define EV_USE_INOTIFY 0 135# define EV_USE_IOURING 0
135# endif
136# endif
137
138# ifndef EV_USE_SIGNALFD
139# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
140# define EV_USE_SIGNALFD 1
141# else
142# define EV_USE_SIGNALFD 0
143# endif
144# endif
145
146# ifndef EV_USE_EVENTFD
147# if HAVE_EVENTFD
148# define EV_USE_EVENTFD 1
149# else
150# define EV_USE_EVENTFD 0
151# endif
152# endif 136# endif
153 137
138# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
139# ifndef EV_USE_KQUEUE
140# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
141# endif
142# else
143# undef EV_USE_KQUEUE
144# define EV_USE_KQUEUE 0
154#endif 145# endif
146
147# if HAVE_PORT_H && HAVE_PORT_CREATE
148# ifndef EV_USE_PORT
149# define EV_USE_PORT EV_FEATURE_BACKENDS
150# endif
151# else
152# undef EV_USE_PORT
153# define EV_USE_PORT 0
154# endif
155 155
156#include <math.h> 156# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
157# ifndef EV_USE_INOTIFY
158# define EV_USE_INOTIFY EV_FEATURE_OS
159# endif
160# else
161# undef EV_USE_INOTIFY
162# define EV_USE_INOTIFY 0
163# endif
164
165# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
166# ifndef EV_USE_SIGNALFD
167# define EV_USE_SIGNALFD EV_FEATURE_OS
168# endif
169# else
170# undef EV_USE_SIGNALFD
171# define EV_USE_SIGNALFD 0
172# endif
173
174# if HAVE_EVENTFD
175# ifndef EV_USE_EVENTFD
176# define EV_USE_EVENTFD EV_FEATURE_OS
177# endif
178# else
179# undef EV_USE_EVENTFD
180# define EV_USE_EVENTFD 0
181# endif
182
183# if HAVE_SYS_TIMERFD_H
184# ifndef EV_USE_TIMERFD
185# define EV_USE_TIMERFD EV_FEATURE_OS
186# endif
187# else
188# undef EV_USE_TIMERFD
189# define EV_USE_TIMERFD 0
190# endif
191
192#endif
193
194/* OS X, in its infinite idiocy, actually HARDCODES
195 * a limit of 1024 into their select. Where people have brains,
196 * OS X engineers apparently have a vacuum. Or maybe they were
197 * ordered to have a vacuum, or they do anything for money.
198 * This might help. Or not.
199 * Note that this must be defined early, as other include files
200 * will rely on this define as well.
201 */
202#define _DARWIN_UNLIMITED_SELECT 1
203
157#include <stdlib.h> 204#include <stdlib.h>
205#include <string.h>
158#include <fcntl.h> 206#include <fcntl.h>
159#include <stddef.h> 207#include <stddef.h>
160 208
161#include <stdio.h> 209#include <stdio.h>
162 210
163#include <assert.h> 211#include <assert.h>
164#include <errno.h> 212#include <errno.h>
165#include <sys/types.h> 213#include <sys/types.h>
166#include <time.h> 214#include <time.h>
215#include <limits.h>
167 216
168#include <signal.h> 217#include <signal.h>
169 218
170#ifdef EV_H 219#ifdef EV_H
171# include EV_H 220# include EV_H
172#else 221#else
173# include "ev.h" 222# include "ev.h"
223#endif
224
225#if EV_NO_THREADS
226# undef EV_NO_SMP
227# define EV_NO_SMP 1
228# undef ECB_NO_THREADS
229# define ECB_NO_THREADS 1
230#endif
231#if EV_NO_SMP
232# undef EV_NO_SMP
233# define ECB_NO_SMP 1
174#endif 234#endif
175 235
176#ifndef _WIN32 236#ifndef _WIN32
177# include <sys/time.h> 237# include <sys/time.h>
178# include <sys/wait.h> 238# include <sys/wait.h>
179# include <unistd.h> 239# include <unistd.h>
180#else 240#else
181# include <io.h> 241# include <io.h>
182# define WIN32_LEAN_AND_MEAN 242# define WIN32_LEAN_AND_MEAN
243# include <winsock2.h>
183# include <windows.h> 244# include <windows.h>
184# ifndef EV_SELECT_IS_WINSOCKET 245# ifndef EV_SELECT_IS_WINSOCKET
185# define EV_SELECT_IS_WINSOCKET 1 246# define EV_SELECT_IS_WINSOCKET 1
186# endif 247# endif
248# undef EV_AVOID_STDIO
187#endif 249#endif
188 250
189/* this block tries to deduce configuration from header-defined symbols and defaults */ 251/* this block tries to deduce configuration from header-defined symbols and defaults */
190 252
191/* try to deduce the maximum number of signals on this platform */ 253/* try to deduce the maximum number of signals on this platform */
192#if defined (EV_NSIG) 254#if defined EV_NSIG
193/* use what's provided */ 255/* use what's provided */
194#elif defined (NSIG) 256#elif defined NSIG
195# define EV_NSIG (NSIG) 257# define EV_NSIG (NSIG)
196#elif defined(_NSIG) 258#elif defined _NSIG
197# define EV_NSIG (_NSIG) 259# define EV_NSIG (_NSIG)
198#elif defined (SIGMAX) 260#elif defined SIGMAX
199# define EV_NSIG (SIGMAX+1) 261# define EV_NSIG (SIGMAX+1)
200#elif defined (SIG_MAX) 262#elif defined SIG_MAX
201# define EV_NSIG (SIG_MAX+1) 263# define EV_NSIG (SIG_MAX+1)
202#elif defined (_SIG_MAX) 264#elif defined _SIG_MAX
203# define EV_NSIG (_SIG_MAX+1) 265# define EV_NSIG (_SIG_MAX+1)
204#elif defined (MAXSIG) 266#elif defined MAXSIG
205# define EV_NSIG (MAXSIG+1) 267# define EV_NSIG (MAXSIG+1)
206#elif defined (MAX_SIG) 268#elif defined MAX_SIG
207# define EV_NSIG (MAX_SIG+1) 269# define EV_NSIG (MAX_SIG+1)
208#elif defined (SIGARRAYSIZE) 270#elif defined SIGARRAYSIZE
209# define EV_NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */ 271# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
210#elif defined (_sys_nsig) 272#elif defined _sys_nsig
211# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 273# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
212#else 274#else
213# error "unable to find value for NSIG, please report" 275# define EV_NSIG (8 * sizeof (sigset_t) + 1)
214/* to make it compile regardless, just remove the above line */ 276#endif
215# define EV_NSIG 65 277
278#ifndef EV_USE_FLOOR
279# define EV_USE_FLOOR 0
216#endif 280#endif
217 281
218#ifndef EV_USE_CLOCK_SYSCALL 282#ifndef EV_USE_CLOCK_SYSCALL
219# if __linux && __GLIBC__ >= 2 283# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
220# define EV_USE_CLOCK_SYSCALL 1 284# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
221# else 285# else
222# define EV_USE_CLOCK_SYSCALL 0 286# define EV_USE_CLOCK_SYSCALL 0
223# endif 287# endif
224#endif 288#endif
225 289
290#if !(_POSIX_TIMERS > 0)
291# ifndef EV_USE_MONOTONIC
292# define EV_USE_MONOTONIC 0
293# endif
294# ifndef EV_USE_REALTIME
295# define EV_USE_REALTIME 0
296# endif
297#endif
298
226#ifndef EV_USE_MONOTONIC 299#ifndef EV_USE_MONOTONIC
227# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 300# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
228# define EV_USE_MONOTONIC 1 301# define EV_USE_MONOTONIC EV_FEATURE_OS
229# else 302# else
230# define EV_USE_MONOTONIC 0 303# define EV_USE_MONOTONIC 0
231# endif 304# endif
232#endif 305#endif
233 306
… …
235# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 308# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
236#endif 309#endif
237 310
238#ifndef EV_USE_NANOSLEEP 311#ifndef EV_USE_NANOSLEEP
239# if _POSIX_C_SOURCE >= 199309L 312# if _POSIX_C_SOURCE >= 199309L
240# define EV_USE_NANOSLEEP 1 313# define EV_USE_NANOSLEEP EV_FEATURE_OS
241# else 314# else
242# define EV_USE_NANOSLEEP 0 315# define EV_USE_NANOSLEEP 0
243# endif 316# endif
244#endif 317#endif
245 318
246#ifndef EV_USE_SELECT 319#ifndef EV_USE_SELECT
247# define EV_USE_SELECT 1 320# define EV_USE_SELECT EV_FEATURE_BACKENDS
248#endif 321#endif
249 322
250#ifndef EV_USE_POLL 323#ifndef EV_USE_POLL
251# ifdef _WIN32 324# ifdef _WIN32
252# define EV_USE_POLL 0 325# define EV_USE_POLL 0
253# else 326# else
254# define EV_USE_POLL 1 327# define EV_USE_POLL EV_FEATURE_BACKENDS
255# endif 328# endif
256#endif 329#endif
257 330
258#ifndef EV_USE_EPOLL 331#ifndef EV_USE_EPOLL
259# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 332# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
260# define EV_USE_EPOLL 1 333# define EV_USE_EPOLL EV_FEATURE_BACKENDS
261# else 334# else
262# define EV_USE_EPOLL 0 335# define EV_USE_EPOLL 0
263# endif 336# endif
264#endif 337#endif
265 338
… …
269 342
270#ifndef EV_USE_PORT 343#ifndef EV_USE_PORT
271# define EV_USE_PORT 0 344# define EV_USE_PORT 0
272#endif 345#endif
273 346
347#ifndef EV_USE_LINUXAIO
348# if __linux /* libev currently assumes linux/aio_abi.h is always available on linux */
349# define EV_USE_LINUXAIO 0 /* was: 1, always off by default */
350# else
351# define EV_USE_LINUXAIO 0
352# endif
353#endif
354
355#ifndef EV_USE_IOURING
356# if __linux /* later checks might disable again */
357# define EV_USE_IOURING 1
358# else
359# define EV_USE_IOURING 0
360# endif
361#endif
362
274#ifndef EV_USE_INOTIFY 363#ifndef EV_USE_INOTIFY
275# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 364# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
276# define EV_USE_INOTIFY 1 365# define EV_USE_INOTIFY EV_FEATURE_OS
277# else 366# else
278# define EV_USE_INOTIFY 0 367# define EV_USE_INOTIFY 0
279# endif 368# endif
280#endif 369#endif
281 370
282#ifndef EV_PID_HASHSIZE 371#ifndef EV_PID_HASHSIZE
283# if EV_MINIMAL 372# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
284# define EV_PID_HASHSIZE 1
285# else
286# define EV_PID_HASHSIZE 16
287# endif
288#endif 373#endif
289 374
290#ifndef EV_INOTIFY_HASHSIZE 375#ifndef EV_INOTIFY_HASHSIZE
291# if EV_MINIMAL 376# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
292# define EV_INOTIFY_HASHSIZE 1
293# else
294# define EV_INOTIFY_HASHSIZE 16
295# endif
296#endif 377#endif
297 378
298#ifndef EV_USE_EVENTFD 379#ifndef EV_USE_EVENTFD
299# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 380# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
300# define EV_USE_EVENTFD 1 381# define EV_USE_EVENTFD EV_FEATURE_OS
301# else 382# else
302# define EV_USE_EVENTFD 0 383# define EV_USE_EVENTFD 0
303# endif 384# endif
304#endif 385#endif
305 386
306#ifndef EV_USE_SIGNALFD 387#ifndef EV_USE_SIGNALFD
307# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 9)) 388# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
308# define EV_USE_SIGNALFD 1 389# define EV_USE_SIGNALFD EV_FEATURE_OS
309# else 390# else
310# define EV_USE_SIGNALFD 0 391# define EV_USE_SIGNALFD 0
392# endif
393#endif
394
395#ifndef EV_USE_TIMERFD
396# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 8))
397# define EV_USE_TIMERFD EV_FEATURE_OS
398# else
399# define EV_USE_TIMERFD 0
311# endif 400# endif
312#endif 401#endif
313 402
314#if 0 /* debugging */ 403#if 0 /* debugging */
315# define EV_VERIFY 3 404# define EV_VERIFY 3
316# define EV_USE_4HEAP 1 405# define EV_USE_4HEAP 1
317# define EV_HEAP_CACHE_AT 1 406# define EV_HEAP_CACHE_AT 1
318#endif 407#endif
319 408
320#ifndef EV_VERIFY 409#ifndef EV_VERIFY
321# define EV_VERIFY !EV_MINIMAL 410# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
322#endif 411#endif
323 412
324#ifndef EV_USE_4HEAP 413#ifndef EV_USE_4HEAP
325# define EV_USE_4HEAP !EV_MINIMAL 414# define EV_USE_4HEAP EV_FEATURE_DATA
326#endif 415#endif
327 416
328#ifndef EV_HEAP_CACHE_AT 417#ifndef EV_HEAP_CACHE_AT
329# define EV_HEAP_CACHE_AT !EV_MINIMAL 418# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
419#endif
420
421#ifdef __ANDROID__
422/* supposedly, android doesn't typedef fd_mask */
423# undef EV_USE_SELECT
424# define EV_USE_SELECT 0
425/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
426# undef EV_USE_CLOCK_SYSCALL
427# define EV_USE_CLOCK_SYSCALL 0
428#endif
429
430/* aix's poll.h seems to cause lots of trouble */
431#ifdef _AIX
432/* AIX has a completely broken poll.h header */
433# undef EV_USE_POLL
434# define EV_USE_POLL 0
330#endif 435#endif
331 436
332/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 437/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
333/* which makes programs even slower. might work on other unices, too. */ 438/* which makes programs even slower. might work on other unices, too. */
334#if EV_USE_CLOCK_SYSCALL 439#if EV_USE_CLOCK_SYSCALL
335# include <syscall.h> 440# include <sys/syscall.h>
336# ifdef SYS_clock_gettime 441# ifdef SYS_clock_gettime
337# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 442# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
338# undef EV_USE_MONOTONIC 443# undef EV_USE_MONOTONIC
339# define EV_USE_MONOTONIC 1 444# define EV_USE_MONOTONIC 1
445# define EV_NEED_SYSCALL 1
340# else 446# else
341# undef EV_USE_CLOCK_SYSCALL 447# undef EV_USE_CLOCK_SYSCALL
342# define EV_USE_CLOCK_SYSCALL 0 448# define EV_USE_CLOCK_SYSCALL 0
343# endif 449# endif
344#endif 450#endif
… …
358#if !EV_STAT_ENABLE 464#if !EV_STAT_ENABLE
359# undef EV_USE_INOTIFY 465# undef EV_USE_INOTIFY
360# define EV_USE_INOTIFY 0 466# define EV_USE_INOTIFY 0
361#endif 467#endif
362 468
469#if __linux && EV_USE_IOURING
470# include <linux/version.h>
471# if LINUX_VERSION_CODE < KERNEL_VERSION(4,14,0)
472# undef EV_USE_IOURING
473# define EV_USE_IOURING 0
474# endif
475#endif
476
363#if !EV_USE_NANOSLEEP 477#if !EV_USE_NANOSLEEP
364# ifndef _WIN32 478/* hp-ux has it in sys/time.h, which we unconditionally include above */
479# if !defined _WIN32 && !defined __hpux
365# include <sys/select.h> 480# include <sys/select.h>
366# endif 481# endif
367#endif 482#endif
368 483
484#if EV_USE_LINUXAIO
485# include <sys/syscall.h>
486# if SYS_io_getevents && EV_USE_EPOLL /* linuxaio backend requires epoll backend */
487# define EV_NEED_SYSCALL 1
488# else
489# undef EV_USE_LINUXAIO
490# define EV_USE_LINUXAIO 0
491# endif
492#endif
493
494#if EV_USE_IOURING
495# include <sys/syscall.h>
496# if !SYS_io_uring_setup && __linux && !__alpha
497# define SYS_io_uring_setup 425
498# define SYS_io_uring_enter 426
499# define SYS_io_uring_wregister 427
500# endif
501# if SYS_io_uring_setup && EV_USE_EPOLL /* iouring backend requires epoll backend */
502# define EV_NEED_SYSCALL 1
503# else
504# undef EV_USE_IOURING
505# define EV_USE_IOURING 0
506# endif
507#endif
508
369#if EV_USE_INOTIFY 509#if EV_USE_INOTIFY
370# include <sys/utsname.h>
371# include <sys/statfs.h> 510# include <sys/statfs.h>
372# include <sys/inotify.h> 511# include <sys/inotify.h>
373/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 512/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
374# ifndef IN_DONT_FOLLOW 513# ifndef IN_DONT_FOLLOW
375# undef EV_USE_INOTIFY 514# undef EV_USE_INOTIFY
376# define EV_USE_INOTIFY 0 515# define EV_USE_INOTIFY 0
377# endif 516# endif
378#endif 517#endif
379 518
380#if EV_SELECT_IS_WINSOCKET
381# include <winsock.h>
382#endif
383
384#if EV_USE_EVENTFD 519#if EV_USE_EVENTFD
385/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 520/* our minimum requirement is glibc 2.7 which has the stub, but not the full header */
386# include <stdint.h> 521# include <stdint.h>
387# ifndef EFD_NONBLOCK 522# ifndef EFD_NONBLOCK
388# define EFD_NONBLOCK O_NONBLOCK 523# define EFD_NONBLOCK O_NONBLOCK
389# endif 524# endif
390# ifndef EFD_CLOEXEC 525# ifndef EFD_CLOEXEC
526# ifdef O_CLOEXEC
391# define EFD_CLOEXEC O_CLOEXEC 527# define EFD_CLOEXEC O_CLOEXEC
528# else
529# define EFD_CLOEXEC 02000000
530# endif
392# endif 531# endif
393# ifdef __cplusplus 532EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
394extern "C" { 533#endif
534
535#if EV_USE_SIGNALFD
536/* our minimum requirement is glibc 2.7 which has the stub, but not the full header */
537# include <stdint.h>
538# ifndef SFD_NONBLOCK
539# define SFD_NONBLOCK O_NONBLOCK
395# endif 540# endif
396int eventfd (unsigned int initval, int flags); 541# ifndef SFD_CLOEXEC
397# ifdef __cplusplus 542# ifdef O_CLOEXEC
398} 543# define SFD_CLOEXEC O_CLOEXEC
544# else
545# define SFD_CLOEXEC 02000000
546# endif
399# endif 547# endif
548EV_CPP (extern "C") int (signalfd) (int fd, const sigset_t *mask, int flags);
549
550struct signalfd_siginfo
551{
552 uint32_t ssi_signo;
553 char pad[128 - sizeof (uint32_t)];
554};
555#endif
556
557/* for timerfd, libev core requires TFD_TIMER_CANCEL_ON_SET &c */
558#if EV_USE_TIMERFD
559# include <sys/timerfd.h>
560/* timerfd is only used for periodics */
561# if !(defined (TFD_TIMER_CANCEL_ON_SET) && defined (TFD_CLOEXEC) && defined (TFD_NONBLOCK)) || !EV_PERIODIC_ENABLE
562# undef EV_USE_TIMERFD
563# define EV_USE_TIMERFD 0
400#endif 564# endif
401
402#if EV_USE_SIGNALFD
403# include <sys/signalfd.h>
404#endif 565#endif
405 566
406/**/ 567/*****************************************************************************/
407 568
408#if EV_VERIFY >= 3 569#if EV_VERIFY >= 3
409# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 570# define EV_FREQUENT_CHECK ev_verify (EV_A)
410#else 571#else
411# define EV_FREQUENT_CHECK do { } while (0) 572# define EV_FREQUENT_CHECK do { } while (0)
412#endif 573#endif
413 574
414/* 575/*
415 * This is used to avoid floating point rounding problems. 576 * This is used to work around floating point rounding problems.
416 * It is added to ev_rt_now when scheduling periodics
417 * to ensure progress, time-wise, even when rounding
418 * errors are against us.
419 * This value is good at least till the year 4000. 577 * This value is good at least till the year 4000.
420 * Better solutions welcome.
421 */ 578 */
422#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 579#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
580/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
423 581
424#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 582#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
425#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 583#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
426/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */ 584#define MAX_BLOCKTIME2 1500001.07 /* same, but when timerfd is used to detect jumps, also safe delay to not overflow */
427 585
586/* find a portable timestamp that is "always" in the future but fits into time_t.
587 * this is quite hard, and we are mostly guessing - we handle 32 bit signed/unsigned time_t,
588 * and sizes larger than 32 bit, and maybe the unlikely floating point time_t */
589#define EV_TSTAMP_HUGE \
590 (sizeof (time_t) >= 8 ? 10000000000000. \
591 : 0 < (time_t)4294967295 ? 4294967295. \
592 : 2147483647.) \
593
594#ifndef EV_TS_CONST
595# define EV_TS_CONST(nv) nv
596# define EV_TS_TO_MSEC(a) a * 1e3 + 0.9999
597# define EV_TS_FROM_USEC(us) us * 1e-6
598# define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
599# define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
600# define EV_TV_GET(tv) ((tv).tv_sec + (tv).tv_usec * 1e-6)
601# define EV_TS_GET(ts) ((ts).tv_sec + (ts).tv_nsec * 1e-9)
602#endif
603
604/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
605/* ECB.H BEGIN */
606/*
607 * libecb - http://software.schmorp.de/pkg/libecb
608 *
609 * Copyright (©) 2009-2015,2018-2020 Marc Alexander Lehmann <libecb@schmorp.de>
610 * Copyright (©) 2011 Emanuele Giaquinta
611 * All rights reserved.
612 *
613 * Redistribution and use in source and binary forms, with or without modifica-
614 * tion, are permitted provided that the following conditions are met:
615 *
616 * 1. Redistributions of source code must retain the above copyright notice,
617 * this list of conditions and the following disclaimer.
618 *
619 * 2. Redistributions in binary form must reproduce the above copyright
620 * notice, this list of conditions and the following disclaimer in the
621 * documentation and/or other materials provided with the distribution.
622 *
623 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
624 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
625 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
626 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
627 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
628 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
629 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
630 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
631 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
632 * OF THE POSSIBILITY OF SUCH DAMAGE.
633 *
634 * Alternatively, the contents of this file may be used under the terms of
635 * the GNU General Public License ("GPL") version 2 or any later version,
636 * in which case the provisions of the GPL are applicable instead of
637 * the above. If you wish to allow the use of your version of this file
638 * only under the terms of the GPL and not to allow others to use your
639 * version of this file under the BSD license, indicate your decision
640 * by deleting the provisions above and replace them with the notice
641 * and other provisions required by the GPL. If you do not delete the
642 * provisions above, a recipient may use your version of this file under
643 * either the BSD or the GPL.
644 */
645
646#ifndef ECB_H
647#define ECB_H
648
649/* 16 bits major, 16 bits minor */
650#define ECB_VERSION 0x00010008
651
652#include <string.h> /* for memcpy */
653
654#ifdef _WIN32
655 typedef signed char int8_t;
656 typedef unsigned char uint8_t;
657 typedef signed char int_fast8_t;
658 typedef unsigned char uint_fast8_t;
659 typedef signed short int16_t;
660 typedef unsigned short uint16_t;
661 typedef signed int int_fast16_t;
662 typedef unsigned int uint_fast16_t;
663 typedef signed int int32_t;
664 typedef unsigned int uint32_t;
665 typedef signed int int_fast32_t;
666 typedef unsigned int uint_fast32_t;
428#if __GNUC__ >= 4 667 #if __GNUC__
429# define expect(expr,value) __builtin_expect ((expr),(value)) 668 typedef signed long long int64_t;
430# define noinline __attribute__ ((noinline)) 669 typedef unsigned long long uint64_t;
670 #else /* _MSC_VER || __BORLANDC__ */
671 typedef signed __int64 int64_t;
672 typedef unsigned __int64 uint64_t;
673 #endif
674 typedef int64_t int_fast64_t;
675 typedef uint64_t uint_fast64_t;
676 #ifdef _WIN64
677 #define ECB_PTRSIZE 8
678 typedef uint64_t uintptr_t;
679 typedef int64_t intptr_t;
680 #else
681 #define ECB_PTRSIZE 4
682 typedef uint32_t uintptr_t;
683 typedef int32_t intptr_t;
684 #endif
431#else 685#else
432# define expect(expr,value) (expr) 686 #include <inttypes.h>
433# define noinline 687 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
434# if __STDC_VERSION__ < 199901L && __GNUC__ < 2 688 #define ECB_PTRSIZE 8
435# define inline 689 #else
690 #define ECB_PTRSIZE 4
691 #endif
436# endif 692#endif
693
694#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
695#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
696
697#ifndef ECB_OPTIMIZE_SIZE
698 #if __OPTIMIZE_SIZE__
699 #define ECB_OPTIMIZE_SIZE 1
700 #else
701 #define ECB_OPTIMIZE_SIZE 0
437#endif 702 #endif
703#endif
438 704
439#define expect_false(expr) expect ((expr) != 0, 0) 705/* work around x32 idiocy by defining proper macros */
440#define expect_true(expr) expect ((expr) != 0, 1) 706#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
441#define inline_size static inline 707 #if _ILP32
708 #define ECB_AMD64_X32 1
709 #else
710 #define ECB_AMD64 1
711 #endif
712#endif
442 713
443#if EV_MINIMAL 714/* many compilers define _GNUC_ to some versions but then only implement
444# define inline_speed static noinline 715 * what their idiot authors think are the "more important" extensions,
716 * causing enormous grief in return for some better fake benchmark numbers.
717 * or so.
718 * we try to detect these and simply assume they are not gcc - if they have
719 * an issue with that they should have done it right in the first place.
720 */
721#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
722 #define ECB_GCC_VERSION(major,minor) 0
445#else 723#else
724 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
725#endif
726
727#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
728
729#if __clang__ && defined __has_builtin
730 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
731#else
732 #define ECB_CLANG_BUILTIN(x) 0
733#endif
734
735#if __clang__ && defined __has_extension
736 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
737#else
738 #define ECB_CLANG_EXTENSION(x) 0
739#endif
740
741#define ECB_CPP (__cplusplus+0)
742#define ECB_CPP11 (__cplusplus >= 201103L)
743#define ECB_CPP14 (__cplusplus >= 201402L)
744#define ECB_CPP17 (__cplusplus >= 201703L)
745
746#if ECB_CPP
747 #define ECB_C 0
748 #define ECB_STDC_VERSION 0
749#else
750 #define ECB_C 1
751 #define ECB_STDC_VERSION __STDC_VERSION__
752#endif
753
754#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
755#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
756#define ECB_C17 (ECB_STDC_VERSION >= 201710L)
757
758#if ECB_CPP
759 #define ECB_EXTERN_C extern "C"
760 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
761 #define ECB_EXTERN_C_END }
762#else
763 #define ECB_EXTERN_C extern
764 #define ECB_EXTERN_C_BEG
765 #define ECB_EXTERN_C_END
766#endif
767
768/*****************************************************************************/
769
770/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
771/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
772
773#if ECB_NO_THREADS
774 #define ECB_NO_SMP 1
775#endif
776
777#if ECB_NO_SMP
778 #define ECB_MEMORY_FENCE do { } while (0)
779#endif
780
781/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
782#if __xlC__ && ECB_CPP
783 #include <builtins.h>
784#endif
785
786#if 1400 <= _MSC_VER
787 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
788#endif
789
790#ifndef ECB_MEMORY_FENCE
791 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
792 #define ECB_MEMORY_FENCE_RELAXED __asm__ __volatile__ ("" : : : "memory")
793 #if __i386 || __i386__
794 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
795 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
796 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
797 #elif ECB_GCC_AMD64
798 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
799 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
800 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
801 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
802 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
803 #elif defined __ARM_ARCH_2__ \
804 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
805 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
806 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
807 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
808 || defined __ARM_ARCH_5TEJ__
809 /* should not need any, unless running old code on newer cpu - arm doesn't support that */
810 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
811 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
812 || defined __ARM_ARCH_6T2__
813 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
814 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
815 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
816 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
817 #elif __aarch64__
818 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
819 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
820 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
821 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
822 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
823 #elif defined __s390__ || defined __s390x__
824 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
825 #elif defined __mips__
826 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
827 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
828 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
829 #elif defined __alpha__
830 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
831 #elif defined __hppa__
832 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
833 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
834 #elif defined __ia64__
835 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
836 #elif defined __m68k__
837 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
838 #elif defined __m88k__
839 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
840 #elif defined __sh__
841 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
842 #endif
843 #endif
844#endif
845
846#ifndef ECB_MEMORY_FENCE
847 #if ECB_GCC_VERSION(4,7)
848 /* see comment below (stdatomic.h) about the C11 memory model. */
849 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
850 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
851 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
852 #define ECB_MEMORY_FENCE_RELAXED __atomic_thread_fence (__ATOMIC_RELAXED)
853
854 #elif ECB_CLANG_EXTENSION(c_atomic)
855 /* see comment below (stdatomic.h) about the C11 memory model. */
856 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
857 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
858 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
859 #define ECB_MEMORY_FENCE_RELAXED __c11_atomic_thread_fence (__ATOMIC_RELAXED)
860
861 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
862 #define ECB_MEMORY_FENCE __sync_synchronize ()
863 #elif _MSC_VER >= 1500 /* VC++ 2008 */
864 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
865 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
866 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
867 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
868 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
869 #elif _MSC_VER >= 1400 /* VC++ 2005 */
870 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
871 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
872 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
873 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
874 #elif defined _WIN32
875 #include <WinNT.h>
876 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
877 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
878 #include <mbarrier.h>
879 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
880 #define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier ()
881 #define ECB_MEMORY_FENCE_RELEASE __machine_rel_barrier ()
882 #define ECB_MEMORY_FENCE_RELAXED __compiler_barrier ()
883 #elif __xlC__
884 #define ECB_MEMORY_FENCE __sync ()
885 #endif
886#endif
887
888#ifndef ECB_MEMORY_FENCE
889 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
890 /* we assume that these memory fences work on all variables/all memory accesses, */
891 /* not just C11 atomics and atomic accesses */
892 #include <stdatomic.h>
893 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
894 #define ECB_MEMORY_FENCE_ACQUIRE atomic_thread_fence (memory_order_acquire)
895 #define ECB_MEMORY_FENCE_RELEASE atomic_thread_fence (memory_order_release)
896 #endif
897#endif
898
899#ifndef ECB_MEMORY_FENCE
900 #if !ECB_AVOID_PTHREADS
901 /*
902 * if you get undefined symbol references to pthread_mutex_lock,
903 * or failure to find pthread.h, then you should implement
904 * the ECB_MEMORY_FENCE operations for your cpu/compiler
905 * OR provide pthread.h and link against the posix thread library
906 * of your system.
907 */
908 #include <pthread.h>
909 #define ECB_NEEDS_PTHREADS 1
910 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
911
912 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
913 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
914 #endif
915#endif
916
917#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
918 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
919#endif
920
921#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
922 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
923#endif
924
925#if !defined ECB_MEMORY_FENCE_RELAXED && defined ECB_MEMORY_FENCE
926 #define ECB_MEMORY_FENCE_RELAXED ECB_MEMORY_FENCE /* very heavy-handed */
927#endif
928
929/*****************************************************************************/
930
931#if ECB_CPP
932 #define ecb_inline static inline
933#elif ECB_GCC_VERSION(2,5)
934 #define ecb_inline static __inline__
935#elif ECB_C99
936 #define ecb_inline static inline
937#else
938 #define ecb_inline static
939#endif
940
941#if ECB_GCC_VERSION(3,3)
942 #define ecb_restrict __restrict__
943#elif ECB_C99
944 #define ecb_restrict restrict
945#else
946 #define ecb_restrict
947#endif
948
949typedef int ecb_bool;
950
951#define ECB_CONCAT_(a, b) a ## b
952#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
953#define ECB_STRINGIFY_(a) # a
954#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
955#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
956
957#define ecb_function_ ecb_inline
958
959#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
960 #define ecb_attribute(attrlist) __attribute__ (attrlist)
961#else
962 #define ecb_attribute(attrlist)
963#endif
964
965#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
966 #define ecb_is_constant(expr) __builtin_constant_p (expr)
967#else
968 /* possible C11 impl for integral types
969 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
970 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
971
972 #define ecb_is_constant(expr) 0
973#endif
974
975#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
976 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
977#else
978 #define ecb_expect(expr,value) (expr)
979#endif
980
981#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
982 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
983#else
984 #define ecb_prefetch(addr,rw,locality)
985#endif
986
987/* no emulation for ecb_decltype */
988#if ECB_CPP11
989 // older implementations might have problems with decltype(x)::type, work around it
990 template<class T> struct ecb_decltype_t { typedef T type; };
991 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
992#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
993 #define ecb_decltype(x) __typeof__ (x)
994#endif
995
996#if _MSC_VER >= 1300
997 #define ecb_deprecated __declspec (deprecated)
998#else
999 #define ecb_deprecated ecb_attribute ((__deprecated__))
1000#endif
1001
1002#if _MSC_VER >= 1500
1003 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
1004#elif ECB_GCC_VERSION(4,5)
1005 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
1006#else
1007 #define ecb_deprecated_message(msg) ecb_deprecated
1008#endif
1009
1010#if _MSC_VER >= 1400
1011 #define ecb_noinline __declspec (noinline)
1012#else
1013 #define ecb_noinline ecb_attribute ((__noinline__))
1014#endif
1015
1016#define ecb_unused ecb_attribute ((__unused__))
1017#define ecb_const ecb_attribute ((__const__))
1018#define ecb_pure ecb_attribute ((__pure__))
1019
1020#if ECB_C11 || __IBMC_NORETURN
1021 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
1022 #define ecb_noreturn _Noreturn
1023#elif ECB_CPP11
1024 #define ecb_noreturn [[noreturn]]
1025#elif _MSC_VER >= 1200
1026 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
1027 #define ecb_noreturn __declspec (noreturn)
1028#else
1029 #define ecb_noreturn ecb_attribute ((__noreturn__))
1030#endif
1031
1032#if ECB_GCC_VERSION(4,3)
1033 #define ecb_artificial ecb_attribute ((__artificial__))
1034 #define ecb_hot ecb_attribute ((__hot__))
1035 #define ecb_cold ecb_attribute ((__cold__))
1036#else
1037 #define ecb_artificial
1038 #define ecb_hot
1039 #define ecb_cold
1040#endif
1041
1042/* put around conditional expressions if you are very sure that the */
1043/* expression is mostly true or mostly false. note that these return */
1044/* booleans, not the expression. */
1045#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
1046#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
1047/* for compatibility to the rest of the world */
1048#define ecb_likely(expr) ecb_expect_true (expr)
1049#define ecb_unlikely(expr) ecb_expect_false (expr)
1050
1051/* count trailing zero bits and count # of one bits */
1052#if ECB_GCC_VERSION(3,4) \
1053 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
1054 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
1055 && ECB_CLANG_BUILTIN(__builtin_popcount))
1056 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
1057 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
1058 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
1059 #define ecb_ctz32(x) __builtin_ctz (x)
1060 #define ecb_ctz64(x) __builtin_ctzll (x)
1061 #define ecb_popcount32(x) __builtin_popcount (x)
1062 /* no popcountll */
1063#else
1064 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
1065 ecb_function_ ecb_const int
1066 ecb_ctz32 (uint32_t x)
1067 {
1068#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1069 unsigned long r;
1070 _BitScanForward (&r, x);
1071 return (int)r;
1072#else
1073 int r = 0;
1074
1075 x &= ~x + 1; /* this isolates the lowest bit */
1076
1077#if ECB_branchless_on_i386
1078 r += !!(x & 0xaaaaaaaa) << 0;
1079 r += !!(x & 0xcccccccc) << 1;
1080 r += !!(x & 0xf0f0f0f0) << 2;
1081 r += !!(x & 0xff00ff00) << 3;
1082 r += !!(x & 0xffff0000) << 4;
1083#else
1084 if (x & 0xaaaaaaaa) r += 1;
1085 if (x & 0xcccccccc) r += 2;
1086 if (x & 0xf0f0f0f0) r += 4;
1087 if (x & 0xff00ff00) r += 8;
1088 if (x & 0xffff0000) r += 16;
1089#endif
1090
1091 return r;
1092#endif
1093 }
1094
1095 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
1096 ecb_function_ ecb_const int
1097 ecb_ctz64 (uint64_t x)
1098 {
1099#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1100 unsigned long r;
1101 _BitScanForward64 (&r, x);
1102 return (int)r;
1103#else
1104 int shift = x & 0xffffffff ? 0 : 32;
1105 return ecb_ctz32 (x >> shift) + shift;
1106#endif
1107 }
1108
1109 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
1110 ecb_function_ ecb_const int
1111 ecb_popcount32 (uint32_t x)
1112 {
1113 x -= (x >> 1) & 0x55555555;
1114 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
1115 x = ((x >> 4) + x) & 0x0f0f0f0f;
1116 x *= 0x01010101;
1117
1118 return x >> 24;
1119 }
1120
1121 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
1122 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
1123 {
1124#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1125 unsigned long r;
1126 _BitScanReverse (&r, x);
1127 return (int)r;
1128#else
1129 int r = 0;
1130
1131 if (x >> 16) { x >>= 16; r += 16; }
1132 if (x >> 8) { x >>= 8; r += 8; }
1133 if (x >> 4) { x >>= 4; r += 4; }
1134 if (x >> 2) { x >>= 2; r += 2; }
1135 if (x >> 1) { r += 1; }
1136
1137 return r;
1138#endif
1139 }
1140
1141 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
1142 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
1143 {
1144#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1145 unsigned long r;
1146 _BitScanReverse64 (&r, x);
1147 return (int)r;
1148#else
1149 int r = 0;
1150
1151 if (x >> 32) { x >>= 32; r += 32; }
1152
1153 return r + ecb_ld32 (x);
1154#endif
1155 }
1156#endif
1157
1158ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
1159ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
1160ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
1161ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
1162
1163ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
1164ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
1165{
1166 return ( (x * 0x0802U & 0x22110U)
1167 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
1168}
1169
1170ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
1171ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
1172{
1173 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
1174 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
1175 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
1176 x = ( x >> 8 ) | ( x << 8);
1177
1178 return x;
1179}
1180
1181ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
1182ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
1183{
1184 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
1185 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
1186 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
1187 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
1188 x = ( x >> 16 ) | ( x << 16);
1189
1190 return x;
1191}
1192
1193/* popcount64 is only available on 64 bit cpus as gcc builtin */
1194/* so for this version we are lazy */
1195ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
1196ecb_function_ ecb_const int
1197ecb_popcount64 (uint64_t x)
1198{
1199 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
1200}
1201
1202ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
1203ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
1204ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
1205ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
1206ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
1207ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
1208ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
1209ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
1210
1211ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
1212ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
1213ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
1214ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
1215ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
1216ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
1217ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
1218ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
1219
1220#if ECB_CPP
1221
1222inline uint8_t ecb_ctz (uint8_t v) { return ecb_ctz32 (v); }
1223inline uint16_t ecb_ctz (uint16_t v) { return ecb_ctz32 (v); }
1224inline uint32_t ecb_ctz (uint32_t v) { return ecb_ctz32 (v); }
1225inline uint64_t ecb_ctz (uint64_t v) { return ecb_ctz64 (v); }
1226
1227inline bool ecb_is_pot (uint8_t v) { return ecb_is_pot32 (v); }
1228inline bool ecb_is_pot (uint16_t v) { return ecb_is_pot32 (v); }
1229inline bool ecb_is_pot (uint32_t v) { return ecb_is_pot32 (v); }
1230inline bool ecb_is_pot (uint64_t v) { return ecb_is_pot64 (v); }
1231
1232inline int ecb_ld (uint8_t v) { return ecb_ld32 (v); }
1233inline int ecb_ld (uint16_t v) { return ecb_ld32 (v); }
1234inline int ecb_ld (uint32_t v) { return ecb_ld32 (v); }
1235inline int ecb_ld (uint64_t v) { return ecb_ld64 (v); }
1236
1237inline int ecb_popcount (uint8_t v) { return ecb_popcount32 (v); }
1238inline int ecb_popcount (uint16_t v) { return ecb_popcount32 (v); }
1239inline int ecb_popcount (uint32_t v) { return ecb_popcount32 (v); }
1240inline int ecb_popcount (uint64_t v) { return ecb_popcount64 (v); }
1241
1242inline uint8_t ecb_bitrev (uint8_t v) { return ecb_bitrev8 (v); }
1243inline uint16_t ecb_bitrev (uint16_t v) { return ecb_bitrev16 (v); }
1244inline uint32_t ecb_bitrev (uint32_t v) { return ecb_bitrev32 (v); }
1245
1246inline uint8_t ecb_rotl (uint8_t v, unsigned int count) { return ecb_rotl8 (v, count); }
1247inline uint16_t ecb_rotl (uint16_t v, unsigned int count) { return ecb_rotl16 (v, count); }
1248inline uint32_t ecb_rotl (uint32_t v, unsigned int count) { return ecb_rotl32 (v, count); }
1249inline uint64_t ecb_rotl (uint64_t v, unsigned int count) { return ecb_rotl64 (v, count); }
1250
1251inline uint8_t ecb_rotr (uint8_t v, unsigned int count) { return ecb_rotr8 (v, count); }
1252inline uint16_t ecb_rotr (uint16_t v, unsigned int count) { return ecb_rotr16 (v, count); }
1253inline uint32_t ecb_rotr (uint32_t v, unsigned int count) { return ecb_rotr32 (v, count); }
1254inline uint64_t ecb_rotr (uint64_t v, unsigned int count) { return ecb_rotr64 (v, count); }
1255
1256#endif
1257
1258#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1259 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1260 #define ecb_bswap16(x) __builtin_bswap16 (x)
1261 #else
1262 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1263 #endif
1264 #define ecb_bswap32(x) __builtin_bswap32 (x)
1265 #define ecb_bswap64(x) __builtin_bswap64 (x)
1266#elif _MSC_VER
1267 #include <stdlib.h>
1268 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1269 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1270 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
1271#else
1272 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
1273 ecb_function_ ecb_const uint16_t
1274 ecb_bswap16 (uint16_t x)
1275 {
1276 return ecb_rotl16 (x, 8);
1277 }
1278
1279 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
1280 ecb_function_ ecb_const uint32_t
1281 ecb_bswap32 (uint32_t x)
1282 {
1283 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
1284 }
1285
1286 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
1287 ecb_function_ ecb_const uint64_t
1288 ecb_bswap64 (uint64_t x)
1289 {
1290 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
1291 }
1292#endif
1293
1294#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
1295 #define ecb_unreachable() __builtin_unreachable ()
1296#else
1297 /* this seems to work fine, but gcc always emits a warning for it :/ */
1298 ecb_inline ecb_noreturn void ecb_unreachable (void);
1299 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
1300#endif
1301
1302/* try to tell the compiler that some condition is definitely true */
1303#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
1304
1305ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
1306ecb_inline ecb_const uint32_t
1307ecb_byteorder_helper (void)
1308{
1309 /* the union code still generates code under pressure in gcc, */
1310 /* but less than using pointers, and always seems to */
1311 /* successfully return a constant. */
1312 /* the reason why we have this horrible preprocessor mess */
1313 /* is to avoid it in all cases, at least on common architectures */
1314 /* or when using a recent enough gcc version (>= 4.6) */
1315#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1316 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1317 #define ECB_LITTLE_ENDIAN 1
1318 return 0x44332211;
1319#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1320 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1321 #define ECB_BIG_ENDIAN 1
1322 return 0x11223344;
1323#else
1324 union
1325 {
1326 uint8_t c[4];
1327 uint32_t u;
1328 } u = { 0x11, 0x22, 0x33, 0x44 };
1329 return u.u;
1330#endif
1331}
1332
1333ecb_inline ecb_const ecb_bool ecb_big_endian (void);
1334ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
1335ecb_inline ecb_const ecb_bool ecb_little_endian (void);
1336ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
1337
1338/*****************************************************************************/
1339/* unaligned load/store */
1340
1341ecb_inline uint_fast16_t ecb_be_u16_to_host (uint_fast16_t v) { return ecb_little_endian () ? ecb_bswap16 (v) : v; }
1342ecb_inline uint_fast32_t ecb_be_u32_to_host (uint_fast32_t v) { return ecb_little_endian () ? ecb_bswap32 (v) : v; }
1343ecb_inline uint_fast64_t ecb_be_u64_to_host (uint_fast64_t v) { return ecb_little_endian () ? ecb_bswap64 (v) : v; }
1344
1345ecb_inline uint_fast16_t ecb_le_u16_to_host (uint_fast16_t v) { return ecb_big_endian () ? ecb_bswap16 (v) : v; }
1346ecb_inline uint_fast32_t ecb_le_u32_to_host (uint_fast32_t v) { return ecb_big_endian () ? ecb_bswap32 (v) : v; }
1347ecb_inline uint_fast64_t ecb_le_u64_to_host (uint_fast64_t v) { return ecb_big_endian () ? ecb_bswap64 (v) : v; }
1348
1349ecb_inline uint_fast16_t ecb_peek_u16_u (const void *ptr) { uint16_t v; memcpy (&v, ptr, sizeof (v)); return v; }
1350ecb_inline uint_fast32_t ecb_peek_u32_u (const void *ptr) { uint32_t v; memcpy (&v, ptr, sizeof (v)); return v; }
1351ecb_inline uint_fast64_t ecb_peek_u64_u (const void *ptr) { uint64_t v; memcpy (&v, ptr, sizeof (v)); return v; }
1352
1353ecb_inline uint_fast16_t ecb_peek_be_u16_u (const void *ptr) { return ecb_be_u16_to_host (ecb_peek_u16_u (ptr)); }
1354ecb_inline uint_fast32_t ecb_peek_be_u32_u (const void *ptr) { return ecb_be_u32_to_host (ecb_peek_u32_u (ptr)); }
1355ecb_inline uint_fast64_t ecb_peek_be_u64_u (const void *ptr) { return ecb_be_u64_to_host (ecb_peek_u64_u (ptr)); }
1356
1357ecb_inline uint_fast16_t ecb_peek_le_u16_u (const void *ptr) { return ecb_le_u16_to_host (ecb_peek_u16_u (ptr)); }
1358ecb_inline uint_fast32_t ecb_peek_le_u32_u (const void *ptr) { return ecb_le_u32_to_host (ecb_peek_u32_u (ptr)); }
1359ecb_inline uint_fast64_t ecb_peek_le_u64_u (const void *ptr) { return ecb_le_u64_to_host (ecb_peek_u64_u (ptr)); }
1360
1361ecb_inline uint_fast16_t ecb_host_to_be_u16 (uint_fast16_t v) { return ecb_little_endian () ? ecb_bswap16 (v) : v; }
1362ecb_inline uint_fast32_t ecb_host_to_be_u32 (uint_fast32_t v) { return ecb_little_endian () ? ecb_bswap32 (v) : v; }
1363ecb_inline uint_fast64_t ecb_host_to_be_u64 (uint_fast64_t v) { return ecb_little_endian () ? ecb_bswap64 (v) : v; }
1364
1365ecb_inline uint_fast16_t ecb_host_to_le_u16 (uint_fast16_t v) { return ecb_big_endian () ? ecb_bswap16 (v) : v; }
1366ecb_inline uint_fast32_t ecb_host_to_le_u32 (uint_fast32_t v) { return ecb_big_endian () ? ecb_bswap32 (v) : v; }
1367ecb_inline uint_fast64_t ecb_host_to_le_u64 (uint_fast64_t v) { return ecb_big_endian () ? ecb_bswap64 (v) : v; }
1368
1369ecb_inline void ecb_poke_u16_u (void *ptr, uint16_t v) { memcpy (ptr, &v, sizeof (v)); }
1370ecb_inline void ecb_poke_u32_u (void *ptr, uint32_t v) { memcpy (ptr, &v, sizeof (v)); }
1371ecb_inline void ecb_poke_u64_u (void *ptr, uint64_t v) { memcpy (ptr, &v, sizeof (v)); }
1372
1373ecb_inline void ecb_poke_be_u16_u (void *ptr, uint_fast16_t v) { ecb_poke_u16_u (ptr, ecb_host_to_be_u16 (v)); }
1374ecb_inline void ecb_poke_be_u32_u (void *ptr, uint_fast32_t v) { ecb_poke_u32_u (ptr, ecb_host_to_be_u32 (v)); }
1375ecb_inline void ecb_poke_be_u64_u (void *ptr, uint_fast64_t v) { ecb_poke_u64_u (ptr, ecb_host_to_be_u64 (v)); }
1376
1377ecb_inline void ecb_poke_le_u16_u (void *ptr, uint_fast16_t v) { ecb_poke_u16_u (ptr, ecb_host_to_le_u16 (v)); }
1378ecb_inline void ecb_poke_le_u32_u (void *ptr, uint_fast32_t v) { ecb_poke_u32_u (ptr, ecb_host_to_le_u32 (v)); }
1379ecb_inline void ecb_poke_le_u64_u (void *ptr, uint_fast64_t v) { ecb_poke_u64_u (ptr, ecb_host_to_le_u64 (v)); }
1380
1381#if ECB_CPP
1382
1383inline uint8_t ecb_bswap (uint8_t v) { return v; }
1384inline uint16_t ecb_bswap (uint16_t v) { return ecb_bswap16 (v); }
1385inline uint32_t ecb_bswap (uint32_t v) { return ecb_bswap32 (v); }
1386inline uint64_t ecb_bswap (uint64_t v) { return ecb_bswap64 (v); }
1387
1388template<typename T> inline T ecb_be_to_host (T v) { return ecb_little_endian () ? ecb_bswap (v) : v; }
1389template<typename T> inline T ecb_le_to_host (T v) { return ecb_big_endian () ? ecb_bswap (v) : v; }
1390template<typename T> inline T ecb_peek (const void *ptr) { return *(const T *)ptr; }
1391template<typename T> inline T ecb_peek_be (const void *ptr) { return ecb_be_to_host (ecb_peek <T> (ptr)); }
1392template<typename T> inline T ecb_peek_le (const void *ptr) { return ecb_le_to_host (ecb_peek <T> (ptr)); }
1393template<typename T> inline T ecb_peek_u (const void *ptr) { T v; memcpy (&v, ptr, sizeof (v)); return v; }
1394template<typename T> inline T ecb_peek_be_u (const void *ptr) { return ecb_be_to_host (ecb_peek_u<T> (ptr)); }
1395template<typename T> inline T ecb_peek_le_u (const void *ptr) { return ecb_le_to_host (ecb_peek_u<T> (ptr)); }
1396
1397template<typename T> inline T ecb_host_to_be (T v) { return ecb_little_endian () ? ecb_bswap (v) : v; }
1398template<typename T> inline T ecb_host_to_le (T v) { return ecb_big_endian () ? ecb_bswap (v) : v; }
1399template<typename T> inline void ecb_poke (void *ptr, T v) { *(T *)ptr = v; }
1400template<typename T> inline void ecb_poke_be (void *ptr, T v) { return ecb_poke <T> (ptr, ecb_host_to_be (v)); }
1401template<typename T> inline void ecb_poke_le (void *ptr, T v) { return ecb_poke <T> (ptr, ecb_host_to_le (v)); }
1402template<typename T> inline void ecb_poke_u (void *ptr, T v) { memcpy (ptr, &v, sizeof (v)); }
1403template<typename T> inline void ecb_poke_be_u (void *ptr, T v) { return ecb_poke_u<T> (ptr, ecb_host_to_be (v)); }
1404template<typename T> inline void ecb_poke_le_u (void *ptr, T v) { return ecb_poke_u<T> (ptr, ecb_host_to_le (v)); }
1405
1406#endif
1407
1408/*****************************************************************************/
1409
1410#if ECB_GCC_VERSION(3,0) || ECB_C99
1411 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1412#else
1413 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1414#endif
1415
1416#if ECB_CPP
1417 template<typename T>
1418 static inline T ecb_div_rd (T val, T div)
1419 {
1420 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1421 }
1422 template<typename T>
1423 static inline T ecb_div_ru (T val, T div)
1424 {
1425 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1426 }
1427#else
1428 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1429 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1430#endif
1431
1432#if ecb_cplusplus_does_not_suck
1433 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1434 template<typename T, int N>
1435 static inline int ecb_array_length (const T (&arr)[N])
1436 {
1437 return N;
1438 }
1439#else
1440 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1441#endif
1442
1443/*****************************************************************************/
1444
1445ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1446ecb_function_ ecb_const uint32_t
1447ecb_binary16_to_binary32 (uint32_t x)
1448{
1449 unsigned int s = (x & 0x8000) << (31 - 15);
1450 int e = (x >> 10) & 0x001f;
1451 unsigned int m = x & 0x03ff;
1452
1453 if (ecb_expect_false (e == 31))
1454 /* infinity or NaN */
1455 e = 255 - (127 - 15);
1456 else if (ecb_expect_false (!e))
1457 {
1458 if (ecb_expect_true (!m))
1459 /* zero, handled by code below by forcing e to 0 */
1460 e = 0 - (127 - 15);
1461 else
1462 {
1463 /* subnormal, renormalise */
1464 unsigned int s = 10 - ecb_ld32 (m);
1465
1466 m = (m << s) & 0x3ff; /* mask implicit bit */
1467 e -= s - 1;
1468 }
1469 }
1470
1471 /* e and m now are normalised, or zero, (or inf or nan) */
1472 e += 127 - 15;
1473
1474 return s | (e << 23) | (m << (23 - 10));
1475}
1476
1477ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1478ecb_function_ ecb_const uint16_t
1479ecb_binary32_to_binary16 (uint32_t x)
1480{
1481 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1482 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1483 unsigned int m = x & 0x007fffff;
1484
1485 x &= 0x7fffffff;
1486
1487 /* if it's within range of binary16 normals, use fast path */
1488 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1489 {
1490 /* mantissa round-to-even */
1491 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1492
1493 /* handle overflow */
1494 if (ecb_expect_false (m >= 0x00800000))
1495 {
1496 m >>= 1;
1497 e += 1;
1498 }
1499
1500 return s | (e << 10) | (m >> (23 - 10));
1501 }
1502
1503 /* handle large numbers and infinity */
1504 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1505 return s | 0x7c00;
1506
1507 /* handle zero, subnormals and small numbers */
1508 if (ecb_expect_true (x < 0x38800000))
1509 {
1510 /* zero */
1511 if (ecb_expect_true (!x))
1512 return s;
1513
1514 /* handle subnormals */
1515
1516 /* too small, will be zero */
1517 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1518 return s;
1519
1520 m |= 0x00800000; /* make implicit bit explicit */
1521
1522 /* very tricky - we need to round to the nearest e (+10) bit value */
1523 {
1524 unsigned int bits = 14 - e;
1525 unsigned int half = (1 << (bits - 1)) - 1;
1526 unsigned int even = (m >> bits) & 1;
1527
1528 /* if this overflows, we will end up with a normalised number */
1529 m = (m + half + even) >> bits;
1530 }
1531
1532 return s | m;
1533 }
1534
1535 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1536 m >>= 13;
1537
1538 return s | 0x7c00 | m | !m;
1539}
1540
1541/*******************************************************************************/
1542/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1543
1544/* basically, everything uses "ieee pure-endian" floating point numbers */
1545/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1546#if 0 \
1547 || __i386 || __i386__ \
1548 || ECB_GCC_AMD64 \
1549 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1550 || defined __s390__ || defined __s390x__ \
1551 || defined __mips__ \
1552 || defined __alpha__ \
1553 || defined __hppa__ \
1554 || defined __ia64__ \
1555 || defined __m68k__ \
1556 || defined __m88k__ \
1557 || defined __sh__ \
1558 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1559 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1560 || defined __aarch64__
1561 #define ECB_STDFP 1
1562#else
1563 #define ECB_STDFP 0
1564#endif
1565
1566#ifndef ECB_NO_LIBM
1567
1568 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1569
1570 /* only the oldest of old doesn't have this one. solaris. */
1571 #ifdef INFINITY
1572 #define ECB_INFINITY INFINITY
1573 #else
1574 #define ECB_INFINITY HUGE_VAL
1575 #endif
1576
1577 #ifdef NAN
1578 #define ECB_NAN NAN
1579 #else
1580 #define ECB_NAN ECB_INFINITY
1581 #endif
1582
1583 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1584 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1585 #define ecb_frexpf(x,e) frexpf ((x), (e))
1586 #else
1587 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1588 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1589 #endif
1590
1591 /* convert a float to ieee single/binary32 */
1592 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1593 ecb_function_ ecb_const uint32_t
1594 ecb_float_to_binary32 (float x)
1595 {
1596 uint32_t r;
1597
1598 #if ECB_STDFP
1599 memcpy (&r, &x, 4);
1600 #else
1601 /* slow emulation, works for anything but -0 */
1602 uint32_t m;
1603 int e;
1604
1605 if (x == 0e0f ) return 0x00000000U;
1606 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1607 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1608 if (x != x ) return 0x7fbfffffU;
1609
1610 m = ecb_frexpf (x, &e) * 0x1000000U;
1611
1612 r = m & 0x80000000U;
1613
1614 if (r)
1615 m = -m;
1616
1617 if (e <= -126)
1618 {
1619 m &= 0xffffffU;
1620 m >>= (-125 - e);
1621 e = -126;
1622 }
1623
1624 r |= (e + 126) << 23;
1625 r |= m & 0x7fffffU;
1626 #endif
1627
1628 return r;
1629 }
1630
1631 /* converts an ieee single/binary32 to a float */
1632 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1633 ecb_function_ ecb_const float
1634 ecb_binary32_to_float (uint32_t x)
1635 {
1636 float r;
1637
1638 #if ECB_STDFP
1639 memcpy (&r, &x, 4);
1640 #else
1641 /* emulation, only works for normals and subnormals and +0 */
1642 int neg = x >> 31;
1643 int e = (x >> 23) & 0xffU;
1644
1645 x &= 0x7fffffU;
1646
1647 if (e)
1648 x |= 0x800000U;
1649 else
1650 e = 1;
1651
1652 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1653 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1654
1655 r = neg ? -r : r;
1656 #endif
1657
1658 return r;
1659 }
1660
1661 /* convert a double to ieee double/binary64 */
1662 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1663 ecb_function_ ecb_const uint64_t
1664 ecb_double_to_binary64 (double x)
1665 {
1666 uint64_t r;
1667
1668 #if ECB_STDFP
1669 memcpy (&r, &x, 8);
1670 #else
1671 /* slow emulation, works for anything but -0 */
1672 uint64_t m;
1673 int e;
1674
1675 if (x == 0e0 ) return 0x0000000000000000U;
1676 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1677 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1678 if (x != x ) return 0X7ff7ffffffffffffU;
1679
1680 m = frexp (x, &e) * 0x20000000000000U;
1681
1682 r = m & 0x8000000000000000;;
1683
1684 if (r)
1685 m = -m;
1686
1687 if (e <= -1022)
1688 {
1689 m &= 0x1fffffffffffffU;
1690 m >>= (-1021 - e);
1691 e = -1022;
1692 }
1693
1694 r |= ((uint64_t)(e + 1022)) << 52;
1695 r |= m & 0xfffffffffffffU;
1696 #endif
1697
1698 return r;
1699 }
1700
1701 /* converts an ieee double/binary64 to a double */
1702 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1703 ecb_function_ ecb_const double
1704 ecb_binary64_to_double (uint64_t x)
1705 {
1706 double r;
1707
1708 #if ECB_STDFP
1709 memcpy (&r, &x, 8);
1710 #else
1711 /* emulation, only works for normals and subnormals and +0 */
1712 int neg = x >> 63;
1713 int e = (x >> 52) & 0x7ffU;
1714
1715 x &= 0xfffffffffffffU;
1716
1717 if (e)
1718 x |= 0x10000000000000U;
1719 else
1720 e = 1;
1721
1722 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1723 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1724
1725 r = neg ? -r : r;
1726 #endif
1727
1728 return r;
1729 }
1730
1731 /* convert a float to ieee half/binary16 */
1732 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1733 ecb_function_ ecb_const uint16_t
1734 ecb_float_to_binary16 (float x)
1735 {
1736 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1737 }
1738
1739 /* convert an ieee half/binary16 to float */
1740 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1741 ecb_function_ ecb_const float
1742 ecb_binary16_to_float (uint16_t x)
1743 {
1744 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1745 }
1746
1747#endif
1748
1749#endif
1750
1751/* ECB.H END */
1752
1753#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1754/* if your architecture doesn't need memory fences, e.g. because it is
1755 * single-cpu/core, or if you use libev in a project that doesn't use libev
1756 * from multiple threads, then you can define ECB_NO_THREADS when compiling
1757 * libev, in which cases the memory fences become nops.
1758 * alternatively, you can remove this #error and link against libpthread,
1759 * which will then provide the memory fences.
1760 */
1761# error "memory fences not defined for your architecture, please report"
1762#endif
1763
1764#ifndef ECB_MEMORY_FENCE
1765# define ECB_MEMORY_FENCE do { } while (0)
1766# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1767# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1768#endif
1769
1770#define inline_size ecb_inline
1771
1772#if EV_FEATURE_CODE
446# define inline_speed static inline 1773# define inline_speed ecb_inline
1774#else
1775# define inline_speed ecb_noinline static
447#endif 1776#endif
1777
1778/*****************************************************************************/
1779/* raw syscall wrappers */
1780
1781#if EV_NEED_SYSCALL
1782
1783#include <sys/syscall.h>
1784
1785/*
1786 * define some syscall wrappers for common architectures
1787 * this is mostly for nice looks during debugging, not performance.
1788 * our syscalls return < 0, not == -1, on error. which is good
1789 * enough for linux aio.
1790 * TODO: arm is also common nowadays, maybe even mips and x86
1791 * TODO: after implementing this, it suddenly looks like overkill, but its hard to remove...
1792 */
1793#if __GNUC__ && __linux && ECB_AMD64 && !EV_FEATURE_CODE
1794 /* the costly errno access probably kills this for size optimisation */
1795
1796 #define ev_syscall(nr,narg,arg1,arg2,arg3,arg4,arg5,arg6) \
1797 ({ \
1798 long res; \
1799 register unsigned long r6 __asm__ ("r9" ); \
1800 register unsigned long r5 __asm__ ("r8" ); \
1801 register unsigned long r4 __asm__ ("r10"); \
1802 register unsigned long r3 __asm__ ("rdx"); \
1803 register unsigned long r2 __asm__ ("rsi"); \
1804 register unsigned long r1 __asm__ ("rdi"); \
1805 if (narg >= 6) r6 = (unsigned long)(arg6); \
1806 if (narg >= 5) r5 = (unsigned long)(arg5); \
1807 if (narg >= 4) r4 = (unsigned long)(arg4); \
1808 if (narg >= 3) r3 = (unsigned long)(arg3); \
1809 if (narg >= 2) r2 = (unsigned long)(arg2); \
1810 if (narg >= 1) r1 = (unsigned long)(arg1); \
1811 __asm__ __volatile__ ( \
1812 "syscall\n\t" \
1813 : "=a" (res) \
1814 : "0" (nr), "r" (r1), "r" (r2), "r" (r3), "r" (r4), "r" (r5) \
1815 : "cc", "r11", "cx", "memory"); \
1816 errno = -res; \
1817 res; \
1818 })
1819
1820#endif
1821
1822#ifdef ev_syscall
1823 #define ev_syscall0(nr) ev_syscall (nr, 0, 0, 0, 0, 0, 0, 0)
1824 #define ev_syscall1(nr,arg1) ev_syscall (nr, 1, arg1, 0, 0, 0, 0, 0)
1825 #define ev_syscall2(nr,arg1,arg2) ev_syscall (nr, 2, arg1, arg2, 0, 0, 0, 0)
1826 #define ev_syscall3(nr,arg1,arg2,arg3) ev_syscall (nr, 3, arg1, arg2, arg3, 0, 0, 0)
1827 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) ev_syscall (nr, 3, arg1, arg2, arg3, arg4, 0, 0)
1828 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) ev_syscall (nr, 5, arg1, arg2, arg3, arg4, arg5, 0)
1829 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) ev_syscall (nr, 6, arg1, arg2, arg3, arg4, arg5,arg6)
1830#else
1831 #define ev_syscall0(nr) syscall (nr)
1832 #define ev_syscall1(nr,arg1) syscall (nr, arg1)
1833 #define ev_syscall2(nr,arg1,arg2) syscall (nr, arg1, arg2)
1834 #define ev_syscall3(nr,arg1,arg2,arg3) syscall (nr, arg1, arg2, arg3)
1835 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) syscall (nr, arg1, arg2, arg3, arg4)
1836 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) syscall (nr, arg1, arg2, arg3, arg4, arg5)
1837 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) syscall (nr, arg1, arg2, arg3, arg4, arg5,arg6)
1838#endif
1839
1840#endif
1841
1842/*****************************************************************************/
448 1843
449#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1844#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
450 1845
451#if EV_MINPRI == EV_MAXPRI 1846#if EV_MINPRI == EV_MAXPRI
452# define ABSPRI(w) (((W)w), 0) 1847# define ABSPRI(w) (((W)w), 0)
453#else 1848#else
454# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1849# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
455#endif 1850#endif
456 1851
457#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1852#define EMPTY /* required for microsofts broken pseudo-c compiler */
458#define EMPTY2(a,b) /* used to suppress some warnings */
459 1853
460typedef ev_watcher *W; 1854typedef ev_watcher *W;
461typedef ev_watcher_list *WL; 1855typedef ev_watcher_list *WL;
462typedef ev_watcher_time *WT; 1856typedef ev_watcher_time *WT;
463 1857
464#define ev_active(w) ((W)(w))->active 1858#define ev_active(w) ((W)(w))->active
465#define ev_at(w) ((WT)(w))->at 1859#define ev_at(w) ((WT)(w))->at
466 1860
467#if EV_USE_REALTIME 1861#if EV_USE_REALTIME
468/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 1862/* sig_atomic_t is used to avoid per-thread variables or locking but still */
469/* giving it a reasonably high chance of working on typical architetcures */ 1863/* giving it a reasonably high chance of working on typical architectures */
470static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 1864static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
471#endif 1865#endif
472 1866
473#if EV_USE_MONOTONIC 1867#if EV_USE_MONOTONIC
474static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 1868static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
475#endif 1869#endif
476 1870
1871#ifndef EV_FD_TO_WIN32_HANDLE
1872# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
1873#endif
1874#ifndef EV_WIN32_HANDLE_TO_FD
1875# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
1876#endif
1877#ifndef EV_WIN32_CLOSE_FD
1878# define EV_WIN32_CLOSE_FD(fd) close (fd)
1879#endif
1880
477#ifdef _WIN32 1881#ifdef _WIN32
478# include "ev_win32.c" 1882# include "ev_win32.c"
479#endif 1883#endif
480 1884
481/*****************************************************************************/ 1885/*****************************************************************************/
482 1886
1887#if EV_USE_LINUXAIO
1888# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
1889#endif
1890
1891/* define a suitable floor function (only used by periodics atm) */
1892
1893#if EV_USE_FLOOR
1894# include <math.h>
1895# define ev_floor(v) floor (v)
1896#else
1897
1898#include <float.h>
1899
1900/* a floor() replacement function, should be independent of ev_tstamp type */
1901ecb_noinline
1902static ev_tstamp
1903ev_floor (ev_tstamp v)
1904{
1905 /* the choice of shift factor is not terribly important */
1906#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1907 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1908#else
1909 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1910#endif
1911
1912 /* special treatment for negative arguments */
1913 if (ecb_expect_false (v < 0.))
1914 {
1915 ev_tstamp f = -ev_floor (-v);
1916
1917 return f - (f == v ? 0 : 1);
1918 }
1919
1920 /* argument too large for an unsigned long? then reduce it */
1921 if (ecb_expect_false (v >= shift))
1922 {
1923 ev_tstamp f;
1924
1925 if (v == v - 1.)
1926 return v; /* very large numbers are assumed to be integer */
1927
1928 f = shift * ev_floor (v * (1. / shift));
1929 return f + ev_floor (v - f);
1930 }
1931
1932 /* fits into an unsigned long */
1933 return (unsigned long)v;
1934}
1935
1936#endif
1937
1938/*****************************************************************************/
1939
1940#ifdef __linux
1941# include <sys/utsname.h>
1942#endif
1943
1944ecb_noinline ecb_cold
1945static unsigned int
1946ev_linux_version (void)
1947{
1948#ifdef __linux
1949 unsigned int v = 0;
1950 struct utsname buf;
1951 int i;
1952 char *p = buf.release;
1953
1954 if (uname (&buf))
1955 return 0;
1956
1957 for (i = 3+1; --i; )
1958 {
1959 unsigned int c = 0;
1960
1961 for (;;)
1962 {
1963 if (*p >= '0' && *p <= '9')
1964 c = c * 10 + *p++ - '0';
1965 else
1966 {
1967 p += *p == '.';
1968 break;
1969 }
1970 }
1971
1972 v = (v << 8) | c;
1973 }
1974
1975 return v;
1976#else
1977 return 0;
1978#endif
1979}
1980
1981/*****************************************************************************/
1982
1983#if EV_AVOID_STDIO
1984ecb_noinline ecb_cold
1985static void
1986ev_printerr (const char *msg)
1987{
1988 write (STDERR_FILENO, msg, strlen (msg));
1989}
1990#endif
1991
483static void (*syserr_cb)(const char *msg); 1992static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
484 1993
1994ecb_cold
485void 1995void
486ev_set_syserr_cb (void (*cb)(const char *msg)) 1996ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
487{ 1997{
488 syserr_cb = cb; 1998 syserr_cb = cb;
489} 1999}
490 2000
491static void noinline 2001ecb_noinline ecb_cold
2002static void
492ev_syserr (const char *msg) 2003ev_syserr (const char *msg)
493{ 2004{
494 if (!msg) 2005 if (!msg)
495 msg = "(libev) system error"; 2006 msg = "(libev) system error";
496 2007
497 if (syserr_cb) 2008 if (syserr_cb)
498 syserr_cb (msg); 2009 syserr_cb (msg);
499 else 2010 else
500 { 2011 {
2012#if EV_AVOID_STDIO
2013 ev_printerr (msg);
2014 ev_printerr (": ");
2015 ev_printerr (strerror (errno));
2016 ev_printerr ("\n");
2017#else
501 perror (msg); 2018 perror (msg);
2019#endif
502 abort (); 2020 abort ();
503 } 2021 }
504} 2022}
505 2023
506static void * 2024static void *
507ev_realloc_emul (void *ptr, long size) 2025ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
508{ 2026{
509 /* some systems, notably openbsd and darwin, fail to properly 2027 /* some systems, notably openbsd and darwin, fail to properly
510 * implement realloc (x, 0) (as required by both ansi c-98 and 2028 * implement realloc (x, 0) (as required by both ansi c-89 and
511 * the single unix specification, so work around them here. 2029 * the single unix specification, so work around them here.
2030 * recently, also (at least) fedora and debian started breaking it,
2031 * despite documenting it otherwise.
512 */ 2032 */
513 2033
514 if (size) 2034 if (size)
515 return realloc (ptr, size); 2035 return realloc (ptr, size);
516 2036
517 free (ptr); 2037 free (ptr);
518 return 0; 2038 return 0;
519} 2039}
520 2040
521static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 2041static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
522 2042
2043ecb_cold
523void 2044void
524ev_set_allocator (void *(*cb)(void *ptr, long size)) 2045ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
525{ 2046{
526 alloc = cb; 2047 alloc = cb;
527} 2048}
528 2049
529inline_speed void * 2050inline_speed void *
… …
531{ 2052{
532 ptr = alloc (ptr, size); 2053 ptr = alloc (ptr, size);
533 2054
534 if (!ptr && size) 2055 if (!ptr && size)
535 { 2056 {
2057#if EV_AVOID_STDIO
2058 ev_printerr ("(libev) memory allocation failed, aborting.\n");
2059#else
536 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 2060 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
2061#endif
537 abort (); 2062 abort ();
538 } 2063 }
539 2064
540 return ptr; 2065 return ptr;
541} 2066}
… …
552typedef struct 2077typedef struct
553{ 2078{
554 WL head; 2079 WL head;
555 unsigned char events; /* the events watched for */ 2080 unsigned char events; /* the events watched for */
556 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */ 2081 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
557 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 2082 unsigned char emask; /* some backends store the actual kernel mask in here */
558 unsigned char unused; 2083 unsigned char eflags; /* flags field for use by backends */
559#if EV_USE_EPOLL 2084#if EV_USE_EPOLL
560 unsigned int egen; /* generation counter to counter epoll bugs */ 2085 unsigned int egen; /* generation counter to counter epoll bugs */
561#endif 2086#endif
562#if EV_SELECT_IS_WINSOCKET 2087#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
563 SOCKET handle; 2088 SOCKET handle;
2089#endif
2090#if EV_USE_IOCP
2091 OVERLAPPED or, ow;
564#endif 2092#endif
565} ANFD; 2093} ANFD;
566 2094
567/* stores the pending event set for a given watcher */ 2095/* stores the pending event set for a given watcher */
568typedef struct 2096typedef struct
… …
610 #undef VAR 2138 #undef VAR
611 }; 2139 };
612 #include "ev_wrap.h" 2140 #include "ev_wrap.h"
613 2141
614 static struct ev_loop default_loop_struct; 2142 static struct ev_loop default_loop_struct;
615 struct ev_loop *ev_default_loop_ptr; 2143 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
616 2144
617#else 2145#else
618 2146
619 ev_tstamp ev_rt_now; 2147 EV_API_DECL ev_tstamp ev_rt_now = EV_TS_CONST (0.); /* needs to be initialised to make it a definition despite extern */
620 #define VAR(name,decl) static decl; 2148 #define VAR(name,decl) static decl;
621 #include "ev_vars.h" 2149 #include "ev_vars.h"
622 #undef VAR 2150 #undef VAR
623 2151
624 static int ev_default_loop_ptr; 2152 static int ev_default_loop_ptr;
625 2153
626#endif 2154#endif
627 2155
628#if EV_MINIMAL < 2 2156#if EV_FEATURE_API
629# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 2157# define EV_RELEASE_CB if (ecb_expect_false (release_cb)) release_cb (EV_A)
630# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 2158# define EV_ACQUIRE_CB if (ecb_expect_false (acquire_cb)) acquire_cb (EV_A)
631# define EV_INVOKE_PENDING invoke_cb (EV_A) 2159# define EV_INVOKE_PENDING invoke_cb (EV_A)
632#else 2160#else
633# define EV_RELEASE_CB (void)0 2161# define EV_RELEASE_CB (void)0
634# define EV_ACQUIRE_CB (void)0 2162# define EV_ACQUIRE_CB (void)0
635# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 2163# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
636#endif 2164#endif
637 2165
638#define EVUNLOOP_RECURSE 0x80 2166#define EVBREAK_RECURSE 0x80
639 2167
640/*****************************************************************************/ 2168/*****************************************************************************/
641 2169
642#ifndef EV_HAVE_EV_TIME 2170#ifndef EV_HAVE_EV_TIME
643ev_tstamp 2171ev_tstamp
644ev_time (void) 2172ev_time (void) EV_NOEXCEPT
645{ 2173{
646#if EV_USE_REALTIME 2174#if EV_USE_REALTIME
647 if (expect_true (have_realtime)) 2175 if (ecb_expect_true (have_realtime))
648 { 2176 {
649 struct timespec ts; 2177 struct timespec ts;
650 clock_gettime (CLOCK_REALTIME, &ts); 2178 clock_gettime (CLOCK_REALTIME, &ts);
651 return ts.tv_sec + ts.tv_nsec * 1e-9; 2179 return EV_TS_GET (ts);
652 } 2180 }
653#endif 2181#endif
654 2182
2183 {
655 struct timeval tv; 2184 struct timeval tv;
656 gettimeofday (&tv, 0); 2185 gettimeofday (&tv, 0);
657 return tv.tv_sec + tv.tv_usec * 1e-6; 2186 return EV_TV_GET (tv);
2187 }
658} 2188}
659#endif 2189#endif
660 2190
661inline_size ev_tstamp 2191inline_size ev_tstamp
662get_clock (void) 2192get_clock (void)
663{ 2193{
664#if EV_USE_MONOTONIC 2194#if EV_USE_MONOTONIC
665 if (expect_true (have_monotonic)) 2195 if (ecb_expect_true (have_monotonic))
666 { 2196 {
667 struct timespec ts; 2197 struct timespec ts;
668 clock_gettime (CLOCK_MONOTONIC, &ts); 2198 clock_gettime (CLOCK_MONOTONIC, &ts);
669 return ts.tv_sec + ts.tv_nsec * 1e-9; 2199 return EV_TS_GET (ts);
670 } 2200 }
671#endif 2201#endif
672 2202
673 return ev_time (); 2203 return ev_time ();
674} 2204}
675 2205
676#if EV_MULTIPLICITY 2206#if EV_MULTIPLICITY
677ev_tstamp 2207ev_tstamp
678ev_now (EV_P) 2208ev_now (EV_P) EV_NOEXCEPT
679{ 2209{
680 return ev_rt_now; 2210 return ev_rt_now;
681} 2211}
682#endif 2212#endif
683 2213
684void 2214void
685ev_sleep (ev_tstamp delay) 2215ev_sleep (ev_tstamp delay) EV_NOEXCEPT
686{ 2216{
687 if (delay > 0.) 2217 if (delay > EV_TS_CONST (0.))
688 { 2218 {
689#if EV_USE_NANOSLEEP 2219#if EV_USE_NANOSLEEP
690 struct timespec ts; 2220 struct timespec ts;
691 2221
692 ts.tv_sec = (time_t)delay; 2222 EV_TS_SET (ts, delay);
693 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
694
695 nanosleep (&ts, 0); 2223 nanosleep (&ts, 0);
696#elif defined(_WIN32) 2224#elif defined _WIN32
2225 /* maybe this should round up, as ms is very low resolution */
2226 /* compared to select (µs) or nanosleep (ns) */
697 Sleep ((unsigned long)(delay * 1e3)); 2227 Sleep ((unsigned long)(EV_TS_TO_MSEC (delay)));
698#else 2228#else
699 struct timeval tv; 2229 struct timeval tv;
700
701 tv.tv_sec = (time_t)delay;
702 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
703 2230
704 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 2231 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
705 /* something not guaranteed by newer posix versions, but guaranteed */ 2232 /* something not guaranteed by newer posix versions, but guaranteed */
706 /* by older ones */ 2233 /* by older ones */
2234 EV_TV_SET (tv, delay);
707 select (0, 0, 0, 0, &tv); 2235 select (0, 0, 0, 0, &tv);
708#endif 2236#endif
709 } 2237 }
710} 2238}
711 2239
712/*****************************************************************************/ 2240/*****************************************************************************/
713 2241
714#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 2242#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
715 2243
716/* find a suitable new size for the given array, */ 2244/* find a suitable new size for the given array, */
717/* hopefully by rounding to a ncie-to-malloc size */ 2245/* hopefully by rounding to a nice-to-malloc size */
718inline_size int 2246inline_size int
719array_nextsize (int elem, int cur, int cnt) 2247array_nextsize (int elem, int cur, int cnt)
720{ 2248{
721 int ncur = cur + 1; 2249 int ncur = cur + 1;
722 2250
723 do 2251 do
724 ncur <<= 1; 2252 ncur <<= 1;
725 while (cnt > ncur); 2253 while (cnt > ncur);
726 2254
727 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 2255 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
728 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 2256 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
729 { 2257 {
730 ncur *= elem; 2258 ncur *= elem;
731 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 2259 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
732 ncur = ncur - sizeof (void *) * 4; 2260 ncur = ncur - sizeof (void *) * 4;
… …
734 } 2262 }
735 2263
736 return ncur; 2264 return ncur;
737} 2265}
738 2266
739static noinline void * 2267ecb_noinline ecb_cold
2268static void *
740array_realloc (int elem, void *base, int *cur, int cnt) 2269array_realloc (int elem, void *base, int *cur, int cnt)
741{ 2270{
742 *cur = array_nextsize (elem, *cur, cnt); 2271 *cur = array_nextsize (elem, *cur, cnt);
743 return ev_realloc (base, elem * *cur); 2272 return ev_realloc (base, elem * *cur);
744} 2273}
745 2274
2275#define array_needsize_noinit(base,offset,count)
2276
746#define array_init_zero(base,count) \ 2277#define array_needsize_zerofill(base,offset,count) \
747 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 2278 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
748 2279
749#define array_needsize(type,base,cur,cnt,init) \ 2280#define array_needsize(type,base,cur,cnt,init) \
750 if (expect_false ((cnt) > (cur))) \ 2281 if (ecb_expect_false ((cnt) > (cur))) \
751 { \ 2282 { \
752 int ocur_ = (cur); \ 2283 ecb_unused int ocur_ = (cur); \
753 (base) = (type *)array_realloc \ 2284 (base) = (type *)array_realloc \
754 (sizeof (type), (base), &(cur), (cnt)); \ 2285 (sizeof (type), (base), &(cur), (cnt)); \
755 init ((base) + (ocur_), (cur) - ocur_); \ 2286 init ((base), ocur_, ((cur) - ocur_)); \
756 } 2287 }
757 2288
758#if 0 2289#if 0
759#define array_slim(type,stem) \ 2290#define array_slim(type,stem) \
760 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2291 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
… …
769 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 2300 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
770 2301
771/*****************************************************************************/ 2302/*****************************************************************************/
772 2303
773/* dummy callback for pending events */ 2304/* dummy callback for pending events */
774static void noinline 2305ecb_noinline
2306static void
775pendingcb (EV_P_ ev_prepare *w, int revents) 2307pendingcb (EV_P_ ev_prepare *w, int revents)
776{ 2308{
777} 2309}
778 2310
779void noinline 2311ecb_noinline
2312void
780ev_feed_event (EV_P_ void *w, int revents) 2313ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
781{ 2314{
782 W w_ = (W)w; 2315 W w_ = (W)w;
783 int pri = ABSPRI (w_); 2316 int pri = ABSPRI (w_);
784 2317
785 if (expect_false (w_->pending)) 2318 if (ecb_expect_false (w_->pending))
786 pendings [pri][w_->pending - 1].events |= revents; 2319 pendings [pri][w_->pending - 1].events |= revents;
787 else 2320 else
788 { 2321 {
789 w_->pending = ++pendingcnt [pri]; 2322 w_->pending = ++pendingcnt [pri];
790 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2323 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
791 pendings [pri][w_->pending - 1].w = w_; 2324 pendings [pri][w_->pending - 1].w = w_;
792 pendings [pri][w_->pending - 1].events = revents; 2325 pendings [pri][w_->pending - 1].events = revents;
793 } 2326 }
2327
2328 pendingpri = NUMPRI - 1;
794} 2329}
795 2330
796inline_speed void 2331inline_speed void
797feed_reverse (EV_P_ W w) 2332feed_reverse (EV_P_ W w)
798{ 2333{
799 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2334 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
800 rfeeds [rfeedcnt++] = w; 2335 rfeeds [rfeedcnt++] = w;
801} 2336}
802 2337
803inline_size void 2338inline_size void
804feed_reverse_done (EV_P_ int revents) 2339feed_reverse_done (EV_P_ int revents)
… …
818} 2353}
819 2354
820/*****************************************************************************/ 2355/*****************************************************************************/
821 2356
822inline_speed void 2357inline_speed void
823fd_event_nc (EV_P_ int fd, int revents) 2358fd_event_nocheck (EV_P_ int fd, int revents)
824{ 2359{
825 ANFD *anfd = anfds + fd; 2360 ANFD *anfd = anfds + fd;
826 ev_io *w; 2361 ev_io *w;
827 2362
828 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2363 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
839inline_speed void 2374inline_speed void
840fd_event (EV_P_ int fd, int revents) 2375fd_event (EV_P_ int fd, int revents)
841{ 2376{
842 ANFD *anfd = anfds + fd; 2377 ANFD *anfd = anfds + fd;
843 2378
844 if (expect_true (!anfd->reify)) 2379 if (ecb_expect_true (!anfd->reify))
845 fd_event_nc (EV_A_ fd, revents); 2380 fd_event_nocheck (EV_A_ fd, revents);
846} 2381}
847 2382
848void 2383void
849ev_feed_fd_event (EV_P_ int fd, int revents) 2384ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
850{ 2385{
851 if (fd >= 0 && fd < anfdmax) 2386 if (fd >= 0 && fd < anfdmax)
852 fd_event_nc (EV_A_ fd, revents); 2387 fd_event_nocheck (EV_A_ fd, revents);
853} 2388}
854 2389
855/* make sure the external fd watch events are in-sync */ 2390/* make sure the external fd watch events are in-sync */
856/* with the kernel/libev internal state */ 2391/* with the kernel/libev internal state */
857inline_size void 2392inline_size void
858fd_reify (EV_P) 2393fd_reify (EV_P)
859{ 2394{
860 int i; 2395 int i;
861 2396
2397 /* most backends do not modify the fdchanges list in backend_modfiy.
2398 * except io_uring, which has fixed-size buffers which might force us
2399 * to handle events in backend_modify, causing fdchanges to be amended,
2400 * which could result in an endless loop.
2401 * to avoid this, we do not dynamically handle fds that were added
2402 * during fd_reify. that means that for those backends, fdchangecnt
2403 * might be non-zero during poll, which must cause them to not block.
2404 * to not put too much of a burden on other backends, this detail
2405 * needs to be handled in the backend.
2406 */
2407 int changecnt = fdchangecnt;
2408
2409#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
862 for (i = 0; i < fdchangecnt; ++i) 2410 for (i = 0; i < changecnt; ++i)
2411 {
2412 int fd = fdchanges [i];
2413 ANFD *anfd = anfds + fd;
2414
2415 if (anfd->reify & EV__IOFDSET && anfd->head)
2416 {
2417 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
2418
2419 if (handle != anfd->handle)
2420 {
2421 unsigned long arg;
2422
2423 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
2424
2425 /* handle changed, but fd didn't - we need to do it in two steps */
2426 backend_modify (EV_A_ fd, anfd->events, 0);
2427 anfd->events = 0;
2428 anfd->handle = handle;
2429 }
2430 }
2431 }
2432#endif
2433
2434 for (i = 0; i < changecnt; ++i)
863 { 2435 {
864 int fd = fdchanges [i]; 2436 int fd = fdchanges [i];
865 ANFD *anfd = anfds + fd; 2437 ANFD *anfd = anfds + fd;
866 ev_io *w; 2438 ev_io *w;
867 2439
868 unsigned char events = 0; 2440 unsigned char o_events = anfd->events;
2441 unsigned char o_reify = anfd->reify;
869 2442
870 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2443 anfd->reify = 0;
871 events |= (unsigned char)w->events;
872 2444
873#if EV_SELECT_IS_WINSOCKET 2445 /*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
874 if (events)
875 { 2446 {
876 unsigned long arg; 2447 anfd->events = 0;
877 #ifdef EV_FD_TO_WIN32_HANDLE 2448
878 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 2449 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
879 #else 2450 anfd->events |= (unsigned char)w->events;
880 anfd->handle = _get_osfhandle (fd); 2451
881 #endif 2452 if (o_events != anfd->events)
882 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 2453 o_reify = EV__IOFDSET; /* actually |= */
883 } 2454 }
884#endif
885 2455
886 { 2456 if (o_reify & EV__IOFDSET)
887 unsigned char o_events = anfd->events;
888 unsigned char o_reify = anfd->reify;
889
890 anfd->reify = 0;
891 anfd->events = events;
892
893 if (o_events != events || o_reify & EV__IOFDSET)
894 backend_modify (EV_A_ fd, o_events, events); 2457 backend_modify (EV_A_ fd, o_events, anfd->events);
895 } 2458 }
896 }
897 2459
2460 /* normally, fdchangecnt hasn't changed. if it has, then new fds have been added.
2461 * this is a rare case (see beginning comment in this function), so we copy them to the
2462 * front and hope the backend handles this case.
2463 */
2464 if (ecb_expect_false (fdchangecnt != changecnt))
2465 memmove (fdchanges, fdchanges + changecnt, (fdchangecnt - changecnt) * sizeof (*fdchanges));
2466
898 fdchangecnt = 0; 2467 fdchangecnt -= changecnt;
899} 2468}
900 2469
901/* something about the given fd changed */ 2470/* something about the given fd changed */
902inline_size void 2471inline_size
2472void
903fd_change (EV_P_ int fd, int flags) 2473fd_change (EV_P_ int fd, int flags)
904{ 2474{
905 unsigned char reify = anfds [fd].reify; 2475 unsigned char reify = anfds [fd].reify;
906 anfds [fd].reify |= flags; 2476 anfds [fd].reify = reify | flags;
907 2477
908 if (expect_true (!reify)) 2478 if (ecb_expect_true (!reify))
909 { 2479 {
910 ++fdchangecnt; 2480 ++fdchangecnt;
911 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2481 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
912 fdchanges [fdchangecnt - 1] = fd; 2482 fdchanges [fdchangecnt - 1] = fd;
913 } 2483 }
914} 2484}
915 2485
916/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2486/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
917inline_speed void 2487inline_speed ecb_cold void
918fd_kill (EV_P_ int fd) 2488fd_kill (EV_P_ int fd)
919{ 2489{
920 ev_io *w; 2490 ev_io *w;
921 2491
922 while ((w = (ev_io *)anfds [fd].head)) 2492 while ((w = (ev_io *)anfds [fd].head))
… …
924 ev_io_stop (EV_A_ w); 2494 ev_io_stop (EV_A_ w);
925 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2495 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
926 } 2496 }
927} 2497}
928 2498
929/* check whether the given fd is atcually valid, for error recovery */ 2499/* check whether the given fd is actually valid, for error recovery */
930inline_size int 2500inline_size ecb_cold int
931fd_valid (int fd) 2501fd_valid (int fd)
932{ 2502{
933#ifdef _WIN32 2503#ifdef _WIN32
934 return _get_osfhandle (fd) != -1; 2504 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
935#else 2505#else
936 return fcntl (fd, F_GETFD) != -1; 2506 return fcntl (fd, F_GETFD) != -1;
937#endif 2507#endif
938} 2508}
939 2509
940/* called on EBADF to verify fds */ 2510/* called on EBADF to verify fds */
941static void noinline 2511ecb_noinline ecb_cold
2512static void
942fd_ebadf (EV_P) 2513fd_ebadf (EV_P)
943{ 2514{
944 int fd; 2515 int fd;
945 2516
946 for (fd = 0; fd < anfdmax; ++fd) 2517 for (fd = 0; fd < anfdmax; ++fd)
… …
948 if (!fd_valid (fd) && errno == EBADF) 2519 if (!fd_valid (fd) && errno == EBADF)
949 fd_kill (EV_A_ fd); 2520 fd_kill (EV_A_ fd);
950} 2521}
951 2522
952/* called on ENOMEM in select/poll to kill some fds and retry */ 2523/* called on ENOMEM in select/poll to kill some fds and retry */
953static void noinline 2524ecb_noinline ecb_cold
2525static void
954fd_enomem (EV_P) 2526fd_enomem (EV_P)
955{ 2527{
956 int fd; 2528 int fd;
957 2529
958 for (fd = anfdmax; fd--; ) 2530 for (fd = anfdmax; fd--; )
… …
962 break; 2534 break;
963 } 2535 }
964} 2536}
965 2537
966/* usually called after fork if backend needs to re-arm all fds from scratch */ 2538/* usually called after fork if backend needs to re-arm all fds from scratch */
967static void noinline 2539ecb_noinline
2540static void
968fd_rearm_all (EV_P) 2541fd_rearm_all (EV_P)
969{ 2542{
970 int fd; 2543 int fd;
971 2544
972 for (fd = 0; fd < anfdmax; ++fd) 2545 for (fd = 0; fd < anfdmax; ++fd)
… …
976 anfds [fd].emask = 0; 2549 anfds [fd].emask = 0;
977 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); 2550 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
978 } 2551 }
979} 2552}
980 2553
2554/* used to prepare libev internal fd's */
2555/* this is not fork-safe */
2556inline_speed void
2557fd_intern (int fd)
2558{
2559#ifdef _WIN32
2560 unsigned long arg = 1;
2561 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
2562#else
2563 fcntl (fd, F_SETFD, FD_CLOEXEC);
2564 fcntl (fd, F_SETFL, O_NONBLOCK);
2565#endif
2566}
2567
981/*****************************************************************************/ 2568/*****************************************************************************/
982 2569
983/* 2570/*
984 * the heap functions want a real array index. array index 0 uis guaranteed to not 2571 * the heap functions want a real array index. array index 0 is guaranteed to not
985 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 2572 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
986 * the branching factor of the d-tree. 2573 * the branching factor of the d-tree.
987 */ 2574 */
988 2575
989/* 2576/*
… …
1011 ev_tstamp minat; 2598 ev_tstamp minat;
1012 ANHE *minpos; 2599 ANHE *minpos;
1013 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; 2600 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
1014 2601
1015 /* find minimum child */ 2602 /* find minimum child */
1016 if (expect_true (pos + DHEAP - 1 < E)) 2603 if (ecb_expect_true (pos + DHEAP - 1 < E))
1017 { 2604 {
1018 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2605 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1019 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2606 if ( minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1020 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2607 if ( minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1021 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2608 if ( minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1022 } 2609 }
1023 else if (pos < E) 2610 else if (pos < E)
1024 { 2611 {
1025 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2612 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1026 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2613 if (pos + 1 < E && minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1027 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2614 if (pos + 2 < E && minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1028 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2615 if (pos + 3 < E && minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1029 } 2616 }
1030 else 2617 else
1031 break; 2618 break;
1032 2619
1033 if (ANHE_at (he) <= minat) 2620 if (ANHE_at (he) <= minat)
… …
1041 2628
1042 heap [k] = he; 2629 heap [k] = he;
1043 ev_active (ANHE_w (he)) = k; 2630 ev_active (ANHE_w (he)) = k;
1044} 2631}
1045 2632
1046#else /* 4HEAP */ 2633#else /* not 4HEAP */
1047 2634
1048#define HEAP0 1 2635#define HEAP0 1
1049#define HPARENT(k) ((k) >> 1) 2636#define HPARENT(k) ((k) >> 1)
1050#define UPHEAP_DONE(p,k) (!(p)) 2637#define UPHEAP_DONE(p,k) (!(p))
1051 2638
… …
1057 2644
1058 for (;;) 2645 for (;;)
1059 { 2646 {
1060 int c = k << 1; 2647 int c = k << 1;
1061 2648
1062 if (c > N + HEAP0 - 1) 2649 if (c >= N + HEAP0)
1063 break; 2650 break;
1064 2651
1065 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 2652 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
1066 ? 1 : 0; 2653 ? 1 : 0;
1067 2654
… …
1103 2690
1104/* move an element suitably so it is in a correct place */ 2691/* move an element suitably so it is in a correct place */
1105inline_size void 2692inline_size void
1106adjustheap (ANHE *heap, int N, int k) 2693adjustheap (ANHE *heap, int N, int k)
1107{ 2694{
1108 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 2695 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1109 upheap (heap, k); 2696 upheap (heap, k);
1110 else 2697 else
1111 downheap (heap, N, k); 2698 downheap (heap, N, k);
1112} 2699}
1113 2700
… …
1123 upheap (heap, i + HEAP0); 2710 upheap (heap, i + HEAP0);
1124} 2711}
1125 2712
1126/*****************************************************************************/ 2713/*****************************************************************************/
1127 2714
1128/* associate signal watchers to a signal signal */ 2715/* associate signal watchers to a signal */
1129typedef struct 2716typedef struct
1130{ 2717{
1131 EV_ATOMIC_T pending; 2718 EV_ATOMIC_T pending;
1132#if EV_MULTIPLICITY 2719#if EV_MULTIPLICITY
1133 EV_P; 2720 EV_P;
… …
1137 2724
1138static ANSIG signals [EV_NSIG - 1]; 2725static ANSIG signals [EV_NSIG - 1];
1139 2726
1140/*****************************************************************************/ 2727/*****************************************************************************/
1141 2728
1142/* used to prepare libev internal fd's */ 2729#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1143/* this is not fork-safe */ 2730
2731ecb_noinline ecb_cold
2732static void
2733evpipe_init (EV_P)
2734{
2735 if (!ev_is_active (&pipe_w))
2736 {
2737 int fds [2];
2738
2739# if EV_USE_EVENTFD
2740 fds [0] = -1;
2741 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
2742 if (fds [1] < 0 && errno == EINVAL)
2743 fds [1] = eventfd (0, 0);
2744
2745 if (fds [1] < 0)
2746# endif
2747 {
2748 while (pipe (fds))
2749 ev_syserr ("(libev) error creating signal/async pipe");
2750
2751 fd_intern (fds [0]);
2752 }
2753
2754 evpipe [0] = fds [0];
2755
2756 if (evpipe [1] < 0)
2757 evpipe [1] = fds [1]; /* first call, set write fd */
2758 else
2759 {
2760 /* on subsequent calls, do not change evpipe [1] */
2761 /* so that evpipe_write can always rely on its value. */
2762 /* this branch does not do anything sensible on windows, */
2763 /* so must not be executed on windows */
2764
2765 dup2 (fds [1], evpipe [1]);
2766 close (fds [1]);
2767 }
2768
2769 fd_intern (evpipe [1]);
2770
2771 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2772 ev_io_start (EV_A_ &pipe_w);
2773 ev_unref (EV_A); /* watcher should not keep loop alive */
2774 }
2775}
2776
1144inline_speed void 2777inline_speed void
1145fd_intern (int fd) 2778evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1146{ 2779{
1147#ifdef _WIN32 2780 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1148 unsigned long arg = 1;
1149 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1150#else
1151 fcntl (fd, F_SETFD, FD_CLOEXEC);
1152 fcntl (fd, F_SETFL, O_NONBLOCK);
1153#endif
1154}
1155 2781
1156static void noinline 2782 if (ecb_expect_true (*flag))
1157evpipe_init (EV_P) 2783 return;
1158{ 2784
1159 if (!ev_is_active (&pipe_w)) 2785 *flag = 1;
2786 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2787
2788 pipe_write_skipped = 1;
2789
2790 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2791
2792 if (pipe_write_wanted)
1160 { 2793 {
2794 int old_errno;
2795
2796 pipe_write_skipped = 0;
2797 ECB_MEMORY_FENCE_RELEASE;
2798
2799 old_errno = errno; /* save errno because write will clobber it */
2800
1161#if EV_USE_EVENTFD 2801#if EV_USE_EVENTFD
1162 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2802 if (evpipe [0] < 0)
1163 if (evfd < 0 && errno == EINVAL)
1164 evfd = eventfd (0, 0);
1165
1166 if (evfd >= 0)
1167 { 2803 {
1168 evpipe [0] = -1; 2804 uint64_t counter = 1;
1169 fd_intern (evfd); /* doing it twice doesn't hurt */ 2805 write (evpipe [1], &counter, sizeof (uint64_t));
1170 ev_io_set (&pipe_w, evfd, EV_READ);
1171 } 2806 }
1172 else 2807 else
1173#endif 2808#endif
1174 { 2809 {
1175 while (pipe (evpipe)) 2810#ifdef _WIN32
1176 ev_syserr ("(libev) error creating signal/async pipe"); 2811 WSABUF buf;
1177 2812 DWORD sent;
1178 fd_intern (evpipe [0]); 2813 buf.buf = (char *)&buf;
1179 fd_intern (evpipe [1]); 2814 buf.len = 1;
1180 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2815 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2816#else
2817 write (evpipe [1], &(evpipe [1]), 1);
2818#endif
1181 } 2819 }
1182
1183 ev_io_start (EV_A_ &pipe_w);
1184 ev_unref (EV_A); /* watcher should not keep loop alive */
1185 }
1186}
1187
1188inline_size void
1189evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1190{
1191 if (!*flag)
1192 {
1193 int old_errno = errno; /* save errno because write might clobber it */
1194
1195 *flag = 1;
1196
1197#if EV_USE_EVENTFD
1198 if (evfd >= 0)
1199 {
1200 uint64_t counter = 1;
1201 write (evfd, &counter, sizeof (uint64_t));
1202 }
1203 else
1204#endif
1205 write (evpipe [1], &old_errno, 1);
1206 2820
1207 errno = old_errno; 2821 errno = old_errno;
1208 } 2822 }
1209} 2823}
1210 2824
… …
1213static void 2827static void
1214pipecb (EV_P_ ev_io *iow, int revents) 2828pipecb (EV_P_ ev_io *iow, int revents)
1215{ 2829{
1216 int i; 2830 int i;
1217 2831
2832 if (revents & EV_READ)
2833 {
1218#if EV_USE_EVENTFD 2834#if EV_USE_EVENTFD
1219 if (evfd >= 0) 2835 if (evpipe [0] < 0)
1220 { 2836 {
1221 uint64_t counter; 2837 uint64_t counter;
1222 read (evfd, &counter, sizeof (uint64_t)); 2838 read (evpipe [1], &counter, sizeof (uint64_t));
1223 } 2839 }
1224 else 2840 else
1225#endif 2841#endif
1226 { 2842 {
1227 char dummy; 2843 char dummy[4];
2844#ifdef _WIN32
2845 WSABUF buf;
2846 DWORD recvd;
2847 DWORD flags = 0;
2848 buf.buf = dummy;
2849 buf.len = sizeof (dummy);
2850 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2851#else
1228 read (evpipe [0], &dummy, 1); 2852 read (evpipe [0], &dummy, sizeof (dummy));
2853#endif
2854 }
1229 } 2855 }
1230 2856
2857 pipe_write_skipped = 0;
2858
2859 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2860
2861#if EV_SIGNAL_ENABLE
1231 if (sig_pending) 2862 if (sig_pending)
1232 { 2863 {
1233 sig_pending = 0; 2864 sig_pending = 0;
1234 2865
2866 ECB_MEMORY_FENCE;
2867
1235 for (i = EV_NSIG - 1; i--; ) 2868 for (i = EV_NSIG - 1; i--; )
1236 if (expect_false (signals [i].pending)) 2869 if (ecb_expect_false (signals [i].pending))
1237 ev_feed_signal_event (EV_A_ i + 1); 2870 ev_feed_signal_event (EV_A_ i + 1);
1238 } 2871 }
2872#endif
1239 2873
1240#if EV_ASYNC_ENABLE 2874#if EV_ASYNC_ENABLE
1241 if (async_pending) 2875 if (async_pending)
1242 { 2876 {
1243 async_pending = 0; 2877 async_pending = 0;
2878
2879 ECB_MEMORY_FENCE;
1244 2880
1245 for (i = asynccnt; i--; ) 2881 for (i = asynccnt; i--; )
1246 if (asyncs [i]->sent) 2882 if (asyncs [i]->sent)
1247 { 2883 {
1248 asyncs [i]->sent = 0; 2884 asyncs [i]->sent = 0;
2885 ECB_MEMORY_FENCE_RELEASE;
1249 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2886 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1250 } 2887 }
1251 } 2888 }
1252#endif 2889#endif
1253} 2890}
1254 2891
1255/*****************************************************************************/ 2892/*****************************************************************************/
1256 2893
2894void
2895ev_feed_signal (int signum) EV_NOEXCEPT
2896{
2897#if EV_MULTIPLICITY
2898 EV_P;
2899 ECB_MEMORY_FENCE_ACQUIRE;
2900 EV_A = signals [signum - 1].loop;
2901
2902 if (!EV_A)
2903 return;
2904#endif
2905
2906 signals [signum - 1].pending = 1;
2907 evpipe_write (EV_A_ &sig_pending);
2908}
2909
1257static void 2910static void
1258ev_sighandler (int signum) 2911ev_sighandler (int signum)
1259{ 2912{
1260#if EV_MULTIPLICITY
1261 EV_P = signals [signum - 1].loop;
1262#endif
1263
1264#if _WIN32 2913#ifdef _WIN32
1265 signal (signum, ev_sighandler); 2914 signal (signum, ev_sighandler);
1266#endif 2915#endif
1267 2916
1268 signals [signum - 1].pending = 1; 2917 ev_feed_signal (signum);
1269 evpipe_write (EV_A_ &sig_pending);
1270} 2918}
1271 2919
1272void noinline 2920ecb_noinline
2921void
1273ev_feed_signal_event (EV_P_ int signum) 2922ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
1274{ 2923{
1275 WL w; 2924 WL w;
1276 2925
1277 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2926 if (ecb_expect_false (signum <= 0 || signum >= EV_NSIG))
1278 return; 2927 return;
1279 2928
1280 --signum; 2929 --signum;
1281 2930
1282#if EV_MULTIPLICITY 2931#if EV_MULTIPLICITY
1283 /* it is permissible to try to feed a signal to the wrong loop */ 2932 /* it is permissible to try to feed a signal to the wrong loop */
1284 /* or, likely more useful, feeding a signal nobody is waiting for */ 2933 /* or, likely more useful, feeding a signal nobody is waiting for */
1285 2934
1286 if (expect_false (signals [signum].loop != EV_A)) 2935 if (ecb_expect_false (signals [signum].loop != EV_A))
1287 return; 2936 return;
1288#endif 2937#endif
1289 2938
1290 signals [signum].pending = 0; 2939 signals [signum].pending = 0;
2940 ECB_MEMORY_FENCE_RELEASE;
1291 2941
1292 for (w = signals [signum].head; w; w = w->next) 2942 for (w = signals [signum].head; w; w = w->next)
1293 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2943 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1294} 2944}
1295 2945
… …
1311 break; 2961 break;
1312 } 2962 }
1313} 2963}
1314#endif 2964#endif
1315 2965
2966#endif
2967
1316/*****************************************************************************/ 2968/*****************************************************************************/
1317 2969
2970#if EV_CHILD_ENABLE
1318static WL childs [EV_PID_HASHSIZE]; 2971static WL childs [EV_PID_HASHSIZE];
1319
1320#ifndef _WIN32
1321 2972
1322static ev_signal childev; 2973static ev_signal childev;
1323 2974
1324#ifndef WIFCONTINUED 2975#ifndef WIFCONTINUED
1325# define WIFCONTINUED(status) 0 2976# define WIFCONTINUED(status) 0
… …
1330child_reap (EV_P_ int chain, int pid, int status) 2981child_reap (EV_P_ int chain, int pid, int status)
1331{ 2982{
1332 ev_child *w; 2983 ev_child *w;
1333 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2984 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1334 2985
1335 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2986 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1336 { 2987 {
1337 if ((w->pid == pid || !w->pid) 2988 if ((w->pid == pid || !w->pid)
1338 && (!traced || (w->flags & 1))) 2989 && (!traced || (w->flags & 1)))
1339 { 2990 {
1340 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2991 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1365 /* make sure we are called again until all children have been reaped */ 3016 /* make sure we are called again until all children have been reaped */
1366 /* we need to do it this way so that the callback gets called before we continue */ 3017 /* we need to do it this way so that the callback gets called before we continue */
1367 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 3018 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1368 3019
1369 child_reap (EV_A_ pid, pid, status); 3020 child_reap (EV_A_ pid, pid, status);
1370 if (EV_PID_HASHSIZE > 1) 3021 if ((EV_PID_HASHSIZE) > 1)
1371 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 3022 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1372} 3023}
1373 3024
1374#endif 3025#endif
1375 3026
1376/*****************************************************************************/ 3027/*****************************************************************************/
1377 3028
3029#if EV_USE_TIMERFD
3030
3031static void periodics_reschedule (EV_P);
3032
3033static void
3034timerfdcb (EV_P_ ev_io *iow, int revents)
3035{
3036 struct itimerspec its = { 0 };
3037
3038 its.it_value.tv_sec = ev_rt_now + (int)MAX_BLOCKTIME2;
3039 timerfd_settime (timerfd, TFD_TIMER_ABSTIME | TFD_TIMER_CANCEL_ON_SET, &its, 0);
3040
3041 ev_rt_now = ev_time ();
3042 /* periodics_reschedule only needs ev_rt_now */
3043 /* but maybe in the future we want the full treatment. */
3044 /*
3045 now_floor = EV_TS_CONST (0.);
3046 time_update (EV_A_ EV_TSTAMP_HUGE);
3047 */
3048#if EV_PERIODIC_ENABLE
3049 periodics_reschedule (EV_A);
3050#endif
3051}
3052
3053ecb_noinline ecb_cold
3054static void
3055evtimerfd_init (EV_P)
3056{
3057 if (!ev_is_active (&timerfd_w))
3058 {
3059 timerfd = timerfd_create (CLOCK_REALTIME, TFD_NONBLOCK | TFD_CLOEXEC);
3060
3061 if (timerfd >= 0)
3062 {
3063 fd_intern (timerfd); /* just to be sure */
3064
3065 ev_io_init (&timerfd_w, timerfdcb, timerfd, EV_READ);
3066 ev_set_priority (&timerfd_w, EV_MINPRI);
3067 ev_io_start (EV_A_ &timerfd_w);
3068 ev_unref (EV_A); /* watcher should not keep loop alive */
3069
3070 /* (re-) arm timer */
3071 timerfdcb (EV_A_ 0, 0);
3072 }
3073 }
3074}
3075
3076#endif
3077
3078/*****************************************************************************/
3079
3080#if EV_USE_IOCP
3081# include "ev_iocp.c"
3082#endif
1378#if EV_USE_PORT 3083#if EV_USE_PORT
1379# include "ev_port.c" 3084# include "ev_port.c"
1380#endif 3085#endif
1381#if EV_USE_KQUEUE 3086#if EV_USE_KQUEUE
1382# include "ev_kqueue.c" 3087# include "ev_kqueue.c"
1383#endif 3088#endif
1384#if EV_USE_EPOLL 3089#if EV_USE_EPOLL
1385# include "ev_epoll.c" 3090# include "ev_epoll.c"
1386#endif 3091#endif
3092#if EV_USE_LINUXAIO
3093# include "ev_linuxaio.c"
3094#endif
3095#if EV_USE_IOURING
3096# include "ev_iouring.c"
3097#endif
1387#if EV_USE_POLL 3098#if EV_USE_POLL
1388# include "ev_poll.c" 3099# include "ev_poll.c"
1389#endif 3100#endif
1390#if EV_USE_SELECT 3101#if EV_USE_SELECT
1391# include "ev_select.c" 3102# include "ev_select.c"
1392#endif 3103#endif
1393 3104
1394int 3105ecb_cold int
1395ev_version_major (void) 3106ev_version_major (void) EV_NOEXCEPT
1396{ 3107{
1397 return EV_VERSION_MAJOR; 3108 return EV_VERSION_MAJOR;
1398} 3109}
1399 3110
1400int 3111ecb_cold int
1401ev_version_minor (void) 3112ev_version_minor (void) EV_NOEXCEPT
1402{ 3113{
1403 return EV_VERSION_MINOR; 3114 return EV_VERSION_MINOR;
1404} 3115}
1405 3116
1406/* return true if we are running with elevated privileges and should ignore env variables */ 3117/* return true if we are running with elevated privileges and should ignore env variables */
1407int inline_size 3118inline_size ecb_cold int
1408enable_secure (void) 3119enable_secure (void)
1409{ 3120{
1410#ifdef _WIN32 3121#ifdef _WIN32
1411 return 0; 3122 return 0;
1412#else 3123#else
1413 return getuid () != geteuid () 3124 return getuid () != geteuid ()
1414 || getgid () != getegid (); 3125 || getgid () != getegid ();
1415#endif 3126#endif
1416} 3127}
1417 3128
3129ecb_cold
1418unsigned int 3130unsigned int
1419ev_supported_backends (void) 3131ev_supported_backends (void) EV_NOEXCEPT
1420{ 3132{
1421 unsigned int flags = 0; 3133 unsigned int flags = 0;
1422 3134
1423 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 3135 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1424 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 3136 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
1425 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 3137 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
1426 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 3138 if (EV_USE_LINUXAIO ) flags |= EVBACKEND_LINUXAIO;
1427 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 3139 if (EV_USE_IOURING && ev_linux_version () >= 0x050601) flags |= EVBACKEND_IOURING; /* 5.6.1+ */
1428 3140 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
3141 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
3142
1429 return flags; 3143 return flags;
1430} 3144}
1431 3145
3146ecb_cold
1432unsigned int 3147unsigned int
1433ev_recommended_backends (void) 3148ev_recommended_backends (void) EV_NOEXCEPT
1434{ 3149{
1435 unsigned int flags = ev_supported_backends (); 3150 unsigned int flags = ev_supported_backends ();
1436 3151
1437#ifndef __NetBSD__ 3152#ifndef __NetBSD__
1438 /* kqueue is borked on everything but netbsd apparently */ 3153 /* kqueue is borked on everything but netbsd apparently */
… …
1442#ifdef __APPLE__ 3157#ifdef __APPLE__
1443 /* only select works correctly on that "unix-certified" platform */ 3158 /* only select works correctly on that "unix-certified" platform */
1444 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 3159 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1445 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 3160 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1446#endif 3161#endif
3162#ifdef __FreeBSD__
3163 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
3164#endif
3165
3166 /* TODO: linuxaio is very experimental */
3167#if !EV_RECOMMEND_LINUXAIO
3168 flags &= ~EVBACKEND_LINUXAIO;
3169#endif
3170 /* TODO: linuxaio is super experimental */
3171#if !EV_RECOMMEND_IOURING
3172 flags &= ~EVBACKEND_IOURING;
3173#endif
1447 3174
1448 return flags; 3175 return flags;
1449} 3176}
1450 3177
3178ecb_cold
1451unsigned int 3179unsigned int
1452ev_embeddable_backends (void) 3180ev_embeddable_backends (void) EV_NOEXCEPT
1453{ 3181{
1454 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 3182 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT | EVBACKEND_IOURING;
1455 3183
1456 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 3184 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1457 /* please fix it and tell me how to detect the fix */ 3185 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1458 flags &= ~EVBACKEND_EPOLL; 3186 flags &= ~EVBACKEND_EPOLL;
3187
3188 /* EVBACKEND_LINUXAIO is theoretically embeddable, but suffers from a performance overhead */
1459 3189
1460 return flags; 3190 return flags;
1461} 3191}
1462 3192
1463unsigned int 3193unsigned int
1464ev_backend (EV_P) 3194ev_backend (EV_P) EV_NOEXCEPT
1465{ 3195{
1466 return backend; 3196 return backend;
1467} 3197}
1468 3198
1469#if EV_MINIMAL < 2 3199#if EV_FEATURE_API
1470unsigned int 3200unsigned int
1471ev_loop_count (EV_P) 3201ev_iteration (EV_P) EV_NOEXCEPT
1472{ 3202{
1473 return loop_count; 3203 return loop_count;
1474} 3204}
1475 3205
1476unsigned int 3206unsigned int
1477ev_loop_depth (EV_P) 3207ev_depth (EV_P) EV_NOEXCEPT
1478{ 3208{
1479 return loop_depth; 3209 return loop_depth;
1480} 3210}
1481 3211
1482void 3212void
1483ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 3213ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1484{ 3214{
1485 io_blocktime = interval; 3215 io_blocktime = interval;
1486} 3216}
1487 3217
1488void 3218void
1489ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 3219ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1490{ 3220{
1491 timeout_blocktime = interval; 3221 timeout_blocktime = interval;
1492} 3222}
1493 3223
1494void 3224void
1495ev_set_userdata (EV_P_ void *data) 3225ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
1496{ 3226{
1497 userdata = data; 3227 userdata = data;
1498} 3228}
1499 3229
1500void * 3230void *
1501ev_userdata (EV_P) 3231ev_userdata (EV_P) EV_NOEXCEPT
1502{ 3232{
1503 return userdata; 3233 return userdata;
1504} 3234}
1505 3235
3236void
1506void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 3237ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
1507{ 3238{
1508 invoke_cb = invoke_pending_cb; 3239 invoke_cb = invoke_pending_cb;
1509} 3240}
1510 3241
3242void
1511void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 3243ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
1512{ 3244{
1513 release_cb = release; 3245 release_cb = release;
1514 acquire_cb = acquire; 3246 acquire_cb = acquire;
1515} 3247}
1516#endif 3248#endif
1517 3249
1518/* initialise a loop structure, must be zero-initialised */ 3250/* initialise a loop structure, must be zero-initialised */
1519static void noinline 3251ecb_noinline ecb_cold
3252static void
1520loop_init (EV_P_ unsigned int flags) 3253loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
1521{ 3254{
1522 if (!backend) 3255 if (!backend)
1523 { 3256 {
3257 origflags = flags;
3258
1524#if EV_USE_REALTIME 3259#if EV_USE_REALTIME
1525 if (!have_realtime) 3260 if (!have_realtime)
1526 { 3261 {
1527 struct timespec ts; 3262 struct timespec ts;
1528 3263
… …
1550 if (!(flags & EVFLAG_NOENV) 3285 if (!(flags & EVFLAG_NOENV)
1551 && !enable_secure () 3286 && !enable_secure ()
1552 && getenv ("LIBEV_FLAGS")) 3287 && getenv ("LIBEV_FLAGS"))
1553 flags = atoi (getenv ("LIBEV_FLAGS")); 3288 flags = atoi (getenv ("LIBEV_FLAGS"));
1554 3289
1555 ev_rt_now = ev_time (); 3290 ev_rt_now = ev_time ();
1556 mn_now = get_clock (); 3291 mn_now = get_clock ();
1557 now_floor = mn_now; 3292 now_floor = mn_now;
1558 rtmn_diff = ev_rt_now - mn_now; 3293 rtmn_diff = ev_rt_now - mn_now;
1559#if EV_MINIMAL < 2 3294#if EV_FEATURE_API
1560 invoke_cb = ev_invoke_pending; 3295 invoke_cb = ev_invoke_pending;
1561#endif 3296#endif
1562 3297
1563 io_blocktime = 0.; 3298 io_blocktime = 0.;
1564 timeout_blocktime = 0.; 3299 timeout_blocktime = 0.;
1565 backend = 0; 3300 backend = 0;
1566 backend_fd = -1; 3301 backend_fd = -1;
1567 sig_pending = 0; 3302 sig_pending = 0;
1568#if EV_ASYNC_ENABLE 3303#if EV_ASYNC_ENABLE
1569 async_pending = 0; 3304 async_pending = 0;
1570#endif 3305#endif
3306 pipe_write_skipped = 0;
3307 pipe_write_wanted = 0;
3308 evpipe [0] = -1;
3309 evpipe [1] = -1;
1571#if EV_USE_INOTIFY 3310#if EV_USE_INOTIFY
1572 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 3311 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1573#endif 3312#endif
1574#if EV_USE_SIGNALFD 3313#if EV_USE_SIGNALFD
3314 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
3315#endif
3316#if EV_USE_TIMERFD
1575 sigfd = flags & EVFLAG_NOSIGFD ? -1 : -2; 3317 timerfd = flags & EVFLAG_NOTIMERFD ? -1 : -2;
1576#endif 3318#endif
1577 3319
1578 if (!(flags & 0x0000ffffU)) 3320 if (!(flags & EVBACKEND_MASK))
1579 flags |= ev_recommended_backends (); 3321 flags |= ev_recommended_backends ();
1580 3322
3323#if EV_USE_IOCP
3324 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
3325#endif
1581#if EV_USE_PORT 3326#if EV_USE_PORT
1582 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 3327 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1583#endif 3328#endif
1584#if EV_USE_KQUEUE 3329#if EV_USE_KQUEUE
1585 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 3330 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
3331#endif
3332#if EV_USE_IOURING
3333 if (!backend && (flags & EVBACKEND_IOURING )) backend = iouring_init (EV_A_ flags);
3334#endif
3335#if EV_USE_LINUXAIO
3336 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
1586#endif 3337#endif
1587#if EV_USE_EPOLL 3338#if EV_USE_EPOLL
1588 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 3339 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
1589#endif 3340#endif
1590#if EV_USE_POLL 3341#if EV_USE_POLL
1591 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 3342 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
1592#endif 3343#endif
1593#if EV_USE_SELECT 3344#if EV_USE_SELECT
1594 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 3345 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
1595#endif 3346#endif
1596 3347
1597 ev_prepare_init (&pending_w, pendingcb); 3348 ev_prepare_init (&pending_w, pendingcb);
1598 3349
3350#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1599 ev_init (&pipe_w, pipecb); 3351 ev_init (&pipe_w, pipecb);
1600 ev_set_priority (&pipe_w, EV_MAXPRI); 3352 ev_set_priority (&pipe_w, EV_MAXPRI);
3353#endif
1601 } 3354 }
1602} 3355}
1603 3356
1604/* free up a loop structure */ 3357/* free up a loop structure */
1605static void noinline 3358ecb_cold
3359void
1606loop_destroy (EV_P) 3360ev_loop_destroy (EV_P)
1607{ 3361{
1608 int i; 3362 int i;
3363
3364#if EV_MULTIPLICITY
3365 /* mimic free (0) */
3366 if (!EV_A)
3367 return;
3368#endif
3369
3370#if EV_CLEANUP_ENABLE
3371 /* queue cleanup watchers (and execute them) */
3372 if (ecb_expect_false (cleanupcnt))
3373 {
3374 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
3375 EV_INVOKE_PENDING;
3376 }
3377#endif
3378
3379#if EV_CHILD_ENABLE
3380 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
3381 {
3382 ev_ref (EV_A); /* child watcher */
3383 ev_signal_stop (EV_A_ &childev);
3384 }
3385#endif
1609 3386
1610 if (ev_is_active (&pipe_w)) 3387 if (ev_is_active (&pipe_w))
1611 { 3388 {
1612 /*ev_ref (EV_A);*/ 3389 /*ev_ref (EV_A);*/
1613 /*ev_io_stop (EV_A_ &pipe_w);*/ 3390 /*ev_io_stop (EV_A_ &pipe_w);*/
1614 3391
1615#if EV_USE_EVENTFD 3392 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1616 if (evfd >= 0) 3393 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1617 close (evfd);
1618#endif
1619
1620 if (evpipe [0] >= 0)
1621 {
1622 close (evpipe [0]);
1623 close (evpipe [1]);
1624 }
1625 } 3394 }
1626 3395
1627#if EV_USE_SIGNALFD 3396#if EV_USE_SIGNALFD
1628 if (ev_is_active (&sigfd_w)) 3397 if (ev_is_active (&sigfd_w))
1629 {
1630 /*ev_ref (EV_A);*/
1631 /*ev_io_stop (EV_A_ &sigfd_w);*/
1632
1633 close (sigfd); 3398 close (sigfd);
1634 } 3399#endif
3400
3401#if EV_USE_TIMERFD
3402 if (ev_is_active (&timerfd_w))
3403 close (timerfd);
1635#endif 3404#endif
1636 3405
1637#if EV_USE_INOTIFY 3406#if EV_USE_INOTIFY
1638 if (fs_fd >= 0) 3407 if (fs_fd >= 0)
1639 close (fs_fd); 3408 close (fs_fd);
1640#endif 3409#endif
1641 3410
1642 if (backend_fd >= 0) 3411 if (backend_fd >= 0)
1643 close (backend_fd); 3412 close (backend_fd);
1644 3413
3414#if EV_USE_IOCP
3415 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
3416#endif
1645#if EV_USE_PORT 3417#if EV_USE_PORT
1646 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3418 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1647#endif 3419#endif
1648#if EV_USE_KQUEUE 3420#if EV_USE_KQUEUE
1649 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3421 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
3422#endif
3423#if EV_USE_IOURING
3424 if (backend == EVBACKEND_IOURING ) iouring_destroy (EV_A);
3425#endif
3426#if EV_USE_LINUXAIO
3427 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
1650#endif 3428#endif
1651#if EV_USE_EPOLL 3429#if EV_USE_EPOLL
1652 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3430 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
1653#endif 3431#endif
1654#if EV_USE_POLL 3432#if EV_USE_POLL
1655 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3433 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
1656#endif 3434#endif
1657#if EV_USE_SELECT 3435#if EV_USE_SELECT
1658 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3436 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
1659#endif 3437#endif
1660 3438
1661 for (i = NUMPRI; i--; ) 3439 for (i = NUMPRI; i--; )
1662 { 3440 {
1663 array_free (pending, [i]); 3441 array_free (pending, [i]);
… …
1676 array_free (periodic, EMPTY); 3454 array_free (periodic, EMPTY);
1677#endif 3455#endif
1678#if EV_FORK_ENABLE 3456#if EV_FORK_ENABLE
1679 array_free (fork, EMPTY); 3457 array_free (fork, EMPTY);
1680#endif 3458#endif
3459#if EV_CLEANUP_ENABLE
3460 array_free (cleanup, EMPTY);
3461#endif
1681 array_free (prepare, EMPTY); 3462 array_free (prepare, EMPTY);
1682 array_free (check, EMPTY); 3463 array_free (check, EMPTY);
1683#if EV_ASYNC_ENABLE 3464#if EV_ASYNC_ENABLE
1684 array_free (async, EMPTY); 3465 array_free (async, EMPTY);
1685#endif 3466#endif
1686 3467
1687 backend = 0; 3468 backend = 0;
3469
3470#if EV_MULTIPLICITY
3471 if (ev_is_default_loop (EV_A))
3472#endif
3473 ev_default_loop_ptr = 0;
3474#if EV_MULTIPLICITY
3475 else
3476 ev_free (EV_A);
3477#endif
1688} 3478}
1689 3479
1690#if EV_USE_INOTIFY 3480#if EV_USE_INOTIFY
1691inline_size void infy_fork (EV_P); 3481inline_size void infy_fork (EV_P);
1692#endif 3482#endif
1693 3483
1694inline_size void 3484inline_size void
1695loop_fork (EV_P) 3485loop_fork (EV_P)
1696{ 3486{
1697#if EV_USE_PORT 3487#if EV_USE_PORT
1698 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3488 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1699#endif 3489#endif
1700#if EV_USE_KQUEUE 3490#if EV_USE_KQUEUE
1701 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 3491 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
3492#endif
3493#if EV_USE_IOURING
3494 if (backend == EVBACKEND_IOURING ) iouring_fork (EV_A);
3495#endif
3496#if EV_USE_LINUXAIO
3497 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
1702#endif 3498#endif
1703#if EV_USE_EPOLL 3499#if EV_USE_EPOLL
1704 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3500 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
1705#endif 3501#endif
1706#if EV_USE_INOTIFY 3502#if EV_USE_INOTIFY
1707 infy_fork (EV_A); 3503 infy_fork (EV_A);
1708#endif 3504#endif
1709 3505
3506 if (postfork != 2)
3507 {
3508 #if EV_USE_SIGNALFD
3509 /* surprisingly, nothing needs to be done for signalfd, accoridng to docs, it does the right thing on fork */
3510 #endif
3511
3512 #if EV_USE_TIMERFD
3513 if (ev_is_active (&timerfd_w))
3514 {
3515 ev_ref (EV_A);
3516 ev_io_stop (EV_A_ &timerfd_w);
3517
3518 close (timerfd);
3519 timerfd = -2;
3520
3521 evtimerfd_init (EV_A);
3522 /* reschedule periodics, in case we missed something */
3523 ev_feed_event (EV_A_ &timerfd_w, EV_CUSTOM);
3524 }
3525 #endif
3526
3527 #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1710 if (ev_is_active (&pipe_w)) 3528 if (ev_is_active (&pipe_w))
1711 { 3529 {
1712 /* this "locks" the handlers against writing to the pipe */ 3530 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1713 /* while we modify the fd vars */ 3531
1714 sig_pending = 1;
1715#if EV_ASYNC_ENABLE
1716 async_pending = 1;
1717#endif
1718
1719 ev_ref (EV_A); 3532 ev_ref (EV_A);
1720 ev_io_stop (EV_A_ &pipe_w); 3533 ev_io_stop (EV_A_ &pipe_w);
1721 3534
1722#if EV_USE_EVENTFD
1723 if (evfd >= 0)
1724 close (evfd);
1725#endif
1726
1727 if (evpipe [0] >= 0) 3535 if (evpipe [0] >= 0)
3536 EV_WIN32_CLOSE_FD (evpipe [0]);
1728 { 3537
1729 close (evpipe [0]); 3538 evpipe_init (EV_A);
1730 close (evpipe [1]); 3539 /* iterate over everything, in case we missed something before */
3540 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1731 } 3541 }
1732 3542 #endif
1733 evpipe_init (EV_A);
1734 /* now iterate over everything, in case we missed something */
1735 pipecb (EV_A_ &pipe_w, EV_READ);
1736 } 3543 }
1737 3544
1738 postfork = 0; 3545 postfork = 0;
1739} 3546}
1740 3547
1741#if EV_MULTIPLICITY 3548#if EV_MULTIPLICITY
1742 3549
3550ecb_cold
1743struct ev_loop * 3551struct ev_loop *
1744ev_loop_new (unsigned int flags) 3552ev_loop_new (unsigned int flags) EV_NOEXCEPT
1745{ 3553{
1746 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3554 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1747 3555
1748 memset (EV_A, 0, sizeof (struct ev_loop)); 3556 memset (EV_A, 0, sizeof (struct ev_loop));
1749 loop_init (EV_A_ flags); 3557 loop_init (EV_A_ flags);
1750 3558
1751 if (ev_backend (EV_A)) 3559 if (ev_backend (EV_A))
1752 return EV_A; 3560 return EV_A;
1753 3561
3562 ev_free (EV_A);
1754 return 0; 3563 return 0;
1755} 3564}
1756 3565
1757void
1758ev_loop_destroy (EV_P)
1759{
1760 loop_destroy (EV_A);
1761 ev_free (loop);
1762}
1763
1764void
1765ev_loop_fork (EV_P)
1766{
1767 postfork = 1; /* must be in line with ev_default_fork */
1768}
1769#endif /* multiplicity */ 3566#endif /* multiplicity */
1770 3567
1771#if EV_VERIFY 3568#if EV_VERIFY
1772static void noinline 3569ecb_noinline ecb_cold
3570static void
1773verify_watcher (EV_P_ W w) 3571verify_watcher (EV_P_ W w)
1774{ 3572{
1775 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3573 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1776 3574
1777 if (w->pending) 3575 if (w->pending)
1778 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3576 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1779} 3577}
1780 3578
1781static void noinline 3579ecb_noinline ecb_cold
3580static void
1782verify_heap (EV_P_ ANHE *heap, int N) 3581verify_heap (EV_P_ ANHE *heap, int N)
1783{ 3582{
1784 int i; 3583 int i;
1785 3584
1786 for (i = HEAP0; i < N + HEAP0; ++i) 3585 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1791 3590
1792 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3591 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1793 } 3592 }
1794} 3593}
1795 3594
1796static void noinline 3595ecb_noinline ecb_cold
3596static void
1797array_verify (EV_P_ W *ws, int cnt) 3597array_verify (EV_P_ W *ws, int cnt)
1798{ 3598{
1799 while (cnt--) 3599 while (cnt--)
1800 { 3600 {
1801 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3601 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1802 verify_watcher (EV_A_ ws [cnt]); 3602 verify_watcher (EV_A_ ws [cnt]);
1803 } 3603 }
1804} 3604}
1805#endif 3605#endif
1806 3606
1807#if EV_MINIMAL < 2 3607#if EV_FEATURE_API
1808void 3608void ecb_cold
1809ev_loop_verify (EV_P) 3609ev_verify (EV_P) EV_NOEXCEPT
1810{ 3610{
1811#if EV_VERIFY 3611#if EV_VERIFY
1812 int i; 3612 int i;
1813 WL w; 3613 WL w, w2;
1814 3614
1815 assert (activecnt >= -1); 3615 assert (activecnt >= -1);
1816 3616
1817 assert (fdchangemax >= fdchangecnt); 3617 assert (fdchangemax >= fdchangecnt);
1818 for (i = 0; i < fdchangecnt; ++i) 3618 for (i = 0; i < fdchangecnt; ++i)
1819 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3619 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1820 3620
1821 assert (anfdmax >= 0); 3621 assert (anfdmax >= 0);
1822 for (i = 0; i < anfdmax; ++i) 3622 for (i = 0; i < anfdmax; ++i)
3623 {
3624 int j = 0;
3625
1823 for (w = anfds [i].head; w; w = w->next) 3626 for (w = w2 = anfds [i].head; w; w = w->next)
1824 { 3627 {
1825 verify_watcher (EV_A_ (W)w); 3628 verify_watcher (EV_A_ (W)w);
3629
3630 if (j++ & 1)
3631 {
3632 assert (("libev: io watcher list contains a loop", w != w2));
3633 w2 = w2->next;
3634 }
3635
1826 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3636 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1827 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 3637 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1828 } 3638 }
3639 }
1829 3640
1830 assert (timermax >= timercnt); 3641 assert (timermax >= timercnt);
1831 verify_heap (EV_A_ timers, timercnt); 3642 verify_heap (EV_A_ timers, timercnt);
1832 3643
1833#if EV_PERIODIC_ENABLE 3644#if EV_PERIODIC_ENABLE
… …
1848#if EV_FORK_ENABLE 3659#if EV_FORK_ENABLE
1849 assert (forkmax >= forkcnt); 3660 assert (forkmax >= forkcnt);
1850 array_verify (EV_A_ (W *)forks, forkcnt); 3661 array_verify (EV_A_ (W *)forks, forkcnt);
1851#endif 3662#endif
1852 3663
3664#if EV_CLEANUP_ENABLE
3665 assert (cleanupmax >= cleanupcnt);
3666 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
3667#endif
3668
1853#if EV_ASYNC_ENABLE 3669#if EV_ASYNC_ENABLE
1854 assert (asyncmax >= asynccnt); 3670 assert (asyncmax >= asynccnt);
1855 array_verify (EV_A_ (W *)asyncs, asynccnt); 3671 array_verify (EV_A_ (W *)asyncs, asynccnt);
1856#endif 3672#endif
1857 3673
3674#if EV_PREPARE_ENABLE
1858 assert (preparemax >= preparecnt); 3675 assert (preparemax >= preparecnt);
1859 array_verify (EV_A_ (W *)prepares, preparecnt); 3676 array_verify (EV_A_ (W *)prepares, preparecnt);
3677#endif
1860 3678
3679#if EV_CHECK_ENABLE
1861 assert (checkmax >= checkcnt); 3680 assert (checkmax >= checkcnt);
1862 array_verify (EV_A_ (W *)checks, checkcnt); 3681 array_verify (EV_A_ (W *)checks, checkcnt);
3682#endif
1863 3683
1864# if 0 3684# if 0
3685#if EV_CHILD_ENABLE
1865 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 3686 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1866 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending) 3687 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
3688#endif
1867# endif 3689# endif
1868#endif 3690#endif
1869} 3691}
1870#endif 3692#endif
1871 3693
1872#if EV_MULTIPLICITY 3694#if EV_MULTIPLICITY
3695ecb_cold
1873struct ev_loop * 3696struct ev_loop *
1874ev_default_loop_init (unsigned int flags)
1875#else 3697#else
1876int 3698int
3699#endif
1877ev_default_loop (unsigned int flags) 3700ev_default_loop (unsigned int flags) EV_NOEXCEPT
1878#endif
1879{ 3701{
1880 if (!ev_default_loop_ptr) 3702 if (!ev_default_loop_ptr)
1881 { 3703 {
1882#if EV_MULTIPLICITY 3704#if EV_MULTIPLICITY
1883 EV_P = ev_default_loop_ptr = &default_loop_struct; 3705 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1887 3709
1888 loop_init (EV_A_ flags); 3710 loop_init (EV_A_ flags);
1889 3711
1890 if (ev_backend (EV_A)) 3712 if (ev_backend (EV_A))
1891 { 3713 {
1892#ifndef _WIN32 3714#if EV_CHILD_ENABLE
1893 ev_signal_init (&childev, childcb, SIGCHLD); 3715 ev_signal_init (&childev, childcb, SIGCHLD);
1894 ev_set_priority (&childev, EV_MAXPRI); 3716 ev_set_priority (&childev, EV_MAXPRI);
1895 ev_signal_start (EV_A_ &childev); 3717 ev_signal_start (EV_A_ &childev);
1896 ev_unref (EV_A); /* child watcher should not keep loop alive */ 3718 ev_unref (EV_A); /* child watcher should not keep loop alive */
1897#endif 3719#endif
… …
1902 3724
1903 return ev_default_loop_ptr; 3725 return ev_default_loop_ptr;
1904} 3726}
1905 3727
1906void 3728void
1907ev_default_destroy (void) 3729ev_loop_fork (EV_P) EV_NOEXCEPT
1908{ 3730{
1909#if EV_MULTIPLICITY 3731 postfork = 1;
1910 EV_P = ev_default_loop_ptr;
1911#endif
1912
1913 ev_default_loop_ptr = 0;
1914
1915#ifndef _WIN32
1916 ev_ref (EV_A); /* child watcher */
1917 ev_signal_stop (EV_A_ &childev);
1918#endif
1919
1920 loop_destroy (EV_A);
1921}
1922
1923void
1924ev_default_fork (void)
1925{
1926#if EV_MULTIPLICITY
1927 EV_P = ev_default_loop_ptr;
1928#endif
1929
1930 postfork = 1; /* must be in line with ev_loop_fork */
1931} 3732}
1932 3733
1933/*****************************************************************************/ 3734/*****************************************************************************/
1934 3735
1935void 3736void
… …
1937{ 3738{
1938 EV_CB_INVOKE ((W)w, revents); 3739 EV_CB_INVOKE ((W)w, revents);
1939} 3740}
1940 3741
1941unsigned int 3742unsigned int
1942ev_pending_count (EV_P) 3743ev_pending_count (EV_P) EV_NOEXCEPT
1943{ 3744{
1944 int pri; 3745 int pri;
1945 unsigned int count = 0; 3746 unsigned int count = 0;
1946 3747
1947 for (pri = NUMPRI; pri--; ) 3748 for (pri = NUMPRI; pri--; )
1948 count += pendingcnt [pri]; 3749 count += pendingcnt [pri];
1949 3750
1950 return count; 3751 return count;
1951} 3752}
1952 3753
1953void noinline 3754ecb_noinline
3755void
1954ev_invoke_pending (EV_P) 3756ev_invoke_pending (EV_P)
1955{ 3757{
1956 int pri; 3758 pendingpri = NUMPRI;
1957 3759
1958 for (pri = NUMPRI; pri--; ) 3760 do
3761 {
3762 --pendingpri;
3763
3764 /* pendingpri possibly gets modified in the inner loop */
1959 while (pendingcnt [pri]) 3765 while (pendingcnt [pendingpri])
1960 { 3766 {
1961 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3767 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
1962 3768
1963 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1964 /* ^ this is no longer true, as pending_w could be here */
1965
1966 p->w->pending = 0; 3769 p->w->pending = 0;
1967 EV_CB_INVOKE (p->w, p->events); 3770 EV_CB_INVOKE (p->w, p->events);
1968 EV_FREQUENT_CHECK; 3771 EV_FREQUENT_CHECK;
1969 } 3772 }
3773 }
3774 while (pendingpri);
1970} 3775}
1971 3776
1972#if EV_IDLE_ENABLE 3777#if EV_IDLE_ENABLE
1973/* make idle watchers pending. this handles the "call-idle */ 3778/* make idle watchers pending. this handles the "call-idle */
1974/* only when higher priorities are idle" logic */ 3779/* only when higher priorities are idle" logic */
1975inline_size void 3780inline_size void
1976idle_reify (EV_P) 3781idle_reify (EV_P)
1977{ 3782{
1978 if (expect_false (idleall)) 3783 if (ecb_expect_false (idleall))
1979 { 3784 {
1980 int pri; 3785 int pri;
1981 3786
1982 for (pri = NUMPRI; pri--; ) 3787 for (pri = NUMPRI; pri--; )
1983 { 3788 {
… …
2013 { 3818 {
2014 ev_at (w) += w->repeat; 3819 ev_at (w) += w->repeat;
2015 if (ev_at (w) < mn_now) 3820 if (ev_at (w) < mn_now)
2016 ev_at (w) = mn_now; 3821 ev_at (w) = mn_now;
2017 3822
2018 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 3823 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > EV_TS_CONST (0.)));
2019 3824
2020 ANHE_at_cache (timers [HEAP0]); 3825 ANHE_at_cache (timers [HEAP0]);
2021 downheap (timers, timercnt, HEAP0); 3826 downheap (timers, timercnt, HEAP0);
2022 } 3827 }
2023 else 3828 else
… …
2026 EV_FREQUENT_CHECK; 3831 EV_FREQUENT_CHECK;
2027 feed_reverse (EV_A_ (W)w); 3832 feed_reverse (EV_A_ (W)w);
2028 } 3833 }
2029 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 3834 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
2030 3835
2031 feed_reverse_done (EV_A_ EV_TIMEOUT); 3836 feed_reverse_done (EV_A_ EV_TIMER);
2032 } 3837 }
2033} 3838}
2034 3839
2035#if EV_PERIODIC_ENABLE 3840#if EV_PERIODIC_ENABLE
3841
3842ecb_noinline
3843static void
3844periodic_recalc (EV_P_ ev_periodic *w)
3845{
3846 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3847 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3848
3849 /* the above almost always errs on the low side */
3850 while (at <= ev_rt_now)
3851 {
3852 ev_tstamp nat = at + w->interval;
3853
3854 /* when resolution fails us, we use ev_rt_now */
3855 if (ecb_expect_false (nat == at))
3856 {
3857 at = ev_rt_now;
3858 break;
3859 }
3860
3861 at = nat;
3862 }
3863
3864 ev_at (w) = at;
3865}
3866
2036/* make periodics pending */ 3867/* make periodics pending */
2037inline_size void 3868inline_size void
2038periodics_reify (EV_P) 3869periodics_reify (EV_P)
2039{ 3870{
2040 EV_FREQUENT_CHECK; 3871 EV_FREQUENT_CHECK;
2041 3872
2042 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3873 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2043 { 3874 {
2044 int feed_count = 0;
2045
2046 do 3875 do
2047 { 3876 {
2048 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3877 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2049 3878
2050 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3879 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2059 ANHE_at_cache (periodics [HEAP0]); 3888 ANHE_at_cache (periodics [HEAP0]);
2060 downheap (periodics, periodiccnt, HEAP0); 3889 downheap (periodics, periodiccnt, HEAP0);
2061 } 3890 }
2062 else if (w->interval) 3891 else if (w->interval)
2063 { 3892 {
2064 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3893 periodic_recalc (EV_A_ w);
2065 /* if next trigger time is not sufficiently in the future, put it there */
2066 /* this might happen because of floating point inexactness */
2067 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2068 {
2069 ev_at (w) += w->interval;
2070
2071 /* if interval is unreasonably low we might still have a time in the past */
2072 /* so correct this. this will make the periodic very inexact, but the user */
2073 /* has effectively asked to get triggered more often than possible */
2074 if (ev_at (w) < ev_rt_now)
2075 ev_at (w) = ev_rt_now;
2076 }
2077
2078 ANHE_at_cache (periodics [HEAP0]); 3894 ANHE_at_cache (periodics [HEAP0]);
2079 downheap (periodics, periodiccnt, HEAP0); 3895 downheap (periodics, periodiccnt, HEAP0);
2080 } 3896 }
2081 else 3897 else
2082 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3898 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2089 feed_reverse_done (EV_A_ EV_PERIODIC); 3905 feed_reverse_done (EV_A_ EV_PERIODIC);
2090 } 3906 }
2091} 3907}
2092 3908
2093/* simply recalculate all periodics */ 3909/* simply recalculate all periodics */
2094/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 3910/* TODO: maybe ensure that at least one event happens when jumping forward? */
2095static void noinline 3911ecb_noinline ecb_cold
3912static void
2096periodics_reschedule (EV_P) 3913periodics_reschedule (EV_P)
2097{ 3914{
2098 int i; 3915 int i;
2099 3916
2100 /* adjust periodics after time jump */ 3917 /* adjust periodics after time jump */
… …
2103 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3920 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2104 3921
2105 if (w->reschedule_cb) 3922 if (w->reschedule_cb)
2106 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3923 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2107 else if (w->interval) 3924 else if (w->interval)
2108 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3925 periodic_recalc (EV_A_ w);
2109 3926
2110 ANHE_at_cache (periodics [i]); 3927 ANHE_at_cache (periodics [i]);
2111 } 3928 }
2112 3929
2113 reheap (periodics, periodiccnt); 3930 reheap (periodics, periodiccnt);
2114} 3931}
2115#endif 3932#endif
2116 3933
2117/* adjust all timers by a given offset */ 3934/* adjust all timers by a given offset */
2118static void noinline 3935ecb_noinline ecb_cold
3936static void
2119timers_reschedule (EV_P_ ev_tstamp adjust) 3937timers_reschedule (EV_P_ ev_tstamp adjust)
2120{ 3938{
2121 int i; 3939 int i;
2122 3940
2123 for (i = 0; i < timercnt; ++i) 3941 for (i = 0; i < timercnt; ++i)
… …
2127 ANHE_at_cache (*he); 3945 ANHE_at_cache (*he);
2128 } 3946 }
2129} 3947}
2130 3948
2131/* fetch new monotonic and realtime times from the kernel */ 3949/* fetch new monotonic and realtime times from the kernel */
2132/* also detetc if there was a timejump, and act accordingly */ 3950/* also detect if there was a timejump, and act accordingly */
2133inline_speed void 3951inline_speed void
2134time_update (EV_P_ ev_tstamp max_block) 3952time_update (EV_P_ ev_tstamp max_block)
2135{ 3953{
2136#if EV_USE_MONOTONIC 3954#if EV_USE_MONOTONIC
2137 if (expect_true (have_monotonic)) 3955 if (ecb_expect_true (have_monotonic))
2138 { 3956 {
2139 int i; 3957 int i;
2140 ev_tstamp odiff = rtmn_diff; 3958 ev_tstamp odiff = rtmn_diff;
2141 3959
2142 mn_now = get_clock (); 3960 mn_now = get_clock ();
2143 3961
2144 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3962 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
2145 /* interpolate in the meantime */ 3963 /* interpolate in the meantime */
2146 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 3964 if (ecb_expect_true (mn_now - now_floor < EV_TS_CONST (MIN_TIMEJUMP * .5)))
2147 { 3965 {
2148 ev_rt_now = rtmn_diff + mn_now; 3966 ev_rt_now = rtmn_diff + mn_now;
2149 return; 3967 return;
2150 } 3968 }
2151 3969
… …
2160 * doesn't hurt either as we only do this on time-jumps or 3978 * doesn't hurt either as we only do this on time-jumps or
2161 * in the unlikely event of having been preempted here. 3979 * in the unlikely event of having been preempted here.
2162 */ 3980 */
2163 for (i = 4; --i; ) 3981 for (i = 4; --i; )
2164 { 3982 {
3983 ev_tstamp diff;
2165 rtmn_diff = ev_rt_now - mn_now; 3984 rtmn_diff = ev_rt_now - mn_now;
2166 3985
2167 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3986 diff = odiff - rtmn_diff;
3987
3988 if (ecb_expect_true ((diff < EV_TS_CONST (0.) ? -diff : diff) < EV_TS_CONST (MIN_TIMEJUMP)))
2168 return; /* all is well */ 3989 return; /* all is well */
2169 3990
2170 ev_rt_now = ev_time (); 3991 ev_rt_now = ev_time ();
2171 mn_now = get_clock (); 3992 mn_now = get_clock ();
2172 now_floor = mn_now; 3993 now_floor = mn_now;
… …
2181 else 4002 else
2182#endif 4003#endif
2183 { 4004 {
2184 ev_rt_now = ev_time (); 4005 ev_rt_now = ev_time ();
2185 4006
2186 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 4007 if (ecb_expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + EV_TS_CONST (MIN_TIMEJUMP)))
2187 { 4008 {
2188 /* adjust timers. this is easy, as the offset is the same for all of them */ 4009 /* adjust timers. this is easy, as the offset is the same for all of them */
2189 timers_reschedule (EV_A_ ev_rt_now - mn_now); 4010 timers_reschedule (EV_A_ ev_rt_now - mn_now);
2190#if EV_PERIODIC_ENABLE 4011#if EV_PERIODIC_ENABLE
2191 periodics_reschedule (EV_A); 4012 periodics_reschedule (EV_A);
… …
2194 4015
2195 mn_now = ev_rt_now; 4016 mn_now = ev_rt_now;
2196 } 4017 }
2197} 4018}
2198 4019
2199void 4020int
2200ev_loop (EV_P_ int flags) 4021ev_run (EV_P_ int flags)
2201{ 4022{
2202#if EV_MINIMAL < 2 4023#if EV_FEATURE_API
2203 ++loop_depth; 4024 ++loop_depth;
2204#endif 4025#endif
2205 4026
2206 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 4027 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2207 4028
2208 loop_done = EVUNLOOP_CANCEL; 4029 loop_done = EVBREAK_CANCEL;
2209 4030
2210 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 4031 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2211 4032
2212 do 4033 do
2213 { 4034 {
2214#if EV_VERIFY >= 2 4035#if EV_VERIFY >= 2
2215 ev_loop_verify (EV_A); 4036 ev_verify (EV_A);
2216#endif 4037#endif
2217 4038
2218#ifndef _WIN32 4039#ifndef _WIN32
2219 if (expect_false (curpid)) /* penalise the forking check even more */ 4040 if (ecb_expect_false (curpid)) /* penalise the forking check even more */
2220 if (expect_false (getpid () != curpid)) 4041 if (ecb_expect_false (getpid () != curpid))
2221 { 4042 {
2222 curpid = getpid (); 4043 curpid = getpid ();
2223 postfork = 1; 4044 postfork = 1;
2224 } 4045 }
2225#endif 4046#endif
2226 4047
2227#if EV_FORK_ENABLE 4048#if EV_FORK_ENABLE
2228 /* we might have forked, so queue fork handlers */ 4049 /* we might have forked, so queue fork handlers */
2229 if (expect_false (postfork)) 4050 if (ecb_expect_false (postfork))
2230 if (forkcnt) 4051 if (forkcnt)
2231 { 4052 {
2232 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 4053 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2233 EV_INVOKE_PENDING; 4054 EV_INVOKE_PENDING;
2234 } 4055 }
2235#endif 4056#endif
2236 4057
4058#if EV_PREPARE_ENABLE
2237 /* queue prepare watchers (and execute them) */ 4059 /* queue prepare watchers (and execute them) */
2238 if (expect_false (preparecnt)) 4060 if (ecb_expect_false (preparecnt))
2239 { 4061 {
2240 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 4062 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2241 EV_INVOKE_PENDING; 4063 EV_INVOKE_PENDING;
2242 } 4064 }
4065#endif
2243 4066
2244 if (expect_false (loop_done)) 4067 if (ecb_expect_false (loop_done))
2245 break; 4068 break;
2246 4069
2247 /* we might have forked, so reify kernel state if necessary */ 4070 /* we might have forked, so reify kernel state if necessary */
2248 if (expect_false (postfork)) 4071 if (ecb_expect_false (postfork))
2249 loop_fork (EV_A); 4072 loop_fork (EV_A);
2250 4073
2251 /* update fd-related kernel structures */ 4074 /* update fd-related kernel structures */
2252 fd_reify (EV_A); 4075 fd_reify (EV_A);
2253 4076
2254 /* calculate blocking time */ 4077 /* calculate blocking time */
2255 { 4078 {
2256 ev_tstamp waittime = 0.; 4079 ev_tstamp waittime = 0.;
2257 ev_tstamp sleeptime = 0.; 4080 ev_tstamp sleeptime = 0.;
2258 4081
4082 /* remember old timestamp for io_blocktime calculation */
4083 ev_tstamp prev_mn_now = mn_now;
4084
4085 /* update time to cancel out callback processing overhead */
4086 time_update (EV_A_ EV_TS_CONST (EV_TSTAMP_HUGE));
4087
4088 /* from now on, we want a pipe-wake-up */
4089 pipe_write_wanted = 1;
4090
4091 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
4092
2259 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 4093 if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2260 { 4094 {
2261 /* remember old timestamp for io_blocktime calculation */
2262 ev_tstamp prev_mn_now = mn_now;
2263
2264 /* update time to cancel out callback processing overhead */
2265 time_update (EV_A_ 1e100);
2266
2267 waittime = MAX_BLOCKTIME; 4095 waittime = EV_TS_CONST (MAX_BLOCKTIME);
4096
4097#if EV_USE_TIMERFD
4098 /* sleep a lot longer when we can reliably detect timejumps */
4099 if (ecb_expect_true (timerfd >= 0))
4100 waittime = EV_TS_CONST (MAX_BLOCKTIME2);
4101#endif
4102#if !EV_PERIODIC_ENABLE
4103 /* without periodics but with monotonic clock there is no need */
4104 /* for any time jump detection, so sleep longer */
4105 if (ecb_expect_true (have_monotonic))
4106 waittime = EV_TS_CONST (MAX_BLOCKTIME2);
4107#endif
2268 4108
2269 if (timercnt) 4109 if (timercnt)
2270 { 4110 {
2271 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 4111 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2272 if (waittime > to) waittime = to; 4112 if (waittime > to) waittime = to;
2273 } 4113 }
2274 4114
2275#if EV_PERIODIC_ENABLE 4115#if EV_PERIODIC_ENABLE
2276 if (periodiccnt) 4116 if (periodiccnt)
2277 { 4117 {
2278 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 4118 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2279 if (waittime > to) waittime = to; 4119 if (waittime > to) waittime = to;
2280 } 4120 }
2281#endif 4121#endif
2282 4122
2283 /* don't let timeouts decrease the waittime below timeout_blocktime */ 4123 /* don't let timeouts decrease the waittime below timeout_blocktime */
2284 if (expect_false (waittime < timeout_blocktime)) 4124 if (ecb_expect_false (waittime < timeout_blocktime))
2285 waittime = timeout_blocktime; 4125 waittime = timeout_blocktime;
2286 4126
4127 /* now there are two more special cases left, either we have
4128 * already-expired timers, so we should not sleep, or we have timers
4129 * that expire very soon, in which case we need to wait for a minimum
4130 * amount of time for some event loop backends.
4131 */
4132 if (ecb_expect_false (waittime < backend_mintime))
4133 waittime = waittime <= EV_TS_CONST (0.)
4134 ? EV_TS_CONST (0.)
4135 : backend_mintime;
4136
2287 /* extra check because io_blocktime is commonly 0 */ 4137 /* extra check because io_blocktime is commonly 0 */
2288 if (expect_false (io_blocktime)) 4138 if (ecb_expect_false (io_blocktime))
2289 { 4139 {
2290 sleeptime = io_blocktime - (mn_now - prev_mn_now); 4140 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2291 4141
2292 if (sleeptime > waittime - backend_fudge) 4142 if (sleeptime > waittime - backend_mintime)
2293 sleeptime = waittime - backend_fudge; 4143 sleeptime = waittime - backend_mintime;
2294 4144
2295 if (expect_true (sleeptime > 0.)) 4145 if (ecb_expect_true (sleeptime > EV_TS_CONST (0.)))
2296 { 4146 {
2297 ev_sleep (sleeptime); 4147 ev_sleep (sleeptime);
2298 waittime -= sleeptime; 4148 waittime -= sleeptime;
2299 } 4149 }
2300 } 4150 }
2301 } 4151 }
2302 4152
2303#if EV_MINIMAL < 2 4153#if EV_FEATURE_API
2304 ++loop_count; 4154 ++loop_count;
2305#endif 4155#endif
2306 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 4156 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2307 backend_poll (EV_A_ waittime); 4157 backend_poll (EV_A_ waittime);
2308 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 4158 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
4159
4160 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
4161
4162 ECB_MEMORY_FENCE_ACQUIRE;
4163 if (pipe_write_skipped)
4164 {
4165 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
4166 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
4167 }
2309 4168
2310 /* update ev_rt_now, do magic */ 4169 /* update ev_rt_now, do magic */
2311 time_update (EV_A_ waittime + sleeptime); 4170 time_update (EV_A_ waittime + sleeptime);
2312 } 4171 }
2313 4172
… …
2320#if EV_IDLE_ENABLE 4179#if EV_IDLE_ENABLE
2321 /* queue idle watchers unless other events are pending */ 4180 /* queue idle watchers unless other events are pending */
2322 idle_reify (EV_A); 4181 idle_reify (EV_A);
2323#endif 4182#endif
2324 4183
4184#if EV_CHECK_ENABLE
2325 /* queue check watchers, to be executed first */ 4185 /* queue check watchers, to be executed first */
2326 if (expect_false (checkcnt)) 4186 if (ecb_expect_false (checkcnt))
2327 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 4187 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
4188#endif
2328 4189
2329 EV_INVOKE_PENDING; 4190 EV_INVOKE_PENDING;
2330 } 4191 }
2331 while (expect_true ( 4192 while (ecb_expect_true (
2332 activecnt 4193 activecnt
2333 && !loop_done 4194 && !loop_done
2334 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 4195 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2335 )); 4196 ));
2336 4197
2337 if (loop_done == EVUNLOOP_ONE) 4198 if (loop_done == EVBREAK_ONE)
2338 loop_done = EVUNLOOP_CANCEL; 4199 loop_done = EVBREAK_CANCEL;
2339 4200
2340#if EV_MINIMAL < 2 4201#if EV_FEATURE_API
2341 --loop_depth; 4202 --loop_depth;
2342#endif 4203#endif
4204
4205 return activecnt;
2343} 4206}
2344 4207
2345void 4208void
2346ev_unloop (EV_P_ int how) 4209ev_break (EV_P_ int how) EV_NOEXCEPT
2347{ 4210{
2348 loop_done = how; 4211 loop_done = how;
2349} 4212}
2350 4213
2351void 4214void
2352ev_ref (EV_P) 4215ev_ref (EV_P) EV_NOEXCEPT
2353{ 4216{
2354 ++activecnt; 4217 ++activecnt;
2355} 4218}
2356 4219
2357void 4220void
2358ev_unref (EV_P) 4221ev_unref (EV_P) EV_NOEXCEPT
2359{ 4222{
2360 --activecnt; 4223 --activecnt;
2361} 4224}
2362 4225
2363void 4226void
2364ev_now_update (EV_P) 4227ev_now_update (EV_P) EV_NOEXCEPT
2365{ 4228{
2366 time_update (EV_A_ 1e100); 4229 time_update (EV_A_ EV_TSTAMP_HUGE);
2367} 4230}
2368 4231
2369void 4232void
2370ev_suspend (EV_P) 4233ev_suspend (EV_P) EV_NOEXCEPT
2371{ 4234{
2372 ev_now_update (EV_A); 4235 ev_now_update (EV_A);
2373} 4236}
2374 4237
2375void 4238void
2376ev_resume (EV_P) 4239ev_resume (EV_P) EV_NOEXCEPT
2377{ 4240{
2378 ev_tstamp mn_prev = mn_now; 4241 ev_tstamp mn_prev = mn_now;
2379 4242
2380 ev_now_update (EV_A); 4243 ev_now_update (EV_A);
2381 timers_reschedule (EV_A_ mn_now - mn_prev); 4244 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2398inline_size void 4261inline_size void
2399wlist_del (WL *head, WL elem) 4262wlist_del (WL *head, WL elem)
2400{ 4263{
2401 while (*head) 4264 while (*head)
2402 { 4265 {
2403 if (expect_true (*head == elem)) 4266 if (ecb_expect_true (*head == elem))
2404 { 4267 {
2405 *head = elem->next; 4268 *head = elem->next;
2406 break; 4269 break;
2407 } 4270 }
2408 4271
… …
2420 w->pending = 0; 4283 w->pending = 0;
2421 } 4284 }
2422} 4285}
2423 4286
2424int 4287int
2425ev_clear_pending (EV_P_ void *w) 4288ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
2426{ 4289{
2427 W w_ = (W)w; 4290 W w_ = (W)w;
2428 int pending = w_->pending; 4291 int pending = w_->pending;
2429 4292
2430 if (expect_true (pending)) 4293 if (ecb_expect_true (pending))
2431 { 4294 {
2432 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 4295 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2433 p->w = (W)&pending_w; 4296 p->w = (W)&pending_w;
2434 w_->pending = 0; 4297 w_->pending = 0;
2435 return p->events; 4298 return p->events;
… …
2462 w->active = 0; 4325 w->active = 0;
2463} 4326}
2464 4327
2465/*****************************************************************************/ 4328/*****************************************************************************/
2466 4329
2467void noinline 4330ecb_noinline
4331void
2468ev_io_start (EV_P_ ev_io *w) 4332ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
2469{ 4333{
2470 int fd = w->fd; 4334 int fd = w->fd;
2471 4335
2472 if (expect_false (ev_is_active (w))) 4336 if (ecb_expect_false (ev_is_active (w)))
2473 return; 4337 return;
2474 4338
2475 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 4339 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2476 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 4340 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2477 4341
4342#if EV_VERIFY >= 2
4343 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
4344#endif
2478 EV_FREQUENT_CHECK; 4345 EV_FREQUENT_CHECK;
2479 4346
2480 ev_start (EV_A_ (W)w, 1); 4347 ev_start (EV_A_ (W)w, 1);
2481 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 4348 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
2482 wlist_add (&anfds[fd].head, (WL)w); 4349 wlist_add (&anfds[fd].head, (WL)w);
4350
4351 /* common bug, apparently */
4352 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
2483 4353
2484 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 4354 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2485 w->events &= ~EV__IOFDSET; 4355 w->events &= ~EV__IOFDSET;
2486 4356
2487 EV_FREQUENT_CHECK; 4357 EV_FREQUENT_CHECK;
2488} 4358}
2489 4359
2490void noinline 4360ecb_noinline
4361void
2491ev_io_stop (EV_P_ ev_io *w) 4362ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
2492{ 4363{
2493 clear_pending (EV_A_ (W)w); 4364 clear_pending (EV_A_ (W)w);
2494 if (expect_false (!ev_is_active (w))) 4365 if (ecb_expect_false (!ev_is_active (w)))
2495 return; 4366 return;
2496 4367
2497 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 4368 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2498 4369
4370#if EV_VERIFY >= 2
4371 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
4372#endif
2499 EV_FREQUENT_CHECK; 4373 EV_FREQUENT_CHECK;
2500 4374
2501 wlist_del (&anfds[w->fd].head, (WL)w); 4375 wlist_del (&anfds[w->fd].head, (WL)w);
2502 ev_stop (EV_A_ (W)w); 4376 ev_stop (EV_A_ (W)w);
2503 4377
2504 fd_change (EV_A_ w->fd, 1); 4378 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2505 4379
2506 EV_FREQUENT_CHECK; 4380 EV_FREQUENT_CHECK;
2507} 4381}
2508 4382
2509void noinline 4383ecb_noinline
4384void
2510ev_timer_start (EV_P_ ev_timer *w) 4385ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
2511{ 4386{
2512 if (expect_false (ev_is_active (w))) 4387 if (ecb_expect_false (ev_is_active (w)))
2513 return; 4388 return;
2514 4389
2515 ev_at (w) += mn_now; 4390 ev_at (w) += mn_now;
2516 4391
2517 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 4392 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2518 4393
2519 EV_FREQUENT_CHECK; 4394 EV_FREQUENT_CHECK;
2520 4395
2521 ++timercnt; 4396 ++timercnt;
2522 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 4397 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
2523 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 4398 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
2524 ANHE_w (timers [ev_active (w)]) = (WT)w; 4399 ANHE_w (timers [ev_active (w)]) = (WT)w;
2525 ANHE_at_cache (timers [ev_active (w)]); 4400 ANHE_at_cache (timers [ev_active (w)]);
2526 upheap (timers, ev_active (w)); 4401 upheap (timers, ev_active (w));
2527 4402
2528 EV_FREQUENT_CHECK; 4403 EV_FREQUENT_CHECK;
2529 4404
2530 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 4405 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2531} 4406}
2532 4407
2533void noinline 4408ecb_noinline
4409void
2534ev_timer_stop (EV_P_ ev_timer *w) 4410ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
2535{ 4411{
2536 clear_pending (EV_A_ (W)w); 4412 clear_pending (EV_A_ (W)w);
2537 if (expect_false (!ev_is_active (w))) 4413 if (ecb_expect_false (!ev_is_active (w)))
2538 return; 4414 return;
2539 4415
2540 EV_FREQUENT_CHECK; 4416 EV_FREQUENT_CHECK;
2541 4417
2542 { 4418 {
… …
2544 4420
2545 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 4421 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2546 4422
2547 --timercnt; 4423 --timercnt;
2548 4424
2549 if (expect_true (active < timercnt + HEAP0)) 4425 if (ecb_expect_true (active < timercnt + HEAP0))
2550 { 4426 {
2551 timers [active] = timers [timercnt + HEAP0]; 4427 timers [active] = timers [timercnt + HEAP0];
2552 adjustheap (timers, timercnt, active); 4428 adjustheap (timers, timercnt, active);
2553 } 4429 }
2554 } 4430 }
2555 4431
4432 ev_at (w) -= mn_now;
4433
4434 ev_stop (EV_A_ (W)w);
4435
2556 EV_FREQUENT_CHECK; 4436 EV_FREQUENT_CHECK;
2557
2558 ev_at (w) -= mn_now;
2559
2560 ev_stop (EV_A_ (W)w);
2561} 4437}
2562 4438
2563void noinline 4439ecb_noinline
4440void
2564ev_timer_again (EV_P_ ev_timer *w) 4441ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
2565{ 4442{
2566 EV_FREQUENT_CHECK; 4443 EV_FREQUENT_CHECK;
4444
4445 clear_pending (EV_A_ (W)w);
2567 4446
2568 if (ev_is_active (w)) 4447 if (ev_is_active (w))
2569 { 4448 {
2570 if (w->repeat) 4449 if (w->repeat)
2571 { 4450 {
… …
2584 4463
2585 EV_FREQUENT_CHECK; 4464 EV_FREQUENT_CHECK;
2586} 4465}
2587 4466
2588ev_tstamp 4467ev_tstamp
2589ev_timer_remaining (EV_P_ ev_timer *w) 4468ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
2590{ 4469{
2591 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4470 return ev_at (w) - (ev_is_active (w) ? mn_now : EV_TS_CONST (0.));
2592} 4471}
2593 4472
2594#if EV_PERIODIC_ENABLE 4473#if EV_PERIODIC_ENABLE
2595void noinline 4474ecb_noinline
4475void
2596ev_periodic_start (EV_P_ ev_periodic *w) 4476ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
2597{ 4477{
2598 if (expect_false (ev_is_active (w))) 4478 if (ecb_expect_false (ev_is_active (w)))
2599 return; 4479 return;
4480
4481#if EV_USE_TIMERFD
4482 if (timerfd == -2)
4483 evtimerfd_init (EV_A);
4484#endif
2600 4485
2601 if (w->reschedule_cb) 4486 if (w->reschedule_cb)
2602 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4487 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2603 else if (w->interval) 4488 else if (w->interval)
2604 { 4489 {
2605 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 4490 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2606 /* this formula differs from the one in periodic_reify because we do not always round up */ 4491 periodic_recalc (EV_A_ w);
2607 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2608 } 4492 }
2609 else 4493 else
2610 ev_at (w) = w->offset; 4494 ev_at (w) = w->offset;
2611 4495
2612 EV_FREQUENT_CHECK; 4496 EV_FREQUENT_CHECK;
2613 4497
2614 ++periodiccnt; 4498 ++periodiccnt;
2615 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4499 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2616 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4500 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
2617 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4501 ANHE_w (periodics [ev_active (w)]) = (WT)w;
2618 ANHE_at_cache (periodics [ev_active (w)]); 4502 ANHE_at_cache (periodics [ev_active (w)]);
2619 upheap (periodics, ev_active (w)); 4503 upheap (periodics, ev_active (w));
2620 4504
2621 EV_FREQUENT_CHECK; 4505 EV_FREQUENT_CHECK;
2622 4506
2623 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4507 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2624} 4508}
2625 4509
2626void noinline 4510ecb_noinline
4511void
2627ev_periodic_stop (EV_P_ ev_periodic *w) 4512ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
2628{ 4513{
2629 clear_pending (EV_A_ (W)w); 4514 clear_pending (EV_A_ (W)w);
2630 if (expect_false (!ev_is_active (w))) 4515 if (ecb_expect_false (!ev_is_active (w)))
2631 return; 4516 return;
2632 4517
2633 EV_FREQUENT_CHECK; 4518 EV_FREQUENT_CHECK;
2634 4519
2635 { 4520 {
… …
2637 4522
2638 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 4523 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2639 4524
2640 --periodiccnt; 4525 --periodiccnt;
2641 4526
2642 if (expect_true (active < periodiccnt + HEAP0)) 4527 if (ecb_expect_true (active < periodiccnt + HEAP0))
2643 { 4528 {
2644 periodics [active] = periodics [periodiccnt + HEAP0]; 4529 periodics [active] = periodics [periodiccnt + HEAP0];
2645 adjustheap (periodics, periodiccnt, active); 4530 adjustheap (periodics, periodiccnt, active);
2646 } 4531 }
2647 } 4532 }
2648 4533
4534 ev_stop (EV_A_ (W)w);
4535
2649 EV_FREQUENT_CHECK; 4536 EV_FREQUENT_CHECK;
2650
2651 ev_stop (EV_A_ (W)w);
2652} 4537}
2653 4538
2654void noinline 4539ecb_noinline
4540void
2655ev_periodic_again (EV_P_ ev_periodic *w) 4541ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
2656{ 4542{
2657 /* TODO: use adjustheap and recalculation */ 4543 /* TODO: use adjustheap and recalculation */
2658 ev_periodic_stop (EV_A_ w); 4544 ev_periodic_stop (EV_A_ w);
2659 ev_periodic_start (EV_A_ w); 4545 ev_periodic_start (EV_A_ w);
2660} 4546}
… …
2662 4548
2663#ifndef SA_RESTART 4549#ifndef SA_RESTART
2664# define SA_RESTART 0 4550# define SA_RESTART 0
2665#endif 4551#endif
2666 4552
2667void noinline 4553#if EV_SIGNAL_ENABLE
4554
4555ecb_noinline
4556void
2668ev_signal_start (EV_P_ ev_signal *w) 4557ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
2669{ 4558{
2670 if (expect_false (ev_is_active (w))) 4559 if (ecb_expect_false (ev_is_active (w)))
2671 return; 4560 return;
2672 4561
2673 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4562 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2674 4563
2675#if EV_MULTIPLICITY 4564#if EV_MULTIPLICITY
2676 assert (("libev: a signal must not be attached to two different loops", 4565 assert (("libev: a signal must not be attached to two different loops",
2677 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4566 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2678 4567
2679 signals [w->signum - 1].loop = EV_A; 4568 signals [w->signum - 1].loop = EV_A;
4569 ECB_MEMORY_FENCE_RELEASE;
2680#endif 4570#endif
2681 4571
2682 EV_FREQUENT_CHECK; 4572 EV_FREQUENT_CHECK;
2683 4573
2684#if EV_USE_SIGNALFD 4574#if EV_USE_SIGNALFD
… …
2717 if (!((WL)w)->next) 4607 if (!((WL)w)->next)
2718# if EV_USE_SIGNALFD 4608# if EV_USE_SIGNALFD
2719 if (sigfd < 0) /*TODO*/ 4609 if (sigfd < 0) /*TODO*/
2720# endif 4610# endif
2721 { 4611 {
2722# if _WIN32 4612# ifdef _WIN32
4613 evpipe_init (EV_A);
4614
2723 signal (w->signum, ev_sighandler); 4615 signal (w->signum, ev_sighandler);
2724# else 4616# else
2725 struct sigaction sa; 4617 struct sigaction sa;
2726 4618
2727 evpipe_init (EV_A); 4619 evpipe_init (EV_A);
… …
2729 sa.sa_handler = ev_sighandler; 4621 sa.sa_handler = ev_sighandler;
2730 sigfillset (&sa.sa_mask); 4622 sigfillset (&sa.sa_mask);
2731 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 4623 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2732 sigaction (w->signum, &sa, 0); 4624 sigaction (w->signum, &sa, 0);
2733 4625
4626 if (origflags & EVFLAG_NOSIGMASK)
4627 {
2734 sigemptyset (&sa.sa_mask); 4628 sigemptyset (&sa.sa_mask);
2735 sigaddset (&sa.sa_mask, w->signum); 4629 sigaddset (&sa.sa_mask, w->signum);
2736 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 4630 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
4631 }
2737#endif 4632#endif
2738 } 4633 }
2739 4634
2740 EV_FREQUENT_CHECK; 4635 EV_FREQUENT_CHECK;
2741} 4636}
2742 4637
2743void noinline 4638ecb_noinline
4639void
2744ev_signal_stop (EV_P_ ev_signal *w) 4640ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
2745{ 4641{
2746 clear_pending (EV_A_ (W)w); 4642 clear_pending (EV_A_ (W)w);
2747 if (expect_false (!ev_is_active (w))) 4643 if (ecb_expect_false (!ev_is_active (w)))
2748 return; 4644 return;
2749 4645
2750 EV_FREQUENT_CHECK; 4646 EV_FREQUENT_CHECK;
2751 4647
2752 wlist_del (&signals [w->signum - 1].head, (WL)w); 4648 wlist_del (&signals [w->signum - 1].head, (WL)w);
… …
2758 signals [w->signum - 1].loop = 0; /* unattach from signal */ 4654 signals [w->signum - 1].loop = 0; /* unattach from signal */
2759#endif 4655#endif
2760#if EV_USE_SIGNALFD 4656#if EV_USE_SIGNALFD
2761 if (sigfd >= 0) 4657 if (sigfd >= 0)
2762 { 4658 {
2763 sigprocmask (SIG_UNBLOCK, &sigfd_set, 0);//D 4659 sigset_t ss;
4660
4661 sigemptyset (&ss);
4662 sigaddset (&ss, w->signum);
2764 sigdelset (&sigfd_set, w->signum); 4663 sigdelset (&sigfd_set, w->signum);
4664
2765 signalfd (sigfd, &sigfd_set, 0); 4665 signalfd (sigfd, &sigfd_set, 0);
2766 sigprocmask (SIG_BLOCK, &sigfd_set, 0);//D 4666 sigprocmask (SIG_UNBLOCK, &ss, 0);
2767 /*TODO: maybe unblock signal? */
2768 } 4667 }
2769 else 4668 else
2770#endif 4669#endif
2771 signal (w->signum, SIG_DFL); 4670 signal (w->signum, SIG_DFL);
2772 } 4671 }
2773 4672
2774 EV_FREQUENT_CHECK; 4673 EV_FREQUENT_CHECK;
2775} 4674}
2776 4675
4676#endif
4677
4678#if EV_CHILD_ENABLE
4679
2777void 4680void
2778ev_child_start (EV_P_ ev_child *w) 4681ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
2779{ 4682{
2780#if EV_MULTIPLICITY 4683#if EV_MULTIPLICITY
2781 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4684 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2782#endif 4685#endif
2783 if (expect_false (ev_is_active (w))) 4686 if (ecb_expect_false (ev_is_active (w)))
2784 return; 4687 return;
2785 4688
2786 EV_FREQUENT_CHECK; 4689 EV_FREQUENT_CHECK;
2787 4690
2788 ev_start (EV_A_ (W)w, 1); 4691 ev_start (EV_A_ (W)w, 1);
2789 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4692 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2790 4693
2791 EV_FREQUENT_CHECK; 4694 EV_FREQUENT_CHECK;
2792} 4695}
2793 4696
2794void 4697void
2795ev_child_stop (EV_P_ ev_child *w) 4698ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
2796{ 4699{
2797 clear_pending (EV_A_ (W)w); 4700 clear_pending (EV_A_ (W)w);
2798 if (expect_false (!ev_is_active (w))) 4701 if (ecb_expect_false (!ev_is_active (w)))
2799 return; 4702 return;
2800 4703
2801 EV_FREQUENT_CHECK; 4704 EV_FREQUENT_CHECK;
2802 4705
2803 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4706 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2804 ev_stop (EV_A_ (W)w); 4707 ev_stop (EV_A_ (W)w);
2805 4708
2806 EV_FREQUENT_CHECK; 4709 EV_FREQUENT_CHECK;
2807} 4710}
4711
4712#endif
2808 4713
2809#if EV_STAT_ENABLE 4714#if EV_STAT_ENABLE
2810 4715
2811# ifdef _WIN32 4716# ifdef _WIN32
2812# undef lstat 4717# undef lstat
… …
2815 4720
2816#define DEF_STAT_INTERVAL 5.0074891 4721#define DEF_STAT_INTERVAL 5.0074891
2817#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4722#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2818#define MIN_STAT_INTERVAL 0.1074891 4723#define MIN_STAT_INTERVAL 0.1074891
2819 4724
2820static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4725ecb_noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2821 4726
2822#if EV_USE_INOTIFY 4727#if EV_USE_INOTIFY
2823# define EV_INOTIFY_BUFSIZE 8192
2824 4728
2825static void noinline 4729/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
4730# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
4731
4732ecb_noinline
4733static void
2826infy_add (EV_P_ ev_stat *w) 4734infy_add (EV_P_ ev_stat *w)
2827{ 4735{
2828 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); 4736 w->wd = inotify_add_watch (fs_fd, w->path,
4737 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4738 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4739 | IN_DONT_FOLLOW | IN_MASK_ADD);
2829 4740
2830 if (w->wd < 0) 4741 if (w->wd >= 0)
4742 {
4743 struct statfs sfs;
4744
4745 /* now local changes will be tracked by inotify, but remote changes won't */
4746 /* unless the filesystem is known to be local, we therefore still poll */
4747 /* also do poll on <2.6.25, but with normal frequency */
4748
4749 if (!fs_2625)
4750 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
4751 else if (!statfs (w->path, &sfs)
4752 && (sfs.f_type == 0x1373 /* devfs */
4753 || sfs.f_type == 0x4006 /* fat */
4754 || sfs.f_type == 0x4d44 /* msdos */
4755 || sfs.f_type == 0xEF53 /* ext2/3 */
4756 || sfs.f_type == 0x72b6 /* jffs2 */
4757 || sfs.f_type == 0x858458f6 /* ramfs */
4758 || sfs.f_type == 0x5346544e /* ntfs */
4759 || sfs.f_type == 0x3153464a /* jfs */
4760 || sfs.f_type == 0x9123683e /* btrfs */
4761 || sfs.f_type == 0x52654973 /* reiser3 */
4762 || sfs.f_type == 0x01021994 /* tmpfs */
4763 || sfs.f_type == 0x58465342 /* xfs */))
4764 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
4765 else
4766 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2831 { 4767 }
4768 else
4769 {
4770 /* can't use inotify, continue to stat */
2832 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4771 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2833 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2834 4772
2835 /* monitor some parent directory for speedup hints */ 4773 /* if path is not there, monitor some parent directory for speedup hints */
2836 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 4774 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2837 /* but an efficiency issue only */ 4775 /* but an efficiency issue only */
2838 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 4776 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2839 { 4777 {
2840 char path [4096]; 4778 char path [4096];
… …
2850 if (!pend || pend == path) 4788 if (!pend || pend == path)
2851 break; 4789 break;
2852 4790
2853 *pend = 0; 4791 *pend = 0;
2854 w->wd = inotify_add_watch (fs_fd, path, mask); 4792 w->wd = inotify_add_watch (fs_fd, path, mask);
2855 } 4793 }
2856 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 4794 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2857 } 4795 }
2858 } 4796 }
2859 4797
2860 if (w->wd >= 0) 4798 if (w->wd >= 0)
2861 {
2862 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4799 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2863 4800
2864 /* now local changes will be tracked by inotify, but remote changes won't */ 4801 /* now re-arm timer, if required */
2865 /* unless the filesystem it known to be local, we therefore still poll */ 4802 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2866 /* also do poll on <2.6.25, but with normal frequency */
2867 struct statfs sfs;
2868
2869 if (fs_2625 && !statfs (w->path, &sfs))
2870 if (sfs.f_type == 0x1373 /* devfs */
2871 || sfs.f_type == 0xEF53 /* ext2/3 */
2872 || sfs.f_type == 0x3153464a /* jfs */
2873 || sfs.f_type == 0x52654973 /* reiser3 */
2874 || sfs.f_type == 0x01021994 /* tempfs */
2875 || sfs.f_type == 0x58465342 /* xfs */)
2876 return;
2877
2878 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2879 ev_timer_again (EV_A_ &w->timer); 4803 ev_timer_again (EV_A_ &w->timer);
2880 } 4804 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2881} 4805}
2882 4806
2883static void noinline 4807ecb_noinline
4808static void
2884infy_del (EV_P_ ev_stat *w) 4809infy_del (EV_P_ ev_stat *w)
2885{ 4810{
2886 int slot; 4811 int slot;
2887 int wd = w->wd; 4812 int wd = w->wd;
2888 4813
2889 if (wd < 0) 4814 if (wd < 0)
2890 return; 4815 return;
2891 4816
2892 w->wd = -2; 4817 w->wd = -2;
2893 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 4818 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2894 wlist_del (&fs_hash [slot].head, (WL)w); 4819 wlist_del (&fs_hash [slot].head, (WL)w);
2895 4820
2896 /* remove this watcher, if others are watching it, they will rearm */ 4821 /* remove this watcher, if others are watching it, they will rearm */
2897 inotify_rm_watch (fs_fd, wd); 4822 inotify_rm_watch (fs_fd, wd);
2898} 4823}
2899 4824
2900static void noinline 4825ecb_noinline
4826static void
2901infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4827infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2902{ 4828{
2903 if (slot < 0) 4829 if (slot < 0)
2904 /* overflow, need to check for all hash slots */ 4830 /* overflow, need to check for all hash slots */
2905 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4831 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2906 infy_wd (EV_A_ slot, wd, ev); 4832 infy_wd (EV_A_ slot, wd, ev);
2907 else 4833 else
2908 { 4834 {
2909 WL w_; 4835 WL w_;
2910 4836
2911 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 4837 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2912 { 4838 {
2913 ev_stat *w = (ev_stat *)w_; 4839 ev_stat *w = (ev_stat *)w_;
2914 w_ = w_->next; /* lets us remove this watcher and all before it */ 4840 w_ = w_->next; /* lets us remove this watcher and all before it */
2915 4841
2916 if (w->wd == wd || wd == -1) 4842 if (w->wd == wd || wd == -1)
2917 { 4843 {
2918 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 4844 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2919 { 4845 {
2920 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4846 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2921 w->wd = -1; 4847 w->wd = -1;
2922 infy_add (EV_A_ w); /* re-add, no matter what */ 4848 infy_add (EV_A_ w); /* re-add, no matter what */
2923 } 4849 }
2924 4850
2925 stat_timer_cb (EV_A_ &w->timer, 0); 4851 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2930 4856
2931static void 4857static void
2932infy_cb (EV_P_ ev_io *w, int revents) 4858infy_cb (EV_P_ ev_io *w, int revents)
2933{ 4859{
2934 char buf [EV_INOTIFY_BUFSIZE]; 4860 char buf [EV_INOTIFY_BUFSIZE];
2935 struct inotify_event *ev = (struct inotify_event *)buf;
2936 int ofs; 4861 int ofs;
2937 int len = read (fs_fd, buf, sizeof (buf)); 4862 int len = read (fs_fd, buf, sizeof (buf));
2938 4863
2939 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 4864 for (ofs = 0; ofs < len; )
4865 {
4866 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2940 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4867 infy_wd (EV_A_ ev->wd, ev->wd, ev);
4868 ofs += sizeof (struct inotify_event) + ev->len;
4869 }
2941} 4870}
2942 4871
2943inline_size void 4872inline_size ecb_cold
4873void
2944check_2625 (EV_P) 4874ev_check_2625 (EV_P)
2945{ 4875{
2946 /* kernels < 2.6.25 are borked 4876 /* kernels < 2.6.25 are borked
2947 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4877 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2948 */ 4878 */
2949 struct utsname buf; 4879 if (ev_linux_version () < 0x020619)
2950 int major, minor, micro;
2951
2952 if (uname (&buf))
2953 return; 4880 return;
2954 4881
2955 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2956 return;
2957
2958 if (major < 2
2959 || (major == 2 && minor < 6)
2960 || (major == 2 && minor == 6 && micro < 25))
2961 return;
2962
2963 fs_2625 = 1; 4882 fs_2625 = 1;
4883}
4884
4885inline_size int
4886infy_newfd (void)
4887{
4888#if defined IN_CLOEXEC && defined IN_NONBLOCK
4889 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
4890 if (fd >= 0)
4891 return fd;
4892#endif
4893 return inotify_init ();
2964} 4894}
2965 4895
2966inline_size void 4896inline_size void
2967infy_init (EV_P) 4897infy_init (EV_P)
2968{ 4898{
2969 if (fs_fd != -2) 4899 if (fs_fd != -2)
2970 return; 4900 return;
2971 4901
2972 fs_fd = -1; 4902 fs_fd = -1;
2973 4903
2974 check_2625 (EV_A); 4904 ev_check_2625 (EV_A);
2975 4905
2976 fs_fd = inotify_init (); 4906 fs_fd = infy_newfd ();
2977 4907
2978 if (fs_fd >= 0) 4908 if (fs_fd >= 0)
2979 { 4909 {
4910 fd_intern (fs_fd);
2980 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 4911 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2981 ev_set_priority (&fs_w, EV_MAXPRI); 4912 ev_set_priority (&fs_w, EV_MAXPRI);
2982 ev_io_start (EV_A_ &fs_w); 4913 ev_io_start (EV_A_ &fs_w);
4914 ev_unref (EV_A);
2983 } 4915 }
2984} 4916}
2985 4917
2986inline_size void 4918inline_size void
2987infy_fork (EV_P) 4919infy_fork (EV_P)
… …
2989 int slot; 4921 int slot;
2990 4922
2991 if (fs_fd < 0) 4923 if (fs_fd < 0)
2992 return; 4924 return;
2993 4925
4926 ev_ref (EV_A);
4927 ev_io_stop (EV_A_ &fs_w);
2994 close (fs_fd); 4928 close (fs_fd);
2995 fs_fd = inotify_init (); 4929 fs_fd = infy_newfd ();
2996 4930
4931 if (fs_fd >= 0)
4932 {
4933 fd_intern (fs_fd);
4934 ev_io_set (&fs_w, fs_fd, EV_READ);
4935 ev_io_start (EV_A_ &fs_w);
4936 ev_unref (EV_A);
4937 }
4938
2997 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4939 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2998 { 4940 {
2999 WL w_ = fs_hash [slot].head; 4941 WL w_ = fs_hash [slot].head;
3000 fs_hash [slot].head = 0; 4942 fs_hash [slot].head = 0;
3001 4943
3002 while (w_) 4944 while (w_)
… …
3007 w->wd = -1; 4949 w->wd = -1;
3008 4950
3009 if (fs_fd >= 0) 4951 if (fs_fd >= 0)
3010 infy_add (EV_A_ w); /* re-add, no matter what */ 4952 infy_add (EV_A_ w); /* re-add, no matter what */
3011 else 4953 else
4954 {
4955 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
4956 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3012 ev_timer_again (EV_A_ &w->timer); 4957 ev_timer_again (EV_A_ &w->timer);
4958 if (ev_is_active (&w->timer)) ev_unref (EV_A);
4959 }
3013 } 4960 }
3014 } 4961 }
3015} 4962}
3016 4963
3017#endif 4964#endif
… …
3021#else 4968#else
3022# define EV_LSTAT(p,b) lstat (p, b) 4969# define EV_LSTAT(p,b) lstat (p, b)
3023#endif 4970#endif
3024 4971
3025void 4972void
3026ev_stat_stat (EV_P_ ev_stat *w) 4973ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
3027{ 4974{
3028 if (lstat (w->path, &w->attr) < 0) 4975 if (lstat (w->path, &w->attr) < 0)
3029 w->attr.st_nlink = 0; 4976 w->attr.st_nlink = 0;
3030 else if (!w->attr.st_nlink) 4977 else if (!w->attr.st_nlink)
3031 w->attr.st_nlink = 1; 4978 w->attr.st_nlink = 1;
3032} 4979}
3033 4980
3034static void noinline 4981ecb_noinline
4982static void
3035stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4983stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3036{ 4984{
3037 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4985 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3038 4986
3039 /* we copy this here each the time so that */ 4987 ev_statdata prev = w->attr;
3040 /* prev has the old value when the callback gets invoked */
3041 w->prev = w->attr;
3042 ev_stat_stat (EV_A_ w); 4988 ev_stat_stat (EV_A_ w);
3043 4989
3044 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 4990 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
3045 if ( 4991 if (
3046 w->prev.st_dev != w->attr.st_dev 4992 prev.st_dev != w->attr.st_dev
3047 || w->prev.st_ino != w->attr.st_ino 4993 || prev.st_ino != w->attr.st_ino
3048 || w->prev.st_mode != w->attr.st_mode 4994 || prev.st_mode != w->attr.st_mode
3049 || w->prev.st_nlink != w->attr.st_nlink 4995 || prev.st_nlink != w->attr.st_nlink
3050 || w->prev.st_uid != w->attr.st_uid 4996 || prev.st_uid != w->attr.st_uid
3051 || w->prev.st_gid != w->attr.st_gid 4997 || prev.st_gid != w->attr.st_gid
3052 || w->prev.st_rdev != w->attr.st_rdev 4998 || prev.st_rdev != w->attr.st_rdev
3053 || w->prev.st_size != w->attr.st_size 4999 || prev.st_size != w->attr.st_size
3054 || w->prev.st_atime != w->attr.st_atime 5000 || prev.st_atime != w->attr.st_atime
3055 || w->prev.st_mtime != w->attr.st_mtime 5001 || prev.st_mtime != w->attr.st_mtime
3056 || w->prev.st_ctime != w->attr.st_ctime 5002 || prev.st_ctime != w->attr.st_ctime
3057 ) { 5003 ) {
5004 /* we only update w->prev on actual differences */
5005 /* in case we test more often than invoke the callback, */
5006 /* to ensure that prev is always different to attr */
5007 w->prev = prev;
5008
3058 #if EV_USE_INOTIFY 5009 #if EV_USE_INOTIFY
3059 if (fs_fd >= 0) 5010 if (fs_fd >= 0)
3060 { 5011 {
3061 infy_del (EV_A_ w); 5012 infy_del (EV_A_ w);
3062 infy_add (EV_A_ w); 5013 infy_add (EV_A_ w);
… …
3067 ev_feed_event (EV_A_ w, EV_STAT); 5018 ev_feed_event (EV_A_ w, EV_STAT);
3068 } 5019 }
3069} 5020}
3070 5021
3071void 5022void
3072ev_stat_start (EV_P_ ev_stat *w) 5023ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
3073{ 5024{
3074 if (expect_false (ev_is_active (w))) 5025 if (ecb_expect_false (ev_is_active (w)))
3075 return; 5026 return;
3076 5027
3077 ev_stat_stat (EV_A_ w); 5028 ev_stat_stat (EV_A_ w);
3078 5029
3079 if (w->interval < MIN_STAT_INTERVAL && w->interval) 5030 if (w->interval < MIN_STAT_INTERVAL && w->interval)
… …
3087 5038
3088 if (fs_fd >= 0) 5039 if (fs_fd >= 0)
3089 infy_add (EV_A_ w); 5040 infy_add (EV_A_ w);
3090 else 5041 else
3091#endif 5042#endif
5043 {
3092 ev_timer_again (EV_A_ &w->timer); 5044 ev_timer_again (EV_A_ &w->timer);
5045 ev_unref (EV_A);
5046 }
3093 5047
3094 ev_start (EV_A_ (W)w, 1); 5048 ev_start (EV_A_ (W)w, 1);
3095 5049
3096 EV_FREQUENT_CHECK; 5050 EV_FREQUENT_CHECK;
3097} 5051}
3098 5052
3099void 5053void
3100ev_stat_stop (EV_P_ ev_stat *w) 5054ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
3101{ 5055{
3102 clear_pending (EV_A_ (W)w); 5056 clear_pending (EV_A_ (W)w);
3103 if (expect_false (!ev_is_active (w))) 5057 if (ecb_expect_false (!ev_is_active (w)))
3104 return; 5058 return;
3105 5059
3106 EV_FREQUENT_CHECK; 5060 EV_FREQUENT_CHECK;
3107 5061
3108#if EV_USE_INOTIFY 5062#if EV_USE_INOTIFY
3109 infy_del (EV_A_ w); 5063 infy_del (EV_A_ w);
3110#endif 5064#endif
5065
5066 if (ev_is_active (&w->timer))
5067 {
5068 ev_ref (EV_A);
3111 ev_timer_stop (EV_A_ &w->timer); 5069 ev_timer_stop (EV_A_ &w->timer);
5070 }
3112 5071
3113 ev_stop (EV_A_ (W)w); 5072 ev_stop (EV_A_ (W)w);
3114 5073
3115 EV_FREQUENT_CHECK; 5074 EV_FREQUENT_CHECK;
3116} 5075}
3117#endif 5076#endif
3118 5077
3119#if EV_IDLE_ENABLE 5078#if EV_IDLE_ENABLE
3120void 5079void
3121ev_idle_start (EV_P_ ev_idle *w) 5080ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
3122{ 5081{
3123 if (expect_false (ev_is_active (w))) 5082 if (ecb_expect_false (ev_is_active (w)))
3124 return; 5083 return;
3125 5084
3126 pri_adjust (EV_A_ (W)w); 5085 pri_adjust (EV_A_ (W)w);
3127 5086
3128 EV_FREQUENT_CHECK; 5087 EV_FREQUENT_CHECK;
… …
3131 int active = ++idlecnt [ABSPRI (w)]; 5090 int active = ++idlecnt [ABSPRI (w)];
3132 5091
3133 ++idleall; 5092 ++idleall;
3134 ev_start (EV_A_ (W)w, active); 5093 ev_start (EV_A_ (W)w, active);
3135 5094
3136 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 5095 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
3137 idles [ABSPRI (w)][active - 1] = w; 5096 idles [ABSPRI (w)][active - 1] = w;
3138 } 5097 }
3139 5098
3140 EV_FREQUENT_CHECK; 5099 EV_FREQUENT_CHECK;
3141} 5100}
3142 5101
3143void 5102void
3144ev_idle_stop (EV_P_ ev_idle *w) 5103ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
3145{ 5104{
3146 clear_pending (EV_A_ (W)w); 5105 clear_pending (EV_A_ (W)w);
3147 if (expect_false (!ev_is_active (w))) 5106 if (ecb_expect_false (!ev_is_active (w)))
3148 return; 5107 return;
3149 5108
3150 EV_FREQUENT_CHECK; 5109 EV_FREQUENT_CHECK;
3151 5110
3152 { 5111 {
… …
3161 5120
3162 EV_FREQUENT_CHECK; 5121 EV_FREQUENT_CHECK;
3163} 5122}
3164#endif 5123#endif
3165 5124
5125#if EV_PREPARE_ENABLE
3166void 5126void
3167ev_prepare_start (EV_P_ ev_prepare *w) 5127ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
3168{ 5128{
3169 if (expect_false (ev_is_active (w))) 5129 if (ecb_expect_false (ev_is_active (w)))
3170 return; 5130 return;
3171 5131
3172 EV_FREQUENT_CHECK; 5132 EV_FREQUENT_CHECK;
3173 5133
3174 ev_start (EV_A_ (W)w, ++preparecnt); 5134 ev_start (EV_A_ (W)w, ++preparecnt);
3175 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 5135 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
3176 prepares [preparecnt - 1] = w; 5136 prepares [preparecnt - 1] = w;
3177 5137
3178 EV_FREQUENT_CHECK; 5138 EV_FREQUENT_CHECK;
3179} 5139}
3180 5140
3181void 5141void
3182ev_prepare_stop (EV_P_ ev_prepare *w) 5142ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
3183{ 5143{
3184 clear_pending (EV_A_ (W)w); 5144 clear_pending (EV_A_ (W)w);
3185 if (expect_false (!ev_is_active (w))) 5145 if (ecb_expect_false (!ev_is_active (w)))
3186 return; 5146 return;
3187 5147
3188 EV_FREQUENT_CHECK; 5148 EV_FREQUENT_CHECK;
3189 5149
3190 { 5150 {
… …
3196 5156
3197 ev_stop (EV_A_ (W)w); 5157 ev_stop (EV_A_ (W)w);
3198 5158
3199 EV_FREQUENT_CHECK; 5159 EV_FREQUENT_CHECK;
3200} 5160}
5161#endif
3201 5162
5163#if EV_CHECK_ENABLE
3202void 5164void
3203ev_check_start (EV_P_ ev_check *w) 5165ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
3204{ 5166{
3205 if (expect_false (ev_is_active (w))) 5167 if (ecb_expect_false (ev_is_active (w)))
3206 return; 5168 return;
3207 5169
3208 EV_FREQUENT_CHECK; 5170 EV_FREQUENT_CHECK;
3209 5171
3210 ev_start (EV_A_ (W)w, ++checkcnt); 5172 ev_start (EV_A_ (W)w, ++checkcnt);
3211 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 5173 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
3212 checks [checkcnt - 1] = w; 5174 checks [checkcnt - 1] = w;
3213 5175
3214 EV_FREQUENT_CHECK; 5176 EV_FREQUENT_CHECK;
3215} 5177}
3216 5178
3217void 5179void
3218ev_check_stop (EV_P_ ev_check *w) 5180ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
3219{ 5181{
3220 clear_pending (EV_A_ (W)w); 5182 clear_pending (EV_A_ (W)w);
3221 if (expect_false (!ev_is_active (w))) 5183 if (ecb_expect_false (!ev_is_active (w)))
3222 return; 5184 return;
3223 5185
3224 EV_FREQUENT_CHECK; 5186 EV_FREQUENT_CHECK;
3225 5187
3226 { 5188 {
… …
3232 5194
3233 ev_stop (EV_A_ (W)w); 5195 ev_stop (EV_A_ (W)w);
3234 5196
3235 EV_FREQUENT_CHECK; 5197 EV_FREQUENT_CHECK;
3236} 5198}
5199#endif
3237 5200
3238#if EV_EMBED_ENABLE 5201#if EV_EMBED_ENABLE
3239void noinline 5202ecb_noinline
5203void
3240ev_embed_sweep (EV_P_ ev_embed *w) 5204ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
3241{ 5205{
3242 ev_loop (w->other, EVLOOP_NONBLOCK); 5206 ev_run (w->other, EVRUN_NOWAIT);
3243} 5207}
3244 5208
3245static void 5209static void
3246embed_io_cb (EV_P_ ev_io *io, int revents) 5210embed_io_cb (EV_P_ ev_io *io, int revents)
3247{ 5211{
3248 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 5212 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3249 5213
3250 if (ev_cb (w)) 5214 if (ev_cb (w))
3251 ev_feed_event (EV_A_ (W)w, EV_EMBED); 5215 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3252 else 5216 else
3253 ev_loop (w->other, EVLOOP_NONBLOCK); 5217 ev_run (w->other, EVRUN_NOWAIT);
3254} 5218}
3255 5219
3256static void 5220static void
3257embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 5221embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3258{ 5222{
… …
3262 EV_P = w->other; 5226 EV_P = w->other;
3263 5227
3264 while (fdchangecnt) 5228 while (fdchangecnt)
3265 { 5229 {
3266 fd_reify (EV_A); 5230 fd_reify (EV_A);
3267 ev_loop (EV_A_ EVLOOP_NONBLOCK); 5231 ev_run (EV_A_ EVRUN_NOWAIT);
3268 } 5232 }
3269 } 5233 }
3270} 5234}
3271 5235
5236#if EV_FORK_ENABLE
3272static void 5237static void
3273embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) 5238embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
3274{ 5239{
3275 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 5240 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3276 5241
… …
3278 5243
3279 { 5244 {
3280 EV_P = w->other; 5245 EV_P = w->other;
3281 5246
3282 ev_loop_fork (EV_A); 5247 ev_loop_fork (EV_A);
3283 ev_loop (EV_A_ EVLOOP_NONBLOCK); 5248 ev_run (EV_A_ EVRUN_NOWAIT);
3284 } 5249 }
3285 5250
3286 ev_embed_start (EV_A_ w); 5251 ev_embed_start (EV_A_ w);
3287} 5252}
5253#endif
3288 5254
3289#if 0 5255#if 0
3290static void 5256static void
3291embed_idle_cb (EV_P_ ev_idle *idle, int revents) 5257embed_idle_cb (EV_P_ ev_idle *idle, int revents)
3292{ 5258{
3293 ev_idle_stop (EV_A_ idle); 5259 ev_idle_stop (EV_A_ idle);
3294} 5260}
3295#endif 5261#endif
3296 5262
3297void 5263void
3298ev_embed_start (EV_P_ ev_embed *w) 5264ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
3299{ 5265{
3300 if (expect_false (ev_is_active (w))) 5266 if (ecb_expect_false (ev_is_active (w)))
3301 return; 5267 return;
3302 5268
3303 { 5269 {
3304 EV_P = w->other; 5270 EV_P = w->other;
3305 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 5271 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
… …
3313 5279
3314 ev_prepare_init (&w->prepare, embed_prepare_cb); 5280 ev_prepare_init (&w->prepare, embed_prepare_cb);
3315 ev_set_priority (&w->prepare, EV_MINPRI); 5281 ev_set_priority (&w->prepare, EV_MINPRI);
3316 ev_prepare_start (EV_A_ &w->prepare); 5282 ev_prepare_start (EV_A_ &w->prepare);
3317 5283
5284#if EV_FORK_ENABLE
3318 ev_fork_init (&w->fork, embed_fork_cb); 5285 ev_fork_init (&w->fork, embed_fork_cb);
3319 ev_fork_start (EV_A_ &w->fork); 5286 ev_fork_start (EV_A_ &w->fork);
5287#endif
3320 5288
3321 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 5289 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
3322 5290
3323 ev_start (EV_A_ (W)w, 1); 5291 ev_start (EV_A_ (W)w, 1);
3324 5292
3325 EV_FREQUENT_CHECK; 5293 EV_FREQUENT_CHECK;
3326} 5294}
3327 5295
3328void 5296void
3329ev_embed_stop (EV_P_ ev_embed *w) 5297ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
3330{ 5298{
3331 clear_pending (EV_A_ (W)w); 5299 clear_pending (EV_A_ (W)w);
3332 if (expect_false (!ev_is_active (w))) 5300 if (ecb_expect_false (!ev_is_active (w)))
3333 return; 5301 return;
3334 5302
3335 EV_FREQUENT_CHECK; 5303 EV_FREQUENT_CHECK;
3336 5304
3337 ev_io_stop (EV_A_ &w->io); 5305 ev_io_stop (EV_A_ &w->io);
3338 ev_prepare_stop (EV_A_ &w->prepare); 5306 ev_prepare_stop (EV_A_ &w->prepare);
5307#if EV_FORK_ENABLE
3339 ev_fork_stop (EV_A_ &w->fork); 5308 ev_fork_stop (EV_A_ &w->fork);
5309#endif
5310
5311 ev_stop (EV_A_ (W)w);
3340 5312
3341 EV_FREQUENT_CHECK; 5313 EV_FREQUENT_CHECK;
3342} 5314}
3343#endif 5315#endif
3344 5316
3345#if EV_FORK_ENABLE 5317#if EV_FORK_ENABLE
3346void 5318void
3347ev_fork_start (EV_P_ ev_fork *w) 5319ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
3348{ 5320{
3349 if (expect_false (ev_is_active (w))) 5321 if (ecb_expect_false (ev_is_active (w)))
3350 return; 5322 return;
3351 5323
3352 EV_FREQUENT_CHECK; 5324 EV_FREQUENT_CHECK;
3353 5325
3354 ev_start (EV_A_ (W)w, ++forkcnt); 5326 ev_start (EV_A_ (W)w, ++forkcnt);
3355 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 5327 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
3356 forks [forkcnt - 1] = w; 5328 forks [forkcnt - 1] = w;
3357 5329
3358 EV_FREQUENT_CHECK; 5330 EV_FREQUENT_CHECK;
3359} 5331}
3360 5332
3361void 5333void
3362ev_fork_stop (EV_P_ ev_fork *w) 5334ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
3363{ 5335{
3364 clear_pending (EV_A_ (W)w); 5336 clear_pending (EV_A_ (W)w);
3365 if (expect_false (!ev_is_active (w))) 5337 if (ecb_expect_false (!ev_is_active (w)))
3366 return; 5338 return;
3367 5339
3368 EV_FREQUENT_CHECK; 5340 EV_FREQUENT_CHECK;
3369 5341
3370 { 5342 {
… …
3378 5350
3379 EV_FREQUENT_CHECK; 5351 EV_FREQUENT_CHECK;
3380} 5352}
3381#endif 5353#endif
3382 5354
5355#if EV_CLEANUP_ENABLE
5356void
5357ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
5358{
5359 if (ecb_expect_false (ev_is_active (w)))
5360 return;
5361
5362 EV_FREQUENT_CHECK;
5363
5364 ev_start (EV_A_ (W)w, ++cleanupcnt);
5365 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
5366 cleanups [cleanupcnt - 1] = w;
5367
5368 /* cleanup watchers should never keep a refcount on the loop */
5369 ev_unref (EV_A);
5370 EV_FREQUENT_CHECK;
5371}
5372
5373void
5374ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
5375{
5376 clear_pending (EV_A_ (W)w);
5377 if (ecb_expect_false (!ev_is_active (w)))
5378 return;
5379
5380 EV_FREQUENT_CHECK;
5381 ev_ref (EV_A);
5382
5383 {
5384 int active = ev_active (w);
5385
5386 cleanups [active - 1] = cleanups [--cleanupcnt];
5387 ev_active (cleanups [active - 1]) = active;
5388 }
5389
5390 ev_stop (EV_A_ (W)w);
5391
5392 EV_FREQUENT_CHECK;
5393}
5394#endif
5395
3383#if EV_ASYNC_ENABLE 5396#if EV_ASYNC_ENABLE
3384void 5397void
3385ev_async_start (EV_P_ ev_async *w) 5398ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
3386{ 5399{
3387 if (expect_false (ev_is_active (w))) 5400 if (ecb_expect_false (ev_is_active (w)))
3388 return; 5401 return;
3389 5402
5403 w->sent = 0;
5404
3390 evpipe_init (EV_A); 5405 evpipe_init (EV_A);
3391 5406
3392 EV_FREQUENT_CHECK; 5407 EV_FREQUENT_CHECK;
3393 5408
3394 ev_start (EV_A_ (W)w, ++asynccnt); 5409 ev_start (EV_A_ (W)w, ++asynccnt);
3395 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 5410 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
3396 asyncs [asynccnt - 1] = w; 5411 asyncs [asynccnt - 1] = w;
3397 5412
3398 EV_FREQUENT_CHECK; 5413 EV_FREQUENT_CHECK;
3399} 5414}
3400 5415
3401void 5416void
3402ev_async_stop (EV_P_ ev_async *w) 5417ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
3403{ 5418{
3404 clear_pending (EV_A_ (W)w); 5419 clear_pending (EV_A_ (W)w);
3405 if (expect_false (!ev_is_active (w))) 5420 if (ecb_expect_false (!ev_is_active (w)))
3406 return; 5421 return;
3407 5422
3408 EV_FREQUENT_CHECK; 5423 EV_FREQUENT_CHECK;
3409 5424
3410 { 5425 {
… …
3418 5433
3419 EV_FREQUENT_CHECK; 5434 EV_FREQUENT_CHECK;
3420} 5435}
3421 5436
3422void 5437void
3423ev_async_send (EV_P_ ev_async *w) 5438ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
3424{ 5439{
3425 w->sent = 1; 5440 w->sent = 1;
3426 evpipe_write (EV_A_ &async_pending); 5441 evpipe_write (EV_A_ &async_pending);
3427} 5442}
3428#endif 5443#endif
… …
3465 5480
3466 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5481 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3467} 5482}
3468 5483
3469void 5484void
3470ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 5485ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
3471{ 5486{
3472 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5487 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3473
3474 if (expect_false (!once))
3475 {
3476 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
3477 return;
3478 }
3479 5488
3480 once->cb = cb; 5489 once->cb = cb;
3481 once->arg = arg; 5490 once->arg = arg;
3482 5491
3483 ev_init (&once->io, once_cb_io); 5492 ev_init (&once->io, once_cb_io);
… …
3496} 5505}
3497 5506
3498/*****************************************************************************/ 5507/*****************************************************************************/
3499 5508
3500#if EV_WALK_ENABLE 5509#if EV_WALK_ENABLE
5510ecb_cold
3501void 5511void
3502ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 5512ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
3503{ 5513{
3504 int i, j; 5514 int i, j;
3505 ev_watcher_list *wl, *wn; 5515 ev_watcher_list *wl, *wn;
3506 5516
3507 if (types & (EV_IO | EV_EMBED)) 5517 if (types & (EV_IO | EV_EMBED))
… …
3550 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 5560 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3551#endif 5561#endif
3552 5562
3553#if EV_IDLE_ENABLE 5563#if EV_IDLE_ENABLE
3554 if (types & EV_IDLE) 5564 if (types & EV_IDLE)
3555 for (j = NUMPRI; i--; ) 5565 for (j = NUMPRI; j--; )
3556 for (i = idlecnt [j]; i--; ) 5566 for (i = idlecnt [j]; i--; )
3557 cb (EV_A_ EV_IDLE, idles [j][i]); 5567 cb (EV_A_ EV_IDLE, idles [j][i]);
3558#endif 5568#endif
3559 5569
3560#if EV_FORK_ENABLE 5570#if EV_FORK_ENABLE
… …
3568 if (types & EV_ASYNC) 5578 if (types & EV_ASYNC)
3569 for (i = asynccnt; i--; ) 5579 for (i = asynccnt; i--; )
3570 cb (EV_A_ EV_ASYNC, asyncs [i]); 5580 cb (EV_A_ EV_ASYNC, asyncs [i]);
3571#endif 5581#endif
3572 5582
5583#if EV_PREPARE_ENABLE
3573 if (types & EV_PREPARE) 5584 if (types & EV_PREPARE)
3574 for (i = preparecnt; i--; ) 5585 for (i = preparecnt; i--; )
3575#if EV_EMBED_ENABLE 5586# if EV_EMBED_ENABLE
3576 if (ev_cb (prepares [i]) != embed_prepare_cb) 5587 if (ev_cb (prepares [i]) != embed_prepare_cb)
3577#endif 5588# endif
3578 cb (EV_A_ EV_PREPARE, prepares [i]); 5589 cb (EV_A_ EV_PREPARE, prepares [i]);
5590#endif
3579 5591
5592#if EV_CHECK_ENABLE
3580 if (types & EV_CHECK) 5593 if (types & EV_CHECK)
3581 for (i = checkcnt; i--; ) 5594 for (i = checkcnt; i--; )
3582 cb (EV_A_ EV_CHECK, checks [i]); 5595 cb (EV_A_ EV_CHECK, checks [i]);
5596#endif
3583 5597
5598#if EV_SIGNAL_ENABLE
3584 if (types & EV_SIGNAL) 5599 if (types & EV_SIGNAL)
3585 for (i = 0; i < EV_NSIG - 1; ++i) 5600 for (i = 0; i < EV_NSIG - 1; ++i)
3586 for (wl = signals [i].head; wl; ) 5601 for (wl = signals [i].head; wl; )
3587 { 5602 {
3588 wn = wl->next; 5603 wn = wl->next;
3589 cb (EV_A_ EV_SIGNAL, wl); 5604 cb (EV_A_ EV_SIGNAL, wl);
3590 wl = wn; 5605 wl = wn;
3591 } 5606 }
5607#endif
3592 5608
5609#if EV_CHILD_ENABLE
3593 if (types & EV_CHILD) 5610 if (types & EV_CHILD)
3594 for (i = EV_PID_HASHSIZE; i--; ) 5611 for (i = (EV_PID_HASHSIZE); i--; )
3595 for (wl = childs [i]; wl; ) 5612 for (wl = childs [i]; wl; )
3596 { 5613 {
3597 wn = wl->next; 5614 wn = wl->next;
3598 cb (EV_A_ EV_CHILD, wl); 5615 cb (EV_A_ EV_CHILD, wl);
3599 wl = wn; 5616 wl = wn;
3600 } 5617 }
5618#endif
3601/* EV_STAT 0x00001000 /* stat data changed */ 5619/* EV_STAT 0x00001000 /* stat data changed */
3602/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 5620/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3603} 5621}
3604#endif 5622#endif
3605 5623
3606#if EV_MULTIPLICITY 5624#if EV_MULTIPLICITY
3607 #include "ev_wrap.h" 5625 #include "ev_wrap.h"
3608#endif 5626#endif
3609 5627
3610#ifdef __cplusplus
3611}
3612#endif
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