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Comparing libev/ev.c (file contents):
Revision 1.330 by root, Tue Mar 9 08:46:17 2010 UTC vs.
Revision 1.506 by root, Thu Jul 11 05:41:39 2019 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009,2010 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007-2019 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
10 * 1. Redistributions of source code must retain the above copyright notice, 10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer. 11 * this list of conditions and the following disclaimer.
12 * 12 *
13 * 2. Redistributions in binary form must reproduce the above copyright 13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the 14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution. 15 * documentation and/or other materials provided with the distribution.
16 * 16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- 18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO 19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- 20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
… …
35 * and other provisions required by the GPL. If you do not delete the 35 * and other provisions required by the GPL. If you do not delete the
36 * provisions above, a recipient may use your version of this file under 36 * provisions above, a recipient may use your version of this file under
37 * either the BSD or the GPL. 37 * either the BSD or the GPL.
38 */ 38 */
39 39
40#ifdef __cplusplus
41extern "C" {
42#endif
43
44/* this big block deduces configuration from config.h */ 40/* this big block deduces configuration from config.h */
45#ifndef EV_STANDALONE 41#ifndef EV_STANDALONE
46# ifdef EV_CONFIG_H 42# ifdef EV_CONFIG_H
47# include EV_CONFIG_H 43# include EV_CONFIG_H
48# else 44# else
49# include "config.h" 45# include "config.h"
46# endif
47
48# if HAVE_FLOOR
49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1
51# endif
50# endif 52# endif
51 53
52# if HAVE_CLOCK_SYSCALL 54# if HAVE_CLOCK_SYSCALL
53# ifndef EV_USE_CLOCK_SYSCALL 55# ifndef EV_USE_CLOCK_SYSCALL
54# define EV_USE_CLOCK_SYSCALL 1 56# define EV_USE_CLOCK_SYSCALL 1
… …
57# endif 59# endif
58# ifndef EV_USE_MONOTONIC 60# ifndef EV_USE_MONOTONIC
59# define EV_USE_MONOTONIC 1 61# define EV_USE_MONOTONIC 1
60# endif 62# endif
61# endif 63# endif
62# elif !defined(EV_USE_CLOCK_SYSCALL) 64# elif !defined EV_USE_CLOCK_SYSCALL
63# define EV_USE_CLOCK_SYSCALL 0 65# define EV_USE_CLOCK_SYSCALL 0
64# endif 66# endif
65 67
66# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
67# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
… …
77# ifndef EV_USE_REALTIME 79# ifndef EV_USE_REALTIME
78# define EV_USE_REALTIME 0 80# define EV_USE_REALTIME 0
79# endif 81# endif
80# endif 82# endif
81 83
84# if HAVE_NANOSLEEP
82# ifndef EV_USE_NANOSLEEP 85# ifndef EV_USE_NANOSLEEP
83# if HAVE_NANOSLEEP
84# define EV_USE_NANOSLEEP 1 86# define EV_USE_NANOSLEEP EV_FEATURE_OS
87# endif
85# else 88# else
89# undef EV_USE_NANOSLEEP
86# define EV_USE_NANOSLEEP 0 90# define EV_USE_NANOSLEEP 0
91# endif
92
93# if HAVE_SELECT && HAVE_SYS_SELECT_H
94# ifndef EV_USE_SELECT
95# define EV_USE_SELECT EV_FEATURE_BACKENDS
87# endif 96# endif
97# else
98# undef EV_USE_SELECT
99# define EV_USE_SELECT 0
88# endif 100# endif
89 101
102# if HAVE_POLL && HAVE_POLL_H
90# ifndef EV_USE_SELECT 103# ifndef EV_USE_POLL
91# if HAVE_SELECT && HAVE_SYS_SELECT_H 104# define EV_USE_POLL EV_FEATURE_BACKENDS
92# define EV_USE_SELECT 1
93# else
94# define EV_USE_SELECT 0
95# endif 105# endif
96# endif
97
98# ifndef EV_USE_POLL
99# if HAVE_POLL && HAVE_POLL_H
100# define EV_USE_POLL 1
101# else 106# else
107# undef EV_USE_POLL
102# define EV_USE_POLL 0 108# define EV_USE_POLL 0
103# endif
104# endif 109# endif
105 110
106# ifndef EV_USE_EPOLL
107# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 111# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
108# define EV_USE_EPOLL 1 112# ifndef EV_USE_EPOLL
109# else 113# define EV_USE_EPOLL EV_FEATURE_BACKENDS
110# define EV_USE_EPOLL 0
111# endif 114# endif
115# else
116# undef EV_USE_EPOLL
117# define EV_USE_EPOLL 0
112# endif 118# endif
113 119
114# ifndef EV_USE_KQUEUE 120# if HAVE_LINUX_AIO_ABI_H
115# if HAVE_KQUEUE && HAVE_SYS_EVENT_H 121# ifndef EV_USE_LINUXAIO
116# define EV_USE_KQUEUE 1 122# define EV_USE_LINUXAIO EV_FEATURE_BACKENDS
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
122# ifndef EV_USE_PORT 129# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
123# if HAVE_PORT_H && HAVE_PORT_CREATE 130# ifndef EV_USE_KQUEUE
124# define EV_USE_PORT 1 131# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
125# else
126# define EV_USE_PORT 0
127# endif 132# endif
133# else
134# undef EV_USE_KQUEUE
135# define EV_USE_KQUEUE 0
128# endif 136# endif
129 137
138# if HAVE_PORT_H && HAVE_PORT_CREATE
130# ifndef EV_USE_INOTIFY 139# ifndef EV_USE_PORT
131# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 140# define EV_USE_PORT EV_FEATURE_BACKENDS
132# define EV_USE_INOTIFY 1
133# else
134# define EV_USE_INOTIFY 0
135# endif 141# endif
142# else
143# undef EV_USE_PORT
144# define EV_USE_PORT 0
136# endif 145# endif
137 146
147# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
138# ifndef EV_USE_SIGNALFD 148# ifndef EV_USE_INOTIFY
139# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H 149# define EV_USE_INOTIFY EV_FEATURE_OS
140# define EV_USE_SIGNALFD 1
141# else
142# define EV_USE_SIGNALFD 0
143# endif 150# endif
151# else
152# undef EV_USE_INOTIFY
153# define EV_USE_INOTIFY 0
144# endif 154# endif
145 155
156# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
146# ifndef EV_USE_EVENTFD 157# ifndef EV_USE_SIGNALFD
147# if HAVE_EVENTFD 158# define EV_USE_SIGNALFD EV_FEATURE_OS
148# define EV_USE_EVENTFD 1
149# else
150# define EV_USE_EVENTFD 0
151# endif 159# endif
160# else
161# undef EV_USE_SIGNALFD
162# define EV_USE_SIGNALFD 0
163# endif
164
165# if HAVE_EVENTFD
166# ifndef EV_USE_EVENTFD
167# define EV_USE_EVENTFD EV_FEATURE_OS
168# endif
169# else
170# undef EV_USE_EVENTFD
171# define EV_USE_EVENTFD 0
152# endif 172# endif
153 173
154#endif 174#endif
155 175
156#include <math.h> 176/* OS X, in its infinite idiocy, actually HARDCODES
177 * a limit of 1024 into their select. Where people have brains,
178 * OS X engineers apparently have a vacuum. Or maybe they were
179 * ordered to have a vacuum, or they do anything for money.
180 * This might help. Or not.
181 * Note that this must be defined early, as other include files
182 * will rely on this define as well.
183 */
184#define _DARWIN_UNLIMITED_SELECT 1
185
157#include <stdlib.h> 186#include <stdlib.h>
158#include <string.h> 187#include <string.h>
159#include <fcntl.h> 188#include <fcntl.h>
160#include <stddef.h> 189#include <stddef.h>
161 190
… …
171 200
172#ifdef EV_H 201#ifdef EV_H
173# include EV_H 202# include EV_H
174#else 203#else
175# include "ev.h" 204# include "ev.h"
205#endif
206
207#if EV_NO_THREADS
208# undef EV_NO_SMP
209# define EV_NO_SMP 1
210# undef ECB_NO_THREADS
211# define ECB_NO_THREADS 1
212#endif
213#if EV_NO_SMP
214# undef EV_NO_SMP
215# define ECB_NO_SMP 1
176#endif 216#endif
177 217
178#ifndef _WIN32 218#ifndef _WIN32
179# include <sys/time.h> 219# include <sys/time.h>
180# include <sys/wait.h> 220# include <sys/wait.h>
181# include <unistd.h> 221# include <unistd.h>
182#else 222#else
183# include <io.h> 223# include <io.h>
184# define WIN32_LEAN_AND_MEAN 224# define WIN32_LEAN_AND_MEAN
225# include <winsock2.h>
185# include <windows.h> 226# include <windows.h>
186# ifndef EV_SELECT_IS_WINSOCKET 227# ifndef EV_SELECT_IS_WINSOCKET
187# define EV_SELECT_IS_WINSOCKET 1 228# define EV_SELECT_IS_WINSOCKET 1
188# endif 229# endif
230# undef EV_AVOID_STDIO
189#endif 231#endif
190 232
191/* this block tries to deduce configuration from header-defined symbols and defaults */ 233/* this block tries to deduce configuration from header-defined symbols and defaults */
192 234
193/* try to deduce the maximum number of signals on this platform */ 235/* try to deduce the maximum number of signals on this platform */
194#if defined (EV_NSIG) 236#if defined EV_NSIG
195/* use what's provided */ 237/* use what's provided */
196#elif defined (NSIG) 238#elif defined NSIG
197# define EV_NSIG (NSIG) 239# define EV_NSIG (NSIG)
198#elif defined(_NSIG) 240#elif defined _NSIG
199# define EV_NSIG (_NSIG) 241# define EV_NSIG (_NSIG)
200#elif defined (SIGMAX) 242#elif defined SIGMAX
201# define EV_NSIG (SIGMAX+1) 243# define EV_NSIG (SIGMAX+1)
202#elif defined (SIG_MAX) 244#elif defined SIG_MAX
203# define EV_NSIG (SIG_MAX+1) 245# define EV_NSIG (SIG_MAX+1)
204#elif defined (_SIG_MAX) 246#elif defined _SIG_MAX
205# define EV_NSIG (_SIG_MAX+1) 247# define EV_NSIG (_SIG_MAX+1)
206#elif defined (MAXSIG) 248#elif defined MAXSIG
207# define EV_NSIG (MAXSIG+1) 249# define EV_NSIG (MAXSIG+1)
208#elif defined (MAX_SIG) 250#elif defined MAX_SIG
209# define EV_NSIG (MAX_SIG+1) 251# define EV_NSIG (MAX_SIG+1)
210#elif defined (SIGARRAYSIZE) 252#elif defined SIGARRAYSIZE
211# define EV_NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */ 253# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
212#elif defined (_sys_nsig) 254#elif defined _sys_nsig
213# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 255# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
214#else 256#else
215# error "unable to find value for NSIG, please report" 257# define EV_NSIG (8 * sizeof (sigset_t) + 1)
216/* to make it compile regardless, just remove the above line */ 258#endif
217# define EV_NSIG 65 259
260#ifndef EV_USE_FLOOR
261# define EV_USE_FLOOR 0
218#endif 262#endif
219 263
220#ifndef EV_USE_CLOCK_SYSCALL 264#ifndef EV_USE_CLOCK_SYSCALL
221# if __linux && __GLIBC__ >= 2 265# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
222# define EV_USE_CLOCK_SYSCALL 1 266# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
223# else 267# else
224# define EV_USE_CLOCK_SYSCALL 0 268# define EV_USE_CLOCK_SYSCALL 0
225# endif 269# endif
226#endif 270#endif
227 271
272#if !(_POSIX_TIMERS > 0)
273# ifndef EV_USE_MONOTONIC
274# define EV_USE_MONOTONIC 0
275# endif
276# ifndef EV_USE_REALTIME
277# define EV_USE_REALTIME 0
278# endif
279#endif
280
228#ifndef EV_USE_MONOTONIC 281#ifndef EV_USE_MONOTONIC
229# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 282# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
230# define EV_USE_MONOTONIC 1 283# define EV_USE_MONOTONIC EV_FEATURE_OS
231# else 284# else
232# define EV_USE_MONOTONIC 0 285# define EV_USE_MONOTONIC 0
233# endif 286# endif
234#endif 287#endif
235 288
… …
237# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 290# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
238#endif 291#endif
239 292
240#ifndef EV_USE_NANOSLEEP 293#ifndef EV_USE_NANOSLEEP
241# if _POSIX_C_SOURCE >= 199309L 294# if _POSIX_C_SOURCE >= 199309L
242# define EV_USE_NANOSLEEP 1 295# define EV_USE_NANOSLEEP EV_FEATURE_OS
243# else 296# else
244# define EV_USE_NANOSLEEP 0 297# define EV_USE_NANOSLEEP 0
245# endif 298# endif
246#endif 299#endif
247 300
248#ifndef EV_USE_SELECT 301#ifndef EV_USE_SELECT
249# define EV_USE_SELECT 1 302# define EV_USE_SELECT EV_FEATURE_BACKENDS
250#endif 303#endif
251 304
252#ifndef EV_USE_POLL 305#ifndef EV_USE_POLL
253# ifdef _WIN32 306# ifdef _WIN32
254# define EV_USE_POLL 0 307# define EV_USE_POLL 0
255# else 308# else
256# define EV_USE_POLL 1 309# define EV_USE_POLL EV_FEATURE_BACKENDS
257# endif 310# endif
258#endif 311#endif
259 312
260#ifndef EV_USE_EPOLL 313#ifndef EV_USE_EPOLL
261# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 314# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
262# define EV_USE_EPOLL 1 315# define EV_USE_EPOLL EV_FEATURE_BACKENDS
263# else 316# else
264# define EV_USE_EPOLL 0 317# define EV_USE_EPOLL 0
265# endif 318# endif
266#endif 319#endif
267 320
… …
271 324
272#ifndef EV_USE_PORT 325#ifndef EV_USE_PORT
273# define EV_USE_PORT 0 326# define EV_USE_PORT 0
274#endif 327#endif
275 328
329#ifndef EV_USE_LINUXAIO
330# if __linux /* libev currently assumes linux/aio_abi.h is always available on linux */
331# define EV_USE_LINUXAIO 1
332# else
333# define EV_USE_LINUXAIO 0
334# endif
335#endif
336
337#ifndef EV_USE_IOURING
338# if __linux
339# define EV_USE_IOURING 0
340# else
341# define EV_USE_IOURING 0
342# endif
343#endif
344
276#ifndef EV_USE_INOTIFY 345#ifndef EV_USE_INOTIFY
277# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 346# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
278# define EV_USE_INOTIFY 1 347# define EV_USE_INOTIFY EV_FEATURE_OS
279# else 348# else
280# define EV_USE_INOTIFY 0 349# define EV_USE_INOTIFY 0
281# endif 350# endif
282#endif 351#endif
283 352
284#ifndef EV_PID_HASHSIZE 353#ifndef EV_PID_HASHSIZE
285# if EV_MINIMAL 354# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
286# define EV_PID_HASHSIZE 1
287# else
288# define EV_PID_HASHSIZE 16
289# endif
290#endif 355#endif
291 356
292#ifndef EV_INOTIFY_HASHSIZE 357#ifndef EV_INOTIFY_HASHSIZE
293# if EV_MINIMAL 358# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
294# define EV_INOTIFY_HASHSIZE 1
295# else
296# define EV_INOTIFY_HASHSIZE 16
297# endif
298#endif 359#endif
299 360
300#ifndef EV_USE_EVENTFD 361#ifndef EV_USE_EVENTFD
301# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 362# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
302# define EV_USE_EVENTFD 1 363# define EV_USE_EVENTFD EV_FEATURE_OS
303# else 364# else
304# define EV_USE_EVENTFD 0 365# define EV_USE_EVENTFD 0
305# endif 366# endif
306#endif 367#endif
307 368
308#ifndef EV_USE_SIGNALFD 369#ifndef EV_USE_SIGNALFD
309# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 370# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
310# define EV_USE_SIGNALFD 1 371# define EV_USE_SIGNALFD EV_FEATURE_OS
311# else 372# else
312# define EV_USE_SIGNALFD 0 373# define EV_USE_SIGNALFD 0
313# endif 374# endif
314#endif 375#endif
315 376
… …
318# define EV_USE_4HEAP 1 379# define EV_USE_4HEAP 1
319# define EV_HEAP_CACHE_AT 1 380# define EV_HEAP_CACHE_AT 1
320#endif 381#endif
321 382
322#ifndef EV_VERIFY 383#ifndef EV_VERIFY
323# define EV_VERIFY !EV_MINIMAL 384# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
324#endif 385#endif
325 386
326#ifndef EV_USE_4HEAP 387#ifndef EV_USE_4HEAP
327# define EV_USE_4HEAP !EV_MINIMAL 388# define EV_USE_4HEAP EV_FEATURE_DATA
328#endif 389#endif
329 390
330#ifndef EV_HEAP_CACHE_AT 391#ifndef EV_HEAP_CACHE_AT
331# define EV_HEAP_CACHE_AT !EV_MINIMAL 392# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
393#endif
394
395#ifdef __ANDROID__
396/* supposedly, android doesn't typedef fd_mask */
397# undef EV_USE_SELECT
398# define EV_USE_SELECT 0
399/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
400# undef EV_USE_CLOCK_SYSCALL
401# define EV_USE_CLOCK_SYSCALL 0
402#endif
403
404/* aix's poll.h seems to cause lots of trouble */
405#ifdef _AIX
406/* AIX has a completely broken poll.h header */
407# undef EV_USE_POLL
408# define EV_USE_POLL 0
332#endif 409#endif
333 410
334/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 411/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
335/* which makes programs even slower. might work on other unices, too. */ 412/* which makes programs even slower. might work on other unices, too. */
336#if EV_USE_CLOCK_SYSCALL 413#if EV_USE_CLOCK_SYSCALL
337# include <syscall.h> 414# include <sys/syscall.h>
338# ifdef SYS_clock_gettime 415# ifdef SYS_clock_gettime
339# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 416# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
340# undef EV_USE_MONOTONIC 417# undef EV_USE_MONOTONIC
341# define EV_USE_MONOTONIC 1 418# define EV_USE_MONOTONIC 1
419# define EV_NEED_SYSCALL 1
342# else 420# else
343# undef EV_USE_CLOCK_SYSCALL 421# undef EV_USE_CLOCK_SYSCALL
344# define EV_USE_CLOCK_SYSCALL 0 422# define EV_USE_CLOCK_SYSCALL 0
345# endif 423# endif
346#endif 424#endif
347 425
348/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 426/* this block fixes any misconfiguration where we know we run into trouble otherwise */
349 427
350#ifdef _AIX
351/* AIX has a completely broken poll.h header */
352# undef EV_USE_POLL
353# define EV_USE_POLL 0
354#endif
355
356#ifndef CLOCK_MONOTONIC 428#ifndef CLOCK_MONOTONIC
357# undef EV_USE_MONOTONIC 429# undef EV_USE_MONOTONIC
358# define EV_USE_MONOTONIC 0 430# define EV_USE_MONOTONIC 0
359#endif 431#endif
360 432
… …
367# undef EV_USE_INOTIFY 439# undef EV_USE_INOTIFY
368# define EV_USE_INOTIFY 0 440# define EV_USE_INOTIFY 0
369#endif 441#endif
370 442
371#if !EV_USE_NANOSLEEP 443#if !EV_USE_NANOSLEEP
372# ifndef _WIN32 444/* hp-ux has it in sys/time.h, which we unconditionally include above */
445# if !defined _WIN32 && !defined __hpux
373# include <sys/select.h> 446# include <sys/select.h>
374# endif 447# endif
375#endif 448#endif
376 449
450#if EV_USE_LINUXAIO
451# include <sys/syscall.h>
452# if SYS_io_getevents && EV_USE_EPOLL /* linuxaio backend requires epoll backend */
453# define EV_NEED_SYSCALL 1
454# else
455# undef EV_USE_LINUXAIO
456# define EV_USE_LINUXAIO 0
457# endif
458#endif
459
460#if EV_USE_IOURING
461# include <sys/syscall.h>
462# if !SYS_io_uring_setup && __linux && !__alpha
463# define SYS_io_uring_setup 425
464# define SYS_io_uring_enter 426
465# define SYS_io_uring_wregister 427
466# endif
467# if SYS_io_uring_setup && EV_USE_EPOLL /* iouring backend requires epoll backend */
468# define EV_NEED_SYSCALL 1
469# else
470# undef EV_USE_IOURING
471# define EV_USE_IOURING 0
472# endif
473#endif
474
377#if EV_USE_INOTIFY 475#if EV_USE_INOTIFY
378# include <sys/utsname.h>
379# include <sys/statfs.h> 476# include <sys/statfs.h>
380# include <sys/inotify.h> 477# include <sys/inotify.h>
381/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 478/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
382# ifndef IN_DONT_FOLLOW 479# ifndef IN_DONT_FOLLOW
383# undef EV_USE_INOTIFY 480# undef EV_USE_INOTIFY
384# define EV_USE_INOTIFY 0 481# define EV_USE_INOTIFY 0
385# endif 482# endif
386#endif
387
388#if EV_SELECT_IS_WINSOCKET
389# include <winsock.h>
390#endif 483#endif
391 484
392#if EV_USE_EVENTFD 485#if EV_USE_EVENTFD
393/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 486/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
394# include <stdint.h> 487# include <stdint.h>
… …
400# define EFD_CLOEXEC O_CLOEXEC 493# define EFD_CLOEXEC O_CLOEXEC
401# else 494# else
402# define EFD_CLOEXEC 02000000 495# define EFD_CLOEXEC 02000000
403# endif 496# endif
404# endif 497# endif
405# ifdef __cplusplus
406extern "C" {
407# endif
408int (eventfd) (unsigned int initval, int flags); 498EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
409# ifdef __cplusplus
410}
411# endif
412#endif 499#endif
413 500
414#if EV_USE_SIGNALFD 501#if EV_USE_SIGNALFD
415/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 502/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
416# include <stdint.h> 503# include <stdint.h>
… …
422# define SFD_CLOEXEC O_CLOEXEC 509# define SFD_CLOEXEC O_CLOEXEC
423# else 510# else
424# define SFD_CLOEXEC 02000000 511# define SFD_CLOEXEC 02000000
425# endif 512# endif
426# endif 513# endif
427# ifdef __cplusplus
428extern "C" {
429# endif
430int signalfd (int fd, const sigset_t *mask, int flags); 514EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
431 515
432struct signalfd_siginfo 516struct signalfd_siginfo
433{ 517{
434 uint32_t ssi_signo; 518 uint32_t ssi_signo;
435 char pad[128 - sizeof (uint32_t)]; 519 char pad[128 - sizeof (uint32_t)];
436}; 520};
437# ifdef __cplusplus
438}
439# endif 521#endif
440#endif
441 522
442 523/*****************************************************************************/
443/**/
444 524
445#if EV_VERIFY >= 3 525#if EV_VERIFY >= 3
446# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 526# define EV_FREQUENT_CHECK ev_verify (EV_A)
447#else 527#else
448# define EV_FREQUENT_CHECK do { } while (0) 528# define EV_FREQUENT_CHECK do { } while (0)
449#endif 529#endif
450 530
451/* 531/*
452 * This is used to avoid floating point rounding problems. 532 * This is used to work around floating point rounding problems.
453 * It is added to ev_rt_now when scheduling periodics
454 * to ensure progress, time-wise, even when rounding
455 * errors are against us.
456 * This value is good at least till the year 4000. 533 * This value is good at least till the year 4000.
457 * Better solutions welcome.
458 */ 534 */
459#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 535#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
536/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
460 537
461#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 538#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
462#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 539#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
463 540
541/* find a portable timestamp that is "always" in the future but fits into time_t.
542 * this is quite hard, and we are mostly guessing - we handle 32 bit signed/unsigned time_t,
543 * and sizes larger than 32 bit, and maybe the unlikely floating point time_t */
544#define EV_TSTAMP_HUGE \
545 (sizeof (time_t) >= 8 ? 10000000000000. \
546 : 0 < (time_t)4294967295 ? 4294967295. \
547 : 2147483647.) \
548
549#define EV_TS_TO_MS(a) a * 1e3 + 0.9999
550#define EV_TS_FROM_US(us) us * 1e-6
551#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
552#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
553#define EV_TV_GET(tv) ((tv).tv_sec + (tv).tv_usec * 1e-6)
554#define EV_TS_GET(ts) ((ts).tv_sec + (ts).tv_nsec * 1e-9)
555
556/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
557/* ECB.H BEGIN */
558/*
559 * libecb - http://software.schmorp.de/pkg/libecb
560 *
561 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
562 * Copyright (©) 2011 Emanuele Giaquinta
563 * All rights reserved.
564 *
565 * Redistribution and use in source and binary forms, with or without modifica-
566 * tion, are permitted provided that the following conditions are met:
567 *
568 * 1. Redistributions of source code must retain the above copyright notice,
569 * this list of conditions and the following disclaimer.
570 *
571 * 2. Redistributions in binary form must reproduce the above copyright
572 * notice, this list of conditions and the following disclaimer in the
573 * documentation and/or other materials provided with the distribution.
574 *
575 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
576 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
577 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
578 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
579 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
580 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
581 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
582 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
583 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
584 * OF THE POSSIBILITY OF SUCH DAMAGE.
585 *
586 * Alternatively, the contents of this file may be used under the terms of
587 * the GNU General Public License ("GPL") version 2 or any later version,
588 * in which case the provisions of the GPL are applicable instead of
589 * the above. If you wish to allow the use of your version of this file
590 * only under the terms of the GPL and not to allow others to use your
591 * version of this file under the BSD license, indicate your decision
592 * by deleting the provisions above and replace them with the notice
593 * and other provisions required by the GPL. If you do not delete the
594 * provisions above, a recipient may use your version of this file under
595 * either the BSD or the GPL.
596 */
597
598#ifndef ECB_H
599#define ECB_H
600
601/* 16 bits major, 16 bits minor */
602#define ECB_VERSION 0x00010006
603
604#ifdef _WIN32
605 typedef signed char int8_t;
606 typedef unsigned char uint8_t;
607 typedef signed short int16_t;
608 typedef unsigned short uint16_t;
609 typedef signed int int32_t;
610 typedef unsigned int uint32_t;
464#if __GNUC__ >= 4 611 #if __GNUC__
465# define expect(expr,value) __builtin_expect ((expr),(value)) 612 typedef signed long long int64_t;
466# define noinline __attribute__ ((noinline)) 613 typedef unsigned long long uint64_t;
614 #else /* _MSC_VER || __BORLANDC__ */
615 typedef signed __int64 int64_t;
616 typedef unsigned __int64 uint64_t;
617 #endif
618 #ifdef _WIN64
619 #define ECB_PTRSIZE 8
620 typedef uint64_t uintptr_t;
621 typedef int64_t intptr_t;
622 #else
623 #define ECB_PTRSIZE 4
624 typedef uint32_t uintptr_t;
625 typedef int32_t intptr_t;
626 #endif
467#else 627#else
468# define expect(expr,value) (expr) 628 #include <inttypes.h>
469# define noinline 629 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
470# if __STDC_VERSION__ < 199901L && __GNUC__ < 2 630 #define ECB_PTRSIZE 8
471# define inline 631 #else
632 #define ECB_PTRSIZE 4
633 #endif
472# endif 634#endif
635
636#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
637#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
638
639/* work around x32 idiocy by defining proper macros */
640#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
641 #if _ILP32
642 #define ECB_AMD64_X32 1
643 #else
644 #define ECB_AMD64 1
473#endif 645 #endif
646#endif
474 647
475#define expect_false(expr) expect ((expr) != 0, 0) 648/* many compilers define _GNUC_ to some versions but then only implement
476#define expect_true(expr) expect ((expr) != 0, 1) 649 * what their idiot authors think are the "more important" extensions,
477#define inline_size static inline 650 * causing enormous grief in return for some better fake benchmark numbers.
478 651 * or so.
479#if EV_MINIMAL 652 * we try to detect these and simply assume they are not gcc - if they have
480# define inline_speed static noinline 653 * an issue with that they should have done it right in the first place.
654 */
655#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
656 #define ECB_GCC_VERSION(major,minor) 0
481#else 657#else
658 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
659#endif
660
661#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
662
663#if __clang__ && defined __has_builtin
664 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
665#else
666 #define ECB_CLANG_BUILTIN(x) 0
667#endif
668
669#if __clang__ && defined __has_extension
670 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
671#else
672 #define ECB_CLANG_EXTENSION(x) 0
673#endif
674
675#define ECB_CPP (__cplusplus+0)
676#define ECB_CPP11 (__cplusplus >= 201103L)
677#define ECB_CPP14 (__cplusplus >= 201402L)
678#define ECB_CPP17 (__cplusplus >= 201703L)
679
680#if ECB_CPP
681 #define ECB_C 0
682 #define ECB_STDC_VERSION 0
683#else
684 #define ECB_C 1
685 #define ECB_STDC_VERSION __STDC_VERSION__
686#endif
687
688#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
689#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
690#define ECB_C17 (ECB_STDC_VERSION >= 201710L)
691
692#if ECB_CPP
693 #define ECB_EXTERN_C extern "C"
694 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
695 #define ECB_EXTERN_C_END }
696#else
697 #define ECB_EXTERN_C extern
698 #define ECB_EXTERN_C_BEG
699 #define ECB_EXTERN_C_END
700#endif
701
702/*****************************************************************************/
703
704/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
705/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
706
707#if ECB_NO_THREADS
708 #define ECB_NO_SMP 1
709#endif
710
711#if ECB_NO_SMP
712 #define ECB_MEMORY_FENCE do { } while (0)
713#endif
714
715/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
716#if __xlC__ && ECB_CPP
717 #include <builtins.h>
718#endif
719
720#if 1400 <= _MSC_VER
721 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
722#endif
723
724#ifndef ECB_MEMORY_FENCE
725 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
726 #define ECB_MEMORY_FENCE_RELAXED __asm__ __volatile__ ("" : : : "memory")
727 #if __i386 || __i386__
728 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
729 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
730 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
731 #elif ECB_GCC_AMD64
732 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
733 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
734 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
735 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
736 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
737 #elif defined __ARM_ARCH_2__ \
738 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
739 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
740 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
741 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
742 || defined __ARM_ARCH_5TEJ__
743 /* should not need any, unless running old code on newer cpu - arm doesn't support that */
744 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
745 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
746 || defined __ARM_ARCH_6T2__
747 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
748 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
749 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
750 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
751 #elif __aarch64__
752 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
753 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
754 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
755 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
756 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
757 #elif defined __s390__ || defined __s390x__
758 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
759 #elif defined __mips__
760 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
761 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
762 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
763 #elif defined __alpha__
764 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
765 #elif defined __hppa__
766 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
767 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
768 #elif defined __ia64__
769 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
770 #elif defined __m68k__
771 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
772 #elif defined __m88k__
773 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
774 #elif defined __sh__
775 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
776 #endif
777 #endif
778#endif
779
780#ifndef ECB_MEMORY_FENCE
781 #if ECB_GCC_VERSION(4,7)
782 /* see comment below (stdatomic.h) about the C11 memory model. */
783 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
784 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
785 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
786 #define ECB_MEMORY_FENCE_RELAXED __atomic_thread_fence (__ATOMIC_RELAXED)
787
788 #elif ECB_CLANG_EXTENSION(c_atomic)
789 /* see comment below (stdatomic.h) about the C11 memory model. */
790 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
791 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
792 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
793 #define ECB_MEMORY_FENCE_RELAXED __c11_atomic_thread_fence (__ATOMIC_RELAXED)
794
795 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
796 #define ECB_MEMORY_FENCE __sync_synchronize ()
797 #elif _MSC_VER >= 1500 /* VC++ 2008 */
798 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
799 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
800 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
801 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
802 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
803 #elif _MSC_VER >= 1400 /* VC++ 2005 */
804 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
805 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
806 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
807 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
808 #elif defined _WIN32
809 #include <WinNT.h>
810 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
811 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
812 #include <mbarrier.h>
813 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
814 #define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier ()
815 #define ECB_MEMORY_FENCE_RELEASE __machine_rel_barrier ()
816 #define ECB_MEMORY_FENCE_RELAXED __compiler_barrier ()
817 #elif __xlC__
818 #define ECB_MEMORY_FENCE __sync ()
819 #endif
820#endif
821
822#ifndef ECB_MEMORY_FENCE
823 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
824 /* we assume that these memory fences work on all variables/all memory accesses, */
825 /* not just C11 atomics and atomic accesses */
826 #include <stdatomic.h>
827 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
828 #define ECB_MEMORY_FENCE_ACQUIRE atomic_thread_fence (memory_order_acquire)
829 #define ECB_MEMORY_FENCE_RELEASE atomic_thread_fence (memory_order_release)
830 #endif
831#endif
832
833#ifndef ECB_MEMORY_FENCE
834 #if !ECB_AVOID_PTHREADS
835 /*
836 * if you get undefined symbol references to pthread_mutex_lock,
837 * or failure to find pthread.h, then you should implement
838 * the ECB_MEMORY_FENCE operations for your cpu/compiler
839 * OR provide pthread.h and link against the posix thread library
840 * of your system.
841 */
842 #include <pthread.h>
843 #define ECB_NEEDS_PTHREADS 1
844 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
845
846 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
847 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
848 #endif
849#endif
850
851#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
852 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
853#endif
854
855#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
856 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
857#endif
858
859#if !defined ECB_MEMORY_FENCE_RELAXED && defined ECB_MEMORY_FENCE
860 #define ECB_MEMORY_FENCE_RELAXED ECB_MEMORY_FENCE /* very heavy-handed */
861#endif
862
863/*****************************************************************************/
864
865#if ECB_CPP
866 #define ecb_inline static inline
867#elif ECB_GCC_VERSION(2,5)
868 #define ecb_inline static __inline__
869#elif ECB_C99
870 #define ecb_inline static inline
871#else
872 #define ecb_inline static
873#endif
874
875#if ECB_GCC_VERSION(3,3)
876 #define ecb_restrict __restrict__
877#elif ECB_C99
878 #define ecb_restrict restrict
879#else
880 #define ecb_restrict
881#endif
882
883typedef int ecb_bool;
884
885#define ECB_CONCAT_(a, b) a ## b
886#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
887#define ECB_STRINGIFY_(a) # a
888#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
889#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
890
891#define ecb_function_ ecb_inline
892
893#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
894 #define ecb_attribute(attrlist) __attribute__ (attrlist)
895#else
896 #define ecb_attribute(attrlist)
897#endif
898
899#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
900 #define ecb_is_constant(expr) __builtin_constant_p (expr)
901#else
902 /* possible C11 impl for integral types
903 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
904 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
905
906 #define ecb_is_constant(expr) 0
907#endif
908
909#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
910 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
911#else
912 #define ecb_expect(expr,value) (expr)
913#endif
914
915#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
916 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
917#else
918 #define ecb_prefetch(addr,rw,locality)
919#endif
920
921/* no emulation for ecb_decltype */
922#if ECB_CPP11
923 // older implementations might have problems with decltype(x)::type, work around it
924 template<class T> struct ecb_decltype_t { typedef T type; };
925 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
926#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
927 #define ecb_decltype(x) __typeof__ (x)
928#endif
929
930#if _MSC_VER >= 1300
931 #define ecb_deprecated __declspec (deprecated)
932#else
933 #define ecb_deprecated ecb_attribute ((__deprecated__))
934#endif
935
936#if _MSC_VER >= 1500
937 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
938#elif ECB_GCC_VERSION(4,5)
939 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
940#else
941 #define ecb_deprecated_message(msg) ecb_deprecated
942#endif
943
944#if _MSC_VER >= 1400
945 #define ecb_noinline __declspec (noinline)
946#else
947 #define ecb_noinline ecb_attribute ((__noinline__))
948#endif
949
950#define ecb_unused ecb_attribute ((__unused__))
951#define ecb_const ecb_attribute ((__const__))
952#define ecb_pure ecb_attribute ((__pure__))
953
954#if ECB_C11 || __IBMC_NORETURN
955 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
956 #define ecb_noreturn _Noreturn
957#elif ECB_CPP11
958 #define ecb_noreturn [[noreturn]]
959#elif _MSC_VER >= 1200
960 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
961 #define ecb_noreturn __declspec (noreturn)
962#else
963 #define ecb_noreturn ecb_attribute ((__noreturn__))
964#endif
965
966#if ECB_GCC_VERSION(4,3)
967 #define ecb_artificial ecb_attribute ((__artificial__))
968 #define ecb_hot ecb_attribute ((__hot__))
969 #define ecb_cold ecb_attribute ((__cold__))
970#else
971 #define ecb_artificial
972 #define ecb_hot
973 #define ecb_cold
974#endif
975
976/* put around conditional expressions if you are very sure that the */
977/* expression is mostly true or mostly false. note that these return */
978/* booleans, not the expression. */
979#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
980#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
981/* for compatibility to the rest of the world */
982#define ecb_likely(expr) ecb_expect_true (expr)
983#define ecb_unlikely(expr) ecb_expect_false (expr)
984
985/* count trailing zero bits and count # of one bits */
986#if ECB_GCC_VERSION(3,4) \
987 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
988 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
989 && ECB_CLANG_BUILTIN(__builtin_popcount))
990 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
991 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
992 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
993 #define ecb_ctz32(x) __builtin_ctz (x)
994 #define ecb_ctz64(x) __builtin_ctzll (x)
995 #define ecb_popcount32(x) __builtin_popcount (x)
996 /* no popcountll */
997#else
998 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
999 ecb_function_ ecb_const int
1000 ecb_ctz32 (uint32_t x)
1001 {
1002#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1003 unsigned long r;
1004 _BitScanForward (&r, x);
1005 return (int)r;
1006#else
1007 int r = 0;
1008
1009 x &= ~x + 1; /* this isolates the lowest bit */
1010
1011#if ECB_branchless_on_i386
1012 r += !!(x & 0xaaaaaaaa) << 0;
1013 r += !!(x & 0xcccccccc) << 1;
1014 r += !!(x & 0xf0f0f0f0) << 2;
1015 r += !!(x & 0xff00ff00) << 3;
1016 r += !!(x & 0xffff0000) << 4;
1017#else
1018 if (x & 0xaaaaaaaa) r += 1;
1019 if (x & 0xcccccccc) r += 2;
1020 if (x & 0xf0f0f0f0) r += 4;
1021 if (x & 0xff00ff00) r += 8;
1022 if (x & 0xffff0000) r += 16;
1023#endif
1024
1025 return r;
1026#endif
1027 }
1028
1029 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
1030 ecb_function_ ecb_const int
1031 ecb_ctz64 (uint64_t x)
1032 {
1033#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1034 unsigned long r;
1035 _BitScanForward64 (&r, x);
1036 return (int)r;
1037#else
1038 int shift = x & 0xffffffff ? 0 : 32;
1039 return ecb_ctz32 (x >> shift) + shift;
1040#endif
1041 }
1042
1043 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
1044 ecb_function_ ecb_const int
1045 ecb_popcount32 (uint32_t x)
1046 {
1047 x -= (x >> 1) & 0x55555555;
1048 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
1049 x = ((x >> 4) + x) & 0x0f0f0f0f;
1050 x *= 0x01010101;
1051
1052 return x >> 24;
1053 }
1054
1055 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
1056 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
1057 {
1058#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1059 unsigned long r;
1060 _BitScanReverse (&r, x);
1061 return (int)r;
1062#else
1063 int r = 0;
1064
1065 if (x >> 16) { x >>= 16; r += 16; }
1066 if (x >> 8) { x >>= 8; r += 8; }
1067 if (x >> 4) { x >>= 4; r += 4; }
1068 if (x >> 2) { x >>= 2; r += 2; }
1069 if (x >> 1) { r += 1; }
1070
1071 return r;
1072#endif
1073 }
1074
1075 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
1076 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
1077 {
1078#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1079 unsigned long r;
1080 _BitScanReverse64 (&r, x);
1081 return (int)r;
1082#else
1083 int r = 0;
1084
1085 if (x >> 32) { x >>= 32; r += 32; }
1086
1087 return r + ecb_ld32 (x);
1088#endif
1089 }
1090#endif
1091
1092ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
1093ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
1094ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
1095ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
1096
1097ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
1098ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
1099{
1100 return ( (x * 0x0802U & 0x22110U)
1101 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
1102}
1103
1104ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
1105ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
1106{
1107 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
1108 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
1109 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
1110 x = ( x >> 8 ) | ( x << 8);
1111
1112 return x;
1113}
1114
1115ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
1116ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
1117{
1118 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
1119 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
1120 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
1121 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
1122 x = ( x >> 16 ) | ( x << 16);
1123
1124 return x;
1125}
1126
1127/* popcount64 is only available on 64 bit cpus as gcc builtin */
1128/* so for this version we are lazy */
1129ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
1130ecb_function_ ecb_const int
1131ecb_popcount64 (uint64_t x)
1132{
1133 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
1134}
1135
1136ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
1137ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
1138ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
1139ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
1140ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
1141ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
1142ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
1143ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
1144
1145ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
1146ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
1147ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
1148ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
1149ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
1150ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
1151ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
1152ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
1153
1154#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1155 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1156 #define ecb_bswap16(x) __builtin_bswap16 (x)
1157 #else
1158 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1159 #endif
1160 #define ecb_bswap32(x) __builtin_bswap32 (x)
1161 #define ecb_bswap64(x) __builtin_bswap64 (x)
1162#elif _MSC_VER
1163 #include <stdlib.h>
1164 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1165 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1166 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
1167#else
1168 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
1169 ecb_function_ ecb_const uint16_t
1170 ecb_bswap16 (uint16_t x)
1171 {
1172 return ecb_rotl16 (x, 8);
1173 }
1174
1175 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
1176 ecb_function_ ecb_const uint32_t
1177 ecb_bswap32 (uint32_t x)
1178 {
1179 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
1180 }
1181
1182 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
1183 ecb_function_ ecb_const uint64_t
1184 ecb_bswap64 (uint64_t x)
1185 {
1186 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
1187 }
1188#endif
1189
1190#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
1191 #define ecb_unreachable() __builtin_unreachable ()
1192#else
1193 /* this seems to work fine, but gcc always emits a warning for it :/ */
1194 ecb_inline ecb_noreturn void ecb_unreachable (void);
1195 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
1196#endif
1197
1198/* try to tell the compiler that some condition is definitely true */
1199#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
1200
1201ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
1202ecb_inline ecb_const uint32_t
1203ecb_byteorder_helper (void)
1204{
1205 /* the union code still generates code under pressure in gcc, */
1206 /* but less than using pointers, and always seems to */
1207 /* successfully return a constant. */
1208 /* the reason why we have this horrible preprocessor mess */
1209 /* is to avoid it in all cases, at least on common architectures */
1210 /* or when using a recent enough gcc version (>= 4.6) */
1211#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1212 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1213 #define ECB_LITTLE_ENDIAN 1
1214 return 0x44332211;
1215#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1216 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1217 #define ECB_BIG_ENDIAN 1
1218 return 0x11223344;
1219#else
1220 union
1221 {
1222 uint8_t c[4];
1223 uint32_t u;
1224 } u = { 0x11, 0x22, 0x33, 0x44 };
1225 return u.u;
1226#endif
1227}
1228
1229ecb_inline ecb_const ecb_bool ecb_big_endian (void);
1230ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
1231ecb_inline ecb_const ecb_bool ecb_little_endian (void);
1232ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
1233
1234#if ECB_GCC_VERSION(3,0) || ECB_C99
1235 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1236#else
1237 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1238#endif
1239
1240#if ECB_CPP
1241 template<typename T>
1242 static inline T ecb_div_rd (T val, T div)
1243 {
1244 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1245 }
1246 template<typename T>
1247 static inline T ecb_div_ru (T val, T div)
1248 {
1249 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1250 }
1251#else
1252 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1253 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1254#endif
1255
1256#if ecb_cplusplus_does_not_suck
1257 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1258 template<typename T, int N>
1259 static inline int ecb_array_length (const T (&arr)[N])
1260 {
1261 return N;
1262 }
1263#else
1264 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1265#endif
1266
1267ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1268ecb_function_ ecb_const uint32_t
1269ecb_binary16_to_binary32 (uint32_t x)
1270{
1271 unsigned int s = (x & 0x8000) << (31 - 15);
1272 int e = (x >> 10) & 0x001f;
1273 unsigned int m = x & 0x03ff;
1274
1275 if (ecb_expect_false (e == 31))
1276 /* infinity or NaN */
1277 e = 255 - (127 - 15);
1278 else if (ecb_expect_false (!e))
1279 {
1280 if (ecb_expect_true (!m))
1281 /* zero, handled by code below by forcing e to 0 */
1282 e = 0 - (127 - 15);
1283 else
1284 {
1285 /* subnormal, renormalise */
1286 unsigned int s = 10 - ecb_ld32 (m);
1287
1288 m = (m << s) & 0x3ff; /* mask implicit bit */
1289 e -= s - 1;
1290 }
1291 }
1292
1293 /* e and m now are normalised, or zero, (or inf or nan) */
1294 e += 127 - 15;
1295
1296 return s | (e << 23) | (m << (23 - 10));
1297}
1298
1299ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1300ecb_function_ ecb_const uint16_t
1301ecb_binary32_to_binary16 (uint32_t x)
1302{
1303 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1304 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1305 unsigned int m = x & 0x007fffff;
1306
1307 x &= 0x7fffffff;
1308
1309 /* if it's within range of binary16 normals, use fast path */
1310 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1311 {
1312 /* mantissa round-to-even */
1313 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1314
1315 /* handle overflow */
1316 if (ecb_expect_false (m >= 0x00800000))
1317 {
1318 m >>= 1;
1319 e += 1;
1320 }
1321
1322 return s | (e << 10) | (m >> (23 - 10));
1323 }
1324
1325 /* handle large numbers and infinity */
1326 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1327 return s | 0x7c00;
1328
1329 /* handle zero, subnormals and small numbers */
1330 if (ecb_expect_true (x < 0x38800000))
1331 {
1332 /* zero */
1333 if (ecb_expect_true (!x))
1334 return s;
1335
1336 /* handle subnormals */
1337
1338 /* too small, will be zero */
1339 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1340 return s;
1341
1342 m |= 0x00800000; /* make implicit bit explicit */
1343
1344 /* very tricky - we need to round to the nearest e (+10) bit value */
1345 {
1346 unsigned int bits = 14 - e;
1347 unsigned int half = (1 << (bits - 1)) - 1;
1348 unsigned int even = (m >> bits) & 1;
1349
1350 /* if this overflows, we will end up with a normalised number */
1351 m = (m + half + even) >> bits;
1352 }
1353
1354 return s | m;
1355 }
1356
1357 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1358 m >>= 13;
1359
1360 return s | 0x7c00 | m | !m;
1361}
1362
1363/*******************************************************************************/
1364/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1365
1366/* basically, everything uses "ieee pure-endian" floating point numbers */
1367/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1368#if 0 \
1369 || __i386 || __i386__ \
1370 || ECB_GCC_AMD64 \
1371 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1372 || defined __s390__ || defined __s390x__ \
1373 || defined __mips__ \
1374 || defined __alpha__ \
1375 || defined __hppa__ \
1376 || defined __ia64__ \
1377 || defined __m68k__ \
1378 || defined __m88k__ \
1379 || defined __sh__ \
1380 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1381 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1382 || defined __aarch64__
1383 #define ECB_STDFP 1
1384 #include <string.h> /* for memcpy */
1385#else
1386 #define ECB_STDFP 0
1387#endif
1388
1389#ifndef ECB_NO_LIBM
1390
1391 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1392
1393 /* only the oldest of old doesn't have this one. solaris. */
1394 #ifdef INFINITY
1395 #define ECB_INFINITY INFINITY
1396 #else
1397 #define ECB_INFINITY HUGE_VAL
1398 #endif
1399
1400 #ifdef NAN
1401 #define ECB_NAN NAN
1402 #else
1403 #define ECB_NAN ECB_INFINITY
1404 #endif
1405
1406 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1407 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1408 #define ecb_frexpf(x,e) frexpf ((x), (e))
1409 #else
1410 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1411 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1412 #endif
1413
1414 /* convert a float to ieee single/binary32 */
1415 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1416 ecb_function_ ecb_const uint32_t
1417 ecb_float_to_binary32 (float x)
1418 {
1419 uint32_t r;
1420
1421 #if ECB_STDFP
1422 memcpy (&r, &x, 4);
1423 #else
1424 /* slow emulation, works for anything but -0 */
1425 uint32_t m;
1426 int e;
1427
1428 if (x == 0e0f ) return 0x00000000U;
1429 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1430 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1431 if (x != x ) return 0x7fbfffffU;
1432
1433 m = ecb_frexpf (x, &e) * 0x1000000U;
1434
1435 r = m & 0x80000000U;
1436
1437 if (r)
1438 m = -m;
1439
1440 if (e <= -126)
1441 {
1442 m &= 0xffffffU;
1443 m >>= (-125 - e);
1444 e = -126;
1445 }
1446
1447 r |= (e + 126) << 23;
1448 r |= m & 0x7fffffU;
1449 #endif
1450
1451 return r;
1452 }
1453
1454 /* converts an ieee single/binary32 to a float */
1455 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1456 ecb_function_ ecb_const float
1457 ecb_binary32_to_float (uint32_t x)
1458 {
1459 float r;
1460
1461 #if ECB_STDFP
1462 memcpy (&r, &x, 4);
1463 #else
1464 /* emulation, only works for normals and subnormals and +0 */
1465 int neg = x >> 31;
1466 int e = (x >> 23) & 0xffU;
1467
1468 x &= 0x7fffffU;
1469
1470 if (e)
1471 x |= 0x800000U;
1472 else
1473 e = 1;
1474
1475 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1476 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1477
1478 r = neg ? -r : r;
1479 #endif
1480
1481 return r;
1482 }
1483
1484 /* convert a double to ieee double/binary64 */
1485 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1486 ecb_function_ ecb_const uint64_t
1487 ecb_double_to_binary64 (double x)
1488 {
1489 uint64_t r;
1490
1491 #if ECB_STDFP
1492 memcpy (&r, &x, 8);
1493 #else
1494 /* slow emulation, works for anything but -0 */
1495 uint64_t m;
1496 int e;
1497
1498 if (x == 0e0 ) return 0x0000000000000000U;
1499 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1500 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1501 if (x != x ) return 0X7ff7ffffffffffffU;
1502
1503 m = frexp (x, &e) * 0x20000000000000U;
1504
1505 r = m & 0x8000000000000000;;
1506
1507 if (r)
1508 m = -m;
1509
1510 if (e <= -1022)
1511 {
1512 m &= 0x1fffffffffffffU;
1513 m >>= (-1021 - e);
1514 e = -1022;
1515 }
1516
1517 r |= ((uint64_t)(e + 1022)) << 52;
1518 r |= m & 0xfffffffffffffU;
1519 #endif
1520
1521 return r;
1522 }
1523
1524 /* converts an ieee double/binary64 to a double */
1525 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1526 ecb_function_ ecb_const double
1527 ecb_binary64_to_double (uint64_t x)
1528 {
1529 double r;
1530
1531 #if ECB_STDFP
1532 memcpy (&r, &x, 8);
1533 #else
1534 /* emulation, only works for normals and subnormals and +0 */
1535 int neg = x >> 63;
1536 int e = (x >> 52) & 0x7ffU;
1537
1538 x &= 0xfffffffffffffU;
1539
1540 if (e)
1541 x |= 0x10000000000000U;
1542 else
1543 e = 1;
1544
1545 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1546 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1547
1548 r = neg ? -r : r;
1549 #endif
1550
1551 return r;
1552 }
1553
1554 /* convert a float to ieee half/binary16 */
1555 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1556 ecb_function_ ecb_const uint16_t
1557 ecb_float_to_binary16 (float x)
1558 {
1559 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1560 }
1561
1562 /* convert an ieee half/binary16 to float */
1563 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1564 ecb_function_ ecb_const float
1565 ecb_binary16_to_float (uint16_t x)
1566 {
1567 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1568 }
1569
1570#endif
1571
1572#endif
1573
1574/* ECB.H END */
1575
1576#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1577/* if your architecture doesn't need memory fences, e.g. because it is
1578 * single-cpu/core, or if you use libev in a project that doesn't use libev
1579 * from multiple threads, then you can define ECB_NO_THREADS when compiling
1580 * libev, in which cases the memory fences become nops.
1581 * alternatively, you can remove this #error and link against libpthread,
1582 * which will then provide the memory fences.
1583 */
1584# error "memory fences not defined for your architecture, please report"
1585#endif
1586
1587#ifndef ECB_MEMORY_FENCE
1588# define ECB_MEMORY_FENCE do { } while (0)
1589# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1590# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1591#endif
1592
1593#define inline_size ecb_inline
1594
1595#if EV_FEATURE_CODE
482# define inline_speed static inline 1596# define inline_speed ecb_inline
1597#else
1598# define inline_speed ecb_noinline static
483#endif 1599#endif
1600
1601/*****************************************************************************/
1602/* raw syscall wrappers */
1603
1604#if EV_NEED_SYSCALL
1605
1606#include <sys/syscall.h>
1607
1608/*
1609 * define some syscall wrappers for common architectures
1610 * this is mostly for nice looks during debugging, not performance.
1611 * our syscalls return < 0, not == -1, on error. which is good
1612 * enough for linux aio.
1613 * TODO: arm is also common nowadays, maybe even mips and x86
1614 * TODO: after implementing this, it suddenly looks like overkill, but its hard to remove...
1615 */
1616#if __GNUC__ && __linux && ECB_AMD64 && !defined __OPTIMIZE_SIZE__
1617 /* the costly errno access probably kills this for size optimisation */
1618
1619 #define ev_syscall(nr,narg,arg1,arg2,arg3,arg4,arg5,arg6) \
1620 ({ \
1621 long res; \
1622 register unsigned long r6 __asm__ ("r9" ); \
1623 register unsigned long r5 __asm__ ("r8" ); \
1624 register unsigned long r4 __asm__ ("r10"); \
1625 register unsigned long r3 __asm__ ("rdx"); \
1626 register unsigned long r2 __asm__ ("rsi"); \
1627 register unsigned long r1 __asm__ ("rdi"); \
1628 if (narg >= 6) r6 = (unsigned long)(arg6); \
1629 if (narg >= 5) r5 = (unsigned long)(arg5); \
1630 if (narg >= 4) r4 = (unsigned long)(arg4); \
1631 if (narg >= 3) r3 = (unsigned long)(arg3); \
1632 if (narg >= 2) r2 = (unsigned long)(arg2); \
1633 if (narg >= 1) r1 = (unsigned long)(arg1); \
1634 __asm__ __volatile__ ( \
1635 "syscall\n\t" \
1636 : "=a" (res) \
1637 : "0" (nr), "r" (r1), "r" (r2), "r" (r3), "r" (r4), "r" (r5) \
1638 : "cc", "r11", "cx", "memory"); \
1639 errno = -res; \
1640 res; \
1641 })
1642
1643#endif
1644
1645#ifdef ev_syscall
1646 #define ev_syscall0(nr) ev_syscall (nr, 0, 0, 0, 0, 0, 0, 0)
1647 #define ev_syscall1(nr,arg1) ev_syscall (nr, 1, arg1, 0, 0, 0, 0, 0)
1648 #define ev_syscall2(nr,arg1,arg2) ev_syscall (nr, 2, arg1, arg2, 0, 0, 0, 0)
1649 #define ev_syscall3(nr,arg1,arg2,arg3) ev_syscall (nr, 3, arg1, arg2, arg3, 0, 0, 0)
1650 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) ev_syscall (nr, 3, arg1, arg2, arg3, arg4, 0, 0)
1651 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) ev_syscall (nr, 5, arg1, arg2, arg3, arg4, arg5, 0)
1652 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) ev_syscall (nr, 6, arg1, arg2, arg3, arg4, arg5,arg6)
1653#else
1654 #define ev_syscall0(nr) syscall (nr)
1655 #define ev_syscall1(nr,arg1) syscall (nr, arg1)
1656 #define ev_syscall2(nr,arg1,arg2) syscall (nr, arg1, arg2)
1657 #define ev_syscall3(nr,arg1,arg2,arg3) syscall (nr, arg1, arg2, arg3)
1658 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) syscall (nr, arg1, arg2, arg3, arg4)
1659 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) syscall (nr, arg1, arg2, arg3, arg4, arg5)
1660 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) syscall (nr, arg1, arg2, arg3, arg4, arg5,arg6)
1661#endif
1662
1663#endif
1664
1665/*****************************************************************************/
484 1666
485#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1667#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
486 1668
487#if EV_MINPRI == EV_MAXPRI 1669#if EV_MINPRI == EV_MAXPRI
488# define ABSPRI(w) (((W)w), 0) 1670# define ABSPRI(w) (((W)w), 0)
489#else 1671#else
490# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1672# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
491#endif 1673#endif
492 1674
493#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1675#define EMPTY /* required for microsofts broken pseudo-c compiler */
494#define EMPTY2(a,b) /* used to suppress some warnings */
495 1676
496typedef ev_watcher *W; 1677typedef ev_watcher *W;
497typedef ev_watcher_list *WL; 1678typedef ev_watcher_list *WL;
498typedef ev_watcher_time *WT; 1679typedef ev_watcher_time *WT;
499 1680
500#define ev_active(w) ((W)(w))->active 1681#define ev_active(w) ((W)(w))->active
501#define ev_at(w) ((WT)(w))->at 1682#define ev_at(w) ((WT)(w))->at
502 1683
503#if EV_USE_REALTIME 1684#if EV_USE_REALTIME
504/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 1685/* sig_atomic_t is used to avoid per-thread variables or locking but still */
505/* giving it a reasonably high chance of working on typical architetcures */ 1686/* giving it a reasonably high chance of working on typical architectures */
506static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 1687static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
507#endif 1688#endif
508 1689
509#if EV_USE_MONOTONIC 1690#if EV_USE_MONOTONIC
510static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 1691static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
… …
524# include "ev_win32.c" 1705# include "ev_win32.c"
525#endif 1706#endif
526 1707
527/*****************************************************************************/ 1708/*****************************************************************************/
528 1709
1710#if EV_USE_LINUXAIO
1711# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
1712#endif
1713
1714/* define a suitable floor function (only used by periodics atm) */
1715
1716#if EV_USE_FLOOR
1717# include <math.h>
1718# define ev_floor(v) floor (v)
1719#else
1720
1721#include <float.h>
1722
1723/* a floor() replacement function, should be independent of ev_tstamp type */
1724ecb_noinline
1725static ev_tstamp
1726ev_floor (ev_tstamp v)
1727{
1728 /* the choice of shift factor is not terribly important */
1729#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1730 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1731#else
1732 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1733#endif
1734
1735 /* special treatment for negative arguments */
1736 if (ecb_expect_false (v < 0.))
1737 {
1738 ev_tstamp f = -ev_floor (-v);
1739
1740 return f - (f == v ? 0 : 1);
1741 }
1742
1743 /* argument too large for an unsigned long? then reduce it */
1744 if (ecb_expect_false (v >= shift))
1745 {
1746 ev_tstamp f;
1747
1748 if (v == v - 1.)
1749 return v; /* very large numbers are assumed to be integer */
1750
1751 f = shift * ev_floor (v * (1. / shift));
1752 return f + ev_floor (v - f);
1753 }
1754
1755 /* fits into an unsigned long */
1756 return (unsigned long)v;
1757}
1758
1759#endif
1760
1761/*****************************************************************************/
1762
1763#ifdef __linux
1764# include <sys/utsname.h>
1765#endif
1766
1767ecb_noinline ecb_cold
1768static unsigned int
1769ev_linux_version (void)
1770{
1771#ifdef __linux
1772 unsigned int v = 0;
1773 struct utsname buf;
1774 int i;
1775 char *p = buf.release;
1776
1777 if (uname (&buf))
1778 return 0;
1779
1780 for (i = 3+1; --i; )
1781 {
1782 unsigned int c = 0;
1783
1784 for (;;)
1785 {
1786 if (*p >= '0' && *p <= '9')
1787 c = c * 10 + *p++ - '0';
1788 else
1789 {
1790 p += *p == '.';
1791 break;
1792 }
1793 }
1794
1795 v = (v << 8) | c;
1796 }
1797
1798 return v;
1799#else
1800 return 0;
1801#endif
1802}
1803
1804/*****************************************************************************/
1805
1806#if EV_AVOID_STDIO
1807ecb_noinline ecb_cold
1808static void
1809ev_printerr (const char *msg)
1810{
1811 write (STDERR_FILENO, msg, strlen (msg));
1812}
1813#endif
1814
529static void (*syserr_cb)(const char *msg); 1815static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
530 1816
1817ecb_cold
531void 1818void
532ev_set_syserr_cb (void (*cb)(const char *msg)) 1819ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
533{ 1820{
534 syserr_cb = cb; 1821 syserr_cb = cb;
535} 1822}
536 1823
537static void noinline 1824ecb_noinline ecb_cold
1825static void
538ev_syserr (const char *msg) 1826ev_syserr (const char *msg)
539{ 1827{
540 if (!msg) 1828 if (!msg)
541 msg = "(libev) system error"; 1829 msg = "(libev) system error";
542 1830
543 if (syserr_cb) 1831 if (syserr_cb)
544 syserr_cb (msg); 1832 syserr_cb (msg);
545 else 1833 else
546 { 1834 {
547#if EV_AVOID_STDIO 1835#if EV_AVOID_STDIO
548 write (STDERR_FILENO, msg, strlen (msg)); 1836 ev_printerr (msg);
549 write (STDERR_FILENO, ": ", 2); 1837 ev_printerr (": ");
550 msg = strerror (errno); 1838 ev_printerr (strerror (errno));
551 write (STDERR_FILENO, msg, strlen (msg)); 1839 ev_printerr ("\n");
552 write (STDERR_FILENO, "\n", 1);
553#else 1840#else
554 perror (msg); 1841 perror (msg);
555#endif 1842#endif
556 abort (); 1843 abort ();
557 } 1844 }
558} 1845}
559 1846
560static void * 1847static void *
561ev_realloc_emul (void *ptr, long size) 1848ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
562{ 1849{
563 /* some systems, notably openbsd and darwin, fail to properly 1850 /* some systems, notably openbsd and darwin, fail to properly
564 * implement realloc (x, 0) (as required by both ansi c-98 and 1851 * implement realloc (x, 0) (as required by both ansi c-89 and
565 * the single unix specification, so work around them here. 1852 * the single unix specification, so work around them here.
1853 * recently, also (at least) fedora and debian started breaking it,
1854 * despite documenting it otherwise.
566 */ 1855 */
567 1856
568 if (size) 1857 if (size)
569 return realloc (ptr, size); 1858 return realloc (ptr, size);
570 1859
571 free (ptr); 1860 free (ptr);
572 return 0; 1861 return 0;
573} 1862}
574 1863
575static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1864static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
576 1865
1866ecb_cold
577void 1867void
578ev_set_allocator (void *(*cb)(void *ptr, long size)) 1868ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
579{ 1869{
580 alloc = cb; 1870 alloc = cb;
581} 1871}
582 1872
583inline_speed void * 1873inline_speed void *
… …
586 ptr = alloc (ptr, size); 1876 ptr = alloc (ptr, size);
587 1877
588 if (!ptr && size) 1878 if (!ptr && size)
589 { 1879 {
590#if EV_AVOID_STDIO 1880#if EV_AVOID_STDIO
591 write (STDERR_FILENO, "libev: memory allocation failed, aborting.", 1881 ev_printerr ("(libev) memory allocation failed, aborting.\n");
592 sizeof ("libev: memory allocation failed, aborting.") - 1);
593#else 1882#else
594 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1883 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
595#endif 1884#endif
596 abort (); 1885 abort ();
597 } 1886 }
598 1887
599 return ptr; 1888 return ptr;
… …
611typedef struct 1900typedef struct
612{ 1901{
613 WL head; 1902 WL head;
614 unsigned char events; /* the events watched for */ 1903 unsigned char events; /* the events watched for */
615 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */ 1904 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
616 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1905 unsigned char emask; /* some backends store the actual kernel mask in here */
617 unsigned char unused; 1906 unsigned char eflags; /* flags field for use by backends */
618#if EV_USE_EPOLL 1907#if EV_USE_EPOLL
619 unsigned int egen; /* generation counter to counter epoll bugs */ 1908 unsigned int egen; /* generation counter to counter epoll bugs */
620#endif 1909#endif
621#if EV_SELECT_IS_WINSOCKET 1910#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
622 SOCKET handle; 1911 SOCKET handle;
1912#endif
1913#if EV_USE_IOCP
1914 OVERLAPPED or, ow;
623#endif 1915#endif
624} ANFD; 1916} ANFD;
625 1917
626/* stores the pending event set for a given watcher */ 1918/* stores the pending event set for a given watcher */
627typedef struct 1919typedef struct
… …
669 #undef VAR 1961 #undef VAR
670 }; 1962 };
671 #include "ev_wrap.h" 1963 #include "ev_wrap.h"
672 1964
673 static struct ev_loop default_loop_struct; 1965 static struct ev_loop default_loop_struct;
674 struct ev_loop *ev_default_loop_ptr; 1966 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
675 1967
676#else 1968#else
677 1969
678 ev_tstamp ev_rt_now; 1970 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
679 #define VAR(name,decl) static decl; 1971 #define VAR(name,decl) static decl;
680 #include "ev_vars.h" 1972 #include "ev_vars.h"
681 #undef VAR 1973 #undef VAR
682 1974
683 static int ev_default_loop_ptr; 1975 static int ev_default_loop_ptr;
684 1976
685#endif 1977#endif
686 1978
687#if EV_MINIMAL < 2 1979#if EV_FEATURE_API
688# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 1980# define EV_RELEASE_CB if (ecb_expect_false (release_cb)) release_cb (EV_A)
689# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 1981# define EV_ACQUIRE_CB if (ecb_expect_false (acquire_cb)) acquire_cb (EV_A)
690# define EV_INVOKE_PENDING invoke_cb (EV_A) 1982# define EV_INVOKE_PENDING invoke_cb (EV_A)
691#else 1983#else
692# define EV_RELEASE_CB (void)0 1984# define EV_RELEASE_CB (void)0
693# define EV_ACQUIRE_CB (void)0 1985# define EV_ACQUIRE_CB (void)0
694# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1986# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
695#endif 1987#endif
696 1988
697#define EVUNLOOP_RECURSE 0x80 1989#define EVBREAK_RECURSE 0x80
698 1990
699/*****************************************************************************/ 1991/*****************************************************************************/
700 1992
701#ifndef EV_HAVE_EV_TIME 1993#ifndef EV_HAVE_EV_TIME
702ev_tstamp 1994ev_tstamp
703ev_time (void) 1995ev_time (void) EV_NOEXCEPT
704{ 1996{
705#if EV_USE_REALTIME 1997#if EV_USE_REALTIME
706 if (expect_true (have_realtime)) 1998 if (ecb_expect_true (have_realtime))
707 { 1999 {
708 struct timespec ts; 2000 struct timespec ts;
709 clock_gettime (CLOCK_REALTIME, &ts); 2001 clock_gettime (CLOCK_REALTIME, &ts);
710 return ts.tv_sec + ts.tv_nsec * 1e-9; 2002 return EV_TS_GET (ts);
711 } 2003 }
712#endif 2004#endif
713 2005
714 struct timeval tv; 2006 struct timeval tv;
715 gettimeofday (&tv, 0); 2007 gettimeofday (&tv, 0);
716 return tv.tv_sec + tv.tv_usec * 1e-6; 2008 return EV_TV_GET (tv);
717} 2009}
718#endif 2010#endif
719 2011
720inline_size ev_tstamp 2012inline_size ev_tstamp
721get_clock (void) 2013get_clock (void)
722{ 2014{
723#if EV_USE_MONOTONIC 2015#if EV_USE_MONOTONIC
724 if (expect_true (have_monotonic)) 2016 if (ecb_expect_true (have_monotonic))
725 { 2017 {
726 struct timespec ts; 2018 struct timespec ts;
727 clock_gettime (CLOCK_MONOTONIC, &ts); 2019 clock_gettime (CLOCK_MONOTONIC, &ts);
728 return ts.tv_sec + ts.tv_nsec * 1e-9; 2020 return EV_TS_GET (ts);
729 } 2021 }
730#endif 2022#endif
731 2023
732 return ev_time (); 2024 return ev_time ();
733} 2025}
734 2026
735#if EV_MULTIPLICITY 2027#if EV_MULTIPLICITY
736ev_tstamp 2028ev_tstamp
737ev_now (EV_P) 2029ev_now (EV_P) EV_NOEXCEPT
738{ 2030{
739 return ev_rt_now; 2031 return ev_rt_now;
740} 2032}
741#endif 2033#endif
742 2034
743void 2035void
744ev_sleep (ev_tstamp delay) 2036ev_sleep (ev_tstamp delay) EV_NOEXCEPT
745{ 2037{
746 if (delay > 0.) 2038 if (delay > 0.)
747 { 2039 {
748#if EV_USE_NANOSLEEP 2040#if EV_USE_NANOSLEEP
749 struct timespec ts; 2041 struct timespec ts;
750 2042
751 ts.tv_sec = (time_t)delay; 2043 EV_TS_SET (ts, delay);
752 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
753
754 nanosleep (&ts, 0); 2044 nanosleep (&ts, 0);
755#elif defined(_WIN32) 2045#elif defined _WIN32
2046 /* maybe this should round up, as ms is very low resolution */
2047 /* compared to select (µs) or nanosleep (ns) */
756 Sleep ((unsigned long)(delay * 1e3)); 2048 Sleep ((unsigned long)(EV_TS_TO_MS (delay)));
757#else 2049#else
758 struct timeval tv; 2050 struct timeval tv;
759
760 tv.tv_sec = (time_t)delay;
761 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
762 2051
763 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 2052 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
764 /* something not guaranteed by newer posix versions, but guaranteed */ 2053 /* something not guaranteed by newer posix versions, but guaranteed */
765 /* by older ones */ 2054 /* by older ones */
2055 EV_TV_SET (tv, delay);
766 select (0, 0, 0, 0, &tv); 2056 select (0, 0, 0, 0, &tv);
767#endif 2057#endif
768 } 2058 }
769} 2059}
770 2060
771/*****************************************************************************/ 2061/*****************************************************************************/
772 2062
773#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 2063#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
774 2064
775/* find a suitable new size for the given array, */ 2065/* find a suitable new size for the given array, */
776/* hopefully by rounding to a ncie-to-malloc size */ 2066/* hopefully by rounding to a nice-to-malloc size */
777inline_size int 2067inline_size int
778array_nextsize (int elem, int cur, int cnt) 2068array_nextsize (int elem, int cur, int cnt)
779{ 2069{
780 int ncur = cur + 1; 2070 int ncur = cur + 1;
781 2071
782 do 2072 do
783 ncur <<= 1; 2073 ncur <<= 1;
784 while (cnt > ncur); 2074 while (cnt > ncur);
785 2075
786 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 2076 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
787 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 2077 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
788 { 2078 {
789 ncur *= elem; 2079 ncur *= elem;
790 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 2080 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
791 ncur = ncur - sizeof (void *) * 4; 2081 ncur = ncur - sizeof (void *) * 4;
… …
793 } 2083 }
794 2084
795 return ncur; 2085 return ncur;
796} 2086}
797 2087
798static noinline void * 2088ecb_noinline ecb_cold
2089static void *
799array_realloc (int elem, void *base, int *cur, int cnt) 2090array_realloc (int elem, void *base, int *cur, int cnt)
800{ 2091{
801 *cur = array_nextsize (elem, *cur, cnt); 2092 *cur = array_nextsize (elem, *cur, cnt);
802 return ev_realloc (base, elem * *cur); 2093 return ev_realloc (base, elem * *cur);
803} 2094}
804 2095
2096#define array_needsize_noinit(base,offset,count)
2097
805#define array_init_zero(base,count) \ 2098#define array_needsize_zerofill(base,offset,count) \
806 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 2099 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
807 2100
808#define array_needsize(type,base,cur,cnt,init) \ 2101#define array_needsize(type,base,cur,cnt,init) \
809 if (expect_false ((cnt) > (cur))) \ 2102 if (ecb_expect_false ((cnt) > (cur))) \
810 { \ 2103 { \
811 int ocur_ = (cur); \ 2104 ecb_unused int ocur_ = (cur); \
812 (base) = (type *)array_realloc \ 2105 (base) = (type *)array_realloc \
813 (sizeof (type), (base), &(cur), (cnt)); \ 2106 (sizeof (type), (base), &(cur), (cnt)); \
814 init ((base) + (ocur_), (cur) - ocur_); \ 2107 init ((base), ocur_, ((cur) - ocur_)); \
815 } 2108 }
816 2109
817#if 0 2110#if 0
818#define array_slim(type,stem) \ 2111#define array_slim(type,stem) \
819 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2112 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
… …
828 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 2121 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
829 2122
830/*****************************************************************************/ 2123/*****************************************************************************/
831 2124
832/* dummy callback for pending events */ 2125/* dummy callback for pending events */
833static void noinline 2126ecb_noinline
2127static void
834pendingcb (EV_P_ ev_prepare *w, int revents) 2128pendingcb (EV_P_ ev_prepare *w, int revents)
835{ 2129{
836} 2130}
837 2131
838void noinline 2132ecb_noinline
2133void
839ev_feed_event (EV_P_ void *w, int revents) 2134ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
840{ 2135{
841 W w_ = (W)w; 2136 W w_ = (W)w;
842 int pri = ABSPRI (w_); 2137 int pri = ABSPRI (w_);
843 2138
844 if (expect_false (w_->pending)) 2139 if (ecb_expect_false (w_->pending))
845 pendings [pri][w_->pending - 1].events |= revents; 2140 pendings [pri][w_->pending - 1].events |= revents;
846 else 2141 else
847 { 2142 {
848 w_->pending = ++pendingcnt [pri]; 2143 w_->pending = ++pendingcnt [pri];
849 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2144 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
850 pendings [pri][w_->pending - 1].w = w_; 2145 pendings [pri][w_->pending - 1].w = w_;
851 pendings [pri][w_->pending - 1].events = revents; 2146 pendings [pri][w_->pending - 1].events = revents;
852 } 2147 }
2148
2149 pendingpri = NUMPRI - 1;
853} 2150}
854 2151
855inline_speed void 2152inline_speed void
856feed_reverse (EV_P_ W w) 2153feed_reverse (EV_P_ W w)
857{ 2154{
858 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2155 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
859 rfeeds [rfeedcnt++] = w; 2156 rfeeds [rfeedcnt++] = w;
860} 2157}
861 2158
862inline_size void 2159inline_size void
863feed_reverse_done (EV_P_ int revents) 2160feed_reverse_done (EV_P_ int revents)
… …
877} 2174}
878 2175
879/*****************************************************************************/ 2176/*****************************************************************************/
880 2177
881inline_speed void 2178inline_speed void
882fd_event_nc (EV_P_ int fd, int revents) 2179fd_event_nocheck (EV_P_ int fd, int revents)
883{ 2180{
884 ANFD *anfd = anfds + fd; 2181 ANFD *anfd = anfds + fd;
885 ev_io *w; 2182 ev_io *w;
886 2183
887 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2184 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
898inline_speed void 2195inline_speed void
899fd_event (EV_P_ int fd, int revents) 2196fd_event (EV_P_ int fd, int revents)
900{ 2197{
901 ANFD *anfd = anfds + fd; 2198 ANFD *anfd = anfds + fd;
902 2199
903 if (expect_true (!anfd->reify)) 2200 if (ecb_expect_true (!anfd->reify))
904 fd_event_nc (EV_A_ fd, revents); 2201 fd_event_nocheck (EV_A_ fd, revents);
905} 2202}
906 2203
907void 2204void
908ev_feed_fd_event (EV_P_ int fd, int revents) 2205ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
909{ 2206{
910 if (fd >= 0 && fd < anfdmax) 2207 if (fd >= 0 && fd < anfdmax)
911 fd_event_nc (EV_A_ fd, revents); 2208 fd_event_nocheck (EV_A_ fd, revents);
912} 2209}
913 2210
914/* make sure the external fd watch events are in-sync */ 2211/* make sure the external fd watch events are in-sync */
915/* with the kernel/libev internal state */ 2212/* with the kernel/libev internal state */
916inline_size void 2213inline_size void
917fd_reify (EV_P) 2214fd_reify (EV_P)
918{ 2215{
919 int i; 2216 int i;
920 2217
2218#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
2219 for (i = 0; i < fdchangecnt; ++i)
2220 {
2221 int fd = fdchanges [i];
2222 ANFD *anfd = anfds + fd;
2223
2224 if (anfd->reify & EV__IOFDSET && anfd->head)
2225 {
2226 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
2227
2228 if (handle != anfd->handle)
2229 {
2230 unsigned long arg;
2231
2232 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
2233
2234 /* handle changed, but fd didn't - we need to do it in two steps */
2235 backend_modify (EV_A_ fd, anfd->events, 0);
2236 anfd->events = 0;
2237 anfd->handle = handle;
2238 }
2239 }
2240 }
2241#endif
2242
921 for (i = 0; i < fdchangecnt; ++i) 2243 for (i = 0; i < fdchangecnt; ++i)
922 { 2244 {
923 int fd = fdchanges [i]; 2245 int fd = fdchanges [i];
924 ANFD *anfd = anfds + fd; 2246 ANFD *anfd = anfds + fd;
925 ev_io *w; 2247 ev_io *w;
926 2248
927 unsigned char events = 0; 2249 unsigned char o_events = anfd->events;
2250 unsigned char o_reify = anfd->reify;
928 2251
929 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2252 anfd->reify = 0;
930 events |= (unsigned char)w->events;
931 2253
932#if EV_SELECT_IS_WINSOCKET 2254 /*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
933 if (events)
934 { 2255 {
935 unsigned long arg; 2256 anfd->events = 0;
936 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 2257
937 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 2258 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
2259 anfd->events |= (unsigned char)w->events;
2260
2261 if (o_events != anfd->events)
2262 o_reify = EV__IOFDSET; /* actually |= */
938 } 2263 }
939#endif
940 2264
941 { 2265 if (o_reify & EV__IOFDSET)
942 unsigned char o_events = anfd->events;
943 unsigned char o_reify = anfd->reify;
944
945 anfd->reify = 0;
946 anfd->events = events;
947
948 if (o_events != events || o_reify & EV__IOFDSET)
949 backend_modify (EV_A_ fd, o_events, events); 2266 backend_modify (EV_A_ fd, o_events, anfd->events);
950 }
951 } 2267 }
952 2268
953 fdchangecnt = 0; 2269 fdchangecnt = 0;
954} 2270}
955 2271
956/* something about the given fd changed */ 2272/* something about the given fd changed */
957inline_size void 2273inline_size
2274void
958fd_change (EV_P_ int fd, int flags) 2275fd_change (EV_P_ int fd, int flags)
959{ 2276{
960 unsigned char reify = anfds [fd].reify; 2277 unsigned char reify = anfds [fd].reify;
961 anfds [fd].reify |= flags; 2278 anfds [fd].reify |= flags;
962 2279
963 if (expect_true (!reify)) 2280 if (ecb_expect_true (!reify))
964 { 2281 {
965 ++fdchangecnt; 2282 ++fdchangecnt;
966 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2283 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
967 fdchanges [fdchangecnt - 1] = fd; 2284 fdchanges [fdchangecnt - 1] = fd;
968 } 2285 }
969} 2286}
970 2287
971/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2288/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
972inline_speed void 2289inline_speed ecb_cold void
973fd_kill (EV_P_ int fd) 2290fd_kill (EV_P_ int fd)
974{ 2291{
975 ev_io *w; 2292 ev_io *w;
976 2293
977 while ((w = (ev_io *)anfds [fd].head)) 2294 while ((w = (ev_io *)anfds [fd].head))
… …
979 ev_io_stop (EV_A_ w); 2296 ev_io_stop (EV_A_ w);
980 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2297 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
981 } 2298 }
982} 2299}
983 2300
984/* check whether the given fd is atcually valid, for error recovery */ 2301/* check whether the given fd is actually valid, for error recovery */
985inline_size int 2302inline_size ecb_cold int
986fd_valid (int fd) 2303fd_valid (int fd)
987{ 2304{
988#ifdef _WIN32 2305#ifdef _WIN32
989 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2306 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
990#else 2307#else
991 return fcntl (fd, F_GETFD) != -1; 2308 return fcntl (fd, F_GETFD) != -1;
992#endif 2309#endif
993} 2310}
994 2311
995/* called on EBADF to verify fds */ 2312/* called on EBADF to verify fds */
996static void noinline 2313ecb_noinline ecb_cold
2314static void
997fd_ebadf (EV_P) 2315fd_ebadf (EV_P)
998{ 2316{
999 int fd; 2317 int fd;
1000 2318
1001 for (fd = 0; fd < anfdmax; ++fd) 2319 for (fd = 0; fd < anfdmax; ++fd)
… …
1003 if (!fd_valid (fd) && errno == EBADF) 2321 if (!fd_valid (fd) && errno == EBADF)
1004 fd_kill (EV_A_ fd); 2322 fd_kill (EV_A_ fd);
1005} 2323}
1006 2324
1007/* called on ENOMEM in select/poll to kill some fds and retry */ 2325/* called on ENOMEM in select/poll to kill some fds and retry */
1008static void noinline 2326ecb_noinline ecb_cold
2327static void
1009fd_enomem (EV_P) 2328fd_enomem (EV_P)
1010{ 2329{
1011 int fd; 2330 int fd;
1012 2331
1013 for (fd = anfdmax; fd--; ) 2332 for (fd = anfdmax; fd--; )
… …
1017 break; 2336 break;
1018 } 2337 }
1019} 2338}
1020 2339
1021/* usually called after fork if backend needs to re-arm all fds from scratch */ 2340/* usually called after fork if backend needs to re-arm all fds from scratch */
1022static void noinline 2341ecb_noinline
2342static void
1023fd_rearm_all (EV_P) 2343fd_rearm_all (EV_P)
1024{ 2344{
1025 int fd; 2345 int fd;
1026 2346
1027 for (fd = 0; fd < anfdmax; ++fd) 2347 for (fd = 0; fd < anfdmax; ++fd)
… …
1031 anfds [fd].emask = 0; 2351 anfds [fd].emask = 0;
1032 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); 2352 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
1033 } 2353 }
1034} 2354}
1035 2355
2356/* used to prepare libev internal fd's */
2357/* this is not fork-safe */
2358inline_speed void
2359fd_intern (int fd)
2360{
2361#ifdef _WIN32
2362 unsigned long arg = 1;
2363 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
2364#else
2365 fcntl (fd, F_SETFD, FD_CLOEXEC);
2366 fcntl (fd, F_SETFL, O_NONBLOCK);
2367#endif
2368}
2369
1036/*****************************************************************************/ 2370/*****************************************************************************/
1037 2371
1038/* 2372/*
1039 * the heap functions want a real array index. array index 0 uis guaranteed to not 2373 * the heap functions want a real array index. array index 0 is guaranteed to not
1040 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 2374 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
1041 * the branching factor of the d-tree. 2375 * the branching factor of the d-tree.
1042 */ 2376 */
1043 2377
1044/* 2378/*
… …
1066 ev_tstamp minat; 2400 ev_tstamp minat;
1067 ANHE *minpos; 2401 ANHE *minpos;
1068 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; 2402 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
1069 2403
1070 /* find minimum child */ 2404 /* find minimum child */
1071 if (expect_true (pos + DHEAP - 1 < E)) 2405 if (ecb_expect_true (pos + DHEAP - 1 < E))
1072 { 2406 {
1073 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2407 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1074 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2408 if ( minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1075 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2409 if ( minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1076 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2410 if ( minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1077 } 2411 }
1078 else if (pos < E) 2412 else if (pos < E)
1079 { 2413 {
1080 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2414 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1081 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2415 if (pos + 1 < E && minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1082 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2416 if (pos + 2 < E && minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1083 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2417 if (pos + 3 < E && minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1084 } 2418 }
1085 else 2419 else
1086 break; 2420 break;
1087 2421
1088 if (ANHE_at (he) <= minat) 2422 if (ANHE_at (he) <= minat)
… …
1096 2430
1097 heap [k] = he; 2431 heap [k] = he;
1098 ev_active (ANHE_w (he)) = k; 2432 ev_active (ANHE_w (he)) = k;
1099} 2433}
1100 2434
1101#else /* 4HEAP */ 2435#else /* not 4HEAP */
1102 2436
1103#define HEAP0 1 2437#define HEAP0 1
1104#define HPARENT(k) ((k) >> 1) 2438#define HPARENT(k) ((k) >> 1)
1105#define UPHEAP_DONE(p,k) (!(p)) 2439#define UPHEAP_DONE(p,k) (!(p))
1106 2440
… …
1192 2526
1193static ANSIG signals [EV_NSIG - 1]; 2527static ANSIG signals [EV_NSIG - 1];
1194 2528
1195/*****************************************************************************/ 2529/*****************************************************************************/
1196 2530
1197/* used to prepare libev internal fd's */ 2531#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1198/* this is not fork-safe */ 2532
2533ecb_noinline ecb_cold
2534static void
2535evpipe_init (EV_P)
2536{
2537 if (!ev_is_active (&pipe_w))
2538 {
2539 int fds [2];
2540
2541# if EV_USE_EVENTFD
2542 fds [0] = -1;
2543 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
2544 if (fds [1] < 0 && errno == EINVAL)
2545 fds [1] = eventfd (0, 0);
2546
2547 if (fds [1] < 0)
2548# endif
2549 {
2550 while (pipe (fds))
2551 ev_syserr ("(libev) error creating signal/async pipe");
2552
2553 fd_intern (fds [0]);
2554 }
2555
2556 evpipe [0] = fds [0];
2557
2558 if (evpipe [1] < 0)
2559 evpipe [1] = fds [1]; /* first call, set write fd */
2560 else
2561 {
2562 /* on subsequent calls, do not change evpipe [1] */
2563 /* so that evpipe_write can always rely on its value. */
2564 /* this branch does not do anything sensible on windows, */
2565 /* so must not be executed on windows */
2566
2567 dup2 (fds [1], evpipe [1]);
2568 close (fds [1]);
2569 }
2570
2571 fd_intern (evpipe [1]);
2572
2573 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2574 ev_io_start (EV_A_ &pipe_w);
2575 ev_unref (EV_A); /* watcher should not keep loop alive */
2576 }
2577}
2578
1199inline_speed void 2579inline_speed void
1200fd_intern (int fd) 2580evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1201{ 2581{
1202#ifdef _WIN32 2582 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1203 unsigned long arg = 1;
1204 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1205#else
1206 fcntl (fd, F_SETFD, FD_CLOEXEC);
1207 fcntl (fd, F_SETFL, O_NONBLOCK);
1208#endif
1209}
1210 2583
1211static void noinline 2584 if (ecb_expect_true (*flag))
1212evpipe_init (EV_P) 2585 return;
1213{ 2586
1214 if (!ev_is_active (&pipe_w)) 2587 *flag = 1;
2588 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2589
2590 pipe_write_skipped = 1;
2591
2592 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2593
2594 if (pipe_write_wanted)
1215 { 2595 {
2596 int old_errno;
2597
2598 pipe_write_skipped = 0;
2599 ECB_MEMORY_FENCE_RELEASE;
2600
2601 old_errno = errno; /* save errno because write will clobber it */
2602
1216#if EV_USE_EVENTFD 2603#if EV_USE_EVENTFD
1217 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2604 if (evpipe [0] < 0)
1218 if (evfd < 0 && errno == EINVAL)
1219 evfd = eventfd (0, 0);
1220
1221 if (evfd >= 0)
1222 { 2605 {
1223 evpipe [0] = -1; 2606 uint64_t counter = 1;
1224 fd_intern (evfd); /* doing it twice doesn't hurt */ 2607 write (evpipe [1], &counter, sizeof (uint64_t));
1225 ev_io_set (&pipe_w, evfd, EV_READ);
1226 } 2608 }
1227 else 2609 else
1228#endif 2610#endif
1229 { 2611 {
1230 while (pipe (evpipe)) 2612#ifdef _WIN32
1231 ev_syserr ("(libev) error creating signal/async pipe"); 2613 WSABUF buf;
1232 2614 DWORD sent;
1233 fd_intern (evpipe [0]); 2615 buf.buf = (char *)&buf;
1234 fd_intern (evpipe [1]); 2616 buf.len = 1;
1235 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2617 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2618#else
2619 write (evpipe [1], &(evpipe [1]), 1);
2620#endif
1236 } 2621 }
1237
1238 ev_io_start (EV_A_ &pipe_w);
1239 ev_unref (EV_A); /* watcher should not keep loop alive */
1240 }
1241}
1242
1243inline_size void
1244evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1245{
1246 if (!*flag)
1247 {
1248 int old_errno = errno; /* save errno because write might clobber it */
1249
1250 *flag = 1;
1251
1252#if EV_USE_EVENTFD
1253 if (evfd >= 0)
1254 {
1255 uint64_t counter = 1;
1256 write (evfd, &counter, sizeof (uint64_t));
1257 }
1258 else
1259#endif
1260 write (evpipe [1], &old_errno, 1);
1261 2622
1262 errno = old_errno; 2623 errno = old_errno;
1263 } 2624 }
1264} 2625}
1265 2626
… …
1268static void 2629static void
1269pipecb (EV_P_ ev_io *iow, int revents) 2630pipecb (EV_P_ ev_io *iow, int revents)
1270{ 2631{
1271 int i; 2632 int i;
1272 2633
2634 if (revents & EV_READ)
2635 {
1273#if EV_USE_EVENTFD 2636#if EV_USE_EVENTFD
1274 if (evfd >= 0) 2637 if (evpipe [0] < 0)
1275 { 2638 {
1276 uint64_t counter; 2639 uint64_t counter;
1277 read (evfd, &counter, sizeof (uint64_t)); 2640 read (evpipe [1], &counter, sizeof (uint64_t));
1278 } 2641 }
1279 else 2642 else
1280#endif 2643#endif
1281 { 2644 {
1282 char dummy; 2645 char dummy[4];
2646#ifdef _WIN32
2647 WSABUF buf;
2648 DWORD recvd;
2649 DWORD flags = 0;
2650 buf.buf = dummy;
2651 buf.len = sizeof (dummy);
2652 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2653#else
1283 read (evpipe [0], &dummy, 1); 2654 read (evpipe [0], &dummy, sizeof (dummy));
2655#endif
2656 }
1284 } 2657 }
1285 2658
2659 pipe_write_skipped = 0;
2660
2661 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2662
2663#if EV_SIGNAL_ENABLE
1286 if (sig_pending) 2664 if (sig_pending)
1287 { 2665 {
1288 sig_pending = 0; 2666 sig_pending = 0;
1289 2667
2668 ECB_MEMORY_FENCE;
2669
1290 for (i = EV_NSIG - 1; i--; ) 2670 for (i = EV_NSIG - 1; i--; )
1291 if (expect_false (signals [i].pending)) 2671 if (ecb_expect_false (signals [i].pending))
1292 ev_feed_signal_event (EV_A_ i + 1); 2672 ev_feed_signal_event (EV_A_ i + 1);
1293 } 2673 }
2674#endif
1294 2675
1295#if EV_ASYNC_ENABLE 2676#if EV_ASYNC_ENABLE
1296 if (async_pending) 2677 if (async_pending)
1297 { 2678 {
1298 async_pending = 0; 2679 async_pending = 0;
2680
2681 ECB_MEMORY_FENCE;
1299 2682
1300 for (i = asynccnt; i--; ) 2683 for (i = asynccnt; i--; )
1301 if (asyncs [i]->sent) 2684 if (asyncs [i]->sent)
1302 { 2685 {
1303 asyncs [i]->sent = 0; 2686 asyncs [i]->sent = 0;
2687 ECB_MEMORY_FENCE_RELEASE;
1304 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2688 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1305 } 2689 }
1306 } 2690 }
1307#endif 2691#endif
1308} 2692}
1309 2693
1310/*****************************************************************************/ 2694/*****************************************************************************/
1311 2695
2696void
2697ev_feed_signal (int signum) EV_NOEXCEPT
2698{
2699#if EV_MULTIPLICITY
2700 EV_P;
2701 ECB_MEMORY_FENCE_ACQUIRE;
2702 EV_A = signals [signum - 1].loop;
2703
2704 if (!EV_A)
2705 return;
2706#endif
2707
2708 signals [signum - 1].pending = 1;
2709 evpipe_write (EV_A_ &sig_pending);
2710}
2711
1312static void 2712static void
1313ev_sighandler (int signum) 2713ev_sighandler (int signum)
1314{ 2714{
1315#if EV_MULTIPLICITY
1316 EV_P = signals [signum - 1].loop;
1317#endif
1318
1319#ifdef _WIN32 2715#ifdef _WIN32
1320 signal (signum, ev_sighandler); 2716 signal (signum, ev_sighandler);
1321#endif 2717#endif
1322 2718
1323 signals [signum - 1].pending = 1; 2719 ev_feed_signal (signum);
1324 evpipe_write (EV_A_ &sig_pending);
1325} 2720}
1326 2721
1327void noinline 2722ecb_noinline
2723void
1328ev_feed_signal_event (EV_P_ int signum) 2724ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
1329{ 2725{
1330 WL w; 2726 WL w;
1331 2727
1332 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2728 if (ecb_expect_false (signum <= 0 || signum >= EV_NSIG))
1333 return; 2729 return;
1334 2730
1335 --signum; 2731 --signum;
1336 2732
1337#if EV_MULTIPLICITY 2733#if EV_MULTIPLICITY
1338 /* it is permissible to try to feed a signal to the wrong loop */ 2734 /* it is permissible to try to feed a signal to the wrong loop */
1339 /* or, likely more useful, feeding a signal nobody is waiting for */ 2735 /* or, likely more useful, feeding a signal nobody is waiting for */
1340 2736
1341 if (expect_false (signals [signum].loop != EV_A)) 2737 if (ecb_expect_false (signals [signum].loop != EV_A))
1342 return; 2738 return;
1343#endif 2739#endif
1344 2740
1345 signals [signum].pending = 0; 2741 signals [signum].pending = 0;
2742 ECB_MEMORY_FENCE_RELEASE;
1346 2743
1347 for (w = signals [signum].head; w; w = w->next) 2744 for (w = signals [signum].head; w; w = w->next)
1348 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2745 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1349} 2746}
1350 2747
… …
1366 break; 2763 break;
1367 } 2764 }
1368} 2765}
1369#endif 2766#endif
1370 2767
2768#endif
2769
1371/*****************************************************************************/ 2770/*****************************************************************************/
1372 2771
2772#if EV_CHILD_ENABLE
1373static WL childs [EV_PID_HASHSIZE]; 2773static WL childs [EV_PID_HASHSIZE];
1374
1375#ifndef _WIN32
1376 2774
1377static ev_signal childev; 2775static ev_signal childev;
1378 2776
1379#ifndef WIFCONTINUED 2777#ifndef WIFCONTINUED
1380# define WIFCONTINUED(status) 0 2778# define WIFCONTINUED(status) 0
… …
1385child_reap (EV_P_ int chain, int pid, int status) 2783child_reap (EV_P_ int chain, int pid, int status)
1386{ 2784{
1387 ev_child *w; 2785 ev_child *w;
1388 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2786 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1389 2787
1390 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2788 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1391 { 2789 {
1392 if ((w->pid == pid || !w->pid) 2790 if ((w->pid == pid || !w->pid)
1393 && (!traced || (w->flags & 1))) 2791 && (!traced || (w->flags & 1)))
1394 { 2792 {
1395 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2793 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1420 /* make sure we are called again until all children have been reaped */ 2818 /* make sure we are called again until all children have been reaped */
1421 /* we need to do it this way so that the callback gets called before we continue */ 2819 /* we need to do it this way so that the callback gets called before we continue */
1422 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2820 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1423 2821
1424 child_reap (EV_A_ pid, pid, status); 2822 child_reap (EV_A_ pid, pid, status);
1425 if (EV_PID_HASHSIZE > 1) 2823 if ((EV_PID_HASHSIZE) > 1)
1426 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2824 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1427} 2825}
1428 2826
1429#endif 2827#endif
1430 2828
1431/*****************************************************************************/ 2829/*****************************************************************************/
1432 2830
2831#if EV_USE_IOCP
2832# include "ev_iocp.c"
2833#endif
1433#if EV_USE_PORT 2834#if EV_USE_PORT
1434# include "ev_port.c" 2835# include "ev_port.c"
1435#endif 2836#endif
1436#if EV_USE_KQUEUE 2837#if EV_USE_KQUEUE
1437# include "ev_kqueue.c" 2838# include "ev_kqueue.c"
1438#endif 2839#endif
1439#if EV_USE_EPOLL 2840#if EV_USE_EPOLL
1440# include "ev_epoll.c" 2841# include "ev_epoll.c"
1441#endif 2842#endif
2843#if EV_USE_LINUXAIO
2844# include "ev_linuxaio.c"
2845#endif
2846#if EV_USE_IOURING
2847# include "ev_iouring.c"
2848#endif
1442#if EV_USE_POLL 2849#if EV_USE_POLL
1443# include "ev_poll.c" 2850# include "ev_poll.c"
1444#endif 2851#endif
1445#if EV_USE_SELECT 2852#if EV_USE_SELECT
1446# include "ev_select.c" 2853# include "ev_select.c"
1447#endif 2854#endif
1448 2855
1449int 2856ecb_cold int
1450ev_version_major (void) 2857ev_version_major (void) EV_NOEXCEPT
1451{ 2858{
1452 return EV_VERSION_MAJOR; 2859 return EV_VERSION_MAJOR;
1453} 2860}
1454 2861
1455int 2862ecb_cold int
1456ev_version_minor (void) 2863ev_version_minor (void) EV_NOEXCEPT
1457{ 2864{
1458 return EV_VERSION_MINOR; 2865 return EV_VERSION_MINOR;
1459} 2866}
1460 2867
1461/* return true if we are running with elevated privileges and should ignore env variables */ 2868/* return true if we are running with elevated privileges and should ignore env variables */
1462int inline_size 2869inline_size ecb_cold int
1463enable_secure (void) 2870enable_secure (void)
1464{ 2871{
1465#ifdef _WIN32 2872#ifdef _WIN32
1466 return 0; 2873 return 0;
1467#else 2874#else
1468 return getuid () != geteuid () 2875 return getuid () != geteuid ()
1469 || getgid () != getegid (); 2876 || getgid () != getegid ();
1470#endif 2877#endif
1471} 2878}
1472 2879
2880ecb_cold
1473unsigned int 2881unsigned int
1474ev_supported_backends (void) 2882ev_supported_backends (void) EV_NOEXCEPT
1475{ 2883{
1476 unsigned int flags = 0; 2884 unsigned int flags = 0;
1477 2885
1478 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2886 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1479 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2887 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
1480 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 2888 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2889 if (EV_USE_LINUXAIO) flags |= EVBACKEND_LINUXAIO;
2890 if (EV_USE_IOURING ) flags |= EVBACKEND_IOURING;
1481 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 2891 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
1482 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2892 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
1483 2893
1484 return flags; 2894 return flags;
1485} 2895}
1486 2896
2897ecb_cold
1487unsigned int 2898unsigned int
1488ev_recommended_backends (void) 2899ev_recommended_backends (void) EV_NOEXCEPT
1489{ 2900{
1490 unsigned int flags = ev_supported_backends (); 2901 unsigned int flags = ev_supported_backends ();
1491 2902
1492#ifndef __NetBSD__ 2903#ifndef __NetBSD__
1493 /* kqueue is borked on everything but netbsd apparently */ 2904 /* kqueue is borked on everything but netbsd apparently */
… …
1497#ifdef __APPLE__ 2908#ifdef __APPLE__
1498 /* only select works correctly on that "unix-certified" platform */ 2909 /* only select works correctly on that "unix-certified" platform */
1499 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2910 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1500 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 2911 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1501#endif 2912#endif
2913#ifdef __FreeBSD__
2914 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2915#endif
2916
2917 /* TODO: linuxaio is very experimental */
2918#if !EV_RECOMMEND_LINUXAIO
2919 flags &= ~EVBACKEND_LINUXAIO;
2920#endif
2921 /* TODO: linuxaio is super experimental */
2922#if !EV_RECOMMEND_IOURING
2923 flags &= ~EVBACKEND_IOURING;
2924#endif
1502 2925
1503 return flags; 2926 return flags;
1504} 2927}
1505 2928
2929ecb_cold
1506unsigned int 2930unsigned int
1507ev_embeddable_backends (void) 2931ev_embeddable_backends (void) EV_NOEXCEPT
1508{ 2932{
1509 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2933 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1510 2934
1511 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2935 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1512 /* please fix it and tell me how to detect the fix */ 2936 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1513 flags &= ~EVBACKEND_EPOLL; 2937 flags &= ~EVBACKEND_EPOLL;
2938
2939 /* EVBACKEND_LINUXAIO is theoretically embeddable, but suffers from a performance overhead */
2940
2941 /* EVBACKEND_IOURING is practically embeddable, but the current implementation is not
2942 * because our backend_fd is the epoll fd we need as fallback.
2943 * if the kernel ever is fixed, this might change...
2944 */
1514 2945
1515 return flags; 2946 return flags;
1516} 2947}
1517 2948
1518unsigned int 2949unsigned int
1519ev_backend (EV_P) 2950ev_backend (EV_P) EV_NOEXCEPT
1520{ 2951{
1521 return backend; 2952 return backend;
1522} 2953}
1523 2954
1524#if EV_MINIMAL < 2 2955#if EV_FEATURE_API
1525unsigned int 2956unsigned int
1526ev_loop_count (EV_P) 2957ev_iteration (EV_P) EV_NOEXCEPT
1527{ 2958{
1528 return loop_count; 2959 return loop_count;
1529} 2960}
1530 2961
1531unsigned int 2962unsigned int
1532ev_loop_depth (EV_P) 2963ev_depth (EV_P) EV_NOEXCEPT
1533{ 2964{
1534 return loop_depth; 2965 return loop_depth;
1535} 2966}
1536 2967
1537void 2968void
1538ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2969ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1539{ 2970{
1540 io_blocktime = interval; 2971 io_blocktime = interval;
1541} 2972}
1542 2973
1543void 2974void
1544ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2975ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1545{ 2976{
1546 timeout_blocktime = interval; 2977 timeout_blocktime = interval;
1547} 2978}
1548 2979
1549void 2980void
1550ev_set_userdata (EV_P_ void *data) 2981ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
1551{ 2982{
1552 userdata = data; 2983 userdata = data;
1553} 2984}
1554 2985
1555void * 2986void *
1556ev_userdata (EV_P) 2987ev_userdata (EV_P) EV_NOEXCEPT
1557{ 2988{
1558 return userdata; 2989 return userdata;
1559} 2990}
1560 2991
2992void
1561void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2993ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
1562{ 2994{
1563 invoke_cb = invoke_pending_cb; 2995 invoke_cb = invoke_pending_cb;
1564} 2996}
1565 2997
2998void
1566void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2999ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
1567{ 3000{
1568 release_cb = release; 3001 release_cb = release;
1569 acquire_cb = acquire; 3002 acquire_cb = acquire;
1570} 3003}
1571#endif 3004#endif
1572 3005
1573/* initialise a loop structure, must be zero-initialised */ 3006/* initialise a loop structure, must be zero-initialised */
1574static void noinline 3007ecb_noinline ecb_cold
3008static void
1575loop_init (EV_P_ unsigned int flags) 3009loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
1576{ 3010{
1577 if (!backend) 3011 if (!backend)
1578 { 3012 {
3013 origflags = flags;
3014
1579#if EV_USE_REALTIME 3015#if EV_USE_REALTIME
1580 if (!have_realtime) 3016 if (!have_realtime)
1581 { 3017 {
1582 struct timespec ts; 3018 struct timespec ts;
1583 3019
… …
1605 if (!(flags & EVFLAG_NOENV) 3041 if (!(flags & EVFLAG_NOENV)
1606 && !enable_secure () 3042 && !enable_secure ()
1607 && getenv ("LIBEV_FLAGS")) 3043 && getenv ("LIBEV_FLAGS"))
1608 flags = atoi (getenv ("LIBEV_FLAGS")); 3044 flags = atoi (getenv ("LIBEV_FLAGS"));
1609 3045
1610 ev_rt_now = ev_time (); 3046 ev_rt_now = ev_time ();
1611 mn_now = get_clock (); 3047 mn_now = get_clock ();
1612 now_floor = mn_now; 3048 now_floor = mn_now;
1613 rtmn_diff = ev_rt_now - mn_now; 3049 rtmn_diff = ev_rt_now - mn_now;
1614#if EV_MINIMAL < 2 3050#if EV_FEATURE_API
1615 invoke_cb = ev_invoke_pending; 3051 invoke_cb = ev_invoke_pending;
1616#endif 3052#endif
1617 3053
1618 io_blocktime = 0.; 3054 io_blocktime = 0.;
1619 timeout_blocktime = 0.; 3055 timeout_blocktime = 0.;
1620 backend = 0; 3056 backend = 0;
1621 backend_fd = -1; 3057 backend_fd = -1;
1622 sig_pending = 0; 3058 sig_pending = 0;
1623#if EV_ASYNC_ENABLE 3059#if EV_ASYNC_ENABLE
1624 async_pending = 0; 3060 async_pending = 0;
1625#endif 3061#endif
3062 pipe_write_skipped = 0;
3063 pipe_write_wanted = 0;
3064 evpipe [0] = -1;
3065 evpipe [1] = -1;
1626#if EV_USE_INOTIFY 3066#if EV_USE_INOTIFY
1627 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 3067 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1628#endif 3068#endif
1629#if EV_USE_SIGNALFD 3069#if EV_USE_SIGNALFD
1630 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 3070 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1631#endif 3071#endif
1632 3072
1633 if (!(flags & 0x0000ffffU)) 3073 if (!(flags & EVBACKEND_MASK))
1634 flags |= ev_recommended_backends (); 3074 flags |= ev_recommended_backends ();
1635 3075
3076#if EV_USE_IOCP
3077 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
3078#endif
1636#if EV_USE_PORT 3079#if EV_USE_PORT
1637 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 3080 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1638#endif 3081#endif
1639#if EV_USE_KQUEUE 3082#if EV_USE_KQUEUE
1640 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 3083 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
3084#endif
3085#if EV_USE_IOURING
3086 if (!backend && (flags & EVBACKEND_IOURING )) backend = iouring_init (EV_A_ flags);
3087#endif
3088#if EV_USE_LINUXAIO
3089 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
1641#endif 3090#endif
1642#if EV_USE_EPOLL 3091#if EV_USE_EPOLL
1643 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 3092 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
1644#endif 3093#endif
1645#if EV_USE_POLL 3094#if EV_USE_POLL
1646 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 3095 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
1647#endif 3096#endif
1648#if EV_USE_SELECT 3097#if EV_USE_SELECT
1649 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 3098 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
1650#endif 3099#endif
1651 3100
1652 ev_prepare_init (&pending_w, pendingcb); 3101 ev_prepare_init (&pending_w, pendingcb);
1653 3102
3103#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1654 ev_init (&pipe_w, pipecb); 3104 ev_init (&pipe_w, pipecb);
1655 ev_set_priority (&pipe_w, EV_MAXPRI); 3105 ev_set_priority (&pipe_w, EV_MAXPRI);
3106#endif
1656 } 3107 }
1657} 3108}
1658 3109
1659/* free up a loop structure */ 3110/* free up a loop structure */
1660static void noinline 3111ecb_cold
3112void
1661loop_destroy (EV_P) 3113ev_loop_destroy (EV_P)
1662{ 3114{
1663 int i; 3115 int i;
3116
3117#if EV_MULTIPLICITY
3118 /* mimic free (0) */
3119 if (!EV_A)
3120 return;
3121#endif
3122
3123#if EV_CLEANUP_ENABLE
3124 /* queue cleanup watchers (and execute them) */
3125 if (ecb_expect_false (cleanupcnt))
3126 {
3127 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
3128 EV_INVOKE_PENDING;
3129 }
3130#endif
3131
3132#if EV_CHILD_ENABLE
3133 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
3134 {
3135 ev_ref (EV_A); /* child watcher */
3136 ev_signal_stop (EV_A_ &childev);
3137 }
3138#endif
1664 3139
1665 if (ev_is_active (&pipe_w)) 3140 if (ev_is_active (&pipe_w))
1666 { 3141 {
1667 /*ev_ref (EV_A);*/ 3142 /*ev_ref (EV_A);*/
1668 /*ev_io_stop (EV_A_ &pipe_w);*/ 3143 /*ev_io_stop (EV_A_ &pipe_w);*/
1669 3144
1670#if EV_USE_EVENTFD
1671 if (evfd >= 0)
1672 close (evfd);
1673#endif
1674
1675 if (evpipe [0] >= 0)
1676 {
1677 EV_WIN32_CLOSE_FD (evpipe [0]); 3145 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1678 EV_WIN32_CLOSE_FD (evpipe [1]); 3146 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1679 }
1680 } 3147 }
1681 3148
1682#if EV_USE_SIGNALFD 3149#if EV_USE_SIGNALFD
1683 if (ev_is_active (&sigfd_w)) 3150 if (ev_is_active (&sigfd_w))
1684 close (sigfd); 3151 close (sigfd);
… …
1690#endif 3157#endif
1691 3158
1692 if (backend_fd >= 0) 3159 if (backend_fd >= 0)
1693 close (backend_fd); 3160 close (backend_fd);
1694 3161
3162#if EV_USE_IOCP
3163 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
3164#endif
1695#if EV_USE_PORT 3165#if EV_USE_PORT
1696 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3166 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1697#endif 3167#endif
1698#if EV_USE_KQUEUE 3168#if EV_USE_KQUEUE
1699 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3169 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
3170#endif
3171#if EV_USE_IOURING
3172 if (backend == EVBACKEND_IOURING ) iouring_destroy (EV_A);
3173#endif
3174#if EV_USE_LINUXAIO
3175 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
1700#endif 3176#endif
1701#if EV_USE_EPOLL 3177#if EV_USE_EPOLL
1702 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3178 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
1703#endif 3179#endif
1704#if EV_USE_POLL 3180#if EV_USE_POLL
1705 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3181 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
1706#endif 3182#endif
1707#if EV_USE_SELECT 3183#if EV_USE_SELECT
1708 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3184 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
1709#endif 3185#endif
1710 3186
1711 for (i = NUMPRI; i--; ) 3187 for (i = NUMPRI; i--; )
1712 { 3188 {
1713 array_free (pending, [i]); 3189 array_free (pending, [i]);
… …
1726 array_free (periodic, EMPTY); 3202 array_free (periodic, EMPTY);
1727#endif 3203#endif
1728#if EV_FORK_ENABLE 3204#if EV_FORK_ENABLE
1729 array_free (fork, EMPTY); 3205 array_free (fork, EMPTY);
1730#endif 3206#endif
3207#if EV_CLEANUP_ENABLE
3208 array_free (cleanup, EMPTY);
3209#endif
1731 array_free (prepare, EMPTY); 3210 array_free (prepare, EMPTY);
1732 array_free (check, EMPTY); 3211 array_free (check, EMPTY);
1733#if EV_ASYNC_ENABLE 3212#if EV_ASYNC_ENABLE
1734 array_free (async, EMPTY); 3213 array_free (async, EMPTY);
1735#endif 3214#endif
1736 3215
1737 backend = 0; 3216 backend = 0;
3217
3218#if EV_MULTIPLICITY
3219 if (ev_is_default_loop (EV_A))
3220#endif
3221 ev_default_loop_ptr = 0;
3222#if EV_MULTIPLICITY
3223 else
3224 ev_free (EV_A);
3225#endif
1738} 3226}
1739 3227
1740#if EV_USE_INOTIFY 3228#if EV_USE_INOTIFY
1741inline_size void infy_fork (EV_P); 3229inline_size void infy_fork (EV_P);
1742#endif 3230#endif
1743 3231
1744inline_size void 3232inline_size void
1745loop_fork (EV_P) 3233loop_fork (EV_P)
1746{ 3234{
1747#if EV_USE_PORT 3235#if EV_USE_PORT
1748 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3236 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1749#endif 3237#endif
1750#if EV_USE_KQUEUE 3238#if EV_USE_KQUEUE
1751 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 3239 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
3240#endif
3241#if EV_USE_IOURING
3242 if (backend == EVBACKEND_IOURING ) iouring_fork (EV_A);
3243#endif
3244#if EV_USE_LINUXAIO
3245 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
1752#endif 3246#endif
1753#if EV_USE_EPOLL 3247#if EV_USE_EPOLL
1754 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3248 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
1755#endif 3249#endif
1756#if EV_USE_INOTIFY 3250#if EV_USE_INOTIFY
1757 infy_fork (EV_A); 3251 infy_fork (EV_A);
1758#endif 3252#endif
1759 3253
3254#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1760 if (ev_is_active (&pipe_w)) 3255 if (ev_is_active (&pipe_w) && postfork != 2)
1761 { 3256 {
1762 /* this "locks" the handlers against writing to the pipe */ 3257 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1763 /* while we modify the fd vars */
1764 sig_pending = 1;
1765#if EV_ASYNC_ENABLE
1766 async_pending = 1;
1767#endif
1768 3258
1769 ev_ref (EV_A); 3259 ev_ref (EV_A);
1770 ev_io_stop (EV_A_ &pipe_w); 3260 ev_io_stop (EV_A_ &pipe_w);
1771 3261
1772#if EV_USE_EVENTFD
1773 if (evfd >= 0)
1774 close (evfd);
1775#endif
1776
1777 if (evpipe [0] >= 0) 3262 if (evpipe [0] >= 0)
1778 {
1779 EV_WIN32_CLOSE_FD (evpipe [0]); 3263 EV_WIN32_CLOSE_FD (evpipe [0]);
1780 EV_WIN32_CLOSE_FD (evpipe [1]);
1781 }
1782 3264
1783 evpipe_init (EV_A); 3265 evpipe_init (EV_A);
1784 /* now iterate over everything, in case we missed something */ 3266 /* iterate over everything, in case we missed something before */
1785 pipecb (EV_A_ &pipe_w, EV_READ); 3267 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1786 } 3268 }
3269#endif
1787 3270
1788 postfork = 0; 3271 postfork = 0;
1789} 3272}
1790 3273
1791#if EV_MULTIPLICITY 3274#if EV_MULTIPLICITY
1792 3275
3276ecb_cold
1793struct ev_loop * 3277struct ev_loop *
1794ev_loop_new (unsigned int flags) 3278ev_loop_new (unsigned int flags) EV_NOEXCEPT
1795{ 3279{
1796 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3280 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1797 3281
1798 memset (EV_A, 0, sizeof (struct ev_loop)); 3282 memset (EV_A, 0, sizeof (struct ev_loop));
1799 loop_init (EV_A_ flags); 3283 loop_init (EV_A_ flags);
1800 3284
1801 if (ev_backend (EV_A)) 3285 if (ev_backend (EV_A))
1802 return EV_A; 3286 return EV_A;
1803 3287
3288 ev_free (EV_A);
1804 return 0; 3289 return 0;
1805} 3290}
1806 3291
1807void
1808ev_loop_destroy (EV_P)
1809{
1810 loop_destroy (EV_A);
1811 ev_free (loop);
1812}
1813
1814void
1815ev_loop_fork (EV_P)
1816{
1817 postfork = 1; /* must be in line with ev_default_fork */
1818}
1819#endif /* multiplicity */ 3292#endif /* multiplicity */
1820 3293
1821#if EV_VERIFY 3294#if EV_VERIFY
1822static void noinline 3295ecb_noinline ecb_cold
3296static void
1823verify_watcher (EV_P_ W w) 3297verify_watcher (EV_P_ W w)
1824{ 3298{
1825 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3299 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1826 3300
1827 if (w->pending) 3301 if (w->pending)
1828 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3302 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1829} 3303}
1830 3304
1831static void noinline 3305ecb_noinline ecb_cold
3306static void
1832verify_heap (EV_P_ ANHE *heap, int N) 3307verify_heap (EV_P_ ANHE *heap, int N)
1833{ 3308{
1834 int i; 3309 int i;
1835 3310
1836 for (i = HEAP0; i < N + HEAP0; ++i) 3311 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1841 3316
1842 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3317 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1843 } 3318 }
1844} 3319}
1845 3320
1846static void noinline 3321ecb_noinline ecb_cold
3322static void
1847array_verify (EV_P_ W *ws, int cnt) 3323array_verify (EV_P_ W *ws, int cnt)
1848{ 3324{
1849 while (cnt--) 3325 while (cnt--)
1850 { 3326 {
1851 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3327 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1852 verify_watcher (EV_A_ ws [cnt]); 3328 verify_watcher (EV_A_ ws [cnt]);
1853 } 3329 }
1854} 3330}
1855#endif 3331#endif
1856 3332
1857#if EV_MINIMAL < 2 3333#if EV_FEATURE_API
1858void 3334void ecb_cold
1859ev_loop_verify (EV_P) 3335ev_verify (EV_P) EV_NOEXCEPT
1860{ 3336{
1861#if EV_VERIFY 3337#if EV_VERIFY
1862 int i; 3338 int i;
1863 WL w; 3339 WL w, w2;
1864 3340
1865 assert (activecnt >= -1); 3341 assert (activecnt >= -1);
1866 3342
1867 assert (fdchangemax >= fdchangecnt); 3343 assert (fdchangemax >= fdchangecnt);
1868 for (i = 0; i < fdchangecnt; ++i) 3344 for (i = 0; i < fdchangecnt; ++i)
1869 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3345 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1870 3346
1871 assert (anfdmax >= 0); 3347 assert (anfdmax >= 0);
1872 for (i = 0; i < anfdmax; ++i) 3348 for (i = 0; i < anfdmax; ++i)
3349 {
3350 int j = 0;
3351
1873 for (w = anfds [i].head; w; w = w->next) 3352 for (w = w2 = anfds [i].head; w; w = w->next)
1874 { 3353 {
1875 verify_watcher (EV_A_ (W)w); 3354 verify_watcher (EV_A_ (W)w);
3355
3356 if (j++ & 1)
3357 {
3358 assert (("libev: io watcher list contains a loop", w != w2));
3359 w2 = w2->next;
3360 }
3361
1876 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3362 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1877 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 3363 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1878 } 3364 }
3365 }
1879 3366
1880 assert (timermax >= timercnt); 3367 assert (timermax >= timercnt);
1881 verify_heap (EV_A_ timers, timercnt); 3368 verify_heap (EV_A_ timers, timercnt);
1882 3369
1883#if EV_PERIODIC_ENABLE 3370#if EV_PERIODIC_ENABLE
… …
1898#if EV_FORK_ENABLE 3385#if EV_FORK_ENABLE
1899 assert (forkmax >= forkcnt); 3386 assert (forkmax >= forkcnt);
1900 array_verify (EV_A_ (W *)forks, forkcnt); 3387 array_verify (EV_A_ (W *)forks, forkcnt);
1901#endif 3388#endif
1902 3389
3390#if EV_CLEANUP_ENABLE
3391 assert (cleanupmax >= cleanupcnt);
3392 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
3393#endif
3394
1903#if EV_ASYNC_ENABLE 3395#if EV_ASYNC_ENABLE
1904 assert (asyncmax >= asynccnt); 3396 assert (asyncmax >= asynccnt);
1905 array_verify (EV_A_ (W *)asyncs, asynccnt); 3397 array_verify (EV_A_ (W *)asyncs, asynccnt);
1906#endif 3398#endif
1907 3399
3400#if EV_PREPARE_ENABLE
1908 assert (preparemax >= preparecnt); 3401 assert (preparemax >= preparecnt);
1909 array_verify (EV_A_ (W *)prepares, preparecnt); 3402 array_verify (EV_A_ (W *)prepares, preparecnt);
3403#endif
1910 3404
3405#if EV_CHECK_ENABLE
1911 assert (checkmax >= checkcnt); 3406 assert (checkmax >= checkcnt);
1912 array_verify (EV_A_ (W *)checks, checkcnt); 3407 array_verify (EV_A_ (W *)checks, checkcnt);
3408#endif
1913 3409
1914# if 0 3410# if 0
3411#if EV_CHILD_ENABLE
1915 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 3412 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1916 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending) 3413 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
3414#endif
1917# endif 3415# endif
1918#endif 3416#endif
1919} 3417}
1920#endif 3418#endif
1921 3419
1922#if EV_MULTIPLICITY 3420#if EV_MULTIPLICITY
3421ecb_cold
1923struct ev_loop * 3422struct ev_loop *
1924ev_default_loop_init (unsigned int flags)
1925#else 3423#else
1926int 3424int
3425#endif
1927ev_default_loop (unsigned int flags) 3426ev_default_loop (unsigned int flags) EV_NOEXCEPT
1928#endif
1929{ 3427{
1930 if (!ev_default_loop_ptr) 3428 if (!ev_default_loop_ptr)
1931 { 3429 {
1932#if EV_MULTIPLICITY 3430#if EV_MULTIPLICITY
1933 EV_P = ev_default_loop_ptr = &default_loop_struct; 3431 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1937 3435
1938 loop_init (EV_A_ flags); 3436 loop_init (EV_A_ flags);
1939 3437
1940 if (ev_backend (EV_A)) 3438 if (ev_backend (EV_A))
1941 { 3439 {
1942#ifndef _WIN32 3440#if EV_CHILD_ENABLE
1943 ev_signal_init (&childev, childcb, SIGCHLD); 3441 ev_signal_init (&childev, childcb, SIGCHLD);
1944 ev_set_priority (&childev, EV_MAXPRI); 3442 ev_set_priority (&childev, EV_MAXPRI);
1945 ev_signal_start (EV_A_ &childev); 3443 ev_signal_start (EV_A_ &childev);
1946 ev_unref (EV_A); /* child watcher should not keep loop alive */ 3444 ev_unref (EV_A); /* child watcher should not keep loop alive */
1947#endif 3445#endif
… …
1952 3450
1953 return ev_default_loop_ptr; 3451 return ev_default_loop_ptr;
1954} 3452}
1955 3453
1956void 3454void
1957ev_default_destroy (void) 3455ev_loop_fork (EV_P) EV_NOEXCEPT
1958{ 3456{
1959#if EV_MULTIPLICITY 3457 postfork = 1;
1960 EV_P = ev_default_loop_ptr;
1961#endif
1962
1963 ev_default_loop_ptr = 0;
1964
1965#ifndef _WIN32
1966 ev_ref (EV_A); /* child watcher */
1967 ev_signal_stop (EV_A_ &childev);
1968#endif
1969
1970 loop_destroy (EV_A);
1971}
1972
1973void
1974ev_default_fork (void)
1975{
1976#if EV_MULTIPLICITY
1977 EV_P = ev_default_loop_ptr;
1978#endif
1979
1980 postfork = 1; /* must be in line with ev_loop_fork */
1981} 3458}
1982 3459
1983/*****************************************************************************/ 3460/*****************************************************************************/
1984 3461
1985void 3462void
… …
1987{ 3464{
1988 EV_CB_INVOKE ((W)w, revents); 3465 EV_CB_INVOKE ((W)w, revents);
1989} 3466}
1990 3467
1991unsigned int 3468unsigned int
1992ev_pending_count (EV_P) 3469ev_pending_count (EV_P) EV_NOEXCEPT
1993{ 3470{
1994 int pri; 3471 int pri;
1995 unsigned int count = 0; 3472 unsigned int count = 0;
1996 3473
1997 for (pri = NUMPRI; pri--; ) 3474 for (pri = NUMPRI; pri--; )
1998 count += pendingcnt [pri]; 3475 count += pendingcnt [pri];
1999 3476
2000 return count; 3477 return count;
2001} 3478}
2002 3479
2003void noinline 3480ecb_noinline
3481void
2004ev_invoke_pending (EV_P) 3482ev_invoke_pending (EV_P)
2005{ 3483{
2006 int pri; 3484 pendingpri = NUMPRI;
2007 3485
2008 for (pri = NUMPRI; pri--; ) 3486 do
3487 {
3488 --pendingpri;
3489
3490 /* pendingpri possibly gets modified in the inner loop */
2009 while (pendingcnt [pri]) 3491 while (pendingcnt [pendingpri])
2010 { 3492 {
2011 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3493 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2012 3494
2013 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2014 /* ^ this is no longer true, as pending_w could be here */
2015
2016 p->w->pending = 0; 3495 p->w->pending = 0;
2017 EV_CB_INVOKE (p->w, p->events); 3496 EV_CB_INVOKE (p->w, p->events);
2018 EV_FREQUENT_CHECK; 3497 EV_FREQUENT_CHECK;
2019 } 3498 }
3499 }
3500 while (pendingpri);
2020} 3501}
2021 3502
2022#if EV_IDLE_ENABLE 3503#if EV_IDLE_ENABLE
2023/* make idle watchers pending. this handles the "call-idle */ 3504/* make idle watchers pending. this handles the "call-idle */
2024/* only when higher priorities are idle" logic */ 3505/* only when higher priorities are idle" logic */
2025inline_size void 3506inline_size void
2026idle_reify (EV_P) 3507idle_reify (EV_P)
2027{ 3508{
2028 if (expect_false (idleall)) 3509 if (ecb_expect_false (idleall))
2029 { 3510 {
2030 int pri; 3511 int pri;
2031 3512
2032 for (pri = NUMPRI; pri--; ) 3513 for (pri = NUMPRI; pri--; )
2033 { 3514 {
… …
2076 EV_FREQUENT_CHECK; 3557 EV_FREQUENT_CHECK;
2077 feed_reverse (EV_A_ (W)w); 3558 feed_reverse (EV_A_ (W)w);
2078 } 3559 }
2079 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 3560 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
2080 3561
2081 feed_reverse_done (EV_A_ EV_TIMEOUT); 3562 feed_reverse_done (EV_A_ EV_TIMER);
2082 } 3563 }
2083} 3564}
2084 3565
2085#if EV_PERIODIC_ENABLE 3566#if EV_PERIODIC_ENABLE
3567
3568ecb_noinline
3569static void
3570periodic_recalc (EV_P_ ev_periodic *w)
3571{
3572 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3573 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3574
3575 /* the above almost always errs on the low side */
3576 while (at <= ev_rt_now)
3577 {
3578 ev_tstamp nat = at + w->interval;
3579
3580 /* when resolution fails us, we use ev_rt_now */
3581 if (ecb_expect_false (nat == at))
3582 {
3583 at = ev_rt_now;
3584 break;
3585 }
3586
3587 at = nat;
3588 }
3589
3590 ev_at (w) = at;
3591}
3592
2086/* make periodics pending */ 3593/* make periodics pending */
2087inline_size void 3594inline_size void
2088periodics_reify (EV_P) 3595periodics_reify (EV_P)
2089{ 3596{
2090 EV_FREQUENT_CHECK; 3597 EV_FREQUENT_CHECK;
2091 3598
2092 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3599 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2093 { 3600 {
2094 int feed_count = 0;
2095
2096 do 3601 do
2097 { 3602 {
2098 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3603 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2099 3604
2100 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3605 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2109 ANHE_at_cache (periodics [HEAP0]); 3614 ANHE_at_cache (periodics [HEAP0]);
2110 downheap (periodics, periodiccnt, HEAP0); 3615 downheap (periodics, periodiccnt, HEAP0);
2111 } 3616 }
2112 else if (w->interval) 3617 else if (w->interval)
2113 { 3618 {
2114 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3619 periodic_recalc (EV_A_ w);
2115 /* if next trigger time is not sufficiently in the future, put it there */
2116 /* this might happen because of floating point inexactness */
2117 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2118 {
2119 ev_at (w) += w->interval;
2120
2121 /* if interval is unreasonably low we might still have a time in the past */
2122 /* so correct this. this will make the periodic very inexact, but the user */
2123 /* has effectively asked to get triggered more often than possible */
2124 if (ev_at (w) < ev_rt_now)
2125 ev_at (w) = ev_rt_now;
2126 }
2127
2128 ANHE_at_cache (periodics [HEAP0]); 3620 ANHE_at_cache (periodics [HEAP0]);
2129 downheap (periodics, periodiccnt, HEAP0); 3621 downheap (periodics, periodiccnt, HEAP0);
2130 } 3622 }
2131 else 3623 else
2132 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3624 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2139 feed_reverse_done (EV_A_ EV_PERIODIC); 3631 feed_reverse_done (EV_A_ EV_PERIODIC);
2140 } 3632 }
2141} 3633}
2142 3634
2143/* simply recalculate all periodics */ 3635/* simply recalculate all periodics */
2144/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 3636/* TODO: maybe ensure that at least one event happens when jumping forward? */
2145static void noinline 3637ecb_noinline ecb_cold
3638static void
2146periodics_reschedule (EV_P) 3639periodics_reschedule (EV_P)
2147{ 3640{
2148 int i; 3641 int i;
2149 3642
2150 /* adjust periodics after time jump */ 3643 /* adjust periodics after time jump */
… …
2153 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3646 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2154 3647
2155 if (w->reschedule_cb) 3648 if (w->reschedule_cb)
2156 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3649 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2157 else if (w->interval) 3650 else if (w->interval)
2158 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3651 periodic_recalc (EV_A_ w);
2159 3652
2160 ANHE_at_cache (periodics [i]); 3653 ANHE_at_cache (periodics [i]);
2161 } 3654 }
2162 3655
2163 reheap (periodics, periodiccnt); 3656 reheap (periodics, periodiccnt);
2164} 3657}
2165#endif 3658#endif
2166 3659
2167/* adjust all timers by a given offset */ 3660/* adjust all timers by a given offset */
2168static void noinline 3661ecb_noinline ecb_cold
3662static void
2169timers_reschedule (EV_P_ ev_tstamp adjust) 3663timers_reschedule (EV_P_ ev_tstamp adjust)
2170{ 3664{
2171 int i; 3665 int i;
2172 3666
2173 for (i = 0; i < timercnt; ++i) 3667 for (i = 0; i < timercnt; ++i)
… …
2182/* also detect if there was a timejump, and act accordingly */ 3676/* also detect if there was a timejump, and act accordingly */
2183inline_speed void 3677inline_speed void
2184time_update (EV_P_ ev_tstamp max_block) 3678time_update (EV_P_ ev_tstamp max_block)
2185{ 3679{
2186#if EV_USE_MONOTONIC 3680#if EV_USE_MONOTONIC
2187 if (expect_true (have_monotonic)) 3681 if (ecb_expect_true (have_monotonic))
2188 { 3682 {
2189 int i; 3683 int i;
2190 ev_tstamp odiff = rtmn_diff; 3684 ev_tstamp odiff = rtmn_diff;
2191 3685
2192 mn_now = get_clock (); 3686 mn_now = get_clock ();
2193 3687
2194 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3688 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
2195 /* interpolate in the meantime */ 3689 /* interpolate in the meantime */
2196 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 3690 if (ecb_expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
2197 { 3691 {
2198 ev_rt_now = rtmn_diff + mn_now; 3692 ev_rt_now = rtmn_diff + mn_now;
2199 return; 3693 return;
2200 } 3694 }
2201 3695
… …
2210 * doesn't hurt either as we only do this on time-jumps or 3704 * doesn't hurt either as we only do this on time-jumps or
2211 * in the unlikely event of having been preempted here. 3705 * in the unlikely event of having been preempted here.
2212 */ 3706 */
2213 for (i = 4; --i; ) 3707 for (i = 4; --i; )
2214 { 3708 {
3709 ev_tstamp diff;
2215 rtmn_diff = ev_rt_now - mn_now; 3710 rtmn_diff = ev_rt_now - mn_now;
2216 3711
3712 diff = odiff - rtmn_diff;
3713
2217 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3714 if (ecb_expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2218 return; /* all is well */ 3715 return; /* all is well */
2219 3716
2220 ev_rt_now = ev_time (); 3717 ev_rt_now = ev_time ();
2221 mn_now = get_clock (); 3718 mn_now = get_clock ();
2222 now_floor = mn_now; 3719 now_floor = mn_now;
… …
2231 else 3728 else
2232#endif 3729#endif
2233 { 3730 {
2234 ev_rt_now = ev_time (); 3731 ev_rt_now = ev_time ();
2235 3732
2236 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 3733 if (ecb_expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
2237 { 3734 {
2238 /* adjust timers. this is easy, as the offset is the same for all of them */ 3735 /* adjust timers. this is easy, as the offset is the same for all of them */
2239 timers_reschedule (EV_A_ ev_rt_now - mn_now); 3736 timers_reschedule (EV_A_ ev_rt_now - mn_now);
2240#if EV_PERIODIC_ENABLE 3737#if EV_PERIODIC_ENABLE
2241 periodics_reschedule (EV_A); 3738 periodics_reschedule (EV_A);
… …
2244 3741
2245 mn_now = ev_rt_now; 3742 mn_now = ev_rt_now;
2246 } 3743 }
2247} 3744}
2248 3745
2249void 3746int
2250ev_loop (EV_P_ int flags) 3747ev_run (EV_P_ int flags)
2251{ 3748{
2252#if EV_MINIMAL < 2 3749#if EV_FEATURE_API
2253 ++loop_depth; 3750 ++loop_depth;
2254#endif 3751#endif
2255 3752
2256 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 3753 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2257 3754
2258 loop_done = EVUNLOOP_CANCEL; 3755 loop_done = EVBREAK_CANCEL;
2259 3756
2260 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 3757 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2261 3758
2262 do 3759 do
2263 { 3760 {
2264#if EV_VERIFY >= 2 3761#if EV_VERIFY >= 2
2265 ev_loop_verify (EV_A); 3762 ev_verify (EV_A);
2266#endif 3763#endif
2267 3764
2268#ifndef _WIN32 3765#ifndef _WIN32
2269 if (expect_false (curpid)) /* penalise the forking check even more */ 3766 if (ecb_expect_false (curpid)) /* penalise the forking check even more */
2270 if (expect_false (getpid () != curpid)) 3767 if (ecb_expect_false (getpid () != curpid))
2271 { 3768 {
2272 curpid = getpid (); 3769 curpid = getpid ();
2273 postfork = 1; 3770 postfork = 1;
2274 } 3771 }
2275#endif 3772#endif
2276 3773
2277#if EV_FORK_ENABLE 3774#if EV_FORK_ENABLE
2278 /* we might have forked, so queue fork handlers */ 3775 /* we might have forked, so queue fork handlers */
2279 if (expect_false (postfork)) 3776 if (ecb_expect_false (postfork))
2280 if (forkcnt) 3777 if (forkcnt)
2281 { 3778 {
2282 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3779 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2283 EV_INVOKE_PENDING; 3780 EV_INVOKE_PENDING;
2284 } 3781 }
2285#endif 3782#endif
2286 3783
3784#if EV_PREPARE_ENABLE
2287 /* queue prepare watchers (and execute them) */ 3785 /* queue prepare watchers (and execute them) */
2288 if (expect_false (preparecnt)) 3786 if (ecb_expect_false (preparecnt))
2289 { 3787 {
2290 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3788 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2291 EV_INVOKE_PENDING; 3789 EV_INVOKE_PENDING;
2292 } 3790 }
3791#endif
2293 3792
2294 if (expect_false (loop_done)) 3793 if (ecb_expect_false (loop_done))
2295 break; 3794 break;
2296 3795
2297 /* we might have forked, so reify kernel state if necessary */ 3796 /* we might have forked, so reify kernel state if necessary */
2298 if (expect_false (postfork)) 3797 if (ecb_expect_false (postfork))
2299 loop_fork (EV_A); 3798 loop_fork (EV_A);
2300 3799
2301 /* update fd-related kernel structures */ 3800 /* update fd-related kernel structures */
2302 fd_reify (EV_A); 3801 fd_reify (EV_A);
2303 3802
2304 /* calculate blocking time */ 3803 /* calculate blocking time */
2305 { 3804 {
2306 ev_tstamp waittime = 0.; 3805 ev_tstamp waittime = 0.;
2307 ev_tstamp sleeptime = 0.; 3806 ev_tstamp sleeptime = 0.;
2308 3807
3808 /* remember old timestamp for io_blocktime calculation */
3809 ev_tstamp prev_mn_now = mn_now;
3810
3811 /* update time to cancel out callback processing overhead */
3812 time_update (EV_A_ 1e100);
3813
3814 /* from now on, we want a pipe-wake-up */
3815 pipe_write_wanted = 1;
3816
3817 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3818
2309 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3819 if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2310 { 3820 {
2311 /* remember old timestamp for io_blocktime calculation */
2312 ev_tstamp prev_mn_now = mn_now;
2313
2314 /* update time to cancel out callback processing overhead */
2315 time_update (EV_A_ 1e100);
2316
2317 waittime = MAX_BLOCKTIME; 3821 waittime = MAX_BLOCKTIME;
2318 3822
2319 if (timercnt) 3823 if (timercnt)
2320 { 3824 {
2321 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3825 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2322 if (waittime > to) waittime = to; 3826 if (waittime > to) waittime = to;
2323 } 3827 }
2324 3828
2325#if EV_PERIODIC_ENABLE 3829#if EV_PERIODIC_ENABLE
2326 if (periodiccnt) 3830 if (periodiccnt)
2327 { 3831 {
2328 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3832 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2329 if (waittime > to) waittime = to; 3833 if (waittime > to) waittime = to;
2330 } 3834 }
2331#endif 3835#endif
2332 3836
2333 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3837 /* don't let timeouts decrease the waittime below timeout_blocktime */
2334 if (expect_false (waittime < timeout_blocktime)) 3838 if (ecb_expect_false (waittime < timeout_blocktime))
2335 waittime = timeout_blocktime; 3839 waittime = timeout_blocktime;
2336 3840
3841 /* at this point, we NEED to wait, so we have to ensure */
3842 /* to pass a minimum nonzero value to the backend */
3843 if (ecb_expect_false (waittime < backend_mintime))
3844 waittime = backend_mintime;
3845
2337 /* extra check because io_blocktime is commonly 0 */ 3846 /* extra check because io_blocktime is commonly 0 */
2338 if (expect_false (io_blocktime)) 3847 if (ecb_expect_false (io_blocktime))
2339 { 3848 {
2340 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3849 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2341 3850
2342 if (sleeptime > waittime - backend_fudge) 3851 if (sleeptime > waittime - backend_mintime)
2343 sleeptime = waittime - backend_fudge; 3852 sleeptime = waittime - backend_mintime;
2344 3853
2345 if (expect_true (sleeptime > 0.)) 3854 if (ecb_expect_true (sleeptime > 0.))
2346 { 3855 {
2347 ev_sleep (sleeptime); 3856 ev_sleep (sleeptime);
2348 waittime -= sleeptime; 3857 waittime -= sleeptime;
2349 } 3858 }
2350 } 3859 }
2351 } 3860 }
2352 3861
2353#if EV_MINIMAL < 2 3862#if EV_FEATURE_API
2354 ++loop_count; 3863 ++loop_count;
2355#endif 3864#endif
2356 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3865 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2357 backend_poll (EV_A_ waittime); 3866 backend_poll (EV_A_ waittime);
2358 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 3867 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3868
3869 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3870
3871 ECB_MEMORY_FENCE_ACQUIRE;
3872 if (pipe_write_skipped)
3873 {
3874 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3875 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3876 }
2359 3877
2360 /* update ev_rt_now, do magic */ 3878 /* update ev_rt_now, do magic */
2361 time_update (EV_A_ waittime + sleeptime); 3879 time_update (EV_A_ waittime + sleeptime);
2362 } 3880 }
2363 3881
… …
2370#if EV_IDLE_ENABLE 3888#if EV_IDLE_ENABLE
2371 /* queue idle watchers unless other events are pending */ 3889 /* queue idle watchers unless other events are pending */
2372 idle_reify (EV_A); 3890 idle_reify (EV_A);
2373#endif 3891#endif
2374 3892
3893#if EV_CHECK_ENABLE
2375 /* queue check watchers, to be executed first */ 3894 /* queue check watchers, to be executed first */
2376 if (expect_false (checkcnt)) 3895 if (ecb_expect_false (checkcnt))
2377 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3896 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3897#endif
2378 3898
2379 EV_INVOKE_PENDING; 3899 EV_INVOKE_PENDING;
2380 } 3900 }
2381 while (expect_true ( 3901 while (ecb_expect_true (
2382 activecnt 3902 activecnt
2383 && !loop_done 3903 && !loop_done
2384 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3904 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2385 )); 3905 ));
2386 3906
2387 if (loop_done == EVUNLOOP_ONE) 3907 if (loop_done == EVBREAK_ONE)
2388 loop_done = EVUNLOOP_CANCEL; 3908 loop_done = EVBREAK_CANCEL;
2389 3909
2390#if EV_MINIMAL < 2 3910#if EV_FEATURE_API
2391 --loop_depth; 3911 --loop_depth;
2392#endif 3912#endif
2393}
2394 3913
3914 return activecnt;
3915}
3916
2395void 3917void
2396ev_unloop (EV_P_ int how) 3918ev_break (EV_P_ int how) EV_NOEXCEPT
2397{ 3919{
2398 loop_done = how; 3920 loop_done = how;
2399} 3921}
2400 3922
2401void 3923void
2402ev_ref (EV_P) 3924ev_ref (EV_P) EV_NOEXCEPT
2403{ 3925{
2404 ++activecnt; 3926 ++activecnt;
2405} 3927}
2406 3928
2407void 3929void
2408ev_unref (EV_P) 3930ev_unref (EV_P) EV_NOEXCEPT
2409{ 3931{
2410 --activecnt; 3932 --activecnt;
2411} 3933}
2412 3934
2413void 3935void
2414ev_now_update (EV_P) 3936ev_now_update (EV_P) EV_NOEXCEPT
2415{ 3937{
2416 time_update (EV_A_ 1e100); 3938 time_update (EV_A_ 1e100);
2417} 3939}
2418 3940
2419void 3941void
2420ev_suspend (EV_P) 3942ev_suspend (EV_P) EV_NOEXCEPT
2421{ 3943{
2422 ev_now_update (EV_A); 3944 ev_now_update (EV_A);
2423} 3945}
2424 3946
2425void 3947void
2426ev_resume (EV_P) 3948ev_resume (EV_P) EV_NOEXCEPT
2427{ 3949{
2428 ev_tstamp mn_prev = mn_now; 3950 ev_tstamp mn_prev = mn_now;
2429 3951
2430 ev_now_update (EV_A); 3952 ev_now_update (EV_A);
2431 timers_reschedule (EV_A_ mn_now - mn_prev); 3953 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2448inline_size void 3970inline_size void
2449wlist_del (WL *head, WL elem) 3971wlist_del (WL *head, WL elem)
2450{ 3972{
2451 while (*head) 3973 while (*head)
2452 { 3974 {
2453 if (expect_true (*head == elem)) 3975 if (ecb_expect_true (*head == elem))
2454 { 3976 {
2455 *head = elem->next; 3977 *head = elem->next;
2456 break; 3978 break;
2457 } 3979 }
2458 3980
… …
2470 w->pending = 0; 3992 w->pending = 0;
2471 } 3993 }
2472} 3994}
2473 3995
2474int 3996int
2475ev_clear_pending (EV_P_ void *w) 3997ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
2476{ 3998{
2477 W w_ = (W)w; 3999 W w_ = (W)w;
2478 int pending = w_->pending; 4000 int pending = w_->pending;
2479 4001
2480 if (expect_true (pending)) 4002 if (ecb_expect_true (pending))
2481 { 4003 {
2482 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 4004 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2483 p->w = (W)&pending_w; 4005 p->w = (W)&pending_w;
2484 w_->pending = 0; 4006 w_->pending = 0;
2485 return p->events; 4007 return p->events;
… …
2512 w->active = 0; 4034 w->active = 0;
2513} 4035}
2514 4036
2515/*****************************************************************************/ 4037/*****************************************************************************/
2516 4038
2517void noinline 4039ecb_noinline
4040void
2518ev_io_start (EV_P_ ev_io *w) 4041ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
2519{ 4042{
2520 int fd = w->fd; 4043 int fd = w->fd;
2521 4044
2522 if (expect_false (ev_is_active (w))) 4045 if (ecb_expect_false (ev_is_active (w)))
2523 return; 4046 return;
2524 4047
2525 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 4048 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2526 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 4049 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2527 4050
4051#if EV_VERIFY >= 2
4052 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
4053#endif
2528 EV_FREQUENT_CHECK; 4054 EV_FREQUENT_CHECK;
2529 4055
2530 ev_start (EV_A_ (W)w, 1); 4056 ev_start (EV_A_ (W)w, 1);
2531 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 4057 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
2532 wlist_add (&anfds[fd].head, (WL)w); 4058 wlist_add (&anfds[fd].head, (WL)w);
4059
4060 /* common bug, apparently */
4061 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
2533 4062
2534 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 4063 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2535 w->events &= ~EV__IOFDSET; 4064 w->events &= ~EV__IOFDSET;
2536 4065
2537 EV_FREQUENT_CHECK; 4066 EV_FREQUENT_CHECK;
2538} 4067}
2539 4068
2540void noinline 4069ecb_noinline
4070void
2541ev_io_stop (EV_P_ ev_io *w) 4071ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
2542{ 4072{
2543 clear_pending (EV_A_ (W)w); 4073 clear_pending (EV_A_ (W)w);
2544 if (expect_false (!ev_is_active (w))) 4074 if (ecb_expect_false (!ev_is_active (w)))
2545 return; 4075 return;
2546 4076
2547 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 4077 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2548 4078
4079#if EV_VERIFY >= 2
4080 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
4081#endif
2549 EV_FREQUENT_CHECK; 4082 EV_FREQUENT_CHECK;
2550 4083
2551 wlist_del (&anfds[w->fd].head, (WL)w); 4084 wlist_del (&anfds[w->fd].head, (WL)w);
2552 ev_stop (EV_A_ (W)w); 4085 ev_stop (EV_A_ (W)w);
2553 4086
2554 fd_change (EV_A_ w->fd, 1); 4087 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2555 4088
2556 EV_FREQUENT_CHECK; 4089 EV_FREQUENT_CHECK;
2557} 4090}
2558 4091
2559void noinline 4092ecb_noinline
4093void
2560ev_timer_start (EV_P_ ev_timer *w) 4094ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
2561{ 4095{
2562 if (expect_false (ev_is_active (w))) 4096 if (ecb_expect_false (ev_is_active (w)))
2563 return; 4097 return;
2564 4098
2565 ev_at (w) += mn_now; 4099 ev_at (w) += mn_now;
2566 4100
2567 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 4101 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2568 4102
2569 EV_FREQUENT_CHECK; 4103 EV_FREQUENT_CHECK;
2570 4104
2571 ++timercnt; 4105 ++timercnt;
2572 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 4106 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
2573 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 4107 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
2574 ANHE_w (timers [ev_active (w)]) = (WT)w; 4108 ANHE_w (timers [ev_active (w)]) = (WT)w;
2575 ANHE_at_cache (timers [ev_active (w)]); 4109 ANHE_at_cache (timers [ev_active (w)]);
2576 upheap (timers, ev_active (w)); 4110 upheap (timers, ev_active (w));
2577 4111
2578 EV_FREQUENT_CHECK; 4112 EV_FREQUENT_CHECK;
2579 4113
2580 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 4114 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2581} 4115}
2582 4116
2583void noinline 4117ecb_noinline
4118void
2584ev_timer_stop (EV_P_ ev_timer *w) 4119ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
2585{ 4120{
2586 clear_pending (EV_A_ (W)w); 4121 clear_pending (EV_A_ (W)w);
2587 if (expect_false (!ev_is_active (w))) 4122 if (ecb_expect_false (!ev_is_active (w)))
2588 return; 4123 return;
2589 4124
2590 EV_FREQUENT_CHECK; 4125 EV_FREQUENT_CHECK;
2591 4126
2592 { 4127 {
… …
2594 4129
2595 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 4130 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2596 4131
2597 --timercnt; 4132 --timercnt;
2598 4133
2599 if (expect_true (active < timercnt + HEAP0)) 4134 if (ecb_expect_true (active < timercnt + HEAP0))
2600 { 4135 {
2601 timers [active] = timers [timercnt + HEAP0]; 4136 timers [active] = timers [timercnt + HEAP0];
2602 adjustheap (timers, timercnt, active); 4137 adjustheap (timers, timercnt, active);
2603 } 4138 }
2604 } 4139 }
… …
2608 ev_stop (EV_A_ (W)w); 4143 ev_stop (EV_A_ (W)w);
2609 4144
2610 EV_FREQUENT_CHECK; 4145 EV_FREQUENT_CHECK;
2611} 4146}
2612 4147
2613void noinline 4148ecb_noinline
4149void
2614ev_timer_again (EV_P_ ev_timer *w) 4150ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
2615{ 4151{
2616 EV_FREQUENT_CHECK; 4152 EV_FREQUENT_CHECK;
4153
4154 clear_pending (EV_A_ (W)w);
2617 4155
2618 if (ev_is_active (w)) 4156 if (ev_is_active (w))
2619 { 4157 {
2620 if (w->repeat) 4158 if (w->repeat)
2621 { 4159 {
… …
2634 4172
2635 EV_FREQUENT_CHECK; 4173 EV_FREQUENT_CHECK;
2636} 4174}
2637 4175
2638ev_tstamp 4176ev_tstamp
2639ev_timer_remaining (EV_P_ ev_timer *w) 4177ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
2640{ 4178{
2641 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4179 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2642} 4180}
2643 4181
2644#if EV_PERIODIC_ENABLE 4182#if EV_PERIODIC_ENABLE
2645void noinline 4183ecb_noinline
4184void
2646ev_periodic_start (EV_P_ ev_periodic *w) 4185ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
2647{ 4186{
2648 if (expect_false (ev_is_active (w))) 4187 if (ecb_expect_false (ev_is_active (w)))
2649 return; 4188 return;
2650 4189
2651 if (w->reschedule_cb) 4190 if (w->reschedule_cb)
2652 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4191 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2653 else if (w->interval) 4192 else if (w->interval)
2654 { 4193 {
2655 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 4194 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2656 /* this formula differs from the one in periodic_reify because we do not always round up */ 4195 periodic_recalc (EV_A_ w);
2657 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2658 } 4196 }
2659 else 4197 else
2660 ev_at (w) = w->offset; 4198 ev_at (w) = w->offset;
2661 4199
2662 EV_FREQUENT_CHECK; 4200 EV_FREQUENT_CHECK;
2663 4201
2664 ++periodiccnt; 4202 ++periodiccnt;
2665 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4203 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2666 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4204 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
2667 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4205 ANHE_w (periodics [ev_active (w)]) = (WT)w;
2668 ANHE_at_cache (periodics [ev_active (w)]); 4206 ANHE_at_cache (periodics [ev_active (w)]);
2669 upheap (periodics, ev_active (w)); 4207 upheap (periodics, ev_active (w));
2670 4208
2671 EV_FREQUENT_CHECK; 4209 EV_FREQUENT_CHECK;
2672 4210
2673 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4211 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2674} 4212}
2675 4213
2676void noinline 4214ecb_noinline
4215void
2677ev_periodic_stop (EV_P_ ev_periodic *w) 4216ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
2678{ 4217{
2679 clear_pending (EV_A_ (W)w); 4218 clear_pending (EV_A_ (W)w);
2680 if (expect_false (!ev_is_active (w))) 4219 if (ecb_expect_false (!ev_is_active (w)))
2681 return; 4220 return;
2682 4221
2683 EV_FREQUENT_CHECK; 4222 EV_FREQUENT_CHECK;
2684 4223
2685 { 4224 {
… …
2687 4226
2688 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 4227 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2689 4228
2690 --periodiccnt; 4229 --periodiccnt;
2691 4230
2692 if (expect_true (active < periodiccnt + HEAP0)) 4231 if (ecb_expect_true (active < periodiccnt + HEAP0))
2693 { 4232 {
2694 periodics [active] = periodics [periodiccnt + HEAP0]; 4233 periodics [active] = periodics [periodiccnt + HEAP0];
2695 adjustheap (periodics, periodiccnt, active); 4234 adjustheap (periodics, periodiccnt, active);
2696 } 4235 }
2697 } 4236 }
… …
2699 ev_stop (EV_A_ (W)w); 4238 ev_stop (EV_A_ (W)w);
2700 4239
2701 EV_FREQUENT_CHECK; 4240 EV_FREQUENT_CHECK;
2702} 4241}
2703 4242
2704void noinline 4243ecb_noinline
4244void
2705ev_periodic_again (EV_P_ ev_periodic *w) 4245ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
2706{ 4246{
2707 /* TODO: use adjustheap and recalculation */ 4247 /* TODO: use adjustheap and recalculation */
2708 ev_periodic_stop (EV_A_ w); 4248 ev_periodic_stop (EV_A_ w);
2709 ev_periodic_start (EV_A_ w); 4249 ev_periodic_start (EV_A_ w);
2710} 4250}
… …
2712 4252
2713#ifndef SA_RESTART 4253#ifndef SA_RESTART
2714# define SA_RESTART 0 4254# define SA_RESTART 0
2715#endif 4255#endif
2716 4256
2717void noinline 4257#if EV_SIGNAL_ENABLE
4258
4259ecb_noinline
4260void
2718ev_signal_start (EV_P_ ev_signal *w) 4261ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
2719{ 4262{
2720 if (expect_false (ev_is_active (w))) 4263 if (ecb_expect_false (ev_is_active (w)))
2721 return; 4264 return;
2722 4265
2723 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4266 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2724 4267
2725#if EV_MULTIPLICITY 4268#if EV_MULTIPLICITY
2726 assert (("libev: a signal must not be attached to two different loops", 4269 assert (("libev: a signal must not be attached to two different loops",
2727 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4270 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2728 4271
2729 signals [w->signum - 1].loop = EV_A; 4272 signals [w->signum - 1].loop = EV_A;
4273 ECB_MEMORY_FENCE_RELEASE;
2730#endif 4274#endif
2731 4275
2732 EV_FREQUENT_CHECK; 4276 EV_FREQUENT_CHECK;
2733 4277
2734#if EV_USE_SIGNALFD 4278#if EV_USE_SIGNALFD
… …
2781 sa.sa_handler = ev_sighandler; 4325 sa.sa_handler = ev_sighandler;
2782 sigfillset (&sa.sa_mask); 4326 sigfillset (&sa.sa_mask);
2783 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 4327 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2784 sigaction (w->signum, &sa, 0); 4328 sigaction (w->signum, &sa, 0);
2785 4329
4330 if (origflags & EVFLAG_NOSIGMASK)
4331 {
2786 sigemptyset (&sa.sa_mask); 4332 sigemptyset (&sa.sa_mask);
2787 sigaddset (&sa.sa_mask, w->signum); 4333 sigaddset (&sa.sa_mask, w->signum);
2788 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 4334 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
4335 }
2789#endif 4336#endif
2790 } 4337 }
2791 4338
2792 EV_FREQUENT_CHECK; 4339 EV_FREQUENT_CHECK;
2793} 4340}
2794 4341
2795void noinline 4342ecb_noinline
4343void
2796ev_signal_stop (EV_P_ ev_signal *w) 4344ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
2797{ 4345{
2798 clear_pending (EV_A_ (W)w); 4346 clear_pending (EV_A_ (W)w);
2799 if (expect_false (!ev_is_active (w))) 4347 if (ecb_expect_false (!ev_is_active (w)))
2800 return; 4348 return;
2801 4349
2802 EV_FREQUENT_CHECK; 4350 EV_FREQUENT_CHECK;
2803 4351
2804 wlist_del (&signals [w->signum - 1].head, (WL)w); 4352 wlist_del (&signals [w->signum - 1].head, (WL)w);
… …
2827 } 4375 }
2828 4376
2829 EV_FREQUENT_CHECK; 4377 EV_FREQUENT_CHECK;
2830} 4378}
2831 4379
4380#endif
4381
4382#if EV_CHILD_ENABLE
4383
2832void 4384void
2833ev_child_start (EV_P_ ev_child *w) 4385ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
2834{ 4386{
2835#if EV_MULTIPLICITY 4387#if EV_MULTIPLICITY
2836 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4388 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2837#endif 4389#endif
2838 if (expect_false (ev_is_active (w))) 4390 if (ecb_expect_false (ev_is_active (w)))
2839 return; 4391 return;
2840 4392
2841 EV_FREQUENT_CHECK; 4393 EV_FREQUENT_CHECK;
2842 4394
2843 ev_start (EV_A_ (W)w, 1); 4395 ev_start (EV_A_ (W)w, 1);
2844 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4396 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2845 4397
2846 EV_FREQUENT_CHECK; 4398 EV_FREQUENT_CHECK;
2847} 4399}
2848 4400
2849void 4401void
2850ev_child_stop (EV_P_ ev_child *w) 4402ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
2851{ 4403{
2852 clear_pending (EV_A_ (W)w); 4404 clear_pending (EV_A_ (W)w);
2853 if (expect_false (!ev_is_active (w))) 4405 if (ecb_expect_false (!ev_is_active (w)))
2854 return; 4406 return;
2855 4407
2856 EV_FREQUENT_CHECK; 4408 EV_FREQUENT_CHECK;
2857 4409
2858 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4410 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2859 ev_stop (EV_A_ (W)w); 4411 ev_stop (EV_A_ (W)w);
2860 4412
2861 EV_FREQUENT_CHECK; 4413 EV_FREQUENT_CHECK;
2862} 4414}
4415
4416#endif
2863 4417
2864#if EV_STAT_ENABLE 4418#if EV_STAT_ENABLE
2865 4419
2866# ifdef _WIN32 4420# ifdef _WIN32
2867# undef lstat 4421# undef lstat
… …
2870 4424
2871#define DEF_STAT_INTERVAL 5.0074891 4425#define DEF_STAT_INTERVAL 5.0074891
2872#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4426#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2873#define MIN_STAT_INTERVAL 0.1074891 4427#define MIN_STAT_INTERVAL 0.1074891
2874 4428
2875static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4429ecb_noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2876 4430
2877#if EV_USE_INOTIFY 4431#if EV_USE_INOTIFY
2878 4432
2879/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ 4433/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
2880# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4434# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2881 4435
2882static void noinline 4436ecb_noinline
4437static void
2883infy_add (EV_P_ ev_stat *w) 4438infy_add (EV_P_ ev_stat *w)
2884{ 4439{
2885 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); 4440 w->wd = inotify_add_watch (fs_fd, w->path,
4441 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4442 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4443 | IN_DONT_FOLLOW | IN_MASK_ADD);
2886 4444
2887 if (w->wd >= 0) 4445 if (w->wd >= 0)
2888 { 4446 {
2889 struct statfs sfs; 4447 struct statfs sfs;
2890 4448
… …
2894 4452
2895 if (!fs_2625) 4453 if (!fs_2625)
2896 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4454 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2897 else if (!statfs (w->path, &sfs) 4455 else if (!statfs (w->path, &sfs)
2898 && (sfs.f_type == 0x1373 /* devfs */ 4456 && (sfs.f_type == 0x1373 /* devfs */
4457 || sfs.f_type == 0x4006 /* fat */
4458 || sfs.f_type == 0x4d44 /* msdos */
2899 || sfs.f_type == 0xEF53 /* ext2/3 */ 4459 || sfs.f_type == 0xEF53 /* ext2/3 */
4460 || sfs.f_type == 0x72b6 /* jffs2 */
4461 || sfs.f_type == 0x858458f6 /* ramfs */
4462 || sfs.f_type == 0x5346544e /* ntfs */
2900 || sfs.f_type == 0x3153464a /* jfs */ 4463 || sfs.f_type == 0x3153464a /* jfs */
4464 || sfs.f_type == 0x9123683e /* btrfs */
2901 || sfs.f_type == 0x52654973 /* reiser3 */ 4465 || sfs.f_type == 0x52654973 /* reiser3 */
2902 || sfs.f_type == 0x01021994 /* tempfs */ 4466 || sfs.f_type == 0x01021994 /* tmpfs */
2903 || sfs.f_type == 0x58465342 /* xfs */)) 4467 || sfs.f_type == 0x58465342 /* xfs */))
2904 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4468 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
2905 else 4469 else
2906 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4470 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2907 } 4471 }
… …
2928 if (!pend || pend == path) 4492 if (!pend || pend == path)
2929 break; 4493 break;
2930 4494
2931 *pend = 0; 4495 *pend = 0;
2932 w->wd = inotify_add_watch (fs_fd, path, mask); 4496 w->wd = inotify_add_watch (fs_fd, path, mask);
2933 } 4497 }
2934 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 4498 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2935 } 4499 }
2936 } 4500 }
2937 4501
2938 if (w->wd >= 0) 4502 if (w->wd >= 0)
2939 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4503 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2940 4504
2941 /* now re-arm timer, if required */ 4505 /* now re-arm timer, if required */
2942 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4506 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2943 ev_timer_again (EV_A_ &w->timer); 4507 ev_timer_again (EV_A_ &w->timer);
2944 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4508 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2945} 4509}
2946 4510
2947static void noinline 4511ecb_noinline
4512static void
2948infy_del (EV_P_ ev_stat *w) 4513infy_del (EV_P_ ev_stat *w)
2949{ 4514{
2950 int slot; 4515 int slot;
2951 int wd = w->wd; 4516 int wd = w->wd;
2952 4517
2953 if (wd < 0) 4518 if (wd < 0)
2954 return; 4519 return;
2955 4520
2956 w->wd = -2; 4521 w->wd = -2;
2957 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 4522 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2958 wlist_del (&fs_hash [slot].head, (WL)w); 4523 wlist_del (&fs_hash [slot].head, (WL)w);
2959 4524
2960 /* remove this watcher, if others are watching it, they will rearm */ 4525 /* remove this watcher, if others are watching it, they will rearm */
2961 inotify_rm_watch (fs_fd, wd); 4526 inotify_rm_watch (fs_fd, wd);
2962} 4527}
2963 4528
2964static void noinline 4529ecb_noinline
4530static void
2965infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4531infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2966{ 4532{
2967 if (slot < 0) 4533 if (slot < 0)
2968 /* overflow, need to check for all hash slots */ 4534 /* overflow, need to check for all hash slots */
2969 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4535 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2970 infy_wd (EV_A_ slot, wd, ev); 4536 infy_wd (EV_A_ slot, wd, ev);
2971 else 4537 else
2972 { 4538 {
2973 WL w_; 4539 WL w_;
2974 4540
2975 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 4541 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2976 { 4542 {
2977 ev_stat *w = (ev_stat *)w_; 4543 ev_stat *w = (ev_stat *)w_;
2978 w_ = w_->next; /* lets us remove this watcher and all before it */ 4544 w_ = w_->next; /* lets us remove this watcher and all before it */
2979 4545
2980 if (w->wd == wd || wd == -1) 4546 if (w->wd == wd || wd == -1)
2981 { 4547 {
2982 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 4548 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2983 { 4549 {
2984 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4550 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2985 w->wd = -1; 4551 w->wd = -1;
2986 infy_add (EV_A_ w); /* re-add, no matter what */ 4552 infy_add (EV_A_ w); /* re-add, no matter what */
2987 } 4553 }
2988 4554
2989 stat_timer_cb (EV_A_ &w->timer, 0); 4555 stat_timer_cb (EV_A_ &w->timer, 0);
… …
3005 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4571 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3006 ofs += sizeof (struct inotify_event) + ev->len; 4572 ofs += sizeof (struct inotify_event) + ev->len;
3007 } 4573 }
3008} 4574}
3009 4575
3010inline_size unsigned int
3011ev_linux_version (void)
3012{
3013 struct utsname buf;
3014 unsigned int v;
3015 int i;
3016 char *p = buf.release;
3017
3018 if (uname (&buf))
3019 return 0;
3020
3021 for (i = 3+1; --i; )
3022 {
3023 unsigned int c = 0;
3024
3025 for (;;)
3026 {
3027 if (*p >= '0' && *p <= '9')
3028 c = c * 10 + *p++ - '0';
3029 else
3030 {
3031 p += *p == '.';
3032 break;
3033 }
3034 }
3035
3036 v = (v << 8) | c;
3037 }
3038
3039 return v;
3040}
3041
3042inline_size void 4576inline_size ecb_cold
4577void
3043ev_check_2625 (EV_P) 4578ev_check_2625 (EV_P)
3044{ 4579{
3045 /* kernels < 2.6.25 are borked 4580 /* kernels < 2.6.25 are borked
3046 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4581 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3047 */ 4582 */
… …
3052} 4587}
3053 4588
3054inline_size int 4589inline_size int
3055infy_newfd (void) 4590infy_newfd (void)
3056{ 4591{
3057#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4592#if defined IN_CLOEXEC && defined IN_NONBLOCK
3058 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4593 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3059 if (fd >= 0) 4594 if (fd >= 0)
3060 return fd; 4595 return fd;
3061#endif 4596#endif
3062 return inotify_init (); 4597 return inotify_init ();
… …
3103 ev_io_set (&fs_w, fs_fd, EV_READ); 4638 ev_io_set (&fs_w, fs_fd, EV_READ);
3104 ev_io_start (EV_A_ &fs_w); 4639 ev_io_start (EV_A_ &fs_w);
3105 ev_unref (EV_A); 4640 ev_unref (EV_A);
3106 } 4641 }
3107 4642
3108 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4643 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
3109 { 4644 {
3110 WL w_ = fs_hash [slot].head; 4645 WL w_ = fs_hash [slot].head;
3111 fs_hash [slot].head = 0; 4646 fs_hash [slot].head = 0;
3112 4647
3113 while (w_) 4648 while (w_)
… …
3137#else 4672#else
3138# define EV_LSTAT(p,b) lstat (p, b) 4673# define EV_LSTAT(p,b) lstat (p, b)
3139#endif 4674#endif
3140 4675
3141void 4676void
3142ev_stat_stat (EV_P_ ev_stat *w) 4677ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
3143{ 4678{
3144 if (lstat (w->path, &w->attr) < 0) 4679 if (lstat (w->path, &w->attr) < 0)
3145 w->attr.st_nlink = 0; 4680 w->attr.st_nlink = 0;
3146 else if (!w->attr.st_nlink) 4681 else if (!w->attr.st_nlink)
3147 w->attr.st_nlink = 1; 4682 w->attr.st_nlink = 1;
3148} 4683}
3149 4684
3150static void noinline 4685ecb_noinline
4686static void
3151stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4687stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3152{ 4688{
3153 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4689 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3154 4690
3155 ev_statdata prev = w->attr; 4691 ev_statdata prev = w->attr;
… …
3186 ev_feed_event (EV_A_ w, EV_STAT); 4722 ev_feed_event (EV_A_ w, EV_STAT);
3187 } 4723 }
3188} 4724}
3189 4725
3190void 4726void
3191ev_stat_start (EV_P_ ev_stat *w) 4727ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
3192{ 4728{
3193 if (expect_false (ev_is_active (w))) 4729 if (ecb_expect_false (ev_is_active (w)))
3194 return; 4730 return;
3195 4731
3196 ev_stat_stat (EV_A_ w); 4732 ev_stat_stat (EV_A_ w);
3197 4733
3198 if (w->interval < MIN_STAT_INTERVAL && w->interval) 4734 if (w->interval < MIN_STAT_INTERVAL && w->interval)
… …
3217 4753
3218 EV_FREQUENT_CHECK; 4754 EV_FREQUENT_CHECK;
3219} 4755}
3220 4756
3221void 4757void
3222ev_stat_stop (EV_P_ ev_stat *w) 4758ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
3223{ 4759{
3224 clear_pending (EV_A_ (W)w); 4760 clear_pending (EV_A_ (W)w);
3225 if (expect_false (!ev_is_active (w))) 4761 if (ecb_expect_false (!ev_is_active (w)))
3226 return; 4762 return;
3227 4763
3228 EV_FREQUENT_CHECK; 4764 EV_FREQUENT_CHECK;
3229 4765
3230#if EV_USE_INOTIFY 4766#if EV_USE_INOTIFY
… …
3243} 4779}
3244#endif 4780#endif
3245 4781
3246#if EV_IDLE_ENABLE 4782#if EV_IDLE_ENABLE
3247void 4783void
3248ev_idle_start (EV_P_ ev_idle *w) 4784ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
3249{ 4785{
3250 if (expect_false (ev_is_active (w))) 4786 if (ecb_expect_false (ev_is_active (w)))
3251 return; 4787 return;
3252 4788
3253 pri_adjust (EV_A_ (W)w); 4789 pri_adjust (EV_A_ (W)w);
3254 4790
3255 EV_FREQUENT_CHECK; 4791 EV_FREQUENT_CHECK;
… …
3258 int active = ++idlecnt [ABSPRI (w)]; 4794 int active = ++idlecnt [ABSPRI (w)];
3259 4795
3260 ++idleall; 4796 ++idleall;
3261 ev_start (EV_A_ (W)w, active); 4797 ev_start (EV_A_ (W)w, active);
3262 4798
3263 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 4799 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
3264 idles [ABSPRI (w)][active - 1] = w; 4800 idles [ABSPRI (w)][active - 1] = w;
3265 } 4801 }
3266 4802
3267 EV_FREQUENT_CHECK; 4803 EV_FREQUENT_CHECK;
3268} 4804}
3269 4805
3270void 4806void
3271ev_idle_stop (EV_P_ ev_idle *w) 4807ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
3272{ 4808{
3273 clear_pending (EV_A_ (W)w); 4809 clear_pending (EV_A_ (W)w);
3274 if (expect_false (!ev_is_active (w))) 4810 if (ecb_expect_false (!ev_is_active (w)))
3275 return; 4811 return;
3276 4812
3277 EV_FREQUENT_CHECK; 4813 EV_FREQUENT_CHECK;
3278 4814
3279 { 4815 {
… …
3288 4824
3289 EV_FREQUENT_CHECK; 4825 EV_FREQUENT_CHECK;
3290} 4826}
3291#endif 4827#endif
3292 4828
4829#if EV_PREPARE_ENABLE
3293void 4830void
3294ev_prepare_start (EV_P_ ev_prepare *w) 4831ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
3295{ 4832{
3296 if (expect_false (ev_is_active (w))) 4833 if (ecb_expect_false (ev_is_active (w)))
3297 return; 4834 return;
3298 4835
3299 EV_FREQUENT_CHECK; 4836 EV_FREQUENT_CHECK;
3300 4837
3301 ev_start (EV_A_ (W)w, ++preparecnt); 4838 ev_start (EV_A_ (W)w, ++preparecnt);
3302 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4839 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
3303 prepares [preparecnt - 1] = w; 4840 prepares [preparecnt - 1] = w;
3304 4841
3305 EV_FREQUENT_CHECK; 4842 EV_FREQUENT_CHECK;
3306} 4843}
3307 4844
3308void 4845void
3309ev_prepare_stop (EV_P_ ev_prepare *w) 4846ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
3310{ 4847{
3311 clear_pending (EV_A_ (W)w); 4848 clear_pending (EV_A_ (W)w);
3312 if (expect_false (!ev_is_active (w))) 4849 if (ecb_expect_false (!ev_is_active (w)))
3313 return; 4850 return;
3314 4851
3315 EV_FREQUENT_CHECK; 4852 EV_FREQUENT_CHECK;
3316 4853
3317 { 4854 {
… …
3323 4860
3324 ev_stop (EV_A_ (W)w); 4861 ev_stop (EV_A_ (W)w);
3325 4862
3326 EV_FREQUENT_CHECK; 4863 EV_FREQUENT_CHECK;
3327} 4864}
4865#endif
3328 4866
4867#if EV_CHECK_ENABLE
3329void 4868void
3330ev_check_start (EV_P_ ev_check *w) 4869ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
3331{ 4870{
3332 if (expect_false (ev_is_active (w))) 4871 if (ecb_expect_false (ev_is_active (w)))
3333 return; 4872 return;
3334 4873
3335 EV_FREQUENT_CHECK; 4874 EV_FREQUENT_CHECK;
3336 4875
3337 ev_start (EV_A_ (W)w, ++checkcnt); 4876 ev_start (EV_A_ (W)w, ++checkcnt);
3338 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 4877 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
3339 checks [checkcnt - 1] = w; 4878 checks [checkcnt - 1] = w;
3340 4879
3341 EV_FREQUENT_CHECK; 4880 EV_FREQUENT_CHECK;
3342} 4881}
3343 4882
3344void 4883void
3345ev_check_stop (EV_P_ ev_check *w) 4884ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
3346{ 4885{
3347 clear_pending (EV_A_ (W)w); 4886 clear_pending (EV_A_ (W)w);
3348 if (expect_false (!ev_is_active (w))) 4887 if (ecb_expect_false (!ev_is_active (w)))
3349 return; 4888 return;
3350 4889
3351 EV_FREQUENT_CHECK; 4890 EV_FREQUENT_CHECK;
3352 4891
3353 { 4892 {
… …
3359 4898
3360 ev_stop (EV_A_ (W)w); 4899 ev_stop (EV_A_ (W)w);
3361 4900
3362 EV_FREQUENT_CHECK; 4901 EV_FREQUENT_CHECK;
3363} 4902}
4903#endif
3364 4904
3365#if EV_EMBED_ENABLE 4905#if EV_EMBED_ENABLE
3366void noinline 4906ecb_noinline
4907void
3367ev_embed_sweep (EV_P_ ev_embed *w) 4908ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
3368{ 4909{
3369 ev_loop (w->other, EVLOOP_NONBLOCK); 4910 ev_run (w->other, EVRUN_NOWAIT);
3370} 4911}
3371 4912
3372static void 4913static void
3373embed_io_cb (EV_P_ ev_io *io, int revents) 4914embed_io_cb (EV_P_ ev_io *io, int revents)
3374{ 4915{
3375 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4916 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3376 4917
3377 if (ev_cb (w)) 4918 if (ev_cb (w))
3378 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4919 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3379 else 4920 else
3380 ev_loop (w->other, EVLOOP_NONBLOCK); 4921 ev_run (w->other, EVRUN_NOWAIT);
3381} 4922}
3382 4923
3383static void 4924static void
3384embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4925embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3385{ 4926{
… …
3389 EV_P = w->other; 4930 EV_P = w->other;
3390 4931
3391 while (fdchangecnt) 4932 while (fdchangecnt)
3392 { 4933 {
3393 fd_reify (EV_A); 4934 fd_reify (EV_A);
3394 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4935 ev_run (EV_A_ EVRUN_NOWAIT);
3395 } 4936 }
3396 } 4937 }
3397} 4938}
3398 4939
3399static void 4940static void
… …
3405 4946
3406 { 4947 {
3407 EV_P = w->other; 4948 EV_P = w->other;
3408 4949
3409 ev_loop_fork (EV_A); 4950 ev_loop_fork (EV_A);
3410 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4951 ev_run (EV_A_ EVRUN_NOWAIT);
3411 } 4952 }
3412 4953
3413 ev_embed_start (EV_A_ w); 4954 ev_embed_start (EV_A_ w);
3414} 4955}
3415 4956
… …
3420 ev_idle_stop (EV_A_ idle); 4961 ev_idle_stop (EV_A_ idle);
3421} 4962}
3422#endif 4963#endif
3423 4964
3424void 4965void
3425ev_embed_start (EV_P_ ev_embed *w) 4966ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
3426{ 4967{
3427 if (expect_false (ev_is_active (w))) 4968 if (ecb_expect_false (ev_is_active (w)))
3428 return; 4969 return;
3429 4970
3430 { 4971 {
3431 EV_P = w->other; 4972 EV_P = w->other;
3432 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4973 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
… …
3451 4992
3452 EV_FREQUENT_CHECK; 4993 EV_FREQUENT_CHECK;
3453} 4994}
3454 4995
3455void 4996void
3456ev_embed_stop (EV_P_ ev_embed *w) 4997ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
3457{ 4998{
3458 clear_pending (EV_A_ (W)w); 4999 clear_pending (EV_A_ (W)w);
3459 if (expect_false (!ev_is_active (w))) 5000 if (ecb_expect_false (!ev_is_active (w)))
3460 return; 5001 return;
3461 5002
3462 EV_FREQUENT_CHECK; 5003 EV_FREQUENT_CHECK;
3463 5004
3464 ev_io_stop (EV_A_ &w->io); 5005 ev_io_stop (EV_A_ &w->io);
… …
3471} 5012}
3472#endif 5013#endif
3473 5014
3474#if EV_FORK_ENABLE 5015#if EV_FORK_ENABLE
3475void 5016void
3476ev_fork_start (EV_P_ ev_fork *w) 5017ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
3477{ 5018{
3478 if (expect_false (ev_is_active (w))) 5019 if (ecb_expect_false (ev_is_active (w)))
3479 return; 5020 return;
3480 5021
3481 EV_FREQUENT_CHECK; 5022 EV_FREQUENT_CHECK;
3482 5023
3483 ev_start (EV_A_ (W)w, ++forkcnt); 5024 ev_start (EV_A_ (W)w, ++forkcnt);
3484 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 5025 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
3485 forks [forkcnt - 1] = w; 5026 forks [forkcnt - 1] = w;
3486 5027
3487 EV_FREQUENT_CHECK; 5028 EV_FREQUENT_CHECK;
3488} 5029}
3489 5030
3490void 5031void
3491ev_fork_stop (EV_P_ ev_fork *w) 5032ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
3492{ 5033{
3493 clear_pending (EV_A_ (W)w); 5034 clear_pending (EV_A_ (W)w);
3494 if (expect_false (!ev_is_active (w))) 5035 if (ecb_expect_false (!ev_is_active (w)))
3495 return; 5036 return;
3496 5037
3497 EV_FREQUENT_CHECK; 5038 EV_FREQUENT_CHECK;
3498 5039
3499 { 5040 {
… …
3507 5048
3508 EV_FREQUENT_CHECK; 5049 EV_FREQUENT_CHECK;
3509} 5050}
3510#endif 5051#endif
3511 5052
5053#if EV_CLEANUP_ENABLE
5054void
5055ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
5056{
5057 if (ecb_expect_false (ev_is_active (w)))
5058 return;
5059
5060 EV_FREQUENT_CHECK;
5061
5062 ev_start (EV_A_ (W)w, ++cleanupcnt);
5063 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
5064 cleanups [cleanupcnt - 1] = w;
5065
5066 /* cleanup watchers should never keep a refcount on the loop */
5067 ev_unref (EV_A);
5068 EV_FREQUENT_CHECK;
5069}
5070
5071void
5072ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
5073{
5074 clear_pending (EV_A_ (W)w);
5075 if (ecb_expect_false (!ev_is_active (w)))
5076 return;
5077
5078 EV_FREQUENT_CHECK;
5079 ev_ref (EV_A);
5080
5081 {
5082 int active = ev_active (w);
5083
5084 cleanups [active - 1] = cleanups [--cleanupcnt];
5085 ev_active (cleanups [active - 1]) = active;
5086 }
5087
5088 ev_stop (EV_A_ (W)w);
5089
5090 EV_FREQUENT_CHECK;
5091}
5092#endif
5093
3512#if EV_ASYNC_ENABLE 5094#if EV_ASYNC_ENABLE
3513void 5095void
3514ev_async_start (EV_P_ ev_async *w) 5096ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
3515{ 5097{
3516 if (expect_false (ev_is_active (w))) 5098 if (ecb_expect_false (ev_is_active (w)))
3517 return; 5099 return;
3518 5100
5101 w->sent = 0;
5102
3519 evpipe_init (EV_A); 5103 evpipe_init (EV_A);
3520 5104
3521 EV_FREQUENT_CHECK; 5105 EV_FREQUENT_CHECK;
3522 5106
3523 ev_start (EV_A_ (W)w, ++asynccnt); 5107 ev_start (EV_A_ (W)w, ++asynccnt);
3524 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 5108 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
3525 asyncs [asynccnt - 1] = w; 5109 asyncs [asynccnt - 1] = w;
3526 5110
3527 EV_FREQUENT_CHECK; 5111 EV_FREQUENT_CHECK;
3528} 5112}
3529 5113
3530void 5114void
3531ev_async_stop (EV_P_ ev_async *w) 5115ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
3532{ 5116{
3533 clear_pending (EV_A_ (W)w); 5117 clear_pending (EV_A_ (W)w);
3534 if (expect_false (!ev_is_active (w))) 5118 if (ecb_expect_false (!ev_is_active (w)))
3535 return; 5119 return;
3536 5120
3537 EV_FREQUENT_CHECK; 5121 EV_FREQUENT_CHECK;
3538 5122
3539 { 5123 {
… …
3547 5131
3548 EV_FREQUENT_CHECK; 5132 EV_FREQUENT_CHECK;
3549} 5133}
3550 5134
3551void 5135void
3552ev_async_send (EV_P_ ev_async *w) 5136ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
3553{ 5137{
3554 w->sent = 1; 5138 w->sent = 1;
3555 evpipe_write (EV_A_ &async_pending); 5139 evpipe_write (EV_A_ &async_pending);
3556} 5140}
3557#endif 5141#endif
… …
3594 5178
3595 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5179 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3596} 5180}
3597 5181
3598void 5182void
3599ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 5183ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
3600{ 5184{
3601 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5185 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3602
3603 if (expect_false (!once))
3604 {
3605 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
3606 return;
3607 }
3608 5186
3609 once->cb = cb; 5187 once->cb = cb;
3610 once->arg = arg; 5188 once->arg = arg;
3611 5189
3612 ev_init (&once->io, once_cb_io); 5190 ev_init (&once->io, once_cb_io);
… …
3625} 5203}
3626 5204
3627/*****************************************************************************/ 5205/*****************************************************************************/
3628 5206
3629#if EV_WALK_ENABLE 5207#if EV_WALK_ENABLE
5208ecb_cold
3630void 5209void
3631ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 5210ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
3632{ 5211{
3633 int i, j; 5212 int i, j;
3634 ev_watcher_list *wl, *wn; 5213 ev_watcher_list *wl, *wn;
3635 5214
3636 if (types & (EV_IO | EV_EMBED)) 5215 if (types & (EV_IO | EV_EMBED))
… …
3679 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 5258 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3680#endif 5259#endif
3681 5260
3682#if EV_IDLE_ENABLE 5261#if EV_IDLE_ENABLE
3683 if (types & EV_IDLE) 5262 if (types & EV_IDLE)
3684 for (j = NUMPRI; i--; ) 5263 for (j = NUMPRI; j--; )
3685 for (i = idlecnt [j]; i--; ) 5264 for (i = idlecnt [j]; i--; )
3686 cb (EV_A_ EV_IDLE, idles [j][i]); 5265 cb (EV_A_ EV_IDLE, idles [j][i]);
3687#endif 5266#endif
3688 5267
3689#if EV_FORK_ENABLE 5268#if EV_FORK_ENABLE
… …
3697 if (types & EV_ASYNC) 5276 if (types & EV_ASYNC)
3698 for (i = asynccnt; i--; ) 5277 for (i = asynccnt; i--; )
3699 cb (EV_A_ EV_ASYNC, asyncs [i]); 5278 cb (EV_A_ EV_ASYNC, asyncs [i]);
3700#endif 5279#endif
3701 5280
5281#if EV_PREPARE_ENABLE
3702 if (types & EV_PREPARE) 5282 if (types & EV_PREPARE)
3703 for (i = preparecnt; i--; ) 5283 for (i = preparecnt; i--; )
3704#if EV_EMBED_ENABLE 5284# if EV_EMBED_ENABLE
3705 if (ev_cb (prepares [i]) != embed_prepare_cb) 5285 if (ev_cb (prepares [i]) != embed_prepare_cb)
3706#endif 5286# endif
3707 cb (EV_A_ EV_PREPARE, prepares [i]); 5287 cb (EV_A_ EV_PREPARE, prepares [i]);
5288#endif
3708 5289
5290#if EV_CHECK_ENABLE
3709 if (types & EV_CHECK) 5291 if (types & EV_CHECK)
3710 for (i = checkcnt; i--; ) 5292 for (i = checkcnt; i--; )
3711 cb (EV_A_ EV_CHECK, checks [i]); 5293 cb (EV_A_ EV_CHECK, checks [i]);
5294#endif
3712 5295
5296#if EV_SIGNAL_ENABLE
3713 if (types & EV_SIGNAL) 5297 if (types & EV_SIGNAL)
3714 for (i = 0; i < EV_NSIG - 1; ++i) 5298 for (i = 0; i < EV_NSIG - 1; ++i)
3715 for (wl = signals [i].head; wl; ) 5299 for (wl = signals [i].head; wl; )
3716 { 5300 {
3717 wn = wl->next; 5301 wn = wl->next;
3718 cb (EV_A_ EV_SIGNAL, wl); 5302 cb (EV_A_ EV_SIGNAL, wl);
3719 wl = wn; 5303 wl = wn;
3720 } 5304 }
5305#endif
3721 5306
5307#if EV_CHILD_ENABLE
3722 if (types & EV_CHILD) 5308 if (types & EV_CHILD)
3723 for (i = EV_PID_HASHSIZE; i--; ) 5309 for (i = (EV_PID_HASHSIZE); i--; )
3724 for (wl = childs [i]; wl; ) 5310 for (wl = childs [i]; wl; )
3725 { 5311 {
3726 wn = wl->next; 5312 wn = wl->next;
3727 cb (EV_A_ EV_CHILD, wl); 5313 cb (EV_A_ EV_CHILD, wl);
3728 wl = wn; 5314 wl = wn;
3729 } 5315 }
5316#endif
3730/* EV_STAT 0x00001000 /* stat data changed */ 5317/* EV_STAT 0x00001000 /* stat data changed */
3731/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 5318/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3732} 5319}
3733#endif 5320#endif
3734 5321
3735#if EV_MULTIPLICITY 5322#if EV_MULTIPLICITY
3736 #include "ev_wrap.h" 5323 #include "ev_wrap.h"
3737#endif 5324#endif
3738 5325
3739#ifdef __cplusplus
3740}
3741#endif
3742

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