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Comparing libev/ev.c (file contents):
Revision 1.331 by root, Tue Mar 9 08:55:03 2010 UTC vs.
Revision 1.490 by root, Thu Jun 20 22:44:59 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
115# if HAVE_KQUEUE && HAVE_SYS_EVENT_H 120# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
116# define EV_USE_KQUEUE 1 121# ifndef EV_USE_KQUEUE
117# else 122# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
118# define EV_USE_KQUEUE 0
119# endif 123# endif
124# else
125# undef EV_USE_KQUEUE
126# define EV_USE_KQUEUE 0
120# endif 127# endif
121 128
122# ifndef EV_USE_PORT
123# if HAVE_PORT_H && HAVE_PORT_CREATE 129# if HAVE_PORT_H && HAVE_PORT_CREATE
124# define EV_USE_PORT 1 130# ifndef EV_USE_PORT
125# else 131# define EV_USE_PORT EV_FEATURE_BACKENDS
126# define EV_USE_PORT 0
127# endif 132# endif
133# else
134# undef EV_USE_PORT
135# define EV_USE_PORT 0
128# endif 136# endif
129 137
130# ifndef EV_USE_INOTIFY
131# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 138# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
132# define EV_USE_INOTIFY 1 139# ifndef EV_USE_INOTIFY
133# else
134# define EV_USE_INOTIFY 0 140# define EV_USE_INOTIFY EV_FEATURE_OS
135# endif 141# endif
142# else
143# undef EV_USE_INOTIFY
144# define EV_USE_INOTIFY 0
136# endif 145# endif
137 146
138# ifndef EV_USE_SIGNALFD
139# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H 147# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
140# define EV_USE_SIGNALFD 1 148# ifndef EV_USE_SIGNALFD
141# else
142# define EV_USE_SIGNALFD 0 149# define EV_USE_SIGNALFD EV_FEATURE_OS
143# endif 150# endif
151# else
152# undef EV_USE_SIGNALFD
153# define EV_USE_SIGNALFD 0
144# endif 154# endif
145 155
156# if HAVE_EVENTFD
146# ifndef EV_USE_EVENTFD 157# ifndef EV_USE_EVENTFD
147# if HAVE_EVENTFD
148# define EV_USE_EVENTFD 1 158# define EV_USE_EVENTFD EV_FEATURE_OS
149# else
150# define EV_USE_EVENTFD 0
151# endif 159# endif
160# else
161# undef EV_USE_EVENTFD
162# define EV_USE_EVENTFD 0
152# endif 163# endif
153 164
154#endif 165#endif
155 166
156#include <math.h> 167/* OS X, in its infinite idiocy, actually HARDCODES
168 * a limit of 1024 into their select. Where people have brains,
169 * OS X engineers apparently have a vacuum. Or maybe they were
170 * ordered to have a vacuum, or they do anything for money.
171 * This might help. Or not.
172 * Note that this must be defined early, as other include files
173 * will rely on this define as well.
174 */
175#define _DARWIN_UNLIMITED_SELECT 1
176
157#include <stdlib.h> 177#include <stdlib.h>
158#include <string.h> 178#include <string.h>
159#include <fcntl.h> 179#include <fcntl.h>
160#include <stddef.h> 180#include <stddef.h>
161 181
… …
173# include EV_H 193# include EV_H
174#else 194#else
175# include "ev.h" 195# include "ev.h"
176#endif 196#endif
177 197
198#if EV_NO_THREADS
199# undef EV_NO_SMP
200# define EV_NO_SMP 1
201# undef ECB_NO_THREADS
202# define ECB_NO_THREADS 1
203#endif
204#if EV_NO_SMP
205# undef EV_NO_SMP
206# define ECB_NO_SMP 1
207#endif
208
178#ifndef _WIN32 209#ifndef _WIN32
179# include <sys/time.h> 210# include <sys/time.h>
180# include <sys/wait.h> 211# include <sys/wait.h>
181# include <unistd.h> 212# include <unistd.h>
182#else 213#else
183# include <io.h> 214# include <io.h>
184# define WIN32_LEAN_AND_MEAN 215# define WIN32_LEAN_AND_MEAN
216# include <winsock2.h>
185# include <windows.h> 217# include <windows.h>
186# ifndef EV_SELECT_IS_WINSOCKET 218# ifndef EV_SELECT_IS_WINSOCKET
187# define EV_SELECT_IS_WINSOCKET 1 219# define EV_SELECT_IS_WINSOCKET 1
188# endif 220# endif
189# undef EV_AVOID_STDIO 221# undef EV_AVOID_STDIO
190#endif 222#endif
191 223
192/* this block tries to deduce configuration from header-defined symbols and defaults */ 224/* this block tries to deduce configuration from header-defined symbols and defaults */
193 225
194/* try to deduce the maximum number of signals on this platform */ 226/* try to deduce the maximum number of signals on this platform */
195#if defined (EV_NSIG) 227#if defined EV_NSIG
196/* use what's provided */ 228/* use what's provided */
197#elif defined (NSIG) 229#elif defined NSIG
198# define EV_NSIG (NSIG) 230# define EV_NSIG (NSIG)
199#elif defined(_NSIG) 231#elif defined _NSIG
200# define EV_NSIG (_NSIG) 232# define EV_NSIG (_NSIG)
201#elif defined (SIGMAX) 233#elif defined SIGMAX
202# define EV_NSIG (SIGMAX+1) 234# define EV_NSIG (SIGMAX+1)
203#elif defined (SIG_MAX) 235#elif defined SIG_MAX
204# define EV_NSIG (SIG_MAX+1) 236# define EV_NSIG (SIG_MAX+1)
205#elif defined (_SIG_MAX) 237#elif defined _SIG_MAX
206# define EV_NSIG (_SIG_MAX+1) 238# define EV_NSIG (_SIG_MAX+1)
207#elif defined (MAXSIG) 239#elif defined MAXSIG
208# define EV_NSIG (MAXSIG+1) 240# define EV_NSIG (MAXSIG+1)
209#elif defined (MAX_SIG) 241#elif defined MAX_SIG
210# define EV_NSIG (MAX_SIG+1) 242# define EV_NSIG (MAX_SIG+1)
211#elif defined (SIGARRAYSIZE) 243#elif defined SIGARRAYSIZE
212# define EV_NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */ 244# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
213#elif defined (_sys_nsig) 245#elif defined _sys_nsig
214# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 246# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
215#else 247#else
216# error "unable to find value for NSIG, please report" 248# define EV_NSIG (8 * sizeof (sigset_t) + 1)
217/* to make it compile regardless, just remove the above line */ 249#endif
218# define EV_NSIG 65 250
251#ifndef EV_USE_FLOOR
252# define EV_USE_FLOOR 0
219#endif 253#endif
220 254
221#ifndef EV_USE_CLOCK_SYSCALL 255#ifndef EV_USE_CLOCK_SYSCALL
222# if __linux && __GLIBC__ >= 2 256# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
223# define EV_USE_CLOCK_SYSCALL 1 257# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
224# else 258# else
225# define EV_USE_CLOCK_SYSCALL 0 259# define EV_USE_CLOCK_SYSCALL 0
226# endif 260# endif
227#endif 261#endif
228 262
263#if !(_POSIX_TIMERS > 0)
264# ifndef EV_USE_MONOTONIC
265# define EV_USE_MONOTONIC 0
266# endif
267# ifndef EV_USE_REALTIME
268# define EV_USE_REALTIME 0
269# endif
270#endif
271
229#ifndef EV_USE_MONOTONIC 272#ifndef EV_USE_MONOTONIC
230# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 273# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
231# define EV_USE_MONOTONIC 1 274# define EV_USE_MONOTONIC EV_FEATURE_OS
232# else 275# else
233# define EV_USE_MONOTONIC 0 276# define EV_USE_MONOTONIC 0
234# endif 277# endif
235#endif 278#endif
236 279
… …
238# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 281# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
239#endif 282#endif
240 283
241#ifndef EV_USE_NANOSLEEP 284#ifndef EV_USE_NANOSLEEP
242# if _POSIX_C_SOURCE >= 199309L 285# if _POSIX_C_SOURCE >= 199309L
243# define EV_USE_NANOSLEEP 1 286# define EV_USE_NANOSLEEP EV_FEATURE_OS
244# else 287# else
245# define EV_USE_NANOSLEEP 0 288# define EV_USE_NANOSLEEP 0
246# endif 289# endif
247#endif 290#endif
248 291
249#ifndef EV_USE_SELECT 292#ifndef EV_USE_SELECT
250# define EV_USE_SELECT 1 293# define EV_USE_SELECT EV_FEATURE_BACKENDS
251#endif 294#endif
252 295
253#ifndef EV_USE_POLL 296#ifndef EV_USE_POLL
254# ifdef _WIN32 297# ifdef _WIN32
255# define EV_USE_POLL 0 298# define EV_USE_POLL 0
256# else 299# else
257# define EV_USE_POLL 1 300# define EV_USE_POLL EV_FEATURE_BACKENDS
258# endif 301# endif
259#endif 302#endif
260 303
261#ifndef EV_USE_EPOLL 304#ifndef EV_USE_EPOLL
262# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 305# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
263# define EV_USE_EPOLL 1 306# define EV_USE_EPOLL EV_FEATURE_BACKENDS
264# else 307# else
265# define EV_USE_EPOLL 0 308# define EV_USE_EPOLL 0
266# endif 309# endif
267#endif 310#endif
268 311
… …
272 315
273#ifndef EV_USE_PORT 316#ifndef EV_USE_PORT
274# define EV_USE_PORT 0 317# define EV_USE_PORT 0
275#endif 318#endif
276 319
320#ifndef EV_USE_LINUXAIO
321# define EV_USE_LINUXAIO 0
322#endif
323
277#ifndef EV_USE_INOTIFY 324#ifndef EV_USE_INOTIFY
278# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 325# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
279# define EV_USE_INOTIFY 1 326# define EV_USE_INOTIFY EV_FEATURE_OS
280# else 327# else
281# define EV_USE_INOTIFY 0 328# define EV_USE_INOTIFY 0
282# endif 329# endif
283#endif 330#endif
284 331
285#ifndef EV_PID_HASHSIZE 332#ifndef EV_PID_HASHSIZE
286# if EV_MINIMAL 333# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
287# define EV_PID_HASHSIZE 1
288# else
289# define EV_PID_HASHSIZE 16
290# endif
291#endif 334#endif
292 335
293#ifndef EV_INOTIFY_HASHSIZE 336#ifndef EV_INOTIFY_HASHSIZE
294# if EV_MINIMAL 337# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
295# define EV_INOTIFY_HASHSIZE 1
296# else
297# define EV_INOTIFY_HASHSIZE 16
298# endif
299#endif 338#endif
300 339
301#ifndef EV_USE_EVENTFD 340#ifndef EV_USE_EVENTFD
302# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 341# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
303# define EV_USE_EVENTFD 1 342# define EV_USE_EVENTFD EV_FEATURE_OS
304# else 343# else
305# define EV_USE_EVENTFD 0 344# define EV_USE_EVENTFD 0
306# endif 345# endif
307#endif 346#endif
308 347
309#ifndef EV_USE_SIGNALFD 348#ifndef EV_USE_SIGNALFD
310# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 349# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
311# define EV_USE_SIGNALFD 1 350# define EV_USE_SIGNALFD EV_FEATURE_OS
312# else 351# else
313# define EV_USE_SIGNALFD 0 352# define EV_USE_SIGNALFD 0
314# endif 353# endif
315#endif 354#endif
316 355
… …
319# define EV_USE_4HEAP 1 358# define EV_USE_4HEAP 1
320# define EV_HEAP_CACHE_AT 1 359# define EV_HEAP_CACHE_AT 1
321#endif 360#endif
322 361
323#ifndef EV_VERIFY 362#ifndef EV_VERIFY
324# define EV_VERIFY !EV_MINIMAL 363# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
325#endif 364#endif
326 365
327#ifndef EV_USE_4HEAP 366#ifndef EV_USE_4HEAP
328# define EV_USE_4HEAP !EV_MINIMAL 367# define EV_USE_4HEAP EV_FEATURE_DATA
329#endif 368#endif
330 369
331#ifndef EV_HEAP_CACHE_AT 370#ifndef EV_HEAP_CACHE_AT
332# define EV_HEAP_CACHE_AT !EV_MINIMAL 371# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
372#endif
373
374#ifdef __ANDROID__
375/* supposedly, android doesn't typedef fd_mask */
376# undef EV_USE_SELECT
377# define EV_USE_SELECT 0
378/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
379# undef EV_USE_CLOCK_SYSCALL
380# define EV_USE_CLOCK_SYSCALL 0
381#endif
382
383/* aix's poll.h seems to cause lots of trouble */
384#ifdef _AIX
385/* AIX has a completely broken poll.h header */
386# undef EV_USE_POLL
387# define EV_USE_POLL 0
388#endif
389
390#if EV_USE_LINUXAIO
391# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
333#endif 392#endif
334 393
335/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 394/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
336/* which makes programs even slower. might work on other unices, too. */ 395/* which makes programs even slower. might work on other unices, too. */
337#if EV_USE_CLOCK_SYSCALL 396#if EV_USE_CLOCK_SYSCALL
338# include <syscall.h> 397# include <sys/syscall.h>
339# ifdef SYS_clock_gettime 398# ifdef SYS_clock_gettime
340# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 399# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
341# undef EV_USE_MONOTONIC 400# undef EV_USE_MONOTONIC
342# define EV_USE_MONOTONIC 1 401# define EV_USE_MONOTONIC 1
343# else 402# else
… …
346# endif 405# endif
347#endif 406#endif
348 407
349/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 408/* this block fixes any misconfiguration where we know we run into trouble otherwise */
350 409
351#ifdef _AIX
352/* AIX has a completely broken poll.h header */
353# undef EV_USE_POLL
354# define EV_USE_POLL 0
355#endif
356
357#ifndef CLOCK_MONOTONIC 410#ifndef CLOCK_MONOTONIC
358# undef EV_USE_MONOTONIC 411# undef EV_USE_MONOTONIC
359# define EV_USE_MONOTONIC 0 412# define EV_USE_MONOTONIC 0
360#endif 413#endif
361 414
… …
368# undef EV_USE_INOTIFY 421# undef EV_USE_INOTIFY
369# define EV_USE_INOTIFY 0 422# define EV_USE_INOTIFY 0
370#endif 423#endif
371 424
372#if !EV_USE_NANOSLEEP 425#if !EV_USE_NANOSLEEP
373# ifndef _WIN32 426/* hp-ux has it in sys/time.h, which we unconditionally include above */
427# if !defined _WIN32 && !defined __hpux
374# include <sys/select.h> 428# include <sys/select.h>
375# endif 429# endif
376#endif 430#endif
377 431
378#if EV_USE_INOTIFY 432#if EV_USE_INOTIFY
379# include <sys/utsname.h>
380# include <sys/statfs.h> 433# include <sys/statfs.h>
381# include <sys/inotify.h> 434# include <sys/inotify.h>
382/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 435/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
383# ifndef IN_DONT_FOLLOW 436# ifndef IN_DONT_FOLLOW
384# undef EV_USE_INOTIFY 437# undef EV_USE_INOTIFY
385# define EV_USE_INOTIFY 0 438# define EV_USE_INOTIFY 0
386# endif 439# endif
387#endif
388
389#if EV_SELECT_IS_WINSOCKET
390# include <winsock.h>
391#endif 440#endif
392 441
393#if EV_USE_EVENTFD 442#if EV_USE_EVENTFD
394/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 443/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
395# include <stdint.h> 444# include <stdint.h>
… …
401# define EFD_CLOEXEC O_CLOEXEC 450# define EFD_CLOEXEC O_CLOEXEC
402# else 451# else
403# define EFD_CLOEXEC 02000000 452# define EFD_CLOEXEC 02000000
404# endif 453# endif
405# endif 454# endif
406# ifdef __cplusplus
407extern "C" {
408# endif
409int (eventfd) (unsigned int initval, int flags); 455EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
410# ifdef __cplusplus
411}
412# endif
413#endif 456#endif
414 457
415#if EV_USE_SIGNALFD 458#if EV_USE_SIGNALFD
416/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 459/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
417# include <stdint.h> 460# include <stdint.h>
… …
423# define SFD_CLOEXEC O_CLOEXEC 466# define SFD_CLOEXEC O_CLOEXEC
424# else 467# else
425# define SFD_CLOEXEC 02000000 468# define SFD_CLOEXEC 02000000
426# endif 469# endif
427# endif 470# endif
428# ifdef __cplusplus
429extern "C" {
430# endif
431int signalfd (int fd, const sigset_t *mask, int flags); 471EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
432 472
433struct signalfd_siginfo 473struct signalfd_siginfo
434{ 474{
435 uint32_t ssi_signo; 475 uint32_t ssi_signo;
436 char pad[128 - sizeof (uint32_t)]; 476 char pad[128 - sizeof (uint32_t)];
437}; 477};
438# ifdef __cplusplus
439}
440# endif 478#endif
441#endif
442
443 479
444/**/ 480/**/
445 481
446#if EV_VERIFY >= 3 482#if EV_VERIFY >= 3
447# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 483# define EV_FREQUENT_CHECK ev_verify (EV_A)
448#else 484#else
449# define EV_FREQUENT_CHECK do { } while (0) 485# define EV_FREQUENT_CHECK do { } while (0)
450#endif 486#endif
451 487
452/* 488/*
453 * This is used to avoid floating point rounding problems. 489 * This is used to work around floating point rounding problems.
454 * It is added to ev_rt_now when scheduling periodics
455 * to ensure progress, time-wise, even when rounding
456 * errors are against us.
457 * This value is good at least till the year 4000. 490 * This value is good at least till the year 4000.
458 * Better solutions welcome.
459 */ 491 */
460#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 492#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
493/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
461 494
462#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 495#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
463#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 496#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
464 497
498#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
499#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
500
501/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
502/* ECB.H BEGIN */
503/*
504 * libecb - http://software.schmorp.de/pkg/libecb
505 *
506 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
507 * Copyright (©) 2011 Emanuele Giaquinta
508 * All rights reserved.
509 *
510 * Redistribution and use in source and binary forms, with or without modifica-
511 * tion, are permitted provided that the following conditions are met:
512 *
513 * 1. Redistributions of source code must retain the above copyright notice,
514 * this list of conditions and the following disclaimer.
515 *
516 * 2. Redistributions in binary form must reproduce the above copyright
517 * notice, this list of conditions and the following disclaimer in the
518 * documentation and/or other materials provided with the distribution.
519 *
520 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
521 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
522 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
523 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
524 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
525 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
526 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
527 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
528 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
529 * OF THE POSSIBILITY OF SUCH DAMAGE.
530 *
531 * Alternatively, the contents of this file may be used under the terms of
532 * the GNU General Public License ("GPL") version 2 or any later version,
533 * in which case the provisions of the GPL are applicable instead of
534 * the above. If you wish to allow the use of your version of this file
535 * only under the terms of the GPL and not to allow others to use your
536 * version of this file under the BSD license, indicate your decision
537 * by deleting the provisions above and replace them with the notice
538 * and other provisions required by the GPL. If you do not delete the
539 * provisions above, a recipient may use your version of this file under
540 * either the BSD or the GPL.
541 */
542
543#ifndef ECB_H
544#define ECB_H
545
546/* 16 bits major, 16 bits minor */
547#define ECB_VERSION 0x00010005
548
549#ifdef _WIN32
550 typedef signed char int8_t;
551 typedef unsigned char uint8_t;
552 typedef signed short int16_t;
553 typedef unsigned short uint16_t;
554 typedef signed int int32_t;
555 typedef unsigned int uint32_t;
465#if __GNUC__ >= 4 556 #if __GNUC__
557 typedef signed long long int64_t;
558 typedef unsigned long long uint64_t;
559 #else /* _MSC_VER || __BORLANDC__ */
560 typedef signed __int64 int64_t;
561 typedef unsigned __int64 uint64_t;
562 #endif
563 #ifdef _WIN64
564 #define ECB_PTRSIZE 8
565 typedef uint64_t uintptr_t;
566 typedef int64_t intptr_t;
567 #else
568 #define ECB_PTRSIZE 4
569 typedef uint32_t uintptr_t;
570 typedef int32_t intptr_t;
571 #endif
572#else
573 #include <inttypes.h>
574 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
575 #define ECB_PTRSIZE 8
576 #else
577 #define ECB_PTRSIZE 4
578 #endif
579#endif
580
581#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
582#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
583
584/* work around x32 idiocy by defining proper macros */
585#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
586 #if _ILP32
587 #define ECB_AMD64_X32 1
588 #else
589 #define ECB_AMD64 1
590 #endif
591#endif
592
593/* many compilers define _GNUC_ to some versions but then only implement
594 * what their idiot authors think are the "more important" extensions,
595 * causing enormous grief in return for some better fake benchmark numbers.
596 * or so.
597 * we try to detect these and simply assume they are not gcc - if they have
598 * an issue with that they should have done it right in the first place.
599 */
600#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
601 #define ECB_GCC_VERSION(major,minor) 0
602#else
603 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
604#endif
605
606#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
607
608#if __clang__ && defined __has_builtin
609 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
610#else
611 #define ECB_CLANG_BUILTIN(x) 0
612#endif
613
614#if __clang__ && defined __has_extension
615 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
616#else
617 #define ECB_CLANG_EXTENSION(x) 0
618#endif
619
620#define ECB_CPP (__cplusplus+0)
621#define ECB_CPP11 (__cplusplus >= 201103L)
622#define ECB_CPP14 (__cplusplus >= 201402L)
623#define ECB_CPP17 (__cplusplus >= 201703L)
624
625#if ECB_CPP
626 #define ECB_C 0
627 #define ECB_STDC_VERSION 0
628#else
629 #define ECB_C 1
630 #define ECB_STDC_VERSION __STDC_VERSION__
631#endif
632
633#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
634#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
635#define ECB_C17 (ECB_STDC_VERSION >= 201710L)
636
637#if ECB_CPP
638 #define ECB_EXTERN_C extern "C"
639 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
640 #define ECB_EXTERN_C_END }
641#else
642 #define ECB_EXTERN_C extern
643 #define ECB_EXTERN_C_BEG
644 #define ECB_EXTERN_C_END
645#endif
646
647/*****************************************************************************/
648
649/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
650/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
651
652#if ECB_NO_THREADS
653 #define ECB_NO_SMP 1
654#endif
655
656#if ECB_NO_SMP
657 #define ECB_MEMORY_FENCE do { } while (0)
658#endif
659
660/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
661#if __xlC__ && ECB_CPP
662 #include <builtins.h>
663#endif
664
665#if 1400 <= _MSC_VER
666 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
667#endif
668
669#ifndef ECB_MEMORY_FENCE
670 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
671 #if __i386 || __i386__
672 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
673 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
674 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
675 #elif ECB_GCC_AMD64
676 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
677 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
678 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
679 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
680 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
681 #elif defined __ARM_ARCH_2__ \
682 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
683 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
684 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
685 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
686 || defined __ARM_ARCH_5TEJ__
687 /* should not need any, unless running old code on newer cpu - arm doesn't support that */
688 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
689 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
690 || defined __ARM_ARCH_6T2__
691 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
692 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
693 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
694 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
695 #elif __aarch64__
696 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
697 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
698 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
699 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
700 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
701 #elif defined __s390__ || defined __s390x__
702 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
703 #elif defined __mips__
704 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
705 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
706 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
707 #elif defined __alpha__
708 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
709 #elif defined __hppa__
710 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
711 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
712 #elif defined __ia64__
713 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
714 #elif defined __m68k__
715 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
716 #elif defined __m88k__
717 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
718 #elif defined __sh__
719 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
720 #endif
721 #endif
722#endif
723
724#ifndef ECB_MEMORY_FENCE
725 #if ECB_GCC_VERSION(4,7)
726 /* see comment below (stdatomic.h) about the C11 memory model. */
727 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
728 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
729 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
730
731 #elif ECB_CLANG_EXTENSION(c_atomic)
732 /* see comment below (stdatomic.h) about the C11 memory model. */
733 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
734 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
735 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
736
737 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
738 #define ECB_MEMORY_FENCE __sync_synchronize ()
739 #elif _MSC_VER >= 1500 /* VC++ 2008 */
740 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
741 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
742 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
743 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
744 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
745 #elif _MSC_VER >= 1400 /* VC++ 2005 */
746 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
747 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
748 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
749 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
750 #elif defined _WIN32
751 #include <WinNT.h>
752 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
753 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
754 #include <mbarrier.h>
755 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
756 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
757 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
758 #elif __xlC__
759 #define ECB_MEMORY_FENCE __sync ()
760 #endif
761#endif
762
763#ifndef ECB_MEMORY_FENCE
764 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
765 /* we assume that these memory fences work on all variables/all memory accesses, */
766 /* not just C11 atomics and atomic accesses */
767 #include <stdatomic.h>
768 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
769 /* any fence other than seq_cst, which isn't very efficient for us. */
770 /* Why that is, we don't know - either the C11 memory model is quite useless */
771 /* for most usages, or gcc and clang have a bug */
772 /* I *currently* lean towards the latter, and inefficiently implement */
773 /* all three of ecb's fences as a seq_cst fence */
774 /* Update, gcc-4.8 generates mfence for all c++ fences, but nothing */
775 /* for all __atomic_thread_fence's except seq_cst */
776 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
777 #endif
778#endif
779
780#ifndef ECB_MEMORY_FENCE
781 #if !ECB_AVOID_PTHREADS
782 /*
783 * if you get undefined symbol references to pthread_mutex_lock,
784 * or failure to find pthread.h, then you should implement
785 * the ECB_MEMORY_FENCE operations for your cpu/compiler
786 * OR provide pthread.h and link against the posix thread library
787 * of your system.
788 */
789 #include <pthread.h>
790 #define ECB_NEEDS_PTHREADS 1
791 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
792
793 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
794 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
795 #endif
796#endif
797
798#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
799 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
800#endif
801
802#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
803 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
804#endif
805
806/*****************************************************************************/
807
808#if ECB_CPP
809 #define ecb_inline static inline
810#elif ECB_GCC_VERSION(2,5)
811 #define ecb_inline static __inline__
812#elif ECB_C99
813 #define ecb_inline static inline
814#else
815 #define ecb_inline static
816#endif
817
818#if ECB_GCC_VERSION(3,3)
819 #define ecb_restrict __restrict__
820#elif ECB_C99
821 #define ecb_restrict restrict
822#else
823 #define ecb_restrict
824#endif
825
826typedef int ecb_bool;
827
828#define ECB_CONCAT_(a, b) a ## b
829#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
830#define ECB_STRINGIFY_(a) # a
831#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
832#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
833
834#define ecb_function_ ecb_inline
835
836#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
837 #define ecb_attribute(attrlist) __attribute__ (attrlist)
838#else
839 #define ecb_attribute(attrlist)
840#endif
841
842#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
843 #define ecb_is_constant(expr) __builtin_constant_p (expr)
844#else
845 /* possible C11 impl for integral types
846 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
847 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
848
849 #define ecb_is_constant(expr) 0
850#endif
851
852#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
466# define expect(expr,value) __builtin_expect ((expr),(value)) 853 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
467# define noinline __attribute__ ((noinline))
468#else 854#else
469# define expect(expr,value) (expr) 855 #define ecb_expect(expr,value) (expr)
470# define noinline
471# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
472# define inline
473# endif 856#endif
474#endif
475 857
858#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
859 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
860#else
861 #define ecb_prefetch(addr,rw,locality)
862#endif
863
864/* no emulation for ecb_decltype */
865#if ECB_CPP11
866 // older implementations might have problems with decltype(x)::type, work around it
867 template<class T> struct ecb_decltype_t { typedef T type; };
868 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
869#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
870 #define ecb_decltype(x) __typeof__ (x)
871#endif
872
873#if _MSC_VER >= 1300
874 #define ecb_deprecated __declspec (deprecated)
875#else
876 #define ecb_deprecated ecb_attribute ((__deprecated__))
877#endif
878
879#if _MSC_VER >= 1500
880 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
881#elif ECB_GCC_VERSION(4,5)
882 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
883#else
884 #define ecb_deprecated_message(msg) ecb_deprecated
885#endif
886
887#if _MSC_VER >= 1400
888 #define ecb_noinline __declspec (noinline)
889#else
890 #define ecb_noinline ecb_attribute ((__noinline__))
891#endif
892
893#define ecb_unused ecb_attribute ((__unused__))
894#define ecb_const ecb_attribute ((__const__))
895#define ecb_pure ecb_attribute ((__pure__))
896
897#if ECB_C11 || __IBMC_NORETURN
898 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
899 #define ecb_noreturn _Noreturn
900#elif ECB_CPP11
901 #define ecb_noreturn [[noreturn]]
902#elif _MSC_VER >= 1200
903 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
904 #define ecb_noreturn __declspec (noreturn)
905#else
906 #define ecb_noreturn ecb_attribute ((__noreturn__))
907#endif
908
909#if ECB_GCC_VERSION(4,3)
910 #define ecb_artificial ecb_attribute ((__artificial__))
911 #define ecb_hot ecb_attribute ((__hot__))
912 #define ecb_cold ecb_attribute ((__cold__))
913#else
914 #define ecb_artificial
915 #define ecb_hot
916 #define ecb_cold
917#endif
918
919/* put around conditional expressions if you are very sure that the */
920/* expression is mostly true or mostly false. note that these return */
921/* booleans, not the expression. */
476#define expect_false(expr) expect ((expr) != 0, 0) 922#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
477#define expect_true(expr) expect ((expr) != 0, 1) 923#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
924/* for compatibility to the rest of the world */
925#define ecb_likely(expr) ecb_expect_true (expr)
926#define ecb_unlikely(expr) ecb_expect_false (expr)
927
928/* count trailing zero bits and count # of one bits */
929#if ECB_GCC_VERSION(3,4) \
930 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
931 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
932 && ECB_CLANG_BUILTIN(__builtin_popcount))
933 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
934 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
935 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
936 #define ecb_ctz32(x) __builtin_ctz (x)
937 #define ecb_ctz64(x) __builtin_ctzll (x)
938 #define ecb_popcount32(x) __builtin_popcount (x)
939 /* no popcountll */
940#else
941 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
942 ecb_function_ ecb_const int
943 ecb_ctz32 (uint32_t x)
944 {
945#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
946 unsigned long r;
947 _BitScanForward (&r, x);
948 return (int)r;
949#else
950 int r = 0;
951
952 x &= ~x + 1; /* this isolates the lowest bit */
953
954#if ECB_branchless_on_i386
955 r += !!(x & 0xaaaaaaaa) << 0;
956 r += !!(x & 0xcccccccc) << 1;
957 r += !!(x & 0xf0f0f0f0) << 2;
958 r += !!(x & 0xff00ff00) << 3;
959 r += !!(x & 0xffff0000) << 4;
960#else
961 if (x & 0xaaaaaaaa) r += 1;
962 if (x & 0xcccccccc) r += 2;
963 if (x & 0xf0f0f0f0) r += 4;
964 if (x & 0xff00ff00) r += 8;
965 if (x & 0xffff0000) r += 16;
966#endif
967
968 return r;
969#endif
970 }
971
972 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
973 ecb_function_ ecb_const int
974 ecb_ctz64 (uint64_t x)
975 {
976#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
977 unsigned long r;
978 _BitScanForward64 (&r, x);
979 return (int)r;
980#else
981 int shift = x & 0xffffffff ? 0 : 32;
982 return ecb_ctz32 (x >> shift) + shift;
983#endif
984 }
985
986 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
987 ecb_function_ ecb_const int
988 ecb_popcount32 (uint32_t x)
989 {
990 x -= (x >> 1) & 0x55555555;
991 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
992 x = ((x >> 4) + x) & 0x0f0f0f0f;
993 x *= 0x01010101;
994
995 return x >> 24;
996 }
997
998 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
999 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
1000 {
1001#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1002 unsigned long r;
1003 _BitScanReverse (&r, x);
1004 return (int)r;
1005#else
1006 int r = 0;
1007
1008 if (x >> 16) { x >>= 16; r += 16; }
1009 if (x >> 8) { x >>= 8; r += 8; }
1010 if (x >> 4) { x >>= 4; r += 4; }
1011 if (x >> 2) { x >>= 2; r += 2; }
1012 if (x >> 1) { r += 1; }
1013
1014 return r;
1015#endif
1016 }
1017
1018 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
1019 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
1020 {
1021#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1022 unsigned long r;
1023 _BitScanReverse64 (&r, x);
1024 return (int)r;
1025#else
1026 int r = 0;
1027
1028 if (x >> 32) { x >>= 32; r += 32; }
1029
1030 return r + ecb_ld32 (x);
1031#endif
1032 }
1033#endif
1034
1035ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
1036ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
1037ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
1038ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
1039
1040ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
1041ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
1042{
1043 return ( (x * 0x0802U & 0x22110U)
1044 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
1045}
1046
1047ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
1048ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
1049{
1050 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
1051 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
1052 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
1053 x = ( x >> 8 ) | ( x << 8);
1054
1055 return x;
1056}
1057
1058ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
1059ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
1060{
1061 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
1062 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
1063 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
1064 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
1065 x = ( x >> 16 ) | ( x << 16);
1066
1067 return x;
1068}
1069
1070/* popcount64 is only available on 64 bit cpus as gcc builtin */
1071/* so for this version we are lazy */
1072ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
1073ecb_function_ ecb_const int
1074ecb_popcount64 (uint64_t x)
1075{
1076 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
1077}
1078
1079ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
1080ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
1081ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
1082ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
1083ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
1084ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
1085ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
1086ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
1087
1088ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
1089ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
1090ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
1091ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
1092ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
1093ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
1094ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
1095ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
1096
1097#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1098 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1099 #define ecb_bswap16(x) __builtin_bswap16 (x)
1100 #else
1101 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1102 #endif
1103 #define ecb_bswap32(x) __builtin_bswap32 (x)
1104 #define ecb_bswap64(x) __builtin_bswap64 (x)
1105#elif _MSC_VER
1106 #include <stdlib.h>
1107 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1108 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1109 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
1110#else
1111 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
1112 ecb_function_ ecb_const uint16_t
1113 ecb_bswap16 (uint16_t x)
1114 {
1115 return ecb_rotl16 (x, 8);
1116 }
1117
1118 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
1119 ecb_function_ ecb_const uint32_t
1120 ecb_bswap32 (uint32_t x)
1121 {
1122 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
1123 }
1124
1125 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
1126 ecb_function_ ecb_const uint64_t
1127 ecb_bswap64 (uint64_t x)
1128 {
1129 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
1130 }
1131#endif
1132
1133#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
1134 #define ecb_unreachable() __builtin_unreachable ()
1135#else
1136 /* this seems to work fine, but gcc always emits a warning for it :/ */
1137 ecb_inline ecb_noreturn void ecb_unreachable (void);
1138 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
1139#endif
1140
1141/* try to tell the compiler that some condition is definitely true */
1142#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
1143
1144ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
1145ecb_inline ecb_const uint32_t
1146ecb_byteorder_helper (void)
1147{
1148 /* the union code still generates code under pressure in gcc, */
1149 /* but less than using pointers, and always seems to */
1150 /* successfully return a constant. */
1151 /* the reason why we have this horrible preprocessor mess */
1152 /* is to avoid it in all cases, at least on common architectures */
1153 /* or when using a recent enough gcc version (>= 4.6) */
1154#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1155 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1156 #define ECB_LITTLE_ENDIAN 1
1157 return 0x44332211;
1158#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1159 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1160 #define ECB_BIG_ENDIAN 1
1161 return 0x11223344;
1162#else
1163 union
1164 {
1165 uint8_t c[4];
1166 uint32_t u;
1167 } u = { 0x11, 0x22, 0x33, 0x44 };
1168 return u.u;
1169#endif
1170}
1171
1172ecb_inline ecb_const ecb_bool ecb_big_endian (void);
1173ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
1174ecb_inline ecb_const ecb_bool ecb_little_endian (void);
1175ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
1176
1177#if ECB_GCC_VERSION(3,0) || ECB_C99
1178 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1179#else
1180 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1181#endif
1182
1183#if ECB_CPP
1184 template<typename T>
1185 static inline T ecb_div_rd (T val, T div)
1186 {
1187 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1188 }
1189 template<typename T>
1190 static inline T ecb_div_ru (T val, T div)
1191 {
1192 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1193 }
1194#else
1195 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1196 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1197#endif
1198
1199#if ecb_cplusplus_does_not_suck
1200 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1201 template<typename T, int N>
1202 static inline int ecb_array_length (const T (&arr)[N])
1203 {
1204 return N;
1205 }
1206#else
1207 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1208#endif
1209
1210ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1211ecb_function_ ecb_const uint32_t
1212ecb_binary16_to_binary32 (uint32_t x)
1213{
1214 unsigned int s = (x & 0x8000) << (31 - 15);
1215 int e = (x >> 10) & 0x001f;
1216 unsigned int m = x & 0x03ff;
1217
1218 if (ecb_expect_false (e == 31))
1219 /* infinity or NaN */
1220 e = 255 - (127 - 15);
1221 else if (ecb_expect_false (!e))
1222 {
1223 if (ecb_expect_true (!m))
1224 /* zero, handled by code below by forcing e to 0 */
1225 e = 0 - (127 - 15);
1226 else
1227 {
1228 /* subnormal, renormalise */
1229 unsigned int s = 10 - ecb_ld32 (m);
1230
1231 m = (m << s) & 0x3ff; /* mask implicit bit */
1232 e -= s - 1;
1233 }
1234 }
1235
1236 /* e and m now are normalised, or zero, (or inf or nan) */
1237 e += 127 - 15;
1238
1239 return s | (e << 23) | (m << (23 - 10));
1240}
1241
1242ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1243ecb_function_ ecb_const uint16_t
1244ecb_binary32_to_binary16 (uint32_t x)
1245{
1246 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1247 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1248 unsigned int m = x & 0x007fffff;
1249
1250 x &= 0x7fffffff;
1251
1252 /* if it's within range of binary16 normals, use fast path */
1253 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1254 {
1255 /* mantissa round-to-even */
1256 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1257
1258 /* handle overflow */
1259 if (ecb_expect_false (m >= 0x00800000))
1260 {
1261 m >>= 1;
1262 e += 1;
1263 }
1264
1265 return s | (e << 10) | (m >> (23 - 10));
1266 }
1267
1268 /* handle large numbers and infinity */
1269 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1270 return s | 0x7c00;
1271
1272 /* handle zero, subnormals and small numbers */
1273 if (ecb_expect_true (x < 0x38800000))
1274 {
1275 /* zero */
1276 if (ecb_expect_true (!x))
1277 return s;
1278
1279 /* handle subnormals */
1280
1281 /* too small, will be zero */
1282 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1283 return s;
1284
1285 m |= 0x00800000; /* make implicit bit explicit */
1286
1287 /* very tricky - we need to round to the nearest e (+10) bit value */
1288 {
1289 unsigned int bits = 14 - e;
1290 unsigned int half = (1 << (bits - 1)) - 1;
1291 unsigned int even = (m >> bits) & 1;
1292
1293 /* if this overflows, we will end up with a normalised number */
1294 m = (m + half + even) >> bits;
1295 }
1296
1297 return s | m;
1298 }
1299
1300 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1301 m >>= 13;
1302
1303 return s | 0x7c00 | m | !m;
1304}
1305
1306/*******************************************************************************/
1307/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1308
1309/* basically, everything uses "ieee pure-endian" floating point numbers */
1310/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1311#if 0 \
1312 || __i386 || __i386__ \
1313 || ECB_GCC_AMD64 \
1314 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1315 || defined __s390__ || defined __s390x__ \
1316 || defined __mips__ \
1317 || defined __alpha__ \
1318 || defined __hppa__ \
1319 || defined __ia64__ \
1320 || defined __m68k__ \
1321 || defined __m88k__ \
1322 || defined __sh__ \
1323 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1324 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1325 || defined __aarch64__
1326 #define ECB_STDFP 1
1327 #include <string.h> /* for memcpy */
1328#else
1329 #define ECB_STDFP 0
1330#endif
1331
1332#ifndef ECB_NO_LIBM
1333
1334 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1335
1336 /* only the oldest of old doesn't have this one. solaris. */
1337 #ifdef INFINITY
1338 #define ECB_INFINITY INFINITY
1339 #else
1340 #define ECB_INFINITY HUGE_VAL
1341 #endif
1342
1343 #ifdef NAN
1344 #define ECB_NAN NAN
1345 #else
1346 #define ECB_NAN ECB_INFINITY
1347 #endif
1348
1349 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1350 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1351 #define ecb_frexpf(x,e) frexpf ((x), (e))
1352 #else
1353 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1354 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1355 #endif
1356
1357 /* convert a float to ieee single/binary32 */
1358 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1359 ecb_function_ ecb_const uint32_t
1360 ecb_float_to_binary32 (float x)
1361 {
1362 uint32_t r;
1363
1364 #if ECB_STDFP
1365 memcpy (&r, &x, 4);
1366 #else
1367 /* slow emulation, works for anything but -0 */
1368 uint32_t m;
1369 int e;
1370
1371 if (x == 0e0f ) return 0x00000000U;
1372 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1373 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1374 if (x != x ) return 0x7fbfffffU;
1375
1376 m = ecb_frexpf (x, &e) * 0x1000000U;
1377
1378 r = m & 0x80000000U;
1379
1380 if (r)
1381 m = -m;
1382
1383 if (e <= -126)
1384 {
1385 m &= 0xffffffU;
1386 m >>= (-125 - e);
1387 e = -126;
1388 }
1389
1390 r |= (e + 126) << 23;
1391 r |= m & 0x7fffffU;
1392 #endif
1393
1394 return r;
1395 }
1396
1397 /* converts an ieee single/binary32 to a float */
1398 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1399 ecb_function_ ecb_const float
1400 ecb_binary32_to_float (uint32_t x)
1401 {
1402 float r;
1403
1404 #if ECB_STDFP
1405 memcpy (&r, &x, 4);
1406 #else
1407 /* emulation, only works for normals and subnormals and +0 */
1408 int neg = x >> 31;
1409 int e = (x >> 23) & 0xffU;
1410
1411 x &= 0x7fffffU;
1412
1413 if (e)
1414 x |= 0x800000U;
1415 else
1416 e = 1;
1417
1418 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1419 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1420
1421 r = neg ? -r : r;
1422 #endif
1423
1424 return r;
1425 }
1426
1427 /* convert a double to ieee double/binary64 */
1428 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1429 ecb_function_ ecb_const uint64_t
1430 ecb_double_to_binary64 (double x)
1431 {
1432 uint64_t r;
1433
1434 #if ECB_STDFP
1435 memcpy (&r, &x, 8);
1436 #else
1437 /* slow emulation, works for anything but -0 */
1438 uint64_t m;
1439 int e;
1440
1441 if (x == 0e0 ) return 0x0000000000000000U;
1442 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1443 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1444 if (x != x ) return 0X7ff7ffffffffffffU;
1445
1446 m = frexp (x, &e) * 0x20000000000000U;
1447
1448 r = m & 0x8000000000000000;;
1449
1450 if (r)
1451 m = -m;
1452
1453 if (e <= -1022)
1454 {
1455 m &= 0x1fffffffffffffU;
1456 m >>= (-1021 - e);
1457 e = -1022;
1458 }
1459
1460 r |= ((uint64_t)(e + 1022)) << 52;
1461 r |= m & 0xfffffffffffffU;
1462 #endif
1463
1464 return r;
1465 }
1466
1467 /* converts an ieee double/binary64 to a double */
1468 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1469 ecb_function_ ecb_const double
1470 ecb_binary64_to_double (uint64_t x)
1471 {
1472 double r;
1473
1474 #if ECB_STDFP
1475 memcpy (&r, &x, 8);
1476 #else
1477 /* emulation, only works for normals and subnormals and +0 */
1478 int neg = x >> 63;
1479 int e = (x >> 52) & 0x7ffU;
1480
1481 x &= 0xfffffffffffffU;
1482
1483 if (e)
1484 x |= 0x10000000000000U;
1485 else
1486 e = 1;
1487
1488 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1489 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1490
1491 r = neg ? -r : r;
1492 #endif
1493
1494 return r;
1495 }
1496
1497 /* convert a float to ieee half/binary16 */
1498 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1499 ecb_function_ ecb_const uint16_t
1500 ecb_float_to_binary16 (float x)
1501 {
1502 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1503 }
1504
1505 /* convert an ieee half/binary16 to float */
1506 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1507 ecb_function_ ecb_const float
1508 ecb_binary16_to_float (uint16_t x)
1509 {
1510 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1511 }
1512
1513#endif
1514
1515#endif
1516
1517/* ECB.H END */
1518
1519#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1520/* if your architecture doesn't need memory fences, e.g. because it is
1521 * single-cpu/core, or if you use libev in a project that doesn't use libev
1522 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
1523 * libev, in which cases the memory fences become nops.
1524 * alternatively, you can remove this #error and link against libpthread,
1525 * which will then provide the memory fences.
1526 */
1527# error "memory fences not defined for your architecture, please report"
1528#endif
1529
1530#ifndef ECB_MEMORY_FENCE
1531# define ECB_MEMORY_FENCE do { } while (0)
1532# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1533# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1534#endif
1535
1536#define expect_false(cond) ecb_expect_false (cond)
1537#define expect_true(cond) ecb_expect_true (cond)
1538#define noinline ecb_noinline
1539
478#define inline_size static inline 1540#define inline_size ecb_inline
479 1541
480#if EV_MINIMAL 1542#if EV_FEATURE_CODE
481# define inline_speed static noinline
482#else
483# define inline_speed static inline 1543# define inline_speed ecb_inline
1544#else
1545# define inline_speed noinline static
484#endif 1546#endif
485 1547
486#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1548#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
487 1549
488#if EV_MINPRI == EV_MAXPRI 1550#if EV_MINPRI == EV_MAXPRI
489# define ABSPRI(w) (((W)w), 0) 1551# define ABSPRI(w) (((W)w), 0)
490#else 1552#else
491# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1553# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
492#endif 1554#endif
493 1555
494#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1556#define EMPTY /* required for microsofts broken pseudo-c compiler */
495#define EMPTY2(a,b) /* used to suppress some warnings */
496 1557
497typedef ev_watcher *W; 1558typedef ev_watcher *W;
498typedef ev_watcher_list *WL; 1559typedef ev_watcher_list *WL;
499typedef ev_watcher_time *WT; 1560typedef ev_watcher_time *WT;
500 1561
501#define ev_active(w) ((W)(w))->active 1562#define ev_active(w) ((W)(w))->active
502#define ev_at(w) ((WT)(w))->at 1563#define ev_at(w) ((WT)(w))->at
503 1564
504#if EV_USE_REALTIME 1565#if EV_USE_REALTIME
505/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 1566/* sig_atomic_t is used to avoid per-thread variables or locking but still */
506/* giving it a reasonably high chance of working on typical architetcures */ 1567/* giving it a reasonably high chance of working on typical architectures */
507static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 1568static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
508#endif 1569#endif
509 1570
510#if EV_USE_MONOTONIC 1571#if EV_USE_MONOTONIC
511static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 1572static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
… …
525# include "ev_win32.c" 1586# include "ev_win32.c"
526#endif 1587#endif
527 1588
528/*****************************************************************************/ 1589/*****************************************************************************/
529 1590
1591/* define a suitable floor function (only used by periodics atm) */
1592
1593#if EV_USE_FLOOR
1594# include <math.h>
1595# define ev_floor(v) floor (v)
1596#else
1597
1598#include <float.h>
1599
1600/* a floor() replacement function, should be independent of ev_tstamp type */
1601noinline
1602static ev_tstamp
1603ev_floor (ev_tstamp v)
1604{
1605 /* the choice of shift factor is not terribly important */
1606#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1607 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1608#else
1609 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1610#endif
1611
1612 /* argument too large for an unsigned long? */
1613 if (expect_false (v >= shift))
1614 {
1615 ev_tstamp f;
1616
1617 if (v == v - 1.)
1618 return v; /* very large number */
1619
1620 f = shift * ev_floor (v * (1. / shift));
1621 return f + ev_floor (v - f);
1622 }
1623
1624 /* special treatment for negative args? */
1625 if (expect_false (v < 0.))
1626 {
1627 ev_tstamp f = -ev_floor (-v);
1628
1629 return f - (f == v ? 0 : 1);
1630 }
1631
1632 /* fits into an unsigned long */
1633 return (unsigned long)v;
1634}
1635
1636#endif
1637
1638/*****************************************************************************/
1639
1640#ifdef __linux
1641# include <sys/utsname.h>
1642#endif
1643
1644noinline ecb_cold
1645static unsigned int
1646ev_linux_version (void)
1647{
1648#ifdef __linux
1649 unsigned int v = 0;
1650 struct utsname buf;
1651 int i;
1652 char *p = buf.release;
1653
1654 if (uname (&buf))
1655 return 0;
1656
1657 for (i = 3+1; --i; )
1658 {
1659 unsigned int c = 0;
1660
1661 for (;;)
1662 {
1663 if (*p >= '0' && *p <= '9')
1664 c = c * 10 + *p++ - '0';
1665 else
1666 {
1667 p += *p == '.';
1668 break;
1669 }
1670 }
1671
1672 v = (v << 8) | c;
1673 }
1674
1675 return v;
1676#else
1677 return 0;
1678#endif
1679}
1680
1681/*****************************************************************************/
1682
530#if EV_AVOID_STDIO 1683#if EV_AVOID_STDIO
531static void noinline 1684noinline ecb_cold
1685static void
532ev_printerr (const char *msg) 1686ev_printerr (const char *msg)
533{ 1687{
534 write (STDERR_FILENO, msg, strlen (msg)); 1688 write (STDERR_FILENO, msg, strlen (msg));
535} 1689}
536#endif 1690#endif
537 1691
538static void (*syserr_cb)(const char *msg); 1692static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
539 1693
1694ecb_cold
540void 1695void
541ev_set_syserr_cb (void (*cb)(const char *msg)) 1696ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
542{ 1697{
543 syserr_cb = cb; 1698 syserr_cb = cb;
544} 1699}
545 1700
546static void noinline 1701noinline ecb_cold
1702static void
547ev_syserr (const char *msg) 1703ev_syserr (const char *msg)
548{ 1704{
549 if (!msg) 1705 if (!msg)
550 msg = "(libev) system error"; 1706 msg = "(libev) system error";
551 1707
552 if (syserr_cb) 1708 if (syserr_cb)
553 syserr_cb (msg); 1709 syserr_cb (msg);
554 else 1710 else
555 { 1711 {
556#if EV_AVOID_STDIO 1712#if EV_AVOID_STDIO
557 const char *err = strerror (errno);
558
559 ev_printerr (msg); 1713 ev_printerr (msg);
560 ev_printerr (": "); 1714 ev_printerr (": ");
561 ev_printerr (err); 1715 ev_printerr (strerror (errno));
562 ev_printerr ("\n"); 1716 ev_printerr ("\n");
563#else 1717#else
564 perror (msg); 1718 perror (msg);
565#endif 1719#endif
566 abort (); 1720 abort ();
567 } 1721 }
568} 1722}
569 1723
570static void * 1724static void *
571ev_realloc_emul (void *ptr, long size) 1725ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
572{ 1726{
573 /* some systems, notably openbsd and darwin, fail to properly 1727 /* some systems, notably openbsd and darwin, fail to properly
574 * implement realloc (x, 0) (as required by both ansi c-98 and 1728 * implement realloc (x, 0) (as required by both ansi c-89 and
575 * the single unix specification, so work around them here. 1729 * the single unix specification, so work around them here.
1730 * recently, also (at least) fedora and debian started breaking it,
1731 * despite documenting it otherwise.
576 */ 1732 */
577 1733
578 if (size) 1734 if (size)
579 return realloc (ptr, size); 1735 return realloc (ptr, size);
580 1736
581 free (ptr); 1737 free (ptr);
582 return 0; 1738 return 0;
583} 1739}
584 1740
585static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1741static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
586 1742
1743ecb_cold
587void 1744void
588ev_set_allocator (void *(*cb)(void *ptr, long size)) 1745ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
589{ 1746{
590 alloc = cb; 1747 alloc = cb;
591} 1748}
592 1749
593inline_speed void * 1750inline_speed void *
… …
596 ptr = alloc (ptr, size); 1753 ptr = alloc (ptr, size);
597 1754
598 if (!ptr && size) 1755 if (!ptr && size)
599 { 1756 {
600#if EV_AVOID_STDIO 1757#if EV_AVOID_STDIO
601 ev_printerr ("libev: memory allocation failed, aborting.\n"); 1758 ev_printerr ("(libev) memory allocation failed, aborting.\n");
602#else 1759#else
603 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1760 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
604#endif 1761#endif
605 abort (); 1762 abort ();
606 } 1763 }
607 1764
608 return ptr; 1765 return ptr;
… …
620typedef struct 1777typedef struct
621{ 1778{
622 WL head; 1779 WL head;
623 unsigned char events; /* the events watched for */ 1780 unsigned char events; /* the events watched for */
624 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */ 1781 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
625 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1782 unsigned char emask; /* some backends store the actual kernel mask in here */
626 unsigned char unused; 1783 unsigned char unused;
627#if EV_USE_EPOLL 1784#if EV_USE_EPOLL
628 unsigned int egen; /* generation counter to counter epoll bugs */ 1785 unsigned int egen; /* generation counter to counter epoll bugs */
629#endif 1786#endif
630#if EV_SELECT_IS_WINSOCKET 1787#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
631 SOCKET handle; 1788 SOCKET handle;
1789#endif
1790#if EV_USE_IOCP
1791 OVERLAPPED or, ow;
632#endif 1792#endif
633} ANFD; 1793} ANFD;
634 1794
635/* stores the pending event set for a given watcher */ 1795/* stores the pending event set for a given watcher */
636typedef struct 1796typedef struct
… …
678 #undef VAR 1838 #undef VAR
679 }; 1839 };
680 #include "ev_wrap.h" 1840 #include "ev_wrap.h"
681 1841
682 static struct ev_loop default_loop_struct; 1842 static struct ev_loop default_loop_struct;
683 struct ev_loop *ev_default_loop_ptr; 1843 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
684 1844
685#else 1845#else
686 1846
687 ev_tstamp ev_rt_now; 1847 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
688 #define VAR(name,decl) static decl; 1848 #define VAR(name,decl) static decl;
689 #include "ev_vars.h" 1849 #include "ev_vars.h"
690 #undef VAR 1850 #undef VAR
691 1851
692 static int ev_default_loop_ptr; 1852 static int ev_default_loop_ptr;
693 1853
694#endif 1854#endif
695 1855
696#if EV_MINIMAL < 2 1856#if EV_FEATURE_API
697# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 1857# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
698# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 1858# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
699# define EV_INVOKE_PENDING invoke_cb (EV_A) 1859# define EV_INVOKE_PENDING invoke_cb (EV_A)
700#else 1860#else
701# define EV_RELEASE_CB (void)0 1861# define EV_RELEASE_CB (void)0
702# define EV_ACQUIRE_CB (void)0 1862# define EV_ACQUIRE_CB (void)0
703# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1863# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
704#endif 1864#endif
705 1865
706#define EVUNLOOP_RECURSE 0x80 1866#define EVBREAK_RECURSE 0x80
707 1867
708/*****************************************************************************/ 1868/*****************************************************************************/
709 1869
710#ifndef EV_HAVE_EV_TIME 1870#ifndef EV_HAVE_EV_TIME
711ev_tstamp 1871ev_tstamp
712ev_time (void) 1872ev_time (void) EV_NOEXCEPT
713{ 1873{
714#if EV_USE_REALTIME 1874#if EV_USE_REALTIME
715 if (expect_true (have_realtime)) 1875 if (expect_true (have_realtime))
716 { 1876 {
717 struct timespec ts; 1877 struct timespec ts;
… …
741 return ev_time (); 1901 return ev_time ();
742} 1902}
743 1903
744#if EV_MULTIPLICITY 1904#if EV_MULTIPLICITY
745ev_tstamp 1905ev_tstamp
746ev_now (EV_P) 1906ev_now (EV_P) EV_NOEXCEPT
747{ 1907{
748 return ev_rt_now; 1908 return ev_rt_now;
749} 1909}
750#endif 1910#endif
751 1911
752void 1912void
753ev_sleep (ev_tstamp delay) 1913ev_sleep (ev_tstamp delay) EV_NOEXCEPT
754{ 1914{
755 if (delay > 0.) 1915 if (delay > 0.)
756 { 1916 {
757#if EV_USE_NANOSLEEP 1917#if EV_USE_NANOSLEEP
758 struct timespec ts; 1918 struct timespec ts;
759 1919
760 ts.tv_sec = (time_t)delay; 1920 EV_TS_SET (ts, delay);
761 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
762
763 nanosleep (&ts, 0); 1921 nanosleep (&ts, 0);
764#elif defined(_WIN32) 1922#elif defined _WIN32
1923 /* maybe this should round up, as ms is very low resolution */
1924 /* compared to select (µs) or nanosleep (ns) */
765 Sleep ((unsigned long)(delay * 1e3)); 1925 Sleep ((unsigned long)(delay * 1e3));
766#else 1926#else
767 struct timeval tv; 1927 struct timeval tv;
768
769 tv.tv_sec = (time_t)delay;
770 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
771 1928
772 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1929 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
773 /* something not guaranteed by newer posix versions, but guaranteed */ 1930 /* something not guaranteed by newer posix versions, but guaranteed */
774 /* by older ones */ 1931 /* by older ones */
1932 EV_TV_SET (tv, delay);
775 select (0, 0, 0, 0, &tv); 1933 select (0, 0, 0, 0, &tv);
776#endif 1934#endif
777 } 1935 }
778} 1936}
779 1937
780/*****************************************************************************/ 1938/*****************************************************************************/
781 1939
782#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1940#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
783 1941
784/* find a suitable new size for the given array, */ 1942/* find a suitable new size for the given array, */
785/* hopefully by rounding to a ncie-to-malloc size */ 1943/* hopefully by rounding to a nice-to-malloc size */
786inline_size int 1944inline_size int
787array_nextsize (int elem, int cur, int cnt) 1945array_nextsize (int elem, int cur, int cnt)
788{ 1946{
789 int ncur = cur + 1; 1947 int ncur = cur + 1;
790 1948
791 do 1949 do
792 ncur <<= 1; 1950 ncur <<= 1;
793 while (cnt > ncur); 1951 while (cnt > ncur);
794 1952
795 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1953 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
796 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1954 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
797 { 1955 {
798 ncur *= elem; 1956 ncur *= elem;
799 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1957 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
800 ncur = ncur - sizeof (void *) * 4; 1958 ncur = ncur - sizeof (void *) * 4;
… …
802 } 1960 }
803 1961
804 return ncur; 1962 return ncur;
805} 1963}
806 1964
807static noinline void * 1965noinline ecb_cold
1966static void *
808array_realloc (int elem, void *base, int *cur, int cnt) 1967array_realloc (int elem, void *base, int *cur, int cnt)
809{ 1968{
810 *cur = array_nextsize (elem, *cur, cnt); 1969 *cur = array_nextsize (elem, *cur, cnt);
811 return ev_realloc (base, elem * *cur); 1970 return ev_realloc (base, elem * *cur);
812} 1971}
813 1972
1973#define array_needsize_noinit(base,count)
1974
814#define array_init_zero(base,count) \ 1975#define array_needsize_zerofill(base,count) \
815 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1976 memset ((void *)(base), 0, sizeof (*(base)) * (count))
816 1977
817#define array_needsize(type,base,cur,cnt,init) \ 1978#define array_needsize(type,base,cur,cnt,init) \
818 if (expect_false ((cnt) > (cur))) \ 1979 if (expect_false ((cnt) > (cur))) \
819 { \ 1980 { \
820 int ocur_ = (cur); \ 1981 ecb_unused int ocur_ = (cur); \
821 (base) = (type *)array_realloc \ 1982 (base) = (type *)array_realloc \
822 (sizeof (type), (base), &(cur), (cnt)); \ 1983 (sizeof (type), (base), &(cur), (cnt)); \
823 init ((base) + (ocur_), (cur) - ocur_); \ 1984 init ((base) + (ocur_), (cur) - ocur_); \
824 } 1985 }
825 1986
… …
837 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 1998 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
838 1999
839/*****************************************************************************/ 2000/*****************************************************************************/
840 2001
841/* dummy callback for pending events */ 2002/* dummy callback for pending events */
842static void noinline 2003noinline
2004static void
843pendingcb (EV_P_ ev_prepare *w, int revents) 2005pendingcb (EV_P_ ev_prepare *w, int revents)
844{ 2006{
845} 2007}
846 2008
847void noinline 2009noinline
2010void
848ev_feed_event (EV_P_ void *w, int revents) 2011ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
849{ 2012{
850 W w_ = (W)w; 2013 W w_ = (W)w;
851 int pri = ABSPRI (w_); 2014 int pri = ABSPRI (w_);
852 2015
853 if (expect_false (w_->pending)) 2016 if (expect_false (w_->pending))
854 pendings [pri][w_->pending - 1].events |= revents; 2017 pendings [pri][w_->pending - 1].events |= revents;
855 else 2018 else
856 { 2019 {
857 w_->pending = ++pendingcnt [pri]; 2020 w_->pending = ++pendingcnt [pri];
858 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2021 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
859 pendings [pri][w_->pending - 1].w = w_; 2022 pendings [pri][w_->pending - 1].w = w_;
860 pendings [pri][w_->pending - 1].events = revents; 2023 pendings [pri][w_->pending - 1].events = revents;
861 } 2024 }
2025
2026 pendingpri = NUMPRI - 1;
862} 2027}
863 2028
864inline_speed void 2029inline_speed void
865feed_reverse (EV_P_ W w) 2030feed_reverse (EV_P_ W w)
866{ 2031{
867 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2032 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
868 rfeeds [rfeedcnt++] = w; 2033 rfeeds [rfeedcnt++] = w;
869} 2034}
870 2035
871inline_size void 2036inline_size void
872feed_reverse_done (EV_P_ int revents) 2037feed_reverse_done (EV_P_ int revents)
… …
886} 2051}
887 2052
888/*****************************************************************************/ 2053/*****************************************************************************/
889 2054
890inline_speed void 2055inline_speed void
891fd_event_nc (EV_P_ int fd, int revents) 2056fd_event_nocheck (EV_P_ int fd, int revents)
892{ 2057{
893 ANFD *anfd = anfds + fd; 2058 ANFD *anfd = anfds + fd;
894 ev_io *w; 2059 ev_io *w;
895 2060
896 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2061 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
908fd_event (EV_P_ int fd, int revents) 2073fd_event (EV_P_ int fd, int revents)
909{ 2074{
910 ANFD *anfd = anfds + fd; 2075 ANFD *anfd = anfds + fd;
911 2076
912 if (expect_true (!anfd->reify)) 2077 if (expect_true (!anfd->reify))
913 fd_event_nc (EV_A_ fd, revents); 2078 fd_event_nocheck (EV_A_ fd, revents);
914} 2079}
915 2080
916void 2081void
917ev_feed_fd_event (EV_P_ int fd, int revents) 2082ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
918{ 2083{
919 if (fd >= 0 && fd < anfdmax) 2084 if (fd >= 0 && fd < anfdmax)
920 fd_event_nc (EV_A_ fd, revents); 2085 fd_event_nocheck (EV_A_ fd, revents);
921} 2086}
922 2087
923/* make sure the external fd watch events are in-sync */ 2088/* make sure the external fd watch events are in-sync */
924/* with the kernel/libev internal state */ 2089/* with the kernel/libev internal state */
925inline_size void 2090inline_size void
926fd_reify (EV_P) 2091fd_reify (EV_P)
927{ 2092{
928 int i; 2093 int i;
929 2094
2095#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
2096 for (i = 0; i < fdchangecnt; ++i)
2097 {
2098 int fd = fdchanges [i];
2099 ANFD *anfd = anfds + fd;
2100
2101 if (anfd->reify & EV__IOFDSET && anfd->head)
2102 {
2103 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
2104
2105 if (handle != anfd->handle)
2106 {
2107 unsigned long arg;
2108
2109 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
2110
2111 /* handle changed, but fd didn't - we need to do it in two steps */
2112 backend_modify (EV_A_ fd, anfd->events, 0);
2113 anfd->events = 0;
2114 anfd->handle = handle;
2115 }
2116 }
2117 }
2118#endif
2119
930 for (i = 0; i < fdchangecnt; ++i) 2120 for (i = 0; i < fdchangecnt; ++i)
931 { 2121 {
932 int fd = fdchanges [i]; 2122 int fd = fdchanges [i];
933 ANFD *anfd = anfds + fd; 2123 ANFD *anfd = anfds + fd;
934 ev_io *w; 2124 ev_io *w;
935 2125
936 unsigned char events = 0; 2126 unsigned char o_events = anfd->events;
2127 unsigned char o_reify = anfd->reify;
937 2128
938 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2129 anfd->reify = 0;
939 events |= (unsigned char)w->events;
940 2130
941#if EV_SELECT_IS_WINSOCKET 2131 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
942 if (events)
943 { 2132 {
944 unsigned long arg; 2133 anfd->events = 0;
945 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 2134
946 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 2135 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
2136 anfd->events |= (unsigned char)w->events;
2137
2138 if (o_events != anfd->events)
2139 o_reify = EV__IOFDSET; /* actually |= */
947 } 2140 }
948#endif
949 2141
950 { 2142 if (o_reify & EV__IOFDSET)
951 unsigned char o_events = anfd->events;
952 unsigned char o_reify = anfd->reify;
953
954 anfd->reify = 0;
955 anfd->events = events;
956
957 if (o_events != events || o_reify & EV__IOFDSET)
958 backend_modify (EV_A_ fd, o_events, events); 2143 backend_modify (EV_A_ fd, o_events, anfd->events);
959 }
960 } 2144 }
961 2145
962 fdchangecnt = 0; 2146 fdchangecnt = 0;
963} 2147}
964 2148
965/* something about the given fd changed */ 2149/* something about the given fd changed */
966inline_size void 2150inline_size
2151void
967fd_change (EV_P_ int fd, int flags) 2152fd_change (EV_P_ int fd, int flags)
968{ 2153{
969 unsigned char reify = anfds [fd].reify; 2154 unsigned char reify = anfds [fd].reify;
970 anfds [fd].reify |= flags; 2155 anfds [fd].reify |= flags;
971 2156
972 if (expect_true (!reify)) 2157 if (expect_true (!reify))
973 { 2158 {
974 ++fdchangecnt; 2159 ++fdchangecnt;
975 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2160 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
976 fdchanges [fdchangecnt - 1] = fd; 2161 fdchanges [fdchangecnt - 1] = fd;
977 } 2162 }
978} 2163}
979 2164
980/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2165/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
981inline_speed void 2166inline_speed ecb_cold void
982fd_kill (EV_P_ int fd) 2167fd_kill (EV_P_ int fd)
983{ 2168{
984 ev_io *w; 2169 ev_io *w;
985 2170
986 while ((w = (ev_io *)anfds [fd].head)) 2171 while ((w = (ev_io *)anfds [fd].head))
… …
988 ev_io_stop (EV_A_ w); 2173 ev_io_stop (EV_A_ w);
989 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2174 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
990 } 2175 }
991} 2176}
992 2177
993/* check whether the given fd is atcually valid, for error recovery */ 2178/* check whether the given fd is actually valid, for error recovery */
994inline_size int 2179inline_size ecb_cold int
995fd_valid (int fd) 2180fd_valid (int fd)
996{ 2181{
997#ifdef _WIN32 2182#ifdef _WIN32
998 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2183 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
999#else 2184#else
1000 return fcntl (fd, F_GETFD) != -1; 2185 return fcntl (fd, F_GETFD) != -1;
1001#endif 2186#endif
1002} 2187}
1003 2188
1004/* called on EBADF to verify fds */ 2189/* called on EBADF to verify fds */
1005static void noinline 2190noinline ecb_cold
2191static void
1006fd_ebadf (EV_P) 2192fd_ebadf (EV_P)
1007{ 2193{
1008 int fd; 2194 int fd;
1009 2195
1010 for (fd = 0; fd < anfdmax; ++fd) 2196 for (fd = 0; fd < anfdmax; ++fd)
… …
1012 if (!fd_valid (fd) && errno == EBADF) 2198 if (!fd_valid (fd) && errno == EBADF)
1013 fd_kill (EV_A_ fd); 2199 fd_kill (EV_A_ fd);
1014} 2200}
1015 2201
1016/* called on ENOMEM in select/poll to kill some fds and retry */ 2202/* called on ENOMEM in select/poll to kill some fds and retry */
1017static void noinline 2203noinline ecb_cold
2204static void
1018fd_enomem (EV_P) 2205fd_enomem (EV_P)
1019{ 2206{
1020 int fd; 2207 int fd;
1021 2208
1022 for (fd = anfdmax; fd--; ) 2209 for (fd = anfdmax; fd--; )
… …
1026 break; 2213 break;
1027 } 2214 }
1028} 2215}
1029 2216
1030/* usually called after fork if backend needs to re-arm all fds from scratch */ 2217/* usually called after fork if backend needs to re-arm all fds from scratch */
1031static void noinline 2218noinline
2219static void
1032fd_rearm_all (EV_P) 2220fd_rearm_all (EV_P)
1033{ 2221{
1034 int fd; 2222 int fd;
1035 2223
1036 for (fd = 0; fd < anfdmax; ++fd) 2224 for (fd = 0; fd < anfdmax; ++fd)
… …
1040 anfds [fd].emask = 0; 2228 anfds [fd].emask = 0;
1041 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); 2229 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
1042 } 2230 }
1043} 2231}
1044 2232
2233/* used to prepare libev internal fd's */
2234/* this is not fork-safe */
2235inline_speed void
2236fd_intern (int fd)
2237{
2238#ifdef _WIN32
2239 unsigned long arg = 1;
2240 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
2241#else
2242 fcntl (fd, F_SETFD, FD_CLOEXEC);
2243 fcntl (fd, F_SETFL, O_NONBLOCK);
2244#endif
2245}
2246
1045/*****************************************************************************/ 2247/*****************************************************************************/
1046 2248
1047/* 2249/*
1048 * the heap functions want a real array index. array index 0 uis guaranteed to not 2250 * the heap functions want a real array index. array index 0 is guaranteed to not
1049 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 2251 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
1050 * the branching factor of the d-tree. 2252 * the branching factor of the d-tree.
1051 */ 2253 */
1052 2254
1053/* 2255/*
… …
1201 2403
1202static ANSIG signals [EV_NSIG - 1]; 2404static ANSIG signals [EV_NSIG - 1];
1203 2405
1204/*****************************************************************************/ 2406/*****************************************************************************/
1205 2407
1206/* used to prepare libev internal fd's */ 2408#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1207/* this is not fork-safe */ 2409
2410noinline ecb_cold
2411static void
2412evpipe_init (EV_P)
2413{
2414 if (!ev_is_active (&pipe_w))
2415 {
2416 int fds [2];
2417
2418# if EV_USE_EVENTFD
2419 fds [0] = -1;
2420 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
2421 if (fds [1] < 0 && errno == EINVAL)
2422 fds [1] = eventfd (0, 0);
2423
2424 if (fds [1] < 0)
2425# endif
2426 {
2427 while (pipe (fds))
2428 ev_syserr ("(libev) error creating signal/async pipe");
2429
2430 fd_intern (fds [0]);
2431 }
2432
2433 evpipe [0] = fds [0];
2434
2435 if (evpipe [1] < 0)
2436 evpipe [1] = fds [1]; /* first call, set write fd */
2437 else
2438 {
2439 /* on subsequent calls, do not change evpipe [1] */
2440 /* so that evpipe_write can always rely on its value. */
2441 /* this branch does not do anything sensible on windows, */
2442 /* so must not be executed on windows */
2443
2444 dup2 (fds [1], evpipe [1]);
2445 close (fds [1]);
2446 }
2447
2448 fd_intern (evpipe [1]);
2449
2450 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2451 ev_io_start (EV_A_ &pipe_w);
2452 ev_unref (EV_A); /* watcher should not keep loop alive */
2453 }
2454}
2455
1208inline_speed void 2456inline_speed void
1209fd_intern (int fd) 2457evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1210{ 2458{
1211#ifdef _WIN32 2459 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1212 unsigned long arg = 1;
1213 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1214#else
1215 fcntl (fd, F_SETFD, FD_CLOEXEC);
1216 fcntl (fd, F_SETFL, O_NONBLOCK);
1217#endif
1218}
1219 2460
1220static void noinline 2461 if (expect_true (*flag))
1221evpipe_init (EV_P) 2462 return;
1222{ 2463
1223 if (!ev_is_active (&pipe_w)) 2464 *flag = 1;
2465 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2466
2467 pipe_write_skipped = 1;
2468
2469 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2470
2471 if (pipe_write_wanted)
1224 { 2472 {
2473 int old_errno;
2474
2475 pipe_write_skipped = 0;
2476 ECB_MEMORY_FENCE_RELEASE;
2477
2478 old_errno = errno; /* save errno because write will clobber it */
2479
1225#if EV_USE_EVENTFD 2480#if EV_USE_EVENTFD
1226 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2481 if (evpipe [0] < 0)
1227 if (evfd < 0 && errno == EINVAL)
1228 evfd = eventfd (0, 0);
1229
1230 if (evfd >= 0)
1231 { 2482 {
1232 evpipe [0] = -1; 2483 uint64_t counter = 1;
1233 fd_intern (evfd); /* doing it twice doesn't hurt */ 2484 write (evpipe [1], &counter, sizeof (uint64_t));
1234 ev_io_set (&pipe_w, evfd, EV_READ);
1235 } 2485 }
1236 else 2486 else
1237#endif 2487#endif
1238 { 2488 {
1239 while (pipe (evpipe)) 2489#ifdef _WIN32
1240 ev_syserr ("(libev) error creating signal/async pipe"); 2490 WSABUF buf;
1241 2491 DWORD sent;
1242 fd_intern (evpipe [0]); 2492 buf.buf = (char *)&buf;
1243 fd_intern (evpipe [1]); 2493 buf.len = 1;
1244 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2494 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2495#else
2496 write (evpipe [1], &(evpipe [1]), 1);
2497#endif
1245 } 2498 }
1246
1247 ev_io_start (EV_A_ &pipe_w);
1248 ev_unref (EV_A); /* watcher should not keep loop alive */
1249 }
1250}
1251
1252inline_size void
1253evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1254{
1255 if (!*flag)
1256 {
1257 int old_errno = errno; /* save errno because write might clobber it */
1258
1259 *flag = 1;
1260
1261#if EV_USE_EVENTFD
1262 if (evfd >= 0)
1263 {
1264 uint64_t counter = 1;
1265 write (evfd, &counter, sizeof (uint64_t));
1266 }
1267 else
1268#endif
1269 write (evpipe [1], &old_errno, 1);
1270 2499
1271 errno = old_errno; 2500 errno = old_errno;
1272 } 2501 }
1273} 2502}
1274 2503
… …
1277static void 2506static void
1278pipecb (EV_P_ ev_io *iow, int revents) 2507pipecb (EV_P_ ev_io *iow, int revents)
1279{ 2508{
1280 int i; 2509 int i;
1281 2510
2511 if (revents & EV_READ)
2512 {
1282#if EV_USE_EVENTFD 2513#if EV_USE_EVENTFD
1283 if (evfd >= 0) 2514 if (evpipe [0] < 0)
1284 { 2515 {
1285 uint64_t counter; 2516 uint64_t counter;
1286 read (evfd, &counter, sizeof (uint64_t)); 2517 read (evpipe [1], &counter, sizeof (uint64_t));
1287 } 2518 }
1288 else 2519 else
1289#endif 2520#endif
1290 { 2521 {
1291 char dummy; 2522 char dummy[4];
2523#ifdef _WIN32
2524 WSABUF buf;
2525 DWORD recvd;
2526 DWORD flags = 0;
2527 buf.buf = dummy;
2528 buf.len = sizeof (dummy);
2529 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2530#else
1292 read (evpipe [0], &dummy, 1); 2531 read (evpipe [0], &dummy, sizeof (dummy));
2532#endif
2533 }
1293 } 2534 }
1294 2535
2536 pipe_write_skipped = 0;
2537
2538 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2539
2540#if EV_SIGNAL_ENABLE
1295 if (sig_pending) 2541 if (sig_pending)
1296 { 2542 {
1297 sig_pending = 0; 2543 sig_pending = 0;
2544
2545 ECB_MEMORY_FENCE;
1298 2546
1299 for (i = EV_NSIG - 1; i--; ) 2547 for (i = EV_NSIG - 1; i--; )
1300 if (expect_false (signals [i].pending)) 2548 if (expect_false (signals [i].pending))
1301 ev_feed_signal_event (EV_A_ i + 1); 2549 ev_feed_signal_event (EV_A_ i + 1);
1302 } 2550 }
2551#endif
1303 2552
1304#if EV_ASYNC_ENABLE 2553#if EV_ASYNC_ENABLE
1305 if (async_pending) 2554 if (async_pending)
1306 { 2555 {
1307 async_pending = 0; 2556 async_pending = 0;
2557
2558 ECB_MEMORY_FENCE;
1308 2559
1309 for (i = asynccnt; i--; ) 2560 for (i = asynccnt; i--; )
1310 if (asyncs [i]->sent) 2561 if (asyncs [i]->sent)
1311 { 2562 {
1312 asyncs [i]->sent = 0; 2563 asyncs [i]->sent = 0;
2564 ECB_MEMORY_FENCE_RELEASE;
1313 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2565 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1314 } 2566 }
1315 } 2567 }
1316#endif 2568#endif
1317} 2569}
1318 2570
1319/*****************************************************************************/ 2571/*****************************************************************************/
1320 2572
2573void
2574ev_feed_signal (int signum) EV_NOEXCEPT
2575{
2576#if EV_MULTIPLICITY
2577 EV_P;
2578 ECB_MEMORY_FENCE_ACQUIRE;
2579 EV_A = signals [signum - 1].loop;
2580
2581 if (!EV_A)
2582 return;
2583#endif
2584
2585 signals [signum - 1].pending = 1;
2586 evpipe_write (EV_A_ &sig_pending);
2587}
2588
1321static void 2589static void
1322ev_sighandler (int signum) 2590ev_sighandler (int signum)
1323{ 2591{
1324#if EV_MULTIPLICITY
1325 EV_P = signals [signum - 1].loop;
1326#endif
1327
1328#ifdef _WIN32 2592#ifdef _WIN32
1329 signal (signum, ev_sighandler); 2593 signal (signum, ev_sighandler);
1330#endif 2594#endif
1331 2595
1332 signals [signum - 1].pending = 1; 2596 ev_feed_signal (signum);
1333 evpipe_write (EV_A_ &sig_pending);
1334} 2597}
1335 2598
1336void noinline 2599noinline
2600void
1337ev_feed_signal_event (EV_P_ int signum) 2601ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
1338{ 2602{
1339 WL w; 2603 WL w;
1340 2604
1341 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2605 if (expect_false (signum <= 0 || signum >= EV_NSIG))
1342 return; 2606 return;
1343 2607
1344 --signum; 2608 --signum;
1345 2609
1346#if EV_MULTIPLICITY 2610#if EV_MULTIPLICITY
… …
1350 if (expect_false (signals [signum].loop != EV_A)) 2614 if (expect_false (signals [signum].loop != EV_A))
1351 return; 2615 return;
1352#endif 2616#endif
1353 2617
1354 signals [signum].pending = 0; 2618 signals [signum].pending = 0;
2619 ECB_MEMORY_FENCE_RELEASE;
1355 2620
1356 for (w = signals [signum].head; w; w = w->next) 2621 for (w = signals [signum].head; w; w = w->next)
1357 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2622 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1358} 2623}
1359 2624
… …
1375 break; 2640 break;
1376 } 2641 }
1377} 2642}
1378#endif 2643#endif
1379 2644
2645#endif
2646
1380/*****************************************************************************/ 2647/*****************************************************************************/
1381 2648
2649#if EV_CHILD_ENABLE
1382static WL childs [EV_PID_HASHSIZE]; 2650static WL childs [EV_PID_HASHSIZE];
1383
1384#ifndef _WIN32
1385 2651
1386static ev_signal childev; 2652static ev_signal childev;
1387 2653
1388#ifndef WIFCONTINUED 2654#ifndef WIFCONTINUED
1389# define WIFCONTINUED(status) 0 2655# define WIFCONTINUED(status) 0
… …
1394child_reap (EV_P_ int chain, int pid, int status) 2660child_reap (EV_P_ int chain, int pid, int status)
1395{ 2661{
1396 ev_child *w; 2662 ev_child *w;
1397 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2663 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1398 2664
1399 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2665 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1400 { 2666 {
1401 if ((w->pid == pid || !w->pid) 2667 if ((w->pid == pid || !w->pid)
1402 && (!traced || (w->flags & 1))) 2668 && (!traced || (w->flags & 1)))
1403 { 2669 {
1404 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2670 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1429 /* make sure we are called again until all children have been reaped */ 2695 /* make sure we are called again until all children have been reaped */
1430 /* we need to do it this way so that the callback gets called before we continue */ 2696 /* we need to do it this way so that the callback gets called before we continue */
1431 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2697 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1432 2698
1433 child_reap (EV_A_ pid, pid, status); 2699 child_reap (EV_A_ pid, pid, status);
1434 if (EV_PID_HASHSIZE > 1) 2700 if ((EV_PID_HASHSIZE) > 1)
1435 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2701 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1436} 2702}
1437 2703
1438#endif 2704#endif
1439 2705
1440/*****************************************************************************/ 2706/*****************************************************************************/
1441 2707
2708#if EV_USE_IOCP
2709# include "ev_iocp.c"
2710#endif
1442#if EV_USE_PORT 2711#if EV_USE_PORT
1443# include "ev_port.c" 2712# include "ev_port.c"
1444#endif 2713#endif
1445#if EV_USE_KQUEUE 2714#if EV_USE_KQUEUE
1446# include "ev_kqueue.c" 2715# include "ev_kqueue.c"
1447#endif 2716#endif
2717#if EV_USE_LINUXAIO
2718# include "ev_linuxaio.c"
2719#endif
1448#if EV_USE_EPOLL 2720#if EV_USE_EPOLL
1449# include "ev_epoll.c" 2721# include "ev_epoll.c"
1450#endif 2722#endif
1451#if EV_USE_POLL 2723#if EV_USE_POLL
1452# include "ev_poll.c" 2724# include "ev_poll.c"
1453#endif 2725#endif
1454#if EV_USE_SELECT 2726#if EV_USE_SELECT
1455# include "ev_select.c" 2727# include "ev_select.c"
1456#endif 2728#endif
1457 2729
1458int 2730ecb_cold int
1459ev_version_major (void) 2731ev_version_major (void) EV_NOEXCEPT
1460{ 2732{
1461 return EV_VERSION_MAJOR; 2733 return EV_VERSION_MAJOR;
1462} 2734}
1463 2735
1464int 2736ecb_cold int
1465ev_version_minor (void) 2737ev_version_minor (void) EV_NOEXCEPT
1466{ 2738{
1467 return EV_VERSION_MINOR; 2739 return EV_VERSION_MINOR;
1468} 2740}
1469 2741
1470/* return true if we are running with elevated privileges and should ignore env variables */ 2742/* return true if we are running with elevated privileges and should ignore env variables */
1471int inline_size 2743inline_size ecb_cold int
1472enable_secure (void) 2744enable_secure (void)
1473{ 2745{
1474#ifdef _WIN32 2746#ifdef _WIN32
1475 return 0; 2747 return 0;
1476#else 2748#else
1477 return getuid () != geteuid () 2749 return getuid () != geteuid ()
1478 || getgid () != getegid (); 2750 || getgid () != getegid ();
1479#endif 2751#endif
1480} 2752}
1481 2753
2754ecb_cold
1482unsigned int 2755unsigned int
1483ev_supported_backends (void) 2756ev_supported_backends (void) EV_NOEXCEPT
1484{ 2757{
1485 unsigned int flags = 0; 2758 unsigned int flags = 0;
1486 2759
1487 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2760 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1488 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2761 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
1489 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 2762 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2763 if (EV_USE_LINUXAIO) flags |= EVBACKEND_LINUXAIO;
1490 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 2764 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
1491 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2765 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
1492 2766
1493 return flags; 2767 return flags;
1494} 2768}
1495 2769
2770ecb_cold
1496unsigned int 2771unsigned int
1497ev_recommended_backends (void) 2772ev_recommended_backends (void) EV_NOEXCEPT
1498{ 2773{
1499 unsigned int flags = ev_supported_backends (); 2774 unsigned int flags = ev_supported_backends ();
1500 2775
1501#ifndef __NetBSD__ 2776#ifndef __NetBSD__
1502 /* kqueue is borked on everything but netbsd apparently */ 2777 /* kqueue is borked on everything but netbsd apparently */
… …
1506#ifdef __APPLE__ 2781#ifdef __APPLE__
1507 /* only select works correctly on that "unix-certified" platform */ 2782 /* only select works correctly on that "unix-certified" platform */
1508 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2783 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1509 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 2784 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1510#endif 2785#endif
2786#ifdef __FreeBSD__
2787 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2788#endif
1511 2789
1512 return flags; 2790 return flags;
1513} 2791}
1514 2792
2793ecb_cold
1515unsigned int 2794unsigned int
1516ev_embeddable_backends (void) 2795ev_embeddable_backends (void) EV_NOEXCEPT
1517{ 2796{
1518 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2797 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1519 2798
1520 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2799 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1521 /* please fix it and tell me how to detect the fix */ 2800 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1522 flags &= ~EVBACKEND_EPOLL; 2801 flags &= ~EVBACKEND_EPOLL;
1523 2802
1524 return flags; 2803 return flags;
1525} 2804}
1526 2805
1527unsigned int 2806unsigned int
1528ev_backend (EV_P) 2807ev_backend (EV_P) EV_NOEXCEPT
1529{ 2808{
1530 return backend; 2809 return backend;
1531} 2810}
1532 2811
1533#if EV_MINIMAL < 2 2812#if EV_FEATURE_API
1534unsigned int 2813unsigned int
1535ev_loop_count (EV_P) 2814ev_iteration (EV_P) EV_NOEXCEPT
1536{ 2815{
1537 return loop_count; 2816 return loop_count;
1538} 2817}
1539 2818
1540unsigned int 2819unsigned int
1541ev_loop_depth (EV_P) 2820ev_depth (EV_P) EV_NOEXCEPT
1542{ 2821{
1543 return loop_depth; 2822 return loop_depth;
1544} 2823}
1545 2824
1546void 2825void
1547ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2826ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1548{ 2827{
1549 io_blocktime = interval; 2828 io_blocktime = interval;
1550} 2829}
1551 2830
1552void 2831void
1553ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2832ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1554{ 2833{
1555 timeout_blocktime = interval; 2834 timeout_blocktime = interval;
1556} 2835}
1557 2836
1558void 2837void
1559ev_set_userdata (EV_P_ void *data) 2838ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
1560{ 2839{
1561 userdata = data; 2840 userdata = data;
1562} 2841}
1563 2842
1564void * 2843void *
1565ev_userdata (EV_P) 2844ev_userdata (EV_P) EV_NOEXCEPT
1566{ 2845{
1567 return userdata; 2846 return userdata;
1568} 2847}
1569 2848
2849void
1570void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2850ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
1571{ 2851{
1572 invoke_cb = invoke_pending_cb; 2852 invoke_cb = invoke_pending_cb;
1573} 2853}
1574 2854
2855void
1575void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2856ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
1576{ 2857{
1577 release_cb = release; 2858 release_cb = release;
1578 acquire_cb = acquire; 2859 acquire_cb = acquire;
1579} 2860}
1580#endif 2861#endif
1581 2862
1582/* initialise a loop structure, must be zero-initialised */ 2863/* initialise a loop structure, must be zero-initialised */
1583static void noinline 2864noinline ecb_cold
2865static void
1584loop_init (EV_P_ unsigned int flags) 2866loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
1585{ 2867{
1586 if (!backend) 2868 if (!backend)
1587 { 2869 {
2870 origflags = flags;
2871
1588#if EV_USE_REALTIME 2872#if EV_USE_REALTIME
1589 if (!have_realtime) 2873 if (!have_realtime)
1590 { 2874 {
1591 struct timespec ts; 2875 struct timespec ts;
1592 2876
… …
1614 if (!(flags & EVFLAG_NOENV) 2898 if (!(flags & EVFLAG_NOENV)
1615 && !enable_secure () 2899 && !enable_secure ()
1616 && getenv ("LIBEV_FLAGS")) 2900 && getenv ("LIBEV_FLAGS"))
1617 flags = atoi (getenv ("LIBEV_FLAGS")); 2901 flags = atoi (getenv ("LIBEV_FLAGS"));
1618 2902
1619 ev_rt_now = ev_time (); 2903 ev_rt_now = ev_time ();
1620 mn_now = get_clock (); 2904 mn_now = get_clock ();
1621 now_floor = mn_now; 2905 now_floor = mn_now;
1622 rtmn_diff = ev_rt_now - mn_now; 2906 rtmn_diff = ev_rt_now - mn_now;
1623#if EV_MINIMAL < 2 2907#if EV_FEATURE_API
1624 invoke_cb = ev_invoke_pending; 2908 invoke_cb = ev_invoke_pending;
1625#endif 2909#endif
1626 2910
1627 io_blocktime = 0.; 2911 io_blocktime = 0.;
1628 timeout_blocktime = 0.; 2912 timeout_blocktime = 0.;
1629 backend = 0; 2913 backend = 0;
1630 backend_fd = -1; 2914 backend_fd = -1;
1631 sig_pending = 0; 2915 sig_pending = 0;
1632#if EV_ASYNC_ENABLE 2916#if EV_ASYNC_ENABLE
1633 async_pending = 0; 2917 async_pending = 0;
1634#endif 2918#endif
2919 pipe_write_skipped = 0;
2920 pipe_write_wanted = 0;
2921 evpipe [0] = -1;
2922 evpipe [1] = -1;
1635#if EV_USE_INOTIFY 2923#if EV_USE_INOTIFY
1636 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2924 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1637#endif 2925#endif
1638#if EV_USE_SIGNALFD 2926#if EV_USE_SIGNALFD
1639 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2927 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1640#endif 2928#endif
1641 2929
1642 if (!(flags & 0x0000ffffU)) 2930 if (!(flags & EVBACKEND_MASK))
1643 flags |= ev_recommended_backends (); 2931 flags |= ev_recommended_backends ();
1644 2932
2933#if EV_USE_IOCP
2934 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2935#endif
1645#if EV_USE_PORT 2936#if EV_USE_PORT
1646 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2937 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1647#endif 2938#endif
1648#if EV_USE_KQUEUE 2939#if EV_USE_KQUEUE
1649 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2940 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
2941#endif
2942#if EV_USE_LINUXAIO
2943 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
1650#endif 2944#endif
1651#if EV_USE_EPOLL 2945#if EV_USE_EPOLL
1652 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 2946 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
1653#endif 2947#endif
1654#if EV_USE_POLL 2948#if EV_USE_POLL
1655 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 2949 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
1656#endif 2950#endif
1657#if EV_USE_SELECT 2951#if EV_USE_SELECT
1658 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2952 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
1659#endif 2953#endif
1660 2954
1661 ev_prepare_init (&pending_w, pendingcb); 2955 ev_prepare_init (&pending_w, pendingcb);
1662 2956
2957#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1663 ev_init (&pipe_w, pipecb); 2958 ev_init (&pipe_w, pipecb);
1664 ev_set_priority (&pipe_w, EV_MAXPRI); 2959 ev_set_priority (&pipe_w, EV_MAXPRI);
2960#endif
1665 } 2961 }
1666} 2962}
1667 2963
1668/* free up a loop structure */ 2964/* free up a loop structure */
1669static void noinline 2965ecb_cold
2966void
1670loop_destroy (EV_P) 2967ev_loop_destroy (EV_P)
1671{ 2968{
1672 int i; 2969 int i;
2970
2971#if EV_MULTIPLICITY
2972 /* mimic free (0) */
2973 if (!EV_A)
2974 return;
2975#endif
2976
2977#if EV_CLEANUP_ENABLE
2978 /* queue cleanup watchers (and execute them) */
2979 if (expect_false (cleanupcnt))
2980 {
2981 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2982 EV_INVOKE_PENDING;
2983 }
2984#endif
2985
2986#if EV_CHILD_ENABLE
2987 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2988 {
2989 ev_ref (EV_A); /* child watcher */
2990 ev_signal_stop (EV_A_ &childev);
2991 }
2992#endif
1673 2993
1674 if (ev_is_active (&pipe_w)) 2994 if (ev_is_active (&pipe_w))
1675 { 2995 {
1676 /*ev_ref (EV_A);*/ 2996 /*ev_ref (EV_A);*/
1677 /*ev_io_stop (EV_A_ &pipe_w);*/ 2997 /*ev_io_stop (EV_A_ &pipe_w);*/
1678 2998
1679#if EV_USE_EVENTFD
1680 if (evfd >= 0)
1681 close (evfd);
1682#endif
1683
1684 if (evpipe [0] >= 0)
1685 {
1686 EV_WIN32_CLOSE_FD (evpipe [0]); 2999 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1687 EV_WIN32_CLOSE_FD (evpipe [1]); 3000 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1688 }
1689 } 3001 }
1690 3002
1691#if EV_USE_SIGNALFD 3003#if EV_USE_SIGNALFD
1692 if (ev_is_active (&sigfd_w)) 3004 if (ev_is_active (&sigfd_w))
1693 close (sigfd); 3005 close (sigfd);
… …
1699#endif 3011#endif
1700 3012
1701 if (backend_fd >= 0) 3013 if (backend_fd >= 0)
1702 close (backend_fd); 3014 close (backend_fd);
1703 3015
3016#if EV_USE_IOCP
3017 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
3018#endif
1704#if EV_USE_PORT 3019#if EV_USE_PORT
1705 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3020 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1706#endif 3021#endif
1707#if EV_USE_KQUEUE 3022#if EV_USE_KQUEUE
1708 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3023 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
3024#endif
3025#if EV_USE_LINUXAIO
3026 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
1709#endif 3027#endif
1710#if EV_USE_EPOLL 3028#if EV_USE_EPOLL
1711 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3029 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
1712#endif 3030#endif
1713#if EV_USE_POLL 3031#if EV_USE_POLL
1714 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3032 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
1715#endif 3033#endif
1716#if EV_USE_SELECT 3034#if EV_USE_SELECT
1717 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3035 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
1718#endif 3036#endif
1719 3037
1720 for (i = NUMPRI; i--; ) 3038 for (i = NUMPRI; i--; )
1721 { 3039 {
1722 array_free (pending, [i]); 3040 array_free (pending, [i]);
… …
1735 array_free (periodic, EMPTY); 3053 array_free (periodic, EMPTY);
1736#endif 3054#endif
1737#if EV_FORK_ENABLE 3055#if EV_FORK_ENABLE
1738 array_free (fork, EMPTY); 3056 array_free (fork, EMPTY);
1739#endif 3057#endif
3058#if EV_CLEANUP_ENABLE
3059 array_free (cleanup, EMPTY);
3060#endif
1740 array_free (prepare, EMPTY); 3061 array_free (prepare, EMPTY);
1741 array_free (check, EMPTY); 3062 array_free (check, EMPTY);
1742#if EV_ASYNC_ENABLE 3063#if EV_ASYNC_ENABLE
1743 array_free (async, EMPTY); 3064 array_free (async, EMPTY);
1744#endif 3065#endif
1745 3066
1746 backend = 0; 3067 backend = 0;
3068
3069#if EV_MULTIPLICITY
3070 if (ev_is_default_loop (EV_A))
3071#endif
3072 ev_default_loop_ptr = 0;
3073#if EV_MULTIPLICITY
3074 else
3075 ev_free (EV_A);
3076#endif
1747} 3077}
1748 3078
1749#if EV_USE_INOTIFY 3079#if EV_USE_INOTIFY
1750inline_size void infy_fork (EV_P); 3080inline_size void infy_fork (EV_P);
1751#endif 3081#endif
1752 3082
1753inline_size void 3083inline_size void
1754loop_fork (EV_P) 3084loop_fork (EV_P)
1755{ 3085{
1756#if EV_USE_PORT 3086#if EV_USE_PORT
1757 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3087 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1758#endif 3088#endif
1759#if EV_USE_KQUEUE 3089#if EV_USE_KQUEUE
1760 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 3090 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
3091#endif
3092#if EV_USE_LINUXAIO
3093 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
1761#endif 3094#endif
1762#if EV_USE_EPOLL 3095#if EV_USE_EPOLL
1763 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3096 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
1764#endif 3097#endif
1765#if EV_USE_INOTIFY 3098#if EV_USE_INOTIFY
1766 infy_fork (EV_A); 3099 infy_fork (EV_A);
1767#endif 3100#endif
1768 3101
3102#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1769 if (ev_is_active (&pipe_w)) 3103 if (ev_is_active (&pipe_w) && postfork != 2)
1770 { 3104 {
1771 /* this "locks" the handlers against writing to the pipe */ 3105 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1772 /* while we modify the fd vars */
1773 sig_pending = 1;
1774#if EV_ASYNC_ENABLE
1775 async_pending = 1;
1776#endif
1777 3106
1778 ev_ref (EV_A); 3107 ev_ref (EV_A);
1779 ev_io_stop (EV_A_ &pipe_w); 3108 ev_io_stop (EV_A_ &pipe_w);
1780 3109
1781#if EV_USE_EVENTFD
1782 if (evfd >= 0)
1783 close (evfd);
1784#endif
1785
1786 if (evpipe [0] >= 0) 3110 if (evpipe [0] >= 0)
1787 {
1788 EV_WIN32_CLOSE_FD (evpipe [0]); 3111 EV_WIN32_CLOSE_FD (evpipe [0]);
1789 EV_WIN32_CLOSE_FD (evpipe [1]);
1790 }
1791 3112
1792 evpipe_init (EV_A); 3113 evpipe_init (EV_A);
1793 /* now iterate over everything, in case we missed something */ 3114 /* iterate over everything, in case we missed something before */
1794 pipecb (EV_A_ &pipe_w, EV_READ); 3115 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1795 } 3116 }
3117#endif
1796 3118
1797 postfork = 0; 3119 postfork = 0;
1798} 3120}
1799 3121
1800#if EV_MULTIPLICITY 3122#if EV_MULTIPLICITY
1801 3123
3124ecb_cold
1802struct ev_loop * 3125struct ev_loop *
1803ev_loop_new (unsigned int flags) 3126ev_loop_new (unsigned int flags) EV_NOEXCEPT
1804{ 3127{
1805 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3128 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1806 3129
1807 memset (EV_A, 0, sizeof (struct ev_loop)); 3130 memset (EV_A, 0, sizeof (struct ev_loop));
1808 loop_init (EV_A_ flags); 3131 loop_init (EV_A_ flags);
1809 3132
1810 if (ev_backend (EV_A)) 3133 if (ev_backend (EV_A))
1811 return EV_A; 3134 return EV_A;
1812 3135
3136 ev_free (EV_A);
1813 return 0; 3137 return 0;
1814} 3138}
1815 3139
1816void
1817ev_loop_destroy (EV_P)
1818{
1819 loop_destroy (EV_A);
1820 ev_free (loop);
1821}
1822
1823void
1824ev_loop_fork (EV_P)
1825{
1826 postfork = 1; /* must be in line with ev_default_fork */
1827}
1828#endif /* multiplicity */ 3140#endif /* multiplicity */
1829 3141
1830#if EV_VERIFY 3142#if EV_VERIFY
1831static void noinline 3143noinline ecb_cold
3144static void
1832verify_watcher (EV_P_ W w) 3145verify_watcher (EV_P_ W w)
1833{ 3146{
1834 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3147 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1835 3148
1836 if (w->pending) 3149 if (w->pending)
1837 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3150 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1838} 3151}
1839 3152
1840static void noinline 3153noinline ecb_cold
3154static void
1841verify_heap (EV_P_ ANHE *heap, int N) 3155verify_heap (EV_P_ ANHE *heap, int N)
1842{ 3156{
1843 int i; 3157 int i;
1844 3158
1845 for (i = HEAP0; i < N + HEAP0; ++i) 3159 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1850 3164
1851 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3165 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1852 } 3166 }
1853} 3167}
1854 3168
1855static void noinline 3169noinline ecb_cold
3170static void
1856array_verify (EV_P_ W *ws, int cnt) 3171array_verify (EV_P_ W *ws, int cnt)
1857{ 3172{
1858 while (cnt--) 3173 while (cnt--)
1859 { 3174 {
1860 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3175 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1861 verify_watcher (EV_A_ ws [cnt]); 3176 verify_watcher (EV_A_ ws [cnt]);
1862 } 3177 }
1863} 3178}
1864#endif 3179#endif
1865 3180
1866#if EV_MINIMAL < 2 3181#if EV_FEATURE_API
1867void 3182void ecb_cold
1868ev_loop_verify (EV_P) 3183ev_verify (EV_P) EV_NOEXCEPT
1869{ 3184{
1870#if EV_VERIFY 3185#if EV_VERIFY
1871 int i; 3186 int i;
1872 WL w; 3187 WL w, w2;
1873 3188
1874 assert (activecnt >= -1); 3189 assert (activecnt >= -1);
1875 3190
1876 assert (fdchangemax >= fdchangecnt); 3191 assert (fdchangemax >= fdchangecnt);
1877 for (i = 0; i < fdchangecnt; ++i) 3192 for (i = 0; i < fdchangecnt; ++i)
1878 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3193 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1879 3194
1880 assert (anfdmax >= 0); 3195 assert (anfdmax >= 0);
1881 for (i = 0; i < anfdmax; ++i) 3196 for (i = 0; i < anfdmax; ++i)
3197 {
3198 int j = 0;
3199
1882 for (w = anfds [i].head; w; w = w->next) 3200 for (w = w2 = anfds [i].head; w; w = w->next)
1883 { 3201 {
1884 verify_watcher (EV_A_ (W)w); 3202 verify_watcher (EV_A_ (W)w);
3203
3204 if (j++ & 1)
3205 {
3206 assert (("libev: io watcher list contains a loop", w != w2));
3207 w2 = w2->next;
3208 }
3209
1885 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3210 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1886 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 3211 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1887 } 3212 }
3213 }
1888 3214
1889 assert (timermax >= timercnt); 3215 assert (timermax >= timercnt);
1890 verify_heap (EV_A_ timers, timercnt); 3216 verify_heap (EV_A_ timers, timercnt);
1891 3217
1892#if EV_PERIODIC_ENABLE 3218#if EV_PERIODIC_ENABLE
… …
1907#if EV_FORK_ENABLE 3233#if EV_FORK_ENABLE
1908 assert (forkmax >= forkcnt); 3234 assert (forkmax >= forkcnt);
1909 array_verify (EV_A_ (W *)forks, forkcnt); 3235 array_verify (EV_A_ (W *)forks, forkcnt);
1910#endif 3236#endif
1911 3237
3238#if EV_CLEANUP_ENABLE
3239 assert (cleanupmax >= cleanupcnt);
3240 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
3241#endif
3242
1912#if EV_ASYNC_ENABLE 3243#if EV_ASYNC_ENABLE
1913 assert (asyncmax >= asynccnt); 3244 assert (asyncmax >= asynccnt);
1914 array_verify (EV_A_ (W *)asyncs, asynccnt); 3245 array_verify (EV_A_ (W *)asyncs, asynccnt);
1915#endif 3246#endif
1916 3247
3248#if EV_PREPARE_ENABLE
1917 assert (preparemax >= preparecnt); 3249 assert (preparemax >= preparecnt);
1918 array_verify (EV_A_ (W *)prepares, preparecnt); 3250 array_verify (EV_A_ (W *)prepares, preparecnt);
3251#endif
1919 3252
3253#if EV_CHECK_ENABLE
1920 assert (checkmax >= checkcnt); 3254 assert (checkmax >= checkcnt);
1921 array_verify (EV_A_ (W *)checks, checkcnt); 3255 array_verify (EV_A_ (W *)checks, checkcnt);
3256#endif
1922 3257
1923# if 0 3258# if 0
3259#if EV_CHILD_ENABLE
1924 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 3260 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1925 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending) 3261 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
3262#endif
1926# endif 3263# endif
1927#endif 3264#endif
1928} 3265}
1929#endif 3266#endif
1930 3267
1931#if EV_MULTIPLICITY 3268#if EV_MULTIPLICITY
3269ecb_cold
1932struct ev_loop * 3270struct ev_loop *
1933ev_default_loop_init (unsigned int flags)
1934#else 3271#else
1935int 3272int
3273#endif
1936ev_default_loop (unsigned int flags) 3274ev_default_loop (unsigned int flags) EV_NOEXCEPT
1937#endif
1938{ 3275{
1939 if (!ev_default_loop_ptr) 3276 if (!ev_default_loop_ptr)
1940 { 3277 {
1941#if EV_MULTIPLICITY 3278#if EV_MULTIPLICITY
1942 EV_P = ev_default_loop_ptr = &default_loop_struct; 3279 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1946 3283
1947 loop_init (EV_A_ flags); 3284 loop_init (EV_A_ flags);
1948 3285
1949 if (ev_backend (EV_A)) 3286 if (ev_backend (EV_A))
1950 { 3287 {
1951#ifndef _WIN32 3288#if EV_CHILD_ENABLE
1952 ev_signal_init (&childev, childcb, SIGCHLD); 3289 ev_signal_init (&childev, childcb, SIGCHLD);
1953 ev_set_priority (&childev, EV_MAXPRI); 3290 ev_set_priority (&childev, EV_MAXPRI);
1954 ev_signal_start (EV_A_ &childev); 3291 ev_signal_start (EV_A_ &childev);
1955 ev_unref (EV_A); /* child watcher should not keep loop alive */ 3292 ev_unref (EV_A); /* child watcher should not keep loop alive */
1956#endif 3293#endif
… …
1961 3298
1962 return ev_default_loop_ptr; 3299 return ev_default_loop_ptr;
1963} 3300}
1964 3301
1965void 3302void
1966ev_default_destroy (void) 3303ev_loop_fork (EV_P) EV_NOEXCEPT
1967{ 3304{
1968#if EV_MULTIPLICITY 3305 postfork = 1;
1969 EV_P = ev_default_loop_ptr;
1970#endif
1971
1972 ev_default_loop_ptr = 0;
1973
1974#ifndef _WIN32
1975 ev_ref (EV_A); /* child watcher */
1976 ev_signal_stop (EV_A_ &childev);
1977#endif
1978
1979 loop_destroy (EV_A);
1980}
1981
1982void
1983ev_default_fork (void)
1984{
1985#if EV_MULTIPLICITY
1986 EV_P = ev_default_loop_ptr;
1987#endif
1988
1989 postfork = 1; /* must be in line with ev_loop_fork */
1990} 3306}
1991 3307
1992/*****************************************************************************/ 3308/*****************************************************************************/
1993 3309
1994void 3310void
… …
1996{ 3312{
1997 EV_CB_INVOKE ((W)w, revents); 3313 EV_CB_INVOKE ((W)w, revents);
1998} 3314}
1999 3315
2000unsigned int 3316unsigned int
2001ev_pending_count (EV_P) 3317ev_pending_count (EV_P) EV_NOEXCEPT
2002{ 3318{
2003 int pri; 3319 int pri;
2004 unsigned int count = 0; 3320 unsigned int count = 0;
2005 3321
2006 for (pri = NUMPRI; pri--; ) 3322 for (pri = NUMPRI; pri--; )
2007 count += pendingcnt [pri]; 3323 count += pendingcnt [pri];
2008 3324
2009 return count; 3325 return count;
2010} 3326}
2011 3327
2012void noinline 3328noinline
3329void
2013ev_invoke_pending (EV_P) 3330ev_invoke_pending (EV_P)
2014{ 3331{
2015 int pri; 3332 pendingpri = NUMPRI;
2016 3333
2017 for (pri = NUMPRI; pri--; ) 3334 do
3335 {
3336 --pendingpri;
3337
3338 /* pendingpri possibly gets modified in the inner loop */
2018 while (pendingcnt [pri]) 3339 while (pendingcnt [pendingpri])
2019 { 3340 {
2020 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3341 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2021 3342
2022 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2023 /* ^ this is no longer true, as pending_w could be here */
2024
2025 p->w->pending = 0; 3343 p->w->pending = 0;
2026 EV_CB_INVOKE (p->w, p->events); 3344 EV_CB_INVOKE (p->w, p->events);
2027 EV_FREQUENT_CHECK; 3345 EV_FREQUENT_CHECK;
2028 } 3346 }
3347 }
3348 while (pendingpri);
2029} 3349}
2030 3350
2031#if EV_IDLE_ENABLE 3351#if EV_IDLE_ENABLE
2032/* make idle watchers pending. this handles the "call-idle */ 3352/* make idle watchers pending. this handles the "call-idle */
2033/* only when higher priorities are idle" logic */ 3353/* only when higher priorities are idle" logic */
… …
2085 EV_FREQUENT_CHECK; 3405 EV_FREQUENT_CHECK;
2086 feed_reverse (EV_A_ (W)w); 3406 feed_reverse (EV_A_ (W)w);
2087 } 3407 }
2088 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 3408 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
2089 3409
2090 feed_reverse_done (EV_A_ EV_TIMEOUT); 3410 feed_reverse_done (EV_A_ EV_TIMER);
2091 } 3411 }
2092} 3412}
2093 3413
2094#if EV_PERIODIC_ENABLE 3414#if EV_PERIODIC_ENABLE
3415
3416noinline
3417static void
3418periodic_recalc (EV_P_ ev_periodic *w)
3419{
3420 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3421 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3422
3423 /* the above almost always errs on the low side */
3424 while (at <= ev_rt_now)
3425 {
3426 ev_tstamp nat = at + w->interval;
3427
3428 /* when resolution fails us, we use ev_rt_now */
3429 if (expect_false (nat == at))
3430 {
3431 at = ev_rt_now;
3432 break;
3433 }
3434
3435 at = nat;
3436 }
3437
3438 ev_at (w) = at;
3439}
3440
2095/* make periodics pending */ 3441/* make periodics pending */
2096inline_size void 3442inline_size void
2097periodics_reify (EV_P) 3443periodics_reify (EV_P)
2098{ 3444{
2099 EV_FREQUENT_CHECK; 3445 EV_FREQUENT_CHECK;
2100 3446
2101 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3447 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2102 { 3448 {
2103 int feed_count = 0;
2104
2105 do 3449 do
2106 { 3450 {
2107 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3451 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2108 3452
2109 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3453 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2118 ANHE_at_cache (periodics [HEAP0]); 3462 ANHE_at_cache (periodics [HEAP0]);
2119 downheap (periodics, periodiccnt, HEAP0); 3463 downheap (periodics, periodiccnt, HEAP0);
2120 } 3464 }
2121 else if (w->interval) 3465 else if (w->interval)
2122 { 3466 {
2123 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3467 periodic_recalc (EV_A_ w);
2124 /* if next trigger time is not sufficiently in the future, put it there */
2125 /* this might happen because of floating point inexactness */
2126 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2127 {
2128 ev_at (w) += w->interval;
2129
2130 /* if interval is unreasonably low we might still have a time in the past */
2131 /* so correct this. this will make the periodic very inexact, but the user */
2132 /* has effectively asked to get triggered more often than possible */
2133 if (ev_at (w) < ev_rt_now)
2134 ev_at (w) = ev_rt_now;
2135 }
2136
2137 ANHE_at_cache (periodics [HEAP0]); 3468 ANHE_at_cache (periodics [HEAP0]);
2138 downheap (periodics, periodiccnt, HEAP0); 3469 downheap (periodics, periodiccnt, HEAP0);
2139 } 3470 }
2140 else 3471 else
2141 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3472 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2148 feed_reverse_done (EV_A_ EV_PERIODIC); 3479 feed_reverse_done (EV_A_ EV_PERIODIC);
2149 } 3480 }
2150} 3481}
2151 3482
2152/* simply recalculate all periodics */ 3483/* simply recalculate all periodics */
2153/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 3484/* TODO: maybe ensure that at least one event happens when jumping forward? */
2154static void noinline 3485noinline ecb_cold
3486static void
2155periodics_reschedule (EV_P) 3487periodics_reschedule (EV_P)
2156{ 3488{
2157 int i; 3489 int i;
2158 3490
2159 /* adjust periodics after time jump */ 3491 /* adjust periodics after time jump */
… …
2162 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3494 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2163 3495
2164 if (w->reschedule_cb) 3496 if (w->reschedule_cb)
2165 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3497 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2166 else if (w->interval) 3498 else if (w->interval)
2167 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3499 periodic_recalc (EV_A_ w);
2168 3500
2169 ANHE_at_cache (periodics [i]); 3501 ANHE_at_cache (periodics [i]);
2170 } 3502 }
2171 3503
2172 reheap (periodics, periodiccnt); 3504 reheap (periodics, periodiccnt);
2173} 3505}
2174#endif 3506#endif
2175 3507
2176/* adjust all timers by a given offset */ 3508/* adjust all timers by a given offset */
2177static void noinline 3509noinline ecb_cold
3510static void
2178timers_reschedule (EV_P_ ev_tstamp adjust) 3511timers_reschedule (EV_P_ ev_tstamp adjust)
2179{ 3512{
2180 int i; 3513 int i;
2181 3514
2182 for (i = 0; i < timercnt; ++i) 3515 for (i = 0; i < timercnt; ++i)
… …
2219 * doesn't hurt either as we only do this on time-jumps or 3552 * doesn't hurt either as we only do this on time-jumps or
2220 * in the unlikely event of having been preempted here. 3553 * in the unlikely event of having been preempted here.
2221 */ 3554 */
2222 for (i = 4; --i; ) 3555 for (i = 4; --i; )
2223 { 3556 {
3557 ev_tstamp diff;
2224 rtmn_diff = ev_rt_now - mn_now; 3558 rtmn_diff = ev_rt_now - mn_now;
2225 3559
3560 diff = odiff - rtmn_diff;
3561
2226 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3562 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2227 return; /* all is well */ 3563 return; /* all is well */
2228 3564
2229 ev_rt_now = ev_time (); 3565 ev_rt_now = ev_time ();
2230 mn_now = get_clock (); 3566 mn_now = get_clock ();
2231 now_floor = mn_now; 3567 now_floor = mn_now;
… …
2253 3589
2254 mn_now = ev_rt_now; 3590 mn_now = ev_rt_now;
2255 } 3591 }
2256} 3592}
2257 3593
2258void 3594int
2259ev_loop (EV_P_ int flags) 3595ev_run (EV_P_ int flags)
2260{ 3596{
2261#if EV_MINIMAL < 2 3597#if EV_FEATURE_API
2262 ++loop_depth; 3598 ++loop_depth;
2263#endif 3599#endif
2264 3600
2265 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 3601 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2266 3602
2267 loop_done = EVUNLOOP_CANCEL; 3603 loop_done = EVBREAK_CANCEL;
2268 3604
2269 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 3605 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2270 3606
2271 do 3607 do
2272 { 3608 {
2273#if EV_VERIFY >= 2 3609#if EV_VERIFY >= 2
2274 ev_loop_verify (EV_A); 3610 ev_verify (EV_A);
2275#endif 3611#endif
2276 3612
2277#ifndef _WIN32 3613#ifndef _WIN32
2278 if (expect_false (curpid)) /* penalise the forking check even more */ 3614 if (expect_false (curpid)) /* penalise the forking check even more */
2279 if (expect_false (getpid () != curpid)) 3615 if (expect_false (getpid () != curpid))
… …
2291 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3627 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2292 EV_INVOKE_PENDING; 3628 EV_INVOKE_PENDING;
2293 } 3629 }
2294#endif 3630#endif
2295 3631
3632#if EV_PREPARE_ENABLE
2296 /* queue prepare watchers (and execute them) */ 3633 /* queue prepare watchers (and execute them) */
2297 if (expect_false (preparecnt)) 3634 if (expect_false (preparecnt))
2298 { 3635 {
2299 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3636 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2300 EV_INVOKE_PENDING; 3637 EV_INVOKE_PENDING;
2301 } 3638 }
3639#endif
2302 3640
2303 if (expect_false (loop_done)) 3641 if (expect_false (loop_done))
2304 break; 3642 break;
2305 3643
2306 /* we might have forked, so reify kernel state if necessary */ 3644 /* we might have forked, so reify kernel state if necessary */
… …
2313 /* calculate blocking time */ 3651 /* calculate blocking time */
2314 { 3652 {
2315 ev_tstamp waittime = 0.; 3653 ev_tstamp waittime = 0.;
2316 ev_tstamp sleeptime = 0.; 3654 ev_tstamp sleeptime = 0.;
2317 3655
3656 /* remember old timestamp for io_blocktime calculation */
3657 ev_tstamp prev_mn_now = mn_now;
3658
3659 /* update time to cancel out callback processing overhead */
3660 time_update (EV_A_ 1e100);
3661
3662 /* from now on, we want a pipe-wake-up */
3663 pipe_write_wanted = 1;
3664
3665 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3666
2318 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3667 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2319 { 3668 {
2320 /* remember old timestamp for io_blocktime calculation */
2321 ev_tstamp prev_mn_now = mn_now;
2322
2323 /* update time to cancel out callback processing overhead */
2324 time_update (EV_A_ 1e100);
2325
2326 waittime = MAX_BLOCKTIME; 3669 waittime = MAX_BLOCKTIME;
2327 3670
2328 if (timercnt) 3671 if (timercnt)
2329 { 3672 {
2330 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3673 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2331 if (waittime > to) waittime = to; 3674 if (waittime > to) waittime = to;
2332 } 3675 }
2333 3676
2334#if EV_PERIODIC_ENABLE 3677#if EV_PERIODIC_ENABLE
2335 if (periodiccnt) 3678 if (periodiccnt)
2336 { 3679 {
2337 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3680 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2338 if (waittime > to) waittime = to; 3681 if (waittime > to) waittime = to;
2339 } 3682 }
2340#endif 3683#endif
2341 3684
2342 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3685 /* don't let timeouts decrease the waittime below timeout_blocktime */
2343 if (expect_false (waittime < timeout_blocktime)) 3686 if (expect_false (waittime < timeout_blocktime))
2344 waittime = timeout_blocktime; 3687 waittime = timeout_blocktime;
3688
3689 /* at this point, we NEED to wait, so we have to ensure */
3690 /* to pass a minimum nonzero value to the backend */
3691 if (expect_false (waittime < backend_mintime))
3692 waittime = backend_mintime;
2345 3693
2346 /* extra check because io_blocktime is commonly 0 */ 3694 /* extra check because io_blocktime is commonly 0 */
2347 if (expect_false (io_blocktime)) 3695 if (expect_false (io_blocktime))
2348 { 3696 {
2349 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3697 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2350 3698
2351 if (sleeptime > waittime - backend_fudge) 3699 if (sleeptime > waittime - backend_mintime)
2352 sleeptime = waittime - backend_fudge; 3700 sleeptime = waittime - backend_mintime;
2353 3701
2354 if (expect_true (sleeptime > 0.)) 3702 if (expect_true (sleeptime > 0.))
2355 { 3703 {
2356 ev_sleep (sleeptime); 3704 ev_sleep (sleeptime);
2357 waittime -= sleeptime; 3705 waittime -= sleeptime;
2358 } 3706 }
2359 } 3707 }
2360 } 3708 }
2361 3709
2362#if EV_MINIMAL < 2 3710#if EV_FEATURE_API
2363 ++loop_count; 3711 ++loop_count;
2364#endif 3712#endif
2365 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3713 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2366 backend_poll (EV_A_ waittime); 3714 backend_poll (EV_A_ waittime);
2367 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 3715 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3716
3717 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3718
3719 ECB_MEMORY_FENCE_ACQUIRE;
3720 if (pipe_write_skipped)
3721 {
3722 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3723 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3724 }
3725
2368 3726
2369 /* update ev_rt_now, do magic */ 3727 /* update ev_rt_now, do magic */
2370 time_update (EV_A_ waittime + sleeptime); 3728 time_update (EV_A_ waittime + sleeptime);
2371 } 3729 }
2372 3730
… …
2379#if EV_IDLE_ENABLE 3737#if EV_IDLE_ENABLE
2380 /* queue idle watchers unless other events are pending */ 3738 /* queue idle watchers unless other events are pending */
2381 idle_reify (EV_A); 3739 idle_reify (EV_A);
2382#endif 3740#endif
2383 3741
3742#if EV_CHECK_ENABLE
2384 /* queue check watchers, to be executed first */ 3743 /* queue check watchers, to be executed first */
2385 if (expect_false (checkcnt)) 3744 if (expect_false (checkcnt))
2386 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3745 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3746#endif
2387 3747
2388 EV_INVOKE_PENDING; 3748 EV_INVOKE_PENDING;
2389 } 3749 }
2390 while (expect_true ( 3750 while (expect_true (
2391 activecnt 3751 activecnt
2392 && !loop_done 3752 && !loop_done
2393 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3753 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2394 )); 3754 ));
2395 3755
2396 if (loop_done == EVUNLOOP_ONE) 3756 if (loop_done == EVBREAK_ONE)
2397 loop_done = EVUNLOOP_CANCEL; 3757 loop_done = EVBREAK_CANCEL;
2398 3758
2399#if EV_MINIMAL < 2 3759#if EV_FEATURE_API
2400 --loop_depth; 3760 --loop_depth;
2401#endif 3761#endif
2402}
2403 3762
3763 return activecnt;
3764}
3765
2404void 3766void
2405ev_unloop (EV_P_ int how) 3767ev_break (EV_P_ int how) EV_NOEXCEPT
2406{ 3768{
2407 loop_done = how; 3769 loop_done = how;
2408} 3770}
2409 3771
2410void 3772void
2411ev_ref (EV_P) 3773ev_ref (EV_P) EV_NOEXCEPT
2412{ 3774{
2413 ++activecnt; 3775 ++activecnt;
2414} 3776}
2415 3777
2416void 3778void
2417ev_unref (EV_P) 3779ev_unref (EV_P) EV_NOEXCEPT
2418{ 3780{
2419 --activecnt; 3781 --activecnt;
2420} 3782}
2421 3783
2422void 3784void
2423ev_now_update (EV_P) 3785ev_now_update (EV_P) EV_NOEXCEPT
2424{ 3786{
2425 time_update (EV_A_ 1e100); 3787 time_update (EV_A_ 1e100);
2426} 3788}
2427 3789
2428void 3790void
2429ev_suspend (EV_P) 3791ev_suspend (EV_P) EV_NOEXCEPT
2430{ 3792{
2431 ev_now_update (EV_A); 3793 ev_now_update (EV_A);
2432} 3794}
2433 3795
2434void 3796void
2435ev_resume (EV_P) 3797ev_resume (EV_P) EV_NOEXCEPT
2436{ 3798{
2437 ev_tstamp mn_prev = mn_now; 3799 ev_tstamp mn_prev = mn_now;
2438 3800
2439 ev_now_update (EV_A); 3801 ev_now_update (EV_A);
2440 timers_reschedule (EV_A_ mn_now - mn_prev); 3802 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2479 w->pending = 0; 3841 w->pending = 0;
2480 } 3842 }
2481} 3843}
2482 3844
2483int 3845int
2484ev_clear_pending (EV_P_ void *w) 3846ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
2485{ 3847{
2486 W w_ = (W)w; 3848 W w_ = (W)w;
2487 int pending = w_->pending; 3849 int pending = w_->pending;
2488 3850
2489 if (expect_true (pending)) 3851 if (expect_true (pending))
… …
2521 w->active = 0; 3883 w->active = 0;
2522} 3884}
2523 3885
2524/*****************************************************************************/ 3886/*****************************************************************************/
2525 3887
2526void noinline 3888noinline
3889void
2527ev_io_start (EV_P_ ev_io *w) 3890ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
2528{ 3891{
2529 int fd = w->fd; 3892 int fd = w->fd;
2530 3893
2531 if (expect_false (ev_is_active (w))) 3894 if (expect_false (ev_is_active (w)))
2532 return; 3895 return;
… …
2535 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 3898 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2536 3899
2537 EV_FREQUENT_CHECK; 3900 EV_FREQUENT_CHECK;
2538 3901
2539 ev_start (EV_A_ (W)w, 1); 3902 ev_start (EV_A_ (W)w, 1);
2540 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3903 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
2541 wlist_add (&anfds[fd].head, (WL)w); 3904 wlist_add (&anfds[fd].head, (WL)w);
3905
3906 /* common bug, apparently */
3907 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
2542 3908
2543 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3909 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2544 w->events &= ~EV__IOFDSET; 3910 w->events &= ~EV__IOFDSET;
2545 3911
2546 EV_FREQUENT_CHECK; 3912 EV_FREQUENT_CHECK;
2547} 3913}
2548 3914
2549void noinline 3915noinline
3916void
2550ev_io_stop (EV_P_ ev_io *w) 3917ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
2551{ 3918{
2552 clear_pending (EV_A_ (W)w); 3919 clear_pending (EV_A_ (W)w);
2553 if (expect_false (!ev_is_active (w))) 3920 if (expect_false (!ev_is_active (w)))
2554 return; 3921 return;
2555 3922
… …
2558 EV_FREQUENT_CHECK; 3925 EV_FREQUENT_CHECK;
2559 3926
2560 wlist_del (&anfds[w->fd].head, (WL)w); 3927 wlist_del (&anfds[w->fd].head, (WL)w);
2561 ev_stop (EV_A_ (W)w); 3928 ev_stop (EV_A_ (W)w);
2562 3929
2563 fd_change (EV_A_ w->fd, 1); 3930 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2564 3931
2565 EV_FREQUENT_CHECK; 3932 EV_FREQUENT_CHECK;
2566} 3933}
2567 3934
2568void noinline 3935noinline
3936void
2569ev_timer_start (EV_P_ ev_timer *w) 3937ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
2570{ 3938{
2571 if (expect_false (ev_is_active (w))) 3939 if (expect_false (ev_is_active (w)))
2572 return; 3940 return;
2573 3941
2574 ev_at (w) += mn_now; 3942 ev_at (w) += mn_now;
… …
2577 3945
2578 EV_FREQUENT_CHECK; 3946 EV_FREQUENT_CHECK;
2579 3947
2580 ++timercnt; 3948 ++timercnt;
2581 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 3949 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
2582 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 3950 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
2583 ANHE_w (timers [ev_active (w)]) = (WT)w; 3951 ANHE_w (timers [ev_active (w)]) = (WT)w;
2584 ANHE_at_cache (timers [ev_active (w)]); 3952 ANHE_at_cache (timers [ev_active (w)]);
2585 upheap (timers, ev_active (w)); 3953 upheap (timers, ev_active (w));
2586 3954
2587 EV_FREQUENT_CHECK; 3955 EV_FREQUENT_CHECK;
2588 3956
2589 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3957 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2590} 3958}
2591 3959
2592void noinline 3960noinline
3961void
2593ev_timer_stop (EV_P_ ev_timer *w) 3962ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
2594{ 3963{
2595 clear_pending (EV_A_ (W)w); 3964 clear_pending (EV_A_ (W)w);
2596 if (expect_false (!ev_is_active (w))) 3965 if (expect_false (!ev_is_active (w)))
2597 return; 3966 return;
2598 3967
… …
2617 ev_stop (EV_A_ (W)w); 3986 ev_stop (EV_A_ (W)w);
2618 3987
2619 EV_FREQUENT_CHECK; 3988 EV_FREQUENT_CHECK;
2620} 3989}
2621 3990
2622void noinline 3991noinline
3992void
2623ev_timer_again (EV_P_ ev_timer *w) 3993ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
2624{ 3994{
2625 EV_FREQUENT_CHECK; 3995 EV_FREQUENT_CHECK;
3996
3997 clear_pending (EV_A_ (W)w);
2626 3998
2627 if (ev_is_active (w)) 3999 if (ev_is_active (w))
2628 { 4000 {
2629 if (w->repeat) 4001 if (w->repeat)
2630 { 4002 {
… …
2643 4015
2644 EV_FREQUENT_CHECK; 4016 EV_FREQUENT_CHECK;
2645} 4017}
2646 4018
2647ev_tstamp 4019ev_tstamp
2648ev_timer_remaining (EV_P_ ev_timer *w) 4020ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
2649{ 4021{
2650 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4022 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2651} 4023}
2652 4024
2653#if EV_PERIODIC_ENABLE 4025#if EV_PERIODIC_ENABLE
2654void noinline 4026noinline
4027void
2655ev_periodic_start (EV_P_ ev_periodic *w) 4028ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
2656{ 4029{
2657 if (expect_false (ev_is_active (w))) 4030 if (expect_false (ev_is_active (w)))
2658 return; 4031 return;
2659 4032
2660 if (w->reschedule_cb) 4033 if (w->reschedule_cb)
2661 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4034 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2662 else if (w->interval) 4035 else if (w->interval)
2663 { 4036 {
2664 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 4037 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2665 /* this formula differs from the one in periodic_reify because we do not always round up */ 4038 periodic_recalc (EV_A_ w);
2666 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2667 } 4039 }
2668 else 4040 else
2669 ev_at (w) = w->offset; 4041 ev_at (w) = w->offset;
2670 4042
2671 EV_FREQUENT_CHECK; 4043 EV_FREQUENT_CHECK;
2672 4044
2673 ++periodiccnt; 4045 ++periodiccnt;
2674 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4046 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2675 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4047 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
2676 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4048 ANHE_w (periodics [ev_active (w)]) = (WT)w;
2677 ANHE_at_cache (periodics [ev_active (w)]); 4049 ANHE_at_cache (periodics [ev_active (w)]);
2678 upheap (periodics, ev_active (w)); 4050 upheap (periodics, ev_active (w));
2679 4051
2680 EV_FREQUENT_CHECK; 4052 EV_FREQUENT_CHECK;
2681 4053
2682 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4054 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2683} 4055}
2684 4056
2685void noinline 4057noinline
4058void
2686ev_periodic_stop (EV_P_ ev_periodic *w) 4059ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
2687{ 4060{
2688 clear_pending (EV_A_ (W)w); 4061 clear_pending (EV_A_ (W)w);
2689 if (expect_false (!ev_is_active (w))) 4062 if (expect_false (!ev_is_active (w)))
2690 return; 4063 return;
2691 4064
… …
2708 ev_stop (EV_A_ (W)w); 4081 ev_stop (EV_A_ (W)w);
2709 4082
2710 EV_FREQUENT_CHECK; 4083 EV_FREQUENT_CHECK;
2711} 4084}
2712 4085
2713void noinline 4086noinline
4087void
2714ev_periodic_again (EV_P_ ev_periodic *w) 4088ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
2715{ 4089{
2716 /* TODO: use adjustheap and recalculation */ 4090 /* TODO: use adjustheap and recalculation */
2717 ev_periodic_stop (EV_A_ w); 4091 ev_periodic_stop (EV_A_ w);
2718 ev_periodic_start (EV_A_ w); 4092 ev_periodic_start (EV_A_ w);
2719} 4093}
… …
2721 4095
2722#ifndef SA_RESTART 4096#ifndef SA_RESTART
2723# define SA_RESTART 0 4097# define SA_RESTART 0
2724#endif 4098#endif
2725 4099
4100#if EV_SIGNAL_ENABLE
4101
2726void noinline 4102noinline
4103void
2727ev_signal_start (EV_P_ ev_signal *w) 4104ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
2728{ 4105{
2729 if (expect_false (ev_is_active (w))) 4106 if (expect_false (ev_is_active (w)))
2730 return; 4107 return;
2731 4108
2732 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4109 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
… …
2734#if EV_MULTIPLICITY 4111#if EV_MULTIPLICITY
2735 assert (("libev: a signal must not be attached to two different loops", 4112 assert (("libev: a signal must not be attached to two different loops",
2736 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4113 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2737 4114
2738 signals [w->signum - 1].loop = EV_A; 4115 signals [w->signum - 1].loop = EV_A;
4116 ECB_MEMORY_FENCE_RELEASE;
2739#endif 4117#endif
2740 4118
2741 EV_FREQUENT_CHECK; 4119 EV_FREQUENT_CHECK;
2742 4120
2743#if EV_USE_SIGNALFD 4121#if EV_USE_SIGNALFD
… …
2790 sa.sa_handler = ev_sighandler; 4168 sa.sa_handler = ev_sighandler;
2791 sigfillset (&sa.sa_mask); 4169 sigfillset (&sa.sa_mask);
2792 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 4170 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2793 sigaction (w->signum, &sa, 0); 4171 sigaction (w->signum, &sa, 0);
2794 4172
4173 if (origflags & EVFLAG_NOSIGMASK)
4174 {
2795 sigemptyset (&sa.sa_mask); 4175 sigemptyset (&sa.sa_mask);
2796 sigaddset (&sa.sa_mask, w->signum); 4176 sigaddset (&sa.sa_mask, w->signum);
2797 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 4177 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
4178 }
2798#endif 4179#endif
2799 } 4180 }
2800 4181
2801 EV_FREQUENT_CHECK; 4182 EV_FREQUENT_CHECK;
2802} 4183}
2803 4184
2804void noinline 4185noinline
4186void
2805ev_signal_stop (EV_P_ ev_signal *w) 4187ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
2806{ 4188{
2807 clear_pending (EV_A_ (W)w); 4189 clear_pending (EV_A_ (W)w);
2808 if (expect_false (!ev_is_active (w))) 4190 if (expect_false (!ev_is_active (w)))
2809 return; 4191 return;
2810 4192
… …
2836 } 4218 }
2837 4219
2838 EV_FREQUENT_CHECK; 4220 EV_FREQUENT_CHECK;
2839} 4221}
2840 4222
4223#endif
4224
4225#if EV_CHILD_ENABLE
4226
2841void 4227void
2842ev_child_start (EV_P_ ev_child *w) 4228ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
2843{ 4229{
2844#if EV_MULTIPLICITY 4230#if EV_MULTIPLICITY
2845 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4231 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2846#endif 4232#endif
2847 if (expect_false (ev_is_active (w))) 4233 if (expect_false (ev_is_active (w)))
2848 return; 4234 return;
2849 4235
2850 EV_FREQUENT_CHECK; 4236 EV_FREQUENT_CHECK;
2851 4237
2852 ev_start (EV_A_ (W)w, 1); 4238 ev_start (EV_A_ (W)w, 1);
2853 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4239 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2854 4240
2855 EV_FREQUENT_CHECK; 4241 EV_FREQUENT_CHECK;
2856} 4242}
2857 4243
2858void 4244void
2859ev_child_stop (EV_P_ ev_child *w) 4245ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
2860{ 4246{
2861 clear_pending (EV_A_ (W)w); 4247 clear_pending (EV_A_ (W)w);
2862 if (expect_false (!ev_is_active (w))) 4248 if (expect_false (!ev_is_active (w)))
2863 return; 4249 return;
2864 4250
2865 EV_FREQUENT_CHECK; 4251 EV_FREQUENT_CHECK;
2866 4252
2867 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4253 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2868 ev_stop (EV_A_ (W)w); 4254 ev_stop (EV_A_ (W)w);
2869 4255
2870 EV_FREQUENT_CHECK; 4256 EV_FREQUENT_CHECK;
2871} 4257}
4258
4259#endif
2872 4260
2873#if EV_STAT_ENABLE 4261#if EV_STAT_ENABLE
2874 4262
2875# ifdef _WIN32 4263# ifdef _WIN32
2876# undef lstat 4264# undef lstat
… …
2879 4267
2880#define DEF_STAT_INTERVAL 5.0074891 4268#define DEF_STAT_INTERVAL 5.0074891
2881#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4269#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2882#define MIN_STAT_INTERVAL 0.1074891 4270#define MIN_STAT_INTERVAL 0.1074891
2883 4271
2884static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4272noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2885 4273
2886#if EV_USE_INOTIFY 4274#if EV_USE_INOTIFY
2887 4275
2888/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ 4276/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
2889# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4277# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2890 4278
2891static void noinline 4279noinline
4280static void
2892infy_add (EV_P_ ev_stat *w) 4281infy_add (EV_P_ ev_stat *w)
2893{ 4282{
2894 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); 4283 w->wd = inotify_add_watch (fs_fd, w->path,
4284 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4285 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4286 | IN_DONT_FOLLOW | IN_MASK_ADD);
2895 4287
2896 if (w->wd >= 0) 4288 if (w->wd >= 0)
2897 { 4289 {
2898 struct statfs sfs; 4290 struct statfs sfs;
2899 4291
… …
2903 4295
2904 if (!fs_2625) 4296 if (!fs_2625)
2905 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4297 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2906 else if (!statfs (w->path, &sfs) 4298 else if (!statfs (w->path, &sfs)
2907 && (sfs.f_type == 0x1373 /* devfs */ 4299 && (sfs.f_type == 0x1373 /* devfs */
4300 || sfs.f_type == 0x4006 /* fat */
4301 || sfs.f_type == 0x4d44 /* msdos */
2908 || sfs.f_type == 0xEF53 /* ext2/3 */ 4302 || sfs.f_type == 0xEF53 /* ext2/3 */
4303 || sfs.f_type == 0x72b6 /* jffs2 */
4304 || sfs.f_type == 0x858458f6 /* ramfs */
4305 || sfs.f_type == 0x5346544e /* ntfs */
2909 || sfs.f_type == 0x3153464a /* jfs */ 4306 || sfs.f_type == 0x3153464a /* jfs */
4307 || sfs.f_type == 0x9123683e /* btrfs */
2910 || sfs.f_type == 0x52654973 /* reiser3 */ 4308 || sfs.f_type == 0x52654973 /* reiser3 */
2911 || sfs.f_type == 0x01021994 /* tempfs */ 4309 || sfs.f_type == 0x01021994 /* tmpfs */
2912 || sfs.f_type == 0x58465342 /* xfs */)) 4310 || sfs.f_type == 0x58465342 /* xfs */))
2913 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4311 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
2914 else 4312 else
2915 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4313 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2916 } 4314 }
… …
2937 if (!pend || pend == path) 4335 if (!pend || pend == path)
2938 break; 4336 break;
2939 4337
2940 *pend = 0; 4338 *pend = 0;
2941 w->wd = inotify_add_watch (fs_fd, path, mask); 4339 w->wd = inotify_add_watch (fs_fd, path, mask);
2942 } 4340 }
2943 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 4341 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2944 } 4342 }
2945 } 4343 }
2946 4344
2947 if (w->wd >= 0) 4345 if (w->wd >= 0)
2948 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4346 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2949 4347
2950 /* now re-arm timer, if required */ 4348 /* now re-arm timer, if required */
2951 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4349 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2952 ev_timer_again (EV_A_ &w->timer); 4350 ev_timer_again (EV_A_ &w->timer);
2953 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4351 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2954} 4352}
2955 4353
2956static void noinline 4354noinline
4355static void
2957infy_del (EV_P_ ev_stat *w) 4356infy_del (EV_P_ ev_stat *w)
2958{ 4357{
2959 int slot; 4358 int slot;
2960 int wd = w->wd; 4359 int wd = w->wd;
2961 4360
2962 if (wd < 0) 4361 if (wd < 0)
2963 return; 4362 return;
2964 4363
2965 w->wd = -2; 4364 w->wd = -2;
2966 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 4365 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2967 wlist_del (&fs_hash [slot].head, (WL)w); 4366 wlist_del (&fs_hash [slot].head, (WL)w);
2968 4367
2969 /* remove this watcher, if others are watching it, they will rearm */ 4368 /* remove this watcher, if others are watching it, they will rearm */
2970 inotify_rm_watch (fs_fd, wd); 4369 inotify_rm_watch (fs_fd, wd);
2971} 4370}
2972 4371
2973static void noinline 4372noinline
4373static void
2974infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4374infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2975{ 4375{
2976 if (slot < 0) 4376 if (slot < 0)
2977 /* overflow, need to check for all hash slots */ 4377 /* overflow, need to check for all hash slots */
2978 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4378 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2979 infy_wd (EV_A_ slot, wd, ev); 4379 infy_wd (EV_A_ slot, wd, ev);
2980 else 4380 else
2981 { 4381 {
2982 WL w_; 4382 WL w_;
2983 4383
2984 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 4384 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2985 { 4385 {
2986 ev_stat *w = (ev_stat *)w_; 4386 ev_stat *w = (ev_stat *)w_;
2987 w_ = w_->next; /* lets us remove this watcher and all before it */ 4387 w_ = w_->next; /* lets us remove this watcher and all before it */
2988 4388
2989 if (w->wd == wd || wd == -1) 4389 if (w->wd == wd || wd == -1)
2990 { 4390 {
2991 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 4391 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2992 { 4392 {
2993 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4393 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2994 w->wd = -1; 4394 w->wd = -1;
2995 infy_add (EV_A_ w); /* re-add, no matter what */ 4395 infy_add (EV_A_ w); /* re-add, no matter what */
2996 } 4396 }
2997 4397
2998 stat_timer_cb (EV_A_ &w->timer, 0); 4398 stat_timer_cb (EV_A_ &w->timer, 0);
… …
3014 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4414 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3015 ofs += sizeof (struct inotify_event) + ev->len; 4415 ofs += sizeof (struct inotify_event) + ev->len;
3016 } 4416 }
3017} 4417}
3018 4418
3019inline_size unsigned int
3020ev_linux_version (void)
3021{
3022 struct utsname buf;
3023 unsigned int v;
3024 int i;
3025 char *p = buf.release;
3026
3027 if (uname (&buf))
3028 return 0;
3029
3030 for (i = 3+1; --i; )
3031 {
3032 unsigned int c = 0;
3033
3034 for (;;)
3035 {
3036 if (*p >= '0' && *p <= '9')
3037 c = c * 10 + *p++ - '0';
3038 else
3039 {
3040 p += *p == '.';
3041 break;
3042 }
3043 }
3044
3045 v = (v << 8) | c;
3046 }
3047
3048 return v;
3049}
3050
3051inline_size void 4419inline_size ecb_cold
4420void
3052ev_check_2625 (EV_P) 4421ev_check_2625 (EV_P)
3053{ 4422{
3054 /* kernels < 2.6.25 are borked 4423 /* kernels < 2.6.25 are borked
3055 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4424 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3056 */ 4425 */
… …
3061} 4430}
3062 4431
3063inline_size int 4432inline_size int
3064infy_newfd (void) 4433infy_newfd (void)
3065{ 4434{
3066#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4435#if defined IN_CLOEXEC && defined IN_NONBLOCK
3067 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4436 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3068 if (fd >= 0) 4437 if (fd >= 0)
3069 return fd; 4438 return fd;
3070#endif 4439#endif
3071 return inotify_init (); 4440 return inotify_init ();
… …
3112 ev_io_set (&fs_w, fs_fd, EV_READ); 4481 ev_io_set (&fs_w, fs_fd, EV_READ);
3113 ev_io_start (EV_A_ &fs_w); 4482 ev_io_start (EV_A_ &fs_w);
3114 ev_unref (EV_A); 4483 ev_unref (EV_A);
3115 } 4484 }
3116 4485
3117 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4486 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
3118 { 4487 {
3119 WL w_ = fs_hash [slot].head; 4488 WL w_ = fs_hash [slot].head;
3120 fs_hash [slot].head = 0; 4489 fs_hash [slot].head = 0;
3121 4490
3122 while (w_) 4491 while (w_)
… …
3146#else 4515#else
3147# define EV_LSTAT(p,b) lstat (p, b) 4516# define EV_LSTAT(p,b) lstat (p, b)
3148#endif 4517#endif
3149 4518
3150void 4519void
3151ev_stat_stat (EV_P_ ev_stat *w) 4520ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
3152{ 4521{
3153 if (lstat (w->path, &w->attr) < 0) 4522 if (lstat (w->path, &w->attr) < 0)
3154 w->attr.st_nlink = 0; 4523 w->attr.st_nlink = 0;
3155 else if (!w->attr.st_nlink) 4524 else if (!w->attr.st_nlink)
3156 w->attr.st_nlink = 1; 4525 w->attr.st_nlink = 1;
3157} 4526}
3158 4527
3159static void noinline 4528noinline
4529static void
3160stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4530stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3161{ 4531{
3162 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4532 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3163 4533
3164 ev_statdata prev = w->attr; 4534 ev_statdata prev = w->attr;
… …
3195 ev_feed_event (EV_A_ w, EV_STAT); 4565 ev_feed_event (EV_A_ w, EV_STAT);
3196 } 4566 }
3197} 4567}
3198 4568
3199void 4569void
3200ev_stat_start (EV_P_ ev_stat *w) 4570ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
3201{ 4571{
3202 if (expect_false (ev_is_active (w))) 4572 if (expect_false (ev_is_active (w)))
3203 return; 4573 return;
3204 4574
3205 ev_stat_stat (EV_A_ w); 4575 ev_stat_stat (EV_A_ w);
… …
3226 4596
3227 EV_FREQUENT_CHECK; 4597 EV_FREQUENT_CHECK;
3228} 4598}
3229 4599
3230void 4600void
3231ev_stat_stop (EV_P_ ev_stat *w) 4601ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
3232{ 4602{
3233 clear_pending (EV_A_ (W)w); 4603 clear_pending (EV_A_ (W)w);
3234 if (expect_false (!ev_is_active (w))) 4604 if (expect_false (!ev_is_active (w)))
3235 return; 4605 return;
3236 4606
… …
3252} 4622}
3253#endif 4623#endif
3254 4624
3255#if EV_IDLE_ENABLE 4625#if EV_IDLE_ENABLE
3256void 4626void
3257ev_idle_start (EV_P_ ev_idle *w) 4627ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
3258{ 4628{
3259 if (expect_false (ev_is_active (w))) 4629 if (expect_false (ev_is_active (w)))
3260 return; 4630 return;
3261 4631
3262 pri_adjust (EV_A_ (W)w); 4632 pri_adjust (EV_A_ (W)w);
… …
3267 int active = ++idlecnt [ABSPRI (w)]; 4637 int active = ++idlecnt [ABSPRI (w)];
3268 4638
3269 ++idleall; 4639 ++idleall;
3270 ev_start (EV_A_ (W)w, active); 4640 ev_start (EV_A_ (W)w, active);
3271 4641
3272 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 4642 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
3273 idles [ABSPRI (w)][active - 1] = w; 4643 idles [ABSPRI (w)][active - 1] = w;
3274 } 4644 }
3275 4645
3276 EV_FREQUENT_CHECK; 4646 EV_FREQUENT_CHECK;
3277} 4647}
3278 4648
3279void 4649void
3280ev_idle_stop (EV_P_ ev_idle *w) 4650ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
3281{ 4651{
3282 clear_pending (EV_A_ (W)w); 4652 clear_pending (EV_A_ (W)w);
3283 if (expect_false (!ev_is_active (w))) 4653 if (expect_false (!ev_is_active (w)))
3284 return; 4654 return;
3285 4655
… …
3297 4667
3298 EV_FREQUENT_CHECK; 4668 EV_FREQUENT_CHECK;
3299} 4669}
3300#endif 4670#endif
3301 4671
4672#if EV_PREPARE_ENABLE
3302void 4673void
3303ev_prepare_start (EV_P_ ev_prepare *w) 4674ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
3304{ 4675{
3305 if (expect_false (ev_is_active (w))) 4676 if (expect_false (ev_is_active (w)))
3306 return; 4677 return;
3307 4678
3308 EV_FREQUENT_CHECK; 4679 EV_FREQUENT_CHECK;
3309 4680
3310 ev_start (EV_A_ (W)w, ++preparecnt); 4681 ev_start (EV_A_ (W)w, ++preparecnt);
3311 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4682 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
3312 prepares [preparecnt - 1] = w; 4683 prepares [preparecnt - 1] = w;
3313 4684
3314 EV_FREQUENT_CHECK; 4685 EV_FREQUENT_CHECK;
3315} 4686}
3316 4687
3317void 4688void
3318ev_prepare_stop (EV_P_ ev_prepare *w) 4689ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
3319{ 4690{
3320 clear_pending (EV_A_ (W)w); 4691 clear_pending (EV_A_ (W)w);
3321 if (expect_false (!ev_is_active (w))) 4692 if (expect_false (!ev_is_active (w)))
3322 return; 4693 return;
3323 4694
… …
3332 4703
3333 ev_stop (EV_A_ (W)w); 4704 ev_stop (EV_A_ (W)w);
3334 4705
3335 EV_FREQUENT_CHECK; 4706 EV_FREQUENT_CHECK;
3336} 4707}
4708#endif
3337 4709
4710#if EV_CHECK_ENABLE
3338void 4711void
3339ev_check_start (EV_P_ ev_check *w) 4712ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
3340{ 4713{
3341 if (expect_false (ev_is_active (w))) 4714 if (expect_false (ev_is_active (w)))
3342 return; 4715 return;
3343 4716
3344 EV_FREQUENT_CHECK; 4717 EV_FREQUENT_CHECK;
3345 4718
3346 ev_start (EV_A_ (W)w, ++checkcnt); 4719 ev_start (EV_A_ (W)w, ++checkcnt);
3347 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 4720 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
3348 checks [checkcnt - 1] = w; 4721 checks [checkcnt - 1] = w;
3349 4722
3350 EV_FREQUENT_CHECK; 4723 EV_FREQUENT_CHECK;
3351} 4724}
3352 4725
3353void 4726void
3354ev_check_stop (EV_P_ ev_check *w) 4727ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
3355{ 4728{
3356 clear_pending (EV_A_ (W)w); 4729 clear_pending (EV_A_ (W)w);
3357 if (expect_false (!ev_is_active (w))) 4730 if (expect_false (!ev_is_active (w)))
3358 return; 4731 return;
3359 4732
… …
3368 4741
3369 ev_stop (EV_A_ (W)w); 4742 ev_stop (EV_A_ (W)w);
3370 4743
3371 EV_FREQUENT_CHECK; 4744 EV_FREQUENT_CHECK;
3372} 4745}
4746#endif
3373 4747
3374#if EV_EMBED_ENABLE 4748#if EV_EMBED_ENABLE
3375void noinline 4749noinline
4750void
3376ev_embed_sweep (EV_P_ ev_embed *w) 4751ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
3377{ 4752{
3378 ev_loop (w->other, EVLOOP_NONBLOCK); 4753 ev_run (w->other, EVRUN_NOWAIT);
3379} 4754}
3380 4755
3381static void 4756static void
3382embed_io_cb (EV_P_ ev_io *io, int revents) 4757embed_io_cb (EV_P_ ev_io *io, int revents)
3383{ 4758{
3384 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4759 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3385 4760
3386 if (ev_cb (w)) 4761 if (ev_cb (w))
3387 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4762 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3388 else 4763 else
3389 ev_loop (w->other, EVLOOP_NONBLOCK); 4764 ev_run (w->other, EVRUN_NOWAIT);
3390} 4765}
3391 4766
3392static void 4767static void
3393embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4768embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3394{ 4769{
… …
3398 EV_P = w->other; 4773 EV_P = w->other;
3399 4774
3400 while (fdchangecnt) 4775 while (fdchangecnt)
3401 { 4776 {
3402 fd_reify (EV_A); 4777 fd_reify (EV_A);
3403 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4778 ev_run (EV_A_ EVRUN_NOWAIT);
3404 } 4779 }
3405 } 4780 }
3406} 4781}
3407 4782
3408static void 4783static void
… …
3414 4789
3415 { 4790 {
3416 EV_P = w->other; 4791 EV_P = w->other;
3417 4792
3418 ev_loop_fork (EV_A); 4793 ev_loop_fork (EV_A);
3419 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4794 ev_run (EV_A_ EVRUN_NOWAIT);
3420 } 4795 }
3421 4796
3422 ev_embed_start (EV_A_ w); 4797 ev_embed_start (EV_A_ w);
3423} 4798}
3424 4799
… …
3429 ev_idle_stop (EV_A_ idle); 4804 ev_idle_stop (EV_A_ idle);
3430} 4805}
3431#endif 4806#endif
3432 4807
3433void 4808void
3434ev_embed_start (EV_P_ ev_embed *w) 4809ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
3435{ 4810{
3436 if (expect_false (ev_is_active (w))) 4811 if (expect_false (ev_is_active (w)))
3437 return; 4812 return;
3438 4813
3439 { 4814 {
… …
3460 4835
3461 EV_FREQUENT_CHECK; 4836 EV_FREQUENT_CHECK;
3462} 4837}
3463 4838
3464void 4839void
3465ev_embed_stop (EV_P_ ev_embed *w) 4840ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
3466{ 4841{
3467 clear_pending (EV_A_ (W)w); 4842 clear_pending (EV_A_ (W)w);
3468 if (expect_false (!ev_is_active (w))) 4843 if (expect_false (!ev_is_active (w)))
3469 return; 4844 return;
3470 4845
… …
3480} 4855}
3481#endif 4856#endif
3482 4857
3483#if EV_FORK_ENABLE 4858#if EV_FORK_ENABLE
3484void 4859void
3485ev_fork_start (EV_P_ ev_fork *w) 4860ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
3486{ 4861{
3487 if (expect_false (ev_is_active (w))) 4862 if (expect_false (ev_is_active (w)))
3488 return; 4863 return;
3489 4864
3490 EV_FREQUENT_CHECK; 4865 EV_FREQUENT_CHECK;
3491 4866
3492 ev_start (EV_A_ (W)w, ++forkcnt); 4867 ev_start (EV_A_ (W)w, ++forkcnt);
3493 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 4868 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
3494 forks [forkcnt - 1] = w; 4869 forks [forkcnt - 1] = w;
3495 4870
3496 EV_FREQUENT_CHECK; 4871 EV_FREQUENT_CHECK;
3497} 4872}
3498 4873
3499void 4874void
3500ev_fork_stop (EV_P_ ev_fork *w) 4875ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
3501{ 4876{
3502 clear_pending (EV_A_ (W)w); 4877 clear_pending (EV_A_ (W)w);
3503 if (expect_false (!ev_is_active (w))) 4878 if (expect_false (!ev_is_active (w)))
3504 return; 4879 return;
3505 4880
… …
3516 4891
3517 EV_FREQUENT_CHECK; 4892 EV_FREQUENT_CHECK;
3518} 4893}
3519#endif 4894#endif
3520 4895
3521#if EV_ASYNC_ENABLE 4896#if EV_CLEANUP_ENABLE
3522void 4897void
3523ev_async_start (EV_P_ ev_async *w) 4898ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
3524{ 4899{
3525 if (expect_false (ev_is_active (w))) 4900 if (expect_false (ev_is_active (w)))
3526 return; 4901 return;
3527 4902
3528 evpipe_init (EV_A);
3529
3530 EV_FREQUENT_CHECK; 4903 EV_FREQUENT_CHECK;
3531 4904
3532 ev_start (EV_A_ (W)w, ++asynccnt); 4905 ev_start (EV_A_ (W)w, ++cleanupcnt);
3533 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 4906 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
3534 asyncs [asynccnt - 1] = w; 4907 cleanups [cleanupcnt - 1] = w;
3535 4908
4909 /* cleanup watchers should never keep a refcount on the loop */
4910 ev_unref (EV_A);
3536 EV_FREQUENT_CHECK; 4911 EV_FREQUENT_CHECK;
3537} 4912}
3538 4913
3539void 4914void
3540ev_async_stop (EV_P_ ev_async *w) 4915ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
3541{ 4916{
3542 clear_pending (EV_A_ (W)w); 4917 clear_pending (EV_A_ (W)w);
3543 if (expect_false (!ev_is_active (w))) 4918 if (expect_false (!ev_is_active (w)))
3544 return; 4919 return;
3545 4920
3546 EV_FREQUENT_CHECK; 4921 EV_FREQUENT_CHECK;
4922 ev_ref (EV_A);
4923
4924 {
4925 int active = ev_active (w);
4926
4927 cleanups [active - 1] = cleanups [--cleanupcnt];
4928 ev_active (cleanups [active - 1]) = active;
4929 }
4930
4931 ev_stop (EV_A_ (W)w);
4932
4933 EV_FREQUENT_CHECK;
4934}
4935#endif
4936
4937#if EV_ASYNC_ENABLE
4938void
4939ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
4940{
4941 if (expect_false (ev_is_active (w)))
4942 return;
4943
4944 w->sent = 0;
4945
4946 evpipe_init (EV_A);
4947
4948 EV_FREQUENT_CHECK;
4949
4950 ev_start (EV_A_ (W)w, ++asynccnt);
4951 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
4952 asyncs [asynccnt - 1] = w;
4953
4954 EV_FREQUENT_CHECK;
4955}
4956
4957void
4958ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
4959{
4960 clear_pending (EV_A_ (W)w);
4961 if (expect_false (!ev_is_active (w)))
4962 return;
4963
4964 EV_FREQUENT_CHECK;
3547 4965
3548 { 4966 {
3549 int active = ev_active (w); 4967 int active = ev_active (w);
3550 4968
3551 asyncs [active - 1] = asyncs [--asynccnt]; 4969 asyncs [active - 1] = asyncs [--asynccnt];
… …
3556 4974
3557 EV_FREQUENT_CHECK; 4975 EV_FREQUENT_CHECK;
3558} 4976}
3559 4977
3560void 4978void
3561ev_async_send (EV_P_ ev_async *w) 4979ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
3562{ 4980{
3563 w->sent = 1; 4981 w->sent = 1;
3564 evpipe_write (EV_A_ &async_pending); 4982 evpipe_write (EV_A_ &async_pending);
3565} 4983}
3566#endif 4984#endif
… …
3603 5021
3604 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5022 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3605} 5023}
3606 5024
3607void 5025void
3608ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 5026ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
3609{ 5027{
3610 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5028 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3611
3612 if (expect_false (!once))
3613 {
3614 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
3615 return;
3616 }
3617 5029
3618 once->cb = cb; 5030 once->cb = cb;
3619 once->arg = arg; 5031 once->arg = arg;
3620 5032
3621 ev_init (&once->io, once_cb_io); 5033 ev_init (&once->io, once_cb_io);
… …
3634} 5046}
3635 5047
3636/*****************************************************************************/ 5048/*****************************************************************************/
3637 5049
3638#if EV_WALK_ENABLE 5050#if EV_WALK_ENABLE
5051ecb_cold
3639void 5052void
3640ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 5053ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
3641{ 5054{
3642 int i, j; 5055 int i, j;
3643 ev_watcher_list *wl, *wn; 5056 ev_watcher_list *wl, *wn;
3644 5057
3645 if (types & (EV_IO | EV_EMBED)) 5058 if (types & (EV_IO | EV_EMBED))
… …
3688 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 5101 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3689#endif 5102#endif
3690 5103
3691#if EV_IDLE_ENABLE 5104#if EV_IDLE_ENABLE
3692 if (types & EV_IDLE) 5105 if (types & EV_IDLE)
3693 for (j = NUMPRI; i--; ) 5106 for (j = NUMPRI; j--; )
3694 for (i = idlecnt [j]; i--; ) 5107 for (i = idlecnt [j]; i--; )
3695 cb (EV_A_ EV_IDLE, idles [j][i]); 5108 cb (EV_A_ EV_IDLE, idles [j][i]);
3696#endif 5109#endif
3697 5110
3698#if EV_FORK_ENABLE 5111#if EV_FORK_ENABLE
… …
3706 if (types & EV_ASYNC) 5119 if (types & EV_ASYNC)
3707 for (i = asynccnt; i--; ) 5120 for (i = asynccnt; i--; )
3708 cb (EV_A_ EV_ASYNC, asyncs [i]); 5121 cb (EV_A_ EV_ASYNC, asyncs [i]);
3709#endif 5122#endif
3710 5123
5124#if EV_PREPARE_ENABLE
3711 if (types & EV_PREPARE) 5125 if (types & EV_PREPARE)
3712 for (i = preparecnt; i--; ) 5126 for (i = preparecnt; i--; )
3713#if EV_EMBED_ENABLE 5127# if EV_EMBED_ENABLE
3714 if (ev_cb (prepares [i]) != embed_prepare_cb) 5128 if (ev_cb (prepares [i]) != embed_prepare_cb)
3715#endif 5129# endif
3716 cb (EV_A_ EV_PREPARE, prepares [i]); 5130 cb (EV_A_ EV_PREPARE, prepares [i]);
5131#endif
3717 5132
5133#if EV_CHECK_ENABLE
3718 if (types & EV_CHECK) 5134 if (types & EV_CHECK)
3719 for (i = checkcnt; i--; ) 5135 for (i = checkcnt; i--; )
3720 cb (EV_A_ EV_CHECK, checks [i]); 5136 cb (EV_A_ EV_CHECK, checks [i]);
5137#endif
3721 5138
5139#if EV_SIGNAL_ENABLE
3722 if (types & EV_SIGNAL) 5140 if (types & EV_SIGNAL)
3723 for (i = 0; i < EV_NSIG - 1; ++i) 5141 for (i = 0; i < EV_NSIG - 1; ++i)
3724 for (wl = signals [i].head; wl; ) 5142 for (wl = signals [i].head; wl; )
3725 { 5143 {
3726 wn = wl->next; 5144 wn = wl->next;
3727 cb (EV_A_ EV_SIGNAL, wl); 5145 cb (EV_A_ EV_SIGNAL, wl);
3728 wl = wn; 5146 wl = wn;
3729 } 5147 }
5148#endif
3730 5149
5150#if EV_CHILD_ENABLE
3731 if (types & EV_CHILD) 5151 if (types & EV_CHILD)
3732 for (i = EV_PID_HASHSIZE; i--; ) 5152 for (i = (EV_PID_HASHSIZE); i--; )
3733 for (wl = childs [i]; wl; ) 5153 for (wl = childs [i]; wl; )
3734 { 5154 {
3735 wn = wl->next; 5155 wn = wl->next;
3736 cb (EV_A_ EV_CHILD, wl); 5156 cb (EV_A_ EV_CHILD, wl);
3737 wl = wn; 5157 wl = wn;
3738 } 5158 }
5159#endif
3739/* EV_STAT 0x00001000 /* stat data changed */ 5160/* EV_STAT 0x00001000 /* stat data changed */
3740/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 5161/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3741} 5162}
3742#endif 5163#endif
3743 5164
3744#if EV_MULTIPLICITY 5165#if EV_MULTIPLICITY
3745 #include "ev_wrap.h" 5166 #include "ev_wrap.h"
3746#endif 5167#endif
3747 5168
3748#ifdef __cplusplus
3749}
3750#endif
3751

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