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Comparing libev/ev.c (file contents):
Revision 1.332 by root, Tue Mar 9 08:58:17 2010 UTC vs.
Revision 1.513 by root, Fri Dec 20 05:20:23 2019 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009,2010 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007-2019 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
10 * 1. Redistributions of source code must retain the above copyright notice, 10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer. 11 * this list of conditions and the following disclaimer.
12 * 12 *
13 * 2. Redistributions in binary form must reproduce the above copyright 13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the 14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution. 15 * documentation and/or other materials provided with the distribution.
16 * 16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- 18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO 19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- 20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
… …
35 * and other provisions required by the GPL. If you do not delete the 35 * and other provisions required by the GPL. If you do not delete the
36 * provisions above, a recipient may use your version of this file under 36 * provisions above, a recipient may use your version of this file under
37 * either the BSD or the GPL. 37 * either the BSD or the GPL.
38 */ 38 */
39 39
40#ifdef __cplusplus
41extern "C" {
42#endif
43
44/* this big block deduces configuration from config.h */ 40/* this big block deduces configuration from config.h */
45#ifndef EV_STANDALONE 41#ifndef EV_STANDALONE
46# ifdef EV_CONFIG_H 42# ifdef EV_CONFIG_H
47# include EV_CONFIG_H 43# include EV_CONFIG_H
48# else 44# else
49# include "config.h" 45# include "config.h"
46# endif
47
48# if HAVE_FLOOR
49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1
51# endif
50# endif 52# endif
51 53
52# if HAVE_CLOCK_SYSCALL 54# if HAVE_CLOCK_SYSCALL
53# ifndef EV_USE_CLOCK_SYSCALL 55# ifndef EV_USE_CLOCK_SYSCALL
54# define EV_USE_CLOCK_SYSCALL 1 56# define EV_USE_CLOCK_SYSCALL 1
… …
57# endif 59# endif
58# ifndef EV_USE_MONOTONIC 60# ifndef EV_USE_MONOTONIC
59# define EV_USE_MONOTONIC 1 61# define EV_USE_MONOTONIC 1
60# endif 62# endif
61# endif 63# endif
62# elif !defined(EV_USE_CLOCK_SYSCALL) 64# elif !defined EV_USE_CLOCK_SYSCALL
63# define EV_USE_CLOCK_SYSCALL 0 65# define EV_USE_CLOCK_SYSCALL 0
64# endif 66# endif
65 67
66# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
67# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
… …
77# ifndef EV_USE_REALTIME 79# ifndef EV_USE_REALTIME
78# define EV_USE_REALTIME 0 80# define EV_USE_REALTIME 0
79# endif 81# endif
80# endif 82# endif
81 83
84# if HAVE_NANOSLEEP
82# ifndef EV_USE_NANOSLEEP 85# ifndef EV_USE_NANOSLEEP
83# if HAVE_NANOSLEEP
84# define EV_USE_NANOSLEEP 1 86# define EV_USE_NANOSLEEP EV_FEATURE_OS
87# endif
85# else 88# else
89# undef EV_USE_NANOSLEEP
86# define EV_USE_NANOSLEEP 0 90# define EV_USE_NANOSLEEP 0
91# endif
92
93# if HAVE_SELECT && HAVE_SYS_SELECT_H
94# ifndef EV_USE_SELECT
95# define EV_USE_SELECT EV_FEATURE_BACKENDS
87# endif 96# endif
97# else
98# undef EV_USE_SELECT
99# define EV_USE_SELECT 0
88# endif 100# endif
89 101
102# if HAVE_POLL && HAVE_POLL_H
90# ifndef EV_USE_SELECT 103# ifndef EV_USE_POLL
91# if HAVE_SELECT && HAVE_SYS_SELECT_H 104# define EV_USE_POLL EV_FEATURE_BACKENDS
92# define EV_USE_SELECT 1
93# else
94# define EV_USE_SELECT 0
95# endif 105# endif
96# endif
97
98# ifndef EV_USE_POLL
99# if HAVE_POLL && HAVE_POLL_H
100# define EV_USE_POLL 1
101# else 106# else
107# undef EV_USE_POLL
102# define EV_USE_POLL 0 108# define EV_USE_POLL 0
103# endif
104# endif 109# endif
105 110
106# ifndef EV_USE_EPOLL
107# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 111# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
108# define EV_USE_EPOLL 1 112# ifndef EV_USE_EPOLL
109# else 113# define EV_USE_EPOLL EV_FEATURE_BACKENDS
110# define EV_USE_EPOLL 0
111# endif 114# endif
115# else
116# undef EV_USE_EPOLL
117# define EV_USE_EPOLL 0
112# endif 118# endif
113 119
114# ifndef EV_USE_KQUEUE 120# if HAVE_LINUX_AIO_ABI_H
115# if HAVE_KQUEUE && HAVE_SYS_EVENT_H 121# ifndef EV_USE_LINUXAIO
116# define EV_USE_KQUEUE 1 122# define EV_USE_LINUXAIO EV_FEATURE_BACKENDS
117# else
118# define EV_USE_KQUEUE 0
119# endif 123# endif
124# else
125# undef EV_USE_LINUXAIO
126# define EV_USE_LINUXAIO 0
120# endif 127# endif
121 128
129# if HAVE_LINUX_FS_H && HAVE_SYS_TIMERFD_H && HAVE_KERNEL_RWF_T
122# ifndef EV_USE_PORT 130# ifndef EV_USE_IOURING
123# if HAVE_PORT_H && HAVE_PORT_CREATE 131# define EV_USE_IOURING EV_FEATURE_BACKENDS
124# define EV_USE_PORT 1
125# else
126# define EV_USE_PORT 0
127# endif 132# endif
128# endif
129
130# ifndef EV_USE_INOTIFY
131# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
132# define EV_USE_INOTIFY 1
133# else 133# else
134# undef EV_USE_IOURING
134# define EV_USE_INOTIFY 0 135# define EV_USE_IOURING 0
135# endif
136# endif
137
138# ifndef EV_USE_SIGNALFD
139# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
140# define EV_USE_SIGNALFD 1
141# else
142# define EV_USE_SIGNALFD 0
143# endif
144# endif
145
146# ifndef EV_USE_EVENTFD
147# if HAVE_EVENTFD
148# define EV_USE_EVENTFD 1
149# else
150# define EV_USE_EVENTFD 0
151# endif
152# endif 136# endif
153 137
138# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
139# ifndef EV_USE_KQUEUE
140# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
141# endif
142# else
143# undef EV_USE_KQUEUE
144# define EV_USE_KQUEUE 0
154#endif 145# endif
146
147# if HAVE_PORT_H && HAVE_PORT_CREATE
148# ifndef EV_USE_PORT
149# define EV_USE_PORT EV_FEATURE_BACKENDS
150# endif
151# else
152# undef EV_USE_PORT
153# define EV_USE_PORT 0
154# endif
155 155
156#include <math.h> 156# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
157# ifndef EV_USE_INOTIFY
158# define EV_USE_INOTIFY EV_FEATURE_OS
159# endif
160# else
161# undef EV_USE_INOTIFY
162# define EV_USE_INOTIFY 0
163# endif
164
165# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
166# ifndef EV_USE_SIGNALFD
167# define EV_USE_SIGNALFD EV_FEATURE_OS
168# endif
169# else
170# undef EV_USE_SIGNALFD
171# define EV_USE_SIGNALFD 0
172# endif
173
174# if HAVE_EVENTFD
175# ifndef EV_USE_EVENTFD
176# define EV_USE_EVENTFD EV_FEATURE_OS
177# endif
178# else
179# undef EV_USE_EVENTFD
180# define EV_USE_EVENTFD 0
181# endif
182
183#endif
184
185/* OS X, in its infinite idiocy, actually HARDCODES
186 * a limit of 1024 into their select. Where people have brains,
187 * OS X engineers apparently have a vacuum. Or maybe they were
188 * ordered to have a vacuum, or they do anything for money.
189 * This might help. Or not.
190 * Note that this must be defined early, as other include files
191 * will rely on this define as well.
192 */
193#define _DARWIN_UNLIMITED_SELECT 1
194
157#include <stdlib.h> 195#include <stdlib.h>
158#include <string.h> 196#include <string.h>
159#include <fcntl.h> 197#include <fcntl.h>
160#include <stddef.h> 198#include <stddef.h>
161 199
… …
171 209
172#ifdef EV_H 210#ifdef EV_H
173# include EV_H 211# include EV_H
174#else 212#else
175# include "ev.h" 213# include "ev.h"
214#endif
215
216#if EV_NO_THREADS
217# undef EV_NO_SMP
218# define EV_NO_SMP 1
219# undef ECB_NO_THREADS
220# define ECB_NO_THREADS 1
221#endif
222#if EV_NO_SMP
223# undef EV_NO_SMP
224# define ECB_NO_SMP 1
176#endif 225#endif
177 226
178#ifndef _WIN32 227#ifndef _WIN32
179# include <sys/time.h> 228# include <sys/time.h>
180# include <sys/wait.h> 229# include <sys/wait.h>
181# include <unistd.h> 230# include <unistd.h>
182#else 231#else
183# include <io.h> 232# include <io.h>
184# define WIN32_LEAN_AND_MEAN 233# define WIN32_LEAN_AND_MEAN
234# include <winsock2.h>
185# include <windows.h> 235# include <windows.h>
186# ifndef EV_SELECT_IS_WINSOCKET 236# ifndef EV_SELECT_IS_WINSOCKET
187# define EV_SELECT_IS_WINSOCKET 1 237# define EV_SELECT_IS_WINSOCKET 1
188# endif 238# endif
189# undef EV_AVOID_STDIO 239# undef EV_AVOID_STDIO
190#endif 240#endif
191 241
192/* this block tries to deduce configuration from header-defined symbols and defaults */ 242/* this block tries to deduce configuration from header-defined symbols and defaults */
193 243
194/* try to deduce the maximum number of signals on this platform */ 244/* try to deduce the maximum number of signals on this platform */
195#if defined (EV_NSIG) 245#if defined EV_NSIG
196/* use what's provided */ 246/* use what's provided */
197#elif defined (NSIG) 247#elif defined NSIG
198# define EV_NSIG (NSIG) 248# define EV_NSIG (NSIG)
199#elif defined(_NSIG) 249#elif defined _NSIG
200# define EV_NSIG (_NSIG) 250# define EV_NSIG (_NSIG)
201#elif defined (SIGMAX) 251#elif defined SIGMAX
202# define EV_NSIG (SIGMAX+1) 252# define EV_NSIG (SIGMAX+1)
203#elif defined (SIG_MAX) 253#elif defined SIG_MAX
204# define EV_NSIG (SIG_MAX+1) 254# define EV_NSIG (SIG_MAX+1)
205#elif defined (_SIG_MAX) 255#elif defined _SIG_MAX
206# define EV_NSIG (_SIG_MAX+1) 256# define EV_NSIG (_SIG_MAX+1)
207#elif defined (MAXSIG) 257#elif defined MAXSIG
208# define EV_NSIG (MAXSIG+1) 258# define EV_NSIG (MAXSIG+1)
209#elif defined (MAX_SIG) 259#elif defined MAX_SIG
210# define EV_NSIG (MAX_SIG+1) 260# define EV_NSIG (MAX_SIG+1)
211#elif defined (SIGARRAYSIZE) 261#elif defined SIGARRAYSIZE
212# define EV_NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */ 262# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
213#elif defined (_sys_nsig) 263#elif defined _sys_nsig
214# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 264# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
215#else 265#else
216# error "unable to find value for NSIG, please report" 266# define EV_NSIG (8 * sizeof (sigset_t) + 1)
217/* to make it compile regardless, just remove the above line */ 267#endif
218# define EV_NSIG 65 268
269#ifndef EV_USE_FLOOR
270# define EV_USE_FLOOR 0
219#endif 271#endif
220 272
221#ifndef EV_USE_CLOCK_SYSCALL 273#ifndef EV_USE_CLOCK_SYSCALL
222# if __linux && __GLIBC__ >= 2 274# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
223# define EV_USE_CLOCK_SYSCALL 1 275# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
224# else 276# else
225# define EV_USE_CLOCK_SYSCALL 0 277# define EV_USE_CLOCK_SYSCALL 0
226# endif 278# endif
227#endif 279#endif
228 280
281#if !(_POSIX_TIMERS > 0)
282# ifndef EV_USE_MONOTONIC
283# define EV_USE_MONOTONIC 0
284# endif
285# ifndef EV_USE_REALTIME
286# define EV_USE_REALTIME 0
287# endif
288#endif
289
229#ifndef EV_USE_MONOTONIC 290#ifndef EV_USE_MONOTONIC
230# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 291# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
231# define EV_USE_MONOTONIC 1 292# define EV_USE_MONOTONIC EV_FEATURE_OS
232# else 293# else
233# define EV_USE_MONOTONIC 0 294# define EV_USE_MONOTONIC 0
234# endif 295# endif
235#endif 296#endif
236 297
… …
238# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 299# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
239#endif 300#endif
240 301
241#ifndef EV_USE_NANOSLEEP 302#ifndef EV_USE_NANOSLEEP
242# if _POSIX_C_SOURCE >= 199309L 303# if _POSIX_C_SOURCE >= 199309L
243# define EV_USE_NANOSLEEP 1 304# define EV_USE_NANOSLEEP EV_FEATURE_OS
244# else 305# else
245# define EV_USE_NANOSLEEP 0 306# define EV_USE_NANOSLEEP 0
246# endif 307# endif
247#endif 308#endif
248 309
249#ifndef EV_USE_SELECT 310#ifndef EV_USE_SELECT
250# define EV_USE_SELECT 1 311# define EV_USE_SELECT EV_FEATURE_BACKENDS
251#endif 312#endif
252 313
253#ifndef EV_USE_POLL 314#ifndef EV_USE_POLL
254# ifdef _WIN32 315# ifdef _WIN32
255# define EV_USE_POLL 0 316# define EV_USE_POLL 0
256# else 317# else
257# define EV_USE_POLL 1 318# define EV_USE_POLL EV_FEATURE_BACKENDS
258# endif 319# endif
259#endif 320#endif
260 321
261#ifndef EV_USE_EPOLL 322#ifndef EV_USE_EPOLL
262# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 323# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
263# define EV_USE_EPOLL 1 324# define EV_USE_EPOLL EV_FEATURE_BACKENDS
264# else 325# else
265# define EV_USE_EPOLL 0 326# define EV_USE_EPOLL 0
266# endif 327# endif
267#endif 328#endif
268 329
… …
272 333
273#ifndef EV_USE_PORT 334#ifndef EV_USE_PORT
274# define EV_USE_PORT 0 335# define EV_USE_PORT 0
275#endif 336#endif
276 337
338#ifndef EV_USE_LINUXAIO
339# if __linux /* libev currently assumes linux/aio_abi.h is always available on linux */
340# define EV_USE_LINUXAIO 1
341# else
342# define EV_USE_LINUXAIO 0
343# endif
344#endif
345
346#ifndef EV_USE_IOURING
347# if __linux /* later checks might disable again */
348# define EV_USE_IOURING 1
349# else
350# define EV_USE_IOURING 0
351# endif
352#endif
353
277#ifndef EV_USE_INOTIFY 354#ifndef EV_USE_INOTIFY
278# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 355# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
279# define EV_USE_INOTIFY 1 356# define EV_USE_INOTIFY EV_FEATURE_OS
280# else 357# else
281# define EV_USE_INOTIFY 0 358# define EV_USE_INOTIFY 0
282# endif 359# endif
283#endif 360#endif
284 361
285#ifndef EV_PID_HASHSIZE 362#ifndef EV_PID_HASHSIZE
286# if EV_MINIMAL 363# 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 364#endif
292 365
293#ifndef EV_INOTIFY_HASHSIZE 366#ifndef EV_INOTIFY_HASHSIZE
294# if EV_MINIMAL 367# 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 368#endif
300 369
301#ifndef EV_USE_EVENTFD 370#ifndef EV_USE_EVENTFD
302# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 371# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
303# define EV_USE_EVENTFD 1 372# define EV_USE_EVENTFD EV_FEATURE_OS
304# else 373# else
305# define EV_USE_EVENTFD 0 374# define EV_USE_EVENTFD 0
306# endif 375# endif
307#endif 376#endif
308 377
309#ifndef EV_USE_SIGNALFD 378#ifndef EV_USE_SIGNALFD
310# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 379# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
311# define EV_USE_SIGNALFD 1 380# define EV_USE_SIGNALFD EV_FEATURE_OS
312# else 381# else
313# define EV_USE_SIGNALFD 0 382# define EV_USE_SIGNALFD 0
314# endif 383# endif
315#endif 384#endif
316 385
… …
319# define EV_USE_4HEAP 1 388# define EV_USE_4HEAP 1
320# define EV_HEAP_CACHE_AT 1 389# define EV_HEAP_CACHE_AT 1
321#endif 390#endif
322 391
323#ifndef EV_VERIFY 392#ifndef EV_VERIFY
324# define EV_VERIFY !EV_MINIMAL 393# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
325#endif 394#endif
326 395
327#ifndef EV_USE_4HEAP 396#ifndef EV_USE_4HEAP
328# define EV_USE_4HEAP !EV_MINIMAL 397# define EV_USE_4HEAP EV_FEATURE_DATA
329#endif 398#endif
330 399
331#ifndef EV_HEAP_CACHE_AT 400#ifndef EV_HEAP_CACHE_AT
332# define EV_HEAP_CACHE_AT !EV_MINIMAL 401# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
402#endif
403
404#ifdef __ANDROID__
405/* supposedly, android doesn't typedef fd_mask */
406# undef EV_USE_SELECT
407# define EV_USE_SELECT 0
408/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
409# undef EV_USE_CLOCK_SYSCALL
410# define EV_USE_CLOCK_SYSCALL 0
411#endif
412
413/* aix's poll.h seems to cause lots of trouble */
414#ifdef _AIX
415/* AIX has a completely broken poll.h header */
416# undef EV_USE_POLL
417# define EV_USE_POLL 0
333#endif 418#endif
334 419
335/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 420/* 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. */ 421/* which makes programs even slower. might work on other unices, too. */
337#if EV_USE_CLOCK_SYSCALL 422#if EV_USE_CLOCK_SYSCALL
338# include <syscall.h> 423# include <sys/syscall.h>
339# ifdef SYS_clock_gettime 424# ifdef SYS_clock_gettime
340# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 425# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
341# undef EV_USE_MONOTONIC 426# undef EV_USE_MONOTONIC
342# define EV_USE_MONOTONIC 1 427# define EV_USE_MONOTONIC 1
428# define EV_NEED_SYSCALL 1
343# else 429# else
344# undef EV_USE_CLOCK_SYSCALL 430# undef EV_USE_CLOCK_SYSCALL
345# define EV_USE_CLOCK_SYSCALL 0 431# define EV_USE_CLOCK_SYSCALL 0
346# endif 432# endif
347#endif 433#endif
348 434
349/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 435/* this block fixes any misconfiguration where we know we run into trouble otherwise */
350 436
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 437#ifndef CLOCK_MONOTONIC
358# undef EV_USE_MONOTONIC 438# undef EV_USE_MONOTONIC
359# define EV_USE_MONOTONIC 0 439# define EV_USE_MONOTONIC 0
360#endif 440#endif
361 441
… …
367#if !EV_STAT_ENABLE 447#if !EV_STAT_ENABLE
368# undef EV_USE_INOTIFY 448# undef EV_USE_INOTIFY
369# define EV_USE_INOTIFY 0 449# define EV_USE_INOTIFY 0
370#endif 450#endif
371 451
452#if __linux && EV_USE_IOURING
453# include <linux/version.h>
454# if LINUX_VERSION_CODE < KERNEL_VERSION(4,14,0)
455# undef EV_USE_IOURING
456# define EV_USE_IOURING 0
457# endif
458#endif
459
372#if !EV_USE_NANOSLEEP 460#if !EV_USE_NANOSLEEP
373# ifndef _WIN32 461/* hp-ux has it in sys/time.h, which we unconditionally include above */
462# if !defined _WIN32 && !defined __hpux
374# include <sys/select.h> 463# include <sys/select.h>
375# endif 464# endif
376#endif 465#endif
377 466
467#if EV_USE_LINUXAIO
468# include <sys/syscall.h>
469# if SYS_io_getevents && EV_USE_EPOLL /* linuxaio backend requires epoll backend */
470# define EV_NEED_SYSCALL 1
471# else
472# undef EV_USE_LINUXAIO
473# define EV_USE_LINUXAIO 0
474# endif
475#endif
476
477#if EV_USE_IOURING
478# include <sys/syscall.h>
479# if !SYS_io_uring_setup && __linux && !__alpha
480# define SYS_io_uring_setup 425
481# define SYS_io_uring_enter 426
482# define SYS_io_uring_wregister 427
483# endif
484# if SYS_io_uring_setup && EV_USE_EPOLL /* iouring backend requires epoll backend */
485# define EV_NEED_SYSCALL 1
486# else
487# undef EV_USE_IOURING
488# define EV_USE_IOURING 0
489# endif
490#endif
491
378#if EV_USE_INOTIFY 492#if EV_USE_INOTIFY
379# include <sys/utsname.h>
380# include <sys/statfs.h> 493# include <sys/statfs.h>
381# include <sys/inotify.h> 494# include <sys/inotify.h>
382/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 495/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
383# ifndef IN_DONT_FOLLOW 496# ifndef IN_DONT_FOLLOW
384# undef EV_USE_INOTIFY 497# undef EV_USE_INOTIFY
385# define EV_USE_INOTIFY 0 498# define EV_USE_INOTIFY 0
386# endif 499# endif
387#endif
388
389#if EV_SELECT_IS_WINSOCKET
390# include <winsock.h>
391#endif 500#endif
392 501
393#if EV_USE_EVENTFD 502#if EV_USE_EVENTFD
394/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 503/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
395# include <stdint.h> 504# include <stdint.h>
… …
401# define EFD_CLOEXEC O_CLOEXEC 510# define EFD_CLOEXEC O_CLOEXEC
402# else 511# else
403# define EFD_CLOEXEC 02000000 512# define EFD_CLOEXEC 02000000
404# endif 513# endif
405# endif 514# endif
406# ifdef __cplusplus
407extern "C" {
408# endif
409int (eventfd) (unsigned int initval, int flags); 515EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
410# ifdef __cplusplus
411}
412# endif
413#endif 516#endif
414 517
415#if EV_USE_SIGNALFD 518#if EV_USE_SIGNALFD
416/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 519/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
417# include <stdint.h> 520# include <stdint.h>
… …
423# define SFD_CLOEXEC O_CLOEXEC 526# define SFD_CLOEXEC O_CLOEXEC
424# else 527# else
425# define SFD_CLOEXEC 02000000 528# define SFD_CLOEXEC 02000000
426# endif 529# endif
427# endif 530# endif
428# ifdef __cplusplus
429extern "C" {
430# endif
431int signalfd (int fd, const sigset_t *mask, int flags); 531EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
432 532
433struct signalfd_siginfo 533struct signalfd_siginfo
434{ 534{
435 uint32_t ssi_signo; 535 uint32_t ssi_signo;
436 char pad[128 - sizeof (uint32_t)]; 536 char pad[128 - sizeof (uint32_t)];
437}; 537};
438# ifdef __cplusplus
439}
440# endif 538#endif
441#endif
442 539
443 540/*****************************************************************************/
444/**/
445 541
446#if EV_VERIFY >= 3 542#if EV_VERIFY >= 3
447# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 543# define EV_FREQUENT_CHECK ev_verify (EV_A)
448#else 544#else
449# define EV_FREQUENT_CHECK do { } while (0) 545# define EV_FREQUENT_CHECK do { } while (0)
450#endif 546#endif
451 547
452/* 548/*
453 * This is used to avoid floating point rounding problems. 549 * 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. 550 * This value is good at least till the year 4000.
458 * Better solutions welcome.
459 */ 551 */
460#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 552#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
553/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
461 554
462#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 555#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) */ 556#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
464 557
558/* find a portable timestamp that is "always" in the future but fits into time_t.
559 * this is quite hard, and we are mostly guessing - we handle 32 bit signed/unsigned time_t,
560 * and sizes larger than 32 bit, and maybe the unlikely floating point time_t */
561#define EV_TSTAMP_HUGE \
562 (sizeof (time_t) >= 8 ? 10000000000000. \
563 : 0 < (time_t)4294967295 ? 4294967295. \
564 : 2147483647.) \
565
566#ifndef EV_TS_CONST
567# define EV_TS_CONST(nv) nv
568# define EV_TS_TO_MSEC(a) a * 1e3 + 0.9999
569# define EV_TS_FROM_USEC(us) us * 1e-6
570# define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
571# define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
572# define EV_TV_GET(tv) ((tv).tv_sec + (tv).tv_usec * 1e-6)
573# define EV_TS_GET(ts) ((ts).tv_sec + (ts).tv_nsec * 1e-9)
574#endif
575
576/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
577/* ECB.H BEGIN */
578/*
579 * libecb - http://software.schmorp.de/pkg/libecb
580 *
581 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
582 * Copyright (©) 2011 Emanuele Giaquinta
583 * All rights reserved.
584 *
585 * Redistribution and use in source and binary forms, with or without modifica-
586 * tion, are permitted provided that the following conditions are met:
587 *
588 * 1. Redistributions of source code must retain the above copyright notice,
589 * this list of conditions and the following disclaimer.
590 *
591 * 2. Redistributions in binary form must reproduce the above copyright
592 * notice, this list of conditions and the following disclaimer in the
593 * documentation and/or other materials provided with the distribution.
594 *
595 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
596 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
597 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
598 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
599 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
600 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
601 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
602 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
603 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
604 * OF THE POSSIBILITY OF SUCH DAMAGE.
605 *
606 * Alternatively, the contents of this file may be used under the terms of
607 * the GNU General Public License ("GPL") version 2 or any later version,
608 * in which case the provisions of the GPL are applicable instead of
609 * the above. If you wish to allow the use of your version of this file
610 * only under the terms of the GPL and not to allow others to use your
611 * version of this file under the BSD license, indicate your decision
612 * by deleting the provisions above and replace them with the notice
613 * and other provisions required by the GPL. If you do not delete the
614 * provisions above, a recipient may use your version of this file under
615 * either the BSD or the GPL.
616 */
617
618#ifndef ECB_H
619#define ECB_H
620
621/* 16 bits major, 16 bits minor */
622#define ECB_VERSION 0x00010006
623
624#ifdef _WIN32
625 typedef signed char int8_t;
626 typedef unsigned char uint8_t;
627 typedef signed short int16_t;
628 typedef unsigned short uint16_t;
629 typedef signed int int32_t;
630 typedef unsigned int uint32_t;
465#if __GNUC__ >= 4 631 #if __GNUC__
466# define expect(expr,value) __builtin_expect ((expr),(value)) 632 typedef signed long long int64_t;
467# define noinline __attribute__ ((noinline)) 633 typedef unsigned long long uint64_t;
634 #else /* _MSC_VER || __BORLANDC__ */
635 typedef signed __int64 int64_t;
636 typedef unsigned __int64 uint64_t;
637 #endif
638 #ifdef _WIN64
639 #define ECB_PTRSIZE 8
640 typedef uint64_t uintptr_t;
641 typedef int64_t intptr_t;
642 #else
643 #define ECB_PTRSIZE 4
644 typedef uint32_t uintptr_t;
645 typedef int32_t intptr_t;
646 #endif
468#else 647#else
469# define expect(expr,value) (expr) 648 #include <inttypes.h>
470# define noinline 649 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
471# if __STDC_VERSION__ < 199901L && __GNUC__ < 2 650 #define ECB_PTRSIZE 8
472# define inline 651 #else
652 #define ECB_PTRSIZE 4
653 #endif
473# endif 654#endif
655
656#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
657#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
658
659/* work around x32 idiocy by defining proper macros */
660#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
661 #if _ILP32
662 #define ECB_AMD64_X32 1
663 #else
664 #define ECB_AMD64 1
474#endif 665 #endif
666#endif
475 667
476#define expect_false(expr) expect ((expr) != 0, 0) 668/* many compilers define _GNUC_ to some versions but then only implement
477#define expect_true(expr) expect ((expr) != 0, 1) 669 * what their idiot authors think are the "more important" extensions,
478#define inline_size static inline 670 * causing enormous grief in return for some better fake benchmark numbers.
479 671 * or so.
480#if EV_MINIMAL 672 * we try to detect these and simply assume they are not gcc - if they have
481# define inline_speed static noinline 673 * an issue with that they should have done it right in the first place.
674 */
675#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
676 #define ECB_GCC_VERSION(major,minor) 0
482#else 677#else
678 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
679#endif
680
681#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
682
683#if __clang__ && defined __has_builtin
684 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
685#else
686 #define ECB_CLANG_BUILTIN(x) 0
687#endif
688
689#if __clang__ && defined __has_extension
690 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
691#else
692 #define ECB_CLANG_EXTENSION(x) 0
693#endif
694
695#define ECB_CPP (__cplusplus+0)
696#define ECB_CPP11 (__cplusplus >= 201103L)
697#define ECB_CPP14 (__cplusplus >= 201402L)
698#define ECB_CPP17 (__cplusplus >= 201703L)
699
700#if ECB_CPP
701 #define ECB_C 0
702 #define ECB_STDC_VERSION 0
703#else
704 #define ECB_C 1
705 #define ECB_STDC_VERSION __STDC_VERSION__
706#endif
707
708#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
709#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
710#define ECB_C17 (ECB_STDC_VERSION >= 201710L)
711
712#if ECB_CPP
713 #define ECB_EXTERN_C extern "C"
714 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
715 #define ECB_EXTERN_C_END }
716#else
717 #define ECB_EXTERN_C extern
718 #define ECB_EXTERN_C_BEG
719 #define ECB_EXTERN_C_END
720#endif
721
722/*****************************************************************************/
723
724/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
725/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
726
727#if ECB_NO_THREADS
728 #define ECB_NO_SMP 1
729#endif
730
731#if ECB_NO_SMP
732 #define ECB_MEMORY_FENCE do { } while (0)
733#endif
734
735/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
736#if __xlC__ && ECB_CPP
737 #include <builtins.h>
738#endif
739
740#if 1400 <= _MSC_VER
741 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
742#endif
743
744#ifndef ECB_MEMORY_FENCE
745 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
746 #define ECB_MEMORY_FENCE_RELAXED __asm__ __volatile__ ("" : : : "memory")
747 #if __i386 || __i386__
748 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
749 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
750 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
751 #elif ECB_GCC_AMD64
752 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
753 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
754 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
755 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
756 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
757 #elif defined __ARM_ARCH_2__ \
758 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
759 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
760 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
761 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
762 || defined __ARM_ARCH_5TEJ__
763 /* should not need any, unless running old code on newer cpu - arm doesn't support that */
764 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
765 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
766 || defined __ARM_ARCH_6T2__
767 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
768 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
769 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
770 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
771 #elif __aarch64__
772 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
773 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
774 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
775 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
776 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
777 #elif defined __s390__ || defined __s390x__
778 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
779 #elif defined __mips__
780 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
781 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
782 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
783 #elif defined __alpha__
784 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
785 #elif defined __hppa__
786 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
787 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
788 #elif defined __ia64__
789 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
790 #elif defined __m68k__
791 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
792 #elif defined __m88k__
793 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
794 #elif defined __sh__
795 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
796 #endif
797 #endif
798#endif
799
800#ifndef ECB_MEMORY_FENCE
801 #if ECB_GCC_VERSION(4,7)
802 /* see comment below (stdatomic.h) about the C11 memory model. */
803 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
804 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
805 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
806 #define ECB_MEMORY_FENCE_RELAXED __atomic_thread_fence (__ATOMIC_RELAXED)
807
808 #elif ECB_CLANG_EXTENSION(c_atomic)
809 /* see comment below (stdatomic.h) about the C11 memory model. */
810 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
811 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
812 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
813 #define ECB_MEMORY_FENCE_RELAXED __c11_atomic_thread_fence (__ATOMIC_RELAXED)
814
815 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
816 #define ECB_MEMORY_FENCE __sync_synchronize ()
817 #elif _MSC_VER >= 1500 /* VC++ 2008 */
818 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
819 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
820 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
821 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
822 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
823 #elif _MSC_VER >= 1400 /* VC++ 2005 */
824 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
825 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
826 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
827 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
828 #elif defined _WIN32
829 #include <WinNT.h>
830 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
831 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
832 #include <mbarrier.h>
833 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
834 #define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier ()
835 #define ECB_MEMORY_FENCE_RELEASE __machine_rel_barrier ()
836 #define ECB_MEMORY_FENCE_RELAXED __compiler_barrier ()
837 #elif __xlC__
838 #define ECB_MEMORY_FENCE __sync ()
839 #endif
840#endif
841
842#ifndef ECB_MEMORY_FENCE
843 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
844 /* we assume that these memory fences work on all variables/all memory accesses, */
845 /* not just C11 atomics and atomic accesses */
846 #include <stdatomic.h>
847 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
848 #define ECB_MEMORY_FENCE_ACQUIRE atomic_thread_fence (memory_order_acquire)
849 #define ECB_MEMORY_FENCE_RELEASE atomic_thread_fence (memory_order_release)
850 #endif
851#endif
852
853#ifndef ECB_MEMORY_FENCE
854 #if !ECB_AVOID_PTHREADS
855 /*
856 * if you get undefined symbol references to pthread_mutex_lock,
857 * or failure to find pthread.h, then you should implement
858 * the ECB_MEMORY_FENCE operations for your cpu/compiler
859 * OR provide pthread.h and link against the posix thread library
860 * of your system.
861 */
862 #include <pthread.h>
863 #define ECB_NEEDS_PTHREADS 1
864 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
865
866 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
867 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
868 #endif
869#endif
870
871#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
872 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
873#endif
874
875#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
876 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
877#endif
878
879#if !defined ECB_MEMORY_FENCE_RELAXED && defined ECB_MEMORY_FENCE
880 #define ECB_MEMORY_FENCE_RELAXED ECB_MEMORY_FENCE /* very heavy-handed */
881#endif
882
883/*****************************************************************************/
884
885#if ECB_CPP
886 #define ecb_inline static inline
887#elif ECB_GCC_VERSION(2,5)
888 #define ecb_inline static __inline__
889#elif ECB_C99
890 #define ecb_inline static inline
891#else
892 #define ecb_inline static
893#endif
894
895#if ECB_GCC_VERSION(3,3)
896 #define ecb_restrict __restrict__
897#elif ECB_C99
898 #define ecb_restrict restrict
899#else
900 #define ecb_restrict
901#endif
902
903typedef int ecb_bool;
904
905#define ECB_CONCAT_(a, b) a ## b
906#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
907#define ECB_STRINGIFY_(a) # a
908#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
909#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
910
911#define ecb_function_ ecb_inline
912
913#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
914 #define ecb_attribute(attrlist) __attribute__ (attrlist)
915#else
916 #define ecb_attribute(attrlist)
917#endif
918
919#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
920 #define ecb_is_constant(expr) __builtin_constant_p (expr)
921#else
922 /* possible C11 impl for integral types
923 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
924 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
925
926 #define ecb_is_constant(expr) 0
927#endif
928
929#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
930 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
931#else
932 #define ecb_expect(expr,value) (expr)
933#endif
934
935#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
936 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
937#else
938 #define ecb_prefetch(addr,rw,locality)
939#endif
940
941/* no emulation for ecb_decltype */
942#if ECB_CPP11
943 // older implementations might have problems with decltype(x)::type, work around it
944 template<class T> struct ecb_decltype_t { typedef T type; };
945 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
946#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
947 #define ecb_decltype(x) __typeof__ (x)
948#endif
949
950#if _MSC_VER >= 1300
951 #define ecb_deprecated __declspec (deprecated)
952#else
953 #define ecb_deprecated ecb_attribute ((__deprecated__))
954#endif
955
956#if _MSC_VER >= 1500
957 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
958#elif ECB_GCC_VERSION(4,5)
959 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
960#else
961 #define ecb_deprecated_message(msg) ecb_deprecated
962#endif
963
964#if _MSC_VER >= 1400
965 #define ecb_noinline __declspec (noinline)
966#else
967 #define ecb_noinline ecb_attribute ((__noinline__))
968#endif
969
970#define ecb_unused ecb_attribute ((__unused__))
971#define ecb_const ecb_attribute ((__const__))
972#define ecb_pure ecb_attribute ((__pure__))
973
974#if ECB_C11 || __IBMC_NORETURN
975 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
976 #define ecb_noreturn _Noreturn
977#elif ECB_CPP11
978 #define ecb_noreturn [[noreturn]]
979#elif _MSC_VER >= 1200
980 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
981 #define ecb_noreturn __declspec (noreturn)
982#else
983 #define ecb_noreturn ecb_attribute ((__noreturn__))
984#endif
985
986#if ECB_GCC_VERSION(4,3)
987 #define ecb_artificial ecb_attribute ((__artificial__))
988 #define ecb_hot ecb_attribute ((__hot__))
989 #define ecb_cold ecb_attribute ((__cold__))
990#else
991 #define ecb_artificial
992 #define ecb_hot
993 #define ecb_cold
994#endif
995
996/* put around conditional expressions if you are very sure that the */
997/* expression is mostly true or mostly false. note that these return */
998/* booleans, not the expression. */
999#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
1000#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
1001/* for compatibility to the rest of the world */
1002#define ecb_likely(expr) ecb_expect_true (expr)
1003#define ecb_unlikely(expr) ecb_expect_false (expr)
1004
1005/* count trailing zero bits and count # of one bits */
1006#if ECB_GCC_VERSION(3,4) \
1007 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
1008 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
1009 && ECB_CLANG_BUILTIN(__builtin_popcount))
1010 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
1011 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
1012 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
1013 #define ecb_ctz32(x) __builtin_ctz (x)
1014 #define ecb_ctz64(x) __builtin_ctzll (x)
1015 #define ecb_popcount32(x) __builtin_popcount (x)
1016 /* no popcountll */
1017#else
1018 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
1019 ecb_function_ ecb_const int
1020 ecb_ctz32 (uint32_t x)
1021 {
1022#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1023 unsigned long r;
1024 _BitScanForward (&r, x);
1025 return (int)r;
1026#else
1027 int r = 0;
1028
1029 x &= ~x + 1; /* this isolates the lowest bit */
1030
1031#if ECB_branchless_on_i386
1032 r += !!(x & 0xaaaaaaaa) << 0;
1033 r += !!(x & 0xcccccccc) << 1;
1034 r += !!(x & 0xf0f0f0f0) << 2;
1035 r += !!(x & 0xff00ff00) << 3;
1036 r += !!(x & 0xffff0000) << 4;
1037#else
1038 if (x & 0xaaaaaaaa) r += 1;
1039 if (x & 0xcccccccc) r += 2;
1040 if (x & 0xf0f0f0f0) r += 4;
1041 if (x & 0xff00ff00) r += 8;
1042 if (x & 0xffff0000) r += 16;
1043#endif
1044
1045 return r;
1046#endif
1047 }
1048
1049 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
1050 ecb_function_ ecb_const int
1051 ecb_ctz64 (uint64_t x)
1052 {
1053#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1054 unsigned long r;
1055 _BitScanForward64 (&r, x);
1056 return (int)r;
1057#else
1058 int shift = x & 0xffffffff ? 0 : 32;
1059 return ecb_ctz32 (x >> shift) + shift;
1060#endif
1061 }
1062
1063 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
1064 ecb_function_ ecb_const int
1065 ecb_popcount32 (uint32_t x)
1066 {
1067 x -= (x >> 1) & 0x55555555;
1068 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
1069 x = ((x >> 4) + x) & 0x0f0f0f0f;
1070 x *= 0x01010101;
1071
1072 return x >> 24;
1073 }
1074
1075 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
1076 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
1077 {
1078#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1079 unsigned long r;
1080 _BitScanReverse (&r, x);
1081 return (int)r;
1082#else
1083 int r = 0;
1084
1085 if (x >> 16) { x >>= 16; r += 16; }
1086 if (x >> 8) { x >>= 8; r += 8; }
1087 if (x >> 4) { x >>= 4; r += 4; }
1088 if (x >> 2) { x >>= 2; r += 2; }
1089 if (x >> 1) { r += 1; }
1090
1091 return r;
1092#endif
1093 }
1094
1095 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
1096 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
1097 {
1098#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1099 unsigned long r;
1100 _BitScanReverse64 (&r, x);
1101 return (int)r;
1102#else
1103 int r = 0;
1104
1105 if (x >> 32) { x >>= 32; r += 32; }
1106
1107 return r + ecb_ld32 (x);
1108#endif
1109 }
1110#endif
1111
1112ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
1113ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
1114ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
1115ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
1116
1117ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
1118ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
1119{
1120 return ( (x * 0x0802U & 0x22110U)
1121 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
1122}
1123
1124ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
1125ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
1126{
1127 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
1128 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
1129 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
1130 x = ( x >> 8 ) | ( x << 8);
1131
1132 return x;
1133}
1134
1135ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
1136ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
1137{
1138 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
1139 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
1140 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
1141 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
1142 x = ( x >> 16 ) | ( x << 16);
1143
1144 return x;
1145}
1146
1147/* popcount64 is only available on 64 bit cpus as gcc builtin */
1148/* so for this version we are lazy */
1149ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
1150ecb_function_ ecb_const int
1151ecb_popcount64 (uint64_t x)
1152{
1153 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
1154}
1155
1156ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
1157ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
1158ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
1159ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
1160ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
1161ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
1162ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
1163ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
1164
1165ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
1166ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
1167ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
1168ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
1169ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
1170ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
1171ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
1172ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
1173
1174#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1175 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1176 #define ecb_bswap16(x) __builtin_bswap16 (x)
1177 #else
1178 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1179 #endif
1180 #define ecb_bswap32(x) __builtin_bswap32 (x)
1181 #define ecb_bswap64(x) __builtin_bswap64 (x)
1182#elif _MSC_VER
1183 #include <stdlib.h>
1184 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1185 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1186 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
1187#else
1188 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
1189 ecb_function_ ecb_const uint16_t
1190 ecb_bswap16 (uint16_t x)
1191 {
1192 return ecb_rotl16 (x, 8);
1193 }
1194
1195 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
1196 ecb_function_ ecb_const uint32_t
1197 ecb_bswap32 (uint32_t x)
1198 {
1199 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
1200 }
1201
1202 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
1203 ecb_function_ ecb_const uint64_t
1204 ecb_bswap64 (uint64_t x)
1205 {
1206 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
1207 }
1208#endif
1209
1210#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
1211 #define ecb_unreachable() __builtin_unreachable ()
1212#else
1213 /* this seems to work fine, but gcc always emits a warning for it :/ */
1214 ecb_inline ecb_noreturn void ecb_unreachable (void);
1215 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
1216#endif
1217
1218/* try to tell the compiler that some condition is definitely true */
1219#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
1220
1221ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
1222ecb_inline ecb_const uint32_t
1223ecb_byteorder_helper (void)
1224{
1225 /* the union code still generates code under pressure in gcc, */
1226 /* but less than using pointers, and always seems to */
1227 /* successfully return a constant. */
1228 /* the reason why we have this horrible preprocessor mess */
1229 /* is to avoid it in all cases, at least on common architectures */
1230 /* or when using a recent enough gcc version (>= 4.6) */
1231#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1232 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1233 #define ECB_LITTLE_ENDIAN 1
1234 return 0x44332211;
1235#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1236 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1237 #define ECB_BIG_ENDIAN 1
1238 return 0x11223344;
1239#else
1240 union
1241 {
1242 uint8_t c[4];
1243 uint32_t u;
1244 } u = { 0x11, 0x22, 0x33, 0x44 };
1245 return u.u;
1246#endif
1247}
1248
1249ecb_inline ecb_const ecb_bool ecb_big_endian (void);
1250ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
1251ecb_inline ecb_const ecb_bool ecb_little_endian (void);
1252ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
1253
1254#if ECB_GCC_VERSION(3,0) || ECB_C99
1255 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1256#else
1257 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1258#endif
1259
1260#if ECB_CPP
1261 template<typename T>
1262 static inline T ecb_div_rd (T val, T div)
1263 {
1264 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1265 }
1266 template<typename T>
1267 static inline T ecb_div_ru (T val, T div)
1268 {
1269 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1270 }
1271#else
1272 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1273 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1274#endif
1275
1276#if ecb_cplusplus_does_not_suck
1277 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1278 template<typename T, int N>
1279 static inline int ecb_array_length (const T (&arr)[N])
1280 {
1281 return N;
1282 }
1283#else
1284 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1285#endif
1286
1287ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1288ecb_function_ ecb_const uint32_t
1289ecb_binary16_to_binary32 (uint32_t x)
1290{
1291 unsigned int s = (x & 0x8000) << (31 - 15);
1292 int e = (x >> 10) & 0x001f;
1293 unsigned int m = x & 0x03ff;
1294
1295 if (ecb_expect_false (e == 31))
1296 /* infinity or NaN */
1297 e = 255 - (127 - 15);
1298 else if (ecb_expect_false (!e))
1299 {
1300 if (ecb_expect_true (!m))
1301 /* zero, handled by code below by forcing e to 0 */
1302 e = 0 - (127 - 15);
1303 else
1304 {
1305 /* subnormal, renormalise */
1306 unsigned int s = 10 - ecb_ld32 (m);
1307
1308 m = (m << s) & 0x3ff; /* mask implicit bit */
1309 e -= s - 1;
1310 }
1311 }
1312
1313 /* e and m now are normalised, or zero, (or inf or nan) */
1314 e += 127 - 15;
1315
1316 return s | (e << 23) | (m << (23 - 10));
1317}
1318
1319ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1320ecb_function_ ecb_const uint16_t
1321ecb_binary32_to_binary16 (uint32_t x)
1322{
1323 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1324 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1325 unsigned int m = x & 0x007fffff;
1326
1327 x &= 0x7fffffff;
1328
1329 /* if it's within range of binary16 normals, use fast path */
1330 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1331 {
1332 /* mantissa round-to-even */
1333 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1334
1335 /* handle overflow */
1336 if (ecb_expect_false (m >= 0x00800000))
1337 {
1338 m >>= 1;
1339 e += 1;
1340 }
1341
1342 return s | (e << 10) | (m >> (23 - 10));
1343 }
1344
1345 /* handle large numbers and infinity */
1346 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1347 return s | 0x7c00;
1348
1349 /* handle zero, subnormals and small numbers */
1350 if (ecb_expect_true (x < 0x38800000))
1351 {
1352 /* zero */
1353 if (ecb_expect_true (!x))
1354 return s;
1355
1356 /* handle subnormals */
1357
1358 /* too small, will be zero */
1359 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1360 return s;
1361
1362 m |= 0x00800000; /* make implicit bit explicit */
1363
1364 /* very tricky - we need to round to the nearest e (+10) bit value */
1365 {
1366 unsigned int bits = 14 - e;
1367 unsigned int half = (1 << (bits - 1)) - 1;
1368 unsigned int even = (m >> bits) & 1;
1369
1370 /* if this overflows, we will end up with a normalised number */
1371 m = (m + half + even) >> bits;
1372 }
1373
1374 return s | m;
1375 }
1376
1377 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1378 m >>= 13;
1379
1380 return s | 0x7c00 | m | !m;
1381}
1382
1383/*******************************************************************************/
1384/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1385
1386/* basically, everything uses "ieee pure-endian" floating point numbers */
1387/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1388#if 0 \
1389 || __i386 || __i386__ \
1390 || ECB_GCC_AMD64 \
1391 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1392 || defined __s390__ || defined __s390x__ \
1393 || defined __mips__ \
1394 || defined __alpha__ \
1395 || defined __hppa__ \
1396 || defined __ia64__ \
1397 || defined __m68k__ \
1398 || defined __m88k__ \
1399 || defined __sh__ \
1400 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1401 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1402 || defined __aarch64__
1403 #define ECB_STDFP 1
1404 #include <string.h> /* for memcpy */
1405#else
1406 #define ECB_STDFP 0
1407#endif
1408
1409#ifndef ECB_NO_LIBM
1410
1411 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1412
1413 /* only the oldest of old doesn't have this one. solaris. */
1414 #ifdef INFINITY
1415 #define ECB_INFINITY INFINITY
1416 #else
1417 #define ECB_INFINITY HUGE_VAL
1418 #endif
1419
1420 #ifdef NAN
1421 #define ECB_NAN NAN
1422 #else
1423 #define ECB_NAN ECB_INFINITY
1424 #endif
1425
1426 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1427 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1428 #define ecb_frexpf(x,e) frexpf ((x), (e))
1429 #else
1430 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1431 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1432 #endif
1433
1434 /* convert a float to ieee single/binary32 */
1435 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1436 ecb_function_ ecb_const uint32_t
1437 ecb_float_to_binary32 (float x)
1438 {
1439 uint32_t r;
1440
1441 #if ECB_STDFP
1442 memcpy (&r, &x, 4);
1443 #else
1444 /* slow emulation, works for anything but -0 */
1445 uint32_t m;
1446 int e;
1447
1448 if (x == 0e0f ) return 0x00000000U;
1449 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1450 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1451 if (x != x ) return 0x7fbfffffU;
1452
1453 m = ecb_frexpf (x, &e) * 0x1000000U;
1454
1455 r = m & 0x80000000U;
1456
1457 if (r)
1458 m = -m;
1459
1460 if (e <= -126)
1461 {
1462 m &= 0xffffffU;
1463 m >>= (-125 - e);
1464 e = -126;
1465 }
1466
1467 r |= (e + 126) << 23;
1468 r |= m & 0x7fffffU;
1469 #endif
1470
1471 return r;
1472 }
1473
1474 /* converts an ieee single/binary32 to a float */
1475 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1476 ecb_function_ ecb_const float
1477 ecb_binary32_to_float (uint32_t x)
1478 {
1479 float r;
1480
1481 #if ECB_STDFP
1482 memcpy (&r, &x, 4);
1483 #else
1484 /* emulation, only works for normals and subnormals and +0 */
1485 int neg = x >> 31;
1486 int e = (x >> 23) & 0xffU;
1487
1488 x &= 0x7fffffU;
1489
1490 if (e)
1491 x |= 0x800000U;
1492 else
1493 e = 1;
1494
1495 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1496 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1497
1498 r = neg ? -r : r;
1499 #endif
1500
1501 return r;
1502 }
1503
1504 /* convert a double to ieee double/binary64 */
1505 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1506 ecb_function_ ecb_const uint64_t
1507 ecb_double_to_binary64 (double x)
1508 {
1509 uint64_t r;
1510
1511 #if ECB_STDFP
1512 memcpy (&r, &x, 8);
1513 #else
1514 /* slow emulation, works for anything but -0 */
1515 uint64_t m;
1516 int e;
1517
1518 if (x == 0e0 ) return 0x0000000000000000U;
1519 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1520 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1521 if (x != x ) return 0X7ff7ffffffffffffU;
1522
1523 m = frexp (x, &e) * 0x20000000000000U;
1524
1525 r = m & 0x8000000000000000;;
1526
1527 if (r)
1528 m = -m;
1529
1530 if (e <= -1022)
1531 {
1532 m &= 0x1fffffffffffffU;
1533 m >>= (-1021 - e);
1534 e = -1022;
1535 }
1536
1537 r |= ((uint64_t)(e + 1022)) << 52;
1538 r |= m & 0xfffffffffffffU;
1539 #endif
1540
1541 return r;
1542 }
1543
1544 /* converts an ieee double/binary64 to a double */
1545 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1546 ecb_function_ ecb_const double
1547 ecb_binary64_to_double (uint64_t x)
1548 {
1549 double r;
1550
1551 #if ECB_STDFP
1552 memcpy (&r, &x, 8);
1553 #else
1554 /* emulation, only works for normals and subnormals and +0 */
1555 int neg = x >> 63;
1556 int e = (x >> 52) & 0x7ffU;
1557
1558 x &= 0xfffffffffffffU;
1559
1560 if (e)
1561 x |= 0x10000000000000U;
1562 else
1563 e = 1;
1564
1565 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1566 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1567
1568 r = neg ? -r : r;
1569 #endif
1570
1571 return r;
1572 }
1573
1574 /* convert a float to ieee half/binary16 */
1575 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1576 ecb_function_ ecb_const uint16_t
1577 ecb_float_to_binary16 (float x)
1578 {
1579 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1580 }
1581
1582 /* convert an ieee half/binary16 to float */
1583 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1584 ecb_function_ ecb_const float
1585 ecb_binary16_to_float (uint16_t x)
1586 {
1587 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1588 }
1589
1590#endif
1591
1592#endif
1593
1594/* ECB.H END */
1595
1596#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1597/* if your architecture doesn't need memory fences, e.g. because it is
1598 * single-cpu/core, or if you use libev in a project that doesn't use libev
1599 * from multiple threads, then you can define ECB_NO_THREADS when compiling
1600 * libev, in which cases the memory fences become nops.
1601 * alternatively, you can remove this #error and link against libpthread,
1602 * which will then provide the memory fences.
1603 */
1604# error "memory fences not defined for your architecture, please report"
1605#endif
1606
1607#ifndef ECB_MEMORY_FENCE
1608# define ECB_MEMORY_FENCE do { } while (0)
1609# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1610# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1611#endif
1612
1613#define inline_size ecb_inline
1614
1615#if EV_FEATURE_CODE
483# define inline_speed static inline 1616# define inline_speed ecb_inline
1617#else
1618# define inline_speed ecb_noinline static
484#endif 1619#endif
1620
1621/*****************************************************************************/
1622/* raw syscall wrappers */
1623
1624#if EV_NEED_SYSCALL
1625
1626#include <sys/syscall.h>
1627
1628/*
1629 * define some syscall wrappers for common architectures
1630 * this is mostly for nice looks during debugging, not performance.
1631 * our syscalls return < 0, not == -1, on error. which is good
1632 * enough for linux aio.
1633 * TODO: arm is also common nowadays, maybe even mips and x86
1634 * TODO: after implementing this, it suddenly looks like overkill, but its hard to remove...
1635 */
1636#if __GNUC__ && __linux && ECB_AMD64 && !defined __OPTIMIZE_SIZE__
1637 /* the costly errno access probably kills this for size optimisation */
1638
1639 #define ev_syscall(nr,narg,arg1,arg2,arg3,arg4,arg5,arg6) \
1640 ({ \
1641 long res; \
1642 register unsigned long r6 __asm__ ("r9" ); \
1643 register unsigned long r5 __asm__ ("r8" ); \
1644 register unsigned long r4 __asm__ ("r10"); \
1645 register unsigned long r3 __asm__ ("rdx"); \
1646 register unsigned long r2 __asm__ ("rsi"); \
1647 register unsigned long r1 __asm__ ("rdi"); \
1648 if (narg >= 6) r6 = (unsigned long)(arg6); \
1649 if (narg >= 5) r5 = (unsigned long)(arg5); \
1650 if (narg >= 4) r4 = (unsigned long)(arg4); \
1651 if (narg >= 3) r3 = (unsigned long)(arg3); \
1652 if (narg >= 2) r2 = (unsigned long)(arg2); \
1653 if (narg >= 1) r1 = (unsigned long)(arg1); \
1654 __asm__ __volatile__ ( \
1655 "syscall\n\t" \
1656 : "=a" (res) \
1657 : "0" (nr), "r" (r1), "r" (r2), "r" (r3), "r" (r4), "r" (r5) \
1658 : "cc", "r11", "cx", "memory"); \
1659 errno = -res; \
1660 res; \
1661 })
1662
1663#endif
1664
1665#ifdef ev_syscall
1666 #define ev_syscall0(nr) ev_syscall (nr, 0, 0, 0, 0, 0, 0, 0)
1667 #define ev_syscall1(nr,arg1) ev_syscall (nr, 1, arg1, 0, 0, 0, 0, 0)
1668 #define ev_syscall2(nr,arg1,arg2) ev_syscall (nr, 2, arg1, arg2, 0, 0, 0, 0)
1669 #define ev_syscall3(nr,arg1,arg2,arg3) ev_syscall (nr, 3, arg1, arg2, arg3, 0, 0, 0)
1670 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) ev_syscall (nr, 3, arg1, arg2, arg3, arg4, 0, 0)
1671 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) ev_syscall (nr, 5, arg1, arg2, arg3, arg4, arg5, 0)
1672 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) ev_syscall (nr, 6, arg1, arg2, arg3, arg4, arg5,arg6)
1673#else
1674 #define ev_syscall0(nr) syscall (nr)
1675 #define ev_syscall1(nr,arg1) syscall (nr, arg1)
1676 #define ev_syscall2(nr,arg1,arg2) syscall (nr, arg1, arg2)
1677 #define ev_syscall3(nr,arg1,arg2,arg3) syscall (nr, arg1, arg2, arg3)
1678 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) syscall (nr, arg1, arg2, arg3, arg4)
1679 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) syscall (nr, arg1, arg2, arg3, arg4, arg5)
1680 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) syscall (nr, arg1, arg2, arg3, arg4, arg5,arg6)
1681#endif
1682
1683#endif
1684
1685/*****************************************************************************/
485 1686
486#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1687#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
487 1688
488#if EV_MINPRI == EV_MAXPRI 1689#if EV_MINPRI == EV_MAXPRI
489# define ABSPRI(w) (((W)w), 0) 1690# define ABSPRI(w) (((W)w), 0)
490#else 1691#else
491# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1692# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
492#endif 1693#endif
493 1694
494#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1695#define EMPTY /* required for microsofts broken pseudo-c compiler */
495#define EMPTY2(a,b) /* used to suppress some warnings */
496 1696
497typedef ev_watcher *W; 1697typedef ev_watcher *W;
498typedef ev_watcher_list *WL; 1698typedef ev_watcher_list *WL;
499typedef ev_watcher_time *WT; 1699typedef ev_watcher_time *WT;
500 1700
501#define ev_active(w) ((W)(w))->active 1701#define ev_active(w) ((W)(w))->active
502#define ev_at(w) ((WT)(w))->at 1702#define ev_at(w) ((WT)(w))->at
503 1703
504#if EV_USE_REALTIME 1704#if EV_USE_REALTIME
505/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 1705/* 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 */ 1706/* giving it a reasonably high chance of working on typical architectures */
507static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 1707static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
508#endif 1708#endif
509 1709
510#if EV_USE_MONOTONIC 1710#if EV_USE_MONOTONIC
511static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 1711static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
… …
525# include "ev_win32.c" 1725# include "ev_win32.c"
526#endif 1726#endif
527 1727
528/*****************************************************************************/ 1728/*****************************************************************************/
529 1729
1730#if EV_USE_LINUXAIO
1731# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
1732#endif
1733
1734/* define a suitable floor function (only used by periodics atm) */
1735
1736#if EV_USE_FLOOR
1737# include <math.h>
1738# define ev_floor(v) floor (v)
1739#else
1740
1741#include <float.h>
1742
1743/* a floor() replacement function, should be independent of ev_tstamp type */
1744ecb_noinline
1745static ev_tstamp
1746ev_floor (ev_tstamp v)
1747{
1748 /* the choice of shift factor is not terribly important */
1749#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1750 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1751#else
1752 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1753#endif
1754
1755 /* special treatment for negative arguments */
1756 if (ecb_expect_false (v < 0.))
1757 {
1758 ev_tstamp f = -ev_floor (-v);
1759
1760 return f - (f == v ? 0 : 1);
1761 }
1762
1763 /* argument too large for an unsigned long? then reduce it */
1764 if (ecb_expect_false (v >= shift))
1765 {
1766 ev_tstamp f;
1767
1768 if (v == v - 1.)
1769 return v; /* very large numbers are assumed to be integer */
1770
1771 f = shift * ev_floor (v * (1. / shift));
1772 return f + ev_floor (v - f);
1773 }
1774
1775 /* fits into an unsigned long */
1776 return (unsigned long)v;
1777}
1778
1779#endif
1780
1781/*****************************************************************************/
1782
1783#ifdef __linux
1784# include <sys/utsname.h>
1785#endif
1786
1787ecb_noinline ecb_cold
1788static unsigned int
1789ev_linux_version (void)
1790{
1791#ifdef __linux
1792 unsigned int v = 0;
1793 struct utsname buf;
1794 int i;
1795 char *p = buf.release;
1796
1797 if (uname (&buf))
1798 return 0;
1799
1800 for (i = 3+1; --i; )
1801 {
1802 unsigned int c = 0;
1803
1804 for (;;)
1805 {
1806 if (*p >= '0' && *p <= '9')
1807 c = c * 10 + *p++ - '0';
1808 else
1809 {
1810 p += *p == '.';
1811 break;
1812 }
1813 }
1814
1815 v = (v << 8) | c;
1816 }
1817
1818 return v;
1819#else
1820 return 0;
1821#endif
1822}
1823
1824/*****************************************************************************/
1825
530#if EV_AVOID_STDIO 1826#if EV_AVOID_STDIO
531static void noinline 1827ecb_noinline ecb_cold
1828static void
532ev_printerr (const char *msg) 1829ev_printerr (const char *msg)
533{ 1830{
534 write (STDERR_FILENO, msg, strlen (msg)); 1831 write (STDERR_FILENO, msg, strlen (msg));
535} 1832}
536#endif 1833#endif
537 1834
538static void (*syserr_cb)(const char *msg); 1835static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
539 1836
1837ecb_cold
540void 1838void
541ev_set_syserr_cb (void (*cb)(const char *msg)) 1839ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
542{ 1840{
543 syserr_cb = cb; 1841 syserr_cb = cb;
544} 1842}
545 1843
546static void noinline 1844ecb_noinline ecb_cold
1845static void
547ev_syserr (const char *msg) 1846ev_syserr (const char *msg)
548{ 1847{
549 if (!msg) 1848 if (!msg)
550 msg = "(libev) system error"; 1849 msg = "(libev) system error";
551 1850
552 if (syserr_cb) 1851 if (syserr_cb)
553 syserr_cb (msg); 1852 syserr_cb (msg);
554 else 1853 else
555 { 1854 {
556#if EV_AVOID_STDIO 1855#if EV_AVOID_STDIO
557 const char *err = strerror (errno);
558
559 ev_printerr (msg); 1856 ev_printerr (msg);
560 ev_printerr (": "); 1857 ev_printerr (": ");
561 ev_printerr (err); 1858 ev_printerr (strerror (errno));
562 ev_printerr ("\n"); 1859 ev_printerr ("\n");
563#else 1860#else
564 perror (msg); 1861 perror (msg);
565#endif 1862#endif
566 abort (); 1863 abort ();
567 } 1864 }
568} 1865}
569 1866
570static void * 1867static void *
571ev_realloc_emul (void *ptr, long size) 1868ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
572{ 1869{
573 /* some systems, notably openbsd and darwin, fail to properly 1870 /* some systems, notably openbsd and darwin, fail to properly
574 * implement realloc (x, 0) (as required by both ansi c-98 and 1871 * implement realloc (x, 0) (as required by both ansi c-89 and
575 * the single unix specification, so work around them here. 1872 * the single unix specification, so work around them here.
1873 * recently, also (at least) fedora and debian started breaking it,
1874 * despite documenting it otherwise.
576 */ 1875 */
1876
577 if (size) 1877 if (size)
578 return realloc (ptr, size); 1878 return realloc (ptr, size);
579 1879
580 free (ptr); 1880 free (ptr);
581 return 0; 1881 return 0;
582} 1882}
583 1883
584static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1884static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
585 1885
1886ecb_cold
586void 1887void
587ev_set_allocator (void *(*cb)(void *ptr, long size)) 1888ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
588{ 1889{
589 alloc = cb; 1890 alloc = cb;
590} 1891}
591 1892
592inline_speed void * 1893inline_speed void *
… …
595 ptr = alloc (ptr, size); 1896 ptr = alloc (ptr, size);
596 1897
597 if (!ptr && size) 1898 if (!ptr && size)
598 { 1899 {
599#if EV_AVOID_STDIO 1900#if EV_AVOID_STDIO
600 ev_printerr ("libev: memory allocation failed, aborting.\n"); 1901 ev_printerr ("(libev) memory allocation failed, aborting.\n");
601#else 1902#else
602 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1903 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
603#endif 1904#endif
604 abort (); 1905 abort ();
605 } 1906 }
606 1907
607 return ptr; 1908 return ptr;
… …
619typedef struct 1920typedef struct
620{ 1921{
621 WL head; 1922 WL head;
622 unsigned char events; /* the events watched for */ 1923 unsigned char events; /* the events watched for */
623 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */ 1924 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
624 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1925 unsigned char emask; /* some backends store the actual kernel mask in here */
625 unsigned char unused; 1926 unsigned char eflags; /* flags field for use by backends */
626#if EV_USE_EPOLL 1927#if EV_USE_EPOLL
627 unsigned int egen; /* generation counter to counter epoll bugs */ 1928 unsigned int egen; /* generation counter to counter epoll bugs */
628#endif 1929#endif
629#if EV_SELECT_IS_WINSOCKET 1930#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
630 SOCKET handle; 1931 SOCKET handle;
1932#endif
1933#if EV_USE_IOCP
1934 OVERLAPPED or, ow;
631#endif 1935#endif
632} ANFD; 1936} ANFD;
633 1937
634/* stores the pending event set for a given watcher */ 1938/* stores the pending event set for a given watcher */
635typedef struct 1939typedef struct
… …
677 #undef VAR 1981 #undef VAR
678 }; 1982 };
679 #include "ev_wrap.h" 1983 #include "ev_wrap.h"
680 1984
681 static struct ev_loop default_loop_struct; 1985 static struct ev_loop default_loop_struct;
682 struct ev_loop *ev_default_loop_ptr; 1986 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
683 1987
684#else 1988#else
685 1989
686 ev_tstamp ev_rt_now; 1990 EV_API_DECL ev_tstamp ev_rt_now = EV_TS_CONST (0.); /* needs to be initialised to make it a definition despite extern */
687 #define VAR(name,decl) static decl; 1991 #define VAR(name,decl) static decl;
688 #include "ev_vars.h" 1992 #include "ev_vars.h"
689 #undef VAR 1993 #undef VAR
690 1994
691 static int ev_default_loop_ptr; 1995 static int ev_default_loop_ptr;
692 1996
693#endif 1997#endif
694 1998
695#if EV_MINIMAL < 2 1999#if EV_FEATURE_API
696# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 2000# define EV_RELEASE_CB if (ecb_expect_false (release_cb)) release_cb (EV_A)
697# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 2001# define EV_ACQUIRE_CB if (ecb_expect_false (acquire_cb)) acquire_cb (EV_A)
698# define EV_INVOKE_PENDING invoke_cb (EV_A) 2002# define EV_INVOKE_PENDING invoke_cb (EV_A)
699#else 2003#else
700# define EV_RELEASE_CB (void)0 2004# define EV_RELEASE_CB (void)0
701# define EV_ACQUIRE_CB (void)0 2005# define EV_ACQUIRE_CB (void)0
702# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 2006# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
703#endif 2007#endif
704 2008
705#define EVUNLOOP_RECURSE 0x80 2009#define EVBREAK_RECURSE 0x80
706 2010
707/*****************************************************************************/ 2011/*****************************************************************************/
708 2012
709#ifndef EV_HAVE_EV_TIME 2013#ifndef EV_HAVE_EV_TIME
710ev_tstamp 2014ev_tstamp
711ev_time (void) 2015ev_time (void) EV_NOEXCEPT
712{ 2016{
713#if EV_USE_REALTIME 2017#if EV_USE_REALTIME
714 if (expect_true (have_realtime)) 2018 if (ecb_expect_true (have_realtime))
715 { 2019 {
716 struct timespec ts; 2020 struct timespec ts;
717 clock_gettime (CLOCK_REALTIME, &ts); 2021 clock_gettime (CLOCK_REALTIME, &ts);
718 return ts.tv_sec + ts.tv_nsec * 1e-9; 2022 return EV_TS_GET (ts);
719 } 2023 }
720#endif 2024#endif
721 2025
2026 {
722 struct timeval tv; 2027 struct timeval tv;
723 gettimeofday (&tv, 0); 2028 gettimeofday (&tv, 0);
724 return tv.tv_sec + tv.tv_usec * 1e-6; 2029 return EV_TV_GET (tv);
2030 }
725} 2031}
726#endif 2032#endif
727 2033
728inline_size ev_tstamp 2034inline_size ev_tstamp
729get_clock (void) 2035get_clock (void)
730{ 2036{
731#if EV_USE_MONOTONIC 2037#if EV_USE_MONOTONIC
732 if (expect_true (have_monotonic)) 2038 if (ecb_expect_true (have_monotonic))
733 { 2039 {
734 struct timespec ts; 2040 struct timespec ts;
735 clock_gettime (CLOCK_MONOTONIC, &ts); 2041 clock_gettime (CLOCK_MONOTONIC, &ts);
736 return ts.tv_sec + ts.tv_nsec * 1e-9; 2042 return EV_TS_GET (ts);
737 } 2043 }
738#endif 2044#endif
739 2045
740 return ev_time (); 2046 return ev_time ();
741} 2047}
742 2048
743#if EV_MULTIPLICITY 2049#if EV_MULTIPLICITY
744ev_tstamp 2050ev_tstamp
745ev_now (EV_P) 2051ev_now (EV_P) EV_NOEXCEPT
746{ 2052{
747 return ev_rt_now; 2053 return ev_rt_now;
748} 2054}
749#endif 2055#endif
750 2056
751void 2057void
752ev_sleep (ev_tstamp delay) 2058ev_sleep (ev_tstamp delay) EV_NOEXCEPT
753{ 2059{
754 if (delay > 0.) 2060 if (delay > EV_TS_CONST (0.))
755 { 2061 {
756#if EV_USE_NANOSLEEP 2062#if EV_USE_NANOSLEEP
757 struct timespec ts; 2063 struct timespec ts;
758 2064
759 ts.tv_sec = (time_t)delay; 2065 EV_TS_SET (ts, delay);
760 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
761
762 nanosleep (&ts, 0); 2066 nanosleep (&ts, 0);
763#elif defined(_WIN32) 2067#elif defined _WIN32
2068 /* maybe this should round up, as ms is very low resolution */
2069 /* compared to select (µs) or nanosleep (ns) */
764 Sleep ((unsigned long)(delay * 1e3)); 2070 Sleep ((unsigned long)(EV_TS_TO_MSEC (delay)));
765#else 2071#else
766 struct timeval tv; 2072 struct timeval tv;
767
768 tv.tv_sec = (time_t)delay;
769 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
770 2073
771 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 2074 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
772 /* something not guaranteed by newer posix versions, but guaranteed */ 2075 /* something not guaranteed by newer posix versions, but guaranteed */
773 /* by older ones */ 2076 /* by older ones */
2077 EV_TV_SET (tv, delay);
774 select (0, 0, 0, 0, &tv); 2078 select (0, 0, 0, 0, &tv);
775#endif 2079#endif
776 } 2080 }
777} 2081}
778 2082
779/*****************************************************************************/ 2083/*****************************************************************************/
780 2084
781#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 2085#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
782 2086
783/* find a suitable new size for the given array, */ 2087/* find a suitable new size for the given array, */
784/* hopefully by rounding to a ncie-to-malloc size */ 2088/* hopefully by rounding to a nice-to-malloc size */
785inline_size int 2089inline_size int
786array_nextsize (int elem, int cur, int cnt) 2090array_nextsize (int elem, int cur, int cnt)
787{ 2091{
788 int ncur = cur + 1; 2092 int ncur = cur + 1;
789 2093
790 do 2094 do
791 ncur <<= 1; 2095 ncur <<= 1;
792 while (cnt > ncur); 2096 while (cnt > ncur);
793 2097
794 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 2098 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
795 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 2099 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
796 { 2100 {
797 ncur *= elem; 2101 ncur *= elem;
798 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 2102 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
799 ncur = ncur - sizeof (void *) * 4; 2103 ncur = ncur - sizeof (void *) * 4;
… …
801 } 2105 }
802 2106
803 return ncur; 2107 return ncur;
804} 2108}
805 2109
806static noinline void * 2110ecb_noinline ecb_cold
2111static void *
807array_realloc (int elem, void *base, int *cur, int cnt) 2112array_realloc (int elem, void *base, int *cur, int cnt)
808{ 2113{
809 *cur = array_nextsize (elem, *cur, cnt); 2114 *cur = array_nextsize (elem, *cur, cnt);
810 return ev_realloc (base, elem * *cur); 2115 return ev_realloc (base, elem * *cur);
811} 2116}
812 2117
2118#define array_needsize_noinit(base,offset,count)
2119
813#define array_init_zero(base,count) \ 2120#define array_needsize_zerofill(base,offset,count) \
814 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 2121 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
815 2122
816#define array_needsize(type,base,cur,cnt,init) \ 2123#define array_needsize(type,base,cur,cnt,init) \
817 if (expect_false ((cnt) > (cur))) \ 2124 if (ecb_expect_false ((cnt) > (cur))) \
818 { \ 2125 { \
819 int ocur_ = (cur); \ 2126 ecb_unused int ocur_ = (cur); \
820 (base) = (type *)array_realloc \ 2127 (base) = (type *)array_realloc \
821 (sizeof (type), (base), &(cur), (cnt)); \ 2128 (sizeof (type), (base), &(cur), (cnt)); \
822 init ((base) + (ocur_), (cur) - ocur_); \ 2129 init ((base), ocur_, ((cur) - ocur_)); \
823 } 2130 }
824 2131
825#if 0 2132#if 0
826#define array_slim(type,stem) \ 2133#define array_slim(type,stem) \
827 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2134 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
… …
836 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 2143 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
837 2144
838/*****************************************************************************/ 2145/*****************************************************************************/
839 2146
840/* dummy callback for pending events */ 2147/* dummy callback for pending events */
841static void noinline 2148ecb_noinline
2149static void
842pendingcb (EV_P_ ev_prepare *w, int revents) 2150pendingcb (EV_P_ ev_prepare *w, int revents)
843{ 2151{
844} 2152}
845 2153
846void noinline 2154ecb_noinline
2155void
847ev_feed_event (EV_P_ void *w, int revents) 2156ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
848{ 2157{
849 W w_ = (W)w; 2158 W w_ = (W)w;
850 int pri = ABSPRI (w_); 2159 int pri = ABSPRI (w_);
851 2160
852 if (expect_false (w_->pending)) 2161 if (ecb_expect_false (w_->pending))
853 pendings [pri][w_->pending - 1].events |= revents; 2162 pendings [pri][w_->pending - 1].events |= revents;
854 else 2163 else
855 { 2164 {
856 w_->pending = ++pendingcnt [pri]; 2165 w_->pending = ++pendingcnt [pri];
857 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2166 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
858 pendings [pri][w_->pending - 1].w = w_; 2167 pendings [pri][w_->pending - 1].w = w_;
859 pendings [pri][w_->pending - 1].events = revents; 2168 pendings [pri][w_->pending - 1].events = revents;
860 } 2169 }
2170
2171 pendingpri = NUMPRI - 1;
861} 2172}
862 2173
863inline_speed void 2174inline_speed void
864feed_reverse (EV_P_ W w) 2175feed_reverse (EV_P_ W w)
865{ 2176{
866 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2177 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
867 rfeeds [rfeedcnt++] = w; 2178 rfeeds [rfeedcnt++] = w;
868} 2179}
869 2180
870inline_size void 2181inline_size void
871feed_reverse_done (EV_P_ int revents) 2182feed_reverse_done (EV_P_ int revents)
… …
885} 2196}
886 2197
887/*****************************************************************************/ 2198/*****************************************************************************/
888 2199
889inline_speed void 2200inline_speed void
890fd_event_nc (EV_P_ int fd, int revents) 2201fd_event_nocheck (EV_P_ int fd, int revents)
891{ 2202{
892 ANFD *anfd = anfds + fd; 2203 ANFD *anfd = anfds + fd;
893 ev_io *w; 2204 ev_io *w;
894 2205
895 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2206 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
906inline_speed void 2217inline_speed void
907fd_event (EV_P_ int fd, int revents) 2218fd_event (EV_P_ int fd, int revents)
908{ 2219{
909 ANFD *anfd = anfds + fd; 2220 ANFD *anfd = anfds + fd;
910 2221
911 if (expect_true (!anfd->reify)) 2222 if (ecb_expect_true (!anfd->reify))
912 fd_event_nc (EV_A_ fd, revents); 2223 fd_event_nocheck (EV_A_ fd, revents);
913} 2224}
914 2225
915void 2226void
916ev_feed_fd_event (EV_P_ int fd, int revents) 2227ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
917{ 2228{
918 if (fd >= 0 && fd < anfdmax) 2229 if (fd >= 0 && fd < anfdmax)
919 fd_event_nc (EV_A_ fd, revents); 2230 fd_event_nocheck (EV_A_ fd, revents);
920} 2231}
921 2232
922/* make sure the external fd watch events are in-sync */ 2233/* make sure the external fd watch events are in-sync */
923/* with the kernel/libev internal state */ 2234/* with the kernel/libev internal state */
924inline_size void 2235inline_size void
925fd_reify (EV_P) 2236fd_reify (EV_P)
926{ 2237{
927 int i; 2238 int i;
928 2239
2240#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
2241 for (i = 0; i < fdchangecnt; ++i)
2242 {
2243 int fd = fdchanges [i];
2244 ANFD *anfd = anfds + fd;
2245
2246 if (anfd->reify & EV__IOFDSET && anfd->head)
2247 {
2248 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
2249
2250 if (handle != anfd->handle)
2251 {
2252 unsigned long arg;
2253
2254 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
2255
2256 /* handle changed, but fd didn't - we need to do it in two steps */
2257 backend_modify (EV_A_ fd, anfd->events, 0);
2258 anfd->events = 0;
2259 anfd->handle = handle;
2260 }
2261 }
2262 }
2263#endif
2264
929 for (i = 0; i < fdchangecnt; ++i) 2265 for (i = 0; i < fdchangecnt; ++i)
930 { 2266 {
931 int fd = fdchanges [i]; 2267 int fd = fdchanges [i];
932 ANFD *anfd = anfds + fd; 2268 ANFD *anfd = anfds + fd;
933 ev_io *w; 2269 ev_io *w;
934 2270
935 unsigned char events = 0; 2271 unsigned char o_events = anfd->events;
2272 unsigned char o_reify = anfd->reify;
936 2273
937 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2274 anfd->reify = 0;
938 events |= (unsigned char)w->events;
939 2275
940#if EV_SELECT_IS_WINSOCKET 2276 /*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
941 if (events)
942 { 2277 {
943 unsigned long arg; 2278 anfd->events = 0;
944 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 2279
945 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 2280 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
2281 anfd->events |= (unsigned char)w->events;
2282
2283 if (o_events != anfd->events)
2284 o_reify = EV__IOFDSET; /* actually |= */
946 } 2285 }
947#endif
948 2286
949 { 2287 if (o_reify & EV__IOFDSET)
950 unsigned char o_events = anfd->events;
951 unsigned char o_reify = anfd->reify;
952
953 anfd->reify = 0;
954 anfd->events = events;
955
956 if (o_events != events || o_reify & EV__IOFDSET)
957 backend_modify (EV_A_ fd, o_events, events); 2288 backend_modify (EV_A_ fd, o_events, anfd->events);
958 }
959 } 2289 }
960 2290
961 fdchangecnt = 0; 2291 fdchangecnt = 0;
962} 2292}
963 2293
964/* something about the given fd changed */ 2294/* something about the given fd changed */
965inline_size void 2295inline_size
2296void
966fd_change (EV_P_ int fd, int flags) 2297fd_change (EV_P_ int fd, int flags)
967{ 2298{
968 unsigned char reify = anfds [fd].reify; 2299 unsigned char reify = anfds [fd].reify;
969 anfds [fd].reify |= flags; 2300 anfds [fd].reify |= flags;
970 2301
971 if (expect_true (!reify)) 2302 if (ecb_expect_true (!reify))
972 { 2303 {
973 ++fdchangecnt; 2304 ++fdchangecnt;
974 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2305 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
975 fdchanges [fdchangecnt - 1] = fd; 2306 fdchanges [fdchangecnt - 1] = fd;
976 } 2307 }
977} 2308}
978 2309
979/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2310/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
980inline_speed void 2311inline_speed ecb_cold void
981fd_kill (EV_P_ int fd) 2312fd_kill (EV_P_ int fd)
982{ 2313{
983 ev_io *w; 2314 ev_io *w;
984 2315
985 while ((w = (ev_io *)anfds [fd].head)) 2316 while ((w = (ev_io *)anfds [fd].head))
… …
987 ev_io_stop (EV_A_ w); 2318 ev_io_stop (EV_A_ w);
988 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2319 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
989 } 2320 }
990} 2321}
991 2322
992/* check whether the given fd is atcually valid, for error recovery */ 2323/* check whether the given fd is actually valid, for error recovery */
993inline_size int 2324inline_size ecb_cold int
994fd_valid (int fd) 2325fd_valid (int fd)
995{ 2326{
996#ifdef _WIN32 2327#ifdef _WIN32
997 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2328 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
998#else 2329#else
999 return fcntl (fd, F_GETFD) != -1; 2330 return fcntl (fd, F_GETFD) != -1;
1000#endif 2331#endif
1001} 2332}
1002 2333
1003/* called on EBADF to verify fds */ 2334/* called on EBADF to verify fds */
1004static void noinline 2335ecb_noinline ecb_cold
2336static void
1005fd_ebadf (EV_P) 2337fd_ebadf (EV_P)
1006{ 2338{
1007 int fd; 2339 int fd;
1008 2340
1009 for (fd = 0; fd < anfdmax; ++fd) 2341 for (fd = 0; fd < anfdmax; ++fd)
… …
1011 if (!fd_valid (fd) && errno == EBADF) 2343 if (!fd_valid (fd) && errno == EBADF)
1012 fd_kill (EV_A_ fd); 2344 fd_kill (EV_A_ fd);
1013} 2345}
1014 2346
1015/* called on ENOMEM in select/poll to kill some fds and retry */ 2347/* called on ENOMEM in select/poll to kill some fds and retry */
1016static void noinline 2348ecb_noinline ecb_cold
2349static void
1017fd_enomem (EV_P) 2350fd_enomem (EV_P)
1018{ 2351{
1019 int fd; 2352 int fd;
1020 2353
1021 for (fd = anfdmax; fd--; ) 2354 for (fd = anfdmax; fd--; )
… …
1025 break; 2358 break;
1026 } 2359 }
1027} 2360}
1028 2361
1029/* usually called after fork if backend needs to re-arm all fds from scratch */ 2362/* usually called after fork if backend needs to re-arm all fds from scratch */
1030static void noinline 2363ecb_noinline
2364static void
1031fd_rearm_all (EV_P) 2365fd_rearm_all (EV_P)
1032{ 2366{
1033 int fd; 2367 int fd;
1034 2368
1035 for (fd = 0; fd < anfdmax; ++fd) 2369 for (fd = 0; fd < anfdmax; ++fd)
… …
1039 anfds [fd].emask = 0; 2373 anfds [fd].emask = 0;
1040 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); 2374 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
1041 } 2375 }
1042} 2376}
1043 2377
2378/* used to prepare libev internal fd's */
2379/* this is not fork-safe */
2380inline_speed void
2381fd_intern (int fd)
2382{
2383#ifdef _WIN32
2384 unsigned long arg = 1;
2385 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
2386#else
2387 fcntl (fd, F_SETFD, FD_CLOEXEC);
2388 fcntl (fd, F_SETFL, O_NONBLOCK);
2389#endif
2390}
2391
1044/*****************************************************************************/ 2392/*****************************************************************************/
1045 2393
1046/* 2394/*
1047 * the heap functions want a real array index. array index 0 uis guaranteed to not 2395 * the heap functions want a real array index. array index 0 is guaranteed to not
1048 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 2396 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
1049 * the branching factor of the d-tree. 2397 * the branching factor of the d-tree.
1050 */ 2398 */
1051 2399
1052/* 2400/*
… …
1074 ev_tstamp minat; 2422 ev_tstamp minat;
1075 ANHE *minpos; 2423 ANHE *minpos;
1076 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; 2424 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
1077 2425
1078 /* find minimum child */ 2426 /* find minimum child */
1079 if (expect_true (pos + DHEAP - 1 < E)) 2427 if (ecb_expect_true (pos + DHEAP - 1 < E))
1080 { 2428 {
1081 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2429 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1082 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2430 if ( minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1083 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2431 if ( minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1084 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2432 if ( minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1085 } 2433 }
1086 else if (pos < E) 2434 else if (pos < E)
1087 { 2435 {
1088 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2436 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1089 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2437 if (pos + 1 < E && minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1090 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2438 if (pos + 2 < E && minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1091 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2439 if (pos + 3 < E && minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1092 } 2440 }
1093 else 2441 else
1094 break; 2442 break;
1095 2443
1096 if (ANHE_at (he) <= minat) 2444 if (ANHE_at (he) <= minat)
… …
1104 2452
1105 heap [k] = he; 2453 heap [k] = he;
1106 ev_active (ANHE_w (he)) = k; 2454 ev_active (ANHE_w (he)) = k;
1107} 2455}
1108 2456
1109#else /* 4HEAP */ 2457#else /* not 4HEAP */
1110 2458
1111#define HEAP0 1 2459#define HEAP0 1
1112#define HPARENT(k) ((k) >> 1) 2460#define HPARENT(k) ((k) >> 1)
1113#define UPHEAP_DONE(p,k) (!(p)) 2461#define UPHEAP_DONE(p,k) (!(p))
1114 2462
… …
1200 2548
1201static ANSIG signals [EV_NSIG - 1]; 2549static ANSIG signals [EV_NSIG - 1];
1202 2550
1203/*****************************************************************************/ 2551/*****************************************************************************/
1204 2552
1205/* used to prepare libev internal fd's */ 2553#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1206/* this is not fork-safe */ 2554
2555ecb_noinline ecb_cold
2556static void
2557evpipe_init (EV_P)
2558{
2559 if (!ev_is_active (&pipe_w))
2560 {
2561 int fds [2];
2562
2563# if EV_USE_EVENTFD
2564 fds [0] = -1;
2565 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
2566 if (fds [1] < 0 && errno == EINVAL)
2567 fds [1] = eventfd (0, 0);
2568
2569 if (fds [1] < 0)
2570# endif
2571 {
2572 while (pipe (fds))
2573 ev_syserr ("(libev) error creating signal/async pipe");
2574
2575 fd_intern (fds [0]);
2576 }
2577
2578 evpipe [0] = fds [0];
2579
2580 if (evpipe [1] < 0)
2581 evpipe [1] = fds [1]; /* first call, set write fd */
2582 else
2583 {
2584 /* on subsequent calls, do not change evpipe [1] */
2585 /* so that evpipe_write can always rely on its value. */
2586 /* this branch does not do anything sensible on windows, */
2587 /* so must not be executed on windows */
2588
2589 dup2 (fds [1], evpipe [1]);
2590 close (fds [1]);
2591 }
2592
2593 fd_intern (evpipe [1]);
2594
2595 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2596 ev_io_start (EV_A_ &pipe_w);
2597 ev_unref (EV_A); /* watcher should not keep loop alive */
2598 }
2599}
2600
1207inline_speed void 2601inline_speed void
1208fd_intern (int fd) 2602evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1209{ 2603{
1210#ifdef _WIN32 2604 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1211 unsigned long arg = 1;
1212 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1213#else
1214 fcntl (fd, F_SETFD, FD_CLOEXEC);
1215 fcntl (fd, F_SETFL, O_NONBLOCK);
1216#endif
1217}
1218 2605
1219static void noinline 2606 if (ecb_expect_true (*flag))
1220evpipe_init (EV_P) 2607 return;
1221{ 2608
1222 if (!ev_is_active (&pipe_w)) 2609 *flag = 1;
2610 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2611
2612 pipe_write_skipped = 1;
2613
2614 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2615
2616 if (pipe_write_wanted)
1223 { 2617 {
2618 int old_errno;
2619
2620 pipe_write_skipped = 0;
2621 ECB_MEMORY_FENCE_RELEASE;
2622
2623 old_errno = errno; /* save errno because write will clobber it */
2624
1224#if EV_USE_EVENTFD 2625#if EV_USE_EVENTFD
1225 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2626 if (evpipe [0] < 0)
1226 if (evfd < 0 && errno == EINVAL)
1227 evfd = eventfd (0, 0);
1228
1229 if (evfd >= 0)
1230 { 2627 {
1231 evpipe [0] = -1; 2628 uint64_t counter = 1;
1232 fd_intern (evfd); /* doing it twice doesn't hurt */ 2629 write (evpipe [1], &counter, sizeof (uint64_t));
1233 ev_io_set (&pipe_w, evfd, EV_READ);
1234 } 2630 }
1235 else 2631 else
1236#endif 2632#endif
1237 { 2633 {
1238 while (pipe (evpipe)) 2634#ifdef _WIN32
1239 ev_syserr ("(libev) error creating signal/async pipe"); 2635 WSABUF buf;
1240 2636 DWORD sent;
1241 fd_intern (evpipe [0]); 2637 buf.buf = (char *)&buf;
1242 fd_intern (evpipe [1]); 2638 buf.len = 1;
1243 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2639 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2640#else
2641 write (evpipe [1], &(evpipe [1]), 1);
2642#endif
1244 } 2643 }
1245
1246 ev_io_start (EV_A_ &pipe_w);
1247 ev_unref (EV_A); /* watcher should not keep loop alive */
1248 }
1249}
1250
1251inline_size void
1252evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1253{
1254 if (!*flag)
1255 {
1256 int old_errno = errno; /* save errno because write might clobber it */
1257
1258 *flag = 1;
1259
1260#if EV_USE_EVENTFD
1261 if (evfd >= 0)
1262 {
1263 uint64_t counter = 1;
1264 write (evfd, &counter, sizeof (uint64_t));
1265 }
1266 else
1267#endif
1268 write (evpipe [1], &old_errno, 1);
1269 2644
1270 errno = old_errno; 2645 errno = old_errno;
1271 } 2646 }
1272} 2647}
1273 2648
… …
1276static void 2651static void
1277pipecb (EV_P_ ev_io *iow, int revents) 2652pipecb (EV_P_ ev_io *iow, int revents)
1278{ 2653{
1279 int i; 2654 int i;
1280 2655
2656 if (revents & EV_READ)
2657 {
1281#if EV_USE_EVENTFD 2658#if EV_USE_EVENTFD
1282 if (evfd >= 0) 2659 if (evpipe [0] < 0)
1283 { 2660 {
1284 uint64_t counter; 2661 uint64_t counter;
1285 read (evfd, &counter, sizeof (uint64_t)); 2662 read (evpipe [1], &counter, sizeof (uint64_t));
1286 } 2663 }
1287 else 2664 else
1288#endif 2665#endif
1289 { 2666 {
1290 char dummy; 2667 char dummy[4];
2668#ifdef _WIN32
2669 WSABUF buf;
2670 DWORD recvd;
2671 DWORD flags = 0;
2672 buf.buf = dummy;
2673 buf.len = sizeof (dummy);
2674 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2675#else
1291 read (evpipe [0], &dummy, 1); 2676 read (evpipe [0], &dummy, sizeof (dummy));
2677#endif
2678 }
1292 } 2679 }
1293 2680
2681 pipe_write_skipped = 0;
2682
2683 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2684
2685#if EV_SIGNAL_ENABLE
1294 if (sig_pending) 2686 if (sig_pending)
1295 { 2687 {
1296 sig_pending = 0; 2688 sig_pending = 0;
1297 2689
2690 ECB_MEMORY_FENCE;
2691
1298 for (i = EV_NSIG - 1; i--; ) 2692 for (i = EV_NSIG - 1; i--; )
1299 if (expect_false (signals [i].pending)) 2693 if (ecb_expect_false (signals [i].pending))
1300 ev_feed_signal_event (EV_A_ i + 1); 2694 ev_feed_signal_event (EV_A_ i + 1);
1301 } 2695 }
2696#endif
1302 2697
1303#if EV_ASYNC_ENABLE 2698#if EV_ASYNC_ENABLE
1304 if (async_pending) 2699 if (async_pending)
1305 { 2700 {
1306 async_pending = 0; 2701 async_pending = 0;
2702
2703 ECB_MEMORY_FENCE;
1307 2704
1308 for (i = asynccnt; i--; ) 2705 for (i = asynccnt; i--; )
1309 if (asyncs [i]->sent) 2706 if (asyncs [i]->sent)
1310 { 2707 {
1311 asyncs [i]->sent = 0; 2708 asyncs [i]->sent = 0;
2709 ECB_MEMORY_FENCE_RELEASE;
1312 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2710 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1313 } 2711 }
1314 } 2712 }
1315#endif 2713#endif
1316} 2714}
1317 2715
1318/*****************************************************************************/ 2716/*****************************************************************************/
1319 2717
2718void
2719ev_feed_signal (int signum) EV_NOEXCEPT
2720{
2721#if EV_MULTIPLICITY
2722 EV_P;
2723 ECB_MEMORY_FENCE_ACQUIRE;
2724 EV_A = signals [signum - 1].loop;
2725
2726 if (!EV_A)
2727 return;
2728#endif
2729
2730 signals [signum - 1].pending = 1;
2731 evpipe_write (EV_A_ &sig_pending);
2732}
2733
1320static void 2734static void
1321ev_sighandler (int signum) 2735ev_sighandler (int signum)
1322{ 2736{
1323#if EV_MULTIPLICITY
1324 EV_P = signals [signum - 1].loop;
1325#endif
1326
1327#ifdef _WIN32 2737#ifdef _WIN32
1328 signal (signum, ev_sighandler); 2738 signal (signum, ev_sighandler);
1329#endif 2739#endif
1330 2740
1331 signals [signum - 1].pending = 1; 2741 ev_feed_signal (signum);
1332 evpipe_write (EV_A_ &sig_pending);
1333} 2742}
1334 2743
1335void noinline 2744ecb_noinline
2745void
1336ev_feed_signal_event (EV_P_ int signum) 2746ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
1337{ 2747{
1338 WL w; 2748 WL w;
1339 2749
1340 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2750 if (ecb_expect_false (signum <= 0 || signum >= EV_NSIG))
1341 return; 2751 return;
1342 2752
1343 --signum; 2753 --signum;
1344 2754
1345#if EV_MULTIPLICITY 2755#if EV_MULTIPLICITY
1346 /* it is permissible to try to feed a signal to the wrong loop */ 2756 /* it is permissible to try to feed a signal to the wrong loop */
1347 /* or, likely more useful, feeding a signal nobody is waiting for */ 2757 /* or, likely more useful, feeding a signal nobody is waiting for */
1348 2758
1349 if (expect_false (signals [signum].loop != EV_A)) 2759 if (ecb_expect_false (signals [signum].loop != EV_A))
1350 return; 2760 return;
1351#endif 2761#endif
1352 2762
1353 signals [signum].pending = 0; 2763 signals [signum].pending = 0;
2764 ECB_MEMORY_FENCE_RELEASE;
1354 2765
1355 for (w = signals [signum].head; w; w = w->next) 2766 for (w = signals [signum].head; w; w = w->next)
1356 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2767 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1357} 2768}
1358 2769
… …
1374 break; 2785 break;
1375 } 2786 }
1376} 2787}
1377#endif 2788#endif
1378 2789
2790#endif
2791
1379/*****************************************************************************/ 2792/*****************************************************************************/
1380 2793
2794#if EV_CHILD_ENABLE
1381static WL childs [EV_PID_HASHSIZE]; 2795static WL childs [EV_PID_HASHSIZE];
1382
1383#ifndef _WIN32
1384 2796
1385static ev_signal childev; 2797static ev_signal childev;
1386 2798
1387#ifndef WIFCONTINUED 2799#ifndef WIFCONTINUED
1388# define WIFCONTINUED(status) 0 2800# define WIFCONTINUED(status) 0
… …
1393child_reap (EV_P_ int chain, int pid, int status) 2805child_reap (EV_P_ int chain, int pid, int status)
1394{ 2806{
1395 ev_child *w; 2807 ev_child *w;
1396 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2808 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1397 2809
1398 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2810 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1399 { 2811 {
1400 if ((w->pid == pid || !w->pid) 2812 if ((w->pid == pid || !w->pid)
1401 && (!traced || (w->flags & 1))) 2813 && (!traced || (w->flags & 1)))
1402 { 2814 {
1403 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2815 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1428 /* make sure we are called again until all children have been reaped */ 2840 /* make sure we are called again until all children have been reaped */
1429 /* we need to do it this way so that the callback gets called before we continue */ 2841 /* we need to do it this way so that the callback gets called before we continue */
1430 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2842 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1431 2843
1432 child_reap (EV_A_ pid, pid, status); 2844 child_reap (EV_A_ pid, pid, status);
1433 if (EV_PID_HASHSIZE > 1) 2845 if ((EV_PID_HASHSIZE) > 1)
1434 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2846 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1435} 2847}
1436 2848
1437#endif 2849#endif
1438 2850
1439/*****************************************************************************/ 2851/*****************************************************************************/
1440 2852
2853#if EV_USE_IOCP
2854# include "ev_iocp.c"
2855#endif
1441#if EV_USE_PORT 2856#if EV_USE_PORT
1442# include "ev_port.c" 2857# include "ev_port.c"
1443#endif 2858#endif
1444#if EV_USE_KQUEUE 2859#if EV_USE_KQUEUE
1445# include "ev_kqueue.c" 2860# include "ev_kqueue.c"
1446#endif 2861#endif
1447#if EV_USE_EPOLL 2862#if EV_USE_EPOLL
1448# include "ev_epoll.c" 2863# include "ev_epoll.c"
1449#endif 2864#endif
2865#if EV_USE_LINUXAIO
2866# include "ev_linuxaio.c"
2867#endif
2868#if EV_USE_IOURING
2869# include "ev_iouring.c"
2870#endif
1450#if EV_USE_POLL 2871#if EV_USE_POLL
1451# include "ev_poll.c" 2872# include "ev_poll.c"
1452#endif 2873#endif
1453#if EV_USE_SELECT 2874#if EV_USE_SELECT
1454# include "ev_select.c" 2875# include "ev_select.c"
1455#endif 2876#endif
1456 2877
1457int 2878ecb_cold int
1458ev_version_major (void) 2879ev_version_major (void) EV_NOEXCEPT
1459{ 2880{
1460 return EV_VERSION_MAJOR; 2881 return EV_VERSION_MAJOR;
1461} 2882}
1462 2883
1463int 2884ecb_cold int
1464ev_version_minor (void) 2885ev_version_minor (void) EV_NOEXCEPT
1465{ 2886{
1466 return EV_VERSION_MINOR; 2887 return EV_VERSION_MINOR;
1467} 2888}
1468 2889
1469/* return true if we are running with elevated privileges and should ignore env variables */ 2890/* return true if we are running with elevated privileges and should ignore env variables */
1470int inline_size 2891inline_size ecb_cold int
1471enable_secure (void) 2892enable_secure (void)
1472{ 2893{
1473#ifdef _WIN32 2894#ifdef _WIN32
1474 return 0; 2895 return 0;
1475#else 2896#else
1476 return getuid () != geteuid () 2897 return getuid () != geteuid ()
1477 || getgid () != getegid (); 2898 || getgid () != getegid ();
1478#endif 2899#endif
1479} 2900}
1480 2901
2902ecb_cold
1481unsigned int 2903unsigned int
1482ev_supported_backends (void) 2904ev_supported_backends (void) EV_NOEXCEPT
1483{ 2905{
1484 unsigned int flags = 0; 2906 unsigned int flags = 0;
1485 2907
1486 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2908 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1487 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2909 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
1488 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 2910 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2911 if (EV_USE_LINUXAIO) flags |= EVBACKEND_LINUXAIO;
2912 if (EV_USE_IOURING ) flags |= EVBACKEND_IOURING;
1489 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 2913 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
1490 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2914 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
1491 2915
1492 return flags; 2916 return flags;
1493} 2917}
1494 2918
2919ecb_cold
1495unsigned int 2920unsigned int
1496ev_recommended_backends (void) 2921ev_recommended_backends (void) EV_NOEXCEPT
1497{ 2922{
1498 unsigned int flags = ev_supported_backends (); 2923 unsigned int flags = ev_supported_backends ();
1499 2924
1500#ifndef __NetBSD__ 2925#ifndef __NetBSD__
1501 /* kqueue is borked on everything but netbsd apparently */ 2926 /* kqueue is borked on everything but netbsd apparently */
… …
1505#ifdef __APPLE__ 2930#ifdef __APPLE__
1506 /* only select works correctly on that "unix-certified" platform */ 2931 /* only select works correctly on that "unix-certified" platform */
1507 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2932 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1508 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 2933 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1509#endif 2934#endif
2935#ifdef __FreeBSD__
2936 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2937#endif
2938
2939 /* TODO: linuxaio is very experimental */
2940#if !EV_RECOMMEND_LINUXAIO
2941 flags &= ~EVBACKEND_LINUXAIO;
2942#endif
2943 /* TODO: linuxaio is super experimental */
2944#if !EV_RECOMMEND_IOURING
2945 flags &= ~EVBACKEND_IOURING;
2946#endif
1510 2947
1511 return flags; 2948 return flags;
1512} 2949}
1513 2950
2951ecb_cold
1514unsigned int 2952unsigned int
1515ev_embeddable_backends (void) 2953ev_embeddable_backends (void) EV_NOEXCEPT
1516{ 2954{
1517 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2955 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1518 2956
1519 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2957 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1520 /* please fix it and tell me how to detect the fix */ 2958 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1521 flags &= ~EVBACKEND_EPOLL; 2959 flags &= ~EVBACKEND_EPOLL;
2960
2961 /* EVBACKEND_LINUXAIO is theoretically embeddable, but suffers from a performance overhead */
2962
2963 /* EVBACKEND_IOURING is practically embeddable, but the current implementation is not
2964 * because our backend_fd is the epoll fd we need as fallback.
2965 * if the kernel ever is fixed, this might change...
2966 */
1522 2967
1523 return flags; 2968 return flags;
1524} 2969}
1525 2970
1526unsigned int 2971unsigned int
1527ev_backend (EV_P) 2972ev_backend (EV_P) EV_NOEXCEPT
1528{ 2973{
1529 return backend; 2974 return backend;
1530} 2975}
1531 2976
1532#if EV_MINIMAL < 2 2977#if EV_FEATURE_API
1533unsigned int 2978unsigned int
1534ev_loop_count (EV_P) 2979ev_iteration (EV_P) EV_NOEXCEPT
1535{ 2980{
1536 return loop_count; 2981 return loop_count;
1537} 2982}
1538 2983
1539unsigned int 2984unsigned int
1540ev_loop_depth (EV_P) 2985ev_depth (EV_P) EV_NOEXCEPT
1541{ 2986{
1542 return loop_depth; 2987 return loop_depth;
1543} 2988}
1544 2989
1545void 2990void
1546ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2991ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1547{ 2992{
1548 io_blocktime = interval; 2993 io_blocktime = interval;
1549} 2994}
1550 2995
1551void 2996void
1552ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2997ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1553{ 2998{
1554 timeout_blocktime = interval; 2999 timeout_blocktime = interval;
1555} 3000}
1556 3001
1557void 3002void
1558ev_set_userdata (EV_P_ void *data) 3003ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
1559{ 3004{
1560 userdata = data; 3005 userdata = data;
1561} 3006}
1562 3007
1563void * 3008void *
1564ev_userdata (EV_P) 3009ev_userdata (EV_P) EV_NOEXCEPT
1565{ 3010{
1566 return userdata; 3011 return userdata;
1567} 3012}
1568 3013
3014void
1569void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 3015ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
1570{ 3016{
1571 invoke_cb = invoke_pending_cb; 3017 invoke_cb = invoke_pending_cb;
1572} 3018}
1573 3019
3020void
1574void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 3021ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
1575{ 3022{
1576 release_cb = release; 3023 release_cb = release;
1577 acquire_cb = acquire; 3024 acquire_cb = acquire;
1578} 3025}
1579#endif 3026#endif
1580 3027
1581/* initialise a loop structure, must be zero-initialised */ 3028/* initialise a loop structure, must be zero-initialised */
1582static void noinline 3029ecb_noinline ecb_cold
3030static void
1583loop_init (EV_P_ unsigned int flags) 3031loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
1584{ 3032{
1585 if (!backend) 3033 if (!backend)
1586 { 3034 {
3035 origflags = flags;
3036
1587#if EV_USE_REALTIME 3037#if EV_USE_REALTIME
1588 if (!have_realtime) 3038 if (!have_realtime)
1589 { 3039 {
1590 struct timespec ts; 3040 struct timespec ts;
1591 3041
… …
1613 if (!(flags & EVFLAG_NOENV) 3063 if (!(flags & EVFLAG_NOENV)
1614 && !enable_secure () 3064 && !enable_secure ()
1615 && getenv ("LIBEV_FLAGS")) 3065 && getenv ("LIBEV_FLAGS"))
1616 flags = atoi (getenv ("LIBEV_FLAGS")); 3066 flags = atoi (getenv ("LIBEV_FLAGS"));
1617 3067
1618 ev_rt_now = ev_time (); 3068 ev_rt_now = ev_time ();
1619 mn_now = get_clock (); 3069 mn_now = get_clock ();
1620 now_floor = mn_now; 3070 now_floor = mn_now;
1621 rtmn_diff = ev_rt_now - mn_now; 3071 rtmn_diff = ev_rt_now - mn_now;
1622#if EV_MINIMAL < 2 3072#if EV_FEATURE_API
1623 invoke_cb = ev_invoke_pending; 3073 invoke_cb = ev_invoke_pending;
1624#endif 3074#endif
1625 3075
1626 io_blocktime = 0.; 3076 io_blocktime = 0.;
1627 timeout_blocktime = 0.; 3077 timeout_blocktime = 0.;
1628 backend = 0; 3078 backend = 0;
1629 backend_fd = -1; 3079 backend_fd = -1;
1630 sig_pending = 0; 3080 sig_pending = 0;
1631#if EV_ASYNC_ENABLE 3081#if EV_ASYNC_ENABLE
1632 async_pending = 0; 3082 async_pending = 0;
1633#endif 3083#endif
3084 pipe_write_skipped = 0;
3085 pipe_write_wanted = 0;
3086 evpipe [0] = -1;
3087 evpipe [1] = -1;
1634#if EV_USE_INOTIFY 3088#if EV_USE_INOTIFY
1635 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 3089 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1636#endif 3090#endif
1637#if EV_USE_SIGNALFD 3091#if EV_USE_SIGNALFD
1638 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 3092 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1639#endif 3093#endif
1640 3094
1641 if (!(flags & 0x0000ffffU)) 3095 if (!(flags & EVBACKEND_MASK))
1642 flags |= ev_recommended_backends (); 3096 flags |= ev_recommended_backends ();
1643 3097
3098#if EV_USE_IOCP
3099 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
3100#endif
1644#if EV_USE_PORT 3101#if EV_USE_PORT
1645 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 3102 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1646#endif 3103#endif
1647#if EV_USE_KQUEUE 3104#if EV_USE_KQUEUE
1648 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 3105 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
3106#endif
3107#if EV_USE_IOURING
3108 if (!backend && (flags & EVBACKEND_IOURING )) backend = iouring_init (EV_A_ flags);
3109#endif
3110#if EV_USE_LINUXAIO
3111 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
1649#endif 3112#endif
1650#if EV_USE_EPOLL 3113#if EV_USE_EPOLL
1651 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 3114 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
1652#endif 3115#endif
1653#if EV_USE_POLL 3116#if EV_USE_POLL
1654 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 3117 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
1655#endif 3118#endif
1656#if EV_USE_SELECT 3119#if EV_USE_SELECT
1657 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 3120 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
1658#endif 3121#endif
1659 3122
1660 ev_prepare_init (&pending_w, pendingcb); 3123 ev_prepare_init (&pending_w, pendingcb);
1661 3124
3125#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1662 ev_init (&pipe_w, pipecb); 3126 ev_init (&pipe_w, pipecb);
1663 ev_set_priority (&pipe_w, EV_MAXPRI); 3127 ev_set_priority (&pipe_w, EV_MAXPRI);
3128#endif
1664 } 3129 }
1665} 3130}
1666 3131
1667/* free up a loop structure */ 3132/* free up a loop structure */
1668static void noinline 3133ecb_cold
3134void
1669loop_destroy (EV_P) 3135ev_loop_destroy (EV_P)
1670{ 3136{
1671 int i; 3137 int i;
3138
3139#if EV_MULTIPLICITY
3140 /* mimic free (0) */
3141 if (!EV_A)
3142 return;
3143#endif
3144
3145#if EV_CLEANUP_ENABLE
3146 /* queue cleanup watchers (and execute them) */
3147 if (ecb_expect_false (cleanupcnt))
3148 {
3149 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
3150 EV_INVOKE_PENDING;
3151 }
3152#endif
3153
3154#if EV_CHILD_ENABLE
3155 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
3156 {
3157 ev_ref (EV_A); /* child watcher */
3158 ev_signal_stop (EV_A_ &childev);
3159 }
3160#endif
1672 3161
1673 if (ev_is_active (&pipe_w)) 3162 if (ev_is_active (&pipe_w))
1674 { 3163 {
1675 /*ev_ref (EV_A);*/ 3164 /*ev_ref (EV_A);*/
1676 /*ev_io_stop (EV_A_ &pipe_w);*/ 3165 /*ev_io_stop (EV_A_ &pipe_w);*/
1677 3166
1678#if EV_USE_EVENTFD
1679 if (evfd >= 0)
1680 close (evfd);
1681#endif
1682
1683 if (evpipe [0] >= 0)
1684 {
1685 EV_WIN32_CLOSE_FD (evpipe [0]); 3167 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1686 EV_WIN32_CLOSE_FD (evpipe [1]); 3168 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1687 }
1688 } 3169 }
1689 3170
1690#if EV_USE_SIGNALFD 3171#if EV_USE_SIGNALFD
1691 if (ev_is_active (&sigfd_w)) 3172 if (ev_is_active (&sigfd_w))
1692 close (sigfd); 3173 close (sigfd);
… …
1698#endif 3179#endif
1699 3180
1700 if (backend_fd >= 0) 3181 if (backend_fd >= 0)
1701 close (backend_fd); 3182 close (backend_fd);
1702 3183
3184#if EV_USE_IOCP
3185 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
3186#endif
1703#if EV_USE_PORT 3187#if EV_USE_PORT
1704 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3188 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1705#endif 3189#endif
1706#if EV_USE_KQUEUE 3190#if EV_USE_KQUEUE
1707 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3191 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
3192#endif
3193#if EV_USE_IOURING
3194 if (backend == EVBACKEND_IOURING ) iouring_destroy (EV_A);
3195#endif
3196#if EV_USE_LINUXAIO
3197 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
1708#endif 3198#endif
1709#if EV_USE_EPOLL 3199#if EV_USE_EPOLL
1710 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3200 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
1711#endif 3201#endif
1712#if EV_USE_POLL 3202#if EV_USE_POLL
1713 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3203 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
1714#endif 3204#endif
1715#if EV_USE_SELECT 3205#if EV_USE_SELECT
1716 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3206 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
1717#endif 3207#endif
1718 3208
1719 for (i = NUMPRI; i--; ) 3209 for (i = NUMPRI; i--; )
1720 { 3210 {
1721 array_free (pending, [i]); 3211 array_free (pending, [i]);
… …
1734 array_free (periodic, EMPTY); 3224 array_free (periodic, EMPTY);
1735#endif 3225#endif
1736#if EV_FORK_ENABLE 3226#if EV_FORK_ENABLE
1737 array_free (fork, EMPTY); 3227 array_free (fork, EMPTY);
1738#endif 3228#endif
3229#if EV_CLEANUP_ENABLE
3230 array_free (cleanup, EMPTY);
3231#endif
1739 array_free (prepare, EMPTY); 3232 array_free (prepare, EMPTY);
1740 array_free (check, EMPTY); 3233 array_free (check, EMPTY);
1741#if EV_ASYNC_ENABLE 3234#if EV_ASYNC_ENABLE
1742 array_free (async, EMPTY); 3235 array_free (async, EMPTY);
1743#endif 3236#endif
1744 3237
1745 backend = 0; 3238 backend = 0;
3239
3240#if EV_MULTIPLICITY
3241 if (ev_is_default_loop (EV_A))
3242#endif
3243 ev_default_loop_ptr = 0;
3244#if EV_MULTIPLICITY
3245 else
3246 ev_free (EV_A);
3247#endif
1746} 3248}
1747 3249
1748#if EV_USE_INOTIFY 3250#if EV_USE_INOTIFY
1749inline_size void infy_fork (EV_P); 3251inline_size void infy_fork (EV_P);
1750#endif 3252#endif
1751 3253
1752inline_size void 3254inline_size void
1753loop_fork (EV_P) 3255loop_fork (EV_P)
1754{ 3256{
1755#if EV_USE_PORT 3257#if EV_USE_PORT
1756 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3258 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1757#endif 3259#endif
1758#if EV_USE_KQUEUE 3260#if EV_USE_KQUEUE
1759 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 3261 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
3262#endif
3263#if EV_USE_IOURING
3264 if (backend == EVBACKEND_IOURING ) iouring_fork (EV_A);
3265#endif
3266#if EV_USE_LINUXAIO
3267 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
1760#endif 3268#endif
1761#if EV_USE_EPOLL 3269#if EV_USE_EPOLL
1762 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3270 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
1763#endif 3271#endif
1764#if EV_USE_INOTIFY 3272#if EV_USE_INOTIFY
1765 infy_fork (EV_A); 3273 infy_fork (EV_A);
1766#endif 3274#endif
1767 3275
3276#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1768 if (ev_is_active (&pipe_w)) 3277 if (ev_is_active (&pipe_w) && postfork != 2)
1769 { 3278 {
1770 /* this "locks" the handlers against writing to the pipe */ 3279 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1771 /* while we modify the fd vars */
1772 sig_pending = 1;
1773#if EV_ASYNC_ENABLE
1774 async_pending = 1;
1775#endif
1776 3280
1777 ev_ref (EV_A); 3281 ev_ref (EV_A);
1778 ev_io_stop (EV_A_ &pipe_w); 3282 ev_io_stop (EV_A_ &pipe_w);
1779 3283
1780#if EV_USE_EVENTFD
1781 if (evfd >= 0)
1782 close (evfd);
1783#endif
1784
1785 if (evpipe [0] >= 0) 3284 if (evpipe [0] >= 0)
1786 {
1787 EV_WIN32_CLOSE_FD (evpipe [0]); 3285 EV_WIN32_CLOSE_FD (evpipe [0]);
1788 EV_WIN32_CLOSE_FD (evpipe [1]);
1789 }
1790 3286
1791 evpipe_init (EV_A); 3287 evpipe_init (EV_A);
1792 /* now iterate over everything, in case we missed something */ 3288 /* iterate over everything, in case we missed something before */
1793 pipecb (EV_A_ &pipe_w, EV_READ); 3289 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1794 } 3290 }
3291#endif
1795 3292
1796 postfork = 0; 3293 postfork = 0;
1797} 3294}
1798 3295
1799#if EV_MULTIPLICITY 3296#if EV_MULTIPLICITY
1800 3297
3298ecb_cold
1801struct ev_loop * 3299struct ev_loop *
1802ev_loop_new (unsigned int flags) 3300ev_loop_new (unsigned int flags) EV_NOEXCEPT
1803{ 3301{
1804 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3302 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1805 3303
1806 memset (EV_A, 0, sizeof (struct ev_loop)); 3304 memset (EV_A, 0, sizeof (struct ev_loop));
1807 loop_init (EV_A_ flags); 3305 loop_init (EV_A_ flags);
1808 3306
1809 if (ev_backend (EV_A)) 3307 if (ev_backend (EV_A))
1810 return EV_A; 3308 return EV_A;
1811 3309
3310 ev_free (EV_A);
1812 return 0; 3311 return 0;
1813} 3312}
1814 3313
1815void
1816ev_loop_destroy (EV_P)
1817{
1818 loop_destroy (EV_A);
1819 ev_free (loop);
1820}
1821
1822void
1823ev_loop_fork (EV_P)
1824{
1825 postfork = 1; /* must be in line with ev_default_fork */
1826}
1827#endif /* multiplicity */ 3314#endif /* multiplicity */
1828 3315
1829#if EV_VERIFY 3316#if EV_VERIFY
1830static void noinline 3317ecb_noinline ecb_cold
3318static void
1831verify_watcher (EV_P_ W w) 3319verify_watcher (EV_P_ W w)
1832{ 3320{
1833 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3321 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1834 3322
1835 if (w->pending) 3323 if (w->pending)
1836 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3324 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1837} 3325}
1838 3326
1839static void noinline 3327ecb_noinline ecb_cold
3328static void
1840verify_heap (EV_P_ ANHE *heap, int N) 3329verify_heap (EV_P_ ANHE *heap, int N)
1841{ 3330{
1842 int i; 3331 int i;
1843 3332
1844 for (i = HEAP0; i < N + HEAP0; ++i) 3333 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1849 3338
1850 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3339 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1851 } 3340 }
1852} 3341}
1853 3342
1854static void noinline 3343ecb_noinline ecb_cold
3344static void
1855array_verify (EV_P_ W *ws, int cnt) 3345array_verify (EV_P_ W *ws, int cnt)
1856{ 3346{
1857 while (cnt--) 3347 while (cnt--)
1858 { 3348 {
1859 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3349 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1860 verify_watcher (EV_A_ ws [cnt]); 3350 verify_watcher (EV_A_ ws [cnt]);
1861 } 3351 }
1862} 3352}
1863#endif 3353#endif
1864 3354
1865#if EV_MINIMAL < 2 3355#if EV_FEATURE_API
1866void 3356void ecb_cold
1867ev_loop_verify (EV_P) 3357ev_verify (EV_P) EV_NOEXCEPT
1868{ 3358{
1869#if EV_VERIFY 3359#if EV_VERIFY
1870 int i; 3360 int i;
1871 WL w; 3361 WL w, w2;
1872 3362
1873 assert (activecnt >= -1); 3363 assert (activecnt >= -1);
1874 3364
1875 assert (fdchangemax >= fdchangecnt); 3365 assert (fdchangemax >= fdchangecnt);
1876 for (i = 0; i < fdchangecnt; ++i) 3366 for (i = 0; i < fdchangecnt; ++i)
1877 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3367 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1878 3368
1879 assert (anfdmax >= 0); 3369 assert (anfdmax >= 0);
1880 for (i = 0; i < anfdmax; ++i) 3370 for (i = 0; i < anfdmax; ++i)
3371 {
3372 int j = 0;
3373
1881 for (w = anfds [i].head; w; w = w->next) 3374 for (w = w2 = anfds [i].head; w; w = w->next)
1882 { 3375 {
1883 verify_watcher (EV_A_ (W)w); 3376 verify_watcher (EV_A_ (W)w);
3377
3378 if (j++ & 1)
3379 {
3380 assert (("libev: io watcher list contains a loop", w != w2));
3381 w2 = w2->next;
3382 }
3383
1884 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3384 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1885 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 3385 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1886 } 3386 }
3387 }
1887 3388
1888 assert (timermax >= timercnt); 3389 assert (timermax >= timercnt);
1889 verify_heap (EV_A_ timers, timercnt); 3390 verify_heap (EV_A_ timers, timercnt);
1890 3391
1891#if EV_PERIODIC_ENABLE 3392#if EV_PERIODIC_ENABLE
… …
1906#if EV_FORK_ENABLE 3407#if EV_FORK_ENABLE
1907 assert (forkmax >= forkcnt); 3408 assert (forkmax >= forkcnt);
1908 array_verify (EV_A_ (W *)forks, forkcnt); 3409 array_verify (EV_A_ (W *)forks, forkcnt);
1909#endif 3410#endif
1910 3411
3412#if EV_CLEANUP_ENABLE
3413 assert (cleanupmax >= cleanupcnt);
3414 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
3415#endif
3416
1911#if EV_ASYNC_ENABLE 3417#if EV_ASYNC_ENABLE
1912 assert (asyncmax >= asynccnt); 3418 assert (asyncmax >= asynccnt);
1913 array_verify (EV_A_ (W *)asyncs, asynccnt); 3419 array_verify (EV_A_ (W *)asyncs, asynccnt);
1914#endif 3420#endif
1915 3421
3422#if EV_PREPARE_ENABLE
1916 assert (preparemax >= preparecnt); 3423 assert (preparemax >= preparecnt);
1917 array_verify (EV_A_ (W *)prepares, preparecnt); 3424 array_verify (EV_A_ (W *)prepares, preparecnt);
3425#endif
1918 3426
3427#if EV_CHECK_ENABLE
1919 assert (checkmax >= checkcnt); 3428 assert (checkmax >= checkcnt);
1920 array_verify (EV_A_ (W *)checks, checkcnt); 3429 array_verify (EV_A_ (W *)checks, checkcnt);
3430#endif
1921 3431
1922# if 0 3432# if 0
3433#if EV_CHILD_ENABLE
1923 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 3434 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1924 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending) 3435 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
3436#endif
1925# endif 3437# endif
1926#endif 3438#endif
1927} 3439}
1928#endif 3440#endif
1929 3441
1930#if EV_MULTIPLICITY 3442#if EV_MULTIPLICITY
3443ecb_cold
1931struct ev_loop * 3444struct ev_loop *
1932ev_default_loop_init (unsigned int flags)
1933#else 3445#else
1934int 3446int
3447#endif
1935ev_default_loop (unsigned int flags) 3448ev_default_loop (unsigned int flags) EV_NOEXCEPT
1936#endif
1937{ 3449{
1938 if (!ev_default_loop_ptr) 3450 if (!ev_default_loop_ptr)
1939 { 3451 {
1940#if EV_MULTIPLICITY 3452#if EV_MULTIPLICITY
1941 EV_P = ev_default_loop_ptr = &default_loop_struct; 3453 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1945 3457
1946 loop_init (EV_A_ flags); 3458 loop_init (EV_A_ flags);
1947 3459
1948 if (ev_backend (EV_A)) 3460 if (ev_backend (EV_A))
1949 { 3461 {
1950#ifndef _WIN32 3462#if EV_CHILD_ENABLE
1951 ev_signal_init (&childev, childcb, SIGCHLD); 3463 ev_signal_init (&childev, childcb, SIGCHLD);
1952 ev_set_priority (&childev, EV_MAXPRI); 3464 ev_set_priority (&childev, EV_MAXPRI);
1953 ev_signal_start (EV_A_ &childev); 3465 ev_signal_start (EV_A_ &childev);
1954 ev_unref (EV_A); /* child watcher should not keep loop alive */ 3466 ev_unref (EV_A); /* child watcher should not keep loop alive */
1955#endif 3467#endif
… …
1960 3472
1961 return ev_default_loop_ptr; 3473 return ev_default_loop_ptr;
1962} 3474}
1963 3475
1964void 3476void
1965ev_default_destroy (void) 3477ev_loop_fork (EV_P) EV_NOEXCEPT
1966{ 3478{
1967#if EV_MULTIPLICITY 3479 postfork = 1;
1968 EV_P = ev_default_loop_ptr;
1969#endif
1970
1971 ev_default_loop_ptr = 0;
1972
1973#ifndef _WIN32
1974 ev_ref (EV_A); /* child watcher */
1975 ev_signal_stop (EV_A_ &childev);
1976#endif
1977
1978 loop_destroy (EV_A);
1979}
1980
1981void
1982ev_default_fork (void)
1983{
1984#if EV_MULTIPLICITY
1985 EV_P = ev_default_loop_ptr;
1986#endif
1987
1988 postfork = 1; /* must be in line with ev_loop_fork */
1989} 3480}
1990 3481
1991/*****************************************************************************/ 3482/*****************************************************************************/
1992 3483
1993void 3484void
… …
1995{ 3486{
1996 EV_CB_INVOKE ((W)w, revents); 3487 EV_CB_INVOKE ((W)w, revents);
1997} 3488}
1998 3489
1999unsigned int 3490unsigned int
2000ev_pending_count (EV_P) 3491ev_pending_count (EV_P) EV_NOEXCEPT
2001{ 3492{
2002 int pri; 3493 int pri;
2003 unsigned int count = 0; 3494 unsigned int count = 0;
2004 3495
2005 for (pri = NUMPRI; pri--; ) 3496 for (pri = NUMPRI; pri--; )
2006 count += pendingcnt [pri]; 3497 count += pendingcnt [pri];
2007 3498
2008 return count; 3499 return count;
2009} 3500}
2010 3501
2011void noinline 3502ecb_noinline
3503void
2012ev_invoke_pending (EV_P) 3504ev_invoke_pending (EV_P)
2013{ 3505{
2014 int pri; 3506 pendingpri = NUMPRI;
2015 3507
2016 for (pri = NUMPRI; pri--; ) 3508 do
3509 {
3510 --pendingpri;
3511
3512 /* pendingpri possibly gets modified in the inner loop */
2017 while (pendingcnt [pri]) 3513 while (pendingcnt [pendingpri])
2018 { 3514 {
2019 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3515 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2020 3516
2021 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2022 /* ^ this is no longer true, as pending_w could be here */
2023
2024 p->w->pending = 0; 3517 p->w->pending = 0;
2025 EV_CB_INVOKE (p->w, p->events); 3518 EV_CB_INVOKE (p->w, p->events);
2026 EV_FREQUENT_CHECK; 3519 EV_FREQUENT_CHECK;
2027 } 3520 }
3521 }
3522 while (pendingpri);
2028} 3523}
2029 3524
2030#if EV_IDLE_ENABLE 3525#if EV_IDLE_ENABLE
2031/* make idle watchers pending. this handles the "call-idle */ 3526/* make idle watchers pending. this handles the "call-idle */
2032/* only when higher priorities are idle" logic */ 3527/* only when higher priorities are idle" logic */
2033inline_size void 3528inline_size void
2034idle_reify (EV_P) 3529idle_reify (EV_P)
2035{ 3530{
2036 if (expect_false (idleall)) 3531 if (ecb_expect_false (idleall))
2037 { 3532 {
2038 int pri; 3533 int pri;
2039 3534
2040 for (pri = NUMPRI; pri--; ) 3535 for (pri = NUMPRI; pri--; )
2041 { 3536 {
… …
2071 { 3566 {
2072 ev_at (w) += w->repeat; 3567 ev_at (w) += w->repeat;
2073 if (ev_at (w) < mn_now) 3568 if (ev_at (w) < mn_now)
2074 ev_at (w) = mn_now; 3569 ev_at (w) = mn_now;
2075 3570
2076 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 3571 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > EV_TS_CONST (0.)));
2077 3572
2078 ANHE_at_cache (timers [HEAP0]); 3573 ANHE_at_cache (timers [HEAP0]);
2079 downheap (timers, timercnt, HEAP0); 3574 downheap (timers, timercnt, HEAP0);
2080 } 3575 }
2081 else 3576 else
… …
2084 EV_FREQUENT_CHECK; 3579 EV_FREQUENT_CHECK;
2085 feed_reverse (EV_A_ (W)w); 3580 feed_reverse (EV_A_ (W)w);
2086 } 3581 }
2087 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 3582 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
2088 3583
2089 feed_reverse_done (EV_A_ EV_TIMEOUT); 3584 feed_reverse_done (EV_A_ EV_TIMER);
2090 } 3585 }
2091} 3586}
2092 3587
2093#if EV_PERIODIC_ENABLE 3588#if EV_PERIODIC_ENABLE
3589
3590ecb_noinline
3591static void
3592periodic_recalc (EV_P_ ev_periodic *w)
3593{
3594 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3595 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3596
3597 /* the above almost always errs on the low side */
3598 while (at <= ev_rt_now)
3599 {
3600 ev_tstamp nat = at + w->interval;
3601
3602 /* when resolution fails us, we use ev_rt_now */
3603 if (ecb_expect_false (nat == at))
3604 {
3605 at = ev_rt_now;
3606 break;
3607 }
3608
3609 at = nat;
3610 }
3611
3612 ev_at (w) = at;
3613}
3614
2094/* make periodics pending */ 3615/* make periodics pending */
2095inline_size void 3616inline_size void
2096periodics_reify (EV_P) 3617periodics_reify (EV_P)
2097{ 3618{
2098 EV_FREQUENT_CHECK; 3619 EV_FREQUENT_CHECK;
2099 3620
2100 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3621 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2101 { 3622 {
2102 int feed_count = 0;
2103
2104 do 3623 do
2105 { 3624 {
2106 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3625 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2107 3626
2108 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3627 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2117 ANHE_at_cache (periodics [HEAP0]); 3636 ANHE_at_cache (periodics [HEAP0]);
2118 downheap (periodics, periodiccnt, HEAP0); 3637 downheap (periodics, periodiccnt, HEAP0);
2119 } 3638 }
2120 else if (w->interval) 3639 else if (w->interval)
2121 { 3640 {
2122 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3641 periodic_recalc (EV_A_ w);
2123 /* if next trigger time is not sufficiently in the future, put it there */
2124 /* this might happen because of floating point inexactness */
2125 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2126 {
2127 ev_at (w) += w->interval;
2128
2129 /* if interval is unreasonably low we might still have a time in the past */
2130 /* so correct this. this will make the periodic very inexact, but the user */
2131 /* has effectively asked to get triggered more often than possible */
2132 if (ev_at (w) < ev_rt_now)
2133 ev_at (w) = ev_rt_now;
2134 }
2135
2136 ANHE_at_cache (periodics [HEAP0]); 3642 ANHE_at_cache (periodics [HEAP0]);
2137 downheap (periodics, periodiccnt, HEAP0); 3643 downheap (periodics, periodiccnt, HEAP0);
2138 } 3644 }
2139 else 3645 else
2140 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3646 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2147 feed_reverse_done (EV_A_ EV_PERIODIC); 3653 feed_reverse_done (EV_A_ EV_PERIODIC);
2148 } 3654 }
2149} 3655}
2150 3656
2151/* simply recalculate all periodics */ 3657/* simply recalculate all periodics */
2152/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 3658/* TODO: maybe ensure that at least one event happens when jumping forward? */
2153static void noinline 3659ecb_noinline ecb_cold
3660static void
2154periodics_reschedule (EV_P) 3661periodics_reschedule (EV_P)
2155{ 3662{
2156 int i; 3663 int i;
2157 3664
2158 /* adjust periodics after time jump */ 3665 /* adjust periodics after time jump */
… …
2161 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3668 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2162 3669
2163 if (w->reschedule_cb) 3670 if (w->reschedule_cb)
2164 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3671 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2165 else if (w->interval) 3672 else if (w->interval)
2166 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3673 periodic_recalc (EV_A_ w);
2167 3674
2168 ANHE_at_cache (periodics [i]); 3675 ANHE_at_cache (periodics [i]);
2169 } 3676 }
2170 3677
2171 reheap (periodics, periodiccnt); 3678 reheap (periodics, periodiccnt);
2172} 3679}
2173#endif 3680#endif
2174 3681
2175/* adjust all timers by a given offset */ 3682/* adjust all timers by a given offset */
2176static void noinline 3683ecb_noinline ecb_cold
3684static void
2177timers_reschedule (EV_P_ ev_tstamp adjust) 3685timers_reschedule (EV_P_ ev_tstamp adjust)
2178{ 3686{
2179 int i; 3687 int i;
2180 3688
2181 for (i = 0; i < timercnt; ++i) 3689 for (i = 0; i < timercnt; ++i)
… …
2190/* also detect if there was a timejump, and act accordingly */ 3698/* also detect if there was a timejump, and act accordingly */
2191inline_speed void 3699inline_speed void
2192time_update (EV_P_ ev_tstamp max_block) 3700time_update (EV_P_ ev_tstamp max_block)
2193{ 3701{
2194#if EV_USE_MONOTONIC 3702#if EV_USE_MONOTONIC
2195 if (expect_true (have_monotonic)) 3703 if (ecb_expect_true (have_monotonic))
2196 { 3704 {
2197 int i; 3705 int i;
2198 ev_tstamp odiff = rtmn_diff; 3706 ev_tstamp odiff = rtmn_diff;
2199 3707
2200 mn_now = get_clock (); 3708 mn_now = get_clock ();
2201 3709
2202 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3710 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
2203 /* interpolate in the meantime */ 3711 /* interpolate in the meantime */
2204 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 3712 if (ecb_expect_true (mn_now - now_floor < EV_TS_CONST (MIN_TIMEJUMP * .5)))
2205 { 3713 {
2206 ev_rt_now = rtmn_diff + mn_now; 3714 ev_rt_now = rtmn_diff + mn_now;
2207 return; 3715 return;
2208 } 3716 }
2209 3717
… …
2218 * doesn't hurt either as we only do this on time-jumps or 3726 * doesn't hurt either as we only do this on time-jumps or
2219 * in the unlikely event of having been preempted here. 3727 * in the unlikely event of having been preempted here.
2220 */ 3728 */
2221 for (i = 4; --i; ) 3729 for (i = 4; --i; )
2222 { 3730 {
3731 ev_tstamp diff;
2223 rtmn_diff = ev_rt_now - mn_now; 3732 rtmn_diff = ev_rt_now - mn_now;
2224 3733
2225 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3734 diff = odiff - rtmn_diff;
3735
3736 if (ecb_expect_true ((diff < EV_TS_CONST (0.) ? -diff : diff) < EV_TS_CONST (MIN_TIMEJUMP)))
2226 return; /* all is well */ 3737 return; /* all is well */
2227 3738
2228 ev_rt_now = ev_time (); 3739 ev_rt_now = ev_time ();
2229 mn_now = get_clock (); 3740 mn_now = get_clock ();
2230 now_floor = mn_now; 3741 now_floor = mn_now;
… …
2239 else 3750 else
2240#endif 3751#endif
2241 { 3752 {
2242 ev_rt_now = ev_time (); 3753 ev_rt_now = ev_time ();
2243 3754
2244 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 3755 if (ecb_expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + EV_TS_CONST (MIN_TIMEJUMP)))
2245 { 3756 {
2246 /* adjust timers. this is easy, as the offset is the same for all of them */ 3757 /* adjust timers. this is easy, as the offset is the same for all of them */
2247 timers_reschedule (EV_A_ ev_rt_now - mn_now); 3758 timers_reschedule (EV_A_ ev_rt_now - mn_now);
2248#if EV_PERIODIC_ENABLE 3759#if EV_PERIODIC_ENABLE
2249 periodics_reschedule (EV_A); 3760 periodics_reschedule (EV_A);
… …
2252 3763
2253 mn_now = ev_rt_now; 3764 mn_now = ev_rt_now;
2254 } 3765 }
2255} 3766}
2256 3767
2257void 3768int
2258ev_loop (EV_P_ int flags) 3769ev_run (EV_P_ int flags)
2259{ 3770{
2260#if EV_MINIMAL < 2 3771#if EV_FEATURE_API
2261 ++loop_depth; 3772 ++loop_depth;
2262#endif 3773#endif
2263 3774
2264 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 3775 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2265 3776
2266 loop_done = EVUNLOOP_CANCEL; 3777 loop_done = EVBREAK_CANCEL;
2267 3778
2268 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 3779 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2269 3780
2270 do 3781 do
2271 { 3782 {
2272#if EV_VERIFY >= 2 3783#if EV_VERIFY >= 2
2273 ev_loop_verify (EV_A); 3784 ev_verify (EV_A);
2274#endif 3785#endif
2275 3786
2276#ifndef _WIN32 3787#ifndef _WIN32
2277 if (expect_false (curpid)) /* penalise the forking check even more */ 3788 if (ecb_expect_false (curpid)) /* penalise the forking check even more */
2278 if (expect_false (getpid () != curpid)) 3789 if (ecb_expect_false (getpid () != curpid))
2279 { 3790 {
2280 curpid = getpid (); 3791 curpid = getpid ();
2281 postfork = 1; 3792 postfork = 1;
2282 } 3793 }
2283#endif 3794#endif
2284 3795
2285#if EV_FORK_ENABLE 3796#if EV_FORK_ENABLE
2286 /* we might have forked, so queue fork handlers */ 3797 /* we might have forked, so queue fork handlers */
2287 if (expect_false (postfork)) 3798 if (ecb_expect_false (postfork))
2288 if (forkcnt) 3799 if (forkcnt)
2289 { 3800 {
2290 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3801 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2291 EV_INVOKE_PENDING; 3802 EV_INVOKE_PENDING;
2292 } 3803 }
2293#endif 3804#endif
2294 3805
3806#if EV_PREPARE_ENABLE
2295 /* queue prepare watchers (and execute them) */ 3807 /* queue prepare watchers (and execute them) */
2296 if (expect_false (preparecnt)) 3808 if (ecb_expect_false (preparecnt))
2297 { 3809 {
2298 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3810 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2299 EV_INVOKE_PENDING; 3811 EV_INVOKE_PENDING;
2300 } 3812 }
3813#endif
2301 3814
2302 if (expect_false (loop_done)) 3815 if (ecb_expect_false (loop_done))
2303 break; 3816 break;
2304 3817
2305 /* we might have forked, so reify kernel state if necessary */ 3818 /* we might have forked, so reify kernel state if necessary */
2306 if (expect_false (postfork)) 3819 if (ecb_expect_false (postfork))
2307 loop_fork (EV_A); 3820 loop_fork (EV_A);
2308 3821
2309 /* update fd-related kernel structures */ 3822 /* update fd-related kernel structures */
2310 fd_reify (EV_A); 3823 fd_reify (EV_A);
2311 3824
2312 /* calculate blocking time */ 3825 /* calculate blocking time */
2313 { 3826 {
2314 ev_tstamp waittime = 0.; 3827 ev_tstamp waittime = 0.;
2315 ev_tstamp sleeptime = 0.; 3828 ev_tstamp sleeptime = 0.;
2316 3829
3830 /* remember old timestamp for io_blocktime calculation */
3831 ev_tstamp prev_mn_now = mn_now;
3832
3833 /* update time to cancel out callback processing overhead */
3834 time_update (EV_A_ EV_TS_CONST (EV_TSTAMP_HUGE));
3835
3836 /* from now on, we want a pipe-wake-up */
3837 pipe_write_wanted = 1;
3838
3839 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3840
2317 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3841 if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2318 { 3842 {
2319 /* remember old timestamp for io_blocktime calculation */
2320 ev_tstamp prev_mn_now = mn_now;
2321
2322 /* update time to cancel out callback processing overhead */
2323 time_update (EV_A_ 1e100);
2324
2325 waittime = MAX_BLOCKTIME; 3843 waittime = EV_TS_CONST (MAX_BLOCKTIME);
2326 3844
2327 if (timercnt) 3845 if (timercnt)
2328 { 3846 {
2329 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3847 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2330 if (waittime > to) waittime = to; 3848 if (waittime > to) waittime = to;
2331 } 3849 }
2332 3850
2333#if EV_PERIODIC_ENABLE 3851#if EV_PERIODIC_ENABLE
2334 if (periodiccnt) 3852 if (periodiccnt)
2335 { 3853 {
2336 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3854 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2337 if (waittime > to) waittime = to; 3855 if (waittime > to) waittime = to;
2338 } 3856 }
2339#endif 3857#endif
2340 3858
2341 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3859 /* don't let timeouts decrease the waittime below timeout_blocktime */
2342 if (expect_false (waittime < timeout_blocktime)) 3860 if (ecb_expect_false (waittime < timeout_blocktime))
2343 waittime = timeout_blocktime; 3861 waittime = timeout_blocktime;
2344 3862
3863 /* now there are two more special cases left, either we have
3864 * already-expired timers, so we should not sleep, or we have timers
3865 * that expire very soon, in which case we need to weait for a minimum
3866 * amount of time for some event loop backends
3867 */
3868 if (ecb_expect_false (waittime < backend_mintime))
3869 waittime = waittime <= EV_TS_CONST (0.)
3870 ? EV_TS_CONST (0.)
3871 : backend_mintime;
3872
2345 /* extra check because io_blocktime is commonly 0 */ 3873 /* extra check because io_blocktime is commonly 0 */
2346 if (expect_false (io_blocktime)) 3874 if (ecb_expect_false (io_blocktime))
2347 { 3875 {
2348 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3876 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2349 3877
2350 if (sleeptime > waittime - backend_fudge) 3878 if (sleeptime > waittime - backend_mintime)
2351 sleeptime = waittime - backend_fudge; 3879 sleeptime = waittime - backend_mintime;
2352 3880
2353 if (expect_true (sleeptime > 0.)) 3881 if (ecb_expect_true (sleeptime > EV_TS_CONST (0.)))
2354 { 3882 {
2355 ev_sleep (sleeptime); 3883 ev_sleep (sleeptime);
2356 waittime -= sleeptime; 3884 waittime -= sleeptime;
2357 } 3885 }
2358 } 3886 }
2359 } 3887 }
2360 3888
2361#if EV_MINIMAL < 2 3889#if EV_FEATURE_API
2362 ++loop_count; 3890 ++loop_count;
2363#endif 3891#endif
2364 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3892 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2365 backend_poll (EV_A_ waittime); 3893 backend_poll (EV_A_ waittime);
2366 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 3894 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3895
3896 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3897
3898 ECB_MEMORY_FENCE_ACQUIRE;
3899 if (pipe_write_skipped)
3900 {
3901 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3902 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3903 }
2367 3904
2368 /* update ev_rt_now, do magic */ 3905 /* update ev_rt_now, do magic */
2369 time_update (EV_A_ waittime + sleeptime); 3906 time_update (EV_A_ waittime + sleeptime);
2370 } 3907 }
2371 3908
… …
2378#if EV_IDLE_ENABLE 3915#if EV_IDLE_ENABLE
2379 /* queue idle watchers unless other events are pending */ 3916 /* queue idle watchers unless other events are pending */
2380 idle_reify (EV_A); 3917 idle_reify (EV_A);
2381#endif 3918#endif
2382 3919
3920#if EV_CHECK_ENABLE
2383 /* queue check watchers, to be executed first */ 3921 /* queue check watchers, to be executed first */
2384 if (expect_false (checkcnt)) 3922 if (ecb_expect_false (checkcnt))
2385 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3923 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3924#endif
2386 3925
2387 EV_INVOKE_PENDING; 3926 EV_INVOKE_PENDING;
2388 } 3927 }
2389 while (expect_true ( 3928 while (ecb_expect_true (
2390 activecnt 3929 activecnt
2391 && !loop_done 3930 && !loop_done
2392 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3931 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2393 )); 3932 ));
2394 3933
2395 if (loop_done == EVUNLOOP_ONE) 3934 if (loop_done == EVBREAK_ONE)
2396 loop_done = EVUNLOOP_CANCEL; 3935 loop_done = EVBREAK_CANCEL;
2397 3936
2398#if EV_MINIMAL < 2 3937#if EV_FEATURE_API
2399 --loop_depth; 3938 --loop_depth;
2400#endif 3939#endif
2401}
2402 3940
3941 return activecnt;
3942}
3943
2403void 3944void
2404ev_unloop (EV_P_ int how) 3945ev_break (EV_P_ int how) EV_NOEXCEPT
2405{ 3946{
2406 loop_done = how; 3947 loop_done = how;
2407} 3948}
2408 3949
2409void 3950void
2410ev_ref (EV_P) 3951ev_ref (EV_P) EV_NOEXCEPT
2411{ 3952{
2412 ++activecnt; 3953 ++activecnt;
2413} 3954}
2414 3955
2415void 3956void
2416ev_unref (EV_P) 3957ev_unref (EV_P) EV_NOEXCEPT
2417{ 3958{
2418 --activecnt; 3959 --activecnt;
2419} 3960}
2420 3961
2421void 3962void
2422ev_now_update (EV_P) 3963ev_now_update (EV_P) EV_NOEXCEPT
2423{ 3964{
2424 time_update (EV_A_ 1e100); 3965 time_update (EV_A_ EV_TSTAMP_HUGE);
2425} 3966}
2426 3967
2427void 3968void
2428ev_suspend (EV_P) 3969ev_suspend (EV_P) EV_NOEXCEPT
2429{ 3970{
2430 ev_now_update (EV_A); 3971 ev_now_update (EV_A);
2431} 3972}
2432 3973
2433void 3974void
2434ev_resume (EV_P) 3975ev_resume (EV_P) EV_NOEXCEPT
2435{ 3976{
2436 ev_tstamp mn_prev = mn_now; 3977 ev_tstamp mn_prev = mn_now;
2437 3978
2438 ev_now_update (EV_A); 3979 ev_now_update (EV_A);
2439 timers_reschedule (EV_A_ mn_now - mn_prev); 3980 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2456inline_size void 3997inline_size void
2457wlist_del (WL *head, WL elem) 3998wlist_del (WL *head, WL elem)
2458{ 3999{
2459 while (*head) 4000 while (*head)
2460 { 4001 {
2461 if (expect_true (*head == elem)) 4002 if (ecb_expect_true (*head == elem))
2462 { 4003 {
2463 *head = elem->next; 4004 *head = elem->next;
2464 break; 4005 break;
2465 } 4006 }
2466 4007
… …
2478 w->pending = 0; 4019 w->pending = 0;
2479 } 4020 }
2480} 4021}
2481 4022
2482int 4023int
2483ev_clear_pending (EV_P_ void *w) 4024ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
2484{ 4025{
2485 W w_ = (W)w; 4026 W w_ = (W)w;
2486 int pending = w_->pending; 4027 int pending = w_->pending;
2487 4028
2488 if (expect_true (pending)) 4029 if (ecb_expect_true (pending))
2489 { 4030 {
2490 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 4031 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2491 p->w = (W)&pending_w; 4032 p->w = (W)&pending_w;
2492 w_->pending = 0; 4033 w_->pending = 0;
2493 return p->events; 4034 return p->events;
… …
2520 w->active = 0; 4061 w->active = 0;
2521} 4062}
2522 4063
2523/*****************************************************************************/ 4064/*****************************************************************************/
2524 4065
2525void noinline 4066ecb_noinline
4067void
2526ev_io_start (EV_P_ ev_io *w) 4068ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
2527{ 4069{
2528 int fd = w->fd; 4070 int fd = w->fd;
2529 4071
2530 if (expect_false (ev_is_active (w))) 4072 if (ecb_expect_false (ev_is_active (w)))
2531 return; 4073 return;
2532 4074
2533 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 4075 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2534 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 4076 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2535 4077
4078#if EV_VERIFY >= 2
4079 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
4080#endif
2536 EV_FREQUENT_CHECK; 4081 EV_FREQUENT_CHECK;
2537 4082
2538 ev_start (EV_A_ (W)w, 1); 4083 ev_start (EV_A_ (W)w, 1);
2539 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 4084 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
2540 wlist_add (&anfds[fd].head, (WL)w); 4085 wlist_add (&anfds[fd].head, (WL)w);
4086
4087 /* common bug, apparently */
4088 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
2541 4089
2542 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 4090 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2543 w->events &= ~EV__IOFDSET; 4091 w->events &= ~EV__IOFDSET;
2544 4092
2545 EV_FREQUENT_CHECK; 4093 EV_FREQUENT_CHECK;
2546} 4094}
2547 4095
2548void noinline 4096ecb_noinline
4097void
2549ev_io_stop (EV_P_ ev_io *w) 4098ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
2550{ 4099{
2551 clear_pending (EV_A_ (W)w); 4100 clear_pending (EV_A_ (W)w);
2552 if (expect_false (!ev_is_active (w))) 4101 if (ecb_expect_false (!ev_is_active (w)))
2553 return; 4102 return;
2554 4103
2555 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 4104 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2556 4105
4106#if EV_VERIFY >= 2
4107 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
4108#endif
2557 EV_FREQUENT_CHECK; 4109 EV_FREQUENT_CHECK;
2558 4110
2559 wlist_del (&anfds[w->fd].head, (WL)w); 4111 wlist_del (&anfds[w->fd].head, (WL)w);
2560 ev_stop (EV_A_ (W)w); 4112 ev_stop (EV_A_ (W)w);
2561 4113
2562 fd_change (EV_A_ w->fd, 1); 4114 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2563 4115
2564 EV_FREQUENT_CHECK; 4116 EV_FREQUENT_CHECK;
2565} 4117}
2566 4118
2567void noinline 4119ecb_noinline
4120void
2568ev_timer_start (EV_P_ ev_timer *w) 4121ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
2569{ 4122{
2570 if (expect_false (ev_is_active (w))) 4123 if (ecb_expect_false (ev_is_active (w)))
2571 return; 4124 return;
2572 4125
2573 ev_at (w) += mn_now; 4126 ev_at (w) += mn_now;
2574 4127
2575 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 4128 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2576 4129
2577 EV_FREQUENT_CHECK; 4130 EV_FREQUENT_CHECK;
2578 4131
2579 ++timercnt; 4132 ++timercnt;
2580 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 4133 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
2581 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 4134 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
2582 ANHE_w (timers [ev_active (w)]) = (WT)w; 4135 ANHE_w (timers [ev_active (w)]) = (WT)w;
2583 ANHE_at_cache (timers [ev_active (w)]); 4136 ANHE_at_cache (timers [ev_active (w)]);
2584 upheap (timers, ev_active (w)); 4137 upheap (timers, ev_active (w));
2585 4138
2586 EV_FREQUENT_CHECK; 4139 EV_FREQUENT_CHECK;
2587 4140
2588 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 4141 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2589} 4142}
2590 4143
2591void noinline 4144ecb_noinline
4145void
2592ev_timer_stop (EV_P_ ev_timer *w) 4146ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
2593{ 4147{
2594 clear_pending (EV_A_ (W)w); 4148 clear_pending (EV_A_ (W)w);
2595 if (expect_false (!ev_is_active (w))) 4149 if (ecb_expect_false (!ev_is_active (w)))
2596 return; 4150 return;
2597 4151
2598 EV_FREQUENT_CHECK; 4152 EV_FREQUENT_CHECK;
2599 4153
2600 { 4154 {
… …
2602 4156
2603 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 4157 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2604 4158
2605 --timercnt; 4159 --timercnt;
2606 4160
2607 if (expect_true (active < timercnt + HEAP0)) 4161 if (ecb_expect_true (active < timercnt + HEAP0))
2608 { 4162 {
2609 timers [active] = timers [timercnt + HEAP0]; 4163 timers [active] = timers [timercnt + HEAP0];
2610 adjustheap (timers, timercnt, active); 4164 adjustheap (timers, timercnt, active);
2611 } 4165 }
2612 } 4166 }
… …
2616 ev_stop (EV_A_ (W)w); 4170 ev_stop (EV_A_ (W)w);
2617 4171
2618 EV_FREQUENT_CHECK; 4172 EV_FREQUENT_CHECK;
2619} 4173}
2620 4174
2621void noinline 4175ecb_noinline
4176void
2622ev_timer_again (EV_P_ ev_timer *w) 4177ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
2623{ 4178{
2624 EV_FREQUENT_CHECK; 4179 EV_FREQUENT_CHECK;
4180
4181 clear_pending (EV_A_ (W)w);
2625 4182
2626 if (ev_is_active (w)) 4183 if (ev_is_active (w))
2627 { 4184 {
2628 if (w->repeat) 4185 if (w->repeat)
2629 { 4186 {
… …
2642 4199
2643 EV_FREQUENT_CHECK; 4200 EV_FREQUENT_CHECK;
2644} 4201}
2645 4202
2646ev_tstamp 4203ev_tstamp
2647ev_timer_remaining (EV_P_ ev_timer *w) 4204ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
2648{ 4205{
2649 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4206 return ev_at (w) - (ev_is_active (w) ? mn_now : EV_TS_CONST (0.));
2650} 4207}
2651 4208
2652#if EV_PERIODIC_ENABLE 4209#if EV_PERIODIC_ENABLE
2653void noinline 4210ecb_noinline
4211void
2654ev_periodic_start (EV_P_ ev_periodic *w) 4212ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
2655{ 4213{
2656 if (expect_false (ev_is_active (w))) 4214 if (ecb_expect_false (ev_is_active (w)))
2657 return; 4215 return;
2658 4216
2659 if (w->reschedule_cb) 4217 if (w->reschedule_cb)
2660 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4218 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2661 else if (w->interval) 4219 else if (w->interval)
2662 { 4220 {
2663 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 4221 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2664 /* this formula differs from the one in periodic_reify because we do not always round up */ 4222 periodic_recalc (EV_A_ w);
2665 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2666 } 4223 }
2667 else 4224 else
2668 ev_at (w) = w->offset; 4225 ev_at (w) = w->offset;
2669 4226
2670 EV_FREQUENT_CHECK; 4227 EV_FREQUENT_CHECK;
2671 4228
2672 ++periodiccnt; 4229 ++periodiccnt;
2673 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4230 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2674 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4231 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
2675 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4232 ANHE_w (periodics [ev_active (w)]) = (WT)w;
2676 ANHE_at_cache (periodics [ev_active (w)]); 4233 ANHE_at_cache (periodics [ev_active (w)]);
2677 upheap (periodics, ev_active (w)); 4234 upheap (periodics, ev_active (w));
2678 4235
2679 EV_FREQUENT_CHECK; 4236 EV_FREQUENT_CHECK;
2680 4237
2681 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4238 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2682} 4239}
2683 4240
2684void noinline 4241ecb_noinline
4242void
2685ev_periodic_stop (EV_P_ ev_periodic *w) 4243ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
2686{ 4244{
2687 clear_pending (EV_A_ (W)w); 4245 clear_pending (EV_A_ (W)w);
2688 if (expect_false (!ev_is_active (w))) 4246 if (ecb_expect_false (!ev_is_active (w)))
2689 return; 4247 return;
2690 4248
2691 EV_FREQUENT_CHECK; 4249 EV_FREQUENT_CHECK;
2692 4250
2693 { 4251 {
… …
2695 4253
2696 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 4254 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2697 4255
2698 --periodiccnt; 4256 --periodiccnt;
2699 4257
2700 if (expect_true (active < periodiccnt + HEAP0)) 4258 if (ecb_expect_true (active < periodiccnt + HEAP0))
2701 { 4259 {
2702 periodics [active] = periodics [periodiccnt + HEAP0]; 4260 periodics [active] = periodics [periodiccnt + HEAP0];
2703 adjustheap (periodics, periodiccnt, active); 4261 adjustheap (periodics, periodiccnt, active);
2704 } 4262 }
2705 } 4263 }
… …
2707 ev_stop (EV_A_ (W)w); 4265 ev_stop (EV_A_ (W)w);
2708 4266
2709 EV_FREQUENT_CHECK; 4267 EV_FREQUENT_CHECK;
2710} 4268}
2711 4269
2712void noinline 4270ecb_noinline
4271void
2713ev_periodic_again (EV_P_ ev_periodic *w) 4272ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
2714{ 4273{
2715 /* TODO: use adjustheap and recalculation */ 4274 /* TODO: use adjustheap and recalculation */
2716 ev_periodic_stop (EV_A_ w); 4275 ev_periodic_stop (EV_A_ w);
2717 ev_periodic_start (EV_A_ w); 4276 ev_periodic_start (EV_A_ w);
2718} 4277}
… …
2720 4279
2721#ifndef SA_RESTART 4280#ifndef SA_RESTART
2722# define SA_RESTART 0 4281# define SA_RESTART 0
2723#endif 4282#endif
2724 4283
2725void noinline 4284#if EV_SIGNAL_ENABLE
4285
4286ecb_noinline
4287void
2726ev_signal_start (EV_P_ ev_signal *w) 4288ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
2727{ 4289{
2728 if (expect_false (ev_is_active (w))) 4290 if (ecb_expect_false (ev_is_active (w)))
2729 return; 4291 return;
2730 4292
2731 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4293 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2732 4294
2733#if EV_MULTIPLICITY 4295#if EV_MULTIPLICITY
2734 assert (("libev: a signal must not be attached to two different loops", 4296 assert (("libev: a signal must not be attached to two different loops",
2735 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4297 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2736 4298
2737 signals [w->signum - 1].loop = EV_A; 4299 signals [w->signum - 1].loop = EV_A;
4300 ECB_MEMORY_FENCE_RELEASE;
2738#endif 4301#endif
2739 4302
2740 EV_FREQUENT_CHECK; 4303 EV_FREQUENT_CHECK;
2741 4304
2742#if EV_USE_SIGNALFD 4305#if EV_USE_SIGNALFD
… …
2789 sa.sa_handler = ev_sighandler; 4352 sa.sa_handler = ev_sighandler;
2790 sigfillset (&sa.sa_mask); 4353 sigfillset (&sa.sa_mask);
2791 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 4354 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2792 sigaction (w->signum, &sa, 0); 4355 sigaction (w->signum, &sa, 0);
2793 4356
4357 if (origflags & EVFLAG_NOSIGMASK)
4358 {
2794 sigemptyset (&sa.sa_mask); 4359 sigemptyset (&sa.sa_mask);
2795 sigaddset (&sa.sa_mask, w->signum); 4360 sigaddset (&sa.sa_mask, w->signum);
2796 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 4361 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
4362 }
2797#endif 4363#endif
2798 } 4364 }
2799 4365
2800 EV_FREQUENT_CHECK; 4366 EV_FREQUENT_CHECK;
2801} 4367}
2802 4368
2803void noinline 4369ecb_noinline
4370void
2804ev_signal_stop (EV_P_ ev_signal *w) 4371ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
2805{ 4372{
2806 clear_pending (EV_A_ (W)w); 4373 clear_pending (EV_A_ (W)w);
2807 if (expect_false (!ev_is_active (w))) 4374 if (ecb_expect_false (!ev_is_active (w)))
2808 return; 4375 return;
2809 4376
2810 EV_FREQUENT_CHECK; 4377 EV_FREQUENT_CHECK;
2811 4378
2812 wlist_del (&signals [w->signum - 1].head, (WL)w); 4379 wlist_del (&signals [w->signum - 1].head, (WL)w);
… …
2835 } 4402 }
2836 4403
2837 EV_FREQUENT_CHECK; 4404 EV_FREQUENT_CHECK;
2838} 4405}
2839 4406
4407#endif
4408
4409#if EV_CHILD_ENABLE
4410
2840void 4411void
2841ev_child_start (EV_P_ ev_child *w) 4412ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
2842{ 4413{
2843#if EV_MULTIPLICITY 4414#if EV_MULTIPLICITY
2844 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4415 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2845#endif 4416#endif
2846 if (expect_false (ev_is_active (w))) 4417 if (ecb_expect_false (ev_is_active (w)))
2847 return; 4418 return;
2848 4419
2849 EV_FREQUENT_CHECK; 4420 EV_FREQUENT_CHECK;
2850 4421
2851 ev_start (EV_A_ (W)w, 1); 4422 ev_start (EV_A_ (W)w, 1);
2852 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4423 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2853 4424
2854 EV_FREQUENT_CHECK; 4425 EV_FREQUENT_CHECK;
2855} 4426}
2856 4427
2857void 4428void
2858ev_child_stop (EV_P_ ev_child *w) 4429ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
2859{ 4430{
2860 clear_pending (EV_A_ (W)w); 4431 clear_pending (EV_A_ (W)w);
2861 if (expect_false (!ev_is_active (w))) 4432 if (ecb_expect_false (!ev_is_active (w)))
2862 return; 4433 return;
2863 4434
2864 EV_FREQUENT_CHECK; 4435 EV_FREQUENT_CHECK;
2865 4436
2866 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4437 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2867 ev_stop (EV_A_ (W)w); 4438 ev_stop (EV_A_ (W)w);
2868 4439
2869 EV_FREQUENT_CHECK; 4440 EV_FREQUENT_CHECK;
2870} 4441}
4442
4443#endif
2871 4444
2872#if EV_STAT_ENABLE 4445#if EV_STAT_ENABLE
2873 4446
2874# ifdef _WIN32 4447# ifdef _WIN32
2875# undef lstat 4448# undef lstat
… …
2878 4451
2879#define DEF_STAT_INTERVAL 5.0074891 4452#define DEF_STAT_INTERVAL 5.0074891
2880#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4453#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2881#define MIN_STAT_INTERVAL 0.1074891 4454#define MIN_STAT_INTERVAL 0.1074891
2882 4455
2883static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4456ecb_noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2884 4457
2885#if EV_USE_INOTIFY 4458#if EV_USE_INOTIFY
2886 4459
2887/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ 4460/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
2888# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4461# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2889 4462
2890static void noinline 4463ecb_noinline
4464static void
2891infy_add (EV_P_ ev_stat *w) 4465infy_add (EV_P_ ev_stat *w)
2892{ 4466{
2893 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); 4467 w->wd = inotify_add_watch (fs_fd, w->path,
4468 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4469 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4470 | IN_DONT_FOLLOW | IN_MASK_ADD);
2894 4471
2895 if (w->wd >= 0) 4472 if (w->wd >= 0)
2896 { 4473 {
2897 struct statfs sfs; 4474 struct statfs sfs;
2898 4475
… …
2902 4479
2903 if (!fs_2625) 4480 if (!fs_2625)
2904 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4481 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2905 else if (!statfs (w->path, &sfs) 4482 else if (!statfs (w->path, &sfs)
2906 && (sfs.f_type == 0x1373 /* devfs */ 4483 && (sfs.f_type == 0x1373 /* devfs */
4484 || sfs.f_type == 0x4006 /* fat */
4485 || sfs.f_type == 0x4d44 /* msdos */
2907 || sfs.f_type == 0xEF53 /* ext2/3 */ 4486 || sfs.f_type == 0xEF53 /* ext2/3 */
4487 || sfs.f_type == 0x72b6 /* jffs2 */
4488 || sfs.f_type == 0x858458f6 /* ramfs */
4489 || sfs.f_type == 0x5346544e /* ntfs */
2908 || sfs.f_type == 0x3153464a /* jfs */ 4490 || sfs.f_type == 0x3153464a /* jfs */
4491 || sfs.f_type == 0x9123683e /* btrfs */
2909 || sfs.f_type == 0x52654973 /* reiser3 */ 4492 || sfs.f_type == 0x52654973 /* reiser3 */
2910 || sfs.f_type == 0x01021994 /* tempfs */ 4493 || sfs.f_type == 0x01021994 /* tmpfs */
2911 || sfs.f_type == 0x58465342 /* xfs */)) 4494 || sfs.f_type == 0x58465342 /* xfs */))
2912 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4495 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
2913 else 4496 else
2914 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4497 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2915 } 4498 }
… …
2936 if (!pend || pend == path) 4519 if (!pend || pend == path)
2937 break; 4520 break;
2938 4521
2939 *pend = 0; 4522 *pend = 0;
2940 w->wd = inotify_add_watch (fs_fd, path, mask); 4523 w->wd = inotify_add_watch (fs_fd, path, mask);
2941 } 4524 }
2942 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 4525 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2943 } 4526 }
2944 } 4527 }
2945 4528
2946 if (w->wd >= 0) 4529 if (w->wd >= 0)
2947 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4530 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2948 4531
2949 /* now re-arm timer, if required */ 4532 /* now re-arm timer, if required */
2950 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4533 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2951 ev_timer_again (EV_A_ &w->timer); 4534 ev_timer_again (EV_A_ &w->timer);
2952 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4535 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2953} 4536}
2954 4537
2955static void noinline 4538ecb_noinline
4539static void
2956infy_del (EV_P_ ev_stat *w) 4540infy_del (EV_P_ ev_stat *w)
2957{ 4541{
2958 int slot; 4542 int slot;
2959 int wd = w->wd; 4543 int wd = w->wd;
2960 4544
2961 if (wd < 0) 4545 if (wd < 0)
2962 return; 4546 return;
2963 4547
2964 w->wd = -2; 4548 w->wd = -2;
2965 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 4549 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2966 wlist_del (&fs_hash [slot].head, (WL)w); 4550 wlist_del (&fs_hash [slot].head, (WL)w);
2967 4551
2968 /* remove this watcher, if others are watching it, they will rearm */ 4552 /* remove this watcher, if others are watching it, they will rearm */
2969 inotify_rm_watch (fs_fd, wd); 4553 inotify_rm_watch (fs_fd, wd);
2970} 4554}
2971 4555
2972static void noinline 4556ecb_noinline
4557static void
2973infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4558infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2974{ 4559{
2975 if (slot < 0) 4560 if (slot < 0)
2976 /* overflow, need to check for all hash slots */ 4561 /* overflow, need to check for all hash slots */
2977 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4562 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2978 infy_wd (EV_A_ slot, wd, ev); 4563 infy_wd (EV_A_ slot, wd, ev);
2979 else 4564 else
2980 { 4565 {
2981 WL w_; 4566 WL w_;
2982 4567
2983 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 4568 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2984 { 4569 {
2985 ev_stat *w = (ev_stat *)w_; 4570 ev_stat *w = (ev_stat *)w_;
2986 w_ = w_->next; /* lets us remove this watcher and all before it */ 4571 w_ = w_->next; /* lets us remove this watcher and all before it */
2987 4572
2988 if (w->wd == wd || wd == -1) 4573 if (w->wd == wd || wd == -1)
2989 { 4574 {
2990 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 4575 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2991 { 4576 {
2992 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4577 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2993 w->wd = -1; 4578 w->wd = -1;
2994 infy_add (EV_A_ w); /* re-add, no matter what */ 4579 infy_add (EV_A_ w); /* re-add, no matter what */
2995 } 4580 }
2996 4581
2997 stat_timer_cb (EV_A_ &w->timer, 0); 4582 stat_timer_cb (EV_A_ &w->timer, 0);
… …
3013 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4598 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3014 ofs += sizeof (struct inotify_event) + ev->len; 4599 ofs += sizeof (struct inotify_event) + ev->len;
3015 } 4600 }
3016} 4601}
3017 4602
3018inline_size unsigned int
3019ev_linux_version (void)
3020{
3021 struct utsname buf;
3022 unsigned int v;
3023 int i;
3024 char *p = buf.release;
3025
3026 if (uname (&buf))
3027 return 0;
3028
3029 for (i = 3+1; --i; )
3030 {
3031 unsigned int c = 0;
3032
3033 for (;;)
3034 {
3035 if (*p >= '0' && *p <= '9')
3036 c = c * 10 + *p++ - '0';
3037 else
3038 {
3039 p += *p == '.';
3040 break;
3041 }
3042 }
3043
3044 v = (v << 8) | c;
3045 }
3046
3047 return v;
3048}
3049
3050inline_size void 4603inline_size ecb_cold
4604void
3051ev_check_2625 (EV_P) 4605ev_check_2625 (EV_P)
3052{ 4606{
3053 /* kernels < 2.6.25 are borked 4607 /* kernels < 2.6.25 are borked
3054 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4608 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3055 */ 4609 */
… …
3060} 4614}
3061 4615
3062inline_size int 4616inline_size int
3063infy_newfd (void) 4617infy_newfd (void)
3064{ 4618{
3065#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4619#if defined IN_CLOEXEC && defined IN_NONBLOCK
3066 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4620 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3067 if (fd >= 0) 4621 if (fd >= 0)
3068 return fd; 4622 return fd;
3069#endif 4623#endif
3070 return inotify_init (); 4624 return inotify_init ();
… …
3111 ev_io_set (&fs_w, fs_fd, EV_READ); 4665 ev_io_set (&fs_w, fs_fd, EV_READ);
3112 ev_io_start (EV_A_ &fs_w); 4666 ev_io_start (EV_A_ &fs_w);
3113 ev_unref (EV_A); 4667 ev_unref (EV_A);
3114 } 4668 }
3115 4669
3116 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4670 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
3117 { 4671 {
3118 WL w_ = fs_hash [slot].head; 4672 WL w_ = fs_hash [slot].head;
3119 fs_hash [slot].head = 0; 4673 fs_hash [slot].head = 0;
3120 4674
3121 while (w_) 4675 while (w_)
… …
3145#else 4699#else
3146# define EV_LSTAT(p,b) lstat (p, b) 4700# define EV_LSTAT(p,b) lstat (p, b)
3147#endif 4701#endif
3148 4702
3149void 4703void
3150ev_stat_stat (EV_P_ ev_stat *w) 4704ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
3151{ 4705{
3152 if (lstat (w->path, &w->attr) < 0) 4706 if (lstat (w->path, &w->attr) < 0)
3153 w->attr.st_nlink = 0; 4707 w->attr.st_nlink = 0;
3154 else if (!w->attr.st_nlink) 4708 else if (!w->attr.st_nlink)
3155 w->attr.st_nlink = 1; 4709 w->attr.st_nlink = 1;
3156} 4710}
3157 4711
3158static void noinline 4712ecb_noinline
4713static void
3159stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4714stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3160{ 4715{
3161 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4716 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3162 4717
3163 ev_statdata prev = w->attr; 4718 ev_statdata prev = w->attr;
… …
3194 ev_feed_event (EV_A_ w, EV_STAT); 4749 ev_feed_event (EV_A_ w, EV_STAT);
3195 } 4750 }
3196} 4751}
3197 4752
3198void 4753void
3199ev_stat_start (EV_P_ ev_stat *w) 4754ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
3200{ 4755{
3201 if (expect_false (ev_is_active (w))) 4756 if (ecb_expect_false (ev_is_active (w)))
3202 return; 4757 return;
3203 4758
3204 ev_stat_stat (EV_A_ w); 4759 ev_stat_stat (EV_A_ w);
3205 4760
3206 if (w->interval < MIN_STAT_INTERVAL && w->interval) 4761 if (w->interval < MIN_STAT_INTERVAL && w->interval)
… …
3225 4780
3226 EV_FREQUENT_CHECK; 4781 EV_FREQUENT_CHECK;
3227} 4782}
3228 4783
3229void 4784void
3230ev_stat_stop (EV_P_ ev_stat *w) 4785ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
3231{ 4786{
3232 clear_pending (EV_A_ (W)w); 4787 clear_pending (EV_A_ (W)w);
3233 if (expect_false (!ev_is_active (w))) 4788 if (ecb_expect_false (!ev_is_active (w)))
3234 return; 4789 return;
3235 4790
3236 EV_FREQUENT_CHECK; 4791 EV_FREQUENT_CHECK;
3237 4792
3238#if EV_USE_INOTIFY 4793#if EV_USE_INOTIFY
… …
3251} 4806}
3252#endif 4807#endif
3253 4808
3254#if EV_IDLE_ENABLE 4809#if EV_IDLE_ENABLE
3255void 4810void
3256ev_idle_start (EV_P_ ev_idle *w) 4811ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
3257{ 4812{
3258 if (expect_false (ev_is_active (w))) 4813 if (ecb_expect_false (ev_is_active (w)))
3259 return; 4814 return;
3260 4815
3261 pri_adjust (EV_A_ (W)w); 4816 pri_adjust (EV_A_ (W)w);
3262 4817
3263 EV_FREQUENT_CHECK; 4818 EV_FREQUENT_CHECK;
… …
3266 int active = ++idlecnt [ABSPRI (w)]; 4821 int active = ++idlecnt [ABSPRI (w)];
3267 4822
3268 ++idleall; 4823 ++idleall;
3269 ev_start (EV_A_ (W)w, active); 4824 ev_start (EV_A_ (W)w, active);
3270 4825
3271 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 4826 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
3272 idles [ABSPRI (w)][active - 1] = w; 4827 idles [ABSPRI (w)][active - 1] = w;
3273 } 4828 }
3274 4829
3275 EV_FREQUENT_CHECK; 4830 EV_FREQUENT_CHECK;
3276} 4831}
3277 4832
3278void 4833void
3279ev_idle_stop (EV_P_ ev_idle *w) 4834ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
3280{ 4835{
3281 clear_pending (EV_A_ (W)w); 4836 clear_pending (EV_A_ (W)w);
3282 if (expect_false (!ev_is_active (w))) 4837 if (ecb_expect_false (!ev_is_active (w)))
3283 return; 4838 return;
3284 4839
3285 EV_FREQUENT_CHECK; 4840 EV_FREQUENT_CHECK;
3286 4841
3287 { 4842 {
… …
3296 4851
3297 EV_FREQUENT_CHECK; 4852 EV_FREQUENT_CHECK;
3298} 4853}
3299#endif 4854#endif
3300 4855
4856#if EV_PREPARE_ENABLE
3301void 4857void
3302ev_prepare_start (EV_P_ ev_prepare *w) 4858ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
3303{ 4859{
3304 if (expect_false (ev_is_active (w))) 4860 if (ecb_expect_false (ev_is_active (w)))
3305 return; 4861 return;
3306 4862
3307 EV_FREQUENT_CHECK; 4863 EV_FREQUENT_CHECK;
3308 4864
3309 ev_start (EV_A_ (W)w, ++preparecnt); 4865 ev_start (EV_A_ (W)w, ++preparecnt);
3310 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4866 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
3311 prepares [preparecnt - 1] = w; 4867 prepares [preparecnt - 1] = w;
3312 4868
3313 EV_FREQUENT_CHECK; 4869 EV_FREQUENT_CHECK;
3314} 4870}
3315 4871
3316void 4872void
3317ev_prepare_stop (EV_P_ ev_prepare *w) 4873ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
3318{ 4874{
3319 clear_pending (EV_A_ (W)w); 4875 clear_pending (EV_A_ (W)w);
3320 if (expect_false (!ev_is_active (w))) 4876 if (ecb_expect_false (!ev_is_active (w)))
3321 return; 4877 return;
3322 4878
3323 EV_FREQUENT_CHECK; 4879 EV_FREQUENT_CHECK;
3324 4880
3325 { 4881 {
… …
3331 4887
3332 ev_stop (EV_A_ (W)w); 4888 ev_stop (EV_A_ (W)w);
3333 4889
3334 EV_FREQUENT_CHECK; 4890 EV_FREQUENT_CHECK;
3335} 4891}
4892#endif
3336 4893
4894#if EV_CHECK_ENABLE
3337void 4895void
3338ev_check_start (EV_P_ ev_check *w) 4896ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
3339{ 4897{
3340 if (expect_false (ev_is_active (w))) 4898 if (ecb_expect_false (ev_is_active (w)))
3341 return; 4899 return;
3342 4900
3343 EV_FREQUENT_CHECK; 4901 EV_FREQUENT_CHECK;
3344 4902
3345 ev_start (EV_A_ (W)w, ++checkcnt); 4903 ev_start (EV_A_ (W)w, ++checkcnt);
3346 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 4904 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
3347 checks [checkcnt - 1] = w; 4905 checks [checkcnt - 1] = w;
3348 4906
3349 EV_FREQUENT_CHECK; 4907 EV_FREQUENT_CHECK;
3350} 4908}
3351 4909
3352void 4910void
3353ev_check_stop (EV_P_ ev_check *w) 4911ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
3354{ 4912{
3355 clear_pending (EV_A_ (W)w); 4913 clear_pending (EV_A_ (W)w);
3356 if (expect_false (!ev_is_active (w))) 4914 if (ecb_expect_false (!ev_is_active (w)))
3357 return; 4915 return;
3358 4916
3359 EV_FREQUENT_CHECK; 4917 EV_FREQUENT_CHECK;
3360 4918
3361 { 4919 {
… …
3367 4925
3368 ev_stop (EV_A_ (W)w); 4926 ev_stop (EV_A_ (W)w);
3369 4927
3370 EV_FREQUENT_CHECK; 4928 EV_FREQUENT_CHECK;
3371} 4929}
4930#endif
3372 4931
3373#if EV_EMBED_ENABLE 4932#if EV_EMBED_ENABLE
3374void noinline 4933ecb_noinline
4934void
3375ev_embed_sweep (EV_P_ ev_embed *w) 4935ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
3376{ 4936{
3377 ev_loop (w->other, EVLOOP_NONBLOCK); 4937 ev_run (w->other, EVRUN_NOWAIT);
3378} 4938}
3379 4939
3380static void 4940static void
3381embed_io_cb (EV_P_ ev_io *io, int revents) 4941embed_io_cb (EV_P_ ev_io *io, int revents)
3382{ 4942{
3383 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4943 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3384 4944
3385 if (ev_cb (w)) 4945 if (ev_cb (w))
3386 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4946 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3387 else 4947 else
3388 ev_loop (w->other, EVLOOP_NONBLOCK); 4948 ev_run (w->other, EVRUN_NOWAIT);
3389} 4949}
3390 4950
3391static void 4951static void
3392embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4952embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3393{ 4953{
… …
3397 EV_P = w->other; 4957 EV_P = w->other;
3398 4958
3399 while (fdchangecnt) 4959 while (fdchangecnt)
3400 { 4960 {
3401 fd_reify (EV_A); 4961 fd_reify (EV_A);
3402 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4962 ev_run (EV_A_ EVRUN_NOWAIT);
3403 } 4963 }
3404 } 4964 }
3405} 4965}
3406 4966
3407static void 4967static void
… …
3413 4973
3414 { 4974 {
3415 EV_P = w->other; 4975 EV_P = w->other;
3416 4976
3417 ev_loop_fork (EV_A); 4977 ev_loop_fork (EV_A);
3418 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4978 ev_run (EV_A_ EVRUN_NOWAIT);
3419 } 4979 }
3420 4980
3421 ev_embed_start (EV_A_ w); 4981 ev_embed_start (EV_A_ w);
3422} 4982}
3423 4983
… …
3428 ev_idle_stop (EV_A_ idle); 4988 ev_idle_stop (EV_A_ idle);
3429} 4989}
3430#endif 4990#endif
3431 4991
3432void 4992void
3433ev_embed_start (EV_P_ ev_embed *w) 4993ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
3434{ 4994{
3435 if (expect_false (ev_is_active (w))) 4995 if (ecb_expect_false (ev_is_active (w)))
3436 return; 4996 return;
3437 4997
3438 { 4998 {
3439 EV_P = w->other; 4999 EV_P = w->other;
3440 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 5000 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
… …
3459 5019
3460 EV_FREQUENT_CHECK; 5020 EV_FREQUENT_CHECK;
3461} 5021}
3462 5022
3463void 5023void
3464ev_embed_stop (EV_P_ ev_embed *w) 5024ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
3465{ 5025{
3466 clear_pending (EV_A_ (W)w); 5026 clear_pending (EV_A_ (W)w);
3467 if (expect_false (!ev_is_active (w))) 5027 if (ecb_expect_false (!ev_is_active (w)))
3468 return; 5028 return;
3469 5029
3470 EV_FREQUENT_CHECK; 5030 EV_FREQUENT_CHECK;
3471 5031
3472 ev_io_stop (EV_A_ &w->io); 5032 ev_io_stop (EV_A_ &w->io);
… …
3479} 5039}
3480#endif 5040#endif
3481 5041
3482#if EV_FORK_ENABLE 5042#if EV_FORK_ENABLE
3483void 5043void
3484ev_fork_start (EV_P_ ev_fork *w) 5044ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
3485{ 5045{
3486 if (expect_false (ev_is_active (w))) 5046 if (ecb_expect_false (ev_is_active (w)))
3487 return; 5047 return;
3488 5048
3489 EV_FREQUENT_CHECK; 5049 EV_FREQUENT_CHECK;
3490 5050
3491 ev_start (EV_A_ (W)w, ++forkcnt); 5051 ev_start (EV_A_ (W)w, ++forkcnt);
3492 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 5052 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
3493 forks [forkcnt - 1] = w; 5053 forks [forkcnt - 1] = w;
3494 5054
3495 EV_FREQUENT_CHECK; 5055 EV_FREQUENT_CHECK;
3496} 5056}
3497 5057
3498void 5058void
3499ev_fork_stop (EV_P_ ev_fork *w) 5059ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
3500{ 5060{
3501 clear_pending (EV_A_ (W)w); 5061 clear_pending (EV_A_ (W)w);
3502 if (expect_false (!ev_is_active (w))) 5062 if (ecb_expect_false (!ev_is_active (w)))
3503 return; 5063 return;
3504 5064
3505 EV_FREQUENT_CHECK; 5065 EV_FREQUENT_CHECK;
3506 5066
3507 { 5067 {
… …
3515 5075
3516 EV_FREQUENT_CHECK; 5076 EV_FREQUENT_CHECK;
3517} 5077}
3518#endif 5078#endif
3519 5079
5080#if EV_CLEANUP_ENABLE
5081void
5082ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
5083{
5084 if (ecb_expect_false (ev_is_active (w)))
5085 return;
5086
5087 EV_FREQUENT_CHECK;
5088
5089 ev_start (EV_A_ (W)w, ++cleanupcnt);
5090 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
5091 cleanups [cleanupcnt - 1] = w;
5092
5093 /* cleanup watchers should never keep a refcount on the loop */
5094 ev_unref (EV_A);
5095 EV_FREQUENT_CHECK;
5096}
5097
5098void
5099ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
5100{
5101 clear_pending (EV_A_ (W)w);
5102 if (ecb_expect_false (!ev_is_active (w)))
5103 return;
5104
5105 EV_FREQUENT_CHECK;
5106 ev_ref (EV_A);
5107
5108 {
5109 int active = ev_active (w);
5110
5111 cleanups [active - 1] = cleanups [--cleanupcnt];
5112 ev_active (cleanups [active - 1]) = active;
5113 }
5114
5115 ev_stop (EV_A_ (W)w);
5116
5117 EV_FREQUENT_CHECK;
5118}
5119#endif
5120
3520#if EV_ASYNC_ENABLE 5121#if EV_ASYNC_ENABLE
3521void 5122void
3522ev_async_start (EV_P_ ev_async *w) 5123ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
3523{ 5124{
3524 if (expect_false (ev_is_active (w))) 5125 if (ecb_expect_false (ev_is_active (w)))
3525 return; 5126 return;
3526 5127
5128 w->sent = 0;
5129
3527 evpipe_init (EV_A); 5130 evpipe_init (EV_A);
3528 5131
3529 EV_FREQUENT_CHECK; 5132 EV_FREQUENT_CHECK;
3530 5133
3531 ev_start (EV_A_ (W)w, ++asynccnt); 5134 ev_start (EV_A_ (W)w, ++asynccnt);
3532 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 5135 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
3533 asyncs [asynccnt - 1] = w; 5136 asyncs [asynccnt - 1] = w;
3534 5137
3535 EV_FREQUENT_CHECK; 5138 EV_FREQUENT_CHECK;
3536} 5139}
3537 5140
3538void 5141void
3539ev_async_stop (EV_P_ ev_async *w) 5142ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
3540{ 5143{
3541 clear_pending (EV_A_ (W)w); 5144 clear_pending (EV_A_ (W)w);
3542 if (expect_false (!ev_is_active (w))) 5145 if (ecb_expect_false (!ev_is_active (w)))
3543 return; 5146 return;
3544 5147
3545 EV_FREQUENT_CHECK; 5148 EV_FREQUENT_CHECK;
3546 5149
3547 { 5150 {
… …
3555 5158
3556 EV_FREQUENT_CHECK; 5159 EV_FREQUENT_CHECK;
3557} 5160}
3558 5161
3559void 5162void
3560ev_async_send (EV_P_ ev_async *w) 5163ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
3561{ 5164{
3562 w->sent = 1; 5165 w->sent = 1;
3563 evpipe_write (EV_A_ &async_pending); 5166 evpipe_write (EV_A_ &async_pending);
3564} 5167}
3565#endif 5168#endif
… …
3602 5205
3603 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5206 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3604} 5207}
3605 5208
3606void 5209void
3607ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 5210ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
3608{ 5211{
3609 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5212 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3610
3611 if (expect_false (!once))
3612 {
3613 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
3614 return;
3615 }
3616 5213
3617 once->cb = cb; 5214 once->cb = cb;
3618 once->arg = arg; 5215 once->arg = arg;
3619 5216
3620 ev_init (&once->io, once_cb_io); 5217 ev_init (&once->io, once_cb_io);
… …
3633} 5230}
3634 5231
3635/*****************************************************************************/ 5232/*****************************************************************************/
3636 5233
3637#if EV_WALK_ENABLE 5234#if EV_WALK_ENABLE
5235ecb_cold
3638void 5236void
3639ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 5237ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
3640{ 5238{
3641 int i, j; 5239 int i, j;
3642 ev_watcher_list *wl, *wn; 5240 ev_watcher_list *wl, *wn;
3643 5241
3644 if (types & (EV_IO | EV_EMBED)) 5242 if (types & (EV_IO | EV_EMBED))
… …
3687 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 5285 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3688#endif 5286#endif
3689 5287
3690#if EV_IDLE_ENABLE 5288#if EV_IDLE_ENABLE
3691 if (types & EV_IDLE) 5289 if (types & EV_IDLE)
3692 for (j = NUMPRI; i--; ) 5290 for (j = NUMPRI; j--; )
3693 for (i = idlecnt [j]; i--; ) 5291 for (i = idlecnt [j]; i--; )
3694 cb (EV_A_ EV_IDLE, idles [j][i]); 5292 cb (EV_A_ EV_IDLE, idles [j][i]);
3695#endif 5293#endif
3696 5294
3697#if EV_FORK_ENABLE 5295#if EV_FORK_ENABLE
… …
3705 if (types & EV_ASYNC) 5303 if (types & EV_ASYNC)
3706 for (i = asynccnt; i--; ) 5304 for (i = asynccnt; i--; )
3707 cb (EV_A_ EV_ASYNC, asyncs [i]); 5305 cb (EV_A_ EV_ASYNC, asyncs [i]);
3708#endif 5306#endif
3709 5307
5308#if EV_PREPARE_ENABLE
3710 if (types & EV_PREPARE) 5309 if (types & EV_PREPARE)
3711 for (i = preparecnt; i--; ) 5310 for (i = preparecnt; i--; )
3712#if EV_EMBED_ENABLE 5311# if EV_EMBED_ENABLE
3713 if (ev_cb (prepares [i]) != embed_prepare_cb) 5312 if (ev_cb (prepares [i]) != embed_prepare_cb)
3714#endif 5313# endif
3715 cb (EV_A_ EV_PREPARE, prepares [i]); 5314 cb (EV_A_ EV_PREPARE, prepares [i]);
5315#endif
3716 5316
5317#if EV_CHECK_ENABLE
3717 if (types & EV_CHECK) 5318 if (types & EV_CHECK)
3718 for (i = checkcnt; i--; ) 5319 for (i = checkcnt; i--; )
3719 cb (EV_A_ EV_CHECK, checks [i]); 5320 cb (EV_A_ EV_CHECK, checks [i]);
5321#endif
3720 5322
5323#if EV_SIGNAL_ENABLE
3721 if (types & EV_SIGNAL) 5324 if (types & EV_SIGNAL)
3722 for (i = 0; i < EV_NSIG - 1; ++i) 5325 for (i = 0; i < EV_NSIG - 1; ++i)
3723 for (wl = signals [i].head; wl; ) 5326 for (wl = signals [i].head; wl; )
3724 { 5327 {
3725 wn = wl->next; 5328 wn = wl->next;
3726 cb (EV_A_ EV_SIGNAL, wl); 5329 cb (EV_A_ EV_SIGNAL, wl);
3727 wl = wn; 5330 wl = wn;
3728 } 5331 }
5332#endif
3729 5333
5334#if EV_CHILD_ENABLE
3730 if (types & EV_CHILD) 5335 if (types & EV_CHILD)
3731 for (i = EV_PID_HASHSIZE; i--; ) 5336 for (i = (EV_PID_HASHSIZE); i--; )
3732 for (wl = childs [i]; wl; ) 5337 for (wl = childs [i]; wl; )
3733 { 5338 {
3734 wn = wl->next; 5339 wn = wl->next;
3735 cb (EV_A_ EV_CHILD, wl); 5340 cb (EV_A_ EV_CHILD, wl);
3736 wl = wn; 5341 wl = wn;
3737 } 5342 }
5343#endif
3738/* EV_STAT 0x00001000 /* stat data changed */ 5344/* EV_STAT 0x00001000 /* stat data changed */
3739/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 5345/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3740} 5346}
3741#endif 5347#endif
3742 5348
3743#if EV_MULTIPLICITY 5349#if EV_MULTIPLICITY
3744 #include "ev_wrap.h" 5350 #include "ev_wrap.h"
3745#endif 5351#endif
3746 5352
3747#ifdef __cplusplus
3748}
3749#endif
3750

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