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Comparing libev/ev.c (file contents):
Revision 1.331 by root, Tue Mar 9 08:55:03 2010 UTC vs.
Revision 1.511 by root, Fri Nov 22 14:32:13 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/fs.h>
454# ifndef RWF_SYNC
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 */
577 1876
578 if (size) 1877 if (size)
579 return realloc (ptr, size); 1878 return realloc (ptr, size);
580 1879
581 free (ptr); 1880 free (ptr);
582 return 0; 1881 return 0;
583} 1882}
584 1883
585static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1884static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
586 1885
1886ecb_cold
587void 1887void
588ev_set_allocator (void *(*cb)(void *ptr, long size)) 1888ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
589{ 1889{
590 alloc = cb; 1890 alloc = cb;
591} 1891}
592 1892
593inline_speed void * 1893inline_speed void *
… …
596 ptr = alloc (ptr, size); 1896 ptr = alloc (ptr, size);
597 1897
598 if (!ptr && size) 1898 if (!ptr && size)
599 { 1899 {
600#if EV_AVOID_STDIO 1900#if EV_AVOID_STDIO
601 ev_printerr ("libev: memory allocation failed, aborting.\n"); 1901 ev_printerr ("(libev) memory allocation failed, aborting.\n");
602#else 1902#else
603 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1903 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
604#endif 1904#endif
605 abort (); 1905 abort ();
606 } 1906 }
607 1907
608 return ptr; 1908 return ptr;
… …
620typedef struct 1920typedef struct
621{ 1921{
622 WL head; 1922 WL head;
623 unsigned char events; /* the events watched for */ 1923 unsigned char events; /* the events watched for */
624 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) */
625 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 */
626 unsigned char unused; 1926 unsigned char eflags; /* flags field for use by backends */
627#if EV_USE_EPOLL 1927#if EV_USE_EPOLL
628 unsigned int egen; /* generation counter to counter epoll bugs */ 1928 unsigned int egen; /* generation counter to counter epoll bugs */
629#endif 1929#endif
630#if EV_SELECT_IS_WINSOCKET 1930#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
631 SOCKET handle; 1931 SOCKET handle;
1932#endif
1933#if EV_USE_IOCP
1934 OVERLAPPED or, ow;
632#endif 1935#endif
633} ANFD; 1936} ANFD;
634 1937
635/* stores the pending event set for a given watcher */ 1938/* stores the pending event set for a given watcher */
636typedef struct 1939typedef struct
… …
678 #undef VAR 1981 #undef VAR
679 }; 1982 };
680 #include "ev_wrap.h" 1983 #include "ev_wrap.h"
681 1984
682 static struct ev_loop default_loop_struct; 1985 static struct ev_loop default_loop_struct;
683 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 */
684 1987
685#else 1988#else
686 1989
687 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 */
688 #define VAR(name,decl) static decl; 1991 #define VAR(name,decl) static decl;
689 #include "ev_vars.h" 1992 #include "ev_vars.h"
690 #undef VAR 1993 #undef VAR
691 1994
692 static int ev_default_loop_ptr; 1995 static int ev_default_loop_ptr;
693 1996
694#endif 1997#endif
695 1998
696#if EV_MINIMAL < 2 1999#if EV_FEATURE_API
697# 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)
698# 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)
699# define EV_INVOKE_PENDING invoke_cb (EV_A) 2002# define EV_INVOKE_PENDING invoke_cb (EV_A)
700#else 2003#else
701# define EV_RELEASE_CB (void)0 2004# define EV_RELEASE_CB (void)0
702# define EV_ACQUIRE_CB (void)0 2005# define EV_ACQUIRE_CB (void)0
703# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 2006# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
704#endif 2007#endif
705 2008
706#define EVUNLOOP_RECURSE 0x80 2009#define EVBREAK_RECURSE 0x80
707 2010
708/*****************************************************************************/ 2011/*****************************************************************************/
709 2012
710#ifndef EV_HAVE_EV_TIME 2013#ifndef EV_HAVE_EV_TIME
711ev_tstamp 2014ev_tstamp
712ev_time (void) 2015ev_time (void) EV_NOEXCEPT
713{ 2016{
714#if EV_USE_REALTIME 2017#if EV_USE_REALTIME
715 if (expect_true (have_realtime)) 2018 if (ecb_expect_true (have_realtime))
716 { 2019 {
717 struct timespec ts; 2020 struct timespec ts;
718 clock_gettime (CLOCK_REALTIME, &ts); 2021 clock_gettime (CLOCK_REALTIME, &ts);
719 return ts.tv_sec + ts.tv_nsec * 1e-9; 2022 return EV_TS_GET (ts);
720 } 2023 }
721#endif 2024#endif
722 2025
2026 {
723 struct timeval tv; 2027 struct timeval tv;
724 gettimeofday (&tv, 0); 2028 gettimeofday (&tv, 0);
725 return tv.tv_sec + tv.tv_usec * 1e-6; 2029 return EV_TV_GET (tv);
2030 }
726} 2031}
727#endif 2032#endif
728 2033
729inline_size ev_tstamp 2034inline_size ev_tstamp
730get_clock (void) 2035get_clock (void)
731{ 2036{
732#if EV_USE_MONOTONIC 2037#if EV_USE_MONOTONIC
733 if (expect_true (have_monotonic)) 2038 if (ecb_expect_true (have_monotonic))
734 { 2039 {
735 struct timespec ts; 2040 struct timespec ts;
736 clock_gettime (CLOCK_MONOTONIC, &ts); 2041 clock_gettime (CLOCK_MONOTONIC, &ts);
737 return ts.tv_sec + ts.tv_nsec * 1e-9; 2042 return EV_TS_GET (ts);
738 } 2043 }
739#endif 2044#endif
740 2045
741 return ev_time (); 2046 return ev_time ();
742} 2047}
743 2048
744#if EV_MULTIPLICITY 2049#if EV_MULTIPLICITY
745ev_tstamp 2050ev_tstamp
746ev_now (EV_P) 2051ev_now (EV_P) EV_NOEXCEPT
747{ 2052{
748 return ev_rt_now; 2053 return ev_rt_now;
749} 2054}
750#endif 2055#endif
751 2056
752void 2057void
753ev_sleep (ev_tstamp delay) 2058ev_sleep (ev_tstamp delay) EV_NOEXCEPT
754{ 2059{
755 if (delay > 0.) 2060 if (delay > EV_TS_CONST (0.))
756 { 2061 {
757#if EV_USE_NANOSLEEP 2062#if EV_USE_NANOSLEEP
758 struct timespec ts; 2063 struct timespec ts;
759 2064
760 ts.tv_sec = (time_t)delay; 2065 EV_TS_SET (ts, delay);
761 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
762
763 nanosleep (&ts, 0); 2066 nanosleep (&ts, 0);
764#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) */
765 Sleep ((unsigned long)(delay * 1e3)); 2070 Sleep ((unsigned long)(EV_TS_TO_MSEC (delay)));
766#else 2071#else
767 struct timeval tv; 2072 struct timeval tv;
768
769 tv.tv_sec = (time_t)delay;
770 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
771 2073
772 /* 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 */
773 /* something not guaranteed by newer posix versions, but guaranteed */ 2075 /* something not guaranteed by newer posix versions, but guaranteed */
774 /* by older ones */ 2076 /* by older ones */
2077 EV_TV_SET (tv, delay);
775 select (0, 0, 0, 0, &tv); 2078 select (0, 0, 0, 0, &tv);
776#endif 2079#endif
777 } 2080 }
778} 2081}
779 2082
780/*****************************************************************************/ 2083/*****************************************************************************/
781 2084
782#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 */
783 2086
784/* find a suitable new size for the given array, */ 2087/* find a suitable new size for the given array, */
785/* hopefully by rounding to a ncie-to-malloc size */ 2088/* hopefully by rounding to a nice-to-malloc size */
786inline_size int 2089inline_size int
787array_nextsize (int elem, int cur, int cnt) 2090array_nextsize (int elem, int cur, int cnt)
788{ 2091{
789 int ncur = cur + 1; 2092 int ncur = cur + 1;
790 2093
791 do 2094 do
792 ncur <<= 1; 2095 ncur <<= 1;
793 while (cnt > ncur); 2096 while (cnt > ncur);
794 2097
795 /* 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 */
796 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 2099 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
797 { 2100 {
798 ncur *= elem; 2101 ncur *= elem;
799 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);
800 ncur = ncur - sizeof (void *) * 4; 2103 ncur = ncur - sizeof (void *) * 4;
… …
802 } 2105 }
803 2106
804 return ncur; 2107 return ncur;
805} 2108}
806 2109
807static noinline void * 2110ecb_noinline ecb_cold
2111static void *
808array_realloc (int elem, void *base, int *cur, int cnt) 2112array_realloc (int elem, void *base, int *cur, int cnt)
809{ 2113{
810 *cur = array_nextsize (elem, *cur, cnt); 2114 *cur = array_nextsize (elem, *cur, cnt);
811 return ev_realloc (base, elem * *cur); 2115 return ev_realloc (base, elem * *cur);
812} 2116}
813 2117
2118#define array_needsize_noinit(base,offset,count)
2119
814#define array_init_zero(base,count) \ 2120#define array_needsize_zerofill(base,offset,count) \
815 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 2121 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
816 2122
817#define array_needsize(type,base,cur,cnt,init) \ 2123#define array_needsize(type,base,cur,cnt,init) \
818 if (expect_false ((cnt) > (cur))) \ 2124 if (ecb_expect_false ((cnt) > (cur))) \
819 { \ 2125 { \
820 int ocur_ = (cur); \ 2126 ecb_unused int ocur_ = (cur); \
821 (base) = (type *)array_realloc \ 2127 (base) = (type *)array_realloc \
822 (sizeof (type), (base), &(cur), (cnt)); \ 2128 (sizeof (type), (base), &(cur), (cnt)); \
823 init ((base) + (ocur_), (cur) - ocur_); \ 2129 init ((base), ocur_, ((cur) - ocur_)); \
824 } 2130 }
825 2131
826#if 0 2132#if 0
827#define array_slim(type,stem) \ 2133#define array_slim(type,stem) \
828 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2134 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
… …
837 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
838 2144
839/*****************************************************************************/ 2145/*****************************************************************************/
840 2146
841/* dummy callback for pending events */ 2147/* dummy callback for pending events */
842static void noinline 2148ecb_noinline
2149static void
843pendingcb (EV_P_ ev_prepare *w, int revents) 2150pendingcb (EV_P_ ev_prepare *w, int revents)
844{ 2151{
845} 2152}
846 2153
847void noinline 2154ecb_noinline
2155void
848ev_feed_event (EV_P_ void *w, int revents) 2156ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
849{ 2157{
850 W w_ = (W)w; 2158 W w_ = (W)w;
851 int pri = ABSPRI (w_); 2159 int pri = ABSPRI (w_);
852 2160
853 if (expect_false (w_->pending)) 2161 if (ecb_expect_false (w_->pending))
854 pendings [pri][w_->pending - 1].events |= revents; 2162 pendings [pri][w_->pending - 1].events |= revents;
855 else 2163 else
856 { 2164 {
857 w_->pending = ++pendingcnt [pri]; 2165 w_->pending = ++pendingcnt [pri];
858 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2166 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
859 pendings [pri][w_->pending - 1].w = w_; 2167 pendings [pri][w_->pending - 1].w = w_;
860 pendings [pri][w_->pending - 1].events = revents; 2168 pendings [pri][w_->pending - 1].events = revents;
861 } 2169 }
2170
2171 pendingpri = NUMPRI - 1;
862} 2172}
863 2173
864inline_speed void 2174inline_speed void
865feed_reverse (EV_P_ W w) 2175feed_reverse (EV_P_ W w)
866{ 2176{
867 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2177 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
868 rfeeds [rfeedcnt++] = w; 2178 rfeeds [rfeedcnt++] = w;
869} 2179}
870 2180
871inline_size void 2181inline_size void
872feed_reverse_done (EV_P_ int revents) 2182feed_reverse_done (EV_P_ int revents)
… …
886} 2196}
887 2197
888/*****************************************************************************/ 2198/*****************************************************************************/
889 2199
890inline_speed void 2200inline_speed void
891fd_event_nc (EV_P_ int fd, int revents) 2201fd_event_nocheck (EV_P_ int fd, int revents)
892{ 2202{
893 ANFD *anfd = anfds + fd; 2203 ANFD *anfd = anfds + fd;
894 ev_io *w; 2204 ev_io *w;
895 2205
896 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)
… …
907inline_speed void 2217inline_speed void
908fd_event (EV_P_ int fd, int revents) 2218fd_event (EV_P_ int fd, int revents)
909{ 2219{
910 ANFD *anfd = anfds + fd; 2220 ANFD *anfd = anfds + fd;
911 2221
912 if (expect_true (!anfd->reify)) 2222 if (ecb_expect_true (!anfd->reify))
913 fd_event_nc (EV_A_ fd, revents); 2223 fd_event_nocheck (EV_A_ fd, revents);
914} 2224}
915 2225
916void 2226void
917ev_feed_fd_event (EV_P_ int fd, int revents) 2227ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
918{ 2228{
919 if (fd >= 0 && fd < anfdmax) 2229 if (fd >= 0 && fd < anfdmax)
920 fd_event_nc (EV_A_ fd, revents); 2230 fd_event_nocheck (EV_A_ fd, revents);
921} 2231}
922 2232
923/* make sure the external fd watch events are in-sync */ 2233/* make sure the external fd watch events are in-sync */
924/* with the kernel/libev internal state */ 2234/* with the kernel/libev internal state */
925inline_size void 2235inline_size void
926fd_reify (EV_P) 2236fd_reify (EV_P)
927{ 2237{
928 int i; 2238 int i;
929 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
930 for (i = 0; i < fdchangecnt; ++i) 2265 for (i = 0; i < fdchangecnt; ++i)
931 { 2266 {
932 int fd = fdchanges [i]; 2267 int fd = fdchanges [i];
933 ANFD *anfd = anfds + fd; 2268 ANFD *anfd = anfds + fd;
934 ev_io *w; 2269 ev_io *w;
935 2270
936 unsigned char events = 0; 2271 unsigned char o_events = anfd->events;
2272 unsigned char o_reify = anfd->reify;
937 2273
938 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2274 anfd->reify = 0;
939 events |= (unsigned char)w->events;
940 2275
941#if EV_SELECT_IS_WINSOCKET 2276 /*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
942 if (events)
943 { 2277 {
944 unsigned long arg; 2278 anfd->events = 0;
945 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 2279
946 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 |= */
947 } 2285 }
948#endif
949 2286
950 { 2287 if (o_reify & EV__IOFDSET)
951 unsigned char o_events = anfd->events;
952 unsigned char o_reify = anfd->reify;
953
954 anfd->reify = 0;
955 anfd->events = events;
956
957 if (o_events != events || o_reify & EV__IOFDSET)
958 backend_modify (EV_A_ fd, o_events, events); 2288 backend_modify (EV_A_ fd, o_events, anfd->events);
959 }
960 } 2289 }
961 2290
962 fdchangecnt = 0; 2291 fdchangecnt = 0;
963} 2292}
964 2293
965/* something about the given fd changed */ 2294/* something about the given fd changed */
966inline_size void 2295inline_size
2296void
967fd_change (EV_P_ int fd, int flags) 2297fd_change (EV_P_ int fd, int flags)
968{ 2298{
969 unsigned char reify = anfds [fd].reify; 2299 unsigned char reify = anfds [fd].reify;
970 anfds [fd].reify |= flags; 2300 anfds [fd].reify |= flags;
971 2301
972 if (expect_true (!reify)) 2302 if (ecb_expect_true (!reify))
973 { 2303 {
974 ++fdchangecnt; 2304 ++fdchangecnt;
975 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2305 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
976 fdchanges [fdchangecnt - 1] = fd; 2306 fdchanges [fdchangecnt - 1] = fd;
977 } 2307 }
978} 2308}
979 2309
980/* 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 */
981inline_speed void 2311inline_speed ecb_cold void
982fd_kill (EV_P_ int fd) 2312fd_kill (EV_P_ int fd)
983{ 2313{
984 ev_io *w; 2314 ev_io *w;
985 2315
986 while ((w = (ev_io *)anfds [fd].head)) 2316 while ((w = (ev_io *)anfds [fd].head))
… …
988 ev_io_stop (EV_A_ w); 2318 ev_io_stop (EV_A_ w);
989 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);
990 } 2320 }
991} 2321}
992 2322
993/* check whether the given fd is atcually valid, for error recovery */ 2323/* check whether the given fd is actually valid, for error recovery */
994inline_size int 2324inline_size ecb_cold int
995fd_valid (int fd) 2325fd_valid (int fd)
996{ 2326{
997#ifdef _WIN32 2327#ifdef _WIN32
998 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2328 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
999#else 2329#else
1000 return fcntl (fd, F_GETFD) != -1; 2330 return fcntl (fd, F_GETFD) != -1;
1001#endif 2331#endif
1002} 2332}
1003 2333
1004/* called on EBADF to verify fds */ 2334/* called on EBADF to verify fds */
1005static void noinline 2335ecb_noinline ecb_cold
2336static void
1006fd_ebadf (EV_P) 2337fd_ebadf (EV_P)
1007{ 2338{
1008 int fd; 2339 int fd;
1009 2340
1010 for (fd = 0; fd < anfdmax; ++fd) 2341 for (fd = 0; fd < anfdmax; ++fd)
… …
1012 if (!fd_valid (fd) && errno == EBADF) 2343 if (!fd_valid (fd) && errno == EBADF)
1013 fd_kill (EV_A_ fd); 2344 fd_kill (EV_A_ fd);
1014} 2345}
1015 2346
1016/* 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 */
1017static void noinline 2348ecb_noinline ecb_cold
2349static void
1018fd_enomem (EV_P) 2350fd_enomem (EV_P)
1019{ 2351{
1020 int fd; 2352 int fd;
1021 2353
1022 for (fd = anfdmax; fd--; ) 2354 for (fd = anfdmax; fd--; )
… …
1026 break; 2358 break;
1027 } 2359 }
1028} 2360}
1029 2361
1030/* 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 */
1031static void noinline 2363ecb_noinline
2364static void
1032fd_rearm_all (EV_P) 2365fd_rearm_all (EV_P)
1033{ 2366{
1034 int fd; 2367 int fd;
1035 2368
1036 for (fd = 0; fd < anfdmax; ++fd) 2369 for (fd = 0; fd < anfdmax; ++fd)
… …
1040 anfds [fd].emask = 0; 2373 anfds [fd].emask = 0;
1041 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); 2374 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
1042 } 2375 }
1043} 2376}
1044 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
1045/*****************************************************************************/ 2392/*****************************************************************************/
1046 2393
1047/* 2394/*
1048 * 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
1049 * 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
1050 * the branching factor of the d-tree. 2397 * the branching factor of the d-tree.
1051 */ 2398 */
1052 2399
1053/* 2400/*
… …
1075 ev_tstamp minat; 2422 ev_tstamp minat;
1076 ANHE *minpos; 2423 ANHE *minpos;
1077 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; 2424 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
1078 2425
1079 /* find minimum child */ 2426 /* find minimum child */
1080 if (expect_true (pos + DHEAP - 1 < E)) 2427 if (ecb_expect_true (pos + DHEAP - 1 < E))
1081 { 2428 {
1082 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2429 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1083 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));
1084 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));
1085 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));
1086 } 2433 }
1087 else if (pos < E) 2434 else if (pos < E)
1088 { 2435 {
1089 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2436 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1090 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));
1091 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));
1092 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));
1093 } 2440 }
1094 else 2441 else
1095 break; 2442 break;
1096 2443
1097 if (ANHE_at (he) <= minat) 2444 if (ANHE_at (he) <= minat)
… …
1105 2452
1106 heap [k] = he; 2453 heap [k] = he;
1107 ev_active (ANHE_w (he)) = k; 2454 ev_active (ANHE_w (he)) = k;
1108} 2455}
1109 2456
1110#else /* 4HEAP */ 2457#else /* not 4HEAP */
1111 2458
1112#define HEAP0 1 2459#define HEAP0 1
1113#define HPARENT(k) ((k) >> 1) 2460#define HPARENT(k) ((k) >> 1)
1114#define UPHEAP_DONE(p,k) (!(p)) 2461#define UPHEAP_DONE(p,k) (!(p))
1115 2462
… …
1201 2548
1202static ANSIG signals [EV_NSIG - 1]; 2549static ANSIG signals [EV_NSIG - 1];
1203 2550
1204/*****************************************************************************/ 2551/*****************************************************************************/
1205 2552
1206/* used to prepare libev internal fd's */ 2553#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1207/* 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
1208inline_speed void 2601inline_speed void
1209fd_intern (int fd) 2602evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1210{ 2603{
1211#ifdef _WIN32 2604 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1212 unsigned long arg = 1;
1213 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1214#else
1215 fcntl (fd, F_SETFD, FD_CLOEXEC);
1216 fcntl (fd, F_SETFL, O_NONBLOCK);
1217#endif
1218}
1219 2605
1220static void noinline 2606 if (ecb_expect_true (*flag))
1221evpipe_init (EV_P) 2607 return;
1222{ 2608
1223 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)
1224 { 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
1225#if EV_USE_EVENTFD 2625#if EV_USE_EVENTFD
1226 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2626 if (evpipe [0] < 0)
1227 if (evfd < 0 && errno == EINVAL)
1228 evfd = eventfd (0, 0);
1229
1230 if (evfd >= 0)
1231 { 2627 {
1232 evpipe [0] = -1; 2628 uint64_t counter = 1;
1233 fd_intern (evfd); /* doing it twice doesn't hurt */ 2629 write (evpipe [1], &counter, sizeof (uint64_t));
1234 ev_io_set (&pipe_w, evfd, EV_READ);
1235 } 2630 }
1236 else 2631 else
1237#endif 2632#endif
1238 { 2633 {
1239 while (pipe (evpipe)) 2634#ifdef _WIN32
1240 ev_syserr ("(libev) error creating signal/async pipe"); 2635 WSABUF buf;
1241 2636 DWORD sent;
1242 fd_intern (evpipe [0]); 2637 buf.buf = (char *)&buf;
1243 fd_intern (evpipe [1]); 2638 buf.len = 1;
1244 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
1245 } 2643 }
1246
1247 ev_io_start (EV_A_ &pipe_w);
1248 ev_unref (EV_A); /* watcher should not keep loop alive */
1249 }
1250}
1251
1252inline_size void
1253evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1254{
1255 if (!*flag)
1256 {
1257 int old_errno = errno; /* save errno because write might clobber it */
1258
1259 *flag = 1;
1260
1261#if EV_USE_EVENTFD
1262 if (evfd >= 0)
1263 {
1264 uint64_t counter = 1;
1265 write (evfd, &counter, sizeof (uint64_t));
1266 }
1267 else
1268#endif
1269 write (evpipe [1], &old_errno, 1);
1270 2644
1271 errno = old_errno; 2645 errno = old_errno;
1272 } 2646 }
1273} 2647}
1274 2648
… …
1277static void 2651static void
1278pipecb (EV_P_ ev_io *iow, int revents) 2652pipecb (EV_P_ ev_io *iow, int revents)
1279{ 2653{
1280 int i; 2654 int i;
1281 2655
2656 if (revents & EV_READ)
2657 {
1282#if EV_USE_EVENTFD 2658#if EV_USE_EVENTFD
1283 if (evfd >= 0) 2659 if (evpipe [0] < 0)
1284 { 2660 {
1285 uint64_t counter; 2661 uint64_t counter;
1286 read (evfd, &counter, sizeof (uint64_t)); 2662 read (evpipe [1], &counter, sizeof (uint64_t));
1287 } 2663 }
1288 else 2664 else
1289#endif 2665#endif
1290 { 2666 {
1291 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
1292 read (evpipe [0], &dummy, 1); 2676 read (evpipe [0], &dummy, sizeof (dummy));
2677#endif
2678 }
1293 } 2679 }
1294 2680
2681 pipe_write_skipped = 0;
2682
2683 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2684
2685#if EV_SIGNAL_ENABLE
1295 if (sig_pending) 2686 if (sig_pending)
1296 { 2687 {
1297 sig_pending = 0; 2688 sig_pending = 0;
1298 2689
2690 ECB_MEMORY_FENCE;
2691
1299 for (i = EV_NSIG - 1; i--; ) 2692 for (i = EV_NSIG - 1; i--; )
1300 if (expect_false (signals [i].pending)) 2693 if (ecb_expect_false (signals [i].pending))
1301 ev_feed_signal_event (EV_A_ i + 1); 2694 ev_feed_signal_event (EV_A_ i + 1);
1302 } 2695 }
2696#endif
1303 2697
1304#if EV_ASYNC_ENABLE 2698#if EV_ASYNC_ENABLE
1305 if (async_pending) 2699 if (async_pending)
1306 { 2700 {
1307 async_pending = 0; 2701 async_pending = 0;
2702
2703 ECB_MEMORY_FENCE;
1308 2704
1309 for (i = asynccnt; i--; ) 2705 for (i = asynccnt; i--; )
1310 if (asyncs [i]->sent) 2706 if (asyncs [i]->sent)
1311 { 2707 {
1312 asyncs [i]->sent = 0; 2708 asyncs [i]->sent = 0;
2709 ECB_MEMORY_FENCE_RELEASE;
1313 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2710 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1314 } 2711 }
1315 } 2712 }
1316#endif 2713#endif
1317} 2714}
1318 2715
1319/*****************************************************************************/ 2716/*****************************************************************************/
1320 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
1321static void 2734static void
1322ev_sighandler (int signum) 2735ev_sighandler (int signum)
1323{ 2736{
1324#if EV_MULTIPLICITY
1325 EV_P = signals [signum - 1].loop;
1326#endif
1327
1328#ifdef _WIN32 2737#ifdef _WIN32
1329 signal (signum, ev_sighandler); 2738 signal (signum, ev_sighandler);
1330#endif 2739#endif
1331 2740
1332 signals [signum - 1].pending = 1; 2741 ev_feed_signal (signum);
1333 evpipe_write (EV_A_ &sig_pending);
1334} 2742}
1335 2743
1336void noinline 2744ecb_noinline
2745void
1337ev_feed_signal_event (EV_P_ int signum) 2746ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
1338{ 2747{
1339 WL w; 2748 WL w;
1340 2749
1341 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2750 if (ecb_expect_false (signum <= 0 || signum >= EV_NSIG))
1342 return; 2751 return;
1343 2752
1344 --signum; 2753 --signum;
1345 2754
1346#if EV_MULTIPLICITY 2755#if EV_MULTIPLICITY
1347 /* 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 */
1348 /* or, likely more useful, feeding a signal nobody is waiting for */ 2757 /* or, likely more useful, feeding a signal nobody is waiting for */
1349 2758
1350 if (expect_false (signals [signum].loop != EV_A)) 2759 if (ecb_expect_false (signals [signum].loop != EV_A))
1351 return; 2760 return;
1352#endif 2761#endif
1353 2762
1354 signals [signum].pending = 0; 2763 signals [signum].pending = 0;
2764 ECB_MEMORY_FENCE_RELEASE;
1355 2765
1356 for (w = signals [signum].head; w; w = w->next) 2766 for (w = signals [signum].head; w; w = w->next)
1357 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2767 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1358} 2768}
1359 2769
… …
1375 break; 2785 break;
1376 } 2786 }
1377} 2787}
1378#endif 2788#endif
1379 2789
2790#endif
2791
1380/*****************************************************************************/ 2792/*****************************************************************************/
1381 2793
2794#if EV_CHILD_ENABLE
1382static WL childs [EV_PID_HASHSIZE]; 2795static WL childs [EV_PID_HASHSIZE];
1383
1384#ifndef _WIN32
1385 2796
1386static ev_signal childev; 2797static ev_signal childev;
1387 2798
1388#ifndef WIFCONTINUED 2799#ifndef WIFCONTINUED
1389# define WIFCONTINUED(status) 0 2800# define WIFCONTINUED(status) 0
… …
1394child_reap (EV_P_ int chain, int pid, int status) 2805child_reap (EV_P_ int chain, int pid, int status)
1395{ 2806{
1396 ev_child *w; 2807 ev_child *w;
1397 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2808 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1398 2809
1399 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)
1400 { 2811 {
1401 if ((w->pid == pid || !w->pid) 2812 if ((w->pid == pid || !w->pid)
1402 && (!traced || (w->flags & 1))) 2813 && (!traced || (w->flags & 1)))
1403 { 2814 {
1404 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 */
… …
1429 /* 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 */
1430 /* 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 */
1431 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2842 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1432 2843
1433 child_reap (EV_A_ pid, pid, status); 2844 child_reap (EV_A_ pid, pid, status);
1434 if (EV_PID_HASHSIZE > 1) 2845 if ((EV_PID_HASHSIZE) > 1)
1435 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 */
1436} 2847}
1437 2848
1438#endif 2849#endif
1439 2850
1440/*****************************************************************************/ 2851/*****************************************************************************/
1441 2852
2853#if EV_USE_IOCP
2854# include "ev_iocp.c"
2855#endif
1442#if EV_USE_PORT 2856#if EV_USE_PORT
1443# include "ev_port.c" 2857# include "ev_port.c"
1444#endif 2858#endif
1445#if EV_USE_KQUEUE 2859#if EV_USE_KQUEUE
1446# include "ev_kqueue.c" 2860# include "ev_kqueue.c"
1447#endif 2861#endif
1448#if EV_USE_EPOLL 2862#if EV_USE_EPOLL
1449# include "ev_epoll.c" 2863# include "ev_epoll.c"
1450#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
1451#if EV_USE_POLL 2871#if EV_USE_POLL
1452# include "ev_poll.c" 2872# include "ev_poll.c"
1453#endif 2873#endif
1454#if EV_USE_SELECT 2874#if EV_USE_SELECT
1455# include "ev_select.c" 2875# include "ev_select.c"
1456#endif 2876#endif
1457 2877
1458int 2878ecb_cold int
1459ev_version_major (void) 2879ev_version_major (void) EV_NOEXCEPT
1460{ 2880{
1461 return EV_VERSION_MAJOR; 2881 return EV_VERSION_MAJOR;
1462} 2882}
1463 2883
1464int 2884ecb_cold int
1465ev_version_minor (void) 2885ev_version_minor (void) EV_NOEXCEPT
1466{ 2886{
1467 return EV_VERSION_MINOR; 2887 return EV_VERSION_MINOR;
1468} 2888}
1469 2889
1470/* 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 */
1471int inline_size 2891inline_size ecb_cold int
1472enable_secure (void) 2892enable_secure (void)
1473{ 2893{
1474#ifdef _WIN32 2894#ifdef _WIN32
1475 return 0; 2895 return 0;
1476#else 2896#else
1477 return getuid () != geteuid () 2897 return getuid () != geteuid ()
1478 || getgid () != getegid (); 2898 || getgid () != getegid ();
1479#endif 2899#endif
1480} 2900}
1481 2901
2902ecb_cold
1482unsigned int 2903unsigned int
1483ev_supported_backends (void) 2904ev_supported_backends (void) EV_NOEXCEPT
1484{ 2905{
1485 unsigned int flags = 0; 2906 unsigned int flags = 0;
1486 2907
1487 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2908 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1488 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2909 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
1489 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;
1490 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 2913 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
1491 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2914 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
1492 2915
1493 return flags; 2916 return flags;
1494} 2917}
1495 2918
2919ecb_cold
1496unsigned int 2920unsigned int
1497ev_recommended_backends (void) 2921ev_recommended_backends (void) EV_NOEXCEPT
1498{ 2922{
1499 unsigned int flags = ev_supported_backends (); 2923 unsigned int flags = ev_supported_backends ();
1500 2924
1501#ifndef __NetBSD__ 2925#ifndef __NetBSD__
1502 /* kqueue is borked on everything but netbsd apparently */ 2926 /* kqueue is borked on everything but netbsd apparently */
… …
1506#ifdef __APPLE__ 2930#ifdef __APPLE__
1507 /* only select works correctly on that "unix-certified" platform */ 2931 /* only select works correctly on that "unix-certified" platform */
1508 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2932 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1509 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 */
1510#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
1511 2947
1512 return flags; 2948 return flags;
1513} 2949}
1514 2950
2951ecb_cold
1515unsigned int 2952unsigned int
1516ev_embeddable_backends (void) 2953ev_embeddable_backends (void) EV_NOEXCEPT
1517{ 2954{
1518 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2955 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1519 2956
1520 /* 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 */
1521 /* please fix it and tell me how to detect the fix */ 2958 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1522 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 */
1523 2967
1524 return flags; 2968 return flags;
1525} 2969}
1526 2970
1527unsigned int 2971unsigned int
1528ev_backend (EV_P) 2972ev_backend (EV_P) EV_NOEXCEPT
1529{ 2973{
1530 return backend; 2974 return backend;
1531} 2975}
1532 2976
1533#if EV_MINIMAL < 2 2977#if EV_FEATURE_API
1534unsigned int 2978unsigned int
1535ev_loop_count (EV_P) 2979ev_iteration (EV_P) EV_NOEXCEPT
1536{ 2980{
1537 return loop_count; 2981 return loop_count;
1538} 2982}
1539 2983
1540unsigned int 2984unsigned int
1541ev_loop_depth (EV_P) 2985ev_depth (EV_P) EV_NOEXCEPT
1542{ 2986{
1543 return loop_depth; 2987 return loop_depth;
1544} 2988}
1545 2989
1546void 2990void
1547ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2991ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1548{ 2992{
1549 io_blocktime = interval; 2993 io_blocktime = interval;
1550} 2994}
1551 2995
1552void 2996void
1553ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2997ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1554{ 2998{
1555 timeout_blocktime = interval; 2999 timeout_blocktime = interval;
1556} 3000}
1557 3001
1558void 3002void
1559ev_set_userdata (EV_P_ void *data) 3003ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
1560{ 3004{
1561 userdata = data; 3005 userdata = data;
1562} 3006}
1563 3007
1564void * 3008void *
1565ev_userdata (EV_P) 3009ev_userdata (EV_P) EV_NOEXCEPT
1566{ 3010{
1567 return userdata; 3011 return userdata;
1568} 3012}
1569 3013
3014void
1570void 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
1571{ 3016{
1572 invoke_cb = invoke_pending_cb; 3017 invoke_cb = invoke_pending_cb;
1573} 3018}
1574 3019
3020void
1575void 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
1576{ 3022{
1577 release_cb = release; 3023 release_cb = release;
1578 acquire_cb = acquire; 3024 acquire_cb = acquire;
1579} 3025}
1580#endif 3026#endif
1581 3027
1582/* initialise a loop structure, must be zero-initialised */ 3028/* initialise a loop structure, must be zero-initialised */
1583static void noinline 3029ecb_noinline ecb_cold
3030static void
1584loop_init (EV_P_ unsigned int flags) 3031loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
1585{ 3032{
1586 if (!backend) 3033 if (!backend)
1587 { 3034 {
3035 origflags = flags;
3036
1588#if EV_USE_REALTIME 3037#if EV_USE_REALTIME
1589 if (!have_realtime) 3038 if (!have_realtime)
1590 { 3039 {
1591 struct timespec ts; 3040 struct timespec ts;
1592 3041
… …
1614 if (!(flags & EVFLAG_NOENV) 3063 if (!(flags & EVFLAG_NOENV)
1615 && !enable_secure () 3064 && !enable_secure ()
1616 && getenv ("LIBEV_FLAGS")) 3065 && getenv ("LIBEV_FLAGS"))
1617 flags = atoi (getenv ("LIBEV_FLAGS")); 3066 flags = atoi (getenv ("LIBEV_FLAGS"));
1618 3067
1619 ev_rt_now = ev_time (); 3068 ev_rt_now = ev_time ();
1620 mn_now = get_clock (); 3069 mn_now = get_clock ();
1621 now_floor = mn_now; 3070 now_floor = mn_now;
1622 rtmn_diff = ev_rt_now - mn_now; 3071 rtmn_diff = ev_rt_now - mn_now;
1623#if EV_MINIMAL < 2 3072#if EV_FEATURE_API
1624 invoke_cb = ev_invoke_pending; 3073 invoke_cb = ev_invoke_pending;
1625#endif 3074#endif
1626 3075
1627 io_blocktime = 0.; 3076 io_blocktime = 0.;
1628 timeout_blocktime = 0.; 3077 timeout_blocktime = 0.;
1629 backend = 0; 3078 backend = 0;
1630 backend_fd = -1; 3079 backend_fd = -1;
1631 sig_pending = 0; 3080 sig_pending = 0;
1632#if EV_ASYNC_ENABLE 3081#if EV_ASYNC_ENABLE
1633 async_pending = 0; 3082 async_pending = 0;
1634#endif 3083#endif
3084 pipe_write_skipped = 0;
3085 pipe_write_wanted = 0;
3086 evpipe [0] = -1;
3087 evpipe [1] = -1;
1635#if EV_USE_INOTIFY 3088#if EV_USE_INOTIFY
1636 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 3089 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1637#endif 3090#endif
1638#if EV_USE_SIGNALFD 3091#if EV_USE_SIGNALFD
1639 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 3092 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1640#endif 3093#endif
1641 3094
1642 if (!(flags & 0x0000ffffU)) 3095 if (!(flags & EVBACKEND_MASK))
1643 flags |= ev_recommended_backends (); 3096 flags |= ev_recommended_backends ();
1644 3097
3098#if EV_USE_IOCP
3099 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
3100#endif
1645#if EV_USE_PORT 3101#if EV_USE_PORT
1646 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 3102 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1647#endif 3103#endif
1648#if EV_USE_KQUEUE 3104#if EV_USE_KQUEUE
1649 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);
1650#endif 3112#endif
1651#if EV_USE_EPOLL 3113#if EV_USE_EPOLL
1652 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 3114 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
1653#endif 3115#endif
1654#if EV_USE_POLL 3116#if EV_USE_POLL
1655 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 3117 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
1656#endif 3118#endif
1657#if EV_USE_SELECT 3119#if EV_USE_SELECT
1658 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 3120 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
1659#endif 3121#endif
1660 3122
1661 ev_prepare_init (&pending_w, pendingcb); 3123 ev_prepare_init (&pending_w, pendingcb);
1662 3124
3125#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1663 ev_init (&pipe_w, pipecb); 3126 ev_init (&pipe_w, pipecb);
1664 ev_set_priority (&pipe_w, EV_MAXPRI); 3127 ev_set_priority (&pipe_w, EV_MAXPRI);
3128#endif
1665 } 3129 }
1666} 3130}
1667 3131
1668/* free up a loop structure */ 3132/* free up a loop structure */
1669static void noinline 3133ecb_cold
3134void
1670loop_destroy (EV_P) 3135ev_loop_destroy (EV_P)
1671{ 3136{
1672 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
1673 3161
1674 if (ev_is_active (&pipe_w)) 3162 if (ev_is_active (&pipe_w))
1675 { 3163 {
1676 /*ev_ref (EV_A);*/ 3164 /*ev_ref (EV_A);*/
1677 /*ev_io_stop (EV_A_ &pipe_w);*/ 3165 /*ev_io_stop (EV_A_ &pipe_w);*/
1678 3166
1679#if EV_USE_EVENTFD
1680 if (evfd >= 0)
1681 close (evfd);
1682#endif
1683
1684 if (evpipe [0] >= 0)
1685 {
1686 EV_WIN32_CLOSE_FD (evpipe [0]); 3167 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1687 EV_WIN32_CLOSE_FD (evpipe [1]); 3168 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1688 }
1689 } 3169 }
1690 3170
1691#if EV_USE_SIGNALFD 3171#if EV_USE_SIGNALFD
1692 if (ev_is_active (&sigfd_w)) 3172 if (ev_is_active (&sigfd_w))
1693 close (sigfd); 3173 close (sigfd);
… …
1699#endif 3179#endif
1700 3180
1701 if (backend_fd >= 0) 3181 if (backend_fd >= 0)
1702 close (backend_fd); 3182 close (backend_fd);
1703 3183
3184#if EV_USE_IOCP
3185 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
3186#endif
1704#if EV_USE_PORT 3187#if EV_USE_PORT
1705 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3188 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1706#endif 3189#endif
1707#if EV_USE_KQUEUE 3190#if EV_USE_KQUEUE
1708 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);
1709#endif 3198#endif
1710#if EV_USE_EPOLL 3199#if EV_USE_EPOLL
1711 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3200 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
1712#endif 3201#endif
1713#if EV_USE_POLL 3202#if EV_USE_POLL
1714 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3203 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
1715#endif 3204#endif
1716#if EV_USE_SELECT 3205#if EV_USE_SELECT
1717 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3206 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
1718#endif 3207#endif
1719 3208
1720 for (i = NUMPRI; i--; ) 3209 for (i = NUMPRI; i--; )
1721 { 3210 {
1722 array_free (pending, [i]); 3211 array_free (pending, [i]);
… …
1735 array_free (periodic, EMPTY); 3224 array_free (periodic, EMPTY);
1736#endif 3225#endif
1737#if EV_FORK_ENABLE 3226#if EV_FORK_ENABLE
1738 array_free (fork, EMPTY); 3227 array_free (fork, EMPTY);
1739#endif 3228#endif
3229#if EV_CLEANUP_ENABLE
3230 array_free (cleanup, EMPTY);
3231#endif
1740 array_free (prepare, EMPTY); 3232 array_free (prepare, EMPTY);
1741 array_free (check, EMPTY); 3233 array_free (check, EMPTY);
1742#if EV_ASYNC_ENABLE 3234#if EV_ASYNC_ENABLE
1743 array_free (async, EMPTY); 3235 array_free (async, EMPTY);
1744#endif 3236#endif
1745 3237
1746 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
1747} 3248}
1748 3249
1749#if EV_USE_INOTIFY 3250#if EV_USE_INOTIFY
1750inline_size void infy_fork (EV_P); 3251inline_size void infy_fork (EV_P);
1751#endif 3252#endif
1752 3253
1753inline_size void 3254inline_size void
1754loop_fork (EV_P) 3255loop_fork (EV_P)
1755{ 3256{
1756#if EV_USE_PORT 3257#if EV_USE_PORT
1757 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3258 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1758#endif 3259#endif
1759#if EV_USE_KQUEUE 3260#if EV_USE_KQUEUE
1760 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);
1761#endif 3268#endif
1762#if EV_USE_EPOLL 3269#if EV_USE_EPOLL
1763 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3270 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
1764#endif 3271#endif
1765#if EV_USE_INOTIFY 3272#if EV_USE_INOTIFY
1766 infy_fork (EV_A); 3273 infy_fork (EV_A);
1767#endif 3274#endif
1768 3275
3276#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1769 if (ev_is_active (&pipe_w)) 3277 if (ev_is_active (&pipe_w) && postfork != 2)
1770 { 3278 {
1771 /* this "locks" the handlers against writing to the pipe */ 3279 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1772 /* while we modify the fd vars */
1773 sig_pending = 1;
1774#if EV_ASYNC_ENABLE
1775 async_pending = 1;
1776#endif
1777 3280
1778 ev_ref (EV_A); 3281 ev_ref (EV_A);
1779 ev_io_stop (EV_A_ &pipe_w); 3282 ev_io_stop (EV_A_ &pipe_w);
1780 3283
1781#if EV_USE_EVENTFD
1782 if (evfd >= 0)
1783 close (evfd);
1784#endif
1785
1786 if (evpipe [0] >= 0) 3284 if (evpipe [0] >= 0)
1787 {
1788 EV_WIN32_CLOSE_FD (evpipe [0]); 3285 EV_WIN32_CLOSE_FD (evpipe [0]);
1789 EV_WIN32_CLOSE_FD (evpipe [1]);
1790 }
1791 3286
1792 evpipe_init (EV_A); 3287 evpipe_init (EV_A);
1793 /* now iterate over everything, in case we missed something */ 3288 /* iterate over everything, in case we missed something before */
1794 pipecb (EV_A_ &pipe_w, EV_READ); 3289 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1795 } 3290 }
3291#endif
1796 3292
1797 postfork = 0; 3293 postfork = 0;
1798} 3294}
1799 3295
1800#if EV_MULTIPLICITY 3296#if EV_MULTIPLICITY
1801 3297
3298ecb_cold
1802struct ev_loop * 3299struct ev_loop *
1803ev_loop_new (unsigned int flags) 3300ev_loop_new (unsigned int flags) EV_NOEXCEPT
1804{ 3301{
1805 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3302 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1806 3303
1807 memset (EV_A, 0, sizeof (struct ev_loop)); 3304 memset (EV_A, 0, sizeof (struct ev_loop));
1808 loop_init (EV_A_ flags); 3305 loop_init (EV_A_ flags);
1809 3306
1810 if (ev_backend (EV_A)) 3307 if (ev_backend (EV_A))
1811 return EV_A; 3308 return EV_A;
1812 3309
3310 ev_free (EV_A);
1813 return 0; 3311 return 0;
1814} 3312}
1815 3313
1816void
1817ev_loop_destroy (EV_P)
1818{
1819 loop_destroy (EV_A);
1820 ev_free (loop);
1821}
1822
1823void
1824ev_loop_fork (EV_P)
1825{
1826 postfork = 1; /* must be in line with ev_default_fork */
1827}
1828#endif /* multiplicity */ 3314#endif /* multiplicity */
1829 3315
1830#if EV_VERIFY 3316#if EV_VERIFY
1831static void noinline 3317ecb_noinline ecb_cold
3318static void
1832verify_watcher (EV_P_ W w) 3319verify_watcher (EV_P_ W w)
1833{ 3320{
1834 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));
1835 3322
1836 if (w->pending) 3323 if (w->pending)
1837 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));
1838} 3325}
1839 3326
1840static void noinline 3327ecb_noinline ecb_cold
3328static void
1841verify_heap (EV_P_ ANHE *heap, int N) 3329verify_heap (EV_P_ ANHE *heap, int N)
1842{ 3330{
1843 int i; 3331 int i;
1844 3332
1845 for (i = HEAP0; i < N + HEAP0; ++i) 3333 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1850 3338
1851 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3339 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1852 } 3340 }
1853} 3341}
1854 3342
1855static void noinline 3343ecb_noinline ecb_cold
3344static void
1856array_verify (EV_P_ W *ws, int cnt) 3345array_verify (EV_P_ W *ws, int cnt)
1857{ 3346{
1858 while (cnt--) 3347 while (cnt--)
1859 { 3348 {
1860 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3349 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1861 verify_watcher (EV_A_ ws [cnt]); 3350 verify_watcher (EV_A_ ws [cnt]);
1862 } 3351 }
1863} 3352}
1864#endif 3353#endif
1865 3354
1866#if EV_MINIMAL < 2 3355#if EV_FEATURE_API
1867void 3356void ecb_cold
1868ev_loop_verify (EV_P) 3357ev_verify (EV_P) EV_NOEXCEPT
1869{ 3358{
1870#if EV_VERIFY 3359#if EV_VERIFY
1871 int i; 3360 int i;
1872 WL w; 3361 WL w, w2;
1873 3362
1874 assert (activecnt >= -1); 3363 assert (activecnt >= -1);
1875 3364
1876 assert (fdchangemax >= fdchangecnt); 3365 assert (fdchangemax >= fdchangecnt);
1877 for (i = 0; i < fdchangecnt; ++i) 3366 for (i = 0; i < fdchangecnt; ++i)
1878 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3367 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1879 3368
1880 assert (anfdmax >= 0); 3369 assert (anfdmax >= 0);
1881 for (i = 0; i < anfdmax; ++i) 3370 for (i = 0; i < anfdmax; ++i)
3371 {
3372 int j = 0;
3373
1882 for (w = anfds [i].head; w; w = w->next) 3374 for (w = w2 = anfds [i].head; w; w = w->next)
1883 { 3375 {
1884 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
1885 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));
1886 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));
1887 } 3386 }
3387 }
1888 3388
1889 assert (timermax >= timercnt); 3389 assert (timermax >= timercnt);
1890 verify_heap (EV_A_ timers, timercnt); 3390 verify_heap (EV_A_ timers, timercnt);
1891 3391
1892#if EV_PERIODIC_ENABLE 3392#if EV_PERIODIC_ENABLE
… …
1907#if EV_FORK_ENABLE 3407#if EV_FORK_ENABLE
1908 assert (forkmax >= forkcnt); 3408 assert (forkmax >= forkcnt);
1909 array_verify (EV_A_ (W *)forks, forkcnt); 3409 array_verify (EV_A_ (W *)forks, forkcnt);
1910#endif 3410#endif
1911 3411
3412#if EV_CLEANUP_ENABLE
3413 assert (cleanupmax >= cleanupcnt);
3414 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
3415#endif
3416
1912#if EV_ASYNC_ENABLE 3417#if EV_ASYNC_ENABLE
1913 assert (asyncmax >= asynccnt); 3418 assert (asyncmax >= asynccnt);
1914 array_verify (EV_A_ (W *)asyncs, asynccnt); 3419 array_verify (EV_A_ (W *)asyncs, asynccnt);
1915#endif 3420#endif
1916 3421
3422#if EV_PREPARE_ENABLE
1917 assert (preparemax >= preparecnt); 3423 assert (preparemax >= preparecnt);
1918 array_verify (EV_A_ (W *)prepares, preparecnt); 3424 array_verify (EV_A_ (W *)prepares, preparecnt);
3425#endif
1919 3426
3427#if EV_CHECK_ENABLE
1920 assert (checkmax >= checkcnt); 3428 assert (checkmax >= checkcnt);
1921 array_verify (EV_A_ (W *)checks, checkcnt); 3429 array_verify (EV_A_ (W *)checks, checkcnt);
3430#endif
1922 3431
1923# if 0 3432# if 0
3433#if EV_CHILD_ENABLE
1924 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)
1925 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending) 3435 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
3436#endif
1926# endif 3437# endif
1927#endif 3438#endif
1928} 3439}
1929#endif 3440#endif
1930 3441
1931#if EV_MULTIPLICITY 3442#if EV_MULTIPLICITY
3443ecb_cold
1932struct ev_loop * 3444struct ev_loop *
1933ev_default_loop_init (unsigned int flags)
1934#else 3445#else
1935int 3446int
3447#endif
1936ev_default_loop (unsigned int flags) 3448ev_default_loop (unsigned int flags) EV_NOEXCEPT
1937#endif
1938{ 3449{
1939 if (!ev_default_loop_ptr) 3450 if (!ev_default_loop_ptr)
1940 { 3451 {
1941#if EV_MULTIPLICITY 3452#if EV_MULTIPLICITY
1942 EV_P = ev_default_loop_ptr = &default_loop_struct; 3453 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1946 3457
1947 loop_init (EV_A_ flags); 3458 loop_init (EV_A_ flags);
1948 3459
1949 if (ev_backend (EV_A)) 3460 if (ev_backend (EV_A))
1950 { 3461 {
1951#ifndef _WIN32 3462#if EV_CHILD_ENABLE
1952 ev_signal_init (&childev, childcb, SIGCHLD); 3463 ev_signal_init (&childev, childcb, SIGCHLD);
1953 ev_set_priority (&childev, EV_MAXPRI); 3464 ev_set_priority (&childev, EV_MAXPRI);
1954 ev_signal_start (EV_A_ &childev); 3465 ev_signal_start (EV_A_ &childev);
1955 ev_unref (EV_A); /* child watcher should not keep loop alive */ 3466 ev_unref (EV_A); /* child watcher should not keep loop alive */
1956#endif 3467#endif
… …
1961 3472
1962 return ev_default_loop_ptr; 3473 return ev_default_loop_ptr;
1963} 3474}
1964 3475
1965void 3476void
1966ev_default_destroy (void) 3477ev_loop_fork (EV_P) EV_NOEXCEPT
1967{ 3478{
1968#if EV_MULTIPLICITY 3479 postfork = 1;
1969 EV_P = ev_default_loop_ptr;
1970#endif
1971
1972 ev_default_loop_ptr = 0;
1973
1974#ifndef _WIN32
1975 ev_ref (EV_A); /* child watcher */
1976 ev_signal_stop (EV_A_ &childev);
1977#endif
1978
1979 loop_destroy (EV_A);
1980}
1981
1982void
1983ev_default_fork (void)
1984{
1985#if EV_MULTIPLICITY
1986 EV_P = ev_default_loop_ptr;
1987#endif
1988
1989 postfork = 1; /* must be in line with ev_loop_fork */
1990} 3480}
1991 3481
1992/*****************************************************************************/ 3482/*****************************************************************************/
1993 3483
1994void 3484void
… …
1996{ 3486{
1997 EV_CB_INVOKE ((W)w, revents); 3487 EV_CB_INVOKE ((W)w, revents);
1998} 3488}
1999 3489
2000unsigned int 3490unsigned int
2001ev_pending_count (EV_P) 3491ev_pending_count (EV_P) EV_NOEXCEPT
2002{ 3492{
2003 int pri; 3493 int pri;
2004 unsigned int count = 0; 3494 unsigned int count = 0;
2005 3495
2006 for (pri = NUMPRI; pri--; ) 3496 for (pri = NUMPRI; pri--; )
2007 count += pendingcnt [pri]; 3497 count += pendingcnt [pri];
2008 3498
2009 return count; 3499 return count;
2010} 3500}
2011 3501
2012void noinline 3502ecb_noinline
3503void
2013ev_invoke_pending (EV_P) 3504ev_invoke_pending (EV_P)
2014{ 3505{
2015 int pri; 3506 pendingpri = NUMPRI;
2016 3507
2017 for (pri = NUMPRI; pri--; ) 3508 do
3509 {
3510 --pendingpri;
3511
3512 /* pendingpri possibly gets modified in the inner loop */
2018 while (pendingcnt [pri]) 3513 while (pendingcnt [pendingpri])
2019 { 3514 {
2020 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3515 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2021 3516
2022 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2023 /* ^ this is no longer true, as pending_w could be here */
2024
2025 p->w->pending = 0; 3517 p->w->pending = 0;
2026 EV_CB_INVOKE (p->w, p->events); 3518 EV_CB_INVOKE (p->w, p->events);
2027 EV_FREQUENT_CHECK; 3519 EV_FREQUENT_CHECK;
2028 } 3520 }
3521 }
3522 while (pendingpri);
2029} 3523}
2030 3524
2031#if EV_IDLE_ENABLE 3525#if EV_IDLE_ENABLE
2032/* make idle watchers pending. this handles the "call-idle */ 3526/* make idle watchers pending. this handles the "call-idle */
2033/* only when higher priorities are idle" logic */ 3527/* only when higher priorities are idle" logic */
2034inline_size void 3528inline_size void
2035idle_reify (EV_P) 3529idle_reify (EV_P)
2036{ 3530{
2037 if (expect_false (idleall)) 3531 if (ecb_expect_false (idleall))
2038 { 3532 {
2039 int pri; 3533 int pri;
2040 3534
2041 for (pri = NUMPRI; pri--; ) 3535 for (pri = NUMPRI; pri--; )
2042 { 3536 {
… …
2072 { 3566 {
2073 ev_at (w) += w->repeat; 3567 ev_at (w) += w->repeat;
2074 if (ev_at (w) < mn_now) 3568 if (ev_at (w) < mn_now)
2075 ev_at (w) = mn_now; 3569 ev_at (w) = mn_now;
2076 3570
2077 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.)));
2078 3572
2079 ANHE_at_cache (timers [HEAP0]); 3573 ANHE_at_cache (timers [HEAP0]);
2080 downheap (timers, timercnt, HEAP0); 3574 downheap (timers, timercnt, HEAP0);
2081 } 3575 }
2082 else 3576 else
… …
2085 EV_FREQUENT_CHECK; 3579 EV_FREQUENT_CHECK;
2086 feed_reverse (EV_A_ (W)w); 3580 feed_reverse (EV_A_ (W)w);
2087 } 3581 }
2088 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 3582 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
2089 3583
2090 feed_reverse_done (EV_A_ EV_TIMEOUT); 3584 feed_reverse_done (EV_A_ EV_TIMER);
2091 } 3585 }
2092} 3586}
2093 3587
2094#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
2095/* make periodics pending */ 3615/* make periodics pending */
2096inline_size void 3616inline_size void
2097periodics_reify (EV_P) 3617periodics_reify (EV_P)
2098{ 3618{
2099 EV_FREQUENT_CHECK; 3619 EV_FREQUENT_CHECK;
2100 3620
2101 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3621 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2102 { 3622 {
2103 int feed_count = 0;
2104
2105 do 3623 do
2106 { 3624 {
2107 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3625 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2108 3626
2109 /*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)));*/
… …
2118 ANHE_at_cache (periodics [HEAP0]); 3636 ANHE_at_cache (periodics [HEAP0]);
2119 downheap (periodics, periodiccnt, HEAP0); 3637 downheap (periodics, periodiccnt, HEAP0);
2120 } 3638 }
2121 else if (w->interval) 3639 else if (w->interval)
2122 { 3640 {
2123 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3641 periodic_recalc (EV_A_ w);
2124 /* if next trigger time is not sufficiently in the future, put it there */
2125 /* this might happen because of floating point inexactness */
2126 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2127 {
2128 ev_at (w) += w->interval;
2129
2130 /* if interval is unreasonably low we might still have a time in the past */
2131 /* so correct this. this will make the periodic very inexact, but the user */
2132 /* has effectively asked to get triggered more often than possible */
2133 if (ev_at (w) < ev_rt_now)
2134 ev_at (w) = ev_rt_now;
2135 }
2136
2137 ANHE_at_cache (periodics [HEAP0]); 3642 ANHE_at_cache (periodics [HEAP0]);
2138 downheap (periodics, periodiccnt, HEAP0); 3643 downheap (periodics, periodiccnt, HEAP0);
2139 } 3644 }
2140 else 3645 else
2141 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3646 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2148 feed_reverse_done (EV_A_ EV_PERIODIC); 3653 feed_reverse_done (EV_A_ EV_PERIODIC);
2149 } 3654 }
2150} 3655}
2151 3656
2152/* simply recalculate all periodics */ 3657/* simply recalculate all periodics */
2153/* 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? */
2154static void noinline 3659ecb_noinline ecb_cold
3660static void
2155periodics_reschedule (EV_P) 3661periodics_reschedule (EV_P)
2156{ 3662{
2157 int i; 3663 int i;
2158 3664
2159 /* adjust periodics after time jump */ 3665 /* adjust periodics after time jump */
… …
2162 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3668 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2163 3669
2164 if (w->reschedule_cb) 3670 if (w->reschedule_cb)
2165 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3671 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2166 else if (w->interval) 3672 else if (w->interval)
2167 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3673 periodic_recalc (EV_A_ w);
2168 3674
2169 ANHE_at_cache (periodics [i]); 3675 ANHE_at_cache (periodics [i]);
2170 } 3676 }
2171 3677
2172 reheap (periodics, periodiccnt); 3678 reheap (periodics, periodiccnt);
2173} 3679}
2174#endif 3680#endif
2175 3681
2176/* adjust all timers by a given offset */ 3682/* adjust all timers by a given offset */
2177static void noinline 3683ecb_noinline ecb_cold
3684static void
2178timers_reschedule (EV_P_ ev_tstamp adjust) 3685timers_reschedule (EV_P_ ev_tstamp adjust)
2179{ 3686{
2180 int i; 3687 int i;
2181 3688
2182 for (i = 0; i < timercnt; ++i) 3689 for (i = 0; i < timercnt; ++i)
… …
2191/* also detect if there was a timejump, and act accordingly */ 3698/* also detect if there was a timejump, and act accordingly */
2192inline_speed void 3699inline_speed void
2193time_update (EV_P_ ev_tstamp max_block) 3700time_update (EV_P_ ev_tstamp max_block)
2194{ 3701{
2195#if EV_USE_MONOTONIC 3702#if EV_USE_MONOTONIC
2196 if (expect_true (have_monotonic)) 3703 if (ecb_expect_true (have_monotonic))
2197 { 3704 {
2198 int i; 3705 int i;
2199 ev_tstamp odiff = rtmn_diff; 3706 ev_tstamp odiff = rtmn_diff;
2200 3707
2201 mn_now = get_clock (); 3708 mn_now = get_clock ();
2202 3709
2203 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3710 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
2204 /* interpolate in the meantime */ 3711 /* interpolate in the meantime */
2205 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)))
2206 { 3713 {
2207 ev_rt_now = rtmn_diff + mn_now; 3714 ev_rt_now = rtmn_diff + mn_now;
2208 return; 3715 return;
2209 } 3716 }
2210 3717
… …
2219 * 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
2220 * in the unlikely event of having been preempted here. 3727 * in the unlikely event of having been preempted here.
2221 */ 3728 */
2222 for (i = 4; --i; ) 3729 for (i = 4; --i; )
2223 { 3730 {
3731 ev_tstamp diff;
2224 rtmn_diff = ev_rt_now - mn_now; 3732 rtmn_diff = ev_rt_now - mn_now;
2225 3733
2226 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)))
2227 return; /* all is well */ 3737 return; /* all is well */
2228 3738
2229 ev_rt_now = ev_time (); 3739 ev_rt_now = ev_time ();
2230 mn_now = get_clock (); 3740 mn_now = get_clock ();
2231 now_floor = mn_now; 3741 now_floor = mn_now;
… …
2240 else 3750 else
2241#endif 3751#endif
2242 { 3752 {
2243 ev_rt_now = ev_time (); 3753 ev_rt_now = ev_time ();
2244 3754
2245 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)))
2246 { 3756 {
2247 /* 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 */
2248 timers_reschedule (EV_A_ ev_rt_now - mn_now); 3758 timers_reschedule (EV_A_ ev_rt_now - mn_now);
2249#if EV_PERIODIC_ENABLE 3759#if EV_PERIODIC_ENABLE
2250 periodics_reschedule (EV_A); 3760 periodics_reschedule (EV_A);
… …
2253 3763
2254 mn_now = ev_rt_now; 3764 mn_now = ev_rt_now;
2255 } 3765 }
2256} 3766}
2257 3767
2258void 3768int
2259ev_loop (EV_P_ int flags) 3769ev_run (EV_P_ int flags)
2260{ 3770{
2261#if EV_MINIMAL < 2 3771#if EV_FEATURE_API
2262 ++loop_depth; 3772 ++loop_depth;
2263#endif 3773#endif
2264 3774
2265 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));
2266 3776
2267 loop_done = EVUNLOOP_CANCEL; 3777 loop_done = EVBREAK_CANCEL;
2268 3778
2269 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 */
2270 3780
2271 do 3781 do
2272 { 3782 {
2273#if EV_VERIFY >= 2 3783#if EV_VERIFY >= 2
2274 ev_loop_verify (EV_A); 3784 ev_verify (EV_A);
2275#endif 3785#endif
2276 3786
2277#ifndef _WIN32 3787#ifndef _WIN32
2278 if (expect_false (curpid)) /* penalise the forking check even more */ 3788 if (ecb_expect_false (curpid)) /* penalise the forking check even more */
2279 if (expect_false (getpid () != curpid)) 3789 if (ecb_expect_false (getpid () != curpid))
2280 { 3790 {
2281 curpid = getpid (); 3791 curpid = getpid ();
2282 postfork = 1; 3792 postfork = 1;
2283 } 3793 }
2284#endif 3794#endif
2285 3795
2286#if EV_FORK_ENABLE 3796#if EV_FORK_ENABLE
2287 /* we might have forked, so queue fork handlers */ 3797 /* we might have forked, so queue fork handlers */
2288 if (expect_false (postfork)) 3798 if (ecb_expect_false (postfork))
2289 if (forkcnt) 3799 if (forkcnt)
2290 { 3800 {
2291 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3801 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2292 EV_INVOKE_PENDING; 3802 EV_INVOKE_PENDING;
2293 } 3803 }
2294#endif 3804#endif
2295 3805
3806#if EV_PREPARE_ENABLE
2296 /* queue prepare watchers (and execute them) */ 3807 /* queue prepare watchers (and execute them) */
2297 if (expect_false (preparecnt)) 3808 if (ecb_expect_false (preparecnt))
2298 { 3809 {
2299 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3810 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2300 EV_INVOKE_PENDING; 3811 EV_INVOKE_PENDING;
2301 } 3812 }
3813#endif
2302 3814
2303 if (expect_false (loop_done)) 3815 if (ecb_expect_false (loop_done))
2304 break; 3816 break;
2305 3817
2306 /* we might have forked, so reify kernel state if necessary */ 3818 /* we might have forked, so reify kernel state if necessary */
2307 if (expect_false (postfork)) 3819 if (ecb_expect_false (postfork))
2308 loop_fork (EV_A); 3820 loop_fork (EV_A);
2309 3821
2310 /* update fd-related kernel structures */ 3822 /* update fd-related kernel structures */
2311 fd_reify (EV_A); 3823 fd_reify (EV_A);
2312 3824
2313 /* calculate blocking time */ 3825 /* calculate blocking time */
2314 { 3826 {
2315 ev_tstamp waittime = 0.; 3827 ev_tstamp waittime = 0.;
2316 ev_tstamp sleeptime = 0.; 3828 ev_tstamp sleeptime = 0.;
2317 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
2318 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3841 if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2319 { 3842 {
2320 /* remember old timestamp for io_blocktime calculation */
2321 ev_tstamp prev_mn_now = mn_now;
2322
2323 /* update time to cancel out callback processing overhead */
2324 time_update (EV_A_ 1e100);
2325
2326 waittime = MAX_BLOCKTIME; 3843 waittime = EV_TS_CONST (MAX_BLOCKTIME);
2327 3844
2328 if (timercnt) 3845 if (timercnt)
2329 { 3846 {
2330 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3847 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2331 if (waittime > to) waittime = to; 3848 if (waittime > to) waittime = to;
2332 } 3849 }
2333 3850
2334#if EV_PERIODIC_ENABLE 3851#if EV_PERIODIC_ENABLE
2335 if (periodiccnt) 3852 if (periodiccnt)
2336 { 3853 {
2337 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3854 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2338 if (waittime > to) waittime = to; 3855 if (waittime > to) waittime = to;
2339 } 3856 }
2340#endif 3857#endif
2341 3858
2342 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3859 /* don't let timeouts decrease the waittime below timeout_blocktime */
2343 if (expect_false (waittime < timeout_blocktime)) 3860 if (ecb_expect_false (waittime < timeout_blocktime))
2344 waittime = timeout_blocktime; 3861 waittime = timeout_blocktime;
2345 3862
3863 /* at this point, we NEED to wait, so we have to ensure */
3864 /* to pass a minimum nonzero value to the backend */
3865 if (ecb_expect_false (waittime < backend_mintime))
3866 waittime = backend_mintime;
3867
2346 /* extra check because io_blocktime is commonly 0 */ 3868 /* extra check because io_blocktime is commonly 0 */
2347 if (expect_false (io_blocktime)) 3869 if (ecb_expect_false (io_blocktime))
2348 { 3870 {
2349 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3871 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2350 3872
2351 if (sleeptime > waittime - backend_fudge) 3873 if (sleeptime > waittime - backend_mintime)
2352 sleeptime = waittime - backend_fudge; 3874 sleeptime = waittime - backend_mintime;
2353 3875
2354 if (expect_true (sleeptime > 0.)) 3876 if (ecb_expect_true (sleeptime > EV_TS_CONST (0.)))
2355 { 3877 {
2356 ev_sleep (sleeptime); 3878 ev_sleep (sleeptime);
2357 waittime -= sleeptime; 3879 waittime -= sleeptime;
2358 } 3880 }
2359 } 3881 }
2360 } 3882 }
2361 3883
2362#if EV_MINIMAL < 2 3884#if EV_FEATURE_API
2363 ++loop_count; 3885 ++loop_count;
2364#endif 3886#endif
2365 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3887 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2366 backend_poll (EV_A_ waittime); 3888 backend_poll (EV_A_ waittime);
2367 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 3889 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3890
3891 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3892
3893 ECB_MEMORY_FENCE_ACQUIRE;
3894 if (pipe_write_skipped)
3895 {
3896 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3897 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3898 }
2368 3899
2369 /* update ev_rt_now, do magic */ 3900 /* update ev_rt_now, do magic */
2370 time_update (EV_A_ waittime + sleeptime); 3901 time_update (EV_A_ waittime + sleeptime);
2371 } 3902 }
2372 3903
… …
2379#if EV_IDLE_ENABLE 3910#if EV_IDLE_ENABLE
2380 /* queue idle watchers unless other events are pending */ 3911 /* queue idle watchers unless other events are pending */
2381 idle_reify (EV_A); 3912 idle_reify (EV_A);
2382#endif 3913#endif
2383 3914
3915#if EV_CHECK_ENABLE
2384 /* queue check watchers, to be executed first */ 3916 /* queue check watchers, to be executed first */
2385 if (expect_false (checkcnt)) 3917 if (ecb_expect_false (checkcnt))
2386 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3918 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3919#endif
2387 3920
2388 EV_INVOKE_PENDING; 3921 EV_INVOKE_PENDING;
2389 } 3922 }
2390 while (expect_true ( 3923 while (ecb_expect_true (
2391 activecnt 3924 activecnt
2392 && !loop_done 3925 && !loop_done
2393 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3926 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2394 )); 3927 ));
2395 3928
2396 if (loop_done == EVUNLOOP_ONE) 3929 if (loop_done == EVBREAK_ONE)
2397 loop_done = EVUNLOOP_CANCEL; 3930 loop_done = EVBREAK_CANCEL;
2398 3931
2399#if EV_MINIMAL < 2 3932#if EV_FEATURE_API
2400 --loop_depth; 3933 --loop_depth;
2401#endif 3934#endif
2402}
2403 3935
3936 return activecnt;
3937}
3938
2404void 3939void
2405ev_unloop (EV_P_ int how) 3940ev_break (EV_P_ int how) EV_NOEXCEPT
2406{ 3941{
2407 loop_done = how; 3942 loop_done = how;
2408} 3943}
2409 3944
2410void 3945void
2411ev_ref (EV_P) 3946ev_ref (EV_P) EV_NOEXCEPT
2412{ 3947{
2413 ++activecnt; 3948 ++activecnt;
2414} 3949}
2415 3950
2416void 3951void
2417ev_unref (EV_P) 3952ev_unref (EV_P) EV_NOEXCEPT
2418{ 3953{
2419 --activecnt; 3954 --activecnt;
2420} 3955}
2421 3956
2422void 3957void
2423ev_now_update (EV_P) 3958ev_now_update (EV_P) EV_NOEXCEPT
2424{ 3959{
2425 time_update (EV_A_ 1e100); 3960 time_update (EV_A_ EV_TSTAMP_HUGE);
2426} 3961}
2427 3962
2428void 3963void
2429ev_suspend (EV_P) 3964ev_suspend (EV_P) EV_NOEXCEPT
2430{ 3965{
2431 ev_now_update (EV_A); 3966 ev_now_update (EV_A);
2432} 3967}
2433 3968
2434void 3969void
2435ev_resume (EV_P) 3970ev_resume (EV_P) EV_NOEXCEPT
2436{ 3971{
2437 ev_tstamp mn_prev = mn_now; 3972 ev_tstamp mn_prev = mn_now;
2438 3973
2439 ev_now_update (EV_A); 3974 ev_now_update (EV_A);
2440 timers_reschedule (EV_A_ mn_now - mn_prev); 3975 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2457inline_size void 3992inline_size void
2458wlist_del (WL *head, WL elem) 3993wlist_del (WL *head, WL elem)
2459{ 3994{
2460 while (*head) 3995 while (*head)
2461 { 3996 {
2462 if (expect_true (*head == elem)) 3997 if (ecb_expect_true (*head == elem))
2463 { 3998 {
2464 *head = elem->next; 3999 *head = elem->next;
2465 break; 4000 break;
2466 } 4001 }
2467 4002
… …
2479 w->pending = 0; 4014 w->pending = 0;
2480 } 4015 }
2481} 4016}
2482 4017
2483int 4018int
2484ev_clear_pending (EV_P_ void *w) 4019ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
2485{ 4020{
2486 W w_ = (W)w; 4021 W w_ = (W)w;
2487 int pending = w_->pending; 4022 int pending = w_->pending;
2488 4023
2489 if (expect_true (pending)) 4024 if (ecb_expect_true (pending))
2490 { 4025 {
2491 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 4026 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2492 p->w = (W)&pending_w; 4027 p->w = (W)&pending_w;
2493 w_->pending = 0; 4028 w_->pending = 0;
2494 return p->events; 4029 return p->events;
… …
2521 w->active = 0; 4056 w->active = 0;
2522} 4057}
2523 4058
2524/*****************************************************************************/ 4059/*****************************************************************************/
2525 4060
2526void noinline 4061ecb_noinline
4062void
2527ev_io_start (EV_P_ ev_io *w) 4063ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
2528{ 4064{
2529 int fd = w->fd; 4065 int fd = w->fd;
2530 4066
2531 if (expect_false (ev_is_active (w))) 4067 if (ecb_expect_false (ev_is_active (w)))
2532 return; 4068 return;
2533 4069
2534 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 4070 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2535 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 4071 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2536 4072
4073#if EV_VERIFY >= 2
4074 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
4075#endif
2537 EV_FREQUENT_CHECK; 4076 EV_FREQUENT_CHECK;
2538 4077
2539 ev_start (EV_A_ (W)w, 1); 4078 ev_start (EV_A_ (W)w, 1);
2540 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 4079 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
2541 wlist_add (&anfds[fd].head, (WL)w); 4080 wlist_add (&anfds[fd].head, (WL)w);
4081
4082 /* common bug, apparently */
4083 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
2542 4084
2543 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 4085 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2544 w->events &= ~EV__IOFDSET; 4086 w->events &= ~EV__IOFDSET;
2545 4087
2546 EV_FREQUENT_CHECK; 4088 EV_FREQUENT_CHECK;
2547} 4089}
2548 4090
2549void noinline 4091ecb_noinline
4092void
2550ev_io_stop (EV_P_ ev_io *w) 4093ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
2551{ 4094{
2552 clear_pending (EV_A_ (W)w); 4095 clear_pending (EV_A_ (W)w);
2553 if (expect_false (!ev_is_active (w))) 4096 if (ecb_expect_false (!ev_is_active (w)))
2554 return; 4097 return;
2555 4098
2556 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 4099 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2557 4100
4101#if EV_VERIFY >= 2
4102 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
4103#endif
2558 EV_FREQUENT_CHECK; 4104 EV_FREQUENT_CHECK;
2559 4105
2560 wlist_del (&anfds[w->fd].head, (WL)w); 4106 wlist_del (&anfds[w->fd].head, (WL)w);
2561 ev_stop (EV_A_ (W)w); 4107 ev_stop (EV_A_ (W)w);
2562 4108
2563 fd_change (EV_A_ w->fd, 1); 4109 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2564 4110
2565 EV_FREQUENT_CHECK; 4111 EV_FREQUENT_CHECK;
2566} 4112}
2567 4113
2568void noinline 4114ecb_noinline
4115void
2569ev_timer_start (EV_P_ ev_timer *w) 4116ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
2570{ 4117{
2571 if (expect_false (ev_is_active (w))) 4118 if (ecb_expect_false (ev_is_active (w)))
2572 return; 4119 return;
2573 4120
2574 ev_at (w) += mn_now; 4121 ev_at (w) += mn_now;
2575 4122
2576 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 4123 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2577 4124
2578 EV_FREQUENT_CHECK; 4125 EV_FREQUENT_CHECK;
2579 4126
2580 ++timercnt; 4127 ++timercnt;
2581 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 4128 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
2582 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 4129 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
2583 ANHE_w (timers [ev_active (w)]) = (WT)w; 4130 ANHE_w (timers [ev_active (w)]) = (WT)w;
2584 ANHE_at_cache (timers [ev_active (w)]); 4131 ANHE_at_cache (timers [ev_active (w)]);
2585 upheap (timers, ev_active (w)); 4132 upheap (timers, ev_active (w));
2586 4133
2587 EV_FREQUENT_CHECK; 4134 EV_FREQUENT_CHECK;
2588 4135
2589 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 4136 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2590} 4137}
2591 4138
2592void noinline 4139ecb_noinline
4140void
2593ev_timer_stop (EV_P_ ev_timer *w) 4141ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
2594{ 4142{
2595 clear_pending (EV_A_ (W)w); 4143 clear_pending (EV_A_ (W)w);
2596 if (expect_false (!ev_is_active (w))) 4144 if (ecb_expect_false (!ev_is_active (w)))
2597 return; 4145 return;
2598 4146
2599 EV_FREQUENT_CHECK; 4147 EV_FREQUENT_CHECK;
2600 4148
2601 { 4149 {
… …
2603 4151
2604 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 4152 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2605 4153
2606 --timercnt; 4154 --timercnt;
2607 4155
2608 if (expect_true (active < timercnt + HEAP0)) 4156 if (ecb_expect_true (active < timercnt + HEAP0))
2609 { 4157 {
2610 timers [active] = timers [timercnt + HEAP0]; 4158 timers [active] = timers [timercnt + HEAP0];
2611 adjustheap (timers, timercnt, active); 4159 adjustheap (timers, timercnt, active);
2612 } 4160 }
2613 } 4161 }
… …
2617 ev_stop (EV_A_ (W)w); 4165 ev_stop (EV_A_ (W)w);
2618 4166
2619 EV_FREQUENT_CHECK; 4167 EV_FREQUENT_CHECK;
2620} 4168}
2621 4169
2622void noinline 4170ecb_noinline
4171void
2623ev_timer_again (EV_P_ ev_timer *w) 4172ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
2624{ 4173{
2625 EV_FREQUENT_CHECK; 4174 EV_FREQUENT_CHECK;
4175
4176 clear_pending (EV_A_ (W)w);
2626 4177
2627 if (ev_is_active (w)) 4178 if (ev_is_active (w))
2628 { 4179 {
2629 if (w->repeat) 4180 if (w->repeat)
2630 { 4181 {
… …
2643 4194
2644 EV_FREQUENT_CHECK; 4195 EV_FREQUENT_CHECK;
2645} 4196}
2646 4197
2647ev_tstamp 4198ev_tstamp
2648ev_timer_remaining (EV_P_ ev_timer *w) 4199ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
2649{ 4200{
2650 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4201 return ev_at (w) - (ev_is_active (w) ? mn_now : EV_TS_CONST (0.));
2651} 4202}
2652 4203
2653#if EV_PERIODIC_ENABLE 4204#if EV_PERIODIC_ENABLE
2654void noinline 4205ecb_noinline
4206void
2655ev_periodic_start (EV_P_ ev_periodic *w) 4207ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
2656{ 4208{
2657 if (expect_false (ev_is_active (w))) 4209 if (ecb_expect_false (ev_is_active (w)))
2658 return; 4210 return;
2659 4211
2660 if (w->reschedule_cb) 4212 if (w->reschedule_cb)
2661 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4213 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2662 else if (w->interval) 4214 else if (w->interval)
2663 { 4215 {
2664 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 4216 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2665 /* this formula differs from the one in periodic_reify because we do not always round up */ 4217 periodic_recalc (EV_A_ w);
2666 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2667 } 4218 }
2668 else 4219 else
2669 ev_at (w) = w->offset; 4220 ev_at (w) = w->offset;
2670 4221
2671 EV_FREQUENT_CHECK; 4222 EV_FREQUENT_CHECK;
2672 4223
2673 ++periodiccnt; 4224 ++periodiccnt;
2674 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4225 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2675 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4226 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
2676 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4227 ANHE_w (periodics [ev_active (w)]) = (WT)w;
2677 ANHE_at_cache (periodics [ev_active (w)]); 4228 ANHE_at_cache (periodics [ev_active (w)]);
2678 upheap (periodics, ev_active (w)); 4229 upheap (periodics, ev_active (w));
2679 4230
2680 EV_FREQUENT_CHECK; 4231 EV_FREQUENT_CHECK;
2681 4232
2682 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4233 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2683} 4234}
2684 4235
2685void noinline 4236ecb_noinline
4237void
2686ev_periodic_stop (EV_P_ ev_periodic *w) 4238ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
2687{ 4239{
2688 clear_pending (EV_A_ (W)w); 4240 clear_pending (EV_A_ (W)w);
2689 if (expect_false (!ev_is_active (w))) 4241 if (ecb_expect_false (!ev_is_active (w)))
2690 return; 4242 return;
2691 4243
2692 EV_FREQUENT_CHECK; 4244 EV_FREQUENT_CHECK;
2693 4245
2694 { 4246 {
… …
2696 4248
2697 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 4249 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2698 4250
2699 --periodiccnt; 4251 --periodiccnt;
2700 4252
2701 if (expect_true (active < periodiccnt + HEAP0)) 4253 if (ecb_expect_true (active < periodiccnt + HEAP0))
2702 { 4254 {
2703 periodics [active] = periodics [periodiccnt + HEAP0]; 4255 periodics [active] = periodics [periodiccnt + HEAP0];
2704 adjustheap (periodics, periodiccnt, active); 4256 adjustheap (periodics, periodiccnt, active);
2705 } 4257 }
2706 } 4258 }
… …
2708 ev_stop (EV_A_ (W)w); 4260 ev_stop (EV_A_ (W)w);
2709 4261
2710 EV_FREQUENT_CHECK; 4262 EV_FREQUENT_CHECK;
2711} 4263}
2712 4264
2713void noinline 4265ecb_noinline
4266void
2714ev_periodic_again (EV_P_ ev_periodic *w) 4267ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
2715{ 4268{
2716 /* TODO: use adjustheap and recalculation */ 4269 /* TODO: use adjustheap and recalculation */
2717 ev_periodic_stop (EV_A_ w); 4270 ev_periodic_stop (EV_A_ w);
2718 ev_periodic_start (EV_A_ w); 4271 ev_periodic_start (EV_A_ w);
2719} 4272}
… …
2721 4274
2722#ifndef SA_RESTART 4275#ifndef SA_RESTART
2723# define SA_RESTART 0 4276# define SA_RESTART 0
2724#endif 4277#endif
2725 4278
2726void noinline 4279#if EV_SIGNAL_ENABLE
4280
4281ecb_noinline
4282void
2727ev_signal_start (EV_P_ ev_signal *w) 4283ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
2728{ 4284{
2729 if (expect_false (ev_is_active (w))) 4285 if (ecb_expect_false (ev_is_active (w)))
2730 return; 4286 return;
2731 4287
2732 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4288 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2733 4289
2734#if EV_MULTIPLICITY 4290#if EV_MULTIPLICITY
2735 assert (("libev: a signal must not be attached to two different loops", 4291 assert (("libev: a signal must not be attached to two different loops",
2736 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4292 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2737 4293
2738 signals [w->signum - 1].loop = EV_A; 4294 signals [w->signum - 1].loop = EV_A;
4295 ECB_MEMORY_FENCE_RELEASE;
2739#endif 4296#endif
2740 4297
2741 EV_FREQUENT_CHECK; 4298 EV_FREQUENT_CHECK;
2742 4299
2743#if EV_USE_SIGNALFD 4300#if EV_USE_SIGNALFD
… …
2790 sa.sa_handler = ev_sighandler; 4347 sa.sa_handler = ev_sighandler;
2791 sigfillset (&sa.sa_mask); 4348 sigfillset (&sa.sa_mask);
2792 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 4349 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2793 sigaction (w->signum, &sa, 0); 4350 sigaction (w->signum, &sa, 0);
2794 4351
4352 if (origflags & EVFLAG_NOSIGMASK)
4353 {
2795 sigemptyset (&sa.sa_mask); 4354 sigemptyset (&sa.sa_mask);
2796 sigaddset (&sa.sa_mask, w->signum); 4355 sigaddset (&sa.sa_mask, w->signum);
2797 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 4356 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
4357 }
2798#endif 4358#endif
2799 } 4359 }
2800 4360
2801 EV_FREQUENT_CHECK; 4361 EV_FREQUENT_CHECK;
2802} 4362}
2803 4363
2804void noinline 4364ecb_noinline
4365void
2805ev_signal_stop (EV_P_ ev_signal *w) 4366ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
2806{ 4367{
2807 clear_pending (EV_A_ (W)w); 4368 clear_pending (EV_A_ (W)w);
2808 if (expect_false (!ev_is_active (w))) 4369 if (ecb_expect_false (!ev_is_active (w)))
2809 return; 4370 return;
2810 4371
2811 EV_FREQUENT_CHECK; 4372 EV_FREQUENT_CHECK;
2812 4373
2813 wlist_del (&signals [w->signum - 1].head, (WL)w); 4374 wlist_del (&signals [w->signum - 1].head, (WL)w);
… …
2836 } 4397 }
2837 4398
2838 EV_FREQUENT_CHECK; 4399 EV_FREQUENT_CHECK;
2839} 4400}
2840 4401
4402#endif
4403
4404#if EV_CHILD_ENABLE
4405
2841void 4406void
2842ev_child_start (EV_P_ ev_child *w) 4407ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
2843{ 4408{
2844#if EV_MULTIPLICITY 4409#if EV_MULTIPLICITY
2845 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4410 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2846#endif 4411#endif
2847 if (expect_false (ev_is_active (w))) 4412 if (ecb_expect_false (ev_is_active (w)))
2848 return; 4413 return;
2849 4414
2850 EV_FREQUENT_CHECK; 4415 EV_FREQUENT_CHECK;
2851 4416
2852 ev_start (EV_A_ (W)w, 1); 4417 ev_start (EV_A_ (W)w, 1);
2853 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4418 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2854 4419
2855 EV_FREQUENT_CHECK; 4420 EV_FREQUENT_CHECK;
2856} 4421}
2857 4422
2858void 4423void
2859ev_child_stop (EV_P_ ev_child *w) 4424ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
2860{ 4425{
2861 clear_pending (EV_A_ (W)w); 4426 clear_pending (EV_A_ (W)w);
2862 if (expect_false (!ev_is_active (w))) 4427 if (ecb_expect_false (!ev_is_active (w)))
2863 return; 4428 return;
2864 4429
2865 EV_FREQUENT_CHECK; 4430 EV_FREQUENT_CHECK;
2866 4431
2867 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4432 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2868 ev_stop (EV_A_ (W)w); 4433 ev_stop (EV_A_ (W)w);
2869 4434
2870 EV_FREQUENT_CHECK; 4435 EV_FREQUENT_CHECK;
2871} 4436}
4437
4438#endif
2872 4439
2873#if EV_STAT_ENABLE 4440#if EV_STAT_ENABLE
2874 4441
2875# ifdef _WIN32 4442# ifdef _WIN32
2876# undef lstat 4443# undef lstat
… …
2879 4446
2880#define DEF_STAT_INTERVAL 5.0074891 4447#define DEF_STAT_INTERVAL 5.0074891
2881#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4448#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2882#define MIN_STAT_INTERVAL 0.1074891 4449#define MIN_STAT_INTERVAL 0.1074891
2883 4450
2884static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4451ecb_noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2885 4452
2886#if EV_USE_INOTIFY 4453#if EV_USE_INOTIFY
2887 4454
2888/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ 4455/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
2889# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4456# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2890 4457
2891static void noinline 4458ecb_noinline
4459static void
2892infy_add (EV_P_ ev_stat *w) 4460infy_add (EV_P_ ev_stat *w)
2893{ 4461{
2894 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); 4462 w->wd = inotify_add_watch (fs_fd, w->path,
4463 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4464 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4465 | IN_DONT_FOLLOW | IN_MASK_ADD);
2895 4466
2896 if (w->wd >= 0) 4467 if (w->wd >= 0)
2897 { 4468 {
2898 struct statfs sfs; 4469 struct statfs sfs;
2899 4470
… …
2903 4474
2904 if (!fs_2625) 4475 if (!fs_2625)
2905 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4476 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2906 else if (!statfs (w->path, &sfs) 4477 else if (!statfs (w->path, &sfs)
2907 && (sfs.f_type == 0x1373 /* devfs */ 4478 && (sfs.f_type == 0x1373 /* devfs */
4479 || sfs.f_type == 0x4006 /* fat */
4480 || sfs.f_type == 0x4d44 /* msdos */
2908 || sfs.f_type == 0xEF53 /* ext2/3 */ 4481 || sfs.f_type == 0xEF53 /* ext2/3 */
4482 || sfs.f_type == 0x72b6 /* jffs2 */
4483 || sfs.f_type == 0x858458f6 /* ramfs */
4484 || sfs.f_type == 0x5346544e /* ntfs */
2909 || sfs.f_type == 0x3153464a /* jfs */ 4485 || sfs.f_type == 0x3153464a /* jfs */
4486 || sfs.f_type == 0x9123683e /* btrfs */
2910 || sfs.f_type == 0x52654973 /* reiser3 */ 4487 || sfs.f_type == 0x52654973 /* reiser3 */
2911 || sfs.f_type == 0x01021994 /* tempfs */ 4488 || sfs.f_type == 0x01021994 /* tmpfs */
2912 || sfs.f_type == 0x58465342 /* xfs */)) 4489 || sfs.f_type == 0x58465342 /* xfs */))
2913 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4490 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
2914 else 4491 else
2915 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4492 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2916 } 4493 }
… …
2937 if (!pend || pend == path) 4514 if (!pend || pend == path)
2938 break; 4515 break;
2939 4516
2940 *pend = 0; 4517 *pend = 0;
2941 w->wd = inotify_add_watch (fs_fd, path, mask); 4518 w->wd = inotify_add_watch (fs_fd, path, mask);
2942 } 4519 }
2943 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 4520 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2944 } 4521 }
2945 } 4522 }
2946 4523
2947 if (w->wd >= 0) 4524 if (w->wd >= 0)
2948 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4525 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2949 4526
2950 /* now re-arm timer, if required */ 4527 /* now re-arm timer, if required */
2951 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4528 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2952 ev_timer_again (EV_A_ &w->timer); 4529 ev_timer_again (EV_A_ &w->timer);
2953 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4530 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2954} 4531}
2955 4532
2956static void noinline 4533ecb_noinline
4534static void
2957infy_del (EV_P_ ev_stat *w) 4535infy_del (EV_P_ ev_stat *w)
2958{ 4536{
2959 int slot; 4537 int slot;
2960 int wd = w->wd; 4538 int wd = w->wd;
2961 4539
2962 if (wd < 0) 4540 if (wd < 0)
2963 return; 4541 return;
2964 4542
2965 w->wd = -2; 4543 w->wd = -2;
2966 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 4544 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2967 wlist_del (&fs_hash [slot].head, (WL)w); 4545 wlist_del (&fs_hash [slot].head, (WL)w);
2968 4546
2969 /* remove this watcher, if others are watching it, they will rearm */ 4547 /* remove this watcher, if others are watching it, they will rearm */
2970 inotify_rm_watch (fs_fd, wd); 4548 inotify_rm_watch (fs_fd, wd);
2971} 4549}
2972 4550
2973static void noinline 4551ecb_noinline
4552static void
2974infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4553infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2975{ 4554{
2976 if (slot < 0) 4555 if (slot < 0)
2977 /* overflow, need to check for all hash slots */ 4556 /* overflow, need to check for all hash slots */
2978 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4557 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2979 infy_wd (EV_A_ slot, wd, ev); 4558 infy_wd (EV_A_ slot, wd, ev);
2980 else 4559 else
2981 { 4560 {
2982 WL w_; 4561 WL w_;
2983 4562
2984 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 4563 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2985 { 4564 {
2986 ev_stat *w = (ev_stat *)w_; 4565 ev_stat *w = (ev_stat *)w_;
2987 w_ = w_->next; /* lets us remove this watcher and all before it */ 4566 w_ = w_->next; /* lets us remove this watcher and all before it */
2988 4567
2989 if (w->wd == wd || wd == -1) 4568 if (w->wd == wd || wd == -1)
2990 { 4569 {
2991 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 4570 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2992 { 4571 {
2993 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4572 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2994 w->wd = -1; 4573 w->wd = -1;
2995 infy_add (EV_A_ w); /* re-add, no matter what */ 4574 infy_add (EV_A_ w); /* re-add, no matter what */
2996 } 4575 }
2997 4576
2998 stat_timer_cb (EV_A_ &w->timer, 0); 4577 stat_timer_cb (EV_A_ &w->timer, 0);
… …
3014 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4593 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3015 ofs += sizeof (struct inotify_event) + ev->len; 4594 ofs += sizeof (struct inotify_event) + ev->len;
3016 } 4595 }
3017} 4596}
3018 4597
3019inline_size unsigned int
3020ev_linux_version (void)
3021{
3022 struct utsname buf;
3023 unsigned int v;
3024 int i;
3025 char *p = buf.release;
3026
3027 if (uname (&buf))
3028 return 0;
3029
3030 for (i = 3+1; --i; )
3031 {
3032 unsigned int c = 0;
3033
3034 for (;;)
3035 {
3036 if (*p >= '0' && *p <= '9')
3037 c = c * 10 + *p++ - '0';
3038 else
3039 {
3040 p += *p == '.';
3041 break;
3042 }
3043 }
3044
3045 v = (v << 8) | c;
3046 }
3047
3048 return v;
3049}
3050
3051inline_size void 4598inline_size ecb_cold
4599void
3052ev_check_2625 (EV_P) 4600ev_check_2625 (EV_P)
3053{ 4601{
3054 /* kernels < 2.6.25 are borked 4602 /* kernels < 2.6.25 are borked
3055 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4603 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3056 */ 4604 */
… …
3061} 4609}
3062 4610
3063inline_size int 4611inline_size int
3064infy_newfd (void) 4612infy_newfd (void)
3065{ 4613{
3066#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4614#if defined IN_CLOEXEC && defined IN_NONBLOCK
3067 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4615 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3068 if (fd >= 0) 4616 if (fd >= 0)
3069 return fd; 4617 return fd;
3070#endif 4618#endif
3071 return inotify_init (); 4619 return inotify_init ();
… …
3112 ev_io_set (&fs_w, fs_fd, EV_READ); 4660 ev_io_set (&fs_w, fs_fd, EV_READ);
3113 ev_io_start (EV_A_ &fs_w); 4661 ev_io_start (EV_A_ &fs_w);
3114 ev_unref (EV_A); 4662 ev_unref (EV_A);
3115 } 4663 }
3116 4664
3117 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4665 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
3118 { 4666 {
3119 WL w_ = fs_hash [slot].head; 4667 WL w_ = fs_hash [slot].head;
3120 fs_hash [slot].head = 0; 4668 fs_hash [slot].head = 0;
3121 4669
3122 while (w_) 4670 while (w_)
… …
3146#else 4694#else
3147# define EV_LSTAT(p,b) lstat (p, b) 4695# define EV_LSTAT(p,b) lstat (p, b)
3148#endif 4696#endif
3149 4697
3150void 4698void
3151ev_stat_stat (EV_P_ ev_stat *w) 4699ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
3152{ 4700{
3153 if (lstat (w->path, &w->attr) < 0) 4701 if (lstat (w->path, &w->attr) < 0)
3154 w->attr.st_nlink = 0; 4702 w->attr.st_nlink = 0;
3155 else if (!w->attr.st_nlink) 4703 else if (!w->attr.st_nlink)
3156 w->attr.st_nlink = 1; 4704 w->attr.st_nlink = 1;
3157} 4705}
3158 4706
3159static void noinline 4707ecb_noinline
4708static void
3160stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4709stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3161{ 4710{
3162 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4711 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3163 4712
3164 ev_statdata prev = w->attr; 4713 ev_statdata prev = w->attr;
… …
3195 ev_feed_event (EV_A_ w, EV_STAT); 4744 ev_feed_event (EV_A_ w, EV_STAT);
3196 } 4745 }
3197} 4746}
3198 4747
3199void 4748void
3200ev_stat_start (EV_P_ ev_stat *w) 4749ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
3201{ 4750{
3202 if (expect_false (ev_is_active (w))) 4751 if (ecb_expect_false (ev_is_active (w)))
3203 return; 4752 return;
3204 4753
3205 ev_stat_stat (EV_A_ w); 4754 ev_stat_stat (EV_A_ w);
3206 4755
3207 if (w->interval < MIN_STAT_INTERVAL && w->interval) 4756 if (w->interval < MIN_STAT_INTERVAL && w->interval)
… …
3226 4775
3227 EV_FREQUENT_CHECK; 4776 EV_FREQUENT_CHECK;
3228} 4777}
3229 4778
3230void 4779void
3231ev_stat_stop (EV_P_ ev_stat *w) 4780ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
3232{ 4781{
3233 clear_pending (EV_A_ (W)w); 4782 clear_pending (EV_A_ (W)w);
3234 if (expect_false (!ev_is_active (w))) 4783 if (ecb_expect_false (!ev_is_active (w)))
3235 return; 4784 return;
3236 4785
3237 EV_FREQUENT_CHECK; 4786 EV_FREQUENT_CHECK;
3238 4787
3239#if EV_USE_INOTIFY 4788#if EV_USE_INOTIFY
… …
3252} 4801}
3253#endif 4802#endif
3254 4803
3255#if EV_IDLE_ENABLE 4804#if EV_IDLE_ENABLE
3256void 4805void
3257ev_idle_start (EV_P_ ev_idle *w) 4806ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
3258{ 4807{
3259 if (expect_false (ev_is_active (w))) 4808 if (ecb_expect_false (ev_is_active (w)))
3260 return; 4809 return;
3261 4810
3262 pri_adjust (EV_A_ (W)w); 4811 pri_adjust (EV_A_ (W)w);
3263 4812
3264 EV_FREQUENT_CHECK; 4813 EV_FREQUENT_CHECK;
… …
3267 int active = ++idlecnt [ABSPRI (w)]; 4816 int active = ++idlecnt [ABSPRI (w)];
3268 4817
3269 ++idleall; 4818 ++idleall;
3270 ev_start (EV_A_ (W)w, active); 4819 ev_start (EV_A_ (W)w, active);
3271 4820
3272 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 4821 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
3273 idles [ABSPRI (w)][active - 1] = w; 4822 idles [ABSPRI (w)][active - 1] = w;
3274 } 4823 }
3275 4824
3276 EV_FREQUENT_CHECK; 4825 EV_FREQUENT_CHECK;
3277} 4826}
3278 4827
3279void 4828void
3280ev_idle_stop (EV_P_ ev_idle *w) 4829ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
3281{ 4830{
3282 clear_pending (EV_A_ (W)w); 4831 clear_pending (EV_A_ (W)w);
3283 if (expect_false (!ev_is_active (w))) 4832 if (ecb_expect_false (!ev_is_active (w)))
3284 return; 4833 return;
3285 4834
3286 EV_FREQUENT_CHECK; 4835 EV_FREQUENT_CHECK;
3287 4836
3288 { 4837 {
… …
3297 4846
3298 EV_FREQUENT_CHECK; 4847 EV_FREQUENT_CHECK;
3299} 4848}
3300#endif 4849#endif
3301 4850
4851#if EV_PREPARE_ENABLE
3302void 4852void
3303ev_prepare_start (EV_P_ ev_prepare *w) 4853ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
3304{ 4854{
3305 if (expect_false (ev_is_active (w))) 4855 if (ecb_expect_false (ev_is_active (w)))
3306 return; 4856 return;
3307 4857
3308 EV_FREQUENT_CHECK; 4858 EV_FREQUENT_CHECK;
3309 4859
3310 ev_start (EV_A_ (W)w, ++preparecnt); 4860 ev_start (EV_A_ (W)w, ++preparecnt);
3311 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4861 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
3312 prepares [preparecnt - 1] = w; 4862 prepares [preparecnt - 1] = w;
3313 4863
3314 EV_FREQUENT_CHECK; 4864 EV_FREQUENT_CHECK;
3315} 4865}
3316 4866
3317void 4867void
3318ev_prepare_stop (EV_P_ ev_prepare *w) 4868ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
3319{ 4869{
3320 clear_pending (EV_A_ (W)w); 4870 clear_pending (EV_A_ (W)w);
3321 if (expect_false (!ev_is_active (w))) 4871 if (ecb_expect_false (!ev_is_active (w)))
3322 return; 4872 return;
3323 4873
3324 EV_FREQUENT_CHECK; 4874 EV_FREQUENT_CHECK;
3325 4875
3326 { 4876 {
… …
3332 4882
3333 ev_stop (EV_A_ (W)w); 4883 ev_stop (EV_A_ (W)w);
3334 4884
3335 EV_FREQUENT_CHECK; 4885 EV_FREQUENT_CHECK;
3336} 4886}
4887#endif
3337 4888
4889#if EV_CHECK_ENABLE
3338void 4890void
3339ev_check_start (EV_P_ ev_check *w) 4891ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
3340{ 4892{
3341 if (expect_false (ev_is_active (w))) 4893 if (ecb_expect_false (ev_is_active (w)))
3342 return; 4894 return;
3343 4895
3344 EV_FREQUENT_CHECK; 4896 EV_FREQUENT_CHECK;
3345 4897
3346 ev_start (EV_A_ (W)w, ++checkcnt); 4898 ev_start (EV_A_ (W)w, ++checkcnt);
3347 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 4899 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
3348 checks [checkcnt - 1] = w; 4900 checks [checkcnt - 1] = w;
3349 4901
3350 EV_FREQUENT_CHECK; 4902 EV_FREQUENT_CHECK;
3351} 4903}
3352 4904
3353void 4905void
3354ev_check_stop (EV_P_ ev_check *w) 4906ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
3355{ 4907{
3356 clear_pending (EV_A_ (W)w); 4908 clear_pending (EV_A_ (W)w);
3357 if (expect_false (!ev_is_active (w))) 4909 if (ecb_expect_false (!ev_is_active (w)))
3358 return; 4910 return;
3359 4911
3360 EV_FREQUENT_CHECK; 4912 EV_FREQUENT_CHECK;
3361 4913
3362 { 4914 {
… …
3368 4920
3369 ev_stop (EV_A_ (W)w); 4921 ev_stop (EV_A_ (W)w);
3370 4922
3371 EV_FREQUENT_CHECK; 4923 EV_FREQUENT_CHECK;
3372} 4924}
4925#endif
3373 4926
3374#if EV_EMBED_ENABLE 4927#if EV_EMBED_ENABLE
3375void noinline 4928ecb_noinline
4929void
3376ev_embed_sweep (EV_P_ ev_embed *w) 4930ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
3377{ 4931{
3378 ev_loop (w->other, EVLOOP_NONBLOCK); 4932 ev_run (w->other, EVRUN_NOWAIT);
3379} 4933}
3380 4934
3381static void 4935static void
3382embed_io_cb (EV_P_ ev_io *io, int revents) 4936embed_io_cb (EV_P_ ev_io *io, int revents)
3383{ 4937{
3384 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4938 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3385 4939
3386 if (ev_cb (w)) 4940 if (ev_cb (w))
3387 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4941 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3388 else 4942 else
3389 ev_loop (w->other, EVLOOP_NONBLOCK); 4943 ev_run (w->other, EVRUN_NOWAIT);
3390} 4944}
3391 4945
3392static void 4946static void
3393embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4947embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3394{ 4948{
… …
3398 EV_P = w->other; 4952 EV_P = w->other;
3399 4953
3400 while (fdchangecnt) 4954 while (fdchangecnt)
3401 { 4955 {
3402 fd_reify (EV_A); 4956 fd_reify (EV_A);
3403 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4957 ev_run (EV_A_ EVRUN_NOWAIT);
3404 } 4958 }
3405 } 4959 }
3406} 4960}
3407 4961
3408static void 4962static void
… …
3414 4968
3415 { 4969 {
3416 EV_P = w->other; 4970 EV_P = w->other;
3417 4971
3418 ev_loop_fork (EV_A); 4972 ev_loop_fork (EV_A);
3419 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4973 ev_run (EV_A_ EVRUN_NOWAIT);
3420 } 4974 }
3421 4975
3422 ev_embed_start (EV_A_ w); 4976 ev_embed_start (EV_A_ w);
3423} 4977}
3424 4978
… …
3429 ev_idle_stop (EV_A_ idle); 4983 ev_idle_stop (EV_A_ idle);
3430} 4984}
3431#endif 4985#endif
3432 4986
3433void 4987void
3434ev_embed_start (EV_P_ ev_embed *w) 4988ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
3435{ 4989{
3436 if (expect_false (ev_is_active (w))) 4990 if (ecb_expect_false (ev_is_active (w)))
3437 return; 4991 return;
3438 4992
3439 { 4993 {
3440 EV_P = w->other; 4994 EV_P = w->other;
3441 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4995 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
… …
3460 5014
3461 EV_FREQUENT_CHECK; 5015 EV_FREQUENT_CHECK;
3462} 5016}
3463 5017
3464void 5018void
3465ev_embed_stop (EV_P_ ev_embed *w) 5019ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
3466{ 5020{
3467 clear_pending (EV_A_ (W)w); 5021 clear_pending (EV_A_ (W)w);
3468 if (expect_false (!ev_is_active (w))) 5022 if (ecb_expect_false (!ev_is_active (w)))
3469 return; 5023 return;
3470 5024
3471 EV_FREQUENT_CHECK; 5025 EV_FREQUENT_CHECK;
3472 5026
3473 ev_io_stop (EV_A_ &w->io); 5027 ev_io_stop (EV_A_ &w->io);
… …
3480} 5034}
3481#endif 5035#endif
3482 5036
3483#if EV_FORK_ENABLE 5037#if EV_FORK_ENABLE
3484void 5038void
3485ev_fork_start (EV_P_ ev_fork *w) 5039ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
3486{ 5040{
3487 if (expect_false (ev_is_active (w))) 5041 if (ecb_expect_false (ev_is_active (w)))
3488 return; 5042 return;
3489 5043
3490 EV_FREQUENT_CHECK; 5044 EV_FREQUENT_CHECK;
3491 5045
3492 ev_start (EV_A_ (W)w, ++forkcnt); 5046 ev_start (EV_A_ (W)w, ++forkcnt);
3493 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 5047 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
3494 forks [forkcnt - 1] = w; 5048 forks [forkcnt - 1] = w;
3495 5049
3496 EV_FREQUENT_CHECK; 5050 EV_FREQUENT_CHECK;
3497} 5051}
3498 5052
3499void 5053void
3500ev_fork_stop (EV_P_ ev_fork *w) 5054ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
3501{ 5055{
3502 clear_pending (EV_A_ (W)w); 5056 clear_pending (EV_A_ (W)w);
3503 if (expect_false (!ev_is_active (w))) 5057 if (ecb_expect_false (!ev_is_active (w)))
3504 return; 5058 return;
3505 5059
3506 EV_FREQUENT_CHECK; 5060 EV_FREQUENT_CHECK;
3507 5061
3508 { 5062 {
… …
3516 5070
3517 EV_FREQUENT_CHECK; 5071 EV_FREQUENT_CHECK;
3518} 5072}
3519#endif 5073#endif
3520 5074
5075#if EV_CLEANUP_ENABLE
5076void
5077ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
5078{
5079 if (ecb_expect_false (ev_is_active (w)))
5080 return;
5081
5082 EV_FREQUENT_CHECK;
5083
5084 ev_start (EV_A_ (W)w, ++cleanupcnt);
5085 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
5086 cleanups [cleanupcnt - 1] = w;
5087
5088 /* cleanup watchers should never keep a refcount on the loop */
5089 ev_unref (EV_A);
5090 EV_FREQUENT_CHECK;
5091}
5092
5093void
5094ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
5095{
5096 clear_pending (EV_A_ (W)w);
5097 if (ecb_expect_false (!ev_is_active (w)))
5098 return;
5099
5100 EV_FREQUENT_CHECK;
5101 ev_ref (EV_A);
5102
5103 {
5104 int active = ev_active (w);
5105
5106 cleanups [active - 1] = cleanups [--cleanupcnt];
5107 ev_active (cleanups [active - 1]) = active;
5108 }
5109
5110 ev_stop (EV_A_ (W)w);
5111
5112 EV_FREQUENT_CHECK;
5113}
5114#endif
5115
3521#if EV_ASYNC_ENABLE 5116#if EV_ASYNC_ENABLE
3522void 5117void
3523ev_async_start (EV_P_ ev_async *w) 5118ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
3524{ 5119{
3525 if (expect_false (ev_is_active (w))) 5120 if (ecb_expect_false (ev_is_active (w)))
3526 return; 5121 return;
3527 5122
5123 w->sent = 0;
5124
3528 evpipe_init (EV_A); 5125 evpipe_init (EV_A);
3529 5126
3530 EV_FREQUENT_CHECK; 5127 EV_FREQUENT_CHECK;
3531 5128
3532 ev_start (EV_A_ (W)w, ++asynccnt); 5129 ev_start (EV_A_ (W)w, ++asynccnt);
3533 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 5130 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
3534 asyncs [asynccnt - 1] = w; 5131 asyncs [asynccnt - 1] = w;
3535 5132
3536 EV_FREQUENT_CHECK; 5133 EV_FREQUENT_CHECK;
3537} 5134}
3538 5135
3539void 5136void
3540ev_async_stop (EV_P_ ev_async *w) 5137ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
3541{ 5138{
3542 clear_pending (EV_A_ (W)w); 5139 clear_pending (EV_A_ (W)w);
3543 if (expect_false (!ev_is_active (w))) 5140 if (ecb_expect_false (!ev_is_active (w)))
3544 return; 5141 return;
3545 5142
3546 EV_FREQUENT_CHECK; 5143 EV_FREQUENT_CHECK;
3547 5144
3548 { 5145 {
… …
3556 5153
3557 EV_FREQUENT_CHECK; 5154 EV_FREQUENT_CHECK;
3558} 5155}
3559 5156
3560void 5157void
3561ev_async_send (EV_P_ ev_async *w) 5158ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
3562{ 5159{
3563 w->sent = 1; 5160 w->sent = 1;
3564 evpipe_write (EV_A_ &async_pending); 5161 evpipe_write (EV_A_ &async_pending);
3565} 5162}
3566#endif 5163#endif
… …
3603 5200
3604 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5201 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3605} 5202}
3606 5203
3607void 5204void
3608ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 5205ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
3609{ 5206{
3610 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5207 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3611
3612 if (expect_false (!once))
3613 {
3614 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
3615 return;
3616 }
3617 5208
3618 once->cb = cb; 5209 once->cb = cb;
3619 once->arg = arg; 5210 once->arg = arg;
3620 5211
3621 ev_init (&once->io, once_cb_io); 5212 ev_init (&once->io, once_cb_io);
… …
3634} 5225}
3635 5226
3636/*****************************************************************************/ 5227/*****************************************************************************/
3637 5228
3638#if EV_WALK_ENABLE 5229#if EV_WALK_ENABLE
5230ecb_cold
3639void 5231void
3640ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 5232ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
3641{ 5233{
3642 int i, j; 5234 int i, j;
3643 ev_watcher_list *wl, *wn; 5235 ev_watcher_list *wl, *wn;
3644 5236
3645 if (types & (EV_IO | EV_EMBED)) 5237 if (types & (EV_IO | EV_EMBED))
… …
3688 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 5280 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3689#endif 5281#endif
3690 5282
3691#if EV_IDLE_ENABLE 5283#if EV_IDLE_ENABLE
3692 if (types & EV_IDLE) 5284 if (types & EV_IDLE)
3693 for (j = NUMPRI; i--; ) 5285 for (j = NUMPRI; j--; )
3694 for (i = idlecnt [j]; i--; ) 5286 for (i = idlecnt [j]; i--; )
3695 cb (EV_A_ EV_IDLE, idles [j][i]); 5287 cb (EV_A_ EV_IDLE, idles [j][i]);
3696#endif 5288#endif
3697 5289
3698#if EV_FORK_ENABLE 5290#if EV_FORK_ENABLE
… …
3706 if (types & EV_ASYNC) 5298 if (types & EV_ASYNC)
3707 for (i = asynccnt; i--; ) 5299 for (i = asynccnt; i--; )
3708 cb (EV_A_ EV_ASYNC, asyncs [i]); 5300 cb (EV_A_ EV_ASYNC, asyncs [i]);
3709#endif 5301#endif
3710 5302
5303#if EV_PREPARE_ENABLE
3711 if (types & EV_PREPARE) 5304 if (types & EV_PREPARE)
3712 for (i = preparecnt; i--; ) 5305 for (i = preparecnt; i--; )
3713#if EV_EMBED_ENABLE 5306# if EV_EMBED_ENABLE
3714 if (ev_cb (prepares [i]) != embed_prepare_cb) 5307 if (ev_cb (prepares [i]) != embed_prepare_cb)
3715#endif 5308# endif
3716 cb (EV_A_ EV_PREPARE, prepares [i]); 5309 cb (EV_A_ EV_PREPARE, prepares [i]);
5310#endif
3717 5311
5312#if EV_CHECK_ENABLE
3718 if (types & EV_CHECK) 5313 if (types & EV_CHECK)
3719 for (i = checkcnt; i--; ) 5314 for (i = checkcnt; i--; )
3720 cb (EV_A_ EV_CHECK, checks [i]); 5315 cb (EV_A_ EV_CHECK, checks [i]);
5316#endif
3721 5317
5318#if EV_SIGNAL_ENABLE
3722 if (types & EV_SIGNAL) 5319 if (types & EV_SIGNAL)
3723 for (i = 0; i < EV_NSIG - 1; ++i) 5320 for (i = 0; i < EV_NSIG - 1; ++i)
3724 for (wl = signals [i].head; wl; ) 5321 for (wl = signals [i].head; wl; )
3725 { 5322 {
3726 wn = wl->next; 5323 wn = wl->next;
3727 cb (EV_A_ EV_SIGNAL, wl); 5324 cb (EV_A_ EV_SIGNAL, wl);
3728 wl = wn; 5325 wl = wn;
3729 } 5326 }
5327#endif
3730 5328
5329#if EV_CHILD_ENABLE
3731 if (types & EV_CHILD) 5330 if (types & EV_CHILD)
3732 for (i = EV_PID_HASHSIZE; i--; ) 5331 for (i = (EV_PID_HASHSIZE); i--; )
3733 for (wl = childs [i]; wl; ) 5332 for (wl = childs [i]; wl; )
3734 { 5333 {
3735 wn = wl->next; 5334 wn = wl->next;
3736 cb (EV_A_ EV_CHILD, wl); 5335 cb (EV_A_ EV_CHILD, wl);
3737 wl = wn; 5336 wl = wn;
3738 } 5337 }
5338#endif
3739/* EV_STAT 0x00001000 /* stat data changed */ 5339/* EV_STAT 0x00001000 /* stat data changed */
3740/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 5340/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3741} 5341}
3742#endif 5342#endif
3743 5343
3744#if EV_MULTIPLICITY 5344#if EV_MULTIPLICITY
3745 #include "ev_wrap.h" 5345 #include "ev_wrap.h"
3746#endif 5346#endif
3747 5347
3748#ifdef __cplusplus
3749}
3750#endif
3751

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