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Comparing libev/ev.c (file contents):
Revision 1.330 by root, Tue Mar 9 08:46:17 2010 UTC vs.
Revision 1.514 by root, Fri Dec 20 05:20:50 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
239# undef EV_AVOID_STDIO
189#endif 240#endif
190 241
191/* 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 */
192 243
193/* try to deduce the maximum number of signals on this platform */ 244/* try to deduce the maximum number of signals on this platform */
194#if defined (EV_NSIG) 245#if defined EV_NSIG
195/* use what's provided */ 246/* use what's provided */
196#elif defined (NSIG) 247#elif defined NSIG
197# define EV_NSIG (NSIG) 248# define EV_NSIG (NSIG)
198#elif defined(_NSIG) 249#elif defined _NSIG
199# define EV_NSIG (_NSIG) 250# define EV_NSIG (_NSIG)
200#elif defined (SIGMAX) 251#elif defined SIGMAX
201# define EV_NSIG (SIGMAX+1) 252# define EV_NSIG (SIGMAX+1)
202#elif defined (SIG_MAX) 253#elif defined SIG_MAX
203# define EV_NSIG (SIG_MAX+1) 254# define EV_NSIG (SIG_MAX+1)
204#elif defined (_SIG_MAX) 255#elif defined _SIG_MAX
205# define EV_NSIG (_SIG_MAX+1) 256# define EV_NSIG (_SIG_MAX+1)
206#elif defined (MAXSIG) 257#elif defined MAXSIG
207# define EV_NSIG (MAXSIG+1) 258# define EV_NSIG (MAXSIG+1)
208#elif defined (MAX_SIG) 259#elif defined MAX_SIG
209# define EV_NSIG (MAX_SIG+1) 260# define EV_NSIG (MAX_SIG+1)
210#elif defined (SIGARRAYSIZE) 261#elif defined SIGARRAYSIZE
211# define EV_NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */ 262# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
212#elif defined (_sys_nsig) 263#elif defined _sys_nsig
213# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 264# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
214#else 265#else
215# error "unable to find value for NSIG, please report" 266# define EV_NSIG (8 * sizeof (sigset_t) + 1)
216/* to make it compile regardless, just remove the above line */ 267#endif
217# define EV_NSIG 65 268
269#ifndef EV_USE_FLOOR
270# define EV_USE_FLOOR 0
218#endif 271#endif
219 272
220#ifndef EV_USE_CLOCK_SYSCALL 273#ifndef EV_USE_CLOCK_SYSCALL
221# if __linux && __GLIBC__ >= 2 274# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
222# define EV_USE_CLOCK_SYSCALL 1 275# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
223# else 276# else
224# define EV_USE_CLOCK_SYSCALL 0 277# define EV_USE_CLOCK_SYSCALL 0
225# endif 278# endif
226#endif 279#endif
227 280
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
228#ifndef EV_USE_MONOTONIC 290#ifndef EV_USE_MONOTONIC
229# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 291# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
230# define EV_USE_MONOTONIC 1 292# define EV_USE_MONOTONIC EV_FEATURE_OS
231# else 293# else
232# define EV_USE_MONOTONIC 0 294# define EV_USE_MONOTONIC 0
233# endif 295# endif
234#endif 296#endif
235 297
… …
237# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 299# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
238#endif 300#endif
239 301
240#ifndef EV_USE_NANOSLEEP 302#ifndef EV_USE_NANOSLEEP
241# if _POSIX_C_SOURCE >= 199309L 303# if _POSIX_C_SOURCE >= 199309L
242# define EV_USE_NANOSLEEP 1 304# define EV_USE_NANOSLEEP EV_FEATURE_OS
243# else 305# else
244# define EV_USE_NANOSLEEP 0 306# define EV_USE_NANOSLEEP 0
245# endif 307# endif
246#endif 308#endif
247 309
248#ifndef EV_USE_SELECT 310#ifndef EV_USE_SELECT
249# define EV_USE_SELECT 1 311# define EV_USE_SELECT EV_FEATURE_BACKENDS
250#endif 312#endif
251 313
252#ifndef EV_USE_POLL 314#ifndef EV_USE_POLL
253# ifdef _WIN32 315# ifdef _WIN32
254# define EV_USE_POLL 0 316# define EV_USE_POLL 0
255# else 317# else
256# define EV_USE_POLL 1 318# define EV_USE_POLL EV_FEATURE_BACKENDS
257# endif 319# endif
258#endif 320#endif
259 321
260#ifndef EV_USE_EPOLL 322#ifndef EV_USE_EPOLL
261# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 323# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
262# define EV_USE_EPOLL 1 324# define EV_USE_EPOLL EV_FEATURE_BACKENDS
263# else 325# else
264# define EV_USE_EPOLL 0 326# define EV_USE_EPOLL 0
265# endif 327# endif
266#endif 328#endif
267 329
… …
271 333
272#ifndef EV_USE_PORT 334#ifndef EV_USE_PORT
273# define EV_USE_PORT 0 335# define EV_USE_PORT 0
274#endif 336#endif
275 337
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
276#ifndef EV_USE_INOTIFY 354#ifndef EV_USE_INOTIFY
277# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 355# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
278# define EV_USE_INOTIFY 1 356# define EV_USE_INOTIFY EV_FEATURE_OS
279# else 357# else
280# define EV_USE_INOTIFY 0 358# define EV_USE_INOTIFY 0
281# endif 359# endif
282#endif 360#endif
283 361
284#ifndef EV_PID_HASHSIZE 362#ifndef EV_PID_HASHSIZE
285# if EV_MINIMAL 363# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
286# define EV_PID_HASHSIZE 1
287# else
288# define EV_PID_HASHSIZE 16
289# endif
290#endif 364#endif
291 365
292#ifndef EV_INOTIFY_HASHSIZE 366#ifndef EV_INOTIFY_HASHSIZE
293# if EV_MINIMAL 367# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
294# define EV_INOTIFY_HASHSIZE 1
295# else
296# define EV_INOTIFY_HASHSIZE 16
297# endif
298#endif 368#endif
299 369
300#ifndef EV_USE_EVENTFD 370#ifndef EV_USE_EVENTFD
301# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 371# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
302# define EV_USE_EVENTFD 1 372# define EV_USE_EVENTFD EV_FEATURE_OS
303# else 373# else
304# define EV_USE_EVENTFD 0 374# define EV_USE_EVENTFD 0
305# endif 375# endif
306#endif 376#endif
307 377
308#ifndef EV_USE_SIGNALFD 378#ifndef EV_USE_SIGNALFD
309# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 379# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
310# define EV_USE_SIGNALFD 1 380# define EV_USE_SIGNALFD EV_FEATURE_OS
311# else 381# else
312# define EV_USE_SIGNALFD 0 382# define EV_USE_SIGNALFD 0
313# endif 383# endif
314#endif 384#endif
315 385
… …
318# define EV_USE_4HEAP 1 388# define EV_USE_4HEAP 1
319# define EV_HEAP_CACHE_AT 1 389# define EV_HEAP_CACHE_AT 1
320#endif 390#endif
321 391
322#ifndef EV_VERIFY 392#ifndef EV_VERIFY
323# define EV_VERIFY !EV_MINIMAL 393# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
324#endif 394#endif
325 395
326#ifndef EV_USE_4HEAP 396#ifndef EV_USE_4HEAP
327# define EV_USE_4HEAP !EV_MINIMAL 397# define EV_USE_4HEAP EV_FEATURE_DATA
328#endif 398#endif
329 399
330#ifndef EV_HEAP_CACHE_AT 400#ifndef EV_HEAP_CACHE_AT
331# 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
332#endif 418#endif
333 419
334/* 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, */
335/* which makes programs even slower. might work on other unices, too. */ 421/* which makes programs even slower. might work on other unices, too. */
336#if EV_USE_CLOCK_SYSCALL 422#if EV_USE_CLOCK_SYSCALL
337# include <syscall.h> 423# include <sys/syscall.h>
338# ifdef SYS_clock_gettime 424# ifdef SYS_clock_gettime
339# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 425# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
340# undef EV_USE_MONOTONIC 426# undef EV_USE_MONOTONIC
341# define EV_USE_MONOTONIC 1 427# define EV_USE_MONOTONIC 1
428# define EV_NEED_SYSCALL 1
342# else 429# else
343# undef EV_USE_CLOCK_SYSCALL 430# undef EV_USE_CLOCK_SYSCALL
344# define EV_USE_CLOCK_SYSCALL 0 431# define EV_USE_CLOCK_SYSCALL 0
345# endif 432# endif
346#endif 433#endif
347 434
348/* 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 */
349 436
350#ifdef _AIX
351/* AIX has a completely broken poll.h header */
352# undef EV_USE_POLL
353# define EV_USE_POLL 0
354#endif
355
356#ifndef CLOCK_MONOTONIC 437#ifndef CLOCK_MONOTONIC
357# undef EV_USE_MONOTONIC 438# undef EV_USE_MONOTONIC
358# define EV_USE_MONOTONIC 0 439# define EV_USE_MONOTONIC 0
359#endif 440#endif
360 441
… …
366#if !EV_STAT_ENABLE 447#if !EV_STAT_ENABLE
367# undef EV_USE_INOTIFY 448# undef EV_USE_INOTIFY
368# define EV_USE_INOTIFY 0 449# define EV_USE_INOTIFY 0
369#endif 450#endif
370 451
452#if __linux && EV_USE_IOURING
453# include <linux/version.h>
454# if LINUX_VERSION_CODE < KERNEL_VERSION(4,14,0)
455# undef EV_USE_IOURING
456# define EV_USE_IOURING 0
457# endif
458#endif
459
371#if !EV_USE_NANOSLEEP 460#if !EV_USE_NANOSLEEP
372# ifndef _WIN32 461/* hp-ux has it in sys/time.h, which we unconditionally include above */
462# if !defined _WIN32 && !defined __hpux
373# include <sys/select.h> 463# include <sys/select.h>
374# endif 464# endif
375#endif 465#endif
376 466
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
377#if EV_USE_INOTIFY 492#if EV_USE_INOTIFY
378# include <sys/utsname.h>
379# include <sys/statfs.h> 493# include <sys/statfs.h>
380# include <sys/inotify.h> 494# include <sys/inotify.h>
381/* 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 */
382# ifndef IN_DONT_FOLLOW 496# ifndef IN_DONT_FOLLOW
383# undef EV_USE_INOTIFY 497# undef EV_USE_INOTIFY
384# define EV_USE_INOTIFY 0 498# define EV_USE_INOTIFY 0
385# endif 499# endif
386#endif
387
388#if EV_SELECT_IS_WINSOCKET
389# include <winsock.h>
390#endif 500#endif
391 501
392#if EV_USE_EVENTFD 502#if EV_USE_EVENTFD
393/* 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 */
394# include <stdint.h> 504# include <stdint.h>
… …
400# define EFD_CLOEXEC O_CLOEXEC 510# define EFD_CLOEXEC O_CLOEXEC
401# else 511# else
402# define EFD_CLOEXEC 02000000 512# define EFD_CLOEXEC 02000000
403# endif 513# endif
404# endif 514# endif
405# ifdef __cplusplus
406extern "C" {
407# endif
408int (eventfd) (unsigned int initval, int flags); 515EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
409# ifdef __cplusplus
410}
411# endif
412#endif 516#endif
413 517
414#if EV_USE_SIGNALFD 518#if EV_USE_SIGNALFD
415/* 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 */
416# include <stdint.h> 520# include <stdint.h>
… …
422# define SFD_CLOEXEC O_CLOEXEC 526# define SFD_CLOEXEC O_CLOEXEC
423# else 527# else
424# define SFD_CLOEXEC 02000000 528# define SFD_CLOEXEC 02000000
425# endif 529# endif
426# endif 530# endif
427# ifdef __cplusplus
428extern "C" {
429# endif
430int signalfd (int fd, const sigset_t *mask, int flags); 531EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
431 532
432struct signalfd_siginfo 533struct signalfd_siginfo
433{ 534{
434 uint32_t ssi_signo; 535 uint32_t ssi_signo;
435 char pad[128 - sizeof (uint32_t)]; 536 char pad[128 - sizeof (uint32_t)];
436}; 537};
437# ifdef __cplusplus
438}
439# endif 538#endif
440#endif
441 539
442 540/*****************************************************************************/
443/**/
444 541
445#if EV_VERIFY >= 3 542#if EV_VERIFY >= 3
446# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 543# define EV_FREQUENT_CHECK ev_verify (EV_A)
447#else 544#else
448# define EV_FREQUENT_CHECK do { } while (0) 545# define EV_FREQUENT_CHECK do { } while (0)
449#endif 546#endif
450 547
451/* 548/*
452 * This is used to avoid floating point rounding problems. 549 * This is used to work around floating point rounding problems.
453 * It is added to ev_rt_now when scheduling periodics
454 * to ensure progress, time-wise, even when rounding
455 * errors are against us.
456 * This value is good at least till the year 4000. 550 * This value is good at least till the year 4000.
457 * Better solutions welcome.
458 */ 551 */
459#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 */
460 554
461#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) */
462#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) */
463 557
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;
464#if __GNUC__ >= 4 631 #if __GNUC__
465# define expect(expr,value) __builtin_expect ((expr),(value)) 632 typedef signed long long int64_t;
466# 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
467#else 647#else
468# define expect(expr,value) (expr) 648 #include <inttypes.h>
469# define noinline 649 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
470# if __STDC_VERSION__ < 199901L && __GNUC__ < 2 650 #define ECB_PTRSIZE 8
471# define inline 651 #else
652 #define ECB_PTRSIZE 4
653 #endif
472# 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
473#endif 665 #endif
666#endif
474 667
475#define expect_false(expr) expect ((expr) != 0, 0) 668/* many compilers define _GNUC_ to some versions but then only implement
476#define expect_true(expr) expect ((expr) != 0, 1) 669 * what their idiot authors think are the "more important" extensions,
477#define inline_size static inline 670 * causing enormous grief in return for some better fake benchmark numbers.
478 671 * or so.
479#if EV_MINIMAL 672 * we try to detect these and simply assume they are not gcc - if they have
480# 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
481#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
482# define inline_speed static inline 1616# define inline_speed ecb_inline
1617#else
1618# define inline_speed ecb_noinline static
483#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/*****************************************************************************/
484 1686
485#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1687#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
486 1688
487#if EV_MINPRI == EV_MAXPRI 1689#if EV_MINPRI == EV_MAXPRI
488# define ABSPRI(w) (((W)w), 0) 1690# define ABSPRI(w) (((W)w), 0)
489#else 1691#else
490# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1692# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
491#endif 1693#endif
492 1694
493#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1695#define EMPTY /* required for microsofts broken pseudo-c compiler */
494#define EMPTY2(a,b) /* used to suppress some warnings */
495 1696
496typedef ev_watcher *W; 1697typedef ev_watcher *W;
497typedef ev_watcher_list *WL; 1698typedef ev_watcher_list *WL;
498typedef ev_watcher_time *WT; 1699typedef ev_watcher_time *WT;
499 1700
500#define ev_active(w) ((W)(w))->active 1701#define ev_active(w) ((W)(w))->active
501#define ev_at(w) ((WT)(w))->at 1702#define ev_at(w) ((WT)(w))->at
502 1703
503#if EV_USE_REALTIME 1704#if EV_USE_REALTIME
504/* 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 */
505/* giving it a reasonably high chance of working on typical architetcures */ 1706/* giving it a reasonably high chance of working on typical architectures */
506static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 1707static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
507#endif 1708#endif
508 1709
509#if EV_USE_MONOTONIC 1710#if EV_USE_MONOTONIC
510static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 1711static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
… …
524# include "ev_win32.c" 1725# include "ev_win32.c"
525#endif 1726#endif
526 1727
527/*****************************************************************************/ 1728/*****************************************************************************/
528 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
1826#if EV_AVOID_STDIO
1827ecb_noinline ecb_cold
1828static void
1829ev_printerr (const char *msg)
1830{
1831 write (STDERR_FILENO, msg, strlen (msg));
1832}
1833#endif
1834
529static void (*syserr_cb)(const char *msg); 1835static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
530 1836
1837ecb_cold
531void 1838void
532ev_set_syserr_cb (void (*cb)(const char *msg)) 1839ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
533{ 1840{
534 syserr_cb = cb; 1841 syserr_cb = cb;
535} 1842}
536 1843
537static void noinline 1844ecb_noinline ecb_cold
1845static void
538ev_syserr (const char *msg) 1846ev_syserr (const char *msg)
539{ 1847{
540 if (!msg) 1848 if (!msg)
541 msg = "(libev) system error"; 1849 msg = "(libev) system error";
542 1850
543 if (syserr_cb) 1851 if (syserr_cb)
544 syserr_cb (msg); 1852 syserr_cb (msg);
545 else 1853 else
546 { 1854 {
547#if EV_AVOID_STDIO 1855#if EV_AVOID_STDIO
548 write (STDERR_FILENO, msg, strlen (msg)); 1856 ev_printerr (msg);
549 write (STDERR_FILENO, ": ", 2); 1857 ev_printerr (": ");
550 msg = strerror (errno); 1858 ev_printerr (strerror (errno));
551 write (STDERR_FILENO, msg, strlen (msg)); 1859 ev_printerr ("\n");
552 write (STDERR_FILENO, "\n", 1);
553#else 1860#else
554 perror (msg); 1861 perror (msg);
555#endif 1862#endif
556 abort (); 1863 abort ();
557 } 1864 }
558} 1865}
559 1866
560static void * 1867static void *
561ev_realloc_emul (void *ptr, long size) 1868ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
562{ 1869{
563 /* some systems, notably openbsd and darwin, fail to properly 1870 /* some systems, notably openbsd and darwin, fail to properly
564 * 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
565 * 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.
566 */ 1875 */
567 1876
568 if (size) 1877 if (size)
569 return realloc (ptr, size); 1878 return realloc (ptr, size);
570 1879
571 free (ptr); 1880 free (ptr);
572 return 0; 1881 return 0;
573} 1882}
574 1883
575static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1884static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
576 1885
1886ecb_cold
577void 1887void
578ev_set_allocator (void *(*cb)(void *ptr, long size)) 1888ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
579{ 1889{
580 alloc = cb; 1890 alloc = cb;
581} 1891}
582 1892
583inline_speed void * 1893inline_speed void *
… …
586 ptr = alloc (ptr, size); 1896 ptr = alloc (ptr, size);
587 1897
588 if (!ptr && size) 1898 if (!ptr && size)
589 { 1899 {
590#if EV_AVOID_STDIO 1900#if EV_AVOID_STDIO
591 write (STDERR_FILENO, "libev: memory allocation failed, aborting.", 1901 ev_printerr ("(libev) memory allocation failed, aborting.\n");
592 sizeof ("libev: memory allocation failed, aborting.") - 1);
593#else 1902#else
594 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1903 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
595#endif 1904#endif
596 abort (); 1905 abort ();
597 } 1906 }
598 1907
599 return ptr; 1908 return ptr;
… …
611typedef struct 1920typedef struct
612{ 1921{
613 WL head; 1922 WL head;
614 unsigned char events; /* the events watched for */ 1923 unsigned char events; /* the events watched for */
615 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) */
616 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 */
617 unsigned char unused; 1926 unsigned char eflags; /* flags field for use by backends */
618#if EV_USE_EPOLL 1927#if EV_USE_EPOLL
619 unsigned int egen; /* generation counter to counter epoll bugs */ 1928 unsigned int egen; /* generation counter to counter epoll bugs */
620#endif 1929#endif
621#if EV_SELECT_IS_WINSOCKET 1930#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
622 SOCKET handle; 1931 SOCKET handle;
1932#endif
1933#if EV_USE_IOCP
1934 OVERLAPPED or, ow;
623#endif 1935#endif
624} ANFD; 1936} ANFD;
625 1937
626/* stores the pending event set for a given watcher */ 1938/* stores the pending event set for a given watcher */
627typedef struct 1939typedef struct
… …
669 #undef VAR 1981 #undef VAR
670 }; 1982 };
671 #include "ev_wrap.h" 1983 #include "ev_wrap.h"
672 1984
673 static struct ev_loop default_loop_struct; 1985 static struct ev_loop default_loop_struct;
674 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 */
675 1987
676#else 1988#else
677 1989
678 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 */
679 #define VAR(name,decl) static decl; 1991 #define VAR(name,decl) static decl;
680 #include "ev_vars.h" 1992 #include "ev_vars.h"
681 #undef VAR 1993 #undef VAR
682 1994
683 static int ev_default_loop_ptr; 1995 static int ev_default_loop_ptr;
684 1996
685#endif 1997#endif
686 1998
687#if EV_MINIMAL < 2 1999#if EV_FEATURE_API
688# 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)
689# 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)
690# define EV_INVOKE_PENDING invoke_cb (EV_A) 2002# define EV_INVOKE_PENDING invoke_cb (EV_A)
691#else 2003#else
692# define EV_RELEASE_CB (void)0 2004# define EV_RELEASE_CB (void)0
693# define EV_ACQUIRE_CB (void)0 2005# define EV_ACQUIRE_CB (void)0
694# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 2006# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
695#endif 2007#endif
696 2008
697#define EVUNLOOP_RECURSE 0x80 2009#define EVBREAK_RECURSE 0x80
698 2010
699/*****************************************************************************/ 2011/*****************************************************************************/
700 2012
701#ifndef EV_HAVE_EV_TIME 2013#ifndef EV_HAVE_EV_TIME
702ev_tstamp 2014ev_tstamp
703ev_time (void) 2015ev_time (void) EV_NOEXCEPT
704{ 2016{
705#if EV_USE_REALTIME 2017#if EV_USE_REALTIME
706 if (expect_true (have_realtime)) 2018 if (ecb_expect_true (have_realtime))
707 { 2019 {
708 struct timespec ts; 2020 struct timespec ts;
709 clock_gettime (CLOCK_REALTIME, &ts); 2021 clock_gettime (CLOCK_REALTIME, &ts);
710 return ts.tv_sec + ts.tv_nsec * 1e-9; 2022 return EV_TS_GET (ts);
711 } 2023 }
712#endif 2024#endif
713 2025
2026 {
714 struct timeval tv; 2027 struct timeval tv;
715 gettimeofday (&tv, 0); 2028 gettimeofday (&tv, 0);
716 return tv.tv_sec + tv.tv_usec * 1e-6; 2029 return EV_TV_GET (tv);
2030 }
717} 2031}
718#endif 2032#endif
719 2033
720inline_size ev_tstamp 2034inline_size ev_tstamp
721get_clock (void) 2035get_clock (void)
722{ 2036{
723#if EV_USE_MONOTONIC 2037#if EV_USE_MONOTONIC
724 if (expect_true (have_monotonic)) 2038 if (ecb_expect_true (have_monotonic))
725 { 2039 {
726 struct timespec ts; 2040 struct timespec ts;
727 clock_gettime (CLOCK_MONOTONIC, &ts); 2041 clock_gettime (CLOCK_MONOTONIC, &ts);
728 return ts.tv_sec + ts.tv_nsec * 1e-9; 2042 return EV_TS_GET (ts);
729 } 2043 }
730#endif 2044#endif
731 2045
732 return ev_time (); 2046 return ev_time ();
733} 2047}
734 2048
735#if EV_MULTIPLICITY 2049#if EV_MULTIPLICITY
736ev_tstamp 2050ev_tstamp
737ev_now (EV_P) 2051ev_now (EV_P) EV_NOEXCEPT
738{ 2052{
739 return ev_rt_now; 2053 return ev_rt_now;
740} 2054}
741#endif 2055#endif
742 2056
743void 2057void
744ev_sleep (ev_tstamp delay) 2058ev_sleep (ev_tstamp delay) EV_NOEXCEPT
745{ 2059{
746 if (delay > 0.) 2060 if (delay > EV_TS_CONST (0.))
747 { 2061 {
748#if EV_USE_NANOSLEEP 2062#if EV_USE_NANOSLEEP
749 struct timespec ts; 2063 struct timespec ts;
750 2064
751 ts.tv_sec = (time_t)delay; 2065 EV_TS_SET (ts, delay);
752 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
753
754 nanosleep (&ts, 0); 2066 nanosleep (&ts, 0);
755#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) */
756 Sleep ((unsigned long)(delay * 1e3)); 2070 Sleep ((unsigned long)(EV_TS_TO_MSEC (delay)));
757#else 2071#else
758 struct timeval tv; 2072 struct timeval tv;
759
760 tv.tv_sec = (time_t)delay;
761 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
762 2073
763 /* 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 */
764 /* something not guaranteed by newer posix versions, but guaranteed */ 2075 /* something not guaranteed by newer posix versions, but guaranteed */
765 /* by older ones */ 2076 /* by older ones */
2077 EV_TV_SET (tv, delay);
766 select (0, 0, 0, 0, &tv); 2078 select (0, 0, 0, 0, &tv);
767#endif 2079#endif
768 } 2080 }
769} 2081}
770 2082
771/*****************************************************************************/ 2083/*****************************************************************************/
772 2084
773#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 */
774 2086
775/* find a suitable new size for the given array, */ 2087/* find a suitable new size for the given array, */
776/* hopefully by rounding to a ncie-to-malloc size */ 2088/* hopefully by rounding to a nice-to-malloc size */
777inline_size int 2089inline_size int
778array_nextsize (int elem, int cur, int cnt) 2090array_nextsize (int elem, int cur, int cnt)
779{ 2091{
780 int ncur = cur + 1; 2092 int ncur = cur + 1;
781 2093
782 do 2094 do
783 ncur <<= 1; 2095 ncur <<= 1;
784 while (cnt > ncur); 2096 while (cnt > ncur);
785 2097
786 /* 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 */
787 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 2099 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
788 { 2100 {
789 ncur *= elem; 2101 ncur *= elem;
790 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);
791 ncur = ncur - sizeof (void *) * 4; 2103 ncur = ncur - sizeof (void *) * 4;
… …
793 } 2105 }
794 2106
795 return ncur; 2107 return ncur;
796} 2108}
797 2109
798static noinline void * 2110ecb_noinline ecb_cold
2111static void *
799array_realloc (int elem, void *base, int *cur, int cnt) 2112array_realloc (int elem, void *base, int *cur, int cnt)
800{ 2113{
801 *cur = array_nextsize (elem, *cur, cnt); 2114 *cur = array_nextsize (elem, *cur, cnt);
802 return ev_realloc (base, elem * *cur); 2115 return ev_realloc (base, elem * *cur);
803} 2116}
804 2117
2118#define array_needsize_noinit(base,offset,count)
2119
805#define array_init_zero(base,count) \ 2120#define array_needsize_zerofill(base,offset,count) \
806 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 2121 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
807 2122
808#define array_needsize(type,base,cur,cnt,init) \ 2123#define array_needsize(type,base,cur,cnt,init) \
809 if (expect_false ((cnt) > (cur))) \ 2124 if (ecb_expect_false ((cnt) > (cur))) \
810 { \ 2125 { \
811 int ocur_ = (cur); \ 2126 ecb_unused int ocur_ = (cur); \
812 (base) = (type *)array_realloc \ 2127 (base) = (type *)array_realloc \
813 (sizeof (type), (base), &(cur), (cnt)); \ 2128 (sizeof (type), (base), &(cur), (cnt)); \
814 init ((base) + (ocur_), (cur) - ocur_); \ 2129 init ((base), ocur_, ((cur) - ocur_)); \
815 } 2130 }
816 2131
817#if 0 2132#if 0
818#define array_slim(type,stem) \ 2133#define array_slim(type,stem) \
819 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2134 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
… …
828 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 2143 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
829 2144
830/*****************************************************************************/ 2145/*****************************************************************************/
831 2146
832/* dummy callback for pending events */ 2147/* dummy callback for pending events */
833static void noinline 2148ecb_noinline
2149static void
834pendingcb (EV_P_ ev_prepare *w, int revents) 2150pendingcb (EV_P_ ev_prepare *w, int revents)
835{ 2151{
836} 2152}
837 2153
838void noinline 2154ecb_noinline
2155void
839ev_feed_event (EV_P_ void *w, int revents) 2156ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
840{ 2157{
841 W w_ = (W)w; 2158 W w_ = (W)w;
842 int pri = ABSPRI (w_); 2159 int pri = ABSPRI (w_);
843 2160
844 if (expect_false (w_->pending)) 2161 if (ecb_expect_false (w_->pending))
845 pendings [pri][w_->pending - 1].events |= revents; 2162 pendings [pri][w_->pending - 1].events |= revents;
846 else 2163 else
847 { 2164 {
848 w_->pending = ++pendingcnt [pri]; 2165 w_->pending = ++pendingcnt [pri];
849 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2166 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
850 pendings [pri][w_->pending - 1].w = w_; 2167 pendings [pri][w_->pending - 1].w = w_;
851 pendings [pri][w_->pending - 1].events = revents; 2168 pendings [pri][w_->pending - 1].events = revents;
852 } 2169 }
2170
2171 pendingpri = NUMPRI - 1;
853} 2172}
854 2173
855inline_speed void 2174inline_speed void
856feed_reverse (EV_P_ W w) 2175feed_reverse (EV_P_ W w)
857{ 2176{
858 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2177 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
859 rfeeds [rfeedcnt++] = w; 2178 rfeeds [rfeedcnt++] = w;
860} 2179}
861 2180
862inline_size void 2181inline_size void
863feed_reverse_done (EV_P_ int revents) 2182feed_reverse_done (EV_P_ int revents)
… …
877} 2196}
878 2197
879/*****************************************************************************/ 2198/*****************************************************************************/
880 2199
881inline_speed void 2200inline_speed void
882fd_event_nc (EV_P_ int fd, int revents) 2201fd_event_nocheck (EV_P_ int fd, int revents)
883{ 2202{
884 ANFD *anfd = anfds + fd; 2203 ANFD *anfd = anfds + fd;
885 ev_io *w; 2204 ev_io *w;
886 2205
887 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)
… …
898inline_speed void 2217inline_speed void
899fd_event (EV_P_ int fd, int revents) 2218fd_event (EV_P_ int fd, int revents)
900{ 2219{
901 ANFD *anfd = anfds + fd; 2220 ANFD *anfd = anfds + fd;
902 2221
903 if (expect_true (!anfd->reify)) 2222 if (ecb_expect_true (!anfd->reify))
904 fd_event_nc (EV_A_ fd, revents); 2223 fd_event_nocheck (EV_A_ fd, revents);
905} 2224}
906 2225
907void 2226void
908ev_feed_fd_event (EV_P_ int fd, int revents) 2227ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
909{ 2228{
910 if (fd >= 0 && fd < anfdmax) 2229 if (fd >= 0 && fd < anfdmax)
911 fd_event_nc (EV_A_ fd, revents); 2230 fd_event_nocheck (EV_A_ fd, revents);
912} 2231}
913 2232
914/* make sure the external fd watch events are in-sync */ 2233/* make sure the external fd watch events are in-sync */
915/* with the kernel/libev internal state */ 2234/* with the kernel/libev internal state */
916inline_size void 2235inline_size void
917fd_reify (EV_P) 2236fd_reify (EV_P)
918{ 2237{
919 int i; 2238 int i;
920 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
921 for (i = 0; i < fdchangecnt; ++i) 2265 for (i = 0; i < fdchangecnt; ++i)
922 { 2266 {
923 int fd = fdchanges [i]; 2267 int fd = fdchanges [i];
924 ANFD *anfd = anfds + fd; 2268 ANFD *anfd = anfds + fd;
925 ev_io *w; 2269 ev_io *w;
926 2270
927 unsigned char events = 0; 2271 unsigned char o_events = anfd->events;
2272 unsigned char o_reify = anfd->reify;
928 2273
929 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2274 anfd->reify = 0;
930 events |= (unsigned char)w->events;
931 2275
932#if EV_SELECT_IS_WINSOCKET 2276 /*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
933 if (events)
934 { 2277 {
935 unsigned long arg; 2278 anfd->events = 0;
936 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 2279
937 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 |= */
938 } 2285 }
939#endif
940 2286
941 { 2287 if (o_reify & EV__IOFDSET)
942 unsigned char o_events = anfd->events;
943 unsigned char o_reify = anfd->reify;
944
945 anfd->reify = 0;
946 anfd->events = events;
947
948 if (o_events != events || o_reify & EV__IOFDSET)
949 backend_modify (EV_A_ fd, o_events, events); 2288 backend_modify (EV_A_ fd, o_events, anfd->events);
950 }
951 } 2289 }
952 2290
953 fdchangecnt = 0; 2291 fdchangecnt = 0;
954} 2292}
955 2293
956/* something about the given fd changed */ 2294/* something about the given fd changed */
957inline_size void 2295inline_size
2296void
958fd_change (EV_P_ int fd, int flags) 2297fd_change (EV_P_ int fd, int flags)
959{ 2298{
960 unsigned char reify = anfds [fd].reify; 2299 unsigned char reify = anfds [fd].reify;
961 anfds [fd].reify |= flags; 2300 anfds [fd].reify |= flags;
962 2301
963 if (expect_true (!reify)) 2302 if (ecb_expect_true (!reify))
964 { 2303 {
965 ++fdchangecnt; 2304 ++fdchangecnt;
966 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2305 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
967 fdchanges [fdchangecnt - 1] = fd; 2306 fdchanges [fdchangecnt - 1] = fd;
968 } 2307 }
969} 2308}
970 2309
971/* 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 */
972inline_speed void 2311inline_speed ecb_cold void
973fd_kill (EV_P_ int fd) 2312fd_kill (EV_P_ int fd)
974{ 2313{
975 ev_io *w; 2314 ev_io *w;
976 2315
977 while ((w = (ev_io *)anfds [fd].head)) 2316 while ((w = (ev_io *)anfds [fd].head))
… …
979 ev_io_stop (EV_A_ w); 2318 ev_io_stop (EV_A_ w);
980 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);
981 } 2320 }
982} 2321}
983 2322
984/* check whether the given fd is atcually valid, for error recovery */ 2323/* check whether the given fd is actually valid, for error recovery */
985inline_size int 2324inline_size ecb_cold int
986fd_valid (int fd) 2325fd_valid (int fd)
987{ 2326{
988#ifdef _WIN32 2327#ifdef _WIN32
989 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2328 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
990#else 2329#else
991 return fcntl (fd, F_GETFD) != -1; 2330 return fcntl (fd, F_GETFD) != -1;
992#endif 2331#endif
993} 2332}
994 2333
995/* called on EBADF to verify fds */ 2334/* called on EBADF to verify fds */
996static void noinline 2335ecb_noinline ecb_cold
2336static void
997fd_ebadf (EV_P) 2337fd_ebadf (EV_P)
998{ 2338{
999 int fd; 2339 int fd;
1000 2340
1001 for (fd = 0; fd < anfdmax; ++fd) 2341 for (fd = 0; fd < anfdmax; ++fd)
… …
1003 if (!fd_valid (fd) && errno == EBADF) 2343 if (!fd_valid (fd) && errno == EBADF)
1004 fd_kill (EV_A_ fd); 2344 fd_kill (EV_A_ fd);
1005} 2345}
1006 2346
1007/* 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 */
1008static void noinline 2348ecb_noinline ecb_cold
2349static void
1009fd_enomem (EV_P) 2350fd_enomem (EV_P)
1010{ 2351{
1011 int fd; 2352 int fd;
1012 2353
1013 for (fd = anfdmax; fd--; ) 2354 for (fd = anfdmax; fd--; )
… …
1017 break; 2358 break;
1018 } 2359 }
1019} 2360}
1020 2361
1021/* 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 */
1022static void noinline 2363ecb_noinline
2364static void
1023fd_rearm_all (EV_P) 2365fd_rearm_all (EV_P)
1024{ 2366{
1025 int fd; 2367 int fd;
1026 2368
1027 for (fd = 0; fd < anfdmax; ++fd) 2369 for (fd = 0; fd < anfdmax; ++fd)
… …
1031 anfds [fd].emask = 0; 2373 anfds [fd].emask = 0;
1032 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); 2374 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
1033 } 2375 }
1034} 2376}
1035 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
1036/*****************************************************************************/ 2392/*****************************************************************************/
1037 2393
1038/* 2394/*
1039 * 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
1040 * 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
1041 * the branching factor of the d-tree. 2397 * the branching factor of the d-tree.
1042 */ 2398 */
1043 2399
1044/* 2400/*
… …
1066 ev_tstamp minat; 2422 ev_tstamp minat;
1067 ANHE *minpos; 2423 ANHE *minpos;
1068 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; 2424 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
1069 2425
1070 /* find minimum child */ 2426 /* find minimum child */
1071 if (expect_true (pos + DHEAP - 1 < E)) 2427 if (ecb_expect_true (pos + DHEAP - 1 < E))
1072 { 2428 {
1073 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2429 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1074 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));
1075 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));
1076 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));
1077 } 2433 }
1078 else if (pos < E) 2434 else if (pos < E)
1079 { 2435 {
1080 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2436 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1081 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2437 if (pos + 1 < E && minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1082 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2438 if (pos + 2 < E && minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1083 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2439 if (pos + 3 < E && minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1084 } 2440 }
1085 else 2441 else
1086 break; 2442 break;
1087 2443
1088 if (ANHE_at (he) <= minat) 2444 if (ANHE_at (he) <= minat)
… …
1096 2452
1097 heap [k] = he; 2453 heap [k] = he;
1098 ev_active (ANHE_w (he)) = k; 2454 ev_active (ANHE_w (he)) = k;
1099} 2455}
1100 2456
1101#else /* 4HEAP */ 2457#else /* not 4HEAP */
1102 2458
1103#define HEAP0 1 2459#define HEAP0 1
1104#define HPARENT(k) ((k) >> 1) 2460#define HPARENT(k) ((k) >> 1)
1105#define UPHEAP_DONE(p,k) (!(p)) 2461#define UPHEAP_DONE(p,k) (!(p))
1106 2462
… …
1192 2548
1193static ANSIG signals [EV_NSIG - 1]; 2549static ANSIG signals [EV_NSIG - 1];
1194 2550
1195/*****************************************************************************/ 2551/*****************************************************************************/
1196 2552
1197/* used to prepare libev internal fd's */ 2553#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1198/* 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
1199inline_speed void 2601inline_speed void
1200fd_intern (int fd) 2602evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1201{ 2603{
1202#ifdef _WIN32 2604 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1203 unsigned long arg = 1;
1204 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1205#else
1206 fcntl (fd, F_SETFD, FD_CLOEXEC);
1207 fcntl (fd, F_SETFL, O_NONBLOCK);
1208#endif
1209}
1210 2605
1211static void noinline 2606 if (ecb_expect_true (*flag))
1212evpipe_init (EV_P) 2607 return;
1213{ 2608
1214 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)
1215 { 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
1216#if EV_USE_EVENTFD 2625#if EV_USE_EVENTFD
1217 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2626 if (evpipe [0] < 0)
1218 if (evfd < 0 && errno == EINVAL)
1219 evfd = eventfd (0, 0);
1220
1221 if (evfd >= 0)
1222 { 2627 {
1223 evpipe [0] = -1; 2628 uint64_t counter = 1;
1224 fd_intern (evfd); /* doing it twice doesn't hurt */ 2629 write (evpipe [1], &counter, sizeof (uint64_t));
1225 ev_io_set (&pipe_w, evfd, EV_READ);
1226 } 2630 }
1227 else 2631 else
1228#endif 2632#endif
1229 { 2633 {
1230 while (pipe (evpipe)) 2634#ifdef _WIN32
1231 ev_syserr ("(libev) error creating signal/async pipe"); 2635 WSABUF buf;
1232 2636 DWORD sent;
1233 fd_intern (evpipe [0]); 2637 buf.buf = (char *)&buf;
1234 fd_intern (evpipe [1]); 2638 buf.len = 1;
1235 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
1236 } 2643 }
1237
1238 ev_io_start (EV_A_ &pipe_w);
1239 ev_unref (EV_A); /* watcher should not keep loop alive */
1240 }
1241}
1242
1243inline_size void
1244evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1245{
1246 if (!*flag)
1247 {
1248 int old_errno = errno; /* save errno because write might clobber it */
1249
1250 *flag = 1;
1251
1252#if EV_USE_EVENTFD
1253 if (evfd >= 0)
1254 {
1255 uint64_t counter = 1;
1256 write (evfd, &counter, sizeof (uint64_t));
1257 }
1258 else
1259#endif
1260 write (evpipe [1], &old_errno, 1);
1261 2644
1262 errno = old_errno; 2645 errno = old_errno;
1263 } 2646 }
1264} 2647}
1265 2648
… …
1268static void 2651static void
1269pipecb (EV_P_ ev_io *iow, int revents) 2652pipecb (EV_P_ ev_io *iow, int revents)
1270{ 2653{
1271 int i; 2654 int i;
1272 2655
2656 if (revents & EV_READ)
2657 {
1273#if EV_USE_EVENTFD 2658#if EV_USE_EVENTFD
1274 if (evfd >= 0) 2659 if (evpipe [0] < 0)
1275 { 2660 {
1276 uint64_t counter; 2661 uint64_t counter;
1277 read (evfd, &counter, sizeof (uint64_t)); 2662 read (evpipe [1], &counter, sizeof (uint64_t));
1278 } 2663 }
1279 else 2664 else
1280#endif 2665#endif
1281 { 2666 {
1282 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
1283 read (evpipe [0], &dummy, 1); 2676 read (evpipe [0], &dummy, sizeof (dummy));
2677#endif
2678 }
1284 } 2679 }
1285 2680
2681 pipe_write_skipped = 0;
2682
2683 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2684
2685#if EV_SIGNAL_ENABLE
1286 if (sig_pending) 2686 if (sig_pending)
1287 { 2687 {
1288 sig_pending = 0; 2688 sig_pending = 0;
1289 2689
2690 ECB_MEMORY_FENCE;
2691
1290 for (i = EV_NSIG - 1; i--; ) 2692 for (i = EV_NSIG - 1; i--; )
1291 if (expect_false (signals [i].pending)) 2693 if (ecb_expect_false (signals [i].pending))
1292 ev_feed_signal_event (EV_A_ i + 1); 2694 ev_feed_signal_event (EV_A_ i + 1);
1293 } 2695 }
2696#endif
1294 2697
1295#if EV_ASYNC_ENABLE 2698#if EV_ASYNC_ENABLE
1296 if (async_pending) 2699 if (async_pending)
1297 { 2700 {
1298 async_pending = 0; 2701 async_pending = 0;
2702
2703 ECB_MEMORY_FENCE;
1299 2704
1300 for (i = asynccnt; i--; ) 2705 for (i = asynccnt; i--; )
1301 if (asyncs [i]->sent) 2706 if (asyncs [i]->sent)
1302 { 2707 {
1303 asyncs [i]->sent = 0; 2708 asyncs [i]->sent = 0;
2709 ECB_MEMORY_FENCE_RELEASE;
1304 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2710 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1305 } 2711 }
1306 } 2712 }
1307#endif 2713#endif
1308} 2714}
1309 2715
1310/*****************************************************************************/ 2716/*****************************************************************************/
1311 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
1312static void 2734static void
1313ev_sighandler (int signum) 2735ev_sighandler (int signum)
1314{ 2736{
1315#if EV_MULTIPLICITY
1316 EV_P = signals [signum - 1].loop;
1317#endif
1318
1319#ifdef _WIN32 2737#ifdef _WIN32
1320 signal (signum, ev_sighandler); 2738 signal (signum, ev_sighandler);
1321#endif 2739#endif
1322 2740
1323 signals [signum - 1].pending = 1; 2741 ev_feed_signal (signum);
1324 evpipe_write (EV_A_ &sig_pending);
1325} 2742}
1326 2743
1327void noinline 2744ecb_noinline
2745void
1328ev_feed_signal_event (EV_P_ int signum) 2746ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
1329{ 2747{
1330 WL w; 2748 WL w;
1331 2749
1332 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2750 if (ecb_expect_false (signum <= 0 || signum >= EV_NSIG))
1333 return; 2751 return;
1334 2752
1335 --signum; 2753 --signum;
1336 2754
1337#if EV_MULTIPLICITY 2755#if EV_MULTIPLICITY
1338 /* 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 */
1339 /* or, likely more useful, feeding a signal nobody is waiting for */ 2757 /* or, likely more useful, feeding a signal nobody is waiting for */
1340 2758
1341 if (expect_false (signals [signum].loop != EV_A)) 2759 if (ecb_expect_false (signals [signum].loop != EV_A))
1342 return; 2760 return;
1343#endif 2761#endif
1344 2762
1345 signals [signum].pending = 0; 2763 signals [signum].pending = 0;
2764 ECB_MEMORY_FENCE_RELEASE;
1346 2765
1347 for (w = signals [signum].head; w; w = w->next) 2766 for (w = signals [signum].head; w; w = w->next)
1348 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2767 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1349} 2768}
1350 2769
… …
1366 break; 2785 break;
1367 } 2786 }
1368} 2787}
1369#endif 2788#endif
1370 2789
2790#endif
2791
1371/*****************************************************************************/ 2792/*****************************************************************************/
1372 2793
2794#if EV_CHILD_ENABLE
1373static WL childs [EV_PID_HASHSIZE]; 2795static WL childs [EV_PID_HASHSIZE];
1374
1375#ifndef _WIN32
1376 2796
1377static ev_signal childev; 2797static ev_signal childev;
1378 2798
1379#ifndef WIFCONTINUED 2799#ifndef WIFCONTINUED
1380# define WIFCONTINUED(status) 0 2800# define WIFCONTINUED(status) 0
… …
1385child_reap (EV_P_ int chain, int pid, int status) 2805child_reap (EV_P_ int chain, int pid, int status)
1386{ 2806{
1387 ev_child *w; 2807 ev_child *w;
1388 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2808 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1389 2809
1390 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)
1391 { 2811 {
1392 if ((w->pid == pid || !w->pid) 2812 if ((w->pid == pid || !w->pid)
1393 && (!traced || (w->flags & 1))) 2813 && (!traced || (w->flags & 1)))
1394 { 2814 {
1395 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 */
… …
1420 /* 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 */
1421 /* 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 */
1422 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2842 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1423 2843
1424 child_reap (EV_A_ pid, pid, status); 2844 child_reap (EV_A_ pid, pid, status);
1425 if (EV_PID_HASHSIZE > 1) 2845 if ((EV_PID_HASHSIZE) > 1)
1426 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 */
1427} 2847}
1428 2848
1429#endif 2849#endif
1430 2850
1431/*****************************************************************************/ 2851/*****************************************************************************/
1432 2852
2853#if EV_USE_IOCP
2854# include "ev_iocp.c"
2855#endif
1433#if EV_USE_PORT 2856#if EV_USE_PORT
1434# include "ev_port.c" 2857# include "ev_port.c"
1435#endif 2858#endif
1436#if EV_USE_KQUEUE 2859#if EV_USE_KQUEUE
1437# include "ev_kqueue.c" 2860# include "ev_kqueue.c"
1438#endif 2861#endif
1439#if EV_USE_EPOLL 2862#if EV_USE_EPOLL
1440# include "ev_epoll.c" 2863# include "ev_epoll.c"
1441#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
1442#if EV_USE_POLL 2871#if EV_USE_POLL
1443# include "ev_poll.c" 2872# include "ev_poll.c"
1444#endif 2873#endif
1445#if EV_USE_SELECT 2874#if EV_USE_SELECT
1446# include "ev_select.c" 2875# include "ev_select.c"
1447#endif 2876#endif
1448 2877
1449int 2878ecb_cold int
1450ev_version_major (void) 2879ev_version_major (void) EV_NOEXCEPT
1451{ 2880{
1452 return EV_VERSION_MAJOR; 2881 return EV_VERSION_MAJOR;
1453} 2882}
1454 2883
1455int 2884ecb_cold int
1456ev_version_minor (void) 2885ev_version_minor (void) EV_NOEXCEPT
1457{ 2886{
1458 return EV_VERSION_MINOR; 2887 return EV_VERSION_MINOR;
1459} 2888}
1460 2889
1461/* 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 */
1462int inline_size 2891inline_size ecb_cold int
1463enable_secure (void) 2892enable_secure (void)
1464{ 2893{
1465#ifdef _WIN32 2894#ifdef _WIN32
1466 return 0; 2895 return 0;
1467#else 2896#else
1468 return getuid () != geteuid () 2897 return getuid () != geteuid ()
1469 || getgid () != getegid (); 2898 || getgid () != getegid ();
1470#endif 2899#endif
1471} 2900}
1472 2901
2902ecb_cold
1473unsigned int 2903unsigned int
1474ev_supported_backends (void) 2904ev_supported_backends (void) EV_NOEXCEPT
1475{ 2905{
1476 unsigned int flags = 0; 2906 unsigned int flags = 0;
1477 2907
1478 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2908 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1479 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2909 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
1480 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;
1481 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 2913 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
1482 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2914 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
1483 2915
1484 return flags; 2916 return flags;
1485} 2917}
1486 2918
2919ecb_cold
1487unsigned int 2920unsigned int
1488ev_recommended_backends (void) 2921ev_recommended_backends (void) EV_NOEXCEPT
1489{ 2922{
1490 unsigned int flags = ev_supported_backends (); 2923 unsigned int flags = ev_supported_backends ();
1491 2924
1492#ifndef __NetBSD__ 2925#ifndef __NetBSD__
1493 /* kqueue is borked on everything but netbsd apparently */ 2926 /* kqueue is borked on everything but netbsd apparently */
… …
1497#ifdef __APPLE__ 2930#ifdef __APPLE__
1498 /* only select works correctly on that "unix-certified" platform */ 2931 /* only select works correctly on that "unix-certified" platform */
1499 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2932 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1500 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 */
1501#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
1502 2947
1503 return flags; 2948 return flags;
1504} 2949}
1505 2950
2951ecb_cold
1506unsigned int 2952unsigned int
1507ev_embeddable_backends (void) 2953ev_embeddable_backends (void) EV_NOEXCEPT
1508{ 2954{
1509 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2955 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1510 2956
1511 /* 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 */
1512 /* please fix it and tell me how to detect the fix */ 2958 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1513 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 */
1514 2967
1515 return flags; 2968 return flags;
1516} 2969}
1517 2970
1518unsigned int 2971unsigned int
1519ev_backend (EV_P) 2972ev_backend (EV_P) EV_NOEXCEPT
1520{ 2973{
1521 return backend; 2974 return backend;
1522} 2975}
1523 2976
1524#if EV_MINIMAL < 2 2977#if EV_FEATURE_API
1525unsigned int 2978unsigned int
1526ev_loop_count (EV_P) 2979ev_iteration (EV_P) EV_NOEXCEPT
1527{ 2980{
1528 return loop_count; 2981 return loop_count;
1529} 2982}
1530 2983
1531unsigned int 2984unsigned int
1532ev_loop_depth (EV_P) 2985ev_depth (EV_P) EV_NOEXCEPT
1533{ 2986{
1534 return loop_depth; 2987 return loop_depth;
1535} 2988}
1536 2989
1537void 2990void
1538ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2991ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1539{ 2992{
1540 io_blocktime = interval; 2993 io_blocktime = interval;
1541} 2994}
1542 2995
1543void 2996void
1544ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2997ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1545{ 2998{
1546 timeout_blocktime = interval; 2999 timeout_blocktime = interval;
1547} 3000}
1548 3001
1549void 3002void
1550ev_set_userdata (EV_P_ void *data) 3003ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
1551{ 3004{
1552 userdata = data; 3005 userdata = data;
1553} 3006}
1554 3007
1555void * 3008void *
1556ev_userdata (EV_P) 3009ev_userdata (EV_P) EV_NOEXCEPT
1557{ 3010{
1558 return userdata; 3011 return userdata;
1559} 3012}
1560 3013
3014void
1561void 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
1562{ 3016{
1563 invoke_cb = invoke_pending_cb; 3017 invoke_cb = invoke_pending_cb;
1564} 3018}
1565 3019
3020void
1566void 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
1567{ 3022{
1568 release_cb = release; 3023 release_cb = release;
1569 acquire_cb = acquire; 3024 acquire_cb = acquire;
1570} 3025}
1571#endif 3026#endif
1572 3027
1573/* initialise a loop structure, must be zero-initialised */ 3028/* initialise a loop structure, must be zero-initialised */
1574static void noinline 3029ecb_noinline ecb_cold
3030static void
1575loop_init (EV_P_ unsigned int flags) 3031loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
1576{ 3032{
1577 if (!backend) 3033 if (!backend)
1578 { 3034 {
3035 origflags = flags;
3036
1579#if EV_USE_REALTIME 3037#if EV_USE_REALTIME
1580 if (!have_realtime) 3038 if (!have_realtime)
1581 { 3039 {
1582 struct timespec ts; 3040 struct timespec ts;
1583 3041
… …
1605 if (!(flags & EVFLAG_NOENV) 3063 if (!(flags & EVFLAG_NOENV)
1606 && !enable_secure () 3064 && !enable_secure ()
1607 && getenv ("LIBEV_FLAGS")) 3065 && getenv ("LIBEV_FLAGS"))
1608 flags = atoi (getenv ("LIBEV_FLAGS")); 3066 flags = atoi (getenv ("LIBEV_FLAGS"));
1609 3067
1610 ev_rt_now = ev_time (); 3068 ev_rt_now = ev_time ();
1611 mn_now = get_clock (); 3069 mn_now = get_clock ();
1612 now_floor = mn_now; 3070 now_floor = mn_now;
1613 rtmn_diff = ev_rt_now - mn_now; 3071 rtmn_diff = ev_rt_now - mn_now;
1614#if EV_MINIMAL < 2 3072#if EV_FEATURE_API
1615 invoke_cb = ev_invoke_pending; 3073 invoke_cb = ev_invoke_pending;
1616#endif 3074#endif
1617 3075
1618 io_blocktime = 0.; 3076 io_blocktime = 0.;
1619 timeout_blocktime = 0.; 3077 timeout_blocktime = 0.;
1620 backend = 0; 3078 backend = 0;
1621 backend_fd = -1; 3079 backend_fd = -1;
1622 sig_pending = 0; 3080 sig_pending = 0;
1623#if EV_ASYNC_ENABLE 3081#if EV_ASYNC_ENABLE
1624 async_pending = 0; 3082 async_pending = 0;
1625#endif 3083#endif
3084 pipe_write_skipped = 0;
3085 pipe_write_wanted = 0;
3086 evpipe [0] = -1;
3087 evpipe [1] = -1;
1626#if EV_USE_INOTIFY 3088#if EV_USE_INOTIFY
1627 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 3089 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1628#endif 3090#endif
1629#if EV_USE_SIGNALFD 3091#if EV_USE_SIGNALFD
1630 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 3092 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1631#endif 3093#endif
1632 3094
1633 if (!(flags & 0x0000ffffU)) 3095 if (!(flags & EVBACKEND_MASK))
1634 flags |= ev_recommended_backends (); 3096 flags |= ev_recommended_backends ();
1635 3097
3098#if EV_USE_IOCP
3099 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
3100#endif
1636#if EV_USE_PORT 3101#if EV_USE_PORT
1637 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 3102 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1638#endif 3103#endif
1639#if EV_USE_KQUEUE 3104#if EV_USE_KQUEUE
1640 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);
1641#endif 3112#endif
1642#if EV_USE_EPOLL 3113#if EV_USE_EPOLL
1643 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 3114 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
1644#endif 3115#endif
1645#if EV_USE_POLL 3116#if EV_USE_POLL
1646 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 3117 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
1647#endif 3118#endif
1648#if EV_USE_SELECT 3119#if EV_USE_SELECT
1649 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 3120 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
1650#endif 3121#endif
1651 3122
1652 ev_prepare_init (&pending_w, pendingcb); 3123 ev_prepare_init (&pending_w, pendingcb);
1653 3124
3125#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1654 ev_init (&pipe_w, pipecb); 3126 ev_init (&pipe_w, pipecb);
1655 ev_set_priority (&pipe_w, EV_MAXPRI); 3127 ev_set_priority (&pipe_w, EV_MAXPRI);
3128#endif
1656 } 3129 }
1657} 3130}
1658 3131
1659/* free up a loop structure */ 3132/* free up a loop structure */
1660static void noinline 3133ecb_cold
3134void
1661loop_destroy (EV_P) 3135ev_loop_destroy (EV_P)
1662{ 3136{
1663 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
1664 3161
1665 if (ev_is_active (&pipe_w)) 3162 if (ev_is_active (&pipe_w))
1666 { 3163 {
1667 /*ev_ref (EV_A);*/ 3164 /*ev_ref (EV_A);*/
1668 /*ev_io_stop (EV_A_ &pipe_w);*/ 3165 /*ev_io_stop (EV_A_ &pipe_w);*/
1669 3166
1670#if EV_USE_EVENTFD
1671 if (evfd >= 0)
1672 close (evfd);
1673#endif
1674
1675 if (evpipe [0] >= 0)
1676 {
1677 EV_WIN32_CLOSE_FD (evpipe [0]); 3167 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1678 EV_WIN32_CLOSE_FD (evpipe [1]); 3168 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1679 }
1680 } 3169 }
1681 3170
1682#if EV_USE_SIGNALFD 3171#if EV_USE_SIGNALFD
1683 if (ev_is_active (&sigfd_w)) 3172 if (ev_is_active (&sigfd_w))
1684 close (sigfd); 3173 close (sigfd);
… …
1690#endif 3179#endif
1691 3180
1692 if (backend_fd >= 0) 3181 if (backend_fd >= 0)
1693 close (backend_fd); 3182 close (backend_fd);
1694 3183
3184#if EV_USE_IOCP
3185 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
3186#endif
1695#if EV_USE_PORT 3187#if EV_USE_PORT
1696 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3188 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1697#endif 3189#endif
1698#if EV_USE_KQUEUE 3190#if EV_USE_KQUEUE
1699 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);
1700#endif 3198#endif
1701#if EV_USE_EPOLL 3199#if EV_USE_EPOLL
1702 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3200 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
1703#endif 3201#endif
1704#if EV_USE_POLL 3202#if EV_USE_POLL
1705 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3203 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
1706#endif 3204#endif
1707#if EV_USE_SELECT 3205#if EV_USE_SELECT
1708 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3206 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
1709#endif 3207#endif
1710 3208
1711 for (i = NUMPRI; i--; ) 3209 for (i = NUMPRI; i--; )
1712 { 3210 {
1713 array_free (pending, [i]); 3211 array_free (pending, [i]);
… …
1726 array_free (periodic, EMPTY); 3224 array_free (periodic, EMPTY);
1727#endif 3225#endif
1728#if EV_FORK_ENABLE 3226#if EV_FORK_ENABLE
1729 array_free (fork, EMPTY); 3227 array_free (fork, EMPTY);
1730#endif 3228#endif
3229#if EV_CLEANUP_ENABLE
3230 array_free (cleanup, EMPTY);
3231#endif
1731 array_free (prepare, EMPTY); 3232 array_free (prepare, EMPTY);
1732 array_free (check, EMPTY); 3233 array_free (check, EMPTY);
1733#if EV_ASYNC_ENABLE 3234#if EV_ASYNC_ENABLE
1734 array_free (async, EMPTY); 3235 array_free (async, EMPTY);
1735#endif 3236#endif
1736 3237
1737 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
1738} 3248}
1739 3249
1740#if EV_USE_INOTIFY 3250#if EV_USE_INOTIFY
1741inline_size void infy_fork (EV_P); 3251inline_size void infy_fork (EV_P);
1742#endif 3252#endif
1743 3253
1744inline_size void 3254inline_size void
1745loop_fork (EV_P) 3255loop_fork (EV_P)
1746{ 3256{
1747#if EV_USE_PORT 3257#if EV_USE_PORT
1748 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3258 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1749#endif 3259#endif
1750#if EV_USE_KQUEUE 3260#if EV_USE_KQUEUE
1751 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);
1752#endif 3268#endif
1753#if EV_USE_EPOLL 3269#if EV_USE_EPOLL
1754 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3270 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
1755#endif 3271#endif
1756#if EV_USE_INOTIFY 3272#if EV_USE_INOTIFY
1757 infy_fork (EV_A); 3273 infy_fork (EV_A);
1758#endif 3274#endif
1759 3275
3276#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1760 if (ev_is_active (&pipe_w)) 3277 if (ev_is_active (&pipe_w) && postfork != 2)
1761 { 3278 {
1762 /* this "locks" the handlers against writing to the pipe */ 3279 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1763 /* while we modify the fd vars */
1764 sig_pending = 1;
1765#if EV_ASYNC_ENABLE
1766 async_pending = 1;
1767#endif
1768 3280
1769 ev_ref (EV_A); 3281 ev_ref (EV_A);
1770 ev_io_stop (EV_A_ &pipe_w); 3282 ev_io_stop (EV_A_ &pipe_w);
1771 3283
1772#if EV_USE_EVENTFD
1773 if (evfd >= 0)
1774 close (evfd);
1775#endif
1776
1777 if (evpipe [0] >= 0) 3284 if (evpipe [0] >= 0)
1778 {
1779 EV_WIN32_CLOSE_FD (evpipe [0]); 3285 EV_WIN32_CLOSE_FD (evpipe [0]);
1780 EV_WIN32_CLOSE_FD (evpipe [1]);
1781 }
1782 3286
1783 evpipe_init (EV_A); 3287 evpipe_init (EV_A);
1784 /* now iterate over everything, in case we missed something */ 3288 /* iterate over everything, in case we missed something before */
1785 pipecb (EV_A_ &pipe_w, EV_READ); 3289 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1786 } 3290 }
3291#endif
1787 3292
1788 postfork = 0; 3293 postfork = 0;
1789} 3294}
1790 3295
1791#if EV_MULTIPLICITY 3296#if EV_MULTIPLICITY
1792 3297
3298ecb_cold
1793struct ev_loop * 3299struct ev_loop *
1794ev_loop_new (unsigned int flags) 3300ev_loop_new (unsigned int flags) EV_NOEXCEPT
1795{ 3301{
1796 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3302 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1797 3303
1798 memset (EV_A, 0, sizeof (struct ev_loop)); 3304 memset (EV_A, 0, sizeof (struct ev_loop));
1799 loop_init (EV_A_ flags); 3305 loop_init (EV_A_ flags);
1800 3306
1801 if (ev_backend (EV_A)) 3307 if (ev_backend (EV_A))
1802 return EV_A; 3308 return EV_A;
1803 3309
3310 ev_free (EV_A);
1804 return 0; 3311 return 0;
1805} 3312}
1806 3313
1807void
1808ev_loop_destroy (EV_P)
1809{
1810 loop_destroy (EV_A);
1811 ev_free (loop);
1812}
1813
1814void
1815ev_loop_fork (EV_P)
1816{
1817 postfork = 1; /* must be in line with ev_default_fork */
1818}
1819#endif /* multiplicity */ 3314#endif /* multiplicity */
1820 3315
1821#if EV_VERIFY 3316#if EV_VERIFY
1822static void noinline 3317ecb_noinline ecb_cold
3318static void
1823verify_watcher (EV_P_ W w) 3319verify_watcher (EV_P_ W w)
1824{ 3320{
1825 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));
1826 3322
1827 if (w->pending) 3323 if (w->pending)
1828 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));
1829} 3325}
1830 3326
1831static void noinline 3327ecb_noinline ecb_cold
3328static void
1832verify_heap (EV_P_ ANHE *heap, int N) 3329verify_heap (EV_P_ ANHE *heap, int N)
1833{ 3330{
1834 int i; 3331 int i;
1835 3332
1836 for (i = HEAP0; i < N + HEAP0; ++i) 3333 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1841 3338
1842 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3339 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1843 } 3340 }
1844} 3341}
1845 3342
1846static void noinline 3343ecb_noinline ecb_cold
3344static void
1847array_verify (EV_P_ W *ws, int cnt) 3345array_verify (EV_P_ W *ws, int cnt)
1848{ 3346{
1849 while (cnt--) 3347 while (cnt--)
1850 { 3348 {
1851 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3349 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1852 verify_watcher (EV_A_ ws [cnt]); 3350 verify_watcher (EV_A_ ws [cnt]);
1853 } 3351 }
1854} 3352}
1855#endif 3353#endif
1856 3354
1857#if EV_MINIMAL < 2 3355#if EV_FEATURE_API
1858void 3356void ecb_cold
1859ev_loop_verify (EV_P) 3357ev_verify (EV_P) EV_NOEXCEPT
1860{ 3358{
1861#if EV_VERIFY 3359#if EV_VERIFY
1862 int i; 3360 int i;
1863 WL w; 3361 WL w, w2;
1864 3362
1865 assert (activecnt >= -1); 3363 assert (activecnt >= -1);
1866 3364
1867 assert (fdchangemax >= fdchangecnt); 3365 assert (fdchangemax >= fdchangecnt);
1868 for (i = 0; i < fdchangecnt; ++i) 3366 for (i = 0; i < fdchangecnt; ++i)
1869 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3367 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1870 3368
1871 assert (anfdmax >= 0); 3369 assert (anfdmax >= 0);
1872 for (i = 0; i < anfdmax; ++i) 3370 for (i = 0; i < anfdmax; ++i)
3371 {
3372 int j = 0;
3373
1873 for (w = anfds [i].head; w; w = w->next) 3374 for (w = w2 = anfds [i].head; w; w = w->next)
1874 { 3375 {
1875 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
1876 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));
1877 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));
1878 } 3386 }
3387 }
1879 3388
1880 assert (timermax >= timercnt); 3389 assert (timermax >= timercnt);
1881 verify_heap (EV_A_ timers, timercnt); 3390 verify_heap (EV_A_ timers, timercnt);
1882 3391
1883#if EV_PERIODIC_ENABLE 3392#if EV_PERIODIC_ENABLE
… …
1898#if EV_FORK_ENABLE 3407#if EV_FORK_ENABLE
1899 assert (forkmax >= forkcnt); 3408 assert (forkmax >= forkcnt);
1900 array_verify (EV_A_ (W *)forks, forkcnt); 3409 array_verify (EV_A_ (W *)forks, forkcnt);
1901#endif 3410#endif
1902 3411
3412#if EV_CLEANUP_ENABLE
3413 assert (cleanupmax >= cleanupcnt);
3414 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
3415#endif
3416
1903#if EV_ASYNC_ENABLE 3417#if EV_ASYNC_ENABLE
1904 assert (asyncmax >= asynccnt); 3418 assert (asyncmax >= asynccnt);
1905 array_verify (EV_A_ (W *)asyncs, asynccnt); 3419 array_verify (EV_A_ (W *)asyncs, asynccnt);
1906#endif 3420#endif
1907 3421
3422#if EV_PREPARE_ENABLE
1908 assert (preparemax >= preparecnt); 3423 assert (preparemax >= preparecnt);
1909 array_verify (EV_A_ (W *)prepares, preparecnt); 3424 array_verify (EV_A_ (W *)prepares, preparecnt);
3425#endif
1910 3426
3427#if EV_CHECK_ENABLE
1911 assert (checkmax >= checkcnt); 3428 assert (checkmax >= checkcnt);
1912 array_verify (EV_A_ (W *)checks, checkcnt); 3429 array_verify (EV_A_ (W *)checks, checkcnt);
3430#endif
1913 3431
1914# if 0 3432# if 0
3433#if EV_CHILD_ENABLE
1915 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)
1916 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending) 3435 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
3436#endif
1917# endif 3437# endif
1918#endif 3438#endif
1919} 3439}
1920#endif 3440#endif
1921 3441
1922#if EV_MULTIPLICITY 3442#if EV_MULTIPLICITY
3443ecb_cold
1923struct ev_loop * 3444struct ev_loop *
1924ev_default_loop_init (unsigned int flags)
1925#else 3445#else
1926int 3446int
3447#endif
1927ev_default_loop (unsigned int flags) 3448ev_default_loop (unsigned int flags) EV_NOEXCEPT
1928#endif
1929{ 3449{
1930 if (!ev_default_loop_ptr) 3450 if (!ev_default_loop_ptr)
1931 { 3451 {
1932#if EV_MULTIPLICITY 3452#if EV_MULTIPLICITY
1933 EV_P = ev_default_loop_ptr = &default_loop_struct; 3453 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1937 3457
1938 loop_init (EV_A_ flags); 3458 loop_init (EV_A_ flags);
1939 3459
1940 if (ev_backend (EV_A)) 3460 if (ev_backend (EV_A))
1941 { 3461 {
1942#ifndef _WIN32 3462#if EV_CHILD_ENABLE
1943 ev_signal_init (&childev, childcb, SIGCHLD); 3463 ev_signal_init (&childev, childcb, SIGCHLD);
1944 ev_set_priority (&childev, EV_MAXPRI); 3464 ev_set_priority (&childev, EV_MAXPRI);
1945 ev_signal_start (EV_A_ &childev); 3465 ev_signal_start (EV_A_ &childev);
1946 ev_unref (EV_A); /* child watcher should not keep loop alive */ 3466 ev_unref (EV_A); /* child watcher should not keep loop alive */
1947#endif 3467#endif
… …
1952 3472
1953 return ev_default_loop_ptr; 3473 return ev_default_loop_ptr;
1954} 3474}
1955 3475
1956void 3476void
1957ev_default_destroy (void) 3477ev_loop_fork (EV_P) EV_NOEXCEPT
1958{ 3478{
1959#if EV_MULTIPLICITY 3479 postfork = 1;
1960 EV_P = ev_default_loop_ptr;
1961#endif
1962
1963 ev_default_loop_ptr = 0;
1964
1965#ifndef _WIN32
1966 ev_ref (EV_A); /* child watcher */
1967 ev_signal_stop (EV_A_ &childev);
1968#endif
1969
1970 loop_destroy (EV_A);
1971}
1972
1973void
1974ev_default_fork (void)
1975{
1976#if EV_MULTIPLICITY
1977 EV_P = ev_default_loop_ptr;
1978#endif
1979
1980 postfork = 1; /* must be in line with ev_loop_fork */
1981} 3480}
1982 3481
1983/*****************************************************************************/ 3482/*****************************************************************************/
1984 3483
1985void 3484void
… …
1987{ 3486{
1988 EV_CB_INVOKE ((W)w, revents); 3487 EV_CB_INVOKE ((W)w, revents);
1989} 3488}
1990 3489
1991unsigned int 3490unsigned int
1992ev_pending_count (EV_P) 3491ev_pending_count (EV_P) EV_NOEXCEPT
1993{ 3492{
1994 int pri; 3493 int pri;
1995 unsigned int count = 0; 3494 unsigned int count = 0;
1996 3495
1997 for (pri = NUMPRI; pri--; ) 3496 for (pri = NUMPRI; pri--; )
1998 count += pendingcnt [pri]; 3497 count += pendingcnt [pri];
1999 3498
2000 return count; 3499 return count;
2001} 3500}
2002 3501
2003void noinline 3502ecb_noinline
3503void
2004ev_invoke_pending (EV_P) 3504ev_invoke_pending (EV_P)
2005{ 3505{
2006 int pri; 3506 pendingpri = NUMPRI;
2007 3507
2008 for (pri = NUMPRI; pri--; ) 3508 do
3509 {
3510 --pendingpri;
3511
3512 /* pendingpri possibly gets modified in the inner loop */
2009 while (pendingcnt [pri]) 3513 while (pendingcnt [pendingpri])
2010 { 3514 {
2011 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3515 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2012 3516
2013 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2014 /* ^ this is no longer true, as pending_w could be here */
2015
2016 p->w->pending = 0; 3517 p->w->pending = 0;
2017 EV_CB_INVOKE (p->w, p->events); 3518 EV_CB_INVOKE (p->w, p->events);
2018 EV_FREQUENT_CHECK; 3519 EV_FREQUENT_CHECK;
2019 } 3520 }
3521 }
3522 while (pendingpri);
2020} 3523}
2021 3524
2022#if EV_IDLE_ENABLE 3525#if EV_IDLE_ENABLE
2023/* make idle watchers pending. this handles the "call-idle */ 3526/* make idle watchers pending. this handles the "call-idle */
2024/* only when higher priorities are idle" logic */ 3527/* only when higher priorities are idle" logic */
2025inline_size void 3528inline_size void
2026idle_reify (EV_P) 3529idle_reify (EV_P)
2027{ 3530{
2028 if (expect_false (idleall)) 3531 if (ecb_expect_false (idleall))
2029 { 3532 {
2030 int pri; 3533 int pri;
2031 3534
2032 for (pri = NUMPRI; pri--; ) 3535 for (pri = NUMPRI; pri--; )
2033 { 3536 {
… …
2063 { 3566 {
2064 ev_at (w) += w->repeat; 3567 ev_at (w) += w->repeat;
2065 if (ev_at (w) < mn_now) 3568 if (ev_at (w) < mn_now)
2066 ev_at (w) = mn_now; 3569 ev_at (w) = mn_now;
2067 3570
2068 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.)));
2069 3572
2070 ANHE_at_cache (timers [HEAP0]); 3573 ANHE_at_cache (timers [HEAP0]);
2071 downheap (timers, timercnt, HEAP0); 3574 downheap (timers, timercnt, HEAP0);
2072 } 3575 }
2073 else 3576 else
… …
2076 EV_FREQUENT_CHECK; 3579 EV_FREQUENT_CHECK;
2077 feed_reverse (EV_A_ (W)w); 3580 feed_reverse (EV_A_ (W)w);
2078 } 3581 }
2079 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 3582 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
2080 3583
2081 feed_reverse_done (EV_A_ EV_TIMEOUT); 3584 feed_reverse_done (EV_A_ EV_TIMER);
2082 } 3585 }
2083} 3586}
2084 3587
2085#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
2086/* make periodics pending */ 3615/* make periodics pending */
2087inline_size void 3616inline_size void
2088periodics_reify (EV_P) 3617periodics_reify (EV_P)
2089{ 3618{
2090 EV_FREQUENT_CHECK; 3619 EV_FREQUENT_CHECK;
2091 3620
2092 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3621 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2093 { 3622 {
2094 int feed_count = 0;
2095
2096 do 3623 do
2097 { 3624 {
2098 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3625 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2099 3626
2100 /*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)));*/
… …
2109 ANHE_at_cache (periodics [HEAP0]); 3636 ANHE_at_cache (periodics [HEAP0]);
2110 downheap (periodics, periodiccnt, HEAP0); 3637 downheap (periodics, periodiccnt, HEAP0);
2111 } 3638 }
2112 else if (w->interval) 3639 else if (w->interval)
2113 { 3640 {
2114 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3641 periodic_recalc (EV_A_ w);
2115 /* if next trigger time is not sufficiently in the future, put it there */
2116 /* this might happen because of floating point inexactness */
2117 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2118 {
2119 ev_at (w) += w->interval;
2120
2121 /* if interval is unreasonably low we might still have a time in the past */
2122 /* so correct this. this will make the periodic very inexact, but the user */
2123 /* has effectively asked to get triggered more often than possible */
2124 if (ev_at (w) < ev_rt_now)
2125 ev_at (w) = ev_rt_now;
2126 }
2127
2128 ANHE_at_cache (periodics [HEAP0]); 3642 ANHE_at_cache (periodics [HEAP0]);
2129 downheap (periodics, periodiccnt, HEAP0); 3643 downheap (periodics, periodiccnt, HEAP0);
2130 } 3644 }
2131 else 3645 else
2132 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3646 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2139 feed_reverse_done (EV_A_ EV_PERIODIC); 3653 feed_reverse_done (EV_A_ EV_PERIODIC);
2140 } 3654 }
2141} 3655}
2142 3656
2143/* simply recalculate all periodics */ 3657/* simply recalculate all periodics */
2144/* 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? */
2145static void noinline 3659ecb_noinline ecb_cold
3660static void
2146periodics_reschedule (EV_P) 3661periodics_reschedule (EV_P)
2147{ 3662{
2148 int i; 3663 int i;
2149 3664
2150 /* adjust periodics after time jump */ 3665 /* adjust periodics after time jump */
… …
2153 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3668 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2154 3669
2155 if (w->reschedule_cb) 3670 if (w->reschedule_cb)
2156 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3671 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2157 else if (w->interval) 3672 else if (w->interval)
2158 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3673 periodic_recalc (EV_A_ w);
2159 3674
2160 ANHE_at_cache (periodics [i]); 3675 ANHE_at_cache (periodics [i]);
2161 } 3676 }
2162 3677
2163 reheap (periodics, periodiccnt); 3678 reheap (periodics, periodiccnt);
2164} 3679}
2165#endif 3680#endif
2166 3681
2167/* adjust all timers by a given offset */ 3682/* adjust all timers by a given offset */
2168static void noinline 3683ecb_noinline ecb_cold
3684static void
2169timers_reschedule (EV_P_ ev_tstamp adjust) 3685timers_reschedule (EV_P_ ev_tstamp adjust)
2170{ 3686{
2171 int i; 3687 int i;
2172 3688
2173 for (i = 0; i < timercnt; ++i) 3689 for (i = 0; i < timercnt; ++i)
… …
2182/* also detect if there was a timejump, and act accordingly */ 3698/* also detect if there was a timejump, and act accordingly */
2183inline_speed void 3699inline_speed void
2184time_update (EV_P_ ev_tstamp max_block) 3700time_update (EV_P_ ev_tstamp max_block)
2185{ 3701{
2186#if EV_USE_MONOTONIC 3702#if EV_USE_MONOTONIC
2187 if (expect_true (have_monotonic)) 3703 if (ecb_expect_true (have_monotonic))
2188 { 3704 {
2189 int i; 3705 int i;
2190 ev_tstamp odiff = rtmn_diff; 3706 ev_tstamp odiff = rtmn_diff;
2191 3707
2192 mn_now = get_clock (); 3708 mn_now = get_clock ();
2193 3709
2194 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3710 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
2195 /* interpolate in the meantime */ 3711 /* interpolate in the meantime */
2196 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)))
2197 { 3713 {
2198 ev_rt_now = rtmn_diff + mn_now; 3714 ev_rt_now = rtmn_diff + mn_now;
2199 return; 3715 return;
2200 } 3716 }
2201 3717
… …
2210 * 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
2211 * in the unlikely event of having been preempted here. 3727 * in the unlikely event of having been preempted here.
2212 */ 3728 */
2213 for (i = 4; --i; ) 3729 for (i = 4; --i; )
2214 { 3730 {
3731 ev_tstamp diff;
2215 rtmn_diff = ev_rt_now - mn_now; 3732 rtmn_diff = ev_rt_now - mn_now;
2216 3733
2217 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)))
2218 return; /* all is well */ 3737 return; /* all is well */
2219 3738
2220 ev_rt_now = ev_time (); 3739 ev_rt_now = ev_time ();
2221 mn_now = get_clock (); 3740 mn_now = get_clock ();
2222 now_floor = mn_now; 3741 now_floor = mn_now;
… …
2231 else 3750 else
2232#endif 3751#endif
2233 { 3752 {
2234 ev_rt_now = ev_time (); 3753 ev_rt_now = ev_time ();
2235 3754
2236 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)))
2237 { 3756 {
2238 /* 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 */
2239 timers_reschedule (EV_A_ ev_rt_now - mn_now); 3758 timers_reschedule (EV_A_ ev_rt_now - mn_now);
2240#if EV_PERIODIC_ENABLE 3759#if EV_PERIODIC_ENABLE
2241 periodics_reschedule (EV_A); 3760 periodics_reschedule (EV_A);
… …
2244 3763
2245 mn_now = ev_rt_now; 3764 mn_now = ev_rt_now;
2246 } 3765 }
2247} 3766}
2248 3767
2249void 3768int
2250ev_loop (EV_P_ int flags) 3769ev_run (EV_P_ int flags)
2251{ 3770{
2252#if EV_MINIMAL < 2 3771#if EV_FEATURE_API
2253 ++loop_depth; 3772 ++loop_depth;
2254#endif 3773#endif
2255 3774
2256 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));
2257 3776
2258 loop_done = EVUNLOOP_CANCEL; 3777 loop_done = EVBREAK_CANCEL;
2259 3778
2260 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 */
2261 3780
2262 do 3781 do
2263 { 3782 {
2264#if EV_VERIFY >= 2 3783#if EV_VERIFY >= 2
2265 ev_loop_verify (EV_A); 3784 ev_verify (EV_A);
2266#endif 3785#endif
2267 3786
2268#ifndef _WIN32 3787#ifndef _WIN32
2269 if (expect_false (curpid)) /* penalise the forking check even more */ 3788 if (ecb_expect_false (curpid)) /* penalise the forking check even more */
2270 if (expect_false (getpid () != curpid)) 3789 if (ecb_expect_false (getpid () != curpid))
2271 { 3790 {
2272 curpid = getpid (); 3791 curpid = getpid ();
2273 postfork = 1; 3792 postfork = 1;
2274 } 3793 }
2275#endif 3794#endif
2276 3795
2277#if EV_FORK_ENABLE 3796#if EV_FORK_ENABLE
2278 /* we might have forked, so queue fork handlers */ 3797 /* we might have forked, so queue fork handlers */
2279 if (expect_false (postfork)) 3798 if (ecb_expect_false (postfork))
2280 if (forkcnt) 3799 if (forkcnt)
2281 { 3800 {
2282 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3801 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2283 EV_INVOKE_PENDING; 3802 EV_INVOKE_PENDING;
2284 } 3803 }
2285#endif 3804#endif
2286 3805
3806#if EV_PREPARE_ENABLE
2287 /* queue prepare watchers (and execute them) */ 3807 /* queue prepare watchers (and execute them) */
2288 if (expect_false (preparecnt)) 3808 if (ecb_expect_false (preparecnt))
2289 { 3809 {
2290 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3810 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2291 EV_INVOKE_PENDING; 3811 EV_INVOKE_PENDING;
2292 } 3812 }
3813#endif
2293 3814
2294 if (expect_false (loop_done)) 3815 if (ecb_expect_false (loop_done))
2295 break; 3816 break;
2296 3817
2297 /* we might have forked, so reify kernel state if necessary */ 3818 /* we might have forked, so reify kernel state if necessary */
2298 if (expect_false (postfork)) 3819 if (ecb_expect_false (postfork))
2299 loop_fork (EV_A); 3820 loop_fork (EV_A);
2300 3821
2301 /* update fd-related kernel structures */ 3822 /* update fd-related kernel structures */
2302 fd_reify (EV_A); 3823 fd_reify (EV_A);
2303 3824
2304 /* calculate blocking time */ 3825 /* calculate blocking time */
2305 { 3826 {
2306 ev_tstamp waittime = 0.; 3827 ev_tstamp waittime = 0.;
2307 ev_tstamp sleeptime = 0.; 3828 ev_tstamp sleeptime = 0.;
2308 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
2309 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3841 if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2310 { 3842 {
2311 /* remember old timestamp for io_blocktime calculation */
2312 ev_tstamp prev_mn_now = mn_now;
2313
2314 /* update time to cancel out callback processing overhead */
2315 time_update (EV_A_ 1e100);
2316
2317 waittime = MAX_BLOCKTIME; 3843 waittime = EV_TS_CONST (MAX_BLOCKTIME);
2318 3844
2319 if (timercnt) 3845 if (timercnt)
2320 { 3846 {
2321 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3847 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2322 if (waittime > to) waittime = to; 3848 if (waittime > to) waittime = to;
2323 } 3849 }
2324 3850
2325#if EV_PERIODIC_ENABLE 3851#if EV_PERIODIC_ENABLE
2326 if (periodiccnt) 3852 if (periodiccnt)
2327 { 3853 {
2328 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3854 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2329 if (waittime > to) waittime = to; 3855 if (waittime > to) waittime = to;
2330 } 3856 }
2331#endif 3857#endif
2332 3858
2333 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3859 /* don't let timeouts decrease the waittime below timeout_blocktime */
2334 if (expect_false (waittime < timeout_blocktime)) 3860 if (ecb_expect_false (waittime < timeout_blocktime))
2335 waittime = timeout_blocktime; 3861 waittime = timeout_blocktime;
2336 3862
3863 /* now there are two more special cases left, either we have
3864 * already-expired timers, so we should not sleep, or we have timers
3865 * that expire very soon, in which case we need to wait for a minimum
3866 * amount of time for some event loop backends.
3867 */
3868 if (ecb_expect_false (waittime < backend_mintime))
3869 waittime = waittime <= EV_TS_CONST (0.)
3870 ? EV_TS_CONST (0.)
3871 : backend_mintime;
3872
2337 /* extra check because io_blocktime is commonly 0 */ 3873 /* extra check because io_blocktime is commonly 0 */
2338 if (expect_false (io_blocktime)) 3874 if (ecb_expect_false (io_blocktime))
2339 { 3875 {
2340 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3876 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2341 3877
2342 if (sleeptime > waittime - backend_fudge) 3878 if (sleeptime > waittime - backend_mintime)
2343 sleeptime = waittime - backend_fudge; 3879 sleeptime = waittime - backend_mintime;
2344 3880
2345 if (expect_true (sleeptime > 0.)) 3881 if (ecb_expect_true (sleeptime > EV_TS_CONST (0.)))
2346 { 3882 {
2347 ev_sleep (sleeptime); 3883 ev_sleep (sleeptime);
2348 waittime -= sleeptime; 3884 waittime -= sleeptime;
2349 } 3885 }
2350 } 3886 }
2351 } 3887 }
2352 3888
2353#if EV_MINIMAL < 2 3889#if EV_FEATURE_API
2354 ++loop_count; 3890 ++loop_count;
2355#endif 3891#endif
2356 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3892 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2357 backend_poll (EV_A_ waittime); 3893 backend_poll (EV_A_ waittime);
2358 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 3894 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3895
3896 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3897
3898 ECB_MEMORY_FENCE_ACQUIRE;
3899 if (pipe_write_skipped)
3900 {
3901 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3902 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3903 }
2359 3904
2360 /* update ev_rt_now, do magic */ 3905 /* update ev_rt_now, do magic */
2361 time_update (EV_A_ waittime + sleeptime); 3906 time_update (EV_A_ waittime + sleeptime);
2362 } 3907 }
2363 3908
… …
2370#if EV_IDLE_ENABLE 3915#if EV_IDLE_ENABLE
2371 /* queue idle watchers unless other events are pending */ 3916 /* queue idle watchers unless other events are pending */
2372 idle_reify (EV_A); 3917 idle_reify (EV_A);
2373#endif 3918#endif
2374 3919
3920#if EV_CHECK_ENABLE
2375 /* queue check watchers, to be executed first */ 3921 /* queue check watchers, to be executed first */
2376 if (expect_false (checkcnt)) 3922 if (ecb_expect_false (checkcnt))
2377 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3923 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3924#endif
2378 3925
2379 EV_INVOKE_PENDING; 3926 EV_INVOKE_PENDING;
2380 } 3927 }
2381 while (expect_true ( 3928 while (ecb_expect_true (
2382 activecnt 3929 activecnt
2383 && !loop_done 3930 && !loop_done
2384 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3931 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2385 )); 3932 ));
2386 3933
2387 if (loop_done == EVUNLOOP_ONE) 3934 if (loop_done == EVBREAK_ONE)
2388 loop_done = EVUNLOOP_CANCEL; 3935 loop_done = EVBREAK_CANCEL;
2389 3936
2390#if EV_MINIMAL < 2 3937#if EV_FEATURE_API
2391 --loop_depth; 3938 --loop_depth;
2392#endif 3939#endif
2393}
2394 3940
3941 return activecnt;
3942}
3943
2395void 3944void
2396ev_unloop (EV_P_ int how) 3945ev_break (EV_P_ int how) EV_NOEXCEPT
2397{ 3946{
2398 loop_done = how; 3947 loop_done = how;
2399} 3948}
2400 3949
2401void 3950void
2402ev_ref (EV_P) 3951ev_ref (EV_P) EV_NOEXCEPT
2403{ 3952{
2404 ++activecnt; 3953 ++activecnt;
2405} 3954}
2406 3955
2407void 3956void
2408ev_unref (EV_P) 3957ev_unref (EV_P) EV_NOEXCEPT
2409{ 3958{
2410 --activecnt; 3959 --activecnt;
2411} 3960}
2412 3961
2413void 3962void
2414ev_now_update (EV_P) 3963ev_now_update (EV_P) EV_NOEXCEPT
2415{ 3964{
2416 time_update (EV_A_ 1e100); 3965 time_update (EV_A_ EV_TSTAMP_HUGE);
2417} 3966}
2418 3967
2419void 3968void
2420ev_suspend (EV_P) 3969ev_suspend (EV_P) EV_NOEXCEPT
2421{ 3970{
2422 ev_now_update (EV_A); 3971 ev_now_update (EV_A);
2423} 3972}
2424 3973
2425void 3974void
2426ev_resume (EV_P) 3975ev_resume (EV_P) EV_NOEXCEPT
2427{ 3976{
2428 ev_tstamp mn_prev = mn_now; 3977 ev_tstamp mn_prev = mn_now;
2429 3978
2430 ev_now_update (EV_A); 3979 ev_now_update (EV_A);
2431 timers_reschedule (EV_A_ mn_now - mn_prev); 3980 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2448inline_size void 3997inline_size void
2449wlist_del (WL *head, WL elem) 3998wlist_del (WL *head, WL elem)
2450{ 3999{
2451 while (*head) 4000 while (*head)
2452 { 4001 {
2453 if (expect_true (*head == elem)) 4002 if (ecb_expect_true (*head == elem))
2454 { 4003 {
2455 *head = elem->next; 4004 *head = elem->next;
2456 break; 4005 break;
2457 } 4006 }
2458 4007
… …
2470 w->pending = 0; 4019 w->pending = 0;
2471 } 4020 }
2472} 4021}
2473 4022
2474int 4023int
2475ev_clear_pending (EV_P_ void *w) 4024ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
2476{ 4025{
2477 W w_ = (W)w; 4026 W w_ = (W)w;
2478 int pending = w_->pending; 4027 int pending = w_->pending;
2479 4028
2480 if (expect_true (pending)) 4029 if (ecb_expect_true (pending))
2481 { 4030 {
2482 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 4031 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2483 p->w = (W)&pending_w; 4032 p->w = (W)&pending_w;
2484 w_->pending = 0; 4033 w_->pending = 0;
2485 return p->events; 4034 return p->events;
… …
2512 w->active = 0; 4061 w->active = 0;
2513} 4062}
2514 4063
2515/*****************************************************************************/ 4064/*****************************************************************************/
2516 4065
2517void noinline 4066ecb_noinline
4067void
2518ev_io_start (EV_P_ ev_io *w) 4068ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
2519{ 4069{
2520 int fd = w->fd; 4070 int fd = w->fd;
2521 4071
2522 if (expect_false (ev_is_active (w))) 4072 if (ecb_expect_false (ev_is_active (w)))
2523 return; 4073 return;
2524 4074
2525 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 4075 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2526 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 4076 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2527 4077
4078#if EV_VERIFY >= 2
4079 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
4080#endif
2528 EV_FREQUENT_CHECK; 4081 EV_FREQUENT_CHECK;
2529 4082
2530 ev_start (EV_A_ (W)w, 1); 4083 ev_start (EV_A_ (W)w, 1);
2531 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 4084 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
2532 wlist_add (&anfds[fd].head, (WL)w); 4085 wlist_add (&anfds[fd].head, (WL)w);
4086
4087 /* common bug, apparently */
4088 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
2533 4089
2534 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 4090 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2535 w->events &= ~EV__IOFDSET; 4091 w->events &= ~EV__IOFDSET;
2536 4092
2537 EV_FREQUENT_CHECK; 4093 EV_FREQUENT_CHECK;
2538} 4094}
2539 4095
2540void noinline 4096ecb_noinline
4097void
2541ev_io_stop (EV_P_ ev_io *w) 4098ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
2542{ 4099{
2543 clear_pending (EV_A_ (W)w); 4100 clear_pending (EV_A_ (W)w);
2544 if (expect_false (!ev_is_active (w))) 4101 if (ecb_expect_false (!ev_is_active (w)))
2545 return; 4102 return;
2546 4103
2547 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 4104 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2548 4105
4106#if EV_VERIFY >= 2
4107 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
4108#endif
2549 EV_FREQUENT_CHECK; 4109 EV_FREQUENT_CHECK;
2550 4110
2551 wlist_del (&anfds[w->fd].head, (WL)w); 4111 wlist_del (&anfds[w->fd].head, (WL)w);
2552 ev_stop (EV_A_ (W)w); 4112 ev_stop (EV_A_ (W)w);
2553 4113
2554 fd_change (EV_A_ w->fd, 1); 4114 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2555 4115
2556 EV_FREQUENT_CHECK; 4116 EV_FREQUENT_CHECK;
2557} 4117}
2558 4118
2559void noinline 4119ecb_noinline
4120void
2560ev_timer_start (EV_P_ ev_timer *w) 4121ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
2561{ 4122{
2562 if (expect_false (ev_is_active (w))) 4123 if (ecb_expect_false (ev_is_active (w)))
2563 return; 4124 return;
2564 4125
2565 ev_at (w) += mn_now; 4126 ev_at (w) += mn_now;
2566 4127
2567 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 4128 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2568 4129
2569 EV_FREQUENT_CHECK; 4130 EV_FREQUENT_CHECK;
2570 4131
2571 ++timercnt; 4132 ++timercnt;
2572 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 4133 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
2573 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 4134 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
2574 ANHE_w (timers [ev_active (w)]) = (WT)w; 4135 ANHE_w (timers [ev_active (w)]) = (WT)w;
2575 ANHE_at_cache (timers [ev_active (w)]); 4136 ANHE_at_cache (timers [ev_active (w)]);
2576 upheap (timers, ev_active (w)); 4137 upheap (timers, ev_active (w));
2577 4138
2578 EV_FREQUENT_CHECK; 4139 EV_FREQUENT_CHECK;
2579 4140
2580 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 4141 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2581} 4142}
2582 4143
2583void noinline 4144ecb_noinline
4145void
2584ev_timer_stop (EV_P_ ev_timer *w) 4146ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
2585{ 4147{
2586 clear_pending (EV_A_ (W)w); 4148 clear_pending (EV_A_ (W)w);
2587 if (expect_false (!ev_is_active (w))) 4149 if (ecb_expect_false (!ev_is_active (w)))
2588 return; 4150 return;
2589 4151
2590 EV_FREQUENT_CHECK; 4152 EV_FREQUENT_CHECK;
2591 4153
2592 { 4154 {
… …
2594 4156
2595 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 4157 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2596 4158
2597 --timercnt; 4159 --timercnt;
2598 4160
2599 if (expect_true (active < timercnt + HEAP0)) 4161 if (ecb_expect_true (active < timercnt + HEAP0))
2600 { 4162 {
2601 timers [active] = timers [timercnt + HEAP0]; 4163 timers [active] = timers [timercnt + HEAP0];
2602 adjustheap (timers, timercnt, active); 4164 adjustheap (timers, timercnt, active);
2603 } 4165 }
2604 } 4166 }
… …
2608 ev_stop (EV_A_ (W)w); 4170 ev_stop (EV_A_ (W)w);
2609 4171
2610 EV_FREQUENT_CHECK; 4172 EV_FREQUENT_CHECK;
2611} 4173}
2612 4174
2613void noinline 4175ecb_noinline
4176void
2614ev_timer_again (EV_P_ ev_timer *w) 4177ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
2615{ 4178{
2616 EV_FREQUENT_CHECK; 4179 EV_FREQUENT_CHECK;
4180
4181 clear_pending (EV_A_ (W)w);
2617 4182
2618 if (ev_is_active (w)) 4183 if (ev_is_active (w))
2619 { 4184 {
2620 if (w->repeat) 4185 if (w->repeat)
2621 { 4186 {
… …
2634 4199
2635 EV_FREQUENT_CHECK; 4200 EV_FREQUENT_CHECK;
2636} 4201}
2637 4202
2638ev_tstamp 4203ev_tstamp
2639ev_timer_remaining (EV_P_ ev_timer *w) 4204ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
2640{ 4205{
2641 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4206 return ev_at (w) - (ev_is_active (w) ? mn_now : EV_TS_CONST (0.));
2642} 4207}
2643 4208
2644#if EV_PERIODIC_ENABLE 4209#if EV_PERIODIC_ENABLE
2645void noinline 4210ecb_noinline
4211void
2646ev_periodic_start (EV_P_ ev_periodic *w) 4212ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
2647{ 4213{
2648 if (expect_false (ev_is_active (w))) 4214 if (ecb_expect_false (ev_is_active (w)))
2649 return; 4215 return;
2650 4216
2651 if (w->reschedule_cb) 4217 if (w->reschedule_cb)
2652 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4218 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2653 else if (w->interval) 4219 else if (w->interval)
2654 { 4220 {
2655 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 4221 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2656 /* this formula differs from the one in periodic_reify because we do not always round up */ 4222 periodic_recalc (EV_A_ w);
2657 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2658 } 4223 }
2659 else 4224 else
2660 ev_at (w) = w->offset; 4225 ev_at (w) = w->offset;
2661 4226
2662 EV_FREQUENT_CHECK; 4227 EV_FREQUENT_CHECK;
2663 4228
2664 ++periodiccnt; 4229 ++periodiccnt;
2665 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4230 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2666 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4231 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
2667 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4232 ANHE_w (periodics [ev_active (w)]) = (WT)w;
2668 ANHE_at_cache (periodics [ev_active (w)]); 4233 ANHE_at_cache (periodics [ev_active (w)]);
2669 upheap (periodics, ev_active (w)); 4234 upheap (periodics, ev_active (w));
2670 4235
2671 EV_FREQUENT_CHECK; 4236 EV_FREQUENT_CHECK;
2672 4237
2673 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4238 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2674} 4239}
2675 4240
2676void noinline 4241ecb_noinline
4242void
2677ev_periodic_stop (EV_P_ ev_periodic *w) 4243ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
2678{ 4244{
2679 clear_pending (EV_A_ (W)w); 4245 clear_pending (EV_A_ (W)w);
2680 if (expect_false (!ev_is_active (w))) 4246 if (ecb_expect_false (!ev_is_active (w)))
2681 return; 4247 return;
2682 4248
2683 EV_FREQUENT_CHECK; 4249 EV_FREQUENT_CHECK;
2684 4250
2685 { 4251 {
… …
2687 4253
2688 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 4254 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2689 4255
2690 --periodiccnt; 4256 --periodiccnt;
2691 4257
2692 if (expect_true (active < periodiccnt + HEAP0)) 4258 if (ecb_expect_true (active < periodiccnt + HEAP0))
2693 { 4259 {
2694 periodics [active] = periodics [periodiccnt + HEAP0]; 4260 periodics [active] = periodics [periodiccnt + HEAP0];
2695 adjustheap (periodics, periodiccnt, active); 4261 adjustheap (periodics, periodiccnt, active);
2696 } 4262 }
2697 } 4263 }
… …
2699 ev_stop (EV_A_ (W)w); 4265 ev_stop (EV_A_ (W)w);
2700 4266
2701 EV_FREQUENT_CHECK; 4267 EV_FREQUENT_CHECK;
2702} 4268}
2703 4269
2704void noinline 4270ecb_noinline
4271void
2705ev_periodic_again (EV_P_ ev_periodic *w) 4272ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
2706{ 4273{
2707 /* TODO: use adjustheap and recalculation */ 4274 /* TODO: use adjustheap and recalculation */
2708 ev_periodic_stop (EV_A_ w); 4275 ev_periodic_stop (EV_A_ w);
2709 ev_periodic_start (EV_A_ w); 4276 ev_periodic_start (EV_A_ w);
2710} 4277}
… …
2712 4279
2713#ifndef SA_RESTART 4280#ifndef SA_RESTART
2714# define SA_RESTART 0 4281# define SA_RESTART 0
2715#endif 4282#endif
2716 4283
2717void noinline 4284#if EV_SIGNAL_ENABLE
4285
4286ecb_noinline
4287void
2718ev_signal_start (EV_P_ ev_signal *w) 4288ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
2719{ 4289{
2720 if (expect_false (ev_is_active (w))) 4290 if (ecb_expect_false (ev_is_active (w)))
2721 return; 4291 return;
2722 4292
2723 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4293 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2724 4294
2725#if EV_MULTIPLICITY 4295#if EV_MULTIPLICITY
2726 assert (("libev: a signal must not be attached to two different loops", 4296 assert (("libev: a signal must not be attached to two different loops",
2727 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4297 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2728 4298
2729 signals [w->signum - 1].loop = EV_A; 4299 signals [w->signum - 1].loop = EV_A;
4300 ECB_MEMORY_FENCE_RELEASE;
2730#endif 4301#endif
2731 4302
2732 EV_FREQUENT_CHECK; 4303 EV_FREQUENT_CHECK;
2733 4304
2734#if EV_USE_SIGNALFD 4305#if EV_USE_SIGNALFD
… …
2781 sa.sa_handler = ev_sighandler; 4352 sa.sa_handler = ev_sighandler;
2782 sigfillset (&sa.sa_mask); 4353 sigfillset (&sa.sa_mask);
2783 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 4354 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2784 sigaction (w->signum, &sa, 0); 4355 sigaction (w->signum, &sa, 0);
2785 4356
4357 if (origflags & EVFLAG_NOSIGMASK)
4358 {
2786 sigemptyset (&sa.sa_mask); 4359 sigemptyset (&sa.sa_mask);
2787 sigaddset (&sa.sa_mask, w->signum); 4360 sigaddset (&sa.sa_mask, w->signum);
2788 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 4361 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
4362 }
2789#endif 4363#endif
2790 } 4364 }
2791 4365
2792 EV_FREQUENT_CHECK; 4366 EV_FREQUENT_CHECK;
2793} 4367}
2794 4368
2795void noinline 4369ecb_noinline
4370void
2796ev_signal_stop (EV_P_ ev_signal *w) 4371ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
2797{ 4372{
2798 clear_pending (EV_A_ (W)w); 4373 clear_pending (EV_A_ (W)w);
2799 if (expect_false (!ev_is_active (w))) 4374 if (ecb_expect_false (!ev_is_active (w)))
2800 return; 4375 return;
2801 4376
2802 EV_FREQUENT_CHECK; 4377 EV_FREQUENT_CHECK;
2803 4378
2804 wlist_del (&signals [w->signum - 1].head, (WL)w); 4379 wlist_del (&signals [w->signum - 1].head, (WL)w);
… …
2827 } 4402 }
2828 4403
2829 EV_FREQUENT_CHECK; 4404 EV_FREQUENT_CHECK;
2830} 4405}
2831 4406
4407#endif
4408
4409#if EV_CHILD_ENABLE
4410
2832void 4411void
2833ev_child_start (EV_P_ ev_child *w) 4412ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
2834{ 4413{
2835#if EV_MULTIPLICITY 4414#if EV_MULTIPLICITY
2836 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4415 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2837#endif 4416#endif
2838 if (expect_false (ev_is_active (w))) 4417 if (ecb_expect_false (ev_is_active (w)))
2839 return; 4418 return;
2840 4419
2841 EV_FREQUENT_CHECK; 4420 EV_FREQUENT_CHECK;
2842 4421
2843 ev_start (EV_A_ (W)w, 1); 4422 ev_start (EV_A_ (W)w, 1);
2844 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4423 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2845 4424
2846 EV_FREQUENT_CHECK; 4425 EV_FREQUENT_CHECK;
2847} 4426}
2848 4427
2849void 4428void
2850ev_child_stop (EV_P_ ev_child *w) 4429ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
2851{ 4430{
2852 clear_pending (EV_A_ (W)w); 4431 clear_pending (EV_A_ (W)w);
2853 if (expect_false (!ev_is_active (w))) 4432 if (ecb_expect_false (!ev_is_active (w)))
2854 return; 4433 return;
2855 4434
2856 EV_FREQUENT_CHECK; 4435 EV_FREQUENT_CHECK;
2857 4436
2858 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4437 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2859 ev_stop (EV_A_ (W)w); 4438 ev_stop (EV_A_ (W)w);
2860 4439
2861 EV_FREQUENT_CHECK; 4440 EV_FREQUENT_CHECK;
2862} 4441}
4442
4443#endif
2863 4444
2864#if EV_STAT_ENABLE 4445#if EV_STAT_ENABLE
2865 4446
2866# ifdef _WIN32 4447# ifdef _WIN32
2867# undef lstat 4448# undef lstat
… …
2870 4451
2871#define DEF_STAT_INTERVAL 5.0074891 4452#define DEF_STAT_INTERVAL 5.0074891
2872#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4453#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2873#define MIN_STAT_INTERVAL 0.1074891 4454#define MIN_STAT_INTERVAL 0.1074891
2874 4455
2875static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4456ecb_noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2876 4457
2877#if EV_USE_INOTIFY 4458#if EV_USE_INOTIFY
2878 4459
2879/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ 4460/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
2880# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4461# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2881 4462
2882static void noinline 4463ecb_noinline
4464static void
2883infy_add (EV_P_ ev_stat *w) 4465infy_add (EV_P_ ev_stat *w)
2884{ 4466{
2885 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); 4467 w->wd = inotify_add_watch (fs_fd, w->path,
4468 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4469 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4470 | IN_DONT_FOLLOW | IN_MASK_ADD);
2886 4471
2887 if (w->wd >= 0) 4472 if (w->wd >= 0)
2888 { 4473 {
2889 struct statfs sfs; 4474 struct statfs sfs;
2890 4475
… …
2894 4479
2895 if (!fs_2625) 4480 if (!fs_2625)
2896 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4481 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2897 else if (!statfs (w->path, &sfs) 4482 else if (!statfs (w->path, &sfs)
2898 && (sfs.f_type == 0x1373 /* devfs */ 4483 && (sfs.f_type == 0x1373 /* devfs */
4484 || sfs.f_type == 0x4006 /* fat */
4485 || sfs.f_type == 0x4d44 /* msdos */
2899 || sfs.f_type == 0xEF53 /* ext2/3 */ 4486 || sfs.f_type == 0xEF53 /* ext2/3 */
4487 || sfs.f_type == 0x72b6 /* jffs2 */
4488 || sfs.f_type == 0x858458f6 /* ramfs */
4489 || sfs.f_type == 0x5346544e /* ntfs */
2900 || sfs.f_type == 0x3153464a /* jfs */ 4490 || sfs.f_type == 0x3153464a /* jfs */
4491 || sfs.f_type == 0x9123683e /* btrfs */
2901 || sfs.f_type == 0x52654973 /* reiser3 */ 4492 || sfs.f_type == 0x52654973 /* reiser3 */
2902 || sfs.f_type == 0x01021994 /* tempfs */ 4493 || sfs.f_type == 0x01021994 /* tmpfs */
2903 || sfs.f_type == 0x58465342 /* xfs */)) 4494 || sfs.f_type == 0x58465342 /* xfs */))
2904 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4495 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
2905 else 4496 else
2906 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4497 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2907 } 4498 }
… …
2928 if (!pend || pend == path) 4519 if (!pend || pend == path)
2929 break; 4520 break;
2930 4521
2931 *pend = 0; 4522 *pend = 0;
2932 w->wd = inotify_add_watch (fs_fd, path, mask); 4523 w->wd = inotify_add_watch (fs_fd, path, mask);
2933 } 4524 }
2934 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 4525 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2935 } 4526 }
2936 } 4527 }
2937 4528
2938 if (w->wd >= 0) 4529 if (w->wd >= 0)
2939 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4530 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2940 4531
2941 /* now re-arm timer, if required */ 4532 /* now re-arm timer, if required */
2942 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4533 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2943 ev_timer_again (EV_A_ &w->timer); 4534 ev_timer_again (EV_A_ &w->timer);
2944 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4535 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2945} 4536}
2946 4537
2947static void noinline 4538ecb_noinline
4539static void
2948infy_del (EV_P_ ev_stat *w) 4540infy_del (EV_P_ ev_stat *w)
2949{ 4541{
2950 int slot; 4542 int slot;
2951 int wd = w->wd; 4543 int wd = w->wd;
2952 4544
2953 if (wd < 0) 4545 if (wd < 0)
2954 return; 4546 return;
2955 4547
2956 w->wd = -2; 4548 w->wd = -2;
2957 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 4549 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2958 wlist_del (&fs_hash [slot].head, (WL)w); 4550 wlist_del (&fs_hash [slot].head, (WL)w);
2959 4551
2960 /* remove this watcher, if others are watching it, they will rearm */ 4552 /* remove this watcher, if others are watching it, they will rearm */
2961 inotify_rm_watch (fs_fd, wd); 4553 inotify_rm_watch (fs_fd, wd);
2962} 4554}
2963 4555
2964static void noinline 4556ecb_noinline
4557static void
2965infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4558infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2966{ 4559{
2967 if (slot < 0) 4560 if (slot < 0)
2968 /* overflow, need to check for all hash slots */ 4561 /* overflow, need to check for all hash slots */
2969 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4562 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2970 infy_wd (EV_A_ slot, wd, ev); 4563 infy_wd (EV_A_ slot, wd, ev);
2971 else 4564 else
2972 { 4565 {
2973 WL w_; 4566 WL w_;
2974 4567
2975 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 4568 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2976 { 4569 {
2977 ev_stat *w = (ev_stat *)w_; 4570 ev_stat *w = (ev_stat *)w_;
2978 w_ = w_->next; /* lets us remove this watcher and all before it */ 4571 w_ = w_->next; /* lets us remove this watcher and all before it */
2979 4572
2980 if (w->wd == wd || wd == -1) 4573 if (w->wd == wd || wd == -1)
2981 { 4574 {
2982 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 4575 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2983 { 4576 {
2984 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4577 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2985 w->wd = -1; 4578 w->wd = -1;
2986 infy_add (EV_A_ w); /* re-add, no matter what */ 4579 infy_add (EV_A_ w); /* re-add, no matter what */
2987 } 4580 }
2988 4581
2989 stat_timer_cb (EV_A_ &w->timer, 0); 4582 stat_timer_cb (EV_A_ &w->timer, 0);
… …
3005 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4598 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3006 ofs += sizeof (struct inotify_event) + ev->len; 4599 ofs += sizeof (struct inotify_event) + ev->len;
3007 } 4600 }
3008} 4601}
3009 4602
3010inline_size unsigned int
3011ev_linux_version (void)
3012{
3013 struct utsname buf;
3014 unsigned int v;
3015 int i;
3016 char *p = buf.release;
3017
3018 if (uname (&buf))
3019 return 0;
3020
3021 for (i = 3+1; --i; )
3022 {
3023 unsigned int c = 0;
3024
3025 for (;;)
3026 {
3027 if (*p >= '0' && *p <= '9')
3028 c = c * 10 + *p++ - '0';
3029 else
3030 {
3031 p += *p == '.';
3032 break;
3033 }
3034 }
3035
3036 v = (v << 8) | c;
3037 }
3038
3039 return v;
3040}
3041
3042inline_size void 4603inline_size ecb_cold
4604void
3043ev_check_2625 (EV_P) 4605ev_check_2625 (EV_P)
3044{ 4606{
3045 /* kernels < 2.6.25 are borked 4607 /* kernels < 2.6.25 are borked
3046 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4608 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3047 */ 4609 */
… …
3052} 4614}
3053 4615
3054inline_size int 4616inline_size int
3055infy_newfd (void) 4617infy_newfd (void)
3056{ 4618{
3057#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4619#if defined IN_CLOEXEC && defined IN_NONBLOCK
3058 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4620 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3059 if (fd >= 0) 4621 if (fd >= 0)
3060 return fd; 4622 return fd;
3061#endif 4623#endif
3062 return inotify_init (); 4624 return inotify_init ();
… …
3103 ev_io_set (&fs_w, fs_fd, EV_READ); 4665 ev_io_set (&fs_w, fs_fd, EV_READ);
3104 ev_io_start (EV_A_ &fs_w); 4666 ev_io_start (EV_A_ &fs_w);
3105 ev_unref (EV_A); 4667 ev_unref (EV_A);
3106 } 4668 }
3107 4669
3108 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4670 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
3109 { 4671 {
3110 WL w_ = fs_hash [slot].head; 4672 WL w_ = fs_hash [slot].head;
3111 fs_hash [slot].head = 0; 4673 fs_hash [slot].head = 0;
3112 4674
3113 while (w_) 4675 while (w_)
… …
3137#else 4699#else
3138# define EV_LSTAT(p,b) lstat (p, b) 4700# define EV_LSTAT(p,b) lstat (p, b)
3139#endif 4701#endif
3140 4702
3141void 4703void
3142ev_stat_stat (EV_P_ ev_stat *w) 4704ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
3143{ 4705{
3144 if (lstat (w->path, &w->attr) < 0) 4706 if (lstat (w->path, &w->attr) < 0)
3145 w->attr.st_nlink = 0; 4707 w->attr.st_nlink = 0;
3146 else if (!w->attr.st_nlink) 4708 else if (!w->attr.st_nlink)
3147 w->attr.st_nlink = 1; 4709 w->attr.st_nlink = 1;
3148} 4710}
3149 4711
3150static void noinline 4712ecb_noinline
4713static void
3151stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4714stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3152{ 4715{
3153 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4716 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3154 4717
3155 ev_statdata prev = w->attr; 4718 ev_statdata prev = w->attr;
… …
3186 ev_feed_event (EV_A_ w, EV_STAT); 4749 ev_feed_event (EV_A_ w, EV_STAT);
3187 } 4750 }
3188} 4751}
3189 4752
3190void 4753void
3191ev_stat_start (EV_P_ ev_stat *w) 4754ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
3192{ 4755{
3193 if (expect_false (ev_is_active (w))) 4756 if (ecb_expect_false (ev_is_active (w)))
3194 return; 4757 return;
3195 4758
3196 ev_stat_stat (EV_A_ w); 4759 ev_stat_stat (EV_A_ w);
3197 4760
3198 if (w->interval < MIN_STAT_INTERVAL && w->interval) 4761 if (w->interval < MIN_STAT_INTERVAL && w->interval)
… …
3217 4780
3218 EV_FREQUENT_CHECK; 4781 EV_FREQUENT_CHECK;
3219} 4782}
3220 4783
3221void 4784void
3222ev_stat_stop (EV_P_ ev_stat *w) 4785ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
3223{ 4786{
3224 clear_pending (EV_A_ (W)w); 4787 clear_pending (EV_A_ (W)w);
3225 if (expect_false (!ev_is_active (w))) 4788 if (ecb_expect_false (!ev_is_active (w)))
3226 return; 4789 return;
3227 4790
3228 EV_FREQUENT_CHECK; 4791 EV_FREQUENT_CHECK;
3229 4792
3230#if EV_USE_INOTIFY 4793#if EV_USE_INOTIFY
… …
3243} 4806}
3244#endif 4807#endif
3245 4808
3246#if EV_IDLE_ENABLE 4809#if EV_IDLE_ENABLE
3247void 4810void
3248ev_idle_start (EV_P_ ev_idle *w) 4811ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
3249{ 4812{
3250 if (expect_false (ev_is_active (w))) 4813 if (ecb_expect_false (ev_is_active (w)))
3251 return; 4814 return;
3252 4815
3253 pri_adjust (EV_A_ (W)w); 4816 pri_adjust (EV_A_ (W)w);
3254 4817
3255 EV_FREQUENT_CHECK; 4818 EV_FREQUENT_CHECK;
… …
3258 int active = ++idlecnt [ABSPRI (w)]; 4821 int active = ++idlecnt [ABSPRI (w)];
3259 4822
3260 ++idleall; 4823 ++idleall;
3261 ev_start (EV_A_ (W)w, active); 4824 ev_start (EV_A_ (W)w, active);
3262 4825
3263 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 4826 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
3264 idles [ABSPRI (w)][active - 1] = w; 4827 idles [ABSPRI (w)][active - 1] = w;
3265 } 4828 }
3266 4829
3267 EV_FREQUENT_CHECK; 4830 EV_FREQUENT_CHECK;
3268} 4831}
3269 4832
3270void 4833void
3271ev_idle_stop (EV_P_ ev_idle *w) 4834ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
3272{ 4835{
3273 clear_pending (EV_A_ (W)w); 4836 clear_pending (EV_A_ (W)w);
3274 if (expect_false (!ev_is_active (w))) 4837 if (ecb_expect_false (!ev_is_active (w)))
3275 return; 4838 return;
3276 4839
3277 EV_FREQUENT_CHECK; 4840 EV_FREQUENT_CHECK;
3278 4841
3279 { 4842 {
… …
3288 4851
3289 EV_FREQUENT_CHECK; 4852 EV_FREQUENT_CHECK;
3290} 4853}
3291#endif 4854#endif
3292 4855
4856#if EV_PREPARE_ENABLE
3293void 4857void
3294ev_prepare_start (EV_P_ ev_prepare *w) 4858ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
3295{ 4859{
3296 if (expect_false (ev_is_active (w))) 4860 if (ecb_expect_false (ev_is_active (w)))
3297 return; 4861 return;
3298 4862
3299 EV_FREQUENT_CHECK; 4863 EV_FREQUENT_CHECK;
3300 4864
3301 ev_start (EV_A_ (W)w, ++preparecnt); 4865 ev_start (EV_A_ (W)w, ++preparecnt);
3302 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4866 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
3303 prepares [preparecnt - 1] = w; 4867 prepares [preparecnt - 1] = w;
3304 4868
3305 EV_FREQUENT_CHECK; 4869 EV_FREQUENT_CHECK;
3306} 4870}
3307 4871
3308void 4872void
3309ev_prepare_stop (EV_P_ ev_prepare *w) 4873ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
3310{ 4874{
3311 clear_pending (EV_A_ (W)w); 4875 clear_pending (EV_A_ (W)w);
3312 if (expect_false (!ev_is_active (w))) 4876 if (ecb_expect_false (!ev_is_active (w)))
3313 return; 4877 return;
3314 4878
3315 EV_FREQUENT_CHECK; 4879 EV_FREQUENT_CHECK;
3316 4880
3317 { 4881 {
… …
3323 4887
3324 ev_stop (EV_A_ (W)w); 4888 ev_stop (EV_A_ (W)w);
3325 4889
3326 EV_FREQUENT_CHECK; 4890 EV_FREQUENT_CHECK;
3327} 4891}
4892#endif
3328 4893
4894#if EV_CHECK_ENABLE
3329void 4895void
3330ev_check_start (EV_P_ ev_check *w) 4896ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
3331{ 4897{
3332 if (expect_false (ev_is_active (w))) 4898 if (ecb_expect_false (ev_is_active (w)))
3333 return; 4899 return;
3334 4900
3335 EV_FREQUENT_CHECK; 4901 EV_FREQUENT_CHECK;
3336 4902
3337 ev_start (EV_A_ (W)w, ++checkcnt); 4903 ev_start (EV_A_ (W)w, ++checkcnt);
3338 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 4904 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
3339 checks [checkcnt - 1] = w; 4905 checks [checkcnt - 1] = w;
3340 4906
3341 EV_FREQUENT_CHECK; 4907 EV_FREQUENT_CHECK;
3342} 4908}
3343 4909
3344void 4910void
3345ev_check_stop (EV_P_ ev_check *w) 4911ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
3346{ 4912{
3347 clear_pending (EV_A_ (W)w); 4913 clear_pending (EV_A_ (W)w);
3348 if (expect_false (!ev_is_active (w))) 4914 if (ecb_expect_false (!ev_is_active (w)))
3349 return; 4915 return;
3350 4916
3351 EV_FREQUENT_CHECK; 4917 EV_FREQUENT_CHECK;
3352 4918
3353 { 4919 {
… …
3359 4925
3360 ev_stop (EV_A_ (W)w); 4926 ev_stop (EV_A_ (W)w);
3361 4927
3362 EV_FREQUENT_CHECK; 4928 EV_FREQUENT_CHECK;
3363} 4929}
4930#endif
3364 4931
3365#if EV_EMBED_ENABLE 4932#if EV_EMBED_ENABLE
3366void noinline 4933ecb_noinline
4934void
3367ev_embed_sweep (EV_P_ ev_embed *w) 4935ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
3368{ 4936{
3369 ev_loop (w->other, EVLOOP_NONBLOCK); 4937 ev_run (w->other, EVRUN_NOWAIT);
3370} 4938}
3371 4939
3372static void 4940static void
3373embed_io_cb (EV_P_ ev_io *io, int revents) 4941embed_io_cb (EV_P_ ev_io *io, int revents)
3374{ 4942{
3375 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4943 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3376 4944
3377 if (ev_cb (w)) 4945 if (ev_cb (w))
3378 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4946 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3379 else 4947 else
3380 ev_loop (w->other, EVLOOP_NONBLOCK); 4948 ev_run (w->other, EVRUN_NOWAIT);
3381} 4949}
3382 4950
3383static void 4951static void
3384embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4952embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3385{ 4953{
… …
3389 EV_P = w->other; 4957 EV_P = w->other;
3390 4958
3391 while (fdchangecnt) 4959 while (fdchangecnt)
3392 { 4960 {
3393 fd_reify (EV_A); 4961 fd_reify (EV_A);
3394 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4962 ev_run (EV_A_ EVRUN_NOWAIT);
3395 } 4963 }
3396 } 4964 }
3397} 4965}
3398 4966
3399static void 4967static void
… …
3405 4973
3406 { 4974 {
3407 EV_P = w->other; 4975 EV_P = w->other;
3408 4976
3409 ev_loop_fork (EV_A); 4977 ev_loop_fork (EV_A);
3410 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4978 ev_run (EV_A_ EVRUN_NOWAIT);
3411 } 4979 }
3412 4980
3413 ev_embed_start (EV_A_ w); 4981 ev_embed_start (EV_A_ w);
3414} 4982}
3415 4983
… …
3420 ev_idle_stop (EV_A_ idle); 4988 ev_idle_stop (EV_A_ idle);
3421} 4989}
3422#endif 4990#endif
3423 4991
3424void 4992void
3425ev_embed_start (EV_P_ ev_embed *w) 4993ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
3426{ 4994{
3427 if (expect_false (ev_is_active (w))) 4995 if (ecb_expect_false (ev_is_active (w)))
3428 return; 4996 return;
3429 4997
3430 { 4998 {
3431 EV_P = w->other; 4999 EV_P = w->other;
3432 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 5000 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
… …
3451 5019
3452 EV_FREQUENT_CHECK; 5020 EV_FREQUENT_CHECK;
3453} 5021}
3454 5022
3455void 5023void
3456ev_embed_stop (EV_P_ ev_embed *w) 5024ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
3457{ 5025{
3458 clear_pending (EV_A_ (W)w); 5026 clear_pending (EV_A_ (W)w);
3459 if (expect_false (!ev_is_active (w))) 5027 if (ecb_expect_false (!ev_is_active (w)))
3460 return; 5028 return;
3461 5029
3462 EV_FREQUENT_CHECK; 5030 EV_FREQUENT_CHECK;
3463 5031
3464 ev_io_stop (EV_A_ &w->io); 5032 ev_io_stop (EV_A_ &w->io);
… …
3471} 5039}
3472#endif 5040#endif
3473 5041
3474#if EV_FORK_ENABLE 5042#if EV_FORK_ENABLE
3475void 5043void
3476ev_fork_start (EV_P_ ev_fork *w) 5044ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
3477{ 5045{
3478 if (expect_false (ev_is_active (w))) 5046 if (ecb_expect_false (ev_is_active (w)))
3479 return; 5047 return;
3480 5048
3481 EV_FREQUENT_CHECK; 5049 EV_FREQUENT_CHECK;
3482 5050
3483 ev_start (EV_A_ (W)w, ++forkcnt); 5051 ev_start (EV_A_ (W)w, ++forkcnt);
3484 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 5052 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
3485 forks [forkcnt - 1] = w; 5053 forks [forkcnt - 1] = w;
3486 5054
3487 EV_FREQUENT_CHECK; 5055 EV_FREQUENT_CHECK;
3488} 5056}
3489 5057
3490void 5058void
3491ev_fork_stop (EV_P_ ev_fork *w) 5059ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
3492{ 5060{
3493 clear_pending (EV_A_ (W)w); 5061 clear_pending (EV_A_ (W)w);
3494 if (expect_false (!ev_is_active (w))) 5062 if (ecb_expect_false (!ev_is_active (w)))
3495 return; 5063 return;
3496 5064
3497 EV_FREQUENT_CHECK; 5065 EV_FREQUENT_CHECK;
3498 5066
3499 { 5067 {
… …
3507 5075
3508 EV_FREQUENT_CHECK; 5076 EV_FREQUENT_CHECK;
3509} 5077}
3510#endif 5078#endif
3511 5079
5080#if EV_CLEANUP_ENABLE
5081void
5082ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
5083{
5084 if (ecb_expect_false (ev_is_active (w)))
5085 return;
5086
5087 EV_FREQUENT_CHECK;
5088
5089 ev_start (EV_A_ (W)w, ++cleanupcnt);
5090 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
5091 cleanups [cleanupcnt - 1] = w;
5092
5093 /* cleanup watchers should never keep a refcount on the loop */
5094 ev_unref (EV_A);
5095 EV_FREQUENT_CHECK;
5096}
5097
5098void
5099ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
5100{
5101 clear_pending (EV_A_ (W)w);
5102 if (ecb_expect_false (!ev_is_active (w)))
5103 return;
5104
5105 EV_FREQUENT_CHECK;
5106 ev_ref (EV_A);
5107
5108 {
5109 int active = ev_active (w);
5110
5111 cleanups [active - 1] = cleanups [--cleanupcnt];
5112 ev_active (cleanups [active - 1]) = active;
5113 }
5114
5115 ev_stop (EV_A_ (W)w);
5116
5117 EV_FREQUENT_CHECK;
5118}
5119#endif
5120
3512#if EV_ASYNC_ENABLE 5121#if EV_ASYNC_ENABLE
3513void 5122void
3514ev_async_start (EV_P_ ev_async *w) 5123ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
3515{ 5124{
3516 if (expect_false (ev_is_active (w))) 5125 if (ecb_expect_false (ev_is_active (w)))
3517 return; 5126 return;
3518 5127
5128 w->sent = 0;
5129
3519 evpipe_init (EV_A); 5130 evpipe_init (EV_A);
3520 5131
3521 EV_FREQUENT_CHECK; 5132 EV_FREQUENT_CHECK;
3522 5133
3523 ev_start (EV_A_ (W)w, ++asynccnt); 5134 ev_start (EV_A_ (W)w, ++asynccnt);
3524 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 5135 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
3525 asyncs [asynccnt - 1] = w; 5136 asyncs [asynccnt - 1] = w;
3526 5137
3527 EV_FREQUENT_CHECK; 5138 EV_FREQUENT_CHECK;
3528} 5139}
3529 5140
3530void 5141void
3531ev_async_stop (EV_P_ ev_async *w) 5142ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
3532{ 5143{
3533 clear_pending (EV_A_ (W)w); 5144 clear_pending (EV_A_ (W)w);
3534 if (expect_false (!ev_is_active (w))) 5145 if (ecb_expect_false (!ev_is_active (w)))
3535 return; 5146 return;
3536 5147
3537 EV_FREQUENT_CHECK; 5148 EV_FREQUENT_CHECK;
3538 5149
3539 { 5150 {
… …
3547 5158
3548 EV_FREQUENT_CHECK; 5159 EV_FREQUENT_CHECK;
3549} 5160}
3550 5161
3551void 5162void
3552ev_async_send (EV_P_ ev_async *w) 5163ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
3553{ 5164{
3554 w->sent = 1; 5165 w->sent = 1;
3555 evpipe_write (EV_A_ &async_pending); 5166 evpipe_write (EV_A_ &async_pending);
3556} 5167}
3557#endif 5168#endif
… …
3594 5205
3595 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5206 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3596} 5207}
3597 5208
3598void 5209void
3599ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 5210ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
3600{ 5211{
3601 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5212 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3602
3603 if (expect_false (!once))
3604 {
3605 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
3606 return;
3607 }
3608 5213
3609 once->cb = cb; 5214 once->cb = cb;
3610 once->arg = arg; 5215 once->arg = arg;
3611 5216
3612 ev_init (&once->io, once_cb_io); 5217 ev_init (&once->io, once_cb_io);
… …
3625} 5230}
3626 5231
3627/*****************************************************************************/ 5232/*****************************************************************************/
3628 5233
3629#if EV_WALK_ENABLE 5234#if EV_WALK_ENABLE
5235ecb_cold
3630void 5236void
3631ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 5237ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
3632{ 5238{
3633 int i, j; 5239 int i, j;
3634 ev_watcher_list *wl, *wn; 5240 ev_watcher_list *wl, *wn;
3635 5241
3636 if (types & (EV_IO | EV_EMBED)) 5242 if (types & (EV_IO | EV_EMBED))
… …
3679 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 5285 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3680#endif 5286#endif
3681 5287
3682#if EV_IDLE_ENABLE 5288#if EV_IDLE_ENABLE
3683 if (types & EV_IDLE) 5289 if (types & EV_IDLE)
3684 for (j = NUMPRI; i--; ) 5290 for (j = NUMPRI; j--; )
3685 for (i = idlecnt [j]; i--; ) 5291 for (i = idlecnt [j]; i--; )
3686 cb (EV_A_ EV_IDLE, idles [j][i]); 5292 cb (EV_A_ EV_IDLE, idles [j][i]);
3687#endif 5293#endif
3688 5294
3689#if EV_FORK_ENABLE 5295#if EV_FORK_ENABLE
… …
3697 if (types & EV_ASYNC) 5303 if (types & EV_ASYNC)
3698 for (i = asynccnt; i--; ) 5304 for (i = asynccnt; i--; )
3699 cb (EV_A_ EV_ASYNC, asyncs [i]); 5305 cb (EV_A_ EV_ASYNC, asyncs [i]);
3700#endif 5306#endif
3701 5307
5308#if EV_PREPARE_ENABLE
3702 if (types & EV_PREPARE) 5309 if (types & EV_PREPARE)
3703 for (i = preparecnt; i--; ) 5310 for (i = preparecnt; i--; )
3704#if EV_EMBED_ENABLE 5311# if EV_EMBED_ENABLE
3705 if (ev_cb (prepares [i]) != embed_prepare_cb) 5312 if (ev_cb (prepares [i]) != embed_prepare_cb)
3706#endif 5313# endif
3707 cb (EV_A_ EV_PREPARE, prepares [i]); 5314 cb (EV_A_ EV_PREPARE, prepares [i]);
5315#endif
3708 5316
5317#if EV_CHECK_ENABLE
3709 if (types & EV_CHECK) 5318 if (types & EV_CHECK)
3710 for (i = checkcnt; i--; ) 5319 for (i = checkcnt; i--; )
3711 cb (EV_A_ EV_CHECK, checks [i]); 5320 cb (EV_A_ EV_CHECK, checks [i]);
5321#endif
3712 5322
5323#if EV_SIGNAL_ENABLE
3713 if (types & EV_SIGNAL) 5324 if (types & EV_SIGNAL)
3714 for (i = 0; i < EV_NSIG - 1; ++i) 5325 for (i = 0; i < EV_NSIG - 1; ++i)
3715 for (wl = signals [i].head; wl; ) 5326 for (wl = signals [i].head; wl; )
3716 { 5327 {
3717 wn = wl->next; 5328 wn = wl->next;
3718 cb (EV_A_ EV_SIGNAL, wl); 5329 cb (EV_A_ EV_SIGNAL, wl);
3719 wl = wn; 5330 wl = wn;
3720 } 5331 }
5332#endif
3721 5333
5334#if EV_CHILD_ENABLE
3722 if (types & EV_CHILD) 5335 if (types & EV_CHILD)
3723 for (i = EV_PID_HASHSIZE; i--; ) 5336 for (i = (EV_PID_HASHSIZE); i--; )
3724 for (wl = childs [i]; wl; ) 5337 for (wl = childs [i]; wl; )
3725 { 5338 {
3726 wn = wl->next; 5339 wn = wl->next;
3727 cb (EV_A_ EV_CHILD, wl); 5340 cb (EV_A_ EV_CHILD, wl);
3728 wl = wn; 5341 wl = wn;
3729 } 5342 }
5343#endif
3730/* EV_STAT 0x00001000 /* stat data changed */ 5344/* EV_STAT 0x00001000 /* stat data changed */
3731/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 5345/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3732} 5346}
3733#endif 5347#endif
3734 5348
3735#if EV_MULTIPLICITY 5349#if EV_MULTIPLICITY
3736 #include "ev_wrap.h" 5350 #include "ev_wrap.h"
3737#endif 5351#endif
3738 5352
3739#ifdef __cplusplus
3740}
3741#endif
3742

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