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Comparing libev/ev.c (file contents):
Revision 1.338 by root, Tue Mar 16 00:20:17 2010 UTC vs.
Revision 1.527 by root, Wed Jan 22 22:38:19 2020 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 0 /* was: EV_FEATURE_BACKENDS, always off by default */
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# if HAVE_SYS_TIMERFD_H
184# ifndef EV_USE_TIMERFD
185# define EV_USE_TIMERFD EV_FEATURE_OS
186# endif
187# else
188# undef EV_USE_TIMERFD
189# define EV_USE_TIMERFD 0
190# endif
191
192#endif
193
194/* OS X, in its infinite idiocy, actually HARDCODES
195 * a limit of 1024 into their select. Where people have brains,
196 * OS X engineers apparently have a vacuum. Or maybe they were
197 * ordered to have a vacuum, or they do anything for money.
198 * This might help. Or not.
199 * Note that this must be defined early, as other include files
200 * will rely on this define as well.
201 */
202#define _DARWIN_UNLIMITED_SELECT 1
203
157#include <stdlib.h> 204#include <stdlib.h>
158#include <string.h> 205#include <string.h>
159#include <fcntl.h> 206#include <fcntl.h>
160#include <stddef.h> 207#include <stddef.h>
161 208
… …
171 218
172#ifdef EV_H 219#ifdef EV_H
173# include EV_H 220# include EV_H
174#else 221#else
175# include "ev.h" 222# include "ev.h"
223#endif
224
225#if EV_NO_THREADS
226# undef EV_NO_SMP
227# define EV_NO_SMP 1
228# undef ECB_NO_THREADS
229# define ECB_NO_THREADS 1
230#endif
231#if EV_NO_SMP
232# undef EV_NO_SMP
233# define ECB_NO_SMP 1
176#endif 234#endif
177 235
178#ifndef _WIN32 236#ifndef _WIN32
179# include <sys/time.h> 237# include <sys/time.h>
180# include <sys/wait.h> 238# include <sys/wait.h>
181# include <unistd.h> 239# include <unistd.h>
182#else 240#else
183# include <io.h> 241# include <io.h>
184# define WIN32_LEAN_AND_MEAN 242# define WIN32_LEAN_AND_MEAN
243# include <winsock2.h>
185# include <windows.h> 244# include <windows.h>
186# ifndef EV_SELECT_IS_WINSOCKET 245# ifndef EV_SELECT_IS_WINSOCKET
187# define EV_SELECT_IS_WINSOCKET 1 246# define EV_SELECT_IS_WINSOCKET 1
188# endif 247# endif
189# undef EV_AVOID_STDIO 248# undef EV_AVOID_STDIO
190#endif 249#endif
191 250
192/* this block tries to deduce configuration from header-defined symbols and defaults */ 251/* this block tries to deduce configuration from header-defined symbols and defaults */
193 252
194/* try to deduce the maximum number of signals on this platform */ 253/* try to deduce the maximum number of signals on this platform */
195#if defined (EV_NSIG) 254#if defined EV_NSIG
196/* use what's provided */ 255/* use what's provided */
197#elif defined (NSIG) 256#elif defined NSIG
198# define EV_NSIG (NSIG) 257# define EV_NSIG (NSIG)
199#elif defined(_NSIG) 258#elif defined _NSIG
200# define EV_NSIG (_NSIG) 259# define EV_NSIG (_NSIG)
201#elif defined (SIGMAX) 260#elif defined SIGMAX
202# define EV_NSIG (SIGMAX+1) 261# define EV_NSIG (SIGMAX+1)
203#elif defined (SIG_MAX) 262#elif defined SIG_MAX
204# define EV_NSIG (SIG_MAX+1) 263# define EV_NSIG (SIG_MAX+1)
205#elif defined (_SIG_MAX) 264#elif defined _SIG_MAX
206# define EV_NSIG (_SIG_MAX+1) 265# define EV_NSIG (_SIG_MAX+1)
207#elif defined (MAXSIG) 266#elif defined MAXSIG
208# define EV_NSIG (MAXSIG+1) 267# define EV_NSIG (MAXSIG+1)
209#elif defined (MAX_SIG) 268#elif defined MAX_SIG
210# define EV_NSIG (MAX_SIG+1) 269# define EV_NSIG (MAX_SIG+1)
211#elif defined (SIGARRAYSIZE) 270#elif defined SIGARRAYSIZE
212# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ 271# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
213#elif defined (_sys_nsig) 272#elif defined _sys_nsig
214# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 273# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
215#else 274#else
216# error "unable to find value for NSIG, please report" 275# define EV_NSIG (8 * sizeof (sigset_t) + 1)
217/* to make it compile regardless, just remove the above line, */ 276#endif
218/* but consider reporting it, too! :) */ 277
219# define EV_NSIG 65 278#ifndef EV_USE_FLOOR
279# define EV_USE_FLOOR 0
220#endif 280#endif
221 281
222#ifndef EV_USE_CLOCK_SYSCALL 282#ifndef EV_USE_CLOCK_SYSCALL
223# if __linux && __GLIBC__ >= 2 283# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
224# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS 284# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
225# else 285# else
226# define EV_USE_CLOCK_SYSCALL 0 286# define EV_USE_CLOCK_SYSCALL 0
227# endif 287# endif
228#endif 288#endif
229 289
290#if !(_POSIX_TIMERS > 0)
291# ifndef EV_USE_MONOTONIC
292# define EV_USE_MONOTONIC 0
293# endif
294# ifndef EV_USE_REALTIME
295# define EV_USE_REALTIME 0
296# endif
297#endif
298
230#ifndef EV_USE_MONOTONIC 299#ifndef EV_USE_MONOTONIC
231# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 300# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
232# define EV_USE_MONOTONIC EV_FEATURE_OS 301# define EV_USE_MONOTONIC EV_FEATURE_OS
233# else 302# else
234# define EV_USE_MONOTONIC 0 303# define EV_USE_MONOTONIC 0
235# endif 304# endif
236#endif 305#endif
… …
273 342
274#ifndef EV_USE_PORT 343#ifndef EV_USE_PORT
275# define EV_USE_PORT 0 344# define EV_USE_PORT 0
276#endif 345#endif
277 346
347#ifndef EV_USE_LINUXAIO
348# if __linux /* libev currently assumes linux/aio_abi.h is always available on linux */
349# define EV_USE_LINUXAIO 0 /* was: 1, always off by default */
350# else
351# define EV_USE_LINUXAIO 0
352# endif
353#endif
354
355#ifndef EV_USE_IOURING
356# if __linux /* later checks might disable again */
357# define EV_USE_IOURING 1
358# else
359# define EV_USE_IOURING 0
360# endif
361#endif
362
278#ifndef EV_USE_INOTIFY 363#ifndef EV_USE_INOTIFY
279# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 364# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
280# define EV_USE_INOTIFY EV_FEATURE_OS 365# define EV_USE_INOTIFY EV_FEATURE_OS
281# else 366# else
282# define EV_USE_INOTIFY 0 367# define EV_USE_INOTIFY 0
… …
305# else 390# else
306# define EV_USE_SIGNALFD 0 391# define EV_USE_SIGNALFD 0
307# endif 392# endif
308#endif 393#endif
309 394
395#ifndef EV_USE_TIMERFD
396# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 8))
397# define EV_USE_TIMERFD EV_FEATURE_OS
398# else
399# define EV_USE_TIMERFD 0
400# endif
401#endif
402
310#if 0 /* debugging */ 403#if 0 /* debugging */
311# define EV_VERIFY 3 404# define EV_VERIFY 3
312# define EV_USE_4HEAP 1 405# define EV_USE_4HEAP 1
313# define EV_HEAP_CACHE_AT 1 406# define EV_HEAP_CACHE_AT 1
314#endif 407#endif
… …
323 416
324#ifndef EV_HEAP_CACHE_AT 417#ifndef EV_HEAP_CACHE_AT
325# define EV_HEAP_CACHE_AT EV_FEATURE_DATA 418# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
326#endif 419#endif
327 420
421#ifdef __ANDROID__
422/* supposedly, android doesn't typedef fd_mask */
423# undef EV_USE_SELECT
424# define EV_USE_SELECT 0
425/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
426# undef EV_USE_CLOCK_SYSCALL
427# define EV_USE_CLOCK_SYSCALL 0
428#endif
429
430/* aix's poll.h seems to cause lots of trouble */
431#ifdef _AIX
432/* AIX has a completely broken poll.h header */
433# undef EV_USE_POLL
434# define EV_USE_POLL 0
435#endif
436
328/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 437/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
329/* which makes programs even slower. might work on other unices, too. */ 438/* which makes programs even slower. might work on other unices, too. */
330#if EV_USE_CLOCK_SYSCALL 439#if EV_USE_CLOCK_SYSCALL
331# include <syscall.h> 440# include <sys/syscall.h>
332# ifdef SYS_clock_gettime 441# ifdef SYS_clock_gettime
333# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 442# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
334# undef EV_USE_MONOTONIC 443# undef EV_USE_MONOTONIC
335# define EV_USE_MONOTONIC 1 444# define EV_USE_MONOTONIC 1
445# define EV_NEED_SYSCALL 1
336# else 446# else
337# undef EV_USE_CLOCK_SYSCALL 447# undef EV_USE_CLOCK_SYSCALL
338# define EV_USE_CLOCK_SYSCALL 0 448# define EV_USE_CLOCK_SYSCALL 0
339# endif 449# endif
340#endif 450#endif
341 451
342/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 452/* this block fixes any misconfiguration where we know we run into trouble otherwise */
343 453
344#ifdef _AIX
345/* AIX has a completely broken poll.h header */
346# undef EV_USE_POLL
347# define EV_USE_POLL 0
348#endif
349
350#ifndef CLOCK_MONOTONIC 454#ifndef CLOCK_MONOTONIC
351# undef EV_USE_MONOTONIC 455# undef EV_USE_MONOTONIC
352# define EV_USE_MONOTONIC 0 456# define EV_USE_MONOTONIC 0
353#endif 457#endif
354 458
… …
360#if !EV_STAT_ENABLE 464#if !EV_STAT_ENABLE
361# undef EV_USE_INOTIFY 465# undef EV_USE_INOTIFY
362# define EV_USE_INOTIFY 0 466# define EV_USE_INOTIFY 0
363#endif 467#endif
364 468
469#if __linux && EV_USE_IOURING
470# include <linux/version.h>
471# if LINUX_VERSION_CODE < KERNEL_VERSION(4,14,0)
472# undef EV_USE_IOURING
473# define EV_USE_IOURING 0
474# endif
475#endif
476
365#if !EV_USE_NANOSLEEP 477#if !EV_USE_NANOSLEEP
366# ifndef _WIN32 478/* hp-ux has it in sys/time.h, which we unconditionally include above */
479# if !defined _WIN32 && !defined __hpux
367# include <sys/select.h> 480# include <sys/select.h>
368# endif 481# endif
369#endif 482#endif
370 483
484#if EV_USE_LINUXAIO
485# include <sys/syscall.h>
486# if SYS_io_getevents && EV_USE_EPOLL /* linuxaio backend requires epoll backend */
487# define EV_NEED_SYSCALL 1
488# else
489# undef EV_USE_LINUXAIO
490# define EV_USE_LINUXAIO 0
491# endif
492#endif
493
494#if EV_USE_IOURING
495# include <sys/syscall.h>
496# if !SYS_io_uring_setup && __linux && !__alpha
497# define SYS_io_uring_setup 425
498# define SYS_io_uring_enter 426
499# define SYS_io_uring_wregister 427
500# endif
501# if SYS_io_uring_setup && EV_USE_EPOLL /* iouring backend requires epoll backend */
502# define EV_NEED_SYSCALL 1
503# else
504# undef EV_USE_IOURING
505# define EV_USE_IOURING 0
506# endif
507#endif
508
371#if EV_USE_INOTIFY 509#if EV_USE_INOTIFY
372# include <sys/utsname.h>
373# include <sys/statfs.h> 510# include <sys/statfs.h>
374# include <sys/inotify.h> 511# include <sys/inotify.h>
375/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 512/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
376# ifndef IN_DONT_FOLLOW 513# ifndef IN_DONT_FOLLOW
377# undef EV_USE_INOTIFY 514# undef EV_USE_INOTIFY
378# define EV_USE_INOTIFY 0 515# define EV_USE_INOTIFY 0
379# endif 516# endif
380#endif 517#endif
381 518
382#if EV_SELECT_IS_WINSOCKET
383# include <winsock.h>
384#endif
385
386#if EV_USE_EVENTFD 519#if EV_USE_EVENTFD
387/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 520/* our minimum requirement is glibc 2.7 which has the stub, but not the full header */
388# include <stdint.h> 521# include <stdint.h>
389# ifndef EFD_NONBLOCK 522# ifndef EFD_NONBLOCK
390# define EFD_NONBLOCK O_NONBLOCK 523# define EFD_NONBLOCK O_NONBLOCK
391# endif 524# endif
392# ifndef EFD_CLOEXEC 525# ifndef EFD_CLOEXEC
… …
394# define EFD_CLOEXEC O_CLOEXEC 527# define EFD_CLOEXEC O_CLOEXEC
395# else 528# else
396# define EFD_CLOEXEC 02000000 529# define EFD_CLOEXEC 02000000
397# endif 530# endif
398# endif 531# endif
399# ifdef __cplusplus
400extern "C" {
401# endif
402int (eventfd) (unsigned int initval, int flags); 532EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
403# ifdef __cplusplus
404}
405# endif
406#endif 533#endif
407 534
408#if EV_USE_SIGNALFD 535#if EV_USE_SIGNALFD
409/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 536/* our minimum requirement is glibc 2.7 which has the stub, but not the full header */
410# include <stdint.h> 537# include <stdint.h>
411# ifndef SFD_NONBLOCK 538# ifndef SFD_NONBLOCK
412# define SFD_NONBLOCK O_NONBLOCK 539# define SFD_NONBLOCK O_NONBLOCK
413# endif 540# endif
414# ifndef SFD_CLOEXEC 541# ifndef SFD_CLOEXEC
… …
416# define SFD_CLOEXEC O_CLOEXEC 543# define SFD_CLOEXEC O_CLOEXEC
417# else 544# else
418# define SFD_CLOEXEC 02000000 545# define SFD_CLOEXEC 02000000
419# endif 546# endif
420# endif 547# endif
421# ifdef __cplusplus
422extern "C" {
423# endif
424int signalfd (int fd, const sigset_t *mask, int flags); 548EV_CPP (extern "C") int (signalfd) (int fd, const sigset_t *mask, int flags);
425 549
426struct signalfd_siginfo 550struct signalfd_siginfo
427{ 551{
428 uint32_t ssi_signo; 552 uint32_t ssi_signo;
429 char pad[128 - sizeof (uint32_t)]; 553 char pad[128 - sizeof (uint32_t)];
430}; 554};
431# ifdef __cplusplus 555#endif
432} 556
557/* for timerfd, libev core requires TFD_TIMER_CANCEL_ON_SET &c */
558#if EV_USE_TIMERFD
559# include <sys/timerfd.h>
560/* timerfd is only used for periodics */
561# if !(defined (TFD_TIMER_CANCEL_ON_SET) && defined (TFD_CLOEXEC) && defined (TFD_NONBLOCK)) || !EV_PERIODIC_ENABLE
562# undef EV_USE_TIMERFD
563# define EV_USE_TIMERFD 0
433# endif 564# endif
434#endif 565#endif
435 566
436 567/*****************************************************************************/
437/**/
438 568
439#if EV_VERIFY >= 3 569#if EV_VERIFY >= 3
440# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 570# define EV_FREQUENT_CHECK ev_verify (EV_A)
441#else 571#else
442# define EV_FREQUENT_CHECK do { } while (0) 572# define EV_FREQUENT_CHECK do { } while (0)
443#endif 573#endif
444 574
445/* 575/*
446 * This is used to avoid floating point rounding problems. 576 * This is used to work around floating point rounding problems.
447 * It is added to ev_rt_now when scheduling periodics
448 * to ensure progress, time-wise, even when rounding
449 * errors are against us.
450 * This value is good at least till the year 4000. 577 * This value is good at least till the year 4000.
451 * Better solutions welcome.
452 */ 578 */
453#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 579#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
580/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
454 581
455#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 582#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
456#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 583#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
584#define MAX_BLOCKTIME2 1500001.07 /* same, but when timerfd is used to detect jumps, also safe delay to not overflow */
457 585
586/* find a portable timestamp that is "always" in the future but fits into time_t.
587 * this is quite hard, and we are mostly guessing - we handle 32 bit signed/unsigned time_t,
588 * and sizes larger than 32 bit, and maybe the unlikely floating point time_t */
589#define EV_TSTAMP_HUGE \
590 (sizeof (time_t) >= 8 ? 10000000000000. \
591 : 0 < (time_t)4294967295 ? 4294967295. \
592 : 2147483647.) \
593
594#ifndef EV_TS_CONST
595# define EV_TS_CONST(nv) nv
596# define EV_TS_TO_MSEC(a) a * 1e3 + 0.9999
597# define EV_TS_FROM_USEC(us) us * 1e-6
598# define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
599# define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
600# define EV_TV_GET(tv) ((tv).tv_sec + (tv).tv_usec * 1e-6)
601# define EV_TS_GET(ts) ((ts).tv_sec + (ts).tv_nsec * 1e-9)
602#endif
603
604/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
605/* ECB.H BEGIN */
606/*
607 * libecb - http://software.schmorp.de/pkg/libecb
608 *
609 * Copyright (©) 2009-2015,2018-2020 Marc Alexander Lehmann <libecb@schmorp.de>
610 * Copyright (©) 2011 Emanuele Giaquinta
611 * All rights reserved.
612 *
613 * Redistribution and use in source and binary forms, with or without modifica-
614 * tion, are permitted provided that the following conditions are met:
615 *
616 * 1. Redistributions of source code must retain the above copyright notice,
617 * this list of conditions and the following disclaimer.
618 *
619 * 2. Redistributions in binary form must reproduce the above copyright
620 * notice, this list of conditions and the following disclaimer in the
621 * documentation and/or other materials provided with the distribution.
622 *
623 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
624 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
625 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
626 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
627 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
628 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
629 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
630 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
631 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
632 * OF THE POSSIBILITY OF SUCH DAMAGE.
633 *
634 * Alternatively, the contents of this file may be used under the terms of
635 * the GNU General Public License ("GPL") version 2 or any later version,
636 * in which case the provisions of the GPL are applicable instead of
637 * the above. If you wish to allow the use of your version of this file
638 * only under the terms of the GPL and not to allow others to use your
639 * version of this file under the BSD license, indicate your decision
640 * by deleting the provisions above and replace them with the notice
641 * and other provisions required by the GPL. If you do not delete the
642 * provisions above, a recipient may use your version of this file under
643 * either the BSD or the GPL.
644 */
645
646#ifndef ECB_H
647#define ECB_H
648
649/* 16 bits major, 16 bits minor */
650#define ECB_VERSION 0x00010008
651
652#include <string.h> /* for memcpy */
653
654#ifdef _WIN32
655 typedef signed char int8_t;
656 typedef unsigned char uint8_t;
657 typedef signed char int_fast8_t;
658 typedef unsigned char uint_fast8_t;
659 typedef signed short int16_t;
660 typedef unsigned short uint16_t;
661 typedef signed int int_fast16_t;
662 typedef unsigned int uint_fast16_t;
663 typedef signed int int32_t;
664 typedef unsigned int uint32_t;
665 typedef signed int int_fast32_t;
666 typedef unsigned int uint_fast32_t;
458#if __GNUC__ >= 4 667 #if __GNUC__
459# define expect(expr,value) __builtin_expect ((expr),(value)) 668 typedef signed long long int64_t;
460# define noinline __attribute__ ((noinline)) 669 typedef unsigned long long uint64_t;
670 #else /* _MSC_VER || __BORLANDC__ */
671 typedef signed __int64 int64_t;
672 typedef unsigned __int64 uint64_t;
673 #endif
674 typedef int64_t int_fast64_t;
675 typedef uint64_t uint_fast64_t;
676 #ifdef _WIN64
677 #define ECB_PTRSIZE 8
678 typedef uint64_t uintptr_t;
679 typedef int64_t intptr_t;
680 #else
681 #define ECB_PTRSIZE 4
682 typedef uint32_t uintptr_t;
683 typedef int32_t intptr_t;
684 #endif
461#else 685#else
462# define expect(expr,value) (expr) 686 #include <inttypes.h>
463# define noinline 687 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
464# if __STDC_VERSION__ < 199901L && __GNUC__ < 2 688 #define ECB_PTRSIZE 8
465# define inline 689 #else
690 #define ECB_PTRSIZE 4
691 #endif
466# endif 692#endif
693
694#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
695#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
696
697#ifndef ECB_OPTIMIZE_SIZE
698 #if __OPTIMIZE_SIZE__
699 #define ECB_OPTIMIZE_SIZE 1
700 #else
701 #define ECB_OPTIMIZE_SIZE 0
467#endif 702 #endif
703#endif
468 704
705/* work around x32 idiocy by defining proper macros */
706#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
707 #if _ILP32
708 #define ECB_AMD64_X32 1
709 #else
710 #define ECB_AMD64 1
711 #endif
712#endif
713
714/* many compilers define _GNUC_ to some versions but then only implement
715 * what their idiot authors think are the "more important" extensions,
716 * causing enormous grief in return for some better fake benchmark numbers.
717 * or so.
718 * we try to detect these and simply assume they are not gcc - if they have
719 * an issue with that they should have done it right in the first place.
720 */
721#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
722 #define ECB_GCC_VERSION(major,minor) 0
723#else
724 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
725#endif
726
727#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
728
729#if __clang__ && defined __has_builtin
730 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
731#else
732 #define ECB_CLANG_BUILTIN(x) 0
733#endif
734
735#if __clang__ && defined __has_extension
736 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
737#else
738 #define ECB_CLANG_EXTENSION(x) 0
739#endif
740
741#define ECB_CPP (__cplusplus+0)
742#define ECB_CPP11 (__cplusplus >= 201103L)
743#define ECB_CPP14 (__cplusplus >= 201402L)
744#define ECB_CPP17 (__cplusplus >= 201703L)
745
746#if ECB_CPP
747 #define ECB_C 0
748 #define ECB_STDC_VERSION 0
749#else
750 #define ECB_C 1
751 #define ECB_STDC_VERSION __STDC_VERSION__
752#endif
753
754#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
755#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
756#define ECB_C17 (ECB_STDC_VERSION >= 201710L)
757
758#if ECB_CPP
759 #define ECB_EXTERN_C extern "C"
760 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
761 #define ECB_EXTERN_C_END }
762#else
763 #define ECB_EXTERN_C extern
764 #define ECB_EXTERN_C_BEG
765 #define ECB_EXTERN_C_END
766#endif
767
768/*****************************************************************************/
769
770/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
771/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
772
773#if ECB_NO_THREADS
774 #define ECB_NO_SMP 1
775#endif
776
777#if ECB_NO_SMP
778 #define ECB_MEMORY_FENCE do { } while (0)
779#endif
780
781/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
782#if __xlC__ && ECB_CPP
783 #include <builtins.h>
784#endif
785
786#if 1400 <= _MSC_VER
787 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
788#endif
789
790#ifndef ECB_MEMORY_FENCE
791 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
792 #define ECB_MEMORY_FENCE_RELAXED __asm__ __volatile__ ("" : : : "memory")
793 #if __i386 || __i386__
794 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
795 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
796 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
797 #elif ECB_GCC_AMD64
798 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
799 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
800 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
801 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
802 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
803 #elif defined __ARM_ARCH_2__ \
804 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
805 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
806 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
807 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
808 || defined __ARM_ARCH_5TEJ__
809 /* should not need any, unless running old code on newer cpu - arm doesn't support that */
810 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
811 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
812 || defined __ARM_ARCH_6T2__
813 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
814 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
815 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
816 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
817 #elif __aarch64__
818 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
819 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
820 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
821 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
822 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
823 #elif defined __s390__ || defined __s390x__
824 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
825 #elif defined __mips__
826 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
827 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
828 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
829 #elif defined __alpha__
830 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
831 #elif defined __hppa__
832 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
833 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
834 #elif defined __ia64__
835 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
836 #elif defined __m68k__
837 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
838 #elif defined __m88k__
839 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
840 #elif defined __sh__
841 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
842 #endif
843 #endif
844#endif
845
846#ifndef ECB_MEMORY_FENCE
847 #if ECB_GCC_VERSION(4,7)
848 /* see comment below (stdatomic.h) about the C11 memory model. */
849 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
850 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
851 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
852 #define ECB_MEMORY_FENCE_RELAXED __atomic_thread_fence (__ATOMIC_RELAXED)
853
854 #elif ECB_CLANG_EXTENSION(c_atomic)
855 /* see comment below (stdatomic.h) about the C11 memory model. */
856 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
857 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
858 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
859 #define ECB_MEMORY_FENCE_RELAXED __c11_atomic_thread_fence (__ATOMIC_RELAXED)
860
861 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
862 #define ECB_MEMORY_FENCE __sync_synchronize ()
863 #elif _MSC_VER >= 1500 /* VC++ 2008 */
864 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
865 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
866 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
867 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
868 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
869 #elif _MSC_VER >= 1400 /* VC++ 2005 */
870 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
871 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
872 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
873 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
874 #elif defined _WIN32
875 #include <WinNT.h>
876 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
877 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
878 #include <mbarrier.h>
879 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
880 #define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier ()
881 #define ECB_MEMORY_FENCE_RELEASE __machine_rel_barrier ()
882 #define ECB_MEMORY_FENCE_RELAXED __compiler_barrier ()
883 #elif __xlC__
884 #define ECB_MEMORY_FENCE __sync ()
885 #endif
886#endif
887
888#ifndef ECB_MEMORY_FENCE
889 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
890 /* we assume that these memory fences work on all variables/all memory accesses, */
891 /* not just C11 atomics and atomic accesses */
892 #include <stdatomic.h>
893 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
894 #define ECB_MEMORY_FENCE_ACQUIRE atomic_thread_fence (memory_order_acquire)
895 #define ECB_MEMORY_FENCE_RELEASE atomic_thread_fence (memory_order_release)
896 #endif
897#endif
898
899#ifndef ECB_MEMORY_FENCE
900 #if !ECB_AVOID_PTHREADS
901 /*
902 * if you get undefined symbol references to pthread_mutex_lock,
903 * or failure to find pthread.h, then you should implement
904 * the ECB_MEMORY_FENCE operations for your cpu/compiler
905 * OR provide pthread.h and link against the posix thread library
906 * of your system.
907 */
908 #include <pthread.h>
909 #define ECB_NEEDS_PTHREADS 1
910 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
911
912 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
913 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
914 #endif
915#endif
916
917#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
918 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
919#endif
920
921#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
922 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
923#endif
924
925#if !defined ECB_MEMORY_FENCE_RELAXED && defined ECB_MEMORY_FENCE
926 #define ECB_MEMORY_FENCE_RELAXED ECB_MEMORY_FENCE /* very heavy-handed */
927#endif
928
929/*****************************************************************************/
930
931#if ECB_CPP
932 #define ecb_inline static inline
933#elif ECB_GCC_VERSION(2,5)
934 #define ecb_inline static __inline__
935#elif ECB_C99
936 #define ecb_inline static inline
937#else
938 #define ecb_inline static
939#endif
940
941#if ECB_GCC_VERSION(3,3)
942 #define ecb_restrict __restrict__
943#elif ECB_C99
944 #define ecb_restrict restrict
945#else
946 #define ecb_restrict
947#endif
948
949typedef int ecb_bool;
950
951#define ECB_CONCAT_(a, b) a ## b
952#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
953#define ECB_STRINGIFY_(a) # a
954#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
955#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
956
957#define ecb_function_ ecb_inline
958
959#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
960 #define ecb_attribute(attrlist) __attribute__ (attrlist)
961#else
962 #define ecb_attribute(attrlist)
963#endif
964
965#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
966 #define ecb_is_constant(expr) __builtin_constant_p (expr)
967#else
968 /* possible C11 impl for integral types
969 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
970 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
971
972 #define ecb_is_constant(expr) 0
973#endif
974
975#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
976 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
977#else
978 #define ecb_expect(expr,value) (expr)
979#endif
980
981#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
982 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
983#else
984 #define ecb_prefetch(addr,rw,locality)
985#endif
986
987/* no emulation for ecb_decltype */
988#if ECB_CPP11
989 // older implementations might have problems with decltype(x)::type, work around it
990 template<class T> struct ecb_decltype_t { typedef T type; };
991 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
992#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
993 #define ecb_decltype(x) __typeof__ (x)
994#endif
995
996#if _MSC_VER >= 1300
997 #define ecb_deprecated __declspec (deprecated)
998#else
999 #define ecb_deprecated ecb_attribute ((__deprecated__))
1000#endif
1001
1002#if _MSC_VER >= 1500
1003 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
1004#elif ECB_GCC_VERSION(4,5)
1005 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
1006#else
1007 #define ecb_deprecated_message(msg) ecb_deprecated
1008#endif
1009
1010#if _MSC_VER >= 1400
1011 #define ecb_noinline __declspec (noinline)
1012#else
1013 #define ecb_noinline ecb_attribute ((__noinline__))
1014#endif
1015
1016#define ecb_unused ecb_attribute ((__unused__))
1017#define ecb_const ecb_attribute ((__const__))
1018#define ecb_pure ecb_attribute ((__pure__))
1019
1020#if ECB_C11 || __IBMC_NORETURN
1021 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
1022 #define ecb_noreturn _Noreturn
1023#elif ECB_CPP11
1024 #define ecb_noreturn [[noreturn]]
1025#elif _MSC_VER >= 1200
1026 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
1027 #define ecb_noreturn __declspec (noreturn)
1028#else
1029 #define ecb_noreturn ecb_attribute ((__noreturn__))
1030#endif
1031
1032#if ECB_GCC_VERSION(4,3)
1033 #define ecb_artificial ecb_attribute ((__artificial__))
1034 #define ecb_hot ecb_attribute ((__hot__))
1035 #define ecb_cold ecb_attribute ((__cold__))
1036#else
1037 #define ecb_artificial
1038 #define ecb_hot
1039 #define ecb_cold
1040#endif
1041
1042/* put around conditional expressions if you are very sure that the */
1043/* expression is mostly true or mostly false. note that these return */
1044/* booleans, not the expression. */
469#define expect_false(expr) expect ((expr) != 0, 0) 1045#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
470#define expect_true(expr) expect ((expr) != 0, 1) 1046#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
1047/* for compatibility to the rest of the world */
1048#define ecb_likely(expr) ecb_expect_true (expr)
1049#define ecb_unlikely(expr) ecb_expect_false (expr)
1050
1051/* count trailing zero bits and count # of one bits */
1052#if ECB_GCC_VERSION(3,4) \
1053 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
1054 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
1055 && ECB_CLANG_BUILTIN(__builtin_popcount))
1056 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
1057 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
1058 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
1059 #define ecb_ctz32(x) __builtin_ctz (x)
1060 #define ecb_ctz64(x) __builtin_ctzll (x)
1061 #define ecb_popcount32(x) __builtin_popcount (x)
1062 /* no popcountll */
1063#else
1064 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
1065 ecb_function_ ecb_const int
1066 ecb_ctz32 (uint32_t x)
1067 {
1068#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1069 unsigned long r;
1070 _BitScanForward (&r, x);
1071 return (int)r;
1072#else
1073 int r = 0;
1074
1075 x &= ~x + 1; /* this isolates the lowest bit */
1076
1077#if ECB_branchless_on_i386
1078 r += !!(x & 0xaaaaaaaa) << 0;
1079 r += !!(x & 0xcccccccc) << 1;
1080 r += !!(x & 0xf0f0f0f0) << 2;
1081 r += !!(x & 0xff00ff00) << 3;
1082 r += !!(x & 0xffff0000) << 4;
1083#else
1084 if (x & 0xaaaaaaaa) r += 1;
1085 if (x & 0xcccccccc) r += 2;
1086 if (x & 0xf0f0f0f0) r += 4;
1087 if (x & 0xff00ff00) r += 8;
1088 if (x & 0xffff0000) r += 16;
1089#endif
1090
1091 return r;
1092#endif
1093 }
1094
1095 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
1096 ecb_function_ ecb_const int
1097 ecb_ctz64 (uint64_t x)
1098 {
1099#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1100 unsigned long r;
1101 _BitScanForward64 (&r, x);
1102 return (int)r;
1103#else
1104 int shift = x & 0xffffffff ? 0 : 32;
1105 return ecb_ctz32 (x >> shift) + shift;
1106#endif
1107 }
1108
1109 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
1110 ecb_function_ ecb_const int
1111 ecb_popcount32 (uint32_t x)
1112 {
1113 x -= (x >> 1) & 0x55555555;
1114 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
1115 x = ((x >> 4) + x) & 0x0f0f0f0f;
1116 x *= 0x01010101;
1117
1118 return x >> 24;
1119 }
1120
1121 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
1122 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
1123 {
1124#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1125 unsigned long r;
1126 _BitScanReverse (&r, x);
1127 return (int)r;
1128#else
1129 int r = 0;
1130
1131 if (x >> 16) { x >>= 16; r += 16; }
1132 if (x >> 8) { x >>= 8; r += 8; }
1133 if (x >> 4) { x >>= 4; r += 4; }
1134 if (x >> 2) { x >>= 2; r += 2; }
1135 if (x >> 1) { r += 1; }
1136
1137 return r;
1138#endif
1139 }
1140
1141 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
1142 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
1143 {
1144#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1145 unsigned long r;
1146 _BitScanReverse64 (&r, x);
1147 return (int)r;
1148#else
1149 int r = 0;
1150
1151 if (x >> 32) { x >>= 32; r += 32; }
1152
1153 return r + ecb_ld32 (x);
1154#endif
1155 }
1156#endif
1157
1158ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
1159ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
1160ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
1161ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
1162
1163ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
1164ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
1165{
1166 return ( (x * 0x0802U & 0x22110U)
1167 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
1168}
1169
1170ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
1171ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
1172{
1173 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
1174 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
1175 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
1176 x = ( x >> 8 ) | ( x << 8);
1177
1178 return x;
1179}
1180
1181ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
1182ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
1183{
1184 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
1185 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
1186 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
1187 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
1188 x = ( x >> 16 ) | ( x << 16);
1189
1190 return x;
1191}
1192
1193/* popcount64 is only available on 64 bit cpus as gcc builtin */
1194/* so for this version we are lazy */
1195ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
1196ecb_function_ ecb_const int
1197ecb_popcount64 (uint64_t x)
1198{
1199 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
1200}
1201
1202ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
1203ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
1204ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
1205ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
1206ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
1207ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
1208ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
1209ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
1210
1211ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
1212ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
1213ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
1214ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
1215ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
1216ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
1217ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
1218ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
1219
1220#if ECB_CPP
1221
1222inline uint8_t ecb_ctz (uint8_t v) { return ecb_ctz32 (v); }
1223inline uint16_t ecb_ctz (uint16_t v) { return ecb_ctz32 (v); }
1224inline uint32_t ecb_ctz (uint32_t v) { return ecb_ctz32 (v); }
1225inline uint64_t ecb_ctz (uint64_t v) { return ecb_ctz64 (v); }
1226
1227inline bool ecb_is_pot (uint8_t v) { return ecb_is_pot32 (v); }
1228inline bool ecb_is_pot (uint16_t v) { return ecb_is_pot32 (v); }
1229inline bool ecb_is_pot (uint32_t v) { return ecb_is_pot32 (v); }
1230inline bool ecb_is_pot (uint64_t v) { return ecb_is_pot64 (v); }
1231
1232inline int ecb_ld (uint8_t v) { return ecb_ld32 (v); }
1233inline int ecb_ld (uint16_t v) { return ecb_ld32 (v); }
1234inline int ecb_ld (uint32_t v) { return ecb_ld32 (v); }
1235inline int ecb_ld (uint64_t v) { return ecb_ld64 (v); }
1236
1237inline int ecb_popcount (uint8_t v) { return ecb_popcount32 (v); }
1238inline int ecb_popcount (uint16_t v) { return ecb_popcount32 (v); }
1239inline int ecb_popcount (uint32_t v) { return ecb_popcount32 (v); }
1240inline int ecb_popcount (uint64_t v) { return ecb_popcount64 (v); }
1241
1242inline uint8_t ecb_bitrev (uint8_t v) { return ecb_bitrev8 (v); }
1243inline uint16_t ecb_bitrev (uint16_t v) { return ecb_bitrev16 (v); }
1244inline uint32_t ecb_bitrev (uint32_t v) { return ecb_bitrev32 (v); }
1245
1246inline uint8_t ecb_rotl (uint8_t v, unsigned int count) { return ecb_rotl8 (v, count); }
1247inline uint16_t ecb_rotl (uint16_t v, unsigned int count) { return ecb_rotl16 (v, count); }
1248inline uint32_t ecb_rotl (uint32_t v, unsigned int count) { return ecb_rotl32 (v, count); }
1249inline uint64_t ecb_rotl (uint64_t v, unsigned int count) { return ecb_rotl64 (v, count); }
1250
1251inline uint8_t ecb_rotr (uint8_t v, unsigned int count) { return ecb_rotr8 (v, count); }
1252inline uint16_t ecb_rotr (uint16_t v, unsigned int count) { return ecb_rotr16 (v, count); }
1253inline uint32_t ecb_rotr (uint32_t v, unsigned int count) { return ecb_rotr32 (v, count); }
1254inline uint64_t ecb_rotr (uint64_t v, unsigned int count) { return ecb_rotr64 (v, count); }
1255
1256#endif
1257
1258#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1259 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1260 #define ecb_bswap16(x) __builtin_bswap16 (x)
1261 #else
1262 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1263 #endif
1264 #define ecb_bswap32(x) __builtin_bswap32 (x)
1265 #define ecb_bswap64(x) __builtin_bswap64 (x)
1266#elif _MSC_VER
1267 #include <stdlib.h>
1268 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1269 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1270 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
1271#else
1272 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
1273 ecb_function_ ecb_const uint16_t
1274 ecb_bswap16 (uint16_t x)
1275 {
1276 return ecb_rotl16 (x, 8);
1277 }
1278
1279 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
1280 ecb_function_ ecb_const uint32_t
1281 ecb_bswap32 (uint32_t x)
1282 {
1283 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
1284 }
1285
1286 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
1287 ecb_function_ ecb_const uint64_t
1288 ecb_bswap64 (uint64_t x)
1289 {
1290 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
1291 }
1292#endif
1293
1294#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
1295 #define ecb_unreachable() __builtin_unreachable ()
1296#else
1297 /* this seems to work fine, but gcc always emits a warning for it :/ */
1298 ecb_inline ecb_noreturn void ecb_unreachable (void);
1299 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
1300#endif
1301
1302/* try to tell the compiler that some condition is definitely true */
1303#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
1304
1305ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
1306ecb_inline ecb_const uint32_t
1307ecb_byteorder_helper (void)
1308{
1309 /* the union code still generates code under pressure in gcc, */
1310 /* but less than using pointers, and always seems to */
1311 /* successfully return a constant. */
1312 /* the reason why we have this horrible preprocessor mess */
1313 /* is to avoid it in all cases, at least on common architectures */
1314 /* or when using a recent enough gcc version (>= 4.6) */
1315#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1316 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1317 #define ECB_LITTLE_ENDIAN 1
1318 return 0x44332211;
1319#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1320 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1321 #define ECB_BIG_ENDIAN 1
1322 return 0x11223344;
1323#else
1324 union
1325 {
1326 uint8_t c[4];
1327 uint32_t u;
1328 } u = { 0x11, 0x22, 0x33, 0x44 };
1329 return u.u;
1330#endif
1331}
1332
1333ecb_inline ecb_const ecb_bool ecb_big_endian (void);
1334ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
1335ecb_inline ecb_const ecb_bool ecb_little_endian (void);
1336ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
1337
1338/*****************************************************************************/
1339/* unaligned load/store */
1340
1341ecb_inline uint_fast16_t ecb_be_u16_to_host (uint_fast16_t v) { return ecb_little_endian () ? ecb_bswap16 (v) : v; }
1342ecb_inline uint_fast32_t ecb_be_u32_to_host (uint_fast32_t v) { return ecb_little_endian () ? ecb_bswap32 (v) : v; }
1343ecb_inline uint_fast64_t ecb_be_u64_to_host (uint_fast64_t v) { return ecb_little_endian () ? ecb_bswap64 (v) : v; }
1344
1345ecb_inline uint_fast16_t ecb_le_u16_to_host (uint_fast16_t v) { return ecb_big_endian () ? ecb_bswap16 (v) : v; }
1346ecb_inline uint_fast32_t ecb_le_u32_to_host (uint_fast32_t v) { return ecb_big_endian () ? ecb_bswap32 (v) : v; }
1347ecb_inline uint_fast64_t ecb_le_u64_to_host (uint_fast64_t v) { return ecb_big_endian () ? ecb_bswap64 (v) : v; }
1348
1349ecb_inline uint_fast16_t ecb_peek_u16_u (const void *ptr) { uint16_t v; memcpy (&v, ptr, sizeof (v)); return v; }
1350ecb_inline uint_fast32_t ecb_peek_u32_u (const void *ptr) { uint32_t v; memcpy (&v, ptr, sizeof (v)); return v; }
1351ecb_inline uint_fast64_t ecb_peek_u64_u (const void *ptr) { uint64_t v; memcpy (&v, ptr, sizeof (v)); return v; }
1352
1353ecb_inline uint_fast16_t ecb_peek_be_u16_u (const void *ptr) { return ecb_be_u16_to_host (ecb_peek_u16_u (ptr)); }
1354ecb_inline uint_fast32_t ecb_peek_be_u32_u (const void *ptr) { return ecb_be_u32_to_host (ecb_peek_u32_u (ptr)); }
1355ecb_inline uint_fast64_t ecb_peek_be_u64_u (const void *ptr) { return ecb_be_u64_to_host (ecb_peek_u64_u (ptr)); }
1356
1357ecb_inline uint_fast16_t ecb_peek_le_u16_u (const void *ptr) { return ecb_le_u16_to_host (ecb_peek_u16_u (ptr)); }
1358ecb_inline uint_fast32_t ecb_peek_le_u32_u (const void *ptr) { return ecb_le_u32_to_host (ecb_peek_u32_u (ptr)); }
1359ecb_inline uint_fast64_t ecb_peek_le_u64_u (const void *ptr) { return ecb_le_u64_to_host (ecb_peek_u64_u (ptr)); }
1360
1361ecb_inline uint_fast16_t ecb_host_to_be_u16 (uint_fast16_t v) { return ecb_little_endian () ? ecb_bswap16 (v) : v; }
1362ecb_inline uint_fast32_t ecb_host_to_be_u32 (uint_fast32_t v) { return ecb_little_endian () ? ecb_bswap32 (v) : v; }
1363ecb_inline uint_fast64_t ecb_host_to_be_u64 (uint_fast64_t v) { return ecb_little_endian () ? ecb_bswap64 (v) : v; }
1364
1365ecb_inline uint_fast16_t ecb_host_to_le_u16 (uint_fast16_t v) { return ecb_big_endian () ? ecb_bswap16 (v) : v; }
1366ecb_inline uint_fast32_t ecb_host_to_le_u32 (uint_fast32_t v) { return ecb_big_endian () ? ecb_bswap32 (v) : v; }
1367ecb_inline uint_fast64_t ecb_host_to_le_u64 (uint_fast64_t v) { return ecb_big_endian () ? ecb_bswap64 (v) : v; }
1368
1369ecb_inline void ecb_poke_u16_u (void *ptr, uint16_t v) { memcpy (ptr, &v, sizeof (v)); }
1370ecb_inline void ecb_poke_u32_u (void *ptr, uint32_t v) { memcpy (ptr, &v, sizeof (v)); }
1371ecb_inline void ecb_poke_u64_u (void *ptr, uint64_t v) { memcpy (ptr, &v, sizeof (v)); }
1372
1373ecb_inline void ecb_poke_be_u16_u (void *ptr, uint_fast16_t v) { ecb_poke_u16_u (ptr, ecb_host_to_be_u16 (v)); }
1374ecb_inline void ecb_poke_be_u32_u (void *ptr, uint_fast32_t v) { ecb_poke_u32_u (ptr, ecb_host_to_be_u32 (v)); }
1375ecb_inline void ecb_poke_be_u64_u (void *ptr, uint_fast64_t v) { ecb_poke_u64_u (ptr, ecb_host_to_be_u64 (v)); }
1376
1377ecb_inline void ecb_poke_le_u16_u (void *ptr, uint_fast16_t v) { ecb_poke_u16_u (ptr, ecb_host_to_le_u16 (v)); }
1378ecb_inline void ecb_poke_le_u32_u (void *ptr, uint_fast32_t v) { ecb_poke_u32_u (ptr, ecb_host_to_le_u32 (v)); }
1379ecb_inline void ecb_poke_le_u64_u (void *ptr, uint_fast64_t v) { ecb_poke_u64_u (ptr, ecb_host_to_le_u64 (v)); }
1380
1381#if ECB_CPP
1382
1383inline uint8_t ecb_bswap (uint8_t v) { return v; }
1384inline uint16_t ecb_bswap (uint16_t v) { return ecb_bswap16 (v); }
1385inline uint32_t ecb_bswap (uint32_t v) { return ecb_bswap32 (v); }
1386inline uint64_t ecb_bswap (uint64_t v) { return ecb_bswap64 (v); }
1387
1388template<typename T> inline T ecb_be_to_host (T v) { return ecb_little_endian () ? ecb_bswap (v) : v; }
1389template<typename T> inline T ecb_le_to_host (T v) { return ecb_big_endian () ? ecb_bswap (v) : v; }
1390template<typename T> inline T ecb_peek (const void *ptr) { return *(const T *)ptr; }
1391template<typename T> inline T ecb_peek_be (const void *ptr) { return ecb_be_to_host (ecb_peek <T> (ptr)); }
1392template<typename T> inline T ecb_peek_le (const void *ptr) { return ecb_le_to_host (ecb_peek <T> (ptr)); }
1393template<typename T> inline T ecb_peek_u (const void *ptr) { T v; memcpy (&v, ptr, sizeof (v)); return v; }
1394template<typename T> inline T ecb_peek_be_u (const void *ptr) { return ecb_be_to_host (ecb_peek_u<T> (ptr)); }
1395template<typename T> inline T ecb_peek_le_u (const void *ptr) { return ecb_le_to_host (ecb_peek_u<T> (ptr)); }
1396
1397template<typename T> inline T ecb_host_to_be (T v) { return ecb_little_endian () ? ecb_bswap (v) : v; }
1398template<typename T> inline T ecb_host_to_le (T v) { return ecb_big_endian () ? ecb_bswap (v) : v; }
1399template<typename T> inline void ecb_poke (void *ptr, T v) { *(T *)ptr = v; }
1400template<typename T> inline void ecb_poke_be (void *ptr, T v) { return ecb_poke <T> (ptr, ecb_host_to_be (v)); }
1401template<typename T> inline void ecb_poke_le (void *ptr, T v) { return ecb_poke <T> (ptr, ecb_host_to_le (v)); }
1402template<typename T> inline void ecb_poke_u (void *ptr, T v) { memcpy (ptr, &v, sizeof (v)); }
1403template<typename T> inline void ecb_poke_be_u (void *ptr, T v) { return ecb_poke_u<T> (ptr, ecb_host_to_be (v)); }
1404template<typename T> inline void ecb_poke_le_u (void *ptr, T v) { return ecb_poke_u<T> (ptr, ecb_host_to_le (v)); }
1405
1406#endif
1407
1408/*****************************************************************************/
1409
1410#if ECB_GCC_VERSION(3,0) || ECB_C99
1411 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1412#else
1413 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1414#endif
1415
1416#if ECB_CPP
1417 template<typename T>
1418 static inline T ecb_div_rd (T val, T div)
1419 {
1420 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1421 }
1422 template<typename T>
1423 static inline T ecb_div_ru (T val, T div)
1424 {
1425 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1426 }
1427#else
1428 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1429 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1430#endif
1431
1432#if ecb_cplusplus_does_not_suck
1433 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1434 template<typename T, int N>
1435 static inline int ecb_array_length (const T (&arr)[N])
1436 {
1437 return N;
1438 }
1439#else
1440 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1441#endif
1442
1443/*****************************************************************************/
1444
1445ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1446ecb_function_ ecb_const uint32_t
1447ecb_binary16_to_binary32 (uint32_t x)
1448{
1449 unsigned int s = (x & 0x8000) << (31 - 15);
1450 int e = (x >> 10) & 0x001f;
1451 unsigned int m = x & 0x03ff;
1452
1453 if (ecb_expect_false (e == 31))
1454 /* infinity or NaN */
1455 e = 255 - (127 - 15);
1456 else if (ecb_expect_false (!e))
1457 {
1458 if (ecb_expect_true (!m))
1459 /* zero, handled by code below by forcing e to 0 */
1460 e = 0 - (127 - 15);
1461 else
1462 {
1463 /* subnormal, renormalise */
1464 unsigned int s = 10 - ecb_ld32 (m);
1465
1466 m = (m << s) & 0x3ff; /* mask implicit bit */
1467 e -= s - 1;
1468 }
1469 }
1470
1471 /* e and m now are normalised, or zero, (or inf or nan) */
1472 e += 127 - 15;
1473
1474 return s | (e << 23) | (m << (23 - 10));
1475}
1476
1477ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1478ecb_function_ ecb_const uint16_t
1479ecb_binary32_to_binary16 (uint32_t x)
1480{
1481 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1482 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1483 unsigned int m = x & 0x007fffff;
1484
1485 x &= 0x7fffffff;
1486
1487 /* if it's within range of binary16 normals, use fast path */
1488 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1489 {
1490 /* mantissa round-to-even */
1491 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1492
1493 /* handle overflow */
1494 if (ecb_expect_false (m >= 0x00800000))
1495 {
1496 m >>= 1;
1497 e += 1;
1498 }
1499
1500 return s | (e << 10) | (m >> (23 - 10));
1501 }
1502
1503 /* handle large numbers and infinity */
1504 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1505 return s | 0x7c00;
1506
1507 /* handle zero, subnormals and small numbers */
1508 if (ecb_expect_true (x < 0x38800000))
1509 {
1510 /* zero */
1511 if (ecb_expect_true (!x))
1512 return s;
1513
1514 /* handle subnormals */
1515
1516 /* too small, will be zero */
1517 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1518 return s;
1519
1520 m |= 0x00800000; /* make implicit bit explicit */
1521
1522 /* very tricky - we need to round to the nearest e (+10) bit value */
1523 {
1524 unsigned int bits = 14 - e;
1525 unsigned int half = (1 << (bits - 1)) - 1;
1526 unsigned int even = (m >> bits) & 1;
1527
1528 /* if this overflows, we will end up with a normalised number */
1529 m = (m + half + even) >> bits;
1530 }
1531
1532 return s | m;
1533 }
1534
1535 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1536 m >>= 13;
1537
1538 return s | 0x7c00 | m | !m;
1539}
1540
1541/*******************************************************************************/
1542/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1543
1544/* basically, everything uses "ieee pure-endian" floating point numbers */
1545/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1546#if 0 \
1547 || __i386 || __i386__ \
1548 || ECB_GCC_AMD64 \
1549 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1550 || defined __s390__ || defined __s390x__ \
1551 || defined __mips__ \
1552 || defined __alpha__ \
1553 || defined __hppa__ \
1554 || defined __ia64__ \
1555 || defined __m68k__ \
1556 || defined __m88k__ \
1557 || defined __sh__ \
1558 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1559 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1560 || defined __aarch64__
1561 #define ECB_STDFP 1
1562#else
1563 #define ECB_STDFP 0
1564#endif
1565
1566#ifndef ECB_NO_LIBM
1567
1568 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1569
1570 /* only the oldest of old doesn't have this one. solaris. */
1571 #ifdef INFINITY
1572 #define ECB_INFINITY INFINITY
1573 #else
1574 #define ECB_INFINITY HUGE_VAL
1575 #endif
1576
1577 #ifdef NAN
1578 #define ECB_NAN NAN
1579 #else
1580 #define ECB_NAN ECB_INFINITY
1581 #endif
1582
1583 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1584 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1585 #define ecb_frexpf(x,e) frexpf ((x), (e))
1586 #else
1587 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1588 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1589 #endif
1590
1591 /* convert a float to ieee single/binary32 */
1592 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1593 ecb_function_ ecb_const uint32_t
1594 ecb_float_to_binary32 (float x)
1595 {
1596 uint32_t r;
1597
1598 #if ECB_STDFP
1599 memcpy (&r, &x, 4);
1600 #else
1601 /* slow emulation, works for anything but -0 */
1602 uint32_t m;
1603 int e;
1604
1605 if (x == 0e0f ) return 0x00000000U;
1606 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1607 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1608 if (x != x ) return 0x7fbfffffU;
1609
1610 m = ecb_frexpf (x, &e) * 0x1000000U;
1611
1612 r = m & 0x80000000U;
1613
1614 if (r)
1615 m = -m;
1616
1617 if (e <= -126)
1618 {
1619 m &= 0xffffffU;
1620 m >>= (-125 - e);
1621 e = -126;
1622 }
1623
1624 r |= (e + 126) << 23;
1625 r |= m & 0x7fffffU;
1626 #endif
1627
1628 return r;
1629 }
1630
1631 /* converts an ieee single/binary32 to a float */
1632 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1633 ecb_function_ ecb_const float
1634 ecb_binary32_to_float (uint32_t x)
1635 {
1636 float r;
1637
1638 #if ECB_STDFP
1639 memcpy (&r, &x, 4);
1640 #else
1641 /* emulation, only works for normals and subnormals and +0 */
1642 int neg = x >> 31;
1643 int e = (x >> 23) & 0xffU;
1644
1645 x &= 0x7fffffU;
1646
1647 if (e)
1648 x |= 0x800000U;
1649 else
1650 e = 1;
1651
1652 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1653 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1654
1655 r = neg ? -r : r;
1656 #endif
1657
1658 return r;
1659 }
1660
1661 /* convert a double to ieee double/binary64 */
1662 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1663 ecb_function_ ecb_const uint64_t
1664 ecb_double_to_binary64 (double x)
1665 {
1666 uint64_t r;
1667
1668 #if ECB_STDFP
1669 memcpy (&r, &x, 8);
1670 #else
1671 /* slow emulation, works for anything but -0 */
1672 uint64_t m;
1673 int e;
1674
1675 if (x == 0e0 ) return 0x0000000000000000U;
1676 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1677 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1678 if (x != x ) return 0X7ff7ffffffffffffU;
1679
1680 m = frexp (x, &e) * 0x20000000000000U;
1681
1682 r = m & 0x8000000000000000;;
1683
1684 if (r)
1685 m = -m;
1686
1687 if (e <= -1022)
1688 {
1689 m &= 0x1fffffffffffffU;
1690 m >>= (-1021 - e);
1691 e = -1022;
1692 }
1693
1694 r |= ((uint64_t)(e + 1022)) << 52;
1695 r |= m & 0xfffffffffffffU;
1696 #endif
1697
1698 return r;
1699 }
1700
1701 /* converts an ieee double/binary64 to a double */
1702 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1703 ecb_function_ ecb_const double
1704 ecb_binary64_to_double (uint64_t x)
1705 {
1706 double r;
1707
1708 #if ECB_STDFP
1709 memcpy (&r, &x, 8);
1710 #else
1711 /* emulation, only works for normals and subnormals and +0 */
1712 int neg = x >> 63;
1713 int e = (x >> 52) & 0x7ffU;
1714
1715 x &= 0xfffffffffffffU;
1716
1717 if (e)
1718 x |= 0x10000000000000U;
1719 else
1720 e = 1;
1721
1722 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1723 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1724
1725 r = neg ? -r : r;
1726 #endif
1727
1728 return r;
1729 }
1730
1731 /* convert a float to ieee half/binary16 */
1732 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1733 ecb_function_ ecb_const uint16_t
1734 ecb_float_to_binary16 (float x)
1735 {
1736 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1737 }
1738
1739 /* convert an ieee half/binary16 to float */
1740 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1741 ecb_function_ ecb_const float
1742 ecb_binary16_to_float (uint16_t x)
1743 {
1744 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1745 }
1746
1747#endif
1748
1749#endif
1750
1751/* ECB.H END */
1752
1753#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1754/* if your architecture doesn't need memory fences, e.g. because it is
1755 * single-cpu/core, or if you use libev in a project that doesn't use libev
1756 * from multiple threads, then you can define ECB_NO_THREADS when compiling
1757 * libev, in which cases the memory fences become nops.
1758 * alternatively, you can remove this #error and link against libpthread,
1759 * which will then provide the memory fences.
1760 */
1761# error "memory fences not defined for your architecture, please report"
1762#endif
1763
1764#ifndef ECB_MEMORY_FENCE
1765# define ECB_MEMORY_FENCE do { } while (0)
1766# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1767# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1768#endif
1769
471#define inline_size static inline 1770#define inline_size ecb_inline
472 1771
473#if EV_FEATURE_CODE 1772#if EV_FEATURE_CODE
474# define inline_speed static inline 1773# define inline_speed ecb_inline
475#else 1774#else
476# define inline_speed static noinline 1775# define inline_speed ecb_noinline static
477#endif 1776#endif
1777
1778/*****************************************************************************/
1779/* raw syscall wrappers */
1780
1781#if EV_NEED_SYSCALL
1782
1783#include <sys/syscall.h>
1784
1785/*
1786 * define some syscall wrappers for common architectures
1787 * this is mostly for nice looks during debugging, not performance.
1788 * our syscalls return < 0, not == -1, on error. which is good
1789 * enough for linux aio.
1790 * TODO: arm is also common nowadays, maybe even mips and x86
1791 * TODO: after implementing this, it suddenly looks like overkill, but its hard to remove...
1792 */
1793#if __GNUC__ && __linux && ECB_AMD64 && !EV_FEATURE_CODE
1794 /* the costly errno access probably kills this for size optimisation */
1795
1796 #define ev_syscall(nr,narg,arg1,arg2,arg3,arg4,arg5,arg6) \
1797 ({ \
1798 long res; \
1799 register unsigned long r6 __asm__ ("r9" ); \
1800 register unsigned long r5 __asm__ ("r8" ); \
1801 register unsigned long r4 __asm__ ("r10"); \
1802 register unsigned long r3 __asm__ ("rdx"); \
1803 register unsigned long r2 __asm__ ("rsi"); \
1804 register unsigned long r1 __asm__ ("rdi"); \
1805 if (narg >= 6) r6 = (unsigned long)(arg6); \
1806 if (narg >= 5) r5 = (unsigned long)(arg5); \
1807 if (narg >= 4) r4 = (unsigned long)(arg4); \
1808 if (narg >= 3) r3 = (unsigned long)(arg3); \
1809 if (narg >= 2) r2 = (unsigned long)(arg2); \
1810 if (narg >= 1) r1 = (unsigned long)(arg1); \
1811 __asm__ __volatile__ ( \
1812 "syscall\n\t" \
1813 : "=a" (res) \
1814 : "0" (nr), "r" (r1), "r" (r2), "r" (r3), "r" (r4), "r" (r5) \
1815 : "cc", "r11", "cx", "memory"); \
1816 errno = -res; \
1817 res; \
1818 })
1819
1820#endif
1821
1822#ifdef ev_syscall
1823 #define ev_syscall0(nr) ev_syscall (nr, 0, 0, 0, 0, 0, 0, 0)
1824 #define ev_syscall1(nr,arg1) ev_syscall (nr, 1, arg1, 0, 0, 0, 0, 0)
1825 #define ev_syscall2(nr,arg1,arg2) ev_syscall (nr, 2, arg1, arg2, 0, 0, 0, 0)
1826 #define ev_syscall3(nr,arg1,arg2,arg3) ev_syscall (nr, 3, arg1, arg2, arg3, 0, 0, 0)
1827 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) ev_syscall (nr, 3, arg1, arg2, arg3, arg4, 0, 0)
1828 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) ev_syscall (nr, 5, arg1, arg2, arg3, arg4, arg5, 0)
1829 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) ev_syscall (nr, 6, arg1, arg2, arg3, arg4, arg5,arg6)
1830#else
1831 #define ev_syscall0(nr) syscall (nr)
1832 #define ev_syscall1(nr,arg1) syscall (nr, arg1)
1833 #define ev_syscall2(nr,arg1,arg2) syscall (nr, arg1, arg2)
1834 #define ev_syscall3(nr,arg1,arg2,arg3) syscall (nr, arg1, arg2, arg3)
1835 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) syscall (nr, arg1, arg2, arg3, arg4)
1836 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) syscall (nr, arg1, arg2, arg3, arg4, arg5)
1837 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) syscall (nr, arg1, arg2, arg3, arg4, arg5,arg6)
1838#endif
1839
1840#endif
1841
1842/*****************************************************************************/
478 1843
479#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1844#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
480 1845
481#if EV_MINPRI == EV_MAXPRI 1846#if EV_MINPRI == EV_MAXPRI
482# define ABSPRI(w) (((W)w), 0) 1847# define ABSPRI(w) (((W)w), 0)
483#else 1848#else
484# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1849# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
485#endif 1850#endif
486 1851
487#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1852#define EMPTY /* required for microsofts broken pseudo-c compiler */
488#define EMPTY2(a,b) /* used to suppress some warnings */
489 1853
490typedef ev_watcher *W; 1854typedef ev_watcher *W;
491typedef ev_watcher_list *WL; 1855typedef ev_watcher_list *WL;
492typedef ev_watcher_time *WT; 1856typedef ev_watcher_time *WT;
493 1857
494#define ev_active(w) ((W)(w))->active 1858#define ev_active(w) ((W)(w))->active
495#define ev_at(w) ((WT)(w))->at 1859#define ev_at(w) ((WT)(w))->at
496 1860
497#if EV_USE_REALTIME 1861#if EV_USE_REALTIME
498/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 1862/* sig_atomic_t is used to avoid per-thread variables or locking but still */
499/* giving it a reasonably high chance of working on typical architetcures */ 1863/* giving it a reasonably high chance of working on typical architectures */
500static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 1864static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
501#endif 1865#endif
502 1866
503#if EV_USE_MONOTONIC 1867#if EV_USE_MONOTONIC
504static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 1868static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
… …
518# include "ev_win32.c" 1882# include "ev_win32.c"
519#endif 1883#endif
520 1884
521/*****************************************************************************/ 1885/*****************************************************************************/
522 1886
1887#if EV_USE_LINUXAIO
1888# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
1889#endif
1890
1891/* define a suitable floor function (only used by periodics atm) */
1892
1893#if EV_USE_FLOOR
1894# include <math.h>
1895# define ev_floor(v) floor (v)
1896#else
1897
1898#include <float.h>
1899
1900/* a floor() replacement function, should be independent of ev_tstamp type */
1901ecb_noinline
1902static ev_tstamp
1903ev_floor (ev_tstamp v)
1904{
1905 /* the choice of shift factor is not terribly important */
1906#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1907 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1908#else
1909 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1910#endif
1911
1912 /* special treatment for negative arguments */
1913 if (ecb_expect_false (v < 0.))
1914 {
1915 ev_tstamp f = -ev_floor (-v);
1916
1917 return f - (f == v ? 0 : 1);
1918 }
1919
1920 /* argument too large for an unsigned long? then reduce it */
1921 if (ecb_expect_false (v >= shift))
1922 {
1923 ev_tstamp f;
1924
1925 if (v == v - 1.)
1926 return v; /* very large numbers are assumed to be integer */
1927
1928 f = shift * ev_floor (v * (1. / shift));
1929 return f + ev_floor (v - f);
1930 }
1931
1932 /* fits into an unsigned long */
1933 return (unsigned long)v;
1934}
1935
1936#endif
1937
1938/*****************************************************************************/
1939
1940#ifdef __linux
1941# include <sys/utsname.h>
1942#endif
1943
1944ecb_noinline ecb_cold
1945static unsigned int
1946ev_linux_version (void)
1947{
1948#ifdef __linux
1949 unsigned int v = 0;
1950 struct utsname buf;
1951 int i;
1952 char *p = buf.release;
1953
1954 if (uname (&buf))
1955 return 0;
1956
1957 for (i = 3+1; --i; )
1958 {
1959 unsigned int c = 0;
1960
1961 for (;;)
1962 {
1963 if (*p >= '0' && *p <= '9')
1964 c = c * 10 + *p++ - '0';
1965 else
1966 {
1967 p += *p == '.';
1968 break;
1969 }
1970 }
1971
1972 v = (v << 8) | c;
1973 }
1974
1975 return v;
1976#else
1977 return 0;
1978#endif
1979}
1980
1981/*****************************************************************************/
1982
523#if EV_AVOID_STDIO 1983#if EV_AVOID_STDIO
524static void noinline 1984ecb_noinline ecb_cold
1985static void
525ev_printerr (const char *msg) 1986ev_printerr (const char *msg)
526{ 1987{
527 write (STDERR_FILENO, msg, strlen (msg)); 1988 write (STDERR_FILENO, msg, strlen (msg));
528} 1989}
529#endif 1990#endif
530 1991
531static void (*syserr_cb)(const char *msg); 1992static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
532 1993
1994ecb_cold
533void 1995void
534ev_set_syserr_cb (void (*cb)(const char *msg)) 1996ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
535{ 1997{
536 syserr_cb = cb; 1998 syserr_cb = cb;
537} 1999}
538 2000
539static void noinline 2001ecb_noinline ecb_cold
2002static void
540ev_syserr (const char *msg) 2003ev_syserr (const char *msg)
541{ 2004{
542 if (!msg) 2005 if (!msg)
543 msg = "(libev) system error"; 2006 msg = "(libev) system error";
544 2007
545 if (syserr_cb) 2008 if (syserr_cb)
546 syserr_cb (msg); 2009 syserr_cb (msg);
547 else 2010 else
548 { 2011 {
549#if EV_AVOID_STDIO 2012#if EV_AVOID_STDIO
550 const char *err = strerror (errno);
551
552 ev_printerr (msg); 2013 ev_printerr (msg);
553 ev_printerr (": "); 2014 ev_printerr (": ");
554 ev_printerr (err); 2015 ev_printerr (strerror (errno));
555 ev_printerr ("\n"); 2016 ev_printerr ("\n");
556#else 2017#else
557 perror (msg); 2018 perror (msg);
558#endif 2019#endif
559 abort (); 2020 abort ();
560 } 2021 }
561} 2022}
562 2023
563static void * 2024static void *
564ev_realloc_emul (void *ptr, long size) 2025ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
565{ 2026{
566#if __GLIBC__
567 return realloc (ptr, size);
568#else
569 /* some systems, notably openbsd and darwin, fail to properly 2027 /* some systems, notably openbsd and darwin, fail to properly
570 * implement realloc (x, 0) (as required by both ansi c-89 and 2028 * implement realloc (x, 0) (as required by both ansi c-89 and
571 * the single unix specification, so work around them here. 2029 * the single unix specification, so work around them here.
2030 * recently, also (at least) fedora and debian started breaking it,
2031 * despite documenting it otherwise.
572 */ 2032 */
573 2033
574 if (size) 2034 if (size)
575 return realloc (ptr, size); 2035 return realloc (ptr, size);
576 2036
577 free (ptr); 2037 free (ptr);
578 return 0; 2038 return 0;
579#endif
580} 2039}
581 2040
582static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 2041static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
583 2042
2043ecb_cold
584void 2044void
585ev_set_allocator (void *(*cb)(void *ptr, long size)) 2045ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
586{ 2046{
587 alloc = cb; 2047 alloc = cb;
588} 2048}
589 2049
590inline_speed void * 2050inline_speed void *
… …
593 ptr = alloc (ptr, size); 2053 ptr = alloc (ptr, size);
594 2054
595 if (!ptr && size) 2055 if (!ptr && size)
596 { 2056 {
597#if EV_AVOID_STDIO 2057#if EV_AVOID_STDIO
598 ev_printerr ("libev: memory allocation failed, aborting.\n"); 2058 ev_printerr ("(libev) memory allocation failed, aborting.\n");
599#else 2059#else
600 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 2060 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
601#endif 2061#endif
602 abort (); 2062 abort ();
603 } 2063 }
604 2064
605 return ptr; 2065 return ptr;
… …
617typedef struct 2077typedef struct
618{ 2078{
619 WL head; 2079 WL head;
620 unsigned char events; /* the events watched for */ 2080 unsigned char events; /* the events watched for */
621 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */ 2081 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
622 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 2082 unsigned char emask; /* some backends store the actual kernel mask in here */
623 unsigned char unused; 2083 unsigned char eflags; /* flags field for use by backends */
624#if EV_USE_EPOLL 2084#if EV_USE_EPOLL
625 unsigned int egen; /* generation counter to counter epoll bugs */ 2085 unsigned int egen; /* generation counter to counter epoll bugs */
626#endif 2086#endif
627#if EV_SELECT_IS_WINSOCKET 2087#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
628 SOCKET handle; 2088 SOCKET handle;
2089#endif
2090#if EV_USE_IOCP
2091 OVERLAPPED or, ow;
629#endif 2092#endif
630} ANFD; 2093} ANFD;
631 2094
632/* stores the pending event set for a given watcher */ 2095/* stores the pending event set for a given watcher */
633typedef struct 2096typedef struct
… …
675 #undef VAR 2138 #undef VAR
676 }; 2139 };
677 #include "ev_wrap.h" 2140 #include "ev_wrap.h"
678 2141
679 static struct ev_loop default_loop_struct; 2142 static struct ev_loop default_loop_struct;
680 struct ev_loop *ev_default_loop_ptr; 2143 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
681 2144
682#else 2145#else
683 2146
684 ev_tstamp ev_rt_now; 2147 EV_API_DECL ev_tstamp ev_rt_now = EV_TS_CONST (0.); /* needs to be initialised to make it a definition despite extern */
685 #define VAR(name,decl) static decl; 2148 #define VAR(name,decl) static decl;
686 #include "ev_vars.h" 2149 #include "ev_vars.h"
687 #undef VAR 2150 #undef VAR
688 2151
689 static int ev_default_loop_ptr; 2152 static int ev_default_loop_ptr;
690 2153
691#endif 2154#endif
692 2155
693#if EV_FEATURE_API 2156#if EV_FEATURE_API
694# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 2157# define EV_RELEASE_CB if (ecb_expect_false (release_cb)) release_cb (EV_A)
695# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 2158# define EV_ACQUIRE_CB if (ecb_expect_false (acquire_cb)) acquire_cb (EV_A)
696# define EV_INVOKE_PENDING invoke_cb (EV_A) 2159# define EV_INVOKE_PENDING invoke_cb (EV_A)
697#else 2160#else
698# define EV_RELEASE_CB (void)0 2161# define EV_RELEASE_CB (void)0
699# define EV_ACQUIRE_CB (void)0 2162# define EV_ACQUIRE_CB (void)0
700# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 2163# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
701#endif 2164#endif
702 2165
703#define EVUNLOOP_RECURSE 0x80 2166#define EVBREAK_RECURSE 0x80
704 2167
705/*****************************************************************************/ 2168/*****************************************************************************/
706 2169
707#ifndef EV_HAVE_EV_TIME 2170#ifndef EV_HAVE_EV_TIME
708ev_tstamp 2171ev_tstamp
709ev_time (void) 2172ev_time (void) EV_NOEXCEPT
710{ 2173{
711#if EV_USE_REALTIME 2174#if EV_USE_REALTIME
712 if (expect_true (have_realtime)) 2175 if (ecb_expect_true (have_realtime))
713 { 2176 {
714 struct timespec ts; 2177 struct timespec ts;
715 clock_gettime (CLOCK_REALTIME, &ts); 2178 clock_gettime (CLOCK_REALTIME, &ts);
716 return ts.tv_sec + ts.tv_nsec * 1e-9; 2179 return EV_TS_GET (ts);
717 } 2180 }
718#endif 2181#endif
719 2182
2183 {
720 struct timeval tv; 2184 struct timeval tv;
721 gettimeofday (&tv, 0); 2185 gettimeofday (&tv, 0);
722 return tv.tv_sec + tv.tv_usec * 1e-6; 2186 return EV_TV_GET (tv);
2187 }
723} 2188}
724#endif 2189#endif
725 2190
726inline_size ev_tstamp 2191inline_size ev_tstamp
727get_clock (void) 2192get_clock (void)
728{ 2193{
729#if EV_USE_MONOTONIC 2194#if EV_USE_MONOTONIC
730 if (expect_true (have_monotonic)) 2195 if (ecb_expect_true (have_monotonic))
731 { 2196 {
732 struct timespec ts; 2197 struct timespec ts;
733 clock_gettime (CLOCK_MONOTONIC, &ts); 2198 clock_gettime (CLOCK_MONOTONIC, &ts);
734 return ts.tv_sec + ts.tv_nsec * 1e-9; 2199 return EV_TS_GET (ts);
735 } 2200 }
736#endif 2201#endif
737 2202
738 return ev_time (); 2203 return ev_time ();
739} 2204}
740 2205
741#if EV_MULTIPLICITY 2206#if EV_MULTIPLICITY
742ev_tstamp 2207ev_tstamp
743ev_now (EV_P) 2208ev_now (EV_P) EV_NOEXCEPT
744{ 2209{
745 return ev_rt_now; 2210 return ev_rt_now;
746} 2211}
747#endif 2212#endif
748 2213
749void 2214void
750ev_sleep (ev_tstamp delay) 2215ev_sleep (ev_tstamp delay) EV_NOEXCEPT
751{ 2216{
752 if (delay > 0.) 2217 if (delay > EV_TS_CONST (0.))
753 { 2218 {
754#if EV_USE_NANOSLEEP 2219#if EV_USE_NANOSLEEP
755 struct timespec ts; 2220 struct timespec ts;
756 2221
757 ts.tv_sec = (time_t)delay; 2222 EV_TS_SET (ts, delay);
758 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
759
760 nanosleep (&ts, 0); 2223 nanosleep (&ts, 0);
761#elif defined(_WIN32) 2224#elif defined _WIN32
2225 /* maybe this should round up, as ms is very low resolution */
2226 /* compared to select (µs) or nanosleep (ns) */
762 Sleep ((unsigned long)(delay * 1e3)); 2227 Sleep ((unsigned long)(EV_TS_TO_MSEC (delay)));
763#else 2228#else
764 struct timeval tv; 2229 struct timeval tv;
765
766 tv.tv_sec = (time_t)delay;
767 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
768 2230
769 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 2231 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
770 /* something not guaranteed by newer posix versions, but guaranteed */ 2232 /* something not guaranteed by newer posix versions, but guaranteed */
771 /* by older ones */ 2233 /* by older ones */
2234 EV_TV_SET (tv, delay);
772 select (0, 0, 0, 0, &tv); 2235 select (0, 0, 0, 0, &tv);
773#endif 2236#endif
774 } 2237 }
775} 2238}
776 2239
777/*****************************************************************************/ 2240/*****************************************************************************/
778 2241
779#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 2242#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
780 2243
781/* find a suitable new size for the given array, */ 2244/* find a suitable new size for the given array, */
782/* hopefully by rounding to a ncie-to-malloc size */ 2245/* hopefully by rounding to a nice-to-malloc size */
783inline_size int 2246inline_size int
784array_nextsize (int elem, int cur, int cnt) 2247array_nextsize (int elem, int cur, int cnt)
785{ 2248{
786 int ncur = cur + 1; 2249 int ncur = cur + 1;
787 2250
788 do 2251 do
789 ncur <<= 1; 2252 ncur <<= 1;
790 while (cnt > ncur); 2253 while (cnt > ncur);
791 2254
792 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 2255 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
793 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 2256 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
794 { 2257 {
795 ncur *= elem; 2258 ncur *= elem;
796 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 2259 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
797 ncur = ncur - sizeof (void *) * 4; 2260 ncur = ncur - sizeof (void *) * 4;
… …
799 } 2262 }
800 2263
801 return ncur; 2264 return ncur;
802} 2265}
803 2266
804static noinline void * 2267ecb_noinline ecb_cold
2268static void *
805array_realloc (int elem, void *base, int *cur, int cnt) 2269array_realloc (int elem, void *base, int *cur, int cnt)
806{ 2270{
807 *cur = array_nextsize (elem, *cur, cnt); 2271 *cur = array_nextsize (elem, *cur, cnt);
808 return ev_realloc (base, elem * *cur); 2272 return ev_realloc (base, elem * *cur);
809} 2273}
810 2274
2275#define array_needsize_noinit(base,offset,count)
2276
811#define array_init_zero(base,count) \ 2277#define array_needsize_zerofill(base,offset,count) \
812 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 2278 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
813 2279
814#define array_needsize(type,base,cur,cnt,init) \ 2280#define array_needsize(type,base,cur,cnt,init) \
815 if (expect_false ((cnt) > (cur))) \ 2281 if (ecb_expect_false ((cnt) > (cur))) \
816 { \ 2282 { \
817 int ocur_ = (cur); \ 2283 ecb_unused int ocur_ = (cur); \
818 (base) = (type *)array_realloc \ 2284 (base) = (type *)array_realloc \
819 (sizeof (type), (base), &(cur), (cnt)); \ 2285 (sizeof (type), (base), &(cur), (cnt)); \
820 init ((base) + (ocur_), (cur) - ocur_); \ 2286 init ((base), ocur_, ((cur) - ocur_)); \
821 } 2287 }
822 2288
823#if 0 2289#if 0
824#define array_slim(type,stem) \ 2290#define array_slim(type,stem) \
825 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2291 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
… …
834 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 2300 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
835 2301
836/*****************************************************************************/ 2302/*****************************************************************************/
837 2303
838/* dummy callback for pending events */ 2304/* dummy callback for pending events */
839static void noinline 2305ecb_noinline
2306static void
840pendingcb (EV_P_ ev_prepare *w, int revents) 2307pendingcb (EV_P_ ev_prepare *w, int revents)
841{ 2308{
842} 2309}
843 2310
844void noinline 2311ecb_noinline
2312void
845ev_feed_event (EV_P_ void *w, int revents) 2313ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
846{ 2314{
847 W w_ = (W)w; 2315 W w_ = (W)w;
848 int pri = ABSPRI (w_); 2316 int pri = ABSPRI (w_);
849 2317
850 if (expect_false (w_->pending)) 2318 if (ecb_expect_false (w_->pending))
851 pendings [pri][w_->pending - 1].events |= revents; 2319 pendings [pri][w_->pending - 1].events |= revents;
852 else 2320 else
853 { 2321 {
854 w_->pending = ++pendingcnt [pri]; 2322 w_->pending = ++pendingcnt [pri];
855 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2323 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
856 pendings [pri][w_->pending - 1].w = w_; 2324 pendings [pri][w_->pending - 1].w = w_;
857 pendings [pri][w_->pending - 1].events = revents; 2325 pendings [pri][w_->pending - 1].events = revents;
858 } 2326 }
2327
2328 pendingpri = NUMPRI - 1;
859} 2329}
860 2330
861inline_speed void 2331inline_speed void
862feed_reverse (EV_P_ W w) 2332feed_reverse (EV_P_ W w)
863{ 2333{
864 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2334 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
865 rfeeds [rfeedcnt++] = w; 2335 rfeeds [rfeedcnt++] = w;
866} 2336}
867 2337
868inline_size void 2338inline_size void
869feed_reverse_done (EV_P_ int revents) 2339feed_reverse_done (EV_P_ int revents)
… …
904inline_speed void 2374inline_speed void
905fd_event (EV_P_ int fd, int revents) 2375fd_event (EV_P_ int fd, int revents)
906{ 2376{
907 ANFD *anfd = anfds + fd; 2377 ANFD *anfd = anfds + fd;
908 2378
909 if (expect_true (!anfd->reify)) 2379 if (ecb_expect_true (!anfd->reify))
910 fd_event_nocheck (EV_A_ fd, revents); 2380 fd_event_nocheck (EV_A_ fd, revents);
911} 2381}
912 2382
913void 2383void
914ev_feed_fd_event (EV_P_ int fd, int revents) 2384ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
915{ 2385{
916 if (fd >= 0 && fd < anfdmax) 2386 if (fd >= 0 && fd < anfdmax)
917 fd_event_nocheck (EV_A_ fd, revents); 2387 fd_event_nocheck (EV_A_ fd, revents);
918} 2388}
919 2389
… …
922inline_size void 2392inline_size void
923fd_reify (EV_P) 2393fd_reify (EV_P)
924{ 2394{
925 int i; 2395 int i;
926 2396
2397 /* most backends do not modify the fdchanges list in backend_modfiy.
2398 * except io_uring, which has fixed-size buffers which might force us
2399 * to handle events in backend_modify, causing fdchanges to be amended,
2400 * which could result in an endless loop.
2401 * to avoid this, we do not dynamically handle fds that were added
2402 * during fd_reify. that means that for those backends, fdchangecnt
2403 * might be non-zero during poll, which must cause them to not block.
2404 * to not put too much of a burden on other backends, this detail
2405 * needs to be handled in the backend.
2406 */
2407 int changecnt = fdchangecnt;
2408
2409#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
927 for (i = 0; i < fdchangecnt; ++i) 2410 for (i = 0; i < changecnt; ++i)
2411 {
2412 int fd = fdchanges [i];
2413 ANFD *anfd = anfds + fd;
2414
2415 if (anfd->reify & EV__IOFDSET && anfd->head)
2416 {
2417 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
2418
2419 if (handle != anfd->handle)
2420 {
2421 unsigned long arg;
2422
2423 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
2424
2425 /* handle changed, but fd didn't - we need to do it in two steps */
2426 backend_modify (EV_A_ fd, anfd->events, 0);
2427 anfd->events = 0;
2428 anfd->handle = handle;
2429 }
2430 }
2431 }
2432#endif
2433
2434 for (i = 0; i < changecnt; ++i)
928 { 2435 {
929 int fd = fdchanges [i]; 2436 int fd = fdchanges [i];
930 ANFD *anfd = anfds + fd; 2437 ANFD *anfd = anfds + fd;
931 ev_io *w; 2438 ev_io *w;
932 2439
933 unsigned char events = 0; 2440 unsigned char o_events = anfd->events;
2441 unsigned char o_reify = anfd->reify;
934 2442
935 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2443 anfd->reify = 0;
936 events |= (unsigned char)w->events;
937 2444
938#if EV_SELECT_IS_WINSOCKET 2445 /*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
939 if (events)
940 { 2446 {
941 unsigned long arg; 2447 anfd->events = 0;
942 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 2448
943 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 2449 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
2450 anfd->events |= (unsigned char)w->events;
2451
2452 if (o_events != anfd->events)
2453 o_reify = EV__IOFDSET; /* actually |= */
944 } 2454 }
945#endif
946 2455
947 { 2456 if (o_reify & EV__IOFDSET)
948 unsigned char o_events = anfd->events;
949 unsigned char o_reify = anfd->reify;
950
951 anfd->reify = 0;
952 anfd->events = events;
953
954 if (o_events != events || o_reify & EV__IOFDSET)
955 backend_modify (EV_A_ fd, o_events, events); 2457 backend_modify (EV_A_ fd, o_events, anfd->events);
956 } 2458 }
957 }
958 2459
2460 /* normally, fdchangecnt hasn't changed. if it has, then new fds have been added.
2461 * this is a rare case (see beginning comment in this function), so we copy them to the
2462 * front and hope the backend handles this case.
2463 */
2464 if (ecb_expect_false (fdchangecnt != changecnt))
2465 memmove (fdchanges, fdchanges + changecnt, (fdchangecnt - changecnt) * sizeof (*fdchanges));
2466
959 fdchangecnt = 0; 2467 fdchangecnt -= changecnt;
960} 2468}
961 2469
962/* something about the given fd changed */ 2470/* something about the given fd changed */
963inline_size void 2471inline_size
2472void
964fd_change (EV_P_ int fd, int flags) 2473fd_change (EV_P_ int fd, int flags)
965{ 2474{
966 unsigned char reify = anfds [fd].reify; 2475 unsigned char reify = anfds [fd].reify;
967 anfds [fd].reify |= flags; 2476 anfds [fd].reify = reify | flags;
968 2477
969 if (expect_true (!reify)) 2478 if (ecb_expect_true (!reify))
970 { 2479 {
971 ++fdchangecnt; 2480 ++fdchangecnt;
972 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2481 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
973 fdchanges [fdchangecnt - 1] = fd; 2482 fdchanges [fdchangecnt - 1] = fd;
974 } 2483 }
975} 2484}
976 2485
977/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2486/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
978inline_speed void 2487inline_speed ecb_cold void
979fd_kill (EV_P_ int fd) 2488fd_kill (EV_P_ int fd)
980{ 2489{
981 ev_io *w; 2490 ev_io *w;
982 2491
983 while ((w = (ev_io *)anfds [fd].head)) 2492 while ((w = (ev_io *)anfds [fd].head))
… …
986 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2495 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
987 } 2496 }
988} 2497}
989 2498
990/* check whether the given fd is actually valid, for error recovery */ 2499/* check whether the given fd is actually valid, for error recovery */
991inline_size int 2500inline_size ecb_cold int
992fd_valid (int fd) 2501fd_valid (int fd)
993{ 2502{
994#ifdef _WIN32 2503#ifdef _WIN32
995 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2504 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
996#else 2505#else
997 return fcntl (fd, F_GETFD) != -1; 2506 return fcntl (fd, F_GETFD) != -1;
998#endif 2507#endif
999} 2508}
1000 2509
1001/* called on EBADF to verify fds */ 2510/* called on EBADF to verify fds */
1002static void noinline 2511ecb_noinline ecb_cold
2512static void
1003fd_ebadf (EV_P) 2513fd_ebadf (EV_P)
1004{ 2514{
1005 int fd; 2515 int fd;
1006 2516
1007 for (fd = 0; fd < anfdmax; ++fd) 2517 for (fd = 0; fd < anfdmax; ++fd)
… …
1009 if (!fd_valid (fd) && errno == EBADF) 2519 if (!fd_valid (fd) && errno == EBADF)
1010 fd_kill (EV_A_ fd); 2520 fd_kill (EV_A_ fd);
1011} 2521}
1012 2522
1013/* called on ENOMEM in select/poll to kill some fds and retry */ 2523/* called on ENOMEM in select/poll to kill some fds and retry */
1014static void noinline 2524ecb_noinline ecb_cold
2525static void
1015fd_enomem (EV_P) 2526fd_enomem (EV_P)
1016{ 2527{
1017 int fd; 2528 int fd;
1018 2529
1019 for (fd = anfdmax; fd--; ) 2530 for (fd = anfdmax; fd--; )
… …
1023 break; 2534 break;
1024 } 2535 }
1025} 2536}
1026 2537
1027/* usually called after fork if backend needs to re-arm all fds from scratch */ 2538/* usually called after fork if backend needs to re-arm all fds from scratch */
1028static void noinline 2539ecb_noinline
2540static void
1029fd_rearm_all (EV_P) 2541fd_rearm_all (EV_P)
1030{ 2542{
1031 int fd; 2543 int fd;
1032 2544
1033 for (fd = 0; fd < anfdmax; ++fd) 2545 for (fd = 0; fd < anfdmax; ++fd)
… …
1054} 2566}
1055 2567
1056/*****************************************************************************/ 2568/*****************************************************************************/
1057 2569
1058/* 2570/*
1059 * the heap functions want a real array index. array index 0 uis guaranteed to not 2571 * the heap functions want a real array index. array index 0 is guaranteed to not
1060 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 2572 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
1061 * the branching factor of the d-tree. 2573 * the branching factor of the d-tree.
1062 */ 2574 */
1063 2575
1064/* 2576/*
… …
1086 ev_tstamp minat; 2598 ev_tstamp minat;
1087 ANHE *minpos; 2599 ANHE *minpos;
1088 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; 2600 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
1089 2601
1090 /* find minimum child */ 2602 /* find minimum child */
1091 if (expect_true (pos + DHEAP - 1 < E)) 2603 if (ecb_expect_true (pos + DHEAP - 1 < E))
1092 { 2604 {
1093 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2605 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1094 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2606 if ( minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1095 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2607 if ( minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1096 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2608 if ( minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1097 } 2609 }
1098 else if (pos < E) 2610 else if (pos < E)
1099 { 2611 {
1100 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2612 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1101 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2613 if (pos + 1 < E && minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1102 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2614 if (pos + 2 < E && minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1103 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2615 if (pos + 3 < E && minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1104 } 2616 }
1105 else 2617 else
1106 break; 2618 break;
1107 2619
1108 if (ANHE_at (he) <= minat) 2620 if (ANHE_at (he) <= minat)
… …
1116 2628
1117 heap [k] = he; 2629 heap [k] = he;
1118 ev_active (ANHE_w (he)) = k; 2630 ev_active (ANHE_w (he)) = k;
1119} 2631}
1120 2632
1121#else /* 4HEAP */ 2633#else /* not 4HEAP */
1122 2634
1123#define HEAP0 1 2635#define HEAP0 1
1124#define HPARENT(k) ((k) >> 1) 2636#define HPARENT(k) ((k) >> 1)
1125#define UPHEAP_DONE(p,k) (!(p)) 2637#define UPHEAP_DONE(p,k) (!(p))
1126 2638
… …
1198 upheap (heap, i + HEAP0); 2710 upheap (heap, i + HEAP0);
1199} 2711}
1200 2712
1201/*****************************************************************************/ 2713/*****************************************************************************/
1202 2714
1203/* associate signal watchers to a signal signal */ 2715/* associate signal watchers to a signal */
1204typedef struct 2716typedef struct
1205{ 2717{
1206 EV_ATOMIC_T pending; 2718 EV_ATOMIC_T pending;
1207#if EV_MULTIPLICITY 2719#if EV_MULTIPLICITY
1208 EV_P; 2720 EV_P;
… …
1214 2726
1215/*****************************************************************************/ 2727/*****************************************************************************/
1216 2728
1217#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2729#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1218 2730
1219static void noinline 2731ecb_noinline ecb_cold
2732static void
1220evpipe_init (EV_P) 2733evpipe_init (EV_P)
1221{ 2734{
1222 if (!ev_is_active (&pipe_w)) 2735 if (!ev_is_active (&pipe_w))
1223 { 2736 {
2737 int fds [2];
2738
1224# if EV_USE_EVENTFD 2739# if EV_USE_EVENTFD
2740 fds [0] = -1;
1225 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2741 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1226 if (evfd < 0 && errno == EINVAL) 2742 if (fds [1] < 0 && errno == EINVAL)
1227 evfd = eventfd (0, 0); 2743 fds [1] = eventfd (0, 0);
1228 2744
1229 if (evfd >= 0) 2745 if (fds [1] < 0)
2746# endif
1230 { 2747 {
2748 while (pipe (fds))
2749 ev_syserr ("(libev) error creating signal/async pipe");
2750
2751 fd_intern (fds [0]);
2752 }
2753
1231 evpipe [0] = -1; 2754 evpipe [0] = fds [0];
1232 fd_intern (evfd); /* doing it twice doesn't hurt */ 2755
1233 ev_io_set (&pipe_w, evfd, EV_READ); 2756 if (evpipe [1] < 0)
2757 evpipe [1] = fds [1]; /* first call, set write fd */
2758 else
2759 {
2760 /* on subsequent calls, do not change evpipe [1] */
2761 /* so that evpipe_write can always rely on its value. */
2762 /* this branch does not do anything sensible on windows, */
2763 /* so must not be executed on windows */
2764
2765 dup2 (fds [1], evpipe [1]);
2766 close (fds [1]);
2767 }
2768
2769 fd_intern (evpipe [1]);
2770
2771 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2772 ev_io_start (EV_A_ &pipe_w);
2773 ev_unref (EV_A); /* watcher should not keep loop alive */
2774 }
2775}
2776
2777inline_speed void
2778evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2779{
2780 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2781
2782 if (ecb_expect_true (*flag))
2783 return;
2784
2785 *flag = 1;
2786 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2787
2788 pipe_write_skipped = 1;
2789
2790 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2791
2792 if (pipe_write_wanted)
2793 {
2794 int old_errno;
2795
2796 pipe_write_skipped = 0;
2797 ECB_MEMORY_FENCE_RELEASE;
2798
2799 old_errno = errno; /* save errno because write will clobber it */
2800
2801#if EV_USE_EVENTFD
2802 if (evpipe [0] < 0)
2803 {
2804 uint64_t counter = 1;
2805 write (evpipe [1], &counter, sizeof (uint64_t));
1234 } 2806 }
1235 else 2807 else
1236# endif 2808#endif
1237 { 2809 {
1238 while (pipe (evpipe)) 2810#ifdef _WIN32
1239 ev_syserr ("(libev) error creating signal/async pipe"); 2811 WSABUF buf;
1240 2812 DWORD sent;
1241 fd_intern (evpipe [0]); 2813 buf.buf = (char *)&buf;
1242 fd_intern (evpipe [1]); 2814 buf.len = 1;
1243 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2815 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2816#else
2817 write (evpipe [1], &(evpipe [1]), 1);
2818#endif
1244 } 2819 }
1245
1246 ev_io_start (EV_A_ &pipe_w);
1247 ev_unref (EV_A); /* watcher should not keep loop alive */
1248 }
1249}
1250
1251inline_size void
1252evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1253{
1254 if (!*flag)
1255 {
1256 int old_errno = errno; /* save errno because write might clobber it */
1257 char dummy;
1258
1259 *flag = 1;
1260
1261#if EV_USE_EVENTFD
1262 if (evfd >= 0)
1263 {
1264 uint64_t counter = 1;
1265 write (evfd, &counter, sizeof (uint64_t));
1266 }
1267 else
1268#endif
1269 write (evpipe [1], &dummy, 1);
1270 2820
1271 errno = old_errno; 2821 errno = old_errno;
1272 } 2822 }
1273} 2823}
1274 2824
… …
1277static void 2827static void
1278pipecb (EV_P_ ev_io *iow, int revents) 2828pipecb (EV_P_ ev_io *iow, int revents)
1279{ 2829{
1280 int i; 2830 int i;
1281 2831
2832 if (revents & EV_READ)
2833 {
1282#if EV_USE_EVENTFD 2834#if EV_USE_EVENTFD
1283 if (evfd >= 0) 2835 if (evpipe [0] < 0)
1284 { 2836 {
1285 uint64_t counter; 2837 uint64_t counter;
1286 read (evfd, &counter, sizeof (uint64_t)); 2838 read (evpipe [1], &counter, sizeof (uint64_t));
1287 } 2839 }
1288 else 2840 else
1289#endif 2841#endif
1290 { 2842 {
1291 char dummy; 2843 char dummy[4];
2844#ifdef _WIN32
2845 WSABUF buf;
2846 DWORD recvd;
2847 DWORD flags = 0;
2848 buf.buf = dummy;
2849 buf.len = sizeof (dummy);
2850 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2851#else
1292 read (evpipe [0], &dummy, 1); 2852 read (evpipe [0], &dummy, sizeof (dummy));
2853#endif
2854 }
1293 } 2855 }
1294 2856
2857 pipe_write_skipped = 0;
2858
2859 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2860
2861#if EV_SIGNAL_ENABLE
1295 if (sig_pending) 2862 if (sig_pending)
1296 { 2863 {
1297 sig_pending = 0; 2864 sig_pending = 0;
1298 2865
2866 ECB_MEMORY_FENCE;
2867
1299 for (i = EV_NSIG - 1; i--; ) 2868 for (i = EV_NSIG - 1; i--; )
1300 if (expect_false (signals [i].pending)) 2869 if (ecb_expect_false (signals [i].pending))
1301 ev_feed_signal_event (EV_A_ i + 1); 2870 ev_feed_signal_event (EV_A_ i + 1);
1302 } 2871 }
2872#endif
1303 2873
1304#if EV_ASYNC_ENABLE 2874#if EV_ASYNC_ENABLE
1305 if (async_pending) 2875 if (async_pending)
1306 { 2876 {
1307 async_pending = 0; 2877 async_pending = 0;
2878
2879 ECB_MEMORY_FENCE;
1308 2880
1309 for (i = asynccnt; i--; ) 2881 for (i = asynccnt; i--; )
1310 if (asyncs [i]->sent) 2882 if (asyncs [i]->sent)
1311 { 2883 {
1312 asyncs [i]->sent = 0; 2884 asyncs [i]->sent = 0;
2885 ECB_MEMORY_FENCE_RELEASE;
1313 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2886 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1314 } 2887 }
1315 } 2888 }
1316#endif 2889#endif
1317} 2890}
1318 2891
1319/*****************************************************************************/ 2892/*****************************************************************************/
1320 2893
2894void
2895ev_feed_signal (int signum) EV_NOEXCEPT
2896{
2897#if EV_MULTIPLICITY
2898 EV_P;
2899 ECB_MEMORY_FENCE_ACQUIRE;
2900 EV_A = signals [signum - 1].loop;
2901
2902 if (!EV_A)
2903 return;
2904#endif
2905
2906 signals [signum - 1].pending = 1;
2907 evpipe_write (EV_A_ &sig_pending);
2908}
2909
1321static void 2910static void
1322ev_sighandler (int signum) 2911ev_sighandler (int signum)
1323{ 2912{
1324#if EV_MULTIPLICITY
1325 EV_P = signals [signum - 1].loop;
1326#endif
1327
1328#ifdef _WIN32 2913#ifdef _WIN32
1329 signal (signum, ev_sighandler); 2914 signal (signum, ev_sighandler);
1330#endif 2915#endif
1331 2916
1332 signals [signum - 1].pending = 1; 2917 ev_feed_signal (signum);
1333 evpipe_write (EV_A_ &sig_pending);
1334} 2918}
1335 2919
1336void noinline 2920ecb_noinline
2921void
1337ev_feed_signal_event (EV_P_ int signum) 2922ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
1338{ 2923{
1339 WL w; 2924 WL w;
1340 2925
1341 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2926 if (ecb_expect_false (signum <= 0 || signum >= EV_NSIG))
1342 return; 2927 return;
1343 2928
1344 --signum; 2929 --signum;
1345 2930
1346#if EV_MULTIPLICITY 2931#if EV_MULTIPLICITY
1347 /* it is permissible to try to feed a signal to the wrong loop */ 2932 /* it is permissible to try to feed a signal to the wrong loop */
1348 /* or, likely more useful, feeding a signal nobody is waiting for */ 2933 /* or, likely more useful, feeding a signal nobody is waiting for */
1349 2934
1350 if (expect_false (signals [signum].loop != EV_A)) 2935 if (ecb_expect_false (signals [signum].loop != EV_A))
1351 return; 2936 return;
1352#endif 2937#endif
1353 2938
1354 signals [signum].pending = 0; 2939 signals [signum].pending = 0;
2940 ECB_MEMORY_FENCE_RELEASE;
1355 2941
1356 for (w = signals [signum].head; w; w = w->next) 2942 for (w = signals [signum].head; w; w = w->next)
1357 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2943 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1358} 2944}
1359 2945
… …
1438 3024
1439#endif 3025#endif
1440 3026
1441/*****************************************************************************/ 3027/*****************************************************************************/
1442 3028
3029#if EV_USE_TIMERFD
3030
3031static void periodics_reschedule (EV_P);
3032
3033static void
3034timerfdcb (EV_P_ ev_io *iow, int revents)
3035{
3036 struct itimerspec its = { 0 };
3037
3038 its.it_value.tv_sec = ev_rt_now + (int)MAX_BLOCKTIME2;
3039 timerfd_settime (timerfd, TFD_TIMER_ABSTIME | TFD_TIMER_CANCEL_ON_SET, &its, 0);
3040
3041 ev_rt_now = ev_time ();
3042 /* periodics_reschedule only needs ev_rt_now */
3043 /* but maybe in the future we want the full treatment. */
3044 /*
3045 now_floor = EV_TS_CONST (0.);
3046 time_update (EV_A_ EV_TSTAMP_HUGE);
3047 */
3048#if EV_PERIODIC_ENABLE
3049 periodics_reschedule (EV_A);
3050#endif
3051}
3052
3053ecb_noinline ecb_cold
3054static void
3055evtimerfd_init (EV_P)
3056{
3057 if (!ev_is_active (&timerfd_w))
3058 {
3059 timerfd = timerfd_create (CLOCK_REALTIME, TFD_NONBLOCK | TFD_CLOEXEC);
3060
3061 if (timerfd >= 0)
3062 {
3063 fd_intern (timerfd); /* just to be sure */
3064
3065 ev_io_init (&timerfd_w, timerfdcb, timerfd, EV_READ);
3066 ev_set_priority (&timerfd_w, EV_MINPRI);
3067 ev_io_start (EV_A_ &timerfd_w);
3068 ev_unref (EV_A); /* watcher should not keep loop alive */
3069
3070 /* (re-) arm timer */
3071 timerfdcb (EV_A_ 0, 0);
3072 }
3073 }
3074}
3075
3076#endif
3077
3078/*****************************************************************************/
3079
3080#if EV_USE_IOCP
3081# include "ev_iocp.c"
3082#endif
1443#if EV_USE_PORT 3083#if EV_USE_PORT
1444# include "ev_port.c" 3084# include "ev_port.c"
1445#endif 3085#endif
1446#if EV_USE_KQUEUE 3086#if EV_USE_KQUEUE
1447# include "ev_kqueue.c" 3087# include "ev_kqueue.c"
1448#endif 3088#endif
1449#if EV_USE_EPOLL 3089#if EV_USE_EPOLL
1450# include "ev_epoll.c" 3090# include "ev_epoll.c"
1451#endif 3091#endif
3092#if EV_USE_LINUXAIO
3093# include "ev_linuxaio.c"
3094#endif
3095#if EV_USE_IOURING
3096# include "ev_iouring.c"
3097#endif
1452#if EV_USE_POLL 3098#if EV_USE_POLL
1453# include "ev_poll.c" 3099# include "ev_poll.c"
1454#endif 3100#endif
1455#if EV_USE_SELECT 3101#if EV_USE_SELECT
1456# include "ev_select.c" 3102# include "ev_select.c"
1457#endif 3103#endif
1458 3104
1459int 3105ecb_cold int
1460ev_version_major (void) 3106ev_version_major (void) EV_NOEXCEPT
1461{ 3107{
1462 return EV_VERSION_MAJOR; 3108 return EV_VERSION_MAJOR;
1463} 3109}
1464 3110
1465int 3111ecb_cold int
1466ev_version_minor (void) 3112ev_version_minor (void) EV_NOEXCEPT
1467{ 3113{
1468 return EV_VERSION_MINOR; 3114 return EV_VERSION_MINOR;
1469} 3115}
1470 3116
1471/* return true if we are running with elevated privileges and should ignore env variables */ 3117/* return true if we are running with elevated privileges and should ignore env variables */
1472int inline_size 3118inline_size ecb_cold int
1473enable_secure (void) 3119enable_secure (void)
1474{ 3120{
1475#ifdef _WIN32 3121#ifdef _WIN32
1476 return 0; 3122 return 0;
1477#else 3123#else
1478 return getuid () != geteuid () 3124 return getuid () != geteuid ()
1479 || getgid () != getegid (); 3125 || getgid () != getegid ();
1480#endif 3126#endif
1481} 3127}
1482 3128
3129ecb_cold
1483unsigned int 3130unsigned int
1484ev_supported_backends (void) 3131ev_supported_backends (void) EV_NOEXCEPT
1485{ 3132{
1486 unsigned int flags = 0; 3133 unsigned int flags = 0;
1487 3134
1488 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 3135 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1489 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 3136 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
1490 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 3137 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
1491 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 3138 if (EV_USE_LINUXAIO ) flags |= EVBACKEND_LINUXAIO;
1492 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 3139 if (EV_USE_IOURING && ev_linux_version () >= 0x050601) flags |= EVBACKEND_IOURING; /* 5.6.1+ */
1493 3140 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
3141 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
3142
1494 return flags; 3143 return flags;
1495} 3144}
1496 3145
3146ecb_cold
1497unsigned int 3147unsigned int
1498ev_recommended_backends (void) 3148ev_recommended_backends (void) EV_NOEXCEPT
1499{ 3149{
1500 unsigned int flags = ev_supported_backends (); 3150 unsigned int flags = ev_supported_backends ();
1501 3151
1502#ifndef __NetBSD__ 3152#ifndef __NetBSD__
1503 /* kqueue is borked on everything but netbsd apparently */ 3153 /* kqueue is borked on everything but netbsd apparently */
… …
1507#ifdef __APPLE__ 3157#ifdef __APPLE__
1508 /* only select works correctly on that "unix-certified" platform */ 3158 /* only select works correctly on that "unix-certified" platform */
1509 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 3159 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1510 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 3160 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1511#endif 3161#endif
3162#ifdef __FreeBSD__
3163 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
3164#endif
3165
3166 /* TODO: linuxaio is very experimental */
3167#if !EV_RECOMMEND_LINUXAIO
3168 flags &= ~EVBACKEND_LINUXAIO;
3169#endif
3170 /* TODO: linuxaio is super experimental */
3171#if !EV_RECOMMEND_IOURING
3172 flags &= ~EVBACKEND_IOURING;
3173#endif
1512 3174
1513 return flags; 3175 return flags;
1514} 3176}
1515 3177
3178ecb_cold
1516unsigned int 3179unsigned int
1517ev_embeddable_backends (void) 3180ev_embeddable_backends (void) EV_NOEXCEPT
1518{ 3181{
1519 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 3182 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT | EVBACKEND_IOURING;
1520 3183
1521 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 3184 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1522 /* please fix it and tell me how to detect the fix */ 3185 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1523 flags &= ~EVBACKEND_EPOLL; 3186 flags &= ~EVBACKEND_EPOLL;
3187
3188 /* EVBACKEND_LINUXAIO is theoretically embeddable, but suffers from a performance overhead */
1524 3189
1525 return flags; 3190 return flags;
1526} 3191}
1527 3192
1528unsigned int 3193unsigned int
1529ev_backend (EV_P) 3194ev_backend (EV_P) EV_NOEXCEPT
1530{ 3195{
1531 return backend; 3196 return backend;
1532} 3197}
1533 3198
1534#if EV_FEATURE_API 3199#if EV_FEATURE_API
1535unsigned int 3200unsigned int
1536ev_loop_count (EV_P) 3201ev_iteration (EV_P) EV_NOEXCEPT
1537{ 3202{
1538 return loop_count; 3203 return loop_count;
1539} 3204}
1540 3205
1541unsigned int 3206unsigned int
1542ev_loop_depth (EV_P) 3207ev_depth (EV_P) EV_NOEXCEPT
1543{ 3208{
1544 return loop_depth; 3209 return loop_depth;
1545} 3210}
1546 3211
1547void 3212void
1548ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 3213ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1549{ 3214{
1550 io_blocktime = interval; 3215 io_blocktime = interval;
1551} 3216}
1552 3217
1553void 3218void
1554ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 3219ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1555{ 3220{
1556 timeout_blocktime = interval; 3221 timeout_blocktime = interval;
1557} 3222}
1558 3223
1559void 3224void
1560ev_set_userdata (EV_P_ void *data) 3225ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
1561{ 3226{
1562 userdata = data; 3227 userdata = data;
1563} 3228}
1564 3229
1565void * 3230void *
1566ev_userdata (EV_P) 3231ev_userdata (EV_P) EV_NOEXCEPT
1567{ 3232{
1568 return userdata; 3233 return userdata;
1569} 3234}
1570 3235
3236void
1571void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 3237ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
1572{ 3238{
1573 invoke_cb = invoke_pending_cb; 3239 invoke_cb = invoke_pending_cb;
1574} 3240}
1575 3241
3242void
1576void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 3243ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
1577{ 3244{
1578 release_cb = release; 3245 release_cb = release;
1579 acquire_cb = acquire; 3246 acquire_cb = acquire;
1580} 3247}
1581#endif 3248#endif
1582 3249
1583/* initialise a loop structure, must be zero-initialised */ 3250/* initialise a loop structure, must be zero-initialised */
1584static void noinline 3251ecb_noinline ecb_cold
3252static void
1585loop_init (EV_P_ unsigned int flags) 3253loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
1586{ 3254{
1587 if (!backend) 3255 if (!backend)
1588 { 3256 {
3257 origflags = flags;
3258
1589#if EV_USE_REALTIME 3259#if EV_USE_REALTIME
1590 if (!have_realtime) 3260 if (!have_realtime)
1591 { 3261 {
1592 struct timespec ts; 3262 struct timespec ts;
1593 3263
… …
1615 if (!(flags & EVFLAG_NOENV) 3285 if (!(flags & EVFLAG_NOENV)
1616 && !enable_secure () 3286 && !enable_secure ()
1617 && getenv ("LIBEV_FLAGS")) 3287 && getenv ("LIBEV_FLAGS"))
1618 flags = atoi (getenv ("LIBEV_FLAGS")); 3288 flags = atoi (getenv ("LIBEV_FLAGS"));
1619 3289
1620 ev_rt_now = ev_time (); 3290 ev_rt_now = ev_time ();
1621 mn_now = get_clock (); 3291 mn_now = get_clock ();
1622 now_floor = mn_now; 3292 now_floor = mn_now;
1623 rtmn_diff = ev_rt_now - mn_now; 3293 rtmn_diff = ev_rt_now - mn_now;
1624#if EV_FEATURE_API 3294#if EV_FEATURE_API
1625 invoke_cb = ev_invoke_pending; 3295 invoke_cb = ev_invoke_pending;
1626#endif 3296#endif
1627 3297
1628 io_blocktime = 0.; 3298 io_blocktime = 0.;
1629 timeout_blocktime = 0.; 3299 timeout_blocktime = 0.;
1630 backend = 0; 3300 backend = 0;
1631 backend_fd = -1; 3301 backend_fd = -1;
1632 sig_pending = 0; 3302 sig_pending = 0;
1633#if EV_ASYNC_ENABLE 3303#if EV_ASYNC_ENABLE
1634 async_pending = 0; 3304 async_pending = 0;
1635#endif 3305#endif
3306 pipe_write_skipped = 0;
3307 pipe_write_wanted = 0;
3308 evpipe [0] = -1;
3309 evpipe [1] = -1;
1636#if EV_USE_INOTIFY 3310#if EV_USE_INOTIFY
1637 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 3311 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1638#endif 3312#endif
1639#if EV_USE_SIGNALFD 3313#if EV_USE_SIGNALFD
1640 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 3314 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1641#endif 3315#endif
3316#if EV_USE_TIMERFD
3317 timerfd = flags & EVFLAG_NOTIMERFD ? -1 : -2;
3318#endif
1642 3319
1643 if (!(flags & 0x0000ffffU)) 3320 if (!(flags & EVBACKEND_MASK))
1644 flags |= ev_recommended_backends (); 3321 flags |= ev_recommended_backends ();
1645 3322
3323#if EV_USE_IOCP
3324 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
3325#endif
1646#if EV_USE_PORT 3326#if EV_USE_PORT
1647 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 3327 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1648#endif 3328#endif
1649#if EV_USE_KQUEUE 3329#if EV_USE_KQUEUE
1650 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 3330 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
3331#endif
3332#if EV_USE_IOURING
3333 if (!backend && (flags & EVBACKEND_IOURING )) backend = iouring_init (EV_A_ flags);
3334#endif
3335#if EV_USE_LINUXAIO
3336 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
1651#endif 3337#endif
1652#if EV_USE_EPOLL 3338#if EV_USE_EPOLL
1653 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 3339 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
1654#endif 3340#endif
1655#if EV_USE_POLL 3341#if EV_USE_POLL
1656 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 3342 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
1657#endif 3343#endif
1658#if EV_USE_SELECT 3344#if EV_USE_SELECT
1659 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 3345 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
1660#endif 3346#endif
1661 3347
1662 ev_prepare_init (&pending_w, pendingcb); 3348 ev_prepare_init (&pending_w, pendingcb);
1663 3349
1664#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 3350#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
… …
1667#endif 3353#endif
1668 } 3354 }
1669} 3355}
1670 3356
1671/* free up a loop structure */ 3357/* free up a loop structure */
1672static void noinline 3358ecb_cold
3359void
1673loop_destroy (EV_P) 3360ev_loop_destroy (EV_P)
1674{ 3361{
1675 int i; 3362 int i;
3363
3364#if EV_MULTIPLICITY
3365 /* mimic free (0) */
3366 if (!EV_A)
3367 return;
3368#endif
3369
3370#if EV_CLEANUP_ENABLE
3371 /* queue cleanup watchers (and execute them) */
3372 if (ecb_expect_false (cleanupcnt))
3373 {
3374 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
3375 EV_INVOKE_PENDING;
3376 }
3377#endif
3378
3379#if EV_CHILD_ENABLE
3380 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
3381 {
3382 ev_ref (EV_A); /* child watcher */
3383 ev_signal_stop (EV_A_ &childev);
3384 }
3385#endif
1676 3386
1677 if (ev_is_active (&pipe_w)) 3387 if (ev_is_active (&pipe_w))
1678 { 3388 {
1679 /*ev_ref (EV_A);*/ 3389 /*ev_ref (EV_A);*/
1680 /*ev_io_stop (EV_A_ &pipe_w);*/ 3390 /*ev_io_stop (EV_A_ &pipe_w);*/
1681 3391
1682#if EV_USE_EVENTFD
1683 if (evfd >= 0)
1684 close (evfd);
1685#endif
1686
1687 if (evpipe [0] >= 0)
1688 {
1689 EV_WIN32_CLOSE_FD (evpipe [0]); 3392 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1690 EV_WIN32_CLOSE_FD (evpipe [1]); 3393 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1691 }
1692 } 3394 }
1693 3395
1694#if EV_USE_SIGNALFD 3396#if EV_USE_SIGNALFD
1695 if (ev_is_active (&sigfd_w)) 3397 if (ev_is_active (&sigfd_w))
1696 close (sigfd); 3398 close (sigfd);
1697#endif 3399#endif
1698 3400
3401#if EV_USE_TIMERFD
3402 if (ev_is_active (&timerfd_w))
3403 close (timerfd);
3404#endif
3405
1699#if EV_USE_INOTIFY 3406#if EV_USE_INOTIFY
1700 if (fs_fd >= 0) 3407 if (fs_fd >= 0)
1701 close (fs_fd); 3408 close (fs_fd);
1702#endif 3409#endif
1703 3410
1704 if (backend_fd >= 0) 3411 if (backend_fd >= 0)
1705 close (backend_fd); 3412 close (backend_fd);
1706 3413
3414#if EV_USE_IOCP
3415 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
3416#endif
1707#if EV_USE_PORT 3417#if EV_USE_PORT
1708 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3418 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1709#endif 3419#endif
1710#if EV_USE_KQUEUE 3420#if EV_USE_KQUEUE
1711 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3421 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
3422#endif
3423#if EV_USE_IOURING
3424 if (backend == EVBACKEND_IOURING ) iouring_destroy (EV_A);
3425#endif
3426#if EV_USE_LINUXAIO
3427 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
1712#endif 3428#endif
1713#if EV_USE_EPOLL 3429#if EV_USE_EPOLL
1714 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3430 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
1715#endif 3431#endif
1716#if EV_USE_POLL 3432#if EV_USE_POLL
1717 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3433 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
1718#endif 3434#endif
1719#if EV_USE_SELECT 3435#if EV_USE_SELECT
1720 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3436 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
1721#endif 3437#endif
1722 3438
1723 for (i = NUMPRI; i--; ) 3439 for (i = NUMPRI; i--; )
1724 { 3440 {
1725 array_free (pending, [i]); 3441 array_free (pending, [i]);
… …
1738 array_free (periodic, EMPTY); 3454 array_free (periodic, EMPTY);
1739#endif 3455#endif
1740#if EV_FORK_ENABLE 3456#if EV_FORK_ENABLE
1741 array_free (fork, EMPTY); 3457 array_free (fork, EMPTY);
1742#endif 3458#endif
3459#if EV_CLEANUP_ENABLE
3460 array_free (cleanup, EMPTY);
3461#endif
1743 array_free (prepare, EMPTY); 3462 array_free (prepare, EMPTY);
1744 array_free (check, EMPTY); 3463 array_free (check, EMPTY);
1745#if EV_ASYNC_ENABLE 3464#if EV_ASYNC_ENABLE
1746 array_free (async, EMPTY); 3465 array_free (async, EMPTY);
1747#endif 3466#endif
1748 3467
1749 backend = 0; 3468 backend = 0;
3469
3470#if EV_MULTIPLICITY
3471 if (ev_is_default_loop (EV_A))
3472#endif
3473 ev_default_loop_ptr = 0;
3474#if EV_MULTIPLICITY
3475 else
3476 ev_free (EV_A);
3477#endif
1750} 3478}
1751 3479
1752#if EV_USE_INOTIFY 3480#if EV_USE_INOTIFY
1753inline_size void infy_fork (EV_P); 3481inline_size void infy_fork (EV_P);
1754#endif 3482#endif
1755 3483
1756inline_size void 3484inline_size void
1757loop_fork (EV_P) 3485loop_fork (EV_P)
1758{ 3486{
1759#if EV_USE_PORT 3487#if EV_USE_PORT
1760 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3488 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1761#endif 3489#endif
1762#if EV_USE_KQUEUE 3490#if EV_USE_KQUEUE
1763 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 3491 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
3492#endif
3493#if EV_USE_IOURING
3494 if (backend == EVBACKEND_IOURING ) iouring_fork (EV_A);
3495#endif
3496#if EV_USE_LINUXAIO
3497 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
1764#endif 3498#endif
1765#if EV_USE_EPOLL 3499#if EV_USE_EPOLL
1766 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3500 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
1767#endif 3501#endif
1768#if EV_USE_INOTIFY 3502#if EV_USE_INOTIFY
1769 infy_fork (EV_A); 3503 infy_fork (EV_A);
1770#endif 3504#endif
1771 3505
3506 if (postfork != 2)
3507 {
3508 #if EV_USE_SIGNALFD
3509 /* surprisingly, nothing needs to be done for signalfd, accoridng to docs, it does the right thing on fork */
3510 #endif
3511
3512 #if EV_USE_TIMERFD
3513 if (ev_is_active (&timerfd_w))
3514 {
3515 ev_ref (EV_A);
3516 ev_io_stop (EV_A_ &timerfd_w);
3517
3518 close (timerfd);
3519 timerfd = -2;
3520
3521 evtimerfd_init (EV_A);
3522 /* reschedule periodics, in case we missed something */
3523 ev_feed_event (EV_A_ &timerfd_w, EV_CUSTOM);
3524 }
3525 #endif
3526
3527 #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1772 if (ev_is_active (&pipe_w)) 3528 if (ev_is_active (&pipe_w))
1773 { 3529 {
1774 /* this "locks" the handlers against writing to the pipe */ 3530 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1775 /* while we modify the fd vars */ 3531
1776 sig_pending = 1;
1777#if EV_ASYNC_ENABLE
1778 async_pending = 1;
1779#endif
1780
1781 ev_ref (EV_A); 3532 ev_ref (EV_A);
1782 ev_io_stop (EV_A_ &pipe_w); 3533 ev_io_stop (EV_A_ &pipe_w);
1783 3534
1784#if EV_USE_EVENTFD
1785 if (evfd >= 0)
1786 close (evfd);
1787#endif
1788
1789 if (evpipe [0] >= 0) 3535 if (evpipe [0] >= 0)
1790 {
1791 EV_WIN32_CLOSE_FD (evpipe [0]); 3536 EV_WIN32_CLOSE_FD (evpipe [0]);
1792 EV_WIN32_CLOSE_FD (evpipe [1]); 3537
3538 evpipe_init (EV_A);
3539 /* iterate over everything, in case we missed something before */
3540 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1793 } 3541 }
1794 3542 #endif
1795#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1796 evpipe_init (EV_A);
1797 /* now iterate over everything, in case we missed something */
1798 pipecb (EV_A_ &pipe_w, EV_READ);
1799#endif
1800 } 3543 }
1801 3544
1802 postfork = 0; 3545 postfork = 0;
1803} 3546}
1804 3547
1805#if EV_MULTIPLICITY 3548#if EV_MULTIPLICITY
1806 3549
3550ecb_cold
1807struct ev_loop * 3551struct ev_loop *
1808ev_loop_new (unsigned int flags) 3552ev_loop_new (unsigned int flags) EV_NOEXCEPT
1809{ 3553{
1810 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3554 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1811 3555
1812 memset (EV_A, 0, sizeof (struct ev_loop)); 3556 memset (EV_A, 0, sizeof (struct ev_loop));
1813 loop_init (EV_A_ flags); 3557 loop_init (EV_A_ flags);
1814 3558
1815 if (ev_backend (EV_A)) 3559 if (ev_backend (EV_A))
1816 return EV_A; 3560 return EV_A;
1817 3561
3562 ev_free (EV_A);
1818 return 0; 3563 return 0;
1819} 3564}
1820 3565
1821void
1822ev_loop_destroy (EV_P)
1823{
1824 loop_destroy (EV_A);
1825 ev_free (loop);
1826}
1827
1828void
1829ev_loop_fork (EV_P)
1830{
1831 postfork = 1; /* must be in line with ev_default_fork */
1832}
1833#endif /* multiplicity */ 3566#endif /* multiplicity */
1834 3567
1835#if EV_VERIFY 3568#if EV_VERIFY
1836static void noinline 3569ecb_noinline ecb_cold
3570static void
1837verify_watcher (EV_P_ W w) 3571verify_watcher (EV_P_ W w)
1838{ 3572{
1839 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3573 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1840 3574
1841 if (w->pending) 3575 if (w->pending)
1842 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3576 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1843} 3577}
1844 3578
1845static void noinline 3579ecb_noinline ecb_cold
3580static void
1846verify_heap (EV_P_ ANHE *heap, int N) 3581verify_heap (EV_P_ ANHE *heap, int N)
1847{ 3582{
1848 int i; 3583 int i;
1849 3584
1850 for (i = HEAP0; i < N + HEAP0; ++i) 3585 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1855 3590
1856 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3591 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1857 } 3592 }
1858} 3593}
1859 3594
1860static void noinline 3595ecb_noinline ecb_cold
3596static void
1861array_verify (EV_P_ W *ws, int cnt) 3597array_verify (EV_P_ W *ws, int cnt)
1862{ 3598{
1863 while (cnt--) 3599 while (cnt--)
1864 { 3600 {
1865 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3601 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
1867 } 3603 }
1868} 3604}
1869#endif 3605#endif
1870 3606
1871#if EV_FEATURE_API 3607#if EV_FEATURE_API
1872void 3608void ecb_cold
1873ev_loop_verify (EV_P) 3609ev_verify (EV_P) EV_NOEXCEPT
1874{ 3610{
1875#if EV_VERIFY 3611#if EV_VERIFY
1876 int i; 3612 int i;
1877 WL w; 3613 WL w, w2;
1878 3614
1879 assert (activecnt >= -1); 3615 assert (activecnt >= -1);
1880 3616
1881 assert (fdchangemax >= fdchangecnt); 3617 assert (fdchangemax >= fdchangecnt);
1882 for (i = 0; i < fdchangecnt; ++i) 3618 for (i = 0; i < fdchangecnt; ++i)
1883 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3619 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1884 3620
1885 assert (anfdmax >= 0); 3621 assert (anfdmax >= 0);
1886 for (i = 0; i < anfdmax; ++i) 3622 for (i = 0; i < anfdmax; ++i)
3623 {
3624 int j = 0;
3625
1887 for (w = anfds [i].head; w; w = w->next) 3626 for (w = w2 = anfds [i].head; w; w = w->next)
1888 { 3627 {
1889 verify_watcher (EV_A_ (W)w); 3628 verify_watcher (EV_A_ (W)w);
3629
3630 if (j++ & 1)
3631 {
3632 assert (("libev: io watcher list contains a loop", w != w2));
3633 w2 = w2->next;
3634 }
3635
1890 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3636 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1891 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 3637 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1892 } 3638 }
3639 }
1893 3640
1894 assert (timermax >= timercnt); 3641 assert (timermax >= timercnt);
1895 verify_heap (EV_A_ timers, timercnt); 3642 verify_heap (EV_A_ timers, timercnt);
1896 3643
1897#if EV_PERIODIC_ENABLE 3644#if EV_PERIODIC_ENABLE
… …
1912#if EV_FORK_ENABLE 3659#if EV_FORK_ENABLE
1913 assert (forkmax >= forkcnt); 3660 assert (forkmax >= forkcnt);
1914 array_verify (EV_A_ (W *)forks, forkcnt); 3661 array_verify (EV_A_ (W *)forks, forkcnt);
1915#endif 3662#endif
1916 3663
3664#if EV_CLEANUP_ENABLE
3665 assert (cleanupmax >= cleanupcnt);
3666 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
3667#endif
3668
1917#if EV_ASYNC_ENABLE 3669#if EV_ASYNC_ENABLE
1918 assert (asyncmax >= asynccnt); 3670 assert (asyncmax >= asynccnt);
1919 array_verify (EV_A_ (W *)asyncs, asynccnt); 3671 array_verify (EV_A_ (W *)asyncs, asynccnt);
1920#endif 3672#endif
1921 3673
… …
1938#endif 3690#endif
1939} 3691}
1940#endif 3692#endif
1941 3693
1942#if EV_MULTIPLICITY 3694#if EV_MULTIPLICITY
3695ecb_cold
1943struct ev_loop * 3696struct ev_loop *
1944ev_default_loop_init (unsigned int flags)
1945#else 3697#else
1946int 3698int
3699#endif
1947ev_default_loop (unsigned int flags) 3700ev_default_loop (unsigned int flags) EV_NOEXCEPT
1948#endif
1949{ 3701{
1950 if (!ev_default_loop_ptr) 3702 if (!ev_default_loop_ptr)
1951 { 3703 {
1952#if EV_MULTIPLICITY 3704#if EV_MULTIPLICITY
1953 EV_P = ev_default_loop_ptr = &default_loop_struct; 3705 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1972 3724
1973 return ev_default_loop_ptr; 3725 return ev_default_loop_ptr;
1974} 3726}
1975 3727
1976void 3728void
1977ev_default_destroy (void) 3729ev_loop_fork (EV_P) EV_NOEXCEPT
1978{ 3730{
1979#if EV_MULTIPLICITY 3731 postfork = 1;
1980 EV_P = ev_default_loop_ptr;
1981#endif
1982
1983 ev_default_loop_ptr = 0;
1984
1985#if EV_CHILD_ENABLE
1986 ev_ref (EV_A); /* child watcher */
1987 ev_signal_stop (EV_A_ &childev);
1988#endif
1989
1990 loop_destroy (EV_A);
1991}
1992
1993void
1994ev_default_fork (void)
1995{
1996#if EV_MULTIPLICITY
1997 EV_P = ev_default_loop_ptr;
1998#endif
1999
2000 postfork = 1; /* must be in line with ev_loop_fork */
2001} 3732}
2002 3733
2003/*****************************************************************************/ 3734/*****************************************************************************/
2004 3735
2005void 3736void
… …
2007{ 3738{
2008 EV_CB_INVOKE ((W)w, revents); 3739 EV_CB_INVOKE ((W)w, revents);
2009} 3740}
2010 3741
2011unsigned int 3742unsigned int
2012ev_pending_count (EV_P) 3743ev_pending_count (EV_P) EV_NOEXCEPT
2013{ 3744{
2014 int pri; 3745 int pri;
2015 unsigned int count = 0; 3746 unsigned int count = 0;
2016 3747
2017 for (pri = NUMPRI; pri--; ) 3748 for (pri = NUMPRI; pri--; )
2018 count += pendingcnt [pri]; 3749 count += pendingcnt [pri];
2019 3750
2020 return count; 3751 return count;
2021} 3752}
2022 3753
2023void noinline 3754ecb_noinline
3755void
2024ev_invoke_pending (EV_P) 3756ev_invoke_pending (EV_P)
2025{ 3757{
2026 int pri; 3758 pendingpri = NUMPRI;
2027 3759
2028 for (pri = NUMPRI; pri--; ) 3760 do
3761 {
3762 --pendingpri;
3763
3764 /* pendingpri possibly gets modified in the inner loop */
2029 while (pendingcnt [pri]) 3765 while (pendingcnt [pendingpri])
2030 { 3766 {
2031 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3767 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2032 3768
2033 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2034 /* ^ this is no longer true, as pending_w could be here */
2035
2036 p->w->pending = 0; 3769 p->w->pending = 0;
2037 EV_CB_INVOKE (p->w, p->events); 3770 EV_CB_INVOKE (p->w, p->events);
2038 EV_FREQUENT_CHECK; 3771 EV_FREQUENT_CHECK;
2039 } 3772 }
3773 }
3774 while (pendingpri);
2040} 3775}
2041 3776
2042#if EV_IDLE_ENABLE 3777#if EV_IDLE_ENABLE
2043/* make idle watchers pending. this handles the "call-idle */ 3778/* make idle watchers pending. this handles the "call-idle */
2044/* only when higher priorities are idle" logic */ 3779/* only when higher priorities are idle" logic */
2045inline_size void 3780inline_size void
2046idle_reify (EV_P) 3781idle_reify (EV_P)
2047{ 3782{
2048 if (expect_false (idleall)) 3783 if (ecb_expect_false (idleall))
2049 { 3784 {
2050 int pri; 3785 int pri;
2051 3786
2052 for (pri = NUMPRI; pri--; ) 3787 for (pri = NUMPRI; pri--; )
2053 { 3788 {
… …
2083 { 3818 {
2084 ev_at (w) += w->repeat; 3819 ev_at (w) += w->repeat;
2085 if (ev_at (w) < mn_now) 3820 if (ev_at (w) < mn_now)
2086 ev_at (w) = mn_now; 3821 ev_at (w) = mn_now;
2087 3822
2088 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 3823 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > EV_TS_CONST (0.)));
2089 3824
2090 ANHE_at_cache (timers [HEAP0]); 3825 ANHE_at_cache (timers [HEAP0]);
2091 downheap (timers, timercnt, HEAP0); 3826 downheap (timers, timercnt, HEAP0);
2092 } 3827 }
2093 else 3828 else
… …
2096 EV_FREQUENT_CHECK; 3831 EV_FREQUENT_CHECK;
2097 feed_reverse (EV_A_ (W)w); 3832 feed_reverse (EV_A_ (W)w);
2098 } 3833 }
2099 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 3834 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
2100 3835
2101 feed_reverse_done (EV_A_ EV_TIMEOUT); 3836 feed_reverse_done (EV_A_ EV_TIMER);
2102 } 3837 }
2103} 3838}
2104 3839
2105#if EV_PERIODIC_ENABLE 3840#if EV_PERIODIC_ENABLE
3841
3842ecb_noinline
3843static void
3844periodic_recalc (EV_P_ ev_periodic *w)
3845{
3846 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3847 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3848
3849 /* the above almost always errs on the low side */
3850 while (at <= ev_rt_now)
3851 {
3852 ev_tstamp nat = at + w->interval;
3853
3854 /* when resolution fails us, we use ev_rt_now */
3855 if (ecb_expect_false (nat == at))
3856 {
3857 at = ev_rt_now;
3858 break;
3859 }
3860
3861 at = nat;
3862 }
3863
3864 ev_at (w) = at;
3865}
3866
2106/* make periodics pending */ 3867/* make periodics pending */
2107inline_size void 3868inline_size void
2108periodics_reify (EV_P) 3869periodics_reify (EV_P)
2109{ 3870{
2110 EV_FREQUENT_CHECK; 3871 EV_FREQUENT_CHECK;
2111 3872
2112 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3873 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2113 { 3874 {
2114 int feed_count = 0;
2115
2116 do 3875 do
2117 { 3876 {
2118 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3877 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2119 3878
2120 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3879 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2129 ANHE_at_cache (periodics [HEAP0]); 3888 ANHE_at_cache (periodics [HEAP0]);
2130 downheap (periodics, periodiccnt, HEAP0); 3889 downheap (periodics, periodiccnt, HEAP0);
2131 } 3890 }
2132 else if (w->interval) 3891 else if (w->interval)
2133 { 3892 {
2134 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3893 periodic_recalc (EV_A_ w);
2135 /* if next trigger time is not sufficiently in the future, put it there */
2136 /* this might happen because of floating point inexactness */
2137 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2138 {
2139 ev_at (w) += w->interval;
2140
2141 /* if interval is unreasonably low we might still have a time in the past */
2142 /* so correct this. this will make the periodic very inexact, but the user */
2143 /* has effectively asked to get triggered more often than possible */
2144 if (ev_at (w) < ev_rt_now)
2145 ev_at (w) = ev_rt_now;
2146 }
2147
2148 ANHE_at_cache (periodics [HEAP0]); 3894 ANHE_at_cache (periodics [HEAP0]);
2149 downheap (periodics, periodiccnt, HEAP0); 3895 downheap (periodics, periodiccnt, HEAP0);
2150 } 3896 }
2151 else 3897 else
2152 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3898 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2159 feed_reverse_done (EV_A_ EV_PERIODIC); 3905 feed_reverse_done (EV_A_ EV_PERIODIC);
2160 } 3906 }
2161} 3907}
2162 3908
2163/* simply recalculate all periodics */ 3909/* simply recalculate all periodics */
2164/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 3910/* TODO: maybe ensure that at least one event happens when jumping forward? */
2165static void noinline 3911ecb_noinline ecb_cold
3912static void
2166periodics_reschedule (EV_P) 3913periodics_reschedule (EV_P)
2167{ 3914{
2168 int i; 3915 int i;
2169 3916
2170 /* adjust periodics after time jump */ 3917 /* adjust periodics after time jump */
… …
2173 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3920 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2174 3921
2175 if (w->reschedule_cb) 3922 if (w->reschedule_cb)
2176 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3923 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2177 else if (w->interval) 3924 else if (w->interval)
2178 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3925 periodic_recalc (EV_A_ w);
2179 3926
2180 ANHE_at_cache (periodics [i]); 3927 ANHE_at_cache (periodics [i]);
2181 } 3928 }
2182 3929
2183 reheap (periodics, periodiccnt); 3930 reheap (periodics, periodiccnt);
2184} 3931}
2185#endif 3932#endif
2186 3933
2187/* adjust all timers by a given offset */ 3934/* adjust all timers by a given offset */
2188static void noinline 3935ecb_noinline ecb_cold
3936static void
2189timers_reschedule (EV_P_ ev_tstamp adjust) 3937timers_reschedule (EV_P_ ev_tstamp adjust)
2190{ 3938{
2191 int i; 3939 int i;
2192 3940
2193 for (i = 0; i < timercnt; ++i) 3941 for (i = 0; i < timercnt; ++i)
… …
2202/* also detect if there was a timejump, and act accordingly */ 3950/* also detect if there was a timejump, and act accordingly */
2203inline_speed void 3951inline_speed void
2204time_update (EV_P_ ev_tstamp max_block) 3952time_update (EV_P_ ev_tstamp max_block)
2205{ 3953{
2206#if EV_USE_MONOTONIC 3954#if EV_USE_MONOTONIC
2207 if (expect_true (have_monotonic)) 3955 if (ecb_expect_true (have_monotonic))
2208 { 3956 {
2209 int i; 3957 int i;
2210 ev_tstamp odiff = rtmn_diff; 3958 ev_tstamp odiff = rtmn_diff;
2211 3959
2212 mn_now = get_clock (); 3960 mn_now = get_clock ();
2213 3961
2214 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3962 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
2215 /* interpolate in the meantime */ 3963 /* interpolate in the meantime */
2216 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 3964 if (ecb_expect_true (mn_now - now_floor < EV_TS_CONST (MIN_TIMEJUMP * .5)))
2217 { 3965 {
2218 ev_rt_now = rtmn_diff + mn_now; 3966 ev_rt_now = rtmn_diff + mn_now;
2219 return; 3967 return;
2220 } 3968 }
2221 3969
… …
2230 * doesn't hurt either as we only do this on time-jumps or 3978 * doesn't hurt either as we only do this on time-jumps or
2231 * in the unlikely event of having been preempted here. 3979 * in the unlikely event of having been preempted here.
2232 */ 3980 */
2233 for (i = 4; --i; ) 3981 for (i = 4; --i; )
2234 { 3982 {
3983 ev_tstamp diff;
2235 rtmn_diff = ev_rt_now - mn_now; 3984 rtmn_diff = ev_rt_now - mn_now;
2236 3985
2237 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3986 diff = odiff - rtmn_diff;
3987
3988 if (ecb_expect_true ((diff < EV_TS_CONST (0.) ? -diff : diff) < EV_TS_CONST (MIN_TIMEJUMP)))
2238 return; /* all is well */ 3989 return; /* all is well */
2239 3990
2240 ev_rt_now = ev_time (); 3991 ev_rt_now = ev_time ();
2241 mn_now = get_clock (); 3992 mn_now = get_clock ();
2242 now_floor = mn_now; 3993 now_floor = mn_now;
… …
2251 else 4002 else
2252#endif 4003#endif
2253 { 4004 {
2254 ev_rt_now = ev_time (); 4005 ev_rt_now = ev_time ();
2255 4006
2256 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 4007 if (ecb_expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + EV_TS_CONST (MIN_TIMEJUMP)))
2257 { 4008 {
2258 /* adjust timers. this is easy, as the offset is the same for all of them */ 4009 /* adjust timers. this is easy, as the offset is the same for all of them */
2259 timers_reschedule (EV_A_ ev_rt_now - mn_now); 4010 timers_reschedule (EV_A_ ev_rt_now - mn_now);
2260#if EV_PERIODIC_ENABLE 4011#if EV_PERIODIC_ENABLE
2261 periodics_reschedule (EV_A); 4012 periodics_reschedule (EV_A);
… …
2264 4015
2265 mn_now = ev_rt_now; 4016 mn_now = ev_rt_now;
2266 } 4017 }
2267} 4018}
2268 4019
2269void 4020int
2270ev_loop (EV_P_ int flags) 4021ev_run (EV_P_ int flags)
2271{ 4022{
2272#if EV_FEATURE_API 4023#if EV_FEATURE_API
2273 ++loop_depth; 4024 ++loop_depth;
2274#endif 4025#endif
2275 4026
2276 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 4027 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2277 4028
2278 loop_done = EVUNLOOP_CANCEL; 4029 loop_done = EVBREAK_CANCEL;
2279 4030
2280 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 4031 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2281 4032
2282 do 4033 do
2283 { 4034 {
2284#if EV_VERIFY >= 2 4035#if EV_VERIFY >= 2
2285 ev_loop_verify (EV_A); 4036 ev_verify (EV_A);
2286#endif 4037#endif
2287 4038
2288#ifndef _WIN32 4039#ifndef _WIN32
2289 if (expect_false (curpid)) /* penalise the forking check even more */ 4040 if (ecb_expect_false (curpid)) /* penalise the forking check even more */
2290 if (expect_false (getpid () != curpid)) 4041 if (ecb_expect_false (getpid () != curpid))
2291 { 4042 {
2292 curpid = getpid (); 4043 curpid = getpid ();
2293 postfork = 1; 4044 postfork = 1;
2294 } 4045 }
2295#endif 4046#endif
2296 4047
2297#if EV_FORK_ENABLE 4048#if EV_FORK_ENABLE
2298 /* we might have forked, so queue fork handlers */ 4049 /* we might have forked, so queue fork handlers */
2299 if (expect_false (postfork)) 4050 if (ecb_expect_false (postfork))
2300 if (forkcnt) 4051 if (forkcnt)
2301 { 4052 {
2302 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 4053 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2303 EV_INVOKE_PENDING; 4054 EV_INVOKE_PENDING;
2304 } 4055 }
2305#endif 4056#endif
2306 4057
2307#if EV_PREPARE_ENABLE 4058#if EV_PREPARE_ENABLE
2308 /* queue prepare watchers (and execute them) */ 4059 /* queue prepare watchers (and execute them) */
2309 if (expect_false (preparecnt)) 4060 if (ecb_expect_false (preparecnt))
2310 { 4061 {
2311 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 4062 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2312 EV_INVOKE_PENDING; 4063 EV_INVOKE_PENDING;
2313 } 4064 }
2314#endif 4065#endif
2315 4066
2316 if (expect_false (loop_done)) 4067 if (ecb_expect_false (loop_done))
2317 break; 4068 break;
2318 4069
2319 /* we might have forked, so reify kernel state if necessary */ 4070 /* we might have forked, so reify kernel state if necessary */
2320 if (expect_false (postfork)) 4071 if (ecb_expect_false (postfork))
2321 loop_fork (EV_A); 4072 loop_fork (EV_A);
2322 4073
2323 /* update fd-related kernel structures */ 4074 /* update fd-related kernel structures */
2324 fd_reify (EV_A); 4075 fd_reify (EV_A);
2325 4076
2326 /* calculate blocking time */ 4077 /* calculate blocking time */
2327 { 4078 {
2328 ev_tstamp waittime = 0.; 4079 ev_tstamp waittime = 0.;
2329 ev_tstamp sleeptime = 0.; 4080 ev_tstamp sleeptime = 0.;
2330 4081
4082 /* remember old timestamp for io_blocktime calculation */
4083 ev_tstamp prev_mn_now = mn_now;
4084
4085 /* update time to cancel out callback processing overhead */
4086 time_update (EV_A_ EV_TS_CONST (EV_TSTAMP_HUGE));
4087
4088 /* from now on, we want a pipe-wake-up */
4089 pipe_write_wanted = 1;
4090
4091 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
4092
2331 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 4093 if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2332 { 4094 {
2333 /* remember old timestamp for io_blocktime calculation */
2334 ev_tstamp prev_mn_now = mn_now;
2335
2336 /* update time to cancel out callback processing overhead */
2337 time_update (EV_A_ 1e100);
2338
2339 waittime = MAX_BLOCKTIME; 4095 waittime = EV_TS_CONST (MAX_BLOCKTIME);
4096
4097#if EV_USE_TIMERFD
4098 /* sleep a lot longer when we can reliably detect timejumps */
4099 if (ecb_expect_true (timerfd >= 0))
4100 waittime = EV_TS_CONST (MAX_BLOCKTIME2);
4101#endif
4102#if !EV_PERIODIC_ENABLE
4103 /* without periodics but with monotonic clock there is no need */
4104 /* for any time jump detection, so sleep longer */
4105 if (ecb_expect_true (have_monotonic))
4106 waittime = EV_TS_CONST (MAX_BLOCKTIME2);
4107#endif
2340 4108
2341 if (timercnt) 4109 if (timercnt)
2342 { 4110 {
2343 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 4111 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2344 if (waittime > to) waittime = to; 4112 if (waittime > to) waittime = to;
2345 } 4113 }
2346 4114
2347#if EV_PERIODIC_ENABLE 4115#if EV_PERIODIC_ENABLE
2348 if (periodiccnt) 4116 if (periodiccnt)
2349 { 4117 {
2350 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 4118 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2351 if (waittime > to) waittime = to; 4119 if (waittime > to) waittime = to;
2352 } 4120 }
2353#endif 4121#endif
2354 4122
2355 /* don't let timeouts decrease the waittime below timeout_blocktime */ 4123 /* don't let timeouts decrease the waittime below timeout_blocktime */
2356 if (expect_false (waittime < timeout_blocktime)) 4124 if (ecb_expect_false (waittime < timeout_blocktime))
2357 waittime = timeout_blocktime; 4125 waittime = timeout_blocktime;
2358 4126
4127 /* now there are two more special cases left, either we have
4128 * already-expired timers, so we should not sleep, or we have timers
4129 * that expire very soon, in which case we need to wait for a minimum
4130 * amount of time for some event loop backends.
4131 */
4132 if (ecb_expect_false (waittime < backend_mintime))
4133 waittime = waittime <= EV_TS_CONST (0.)
4134 ? EV_TS_CONST (0.)
4135 : backend_mintime;
4136
2359 /* extra check because io_blocktime is commonly 0 */ 4137 /* extra check because io_blocktime is commonly 0 */
2360 if (expect_false (io_blocktime)) 4138 if (ecb_expect_false (io_blocktime))
2361 { 4139 {
2362 sleeptime = io_blocktime - (mn_now - prev_mn_now); 4140 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2363 4141
2364 if (sleeptime > waittime - backend_fudge) 4142 if (sleeptime > waittime - backend_mintime)
2365 sleeptime = waittime - backend_fudge; 4143 sleeptime = waittime - backend_mintime;
2366 4144
2367 if (expect_true (sleeptime > 0.)) 4145 if (ecb_expect_true (sleeptime > EV_TS_CONST (0.)))
2368 { 4146 {
2369 ev_sleep (sleeptime); 4147 ev_sleep (sleeptime);
2370 waittime -= sleeptime; 4148 waittime -= sleeptime;
2371 } 4149 }
2372 } 4150 }
2373 } 4151 }
2374 4152
2375#if EV_FEATURE_API 4153#if EV_FEATURE_API
2376 ++loop_count; 4154 ++loop_count;
2377#endif 4155#endif
2378 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 4156 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2379 backend_poll (EV_A_ waittime); 4157 backend_poll (EV_A_ waittime);
2380 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 4158 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
4159
4160 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
4161
4162 ECB_MEMORY_FENCE_ACQUIRE;
4163 if (pipe_write_skipped)
4164 {
4165 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
4166 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
4167 }
2381 4168
2382 /* update ev_rt_now, do magic */ 4169 /* update ev_rt_now, do magic */
2383 time_update (EV_A_ waittime + sleeptime); 4170 time_update (EV_A_ waittime + sleeptime);
2384 } 4171 }
2385 4172
… …
2394 idle_reify (EV_A); 4181 idle_reify (EV_A);
2395#endif 4182#endif
2396 4183
2397#if EV_CHECK_ENABLE 4184#if EV_CHECK_ENABLE
2398 /* queue check watchers, to be executed first */ 4185 /* queue check watchers, to be executed first */
2399 if (expect_false (checkcnt)) 4186 if (ecb_expect_false (checkcnt))
2400 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 4187 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2401#endif 4188#endif
2402 4189
2403 EV_INVOKE_PENDING; 4190 EV_INVOKE_PENDING;
2404 } 4191 }
2405 while (expect_true ( 4192 while (ecb_expect_true (
2406 activecnt 4193 activecnt
2407 && !loop_done 4194 && !loop_done
2408 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 4195 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2409 )); 4196 ));
2410 4197
2411 if (loop_done == EVUNLOOP_ONE) 4198 if (loop_done == EVBREAK_ONE)
2412 loop_done = EVUNLOOP_CANCEL; 4199 loop_done = EVBREAK_CANCEL;
2413 4200
2414#if EV_FEATURE_API 4201#if EV_FEATURE_API
2415 --loop_depth; 4202 --loop_depth;
2416#endif 4203#endif
4204
4205 return activecnt;
2417} 4206}
2418 4207
2419void 4208void
2420ev_unloop (EV_P_ int how) 4209ev_break (EV_P_ int how) EV_NOEXCEPT
2421{ 4210{
2422 loop_done = how; 4211 loop_done = how;
2423} 4212}
2424 4213
2425void 4214void
2426ev_ref (EV_P) 4215ev_ref (EV_P) EV_NOEXCEPT
2427{ 4216{
2428 ++activecnt; 4217 ++activecnt;
2429} 4218}
2430 4219
2431void 4220void
2432ev_unref (EV_P) 4221ev_unref (EV_P) EV_NOEXCEPT
2433{ 4222{
2434 --activecnt; 4223 --activecnt;
2435} 4224}
2436 4225
2437void 4226void
2438ev_now_update (EV_P) 4227ev_now_update (EV_P) EV_NOEXCEPT
2439{ 4228{
2440 time_update (EV_A_ 1e100); 4229 time_update (EV_A_ EV_TSTAMP_HUGE);
2441} 4230}
2442 4231
2443void 4232void
2444ev_suspend (EV_P) 4233ev_suspend (EV_P) EV_NOEXCEPT
2445{ 4234{
2446 ev_now_update (EV_A); 4235 ev_now_update (EV_A);
2447} 4236}
2448 4237
2449void 4238void
2450ev_resume (EV_P) 4239ev_resume (EV_P) EV_NOEXCEPT
2451{ 4240{
2452 ev_tstamp mn_prev = mn_now; 4241 ev_tstamp mn_prev = mn_now;
2453 4242
2454 ev_now_update (EV_A); 4243 ev_now_update (EV_A);
2455 timers_reschedule (EV_A_ mn_now - mn_prev); 4244 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2472inline_size void 4261inline_size void
2473wlist_del (WL *head, WL elem) 4262wlist_del (WL *head, WL elem)
2474{ 4263{
2475 while (*head) 4264 while (*head)
2476 { 4265 {
2477 if (expect_true (*head == elem)) 4266 if (ecb_expect_true (*head == elem))
2478 { 4267 {
2479 *head = elem->next; 4268 *head = elem->next;
2480 break; 4269 break;
2481 } 4270 }
2482 4271
… …
2494 w->pending = 0; 4283 w->pending = 0;
2495 } 4284 }
2496} 4285}
2497 4286
2498int 4287int
2499ev_clear_pending (EV_P_ void *w) 4288ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
2500{ 4289{
2501 W w_ = (W)w; 4290 W w_ = (W)w;
2502 int pending = w_->pending; 4291 int pending = w_->pending;
2503 4292
2504 if (expect_true (pending)) 4293 if (ecb_expect_true (pending))
2505 { 4294 {
2506 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 4295 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2507 p->w = (W)&pending_w; 4296 p->w = (W)&pending_w;
2508 w_->pending = 0; 4297 w_->pending = 0;
2509 return p->events; 4298 return p->events;
… …
2536 w->active = 0; 4325 w->active = 0;
2537} 4326}
2538 4327
2539/*****************************************************************************/ 4328/*****************************************************************************/
2540 4329
2541void noinline 4330ecb_noinline
4331void
2542ev_io_start (EV_P_ ev_io *w) 4332ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
2543{ 4333{
2544 int fd = w->fd; 4334 int fd = w->fd;
2545 4335
2546 if (expect_false (ev_is_active (w))) 4336 if (ecb_expect_false (ev_is_active (w)))
2547 return; 4337 return;
2548 4338
2549 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 4339 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2550 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 4340 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2551 4341
4342#if EV_VERIFY >= 2
4343 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
4344#endif
2552 EV_FREQUENT_CHECK; 4345 EV_FREQUENT_CHECK;
2553 4346
2554 ev_start (EV_A_ (W)w, 1); 4347 ev_start (EV_A_ (W)w, 1);
2555 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 4348 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
2556 wlist_add (&anfds[fd].head, (WL)w); 4349 wlist_add (&anfds[fd].head, (WL)w);
4350
4351 /* common bug, apparently */
4352 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
2557 4353
2558 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 4354 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2559 w->events &= ~EV__IOFDSET; 4355 w->events &= ~EV__IOFDSET;
2560 4356
2561 EV_FREQUENT_CHECK; 4357 EV_FREQUENT_CHECK;
2562} 4358}
2563 4359
2564void noinline 4360ecb_noinline
4361void
2565ev_io_stop (EV_P_ ev_io *w) 4362ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
2566{ 4363{
2567 clear_pending (EV_A_ (W)w); 4364 clear_pending (EV_A_ (W)w);
2568 if (expect_false (!ev_is_active (w))) 4365 if (ecb_expect_false (!ev_is_active (w)))
2569 return; 4366 return;
2570 4367
2571 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 4368 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2572 4369
4370#if EV_VERIFY >= 2
4371 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
4372#endif
2573 EV_FREQUENT_CHECK; 4373 EV_FREQUENT_CHECK;
2574 4374
2575 wlist_del (&anfds[w->fd].head, (WL)w); 4375 wlist_del (&anfds[w->fd].head, (WL)w);
2576 ev_stop (EV_A_ (W)w); 4376 ev_stop (EV_A_ (W)w);
2577 4377
2578 fd_change (EV_A_ w->fd, 1); 4378 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2579 4379
2580 EV_FREQUENT_CHECK; 4380 EV_FREQUENT_CHECK;
2581} 4381}
2582 4382
2583void noinline 4383ecb_noinline
4384void
2584ev_timer_start (EV_P_ ev_timer *w) 4385ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
2585{ 4386{
2586 if (expect_false (ev_is_active (w))) 4387 if (ecb_expect_false (ev_is_active (w)))
2587 return; 4388 return;
2588 4389
2589 ev_at (w) += mn_now; 4390 ev_at (w) += mn_now;
2590 4391
2591 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 4392 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2592 4393
2593 EV_FREQUENT_CHECK; 4394 EV_FREQUENT_CHECK;
2594 4395
2595 ++timercnt; 4396 ++timercnt;
2596 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 4397 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
2597 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 4398 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
2598 ANHE_w (timers [ev_active (w)]) = (WT)w; 4399 ANHE_w (timers [ev_active (w)]) = (WT)w;
2599 ANHE_at_cache (timers [ev_active (w)]); 4400 ANHE_at_cache (timers [ev_active (w)]);
2600 upheap (timers, ev_active (w)); 4401 upheap (timers, ev_active (w));
2601 4402
2602 EV_FREQUENT_CHECK; 4403 EV_FREQUENT_CHECK;
2603 4404
2604 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 4405 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2605} 4406}
2606 4407
2607void noinline 4408ecb_noinline
4409void
2608ev_timer_stop (EV_P_ ev_timer *w) 4410ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
2609{ 4411{
2610 clear_pending (EV_A_ (W)w); 4412 clear_pending (EV_A_ (W)w);
2611 if (expect_false (!ev_is_active (w))) 4413 if (ecb_expect_false (!ev_is_active (w)))
2612 return; 4414 return;
2613 4415
2614 EV_FREQUENT_CHECK; 4416 EV_FREQUENT_CHECK;
2615 4417
2616 { 4418 {
… …
2618 4420
2619 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 4421 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2620 4422
2621 --timercnt; 4423 --timercnt;
2622 4424
2623 if (expect_true (active < timercnt + HEAP0)) 4425 if (ecb_expect_true (active < timercnt + HEAP0))
2624 { 4426 {
2625 timers [active] = timers [timercnt + HEAP0]; 4427 timers [active] = timers [timercnt + HEAP0];
2626 adjustheap (timers, timercnt, active); 4428 adjustheap (timers, timercnt, active);
2627 } 4429 }
2628 } 4430 }
… …
2632 ev_stop (EV_A_ (W)w); 4434 ev_stop (EV_A_ (W)w);
2633 4435
2634 EV_FREQUENT_CHECK; 4436 EV_FREQUENT_CHECK;
2635} 4437}
2636 4438
2637void noinline 4439ecb_noinline
4440void
2638ev_timer_again (EV_P_ ev_timer *w) 4441ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
2639{ 4442{
2640 EV_FREQUENT_CHECK; 4443 EV_FREQUENT_CHECK;
4444
4445 clear_pending (EV_A_ (W)w);
2641 4446
2642 if (ev_is_active (w)) 4447 if (ev_is_active (w))
2643 { 4448 {
2644 if (w->repeat) 4449 if (w->repeat)
2645 { 4450 {
… …
2658 4463
2659 EV_FREQUENT_CHECK; 4464 EV_FREQUENT_CHECK;
2660} 4465}
2661 4466
2662ev_tstamp 4467ev_tstamp
2663ev_timer_remaining (EV_P_ ev_timer *w) 4468ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
2664{ 4469{
2665 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4470 return ev_at (w) - (ev_is_active (w) ? mn_now : EV_TS_CONST (0.));
2666} 4471}
2667 4472
2668#if EV_PERIODIC_ENABLE 4473#if EV_PERIODIC_ENABLE
2669void noinline 4474ecb_noinline
4475void
2670ev_periodic_start (EV_P_ ev_periodic *w) 4476ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
2671{ 4477{
2672 if (expect_false (ev_is_active (w))) 4478 if (ecb_expect_false (ev_is_active (w)))
2673 return; 4479 return;
4480
4481#if EV_USE_TIMERFD
4482 if (timerfd == -2)
4483 evtimerfd_init (EV_A);
4484#endif
2674 4485
2675 if (w->reschedule_cb) 4486 if (w->reschedule_cb)
2676 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4487 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2677 else if (w->interval) 4488 else if (w->interval)
2678 { 4489 {
2679 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 4490 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2680 /* this formula differs from the one in periodic_reify because we do not always round up */ 4491 periodic_recalc (EV_A_ w);
2681 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2682 } 4492 }
2683 else 4493 else
2684 ev_at (w) = w->offset; 4494 ev_at (w) = w->offset;
2685 4495
2686 EV_FREQUENT_CHECK; 4496 EV_FREQUENT_CHECK;
2687 4497
2688 ++periodiccnt; 4498 ++periodiccnt;
2689 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4499 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2690 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4500 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
2691 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4501 ANHE_w (periodics [ev_active (w)]) = (WT)w;
2692 ANHE_at_cache (periodics [ev_active (w)]); 4502 ANHE_at_cache (periodics [ev_active (w)]);
2693 upheap (periodics, ev_active (w)); 4503 upheap (periodics, ev_active (w));
2694 4504
2695 EV_FREQUENT_CHECK; 4505 EV_FREQUENT_CHECK;
2696 4506
2697 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4507 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2698} 4508}
2699 4509
2700void noinline 4510ecb_noinline
4511void
2701ev_periodic_stop (EV_P_ ev_periodic *w) 4512ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
2702{ 4513{
2703 clear_pending (EV_A_ (W)w); 4514 clear_pending (EV_A_ (W)w);
2704 if (expect_false (!ev_is_active (w))) 4515 if (ecb_expect_false (!ev_is_active (w)))
2705 return; 4516 return;
2706 4517
2707 EV_FREQUENT_CHECK; 4518 EV_FREQUENT_CHECK;
2708 4519
2709 { 4520 {
… …
2711 4522
2712 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 4523 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2713 4524
2714 --periodiccnt; 4525 --periodiccnt;
2715 4526
2716 if (expect_true (active < periodiccnt + HEAP0)) 4527 if (ecb_expect_true (active < periodiccnt + HEAP0))
2717 { 4528 {
2718 periodics [active] = periodics [periodiccnt + HEAP0]; 4529 periodics [active] = periodics [periodiccnt + HEAP0];
2719 adjustheap (periodics, periodiccnt, active); 4530 adjustheap (periodics, periodiccnt, active);
2720 } 4531 }
2721 } 4532 }
… …
2723 ev_stop (EV_A_ (W)w); 4534 ev_stop (EV_A_ (W)w);
2724 4535
2725 EV_FREQUENT_CHECK; 4536 EV_FREQUENT_CHECK;
2726} 4537}
2727 4538
2728void noinline 4539ecb_noinline
4540void
2729ev_periodic_again (EV_P_ ev_periodic *w) 4541ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
2730{ 4542{
2731 /* TODO: use adjustheap and recalculation */ 4543 /* TODO: use adjustheap and recalculation */
2732 ev_periodic_stop (EV_A_ w); 4544 ev_periodic_stop (EV_A_ w);
2733 ev_periodic_start (EV_A_ w); 4545 ev_periodic_start (EV_A_ w);
2734} 4546}
… …
2738# define SA_RESTART 0 4550# define SA_RESTART 0
2739#endif 4551#endif
2740 4552
2741#if EV_SIGNAL_ENABLE 4553#if EV_SIGNAL_ENABLE
2742 4554
2743void noinline 4555ecb_noinline
4556void
2744ev_signal_start (EV_P_ ev_signal *w) 4557ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
2745{ 4558{
2746 if (expect_false (ev_is_active (w))) 4559 if (ecb_expect_false (ev_is_active (w)))
2747 return; 4560 return;
2748 4561
2749 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4562 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2750 4563
2751#if EV_MULTIPLICITY 4564#if EV_MULTIPLICITY
2752 assert (("libev: a signal must not be attached to two different loops", 4565 assert (("libev: a signal must not be attached to two different loops",
2753 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4566 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2754 4567
2755 signals [w->signum - 1].loop = EV_A; 4568 signals [w->signum - 1].loop = EV_A;
4569 ECB_MEMORY_FENCE_RELEASE;
2756#endif 4570#endif
2757 4571
2758 EV_FREQUENT_CHECK; 4572 EV_FREQUENT_CHECK;
2759 4573
2760#if EV_USE_SIGNALFD 4574#if EV_USE_SIGNALFD
… …
2807 sa.sa_handler = ev_sighandler; 4621 sa.sa_handler = ev_sighandler;
2808 sigfillset (&sa.sa_mask); 4622 sigfillset (&sa.sa_mask);
2809 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 4623 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2810 sigaction (w->signum, &sa, 0); 4624 sigaction (w->signum, &sa, 0);
2811 4625
4626 if (origflags & EVFLAG_NOSIGMASK)
4627 {
2812 sigemptyset (&sa.sa_mask); 4628 sigemptyset (&sa.sa_mask);
2813 sigaddset (&sa.sa_mask, w->signum); 4629 sigaddset (&sa.sa_mask, w->signum);
2814 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 4630 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
4631 }
2815#endif 4632#endif
2816 } 4633 }
2817 4634
2818 EV_FREQUENT_CHECK; 4635 EV_FREQUENT_CHECK;
2819} 4636}
2820 4637
2821void noinline 4638ecb_noinline
4639void
2822ev_signal_stop (EV_P_ ev_signal *w) 4640ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
2823{ 4641{
2824 clear_pending (EV_A_ (W)w); 4642 clear_pending (EV_A_ (W)w);
2825 if (expect_false (!ev_is_active (w))) 4643 if (ecb_expect_false (!ev_is_active (w)))
2826 return; 4644 return;
2827 4645
2828 EV_FREQUENT_CHECK; 4646 EV_FREQUENT_CHECK;
2829 4647
2830 wlist_del (&signals [w->signum - 1].head, (WL)w); 4648 wlist_del (&signals [w->signum - 1].head, (WL)w);
… …
2858#endif 4676#endif
2859 4677
2860#if EV_CHILD_ENABLE 4678#if EV_CHILD_ENABLE
2861 4679
2862void 4680void
2863ev_child_start (EV_P_ ev_child *w) 4681ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
2864{ 4682{
2865#if EV_MULTIPLICITY 4683#if EV_MULTIPLICITY
2866 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4684 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2867#endif 4685#endif
2868 if (expect_false (ev_is_active (w))) 4686 if (ecb_expect_false (ev_is_active (w)))
2869 return; 4687 return;
2870 4688
2871 EV_FREQUENT_CHECK; 4689 EV_FREQUENT_CHECK;
2872 4690
2873 ev_start (EV_A_ (W)w, 1); 4691 ev_start (EV_A_ (W)w, 1);
… …
2875 4693
2876 EV_FREQUENT_CHECK; 4694 EV_FREQUENT_CHECK;
2877} 4695}
2878 4696
2879void 4697void
2880ev_child_stop (EV_P_ ev_child *w) 4698ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
2881{ 4699{
2882 clear_pending (EV_A_ (W)w); 4700 clear_pending (EV_A_ (W)w);
2883 if (expect_false (!ev_is_active (w))) 4701 if (ecb_expect_false (!ev_is_active (w)))
2884 return; 4702 return;
2885 4703
2886 EV_FREQUENT_CHECK; 4704 EV_FREQUENT_CHECK;
2887 4705
2888 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w); 4706 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
… …
2902 4720
2903#define DEF_STAT_INTERVAL 5.0074891 4721#define DEF_STAT_INTERVAL 5.0074891
2904#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4722#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2905#define MIN_STAT_INTERVAL 0.1074891 4723#define MIN_STAT_INTERVAL 0.1074891
2906 4724
2907static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4725ecb_noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2908 4726
2909#if EV_USE_INOTIFY 4727#if EV_USE_INOTIFY
2910 4728
2911/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ 4729/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
2912# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4730# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2913 4731
2914static void noinline 4732ecb_noinline
4733static void
2915infy_add (EV_P_ ev_stat *w) 4734infy_add (EV_P_ ev_stat *w)
2916{ 4735{
2917 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); 4736 w->wd = inotify_add_watch (fs_fd, w->path,
4737 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4738 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4739 | IN_DONT_FOLLOW | IN_MASK_ADD);
2918 4740
2919 if (w->wd >= 0) 4741 if (w->wd >= 0)
2920 { 4742 {
2921 struct statfs sfs; 4743 struct statfs sfs;
2922 4744
… …
2926 4748
2927 if (!fs_2625) 4749 if (!fs_2625)
2928 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4750 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2929 else if (!statfs (w->path, &sfs) 4751 else if (!statfs (w->path, &sfs)
2930 && (sfs.f_type == 0x1373 /* devfs */ 4752 && (sfs.f_type == 0x1373 /* devfs */
4753 || sfs.f_type == 0x4006 /* fat */
4754 || sfs.f_type == 0x4d44 /* msdos */
2931 || sfs.f_type == 0xEF53 /* ext2/3 */ 4755 || sfs.f_type == 0xEF53 /* ext2/3 */
4756 || sfs.f_type == 0x72b6 /* jffs2 */
4757 || sfs.f_type == 0x858458f6 /* ramfs */
4758 || sfs.f_type == 0x5346544e /* ntfs */
2932 || sfs.f_type == 0x3153464a /* jfs */ 4759 || sfs.f_type == 0x3153464a /* jfs */
4760 || sfs.f_type == 0x9123683e /* btrfs */
2933 || sfs.f_type == 0x52654973 /* reiser3 */ 4761 || sfs.f_type == 0x52654973 /* reiser3 */
2934 || sfs.f_type == 0x01021994 /* tempfs */ 4762 || sfs.f_type == 0x01021994 /* tmpfs */
2935 || sfs.f_type == 0x58465342 /* xfs */)) 4763 || sfs.f_type == 0x58465342 /* xfs */))
2936 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4764 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
2937 else 4765 else
2938 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4766 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2939 } 4767 }
… …
2960 if (!pend || pend == path) 4788 if (!pend || pend == path)
2961 break; 4789 break;
2962 4790
2963 *pend = 0; 4791 *pend = 0;
2964 w->wd = inotify_add_watch (fs_fd, path, mask); 4792 w->wd = inotify_add_watch (fs_fd, path, mask);
2965 } 4793 }
2966 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 4794 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2967 } 4795 }
2968 } 4796 }
2969 4797
2970 if (w->wd >= 0) 4798 if (w->wd >= 0)
… …
2974 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4802 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2975 ev_timer_again (EV_A_ &w->timer); 4803 ev_timer_again (EV_A_ &w->timer);
2976 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4804 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2977} 4805}
2978 4806
2979static void noinline 4807ecb_noinline
4808static void
2980infy_del (EV_P_ ev_stat *w) 4809infy_del (EV_P_ ev_stat *w)
2981{ 4810{
2982 int slot; 4811 int slot;
2983 int wd = w->wd; 4812 int wd = w->wd;
2984 4813
… …
2991 4820
2992 /* remove this watcher, if others are watching it, they will rearm */ 4821 /* remove this watcher, if others are watching it, they will rearm */
2993 inotify_rm_watch (fs_fd, wd); 4822 inotify_rm_watch (fs_fd, wd);
2994} 4823}
2995 4824
2996static void noinline 4825ecb_noinline
4826static void
2997infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4827infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2998{ 4828{
2999 if (slot < 0) 4829 if (slot < 0)
3000 /* overflow, need to check for all hash slots */ 4830 /* overflow, need to check for all hash slots */
3001 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4831 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
3037 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4867 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3038 ofs += sizeof (struct inotify_event) + ev->len; 4868 ofs += sizeof (struct inotify_event) + ev->len;
3039 } 4869 }
3040} 4870}
3041 4871
3042inline_size unsigned int
3043ev_linux_version (void)
3044{
3045 struct utsname buf;
3046 unsigned int v;
3047 int i;
3048 char *p = buf.release;
3049
3050 if (uname (&buf))
3051 return 0;
3052
3053 for (i = 3+1; --i; )
3054 {
3055 unsigned int c = 0;
3056
3057 for (;;)
3058 {
3059 if (*p >= '0' && *p <= '9')
3060 c = c * 10 + *p++ - '0';
3061 else
3062 {
3063 p += *p == '.';
3064 break;
3065 }
3066 }
3067
3068 v = (v << 8) | c;
3069 }
3070
3071 return v;
3072}
3073
3074inline_size void 4872inline_size ecb_cold
4873void
3075ev_check_2625 (EV_P) 4874ev_check_2625 (EV_P)
3076{ 4875{
3077 /* kernels < 2.6.25 are borked 4876 /* kernels < 2.6.25 are borked
3078 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4877 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3079 */ 4878 */
… …
3084} 4883}
3085 4884
3086inline_size int 4885inline_size int
3087infy_newfd (void) 4886infy_newfd (void)
3088{ 4887{
3089#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4888#if defined IN_CLOEXEC && defined IN_NONBLOCK
3090 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4889 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3091 if (fd >= 0) 4890 if (fd >= 0)
3092 return fd; 4891 return fd;
3093#endif 4892#endif
3094 return inotify_init (); 4893 return inotify_init ();
… …
3169#else 4968#else
3170# define EV_LSTAT(p,b) lstat (p, b) 4969# define EV_LSTAT(p,b) lstat (p, b)
3171#endif 4970#endif
3172 4971
3173void 4972void
3174ev_stat_stat (EV_P_ ev_stat *w) 4973ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
3175{ 4974{
3176 if (lstat (w->path, &w->attr) < 0) 4975 if (lstat (w->path, &w->attr) < 0)
3177 w->attr.st_nlink = 0; 4976 w->attr.st_nlink = 0;
3178 else if (!w->attr.st_nlink) 4977 else if (!w->attr.st_nlink)
3179 w->attr.st_nlink = 1; 4978 w->attr.st_nlink = 1;
3180} 4979}
3181 4980
3182static void noinline 4981ecb_noinline
4982static void
3183stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4983stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3184{ 4984{
3185 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4985 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3186 4986
3187 ev_statdata prev = w->attr; 4987 ev_statdata prev = w->attr;
… …
3218 ev_feed_event (EV_A_ w, EV_STAT); 5018 ev_feed_event (EV_A_ w, EV_STAT);
3219 } 5019 }
3220} 5020}
3221 5021
3222void 5022void
3223ev_stat_start (EV_P_ ev_stat *w) 5023ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
3224{ 5024{
3225 if (expect_false (ev_is_active (w))) 5025 if (ecb_expect_false (ev_is_active (w)))
3226 return; 5026 return;
3227 5027
3228 ev_stat_stat (EV_A_ w); 5028 ev_stat_stat (EV_A_ w);
3229 5029
3230 if (w->interval < MIN_STAT_INTERVAL && w->interval) 5030 if (w->interval < MIN_STAT_INTERVAL && w->interval)
… …
3249 5049
3250 EV_FREQUENT_CHECK; 5050 EV_FREQUENT_CHECK;
3251} 5051}
3252 5052
3253void 5053void
3254ev_stat_stop (EV_P_ ev_stat *w) 5054ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
3255{ 5055{
3256 clear_pending (EV_A_ (W)w); 5056 clear_pending (EV_A_ (W)w);
3257 if (expect_false (!ev_is_active (w))) 5057 if (ecb_expect_false (!ev_is_active (w)))
3258 return; 5058 return;
3259 5059
3260 EV_FREQUENT_CHECK; 5060 EV_FREQUENT_CHECK;
3261 5061
3262#if EV_USE_INOTIFY 5062#if EV_USE_INOTIFY
… …
3275} 5075}
3276#endif 5076#endif
3277 5077
3278#if EV_IDLE_ENABLE 5078#if EV_IDLE_ENABLE
3279void 5079void
3280ev_idle_start (EV_P_ ev_idle *w) 5080ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
3281{ 5081{
3282 if (expect_false (ev_is_active (w))) 5082 if (ecb_expect_false (ev_is_active (w)))
3283 return; 5083 return;
3284 5084
3285 pri_adjust (EV_A_ (W)w); 5085 pri_adjust (EV_A_ (W)w);
3286 5086
3287 EV_FREQUENT_CHECK; 5087 EV_FREQUENT_CHECK;
… …
3290 int active = ++idlecnt [ABSPRI (w)]; 5090 int active = ++idlecnt [ABSPRI (w)];
3291 5091
3292 ++idleall; 5092 ++idleall;
3293 ev_start (EV_A_ (W)w, active); 5093 ev_start (EV_A_ (W)w, active);
3294 5094
3295 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 5095 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
3296 idles [ABSPRI (w)][active - 1] = w; 5096 idles [ABSPRI (w)][active - 1] = w;
3297 } 5097 }
3298 5098
3299 EV_FREQUENT_CHECK; 5099 EV_FREQUENT_CHECK;
3300} 5100}
3301 5101
3302void 5102void
3303ev_idle_stop (EV_P_ ev_idle *w) 5103ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
3304{ 5104{
3305 clear_pending (EV_A_ (W)w); 5105 clear_pending (EV_A_ (W)w);
3306 if (expect_false (!ev_is_active (w))) 5106 if (ecb_expect_false (!ev_is_active (w)))
3307 return; 5107 return;
3308 5108
3309 EV_FREQUENT_CHECK; 5109 EV_FREQUENT_CHECK;
3310 5110
3311 { 5111 {
… …
3322} 5122}
3323#endif 5123#endif
3324 5124
3325#if EV_PREPARE_ENABLE 5125#if EV_PREPARE_ENABLE
3326void 5126void
3327ev_prepare_start (EV_P_ ev_prepare *w) 5127ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
3328{ 5128{
3329 if (expect_false (ev_is_active (w))) 5129 if (ecb_expect_false (ev_is_active (w)))
3330 return; 5130 return;
3331 5131
3332 EV_FREQUENT_CHECK; 5132 EV_FREQUENT_CHECK;
3333 5133
3334 ev_start (EV_A_ (W)w, ++preparecnt); 5134 ev_start (EV_A_ (W)w, ++preparecnt);
3335 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 5135 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
3336 prepares [preparecnt - 1] = w; 5136 prepares [preparecnt - 1] = w;
3337 5137
3338 EV_FREQUENT_CHECK; 5138 EV_FREQUENT_CHECK;
3339} 5139}
3340 5140
3341void 5141void
3342ev_prepare_stop (EV_P_ ev_prepare *w) 5142ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
3343{ 5143{
3344 clear_pending (EV_A_ (W)w); 5144 clear_pending (EV_A_ (W)w);
3345 if (expect_false (!ev_is_active (w))) 5145 if (ecb_expect_false (!ev_is_active (w)))
3346 return; 5146 return;
3347 5147
3348 EV_FREQUENT_CHECK; 5148 EV_FREQUENT_CHECK;
3349 5149
3350 { 5150 {
… …
3360} 5160}
3361#endif 5161#endif
3362 5162
3363#if EV_CHECK_ENABLE 5163#if EV_CHECK_ENABLE
3364void 5164void
3365ev_check_start (EV_P_ ev_check *w) 5165ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
3366{ 5166{
3367 if (expect_false (ev_is_active (w))) 5167 if (ecb_expect_false (ev_is_active (w)))
3368 return; 5168 return;
3369 5169
3370 EV_FREQUENT_CHECK; 5170 EV_FREQUENT_CHECK;
3371 5171
3372 ev_start (EV_A_ (W)w, ++checkcnt); 5172 ev_start (EV_A_ (W)w, ++checkcnt);
3373 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 5173 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
3374 checks [checkcnt - 1] = w; 5174 checks [checkcnt - 1] = w;
3375 5175
3376 EV_FREQUENT_CHECK; 5176 EV_FREQUENT_CHECK;
3377} 5177}
3378 5178
3379void 5179void
3380ev_check_stop (EV_P_ ev_check *w) 5180ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
3381{ 5181{
3382 clear_pending (EV_A_ (W)w); 5182 clear_pending (EV_A_ (W)w);
3383 if (expect_false (!ev_is_active (w))) 5183 if (ecb_expect_false (!ev_is_active (w)))
3384 return; 5184 return;
3385 5185
3386 EV_FREQUENT_CHECK; 5186 EV_FREQUENT_CHECK;
3387 5187
3388 { 5188 {
… …
3397 EV_FREQUENT_CHECK; 5197 EV_FREQUENT_CHECK;
3398} 5198}
3399#endif 5199#endif
3400 5200
3401#if EV_EMBED_ENABLE 5201#if EV_EMBED_ENABLE
3402void noinline 5202ecb_noinline
5203void
3403ev_embed_sweep (EV_P_ ev_embed *w) 5204ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
3404{ 5205{
3405 ev_loop (w->other, EVLOOP_NONBLOCK); 5206 ev_run (w->other, EVRUN_NOWAIT);
3406} 5207}
3407 5208
3408static void 5209static void
3409embed_io_cb (EV_P_ ev_io *io, int revents) 5210embed_io_cb (EV_P_ ev_io *io, int revents)
3410{ 5211{
3411 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 5212 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3412 5213
3413 if (ev_cb (w)) 5214 if (ev_cb (w))
3414 ev_feed_event (EV_A_ (W)w, EV_EMBED); 5215 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3415 else 5216 else
3416 ev_loop (w->other, EVLOOP_NONBLOCK); 5217 ev_run (w->other, EVRUN_NOWAIT);
3417} 5218}
3418 5219
3419static void 5220static void
3420embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 5221embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3421{ 5222{
… …
3425 EV_P = w->other; 5226 EV_P = w->other;
3426 5227
3427 while (fdchangecnt) 5228 while (fdchangecnt)
3428 { 5229 {
3429 fd_reify (EV_A); 5230 fd_reify (EV_A);
3430 ev_loop (EV_A_ EVLOOP_NONBLOCK); 5231 ev_run (EV_A_ EVRUN_NOWAIT);
3431 } 5232 }
3432 } 5233 }
3433} 5234}
3434 5235
5236#if EV_FORK_ENABLE
3435static void 5237static void
3436embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) 5238embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
3437{ 5239{
3438 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 5240 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3439 5241
… …
3441 5243
3442 { 5244 {
3443 EV_P = w->other; 5245 EV_P = w->other;
3444 5246
3445 ev_loop_fork (EV_A); 5247 ev_loop_fork (EV_A);
3446 ev_loop (EV_A_ EVLOOP_NONBLOCK); 5248 ev_run (EV_A_ EVRUN_NOWAIT);
3447 } 5249 }
3448 5250
3449 ev_embed_start (EV_A_ w); 5251 ev_embed_start (EV_A_ w);
3450} 5252}
5253#endif
3451 5254
3452#if 0 5255#if 0
3453static void 5256static void
3454embed_idle_cb (EV_P_ ev_idle *idle, int revents) 5257embed_idle_cb (EV_P_ ev_idle *idle, int revents)
3455{ 5258{
3456 ev_idle_stop (EV_A_ idle); 5259 ev_idle_stop (EV_A_ idle);
3457} 5260}
3458#endif 5261#endif
3459 5262
3460void 5263void
3461ev_embed_start (EV_P_ ev_embed *w) 5264ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
3462{ 5265{
3463 if (expect_false (ev_is_active (w))) 5266 if (ecb_expect_false (ev_is_active (w)))
3464 return; 5267 return;
3465 5268
3466 { 5269 {
3467 EV_P = w->other; 5270 EV_P = w->other;
3468 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 5271 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
… …
3476 5279
3477 ev_prepare_init (&w->prepare, embed_prepare_cb); 5280 ev_prepare_init (&w->prepare, embed_prepare_cb);
3478 ev_set_priority (&w->prepare, EV_MINPRI); 5281 ev_set_priority (&w->prepare, EV_MINPRI);
3479 ev_prepare_start (EV_A_ &w->prepare); 5282 ev_prepare_start (EV_A_ &w->prepare);
3480 5283
5284#if EV_FORK_ENABLE
3481 ev_fork_init (&w->fork, embed_fork_cb); 5285 ev_fork_init (&w->fork, embed_fork_cb);
3482 ev_fork_start (EV_A_ &w->fork); 5286 ev_fork_start (EV_A_ &w->fork);
5287#endif
3483 5288
3484 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 5289 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
3485 5290
3486 ev_start (EV_A_ (W)w, 1); 5291 ev_start (EV_A_ (W)w, 1);
3487 5292
3488 EV_FREQUENT_CHECK; 5293 EV_FREQUENT_CHECK;
3489} 5294}
3490 5295
3491void 5296void
3492ev_embed_stop (EV_P_ ev_embed *w) 5297ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
3493{ 5298{
3494 clear_pending (EV_A_ (W)w); 5299 clear_pending (EV_A_ (W)w);
3495 if (expect_false (!ev_is_active (w))) 5300 if (ecb_expect_false (!ev_is_active (w)))
3496 return; 5301 return;
3497 5302
3498 EV_FREQUENT_CHECK; 5303 EV_FREQUENT_CHECK;
3499 5304
3500 ev_io_stop (EV_A_ &w->io); 5305 ev_io_stop (EV_A_ &w->io);
3501 ev_prepare_stop (EV_A_ &w->prepare); 5306 ev_prepare_stop (EV_A_ &w->prepare);
5307#if EV_FORK_ENABLE
3502 ev_fork_stop (EV_A_ &w->fork); 5308 ev_fork_stop (EV_A_ &w->fork);
5309#endif
3503 5310
3504 ev_stop (EV_A_ (W)w); 5311 ev_stop (EV_A_ (W)w);
3505 5312
3506 EV_FREQUENT_CHECK; 5313 EV_FREQUENT_CHECK;
3507} 5314}
3508#endif 5315#endif
3509 5316
3510#if EV_FORK_ENABLE 5317#if EV_FORK_ENABLE
3511void 5318void
3512ev_fork_start (EV_P_ ev_fork *w) 5319ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
3513{ 5320{
3514 if (expect_false (ev_is_active (w))) 5321 if (ecb_expect_false (ev_is_active (w)))
3515 return; 5322 return;
3516 5323
3517 EV_FREQUENT_CHECK; 5324 EV_FREQUENT_CHECK;
3518 5325
3519 ev_start (EV_A_ (W)w, ++forkcnt); 5326 ev_start (EV_A_ (W)w, ++forkcnt);
3520 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 5327 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
3521 forks [forkcnt - 1] = w; 5328 forks [forkcnt - 1] = w;
3522 5329
3523 EV_FREQUENT_CHECK; 5330 EV_FREQUENT_CHECK;
3524} 5331}
3525 5332
3526void 5333void
3527ev_fork_stop (EV_P_ ev_fork *w) 5334ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
3528{ 5335{
3529 clear_pending (EV_A_ (W)w); 5336 clear_pending (EV_A_ (W)w);
3530 if (expect_false (!ev_is_active (w))) 5337 if (ecb_expect_false (!ev_is_active (w)))
3531 return; 5338 return;
3532 5339
3533 EV_FREQUENT_CHECK; 5340 EV_FREQUENT_CHECK;
3534 5341
3535 { 5342 {
… …
3543 5350
3544 EV_FREQUENT_CHECK; 5351 EV_FREQUENT_CHECK;
3545} 5352}
3546#endif 5353#endif
3547 5354
5355#if EV_CLEANUP_ENABLE
5356void
5357ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
5358{
5359 if (ecb_expect_false (ev_is_active (w)))
5360 return;
5361
5362 EV_FREQUENT_CHECK;
5363
5364 ev_start (EV_A_ (W)w, ++cleanupcnt);
5365 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
5366 cleanups [cleanupcnt - 1] = w;
5367
5368 /* cleanup watchers should never keep a refcount on the loop */
5369 ev_unref (EV_A);
5370 EV_FREQUENT_CHECK;
5371}
5372
5373void
5374ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
5375{
5376 clear_pending (EV_A_ (W)w);
5377 if (ecb_expect_false (!ev_is_active (w)))
5378 return;
5379
5380 EV_FREQUENT_CHECK;
5381 ev_ref (EV_A);
5382
5383 {
5384 int active = ev_active (w);
5385
5386 cleanups [active - 1] = cleanups [--cleanupcnt];
5387 ev_active (cleanups [active - 1]) = active;
5388 }
5389
5390 ev_stop (EV_A_ (W)w);
5391
5392 EV_FREQUENT_CHECK;
5393}
5394#endif
5395
3548#if EV_ASYNC_ENABLE 5396#if EV_ASYNC_ENABLE
3549void 5397void
3550ev_async_start (EV_P_ ev_async *w) 5398ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
3551{ 5399{
3552 if (expect_false (ev_is_active (w))) 5400 if (ecb_expect_false (ev_is_active (w)))
3553 return; 5401 return;
3554 5402
5403 w->sent = 0;
5404
3555 evpipe_init (EV_A); 5405 evpipe_init (EV_A);
3556 5406
3557 EV_FREQUENT_CHECK; 5407 EV_FREQUENT_CHECK;
3558 5408
3559 ev_start (EV_A_ (W)w, ++asynccnt); 5409 ev_start (EV_A_ (W)w, ++asynccnt);
3560 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 5410 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
3561 asyncs [asynccnt - 1] = w; 5411 asyncs [asynccnt - 1] = w;
3562 5412
3563 EV_FREQUENT_CHECK; 5413 EV_FREQUENT_CHECK;
3564} 5414}
3565 5415
3566void 5416void
3567ev_async_stop (EV_P_ ev_async *w) 5417ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
3568{ 5418{
3569 clear_pending (EV_A_ (W)w); 5419 clear_pending (EV_A_ (W)w);
3570 if (expect_false (!ev_is_active (w))) 5420 if (ecb_expect_false (!ev_is_active (w)))
3571 return; 5421 return;
3572 5422
3573 EV_FREQUENT_CHECK; 5423 EV_FREQUENT_CHECK;
3574 5424
3575 { 5425 {
… …
3583 5433
3584 EV_FREQUENT_CHECK; 5434 EV_FREQUENT_CHECK;
3585} 5435}
3586 5436
3587void 5437void
3588ev_async_send (EV_P_ ev_async *w) 5438ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
3589{ 5439{
3590 w->sent = 1; 5440 w->sent = 1;
3591 evpipe_write (EV_A_ &async_pending); 5441 evpipe_write (EV_A_ &async_pending);
3592} 5442}
3593#endif 5443#endif
… …
3630 5480
3631 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5481 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3632} 5482}
3633 5483
3634void 5484void
3635ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 5485ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
3636{ 5486{
3637 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5487 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3638
3639 if (expect_false (!once))
3640 {
3641 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
3642 return;
3643 }
3644 5488
3645 once->cb = cb; 5489 once->cb = cb;
3646 once->arg = arg; 5490 once->arg = arg;
3647 5491
3648 ev_init (&once->io, once_cb_io); 5492 ev_init (&once->io, once_cb_io);
… …
3661} 5505}
3662 5506
3663/*****************************************************************************/ 5507/*****************************************************************************/
3664 5508
3665#if EV_WALK_ENABLE 5509#if EV_WALK_ENABLE
5510ecb_cold
3666void 5511void
3667ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 5512ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
3668{ 5513{
3669 int i, j; 5514 int i, j;
3670 ev_watcher_list *wl, *wn; 5515 ev_watcher_list *wl, *wn;
3671 5516
3672 if (types & (EV_IO | EV_EMBED)) 5517 if (types & (EV_IO | EV_EMBED))
… …
3715 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 5560 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3716#endif 5561#endif
3717 5562
3718#if EV_IDLE_ENABLE 5563#if EV_IDLE_ENABLE
3719 if (types & EV_IDLE) 5564 if (types & EV_IDLE)
3720 for (j = NUMPRI; i--; ) 5565 for (j = NUMPRI; j--; )
3721 for (i = idlecnt [j]; i--; ) 5566 for (i = idlecnt [j]; i--; )
3722 cb (EV_A_ EV_IDLE, idles [j][i]); 5567 cb (EV_A_ EV_IDLE, idles [j][i]);
3723#endif 5568#endif
3724 5569
3725#if EV_FORK_ENABLE 5570#if EV_FORK_ENABLE
… …
3778 5623
3779#if EV_MULTIPLICITY 5624#if EV_MULTIPLICITY
3780 #include "ev_wrap.h" 5625 #include "ev_wrap.h"
3781#endif 5626#endif
3782 5627
3783#ifdef __cplusplus
3784}
3785#endif
3786

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