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Comparing libev/ev.c (file contents):
Revision 1.296 by root, Thu Jul 9 09:11:20 2009 UTC vs.
Revision 1.504 by root, Sun Jul 7 06:00:32 2019 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009 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 && HAVE_SYS_QUEUE_H 121# ifndef EV_USE_LINUXAIO
116# define EV_USE_KQUEUE 1 122# define EV_USE_LINUXAIO EV_FEATURE_BACKENDS
117# else
118# define EV_USE_KQUEUE 0
119# endif 123# endif
124# else
125# undef EV_USE_LINUXAIO
126# define EV_USE_LINUXAIO 0
120# endif 127# endif
121 128
122# ifndef EV_USE_PORT 129# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
123# if HAVE_PORT_H && HAVE_PORT_CREATE 130# ifndef EV_USE_KQUEUE
124# define EV_USE_PORT 1 131# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
125# else
126# define EV_USE_PORT 0
127# endif 132# endif
133# else
134# undef EV_USE_KQUEUE
135# define EV_USE_KQUEUE 0
128# endif 136# endif
129 137
138# if HAVE_PORT_H && HAVE_PORT_CREATE
130# ifndef EV_USE_INOTIFY 139# ifndef EV_USE_PORT
131# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 140# define EV_USE_PORT EV_FEATURE_BACKENDS
132# define EV_USE_INOTIFY 1
133# else
134# define EV_USE_INOTIFY 0
135# endif 141# endif
142# else
143# undef EV_USE_PORT
144# define EV_USE_PORT 0
136# endif 145# endif
137 146
147# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
138# ifndef EV_USE_EVENTFD 148# ifndef EV_USE_INOTIFY
139# if HAVE_EVENTFD 149# define EV_USE_INOTIFY EV_FEATURE_OS
140# define EV_USE_EVENTFD 1
141# else
142# define EV_USE_EVENTFD 0
143# endif 150# endif
151# else
152# undef EV_USE_INOTIFY
153# define EV_USE_INOTIFY 0
154# endif
155
156# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
157# ifndef EV_USE_SIGNALFD
158# define EV_USE_SIGNALFD EV_FEATURE_OS
159# endif
160# else
161# undef EV_USE_SIGNALFD
162# define EV_USE_SIGNALFD 0
163# endif
164
165# if HAVE_EVENTFD
166# ifndef EV_USE_EVENTFD
167# define EV_USE_EVENTFD EV_FEATURE_OS
168# endif
169# else
170# undef EV_USE_EVENTFD
171# define EV_USE_EVENTFD 0
144# endif 172# endif
145 173
146#endif 174#endif
147 175
148#include <math.h> 176/* OS X, in its infinite idiocy, actually HARDCODES
177 * a limit of 1024 into their select. Where people have brains,
178 * OS X engineers apparently have a vacuum. Or maybe they were
179 * ordered to have a vacuum, or they do anything for money.
180 * This might help. Or not.
181 * Note that this must be defined early, as other include files
182 * will rely on this define as well.
183 */
184#define _DARWIN_UNLIMITED_SELECT 1
185
149#include <stdlib.h> 186#include <stdlib.h>
187#include <string.h>
150#include <fcntl.h> 188#include <fcntl.h>
151#include <stddef.h> 189#include <stddef.h>
152 190
153#include <stdio.h> 191#include <stdio.h>
154 192
155#include <assert.h> 193#include <assert.h>
156#include <errno.h> 194#include <errno.h>
157#include <sys/types.h> 195#include <sys/types.h>
158#include <time.h> 196#include <time.h>
197#include <limits.h>
159 198
160#include <signal.h> 199#include <signal.h>
161 200
162#ifdef EV_H 201#ifdef EV_H
163# include EV_H 202# include EV_H
164#else 203#else
165# include "ev.h" 204# include "ev.h"
205#endif
206
207#if EV_NO_THREADS
208# undef EV_NO_SMP
209# define EV_NO_SMP 1
210# undef ECB_NO_THREADS
211# define ECB_NO_THREADS 1
212#endif
213#if EV_NO_SMP
214# undef EV_NO_SMP
215# define ECB_NO_SMP 1
166#endif 216#endif
167 217
168#ifndef _WIN32 218#ifndef _WIN32
169# include <sys/time.h> 219# include <sys/time.h>
170# include <sys/wait.h> 220# include <sys/wait.h>
171# include <unistd.h> 221# include <unistd.h>
172#else 222#else
173# include <io.h> 223# include <io.h>
174# define WIN32_LEAN_AND_MEAN 224# define WIN32_LEAN_AND_MEAN
225# include <winsock2.h>
175# include <windows.h> 226# include <windows.h>
176# ifndef EV_SELECT_IS_WINSOCKET 227# ifndef EV_SELECT_IS_WINSOCKET
177# define EV_SELECT_IS_WINSOCKET 1 228# define EV_SELECT_IS_WINSOCKET 1
178# endif 229# endif
230# undef EV_AVOID_STDIO
179#endif 231#endif
180 232
181/* this block tries to deduce configuration from header-defined symbols and defaults */ 233/* this block tries to deduce configuration from header-defined symbols and defaults */
182 234
235/* try to deduce the maximum number of signals on this platform */
236#if defined EV_NSIG
237/* use what's provided */
238#elif defined NSIG
239# define EV_NSIG (NSIG)
240#elif defined _NSIG
241# define EV_NSIG (_NSIG)
242#elif defined SIGMAX
243# define EV_NSIG (SIGMAX+1)
244#elif defined SIG_MAX
245# define EV_NSIG (SIG_MAX+1)
246#elif defined _SIG_MAX
247# define EV_NSIG (_SIG_MAX+1)
248#elif defined MAXSIG
249# define EV_NSIG (MAXSIG+1)
250#elif defined MAX_SIG
251# define EV_NSIG (MAX_SIG+1)
252#elif defined SIGARRAYSIZE
253# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
254#elif defined _sys_nsig
255# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
256#else
257# define EV_NSIG (8 * sizeof (sigset_t) + 1)
258#endif
259
260#ifndef EV_USE_FLOOR
261# define EV_USE_FLOOR 0
262#endif
263
183#ifndef EV_USE_CLOCK_SYSCALL 264#ifndef EV_USE_CLOCK_SYSCALL
184# if __linux && __GLIBC__ >= 2 265# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
185# define EV_USE_CLOCK_SYSCALL 1 266# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
186# else 267# else
187# define EV_USE_CLOCK_SYSCALL 0 268# define EV_USE_CLOCK_SYSCALL 0
188# endif 269# endif
189#endif 270#endif
190 271
272#if !(_POSIX_TIMERS > 0)
273# ifndef EV_USE_MONOTONIC
274# define EV_USE_MONOTONIC 0
275# endif
276# ifndef EV_USE_REALTIME
277# define EV_USE_REALTIME 0
278# endif
279#endif
280
191#ifndef EV_USE_MONOTONIC 281#ifndef EV_USE_MONOTONIC
192# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 282# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
193# define EV_USE_MONOTONIC 1 283# define EV_USE_MONOTONIC EV_FEATURE_OS
194# else 284# else
195# define EV_USE_MONOTONIC 0 285# define EV_USE_MONOTONIC 0
196# endif 286# endif
197#endif 287#endif
198 288
… …
200# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 290# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
201#endif 291#endif
202 292
203#ifndef EV_USE_NANOSLEEP 293#ifndef EV_USE_NANOSLEEP
204# if _POSIX_C_SOURCE >= 199309L 294# if _POSIX_C_SOURCE >= 199309L
205# define EV_USE_NANOSLEEP 1 295# define EV_USE_NANOSLEEP EV_FEATURE_OS
206# else 296# else
207# define EV_USE_NANOSLEEP 0 297# define EV_USE_NANOSLEEP 0
208# endif 298# endif
209#endif 299#endif
210 300
211#ifndef EV_USE_SELECT 301#ifndef EV_USE_SELECT
212# define EV_USE_SELECT 1 302# define EV_USE_SELECT EV_FEATURE_BACKENDS
213#endif 303#endif
214 304
215#ifndef EV_USE_POLL 305#ifndef EV_USE_POLL
216# ifdef _WIN32 306# ifdef _WIN32
217# define EV_USE_POLL 0 307# define EV_USE_POLL 0
218# else 308# else
219# define EV_USE_POLL 1 309# define EV_USE_POLL EV_FEATURE_BACKENDS
220# endif 310# endif
221#endif 311#endif
222 312
223#ifndef EV_USE_EPOLL 313#ifndef EV_USE_EPOLL
224# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 314# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
225# define EV_USE_EPOLL 1 315# define EV_USE_EPOLL EV_FEATURE_BACKENDS
226# else 316# else
227# define EV_USE_EPOLL 0 317# define EV_USE_EPOLL 0
228# endif 318# endif
229#endif 319#endif
230 320
… …
234 324
235#ifndef EV_USE_PORT 325#ifndef EV_USE_PORT
236# define EV_USE_PORT 0 326# define EV_USE_PORT 0
237#endif 327#endif
238 328
329#ifndef EV_USE_LINUXAIO
330# if __linux /* libev currently assumes linux/aio_abi.h is always available on linux */
331# define EV_USE_LINUXAIO 1
332# else
333# define EV_USE_LINUXAIO 0
334# endif
335#endif
336
337#ifndef EV_USE_IOURING
338# if __linux
339# define EV_USE_IOURING 0
340# else
341# define EV_USE_IOURING 0
342# endif
343#endif
344
239#ifndef EV_USE_INOTIFY 345#ifndef EV_USE_INOTIFY
240# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 346# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
241# define EV_USE_INOTIFY 1 347# define EV_USE_INOTIFY EV_FEATURE_OS
242# else 348# else
243# define EV_USE_INOTIFY 0 349# define EV_USE_INOTIFY 0
244# endif 350# endif
245#endif 351#endif
246 352
247#ifndef EV_PID_HASHSIZE 353#ifndef EV_PID_HASHSIZE
248# if EV_MINIMAL 354# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
249# define EV_PID_HASHSIZE 1
250# else
251# define EV_PID_HASHSIZE 16
252# endif
253#endif 355#endif
254 356
255#ifndef EV_INOTIFY_HASHSIZE 357#ifndef EV_INOTIFY_HASHSIZE
256# if EV_MINIMAL 358# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
257# define EV_INOTIFY_HASHSIZE 1
258# else
259# define EV_INOTIFY_HASHSIZE 16
260# endif
261#endif 359#endif
262 360
263#ifndef EV_USE_EVENTFD 361#ifndef EV_USE_EVENTFD
264# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 362# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
265# define EV_USE_EVENTFD 1 363# define EV_USE_EVENTFD EV_FEATURE_OS
266# else 364# else
267# define EV_USE_EVENTFD 0 365# define EV_USE_EVENTFD 0
366# endif
367#endif
368
369#ifndef EV_USE_SIGNALFD
370# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
371# define EV_USE_SIGNALFD EV_FEATURE_OS
372# else
373# define EV_USE_SIGNALFD 0
268# endif 374# endif
269#endif 375#endif
270 376
271#if 0 /* debugging */ 377#if 0 /* debugging */
272# define EV_VERIFY 3 378# define EV_VERIFY 3
273# define EV_USE_4HEAP 1 379# define EV_USE_4HEAP 1
274# define EV_HEAP_CACHE_AT 1 380# define EV_HEAP_CACHE_AT 1
275#endif 381#endif
276 382
277#ifndef EV_VERIFY 383#ifndef EV_VERIFY
278# define EV_VERIFY !EV_MINIMAL 384# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
279#endif 385#endif
280 386
281#ifndef EV_USE_4HEAP 387#ifndef EV_USE_4HEAP
282# define EV_USE_4HEAP !EV_MINIMAL 388# define EV_USE_4HEAP EV_FEATURE_DATA
283#endif 389#endif
284 390
285#ifndef EV_HEAP_CACHE_AT 391#ifndef EV_HEAP_CACHE_AT
286# define EV_HEAP_CACHE_AT !EV_MINIMAL 392# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
393#endif
394
395#ifdef __ANDROID__
396/* supposedly, android doesn't typedef fd_mask */
397# undef EV_USE_SELECT
398# define EV_USE_SELECT 0
399/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
400# undef EV_USE_CLOCK_SYSCALL
401# define EV_USE_CLOCK_SYSCALL 0
402#endif
403
404/* aix's poll.h seems to cause lots of trouble */
405#ifdef _AIX
406/* AIX has a completely broken poll.h header */
407# undef EV_USE_POLL
408# define EV_USE_POLL 0
287#endif 409#endif
288 410
289/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 411/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
290/* which makes programs even slower. might work on other unices, too. */ 412/* which makes programs even slower. might work on other unices, too. */
291#if EV_USE_CLOCK_SYSCALL 413#if EV_USE_CLOCK_SYSCALL
292# include <syscall.h> 414# include <sys/syscall.h>
293# ifdef SYS_clock_gettime 415# ifdef SYS_clock_gettime
294# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 416# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
295# undef EV_USE_MONOTONIC 417# undef EV_USE_MONOTONIC
296# define EV_USE_MONOTONIC 1 418# define EV_USE_MONOTONIC 1
419# define EV_NEED_SYSCALL 1
297# else 420# else
298# undef EV_USE_CLOCK_SYSCALL 421# undef EV_USE_CLOCK_SYSCALL
299# define EV_USE_CLOCK_SYSCALL 0 422# define EV_USE_CLOCK_SYSCALL 0
300# endif 423# endif
301#endif 424#endif
… …
316# undef EV_USE_INOTIFY 439# undef EV_USE_INOTIFY
317# define EV_USE_INOTIFY 0 440# define EV_USE_INOTIFY 0
318#endif 441#endif
319 442
320#if !EV_USE_NANOSLEEP 443#if !EV_USE_NANOSLEEP
321# ifndef _WIN32 444/* hp-ux has it in sys/time.h, which we unconditionally include above */
445# if !defined _WIN32 && !defined __hpux
322# include <sys/select.h> 446# include <sys/select.h>
323# endif 447# endif
324#endif 448#endif
325 449
450#if EV_USE_LINUXAIO
451# include <sys/syscall.h>
452# if SYS_io_getevents && EV_USE_EPOLL /* linuxaio backend requires epoll backend */
453# define EV_NEED_SYSCALL 1
454# else
455# undef EV_USE_LINUXAIO
456# define EV_USE_LINUXAIO 0
457# endif
458#endif
459
460#if EV_USE_IOURING
461# include <sys/syscall.h>
462# if !SYS_io_uring_setup && __linux && !__alpha
463# define SYS_io_uring_setup 425
464# define SYS_io_uring_enter 426
465# define SYS_io_uring_wregister 427
466# endif
467# if SYS_io_uring_setup && EV_USE_EPOLL /* iouring backend requires epoll backend */
468# define EV_NEED_SYSCALL 1
469# else
470# undef EV_USE_IOURING
471# define EV_USE_IOURING 0
472# endif
473#endif
474
326#if EV_USE_INOTIFY 475#if EV_USE_INOTIFY
327# include <sys/utsname.h>
328# include <sys/statfs.h> 476# include <sys/statfs.h>
329# include <sys/inotify.h> 477# include <sys/inotify.h>
330/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 478/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
331# ifndef IN_DONT_FOLLOW 479# ifndef IN_DONT_FOLLOW
332# undef EV_USE_INOTIFY 480# undef EV_USE_INOTIFY
333# define EV_USE_INOTIFY 0 481# define EV_USE_INOTIFY 0
334# endif 482# endif
335#endif 483#endif
336 484
337#if EV_SELECT_IS_WINSOCKET
338# include <winsock.h>
339#endif
340
341#if EV_USE_EVENTFD 485#if EV_USE_EVENTFD
342/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 486/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
343# include <stdint.h> 487# include <stdint.h>
344# ifdef __cplusplus 488# ifndef EFD_NONBLOCK
345extern "C" { 489# define EFD_NONBLOCK O_NONBLOCK
346# endif 490# endif
347int eventfd (unsigned int initval, int flags); 491# ifndef EFD_CLOEXEC
348# ifdef __cplusplus 492# ifdef O_CLOEXEC
349} 493# define EFD_CLOEXEC O_CLOEXEC
494# else
495# define EFD_CLOEXEC 02000000
496# endif
350# endif 497# endif
498EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
499#endif
500
501#if EV_USE_SIGNALFD
502/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
503# include <stdint.h>
504# ifndef SFD_NONBLOCK
505# define SFD_NONBLOCK O_NONBLOCK
351#endif 506# endif
507# ifndef SFD_CLOEXEC
508# ifdef O_CLOEXEC
509# define SFD_CLOEXEC O_CLOEXEC
510# else
511# define SFD_CLOEXEC 02000000
512# endif
513# endif
514EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
352 515
353/**/ 516struct signalfd_siginfo
517{
518 uint32_t ssi_signo;
519 char pad[128 - sizeof (uint32_t)];
520};
521#endif
522
523/*****************************************************************************/
354 524
355#if EV_VERIFY >= 3 525#if EV_VERIFY >= 3
356# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 526# define EV_FREQUENT_CHECK ev_verify (EV_A)
357#else 527#else
358# define EV_FREQUENT_CHECK do { } while (0) 528# define EV_FREQUENT_CHECK do { } while (0)
359#endif 529#endif
360 530
361/* 531/*
362 * This is used to avoid floating point rounding problems. 532 * This is used to work around floating point rounding problems.
363 * It is added to ev_rt_now when scheduling periodics
364 * to ensure progress, time-wise, even when rounding
365 * errors are against us.
366 * This value is good at least till the year 4000. 533 * This value is good at least till the year 4000.
367 * Better solutions welcome.
368 */ 534 */
369#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 535#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
536/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
370 537
371#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 538#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
372#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 539#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
373/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
374 540
541/* find a portable timestamp that is "alawys" in the future but fits into time_t.
542 * this is quite hard, and we are mostly guessing - we handle 32 bit signed/unsigned time_t,
543 * and sizes large than 32 bit, but and maybe the unlikely loating point time_t */
544#define EV_TSTAMP_HUGE \
545 (sizeof (time_t) >= 8 ? 10000000000000. \
546 : 0 < (time_t)4294967295 ? 4294967295. \
547 : 2147483647.) \
548
549#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
550#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
551
552/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
553/* ECB.H BEGIN */
554/*
555 * libecb - http://software.schmorp.de/pkg/libecb
556 *
557 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
558 * Copyright (©) 2011 Emanuele Giaquinta
559 * All rights reserved.
560 *
561 * Redistribution and use in source and binary forms, with or without modifica-
562 * tion, are permitted provided that the following conditions are met:
563 *
564 * 1. Redistributions of source code must retain the above copyright notice,
565 * this list of conditions and the following disclaimer.
566 *
567 * 2. Redistributions in binary form must reproduce the above copyright
568 * notice, this list of conditions and the following disclaimer in the
569 * documentation and/or other materials provided with the distribution.
570 *
571 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
572 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
573 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
574 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
575 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
576 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
577 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
578 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
579 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
580 * OF THE POSSIBILITY OF SUCH DAMAGE.
581 *
582 * Alternatively, the contents of this file may be used under the terms of
583 * the GNU General Public License ("GPL") version 2 or any later version,
584 * in which case the provisions of the GPL are applicable instead of
585 * the above. If you wish to allow the use of your version of this file
586 * only under the terms of the GPL and not to allow others to use your
587 * version of this file under the BSD license, indicate your decision
588 * by deleting the provisions above and replace them with the notice
589 * and other provisions required by the GPL. If you do not delete the
590 * provisions above, a recipient may use your version of this file under
591 * either the BSD or the GPL.
592 */
593
594#ifndef ECB_H
595#define ECB_H
596
597/* 16 bits major, 16 bits minor */
598#define ECB_VERSION 0x00010006
599
600#ifdef _WIN32
601 typedef signed char int8_t;
602 typedef unsigned char uint8_t;
603 typedef signed short int16_t;
604 typedef unsigned short uint16_t;
605 typedef signed int int32_t;
606 typedef unsigned int uint32_t;
375#if __GNUC__ >= 4 607 #if __GNUC__
376# define expect(expr,value) __builtin_expect ((expr),(value)) 608 typedef signed long long int64_t;
377# define noinline __attribute__ ((noinline)) 609 typedef unsigned long long uint64_t;
610 #else /* _MSC_VER || __BORLANDC__ */
611 typedef signed __int64 int64_t;
612 typedef unsigned __int64 uint64_t;
613 #endif
614 #ifdef _WIN64
615 #define ECB_PTRSIZE 8
616 typedef uint64_t uintptr_t;
617 typedef int64_t intptr_t;
618 #else
619 #define ECB_PTRSIZE 4
620 typedef uint32_t uintptr_t;
621 typedef int32_t intptr_t;
622 #endif
378#else 623#else
379# define expect(expr,value) (expr) 624 #include <inttypes.h>
380# define noinline 625 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
381# if __STDC_VERSION__ < 199901L && __GNUC__ < 2 626 #define ECB_PTRSIZE 8
382# define inline 627 #else
628 #define ECB_PTRSIZE 4
629 #endif
383# endif 630#endif
631
632#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
633#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
634
635/* work around x32 idiocy by defining proper macros */
636#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
637 #if _ILP32
638 #define ECB_AMD64_X32 1
639 #else
640 #define ECB_AMD64 1
384#endif 641 #endif
642#endif
385 643
386#define expect_false(expr) expect ((expr) != 0, 0) 644/* many compilers define _GNUC_ to some versions but then only implement
387#define expect_true(expr) expect ((expr) != 0, 1) 645 * what their idiot authors think are the "more important" extensions,
388#define inline_size static inline 646 * causing enormous grief in return for some better fake benchmark numbers.
389 647 * or so.
390#if EV_MINIMAL 648 * we try to detect these and simply assume they are not gcc - if they have
391# define inline_speed static noinline 649 * an issue with that they should have done it right in the first place.
650 */
651#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
652 #define ECB_GCC_VERSION(major,minor) 0
392#else 653#else
654 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
655#endif
656
657#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
658
659#if __clang__ && defined __has_builtin
660 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
661#else
662 #define ECB_CLANG_BUILTIN(x) 0
663#endif
664
665#if __clang__ && defined __has_extension
666 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
667#else
668 #define ECB_CLANG_EXTENSION(x) 0
669#endif
670
671#define ECB_CPP (__cplusplus+0)
672#define ECB_CPP11 (__cplusplus >= 201103L)
673#define ECB_CPP14 (__cplusplus >= 201402L)
674#define ECB_CPP17 (__cplusplus >= 201703L)
675
676#if ECB_CPP
677 #define ECB_C 0
678 #define ECB_STDC_VERSION 0
679#else
680 #define ECB_C 1
681 #define ECB_STDC_VERSION __STDC_VERSION__
682#endif
683
684#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
685#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
686#define ECB_C17 (ECB_STDC_VERSION >= 201710L)
687
688#if ECB_CPP
689 #define ECB_EXTERN_C extern "C"
690 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
691 #define ECB_EXTERN_C_END }
692#else
693 #define ECB_EXTERN_C extern
694 #define ECB_EXTERN_C_BEG
695 #define ECB_EXTERN_C_END
696#endif
697
698/*****************************************************************************/
699
700/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
701/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
702
703#if ECB_NO_THREADS
704 #define ECB_NO_SMP 1
705#endif
706
707#if ECB_NO_SMP
708 #define ECB_MEMORY_FENCE do { } while (0)
709#endif
710
711/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
712#if __xlC__ && ECB_CPP
713 #include <builtins.h>
714#endif
715
716#if 1400 <= _MSC_VER
717 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
718#endif
719
720#ifndef ECB_MEMORY_FENCE
721 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
722 #define ECB_MEMORY_FENCE_RELAXED __asm__ __volatile__ ("" : : : "memory")
723 #if __i386 || __i386__
724 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
725 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
726 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
727 #elif ECB_GCC_AMD64
728 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
729 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
730 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
731 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
732 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
733 #elif defined __ARM_ARCH_2__ \
734 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
735 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
736 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
737 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
738 || defined __ARM_ARCH_5TEJ__
739 /* should not need any, unless running old code on newer cpu - arm doesn't support that */
740 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
741 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
742 || defined __ARM_ARCH_6T2__
743 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
744 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
745 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
746 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
747 #elif __aarch64__
748 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
749 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
750 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
751 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
752 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
753 #elif defined __s390__ || defined __s390x__
754 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
755 #elif defined __mips__
756 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
757 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
758 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
759 #elif defined __alpha__
760 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
761 #elif defined __hppa__
762 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
763 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
764 #elif defined __ia64__
765 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
766 #elif defined __m68k__
767 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
768 #elif defined __m88k__
769 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
770 #elif defined __sh__
771 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
772 #endif
773 #endif
774#endif
775
776#ifndef ECB_MEMORY_FENCE
777 #if ECB_GCC_VERSION(4,7)
778 /* see comment below (stdatomic.h) about the C11 memory model. */
779 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
780 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
781 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
782 #define ECB_MEMORY_FENCE_RELAXED __atomic_thread_fence (__ATOMIC_RELAXED)
783
784 #elif ECB_CLANG_EXTENSION(c_atomic)
785 /* see comment below (stdatomic.h) about the C11 memory model. */
786 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
787 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
788 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
789 #define ECB_MEMORY_FENCE_RELAXED __c11_atomic_thread_fence (__ATOMIC_RELAXED)
790
791 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
792 #define ECB_MEMORY_FENCE __sync_synchronize ()
793 #elif _MSC_VER >= 1500 /* VC++ 2008 */
794 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
795 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
796 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
797 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
798 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
799 #elif _MSC_VER >= 1400 /* VC++ 2005 */
800 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
801 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
802 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
803 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
804 #elif defined _WIN32
805 #include <WinNT.h>
806 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
807 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
808 #include <mbarrier.h>
809 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
810 #define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier ()
811 #define ECB_MEMORY_FENCE_RELEASE __machine_rel_barrier ()
812 #define ECB_MEMORY_FENCE_RELAXED __compiler_barrier ()
813 #elif __xlC__
814 #define ECB_MEMORY_FENCE __sync ()
815 #endif
816#endif
817
818#ifndef ECB_MEMORY_FENCE
819 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
820 /* we assume that these memory fences work on all variables/all memory accesses, */
821 /* not just C11 atomics and atomic accesses */
822 #include <stdatomic.h>
823 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
824 #define ECB_MEMORY_FENCE_ACQUIRE atomic_thread_fence (memory_order_acquire)
825 #define ECB_MEMORY_FENCE_RELEASE atomic_thread_fence (memory_order_release)
826 #endif
827#endif
828
829#ifndef ECB_MEMORY_FENCE
830 #if !ECB_AVOID_PTHREADS
831 /*
832 * if you get undefined symbol references to pthread_mutex_lock,
833 * or failure to find pthread.h, then you should implement
834 * the ECB_MEMORY_FENCE operations for your cpu/compiler
835 * OR provide pthread.h and link against the posix thread library
836 * of your system.
837 */
838 #include <pthread.h>
839 #define ECB_NEEDS_PTHREADS 1
840 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
841
842 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
843 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
844 #endif
845#endif
846
847#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
848 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
849#endif
850
851#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
852 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
853#endif
854
855#if !defined ECB_MEMORY_FENCE_RELAXED && defined ECB_MEMORY_FENCE
856 #define ECB_MEMORY_FENCE_RELAXED ECB_MEMORY_FENCE /* very heavy-handed */
857#endif
858
859/*****************************************************************************/
860
861#if ECB_CPP
862 #define ecb_inline static inline
863#elif ECB_GCC_VERSION(2,5)
864 #define ecb_inline static __inline__
865#elif ECB_C99
866 #define ecb_inline static inline
867#else
868 #define ecb_inline static
869#endif
870
871#if ECB_GCC_VERSION(3,3)
872 #define ecb_restrict __restrict__
873#elif ECB_C99
874 #define ecb_restrict restrict
875#else
876 #define ecb_restrict
877#endif
878
879typedef int ecb_bool;
880
881#define ECB_CONCAT_(a, b) a ## b
882#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
883#define ECB_STRINGIFY_(a) # a
884#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
885#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
886
887#define ecb_function_ ecb_inline
888
889#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
890 #define ecb_attribute(attrlist) __attribute__ (attrlist)
891#else
892 #define ecb_attribute(attrlist)
893#endif
894
895#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
896 #define ecb_is_constant(expr) __builtin_constant_p (expr)
897#else
898 /* possible C11 impl for integral types
899 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
900 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
901
902 #define ecb_is_constant(expr) 0
903#endif
904
905#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
906 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
907#else
908 #define ecb_expect(expr,value) (expr)
909#endif
910
911#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
912 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
913#else
914 #define ecb_prefetch(addr,rw,locality)
915#endif
916
917/* no emulation for ecb_decltype */
918#if ECB_CPP11
919 // older implementations might have problems with decltype(x)::type, work around it
920 template<class T> struct ecb_decltype_t { typedef T type; };
921 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
922#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
923 #define ecb_decltype(x) __typeof__ (x)
924#endif
925
926#if _MSC_VER >= 1300
927 #define ecb_deprecated __declspec (deprecated)
928#else
929 #define ecb_deprecated ecb_attribute ((__deprecated__))
930#endif
931
932#if _MSC_VER >= 1500
933 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
934#elif ECB_GCC_VERSION(4,5)
935 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
936#else
937 #define ecb_deprecated_message(msg) ecb_deprecated
938#endif
939
940#if _MSC_VER >= 1400
941 #define ecb_noinline __declspec (noinline)
942#else
943 #define ecb_noinline ecb_attribute ((__noinline__))
944#endif
945
946#define ecb_unused ecb_attribute ((__unused__))
947#define ecb_const ecb_attribute ((__const__))
948#define ecb_pure ecb_attribute ((__pure__))
949
950#if ECB_C11 || __IBMC_NORETURN
951 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
952 #define ecb_noreturn _Noreturn
953#elif ECB_CPP11
954 #define ecb_noreturn [[noreturn]]
955#elif _MSC_VER >= 1200
956 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
957 #define ecb_noreturn __declspec (noreturn)
958#else
959 #define ecb_noreturn ecb_attribute ((__noreturn__))
960#endif
961
962#if ECB_GCC_VERSION(4,3)
963 #define ecb_artificial ecb_attribute ((__artificial__))
964 #define ecb_hot ecb_attribute ((__hot__))
965 #define ecb_cold ecb_attribute ((__cold__))
966#else
967 #define ecb_artificial
968 #define ecb_hot
969 #define ecb_cold
970#endif
971
972/* put around conditional expressions if you are very sure that the */
973/* expression is mostly true or mostly false. note that these return */
974/* booleans, not the expression. */
975#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
976#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
977/* for compatibility to the rest of the world */
978#define ecb_likely(expr) ecb_expect_true (expr)
979#define ecb_unlikely(expr) ecb_expect_false (expr)
980
981/* count trailing zero bits and count # of one bits */
982#if ECB_GCC_VERSION(3,4) \
983 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
984 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
985 && ECB_CLANG_BUILTIN(__builtin_popcount))
986 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
987 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
988 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
989 #define ecb_ctz32(x) __builtin_ctz (x)
990 #define ecb_ctz64(x) __builtin_ctzll (x)
991 #define ecb_popcount32(x) __builtin_popcount (x)
992 /* no popcountll */
993#else
994 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
995 ecb_function_ ecb_const int
996 ecb_ctz32 (uint32_t x)
997 {
998#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
999 unsigned long r;
1000 _BitScanForward (&r, x);
1001 return (int)r;
1002#else
1003 int r = 0;
1004
1005 x &= ~x + 1; /* this isolates the lowest bit */
1006
1007#if ECB_branchless_on_i386
1008 r += !!(x & 0xaaaaaaaa) << 0;
1009 r += !!(x & 0xcccccccc) << 1;
1010 r += !!(x & 0xf0f0f0f0) << 2;
1011 r += !!(x & 0xff00ff00) << 3;
1012 r += !!(x & 0xffff0000) << 4;
1013#else
1014 if (x & 0xaaaaaaaa) r += 1;
1015 if (x & 0xcccccccc) r += 2;
1016 if (x & 0xf0f0f0f0) r += 4;
1017 if (x & 0xff00ff00) r += 8;
1018 if (x & 0xffff0000) r += 16;
1019#endif
1020
1021 return r;
1022#endif
1023 }
1024
1025 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
1026 ecb_function_ ecb_const int
1027 ecb_ctz64 (uint64_t x)
1028 {
1029#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1030 unsigned long r;
1031 _BitScanForward64 (&r, x);
1032 return (int)r;
1033#else
1034 int shift = x & 0xffffffff ? 0 : 32;
1035 return ecb_ctz32 (x >> shift) + shift;
1036#endif
1037 }
1038
1039 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
1040 ecb_function_ ecb_const int
1041 ecb_popcount32 (uint32_t x)
1042 {
1043 x -= (x >> 1) & 0x55555555;
1044 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
1045 x = ((x >> 4) + x) & 0x0f0f0f0f;
1046 x *= 0x01010101;
1047
1048 return x >> 24;
1049 }
1050
1051 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
1052 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
1053 {
1054#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1055 unsigned long r;
1056 _BitScanReverse (&r, x);
1057 return (int)r;
1058#else
1059 int r = 0;
1060
1061 if (x >> 16) { x >>= 16; r += 16; }
1062 if (x >> 8) { x >>= 8; r += 8; }
1063 if (x >> 4) { x >>= 4; r += 4; }
1064 if (x >> 2) { x >>= 2; r += 2; }
1065 if (x >> 1) { r += 1; }
1066
1067 return r;
1068#endif
1069 }
1070
1071 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
1072 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
1073 {
1074#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1075 unsigned long r;
1076 _BitScanReverse64 (&r, x);
1077 return (int)r;
1078#else
1079 int r = 0;
1080
1081 if (x >> 32) { x >>= 32; r += 32; }
1082
1083 return r + ecb_ld32 (x);
1084#endif
1085 }
1086#endif
1087
1088ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
1089ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
1090ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
1091ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
1092
1093ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
1094ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
1095{
1096 return ( (x * 0x0802U & 0x22110U)
1097 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
1098}
1099
1100ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
1101ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
1102{
1103 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
1104 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
1105 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
1106 x = ( x >> 8 ) | ( x << 8);
1107
1108 return x;
1109}
1110
1111ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
1112ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
1113{
1114 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
1115 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
1116 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
1117 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
1118 x = ( x >> 16 ) | ( x << 16);
1119
1120 return x;
1121}
1122
1123/* popcount64 is only available on 64 bit cpus as gcc builtin */
1124/* so for this version we are lazy */
1125ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
1126ecb_function_ ecb_const int
1127ecb_popcount64 (uint64_t x)
1128{
1129 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
1130}
1131
1132ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
1133ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
1134ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
1135ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
1136ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
1137ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
1138ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
1139ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
1140
1141ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
1142ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
1143ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
1144ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
1145ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
1146ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
1147ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
1148ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
1149
1150#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1151 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1152 #define ecb_bswap16(x) __builtin_bswap16 (x)
1153 #else
1154 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1155 #endif
1156 #define ecb_bswap32(x) __builtin_bswap32 (x)
1157 #define ecb_bswap64(x) __builtin_bswap64 (x)
1158#elif _MSC_VER
1159 #include <stdlib.h>
1160 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1161 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1162 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
1163#else
1164 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
1165 ecb_function_ ecb_const uint16_t
1166 ecb_bswap16 (uint16_t x)
1167 {
1168 return ecb_rotl16 (x, 8);
1169 }
1170
1171 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
1172 ecb_function_ ecb_const uint32_t
1173 ecb_bswap32 (uint32_t x)
1174 {
1175 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
1176 }
1177
1178 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
1179 ecb_function_ ecb_const uint64_t
1180 ecb_bswap64 (uint64_t x)
1181 {
1182 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
1183 }
1184#endif
1185
1186#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
1187 #define ecb_unreachable() __builtin_unreachable ()
1188#else
1189 /* this seems to work fine, but gcc always emits a warning for it :/ */
1190 ecb_inline ecb_noreturn void ecb_unreachable (void);
1191 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
1192#endif
1193
1194/* try to tell the compiler that some condition is definitely true */
1195#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
1196
1197ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
1198ecb_inline ecb_const uint32_t
1199ecb_byteorder_helper (void)
1200{
1201 /* the union code still generates code under pressure in gcc, */
1202 /* but less than using pointers, and always seems to */
1203 /* successfully return a constant. */
1204 /* the reason why we have this horrible preprocessor mess */
1205 /* is to avoid it in all cases, at least on common architectures */
1206 /* or when using a recent enough gcc version (>= 4.6) */
1207#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1208 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1209 #define ECB_LITTLE_ENDIAN 1
1210 return 0x44332211;
1211#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1212 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1213 #define ECB_BIG_ENDIAN 1
1214 return 0x11223344;
1215#else
1216 union
1217 {
1218 uint8_t c[4];
1219 uint32_t u;
1220 } u = { 0x11, 0x22, 0x33, 0x44 };
1221 return u.u;
1222#endif
1223}
1224
1225ecb_inline ecb_const ecb_bool ecb_big_endian (void);
1226ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
1227ecb_inline ecb_const ecb_bool ecb_little_endian (void);
1228ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
1229
1230#if ECB_GCC_VERSION(3,0) || ECB_C99
1231 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1232#else
1233 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1234#endif
1235
1236#if ECB_CPP
1237 template<typename T>
1238 static inline T ecb_div_rd (T val, T div)
1239 {
1240 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1241 }
1242 template<typename T>
1243 static inline T ecb_div_ru (T val, T div)
1244 {
1245 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1246 }
1247#else
1248 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1249 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1250#endif
1251
1252#if ecb_cplusplus_does_not_suck
1253 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1254 template<typename T, int N>
1255 static inline int ecb_array_length (const T (&arr)[N])
1256 {
1257 return N;
1258 }
1259#else
1260 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1261#endif
1262
1263ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1264ecb_function_ ecb_const uint32_t
1265ecb_binary16_to_binary32 (uint32_t x)
1266{
1267 unsigned int s = (x & 0x8000) << (31 - 15);
1268 int e = (x >> 10) & 0x001f;
1269 unsigned int m = x & 0x03ff;
1270
1271 if (ecb_expect_false (e == 31))
1272 /* infinity or NaN */
1273 e = 255 - (127 - 15);
1274 else if (ecb_expect_false (!e))
1275 {
1276 if (ecb_expect_true (!m))
1277 /* zero, handled by code below by forcing e to 0 */
1278 e = 0 - (127 - 15);
1279 else
1280 {
1281 /* subnormal, renormalise */
1282 unsigned int s = 10 - ecb_ld32 (m);
1283
1284 m = (m << s) & 0x3ff; /* mask implicit bit */
1285 e -= s - 1;
1286 }
1287 }
1288
1289 /* e and m now are normalised, or zero, (or inf or nan) */
1290 e += 127 - 15;
1291
1292 return s | (e << 23) | (m << (23 - 10));
1293}
1294
1295ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1296ecb_function_ ecb_const uint16_t
1297ecb_binary32_to_binary16 (uint32_t x)
1298{
1299 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1300 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1301 unsigned int m = x & 0x007fffff;
1302
1303 x &= 0x7fffffff;
1304
1305 /* if it's within range of binary16 normals, use fast path */
1306 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1307 {
1308 /* mantissa round-to-even */
1309 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1310
1311 /* handle overflow */
1312 if (ecb_expect_false (m >= 0x00800000))
1313 {
1314 m >>= 1;
1315 e += 1;
1316 }
1317
1318 return s | (e << 10) | (m >> (23 - 10));
1319 }
1320
1321 /* handle large numbers and infinity */
1322 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1323 return s | 0x7c00;
1324
1325 /* handle zero, subnormals and small numbers */
1326 if (ecb_expect_true (x < 0x38800000))
1327 {
1328 /* zero */
1329 if (ecb_expect_true (!x))
1330 return s;
1331
1332 /* handle subnormals */
1333
1334 /* too small, will be zero */
1335 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1336 return s;
1337
1338 m |= 0x00800000; /* make implicit bit explicit */
1339
1340 /* very tricky - we need to round to the nearest e (+10) bit value */
1341 {
1342 unsigned int bits = 14 - e;
1343 unsigned int half = (1 << (bits - 1)) - 1;
1344 unsigned int even = (m >> bits) & 1;
1345
1346 /* if this overflows, we will end up with a normalised number */
1347 m = (m + half + even) >> bits;
1348 }
1349
1350 return s | m;
1351 }
1352
1353 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1354 m >>= 13;
1355
1356 return s | 0x7c00 | m | !m;
1357}
1358
1359/*******************************************************************************/
1360/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1361
1362/* basically, everything uses "ieee pure-endian" floating point numbers */
1363/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1364#if 0 \
1365 || __i386 || __i386__ \
1366 || ECB_GCC_AMD64 \
1367 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1368 || defined __s390__ || defined __s390x__ \
1369 || defined __mips__ \
1370 || defined __alpha__ \
1371 || defined __hppa__ \
1372 || defined __ia64__ \
1373 || defined __m68k__ \
1374 || defined __m88k__ \
1375 || defined __sh__ \
1376 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1377 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1378 || defined __aarch64__
1379 #define ECB_STDFP 1
1380 #include <string.h> /* for memcpy */
1381#else
1382 #define ECB_STDFP 0
1383#endif
1384
1385#ifndef ECB_NO_LIBM
1386
1387 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1388
1389 /* only the oldest of old doesn't have this one. solaris. */
1390 #ifdef INFINITY
1391 #define ECB_INFINITY INFINITY
1392 #else
1393 #define ECB_INFINITY HUGE_VAL
1394 #endif
1395
1396 #ifdef NAN
1397 #define ECB_NAN NAN
1398 #else
1399 #define ECB_NAN ECB_INFINITY
1400 #endif
1401
1402 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1403 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1404 #define ecb_frexpf(x,e) frexpf ((x), (e))
1405 #else
1406 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1407 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1408 #endif
1409
1410 /* convert a float to ieee single/binary32 */
1411 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1412 ecb_function_ ecb_const uint32_t
1413 ecb_float_to_binary32 (float x)
1414 {
1415 uint32_t r;
1416
1417 #if ECB_STDFP
1418 memcpy (&r, &x, 4);
1419 #else
1420 /* slow emulation, works for anything but -0 */
1421 uint32_t m;
1422 int e;
1423
1424 if (x == 0e0f ) return 0x00000000U;
1425 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1426 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1427 if (x != x ) return 0x7fbfffffU;
1428
1429 m = ecb_frexpf (x, &e) * 0x1000000U;
1430
1431 r = m & 0x80000000U;
1432
1433 if (r)
1434 m = -m;
1435
1436 if (e <= -126)
1437 {
1438 m &= 0xffffffU;
1439 m >>= (-125 - e);
1440 e = -126;
1441 }
1442
1443 r |= (e + 126) << 23;
1444 r |= m & 0x7fffffU;
1445 #endif
1446
1447 return r;
1448 }
1449
1450 /* converts an ieee single/binary32 to a float */
1451 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1452 ecb_function_ ecb_const float
1453 ecb_binary32_to_float (uint32_t x)
1454 {
1455 float r;
1456
1457 #if ECB_STDFP
1458 memcpy (&r, &x, 4);
1459 #else
1460 /* emulation, only works for normals and subnormals and +0 */
1461 int neg = x >> 31;
1462 int e = (x >> 23) & 0xffU;
1463
1464 x &= 0x7fffffU;
1465
1466 if (e)
1467 x |= 0x800000U;
1468 else
1469 e = 1;
1470
1471 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1472 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1473
1474 r = neg ? -r : r;
1475 #endif
1476
1477 return r;
1478 }
1479
1480 /* convert a double to ieee double/binary64 */
1481 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1482 ecb_function_ ecb_const uint64_t
1483 ecb_double_to_binary64 (double x)
1484 {
1485 uint64_t r;
1486
1487 #if ECB_STDFP
1488 memcpy (&r, &x, 8);
1489 #else
1490 /* slow emulation, works for anything but -0 */
1491 uint64_t m;
1492 int e;
1493
1494 if (x == 0e0 ) return 0x0000000000000000U;
1495 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1496 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1497 if (x != x ) return 0X7ff7ffffffffffffU;
1498
1499 m = frexp (x, &e) * 0x20000000000000U;
1500
1501 r = m & 0x8000000000000000;;
1502
1503 if (r)
1504 m = -m;
1505
1506 if (e <= -1022)
1507 {
1508 m &= 0x1fffffffffffffU;
1509 m >>= (-1021 - e);
1510 e = -1022;
1511 }
1512
1513 r |= ((uint64_t)(e + 1022)) << 52;
1514 r |= m & 0xfffffffffffffU;
1515 #endif
1516
1517 return r;
1518 }
1519
1520 /* converts an ieee double/binary64 to a double */
1521 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1522 ecb_function_ ecb_const double
1523 ecb_binary64_to_double (uint64_t x)
1524 {
1525 double r;
1526
1527 #if ECB_STDFP
1528 memcpy (&r, &x, 8);
1529 #else
1530 /* emulation, only works for normals and subnormals and +0 */
1531 int neg = x >> 63;
1532 int e = (x >> 52) & 0x7ffU;
1533
1534 x &= 0xfffffffffffffU;
1535
1536 if (e)
1537 x |= 0x10000000000000U;
1538 else
1539 e = 1;
1540
1541 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1542 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1543
1544 r = neg ? -r : r;
1545 #endif
1546
1547 return r;
1548 }
1549
1550 /* convert a float to ieee half/binary16 */
1551 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1552 ecb_function_ ecb_const uint16_t
1553 ecb_float_to_binary16 (float x)
1554 {
1555 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1556 }
1557
1558 /* convert an ieee half/binary16 to float */
1559 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1560 ecb_function_ ecb_const float
1561 ecb_binary16_to_float (uint16_t x)
1562 {
1563 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1564 }
1565
1566#endif
1567
1568#endif
1569
1570/* ECB.H END */
1571
1572#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1573/* if your architecture doesn't need memory fences, e.g. because it is
1574 * single-cpu/core, or if you use libev in a project that doesn't use libev
1575 * from multiple threads, then you can define ECB_NO_THREADS when compiling
1576 * libev, in which cases the memory fences become nops.
1577 * alternatively, you can remove this #error and link against libpthread,
1578 * which will then provide the memory fences.
1579 */
1580# error "memory fences not defined for your architecture, please report"
1581#endif
1582
1583#ifndef ECB_MEMORY_FENCE
1584# define ECB_MEMORY_FENCE do { } while (0)
1585# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1586# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1587#endif
1588
1589#define inline_size ecb_inline
1590
1591#if EV_FEATURE_CODE
393# define inline_speed static inline 1592# define inline_speed ecb_inline
1593#else
1594# define inline_speed ecb_noinline static
394#endif 1595#endif
1596
1597/*****************************************************************************/
1598/* raw syscall wrappers */
1599
1600#if EV_NEED_SYSCALL
1601
1602#include <sys/syscall.h>
1603
1604/*
1605 * define some syscall wrappers for common architectures
1606 * this is mostly for nice looks during debugging, not performance.
1607 * our syscalls return < 0, not == -1, on error. which is good
1608 * enough for linux aio.
1609 * TODO: arm is also common nowadays, maybe even mips and x86
1610 * TODO: after implementing this, it suddenly looks like overkill, but its hard to remove...
1611 */
1612#if __GNUC__ && __linux && ECB_AMD64 && !defined __OPTIMIZE_SIZE__
1613 /* the costly errno access probably kills this for size optimisation */
1614
1615 #define ev_syscall(nr,narg,arg1,arg2,arg3,arg4,arg5,arg6) \
1616 ({ \
1617 long res; \
1618 register unsigned long r6 __asm__ ("r9" ); \
1619 register unsigned long r5 __asm__ ("r8" ); \
1620 register unsigned long r4 __asm__ ("r10"); \
1621 register unsigned long r3 __asm__ ("rdx"); \
1622 register unsigned long r2 __asm__ ("rsi"); \
1623 register unsigned long r1 __asm__ ("rdi"); \
1624 if (narg >= 6) r6 = (unsigned long)(arg6); \
1625 if (narg >= 5) r5 = (unsigned long)(arg5); \
1626 if (narg >= 4) r4 = (unsigned long)(arg4); \
1627 if (narg >= 3) r3 = (unsigned long)(arg3); \
1628 if (narg >= 2) r2 = (unsigned long)(arg2); \
1629 if (narg >= 1) r1 = (unsigned long)(arg1); \
1630 __asm__ __volatile__ ( \
1631 "syscall\n\t" \
1632 : "=a" (res) \
1633 : "0" (nr), "r" (r1), "r" (r2), "r" (r3), "r" (r4), "r" (r5) \
1634 : "cc", "r11", "cx", "memory"); \
1635 errno = -res; \
1636 res; \
1637 })
1638
1639#endif
1640
1641#ifdef ev_syscall
1642 #define ev_syscall0(nr) ev_syscall (nr, 0, 0, 0, 0, 0, 0, 0)
1643 #define ev_syscall1(nr,arg1) ev_syscall (nr, 1, arg1, 0, 0, 0, 0, 0)
1644 #define ev_syscall2(nr,arg1,arg2) ev_syscall (nr, 2, arg1, arg2, 0, 0, 0, 0)
1645 #define ev_syscall3(nr,arg1,arg2,arg3) ev_syscall (nr, 3, arg1, arg2, arg3, 0, 0, 0)
1646 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) ev_syscall (nr, 3, arg1, arg2, arg3, arg4, 0, 0)
1647 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) ev_syscall (nr, 5, arg1, arg2, arg3, arg4, arg5, 0)
1648 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) ev_syscall (nr, 6, arg1, arg2, arg3, arg4, arg5,arg6)
1649#else
1650 #define ev_syscall0(nr) syscall (nr)
1651 #define ev_syscall1(nr,arg1) syscall (nr, arg1)
1652 #define ev_syscall2(nr,arg1,arg2) syscall (nr, arg1, arg2)
1653 #define ev_syscall3(nr,arg1,arg2,arg3) syscall (nr, arg1, arg2, arg3)
1654 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) syscall (nr, arg1, arg2, arg3, arg4)
1655 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) syscall (nr, arg1, arg2, arg3, arg4, arg5)
1656 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) syscall (nr, arg1, arg2, arg3, arg4, arg5,arg6)
1657#endif
1658
1659#endif
1660
1661/*****************************************************************************/
395 1662
396#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1663#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
397 1664
398#if EV_MINPRI == EV_MAXPRI 1665#if EV_MINPRI == EV_MAXPRI
399# define ABSPRI(w) (((W)w), 0) 1666# define ABSPRI(w) (((W)w), 0)
400#else 1667#else
401# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1668# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
402#endif 1669#endif
403 1670
404#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1671#define EMPTY /* required for microsofts broken pseudo-c compiler */
405#define EMPTY2(a,b) /* used to suppress some warnings */
406 1672
407typedef ev_watcher *W; 1673typedef ev_watcher *W;
408typedef ev_watcher_list *WL; 1674typedef ev_watcher_list *WL;
409typedef ev_watcher_time *WT; 1675typedef ev_watcher_time *WT;
410 1676
411#define ev_active(w) ((W)(w))->active 1677#define ev_active(w) ((W)(w))->active
412#define ev_at(w) ((WT)(w))->at 1678#define ev_at(w) ((WT)(w))->at
413 1679
414#if EV_USE_REALTIME 1680#if EV_USE_REALTIME
415/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 1681/* sig_atomic_t is used to avoid per-thread variables or locking but still */
416/* giving it a reasonably high chance of working on typical architetcures */ 1682/* giving it a reasonably high chance of working on typical architectures */
417static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 1683static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
418#endif 1684#endif
419 1685
420#if EV_USE_MONOTONIC 1686#if EV_USE_MONOTONIC
421static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 1687static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
422#endif 1688#endif
423 1689
1690#ifndef EV_FD_TO_WIN32_HANDLE
1691# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
1692#endif
1693#ifndef EV_WIN32_HANDLE_TO_FD
1694# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
1695#endif
1696#ifndef EV_WIN32_CLOSE_FD
1697# define EV_WIN32_CLOSE_FD(fd) close (fd)
1698#endif
1699
424#ifdef _WIN32 1700#ifdef _WIN32
425# include "ev_win32.c" 1701# include "ev_win32.c"
426#endif 1702#endif
427 1703
428/*****************************************************************************/ 1704/*****************************************************************************/
429 1705
1706#if EV_USE_LINUXAIO
1707# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
1708#endif
1709
1710/* define a suitable floor function (only used by periodics atm) */
1711
1712#if EV_USE_FLOOR
1713# include <math.h>
1714# define ev_floor(v) floor (v)
1715#else
1716
1717#include <float.h>
1718
1719/* a floor() replacement function, should be independent of ev_tstamp type */
1720ecb_noinline
1721static ev_tstamp
1722ev_floor (ev_tstamp v)
1723{
1724 /* the choice of shift factor is not terribly important */
1725#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1726 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1727#else
1728 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1729#endif
1730
1731 /* special treatment for negative arguments */
1732 if (ecb_expect_false (v < 0.))
1733 {
1734 ev_tstamp f = -ev_floor (-v);
1735
1736 return f - (f == v ? 0 : 1);
1737 }
1738
1739 /* argument too large for an unsigned long? then reduce it */
1740 if (ecb_expect_false (v >= shift))
1741 {
1742 ev_tstamp f;
1743
1744 if (v == v - 1.)
1745 return v; /* very large numbers are assumed to be integer */
1746
1747 f = shift * ev_floor (v * (1. / shift));
1748 return f + ev_floor (v - f);
1749 }
1750
1751 /* fits into an unsigned long */
1752 return (unsigned long)v;
1753}
1754
1755#endif
1756
1757/*****************************************************************************/
1758
1759#ifdef __linux
1760# include <sys/utsname.h>
1761#endif
1762
1763ecb_noinline ecb_cold
1764static unsigned int
1765ev_linux_version (void)
1766{
1767#ifdef __linux
1768 unsigned int v = 0;
1769 struct utsname buf;
1770 int i;
1771 char *p = buf.release;
1772
1773 if (uname (&buf))
1774 return 0;
1775
1776 for (i = 3+1; --i; )
1777 {
1778 unsigned int c = 0;
1779
1780 for (;;)
1781 {
1782 if (*p >= '0' && *p <= '9')
1783 c = c * 10 + *p++ - '0';
1784 else
1785 {
1786 p += *p == '.';
1787 break;
1788 }
1789 }
1790
1791 v = (v << 8) | c;
1792 }
1793
1794 return v;
1795#else
1796 return 0;
1797#endif
1798}
1799
1800/*****************************************************************************/
1801
1802#if EV_AVOID_STDIO
1803ecb_noinline ecb_cold
1804static void
1805ev_printerr (const char *msg)
1806{
1807 write (STDERR_FILENO, msg, strlen (msg));
1808}
1809#endif
1810
430static void (*syserr_cb)(const char *msg); 1811static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
431 1812
1813ecb_cold
432void 1814void
433ev_set_syserr_cb (void (*cb)(const char *msg)) 1815ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
434{ 1816{
435 syserr_cb = cb; 1817 syserr_cb = cb;
436} 1818}
437 1819
438static void noinline 1820ecb_noinline ecb_cold
1821static void
439ev_syserr (const char *msg) 1822ev_syserr (const char *msg)
440{ 1823{
441 if (!msg) 1824 if (!msg)
442 msg = "(libev) system error"; 1825 msg = "(libev) system error";
443 1826
444 if (syserr_cb) 1827 if (syserr_cb)
445 syserr_cb (msg); 1828 syserr_cb (msg);
446 else 1829 else
447 { 1830 {
1831#if EV_AVOID_STDIO
1832 ev_printerr (msg);
1833 ev_printerr (": ");
1834 ev_printerr (strerror (errno));
1835 ev_printerr ("\n");
1836#else
448 perror (msg); 1837 perror (msg);
1838#endif
449 abort (); 1839 abort ();
450 } 1840 }
451} 1841}
452 1842
453static void * 1843static void *
454ev_realloc_emul (void *ptr, long size) 1844ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
455{ 1845{
456 /* some systems, notably openbsd and darwin, fail to properly 1846 /* some systems, notably openbsd and darwin, fail to properly
457 * implement realloc (x, 0) (as required by both ansi c-98 and 1847 * implement realloc (x, 0) (as required by both ansi c-89 and
458 * the single unix specification, so work around them here. 1848 * the single unix specification, so work around them here.
1849 * recently, also (at least) fedora and debian started breaking it,
1850 * despite documenting it otherwise.
459 */ 1851 */
460 1852
461 if (size) 1853 if (size)
462 return realloc (ptr, size); 1854 return realloc (ptr, size);
463 1855
464 free (ptr); 1856 free (ptr);
465 return 0; 1857 return 0;
466} 1858}
467 1859
468static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1860static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
469 1861
1862ecb_cold
470void 1863void
471ev_set_allocator (void *(*cb)(void *ptr, long size)) 1864ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
472{ 1865{
473 alloc = cb; 1866 alloc = cb;
474} 1867}
475 1868
476inline_speed void * 1869inline_speed void *
… …
478{ 1871{
479 ptr = alloc (ptr, size); 1872 ptr = alloc (ptr, size);
480 1873
481 if (!ptr && size) 1874 if (!ptr && size)
482 { 1875 {
1876#if EV_AVOID_STDIO
1877 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1878#else
483 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1879 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1880#endif
484 abort (); 1881 abort ();
485 } 1882 }
486 1883
487 return ptr; 1884 return ptr;
488} 1885}
… …
490#define ev_malloc(size) ev_realloc (0, (size)) 1887#define ev_malloc(size) ev_realloc (0, (size))
491#define ev_free(ptr) ev_realloc ((ptr), 0) 1888#define ev_free(ptr) ev_realloc ((ptr), 0)
492 1889
493/*****************************************************************************/ 1890/*****************************************************************************/
494 1891
1892/* set in reify when reification needed */
1893#define EV_ANFD_REIFY 1
1894
495/* file descriptor info structure */ 1895/* file descriptor info structure */
496typedef struct 1896typedef struct
497{ 1897{
498 WL head; 1898 WL head;
499 unsigned char events; /* the events watched for */ 1899 unsigned char events; /* the events watched for */
500 unsigned char reify; /* flag set when this ANFD needs reification */ 1900 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
501 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1901 unsigned char emask; /* some backends store the actual kernel mask in here */
502 unsigned char unused; 1902 unsigned char eflags; /* flags field for use by backends */
503#if EV_USE_EPOLL 1903#if EV_USE_EPOLL
504 unsigned int egen; /* generation counter to counter epoll bugs */ 1904 unsigned int egen; /* generation counter to counter epoll bugs */
505#endif 1905#endif
506#if EV_SELECT_IS_WINSOCKET 1906#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
507 SOCKET handle; 1907 SOCKET handle;
1908#endif
1909#if EV_USE_IOCP
1910 OVERLAPPED or, ow;
508#endif 1911#endif
509} ANFD; 1912} ANFD;
510 1913
511/* stores the pending event set for a given watcher */ 1914/* stores the pending event set for a given watcher */
512typedef struct 1915typedef struct
… …
554 #undef VAR 1957 #undef VAR
555 }; 1958 };
556 #include "ev_wrap.h" 1959 #include "ev_wrap.h"
557 1960
558 static struct ev_loop default_loop_struct; 1961 static struct ev_loop default_loop_struct;
559 struct ev_loop *ev_default_loop_ptr; 1962 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
560 1963
561#else 1964#else
562 1965
563 ev_tstamp ev_rt_now; 1966 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
564 #define VAR(name,decl) static decl; 1967 #define VAR(name,decl) static decl;
565 #include "ev_vars.h" 1968 #include "ev_vars.h"
566 #undef VAR 1969 #undef VAR
567 1970
568 static int ev_default_loop_ptr; 1971 static int ev_default_loop_ptr;
569 1972
570#endif 1973#endif
571 1974
1975#if EV_FEATURE_API
1976# define EV_RELEASE_CB if (ecb_expect_false (release_cb)) release_cb (EV_A)
1977# define EV_ACQUIRE_CB if (ecb_expect_false (acquire_cb)) acquire_cb (EV_A)
1978# define EV_INVOKE_PENDING invoke_cb (EV_A)
1979#else
1980# define EV_RELEASE_CB (void)0
1981# define EV_ACQUIRE_CB (void)0
1982# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
1983#endif
1984
1985#define EVBREAK_RECURSE 0x80
1986
572/*****************************************************************************/ 1987/*****************************************************************************/
573 1988
574#ifndef EV_HAVE_EV_TIME 1989#ifndef EV_HAVE_EV_TIME
575ev_tstamp 1990ev_tstamp
576ev_time (void) 1991ev_time (void) EV_NOEXCEPT
577{ 1992{
578#if EV_USE_REALTIME 1993#if EV_USE_REALTIME
579 if (expect_true (have_realtime)) 1994 if (ecb_expect_true (have_realtime))
580 { 1995 {
581 struct timespec ts; 1996 struct timespec ts;
582 clock_gettime (CLOCK_REALTIME, &ts); 1997 clock_gettime (CLOCK_REALTIME, &ts);
583 return ts.tv_sec + ts.tv_nsec * 1e-9; 1998 return ts.tv_sec + ts.tv_nsec * 1e-9;
584 } 1999 }
… …
592 2007
593inline_size ev_tstamp 2008inline_size ev_tstamp
594get_clock (void) 2009get_clock (void)
595{ 2010{
596#if EV_USE_MONOTONIC 2011#if EV_USE_MONOTONIC
597 if (expect_true (have_monotonic)) 2012 if (ecb_expect_true (have_monotonic))
598 { 2013 {
599 struct timespec ts; 2014 struct timespec ts;
600 clock_gettime (CLOCK_MONOTONIC, &ts); 2015 clock_gettime (CLOCK_MONOTONIC, &ts);
601 return ts.tv_sec + ts.tv_nsec * 1e-9; 2016 return ts.tv_sec + ts.tv_nsec * 1e-9;
602 } 2017 }
… …
605 return ev_time (); 2020 return ev_time ();
606} 2021}
607 2022
608#if EV_MULTIPLICITY 2023#if EV_MULTIPLICITY
609ev_tstamp 2024ev_tstamp
610ev_now (EV_P) 2025ev_now (EV_P) EV_NOEXCEPT
611{ 2026{
612 return ev_rt_now; 2027 return ev_rt_now;
613} 2028}
614#endif 2029#endif
615 2030
616void 2031void
617ev_sleep (ev_tstamp delay) 2032ev_sleep (ev_tstamp delay) EV_NOEXCEPT
618{ 2033{
619 if (delay > 0.) 2034 if (delay > 0.)
620 { 2035 {
621#if EV_USE_NANOSLEEP 2036#if EV_USE_NANOSLEEP
622 struct timespec ts; 2037 struct timespec ts;
623 2038
624 ts.tv_sec = (time_t)delay; 2039 EV_TS_SET (ts, delay);
625 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
626
627 nanosleep (&ts, 0); 2040 nanosleep (&ts, 0);
628#elif defined(_WIN32) 2041#elif defined _WIN32
2042 /* maybe this should round up, as ms is very low resolution */
2043 /* compared to select (µs) or nanosleep (ns) */
629 Sleep ((unsigned long)(delay * 1e3)); 2044 Sleep ((unsigned long)(delay * 1e3));
630#else 2045#else
631 struct timeval tv; 2046 struct timeval tv;
632 2047
633 tv.tv_sec = (time_t)delay;
634 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
635
636 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 2048 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
637 /* somehting not guaranteed by newer posix versions, but guaranteed */ 2049 /* something not guaranteed by newer posix versions, but guaranteed */
638 /* by older ones */ 2050 /* by older ones */
2051 EV_TV_SET (tv, delay);
639 select (0, 0, 0, 0, &tv); 2052 select (0, 0, 0, 0, &tv);
640#endif 2053#endif
641 } 2054 }
642} 2055}
643 2056
644/*****************************************************************************/ 2057/*****************************************************************************/
645 2058
646#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 2059#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
647 2060
648/* find a suitable new size for the given array, */ 2061/* find a suitable new size for the given array, */
649/* hopefully by rounding to a ncie-to-malloc size */ 2062/* hopefully by rounding to a nice-to-malloc size */
650inline_size int 2063inline_size int
651array_nextsize (int elem, int cur, int cnt) 2064array_nextsize (int elem, int cur, int cnt)
652{ 2065{
653 int ncur = cur + 1; 2066 int ncur = cur + 1;
654 2067
655 do 2068 do
656 ncur <<= 1; 2069 ncur <<= 1;
657 while (cnt > ncur); 2070 while (cnt > ncur);
658 2071
659 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 2072 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
660 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 2073 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
661 { 2074 {
662 ncur *= elem; 2075 ncur *= elem;
663 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 2076 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
664 ncur = ncur - sizeof (void *) * 4; 2077 ncur = ncur - sizeof (void *) * 4;
… …
666 } 2079 }
667 2080
668 return ncur; 2081 return ncur;
669} 2082}
670 2083
671static noinline void * 2084ecb_noinline ecb_cold
2085static void *
672array_realloc (int elem, void *base, int *cur, int cnt) 2086array_realloc (int elem, void *base, int *cur, int cnt)
673{ 2087{
674 *cur = array_nextsize (elem, *cur, cnt); 2088 *cur = array_nextsize (elem, *cur, cnt);
675 return ev_realloc (base, elem * *cur); 2089 return ev_realloc (base, elem * *cur);
676} 2090}
677 2091
2092#define array_needsize_noinit(base,offset,count)
2093
678#define array_init_zero(base,count) \ 2094#define array_needsize_zerofill(base,offset,count) \
679 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 2095 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
680 2096
681#define array_needsize(type,base,cur,cnt,init) \ 2097#define array_needsize(type,base,cur,cnt,init) \
682 if (expect_false ((cnt) > (cur))) \ 2098 if (ecb_expect_false ((cnt) > (cur))) \
683 { \ 2099 { \
684 int ocur_ = (cur); \ 2100 ecb_unused int ocur_ = (cur); \
685 (base) = (type *)array_realloc \ 2101 (base) = (type *)array_realloc \
686 (sizeof (type), (base), &(cur), (cnt)); \ 2102 (sizeof (type), (base), &(cur), (cnt)); \
687 init ((base) + (ocur_), (cur) - ocur_); \ 2103 init ((base), ocur_, ((cur) - ocur_)); \
688 } 2104 }
689 2105
690#if 0 2106#if 0
691#define array_slim(type,stem) \ 2107#define array_slim(type,stem) \
692 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2108 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
… …
701 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 2117 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
702 2118
703/*****************************************************************************/ 2119/*****************************************************************************/
704 2120
705/* dummy callback for pending events */ 2121/* dummy callback for pending events */
706static void noinline 2122ecb_noinline
2123static void
707pendingcb (EV_P_ ev_prepare *w, int revents) 2124pendingcb (EV_P_ ev_prepare *w, int revents)
708{ 2125{
709} 2126}
710 2127
711void noinline 2128ecb_noinline
2129void
712ev_feed_event (EV_P_ void *w, int revents) 2130ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
713{ 2131{
714 W w_ = (W)w; 2132 W w_ = (W)w;
715 int pri = ABSPRI (w_); 2133 int pri = ABSPRI (w_);
716 2134
717 if (expect_false (w_->pending)) 2135 if (ecb_expect_false (w_->pending))
718 pendings [pri][w_->pending - 1].events |= revents; 2136 pendings [pri][w_->pending - 1].events |= revents;
719 else 2137 else
720 { 2138 {
721 w_->pending = ++pendingcnt [pri]; 2139 w_->pending = ++pendingcnt [pri];
722 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2140 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
723 pendings [pri][w_->pending - 1].w = w_; 2141 pendings [pri][w_->pending - 1].w = w_;
724 pendings [pri][w_->pending - 1].events = revents; 2142 pendings [pri][w_->pending - 1].events = revents;
725 } 2143 }
2144
2145 pendingpri = NUMPRI - 1;
726} 2146}
727 2147
728inline_speed void 2148inline_speed void
729feed_reverse (EV_P_ W w) 2149feed_reverse (EV_P_ W w)
730{ 2150{
731 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2151 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
732 rfeeds [rfeedcnt++] = w; 2152 rfeeds [rfeedcnt++] = w;
733} 2153}
734 2154
735inline_size void 2155inline_size void
736feed_reverse_done (EV_P_ int revents) 2156feed_reverse_done (EV_P_ int revents)
… …
750} 2170}
751 2171
752/*****************************************************************************/ 2172/*****************************************************************************/
753 2173
754inline_speed void 2174inline_speed void
755fd_event (EV_P_ int fd, int revents) 2175fd_event_nocheck (EV_P_ int fd, int revents)
756{ 2176{
757 ANFD *anfd = anfds + fd; 2177 ANFD *anfd = anfds + fd;
758 ev_io *w; 2178 ev_io *w;
759 2179
760 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2180 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
764 if (ev) 2184 if (ev)
765 ev_feed_event (EV_A_ (W)w, ev); 2185 ev_feed_event (EV_A_ (W)w, ev);
766 } 2186 }
767} 2187}
768 2188
769void 2189/* do not submit kernel events for fds that have reify set */
2190/* because that means they changed while we were polling for new events */
2191inline_speed void
770ev_feed_fd_event (EV_P_ int fd, int revents) 2192fd_event (EV_P_ int fd, int revents)
2193{
2194 ANFD *anfd = anfds + fd;
2195
2196 if (ecb_expect_true (!anfd->reify))
2197 fd_event_nocheck (EV_A_ fd, revents);
2198}
2199
2200void
2201ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
771{ 2202{
772 if (fd >= 0 && fd < anfdmax) 2203 if (fd >= 0 && fd < anfdmax)
773 fd_event (EV_A_ fd, revents); 2204 fd_event_nocheck (EV_A_ fd, revents);
774} 2205}
775 2206
776/* make sure the external fd watch events are in-sync */ 2207/* make sure the external fd watch events are in-sync */
777/* with the kernel/libev internal state */ 2208/* with the kernel/libev internal state */
778inline_size void 2209inline_size void
779fd_reify (EV_P) 2210fd_reify (EV_P)
780{ 2211{
781 int i; 2212 int i;
782 2213
2214#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
2215 for (i = 0; i < fdchangecnt; ++i)
2216 {
2217 int fd = fdchanges [i];
2218 ANFD *anfd = anfds + fd;
2219
2220 if (anfd->reify & EV__IOFDSET && anfd->head)
2221 {
2222 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
2223
2224 if (handle != anfd->handle)
2225 {
2226 unsigned long arg;
2227
2228 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
2229
2230 /* handle changed, but fd didn't - we need to do it in two steps */
2231 backend_modify (EV_A_ fd, anfd->events, 0);
2232 anfd->events = 0;
2233 anfd->handle = handle;
2234 }
2235 }
2236 }
2237#endif
2238
783 for (i = 0; i < fdchangecnt; ++i) 2239 for (i = 0; i < fdchangecnt; ++i)
784 { 2240 {
785 int fd = fdchanges [i]; 2241 int fd = fdchanges [i];
786 ANFD *anfd = anfds + fd; 2242 ANFD *anfd = anfds + fd;
787 ev_io *w; 2243 ev_io *w;
788 2244
789 unsigned char events = 0; 2245 unsigned char o_events = anfd->events;
2246 unsigned char o_reify = anfd->reify;
790 2247
791 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2248 anfd->reify = 0;
792 events |= (unsigned char)w->events;
793 2249
794#if EV_SELECT_IS_WINSOCKET 2250 /*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
795 if (events)
796 { 2251 {
797 unsigned long arg; 2252 anfd->events = 0;
798 #ifdef EV_FD_TO_WIN32_HANDLE 2253
799 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 2254 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
800 #else 2255 anfd->events |= (unsigned char)w->events;
801 anfd->handle = _get_osfhandle (fd); 2256
802 #endif 2257 if (o_events != anfd->events)
803 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 2258 o_reify = EV__IOFDSET; /* actually |= */
804 } 2259 }
805#endif
806 2260
807 { 2261 if (o_reify & EV__IOFDSET)
808 unsigned char o_events = anfd->events;
809 unsigned char o_reify = anfd->reify;
810
811 anfd->reify = 0;
812 anfd->events = events;
813
814 if (o_events != events || o_reify & EV__IOFDSET)
815 backend_modify (EV_A_ fd, o_events, events); 2262 backend_modify (EV_A_ fd, o_events, anfd->events);
816 }
817 } 2263 }
818 2264
819 fdchangecnt = 0; 2265 fdchangecnt = 0;
820} 2266}
821 2267
822/* something about the given fd changed */ 2268/* something about the given fd changed */
823inline_size void 2269inline_size
2270void
824fd_change (EV_P_ int fd, int flags) 2271fd_change (EV_P_ int fd, int flags)
825{ 2272{
826 unsigned char reify = anfds [fd].reify; 2273 unsigned char reify = anfds [fd].reify;
827 anfds [fd].reify |= flags; 2274 anfds [fd].reify |= flags;
828 2275
829 if (expect_true (!reify)) 2276 if (ecb_expect_true (!reify))
830 { 2277 {
831 ++fdchangecnt; 2278 ++fdchangecnt;
832 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2279 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
833 fdchanges [fdchangecnt - 1] = fd; 2280 fdchanges [fdchangecnt - 1] = fd;
834 } 2281 }
835} 2282}
836 2283
837/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2284/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
838inline_speed void 2285inline_speed ecb_cold void
839fd_kill (EV_P_ int fd) 2286fd_kill (EV_P_ int fd)
840{ 2287{
841 ev_io *w; 2288 ev_io *w;
842 2289
843 while ((w = (ev_io *)anfds [fd].head)) 2290 while ((w = (ev_io *)anfds [fd].head))
… …
845 ev_io_stop (EV_A_ w); 2292 ev_io_stop (EV_A_ w);
846 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2293 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
847 } 2294 }
848} 2295}
849 2296
850/* check whether the given fd is atcually valid, for error recovery */ 2297/* check whether the given fd is actually valid, for error recovery */
851inline_size int 2298inline_size ecb_cold int
852fd_valid (int fd) 2299fd_valid (int fd)
853{ 2300{
854#ifdef _WIN32 2301#ifdef _WIN32
855 return _get_osfhandle (fd) != -1; 2302 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
856#else 2303#else
857 return fcntl (fd, F_GETFD) != -1; 2304 return fcntl (fd, F_GETFD) != -1;
858#endif 2305#endif
859} 2306}
860 2307
861/* called on EBADF to verify fds */ 2308/* called on EBADF to verify fds */
862static void noinline 2309ecb_noinline ecb_cold
2310static void
863fd_ebadf (EV_P) 2311fd_ebadf (EV_P)
864{ 2312{
865 int fd; 2313 int fd;
866 2314
867 for (fd = 0; fd < anfdmax; ++fd) 2315 for (fd = 0; fd < anfdmax; ++fd)
… …
869 if (!fd_valid (fd) && errno == EBADF) 2317 if (!fd_valid (fd) && errno == EBADF)
870 fd_kill (EV_A_ fd); 2318 fd_kill (EV_A_ fd);
871} 2319}
872 2320
873/* called on ENOMEM in select/poll to kill some fds and retry */ 2321/* called on ENOMEM in select/poll to kill some fds and retry */
874static void noinline 2322ecb_noinline ecb_cold
2323static void
875fd_enomem (EV_P) 2324fd_enomem (EV_P)
876{ 2325{
877 int fd; 2326 int fd;
878 2327
879 for (fd = anfdmax; fd--; ) 2328 for (fd = anfdmax; fd--; )
880 if (anfds [fd].events) 2329 if (anfds [fd].events)
881 { 2330 {
882 fd_kill (EV_A_ fd); 2331 fd_kill (EV_A_ fd);
883 return; 2332 break;
884 } 2333 }
885} 2334}
886 2335
887/* usually called after fork if backend needs to re-arm all fds from scratch */ 2336/* usually called after fork if backend needs to re-arm all fds from scratch */
888static void noinline 2337ecb_noinline
2338static void
889fd_rearm_all (EV_P) 2339fd_rearm_all (EV_P)
890{ 2340{
891 int fd; 2341 int fd;
892 2342
893 for (fd = 0; fd < anfdmax; ++fd) 2343 for (fd = 0; fd < anfdmax; ++fd)
894 if (anfds [fd].events) 2344 if (anfds [fd].events)
895 { 2345 {
896 anfds [fd].events = 0; 2346 anfds [fd].events = 0;
897 anfds [fd].emask = 0; 2347 anfds [fd].emask = 0;
898 fd_change (EV_A_ fd, EV__IOFDSET | 1); 2348 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
899 } 2349 }
900} 2350}
901 2351
2352/* used to prepare libev internal fd's */
2353/* this is not fork-safe */
2354inline_speed void
2355fd_intern (int fd)
2356{
2357#ifdef _WIN32
2358 unsigned long arg = 1;
2359 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
2360#else
2361 fcntl (fd, F_SETFD, FD_CLOEXEC);
2362 fcntl (fd, F_SETFL, O_NONBLOCK);
2363#endif
2364}
2365
902/*****************************************************************************/ 2366/*****************************************************************************/
903 2367
904/* 2368/*
905 * the heap functions want a real array index. array index 0 uis guaranteed to not 2369 * the heap functions want a real array index. array index 0 is guaranteed to not
906 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 2370 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
907 * the branching factor of the d-tree. 2371 * the branching factor of the d-tree.
908 */ 2372 */
909 2373
910/* 2374/*
… …
932 ev_tstamp minat; 2396 ev_tstamp minat;
933 ANHE *minpos; 2397 ANHE *minpos;
934 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; 2398 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
935 2399
936 /* find minimum child */ 2400 /* find minimum child */
937 if (expect_true (pos + DHEAP - 1 < E)) 2401 if (ecb_expect_true (pos + DHEAP - 1 < E))
938 { 2402 {
939 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2403 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
940 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2404 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
941 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2405 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
942 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2406 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
… …
978 2442
979 for (;;) 2443 for (;;)
980 { 2444 {
981 int c = k << 1; 2445 int c = k << 1;
982 2446
983 if (c > N + HEAP0 - 1) 2447 if (c >= N + HEAP0)
984 break; 2448 break;
985 2449
986 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 2450 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
987 ? 1 : 0; 2451 ? 1 : 0;
988 2452
… …
1024 2488
1025/* move an element suitably so it is in a correct place */ 2489/* move an element suitably so it is in a correct place */
1026inline_size void 2490inline_size void
1027adjustheap (ANHE *heap, int N, int k) 2491adjustheap (ANHE *heap, int N, int k)
1028{ 2492{
1029 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 2493 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1030 upheap (heap, k); 2494 upheap (heap, k);
1031 else 2495 else
1032 downheap (heap, N, k); 2496 downheap (heap, N, k);
1033} 2497}
1034 2498
… …
1047/*****************************************************************************/ 2511/*****************************************************************************/
1048 2512
1049/* associate signal watchers to a signal signal */ 2513/* associate signal watchers to a signal signal */
1050typedef struct 2514typedef struct
1051{ 2515{
2516 EV_ATOMIC_T pending;
2517#if EV_MULTIPLICITY
2518 EV_P;
2519#endif
1052 WL head; 2520 WL head;
1053 EV_ATOMIC_T gotsig;
1054} ANSIG; 2521} ANSIG;
1055 2522
1056static ANSIG *signals; 2523static ANSIG signals [EV_NSIG - 1];
1057static int signalmax;
1058
1059static EV_ATOMIC_T gotsig;
1060 2524
1061/*****************************************************************************/ 2525/*****************************************************************************/
1062 2526
1063/* used to prepare libev internal fd's */ 2527#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1064/* this is not fork-safe */ 2528
2529ecb_noinline ecb_cold
2530static void
2531evpipe_init (EV_P)
2532{
2533 if (!ev_is_active (&pipe_w))
2534 {
2535 int fds [2];
2536
2537# if EV_USE_EVENTFD
2538 fds [0] = -1;
2539 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
2540 if (fds [1] < 0 && errno == EINVAL)
2541 fds [1] = eventfd (0, 0);
2542
2543 if (fds [1] < 0)
2544# endif
2545 {
2546 while (pipe (fds))
2547 ev_syserr ("(libev) error creating signal/async pipe");
2548
2549 fd_intern (fds [0]);
2550 }
2551
2552 evpipe [0] = fds [0];
2553
2554 if (evpipe [1] < 0)
2555 evpipe [1] = fds [1]; /* first call, set write fd */
2556 else
2557 {
2558 /* on subsequent calls, do not change evpipe [1] */
2559 /* so that evpipe_write can always rely on its value. */
2560 /* this branch does not do anything sensible on windows, */
2561 /* so must not be executed on windows */
2562
2563 dup2 (fds [1], evpipe [1]);
2564 close (fds [1]);
2565 }
2566
2567 fd_intern (evpipe [1]);
2568
2569 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2570 ev_io_start (EV_A_ &pipe_w);
2571 ev_unref (EV_A); /* watcher should not keep loop alive */
2572 }
2573}
2574
1065inline_speed void 2575inline_speed void
1066fd_intern (int fd) 2576evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1067{ 2577{
1068#ifdef _WIN32 2578 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1069 unsigned long arg = 1;
1070 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1071#else
1072 fcntl (fd, F_SETFD, FD_CLOEXEC);
1073 fcntl (fd, F_SETFL, O_NONBLOCK);
1074#endif
1075}
1076 2579
1077static void noinline 2580 if (ecb_expect_true (*flag))
1078evpipe_init (EV_P) 2581 return;
1079{ 2582
1080 if (!ev_is_active (&pipe_w)) 2583 *flag = 1;
2584 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2585
2586 pipe_write_skipped = 1;
2587
2588 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2589
2590 if (pipe_write_wanted)
1081 { 2591 {
2592 int old_errno;
2593
2594 pipe_write_skipped = 0;
2595 ECB_MEMORY_FENCE_RELEASE;
2596
2597 old_errno = errno; /* save errno because write will clobber it */
2598
1082#if EV_USE_EVENTFD 2599#if EV_USE_EVENTFD
1083 if ((evfd = eventfd (0, 0)) >= 0) 2600 if (evpipe [0] < 0)
1084 { 2601 {
1085 evpipe [0] = -1; 2602 uint64_t counter = 1;
1086 fd_intern (evfd); 2603 write (evpipe [1], &counter, sizeof (uint64_t));
1087 ev_io_set (&pipe_w, evfd, EV_READ);
1088 } 2604 }
1089 else 2605 else
1090#endif 2606#endif
1091 { 2607 {
1092 while (pipe (evpipe)) 2608#ifdef _WIN32
1093 ev_syserr ("(libev) error creating signal/async pipe"); 2609 WSABUF buf;
1094 2610 DWORD sent;
1095 fd_intern (evpipe [0]); 2611 buf.buf = (char *)&buf;
1096 fd_intern (evpipe [1]); 2612 buf.len = 1;
1097 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2613 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2614#else
2615 write (evpipe [1], &(evpipe [1]), 1);
2616#endif
1098 } 2617 }
1099
1100 ev_io_start (EV_A_ &pipe_w);
1101 ev_unref (EV_A); /* watcher should not keep loop alive */
1102 }
1103}
1104
1105inline_size void
1106evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1107{
1108 if (!*flag)
1109 {
1110 int old_errno = errno; /* save errno because write might clobber it */
1111
1112 *flag = 1;
1113
1114#if EV_USE_EVENTFD
1115 if (evfd >= 0)
1116 {
1117 uint64_t counter = 1;
1118 write (evfd, &counter, sizeof (uint64_t));
1119 }
1120 else
1121#endif
1122 write (evpipe [1], &old_errno, 1);
1123 2618
1124 errno = old_errno; 2619 errno = old_errno;
1125 } 2620 }
1126} 2621}
1127 2622
1128/* called whenever the libev signal pipe */ 2623/* called whenever the libev signal pipe */
1129/* got some events (signal, async) */ 2624/* got some events (signal, async) */
1130static void 2625static void
1131pipecb (EV_P_ ev_io *iow, int revents) 2626pipecb (EV_P_ ev_io *iow, int revents)
1132{ 2627{
2628 int i;
2629
2630 if (revents & EV_READ)
2631 {
1133#if EV_USE_EVENTFD 2632#if EV_USE_EVENTFD
1134 if (evfd >= 0) 2633 if (evpipe [0] < 0)
1135 { 2634 {
1136 uint64_t counter; 2635 uint64_t counter;
1137 read (evfd, &counter, sizeof (uint64_t)); 2636 read (evpipe [1], &counter, sizeof (uint64_t));
1138 } 2637 }
1139 else 2638 else
1140#endif 2639#endif
1141 { 2640 {
1142 char dummy; 2641 char dummy[4];
2642#ifdef _WIN32
2643 WSABUF buf;
2644 DWORD recvd;
2645 DWORD flags = 0;
2646 buf.buf = dummy;
2647 buf.len = sizeof (dummy);
2648 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2649#else
1143 read (evpipe [0], &dummy, 1); 2650 read (evpipe [0], &dummy, sizeof (dummy));
2651#endif
2652 }
2653 }
2654
2655 pipe_write_skipped = 0;
2656
2657 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2658
2659#if EV_SIGNAL_ENABLE
2660 if (sig_pending)
1144 } 2661 {
2662 sig_pending = 0;
1145 2663
1146 if (gotsig && ev_is_default_loop (EV_A)) 2664 ECB_MEMORY_FENCE;
1147 {
1148 int signum;
1149 gotsig = 0;
1150 2665
1151 for (signum = signalmax; signum--; ) 2666 for (i = EV_NSIG - 1; i--; )
1152 if (signals [signum].gotsig) 2667 if (ecb_expect_false (signals [i].pending))
1153 ev_feed_signal_event (EV_A_ signum + 1); 2668 ev_feed_signal_event (EV_A_ i + 1);
1154 } 2669 }
2670#endif
1155 2671
1156#if EV_ASYNC_ENABLE 2672#if EV_ASYNC_ENABLE
1157 if (gotasync) 2673 if (async_pending)
1158 { 2674 {
1159 int i; 2675 async_pending = 0;
1160 gotasync = 0; 2676
2677 ECB_MEMORY_FENCE;
1161 2678
1162 for (i = asynccnt; i--; ) 2679 for (i = asynccnt; i--; )
1163 if (asyncs [i]->sent) 2680 if (asyncs [i]->sent)
1164 { 2681 {
1165 asyncs [i]->sent = 0; 2682 asyncs [i]->sent = 0;
2683 ECB_MEMORY_FENCE_RELEASE;
1166 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2684 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1167 } 2685 }
1168 } 2686 }
1169#endif 2687#endif
1170} 2688}
1171 2689
1172/*****************************************************************************/ 2690/*****************************************************************************/
1173 2691
2692void
2693ev_feed_signal (int signum) EV_NOEXCEPT
2694{
2695#if EV_MULTIPLICITY
2696 EV_P;
2697 ECB_MEMORY_FENCE_ACQUIRE;
2698 EV_A = signals [signum - 1].loop;
2699
2700 if (!EV_A)
2701 return;
2702#endif
2703
2704 signals [signum - 1].pending = 1;
2705 evpipe_write (EV_A_ &sig_pending);
2706}
2707
1174static void 2708static void
1175ev_sighandler (int signum) 2709ev_sighandler (int signum)
1176{ 2710{
2711#ifdef _WIN32
2712 signal (signum, ev_sighandler);
2713#endif
2714
2715 ev_feed_signal (signum);
2716}
2717
2718ecb_noinline
2719void
2720ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
2721{
2722 WL w;
2723
2724 if (ecb_expect_false (signum <= 0 || signum >= EV_NSIG))
2725 return;
2726
2727 --signum;
2728
1177#if EV_MULTIPLICITY 2729#if EV_MULTIPLICITY
1178 struct ev_loop *loop = &default_loop_struct; 2730 /* it is permissible to try to feed a signal to the wrong loop */
1179#endif 2731 /* or, likely more useful, feeding a signal nobody is waiting for */
1180 2732
1181#if _WIN32 2733 if (ecb_expect_false (signals [signum].loop != EV_A))
1182 signal (signum, ev_sighandler);
1183#endif
1184
1185 signals [signum - 1].gotsig = 1;
1186 evpipe_write (EV_A_ &gotsig);
1187}
1188
1189void noinline
1190ev_feed_signal_event (EV_P_ int signum)
1191{
1192 WL w;
1193
1194#if EV_MULTIPLICITY
1195 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1196#endif
1197
1198 --signum;
1199
1200 if (signum < 0 || signum >= signalmax)
1201 return; 2734 return;
2735#endif
1202 2736
1203 signals [signum].gotsig = 0; 2737 signals [signum].pending = 0;
2738 ECB_MEMORY_FENCE_RELEASE;
1204 2739
1205 for (w = signals [signum].head; w; w = w->next) 2740 for (w = signals [signum].head; w; w = w->next)
1206 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2741 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1207} 2742}
1208 2743
2744#if EV_USE_SIGNALFD
2745static void
2746sigfdcb (EV_P_ ev_io *iow, int revents)
2747{
2748 struct signalfd_siginfo si[2], *sip; /* these structs are big */
2749
2750 for (;;)
2751 {
2752 ssize_t res = read (sigfd, si, sizeof (si));
2753
2754 /* not ISO-C, as res might be -1, but works with SuS */
2755 for (sip = si; (char *)sip < (char *)si + res; ++sip)
2756 ev_feed_signal_event (EV_A_ sip->ssi_signo);
2757
2758 if (res < (ssize_t)sizeof (si))
2759 break;
2760 }
2761}
2762#endif
2763
2764#endif
2765
1209/*****************************************************************************/ 2766/*****************************************************************************/
1210 2767
2768#if EV_CHILD_ENABLE
1211static WL childs [EV_PID_HASHSIZE]; 2769static WL childs [EV_PID_HASHSIZE];
1212
1213#ifndef _WIN32
1214 2770
1215static ev_signal childev; 2771static ev_signal childev;
1216 2772
1217#ifndef WIFCONTINUED 2773#ifndef WIFCONTINUED
1218# define WIFCONTINUED(status) 0 2774# define WIFCONTINUED(status) 0
… …
1223child_reap (EV_P_ int chain, int pid, int status) 2779child_reap (EV_P_ int chain, int pid, int status)
1224{ 2780{
1225 ev_child *w; 2781 ev_child *w;
1226 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2782 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1227 2783
1228 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2784 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1229 { 2785 {
1230 if ((w->pid == pid || !w->pid) 2786 if ((w->pid == pid || !w->pid)
1231 && (!traced || (w->flags & 1))) 2787 && (!traced || (w->flags & 1)))
1232 { 2788 {
1233 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2789 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1258 /* make sure we are called again until all children have been reaped */ 2814 /* make sure we are called again until all children have been reaped */
1259 /* we need to do it this way so that the callback gets called before we continue */ 2815 /* we need to do it this way so that the callback gets called before we continue */
1260 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2816 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1261 2817
1262 child_reap (EV_A_ pid, pid, status); 2818 child_reap (EV_A_ pid, pid, status);
1263 if (EV_PID_HASHSIZE > 1) 2819 if ((EV_PID_HASHSIZE) > 1)
1264 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2820 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1265} 2821}
1266 2822
1267#endif 2823#endif
1268 2824
1269/*****************************************************************************/ 2825/*****************************************************************************/
1270 2826
2827#if EV_USE_IOCP
2828# include "ev_iocp.c"
2829#endif
1271#if EV_USE_PORT 2830#if EV_USE_PORT
1272# include "ev_port.c" 2831# include "ev_port.c"
1273#endif 2832#endif
1274#if EV_USE_KQUEUE 2833#if EV_USE_KQUEUE
1275# include "ev_kqueue.c" 2834# include "ev_kqueue.c"
1276#endif 2835#endif
1277#if EV_USE_EPOLL 2836#if EV_USE_EPOLL
1278# include "ev_epoll.c" 2837# include "ev_epoll.c"
1279#endif 2838#endif
2839#if EV_USE_LINUXAIO
2840# include "ev_linuxaio.c"
2841#endif
2842#if EV_USE_IOURING
2843# include "ev_iouring.c"
2844#endif
1280#if EV_USE_POLL 2845#if EV_USE_POLL
1281# include "ev_poll.c" 2846# include "ev_poll.c"
1282#endif 2847#endif
1283#if EV_USE_SELECT 2848#if EV_USE_SELECT
1284# include "ev_select.c" 2849# include "ev_select.c"
1285#endif 2850#endif
1286 2851
1287int 2852ecb_cold int
1288ev_version_major (void) 2853ev_version_major (void) EV_NOEXCEPT
1289{ 2854{
1290 return EV_VERSION_MAJOR; 2855 return EV_VERSION_MAJOR;
1291} 2856}
1292 2857
1293int 2858ecb_cold int
1294ev_version_minor (void) 2859ev_version_minor (void) EV_NOEXCEPT
1295{ 2860{
1296 return EV_VERSION_MINOR; 2861 return EV_VERSION_MINOR;
1297} 2862}
1298 2863
1299/* return true if we are running with elevated privileges and should ignore env variables */ 2864/* return true if we are running with elevated privileges and should ignore env variables */
1300int inline_size 2865inline_size ecb_cold int
1301enable_secure (void) 2866enable_secure (void)
1302{ 2867{
1303#ifdef _WIN32 2868#ifdef _WIN32
1304 return 0; 2869 return 0;
1305#else 2870#else
1306 return getuid () != geteuid () 2871 return getuid () != geteuid ()
1307 || getgid () != getegid (); 2872 || getgid () != getegid ();
1308#endif 2873#endif
1309} 2874}
1310 2875
2876ecb_cold
1311unsigned int 2877unsigned int
1312ev_supported_backends (void) 2878ev_supported_backends (void) EV_NOEXCEPT
1313{ 2879{
1314 unsigned int flags = 0; 2880 unsigned int flags = 0;
1315 2881
1316 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2882 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1317 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2883 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
1318 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 2884 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2885 if (EV_USE_LINUXAIO) flags |= EVBACKEND_LINUXAIO;
2886 if (EV_USE_IOURING ) flags |= EVBACKEND_IOURING;
1319 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 2887 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
1320 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2888 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
1321 2889
1322 return flags; 2890 return flags;
1323} 2891}
1324 2892
2893ecb_cold
1325unsigned int 2894unsigned int
1326ev_recommended_backends (void) 2895ev_recommended_backends (void) EV_NOEXCEPT
1327{ 2896{
1328 unsigned int flags = ev_supported_backends (); 2897 unsigned int flags = ev_supported_backends ();
1329 2898
1330#ifndef __NetBSD__ 2899#ifndef __NetBSD__
1331 /* kqueue is borked on everything but netbsd apparently */ 2900 /* kqueue is borked on everything but netbsd apparently */
… …
1335#ifdef __APPLE__ 2904#ifdef __APPLE__
1336 /* only select works correctly on that "unix-certified" platform */ 2905 /* only select works correctly on that "unix-certified" platform */
1337 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2906 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1338 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 2907 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1339#endif 2908#endif
2909#ifdef __FreeBSD__
2910 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2911#endif
2912
2913 /* TODO: linuxaio is very experimental */
2914#if !EV_RECOMMEND_LINUXAIO
2915 flags &= ~EVBACKEND_LINUXAIO;
2916#endif
2917 /* TODO: linuxaio is super experimental */
2918#if !EV_RECOMMEND_IOURING
2919 flags &= ~EVBACKEND_IOURING;
2920#endif
1340 2921
1341 return flags; 2922 return flags;
1342} 2923}
1343 2924
2925ecb_cold
1344unsigned int 2926unsigned int
1345ev_embeddable_backends (void) 2927ev_embeddable_backends (void) EV_NOEXCEPT
1346{ 2928{
1347 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2929 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1348 2930
1349 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2931 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1350 /* please fix it and tell me how to detect the fix */ 2932 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1351 flags &= ~EVBACKEND_EPOLL; 2933 flags &= ~EVBACKEND_EPOLL;
2934
2935 /* EVBACKEND_LINUXAIO is theoretically embeddable, but suffers from a performance overhead */
2936
2937 /* EVBACKEND_IOURING is practically embeddable, but the current implementation is not
2938 * because our backend_fd is the epoll fd we need as fallback.
2939 * if the kernel ever is fixed, this might change...
2940 */
1352 2941
1353 return flags; 2942 return flags;
1354} 2943}
1355 2944
1356unsigned int 2945unsigned int
1357ev_backend (EV_P) 2946ev_backend (EV_P) EV_NOEXCEPT
1358{ 2947{
1359 return backend; 2948 return backend;
1360} 2949}
1361 2950
2951#if EV_FEATURE_API
1362unsigned int 2952unsigned int
1363ev_loop_count (EV_P) 2953ev_iteration (EV_P) EV_NOEXCEPT
1364{ 2954{
1365 return loop_count; 2955 return loop_count;
1366} 2956}
1367 2957
1368unsigned int 2958unsigned int
1369ev_loop_depth (EV_P) 2959ev_depth (EV_P) EV_NOEXCEPT
1370{ 2960{
1371 return loop_depth; 2961 return loop_depth;
1372} 2962}
1373 2963
1374void 2964void
1375ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2965ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1376{ 2966{
1377 io_blocktime = interval; 2967 io_blocktime = interval;
1378} 2968}
1379 2969
1380void 2970void
1381ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2971ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1382{ 2972{
1383 timeout_blocktime = interval; 2973 timeout_blocktime = interval;
1384} 2974}
1385 2975
2976void
2977ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
2978{
2979 userdata = data;
2980}
2981
2982void *
2983ev_userdata (EV_P) EV_NOEXCEPT
2984{
2985 return userdata;
2986}
2987
2988void
2989ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
2990{
2991 invoke_cb = invoke_pending_cb;
2992}
2993
2994void
2995ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
2996{
2997 release_cb = release;
2998 acquire_cb = acquire;
2999}
3000#endif
3001
1386/* initialise a loop structure, must be zero-initialised */ 3002/* initialise a loop structure, must be zero-initialised */
1387static void noinline 3003ecb_noinline ecb_cold
3004static void
1388loop_init (EV_P_ unsigned int flags) 3005loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
1389{ 3006{
1390 if (!backend) 3007 if (!backend)
1391 { 3008 {
3009 origflags = flags;
3010
1392#if EV_USE_REALTIME 3011#if EV_USE_REALTIME
1393 if (!have_realtime) 3012 if (!have_realtime)
1394 { 3013 {
1395 struct timespec ts; 3014 struct timespec ts;
1396 3015
… …
1407 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 3026 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1408 have_monotonic = 1; 3027 have_monotonic = 1;
1409 } 3028 }
1410#endif 3029#endif
1411 3030
1412 ev_rt_now = ev_time ();
1413 mn_now = get_clock ();
1414 now_floor = mn_now;
1415 rtmn_diff = ev_rt_now - mn_now;
1416 invoke_cb = ev_invoke_pending;
1417
1418 io_blocktime = 0.;
1419 timeout_blocktime = 0.;
1420 backend = 0;
1421 backend_fd = -1;
1422 gotasync = 0;
1423#if EV_USE_INOTIFY
1424 fs_fd = -2;
1425#endif
1426
1427 /* pid check not overridable via env */ 3031 /* pid check not overridable via env */
1428#ifndef _WIN32 3032#ifndef _WIN32
1429 if (flags & EVFLAG_FORKCHECK) 3033 if (flags & EVFLAG_FORKCHECK)
1430 curpid = getpid (); 3034 curpid = getpid ();
1431#endif 3035#endif
… …
1433 if (!(flags & EVFLAG_NOENV) 3037 if (!(flags & EVFLAG_NOENV)
1434 && !enable_secure () 3038 && !enable_secure ()
1435 && getenv ("LIBEV_FLAGS")) 3039 && getenv ("LIBEV_FLAGS"))
1436 flags = atoi (getenv ("LIBEV_FLAGS")); 3040 flags = atoi (getenv ("LIBEV_FLAGS"));
1437 3041
1438 if (!(flags & 0x0000ffffU)) 3042 ev_rt_now = ev_time ();
3043 mn_now = get_clock ();
3044 now_floor = mn_now;
3045 rtmn_diff = ev_rt_now - mn_now;
3046#if EV_FEATURE_API
3047 invoke_cb = ev_invoke_pending;
3048#endif
3049
3050 io_blocktime = 0.;
3051 timeout_blocktime = 0.;
3052 backend = 0;
3053 backend_fd = -1;
3054 sig_pending = 0;
3055#if EV_ASYNC_ENABLE
3056 async_pending = 0;
3057#endif
3058 pipe_write_skipped = 0;
3059 pipe_write_wanted = 0;
3060 evpipe [0] = -1;
3061 evpipe [1] = -1;
3062#if EV_USE_INOTIFY
3063 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
3064#endif
3065#if EV_USE_SIGNALFD
3066 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
3067#endif
3068
3069 if (!(flags & EVBACKEND_MASK))
1439 flags |= ev_recommended_backends (); 3070 flags |= ev_recommended_backends ();
1440 3071
3072#if EV_USE_IOCP
3073 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
3074#endif
1441#if EV_USE_PORT 3075#if EV_USE_PORT
1442 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 3076 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1443#endif 3077#endif
1444#if EV_USE_KQUEUE 3078#if EV_USE_KQUEUE
1445 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 3079 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
3080#endif
3081#if EV_USE_IOURING
3082 if (!backend && (flags & EVBACKEND_IOURING )) backend = iouring_init (EV_A_ flags);
3083#endif
3084#if EV_USE_LINUXAIO
3085 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
1446#endif 3086#endif
1447#if EV_USE_EPOLL 3087#if EV_USE_EPOLL
1448 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 3088 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
1449#endif 3089#endif
1450#if EV_USE_POLL 3090#if EV_USE_POLL
1451 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 3091 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
1452#endif 3092#endif
1453#if EV_USE_SELECT 3093#if EV_USE_SELECT
1454 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 3094 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
1455#endif 3095#endif
1456 3096
1457 ev_prepare_init (&pending_w, pendingcb); 3097 ev_prepare_init (&pending_w, pendingcb);
1458 3098
3099#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1459 ev_init (&pipe_w, pipecb); 3100 ev_init (&pipe_w, pipecb);
1460 ev_set_priority (&pipe_w, EV_MAXPRI); 3101 ev_set_priority (&pipe_w, EV_MAXPRI);
3102#endif
1461 } 3103 }
1462} 3104}
1463 3105
1464/* free up a loop structure */ 3106/* free up a loop structure */
1465static void noinline 3107ecb_cold
3108void
1466loop_destroy (EV_P) 3109ev_loop_destroy (EV_P)
1467{ 3110{
1468 int i; 3111 int i;
1469 3112
3113#if EV_MULTIPLICITY
3114 /* mimic free (0) */
3115 if (!EV_A)
3116 return;
3117#endif
3118
3119#if EV_CLEANUP_ENABLE
3120 /* queue cleanup watchers (and execute them) */
3121 if (ecb_expect_false (cleanupcnt))
3122 {
3123 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
3124 EV_INVOKE_PENDING;
3125 }
3126#endif
3127
3128#if EV_CHILD_ENABLE
3129 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
3130 {
3131 ev_ref (EV_A); /* child watcher */
3132 ev_signal_stop (EV_A_ &childev);
3133 }
3134#endif
3135
1470 if (ev_is_active (&pipe_w)) 3136 if (ev_is_active (&pipe_w))
1471 { 3137 {
1472 ev_ref (EV_A); /* signal watcher */ 3138 /*ev_ref (EV_A);*/
1473 ev_io_stop (EV_A_ &pipe_w); 3139 /*ev_io_stop (EV_A_ &pipe_w);*/
1474 3140
3141 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
3142 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
3143 }
3144
1475#if EV_USE_EVENTFD 3145#if EV_USE_SIGNALFD
1476 if (evfd >= 0) 3146 if (ev_is_active (&sigfd_w))
1477 close (evfd); 3147 close (sigfd);
1478#endif 3148#endif
1479
1480 if (evpipe [0] >= 0)
1481 {
1482 close (evpipe [0]);
1483 close (evpipe [1]);
1484 }
1485 }
1486 3149
1487#if EV_USE_INOTIFY 3150#if EV_USE_INOTIFY
1488 if (fs_fd >= 0) 3151 if (fs_fd >= 0)
1489 close (fs_fd); 3152 close (fs_fd);
1490#endif 3153#endif
1491 3154
1492 if (backend_fd >= 0) 3155 if (backend_fd >= 0)
1493 close (backend_fd); 3156 close (backend_fd);
1494 3157
3158#if EV_USE_IOCP
3159 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
3160#endif
1495#if EV_USE_PORT 3161#if EV_USE_PORT
1496 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3162 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1497#endif 3163#endif
1498#if EV_USE_KQUEUE 3164#if EV_USE_KQUEUE
1499 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3165 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
3166#endif
3167#if EV_USE_IOURING
3168 if (backend == EVBACKEND_IOURING ) iouring_destroy (EV_A);
3169#endif
3170#if EV_USE_LINUXAIO
3171 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
1500#endif 3172#endif
1501#if EV_USE_EPOLL 3173#if EV_USE_EPOLL
1502 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3174 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
1503#endif 3175#endif
1504#if EV_USE_POLL 3176#if EV_USE_POLL
1505 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3177 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
1506#endif 3178#endif
1507#if EV_USE_SELECT 3179#if EV_USE_SELECT
1508 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3180 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
1509#endif 3181#endif
1510 3182
1511 for (i = NUMPRI; i--; ) 3183 for (i = NUMPRI; i--; )
1512 { 3184 {
1513 array_free (pending, [i]); 3185 array_free (pending, [i]);
1514#if EV_IDLE_ENABLE 3186#if EV_IDLE_ENABLE
1515 array_free (idle, [i]); 3187 array_free (idle, [i]);
1516#endif 3188#endif
1517 } 3189 }
1518 3190
1519 ev_free (anfds); anfdmax = 0; 3191 ev_free (anfds); anfds = 0; anfdmax = 0;
1520 3192
1521 /* have to use the microsoft-never-gets-it-right macro */ 3193 /* have to use the microsoft-never-gets-it-right macro */
1522 array_free (rfeed, EMPTY); 3194 array_free (rfeed, EMPTY);
1523 array_free (fdchange, EMPTY); 3195 array_free (fdchange, EMPTY);
1524 array_free (timer, EMPTY); 3196 array_free (timer, EMPTY);
… …
1526 array_free (periodic, EMPTY); 3198 array_free (periodic, EMPTY);
1527#endif 3199#endif
1528#if EV_FORK_ENABLE 3200#if EV_FORK_ENABLE
1529 array_free (fork, EMPTY); 3201 array_free (fork, EMPTY);
1530#endif 3202#endif
3203#if EV_CLEANUP_ENABLE
3204 array_free (cleanup, EMPTY);
3205#endif
1531 array_free (prepare, EMPTY); 3206 array_free (prepare, EMPTY);
1532 array_free (check, EMPTY); 3207 array_free (check, EMPTY);
1533#if EV_ASYNC_ENABLE 3208#if EV_ASYNC_ENABLE
1534 array_free (async, EMPTY); 3209 array_free (async, EMPTY);
1535#endif 3210#endif
1536 3211
1537 backend = 0; 3212 backend = 0;
3213
3214#if EV_MULTIPLICITY
3215 if (ev_is_default_loop (EV_A))
3216#endif
3217 ev_default_loop_ptr = 0;
3218#if EV_MULTIPLICITY
3219 else
3220 ev_free (EV_A);
3221#endif
1538} 3222}
1539 3223
1540#if EV_USE_INOTIFY 3224#if EV_USE_INOTIFY
1541inline_size void infy_fork (EV_P); 3225inline_size void infy_fork (EV_P);
1542#endif 3226#endif
1543 3227
1544inline_size void 3228inline_size void
1545loop_fork (EV_P) 3229loop_fork (EV_P)
1546{ 3230{
1547#if EV_USE_PORT 3231#if EV_USE_PORT
1548 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3232 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1549#endif 3233#endif
1550#if EV_USE_KQUEUE 3234#if EV_USE_KQUEUE
1551 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 3235 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
3236#endif
3237#if EV_USE_IOURING
3238 if (backend == EVBACKEND_IOURING ) iouring_fork (EV_A);
3239#endif
3240#if EV_USE_LINUXAIO
3241 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
1552#endif 3242#endif
1553#if EV_USE_EPOLL 3243#if EV_USE_EPOLL
1554 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3244 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
1555#endif 3245#endif
1556#if EV_USE_INOTIFY 3246#if EV_USE_INOTIFY
1557 infy_fork (EV_A); 3247 infy_fork (EV_A);
1558#endif 3248#endif
1559 3249
3250#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1560 if (ev_is_active (&pipe_w)) 3251 if (ev_is_active (&pipe_w) && postfork != 2)
1561 { 3252 {
1562 /* this "locks" the handlers against writing to the pipe */ 3253 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1563 /* while we modify the fd vars */
1564 gotsig = 1;
1565#if EV_ASYNC_ENABLE
1566 gotasync = 1;
1567#endif
1568 3254
1569 ev_ref (EV_A); 3255 ev_ref (EV_A);
1570 ev_io_stop (EV_A_ &pipe_w); 3256 ev_io_stop (EV_A_ &pipe_w);
1571 3257
1572#if EV_USE_EVENTFD
1573 if (evfd >= 0)
1574 close (evfd);
1575#endif
1576
1577 if (evpipe [0] >= 0) 3258 if (evpipe [0] >= 0)
1578 { 3259 EV_WIN32_CLOSE_FD (evpipe [0]);
1579 close (evpipe [0]);
1580 close (evpipe [1]);
1581 }
1582 3260
1583 evpipe_init (EV_A); 3261 evpipe_init (EV_A);
1584 /* now iterate over everything, in case we missed something */ 3262 /* iterate over everything, in case we missed something before */
1585 pipecb (EV_A_ &pipe_w, EV_READ); 3263 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1586 } 3264 }
3265#endif
1587 3266
1588 postfork = 0; 3267 postfork = 0;
1589} 3268}
1590 3269
1591#if EV_MULTIPLICITY 3270#if EV_MULTIPLICITY
1592 3271
3272ecb_cold
1593struct ev_loop * 3273struct ev_loop *
1594ev_loop_new (unsigned int flags) 3274ev_loop_new (unsigned int flags) EV_NOEXCEPT
1595{ 3275{
1596 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3276 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1597 3277
1598 memset (loop, 0, sizeof (struct ev_loop)); 3278 memset (EV_A, 0, sizeof (struct ev_loop));
1599
1600 loop_init (EV_A_ flags); 3279 loop_init (EV_A_ flags);
1601 3280
1602 if (ev_backend (EV_A)) 3281 if (ev_backend (EV_A))
1603 return loop; 3282 return EV_A;
1604 3283
3284 ev_free (EV_A);
1605 return 0; 3285 return 0;
1606} 3286}
1607 3287
1608void 3288#endif /* multiplicity */
1609ev_loop_destroy (EV_P)
1610{
1611 loop_destroy (EV_A);
1612 ev_free (loop);
1613}
1614
1615void
1616ev_loop_fork (EV_P)
1617{
1618 postfork = 1; /* must be in line with ev_default_fork */
1619}
1620 3289
1621#if EV_VERIFY 3290#if EV_VERIFY
1622static void noinline 3291ecb_noinline ecb_cold
3292static void
1623verify_watcher (EV_P_ W w) 3293verify_watcher (EV_P_ W w)
1624{ 3294{
1625 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3295 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1626 3296
1627 if (w->pending) 3297 if (w->pending)
1628 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3298 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1629} 3299}
1630 3300
1631static void noinline 3301ecb_noinline ecb_cold
3302static void
1632verify_heap (EV_P_ ANHE *heap, int N) 3303verify_heap (EV_P_ ANHE *heap, int N)
1633{ 3304{
1634 int i; 3305 int i;
1635 3306
1636 for (i = HEAP0; i < N + HEAP0; ++i) 3307 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1641 3312
1642 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3313 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1643 } 3314 }
1644} 3315}
1645 3316
1646static void noinline 3317ecb_noinline ecb_cold
3318static void
1647array_verify (EV_P_ W *ws, int cnt) 3319array_verify (EV_P_ W *ws, int cnt)
1648{ 3320{
1649 while (cnt--) 3321 while (cnt--)
1650 { 3322 {
1651 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3323 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1652 verify_watcher (EV_A_ ws [cnt]); 3324 verify_watcher (EV_A_ ws [cnt]);
1653 } 3325 }
1654} 3326}
1655#endif 3327#endif
1656 3328
1657void 3329#if EV_FEATURE_API
1658ev_loop_verify (EV_P) 3330void ecb_cold
3331ev_verify (EV_P) EV_NOEXCEPT
1659{ 3332{
1660#if EV_VERIFY 3333#if EV_VERIFY
1661 int i; 3334 int i;
1662 WL w; 3335 WL w, w2;
1663 3336
1664 assert (activecnt >= -1); 3337 assert (activecnt >= -1);
1665 3338
1666 assert (fdchangemax >= fdchangecnt); 3339 assert (fdchangemax >= fdchangecnt);
1667 for (i = 0; i < fdchangecnt; ++i) 3340 for (i = 0; i < fdchangecnt; ++i)
1668 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3341 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1669 3342
1670 assert (anfdmax >= 0); 3343 assert (anfdmax >= 0);
1671 for (i = 0; i < anfdmax; ++i) 3344 for (i = 0; i < anfdmax; ++i)
3345 {
3346 int j = 0;
3347
1672 for (w = anfds [i].head; w; w = w->next) 3348 for (w = w2 = anfds [i].head; w; w = w->next)
1673 { 3349 {
1674 verify_watcher (EV_A_ (W)w); 3350 verify_watcher (EV_A_ (W)w);
3351
3352 if (j++ & 1)
3353 {
3354 assert (("libev: io watcher list contains a loop", w != w2));
3355 w2 = w2->next;
3356 }
3357
1675 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3358 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1676 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 3359 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1677 } 3360 }
3361 }
1678 3362
1679 assert (timermax >= timercnt); 3363 assert (timermax >= timercnt);
1680 verify_heap (EV_A_ timers, timercnt); 3364 verify_heap (EV_A_ timers, timercnt);
1681 3365
1682#if EV_PERIODIC_ENABLE 3366#if EV_PERIODIC_ENABLE
… …
1697#if EV_FORK_ENABLE 3381#if EV_FORK_ENABLE
1698 assert (forkmax >= forkcnt); 3382 assert (forkmax >= forkcnt);
1699 array_verify (EV_A_ (W *)forks, forkcnt); 3383 array_verify (EV_A_ (W *)forks, forkcnt);
1700#endif 3384#endif
1701 3385
3386#if EV_CLEANUP_ENABLE
3387 assert (cleanupmax >= cleanupcnt);
3388 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
3389#endif
3390
1702#if EV_ASYNC_ENABLE 3391#if EV_ASYNC_ENABLE
1703 assert (asyncmax >= asynccnt); 3392 assert (asyncmax >= asynccnt);
1704 array_verify (EV_A_ (W *)asyncs, asynccnt); 3393 array_verify (EV_A_ (W *)asyncs, asynccnt);
1705#endif 3394#endif
1706 3395
3396#if EV_PREPARE_ENABLE
1707 assert (preparemax >= preparecnt); 3397 assert (preparemax >= preparecnt);
1708 array_verify (EV_A_ (W *)prepares, preparecnt); 3398 array_verify (EV_A_ (W *)prepares, preparecnt);
3399#endif
1709 3400
3401#if EV_CHECK_ENABLE
1710 assert (checkmax >= checkcnt); 3402 assert (checkmax >= checkcnt);
1711 array_verify (EV_A_ (W *)checks, checkcnt); 3403 array_verify (EV_A_ (W *)checks, checkcnt);
3404#endif
1712 3405
1713# if 0 3406# if 0
3407#if EV_CHILD_ENABLE
1714 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 3408 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1715 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 3409 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
3410#endif
1716# endif 3411# endif
1717#endif 3412#endif
1718} 3413}
1719 3414#endif
1720#endif /* multiplicity */
1721 3415
1722#if EV_MULTIPLICITY 3416#if EV_MULTIPLICITY
3417ecb_cold
1723struct ev_loop * 3418struct ev_loop *
1724ev_default_loop_init (unsigned int flags)
1725#else 3419#else
1726int 3420int
3421#endif
1727ev_default_loop (unsigned int flags) 3422ev_default_loop (unsigned int flags) EV_NOEXCEPT
1728#endif
1729{ 3423{
1730 if (!ev_default_loop_ptr) 3424 if (!ev_default_loop_ptr)
1731 { 3425 {
1732#if EV_MULTIPLICITY 3426#if EV_MULTIPLICITY
1733 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 3427 EV_P = ev_default_loop_ptr = &default_loop_struct;
1734#else 3428#else
1735 ev_default_loop_ptr = 1; 3429 ev_default_loop_ptr = 1;
1736#endif 3430#endif
1737 3431
1738 loop_init (EV_A_ flags); 3432 loop_init (EV_A_ flags);
1739 3433
1740 if (ev_backend (EV_A)) 3434 if (ev_backend (EV_A))
1741 { 3435 {
1742#ifndef _WIN32 3436#if EV_CHILD_ENABLE
1743 ev_signal_init (&childev, childcb, SIGCHLD); 3437 ev_signal_init (&childev, childcb, SIGCHLD);
1744 ev_set_priority (&childev, EV_MAXPRI); 3438 ev_set_priority (&childev, EV_MAXPRI);
1745 ev_signal_start (EV_A_ &childev); 3439 ev_signal_start (EV_A_ &childev);
1746 ev_unref (EV_A); /* child watcher should not keep loop alive */ 3440 ev_unref (EV_A); /* child watcher should not keep loop alive */
1747#endif 3441#endif
… …
1752 3446
1753 return ev_default_loop_ptr; 3447 return ev_default_loop_ptr;
1754} 3448}
1755 3449
1756void 3450void
1757ev_default_destroy (void) 3451ev_loop_fork (EV_P) EV_NOEXCEPT
1758{ 3452{
1759#if EV_MULTIPLICITY 3453 postfork = 1;
1760 struct ev_loop *loop = ev_default_loop_ptr;
1761#endif
1762
1763 ev_default_loop_ptr = 0;
1764
1765#ifndef _WIN32
1766 ev_ref (EV_A); /* child watcher */
1767 ev_signal_stop (EV_A_ &childev);
1768#endif
1769
1770 loop_destroy (EV_A);
1771}
1772
1773void
1774ev_default_fork (void)
1775{
1776#if EV_MULTIPLICITY
1777 struct ev_loop *loop = ev_default_loop_ptr;
1778#endif
1779
1780 postfork = 1; /* must be in line with ev_loop_fork */
1781} 3454}
1782 3455
1783/*****************************************************************************/ 3456/*****************************************************************************/
1784 3457
1785void 3458void
1786ev_invoke (EV_P_ void *w, int revents) 3459ev_invoke (EV_P_ void *w, int revents)
1787{ 3460{
1788 EV_CB_INVOKE ((W)w, revents); 3461 EV_CB_INVOKE ((W)w, revents);
1789} 3462}
1790 3463
3464unsigned int
3465ev_pending_count (EV_P) EV_NOEXCEPT
3466{
3467 int pri;
3468 unsigned int count = 0;
3469
3470 for (pri = NUMPRI; pri--; )
3471 count += pendingcnt [pri];
3472
3473 return count;
3474}
3475
3476ecb_noinline
1791void 3477void
1792ev_invoke_pending (EV_P) 3478ev_invoke_pending (EV_P)
1793{ 3479{
1794 int pri; 3480 pendingpri = NUMPRI;
1795 3481
1796 for (pri = NUMPRI; pri--; ) 3482 do
3483 {
3484 --pendingpri;
3485
3486 /* pendingpri possibly gets modified in the inner loop */
1797 while (pendingcnt [pri]) 3487 while (pendingcnt [pendingpri])
1798 { 3488 {
1799 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3489 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
1800 3490
1801 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1802 /* ^ this is no longer true, as pending_w could be here */
1803
1804 p->w->pending = 0; 3491 p->w->pending = 0;
1805 EV_CB_INVOKE (p->w, p->events); 3492 EV_CB_INVOKE (p->w, p->events);
1806 EV_FREQUENT_CHECK; 3493 EV_FREQUENT_CHECK;
1807 } 3494 }
3495 }
3496 while (pendingpri);
1808} 3497}
1809 3498
1810#if EV_IDLE_ENABLE 3499#if EV_IDLE_ENABLE
1811/* make idle watchers pending. this handles the "call-idle */ 3500/* make idle watchers pending. this handles the "call-idle */
1812/* only when higher priorities are idle" logic */ 3501/* only when higher priorities are idle" logic */
1813inline_size void 3502inline_size void
1814idle_reify (EV_P) 3503idle_reify (EV_P)
1815{ 3504{
1816 if (expect_false (idleall)) 3505 if (ecb_expect_false (idleall))
1817 { 3506 {
1818 int pri; 3507 int pri;
1819 3508
1820 for (pri = NUMPRI; pri--; ) 3509 for (pri = NUMPRI; pri--; )
1821 { 3510 {
… …
1864 EV_FREQUENT_CHECK; 3553 EV_FREQUENT_CHECK;
1865 feed_reverse (EV_A_ (W)w); 3554 feed_reverse (EV_A_ (W)w);
1866 } 3555 }
1867 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 3556 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1868 3557
1869 feed_reverse_done (EV_A_ EV_TIMEOUT); 3558 feed_reverse_done (EV_A_ EV_TIMER);
1870 } 3559 }
1871} 3560}
1872 3561
1873#if EV_PERIODIC_ENABLE 3562#if EV_PERIODIC_ENABLE
3563
3564ecb_noinline
3565static void
3566periodic_recalc (EV_P_ ev_periodic *w)
3567{
3568 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3569 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3570
3571 /* the above almost always errs on the low side */
3572 while (at <= ev_rt_now)
3573 {
3574 ev_tstamp nat = at + w->interval;
3575
3576 /* when resolution fails us, we use ev_rt_now */
3577 if (ecb_expect_false (nat == at))
3578 {
3579 at = ev_rt_now;
3580 break;
3581 }
3582
3583 at = nat;
3584 }
3585
3586 ev_at (w) = at;
3587}
3588
1874/* make periodics pending */ 3589/* make periodics pending */
1875inline_size void 3590inline_size void
1876periodics_reify (EV_P) 3591periodics_reify (EV_P)
1877{ 3592{
1878 EV_FREQUENT_CHECK; 3593 EV_FREQUENT_CHECK;
1879 3594
1880 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3595 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1881 { 3596 {
1882 int feed_count = 0;
1883
1884 do 3597 do
1885 { 3598 {
1886 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3599 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
1887 3600
1888 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3601 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
1897 ANHE_at_cache (periodics [HEAP0]); 3610 ANHE_at_cache (periodics [HEAP0]);
1898 downheap (periodics, periodiccnt, HEAP0); 3611 downheap (periodics, periodiccnt, HEAP0);
1899 } 3612 }
1900 else if (w->interval) 3613 else if (w->interval)
1901 { 3614 {
1902 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3615 periodic_recalc (EV_A_ w);
1903 /* if next trigger time is not sufficiently in the future, put it there */
1904 /* this might happen because of floating point inexactness */
1905 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1906 {
1907 ev_at (w) += w->interval;
1908
1909 /* if interval is unreasonably low we might still have a time in the past */
1910 /* so correct this. this will make the periodic very inexact, but the user */
1911 /* has effectively asked to get triggered more often than possible */
1912 if (ev_at (w) < ev_rt_now)
1913 ev_at (w) = ev_rt_now;
1914 }
1915
1916 ANHE_at_cache (periodics [HEAP0]); 3616 ANHE_at_cache (periodics [HEAP0]);
1917 downheap (periodics, periodiccnt, HEAP0); 3617 downheap (periodics, periodiccnt, HEAP0);
1918 } 3618 }
1919 else 3619 else
1920 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3620 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
1927 feed_reverse_done (EV_A_ EV_PERIODIC); 3627 feed_reverse_done (EV_A_ EV_PERIODIC);
1928 } 3628 }
1929} 3629}
1930 3630
1931/* simply recalculate all periodics */ 3631/* simply recalculate all periodics */
1932/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 3632/* TODO: maybe ensure that at least one event happens when jumping forward? */
1933static void noinline 3633ecb_noinline ecb_cold
3634static void
1934periodics_reschedule (EV_P) 3635periodics_reschedule (EV_P)
1935{ 3636{
1936 int i; 3637 int i;
1937 3638
1938 /* adjust periodics after time jump */ 3639 /* adjust periodics after time jump */
… …
1941 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3642 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1942 3643
1943 if (w->reschedule_cb) 3644 if (w->reschedule_cb)
1944 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3645 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1945 else if (w->interval) 3646 else if (w->interval)
1946 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3647 periodic_recalc (EV_A_ w);
1947 3648
1948 ANHE_at_cache (periodics [i]); 3649 ANHE_at_cache (periodics [i]);
1949 } 3650 }
1950 3651
1951 reheap (periodics, periodiccnt); 3652 reheap (periodics, periodiccnt);
1952} 3653}
1953#endif 3654#endif
1954 3655
1955/* adjust all timers by a given offset */ 3656/* adjust all timers by a given offset */
1956static void noinline 3657ecb_noinline ecb_cold
3658static void
1957timers_reschedule (EV_P_ ev_tstamp adjust) 3659timers_reschedule (EV_P_ ev_tstamp adjust)
1958{ 3660{
1959 int i; 3661 int i;
1960 3662
1961 for (i = 0; i < timercnt; ++i) 3663 for (i = 0; i < timercnt; ++i)
… …
1965 ANHE_at_cache (*he); 3667 ANHE_at_cache (*he);
1966 } 3668 }
1967} 3669}
1968 3670
1969/* fetch new monotonic and realtime times from the kernel */ 3671/* fetch new monotonic and realtime times from the kernel */
1970/* also detetc if there was a timejump, and act accordingly */ 3672/* also detect if there was a timejump, and act accordingly */
1971inline_speed void 3673inline_speed void
1972time_update (EV_P_ ev_tstamp max_block) 3674time_update (EV_P_ ev_tstamp max_block)
1973{ 3675{
1974#if EV_USE_MONOTONIC 3676#if EV_USE_MONOTONIC
1975 if (expect_true (have_monotonic)) 3677 if (ecb_expect_true (have_monotonic))
1976 { 3678 {
1977 int i; 3679 int i;
1978 ev_tstamp odiff = rtmn_diff; 3680 ev_tstamp odiff = rtmn_diff;
1979 3681
1980 mn_now = get_clock (); 3682 mn_now = get_clock ();
1981 3683
1982 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3684 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
1983 /* interpolate in the meantime */ 3685 /* interpolate in the meantime */
1984 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 3686 if (ecb_expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1985 { 3687 {
1986 ev_rt_now = rtmn_diff + mn_now; 3688 ev_rt_now = rtmn_diff + mn_now;
1987 return; 3689 return;
1988 } 3690 }
1989 3691
… …
1998 * doesn't hurt either as we only do this on time-jumps or 3700 * doesn't hurt either as we only do this on time-jumps or
1999 * in the unlikely event of having been preempted here. 3701 * in the unlikely event of having been preempted here.
2000 */ 3702 */
2001 for (i = 4; --i; ) 3703 for (i = 4; --i; )
2002 { 3704 {
3705 ev_tstamp diff;
2003 rtmn_diff = ev_rt_now - mn_now; 3706 rtmn_diff = ev_rt_now - mn_now;
2004 3707
3708 diff = odiff - rtmn_diff;
3709
2005 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3710 if (ecb_expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2006 return; /* all is well */ 3711 return; /* all is well */
2007 3712
2008 ev_rt_now = ev_time (); 3713 ev_rt_now = ev_time ();
2009 mn_now = get_clock (); 3714 mn_now = get_clock ();
2010 now_floor = mn_now; 3715 now_floor = mn_now;
… …
2019 else 3724 else
2020#endif 3725#endif
2021 { 3726 {
2022 ev_rt_now = ev_time (); 3727 ev_rt_now = ev_time ();
2023 3728
2024 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 3729 if (ecb_expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
2025 { 3730 {
2026 /* adjust timers. this is easy, as the offset is the same for all of them */ 3731 /* adjust timers. this is easy, as the offset is the same for all of them */
2027 timers_reschedule (EV_A_ ev_rt_now - mn_now); 3732 timers_reschedule (EV_A_ ev_rt_now - mn_now);
2028#if EV_PERIODIC_ENABLE 3733#if EV_PERIODIC_ENABLE
2029 periodics_reschedule (EV_A); 3734 periodics_reschedule (EV_A);
… …
2032 3737
2033 mn_now = ev_rt_now; 3738 mn_now = ev_rt_now;
2034 } 3739 }
2035} 3740}
2036 3741
2037void 3742int
2038ev_loop (EV_P_ int flags) 3743ev_run (EV_P_ int flags)
2039{ 3744{
3745#if EV_FEATURE_API
2040 ++loop_depth; 3746 ++loop_depth;
3747#endif
2041 3748
3749 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
3750
2042 loop_done = EVUNLOOP_CANCEL; 3751 loop_done = EVBREAK_CANCEL;
2043 3752
2044 invoke_cb (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 3753 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2045 3754
2046 do 3755 do
2047 { 3756 {
2048#if EV_VERIFY >= 2 3757#if EV_VERIFY >= 2
2049 ev_loop_verify (EV_A); 3758 ev_verify (EV_A);
2050#endif 3759#endif
2051 3760
2052#ifndef _WIN32 3761#ifndef _WIN32
2053 if (expect_false (curpid)) /* penalise the forking check even more */ 3762 if (ecb_expect_false (curpid)) /* penalise the forking check even more */
2054 if (expect_false (getpid () != curpid)) 3763 if (ecb_expect_false (getpid () != curpid))
2055 { 3764 {
2056 curpid = getpid (); 3765 curpid = getpid ();
2057 postfork = 1; 3766 postfork = 1;
2058 } 3767 }
2059#endif 3768#endif
2060 3769
2061#if EV_FORK_ENABLE 3770#if EV_FORK_ENABLE
2062 /* we might have forked, so queue fork handlers */ 3771 /* we might have forked, so queue fork handlers */
2063 if (expect_false (postfork)) 3772 if (ecb_expect_false (postfork))
2064 if (forkcnt) 3773 if (forkcnt)
2065 { 3774 {
2066 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3775 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2067 invoke_cb (EV_A); 3776 EV_INVOKE_PENDING;
2068 } 3777 }
2069#endif 3778#endif
2070 3779
3780#if EV_PREPARE_ENABLE
2071 /* queue prepare watchers (and execute them) */ 3781 /* queue prepare watchers (and execute them) */
2072 if (expect_false (preparecnt)) 3782 if (ecb_expect_false (preparecnt))
2073 { 3783 {
2074 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3784 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2075 invoke_cb (EV_A); 3785 EV_INVOKE_PENDING;
2076 } 3786 }
3787#endif
3788
3789 if (ecb_expect_false (loop_done))
3790 break;
2077 3791
2078 /* we might have forked, so reify kernel state if necessary */ 3792 /* we might have forked, so reify kernel state if necessary */
2079 if (expect_false (postfork)) 3793 if (ecb_expect_false (postfork))
2080 loop_fork (EV_A); 3794 loop_fork (EV_A);
2081 3795
2082 /* update fd-related kernel structures */ 3796 /* update fd-related kernel structures */
2083 fd_reify (EV_A); 3797 fd_reify (EV_A);
2084 3798
2085 /* calculate blocking time */ 3799 /* calculate blocking time */
2086 { 3800 {
2087 ev_tstamp waittime = 0.; 3801 ev_tstamp waittime = 0.;
2088 ev_tstamp sleeptime = 0.; 3802 ev_tstamp sleeptime = 0.;
2089 3803
3804 /* remember old timestamp for io_blocktime calculation */
3805 ev_tstamp prev_mn_now = mn_now;
3806
3807 /* update time to cancel out callback processing overhead */
3808 time_update (EV_A_ 1e100);
3809
3810 /* from now on, we want a pipe-wake-up */
3811 pipe_write_wanted = 1;
3812
3813 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3814
2090 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3815 if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2091 { 3816 {
2092 /* remember old timestamp for io_blocktime calculation */
2093 ev_tstamp prev_mn_now = mn_now;
2094
2095 /* update time to cancel out callback processing overhead */
2096 time_update (EV_A_ 1e100);
2097
2098 waittime = MAX_BLOCKTIME; 3817 waittime = MAX_BLOCKTIME;
2099 3818
2100 if (timercnt) 3819 if (timercnt)
2101 { 3820 {
2102 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3821 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2103 if (waittime > to) waittime = to; 3822 if (waittime > to) waittime = to;
2104 } 3823 }
2105 3824
2106#if EV_PERIODIC_ENABLE 3825#if EV_PERIODIC_ENABLE
2107 if (periodiccnt) 3826 if (periodiccnt)
2108 { 3827 {
2109 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3828 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2110 if (waittime > to) waittime = to; 3829 if (waittime > to) waittime = to;
2111 } 3830 }
2112#endif 3831#endif
2113 3832
2114 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3833 /* don't let timeouts decrease the waittime below timeout_blocktime */
2115 if (expect_false (waittime < timeout_blocktime)) 3834 if (ecb_expect_false (waittime < timeout_blocktime))
2116 waittime = timeout_blocktime; 3835 waittime = timeout_blocktime;
2117 3836
3837 /* at this point, we NEED to wait, so we have to ensure */
3838 /* to pass a minimum nonzero value to the backend */
3839 if (ecb_expect_false (waittime < backend_mintime))
3840 waittime = backend_mintime;
3841
2118 /* extra check because io_blocktime is commonly 0 */ 3842 /* extra check because io_blocktime is commonly 0 */
2119 if (expect_false (io_blocktime)) 3843 if (ecb_expect_false (io_blocktime))
2120 { 3844 {
2121 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3845 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2122 3846
2123 if (sleeptime > waittime - backend_fudge) 3847 if (sleeptime > waittime - backend_mintime)
2124 sleeptime = waittime - backend_fudge; 3848 sleeptime = waittime - backend_mintime;
2125 3849
2126 if (expect_true (sleeptime > 0.)) 3850 if (ecb_expect_true (sleeptime > 0.))
2127 { 3851 {
2128 ev_sleep (sleeptime); 3852 ev_sleep (sleeptime);
2129 waittime -= sleeptime; 3853 waittime -= sleeptime;
2130 } 3854 }
2131 } 3855 }
2132 } 3856 }
2133 3857
3858#if EV_FEATURE_API
2134 ++loop_count; 3859 ++loop_count;
3860#endif
3861 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2135 backend_poll (EV_A_ waittime); 3862 backend_poll (EV_A_ waittime);
3863 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3864
3865 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3866
3867 ECB_MEMORY_FENCE_ACQUIRE;
3868 if (pipe_write_skipped)
3869 {
3870 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3871 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3872 }
2136 3873
2137 /* update ev_rt_now, do magic */ 3874 /* update ev_rt_now, do magic */
2138 time_update (EV_A_ waittime + sleeptime); 3875 time_update (EV_A_ waittime + sleeptime);
2139 } 3876 }
2140 3877
… …
2147#if EV_IDLE_ENABLE 3884#if EV_IDLE_ENABLE
2148 /* queue idle watchers unless other events are pending */ 3885 /* queue idle watchers unless other events are pending */
2149 idle_reify (EV_A); 3886 idle_reify (EV_A);
2150#endif 3887#endif
2151 3888
3889#if EV_CHECK_ENABLE
2152 /* queue check watchers, to be executed first */ 3890 /* queue check watchers, to be executed first */
2153 if (expect_false (checkcnt)) 3891 if (ecb_expect_false (checkcnt))
2154 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3892 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3893#endif
2155 3894
2156 invoke_cb (EV_A); 3895 EV_INVOKE_PENDING;
2157 } 3896 }
2158 while (expect_true ( 3897 while (ecb_expect_true (
2159 activecnt 3898 activecnt
2160 && !loop_done 3899 && !loop_done
2161 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3900 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2162 )); 3901 ));
2163 3902
2164 if (loop_done == EVUNLOOP_ONE) 3903 if (loop_done == EVBREAK_ONE)
2165 loop_done = EVUNLOOP_CANCEL; 3904 loop_done = EVBREAK_CANCEL;
2166 3905
3906#if EV_FEATURE_API
2167 --loop_depth; 3907 --loop_depth;
2168} 3908#endif
2169 3909
3910 return activecnt;
3911}
3912
2170void 3913void
2171ev_unloop (EV_P_ int how) 3914ev_break (EV_P_ int how) EV_NOEXCEPT
2172{ 3915{
2173 loop_done = how; 3916 loop_done = how;
2174} 3917}
2175 3918
2176void 3919void
2177ev_ref (EV_P) 3920ev_ref (EV_P) EV_NOEXCEPT
2178{ 3921{
2179 ++activecnt; 3922 ++activecnt;
2180} 3923}
2181 3924
2182void 3925void
2183ev_unref (EV_P) 3926ev_unref (EV_P) EV_NOEXCEPT
2184{ 3927{
2185 --activecnt; 3928 --activecnt;
2186} 3929}
2187 3930
2188void 3931void
2189ev_now_update (EV_P) 3932ev_now_update (EV_P) EV_NOEXCEPT
2190{ 3933{
2191 time_update (EV_A_ 1e100); 3934 time_update (EV_A_ 1e100);
2192} 3935}
2193 3936
2194void 3937void
2195ev_suspend (EV_P) 3938ev_suspend (EV_P) EV_NOEXCEPT
2196{ 3939{
2197 ev_now_update (EV_A); 3940 ev_now_update (EV_A);
2198} 3941}
2199 3942
2200void 3943void
2201ev_resume (EV_P) 3944ev_resume (EV_P) EV_NOEXCEPT
2202{ 3945{
2203 ev_tstamp mn_prev = mn_now; 3946 ev_tstamp mn_prev = mn_now;
2204 3947
2205 ev_now_update (EV_A); 3948 ev_now_update (EV_A);
2206 timers_reschedule (EV_A_ mn_now - mn_prev); 3949 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2223inline_size void 3966inline_size void
2224wlist_del (WL *head, WL elem) 3967wlist_del (WL *head, WL elem)
2225{ 3968{
2226 while (*head) 3969 while (*head)
2227 { 3970 {
2228 if (*head == elem) 3971 if (ecb_expect_true (*head == elem))
2229 { 3972 {
2230 *head = elem->next; 3973 *head = elem->next;
2231 return; 3974 break;
2232 } 3975 }
2233 3976
2234 head = &(*head)->next; 3977 head = &(*head)->next;
2235 } 3978 }
2236} 3979}
… …
2245 w->pending = 0; 3988 w->pending = 0;
2246 } 3989 }
2247} 3990}
2248 3991
2249int 3992int
2250ev_clear_pending (EV_P_ void *w) 3993ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
2251{ 3994{
2252 W w_ = (W)w; 3995 W w_ = (W)w;
2253 int pending = w_->pending; 3996 int pending = w_->pending;
2254 3997
2255 if (expect_true (pending)) 3998 if (ecb_expect_true (pending))
2256 { 3999 {
2257 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 4000 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2258 p->w = (W)&pending_w; 4001 p->w = (W)&pending_w;
2259 w_->pending = 0; 4002 w_->pending = 0;
2260 return p->events; 4003 return p->events;
… …
2287 w->active = 0; 4030 w->active = 0;
2288} 4031}
2289 4032
2290/*****************************************************************************/ 4033/*****************************************************************************/
2291 4034
2292void noinline 4035ecb_noinline
4036void
2293ev_io_start (EV_P_ ev_io *w) 4037ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
2294{ 4038{
2295 int fd = w->fd; 4039 int fd = w->fd;
2296 4040
2297 if (expect_false (ev_is_active (w))) 4041 if (ecb_expect_false (ev_is_active (w)))
2298 return; 4042 return;
2299 4043
2300 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 4044 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2301 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 4045 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2302 4046
4047#if EV_VERIFY >= 2
4048 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
4049#endif
2303 EV_FREQUENT_CHECK; 4050 EV_FREQUENT_CHECK;
2304 4051
2305 ev_start (EV_A_ (W)w, 1); 4052 ev_start (EV_A_ (W)w, 1);
2306 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 4053 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
2307 wlist_add (&anfds[fd].head, (WL)w); 4054 wlist_add (&anfds[fd].head, (WL)w);
2308 4055
4056 /* common bug, apparently */
4057 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
4058
2309 fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1); 4059 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2310 w->events &= ~EV__IOFDSET; 4060 w->events &= ~EV__IOFDSET;
2311 4061
2312 EV_FREQUENT_CHECK; 4062 EV_FREQUENT_CHECK;
2313} 4063}
2314 4064
2315void noinline 4065ecb_noinline
4066void
2316ev_io_stop (EV_P_ ev_io *w) 4067ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
2317{ 4068{
2318 clear_pending (EV_A_ (W)w); 4069 clear_pending (EV_A_ (W)w);
2319 if (expect_false (!ev_is_active (w))) 4070 if (ecb_expect_false (!ev_is_active (w)))
2320 return; 4071 return;
2321 4072
2322 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 4073 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2323 4074
4075#if EV_VERIFY >= 2
4076 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
4077#endif
2324 EV_FREQUENT_CHECK; 4078 EV_FREQUENT_CHECK;
2325 4079
2326 wlist_del (&anfds[w->fd].head, (WL)w); 4080 wlist_del (&anfds[w->fd].head, (WL)w);
2327 ev_stop (EV_A_ (W)w); 4081 ev_stop (EV_A_ (W)w);
2328 4082
2329 fd_change (EV_A_ w->fd, 1); 4083 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2330 4084
2331 EV_FREQUENT_CHECK; 4085 EV_FREQUENT_CHECK;
2332} 4086}
2333 4087
2334void noinline 4088ecb_noinline
4089void
2335ev_timer_start (EV_P_ ev_timer *w) 4090ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
2336{ 4091{
2337 if (expect_false (ev_is_active (w))) 4092 if (ecb_expect_false (ev_is_active (w)))
2338 return; 4093 return;
2339 4094
2340 ev_at (w) += mn_now; 4095 ev_at (w) += mn_now;
2341 4096
2342 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 4097 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2343 4098
2344 EV_FREQUENT_CHECK; 4099 EV_FREQUENT_CHECK;
2345 4100
2346 ++timercnt; 4101 ++timercnt;
2347 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 4102 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
2348 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 4103 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
2349 ANHE_w (timers [ev_active (w)]) = (WT)w; 4104 ANHE_w (timers [ev_active (w)]) = (WT)w;
2350 ANHE_at_cache (timers [ev_active (w)]); 4105 ANHE_at_cache (timers [ev_active (w)]);
2351 upheap (timers, ev_active (w)); 4106 upheap (timers, ev_active (w));
2352 4107
2353 EV_FREQUENT_CHECK; 4108 EV_FREQUENT_CHECK;
2354 4109
2355 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 4110 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2356} 4111}
2357 4112
2358void noinline 4113ecb_noinline
4114void
2359ev_timer_stop (EV_P_ ev_timer *w) 4115ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
2360{ 4116{
2361 clear_pending (EV_A_ (W)w); 4117 clear_pending (EV_A_ (W)w);
2362 if (expect_false (!ev_is_active (w))) 4118 if (ecb_expect_false (!ev_is_active (w)))
2363 return; 4119 return;
2364 4120
2365 EV_FREQUENT_CHECK; 4121 EV_FREQUENT_CHECK;
2366 4122
2367 { 4123 {
… …
2369 4125
2370 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 4126 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2371 4127
2372 --timercnt; 4128 --timercnt;
2373 4129
2374 if (expect_true (active < timercnt + HEAP0)) 4130 if (ecb_expect_true (active < timercnt + HEAP0))
2375 { 4131 {
2376 timers [active] = timers [timercnt + HEAP0]; 4132 timers [active] = timers [timercnt + HEAP0];
2377 adjustheap (timers, timercnt, active); 4133 adjustheap (timers, timercnt, active);
2378 } 4134 }
2379 } 4135 }
2380 4136
2381 EV_FREQUENT_CHECK;
2382
2383 ev_at (w) -= mn_now; 4137 ev_at (w) -= mn_now;
2384 4138
2385 ev_stop (EV_A_ (W)w); 4139 ev_stop (EV_A_ (W)w);
2386}
2387 4140
2388void noinline 4141 EV_FREQUENT_CHECK;
4142}
4143
4144ecb_noinline
4145void
2389ev_timer_again (EV_P_ ev_timer *w) 4146ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
2390{ 4147{
2391 EV_FREQUENT_CHECK; 4148 EV_FREQUENT_CHECK;
4149
4150 clear_pending (EV_A_ (W)w);
2392 4151
2393 if (ev_is_active (w)) 4152 if (ev_is_active (w))
2394 { 4153 {
2395 if (w->repeat) 4154 if (w->repeat)
2396 { 4155 {
… …
2408 } 4167 }
2409 4168
2410 EV_FREQUENT_CHECK; 4169 EV_FREQUENT_CHECK;
2411} 4170}
2412 4171
4172ev_tstamp
4173ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
4174{
4175 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
4176}
4177
2413#if EV_PERIODIC_ENABLE 4178#if EV_PERIODIC_ENABLE
2414void noinline 4179ecb_noinline
4180void
2415ev_periodic_start (EV_P_ ev_periodic *w) 4181ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
2416{ 4182{
2417 if (expect_false (ev_is_active (w))) 4183 if (ecb_expect_false (ev_is_active (w)))
2418 return; 4184 return;
2419 4185
2420 if (w->reschedule_cb) 4186 if (w->reschedule_cb)
2421 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4187 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2422 else if (w->interval) 4188 else if (w->interval)
2423 { 4189 {
2424 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 4190 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2425 /* this formula differs from the one in periodic_reify because we do not always round up */ 4191 periodic_recalc (EV_A_ w);
2426 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2427 } 4192 }
2428 else 4193 else
2429 ev_at (w) = w->offset; 4194 ev_at (w) = w->offset;
2430 4195
2431 EV_FREQUENT_CHECK; 4196 EV_FREQUENT_CHECK;
2432 4197
2433 ++periodiccnt; 4198 ++periodiccnt;
2434 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4199 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2435 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4200 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
2436 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4201 ANHE_w (periodics [ev_active (w)]) = (WT)w;
2437 ANHE_at_cache (periodics [ev_active (w)]); 4202 ANHE_at_cache (periodics [ev_active (w)]);
2438 upheap (periodics, ev_active (w)); 4203 upheap (periodics, ev_active (w));
2439 4204
2440 EV_FREQUENT_CHECK; 4205 EV_FREQUENT_CHECK;
2441 4206
2442 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4207 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2443} 4208}
2444 4209
2445void noinline 4210ecb_noinline
4211void
2446ev_periodic_stop (EV_P_ ev_periodic *w) 4212ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
2447{ 4213{
2448 clear_pending (EV_A_ (W)w); 4214 clear_pending (EV_A_ (W)w);
2449 if (expect_false (!ev_is_active (w))) 4215 if (ecb_expect_false (!ev_is_active (w)))
2450 return; 4216 return;
2451 4217
2452 EV_FREQUENT_CHECK; 4218 EV_FREQUENT_CHECK;
2453 4219
2454 { 4220 {
… …
2456 4222
2457 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 4223 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2458 4224
2459 --periodiccnt; 4225 --periodiccnt;
2460 4226
2461 if (expect_true (active < periodiccnt + HEAP0)) 4227 if (ecb_expect_true (active < periodiccnt + HEAP0))
2462 { 4228 {
2463 periodics [active] = periodics [periodiccnt + HEAP0]; 4229 periodics [active] = periodics [periodiccnt + HEAP0];
2464 adjustheap (periodics, periodiccnt, active); 4230 adjustheap (periodics, periodiccnt, active);
2465 } 4231 }
2466 } 4232 }
2467 4233
2468 EV_FREQUENT_CHECK;
2469
2470 ev_stop (EV_A_ (W)w); 4234 ev_stop (EV_A_ (W)w);
2471}
2472 4235
2473void noinline 4236 EV_FREQUENT_CHECK;
4237}
4238
4239ecb_noinline
4240void
2474ev_periodic_again (EV_P_ ev_periodic *w) 4241ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
2475{ 4242{
2476 /* TODO: use adjustheap and recalculation */ 4243 /* TODO: use adjustheap and recalculation */
2477 ev_periodic_stop (EV_A_ w); 4244 ev_periodic_stop (EV_A_ w);
2478 ev_periodic_start (EV_A_ w); 4245 ev_periodic_start (EV_A_ w);
2479} 4246}
… …
2481 4248
2482#ifndef SA_RESTART 4249#ifndef SA_RESTART
2483# define SA_RESTART 0 4250# define SA_RESTART 0
2484#endif 4251#endif
2485 4252
2486void noinline 4253#if EV_SIGNAL_ENABLE
4254
4255ecb_noinline
4256void
2487ev_signal_start (EV_P_ ev_signal *w) 4257ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
2488{ 4258{
4259 if (ecb_expect_false (ev_is_active (w)))
4260 return;
4261
4262 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
4263
2489#if EV_MULTIPLICITY 4264#if EV_MULTIPLICITY
2490 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4265 assert (("libev: a signal must not be attached to two different loops",
2491#endif 4266 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2492 if (expect_false (ev_is_active (w)))
2493 return;
2494 4267
2495 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0)); 4268 signals [w->signum - 1].loop = EV_A;
4269 ECB_MEMORY_FENCE_RELEASE;
4270#endif
2496 4271
2497 evpipe_init (EV_A);
2498
2499 EV_FREQUENT_CHECK; 4272 EV_FREQUENT_CHECK;
2500 4273
4274#if EV_USE_SIGNALFD
4275 if (sigfd == -2)
2501 { 4276 {
2502#ifndef _WIN32 4277 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2503 sigset_t full, prev; 4278 if (sigfd < 0 && errno == EINVAL)
2504 sigfillset (&full); 4279 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2505 sigprocmask (SIG_SETMASK, &full, &prev);
2506#endif
2507 4280
2508 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); 4281 if (sigfd >= 0)
4282 {
4283 fd_intern (sigfd); /* doing it twice will not hurt */
2509 4284
2510#ifndef _WIN32 4285 sigemptyset (&sigfd_set);
2511 sigprocmask (SIG_SETMASK, &prev, 0); 4286
2512#endif 4287 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
4288 ev_set_priority (&sigfd_w, EV_MAXPRI);
4289 ev_io_start (EV_A_ &sigfd_w);
4290 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
4291 }
2513 } 4292 }
4293
4294 if (sigfd >= 0)
4295 {
4296 /* TODO: check .head */
4297 sigaddset (&sigfd_set, w->signum);
4298 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
4299
4300 signalfd (sigfd, &sigfd_set, 0);
4301 }
4302#endif
2514 4303
2515 ev_start (EV_A_ (W)w, 1); 4304 ev_start (EV_A_ (W)w, 1);
2516 wlist_add (&signals [w->signum - 1].head, (WL)w); 4305 wlist_add (&signals [w->signum - 1].head, (WL)w);
2517 4306
2518 if (!((WL)w)->next) 4307 if (!((WL)w)->next)
4308# if EV_USE_SIGNALFD
4309 if (sigfd < 0) /*TODO*/
4310# endif
2519 { 4311 {
2520#if _WIN32 4312# ifdef _WIN32
4313 evpipe_init (EV_A);
4314
2521 signal (w->signum, ev_sighandler); 4315 signal (w->signum, ev_sighandler);
2522#else 4316# else
2523 struct sigaction sa; 4317 struct sigaction sa;
4318
4319 evpipe_init (EV_A);
4320
2524 sa.sa_handler = ev_sighandler; 4321 sa.sa_handler = ev_sighandler;
2525 sigfillset (&sa.sa_mask); 4322 sigfillset (&sa.sa_mask);
2526 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 4323 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2527 sigaction (w->signum, &sa, 0); 4324 sigaction (w->signum, &sa, 0);
4325
4326 if (origflags & EVFLAG_NOSIGMASK)
4327 {
4328 sigemptyset (&sa.sa_mask);
4329 sigaddset (&sa.sa_mask, w->signum);
4330 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
4331 }
2528#endif 4332#endif
2529 } 4333 }
2530 4334
2531 EV_FREQUENT_CHECK; 4335 EV_FREQUENT_CHECK;
2532} 4336}
2533 4337
2534void noinline 4338ecb_noinline
4339void
2535ev_signal_stop (EV_P_ ev_signal *w) 4340ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
2536{ 4341{
2537 clear_pending (EV_A_ (W)w); 4342 clear_pending (EV_A_ (W)w);
2538 if (expect_false (!ev_is_active (w))) 4343 if (ecb_expect_false (!ev_is_active (w)))
2539 return; 4344 return;
2540 4345
2541 EV_FREQUENT_CHECK; 4346 EV_FREQUENT_CHECK;
2542 4347
2543 wlist_del (&signals [w->signum - 1].head, (WL)w); 4348 wlist_del (&signals [w->signum - 1].head, (WL)w);
2544 ev_stop (EV_A_ (W)w); 4349 ev_stop (EV_A_ (W)w);
2545 4350
2546 if (!signals [w->signum - 1].head) 4351 if (!signals [w->signum - 1].head)
4352 {
4353#if EV_MULTIPLICITY
4354 signals [w->signum - 1].loop = 0; /* unattach from signal */
4355#endif
4356#if EV_USE_SIGNALFD
4357 if (sigfd >= 0)
4358 {
4359 sigset_t ss;
4360
4361 sigemptyset (&ss);
4362 sigaddset (&ss, w->signum);
4363 sigdelset (&sigfd_set, w->signum);
4364
4365 signalfd (sigfd, &sigfd_set, 0);
4366 sigprocmask (SIG_UNBLOCK, &ss, 0);
4367 }
4368 else
4369#endif
2547 signal (w->signum, SIG_DFL); 4370 signal (w->signum, SIG_DFL);
4371 }
2548 4372
2549 EV_FREQUENT_CHECK; 4373 EV_FREQUENT_CHECK;
2550} 4374}
2551 4375
4376#endif
4377
4378#if EV_CHILD_ENABLE
4379
2552void 4380void
2553ev_child_start (EV_P_ ev_child *w) 4381ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
2554{ 4382{
2555#if EV_MULTIPLICITY 4383#if EV_MULTIPLICITY
2556 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4384 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2557#endif 4385#endif
2558 if (expect_false (ev_is_active (w))) 4386 if (ecb_expect_false (ev_is_active (w)))
2559 return; 4387 return;
2560 4388
2561 EV_FREQUENT_CHECK; 4389 EV_FREQUENT_CHECK;
2562 4390
2563 ev_start (EV_A_ (W)w, 1); 4391 ev_start (EV_A_ (W)w, 1);
2564 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4392 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2565 4393
2566 EV_FREQUENT_CHECK; 4394 EV_FREQUENT_CHECK;
2567} 4395}
2568 4396
2569void 4397void
2570ev_child_stop (EV_P_ ev_child *w) 4398ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
2571{ 4399{
2572 clear_pending (EV_A_ (W)w); 4400 clear_pending (EV_A_ (W)w);
2573 if (expect_false (!ev_is_active (w))) 4401 if (ecb_expect_false (!ev_is_active (w)))
2574 return; 4402 return;
2575 4403
2576 EV_FREQUENT_CHECK; 4404 EV_FREQUENT_CHECK;
2577 4405
2578 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4406 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2579 ev_stop (EV_A_ (W)w); 4407 ev_stop (EV_A_ (W)w);
2580 4408
2581 EV_FREQUENT_CHECK; 4409 EV_FREQUENT_CHECK;
2582} 4410}
4411
4412#endif
2583 4413
2584#if EV_STAT_ENABLE 4414#if EV_STAT_ENABLE
2585 4415
2586# ifdef _WIN32 4416# ifdef _WIN32
2587# undef lstat 4417# undef lstat
… …
2590 4420
2591#define DEF_STAT_INTERVAL 5.0074891 4421#define DEF_STAT_INTERVAL 5.0074891
2592#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4422#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2593#define MIN_STAT_INTERVAL 0.1074891 4423#define MIN_STAT_INTERVAL 0.1074891
2594 4424
2595static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4425ecb_noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2596 4426
2597#if EV_USE_INOTIFY 4427#if EV_USE_INOTIFY
2598# define EV_INOTIFY_BUFSIZE 8192
2599 4428
2600static void noinline 4429/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
4430# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
4431
4432ecb_noinline
4433static void
2601infy_add (EV_P_ ev_stat *w) 4434infy_add (EV_P_ ev_stat *w)
2602{ 4435{
2603 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); 4436 w->wd = inotify_add_watch (fs_fd, w->path,
4437 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4438 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4439 | IN_DONT_FOLLOW | IN_MASK_ADD);
2604 4440
2605 if (w->wd < 0) 4441 if (w->wd >= 0)
4442 {
4443 struct statfs sfs;
4444
4445 /* now local changes will be tracked by inotify, but remote changes won't */
4446 /* unless the filesystem is known to be local, we therefore still poll */
4447 /* also do poll on <2.6.25, but with normal frequency */
4448
4449 if (!fs_2625)
4450 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
4451 else if (!statfs (w->path, &sfs)
4452 && (sfs.f_type == 0x1373 /* devfs */
4453 || sfs.f_type == 0x4006 /* fat */
4454 || sfs.f_type == 0x4d44 /* msdos */
4455 || sfs.f_type == 0xEF53 /* ext2/3 */
4456 || sfs.f_type == 0x72b6 /* jffs2 */
4457 || sfs.f_type == 0x858458f6 /* ramfs */
4458 || sfs.f_type == 0x5346544e /* ntfs */
4459 || sfs.f_type == 0x3153464a /* jfs */
4460 || sfs.f_type == 0x9123683e /* btrfs */
4461 || sfs.f_type == 0x52654973 /* reiser3 */
4462 || sfs.f_type == 0x01021994 /* tmpfs */
4463 || sfs.f_type == 0x58465342 /* xfs */))
4464 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
4465 else
4466 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2606 { 4467 }
4468 else
4469 {
4470 /* can't use inotify, continue to stat */
2607 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4471 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2608 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2609 4472
2610 /* monitor some parent directory for speedup hints */ 4473 /* if path is not there, monitor some parent directory for speedup hints */
2611 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 4474 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2612 /* but an efficiency issue only */ 4475 /* but an efficiency issue only */
2613 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 4476 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2614 { 4477 {
2615 char path [4096]; 4478 char path [4096];
… …
2625 if (!pend || pend == path) 4488 if (!pend || pend == path)
2626 break; 4489 break;
2627 4490
2628 *pend = 0; 4491 *pend = 0;
2629 w->wd = inotify_add_watch (fs_fd, path, mask); 4492 w->wd = inotify_add_watch (fs_fd, path, mask);
2630 } 4493 }
2631 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 4494 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2632 } 4495 }
2633 } 4496 }
2634 4497
2635 if (w->wd >= 0) 4498 if (w->wd >= 0)
2636 {
2637 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4499 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2638 4500
2639 /* now local changes will be tracked by inotify, but remote changes won't */ 4501 /* now re-arm timer, if required */
2640 /* unless the filesystem it known to be local, we therefore still poll */ 4502 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2641 /* also do poll on <2.6.25, but with normal frequency */
2642 struct statfs sfs;
2643
2644 if (fs_2625 && !statfs (w->path, &sfs))
2645 if (sfs.f_type == 0x1373 /* devfs */
2646 || sfs.f_type == 0xEF53 /* ext2/3 */
2647 || sfs.f_type == 0x3153464a /* jfs */
2648 || sfs.f_type == 0x52654973 /* reiser3 */
2649 || sfs.f_type == 0x01021994 /* tempfs */
2650 || sfs.f_type == 0x58465342 /* xfs */)
2651 return;
2652
2653 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2654 ev_timer_again (EV_A_ &w->timer); 4503 ev_timer_again (EV_A_ &w->timer);
2655 } 4504 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2656} 4505}
2657 4506
2658static void noinline 4507ecb_noinline
4508static void
2659infy_del (EV_P_ ev_stat *w) 4509infy_del (EV_P_ ev_stat *w)
2660{ 4510{
2661 int slot; 4511 int slot;
2662 int wd = w->wd; 4512 int wd = w->wd;
2663 4513
2664 if (wd < 0) 4514 if (wd < 0)
2665 return; 4515 return;
2666 4516
2667 w->wd = -2; 4517 w->wd = -2;
2668 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 4518 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2669 wlist_del (&fs_hash [slot].head, (WL)w); 4519 wlist_del (&fs_hash [slot].head, (WL)w);
2670 4520
2671 /* remove this watcher, if others are watching it, they will rearm */ 4521 /* remove this watcher, if others are watching it, they will rearm */
2672 inotify_rm_watch (fs_fd, wd); 4522 inotify_rm_watch (fs_fd, wd);
2673} 4523}
2674 4524
2675static void noinline 4525ecb_noinline
4526static void
2676infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4527infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2677{ 4528{
2678 if (slot < 0) 4529 if (slot < 0)
2679 /* overflow, need to check for all hash slots */ 4530 /* overflow, need to check for all hash slots */
2680 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4531 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2681 infy_wd (EV_A_ slot, wd, ev); 4532 infy_wd (EV_A_ slot, wd, ev);
2682 else 4533 else
2683 { 4534 {
2684 WL w_; 4535 WL w_;
2685 4536
2686 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 4537 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2687 { 4538 {
2688 ev_stat *w = (ev_stat *)w_; 4539 ev_stat *w = (ev_stat *)w_;
2689 w_ = w_->next; /* lets us remove this watcher and all before it */ 4540 w_ = w_->next; /* lets us remove this watcher and all before it */
2690 4541
2691 if (w->wd == wd || wd == -1) 4542 if (w->wd == wd || wd == -1)
2692 { 4543 {
2693 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 4544 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2694 { 4545 {
2695 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4546 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2696 w->wd = -1; 4547 w->wd = -1;
2697 infy_add (EV_A_ w); /* re-add, no matter what */ 4548 infy_add (EV_A_ w); /* re-add, no matter what */
2698 } 4549 }
2699 4550
2700 stat_timer_cb (EV_A_ &w->timer, 0); 4551 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2705 4556
2706static void 4557static void
2707infy_cb (EV_P_ ev_io *w, int revents) 4558infy_cb (EV_P_ ev_io *w, int revents)
2708{ 4559{
2709 char buf [EV_INOTIFY_BUFSIZE]; 4560 char buf [EV_INOTIFY_BUFSIZE];
2710 struct inotify_event *ev = (struct inotify_event *)buf;
2711 int ofs; 4561 int ofs;
2712 int len = read (fs_fd, buf, sizeof (buf)); 4562 int len = read (fs_fd, buf, sizeof (buf));
2713 4563
2714 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 4564 for (ofs = 0; ofs < len; )
4565 {
4566 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2715 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4567 infy_wd (EV_A_ ev->wd, ev->wd, ev);
4568 ofs += sizeof (struct inotify_event) + ev->len;
4569 }
2716} 4570}
2717 4571
2718inline_size void 4572inline_size ecb_cold
4573void
2719check_2625 (EV_P) 4574ev_check_2625 (EV_P)
2720{ 4575{
2721 /* kernels < 2.6.25 are borked 4576 /* kernels < 2.6.25 are borked
2722 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4577 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2723 */ 4578 */
2724 struct utsname buf; 4579 if (ev_linux_version () < 0x020619)
2725 int major, minor, micro;
2726
2727 if (uname (&buf))
2728 return; 4580 return;
2729 4581
2730 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2731 return;
2732
2733 if (major < 2
2734 || (major == 2 && minor < 6)
2735 || (major == 2 && minor == 6 && micro < 25))
2736 return;
2737
2738 fs_2625 = 1; 4582 fs_2625 = 1;
4583}
4584
4585inline_size int
4586infy_newfd (void)
4587{
4588#if defined IN_CLOEXEC && defined IN_NONBLOCK
4589 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
4590 if (fd >= 0)
4591 return fd;
4592#endif
4593 return inotify_init ();
2739} 4594}
2740 4595
2741inline_size void 4596inline_size void
2742infy_init (EV_P) 4597infy_init (EV_P)
2743{ 4598{
2744 if (fs_fd != -2) 4599 if (fs_fd != -2)
2745 return; 4600 return;
2746 4601
2747 fs_fd = -1; 4602 fs_fd = -1;
2748 4603
2749 check_2625 (EV_A); 4604 ev_check_2625 (EV_A);
2750 4605
2751 fs_fd = inotify_init (); 4606 fs_fd = infy_newfd ();
2752 4607
2753 if (fs_fd >= 0) 4608 if (fs_fd >= 0)
2754 { 4609 {
4610 fd_intern (fs_fd);
2755 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 4611 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2756 ev_set_priority (&fs_w, EV_MAXPRI); 4612 ev_set_priority (&fs_w, EV_MAXPRI);
2757 ev_io_start (EV_A_ &fs_w); 4613 ev_io_start (EV_A_ &fs_w);
4614 ev_unref (EV_A);
2758 } 4615 }
2759} 4616}
2760 4617
2761inline_size void 4618inline_size void
2762infy_fork (EV_P) 4619infy_fork (EV_P)
… …
2764 int slot; 4621 int slot;
2765 4622
2766 if (fs_fd < 0) 4623 if (fs_fd < 0)
2767 return; 4624 return;
2768 4625
4626 ev_ref (EV_A);
4627 ev_io_stop (EV_A_ &fs_w);
2769 close (fs_fd); 4628 close (fs_fd);
2770 fs_fd = inotify_init (); 4629 fs_fd = infy_newfd ();
2771 4630
4631 if (fs_fd >= 0)
4632 {
4633 fd_intern (fs_fd);
4634 ev_io_set (&fs_w, fs_fd, EV_READ);
4635 ev_io_start (EV_A_ &fs_w);
4636 ev_unref (EV_A);
4637 }
4638
2772 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4639 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2773 { 4640 {
2774 WL w_ = fs_hash [slot].head; 4641 WL w_ = fs_hash [slot].head;
2775 fs_hash [slot].head = 0; 4642 fs_hash [slot].head = 0;
2776 4643
2777 while (w_) 4644 while (w_)
… …
2782 w->wd = -1; 4649 w->wd = -1;
2783 4650
2784 if (fs_fd >= 0) 4651 if (fs_fd >= 0)
2785 infy_add (EV_A_ w); /* re-add, no matter what */ 4652 infy_add (EV_A_ w); /* re-add, no matter what */
2786 else 4653 else
4654 {
4655 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
4656 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2787 ev_timer_again (EV_A_ &w->timer); 4657 ev_timer_again (EV_A_ &w->timer);
4658 if (ev_is_active (&w->timer)) ev_unref (EV_A);
4659 }
2788 } 4660 }
2789 } 4661 }
2790} 4662}
2791 4663
2792#endif 4664#endif
… …
2796#else 4668#else
2797# define EV_LSTAT(p,b) lstat (p, b) 4669# define EV_LSTAT(p,b) lstat (p, b)
2798#endif 4670#endif
2799 4671
2800void 4672void
2801ev_stat_stat (EV_P_ ev_stat *w) 4673ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
2802{ 4674{
2803 if (lstat (w->path, &w->attr) < 0) 4675 if (lstat (w->path, &w->attr) < 0)
2804 w->attr.st_nlink = 0; 4676 w->attr.st_nlink = 0;
2805 else if (!w->attr.st_nlink) 4677 else if (!w->attr.st_nlink)
2806 w->attr.st_nlink = 1; 4678 w->attr.st_nlink = 1;
2807} 4679}
2808 4680
2809static void noinline 4681ecb_noinline
4682static void
2810stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4683stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2811{ 4684{
2812 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4685 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2813 4686
2814 /* we copy this here each the time so that */ 4687 ev_statdata prev = w->attr;
2815 /* prev has the old value when the callback gets invoked */
2816 w->prev = w->attr;
2817 ev_stat_stat (EV_A_ w); 4688 ev_stat_stat (EV_A_ w);
2818 4689
2819 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 4690 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2820 if ( 4691 if (
2821 w->prev.st_dev != w->attr.st_dev 4692 prev.st_dev != w->attr.st_dev
2822 || w->prev.st_ino != w->attr.st_ino 4693 || prev.st_ino != w->attr.st_ino
2823 || w->prev.st_mode != w->attr.st_mode 4694 || prev.st_mode != w->attr.st_mode
2824 || w->prev.st_nlink != w->attr.st_nlink 4695 || prev.st_nlink != w->attr.st_nlink
2825 || w->prev.st_uid != w->attr.st_uid 4696 || prev.st_uid != w->attr.st_uid
2826 || w->prev.st_gid != w->attr.st_gid 4697 || prev.st_gid != w->attr.st_gid
2827 || w->prev.st_rdev != w->attr.st_rdev 4698 || prev.st_rdev != w->attr.st_rdev
2828 || w->prev.st_size != w->attr.st_size 4699 || prev.st_size != w->attr.st_size
2829 || w->prev.st_atime != w->attr.st_atime 4700 || prev.st_atime != w->attr.st_atime
2830 || w->prev.st_mtime != w->attr.st_mtime 4701 || prev.st_mtime != w->attr.st_mtime
2831 || w->prev.st_ctime != w->attr.st_ctime 4702 || prev.st_ctime != w->attr.st_ctime
2832 ) { 4703 ) {
4704 /* we only update w->prev on actual differences */
4705 /* in case we test more often than invoke the callback, */
4706 /* to ensure that prev is always different to attr */
4707 w->prev = prev;
4708
2833 #if EV_USE_INOTIFY 4709 #if EV_USE_INOTIFY
2834 if (fs_fd >= 0) 4710 if (fs_fd >= 0)
2835 { 4711 {
2836 infy_del (EV_A_ w); 4712 infy_del (EV_A_ w);
2837 infy_add (EV_A_ w); 4713 infy_add (EV_A_ w);
… …
2842 ev_feed_event (EV_A_ w, EV_STAT); 4718 ev_feed_event (EV_A_ w, EV_STAT);
2843 } 4719 }
2844} 4720}
2845 4721
2846void 4722void
2847ev_stat_start (EV_P_ ev_stat *w) 4723ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
2848{ 4724{
2849 if (expect_false (ev_is_active (w))) 4725 if (ecb_expect_false (ev_is_active (w)))
2850 return; 4726 return;
2851 4727
2852 ev_stat_stat (EV_A_ w); 4728 ev_stat_stat (EV_A_ w);
2853 4729
2854 if (w->interval < MIN_STAT_INTERVAL && w->interval) 4730 if (w->interval < MIN_STAT_INTERVAL && w->interval)
… …
2862 4738
2863 if (fs_fd >= 0) 4739 if (fs_fd >= 0)
2864 infy_add (EV_A_ w); 4740 infy_add (EV_A_ w);
2865 else 4741 else
2866#endif 4742#endif
4743 {
2867 ev_timer_again (EV_A_ &w->timer); 4744 ev_timer_again (EV_A_ &w->timer);
4745 ev_unref (EV_A);
4746 }
2868 4747
2869 ev_start (EV_A_ (W)w, 1); 4748 ev_start (EV_A_ (W)w, 1);
2870 4749
2871 EV_FREQUENT_CHECK; 4750 EV_FREQUENT_CHECK;
2872} 4751}
2873 4752
2874void 4753void
2875ev_stat_stop (EV_P_ ev_stat *w) 4754ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
2876{ 4755{
2877 clear_pending (EV_A_ (W)w); 4756 clear_pending (EV_A_ (W)w);
2878 if (expect_false (!ev_is_active (w))) 4757 if (ecb_expect_false (!ev_is_active (w)))
2879 return; 4758 return;
2880 4759
2881 EV_FREQUENT_CHECK; 4760 EV_FREQUENT_CHECK;
2882 4761
2883#if EV_USE_INOTIFY 4762#if EV_USE_INOTIFY
2884 infy_del (EV_A_ w); 4763 infy_del (EV_A_ w);
2885#endif 4764#endif
4765
4766 if (ev_is_active (&w->timer))
4767 {
4768 ev_ref (EV_A);
2886 ev_timer_stop (EV_A_ &w->timer); 4769 ev_timer_stop (EV_A_ &w->timer);
4770 }
2887 4771
2888 ev_stop (EV_A_ (W)w); 4772 ev_stop (EV_A_ (W)w);
2889 4773
2890 EV_FREQUENT_CHECK; 4774 EV_FREQUENT_CHECK;
2891} 4775}
2892#endif 4776#endif
2893 4777
2894#if EV_IDLE_ENABLE 4778#if EV_IDLE_ENABLE
2895void 4779void
2896ev_idle_start (EV_P_ ev_idle *w) 4780ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
2897{ 4781{
2898 if (expect_false (ev_is_active (w))) 4782 if (ecb_expect_false (ev_is_active (w)))
2899 return; 4783 return;
2900 4784
2901 pri_adjust (EV_A_ (W)w); 4785 pri_adjust (EV_A_ (W)w);
2902 4786
2903 EV_FREQUENT_CHECK; 4787 EV_FREQUENT_CHECK;
… …
2906 int active = ++idlecnt [ABSPRI (w)]; 4790 int active = ++idlecnt [ABSPRI (w)];
2907 4791
2908 ++idleall; 4792 ++idleall;
2909 ev_start (EV_A_ (W)w, active); 4793 ev_start (EV_A_ (W)w, active);
2910 4794
2911 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 4795 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
2912 idles [ABSPRI (w)][active - 1] = w; 4796 idles [ABSPRI (w)][active - 1] = w;
2913 } 4797 }
2914 4798
2915 EV_FREQUENT_CHECK; 4799 EV_FREQUENT_CHECK;
2916} 4800}
2917 4801
2918void 4802void
2919ev_idle_stop (EV_P_ ev_idle *w) 4803ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
2920{ 4804{
2921 clear_pending (EV_A_ (W)w); 4805 clear_pending (EV_A_ (W)w);
2922 if (expect_false (!ev_is_active (w))) 4806 if (ecb_expect_false (!ev_is_active (w)))
2923 return; 4807 return;
2924 4808
2925 EV_FREQUENT_CHECK; 4809 EV_FREQUENT_CHECK;
2926 4810
2927 { 4811 {
… …
2936 4820
2937 EV_FREQUENT_CHECK; 4821 EV_FREQUENT_CHECK;
2938} 4822}
2939#endif 4823#endif
2940 4824
4825#if EV_PREPARE_ENABLE
2941void 4826void
2942ev_prepare_start (EV_P_ ev_prepare *w) 4827ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
2943{ 4828{
2944 if (expect_false (ev_is_active (w))) 4829 if (ecb_expect_false (ev_is_active (w)))
2945 return; 4830 return;
2946 4831
2947 EV_FREQUENT_CHECK; 4832 EV_FREQUENT_CHECK;
2948 4833
2949 ev_start (EV_A_ (W)w, ++preparecnt); 4834 ev_start (EV_A_ (W)w, ++preparecnt);
2950 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4835 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
2951 prepares [preparecnt - 1] = w; 4836 prepares [preparecnt - 1] = w;
2952 4837
2953 EV_FREQUENT_CHECK; 4838 EV_FREQUENT_CHECK;
2954} 4839}
2955 4840
2956void 4841void
2957ev_prepare_stop (EV_P_ ev_prepare *w) 4842ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
2958{ 4843{
2959 clear_pending (EV_A_ (W)w); 4844 clear_pending (EV_A_ (W)w);
2960 if (expect_false (!ev_is_active (w))) 4845 if (ecb_expect_false (!ev_is_active (w)))
2961 return; 4846 return;
2962 4847
2963 EV_FREQUENT_CHECK; 4848 EV_FREQUENT_CHECK;
2964 4849
2965 { 4850 {
… …
2971 4856
2972 ev_stop (EV_A_ (W)w); 4857 ev_stop (EV_A_ (W)w);
2973 4858
2974 EV_FREQUENT_CHECK; 4859 EV_FREQUENT_CHECK;
2975} 4860}
4861#endif
2976 4862
4863#if EV_CHECK_ENABLE
2977void 4864void
2978ev_check_start (EV_P_ ev_check *w) 4865ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
2979{ 4866{
2980 if (expect_false (ev_is_active (w))) 4867 if (ecb_expect_false (ev_is_active (w)))
2981 return; 4868 return;
2982 4869
2983 EV_FREQUENT_CHECK; 4870 EV_FREQUENT_CHECK;
2984 4871
2985 ev_start (EV_A_ (W)w, ++checkcnt); 4872 ev_start (EV_A_ (W)w, ++checkcnt);
2986 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 4873 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
2987 checks [checkcnt - 1] = w; 4874 checks [checkcnt - 1] = w;
2988 4875
2989 EV_FREQUENT_CHECK; 4876 EV_FREQUENT_CHECK;
2990} 4877}
2991 4878
2992void 4879void
2993ev_check_stop (EV_P_ ev_check *w) 4880ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
2994{ 4881{
2995 clear_pending (EV_A_ (W)w); 4882 clear_pending (EV_A_ (W)w);
2996 if (expect_false (!ev_is_active (w))) 4883 if (ecb_expect_false (!ev_is_active (w)))
2997 return; 4884 return;
2998 4885
2999 EV_FREQUENT_CHECK; 4886 EV_FREQUENT_CHECK;
3000 4887
3001 { 4888 {
… …
3007 4894
3008 ev_stop (EV_A_ (W)w); 4895 ev_stop (EV_A_ (W)w);
3009 4896
3010 EV_FREQUENT_CHECK; 4897 EV_FREQUENT_CHECK;
3011} 4898}
4899#endif
3012 4900
3013#if EV_EMBED_ENABLE 4901#if EV_EMBED_ENABLE
3014void noinline 4902ecb_noinline
4903void
3015ev_embed_sweep (EV_P_ ev_embed *w) 4904ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
3016{ 4905{
3017 ev_loop (w->other, EVLOOP_NONBLOCK); 4906 ev_run (w->other, EVRUN_NOWAIT);
3018} 4907}
3019 4908
3020static void 4909static void
3021embed_io_cb (EV_P_ ev_io *io, int revents) 4910embed_io_cb (EV_P_ ev_io *io, int revents)
3022{ 4911{
3023 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4912 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3024 4913
3025 if (ev_cb (w)) 4914 if (ev_cb (w))
3026 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4915 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3027 else 4916 else
3028 ev_loop (w->other, EVLOOP_NONBLOCK); 4917 ev_run (w->other, EVRUN_NOWAIT);
3029} 4918}
3030 4919
3031static void 4920static void
3032embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4921embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3033{ 4922{
3034 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 4923 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
3035 4924
3036 { 4925 {
3037 struct ev_loop *loop = w->other; 4926 EV_P = w->other;
3038 4927
3039 while (fdchangecnt) 4928 while (fdchangecnt)
3040 { 4929 {
3041 fd_reify (EV_A); 4930 fd_reify (EV_A);
3042 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4931 ev_run (EV_A_ EVRUN_NOWAIT);
3043 } 4932 }
3044 } 4933 }
3045} 4934}
3046 4935
3047static void 4936static void
… …
3050 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 4939 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3051 4940
3052 ev_embed_stop (EV_A_ w); 4941 ev_embed_stop (EV_A_ w);
3053 4942
3054 { 4943 {
3055 struct ev_loop *loop = w->other; 4944 EV_P = w->other;
3056 4945
3057 ev_loop_fork (EV_A); 4946 ev_loop_fork (EV_A);
3058 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4947 ev_run (EV_A_ EVRUN_NOWAIT);
3059 } 4948 }
3060 4949
3061 ev_embed_start (EV_A_ w); 4950 ev_embed_start (EV_A_ w);
3062} 4951}
3063 4952
… …
3068 ev_idle_stop (EV_A_ idle); 4957 ev_idle_stop (EV_A_ idle);
3069} 4958}
3070#endif 4959#endif
3071 4960
3072void 4961void
3073ev_embed_start (EV_P_ ev_embed *w) 4962ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
3074{ 4963{
3075 if (expect_false (ev_is_active (w))) 4964 if (ecb_expect_false (ev_is_active (w)))
3076 return; 4965 return;
3077 4966
3078 { 4967 {
3079 struct ev_loop *loop = w->other; 4968 EV_P = w->other;
3080 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4969 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
3081 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 4970 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3082 } 4971 }
3083 4972
3084 EV_FREQUENT_CHECK; 4973 EV_FREQUENT_CHECK;
… …
3099 4988
3100 EV_FREQUENT_CHECK; 4989 EV_FREQUENT_CHECK;
3101} 4990}
3102 4991
3103void 4992void
3104ev_embed_stop (EV_P_ ev_embed *w) 4993ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
3105{ 4994{
3106 clear_pending (EV_A_ (W)w); 4995 clear_pending (EV_A_ (W)w);
3107 if (expect_false (!ev_is_active (w))) 4996 if (ecb_expect_false (!ev_is_active (w)))
3108 return; 4997 return;
3109 4998
3110 EV_FREQUENT_CHECK; 4999 EV_FREQUENT_CHECK;
3111 5000
3112 ev_io_stop (EV_A_ &w->io); 5001 ev_io_stop (EV_A_ &w->io);
3113 ev_prepare_stop (EV_A_ &w->prepare); 5002 ev_prepare_stop (EV_A_ &w->prepare);
3114 ev_fork_stop (EV_A_ &w->fork); 5003 ev_fork_stop (EV_A_ &w->fork);
3115 5004
5005 ev_stop (EV_A_ (W)w);
5006
3116 EV_FREQUENT_CHECK; 5007 EV_FREQUENT_CHECK;
3117} 5008}
3118#endif 5009#endif
3119 5010
3120#if EV_FORK_ENABLE 5011#if EV_FORK_ENABLE
3121void 5012void
3122ev_fork_start (EV_P_ ev_fork *w) 5013ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
3123{ 5014{
3124 if (expect_false (ev_is_active (w))) 5015 if (ecb_expect_false (ev_is_active (w)))
3125 return; 5016 return;
3126 5017
3127 EV_FREQUENT_CHECK; 5018 EV_FREQUENT_CHECK;
3128 5019
3129 ev_start (EV_A_ (W)w, ++forkcnt); 5020 ev_start (EV_A_ (W)w, ++forkcnt);
3130 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 5021 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
3131 forks [forkcnt - 1] = w; 5022 forks [forkcnt - 1] = w;
3132 5023
3133 EV_FREQUENT_CHECK; 5024 EV_FREQUENT_CHECK;
3134} 5025}
3135 5026
3136void 5027void
3137ev_fork_stop (EV_P_ ev_fork *w) 5028ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
3138{ 5029{
3139 clear_pending (EV_A_ (W)w); 5030 clear_pending (EV_A_ (W)w);
3140 if (expect_false (!ev_is_active (w))) 5031 if (ecb_expect_false (!ev_is_active (w)))
3141 return; 5032 return;
3142 5033
3143 EV_FREQUENT_CHECK; 5034 EV_FREQUENT_CHECK;
3144 5035
3145 { 5036 {
… …
3153 5044
3154 EV_FREQUENT_CHECK; 5045 EV_FREQUENT_CHECK;
3155} 5046}
3156#endif 5047#endif
3157 5048
5049#if EV_CLEANUP_ENABLE
5050void
5051ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
5052{
5053 if (ecb_expect_false (ev_is_active (w)))
5054 return;
5055
5056 EV_FREQUENT_CHECK;
5057
5058 ev_start (EV_A_ (W)w, ++cleanupcnt);
5059 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
5060 cleanups [cleanupcnt - 1] = w;
5061
5062 /* cleanup watchers should never keep a refcount on the loop */
5063 ev_unref (EV_A);
5064 EV_FREQUENT_CHECK;
5065}
5066
5067void
5068ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
5069{
5070 clear_pending (EV_A_ (W)w);
5071 if (ecb_expect_false (!ev_is_active (w)))
5072 return;
5073
5074 EV_FREQUENT_CHECK;
5075 ev_ref (EV_A);
5076
5077 {
5078 int active = ev_active (w);
5079
5080 cleanups [active - 1] = cleanups [--cleanupcnt];
5081 ev_active (cleanups [active - 1]) = active;
5082 }
5083
5084 ev_stop (EV_A_ (W)w);
5085
5086 EV_FREQUENT_CHECK;
5087}
5088#endif
5089
3158#if EV_ASYNC_ENABLE 5090#if EV_ASYNC_ENABLE
3159void 5091void
3160ev_async_start (EV_P_ ev_async *w) 5092ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
3161{ 5093{
3162 if (expect_false (ev_is_active (w))) 5094 if (ecb_expect_false (ev_is_active (w)))
3163 return; 5095 return;
3164 5096
5097 w->sent = 0;
5098
3165 evpipe_init (EV_A); 5099 evpipe_init (EV_A);
3166 5100
3167 EV_FREQUENT_CHECK; 5101 EV_FREQUENT_CHECK;
3168 5102
3169 ev_start (EV_A_ (W)w, ++asynccnt); 5103 ev_start (EV_A_ (W)w, ++asynccnt);
3170 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 5104 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
3171 asyncs [asynccnt - 1] = w; 5105 asyncs [asynccnt - 1] = w;
3172 5106
3173 EV_FREQUENT_CHECK; 5107 EV_FREQUENT_CHECK;
3174} 5108}
3175 5109
3176void 5110void
3177ev_async_stop (EV_P_ ev_async *w) 5111ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
3178{ 5112{
3179 clear_pending (EV_A_ (W)w); 5113 clear_pending (EV_A_ (W)w);
3180 if (expect_false (!ev_is_active (w))) 5114 if (ecb_expect_false (!ev_is_active (w)))
3181 return; 5115 return;
3182 5116
3183 EV_FREQUENT_CHECK; 5117 EV_FREQUENT_CHECK;
3184 5118
3185 { 5119 {
… …
3193 5127
3194 EV_FREQUENT_CHECK; 5128 EV_FREQUENT_CHECK;
3195} 5129}
3196 5130
3197void 5131void
3198ev_async_send (EV_P_ ev_async *w) 5132ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
3199{ 5133{
3200 w->sent = 1; 5134 w->sent = 1;
3201 evpipe_write (EV_A_ &gotasync); 5135 evpipe_write (EV_A_ &async_pending);
3202} 5136}
3203#endif 5137#endif
3204 5138
3205/*****************************************************************************/ 5139/*****************************************************************************/
3206 5140
… …
3240 5174
3241 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5175 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3242} 5176}
3243 5177
3244void 5178void
3245ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 5179ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
3246{ 5180{
3247 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5181 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3248
3249 if (expect_false (!once))
3250 {
3251 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
3252 return;
3253 }
3254 5182
3255 once->cb = cb; 5183 once->cb = cb;
3256 once->arg = arg; 5184 once->arg = arg;
3257 5185
3258 ev_init (&once->io, once_cb_io); 5186 ev_init (&once->io, once_cb_io);
… …
3271} 5199}
3272 5200
3273/*****************************************************************************/ 5201/*****************************************************************************/
3274 5202
3275#if EV_WALK_ENABLE 5203#if EV_WALK_ENABLE
5204ecb_cold
3276void 5205void
3277ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 5206ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
3278{ 5207{
3279 int i, j; 5208 int i, j;
3280 ev_watcher_list *wl, *wn; 5209 ev_watcher_list *wl, *wn;
3281 5210
3282 if (types & (EV_IO | EV_EMBED)) 5211 if (types & (EV_IO | EV_EMBED))
… …
3325 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 5254 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3326#endif 5255#endif
3327 5256
3328#if EV_IDLE_ENABLE 5257#if EV_IDLE_ENABLE
3329 if (types & EV_IDLE) 5258 if (types & EV_IDLE)
3330 for (j = NUMPRI; i--; ) 5259 for (j = NUMPRI; j--; )
3331 for (i = idlecnt [j]; i--; ) 5260 for (i = idlecnt [j]; i--; )
3332 cb (EV_A_ EV_IDLE, idles [j][i]); 5261 cb (EV_A_ EV_IDLE, idles [j][i]);
3333#endif 5262#endif
3334 5263
3335#if EV_FORK_ENABLE 5264#if EV_FORK_ENABLE
… …
3343 if (types & EV_ASYNC) 5272 if (types & EV_ASYNC)
3344 for (i = asynccnt; i--; ) 5273 for (i = asynccnt; i--; )
3345 cb (EV_A_ EV_ASYNC, asyncs [i]); 5274 cb (EV_A_ EV_ASYNC, asyncs [i]);
3346#endif 5275#endif
3347 5276
5277#if EV_PREPARE_ENABLE
3348 if (types & EV_PREPARE) 5278 if (types & EV_PREPARE)
3349 for (i = preparecnt; i--; ) 5279 for (i = preparecnt; i--; )
3350#if EV_EMBED_ENABLE 5280# if EV_EMBED_ENABLE
3351 if (ev_cb (prepares [i]) != embed_prepare_cb) 5281 if (ev_cb (prepares [i]) != embed_prepare_cb)
3352#endif 5282# endif
3353 cb (EV_A_ EV_PREPARE, prepares [i]); 5283 cb (EV_A_ EV_PREPARE, prepares [i]);
5284#endif
3354 5285
5286#if EV_CHECK_ENABLE
3355 if (types & EV_CHECK) 5287 if (types & EV_CHECK)
3356 for (i = checkcnt; i--; ) 5288 for (i = checkcnt; i--; )
3357 cb (EV_A_ EV_CHECK, checks [i]); 5289 cb (EV_A_ EV_CHECK, checks [i]);
5290#endif
3358 5291
5292#if EV_SIGNAL_ENABLE
3359 if (types & EV_SIGNAL) 5293 if (types & EV_SIGNAL)
3360 for (i = 0; i < signalmax; ++i) 5294 for (i = 0; i < EV_NSIG - 1; ++i)
3361 for (wl = signals [i].head; wl; ) 5295 for (wl = signals [i].head; wl; )
3362 { 5296 {
3363 wn = wl->next; 5297 wn = wl->next;
3364 cb (EV_A_ EV_SIGNAL, wl); 5298 cb (EV_A_ EV_SIGNAL, wl);
3365 wl = wn; 5299 wl = wn;
3366 } 5300 }
5301#endif
3367 5302
5303#if EV_CHILD_ENABLE
3368 if (types & EV_CHILD) 5304 if (types & EV_CHILD)
3369 for (i = EV_PID_HASHSIZE; i--; ) 5305 for (i = (EV_PID_HASHSIZE); i--; )
3370 for (wl = childs [i]; wl; ) 5306 for (wl = childs [i]; wl; )
3371 { 5307 {
3372 wn = wl->next; 5308 wn = wl->next;
3373 cb (EV_A_ EV_CHILD, wl); 5309 cb (EV_A_ EV_CHILD, wl);
3374 wl = wn; 5310 wl = wn;
3375 } 5311 }
5312#endif
3376/* EV_STAT 0x00001000 /* stat data changed */ 5313/* EV_STAT 0x00001000 /* stat data changed */
3377/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 5314/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3378} 5315}
3379#endif 5316#endif
3380 5317
3381#if EV_MULTIPLICITY 5318#if EV_MULTIPLICITY
3382 #include "ev_wrap.h" 5319 #include "ev_wrap.h"
3383#endif 5320#endif
3384 5321
3385#ifdef __cplusplus
3386}
3387#endif
3388

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