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Comparing libev/ev.c (file contents):
Revision 1.300 by root, Tue Jul 14 20:31:21 2009 UTC vs.
Revision 1.505 by root, Wed Jul 10 14:25:35 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 "always" 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 larger than 32 bit, and maybe the unlikely floating 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#define EV_TV_GET(tv) ((tv).tv_sec + (tv).tv_usec * 1e6)
552#define EV_TS_GET(ts) ((ts).tv_sec + (ts).tv_nsec * 1e9)
553
554/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
555/* ECB.H BEGIN */
556/*
557 * libecb - http://software.schmorp.de/pkg/libecb
558 *
559 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
560 * Copyright (©) 2011 Emanuele Giaquinta
561 * All rights reserved.
562 *
563 * Redistribution and use in source and binary forms, with or without modifica-
564 * tion, are permitted provided that the following conditions are met:
565 *
566 * 1. Redistributions of source code must retain the above copyright notice,
567 * this list of conditions and the following disclaimer.
568 *
569 * 2. Redistributions in binary form must reproduce the above copyright
570 * notice, this list of conditions and the following disclaimer in the
571 * documentation and/or other materials provided with the distribution.
572 *
573 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
574 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
575 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
576 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
577 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
578 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
579 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
580 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
581 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
582 * OF THE POSSIBILITY OF SUCH DAMAGE.
583 *
584 * Alternatively, the contents of this file may be used under the terms of
585 * the GNU General Public License ("GPL") version 2 or any later version,
586 * in which case the provisions of the GPL are applicable instead of
587 * the above. If you wish to allow the use of your version of this file
588 * only under the terms of the GPL and not to allow others to use your
589 * version of this file under the BSD license, indicate your decision
590 * by deleting the provisions above and replace them with the notice
591 * and other provisions required by the GPL. If you do not delete the
592 * provisions above, a recipient may use your version of this file under
593 * either the BSD or the GPL.
594 */
595
596#ifndef ECB_H
597#define ECB_H
598
599/* 16 bits major, 16 bits minor */
600#define ECB_VERSION 0x00010006
601
602#ifdef _WIN32
603 typedef signed char int8_t;
604 typedef unsigned char uint8_t;
605 typedef signed short int16_t;
606 typedef unsigned short uint16_t;
607 typedef signed int int32_t;
608 typedef unsigned int uint32_t;
375#if __GNUC__ >= 4 609 #if __GNUC__
376# define expect(expr,value) __builtin_expect ((expr),(value)) 610 typedef signed long long int64_t;
377# define noinline __attribute__ ((noinline)) 611 typedef unsigned long long uint64_t;
612 #else /* _MSC_VER || __BORLANDC__ */
613 typedef signed __int64 int64_t;
614 typedef unsigned __int64 uint64_t;
615 #endif
616 #ifdef _WIN64
617 #define ECB_PTRSIZE 8
618 typedef uint64_t uintptr_t;
619 typedef int64_t intptr_t;
620 #else
621 #define ECB_PTRSIZE 4
622 typedef uint32_t uintptr_t;
623 typedef int32_t intptr_t;
624 #endif
378#else 625#else
379# define expect(expr,value) (expr) 626 #include <inttypes.h>
380# define noinline 627 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
381# if __STDC_VERSION__ < 199901L && __GNUC__ < 2 628 #define ECB_PTRSIZE 8
382# define inline 629 #else
630 #define ECB_PTRSIZE 4
631 #endif
383# endif 632#endif
633
634#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
635#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
636
637/* work around x32 idiocy by defining proper macros */
638#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
639 #if _ILP32
640 #define ECB_AMD64_X32 1
641 #else
642 #define ECB_AMD64 1
384#endif 643 #endif
644#endif
385 645
386#define expect_false(expr) expect ((expr) != 0, 0) 646/* many compilers define _GNUC_ to some versions but then only implement
387#define expect_true(expr) expect ((expr) != 0, 1) 647 * what their idiot authors think are the "more important" extensions,
388#define inline_size static inline 648 * causing enormous grief in return for some better fake benchmark numbers.
389 649 * or so.
390#if EV_MINIMAL 650 * we try to detect these and simply assume they are not gcc - if they have
391# define inline_speed static noinline 651 * an issue with that they should have done it right in the first place.
652 */
653#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
654 #define ECB_GCC_VERSION(major,minor) 0
392#else 655#else
656 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
657#endif
658
659#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
660
661#if __clang__ && defined __has_builtin
662 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
663#else
664 #define ECB_CLANG_BUILTIN(x) 0
665#endif
666
667#if __clang__ && defined __has_extension
668 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
669#else
670 #define ECB_CLANG_EXTENSION(x) 0
671#endif
672
673#define ECB_CPP (__cplusplus+0)
674#define ECB_CPP11 (__cplusplus >= 201103L)
675#define ECB_CPP14 (__cplusplus >= 201402L)
676#define ECB_CPP17 (__cplusplus >= 201703L)
677
678#if ECB_CPP
679 #define ECB_C 0
680 #define ECB_STDC_VERSION 0
681#else
682 #define ECB_C 1
683 #define ECB_STDC_VERSION __STDC_VERSION__
684#endif
685
686#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
687#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
688#define ECB_C17 (ECB_STDC_VERSION >= 201710L)
689
690#if ECB_CPP
691 #define ECB_EXTERN_C extern "C"
692 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
693 #define ECB_EXTERN_C_END }
694#else
695 #define ECB_EXTERN_C extern
696 #define ECB_EXTERN_C_BEG
697 #define ECB_EXTERN_C_END
698#endif
699
700/*****************************************************************************/
701
702/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
703/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
704
705#if ECB_NO_THREADS
706 #define ECB_NO_SMP 1
707#endif
708
709#if ECB_NO_SMP
710 #define ECB_MEMORY_FENCE do { } while (0)
711#endif
712
713/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
714#if __xlC__ && ECB_CPP
715 #include <builtins.h>
716#endif
717
718#if 1400 <= _MSC_VER
719 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
720#endif
721
722#ifndef ECB_MEMORY_FENCE
723 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
724 #define ECB_MEMORY_FENCE_RELAXED __asm__ __volatile__ ("" : : : "memory")
725 #if __i386 || __i386__
726 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
727 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
728 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
729 #elif ECB_GCC_AMD64
730 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
731 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
732 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
733 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
734 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
735 #elif defined __ARM_ARCH_2__ \
736 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
737 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
738 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
739 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
740 || defined __ARM_ARCH_5TEJ__
741 /* should not need any, unless running old code on newer cpu - arm doesn't support that */
742 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
743 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
744 || defined __ARM_ARCH_6T2__
745 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
746 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
747 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
748 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
749 #elif __aarch64__
750 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
751 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
752 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
753 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
754 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
755 #elif defined __s390__ || defined __s390x__
756 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
757 #elif defined __mips__
758 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
759 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
760 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
761 #elif defined __alpha__
762 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
763 #elif defined __hppa__
764 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
765 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
766 #elif defined __ia64__
767 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
768 #elif defined __m68k__
769 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
770 #elif defined __m88k__
771 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
772 #elif defined __sh__
773 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
774 #endif
775 #endif
776#endif
777
778#ifndef ECB_MEMORY_FENCE
779 #if ECB_GCC_VERSION(4,7)
780 /* see comment below (stdatomic.h) about the C11 memory model. */
781 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
782 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
783 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
784 #define ECB_MEMORY_FENCE_RELAXED __atomic_thread_fence (__ATOMIC_RELAXED)
785
786 #elif ECB_CLANG_EXTENSION(c_atomic)
787 /* see comment below (stdatomic.h) about the C11 memory model. */
788 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
789 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
790 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
791 #define ECB_MEMORY_FENCE_RELAXED __c11_atomic_thread_fence (__ATOMIC_RELAXED)
792
793 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
794 #define ECB_MEMORY_FENCE __sync_synchronize ()
795 #elif _MSC_VER >= 1500 /* VC++ 2008 */
796 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
797 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
798 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
799 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
800 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
801 #elif _MSC_VER >= 1400 /* VC++ 2005 */
802 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
803 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
804 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
805 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
806 #elif defined _WIN32
807 #include <WinNT.h>
808 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
809 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
810 #include <mbarrier.h>
811 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
812 #define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier ()
813 #define ECB_MEMORY_FENCE_RELEASE __machine_rel_barrier ()
814 #define ECB_MEMORY_FENCE_RELAXED __compiler_barrier ()
815 #elif __xlC__
816 #define ECB_MEMORY_FENCE __sync ()
817 #endif
818#endif
819
820#ifndef ECB_MEMORY_FENCE
821 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
822 /* we assume that these memory fences work on all variables/all memory accesses, */
823 /* not just C11 atomics and atomic accesses */
824 #include <stdatomic.h>
825 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
826 #define ECB_MEMORY_FENCE_ACQUIRE atomic_thread_fence (memory_order_acquire)
827 #define ECB_MEMORY_FENCE_RELEASE atomic_thread_fence (memory_order_release)
828 #endif
829#endif
830
831#ifndef ECB_MEMORY_FENCE
832 #if !ECB_AVOID_PTHREADS
833 /*
834 * if you get undefined symbol references to pthread_mutex_lock,
835 * or failure to find pthread.h, then you should implement
836 * the ECB_MEMORY_FENCE operations for your cpu/compiler
837 * OR provide pthread.h and link against the posix thread library
838 * of your system.
839 */
840 #include <pthread.h>
841 #define ECB_NEEDS_PTHREADS 1
842 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
843
844 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
845 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
846 #endif
847#endif
848
849#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
850 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
851#endif
852
853#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
854 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
855#endif
856
857#if !defined ECB_MEMORY_FENCE_RELAXED && defined ECB_MEMORY_FENCE
858 #define ECB_MEMORY_FENCE_RELAXED ECB_MEMORY_FENCE /* very heavy-handed */
859#endif
860
861/*****************************************************************************/
862
863#if ECB_CPP
864 #define ecb_inline static inline
865#elif ECB_GCC_VERSION(2,5)
866 #define ecb_inline static __inline__
867#elif ECB_C99
868 #define ecb_inline static inline
869#else
870 #define ecb_inline static
871#endif
872
873#if ECB_GCC_VERSION(3,3)
874 #define ecb_restrict __restrict__
875#elif ECB_C99
876 #define ecb_restrict restrict
877#else
878 #define ecb_restrict
879#endif
880
881typedef int ecb_bool;
882
883#define ECB_CONCAT_(a, b) a ## b
884#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
885#define ECB_STRINGIFY_(a) # a
886#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
887#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
888
889#define ecb_function_ ecb_inline
890
891#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
892 #define ecb_attribute(attrlist) __attribute__ (attrlist)
893#else
894 #define ecb_attribute(attrlist)
895#endif
896
897#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
898 #define ecb_is_constant(expr) __builtin_constant_p (expr)
899#else
900 /* possible C11 impl for integral types
901 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
902 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
903
904 #define ecb_is_constant(expr) 0
905#endif
906
907#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
908 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
909#else
910 #define ecb_expect(expr,value) (expr)
911#endif
912
913#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
914 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
915#else
916 #define ecb_prefetch(addr,rw,locality)
917#endif
918
919/* no emulation for ecb_decltype */
920#if ECB_CPP11
921 // older implementations might have problems with decltype(x)::type, work around it
922 template<class T> struct ecb_decltype_t { typedef T type; };
923 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
924#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
925 #define ecb_decltype(x) __typeof__ (x)
926#endif
927
928#if _MSC_VER >= 1300
929 #define ecb_deprecated __declspec (deprecated)
930#else
931 #define ecb_deprecated ecb_attribute ((__deprecated__))
932#endif
933
934#if _MSC_VER >= 1500
935 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
936#elif ECB_GCC_VERSION(4,5)
937 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
938#else
939 #define ecb_deprecated_message(msg) ecb_deprecated
940#endif
941
942#if _MSC_VER >= 1400
943 #define ecb_noinline __declspec (noinline)
944#else
945 #define ecb_noinline ecb_attribute ((__noinline__))
946#endif
947
948#define ecb_unused ecb_attribute ((__unused__))
949#define ecb_const ecb_attribute ((__const__))
950#define ecb_pure ecb_attribute ((__pure__))
951
952#if ECB_C11 || __IBMC_NORETURN
953 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
954 #define ecb_noreturn _Noreturn
955#elif ECB_CPP11
956 #define ecb_noreturn [[noreturn]]
957#elif _MSC_VER >= 1200
958 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
959 #define ecb_noreturn __declspec (noreturn)
960#else
961 #define ecb_noreturn ecb_attribute ((__noreturn__))
962#endif
963
964#if ECB_GCC_VERSION(4,3)
965 #define ecb_artificial ecb_attribute ((__artificial__))
966 #define ecb_hot ecb_attribute ((__hot__))
967 #define ecb_cold ecb_attribute ((__cold__))
968#else
969 #define ecb_artificial
970 #define ecb_hot
971 #define ecb_cold
972#endif
973
974/* put around conditional expressions if you are very sure that the */
975/* expression is mostly true or mostly false. note that these return */
976/* booleans, not the expression. */
977#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
978#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
979/* for compatibility to the rest of the world */
980#define ecb_likely(expr) ecb_expect_true (expr)
981#define ecb_unlikely(expr) ecb_expect_false (expr)
982
983/* count trailing zero bits and count # of one bits */
984#if ECB_GCC_VERSION(3,4) \
985 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
986 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
987 && ECB_CLANG_BUILTIN(__builtin_popcount))
988 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
989 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
990 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
991 #define ecb_ctz32(x) __builtin_ctz (x)
992 #define ecb_ctz64(x) __builtin_ctzll (x)
993 #define ecb_popcount32(x) __builtin_popcount (x)
994 /* no popcountll */
995#else
996 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
997 ecb_function_ ecb_const int
998 ecb_ctz32 (uint32_t x)
999 {
1000#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1001 unsigned long r;
1002 _BitScanForward (&r, x);
1003 return (int)r;
1004#else
1005 int r = 0;
1006
1007 x &= ~x + 1; /* this isolates the lowest bit */
1008
1009#if ECB_branchless_on_i386
1010 r += !!(x & 0xaaaaaaaa) << 0;
1011 r += !!(x & 0xcccccccc) << 1;
1012 r += !!(x & 0xf0f0f0f0) << 2;
1013 r += !!(x & 0xff00ff00) << 3;
1014 r += !!(x & 0xffff0000) << 4;
1015#else
1016 if (x & 0xaaaaaaaa) r += 1;
1017 if (x & 0xcccccccc) r += 2;
1018 if (x & 0xf0f0f0f0) r += 4;
1019 if (x & 0xff00ff00) r += 8;
1020 if (x & 0xffff0000) r += 16;
1021#endif
1022
1023 return r;
1024#endif
1025 }
1026
1027 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
1028 ecb_function_ ecb_const int
1029 ecb_ctz64 (uint64_t x)
1030 {
1031#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1032 unsigned long r;
1033 _BitScanForward64 (&r, x);
1034 return (int)r;
1035#else
1036 int shift = x & 0xffffffff ? 0 : 32;
1037 return ecb_ctz32 (x >> shift) + shift;
1038#endif
1039 }
1040
1041 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
1042 ecb_function_ ecb_const int
1043 ecb_popcount32 (uint32_t x)
1044 {
1045 x -= (x >> 1) & 0x55555555;
1046 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
1047 x = ((x >> 4) + x) & 0x0f0f0f0f;
1048 x *= 0x01010101;
1049
1050 return x >> 24;
1051 }
1052
1053 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
1054 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
1055 {
1056#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1057 unsigned long r;
1058 _BitScanReverse (&r, x);
1059 return (int)r;
1060#else
1061 int r = 0;
1062
1063 if (x >> 16) { x >>= 16; r += 16; }
1064 if (x >> 8) { x >>= 8; r += 8; }
1065 if (x >> 4) { x >>= 4; r += 4; }
1066 if (x >> 2) { x >>= 2; r += 2; }
1067 if (x >> 1) { r += 1; }
1068
1069 return r;
1070#endif
1071 }
1072
1073 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
1074 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
1075 {
1076#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1077 unsigned long r;
1078 _BitScanReverse64 (&r, x);
1079 return (int)r;
1080#else
1081 int r = 0;
1082
1083 if (x >> 32) { x >>= 32; r += 32; }
1084
1085 return r + ecb_ld32 (x);
1086#endif
1087 }
1088#endif
1089
1090ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
1091ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
1092ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
1093ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
1094
1095ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
1096ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
1097{
1098 return ( (x * 0x0802U & 0x22110U)
1099 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
1100}
1101
1102ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
1103ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
1104{
1105 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
1106 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
1107 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
1108 x = ( x >> 8 ) | ( x << 8);
1109
1110 return x;
1111}
1112
1113ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
1114ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
1115{
1116 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
1117 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
1118 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
1119 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
1120 x = ( x >> 16 ) | ( x << 16);
1121
1122 return x;
1123}
1124
1125/* popcount64 is only available on 64 bit cpus as gcc builtin */
1126/* so for this version we are lazy */
1127ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
1128ecb_function_ ecb_const int
1129ecb_popcount64 (uint64_t x)
1130{
1131 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
1132}
1133
1134ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
1135ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
1136ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
1137ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
1138ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
1139ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
1140ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
1141ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
1142
1143ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
1144ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
1145ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
1146ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
1147ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
1148ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
1149ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
1150ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
1151
1152#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1153 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1154 #define ecb_bswap16(x) __builtin_bswap16 (x)
1155 #else
1156 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1157 #endif
1158 #define ecb_bswap32(x) __builtin_bswap32 (x)
1159 #define ecb_bswap64(x) __builtin_bswap64 (x)
1160#elif _MSC_VER
1161 #include <stdlib.h>
1162 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1163 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1164 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
1165#else
1166 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
1167 ecb_function_ ecb_const uint16_t
1168 ecb_bswap16 (uint16_t x)
1169 {
1170 return ecb_rotl16 (x, 8);
1171 }
1172
1173 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
1174 ecb_function_ ecb_const uint32_t
1175 ecb_bswap32 (uint32_t x)
1176 {
1177 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
1178 }
1179
1180 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
1181 ecb_function_ ecb_const uint64_t
1182 ecb_bswap64 (uint64_t x)
1183 {
1184 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
1185 }
1186#endif
1187
1188#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
1189 #define ecb_unreachable() __builtin_unreachable ()
1190#else
1191 /* this seems to work fine, but gcc always emits a warning for it :/ */
1192 ecb_inline ecb_noreturn void ecb_unreachable (void);
1193 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
1194#endif
1195
1196/* try to tell the compiler that some condition is definitely true */
1197#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
1198
1199ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
1200ecb_inline ecb_const uint32_t
1201ecb_byteorder_helper (void)
1202{
1203 /* the union code still generates code under pressure in gcc, */
1204 /* but less than using pointers, and always seems to */
1205 /* successfully return a constant. */
1206 /* the reason why we have this horrible preprocessor mess */
1207 /* is to avoid it in all cases, at least on common architectures */
1208 /* or when using a recent enough gcc version (>= 4.6) */
1209#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1210 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1211 #define ECB_LITTLE_ENDIAN 1
1212 return 0x44332211;
1213#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1214 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1215 #define ECB_BIG_ENDIAN 1
1216 return 0x11223344;
1217#else
1218 union
1219 {
1220 uint8_t c[4];
1221 uint32_t u;
1222 } u = { 0x11, 0x22, 0x33, 0x44 };
1223 return u.u;
1224#endif
1225}
1226
1227ecb_inline ecb_const ecb_bool ecb_big_endian (void);
1228ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
1229ecb_inline ecb_const ecb_bool ecb_little_endian (void);
1230ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
1231
1232#if ECB_GCC_VERSION(3,0) || ECB_C99
1233 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1234#else
1235 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1236#endif
1237
1238#if ECB_CPP
1239 template<typename T>
1240 static inline T ecb_div_rd (T val, T div)
1241 {
1242 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1243 }
1244 template<typename T>
1245 static inline T ecb_div_ru (T val, T div)
1246 {
1247 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1248 }
1249#else
1250 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1251 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1252#endif
1253
1254#if ecb_cplusplus_does_not_suck
1255 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1256 template<typename T, int N>
1257 static inline int ecb_array_length (const T (&arr)[N])
1258 {
1259 return N;
1260 }
1261#else
1262 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1263#endif
1264
1265ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1266ecb_function_ ecb_const uint32_t
1267ecb_binary16_to_binary32 (uint32_t x)
1268{
1269 unsigned int s = (x & 0x8000) << (31 - 15);
1270 int e = (x >> 10) & 0x001f;
1271 unsigned int m = x & 0x03ff;
1272
1273 if (ecb_expect_false (e == 31))
1274 /* infinity or NaN */
1275 e = 255 - (127 - 15);
1276 else if (ecb_expect_false (!e))
1277 {
1278 if (ecb_expect_true (!m))
1279 /* zero, handled by code below by forcing e to 0 */
1280 e = 0 - (127 - 15);
1281 else
1282 {
1283 /* subnormal, renormalise */
1284 unsigned int s = 10 - ecb_ld32 (m);
1285
1286 m = (m << s) & 0x3ff; /* mask implicit bit */
1287 e -= s - 1;
1288 }
1289 }
1290
1291 /* e and m now are normalised, or zero, (or inf or nan) */
1292 e += 127 - 15;
1293
1294 return s | (e << 23) | (m << (23 - 10));
1295}
1296
1297ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1298ecb_function_ ecb_const uint16_t
1299ecb_binary32_to_binary16 (uint32_t x)
1300{
1301 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1302 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1303 unsigned int m = x & 0x007fffff;
1304
1305 x &= 0x7fffffff;
1306
1307 /* if it's within range of binary16 normals, use fast path */
1308 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1309 {
1310 /* mantissa round-to-even */
1311 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1312
1313 /* handle overflow */
1314 if (ecb_expect_false (m >= 0x00800000))
1315 {
1316 m >>= 1;
1317 e += 1;
1318 }
1319
1320 return s | (e << 10) | (m >> (23 - 10));
1321 }
1322
1323 /* handle large numbers and infinity */
1324 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1325 return s | 0x7c00;
1326
1327 /* handle zero, subnormals and small numbers */
1328 if (ecb_expect_true (x < 0x38800000))
1329 {
1330 /* zero */
1331 if (ecb_expect_true (!x))
1332 return s;
1333
1334 /* handle subnormals */
1335
1336 /* too small, will be zero */
1337 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1338 return s;
1339
1340 m |= 0x00800000; /* make implicit bit explicit */
1341
1342 /* very tricky - we need to round to the nearest e (+10) bit value */
1343 {
1344 unsigned int bits = 14 - e;
1345 unsigned int half = (1 << (bits - 1)) - 1;
1346 unsigned int even = (m >> bits) & 1;
1347
1348 /* if this overflows, we will end up with a normalised number */
1349 m = (m + half + even) >> bits;
1350 }
1351
1352 return s | m;
1353 }
1354
1355 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1356 m >>= 13;
1357
1358 return s | 0x7c00 | m | !m;
1359}
1360
1361/*******************************************************************************/
1362/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1363
1364/* basically, everything uses "ieee pure-endian" floating point numbers */
1365/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1366#if 0 \
1367 || __i386 || __i386__ \
1368 || ECB_GCC_AMD64 \
1369 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1370 || defined __s390__ || defined __s390x__ \
1371 || defined __mips__ \
1372 || defined __alpha__ \
1373 || defined __hppa__ \
1374 || defined __ia64__ \
1375 || defined __m68k__ \
1376 || defined __m88k__ \
1377 || defined __sh__ \
1378 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1379 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1380 || defined __aarch64__
1381 #define ECB_STDFP 1
1382 #include <string.h> /* for memcpy */
1383#else
1384 #define ECB_STDFP 0
1385#endif
1386
1387#ifndef ECB_NO_LIBM
1388
1389 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1390
1391 /* only the oldest of old doesn't have this one. solaris. */
1392 #ifdef INFINITY
1393 #define ECB_INFINITY INFINITY
1394 #else
1395 #define ECB_INFINITY HUGE_VAL
1396 #endif
1397
1398 #ifdef NAN
1399 #define ECB_NAN NAN
1400 #else
1401 #define ECB_NAN ECB_INFINITY
1402 #endif
1403
1404 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1405 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1406 #define ecb_frexpf(x,e) frexpf ((x), (e))
1407 #else
1408 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1409 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1410 #endif
1411
1412 /* convert a float to ieee single/binary32 */
1413 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1414 ecb_function_ ecb_const uint32_t
1415 ecb_float_to_binary32 (float x)
1416 {
1417 uint32_t r;
1418
1419 #if ECB_STDFP
1420 memcpy (&r, &x, 4);
1421 #else
1422 /* slow emulation, works for anything but -0 */
1423 uint32_t m;
1424 int e;
1425
1426 if (x == 0e0f ) return 0x00000000U;
1427 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1428 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1429 if (x != x ) return 0x7fbfffffU;
1430
1431 m = ecb_frexpf (x, &e) * 0x1000000U;
1432
1433 r = m & 0x80000000U;
1434
1435 if (r)
1436 m = -m;
1437
1438 if (e <= -126)
1439 {
1440 m &= 0xffffffU;
1441 m >>= (-125 - e);
1442 e = -126;
1443 }
1444
1445 r |= (e + 126) << 23;
1446 r |= m & 0x7fffffU;
1447 #endif
1448
1449 return r;
1450 }
1451
1452 /* converts an ieee single/binary32 to a float */
1453 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1454 ecb_function_ ecb_const float
1455 ecb_binary32_to_float (uint32_t x)
1456 {
1457 float r;
1458
1459 #if ECB_STDFP
1460 memcpy (&r, &x, 4);
1461 #else
1462 /* emulation, only works for normals and subnormals and +0 */
1463 int neg = x >> 31;
1464 int e = (x >> 23) & 0xffU;
1465
1466 x &= 0x7fffffU;
1467
1468 if (e)
1469 x |= 0x800000U;
1470 else
1471 e = 1;
1472
1473 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1474 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1475
1476 r = neg ? -r : r;
1477 #endif
1478
1479 return r;
1480 }
1481
1482 /* convert a double to ieee double/binary64 */
1483 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1484 ecb_function_ ecb_const uint64_t
1485 ecb_double_to_binary64 (double x)
1486 {
1487 uint64_t r;
1488
1489 #if ECB_STDFP
1490 memcpy (&r, &x, 8);
1491 #else
1492 /* slow emulation, works for anything but -0 */
1493 uint64_t m;
1494 int e;
1495
1496 if (x == 0e0 ) return 0x0000000000000000U;
1497 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1498 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1499 if (x != x ) return 0X7ff7ffffffffffffU;
1500
1501 m = frexp (x, &e) * 0x20000000000000U;
1502
1503 r = m & 0x8000000000000000;;
1504
1505 if (r)
1506 m = -m;
1507
1508 if (e <= -1022)
1509 {
1510 m &= 0x1fffffffffffffU;
1511 m >>= (-1021 - e);
1512 e = -1022;
1513 }
1514
1515 r |= ((uint64_t)(e + 1022)) << 52;
1516 r |= m & 0xfffffffffffffU;
1517 #endif
1518
1519 return r;
1520 }
1521
1522 /* converts an ieee double/binary64 to a double */
1523 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1524 ecb_function_ ecb_const double
1525 ecb_binary64_to_double (uint64_t x)
1526 {
1527 double r;
1528
1529 #if ECB_STDFP
1530 memcpy (&r, &x, 8);
1531 #else
1532 /* emulation, only works for normals and subnormals and +0 */
1533 int neg = x >> 63;
1534 int e = (x >> 52) & 0x7ffU;
1535
1536 x &= 0xfffffffffffffU;
1537
1538 if (e)
1539 x |= 0x10000000000000U;
1540 else
1541 e = 1;
1542
1543 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1544 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1545
1546 r = neg ? -r : r;
1547 #endif
1548
1549 return r;
1550 }
1551
1552 /* convert a float to ieee half/binary16 */
1553 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1554 ecb_function_ ecb_const uint16_t
1555 ecb_float_to_binary16 (float x)
1556 {
1557 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1558 }
1559
1560 /* convert an ieee half/binary16 to float */
1561 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1562 ecb_function_ ecb_const float
1563 ecb_binary16_to_float (uint16_t x)
1564 {
1565 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1566 }
1567
1568#endif
1569
1570#endif
1571
1572/* ECB.H END */
1573
1574#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1575/* if your architecture doesn't need memory fences, e.g. because it is
1576 * single-cpu/core, or if you use libev in a project that doesn't use libev
1577 * from multiple threads, then you can define ECB_NO_THREADS when compiling
1578 * libev, in which cases the memory fences become nops.
1579 * alternatively, you can remove this #error and link against libpthread,
1580 * which will then provide the memory fences.
1581 */
1582# error "memory fences not defined for your architecture, please report"
1583#endif
1584
1585#ifndef ECB_MEMORY_FENCE
1586# define ECB_MEMORY_FENCE do { } while (0)
1587# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1588# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1589#endif
1590
1591#define inline_size ecb_inline
1592
1593#if EV_FEATURE_CODE
393# define inline_speed static inline 1594# define inline_speed ecb_inline
1595#else
1596# define inline_speed ecb_noinline static
394#endif 1597#endif
1598
1599/*****************************************************************************/
1600/* raw syscall wrappers */
1601
1602#if EV_NEED_SYSCALL
1603
1604#include <sys/syscall.h>
1605
1606/*
1607 * define some syscall wrappers for common architectures
1608 * this is mostly for nice looks during debugging, not performance.
1609 * our syscalls return < 0, not == -1, on error. which is good
1610 * enough for linux aio.
1611 * TODO: arm is also common nowadays, maybe even mips and x86
1612 * TODO: after implementing this, it suddenly looks like overkill, but its hard to remove...
1613 */
1614#if __GNUC__ && __linux && ECB_AMD64 && !defined __OPTIMIZE_SIZE__
1615 /* the costly errno access probably kills this for size optimisation */
1616
1617 #define ev_syscall(nr,narg,arg1,arg2,arg3,arg4,arg5,arg6) \
1618 ({ \
1619 long res; \
1620 register unsigned long r6 __asm__ ("r9" ); \
1621 register unsigned long r5 __asm__ ("r8" ); \
1622 register unsigned long r4 __asm__ ("r10"); \
1623 register unsigned long r3 __asm__ ("rdx"); \
1624 register unsigned long r2 __asm__ ("rsi"); \
1625 register unsigned long r1 __asm__ ("rdi"); \
1626 if (narg >= 6) r6 = (unsigned long)(arg6); \
1627 if (narg >= 5) r5 = (unsigned long)(arg5); \
1628 if (narg >= 4) r4 = (unsigned long)(arg4); \
1629 if (narg >= 3) r3 = (unsigned long)(arg3); \
1630 if (narg >= 2) r2 = (unsigned long)(arg2); \
1631 if (narg >= 1) r1 = (unsigned long)(arg1); \
1632 __asm__ __volatile__ ( \
1633 "syscall\n\t" \
1634 : "=a" (res) \
1635 : "0" (nr), "r" (r1), "r" (r2), "r" (r3), "r" (r4), "r" (r5) \
1636 : "cc", "r11", "cx", "memory"); \
1637 errno = -res; \
1638 res; \
1639 })
1640
1641#endif
1642
1643#ifdef ev_syscall
1644 #define ev_syscall0(nr) ev_syscall (nr, 0, 0, 0, 0, 0, 0, 0)
1645 #define ev_syscall1(nr,arg1) ev_syscall (nr, 1, arg1, 0, 0, 0, 0, 0)
1646 #define ev_syscall2(nr,arg1,arg2) ev_syscall (nr, 2, arg1, arg2, 0, 0, 0, 0)
1647 #define ev_syscall3(nr,arg1,arg2,arg3) ev_syscall (nr, 3, arg1, arg2, arg3, 0, 0, 0)
1648 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) ev_syscall (nr, 3, arg1, arg2, arg3, arg4, 0, 0)
1649 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) ev_syscall (nr, 5, arg1, arg2, arg3, arg4, arg5, 0)
1650 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) ev_syscall (nr, 6, arg1, arg2, arg3, arg4, arg5,arg6)
1651#else
1652 #define ev_syscall0(nr) syscall (nr)
1653 #define ev_syscall1(nr,arg1) syscall (nr, arg1)
1654 #define ev_syscall2(nr,arg1,arg2) syscall (nr, arg1, arg2)
1655 #define ev_syscall3(nr,arg1,arg2,arg3) syscall (nr, arg1, arg2, arg3)
1656 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) syscall (nr, arg1, arg2, arg3, arg4)
1657 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) syscall (nr, arg1, arg2, arg3, arg4, arg5)
1658 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) syscall (nr, arg1, arg2, arg3, arg4, arg5,arg6)
1659#endif
1660
1661#endif
1662
1663/*****************************************************************************/
395 1664
396#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1665#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
397 1666
398#if EV_MINPRI == EV_MAXPRI 1667#if EV_MINPRI == EV_MAXPRI
399# define ABSPRI(w) (((W)w), 0) 1668# define ABSPRI(w) (((W)w), 0)
400#else 1669#else
401# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1670# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
402#endif 1671#endif
403 1672
404#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1673#define EMPTY /* required for microsofts broken pseudo-c compiler */
405#define EMPTY2(a,b) /* used to suppress some warnings */
406 1674
407typedef ev_watcher *W; 1675typedef ev_watcher *W;
408typedef ev_watcher_list *WL; 1676typedef ev_watcher_list *WL;
409typedef ev_watcher_time *WT; 1677typedef ev_watcher_time *WT;
410 1678
411#define ev_active(w) ((W)(w))->active 1679#define ev_active(w) ((W)(w))->active
412#define ev_at(w) ((WT)(w))->at 1680#define ev_at(w) ((WT)(w))->at
413 1681
414#if EV_USE_REALTIME 1682#if EV_USE_REALTIME
415/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 1683/* 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 */ 1684/* giving it a reasonably high chance of working on typical architectures */
417static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 1685static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
418#endif 1686#endif
419 1687
420#if EV_USE_MONOTONIC 1688#if EV_USE_MONOTONIC
421static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 1689static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
422#endif 1690#endif
423 1691
1692#ifndef EV_FD_TO_WIN32_HANDLE
1693# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
1694#endif
1695#ifndef EV_WIN32_HANDLE_TO_FD
1696# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
1697#endif
1698#ifndef EV_WIN32_CLOSE_FD
1699# define EV_WIN32_CLOSE_FD(fd) close (fd)
1700#endif
1701
424#ifdef _WIN32 1702#ifdef _WIN32
425# include "ev_win32.c" 1703# include "ev_win32.c"
426#endif 1704#endif
427 1705
428/*****************************************************************************/ 1706/*****************************************************************************/
429 1707
1708#if EV_USE_LINUXAIO
1709# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
1710#endif
1711
1712/* define a suitable floor function (only used by periodics atm) */
1713
1714#if EV_USE_FLOOR
1715# include <math.h>
1716# define ev_floor(v) floor (v)
1717#else
1718
1719#include <float.h>
1720
1721/* a floor() replacement function, should be independent of ev_tstamp type */
1722ecb_noinline
1723static ev_tstamp
1724ev_floor (ev_tstamp v)
1725{
1726 /* the choice of shift factor is not terribly important */
1727#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1728 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1729#else
1730 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1731#endif
1732
1733 /* special treatment for negative arguments */
1734 if (ecb_expect_false (v < 0.))
1735 {
1736 ev_tstamp f = -ev_floor (-v);
1737
1738 return f - (f == v ? 0 : 1);
1739 }
1740
1741 /* argument too large for an unsigned long? then reduce it */
1742 if (ecb_expect_false (v >= shift))
1743 {
1744 ev_tstamp f;
1745
1746 if (v == v - 1.)
1747 return v; /* very large numbers are assumed to be integer */
1748
1749 f = shift * ev_floor (v * (1. / shift));
1750 return f + ev_floor (v - f);
1751 }
1752
1753 /* fits into an unsigned long */
1754 return (unsigned long)v;
1755}
1756
1757#endif
1758
1759/*****************************************************************************/
1760
1761#ifdef __linux
1762# include <sys/utsname.h>
1763#endif
1764
1765ecb_noinline ecb_cold
1766static unsigned int
1767ev_linux_version (void)
1768{
1769#ifdef __linux
1770 unsigned int v = 0;
1771 struct utsname buf;
1772 int i;
1773 char *p = buf.release;
1774
1775 if (uname (&buf))
1776 return 0;
1777
1778 for (i = 3+1; --i; )
1779 {
1780 unsigned int c = 0;
1781
1782 for (;;)
1783 {
1784 if (*p >= '0' && *p <= '9')
1785 c = c * 10 + *p++ - '0';
1786 else
1787 {
1788 p += *p == '.';
1789 break;
1790 }
1791 }
1792
1793 v = (v << 8) | c;
1794 }
1795
1796 return v;
1797#else
1798 return 0;
1799#endif
1800}
1801
1802/*****************************************************************************/
1803
1804#if EV_AVOID_STDIO
1805ecb_noinline ecb_cold
1806static void
1807ev_printerr (const char *msg)
1808{
1809 write (STDERR_FILENO, msg, strlen (msg));
1810}
1811#endif
1812
430static void (*syserr_cb)(const char *msg); 1813static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
431 1814
1815ecb_cold
432void 1816void
433ev_set_syserr_cb (void (*cb)(const char *msg)) 1817ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
434{ 1818{
435 syserr_cb = cb; 1819 syserr_cb = cb;
436} 1820}
437 1821
438static void noinline 1822ecb_noinline ecb_cold
1823static void
439ev_syserr (const char *msg) 1824ev_syserr (const char *msg)
440{ 1825{
441 if (!msg) 1826 if (!msg)
442 msg = "(libev) system error"; 1827 msg = "(libev) system error";
443 1828
444 if (syserr_cb) 1829 if (syserr_cb)
445 syserr_cb (msg); 1830 syserr_cb (msg);
446 else 1831 else
447 { 1832 {
1833#if EV_AVOID_STDIO
1834 ev_printerr (msg);
1835 ev_printerr (": ");
1836 ev_printerr (strerror (errno));
1837 ev_printerr ("\n");
1838#else
448 perror (msg); 1839 perror (msg);
1840#endif
449 abort (); 1841 abort ();
450 } 1842 }
451} 1843}
452 1844
453static void * 1845static void *
454ev_realloc_emul (void *ptr, long size) 1846ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
455{ 1847{
456 /* some systems, notably openbsd and darwin, fail to properly 1848 /* some systems, notably openbsd and darwin, fail to properly
457 * implement realloc (x, 0) (as required by both ansi c-98 and 1849 * implement realloc (x, 0) (as required by both ansi c-89 and
458 * the single unix specification, so work around them here. 1850 * the single unix specification, so work around them here.
1851 * recently, also (at least) fedora and debian started breaking it,
1852 * despite documenting it otherwise.
459 */ 1853 */
460 1854
461 if (size) 1855 if (size)
462 return realloc (ptr, size); 1856 return realloc (ptr, size);
463 1857
464 free (ptr); 1858 free (ptr);
465 return 0; 1859 return 0;
466} 1860}
467 1861
468static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1862static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
469 1863
1864ecb_cold
470void 1865void
471ev_set_allocator (void *(*cb)(void *ptr, long size)) 1866ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
472{ 1867{
473 alloc = cb; 1868 alloc = cb;
474} 1869}
475 1870
476inline_speed void * 1871inline_speed void *
… …
478{ 1873{
479 ptr = alloc (ptr, size); 1874 ptr = alloc (ptr, size);
480 1875
481 if (!ptr && size) 1876 if (!ptr && size)
482 { 1877 {
1878#if EV_AVOID_STDIO
1879 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1880#else
483 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1881 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1882#endif
484 abort (); 1883 abort ();
485 } 1884 }
486 1885
487 return ptr; 1886 return ptr;
488} 1887}
… …
499typedef struct 1898typedef struct
500{ 1899{
501 WL head; 1900 WL head;
502 unsigned char events; /* the events watched for */ 1901 unsigned char events; /* the events watched for */
503 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */ 1902 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
504 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1903 unsigned char emask; /* some backends store the actual kernel mask in here */
505 unsigned char unused; 1904 unsigned char eflags; /* flags field for use by backends */
506#if EV_USE_EPOLL 1905#if EV_USE_EPOLL
507 unsigned int egen; /* generation counter to counter epoll bugs */ 1906 unsigned int egen; /* generation counter to counter epoll bugs */
508#endif 1907#endif
509#if EV_SELECT_IS_WINSOCKET 1908#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
510 SOCKET handle; 1909 SOCKET handle;
1910#endif
1911#if EV_USE_IOCP
1912 OVERLAPPED or, ow;
511#endif 1913#endif
512} ANFD; 1914} ANFD;
513 1915
514/* stores the pending event set for a given watcher */ 1916/* stores the pending event set for a given watcher */
515typedef struct 1917typedef struct
… …
557 #undef VAR 1959 #undef VAR
558 }; 1960 };
559 #include "ev_wrap.h" 1961 #include "ev_wrap.h"
560 1962
561 static struct ev_loop default_loop_struct; 1963 static struct ev_loop default_loop_struct;
562 struct ev_loop *ev_default_loop_ptr; 1964 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
563 1965
564#else 1966#else
565 1967
566 ev_tstamp ev_rt_now; 1968 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
567 #define VAR(name,decl) static decl; 1969 #define VAR(name,decl) static decl;
568 #include "ev_vars.h" 1970 #include "ev_vars.h"
569 #undef VAR 1971 #undef VAR
570 1972
571 static int ev_default_loop_ptr; 1973 static int ev_default_loop_ptr;
572 1974
573#endif 1975#endif
574 1976
575#if EV_MINIMAL < 2 1977#if EV_FEATURE_API
576# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 1978# define EV_RELEASE_CB if (ecb_expect_false (release_cb)) release_cb (EV_A)
577# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 1979# define EV_ACQUIRE_CB if (ecb_expect_false (acquire_cb)) acquire_cb (EV_A)
578# define EV_INVOKE_PENDING invoke_cb (EV_A) 1980# define EV_INVOKE_PENDING invoke_cb (EV_A)
579#else 1981#else
580# define EV_RELEASE_CB (void)0 1982# define EV_RELEASE_CB (void)0
581# define EV_ACQUIRE_CB (void)0 1983# define EV_ACQUIRE_CB (void)0
582# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1984# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
583#endif 1985#endif
584 1986
585#define EVUNLOOP_RECURSE 0x80 1987#define EVBREAK_RECURSE 0x80
586 1988
587/*****************************************************************************/ 1989/*****************************************************************************/
588 1990
589#ifndef EV_HAVE_EV_TIME 1991#ifndef EV_HAVE_EV_TIME
590ev_tstamp 1992ev_tstamp
591ev_time (void) 1993ev_time (void) EV_NOEXCEPT
592{ 1994{
593#if EV_USE_REALTIME 1995#if EV_USE_REALTIME
594 if (expect_true (have_realtime)) 1996 if (ecb_expect_true (have_realtime))
595 { 1997 {
596 struct timespec ts; 1998 struct timespec ts;
597 clock_gettime (CLOCK_REALTIME, &ts); 1999 clock_gettime (CLOCK_REALTIME, &ts);
598 return ts.tv_sec + ts.tv_nsec * 1e-9; 2000 return EV_TS_GET (ts);
599 } 2001 }
600#endif 2002#endif
601 2003
602 struct timeval tv; 2004 struct timeval tv;
603 gettimeofday (&tv, 0); 2005 gettimeofday (&tv, 0);
604 return tv.tv_sec + tv.tv_usec * 1e-6; 2006 return EV_TV_GET (tv);
605} 2007}
606#endif 2008#endif
607 2009
608inline_size ev_tstamp 2010inline_size ev_tstamp
609get_clock (void) 2011get_clock (void)
610{ 2012{
611#if EV_USE_MONOTONIC 2013#if EV_USE_MONOTONIC
612 if (expect_true (have_monotonic)) 2014 if (ecb_expect_true (have_monotonic))
613 { 2015 {
614 struct timespec ts; 2016 struct timespec ts;
615 clock_gettime (CLOCK_MONOTONIC, &ts); 2017 clock_gettime (CLOCK_MONOTONIC, &ts);
616 return ts.tv_sec + ts.tv_nsec * 1e-9; 2018 return EV_TS_GET (ts);
617 } 2019 }
618#endif 2020#endif
619 2021
620 return ev_time (); 2022 return ev_time ();
621} 2023}
622 2024
623#if EV_MULTIPLICITY 2025#if EV_MULTIPLICITY
624ev_tstamp 2026ev_tstamp
625ev_now (EV_P) 2027ev_now (EV_P) EV_NOEXCEPT
626{ 2028{
627 return ev_rt_now; 2029 return ev_rt_now;
628} 2030}
629#endif 2031#endif
630 2032
631void 2033void
632ev_sleep (ev_tstamp delay) 2034ev_sleep (ev_tstamp delay) EV_NOEXCEPT
633{ 2035{
634 if (delay > 0.) 2036 if (delay > 0.)
635 { 2037 {
636#if EV_USE_NANOSLEEP 2038#if EV_USE_NANOSLEEP
637 struct timespec ts; 2039 struct timespec ts;
638 2040
639 ts.tv_sec = (time_t)delay; 2041 EV_TS_SET (ts, delay);
640 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
641
642 nanosleep (&ts, 0); 2042 nanosleep (&ts, 0);
643#elif defined(_WIN32) 2043#elif defined _WIN32
2044 /* maybe this should round up, as ms is very low resolution */
2045 /* compared to select (µs) or nanosleep (ns) */
644 Sleep ((unsigned long)(delay * 1e3)); 2046 Sleep ((unsigned long)(delay * 1e3));
645#else 2047#else
646 struct timeval tv; 2048 struct timeval tv;
647 2049
648 tv.tv_sec = (time_t)delay;
649 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
650
651 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 2050 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
652 /* somehting not guaranteed by newer posix versions, but guaranteed */ 2051 /* something not guaranteed by newer posix versions, but guaranteed */
653 /* by older ones */ 2052 /* by older ones */
2053 EV_TV_SET (tv, delay);
654 select (0, 0, 0, 0, &tv); 2054 select (0, 0, 0, 0, &tv);
655#endif 2055#endif
656 } 2056 }
657} 2057}
658 2058
659/*****************************************************************************/ 2059/*****************************************************************************/
660 2060
661#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 2061#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
662 2062
663/* find a suitable new size for the given array, */ 2063/* find a suitable new size for the given array, */
664/* hopefully by rounding to a ncie-to-malloc size */ 2064/* hopefully by rounding to a nice-to-malloc size */
665inline_size int 2065inline_size int
666array_nextsize (int elem, int cur, int cnt) 2066array_nextsize (int elem, int cur, int cnt)
667{ 2067{
668 int ncur = cur + 1; 2068 int ncur = cur + 1;
669 2069
670 do 2070 do
671 ncur <<= 1; 2071 ncur <<= 1;
672 while (cnt > ncur); 2072 while (cnt > ncur);
673 2073
674 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 2074 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
675 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 2075 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
676 { 2076 {
677 ncur *= elem; 2077 ncur *= elem;
678 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 2078 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
679 ncur = ncur - sizeof (void *) * 4; 2079 ncur = ncur - sizeof (void *) * 4;
… …
681 } 2081 }
682 2082
683 return ncur; 2083 return ncur;
684} 2084}
685 2085
686static noinline void * 2086ecb_noinline ecb_cold
2087static void *
687array_realloc (int elem, void *base, int *cur, int cnt) 2088array_realloc (int elem, void *base, int *cur, int cnt)
688{ 2089{
689 *cur = array_nextsize (elem, *cur, cnt); 2090 *cur = array_nextsize (elem, *cur, cnt);
690 return ev_realloc (base, elem * *cur); 2091 return ev_realloc (base, elem * *cur);
691} 2092}
692 2093
2094#define array_needsize_noinit(base,offset,count)
2095
693#define array_init_zero(base,count) \ 2096#define array_needsize_zerofill(base,offset,count) \
694 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 2097 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
695 2098
696#define array_needsize(type,base,cur,cnt,init) \ 2099#define array_needsize(type,base,cur,cnt,init) \
697 if (expect_false ((cnt) > (cur))) \ 2100 if (ecb_expect_false ((cnt) > (cur))) \
698 { \ 2101 { \
699 int ocur_ = (cur); \ 2102 ecb_unused int ocur_ = (cur); \
700 (base) = (type *)array_realloc \ 2103 (base) = (type *)array_realloc \
701 (sizeof (type), (base), &(cur), (cnt)); \ 2104 (sizeof (type), (base), &(cur), (cnt)); \
702 init ((base) + (ocur_), (cur) - ocur_); \ 2105 init ((base), ocur_, ((cur) - ocur_)); \
703 } 2106 }
704 2107
705#if 0 2108#if 0
706#define array_slim(type,stem) \ 2109#define array_slim(type,stem) \
707 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2110 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
… …
716 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 2119 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
717 2120
718/*****************************************************************************/ 2121/*****************************************************************************/
719 2122
720/* dummy callback for pending events */ 2123/* dummy callback for pending events */
721static void noinline 2124ecb_noinline
2125static void
722pendingcb (EV_P_ ev_prepare *w, int revents) 2126pendingcb (EV_P_ ev_prepare *w, int revents)
723{ 2127{
724} 2128}
725 2129
726void noinline 2130ecb_noinline
2131void
727ev_feed_event (EV_P_ void *w, int revents) 2132ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
728{ 2133{
729 W w_ = (W)w; 2134 W w_ = (W)w;
730 int pri = ABSPRI (w_); 2135 int pri = ABSPRI (w_);
731 2136
732 if (expect_false (w_->pending)) 2137 if (ecb_expect_false (w_->pending))
733 pendings [pri][w_->pending - 1].events |= revents; 2138 pendings [pri][w_->pending - 1].events |= revents;
734 else 2139 else
735 { 2140 {
736 w_->pending = ++pendingcnt [pri]; 2141 w_->pending = ++pendingcnt [pri];
737 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2142 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
738 pendings [pri][w_->pending - 1].w = w_; 2143 pendings [pri][w_->pending - 1].w = w_;
739 pendings [pri][w_->pending - 1].events = revents; 2144 pendings [pri][w_->pending - 1].events = revents;
740 } 2145 }
2146
2147 pendingpri = NUMPRI - 1;
741} 2148}
742 2149
743inline_speed void 2150inline_speed void
744feed_reverse (EV_P_ W w) 2151feed_reverse (EV_P_ W w)
745{ 2152{
746 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2153 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
747 rfeeds [rfeedcnt++] = w; 2154 rfeeds [rfeedcnt++] = w;
748} 2155}
749 2156
750inline_size void 2157inline_size void
751feed_reverse_done (EV_P_ int revents) 2158feed_reverse_done (EV_P_ int revents)
… …
765} 2172}
766 2173
767/*****************************************************************************/ 2174/*****************************************************************************/
768 2175
769inline_speed void 2176inline_speed void
770fd_event_nc (EV_P_ int fd, int revents) 2177fd_event_nocheck (EV_P_ int fd, int revents)
771{ 2178{
772 ANFD *anfd = anfds + fd; 2179 ANFD *anfd = anfds + fd;
773 ev_io *w; 2180 ev_io *w;
774 2181
775 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2182 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
786inline_speed void 2193inline_speed void
787fd_event (EV_P_ int fd, int revents) 2194fd_event (EV_P_ int fd, int revents)
788{ 2195{
789 ANFD *anfd = anfds + fd; 2196 ANFD *anfd = anfds + fd;
790 2197
791 if (expect_true (!anfd->reify)) 2198 if (ecb_expect_true (!anfd->reify))
792 fd_event_nc (EV_A_ fd, revents); 2199 fd_event_nocheck (EV_A_ fd, revents);
793} 2200}
794 2201
795void 2202void
796ev_feed_fd_event (EV_P_ int fd, int revents) 2203ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
797{ 2204{
798 if (fd >= 0 && fd < anfdmax) 2205 if (fd >= 0 && fd < anfdmax)
799 fd_event_nc (EV_A_ fd, revents); 2206 fd_event_nocheck (EV_A_ fd, revents);
800} 2207}
801 2208
802/* make sure the external fd watch events are in-sync */ 2209/* make sure the external fd watch events are in-sync */
803/* with the kernel/libev internal state */ 2210/* with the kernel/libev internal state */
804inline_size void 2211inline_size void
805fd_reify (EV_P) 2212fd_reify (EV_P)
806{ 2213{
807 int i; 2214 int i;
808 2215
2216#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
2217 for (i = 0; i < fdchangecnt; ++i)
2218 {
2219 int fd = fdchanges [i];
2220 ANFD *anfd = anfds + fd;
2221
2222 if (anfd->reify & EV__IOFDSET && anfd->head)
2223 {
2224 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
2225
2226 if (handle != anfd->handle)
2227 {
2228 unsigned long arg;
2229
2230 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
2231
2232 /* handle changed, but fd didn't - we need to do it in two steps */
2233 backend_modify (EV_A_ fd, anfd->events, 0);
2234 anfd->events = 0;
2235 anfd->handle = handle;
2236 }
2237 }
2238 }
2239#endif
2240
809 for (i = 0; i < fdchangecnt; ++i) 2241 for (i = 0; i < fdchangecnt; ++i)
810 { 2242 {
811 int fd = fdchanges [i]; 2243 int fd = fdchanges [i];
812 ANFD *anfd = anfds + fd; 2244 ANFD *anfd = anfds + fd;
813 ev_io *w; 2245 ev_io *w;
814 2246
815 unsigned char events = 0; 2247 unsigned char o_events = anfd->events;
2248 unsigned char o_reify = anfd->reify;
816 2249
817 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2250 anfd->reify = 0;
818 events |= (unsigned char)w->events;
819 2251
820#if EV_SELECT_IS_WINSOCKET 2252 /*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
821 if (events)
822 { 2253 {
823 unsigned long arg; 2254 anfd->events = 0;
824 #ifdef EV_FD_TO_WIN32_HANDLE 2255
825 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 2256 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
826 #else 2257 anfd->events |= (unsigned char)w->events;
827 anfd->handle = _get_osfhandle (fd); 2258
828 #endif 2259 if (o_events != anfd->events)
829 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 2260 o_reify = EV__IOFDSET; /* actually |= */
830 } 2261 }
831#endif
832 2262
833 { 2263 if (o_reify & EV__IOFDSET)
834 unsigned char o_events = anfd->events;
835 unsigned char o_reify = anfd->reify;
836
837 anfd->reify = 0;
838 anfd->events = events;
839
840 if (o_events != events || o_reify & EV__IOFDSET)
841 backend_modify (EV_A_ fd, o_events, events); 2264 backend_modify (EV_A_ fd, o_events, anfd->events);
842 }
843 } 2265 }
844 2266
845 fdchangecnt = 0; 2267 fdchangecnt = 0;
846} 2268}
847 2269
848/* something about the given fd changed */ 2270/* something about the given fd changed */
849inline_size void 2271inline_size
2272void
850fd_change (EV_P_ int fd, int flags) 2273fd_change (EV_P_ int fd, int flags)
851{ 2274{
852 unsigned char reify = anfds [fd].reify; 2275 unsigned char reify = anfds [fd].reify;
853 anfds [fd].reify |= flags; 2276 anfds [fd].reify |= flags;
854 2277
855 if (expect_true (!reify)) 2278 if (ecb_expect_true (!reify))
856 { 2279 {
857 ++fdchangecnt; 2280 ++fdchangecnt;
858 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2281 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
859 fdchanges [fdchangecnt - 1] = fd; 2282 fdchanges [fdchangecnt - 1] = fd;
860 } 2283 }
861} 2284}
862 2285
863/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2286/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
864inline_speed void 2287inline_speed ecb_cold void
865fd_kill (EV_P_ int fd) 2288fd_kill (EV_P_ int fd)
866{ 2289{
867 ev_io *w; 2290 ev_io *w;
868 2291
869 while ((w = (ev_io *)anfds [fd].head)) 2292 while ((w = (ev_io *)anfds [fd].head))
… …
871 ev_io_stop (EV_A_ w); 2294 ev_io_stop (EV_A_ w);
872 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2295 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
873 } 2296 }
874} 2297}
875 2298
876/* check whether the given fd is atcually valid, for error recovery */ 2299/* check whether the given fd is actually valid, for error recovery */
877inline_size int 2300inline_size ecb_cold int
878fd_valid (int fd) 2301fd_valid (int fd)
879{ 2302{
880#ifdef _WIN32 2303#ifdef _WIN32
881 return _get_osfhandle (fd) != -1; 2304 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
882#else 2305#else
883 return fcntl (fd, F_GETFD) != -1; 2306 return fcntl (fd, F_GETFD) != -1;
884#endif 2307#endif
885} 2308}
886 2309
887/* called on EBADF to verify fds */ 2310/* called on EBADF to verify fds */
888static void noinline 2311ecb_noinline ecb_cold
2312static void
889fd_ebadf (EV_P) 2313fd_ebadf (EV_P)
890{ 2314{
891 int fd; 2315 int fd;
892 2316
893 for (fd = 0; fd < anfdmax; ++fd) 2317 for (fd = 0; fd < anfdmax; ++fd)
… …
895 if (!fd_valid (fd) && errno == EBADF) 2319 if (!fd_valid (fd) && errno == EBADF)
896 fd_kill (EV_A_ fd); 2320 fd_kill (EV_A_ fd);
897} 2321}
898 2322
899/* called on ENOMEM in select/poll to kill some fds and retry */ 2323/* called on ENOMEM in select/poll to kill some fds and retry */
900static void noinline 2324ecb_noinline ecb_cold
2325static void
901fd_enomem (EV_P) 2326fd_enomem (EV_P)
902{ 2327{
903 int fd; 2328 int fd;
904 2329
905 for (fd = anfdmax; fd--; ) 2330 for (fd = anfdmax; fd--; )
906 if (anfds [fd].events) 2331 if (anfds [fd].events)
907 { 2332 {
908 fd_kill (EV_A_ fd); 2333 fd_kill (EV_A_ fd);
909 return; 2334 break;
910 } 2335 }
911} 2336}
912 2337
913/* usually called after fork if backend needs to re-arm all fds from scratch */ 2338/* usually called after fork if backend needs to re-arm all fds from scratch */
914static void noinline 2339ecb_noinline
2340static void
915fd_rearm_all (EV_P) 2341fd_rearm_all (EV_P)
916{ 2342{
917 int fd; 2343 int fd;
918 2344
919 for (fd = 0; fd < anfdmax; ++fd) 2345 for (fd = 0; fd < anfdmax; ++fd)
… …
923 anfds [fd].emask = 0; 2349 anfds [fd].emask = 0;
924 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); 2350 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
925 } 2351 }
926} 2352}
927 2353
2354/* used to prepare libev internal fd's */
2355/* this is not fork-safe */
2356inline_speed void
2357fd_intern (int fd)
2358{
2359#ifdef _WIN32
2360 unsigned long arg = 1;
2361 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
2362#else
2363 fcntl (fd, F_SETFD, FD_CLOEXEC);
2364 fcntl (fd, F_SETFL, O_NONBLOCK);
2365#endif
2366}
2367
928/*****************************************************************************/ 2368/*****************************************************************************/
929 2369
930/* 2370/*
931 * the heap functions want a real array index. array index 0 uis guaranteed to not 2371 * the heap functions want a real array index. array index 0 is guaranteed to not
932 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 2372 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
933 * the branching factor of the d-tree. 2373 * the branching factor of the d-tree.
934 */ 2374 */
935 2375
936/* 2376/*
… …
958 ev_tstamp minat; 2398 ev_tstamp minat;
959 ANHE *minpos; 2399 ANHE *minpos;
960 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; 2400 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
961 2401
962 /* find minimum child */ 2402 /* find minimum child */
963 if (expect_true (pos + DHEAP - 1 < E)) 2403 if (ecb_expect_true (pos + DHEAP - 1 < E))
964 { 2404 {
965 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2405 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
966 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2406 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
967 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2407 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
968 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2408 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
… …
1004 2444
1005 for (;;) 2445 for (;;)
1006 { 2446 {
1007 int c = k << 1; 2447 int c = k << 1;
1008 2448
1009 if (c > N + HEAP0 - 1) 2449 if (c >= N + HEAP0)
1010 break; 2450 break;
1011 2451
1012 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 2452 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
1013 ? 1 : 0; 2453 ? 1 : 0;
1014 2454
… …
1050 2490
1051/* move an element suitably so it is in a correct place */ 2491/* move an element suitably so it is in a correct place */
1052inline_size void 2492inline_size void
1053adjustheap (ANHE *heap, int N, int k) 2493adjustheap (ANHE *heap, int N, int k)
1054{ 2494{
1055 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 2495 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1056 upheap (heap, k); 2496 upheap (heap, k);
1057 else 2497 else
1058 downheap (heap, N, k); 2498 downheap (heap, N, k);
1059} 2499}
1060 2500
… …
1073/*****************************************************************************/ 2513/*****************************************************************************/
1074 2514
1075/* associate signal watchers to a signal signal */ 2515/* associate signal watchers to a signal signal */
1076typedef struct 2516typedef struct
1077{ 2517{
2518 EV_ATOMIC_T pending;
2519#if EV_MULTIPLICITY
2520 EV_P;
2521#endif
1078 WL head; 2522 WL head;
1079 EV_ATOMIC_T gotsig;
1080} ANSIG; 2523} ANSIG;
1081 2524
1082static ANSIG *signals; 2525static ANSIG signals [EV_NSIG - 1];
1083static int signalmax;
1084
1085static EV_ATOMIC_T gotsig;
1086 2526
1087/*****************************************************************************/ 2527/*****************************************************************************/
1088 2528
1089/* used to prepare libev internal fd's */ 2529#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1090/* this is not fork-safe */ 2530
2531ecb_noinline ecb_cold
2532static void
2533evpipe_init (EV_P)
2534{
2535 if (!ev_is_active (&pipe_w))
2536 {
2537 int fds [2];
2538
2539# if EV_USE_EVENTFD
2540 fds [0] = -1;
2541 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
2542 if (fds [1] < 0 && errno == EINVAL)
2543 fds [1] = eventfd (0, 0);
2544
2545 if (fds [1] < 0)
2546# endif
2547 {
2548 while (pipe (fds))
2549 ev_syserr ("(libev) error creating signal/async pipe");
2550
2551 fd_intern (fds [0]);
2552 }
2553
2554 evpipe [0] = fds [0];
2555
2556 if (evpipe [1] < 0)
2557 evpipe [1] = fds [1]; /* first call, set write fd */
2558 else
2559 {
2560 /* on subsequent calls, do not change evpipe [1] */
2561 /* so that evpipe_write can always rely on its value. */
2562 /* this branch does not do anything sensible on windows, */
2563 /* so must not be executed on windows */
2564
2565 dup2 (fds [1], evpipe [1]);
2566 close (fds [1]);
2567 }
2568
2569 fd_intern (evpipe [1]);
2570
2571 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2572 ev_io_start (EV_A_ &pipe_w);
2573 ev_unref (EV_A); /* watcher should not keep loop alive */
2574 }
2575}
2576
1091inline_speed void 2577inline_speed void
1092fd_intern (int fd) 2578evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1093{ 2579{
1094#ifdef _WIN32 2580 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1095 unsigned long arg = 1;
1096 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1097#else
1098 fcntl (fd, F_SETFD, FD_CLOEXEC);
1099 fcntl (fd, F_SETFL, O_NONBLOCK);
1100#endif
1101}
1102 2581
1103static void noinline 2582 if (ecb_expect_true (*flag))
1104evpipe_init (EV_P) 2583 return;
1105{ 2584
1106 if (!ev_is_active (&pipe_w)) 2585 *flag = 1;
2586 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2587
2588 pipe_write_skipped = 1;
2589
2590 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2591
2592 if (pipe_write_wanted)
1107 { 2593 {
2594 int old_errno;
2595
2596 pipe_write_skipped = 0;
2597 ECB_MEMORY_FENCE_RELEASE;
2598
2599 old_errno = errno; /* save errno because write will clobber it */
2600
1108#if EV_USE_EVENTFD 2601#if EV_USE_EVENTFD
1109 if ((evfd = eventfd (0, 0)) >= 0) 2602 if (evpipe [0] < 0)
1110 { 2603 {
1111 evpipe [0] = -1; 2604 uint64_t counter = 1;
1112 fd_intern (evfd); 2605 write (evpipe [1], &counter, sizeof (uint64_t));
1113 ev_io_set (&pipe_w, evfd, EV_READ);
1114 } 2606 }
1115 else 2607 else
1116#endif 2608#endif
1117 { 2609 {
1118 while (pipe (evpipe)) 2610#ifdef _WIN32
1119 ev_syserr ("(libev) error creating signal/async pipe"); 2611 WSABUF buf;
1120 2612 DWORD sent;
1121 fd_intern (evpipe [0]); 2613 buf.buf = (char *)&buf;
1122 fd_intern (evpipe [1]); 2614 buf.len = 1;
1123 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2615 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2616#else
2617 write (evpipe [1], &(evpipe [1]), 1);
2618#endif
1124 } 2619 }
1125
1126 ev_io_start (EV_A_ &pipe_w);
1127 ev_unref (EV_A); /* watcher should not keep loop alive */
1128 }
1129}
1130
1131inline_size void
1132evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1133{
1134 if (!*flag)
1135 {
1136 int old_errno = errno; /* save errno because write might clobber it */
1137
1138 *flag = 1;
1139
1140#if EV_USE_EVENTFD
1141 if (evfd >= 0)
1142 {
1143 uint64_t counter = 1;
1144 write (evfd, &counter, sizeof (uint64_t));
1145 }
1146 else
1147#endif
1148 write (evpipe [1], &old_errno, 1);
1149 2620
1150 errno = old_errno; 2621 errno = old_errno;
1151 } 2622 }
1152} 2623}
1153 2624
1154/* called whenever the libev signal pipe */ 2625/* called whenever the libev signal pipe */
1155/* got some events (signal, async) */ 2626/* got some events (signal, async) */
1156static void 2627static void
1157pipecb (EV_P_ ev_io *iow, int revents) 2628pipecb (EV_P_ ev_io *iow, int revents)
1158{ 2629{
2630 int i;
2631
2632 if (revents & EV_READ)
2633 {
1159#if EV_USE_EVENTFD 2634#if EV_USE_EVENTFD
1160 if (evfd >= 0) 2635 if (evpipe [0] < 0)
1161 { 2636 {
1162 uint64_t counter; 2637 uint64_t counter;
1163 read (evfd, &counter, sizeof (uint64_t)); 2638 read (evpipe [1], &counter, sizeof (uint64_t));
1164 } 2639 }
1165 else 2640 else
1166#endif 2641#endif
1167 { 2642 {
1168 char dummy; 2643 char dummy[4];
2644#ifdef _WIN32
2645 WSABUF buf;
2646 DWORD recvd;
2647 DWORD flags = 0;
2648 buf.buf = dummy;
2649 buf.len = sizeof (dummy);
2650 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2651#else
1169 read (evpipe [0], &dummy, 1); 2652 read (evpipe [0], &dummy, sizeof (dummy));
2653#endif
2654 }
2655 }
2656
2657 pipe_write_skipped = 0;
2658
2659 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2660
2661#if EV_SIGNAL_ENABLE
2662 if (sig_pending)
1170 } 2663 {
2664 sig_pending = 0;
1171 2665
1172 if (gotsig && ev_is_default_loop (EV_A)) 2666 ECB_MEMORY_FENCE;
1173 {
1174 int signum;
1175 gotsig = 0;
1176 2667
1177 for (signum = signalmax; signum--; ) 2668 for (i = EV_NSIG - 1; i--; )
1178 if (signals [signum].gotsig) 2669 if (ecb_expect_false (signals [i].pending))
1179 ev_feed_signal_event (EV_A_ signum + 1); 2670 ev_feed_signal_event (EV_A_ i + 1);
1180 } 2671 }
2672#endif
1181 2673
1182#if EV_ASYNC_ENABLE 2674#if EV_ASYNC_ENABLE
1183 if (gotasync) 2675 if (async_pending)
1184 { 2676 {
1185 int i; 2677 async_pending = 0;
1186 gotasync = 0; 2678
2679 ECB_MEMORY_FENCE;
1187 2680
1188 for (i = asynccnt; i--; ) 2681 for (i = asynccnt; i--; )
1189 if (asyncs [i]->sent) 2682 if (asyncs [i]->sent)
1190 { 2683 {
1191 asyncs [i]->sent = 0; 2684 asyncs [i]->sent = 0;
2685 ECB_MEMORY_FENCE_RELEASE;
1192 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2686 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1193 } 2687 }
1194 } 2688 }
1195#endif 2689#endif
1196} 2690}
1197 2691
1198/*****************************************************************************/ 2692/*****************************************************************************/
1199 2693
2694void
2695ev_feed_signal (int signum) EV_NOEXCEPT
2696{
2697#if EV_MULTIPLICITY
2698 EV_P;
2699 ECB_MEMORY_FENCE_ACQUIRE;
2700 EV_A = signals [signum - 1].loop;
2701
2702 if (!EV_A)
2703 return;
2704#endif
2705
2706 signals [signum - 1].pending = 1;
2707 evpipe_write (EV_A_ &sig_pending);
2708}
2709
1200static void 2710static void
1201ev_sighandler (int signum) 2711ev_sighandler (int signum)
1202{ 2712{
2713#ifdef _WIN32
2714 signal (signum, ev_sighandler);
2715#endif
2716
2717 ev_feed_signal (signum);
2718}
2719
2720ecb_noinline
2721void
2722ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
2723{
2724 WL w;
2725
2726 if (ecb_expect_false (signum <= 0 || signum >= EV_NSIG))
2727 return;
2728
2729 --signum;
2730
1203#if EV_MULTIPLICITY 2731#if EV_MULTIPLICITY
1204 struct ev_loop *loop = &default_loop_struct; 2732 /* it is permissible to try to feed a signal to the wrong loop */
1205#endif 2733 /* or, likely more useful, feeding a signal nobody is waiting for */
1206 2734
1207#if _WIN32 2735 if (ecb_expect_false (signals [signum].loop != EV_A))
1208 signal (signum, ev_sighandler);
1209#endif
1210
1211 signals [signum - 1].gotsig = 1;
1212 evpipe_write (EV_A_ &gotsig);
1213}
1214
1215void noinline
1216ev_feed_signal_event (EV_P_ int signum)
1217{
1218 WL w;
1219
1220#if EV_MULTIPLICITY
1221 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1222#endif
1223
1224 --signum;
1225
1226 if (signum < 0 || signum >= signalmax)
1227 return; 2736 return;
2737#endif
1228 2738
1229 signals [signum].gotsig = 0; 2739 signals [signum].pending = 0;
2740 ECB_MEMORY_FENCE_RELEASE;
1230 2741
1231 for (w = signals [signum].head; w; w = w->next) 2742 for (w = signals [signum].head; w; w = w->next)
1232 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2743 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1233} 2744}
1234 2745
2746#if EV_USE_SIGNALFD
2747static void
2748sigfdcb (EV_P_ ev_io *iow, int revents)
2749{
2750 struct signalfd_siginfo si[2], *sip; /* these structs are big */
2751
2752 for (;;)
2753 {
2754 ssize_t res = read (sigfd, si, sizeof (si));
2755
2756 /* not ISO-C, as res might be -1, but works with SuS */
2757 for (sip = si; (char *)sip < (char *)si + res; ++sip)
2758 ev_feed_signal_event (EV_A_ sip->ssi_signo);
2759
2760 if (res < (ssize_t)sizeof (si))
2761 break;
2762 }
2763}
2764#endif
2765
2766#endif
2767
1235/*****************************************************************************/ 2768/*****************************************************************************/
1236 2769
2770#if EV_CHILD_ENABLE
1237static WL childs [EV_PID_HASHSIZE]; 2771static WL childs [EV_PID_HASHSIZE];
1238
1239#ifndef _WIN32
1240 2772
1241static ev_signal childev; 2773static ev_signal childev;
1242 2774
1243#ifndef WIFCONTINUED 2775#ifndef WIFCONTINUED
1244# define WIFCONTINUED(status) 0 2776# define WIFCONTINUED(status) 0
… …
1249child_reap (EV_P_ int chain, int pid, int status) 2781child_reap (EV_P_ int chain, int pid, int status)
1250{ 2782{
1251 ev_child *w; 2783 ev_child *w;
1252 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2784 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1253 2785
1254 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2786 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1255 { 2787 {
1256 if ((w->pid == pid || !w->pid) 2788 if ((w->pid == pid || !w->pid)
1257 && (!traced || (w->flags & 1))) 2789 && (!traced || (w->flags & 1)))
1258 { 2790 {
1259 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2791 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1284 /* make sure we are called again until all children have been reaped */ 2816 /* make sure we are called again until all children have been reaped */
1285 /* we need to do it this way so that the callback gets called before we continue */ 2817 /* we need to do it this way so that the callback gets called before we continue */
1286 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2818 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1287 2819
1288 child_reap (EV_A_ pid, pid, status); 2820 child_reap (EV_A_ pid, pid, status);
1289 if (EV_PID_HASHSIZE > 1) 2821 if ((EV_PID_HASHSIZE) > 1)
1290 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2822 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1291} 2823}
1292 2824
1293#endif 2825#endif
1294 2826
1295/*****************************************************************************/ 2827/*****************************************************************************/
1296 2828
2829#if EV_USE_IOCP
2830# include "ev_iocp.c"
2831#endif
1297#if EV_USE_PORT 2832#if EV_USE_PORT
1298# include "ev_port.c" 2833# include "ev_port.c"
1299#endif 2834#endif
1300#if EV_USE_KQUEUE 2835#if EV_USE_KQUEUE
1301# include "ev_kqueue.c" 2836# include "ev_kqueue.c"
1302#endif 2837#endif
1303#if EV_USE_EPOLL 2838#if EV_USE_EPOLL
1304# include "ev_epoll.c" 2839# include "ev_epoll.c"
1305#endif 2840#endif
2841#if EV_USE_LINUXAIO
2842# include "ev_linuxaio.c"
2843#endif
2844#if EV_USE_IOURING
2845# include "ev_iouring.c"
2846#endif
1306#if EV_USE_POLL 2847#if EV_USE_POLL
1307# include "ev_poll.c" 2848# include "ev_poll.c"
1308#endif 2849#endif
1309#if EV_USE_SELECT 2850#if EV_USE_SELECT
1310# include "ev_select.c" 2851# include "ev_select.c"
1311#endif 2852#endif
1312 2853
1313int 2854ecb_cold int
1314ev_version_major (void) 2855ev_version_major (void) EV_NOEXCEPT
1315{ 2856{
1316 return EV_VERSION_MAJOR; 2857 return EV_VERSION_MAJOR;
1317} 2858}
1318 2859
1319int 2860ecb_cold int
1320ev_version_minor (void) 2861ev_version_minor (void) EV_NOEXCEPT
1321{ 2862{
1322 return EV_VERSION_MINOR; 2863 return EV_VERSION_MINOR;
1323} 2864}
1324 2865
1325/* return true if we are running with elevated privileges and should ignore env variables */ 2866/* return true if we are running with elevated privileges and should ignore env variables */
1326int inline_size 2867inline_size ecb_cold int
1327enable_secure (void) 2868enable_secure (void)
1328{ 2869{
1329#ifdef _WIN32 2870#ifdef _WIN32
1330 return 0; 2871 return 0;
1331#else 2872#else
1332 return getuid () != geteuid () 2873 return getuid () != geteuid ()
1333 || getgid () != getegid (); 2874 || getgid () != getegid ();
1334#endif 2875#endif
1335} 2876}
1336 2877
2878ecb_cold
1337unsigned int 2879unsigned int
1338ev_supported_backends (void) 2880ev_supported_backends (void) EV_NOEXCEPT
1339{ 2881{
1340 unsigned int flags = 0; 2882 unsigned int flags = 0;
1341 2883
1342 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2884 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1343 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2885 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
1344 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 2886 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2887 if (EV_USE_LINUXAIO) flags |= EVBACKEND_LINUXAIO;
2888 if (EV_USE_IOURING ) flags |= EVBACKEND_IOURING;
1345 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 2889 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
1346 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2890 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
1347 2891
1348 return flags; 2892 return flags;
1349} 2893}
1350 2894
2895ecb_cold
1351unsigned int 2896unsigned int
1352ev_recommended_backends (void) 2897ev_recommended_backends (void) EV_NOEXCEPT
1353{ 2898{
1354 unsigned int flags = ev_supported_backends (); 2899 unsigned int flags = ev_supported_backends ();
1355 2900
1356#ifndef __NetBSD__ 2901#ifndef __NetBSD__
1357 /* kqueue is borked on everything but netbsd apparently */ 2902 /* kqueue is borked on everything but netbsd apparently */
… …
1361#ifdef __APPLE__ 2906#ifdef __APPLE__
1362 /* only select works correctly on that "unix-certified" platform */ 2907 /* only select works correctly on that "unix-certified" platform */
1363 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2908 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1364 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 2909 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1365#endif 2910#endif
2911#ifdef __FreeBSD__
2912 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2913#endif
2914
2915 /* TODO: linuxaio is very experimental */
2916#if !EV_RECOMMEND_LINUXAIO
2917 flags &= ~EVBACKEND_LINUXAIO;
2918#endif
2919 /* TODO: linuxaio is super experimental */
2920#if !EV_RECOMMEND_IOURING
2921 flags &= ~EVBACKEND_IOURING;
2922#endif
1366 2923
1367 return flags; 2924 return flags;
1368} 2925}
1369 2926
2927ecb_cold
1370unsigned int 2928unsigned int
1371ev_embeddable_backends (void) 2929ev_embeddable_backends (void) EV_NOEXCEPT
1372{ 2930{
1373 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2931 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1374 2932
1375 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2933 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1376 /* please fix it and tell me how to detect the fix */ 2934 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1377 flags &= ~EVBACKEND_EPOLL; 2935 flags &= ~EVBACKEND_EPOLL;
2936
2937 /* EVBACKEND_LINUXAIO is theoretically embeddable, but suffers from a performance overhead */
2938
2939 /* EVBACKEND_IOURING is practically embeddable, but the current implementation is not
2940 * because our backend_fd is the epoll fd we need as fallback.
2941 * if the kernel ever is fixed, this might change...
2942 */
1378 2943
1379 return flags; 2944 return flags;
1380} 2945}
1381 2946
1382unsigned int 2947unsigned int
1383ev_backend (EV_P) 2948ev_backend (EV_P) EV_NOEXCEPT
1384{ 2949{
1385 return backend; 2950 return backend;
1386} 2951}
1387 2952
1388#if EV_MINIMAL < 2 2953#if EV_FEATURE_API
1389unsigned int 2954unsigned int
1390ev_loop_count (EV_P) 2955ev_iteration (EV_P) EV_NOEXCEPT
1391{ 2956{
1392 return loop_count; 2957 return loop_count;
1393} 2958}
1394 2959
1395unsigned int 2960unsigned int
1396ev_loop_depth (EV_P) 2961ev_depth (EV_P) EV_NOEXCEPT
1397{ 2962{
1398 return loop_depth; 2963 return loop_depth;
1399} 2964}
1400 2965
1401void 2966void
1402ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2967ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1403{ 2968{
1404 io_blocktime = interval; 2969 io_blocktime = interval;
1405} 2970}
1406 2971
1407void 2972void
1408ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2973ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1409{ 2974{
1410 timeout_blocktime = interval; 2975 timeout_blocktime = interval;
1411} 2976}
1412 2977
1413void 2978void
1414ev_set_userdata (EV_P_ void *data) 2979ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
1415{ 2980{
1416 userdata = data; 2981 userdata = data;
1417} 2982}
1418 2983
1419void * 2984void *
1420ev_userdata (EV_P) 2985ev_userdata (EV_P) EV_NOEXCEPT
1421{ 2986{
1422 return userdata; 2987 return userdata;
1423} 2988}
1424 2989
2990void
1425void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2991ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
1426{ 2992{
1427 invoke_cb = invoke_pending_cb; 2993 invoke_cb = invoke_pending_cb;
1428} 2994}
1429 2995
2996void
1430void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2997ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
1431{ 2998{
1432 release_cb = release; 2999 release_cb = release;
1433 acquire_cb = acquire; 3000 acquire_cb = acquire;
1434} 3001}
1435#endif 3002#endif
1436 3003
1437/* initialise a loop structure, must be zero-initialised */ 3004/* initialise a loop structure, must be zero-initialised */
1438static void noinline 3005ecb_noinline ecb_cold
3006static void
1439loop_init (EV_P_ unsigned int flags) 3007loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
1440{ 3008{
1441 if (!backend) 3009 if (!backend)
1442 { 3010 {
3011 origflags = flags;
3012
1443#if EV_USE_REALTIME 3013#if EV_USE_REALTIME
1444 if (!have_realtime) 3014 if (!have_realtime)
1445 { 3015 {
1446 struct timespec ts; 3016 struct timespec ts;
1447 3017
… …
1458 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 3028 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1459 have_monotonic = 1; 3029 have_monotonic = 1;
1460 } 3030 }
1461#endif 3031#endif
1462 3032
1463 ev_rt_now = ev_time ();
1464 mn_now = get_clock ();
1465 now_floor = mn_now;
1466 rtmn_diff = ev_rt_now - mn_now;
1467#if EV_MINIMAL < 2
1468 invoke_cb = ev_invoke_pending;
1469#endif
1470
1471 io_blocktime = 0.;
1472 timeout_blocktime = 0.;
1473 backend = 0;
1474 backend_fd = -1;
1475 gotasync = 0;
1476#if EV_USE_INOTIFY
1477 fs_fd = -2;
1478#endif
1479
1480 /* pid check not overridable via env */ 3033 /* pid check not overridable via env */
1481#ifndef _WIN32 3034#ifndef _WIN32
1482 if (flags & EVFLAG_FORKCHECK) 3035 if (flags & EVFLAG_FORKCHECK)
1483 curpid = getpid (); 3036 curpid = getpid ();
1484#endif 3037#endif
… …
1486 if (!(flags & EVFLAG_NOENV) 3039 if (!(flags & EVFLAG_NOENV)
1487 && !enable_secure () 3040 && !enable_secure ()
1488 && getenv ("LIBEV_FLAGS")) 3041 && getenv ("LIBEV_FLAGS"))
1489 flags = atoi (getenv ("LIBEV_FLAGS")); 3042 flags = atoi (getenv ("LIBEV_FLAGS"));
1490 3043
1491 if (!(flags & 0x0000ffffU)) 3044 ev_rt_now = ev_time ();
3045 mn_now = get_clock ();
3046 now_floor = mn_now;
3047 rtmn_diff = ev_rt_now - mn_now;
3048#if EV_FEATURE_API
3049 invoke_cb = ev_invoke_pending;
3050#endif
3051
3052 io_blocktime = 0.;
3053 timeout_blocktime = 0.;
3054 backend = 0;
3055 backend_fd = -1;
3056 sig_pending = 0;
3057#if EV_ASYNC_ENABLE
3058 async_pending = 0;
3059#endif
3060 pipe_write_skipped = 0;
3061 pipe_write_wanted = 0;
3062 evpipe [0] = -1;
3063 evpipe [1] = -1;
3064#if EV_USE_INOTIFY
3065 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
3066#endif
3067#if EV_USE_SIGNALFD
3068 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
3069#endif
3070
3071 if (!(flags & EVBACKEND_MASK))
1492 flags |= ev_recommended_backends (); 3072 flags |= ev_recommended_backends ();
1493 3073
3074#if EV_USE_IOCP
3075 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
3076#endif
1494#if EV_USE_PORT 3077#if EV_USE_PORT
1495 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 3078 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1496#endif 3079#endif
1497#if EV_USE_KQUEUE 3080#if EV_USE_KQUEUE
1498 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 3081 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
3082#endif
3083#if EV_USE_IOURING
3084 if (!backend && (flags & EVBACKEND_IOURING )) backend = iouring_init (EV_A_ flags);
3085#endif
3086#if EV_USE_LINUXAIO
3087 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
1499#endif 3088#endif
1500#if EV_USE_EPOLL 3089#if EV_USE_EPOLL
1501 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 3090 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
1502#endif 3091#endif
1503#if EV_USE_POLL 3092#if EV_USE_POLL
1504 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 3093 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
1505#endif 3094#endif
1506#if EV_USE_SELECT 3095#if EV_USE_SELECT
1507 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 3096 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
1508#endif 3097#endif
1509 3098
1510 ev_prepare_init (&pending_w, pendingcb); 3099 ev_prepare_init (&pending_w, pendingcb);
1511 3100
3101#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1512 ev_init (&pipe_w, pipecb); 3102 ev_init (&pipe_w, pipecb);
1513 ev_set_priority (&pipe_w, EV_MAXPRI); 3103 ev_set_priority (&pipe_w, EV_MAXPRI);
3104#endif
1514 } 3105 }
1515} 3106}
1516 3107
1517/* free up a loop structure */ 3108/* free up a loop structure */
1518static void noinline 3109ecb_cold
3110void
1519loop_destroy (EV_P) 3111ev_loop_destroy (EV_P)
1520{ 3112{
1521 int i; 3113 int i;
1522 3114
3115#if EV_MULTIPLICITY
3116 /* mimic free (0) */
3117 if (!EV_A)
3118 return;
3119#endif
3120
3121#if EV_CLEANUP_ENABLE
3122 /* queue cleanup watchers (and execute them) */
3123 if (ecb_expect_false (cleanupcnt))
3124 {
3125 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
3126 EV_INVOKE_PENDING;
3127 }
3128#endif
3129
3130#if EV_CHILD_ENABLE
3131 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
3132 {
3133 ev_ref (EV_A); /* child watcher */
3134 ev_signal_stop (EV_A_ &childev);
3135 }
3136#endif
3137
1523 if (ev_is_active (&pipe_w)) 3138 if (ev_is_active (&pipe_w))
1524 { 3139 {
1525 ev_ref (EV_A); /* signal watcher */ 3140 /*ev_ref (EV_A);*/
1526 ev_io_stop (EV_A_ &pipe_w); 3141 /*ev_io_stop (EV_A_ &pipe_w);*/
1527 3142
3143 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
3144 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
3145 }
3146
1528#if EV_USE_EVENTFD 3147#if EV_USE_SIGNALFD
1529 if (evfd >= 0) 3148 if (ev_is_active (&sigfd_w))
1530 close (evfd); 3149 close (sigfd);
1531#endif 3150#endif
1532
1533 if (evpipe [0] >= 0)
1534 {
1535 close (evpipe [0]);
1536 close (evpipe [1]);
1537 }
1538 }
1539 3151
1540#if EV_USE_INOTIFY 3152#if EV_USE_INOTIFY
1541 if (fs_fd >= 0) 3153 if (fs_fd >= 0)
1542 close (fs_fd); 3154 close (fs_fd);
1543#endif 3155#endif
1544 3156
1545 if (backend_fd >= 0) 3157 if (backend_fd >= 0)
1546 close (backend_fd); 3158 close (backend_fd);
1547 3159
3160#if EV_USE_IOCP
3161 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
3162#endif
1548#if EV_USE_PORT 3163#if EV_USE_PORT
1549 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3164 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1550#endif 3165#endif
1551#if EV_USE_KQUEUE 3166#if EV_USE_KQUEUE
1552 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3167 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
3168#endif
3169#if EV_USE_IOURING
3170 if (backend == EVBACKEND_IOURING ) iouring_destroy (EV_A);
3171#endif
3172#if EV_USE_LINUXAIO
3173 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
1553#endif 3174#endif
1554#if EV_USE_EPOLL 3175#if EV_USE_EPOLL
1555 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3176 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
1556#endif 3177#endif
1557#if EV_USE_POLL 3178#if EV_USE_POLL
1558 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3179 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
1559#endif 3180#endif
1560#if EV_USE_SELECT 3181#if EV_USE_SELECT
1561 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3182 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
1562#endif 3183#endif
1563 3184
1564 for (i = NUMPRI; i--; ) 3185 for (i = NUMPRI; i--; )
1565 { 3186 {
1566 array_free (pending, [i]); 3187 array_free (pending, [i]);
1567#if EV_IDLE_ENABLE 3188#if EV_IDLE_ENABLE
1568 array_free (idle, [i]); 3189 array_free (idle, [i]);
1569#endif 3190#endif
1570 } 3191 }
1571 3192
1572 ev_free (anfds); anfdmax = 0; 3193 ev_free (anfds); anfds = 0; anfdmax = 0;
1573 3194
1574 /* have to use the microsoft-never-gets-it-right macro */ 3195 /* have to use the microsoft-never-gets-it-right macro */
1575 array_free (rfeed, EMPTY); 3196 array_free (rfeed, EMPTY);
1576 array_free (fdchange, EMPTY); 3197 array_free (fdchange, EMPTY);
1577 array_free (timer, EMPTY); 3198 array_free (timer, EMPTY);
… …
1579 array_free (periodic, EMPTY); 3200 array_free (periodic, EMPTY);
1580#endif 3201#endif
1581#if EV_FORK_ENABLE 3202#if EV_FORK_ENABLE
1582 array_free (fork, EMPTY); 3203 array_free (fork, EMPTY);
1583#endif 3204#endif
3205#if EV_CLEANUP_ENABLE
3206 array_free (cleanup, EMPTY);
3207#endif
1584 array_free (prepare, EMPTY); 3208 array_free (prepare, EMPTY);
1585 array_free (check, EMPTY); 3209 array_free (check, EMPTY);
1586#if EV_ASYNC_ENABLE 3210#if EV_ASYNC_ENABLE
1587 array_free (async, EMPTY); 3211 array_free (async, EMPTY);
1588#endif 3212#endif
1589 3213
1590 backend = 0; 3214 backend = 0;
3215
3216#if EV_MULTIPLICITY
3217 if (ev_is_default_loop (EV_A))
3218#endif
3219 ev_default_loop_ptr = 0;
3220#if EV_MULTIPLICITY
3221 else
3222 ev_free (EV_A);
3223#endif
1591} 3224}
1592 3225
1593#if EV_USE_INOTIFY 3226#if EV_USE_INOTIFY
1594inline_size void infy_fork (EV_P); 3227inline_size void infy_fork (EV_P);
1595#endif 3228#endif
1596 3229
1597inline_size void 3230inline_size void
1598loop_fork (EV_P) 3231loop_fork (EV_P)
1599{ 3232{
1600#if EV_USE_PORT 3233#if EV_USE_PORT
1601 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3234 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1602#endif 3235#endif
1603#if EV_USE_KQUEUE 3236#if EV_USE_KQUEUE
1604 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 3237 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
3238#endif
3239#if EV_USE_IOURING
3240 if (backend == EVBACKEND_IOURING ) iouring_fork (EV_A);
3241#endif
3242#if EV_USE_LINUXAIO
3243 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
1605#endif 3244#endif
1606#if EV_USE_EPOLL 3245#if EV_USE_EPOLL
1607 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3246 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
1608#endif 3247#endif
1609#if EV_USE_INOTIFY 3248#if EV_USE_INOTIFY
1610 infy_fork (EV_A); 3249 infy_fork (EV_A);
1611#endif 3250#endif
1612 3251
3252#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1613 if (ev_is_active (&pipe_w)) 3253 if (ev_is_active (&pipe_w) && postfork != 2)
1614 { 3254 {
1615 /* this "locks" the handlers against writing to the pipe */ 3255 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1616 /* while we modify the fd vars */
1617 gotsig = 1;
1618#if EV_ASYNC_ENABLE
1619 gotasync = 1;
1620#endif
1621 3256
1622 ev_ref (EV_A); 3257 ev_ref (EV_A);
1623 ev_io_stop (EV_A_ &pipe_w); 3258 ev_io_stop (EV_A_ &pipe_w);
1624 3259
1625#if EV_USE_EVENTFD
1626 if (evfd >= 0)
1627 close (evfd);
1628#endif
1629
1630 if (evpipe [0] >= 0) 3260 if (evpipe [0] >= 0)
1631 { 3261 EV_WIN32_CLOSE_FD (evpipe [0]);
1632 close (evpipe [0]);
1633 close (evpipe [1]);
1634 }
1635 3262
1636 evpipe_init (EV_A); 3263 evpipe_init (EV_A);
1637 /* now iterate over everything, in case we missed something */ 3264 /* iterate over everything, in case we missed something before */
1638 pipecb (EV_A_ &pipe_w, EV_READ); 3265 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1639 } 3266 }
3267#endif
1640 3268
1641 postfork = 0; 3269 postfork = 0;
1642} 3270}
1643 3271
1644#if EV_MULTIPLICITY 3272#if EV_MULTIPLICITY
1645 3273
3274ecb_cold
1646struct ev_loop * 3275struct ev_loop *
1647ev_loop_new (unsigned int flags) 3276ev_loop_new (unsigned int flags) EV_NOEXCEPT
1648{ 3277{
1649 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3278 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1650 3279
1651 memset (loop, 0, sizeof (struct ev_loop)); 3280 memset (EV_A, 0, sizeof (struct ev_loop));
1652
1653 loop_init (EV_A_ flags); 3281 loop_init (EV_A_ flags);
1654 3282
1655 if (ev_backend (EV_A)) 3283 if (ev_backend (EV_A))
1656 return loop; 3284 return EV_A;
1657 3285
3286 ev_free (EV_A);
1658 return 0; 3287 return 0;
1659} 3288}
1660 3289
1661void
1662ev_loop_destroy (EV_P)
1663{
1664 loop_destroy (EV_A);
1665 ev_free (loop);
1666}
1667
1668void
1669ev_loop_fork (EV_P)
1670{
1671 postfork = 1; /* must be in line with ev_default_fork */
1672}
1673#endif /* multiplicity */ 3290#endif /* multiplicity */
1674 3291
1675#if EV_VERIFY 3292#if EV_VERIFY
1676static void noinline 3293ecb_noinline ecb_cold
3294static void
1677verify_watcher (EV_P_ W w) 3295verify_watcher (EV_P_ W w)
1678{ 3296{
1679 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3297 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1680 3298
1681 if (w->pending) 3299 if (w->pending)
1682 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3300 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1683} 3301}
1684 3302
1685static void noinline 3303ecb_noinline ecb_cold
3304static void
1686verify_heap (EV_P_ ANHE *heap, int N) 3305verify_heap (EV_P_ ANHE *heap, int N)
1687{ 3306{
1688 int i; 3307 int i;
1689 3308
1690 for (i = HEAP0; i < N + HEAP0; ++i) 3309 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1695 3314
1696 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3315 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1697 } 3316 }
1698} 3317}
1699 3318
1700static void noinline 3319ecb_noinline ecb_cold
3320static void
1701array_verify (EV_P_ W *ws, int cnt) 3321array_verify (EV_P_ W *ws, int cnt)
1702{ 3322{
1703 while (cnt--) 3323 while (cnt--)
1704 { 3324 {
1705 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3325 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1706 verify_watcher (EV_A_ ws [cnt]); 3326 verify_watcher (EV_A_ ws [cnt]);
1707 } 3327 }
1708} 3328}
1709#endif 3329#endif
1710 3330
1711#if EV_MINIMAL < 2 3331#if EV_FEATURE_API
1712void 3332void ecb_cold
1713ev_loop_verify (EV_P) 3333ev_verify (EV_P) EV_NOEXCEPT
1714{ 3334{
1715#if EV_VERIFY 3335#if EV_VERIFY
1716 int i; 3336 int i;
1717 WL w; 3337 WL w, w2;
1718 3338
1719 assert (activecnt >= -1); 3339 assert (activecnt >= -1);
1720 3340
1721 assert (fdchangemax >= fdchangecnt); 3341 assert (fdchangemax >= fdchangecnt);
1722 for (i = 0; i < fdchangecnt; ++i) 3342 for (i = 0; i < fdchangecnt; ++i)
1723 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3343 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1724 3344
1725 assert (anfdmax >= 0); 3345 assert (anfdmax >= 0);
1726 for (i = 0; i < anfdmax; ++i) 3346 for (i = 0; i < anfdmax; ++i)
3347 {
3348 int j = 0;
3349
1727 for (w = anfds [i].head; w; w = w->next) 3350 for (w = w2 = anfds [i].head; w; w = w->next)
1728 { 3351 {
1729 verify_watcher (EV_A_ (W)w); 3352 verify_watcher (EV_A_ (W)w);
3353
3354 if (j++ & 1)
3355 {
3356 assert (("libev: io watcher list contains a loop", w != w2));
3357 w2 = w2->next;
3358 }
3359
1730 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3360 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1731 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 3361 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1732 } 3362 }
3363 }
1733 3364
1734 assert (timermax >= timercnt); 3365 assert (timermax >= timercnt);
1735 verify_heap (EV_A_ timers, timercnt); 3366 verify_heap (EV_A_ timers, timercnt);
1736 3367
1737#if EV_PERIODIC_ENABLE 3368#if EV_PERIODIC_ENABLE
… …
1752#if EV_FORK_ENABLE 3383#if EV_FORK_ENABLE
1753 assert (forkmax >= forkcnt); 3384 assert (forkmax >= forkcnt);
1754 array_verify (EV_A_ (W *)forks, forkcnt); 3385 array_verify (EV_A_ (W *)forks, forkcnt);
1755#endif 3386#endif
1756 3387
3388#if EV_CLEANUP_ENABLE
3389 assert (cleanupmax >= cleanupcnt);
3390 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
3391#endif
3392
1757#if EV_ASYNC_ENABLE 3393#if EV_ASYNC_ENABLE
1758 assert (asyncmax >= asynccnt); 3394 assert (asyncmax >= asynccnt);
1759 array_verify (EV_A_ (W *)asyncs, asynccnt); 3395 array_verify (EV_A_ (W *)asyncs, asynccnt);
1760#endif 3396#endif
1761 3397
3398#if EV_PREPARE_ENABLE
1762 assert (preparemax >= preparecnt); 3399 assert (preparemax >= preparecnt);
1763 array_verify (EV_A_ (W *)prepares, preparecnt); 3400 array_verify (EV_A_ (W *)prepares, preparecnt);
3401#endif
1764 3402
3403#if EV_CHECK_ENABLE
1765 assert (checkmax >= checkcnt); 3404 assert (checkmax >= checkcnt);
1766 array_verify (EV_A_ (W *)checks, checkcnt); 3405 array_verify (EV_A_ (W *)checks, checkcnt);
3406#endif
1767 3407
1768# if 0 3408# if 0
3409#if EV_CHILD_ENABLE
1769 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 3410 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1770 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 3411 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
3412#endif
1771# endif 3413# endif
1772#endif 3414#endif
1773} 3415}
1774#endif 3416#endif
1775 3417
1776#if EV_MULTIPLICITY 3418#if EV_MULTIPLICITY
3419ecb_cold
1777struct ev_loop * 3420struct ev_loop *
1778ev_default_loop_init (unsigned int flags)
1779#else 3421#else
1780int 3422int
3423#endif
1781ev_default_loop (unsigned int flags) 3424ev_default_loop (unsigned int flags) EV_NOEXCEPT
1782#endif
1783{ 3425{
1784 if (!ev_default_loop_ptr) 3426 if (!ev_default_loop_ptr)
1785 { 3427 {
1786#if EV_MULTIPLICITY 3428#if EV_MULTIPLICITY
1787 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 3429 EV_P = ev_default_loop_ptr = &default_loop_struct;
1788#else 3430#else
1789 ev_default_loop_ptr = 1; 3431 ev_default_loop_ptr = 1;
1790#endif 3432#endif
1791 3433
1792 loop_init (EV_A_ flags); 3434 loop_init (EV_A_ flags);
1793 3435
1794 if (ev_backend (EV_A)) 3436 if (ev_backend (EV_A))
1795 { 3437 {
1796#ifndef _WIN32 3438#if EV_CHILD_ENABLE
1797 ev_signal_init (&childev, childcb, SIGCHLD); 3439 ev_signal_init (&childev, childcb, SIGCHLD);
1798 ev_set_priority (&childev, EV_MAXPRI); 3440 ev_set_priority (&childev, EV_MAXPRI);
1799 ev_signal_start (EV_A_ &childev); 3441 ev_signal_start (EV_A_ &childev);
1800 ev_unref (EV_A); /* child watcher should not keep loop alive */ 3442 ev_unref (EV_A); /* child watcher should not keep loop alive */
1801#endif 3443#endif
… …
1806 3448
1807 return ev_default_loop_ptr; 3449 return ev_default_loop_ptr;
1808} 3450}
1809 3451
1810void 3452void
1811ev_default_destroy (void) 3453ev_loop_fork (EV_P) EV_NOEXCEPT
1812{ 3454{
1813#if EV_MULTIPLICITY 3455 postfork = 1;
1814 struct ev_loop *loop = ev_default_loop_ptr;
1815#endif
1816
1817 ev_default_loop_ptr = 0;
1818
1819#ifndef _WIN32
1820 ev_ref (EV_A); /* child watcher */
1821 ev_signal_stop (EV_A_ &childev);
1822#endif
1823
1824 loop_destroy (EV_A);
1825}
1826
1827void
1828ev_default_fork (void)
1829{
1830#if EV_MULTIPLICITY
1831 struct ev_loop *loop = ev_default_loop_ptr;
1832#endif
1833
1834 postfork = 1; /* must be in line with ev_loop_fork */
1835} 3456}
1836 3457
1837/*****************************************************************************/ 3458/*****************************************************************************/
1838 3459
1839void 3460void
… …
1841{ 3462{
1842 EV_CB_INVOKE ((W)w, revents); 3463 EV_CB_INVOKE ((W)w, revents);
1843} 3464}
1844 3465
1845unsigned int 3466unsigned int
1846ev_pending_count (EV_P) 3467ev_pending_count (EV_P) EV_NOEXCEPT
1847{ 3468{
1848 int pri; 3469 int pri;
1849 unsigned int count = 0; 3470 unsigned int count = 0;
1850 3471
1851 for (pri = NUMPRI; pri--; ) 3472 for (pri = NUMPRI; pri--; )
1852 count += pendingcnt [pri]; 3473 count += pendingcnt [pri];
1853 3474
1854 return count; 3475 return count;
1855} 3476}
1856 3477
1857void noinline 3478ecb_noinline
3479void
1858ev_invoke_pending (EV_P) 3480ev_invoke_pending (EV_P)
1859{ 3481{
1860 int pri; 3482 pendingpri = NUMPRI;
1861 3483
1862 for (pri = NUMPRI; pri--; ) 3484 do
3485 {
3486 --pendingpri;
3487
3488 /* pendingpri possibly gets modified in the inner loop */
1863 while (pendingcnt [pri]) 3489 while (pendingcnt [pendingpri])
1864 { 3490 {
1865 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3491 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
1866 3492
1867 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1868 /* ^ this is no longer true, as pending_w could be here */
1869
1870 p->w->pending = 0; 3493 p->w->pending = 0;
1871 EV_CB_INVOKE (p->w, p->events); 3494 EV_CB_INVOKE (p->w, p->events);
1872 EV_FREQUENT_CHECK; 3495 EV_FREQUENT_CHECK;
1873 } 3496 }
3497 }
3498 while (pendingpri);
1874} 3499}
1875 3500
1876#if EV_IDLE_ENABLE 3501#if EV_IDLE_ENABLE
1877/* make idle watchers pending. this handles the "call-idle */ 3502/* make idle watchers pending. this handles the "call-idle */
1878/* only when higher priorities are idle" logic */ 3503/* only when higher priorities are idle" logic */
1879inline_size void 3504inline_size void
1880idle_reify (EV_P) 3505idle_reify (EV_P)
1881{ 3506{
1882 if (expect_false (idleall)) 3507 if (ecb_expect_false (idleall))
1883 { 3508 {
1884 int pri; 3509 int pri;
1885 3510
1886 for (pri = NUMPRI; pri--; ) 3511 for (pri = NUMPRI; pri--; )
1887 { 3512 {
… …
1930 EV_FREQUENT_CHECK; 3555 EV_FREQUENT_CHECK;
1931 feed_reverse (EV_A_ (W)w); 3556 feed_reverse (EV_A_ (W)w);
1932 } 3557 }
1933 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 3558 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1934 3559
1935 feed_reverse_done (EV_A_ EV_TIMEOUT); 3560 feed_reverse_done (EV_A_ EV_TIMER);
1936 } 3561 }
1937} 3562}
1938 3563
1939#if EV_PERIODIC_ENABLE 3564#if EV_PERIODIC_ENABLE
3565
3566ecb_noinline
3567static void
3568periodic_recalc (EV_P_ ev_periodic *w)
3569{
3570 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3571 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3572
3573 /* the above almost always errs on the low side */
3574 while (at <= ev_rt_now)
3575 {
3576 ev_tstamp nat = at + w->interval;
3577
3578 /* when resolution fails us, we use ev_rt_now */
3579 if (ecb_expect_false (nat == at))
3580 {
3581 at = ev_rt_now;
3582 break;
3583 }
3584
3585 at = nat;
3586 }
3587
3588 ev_at (w) = at;
3589}
3590
1940/* make periodics pending */ 3591/* make periodics pending */
1941inline_size void 3592inline_size void
1942periodics_reify (EV_P) 3593periodics_reify (EV_P)
1943{ 3594{
1944 EV_FREQUENT_CHECK; 3595 EV_FREQUENT_CHECK;
1945 3596
1946 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3597 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1947 { 3598 {
1948 int feed_count = 0;
1949
1950 do 3599 do
1951 { 3600 {
1952 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3601 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
1953 3602
1954 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3603 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
1963 ANHE_at_cache (periodics [HEAP0]); 3612 ANHE_at_cache (periodics [HEAP0]);
1964 downheap (periodics, periodiccnt, HEAP0); 3613 downheap (periodics, periodiccnt, HEAP0);
1965 } 3614 }
1966 else if (w->interval) 3615 else if (w->interval)
1967 { 3616 {
1968 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3617 periodic_recalc (EV_A_ w);
1969 /* if next trigger time is not sufficiently in the future, put it there */
1970 /* this might happen because of floating point inexactness */
1971 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1972 {
1973 ev_at (w) += w->interval;
1974
1975 /* if interval is unreasonably low we might still have a time in the past */
1976 /* so correct this. this will make the periodic very inexact, but the user */
1977 /* has effectively asked to get triggered more often than possible */
1978 if (ev_at (w) < ev_rt_now)
1979 ev_at (w) = ev_rt_now;
1980 }
1981
1982 ANHE_at_cache (periodics [HEAP0]); 3618 ANHE_at_cache (periodics [HEAP0]);
1983 downheap (periodics, periodiccnt, HEAP0); 3619 downheap (periodics, periodiccnt, HEAP0);
1984 } 3620 }
1985 else 3621 else
1986 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3622 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
1993 feed_reverse_done (EV_A_ EV_PERIODIC); 3629 feed_reverse_done (EV_A_ EV_PERIODIC);
1994 } 3630 }
1995} 3631}
1996 3632
1997/* simply recalculate all periodics */ 3633/* simply recalculate all periodics */
1998/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 3634/* TODO: maybe ensure that at least one event happens when jumping forward? */
1999static void noinline 3635ecb_noinline ecb_cold
3636static void
2000periodics_reschedule (EV_P) 3637periodics_reschedule (EV_P)
2001{ 3638{
2002 int i; 3639 int i;
2003 3640
2004 /* adjust periodics after time jump */ 3641 /* adjust periodics after time jump */
… …
2007 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3644 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2008 3645
2009 if (w->reschedule_cb) 3646 if (w->reschedule_cb)
2010 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3647 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2011 else if (w->interval) 3648 else if (w->interval)
2012 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3649 periodic_recalc (EV_A_ w);
2013 3650
2014 ANHE_at_cache (periodics [i]); 3651 ANHE_at_cache (periodics [i]);
2015 } 3652 }
2016 3653
2017 reheap (periodics, periodiccnt); 3654 reheap (periodics, periodiccnt);
2018} 3655}
2019#endif 3656#endif
2020 3657
2021/* adjust all timers by a given offset */ 3658/* adjust all timers by a given offset */
2022static void noinline 3659ecb_noinline ecb_cold
3660static void
2023timers_reschedule (EV_P_ ev_tstamp adjust) 3661timers_reschedule (EV_P_ ev_tstamp adjust)
2024{ 3662{
2025 int i; 3663 int i;
2026 3664
2027 for (i = 0; i < timercnt; ++i) 3665 for (i = 0; i < timercnt; ++i)
… …
2031 ANHE_at_cache (*he); 3669 ANHE_at_cache (*he);
2032 } 3670 }
2033} 3671}
2034 3672
2035/* fetch new monotonic and realtime times from the kernel */ 3673/* fetch new monotonic and realtime times from the kernel */
2036/* also detetc if there was a timejump, and act accordingly */ 3674/* also detect if there was a timejump, and act accordingly */
2037inline_speed void 3675inline_speed void
2038time_update (EV_P_ ev_tstamp max_block) 3676time_update (EV_P_ ev_tstamp max_block)
2039{ 3677{
2040#if EV_USE_MONOTONIC 3678#if EV_USE_MONOTONIC
2041 if (expect_true (have_monotonic)) 3679 if (ecb_expect_true (have_monotonic))
2042 { 3680 {
2043 int i; 3681 int i;
2044 ev_tstamp odiff = rtmn_diff; 3682 ev_tstamp odiff = rtmn_diff;
2045 3683
2046 mn_now = get_clock (); 3684 mn_now = get_clock ();
2047 3685
2048 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3686 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
2049 /* interpolate in the meantime */ 3687 /* interpolate in the meantime */
2050 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 3688 if (ecb_expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
2051 { 3689 {
2052 ev_rt_now = rtmn_diff + mn_now; 3690 ev_rt_now = rtmn_diff + mn_now;
2053 return; 3691 return;
2054 } 3692 }
2055 3693
… …
2064 * doesn't hurt either as we only do this on time-jumps or 3702 * doesn't hurt either as we only do this on time-jumps or
2065 * in the unlikely event of having been preempted here. 3703 * in the unlikely event of having been preempted here.
2066 */ 3704 */
2067 for (i = 4; --i; ) 3705 for (i = 4; --i; )
2068 { 3706 {
3707 ev_tstamp diff;
2069 rtmn_diff = ev_rt_now - mn_now; 3708 rtmn_diff = ev_rt_now - mn_now;
2070 3709
3710 diff = odiff - rtmn_diff;
3711
2071 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3712 if (ecb_expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2072 return; /* all is well */ 3713 return; /* all is well */
2073 3714
2074 ev_rt_now = ev_time (); 3715 ev_rt_now = ev_time ();
2075 mn_now = get_clock (); 3716 mn_now = get_clock ();
2076 now_floor = mn_now; 3717 now_floor = mn_now;
… …
2085 else 3726 else
2086#endif 3727#endif
2087 { 3728 {
2088 ev_rt_now = ev_time (); 3729 ev_rt_now = ev_time ();
2089 3730
2090 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 3731 if (ecb_expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
2091 { 3732 {
2092 /* adjust timers. this is easy, as the offset is the same for all of them */ 3733 /* adjust timers. this is easy, as the offset is the same for all of them */
2093 timers_reschedule (EV_A_ ev_rt_now - mn_now); 3734 timers_reschedule (EV_A_ ev_rt_now - mn_now);
2094#if EV_PERIODIC_ENABLE 3735#if EV_PERIODIC_ENABLE
2095 periodics_reschedule (EV_A); 3736 periodics_reschedule (EV_A);
… …
2098 3739
2099 mn_now = ev_rt_now; 3740 mn_now = ev_rt_now;
2100 } 3741 }
2101} 3742}
2102 3743
2103void 3744int
2104ev_loop (EV_P_ int flags) 3745ev_run (EV_P_ int flags)
2105{ 3746{
2106#if EV_MINIMAL < 2 3747#if EV_FEATURE_API
2107 ++loop_depth; 3748 ++loop_depth;
2108#endif 3749#endif
2109 3750
2110 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 3751 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2111 3752
2112 loop_done = EVUNLOOP_CANCEL; 3753 loop_done = EVBREAK_CANCEL;
2113 3754
2114 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 3755 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2115 3756
2116 do 3757 do
2117 { 3758 {
2118#if EV_VERIFY >= 2 3759#if EV_VERIFY >= 2
2119 ev_loop_verify (EV_A); 3760 ev_verify (EV_A);
2120#endif 3761#endif
2121 3762
2122#ifndef _WIN32 3763#ifndef _WIN32
2123 if (expect_false (curpid)) /* penalise the forking check even more */ 3764 if (ecb_expect_false (curpid)) /* penalise the forking check even more */
2124 if (expect_false (getpid () != curpid)) 3765 if (ecb_expect_false (getpid () != curpid))
2125 { 3766 {
2126 curpid = getpid (); 3767 curpid = getpid ();
2127 postfork = 1; 3768 postfork = 1;
2128 } 3769 }
2129#endif 3770#endif
2130 3771
2131#if EV_FORK_ENABLE 3772#if EV_FORK_ENABLE
2132 /* we might have forked, so queue fork handlers */ 3773 /* we might have forked, so queue fork handlers */
2133 if (expect_false (postfork)) 3774 if (ecb_expect_false (postfork))
2134 if (forkcnt) 3775 if (forkcnt)
2135 { 3776 {
2136 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3777 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2137 EV_INVOKE_PENDING; 3778 EV_INVOKE_PENDING;
2138 } 3779 }
2139#endif 3780#endif
2140 3781
3782#if EV_PREPARE_ENABLE
2141 /* queue prepare watchers (and execute them) */ 3783 /* queue prepare watchers (and execute them) */
2142 if (expect_false (preparecnt)) 3784 if (ecb_expect_false (preparecnt))
2143 { 3785 {
2144 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3786 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2145 EV_INVOKE_PENDING; 3787 EV_INVOKE_PENDING;
2146 } 3788 }
3789#endif
2147 3790
2148 if (expect_false (loop_done)) 3791 if (ecb_expect_false (loop_done))
2149 break; 3792 break;
2150 3793
2151 /* we might have forked, so reify kernel state if necessary */ 3794 /* we might have forked, so reify kernel state if necessary */
2152 if (expect_false (postfork)) 3795 if (ecb_expect_false (postfork))
2153 loop_fork (EV_A); 3796 loop_fork (EV_A);
2154 3797
2155 /* update fd-related kernel structures */ 3798 /* update fd-related kernel structures */
2156 fd_reify (EV_A); 3799 fd_reify (EV_A);
2157 3800
2158 /* calculate blocking time */ 3801 /* calculate blocking time */
2159 { 3802 {
2160 ev_tstamp waittime = 0.; 3803 ev_tstamp waittime = 0.;
2161 ev_tstamp sleeptime = 0.; 3804 ev_tstamp sleeptime = 0.;
2162 3805
3806 /* remember old timestamp for io_blocktime calculation */
3807 ev_tstamp prev_mn_now = mn_now;
3808
3809 /* update time to cancel out callback processing overhead */
3810 time_update (EV_A_ 1e100);
3811
3812 /* from now on, we want a pipe-wake-up */
3813 pipe_write_wanted = 1;
3814
3815 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3816
2163 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3817 if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2164 { 3818 {
2165 /* remember old timestamp for io_blocktime calculation */
2166 ev_tstamp prev_mn_now = mn_now;
2167
2168 /* update time to cancel out callback processing overhead */
2169 time_update (EV_A_ 1e100);
2170
2171 waittime = MAX_BLOCKTIME; 3819 waittime = MAX_BLOCKTIME;
2172 3820
2173 if (timercnt) 3821 if (timercnt)
2174 { 3822 {
2175 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3823 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2176 if (waittime > to) waittime = to; 3824 if (waittime > to) waittime = to;
2177 } 3825 }
2178 3826
2179#if EV_PERIODIC_ENABLE 3827#if EV_PERIODIC_ENABLE
2180 if (periodiccnt) 3828 if (periodiccnt)
2181 { 3829 {
2182 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3830 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2183 if (waittime > to) waittime = to; 3831 if (waittime > to) waittime = to;
2184 } 3832 }
2185#endif 3833#endif
2186 3834
2187 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3835 /* don't let timeouts decrease the waittime below timeout_blocktime */
2188 if (expect_false (waittime < timeout_blocktime)) 3836 if (ecb_expect_false (waittime < timeout_blocktime))
2189 waittime = timeout_blocktime; 3837 waittime = timeout_blocktime;
2190 3838
3839 /* at this point, we NEED to wait, so we have to ensure */
3840 /* to pass a minimum nonzero value to the backend */
3841 if (ecb_expect_false (waittime < backend_mintime))
3842 waittime = backend_mintime;
3843
2191 /* extra check because io_blocktime is commonly 0 */ 3844 /* extra check because io_blocktime is commonly 0 */
2192 if (expect_false (io_blocktime)) 3845 if (ecb_expect_false (io_blocktime))
2193 { 3846 {
2194 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3847 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2195 3848
2196 if (sleeptime > waittime - backend_fudge) 3849 if (sleeptime > waittime - backend_mintime)
2197 sleeptime = waittime - backend_fudge; 3850 sleeptime = waittime - backend_mintime;
2198 3851
2199 if (expect_true (sleeptime > 0.)) 3852 if (ecb_expect_true (sleeptime > 0.))
2200 { 3853 {
2201 ev_sleep (sleeptime); 3854 ev_sleep (sleeptime);
2202 waittime -= sleeptime; 3855 waittime -= sleeptime;
2203 } 3856 }
2204 } 3857 }
2205 } 3858 }
2206 3859
2207#if EV_MINIMAL < 2 3860#if EV_FEATURE_API
2208 ++loop_count; 3861 ++loop_count;
2209#endif 3862#endif
2210 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3863 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2211 backend_poll (EV_A_ waittime); 3864 backend_poll (EV_A_ waittime);
2212 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 3865 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3866
3867 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3868
3869 ECB_MEMORY_FENCE_ACQUIRE;
3870 if (pipe_write_skipped)
3871 {
3872 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3873 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3874 }
2213 3875
2214 /* update ev_rt_now, do magic */ 3876 /* update ev_rt_now, do magic */
2215 time_update (EV_A_ waittime + sleeptime); 3877 time_update (EV_A_ waittime + sleeptime);
2216 } 3878 }
2217 3879
… …
2224#if EV_IDLE_ENABLE 3886#if EV_IDLE_ENABLE
2225 /* queue idle watchers unless other events are pending */ 3887 /* queue idle watchers unless other events are pending */
2226 idle_reify (EV_A); 3888 idle_reify (EV_A);
2227#endif 3889#endif
2228 3890
3891#if EV_CHECK_ENABLE
2229 /* queue check watchers, to be executed first */ 3892 /* queue check watchers, to be executed first */
2230 if (expect_false (checkcnt)) 3893 if (ecb_expect_false (checkcnt))
2231 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3894 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3895#endif
2232 3896
2233 EV_INVOKE_PENDING; 3897 EV_INVOKE_PENDING;
2234 } 3898 }
2235 while (expect_true ( 3899 while (ecb_expect_true (
2236 activecnt 3900 activecnt
2237 && !loop_done 3901 && !loop_done
2238 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3902 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2239 )); 3903 ));
2240 3904
2241 if (loop_done == EVUNLOOP_ONE) 3905 if (loop_done == EVBREAK_ONE)
2242 loop_done = EVUNLOOP_CANCEL; 3906 loop_done = EVBREAK_CANCEL;
2243 3907
2244#if EV_MINIMAL < 2 3908#if EV_FEATURE_API
2245 --loop_depth; 3909 --loop_depth;
2246#endif 3910#endif
2247}
2248 3911
3912 return activecnt;
3913}
3914
2249void 3915void
2250ev_unloop (EV_P_ int how) 3916ev_break (EV_P_ int how) EV_NOEXCEPT
2251{ 3917{
2252 loop_done = how; 3918 loop_done = how;
2253} 3919}
2254 3920
2255void 3921void
2256ev_ref (EV_P) 3922ev_ref (EV_P) EV_NOEXCEPT
2257{ 3923{
2258 ++activecnt; 3924 ++activecnt;
2259} 3925}
2260 3926
2261void 3927void
2262ev_unref (EV_P) 3928ev_unref (EV_P) EV_NOEXCEPT
2263{ 3929{
2264 --activecnt; 3930 --activecnt;
2265} 3931}
2266 3932
2267void 3933void
2268ev_now_update (EV_P) 3934ev_now_update (EV_P) EV_NOEXCEPT
2269{ 3935{
2270 time_update (EV_A_ 1e100); 3936 time_update (EV_A_ 1e100);
2271} 3937}
2272 3938
2273void 3939void
2274ev_suspend (EV_P) 3940ev_suspend (EV_P) EV_NOEXCEPT
2275{ 3941{
2276 ev_now_update (EV_A); 3942 ev_now_update (EV_A);
2277} 3943}
2278 3944
2279void 3945void
2280ev_resume (EV_P) 3946ev_resume (EV_P) EV_NOEXCEPT
2281{ 3947{
2282 ev_tstamp mn_prev = mn_now; 3948 ev_tstamp mn_prev = mn_now;
2283 3949
2284 ev_now_update (EV_A); 3950 ev_now_update (EV_A);
2285 timers_reschedule (EV_A_ mn_now - mn_prev); 3951 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2302inline_size void 3968inline_size void
2303wlist_del (WL *head, WL elem) 3969wlist_del (WL *head, WL elem)
2304{ 3970{
2305 while (*head) 3971 while (*head)
2306 { 3972 {
2307 if (*head == elem) 3973 if (ecb_expect_true (*head == elem))
2308 { 3974 {
2309 *head = elem->next; 3975 *head = elem->next;
2310 return; 3976 break;
2311 } 3977 }
2312 3978
2313 head = &(*head)->next; 3979 head = &(*head)->next;
2314 } 3980 }
2315} 3981}
… …
2324 w->pending = 0; 3990 w->pending = 0;
2325 } 3991 }
2326} 3992}
2327 3993
2328int 3994int
2329ev_clear_pending (EV_P_ void *w) 3995ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
2330{ 3996{
2331 W w_ = (W)w; 3997 W w_ = (W)w;
2332 int pending = w_->pending; 3998 int pending = w_->pending;
2333 3999
2334 if (expect_true (pending)) 4000 if (ecb_expect_true (pending))
2335 { 4001 {
2336 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 4002 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2337 p->w = (W)&pending_w; 4003 p->w = (W)&pending_w;
2338 w_->pending = 0; 4004 w_->pending = 0;
2339 return p->events; 4005 return p->events;
… …
2366 w->active = 0; 4032 w->active = 0;
2367} 4033}
2368 4034
2369/*****************************************************************************/ 4035/*****************************************************************************/
2370 4036
2371void noinline 4037ecb_noinline
4038void
2372ev_io_start (EV_P_ ev_io *w) 4039ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
2373{ 4040{
2374 int fd = w->fd; 4041 int fd = w->fd;
2375 4042
2376 if (expect_false (ev_is_active (w))) 4043 if (ecb_expect_false (ev_is_active (w)))
2377 return; 4044 return;
2378 4045
2379 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 4046 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2380 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 4047 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2381 4048
4049#if EV_VERIFY >= 2
4050 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
4051#endif
2382 EV_FREQUENT_CHECK; 4052 EV_FREQUENT_CHECK;
2383 4053
2384 ev_start (EV_A_ (W)w, 1); 4054 ev_start (EV_A_ (W)w, 1);
2385 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 4055 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
2386 wlist_add (&anfds[fd].head, (WL)w); 4056 wlist_add (&anfds[fd].head, (WL)w);
4057
4058 /* common bug, apparently */
4059 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
2387 4060
2388 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 4061 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2389 w->events &= ~EV__IOFDSET; 4062 w->events &= ~EV__IOFDSET;
2390 4063
2391 EV_FREQUENT_CHECK; 4064 EV_FREQUENT_CHECK;
2392} 4065}
2393 4066
2394void noinline 4067ecb_noinline
4068void
2395ev_io_stop (EV_P_ ev_io *w) 4069ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
2396{ 4070{
2397 clear_pending (EV_A_ (W)w); 4071 clear_pending (EV_A_ (W)w);
2398 if (expect_false (!ev_is_active (w))) 4072 if (ecb_expect_false (!ev_is_active (w)))
2399 return; 4073 return;
2400 4074
2401 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 4075 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2402 4076
4077#if EV_VERIFY >= 2
4078 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
4079#endif
2403 EV_FREQUENT_CHECK; 4080 EV_FREQUENT_CHECK;
2404 4081
2405 wlist_del (&anfds[w->fd].head, (WL)w); 4082 wlist_del (&anfds[w->fd].head, (WL)w);
2406 ev_stop (EV_A_ (W)w); 4083 ev_stop (EV_A_ (W)w);
2407 4084
2408 fd_change (EV_A_ w->fd, 1); 4085 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2409 4086
2410 EV_FREQUENT_CHECK; 4087 EV_FREQUENT_CHECK;
2411} 4088}
2412 4089
2413void noinline 4090ecb_noinline
4091void
2414ev_timer_start (EV_P_ ev_timer *w) 4092ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
2415{ 4093{
2416 if (expect_false (ev_is_active (w))) 4094 if (ecb_expect_false (ev_is_active (w)))
2417 return; 4095 return;
2418 4096
2419 ev_at (w) += mn_now; 4097 ev_at (w) += mn_now;
2420 4098
2421 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 4099 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2422 4100
2423 EV_FREQUENT_CHECK; 4101 EV_FREQUENT_CHECK;
2424 4102
2425 ++timercnt; 4103 ++timercnt;
2426 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 4104 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
2427 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 4105 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
2428 ANHE_w (timers [ev_active (w)]) = (WT)w; 4106 ANHE_w (timers [ev_active (w)]) = (WT)w;
2429 ANHE_at_cache (timers [ev_active (w)]); 4107 ANHE_at_cache (timers [ev_active (w)]);
2430 upheap (timers, ev_active (w)); 4108 upheap (timers, ev_active (w));
2431 4109
2432 EV_FREQUENT_CHECK; 4110 EV_FREQUENT_CHECK;
2433 4111
2434 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 4112 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2435} 4113}
2436 4114
2437void noinline 4115ecb_noinline
4116void
2438ev_timer_stop (EV_P_ ev_timer *w) 4117ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
2439{ 4118{
2440 clear_pending (EV_A_ (W)w); 4119 clear_pending (EV_A_ (W)w);
2441 if (expect_false (!ev_is_active (w))) 4120 if (ecb_expect_false (!ev_is_active (w)))
2442 return; 4121 return;
2443 4122
2444 EV_FREQUENT_CHECK; 4123 EV_FREQUENT_CHECK;
2445 4124
2446 { 4125 {
… …
2448 4127
2449 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 4128 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2450 4129
2451 --timercnt; 4130 --timercnt;
2452 4131
2453 if (expect_true (active < timercnt + HEAP0)) 4132 if (ecb_expect_true (active < timercnt + HEAP0))
2454 { 4133 {
2455 timers [active] = timers [timercnt + HEAP0]; 4134 timers [active] = timers [timercnt + HEAP0];
2456 adjustheap (timers, timercnt, active); 4135 adjustheap (timers, timercnt, active);
2457 } 4136 }
2458 } 4137 }
2459 4138
2460 EV_FREQUENT_CHECK;
2461
2462 ev_at (w) -= mn_now; 4139 ev_at (w) -= mn_now;
2463 4140
2464 ev_stop (EV_A_ (W)w); 4141 ev_stop (EV_A_ (W)w);
2465}
2466 4142
2467void noinline 4143 EV_FREQUENT_CHECK;
4144}
4145
4146ecb_noinline
4147void
2468ev_timer_again (EV_P_ ev_timer *w) 4148ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
2469{ 4149{
2470 EV_FREQUENT_CHECK; 4150 EV_FREQUENT_CHECK;
4151
4152 clear_pending (EV_A_ (W)w);
2471 4153
2472 if (ev_is_active (w)) 4154 if (ev_is_active (w))
2473 { 4155 {
2474 if (w->repeat) 4156 if (w->repeat)
2475 { 4157 {
… …
2487 } 4169 }
2488 4170
2489 EV_FREQUENT_CHECK; 4171 EV_FREQUENT_CHECK;
2490} 4172}
2491 4173
4174ev_tstamp
4175ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
4176{
4177 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
4178}
4179
2492#if EV_PERIODIC_ENABLE 4180#if EV_PERIODIC_ENABLE
2493void noinline 4181ecb_noinline
4182void
2494ev_periodic_start (EV_P_ ev_periodic *w) 4183ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
2495{ 4184{
2496 if (expect_false (ev_is_active (w))) 4185 if (ecb_expect_false (ev_is_active (w)))
2497 return; 4186 return;
2498 4187
2499 if (w->reschedule_cb) 4188 if (w->reschedule_cb)
2500 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4189 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2501 else if (w->interval) 4190 else if (w->interval)
2502 { 4191 {
2503 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 4192 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2504 /* this formula differs from the one in periodic_reify because we do not always round up */ 4193 periodic_recalc (EV_A_ w);
2505 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2506 } 4194 }
2507 else 4195 else
2508 ev_at (w) = w->offset; 4196 ev_at (w) = w->offset;
2509 4197
2510 EV_FREQUENT_CHECK; 4198 EV_FREQUENT_CHECK;
2511 4199
2512 ++periodiccnt; 4200 ++periodiccnt;
2513 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4201 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2514 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4202 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
2515 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4203 ANHE_w (periodics [ev_active (w)]) = (WT)w;
2516 ANHE_at_cache (periodics [ev_active (w)]); 4204 ANHE_at_cache (periodics [ev_active (w)]);
2517 upheap (periodics, ev_active (w)); 4205 upheap (periodics, ev_active (w));
2518 4206
2519 EV_FREQUENT_CHECK; 4207 EV_FREQUENT_CHECK;
2520 4208
2521 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4209 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2522} 4210}
2523 4211
2524void noinline 4212ecb_noinline
4213void
2525ev_periodic_stop (EV_P_ ev_periodic *w) 4214ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
2526{ 4215{
2527 clear_pending (EV_A_ (W)w); 4216 clear_pending (EV_A_ (W)w);
2528 if (expect_false (!ev_is_active (w))) 4217 if (ecb_expect_false (!ev_is_active (w)))
2529 return; 4218 return;
2530 4219
2531 EV_FREQUENT_CHECK; 4220 EV_FREQUENT_CHECK;
2532 4221
2533 { 4222 {
… …
2535 4224
2536 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 4225 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2537 4226
2538 --periodiccnt; 4227 --periodiccnt;
2539 4228
2540 if (expect_true (active < periodiccnt + HEAP0)) 4229 if (ecb_expect_true (active < periodiccnt + HEAP0))
2541 { 4230 {
2542 periodics [active] = periodics [periodiccnt + HEAP0]; 4231 periodics [active] = periodics [periodiccnt + HEAP0];
2543 adjustheap (periodics, periodiccnt, active); 4232 adjustheap (periodics, periodiccnt, active);
2544 } 4233 }
2545 } 4234 }
2546 4235
2547 EV_FREQUENT_CHECK;
2548
2549 ev_stop (EV_A_ (W)w); 4236 ev_stop (EV_A_ (W)w);
2550}
2551 4237
2552void noinline 4238 EV_FREQUENT_CHECK;
4239}
4240
4241ecb_noinline
4242void
2553ev_periodic_again (EV_P_ ev_periodic *w) 4243ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
2554{ 4244{
2555 /* TODO: use adjustheap and recalculation */ 4245 /* TODO: use adjustheap and recalculation */
2556 ev_periodic_stop (EV_A_ w); 4246 ev_periodic_stop (EV_A_ w);
2557 ev_periodic_start (EV_A_ w); 4247 ev_periodic_start (EV_A_ w);
2558} 4248}
… …
2560 4250
2561#ifndef SA_RESTART 4251#ifndef SA_RESTART
2562# define SA_RESTART 0 4252# define SA_RESTART 0
2563#endif 4253#endif
2564 4254
2565void noinline 4255#if EV_SIGNAL_ENABLE
4256
4257ecb_noinline
4258void
2566ev_signal_start (EV_P_ ev_signal *w) 4259ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
2567{ 4260{
4261 if (ecb_expect_false (ev_is_active (w)))
4262 return;
4263
4264 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
4265
2568#if EV_MULTIPLICITY 4266#if EV_MULTIPLICITY
2569 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4267 assert (("libev: a signal must not be attached to two different loops",
2570#endif 4268 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2571 if (expect_false (ev_is_active (w)))
2572 return;
2573 4269
2574 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0)); 4270 signals [w->signum - 1].loop = EV_A;
4271 ECB_MEMORY_FENCE_RELEASE;
4272#endif
2575 4273
2576 evpipe_init (EV_A);
2577
2578 EV_FREQUENT_CHECK; 4274 EV_FREQUENT_CHECK;
2579 4275
4276#if EV_USE_SIGNALFD
4277 if (sigfd == -2)
2580 { 4278 {
2581#ifndef _WIN32 4279 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2582 sigset_t full, prev; 4280 if (sigfd < 0 && errno == EINVAL)
2583 sigfillset (&full); 4281 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2584 sigprocmask (SIG_SETMASK, &full, &prev);
2585#endif
2586 4282
2587 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); 4283 if (sigfd >= 0)
4284 {
4285 fd_intern (sigfd); /* doing it twice will not hurt */
2588 4286
2589#ifndef _WIN32 4287 sigemptyset (&sigfd_set);
2590 sigprocmask (SIG_SETMASK, &prev, 0); 4288
2591#endif 4289 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
4290 ev_set_priority (&sigfd_w, EV_MAXPRI);
4291 ev_io_start (EV_A_ &sigfd_w);
4292 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
4293 }
2592 } 4294 }
4295
4296 if (sigfd >= 0)
4297 {
4298 /* TODO: check .head */
4299 sigaddset (&sigfd_set, w->signum);
4300 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
4301
4302 signalfd (sigfd, &sigfd_set, 0);
4303 }
4304#endif
2593 4305
2594 ev_start (EV_A_ (W)w, 1); 4306 ev_start (EV_A_ (W)w, 1);
2595 wlist_add (&signals [w->signum - 1].head, (WL)w); 4307 wlist_add (&signals [w->signum - 1].head, (WL)w);
2596 4308
2597 if (!((WL)w)->next) 4309 if (!((WL)w)->next)
4310# if EV_USE_SIGNALFD
4311 if (sigfd < 0) /*TODO*/
4312# endif
2598 { 4313 {
2599#if _WIN32 4314# ifdef _WIN32
4315 evpipe_init (EV_A);
4316
2600 signal (w->signum, ev_sighandler); 4317 signal (w->signum, ev_sighandler);
2601#else 4318# else
2602 struct sigaction sa = { }; 4319 struct sigaction sa;
4320
4321 evpipe_init (EV_A);
4322
2603 sa.sa_handler = ev_sighandler; 4323 sa.sa_handler = ev_sighandler;
2604 sigfillset (&sa.sa_mask); 4324 sigfillset (&sa.sa_mask);
2605 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 4325 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2606 sigaction (w->signum, &sa, 0); 4326 sigaction (w->signum, &sa, 0);
4327
4328 if (origflags & EVFLAG_NOSIGMASK)
4329 {
4330 sigemptyset (&sa.sa_mask);
4331 sigaddset (&sa.sa_mask, w->signum);
4332 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
4333 }
2607#endif 4334#endif
2608 } 4335 }
2609 4336
2610 EV_FREQUENT_CHECK; 4337 EV_FREQUENT_CHECK;
2611} 4338}
2612 4339
2613void noinline 4340ecb_noinline
4341void
2614ev_signal_stop (EV_P_ ev_signal *w) 4342ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
2615{ 4343{
2616 clear_pending (EV_A_ (W)w); 4344 clear_pending (EV_A_ (W)w);
2617 if (expect_false (!ev_is_active (w))) 4345 if (ecb_expect_false (!ev_is_active (w)))
2618 return; 4346 return;
2619 4347
2620 EV_FREQUENT_CHECK; 4348 EV_FREQUENT_CHECK;
2621 4349
2622 wlist_del (&signals [w->signum - 1].head, (WL)w); 4350 wlist_del (&signals [w->signum - 1].head, (WL)w);
2623 ev_stop (EV_A_ (W)w); 4351 ev_stop (EV_A_ (W)w);
2624 4352
2625 if (!signals [w->signum - 1].head) 4353 if (!signals [w->signum - 1].head)
4354 {
4355#if EV_MULTIPLICITY
4356 signals [w->signum - 1].loop = 0; /* unattach from signal */
4357#endif
4358#if EV_USE_SIGNALFD
4359 if (sigfd >= 0)
4360 {
4361 sigset_t ss;
4362
4363 sigemptyset (&ss);
4364 sigaddset (&ss, w->signum);
4365 sigdelset (&sigfd_set, w->signum);
4366
4367 signalfd (sigfd, &sigfd_set, 0);
4368 sigprocmask (SIG_UNBLOCK, &ss, 0);
4369 }
4370 else
4371#endif
2626 signal (w->signum, SIG_DFL); 4372 signal (w->signum, SIG_DFL);
4373 }
2627 4374
2628 EV_FREQUENT_CHECK; 4375 EV_FREQUENT_CHECK;
2629} 4376}
2630 4377
4378#endif
4379
4380#if EV_CHILD_ENABLE
4381
2631void 4382void
2632ev_child_start (EV_P_ ev_child *w) 4383ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
2633{ 4384{
2634#if EV_MULTIPLICITY 4385#if EV_MULTIPLICITY
2635 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4386 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2636#endif 4387#endif
2637 if (expect_false (ev_is_active (w))) 4388 if (ecb_expect_false (ev_is_active (w)))
2638 return; 4389 return;
2639 4390
2640 EV_FREQUENT_CHECK; 4391 EV_FREQUENT_CHECK;
2641 4392
2642 ev_start (EV_A_ (W)w, 1); 4393 ev_start (EV_A_ (W)w, 1);
2643 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4394 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2644 4395
2645 EV_FREQUENT_CHECK; 4396 EV_FREQUENT_CHECK;
2646} 4397}
2647 4398
2648void 4399void
2649ev_child_stop (EV_P_ ev_child *w) 4400ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
2650{ 4401{
2651 clear_pending (EV_A_ (W)w); 4402 clear_pending (EV_A_ (W)w);
2652 if (expect_false (!ev_is_active (w))) 4403 if (ecb_expect_false (!ev_is_active (w)))
2653 return; 4404 return;
2654 4405
2655 EV_FREQUENT_CHECK; 4406 EV_FREQUENT_CHECK;
2656 4407
2657 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4408 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2658 ev_stop (EV_A_ (W)w); 4409 ev_stop (EV_A_ (W)w);
2659 4410
2660 EV_FREQUENT_CHECK; 4411 EV_FREQUENT_CHECK;
2661} 4412}
4413
4414#endif
2662 4415
2663#if EV_STAT_ENABLE 4416#if EV_STAT_ENABLE
2664 4417
2665# ifdef _WIN32 4418# ifdef _WIN32
2666# undef lstat 4419# undef lstat
… …
2669 4422
2670#define DEF_STAT_INTERVAL 5.0074891 4423#define DEF_STAT_INTERVAL 5.0074891
2671#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4424#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2672#define MIN_STAT_INTERVAL 0.1074891 4425#define MIN_STAT_INTERVAL 0.1074891
2673 4426
2674static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4427ecb_noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2675 4428
2676#if EV_USE_INOTIFY 4429#if EV_USE_INOTIFY
2677# define EV_INOTIFY_BUFSIZE 8192
2678 4430
2679static void noinline 4431/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
4432# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
4433
4434ecb_noinline
4435static void
2680infy_add (EV_P_ ev_stat *w) 4436infy_add (EV_P_ ev_stat *w)
2681{ 4437{
2682 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); 4438 w->wd = inotify_add_watch (fs_fd, w->path,
4439 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4440 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4441 | IN_DONT_FOLLOW | IN_MASK_ADD);
2683 4442
2684 if (w->wd < 0) 4443 if (w->wd >= 0)
4444 {
4445 struct statfs sfs;
4446
4447 /* now local changes will be tracked by inotify, but remote changes won't */
4448 /* unless the filesystem is known to be local, we therefore still poll */
4449 /* also do poll on <2.6.25, but with normal frequency */
4450
4451 if (!fs_2625)
4452 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
4453 else if (!statfs (w->path, &sfs)
4454 && (sfs.f_type == 0x1373 /* devfs */
4455 || sfs.f_type == 0x4006 /* fat */
4456 || sfs.f_type == 0x4d44 /* msdos */
4457 || sfs.f_type == 0xEF53 /* ext2/3 */
4458 || sfs.f_type == 0x72b6 /* jffs2 */
4459 || sfs.f_type == 0x858458f6 /* ramfs */
4460 || sfs.f_type == 0x5346544e /* ntfs */
4461 || sfs.f_type == 0x3153464a /* jfs */
4462 || sfs.f_type == 0x9123683e /* btrfs */
4463 || sfs.f_type == 0x52654973 /* reiser3 */
4464 || sfs.f_type == 0x01021994 /* tmpfs */
4465 || sfs.f_type == 0x58465342 /* xfs */))
4466 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
4467 else
4468 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2685 { 4469 }
4470 else
4471 {
4472 /* can't use inotify, continue to stat */
2686 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4473 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2687 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2688 4474
2689 /* monitor some parent directory for speedup hints */ 4475 /* if path is not there, monitor some parent directory for speedup hints */
2690 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 4476 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2691 /* but an efficiency issue only */ 4477 /* but an efficiency issue only */
2692 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 4478 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2693 { 4479 {
2694 char path [4096]; 4480 char path [4096];
… …
2704 if (!pend || pend == path) 4490 if (!pend || pend == path)
2705 break; 4491 break;
2706 4492
2707 *pend = 0; 4493 *pend = 0;
2708 w->wd = inotify_add_watch (fs_fd, path, mask); 4494 w->wd = inotify_add_watch (fs_fd, path, mask);
2709 } 4495 }
2710 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 4496 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2711 } 4497 }
2712 } 4498 }
2713 4499
2714 if (w->wd >= 0) 4500 if (w->wd >= 0)
2715 {
2716 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4501 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2717 4502
2718 /* now local changes will be tracked by inotify, but remote changes won't */ 4503 /* now re-arm timer, if required */
2719 /* unless the filesystem it known to be local, we therefore still poll */ 4504 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2720 /* also do poll on <2.6.25, but with normal frequency */
2721 struct statfs sfs;
2722
2723 if (fs_2625 && !statfs (w->path, &sfs))
2724 if (sfs.f_type == 0x1373 /* devfs */
2725 || sfs.f_type == 0xEF53 /* ext2/3 */
2726 || sfs.f_type == 0x3153464a /* jfs */
2727 || sfs.f_type == 0x52654973 /* reiser3 */
2728 || sfs.f_type == 0x01021994 /* tempfs */
2729 || sfs.f_type == 0x58465342 /* xfs */)
2730 return;
2731
2732 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2733 ev_timer_again (EV_A_ &w->timer); 4505 ev_timer_again (EV_A_ &w->timer);
2734 } 4506 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2735} 4507}
2736 4508
2737static void noinline 4509ecb_noinline
4510static void
2738infy_del (EV_P_ ev_stat *w) 4511infy_del (EV_P_ ev_stat *w)
2739{ 4512{
2740 int slot; 4513 int slot;
2741 int wd = w->wd; 4514 int wd = w->wd;
2742 4515
2743 if (wd < 0) 4516 if (wd < 0)
2744 return; 4517 return;
2745 4518
2746 w->wd = -2; 4519 w->wd = -2;
2747 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 4520 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2748 wlist_del (&fs_hash [slot].head, (WL)w); 4521 wlist_del (&fs_hash [slot].head, (WL)w);
2749 4522
2750 /* remove this watcher, if others are watching it, they will rearm */ 4523 /* remove this watcher, if others are watching it, they will rearm */
2751 inotify_rm_watch (fs_fd, wd); 4524 inotify_rm_watch (fs_fd, wd);
2752} 4525}
2753 4526
2754static void noinline 4527ecb_noinline
4528static void
2755infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4529infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2756{ 4530{
2757 if (slot < 0) 4531 if (slot < 0)
2758 /* overflow, need to check for all hash slots */ 4532 /* overflow, need to check for all hash slots */
2759 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4533 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2760 infy_wd (EV_A_ slot, wd, ev); 4534 infy_wd (EV_A_ slot, wd, ev);
2761 else 4535 else
2762 { 4536 {
2763 WL w_; 4537 WL w_;
2764 4538
2765 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 4539 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2766 { 4540 {
2767 ev_stat *w = (ev_stat *)w_; 4541 ev_stat *w = (ev_stat *)w_;
2768 w_ = w_->next; /* lets us remove this watcher and all before it */ 4542 w_ = w_->next; /* lets us remove this watcher and all before it */
2769 4543
2770 if (w->wd == wd || wd == -1) 4544 if (w->wd == wd || wd == -1)
2771 { 4545 {
2772 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 4546 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2773 { 4547 {
2774 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4548 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2775 w->wd = -1; 4549 w->wd = -1;
2776 infy_add (EV_A_ w); /* re-add, no matter what */ 4550 infy_add (EV_A_ w); /* re-add, no matter what */
2777 } 4551 }
2778 4552
2779 stat_timer_cb (EV_A_ &w->timer, 0); 4553 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2784 4558
2785static void 4559static void
2786infy_cb (EV_P_ ev_io *w, int revents) 4560infy_cb (EV_P_ ev_io *w, int revents)
2787{ 4561{
2788 char buf [EV_INOTIFY_BUFSIZE]; 4562 char buf [EV_INOTIFY_BUFSIZE];
2789 struct inotify_event *ev = (struct inotify_event *)buf;
2790 int ofs; 4563 int ofs;
2791 int len = read (fs_fd, buf, sizeof (buf)); 4564 int len = read (fs_fd, buf, sizeof (buf));
2792 4565
2793 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 4566 for (ofs = 0; ofs < len; )
4567 {
4568 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2794 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4569 infy_wd (EV_A_ ev->wd, ev->wd, ev);
4570 ofs += sizeof (struct inotify_event) + ev->len;
4571 }
2795} 4572}
2796 4573
2797inline_size void 4574inline_size ecb_cold
4575void
2798check_2625 (EV_P) 4576ev_check_2625 (EV_P)
2799{ 4577{
2800 /* kernels < 2.6.25 are borked 4578 /* kernels < 2.6.25 are borked
2801 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4579 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2802 */ 4580 */
2803 struct utsname buf; 4581 if (ev_linux_version () < 0x020619)
2804 int major, minor, micro;
2805
2806 if (uname (&buf))
2807 return; 4582 return;
2808 4583
2809 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2810 return;
2811
2812 if (major < 2
2813 || (major == 2 && minor < 6)
2814 || (major == 2 && minor == 6 && micro < 25))
2815 return;
2816
2817 fs_2625 = 1; 4584 fs_2625 = 1;
4585}
4586
4587inline_size int
4588infy_newfd (void)
4589{
4590#if defined IN_CLOEXEC && defined IN_NONBLOCK
4591 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
4592 if (fd >= 0)
4593 return fd;
4594#endif
4595 return inotify_init ();
2818} 4596}
2819 4597
2820inline_size void 4598inline_size void
2821infy_init (EV_P) 4599infy_init (EV_P)
2822{ 4600{
2823 if (fs_fd != -2) 4601 if (fs_fd != -2)
2824 return; 4602 return;
2825 4603
2826 fs_fd = -1; 4604 fs_fd = -1;
2827 4605
2828 check_2625 (EV_A); 4606 ev_check_2625 (EV_A);
2829 4607
2830 fs_fd = inotify_init (); 4608 fs_fd = infy_newfd ();
2831 4609
2832 if (fs_fd >= 0) 4610 if (fs_fd >= 0)
2833 { 4611 {
4612 fd_intern (fs_fd);
2834 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 4613 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2835 ev_set_priority (&fs_w, EV_MAXPRI); 4614 ev_set_priority (&fs_w, EV_MAXPRI);
2836 ev_io_start (EV_A_ &fs_w); 4615 ev_io_start (EV_A_ &fs_w);
4616 ev_unref (EV_A);
2837 } 4617 }
2838} 4618}
2839 4619
2840inline_size void 4620inline_size void
2841infy_fork (EV_P) 4621infy_fork (EV_P)
… …
2843 int slot; 4623 int slot;
2844 4624
2845 if (fs_fd < 0) 4625 if (fs_fd < 0)
2846 return; 4626 return;
2847 4627
4628 ev_ref (EV_A);
4629 ev_io_stop (EV_A_ &fs_w);
2848 close (fs_fd); 4630 close (fs_fd);
2849 fs_fd = inotify_init (); 4631 fs_fd = infy_newfd ();
2850 4632
4633 if (fs_fd >= 0)
4634 {
4635 fd_intern (fs_fd);
4636 ev_io_set (&fs_w, fs_fd, EV_READ);
4637 ev_io_start (EV_A_ &fs_w);
4638 ev_unref (EV_A);
4639 }
4640
2851 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4641 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2852 { 4642 {
2853 WL w_ = fs_hash [slot].head; 4643 WL w_ = fs_hash [slot].head;
2854 fs_hash [slot].head = 0; 4644 fs_hash [slot].head = 0;
2855 4645
2856 while (w_) 4646 while (w_)
… …
2861 w->wd = -1; 4651 w->wd = -1;
2862 4652
2863 if (fs_fd >= 0) 4653 if (fs_fd >= 0)
2864 infy_add (EV_A_ w); /* re-add, no matter what */ 4654 infy_add (EV_A_ w); /* re-add, no matter what */
2865 else 4655 else
4656 {
4657 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
4658 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2866 ev_timer_again (EV_A_ &w->timer); 4659 ev_timer_again (EV_A_ &w->timer);
4660 if (ev_is_active (&w->timer)) ev_unref (EV_A);
4661 }
2867 } 4662 }
2868 } 4663 }
2869} 4664}
2870 4665
2871#endif 4666#endif
… …
2875#else 4670#else
2876# define EV_LSTAT(p,b) lstat (p, b) 4671# define EV_LSTAT(p,b) lstat (p, b)
2877#endif 4672#endif
2878 4673
2879void 4674void
2880ev_stat_stat (EV_P_ ev_stat *w) 4675ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
2881{ 4676{
2882 if (lstat (w->path, &w->attr) < 0) 4677 if (lstat (w->path, &w->attr) < 0)
2883 w->attr.st_nlink = 0; 4678 w->attr.st_nlink = 0;
2884 else if (!w->attr.st_nlink) 4679 else if (!w->attr.st_nlink)
2885 w->attr.st_nlink = 1; 4680 w->attr.st_nlink = 1;
2886} 4681}
2887 4682
2888static void noinline 4683ecb_noinline
4684static void
2889stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4685stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2890{ 4686{
2891 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4687 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2892 4688
2893 /* we copy this here each the time so that */ 4689 ev_statdata prev = w->attr;
2894 /* prev has the old value when the callback gets invoked */
2895 w->prev = w->attr;
2896 ev_stat_stat (EV_A_ w); 4690 ev_stat_stat (EV_A_ w);
2897 4691
2898 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 4692 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2899 if ( 4693 if (
2900 w->prev.st_dev != w->attr.st_dev 4694 prev.st_dev != w->attr.st_dev
2901 || w->prev.st_ino != w->attr.st_ino 4695 || prev.st_ino != w->attr.st_ino
2902 || w->prev.st_mode != w->attr.st_mode 4696 || prev.st_mode != w->attr.st_mode
2903 || w->prev.st_nlink != w->attr.st_nlink 4697 || prev.st_nlink != w->attr.st_nlink
2904 || w->prev.st_uid != w->attr.st_uid 4698 || prev.st_uid != w->attr.st_uid
2905 || w->prev.st_gid != w->attr.st_gid 4699 || prev.st_gid != w->attr.st_gid
2906 || w->prev.st_rdev != w->attr.st_rdev 4700 || prev.st_rdev != w->attr.st_rdev
2907 || w->prev.st_size != w->attr.st_size 4701 || prev.st_size != w->attr.st_size
2908 || w->prev.st_atime != w->attr.st_atime 4702 || prev.st_atime != w->attr.st_atime
2909 || w->prev.st_mtime != w->attr.st_mtime 4703 || prev.st_mtime != w->attr.st_mtime
2910 || w->prev.st_ctime != w->attr.st_ctime 4704 || prev.st_ctime != w->attr.st_ctime
2911 ) { 4705 ) {
4706 /* we only update w->prev on actual differences */
4707 /* in case we test more often than invoke the callback, */
4708 /* to ensure that prev is always different to attr */
4709 w->prev = prev;
4710
2912 #if EV_USE_INOTIFY 4711 #if EV_USE_INOTIFY
2913 if (fs_fd >= 0) 4712 if (fs_fd >= 0)
2914 { 4713 {
2915 infy_del (EV_A_ w); 4714 infy_del (EV_A_ w);
2916 infy_add (EV_A_ w); 4715 infy_add (EV_A_ w);
… …
2921 ev_feed_event (EV_A_ w, EV_STAT); 4720 ev_feed_event (EV_A_ w, EV_STAT);
2922 } 4721 }
2923} 4722}
2924 4723
2925void 4724void
2926ev_stat_start (EV_P_ ev_stat *w) 4725ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
2927{ 4726{
2928 if (expect_false (ev_is_active (w))) 4727 if (ecb_expect_false (ev_is_active (w)))
2929 return; 4728 return;
2930 4729
2931 ev_stat_stat (EV_A_ w); 4730 ev_stat_stat (EV_A_ w);
2932 4731
2933 if (w->interval < MIN_STAT_INTERVAL && w->interval) 4732 if (w->interval < MIN_STAT_INTERVAL && w->interval)
… …
2941 4740
2942 if (fs_fd >= 0) 4741 if (fs_fd >= 0)
2943 infy_add (EV_A_ w); 4742 infy_add (EV_A_ w);
2944 else 4743 else
2945#endif 4744#endif
4745 {
2946 ev_timer_again (EV_A_ &w->timer); 4746 ev_timer_again (EV_A_ &w->timer);
4747 ev_unref (EV_A);
4748 }
2947 4749
2948 ev_start (EV_A_ (W)w, 1); 4750 ev_start (EV_A_ (W)w, 1);
2949 4751
2950 EV_FREQUENT_CHECK; 4752 EV_FREQUENT_CHECK;
2951} 4753}
2952 4754
2953void 4755void
2954ev_stat_stop (EV_P_ ev_stat *w) 4756ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
2955{ 4757{
2956 clear_pending (EV_A_ (W)w); 4758 clear_pending (EV_A_ (W)w);
2957 if (expect_false (!ev_is_active (w))) 4759 if (ecb_expect_false (!ev_is_active (w)))
2958 return; 4760 return;
2959 4761
2960 EV_FREQUENT_CHECK; 4762 EV_FREQUENT_CHECK;
2961 4763
2962#if EV_USE_INOTIFY 4764#if EV_USE_INOTIFY
2963 infy_del (EV_A_ w); 4765 infy_del (EV_A_ w);
2964#endif 4766#endif
4767
4768 if (ev_is_active (&w->timer))
4769 {
4770 ev_ref (EV_A);
2965 ev_timer_stop (EV_A_ &w->timer); 4771 ev_timer_stop (EV_A_ &w->timer);
4772 }
2966 4773
2967 ev_stop (EV_A_ (W)w); 4774 ev_stop (EV_A_ (W)w);
2968 4775
2969 EV_FREQUENT_CHECK; 4776 EV_FREQUENT_CHECK;
2970} 4777}
2971#endif 4778#endif
2972 4779
2973#if EV_IDLE_ENABLE 4780#if EV_IDLE_ENABLE
2974void 4781void
2975ev_idle_start (EV_P_ ev_idle *w) 4782ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
2976{ 4783{
2977 if (expect_false (ev_is_active (w))) 4784 if (ecb_expect_false (ev_is_active (w)))
2978 return; 4785 return;
2979 4786
2980 pri_adjust (EV_A_ (W)w); 4787 pri_adjust (EV_A_ (W)w);
2981 4788
2982 EV_FREQUENT_CHECK; 4789 EV_FREQUENT_CHECK;
… …
2985 int active = ++idlecnt [ABSPRI (w)]; 4792 int active = ++idlecnt [ABSPRI (w)];
2986 4793
2987 ++idleall; 4794 ++idleall;
2988 ev_start (EV_A_ (W)w, active); 4795 ev_start (EV_A_ (W)w, active);
2989 4796
2990 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 4797 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
2991 idles [ABSPRI (w)][active - 1] = w; 4798 idles [ABSPRI (w)][active - 1] = w;
2992 } 4799 }
2993 4800
2994 EV_FREQUENT_CHECK; 4801 EV_FREQUENT_CHECK;
2995} 4802}
2996 4803
2997void 4804void
2998ev_idle_stop (EV_P_ ev_idle *w) 4805ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
2999{ 4806{
3000 clear_pending (EV_A_ (W)w); 4807 clear_pending (EV_A_ (W)w);
3001 if (expect_false (!ev_is_active (w))) 4808 if (ecb_expect_false (!ev_is_active (w)))
3002 return; 4809 return;
3003 4810
3004 EV_FREQUENT_CHECK; 4811 EV_FREQUENT_CHECK;
3005 4812
3006 { 4813 {
… …
3015 4822
3016 EV_FREQUENT_CHECK; 4823 EV_FREQUENT_CHECK;
3017} 4824}
3018#endif 4825#endif
3019 4826
4827#if EV_PREPARE_ENABLE
3020void 4828void
3021ev_prepare_start (EV_P_ ev_prepare *w) 4829ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
3022{ 4830{
3023 if (expect_false (ev_is_active (w))) 4831 if (ecb_expect_false (ev_is_active (w)))
3024 return; 4832 return;
3025 4833
3026 EV_FREQUENT_CHECK; 4834 EV_FREQUENT_CHECK;
3027 4835
3028 ev_start (EV_A_ (W)w, ++preparecnt); 4836 ev_start (EV_A_ (W)w, ++preparecnt);
3029 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4837 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
3030 prepares [preparecnt - 1] = w; 4838 prepares [preparecnt - 1] = w;
3031 4839
3032 EV_FREQUENT_CHECK; 4840 EV_FREQUENT_CHECK;
3033} 4841}
3034 4842
3035void 4843void
3036ev_prepare_stop (EV_P_ ev_prepare *w) 4844ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
3037{ 4845{
3038 clear_pending (EV_A_ (W)w); 4846 clear_pending (EV_A_ (W)w);
3039 if (expect_false (!ev_is_active (w))) 4847 if (ecb_expect_false (!ev_is_active (w)))
3040 return; 4848 return;
3041 4849
3042 EV_FREQUENT_CHECK; 4850 EV_FREQUENT_CHECK;
3043 4851
3044 { 4852 {
… …
3050 4858
3051 ev_stop (EV_A_ (W)w); 4859 ev_stop (EV_A_ (W)w);
3052 4860
3053 EV_FREQUENT_CHECK; 4861 EV_FREQUENT_CHECK;
3054} 4862}
4863#endif
3055 4864
4865#if EV_CHECK_ENABLE
3056void 4866void
3057ev_check_start (EV_P_ ev_check *w) 4867ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
3058{ 4868{
3059 if (expect_false (ev_is_active (w))) 4869 if (ecb_expect_false (ev_is_active (w)))
3060 return; 4870 return;
3061 4871
3062 EV_FREQUENT_CHECK; 4872 EV_FREQUENT_CHECK;
3063 4873
3064 ev_start (EV_A_ (W)w, ++checkcnt); 4874 ev_start (EV_A_ (W)w, ++checkcnt);
3065 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 4875 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
3066 checks [checkcnt - 1] = w; 4876 checks [checkcnt - 1] = w;
3067 4877
3068 EV_FREQUENT_CHECK; 4878 EV_FREQUENT_CHECK;
3069} 4879}
3070 4880
3071void 4881void
3072ev_check_stop (EV_P_ ev_check *w) 4882ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
3073{ 4883{
3074 clear_pending (EV_A_ (W)w); 4884 clear_pending (EV_A_ (W)w);
3075 if (expect_false (!ev_is_active (w))) 4885 if (ecb_expect_false (!ev_is_active (w)))
3076 return; 4886 return;
3077 4887
3078 EV_FREQUENT_CHECK; 4888 EV_FREQUENT_CHECK;
3079 4889
3080 { 4890 {
… …
3086 4896
3087 ev_stop (EV_A_ (W)w); 4897 ev_stop (EV_A_ (W)w);
3088 4898
3089 EV_FREQUENT_CHECK; 4899 EV_FREQUENT_CHECK;
3090} 4900}
4901#endif
3091 4902
3092#if EV_EMBED_ENABLE 4903#if EV_EMBED_ENABLE
3093void noinline 4904ecb_noinline
4905void
3094ev_embed_sweep (EV_P_ ev_embed *w) 4906ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
3095{ 4907{
3096 ev_loop (w->other, EVLOOP_NONBLOCK); 4908 ev_run (w->other, EVRUN_NOWAIT);
3097} 4909}
3098 4910
3099static void 4911static void
3100embed_io_cb (EV_P_ ev_io *io, int revents) 4912embed_io_cb (EV_P_ ev_io *io, int revents)
3101{ 4913{
3102 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4914 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3103 4915
3104 if (ev_cb (w)) 4916 if (ev_cb (w))
3105 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4917 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3106 else 4918 else
3107 ev_loop (w->other, EVLOOP_NONBLOCK); 4919 ev_run (w->other, EVRUN_NOWAIT);
3108} 4920}
3109 4921
3110static void 4922static void
3111embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4923embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3112{ 4924{
3113 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 4925 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
3114 4926
3115 { 4927 {
3116 struct ev_loop *loop = w->other; 4928 EV_P = w->other;
3117 4929
3118 while (fdchangecnt) 4930 while (fdchangecnt)
3119 { 4931 {
3120 fd_reify (EV_A); 4932 fd_reify (EV_A);
3121 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4933 ev_run (EV_A_ EVRUN_NOWAIT);
3122 } 4934 }
3123 } 4935 }
3124} 4936}
3125 4937
3126static void 4938static void
… …
3129 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 4941 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3130 4942
3131 ev_embed_stop (EV_A_ w); 4943 ev_embed_stop (EV_A_ w);
3132 4944
3133 { 4945 {
3134 struct ev_loop *loop = w->other; 4946 EV_P = w->other;
3135 4947
3136 ev_loop_fork (EV_A); 4948 ev_loop_fork (EV_A);
3137 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4949 ev_run (EV_A_ EVRUN_NOWAIT);
3138 } 4950 }
3139 4951
3140 ev_embed_start (EV_A_ w); 4952 ev_embed_start (EV_A_ w);
3141} 4953}
3142 4954
… …
3147 ev_idle_stop (EV_A_ idle); 4959 ev_idle_stop (EV_A_ idle);
3148} 4960}
3149#endif 4961#endif
3150 4962
3151void 4963void
3152ev_embed_start (EV_P_ ev_embed *w) 4964ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
3153{ 4965{
3154 if (expect_false (ev_is_active (w))) 4966 if (ecb_expect_false (ev_is_active (w)))
3155 return; 4967 return;
3156 4968
3157 { 4969 {
3158 struct ev_loop *loop = w->other; 4970 EV_P = w->other;
3159 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4971 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
3160 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 4972 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3161 } 4973 }
3162 4974
3163 EV_FREQUENT_CHECK; 4975 EV_FREQUENT_CHECK;
… …
3178 4990
3179 EV_FREQUENT_CHECK; 4991 EV_FREQUENT_CHECK;
3180} 4992}
3181 4993
3182void 4994void
3183ev_embed_stop (EV_P_ ev_embed *w) 4995ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
3184{ 4996{
3185 clear_pending (EV_A_ (W)w); 4997 clear_pending (EV_A_ (W)w);
3186 if (expect_false (!ev_is_active (w))) 4998 if (ecb_expect_false (!ev_is_active (w)))
3187 return; 4999 return;
3188 5000
3189 EV_FREQUENT_CHECK; 5001 EV_FREQUENT_CHECK;
3190 5002
3191 ev_io_stop (EV_A_ &w->io); 5003 ev_io_stop (EV_A_ &w->io);
3192 ev_prepare_stop (EV_A_ &w->prepare); 5004 ev_prepare_stop (EV_A_ &w->prepare);
3193 ev_fork_stop (EV_A_ &w->fork); 5005 ev_fork_stop (EV_A_ &w->fork);
3194 5006
5007 ev_stop (EV_A_ (W)w);
5008
3195 EV_FREQUENT_CHECK; 5009 EV_FREQUENT_CHECK;
3196} 5010}
3197#endif 5011#endif
3198 5012
3199#if EV_FORK_ENABLE 5013#if EV_FORK_ENABLE
3200void 5014void
3201ev_fork_start (EV_P_ ev_fork *w) 5015ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
3202{ 5016{
3203 if (expect_false (ev_is_active (w))) 5017 if (ecb_expect_false (ev_is_active (w)))
3204 return; 5018 return;
3205 5019
3206 EV_FREQUENT_CHECK; 5020 EV_FREQUENT_CHECK;
3207 5021
3208 ev_start (EV_A_ (W)w, ++forkcnt); 5022 ev_start (EV_A_ (W)w, ++forkcnt);
3209 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 5023 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
3210 forks [forkcnt - 1] = w; 5024 forks [forkcnt - 1] = w;
3211 5025
3212 EV_FREQUENT_CHECK; 5026 EV_FREQUENT_CHECK;
3213} 5027}
3214 5028
3215void 5029void
3216ev_fork_stop (EV_P_ ev_fork *w) 5030ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
3217{ 5031{
3218 clear_pending (EV_A_ (W)w); 5032 clear_pending (EV_A_ (W)w);
3219 if (expect_false (!ev_is_active (w))) 5033 if (ecb_expect_false (!ev_is_active (w)))
3220 return; 5034 return;
3221 5035
3222 EV_FREQUENT_CHECK; 5036 EV_FREQUENT_CHECK;
3223 5037
3224 { 5038 {
… …
3232 5046
3233 EV_FREQUENT_CHECK; 5047 EV_FREQUENT_CHECK;
3234} 5048}
3235#endif 5049#endif
3236 5050
5051#if EV_CLEANUP_ENABLE
5052void
5053ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
5054{
5055 if (ecb_expect_false (ev_is_active (w)))
5056 return;
5057
5058 EV_FREQUENT_CHECK;
5059
5060 ev_start (EV_A_ (W)w, ++cleanupcnt);
5061 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
5062 cleanups [cleanupcnt - 1] = w;
5063
5064 /* cleanup watchers should never keep a refcount on the loop */
5065 ev_unref (EV_A);
5066 EV_FREQUENT_CHECK;
5067}
5068
5069void
5070ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
5071{
5072 clear_pending (EV_A_ (W)w);
5073 if (ecb_expect_false (!ev_is_active (w)))
5074 return;
5075
5076 EV_FREQUENT_CHECK;
5077 ev_ref (EV_A);
5078
5079 {
5080 int active = ev_active (w);
5081
5082 cleanups [active - 1] = cleanups [--cleanupcnt];
5083 ev_active (cleanups [active - 1]) = active;
5084 }
5085
5086 ev_stop (EV_A_ (W)w);
5087
5088 EV_FREQUENT_CHECK;
5089}
5090#endif
5091
3237#if EV_ASYNC_ENABLE 5092#if EV_ASYNC_ENABLE
3238void 5093void
3239ev_async_start (EV_P_ ev_async *w) 5094ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
3240{ 5095{
3241 if (expect_false (ev_is_active (w))) 5096 if (ecb_expect_false (ev_is_active (w)))
3242 return; 5097 return;
3243 5098
5099 w->sent = 0;
5100
3244 evpipe_init (EV_A); 5101 evpipe_init (EV_A);
3245 5102
3246 EV_FREQUENT_CHECK; 5103 EV_FREQUENT_CHECK;
3247 5104
3248 ev_start (EV_A_ (W)w, ++asynccnt); 5105 ev_start (EV_A_ (W)w, ++asynccnt);
3249 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 5106 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
3250 asyncs [asynccnt - 1] = w; 5107 asyncs [asynccnt - 1] = w;
3251 5108
3252 EV_FREQUENT_CHECK; 5109 EV_FREQUENT_CHECK;
3253} 5110}
3254 5111
3255void 5112void
3256ev_async_stop (EV_P_ ev_async *w) 5113ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
3257{ 5114{
3258 clear_pending (EV_A_ (W)w); 5115 clear_pending (EV_A_ (W)w);
3259 if (expect_false (!ev_is_active (w))) 5116 if (ecb_expect_false (!ev_is_active (w)))
3260 return; 5117 return;
3261 5118
3262 EV_FREQUENT_CHECK; 5119 EV_FREQUENT_CHECK;
3263 5120
3264 { 5121 {
… …
3272 5129
3273 EV_FREQUENT_CHECK; 5130 EV_FREQUENT_CHECK;
3274} 5131}
3275 5132
3276void 5133void
3277ev_async_send (EV_P_ ev_async *w) 5134ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
3278{ 5135{
3279 w->sent = 1; 5136 w->sent = 1;
3280 evpipe_write (EV_A_ &gotasync); 5137 evpipe_write (EV_A_ &async_pending);
3281} 5138}
3282#endif 5139#endif
3283 5140
3284/*****************************************************************************/ 5141/*****************************************************************************/
3285 5142
… …
3319 5176
3320 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5177 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3321} 5178}
3322 5179
3323void 5180void
3324ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 5181ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
3325{ 5182{
3326 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5183 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3327
3328 if (expect_false (!once))
3329 {
3330 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
3331 return;
3332 }
3333 5184
3334 once->cb = cb; 5185 once->cb = cb;
3335 once->arg = arg; 5186 once->arg = arg;
3336 5187
3337 ev_init (&once->io, once_cb_io); 5188 ev_init (&once->io, once_cb_io);
… …
3350} 5201}
3351 5202
3352/*****************************************************************************/ 5203/*****************************************************************************/
3353 5204
3354#if EV_WALK_ENABLE 5205#if EV_WALK_ENABLE
5206ecb_cold
3355void 5207void
3356ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 5208ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
3357{ 5209{
3358 int i, j; 5210 int i, j;
3359 ev_watcher_list *wl, *wn; 5211 ev_watcher_list *wl, *wn;
3360 5212
3361 if (types & (EV_IO | EV_EMBED)) 5213 if (types & (EV_IO | EV_EMBED))
… …
3404 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 5256 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3405#endif 5257#endif
3406 5258
3407#if EV_IDLE_ENABLE 5259#if EV_IDLE_ENABLE
3408 if (types & EV_IDLE) 5260 if (types & EV_IDLE)
3409 for (j = NUMPRI; i--; ) 5261 for (j = NUMPRI; j--; )
3410 for (i = idlecnt [j]; i--; ) 5262 for (i = idlecnt [j]; i--; )
3411 cb (EV_A_ EV_IDLE, idles [j][i]); 5263 cb (EV_A_ EV_IDLE, idles [j][i]);
3412#endif 5264#endif
3413 5265
3414#if EV_FORK_ENABLE 5266#if EV_FORK_ENABLE
… …
3422 if (types & EV_ASYNC) 5274 if (types & EV_ASYNC)
3423 for (i = asynccnt; i--; ) 5275 for (i = asynccnt; i--; )
3424 cb (EV_A_ EV_ASYNC, asyncs [i]); 5276 cb (EV_A_ EV_ASYNC, asyncs [i]);
3425#endif 5277#endif
3426 5278
5279#if EV_PREPARE_ENABLE
3427 if (types & EV_PREPARE) 5280 if (types & EV_PREPARE)
3428 for (i = preparecnt; i--; ) 5281 for (i = preparecnt; i--; )
3429#if EV_EMBED_ENABLE 5282# if EV_EMBED_ENABLE
3430 if (ev_cb (prepares [i]) != embed_prepare_cb) 5283 if (ev_cb (prepares [i]) != embed_prepare_cb)
3431#endif 5284# endif
3432 cb (EV_A_ EV_PREPARE, prepares [i]); 5285 cb (EV_A_ EV_PREPARE, prepares [i]);
5286#endif
3433 5287
5288#if EV_CHECK_ENABLE
3434 if (types & EV_CHECK) 5289 if (types & EV_CHECK)
3435 for (i = checkcnt; i--; ) 5290 for (i = checkcnt; i--; )
3436 cb (EV_A_ EV_CHECK, checks [i]); 5291 cb (EV_A_ EV_CHECK, checks [i]);
5292#endif
3437 5293
5294#if EV_SIGNAL_ENABLE
3438 if (types & EV_SIGNAL) 5295 if (types & EV_SIGNAL)
3439 for (i = 0; i < signalmax; ++i) 5296 for (i = 0; i < EV_NSIG - 1; ++i)
3440 for (wl = signals [i].head; wl; ) 5297 for (wl = signals [i].head; wl; )
3441 { 5298 {
3442 wn = wl->next; 5299 wn = wl->next;
3443 cb (EV_A_ EV_SIGNAL, wl); 5300 cb (EV_A_ EV_SIGNAL, wl);
3444 wl = wn; 5301 wl = wn;
3445 } 5302 }
5303#endif
3446 5304
5305#if EV_CHILD_ENABLE
3447 if (types & EV_CHILD) 5306 if (types & EV_CHILD)
3448 for (i = EV_PID_HASHSIZE; i--; ) 5307 for (i = (EV_PID_HASHSIZE); i--; )
3449 for (wl = childs [i]; wl; ) 5308 for (wl = childs [i]; wl; )
3450 { 5309 {
3451 wn = wl->next; 5310 wn = wl->next;
3452 cb (EV_A_ EV_CHILD, wl); 5311 cb (EV_A_ EV_CHILD, wl);
3453 wl = wn; 5312 wl = wn;
3454 } 5313 }
5314#endif
3455/* EV_STAT 0x00001000 /* stat data changed */ 5315/* EV_STAT 0x00001000 /* stat data changed */
3456/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 5316/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3457} 5317}
3458#endif 5318#endif
3459 5319
3460#if EV_MULTIPLICITY 5320#if EV_MULTIPLICITY
3461 #include "ev_wrap.h" 5321 #include "ev_wrap.h"
3462#endif 5322#endif
3463 5323
3464#ifdef __cplusplus
3465}
3466#endif
3467

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