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Comparing libev/ev.c (file contents):
Revision 1.298 by root, Fri Jul 10 19:10:19 2009 UTC vs.
Revision 1.492 by root, Sat Jun 22 16:25:53 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
239#ifndef EV_USE_INOTIFY 337#ifndef EV_USE_INOTIFY
240# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 338# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
241# define EV_USE_INOTIFY 1 339# define EV_USE_INOTIFY EV_FEATURE_OS
242# else 340# else
243# define EV_USE_INOTIFY 0 341# define EV_USE_INOTIFY 0
244# endif 342# endif
245#endif 343#endif
246 344
247#ifndef EV_PID_HASHSIZE 345#ifndef EV_PID_HASHSIZE
248# if EV_MINIMAL 346# 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 347#endif
254 348
255#ifndef EV_INOTIFY_HASHSIZE 349#ifndef EV_INOTIFY_HASHSIZE
256# if EV_MINIMAL 350# 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 351#endif
262 352
263#ifndef EV_USE_EVENTFD 353#ifndef EV_USE_EVENTFD
264# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 354# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
265# define EV_USE_EVENTFD 1 355# define EV_USE_EVENTFD EV_FEATURE_OS
266# else 356# else
267# define EV_USE_EVENTFD 0 357# define EV_USE_EVENTFD 0
358# endif
359#endif
360
361#ifndef EV_USE_SIGNALFD
362# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
363# define EV_USE_SIGNALFD EV_FEATURE_OS
364# else
365# define EV_USE_SIGNALFD 0
268# endif 366# endif
269#endif 367#endif
270 368
271#if 0 /* debugging */ 369#if 0 /* debugging */
272# define EV_VERIFY 3 370# define EV_VERIFY 3
273# define EV_USE_4HEAP 1 371# define EV_USE_4HEAP 1
274# define EV_HEAP_CACHE_AT 1 372# define EV_HEAP_CACHE_AT 1
275#endif 373#endif
276 374
277#ifndef EV_VERIFY 375#ifndef EV_VERIFY
278# define EV_VERIFY !EV_MINIMAL 376# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
279#endif 377#endif
280 378
281#ifndef EV_USE_4HEAP 379#ifndef EV_USE_4HEAP
282# define EV_USE_4HEAP !EV_MINIMAL 380# define EV_USE_4HEAP EV_FEATURE_DATA
283#endif 381#endif
284 382
285#ifndef EV_HEAP_CACHE_AT 383#ifndef EV_HEAP_CACHE_AT
286# define EV_HEAP_CACHE_AT !EV_MINIMAL 384# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
385#endif
386
387#ifdef __ANDROID__
388/* supposedly, android doesn't typedef fd_mask */
389# undef EV_USE_SELECT
390# define EV_USE_SELECT 0
391/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
392# undef EV_USE_CLOCK_SYSCALL
393# define EV_USE_CLOCK_SYSCALL 0
394#endif
395
396/* aix's poll.h seems to cause lots of trouble */
397#ifdef _AIX
398/* AIX has a completely broken poll.h header */
399# undef EV_USE_POLL
400# define EV_USE_POLL 0
401#endif
402
403#if EV_USE_LINUXAIO
404# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
287#endif 405#endif
288 406
289/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 407/* 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. */ 408/* which makes programs even slower. might work on other unices, too. */
291#if EV_USE_CLOCK_SYSCALL 409#if EV_USE_CLOCK_SYSCALL
292# include <syscall.h> 410# include <sys/syscall.h>
293# ifdef SYS_clock_gettime 411# ifdef SYS_clock_gettime
294# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 412# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
295# undef EV_USE_MONOTONIC 413# undef EV_USE_MONOTONIC
296# define EV_USE_MONOTONIC 1 414# define EV_USE_MONOTONIC 1
297# else 415# else
… …
316# undef EV_USE_INOTIFY 434# undef EV_USE_INOTIFY
317# define EV_USE_INOTIFY 0 435# define EV_USE_INOTIFY 0
318#endif 436#endif
319 437
320#if !EV_USE_NANOSLEEP 438#if !EV_USE_NANOSLEEP
321# ifndef _WIN32 439/* hp-ux has it in sys/time.h, which we unconditionally include above */
440# if !defined _WIN32 && !defined __hpux
322# include <sys/select.h> 441# include <sys/select.h>
323# endif 442# endif
324#endif 443#endif
325 444
445#if EV_USE_LINUXAIO
446# include <sys/syscall.h>
447# if !SYS_io_getevents
448# undef EV_USE_LINUXAIO
449# define EV_USE_LINUXAIO 0
450# endif
451#endif
452
326#if EV_USE_INOTIFY 453#if EV_USE_INOTIFY
327# include <sys/utsname.h>
328# include <sys/statfs.h> 454# include <sys/statfs.h>
329# include <sys/inotify.h> 455# include <sys/inotify.h>
330/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 456/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
331# ifndef IN_DONT_FOLLOW 457# ifndef IN_DONT_FOLLOW
332# undef EV_USE_INOTIFY 458# undef EV_USE_INOTIFY
333# define EV_USE_INOTIFY 0 459# define EV_USE_INOTIFY 0
334# endif 460# endif
335#endif 461#endif
336 462
337#if EV_SELECT_IS_WINSOCKET
338# include <winsock.h>
339#endif
340
341#if EV_USE_EVENTFD 463#if EV_USE_EVENTFD
342/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 464/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
343# include <stdint.h> 465# include <stdint.h>
344# ifdef __cplusplus 466# ifndef EFD_NONBLOCK
345extern "C" { 467# define EFD_NONBLOCK O_NONBLOCK
346# endif 468# endif
347int eventfd (unsigned int initval, int flags); 469# ifndef EFD_CLOEXEC
348# ifdef __cplusplus 470# ifdef O_CLOEXEC
349} 471# define EFD_CLOEXEC O_CLOEXEC
472# else
473# define EFD_CLOEXEC 02000000
474# endif
350# endif 475# endif
476EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
477#endif
478
479#if EV_USE_SIGNALFD
480/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
481# include <stdint.h>
482# ifndef SFD_NONBLOCK
483# define SFD_NONBLOCK O_NONBLOCK
484# endif
485# ifndef SFD_CLOEXEC
486# ifdef O_CLOEXEC
487# define SFD_CLOEXEC O_CLOEXEC
488# else
489# define SFD_CLOEXEC 02000000
490# endif
491# endif
492EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
493
494struct signalfd_siginfo
495{
496 uint32_t ssi_signo;
497 char pad[128 - sizeof (uint32_t)];
498};
351#endif 499#endif
352 500
353/**/ 501/**/
354 502
355#if EV_VERIFY >= 3 503#if EV_VERIFY >= 3
356# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 504# define EV_FREQUENT_CHECK ev_verify (EV_A)
357#else 505#else
358# define EV_FREQUENT_CHECK do { } while (0) 506# define EV_FREQUENT_CHECK do { } while (0)
359#endif 507#endif
360 508
361/* 509/*
362 * This is used to avoid floating point rounding problems. 510 * 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. 511 * This value is good at least till the year 4000.
367 * Better solutions welcome.
368 */ 512 */
369#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 513#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
514/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
370 515
371#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 516#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) */ 517#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 */
374 518
519#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
520#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
521
522/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
523/* ECB.H BEGIN */
524/*
525 * libecb - http://software.schmorp.de/pkg/libecb
526 *
527 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
528 * Copyright (©) 2011 Emanuele Giaquinta
529 * All rights reserved.
530 *
531 * Redistribution and use in source and binary forms, with or without modifica-
532 * tion, are permitted provided that the following conditions are met:
533 *
534 * 1. Redistributions of source code must retain the above copyright notice,
535 * this list of conditions and the following disclaimer.
536 *
537 * 2. Redistributions in binary form must reproduce the above copyright
538 * notice, this list of conditions and the following disclaimer in the
539 * documentation and/or other materials provided with the distribution.
540 *
541 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
542 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
543 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
544 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
545 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
546 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
547 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
548 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
549 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
550 * OF THE POSSIBILITY OF SUCH DAMAGE.
551 *
552 * Alternatively, the contents of this file may be used under the terms of
553 * the GNU General Public License ("GPL") version 2 or any later version,
554 * in which case the provisions of the GPL are applicable instead of
555 * the above. If you wish to allow the use of your version of this file
556 * only under the terms of the GPL and not to allow others to use your
557 * version of this file under the BSD license, indicate your decision
558 * by deleting the provisions above and replace them with the notice
559 * and other provisions required by the GPL. If you do not delete the
560 * provisions above, a recipient may use your version of this file under
561 * either the BSD or the GPL.
562 */
563
564#ifndef ECB_H
565#define ECB_H
566
567/* 16 bits major, 16 bits minor */
568#define ECB_VERSION 0x00010005
569
570#ifdef _WIN32
571 typedef signed char int8_t;
572 typedef unsigned char uint8_t;
573 typedef signed short int16_t;
574 typedef unsigned short uint16_t;
575 typedef signed int int32_t;
576 typedef unsigned int uint32_t;
375#if __GNUC__ >= 4 577 #if __GNUC__
578 typedef signed long long int64_t;
579 typedef unsigned long long uint64_t;
580 #else /* _MSC_VER || __BORLANDC__ */
581 typedef signed __int64 int64_t;
582 typedef unsigned __int64 uint64_t;
583 #endif
584 #ifdef _WIN64
585 #define ECB_PTRSIZE 8
586 typedef uint64_t uintptr_t;
587 typedef int64_t intptr_t;
588 #else
589 #define ECB_PTRSIZE 4
590 typedef uint32_t uintptr_t;
591 typedef int32_t intptr_t;
592 #endif
593#else
594 #include <inttypes.h>
595 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
596 #define ECB_PTRSIZE 8
597 #else
598 #define ECB_PTRSIZE 4
599 #endif
600#endif
601
602#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
603#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
604
605/* work around x32 idiocy by defining proper macros */
606#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
607 #if _ILP32
608 #define ECB_AMD64_X32 1
609 #else
610 #define ECB_AMD64 1
611 #endif
612#endif
613
614/* many compilers define _GNUC_ to some versions but then only implement
615 * what their idiot authors think are the "more important" extensions,
616 * causing enormous grief in return for some better fake benchmark numbers.
617 * or so.
618 * we try to detect these and simply assume they are not gcc - if they have
619 * an issue with that they should have done it right in the first place.
620 */
621#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
622 #define ECB_GCC_VERSION(major,minor) 0
623#else
624 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
625#endif
626
627#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
628
629#if __clang__ && defined __has_builtin
630 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
631#else
632 #define ECB_CLANG_BUILTIN(x) 0
633#endif
634
635#if __clang__ && defined __has_extension
636 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
637#else
638 #define ECB_CLANG_EXTENSION(x) 0
639#endif
640
641#define ECB_CPP (__cplusplus+0)
642#define ECB_CPP11 (__cplusplus >= 201103L)
643#define ECB_CPP14 (__cplusplus >= 201402L)
644#define ECB_CPP17 (__cplusplus >= 201703L)
645
646#if ECB_CPP
647 #define ECB_C 0
648 #define ECB_STDC_VERSION 0
649#else
650 #define ECB_C 1
651 #define ECB_STDC_VERSION __STDC_VERSION__
652#endif
653
654#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
655#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
656#define ECB_C17 (ECB_STDC_VERSION >= 201710L)
657
658#if ECB_CPP
659 #define ECB_EXTERN_C extern "C"
660 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
661 #define ECB_EXTERN_C_END }
662#else
663 #define ECB_EXTERN_C extern
664 #define ECB_EXTERN_C_BEG
665 #define ECB_EXTERN_C_END
666#endif
667
668/*****************************************************************************/
669
670/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
671/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
672
673#if ECB_NO_THREADS
674 #define ECB_NO_SMP 1
675#endif
676
677#if ECB_NO_SMP
678 #define ECB_MEMORY_FENCE do { } while (0)
679#endif
680
681/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
682#if __xlC__ && ECB_CPP
683 #include <builtins.h>
684#endif
685
686#if 1400 <= _MSC_VER
687 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
688#endif
689
690#ifndef ECB_MEMORY_FENCE
691 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
692 #if __i386 || __i386__
693 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
694 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
695 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
696 #elif ECB_GCC_AMD64
697 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
698 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
699 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
700 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
701 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
702 #elif defined __ARM_ARCH_2__ \
703 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
704 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
705 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
706 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
707 || defined __ARM_ARCH_5TEJ__
708 /* should not need any, unless running old code on newer cpu - arm doesn't support that */
709 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
710 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
711 || defined __ARM_ARCH_6T2__
712 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
713 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
714 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
715 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
716 #elif __aarch64__
717 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
718 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
719 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
720 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
721 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
722 #elif defined __s390__ || defined __s390x__
723 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
724 #elif defined __mips__
725 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
726 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
727 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
728 #elif defined __alpha__
729 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
730 #elif defined __hppa__
731 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
732 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
733 #elif defined __ia64__
734 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
735 #elif defined __m68k__
736 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
737 #elif defined __m88k__
738 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
739 #elif defined __sh__
740 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
741 #endif
742 #endif
743#endif
744
745#ifndef ECB_MEMORY_FENCE
746 #if ECB_GCC_VERSION(4,7)
747 /* see comment below (stdatomic.h) about the C11 memory model. */
748 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
749 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
750 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
751
752 #elif ECB_CLANG_EXTENSION(c_atomic)
753 /* see comment below (stdatomic.h) about the C11 memory model. */
754 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
755 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
756 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
757
758 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
759 #define ECB_MEMORY_FENCE __sync_synchronize ()
760 #elif _MSC_VER >= 1500 /* VC++ 2008 */
761 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
762 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
763 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
764 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
765 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
766 #elif _MSC_VER >= 1400 /* VC++ 2005 */
767 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
768 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
769 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
770 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
771 #elif defined _WIN32
772 #include <WinNT.h>
773 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
774 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
775 #include <mbarrier.h>
776 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
777 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
778 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
779 #elif __xlC__
780 #define ECB_MEMORY_FENCE __sync ()
781 #endif
782#endif
783
784#ifndef ECB_MEMORY_FENCE
785 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
786 /* we assume that these memory fences work on all variables/all memory accesses, */
787 /* not just C11 atomics and atomic accesses */
788 #include <stdatomic.h>
789 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
790 /* any fence other than seq_cst, which isn't very efficient for us. */
791 /* Why that is, we don't know - either the C11 memory model is quite useless */
792 /* for most usages, or gcc and clang have a bug */
793 /* I *currently* lean towards the latter, and inefficiently implement */
794 /* all three of ecb's fences as a seq_cst fence */
795 /* Update, gcc-4.8 generates mfence for all c++ fences, but nothing */
796 /* for all __atomic_thread_fence's except seq_cst */
797 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
798 #endif
799#endif
800
801#ifndef ECB_MEMORY_FENCE
802 #if !ECB_AVOID_PTHREADS
803 /*
804 * if you get undefined symbol references to pthread_mutex_lock,
805 * or failure to find pthread.h, then you should implement
806 * the ECB_MEMORY_FENCE operations for your cpu/compiler
807 * OR provide pthread.h and link against the posix thread library
808 * of your system.
809 */
810 #include <pthread.h>
811 #define ECB_NEEDS_PTHREADS 1
812 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
813
814 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
815 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
816 #endif
817#endif
818
819#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
820 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
821#endif
822
823#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
824 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
825#endif
826
827/*****************************************************************************/
828
829#if ECB_CPP
830 #define ecb_inline static inline
831#elif ECB_GCC_VERSION(2,5)
832 #define ecb_inline static __inline__
833#elif ECB_C99
834 #define ecb_inline static inline
835#else
836 #define ecb_inline static
837#endif
838
839#if ECB_GCC_VERSION(3,3)
840 #define ecb_restrict __restrict__
841#elif ECB_C99
842 #define ecb_restrict restrict
843#else
844 #define ecb_restrict
845#endif
846
847typedef int ecb_bool;
848
849#define ECB_CONCAT_(a, b) a ## b
850#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
851#define ECB_STRINGIFY_(a) # a
852#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
853#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
854
855#define ecb_function_ ecb_inline
856
857#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
858 #define ecb_attribute(attrlist) __attribute__ (attrlist)
859#else
860 #define ecb_attribute(attrlist)
861#endif
862
863#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
864 #define ecb_is_constant(expr) __builtin_constant_p (expr)
865#else
866 /* possible C11 impl for integral types
867 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
868 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
869
870 #define ecb_is_constant(expr) 0
871#endif
872
873#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
376# define expect(expr,value) __builtin_expect ((expr),(value)) 874 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
377# define noinline __attribute__ ((noinline))
378#else 875#else
379# define expect(expr,value) (expr) 876 #define ecb_expect(expr,value) (expr)
380# define noinline
381# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
382# define inline
383# endif 877#endif
384#endif
385 878
879#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
880 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
881#else
882 #define ecb_prefetch(addr,rw,locality)
883#endif
884
885/* no emulation for ecb_decltype */
886#if ECB_CPP11
887 // older implementations might have problems with decltype(x)::type, work around it
888 template<class T> struct ecb_decltype_t { typedef T type; };
889 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
890#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
891 #define ecb_decltype(x) __typeof__ (x)
892#endif
893
894#if _MSC_VER >= 1300
895 #define ecb_deprecated __declspec (deprecated)
896#else
897 #define ecb_deprecated ecb_attribute ((__deprecated__))
898#endif
899
900#if _MSC_VER >= 1500
901 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
902#elif ECB_GCC_VERSION(4,5)
903 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
904#else
905 #define ecb_deprecated_message(msg) ecb_deprecated
906#endif
907
908#if _MSC_VER >= 1400
909 #define ecb_noinline __declspec (noinline)
910#else
911 #define ecb_noinline ecb_attribute ((__noinline__))
912#endif
913
914#define ecb_unused ecb_attribute ((__unused__))
915#define ecb_const ecb_attribute ((__const__))
916#define ecb_pure ecb_attribute ((__pure__))
917
918#if ECB_C11 || __IBMC_NORETURN
919 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
920 #define ecb_noreturn _Noreturn
921#elif ECB_CPP11
922 #define ecb_noreturn [[noreturn]]
923#elif _MSC_VER >= 1200
924 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
925 #define ecb_noreturn __declspec (noreturn)
926#else
927 #define ecb_noreturn ecb_attribute ((__noreturn__))
928#endif
929
930#if ECB_GCC_VERSION(4,3)
931 #define ecb_artificial ecb_attribute ((__artificial__))
932 #define ecb_hot ecb_attribute ((__hot__))
933 #define ecb_cold ecb_attribute ((__cold__))
934#else
935 #define ecb_artificial
936 #define ecb_hot
937 #define ecb_cold
938#endif
939
940/* put around conditional expressions if you are very sure that the */
941/* expression is mostly true or mostly false. note that these return */
942/* booleans, not the expression. */
386#define expect_false(expr) expect ((expr) != 0, 0) 943#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
387#define expect_true(expr) expect ((expr) != 0, 1) 944#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
945/* for compatibility to the rest of the world */
946#define ecb_likely(expr) ecb_expect_true (expr)
947#define ecb_unlikely(expr) ecb_expect_false (expr)
948
949/* count trailing zero bits and count # of one bits */
950#if ECB_GCC_VERSION(3,4) \
951 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
952 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
953 && ECB_CLANG_BUILTIN(__builtin_popcount))
954 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
955 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
956 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
957 #define ecb_ctz32(x) __builtin_ctz (x)
958 #define ecb_ctz64(x) __builtin_ctzll (x)
959 #define ecb_popcount32(x) __builtin_popcount (x)
960 /* no popcountll */
961#else
962 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
963 ecb_function_ ecb_const int
964 ecb_ctz32 (uint32_t x)
965 {
966#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
967 unsigned long r;
968 _BitScanForward (&r, x);
969 return (int)r;
970#else
971 int r = 0;
972
973 x &= ~x + 1; /* this isolates the lowest bit */
974
975#if ECB_branchless_on_i386
976 r += !!(x & 0xaaaaaaaa) << 0;
977 r += !!(x & 0xcccccccc) << 1;
978 r += !!(x & 0xf0f0f0f0) << 2;
979 r += !!(x & 0xff00ff00) << 3;
980 r += !!(x & 0xffff0000) << 4;
981#else
982 if (x & 0xaaaaaaaa) r += 1;
983 if (x & 0xcccccccc) r += 2;
984 if (x & 0xf0f0f0f0) r += 4;
985 if (x & 0xff00ff00) r += 8;
986 if (x & 0xffff0000) r += 16;
987#endif
988
989 return r;
990#endif
991 }
992
993 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
994 ecb_function_ ecb_const int
995 ecb_ctz64 (uint64_t x)
996 {
997#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
998 unsigned long r;
999 _BitScanForward64 (&r, x);
1000 return (int)r;
1001#else
1002 int shift = x & 0xffffffff ? 0 : 32;
1003 return ecb_ctz32 (x >> shift) + shift;
1004#endif
1005 }
1006
1007 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
1008 ecb_function_ ecb_const int
1009 ecb_popcount32 (uint32_t x)
1010 {
1011 x -= (x >> 1) & 0x55555555;
1012 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
1013 x = ((x >> 4) + x) & 0x0f0f0f0f;
1014 x *= 0x01010101;
1015
1016 return x >> 24;
1017 }
1018
1019 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
1020 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
1021 {
1022#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1023 unsigned long r;
1024 _BitScanReverse (&r, x);
1025 return (int)r;
1026#else
1027 int r = 0;
1028
1029 if (x >> 16) { x >>= 16; r += 16; }
1030 if (x >> 8) { x >>= 8; r += 8; }
1031 if (x >> 4) { x >>= 4; r += 4; }
1032 if (x >> 2) { x >>= 2; r += 2; }
1033 if (x >> 1) { r += 1; }
1034
1035 return r;
1036#endif
1037 }
1038
1039 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
1040 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
1041 {
1042#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1043 unsigned long r;
1044 _BitScanReverse64 (&r, x);
1045 return (int)r;
1046#else
1047 int r = 0;
1048
1049 if (x >> 32) { x >>= 32; r += 32; }
1050
1051 return r + ecb_ld32 (x);
1052#endif
1053 }
1054#endif
1055
1056ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
1057ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
1058ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
1059ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
1060
1061ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
1062ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
1063{
1064 return ( (x * 0x0802U & 0x22110U)
1065 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
1066}
1067
1068ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
1069ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
1070{
1071 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
1072 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
1073 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
1074 x = ( x >> 8 ) | ( x << 8);
1075
1076 return x;
1077}
1078
1079ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
1080ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
1081{
1082 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
1083 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
1084 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
1085 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
1086 x = ( x >> 16 ) | ( x << 16);
1087
1088 return x;
1089}
1090
1091/* popcount64 is only available on 64 bit cpus as gcc builtin */
1092/* so for this version we are lazy */
1093ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
1094ecb_function_ ecb_const int
1095ecb_popcount64 (uint64_t x)
1096{
1097 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
1098}
1099
1100ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
1101ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
1102ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
1103ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
1104ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
1105ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
1106ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
1107ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
1108
1109ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
1110ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
1111ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
1112ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
1113ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
1114ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
1115ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
1116ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
1117
1118#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1119 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1120 #define ecb_bswap16(x) __builtin_bswap16 (x)
1121 #else
1122 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1123 #endif
1124 #define ecb_bswap32(x) __builtin_bswap32 (x)
1125 #define ecb_bswap64(x) __builtin_bswap64 (x)
1126#elif _MSC_VER
1127 #include <stdlib.h>
1128 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1129 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1130 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
1131#else
1132 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
1133 ecb_function_ ecb_const uint16_t
1134 ecb_bswap16 (uint16_t x)
1135 {
1136 return ecb_rotl16 (x, 8);
1137 }
1138
1139 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
1140 ecb_function_ ecb_const uint32_t
1141 ecb_bswap32 (uint32_t x)
1142 {
1143 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
1144 }
1145
1146 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
1147 ecb_function_ ecb_const uint64_t
1148 ecb_bswap64 (uint64_t x)
1149 {
1150 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
1151 }
1152#endif
1153
1154#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
1155 #define ecb_unreachable() __builtin_unreachable ()
1156#else
1157 /* this seems to work fine, but gcc always emits a warning for it :/ */
1158 ecb_inline ecb_noreturn void ecb_unreachable (void);
1159 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
1160#endif
1161
1162/* try to tell the compiler that some condition is definitely true */
1163#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
1164
1165ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
1166ecb_inline ecb_const uint32_t
1167ecb_byteorder_helper (void)
1168{
1169 /* the union code still generates code under pressure in gcc, */
1170 /* but less than using pointers, and always seems to */
1171 /* successfully return a constant. */
1172 /* the reason why we have this horrible preprocessor mess */
1173 /* is to avoid it in all cases, at least on common architectures */
1174 /* or when using a recent enough gcc version (>= 4.6) */
1175#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1176 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1177 #define ECB_LITTLE_ENDIAN 1
1178 return 0x44332211;
1179#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1180 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1181 #define ECB_BIG_ENDIAN 1
1182 return 0x11223344;
1183#else
1184 union
1185 {
1186 uint8_t c[4];
1187 uint32_t u;
1188 } u = { 0x11, 0x22, 0x33, 0x44 };
1189 return u.u;
1190#endif
1191}
1192
1193ecb_inline ecb_const ecb_bool ecb_big_endian (void);
1194ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
1195ecb_inline ecb_const ecb_bool ecb_little_endian (void);
1196ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
1197
1198#if ECB_GCC_VERSION(3,0) || ECB_C99
1199 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1200#else
1201 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1202#endif
1203
1204#if ECB_CPP
1205 template<typename T>
1206 static inline T ecb_div_rd (T val, T div)
1207 {
1208 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1209 }
1210 template<typename T>
1211 static inline T ecb_div_ru (T val, T div)
1212 {
1213 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1214 }
1215#else
1216 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1217 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1218#endif
1219
1220#if ecb_cplusplus_does_not_suck
1221 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1222 template<typename T, int N>
1223 static inline int ecb_array_length (const T (&arr)[N])
1224 {
1225 return N;
1226 }
1227#else
1228 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1229#endif
1230
1231ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1232ecb_function_ ecb_const uint32_t
1233ecb_binary16_to_binary32 (uint32_t x)
1234{
1235 unsigned int s = (x & 0x8000) << (31 - 15);
1236 int e = (x >> 10) & 0x001f;
1237 unsigned int m = x & 0x03ff;
1238
1239 if (ecb_expect_false (e == 31))
1240 /* infinity or NaN */
1241 e = 255 - (127 - 15);
1242 else if (ecb_expect_false (!e))
1243 {
1244 if (ecb_expect_true (!m))
1245 /* zero, handled by code below by forcing e to 0 */
1246 e = 0 - (127 - 15);
1247 else
1248 {
1249 /* subnormal, renormalise */
1250 unsigned int s = 10 - ecb_ld32 (m);
1251
1252 m = (m << s) & 0x3ff; /* mask implicit bit */
1253 e -= s - 1;
1254 }
1255 }
1256
1257 /* e and m now are normalised, or zero, (or inf or nan) */
1258 e += 127 - 15;
1259
1260 return s | (e << 23) | (m << (23 - 10));
1261}
1262
1263ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1264ecb_function_ ecb_const uint16_t
1265ecb_binary32_to_binary16 (uint32_t x)
1266{
1267 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1268 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1269 unsigned int m = x & 0x007fffff;
1270
1271 x &= 0x7fffffff;
1272
1273 /* if it's within range of binary16 normals, use fast path */
1274 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1275 {
1276 /* mantissa round-to-even */
1277 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1278
1279 /* handle overflow */
1280 if (ecb_expect_false (m >= 0x00800000))
1281 {
1282 m >>= 1;
1283 e += 1;
1284 }
1285
1286 return s | (e << 10) | (m >> (23 - 10));
1287 }
1288
1289 /* handle large numbers and infinity */
1290 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1291 return s | 0x7c00;
1292
1293 /* handle zero, subnormals and small numbers */
1294 if (ecb_expect_true (x < 0x38800000))
1295 {
1296 /* zero */
1297 if (ecb_expect_true (!x))
1298 return s;
1299
1300 /* handle subnormals */
1301
1302 /* too small, will be zero */
1303 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1304 return s;
1305
1306 m |= 0x00800000; /* make implicit bit explicit */
1307
1308 /* very tricky - we need to round to the nearest e (+10) bit value */
1309 {
1310 unsigned int bits = 14 - e;
1311 unsigned int half = (1 << (bits - 1)) - 1;
1312 unsigned int even = (m >> bits) & 1;
1313
1314 /* if this overflows, we will end up with a normalised number */
1315 m = (m + half + even) >> bits;
1316 }
1317
1318 return s | m;
1319 }
1320
1321 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1322 m >>= 13;
1323
1324 return s | 0x7c00 | m | !m;
1325}
1326
1327/*******************************************************************************/
1328/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1329
1330/* basically, everything uses "ieee pure-endian" floating point numbers */
1331/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1332#if 0 \
1333 || __i386 || __i386__ \
1334 || ECB_GCC_AMD64 \
1335 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1336 || defined __s390__ || defined __s390x__ \
1337 || defined __mips__ \
1338 || defined __alpha__ \
1339 || defined __hppa__ \
1340 || defined __ia64__ \
1341 || defined __m68k__ \
1342 || defined __m88k__ \
1343 || defined __sh__ \
1344 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1345 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1346 || defined __aarch64__
1347 #define ECB_STDFP 1
1348 #include <string.h> /* for memcpy */
1349#else
1350 #define ECB_STDFP 0
1351#endif
1352
1353#ifndef ECB_NO_LIBM
1354
1355 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1356
1357 /* only the oldest of old doesn't have this one. solaris. */
1358 #ifdef INFINITY
1359 #define ECB_INFINITY INFINITY
1360 #else
1361 #define ECB_INFINITY HUGE_VAL
1362 #endif
1363
1364 #ifdef NAN
1365 #define ECB_NAN NAN
1366 #else
1367 #define ECB_NAN ECB_INFINITY
1368 #endif
1369
1370 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1371 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1372 #define ecb_frexpf(x,e) frexpf ((x), (e))
1373 #else
1374 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1375 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1376 #endif
1377
1378 /* convert a float to ieee single/binary32 */
1379 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1380 ecb_function_ ecb_const uint32_t
1381 ecb_float_to_binary32 (float x)
1382 {
1383 uint32_t r;
1384
1385 #if ECB_STDFP
1386 memcpy (&r, &x, 4);
1387 #else
1388 /* slow emulation, works for anything but -0 */
1389 uint32_t m;
1390 int e;
1391
1392 if (x == 0e0f ) return 0x00000000U;
1393 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1394 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1395 if (x != x ) return 0x7fbfffffU;
1396
1397 m = ecb_frexpf (x, &e) * 0x1000000U;
1398
1399 r = m & 0x80000000U;
1400
1401 if (r)
1402 m = -m;
1403
1404 if (e <= -126)
1405 {
1406 m &= 0xffffffU;
1407 m >>= (-125 - e);
1408 e = -126;
1409 }
1410
1411 r |= (e + 126) << 23;
1412 r |= m & 0x7fffffU;
1413 #endif
1414
1415 return r;
1416 }
1417
1418 /* converts an ieee single/binary32 to a float */
1419 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1420 ecb_function_ ecb_const float
1421 ecb_binary32_to_float (uint32_t x)
1422 {
1423 float r;
1424
1425 #if ECB_STDFP
1426 memcpy (&r, &x, 4);
1427 #else
1428 /* emulation, only works for normals and subnormals and +0 */
1429 int neg = x >> 31;
1430 int e = (x >> 23) & 0xffU;
1431
1432 x &= 0x7fffffU;
1433
1434 if (e)
1435 x |= 0x800000U;
1436 else
1437 e = 1;
1438
1439 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1440 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1441
1442 r = neg ? -r : r;
1443 #endif
1444
1445 return r;
1446 }
1447
1448 /* convert a double to ieee double/binary64 */
1449 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1450 ecb_function_ ecb_const uint64_t
1451 ecb_double_to_binary64 (double x)
1452 {
1453 uint64_t r;
1454
1455 #if ECB_STDFP
1456 memcpy (&r, &x, 8);
1457 #else
1458 /* slow emulation, works for anything but -0 */
1459 uint64_t m;
1460 int e;
1461
1462 if (x == 0e0 ) return 0x0000000000000000U;
1463 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1464 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1465 if (x != x ) return 0X7ff7ffffffffffffU;
1466
1467 m = frexp (x, &e) * 0x20000000000000U;
1468
1469 r = m & 0x8000000000000000;;
1470
1471 if (r)
1472 m = -m;
1473
1474 if (e <= -1022)
1475 {
1476 m &= 0x1fffffffffffffU;
1477 m >>= (-1021 - e);
1478 e = -1022;
1479 }
1480
1481 r |= ((uint64_t)(e + 1022)) << 52;
1482 r |= m & 0xfffffffffffffU;
1483 #endif
1484
1485 return r;
1486 }
1487
1488 /* converts an ieee double/binary64 to a double */
1489 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1490 ecb_function_ ecb_const double
1491 ecb_binary64_to_double (uint64_t x)
1492 {
1493 double r;
1494
1495 #if ECB_STDFP
1496 memcpy (&r, &x, 8);
1497 #else
1498 /* emulation, only works for normals and subnormals and +0 */
1499 int neg = x >> 63;
1500 int e = (x >> 52) & 0x7ffU;
1501
1502 x &= 0xfffffffffffffU;
1503
1504 if (e)
1505 x |= 0x10000000000000U;
1506 else
1507 e = 1;
1508
1509 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1510 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1511
1512 r = neg ? -r : r;
1513 #endif
1514
1515 return r;
1516 }
1517
1518 /* convert a float to ieee half/binary16 */
1519 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1520 ecb_function_ ecb_const uint16_t
1521 ecb_float_to_binary16 (float x)
1522 {
1523 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1524 }
1525
1526 /* convert an ieee half/binary16 to float */
1527 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1528 ecb_function_ ecb_const float
1529 ecb_binary16_to_float (uint16_t x)
1530 {
1531 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1532 }
1533
1534#endif
1535
1536#endif
1537
1538/* ECB.H END */
1539
1540#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1541/* if your architecture doesn't need memory fences, e.g. because it is
1542 * single-cpu/core, or if you use libev in a project that doesn't use libev
1543 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
1544 * libev, in which cases the memory fences become nops.
1545 * alternatively, you can remove this #error and link against libpthread,
1546 * which will then provide the memory fences.
1547 */
1548# error "memory fences not defined for your architecture, please report"
1549#endif
1550
1551#ifndef ECB_MEMORY_FENCE
1552# define ECB_MEMORY_FENCE do { } while (0)
1553# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1554# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1555#endif
1556
1557#define expect_false(cond) ecb_expect_false (cond)
1558#define expect_true(cond) ecb_expect_true (cond)
1559#define noinline ecb_noinline
1560
388#define inline_size static inline 1561#define inline_size ecb_inline
389 1562
390#if EV_MINIMAL 1563#if EV_FEATURE_CODE
391# define inline_speed static noinline
392#else
393# define inline_speed static inline 1564# define inline_speed ecb_inline
1565#else
1566# define inline_speed noinline static
394#endif 1567#endif
395 1568
396#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1569#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
397 1570
398#if EV_MINPRI == EV_MAXPRI 1571#if EV_MINPRI == EV_MAXPRI
399# define ABSPRI(w) (((W)w), 0) 1572# define ABSPRI(w) (((W)w), 0)
400#else 1573#else
401# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1574# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
402#endif 1575#endif
403 1576
404#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1577#define EMPTY /* required for microsofts broken pseudo-c compiler */
405#define EMPTY2(a,b) /* used to suppress some warnings */
406 1578
407typedef ev_watcher *W; 1579typedef ev_watcher *W;
408typedef ev_watcher_list *WL; 1580typedef ev_watcher_list *WL;
409typedef ev_watcher_time *WT; 1581typedef ev_watcher_time *WT;
410 1582
411#define ev_active(w) ((W)(w))->active 1583#define ev_active(w) ((W)(w))->active
412#define ev_at(w) ((WT)(w))->at 1584#define ev_at(w) ((WT)(w))->at
413 1585
414#if EV_USE_REALTIME 1586#if EV_USE_REALTIME
415/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 1587/* 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 */ 1588/* giving it a reasonably high chance of working on typical architectures */
417static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 1589static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
418#endif 1590#endif
419 1591
420#if EV_USE_MONOTONIC 1592#if EV_USE_MONOTONIC
421static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 1593static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
422#endif 1594#endif
423 1595
1596#ifndef EV_FD_TO_WIN32_HANDLE
1597# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
1598#endif
1599#ifndef EV_WIN32_HANDLE_TO_FD
1600# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
1601#endif
1602#ifndef EV_WIN32_CLOSE_FD
1603# define EV_WIN32_CLOSE_FD(fd) close (fd)
1604#endif
1605
424#ifdef _WIN32 1606#ifdef _WIN32
425# include "ev_win32.c" 1607# include "ev_win32.c"
426#endif 1608#endif
427 1609
428/*****************************************************************************/ 1610/*****************************************************************************/
429 1611
1612/* define a suitable floor function (only used by periodics atm) */
1613
1614#if EV_USE_FLOOR
1615# include <math.h>
1616# define ev_floor(v) floor (v)
1617#else
1618
1619#include <float.h>
1620
1621/* a floor() replacement function, should be independent of ev_tstamp type */
1622noinline
1623static ev_tstamp
1624ev_floor (ev_tstamp v)
1625{
1626 /* the choice of shift factor is not terribly important */
1627#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1628 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1629#else
1630 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1631#endif
1632
1633 /* argument too large for an unsigned long? */
1634 if (expect_false (v >= shift))
1635 {
1636 ev_tstamp f;
1637
1638 if (v == v - 1.)
1639 return v; /* very large number */
1640
1641 f = shift * ev_floor (v * (1. / shift));
1642 return f + ev_floor (v - f);
1643 }
1644
1645 /* special treatment for negative args? */
1646 if (expect_false (v < 0.))
1647 {
1648 ev_tstamp f = -ev_floor (-v);
1649
1650 return f - (f == v ? 0 : 1);
1651 }
1652
1653 /* fits into an unsigned long */
1654 return (unsigned long)v;
1655}
1656
1657#endif
1658
1659/*****************************************************************************/
1660
1661#ifdef __linux
1662# include <sys/utsname.h>
1663#endif
1664
1665noinline ecb_cold
1666static unsigned int
1667ev_linux_version (void)
1668{
1669#ifdef __linux
1670 unsigned int v = 0;
1671 struct utsname buf;
1672 int i;
1673 char *p = buf.release;
1674
1675 if (uname (&buf))
1676 return 0;
1677
1678 for (i = 3+1; --i; )
1679 {
1680 unsigned int c = 0;
1681
1682 for (;;)
1683 {
1684 if (*p >= '0' && *p <= '9')
1685 c = c * 10 + *p++ - '0';
1686 else
1687 {
1688 p += *p == '.';
1689 break;
1690 }
1691 }
1692
1693 v = (v << 8) | c;
1694 }
1695
1696 return v;
1697#else
1698 return 0;
1699#endif
1700}
1701
1702/*****************************************************************************/
1703
1704#if EV_AVOID_STDIO
1705noinline ecb_cold
1706static void
1707ev_printerr (const char *msg)
1708{
1709 write (STDERR_FILENO, msg, strlen (msg));
1710}
1711#endif
1712
430static void (*syserr_cb)(const char *msg); 1713static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
431 1714
1715ecb_cold
432void 1716void
433ev_set_syserr_cb (void (*cb)(const char *msg)) 1717ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
434{ 1718{
435 syserr_cb = cb; 1719 syserr_cb = cb;
436} 1720}
437 1721
438static void noinline 1722noinline ecb_cold
1723static void
439ev_syserr (const char *msg) 1724ev_syserr (const char *msg)
440{ 1725{
441 if (!msg) 1726 if (!msg)
442 msg = "(libev) system error"; 1727 msg = "(libev) system error";
443 1728
444 if (syserr_cb) 1729 if (syserr_cb)
445 syserr_cb (msg); 1730 syserr_cb (msg);
446 else 1731 else
447 { 1732 {
1733#if EV_AVOID_STDIO
1734 ev_printerr (msg);
1735 ev_printerr (": ");
1736 ev_printerr (strerror (errno));
1737 ev_printerr ("\n");
1738#else
448 perror (msg); 1739 perror (msg);
1740#endif
449 abort (); 1741 abort ();
450 } 1742 }
451} 1743}
452 1744
453static void * 1745static void *
454ev_realloc_emul (void *ptr, long size) 1746ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
455{ 1747{
456 /* some systems, notably openbsd and darwin, fail to properly 1748 /* some systems, notably openbsd and darwin, fail to properly
457 * implement realloc (x, 0) (as required by both ansi c-98 and 1749 * implement realloc (x, 0) (as required by both ansi c-89 and
458 * the single unix specification, so work around them here. 1750 * the single unix specification, so work around them here.
1751 * recently, also (at least) fedora and debian started breaking it,
1752 * despite documenting it otherwise.
459 */ 1753 */
460 1754
461 if (size) 1755 if (size)
462 return realloc (ptr, size); 1756 return realloc (ptr, size);
463 1757
464 free (ptr); 1758 free (ptr);
465 return 0; 1759 return 0;
466} 1760}
467 1761
468static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1762static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
469 1763
1764ecb_cold
470void 1765void
471ev_set_allocator (void *(*cb)(void *ptr, long size)) 1766ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
472{ 1767{
473 alloc = cb; 1768 alloc = cb;
474} 1769}
475 1770
476inline_speed void * 1771inline_speed void *
… …
478{ 1773{
479 ptr = alloc (ptr, size); 1774 ptr = alloc (ptr, size);
480 1775
481 if (!ptr && size) 1776 if (!ptr && size)
482 { 1777 {
1778#if EV_AVOID_STDIO
1779 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1780#else
483 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1781 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1782#endif
484 abort (); 1783 abort ();
485 } 1784 }
486 1785
487 return ptr; 1786 return ptr;
488} 1787}
… …
499typedef struct 1798typedef struct
500{ 1799{
501 WL head; 1800 WL head;
502 unsigned char events; /* the events watched for */ 1801 unsigned char events; /* the events watched for */
503 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */ 1802 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 */ 1803 unsigned char emask; /* some backends store the actual kernel mask in here */
505 unsigned char unused; 1804 unsigned char unused;
506#if EV_USE_EPOLL 1805#if EV_USE_EPOLL
507 unsigned int egen; /* generation counter to counter epoll bugs */ 1806 unsigned int egen; /* generation counter to counter epoll bugs */
508#endif 1807#endif
509#if EV_SELECT_IS_WINSOCKET 1808#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
510 SOCKET handle; 1809 SOCKET handle;
1810#endif
1811#if EV_USE_IOCP
1812 OVERLAPPED or, ow;
511#endif 1813#endif
512} ANFD; 1814} ANFD;
513 1815
514/* stores the pending event set for a given watcher */ 1816/* stores the pending event set for a given watcher */
515typedef struct 1817typedef struct
… …
557 #undef VAR 1859 #undef VAR
558 }; 1860 };
559 #include "ev_wrap.h" 1861 #include "ev_wrap.h"
560 1862
561 static struct ev_loop default_loop_struct; 1863 static struct ev_loop default_loop_struct;
562 struct ev_loop *ev_default_loop_ptr; 1864 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
563 1865
564#else 1866#else
565 1867
566 ev_tstamp ev_rt_now; 1868 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; 1869 #define VAR(name,decl) static decl;
568 #include "ev_vars.h" 1870 #include "ev_vars.h"
569 #undef VAR 1871 #undef VAR
570 1872
571 static int ev_default_loop_ptr; 1873 static int ev_default_loop_ptr;
572 1874
573#endif 1875#endif
574 1876
575#if EV_MINIMAL < 2 1877#if EV_FEATURE_API
576# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 1878# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
577# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 1879# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
578# define EV_INVOKE_PENDING invoke_cb (EV_A) 1880# define EV_INVOKE_PENDING invoke_cb (EV_A)
579#else 1881#else
580# define EV_RELEASE_CB (void)0 1882# define EV_RELEASE_CB (void)0
581# define EV_ACQUIRE_CB (void)0 1883# define EV_ACQUIRE_CB (void)0
582# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1884# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
583#endif 1885#endif
584 1886
585#define EVUNLOOP_RECURSE 0x80 1887#define EVBREAK_RECURSE 0x80
586 1888
587/*****************************************************************************/ 1889/*****************************************************************************/
588 1890
589#ifndef EV_HAVE_EV_TIME 1891#ifndef EV_HAVE_EV_TIME
590ev_tstamp 1892ev_tstamp
591ev_time (void) 1893ev_time (void) EV_NOEXCEPT
592{ 1894{
593#if EV_USE_REALTIME 1895#if EV_USE_REALTIME
594 if (expect_true (have_realtime)) 1896 if (expect_true (have_realtime))
595 { 1897 {
596 struct timespec ts; 1898 struct timespec ts;
… …
620 return ev_time (); 1922 return ev_time ();
621} 1923}
622 1924
623#if EV_MULTIPLICITY 1925#if EV_MULTIPLICITY
624ev_tstamp 1926ev_tstamp
625ev_now (EV_P) 1927ev_now (EV_P) EV_NOEXCEPT
626{ 1928{
627 return ev_rt_now; 1929 return ev_rt_now;
628} 1930}
629#endif 1931#endif
630 1932
631void 1933void
632ev_sleep (ev_tstamp delay) 1934ev_sleep (ev_tstamp delay) EV_NOEXCEPT
633{ 1935{
634 if (delay > 0.) 1936 if (delay > 0.)
635 { 1937 {
636#if EV_USE_NANOSLEEP 1938#if EV_USE_NANOSLEEP
637 struct timespec ts; 1939 struct timespec ts;
638 1940
639 ts.tv_sec = (time_t)delay; 1941 EV_TS_SET (ts, delay);
640 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
641
642 nanosleep (&ts, 0); 1942 nanosleep (&ts, 0);
643#elif defined(_WIN32) 1943#elif defined _WIN32
1944 /* maybe this should round up, as ms is very low resolution */
1945 /* compared to select (µs) or nanosleep (ns) */
644 Sleep ((unsigned long)(delay * 1e3)); 1946 Sleep ((unsigned long)(delay * 1e3));
645#else 1947#else
646 struct timeval tv; 1948 struct timeval tv;
647 1949
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 */ 1950 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
652 /* somehting not guaranteed by newer posix versions, but guaranteed */ 1951 /* something not guaranteed by newer posix versions, but guaranteed */
653 /* by older ones */ 1952 /* by older ones */
1953 EV_TV_SET (tv, delay);
654 select (0, 0, 0, 0, &tv); 1954 select (0, 0, 0, 0, &tv);
655#endif 1955#endif
656 } 1956 }
657} 1957}
658 1958
659/*****************************************************************************/ 1959/*****************************************************************************/
660 1960
661#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1961#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
662 1962
663/* find a suitable new size for the given array, */ 1963/* find a suitable new size for the given array, */
664/* hopefully by rounding to a ncie-to-malloc size */ 1964/* hopefully by rounding to a nice-to-malloc size */
665inline_size int 1965inline_size int
666array_nextsize (int elem, int cur, int cnt) 1966array_nextsize (int elem, int cur, int cnt)
667{ 1967{
668 int ncur = cur + 1; 1968 int ncur = cur + 1;
669 1969
670 do 1970 do
671 ncur <<= 1; 1971 ncur <<= 1;
672 while (cnt > ncur); 1972 while (cnt > ncur);
673 1973
674 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1974 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
675 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1975 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
676 { 1976 {
677 ncur *= elem; 1977 ncur *= elem;
678 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1978 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
679 ncur = ncur - sizeof (void *) * 4; 1979 ncur = ncur - sizeof (void *) * 4;
… …
681 } 1981 }
682 1982
683 return ncur; 1983 return ncur;
684} 1984}
685 1985
686static noinline void * 1986noinline ecb_cold
1987static void *
687array_realloc (int elem, void *base, int *cur, int cnt) 1988array_realloc (int elem, void *base, int *cur, int cnt)
688{ 1989{
689 *cur = array_nextsize (elem, *cur, cnt); 1990 *cur = array_nextsize (elem, *cur, cnt);
690 return ev_realloc (base, elem * *cur); 1991 return ev_realloc (base, elem * *cur);
691} 1992}
692 1993
1994#define array_needsize_noinit(base,count)
1995
693#define array_init_zero(base,count) \ 1996#define array_needsize_zerofill(base,count) \
694 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1997 memset ((void *)(base), 0, sizeof (*(base)) * (count))
695 1998
696#define array_needsize(type,base,cur,cnt,init) \ 1999#define array_needsize(type,base,cur,cnt,init) \
697 if (expect_false ((cnt) > (cur))) \ 2000 if (expect_false ((cnt) > (cur))) \
698 { \ 2001 { \
699 int ocur_ = (cur); \ 2002 ecb_unused int ocur_ = (cur); \
700 (base) = (type *)array_realloc \ 2003 (base) = (type *)array_realloc \
701 (sizeof (type), (base), &(cur), (cnt)); \ 2004 (sizeof (type), (base), &(cur), (cnt)); \
702 init ((base) + (ocur_), (cur) - ocur_); \ 2005 init ((base) + (ocur_), (cur) - ocur_); \
703 } 2006 }
704 2007
… …
716 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 2019 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
717 2020
718/*****************************************************************************/ 2021/*****************************************************************************/
719 2022
720/* dummy callback for pending events */ 2023/* dummy callback for pending events */
721static void noinline 2024noinline
2025static void
722pendingcb (EV_P_ ev_prepare *w, int revents) 2026pendingcb (EV_P_ ev_prepare *w, int revents)
723{ 2027{
724} 2028}
725 2029
726void noinline 2030noinline
2031void
727ev_feed_event (EV_P_ void *w, int revents) 2032ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
728{ 2033{
729 W w_ = (W)w; 2034 W w_ = (W)w;
730 int pri = ABSPRI (w_); 2035 int pri = ABSPRI (w_);
731 2036
732 if (expect_false (w_->pending)) 2037 if (expect_false (w_->pending))
733 pendings [pri][w_->pending - 1].events |= revents; 2038 pendings [pri][w_->pending - 1].events |= revents;
734 else 2039 else
735 { 2040 {
736 w_->pending = ++pendingcnt [pri]; 2041 w_->pending = ++pendingcnt [pri];
737 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2042 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
738 pendings [pri][w_->pending - 1].w = w_; 2043 pendings [pri][w_->pending - 1].w = w_;
739 pendings [pri][w_->pending - 1].events = revents; 2044 pendings [pri][w_->pending - 1].events = revents;
740 } 2045 }
2046
2047 pendingpri = NUMPRI - 1;
741} 2048}
742 2049
743inline_speed void 2050inline_speed void
744feed_reverse (EV_P_ W w) 2051feed_reverse (EV_P_ W w)
745{ 2052{
746 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2053 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
747 rfeeds [rfeedcnt++] = w; 2054 rfeeds [rfeedcnt++] = w;
748} 2055}
749 2056
750inline_size void 2057inline_size void
751feed_reverse_done (EV_P_ int revents) 2058feed_reverse_done (EV_P_ int revents)
… …
765} 2072}
766 2073
767/*****************************************************************************/ 2074/*****************************************************************************/
768 2075
769inline_speed void 2076inline_speed void
770fd_event_nc (EV_P_ int fd, int revents) 2077fd_event_nocheck (EV_P_ int fd, int revents)
771{ 2078{
772 ANFD *anfd = anfds + fd; 2079 ANFD *anfd = anfds + fd;
773 ev_io *w; 2080 ev_io *w;
774 2081
775 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2082 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
787fd_event (EV_P_ int fd, int revents) 2094fd_event (EV_P_ int fd, int revents)
788{ 2095{
789 ANFD *anfd = anfds + fd; 2096 ANFD *anfd = anfds + fd;
790 2097
791 if (expect_true (!anfd->reify)) 2098 if (expect_true (!anfd->reify))
792 fd_event_nc (EV_A_ fd, revents); 2099 fd_event_nocheck (EV_A_ fd, revents);
793} 2100}
794 2101
795void 2102void
796ev_feed_fd_event (EV_P_ int fd, int revents) 2103ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
797{ 2104{
798 if (fd >= 0 && fd < anfdmax) 2105 if (fd >= 0 && fd < anfdmax)
799 fd_event_nc (EV_A_ fd, revents); 2106 fd_event_nocheck (EV_A_ fd, revents);
800} 2107}
801 2108
802/* make sure the external fd watch events are in-sync */ 2109/* make sure the external fd watch events are in-sync */
803/* with the kernel/libev internal state */ 2110/* with the kernel/libev internal state */
804inline_size void 2111inline_size void
805fd_reify (EV_P) 2112fd_reify (EV_P)
806{ 2113{
807 int i; 2114 int i;
808 2115
2116#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
2117 for (i = 0; i < fdchangecnt; ++i)
2118 {
2119 int fd = fdchanges [i];
2120 ANFD *anfd = anfds + fd;
2121
2122 if (anfd->reify & EV__IOFDSET && anfd->head)
2123 {
2124 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
2125
2126 if (handle != anfd->handle)
2127 {
2128 unsigned long arg;
2129
2130 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
2131
2132 /* handle changed, but fd didn't - we need to do it in two steps */
2133 backend_modify (EV_A_ fd, anfd->events, 0);
2134 anfd->events = 0;
2135 anfd->handle = handle;
2136 }
2137 }
2138 }
2139#endif
2140
809 for (i = 0; i < fdchangecnt; ++i) 2141 for (i = 0; i < fdchangecnt; ++i)
810 { 2142 {
811 int fd = fdchanges [i]; 2143 int fd = fdchanges [i];
812 ANFD *anfd = anfds + fd; 2144 ANFD *anfd = anfds + fd;
813 ev_io *w; 2145 ev_io *w;
814 2146
815 unsigned char events = 0; 2147 unsigned char o_events = anfd->events;
2148 unsigned char o_reify = anfd->reify;
816 2149
817 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2150 anfd->reify = 0;
818 events |= (unsigned char)w->events;
819 2151
820#if EV_SELECT_IS_WINSOCKET 2152 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
821 if (events)
822 { 2153 {
823 unsigned long arg; 2154 anfd->events = 0;
824 #ifdef EV_FD_TO_WIN32_HANDLE 2155
825 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 2156 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
826 #else 2157 anfd->events |= (unsigned char)w->events;
827 anfd->handle = _get_osfhandle (fd); 2158
828 #endif 2159 if (o_events != anfd->events)
829 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 2160 o_reify = EV__IOFDSET; /* actually |= */
830 } 2161 }
831#endif
832 2162
833 { 2163 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); 2164 backend_modify (EV_A_ fd, o_events, anfd->events);
842 }
843 } 2165 }
844 2166
845 fdchangecnt = 0; 2167 fdchangecnt = 0;
846} 2168}
847 2169
848/* something about the given fd changed */ 2170/* something about the given fd changed */
849inline_size void 2171inline_size
2172void
850fd_change (EV_P_ int fd, int flags) 2173fd_change (EV_P_ int fd, int flags)
851{ 2174{
852 unsigned char reify = anfds [fd].reify; 2175 unsigned char reify = anfds [fd].reify;
853 anfds [fd].reify |= flags; 2176 anfds [fd].reify |= flags;
854 2177
855 if (expect_true (!reify)) 2178 if (expect_true (!reify))
856 { 2179 {
857 ++fdchangecnt; 2180 ++fdchangecnt;
858 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2181 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
859 fdchanges [fdchangecnt - 1] = fd; 2182 fdchanges [fdchangecnt - 1] = fd;
860 } 2183 }
861} 2184}
862 2185
863/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2186/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
864inline_speed void 2187inline_speed ecb_cold void
865fd_kill (EV_P_ int fd) 2188fd_kill (EV_P_ int fd)
866{ 2189{
867 ev_io *w; 2190 ev_io *w;
868 2191
869 while ((w = (ev_io *)anfds [fd].head)) 2192 while ((w = (ev_io *)anfds [fd].head))
… …
871 ev_io_stop (EV_A_ w); 2194 ev_io_stop (EV_A_ w);
872 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2195 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
873 } 2196 }
874} 2197}
875 2198
876/* check whether the given fd is atcually valid, for error recovery */ 2199/* check whether the given fd is actually valid, for error recovery */
877inline_size int 2200inline_size ecb_cold int
878fd_valid (int fd) 2201fd_valid (int fd)
879{ 2202{
880#ifdef _WIN32 2203#ifdef _WIN32
881 return _get_osfhandle (fd) != -1; 2204 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
882#else 2205#else
883 return fcntl (fd, F_GETFD) != -1; 2206 return fcntl (fd, F_GETFD) != -1;
884#endif 2207#endif
885} 2208}
886 2209
887/* called on EBADF to verify fds */ 2210/* called on EBADF to verify fds */
888static void noinline 2211noinline ecb_cold
2212static void
889fd_ebadf (EV_P) 2213fd_ebadf (EV_P)
890{ 2214{
891 int fd; 2215 int fd;
892 2216
893 for (fd = 0; fd < anfdmax; ++fd) 2217 for (fd = 0; fd < anfdmax; ++fd)
… …
895 if (!fd_valid (fd) && errno == EBADF) 2219 if (!fd_valid (fd) && errno == EBADF)
896 fd_kill (EV_A_ fd); 2220 fd_kill (EV_A_ fd);
897} 2221}
898 2222
899/* called on ENOMEM in select/poll to kill some fds and retry */ 2223/* called on ENOMEM in select/poll to kill some fds and retry */
900static void noinline 2224noinline ecb_cold
2225static void
901fd_enomem (EV_P) 2226fd_enomem (EV_P)
902{ 2227{
903 int fd; 2228 int fd;
904 2229
905 for (fd = anfdmax; fd--; ) 2230 for (fd = anfdmax; fd--; )
906 if (anfds [fd].events) 2231 if (anfds [fd].events)
907 { 2232 {
908 fd_kill (EV_A_ fd); 2233 fd_kill (EV_A_ fd);
909 return; 2234 break;
910 } 2235 }
911} 2236}
912 2237
913/* usually called after fork if backend needs to re-arm all fds from scratch */ 2238/* usually called after fork if backend needs to re-arm all fds from scratch */
914static void noinline 2239noinline
2240static void
915fd_rearm_all (EV_P) 2241fd_rearm_all (EV_P)
916{ 2242{
917 int fd; 2243 int fd;
918 2244
919 for (fd = 0; fd < anfdmax; ++fd) 2245 for (fd = 0; fd < anfdmax; ++fd)
… …
923 anfds [fd].emask = 0; 2249 anfds [fd].emask = 0;
924 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); 2250 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
925 } 2251 }
926} 2252}
927 2253
2254/* used to prepare libev internal fd's */
2255/* this is not fork-safe */
2256inline_speed void
2257fd_intern (int fd)
2258{
2259#ifdef _WIN32
2260 unsigned long arg = 1;
2261 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
2262#else
2263 fcntl (fd, F_SETFD, FD_CLOEXEC);
2264 fcntl (fd, F_SETFL, O_NONBLOCK);
2265#endif
2266}
2267
928/*****************************************************************************/ 2268/*****************************************************************************/
929 2269
930/* 2270/*
931 * the heap functions want a real array index. array index 0 uis guaranteed to not 2271 * 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 2272 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
933 * the branching factor of the d-tree. 2273 * the branching factor of the d-tree.
934 */ 2274 */
935 2275
936/* 2276/*
… …
1004 2344
1005 for (;;) 2345 for (;;)
1006 { 2346 {
1007 int c = k << 1; 2347 int c = k << 1;
1008 2348
1009 if (c > N + HEAP0 - 1) 2349 if (c >= N + HEAP0)
1010 break; 2350 break;
1011 2351
1012 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 2352 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
1013 ? 1 : 0; 2353 ? 1 : 0;
1014 2354
… …
1050 2390
1051/* move an element suitably so it is in a correct place */ 2391/* move an element suitably so it is in a correct place */
1052inline_size void 2392inline_size void
1053adjustheap (ANHE *heap, int N, int k) 2393adjustheap (ANHE *heap, int N, int k)
1054{ 2394{
1055 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 2395 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1056 upheap (heap, k); 2396 upheap (heap, k);
1057 else 2397 else
1058 downheap (heap, N, k); 2398 downheap (heap, N, k);
1059} 2399}
1060 2400
… …
1073/*****************************************************************************/ 2413/*****************************************************************************/
1074 2414
1075/* associate signal watchers to a signal signal */ 2415/* associate signal watchers to a signal signal */
1076typedef struct 2416typedef struct
1077{ 2417{
2418 EV_ATOMIC_T pending;
2419#if EV_MULTIPLICITY
2420 EV_P;
2421#endif
1078 WL head; 2422 WL head;
1079 EV_ATOMIC_T gotsig;
1080} ANSIG; 2423} ANSIG;
1081 2424
1082static ANSIG *signals; 2425static ANSIG signals [EV_NSIG - 1];
1083static int signalmax;
1084
1085static EV_ATOMIC_T gotsig;
1086 2426
1087/*****************************************************************************/ 2427/*****************************************************************************/
1088 2428
1089/* used to prepare libev internal fd's */ 2429#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1090/* this is not fork-safe */ 2430
2431noinline ecb_cold
2432static void
2433evpipe_init (EV_P)
2434{
2435 if (!ev_is_active (&pipe_w))
2436 {
2437 int fds [2];
2438
2439# if EV_USE_EVENTFD
2440 fds [0] = -1;
2441 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
2442 if (fds [1] < 0 && errno == EINVAL)
2443 fds [1] = eventfd (0, 0);
2444
2445 if (fds [1] < 0)
2446# endif
2447 {
2448 while (pipe (fds))
2449 ev_syserr ("(libev) error creating signal/async pipe");
2450
2451 fd_intern (fds [0]);
2452 }
2453
2454 evpipe [0] = fds [0];
2455
2456 if (evpipe [1] < 0)
2457 evpipe [1] = fds [1]; /* first call, set write fd */
2458 else
2459 {
2460 /* on subsequent calls, do not change evpipe [1] */
2461 /* so that evpipe_write can always rely on its value. */
2462 /* this branch does not do anything sensible on windows, */
2463 /* so must not be executed on windows */
2464
2465 dup2 (fds [1], evpipe [1]);
2466 close (fds [1]);
2467 }
2468
2469 fd_intern (evpipe [1]);
2470
2471 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2472 ev_io_start (EV_A_ &pipe_w);
2473 ev_unref (EV_A); /* watcher should not keep loop alive */
2474 }
2475}
2476
1091inline_speed void 2477inline_speed void
1092fd_intern (int fd) 2478evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1093{ 2479{
1094#ifdef _WIN32 2480 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 2481
1103static void noinline 2482 if (expect_true (*flag))
1104evpipe_init (EV_P) 2483 return;
1105{ 2484
1106 if (!ev_is_active (&pipe_w)) 2485 *flag = 1;
2486 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2487
2488 pipe_write_skipped = 1;
2489
2490 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2491
2492 if (pipe_write_wanted)
1107 { 2493 {
2494 int old_errno;
2495
2496 pipe_write_skipped = 0;
2497 ECB_MEMORY_FENCE_RELEASE;
2498
2499 old_errno = errno; /* save errno because write will clobber it */
2500
1108#if EV_USE_EVENTFD 2501#if EV_USE_EVENTFD
1109 if ((evfd = eventfd (0, 0)) >= 0) 2502 if (evpipe [0] < 0)
1110 { 2503 {
1111 evpipe [0] = -1; 2504 uint64_t counter = 1;
1112 fd_intern (evfd); 2505 write (evpipe [1], &counter, sizeof (uint64_t));
1113 ev_io_set (&pipe_w, evfd, EV_READ);
1114 } 2506 }
1115 else 2507 else
1116#endif 2508#endif
1117 { 2509 {
1118 while (pipe (evpipe)) 2510#ifdef _WIN32
1119 ev_syserr ("(libev) error creating signal/async pipe"); 2511 WSABUF buf;
1120 2512 DWORD sent;
1121 fd_intern (evpipe [0]); 2513 buf.buf = (char *)&buf;
1122 fd_intern (evpipe [1]); 2514 buf.len = 1;
1123 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2515 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2516#else
2517 write (evpipe [1], &(evpipe [1]), 1);
2518#endif
1124 } 2519 }
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 2520
1150 errno = old_errno; 2521 errno = old_errno;
1151 } 2522 }
1152} 2523}
1153 2524
1154/* called whenever the libev signal pipe */ 2525/* called whenever the libev signal pipe */
1155/* got some events (signal, async) */ 2526/* got some events (signal, async) */
1156static void 2527static void
1157pipecb (EV_P_ ev_io *iow, int revents) 2528pipecb (EV_P_ ev_io *iow, int revents)
1158{ 2529{
2530 int i;
2531
2532 if (revents & EV_READ)
2533 {
1159#if EV_USE_EVENTFD 2534#if EV_USE_EVENTFD
1160 if (evfd >= 0) 2535 if (evpipe [0] < 0)
1161 { 2536 {
1162 uint64_t counter; 2537 uint64_t counter;
1163 read (evfd, &counter, sizeof (uint64_t)); 2538 read (evpipe [1], &counter, sizeof (uint64_t));
1164 } 2539 }
1165 else 2540 else
1166#endif 2541#endif
1167 { 2542 {
1168 char dummy; 2543 char dummy[4];
2544#ifdef _WIN32
2545 WSABUF buf;
2546 DWORD recvd;
2547 DWORD flags = 0;
2548 buf.buf = dummy;
2549 buf.len = sizeof (dummy);
2550 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2551#else
1169 read (evpipe [0], &dummy, 1); 2552 read (evpipe [0], &dummy, sizeof (dummy));
2553#endif
2554 }
2555 }
2556
2557 pipe_write_skipped = 0;
2558
2559 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2560
2561#if EV_SIGNAL_ENABLE
2562 if (sig_pending)
1170 } 2563 {
2564 sig_pending = 0;
1171 2565
1172 if (gotsig && ev_is_default_loop (EV_A)) 2566 ECB_MEMORY_FENCE;
1173 {
1174 int signum;
1175 gotsig = 0;
1176 2567
1177 for (signum = signalmax; signum--; ) 2568 for (i = EV_NSIG - 1; i--; )
1178 if (signals [signum].gotsig) 2569 if (expect_false (signals [i].pending))
1179 ev_feed_signal_event (EV_A_ signum + 1); 2570 ev_feed_signal_event (EV_A_ i + 1);
1180 } 2571 }
2572#endif
1181 2573
1182#if EV_ASYNC_ENABLE 2574#if EV_ASYNC_ENABLE
1183 if (gotasync) 2575 if (async_pending)
1184 { 2576 {
1185 int i; 2577 async_pending = 0;
1186 gotasync = 0; 2578
2579 ECB_MEMORY_FENCE;
1187 2580
1188 for (i = asynccnt; i--; ) 2581 for (i = asynccnt; i--; )
1189 if (asyncs [i]->sent) 2582 if (asyncs [i]->sent)
1190 { 2583 {
1191 asyncs [i]->sent = 0; 2584 asyncs [i]->sent = 0;
2585 ECB_MEMORY_FENCE_RELEASE;
1192 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2586 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1193 } 2587 }
1194 } 2588 }
1195#endif 2589#endif
1196} 2590}
1197 2591
1198/*****************************************************************************/ 2592/*****************************************************************************/
1199 2593
2594void
2595ev_feed_signal (int signum) EV_NOEXCEPT
2596{
2597#if EV_MULTIPLICITY
2598 EV_P;
2599 ECB_MEMORY_FENCE_ACQUIRE;
2600 EV_A = signals [signum - 1].loop;
2601
2602 if (!EV_A)
2603 return;
2604#endif
2605
2606 signals [signum - 1].pending = 1;
2607 evpipe_write (EV_A_ &sig_pending);
2608}
2609
1200static void 2610static void
1201ev_sighandler (int signum) 2611ev_sighandler (int signum)
1202{ 2612{
2613#ifdef _WIN32
2614 signal (signum, ev_sighandler);
2615#endif
2616
2617 ev_feed_signal (signum);
2618}
2619
2620noinline
2621void
2622ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
2623{
2624 WL w;
2625
2626 if (expect_false (signum <= 0 || signum >= EV_NSIG))
2627 return;
2628
2629 --signum;
2630
1203#if EV_MULTIPLICITY 2631#if EV_MULTIPLICITY
1204 struct ev_loop *loop = &default_loop_struct; 2632 /* it is permissible to try to feed a signal to the wrong loop */
1205#endif 2633 /* or, likely more useful, feeding a signal nobody is waiting for */
1206 2634
1207#if _WIN32 2635 if (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; 2636 return;
2637#endif
1228 2638
1229 signals [signum].gotsig = 0; 2639 signals [signum].pending = 0;
2640 ECB_MEMORY_FENCE_RELEASE;
1230 2641
1231 for (w = signals [signum].head; w; w = w->next) 2642 for (w = signals [signum].head; w; w = w->next)
1232 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2643 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1233} 2644}
1234 2645
2646#if EV_USE_SIGNALFD
2647static void
2648sigfdcb (EV_P_ ev_io *iow, int revents)
2649{
2650 struct signalfd_siginfo si[2], *sip; /* these structs are big */
2651
2652 for (;;)
2653 {
2654 ssize_t res = read (sigfd, si, sizeof (si));
2655
2656 /* not ISO-C, as res might be -1, but works with SuS */
2657 for (sip = si; (char *)sip < (char *)si + res; ++sip)
2658 ev_feed_signal_event (EV_A_ sip->ssi_signo);
2659
2660 if (res < (ssize_t)sizeof (si))
2661 break;
2662 }
2663}
2664#endif
2665
2666#endif
2667
1235/*****************************************************************************/ 2668/*****************************************************************************/
1236 2669
2670#if EV_CHILD_ENABLE
1237static WL childs [EV_PID_HASHSIZE]; 2671static WL childs [EV_PID_HASHSIZE];
1238
1239#ifndef _WIN32
1240 2672
1241static ev_signal childev; 2673static ev_signal childev;
1242 2674
1243#ifndef WIFCONTINUED 2675#ifndef WIFCONTINUED
1244# define WIFCONTINUED(status) 0 2676# define WIFCONTINUED(status) 0
… …
1249child_reap (EV_P_ int chain, int pid, int status) 2681child_reap (EV_P_ int chain, int pid, int status)
1250{ 2682{
1251 ev_child *w; 2683 ev_child *w;
1252 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2684 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1253 2685
1254 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2686 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1255 { 2687 {
1256 if ((w->pid == pid || !w->pid) 2688 if ((w->pid == pid || !w->pid)
1257 && (!traced || (w->flags & 1))) 2689 && (!traced || (w->flags & 1)))
1258 { 2690 {
1259 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2691 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 */ 2716 /* 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 */ 2717 /* 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); 2718 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1287 2719
1288 child_reap (EV_A_ pid, pid, status); 2720 child_reap (EV_A_ pid, pid, status);
1289 if (EV_PID_HASHSIZE > 1) 2721 if ((EV_PID_HASHSIZE) > 1)
1290 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2722 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1291} 2723}
1292 2724
1293#endif 2725#endif
1294 2726
1295/*****************************************************************************/ 2727/*****************************************************************************/
1296 2728
2729#if EV_USE_IOCP
2730# include "ev_iocp.c"
2731#endif
1297#if EV_USE_PORT 2732#if EV_USE_PORT
1298# include "ev_port.c" 2733# include "ev_port.c"
1299#endif 2734#endif
1300#if EV_USE_KQUEUE 2735#if EV_USE_KQUEUE
1301# include "ev_kqueue.c" 2736# include "ev_kqueue.c"
1302#endif 2737#endif
2738#if EV_USE_LINUXAIO
2739# include "ev_linuxaio.c"
2740#endif
1303#if EV_USE_EPOLL 2741#if EV_USE_EPOLL
1304# include "ev_epoll.c" 2742# include "ev_epoll.c"
1305#endif 2743#endif
1306#if EV_USE_POLL 2744#if EV_USE_POLL
1307# include "ev_poll.c" 2745# include "ev_poll.c"
1308#endif 2746#endif
1309#if EV_USE_SELECT 2747#if EV_USE_SELECT
1310# include "ev_select.c" 2748# include "ev_select.c"
1311#endif 2749#endif
1312 2750
1313int 2751ecb_cold int
1314ev_version_major (void) 2752ev_version_major (void) EV_NOEXCEPT
1315{ 2753{
1316 return EV_VERSION_MAJOR; 2754 return EV_VERSION_MAJOR;
1317} 2755}
1318 2756
1319int 2757ecb_cold int
1320ev_version_minor (void) 2758ev_version_minor (void) EV_NOEXCEPT
1321{ 2759{
1322 return EV_VERSION_MINOR; 2760 return EV_VERSION_MINOR;
1323} 2761}
1324 2762
1325/* return true if we are running with elevated privileges and should ignore env variables */ 2763/* return true if we are running with elevated privileges and should ignore env variables */
1326int inline_size 2764inline_size ecb_cold int
1327enable_secure (void) 2765enable_secure (void)
1328{ 2766{
1329#ifdef _WIN32 2767#ifdef _WIN32
1330 return 0; 2768 return 0;
1331#else 2769#else
1332 return getuid () != geteuid () 2770 return getuid () != geteuid ()
1333 || getgid () != getegid (); 2771 || getgid () != getegid ();
1334#endif 2772#endif
1335} 2773}
1336 2774
2775ecb_cold
1337unsigned int 2776unsigned int
1338ev_supported_backends (void) 2777ev_supported_backends (void) EV_NOEXCEPT
1339{ 2778{
1340 unsigned int flags = 0; 2779 unsigned int flags = 0;
1341 2780
1342 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2781 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1343 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2782 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
1344 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 2783 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2784 if (EV_USE_LINUXAIO) flags |= EVBACKEND_LINUXAIO;
1345 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 2785 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
1346 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2786 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
1347 2787
1348 return flags; 2788 return flags;
1349} 2789}
1350 2790
2791ecb_cold
1351unsigned int 2792unsigned int
1352ev_recommended_backends (void) 2793ev_recommended_backends (void) EV_NOEXCEPT
1353{ 2794{
1354 unsigned int flags = ev_supported_backends (); 2795 unsigned int flags = ev_supported_backends ();
1355 2796
1356#ifndef __NetBSD__ 2797#ifndef __NetBSD__
1357 /* kqueue is borked on everything but netbsd apparently */ 2798 /* kqueue is borked on everything but netbsd apparently */
… …
1361#ifdef __APPLE__ 2802#ifdef __APPLE__
1362 /* only select works correctly on that "unix-certified" platform */ 2803 /* only select works correctly on that "unix-certified" platform */
1363 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2804 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1364 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 2805 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1365#endif 2806#endif
2807#ifdef __FreeBSD__
2808 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2809#endif
2810
2811 /* TODO: linuxaio is very experimental */
2812 flags &= ~EVBACKEND_LINUXAIO;
1366 2813
1367 return flags; 2814 return flags;
1368} 2815}
1369 2816
2817ecb_cold
1370unsigned int 2818unsigned int
1371ev_embeddable_backends (void) 2819ev_embeddable_backends (void) EV_NOEXCEPT
1372{ 2820{
1373 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2821 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1374 2822
1375 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2823 /* 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 */ 2824 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1377 flags &= ~EVBACKEND_EPOLL; 2825 flags &= ~EVBACKEND_EPOLL;
1378 2826
1379 return flags; 2827 return flags;
1380} 2828}
1381 2829
1382unsigned int 2830unsigned int
1383ev_backend (EV_P) 2831ev_backend (EV_P) EV_NOEXCEPT
1384{ 2832{
1385 return backend; 2833 return backend;
1386} 2834}
1387 2835
1388#if EV_MINIMAL < 2 2836#if EV_FEATURE_API
1389unsigned int 2837unsigned int
1390ev_loop_count (EV_P) 2838ev_iteration (EV_P) EV_NOEXCEPT
1391{ 2839{
1392 return loop_count; 2840 return loop_count;
1393} 2841}
1394 2842
1395unsigned int 2843unsigned int
1396ev_loop_depth (EV_P) 2844ev_depth (EV_P) EV_NOEXCEPT
1397{ 2845{
1398 return loop_depth; 2846 return loop_depth;
1399} 2847}
1400 2848
1401void 2849void
1402ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2850ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1403{ 2851{
1404 io_blocktime = interval; 2852 io_blocktime = interval;
1405} 2853}
1406 2854
1407void 2855void
1408ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2856ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1409{ 2857{
1410 timeout_blocktime = interval; 2858 timeout_blocktime = interval;
1411} 2859}
1412 2860
1413void 2861void
1414ev_set_userdata (EV_P_ void *data) 2862ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
1415{ 2863{
1416 userdata = data; 2864 userdata = data;
1417} 2865}
1418 2866
1419void * 2867void *
1420ev_userdata (EV_P) 2868ev_userdata (EV_P) EV_NOEXCEPT
1421{ 2869{
1422 return userdata; 2870 return userdata;
1423} 2871}
1424 2872
2873void
1425void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2874ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
1426{ 2875{
1427 invoke_cb = invoke_pending_cb; 2876 invoke_cb = invoke_pending_cb;
1428} 2877}
1429 2878
2879void
1430void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2880ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
1431{ 2881{
1432 release_cb = release; 2882 release_cb = release;
1433 acquire_cb = acquire; 2883 acquire_cb = acquire;
1434} 2884}
1435#endif 2885#endif
1436 2886
1437/* initialise a loop structure, must be zero-initialised */ 2887/* initialise a loop structure, must be zero-initialised */
1438static void noinline 2888noinline ecb_cold
2889static void
1439loop_init (EV_P_ unsigned int flags) 2890loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
1440{ 2891{
1441 if (!backend) 2892 if (!backend)
1442 { 2893 {
2894 origflags = flags;
2895
1443#if EV_USE_REALTIME 2896#if EV_USE_REALTIME
1444 if (!have_realtime) 2897 if (!have_realtime)
1445 { 2898 {
1446 struct timespec ts; 2899 struct timespec ts;
1447 2900
… …
1458 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 2911 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1459 have_monotonic = 1; 2912 have_monotonic = 1;
1460 } 2913 }
1461#endif 2914#endif
1462 2915
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 */ 2916 /* pid check not overridable via env */
1481#ifndef _WIN32 2917#ifndef _WIN32
1482 if (flags & EVFLAG_FORKCHECK) 2918 if (flags & EVFLAG_FORKCHECK)
1483 curpid = getpid (); 2919 curpid = getpid ();
1484#endif 2920#endif
… …
1486 if (!(flags & EVFLAG_NOENV) 2922 if (!(flags & EVFLAG_NOENV)
1487 && !enable_secure () 2923 && !enable_secure ()
1488 && getenv ("LIBEV_FLAGS")) 2924 && getenv ("LIBEV_FLAGS"))
1489 flags = atoi (getenv ("LIBEV_FLAGS")); 2925 flags = atoi (getenv ("LIBEV_FLAGS"));
1490 2926
1491 if (!(flags & 0x0000ffffU)) 2927 ev_rt_now = ev_time ();
2928 mn_now = get_clock ();
2929 now_floor = mn_now;
2930 rtmn_diff = ev_rt_now - mn_now;
2931#if EV_FEATURE_API
2932 invoke_cb = ev_invoke_pending;
2933#endif
2934
2935 io_blocktime = 0.;
2936 timeout_blocktime = 0.;
2937 backend = 0;
2938 backend_fd = -1;
2939 sig_pending = 0;
2940#if EV_ASYNC_ENABLE
2941 async_pending = 0;
2942#endif
2943 pipe_write_skipped = 0;
2944 pipe_write_wanted = 0;
2945 evpipe [0] = -1;
2946 evpipe [1] = -1;
2947#if EV_USE_INOTIFY
2948 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2949#endif
2950#if EV_USE_SIGNALFD
2951 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
2952#endif
2953
2954 if (!(flags & EVBACKEND_MASK))
1492 flags |= ev_recommended_backends (); 2955 flags |= ev_recommended_backends ();
1493 2956
2957#if EV_USE_IOCP
2958 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2959#endif
1494#if EV_USE_PORT 2960#if EV_USE_PORT
1495 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2961 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1496#endif 2962#endif
1497#if EV_USE_KQUEUE 2963#if EV_USE_KQUEUE
1498 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2964 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
2965#endif
2966#if EV_USE_LINUXAIO
2967 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
1499#endif 2968#endif
1500#if EV_USE_EPOLL 2969#if EV_USE_EPOLL
1501 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 2970 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
1502#endif 2971#endif
1503#if EV_USE_POLL 2972#if EV_USE_POLL
1504 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 2973 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
1505#endif 2974#endif
1506#if EV_USE_SELECT 2975#if EV_USE_SELECT
1507 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2976 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
1508#endif 2977#endif
1509 2978
1510 ev_prepare_init (&pending_w, pendingcb); 2979 ev_prepare_init (&pending_w, pendingcb);
1511 2980
2981#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1512 ev_init (&pipe_w, pipecb); 2982 ev_init (&pipe_w, pipecb);
1513 ev_set_priority (&pipe_w, EV_MAXPRI); 2983 ev_set_priority (&pipe_w, EV_MAXPRI);
2984#endif
1514 } 2985 }
1515} 2986}
1516 2987
1517/* free up a loop structure */ 2988/* free up a loop structure */
1518static void noinline 2989ecb_cold
2990void
1519loop_destroy (EV_P) 2991ev_loop_destroy (EV_P)
1520{ 2992{
1521 int i; 2993 int i;
1522 2994
2995#if EV_MULTIPLICITY
2996 /* mimic free (0) */
2997 if (!EV_A)
2998 return;
2999#endif
3000
3001#if EV_CLEANUP_ENABLE
3002 /* queue cleanup watchers (and execute them) */
3003 if (expect_false (cleanupcnt))
3004 {
3005 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
3006 EV_INVOKE_PENDING;
3007 }
3008#endif
3009
3010#if EV_CHILD_ENABLE
3011 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
3012 {
3013 ev_ref (EV_A); /* child watcher */
3014 ev_signal_stop (EV_A_ &childev);
3015 }
3016#endif
3017
1523 if (ev_is_active (&pipe_w)) 3018 if (ev_is_active (&pipe_w))
1524 { 3019 {
1525 ev_ref (EV_A); /* signal watcher */ 3020 /*ev_ref (EV_A);*/
1526 ev_io_stop (EV_A_ &pipe_w); 3021 /*ev_io_stop (EV_A_ &pipe_w);*/
1527 3022
3023 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
3024 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
3025 }
3026
1528#if EV_USE_EVENTFD 3027#if EV_USE_SIGNALFD
1529 if (evfd >= 0) 3028 if (ev_is_active (&sigfd_w))
1530 close (evfd); 3029 close (sigfd);
1531#endif 3030#endif
1532
1533 if (evpipe [0] >= 0)
1534 {
1535 close (evpipe [0]);
1536 close (evpipe [1]);
1537 }
1538 }
1539 3031
1540#if EV_USE_INOTIFY 3032#if EV_USE_INOTIFY
1541 if (fs_fd >= 0) 3033 if (fs_fd >= 0)
1542 close (fs_fd); 3034 close (fs_fd);
1543#endif 3035#endif
1544 3036
1545 if (backend_fd >= 0) 3037 if (backend_fd >= 0)
1546 close (backend_fd); 3038 close (backend_fd);
1547 3039
3040#if EV_USE_IOCP
3041 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
3042#endif
1548#if EV_USE_PORT 3043#if EV_USE_PORT
1549 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3044 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1550#endif 3045#endif
1551#if EV_USE_KQUEUE 3046#if EV_USE_KQUEUE
1552 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3047 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
3048#endif
3049#if EV_USE_LINUXAIO
3050 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
1553#endif 3051#endif
1554#if EV_USE_EPOLL 3052#if EV_USE_EPOLL
1555 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3053 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
1556#endif 3054#endif
1557#if EV_USE_POLL 3055#if EV_USE_POLL
1558 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3056 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
1559#endif 3057#endif
1560#if EV_USE_SELECT 3058#if EV_USE_SELECT
1561 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3059 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
1562#endif 3060#endif
1563 3061
1564 for (i = NUMPRI; i--; ) 3062 for (i = NUMPRI; i--; )
1565 { 3063 {
1566 array_free (pending, [i]); 3064 array_free (pending, [i]);
1567#if EV_IDLE_ENABLE 3065#if EV_IDLE_ENABLE
1568 array_free (idle, [i]); 3066 array_free (idle, [i]);
1569#endif 3067#endif
1570 } 3068 }
1571 3069
1572 ev_free (anfds); anfdmax = 0; 3070 ev_free (anfds); anfds = 0; anfdmax = 0;
1573 3071
1574 /* have to use the microsoft-never-gets-it-right macro */ 3072 /* have to use the microsoft-never-gets-it-right macro */
1575 array_free (rfeed, EMPTY); 3073 array_free (rfeed, EMPTY);
1576 array_free (fdchange, EMPTY); 3074 array_free (fdchange, EMPTY);
1577 array_free (timer, EMPTY); 3075 array_free (timer, EMPTY);
… …
1579 array_free (periodic, EMPTY); 3077 array_free (periodic, EMPTY);
1580#endif 3078#endif
1581#if EV_FORK_ENABLE 3079#if EV_FORK_ENABLE
1582 array_free (fork, EMPTY); 3080 array_free (fork, EMPTY);
1583#endif 3081#endif
3082#if EV_CLEANUP_ENABLE
3083 array_free (cleanup, EMPTY);
3084#endif
1584 array_free (prepare, EMPTY); 3085 array_free (prepare, EMPTY);
1585 array_free (check, EMPTY); 3086 array_free (check, EMPTY);
1586#if EV_ASYNC_ENABLE 3087#if EV_ASYNC_ENABLE
1587 array_free (async, EMPTY); 3088 array_free (async, EMPTY);
1588#endif 3089#endif
1589 3090
1590 backend = 0; 3091 backend = 0;
3092
3093#if EV_MULTIPLICITY
3094 if (ev_is_default_loop (EV_A))
3095#endif
3096 ev_default_loop_ptr = 0;
3097#if EV_MULTIPLICITY
3098 else
3099 ev_free (EV_A);
3100#endif
1591} 3101}
1592 3102
1593#if EV_USE_INOTIFY 3103#if EV_USE_INOTIFY
1594inline_size void infy_fork (EV_P); 3104inline_size void infy_fork (EV_P);
1595#endif 3105#endif
1596 3106
1597inline_size void 3107inline_size void
1598loop_fork (EV_P) 3108loop_fork (EV_P)
1599{ 3109{
1600#if EV_USE_PORT 3110#if EV_USE_PORT
1601 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3111 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1602#endif 3112#endif
1603#if EV_USE_KQUEUE 3113#if EV_USE_KQUEUE
1604 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 3114 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
3115#endif
3116#if EV_USE_LINUXAIO
3117 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
1605#endif 3118#endif
1606#if EV_USE_EPOLL 3119#if EV_USE_EPOLL
1607 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3120 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
1608#endif 3121#endif
1609#if EV_USE_INOTIFY 3122#if EV_USE_INOTIFY
1610 infy_fork (EV_A); 3123 infy_fork (EV_A);
1611#endif 3124#endif
1612 3125
3126#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1613 if (ev_is_active (&pipe_w)) 3127 if (ev_is_active (&pipe_w) && postfork != 2)
1614 { 3128 {
1615 /* this "locks" the handlers against writing to the pipe */ 3129 /* 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 3130
1622 ev_ref (EV_A); 3131 ev_ref (EV_A);
1623 ev_io_stop (EV_A_ &pipe_w); 3132 ev_io_stop (EV_A_ &pipe_w);
1624 3133
1625#if EV_USE_EVENTFD
1626 if (evfd >= 0)
1627 close (evfd);
1628#endif
1629
1630 if (evpipe [0] >= 0) 3134 if (evpipe [0] >= 0)
1631 { 3135 EV_WIN32_CLOSE_FD (evpipe [0]);
1632 close (evpipe [0]);
1633 close (evpipe [1]);
1634 }
1635 3136
1636 evpipe_init (EV_A); 3137 evpipe_init (EV_A);
1637 /* now iterate over everything, in case we missed something */ 3138 /* iterate over everything, in case we missed something before */
1638 pipecb (EV_A_ &pipe_w, EV_READ); 3139 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1639 } 3140 }
3141#endif
1640 3142
1641 postfork = 0; 3143 postfork = 0;
1642} 3144}
1643 3145
1644#if EV_MULTIPLICITY 3146#if EV_MULTIPLICITY
1645 3147
3148ecb_cold
1646struct ev_loop * 3149struct ev_loop *
1647ev_loop_new (unsigned int flags) 3150ev_loop_new (unsigned int flags) EV_NOEXCEPT
1648{ 3151{
1649 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3152 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1650 3153
1651 memset (loop, 0, sizeof (struct ev_loop)); 3154 memset (EV_A, 0, sizeof (struct ev_loop));
1652
1653 loop_init (EV_A_ flags); 3155 loop_init (EV_A_ flags);
1654 3156
1655 if (ev_backend (EV_A)) 3157 if (ev_backend (EV_A))
1656 return loop; 3158 return EV_A;
1657 3159
3160 ev_free (EV_A);
1658 return 0; 3161 return 0;
1659} 3162}
1660 3163
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 */ 3164#endif /* multiplicity */
1674 3165
1675#if EV_VERIFY 3166#if EV_VERIFY
1676static void noinline 3167noinline ecb_cold
3168static void
1677verify_watcher (EV_P_ W w) 3169verify_watcher (EV_P_ W w)
1678{ 3170{
1679 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3171 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1680 3172
1681 if (w->pending) 3173 if (w->pending)
1682 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3174 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1683} 3175}
1684 3176
1685static void noinline 3177noinline ecb_cold
3178static void
1686verify_heap (EV_P_ ANHE *heap, int N) 3179verify_heap (EV_P_ ANHE *heap, int N)
1687{ 3180{
1688 int i; 3181 int i;
1689 3182
1690 for (i = HEAP0; i < N + HEAP0; ++i) 3183 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1695 3188
1696 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3189 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1697 } 3190 }
1698} 3191}
1699 3192
1700static void noinline 3193noinline ecb_cold
3194static void
1701array_verify (EV_P_ W *ws, int cnt) 3195array_verify (EV_P_ W *ws, int cnt)
1702{ 3196{
1703 while (cnt--) 3197 while (cnt--)
1704 { 3198 {
1705 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3199 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1706 verify_watcher (EV_A_ ws [cnt]); 3200 verify_watcher (EV_A_ ws [cnt]);
1707 } 3201 }
1708} 3202}
1709#endif 3203#endif
1710 3204
1711#if EV_MINIMAL < 2 3205#if EV_FEATURE_API
1712void 3206void ecb_cold
1713ev_loop_verify (EV_P) 3207ev_verify (EV_P) EV_NOEXCEPT
1714{ 3208{
1715#if EV_VERIFY 3209#if EV_VERIFY
1716 int i; 3210 int i;
1717 WL w; 3211 WL w, w2;
1718 3212
1719 assert (activecnt >= -1); 3213 assert (activecnt >= -1);
1720 3214
1721 assert (fdchangemax >= fdchangecnt); 3215 assert (fdchangemax >= fdchangecnt);
1722 for (i = 0; i < fdchangecnt; ++i) 3216 for (i = 0; i < fdchangecnt; ++i)
1723 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3217 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1724 3218
1725 assert (anfdmax >= 0); 3219 assert (anfdmax >= 0);
1726 for (i = 0; i < anfdmax; ++i) 3220 for (i = 0; i < anfdmax; ++i)
3221 {
3222 int j = 0;
3223
1727 for (w = anfds [i].head; w; w = w->next) 3224 for (w = w2 = anfds [i].head; w; w = w->next)
1728 { 3225 {
1729 verify_watcher (EV_A_ (W)w); 3226 verify_watcher (EV_A_ (W)w);
3227
3228 if (j++ & 1)
3229 {
3230 assert (("libev: io watcher list contains a loop", w != w2));
3231 w2 = w2->next;
3232 }
3233
1730 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3234 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)); 3235 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1732 } 3236 }
3237 }
1733 3238
1734 assert (timermax >= timercnt); 3239 assert (timermax >= timercnt);
1735 verify_heap (EV_A_ timers, timercnt); 3240 verify_heap (EV_A_ timers, timercnt);
1736 3241
1737#if EV_PERIODIC_ENABLE 3242#if EV_PERIODIC_ENABLE
… …
1752#if EV_FORK_ENABLE 3257#if EV_FORK_ENABLE
1753 assert (forkmax >= forkcnt); 3258 assert (forkmax >= forkcnt);
1754 array_verify (EV_A_ (W *)forks, forkcnt); 3259 array_verify (EV_A_ (W *)forks, forkcnt);
1755#endif 3260#endif
1756 3261
3262#if EV_CLEANUP_ENABLE
3263 assert (cleanupmax >= cleanupcnt);
3264 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
3265#endif
3266
1757#if EV_ASYNC_ENABLE 3267#if EV_ASYNC_ENABLE
1758 assert (asyncmax >= asynccnt); 3268 assert (asyncmax >= asynccnt);
1759 array_verify (EV_A_ (W *)asyncs, asynccnt); 3269 array_verify (EV_A_ (W *)asyncs, asynccnt);
1760#endif 3270#endif
1761 3271
3272#if EV_PREPARE_ENABLE
1762 assert (preparemax >= preparecnt); 3273 assert (preparemax >= preparecnt);
1763 array_verify (EV_A_ (W *)prepares, preparecnt); 3274 array_verify (EV_A_ (W *)prepares, preparecnt);
3275#endif
1764 3276
3277#if EV_CHECK_ENABLE
1765 assert (checkmax >= checkcnt); 3278 assert (checkmax >= checkcnt);
1766 array_verify (EV_A_ (W *)checks, checkcnt); 3279 array_verify (EV_A_ (W *)checks, checkcnt);
3280#endif
1767 3281
1768# if 0 3282# if 0
3283#if EV_CHILD_ENABLE
1769 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 3284 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) 3285 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
3286#endif
1771# endif 3287# endif
1772#endif 3288#endif
1773} 3289}
1774#endif 3290#endif
1775 3291
1776#if EV_MULTIPLICITY 3292#if EV_MULTIPLICITY
3293ecb_cold
1777struct ev_loop * 3294struct ev_loop *
1778ev_default_loop_init (unsigned int flags)
1779#else 3295#else
1780int 3296int
3297#endif
1781ev_default_loop (unsigned int flags) 3298ev_default_loop (unsigned int flags) EV_NOEXCEPT
1782#endif
1783{ 3299{
1784 if (!ev_default_loop_ptr) 3300 if (!ev_default_loop_ptr)
1785 { 3301 {
1786#if EV_MULTIPLICITY 3302#if EV_MULTIPLICITY
1787 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 3303 EV_P = ev_default_loop_ptr = &default_loop_struct;
1788#else 3304#else
1789 ev_default_loop_ptr = 1; 3305 ev_default_loop_ptr = 1;
1790#endif 3306#endif
1791 3307
1792 loop_init (EV_A_ flags); 3308 loop_init (EV_A_ flags);
1793 3309
1794 if (ev_backend (EV_A)) 3310 if (ev_backend (EV_A))
1795 { 3311 {
1796#ifndef _WIN32 3312#if EV_CHILD_ENABLE
1797 ev_signal_init (&childev, childcb, SIGCHLD); 3313 ev_signal_init (&childev, childcb, SIGCHLD);
1798 ev_set_priority (&childev, EV_MAXPRI); 3314 ev_set_priority (&childev, EV_MAXPRI);
1799 ev_signal_start (EV_A_ &childev); 3315 ev_signal_start (EV_A_ &childev);
1800 ev_unref (EV_A); /* child watcher should not keep loop alive */ 3316 ev_unref (EV_A); /* child watcher should not keep loop alive */
1801#endif 3317#endif
… …
1806 3322
1807 return ev_default_loop_ptr; 3323 return ev_default_loop_ptr;
1808} 3324}
1809 3325
1810void 3326void
1811ev_default_destroy (void) 3327ev_loop_fork (EV_P) EV_NOEXCEPT
1812{ 3328{
1813#if EV_MULTIPLICITY 3329 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} 3330}
1836 3331
1837/*****************************************************************************/ 3332/*****************************************************************************/
1838 3333
1839void 3334void
1840ev_invoke (EV_P_ void *w, int revents) 3335ev_invoke (EV_P_ void *w, int revents)
1841{ 3336{
1842 EV_CB_INVOKE ((W)w, revents); 3337 EV_CB_INVOKE ((W)w, revents);
1843} 3338}
1844 3339
3340unsigned int
3341ev_pending_count (EV_P) EV_NOEXCEPT
3342{
3343 int pri;
3344 unsigned int count = 0;
3345
3346 for (pri = NUMPRI; pri--; )
3347 count += pendingcnt [pri];
3348
3349 return count;
3350}
3351
1845void noinline 3352noinline
3353void
1846ev_invoke_pending (EV_P) 3354ev_invoke_pending (EV_P)
1847{ 3355{
1848 int pri; 3356 pendingpri = NUMPRI;
1849 3357
1850 for (pri = NUMPRI; pri--; ) 3358 do
3359 {
3360 --pendingpri;
3361
3362 /* pendingpri possibly gets modified in the inner loop */
1851 while (pendingcnt [pri]) 3363 while (pendingcnt [pendingpri])
1852 { 3364 {
1853 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3365 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
1854 3366
1855 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1856 /* ^ this is no longer true, as pending_w could be here */
1857
1858 p->w->pending = 0; 3367 p->w->pending = 0;
1859 EV_CB_INVOKE (p->w, p->events); 3368 EV_CB_INVOKE (p->w, p->events);
1860 EV_FREQUENT_CHECK; 3369 EV_FREQUENT_CHECK;
1861 } 3370 }
3371 }
3372 while (pendingpri);
1862} 3373}
1863 3374
1864#if EV_IDLE_ENABLE 3375#if EV_IDLE_ENABLE
1865/* make idle watchers pending. this handles the "call-idle */ 3376/* make idle watchers pending. this handles the "call-idle */
1866/* only when higher priorities are idle" logic */ 3377/* only when higher priorities are idle" logic */
… …
1918 EV_FREQUENT_CHECK; 3429 EV_FREQUENT_CHECK;
1919 feed_reverse (EV_A_ (W)w); 3430 feed_reverse (EV_A_ (W)w);
1920 } 3431 }
1921 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 3432 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1922 3433
1923 feed_reverse_done (EV_A_ EV_TIMEOUT); 3434 feed_reverse_done (EV_A_ EV_TIMER);
1924 } 3435 }
1925} 3436}
1926 3437
1927#if EV_PERIODIC_ENABLE 3438#if EV_PERIODIC_ENABLE
3439
3440noinline
3441static void
3442periodic_recalc (EV_P_ ev_periodic *w)
3443{
3444 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3445 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3446
3447 /* the above almost always errs on the low side */
3448 while (at <= ev_rt_now)
3449 {
3450 ev_tstamp nat = at + w->interval;
3451
3452 /* when resolution fails us, we use ev_rt_now */
3453 if (expect_false (nat == at))
3454 {
3455 at = ev_rt_now;
3456 break;
3457 }
3458
3459 at = nat;
3460 }
3461
3462 ev_at (w) = at;
3463}
3464
1928/* make periodics pending */ 3465/* make periodics pending */
1929inline_size void 3466inline_size void
1930periodics_reify (EV_P) 3467periodics_reify (EV_P)
1931{ 3468{
1932 EV_FREQUENT_CHECK; 3469 EV_FREQUENT_CHECK;
1933 3470
1934 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3471 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1935 { 3472 {
1936 int feed_count = 0;
1937
1938 do 3473 do
1939 { 3474 {
1940 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3475 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
1941 3476
1942 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3477 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
1951 ANHE_at_cache (periodics [HEAP0]); 3486 ANHE_at_cache (periodics [HEAP0]);
1952 downheap (periodics, periodiccnt, HEAP0); 3487 downheap (periodics, periodiccnt, HEAP0);
1953 } 3488 }
1954 else if (w->interval) 3489 else if (w->interval)
1955 { 3490 {
1956 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3491 periodic_recalc (EV_A_ w);
1957 /* if next trigger time is not sufficiently in the future, put it there */
1958 /* this might happen because of floating point inexactness */
1959 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1960 {
1961 ev_at (w) += w->interval;
1962
1963 /* if interval is unreasonably low we might still have a time in the past */
1964 /* so correct this. this will make the periodic very inexact, but the user */
1965 /* has effectively asked to get triggered more often than possible */
1966 if (ev_at (w) < ev_rt_now)
1967 ev_at (w) = ev_rt_now;
1968 }
1969
1970 ANHE_at_cache (periodics [HEAP0]); 3492 ANHE_at_cache (periodics [HEAP0]);
1971 downheap (periodics, periodiccnt, HEAP0); 3493 downheap (periodics, periodiccnt, HEAP0);
1972 } 3494 }
1973 else 3495 else
1974 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3496 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
1981 feed_reverse_done (EV_A_ EV_PERIODIC); 3503 feed_reverse_done (EV_A_ EV_PERIODIC);
1982 } 3504 }
1983} 3505}
1984 3506
1985/* simply recalculate all periodics */ 3507/* simply recalculate all periodics */
1986/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 3508/* TODO: maybe ensure that at least one event happens when jumping forward? */
1987static void noinline 3509noinline ecb_cold
3510static void
1988periodics_reschedule (EV_P) 3511periodics_reschedule (EV_P)
1989{ 3512{
1990 int i; 3513 int i;
1991 3514
1992 /* adjust periodics after time jump */ 3515 /* adjust periodics after time jump */
… …
1995 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3518 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1996 3519
1997 if (w->reschedule_cb) 3520 if (w->reschedule_cb)
1998 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3521 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1999 else if (w->interval) 3522 else if (w->interval)
2000 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3523 periodic_recalc (EV_A_ w);
2001 3524
2002 ANHE_at_cache (periodics [i]); 3525 ANHE_at_cache (periodics [i]);
2003 } 3526 }
2004 3527
2005 reheap (periodics, periodiccnt); 3528 reheap (periodics, periodiccnt);
2006} 3529}
2007#endif 3530#endif
2008 3531
2009/* adjust all timers by a given offset */ 3532/* adjust all timers by a given offset */
2010static void noinline 3533noinline ecb_cold
3534static void
2011timers_reschedule (EV_P_ ev_tstamp adjust) 3535timers_reschedule (EV_P_ ev_tstamp adjust)
2012{ 3536{
2013 int i; 3537 int i;
2014 3538
2015 for (i = 0; i < timercnt; ++i) 3539 for (i = 0; i < timercnt; ++i)
… …
2019 ANHE_at_cache (*he); 3543 ANHE_at_cache (*he);
2020 } 3544 }
2021} 3545}
2022 3546
2023/* fetch new monotonic and realtime times from the kernel */ 3547/* fetch new monotonic and realtime times from the kernel */
2024/* also detetc if there was a timejump, and act accordingly */ 3548/* also detect if there was a timejump, and act accordingly */
2025inline_speed void 3549inline_speed void
2026time_update (EV_P_ ev_tstamp max_block) 3550time_update (EV_P_ ev_tstamp max_block)
2027{ 3551{
2028#if EV_USE_MONOTONIC 3552#if EV_USE_MONOTONIC
2029 if (expect_true (have_monotonic)) 3553 if (expect_true (have_monotonic))
… …
2052 * doesn't hurt either as we only do this on time-jumps or 3576 * doesn't hurt either as we only do this on time-jumps or
2053 * in the unlikely event of having been preempted here. 3577 * in the unlikely event of having been preempted here.
2054 */ 3578 */
2055 for (i = 4; --i; ) 3579 for (i = 4; --i; )
2056 { 3580 {
3581 ev_tstamp diff;
2057 rtmn_diff = ev_rt_now - mn_now; 3582 rtmn_diff = ev_rt_now - mn_now;
2058 3583
3584 diff = odiff - rtmn_diff;
3585
2059 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3586 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2060 return; /* all is well */ 3587 return; /* all is well */
2061 3588
2062 ev_rt_now = ev_time (); 3589 ev_rt_now = ev_time ();
2063 mn_now = get_clock (); 3590 mn_now = get_clock ();
2064 now_floor = mn_now; 3591 now_floor = mn_now;
… …
2086 3613
2087 mn_now = ev_rt_now; 3614 mn_now = ev_rt_now;
2088 } 3615 }
2089} 3616}
2090 3617
2091void 3618int
2092ev_loop (EV_P_ int flags) 3619ev_run (EV_P_ int flags)
2093{ 3620{
2094#if EV_MINIMAL < 2 3621#if EV_FEATURE_API
2095 ++loop_depth; 3622 ++loop_depth;
2096#endif 3623#endif
2097 3624
2098 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 3625 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2099 3626
2100 loop_done = EVUNLOOP_CANCEL; 3627 loop_done = EVBREAK_CANCEL;
2101 3628
2102 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 3629 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2103 3630
2104 do 3631 do
2105 { 3632 {
2106#if EV_VERIFY >= 2 3633#if EV_VERIFY >= 2
2107 ev_loop_verify (EV_A); 3634 ev_verify (EV_A);
2108#endif 3635#endif
2109 3636
2110#ifndef _WIN32 3637#ifndef _WIN32
2111 if (expect_false (curpid)) /* penalise the forking check even more */ 3638 if (expect_false (curpid)) /* penalise the forking check even more */
2112 if (expect_false (getpid () != curpid)) 3639 if (expect_false (getpid () != curpid))
… …
2124 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3651 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2125 EV_INVOKE_PENDING; 3652 EV_INVOKE_PENDING;
2126 } 3653 }
2127#endif 3654#endif
2128 3655
3656#if EV_PREPARE_ENABLE
2129 /* queue prepare watchers (and execute them) */ 3657 /* queue prepare watchers (and execute them) */
2130 if (expect_false (preparecnt)) 3658 if (expect_false (preparecnt))
2131 { 3659 {
2132 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3660 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2133 EV_INVOKE_PENDING; 3661 EV_INVOKE_PENDING;
2134 } 3662 }
3663#endif
2135 3664
2136 if (expect_false (loop_done)) 3665 if (expect_false (loop_done))
2137 break; 3666 break;
2138 3667
2139 /* we might have forked, so reify kernel state if necessary */ 3668 /* we might have forked, so reify kernel state if necessary */
… …
2146 /* calculate blocking time */ 3675 /* calculate blocking time */
2147 { 3676 {
2148 ev_tstamp waittime = 0.; 3677 ev_tstamp waittime = 0.;
2149 ev_tstamp sleeptime = 0.; 3678 ev_tstamp sleeptime = 0.;
2150 3679
3680 /* remember old timestamp for io_blocktime calculation */
3681 ev_tstamp prev_mn_now = mn_now;
3682
3683 /* update time to cancel out callback processing overhead */
3684 time_update (EV_A_ 1e100);
3685
3686 /* from now on, we want a pipe-wake-up */
3687 pipe_write_wanted = 1;
3688
3689 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3690
2151 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3691 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2152 { 3692 {
2153 /* remember old timestamp for io_blocktime calculation */
2154 ev_tstamp prev_mn_now = mn_now;
2155
2156 /* update time to cancel out callback processing overhead */
2157 time_update (EV_A_ 1e100);
2158
2159 waittime = MAX_BLOCKTIME; 3693 waittime = MAX_BLOCKTIME;
2160 3694
2161 if (timercnt) 3695 if (timercnt)
2162 { 3696 {
2163 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3697 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2164 if (waittime > to) waittime = to; 3698 if (waittime > to) waittime = to;
2165 } 3699 }
2166 3700
2167#if EV_PERIODIC_ENABLE 3701#if EV_PERIODIC_ENABLE
2168 if (periodiccnt) 3702 if (periodiccnt)
2169 { 3703 {
2170 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3704 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2171 if (waittime > to) waittime = to; 3705 if (waittime > to) waittime = to;
2172 } 3706 }
2173#endif 3707#endif
2174 3708
2175 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3709 /* don't let timeouts decrease the waittime below timeout_blocktime */
2176 if (expect_false (waittime < timeout_blocktime)) 3710 if (expect_false (waittime < timeout_blocktime))
2177 waittime = timeout_blocktime; 3711 waittime = timeout_blocktime;
3712
3713 /* at this point, we NEED to wait, so we have to ensure */
3714 /* to pass a minimum nonzero value to the backend */
3715 if (expect_false (waittime < backend_mintime))
3716 waittime = backend_mintime;
2178 3717
2179 /* extra check because io_blocktime is commonly 0 */ 3718 /* extra check because io_blocktime is commonly 0 */
2180 if (expect_false (io_blocktime)) 3719 if (expect_false (io_blocktime))
2181 { 3720 {
2182 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3721 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2183 3722
2184 if (sleeptime > waittime - backend_fudge) 3723 if (sleeptime > waittime - backend_mintime)
2185 sleeptime = waittime - backend_fudge; 3724 sleeptime = waittime - backend_mintime;
2186 3725
2187 if (expect_true (sleeptime > 0.)) 3726 if (expect_true (sleeptime > 0.))
2188 { 3727 {
2189 ev_sleep (sleeptime); 3728 ev_sleep (sleeptime);
2190 waittime -= sleeptime; 3729 waittime -= sleeptime;
2191 } 3730 }
2192 } 3731 }
2193 } 3732 }
2194 3733
2195#if EV_MINIMAL < 2 3734#if EV_FEATURE_API
2196 ++loop_count; 3735 ++loop_count;
2197#endif 3736#endif
2198 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3737 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2199 backend_poll (EV_A_ waittime); 3738 backend_poll (EV_A_ waittime);
2200 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 3739 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3740
3741 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3742
3743 ECB_MEMORY_FENCE_ACQUIRE;
3744 if (pipe_write_skipped)
3745 {
3746 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3747 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3748 }
3749
2201 3750
2202 /* update ev_rt_now, do magic */ 3751 /* update ev_rt_now, do magic */
2203 time_update (EV_A_ waittime + sleeptime); 3752 time_update (EV_A_ waittime + sleeptime);
2204 } 3753 }
2205 3754
… …
2212#if EV_IDLE_ENABLE 3761#if EV_IDLE_ENABLE
2213 /* queue idle watchers unless other events are pending */ 3762 /* queue idle watchers unless other events are pending */
2214 idle_reify (EV_A); 3763 idle_reify (EV_A);
2215#endif 3764#endif
2216 3765
3766#if EV_CHECK_ENABLE
2217 /* queue check watchers, to be executed first */ 3767 /* queue check watchers, to be executed first */
2218 if (expect_false (checkcnt)) 3768 if (expect_false (checkcnt))
2219 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3769 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3770#endif
2220 3771
2221 EV_INVOKE_PENDING; 3772 EV_INVOKE_PENDING;
2222 } 3773 }
2223 while (expect_true ( 3774 while (expect_true (
2224 activecnt 3775 activecnt
2225 && !loop_done 3776 && !loop_done
2226 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3777 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2227 )); 3778 ));
2228 3779
2229 if (loop_done == EVUNLOOP_ONE) 3780 if (loop_done == EVBREAK_ONE)
2230 loop_done = EVUNLOOP_CANCEL; 3781 loop_done = EVBREAK_CANCEL;
2231 3782
2232#if EV_MINIMAL < 2 3783#if EV_FEATURE_API
2233 --loop_depth; 3784 --loop_depth;
2234#endif 3785#endif
2235}
2236 3786
3787 return activecnt;
3788}
3789
2237void 3790void
2238ev_unloop (EV_P_ int how) 3791ev_break (EV_P_ int how) EV_NOEXCEPT
2239{ 3792{
2240 loop_done = how; 3793 loop_done = how;
2241} 3794}
2242 3795
2243void 3796void
2244ev_ref (EV_P) 3797ev_ref (EV_P) EV_NOEXCEPT
2245{ 3798{
2246 ++activecnt; 3799 ++activecnt;
2247} 3800}
2248 3801
2249void 3802void
2250ev_unref (EV_P) 3803ev_unref (EV_P) EV_NOEXCEPT
2251{ 3804{
2252 --activecnt; 3805 --activecnt;
2253} 3806}
2254 3807
2255void 3808void
2256ev_now_update (EV_P) 3809ev_now_update (EV_P) EV_NOEXCEPT
2257{ 3810{
2258 time_update (EV_A_ 1e100); 3811 time_update (EV_A_ 1e100);
2259} 3812}
2260 3813
2261void 3814void
2262ev_suspend (EV_P) 3815ev_suspend (EV_P) EV_NOEXCEPT
2263{ 3816{
2264 ev_now_update (EV_A); 3817 ev_now_update (EV_A);
2265} 3818}
2266 3819
2267void 3820void
2268ev_resume (EV_P) 3821ev_resume (EV_P) EV_NOEXCEPT
2269{ 3822{
2270 ev_tstamp mn_prev = mn_now; 3823 ev_tstamp mn_prev = mn_now;
2271 3824
2272 ev_now_update (EV_A); 3825 ev_now_update (EV_A);
2273 timers_reschedule (EV_A_ mn_now - mn_prev); 3826 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2290inline_size void 3843inline_size void
2291wlist_del (WL *head, WL elem) 3844wlist_del (WL *head, WL elem)
2292{ 3845{
2293 while (*head) 3846 while (*head)
2294 { 3847 {
2295 if (*head == elem) 3848 if (expect_true (*head == elem))
2296 { 3849 {
2297 *head = elem->next; 3850 *head = elem->next;
2298 return; 3851 break;
2299 } 3852 }
2300 3853
2301 head = &(*head)->next; 3854 head = &(*head)->next;
2302 } 3855 }
2303} 3856}
… …
2312 w->pending = 0; 3865 w->pending = 0;
2313 } 3866 }
2314} 3867}
2315 3868
2316int 3869int
2317ev_clear_pending (EV_P_ void *w) 3870ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
2318{ 3871{
2319 W w_ = (W)w; 3872 W w_ = (W)w;
2320 int pending = w_->pending; 3873 int pending = w_->pending;
2321 3874
2322 if (expect_true (pending)) 3875 if (expect_true (pending))
… …
2354 w->active = 0; 3907 w->active = 0;
2355} 3908}
2356 3909
2357/*****************************************************************************/ 3910/*****************************************************************************/
2358 3911
2359void noinline 3912noinline
3913void
2360ev_io_start (EV_P_ ev_io *w) 3914ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
2361{ 3915{
2362 int fd = w->fd; 3916 int fd = w->fd;
2363 3917
2364 if (expect_false (ev_is_active (w))) 3918 if (expect_false (ev_is_active (w)))
2365 return; 3919 return;
2366 3920
2367 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 3921 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2368 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 3922 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2369 3923
2370 EV_FREQUENT_CHECK; 3924 EV_FREQUENT_CHECK;
2371 3925
2372 ev_start (EV_A_ (W)w, 1); 3926 ev_start (EV_A_ (W)w, 1);
2373 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3927 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
2374 wlist_add (&anfds[fd].head, (WL)w); 3928 wlist_add (&anfds[fd].head, (WL)w);
3929
3930 /* common bug, apparently */
3931 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
2375 3932
2376 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3933 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2377 w->events &= ~EV__IOFDSET; 3934 w->events &= ~EV__IOFDSET;
2378 3935
2379 EV_FREQUENT_CHECK; 3936 EV_FREQUENT_CHECK;
2380} 3937}
2381 3938
2382void noinline 3939noinline
3940void
2383ev_io_stop (EV_P_ ev_io *w) 3941ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
2384{ 3942{
2385 clear_pending (EV_A_ (W)w); 3943 clear_pending (EV_A_ (W)w);
2386 if (expect_false (!ev_is_active (w))) 3944 if (expect_false (!ev_is_active (w)))
2387 return; 3945 return;
2388 3946
… …
2391 EV_FREQUENT_CHECK; 3949 EV_FREQUENT_CHECK;
2392 3950
2393 wlist_del (&anfds[w->fd].head, (WL)w); 3951 wlist_del (&anfds[w->fd].head, (WL)w);
2394 ev_stop (EV_A_ (W)w); 3952 ev_stop (EV_A_ (W)w);
2395 3953
2396 fd_change (EV_A_ w->fd, 1); 3954 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2397 3955
2398 EV_FREQUENT_CHECK; 3956 EV_FREQUENT_CHECK;
2399} 3957}
2400 3958
2401void noinline 3959noinline
3960void
2402ev_timer_start (EV_P_ ev_timer *w) 3961ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
2403{ 3962{
2404 if (expect_false (ev_is_active (w))) 3963 if (expect_false (ev_is_active (w)))
2405 return; 3964 return;
2406 3965
2407 ev_at (w) += mn_now; 3966 ev_at (w) += mn_now;
… …
2410 3969
2411 EV_FREQUENT_CHECK; 3970 EV_FREQUENT_CHECK;
2412 3971
2413 ++timercnt; 3972 ++timercnt;
2414 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 3973 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
2415 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 3974 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
2416 ANHE_w (timers [ev_active (w)]) = (WT)w; 3975 ANHE_w (timers [ev_active (w)]) = (WT)w;
2417 ANHE_at_cache (timers [ev_active (w)]); 3976 ANHE_at_cache (timers [ev_active (w)]);
2418 upheap (timers, ev_active (w)); 3977 upheap (timers, ev_active (w));
2419 3978
2420 EV_FREQUENT_CHECK; 3979 EV_FREQUENT_CHECK;
2421 3980
2422 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3981 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2423} 3982}
2424 3983
2425void noinline 3984noinline
3985void
2426ev_timer_stop (EV_P_ ev_timer *w) 3986ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
2427{ 3987{
2428 clear_pending (EV_A_ (W)w); 3988 clear_pending (EV_A_ (W)w);
2429 if (expect_false (!ev_is_active (w))) 3989 if (expect_false (!ev_is_active (w)))
2430 return; 3990 return;
2431 3991
… …
2443 timers [active] = timers [timercnt + HEAP0]; 4003 timers [active] = timers [timercnt + HEAP0];
2444 adjustheap (timers, timercnt, active); 4004 adjustheap (timers, timercnt, active);
2445 } 4005 }
2446 } 4006 }
2447 4007
2448 EV_FREQUENT_CHECK;
2449
2450 ev_at (w) -= mn_now; 4008 ev_at (w) -= mn_now;
2451 4009
2452 ev_stop (EV_A_ (W)w); 4010 ev_stop (EV_A_ (W)w);
2453}
2454 4011
4012 EV_FREQUENT_CHECK;
4013}
4014
2455void noinline 4015noinline
4016void
2456ev_timer_again (EV_P_ ev_timer *w) 4017ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
2457{ 4018{
2458 EV_FREQUENT_CHECK; 4019 EV_FREQUENT_CHECK;
4020
4021 clear_pending (EV_A_ (W)w);
2459 4022
2460 if (ev_is_active (w)) 4023 if (ev_is_active (w))
2461 { 4024 {
2462 if (w->repeat) 4025 if (w->repeat)
2463 { 4026 {
… …
2475 } 4038 }
2476 4039
2477 EV_FREQUENT_CHECK; 4040 EV_FREQUENT_CHECK;
2478} 4041}
2479 4042
4043ev_tstamp
4044ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
4045{
4046 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
4047}
4048
2480#if EV_PERIODIC_ENABLE 4049#if EV_PERIODIC_ENABLE
2481void noinline 4050noinline
4051void
2482ev_periodic_start (EV_P_ ev_periodic *w) 4052ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
2483{ 4053{
2484 if (expect_false (ev_is_active (w))) 4054 if (expect_false (ev_is_active (w)))
2485 return; 4055 return;
2486 4056
2487 if (w->reschedule_cb) 4057 if (w->reschedule_cb)
2488 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4058 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2489 else if (w->interval) 4059 else if (w->interval)
2490 { 4060 {
2491 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 4061 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2492 /* this formula differs from the one in periodic_reify because we do not always round up */ 4062 periodic_recalc (EV_A_ w);
2493 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2494 } 4063 }
2495 else 4064 else
2496 ev_at (w) = w->offset; 4065 ev_at (w) = w->offset;
2497 4066
2498 EV_FREQUENT_CHECK; 4067 EV_FREQUENT_CHECK;
2499 4068
2500 ++periodiccnt; 4069 ++periodiccnt;
2501 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4070 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2502 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4071 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
2503 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4072 ANHE_w (periodics [ev_active (w)]) = (WT)w;
2504 ANHE_at_cache (periodics [ev_active (w)]); 4073 ANHE_at_cache (periodics [ev_active (w)]);
2505 upheap (periodics, ev_active (w)); 4074 upheap (periodics, ev_active (w));
2506 4075
2507 EV_FREQUENT_CHECK; 4076 EV_FREQUENT_CHECK;
2508 4077
2509 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4078 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2510} 4079}
2511 4080
2512void noinline 4081noinline
4082void
2513ev_periodic_stop (EV_P_ ev_periodic *w) 4083ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
2514{ 4084{
2515 clear_pending (EV_A_ (W)w); 4085 clear_pending (EV_A_ (W)w);
2516 if (expect_false (!ev_is_active (w))) 4086 if (expect_false (!ev_is_active (w)))
2517 return; 4087 return;
2518 4088
… …
2530 periodics [active] = periodics [periodiccnt + HEAP0]; 4100 periodics [active] = periodics [periodiccnt + HEAP0];
2531 adjustheap (periodics, periodiccnt, active); 4101 adjustheap (periodics, periodiccnt, active);
2532 } 4102 }
2533 } 4103 }
2534 4104
2535 EV_FREQUENT_CHECK;
2536
2537 ev_stop (EV_A_ (W)w); 4105 ev_stop (EV_A_ (W)w);
2538}
2539 4106
4107 EV_FREQUENT_CHECK;
4108}
4109
2540void noinline 4110noinline
4111void
2541ev_periodic_again (EV_P_ ev_periodic *w) 4112ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
2542{ 4113{
2543 /* TODO: use adjustheap and recalculation */ 4114 /* TODO: use adjustheap and recalculation */
2544 ev_periodic_stop (EV_A_ w); 4115 ev_periodic_stop (EV_A_ w);
2545 ev_periodic_start (EV_A_ w); 4116 ev_periodic_start (EV_A_ w);
2546} 4117}
… …
2548 4119
2549#ifndef SA_RESTART 4120#ifndef SA_RESTART
2550# define SA_RESTART 0 4121# define SA_RESTART 0
2551#endif 4122#endif
2552 4123
4124#if EV_SIGNAL_ENABLE
4125
2553void noinline 4126noinline
4127void
2554ev_signal_start (EV_P_ ev_signal *w) 4128ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
2555{ 4129{
2556#if EV_MULTIPLICITY
2557 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2558#endif
2559 if (expect_false (ev_is_active (w))) 4130 if (expect_false (ev_is_active (w)))
2560 return; 4131 return;
2561 4132
2562 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0)); 4133 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2563 4134
2564 evpipe_init (EV_A); 4135#if EV_MULTIPLICITY
4136 assert (("libev: a signal must not be attached to two different loops",
4137 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2565 4138
2566 EV_FREQUENT_CHECK; 4139 signals [w->signum - 1].loop = EV_A;
4140 ECB_MEMORY_FENCE_RELEASE;
4141#endif
2567 4142
4143 EV_FREQUENT_CHECK;
4144
4145#if EV_USE_SIGNALFD
4146 if (sigfd == -2)
2568 { 4147 {
2569#ifndef _WIN32 4148 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2570 sigset_t full, prev; 4149 if (sigfd < 0 && errno == EINVAL)
2571 sigfillset (&full); 4150 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2572 sigprocmask (SIG_SETMASK, &full, &prev);
2573#endif
2574 4151
2575 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); 4152 if (sigfd >= 0)
4153 {
4154 fd_intern (sigfd); /* doing it twice will not hurt */
2576 4155
2577#ifndef _WIN32 4156 sigemptyset (&sigfd_set);
2578 sigprocmask (SIG_SETMASK, &prev, 0); 4157
2579#endif 4158 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
4159 ev_set_priority (&sigfd_w, EV_MAXPRI);
4160 ev_io_start (EV_A_ &sigfd_w);
4161 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
4162 }
2580 } 4163 }
4164
4165 if (sigfd >= 0)
4166 {
4167 /* TODO: check .head */
4168 sigaddset (&sigfd_set, w->signum);
4169 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
4170
4171 signalfd (sigfd, &sigfd_set, 0);
4172 }
4173#endif
2581 4174
2582 ev_start (EV_A_ (W)w, 1); 4175 ev_start (EV_A_ (W)w, 1);
2583 wlist_add (&signals [w->signum - 1].head, (WL)w); 4176 wlist_add (&signals [w->signum - 1].head, (WL)w);
2584 4177
2585 if (!((WL)w)->next) 4178 if (!((WL)w)->next)
4179# if EV_USE_SIGNALFD
4180 if (sigfd < 0) /*TODO*/
4181# endif
2586 { 4182 {
2587#if _WIN32 4183# ifdef _WIN32
4184 evpipe_init (EV_A);
4185
2588 signal (w->signum, ev_sighandler); 4186 signal (w->signum, ev_sighandler);
2589#else 4187# else
2590 struct sigaction sa; 4188 struct sigaction sa;
4189
4190 evpipe_init (EV_A);
4191
2591 sa.sa_handler = ev_sighandler; 4192 sa.sa_handler = ev_sighandler;
2592 sigfillset (&sa.sa_mask); 4193 sigfillset (&sa.sa_mask);
2593 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 4194 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2594 sigaction (w->signum, &sa, 0); 4195 sigaction (w->signum, &sa, 0);
4196
4197 if (origflags & EVFLAG_NOSIGMASK)
4198 {
4199 sigemptyset (&sa.sa_mask);
4200 sigaddset (&sa.sa_mask, w->signum);
4201 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
4202 }
2595#endif 4203#endif
2596 } 4204 }
2597 4205
2598 EV_FREQUENT_CHECK; 4206 EV_FREQUENT_CHECK;
2599} 4207}
2600 4208
2601void noinline 4209noinline
4210void
2602ev_signal_stop (EV_P_ ev_signal *w) 4211ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
2603{ 4212{
2604 clear_pending (EV_A_ (W)w); 4213 clear_pending (EV_A_ (W)w);
2605 if (expect_false (!ev_is_active (w))) 4214 if (expect_false (!ev_is_active (w)))
2606 return; 4215 return;
2607 4216
… …
2609 4218
2610 wlist_del (&signals [w->signum - 1].head, (WL)w); 4219 wlist_del (&signals [w->signum - 1].head, (WL)w);
2611 ev_stop (EV_A_ (W)w); 4220 ev_stop (EV_A_ (W)w);
2612 4221
2613 if (!signals [w->signum - 1].head) 4222 if (!signals [w->signum - 1].head)
4223 {
4224#if EV_MULTIPLICITY
4225 signals [w->signum - 1].loop = 0; /* unattach from signal */
4226#endif
4227#if EV_USE_SIGNALFD
4228 if (sigfd >= 0)
4229 {
4230 sigset_t ss;
4231
4232 sigemptyset (&ss);
4233 sigaddset (&ss, w->signum);
4234 sigdelset (&sigfd_set, w->signum);
4235
4236 signalfd (sigfd, &sigfd_set, 0);
4237 sigprocmask (SIG_UNBLOCK, &ss, 0);
4238 }
4239 else
4240#endif
2614 signal (w->signum, SIG_DFL); 4241 signal (w->signum, SIG_DFL);
4242 }
2615 4243
2616 EV_FREQUENT_CHECK; 4244 EV_FREQUENT_CHECK;
2617} 4245}
2618 4246
4247#endif
4248
4249#if EV_CHILD_ENABLE
4250
2619void 4251void
2620ev_child_start (EV_P_ ev_child *w) 4252ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
2621{ 4253{
2622#if EV_MULTIPLICITY 4254#if EV_MULTIPLICITY
2623 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4255 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2624#endif 4256#endif
2625 if (expect_false (ev_is_active (w))) 4257 if (expect_false (ev_is_active (w)))
2626 return; 4258 return;
2627 4259
2628 EV_FREQUENT_CHECK; 4260 EV_FREQUENT_CHECK;
2629 4261
2630 ev_start (EV_A_ (W)w, 1); 4262 ev_start (EV_A_ (W)w, 1);
2631 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4263 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2632 4264
2633 EV_FREQUENT_CHECK; 4265 EV_FREQUENT_CHECK;
2634} 4266}
2635 4267
2636void 4268void
2637ev_child_stop (EV_P_ ev_child *w) 4269ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
2638{ 4270{
2639 clear_pending (EV_A_ (W)w); 4271 clear_pending (EV_A_ (W)w);
2640 if (expect_false (!ev_is_active (w))) 4272 if (expect_false (!ev_is_active (w)))
2641 return; 4273 return;
2642 4274
2643 EV_FREQUENT_CHECK; 4275 EV_FREQUENT_CHECK;
2644 4276
2645 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4277 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2646 ev_stop (EV_A_ (W)w); 4278 ev_stop (EV_A_ (W)w);
2647 4279
2648 EV_FREQUENT_CHECK; 4280 EV_FREQUENT_CHECK;
2649} 4281}
4282
4283#endif
2650 4284
2651#if EV_STAT_ENABLE 4285#if EV_STAT_ENABLE
2652 4286
2653# ifdef _WIN32 4287# ifdef _WIN32
2654# undef lstat 4288# undef lstat
… …
2657 4291
2658#define DEF_STAT_INTERVAL 5.0074891 4292#define DEF_STAT_INTERVAL 5.0074891
2659#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4293#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2660#define MIN_STAT_INTERVAL 0.1074891 4294#define MIN_STAT_INTERVAL 0.1074891
2661 4295
2662static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4296noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2663 4297
2664#if EV_USE_INOTIFY 4298#if EV_USE_INOTIFY
2665# define EV_INOTIFY_BUFSIZE 8192
2666 4299
2667static void noinline 4300/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
4301# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
4302
4303noinline
4304static void
2668infy_add (EV_P_ ev_stat *w) 4305infy_add (EV_P_ ev_stat *w)
2669{ 4306{
2670 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); 4307 w->wd = inotify_add_watch (fs_fd, w->path,
4308 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4309 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4310 | IN_DONT_FOLLOW | IN_MASK_ADD);
2671 4311
2672 if (w->wd < 0) 4312 if (w->wd >= 0)
4313 {
4314 struct statfs sfs;
4315
4316 /* now local changes will be tracked by inotify, but remote changes won't */
4317 /* unless the filesystem is known to be local, we therefore still poll */
4318 /* also do poll on <2.6.25, but with normal frequency */
4319
4320 if (!fs_2625)
4321 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
4322 else if (!statfs (w->path, &sfs)
4323 && (sfs.f_type == 0x1373 /* devfs */
4324 || sfs.f_type == 0x4006 /* fat */
4325 || sfs.f_type == 0x4d44 /* msdos */
4326 || sfs.f_type == 0xEF53 /* ext2/3 */
4327 || sfs.f_type == 0x72b6 /* jffs2 */
4328 || sfs.f_type == 0x858458f6 /* ramfs */
4329 || sfs.f_type == 0x5346544e /* ntfs */
4330 || sfs.f_type == 0x3153464a /* jfs */
4331 || sfs.f_type == 0x9123683e /* btrfs */
4332 || sfs.f_type == 0x52654973 /* reiser3 */
4333 || sfs.f_type == 0x01021994 /* tmpfs */
4334 || sfs.f_type == 0x58465342 /* xfs */))
4335 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
4336 else
4337 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2673 { 4338 }
4339 else
4340 {
4341 /* can't use inotify, continue to stat */
2674 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4342 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2675 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2676 4343
2677 /* monitor some parent directory for speedup hints */ 4344 /* if path is not there, monitor some parent directory for speedup hints */
2678 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 4345 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2679 /* but an efficiency issue only */ 4346 /* but an efficiency issue only */
2680 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 4347 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2681 { 4348 {
2682 char path [4096]; 4349 char path [4096];
… …
2692 if (!pend || pend == path) 4359 if (!pend || pend == path)
2693 break; 4360 break;
2694 4361
2695 *pend = 0; 4362 *pend = 0;
2696 w->wd = inotify_add_watch (fs_fd, path, mask); 4363 w->wd = inotify_add_watch (fs_fd, path, mask);
2697 } 4364 }
2698 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 4365 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2699 } 4366 }
2700 } 4367 }
2701 4368
2702 if (w->wd >= 0) 4369 if (w->wd >= 0)
2703 {
2704 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4370 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2705 4371
2706 /* now local changes will be tracked by inotify, but remote changes won't */ 4372 /* now re-arm timer, if required */
2707 /* unless the filesystem it known to be local, we therefore still poll */ 4373 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2708 /* also do poll on <2.6.25, but with normal frequency */
2709 struct statfs sfs;
2710
2711 if (fs_2625 && !statfs (w->path, &sfs))
2712 if (sfs.f_type == 0x1373 /* devfs */
2713 || sfs.f_type == 0xEF53 /* ext2/3 */
2714 || sfs.f_type == 0x3153464a /* jfs */
2715 || sfs.f_type == 0x52654973 /* reiser3 */
2716 || sfs.f_type == 0x01021994 /* tempfs */
2717 || sfs.f_type == 0x58465342 /* xfs */)
2718 return;
2719
2720 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2721 ev_timer_again (EV_A_ &w->timer); 4374 ev_timer_again (EV_A_ &w->timer);
2722 } 4375 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2723} 4376}
2724 4377
2725static void noinline 4378noinline
4379static void
2726infy_del (EV_P_ ev_stat *w) 4380infy_del (EV_P_ ev_stat *w)
2727{ 4381{
2728 int slot; 4382 int slot;
2729 int wd = w->wd; 4383 int wd = w->wd;
2730 4384
2731 if (wd < 0) 4385 if (wd < 0)
2732 return; 4386 return;
2733 4387
2734 w->wd = -2; 4388 w->wd = -2;
2735 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 4389 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2736 wlist_del (&fs_hash [slot].head, (WL)w); 4390 wlist_del (&fs_hash [slot].head, (WL)w);
2737 4391
2738 /* remove this watcher, if others are watching it, they will rearm */ 4392 /* remove this watcher, if others are watching it, they will rearm */
2739 inotify_rm_watch (fs_fd, wd); 4393 inotify_rm_watch (fs_fd, wd);
2740} 4394}
2741 4395
2742static void noinline 4396noinline
4397static void
2743infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4398infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2744{ 4399{
2745 if (slot < 0) 4400 if (slot < 0)
2746 /* overflow, need to check for all hash slots */ 4401 /* overflow, need to check for all hash slots */
2747 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4402 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2748 infy_wd (EV_A_ slot, wd, ev); 4403 infy_wd (EV_A_ slot, wd, ev);
2749 else 4404 else
2750 { 4405 {
2751 WL w_; 4406 WL w_;
2752 4407
2753 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 4408 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2754 { 4409 {
2755 ev_stat *w = (ev_stat *)w_; 4410 ev_stat *w = (ev_stat *)w_;
2756 w_ = w_->next; /* lets us remove this watcher and all before it */ 4411 w_ = w_->next; /* lets us remove this watcher and all before it */
2757 4412
2758 if (w->wd == wd || wd == -1) 4413 if (w->wd == wd || wd == -1)
2759 { 4414 {
2760 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 4415 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2761 { 4416 {
2762 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4417 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2763 w->wd = -1; 4418 w->wd = -1;
2764 infy_add (EV_A_ w); /* re-add, no matter what */ 4419 infy_add (EV_A_ w); /* re-add, no matter what */
2765 } 4420 }
2766 4421
2767 stat_timer_cb (EV_A_ &w->timer, 0); 4422 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2772 4427
2773static void 4428static void
2774infy_cb (EV_P_ ev_io *w, int revents) 4429infy_cb (EV_P_ ev_io *w, int revents)
2775{ 4430{
2776 char buf [EV_INOTIFY_BUFSIZE]; 4431 char buf [EV_INOTIFY_BUFSIZE];
2777 struct inotify_event *ev = (struct inotify_event *)buf;
2778 int ofs; 4432 int ofs;
2779 int len = read (fs_fd, buf, sizeof (buf)); 4433 int len = read (fs_fd, buf, sizeof (buf));
2780 4434
2781 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 4435 for (ofs = 0; ofs < len; )
4436 {
4437 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2782 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4438 infy_wd (EV_A_ ev->wd, ev->wd, ev);
4439 ofs += sizeof (struct inotify_event) + ev->len;
4440 }
2783} 4441}
2784 4442
2785inline_size void 4443inline_size ecb_cold
4444void
2786check_2625 (EV_P) 4445ev_check_2625 (EV_P)
2787{ 4446{
2788 /* kernels < 2.6.25 are borked 4447 /* kernels < 2.6.25 are borked
2789 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4448 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2790 */ 4449 */
2791 struct utsname buf; 4450 if (ev_linux_version () < 0x020619)
2792 int major, minor, micro;
2793
2794 if (uname (&buf))
2795 return; 4451 return;
2796 4452
2797 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2798 return;
2799
2800 if (major < 2
2801 || (major == 2 && minor < 6)
2802 || (major == 2 && minor == 6 && micro < 25))
2803 return;
2804
2805 fs_2625 = 1; 4453 fs_2625 = 1;
4454}
4455
4456inline_size int
4457infy_newfd (void)
4458{
4459#if defined IN_CLOEXEC && defined IN_NONBLOCK
4460 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
4461 if (fd >= 0)
4462 return fd;
4463#endif
4464 return inotify_init ();
2806} 4465}
2807 4466
2808inline_size void 4467inline_size void
2809infy_init (EV_P) 4468infy_init (EV_P)
2810{ 4469{
2811 if (fs_fd != -2) 4470 if (fs_fd != -2)
2812 return; 4471 return;
2813 4472
2814 fs_fd = -1; 4473 fs_fd = -1;
2815 4474
2816 check_2625 (EV_A); 4475 ev_check_2625 (EV_A);
2817 4476
2818 fs_fd = inotify_init (); 4477 fs_fd = infy_newfd ();
2819 4478
2820 if (fs_fd >= 0) 4479 if (fs_fd >= 0)
2821 { 4480 {
4481 fd_intern (fs_fd);
2822 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 4482 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2823 ev_set_priority (&fs_w, EV_MAXPRI); 4483 ev_set_priority (&fs_w, EV_MAXPRI);
2824 ev_io_start (EV_A_ &fs_w); 4484 ev_io_start (EV_A_ &fs_w);
4485 ev_unref (EV_A);
2825 } 4486 }
2826} 4487}
2827 4488
2828inline_size void 4489inline_size void
2829infy_fork (EV_P) 4490infy_fork (EV_P)
… …
2831 int slot; 4492 int slot;
2832 4493
2833 if (fs_fd < 0) 4494 if (fs_fd < 0)
2834 return; 4495 return;
2835 4496
4497 ev_ref (EV_A);
4498 ev_io_stop (EV_A_ &fs_w);
2836 close (fs_fd); 4499 close (fs_fd);
2837 fs_fd = inotify_init (); 4500 fs_fd = infy_newfd ();
2838 4501
4502 if (fs_fd >= 0)
4503 {
4504 fd_intern (fs_fd);
4505 ev_io_set (&fs_w, fs_fd, EV_READ);
4506 ev_io_start (EV_A_ &fs_w);
4507 ev_unref (EV_A);
4508 }
4509
2839 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4510 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2840 { 4511 {
2841 WL w_ = fs_hash [slot].head; 4512 WL w_ = fs_hash [slot].head;
2842 fs_hash [slot].head = 0; 4513 fs_hash [slot].head = 0;
2843 4514
2844 while (w_) 4515 while (w_)
… …
2849 w->wd = -1; 4520 w->wd = -1;
2850 4521
2851 if (fs_fd >= 0) 4522 if (fs_fd >= 0)
2852 infy_add (EV_A_ w); /* re-add, no matter what */ 4523 infy_add (EV_A_ w); /* re-add, no matter what */
2853 else 4524 else
4525 {
4526 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
4527 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2854 ev_timer_again (EV_A_ &w->timer); 4528 ev_timer_again (EV_A_ &w->timer);
4529 if (ev_is_active (&w->timer)) ev_unref (EV_A);
4530 }
2855 } 4531 }
2856 } 4532 }
2857} 4533}
2858 4534
2859#endif 4535#endif
… …
2863#else 4539#else
2864# define EV_LSTAT(p,b) lstat (p, b) 4540# define EV_LSTAT(p,b) lstat (p, b)
2865#endif 4541#endif
2866 4542
2867void 4543void
2868ev_stat_stat (EV_P_ ev_stat *w) 4544ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
2869{ 4545{
2870 if (lstat (w->path, &w->attr) < 0) 4546 if (lstat (w->path, &w->attr) < 0)
2871 w->attr.st_nlink = 0; 4547 w->attr.st_nlink = 0;
2872 else if (!w->attr.st_nlink) 4548 else if (!w->attr.st_nlink)
2873 w->attr.st_nlink = 1; 4549 w->attr.st_nlink = 1;
2874} 4550}
2875 4551
2876static void noinline 4552noinline
4553static void
2877stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4554stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2878{ 4555{
2879 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4556 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2880 4557
2881 /* we copy this here each the time so that */ 4558 ev_statdata prev = w->attr;
2882 /* prev has the old value when the callback gets invoked */
2883 w->prev = w->attr;
2884 ev_stat_stat (EV_A_ w); 4559 ev_stat_stat (EV_A_ w);
2885 4560
2886 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 4561 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2887 if ( 4562 if (
2888 w->prev.st_dev != w->attr.st_dev 4563 prev.st_dev != w->attr.st_dev
2889 || w->prev.st_ino != w->attr.st_ino 4564 || prev.st_ino != w->attr.st_ino
2890 || w->prev.st_mode != w->attr.st_mode 4565 || prev.st_mode != w->attr.st_mode
2891 || w->prev.st_nlink != w->attr.st_nlink 4566 || prev.st_nlink != w->attr.st_nlink
2892 || w->prev.st_uid != w->attr.st_uid 4567 || prev.st_uid != w->attr.st_uid
2893 || w->prev.st_gid != w->attr.st_gid 4568 || prev.st_gid != w->attr.st_gid
2894 || w->prev.st_rdev != w->attr.st_rdev 4569 || prev.st_rdev != w->attr.st_rdev
2895 || w->prev.st_size != w->attr.st_size 4570 || prev.st_size != w->attr.st_size
2896 || w->prev.st_atime != w->attr.st_atime 4571 || prev.st_atime != w->attr.st_atime
2897 || w->prev.st_mtime != w->attr.st_mtime 4572 || prev.st_mtime != w->attr.st_mtime
2898 || w->prev.st_ctime != w->attr.st_ctime 4573 || prev.st_ctime != w->attr.st_ctime
2899 ) { 4574 ) {
4575 /* we only update w->prev on actual differences */
4576 /* in case we test more often than invoke the callback, */
4577 /* to ensure that prev is always different to attr */
4578 w->prev = prev;
4579
2900 #if EV_USE_INOTIFY 4580 #if EV_USE_INOTIFY
2901 if (fs_fd >= 0) 4581 if (fs_fd >= 0)
2902 { 4582 {
2903 infy_del (EV_A_ w); 4583 infy_del (EV_A_ w);
2904 infy_add (EV_A_ w); 4584 infy_add (EV_A_ w);
… …
2909 ev_feed_event (EV_A_ w, EV_STAT); 4589 ev_feed_event (EV_A_ w, EV_STAT);
2910 } 4590 }
2911} 4591}
2912 4592
2913void 4593void
2914ev_stat_start (EV_P_ ev_stat *w) 4594ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
2915{ 4595{
2916 if (expect_false (ev_is_active (w))) 4596 if (expect_false (ev_is_active (w)))
2917 return; 4597 return;
2918 4598
2919 ev_stat_stat (EV_A_ w); 4599 ev_stat_stat (EV_A_ w);
… …
2929 4609
2930 if (fs_fd >= 0) 4610 if (fs_fd >= 0)
2931 infy_add (EV_A_ w); 4611 infy_add (EV_A_ w);
2932 else 4612 else
2933#endif 4613#endif
4614 {
2934 ev_timer_again (EV_A_ &w->timer); 4615 ev_timer_again (EV_A_ &w->timer);
4616 ev_unref (EV_A);
4617 }
2935 4618
2936 ev_start (EV_A_ (W)w, 1); 4619 ev_start (EV_A_ (W)w, 1);
2937 4620
2938 EV_FREQUENT_CHECK; 4621 EV_FREQUENT_CHECK;
2939} 4622}
2940 4623
2941void 4624void
2942ev_stat_stop (EV_P_ ev_stat *w) 4625ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
2943{ 4626{
2944 clear_pending (EV_A_ (W)w); 4627 clear_pending (EV_A_ (W)w);
2945 if (expect_false (!ev_is_active (w))) 4628 if (expect_false (!ev_is_active (w)))
2946 return; 4629 return;
2947 4630
2948 EV_FREQUENT_CHECK; 4631 EV_FREQUENT_CHECK;
2949 4632
2950#if EV_USE_INOTIFY 4633#if EV_USE_INOTIFY
2951 infy_del (EV_A_ w); 4634 infy_del (EV_A_ w);
2952#endif 4635#endif
4636
4637 if (ev_is_active (&w->timer))
4638 {
4639 ev_ref (EV_A);
2953 ev_timer_stop (EV_A_ &w->timer); 4640 ev_timer_stop (EV_A_ &w->timer);
4641 }
2954 4642
2955 ev_stop (EV_A_ (W)w); 4643 ev_stop (EV_A_ (W)w);
2956 4644
2957 EV_FREQUENT_CHECK; 4645 EV_FREQUENT_CHECK;
2958} 4646}
2959#endif 4647#endif
2960 4648
2961#if EV_IDLE_ENABLE 4649#if EV_IDLE_ENABLE
2962void 4650void
2963ev_idle_start (EV_P_ ev_idle *w) 4651ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
2964{ 4652{
2965 if (expect_false (ev_is_active (w))) 4653 if (expect_false (ev_is_active (w)))
2966 return; 4654 return;
2967 4655
2968 pri_adjust (EV_A_ (W)w); 4656 pri_adjust (EV_A_ (W)w);
… …
2973 int active = ++idlecnt [ABSPRI (w)]; 4661 int active = ++idlecnt [ABSPRI (w)];
2974 4662
2975 ++idleall; 4663 ++idleall;
2976 ev_start (EV_A_ (W)w, active); 4664 ev_start (EV_A_ (W)w, active);
2977 4665
2978 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 4666 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
2979 idles [ABSPRI (w)][active - 1] = w; 4667 idles [ABSPRI (w)][active - 1] = w;
2980 } 4668 }
2981 4669
2982 EV_FREQUENT_CHECK; 4670 EV_FREQUENT_CHECK;
2983} 4671}
2984 4672
2985void 4673void
2986ev_idle_stop (EV_P_ ev_idle *w) 4674ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
2987{ 4675{
2988 clear_pending (EV_A_ (W)w); 4676 clear_pending (EV_A_ (W)w);
2989 if (expect_false (!ev_is_active (w))) 4677 if (expect_false (!ev_is_active (w)))
2990 return; 4678 return;
2991 4679
… …
3003 4691
3004 EV_FREQUENT_CHECK; 4692 EV_FREQUENT_CHECK;
3005} 4693}
3006#endif 4694#endif
3007 4695
4696#if EV_PREPARE_ENABLE
3008void 4697void
3009ev_prepare_start (EV_P_ ev_prepare *w) 4698ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
3010{ 4699{
3011 if (expect_false (ev_is_active (w))) 4700 if (expect_false (ev_is_active (w)))
3012 return; 4701 return;
3013 4702
3014 EV_FREQUENT_CHECK; 4703 EV_FREQUENT_CHECK;
3015 4704
3016 ev_start (EV_A_ (W)w, ++preparecnt); 4705 ev_start (EV_A_ (W)w, ++preparecnt);
3017 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4706 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
3018 prepares [preparecnt - 1] = w; 4707 prepares [preparecnt - 1] = w;
3019 4708
3020 EV_FREQUENT_CHECK; 4709 EV_FREQUENT_CHECK;
3021} 4710}
3022 4711
3023void 4712void
3024ev_prepare_stop (EV_P_ ev_prepare *w) 4713ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
3025{ 4714{
3026 clear_pending (EV_A_ (W)w); 4715 clear_pending (EV_A_ (W)w);
3027 if (expect_false (!ev_is_active (w))) 4716 if (expect_false (!ev_is_active (w)))
3028 return; 4717 return;
3029 4718
… …
3038 4727
3039 ev_stop (EV_A_ (W)w); 4728 ev_stop (EV_A_ (W)w);
3040 4729
3041 EV_FREQUENT_CHECK; 4730 EV_FREQUENT_CHECK;
3042} 4731}
4732#endif
3043 4733
4734#if EV_CHECK_ENABLE
3044void 4735void
3045ev_check_start (EV_P_ ev_check *w) 4736ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
3046{ 4737{
3047 if (expect_false (ev_is_active (w))) 4738 if (expect_false (ev_is_active (w)))
3048 return; 4739 return;
3049 4740
3050 EV_FREQUENT_CHECK; 4741 EV_FREQUENT_CHECK;
3051 4742
3052 ev_start (EV_A_ (W)w, ++checkcnt); 4743 ev_start (EV_A_ (W)w, ++checkcnt);
3053 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 4744 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
3054 checks [checkcnt - 1] = w; 4745 checks [checkcnt - 1] = w;
3055 4746
3056 EV_FREQUENT_CHECK; 4747 EV_FREQUENT_CHECK;
3057} 4748}
3058 4749
3059void 4750void
3060ev_check_stop (EV_P_ ev_check *w) 4751ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
3061{ 4752{
3062 clear_pending (EV_A_ (W)w); 4753 clear_pending (EV_A_ (W)w);
3063 if (expect_false (!ev_is_active (w))) 4754 if (expect_false (!ev_is_active (w)))
3064 return; 4755 return;
3065 4756
… …
3074 4765
3075 ev_stop (EV_A_ (W)w); 4766 ev_stop (EV_A_ (W)w);
3076 4767
3077 EV_FREQUENT_CHECK; 4768 EV_FREQUENT_CHECK;
3078} 4769}
4770#endif
3079 4771
3080#if EV_EMBED_ENABLE 4772#if EV_EMBED_ENABLE
3081void noinline 4773noinline
4774void
3082ev_embed_sweep (EV_P_ ev_embed *w) 4775ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
3083{ 4776{
3084 ev_loop (w->other, EVLOOP_NONBLOCK); 4777 ev_run (w->other, EVRUN_NOWAIT);
3085} 4778}
3086 4779
3087static void 4780static void
3088embed_io_cb (EV_P_ ev_io *io, int revents) 4781embed_io_cb (EV_P_ ev_io *io, int revents)
3089{ 4782{
3090 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4783 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3091 4784
3092 if (ev_cb (w)) 4785 if (ev_cb (w))
3093 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4786 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3094 else 4787 else
3095 ev_loop (w->other, EVLOOP_NONBLOCK); 4788 ev_run (w->other, EVRUN_NOWAIT);
3096} 4789}
3097 4790
3098static void 4791static void
3099embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4792embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3100{ 4793{
3101 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 4794 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
3102 4795
3103 { 4796 {
3104 struct ev_loop *loop = w->other; 4797 EV_P = w->other;
3105 4798
3106 while (fdchangecnt) 4799 while (fdchangecnt)
3107 { 4800 {
3108 fd_reify (EV_A); 4801 fd_reify (EV_A);
3109 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4802 ev_run (EV_A_ EVRUN_NOWAIT);
3110 } 4803 }
3111 } 4804 }
3112} 4805}
3113 4806
3114static void 4807static void
… …
3117 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 4810 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3118 4811
3119 ev_embed_stop (EV_A_ w); 4812 ev_embed_stop (EV_A_ w);
3120 4813
3121 { 4814 {
3122 struct ev_loop *loop = w->other; 4815 EV_P = w->other;
3123 4816
3124 ev_loop_fork (EV_A); 4817 ev_loop_fork (EV_A);
3125 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4818 ev_run (EV_A_ EVRUN_NOWAIT);
3126 } 4819 }
3127 4820
3128 ev_embed_start (EV_A_ w); 4821 ev_embed_start (EV_A_ w);
3129} 4822}
3130 4823
… …
3135 ev_idle_stop (EV_A_ idle); 4828 ev_idle_stop (EV_A_ idle);
3136} 4829}
3137#endif 4830#endif
3138 4831
3139void 4832void
3140ev_embed_start (EV_P_ ev_embed *w) 4833ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
3141{ 4834{
3142 if (expect_false (ev_is_active (w))) 4835 if (expect_false (ev_is_active (w)))
3143 return; 4836 return;
3144 4837
3145 { 4838 {
3146 struct ev_loop *loop = w->other; 4839 EV_P = w->other;
3147 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4840 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
3148 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 4841 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3149 } 4842 }
3150 4843
3151 EV_FREQUENT_CHECK; 4844 EV_FREQUENT_CHECK;
… …
3166 4859
3167 EV_FREQUENT_CHECK; 4860 EV_FREQUENT_CHECK;
3168} 4861}
3169 4862
3170void 4863void
3171ev_embed_stop (EV_P_ ev_embed *w) 4864ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
3172{ 4865{
3173 clear_pending (EV_A_ (W)w); 4866 clear_pending (EV_A_ (W)w);
3174 if (expect_false (!ev_is_active (w))) 4867 if (expect_false (!ev_is_active (w)))
3175 return; 4868 return;
3176 4869
… …
3178 4871
3179 ev_io_stop (EV_A_ &w->io); 4872 ev_io_stop (EV_A_ &w->io);
3180 ev_prepare_stop (EV_A_ &w->prepare); 4873 ev_prepare_stop (EV_A_ &w->prepare);
3181 ev_fork_stop (EV_A_ &w->fork); 4874 ev_fork_stop (EV_A_ &w->fork);
3182 4875
4876 ev_stop (EV_A_ (W)w);
4877
3183 EV_FREQUENT_CHECK; 4878 EV_FREQUENT_CHECK;
3184} 4879}
3185#endif 4880#endif
3186 4881
3187#if EV_FORK_ENABLE 4882#if EV_FORK_ENABLE
3188void 4883void
3189ev_fork_start (EV_P_ ev_fork *w) 4884ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
3190{ 4885{
3191 if (expect_false (ev_is_active (w))) 4886 if (expect_false (ev_is_active (w)))
3192 return; 4887 return;
3193 4888
3194 EV_FREQUENT_CHECK; 4889 EV_FREQUENT_CHECK;
3195 4890
3196 ev_start (EV_A_ (W)w, ++forkcnt); 4891 ev_start (EV_A_ (W)w, ++forkcnt);
3197 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 4892 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
3198 forks [forkcnt - 1] = w; 4893 forks [forkcnt - 1] = w;
3199 4894
3200 EV_FREQUENT_CHECK; 4895 EV_FREQUENT_CHECK;
3201} 4896}
3202 4897
3203void 4898void
3204ev_fork_stop (EV_P_ ev_fork *w) 4899ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
3205{ 4900{
3206 clear_pending (EV_A_ (W)w); 4901 clear_pending (EV_A_ (W)w);
3207 if (expect_false (!ev_is_active (w))) 4902 if (expect_false (!ev_is_active (w)))
3208 return; 4903 return;
3209 4904
… …
3220 4915
3221 EV_FREQUENT_CHECK; 4916 EV_FREQUENT_CHECK;
3222} 4917}
3223#endif 4918#endif
3224 4919
3225#if EV_ASYNC_ENABLE 4920#if EV_CLEANUP_ENABLE
3226void 4921void
3227ev_async_start (EV_P_ ev_async *w) 4922ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
3228{ 4923{
3229 if (expect_false (ev_is_active (w))) 4924 if (expect_false (ev_is_active (w)))
3230 return; 4925 return;
3231 4926
3232 evpipe_init (EV_A);
3233
3234 EV_FREQUENT_CHECK; 4927 EV_FREQUENT_CHECK;
3235 4928
3236 ev_start (EV_A_ (W)w, ++asynccnt); 4929 ev_start (EV_A_ (W)w, ++cleanupcnt);
3237 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 4930 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
3238 asyncs [asynccnt - 1] = w; 4931 cleanups [cleanupcnt - 1] = w;
3239 4932
4933 /* cleanup watchers should never keep a refcount on the loop */
4934 ev_unref (EV_A);
3240 EV_FREQUENT_CHECK; 4935 EV_FREQUENT_CHECK;
3241} 4936}
3242 4937
3243void 4938void
3244ev_async_stop (EV_P_ ev_async *w) 4939ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
3245{ 4940{
3246 clear_pending (EV_A_ (W)w); 4941 clear_pending (EV_A_ (W)w);
3247 if (expect_false (!ev_is_active (w))) 4942 if (expect_false (!ev_is_active (w)))
3248 return; 4943 return;
3249 4944
3250 EV_FREQUENT_CHECK; 4945 EV_FREQUENT_CHECK;
4946 ev_ref (EV_A);
4947
4948 {
4949 int active = ev_active (w);
4950
4951 cleanups [active - 1] = cleanups [--cleanupcnt];
4952 ev_active (cleanups [active - 1]) = active;
4953 }
4954
4955 ev_stop (EV_A_ (W)w);
4956
4957 EV_FREQUENT_CHECK;
4958}
4959#endif
4960
4961#if EV_ASYNC_ENABLE
4962void
4963ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
4964{
4965 if (expect_false (ev_is_active (w)))
4966 return;
4967
4968 w->sent = 0;
4969
4970 evpipe_init (EV_A);
4971
4972 EV_FREQUENT_CHECK;
4973
4974 ev_start (EV_A_ (W)w, ++asynccnt);
4975 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
4976 asyncs [asynccnt - 1] = w;
4977
4978 EV_FREQUENT_CHECK;
4979}
4980
4981void
4982ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
4983{
4984 clear_pending (EV_A_ (W)w);
4985 if (expect_false (!ev_is_active (w)))
4986 return;
4987
4988 EV_FREQUENT_CHECK;
3251 4989
3252 { 4990 {
3253 int active = ev_active (w); 4991 int active = ev_active (w);
3254 4992
3255 asyncs [active - 1] = asyncs [--asynccnt]; 4993 asyncs [active - 1] = asyncs [--asynccnt];
… …
3260 4998
3261 EV_FREQUENT_CHECK; 4999 EV_FREQUENT_CHECK;
3262} 5000}
3263 5001
3264void 5002void
3265ev_async_send (EV_P_ ev_async *w) 5003ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
3266{ 5004{
3267 w->sent = 1; 5005 w->sent = 1;
3268 evpipe_write (EV_A_ &gotasync); 5006 evpipe_write (EV_A_ &async_pending);
3269} 5007}
3270#endif 5008#endif
3271 5009
3272/*****************************************************************************/ 5010/*****************************************************************************/
3273 5011
… …
3307 5045
3308 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5046 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3309} 5047}
3310 5048
3311void 5049void
3312ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 5050ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
3313{ 5051{
3314 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5052 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3315
3316 if (expect_false (!once))
3317 {
3318 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
3319 return;
3320 }
3321 5053
3322 once->cb = cb; 5054 once->cb = cb;
3323 once->arg = arg; 5055 once->arg = arg;
3324 5056
3325 ev_init (&once->io, once_cb_io); 5057 ev_init (&once->io, once_cb_io);
… …
3338} 5070}
3339 5071
3340/*****************************************************************************/ 5072/*****************************************************************************/
3341 5073
3342#if EV_WALK_ENABLE 5074#if EV_WALK_ENABLE
5075ecb_cold
3343void 5076void
3344ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 5077ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
3345{ 5078{
3346 int i, j; 5079 int i, j;
3347 ev_watcher_list *wl, *wn; 5080 ev_watcher_list *wl, *wn;
3348 5081
3349 if (types & (EV_IO | EV_EMBED)) 5082 if (types & (EV_IO | EV_EMBED))
… …
3392 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 5125 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3393#endif 5126#endif
3394 5127
3395#if EV_IDLE_ENABLE 5128#if EV_IDLE_ENABLE
3396 if (types & EV_IDLE) 5129 if (types & EV_IDLE)
3397 for (j = NUMPRI; i--; ) 5130 for (j = NUMPRI; j--; )
3398 for (i = idlecnt [j]; i--; ) 5131 for (i = idlecnt [j]; i--; )
3399 cb (EV_A_ EV_IDLE, idles [j][i]); 5132 cb (EV_A_ EV_IDLE, idles [j][i]);
3400#endif 5133#endif
3401 5134
3402#if EV_FORK_ENABLE 5135#if EV_FORK_ENABLE
… …
3410 if (types & EV_ASYNC) 5143 if (types & EV_ASYNC)
3411 for (i = asynccnt; i--; ) 5144 for (i = asynccnt; i--; )
3412 cb (EV_A_ EV_ASYNC, asyncs [i]); 5145 cb (EV_A_ EV_ASYNC, asyncs [i]);
3413#endif 5146#endif
3414 5147
5148#if EV_PREPARE_ENABLE
3415 if (types & EV_PREPARE) 5149 if (types & EV_PREPARE)
3416 for (i = preparecnt; i--; ) 5150 for (i = preparecnt; i--; )
3417#if EV_EMBED_ENABLE 5151# if EV_EMBED_ENABLE
3418 if (ev_cb (prepares [i]) != embed_prepare_cb) 5152 if (ev_cb (prepares [i]) != embed_prepare_cb)
3419#endif 5153# endif
3420 cb (EV_A_ EV_PREPARE, prepares [i]); 5154 cb (EV_A_ EV_PREPARE, prepares [i]);
5155#endif
3421 5156
5157#if EV_CHECK_ENABLE
3422 if (types & EV_CHECK) 5158 if (types & EV_CHECK)
3423 for (i = checkcnt; i--; ) 5159 for (i = checkcnt; i--; )
3424 cb (EV_A_ EV_CHECK, checks [i]); 5160 cb (EV_A_ EV_CHECK, checks [i]);
5161#endif
3425 5162
5163#if EV_SIGNAL_ENABLE
3426 if (types & EV_SIGNAL) 5164 if (types & EV_SIGNAL)
3427 for (i = 0; i < signalmax; ++i) 5165 for (i = 0; i < EV_NSIG - 1; ++i)
3428 for (wl = signals [i].head; wl; ) 5166 for (wl = signals [i].head; wl; )
3429 { 5167 {
3430 wn = wl->next; 5168 wn = wl->next;
3431 cb (EV_A_ EV_SIGNAL, wl); 5169 cb (EV_A_ EV_SIGNAL, wl);
3432 wl = wn; 5170 wl = wn;
3433 } 5171 }
5172#endif
3434 5173
5174#if EV_CHILD_ENABLE
3435 if (types & EV_CHILD) 5175 if (types & EV_CHILD)
3436 for (i = EV_PID_HASHSIZE; i--; ) 5176 for (i = (EV_PID_HASHSIZE); i--; )
3437 for (wl = childs [i]; wl; ) 5177 for (wl = childs [i]; wl; )
3438 { 5178 {
3439 wn = wl->next; 5179 wn = wl->next;
3440 cb (EV_A_ EV_CHILD, wl); 5180 cb (EV_A_ EV_CHILD, wl);
3441 wl = wn; 5181 wl = wn;
3442 } 5182 }
5183#endif
3443/* EV_STAT 0x00001000 /* stat data changed */ 5184/* EV_STAT 0x00001000 /* stat data changed */
3444/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 5185/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3445} 5186}
3446#endif 5187#endif
3447 5188
3448#if EV_MULTIPLICITY 5189#if EV_MULTIPLICITY
3449 #include "ev_wrap.h" 5190 #include "ev_wrap.h"
3450#endif 5191#endif
3451 5192
3452#ifdef __cplusplus
3453}
3454#endif
3455

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