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Comparing libev/ev.c (file contents):
Revision 1.291 by root, Mon Jun 29 04:44:18 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)
1570
1571#if EV_MINPRI == EV_MAXPRI
1572# define ABSPRI(w) (((W)w), 0)
1573#else
397#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1574# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
1575#endif
398 1576
399#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1577#define EMPTY /* required for microsofts broken pseudo-c compiler */
400#define EMPTY2(a,b) /* used to suppress some warnings */
401 1578
402typedef ev_watcher *W; 1579typedef ev_watcher *W;
403typedef ev_watcher_list *WL; 1580typedef ev_watcher_list *WL;
404typedef ev_watcher_time *WT; 1581typedef ev_watcher_time *WT;
405 1582
406#define ev_active(w) ((W)(w))->active 1583#define ev_active(w) ((W)(w))->active
407#define ev_at(w) ((WT)(w))->at 1584#define ev_at(w) ((WT)(w))->at
408 1585
409#if EV_USE_REALTIME 1586#if EV_USE_REALTIME
410/* 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 */
411/* giving it a reasonably high chance of working on typical architetcures */ 1588/* giving it a reasonably high chance of working on typical architectures */
412static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 1589static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
413#endif 1590#endif
414 1591
415#if EV_USE_MONOTONIC 1592#if EV_USE_MONOTONIC
416static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 1593static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
417#endif 1594#endif
418 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
419#ifdef _WIN32 1606#ifdef _WIN32
420# include "ev_win32.c" 1607# include "ev_win32.c"
421#endif 1608#endif
422 1609
423/*****************************************************************************/ 1610/*****************************************************************************/
424 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
425static void (*syserr_cb)(const char *msg); 1713static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
426 1714
1715ecb_cold
427void 1716void
428ev_set_syserr_cb (void (*cb)(const char *msg)) 1717ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
429{ 1718{
430 syserr_cb = cb; 1719 syserr_cb = cb;
431} 1720}
432 1721
433static void noinline 1722noinline ecb_cold
1723static void
434ev_syserr (const char *msg) 1724ev_syserr (const char *msg)
435{ 1725{
436 if (!msg) 1726 if (!msg)
437 msg = "(libev) system error"; 1727 msg = "(libev) system error";
438 1728
439 if (syserr_cb) 1729 if (syserr_cb)
440 syserr_cb (msg); 1730 syserr_cb (msg);
441 else 1731 else
442 { 1732 {
1733#if EV_AVOID_STDIO
1734 ev_printerr (msg);
1735 ev_printerr (": ");
1736 ev_printerr (strerror (errno));
1737 ev_printerr ("\n");
1738#else
443 perror (msg); 1739 perror (msg);
1740#endif
444 abort (); 1741 abort ();
445 } 1742 }
446} 1743}
447 1744
448static void * 1745static void *
449ev_realloc_emul (void *ptr, long size) 1746ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
450{ 1747{
451 /* some systems, notably openbsd and darwin, fail to properly 1748 /* some systems, notably openbsd and darwin, fail to properly
452 * 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
453 * 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.
454 */ 1753 */
455 1754
456 if (size) 1755 if (size)
457 return realloc (ptr, size); 1756 return realloc (ptr, size);
458 1757
459 free (ptr); 1758 free (ptr);
460 return 0; 1759 return 0;
461} 1760}
462 1761
463static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1762static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
464 1763
1764ecb_cold
465void 1765void
466ev_set_allocator (void *(*cb)(void *ptr, long size)) 1766ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
467{ 1767{
468 alloc = cb; 1768 alloc = cb;
469} 1769}
470 1770
471inline_speed void * 1771inline_speed void *
… …
473{ 1773{
474 ptr = alloc (ptr, size); 1774 ptr = alloc (ptr, size);
475 1775
476 if (!ptr && size) 1776 if (!ptr && size)
477 { 1777 {
1778#if EV_AVOID_STDIO
1779 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1780#else
478 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1781 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1782#endif
479 abort (); 1783 abort ();
480 } 1784 }
481 1785
482 return ptr; 1786 return ptr;
483} 1787}
… …
485#define ev_malloc(size) ev_realloc (0, (size)) 1789#define ev_malloc(size) ev_realloc (0, (size))
486#define ev_free(ptr) ev_realloc ((ptr), 0) 1790#define ev_free(ptr) ev_realloc ((ptr), 0)
487 1791
488/*****************************************************************************/ 1792/*****************************************************************************/
489 1793
1794/* set in reify when reification needed */
1795#define EV_ANFD_REIFY 1
1796
490/* file descriptor info structure */ 1797/* file descriptor info structure */
491typedef struct 1798typedef struct
492{ 1799{
493 WL head; 1800 WL head;
494 unsigned char events; /* the events watched for */ 1801 unsigned char events; /* the events watched for */
495 unsigned char reify; /* flag set when this ANFD needs reification */ 1802 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
496 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 */
497 unsigned char unused; 1804 unsigned char unused;
498#if EV_USE_EPOLL 1805#if EV_USE_EPOLL
499 unsigned int egen; /* generation counter to counter epoll bugs */ 1806 unsigned int egen; /* generation counter to counter epoll bugs */
500#endif 1807#endif
501#if EV_SELECT_IS_WINSOCKET 1808#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
502 SOCKET handle; 1809 SOCKET handle;
1810#endif
1811#if EV_USE_IOCP
1812 OVERLAPPED or, ow;
503#endif 1813#endif
504} ANFD; 1814} ANFD;
505 1815
506/* stores the pending event set for a given watcher */ 1816/* stores the pending event set for a given watcher */
507typedef struct 1817typedef struct
… …
549 #undef VAR 1859 #undef VAR
550 }; 1860 };
551 #include "ev_wrap.h" 1861 #include "ev_wrap.h"
552 1862
553 static struct ev_loop default_loop_struct; 1863 static struct ev_loop default_loop_struct;
554 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 */
555 1865
556#else 1866#else
557 1867
558 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 */
559 #define VAR(name,decl) static decl; 1869 #define VAR(name,decl) static decl;
560 #include "ev_vars.h" 1870 #include "ev_vars.h"
561 #undef VAR 1871 #undef VAR
562 1872
563 static int ev_default_loop_ptr; 1873 static int ev_default_loop_ptr;
564 1874
565#endif 1875#endif
566 1876
1877#if EV_FEATURE_API
1878# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
1879# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
1880# define EV_INVOKE_PENDING invoke_cb (EV_A)
1881#else
1882# define EV_RELEASE_CB (void)0
1883# define EV_ACQUIRE_CB (void)0
1884# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
1885#endif
1886
1887#define EVBREAK_RECURSE 0x80
1888
567/*****************************************************************************/ 1889/*****************************************************************************/
568 1890
1891#ifndef EV_HAVE_EV_TIME
569ev_tstamp 1892ev_tstamp
570ev_time (void) 1893ev_time (void) EV_NOEXCEPT
571{ 1894{
572#if EV_USE_REALTIME 1895#if EV_USE_REALTIME
573 if (expect_true (have_realtime)) 1896 if (expect_true (have_realtime))
574 { 1897 {
575 struct timespec ts; 1898 struct timespec ts;
… …
580 1903
581 struct timeval tv; 1904 struct timeval tv;
582 gettimeofday (&tv, 0); 1905 gettimeofday (&tv, 0);
583 return tv.tv_sec + tv.tv_usec * 1e-6; 1906 return tv.tv_sec + tv.tv_usec * 1e-6;
584} 1907}
1908#endif
585 1909
586inline_size ev_tstamp 1910inline_size ev_tstamp
587get_clock (void) 1911get_clock (void)
588{ 1912{
589#if EV_USE_MONOTONIC 1913#if EV_USE_MONOTONIC
… …
598 return ev_time (); 1922 return ev_time ();
599} 1923}
600 1924
601#if EV_MULTIPLICITY 1925#if EV_MULTIPLICITY
602ev_tstamp 1926ev_tstamp
603ev_now (EV_P) 1927ev_now (EV_P) EV_NOEXCEPT
604{ 1928{
605 return ev_rt_now; 1929 return ev_rt_now;
606} 1930}
607#endif 1931#endif
608 1932
609void 1933void
610ev_sleep (ev_tstamp delay) 1934ev_sleep (ev_tstamp delay) EV_NOEXCEPT
611{ 1935{
612 if (delay > 0.) 1936 if (delay > 0.)
613 { 1937 {
614#if EV_USE_NANOSLEEP 1938#if EV_USE_NANOSLEEP
615 struct timespec ts; 1939 struct timespec ts;
616 1940
617 ts.tv_sec = (time_t)delay; 1941 EV_TS_SET (ts, delay);
618 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
619
620 nanosleep (&ts, 0); 1942 nanosleep (&ts, 0);
621#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) */
622 Sleep ((unsigned long)(delay * 1e3)); 1946 Sleep ((unsigned long)(delay * 1e3));
623#else 1947#else
624 struct timeval tv; 1948 struct timeval tv;
625 1949
626 tv.tv_sec = (time_t)delay;
627 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
628
629 /* 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 */
630 /* somehting nto guaranteed by newer posix versions, but guaranteed */ 1951 /* something not guaranteed by newer posix versions, but guaranteed */
631 /* by older ones */ 1952 /* by older ones */
1953 EV_TV_SET (tv, delay);
632 select (0, 0, 0, 0, &tv); 1954 select (0, 0, 0, 0, &tv);
633#endif 1955#endif
634 } 1956 }
635} 1957}
636 1958
637/*****************************************************************************/ 1959/*****************************************************************************/
638 1960
639#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 */
640 1962
641/* find a suitable new size for the given array, */ 1963/* find a suitable new size for the given array, */
642/* hopefully by rounding to a ncie-to-malloc size */ 1964/* hopefully by rounding to a nice-to-malloc size */
643inline_size int 1965inline_size int
644array_nextsize (int elem, int cur, int cnt) 1966array_nextsize (int elem, int cur, int cnt)
645{ 1967{
646 int ncur = cur + 1; 1968 int ncur = cur + 1;
647 1969
648 do 1970 do
649 ncur <<= 1; 1971 ncur <<= 1;
650 while (cnt > ncur); 1972 while (cnt > ncur);
651 1973
652 /* 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 */
653 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1975 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
654 { 1976 {
655 ncur *= elem; 1977 ncur *= elem;
656 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);
657 ncur = ncur - sizeof (void *) * 4; 1979 ncur = ncur - sizeof (void *) * 4;
… …
659 } 1981 }
660 1982
661 return ncur; 1983 return ncur;
662} 1984}
663 1985
664static noinline void * 1986noinline ecb_cold
1987static void *
665array_realloc (int elem, void *base, int *cur, int cnt) 1988array_realloc (int elem, void *base, int *cur, int cnt)
666{ 1989{
667 *cur = array_nextsize (elem, *cur, cnt); 1990 *cur = array_nextsize (elem, *cur, cnt);
668 return ev_realloc (base, elem * *cur); 1991 return ev_realloc (base, elem * *cur);
669} 1992}
670 1993
1994#define array_needsize_noinit(base,count)
1995
671#define array_init_zero(base,count) \ 1996#define array_needsize_zerofill(base,count) \
672 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1997 memset ((void *)(base), 0, sizeof (*(base)) * (count))
673 1998
674#define array_needsize(type,base,cur,cnt,init) \ 1999#define array_needsize(type,base,cur,cnt,init) \
675 if (expect_false ((cnt) > (cur))) \ 2000 if (expect_false ((cnt) > (cur))) \
676 { \ 2001 { \
677 int ocur_ = (cur); \ 2002 ecb_unused int ocur_ = (cur); \
678 (base) = (type *)array_realloc \ 2003 (base) = (type *)array_realloc \
679 (sizeof (type), (base), &(cur), (cnt)); \ 2004 (sizeof (type), (base), &(cur), (cnt)); \
680 init ((base) + (ocur_), (cur) - ocur_); \ 2005 init ((base) + (ocur_), (cur) - ocur_); \
681 } 2006 }
682 2007
… …
694 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
695 2020
696/*****************************************************************************/ 2021/*****************************************************************************/
697 2022
698/* dummy callback for pending events */ 2023/* dummy callback for pending events */
699static void noinline 2024noinline
2025static void
700pendingcb (EV_P_ ev_prepare *w, int revents) 2026pendingcb (EV_P_ ev_prepare *w, int revents)
701{ 2027{
702} 2028}
703 2029
704void noinline 2030noinline
2031void
705ev_feed_event (EV_P_ void *w, int revents) 2032ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
706{ 2033{
707 W w_ = (W)w; 2034 W w_ = (W)w;
708 int pri = ABSPRI (w_); 2035 int pri = ABSPRI (w_);
709 2036
710 if (expect_false (w_->pending)) 2037 if (expect_false (w_->pending))
711 pendings [pri][w_->pending - 1].events |= revents; 2038 pendings [pri][w_->pending - 1].events |= revents;
712 else 2039 else
713 { 2040 {
714 w_->pending = ++pendingcnt [pri]; 2041 w_->pending = ++pendingcnt [pri];
715 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2042 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
716 pendings [pri][w_->pending - 1].w = w_; 2043 pendings [pri][w_->pending - 1].w = w_;
717 pendings [pri][w_->pending - 1].events = revents; 2044 pendings [pri][w_->pending - 1].events = revents;
718 } 2045 }
2046
2047 pendingpri = NUMPRI - 1;
719} 2048}
720 2049
721inline_speed void 2050inline_speed void
722feed_reverse (EV_P_ W w) 2051feed_reverse (EV_P_ W w)
723{ 2052{
724 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2053 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
725 rfeeds [rfeedcnt++] = w; 2054 rfeeds [rfeedcnt++] = w;
726} 2055}
727 2056
728inline_size void 2057inline_size void
729feed_reverse_done (EV_P_ int revents) 2058feed_reverse_done (EV_P_ int revents)
… …
743} 2072}
744 2073
745/*****************************************************************************/ 2074/*****************************************************************************/
746 2075
747inline_speed void 2076inline_speed void
748fd_event (EV_P_ int fd, int revents) 2077fd_event_nocheck (EV_P_ int fd, int revents)
749{ 2078{
750 ANFD *anfd = anfds + fd; 2079 ANFD *anfd = anfds + fd;
751 ev_io *w; 2080 ev_io *w;
752 2081
753 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)
… …
757 if (ev) 2086 if (ev)
758 ev_feed_event (EV_A_ (W)w, ev); 2087 ev_feed_event (EV_A_ (W)w, ev);
759 } 2088 }
760} 2089}
761 2090
762void 2091/* do not submit kernel events for fds that have reify set */
2092/* because that means they changed while we were polling for new events */
2093inline_speed void
763ev_feed_fd_event (EV_P_ int fd, int revents) 2094fd_event (EV_P_ int fd, int revents)
2095{
2096 ANFD *anfd = anfds + fd;
2097
2098 if (expect_true (!anfd->reify))
2099 fd_event_nocheck (EV_A_ fd, revents);
2100}
2101
2102void
2103ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
764{ 2104{
765 if (fd >= 0 && fd < anfdmax) 2105 if (fd >= 0 && fd < anfdmax)
766 fd_event (EV_A_ fd, revents); 2106 fd_event_nocheck (EV_A_ fd, revents);
767} 2107}
768 2108
769/* make sure the external fd watch events are in-sync */ 2109/* make sure the external fd watch events are in-sync */
770/* with the kernel/libev internal state */ 2110/* with the kernel/libev internal state */
771inline_size void 2111inline_size void
772fd_reify (EV_P) 2112fd_reify (EV_P)
773{ 2113{
774 int i; 2114 int i;
775 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
776 for (i = 0; i < fdchangecnt; ++i) 2141 for (i = 0; i < fdchangecnt; ++i)
777 { 2142 {
778 int fd = fdchanges [i]; 2143 int fd = fdchanges [i];
779 ANFD *anfd = anfds + fd; 2144 ANFD *anfd = anfds + fd;
780 ev_io *w; 2145 ev_io *w;
781 2146
782 unsigned char events = 0; 2147 unsigned char o_events = anfd->events;
2148 unsigned char o_reify = anfd->reify;
783 2149
784 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2150 anfd->reify = 0;
785 events |= (unsigned char)w->events;
786 2151
787#if EV_SELECT_IS_WINSOCKET 2152 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
788 if (events)
789 { 2153 {
790 unsigned long arg; 2154 anfd->events = 0;
791 #ifdef EV_FD_TO_WIN32_HANDLE 2155
792 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 2156 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
793 #else 2157 anfd->events |= (unsigned char)w->events;
794 anfd->handle = _get_osfhandle (fd); 2158
795 #endif 2159 if (o_events != anfd->events)
796 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 2160 o_reify = EV__IOFDSET; /* actually |= */
797 } 2161 }
798#endif
799 2162
800 { 2163 if (o_reify & EV__IOFDSET)
801 unsigned char o_events = anfd->events;
802 unsigned char o_reify = anfd->reify;
803
804 anfd->reify = 0;
805 anfd->events = events;
806
807 if (o_events != events || o_reify & EV__IOFDSET)
808 backend_modify (EV_A_ fd, o_events, events); 2164 backend_modify (EV_A_ fd, o_events, anfd->events);
809 }
810 } 2165 }
811 2166
812 fdchangecnt = 0; 2167 fdchangecnt = 0;
813} 2168}
814 2169
815/* something about the given fd changed */ 2170/* something about the given fd changed */
816inline_size void 2171inline_size
2172void
817fd_change (EV_P_ int fd, int flags) 2173fd_change (EV_P_ int fd, int flags)
818{ 2174{
819 unsigned char reify = anfds [fd].reify; 2175 unsigned char reify = anfds [fd].reify;
820 anfds [fd].reify |= flags; 2176 anfds [fd].reify |= flags;
821 2177
822 if (expect_true (!reify)) 2178 if (expect_true (!reify))
823 { 2179 {
824 ++fdchangecnt; 2180 ++fdchangecnt;
825 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2181 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
826 fdchanges [fdchangecnt - 1] = fd; 2182 fdchanges [fdchangecnt - 1] = fd;
827 } 2183 }
828} 2184}
829 2185
830/* 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 */
831inline_speed void 2187inline_speed ecb_cold void
832fd_kill (EV_P_ int fd) 2188fd_kill (EV_P_ int fd)
833{ 2189{
834 ev_io *w; 2190 ev_io *w;
835 2191
836 while ((w = (ev_io *)anfds [fd].head)) 2192 while ((w = (ev_io *)anfds [fd].head))
… …
838 ev_io_stop (EV_A_ w); 2194 ev_io_stop (EV_A_ w);
839 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);
840 } 2196 }
841} 2197}
842 2198
843/* check whether the given fd is atcually valid, for error recovery */ 2199/* check whether the given fd is actually valid, for error recovery */
844inline_size int 2200inline_size ecb_cold int
845fd_valid (int fd) 2201fd_valid (int fd)
846{ 2202{
847#ifdef _WIN32 2203#ifdef _WIN32
848 return _get_osfhandle (fd) != -1; 2204 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
849#else 2205#else
850 return fcntl (fd, F_GETFD) != -1; 2206 return fcntl (fd, F_GETFD) != -1;
851#endif 2207#endif
852} 2208}
853 2209
854/* called on EBADF to verify fds */ 2210/* called on EBADF to verify fds */
855static void noinline 2211noinline ecb_cold
2212static void
856fd_ebadf (EV_P) 2213fd_ebadf (EV_P)
857{ 2214{
858 int fd; 2215 int fd;
859 2216
860 for (fd = 0; fd < anfdmax; ++fd) 2217 for (fd = 0; fd < anfdmax; ++fd)
… …
862 if (!fd_valid (fd) && errno == EBADF) 2219 if (!fd_valid (fd) && errno == EBADF)
863 fd_kill (EV_A_ fd); 2220 fd_kill (EV_A_ fd);
864} 2221}
865 2222
866/* 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 */
867static void noinline 2224noinline ecb_cold
2225static void
868fd_enomem (EV_P) 2226fd_enomem (EV_P)
869{ 2227{
870 int fd; 2228 int fd;
871 2229
872 for (fd = anfdmax; fd--; ) 2230 for (fd = anfdmax; fd--; )
873 if (anfds [fd].events) 2231 if (anfds [fd].events)
874 { 2232 {
875 fd_kill (EV_A_ fd); 2233 fd_kill (EV_A_ fd);
876 return; 2234 break;
877 } 2235 }
878} 2236}
879 2237
880/* 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 */
881static void noinline 2239noinline
2240static void
882fd_rearm_all (EV_P) 2241fd_rearm_all (EV_P)
883{ 2242{
884 int fd; 2243 int fd;
885 2244
886 for (fd = 0; fd < anfdmax; ++fd) 2245 for (fd = 0; fd < anfdmax; ++fd)
887 if (anfds [fd].events) 2246 if (anfds [fd].events)
888 { 2247 {
889 anfds [fd].events = 0; 2248 anfds [fd].events = 0;
890 anfds [fd].emask = 0; 2249 anfds [fd].emask = 0;
891 fd_change (EV_A_ fd, EV__IOFDSET | 1); 2250 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
892 } 2251 }
893} 2252}
894 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
895/*****************************************************************************/ 2268/*****************************************************************************/
896 2269
897/* 2270/*
898 * 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
899 * 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
900 * the branching factor of the d-tree. 2273 * the branching factor of the d-tree.
901 */ 2274 */
902 2275
903/* 2276/*
… …
971 2344
972 for (;;) 2345 for (;;)
973 { 2346 {
974 int c = k << 1; 2347 int c = k << 1;
975 2348
976 if (c > N + HEAP0 - 1) 2349 if (c >= N + HEAP0)
977 break; 2350 break;
978 2351
979 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])
980 ? 1 : 0; 2353 ? 1 : 0;
981 2354
… …
1017 2390
1018/* move an element suitably so it is in a correct place */ 2391/* move an element suitably so it is in a correct place */
1019inline_size void 2392inline_size void
1020adjustheap (ANHE *heap, int N, int k) 2393adjustheap (ANHE *heap, int N, int k)
1021{ 2394{
1022 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)]))
1023 upheap (heap, k); 2396 upheap (heap, k);
1024 else 2397 else
1025 downheap (heap, N, k); 2398 downheap (heap, N, k);
1026} 2399}
1027 2400
… …
1040/*****************************************************************************/ 2413/*****************************************************************************/
1041 2414
1042/* associate signal watchers to a signal signal */ 2415/* associate signal watchers to a signal signal */
1043typedef struct 2416typedef struct
1044{ 2417{
2418 EV_ATOMIC_T pending;
2419#if EV_MULTIPLICITY
2420 EV_P;
2421#endif
1045 WL head; 2422 WL head;
1046 EV_ATOMIC_T gotsig;
1047} ANSIG; 2423} ANSIG;
1048 2424
1049static ANSIG *signals; 2425static ANSIG signals [EV_NSIG - 1];
1050static int signalmax;
1051
1052static EV_ATOMIC_T gotsig;
1053 2426
1054/*****************************************************************************/ 2427/*****************************************************************************/
1055 2428
1056/* used to prepare libev internal fd's */ 2429#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1057/* 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
1058inline_speed void 2477inline_speed void
1059fd_intern (int fd) 2478evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1060{ 2479{
1061#ifdef _WIN32 2480 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1062 unsigned long arg = 1;
1063 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1064#else
1065 fcntl (fd, F_SETFD, FD_CLOEXEC);
1066 fcntl (fd, F_SETFL, O_NONBLOCK);
1067#endif
1068}
1069 2481
1070static void noinline 2482 if (expect_true (*flag))
1071evpipe_init (EV_P) 2483 return;
1072{ 2484
1073 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)
1074 { 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
1075#if EV_USE_EVENTFD 2501#if EV_USE_EVENTFD
1076 if ((evfd = eventfd (0, 0)) >= 0) 2502 if (evpipe [0] < 0)
1077 { 2503 {
1078 evpipe [0] = -1; 2504 uint64_t counter = 1;
1079 fd_intern (evfd); 2505 write (evpipe [1], &counter, sizeof (uint64_t));
1080 ev_io_set (&pipe_w, evfd, EV_READ);
1081 } 2506 }
1082 else 2507 else
1083#endif 2508#endif
1084 { 2509 {
1085 while (pipe (evpipe)) 2510#ifdef _WIN32
1086 ev_syserr ("(libev) error creating signal/async pipe"); 2511 WSABUF buf;
1087 2512 DWORD sent;
1088 fd_intern (evpipe [0]); 2513 buf.buf = (char *)&buf;
1089 fd_intern (evpipe [1]); 2514 buf.len = 1;
1090 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
1091 } 2519 }
1092
1093 ev_io_start (EV_A_ &pipe_w);
1094 ev_unref (EV_A); /* watcher should not keep loop alive */
1095 }
1096}
1097
1098inline_size void
1099evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1100{
1101 if (!*flag)
1102 {
1103 int old_errno = errno; /* save errno because write might clobber it */
1104
1105 *flag = 1;
1106
1107#if EV_USE_EVENTFD
1108 if (evfd >= 0)
1109 {
1110 uint64_t counter = 1;
1111 write (evfd, &counter, sizeof (uint64_t));
1112 }
1113 else
1114#endif
1115 write (evpipe [1], &old_errno, 1);
1116 2520
1117 errno = old_errno; 2521 errno = old_errno;
1118 } 2522 }
1119} 2523}
1120 2524
1121/* called whenever the libev signal pipe */ 2525/* called whenever the libev signal pipe */
1122/* got some events (signal, async) */ 2526/* got some events (signal, async) */
1123static void 2527static void
1124pipecb (EV_P_ ev_io *iow, int revents) 2528pipecb (EV_P_ ev_io *iow, int revents)
1125{ 2529{
2530 int i;
2531
2532 if (revents & EV_READ)
2533 {
1126#if EV_USE_EVENTFD 2534#if EV_USE_EVENTFD
1127 if (evfd >= 0) 2535 if (evpipe [0] < 0)
1128 { 2536 {
1129 uint64_t counter; 2537 uint64_t counter;
1130 read (evfd, &counter, sizeof (uint64_t)); 2538 read (evpipe [1], &counter, sizeof (uint64_t));
1131 } 2539 }
1132 else 2540 else
1133#endif 2541#endif
1134 { 2542 {
1135 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
1136 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)
1137 } 2563 {
2564 sig_pending = 0;
1138 2565
1139 if (gotsig && ev_is_default_loop (EV_A)) 2566 ECB_MEMORY_FENCE;
1140 {
1141 int signum;
1142 gotsig = 0;
1143 2567
1144 for (signum = signalmax; signum--; ) 2568 for (i = EV_NSIG - 1; i--; )
1145 if (signals [signum].gotsig) 2569 if (expect_false (signals [i].pending))
1146 ev_feed_signal_event (EV_A_ signum + 1); 2570 ev_feed_signal_event (EV_A_ i + 1);
1147 } 2571 }
2572#endif
1148 2573
1149#if EV_ASYNC_ENABLE 2574#if EV_ASYNC_ENABLE
1150 if (gotasync) 2575 if (async_pending)
1151 { 2576 {
1152 int i; 2577 async_pending = 0;
1153 gotasync = 0; 2578
2579 ECB_MEMORY_FENCE;
1154 2580
1155 for (i = asynccnt; i--; ) 2581 for (i = asynccnt; i--; )
1156 if (asyncs [i]->sent) 2582 if (asyncs [i]->sent)
1157 { 2583 {
1158 asyncs [i]->sent = 0; 2584 asyncs [i]->sent = 0;
2585 ECB_MEMORY_FENCE_RELEASE;
1159 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2586 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1160 } 2587 }
1161 } 2588 }
1162#endif 2589#endif
1163} 2590}
1164 2591
1165/*****************************************************************************/ 2592/*****************************************************************************/
1166 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
1167static void 2610static void
1168ev_sighandler (int signum) 2611ev_sighandler (int signum)
1169{ 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
1170#if EV_MULTIPLICITY 2631#if EV_MULTIPLICITY
1171 struct ev_loop *loop = &default_loop_struct; 2632 /* it is permissible to try to feed a signal to the wrong loop */
1172#endif 2633 /* or, likely more useful, feeding a signal nobody is waiting for */
1173 2634
1174#if _WIN32 2635 if (expect_false (signals [signum].loop != EV_A))
1175 signal (signum, ev_sighandler);
1176#endif
1177
1178 signals [signum - 1].gotsig = 1;
1179 evpipe_write (EV_A_ &gotsig);
1180}
1181
1182void noinline
1183ev_feed_signal_event (EV_P_ int signum)
1184{
1185 WL w;
1186
1187#if EV_MULTIPLICITY
1188 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1189#endif
1190
1191 --signum;
1192
1193 if (signum < 0 || signum >= signalmax)
1194 return; 2636 return;
2637#endif
1195 2638
1196 signals [signum].gotsig = 0; 2639 signals [signum].pending = 0;
2640 ECB_MEMORY_FENCE_RELEASE;
1197 2641
1198 for (w = signals [signum].head; w; w = w->next) 2642 for (w = signals [signum].head; w; w = w->next)
1199 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2643 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1200} 2644}
1201 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
1202/*****************************************************************************/ 2668/*****************************************************************************/
1203 2669
2670#if EV_CHILD_ENABLE
1204static WL childs [EV_PID_HASHSIZE]; 2671static WL childs [EV_PID_HASHSIZE];
1205
1206#ifndef _WIN32
1207 2672
1208static ev_signal childev; 2673static ev_signal childev;
1209 2674
1210#ifndef WIFCONTINUED 2675#ifndef WIFCONTINUED
1211# define WIFCONTINUED(status) 0 2676# define WIFCONTINUED(status) 0
… …
1216child_reap (EV_P_ int chain, int pid, int status) 2681child_reap (EV_P_ int chain, int pid, int status)
1217{ 2682{
1218 ev_child *w; 2683 ev_child *w;
1219 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2684 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1220 2685
1221 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)
1222 { 2687 {
1223 if ((w->pid == pid || !w->pid) 2688 if ((w->pid == pid || !w->pid)
1224 && (!traced || (w->flags & 1))) 2689 && (!traced || (w->flags & 1)))
1225 { 2690 {
1226 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 */
… …
1251 /* 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 */
1252 /* 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 */
1253 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2718 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1254 2719
1255 child_reap (EV_A_ pid, pid, status); 2720 child_reap (EV_A_ pid, pid, status);
1256 if (EV_PID_HASHSIZE > 1) 2721 if ((EV_PID_HASHSIZE) > 1)
1257 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 */
1258} 2723}
1259 2724
1260#endif 2725#endif
1261 2726
1262/*****************************************************************************/ 2727/*****************************************************************************/
1263 2728
2729#if EV_USE_IOCP
2730# include "ev_iocp.c"
2731#endif
1264#if EV_USE_PORT 2732#if EV_USE_PORT
1265# include "ev_port.c" 2733# include "ev_port.c"
1266#endif 2734#endif
1267#if EV_USE_KQUEUE 2735#if EV_USE_KQUEUE
1268# include "ev_kqueue.c" 2736# include "ev_kqueue.c"
1269#endif 2737#endif
2738#if EV_USE_LINUXAIO
2739# include "ev_linuxaio.c"
2740#endif
1270#if EV_USE_EPOLL 2741#if EV_USE_EPOLL
1271# include "ev_epoll.c" 2742# include "ev_epoll.c"
1272#endif 2743#endif
1273#if EV_USE_POLL 2744#if EV_USE_POLL
1274# include "ev_poll.c" 2745# include "ev_poll.c"
1275#endif 2746#endif
1276#if EV_USE_SELECT 2747#if EV_USE_SELECT
1277# include "ev_select.c" 2748# include "ev_select.c"
1278#endif 2749#endif
1279 2750
1280int 2751ecb_cold int
1281ev_version_major (void) 2752ev_version_major (void) EV_NOEXCEPT
1282{ 2753{
1283 return EV_VERSION_MAJOR; 2754 return EV_VERSION_MAJOR;
1284} 2755}
1285 2756
1286int 2757ecb_cold int
1287ev_version_minor (void) 2758ev_version_minor (void) EV_NOEXCEPT
1288{ 2759{
1289 return EV_VERSION_MINOR; 2760 return EV_VERSION_MINOR;
1290} 2761}
1291 2762
1292/* 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 */
1293int inline_size 2764inline_size ecb_cold int
1294enable_secure (void) 2765enable_secure (void)
1295{ 2766{
1296#ifdef _WIN32 2767#ifdef _WIN32
1297 return 0; 2768 return 0;
1298#else 2769#else
1299 return getuid () != geteuid () 2770 return getuid () != geteuid ()
1300 || getgid () != getegid (); 2771 || getgid () != getegid ();
1301#endif 2772#endif
1302} 2773}
1303 2774
2775ecb_cold
1304unsigned int 2776unsigned int
1305ev_supported_backends (void) 2777ev_supported_backends (void) EV_NOEXCEPT
1306{ 2778{
1307 unsigned int flags = 0; 2779 unsigned int flags = 0;
1308 2780
1309 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2781 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1310 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2782 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
1311 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 2783 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2784 if (EV_USE_LINUXAIO) flags |= EVBACKEND_LINUXAIO;
1312 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 2785 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
1313 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2786 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
1314 2787
1315 return flags; 2788 return flags;
1316} 2789}
1317 2790
2791ecb_cold
1318unsigned int 2792unsigned int
1319ev_recommended_backends (void) 2793ev_recommended_backends (void) EV_NOEXCEPT
1320{ 2794{
1321 unsigned int flags = ev_supported_backends (); 2795 unsigned int flags = ev_supported_backends ();
1322 2796
1323#ifndef __NetBSD__ 2797#ifndef __NetBSD__
1324 /* kqueue is borked on everything but netbsd apparently */ 2798 /* kqueue is borked on everything but netbsd apparently */
… …
1328#ifdef __APPLE__ 2802#ifdef __APPLE__
1329 /* only select works correctly on that "unix-certified" platform */ 2803 /* only select works correctly on that "unix-certified" platform */
1330 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2804 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1331 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 */
1332#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;
1333 2813
1334 return flags; 2814 return flags;
1335} 2815}
1336 2816
2817ecb_cold
1337unsigned int 2818unsigned int
1338ev_embeddable_backends (void) 2819ev_embeddable_backends (void) EV_NOEXCEPT
1339{ 2820{
1340 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2821 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1341 2822
1342 /* 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 */
1343 /* please fix it and tell me how to detect the fix */ 2824 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1344 flags &= ~EVBACKEND_EPOLL; 2825 flags &= ~EVBACKEND_EPOLL;
1345 2826
1346 return flags; 2827 return flags;
1347} 2828}
1348 2829
1349unsigned int 2830unsigned int
1350ev_backend (EV_P) 2831ev_backend (EV_P) EV_NOEXCEPT
1351{ 2832{
1352 return backend; 2833 return backend;
1353} 2834}
1354 2835
2836#if EV_FEATURE_API
1355unsigned int 2837unsigned int
1356ev_loop_count (EV_P) 2838ev_iteration (EV_P) EV_NOEXCEPT
1357{ 2839{
1358 return loop_count; 2840 return loop_count;
1359} 2841}
1360 2842
2843unsigned int
2844ev_depth (EV_P) EV_NOEXCEPT
2845{
2846 return loop_depth;
2847}
2848
1361void 2849void
1362ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2850ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1363{ 2851{
1364 io_blocktime = interval; 2852 io_blocktime = interval;
1365} 2853}
1366 2854
1367void 2855void
1368ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2856ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1369{ 2857{
1370 timeout_blocktime = interval; 2858 timeout_blocktime = interval;
1371} 2859}
1372 2860
2861void
2862ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
2863{
2864 userdata = data;
2865}
2866
2867void *
2868ev_userdata (EV_P) EV_NOEXCEPT
2869{
2870 return userdata;
2871}
2872
2873void
2874ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
2875{
2876 invoke_cb = invoke_pending_cb;
2877}
2878
2879void
2880ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
2881{
2882 release_cb = release;
2883 acquire_cb = acquire;
2884}
2885#endif
2886
1373/* initialise a loop structure, must be zero-initialised */ 2887/* initialise a loop structure, must be zero-initialised */
1374static void noinline 2888noinline ecb_cold
2889static void
1375loop_init (EV_P_ unsigned int flags) 2890loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
1376{ 2891{
1377 if (!backend) 2892 if (!backend)
1378 { 2893 {
2894 origflags = flags;
2895
1379#if EV_USE_REALTIME 2896#if EV_USE_REALTIME
1380 if (!have_realtime) 2897 if (!have_realtime)
1381 { 2898 {
1382 struct timespec ts; 2899 struct timespec ts;
1383 2900
… …
1394 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 2911 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1395 have_monotonic = 1; 2912 have_monotonic = 1;
1396 } 2913 }
1397#endif 2914#endif
1398 2915
1399 ev_rt_now = ev_time ();
1400 mn_now = get_clock ();
1401 now_floor = mn_now;
1402 rtmn_diff = ev_rt_now - mn_now;
1403
1404 io_blocktime = 0.;
1405 timeout_blocktime = 0.;
1406 backend = 0;
1407 backend_fd = -1;
1408 gotasync = 0;
1409#if EV_USE_INOTIFY
1410 fs_fd = -2;
1411#endif
1412
1413 /* pid check not overridable via env */ 2916 /* pid check not overridable via env */
1414#ifndef _WIN32 2917#ifndef _WIN32
1415 if (flags & EVFLAG_FORKCHECK) 2918 if (flags & EVFLAG_FORKCHECK)
1416 curpid = getpid (); 2919 curpid = getpid ();
1417#endif 2920#endif
… …
1419 if (!(flags & EVFLAG_NOENV) 2922 if (!(flags & EVFLAG_NOENV)
1420 && !enable_secure () 2923 && !enable_secure ()
1421 && getenv ("LIBEV_FLAGS")) 2924 && getenv ("LIBEV_FLAGS"))
1422 flags = atoi (getenv ("LIBEV_FLAGS")); 2925 flags = atoi (getenv ("LIBEV_FLAGS"));
1423 2926
1424 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))
1425 flags |= ev_recommended_backends (); 2955 flags |= ev_recommended_backends ();
1426 2956
2957#if EV_USE_IOCP
2958 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2959#endif
1427#if EV_USE_PORT 2960#if EV_USE_PORT
1428 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2961 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1429#endif 2962#endif
1430#if EV_USE_KQUEUE 2963#if EV_USE_KQUEUE
1431 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);
1432#endif 2968#endif
1433#if EV_USE_EPOLL 2969#if EV_USE_EPOLL
1434 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 2970 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
1435#endif 2971#endif
1436#if EV_USE_POLL 2972#if EV_USE_POLL
1437 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 2973 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
1438#endif 2974#endif
1439#if EV_USE_SELECT 2975#if EV_USE_SELECT
1440 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2976 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
1441#endif 2977#endif
1442 2978
1443 ev_prepare_init (&pending_w, pendingcb); 2979 ev_prepare_init (&pending_w, pendingcb);
1444 2980
2981#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1445 ev_init (&pipe_w, pipecb); 2982 ev_init (&pipe_w, pipecb);
1446 ev_set_priority (&pipe_w, EV_MAXPRI); 2983 ev_set_priority (&pipe_w, EV_MAXPRI);
2984#endif
1447 } 2985 }
1448} 2986}
1449 2987
1450/* free up a loop structure */ 2988/* free up a loop structure */
1451static void noinline 2989ecb_cold
2990void
1452loop_destroy (EV_P) 2991ev_loop_destroy (EV_P)
1453{ 2992{
1454 int i; 2993 int i;
1455 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
1456 if (ev_is_active (&pipe_w)) 3018 if (ev_is_active (&pipe_w))
1457 { 3019 {
1458 ev_ref (EV_A); /* signal watcher */ 3020 /*ev_ref (EV_A);*/
1459 ev_io_stop (EV_A_ &pipe_w); 3021 /*ev_io_stop (EV_A_ &pipe_w);*/
1460 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
1461#if EV_USE_EVENTFD 3027#if EV_USE_SIGNALFD
1462 if (evfd >= 0) 3028 if (ev_is_active (&sigfd_w))
1463 close (evfd); 3029 close (sigfd);
1464#endif 3030#endif
1465
1466 if (evpipe [0] >= 0)
1467 {
1468 close (evpipe [0]);
1469 close (evpipe [1]);
1470 }
1471 }
1472 3031
1473#if EV_USE_INOTIFY 3032#if EV_USE_INOTIFY
1474 if (fs_fd >= 0) 3033 if (fs_fd >= 0)
1475 close (fs_fd); 3034 close (fs_fd);
1476#endif 3035#endif
1477 3036
1478 if (backend_fd >= 0) 3037 if (backend_fd >= 0)
1479 close (backend_fd); 3038 close (backend_fd);
1480 3039
3040#if EV_USE_IOCP
3041 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
3042#endif
1481#if EV_USE_PORT 3043#if EV_USE_PORT
1482 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3044 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1483#endif 3045#endif
1484#if EV_USE_KQUEUE 3046#if EV_USE_KQUEUE
1485 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);
1486#endif 3051#endif
1487#if EV_USE_EPOLL 3052#if EV_USE_EPOLL
1488 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3053 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
1489#endif 3054#endif
1490#if EV_USE_POLL 3055#if EV_USE_POLL
1491 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3056 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
1492#endif 3057#endif
1493#if EV_USE_SELECT 3058#if EV_USE_SELECT
1494 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3059 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
1495#endif 3060#endif
1496 3061
1497 for (i = NUMPRI; i--; ) 3062 for (i = NUMPRI; i--; )
1498 { 3063 {
1499 array_free (pending, [i]); 3064 array_free (pending, [i]);
1500#if EV_IDLE_ENABLE 3065#if EV_IDLE_ENABLE
1501 array_free (idle, [i]); 3066 array_free (idle, [i]);
1502#endif 3067#endif
1503 } 3068 }
1504 3069
1505 ev_free (anfds); anfdmax = 0; 3070 ev_free (anfds); anfds = 0; anfdmax = 0;
1506 3071
1507 /* have to use the microsoft-never-gets-it-right macro */ 3072 /* have to use the microsoft-never-gets-it-right macro */
1508 array_free (rfeed, EMPTY); 3073 array_free (rfeed, EMPTY);
1509 array_free (fdchange, EMPTY); 3074 array_free (fdchange, EMPTY);
1510 array_free (timer, EMPTY); 3075 array_free (timer, EMPTY);
… …
1512 array_free (periodic, EMPTY); 3077 array_free (periodic, EMPTY);
1513#endif 3078#endif
1514#if EV_FORK_ENABLE 3079#if EV_FORK_ENABLE
1515 array_free (fork, EMPTY); 3080 array_free (fork, EMPTY);
1516#endif 3081#endif
3082#if EV_CLEANUP_ENABLE
3083 array_free (cleanup, EMPTY);
3084#endif
1517 array_free (prepare, EMPTY); 3085 array_free (prepare, EMPTY);
1518 array_free (check, EMPTY); 3086 array_free (check, EMPTY);
1519#if EV_ASYNC_ENABLE 3087#if EV_ASYNC_ENABLE
1520 array_free (async, EMPTY); 3088 array_free (async, EMPTY);
1521#endif 3089#endif
1522 3090
1523 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
1524} 3101}
1525 3102
1526#if EV_USE_INOTIFY 3103#if EV_USE_INOTIFY
1527inline_size void infy_fork (EV_P); 3104inline_size void infy_fork (EV_P);
1528#endif 3105#endif
1529 3106
1530inline_size void 3107inline_size void
1531loop_fork (EV_P) 3108loop_fork (EV_P)
1532{ 3109{
1533#if EV_USE_PORT 3110#if EV_USE_PORT
1534 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3111 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1535#endif 3112#endif
1536#if EV_USE_KQUEUE 3113#if EV_USE_KQUEUE
1537 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);
1538#endif 3118#endif
1539#if EV_USE_EPOLL 3119#if EV_USE_EPOLL
1540 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3120 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
1541#endif 3121#endif
1542#if EV_USE_INOTIFY 3122#if EV_USE_INOTIFY
1543 infy_fork (EV_A); 3123 infy_fork (EV_A);
1544#endif 3124#endif
1545 3125
3126#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1546 if (ev_is_active (&pipe_w)) 3127 if (ev_is_active (&pipe_w) && postfork != 2)
1547 { 3128 {
1548 /* this "locks" the handlers against writing to the pipe */ 3129 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1549 /* while we modify the fd vars */
1550 gotsig = 1;
1551#if EV_ASYNC_ENABLE
1552 gotasync = 1;
1553#endif
1554 3130
1555 ev_ref (EV_A); 3131 ev_ref (EV_A);
1556 ev_io_stop (EV_A_ &pipe_w); 3132 ev_io_stop (EV_A_ &pipe_w);
1557 3133
1558#if EV_USE_EVENTFD
1559 if (evfd >= 0)
1560 close (evfd);
1561#endif
1562
1563 if (evpipe [0] >= 0) 3134 if (evpipe [0] >= 0)
1564 { 3135 EV_WIN32_CLOSE_FD (evpipe [0]);
1565 close (evpipe [0]);
1566 close (evpipe [1]);
1567 }
1568 3136
1569 evpipe_init (EV_A); 3137 evpipe_init (EV_A);
1570 /* now iterate over everything, in case we missed something */ 3138 /* iterate over everything, in case we missed something before */
1571 pipecb (EV_A_ &pipe_w, EV_READ); 3139 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1572 } 3140 }
3141#endif
1573 3142
1574 postfork = 0; 3143 postfork = 0;
1575} 3144}
1576 3145
1577#if EV_MULTIPLICITY 3146#if EV_MULTIPLICITY
1578 3147
3148ecb_cold
1579struct ev_loop * 3149struct ev_loop *
1580ev_loop_new (unsigned int flags) 3150ev_loop_new (unsigned int flags) EV_NOEXCEPT
1581{ 3151{
1582 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));
1583 3153
1584 memset (loop, 0, sizeof (struct ev_loop)); 3154 memset (EV_A, 0, sizeof (struct ev_loop));
1585
1586 loop_init (EV_A_ flags); 3155 loop_init (EV_A_ flags);
1587 3156
1588 if (ev_backend (EV_A)) 3157 if (ev_backend (EV_A))
1589 return loop; 3158 return EV_A;
1590 3159
3160 ev_free (EV_A);
1591 return 0; 3161 return 0;
1592} 3162}
1593 3163
1594void 3164#endif /* multiplicity */
1595ev_loop_destroy (EV_P)
1596{
1597 loop_destroy (EV_A);
1598 ev_free (loop);
1599}
1600
1601void
1602ev_loop_fork (EV_P)
1603{
1604 postfork = 1; /* must be in line with ev_default_fork */
1605}
1606 3165
1607#if EV_VERIFY 3166#if EV_VERIFY
1608static void noinline 3167noinline ecb_cold
3168static void
1609verify_watcher (EV_P_ W w) 3169verify_watcher (EV_P_ W w)
1610{ 3170{
1611 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));
1612 3172
1613 if (w->pending) 3173 if (w->pending)
1614 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));
1615} 3175}
1616 3176
1617static void noinline 3177noinline ecb_cold
3178static void
1618verify_heap (EV_P_ ANHE *heap, int N) 3179verify_heap (EV_P_ ANHE *heap, int N)
1619{ 3180{
1620 int i; 3181 int i;
1621 3182
1622 for (i = HEAP0; i < N + HEAP0; ++i) 3183 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1627 3188
1628 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3189 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1629 } 3190 }
1630} 3191}
1631 3192
1632static void noinline 3193noinline ecb_cold
3194static void
1633array_verify (EV_P_ W *ws, int cnt) 3195array_verify (EV_P_ W *ws, int cnt)
1634{ 3196{
1635 while (cnt--) 3197 while (cnt--)
1636 { 3198 {
1637 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3199 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1638 verify_watcher (EV_A_ ws [cnt]); 3200 verify_watcher (EV_A_ ws [cnt]);
1639 } 3201 }
1640} 3202}
1641#endif 3203#endif
1642 3204
1643void 3205#if EV_FEATURE_API
1644ev_loop_verify (EV_P) 3206void ecb_cold
3207ev_verify (EV_P) EV_NOEXCEPT
1645{ 3208{
1646#if EV_VERIFY 3209#if EV_VERIFY
1647 int i; 3210 int i;
1648 WL w; 3211 WL w, w2;
1649 3212
1650 assert (activecnt >= -1); 3213 assert (activecnt >= -1);
1651 3214
1652 assert (fdchangemax >= fdchangecnt); 3215 assert (fdchangemax >= fdchangecnt);
1653 for (i = 0; i < fdchangecnt; ++i) 3216 for (i = 0; i < fdchangecnt; ++i)
1654 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3217 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1655 3218
1656 assert (anfdmax >= 0); 3219 assert (anfdmax >= 0);
1657 for (i = 0; i < anfdmax; ++i) 3220 for (i = 0; i < anfdmax; ++i)
3221 {
3222 int j = 0;
3223
1658 for (w = anfds [i].head; w; w = w->next) 3224 for (w = w2 = anfds [i].head; w; w = w->next)
1659 { 3225 {
1660 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
1661 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));
1662 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));
1663 } 3236 }
3237 }
1664 3238
1665 assert (timermax >= timercnt); 3239 assert (timermax >= timercnt);
1666 verify_heap (EV_A_ timers, timercnt); 3240 verify_heap (EV_A_ timers, timercnt);
1667 3241
1668#if EV_PERIODIC_ENABLE 3242#if EV_PERIODIC_ENABLE
… …
1683#if EV_FORK_ENABLE 3257#if EV_FORK_ENABLE
1684 assert (forkmax >= forkcnt); 3258 assert (forkmax >= forkcnt);
1685 array_verify (EV_A_ (W *)forks, forkcnt); 3259 array_verify (EV_A_ (W *)forks, forkcnt);
1686#endif 3260#endif
1687 3261
3262#if EV_CLEANUP_ENABLE
3263 assert (cleanupmax >= cleanupcnt);
3264 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
3265#endif
3266
1688#if EV_ASYNC_ENABLE 3267#if EV_ASYNC_ENABLE
1689 assert (asyncmax >= asynccnt); 3268 assert (asyncmax >= asynccnt);
1690 array_verify (EV_A_ (W *)asyncs, asynccnt); 3269 array_verify (EV_A_ (W *)asyncs, asynccnt);
1691#endif 3270#endif
1692 3271
3272#if EV_PREPARE_ENABLE
1693 assert (preparemax >= preparecnt); 3273 assert (preparemax >= preparecnt);
1694 array_verify (EV_A_ (W *)prepares, preparecnt); 3274 array_verify (EV_A_ (W *)prepares, preparecnt);
3275#endif
1695 3276
3277#if EV_CHECK_ENABLE
1696 assert (checkmax >= checkcnt); 3278 assert (checkmax >= checkcnt);
1697 array_verify (EV_A_ (W *)checks, checkcnt); 3279 array_verify (EV_A_ (W *)checks, checkcnt);
3280#endif
1698 3281
1699# if 0 3282# if 0
3283#if EV_CHILD_ENABLE
1700 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)
1701 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 3285 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
3286#endif
1702# endif 3287# endif
1703#endif 3288#endif
1704} 3289}
1705 3290#endif
1706#endif /* multiplicity */
1707 3291
1708#if EV_MULTIPLICITY 3292#if EV_MULTIPLICITY
3293ecb_cold
1709struct ev_loop * 3294struct ev_loop *
1710ev_default_loop_init (unsigned int flags)
1711#else 3295#else
1712int 3296int
3297#endif
1713ev_default_loop (unsigned int flags) 3298ev_default_loop (unsigned int flags) EV_NOEXCEPT
1714#endif
1715{ 3299{
1716 if (!ev_default_loop_ptr) 3300 if (!ev_default_loop_ptr)
1717 { 3301 {
1718#if EV_MULTIPLICITY 3302#if EV_MULTIPLICITY
1719 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 3303 EV_P = ev_default_loop_ptr = &default_loop_struct;
1720#else 3304#else
1721 ev_default_loop_ptr = 1; 3305 ev_default_loop_ptr = 1;
1722#endif 3306#endif
1723 3307
1724 loop_init (EV_A_ flags); 3308 loop_init (EV_A_ flags);
1725 3309
1726 if (ev_backend (EV_A)) 3310 if (ev_backend (EV_A))
1727 { 3311 {
1728#ifndef _WIN32 3312#if EV_CHILD_ENABLE
1729 ev_signal_init (&childev, childcb, SIGCHLD); 3313 ev_signal_init (&childev, childcb, SIGCHLD);
1730 ev_set_priority (&childev, EV_MAXPRI); 3314 ev_set_priority (&childev, EV_MAXPRI);
1731 ev_signal_start (EV_A_ &childev); 3315 ev_signal_start (EV_A_ &childev);
1732 ev_unref (EV_A); /* child watcher should not keep loop alive */ 3316 ev_unref (EV_A); /* child watcher should not keep loop alive */
1733#endif 3317#endif
… …
1738 3322
1739 return ev_default_loop_ptr; 3323 return ev_default_loop_ptr;
1740} 3324}
1741 3325
1742void 3326void
1743ev_default_destroy (void) 3327ev_loop_fork (EV_P) EV_NOEXCEPT
1744{ 3328{
1745#if EV_MULTIPLICITY 3329 postfork = 1;
1746 struct ev_loop *loop = ev_default_loop_ptr;
1747#endif
1748
1749 ev_default_loop_ptr = 0;
1750
1751#ifndef _WIN32
1752 ev_ref (EV_A); /* child watcher */
1753 ev_signal_stop (EV_A_ &childev);
1754#endif
1755
1756 loop_destroy (EV_A);
1757}
1758
1759void
1760ev_default_fork (void)
1761{
1762#if EV_MULTIPLICITY
1763 struct ev_loop *loop = ev_default_loop_ptr;
1764#endif
1765
1766 postfork = 1; /* must be in line with ev_loop_fork */
1767} 3330}
1768 3331
1769/*****************************************************************************/ 3332/*****************************************************************************/
1770 3333
1771void 3334void
1772ev_invoke (EV_P_ void *w, int revents) 3335ev_invoke (EV_P_ void *w, int revents)
1773{ 3336{
1774 EV_CB_INVOKE ((W)w, revents); 3337 EV_CB_INVOKE ((W)w, revents);
1775} 3338}
1776 3339
1777inline_speed void 3340unsigned int
1778call_pending (EV_P) 3341ev_pending_count (EV_P) EV_NOEXCEPT
1779{ 3342{
1780 int pri; 3343 int pri;
3344 unsigned int count = 0;
1781 3345
1782 for (pri = NUMPRI; pri--; ) 3346 for (pri = NUMPRI; pri--; )
3347 count += pendingcnt [pri];
3348
3349 return count;
3350}
3351
3352noinline
3353void
3354ev_invoke_pending (EV_P)
3355{
3356 pendingpri = NUMPRI;
3357
3358 do
3359 {
3360 --pendingpri;
3361
3362 /* pendingpri possibly gets modified in the inner loop */
1783 while (pendingcnt [pri]) 3363 while (pendingcnt [pendingpri])
1784 { 3364 {
1785 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3365 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
1786 3366
1787 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1788 /* ^ this is no longer true, as pending_w could be here */
1789
1790 p->w->pending = 0; 3367 p->w->pending = 0;
1791 EV_CB_INVOKE (p->w, p->events); 3368 EV_CB_INVOKE (p->w, p->events);
1792 EV_FREQUENT_CHECK; 3369 EV_FREQUENT_CHECK;
1793 } 3370 }
3371 }
3372 while (pendingpri);
1794} 3373}
1795 3374
1796#if EV_IDLE_ENABLE 3375#if EV_IDLE_ENABLE
1797/* make idle watchers pending. this handles the "call-idle */ 3376/* make idle watchers pending. this handles the "call-idle */
1798/* only when higher priorities are idle" logic */ 3377/* only when higher priorities are idle" logic */
… …
1850 EV_FREQUENT_CHECK; 3429 EV_FREQUENT_CHECK;
1851 feed_reverse (EV_A_ (W)w); 3430 feed_reverse (EV_A_ (W)w);
1852 } 3431 }
1853 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 3432 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1854 3433
1855 feed_reverse_done (EV_A_ EV_TIMEOUT); 3434 feed_reverse_done (EV_A_ EV_TIMER);
1856 } 3435 }
1857} 3436}
1858 3437
1859#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
1860/* make periodics pending */ 3465/* make periodics pending */
1861inline_size void 3466inline_size void
1862periodics_reify (EV_P) 3467periodics_reify (EV_P)
1863{ 3468{
1864 EV_FREQUENT_CHECK; 3469 EV_FREQUENT_CHECK;
1865 3470
1866 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3471 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1867 { 3472 {
1868 int feed_count = 0;
1869
1870 do 3473 do
1871 { 3474 {
1872 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3475 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
1873 3476
1874 /*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)));*/
… …
1883 ANHE_at_cache (periodics [HEAP0]); 3486 ANHE_at_cache (periodics [HEAP0]);
1884 downheap (periodics, periodiccnt, HEAP0); 3487 downheap (periodics, periodiccnt, HEAP0);
1885 } 3488 }
1886 else if (w->interval) 3489 else if (w->interval)
1887 { 3490 {
1888 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3491 periodic_recalc (EV_A_ w);
1889 /* if next trigger time is not sufficiently in the future, put it there */
1890 /* this might happen because of floating point inexactness */
1891 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1892 {
1893 ev_at (w) += w->interval;
1894
1895 /* if interval is unreasonably low we might still have a time in the past */
1896 /* so correct this. this will make the periodic very inexact, but the user */
1897 /* has effectively asked to get triggered more often than possible */
1898 if (ev_at (w) < ev_rt_now)
1899 ev_at (w) = ev_rt_now;
1900 }
1901
1902 ANHE_at_cache (periodics [HEAP0]); 3492 ANHE_at_cache (periodics [HEAP0]);
1903 downheap (periodics, periodiccnt, HEAP0); 3493 downheap (periodics, periodiccnt, HEAP0);
1904 } 3494 }
1905 else 3495 else
1906 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3496 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
1913 feed_reverse_done (EV_A_ EV_PERIODIC); 3503 feed_reverse_done (EV_A_ EV_PERIODIC);
1914 } 3504 }
1915} 3505}
1916 3506
1917/* simply recalculate all periodics */ 3507/* simply recalculate all periodics */
1918/* 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? */
1919static void noinline 3509noinline ecb_cold
3510static void
1920periodics_reschedule (EV_P) 3511periodics_reschedule (EV_P)
1921{ 3512{
1922 int i; 3513 int i;
1923 3514
1924 /* adjust periodics after time jump */ 3515 /* adjust periodics after time jump */
… …
1927 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3518 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1928 3519
1929 if (w->reschedule_cb) 3520 if (w->reschedule_cb)
1930 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3521 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1931 else if (w->interval) 3522 else if (w->interval)
1932 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3523 periodic_recalc (EV_A_ w);
1933 3524
1934 ANHE_at_cache (periodics [i]); 3525 ANHE_at_cache (periodics [i]);
1935 } 3526 }
1936 3527
1937 reheap (periodics, periodiccnt); 3528 reheap (periodics, periodiccnt);
1938} 3529}
1939#endif 3530#endif
1940 3531
1941/* adjust all timers by a given offset */ 3532/* adjust all timers by a given offset */
1942static void noinline 3533noinline ecb_cold
3534static void
1943timers_reschedule (EV_P_ ev_tstamp adjust) 3535timers_reschedule (EV_P_ ev_tstamp adjust)
1944{ 3536{
1945 int i; 3537 int i;
1946 3538
1947 for (i = 0; i < timercnt; ++i) 3539 for (i = 0; i < timercnt; ++i)
… …
1951 ANHE_at_cache (*he); 3543 ANHE_at_cache (*he);
1952 } 3544 }
1953} 3545}
1954 3546
1955/* fetch new monotonic and realtime times from the kernel */ 3547/* fetch new monotonic and realtime times from the kernel */
1956/* also detetc if there was a timejump, and act accordingly */ 3548/* also detect if there was a timejump, and act accordingly */
1957inline_speed void 3549inline_speed void
1958time_update (EV_P_ ev_tstamp max_block) 3550time_update (EV_P_ ev_tstamp max_block)
1959{ 3551{
1960#if EV_USE_MONOTONIC 3552#if EV_USE_MONOTONIC
1961 if (expect_true (have_monotonic)) 3553 if (expect_true (have_monotonic))
… …
1984 * 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
1985 * in the unlikely event of having been preempted here. 3577 * in the unlikely event of having been preempted here.
1986 */ 3578 */
1987 for (i = 4; --i; ) 3579 for (i = 4; --i; )
1988 { 3580 {
3581 ev_tstamp diff;
1989 rtmn_diff = ev_rt_now - mn_now; 3582 rtmn_diff = ev_rt_now - mn_now;
1990 3583
3584 diff = odiff - rtmn_diff;
3585
1991 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3586 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
1992 return; /* all is well */ 3587 return; /* all is well */
1993 3588
1994 ev_rt_now = ev_time (); 3589 ev_rt_now = ev_time ();
1995 mn_now = get_clock (); 3590 mn_now = get_clock ();
1996 now_floor = mn_now; 3591 now_floor = mn_now;
… …
2018 3613
2019 mn_now = ev_rt_now; 3614 mn_now = ev_rt_now;
2020 } 3615 }
2021} 3616}
2022 3617
2023static int loop_done; 3618int
2024
2025void
2026ev_loop (EV_P_ int flags) 3619ev_run (EV_P_ int flags)
2027{ 3620{
3621#if EV_FEATURE_API
3622 ++loop_depth;
3623#endif
3624
3625 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
3626
2028 loop_done = EVUNLOOP_CANCEL; 3627 loop_done = EVBREAK_CANCEL;
2029 3628
2030 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 3629 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2031 3630
2032 do 3631 do
2033 { 3632 {
2034#if EV_VERIFY >= 2 3633#if EV_VERIFY >= 2
2035 ev_loop_verify (EV_A); 3634 ev_verify (EV_A);
2036#endif 3635#endif
2037 3636
2038#ifndef _WIN32 3637#ifndef _WIN32
2039 if (expect_false (curpid)) /* penalise the forking check even more */ 3638 if (expect_false (curpid)) /* penalise the forking check even more */
2040 if (expect_false (getpid () != curpid)) 3639 if (expect_false (getpid () != curpid))
… …
2048 /* we might have forked, so queue fork handlers */ 3647 /* we might have forked, so queue fork handlers */
2049 if (expect_false (postfork)) 3648 if (expect_false (postfork))
2050 if (forkcnt) 3649 if (forkcnt)
2051 { 3650 {
2052 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3651 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2053 call_pending (EV_A); 3652 EV_INVOKE_PENDING;
2054 } 3653 }
2055#endif 3654#endif
2056 3655
3656#if EV_PREPARE_ENABLE
2057 /* queue prepare watchers (and execute them) */ 3657 /* queue prepare watchers (and execute them) */
2058 if (expect_false (preparecnt)) 3658 if (expect_false (preparecnt))
2059 { 3659 {
2060 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3660 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2061 call_pending (EV_A); 3661 EV_INVOKE_PENDING;
2062 } 3662 }
3663#endif
3664
3665 if (expect_false (loop_done))
3666 break;
2063 3667
2064 /* we might have forked, so reify kernel state if necessary */ 3668 /* we might have forked, so reify kernel state if necessary */
2065 if (expect_false (postfork)) 3669 if (expect_false (postfork))
2066 loop_fork (EV_A); 3670 loop_fork (EV_A);
2067 3671
… …
2071 /* calculate blocking time */ 3675 /* calculate blocking time */
2072 { 3676 {
2073 ev_tstamp waittime = 0.; 3677 ev_tstamp waittime = 0.;
2074 ev_tstamp sleeptime = 0.; 3678 ev_tstamp sleeptime = 0.;
2075 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
2076 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3691 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2077 { 3692 {
2078 /* update time to cancel out callback processing overhead */
2079 time_update (EV_A_ 1e100);
2080
2081 waittime = MAX_BLOCKTIME; 3693 waittime = MAX_BLOCKTIME;
2082 3694
2083 if (timercnt) 3695 if (timercnt)
2084 { 3696 {
2085 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3697 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2086 if (waittime > to) waittime = to; 3698 if (waittime > to) waittime = to;
2087 } 3699 }
2088 3700
2089#if EV_PERIODIC_ENABLE 3701#if EV_PERIODIC_ENABLE
2090 if (periodiccnt) 3702 if (periodiccnt)
2091 { 3703 {
2092 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3704 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2093 if (waittime > to) waittime = to; 3705 if (waittime > to) waittime = to;
2094 } 3706 }
2095#endif 3707#endif
2096 3708
3709 /* don't let timeouts decrease the waittime below timeout_blocktime */
2097 if (expect_false (waittime < timeout_blocktime)) 3710 if (expect_false (waittime < timeout_blocktime))
2098 waittime = timeout_blocktime; 3711 waittime = timeout_blocktime;
2099 3712
2100 sleeptime = waittime - backend_fudge; 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;
2101 3717
3718 /* extra check because io_blocktime is commonly 0 */
2102 if (expect_true (sleeptime > io_blocktime)) 3719 if (expect_false (io_blocktime))
2103 sleeptime = io_blocktime;
2104
2105 if (sleeptime)
2106 { 3720 {
3721 sleeptime = io_blocktime - (mn_now - prev_mn_now);
3722
3723 if (sleeptime > waittime - backend_mintime)
3724 sleeptime = waittime - backend_mintime;
3725
3726 if (expect_true (sleeptime > 0.))
3727 {
2107 ev_sleep (sleeptime); 3728 ev_sleep (sleeptime);
2108 waittime -= sleeptime; 3729 waittime -= sleeptime;
3730 }
2109 } 3731 }
2110 } 3732 }
2111 3733
3734#if EV_FEATURE_API
2112 ++loop_count; 3735 ++loop_count;
3736#endif
3737 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2113 backend_poll (EV_A_ waittime); 3738 backend_poll (EV_A_ waittime);
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
2114 3750
2115 /* update ev_rt_now, do magic */ 3751 /* update ev_rt_now, do magic */
2116 time_update (EV_A_ waittime + sleeptime); 3752 time_update (EV_A_ waittime + sleeptime);
2117 } 3753 }
2118 3754
… …
2125#if EV_IDLE_ENABLE 3761#if EV_IDLE_ENABLE
2126 /* queue idle watchers unless other events are pending */ 3762 /* queue idle watchers unless other events are pending */
2127 idle_reify (EV_A); 3763 idle_reify (EV_A);
2128#endif 3764#endif
2129 3765
3766#if EV_CHECK_ENABLE
2130 /* queue check watchers, to be executed first */ 3767 /* queue check watchers, to be executed first */
2131 if (expect_false (checkcnt)) 3768 if (expect_false (checkcnt))
2132 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3769 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3770#endif
2133 3771
2134 call_pending (EV_A); 3772 EV_INVOKE_PENDING;
2135 } 3773 }
2136 while (expect_true ( 3774 while (expect_true (
2137 activecnt 3775 activecnt
2138 && !loop_done 3776 && !loop_done
2139 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3777 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2140 )); 3778 ));
2141 3779
2142 if (loop_done == EVUNLOOP_ONE) 3780 if (loop_done == EVBREAK_ONE)
2143 loop_done = EVUNLOOP_CANCEL; 3781 loop_done = EVBREAK_CANCEL;
2144}
2145 3782
3783#if EV_FEATURE_API
3784 --loop_depth;
3785#endif
3786
3787 return activecnt;
3788}
3789
2146void 3790void
2147ev_unloop (EV_P_ int how) 3791ev_break (EV_P_ int how) EV_NOEXCEPT
2148{ 3792{
2149 loop_done = how; 3793 loop_done = how;
2150} 3794}
2151 3795
2152void 3796void
2153ev_ref (EV_P) 3797ev_ref (EV_P) EV_NOEXCEPT
2154{ 3798{
2155 ++activecnt; 3799 ++activecnt;
2156} 3800}
2157 3801
2158void 3802void
2159ev_unref (EV_P) 3803ev_unref (EV_P) EV_NOEXCEPT
2160{ 3804{
2161 --activecnt; 3805 --activecnt;
2162} 3806}
2163 3807
2164void 3808void
2165ev_now_update (EV_P) 3809ev_now_update (EV_P) EV_NOEXCEPT
2166{ 3810{
2167 time_update (EV_A_ 1e100); 3811 time_update (EV_A_ 1e100);
2168} 3812}
2169 3813
2170void 3814void
2171ev_suspend (EV_P) 3815ev_suspend (EV_P) EV_NOEXCEPT
2172{ 3816{
2173 ev_now_update (EV_A); 3817 ev_now_update (EV_A);
2174} 3818}
2175 3819
2176void 3820void
2177ev_resume (EV_P) 3821ev_resume (EV_P) EV_NOEXCEPT
2178{ 3822{
2179 ev_tstamp mn_prev = mn_now; 3823 ev_tstamp mn_prev = mn_now;
2180 3824
2181 ev_now_update (EV_A); 3825 ev_now_update (EV_A);
2182 timers_reschedule (EV_A_ mn_now - mn_prev); 3826 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2199inline_size void 3843inline_size void
2200wlist_del (WL *head, WL elem) 3844wlist_del (WL *head, WL elem)
2201{ 3845{
2202 while (*head) 3846 while (*head)
2203 { 3847 {
2204 if (*head == elem) 3848 if (expect_true (*head == elem))
2205 { 3849 {
2206 *head = elem->next; 3850 *head = elem->next;
2207 return; 3851 break;
2208 } 3852 }
2209 3853
2210 head = &(*head)->next; 3854 head = &(*head)->next;
2211 } 3855 }
2212} 3856}
… …
2221 w->pending = 0; 3865 w->pending = 0;
2222 } 3866 }
2223} 3867}
2224 3868
2225int 3869int
2226ev_clear_pending (EV_P_ void *w) 3870ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
2227{ 3871{
2228 W w_ = (W)w; 3872 W w_ = (W)w;
2229 int pending = w_->pending; 3873 int pending = w_->pending;
2230 3874
2231 if (expect_true (pending)) 3875 if (expect_true (pending))
… …
2240} 3884}
2241 3885
2242inline_size void 3886inline_size void
2243pri_adjust (EV_P_ W w) 3887pri_adjust (EV_P_ W w)
2244{ 3888{
2245 int pri = w->priority; 3889 int pri = ev_priority (w);
2246 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 3890 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2247 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 3891 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2248 w->priority = pri; 3892 ev_set_priority (w, pri);
2249} 3893}
2250 3894
2251inline_speed void 3895inline_speed void
2252ev_start (EV_P_ W w, int active) 3896ev_start (EV_P_ W w, int active)
2253{ 3897{
… …
2263 w->active = 0; 3907 w->active = 0;
2264} 3908}
2265 3909
2266/*****************************************************************************/ 3910/*****************************************************************************/
2267 3911
2268void noinline 3912noinline
3913void
2269ev_io_start (EV_P_ ev_io *w) 3914ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
2270{ 3915{
2271 int fd = w->fd; 3916 int fd = w->fd;
2272 3917
2273 if (expect_false (ev_is_active (w))) 3918 if (expect_false (ev_is_active (w)))
2274 return; 3919 return;
2275 3920
2276 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 3921 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2277 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))));
2278 3923
2279 EV_FREQUENT_CHECK; 3924 EV_FREQUENT_CHECK;
2280 3925
2281 ev_start (EV_A_ (W)w, 1); 3926 ev_start (EV_A_ (W)w, 1);
2282 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3927 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
2283 wlist_add (&anfds[fd].head, (WL)w); 3928 wlist_add (&anfds[fd].head, (WL)w);
2284 3929
3930 /* common bug, apparently */
3931 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3932
2285 fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1); 3933 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2286 w->events &= ~EV__IOFDSET; 3934 w->events &= ~EV__IOFDSET;
2287 3935
2288 EV_FREQUENT_CHECK; 3936 EV_FREQUENT_CHECK;
2289} 3937}
2290 3938
2291void noinline 3939noinline
3940void
2292ev_io_stop (EV_P_ ev_io *w) 3941ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
2293{ 3942{
2294 clear_pending (EV_A_ (W)w); 3943 clear_pending (EV_A_ (W)w);
2295 if (expect_false (!ev_is_active (w))) 3944 if (expect_false (!ev_is_active (w)))
2296 return; 3945 return;
2297 3946
… …
2300 EV_FREQUENT_CHECK; 3949 EV_FREQUENT_CHECK;
2301 3950
2302 wlist_del (&anfds[w->fd].head, (WL)w); 3951 wlist_del (&anfds[w->fd].head, (WL)w);
2303 ev_stop (EV_A_ (W)w); 3952 ev_stop (EV_A_ (W)w);
2304 3953
2305 fd_change (EV_A_ w->fd, 1); 3954 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2306 3955
2307 EV_FREQUENT_CHECK; 3956 EV_FREQUENT_CHECK;
2308} 3957}
2309 3958
2310void noinline 3959noinline
3960void
2311ev_timer_start (EV_P_ ev_timer *w) 3961ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
2312{ 3962{
2313 if (expect_false (ev_is_active (w))) 3963 if (expect_false (ev_is_active (w)))
2314 return; 3964 return;
2315 3965
2316 ev_at (w) += mn_now; 3966 ev_at (w) += mn_now;
… …
2319 3969
2320 EV_FREQUENT_CHECK; 3970 EV_FREQUENT_CHECK;
2321 3971
2322 ++timercnt; 3972 ++timercnt;
2323 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 3973 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
2324 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 3974 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
2325 ANHE_w (timers [ev_active (w)]) = (WT)w; 3975 ANHE_w (timers [ev_active (w)]) = (WT)w;
2326 ANHE_at_cache (timers [ev_active (w)]); 3976 ANHE_at_cache (timers [ev_active (w)]);
2327 upheap (timers, ev_active (w)); 3977 upheap (timers, ev_active (w));
2328 3978
2329 EV_FREQUENT_CHECK; 3979 EV_FREQUENT_CHECK;
2330 3980
2331 /*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));*/
2332} 3982}
2333 3983
2334void noinline 3984noinline
3985void
2335ev_timer_stop (EV_P_ ev_timer *w) 3986ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
2336{ 3987{
2337 clear_pending (EV_A_ (W)w); 3988 clear_pending (EV_A_ (W)w);
2338 if (expect_false (!ev_is_active (w))) 3989 if (expect_false (!ev_is_active (w)))
2339 return; 3990 return;
2340 3991
… …
2352 timers [active] = timers [timercnt + HEAP0]; 4003 timers [active] = timers [timercnt + HEAP0];
2353 adjustheap (timers, timercnt, active); 4004 adjustheap (timers, timercnt, active);
2354 } 4005 }
2355 } 4006 }
2356 4007
2357 EV_FREQUENT_CHECK;
2358
2359 ev_at (w) -= mn_now; 4008 ev_at (w) -= mn_now;
2360 4009
2361 ev_stop (EV_A_ (W)w); 4010 ev_stop (EV_A_ (W)w);
2362}
2363 4011
4012 EV_FREQUENT_CHECK;
4013}
4014
2364void noinline 4015noinline
4016void
2365ev_timer_again (EV_P_ ev_timer *w) 4017ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
2366{ 4018{
2367 EV_FREQUENT_CHECK; 4019 EV_FREQUENT_CHECK;
4020
4021 clear_pending (EV_A_ (W)w);
2368 4022
2369 if (ev_is_active (w)) 4023 if (ev_is_active (w))
2370 { 4024 {
2371 if (w->repeat) 4025 if (w->repeat)
2372 { 4026 {
… …
2384 } 4038 }
2385 4039
2386 EV_FREQUENT_CHECK; 4040 EV_FREQUENT_CHECK;
2387} 4041}
2388 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
2389#if EV_PERIODIC_ENABLE 4049#if EV_PERIODIC_ENABLE
2390void noinline 4050noinline
4051void
2391ev_periodic_start (EV_P_ ev_periodic *w) 4052ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
2392{ 4053{
2393 if (expect_false (ev_is_active (w))) 4054 if (expect_false (ev_is_active (w)))
2394 return; 4055 return;
2395 4056
2396 if (w->reschedule_cb) 4057 if (w->reschedule_cb)
2397 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4058 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2398 else if (w->interval) 4059 else if (w->interval)
2399 { 4060 {
2400 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.));
2401 /* this formula differs from the one in periodic_reify because we do not always round up */ 4062 periodic_recalc (EV_A_ w);
2402 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2403 } 4063 }
2404 else 4064 else
2405 ev_at (w) = w->offset; 4065 ev_at (w) = w->offset;
2406 4066
2407 EV_FREQUENT_CHECK; 4067 EV_FREQUENT_CHECK;
2408 4068
2409 ++periodiccnt; 4069 ++periodiccnt;
2410 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4070 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2411 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4071 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
2412 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4072 ANHE_w (periodics [ev_active (w)]) = (WT)w;
2413 ANHE_at_cache (periodics [ev_active (w)]); 4073 ANHE_at_cache (periodics [ev_active (w)]);
2414 upheap (periodics, ev_active (w)); 4074 upheap (periodics, ev_active (w));
2415 4075
2416 EV_FREQUENT_CHECK; 4076 EV_FREQUENT_CHECK;
2417 4077
2418 /*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));*/
2419} 4079}
2420 4080
2421void noinline 4081noinline
4082void
2422ev_periodic_stop (EV_P_ ev_periodic *w) 4083ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
2423{ 4084{
2424 clear_pending (EV_A_ (W)w); 4085 clear_pending (EV_A_ (W)w);
2425 if (expect_false (!ev_is_active (w))) 4086 if (expect_false (!ev_is_active (w)))
2426 return; 4087 return;
2427 4088
… …
2439 periodics [active] = periodics [periodiccnt + HEAP0]; 4100 periodics [active] = periodics [periodiccnt + HEAP0];
2440 adjustheap (periodics, periodiccnt, active); 4101 adjustheap (periodics, periodiccnt, active);
2441 } 4102 }
2442 } 4103 }
2443 4104
2444 EV_FREQUENT_CHECK;
2445
2446 ev_stop (EV_A_ (W)w); 4105 ev_stop (EV_A_ (W)w);
2447}
2448 4106
4107 EV_FREQUENT_CHECK;
4108}
4109
2449void noinline 4110noinline
4111void
2450ev_periodic_again (EV_P_ ev_periodic *w) 4112ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
2451{ 4113{
2452 /* TODO: use adjustheap and recalculation */ 4114 /* TODO: use adjustheap and recalculation */
2453 ev_periodic_stop (EV_A_ w); 4115 ev_periodic_stop (EV_A_ w);
2454 ev_periodic_start (EV_A_ w); 4116 ev_periodic_start (EV_A_ w);
2455} 4117}
… …
2457 4119
2458#ifndef SA_RESTART 4120#ifndef SA_RESTART
2459# define SA_RESTART 0 4121# define SA_RESTART 0
2460#endif 4122#endif
2461 4123
4124#if EV_SIGNAL_ENABLE
4125
2462void noinline 4126noinline
4127void
2463ev_signal_start (EV_P_ ev_signal *w) 4128ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
2464{ 4129{
2465#if EV_MULTIPLICITY
2466 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2467#endif
2468 if (expect_false (ev_is_active (w))) 4130 if (expect_false (ev_is_active (w)))
2469 return; 4131 return;
2470 4132
2471 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));
2472 4134
2473 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));
2474 4138
2475 EV_FREQUENT_CHECK; 4139 signals [w->signum - 1].loop = EV_A;
4140 ECB_MEMORY_FENCE_RELEASE;
4141#endif
2476 4142
4143 EV_FREQUENT_CHECK;
4144
4145#if EV_USE_SIGNALFD
4146 if (sigfd == -2)
2477 { 4147 {
2478#ifndef _WIN32 4148 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2479 sigset_t full, prev; 4149 if (sigfd < 0 && errno == EINVAL)
2480 sigfillset (&full); 4150 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2481 sigprocmask (SIG_SETMASK, &full, &prev);
2482#endif
2483 4151
2484 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 */
2485 4155
2486#ifndef _WIN32 4156 sigemptyset (&sigfd_set);
2487 sigprocmask (SIG_SETMASK, &prev, 0); 4157
2488#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 }
2489 } 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
2490 4174
2491 ev_start (EV_A_ (W)w, 1); 4175 ev_start (EV_A_ (W)w, 1);
2492 wlist_add (&signals [w->signum - 1].head, (WL)w); 4176 wlist_add (&signals [w->signum - 1].head, (WL)w);
2493 4177
2494 if (!((WL)w)->next) 4178 if (!((WL)w)->next)
4179# if EV_USE_SIGNALFD
4180 if (sigfd < 0) /*TODO*/
4181# endif
2495 { 4182 {
2496#if _WIN32 4183# ifdef _WIN32
4184 evpipe_init (EV_A);
4185
2497 signal (w->signum, ev_sighandler); 4186 signal (w->signum, ev_sighandler);
2498#else 4187# else
2499 struct sigaction sa; 4188 struct sigaction sa;
4189
4190 evpipe_init (EV_A);
4191
2500 sa.sa_handler = ev_sighandler; 4192 sa.sa_handler = ev_sighandler;
2501 sigfillset (&sa.sa_mask); 4193 sigfillset (&sa.sa_mask);
2502 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 */
2503 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 }
2504#endif 4203#endif
2505 } 4204 }
2506 4205
2507 EV_FREQUENT_CHECK; 4206 EV_FREQUENT_CHECK;
2508} 4207}
2509 4208
2510void noinline 4209noinline
4210void
2511ev_signal_stop (EV_P_ ev_signal *w) 4211ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
2512{ 4212{
2513 clear_pending (EV_A_ (W)w); 4213 clear_pending (EV_A_ (W)w);
2514 if (expect_false (!ev_is_active (w))) 4214 if (expect_false (!ev_is_active (w)))
2515 return; 4215 return;
2516 4216
… …
2518 4218
2519 wlist_del (&signals [w->signum - 1].head, (WL)w); 4219 wlist_del (&signals [w->signum - 1].head, (WL)w);
2520 ev_stop (EV_A_ (W)w); 4220 ev_stop (EV_A_ (W)w);
2521 4221
2522 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
2523 signal (w->signum, SIG_DFL); 4241 signal (w->signum, SIG_DFL);
4242 }
2524 4243
2525 EV_FREQUENT_CHECK; 4244 EV_FREQUENT_CHECK;
2526} 4245}
2527 4246
4247#endif
4248
4249#if EV_CHILD_ENABLE
4250
2528void 4251void
2529ev_child_start (EV_P_ ev_child *w) 4252ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
2530{ 4253{
2531#if EV_MULTIPLICITY 4254#if EV_MULTIPLICITY
2532 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));
2533#endif 4256#endif
2534 if (expect_false (ev_is_active (w))) 4257 if (expect_false (ev_is_active (w)))
2535 return; 4258 return;
2536 4259
2537 EV_FREQUENT_CHECK; 4260 EV_FREQUENT_CHECK;
2538 4261
2539 ev_start (EV_A_ (W)w, 1); 4262 ev_start (EV_A_ (W)w, 1);
2540 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4263 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2541 4264
2542 EV_FREQUENT_CHECK; 4265 EV_FREQUENT_CHECK;
2543} 4266}
2544 4267
2545void 4268void
2546ev_child_stop (EV_P_ ev_child *w) 4269ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
2547{ 4270{
2548 clear_pending (EV_A_ (W)w); 4271 clear_pending (EV_A_ (W)w);
2549 if (expect_false (!ev_is_active (w))) 4272 if (expect_false (!ev_is_active (w)))
2550 return; 4273 return;
2551 4274
2552 EV_FREQUENT_CHECK; 4275 EV_FREQUENT_CHECK;
2553 4276
2554 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4277 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2555 ev_stop (EV_A_ (W)w); 4278 ev_stop (EV_A_ (W)w);
2556 4279
2557 EV_FREQUENT_CHECK; 4280 EV_FREQUENT_CHECK;
2558} 4281}
4282
4283#endif
2559 4284
2560#if EV_STAT_ENABLE 4285#if EV_STAT_ENABLE
2561 4286
2562# ifdef _WIN32 4287# ifdef _WIN32
2563# undef lstat 4288# undef lstat
… …
2566 4291
2567#define DEF_STAT_INTERVAL 5.0074891 4292#define DEF_STAT_INTERVAL 5.0074891
2568#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4293#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2569#define MIN_STAT_INTERVAL 0.1074891 4294#define MIN_STAT_INTERVAL 0.1074891
2570 4295
2571static 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);
2572 4297
2573#if EV_USE_INOTIFY 4298#if EV_USE_INOTIFY
2574# define EV_INOTIFY_BUFSIZE 8192
2575 4299
2576static 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
2577infy_add (EV_P_ ev_stat *w) 4305infy_add (EV_P_ ev_stat *w)
2578{ 4306{
2579 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);
2580 4311
2581 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 */
2582 { 4338 }
4339 else
4340 {
4341 /* can't use inotify, continue to stat */
2583 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4342 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2584 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2585 4343
2586 /* monitor some parent directory for speedup hints */ 4344 /* if path is not there, monitor some parent directory for speedup hints */
2587 /* 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, */
2588 /* but an efficiency issue only */ 4346 /* but an efficiency issue only */
2589 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 4347 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2590 { 4348 {
2591 char path [4096]; 4349 char path [4096];
… …
2601 if (!pend || pend == path) 4359 if (!pend || pend == path)
2602 break; 4360 break;
2603 4361
2604 *pend = 0; 4362 *pend = 0;
2605 w->wd = inotify_add_watch (fs_fd, path, mask); 4363 w->wd = inotify_add_watch (fs_fd, path, mask);
2606 } 4364 }
2607 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 4365 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2608 } 4366 }
2609 } 4367 }
2610 4368
2611 if (w->wd >= 0) 4369 if (w->wd >= 0)
2612 {
2613 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);
2614 4371
2615 /* now local changes will be tracked by inotify, but remote changes won't */ 4372 /* now re-arm timer, if required */
2616 /* unless the filesystem it known to be local, we therefore still poll */ 4373 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2617 /* also do poll on <2.6.25, but with normal frequency */
2618 struct statfs sfs;
2619
2620 if (fs_2625 && !statfs (w->path, &sfs))
2621 if (sfs.f_type == 0x1373 /* devfs */
2622 || sfs.f_type == 0xEF53 /* ext2/3 */
2623 || sfs.f_type == 0x3153464a /* jfs */
2624 || sfs.f_type == 0x52654973 /* reiser3 */
2625 || sfs.f_type == 0x01021994 /* tempfs */
2626 || sfs.f_type == 0x58465342 /* xfs */)
2627 return;
2628
2629 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2630 ev_timer_again (EV_A_ &w->timer); 4374 ev_timer_again (EV_A_ &w->timer);
2631 } 4375 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2632} 4376}
2633 4377
2634static void noinline 4378noinline
4379static void
2635infy_del (EV_P_ ev_stat *w) 4380infy_del (EV_P_ ev_stat *w)
2636{ 4381{
2637 int slot; 4382 int slot;
2638 int wd = w->wd; 4383 int wd = w->wd;
2639 4384
2640 if (wd < 0) 4385 if (wd < 0)
2641 return; 4386 return;
2642 4387
2643 w->wd = -2; 4388 w->wd = -2;
2644 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 4389 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2645 wlist_del (&fs_hash [slot].head, (WL)w); 4390 wlist_del (&fs_hash [slot].head, (WL)w);
2646 4391
2647 /* remove this watcher, if others are watching it, they will rearm */ 4392 /* remove this watcher, if others are watching it, they will rearm */
2648 inotify_rm_watch (fs_fd, wd); 4393 inotify_rm_watch (fs_fd, wd);
2649} 4394}
2650 4395
2651static void noinline 4396noinline
4397static void
2652infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4398infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2653{ 4399{
2654 if (slot < 0) 4400 if (slot < 0)
2655 /* overflow, need to check for all hash slots */ 4401 /* overflow, need to check for all hash slots */
2656 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4402 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2657 infy_wd (EV_A_ slot, wd, ev); 4403 infy_wd (EV_A_ slot, wd, ev);
2658 else 4404 else
2659 { 4405 {
2660 WL w_; 4406 WL w_;
2661 4407
2662 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 4408 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2663 { 4409 {
2664 ev_stat *w = (ev_stat *)w_; 4410 ev_stat *w = (ev_stat *)w_;
2665 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 */
2666 4412
2667 if (w->wd == wd || wd == -1) 4413 if (w->wd == wd || wd == -1)
2668 { 4414 {
2669 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 4415 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2670 { 4416 {
2671 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);
2672 w->wd = -1; 4418 w->wd = -1;
2673 infy_add (EV_A_ w); /* re-add, no matter what */ 4419 infy_add (EV_A_ w); /* re-add, no matter what */
2674 } 4420 }
2675 4421
2676 stat_timer_cb (EV_A_ &w->timer, 0); 4422 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2681 4427
2682static void 4428static void
2683infy_cb (EV_P_ ev_io *w, int revents) 4429infy_cb (EV_P_ ev_io *w, int revents)
2684{ 4430{
2685 char buf [EV_INOTIFY_BUFSIZE]; 4431 char buf [EV_INOTIFY_BUFSIZE];
2686 struct inotify_event *ev = (struct inotify_event *)buf;
2687 int ofs; 4432 int ofs;
2688 int len = read (fs_fd, buf, sizeof (buf)); 4433 int len = read (fs_fd, buf, sizeof (buf));
2689 4434
2690 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);
2691 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 }
2692} 4441}
2693 4442
2694inline_size void 4443inline_size ecb_cold
4444void
2695check_2625 (EV_P) 4445ev_check_2625 (EV_P)
2696{ 4446{
2697 /* kernels < 2.6.25 are borked 4447 /* kernels < 2.6.25 are borked
2698 * 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
2699 */ 4449 */
2700 struct utsname buf; 4450 if (ev_linux_version () < 0x020619)
2701 int major, minor, micro;
2702
2703 if (uname (&buf))
2704 return; 4451 return;
2705 4452
2706 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2707 return;
2708
2709 if (major < 2
2710 || (major == 2 && minor < 6)
2711 || (major == 2 && minor == 6 && micro < 25))
2712 return;
2713
2714 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 ();
2715} 4465}
2716 4466
2717inline_size void 4467inline_size void
2718infy_init (EV_P) 4468infy_init (EV_P)
2719{ 4469{
2720 if (fs_fd != -2) 4470 if (fs_fd != -2)
2721 return; 4471 return;
2722 4472
2723 fs_fd = -1; 4473 fs_fd = -1;
2724 4474
2725 check_2625 (EV_A); 4475 ev_check_2625 (EV_A);
2726 4476
2727 fs_fd = inotify_init (); 4477 fs_fd = infy_newfd ();
2728 4478
2729 if (fs_fd >= 0) 4479 if (fs_fd >= 0)
2730 { 4480 {
4481 fd_intern (fs_fd);
2731 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 4482 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2732 ev_set_priority (&fs_w, EV_MAXPRI); 4483 ev_set_priority (&fs_w, EV_MAXPRI);
2733 ev_io_start (EV_A_ &fs_w); 4484 ev_io_start (EV_A_ &fs_w);
4485 ev_unref (EV_A);
2734 } 4486 }
2735} 4487}
2736 4488
2737inline_size void 4489inline_size void
2738infy_fork (EV_P) 4490infy_fork (EV_P)
… …
2740 int slot; 4492 int slot;
2741 4493
2742 if (fs_fd < 0) 4494 if (fs_fd < 0)
2743 return; 4495 return;
2744 4496
4497 ev_ref (EV_A);
4498 ev_io_stop (EV_A_ &fs_w);
2745 close (fs_fd); 4499 close (fs_fd);
2746 fs_fd = inotify_init (); 4500 fs_fd = infy_newfd ();
2747 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
2748 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4510 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2749 { 4511 {
2750 WL w_ = fs_hash [slot].head; 4512 WL w_ = fs_hash [slot].head;
2751 fs_hash [slot].head = 0; 4513 fs_hash [slot].head = 0;
2752 4514
2753 while (w_) 4515 while (w_)
… …
2758 w->wd = -1; 4520 w->wd = -1;
2759 4521
2760 if (fs_fd >= 0) 4522 if (fs_fd >= 0)
2761 infy_add (EV_A_ w); /* re-add, no matter what */ 4523 infy_add (EV_A_ w); /* re-add, no matter what */
2762 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);
2763 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 }
2764 } 4531 }
2765 } 4532 }
2766} 4533}
2767 4534
2768#endif 4535#endif
… …
2772#else 4539#else
2773# define EV_LSTAT(p,b) lstat (p, b) 4540# define EV_LSTAT(p,b) lstat (p, b)
2774#endif 4541#endif
2775 4542
2776void 4543void
2777ev_stat_stat (EV_P_ ev_stat *w) 4544ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
2778{ 4545{
2779 if (lstat (w->path, &w->attr) < 0) 4546 if (lstat (w->path, &w->attr) < 0)
2780 w->attr.st_nlink = 0; 4547 w->attr.st_nlink = 0;
2781 else if (!w->attr.st_nlink) 4548 else if (!w->attr.st_nlink)
2782 w->attr.st_nlink = 1; 4549 w->attr.st_nlink = 1;
2783} 4550}
2784 4551
2785static void noinline 4552noinline
4553static void
2786stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4554stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2787{ 4555{
2788 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4556 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2789 4557
2790 /* we copy this here each the time so that */ 4558 ev_statdata prev = w->attr;
2791 /* prev has the old value when the callback gets invoked */
2792 w->prev = w->attr;
2793 ev_stat_stat (EV_A_ w); 4559 ev_stat_stat (EV_A_ w);
2794 4560
2795 /* 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 */
2796 if ( 4562 if (
2797 w->prev.st_dev != w->attr.st_dev 4563 prev.st_dev != w->attr.st_dev
2798 || w->prev.st_ino != w->attr.st_ino 4564 || prev.st_ino != w->attr.st_ino
2799 || w->prev.st_mode != w->attr.st_mode 4565 || prev.st_mode != w->attr.st_mode
2800 || w->prev.st_nlink != w->attr.st_nlink 4566 || prev.st_nlink != w->attr.st_nlink
2801 || w->prev.st_uid != w->attr.st_uid 4567 || prev.st_uid != w->attr.st_uid
2802 || w->prev.st_gid != w->attr.st_gid 4568 || prev.st_gid != w->attr.st_gid
2803 || w->prev.st_rdev != w->attr.st_rdev 4569 || prev.st_rdev != w->attr.st_rdev
2804 || w->prev.st_size != w->attr.st_size 4570 || prev.st_size != w->attr.st_size
2805 || w->prev.st_atime != w->attr.st_atime 4571 || prev.st_atime != w->attr.st_atime
2806 || w->prev.st_mtime != w->attr.st_mtime 4572 || prev.st_mtime != w->attr.st_mtime
2807 || w->prev.st_ctime != w->attr.st_ctime 4573 || prev.st_ctime != w->attr.st_ctime
2808 ) { 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
2809 #if EV_USE_INOTIFY 4580 #if EV_USE_INOTIFY
2810 if (fs_fd >= 0) 4581 if (fs_fd >= 0)
2811 { 4582 {
2812 infy_del (EV_A_ w); 4583 infy_del (EV_A_ w);
2813 infy_add (EV_A_ w); 4584 infy_add (EV_A_ w);
… …
2818 ev_feed_event (EV_A_ w, EV_STAT); 4589 ev_feed_event (EV_A_ w, EV_STAT);
2819 } 4590 }
2820} 4591}
2821 4592
2822void 4593void
2823ev_stat_start (EV_P_ ev_stat *w) 4594ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
2824{ 4595{
2825 if (expect_false (ev_is_active (w))) 4596 if (expect_false (ev_is_active (w)))
2826 return; 4597 return;
2827 4598
2828 ev_stat_stat (EV_A_ w); 4599 ev_stat_stat (EV_A_ w);
… …
2838 4609
2839 if (fs_fd >= 0) 4610 if (fs_fd >= 0)
2840 infy_add (EV_A_ w); 4611 infy_add (EV_A_ w);
2841 else 4612 else
2842#endif 4613#endif
4614 {
2843 ev_timer_again (EV_A_ &w->timer); 4615 ev_timer_again (EV_A_ &w->timer);
4616 ev_unref (EV_A);
4617 }
2844 4618
2845 ev_start (EV_A_ (W)w, 1); 4619 ev_start (EV_A_ (W)w, 1);
2846 4620
2847 EV_FREQUENT_CHECK; 4621 EV_FREQUENT_CHECK;
2848} 4622}
2849 4623
2850void 4624void
2851ev_stat_stop (EV_P_ ev_stat *w) 4625ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
2852{ 4626{
2853 clear_pending (EV_A_ (W)w); 4627 clear_pending (EV_A_ (W)w);
2854 if (expect_false (!ev_is_active (w))) 4628 if (expect_false (!ev_is_active (w)))
2855 return; 4629 return;
2856 4630
2857 EV_FREQUENT_CHECK; 4631 EV_FREQUENT_CHECK;
2858 4632
2859#if EV_USE_INOTIFY 4633#if EV_USE_INOTIFY
2860 infy_del (EV_A_ w); 4634 infy_del (EV_A_ w);
2861#endif 4635#endif
4636
4637 if (ev_is_active (&w->timer))
4638 {
4639 ev_ref (EV_A);
2862 ev_timer_stop (EV_A_ &w->timer); 4640 ev_timer_stop (EV_A_ &w->timer);
4641 }
2863 4642
2864 ev_stop (EV_A_ (W)w); 4643 ev_stop (EV_A_ (W)w);
2865 4644
2866 EV_FREQUENT_CHECK; 4645 EV_FREQUENT_CHECK;
2867} 4646}
2868#endif 4647#endif
2869 4648
2870#if EV_IDLE_ENABLE 4649#if EV_IDLE_ENABLE
2871void 4650void
2872ev_idle_start (EV_P_ ev_idle *w) 4651ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
2873{ 4652{
2874 if (expect_false (ev_is_active (w))) 4653 if (expect_false (ev_is_active (w)))
2875 return; 4654 return;
2876 4655
2877 pri_adjust (EV_A_ (W)w); 4656 pri_adjust (EV_A_ (W)w);
… …
2882 int active = ++idlecnt [ABSPRI (w)]; 4661 int active = ++idlecnt [ABSPRI (w)];
2883 4662
2884 ++idleall; 4663 ++idleall;
2885 ev_start (EV_A_ (W)w, active); 4664 ev_start (EV_A_ (W)w, active);
2886 4665
2887 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);
2888 idles [ABSPRI (w)][active - 1] = w; 4667 idles [ABSPRI (w)][active - 1] = w;
2889 } 4668 }
2890 4669
2891 EV_FREQUENT_CHECK; 4670 EV_FREQUENT_CHECK;
2892} 4671}
2893 4672
2894void 4673void
2895ev_idle_stop (EV_P_ ev_idle *w) 4674ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
2896{ 4675{
2897 clear_pending (EV_A_ (W)w); 4676 clear_pending (EV_A_ (W)w);
2898 if (expect_false (!ev_is_active (w))) 4677 if (expect_false (!ev_is_active (w)))
2899 return; 4678 return;
2900 4679
… …
2912 4691
2913 EV_FREQUENT_CHECK; 4692 EV_FREQUENT_CHECK;
2914} 4693}
2915#endif 4694#endif
2916 4695
4696#if EV_PREPARE_ENABLE
2917void 4697void
2918ev_prepare_start (EV_P_ ev_prepare *w) 4698ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
2919{ 4699{
2920 if (expect_false (ev_is_active (w))) 4700 if (expect_false (ev_is_active (w)))
2921 return; 4701 return;
2922 4702
2923 EV_FREQUENT_CHECK; 4703 EV_FREQUENT_CHECK;
2924 4704
2925 ev_start (EV_A_ (W)w, ++preparecnt); 4705 ev_start (EV_A_ (W)w, ++preparecnt);
2926 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4706 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
2927 prepares [preparecnt - 1] = w; 4707 prepares [preparecnt - 1] = w;
2928 4708
2929 EV_FREQUENT_CHECK; 4709 EV_FREQUENT_CHECK;
2930} 4710}
2931 4711
2932void 4712void
2933ev_prepare_stop (EV_P_ ev_prepare *w) 4713ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
2934{ 4714{
2935 clear_pending (EV_A_ (W)w); 4715 clear_pending (EV_A_ (W)w);
2936 if (expect_false (!ev_is_active (w))) 4716 if (expect_false (!ev_is_active (w)))
2937 return; 4717 return;
2938 4718
… …
2947 4727
2948 ev_stop (EV_A_ (W)w); 4728 ev_stop (EV_A_ (W)w);
2949 4729
2950 EV_FREQUENT_CHECK; 4730 EV_FREQUENT_CHECK;
2951} 4731}
4732#endif
2952 4733
4734#if EV_CHECK_ENABLE
2953void 4735void
2954ev_check_start (EV_P_ ev_check *w) 4736ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
2955{ 4737{
2956 if (expect_false (ev_is_active (w))) 4738 if (expect_false (ev_is_active (w)))
2957 return; 4739 return;
2958 4740
2959 EV_FREQUENT_CHECK; 4741 EV_FREQUENT_CHECK;
2960 4742
2961 ev_start (EV_A_ (W)w, ++checkcnt); 4743 ev_start (EV_A_ (W)w, ++checkcnt);
2962 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 4744 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
2963 checks [checkcnt - 1] = w; 4745 checks [checkcnt - 1] = w;
2964 4746
2965 EV_FREQUENT_CHECK; 4747 EV_FREQUENT_CHECK;
2966} 4748}
2967 4749
2968void 4750void
2969ev_check_stop (EV_P_ ev_check *w) 4751ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
2970{ 4752{
2971 clear_pending (EV_A_ (W)w); 4753 clear_pending (EV_A_ (W)w);
2972 if (expect_false (!ev_is_active (w))) 4754 if (expect_false (!ev_is_active (w)))
2973 return; 4755 return;
2974 4756
… …
2983 4765
2984 ev_stop (EV_A_ (W)w); 4766 ev_stop (EV_A_ (W)w);
2985 4767
2986 EV_FREQUENT_CHECK; 4768 EV_FREQUENT_CHECK;
2987} 4769}
4770#endif
2988 4771
2989#if EV_EMBED_ENABLE 4772#if EV_EMBED_ENABLE
2990void noinline 4773noinline
4774void
2991ev_embed_sweep (EV_P_ ev_embed *w) 4775ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
2992{ 4776{
2993 ev_loop (w->other, EVLOOP_NONBLOCK); 4777 ev_run (w->other, EVRUN_NOWAIT);
2994} 4778}
2995 4779
2996static void 4780static void
2997embed_io_cb (EV_P_ ev_io *io, int revents) 4781embed_io_cb (EV_P_ ev_io *io, int revents)
2998{ 4782{
2999 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4783 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3000 4784
3001 if (ev_cb (w)) 4785 if (ev_cb (w))
3002 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4786 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3003 else 4787 else
3004 ev_loop (w->other, EVLOOP_NONBLOCK); 4788 ev_run (w->other, EVRUN_NOWAIT);
3005} 4789}
3006 4790
3007static void 4791static void
3008embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4792embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3009{ 4793{
3010 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 4794 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
3011 4795
3012 { 4796 {
3013 struct ev_loop *loop = w->other; 4797 EV_P = w->other;
3014 4798
3015 while (fdchangecnt) 4799 while (fdchangecnt)
3016 { 4800 {
3017 fd_reify (EV_A); 4801 fd_reify (EV_A);
3018 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4802 ev_run (EV_A_ EVRUN_NOWAIT);
3019 } 4803 }
3020 } 4804 }
3021} 4805}
3022 4806
3023static void 4807static void
… …
3026 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));
3027 4811
3028 ev_embed_stop (EV_A_ w); 4812 ev_embed_stop (EV_A_ w);
3029 4813
3030 { 4814 {
3031 struct ev_loop *loop = w->other; 4815 EV_P = w->other;
3032 4816
3033 ev_loop_fork (EV_A); 4817 ev_loop_fork (EV_A);
3034 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4818 ev_run (EV_A_ EVRUN_NOWAIT);
3035 } 4819 }
3036 4820
3037 ev_embed_start (EV_A_ w); 4821 ev_embed_start (EV_A_ w);
3038} 4822}
3039 4823
… …
3044 ev_idle_stop (EV_A_ idle); 4828 ev_idle_stop (EV_A_ idle);
3045} 4829}
3046#endif 4830#endif
3047 4831
3048void 4832void
3049ev_embed_start (EV_P_ ev_embed *w) 4833ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
3050{ 4834{
3051 if (expect_false (ev_is_active (w))) 4835 if (expect_false (ev_is_active (w)))
3052 return; 4836 return;
3053 4837
3054 { 4838 {
3055 struct ev_loop *loop = w->other; 4839 EV_P = w->other;
3056 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 ()));
3057 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);
3058 } 4842 }
3059 4843
3060 EV_FREQUENT_CHECK; 4844 EV_FREQUENT_CHECK;
… …
3075 4859
3076 EV_FREQUENT_CHECK; 4860 EV_FREQUENT_CHECK;
3077} 4861}
3078 4862
3079void 4863void
3080ev_embed_stop (EV_P_ ev_embed *w) 4864ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
3081{ 4865{
3082 clear_pending (EV_A_ (W)w); 4866 clear_pending (EV_A_ (W)w);
3083 if (expect_false (!ev_is_active (w))) 4867 if (expect_false (!ev_is_active (w)))
3084 return; 4868 return;
3085 4869
… …
3087 4871
3088 ev_io_stop (EV_A_ &w->io); 4872 ev_io_stop (EV_A_ &w->io);
3089 ev_prepare_stop (EV_A_ &w->prepare); 4873 ev_prepare_stop (EV_A_ &w->prepare);
3090 ev_fork_stop (EV_A_ &w->fork); 4874 ev_fork_stop (EV_A_ &w->fork);
3091 4875
4876 ev_stop (EV_A_ (W)w);
4877
3092 EV_FREQUENT_CHECK; 4878 EV_FREQUENT_CHECK;
3093} 4879}
3094#endif 4880#endif
3095 4881
3096#if EV_FORK_ENABLE 4882#if EV_FORK_ENABLE
3097void 4883void
3098ev_fork_start (EV_P_ ev_fork *w) 4884ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
3099{ 4885{
3100 if (expect_false (ev_is_active (w))) 4886 if (expect_false (ev_is_active (w)))
3101 return; 4887 return;
3102 4888
3103 EV_FREQUENT_CHECK; 4889 EV_FREQUENT_CHECK;
3104 4890
3105 ev_start (EV_A_ (W)w, ++forkcnt); 4891 ev_start (EV_A_ (W)w, ++forkcnt);
3106 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 4892 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
3107 forks [forkcnt - 1] = w; 4893 forks [forkcnt - 1] = w;
3108 4894
3109 EV_FREQUENT_CHECK; 4895 EV_FREQUENT_CHECK;
3110} 4896}
3111 4897
3112void 4898void
3113ev_fork_stop (EV_P_ ev_fork *w) 4899ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
3114{ 4900{
3115 clear_pending (EV_A_ (W)w); 4901 clear_pending (EV_A_ (W)w);
3116 if (expect_false (!ev_is_active (w))) 4902 if (expect_false (!ev_is_active (w)))
3117 return; 4903 return;
3118 4904
… …
3129 4915
3130 EV_FREQUENT_CHECK; 4916 EV_FREQUENT_CHECK;
3131} 4917}
3132#endif 4918#endif
3133 4919
3134#if EV_ASYNC_ENABLE 4920#if EV_CLEANUP_ENABLE
3135void 4921void
3136ev_async_start (EV_P_ ev_async *w) 4922ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
3137{ 4923{
3138 if (expect_false (ev_is_active (w))) 4924 if (expect_false (ev_is_active (w)))
3139 return; 4925 return;
3140 4926
3141 evpipe_init (EV_A);
3142
3143 EV_FREQUENT_CHECK; 4927 EV_FREQUENT_CHECK;
3144 4928
3145 ev_start (EV_A_ (W)w, ++asynccnt); 4929 ev_start (EV_A_ (W)w, ++cleanupcnt);
3146 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 4930 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
3147 asyncs [asynccnt - 1] = w; 4931 cleanups [cleanupcnt - 1] = w;
3148 4932
4933 /* cleanup watchers should never keep a refcount on the loop */
4934 ev_unref (EV_A);
3149 EV_FREQUENT_CHECK; 4935 EV_FREQUENT_CHECK;
3150} 4936}
3151 4937
3152void 4938void
3153ev_async_stop (EV_P_ ev_async *w) 4939ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
3154{ 4940{
3155 clear_pending (EV_A_ (W)w); 4941 clear_pending (EV_A_ (W)w);
3156 if (expect_false (!ev_is_active (w))) 4942 if (expect_false (!ev_is_active (w)))
3157 return; 4943 return;
3158 4944
3159 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;
3160 4989
3161 { 4990 {
3162 int active = ev_active (w); 4991 int active = ev_active (w);
3163 4992
3164 asyncs [active - 1] = asyncs [--asynccnt]; 4993 asyncs [active - 1] = asyncs [--asynccnt];
… …
3169 4998
3170 EV_FREQUENT_CHECK; 4999 EV_FREQUENT_CHECK;
3171} 5000}
3172 5001
3173void 5002void
3174ev_async_send (EV_P_ ev_async *w) 5003ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
3175{ 5004{
3176 w->sent = 1; 5005 w->sent = 1;
3177 evpipe_write (EV_A_ &gotasync); 5006 evpipe_write (EV_A_ &async_pending);
3178} 5007}
3179#endif 5008#endif
3180 5009
3181/*****************************************************************************/ 5010/*****************************************************************************/
3182 5011
… …
3216 5045
3217 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));
3218} 5047}
3219 5048
3220void 5049void
3221ev_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
3222{ 5051{
3223 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));
3224
3225 if (expect_false (!once))
3226 {
3227 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
3228 return;
3229 }
3230 5053
3231 once->cb = cb; 5054 once->cb = cb;
3232 once->arg = arg; 5055 once->arg = arg;
3233 5056
3234 ev_init (&once->io, once_cb_io); 5057 ev_init (&once->io, once_cb_io);
… …
3247} 5070}
3248 5071
3249/*****************************************************************************/ 5072/*****************************************************************************/
3250 5073
3251#if EV_WALK_ENABLE 5074#if EV_WALK_ENABLE
5075ecb_cold
3252void 5076void
3253ev_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
3254{ 5078{
3255 int i, j; 5079 int i, j;
3256 ev_watcher_list *wl, *wn; 5080 ev_watcher_list *wl, *wn;
3257 5081
3258 if (types & (EV_IO | EV_EMBED)) 5082 if (types & (EV_IO | EV_EMBED))
… …
3301 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 5125 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3302#endif 5126#endif
3303 5127
3304#if EV_IDLE_ENABLE 5128#if EV_IDLE_ENABLE
3305 if (types & EV_IDLE) 5129 if (types & EV_IDLE)
3306 for (j = NUMPRI; i--; ) 5130 for (j = NUMPRI; j--; )
3307 for (i = idlecnt [j]; i--; ) 5131 for (i = idlecnt [j]; i--; )
3308 cb (EV_A_ EV_IDLE, idles [j][i]); 5132 cb (EV_A_ EV_IDLE, idles [j][i]);
3309#endif 5133#endif
3310 5134
3311#if EV_FORK_ENABLE 5135#if EV_FORK_ENABLE
… …
3319 if (types & EV_ASYNC) 5143 if (types & EV_ASYNC)
3320 for (i = asynccnt; i--; ) 5144 for (i = asynccnt; i--; )
3321 cb (EV_A_ EV_ASYNC, asyncs [i]); 5145 cb (EV_A_ EV_ASYNC, asyncs [i]);
3322#endif 5146#endif
3323 5147
5148#if EV_PREPARE_ENABLE
3324 if (types & EV_PREPARE) 5149 if (types & EV_PREPARE)
3325 for (i = preparecnt; i--; ) 5150 for (i = preparecnt; i--; )
3326#if EV_EMBED_ENABLE 5151# if EV_EMBED_ENABLE
3327 if (ev_cb (prepares [i]) != embed_prepare_cb) 5152 if (ev_cb (prepares [i]) != embed_prepare_cb)
3328#endif 5153# endif
3329 cb (EV_A_ EV_PREPARE, prepares [i]); 5154 cb (EV_A_ EV_PREPARE, prepares [i]);
5155#endif
3330 5156
5157#if EV_CHECK_ENABLE
3331 if (types & EV_CHECK) 5158 if (types & EV_CHECK)
3332 for (i = checkcnt; i--; ) 5159 for (i = checkcnt; i--; )
3333 cb (EV_A_ EV_CHECK, checks [i]); 5160 cb (EV_A_ EV_CHECK, checks [i]);
5161#endif
3334 5162
5163#if EV_SIGNAL_ENABLE
3335 if (types & EV_SIGNAL) 5164 if (types & EV_SIGNAL)
3336 for (i = 0; i < signalmax; ++i) 5165 for (i = 0; i < EV_NSIG - 1; ++i)
3337 for (wl = signals [i].head; wl; ) 5166 for (wl = signals [i].head; wl; )
3338 { 5167 {
3339 wn = wl->next; 5168 wn = wl->next;
3340 cb (EV_A_ EV_SIGNAL, wl); 5169 cb (EV_A_ EV_SIGNAL, wl);
3341 wl = wn; 5170 wl = wn;
3342 } 5171 }
5172#endif
3343 5173
5174#if EV_CHILD_ENABLE
3344 if (types & EV_CHILD) 5175 if (types & EV_CHILD)
3345 for (i = EV_PID_HASHSIZE; i--; ) 5176 for (i = (EV_PID_HASHSIZE); i--; )
3346 for (wl = childs [i]; wl; ) 5177 for (wl = childs [i]; wl; )
3347 { 5178 {
3348 wn = wl->next; 5179 wn = wl->next;
3349 cb (EV_A_ EV_CHILD, wl); 5180 cb (EV_A_ EV_CHILD, wl);
3350 wl = wn; 5181 wl = wn;
3351 } 5182 }
5183#endif
3352/* EV_STAT 0x00001000 /* stat data changed */ 5184/* EV_STAT 0x00001000 /* stat data changed */
3353/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 5185/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3354} 5186}
3355#endif 5187#endif
3356 5188
3357#if EV_MULTIPLICITY 5189#if EV_MULTIPLICITY
3358 #include "ev_wrap.h" 5190 #include "ev_wrap.h"
3359#endif 5191#endif
3360 5192
3361#ifdef __cplusplus
3362}
3363#endif
3364

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