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Comparing libev/ev.c (file contents):
Revision 1.292 by root, Mon Jun 29 07:22:56 2009 UTC vs.
Revision 1.498 by root, Wed Jun 26 00:01:46 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
287#endif 401#endif
288 402
289/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 403/* 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. */ 404/* which makes programs even slower. might work on other unices, too. */
291#if EV_USE_CLOCK_SYSCALL 405#if EV_USE_CLOCK_SYSCALL
292# include <syscall.h> 406# include <sys/syscall.h>
293# ifdef SYS_clock_gettime 407# ifdef SYS_clock_gettime
294# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 408# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
295# undef EV_USE_MONOTONIC 409# undef EV_USE_MONOTONIC
296# define EV_USE_MONOTONIC 1 410# define EV_USE_MONOTONIC 1
297# else 411# else
… …
316# undef EV_USE_INOTIFY 430# undef EV_USE_INOTIFY
317# define EV_USE_INOTIFY 0 431# define EV_USE_INOTIFY 0
318#endif 432#endif
319 433
320#if !EV_USE_NANOSLEEP 434#if !EV_USE_NANOSLEEP
321# ifndef _WIN32 435/* hp-ux has it in sys/time.h, which we unconditionally include above */
436# if !defined _WIN32 && !defined __hpux
322# include <sys/select.h> 437# include <sys/select.h>
323# endif 438# endif
324#endif 439#endif
325 440
441#if EV_USE_LINUXAIO
442# include <sys/syscall.h>
443# if !SYS_io_getevents || !EV_USE_EPOLL /* ev_linxaio uses ev_poll.c:ev_epoll_create */
444# undef EV_USE_LINUXAIO
445# define EV_USE_LINUXAIO 0
446# endif
447#endif
448
326#if EV_USE_INOTIFY 449#if EV_USE_INOTIFY
327# include <sys/utsname.h>
328# include <sys/statfs.h> 450# include <sys/statfs.h>
329# include <sys/inotify.h> 451# include <sys/inotify.h>
330/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 452/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
331# ifndef IN_DONT_FOLLOW 453# ifndef IN_DONT_FOLLOW
332# undef EV_USE_INOTIFY 454# undef EV_USE_INOTIFY
333# define EV_USE_INOTIFY 0 455# define EV_USE_INOTIFY 0
334# endif 456# endif
335#endif 457#endif
336 458
337#if EV_SELECT_IS_WINSOCKET
338# include <winsock.h>
339#endif
340
341#if EV_USE_EVENTFD 459#if EV_USE_EVENTFD
342/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 460/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
343# include <stdint.h> 461# include <stdint.h>
344# ifdef __cplusplus 462# ifndef EFD_NONBLOCK
345extern "C" { 463# define EFD_NONBLOCK O_NONBLOCK
346# endif 464# endif
347int eventfd (unsigned int initval, int flags); 465# ifndef EFD_CLOEXEC
348# ifdef __cplusplus 466# ifdef O_CLOEXEC
349} 467# define EFD_CLOEXEC O_CLOEXEC
468# else
469# define EFD_CLOEXEC 02000000
470# endif
350# endif 471# endif
472EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
473#endif
474
475#if EV_USE_SIGNALFD
476/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
477# include <stdint.h>
478# ifndef SFD_NONBLOCK
479# define SFD_NONBLOCK O_NONBLOCK
480# endif
481# ifndef SFD_CLOEXEC
482# ifdef O_CLOEXEC
483# define SFD_CLOEXEC O_CLOEXEC
484# else
485# define SFD_CLOEXEC 02000000
486# endif
487# endif
488EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
489
490struct signalfd_siginfo
491{
492 uint32_t ssi_signo;
493 char pad[128 - sizeof (uint32_t)];
494};
351#endif 495#endif
352 496
353/**/ 497/**/
354 498
355#if EV_VERIFY >= 3 499#if EV_VERIFY >= 3
356# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 500# define EV_FREQUENT_CHECK ev_verify (EV_A)
357#else 501#else
358# define EV_FREQUENT_CHECK do { } while (0) 502# define EV_FREQUENT_CHECK do { } while (0)
359#endif 503#endif
360 504
361/* 505/*
362 * This is used to avoid floating point rounding problems. 506 * 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. 507 * This value is good at least till the year 4000.
367 * Better solutions welcome.
368 */ 508 */
369#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 509#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
510/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
370 511
371#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 512#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) */ 513#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 */
374 514
515#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
516#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
517
518/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
519/* ECB.H BEGIN */
520/*
521 * libecb - http://software.schmorp.de/pkg/libecb
522 *
523 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
524 * Copyright (©) 2011 Emanuele Giaquinta
525 * All rights reserved.
526 *
527 * Redistribution and use in source and binary forms, with or without modifica-
528 * tion, are permitted provided that the following conditions are met:
529 *
530 * 1. Redistributions of source code must retain the above copyright notice,
531 * this list of conditions and the following disclaimer.
532 *
533 * 2. Redistributions in binary form must reproduce the above copyright
534 * notice, this list of conditions and the following disclaimer in the
535 * documentation and/or other materials provided with the distribution.
536 *
537 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
538 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
539 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
540 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
541 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
542 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
543 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
544 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
545 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
546 * OF THE POSSIBILITY OF SUCH DAMAGE.
547 *
548 * Alternatively, the contents of this file may be used under the terms of
549 * the GNU General Public License ("GPL") version 2 or any later version,
550 * in which case the provisions of the GPL are applicable instead of
551 * the above. If you wish to allow the use of your version of this file
552 * only under the terms of the GPL and not to allow others to use your
553 * version of this file under the BSD license, indicate your decision
554 * by deleting the provisions above and replace them with the notice
555 * and other provisions required by the GPL. If you do not delete the
556 * provisions above, a recipient may use your version of this file under
557 * either the BSD or the GPL.
558 */
559
560#ifndef ECB_H
561#define ECB_H
562
563/* 16 bits major, 16 bits minor */
564#define ECB_VERSION 0x00010006
565
566#ifdef _WIN32
567 typedef signed char int8_t;
568 typedef unsigned char uint8_t;
569 typedef signed short int16_t;
570 typedef unsigned short uint16_t;
571 typedef signed int int32_t;
572 typedef unsigned int uint32_t;
375#if __GNUC__ >= 4 573 #if __GNUC__
376# define expect(expr,value) __builtin_expect ((expr),(value)) 574 typedef signed long long int64_t;
377# define noinline __attribute__ ((noinline)) 575 typedef unsigned long long uint64_t;
576 #else /* _MSC_VER || __BORLANDC__ */
577 typedef signed __int64 int64_t;
578 typedef unsigned __int64 uint64_t;
579 #endif
580 #ifdef _WIN64
581 #define ECB_PTRSIZE 8
582 typedef uint64_t uintptr_t;
583 typedef int64_t intptr_t;
584 #else
585 #define ECB_PTRSIZE 4
586 typedef uint32_t uintptr_t;
587 typedef int32_t intptr_t;
588 #endif
378#else 589#else
379# define expect(expr,value) (expr) 590 #include <inttypes.h>
380# define noinline 591 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
381# if __STDC_VERSION__ < 199901L && __GNUC__ < 2 592 #define ECB_PTRSIZE 8
382# define inline 593 #else
594 #define ECB_PTRSIZE 4
595 #endif
383# endif 596#endif
597
598#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
599#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
600
601/* work around x32 idiocy by defining proper macros */
602#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
603 #if _ILP32
604 #define ECB_AMD64_X32 1
605 #else
606 #define ECB_AMD64 1
384#endif 607 #endif
608#endif
385 609
386#define expect_false(expr) expect ((expr) != 0, 0) 610/* many compilers define _GNUC_ to some versions but then only implement
387#define expect_true(expr) expect ((expr) != 0, 1) 611 * what their idiot authors think are the "more important" extensions,
388#define inline_size static inline 612 * causing enormous grief in return for some better fake benchmark numbers.
389 613 * or so.
390#if EV_MINIMAL 614 * we try to detect these and simply assume they are not gcc - if they have
391# define inline_speed static noinline 615 * an issue with that they should have done it right in the first place.
616 */
617#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
618 #define ECB_GCC_VERSION(major,minor) 0
392#else 619#else
620 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
621#endif
622
623#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
624
625#if __clang__ && defined __has_builtin
626 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
627#else
628 #define ECB_CLANG_BUILTIN(x) 0
629#endif
630
631#if __clang__ && defined __has_extension
632 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
633#else
634 #define ECB_CLANG_EXTENSION(x) 0
635#endif
636
637#define ECB_CPP (__cplusplus+0)
638#define ECB_CPP11 (__cplusplus >= 201103L)
639#define ECB_CPP14 (__cplusplus >= 201402L)
640#define ECB_CPP17 (__cplusplus >= 201703L)
641
642#if ECB_CPP
643 #define ECB_C 0
644 #define ECB_STDC_VERSION 0
645#else
646 #define ECB_C 1
647 #define ECB_STDC_VERSION __STDC_VERSION__
648#endif
649
650#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
651#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
652#define ECB_C17 (ECB_STDC_VERSION >= 201710L)
653
654#if ECB_CPP
655 #define ECB_EXTERN_C extern "C"
656 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
657 #define ECB_EXTERN_C_END }
658#else
659 #define ECB_EXTERN_C extern
660 #define ECB_EXTERN_C_BEG
661 #define ECB_EXTERN_C_END
662#endif
663
664/*****************************************************************************/
665
666/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
667/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
668
669#if ECB_NO_THREADS
670 #define ECB_NO_SMP 1
671#endif
672
673#if ECB_NO_SMP
674 #define ECB_MEMORY_FENCE do { } while (0)
675#endif
676
677/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
678#if __xlC__ && ECB_CPP
679 #include <builtins.h>
680#endif
681
682#if 1400 <= _MSC_VER
683 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
684#endif
685
686#ifndef ECB_MEMORY_FENCE
687 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
688 #define ECB_MEMORY_FENCE_RELAXED __asm__ __volatile__ ("" : : : "memory")
689 #if __i386 || __i386__
690 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
691 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
692 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
693 #elif ECB_GCC_AMD64
694 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
695 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
696 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
697 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
698 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
699 #elif defined __ARM_ARCH_2__ \
700 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
701 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
702 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
703 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
704 || defined __ARM_ARCH_5TEJ__
705 /* should not need any, unless running old code on newer cpu - arm doesn't support that */
706 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
707 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
708 || defined __ARM_ARCH_6T2__
709 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
710 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
711 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
712 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
713 #elif __aarch64__
714 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
715 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
716 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
717 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
718 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
719 #elif defined __s390__ || defined __s390x__
720 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
721 #elif defined __mips__
722 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
723 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
724 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
725 #elif defined __alpha__
726 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
727 #elif defined __hppa__
728 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
729 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
730 #elif defined __ia64__
731 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
732 #elif defined __m68k__
733 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
734 #elif defined __m88k__
735 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
736 #elif defined __sh__
737 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
738 #endif
739 #endif
740#endif
741
742#ifndef ECB_MEMORY_FENCE
743 #if ECB_GCC_VERSION(4,7)
744 /* see comment below (stdatomic.h) about the C11 memory model. */
745 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
746 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
747 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
748 #define ECB_MEMORY_FENCE_RELAXED __atomic_thread_fence (__ATOMIC_RELAXED)
749
750 #elif ECB_CLANG_EXTENSION(c_atomic)
751 /* see comment below (stdatomic.h) about the C11 memory model. */
752 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
753 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
754 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
755 #define ECB_MEMORY_FENCE_RELAXED __c11_atomic_thread_fence (__ATOMIC_RELAXED)
756
757 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
758 #define ECB_MEMORY_FENCE __sync_synchronize ()
759 #elif _MSC_VER >= 1500 /* VC++ 2008 */
760 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
761 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
762 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
763 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
764 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
765 #elif _MSC_VER >= 1400 /* VC++ 2005 */
766 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
767 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
768 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
769 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
770 #elif defined _WIN32
771 #include <WinNT.h>
772 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
773 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
774 #include <mbarrier.h>
775 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
776 #define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier ()
777 #define ECB_MEMORY_FENCE_RELEASE __machine_rel_barrier ()
778 #define ECB_MEMORY_FENCE_RELAXED __compiler_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 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
790 #define ECB_MEMORY_FENCE_ACQUIRE atomic_thread_fence (memory_order_acquire)
791 #define ECB_MEMORY_FENCE_RELEASE atomic_thread_fence (memory_order_release)
792 #endif
793#endif
794
795#ifndef ECB_MEMORY_FENCE
796 #if !ECB_AVOID_PTHREADS
797 /*
798 * if you get undefined symbol references to pthread_mutex_lock,
799 * or failure to find pthread.h, then you should implement
800 * the ECB_MEMORY_FENCE operations for your cpu/compiler
801 * OR provide pthread.h and link against the posix thread library
802 * of your system.
803 */
804 #include <pthread.h>
805 #define ECB_NEEDS_PTHREADS 1
806 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
807
808 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
809 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
810 #endif
811#endif
812
813#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
814 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
815#endif
816
817#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
818 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
819#endif
820
821#if !defined ECB_MEMORY_FENCE_RELAXED && defined ECB_MEMORY_FENCE
822 #define ECB_MEMORY_FENCE_RELAXED ECB_MEMORY_FENCE /* very heavy-handed */
823#endif
824
825/*****************************************************************************/
826
827#if ECB_CPP
828 #define ecb_inline static inline
829#elif ECB_GCC_VERSION(2,5)
830 #define ecb_inline static __inline__
831#elif ECB_C99
832 #define ecb_inline static inline
833#else
834 #define ecb_inline static
835#endif
836
837#if ECB_GCC_VERSION(3,3)
838 #define ecb_restrict __restrict__
839#elif ECB_C99
840 #define ecb_restrict restrict
841#else
842 #define ecb_restrict
843#endif
844
845typedef int ecb_bool;
846
847#define ECB_CONCAT_(a, b) a ## b
848#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
849#define ECB_STRINGIFY_(a) # a
850#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
851#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
852
853#define ecb_function_ ecb_inline
854
855#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
856 #define ecb_attribute(attrlist) __attribute__ (attrlist)
857#else
858 #define ecb_attribute(attrlist)
859#endif
860
861#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
862 #define ecb_is_constant(expr) __builtin_constant_p (expr)
863#else
864 /* possible C11 impl for integral types
865 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
866 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
867
868 #define ecb_is_constant(expr) 0
869#endif
870
871#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
872 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
873#else
874 #define ecb_expect(expr,value) (expr)
875#endif
876
877#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
878 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
879#else
880 #define ecb_prefetch(addr,rw,locality)
881#endif
882
883/* no emulation for ecb_decltype */
884#if ECB_CPP11
885 // older implementations might have problems with decltype(x)::type, work around it
886 template<class T> struct ecb_decltype_t { typedef T type; };
887 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
888#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
889 #define ecb_decltype(x) __typeof__ (x)
890#endif
891
892#if _MSC_VER >= 1300
893 #define ecb_deprecated __declspec (deprecated)
894#else
895 #define ecb_deprecated ecb_attribute ((__deprecated__))
896#endif
897
898#if _MSC_VER >= 1500
899 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
900#elif ECB_GCC_VERSION(4,5)
901 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
902#else
903 #define ecb_deprecated_message(msg) ecb_deprecated
904#endif
905
906#if _MSC_VER >= 1400
907 #define ecb_noinline __declspec (noinline)
908#else
909 #define ecb_noinline ecb_attribute ((__noinline__))
910#endif
911
912#define ecb_unused ecb_attribute ((__unused__))
913#define ecb_const ecb_attribute ((__const__))
914#define ecb_pure ecb_attribute ((__pure__))
915
916#if ECB_C11 || __IBMC_NORETURN
917 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
918 #define ecb_noreturn _Noreturn
919#elif ECB_CPP11
920 #define ecb_noreturn [[noreturn]]
921#elif _MSC_VER >= 1200
922 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
923 #define ecb_noreturn __declspec (noreturn)
924#else
925 #define ecb_noreturn ecb_attribute ((__noreturn__))
926#endif
927
928#if ECB_GCC_VERSION(4,3)
929 #define ecb_artificial ecb_attribute ((__artificial__))
930 #define ecb_hot ecb_attribute ((__hot__))
931 #define ecb_cold ecb_attribute ((__cold__))
932#else
933 #define ecb_artificial
934 #define ecb_hot
935 #define ecb_cold
936#endif
937
938/* put around conditional expressions if you are very sure that the */
939/* expression is mostly true or mostly false. note that these return */
940/* booleans, not the expression. */
941#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
942#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
943/* for compatibility to the rest of the world */
944#define ecb_likely(expr) ecb_expect_true (expr)
945#define ecb_unlikely(expr) ecb_expect_false (expr)
946
947/* count trailing zero bits and count # of one bits */
948#if ECB_GCC_VERSION(3,4) \
949 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
950 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
951 && ECB_CLANG_BUILTIN(__builtin_popcount))
952 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
953 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
954 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
955 #define ecb_ctz32(x) __builtin_ctz (x)
956 #define ecb_ctz64(x) __builtin_ctzll (x)
957 #define ecb_popcount32(x) __builtin_popcount (x)
958 /* no popcountll */
959#else
960 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
961 ecb_function_ ecb_const int
962 ecb_ctz32 (uint32_t x)
963 {
964#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
965 unsigned long r;
966 _BitScanForward (&r, x);
967 return (int)r;
968#else
969 int r = 0;
970
971 x &= ~x + 1; /* this isolates the lowest bit */
972
973#if ECB_branchless_on_i386
974 r += !!(x & 0xaaaaaaaa) << 0;
975 r += !!(x & 0xcccccccc) << 1;
976 r += !!(x & 0xf0f0f0f0) << 2;
977 r += !!(x & 0xff00ff00) << 3;
978 r += !!(x & 0xffff0000) << 4;
979#else
980 if (x & 0xaaaaaaaa) r += 1;
981 if (x & 0xcccccccc) r += 2;
982 if (x & 0xf0f0f0f0) r += 4;
983 if (x & 0xff00ff00) r += 8;
984 if (x & 0xffff0000) r += 16;
985#endif
986
987 return r;
988#endif
989 }
990
991 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
992 ecb_function_ ecb_const int
993 ecb_ctz64 (uint64_t x)
994 {
995#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
996 unsigned long r;
997 _BitScanForward64 (&r, x);
998 return (int)r;
999#else
1000 int shift = x & 0xffffffff ? 0 : 32;
1001 return ecb_ctz32 (x >> shift) + shift;
1002#endif
1003 }
1004
1005 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
1006 ecb_function_ ecb_const int
1007 ecb_popcount32 (uint32_t x)
1008 {
1009 x -= (x >> 1) & 0x55555555;
1010 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
1011 x = ((x >> 4) + x) & 0x0f0f0f0f;
1012 x *= 0x01010101;
1013
1014 return x >> 24;
1015 }
1016
1017 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
1018 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
1019 {
1020#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1021 unsigned long r;
1022 _BitScanReverse (&r, x);
1023 return (int)r;
1024#else
1025 int r = 0;
1026
1027 if (x >> 16) { x >>= 16; r += 16; }
1028 if (x >> 8) { x >>= 8; r += 8; }
1029 if (x >> 4) { x >>= 4; r += 4; }
1030 if (x >> 2) { x >>= 2; r += 2; }
1031 if (x >> 1) { r += 1; }
1032
1033 return r;
1034#endif
1035 }
1036
1037 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
1038 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
1039 {
1040#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1041 unsigned long r;
1042 _BitScanReverse64 (&r, x);
1043 return (int)r;
1044#else
1045 int r = 0;
1046
1047 if (x >> 32) { x >>= 32; r += 32; }
1048
1049 return r + ecb_ld32 (x);
1050#endif
1051 }
1052#endif
1053
1054ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
1055ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
1056ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
1057ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
1058
1059ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
1060ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
1061{
1062 return ( (x * 0x0802U & 0x22110U)
1063 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
1064}
1065
1066ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
1067ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
1068{
1069 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
1070 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
1071 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
1072 x = ( x >> 8 ) | ( x << 8);
1073
1074 return x;
1075}
1076
1077ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
1078ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
1079{
1080 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
1081 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
1082 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
1083 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
1084 x = ( x >> 16 ) | ( x << 16);
1085
1086 return x;
1087}
1088
1089/* popcount64 is only available on 64 bit cpus as gcc builtin */
1090/* so for this version we are lazy */
1091ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
1092ecb_function_ ecb_const int
1093ecb_popcount64 (uint64_t x)
1094{
1095 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
1096}
1097
1098ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
1099ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
1100ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
1101ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
1102ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
1103ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
1104ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
1105ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
1106
1107ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
1108ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
1109ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
1110ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
1111ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
1112ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
1113ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
1114ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
1115
1116#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1117 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1118 #define ecb_bswap16(x) __builtin_bswap16 (x)
1119 #else
1120 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1121 #endif
1122 #define ecb_bswap32(x) __builtin_bswap32 (x)
1123 #define ecb_bswap64(x) __builtin_bswap64 (x)
1124#elif _MSC_VER
1125 #include <stdlib.h>
1126 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1127 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1128 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
1129#else
1130 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
1131 ecb_function_ ecb_const uint16_t
1132 ecb_bswap16 (uint16_t x)
1133 {
1134 return ecb_rotl16 (x, 8);
1135 }
1136
1137 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
1138 ecb_function_ ecb_const uint32_t
1139 ecb_bswap32 (uint32_t x)
1140 {
1141 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
1142 }
1143
1144 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
1145 ecb_function_ ecb_const uint64_t
1146 ecb_bswap64 (uint64_t x)
1147 {
1148 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
1149 }
1150#endif
1151
1152#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
1153 #define ecb_unreachable() __builtin_unreachable ()
1154#else
1155 /* this seems to work fine, but gcc always emits a warning for it :/ */
1156 ecb_inline ecb_noreturn void ecb_unreachable (void);
1157 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
1158#endif
1159
1160/* try to tell the compiler that some condition is definitely true */
1161#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
1162
1163ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
1164ecb_inline ecb_const uint32_t
1165ecb_byteorder_helper (void)
1166{
1167 /* the union code still generates code under pressure in gcc, */
1168 /* but less than using pointers, and always seems to */
1169 /* successfully return a constant. */
1170 /* the reason why we have this horrible preprocessor mess */
1171 /* is to avoid it in all cases, at least on common architectures */
1172 /* or when using a recent enough gcc version (>= 4.6) */
1173#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1174 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1175 #define ECB_LITTLE_ENDIAN 1
1176 return 0x44332211;
1177#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1178 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1179 #define ECB_BIG_ENDIAN 1
1180 return 0x11223344;
1181#else
1182 union
1183 {
1184 uint8_t c[4];
1185 uint32_t u;
1186 } u = { 0x11, 0x22, 0x33, 0x44 };
1187 return u.u;
1188#endif
1189}
1190
1191ecb_inline ecb_const ecb_bool ecb_big_endian (void);
1192ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
1193ecb_inline ecb_const ecb_bool ecb_little_endian (void);
1194ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
1195
1196#if ECB_GCC_VERSION(3,0) || ECB_C99
1197 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1198#else
1199 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1200#endif
1201
1202#if ECB_CPP
1203 template<typename T>
1204 static inline T ecb_div_rd (T val, T div)
1205 {
1206 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1207 }
1208 template<typename T>
1209 static inline T ecb_div_ru (T val, T div)
1210 {
1211 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1212 }
1213#else
1214 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1215 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1216#endif
1217
1218#if ecb_cplusplus_does_not_suck
1219 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1220 template<typename T, int N>
1221 static inline int ecb_array_length (const T (&arr)[N])
1222 {
1223 return N;
1224 }
1225#else
1226 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1227#endif
1228
1229ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1230ecb_function_ ecb_const uint32_t
1231ecb_binary16_to_binary32 (uint32_t x)
1232{
1233 unsigned int s = (x & 0x8000) << (31 - 15);
1234 int e = (x >> 10) & 0x001f;
1235 unsigned int m = x & 0x03ff;
1236
1237 if (ecb_expect_false (e == 31))
1238 /* infinity or NaN */
1239 e = 255 - (127 - 15);
1240 else if (ecb_expect_false (!e))
1241 {
1242 if (ecb_expect_true (!m))
1243 /* zero, handled by code below by forcing e to 0 */
1244 e = 0 - (127 - 15);
1245 else
1246 {
1247 /* subnormal, renormalise */
1248 unsigned int s = 10 - ecb_ld32 (m);
1249
1250 m = (m << s) & 0x3ff; /* mask implicit bit */
1251 e -= s - 1;
1252 }
1253 }
1254
1255 /* e and m now are normalised, or zero, (or inf or nan) */
1256 e += 127 - 15;
1257
1258 return s | (e << 23) | (m << (23 - 10));
1259}
1260
1261ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1262ecb_function_ ecb_const uint16_t
1263ecb_binary32_to_binary16 (uint32_t x)
1264{
1265 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1266 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1267 unsigned int m = x & 0x007fffff;
1268
1269 x &= 0x7fffffff;
1270
1271 /* if it's within range of binary16 normals, use fast path */
1272 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1273 {
1274 /* mantissa round-to-even */
1275 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1276
1277 /* handle overflow */
1278 if (ecb_expect_false (m >= 0x00800000))
1279 {
1280 m >>= 1;
1281 e += 1;
1282 }
1283
1284 return s | (e << 10) | (m >> (23 - 10));
1285 }
1286
1287 /* handle large numbers and infinity */
1288 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1289 return s | 0x7c00;
1290
1291 /* handle zero, subnormals and small numbers */
1292 if (ecb_expect_true (x < 0x38800000))
1293 {
1294 /* zero */
1295 if (ecb_expect_true (!x))
1296 return s;
1297
1298 /* handle subnormals */
1299
1300 /* too small, will be zero */
1301 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1302 return s;
1303
1304 m |= 0x00800000; /* make implicit bit explicit */
1305
1306 /* very tricky - we need to round to the nearest e (+10) bit value */
1307 {
1308 unsigned int bits = 14 - e;
1309 unsigned int half = (1 << (bits - 1)) - 1;
1310 unsigned int even = (m >> bits) & 1;
1311
1312 /* if this overflows, we will end up with a normalised number */
1313 m = (m + half + even) >> bits;
1314 }
1315
1316 return s | m;
1317 }
1318
1319 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1320 m >>= 13;
1321
1322 return s | 0x7c00 | m | !m;
1323}
1324
1325/*******************************************************************************/
1326/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1327
1328/* basically, everything uses "ieee pure-endian" floating point numbers */
1329/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1330#if 0 \
1331 || __i386 || __i386__ \
1332 || ECB_GCC_AMD64 \
1333 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1334 || defined __s390__ || defined __s390x__ \
1335 || defined __mips__ \
1336 || defined __alpha__ \
1337 || defined __hppa__ \
1338 || defined __ia64__ \
1339 || defined __m68k__ \
1340 || defined __m88k__ \
1341 || defined __sh__ \
1342 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1343 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1344 || defined __aarch64__
1345 #define ECB_STDFP 1
1346 #include <string.h> /* for memcpy */
1347#else
1348 #define ECB_STDFP 0
1349#endif
1350
1351#ifndef ECB_NO_LIBM
1352
1353 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1354
1355 /* only the oldest of old doesn't have this one. solaris. */
1356 #ifdef INFINITY
1357 #define ECB_INFINITY INFINITY
1358 #else
1359 #define ECB_INFINITY HUGE_VAL
1360 #endif
1361
1362 #ifdef NAN
1363 #define ECB_NAN NAN
1364 #else
1365 #define ECB_NAN ECB_INFINITY
1366 #endif
1367
1368 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1369 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1370 #define ecb_frexpf(x,e) frexpf ((x), (e))
1371 #else
1372 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1373 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1374 #endif
1375
1376 /* convert a float to ieee single/binary32 */
1377 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1378 ecb_function_ ecb_const uint32_t
1379 ecb_float_to_binary32 (float x)
1380 {
1381 uint32_t r;
1382
1383 #if ECB_STDFP
1384 memcpy (&r, &x, 4);
1385 #else
1386 /* slow emulation, works for anything but -0 */
1387 uint32_t m;
1388 int e;
1389
1390 if (x == 0e0f ) return 0x00000000U;
1391 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1392 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1393 if (x != x ) return 0x7fbfffffU;
1394
1395 m = ecb_frexpf (x, &e) * 0x1000000U;
1396
1397 r = m & 0x80000000U;
1398
1399 if (r)
1400 m = -m;
1401
1402 if (e <= -126)
1403 {
1404 m &= 0xffffffU;
1405 m >>= (-125 - e);
1406 e = -126;
1407 }
1408
1409 r |= (e + 126) << 23;
1410 r |= m & 0x7fffffU;
1411 #endif
1412
1413 return r;
1414 }
1415
1416 /* converts an ieee single/binary32 to a float */
1417 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1418 ecb_function_ ecb_const float
1419 ecb_binary32_to_float (uint32_t x)
1420 {
1421 float r;
1422
1423 #if ECB_STDFP
1424 memcpy (&r, &x, 4);
1425 #else
1426 /* emulation, only works for normals and subnormals and +0 */
1427 int neg = x >> 31;
1428 int e = (x >> 23) & 0xffU;
1429
1430 x &= 0x7fffffU;
1431
1432 if (e)
1433 x |= 0x800000U;
1434 else
1435 e = 1;
1436
1437 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1438 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1439
1440 r = neg ? -r : r;
1441 #endif
1442
1443 return r;
1444 }
1445
1446 /* convert a double to ieee double/binary64 */
1447 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1448 ecb_function_ ecb_const uint64_t
1449 ecb_double_to_binary64 (double x)
1450 {
1451 uint64_t r;
1452
1453 #if ECB_STDFP
1454 memcpy (&r, &x, 8);
1455 #else
1456 /* slow emulation, works for anything but -0 */
1457 uint64_t m;
1458 int e;
1459
1460 if (x == 0e0 ) return 0x0000000000000000U;
1461 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1462 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1463 if (x != x ) return 0X7ff7ffffffffffffU;
1464
1465 m = frexp (x, &e) * 0x20000000000000U;
1466
1467 r = m & 0x8000000000000000;;
1468
1469 if (r)
1470 m = -m;
1471
1472 if (e <= -1022)
1473 {
1474 m &= 0x1fffffffffffffU;
1475 m >>= (-1021 - e);
1476 e = -1022;
1477 }
1478
1479 r |= ((uint64_t)(e + 1022)) << 52;
1480 r |= m & 0xfffffffffffffU;
1481 #endif
1482
1483 return r;
1484 }
1485
1486 /* converts an ieee double/binary64 to a double */
1487 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1488 ecb_function_ ecb_const double
1489 ecb_binary64_to_double (uint64_t x)
1490 {
1491 double r;
1492
1493 #if ECB_STDFP
1494 memcpy (&r, &x, 8);
1495 #else
1496 /* emulation, only works for normals and subnormals and +0 */
1497 int neg = x >> 63;
1498 int e = (x >> 52) & 0x7ffU;
1499
1500 x &= 0xfffffffffffffU;
1501
1502 if (e)
1503 x |= 0x10000000000000U;
1504 else
1505 e = 1;
1506
1507 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1508 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1509
1510 r = neg ? -r : r;
1511 #endif
1512
1513 return r;
1514 }
1515
1516 /* convert a float to ieee half/binary16 */
1517 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1518 ecb_function_ ecb_const uint16_t
1519 ecb_float_to_binary16 (float x)
1520 {
1521 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1522 }
1523
1524 /* convert an ieee half/binary16 to float */
1525 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1526 ecb_function_ ecb_const float
1527 ecb_binary16_to_float (uint16_t x)
1528 {
1529 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1530 }
1531
1532#endif
1533
1534#endif
1535
1536/* ECB.H END */
1537
1538#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1539/* if your architecture doesn't need memory fences, e.g. because it is
1540 * single-cpu/core, or if you use libev in a project that doesn't use libev
1541 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
1542 * libev, in which cases the memory fences become nops.
1543 * alternatively, you can remove this #error and link against libpthread,
1544 * which will then provide the memory fences.
1545 */
1546# error "memory fences not defined for your architecture, please report"
1547#endif
1548
1549#ifndef ECB_MEMORY_FENCE
1550# define ECB_MEMORY_FENCE do { } while (0)
1551# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1552# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1553#endif
1554
1555#define expect_false(cond) ecb_expect_false (cond)
1556#define expect_true(cond) ecb_expect_true (cond)
1557#define noinline ecb_noinline
1558
1559#define inline_size ecb_inline
1560
1561#if EV_FEATURE_CODE
393# define inline_speed static inline 1562# define inline_speed ecb_inline
1563#else
1564# define inline_speed noinline static
394#endif 1565#endif
395 1566
396#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1567#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
1568
1569#if EV_MINPRI == EV_MAXPRI
1570# define ABSPRI(w) (((W)w), 0)
1571#else
397#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1572# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
1573#endif
398 1574
399#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1575#define EMPTY /* required for microsofts broken pseudo-c compiler */
400#define EMPTY2(a,b) /* used to suppress some warnings */
401 1576
402typedef ev_watcher *W; 1577typedef ev_watcher *W;
403typedef ev_watcher_list *WL; 1578typedef ev_watcher_list *WL;
404typedef ev_watcher_time *WT; 1579typedef ev_watcher_time *WT;
405 1580
406#define ev_active(w) ((W)(w))->active 1581#define ev_active(w) ((W)(w))->active
407#define ev_at(w) ((WT)(w))->at 1582#define ev_at(w) ((WT)(w))->at
408 1583
409#if EV_USE_REALTIME 1584#if EV_USE_REALTIME
410/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 1585/* 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 */ 1586/* giving it a reasonably high chance of working on typical architectures */
412static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 1587static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
413#endif 1588#endif
414 1589
415#if EV_USE_MONOTONIC 1590#if EV_USE_MONOTONIC
416static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 1591static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
417#endif 1592#endif
418 1593
1594#ifndef EV_FD_TO_WIN32_HANDLE
1595# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
1596#endif
1597#ifndef EV_WIN32_HANDLE_TO_FD
1598# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
1599#endif
1600#ifndef EV_WIN32_CLOSE_FD
1601# define EV_WIN32_CLOSE_FD(fd) close (fd)
1602#endif
1603
419#ifdef _WIN32 1604#ifdef _WIN32
420# include "ev_win32.c" 1605# include "ev_win32.c"
421#endif 1606#endif
422 1607
423/*****************************************************************************/ 1608/*****************************************************************************/
424 1609
1610#if EV_USE_LINUXAIO
1611# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
1612#endif
1613
1614/* define a suitable floor function (only used by periodics atm) */
1615
1616#if EV_USE_FLOOR
1617# include <math.h>
1618# define ev_floor(v) floor (v)
1619#else
1620
1621#include <float.h>
1622
1623/* a floor() replacement function, should be independent of ev_tstamp type */
1624noinline
1625static ev_tstamp
1626ev_floor (ev_tstamp v)
1627{
1628 /* the choice of shift factor is not terribly important */
1629#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1630 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1631#else
1632 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1633#endif
1634
1635 /* argument too large for an unsigned long? */
1636 if (expect_false (v >= shift))
1637 {
1638 ev_tstamp f;
1639
1640 if (v == v - 1.)
1641 return v; /* very large number */
1642
1643 f = shift * ev_floor (v * (1. / shift));
1644 return f + ev_floor (v - f);
1645 }
1646
1647 /* special treatment for negative args? */
1648 if (expect_false (v < 0.))
1649 {
1650 ev_tstamp f = -ev_floor (-v);
1651
1652 return f - (f == v ? 0 : 1);
1653 }
1654
1655 /* fits into an unsigned long */
1656 return (unsigned long)v;
1657}
1658
1659#endif
1660
1661/*****************************************************************************/
1662
1663#ifdef __linux
1664# include <sys/utsname.h>
1665#endif
1666
1667noinline ecb_cold
1668static unsigned int
1669ev_linux_version (void)
1670{
1671#ifdef __linux
1672 unsigned int v = 0;
1673 struct utsname buf;
1674 int i;
1675 char *p = buf.release;
1676
1677 if (uname (&buf))
1678 return 0;
1679
1680 for (i = 3+1; --i; )
1681 {
1682 unsigned int c = 0;
1683
1684 for (;;)
1685 {
1686 if (*p >= '0' && *p <= '9')
1687 c = c * 10 + *p++ - '0';
1688 else
1689 {
1690 p += *p == '.';
1691 break;
1692 }
1693 }
1694
1695 v = (v << 8) | c;
1696 }
1697
1698 return v;
1699#else
1700 return 0;
1701#endif
1702}
1703
1704/*****************************************************************************/
1705
1706#if EV_AVOID_STDIO
1707noinline ecb_cold
1708static void
1709ev_printerr (const char *msg)
1710{
1711 write (STDERR_FILENO, msg, strlen (msg));
1712}
1713#endif
1714
425static void (*syserr_cb)(const char *msg); 1715static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
426 1716
1717ecb_cold
427void 1718void
428ev_set_syserr_cb (void (*cb)(const char *msg)) 1719ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
429{ 1720{
430 syserr_cb = cb; 1721 syserr_cb = cb;
431} 1722}
432 1723
433static void noinline 1724noinline ecb_cold
1725static void
434ev_syserr (const char *msg) 1726ev_syserr (const char *msg)
435{ 1727{
436 if (!msg) 1728 if (!msg)
437 msg = "(libev) system error"; 1729 msg = "(libev) system error";
438 1730
439 if (syserr_cb) 1731 if (syserr_cb)
440 syserr_cb (msg); 1732 syserr_cb (msg);
441 else 1733 else
442 { 1734 {
1735#if EV_AVOID_STDIO
1736 ev_printerr (msg);
1737 ev_printerr (": ");
1738 ev_printerr (strerror (errno));
1739 ev_printerr ("\n");
1740#else
443 perror (msg); 1741 perror (msg);
1742#endif
444 abort (); 1743 abort ();
445 } 1744 }
446} 1745}
447 1746
448static void * 1747static void *
449ev_realloc_emul (void *ptr, long size) 1748ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
450{ 1749{
451 /* some systems, notably openbsd and darwin, fail to properly 1750 /* some systems, notably openbsd and darwin, fail to properly
452 * implement realloc (x, 0) (as required by both ansi c-98 and 1751 * implement realloc (x, 0) (as required by both ansi c-89 and
453 * the single unix specification, so work around them here. 1752 * the single unix specification, so work around them here.
1753 * recently, also (at least) fedora and debian started breaking it,
1754 * despite documenting it otherwise.
454 */ 1755 */
455 1756
456 if (size) 1757 if (size)
457 return realloc (ptr, size); 1758 return realloc (ptr, size);
458 1759
459 free (ptr); 1760 free (ptr);
460 return 0; 1761 return 0;
461} 1762}
462 1763
463static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1764static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
464 1765
1766ecb_cold
465void 1767void
466ev_set_allocator (void *(*cb)(void *ptr, long size)) 1768ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
467{ 1769{
468 alloc = cb; 1770 alloc = cb;
469} 1771}
470 1772
471inline_speed void * 1773inline_speed void *
… …
473{ 1775{
474 ptr = alloc (ptr, size); 1776 ptr = alloc (ptr, size);
475 1777
476 if (!ptr && size) 1778 if (!ptr && size)
477 { 1779 {
1780#if EV_AVOID_STDIO
1781 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1782#else
478 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1783 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1784#endif
479 abort (); 1785 abort ();
480 } 1786 }
481 1787
482 return ptr; 1788 return ptr;
483} 1789}
… …
485#define ev_malloc(size) ev_realloc (0, (size)) 1791#define ev_malloc(size) ev_realloc (0, (size))
486#define ev_free(ptr) ev_realloc ((ptr), 0) 1792#define ev_free(ptr) ev_realloc ((ptr), 0)
487 1793
488/*****************************************************************************/ 1794/*****************************************************************************/
489 1795
1796/* set in reify when reification needed */
1797#define EV_ANFD_REIFY 1
1798
490/* file descriptor info structure */ 1799/* file descriptor info structure */
491typedef struct 1800typedef struct
492{ 1801{
493 WL head; 1802 WL head;
494 unsigned char events; /* the events watched for */ 1803 unsigned char events; /* the events watched for */
495 unsigned char reify; /* flag set when this ANFD needs reification */ 1804 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 */ 1805 unsigned char emask; /* some backends store the actual kernel mask in here */
497 unsigned char unused; 1806 unsigned char unused;
498#if EV_USE_EPOLL 1807#if EV_USE_EPOLL
499 unsigned int egen; /* generation counter to counter epoll bugs */ 1808 unsigned int egen; /* generation counter to counter epoll bugs */
500#endif 1809#endif
501#if EV_SELECT_IS_WINSOCKET 1810#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
502 SOCKET handle; 1811 SOCKET handle;
1812#endif
1813#if EV_USE_IOCP
1814 OVERLAPPED or, ow;
503#endif 1815#endif
504} ANFD; 1816} ANFD;
505 1817
506/* stores the pending event set for a given watcher */ 1818/* stores the pending event set for a given watcher */
507typedef struct 1819typedef struct
… …
549 #undef VAR 1861 #undef VAR
550 }; 1862 };
551 #include "ev_wrap.h" 1863 #include "ev_wrap.h"
552 1864
553 static struct ev_loop default_loop_struct; 1865 static struct ev_loop default_loop_struct;
554 struct ev_loop *ev_default_loop_ptr; 1866 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
555 1867
556#else 1868#else
557 1869
558 ev_tstamp ev_rt_now; 1870 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; 1871 #define VAR(name,decl) static decl;
560 #include "ev_vars.h" 1872 #include "ev_vars.h"
561 #undef VAR 1873 #undef VAR
562 1874
563 static int ev_default_loop_ptr; 1875 static int ev_default_loop_ptr;
564 1876
565#endif 1877#endif
566 1878
1879#if EV_FEATURE_API
1880# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
1881# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
1882# define EV_INVOKE_PENDING invoke_cb (EV_A)
1883#else
1884# define EV_RELEASE_CB (void)0
1885# define EV_ACQUIRE_CB (void)0
1886# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
1887#endif
1888
1889#define EVBREAK_RECURSE 0x80
1890
567/*****************************************************************************/ 1891/*****************************************************************************/
568 1892
569#ifndef EV_HAVE_EV_TIME 1893#ifndef EV_HAVE_EV_TIME
570ev_tstamp 1894ev_tstamp
571ev_time (void) 1895ev_time (void) EV_NOEXCEPT
572{ 1896{
573#if EV_USE_REALTIME 1897#if EV_USE_REALTIME
574 if (expect_true (have_realtime)) 1898 if (expect_true (have_realtime))
575 { 1899 {
576 struct timespec ts; 1900 struct timespec ts;
… …
600 return ev_time (); 1924 return ev_time ();
601} 1925}
602 1926
603#if EV_MULTIPLICITY 1927#if EV_MULTIPLICITY
604ev_tstamp 1928ev_tstamp
605ev_now (EV_P) 1929ev_now (EV_P) EV_NOEXCEPT
606{ 1930{
607 return ev_rt_now; 1931 return ev_rt_now;
608} 1932}
609#endif 1933#endif
610 1934
611void 1935void
612ev_sleep (ev_tstamp delay) 1936ev_sleep (ev_tstamp delay) EV_NOEXCEPT
613{ 1937{
614 if (delay > 0.) 1938 if (delay > 0.)
615 { 1939 {
616#if EV_USE_NANOSLEEP 1940#if EV_USE_NANOSLEEP
617 struct timespec ts; 1941 struct timespec ts;
618 1942
619 ts.tv_sec = (time_t)delay; 1943 EV_TS_SET (ts, delay);
620 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
621
622 nanosleep (&ts, 0); 1944 nanosleep (&ts, 0);
623#elif defined(_WIN32) 1945#elif defined _WIN32
1946 /* maybe this should round up, as ms is very low resolution */
1947 /* compared to select (µs) or nanosleep (ns) */
624 Sleep ((unsigned long)(delay * 1e3)); 1948 Sleep ((unsigned long)(delay * 1e3));
625#else 1949#else
626 struct timeval tv; 1950 struct timeval tv;
627 1951
628 tv.tv_sec = (time_t)delay;
629 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
630
631 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1952 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
632 /* somehting nto guaranteed by newer posix versions, but guaranteed */ 1953 /* something not guaranteed by newer posix versions, but guaranteed */
633 /* by older ones */ 1954 /* by older ones */
1955 EV_TV_SET (tv, delay);
634 select (0, 0, 0, 0, &tv); 1956 select (0, 0, 0, 0, &tv);
635#endif 1957#endif
636 } 1958 }
637} 1959}
638 1960
639/*****************************************************************************/ 1961/*****************************************************************************/
640 1962
641#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1963#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
642 1964
643/* find a suitable new size for the given array, */ 1965/* find a suitable new size for the given array, */
644/* hopefully by rounding to a ncie-to-malloc size */ 1966/* hopefully by rounding to a nice-to-malloc size */
645inline_size int 1967inline_size int
646array_nextsize (int elem, int cur, int cnt) 1968array_nextsize (int elem, int cur, int cnt)
647{ 1969{
648 int ncur = cur + 1; 1970 int ncur = cur + 1;
649 1971
650 do 1972 do
651 ncur <<= 1; 1973 ncur <<= 1;
652 while (cnt > ncur); 1974 while (cnt > ncur);
653 1975
654 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1976 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
655 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1977 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
656 { 1978 {
657 ncur *= elem; 1979 ncur *= elem;
658 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1980 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
659 ncur = ncur - sizeof (void *) * 4; 1981 ncur = ncur - sizeof (void *) * 4;
… …
661 } 1983 }
662 1984
663 return ncur; 1985 return ncur;
664} 1986}
665 1987
666static noinline void * 1988noinline ecb_cold
1989static void *
667array_realloc (int elem, void *base, int *cur, int cnt) 1990array_realloc (int elem, void *base, int *cur, int cnt)
668{ 1991{
669 *cur = array_nextsize (elem, *cur, cnt); 1992 *cur = array_nextsize (elem, *cur, cnt);
670 return ev_realloc (base, elem * *cur); 1993 return ev_realloc (base, elem * *cur);
671} 1994}
672 1995
1996#define array_needsize_noinit(base,offset,count)
1997
673#define array_init_zero(base,count) \ 1998#define array_needsize_zerofill(base,offset,count) \
674 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1999 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
675 2000
676#define array_needsize(type,base,cur,cnt,init) \ 2001#define array_needsize(type,base,cur,cnt,init) \
677 if (expect_false ((cnt) > (cur))) \ 2002 if (expect_false ((cnt) > (cur))) \
678 { \ 2003 { \
679 int ocur_ = (cur); \ 2004 ecb_unused int ocur_ = (cur); \
680 (base) = (type *)array_realloc \ 2005 (base) = (type *)array_realloc \
681 (sizeof (type), (base), &(cur), (cnt)); \ 2006 (sizeof (type), (base), &(cur), (cnt)); \
682 init ((base) + (ocur_), (cur) - ocur_); \ 2007 init ((base), ocur_, ((cur) - ocur_)); \
683 } 2008 }
684 2009
685#if 0 2010#if 0
686#define array_slim(type,stem) \ 2011#define array_slim(type,stem) \
687 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2012 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
… …
696 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 2021 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
697 2022
698/*****************************************************************************/ 2023/*****************************************************************************/
699 2024
700/* dummy callback for pending events */ 2025/* dummy callback for pending events */
701static void noinline 2026noinline
2027static void
702pendingcb (EV_P_ ev_prepare *w, int revents) 2028pendingcb (EV_P_ ev_prepare *w, int revents)
703{ 2029{
704} 2030}
705 2031
706void noinline 2032noinline
2033void
707ev_feed_event (EV_P_ void *w, int revents) 2034ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
708{ 2035{
709 W w_ = (W)w; 2036 W w_ = (W)w;
710 int pri = ABSPRI (w_); 2037 int pri = ABSPRI (w_);
711 2038
712 if (expect_false (w_->pending)) 2039 if (expect_false (w_->pending))
713 pendings [pri][w_->pending - 1].events |= revents; 2040 pendings [pri][w_->pending - 1].events |= revents;
714 else 2041 else
715 { 2042 {
716 w_->pending = ++pendingcnt [pri]; 2043 w_->pending = ++pendingcnt [pri];
717 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2044 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
718 pendings [pri][w_->pending - 1].w = w_; 2045 pendings [pri][w_->pending - 1].w = w_;
719 pendings [pri][w_->pending - 1].events = revents; 2046 pendings [pri][w_->pending - 1].events = revents;
720 } 2047 }
2048
2049 pendingpri = NUMPRI - 1;
721} 2050}
722 2051
723inline_speed void 2052inline_speed void
724feed_reverse (EV_P_ W w) 2053feed_reverse (EV_P_ W w)
725{ 2054{
726 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2055 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
727 rfeeds [rfeedcnt++] = w; 2056 rfeeds [rfeedcnt++] = w;
728} 2057}
729 2058
730inline_size void 2059inline_size void
731feed_reverse_done (EV_P_ int revents) 2060feed_reverse_done (EV_P_ int revents)
… …
745} 2074}
746 2075
747/*****************************************************************************/ 2076/*****************************************************************************/
748 2077
749inline_speed void 2078inline_speed void
750fd_event (EV_P_ int fd, int revents) 2079fd_event_nocheck (EV_P_ int fd, int revents)
751{ 2080{
752 ANFD *anfd = anfds + fd; 2081 ANFD *anfd = anfds + fd;
753 ev_io *w; 2082 ev_io *w;
754 2083
755 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2084 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
759 if (ev) 2088 if (ev)
760 ev_feed_event (EV_A_ (W)w, ev); 2089 ev_feed_event (EV_A_ (W)w, ev);
761 } 2090 }
762} 2091}
763 2092
764void 2093/* do not submit kernel events for fds that have reify set */
2094/* because that means they changed while we were polling for new events */
2095inline_speed void
765ev_feed_fd_event (EV_P_ int fd, int revents) 2096fd_event (EV_P_ int fd, int revents)
2097{
2098 ANFD *anfd = anfds + fd;
2099
2100 if (expect_true (!anfd->reify))
2101 fd_event_nocheck (EV_A_ fd, revents);
2102}
2103
2104void
2105ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
766{ 2106{
767 if (fd >= 0 && fd < anfdmax) 2107 if (fd >= 0 && fd < anfdmax)
768 fd_event (EV_A_ fd, revents); 2108 fd_event_nocheck (EV_A_ fd, revents);
769} 2109}
770 2110
771/* make sure the external fd watch events are in-sync */ 2111/* make sure the external fd watch events are in-sync */
772/* with the kernel/libev internal state */ 2112/* with the kernel/libev internal state */
773inline_size void 2113inline_size void
774fd_reify (EV_P) 2114fd_reify (EV_P)
775{ 2115{
776 int i; 2116 int i;
777 2117
2118#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
2119 for (i = 0; i < fdchangecnt; ++i)
2120 {
2121 int fd = fdchanges [i];
2122 ANFD *anfd = anfds + fd;
2123
2124 if (anfd->reify & EV__IOFDSET && anfd->head)
2125 {
2126 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
2127
2128 if (handle != anfd->handle)
2129 {
2130 unsigned long arg;
2131
2132 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
2133
2134 /* handle changed, but fd didn't - we need to do it in two steps */
2135 backend_modify (EV_A_ fd, anfd->events, 0);
2136 anfd->events = 0;
2137 anfd->handle = handle;
2138 }
2139 }
2140 }
2141#endif
2142
778 for (i = 0; i < fdchangecnt; ++i) 2143 for (i = 0; i < fdchangecnt; ++i)
779 { 2144 {
780 int fd = fdchanges [i]; 2145 int fd = fdchanges [i];
781 ANFD *anfd = anfds + fd; 2146 ANFD *anfd = anfds + fd;
782 ev_io *w; 2147 ev_io *w;
783 2148
784 unsigned char events = 0; 2149 unsigned char o_events = anfd->events;
2150 unsigned char o_reify = anfd->reify;
785 2151
786 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2152 anfd->reify = 0;
787 events |= (unsigned char)w->events;
788 2153
789#if EV_SELECT_IS_WINSOCKET 2154 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
790 if (events)
791 { 2155 {
792 unsigned long arg; 2156 anfd->events = 0;
793 #ifdef EV_FD_TO_WIN32_HANDLE 2157
794 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 2158 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
795 #else 2159 anfd->events |= (unsigned char)w->events;
796 anfd->handle = _get_osfhandle (fd); 2160
797 #endif 2161 if (o_events != anfd->events)
798 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 2162 o_reify = EV__IOFDSET; /* actually |= */
799 } 2163 }
800#endif
801 2164
802 { 2165 if (o_reify & EV__IOFDSET)
803 unsigned char o_events = anfd->events;
804 unsigned char o_reify = anfd->reify;
805
806 anfd->reify = 0;
807 anfd->events = events;
808
809 if (o_events != events || o_reify & EV__IOFDSET)
810 backend_modify (EV_A_ fd, o_events, events); 2166 backend_modify (EV_A_ fd, o_events, anfd->events);
811 }
812 } 2167 }
813 2168
814 fdchangecnt = 0; 2169 fdchangecnt = 0;
815} 2170}
816 2171
817/* something about the given fd changed */ 2172/* something about the given fd changed */
818inline_size void 2173inline_size
2174void
819fd_change (EV_P_ int fd, int flags) 2175fd_change (EV_P_ int fd, int flags)
820{ 2176{
821 unsigned char reify = anfds [fd].reify; 2177 unsigned char reify = anfds [fd].reify;
822 anfds [fd].reify |= flags; 2178 anfds [fd].reify |= flags;
823 2179
824 if (expect_true (!reify)) 2180 if (expect_true (!reify))
825 { 2181 {
826 ++fdchangecnt; 2182 ++fdchangecnt;
827 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2183 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
828 fdchanges [fdchangecnt - 1] = fd; 2184 fdchanges [fdchangecnt - 1] = fd;
829 } 2185 }
830} 2186}
831 2187
832/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2188/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
833inline_speed void 2189inline_speed ecb_cold void
834fd_kill (EV_P_ int fd) 2190fd_kill (EV_P_ int fd)
835{ 2191{
836 ev_io *w; 2192 ev_io *w;
837 2193
838 while ((w = (ev_io *)anfds [fd].head)) 2194 while ((w = (ev_io *)anfds [fd].head))
… …
840 ev_io_stop (EV_A_ w); 2196 ev_io_stop (EV_A_ w);
841 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2197 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
842 } 2198 }
843} 2199}
844 2200
845/* check whether the given fd is atcually valid, for error recovery */ 2201/* check whether the given fd is actually valid, for error recovery */
846inline_size int 2202inline_size ecb_cold int
847fd_valid (int fd) 2203fd_valid (int fd)
848{ 2204{
849#ifdef _WIN32 2205#ifdef _WIN32
850 return _get_osfhandle (fd) != -1; 2206 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
851#else 2207#else
852 return fcntl (fd, F_GETFD) != -1; 2208 return fcntl (fd, F_GETFD) != -1;
853#endif 2209#endif
854} 2210}
855 2211
856/* called on EBADF to verify fds */ 2212/* called on EBADF to verify fds */
857static void noinline 2213noinline ecb_cold
2214static void
858fd_ebadf (EV_P) 2215fd_ebadf (EV_P)
859{ 2216{
860 int fd; 2217 int fd;
861 2218
862 for (fd = 0; fd < anfdmax; ++fd) 2219 for (fd = 0; fd < anfdmax; ++fd)
… …
864 if (!fd_valid (fd) && errno == EBADF) 2221 if (!fd_valid (fd) && errno == EBADF)
865 fd_kill (EV_A_ fd); 2222 fd_kill (EV_A_ fd);
866} 2223}
867 2224
868/* called on ENOMEM in select/poll to kill some fds and retry */ 2225/* called on ENOMEM in select/poll to kill some fds and retry */
869static void noinline 2226noinline ecb_cold
2227static void
870fd_enomem (EV_P) 2228fd_enomem (EV_P)
871{ 2229{
872 int fd; 2230 int fd;
873 2231
874 for (fd = anfdmax; fd--; ) 2232 for (fd = anfdmax; fd--; )
875 if (anfds [fd].events) 2233 if (anfds [fd].events)
876 { 2234 {
877 fd_kill (EV_A_ fd); 2235 fd_kill (EV_A_ fd);
878 return; 2236 break;
879 } 2237 }
880} 2238}
881 2239
882/* usually called after fork if backend needs to re-arm all fds from scratch */ 2240/* usually called after fork if backend needs to re-arm all fds from scratch */
883static void noinline 2241noinline
2242static void
884fd_rearm_all (EV_P) 2243fd_rearm_all (EV_P)
885{ 2244{
886 int fd; 2245 int fd;
887 2246
888 for (fd = 0; fd < anfdmax; ++fd) 2247 for (fd = 0; fd < anfdmax; ++fd)
889 if (anfds [fd].events) 2248 if (anfds [fd].events)
890 { 2249 {
891 anfds [fd].events = 0; 2250 anfds [fd].events = 0;
892 anfds [fd].emask = 0; 2251 anfds [fd].emask = 0;
893 fd_change (EV_A_ fd, EV__IOFDSET | 1); 2252 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
894 } 2253 }
895} 2254}
896 2255
2256/* used to prepare libev internal fd's */
2257/* this is not fork-safe */
2258inline_speed void
2259fd_intern (int fd)
2260{
2261#ifdef _WIN32
2262 unsigned long arg = 1;
2263 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
2264#else
2265 fcntl (fd, F_SETFD, FD_CLOEXEC);
2266 fcntl (fd, F_SETFL, O_NONBLOCK);
2267#endif
2268}
2269
897/*****************************************************************************/ 2270/*****************************************************************************/
898 2271
899/* 2272/*
900 * the heap functions want a real array index. array index 0 uis guaranteed to not 2273 * the heap functions want a real array index. array index 0 is guaranteed to not
901 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 2274 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
902 * the branching factor of the d-tree. 2275 * the branching factor of the d-tree.
903 */ 2276 */
904 2277
905/* 2278/*
… …
973 2346
974 for (;;) 2347 for (;;)
975 { 2348 {
976 int c = k << 1; 2349 int c = k << 1;
977 2350
978 if (c > N + HEAP0 - 1) 2351 if (c >= N + HEAP0)
979 break; 2352 break;
980 2353
981 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 2354 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
982 ? 1 : 0; 2355 ? 1 : 0;
983 2356
… …
1019 2392
1020/* move an element suitably so it is in a correct place */ 2393/* move an element suitably so it is in a correct place */
1021inline_size void 2394inline_size void
1022adjustheap (ANHE *heap, int N, int k) 2395adjustheap (ANHE *heap, int N, int k)
1023{ 2396{
1024 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 2397 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1025 upheap (heap, k); 2398 upheap (heap, k);
1026 else 2399 else
1027 downheap (heap, N, k); 2400 downheap (heap, N, k);
1028} 2401}
1029 2402
… …
1042/*****************************************************************************/ 2415/*****************************************************************************/
1043 2416
1044/* associate signal watchers to a signal signal */ 2417/* associate signal watchers to a signal signal */
1045typedef struct 2418typedef struct
1046{ 2419{
2420 EV_ATOMIC_T pending;
2421#if EV_MULTIPLICITY
2422 EV_P;
2423#endif
1047 WL head; 2424 WL head;
1048 EV_ATOMIC_T gotsig;
1049} ANSIG; 2425} ANSIG;
1050 2426
1051static ANSIG *signals; 2427static ANSIG signals [EV_NSIG - 1];
1052static int signalmax;
1053
1054static EV_ATOMIC_T gotsig;
1055 2428
1056/*****************************************************************************/ 2429/*****************************************************************************/
1057 2430
1058/* used to prepare libev internal fd's */ 2431#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1059/* this is not fork-safe */ 2432
2433noinline ecb_cold
2434static void
2435evpipe_init (EV_P)
2436{
2437 if (!ev_is_active (&pipe_w))
2438 {
2439 int fds [2];
2440
2441# if EV_USE_EVENTFD
2442 fds [0] = -1;
2443 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
2444 if (fds [1] < 0 && errno == EINVAL)
2445 fds [1] = eventfd (0, 0);
2446
2447 if (fds [1] < 0)
2448# endif
2449 {
2450 while (pipe (fds))
2451 ev_syserr ("(libev) error creating signal/async pipe");
2452
2453 fd_intern (fds [0]);
2454 }
2455
2456 evpipe [0] = fds [0];
2457
2458 if (evpipe [1] < 0)
2459 evpipe [1] = fds [1]; /* first call, set write fd */
2460 else
2461 {
2462 /* on subsequent calls, do not change evpipe [1] */
2463 /* so that evpipe_write can always rely on its value. */
2464 /* this branch does not do anything sensible on windows, */
2465 /* so must not be executed on windows */
2466
2467 dup2 (fds [1], evpipe [1]);
2468 close (fds [1]);
2469 }
2470
2471 fd_intern (evpipe [1]);
2472
2473 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2474 ev_io_start (EV_A_ &pipe_w);
2475 ev_unref (EV_A); /* watcher should not keep loop alive */
2476 }
2477}
2478
1060inline_speed void 2479inline_speed void
1061fd_intern (int fd) 2480evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1062{ 2481{
1063#ifdef _WIN32 2482 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1064 unsigned long arg = 1;
1065 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1066#else
1067 fcntl (fd, F_SETFD, FD_CLOEXEC);
1068 fcntl (fd, F_SETFL, O_NONBLOCK);
1069#endif
1070}
1071 2483
1072static void noinline 2484 if (expect_true (*flag))
1073evpipe_init (EV_P) 2485 return;
1074{ 2486
1075 if (!ev_is_active (&pipe_w)) 2487 *flag = 1;
2488 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2489
2490 pipe_write_skipped = 1;
2491
2492 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2493
2494 if (pipe_write_wanted)
1076 { 2495 {
2496 int old_errno;
2497
2498 pipe_write_skipped = 0;
2499 ECB_MEMORY_FENCE_RELEASE;
2500
2501 old_errno = errno; /* save errno because write will clobber it */
2502
1077#if EV_USE_EVENTFD 2503#if EV_USE_EVENTFD
1078 if ((evfd = eventfd (0, 0)) >= 0) 2504 if (evpipe [0] < 0)
1079 { 2505 {
1080 evpipe [0] = -1; 2506 uint64_t counter = 1;
1081 fd_intern (evfd); 2507 write (evpipe [1], &counter, sizeof (uint64_t));
1082 ev_io_set (&pipe_w, evfd, EV_READ);
1083 } 2508 }
1084 else 2509 else
1085#endif 2510#endif
1086 { 2511 {
1087 while (pipe (evpipe)) 2512#ifdef _WIN32
1088 ev_syserr ("(libev) error creating signal/async pipe"); 2513 WSABUF buf;
1089 2514 DWORD sent;
1090 fd_intern (evpipe [0]); 2515 buf.buf = (char *)&buf;
1091 fd_intern (evpipe [1]); 2516 buf.len = 1;
1092 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2517 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2518#else
2519 write (evpipe [1], &(evpipe [1]), 1);
2520#endif
1093 } 2521 }
1094
1095 ev_io_start (EV_A_ &pipe_w);
1096 ev_unref (EV_A); /* watcher should not keep loop alive */
1097 }
1098}
1099
1100inline_size void
1101evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1102{
1103 if (!*flag)
1104 {
1105 int old_errno = errno; /* save errno because write might clobber it */
1106
1107 *flag = 1;
1108
1109#if EV_USE_EVENTFD
1110 if (evfd >= 0)
1111 {
1112 uint64_t counter = 1;
1113 write (evfd, &counter, sizeof (uint64_t));
1114 }
1115 else
1116#endif
1117 write (evpipe [1], &old_errno, 1);
1118 2522
1119 errno = old_errno; 2523 errno = old_errno;
1120 } 2524 }
1121} 2525}
1122 2526
1123/* called whenever the libev signal pipe */ 2527/* called whenever the libev signal pipe */
1124/* got some events (signal, async) */ 2528/* got some events (signal, async) */
1125static void 2529static void
1126pipecb (EV_P_ ev_io *iow, int revents) 2530pipecb (EV_P_ ev_io *iow, int revents)
1127{ 2531{
2532 int i;
2533
2534 if (revents & EV_READ)
2535 {
1128#if EV_USE_EVENTFD 2536#if EV_USE_EVENTFD
1129 if (evfd >= 0) 2537 if (evpipe [0] < 0)
1130 { 2538 {
1131 uint64_t counter; 2539 uint64_t counter;
1132 read (evfd, &counter, sizeof (uint64_t)); 2540 read (evpipe [1], &counter, sizeof (uint64_t));
1133 } 2541 }
1134 else 2542 else
1135#endif 2543#endif
1136 { 2544 {
1137 char dummy; 2545 char dummy[4];
2546#ifdef _WIN32
2547 WSABUF buf;
2548 DWORD recvd;
2549 DWORD flags = 0;
2550 buf.buf = dummy;
2551 buf.len = sizeof (dummy);
2552 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2553#else
1138 read (evpipe [0], &dummy, 1); 2554 read (evpipe [0], &dummy, sizeof (dummy));
2555#endif
2556 }
2557 }
2558
2559 pipe_write_skipped = 0;
2560
2561 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2562
2563#if EV_SIGNAL_ENABLE
2564 if (sig_pending)
1139 } 2565 {
2566 sig_pending = 0;
1140 2567
1141 if (gotsig && ev_is_default_loop (EV_A)) 2568 ECB_MEMORY_FENCE;
1142 {
1143 int signum;
1144 gotsig = 0;
1145 2569
1146 for (signum = signalmax; signum--; ) 2570 for (i = EV_NSIG - 1; i--; )
1147 if (signals [signum].gotsig) 2571 if (expect_false (signals [i].pending))
1148 ev_feed_signal_event (EV_A_ signum + 1); 2572 ev_feed_signal_event (EV_A_ i + 1);
1149 } 2573 }
2574#endif
1150 2575
1151#if EV_ASYNC_ENABLE 2576#if EV_ASYNC_ENABLE
1152 if (gotasync) 2577 if (async_pending)
1153 { 2578 {
1154 int i; 2579 async_pending = 0;
1155 gotasync = 0; 2580
2581 ECB_MEMORY_FENCE;
1156 2582
1157 for (i = asynccnt; i--; ) 2583 for (i = asynccnt; i--; )
1158 if (asyncs [i]->sent) 2584 if (asyncs [i]->sent)
1159 { 2585 {
1160 asyncs [i]->sent = 0; 2586 asyncs [i]->sent = 0;
2587 ECB_MEMORY_FENCE_RELEASE;
1161 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2588 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1162 } 2589 }
1163 } 2590 }
1164#endif 2591#endif
1165} 2592}
1166 2593
1167/*****************************************************************************/ 2594/*****************************************************************************/
1168 2595
2596void
2597ev_feed_signal (int signum) EV_NOEXCEPT
2598{
2599#if EV_MULTIPLICITY
2600 EV_P;
2601 ECB_MEMORY_FENCE_ACQUIRE;
2602 EV_A = signals [signum - 1].loop;
2603
2604 if (!EV_A)
2605 return;
2606#endif
2607
2608 signals [signum - 1].pending = 1;
2609 evpipe_write (EV_A_ &sig_pending);
2610}
2611
1169static void 2612static void
1170ev_sighandler (int signum) 2613ev_sighandler (int signum)
1171{ 2614{
2615#ifdef _WIN32
2616 signal (signum, ev_sighandler);
2617#endif
2618
2619 ev_feed_signal (signum);
2620}
2621
2622noinline
2623void
2624ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
2625{
2626 WL w;
2627
2628 if (expect_false (signum <= 0 || signum >= EV_NSIG))
2629 return;
2630
2631 --signum;
2632
1172#if EV_MULTIPLICITY 2633#if EV_MULTIPLICITY
1173 struct ev_loop *loop = &default_loop_struct; 2634 /* it is permissible to try to feed a signal to the wrong loop */
1174#endif 2635 /* or, likely more useful, feeding a signal nobody is waiting for */
1175 2636
1176#if _WIN32 2637 if (expect_false (signals [signum].loop != EV_A))
1177 signal (signum, ev_sighandler);
1178#endif
1179
1180 signals [signum - 1].gotsig = 1;
1181 evpipe_write (EV_A_ &gotsig);
1182}
1183
1184void noinline
1185ev_feed_signal_event (EV_P_ int signum)
1186{
1187 WL w;
1188
1189#if EV_MULTIPLICITY
1190 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1191#endif
1192
1193 --signum;
1194
1195 if (signum < 0 || signum >= signalmax)
1196 return; 2638 return;
2639#endif
1197 2640
1198 signals [signum].gotsig = 0; 2641 signals [signum].pending = 0;
2642 ECB_MEMORY_FENCE_RELEASE;
1199 2643
1200 for (w = signals [signum].head; w; w = w->next) 2644 for (w = signals [signum].head; w; w = w->next)
1201 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2645 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1202} 2646}
1203 2647
2648#if EV_USE_SIGNALFD
2649static void
2650sigfdcb (EV_P_ ev_io *iow, int revents)
2651{
2652 struct signalfd_siginfo si[2], *sip; /* these structs are big */
2653
2654 for (;;)
2655 {
2656 ssize_t res = read (sigfd, si, sizeof (si));
2657
2658 /* not ISO-C, as res might be -1, but works with SuS */
2659 for (sip = si; (char *)sip < (char *)si + res; ++sip)
2660 ev_feed_signal_event (EV_A_ sip->ssi_signo);
2661
2662 if (res < (ssize_t)sizeof (si))
2663 break;
2664 }
2665}
2666#endif
2667
2668#endif
2669
1204/*****************************************************************************/ 2670/*****************************************************************************/
1205 2671
2672#if EV_CHILD_ENABLE
1206static WL childs [EV_PID_HASHSIZE]; 2673static WL childs [EV_PID_HASHSIZE];
1207
1208#ifndef _WIN32
1209 2674
1210static ev_signal childev; 2675static ev_signal childev;
1211 2676
1212#ifndef WIFCONTINUED 2677#ifndef WIFCONTINUED
1213# define WIFCONTINUED(status) 0 2678# define WIFCONTINUED(status) 0
… …
1218child_reap (EV_P_ int chain, int pid, int status) 2683child_reap (EV_P_ int chain, int pid, int status)
1219{ 2684{
1220 ev_child *w; 2685 ev_child *w;
1221 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2686 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1222 2687
1223 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2688 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1224 { 2689 {
1225 if ((w->pid == pid || !w->pid) 2690 if ((w->pid == pid || !w->pid)
1226 && (!traced || (w->flags & 1))) 2691 && (!traced || (w->flags & 1)))
1227 { 2692 {
1228 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2693 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1253 /* make sure we are called again until all children have been reaped */ 2718 /* make sure we are called again until all children have been reaped */
1254 /* we need to do it this way so that the callback gets called before we continue */ 2719 /* we need to do it this way so that the callback gets called before we continue */
1255 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2720 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1256 2721
1257 child_reap (EV_A_ pid, pid, status); 2722 child_reap (EV_A_ pid, pid, status);
1258 if (EV_PID_HASHSIZE > 1) 2723 if ((EV_PID_HASHSIZE) > 1)
1259 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2724 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1260} 2725}
1261 2726
1262#endif 2727#endif
1263 2728
1264/*****************************************************************************/ 2729/*****************************************************************************/
1265 2730
2731#if EV_USE_IOCP
2732# include "ev_iocp.c"
2733#endif
1266#if EV_USE_PORT 2734#if EV_USE_PORT
1267# include "ev_port.c" 2735# include "ev_port.c"
1268#endif 2736#endif
1269#if EV_USE_KQUEUE 2737#if EV_USE_KQUEUE
1270# include "ev_kqueue.c" 2738# include "ev_kqueue.c"
1271#endif 2739#endif
1272#if EV_USE_EPOLL 2740#if EV_USE_EPOLL
1273# include "ev_epoll.c" 2741# include "ev_epoll.c"
1274#endif 2742#endif
2743#if EV_USE_LINUXAIO
2744# include "ev_linuxaio.c"
2745#endif
1275#if EV_USE_POLL 2746#if EV_USE_POLL
1276# include "ev_poll.c" 2747# include "ev_poll.c"
1277#endif 2748#endif
1278#if EV_USE_SELECT 2749#if EV_USE_SELECT
1279# include "ev_select.c" 2750# include "ev_select.c"
1280#endif 2751#endif
1281 2752
1282int 2753ecb_cold int
1283ev_version_major (void) 2754ev_version_major (void) EV_NOEXCEPT
1284{ 2755{
1285 return EV_VERSION_MAJOR; 2756 return EV_VERSION_MAJOR;
1286} 2757}
1287 2758
1288int 2759ecb_cold int
1289ev_version_minor (void) 2760ev_version_minor (void) EV_NOEXCEPT
1290{ 2761{
1291 return EV_VERSION_MINOR; 2762 return EV_VERSION_MINOR;
1292} 2763}
1293 2764
1294/* return true if we are running with elevated privileges and should ignore env variables */ 2765/* return true if we are running with elevated privileges and should ignore env variables */
1295int inline_size 2766inline_size ecb_cold int
1296enable_secure (void) 2767enable_secure (void)
1297{ 2768{
1298#ifdef _WIN32 2769#ifdef _WIN32
1299 return 0; 2770 return 0;
1300#else 2771#else
1301 return getuid () != geteuid () 2772 return getuid () != geteuid ()
1302 || getgid () != getegid (); 2773 || getgid () != getegid ();
1303#endif 2774#endif
1304} 2775}
1305 2776
2777ecb_cold
1306unsigned int 2778unsigned int
1307ev_supported_backends (void) 2779ev_supported_backends (void) EV_NOEXCEPT
1308{ 2780{
1309 unsigned int flags = 0; 2781 unsigned int flags = 0;
1310 2782
1311 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2783 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1312 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2784 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
1313 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 2785 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2786 if (EV_USE_LINUXAIO) flags |= EVBACKEND_LINUXAIO;
1314 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 2787 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
1315 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2788 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
1316 2789
1317 return flags; 2790 return flags;
1318} 2791}
1319 2792
2793ecb_cold
1320unsigned int 2794unsigned int
1321ev_recommended_backends (void) 2795ev_recommended_backends (void) EV_NOEXCEPT
1322{ 2796{
1323 unsigned int flags = ev_supported_backends (); 2797 unsigned int flags = ev_supported_backends ();
1324 2798
1325#ifndef __NetBSD__ 2799#ifndef __NetBSD__
1326 /* kqueue is borked on everything but netbsd apparently */ 2800 /* kqueue is borked on everything but netbsd apparently */
… …
1330#ifdef __APPLE__ 2804#ifdef __APPLE__
1331 /* only select works correctly on that "unix-certified" platform */ 2805 /* only select works correctly on that "unix-certified" platform */
1332 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2806 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1333 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 2807 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1334#endif 2808#endif
2809#ifdef __FreeBSD__
2810 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2811#endif
2812
2813 /* TODO: linuxaio is very experimental */
2814#if !EV_RECOMMEND_LINUXAIO
2815 flags &= ~EVBACKEND_LINUXAIO;
2816#endif
1335 2817
1336 return flags; 2818 return flags;
1337} 2819}
1338 2820
2821ecb_cold
1339unsigned int 2822unsigned int
1340ev_embeddable_backends (void) 2823ev_embeddable_backends (void) EV_NOEXCEPT
1341{ 2824{
1342 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2825 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1343 2826
1344 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2827 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1345 /* please fix it and tell me how to detect the fix */ 2828 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1346 flags &= ~EVBACKEND_EPOLL; 2829 flags &= ~EVBACKEND_EPOLL;
1347 2830
1348 return flags; 2831 return flags;
1349} 2832}
1350 2833
1351unsigned int 2834unsigned int
1352ev_backend (EV_P) 2835ev_backend (EV_P) EV_NOEXCEPT
1353{ 2836{
1354 return backend; 2837 return backend;
1355} 2838}
1356 2839
2840#if EV_FEATURE_API
1357unsigned int 2841unsigned int
1358ev_loop_count (EV_P) 2842ev_iteration (EV_P) EV_NOEXCEPT
1359{ 2843{
1360 return loop_count; 2844 return loop_count;
1361} 2845}
1362 2846
2847unsigned int
2848ev_depth (EV_P) EV_NOEXCEPT
2849{
2850 return loop_depth;
2851}
2852
1363void 2853void
1364ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2854ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1365{ 2855{
1366 io_blocktime = interval; 2856 io_blocktime = interval;
1367} 2857}
1368 2858
1369void 2859void
1370ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2860ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1371{ 2861{
1372 timeout_blocktime = interval; 2862 timeout_blocktime = interval;
1373} 2863}
1374 2864
2865void
2866ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
2867{
2868 userdata = data;
2869}
2870
2871void *
2872ev_userdata (EV_P) EV_NOEXCEPT
2873{
2874 return userdata;
2875}
2876
2877void
2878ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
2879{
2880 invoke_cb = invoke_pending_cb;
2881}
2882
2883void
2884ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
2885{
2886 release_cb = release;
2887 acquire_cb = acquire;
2888}
2889#endif
2890
1375/* initialise a loop structure, must be zero-initialised */ 2891/* initialise a loop structure, must be zero-initialised */
1376static void noinline 2892noinline ecb_cold
2893static void
1377loop_init (EV_P_ unsigned int flags) 2894loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
1378{ 2895{
1379 if (!backend) 2896 if (!backend)
1380 { 2897 {
2898 origflags = flags;
2899
1381#if EV_USE_REALTIME 2900#if EV_USE_REALTIME
1382 if (!have_realtime) 2901 if (!have_realtime)
1383 { 2902 {
1384 struct timespec ts; 2903 struct timespec ts;
1385 2904
… …
1396 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 2915 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1397 have_monotonic = 1; 2916 have_monotonic = 1;
1398 } 2917 }
1399#endif 2918#endif
1400 2919
1401 ev_rt_now = ev_time ();
1402 mn_now = get_clock ();
1403 now_floor = mn_now;
1404 rtmn_diff = ev_rt_now - mn_now;
1405
1406 io_blocktime = 0.;
1407 timeout_blocktime = 0.;
1408 backend = 0;
1409 backend_fd = -1;
1410 gotasync = 0;
1411#if EV_USE_INOTIFY
1412 fs_fd = -2;
1413#endif
1414
1415 /* pid check not overridable via env */ 2920 /* pid check not overridable via env */
1416#ifndef _WIN32 2921#ifndef _WIN32
1417 if (flags & EVFLAG_FORKCHECK) 2922 if (flags & EVFLAG_FORKCHECK)
1418 curpid = getpid (); 2923 curpid = getpid ();
1419#endif 2924#endif
… …
1421 if (!(flags & EVFLAG_NOENV) 2926 if (!(flags & EVFLAG_NOENV)
1422 && !enable_secure () 2927 && !enable_secure ()
1423 && getenv ("LIBEV_FLAGS")) 2928 && getenv ("LIBEV_FLAGS"))
1424 flags = atoi (getenv ("LIBEV_FLAGS")); 2929 flags = atoi (getenv ("LIBEV_FLAGS"));
1425 2930
1426 if (!(flags & 0x0000ffffU)) 2931 ev_rt_now = ev_time ();
2932 mn_now = get_clock ();
2933 now_floor = mn_now;
2934 rtmn_diff = ev_rt_now - mn_now;
2935#if EV_FEATURE_API
2936 invoke_cb = ev_invoke_pending;
2937#endif
2938
2939 io_blocktime = 0.;
2940 timeout_blocktime = 0.;
2941 backend = 0;
2942 backend_fd = -1;
2943 sig_pending = 0;
2944#if EV_ASYNC_ENABLE
2945 async_pending = 0;
2946#endif
2947 pipe_write_skipped = 0;
2948 pipe_write_wanted = 0;
2949 evpipe [0] = -1;
2950 evpipe [1] = -1;
2951#if EV_USE_INOTIFY
2952 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2953#endif
2954#if EV_USE_SIGNALFD
2955 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
2956#endif
2957
2958 if (!(flags & EVBACKEND_MASK))
1427 flags |= ev_recommended_backends (); 2959 flags |= ev_recommended_backends ();
1428 2960
2961#if EV_USE_IOCP
2962 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2963#endif
1429#if EV_USE_PORT 2964#if EV_USE_PORT
1430 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2965 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1431#endif 2966#endif
1432#if EV_USE_KQUEUE 2967#if EV_USE_KQUEUE
1433 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2968 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
2969#endif
2970#if EV_USE_LINUXAIO
2971 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
1434#endif 2972#endif
1435#if EV_USE_EPOLL 2973#if EV_USE_EPOLL
1436 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 2974 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
1437#endif 2975#endif
1438#if EV_USE_POLL 2976#if EV_USE_POLL
1439 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 2977 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
1440#endif 2978#endif
1441#if EV_USE_SELECT 2979#if EV_USE_SELECT
1442 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2980 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
1443#endif 2981#endif
1444 2982
1445 ev_prepare_init (&pending_w, pendingcb); 2983 ev_prepare_init (&pending_w, pendingcb);
1446 2984
2985#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1447 ev_init (&pipe_w, pipecb); 2986 ev_init (&pipe_w, pipecb);
1448 ev_set_priority (&pipe_w, EV_MAXPRI); 2987 ev_set_priority (&pipe_w, EV_MAXPRI);
2988#endif
1449 } 2989 }
1450} 2990}
1451 2991
1452/* free up a loop structure */ 2992/* free up a loop structure */
1453static void noinline 2993ecb_cold
2994void
1454loop_destroy (EV_P) 2995ev_loop_destroy (EV_P)
1455{ 2996{
1456 int i; 2997 int i;
1457 2998
2999#if EV_MULTIPLICITY
3000 /* mimic free (0) */
3001 if (!EV_A)
3002 return;
3003#endif
3004
3005#if EV_CLEANUP_ENABLE
3006 /* queue cleanup watchers (and execute them) */
3007 if (expect_false (cleanupcnt))
3008 {
3009 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
3010 EV_INVOKE_PENDING;
3011 }
3012#endif
3013
3014#if EV_CHILD_ENABLE
3015 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
3016 {
3017 ev_ref (EV_A); /* child watcher */
3018 ev_signal_stop (EV_A_ &childev);
3019 }
3020#endif
3021
1458 if (ev_is_active (&pipe_w)) 3022 if (ev_is_active (&pipe_w))
1459 { 3023 {
1460 ev_ref (EV_A); /* signal watcher */ 3024 /*ev_ref (EV_A);*/
1461 ev_io_stop (EV_A_ &pipe_w); 3025 /*ev_io_stop (EV_A_ &pipe_w);*/
1462 3026
3027 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
3028 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
3029 }
3030
1463#if EV_USE_EVENTFD 3031#if EV_USE_SIGNALFD
1464 if (evfd >= 0) 3032 if (ev_is_active (&sigfd_w))
1465 close (evfd); 3033 close (sigfd);
1466#endif 3034#endif
1467
1468 if (evpipe [0] >= 0)
1469 {
1470 close (evpipe [0]);
1471 close (evpipe [1]);
1472 }
1473 }
1474 3035
1475#if EV_USE_INOTIFY 3036#if EV_USE_INOTIFY
1476 if (fs_fd >= 0) 3037 if (fs_fd >= 0)
1477 close (fs_fd); 3038 close (fs_fd);
1478#endif 3039#endif
1479 3040
1480 if (backend_fd >= 0) 3041 if (backend_fd >= 0)
1481 close (backend_fd); 3042 close (backend_fd);
1482 3043
3044#if EV_USE_IOCP
3045 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
3046#endif
1483#if EV_USE_PORT 3047#if EV_USE_PORT
1484 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3048 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1485#endif 3049#endif
1486#if EV_USE_KQUEUE 3050#if EV_USE_KQUEUE
1487 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3051 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
3052#endif
3053#if EV_USE_LINUXAIO
3054 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
1488#endif 3055#endif
1489#if EV_USE_EPOLL 3056#if EV_USE_EPOLL
1490 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3057 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
1491#endif 3058#endif
1492#if EV_USE_POLL 3059#if EV_USE_POLL
1493 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3060 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
1494#endif 3061#endif
1495#if EV_USE_SELECT 3062#if EV_USE_SELECT
1496 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3063 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
1497#endif 3064#endif
1498 3065
1499 for (i = NUMPRI; i--; ) 3066 for (i = NUMPRI; i--; )
1500 { 3067 {
1501 array_free (pending, [i]); 3068 array_free (pending, [i]);
1502#if EV_IDLE_ENABLE 3069#if EV_IDLE_ENABLE
1503 array_free (idle, [i]); 3070 array_free (idle, [i]);
1504#endif 3071#endif
1505 } 3072 }
1506 3073
1507 ev_free (anfds); anfdmax = 0; 3074 ev_free (anfds); anfds = 0; anfdmax = 0;
1508 3075
1509 /* have to use the microsoft-never-gets-it-right macro */ 3076 /* have to use the microsoft-never-gets-it-right macro */
1510 array_free (rfeed, EMPTY); 3077 array_free (rfeed, EMPTY);
1511 array_free (fdchange, EMPTY); 3078 array_free (fdchange, EMPTY);
1512 array_free (timer, EMPTY); 3079 array_free (timer, EMPTY);
… …
1514 array_free (periodic, EMPTY); 3081 array_free (periodic, EMPTY);
1515#endif 3082#endif
1516#if EV_FORK_ENABLE 3083#if EV_FORK_ENABLE
1517 array_free (fork, EMPTY); 3084 array_free (fork, EMPTY);
1518#endif 3085#endif
3086#if EV_CLEANUP_ENABLE
3087 array_free (cleanup, EMPTY);
3088#endif
1519 array_free (prepare, EMPTY); 3089 array_free (prepare, EMPTY);
1520 array_free (check, EMPTY); 3090 array_free (check, EMPTY);
1521#if EV_ASYNC_ENABLE 3091#if EV_ASYNC_ENABLE
1522 array_free (async, EMPTY); 3092 array_free (async, EMPTY);
1523#endif 3093#endif
1524 3094
1525 backend = 0; 3095 backend = 0;
3096
3097#if EV_MULTIPLICITY
3098 if (ev_is_default_loop (EV_A))
3099#endif
3100 ev_default_loop_ptr = 0;
3101#if EV_MULTIPLICITY
3102 else
3103 ev_free (EV_A);
3104#endif
1526} 3105}
1527 3106
1528#if EV_USE_INOTIFY 3107#if EV_USE_INOTIFY
1529inline_size void infy_fork (EV_P); 3108inline_size void infy_fork (EV_P);
1530#endif 3109#endif
1531 3110
1532inline_size void 3111inline_size void
1533loop_fork (EV_P) 3112loop_fork (EV_P)
1534{ 3113{
1535#if EV_USE_PORT 3114#if EV_USE_PORT
1536 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3115 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1537#endif 3116#endif
1538#if EV_USE_KQUEUE 3117#if EV_USE_KQUEUE
1539 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 3118 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
3119#endif
3120#if EV_USE_LINUXAIO
3121 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
1540#endif 3122#endif
1541#if EV_USE_EPOLL 3123#if EV_USE_EPOLL
1542 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3124 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
1543#endif 3125#endif
1544#if EV_USE_INOTIFY 3126#if EV_USE_INOTIFY
1545 infy_fork (EV_A); 3127 infy_fork (EV_A);
1546#endif 3128#endif
1547 3129
3130#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1548 if (ev_is_active (&pipe_w)) 3131 if (ev_is_active (&pipe_w) && postfork != 2)
1549 { 3132 {
1550 /* this "locks" the handlers against writing to the pipe */ 3133 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1551 /* while we modify the fd vars */
1552 gotsig = 1;
1553#if EV_ASYNC_ENABLE
1554 gotasync = 1;
1555#endif
1556 3134
1557 ev_ref (EV_A); 3135 ev_ref (EV_A);
1558 ev_io_stop (EV_A_ &pipe_w); 3136 ev_io_stop (EV_A_ &pipe_w);
1559 3137
1560#if EV_USE_EVENTFD
1561 if (evfd >= 0)
1562 close (evfd);
1563#endif
1564
1565 if (evpipe [0] >= 0) 3138 if (evpipe [0] >= 0)
1566 { 3139 EV_WIN32_CLOSE_FD (evpipe [0]);
1567 close (evpipe [0]);
1568 close (evpipe [1]);
1569 }
1570 3140
1571 evpipe_init (EV_A); 3141 evpipe_init (EV_A);
1572 /* now iterate over everything, in case we missed something */ 3142 /* iterate over everything, in case we missed something before */
1573 pipecb (EV_A_ &pipe_w, EV_READ); 3143 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1574 } 3144 }
3145#endif
1575 3146
1576 postfork = 0; 3147 postfork = 0;
1577} 3148}
1578 3149
1579#if EV_MULTIPLICITY 3150#if EV_MULTIPLICITY
1580 3151
3152ecb_cold
1581struct ev_loop * 3153struct ev_loop *
1582ev_loop_new (unsigned int flags) 3154ev_loop_new (unsigned int flags) EV_NOEXCEPT
1583{ 3155{
1584 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3156 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1585 3157
1586 memset (loop, 0, sizeof (struct ev_loop)); 3158 memset (EV_A, 0, sizeof (struct ev_loop));
1587
1588 loop_init (EV_A_ flags); 3159 loop_init (EV_A_ flags);
1589 3160
1590 if (ev_backend (EV_A)) 3161 if (ev_backend (EV_A))
1591 return loop; 3162 return EV_A;
1592 3163
3164 ev_free (EV_A);
1593 return 0; 3165 return 0;
1594} 3166}
1595 3167
1596void 3168#endif /* multiplicity */
1597ev_loop_destroy (EV_P)
1598{
1599 loop_destroy (EV_A);
1600 ev_free (loop);
1601}
1602
1603void
1604ev_loop_fork (EV_P)
1605{
1606 postfork = 1; /* must be in line with ev_default_fork */
1607}
1608 3169
1609#if EV_VERIFY 3170#if EV_VERIFY
1610static void noinline 3171noinline ecb_cold
3172static void
1611verify_watcher (EV_P_ W w) 3173verify_watcher (EV_P_ W w)
1612{ 3174{
1613 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3175 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1614 3176
1615 if (w->pending) 3177 if (w->pending)
1616 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3178 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1617} 3179}
1618 3180
1619static void noinline 3181noinline ecb_cold
3182static void
1620verify_heap (EV_P_ ANHE *heap, int N) 3183verify_heap (EV_P_ ANHE *heap, int N)
1621{ 3184{
1622 int i; 3185 int i;
1623 3186
1624 for (i = HEAP0; i < N + HEAP0; ++i) 3187 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1629 3192
1630 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3193 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1631 } 3194 }
1632} 3195}
1633 3196
1634static void noinline 3197noinline ecb_cold
3198static void
1635array_verify (EV_P_ W *ws, int cnt) 3199array_verify (EV_P_ W *ws, int cnt)
1636{ 3200{
1637 while (cnt--) 3201 while (cnt--)
1638 { 3202 {
1639 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3203 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1640 verify_watcher (EV_A_ ws [cnt]); 3204 verify_watcher (EV_A_ ws [cnt]);
1641 } 3205 }
1642} 3206}
1643#endif 3207#endif
1644 3208
1645void 3209#if EV_FEATURE_API
1646ev_loop_verify (EV_P) 3210void ecb_cold
3211ev_verify (EV_P) EV_NOEXCEPT
1647{ 3212{
1648#if EV_VERIFY 3213#if EV_VERIFY
1649 int i; 3214 int i;
1650 WL w; 3215 WL w, w2;
1651 3216
1652 assert (activecnt >= -1); 3217 assert (activecnt >= -1);
1653 3218
1654 assert (fdchangemax >= fdchangecnt); 3219 assert (fdchangemax >= fdchangecnt);
1655 for (i = 0; i < fdchangecnt; ++i) 3220 for (i = 0; i < fdchangecnt; ++i)
1656 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3221 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1657 3222
1658 assert (anfdmax >= 0); 3223 assert (anfdmax >= 0);
1659 for (i = 0; i < anfdmax; ++i) 3224 for (i = 0; i < anfdmax; ++i)
3225 {
3226 int j = 0;
3227
1660 for (w = anfds [i].head; w; w = w->next) 3228 for (w = w2 = anfds [i].head; w; w = w->next)
1661 { 3229 {
1662 verify_watcher (EV_A_ (W)w); 3230 verify_watcher (EV_A_ (W)w);
3231
3232 if (j++ & 1)
3233 {
3234 assert (("libev: io watcher list contains a loop", w != w2));
3235 w2 = w2->next;
3236 }
3237
1663 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3238 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1664 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 3239 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1665 } 3240 }
3241 }
1666 3242
1667 assert (timermax >= timercnt); 3243 assert (timermax >= timercnt);
1668 verify_heap (EV_A_ timers, timercnt); 3244 verify_heap (EV_A_ timers, timercnt);
1669 3245
1670#if EV_PERIODIC_ENABLE 3246#if EV_PERIODIC_ENABLE
… …
1685#if EV_FORK_ENABLE 3261#if EV_FORK_ENABLE
1686 assert (forkmax >= forkcnt); 3262 assert (forkmax >= forkcnt);
1687 array_verify (EV_A_ (W *)forks, forkcnt); 3263 array_verify (EV_A_ (W *)forks, forkcnt);
1688#endif 3264#endif
1689 3265
3266#if EV_CLEANUP_ENABLE
3267 assert (cleanupmax >= cleanupcnt);
3268 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
3269#endif
3270
1690#if EV_ASYNC_ENABLE 3271#if EV_ASYNC_ENABLE
1691 assert (asyncmax >= asynccnt); 3272 assert (asyncmax >= asynccnt);
1692 array_verify (EV_A_ (W *)asyncs, asynccnt); 3273 array_verify (EV_A_ (W *)asyncs, asynccnt);
1693#endif 3274#endif
1694 3275
3276#if EV_PREPARE_ENABLE
1695 assert (preparemax >= preparecnt); 3277 assert (preparemax >= preparecnt);
1696 array_verify (EV_A_ (W *)prepares, preparecnt); 3278 array_verify (EV_A_ (W *)prepares, preparecnt);
3279#endif
1697 3280
3281#if EV_CHECK_ENABLE
1698 assert (checkmax >= checkcnt); 3282 assert (checkmax >= checkcnt);
1699 array_verify (EV_A_ (W *)checks, checkcnt); 3283 array_verify (EV_A_ (W *)checks, checkcnt);
3284#endif
1700 3285
1701# if 0 3286# if 0
3287#if EV_CHILD_ENABLE
1702 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 3288 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1703 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 3289 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
3290#endif
1704# endif 3291# endif
1705#endif 3292#endif
1706} 3293}
1707 3294#endif
1708#endif /* multiplicity */
1709 3295
1710#if EV_MULTIPLICITY 3296#if EV_MULTIPLICITY
3297ecb_cold
1711struct ev_loop * 3298struct ev_loop *
1712ev_default_loop_init (unsigned int flags)
1713#else 3299#else
1714int 3300int
3301#endif
1715ev_default_loop (unsigned int flags) 3302ev_default_loop (unsigned int flags) EV_NOEXCEPT
1716#endif
1717{ 3303{
1718 if (!ev_default_loop_ptr) 3304 if (!ev_default_loop_ptr)
1719 { 3305 {
1720#if EV_MULTIPLICITY 3306#if EV_MULTIPLICITY
1721 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 3307 EV_P = ev_default_loop_ptr = &default_loop_struct;
1722#else 3308#else
1723 ev_default_loop_ptr = 1; 3309 ev_default_loop_ptr = 1;
1724#endif 3310#endif
1725 3311
1726 loop_init (EV_A_ flags); 3312 loop_init (EV_A_ flags);
1727 3313
1728 if (ev_backend (EV_A)) 3314 if (ev_backend (EV_A))
1729 { 3315 {
1730#ifndef _WIN32 3316#if EV_CHILD_ENABLE
1731 ev_signal_init (&childev, childcb, SIGCHLD); 3317 ev_signal_init (&childev, childcb, SIGCHLD);
1732 ev_set_priority (&childev, EV_MAXPRI); 3318 ev_set_priority (&childev, EV_MAXPRI);
1733 ev_signal_start (EV_A_ &childev); 3319 ev_signal_start (EV_A_ &childev);
1734 ev_unref (EV_A); /* child watcher should not keep loop alive */ 3320 ev_unref (EV_A); /* child watcher should not keep loop alive */
1735#endif 3321#endif
… …
1740 3326
1741 return ev_default_loop_ptr; 3327 return ev_default_loop_ptr;
1742} 3328}
1743 3329
1744void 3330void
1745ev_default_destroy (void) 3331ev_loop_fork (EV_P) EV_NOEXCEPT
1746{ 3332{
1747#if EV_MULTIPLICITY 3333 postfork = 1;
1748 struct ev_loop *loop = ev_default_loop_ptr;
1749#endif
1750
1751 ev_default_loop_ptr = 0;
1752
1753#ifndef _WIN32
1754 ev_ref (EV_A); /* child watcher */
1755 ev_signal_stop (EV_A_ &childev);
1756#endif
1757
1758 loop_destroy (EV_A);
1759}
1760
1761void
1762ev_default_fork (void)
1763{
1764#if EV_MULTIPLICITY
1765 struct ev_loop *loop = ev_default_loop_ptr;
1766#endif
1767
1768 postfork = 1; /* must be in line with ev_loop_fork */
1769} 3334}
1770 3335
1771/*****************************************************************************/ 3336/*****************************************************************************/
1772 3337
1773void 3338void
1774ev_invoke (EV_P_ void *w, int revents) 3339ev_invoke (EV_P_ void *w, int revents)
1775{ 3340{
1776 EV_CB_INVOKE ((W)w, revents); 3341 EV_CB_INVOKE ((W)w, revents);
1777} 3342}
1778 3343
1779inline_speed void 3344unsigned int
1780call_pending (EV_P) 3345ev_pending_count (EV_P) EV_NOEXCEPT
1781{ 3346{
1782 int pri; 3347 int pri;
3348 unsigned int count = 0;
1783 3349
1784 for (pri = NUMPRI; pri--; ) 3350 for (pri = NUMPRI; pri--; )
3351 count += pendingcnt [pri];
3352
3353 return count;
3354}
3355
3356noinline
3357void
3358ev_invoke_pending (EV_P)
3359{
3360 pendingpri = NUMPRI;
3361
3362 do
3363 {
3364 --pendingpri;
3365
3366 /* pendingpri possibly gets modified in the inner loop */
1785 while (pendingcnt [pri]) 3367 while (pendingcnt [pendingpri])
1786 { 3368 {
1787 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3369 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
1788 3370
1789 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1790 /* ^ this is no longer true, as pending_w could be here */
1791
1792 p->w->pending = 0; 3371 p->w->pending = 0;
1793 EV_CB_INVOKE (p->w, p->events); 3372 EV_CB_INVOKE (p->w, p->events);
1794 EV_FREQUENT_CHECK; 3373 EV_FREQUENT_CHECK;
1795 } 3374 }
3375 }
3376 while (pendingpri);
1796} 3377}
1797 3378
1798#if EV_IDLE_ENABLE 3379#if EV_IDLE_ENABLE
1799/* make idle watchers pending. this handles the "call-idle */ 3380/* make idle watchers pending. this handles the "call-idle */
1800/* only when higher priorities are idle" logic */ 3381/* only when higher priorities are idle" logic */
… …
1852 EV_FREQUENT_CHECK; 3433 EV_FREQUENT_CHECK;
1853 feed_reverse (EV_A_ (W)w); 3434 feed_reverse (EV_A_ (W)w);
1854 } 3435 }
1855 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 3436 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1856 3437
1857 feed_reverse_done (EV_A_ EV_TIMEOUT); 3438 feed_reverse_done (EV_A_ EV_TIMER);
1858 } 3439 }
1859} 3440}
1860 3441
1861#if EV_PERIODIC_ENABLE 3442#if EV_PERIODIC_ENABLE
3443
3444noinline
3445static void
3446periodic_recalc (EV_P_ ev_periodic *w)
3447{
3448 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3449 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3450
3451 /* the above almost always errs on the low side */
3452 while (at <= ev_rt_now)
3453 {
3454 ev_tstamp nat = at + w->interval;
3455
3456 /* when resolution fails us, we use ev_rt_now */
3457 if (expect_false (nat == at))
3458 {
3459 at = ev_rt_now;
3460 break;
3461 }
3462
3463 at = nat;
3464 }
3465
3466 ev_at (w) = at;
3467}
3468
1862/* make periodics pending */ 3469/* make periodics pending */
1863inline_size void 3470inline_size void
1864periodics_reify (EV_P) 3471periodics_reify (EV_P)
1865{ 3472{
1866 EV_FREQUENT_CHECK; 3473 EV_FREQUENT_CHECK;
1867 3474
1868 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3475 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1869 { 3476 {
1870 int feed_count = 0;
1871
1872 do 3477 do
1873 { 3478 {
1874 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3479 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
1875 3480
1876 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3481 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
1885 ANHE_at_cache (periodics [HEAP0]); 3490 ANHE_at_cache (periodics [HEAP0]);
1886 downheap (periodics, periodiccnt, HEAP0); 3491 downheap (periodics, periodiccnt, HEAP0);
1887 } 3492 }
1888 else if (w->interval) 3493 else if (w->interval)
1889 { 3494 {
1890 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3495 periodic_recalc (EV_A_ w);
1891 /* if next trigger time is not sufficiently in the future, put it there */
1892 /* this might happen because of floating point inexactness */
1893 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1894 {
1895 ev_at (w) += w->interval;
1896
1897 /* if interval is unreasonably low we might still have a time in the past */
1898 /* so correct this. this will make the periodic very inexact, but the user */
1899 /* has effectively asked to get triggered more often than possible */
1900 if (ev_at (w) < ev_rt_now)
1901 ev_at (w) = ev_rt_now;
1902 }
1903
1904 ANHE_at_cache (periodics [HEAP0]); 3496 ANHE_at_cache (periodics [HEAP0]);
1905 downheap (periodics, periodiccnt, HEAP0); 3497 downheap (periodics, periodiccnt, HEAP0);
1906 } 3498 }
1907 else 3499 else
1908 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3500 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
1915 feed_reverse_done (EV_A_ EV_PERIODIC); 3507 feed_reverse_done (EV_A_ EV_PERIODIC);
1916 } 3508 }
1917} 3509}
1918 3510
1919/* simply recalculate all periodics */ 3511/* simply recalculate all periodics */
1920/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 3512/* TODO: maybe ensure that at least one event happens when jumping forward? */
1921static void noinline 3513noinline ecb_cold
3514static void
1922periodics_reschedule (EV_P) 3515periodics_reschedule (EV_P)
1923{ 3516{
1924 int i; 3517 int i;
1925 3518
1926 /* adjust periodics after time jump */ 3519 /* adjust periodics after time jump */
… …
1929 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3522 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1930 3523
1931 if (w->reschedule_cb) 3524 if (w->reschedule_cb)
1932 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3525 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1933 else if (w->interval) 3526 else if (w->interval)
1934 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3527 periodic_recalc (EV_A_ w);
1935 3528
1936 ANHE_at_cache (periodics [i]); 3529 ANHE_at_cache (periodics [i]);
1937 } 3530 }
1938 3531
1939 reheap (periodics, periodiccnt); 3532 reheap (periodics, periodiccnt);
1940} 3533}
1941#endif 3534#endif
1942 3535
1943/* adjust all timers by a given offset */ 3536/* adjust all timers by a given offset */
1944static void noinline 3537noinline ecb_cold
3538static void
1945timers_reschedule (EV_P_ ev_tstamp adjust) 3539timers_reschedule (EV_P_ ev_tstamp adjust)
1946{ 3540{
1947 int i; 3541 int i;
1948 3542
1949 for (i = 0; i < timercnt; ++i) 3543 for (i = 0; i < timercnt; ++i)
… …
1953 ANHE_at_cache (*he); 3547 ANHE_at_cache (*he);
1954 } 3548 }
1955} 3549}
1956 3550
1957/* fetch new monotonic and realtime times from the kernel */ 3551/* fetch new monotonic and realtime times from the kernel */
1958/* also detetc if there was a timejump, and act accordingly */ 3552/* also detect if there was a timejump, and act accordingly */
1959inline_speed void 3553inline_speed void
1960time_update (EV_P_ ev_tstamp max_block) 3554time_update (EV_P_ ev_tstamp max_block)
1961{ 3555{
1962#if EV_USE_MONOTONIC 3556#if EV_USE_MONOTONIC
1963 if (expect_true (have_monotonic)) 3557 if (expect_true (have_monotonic))
… …
1986 * doesn't hurt either as we only do this on time-jumps or 3580 * doesn't hurt either as we only do this on time-jumps or
1987 * in the unlikely event of having been preempted here. 3581 * in the unlikely event of having been preempted here.
1988 */ 3582 */
1989 for (i = 4; --i; ) 3583 for (i = 4; --i; )
1990 { 3584 {
3585 ev_tstamp diff;
1991 rtmn_diff = ev_rt_now - mn_now; 3586 rtmn_diff = ev_rt_now - mn_now;
1992 3587
3588 diff = odiff - rtmn_diff;
3589
1993 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3590 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
1994 return; /* all is well */ 3591 return; /* all is well */
1995 3592
1996 ev_rt_now = ev_time (); 3593 ev_rt_now = ev_time ();
1997 mn_now = get_clock (); 3594 mn_now = get_clock ();
1998 now_floor = mn_now; 3595 now_floor = mn_now;
… …
2020 3617
2021 mn_now = ev_rt_now; 3618 mn_now = ev_rt_now;
2022 } 3619 }
2023} 3620}
2024 3621
2025static int loop_done; 3622int
2026
2027void
2028ev_loop (EV_P_ int flags) 3623ev_run (EV_P_ int flags)
2029{ 3624{
3625#if EV_FEATURE_API
3626 ++loop_depth;
3627#endif
3628
3629 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
3630
2030 loop_done = EVUNLOOP_CANCEL; 3631 loop_done = EVBREAK_CANCEL;
2031 3632
2032 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 3633 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2033 3634
2034 do 3635 do
2035 { 3636 {
2036#if EV_VERIFY >= 2 3637#if EV_VERIFY >= 2
2037 ev_loop_verify (EV_A); 3638 ev_verify (EV_A);
2038#endif 3639#endif
2039 3640
2040#ifndef _WIN32 3641#ifndef _WIN32
2041 if (expect_false (curpid)) /* penalise the forking check even more */ 3642 if (expect_false (curpid)) /* penalise the forking check even more */
2042 if (expect_false (getpid () != curpid)) 3643 if (expect_false (getpid () != curpid))
… …
2050 /* we might have forked, so queue fork handlers */ 3651 /* we might have forked, so queue fork handlers */
2051 if (expect_false (postfork)) 3652 if (expect_false (postfork))
2052 if (forkcnt) 3653 if (forkcnt)
2053 { 3654 {
2054 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3655 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2055 call_pending (EV_A); 3656 EV_INVOKE_PENDING;
2056 } 3657 }
2057#endif 3658#endif
2058 3659
3660#if EV_PREPARE_ENABLE
2059 /* queue prepare watchers (and execute them) */ 3661 /* queue prepare watchers (and execute them) */
2060 if (expect_false (preparecnt)) 3662 if (expect_false (preparecnt))
2061 { 3663 {
2062 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3664 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2063 call_pending (EV_A); 3665 EV_INVOKE_PENDING;
2064 } 3666 }
3667#endif
3668
3669 if (expect_false (loop_done))
3670 break;
2065 3671
2066 /* we might have forked, so reify kernel state if necessary */ 3672 /* we might have forked, so reify kernel state if necessary */
2067 if (expect_false (postfork)) 3673 if (expect_false (postfork))
2068 loop_fork (EV_A); 3674 loop_fork (EV_A);
2069 3675
… …
2073 /* calculate blocking time */ 3679 /* calculate blocking time */
2074 { 3680 {
2075 ev_tstamp waittime = 0.; 3681 ev_tstamp waittime = 0.;
2076 ev_tstamp sleeptime = 0.; 3682 ev_tstamp sleeptime = 0.;
2077 3683
3684 /* remember old timestamp for io_blocktime calculation */
3685 ev_tstamp prev_mn_now = mn_now;
3686
3687 /* update time to cancel out callback processing overhead */
3688 time_update (EV_A_ 1e100);
3689
3690 /* from now on, we want a pipe-wake-up */
3691 pipe_write_wanted = 1;
3692
3693 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3694
2078 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3695 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2079 { 3696 {
2080 /* update time to cancel out callback processing overhead */
2081 time_update (EV_A_ 1e100);
2082
2083 waittime = MAX_BLOCKTIME; 3697 waittime = MAX_BLOCKTIME;
2084 3698
2085 if (timercnt) 3699 if (timercnt)
2086 { 3700 {
2087 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3701 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2088 if (waittime > to) waittime = to; 3702 if (waittime > to) waittime = to;
2089 } 3703 }
2090 3704
2091#if EV_PERIODIC_ENABLE 3705#if EV_PERIODIC_ENABLE
2092 if (periodiccnt) 3706 if (periodiccnt)
2093 { 3707 {
2094 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3708 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2095 if (waittime > to) waittime = to; 3709 if (waittime > to) waittime = to;
2096 } 3710 }
2097#endif 3711#endif
2098 3712
3713 /* don't let timeouts decrease the waittime below timeout_blocktime */
2099 if (expect_false (waittime < timeout_blocktime)) 3714 if (expect_false (waittime < timeout_blocktime))
2100 waittime = timeout_blocktime; 3715 waittime = timeout_blocktime;
2101 3716
2102 sleeptime = waittime - backend_fudge; 3717 /* at this point, we NEED to wait, so we have to ensure */
3718 /* to pass a minimum nonzero value to the backend */
3719 if (expect_false (waittime < backend_mintime))
3720 waittime = backend_mintime;
2103 3721
3722 /* extra check because io_blocktime is commonly 0 */
2104 if (expect_true (sleeptime > io_blocktime)) 3723 if (expect_false (io_blocktime))
2105 sleeptime = io_blocktime;
2106
2107 if (sleeptime)
2108 { 3724 {
3725 sleeptime = io_blocktime - (mn_now - prev_mn_now);
3726
3727 if (sleeptime > waittime - backend_mintime)
3728 sleeptime = waittime - backend_mintime;
3729
3730 if (expect_true (sleeptime > 0.))
3731 {
2109 ev_sleep (sleeptime); 3732 ev_sleep (sleeptime);
2110 waittime -= sleeptime; 3733 waittime -= sleeptime;
3734 }
2111 } 3735 }
2112 } 3736 }
2113 3737
3738#if EV_FEATURE_API
2114 ++loop_count; 3739 ++loop_count;
3740#endif
3741 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2115 backend_poll (EV_A_ waittime); 3742 backend_poll (EV_A_ waittime);
3743 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3744
3745 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3746
3747 ECB_MEMORY_FENCE_ACQUIRE;
3748 if (pipe_write_skipped)
3749 {
3750 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3751 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3752 }
3753
2116 3754
2117 /* update ev_rt_now, do magic */ 3755 /* update ev_rt_now, do magic */
2118 time_update (EV_A_ waittime + sleeptime); 3756 time_update (EV_A_ waittime + sleeptime);
2119 } 3757 }
2120 3758
… …
2127#if EV_IDLE_ENABLE 3765#if EV_IDLE_ENABLE
2128 /* queue idle watchers unless other events are pending */ 3766 /* queue idle watchers unless other events are pending */
2129 idle_reify (EV_A); 3767 idle_reify (EV_A);
2130#endif 3768#endif
2131 3769
3770#if EV_CHECK_ENABLE
2132 /* queue check watchers, to be executed first */ 3771 /* queue check watchers, to be executed first */
2133 if (expect_false (checkcnt)) 3772 if (expect_false (checkcnt))
2134 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3773 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3774#endif
2135 3775
2136 call_pending (EV_A); 3776 EV_INVOKE_PENDING;
2137 } 3777 }
2138 while (expect_true ( 3778 while (expect_true (
2139 activecnt 3779 activecnt
2140 && !loop_done 3780 && !loop_done
2141 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3781 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2142 )); 3782 ));
2143 3783
2144 if (loop_done == EVUNLOOP_ONE) 3784 if (loop_done == EVBREAK_ONE)
2145 loop_done = EVUNLOOP_CANCEL; 3785 loop_done = EVBREAK_CANCEL;
2146}
2147 3786
3787#if EV_FEATURE_API
3788 --loop_depth;
3789#endif
3790
3791 return activecnt;
3792}
3793
2148void 3794void
2149ev_unloop (EV_P_ int how) 3795ev_break (EV_P_ int how) EV_NOEXCEPT
2150{ 3796{
2151 loop_done = how; 3797 loop_done = how;
2152} 3798}
2153 3799
2154void 3800void
2155ev_ref (EV_P) 3801ev_ref (EV_P) EV_NOEXCEPT
2156{ 3802{
2157 ++activecnt; 3803 ++activecnt;
2158} 3804}
2159 3805
2160void 3806void
2161ev_unref (EV_P) 3807ev_unref (EV_P) EV_NOEXCEPT
2162{ 3808{
2163 --activecnt; 3809 --activecnt;
2164} 3810}
2165 3811
2166void 3812void
2167ev_now_update (EV_P) 3813ev_now_update (EV_P) EV_NOEXCEPT
2168{ 3814{
2169 time_update (EV_A_ 1e100); 3815 time_update (EV_A_ 1e100);
2170} 3816}
2171 3817
2172void 3818void
2173ev_suspend (EV_P) 3819ev_suspend (EV_P) EV_NOEXCEPT
2174{ 3820{
2175 ev_now_update (EV_A); 3821 ev_now_update (EV_A);
2176} 3822}
2177 3823
2178void 3824void
2179ev_resume (EV_P) 3825ev_resume (EV_P) EV_NOEXCEPT
2180{ 3826{
2181 ev_tstamp mn_prev = mn_now; 3827 ev_tstamp mn_prev = mn_now;
2182 3828
2183 ev_now_update (EV_A); 3829 ev_now_update (EV_A);
2184 timers_reschedule (EV_A_ mn_now - mn_prev); 3830 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2201inline_size void 3847inline_size void
2202wlist_del (WL *head, WL elem) 3848wlist_del (WL *head, WL elem)
2203{ 3849{
2204 while (*head) 3850 while (*head)
2205 { 3851 {
2206 if (*head == elem) 3852 if (expect_true (*head == elem))
2207 { 3853 {
2208 *head = elem->next; 3854 *head = elem->next;
2209 return; 3855 break;
2210 } 3856 }
2211 3857
2212 head = &(*head)->next; 3858 head = &(*head)->next;
2213 } 3859 }
2214} 3860}
… …
2223 w->pending = 0; 3869 w->pending = 0;
2224 } 3870 }
2225} 3871}
2226 3872
2227int 3873int
2228ev_clear_pending (EV_P_ void *w) 3874ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
2229{ 3875{
2230 W w_ = (W)w; 3876 W w_ = (W)w;
2231 int pending = w_->pending; 3877 int pending = w_->pending;
2232 3878
2233 if (expect_true (pending)) 3879 if (expect_true (pending))
… …
2242} 3888}
2243 3889
2244inline_size void 3890inline_size void
2245pri_adjust (EV_P_ W w) 3891pri_adjust (EV_P_ W w)
2246{ 3892{
2247 int pri = w->priority; 3893 int pri = ev_priority (w);
2248 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 3894 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2249 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 3895 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2250 w->priority = pri; 3896 ev_set_priority (w, pri);
2251} 3897}
2252 3898
2253inline_speed void 3899inline_speed void
2254ev_start (EV_P_ W w, int active) 3900ev_start (EV_P_ W w, int active)
2255{ 3901{
… …
2265 w->active = 0; 3911 w->active = 0;
2266} 3912}
2267 3913
2268/*****************************************************************************/ 3914/*****************************************************************************/
2269 3915
2270void noinline 3916noinline
3917void
2271ev_io_start (EV_P_ ev_io *w) 3918ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
2272{ 3919{
2273 int fd = w->fd; 3920 int fd = w->fd;
2274 3921
2275 if (expect_false (ev_is_active (w))) 3922 if (expect_false (ev_is_active (w)))
2276 return; 3923 return;
2277 3924
2278 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 3925 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2279 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 3926 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2280 3927
3928#if EV_VERIFY >= 2
3929 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
3930#endif
2281 EV_FREQUENT_CHECK; 3931 EV_FREQUENT_CHECK;
2282 3932
2283 ev_start (EV_A_ (W)w, 1); 3933 ev_start (EV_A_ (W)w, 1);
2284 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3934 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
2285 wlist_add (&anfds[fd].head, (WL)w); 3935 wlist_add (&anfds[fd].head, (WL)w);
2286 3936
3937 /* common bug, apparently */
3938 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3939
2287 fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1); 3940 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2288 w->events &= ~EV__IOFDSET; 3941 w->events &= ~EV__IOFDSET;
2289 3942
2290 EV_FREQUENT_CHECK; 3943 EV_FREQUENT_CHECK;
2291} 3944}
2292 3945
2293void noinline 3946noinline
3947void
2294ev_io_stop (EV_P_ ev_io *w) 3948ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
2295{ 3949{
2296 clear_pending (EV_A_ (W)w); 3950 clear_pending (EV_A_ (W)w);
2297 if (expect_false (!ev_is_active (w))) 3951 if (expect_false (!ev_is_active (w)))
2298 return; 3952 return;
2299 3953
2300 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 3954 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2301 3955
3956#if EV_VERIFY >= 2
3957 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
3958#endif
2302 EV_FREQUENT_CHECK; 3959 EV_FREQUENT_CHECK;
2303 3960
2304 wlist_del (&anfds[w->fd].head, (WL)w); 3961 wlist_del (&anfds[w->fd].head, (WL)w);
2305 ev_stop (EV_A_ (W)w); 3962 ev_stop (EV_A_ (W)w);
2306 3963
2307 fd_change (EV_A_ w->fd, 1); 3964 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2308 3965
2309 EV_FREQUENT_CHECK; 3966 EV_FREQUENT_CHECK;
2310} 3967}
2311 3968
2312void noinline 3969noinline
3970void
2313ev_timer_start (EV_P_ ev_timer *w) 3971ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
2314{ 3972{
2315 if (expect_false (ev_is_active (w))) 3973 if (expect_false (ev_is_active (w)))
2316 return; 3974 return;
2317 3975
2318 ev_at (w) += mn_now; 3976 ev_at (w) += mn_now;
… …
2321 3979
2322 EV_FREQUENT_CHECK; 3980 EV_FREQUENT_CHECK;
2323 3981
2324 ++timercnt; 3982 ++timercnt;
2325 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 3983 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
2326 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 3984 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
2327 ANHE_w (timers [ev_active (w)]) = (WT)w; 3985 ANHE_w (timers [ev_active (w)]) = (WT)w;
2328 ANHE_at_cache (timers [ev_active (w)]); 3986 ANHE_at_cache (timers [ev_active (w)]);
2329 upheap (timers, ev_active (w)); 3987 upheap (timers, ev_active (w));
2330 3988
2331 EV_FREQUENT_CHECK; 3989 EV_FREQUENT_CHECK;
2332 3990
2333 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3991 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2334} 3992}
2335 3993
2336void noinline 3994noinline
3995void
2337ev_timer_stop (EV_P_ ev_timer *w) 3996ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
2338{ 3997{
2339 clear_pending (EV_A_ (W)w); 3998 clear_pending (EV_A_ (W)w);
2340 if (expect_false (!ev_is_active (w))) 3999 if (expect_false (!ev_is_active (w)))
2341 return; 4000 return;
2342 4001
… …
2354 timers [active] = timers [timercnt + HEAP0]; 4013 timers [active] = timers [timercnt + HEAP0];
2355 adjustheap (timers, timercnt, active); 4014 adjustheap (timers, timercnt, active);
2356 } 4015 }
2357 } 4016 }
2358 4017
2359 EV_FREQUENT_CHECK;
2360
2361 ev_at (w) -= mn_now; 4018 ev_at (w) -= mn_now;
2362 4019
2363 ev_stop (EV_A_ (W)w); 4020 ev_stop (EV_A_ (W)w);
2364}
2365 4021
4022 EV_FREQUENT_CHECK;
4023}
4024
2366void noinline 4025noinline
4026void
2367ev_timer_again (EV_P_ ev_timer *w) 4027ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
2368{ 4028{
2369 EV_FREQUENT_CHECK; 4029 EV_FREQUENT_CHECK;
4030
4031 clear_pending (EV_A_ (W)w);
2370 4032
2371 if (ev_is_active (w)) 4033 if (ev_is_active (w))
2372 { 4034 {
2373 if (w->repeat) 4035 if (w->repeat)
2374 { 4036 {
… …
2386 } 4048 }
2387 4049
2388 EV_FREQUENT_CHECK; 4050 EV_FREQUENT_CHECK;
2389} 4051}
2390 4052
4053ev_tstamp
4054ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
4055{
4056 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
4057}
4058
2391#if EV_PERIODIC_ENABLE 4059#if EV_PERIODIC_ENABLE
2392void noinline 4060noinline
4061void
2393ev_periodic_start (EV_P_ ev_periodic *w) 4062ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
2394{ 4063{
2395 if (expect_false (ev_is_active (w))) 4064 if (expect_false (ev_is_active (w)))
2396 return; 4065 return;
2397 4066
2398 if (w->reschedule_cb) 4067 if (w->reschedule_cb)
2399 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4068 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2400 else if (w->interval) 4069 else if (w->interval)
2401 { 4070 {
2402 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 4071 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2403 /* this formula differs from the one in periodic_reify because we do not always round up */ 4072 periodic_recalc (EV_A_ w);
2404 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2405 } 4073 }
2406 else 4074 else
2407 ev_at (w) = w->offset; 4075 ev_at (w) = w->offset;
2408 4076
2409 EV_FREQUENT_CHECK; 4077 EV_FREQUENT_CHECK;
2410 4078
2411 ++periodiccnt; 4079 ++periodiccnt;
2412 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4080 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2413 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4081 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
2414 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4082 ANHE_w (periodics [ev_active (w)]) = (WT)w;
2415 ANHE_at_cache (periodics [ev_active (w)]); 4083 ANHE_at_cache (periodics [ev_active (w)]);
2416 upheap (periodics, ev_active (w)); 4084 upheap (periodics, ev_active (w));
2417 4085
2418 EV_FREQUENT_CHECK; 4086 EV_FREQUENT_CHECK;
2419 4087
2420 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4088 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2421} 4089}
2422 4090
2423void noinline 4091noinline
4092void
2424ev_periodic_stop (EV_P_ ev_periodic *w) 4093ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
2425{ 4094{
2426 clear_pending (EV_A_ (W)w); 4095 clear_pending (EV_A_ (W)w);
2427 if (expect_false (!ev_is_active (w))) 4096 if (expect_false (!ev_is_active (w)))
2428 return; 4097 return;
2429 4098
… …
2441 periodics [active] = periodics [periodiccnt + HEAP0]; 4110 periodics [active] = periodics [periodiccnt + HEAP0];
2442 adjustheap (periodics, periodiccnt, active); 4111 adjustheap (periodics, periodiccnt, active);
2443 } 4112 }
2444 } 4113 }
2445 4114
2446 EV_FREQUENT_CHECK;
2447
2448 ev_stop (EV_A_ (W)w); 4115 ev_stop (EV_A_ (W)w);
2449}
2450 4116
4117 EV_FREQUENT_CHECK;
4118}
4119
2451void noinline 4120noinline
4121void
2452ev_periodic_again (EV_P_ ev_periodic *w) 4122ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
2453{ 4123{
2454 /* TODO: use adjustheap and recalculation */ 4124 /* TODO: use adjustheap and recalculation */
2455 ev_periodic_stop (EV_A_ w); 4125 ev_periodic_stop (EV_A_ w);
2456 ev_periodic_start (EV_A_ w); 4126 ev_periodic_start (EV_A_ w);
2457} 4127}
… …
2459 4129
2460#ifndef SA_RESTART 4130#ifndef SA_RESTART
2461# define SA_RESTART 0 4131# define SA_RESTART 0
2462#endif 4132#endif
2463 4133
4134#if EV_SIGNAL_ENABLE
4135
2464void noinline 4136noinline
4137void
2465ev_signal_start (EV_P_ ev_signal *w) 4138ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
2466{ 4139{
2467#if EV_MULTIPLICITY
2468 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2469#endif
2470 if (expect_false (ev_is_active (w))) 4140 if (expect_false (ev_is_active (w)))
2471 return; 4141 return;
2472 4142
2473 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0)); 4143 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2474 4144
2475 evpipe_init (EV_A); 4145#if EV_MULTIPLICITY
4146 assert (("libev: a signal must not be attached to two different loops",
4147 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2476 4148
2477 EV_FREQUENT_CHECK; 4149 signals [w->signum - 1].loop = EV_A;
4150 ECB_MEMORY_FENCE_RELEASE;
4151#endif
2478 4152
4153 EV_FREQUENT_CHECK;
4154
4155#if EV_USE_SIGNALFD
4156 if (sigfd == -2)
2479 { 4157 {
2480#ifndef _WIN32 4158 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2481 sigset_t full, prev; 4159 if (sigfd < 0 && errno == EINVAL)
2482 sigfillset (&full); 4160 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2483 sigprocmask (SIG_SETMASK, &full, &prev);
2484#endif
2485 4161
2486 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); 4162 if (sigfd >= 0)
4163 {
4164 fd_intern (sigfd); /* doing it twice will not hurt */
2487 4165
2488#ifndef _WIN32 4166 sigemptyset (&sigfd_set);
2489 sigprocmask (SIG_SETMASK, &prev, 0); 4167
2490#endif 4168 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
4169 ev_set_priority (&sigfd_w, EV_MAXPRI);
4170 ev_io_start (EV_A_ &sigfd_w);
4171 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
4172 }
2491 } 4173 }
4174
4175 if (sigfd >= 0)
4176 {
4177 /* TODO: check .head */
4178 sigaddset (&sigfd_set, w->signum);
4179 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
4180
4181 signalfd (sigfd, &sigfd_set, 0);
4182 }
4183#endif
2492 4184
2493 ev_start (EV_A_ (W)w, 1); 4185 ev_start (EV_A_ (W)w, 1);
2494 wlist_add (&signals [w->signum - 1].head, (WL)w); 4186 wlist_add (&signals [w->signum - 1].head, (WL)w);
2495 4187
2496 if (!((WL)w)->next) 4188 if (!((WL)w)->next)
4189# if EV_USE_SIGNALFD
4190 if (sigfd < 0) /*TODO*/
4191# endif
2497 { 4192 {
2498#if _WIN32 4193# ifdef _WIN32
4194 evpipe_init (EV_A);
4195
2499 signal (w->signum, ev_sighandler); 4196 signal (w->signum, ev_sighandler);
2500#else 4197# else
2501 struct sigaction sa; 4198 struct sigaction sa;
4199
4200 evpipe_init (EV_A);
4201
2502 sa.sa_handler = ev_sighandler; 4202 sa.sa_handler = ev_sighandler;
2503 sigfillset (&sa.sa_mask); 4203 sigfillset (&sa.sa_mask);
2504 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 4204 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2505 sigaction (w->signum, &sa, 0); 4205 sigaction (w->signum, &sa, 0);
4206
4207 if (origflags & EVFLAG_NOSIGMASK)
4208 {
4209 sigemptyset (&sa.sa_mask);
4210 sigaddset (&sa.sa_mask, w->signum);
4211 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
4212 }
2506#endif 4213#endif
2507 } 4214 }
2508 4215
2509 EV_FREQUENT_CHECK; 4216 EV_FREQUENT_CHECK;
2510} 4217}
2511 4218
2512void noinline 4219noinline
4220void
2513ev_signal_stop (EV_P_ ev_signal *w) 4221ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
2514{ 4222{
2515 clear_pending (EV_A_ (W)w); 4223 clear_pending (EV_A_ (W)w);
2516 if (expect_false (!ev_is_active (w))) 4224 if (expect_false (!ev_is_active (w)))
2517 return; 4225 return;
2518 4226
… …
2520 4228
2521 wlist_del (&signals [w->signum - 1].head, (WL)w); 4229 wlist_del (&signals [w->signum - 1].head, (WL)w);
2522 ev_stop (EV_A_ (W)w); 4230 ev_stop (EV_A_ (W)w);
2523 4231
2524 if (!signals [w->signum - 1].head) 4232 if (!signals [w->signum - 1].head)
4233 {
4234#if EV_MULTIPLICITY
4235 signals [w->signum - 1].loop = 0; /* unattach from signal */
4236#endif
4237#if EV_USE_SIGNALFD
4238 if (sigfd >= 0)
4239 {
4240 sigset_t ss;
4241
4242 sigemptyset (&ss);
4243 sigaddset (&ss, w->signum);
4244 sigdelset (&sigfd_set, w->signum);
4245
4246 signalfd (sigfd, &sigfd_set, 0);
4247 sigprocmask (SIG_UNBLOCK, &ss, 0);
4248 }
4249 else
4250#endif
2525 signal (w->signum, SIG_DFL); 4251 signal (w->signum, SIG_DFL);
4252 }
2526 4253
2527 EV_FREQUENT_CHECK; 4254 EV_FREQUENT_CHECK;
2528} 4255}
2529 4256
4257#endif
4258
4259#if EV_CHILD_ENABLE
4260
2530void 4261void
2531ev_child_start (EV_P_ ev_child *w) 4262ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
2532{ 4263{
2533#if EV_MULTIPLICITY 4264#if EV_MULTIPLICITY
2534 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4265 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2535#endif 4266#endif
2536 if (expect_false (ev_is_active (w))) 4267 if (expect_false (ev_is_active (w)))
2537 return; 4268 return;
2538 4269
2539 EV_FREQUENT_CHECK; 4270 EV_FREQUENT_CHECK;
2540 4271
2541 ev_start (EV_A_ (W)w, 1); 4272 ev_start (EV_A_ (W)w, 1);
2542 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4273 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2543 4274
2544 EV_FREQUENT_CHECK; 4275 EV_FREQUENT_CHECK;
2545} 4276}
2546 4277
2547void 4278void
2548ev_child_stop (EV_P_ ev_child *w) 4279ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
2549{ 4280{
2550 clear_pending (EV_A_ (W)w); 4281 clear_pending (EV_A_ (W)w);
2551 if (expect_false (!ev_is_active (w))) 4282 if (expect_false (!ev_is_active (w)))
2552 return; 4283 return;
2553 4284
2554 EV_FREQUENT_CHECK; 4285 EV_FREQUENT_CHECK;
2555 4286
2556 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4287 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2557 ev_stop (EV_A_ (W)w); 4288 ev_stop (EV_A_ (W)w);
2558 4289
2559 EV_FREQUENT_CHECK; 4290 EV_FREQUENT_CHECK;
2560} 4291}
4292
4293#endif
2561 4294
2562#if EV_STAT_ENABLE 4295#if EV_STAT_ENABLE
2563 4296
2564# ifdef _WIN32 4297# ifdef _WIN32
2565# undef lstat 4298# undef lstat
… …
2568 4301
2569#define DEF_STAT_INTERVAL 5.0074891 4302#define DEF_STAT_INTERVAL 5.0074891
2570#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4303#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2571#define MIN_STAT_INTERVAL 0.1074891 4304#define MIN_STAT_INTERVAL 0.1074891
2572 4305
2573static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4306noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2574 4307
2575#if EV_USE_INOTIFY 4308#if EV_USE_INOTIFY
2576# define EV_INOTIFY_BUFSIZE 8192
2577 4309
2578static void noinline 4310/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
4311# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
4312
4313noinline
4314static void
2579infy_add (EV_P_ ev_stat *w) 4315infy_add (EV_P_ ev_stat *w)
2580{ 4316{
2581 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); 4317 w->wd = inotify_add_watch (fs_fd, w->path,
4318 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4319 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4320 | IN_DONT_FOLLOW | IN_MASK_ADD);
2582 4321
2583 if (w->wd < 0) 4322 if (w->wd >= 0)
4323 {
4324 struct statfs sfs;
4325
4326 /* now local changes will be tracked by inotify, but remote changes won't */
4327 /* unless the filesystem is known to be local, we therefore still poll */
4328 /* also do poll on <2.6.25, but with normal frequency */
4329
4330 if (!fs_2625)
4331 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
4332 else if (!statfs (w->path, &sfs)
4333 && (sfs.f_type == 0x1373 /* devfs */
4334 || sfs.f_type == 0x4006 /* fat */
4335 || sfs.f_type == 0x4d44 /* msdos */
4336 || sfs.f_type == 0xEF53 /* ext2/3 */
4337 || sfs.f_type == 0x72b6 /* jffs2 */
4338 || sfs.f_type == 0x858458f6 /* ramfs */
4339 || sfs.f_type == 0x5346544e /* ntfs */
4340 || sfs.f_type == 0x3153464a /* jfs */
4341 || sfs.f_type == 0x9123683e /* btrfs */
4342 || sfs.f_type == 0x52654973 /* reiser3 */
4343 || sfs.f_type == 0x01021994 /* tmpfs */
4344 || sfs.f_type == 0x58465342 /* xfs */))
4345 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
4346 else
4347 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2584 { 4348 }
4349 else
4350 {
4351 /* can't use inotify, continue to stat */
2585 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4352 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2586 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2587 4353
2588 /* monitor some parent directory for speedup hints */ 4354 /* if path is not there, monitor some parent directory for speedup hints */
2589 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 4355 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2590 /* but an efficiency issue only */ 4356 /* but an efficiency issue only */
2591 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 4357 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2592 { 4358 {
2593 char path [4096]; 4359 char path [4096];
… …
2603 if (!pend || pend == path) 4369 if (!pend || pend == path)
2604 break; 4370 break;
2605 4371
2606 *pend = 0; 4372 *pend = 0;
2607 w->wd = inotify_add_watch (fs_fd, path, mask); 4373 w->wd = inotify_add_watch (fs_fd, path, mask);
2608 } 4374 }
2609 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 4375 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2610 } 4376 }
2611 } 4377 }
2612 4378
2613 if (w->wd >= 0) 4379 if (w->wd >= 0)
2614 {
2615 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4380 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2616 4381
2617 /* now local changes will be tracked by inotify, but remote changes won't */ 4382 /* now re-arm timer, if required */
2618 /* unless the filesystem it known to be local, we therefore still poll */ 4383 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2619 /* also do poll on <2.6.25, but with normal frequency */
2620 struct statfs sfs;
2621
2622 if (fs_2625 && !statfs (w->path, &sfs))
2623 if (sfs.f_type == 0x1373 /* devfs */
2624 || sfs.f_type == 0xEF53 /* ext2/3 */
2625 || sfs.f_type == 0x3153464a /* jfs */
2626 || sfs.f_type == 0x52654973 /* reiser3 */
2627 || sfs.f_type == 0x01021994 /* tempfs */
2628 || sfs.f_type == 0x58465342 /* xfs */)
2629 return;
2630
2631 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2632 ev_timer_again (EV_A_ &w->timer); 4384 ev_timer_again (EV_A_ &w->timer);
2633 } 4385 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2634} 4386}
2635 4387
2636static void noinline 4388noinline
4389static void
2637infy_del (EV_P_ ev_stat *w) 4390infy_del (EV_P_ ev_stat *w)
2638{ 4391{
2639 int slot; 4392 int slot;
2640 int wd = w->wd; 4393 int wd = w->wd;
2641 4394
2642 if (wd < 0) 4395 if (wd < 0)
2643 return; 4396 return;
2644 4397
2645 w->wd = -2; 4398 w->wd = -2;
2646 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 4399 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2647 wlist_del (&fs_hash [slot].head, (WL)w); 4400 wlist_del (&fs_hash [slot].head, (WL)w);
2648 4401
2649 /* remove this watcher, if others are watching it, they will rearm */ 4402 /* remove this watcher, if others are watching it, they will rearm */
2650 inotify_rm_watch (fs_fd, wd); 4403 inotify_rm_watch (fs_fd, wd);
2651} 4404}
2652 4405
2653static void noinline 4406noinline
4407static void
2654infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4408infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2655{ 4409{
2656 if (slot < 0) 4410 if (slot < 0)
2657 /* overflow, need to check for all hash slots */ 4411 /* overflow, need to check for all hash slots */
2658 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4412 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2659 infy_wd (EV_A_ slot, wd, ev); 4413 infy_wd (EV_A_ slot, wd, ev);
2660 else 4414 else
2661 { 4415 {
2662 WL w_; 4416 WL w_;
2663 4417
2664 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 4418 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2665 { 4419 {
2666 ev_stat *w = (ev_stat *)w_; 4420 ev_stat *w = (ev_stat *)w_;
2667 w_ = w_->next; /* lets us remove this watcher and all before it */ 4421 w_ = w_->next; /* lets us remove this watcher and all before it */
2668 4422
2669 if (w->wd == wd || wd == -1) 4423 if (w->wd == wd || wd == -1)
2670 { 4424 {
2671 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 4425 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2672 { 4426 {
2673 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4427 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2674 w->wd = -1; 4428 w->wd = -1;
2675 infy_add (EV_A_ w); /* re-add, no matter what */ 4429 infy_add (EV_A_ w); /* re-add, no matter what */
2676 } 4430 }
2677 4431
2678 stat_timer_cb (EV_A_ &w->timer, 0); 4432 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2683 4437
2684static void 4438static void
2685infy_cb (EV_P_ ev_io *w, int revents) 4439infy_cb (EV_P_ ev_io *w, int revents)
2686{ 4440{
2687 char buf [EV_INOTIFY_BUFSIZE]; 4441 char buf [EV_INOTIFY_BUFSIZE];
2688 struct inotify_event *ev = (struct inotify_event *)buf;
2689 int ofs; 4442 int ofs;
2690 int len = read (fs_fd, buf, sizeof (buf)); 4443 int len = read (fs_fd, buf, sizeof (buf));
2691 4444
2692 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 4445 for (ofs = 0; ofs < len; )
4446 {
4447 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2693 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4448 infy_wd (EV_A_ ev->wd, ev->wd, ev);
4449 ofs += sizeof (struct inotify_event) + ev->len;
4450 }
2694} 4451}
2695 4452
2696inline_size void 4453inline_size ecb_cold
4454void
2697check_2625 (EV_P) 4455ev_check_2625 (EV_P)
2698{ 4456{
2699 /* kernels < 2.6.25 are borked 4457 /* kernels < 2.6.25 are borked
2700 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4458 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2701 */ 4459 */
2702 struct utsname buf; 4460 if (ev_linux_version () < 0x020619)
2703 int major, minor, micro;
2704
2705 if (uname (&buf))
2706 return; 4461 return;
2707 4462
2708 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2709 return;
2710
2711 if (major < 2
2712 || (major == 2 && minor < 6)
2713 || (major == 2 && minor == 6 && micro < 25))
2714 return;
2715
2716 fs_2625 = 1; 4463 fs_2625 = 1;
4464}
4465
4466inline_size int
4467infy_newfd (void)
4468{
4469#if defined IN_CLOEXEC && defined IN_NONBLOCK
4470 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
4471 if (fd >= 0)
4472 return fd;
4473#endif
4474 return inotify_init ();
2717} 4475}
2718 4476
2719inline_size void 4477inline_size void
2720infy_init (EV_P) 4478infy_init (EV_P)
2721{ 4479{
2722 if (fs_fd != -2) 4480 if (fs_fd != -2)
2723 return; 4481 return;
2724 4482
2725 fs_fd = -1; 4483 fs_fd = -1;
2726 4484
2727 check_2625 (EV_A); 4485 ev_check_2625 (EV_A);
2728 4486
2729 fs_fd = inotify_init (); 4487 fs_fd = infy_newfd ();
2730 4488
2731 if (fs_fd >= 0) 4489 if (fs_fd >= 0)
2732 { 4490 {
4491 fd_intern (fs_fd);
2733 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 4492 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2734 ev_set_priority (&fs_w, EV_MAXPRI); 4493 ev_set_priority (&fs_w, EV_MAXPRI);
2735 ev_io_start (EV_A_ &fs_w); 4494 ev_io_start (EV_A_ &fs_w);
4495 ev_unref (EV_A);
2736 } 4496 }
2737} 4497}
2738 4498
2739inline_size void 4499inline_size void
2740infy_fork (EV_P) 4500infy_fork (EV_P)
… …
2742 int slot; 4502 int slot;
2743 4503
2744 if (fs_fd < 0) 4504 if (fs_fd < 0)
2745 return; 4505 return;
2746 4506
4507 ev_ref (EV_A);
4508 ev_io_stop (EV_A_ &fs_w);
2747 close (fs_fd); 4509 close (fs_fd);
2748 fs_fd = inotify_init (); 4510 fs_fd = infy_newfd ();
2749 4511
4512 if (fs_fd >= 0)
4513 {
4514 fd_intern (fs_fd);
4515 ev_io_set (&fs_w, fs_fd, EV_READ);
4516 ev_io_start (EV_A_ &fs_w);
4517 ev_unref (EV_A);
4518 }
4519
2750 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4520 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2751 { 4521 {
2752 WL w_ = fs_hash [slot].head; 4522 WL w_ = fs_hash [slot].head;
2753 fs_hash [slot].head = 0; 4523 fs_hash [slot].head = 0;
2754 4524
2755 while (w_) 4525 while (w_)
… …
2760 w->wd = -1; 4530 w->wd = -1;
2761 4531
2762 if (fs_fd >= 0) 4532 if (fs_fd >= 0)
2763 infy_add (EV_A_ w); /* re-add, no matter what */ 4533 infy_add (EV_A_ w); /* re-add, no matter what */
2764 else 4534 else
4535 {
4536 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
4537 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2765 ev_timer_again (EV_A_ &w->timer); 4538 ev_timer_again (EV_A_ &w->timer);
4539 if (ev_is_active (&w->timer)) ev_unref (EV_A);
4540 }
2766 } 4541 }
2767 } 4542 }
2768} 4543}
2769 4544
2770#endif 4545#endif
… …
2774#else 4549#else
2775# define EV_LSTAT(p,b) lstat (p, b) 4550# define EV_LSTAT(p,b) lstat (p, b)
2776#endif 4551#endif
2777 4552
2778void 4553void
2779ev_stat_stat (EV_P_ ev_stat *w) 4554ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
2780{ 4555{
2781 if (lstat (w->path, &w->attr) < 0) 4556 if (lstat (w->path, &w->attr) < 0)
2782 w->attr.st_nlink = 0; 4557 w->attr.st_nlink = 0;
2783 else if (!w->attr.st_nlink) 4558 else if (!w->attr.st_nlink)
2784 w->attr.st_nlink = 1; 4559 w->attr.st_nlink = 1;
2785} 4560}
2786 4561
2787static void noinline 4562noinline
4563static void
2788stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4564stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2789{ 4565{
2790 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4566 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2791 4567
2792 /* we copy this here each the time so that */ 4568 ev_statdata prev = w->attr;
2793 /* prev has the old value when the callback gets invoked */
2794 w->prev = w->attr;
2795 ev_stat_stat (EV_A_ w); 4569 ev_stat_stat (EV_A_ w);
2796 4570
2797 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 4571 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2798 if ( 4572 if (
2799 w->prev.st_dev != w->attr.st_dev 4573 prev.st_dev != w->attr.st_dev
2800 || w->prev.st_ino != w->attr.st_ino 4574 || prev.st_ino != w->attr.st_ino
2801 || w->prev.st_mode != w->attr.st_mode 4575 || prev.st_mode != w->attr.st_mode
2802 || w->prev.st_nlink != w->attr.st_nlink 4576 || prev.st_nlink != w->attr.st_nlink
2803 || w->prev.st_uid != w->attr.st_uid 4577 || prev.st_uid != w->attr.st_uid
2804 || w->prev.st_gid != w->attr.st_gid 4578 || prev.st_gid != w->attr.st_gid
2805 || w->prev.st_rdev != w->attr.st_rdev 4579 || prev.st_rdev != w->attr.st_rdev
2806 || w->prev.st_size != w->attr.st_size 4580 || prev.st_size != w->attr.st_size
2807 || w->prev.st_atime != w->attr.st_atime 4581 || prev.st_atime != w->attr.st_atime
2808 || w->prev.st_mtime != w->attr.st_mtime 4582 || prev.st_mtime != w->attr.st_mtime
2809 || w->prev.st_ctime != w->attr.st_ctime 4583 || prev.st_ctime != w->attr.st_ctime
2810 ) { 4584 ) {
4585 /* we only update w->prev on actual differences */
4586 /* in case we test more often than invoke the callback, */
4587 /* to ensure that prev is always different to attr */
4588 w->prev = prev;
4589
2811 #if EV_USE_INOTIFY 4590 #if EV_USE_INOTIFY
2812 if (fs_fd >= 0) 4591 if (fs_fd >= 0)
2813 { 4592 {
2814 infy_del (EV_A_ w); 4593 infy_del (EV_A_ w);
2815 infy_add (EV_A_ w); 4594 infy_add (EV_A_ w);
… …
2820 ev_feed_event (EV_A_ w, EV_STAT); 4599 ev_feed_event (EV_A_ w, EV_STAT);
2821 } 4600 }
2822} 4601}
2823 4602
2824void 4603void
2825ev_stat_start (EV_P_ ev_stat *w) 4604ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
2826{ 4605{
2827 if (expect_false (ev_is_active (w))) 4606 if (expect_false (ev_is_active (w)))
2828 return; 4607 return;
2829 4608
2830 ev_stat_stat (EV_A_ w); 4609 ev_stat_stat (EV_A_ w);
… …
2840 4619
2841 if (fs_fd >= 0) 4620 if (fs_fd >= 0)
2842 infy_add (EV_A_ w); 4621 infy_add (EV_A_ w);
2843 else 4622 else
2844#endif 4623#endif
4624 {
2845 ev_timer_again (EV_A_ &w->timer); 4625 ev_timer_again (EV_A_ &w->timer);
4626 ev_unref (EV_A);
4627 }
2846 4628
2847 ev_start (EV_A_ (W)w, 1); 4629 ev_start (EV_A_ (W)w, 1);
2848 4630
2849 EV_FREQUENT_CHECK; 4631 EV_FREQUENT_CHECK;
2850} 4632}
2851 4633
2852void 4634void
2853ev_stat_stop (EV_P_ ev_stat *w) 4635ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
2854{ 4636{
2855 clear_pending (EV_A_ (W)w); 4637 clear_pending (EV_A_ (W)w);
2856 if (expect_false (!ev_is_active (w))) 4638 if (expect_false (!ev_is_active (w)))
2857 return; 4639 return;
2858 4640
2859 EV_FREQUENT_CHECK; 4641 EV_FREQUENT_CHECK;
2860 4642
2861#if EV_USE_INOTIFY 4643#if EV_USE_INOTIFY
2862 infy_del (EV_A_ w); 4644 infy_del (EV_A_ w);
2863#endif 4645#endif
4646
4647 if (ev_is_active (&w->timer))
4648 {
4649 ev_ref (EV_A);
2864 ev_timer_stop (EV_A_ &w->timer); 4650 ev_timer_stop (EV_A_ &w->timer);
4651 }
2865 4652
2866 ev_stop (EV_A_ (W)w); 4653 ev_stop (EV_A_ (W)w);
2867 4654
2868 EV_FREQUENT_CHECK; 4655 EV_FREQUENT_CHECK;
2869} 4656}
2870#endif 4657#endif
2871 4658
2872#if EV_IDLE_ENABLE 4659#if EV_IDLE_ENABLE
2873void 4660void
2874ev_idle_start (EV_P_ ev_idle *w) 4661ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
2875{ 4662{
2876 if (expect_false (ev_is_active (w))) 4663 if (expect_false (ev_is_active (w)))
2877 return; 4664 return;
2878 4665
2879 pri_adjust (EV_A_ (W)w); 4666 pri_adjust (EV_A_ (W)w);
… …
2884 int active = ++idlecnt [ABSPRI (w)]; 4671 int active = ++idlecnt [ABSPRI (w)];
2885 4672
2886 ++idleall; 4673 ++idleall;
2887 ev_start (EV_A_ (W)w, active); 4674 ev_start (EV_A_ (W)w, active);
2888 4675
2889 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 4676 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
2890 idles [ABSPRI (w)][active - 1] = w; 4677 idles [ABSPRI (w)][active - 1] = w;
2891 } 4678 }
2892 4679
2893 EV_FREQUENT_CHECK; 4680 EV_FREQUENT_CHECK;
2894} 4681}
2895 4682
2896void 4683void
2897ev_idle_stop (EV_P_ ev_idle *w) 4684ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
2898{ 4685{
2899 clear_pending (EV_A_ (W)w); 4686 clear_pending (EV_A_ (W)w);
2900 if (expect_false (!ev_is_active (w))) 4687 if (expect_false (!ev_is_active (w)))
2901 return; 4688 return;
2902 4689
… …
2914 4701
2915 EV_FREQUENT_CHECK; 4702 EV_FREQUENT_CHECK;
2916} 4703}
2917#endif 4704#endif
2918 4705
4706#if EV_PREPARE_ENABLE
2919void 4707void
2920ev_prepare_start (EV_P_ ev_prepare *w) 4708ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
2921{ 4709{
2922 if (expect_false (ev_is_active (w))) 4710 if (expect_false (ev_is_active (w)))
2923 return; 4711 return;
2924 4712
2925 EV_FREQUENT_CHECK; 4713 EV_FREQUENT_CHECK;
2926 4714
2927 ev_start (EV_A_ (W)w, ++preparecnt); 4715 ev_start (EV_A_ (W)w, ++preparecnt);
2928 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4716 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
2929 prepares [preparecnt - 1] = w; 4717 prepares [preparecnt - 1] = w;
2930 4718
2931 EV_FREQUENT_CHECK; 4719 EV_FREQUENT_CHECK;
2932} 4720}
2933 4721
2934void 4722void
2935ev_prepare_stop (EV_P_ ev_prepare *w) 4723ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
2936{ 4724{
2937 clear_pending (EV_A_ (W)w); 4725 clear_pending (EV_A_ (W)w);
2938 if (expect_false (!ev_is_active (w))) 4726 if (expect_false (!ev_is_active (w)))
2939 return; 4727 return;
2940 4728
… …
2949 4737
2950 ev_stop (EV_A_ (W)w); 4738 ev_stop (EV_A_ (W)w);
2951 4739
2952 EV_FREQUENT_CHECK; 4740 EV_FREQUENT_CHECK;
2953} 4741}
4742#endif
2954 4743
4744#if EV_CHECK_ENABLE
2955void 4745void
2956ev_check_start (EV_P_ ev_check *w) 4746ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
2957{ 4747{
2958 if (expect_false (ev_is_active (w))) 4748 if (expect_false (ev_is_active (w)))
2959 return; 4749 return;
2960 4750
2961 EV_FREQUENT_CHECK; 4751 EV_FREQUENT_CHECK;
2962 4752
2963 ev_start (EV_A_ (W)w, ++checkcnt); 4753 ev_start (EV_A_ (W)w, ++checkcnt);
2964 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 4754 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
2965 checks [checkcnt - 1] = w; 4755 checks [checkcnt - 1] = w;
2966 4756
2967 EV_FREQUENT_CHECK; 4757 EV_FREQUENT_CHECK;
2968} 4758}
2969 4759
2970void 4760void
2971ev_check_stop (EV_P_ ev_check *w) 4761ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
2972{ 4762{
2973 clear_pending (EV_A_ (W)w); 4763 clear_pending (EV_A_ (W)w);
2974 if (expect_false (!ev_is_active (w))) 4764 if (expect_false (!ev_is_active (w)))
2975 return; 4765 return;
2976 4766
… …
2985 4775
2986 ev_stop (EV_A_ (W)w); 4776 ev_stop (EV_A_ (W)w);
2987 4777
2988 EV_FREQUENT_CHECK; 4778 EV_FREQUENT_CHECK;
2989} 4779}
4780#endif
2990 4781
2991#if EV_EMBED_ENABLE 4782#if EV_EMBED_ENABLE
2992void noinline 4783noinline
4784void
2993ev_embed_sweep (EV_P_ ev_embed *w) 4785ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
2994{ 4786{
2995 ev_loop (w->other, EVLOOP_NONBLOCK); 4787 ev_run (w->other, EVRUN_NOWAIT);
2996} 4788}
2997 4789
2998static void 4790static void
2999embed_io_cb (EV_P_ ev_io *io, int revents) 4791embed_io_cb (EV_P_ ev_io *io, int revents)
3000{ 4792{
3001 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4793 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3002 4794
3003 if (ev_cb (w)) 4795 if (ev_cb (w))
3004 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4796 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3005 else 4797 else
3006 ev_loop (w->other, EVLOOP_NONBLOCK); 4798 ev_run (w->other, EVRUN_NOWAIT);
3007} 4799}
3008 4800
3009static void 4801static void
3010embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4802embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3011{ 4803{
3012 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 4804 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
3013 4805
3014 { 4806 {
3015 struct ev_loop *loop = w->other; 4807 EV_P = w->other;
3016 4808
3017 while (fdchangecnt) 4809 while (fdchangecnt)
3018 { 4810 {
3019 fd_reify (EV_A); 4811 fd_reify (EV_A);
3020 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4812 ev_run (EV_A_ EVRUN_NOWAIT);
3021 } 4813 }
3022 } 4814 }
3023} 4815}
3024 4816
3025static void 4817static void
… …
3028 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 4820 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3029 4821
3030 ev_embed_stop (EV_A_ w); 4822 ev_embed_stop (EV_A_ w);
3031 4823
3032 { 4824 {
3033 struct ev_loop *loop = w->other; 4825 EV_P = w->other;
3034 4826
3035 ev_loop_fork (EV_A); 4827 ev_loop_fork (EV_A);
3036 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4828 ev_run (EV_A_ EVRUN_NOWAIT);
3037 } 4829 }
3038 4830
3039 ev_embed_start (EV_A_ w); 4831 ev_embed_start (EV_A_ w);
3040} 4832}
3041 4833
… …
3046 ev_idle_stop (EV_A_ idle); 4838 ev_idle_stop (EV_A_ idle);
3047} 4839}
3048#endif 4840#endif
3049 4841
3050void 4842void
3051ev_embed_start (EV_P_ ev_embed *w) 4843ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
3052{ 4844{
3053 if (expect_false (ev_is_active (w))) 4845 if (expect_false (ev_is_active (w)))
3054 return; 4846 return;
3055 4847
3056 { 4848 {
3057 struct ev_loop *loop = w->other; 4849 EV_P = w->other;
3058 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4850 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
3059 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 4851 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3060 } 4852 }
3061 4853
3062 EV_FREQUENT_CHECK; 4854 EV_FREQUENT_CHECK;
… …
3077 4869
3078 EV_FREQUENT_CHECK; 4870 EV_FREQUENT_CHECK;
3079} 4871}
3080 4872
3081void 4873void
3082ev_embed_stop (EV_P_ ev_embed *w) 4874ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
3083{ 4875{
3084 clear_pending (EV_A_ (W)w); 4876 clear_pending (EV_A_ (W)w);
3085 if (expect_false (!ev_is_active (w))) 4877 if (expect_false (!ev_is_active (w)))
3086 return; 4878 return;
3087 4879
… …
3089 4881
3090 ev_io_stop (EV_A_ &w->io); 4882 ev_io_stop (EV_A_ &w->io);
3091 ev_prepare_stop (EV_A_ &w->prepare); 4883 ev_prepare_stop (EV_A_ &w->prepare);
3092 ev_fork_stop (EV_A_ &w->fork); 4884 ev_fork_stop (EV_A_ &w->fork);
3093 4885
4886 ev_stop (EV_A_ (W)w);
4887
3094 EV_FREQUENT_CHECK; 4888 EV_FREQUENT_CHECK;
3095} 4889}
3096#endif 4890#endif
3097 4891
3098#if EV_FORK_ENABLE 4892#if EV_FORK_ENABLE
3099void 4893void
3100ev_fork_start (EV_P_ ev_fork *w) 4894ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
3101{ 4895{
3102 if (expect_false (ev_is_active (w))) 4896 if (expect_false (ev_is_active (w)))
3103 return; 4897 return;
3104 4898
3105 EV_FREQUENT_CHECK; 4899 EV_FREQUENT_CHECK;
3106 4900
3107 ev_start (EV_A_ (W)w, ++forkcnt); 4901 ev_start (EV_A_ (W)w, ++forkcnt);
3108 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 4902 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
3109 forks [forkcnt - 1] = w; 4903 forks [forkcnt - 1] = w;
3110 4904
3111 EV_FREQUENT_CHECK; 4905 EV_FREQUENT_CHECK;
3112} 4906}
3113 4907
3114void 4908void
3115ev_fork_stop (EV_P_ ev_fork *w) 4909ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
3116{ 4910{
3117 clear_pending (EV_A_ (W)w); 4911 clear_pending (EV_A_ (W)w);
3118 if (expect_false (!ev_is_active (w))) 4912 if (expect_false (!ev_is_active (w)))
3119 return; 4913 return;
3120 4914
… …
3131 4925
3132 EV_FREQUENT_CHECK; 4926 EV_FREQUENT_CHECK;
3133} 4927}
3134#endif 4928#endif
3135 4929
3136#if EV_ASYNC_ENABLE 4930#if EV_CLEANUP_ENABLE
3137void 4931void
3138ev_async_start (EV_P_ ev_async *w) 4932ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
3139{ 4933{
3140 if (expect_false (ev_is_active (w))) 4934 if (expect_false (ev_is_active (w)))
3141 return; 4935 return;
3142 4936
3143 evpipe_init (EV_A);
3144
3145 EV_FREQUENT_CHECK; 4937 EV_FREQUENT_CHECK;
3146 4938
3147 ev_start (EV_A_ (W)w, ++asynccnt); 4939 ev_start (EV_A_ (W)w, ++cleanupcnt);
3148 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 4940 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
3149 asyncs [asynccnt - 1] = w; 4941 cleanups [cleanupcnt - 1] = w;
3150 4942
4943 /* cleanup watchers should never keep a refcount on the loop */
4944 ev_unref (EV_A);
3151 EV_FREQUENT_CHECK; 4945 EV_FREQUENT_CHECK;
3152} 4946}
3153 4947
3154void 4948void
3155ev_async_stop (EV_P_ ev_async *w) 4949ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
3156{ 4950{
3157 clear_pending (EV_A_ (W)w); 4951 clear_pending (EV_A_ (W)w);
3158 if (expect_false (!ev_is_active (w))) 4952 if (expect_false (!ev_is_active (w)))
3159 return; 4953 return;
3160 4954
3161 EV_FREQUENT_CHECK; 4955 EV_FREQUENT_CHECK;
4956 ev_ref (EV_A);
4957
4958 {
4959 int active = ev_active (w);
4960
4961 cleanups [active - 1] = cleanups [--cleanupcnt];
4962 ev_active (cleanups [active - 1]) = active;
4963 }
4964
4965 ev_stop (EV_A_ (W)w);
4966
4967 EV_FREQUENT_CHECK;
4968}
4969#endif
4970
4971#if EV_ASYNC_ENABLE
4972void
4973ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
4974{
4975 if (expect_false (ev_is_active (w)))
4976 return;
4977
4978 w->sent = 0;
4979
4980 evpipe_init (EV_A);
4981
4982 EV_FREQUENT_CHECK;
4983
4984 ev_start (EV_A_ (W)w, ++asynccnt);
4985 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
4986 asyncs [asynccnt - 1] = w;
4987
4988 EV_FREQUENT_CHECK;
4989}
4990
4991void
4992ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
4993{
4994 clear_pending (EV_A_ (W)w);
4995 if (expect_false (!ev_is_active (w)))
4996 return;
4997
4998 EV_FREQUENT_CHECK;
3162 4999
3163 { 5000 {
3164 int active = ev_active (w); 5001 int active = ev_active (w);
3165 5002
3166 asyncs [active - 1] = asyncs [--asynccnt]; 5003 asyncs [active - 1] = asyncs [--asynccnt];
… …
3171 5008
3172 EV_FREQUENT_CHECK; 5009 EV_FREQUENT_CHECK;
3173} 5010}
3174 5011
3175void 5012void
3176ev_async_send (EV_P_ ev_async *w) 5013ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
3177{ 5014{
3178 w->sent = 1; 5015 w->sent = 1;
3179 evpipe_write (EV_A_ &gotasync); 5016 evpipe_write (EV_A_ &async_pending);
3180} 5017}
3181#endif 5018#endif
3182 5019
3183/*****************************************************************************/ 5020/*****************************************************************************/
3184 5021
… …
3218 5055
3219 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5056 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3220} 5057}
3221 5058
3222void 5059void
3223ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 5060ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
3224{ 5061{
3225 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5062 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3226
3227 if (expect_false (!once))
3228 {
3229 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
3230 return;
3231 }
3232 5063
3233 once->cb = cb; 5064 once->cb = cb;
3234 once->arg = arg; 5065 once->arg = arg;
3235 5066
3236 ev_init (&once->io, once_cb_io); 5067 ev_init (&once->io, once_cb_io);
… …
3249} 5080}
3250 5081
3251/*****************************************************************************/ 5082/*****************************************************************************/
3252 5083
3253#if EV_WALK_ENABLE 5084#if EV_WALK_ENABLE
5085ecb_cold
3254void 5086void
3255ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 5087ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
3256{ 5088{
3257 int i, j; 5089 int i, j;
3258 ev_watcher_list *wl, *wn; 5090 ev_watcher_list *wl, *wn;
3259 5091
3260 if (types & (EV_IO | EV_EMBED)) 5092 if (types & (EV_IO | EV_EMBED))
… …
3303 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 5135 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3304#endif 5136#endif
3305 5137
3306#if EV_IDLE_ENABLE 5138#if EV_IDLE_ENABLE
3307 if (types & EV_IDLE) 5139 if (types & EV_IDLE)
3308 for (j = NUMPRI; i--; ) 5140 for (j = NUMPRI; j--; )
3309 for (i = idlecnt [j]; i--; ) 5141 for (i = idlecnt [j]; i--; )
3310 cb (EV_A_ EV_IDLE, idles [j][i]); 5142 cb (EV_A_ EV_IDLE, idles [j][i]);
3311#endif 5143#endif
3312 5144
3313#if EV_FORK_ENABLE 5145#if EV_FORK_ENABLE
… …
3321 if (types & EV_ASYNC) 5153 if (types & EV_ASYNC)
3322 for (i = asynccnt; i--; ) 5154 for (i = asynccnt; i--; )
3323 cb (EV_A_ EV_ASYNC, asyncs [i]); 5155 cb (EV_A_ EV_ASYNC, asyncs [i]);
3324#endif 5156#endif
3325 5157
5158#if EV_PREPARE_ENABLE
3326 if (types & EV_PREPARE) 5159 if (types & EV_PREPARE)
3327 for (i = preparecnt; i--; ) 5160 for (i = preparecnt; i--; )
3328#if EV_EMBED_ENABLE 5161# if EV_EMBED_ENABLE
3329 if (ev_cb (prepares [i]) != embed_prepare_cb) 5162 if (ev_cb (prepares [i]) != embed_prepare_cb)
3330#endif 5163# endif
3331 cb (EV_A_ EV_PREPARE, prepares [i]); 5164 cb (EV_A_ EV_PREPARE, prepares [i]);
5165#endif
3332 5166
5167#if EV_CHECK_ENABLE
3333 if (types & EV_CHECK) 5168 if (types & EV_CHECK)
3334 for (i = checkcnt; i--; ) 5169 for (i = checkcnt; i--; )
3335 cb (EV_A_ EV_CHECK, checks [i]); 5170 cb (EV_A_ EV_CHECK, checks [i]);
5171#endif
3336 5172
5173#if EV_SIGNAL_ENABLE
3337 if (types & EV_SIGNAL) 5174 if (types & EV_SIGNAL)
3338 for (i = 0; i < signalmax; ++i) 5175 for (i = 0; i < EV_NSIG - 1; ++i)
3339 for (wl = signals [i].head; wl; ) 5176 for (wl = signals [i].head; wl; )
3340 { 5177 {
3341 wn = wl->next; 5178 wn = wl->next;
3342 cb (EV_A_ EV_SIGNAL, wl); 5179 cb (EV_A_ EV_SIGNAL, wl);
3343 wl = wn; 5180 wl = wn;
3344 } 5181 }
5182#endif
3345 5183
5184#if EV_CHILD_ENABLE
3346 if (types & EV_CHILD) 5185 if (types & EV_CHILD)
3347 for (i = EV_PID_HASHSIZE; i--; ) 5186 for (i = (EV_PID_HASHSIZE); i--; )
3348 for (wl = childs [i]; wl; ) 5187 for (wl = childs [i]; wl; )
3349 { 5188 {
3350 wn = wl->next; 5189 wn = wl->next;
3351 cb (EV_A_ EV_CHILD, wl); 5190 cb (EV_A_ EV_CHILD, wl);
3352 wl = wn; 5191 wl = wn;
3353 } 5192 }
5193#endif
3354/* EV_STAT 0x00001000 /* stat data changed */ 5194/* EV_STAT 0x00001000 /* stat data changed */
3355/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 5195/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3356} 5196}
3357#endif 5197#endif
3358 5198
3359#if EV_MULTIPLICITY 5199#if EV_MULTIPLICITY
3360 #include "ev_wrap.h" 5200 #include "ev_wrap.h"
3361#endif 5201#endif
3362 5202
3363#ifdef __cplusplus
3364}
3365#endif
3366

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