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Comparing libev/ev.c (file contents):
Revision 1.294 by root, Wed Jul 8 02:46:05 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 not 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
1363unsigned int 2847unsigned int
1364ev_loop_depth (EV_P) 2848ev_depth (EV_P) EV_NOEXCEPT
1365{ 2849{
1366 return loop_depth; 2850 return loop_depth;
1367} 2851}
1368 2852
1369void 2853void
1370ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2854ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1371{ 2855{
1372 io_blocktime = interval; 2856 io_blocktime = interval;
1373} 2857}
1374 2858
1375void 2859void
1376ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2860ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1377{ 2861{
1378 timeout_blocktime = interval; 2862 timeout_blocktime = interval;
1379} 2863}
1380 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
1381/* initialise a loop structure, must be zero-initialised */ 2891/* initialise a loop structure, must be zero-initialised */
1382static void noinline 2892noinline ecb_cold
2893static void
1383loop_init (EV_P_ unsigned int flags) 2894loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
1384{ 2895{
1385 if (!backend) 2896 if (!backend)
1386 { 2897 {
2898 origflags = flags;
2899
1387#if EV_USE_REALTIME 2900#if EV_USE_REALTIME
1388 if (!have_realtime) 2901 if (!have_realtime)
1389 { 2902 {
1390 struct timespec ts; 2903 struct timespec ts;
1391 2904
… …
1402 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 2915 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1403 have_monotonic = 1; 2916 have_monotonic = 1;
1404 } 2917 }
1405#endif 2918#endif
1406 2919
1407 ev_rt_now = ev_time ();
1408 mn_now = get_clock ();
1409 now_floor = mn_now;
1410 rtmn_diff = ev_rt_now - mn_now;
1411
1412 io_blocktime = 0.;
1413 timeout_blocktime = 0.;
1414 backend = 0;
1415 backend_fd = -1;
1416 gotasync = 0;
1417#if EV_USE_INOTIFY
1418 fs_fd = -2;
1419#endif
1420
1421 /* pid check not overridable via env */ 2920 /* pid check not overridable via env */
1422#ifndef _WIN32 2921#ifndef _WIN32
1423 if (flags & EVFLAG_FORKCHECK) 2922 if (flags & EVFLAG_FORKCHECK)
1424 curpid = getpid (); 2923 curpid = getpid ();
1425#endif 2924#endif
… …
1427 if (!(flags & EVFLAG_NOENV) 2926 if (!(flags & EVFLAG_NOENV)
1428 && !enable_secure () 2927 && !enable_secure ()
1429 && getenv ("LIBEV_FLAGS")) 2928 && getenv ("LIBEV_FLAGS"))
1430 flags = atoi (getenv ("LIBEV_FLAGS")); 2929 flags = atoi (getenv ("LIBEV_FLAGS"));
1431 2930
1432 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))
1433 flags |= ev_recommended_backends (); 2959 flags |= ev_recommended_backends ();
1434 2960
2961#if EV_USE_IOCP
2962 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2963#endif
1435#if EV_USE_PORT 2964#if EV_USE_PORT
1436 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2965 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1437#endif 2966#endif
1438#if EV_USE_KQUEUE 2967#if EV_USE_KQUEUE
1439 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);
1440#endif 2972#endif
1441#if EV_USE_EPOLL 2973#if EV_USE_EPOLL
1442 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 2974 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
1443#endif 2975#endif
1444#if EV_USE_POLL 2976#if EV_USE_POLL
1445 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 2977 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
1446#endif 2978#endif
1447#if EV_USE_SELECT 2979#if EV_USE_SELECT
1448 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2980 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
1449#endif 2981#endif
1450 2982
1451 ev_prepare_init (&pending_w, pendingcb); 2983 ev_prepare_init (&pending_w, pendingcb);
1452 2984
2985#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1453 ev_init (&pipe_w, pipecb); 2986 ev_init (&pipe_w, pipecb);
1454 ev_set_priority (&pipe_w, EV_MAXPRI); 2987 ev_set_priority (&pipe_w, EV_MAXPRI);
2988#endif
1455 } 2989 }
1456} 2990}
1457 2991
1458/* free up a loop structure */ 2992/* free up a loop structure */
1459static void noinline 2993ecb_cold
2994void
1460loop_destroy (EV_P) 2995ev_loop_destroy (EV_P)
1461{ 2996{
1462 int i; 2997 int i;
1463 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
1464 if (ev_is_active (&pipe_w)) 3022 if (ev_is_active (&pipe_w))
1465 { 3023 {
1466 ev_ref (EV_A); /* signal watcher */ 3024 /*ev_ref (EV_A);*/
1467 ev_io_stop (EV_A_ &pipe_w); 3025 /*ev_io_stop (EV_A_ &pipe_w);*/
1468 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
1469#if EV_USE_EVENTFD 3031#if EV_USE_SIGNALFD
1470 if (evfd >= 0) 3032 if (ev_is_active (&sigfd_w))
1471 close (evfd); 3033 close (sigfd);
1472#endif 3034#endif
1473
1474 if (evpipe [0] >= 0)
1475 {
1476 close (evpipe [0]);
1477 close (evpipe [1]);
1478 }
1479 }
1480 3035
1481#if EV_USE_INOTIFY 3036#if EV_USE_INOTIFY
1482 if (fs_fd >= 0) 3037 if (fs_fd >= 0)
1483 close (fs_fd); 3038 close (fs_fd);
1484#endif 3039#endif
1485 3040
1486 if (backend_fd >= 0) 3041 if (backend_fd >= 0)
1487 close (backend_fd); 3042 close (backend_fd);
1488 3043
3044#if EV_USE_IOCP
3045 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
3046#endif
1489#if EV_USE_PORT 3047#if EV_USE_PORT
1490 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3048 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1491#endif 3049#endif
1492#if EV_USE_KQUEUE 3050#if EV_USE_KQUEUE
1493 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);
1494#endif 3055#endif
1495#if EV_USE_EPOLL 3056#if EV_USE_EPOLL
1496 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3057 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
1497#endif 3058#endif
1498#if EV_USE_POLL 3059#if EV_USE_POLL
1499 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3060 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
1500#endif 3061#endif
1501#if EV_USE_SELECT 3062#if EV_USE_SELECT
1502 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3063 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
1503#endif 3064#endif
1504 3065
1505 for (i = NUMPRI; i--; ) 3066 for (i = NUMPRI; i--; )
1506 { 3067 {
1507 array_free (pending, [i]); 3068 array_free (pending, [i]);
1508#if EV_IDLE_ENABLE 3069#if EV_IDLE_ENABLE
1509 array_free (idle, [i]); 3070 array_free (idle, [i]);
1510#endif 3071#endif
1511 } 3072 }
1512 3073
1513 ev_free (anfds); anfdmax = 0; 3074 ev_free (anfds); anfds = 0; anfdmax = 0;
1514 3075
1515 /* have to use the microsoft-never-gets-it-right macro */ 3076 /* have to use the microsoft-never-gets-it-right macro */
1516 array_free (rfeed, EMPTY); 3077 array_free (rfeed, EMPTY);
1517 array_free (fdchange, EMPTY); 3078 array_free (fdchange, EMPTY);
1518 array_free (timer, EMPTY); 3079 array_free (timer, EMPTY);
… …
1520 array_free (periodic, EMPTY); 3081 array_free (periodic, EMPTY);
1521#endif 3082#endif
1522#if EV_FORK_ENABLE 3083#if EV_FORK_ENABLE
1523 array_free (fork, EMPTY); 3084 array_free (fork, EMPTY);
1524#endif 3085#endif
3086#if EV_CLEANUP_ENABLE
3087 array_free (cleanup, EMPTY);
3088#endif
1525 array_free (prepare, EMPTY); 3089 array_free (prepare, EMPTY);
1526 array_free (check, EMPTY); 3090 array_free (check, EMPTY);
1527#if EV_ASYNC_ENABLE 3091#if EV_ASYNC_ENABLE
1528 array_free (async, EMPTY); 3092 array_free (async, EMPTY);
1529#endif 3093#endif
1530 3094
1531 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
1532} 3105}
1533 3106
1534#if EV_USE_INOTIFY 3107#if EV_USE_INOTIFY
1535inline_size void infy_fork (EV_P); 3108inline_size void infy_fork (EV_P);
1536#endif 3109#endif
1537 3110
1538inline_size void 3111inline_size void
1539loop_fork (EV_P) 3112loop_fork (EV_P)
1540{ 3113{
1541#if EV_USE_PORT 3114#if EV_USE_PORT
1542 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3115 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1543#endif 3116#endif
1544#if EV_USE_KQUEUE 3117#if EV_USE_KQUEUE
1545 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);
1546#endif 3122#endif
1547#if EV_USE_EPOLL 3123#if EV_USE_EPOLL
1548 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3124 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
1549#endif 3125#endif
1550#if EV_USE_INOTIFY 3126#if EV_USE_INOTIFY
1551 infy_fork (EV_A); 3127 infy_fork (EV_A);
1552#endif 3128#endif
1553 3129
3130#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1554 if (ev_is_active (&pipe_w)) 3131 if (ev_is_active (&pipe_w) && postfork != 2)
1555 { 3132 {
1556 /* this "locks" the handlers against writing to the pipe */ 3133 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1557 /* while we modify the fd vars */
1558 gotsig = 1;
1559#if EV_ASYNC_ENABLE
1560 gotasync = 1;
1561#endif
1562 3134
1563 ev_ref (EV_A); 3135 ev_ref (EV_A);
1564 ev_io_stop (EV_A_ &pipe_w); 3136 ev_io_stop (EV_A_ &pipe_w);
1565 3137
1566#if EV_USE_EVENTFD
1567 if (evfd >= 0)
1568 close (evfd);
1569#endif
1570
1571 if (evpipe [0] >= 0) 3138 if (evpipe [0] >= 0)
1572 { 3139 EV_WIN32_CLOSE_FD (evpipe [0]);
1573 close (evpipe [0]);
1574 close (evpipe [1]);
1575 }
1576 3140
1577 evpipe_init (EV_A); 3141 evpipe_init (EV_A);
1578 /* now iterate over everything, in case we missed something */ 3142 /* iterate over everything, in case we missed something before */
1579 pipecb (EV_A_ &pipe_w, EV_READ); 3143 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1580 } 3144 }
3145#endif
1581 3146
1582 postfork = 0; 3147 postfork = 0;
1583} 3148}
1584 3149
1585#if EV_MULTIPLICITY 3150#if EV_MULTIPLICITY
1586 3151
3152ecb_cold
1587struct ev_loop * 3153struct ev_loop *
1588ev_loop_new (unsigned int flags) 3154ev_loop_new (unsigned int flags) EV_NOEXCEPT
1589{ 3155{
1590 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));
1591 3157
1592 memset (loop, 0, sizeof (struct ev_loop)); 3158 memset (EV_A, 0, sizeof (struct ev_loop));
1593
1594 loop_init (EV_A_ flags); 3159 loop_init (EV_A_ flags);
1595 3160
1596 if (ev_backend (EV_A)) 3161 if (ev_backend (EV_A))
1597 return loop; 3162 return EV_A;
1598 3163
3164 ev_free (EV_A);
1599 return 0; 3165 return 0;
1600} 3166}
1601 3167
1602void 3168#endif /* multiplicity */
1603ev_loop_destroy (EV_P)
1604{
1605 loop_destroy (EV_A);
1606 ev_free (loop);
1607}
1608
1609void
1610ev_loop_fork (EV_P)
1611{
1612 postfork = 1; /* must be in line with ev_default_fork */
1613}
1614 3169
1615#if EV_VERIFY 3170#if EV_VERIFY
1616static void noinline 3171noinline ecb_cold
3172static void
1617verify_watcher (EV_P_ W w) 3173verify_watcher (EV_P_ W w)
1618{ 3174{
1619 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));
1620 3176
1621 if (w->pending) 3177 if (w->pending)
1622 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));
1623} 3179}
1624 3180
1625static void noinline 3181noinline ecb_cold
3182static void
1626verify_heap (EV_P_ ANHE *heap, int N) 3183verify_heap (EV_P_ ANHE *heap, int N)
1627{ 3184{
1628 int i; 3185 int i;
1629 3186
1630 for (i = HEAP0; i < N + HEAP0; ++i) 3187 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1635 3192
1636 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3193 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1637 } 3194 }
1638} 3195}
1639 3196
1640static void noinline 3197noinline ecb_cold
3198static void
1641array_verify (EV_P_ W *ws, int cnt) 3199array_verify (EV_P_ W *ws, int cnt)
1642{ 3200{
1643 while (cnt--) 3201 while (cnt--)
1644 { 3202 {
1645 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3203 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1646 verify_watcher (EV_A_ ws [cnt]); 3204 verify_watcher (EV_A_ ws [cnt]);
1647 } 3205 }
1648} 3206}
1649#endif 3207#endif
1650 3208
1651void 3209#if EV_FEATURE_API
1652ev_loop_verify (EV_P) 3210void ecb_cold
3211ev_verify (EV_P) EV_NOEXCEPT
1653{ 3212{
1654#if EV_VERIFY 3213#if EV_VERIFY
1655 int i; 3214 int i;
1656 WL w; 3215 WL w, w2;
1657 3216
1658 assert (activecnt >= -1); 3217 assert (activecnt >= -1);
1659 3218
1660 assert (fdchangemax >= fdchangecnt); 3219 assert (fdchangemax >= fdchangecnt);
1661 for (i = 0; i < fdchangecnt; ++i) 3220 for (i = 0; i < fdchangecnt; ++i)
1662 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3221 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1663 3222
1664 assert (anfdmax >= 0); 3223 assert (anfdmax >= 0);
1665 for (i = 0; i < anfdmax; ++i) 3224 for (i = 0; i < anfdmax; ++i)
3225 {
3226 int j = 0;
3227
1666 for (w = anfds [i].head; w; w = w->next) 3228 for (w = w2 = anfds [i].head; w; w = w->next)
1667 { 3229 {
1668 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
1669 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));
1670 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));
1671 } 3240 }
3241 }
1672 3242
1673 assert (timermax >= timercnt); 3243 assert (timermax >= timercnt);
1674 verify_heap (EV_A_ timers, timercnt); 3244 verify_heap (EV_A_ timers, timercnt);
1675 3245
1676#if EV_PERIODIC_ENABLE 3246#if EV_PERIODIC_ENABLE
… …
1691#if EV_FORK_ENABLE 3261#if EV_FORK_ENABLE
1692 assert (forkmax >= forkcnt); 3262 assert (forkmax >= forkcnt);
1693 array_verify (EV_A_ (W *)forks, forkcnt); 3263 array_verify (EV_A_ (W *)forks, forkcnt);
1694#endif 3264#endif
1695 3265
3266#if EV_CLEANUP_ENABLE
3267 assert (cleanupmax >= cleanupcnt);
3268 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
3269#endif
3270
1696#if EV_ASYNC_ENABLE 3271#if EV_ASYNC_ENABLE
1697 assert (asyncmax >= asynccnt); 3272 assert (asyncmax >= asynccnt);
1698 array_verify (EV_A_ (W *)asyncs, asynccnt); 3273 array_verify (EV_A_ (W *)asyncs, asynccnt);
1699#endif 3274#endif
1700 3275
3276#if EV_PREPARE_ENABLE
1701 assert (preparemax >= preparecnt); 3277 assert (preparemax >= preparecnt);
1702 array_verify (EV_A_ (W *)prepares, preparecnt); 3278 array_verify (EV_A_ (W *)prepares, preparecnt);
3279#endif
1703 3280
3281#if EV_CHECK_ENABLE
1704 assert (checkmax >= checkcnt); 3282 assert (checkmax >= checkcnt);
1705 array_verify (EV_A_ (W *)checks, checkcnt); 3283 array_verify (EV_A_ (W *)checks, checkcnt);
3284#endif
1706 3285
1707# if 0 3286# if 0
3287#if EV_CHILD_ENABLE
1708 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)
1709 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 3289 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
3290#endif
1710# endif 3291# endif
1711#endif 3292#endif
1712} 3293}
1713 3294#endif
1714#endif /* multiplicity */
1715 3295
1716#if EV_MULTIPLICITY 3296#if EV_MULTIPLICITY
3297ecb_cold
1717struct ev_loop * 3298struct ev_loop *
1718ev_default_loop_init (unsigned int flags)
1719#else 3299#else
1720int 3300int
3301#endif
1721ev_default_loop (unsigned int flags) 3302ev_default_loop (unsigned int flags) EV_NOEXCEPT
1722#endif
1723{ 3303{
1724 if (!ev_default_loop_ptr) 3304 if (!ev_default_loop_ptr)
1725 { 3305 {
1726#if EV_MULTIPLICITY 3306#if EV_MULTIPLICITY
1727 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 3307 EV_P = ev_default_loop_ptr = &default_loop_struct;
1728#else 3308#else
1729 ev_default_loop_ptr = 1; 3309 ev_default_loop_ptr = 1;
1730#endif 3310#endif
1731 3311
1732 loop_init (EV_A_ flags); 3312 loop_init (EV_A_ flags);
1733 3313
1734 if (ev_backend (EV_A)) 3314 if (ev_backend (EV_A))
1735 { 3315 {
1736#ifndef _WIN32 3316#if EV_CHILD_ENABLE
1737 ev_signal_init (&childev, childcb, SIGCHLD); 3317 ev_signal_init (&childev, childcb, SIGCHLD);
1738 ev_set_priority (&childev, EV_MAXPRI); 3318 ev_set_priority (&childev, EV_MAXPRI);
1739 ev_signal_start (EV_A_ &childev); 3319 ev_signal_start (EV_A_ &childev);
1740 ev_unref (EV_A); /* child watcher should not keep loop alive */ 3320 ev_unref (EV_A); /* child watcher should not keep loop alive */
1741#endif 3321#endif
… …
1746 3326
1747 return ev_default_loop_ptr; 3327 return ev_default_loop_ptr;
1748} 3328}
1749 3329
1750void 3330void
1751ev_default_destroy (void) 3331ev_loop_fork (EV_P) EV_NOEXCEPT
1752{ 3332{
1753#if EV_MULTIPLICITY 3333 postfork = 1;
1754 struct ev_loop *loop = ev_default_loop_ptr;
1755#endif
1756
1757 ev_default_loop_ptr = 0;
1758
1759#ifndef _WIN32
1760 ev_ref (EV_A); /* child watcher */
1761 ev_signal_stop (EV_A_ &childev);
1762#endif
1763
1764 loop_destroy (EV_A);
1765}
1766
1767void
1768ev_default_fork (void)
1769{
1770#if EV_MULTIPLICITY
1771 struct ev_loop *loop = ev_default_loop_ptr;
1772#endif
1773
1774 postfork = 1; /* must be in line with ev_loop_fork */
1775} 3334}
1776 3335
1777/*****************************************************************************/ 3336/*****************************************************************************/
1778 3337
1779void 3338void
1780ev_invoke (EV_P_ void *w, int revents) 3339ev_invoke (EV_P_ void *w, int revents)
1781{ 3340{
1782 EV_CB_INVOKE ((W)w, revents); 3341 EV_CB_INVOKE ((W)w, revents);
1783} 3342}
1784 3343
1785inline_speed void 3344unsigned int
1786call_pending (EV_P) 3345ev_pending_count (EV_P) EV_NOEXCEPT
1787{ 3346{
1788 int pri; 3347 int pri;
3348 unsigned int count = 0;
1789 3349
1790 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 */
1791 while (pendingcnt [pri]) 3367 while (pendingcnt [pendingpri])
1792 { 3368 {
1793 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3369 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
1794 3370
1795 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1796 /* ^ this is no longer true, as pending_w could be here */
1797
1798 p->w->pending = 0; 3371 p->w->pending = 0;
1799 EV_CB_INVOKE (p->w, p->events); 3372 EV_CB_INVOKE (p->w, p->events);
1800 EV_FREQUENT_CHECK; 3373 EV_FREQUENT_CHECK;
1801 } 3374 }
3375 }
3376 while (pendingpri);
1802} 3377}
1803 3378
1804#if EV_IDLE_ENABLE 3379#if EV_IDLE_ENABLE
1805/* make idle watchers pending. this handles the "call-idle */ 3380/* make idle watchers pending. this handles the "call-idle */
1806/* only when higher priorities are idle" logic */ 3381/* only when higher priorities are idle" logic */
… …
1858 EV_FREQUENT_CHECK; 3433 EV_FREQUENT_CHECK;
1859 feed_reverse (EV_A_ (W)w); 3434 feed_reverse (EV_A_ (W)w);
1860 } 3435 }
1861 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 3436 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1862 3437
1863 feed_reverse_done (EV_A_ EV_TIMEOUT); 3438 feed_reverse_done (EV_A_ EV_TIMER);
1864 } 3439 }
1865} 3440}
1866 3441
1867#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
1868/* make periodics pending */ 3469/* make periodics pending */
1869inline_size void 3470inline_size void
1870periodics_reify (EV_P) 3471periodics_reify (EV_P)
1871{ 3472{
1872 EV_FREQUENT_CHECK; 3473 EV_FREQUENT_CHECK;
1873 3474
1874 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3475 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1875 { 3476 {
1876 int feed_count = 0;
1877
1878 do 3477 do
1879 { 3478 {
1880 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3479 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
1881 3480
1882 /*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)));*/
… …
1891 ANHE_at_cache (periodics [HEAP0]); 3490 ANHE_at_cache (periodics [HEAP0]);
1892 downheap (periodics, periodiccnt, HEAP0); 3491 downheap (periodics, periodiccnt, HEAP0);
1893 } 3492 }
1894 else if (w->interval) 3493 else if (w->interval)
1895 { 3494 {
1896 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3495 periodic_recalc (EV_A_ w);
1897 /* if next trigger time is not sufficiently in the future, put it there */
1898 /* this might happen because of floating point inexactness */
1899 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1900 {
1901 ev_at (w) += w->interval;
1902
1903 /* if interval is unreasonably low we might still have a time in the past */
1904 /* so correct this. this will make the periodic very inexact, but the user */
1905 /* has effectively asked to get triggered more often than possible */
1906 if (ev_at (w) < ev_rt_now)
1907 ev_at (w) = ev_rt_now;
1908 }
1909
1910 ANHE_at_cache (periodics [HEAP0]); 3496 ANHE_at_cache (periodics [HEAP0]);
1911 downheap (periodics, periodiccnt, HEAP0); 3497 downheap (periodics, periodiccnt, HEAP0);
1912 } 3498 }
1913 else 3499 else
1914 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3500 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
1921 feed_reverse_done (EV_A_ EV_PERIODIC); 3507 feed_reverse_done (EV_A_ EV_PERIODIC);
1922 } 3508 }
1923} 3509}
1924 3510
1925/* simply recalculate all periodics */ 3511/* simply recalculate all periodics */
1926/* 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? */
1927static void noinline 3513noinline ecb_cold
3514static void
1928periodics_reschedule (EV_P) 3515periodics_reschedule (EV_P)
1929{ 3516{
1930 int i; 3517 int i;
1931 3518
1932 /* adjust periodics after time jump */ 3519 /* adjust periodics after time jump */
… …
1935 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3522 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1936 3523
1937 if (w->reschedule_cb) 3524 if (w->reschedule_cb)
1938 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3525 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1939 else if (w->interval) 3526 else if (w->interval)
1940 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3527 periodic_recalc (EV_A_ w);
1941 3528
1942 ANHE_at_cache (periodics [i]); 3529 ANHE_at_cache (periodics [i]);
1943 } 3530 }
1944 3531
1945 reheap (periodics, periodiccnt); 3532 reheap (periodics, periodiccnt);
1946} 3533}
1947#endif 3534#endif
1948 3535
1949/* adjust all timers by a given offset */ 3536/* adjust all timers by a given offset */
1950static void noinline 3537noinline ecb_cold
3538static void
1951timers_reschedule (EV_P_ ev_tstamp adjust) 3539timers_reschedule (EV_P_ ev_tstamp adjust)
1952{ 3540{
1953 int i; 3541 int i;
1954 3542
1955 for (i = 0; i < timercnt; ++i) 3543 for (i = 0; i < timercnt; ++i)
… …
1959 ANHE_at_cache (*he); 3547 ANHE_at_cache (*he);
1960 } 3548 }
1961} 3549}
1962 3550
1963/* fetch new monotonic and realtime times from the kernel */ 3551/* fetch new monotonic and realtime times from the kernel */
1964/* also detetc if there was a timejump, and act accordingly */ 3552/* also detect if there was a timejump, and act accordingly */
1965inline_speed void 3553inline_speed void
1966time_update (EV_P_ ev_tstamp max_block) 3554time_update (EV_P_ ev_tstamp max_block)
1967{ 3555{
1968#if EV_USE_MONOTONIC 3556#if EV_USE_MONOTONIC
1969 if (expect_true (have_monotonic)) 3557 if (expect_true (have_monotonic))
… …
1992 * 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
1993 * in the unlikely event of having been preempted here. 3581 * in the unlikely event of having been preempted here.
1994 */ 3582 */
1995 for (i = 4; --i; ) 3583 for (i = 4; --i; )
1996 { 3584 {
3585 ev_tstamp diff;
1997 rtmn_diff = ev_rt_now - mn_now; 3586 rtmn_diff = ev_rt_now - mn_now;
1998 3587
3588 diff = odiff - rtmn_diff;
3589
1999 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3590 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2000 return; /* all is well */ 3591 return; /* all is well */
2001 3592
2002 ev_rt_now = ev_time (); 3593 ev_rt_now = ev_time ();
2003 mn_now = get_clock (); 3594 mn_now = get_clock ();
2004 now_floor = mn_now; 3595 now_floor = mn_now;
… …
2026 3617
2027 mn_now = ev_rt_now; 3618 mn_now = ev_rt_now;
2028 } 3619 }
2029} 3620}
2030 3621
2031void 3622int
2032ev_loop (EV_P_ int flags) 3623ev_run (EV_P_ int flags)
2033{ 3624{
3625#if EV_FEATURE_API
2034 ++loop_depth; 3626 ++loop_depth;
3627#endif
2035 3628
3629 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
3630
2036 loop_done = EVUNLOOP_CANCEL; 3631 loop_done = EVBREAK_CANCEL;
2037 3632
2038 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 */
2039 3634
2040 do 3635 do
2041 { 3636 {
2042#if EV_VERIFY >= 2 3637#if EV_VERIFY >= 2
2043 ev_loop_verify (EV_A); 3638 ev_verify (EV_A);
2044#endif 3639#endif
2045 3640
2046#ifndef _WIN32 3641#ifndef _WIN32
2047 if (expect_false (curpid)) /* penalise the forking check even more */ 3642 if (expect_false (curpid)) /* penalise the forking check even more */
2048 if (expect_false (getpid () != curpid)) 3643 if (expect_false (getpid () != curpid))
… …
2056 /* we might have forked, so queue fork handlers */ 3651 /* we might have forked, so queue fork handlers */
2057 if (expect_false (postfork)) 3652 if (expect_false (postfork))
2058 if (forkcnt) 3653 if (forkcnt)
2059 { 3654 {
2060 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3655 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2061 call_pending (EV_A); 3656 EV_INVOKE_PENDING;
2062 } 3657 }
2063#endif 3658#endif
2064 3659
3660#if EV_PREPARE_ENABLE
2065 /* queue prepare watchers (and execute them) */ 3661 /* queue prepare watchers (and execute them) */
2066 if (expect_false (preparecnt)) 3662 if (expect_false (preparecnt))
2067 { 3663 {
2068 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3664 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2069 call_pending (EV_A); 3665 EV_INVOKE_PENDING;
2070 } 3666 }
3667#endif
3668
3669 if (expect_false (loop_done))
3670 break;
2071 3671
2072 /* we might have forked, so reify kernel state if necessary */ 3672 /* we might have forked, so reify kernel state if necessary */
2073 if (expect_false (postfork)) 3673 if (expect_false (postfork))
2074 loop_fork (EV_A); 3674 loop_fork (EV_A);
2075 3675
… …
2079 /* calculate blocking time */ 3679 /* calculate blocking time */
2080 { 3680 {
2081 ev_tstamp waittime = 0.; 3681 ev_tstamp waittime = 0.;
2082 ev_tstamp sleeptime = 0.; 3682 ev_tstamp sleeptime = 0.;
2083 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
2084 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3695 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2085 { 3696 {
2086 /* remember old timestamp for io_blocktime calculation */
2087 ev_tstamp prev_mn_now = mn_now;
2088
2089 /* update time to cancel out callback processing overhead */
2090 time_update (EV_A_ 1e100);
2091
2092 waittime = MAX_BLOCKTIME; 3697 waittime = MAX_BLOCKTIME;
2093 3698
2094 if (timercnt) 3699 if (timercnt)
2095 { 3700 {
2096 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3701 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2097 if (waittime > to) waittime = to; 3702 if (waittime > to) waittime = to;
2098 } 3703 }
2099 3704
2100#if EV_PERIODIC_ENABLE 3705#if EV_PERIODIC_ENABLE
2101 if (periodiccnt) 3706 if (periodiccnt)
2102 { 3707 {
2103 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3708 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2104 if (waittime > to) waittime = to; 3709 if (waittime > to) waittime = to;
2105 } 3710 }
2106#endif 3711#endif
2107 3712
2108 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3713 /* don't let timeouts decrease the waittime below timeout_blocktime */
2109 if (expect_false (waittime < timeout_blocktime)) 3714 if (expect_false (waittime < timeout_blocktime))
2110 waittime = timeout_blocktime; 3715 waittime = timeout_blocktime;
3716
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;
2111 3721
2112 /* extra check because io_blocktime is commonly 0 */ 3722 /* extra check because io_blocktime is commonly 0 */
2113 if (expect_false (io_blocktime)) 3723 if (expect_false (io_blocktime))
2114 { 3724 {
2115 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3725 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2116 3726
2117 if (sleeptime > waittime - backend_fudge) 3727 if (sleeptime > waittime - backend_mintime)
2118 sleeptime = waittime - backend_fudge; 3728 sleeptime = waittime - backend_mintime;
2119 3729
2120 if (expect_true (sleeptime > 0.)) 3730 if (expect_true (sleeptime > 0.))
2121 { 3731 {
2122 ev_sleep (sleeptime); 3732 ev_sleep (sleeptime);
2123 waittime -= sleeptime; 3733 waittime -= sleeptime;
2124 } 3734 }
2125 } 3735 }
2126 } 3736 }
2127 3737
3738#if EV_FEATURE_API
2128 ++loop_count; 3739 ++loop_count;
3740#endif
3741 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2129 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
2130 3754
2131 /* update ev_rt_now, do magic */ 3755 /* update ev_rt_now, do magic */
2132 time_update (EV_A_ waittime + sleeptime); 3756 time_update (EV_A_ waittime + sleeptime);
2133 } 3757 }
2134 3758
… …
2141#if EV_IDLE_ENABLE 3765#if EV_IDLE_ENABLE
2142 /* queue idle watchers unless other events are pending */ 3766 /* queue idle watchers unless other events are pending */
2143 idle_reify (EV_A); 3767 idle_reify (EV_A);
2144#endif 3768#endif
2145 3769
3770#if EV_CHECK_ENABLE
2146 /* queue check watchers, to be executed first */ 3771 /* queue check watchers, to be executed first */
2147 if (expect_false (checkcnt)) 3772 if (expect_false (checkcnt))
2148 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3773 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3774#endif
2149 3775
2150 call_pending (EV_A); 3776 EV_INVOKE_PENDING;
2151 } 3777 }
2152 while (expect_true ( 3778 while (expect_true (
2153 activecnt 3779 activecnt
2154 && !loop_done 3780 && !loop_done
2155 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3781 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2156 )); 3782 ));
2157 3783
2158 if (loop_done == EVUNLOOP_ONE) 3784 if (loop_done == EVBREAK_ONE)
2159 loop_done = EVUNLOOP_CANCEL; 3785 loop_done = EVBREAK_CANCEL;
2160 3786
3787#if EV_FEATURE_API
2161 --loop_depth; 3788 --loop_depth;
2162} 3789#endif
2163 3790
3791 return activecnt;
3792}
3793
2164void 3794void
2165ev_unloop (EV_P_ int how) 3795ev_break (EV_P_ int how) EV_NOEXCEPT
2166{ 3796{
2167 loop_done = how; 3797 loop_done = how;
2168} 3798}
2169 3799
2170void 3800void
2171ev_ref (EV_P) 3801ev_ref (EV_P) EV_NOEXCEPT
2172{ 3802{
2173 ++activecnt; 3803 ++activecnt;
2174} 3804}
2175 3805
2176void 3806void
2177ev_unref (EV_P) 3807ev_unref (EV_P) EV_NOEXCEPT
2178{ 3808{
2179 --activecnt; 3809 --activecnt;
2180} 3810}
2181 3811
2182void 3812void
2183ev_now_update (EV_P) 3813ev_now_update (EV_P) EV_NOEXCEPT
2184{ 3814{
2185 time_update (EV_A_ 1e100); 3815 time_update (EV_A_ 1e100);
2186} 3816}
2187 3817
2188void 3818void
2189ev_suspend (EV_P) 3819ev_suspend (EV_P) EV_NOEXCEPT
2190{ 3820{
2191 ev_now_update (EV_A); 3821 ev_now_update (EV_A);
2192} 3822}
2193 3823
2194void 3824void
2195ev_resume (EV_P) 3825ev_resume (EV_P) EV_NOEXCEPT
2196{ 3826{
2197 ev_tstamp mn_prev = mn_now; 3827 ev_tstamp mn_prev = mn_now;
2198 3828
2199 ev_now_update (EV_A); 3829 ev_now_update (EV_A);
2200 timers_reschedule (EV_A_ mn_now - mn_prev); 3830 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2217inline_size void 3847inline_size void
2218wlist_del (WL *head, WL elem) 3848wlist_del (WL *head, WL elem)
2219{ 3849{
2220 while (*head) 3850 while (*head)
2221 { 3851 {
2222 if (*head == elem) 3852 if (expect_true (*head == elem))
2223 { 3853 {
2224 *head = elem->next; 3854 *head = elem->next;
2225 return; 3855 break;
2226 } 3856 }
2227 3857
2228 head = &(*head)->next; 3858 head = &(*head)->next;
2229 } 3859 }
2230} 3860}
… …
2239 w->pending = 0; 3869 w->pending = 0;
2240 } 3870 }
2241} 3871}
2242 3872
2243int 3873int
2244ev_clear_pending (EV_P_ void *w) 3874ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
2245{ 3875{
2246 W w_ = (W)w; 3876 W w_ = (W)w;
2247 int pending = w_->pending; 3877 int pending = w_->pending;
2248 3878
2249 if (expect_true (pending)) 3879 if (expect_true (pending))
… …
2258} 3888}
2259 3889
2260inline_size void 3890inline_size void
2261pri_adjust (EV_P_ W w) 3891pri_adjust (EV_P_ W w)
2262{ 3892{
2263 int pri = w->priority; 3893 int pri = ev_priority (w);
2264 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 3894 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2265 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 3895 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2266 w->priority = pri; 3896 ev_set_priority (w, pri);
2267} 3897}
2268 3898
2269inline_speed void 3899inline_speed void
2270ev_start (EV_P_ W w, int active) 3900ev_start (EV_P_ W w, int active)
2271{ 3901{
… …
2281 w->active = 0; 3911 w->active = 0;
2282} 3912}
2283 3913
2284/*****************************************************************************/ 3914/*****************************************************************************/
2285 3915
2286void noinline 3916noinline
3917void
2287ev_io_start (EV_P_ ev_io *w) 3918ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
2288{ 3919{
2289 int fd = w->fd; 3920 int fd = w->fd;
2290 3921
2291 if (expect_false (ev_is_active (w))) 3922 if (expect_false (ev_is_active (w)))
2292 return; 3923 return;
2293 3924
2294 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 3925 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2295 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))));
2296 3927
3928#if EV_VERIFY >= 2
3929 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
3930#endif
2297 EV_FREQUENT_CHECK; 3931 EV_FREQUENT_CHECK;
2298 3932
2299 ev_start (EV_A_ (W)w, 1); 3933 ev_start (EV_A_ (W)w, 1);
2300 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3934 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
2301 wlist_add (&anfds[fd].head, (WL)w); 3935 wlist_add (&anfds[fd].head, (WL)w);
2302 3936
3937 /* common bug, apparently */
3938 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3939
2303 fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1); 3940 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2304 w->events &= ~EV__IOFDSET; 3941 w->events &= ~EV__IOFDSET;
2305 3942
2306 EV_FREQUENT_CHECK; 3943 EV_FREQUENT_CHECK;
2307} 3944}
2308 3945
2309void noinline 3946noinline
3947void
2310ev_io_stop (EV_P_ ev_io *w) 3948ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
2311{ 3949{
2312 clear_pending (EV_A_ (W)w); 3950 clear_pending (EV_A_ (W)w);
2313 if (expect_false (!ev_is_active (w))) 3951 if (expect_false (!ev_is_active (w)))
2314 return; 3952 return;
2315 3953
2316 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));
2317 3955
3956#if EV_VERIFY >= 2
3957 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
3958#endif
2318 EV_FREQUENT_CHECK; 3959 EV_FREQUENT_CHECK;
2319 3960
2320 wlist_del (&anfds[w->fd].head, (WL)w); 3961 wlist_del (&anfds[w->fd].head, (WL)w);
2321 ev_stop (EV_A_ (W)w); 3962 ev_stop (EV_A_ (W)w);
2322 3963
2323 fd_change (EV_A_ w->fd, 1); 3964 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2324 3965
2325 EV_FREQUENT_CHECK; 3966 EV_FREQUENT_CHECK;
2326} 3967}
2327 3968
2328void noinline 3969noinline
3970void
2329ev_timer_start (EV_P_ ev_timer *w) 3971ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
2330{ 3972{
2331 if (expect_false (ev_is_active (w))) 3973 if (expect_false (ev_is_active (w)))
2332 return; 3974 return;
2333 3975
2334 ev_at (w) += mn_now; 3976 ev_at (w) += mn_now;
… …
2337 3979
2338 EV_FREQUENT_CHECK; 3980 EV_FREQUENT_CHECK;
2339 3981
2340 ++timercnt; 3982 ++timercnt;
2341 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 3983 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
2342 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 3984 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
2343 ANHE_w (timers [ev_active (w)]) = (WT)w; 3985 ANHE_w (timers [ev_active (w)]) = (WT)w;
2344 ANHE_at_cache (timers [ev_active (w)]); 3986 ANHE_at_cache (timers [ev_active (w)]);
2345 upheap (timers, ev_active (w)); 3987 upheap (timers, ev_active (w));
2346 3988
2347 EV_FREQUENT_CHECK; 3989 EV_FREQUENT_CHECK;
2348 3990
2349 /*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));*/
2350} 3992}
2351 3993
2352void noinline 3994noinline
3995void
2353ev_timer_stop (EV_P_ ev_timer *w) 3996ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
2354{ 3997{
2355 clear_pending (EV_A_ (W)w); 3998 clear_pending (EV_A_ (W)w);
2356 if (expect_false (!ev_is_active (w))) 3999 if (expect_false (!ev_is_active (w)))
2357 return; 4000 return;
2358 4001
… …
2370 timers [active] = timers [timercnt + HEAP0]; 4013 timers [active] = timers [timercnt + HEAP0];
2371 adjustheap (timers, timercnt, active); 4014 adjustheap (timers, timercnt, active);
2372 } 4015 }
2373 } 4016 }
2374 4017
2375 EV_FREQUENT_CHECK;
2376
2377 ev_at (w) -= mn_now; 4018 ev_at (w) -= mn_now;
2378 4019
2379 ev_stop (EV_A_ (W)w); 4020 ev_stop (EV_A_ (W)w);
2380}
2381 4021
4022 EV_FREQUENT_CHECK;
4023}
4024
2382void noinline 4025noinline
4026void
2383ev_timer_again (EV_P_ ev_timer *w) 4027ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
2384{ 4028{
2385 EV_FREQUENT_CHECK; 4029 EV_FREQUENT_CHECK;
4030
4031 clear_pending (EV_A_ (W)w);
2386 4032
2387 if (ev_is_active (w)) 4033 if (ev_is_active (w))
2388 { 4034 {
2389 if (w->repeat) 4035 if (w->repeat)
2390 { 4036 {
… …
2402 } 4048 }
2403 4049
2404 EV_FREQUENT_CHECK; 4050 EV_FREQUENT_CHECK;
2405} 4051}
2406 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
2407#if EV_PERIODIC_ENABLE 4059#if EV_PERIODIC_ENABLE
2408void noinline 4060noinline
4061void
2409ev_periodic_start (EV_P_ ev_periodic *w) 4062ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
2410{ 4063{
2411 if (expect_false (ev_is_active (w))) 4064 if (expect_false (ev_is_active (w)))
2412 return; 4065 return;
2413 4066
2414 if (w->reschedule_cb) 4067 if (w->reschedule_cb)
2415 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4068 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2416 else if (w->interval) 4069 else if (w->interval)
2417 { 4070 {
2418 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.));
2419 /* this formula differs from the one in periodic_reify because we do not always round up */ 4072 periodic_recalc (EV_A_ w);
2420 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2421 } 4073 }
2422 else 4074 else
2423 ev_at (w) = w->offset; 4075 ev_at (w) = w->offset;
2424 4076
2425 EV_FREQUENT_CHECK; 4077 EV_FREQUENT_CHECK;
2426 4078
2427 ++periodiccnt; 4079 ++periodiccnt;
2428 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4080 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2429 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4081 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
2430 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4082 ANHE_w (periodics [ev_active (w)]) = (WT)w;
2431 ANHE_at_cache (periodics [ev_active (w)]); 4083 ANHE_at_cache (periodics [ev_active (w)]);
2432 upheap (periodics, ev_active (w)); 4084 upheap (periodics, ev_active (w));
2433 4085
2434 EV_FREQUENT_CHECK; 4086 EV_FREQUENT_CHECK;
2435 4087
2436 /*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));*/
2437} 4089}
2438 4090
2439void noinline 4091noinline
4092void
2440ev_periodic_stop (EV_P_ ev_periodic *w) 4093ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
2441{ 4094{
2442 clear_pending (EV_A_ (W)w); 4095 clear_pending (EV_A_ (W)w);
2443 if (expect_false (!ev_is_active (w))) 4096 if (expect_false (!ev_is_active (w)))
2444 return; 4097 return;
2445 4098
… …
2457 periodics [active] = periodics [periodiccnt + HEAP0]; 4110 periodics [active] = periodics [periodiccnt + HEAP0];
2458 adjustheap (periodics, periodiccnt, active); 4111 adjustheap (periodics, periodiccnt, active);
2459 } 4112 }
2460 } 4113 }
2461 4114
2462 EV_FREQUENT_CHECK;
2463
2464 ev_stop (EV_A_ (W)w); 4115 ev_stop (EV_A_ (W)w);
2465}
2466 4116
4117 EV_FREQUENT_CHECK;
4118}
4119
2467void noinline 4120noinline
4121void
2468ev_periodic_again (EV_P_ ev_periodic *w) 4122ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
2469{ 4123{
2470 /* TODO: use adjustheap and recalculation */ 4124 /* TODO: use adjustheap and recalculation */
2471 ev_periodic_stop (EV_A_ w); 4125 ev_periodic_stop (EV_A_ w);
2472 ev_periodic_start (EV_A_ w); 4126 ev_periodic_start (EV_A_ w);
2473} 4127}
… …
2475 4129
2476#ifndef SA_RESTART 4130#ifndef SA_RESTART
2477# define SA_RESTART 0 4131# define SA_RESTART 0
2478#endif 4132#endif
2479 4133
4134#if EV_SIGNAL_ENABLE
4135
2480void noinline 4136noinline
4137void
2481ev_signal_start (EV_P_ ev_signal *w) 4138ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
2482{ 4139{
2483#if EV_MULTIPLICITY
2484 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2485#endif
2486 if (expect_false (ev_is_active (w))) 4140 if (expect_false (ev_is_active (w)))
2487 return; 4141 return;
2488 4142
2489 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));
2490 4144
2491 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));
2492 4148
2493 EV_FREQUENT_CHECK; 4149 signals [w->signum - 1].loop = EV_A;
4150 ECB_MEMORY_FENCE_RELEASE;
4151#endif
2494 4152
4153 EV_FREQUENT_CHECK;
4154
4155#if EV_USE_SIGNALFD
4156 if (sigfd == -2)
2495 { 4157 {
2496#ifndef _WIN32 4158 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2497 sigset_t full, prev; 4159 if (sigfd < 0 && errno == EINVAL)
2498 sigfillset (&full); 4160 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2499 sigprocmask (SIG_SETMASK, &full, &prev);
2500#endif
2501 4161
2502 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 */
2503 4165
2504#ifndef _WIN32 4166 sigemptyset (&sigfd_set);
2505 sigprocmask (SIG_SETMASK, &prev, 0); 4167
2506#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 }
2507 } 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
2508 4184
2509 ev_start (EV_A_ (W)w, 1); 4185 ev_start (EV_A_ (W)w, 1);
2510 wlist_add (&signals [w->signum - 1].head, (WL)w); 4186 wlist_add (&signals [w->signum - 1].head, (WL)w);
2511 4187
2512 if (!((WL)w)->next) 4188 if (!((WL)w)->next)
4189# if EV_USE_SIGNALFD
4190 if (sigfd < 0) /*TODO*/
4191# endif
2513 { 4192 {
2514#if _WIN32 4193# ifdef _WIN32
4194 evpipe_init (EV_A);
4195
2515 signal (w->signum, ev_sighandler); 4196 signal (w->signum, ev_sighandler);
2516#else 4197# else
2517 struct sigaction sa; 4198 struct sigaction sa;
4199
4200 evpipe_init (EV_A);
4201
2518 sa.sa_handler = ev_sighandler; 4202 sa.sa_handler = ev_sighandler;
2519 sigfillset (&sa.sa_mask); 4203 sigfillset (&sa.sa_mask);
2520 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 */
2521 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 }
2522#endif 4213#endif
2523 } 4214 }
2524 4215
2525 EV_FREQUENT_CHECK; 4216 EV_FREQUENT_CHECK;
2526} 4217}
2527 4218
2528void noinline 4219noinline
4220void
2529ev_signal_stop (EV_P_ ev_signal *w) 4221ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
2530{ 4222{
2531 clear_pending (EV_A_ (W)w); 4223 clear_pending (EV_A_ (W)w);
2532 if (expect_false (!ev_is_active (w))) 4224 if (expect_false (!ev_is_active (w)))
2533 return; 4225 return;
2534 4226
… …
2536 4228
2537 wlist_del (&signals [w->signum - 1].head, (WL)w); 4229 wlist_del (&signals [w->signum - 1].head, (WL)w);
2538 ev_stop (EV_A_ (W)w); 4230 ev_stop (EV_A_ (W)w);
2539 4231
2540 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
2541 signal (w->signum, SIG_DFL); 4251 signal (w->signum, SIG_DFL);
4252 }
2542 4253
2543 EV_FREQUENT_CHECK; 4254 EV_FREQUENT_CHECK;
2544} 4255}
2545 4256
4257#endif
4258
4259#if EV_CHILD_ENABLE
4260
2546void 4261void
2547ev_child_start (EV_P_ ev_child *w) 4262ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
2548{ 4263{
2549#if EV_MULTIPLICITY 4264#if EV_MULTIPLICITY
2550 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));
2551#endif 4266#endif
2552 if (expect_false (ev_is_active (w))) 4267 if (expect_false (ev_is_active (w)))
2553 return; 4268 return;
2554 4269
2555 EV_FREQUENT_CHECK; 4270 EV_FREQUENT_CHECK;
2556 4271
2557 ev_start (EV_A_ (W)w, 1); 4272 ev_start (EV_A_ (W)w, 1);
2558 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4273 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2559 4274
2560 EV_FREQUENT_CHECK; 4275 EV_FREQUENT_CHECK;
2561} 4276}
2562 4277
2563void 4278void
2564ev_child_stop (EV_P_ ev_child *w) 4279ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
2565{ 4280{
2566 clear_pending (EV_A_ (W)w); 4281 clear_pending (EV_A_ (W)w);
2567 if (expect_false (!ev_is_active (w))) 4282 if (expect_false (!ev_is_active (w)))
2568 return; 4283 return;
2569 4284
2570 EV_FREQUENT_CHECK; 4285 EV_FREQUENT_CHECK;
2571 4286
2572 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4287 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2573 ev_stop (EV_A_ (W)w); 4288 ev_stop (EV_A_ (W)w);
2574 4289
2575 EV_FREQUENT_CHECK; 4290 EV_FREQUENT_CHECK;
2576} 4291}
4292
4293#endif
2577 4294
2578#if EV_STAT_ENABLE 4295#if EV_STAT_ENABLE
2579 4296
2580# ifdef _WIN32 4297# ifdef _WIN32
2581# undef lstat 4298# undef lstat
… …
2584 4301
2585#define DEF_STAT_INTERVAL 5.0074891 4302#define DEF_STAT_INTERVAL 5.0074891
2586#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4303#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2587#define MIN_STAT_INTERVAL 0.1074891 4304#define MIN_STAT_INTERVAL 0.1074891
2588 4305
2589static 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);
2590 4307
2591#if EV_USE_INOTIFY 4308#if EV_USE_INOTIFY
2592# define EV_INOTIFY_BUFSIZE 8192
2593 4309
2594static 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
2595infy_add (EV_P_ ev_stat *w) 4315infy_add (EV_P_ ev_stat *w)
2596{ 4316{
2597 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);
2598 4321
2599 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 */
2600 { 4348 }
4349 else
4350 {
4351 /* can't use inotify, continue to stat */
2601 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4352 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2602 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2603 4353
2604 /* monitor some parent directory for speedup hints */ 4354 /* if path is not there, monitor some parent directory for speedup hints */
2605 /* 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, */
2606 /* but an efficiency issue only */ 4356 /* but an efficiency issue only */
2607 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 4357 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2608 { 4358 {
2609 char path [4096]; 4359 char path [4096];
… …
2619 if (!pend || pend == path) 4369 if (!pend || pend == path)
2620 break; 4370 break;
2621 4371
2622 *pend = 0; 4372 *pend = 0;
2623 w->wd = inotify_add_watch (fs_fd, path, mask); 4373 w->wd = inotify_add_watch (fs_fd, path, mask);
2624 } 4374 }
2625 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 4375 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2626 } 4376 }
2627 } 4377 }
2628 4378
2629 if (w->wd >= 0) 4379 if (w->wd >= 0)
2630 {
2631 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);
2632 4381
2633 /* now local changes will be tracked by inotify, but remote changes won't */ 4382 /* now re-arm timer, if required */
2634 /* unless the filesystem it known to be local, we therefore still poll */ 4383 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2635 /* also do poll on <2.6.25, but with normal frequency */
2636 struct statfs sfs;
2637
2638 if (fs_2625 && !statfs (w->path, &sfs))
2639 if (sfs.f_type == 0x1373 /* devfs */
2640 || sfs.f_type == 0xEF53 /* ext2/3 */
2641 || sfs.f_type == 0x3153464a /* jfs */
2642 || sfs.f_type == 0x52654973 /* reiser3 */
2643 || sfs.f_type == 0x01021994 /* tempfs */
2644 || sfs.f_type == 0x58465342 /* xfs */)
2645 return;
2646
2647 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2648 ev_timer_again (EV_A_ &w->timer); 4384 ev_timer_again (EV_A_ &w->timer);
2649 } 4385 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2650} 4386}
2651 4387
2652static void noinline 4388noinline
4389static void
2653infy_del (EV_P_ ev_stat *w) 4390infy_del (EV_P_ ev_stat *w)
2654{ 4391{
2655 int slot; 4392 int slot;
2656 int wd = w->wd; 4393 int wd = w->wd;
2657 4394
2658 if (wd < 0) 4395 if (wd < 0)
2659 return; 4396 return;
2660 4397
2661 w->wd = -2; 4398 w->wd = -2;
2662 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 4399 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2663 wlist_del (&fs_hash [slot].head, (WL)w); 4400 wlist_del (&fs_hash [slot].head, (WL)w);
2664 4401
2665 /* remove this watcher, if others are watching it, they will rearm */ 4402 /* remove this watcher, if others are watching it, they will rearm */
2666 inotify_rm_watch (fs_fd, wd); 4403 inotify_rm_watch (fs_fd, wd);
2667} 4404}
2668 4405
2669static void noinline 4406noinline
4407static void
2670infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4408infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2671{ 4409{
2672 if (slot < 0) 4410 if (slot < 0)
2673 /* overflow, need to check for all hash slots */ 4411 /* overflow, need to check for all hash slots */
2674 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4412 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2675 infy_wd (EV_A_ slot, wd, ev); 4413 infy_wd (EV_A_ slot, wd, ev);
2676 else 4414 else
2677 { 4415 {
2678 WL w_; 4416 WL w_;
2679 4417
2680 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 4418 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2681 { 4419 {
2682 ev_stat *w = (ev_stat *)w_; 4420 ev_stat *w = (ev_stat *)w_;
2683 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 */
2684 4422
2685 if (w->wd == wd || wd == -1) 4423 if (w->wd == wd || wd == -1)
2686 { 4424 {
2687 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 4425 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2688 { 4426 {
2689 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);
2690 w->wd = -1; 4428 w->wd = -1;
2691 infy_add (EV_A_ w); /* re-add, no matter what */ 4429 infy_add (EV_A_ w); /* re-add, no matter what */
2692 } 4430 }
2693 4431
2694 stat_timer_cb (EV_A_ &w->timer, 0); 4432 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2699 4437
2700static void 4438static void
2701infy_cb (EV_P_ ev_io *w, int revents) 4439infy_cb (EV_P_ ev_io *w, int revents)
2702{ 4440{
2703 char buf [EV_INOTIFY_BUFSIZE]; 4441 char buf [EV_INOTIFY_BUFSIZE];
2704 struct inotify_event *ev = (struct inotify_event *)buf;
2705 int ofs; 4442 int ofs;
2706 int len = read (fs_fd, buf, sizeof (buf)); 4443 int len = read (fs_fd, buf, sizeof (buf));
2707 4444
2708 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);
2709 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 }
2710} 4451}
2711 4452
2712inline_size void 4453inline_size ecb_cold
4454void
2713check_2625 (EV_P) 4455ev_check_2625 (EV_P)
2714{ 4456{
2715 /* kernels < 2.6.25 are borked 4457 /* kernels < 2.6.25 are borked
2716 * 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
2717 */ 4459 */
2718 struct utsname buf; 4460 if (ev_linux_version () < 0x020619)
2719 int major, minor, micro;
2720
2721 if (uname (&buf))
2722 return; 4461 return;
2723 4462
2724 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2725 return;
2726
2727 if (major < 2
2728 || (major == 2 && minor < 6)
2729 || (major == 2 && minor == 6 && micro < 25))
2730 return;
2731
2732 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 ();
2733} 4475}
2734 4476
2735inline_size void 4477inline_size void
2736infy_init (EV_P) 4478infy_init (EV_P)
2737{ 4479{
2738 if (fs_fd != -2) 4480 if (fs_fd != -2)
2739 return; 4481 return;
2740 4482
2741 fs_fd = -1; 4483 fs_fd = -1;
2742 4484
2743 check_2625 (EV_A); 4485 ev_check_2625 (EV_A);
2744 4486
2745 fs_fd = inotify_init (); 4487 fs_fd = infy_newfd ();
2746 4488
2747 if (fs_fd >= 0) 4489 if (fs_fd >= 0)
2748 { 4490 {
4491 fd_intern (fs_fd);
2749 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 4492 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2750 ev_set_priority (&fs_w, EV_MAXPRI); 4493 ev_set_priority (&fs_w, EV_MAXPRI);
2751 ev_io_start (EV_A_ &fs_w); 4494 ev_io_start (EV_A_ &fs_w);
4495 ev_unref (EV_A);
2752 } 4496 }
2753} 4497}
2754 4498
2755inline_size void 4499inline_size void
2756infy_fork (EV_P) 4500infy_fork (EV_P)
… …
2758 int slot; 4502 int slot;
2759 4503
2760 if (fs_fd < 0) 4504 if (fs_fd < 0)
2761 return; 4505 return;
2762 4506
4507 ev_ref (EV_A);
4508 ev_io_stop (EV_A_ &fs_w);
2763 close (fs_fd); 4509 close (fs_fd);
2764 fs_fd = inotify_init (); 4510 fs_fd = infy_newfd ();
2765 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
2766 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4520 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2767 { 4521 {
2768 WL w_ = fs_hash [slot].head; 4522 WL w_ = fs_hash [slot].head;
2769 fs_hash [slot].head = 0; 4523 fs_hash [slot].head = 0;
2770 4524
2771 while (w_) 4525 while (w_)
… …
2776 w->wd = -1; 4530 w->wd = -1;
2777 4531
2778 if (fs_fd >= 0) 4532 if (fs_fd >= 0)
2779 infy_add (EV_A_ w); /* re-add, no matter what */ 4533 infy_add (EV_A_ w); /* re-add, no matter what */
2780 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);
2781 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 }
2782 } 4541 }
2783 } 4542 }
2784} 4543}
2785 4544
2786#endif 4545#endif
… …
2790#else 4549#else
2791# define EV_LSTAT(p,b) lstat (p, b) 4550# define EV_LSTAT(p,b) lstat (p, b)
2792#endif 4551#endif
2793 4552
2794void 4553void
2795ev_stat_stat (EV_P_ ev_stat *w) 4554ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
2796{ 4555{
2797 if (lstat (w->path, &w->attr) < 0) 4556 if (lstat (w->path, &w->attr) < 0)
2798 w->attr.st_nlink = 0; 4557 w->attr.st_nlink = 0;
2799 else if (!w->attr.st_nlink) 4558 else if (!w->attr.st_nlink)
2800 w->attr.st_nlink = 1; 4559 w->attr.st_nlink = 1;
2801} 4560}
2802 4561
2803static void noinline 4562noinline
4563static void
2804stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4564stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2805{ 4565{
2806 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4566 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2807 4567
2808 /* we copy this here each the time so that */ 4568 ev_statdata prev = w->attr;
2809 /* prev has the old value when the callback gets invoked */
2810 w->prev = w->attr;
2811 ev_stat_stat (EV_A_ w); 4569 ev_stat_stat (EV_A_ w);
2812 4570
2813 /* 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 */
2814 if ( 4572 if (
2815 w->prev.st_dev != w->attr.st_dev 4573 prev.st_dev != w->attr.st_dev
2816 || w->prev.st_ino != w->attr.st_ino 4574 || prev.st_ino != w->attr.st_ino
2817 || w->prev.st_mode != w->attr.st_mode 4575 || prev.st_mode != w->attr.st_mode
2818 || w->prev.st_nlink != w->attr.st_nlink 4576 || prev.st_nlink != w->attr.st_nlink
2819 || w->prev.st_uid != w->attr.st_uid 4577 || prev.st_uid != w->attr.st_uid
2820 || w->prev.st_gid != w->attr.st_gid 4578 || prev.st_gid != w->attr.st_gid
2821 || w->prev.st_rdev != w->attr.st_rdev 4579 || prev.st_rdev != w->attr.st_rdev
2822 || w->prev.st_size != w->attr.st_size 4580 || prev.st_size != w->attr.st_size
2823 || w->prev.st_atime != w->attr.st_atime 4581 || prev.st_atime != w->attr.st_atime
2824 || w->prev.st_mtime != w->attr.st_mtime 4582 || prev.st_mtime != w->attr.st_mtime
2825 || w->prev.st_ctime != w->attr.st_ctime 4583 || prev.st_ctime != w->attr.st_ctime
2826 ) { 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
2827 #if EV_USE_INOTIFY 4590 #if EV_USE_INOTIFY
2828 if (fs_fd >= 0) 4591 if (fs_fd >= 0)
2829 { 4592 {
2830 infy_del (EV_A_ w); 4593 infy_del (EV_A_ w);
2831 infy_add (EV_A_ w); 4594 infy_add (EV_A_ w);
… …
2836 ev_feed_event (EV_A_ w, EV_STAT); 4599 ev_feed_event (EV_A_ w, EV_STAT);
2837 } 4600 }
2838} 4601}
2839 4602
2840void 4603void
2841ev_stat_start (EV_P_ ev_stat *w) 4604ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
2842{ 4605{
2843 if (expect_false (ev_is_active (w))) 4606 if (expect_false (ev_is_active (w)))
2844 return; 4607 return;
2845 4608
2846 ev_stat_stat (EV_A_ w); 4609 ev_stat_stat (EV_A_ w);
… …
2856 4619
2857 if (fs_fd >= 0) 4620 if (fs_fd >= 0)
2858 infy_add (EV_A_ w); 4621 infy_add (EV_A_ w);
2859 else 4622 else
2860#endif 4623#endif
4624 {
2861 ev_timer_again (EV_A_ &w->timer); 4625 ev_timer_again (EV_A_ &w->timer);
4626 ev_unref (EV_A);
4627 }
2862 4628
2863 ev_start (EV_A_ (W)w, 1); 4629 ev_start (EV_A_ (W)w, 1);
2864 4630
2865 EV_FREQUENT_CHECK; 4631 EV_FREQUENT_CHECK;
2866} 4632}
2867 4633
2868void 4634void
2869ev_stat_stop (EV_P_ ev_stat *w) 4635ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
2870{ 4636{
2871 clear_pending (EV_A_ (W)w); 4637 clear_pending (EV_A_ (W)w);
2872 if (expect_false (!ev_is_active (w))) 4638 if (expect_false (!ev_is_active (w)))
2873 return; 4639 return;
2874 4640
2875 EV_FREQUENT_CHECK; 4641 EV_FREQUENT_CHECK;
2876 4642
2877#if EV_USE_INOTIFY 4643#if EV_USE_INOTIFY
2878 infy_del (EV_A_ w); 4644 infy_del (EV_A_ w);
2879#endif 4645#endif
4646
4647 if (ev_is_active (&w->timer))
4648 {
4649 ev_ref (EV_A);
2880 ev_timer_stop (EV_A_ &w->timer); 4650 ev_timer_stop (EV_A_ &w->timer);
4651 }
2881 4652
2882 ev_stop (EV_A_ (W)w); 4653 ev_stop (EV_A_ (W)w);
2883 4654
2884 EV_FREQUENT_CHECK; 4655 EV_FREQUENT_CHECK;
2885} 4656}
2886#endif 4657#endif
2887 4658
2888#if EV_IDLE_ENABLE 4659#if EV_IDLE_ENABLE
2889void 4660void
2890ev_idle_start (EV_P_ ev_idle *w) 4661ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
2891{ 4662{
2892 if (expect_false (ev_is_active (w))) 4663 if (expect_false (ev_is_active (w)))
2893 return; 4664 return;
2894 4665
2895 pri_adjust (EV_A_ (W)w); 4666 pri_adjust (EV_A_ (W)w);
… …
2900 int active = ++idlecnt [ABSPRI (w)]; 4671 int active = ++idlecnt [ABSPRI (w)];
2901 4672
2902 ++idleall; 4673 ++idleall;
2903 ev_start (EV_A_ (W)w, active); 4674 ev_start (EV_A_ (W)w, active);
2904 4675
2905 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);
2906 idles [ABSPRI (w)][active - 1] = w; 4677 idles [ABSPRI (w)][active - 1] = w;
2907 } 4678 }
2908 4679
2909 EV_FREQUENT_CHECK; 4680 EV_FREQUENT_CHECK;
2910} 4681}
2911 4682
2912void 4683void
2913ev_idle_stop (EV_P_ ev_idle *w) 4684ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
2914{ 4685{
2915 clear_pending (EV_A_ (W)w); 4686 clear_pending (EV_A_ (W)w);
2916 if (expect_false (!ev_is_active (w))) 4687 if (expect_false (!ev_is_active (w)))
2917 return; 4688 return;
2918 4689
… …
2930 4701
2931 EV_FREQUENT_CHECK; 4702 EV_FREQUENT_CHECK;
2932} 4703}
2933#endif 4704#endif
2934 4705
4706#if EV_PREPARE_ENABLE
2935void 4707void
2936ev_prepare_start (EV_P_ ev_prepare *w) 4708ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
2937{ 4709{
2938 if (expect_false (ev_is_active (w))) 4710 if (expect_false (ev_is_active (w)))
2939 return; 4711 return;
2940 4712
2941 EV_FREQUENT_CHECK; 4713 EV_FREQUENT_CHECK;
2942 4714
2943 ev_start (EV_A_ (W)w, ++preparecnt); 4715 ev_start (EV_A_ (W)w, ++preparecnt);
2944 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4716 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
2945 prepares [preparecnt - 1] = w; 4717 prepares [preparecnt - 1] = w;
2946 4718
2947 EV_FREQUENT_CHECK; 4719 EV_FREQUENT_CHECK;
2948} 4720}
2949 4721
2950void 4722void
2951ev_prepare_stop (EV_P_ ev_prepare *w) 4723ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
2952{ 4724{
2953 clear_pending (EV_A_ (W)w); 4725 clear_pending (EV_A_ (W)w);
2954 if (expect_false (!ev_is_active (w))) 4726 if (expect_false (!ev_is_active (w)))
2955 return; 4727 return;
2956 4728
… …
2965 4737
2966 ev_stop (EV_A_ (W)w); 4738 ev_stop (EV_A_ (W)w);
2967 4739
2968 EV_FREQUENT_CHECK; 4740 EV_FREQUENT_CHECK;
2969} 4741}
4742#endif
2970 4743
4744#if EV_CHECK_ENABLE
2971void 4745void
2972ev_check_start (EV_P_ ev_check *w) 4746ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
2973{ 4747{
2974 if (expect_false (ev_is_active (w))) 4748 if (expect_false (ev_is_active (w)))
2975 return; 4749 return;
2976 4750
2977 EV_FREQUENT_CHECK; 4751 EV_FREQUENT_CHECK;
2978 4752
2979 ev_start (EV_A_ (W)w, ++checkcnt); 4753 ev_start (EV_A_ (W)w, ++checkcnt);
2980 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 4754 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
2981 checks [checkcnt - 1] = w; 4755 checks [checkcnt - 1] = w;
2982 4756
2983 EV_FREQUENT_CHECK; 4757 EV_FREQUENT_CHECK;
2984} 4758}
2985 4759
2986void 4760void
2987ev_check_stop (EV_P_ ev_check *w) 4761ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
2988{ 4762{
2989 clear_pending (EV_A_ (W)w); 4763 clear_pending (EV_A_ (W)w);
2990 if (expect_false (!ev_is_active (w))) 4764 if (expect_false (!ev_is_active (w)))
2991 return; 4765 return;
2992 4766
… …
3001 4775
3002 ev_stop (EV_A_ (W)w); 4776 ev_stop (EV_A_ (W)w);
3003 4777
3004 EV_FREQUENT_CHECK; 4778 EV_FREQUENT_CHECK;
3005} 4779}
4780#endif
3006 4781
3007#if EV_EMBED_ENABLE 4782#if EV_EMBED_ENABLE
3008void noinline 4783noinline
4784void
3009ev_embed_sweep (EV_P_ ev_embed *w) 4785ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
3010{ 4786{
3011 ev_loop (w->other, EVLOOP_NONBLOCK); 4787 ev_run (w->other, EVRUN_NOWAIT);
3012} 4788}
3013 4789
3014static void 4790static void
3015embed_io_cb (EV_P_ ev_io *io, int revents) 4791embed_io_cb (EV_P_ ev_io *io, int revents)
3016{ 4792{
3017 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4793 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3018 4794
3019 if (ev_cb (w)) 4795 if (ev_cb (w))
3020 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4796 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3021 else 4797 else
3022 ev_loop (w->other, EVLOOP_NONBLOCK); 4798 ev_run (w->other, EVRUN_NOWAIT);
3023} 4799}
3024 4800
3025static void 4801static void
3026embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4802embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3027{ 4803{
3028 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 4804 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
3029 4805
3030 { 4806 {
3031 struct ev_loop *loop = w->other; 4807 EV_P = w->other;
3032 4808
3033 while (fdchangecnt) 4809 while (fdchangecnt)
3034 { 4810 {
3035 fd_reify (EV_A); 4811 fd_reify (EV_A);
3036 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4812 ev_run (EV_A_ EVRUN_NOWAIT);
3037 } 4813 }
3038 } 4814 }
3039} 4815}
3040 4816
3041static void 4817static void
… …
3044 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));
3045 4821
3046 ev_embed_stop (EV_A_ w); 4822 ev_embed_stop (EV_A_ w);
3047 4823
3048 { 4824 {
3049 struct ev_loop *loop = w->other; 4825 EV_P = w->other;
3050 4826
3051 ev_loop_fork (EV_A); 4827 ev_loop_fork (EV_A);
3052 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4828 ev_run (EV_A_ EVRUN_NOWAIT);
3053 } 4829 }
3054 4830
3055 ev_embed_start (EV_A_ w); 4831 ev_embed_start (EV_A_ w);
3056} 4832}
3057 4833
… …
3062 ev_idle_stop (EV_A_ idle); 4838 ev_idle_stop (EV_A_ idle);
3063} 4839}
3064#endif 4840#endif
3065 4841
3066void 4842void
3067ev_embed_start (EV_P_ ev_embed *w) 4843ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
3068{ 4844{
3069 if (expect_false (ev_is_active (w))) 4845 if (expect_false (ev_is_active (w)))
3070 return; 4846 return;
3071 4847
3072 { 4848 {
3073 struct ev_loop *loop = w->other; 4849 EV_P = w->other;
3074 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 ()));
3075 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);
3076 } 4852 }
3077 4853
3078 EV_FREQUENT_CHECK; 4854 EV_FREQUENT_CHECK;
… …
3093 4869
3094 EV_FREQUENT_CHECK; 4870 EV_FREQUENT_CHECK;
3095} 4871}
3096 4872
3097void 4873void
3098ev_embed_stop (EV_P_ ev_embed *w) 4874ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
3099{ 4875{
3100 clear_pending (EV_A_ (W)w); 4876 clear_pending (EV_A_ (W)w);
3101 if (expect_false (!ev_is_active (w))) 4877 if (expect_false (!ev_is_active (w)))
3102 return; 4878 return;
3103 4879
… …
3105 4881
3106 ev_io_stop (EV_A_ &w->io); 4882 ev_io_stop (EV_A_ &w->io);
3107 ev_prepare_stop (EV_A_ &w->prepare); 4883 ev_prepare_stop (EV_A_ &w->prepare);
3108 ev_fork_stop (EV_A_ &w->fork); 4884 ev_fork_stop (EV_A_ &w->fork);
3109 4885
4886 ev_stop (EV_A_ (W)w);
4887
3110 EV_FREQUENT_CHECK; 4888 EV_FREQUENT_CHECK;
3111} 4889}
3112#endif 4890#endif
3113 4891
3114#if EV_FORK_ENABLE 4892#if EV_FORK_ENABLE
3115void 4893void
3116ev_fork_start (EV_P_ ev_fork *w) 4894ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
3117{ 4895{
3118 if (expect_false (ev_is_active (w))) 4896 if (expect_false (ev_is_active (w)))
3119 return; 4897 return;
3120 4898
3121 EV_FREQUENT_CHECK; 4899 EV_FREQUENT_CHECK;
3122 4900
3123 ev_start (EV_A_ (W)w, ++forkcnt); 4901 ev_start (EV_A_ (W)w, ++forkcnt);
3124 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 4902 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
3125 forks [forkcnt - 1] = w; 4903 forks [forkcnt - 1] = w;
3126 4904
3127 EV_FREQUENT_CHECK; 4905 EV_FREQUENT_CHECK;
3128} 4906}
3129 4907
3130void 4908void
3131ev_fork_stop (EV_P_ ev_fork *w) 4909ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
3132{ 4910{
3133 clear_pending (EV_A_ (W)w); 4911 clear_pending (EV_A_ (W)w);
3134 if (expect_false (!ev_is_active (w))) 4912 if (expect_false (!ev_is_active (w)))
3135 return; 4913 return;
3136 4914
… …
3147 4925
3148 EV_FREQUENT_CHECK; 4926 EV_FREQUENT_CHECK;
3149} 4927}
3150#endif 4928#endif
3151 4929
3152#if EV_ASYNC_ENABLE 4930#if EV_CLEANUP_ENABLE
3153void 4931void
3154ev_async_start (EV_P_ ev_async *w) 4932ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
3155{ 4933{
3156 if (expect_false (ev_is_active (w))) 4934 if (expect_false (ev_is_active (w)))
3157 return; 4935 return;
3158 4936
3159 evpipe_init (EV_A);
3160
3161 EV_FREQUENT_CHECK; 4937 EV_FREQUENT_CHECK;
3162 4938
3163 ev_start (EV_A_ (W)w, ++asynccnt); 4939 ev_start (EV_A_ (W)w, ++cleanupcnt);
3164 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 4940 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
3165 asyncs [asynccnt - 1] = w; 4941 cleanups [cleanupcnt - 1] = w;
3166 4942
4943 /* cleanup watchers should never keep a refcount on the loop */
4944 ev_unref (EV_A);
3167 EV_FREQUENT_CHECK; 4945 EV_FREQUENT_CHECK;
3168} 4946}
3169 4947
3170void 4948void
3171ev_async_stop (EV_P_ ev_async *w) 4949ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
3172{ 4950{
3173 clear_pending (EV_A_ (W)w); 4951 clear_pending (EV_A_ (W)w);
3174 if (expect_false (!ev_is_active (w))) 4952 if (expect_false (!ev_is_active (w)))
3175 return; 4953 return;
3176 4954
3177 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;
3178 4999
3179 { 5000 {
3180 int active = ev_active (w); 5001 int active = ev_active (w);
3181 5002
3182 asyncs [active - 1] = asyncs [--asynccnt]; 5003 asyncs [active - 1] = asyncs [--asynccnt];
… …
3187 5008
3188 EV_FREQUENT_CHECK; 5009 EV_FREQUENT_CHECK;
3189} 5010}
3190 5011
3191void 5012void
3192ev_async_send (EV_P_ ev_async *w) 5013ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
3193{ 5014{
3194 w->sent = 1; 5015 w->sent = 1;
3195 evpipe_write (EV_A_ &gotasync); 5016 evpipe_write (EV_A_ &async_pending);
3196} 5017}
3197#endif 5018#endif
3198 5019
3199/*****************************************************************************/ 5020/*****************************************************************************/
3200 5021
… …
3234 5055
3235 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));
3236} 5057}
3237 5058
3238void 5059void
3239ev_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
3240{ 5061{
3241 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));
3242
3243 if (expect_false (!once))
3244 {
3245 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
3246 return;
3247 }
3248 5063
3249 once->cb = cb; 5064 once->cb = cb;
3250 once->arg = arg; 5065 once->arg = arg;
3251 5066
3252 ev_init (&once->io, once_cb_io); 5067 ev_init (&once->io, once_cb_io);
… …
3265} 5080}
3266 5081
3267/*****************************************************************************/ 5082/*****************************************************************************/
3268 5083
3269#if EV_WALK_ENABLE 5084#if EV_WALK_ENABLE
5085ecb_cold
3270void 5086void
3271ev_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
3272{ 5088{
3273 int i, j; 5089 int i, j;
3274 ev_watcher_list *wl, *wn; 5090 ev_watcher_list *wl, *wn;
3275 5091
3276 if (types & (EV_IO | EV_EMBED)) 5092 if (types & (EV_IO | EV_EMBED))
… …
3319 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 5135 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3320#endif 5136#endif
3321 5137
3322#if EV_IDLE_ENABLE 5138#if EV_IDLE_ENABLE
3323 if (types & EV_IDLE) 5139 if (types & EV_IDLE)
3324 for (j = NUMPRI; i--; ) 5140 for (j = NUMPRI; j--; )
3325 for (i = idlecnt [j]; i--; ) 5141 for (i = idlecnt [j]; i--; )
3326 cb (EV_A_ EV_IDLE, idles [j][i]); 5142 cb (EV_A_ EV_IDLE, idles [j][i]);
3327#endif 5143#endif
3328 5144
3329#if EV_FORK_ENABLE 5145#if EV_FORK_ENABLE
… …
3337 if (types & EV_ASYNC) 5153 if (types & EV_ASYNC)
3338 for (i = asynccnt; i--; ) 5154 for (i = asynccnt; i--; )
3339 cb (EV_A_ EV_ASYNC, asyncs [i]); 5155 cb (EV_A_ EV_ASYNC, asyncs [i]);
3340#endif 5156#endif
3341 5157
5158#if EV_PREPARE_ENABLE
3342 if (types & EV_PREPARE) 5159 if (types & EV_PREPARE)
3343 for (i = preparecnt; i--; ) 5160 for (i = preparecnt; i--; )
3344#if EV_EMBED_ENABLE 5161# if EV_EMBED_ENABLE
3345 if (ev_cb (prepares [i]) != embed_prepare_cb) 5162 if (ev_cb (prepares [i]) != embed_prepare_cb)
3346#endif 5163# endif
3347 cb (EV_A_ EV_PREPARE, prepares [i]); 5164 cb (EV_A_ EV_PREPARE, prepares [i]);
5165#endif
3348 5166
5167#if EV_CHECK_ENABLE
3349 if (types & EV_CHECK) 5168 if (types & EV_CHECK)
3350 for (i = checkcnt; i--; ) 5169 for (i = checkcnt; i--; )
3351 cb (EV_A_ EV_CHECK, checks [i]); 5170 cb (EV_A_ EV_CHECK, checks [i]);
5171#endif
3352 5172
5173#if EV_SIGNAL_ENABLE
3353 if (types & EV_SIGNAL) 5174 if (types & EV_SIGNAL)
3354 for (i = 0; i < signalmax; ++i) 5175 for (i = 0; i < EV_NSIG - 1; ++i)
3355 for (wl = signals [i].head; wl; ) 5176 for (wl = signals [i].head; wl; )
3356 { 5177 {
3357 wn = wl->next; 5178 wn = wl->next;
3358 cb (EV_A_ EV_SIGNAL, wl); 5179 cb (EV_A_ EV_SIGNAL, wl);
3359 wl = wn; 5180 wl = wn;
3360 } 5181 }
5182#endif
3361 5183
5184#if EV_CHILD_ENABLE
3362 if (types & EV_CHILD) 5185 if (types & EV_CHILD)
3363 for (i = EV_PID_HASHSIZE; i--; ) 5186 for (i = (EV_PID_HASHSIZE); i--; )
3364 for (wl = childs [i]; wl; ) 5187 for (wl = childs [i]; wl; )
3365 { 5188 {
3366 wn = wl->next; 5189 wn = wl->next;
3367 cb (EV_A_ EV_CHILD, wl); 5190 cb (EV_A_ EV_CHILD, wl);
3368 wl = wn; 5191 wl = wn;
3369 } 5192 }
5193#endif
3370/* EV_STAT 0x00001000 /* stat data changed */ 5194/* EV_STAT 0x00001000 /* stat data changed */
3371/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 5195/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3372} 5196}
3373#endif 5197#endif
3374 5198
3375#if EV_MULTIPLICITY 5199#if EV_MULTIPLICITY
3376 #include "ev_wrap.h" 5200 #include "ev_wrap.h"
3377#endif 5201#endif
3378 5202
3379#ifdef __cplusplus
3380}
3381#endif
3382

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