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Comparing libev/ev.c (file contents):
Revision 1.295 by root, Wed Jul 8 04:29:31 2009 UTC vs.
Revision 1.500 by root, Mon Jul 1 20:47:37 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__
574 typedef signed long long int64_t;
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
589#else
590 #include <inttypes.h>
591 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
592 #define ECB_PTRSIZE 8
593 #else
594 #define ECB_PTRSIZE 4
595 #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
607 #endif
608#endif
609
610/* many compilers define _GNUC_ to some versions but then only implement
611 * what their idiot authors think are the "more important" extensions,
612 * causing enormous grief in return for some better fake benchmark numbers.
613 * or so.
614 * we try to detect these and simply assume they are not gcc - if they have
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
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)
376# define expect(expr,value) __builtin_expect ((expr),(value)) 872 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
377# define noinline __attribute__ ((noinline))
378#else 873#else
379# define expect(expr,value) (expr) 874 #define ecb_expect(expr,value) (expr)
380# define noinline
381# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
382# define inline
383# endif 875#endif
384#endif
385 876
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. */
386#define expect_false(expr) expect ((expr) != 0, 0) 941#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
387#define expect_true(expr) expect ((expr) != 0, 1) 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_NO_THREADS 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
388#define inline_size static inline 1555#define inline_size ecb_inline
389 1556
390#if EV_MINIMAL 1557#if EV_FEATURE_CODE
391# define inline_speed static noinline
392#else
393# define inline_speed static inline 1558# define inline_speed ecb_inline
1559#else
1560# define inline_speed ecb_noinline static
394#endif 1561#endif
395 1562
396#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1563#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
397 1564
398#if EV_MINPRI == EV_MAXPRI 1565#if EV_MINPRI == EV_MAXPRI
399# define ABSPRI(w) (((W)w), 0) 1566# define ABSPRI(w) (((W)w), 0)
400#else 1567#else
401# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1568# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
402#endif 1569#endif
403 1570
404#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1571#define EMPTY /* required for microsofts broken pseudo-c compiler */
405#define EMPTY2(a,b) /* used to suppress some warnings */
406 1572
407typedef ev_watcher *W; 1573typedef ev_watcher *W;
408typedef ev_watcher_list *WL; 1574typedef ev_watcher_list *WL;
409typedef ev_watcher_time *WT; 1575typedef ev_watcher_time *WT;
410 1576
411#define ev_active(w) ((W)(w))->active 1577#define ev_active(w) ((W)(w))->active
412#define ev_at(w) ((WT)(w))->at 1578#define ev_at(w) ((WT)(w))->at
413 1579
414#if EV_USE_REALTIME 1580#if EV_USE_REALTIME
415/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 1581/* sig_atomic_t is used to avoid per-thread variables or locking but still */
416/* giving it a reasonably high chance of working on typical architetcures */ 1582/* giving it a reasonably high chance of working on typical architectures */
417static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 1583static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
418#endif 1584#endif
419 1585
420#if EV_USE_MONOTONIC 1586#if EV_USE_MONOTONIC
421static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 1587static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
422#endif 1588#endif
423 1589
1590#ifndef EV_FD_TO_WIN32_HANDLE
1591# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
1592#endif
1593#ifndef EV_WIN32_HANDLE_TO_FD
1594# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
1595#endif
1596#ifndef EV_WIN32_CLOSE_FD
1597# define EV_WIN32_CLOSE_FD(fd) close (fd)
1598#endif
1599
424#ifdef _WIN32 1600#ifdef _WIN32
425# include "ev_win32.c" 1601# include "ev_win32.c"
426#endif 1602#endif
427 1603
428/*****************************************************************************/ 1604/*****************************************************************************/
429 1605
1606#if EV_USE_LINUXAIO
1607# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
1608#endif
1609
1610/* define a suitable floor function (only used by periodics atm) */
1611
1612#if EV_USE_FLOOR
1613# include <math.h>
1614# define ev_floor(v) floor (v)
1615#else
1616
1617#include <float.h>
1618
1619/* a floor() replacement function, should be independent of ev_tstamp type */
1620ecb_noinline
1621static ev_tstamp
1622ev_floor (ev_tstamp v)
1623{
1624 /* the choice of shift factor is not terribly important */
1625#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1626 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1627#else
1628 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1629#endif
1630
1631 /* argument too large for an unsigned long? */
1632 if (ecb_expect_false (v >= shift))
1633 {
1634 ev_tstamp f;
1635
1636 if (v == v - 1.)
1637 return v; /* very large number */
1638
1639 f = shift * ev_floor (v * (1. / shift));
1640 return f + ev_floor (v - f);
1641 }
1642
1643 /* special treatment for negative args? */
1644 if (ecb_expect_false (v < 0.))
1645 {
1646 ev_tstamp f = -ev_floor (-v);
1647
1648 return f - (f == v ? 0 : 1);
1649 }
1650
1651 /* fits into an unsigned long */
1652 return (unsigned long)v;
1653}
1654
1655#endif
1656
1657/*****************************************************************************/
1658
1659#ifdef __linux
1660# include <sys/utsname.h>
1661#endif
1662
1663ecb_noinline ecb_cold
1664static unsigned int
1665ev_linux_version (void)
1666{
1667#ifdef __linux
1668 unsigned int v = 0;
1669 struct utsname buf;
1670 int i;
1671 char *p = buf.release;
1672
1673 if (uname (&buf))
1674 return 0;
1675
1676 for (i = 3+1; --i; )
1677 {
1678 unsigned int c = 0;
1679
1680 for (;;)
1681 {
1682 if (*p >= '0' && *p <= '9')
1683 c = c * 10 + *p++ - '0';
1684 else
1685 {
1686 p += *p == '.';
1687 break;
1688 }
1689 }
1690
1691 v = (v << 8) | c;
1692 }
1693
1694 return v;
1695#else
1696 return 0;
1697#endif
1698}
1699
1700/*****************************************************************************/
1701
1702#if EV_AVOID_STDIO
1703ecb_noinline ecb_cold
1704static void
1705ev_printerr (const char *msg)
1706{
1707 write (STDERR_FILENO, msg, strlen (msg));
1708}
1709#endif
1710
430static void (*syserr_cb)(const char *msg); 1711static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
431 1712
1713ecb_cold
432void 1714void
433ev_set_syserr_cb (void (*cb)(const char *msg)) 1715ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
434{ 1716{
435 syserr_cb = cb; 1717 syserr_cb = cb;
436} 1718}
437 1719
438static void noinline 1720ecb_noinline ecb_cold
1721static void
439ev_syserr (const char *msg) 1722ev_syserr (const char *msg)
440{ 1723{
441 if (!msg) 1724 if (!msg)
442 msg = "(libev) system error"; 1725 msg = "(libev) system error";
443 1726
444 if (syserr_cb) 1727 if (syserr_cb)
445 syserr_cb (msg); 1728 syserr_cb (msg);
446 else 1729 else
447 { 1730 {
1731#if EV_AVOID_STDIO
1732 ev_printerr (msg);
1733 ev_printerr (": ");
1734 ev_printerr (strerror (errno));
1735 ev_printerr ("\n");
1736#else
448 perror (msg); 1737 perror (msg);
1738#endif
449 abort (); 1739 abort ();
450 } 1740 }
451} 1741}
452 1742
453static void * 1743static void *
454ev_realloc_emul (void *ptr, long size) 1744ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
455{ 1745{
456 /* some systems, notably openbsd and darwin, fail to properly 1746 /* some systems, notably openbsd and darwin, fail to properly
457 * implement realloc (x, 0) (as required by both ansi c-98 and 1747 * implement realloc (x, 0) (as required by both ansi c-89 and
458 * the single unix specification, so work around them here. 1748 * the single unix specification, so work around them here.
1749 * recently, also (at least) fedora and debian started breaking it,
1750 * despite documenting it otherwise.
459 */ 1751 */
460 1752
461 if (size) 1753 if (size)
462 return realloc (ptr, size); 1754 return realloc (ptr, size);
463 1755
464 free (ptr); 1756 free (ptr);
465 return 0; 1757 return 0;
466} 1758}
467 1759
468static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1760static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
469 1761
1762ecb_cold
470void 1763void
471ev_set_allocator (void *(*cb)(void *ptr, long size)) 1764ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
472{ 1765{
473 alloc = cb; 1766 alloc = cb;
474} 1767}
475 1768
476inline_speed void * 1769inline_speed void *
… …
478{ 1771{
479 ptr = alloc (ptr, size); 1772 ptr = alloc (ptr, size);
480 1773
481 if (!ptr && size) 1774 if (!ptr && size)
482 { 1775 {
1776#if EV_AVOID_STDIO
1777 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1778#else
483 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1779 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1780#endif
484 abort (); 1781 abort ();
485 } 1782 }
486 1783
487 return ptr; 1784 return ptr;
488} 1785}
… …
490#define ev_malloc(size) ev_realloc (0, (size)) 1787#define ev_malloc(size) ev_realloc (0, (size))
491#define ev_free(ptr) ev_realloc ((ptr), 0) 1788#define ev_free(ptr) ev_realloc ((ptr), 0)
492 1789
493/*****************************************************************************/ 1790/*****************************************************************************/
494 1791
1792/* set in reify when reification needed */
1793#define EV_ANFD_REIFY 1
1794
495/* file descriptor info structure */ 1795/* file descriptor info structure */
496typedef struct 1796typedef struct
497{ 1797{
498 WL head; 1798 WL head;
499 unsigned char events; /* the events watched for */ 1799 unsigned char events; /* the events watched for */
500 unsigned char reify; /* flag set when this ANFD needs reification */ 1800 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
501 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1801 unsigned char emask; /* some backends store the actual kernel mask in here */
502 unsigned char unused; 1802 unsigned char unused;
503#if EV_USE_EPOLL 1803#if EV_USE_EPOLL
504 unsigned int egen; /* generation counter to counter epoll bugs */ 1804 unsigned int egen; /* generation counter to counter epoll bugs */
505#endif 1805#endif
506#if EV_SELECT_IS_WINSOCKET 1806#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
507 SOCKET handle; 1807 SOCKET handle;
1808#endif
1809#if EV_USE_IOCP
1810 OVERLAPPED or, ow;
508#endif 1811#endif
509} ANFD; 1812} ANFD;
510 1813
511/* stores the pending event set for a given watcher */ 1814/* stores the pending event set for a given watcher */
512typedef struct 1815typedef struct
… …
554 #undef VAR 1857 #undef VAR
555 }; 1858 };
556 #include "ev_wrap.h" 1859 #include "ev_wrap.h"
557 1860
558 static struct ev_loop default_loop_struct; 1861 static struct ev_loop default_loop_struct;
559 struct ev_loop *ev_default_loop_ptr; 1862 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
560 1863
561#else 1864#else
562 1865
563 ev_tstamp ev_rt_now; 1866 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
564 #define VAR(name,decl) static decl; 1867 #define VAR(name,decl) static decl;
565 #include "ev_vars.h" 1868 #include "ev_vars.h"
566 #undef VAR 1869 #undef VAR
567 1870
568 static int ev_default_loop_ptr; 1871 static int ev_default_loop_ptr;
569 1872
570#endif 1873#endif
571 1874
1875#if EV_FEATURE_API
1876# define EV_RELEASE_CB if (ecb_expect_false (release_cb)) release_cb (EV_A)
1877# define EV_ACQUIRE_CB if (ecb_expect_false (acquire_cb)) acquire_cb (EV_A)
1878# define EV_INVOKE_PENDING invoke_cb (EV_A)
1879#else
1880# define EV_RELEASE_CB (void)0
1881# define EV_ACQUIRE_CB (void)0
1882# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
1883#endif
1884
1885#define EVBREAK_RECURSE 0x80
1886
572/*****************************************************************************/ 1887/*****************************************************************************/
573 1888
574#ifndef EV_HAVE_EV_TIME 1889#ifndef EV_HAVE_EV_TIME
575ev_tstamp 1890ev_tstamp
576ev_time (void) 1891ev_time (void) EV_NOEXCEPT
577{ 1892{
578#if EV_USE_REALTIME 1893#if EV_USE_REALTIME
579 if (expect_true (have_realtime)) 1894 if (ecb_expect_true (have_realtime))
580 { 1895 {
581 struct timespec ts; 1896 struct timespec ts;
582 clock_gettime (CLOCK_REALTIME, &ts); 1897 clock_gettime (CLOCK_REALTIME, &ts);
583 return ts.tv_sec + ts.tv_nsec * 1e-9; 1898 return ts.tv_sec + ts.tv_nsec * 1e-9;
584 } 1899 }
… …
592 1907
593inline_size ev_tstamp 1908inline_size ev_tstamp
594get_clock (void) 1909get_clock (void)
595{ 1910{
596#if EV_USE_MONOTONIC 1911#if EV_USE_MONOTONIC
597 if (expect_true (have_monotonic)) 1912 if (ecb_expect_true (have_monotonic))
598 { 1913 {
599 struct timespec ts; 1914 struct timespec ts;
600 clock_gettime (CLOCK_MONOTONIC, &ts); 1915 clock_gettime (CLOCK_MONOTONIC, &ts);
601 return ts.tv_sec + ts.tv_nsec * 1e-9; 1916 return ts.tv_sec + ts.tv_nsec * 1e-9;
602 } 1917 }
… …
605 return ev_time (); 1920 return ev_time ();
606} 1921}
607 1922
608#if EV_MULTIPLICITY 1923#if EV_MULTIPLICITY
609ev_tstamp 1924ev_tstamp
610ev_now (EV_P) 1925ev_now (EV_P) EV_NOEXCEPT
611{ 1926{
612 return ev_rt_now; 1927 return ev_rt_now;
613} 1928}
614#endif 1929#endif
615 1930
616void 1931void
617ev_sleep (ev_tstamp delay) 1932ev_sleep (ev_tstamp delay) EV_NOEXCEPT
618{ 1933{
619 if (delay > 0.) 1934 if (delay > 0.)
620 { 1935 {
621#if EV_USE_NANOSLEEP 1936#if EV_USE_NANOSLEEP
622 struct timespec ts; 1937 struct timespec ts;
623 1938
624 ts.tv_sec = (time_t)delay; 1939 EV_TS_SET (ts, delay);
625 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
626
627 nanosleep (&ts, 0); 1940 nanosleep (&ts, 0);
628#elif defined(_WIN32) 1941#elif defined _WIN32
1942 /* maybe this should round up, as ms is very low resolution */
1943 /* compared to select (µs) or nanosleep (ns) */
629 Sleep ((unsigned long)(delay * 1e3)); 1944 Sleep ((unsigned long)(delay * 1e3));
630#else 1945#else
631 struct timeval tv; 1946 struct timeval tv;
632 1947
633 tv.tv_sec = (time_t)delay;
634 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
635
636 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1948 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
637 /* somehting not guaranteed by newer posix versions, but guaranteed */ 1949 /* something not guaranteed by newer posix versions, but guaranteed */
638 /* by older ones */ 1950 /* by older ones */
1951 EV_TV_SET (tv, delay);
639 select (0, 0, 0, 0, &tv); 1952 select (0, 0, 0, 0, &tv);
640#endif 1953#endif
641 } 1954 }
642} 1955}
643 1956
644/*****************************************************************************/ 1957/*****************************************************************************/
645 1958
646#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1959#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
647 1960
648/* find a suitable new size for the given array, */ 1961/* find a suitable new size for the given array, */
649/* hopefully by rounding to a ncie-to-malloc size */ 1962/* hopefully by rounding to a nice-to-malloc size */
650inline_size int 1963inline_size int
651array_nextsize (int elem, int cur, int cnt) 1964array_nextsize (int elem, int cur, int cnt)
652{ 1965{
653 int ncur = cur + 1; 1966 int ncur = cur + 1;
654 1967
655 do 1968 do
656 ncur <<= 1; 1969 ncur <<= 1;
657 while (cnt > ncur); 1970 while (cnt > ncur);
658 1971
659 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1972 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
660 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1973 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
661 { 1974 {
662 ncur *= elem; 1975 ncur *= elem;
663 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1976 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
664 ncur = ncur - sizeof (void *) * 4; 1977 ncur = ncur - sizeof (void *) * 4;
… …
666 } 1979 }
667 1980
668 return ncur; 1981 return ncur;
669} 1982}
670 1983
671static noinline void * 1984ecb_noinline ecb_cold
1985static void *
672array_realloc (int elem, void *base, int *cur, int cnt) 1986array_realloc (int elem, void *base, int *cur, int cnt)
673{ 1987{
674 *cur = array_nextsize (elem, *cur, cnt); 1988 *cur = array_nextsize (elem, *cur, cnt);
675 return ev_realloc (base, elem * *cur); 1989 return ev_realloc (base, elem * *cur);
676} 1990}
677 1991
1992#define array_needsize_noinit(base,offset,count)
1993
678#define array_init_zero(base,count) \ 1994#define array_needsize_zerofill(base,offset,count) \
679 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1995 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
680 1996
681#define array_needsize(type,base,cur,cnt,init) \ 1997#define array_needsize(type,base,cur,cnt,init) \
682 if (expect_false ((cnt) > (cur))) \ 1998 if (ecb_expect_false ((cnt) > (cur))) \
683 { \ 1999 { \
684 int ocur_ = (cur); \ 2000 ecb_unused int ocur_ = (cur); \
685 (base) = (type *)array_realloc \ 2001 (base) = (type *)array_realloc \
686 (sizeof (type), (base), &(cur), (cnt)); \ 2002 (sizeof (type), (base), &(cur), (cnt)); \
687 init ((base) + (ocur_), (cur) - ocur_); \ 2003 init ((base), ocur_, ((cur) - ocur_)); \
688 } 2004 }
689 2005
690#if 0 2006#if 0
691#define array_slim(type,stem) \ 2007#define array_slim(type,stem) \
692 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2008 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
… …
701 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 2017 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
702 2018
703/*****************************************************************************/ 2019/*****************************************************************************/
704 2020
705/* dummy callback for pending events */ 2021/* dummy callback for pending events */
706static void noinline 2022ecb_noinline
2023static void
707pendingcb (EV_P_ ev_prepare *w, int revents) 2024pendingcb (EV_P_ ev_prepare *w, int revents)
708{ 2025{
709} 2026}
710 2027
711void noinline 2028ecb_noinline
2029void
712ev_feed_event (EV_P_ void *w, int revents) 2030ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
713{ 2031{
714 W w_ = (W)w; 2032 W w_ = (W)w;
715 int pri = ABSPRI (w_); 2033 int pri = ABSPRI (w_);
716 2034
717 if (expect_false (w_->pending)) 2035 if (ecb_expect_false (w_->pending))
718 pendings [pri][w_->pending - 1].events |= revents; 2036 pendings [pri][w_->pending - 1].events |= revents;
719 else 2037 else
720 { 2038 {
721 w_->pending = ++pendingcnt [pri]; 2039 w_->pending = ++pendingcnt [pri];
722 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2040 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
723 pendings [pri][w_->pending - 1].w = w_; 2041 pendings [pri][w_->pending - 1].w = w_;
724 pendings [pri][w_->pending - 1].events = revents; 2042 pendings [pri][w_->pending - 1].events = revents;
725 } 2043 }
2044
2045 pendingpri = NUMPRI - 1;
726} 2046}
727 2047
728inline_speed void 2048inline_speed void
729feed_reverse (EV_P_ W w) 2049feed_reverse (EV_P_ W w)
730{ 2050{
731 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2051 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
732 rfeeds [rfeedcnt++] = w; 2052 rfeeds [rfeedcnt++] = w;
733} 2053}
734 2054
735inline_size void 2055inline_size void
736feed_reverse_done (EV_P_ int revents) 2056feed_reverse_done (EV_P_ int revents)
… …
750} 2070}
751 2071
752/*****************************************************************************/ 2072/*****************************************************************************/
753 2073
754inline_speed void 2074inline_speed void
755fd_event (EV_P_ int fd, int revents) 2075fd_event_nocheck (EV_P_ int fd, int revents)
756{ 2076{
757 ANFD *anfd = anfds + fd; 2077 ANFD *anfd = anfds + fd;
758 ev_io *w; 2078 ev_io *w;
759 2079
760 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2080 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
764 if (ev) 2084 if (ev)
765 ev_feed_event (EV_A_ (W)w, ev); 2085 ev_feed_event (EV_A_ (W)w, ev);
766 } 2086 }
767} 2087}
768 2088
769void 2089/* do not submit kernel events for fds that have reify set */
2090/* because that means they changed while we were polling for new events */
2091inline_speed void
770ev_feed_fd_event (EV_P_ int fd, int revents) 2092fd_event (EV_P_ int fd, int revents)
2093{
2094 ANFD *anfd = anfds + fd;
2095
2096 if (ecb_expect_true (!anfd->reify))
2097 fd_event_nocheck (EV_A_ fd, revents);
2098}
2099
2100void
2101ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
771{ 2102{
772 if (fd >= 0 && fd < anfdmax) 2103 if (fd >= 0 && fd < anfdmax)
773 fd_event (EV_A_ fd, revents); 2104 fd_event_nocheck (EV_A_ fd, revents);
774} 2105}
775 2106
776/* make sure the external fd watch events are in-sync */ 2107/* make sure the external fd watch events are in-sync */
777/* with the kernel/libev internal state */ 2108/* with the kernel/libev internal state */
778inline_size void 2109inline_size void
779fd_reify (EV_P) 2110fd_reify (EV_P)
780{ 2111{
781 int i; 2112 int i;
782 2113
2114#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
2115 for (i = 0; i < fdchangecnt; ++i)
2116 {
2117 int fd = fdchanges [i];
2118 ANFD *anfd = anfds + fd;
2119
2120 if (anfd->reify & EV__IOFDSET && anfd->head)
2121 {
2122 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
2123
2124 if (handle != anfd->handle)
2125 {
2126 unsigned long arg;
2127
2128 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
2129
2130 /* handle changed, but fd didn't - we need to do it in two steps */
2131 backend_modify (EV_A_ fd, anfd->events, 0);
2132 anfd->events = 0;
2133 anfd->handle = handle;
2134 }
2135 }
2136 }
2137#endif
2138
783 for (i = 0; i < fdchangecnt; ++i) 2139 for (i = 0; i < fdchangecnt; ++i)
784 { 2140 {
785 int fd = fdchanges [i]; 2141 int fd = fdchanges [i];
786 ANFD *anfd = anfds + fd; 2142 ANFD *anfd = anfds + fd;
787 ev_io *w; 2143 ev_io *w;
788 2144
789 unsigned char events = 0; 2145 unsigned char o_events = anfd->events;
2146 unsigned char o_reify = anfd->reify;
790 2147
791 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2148 anfd->reify = 0;
792 events |= (unsigned char)w->events;
793 2149
794#if EV_SELECT_IS_WINSOCKET 2150 /*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
795 if (events)
796 { 2151 {
797 unsigned long arg; 2152 anfd->events = 0;
798 #ifdef EV_FD_TO_WIN32_HANDLE 2153
799 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 2154 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
800 #else 2155 anfd->events |= (unsigned char)w->events;
801 anfd->handle = _get_osfhandle (fd); 2156
802 #endif 2157 if (o_events != anfd->events)
803 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 2158 o_reify = EV__IOFDSET; /* actually |= */
804 } 2159 }
805#endif
806 2160
807 { 2161 if (o_reify & EV__IOFDSET)
808 unsigned char o_events = anfd->events;
809 unsigned char o_reify = anfd->reify;
810
811 anfd->reify = 0;
812 anfd->events = events;
813
814 if (o_events != events || o_reify & EV__IOFDSET)
815 backend_modify (EV_A_ fd, o_events, events); 2162 backend_modify (EV_A_ fd, o_events, anfd->events);
816 }
817 } 2163 }
818 2164
819 fdchangecnt = 0; 2165 fdchangecnt = 0;
820} 2166}
821 2167
822/* something about the given fd changed */ 2168/* something about the given fd changed */
823inline_size void 2169inline_size
2170void
824fd_change (EV_P_ int fd, int flags) 2171fd_change (EV_P_ int fd, int flags)
825{ 2172{
826 unsigned char reify = anfds [fd].reify; 2173 unsigned char reify = anfds [fd].reify;
827 anfds [fd].reify |= flags; 2174 anfds [fd].reify |= flags;
828 2175
829 if (expect_true (!reify)) 2176 if (ecb_expect_true (!reify))
830 { 2177 {
831 ++fdchangecnt; 2178 ++fdchangecnt;
832 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2179 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
833 fdchanges [fdchangecnt - 1] = fd; 2180 fdchanges [fdchangecnt - 1] = fd;
834 } 2181 }
835} 2182}
836 2183
837/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2184/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
838inline_speed void 2185inline_speed ecb_cold void
839fd_kill (EV_P_ int fd) 2186fd_kill (EV_P_ int fd)
840{ 2187{
841 ev_io *w; 2188 ev_io *w;
842 2189
843 while ((w = (ev_io *)anfds [fd].head)) 2190 while ((w = (ev_io *)anfds [fd].head))
… …
845 ev_io_stop (EV_A_ w); 2192 ev_io_stop (EV_A_ w);
846 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2193 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
847 } 2194 }
848} 2195}
849 2196
850/* check whether the given fd is atcually valid, for error recovery */ 2197/* check whether the given fd is actually valid, for error recovery */
851inline_size int 2198inline_size ecb_cold int
852fd_valid (int fd) 2199fd_valid (int fd)
853{ 2200{
854#ifdef _WIN32 2201#ifdef _WIN32
855 return _get_osfhandle (fd) != -1; 2202 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
856#else 2203#else
857 return fcntl (fd, F_GETFD) != -1; 2204 return fcntl (fd, F_GETFD) != -1;
858#endif 2205#endif
859} 2206}
860 2207
861/* called on EBADF to verify fds */ 2208/* called on EBADF to verify fds */
862static void noinline 2209ecb_noinline ecb_cold
2210static void
863fd_ebadf (EV_P) 2211fd_ebadf (EV_P)
864{ 2212{
865 int fd; 2213 int fd;
866 2214
867 for (fd = 0; fd < anfdmax; ++fd) 2215 for (fd = 0; fd < anfdmax; ++fd)
… …
869 if (!fd_valid (fd) && errno == EBADF) 2217 if (!fd_valid (fd) && errno == EBADF)
870 fd_kill (EV_A_ fd); 2218 fd_kill (EV_A_ fd);
871} 2219}
872 2220
873/* called on ENOMEM in select/poll to kill some fds and retry */ 2221/* called on ENOMEM in select/poll to kill some fds and retry */
874static void noinline 2222ecb_noinline ecb_cold
2223static void
875fd_enomem (EV_P) 2224fd_enomem (EV_P)
876{ 2225{
877 int fd; 2226 int fd;
878 2227
879 for (fd = anfdmax; fd--; ) 2228 for (fd = anfdmax; fd--; )
880 if (anfds [fd].events) 2229 if (anfds [fd].events)
881 { 2230 {
882 fd_kill (EV_A_ fd); 2231 fd_kill (EV_A_ fd);
883 return; 2232 break;
884 } 2233 }
885} 2234}
886 2235
887/* usually called after fork if backend needs to re-arm all fds from scratch */ 2236/* usually called after fork if backend needs to re-arm all fds from scratch */
888static void noinline 2237ecb_noinline
2238static void
889fd_rearm_all (EV_P) 2239fd_rearm_all (EV_P)
890{ 2240{
891 int fd; 2241 int fd;
892 2242
893 for (fd = 0; fd < anfdmax; ++fd) 2243 for (fd = 0; fd < anfdmax; ++fd)
894 if (anfds [fd].events) 2244 if (anfds [fd].events)
895 { 2245 {
896 anfds [fd].events = 0; 2246 anfds [fd].events = 0;
897 anfds [fd].emask = 0; 2247 anfds [fd].emask = 0;
898 fd_change (EV_A_ fd, EV__IOFDSET | 1); 2248 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
899 } 2249 }
900} 2250}
901 2251
2252/* used to prepare libev internal fd's */
2253/* this is not fork-safe */
2254inline_speed void
2255fd_intern (int fd)
2256{
2257#ifdef _WIN32
2258 unsigned long arg = 1;
2259 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
2260#else
2261 fcntl (fd, F_SETFD, FD_CLOEXEC);
2262 fcntl (fd, F_SETFL, O_NONBLOCK);
2263#endif
2264}
2265
902/*****************************************************************************/ 2266/*****************************************************************************/
903 2267
904/* 2268/*
905 * the heap functions want a real array index. array index 0 uis guaranteed to not 2269 * the heap functions want a real array index. array index 0 is guaranteed to not
906 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 2270 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
907 * the branching factor of the d-tree. 2271 * the branching factor of the d-tree.
908 */ 2272 */
909 2273
910/* 2274/*
… …
932 ev_tstamp minat; 2296 ev_tstamp minat;
933 ANHE *minpos; 2297 ANHE *minpos;
934 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; 2298 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
935 2299
936 /* find minimum child */ 2300 /* find minimum child */
937 if (expect_true (pos + DHEAP - 1 < E)) 2301 if (ecb_expect_true (pos + DHEAP - 1 < E))
938 { 2302 {
939 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2303 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
940 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2304 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
941 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2305 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
942 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2306 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
… …
978 2342
979 for (;;) 2343 for (;;)
980 { 2344 {
981 int c = k << 1; 2345 int c = k << 1;
982 2346
983 if (c > N + HEAP0 - 1) 2347 if (c >= N + HEAP0)
984 break; 2348 break;
985 2349
986 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 2350 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
987 ? 1 : 0; 2351 ? 1 : 0;
988 2352
… …
1024 2388
1025/* move an element suitably so it is in a correct place */ 2389/* move an element suitably so it is in a correct place */
1026inline_size void 2390inline_size void
1027adjustheap (ANHE *heap, int N, int k) 2391adjustheap (ANHE *heap, int N, int k)
1028{ 2392{
1029 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 2393 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1030 upheap (heap, k); 2394 upheap (heap, k);
1031 else 2395 else
1032 downheap (heap, N, k); 2396 downheap (heap, N, k);
1033} 2397}
1034 2398
… …
1047/*****************************************************************************/ 2411/*****************************************************************************/
1048 2412
1049/* associate signal watchers to a signal signal */ 2413/* associate signal watchers to a signal signal */
1050typedef struct 2414typedef struct
1051{ 2415{
2416 EV_ATOMIC_T pending;
2417#if EV_MULTIPLICITY
2418 EV_P;
2419#endif
1052 WL head; 2420 WL head;
1053 EV_ATOMIC_T gotsig;
1054} ANSIG; 2421} ANSIG;
1055 2422
1056static ANSIG *signals; 2423static ANSIG signals [EV_NSIG - 1];
1057static int signalmax;
1058
1059static EV_ATOMIC_T gotsig;
1060 2424
1061/*****************************************************************************/ 2425/*****************************************************************************/
1062 2426
1063/* used to prepare libev internal fd's */ 2427#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1064/* this is not fork-safe */ 2428
2429ecb_noinline ecb_cold
2430static void
2431evpipe_init (EV_P)
2432{
2433 if (!ev_is_active (&pipe_w))
2434 {
2435 int fds [2];
2436
2437# if EV_USE_EVENTFD
2438 fds [0] = -1;
2439 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
2440 if (fds [1] < 0 && errno == EINVAL)
2441 fds [1] = eventfd (0, 0);
2442
2443 if (fds [1] < 0)
2444# endif
2445 {
2446 while (pipe (fds))
2447 ev_syserr ("(libev) error creating signal/async pipe");
2448
2449 fd_intern (fds [0]);
2450 }
2451
2452 evpipe [0] = fds [0];
2453
2454 if (evpipe [1] < 0)
2455 evpipe [1] = fds [1]; /* first call, set write fd */
2456 else
2457 {
2458 /* on subsequent calls, do not change evpipe [1] */
2459 /* so that evpipe_write can always rely on its value. */
2460 /* this branch does not do anything sensible on windows, */
2461 /* so must not be executed on windows */
2462
2463 dup2 (fds [1], evpipe [1]);
2464 close (fds [1]);
2465 }
2466
2467 fd_intern (evpipe [1]);
2468
2469 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2470 ev_io_start (EV_A_ &pipe_w);
2471 ev_unref (EV_A); /* watcher should not keep loop alive */
2472 }
2473}
2474
1065inline_speed void 2475inline_speed void
1066fd_intern (int fd) 2476evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1067{ 2477{
1068#ifdef _WIN32 2478 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1069 unsigned long arg = 1;
1070 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1071#else
1072 fcntl (fd, F_SETFD, FD_CLOEXEC);
1073 fcntl (fd, F_SETFL, O_NONBLOCK);
1074#endif
1075}
1076 2479
1077static void noinline 2480 if (ecb_expect_true (*flag))
1078evpipe_init (EV_P) 2481 return;
1079{ 2482
1080 if (!ev_is_active (&pipe_w)) 2483 *flag = 1;
2484 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2485
2486 pipe_write_skipped = 1;
2487
2488 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2489
2490 if (pipe_write_wanted)
1081 { 2491 {
2492 int old_errno;
2493
2494 pipe_write_skipped = 0;
2495 ECB_MEMORY_FENCE_RELEASE;
2496
2497 old_errno = errno; /* save errno because write will clobber it */
2498
1082#if EV_USE_EVENTFD 2499#if EV_USE_EVENTFD
1083 if ((evfd = eventfd (0, 0)) >= 0) 2500 if (evpipe [0] < 0)
1084 { 2501 {
1085 evpipe [0] = -1; 2502 uint64_t counter = 1;
1086 fd_intern (evfd); 2503 write (evpipe [1], &counter, sizeof (uint64_t));
1087 ev_io_set (&pipe_w, evfd, EV_READ);
1088 } 2504 }
1089 else 2505 else
1090#endif 2506#endif
1091 { 2507 {
1092 while (pipe (evpipe)) 2508#ifdef _WIN32
1093 ev_syserr ("(libev) error creating signal/async pipe"); 2509 WSABUF buf;
1094 2510 DWORD sent;
1095 fd_intern (evpipe [0]); 2511 buf.buf = (char *)&buf;
1096 fd_intern (evpipe [1]); 2512 buf.len = 1;
1097 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2513 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2514#else
2515 write (evpipe [1], &(evpipe [1]), 1);
2516#endif
1098 } 2517 }
1099
1100 ev_io_start (EV_A_ &pipe_w);
1101 ev_unref (EV_A); /* watcher should not keep loop alive */
1102 }
1103}
1104
1105inline_size void
1106evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1107{
1108 if (!*flag)
1109 {
1110 int old_errno = errno; /* save errno because write might clobber it */
1111
1112 *flag = 1;
1113
1114#if EV_USE_EVENTFD
1115 if (evfd >= 0)
1116 {
1117 uint64_t counter = 1;
1118 write (evfd, &counter, sizeof (uint64_t));
1119 }
1120 else
1121#endif
1122 write (evpipe [1], &old_errno, 1);
1123 2518
1124 errno = old_errno; 2519 errno = old_errno;
1125 } 2520 }
1126} 2521}
1127 2522
1128/* called whenever the libev signal pipe */ 2523/* called whenever the libev signal pipe */
1129/* got some events (signal, async) */ 2524/* got some events (signal, async) */
1130static void 2525static void
1131pipecb (EV_P_ ev_io *iow, int revents) 2526pipecb (EV_P_ ev_io *iow, int revents)
1132{ 2527{
2528 int i;
2529
2530 if (revents & EV_READ)
2531 {
1133#if EV_USE_EVENTFD 2532#if EV_USE_EVENTFD
1134 if (evfd >= 0) 2533 if (evpipe [0] < 0)
1135 { 2534 {
1136 uint64_t counter; 2535 uint64_t counter;
1137 read (evfd, &counter, sizeof (uint64_t)); 2536 read (evpipe [1], &counter, sizeof (uint64_t));
1138 } 2537 }
1139 else 2538 else
1140#endif 2539#endif
1141 { 2540 {
1142 char dummy; 2541 char dummy[4];
2542#ifdef _WIN32
2543 WSABUF buf;
2544 DWORD recvd;
2545 DWORD flags = 0;
2546 buf.buf = dummy;
2547 buf.len = sizeof (dummy);
2548 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2549#else
1143 read (evpipe [0], &dummy, 1); 2550 read (evpipe [0], &dummy, sizeof (dummy));
2551#endif
2552 }
2553 }
2554
2555 pipe_write_skipped = 0;
2556
2557 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2558
2559#if EV_SIGNAL_ENABLE
2560 if (sig_pending)
1144 } 2561 {
2562 sig_pending = 0;
1145 2563
1146 if (gotsig && ev_is_default_loop (EV_A)) 2564 ECB_MEMORY_FENCE;
1147 {
1148 int signum;
1149 gotsig = 0;
1150 2565
1151 for (signum = signalmax; signum--; ) 2566 for (i = EV_NSIG - 1; i--; )
1152 if (signals [signum].gotsig) 2567 if (ecb_expect_false (signals [i].pending))
1153 ev_feed_signal_event (EV_A_ signum + 1); 2568 ev_feed_signal_event (EV_A_ i + 1);
1154 } 2569 }
2570#endif
1155 2571
1156#if EV_ASYNC_ENABLE 2572#if EV_ASYNC_ENABLE
1157 if (gotasync) 2573 if (async_pending)
1158 { 2574 {
1159 int i; 2575 async_pending = 0;
1160 gotasync = 0; 2576
2577 ECB_MEMORY_FENCE;
1161 2578
1162 for (i = asynccnt; i--; ) 2579 for (i = asynccnt; i--; )
1163 if (asyncs [i]->sent) 2580 if (asyncs [i]->sent)
1164 { 2581 {
1165 asyncs [i]->sent = 0; 2582 asyncs [i]->sent = 0;
2583 ECB_MEMORY_FENCE_RELEASE;
1166 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2584 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1167 } 2585 }
1168 } 2586 }
1169#endif 2587#endif
1170} 2588}
1171 2589
1172/*****************************************************************************/ 2590/*****************************************************************************/
1173 2591
2592void
2593ev_feed_signal (int signum) EV_NOEXCEPT
2594{
2595#if EV_MULTIPLICITY
2596 EV_P;
2597 ECB_MEMORY_FENCE_ACQUIRE;
2598 EV_A = signals [signum - 1].loop;
2599
2600 if (!EV_A)
2601 return;
2602#endif
2603
2604 signals [signum - 1].pending = 1;
2605 evpipe_write (EV_A_ &sig_pending);
2606}
2607
1174static void 2608static void
1175ev_sighandler (int signum) 2609ev_sighandler (int signum)
1176{ 2610{
2611#ifdef _WIN32
2612 signal (signum, ev_sighandler);
2613#endif
2614
2615 ev_feed_signal (signum);
2616}
2617
2618ecb_noinline
2619void
2620ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
2621{
2622 WL w;
2623
2624 if (ecb_expect_false (signum <= 0 || signum >= EV_NSIG))
2625 return;
2626
2627 --signum;
2628
1177#if EV_MULTIPLICITY 2629#if EV_MULTIPLICITY
1178 struct ev_loop *loop = &default_loop_struct; 2630 /* it is permissible to try to feed a signal to the wrong loop */
1179#endif 2631 /* or, likely more useful, feeding a signal nobody is waiting for */
1180 2632
1181#if _WIN32 2633 if (ecb_expect_false (signals [signum].loop != EV_A))
1182 signal (signum, ev_sighandler);
1183#endif
1184
1185 signals [signum - 1].gotsig = 1;
1186 evpipe_write (EV_A_ &gotsig);
1187}
1188
1189void noinline
1190ev_feed_signal_event (EV_P_ int signum)
1191{
1192 WL w;
1193
1194#if EV_MULTIPLICITY
1195 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1196#endif
1197
1198 --signum;
1199
1200 if (signum < 0 || signum >= signalmax)
1201 return; 2634 return;
2635#endif
1202 2636
1203 signals [signum].gotsig = 0; 2637 signals [signum].pending = 0;
2638 ECB_MEMORY_FENCE_RELEASE;
1204 2639
1205 for (w = signals [signum].head; w; w = w->next) 2640 for (w = signals [signum].head; w; w = w->next)
1206 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2641 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1207} 2642}
1208 2643
2644#if EV_USE_SIGNALFD
2645static void
2646sigfdcb (EV_P_ ev_io *iow, int revents)
2647{
2648 struct signalfd_siginfo si[2], *sip; /* these structs are big */
2649
2650 for (;;)
2651 {
2652 ssize_t res = read (sigfd, si, sizeof (si));
2653
2654 /* not ISO-C, as res might be -1, but works with SuS */
2655 for (sip = si; (char *)sip < (char *)si + res; ++sip)
2656 ev_feed_signal_event (EV_A_ sip->ssi_signo);
2657
2658 if (res < (ssize_t)sizeof (si))
2659 break;
2660 }
2661}
2662#endif
2663
2664#endif
2665
1209/*****************************************************************************/ 2666/*****************************************************************************/
1210 2667
2668#if EV_CHILD_ENABLE
1211static WL childs [EV_PID_HASHSIZE]; 2669static WL childs [EV_PID_HASHSIZE];
1212
1213#ifndef _WIN32
1214 2670
1215static ev_signal childev; 2671static ev_signal childev;
1216 2672
1217#ifndef WIFCONTINUED 2673#ifndef WIFCONTINUED
1218# define WIFCONTINUED(status) 0 2674# define WIFCONTINUED(status) 0
… …
1223child_reap (EV_P_ int chain, int pid, int status) 2679child_reap (EV_P_ int chain, int pid, int status)
1224{ 2680{
1225 ev_child *w; 2681 ev_child *w;
1226 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2682 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1227 2683
1228 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2684 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1229 { 2685 {
1230 if ((w->pid == pid || !w->pid) 2686 if ((w->pid == pid || !w->pid)
1231 && (!traced || (w->flags & 1))) 2687 && (!traced || (w->flags & 1)))
1232 { 2688 {
1233 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2689 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1258 /* make sure we are called again until all children have been reaped */ 2714 /* make sure we are called again until all children have been reaped */
1259 /* we need to do it this way so that the callback gets called before we continue */ 2715 /* we need to do it this way so that the callback gets called before we continue */
1260 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2716 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1261 2717
1262 child_reap (EV_A_ pid, pid, status); 2718 child_reap (EV_A_ pid, pid, status);
1263 if (EV_PID_HASHSIZE > 1) 2719 if ((EV_PID_HASHSIZE) > 1)
1264 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2720 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1265} 2721}
1266 2722
1267#endif 2723#endif
1268 2724
1269/*****************************************************************************/ 2725/*****************************************************************************/
1270 2726
2727#if EV_USE_IOCP
2728# include "ev_iocp.c"
2729#endif
1271#if EV_USE_PORT 2730#if EV_USE_PORT
1272# include "ev_port.c" 2731# include "ev_port.c"
1273#endif 2732#endif
1274#if EV_USE_KQUEUE 2733#if EV_USE_KQUEUE
1275# include "ev_kqueue.c" 2734# include "ev_kqueue.c"
1276#endif 2735#endif
1277#if EV_USE_EPOLL 2736#if EV_USE_EPOLL
1278# include "ev_epoll.c" 2737# include "ev_epoll.c"
1279#endif 2738#endif
2739#if EV_USE_LINUXAIO
2740# include "ev_linuxaio.c"
2741#endif
1280#if EV_USE_POLL 2742#if EV_USE_POLL
1281# include "ev_poll.c" 2743# include "ev_poll.c"
1282#endif 2744#endif
1283#if EV_USE_SELECT 2745#if EV_USE_SELECT
1284# include "ev_select.c" 2746# include "ev_select.c"
1285#endif 2747#endif
1286 2748
1287int 2749ecb_cold int
1288ev_version_major (void) 2750ev_version_major (void) EV_NOEXCEPT
1289{ 2751{
1290 return EV_VERSION_MAJOR; 2752 return EV_VERSION_MAJOR;
1291} 2753}
1292 2754
1293int 2755ecb_cold int
1294ev_version_minor (void) 2756ev_version_minor (void) EV_NOEXCEPT
1295{ 2757{
1296 return EV_VERSION_MINOR; 2758 return EV_VERSION_MINOR;
1297} 2759}
1298 2760
1299/* return true if we are running with elevated privileges and should ignore env variables */ 2761/* return true if we are running with elevated privileges and should ignore env variables */
1300int inline_size 2762inline_size ecb_cold int
1301enable_secure (void) 2763enable_secure (void)
1302{ 2764{
1303#ifdef _WIN32 2765#ifdef _WIN32
1304 return 0; 2766 return 0;
1305#else 2767#else
1306 return getuid () != geteuid () 2768 return getuid () != geteuid ()
1307 || getgid () != getegid (); 2769 || getgid () != getegid ();
1308#endif 2770#endif
1309} 2771}
1310 2772
2773ecb_cold
1311unsigned int 2774unsigned int
1312ev_supported_backends (void) 2775ev_supported_backends (void) EV_NOEXCEPT
1313{ 2776{
1314 unsigned int flags = 0; 2777 unsigned int flags = 0;
1315 2778
1316 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2779 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1317 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2780 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
1318 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 2781 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2782 if (EV_USE_LINUXAIO) flags |= EVBACKEND_LINUXAIO;
1319 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 2783 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
1320 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2784 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
1321 2785
1322 return flags; 2786 return flags;
1323} 2787}
1324 2788
2789ecb_cold
1325unsigned int 2790unsigned int
1326ev_recommended_backends (void) 2791ev_recommended_backends (void) EV_NOEXCEPT
1327{ 2792{
1328 unsigned int flags = ev_supported_backends (); 2793 unsigned int flags = ev_supported_backends ();
1329 2794
1330#ifndef __NetBSD__ 2795#ifndef __NetBSD__
1331 /* kqueue is borked on everything but netbsd apparently */ 2796 /* kqueue is borked on everything but netbsd apparently */
… …
1335#ifdef __APPLE__ 2800#ifdef __APPLE__
1336 /* only select works correctly on that "unix-certified" platform */ 2801 /* only select works correctly on that "unix-certified" platform */
1337 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2802 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1338 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 2803 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1339#endif 2804#endif
2805#ifdef __FreeBSD__
2806 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2807#endif
2808
2809 /* TODO: linuxaio is very experimental */
2810#if !EV_RECOMMEND_LINUXAIO
2811 flags &= ~EVBACKEND_LINUXAIO;
2812#endif
1340 2813
1341 return flags; 2814 return flags;
1342} 2815}
1343 2816
2817ecb_cold
1344unsigned int 2818unsigned int
1345ev_embeddable_backends (void) 2819ev_embeddable_backends (void) EV_NOEXCEPT
1346{ 2820{
1347 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2821 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1348 2822
1349 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2823 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1350 /* please fix it and tell me how to detect the fix */ 2824 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1351 flags &= ~EVBACKEND_EPOLL; 2825 flags &= ~EVBACKEND_EPOLL;
1352 2826
1353 return flags; 2827 return flags;
1354} 2828}
1355 2829
1356unsigned int 2830unsigned int
1357ev_backend (EV_P) 2831ev_backend (EV_P) EV_NOEXCEPT
1358{ 2832{
1359 return backend; 2833 return backend;
1360} 2834}
1361 2835
2836#if EV_FEATURE_API
1362unsigned int 2837unsigned int
1363ev_loop_count (EV_P) 2838ev_iteration (EV_P) EV_NOEXCEPT
1364{ 2839{
1365 return loop_count; 2840 return loop_count;
1366} 2841}
1367 2842
1368unsigned int 2843unsigned int
1369ev_loop_depth (EV_P) 2844ev_depth (EV_P) EV_NOEXCEPT
1370{ 2845{
1371 return loop_depth; 2846 return loop_depth;
1372} 2847}
1373 2848
1374void 2849void
1375ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2850ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1376{ 2851{
1377 io_blocktime = interval; 2852 io_blocktime = interval;
1378} 2853}
1379 2854
1380void 2855void
1381ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2856ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1382{ 2857{
1383 timeout_blocktime = interval; 2858 timeout_blocktime = interval;
1384} 2859}
1385 2860
2861void
2862ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
2863{
2864 userdata = data;
2865}
2866
2867void *
2868ev_userdata (EV_P) EV_NOEXCEPT
2869{
2870 return userdata;
2871}
2872
2873void
2874ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
2875{
2876 invoke_cb = invoke_pending_cb;
2877}
2878
2879void
2880ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
2881{
2882 release_cb = release;
2883 acquire_cb = acquire;
2884}
2885#endif
2886
1386/* initialise a loop structure, must be zero-initialised */ 2887/* initialise a loop structure, must be zero-initialised */
1387static void noinline 2888ecb_noinline ecb_cold
2889static void
1388loop_init (EV_P_ unsigned int flags) 2890loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
1389{ 2891{
1390 if (!backend) 2892 if (!backend)
1391 { 2893 {
2894 origflags = flags;
2895
1392#if EV_USE_REALTIME 2896#if EV_USE_REALTIME
1393 if (!have_realtime) 2897 if (!have_realtime)
1394 { 2898 {
1395 struct timespec ts; 2899 struct timespec ts;
1396 2900
… …
1407 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 2911 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1408 have_monotonic = 1; 2912 have_monotonic = 1;
1409 } 2913 }
1410#endif 2914#endif
1411 2915
1412 ev_rt_now = ev_time ();
1413 mn_now = get_clock ();
1414 now_floor = mn_now;
1415 rtmn_diff = ev_rt_now - mn_now;
1416
1417 io_blocktime = 0.;
1418 timeout_blocktime = 0.;
1419 backend = 0;
1420 backend_fd = -1;
1421 gotasync = 0;
1422#if EV_USE_INOTIFY
1423 fs_fd = -2;
1424#endif
1425
1426 /* pid check not overridable via env */ 2916 /* pid check not overridable via env */
1427#ifndef _WIN32 2917#ifndef _WIN32
1428 if (flags & EVFLAG_FORKCHECK) 2918 if (flags & EVFLAG_FORKCHECK)
1429 curpid = getpid (); 2919 curpid = getpid ();
1430#endif 2920#endif
… …
1432 if (!(flags & EVFLAG_NOENV) 2922 if (!(flags & EVFLAG_NOENV)
1433 && !enable_secure () 2923 && !enable_secure ()
1434 && getenv ("LIBEV_FLAGS")) 2924 && getenv ("LIBEV_FLAGS"))
1435 flags = atoi (getenv ("LIBEV_FLAGS")); 2925 flags = atoi (getenv ("LIBEV_FLAGS"));
1436 2926
1437 if (!(flags & 0x0000ffffU)) 2927 ev_rt_now = ev_time ();
2928 mn_now = get_clock ();
2929 now_floor = mn_now;
2930 rtmn_diff = ev_rt_now - mn_now;
2931#if EV_FEATURE_API
2932 invoke_cb = ev_invoke_pending;
2933#endif
2934
2935 io_blocktime = 0.;
2936 timeout_blocktime = 0.;
2937 backend = 0;
2938 backend_fd = -1;
2939 sig_pending = 0;
2940#if EV_ASYNC_ENABLE
2941 async_pending = 0;
2942#endif
2943 pipe_write_skipped = 0;
2944 pipe_write_wanted = 0;
2945 evpipe [0] = -1;
2946 evpipe [1] = -1;
2947#if EV_USE_INOTIFY
2948 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2949#endif
2950#if EV_USE_SIGNALFD
2951 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
2952#endif
2953
2954 if (!(flags & EVBACKEND_MASK))
1438 flags |= ev_recommended_backends (); 2955 flags |= ev_recommended_backends ();
1439 2956
2957#if EV_USE_IOCP
2958 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2959#endif
1440#if EV_USE_PORT 2960#if EV_USE_PORT
1441 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2961 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1442#endif 2962#endif
1443#if EV_USE_KQUEUE 2963#if EV_USE_KQUEUE
1444 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2964 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
2965#endif
2966#if EV_USE_LINUXAIO
2967 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
1445#endif 2968#endif
1446#if EV_USE_EPOLL 2969#if EV_USE_EPOLL
1447 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 2970 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
1448#endif 2971#endif
1449#if EV_USE_POLL 2972#if EV_USE_POLL
1450 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 2973 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
1451#endif 2974#endif
1452#if EV_USE_SELECT 2975#if EV_USE_SELECT
1453 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2976 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
1454#endif 2977#endif
1455 2978
1456 ev_prepare_init (&pending_w, pendingcb); 2979 ev_prepare_init (&pending_w, pendingcb);
1457 2980
2981#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1458 ev_init (&pipe_w, pipecb); 2982 ev_init (&pipe_w, pipecb);
1459 ev_set_priority (&pipe_w, EV_MAXPRI); 2983 ev_set_priority (&pipe_w, EV_MAXPRI);
2984#endif
1460 } 2985 }
1461} 2986}
1462 2987
1463/* free up a loop structure */ 2988/* free up a loop structure */
1464static void noinline 2989ecb_cold
2990void
1465loop_destroy (EV_P) 2991ev_loop_destroy (EV_P)
1466{ 2992{
1467 int i; 2993 int i;
1468 2994
2995#if EV_MULTIPLICITY
2996 /* mimic free (0) */
2997 if (!EV_A)
2998 return;
2999#endif
3000
3001#if EV_CLEANUP_ENABLE
3002 /* queue cleanup watchers (and execute them) */
3003 if (ecb_expect_false (cleanupcnt))
3004 {
3005 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
3006 EV_INVOKE_PENDING;
3007 }
3008#endif
3009
3010#if EV_CHILD_ENABLE
3011 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
3012 {
3013 ev_ref (EV_A); /* child watcher */
3014 ev_signal_stop (EV_A_ &childev);
3015 }
3016#endif
3017
1469 if (ev_is_active (&pipe_w)) 3018 if (ev_is_active (&pipe_w))
1470 { 3019 {
1471 ev_ref (EV_A); /* signal watcher */ 3020 /*ev_ref (EV_A);*/
1472 ev_io_stop (EV_A_ &pipe_w); 3021 /*ev_io_stop (EV_A_ &pipe_w);*/
1473 3022
3023 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
3024 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
3025 }
3026
1474#if EV_USE_EVENTFD 3027#if EV_USE_SIGNALFD
1475 if (evfd >= 0) 3028 if (ev_is_active (&sigfd_w))
1476 close (evfd); 3029 close (sigfd);
1477#endif 3030#endif
1478
1479 if (evpipe [0] >= 0)
1480 {
1481 close (evpipe [0]);
1482 close (evpipe [1]);
1483 }
1484 }
1485 3031
1486#if EV_USE_INOTIFY 3032#if EV_USE_INOTIFY
1487 if (fs_fd >= 0) 3033 if (fs_fd >= 0)
1488 close (fs_fd); 3034 close (fs_fd);
1489#endif 3035#endif
1490 3036
1491 if (backend_fd >= 0) 3037 if (backend_fd >= 0)
1492 close (backend_fd); 3038 close (backend_fd);
1493 3039
3040#if EV_USE_IOCP
3041 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
3042#endif
1494#if EV_USE_PORT 3043#if EV_USE_PORT
1495 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3044 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1496#endif 3045#endif
1497#if EV_USE_KQUEUE 3046#if EV_USE_KQUEUE
1498 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3047 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
3048#endif
3049#if EV_USE_LINUXAIO
3050 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
1499#endif 3051#endif
1500#if EV_USE_EPOLL 3052#if EV_USE_EPOLL
1501 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3053 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
1502#endif 3054#endif
1503#if EV_USE_POLL 3055#if EV_USE_POLL
1504 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3056 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
1505#endif 3057#endif
1506#if EV_USE_SELECT 3058#if EV_USE_SELECT
1507 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3059 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
1508#endif 3060#endif
1509 3061
1510 for (i = NUMPRI; i--; ) 3062 for (i = NUMPRI; i--; )
1511 { 3063 {
1512 array_free (pending, [i]); 3064 array_free (pending, [i]);
1513#if EV_IDLE_ENABLE 3065#if EV_IDLE_ENABLE
1514 array_free (idle, [i]); 3066 array_free (idle, [i]);
1515#endif 3067#endif
1516 } 3068 }
1517 3069
1518 ev_free (anfds); anfdmax = 0; 3070 ev_free (anfds); anfds = 0; anfdmax = 0;
1519 3071
1520 /* have to use the microsoft-never-gets-it-right macro */ 3072 /* have to use the microsoft-never-gets-it-right macro */
1521 array_free (rfeed, EMPTY); 3073 array_free (rfeed, EMPTY);
1522 array_free (fdchange, EMPTY); 3074 array_free (fdchange, EMPTY);
1523 array_free (timer, EMPTY); 3075 array_free (timer, EMPTY);
… …
1525 array_free (periodic, EMPTY); 3077 array_free (periodic, EMPTY);
1526#endif 3078#endif
1527#if EV_FORK_ENABLE 3079#if EV_FORK_ENABLE
1528 array_free (fork, EMPTY); 3080 array_free (fork, EMPTY);
1529#endif 3081#endif
3082#if EV_CLEANUP_ENABLE
3083 array_free (cleanup, EMPTY);
3084#endif
1530 array_free (prepare, EMPTY); 3085 array_free (prepare, EMPTY);
1531 array_free (check, EMPTY); 3086 array_free (check, EMPTY);
1532#if EV_ASYNC_ENABLE 3087#if EV_ASYNC_ENABLE
1533 array_free (async, EMPTY); 3088 array_free (async, EMPTY);
1534#endif 3089#endif
1535 3090
1536 backend = 0; 3091 backend = 0;
3092
3093#if EV_MULTIPLICITY
3094 if (ev_is_default_loop (EV_A))
3095#endif
3096 ev_default_loop_ptr = 0;
3097#if EV_MULTIPLICITY
3098 else
3099 ev_free (EV_A);
3100#endif
1537} 3101}
1538 3102
1539#if EV_USE_INOTIFY 3103#if EV_USE_INOTIFY
1540inline_size void infy_fork (EV_P); 3104inline_size void infy_fork (EV_P);
1541#endif 3105#endif
1542 3106
1543inline_size void 3107inline_size void
1544loop_fork (EV_P) 3108loop_fork (EV_P)
1545{ 3109{
1546#if EV_USE_PORT 3110#if EV_USE_PORT
1547 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3111 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1548#endif 3112#endif
1549#if EV_USE_KQUEUE 3113#if EV_USE_KQUEUE
1550 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 3114 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
3115#endif
3116#if EV_USE_LINUXAIO
3117 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
1551#endif 3118#endif
1552#if EV_USE_EPOLL 3119#if EV_USE_EPOLL
1553 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3120 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
1554#endif 3121#endif
1555#if EV_USE_INOTIFY 3122#if EV_USE_INOTIFY
1556 infy_fork (EV_A); 3123 infy_fork (EV_A);
1557#endif 3124#endif
1558 3125
3126#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1559 if (ev_is_active (&pipe_w)) 3127 if (ev_is_active (&pipe_w) && postfork != 2)
1560 { 3128 {
1561 /* this "locks" the handlers against writing to the pipe */ 3129 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1562 /* while we modify the fd vars */
1563 gotsig = 1;
1564#if EV_ASYNC_ENABLE
1565 gotasync = 1;
1566#endif
1567 3130
1568 ev_ref (EV_A); 3131 ev_ref (EV_A);
1569 ev_io_stop (EV_A_ &pipe_w); 3132 ev_io_stop (EV_A_ &pipe_w);
1570 3133
1571#if EV_USE_EVENTFD
1572 if (evfd >= 0)
1573 close (evfd);
1574#endif
1575
1576 if (evpipe [0] >= 0) 3134 if (evpipe [0] >= 0)
1577 { 3135 EV_WIN32_CLOSE_FD (evpipe [0]);
1578 close (evpipe [0]);
1579 close (evpipe [1]);
1580 }
1581 3136
1582 evpipe_init (EV_A); 3137 evpipe_init (EV_A);
1583 /* now iterate over everything, in case we missed something */ 3138 /* iterate over everything, in case we missed something before */
1584 pipecb (EV_A_ &pipe_w, EV_READ); 3139 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1585 } 3140 }
3141#endif
1586 3142
1587 postfork = 0; 3143 postfork = 0;
1588} 3144}
1589 3145
1590#if EV_MULTIPLICITY 3146#if EV_MULTIPLICITY
1591 3147
3148ecb_cold
1592struct ev_loop * 3149struct ev_loop *
1593ev_loop_new (unsigned int flags) 3150ev_loop_new (unsigned int flags) EV_NOEXCEPT
1594{ 3151{
1595 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3152 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1596 3153
1597 memset (loop, 0, sizeof (struct ev_loop)); 3154 memset (EV_A, 0, sizeof (struct ev_loop));
1598
1599 loop_init (EV_A_ flags); 3155 loop_init (EV_A_ flags);
1600 3156
1601 if (ev_backend (EV_A)) 3157 if (ev_backend (EV_A))
1602 return loop; 3158 return EV_A;
1603 3159
3160 ev_free (EV_A);
1604 return 0; 3161 return 0;
1605} 3162}
1606 3163
1607void 3164#endif /* multiplicity */
1608ev_loop_destroy (EV_P)
1609{
1610 loop_destroy (EV_A);
1611 ev_free (loop);
1612}
1613
1614void
1615ev_loop_fork (EV_P)
1616{
1617 postfork = 1; /* must be in line with ev_default_fork */
1618}
1619 3165
1620#if EV_VERIFY 3166#if EV_VERIFY
1621static void noinline 3167ecb_noinline ecb_cold
3168static void
1622verify_watcher (EV_P_ W w) 3169verify_watcher (EV_P_ W w)
1623{ 3170{
1624 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3171 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1625 3172
1626 if (w->pending) 3173 if (w->pending)
1627 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3174 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1628} 3175}
1629 3176
1630static void noinline 3177ecb_noinline ecb_cold
3178static void
1631verify_heap (EV_P_ ANHE *heap, int N) 3179verify_heap (EV_P_ ANHE *heap, int N)
1632{ 3180{
1633 int i; 3181 int i;
1634 3182
1635 for (i = HEAP0; i < N + HEAP0; ++i) 3183 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1640 3188
1641 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3189 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1642 } 3190 }
1643} 3191}
1644 3192
1645static void noinline 3193ecb_noinline ecb_cold
3194static void
1646array_verify (EV_P_ W *ws, int cnt) 3195array_verify (EV_P_ W *ws, int cnt)
1647{ 3196{
1648 while (cnt--) 3197 while (cnt--)
1649 { 3198 {
1650 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3199 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1651 verify_watcher (EV_A_ ws [cnt]); 3200 verify_watcher (EV_A_ ws [cnt]);
1652 } 3201 }
1653} 3202}
1654#endif 3203#endif
1655 3204
1656void 3205#if EV_FEATURE_API
1657ev_loop_verify (EV_P) 3206void ecb_cold
3207ev_verify (EV_P) EV_NOEXCEPT
1658{ 3208{
1659#if EV_VERIFY 3209#if EV_VERIFY
1660 int i; 3210 int i;
1661 WL w; 3211 WL w, w2;
1662 3212
1663 assert (activecnt >= -1); 3213 assert (activecnt >= -1);
1664 3214
1665 assert (fdchangemax >= fdchangecnt); 3215 assert (fdchangemax >= fdchangecnt);
1666 for (i = 0; i < fdchangecnt; ++i) 3216 for (i = 0; i < fdchangecnt; ++i)
1667 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3217 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1668 3218
1669 assert (anfdmax >= 0); 3219 assert (anfdmax >= 0);
1670 for (i = 0; i < anfdmax; ++i) 3220 for (i = 0; i < anfdmax; ++i)
3221 {
3222 int j = 0;
3223
1671 for (w = anfds [i].head; w; w = w->next) 3224 for (w = w2 = anfds [i].head; w; w = w->next)
1672 { 3225 {
1673 verify_watcher (EV_A_ (W)w); 3226 verify_watcher (EV_A_ (W)w);
3227
3228 if (j++ & 1)
3229 {
3230 assert (("libev: io watcher list contains a loop", w != w2));
3231 w2 = w2->next;
3232 }
3233
1674 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3234 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1675 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 3235 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1676 } 3236 }
3237 }
1677 3238
1678 assert (timermax >= timercnt); 3239 assert (timermax >= timercnt);
1679 verify_heap (EV_A_ timers, timercnt); 3240 verify_heap (EV_A_ timers, timercnt);
1680 3241
1681#if EV_PERIODIC_ENABLE 3242#if EV_PERIODIC_ENABLE
… …
1696#if EV_FORK_ENABLE 3257#if EV_FORK_ENABLE
1697 assert (forkmax >= forkcnt); 3258 assert (forkmax >= forkcnt);
1698 array_verify (EV_A_ (W *)forks, forkcnt); 3259 array_verify (EV_A_ (W *)forks, forkcnt);
1699#endif 3260#endif
1700 3261
3262#if EV_CLEANUP_ENABLE
3263 assert (cleanupmax >= cleanupcnt);
3264 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
3265#endif
3266
1701#if EV_ASYNC_ENABLE 3267#if EV_ASYNC_ENABLE
1702 assert (asyncmax >= asynccnt); 3268 assert (asyncmax >= asynccnt);
1703 array_verify (EV_A_ (W *)asyncs, asynccnt); 3269 array_verify (EV_A_ (W *)asyncs, asynccnt);
1704#endif 3270#endif
1705 3271
3272#if EV_PREPARE_ENABLE
1706 assert (preparemax >= preparecnt); 3273 assert (preparemax >= preparecnt);
1707 array_verify (EV_A_ (W *)prepares, preparecnt); 3274 array_verify (EV_A_ (W *)prepares, preparecnt);
3275#endif
1708 3276
3277#if EV_CHECK_ENABLE
1709 assert (checkmax >= checkcnt); 3278 assert (checkmax >= checkcnt);
1710 array_verify (EV_A_ (W *)checks, checkcnt); 3279 array_verify (EV_A_ (W *)checks, checkcnt);
3280#endif
1711 3281
1712# if 0 3282# if 0
3283#if EV_CHILD_ENABLE
1713 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 3284 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1714 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 3285 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
3286#endif
1715# endif 3287# endif
1716#endif 3288#endif
1717} 3289}
1718 3290#endif
1719#endif /* multiplicity */
1720 3291
1721#if EV_MULTIPLICITY 3292#if EV_MULTIPLICITY
3293ecb_cold
1722struct ev_loop * 3294struct ev_loop *
1723ev_default_loop_init (unsigned int flags)
1724#else 3295#else
1725int 3296int
3297#endif
1726ev_default_loop (unsigned int flags) 3298ev_default_loop (unsigned int flags) EV_NOEXCEPT
1727#endif
1728{ 3299{
1729 if (!ev_default_loop_ptr) 3300 if (!ev_default_loop_ptr)
1730 { 3301 {
1731#if EV_MULTIPLICITY 3302#if EV_MULTIPLICITY
1732 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 3303 EV_P = ev_default_loop_ptr = &default_loop_struct;
1733#else 3304#else
1734 ev_default_loop_ptr = 1; 3305 ev_default_loop_ptr = 1;
1735#endif 3306#endif
1736 3307
1737 loop_init (EV_A_ flags); 3308 loop_init (EV_A_ flags);
1738 3309
1739 if (ev_backend (EV_A)) 3310 if (ev_backend (EV_A))
1740 { 3311 {
1741#ifndef _WIN32 3312#if EV_CHILD_ENABLE
1742 ev_signal_init (&childev, childcb, SIGCHLD); 3313 ev_signal_init (&childev, childcb, SIGCHLD);
1743 ev_set_priority (&childev, EV_MAXPRI); 3314 ev_set_priority (&childev, EV_MAXPRI);
1744 ev_signal_start (EV_A_ &childev); 3315 ev_signal_start (EV_A_ &childev);
1745 ev_unref (EV_A); /* child watcher should not keep loop alive */ 3316 ev_unref (EV_A); /* child watcher should not keep loop alive */
1746#endif 3317#endif
… …
1751 3322
1752 return ev_default_loop_ptr; 3323 return ev_default_loop_ptr;
1753} 3324}
1754 3325
1755void 3326void
1756ev_default_destroy (void) 3327ev_loop_fork (EV_P) EV_NOEXCEPT
1757{ 3328{
1758#if EV_MULTIPLICITY 3329 postfork = 1;
1759 struct ev_loop *loop = ev_default_loop_ptr;
1760#endif
1761
1762 ev_default_loop_ptr = 0;
1763
1764#ifndef _WIN32
1765 ev_ref (EV_A); /* child watcher */
1766 ev_signal_stop (EV_A_ &childev);
1767#endif
1768
1769 loop_destroy (EV_A);
1770}
1771
1772void
1773ev_default_fork (void)
1774{
1775#if EV_MULTIPLICITY
1776 struct ev_loop *loop = ev_default_loop_ptr;
1777#endif
1778
1779 postfork = 1; /* must be in line with ev_loop_fork */
1780} 3330}
1781 3331
1782/*****************************************************************************/ 3332/*****************************************************************************/
1783 3333
1784void 3334void
1785ev_invoke (EV_P_ void *w, int revents) 3335ev_invoke (EV_P_ void *w, int revents)
1786{ 3336{
1787 EV_CB_INVOKE ((W)w, revents); 3337 EV_CB_INVOKE ((W)w, revents);
1788} 3338}
1789 3339
1790inline_speed void 3340unsigned int
1791call_pending (EV_P) 3341ev_pending_count (EV_P) EV_NOEXCEPT
1792{ 3342{
1793 int pri; 3343 int pri;
3344 unsigned int count = 0;
1794 3345
1795 for (pri = NUMPRI; pri--; ) 3346 for (pri = NUMPRI; pri--; )
3347 count += pendingcnt [pri];
3348
3349 return count;
3350}
3351
3352ecb_noinline
3353void
3354ev_invoke_pending (EV_P)
3355{
3356 pendingpri = NUMPRI;
3357
3358 do
3359 {
3360 --pendingpri;
3361
3362 /* pendingpri possibly gets modified in the inner loop */
1796 while (pendingcnt [pri]) 3363 while (pendingcnt [pendingpri])
1797 { 3364 {
1798 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3365 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
1799 3366
1800 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1801 /* ^ this is no longer true, as pending_w could be here */
1802
1803 p->w->pending = 0; 3367 p->w->pending = 0;
1804 EV_CB_INVOKE (p->w, p->events); 3368 EV_CB_INVOKE (p->w, p->events);
1805 EV_FREQUENT_CHECK; 3369 EV_FREQUENT_CHECK;
1806 } 3370 }
3371 }
3372 while (pendingpri);
1807} 3373}
1808 3374
1809#if EV_IDLE_ENABLE 3375#if EV_IDLE_ENABLE
1810/* make idle watchers pending. this handles the "call-idle */ 3376/* make idle watchers pending. this handles the "call-idle */
1811/* only when higher priorities are idle" logic */ 3377/* only when higher priorities are idle" logic */
1812inline_size void 3378inline_size void
1813idle_reify (EV_P) 3379idle_reify (EV_P)
1814{ 3380{
1815 if (expect_false (idleall)) 3381 if (ecb_expect_false (idleall))
1816 { 3382 {
1817 int pri; 3383 int pri;
1818 3384
1819 for (pri = NUMPRI; pri--; ) 3385 for (pri = NUMPRI; pri--; )
1820 { 3386 {
… …
1863 EV_FREQUENT_CHECK; 3429 EV_FREQUENT_CHECK;
1864 feed_reverse (EV_A_ (W)w); 3430 feed_reverse (EV_A_ (W)w);
1865 } 3431 }
1866 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 3432 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1867 3433
1868 feed_reverse_done (EV_A_ EV_TIMEOUT); 3434 feed_reverse_done (EV_A_ EV_TIMER);
1869 } 3435 }
1870} 3436}
1871 3437
1872#if EV_PERIODIC_ENABLE 3438#if EV_PERIODIC_ENABLE
3439
3440ecb_noinline
3441static void
3442periodic_recalc (EV_P_ ev_periodic *w)
3443{
3444 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3445 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3446
3447 /* the above almost always errs on the low side */
3448 while (at <= ev_rt_now)
3449 {
3450 ev_tstamp nat = at + w->interval;
3451
3452 /* when resolution fails us, we use ev_rt_now */
3453 if (ecb_expect_false (nat == at))
3454 {
3455 at = ev_rt_now;
3456 break;
3457 }
3458
3459 at = nat;
3460 }
3461
3462 ev_at (w) = at;
3463}
3464
1873/* make periodics pending */ 3465/* make periodics pending */
1874inline_size void 3466inline_size void
1875periodics_reify (EV_P) 3467periodics_reify (EV_P)
1876{ 3468{
1877 EV_FREQUENT_CHECK; 3469 EV_FREQUENT_CHECK;
1878 3470
1879 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3471 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1880 { 3472 {
1881 int feed_count = 0;
1882
1883 do 3473 do
1884 { 3474 {
1885 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3475 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
1886 3476
1887 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3477 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
1896 ANHE_at_cache (periodics [HEAP0]); 3486 ANHE_at_cache (periodics [HEAP0]);
1897 downheap (periodics, periodiccnt, HEAP0); 3487 downheap (periodics, periodiccnt, HEAP0);
1898 } 3488 }
1899 else if (w->interval) 3489 else if (w->interval)
1900 { 3490 {
1901 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3491 periodic_recalc (EV_A_ w);
1902 /* if next trigger time is not sufficiently in the future, put it there */
1903 /* this might happen because of floating point inexactness */
1904 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1905 {
1906 ev_at (w) += w->interval;
1907
1908 /* if interval is unreasonably low we might still have a time in the past */
1909 /* so correct this. this will make the periodic very inexact, but the user */
1910 /* has effectively asked to get triggered more often than possible */
1911 if (ev_at (w) < ev_rt_now)
1912 ev_at (w) = ev_rt_now;
1913 }
1914
1915 ANHE_at_cache (periodics [HEAP0]); 3492 ANHE_at_cache (periodics [HEAP0]);
1916 downheap (periodics, periodiccnt, HEAP0); 3493 downheap (periodics, periodiccnt, HEAP0);
1917 } 3494 }
1918 else 3495 else
1919 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3496 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
1926 feed_reverse_done (EV_A_ EV_PERIODIC); 3503 feed_reverse_done (EV_A_ EV_PERIODIC);
1927 } 3504 }
1928} 3505}
1929 3506
1930/* simply recalculate all periodics */ 3507/* simply recalculate all periodics */
1931/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 3508/* TODO: maybe ensure that at least one event happens when jumping forward? */
1932static void noinline 3509ecb_noinline ecb_cold
3510static void
1933periodics_reschedule (EV_P) 3511periodics_reschedule (EV_P)
1934{ 3512{
1935 int i; 3513 int i;
1936 3514
1937 /* adjust periodics after time jump */ 3515 /* adjust periodics after time jump */
… …
1940 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3518 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1941 3519
1942 if (w->reschedule_cb) 3520 if (w->reschedule_cb)
1943 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3521 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1944 else if (w->interval) 3522 else if (w->interval)
1945 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3523 periodic_recalc (EV_A_ w);
1946 3524
1947 ANHE_at_cache (periodics [i]); 3525 ANHE_at_cache (periodics [i]);
1948 } 3526 }
1949 3527
1950 reheap (periodics, periodiccnt); 3528 reheap (periodics, periodiccnt);
1951} 3529}
1952#endif 3530#endif
1953 3531
1954/* adjust all timers by a given offset */ 3532/* adjust all timers by a given offset */
1955static void noinline 3533ecb_noinline ecb_cold
3534static void
1956timers_reschedule (EV_P_ ev_tstamp adjust) 3535timers_reschedule (EV_P_ ev_tstamp adjust)
1957{ 3536{
1958 int i; 3537 int i;
1959 3538
1960 for (i = 0; i < timercnt; ++i) 3539 for (i = 0; i < timercnt; ++i)
… …
1964 ANHE_at_cache (*he); 3543 ANHE_at_cache (*he);
1965 } 3544 }
1966} 3545}
1967 3546
1968/* fetch new monotonic and realtime times from the kernel */ 3547/* fetch new monotonic and realtime times from the kernel */
1969/* also detetc if there was a timejump, and act accordingly */ 3548/* also detect if there was a timejump, and act accordingly */
1970inline_speed void 3549inline_speed void
1971time_update (EV_P_ ev_tstamp max_block) 3550time_update (EV_P_ ev_tstamp max_block)
1972{ 3551{
1973#if EV_USE_MONOTONIC 3552#if EV_USE_MONOTONIC
1974 if (expect_true (have_monotonic)) 3553 if (ecb_expect_true (have_monotonic))
1975 { 3554 {
1976 int i; 3555 int i;
1977 ev_tstamp odiff = rtmn_diff; 3556 ev_tstamp odiff = rtmn_diff;
1978 3557
1979 mn_now = get_clock (); 3558 mn_now = get_clock ();
1980 3559
1981 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3560 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
1982 /* interpolate in the meantime */ 3561 /* interpolate in the meantime */
1983 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 3562 if (ecb_expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1984 { 3563 {
1985 ev_rt_now = rtmn_diff + mn_now; 3564 ev_rt_now = rtmn_diff + mn_now;
1986 return; 3565 return;
1987 } 3566 }
1988 3567
… …
1997 * doesn't hurt either as we only do this on time-jumps or 3576 * doesn't hurt either as we only do this on time-jumps or
1998 * in the unlikely event of having been preempted here. 3577 * in the unlikely event of having been preempted here.
1999 */ 3578 */
2000 for (i = 4; --i; ) 3579 for (i = 4; --i; )
2001 { 3580 {
3581 ev_tstamp diff;
2002 rtmn_diff = ev_rt_now - mn_now; 3582 rtmn_diff = ev_rt_now - mn_now;
2003 3583
3584 diff = odiff - rtmn_diff;
3585
2004 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3586 if (ecb_expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2005 return; /* all is well */ 3587 return; /* all is well */
2006 3588
2007 ev_rt_now = ev_time (); 3589 ev_rt_now = ev_time ();
2008 mn_now = get_clock (); 3590 mn_now = get_clock ();
2009 now_floor = mn_now; 3591 now_floor = mn_now;
… …
2018 else 3600 else
2019#endif 3601#endif
2020 { 3602 {
2021 ev_rt_now = ev_time (); 3603 ev_rt_now = ev_time ();
2022 3604
2023 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 3605 if (ecb_expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
2024 { 3606 {
2025 /* adjust timers. this is easy, as the offset is the same for all of them */ 3607 /* adjust timers. this is easy, as the offset is the same for all of them */
2026 timers_reschedule (EV_A_ ev_rt_now - mn_now); 3608 timers_reschedule (EV_A_ ev_rt_now - mn_now);
2027#if EV_PERIODIC_ENABLE 3609#if EV_PERIODIC_ENABLE
2028 periodics_reschedule (EV_A); 3610 periodics_reschedule (EV_A);
… …
2031 3613
2032 mn_now = ev_rt_now; 3614 mn_now = ev_rt_now;
2033 } 3615 }
2034} 3616}
2035 3617
2036void 3618int
2037ev_loop (EV_P_ int flags) 3619ev_run (EV_P_ int flags)
2038{ 3620{
3621#if EV_FEATURE_API
2039 ++loop_depth; 3622 ++loop_depth;
3623#endif
2040 3624
3625 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
3626
2041 loop_done = EVUNLOOP_CANCEL; 3627 loop_done = EVBREAK_CANCEL;
2042 3628
2043 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 3629 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2044 3630
2045 do 3631 do
2046 { 3632 {
2047#if EV_VERIFY >= 2 3633#if EV_VERIFY >= 2
2048 ev_loop_verify (EV_A); 3634 ev_verify (EV_A);
2049#endif 3635#endif
2050 3636
2051#ifndef _WIN32 3637#ifndef _WIN32
2052 if (expect_false (curpid)) /* penalise the forking check even more */ 3638 if (ecb_expect_false (curpid)) /* penalise the forking check even more */
2053 if (expect_false (getpid () != curpid)) 3639 if (ecb_expect_false (getpid () != curpid))
2054 { 3640 {
2055 curpid = getpid (); 3641 curpid = getpid ();
2056 postfork = 1; 3642 postfork = 1;
2057 } 3643 }
2058#endif 3644#endif
2059 3645
2060#if EV_FORK_ENABLE 3646#if EV_FORK_ENABLE
2061 /* we might have forked, so queue fork handlers */ 3647 /* we might have forked, so queue fork handlers */
2062 if (expect_false (postfork)) 3648 if (ecb_expect_false (postfork))
2063 if (forkcnt) 3649 if (forkcnt)
2064 { 3650 {
2065 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3651 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2066 call_pending (EV_A); 3652 EV_INVOKE_PENDING;
2067 } 3653 }
2068#endif 3654#endif
2069 3655
3656#if EV_PREPARE_ENABLE
2070 /* queue prepare watchers (and execute them) */ 3657 /* queue prepare watchers (and execute them) */
2071 if (expect_false (preparecnt)) 3658 if (ecb_expect_false (preparecnt))
2072 { 3659 {
2073 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3660 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2074 call_pending (EV_A); 3661 EV_INVOKE_PENDING;
2075 } 3662 }
3663#endif
3664
3665 if (ecb_expect_false (loop_done))
3666 break;
2076 3667
2077 /* we might have forked, so reify kernel state if necessary */ 3668 /* we might have forked, so reify kernel state if necessary */
2078 if (expect_false (postfork)) 3669 if (ecb_expect_false (postfork))
2079 loop_fork (EV_A); 3670 loop_fork (EV_A);
2080 3671
2081 /* update fd-related kernel structures */ 3672 /* update fd-related kernel structures */
2082 fd_reify (EV_A); 3673 fd_reify (EV_A);
2083 3674
2084 /* calculate blocking time */ 3675 /* calculate blocking time */
2085 { 3676 {
2086 ev_tstamp waittime = 0.; 3677 ev_tstamp waittime = 0.;
2087 ev_tstamp sleeptime = 0.; 3678 ev_tstamp sleeptime = 0.;
2088 3679
3680 /* remember old timestamp for io_blocktime calculation */
3681 ev_tstamp prev_mn_now = mn_now;
3682
3683 /* update time to cancel out callback processing overhead */
3684 time_update (EV_A_ 1e100);
3685
3686 /* from now on, we want a pipe-wake-up */
3687 pipe_write_wanted = 1;
3688
3689 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3690
2089 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3691 if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2090 { 3692 {
2091 /* remember old timestamp for io_blocktime calculation */
2092 ev_tstamp prev_mn_now = mn_now;
2093
2094 /* update time to cancel out callback processing overhead */
2095 time_update (EV_A_ 1e100);
2096
2097 waittime = MAX_BLOCKTIME; 3693 waittime = MAX_BLOCKTIME;
2098 3694
2099 if (timercnt) 3695 if (timercnt)
2100 { 3696 {
2101 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3697 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2102 if (waittime > to) waittime = to; 3698 if (waittime > to) waittime = to;
2103 } 3699 }
2104 3700
2105#if EV_PERIODIC_ENABLE 3701#if EV_PERIODIC_ENABLE
2106 if (periodiccnt) 3702 if (periodiccnt)
2107 { 3703 {
2108 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3704 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2109 if (waittime > to) waittime = to; 3705 if (waittime > to) waittime = to;
2110 } 3706 }
2111#endif 3707#endif
2112 3708
2113 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3709 /* don't let timeouts decrease the waittime below timeout_blocktime */
2114 if (expect_false (waittime < timeout_blocktime)) 3710 if (ecb_expect_false (waittime < timeout_blocktime))
2115 waittime = timeout_blocktime; 3711 waittime = timeout_blocktime;
2116 3712
3713 /* at this point, we NEED to wait, so we have to ensure */
3714 /* to pass a minimum nonzero value to the backend */
3715 if (ecb_expect_false (waittime < backend_mintime))
3716 waittime = backend_mintime;
3717
2117 /* extra check because io_blocktime is commonly 0 */ 3718 /* extra check because io_blocktime is commonly 0 */
2118 if (expect_false (io_blocktime)) 3719 if (ecb_expect_false (io_blocktime))
2119 { 3720 {
2120 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3721 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2121 3722
2122 if (sleeptime > waittime - backend_fudge) 3723 if (sleeptime > waittime - backend_mintime)
2123 sleeptime = waittime - backend_fudge; 3724 sleeptime = waittime - backend_mintime;
2124 3725
2125 if (expect_true (sleeptime > 0.)) 3726 if (ecb_expect_true (sleeptime > 0.))
2126 { 3727 {
2127 ev_sleep (sleeptime); 3728 ev_sleep (sleeptime);
2128 waittime -= sleeptime; 3729 waittime -= sleeptime;
2129 } 3730 }
2130 } 3731 }
2131 } 3732 }
2132 3733
3734#if EV_FEATURE_API
2133 ++loop_count; 3735 ++loop_count;
3736#endif
3737 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2134 backend_poll (EV_A_ waittime); 3738 backend_poll (EV_A_ waittime);
3739 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3740
3741 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3742
3743 ECB_MEMORY_FENCE_ACQUIRE;
3744 if (pipe_write_skipped)
3745 {
3746 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3747 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3748 }
2135 3749
2136 /* update ev_rt_now, do magic */ 3750 /* update ev_rt_now, do magic */
2137 time_update (EV_A_ waittime + sleeptime); 3751 time_update (EV_A_ waittime + sleeptime);
2138 } 3752 }
2139 3753
… …
2146#if EV_IDLE_ENABLE 3760#if EV_IDLE_ENABLE
2147 /* queue idle watchers unless other events are pending */ 3761 /* queue idle watchers unless other events are pending */
2148 idle_reify (EV_A); 3762 idle_reify (EV_A);
2149#endif 3763#endif
2150 3764
3765#if EV_CHECK_ENABLE
2151 /* queue check watchers, to be executed first */ 3766 /* queue check watchers, to be executed first */
2152 if (expect_false (checkcnt)) 3767 if (ecb_expect_false (checkcnt))
2153 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3768 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3769#endif
2154 3770
2155 call_pending (EV_A); 3771 EV_INVOKE_PENDING;
2156 } 3772 }
2157 while (expect_true ( 3773 while (ecb_expect_true (
2158 activecnt 3774 activecnt
2159 && !loop_done 3775 && !loop_done
2160 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3776 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2161 )); 3777 ));
2162 3778
2163 if (loop_done == EVUNLOOP_ONE) 3779 if (loop_done == EVBREAK_ONE)
2164 loop_done = EVUNLOOP_CANCEL; 3780 loop_done = EVBREAK_CANCEL;
2165 3781
3782#if EV_FEATURE_API
2166 --loop_depth; 3783 --loop_depth;
2167} 3784#endif
2168 3785
3786 return activecnt;
3787}
3788
2169void 3789void
2170ev_unloop (EV_P_ int how) 3790ev_break (EV_P_ int how) EV_NOEXCEPT
2171{ 3791{
2172 loop_done = how; 3792 loop_done = how;
2173} 3793}
2174 3794
2175void 3795void
2176ev_ref (EV_P) 3796ev_ref (EV_P) EV_NOEXCEPT
2177{ 3797{
2178 ++activecnt; 3798 ++activecnt;
2179} 3799}
2180 3800
2181void 3801void
2182ev_unref (EV_P) 3802ev_unref (EV_P) EV_NOEXCEPT
2183{ 3803{
2184 --activecnt; 3804 --activecnt;
2185} 3805}
2186 3806
2187void 3807void
2188ev_now_update (EV_P) 3808ev_now_update (EV_P) EV_NOEXCEPT
2189{ 3809{
2190 time_update (EV_A_ 1e100); 3810 time_update (EV_A_ 1e100);
2191} 3811}
2192 3812
2193void 3813void
2194ev_suspend (EV_P) 3814ev_suspend (EV_P) EV_NOEXCEPT
2195{ 3815{
2196 ev_now_update (EV_A); 3816 ev_now_update (EV_A);
2197} 3817}
2198 3818
2199void 3819void
2200ev_resume (EV_P) 3820ev_resume (EV_P) EV_NOEXCEPT
2201{ 3821{
2202 ev_tstamp mn_prev = mn_now; 3822 ev_tstamp mn_prev = mn_now;
2203 3823
2204 ev_now_update (EV_A); 3824 ev_now_update (EV_A);
2205 timers_reschedule (EV_A_ mn_now - mn_prev); 3825 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2222inline_size void 3842inline_size void
2223wlist_del (WL *head, WL elem) 3843wlist_del (WL *head, WL elem)
2224{ 3844{
2225 while (*head) 3845 while (*head)
2226 { 3846 {
2227 if (*head == elem) 3847 if (ecb_expect_true (*head == elem))
2228 { 3848 {
2229 *head = elem->next; 3849 *head = elem->next;
2230 return; 3850 break;
2231 } 3851 }
2232 3852
2233 head = &(*head)->next; 3853 head = &(*head)->next;
2234 } 3854 }
2235} 3855}
… …
2244 w->pending = 0; 3864 w->pending = 0;
2245 } 3865 }
2246} 3866}
2247 3867
2248int 3868int
2249ev_clear_pending (EV_P_ void *w) 3869ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
2250{ 3870{
2251 W w_ = (W)w; 3871 W w_ = (W)w;
2252 int pending = w_->pending; 3872 int pending = w_->pending;
2253 3873
2254 if (expect_true (pending)) 3874 if (ecb_expect_true (pending))
2255 { 3875 {
2256 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 3876 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2257 p->w = (W)&pending_w; 3877 p->w = (W)&pending_w;
2258 w_->pending = 0; 3878 w_->pending = 0;
2259 return p->events; 3879 return p->events;
… …
2286 w->active = 0; 3906 w->active = 0;
2287} 3907}
2288 3908
2289/*****************************************************************************/ 3909/*****************************************************************************/
2290 3910
2291void noinline 3911ecb_noinline
3912void
2292ev_io_start (EV_P_ ev_io *w) 3913ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
2293{ 3914{
2294 int fd = w->fd; 3915 int fd = w->fd;
2295 3916
2296 if (expect_false (ev_is_active (w))) 3917 if (ecb_expect_false (ev_is_active (w)))
2297 return; 3918 return;
2298 3919
2299 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 3920 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2300 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 3921 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2301 3922
3923#if EV_VERIFY >= 2
3924 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
3925#endif
2302 EV_FREQUENT_CHECK; 3926 EV_FREQUENT_CHECK;
2303 3927
2304 ev_start (EV_A_ (W)w, 1); 3928 ev_start (EV_A_ (W)w, 1);
2305 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3929 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
2306 wlist_add (&anfds[fd].head, (WL)w); 3930 wlist_add (&anfds[fd].head, (WL)w);
2307 3931
3932 /* common bug, apparently */
3933 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3934
2308 fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1); 3935 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2309 w->events &= ~EV__IOFDSET; 3936 w->events &= ~EV__IOFDSET;
2310 3937
2311 EV_FREQUENT_CHECK; 3938 EV_FREQUENT_CHECK;
2312} 3939}
2313 3940
2314void noinline 3941ecb_noinline
3942void
2315ev_io_stop (EV_P_ ev_io *w) 3943ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
2316{ 3944{
2317 clear_pending (EV_A_ (W)w); 3945 clear_pending (EV_A_ (W)w);
2318 if (expect_false (!ev_is_active (w))) 3946 if (ecb_expect_false (!ev_is_active (w)))
2319 return; 3947 return;
2320 3948
2321 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 3949 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2322 3950
3951#if EV_VERIFY >= 2
3952 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
3953#endif
2323 EV_FREQUENT_CHECK; 3954 EV_FREQUENT_CHECK;
2324 3955
2325 wlist_del (&anfds[w->fd].head, (WL)w); 3956 wlist_del (&anfds[w->fd].head, (WL)w);
2326 ev_stop (EV_A_ (W)w); 3957 ev_stop (EV_A_ (W)w);
2327 3958
2328 fd_change (EV_A_ w->fd, 1); 3959 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2329 3960
2330 EV_FREQUENT_CHECK; 3961 EV_FREQUENT_CHECK;
2331} 3962}
2332 3963
2333void noinline 3964ecb_noinline
3965void
2334ev_timer_start (EV_P_ ev_timer *w) 3966ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
2335{ 3967{
2336 if (expect_false (ev_is_active (w))) 3968 if (ecb_expect_false (ev_is_active (w)))
2337 return; 3969 return;
2338 3970
2339 ev_at (w) += mn_now; 3971 ev_at (w) += mn_now;
2340 3972
2341 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 3973 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2342 3974
2343 EV_FREQUENT_CHECK; 3975 EV_FREQUENT_CHECK;
2344 3976
2345 ++timercnt; 3977 ++timercnt;
2346 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 3978 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
2347 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 3979 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
2348 ANHE_w (timers [ev_active (w)]) = (WT)w; 3980 ANHE_w (timers [ev_active (w)]) = (WT)w;
2349 ANHE_at_cache (timers [ev_active (w)]); 3981 ANHE_at_cache (timers [ev_active (w)]);
2350 upheap (timers, ev_active (w)); 3982 upheap (timers, ev_active (w));
2351 3983
2352 EV_FREQUENT_CHECK; 3984 EV_FREQUENT_CHECK;
2353 3985
2354 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3986 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2355} 3987}
2356 3988
2357void noinline 3989ecb_noinline
3990void
2358ev_timer_stop (EV_P_ ev_timer *w) 3991ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
2359{ 3992{
2360 clear_pending (EV_A_ (W)w); 3993 clear_pending (EV_A_ (W)w);
2361 if (expect_false (!ev_is_active (w))) 3994 if (ecb_expect_false (!ev_is_active (w)))
2362 return; 3995 return;
2363 3996
2364 EV_FREQUENT_CHECK; 3997 EV_FREQUENT_CHECK;
2365 3998
2366 { 3999 {
… …
2368 4001
2369 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 4002 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2370 4003
2371 --timercnt; 4004 --timercnt;
2372 4005
2373 if (expect_true (active < timercnt + HEAP0)) 4006 if (ecb_expect_true (active < timercnt + HEAP0))
2374 { 4007 {
2375 timers [active] = timers [timercnt + HEAP0]; 4008 timers [active] = timers [timercnt + HEAP0];
2376 adjustheap (timers, timercnt, active); 4009 adjustheap (timers, timercnt, active);
2377 } 4010 }
2378 } 4011 }
2379 4012
2380 EV_FREQUENT_CHECK;
2381
2382 ev_at (w) -= mn_now; 4013 ev_at (w) -= mn_now;
2383 4014
2384 ev_stop (EV_A_ (W)w); 4015 ev_stop (EV_A_ (W)w);
2385}
2386 4016
2387void noinline 4017 EV_FREQUENT_CHECK;
4018}
4019
4020ecb_noinline
4021void
2388ev_timer_again (EV_P_ ev_timer *w) 4022ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
2389{ 4023{
2390 EV_FREQUENT_CHECK; 4024 EV_FREQUENT_CHECK;
4025
4026 clear_pending (EV_A_ (W)w);
2391 4027
2392 if (ev_is_active (w)) 4028 if (ev_is_active (w))
2393 { 4029 {
2394 if (w->repeat) 4030 if (w->repeat)
2395 { 4031 {
… …
2407 } 4043 }
2408 4044
2409 EV_FREQUENT_CHECK; 4045 EV_FREQUENT_CHECK;
2410} 4046}
2411 4047
4048ev_tstamp
4049ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
4050{
4051 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
4052}
4053
2412#if EV_PERIODIC_ENABLE 4054#if EV_PERIODIC_ENABLE
2413void noinline 4055ecb_noinline
4056void
2414ev_periodic_start (EV_P_ ev_periodic *w) 4057ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
2415{ 4058{
2416 if (expect_false (ev_is_active (w))) 4059 if (ecb_expect_false (ev_is_active (w)))
2417 return; 4060 return;
2418 4061
2419 if (w->reschedule_cb) 4062 if (w->reschedule_cb)
2420 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4063 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2421 else if (w->interval) 4064 else if (w->interval)
2422 { 4065 {
2423 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 4066 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2424 /* this formula differs from the one in periodic_reify because we do not always round up */ 4067 periodic_recalc (EV_A_ w);
2425 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2426 } 4068 }
2427 else 4069 else
2428 ev_at (w) = w->offset; 4070 ev_at (w) = w->offset;
2429 4071
2430 EV_FREQUENT_CHECK; 4072 EV_FREQUENT_CHECK;
2431 4073
2432 ++periodiccnt; 4074 ++periodiccnt;
2433 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4075 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2434 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4076 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
2435 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4077 ANHE_w (periodics [ev_active (w)]) = (WT)w;
2436 ANHE_at_cache (periodics [ev_active (w)]); 4078 ANHE_at_cache (periodics [ev_active (w)]);
2437 upheap (periodics, ev_active (w)); 4079 upheap (periodics, ev_active (w));
2438 4080
2439 EV_FREQUENT_CHECK; 4081 EV_FREQUENT_CHECK;
2440 4082
2441 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4083 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2442} 4084}
2443 4085
2444void noinline 4086ecb_noinline
4087void
2445ev_periodic_stop (EV_P_ ev_periodic *w) 4088ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
2446{ 4089{
2447 clear_pending (EV_A_ (W)w); 4090 clear_pending (EV_A_ (W)w);
2448 if (expect_false (!ev_is_active (w))) 4091 if (ecb_expect_false (!ev_is_active (w)))
2449 return; 4092 return;
2450 4093
2451 EV_FREQUENT_CHECK; 4094 EV_FREQUENT_CHECK;
2452 4095
2453 { 4096 {
… …
2455 4098
2456 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 4099 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2457 4100
2458 --periodiccnt; 4101 --periodiccnt;
2459 4102
2460 if (expect_true (active < periodiccnt + HEAP0)) 4103 if (ecb_expect_true (active < periodiccnt + HEAP0))
2461 { 4104 {
2462 periodics [active] = periodics [periodiccnt + HEAP0]; 4105 periodics [active] = periodics [periodiccnt + HEAP0];
2463 adjustheap (periodics, periodiccnt, active); 4106 adjustheap (periodics, periodiccnt, active);
2464 } 4107 }
2465 } 4108 }
2466 4109
2467 EV_FREQUENT_CHECK;
2468
2469 ev_stop (EV_A_ (W)w); 4110 ev_stop (EV_A_ (W)w);
2470}
2471 4111
2472void noinline 4112 EV_FREQUENT_CHECK;
4113}
4114
4115ecb_noinline
4116void
2473ev_periodic_again (EV_P_ ev_periodic *w) 4117ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
2474{ 4118{
2475 /* TODO: use adjustheap and recalculation */ 4119 /* TODO: use adjustheap and recalculation */
2476 ev_periodic_stop (EV_A_ w); 4120 ev_periodic_stop (EV_A_ w);
2477 ev_periodic_start (EV_A_ w); 4121 ev_periodic_start (EV_A_ w);
2478} 4122}
… …
2480 4124
2481#ifndef SA_RESTART 4125#ifndef SA_RESTART
2482# define SA_RESTART 0 4126# define SA_RESTART 0
2483#endif 4127#endif
2484 4128
2485void noinline 4129#if EV_SIGNAL_ENABLE
4130
4131ecb_noinline
4132void
2486ev_signal_start (EV_P_ ev_signal *w) 4133ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
2487{ 4134{
4135 if (ecb_expect_false (ev_is_active (w)))
4136 return;
4137
4138 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
4139
2488#if EV_MULTIPLICITY 4140#if EV_MULTIPLICITY
2489 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4141 assert (("libev: a signal must not be attached to two different loops",
2490#endif 4142 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2491 if (expect_false (ev_is_active (w)))
2492 return;
2493 4143
2494 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0)); 4144 signals [w->signum - 1].loop = EV_A;
4145 ECB_MEMORY_FENCE_RELEASE;
4146#endif
2495 4147
2496 evpipe_init (EV_A);
2497
2498 EV_FREQUENT_CHECK; 4148 EV_FREQUENT_CHECK;
2499 4149
4150#if EV_USE_SIGNALFD
4151 if (sigfd == -2)
2500 { 4152 {
2501#ifndef _WIN32 4153 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2502 sigset_t full, prev; 4154 if (sigfd < 0 && errno == EINVAL)
2503 sigfillset (&full); 4155 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2504 sigprocmask (SIG_SETMASK, &full, &prev);
2505#endif
2506 4156
2507 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); 4157 if (sigfd >= 0)
4158 {
4159 fd_intern (sigfd); /* doing it twice will not hurt */
2508 4160
2509#ifndef _WIN32 4161 sigemptyset (&sigfd_set);
2510 sigprocmask (SIG_SETMASK, &prev, 0); 4162
2511#endif 4163 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
4164 ev_set_priority (&sigfd_w, EV_MAXPRI);
4165 ev_io_start (EV_A_ &sigfd_w);
4166 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
4167 }
2512 } 4168 }
4169
4170 if (sigfd >= 0)
4171 {
4172 /* TODO: check .head */
4173 sigaddset (&sigfd_set, w->signum);
4174 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
4175
4176 signalfd (sigfd, &sigfd_set, 0);
4177 }
4178#endif
2513 4179
2514 ev_start (EV_A_ (W)w, 1); 4180 ev_start (EV_A_ (W)w, 1);
2515 wlist_add (&signals [w->signum - 1].head, (WL)w); 4181 wlist_add (&signals [w->signum - 1].head, (WL)w);
2516 4182
2517 if (!((WL)w)->next) 4183 if (!((WL)w)->next)
4184# if EV_USE_SIGNALFD
4185 if (sigfd < 0) /*TODO*/
4186# endif
2518 { 4187 {
2519#if _WIN32 4188# ifdef _WIN32
4189 evpipe_init (EV_A);
4190
2520 signal (w->signum, ev_sighandler); 4191 signal (w->signum, ev_sighandler);
2521#else 4192# else
2522 struct sigaction sa; 4193 struct sigaction sa;
4194
4195 evpipe_init (EV_A);
4196
2523 sa.sa_handler = ev_sighandler; 4197 sa.sa_handler = ev_sighandler;
2524 sigfillset (&sa.sa_mask); 4198 sigfillset (&sa.sa_mask);
2525 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 4199 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2526 sigaction (w->signum, &sa, 0); 4200 sigaction (w->signum, &sa, 0);
4201
4202 if (origflags & EVFLAG_NOSIGMASK)
4203 {
4204 sigemptyset (&sa.sa_mask);
4205 sigaddset (&sa.sa_mask, w->signum);
4206 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
4207 }
2527#endif 4208#endif
2528 } 4209 }
2529 4210
2530 EV_FREQUENT_CHECK; 4211 EV_FREQUENT_CHECK;
2531} 4212}
2532 4213
2533void noinline 4214ecb_noinline
4215void
2534ev_signal_stop (EV_P_ ev_signal *w) 4216ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
2535{ 4217{
2536 clear_pending (EV_A_ (W)w); 4218 clear_pending (EV_A_ (W)w);
2537 if (expect_false (!ev_is_active (w))) 4219 if (ecb_expect_false (!ev_is_active (w)))
2538 return; 4220 return;
2539 4221
2540 EV_FREQUENT_CHECK; 4222 EV_FREQUENT_CHECK;
2541 4223
2542 wlist_del (&signals [w->signum - 1].head, (WL)w); 4224 wlist_del (&signals [w->signum - 1].head, (WL)w);
2543 ev_stop (EV_A_ (W)w); 4225 ev_stop (EV_A_ (W)w);
2544 4226
2545 if (!signals [w->signum - 1].head) 4227 if (!signals [w->signum - 1].head)
4228 {
4229#if EV_MULTIPLICITY
4230 signals [w->signum - 1].loop = 0; /* unattach from signal */
4231#endif
4232#if EV_USE_SIGNALFD
4233 if (sigfd >= 0)
4234 {
4235 sigset_t ss;
4236
4237 sigemptyset (&ss);
4238 sigaddset (&ss, w->signum);
4239 sigdelset (&sigfd_set, w->signum);
4240
4241 signalfd (sigfd, &sigfd_set, 0);
4242 sigprocmask (SIG_UNBLOCK, &ss, 0);
4243 }
4244 else
4245#endif
2546 signal (w->signum, SIG_DFL); 4246 signal (w->signum, SIG_DFL);
4247 }
2547 4248
2548 EV_FREQUENT_CHECK; 4249 EV_FREQUENT_CHECK;
2549} 4250}
2550 4251
4252#endif
4253
4254#if EV_CHILD_ENABLE
4255
2551void 4256void
2552ev_child_start (EV_P_ ev_child *w) 4257ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
2553{ 4258{
2554#if EV_MULTIPLICITY 4259#if EV_MULTIPLICITY
2555 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4260 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2556#endif 4261#endif
2557 if (expect_false (ev_is_active (w))) 4262 if (ecb_expect_false (ev_is_active (w)))
2558 return; 4263 return;
2559 4264
2560 EV_FREQUENT_CHECK; 4265 EV_FREQUENT_CHECK;
2561 4266
2562 ev_start (EV_A_ (W)w, 1); 4267 ev_start (EV_A_ (W)w, 1);
2563 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4268 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2564 4269
2565 EV_FREQUENT_CHECK; 4270 EV_FREQUENT_CHECK;
2566} 4271}
2567 4272
2568void 4273void
2569ev_child_stop (EV_P_ ev_child *w) 4274ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
2570{ 4275{
2571 clear_pending (EV_A_ (W)w); 4276 clear_pending (EV_A_ (W)w);
2572 if (expect_false (!ev_is_active (w))) 4277 if (ecb_expect_false (!ev_is_active (w)))
2573 return; 4278 return;
2574 4279
2575 EV_FREQUENT_CHECK; 4280 EV_FREQUENT_CHECK;
2576 4281
2577 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4282 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2578 ev_stop (EV_A_ (W)w); 4283 ev_stop (EV_A_ (W)w);
2579 4284
2580 EV_FREQUENT_CHECK; 4285 EV_FREQUENT_CHECK;
2581} 4286}
4287
4288#endif
2582 4289
2583#if EV_STAT_ENABLE 4290#if EV_STAT_ENABLE
2584 4291
2585# ifdef _WIN32 4292# ifdef _WIN32
2586# undef lstat 4293# undef lstat
… …
2589 4296
2590#define DEF_STAT_INTERVAL 5.0074891 4297#define DEF_STAT_INTERVAL 5.0074891
2591#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4298#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2592#define MIN_STAT_INTERVAL 0.1074891 4299#define MIN_STAT_INTERVAL 0.1074891
2593 4300
2594static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4301ecb_noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2595 4302
2596#if EV_USE_INOTIFY 4303#if EV_USE_INOTIFY
2597# define EV_INOTIFY_BUFSIZE 8192
2598 4304
2599static void noinline 4305/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
4306# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
4307
4308ecb_noinline
4309static void
2600infy_add (EV_P_ ev_stat *w) 4310infy_add (EV_P_ ev_stat *w)
2601{ 4311{
2602 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); 4312 w->wd = inotify_add_watch (fs_fd, w->path,
4313 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4314 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4315 | IN_DONT_FOLLOW | IN_MASK_ADD);
2603 4316
2604 if (w->wd < 0) 4317 if (w->wd >= 0)
4318 {
4319 struct statfs sfs;
4320
4321 /* now local changes will be tracked by inotify, but remote changes won't */
4322 /* unless the filesystem is known to be local, we therefore still poll */
4323 /* also do poll on <2.6.25, but with normal frequency */
4324
4325 if (!fs_2625)
4326 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
4327 else if (!statfs (w->path, &sfs)
4328 && (sfs.f_type == 0x1373 /* devfs */
4329 || sfs.f_type == 0x4006 /* fat */
4330 || sfs.f_type == 0x4d44 /* msdos */
4331 || sfs.f_type == 0xEF53 /* ext2/3 */
4332 || sfs.f_type == 0x72b6 /* jffs2 */
4333 || sfs.f_type == 0x858458f6 /* ramfs */
4334 || sfs.f_type == 0x5346544e /* ntfs */
4335 || sfs.f_type == 0x3153464a /* jfs */
4336 || sfs.f_type == 0x9123683e /* btrfs */
4337 || sfs.f_type == 0x52654973 /* reiser3 */
4338 || sfs.f_type == 0x01021994 /* tmpfs */
4339 || sfs.f_type == 0x58465342 /* xfs */))
4340 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
4341 else
4342 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2605 { 4343 }
4344 else
4345 {
4346 /* can't use inotify, continue to stat */
2606 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4347 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2607 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2608 4348
2609 /* monitor some parent directory for speedup hints */ 4349 /* if path is not there, monitor some parent directory for speedup hints */
2610 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 4350 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2611 /* but an efficiency issue only */ 4351 /* but an efficiency issue only */
2612 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 4352 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2613 { 4353 {
2614 char path [4096]; 4354 char path [4096];
… …
2624 if (!pend || pend == path) 4364 if (!pend || pend == path)
2625 break; 4365 break;
2626 4366
2627 *pend = 0; 4367 *pend = 0;
2628 w->wd = inotify_add_watch (fs_fd, path, mask); 4368 w->wd = inotify_add_watch (fs_fd, path, mask);
2629 } 4369 }
2630 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 4370 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2631 } 4371 }
2632 } 4372 }
2633 4373
2634 if (w->wd >= 0) 4374 if (w->wd >= 0)
2635 {
2636 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4375 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2637 4376
2638 /* now local changes will be tracked by inotify, but remote changes won't */ 4377 /* now re-arm timer, if required */
2639 /* unless the filesystem it known to be local, we therefore still poll */ 4378 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2640 /* also do poll on <2.6.25, but with normal frequency */
2641 struct statfs sfs;
2642
2643 if (fs_2625 && !statfs (w->path, &sfs))
2644 if (sfs.f_type == 0x1373 /* devfs */
2645 || sfs.f_type == 0xEF53 /* ext2/3 */
2646 || sfs.f_type == 0x3153464a /* jfs */
2647 || sfs.f_type == 0x52654973 /* reiser3 */
2648 || sfs.f_type == 0x01021994 /* tempfs */
2649 || sfs.f_type == 0x58465342 /* xfs */)
2650 return;
2651
2652 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2653 ev_timer_again (EV_A_ &w->timer); 4379 ev_timer_again (EV_A_ &w->timer);
2654 } 4380 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2655} 4381}
2656 4382
2657static void noinline 4383ecb_noinline
4384static void
2658infy_del (EV_P_ ev_stat *w) 4385infy_del (EV_P_ ev_stat *w)
2659{ 4386{
2660 int slot; 4387 int slot;
2661 int wd = w->wd; 4388 int wd = w->wd;
2662 4389
2663 if (wd < 0) 4390 if (wd < 0)
2664 return; 4391 return;
2665 4392
2666 w->wd = -2; 4393 w->wd = -2;
2667 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 4394 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2668 wlist_del (&fs_hash [slot].head, (WL)w); 4395 wlist_del (&fs_hash [slot].head, (WL)w);
2669 4396
2670 /* remove this watcher, if others are watching it, they will rearm */ 4397 /* remove this watcher, if others are watching it, they will rearm */
2671 inotify_rm_watch (fs_fd, wd); 4398 inotify_rm_watch (fs_fd, wd);
2672} 4399}
2673 4400
2674static void noinline 4401ecb_noinline
4402static void
2675infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4403infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2676{ 4404{
2677 if (slot < 0) 4405 if (slot < 0)
2678 /* overflow, need to check for all hash slots */ 4406 /* overflow, need to check for all hash slots */
2679 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4407 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2680 infy_wd (EV_A_ slot, wd, ev); 4408 infy_wd (EV_A_ slot, wd, ev);
2681 else 4409 else
2682 { 4410 {
2683 WL w_; 4411 WL w_;
2684 4412
2685 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 4413 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2686 { 4414 {
2687 ev_stat *w = (ev_stat *)w_; 4415 ev_stat *w = (ev_stat *)w_;
2688 w_ = w_->next; /* lets us remove this watcher and all before it */ 4416 w_ = w_->next; /* lets us remove this watcher and all before it */
2689 4417
2690 if (w->wd == wd || wd == -1) 4418 if (w->wd == wd || wd == -1)
2691 { 4419 {
2692 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 4420 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2693 { 4421 {
2694 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4422 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2695 w->wd = -1; 4423 w->wd = -1;
2696 infy_add (EV_A_ w); /* re-add, no matter what */ 4424 infy_add (EV_A_ w); /* re-add, no matter what */
2697 } 4425 }
2698 4426
2699 stat_timer_cb (EV_A_ &w->timer, 0); 4427 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2704 4432
2705static void 4433static void
2706infy_cb (EV_P_ ev_io *w, int revents) 4434infy_cb (EV_P_ ev_io *w, int revents)
2707{ 4435{
2708 char buf [EV_INOTIFY_BUFSIZE]; 4436 char buf [EV_INOTIFY_BUFSIZE];
2709 struct inotify_event *ev = (struct inotify_event *)buf;
2710 int ofs; 4437 int ofs;
2711 int len = read (fs_fd, buf, sizeof (buf)); 4438 int len = read (fs_fd, buf, sizeof (buf));
2712 4439
2713 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 4440 for (ofs = 0; ofs < len; )
4441 {
4442 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2714 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4443 infy_wd (EV_A_ ev->wd, ev->wd, ev);
4444 ofs += sizeof (struct inotify_event) + ev->len;
4445 }
2715} 4446}
2716 4447
2717inline_size void 4448inline_size ecb_cold
4449void
2718check_2625 (EV_P) 4450ev_check_2625 (EV_P)
2719{ 4451{
2720 /* kernels < 2.6.25 are borked 4452 /* kernels < 2.6.25 are borked
2721 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4453 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2722 */ 4454 */
2723 struct utsname buf; 4455 if (ev_linux_version () < 0x020619)
2724 int major, minor, micro;
2725
2726 if (uname (&buf))
2727 return; 4456 return;
2728 4457
2729 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2730 return;
2731
2732 if (major < 2
2733 || (major == 2 && minor < 6)
2734 || (major == 2 && minor == 6 && micro < 25))
2735 return;
2736
2737 fs_2625 = 1; 4458 fs_2625 = 1;
4459}
4460
4461inline_size int
4462infy_newfd (void)
4463{
4464#if defined IN_CLOEXEC && defined IN_NONBLOCK
4465 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
4466 if (fd >= 0)
4467 return fd;
4468#endif
4469 return inotify_init ();
2738} 4470}
2739 4471
2740inline_size void 4472inline_size void
2741infy_init (EV_P) 4473infy_init (EV_P)
2742{ 4474{
2743 if (fs_fd != -2) 4475 if (fs_fd != -2)
2744 return; 4476 return;
2745 4477
2746 fs_fd = -1; 4478 fs_fd = -1;
2747 4479
2748 check_2625 (EV_A); 4480 ev_check_2625 (EV_A);
2749 4481
2750 fs_fd = inotify_init (); 4482 fs_fd = infy_newfd ();
2751 4483
2752 if (fs_fd >= 0) 4484 if (fs_fd >= 0)
2753 { 4485 {
4486 fd_intern (fs_fd);
2754 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 4487 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2755 ev_set_priority (&fs_w, EV_MAXPRI); 4488 ev_set_priority (&fs_w, EV_MAXPRI);
2756 ev_io_start (EV_A_ &fs_w); 4489 ev_io_start (EV_A_ &fs_w);
4490 ev_unref (EV_A);
2757 } 4491 }
2758} 4492}
2759 4493
2760inline_size void 4494inline_size void
2761infy_fork (EV_P) 4495infy_fork (EV_P)
… …
2763 int slot; 4497 int slot;
2764 4498
2765 if (fs_fd < 0) 4499 if (fs_fd < 0)
2766 return; 4500 return;
2767 4501
4502 ev_ref (EV_A);
4503 ev_io_stop (EV_A_ &fs_w);
2768 close (fs_fd); 4504 close (fs_fd);
2769 fs_fd = inotify_init (); 4505 fs_fd = infy_newfd ();
2770 4506
4507 if (fs_fd >= 0)
4508 {
4509 fd_intern (fs_fd);
4510 ev_io_set (&fs_w, fs_fd, EV_READ);
4511 ev_io_start (EV_A_ &fs_w);
4512 ev_unref (EV_A);
4513 }
4514
2771 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4515 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2772 { 4516 {
2773 WL w_ = fs_hash [slot].head; 4517 WL w_ = fs_hash [slot].head;
2774 fs_hash [slot].head = 0; 4518 fs_hash [slot].head = 0;
2775 4519
2776 while (w_) 4520 while (w_)
… …
2781 w->wd = -1; 4525 w->wd = -1;
2782 4526
2783 if (fs_fd >= 0) 4527 if (fs_fd >= 0)
2784 infy_add (EV_A_ w); /* re-add, no matter what */ 4528 infy_add (EV_A_ w); /* re-add, no matter what */
2785 else 4529 else
4530 {
4531 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
4532 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2786 ev_timer_again (EV_A_ &w->timer); 4533 ev_timer_again (EV_A_ &w->timer);
4534 if (ev_is_active (&w->timer)) ev_unref (EV_A);
4535 }
2787 } 4536 }
2788 } 4537 }
2789} 4538}
2790 4539
2791#endif 4540#endif
… …
2795#else 4544#else
2796# define EV_LSTAT(p,b) lstat (p, b) 4545# define EV_LSTAT(p,b) lstat (p, b)
2797#endif 4546#endif
2798 4547
2799void 4548void
2800ev_stat_stat (EV_P_ ev_stat *w) 4549ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
2801{ 4550{
2802 if (lstat (w->path, &w->attr) < 0) 4551 if (lstat (w->path, &w->attr) < 0)
2803 w->attr.st_nlink = 0; 4552 w->attr.st_nlink = 0;
2804 else if (!w->attr.st_nlink) 4553 else if (!w->attr.st_nlink)
2805 w->attr.st_nlink = 1; 4554 w->attr.st_nlink = 1;
2806} 4555}
2807 4556
2808static void noinline 4557ecb_noinline
4558static void
2809stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4559stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2810{ 4560{
2811 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4561 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2812 4562
2813 /* we copy this here each the time so that */ 4563 ev_statdata prev = w->attr;
2814 /* prev has the old value when the callback gets invoked */
2815 w->prev = w->attr;
2816 ev_stat_stat (EV_A_ w); 4564 ev_stat_stat (EV_A_ w);
2817 4565
2818 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 4566 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2819 if ( 4567 if (
2820 w->prev.st_dev != w->attr.st_dev 4568 prev.st_dev != w->attr.st_dev
2821 || w->prev.st_ino != w->attr.st_ino 4569 || prev.st_ino != w->attr.st_ino
2822 || w->prev.st_mode != w->attr.st_mode 4570 || prev.st_mode != w->attr.st_mode
2823 || w->prev.st_nlink != w->attr.st_nlink 4571 || prev.st_nlink != w->attr.st_nlink
2824 || w->prev.st_uid != w->attr.st_uid 4572 || prev.st_uid != w->attr.st_uid
2825 || w->prev.st_gid != w->attr.st_gid 4573 || prev.st_gid != w->attr.st_gid
2826 || w->prev.st_rdev != w->attr.st_rdev 4574 || prev.st_rdev != w->attr.st_rdev
2827 || w->prev.st_size != w->attr.st_size 4575 || prev.st_size != w->attr.st_size
2828 || w->prev.st_atime != w->attr.st_atime 4576 || prev.st_atime != w->attr.st_atime
2829 || w->prev.st_mtime != w->attr.st_mtime 4577 || prev.st_mtime != w->attr.st_mtime
2830 || w->prev.st_ctime != w->attr.st_ctime 4578 || prev.st_ctime != w->attr.st_ctime
2831 ) { 4579 ) {
4580 /* we only update w->prev on actual differences */
4581 /* in case we test more often than invoke the callback, */
4582 /* to ensure that prev is always different to attr */
4583 w->prev = prev;
4584
2832 #if EV_USE_INOTIFY 4585 #if EV_USE_INOTIFY
2833 if (fs_fd >= 0) 4586 if (fs_fd >= 0)
2834 { 4587 {
2835 infy_del (EV_A_ w); 4588 infy_del (EV_A_ w);
2836 infy_add (EV_A_ w); 4589 infy_add (EV_A_ w);
… …
2841 ev_feed_event (EV_A_ w, EV_STAT); 4594 ev_feed_event (EV_A_ w, EV_STAT);
2842 } 4595 }
2843} 4596}
2844 4597
2845void 4598void
2846ev_stat_start (EV_P_ ev_stat *w) 4599ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
2847{ 4600{
2848 if (expect_false (ev_is_active (w))) 4601 if (ecb_expect_false (ev_is_active (w)))
2849 return; 4602 return;
2850 4603
2851 ev_stat_stat (EV_A_ w); 4604 ev_stat_stat (EV_A_ w);
2852 4605
2853 if (w->interval < MIN_STAT_INTERVAL && w->interval) 4606 if (w->interval < MIN_STAT_INTERVAL && w->interval)
… …
2861 4614
2862 if (fs_fd >= 0) 4615 if (fs_fd >= 0)
2863 infy_add (EV_A_ w); 4616 infy_add (EV_A_ w);
2864 else 4617 else
2865#endif 4618#endif
4619 {
2866 ev_timer_again (EV_A_ &w->timer); 4620 ev_timer_again (EV_A_ &w->timer);
4621 ev_unref (EV_A);
4622 }
2867 4623
2868 ev_start (EV_A_ (W)w, 1); 4624 ev_start (EV_A_ (W)w, 1);
2869 4625
2870 EV_FREQUENT_CHECK; 4626 EV_FREQUENT_CHECK;
2871} 4627}
2872 4628
2873void 4629void
2874ev_stat_stop (EV_P_ ev_stat *w) 4630ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
2875{ 4631{
2876 clear_pending (EV_A_ (W)w); 4632 clear_pending (EV_A_ (W)w);
2877 if (expect_false (!ev_is_active (w))) 4633 if (ecb_expect_false (!ev_is_active (w)))
2878 return; 4634 return;
2879 4635
2880 EV_FREQUENT_CHECK; 4636 EV_FREQUENT_CHECK;
2881 4637
2882#if EV_USE_INOTIFY 4638#if EV_USE_INOTIFY
2883 infy_del (EV_A_ w); 4639 infy_del (EV_A_ w);
2884#endif 4640#endif
4641
4642 if (ev_is_active (&w->timer))
4643 {
4644 ev_ref (EV_A);
2885 ev_timer_stop (EV_A_ &w->timer); 4645 ev_timer_stop (EV_A_ &w->timer);
4646 }
2886 4647
2887 ev_stop (EV_A_ (W)w); 4648 ev_stop (EV_A_ (W)w);
2888 4649
2889 EV_FREQUENT_CHECK; 4650 EV_FREQUENT_CHECK;
2890} 4651}
2891#endif 4652#endif
2892 4653
2893#if EV_IDLE_ENABLE 4654#if EV_IDLE_ENABLE
2894void 4655void
2895ev_idle_start (EV_P_ ev_idle *w) 4656ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
2896{ 4657{
2897 if (expect_false (ev_is_active (w))) 4658 if (ecb_expect_false (ev_is_active (w)))
2898 return; 4659 return;
2899 4660
2900 pri_adjust (EV_A_ (W)w); 4661 pri_adjust (EV_A_ (W)w);
2901 4662
2902 EV_FREQUENT_CHECK; 4663 EV_FREQUENT_CHECK;
… …
2905 int active = ++idlecnt [ABSPRI (w)]; 4666 int active = ++idlecnt [ABSPRI (w)];
2906 4667
2907 ++idleall; 4668 ++idleall;
2908 ev_start (EV_A_ (W)w, active); 4669 ev_start (EV_A_ (W)w, active);
2909 4670
2910 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 4671 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
2911 idles [ABSPRI (w)][active - 1] = w; 4672 idles [ABSPRI (w)][active - 1] = w;
2912 } 4673 }
2913 4674
2914 EV_FREQUENT_CHECK; 4675 EV_FREQUENT_CHECK;
2915} 4676}
2916 4677
2917void 4678void
2918ev_idle_stop (EV_P_ ev_idle *w) 4679ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
2919{ 4680{
2920 clear_pending (EV_A_ (W)w); 4681 clear_pending (EV_A_ (W)w);
2921 if (expect_false (!ev_is_active (w))) 4682 if (ecb_expect_false (!ev_is_active (w)))
2922 return; 4683 return;
2923 4684
2924 EV_FREQUENT_CHECK; 4685 EV_FREQUENT_CHECK;
2925 4686
2926 { 4687 {
… …
2935 4696
2936 EV_FREQUENT_CHECK; 4697 EV_FREQUENT_CHECK;
2937} 4698}
2938#endif 4699#endif
2939 4700
4701#if EV_PREPARE_ENABLE
2940void 4702void
2941ev_prepare_start (EV_P_ ev_prepare *w) 4703ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
2942{ 4704{
2943 if (expect_false (ev_is_active (w))) 4705 if (ecb_expect_false (ev_is_active (w)))
2944 return; 4706 return;
2945 4707
2946 EV_FREQUENT_CHECK; 4708 EV_FREQUENT_CHECK;
2947 4709
2948 ev_start (EV_A_ (W)w, ++preparecnt); 4710 ev_start (EV_A_ (W)w, ++preparecnt);
2949 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4711 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
2950 prepares [preparecnt - 1] = w; 4712 prepares [preparecnt - 1] = w;
2951 4713
2952 EV_FREQUENT_CHECK; 4714 EV_FREQUENT_CHECK;
2953} 4715}
2954 4716
2955void 4717void
2956ev_prepare_stop (EV_P_ ev_prepare *w) 4718ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
2957{ 4719{
2958 clear_pending (EV_A_ (W)w); 4720 clear_pending (EV_A_ (W)w);
2959 if (expect_false (!ev_is_active (w))) 4721 if (ecb_expect_false (!ev_is_active (w)))
2960 return; 4722 return;
2961 4723
2962 EV_FREQUENT_CHECK; 4724 EV_FREQUENT_CHECK;
2963 4725
2964 { 4726 {
… …
2970 4732
2971 ev_stop (EV_A_ (W)w); 4733 ev_stop (EV_A_ (W)w);
2972 4734
2973 EV_FREQUENT_CHECK; 4735 EV_FREQUENT_CHECK;
2974} 4736}
4737#endif
2975 4738
4739#if EV_CHECK_ENABLE
2976void 4740void
2977ev_check_start (EV_P_ ev_check *w) 4741ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
2978{ 4742{
2979 if (expect_false (ev_is_active (w))) 4743 if (ecb_expect_false (ev_is_active (w)))
2980 return; 4744 return;
2981 4745
2982 EV_FREQUENT_CHECK; 4746 EV_FREQUENT_CHECK;
2983 4747
2984 ev_start (EV_A_ (W)w, ++checkcnt); 4748 ev_start (EV_A_ (W)w, ++checkcnt);
2985 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 4749 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
2986 checks [checkcnt - 1] = w; 4750 checks [checkcnt - 1] = w;
2987 4751
2988 EV_FREQUENT_CHECK; 4752 EV_FREQUENT_CHECK;
2989} 4753}
2990 4754
2991void 4755void
2992ev_check_stop (EV_P_ ev_check *w) 4756ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
2993{ 4757{
2994 clear_pending (EV_A_ (W)w); 4758 clear_pending (EV_A_ (W)w);
2995 if (expect_false (!ev_is_active (w))) 4759 if (ecb_expect_false (!ev_is_active (w)))
2996 return; 4760 return;
2997 4761
2998 EV_FREQUENT_CHECK; 4762 EV_FREQUENT_CHECK;
2999 4763
3000 { 4764 {
… …
3006 4770
3007 ev_stop (EV_A_ (W)w); 4771 ev_stop (EV_A_ (W)w);
3008 4772
3009 EV_FREQUENT_CHECK; 4773 EV_FREQUENT_CHECK;
3010} 4774}
4775#endif
3011 4776
3012#if EV_EMBED_ENABLE 4777#if EV_EMBED_ENABLE
3013void noinline 4778ecb_noinline
4779void
3014ev_embed_sweep (EV_P_ ev_embed *w) 4780ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
3015{ 4781{
3016 ev_loop (w->other, EVLOOP_NONBLOCK); 4782 ev_run (w->other, EVRUN_NOWAIT);
3017} 4783}
3018 4784
3019static void 4785static void
3020embed_io_cb (EV_P_ ev_io *io, int revents) 4786embed_io_cb (EV_P_ ev_io *io, int revents)
3021{ 4787{
3022 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4788 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3023 4789
3024 if (ev_cb (w)) 4790 if (ev_cb (w))
3025 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4791 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3026 else 4792 else
3027 ev_loop (w->other, EVLOOP_NONBLOCK); 4793 ev_run (w->other, EVRUN_NOWAIT);
3028} 4794}
3029 4795
3030static void 4796static void
3031embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4797embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3032{ 4798{
3033 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 4799 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
3034 4800
3035 { 4801 {
3036 struct ev_loop *loop = w->other; 4802 EV_P = w->other;
3037 4803
3038 while (fdchangecnt) 4804 while (fdchangecnt)
3039 { 4805 {
3040 fd_reify (EV_A); 4806 fd_reify (EV_A);
3041 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4807 ev_run (EV_A_ EVRUN_NOWAIT);
3042 } 4808 }
3043 } 4809 }
3044} 4810}
3045 4811
3046static void 4812static void
… …
3049 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 4815 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3050 4816
3051 ev_embed_stop (EV_A_ w); 4817 ev_embed_stop (EV_A_ w);
3052 4818
3053 { 4819 {
3054 struct ev_loop *loop = w->other; 4820 EV_P = w->other;
3055 4821
3056 ev_loop_fork (EV_A); 4822 ev_loop_fork (EV_A);
3057 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4823 ev_run (EV_A_ EVRUN_NOWAIT);
3058 } 4824 }
3059 4825
3060 ev_embed_start (EV_A_ w); 4826 ev_embed_start (EV_A_ w);
3061} 4827}
3062 4828
… …
3067 ev_idle_stop (EV_A_ idle); 4833 ev_idle_stop (EV_A_ idle);
3068} 4834}
3069#endif 4835#endif
3070 4836
3071void 4837void
3072ev_embed_start (EV_P_ ev_embed *w) 4838ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
3073{ 4839{
3074 if (expect_false (ev_is_active (w))) 4840 if (ecb_expect_false (ev_is_active (w)))
3075 return; 4841 return;
3076 4842
3077 { 4843 {
3078 struct ev_loop *loop = w->other; 4844 EV_P = w->other;
3079 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4845 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
3080 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 4846 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3081 } 4847 }
3082 4848
3083 EV_FREQUENT_CHECK; 4849 EV_FREQUENT_CHECK;
… …
3098 4864
3099 EV_FREQUENT_CHECK; 4865 EV_FREQUENT_CHECK;
3100} 4866}
3101 4867
3102void 4868void
3103ev_embed_stop (EV_P_ ev_embed *w) 4869ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
3104{ 4870{
3105 clear_pending (EV_A_ (W)w); 4871 clear_pending (EV_A_ (W)w);
3106 if (expect_false (!ev_is_active (w))) 4872 if (ecb_expect_false (!ev_is_active (w)))
3107 return; 4873 return;
3108 4874
3109 EV_FREQUENT_CHECK; 4875 EV_FREQUENT_CHECK;
3110 4876
3111 ev_io_stop (EV_A_ &w->io); 4877 ev_io_stop (EV_A_ &w->io);
3112 ev_prepare_stop (EV_A_ &w->prepare); 4878 ev_prepare_stop (EV_A_ &w->prepare);
3113 ev_fork_stop (EV_A_ &w->fork); 4879 ev_fork_stop (EV_A_ &w->fork);
3114 4880
4881 ev_stop (EV_A_ (W)w);
4882
3115 EV_FREQUENT_CHECK; 4883 EV_FREQUENT_CHECK;
3116} 4884}
3117#endif 4885#endif
3118 4886
3119#if EV_FORK_ENABLE 4887#if EV_FORK_ENABLE
3120void 4888void
3121ev_fork_start (EV_P_ ev_fork *w) 4889ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
3122{ 4890{
3123 if (expect_false (ev_is_active (w))) 4891 if (ecb_expect_false (ev_is_active (w)))
3124 return; 4892 return;
3125 4893
3126 EV_FREQUENT_CHECK; 4894 EV_FREQUENT_CHECK;
3127 4895
3128 ev_start (EV_A_ (W)w, ++forkcnt); 4896 ev_start (EV_A_ (W)w, ++forkcnt);
3129 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 4897 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
3130 forks [forkcnt - 1] = w; 4898 forks [forkcnt - 1] = w;
3131 4899
3132 EV_FREQUENT_CHECK; 4900 EV_FREQUENT_CHECK;
3133} 4901}
3134 4902
3135void 4903void
3136ev_fork_stop (EV_P_ ev_fork *w) 4904ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
3137{ 4905{
3138 clear_pending (EV_A_ (W)w); 4906 clear_pending (EV_A_ (W)w);
3139 if (expect_false (!ev_is_active (w))) 4907 if (ecb_expect_false (!ev_is_active (w)))
3140 return; 4908 return;
3141 4909
3142 EV_FREQUENT_CHECK; 4910 EV_FREQUENT_CHECK;
3143 4911
3144 { 4912 {
… …
3152 4920
3153 EV_FREQUENT_CHECK; 4921 EV_FREQUENT_CHECK;
3154} 4922}
3155#endif 4923#endif
3156 4924
4925#if EV_CLEANUP_ENABLE
4926void
4927ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4928{
4929 if (ecb_expect_false (ev_is_active (w)))
4930 return;
4931
4932 EV_FREQUENT_CHECK;
4933
4934 ev_start (EV_A_ (W)w, ++cleanupcnt);
4935 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
4936 cleanups [cleanupcnt - 1] = w;
4937
4938 /* cleanup watchers should never keep a refcount on the loop */
4939 ev_unref (EV_A);
4940 EV_FREQUENT_CHECK;
4941}
4942
4943void
4944ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4945{
4946 clear_pending (EV_A_ (W)w);
4947 if (ecb_expect_false (!ev_is_active (w)))
4948 return;
4949
4950 EV_FREQUENT_CHECK;
4951 ev_ref (EV_A);
4952
4953 {
4954 int active = ev_active (w);
4955
4956 cleanups [active - 1] = cleanups [--cleanupcnt];
4957 ev_active (cleanups [active - 1]) = active;
4958 }
4959
4960 ev_stop (EV_A_ (W)w);
4961
4962 EV_FREQUENT_CHECK;
4963}
4964#endif
4965
3157#if EV_ASYNC_ENABLE 4966#if EV_ASYNC_ENABLE
3158void 4967void
3159ev_async_start (EV_P_ ev_async *w) 4968ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
3160{ 4969{
3161 if (expect_false (ev_is_active (w))) 4970 if (ecb_expect_false (ev_is_active (w)))
3162 return; 4971 return;
3163 4972
4973 w->sent = 0;
4974
3164 evpipe_init (EV_A); 4975 evpipe_init (EV_A);
3165 4976
3166 EV_FREQUENT_CHECK; 4977 EV_FREQUENT_CHECK;
3167 4978
3168 ev_start (EV_A_ (W)w, ++asynccnt); 4979 ev_start (EV_A_ (W)w, ++asynccnt);
3169 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 4980 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
3170 asyncs [asynccnt - 1] = w; 4981 asyncs [asynccnt - 1] = w;
3171 4982
3172 EV_FREQUENT_CHECK; 4983 EV_FREQUENT_CHECK;
3173} 4984}
3174 4985
3175void 4986void
3176ev_async_stop (EV_P_ ev_async *w) 4987ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
3177{ 4988{
3178 clear_pending (EV_A_ (W)w); 4989 clear_pending (EV_A_ (W)w);
3179 if (expect_false (!ev_is_active (w))) 4990 if (ecb_expect_false (!ev_is_active (w)))
3180 return; 4991 return;
3181 4992
3182 EV_FREQUENT_CHECK; 4993 EV_FREQUENT_CHECK;
3183 4994
3184 { 4995 {
… …
3192 5003
3193 EV_FREQUENT_CHECK; 5004 EV_FREQUENT_CHECK;
3194} 5005}
3195 5006
3196void 5007void
3197ev_async_send (EV_P_ ev_async *w) 5008ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
3198{ 5009{
3199 w->sent = 1; 5010 w->sent = 1;
3200 evpipe_write (EV_A_ &gotasync); 5011 evpipe_write (EV_A_ &async_pending);
3201} 5012}
3202#endif 5013#endif
3203 5014
3204/*****************************************************************************/ 5015/*****************************************************************************/
3205 5016
… …
3239 5050
3240 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5051 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3241} 5052}
3242 5053
3243void 5054void
3244ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 5055ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
3245{ 5056{
3246 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5057 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3247
3248 if (expect_false (!once))
3249 {
3250 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
3251 return;
3252 }
3253 5058
3254 once->cb = cb; 5059 once->cb = cb;
3255 once->arg = arg; 5060 once->arg = arg;
3256 5061
3257 ev_init (&once->io, once_cb_io); 5062 ev_init (&once->io, once_cb_io);
… …
3270} 5075}
3271 5076
3272/*****************************************************************************/ 5077/*****************************************************************************/
3273 5078
3274#if EV_WALK_ENABLE 5079#if EV_WALK_ENABLE
5080ecb_cold
3275void 5081void
3276ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 5082ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
3277{ 5083{
3278 int i, j; 5084 int i, j;
3279 ev_watcher_list *wl, *wn; 5085 ev_watcher_list *wl, *wn;
3280 5086
3281 if (types & (EV_IO | EV_EMBED)) 5087 if (types & (EV_IO | EV_EMBED))
… …
3324 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 5130 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3325#endif 5131#endif
3326 5132
3327#if EV_IDLE_ENABLE 5133#if EV_IDLE_ENABLE
3328 if (types & EV_IDLE) 5134 if (types & EV_IDLE)
3329 for (j = NUMPRI; i--; ) 5135 for (j = NUMPRI; j--; )
3330 for (i = idlecnt [j]; i--; ) 5136 for (i = idlecnt [j]; i--; )
3331 cb (EV_A_ EV_IDLE, idles [j][i]); 5137 cb (EV_A_ EV_IDLE, idles [j][i]);
3332#endif 5138#endif
3333 5139
3334#if EV_FORK_ENABLE 5140#if EV_FORK_ENABLE
… …
3342 if (types & EV_ASYNC) 5148 if (types & EV_ASYNC)
3343 for (i = asynccnt; i--; ) 5149 for (i = asynccnt; i--; )
3344 cb (EV_A_ EV_ASYNC, asyncs [i]); 5150 cb (EV_A_ EV_ASYNC, asyncs [i]);
3345#endif 5151#endif
3346 5152
5153#if EV_PREPARE_ENABLE
3347 if (types & EV_PREPARE) 5154 if (types & EV_PREPARE)
3348 for (i = preparecnt; i--; ) 5155 for (i = preparecnt; i--; )
3349#if EV_EMBED_ENABLE 5156# if EV_EMBED_ENABLE
3350 if (ev_cb (prepares [i]) != embed_prepare_cb) 5157 if (ev_cb (prepares [i]) != embed_prepare_cb)
3351#endif 5158# endif
3352 cb (EV_A_ EV_PREPARE, prepares [i]); 5159 cb (EV_A_ EV_PREPARE, prepares [i]);
5160#endif
3353 5161
5162#if EV_CHECK_ENABLE
3354 if (types & EV_CHECK) 5163 if (types & EV_CHECK)
3355 for (i = checkcnt; i--; ) 5164 for (i = checkcnt; i--; )
3356 cb (EV_A_ EV_CHECK, checks [i]); 5165 cb (EV_A_ EV_CHECK, checks [i]);
5166#endif
3357 5167
5168#if EV_SIGNAL_ENABLE
3358 if (types & EV_SIGNAL) 5169 if (types & EV_SIGNAL)
3359 for (i = 0; i < signalmax; ++i) 5170 for (i = 0; i < EV_NSIG - 1; ++i)
3360 for (wl = signals [i].head; wl; ) 5171 for (wl = signals [i].head; wl; )
3361 { 5172 {
3362 wn = wl->next; 5173 wn = wl->next;
3363 cb (EV_A_ EV_SIGNAL, wl); 5174 cb (EV_A_ EV_SIGNAL, wl);
3364 wl = wn; 5175 wl = wn;
3365 } 5176 }
5177#endif
3366 5178
5179#if EV_CHILD_ENABLE
3367 if (types & EV_CHILD) 5180 if (types & EV_CHILD)
3368 for (i = EV_PID_HASHSIZE; i--; ) 5181 for (i = (EV_PID_HASHSIZE); i--; )
3369 for (wl = childs [i]; wl; ) 5182 for (wl = childs [i]; wl; )
3370 { 5183 {
3371 wn = wl->next; 5184 wn = wl->next;
3372 cb (EV_A_ EV_CHILD, wl); 5185 cb (EV_A_ EV_CHILD, wl);
3373 wl = wn; 5186 wl = wn;
3374 } 5187 }
5188#endif
3375/* EV_STAT 0x00001000 /* stat data changed */ 5189/* EV_STAT 0x00001000 /* stat data changed */
3376/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 5190/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3377} 5191}
3378#endif 5192#endif
3379 5193
3380#if EV_MULTIPLICITY 5194#if EV_MULTIPLICITY
3381 #include "ev_wrap.h" 5195 #include "ev_wrap.h"
3382#endif 5196#endif
3383 5197
3384#ifdef __cplusplus
3385}
3386#endif
3387

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