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Comparing libev/ev.c (file contents):
Revision 1.299 by root, Tue Jul 14 00:09:59 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}
… …
499typedef struct 1796typedef struct
500{ 1797{
501 WL head; 1798 WL head;
502 unsigned char events; /* the events watched for */ 1799 unsigned char events; /* the events watched for */
503 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */ 1800 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
504 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1801 unsigned char emask; /* some backends store the actual kernel mask in here */
505 unsigned char unused; 1802 unsigned char unused;
506#if EV_USE_EPOLL 1803#if EV_USE_EPOLL
507 unsigned int egen; /* generation counter to counter epoll bugs */ 1804 unsigned int egen; /* generation counter to counter epoll bugs */
508#endif 1805#endif
509#if EV_SELECT_IS_WINSOCKET 1806#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
510 SOCKET handle; 1807 SOCKET handle;
1808#endif
1809#if EV_USE_IOCP
1810 OVERLAPPED or, ow;
511#endif 1811#endif
512} ANFD; 1812} ANFD;
513 1813
514/* stores the pending event set for a given watcher */ 1814/* stores the pending event set for a given watcher */
515typedef struct 1815typedef struct
… …
557 #undef VAR 1857 #undef VAR
558 }; 1858 };
559 #include "ev_wrap.h" 1859 #include "ev_wrap.h"
560 1860
561 static struct ev_loop default_loop_struct; 1861 static struct ev_loop default_loop_struct;
562 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 */
563 1863
564#else 1864#else
565 1865
566 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 */
567 #define VAR(name,decl) static decl; 1867 #define VAR(name,decl) static decl;
568 #include "ev_vars.h" 1868 #include "ev_vars.h"
569 #undef VAR 1869 #undef VAR
570 1870
571 static int ev_default_loop_ptr; 1871 static int ev_default_loop_ptr;
572 1872
573#endif 1873#endif
574 1874
575#if EV_MINIMAL < 2 1875#if EV_FEATURE_API
576# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 1876# define EV_RELEASE_CB if (ecb_expect_false (release_cb)) release_cb (EV_A)
577# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 1877# define EV_ACQUIRE_CB if (ecb_expect_false (acquire_cb)) acquire_cb (EV_A)
578# define EV_INVOKE_PENDING invoke_cb (EV_A) 1878# define EV_INVOKE_PENDING invoke_cb (EV_A)
579#else 1879#else
580# define EV_RELEASE_CB (void)0 1880# define EV_RELEASE_CB (void)0
581# define EV_ACQUIRE_CB (void)0 1881# define EV_ACQUIRE_CB (void)0
582# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1882# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
583#endif 1883#endif
584 1884
585#define EVUNLOOP_RECURSE 0x80 1885#define EVBREAK_RECURSE 0x80
586 1886
587/*****************************************************************************/ 1887/*****************************************************************************/
588 1888
589#ifndef EV_HAVE_EV_TIME 1889#ifndef EV_HAVE_EV_TIME
590ev_tstamp 1890ev_tstamp
591ev_time (void) 1891ev_time (void) EV_NOEXCEPT
592{ 1892{
593#if EV_USE_REALTIME 1893#if EV_USE_REALTIME
594 if (expect_true (have_realtime)) 1894 if (ecb_expect_true (have_realtime))
595 { 1895 {
596 struct timespec ts; 1896 struct timespec ts;
597 clock_gettime (CLOCK_REALTIME, &ts); 1897 clock_gettime (CLOCK_REALTIME, &ts);
598 return ts.tv_sec + ts.tv_nsec * 1e-9; 1898 return ts.tv_sec + ts.tv_nsec * 1e-9;
599 } 1899 }
… …
607 1907
608inline_size ev_tstamp 1908inline_size ev_tstamp
609get_clock (void) 1909get_clock (void)
610{ 1910{
611#if EV_USE_MONOTONIC 1911#if EV_USE_MONOTONIC
612 if (expect_true (have_monotonic)) 1912 if (ecb_expect_true (have_monotonic))
613 { 1913 {
614 struct timespec ts; 1914 struct timespec ts;
615 clock_gettime (CLOCK_MONOTONIC, &ts); 1915 clock_gettime (CLOCK_MONOTONIC, &ts);
616 return ts.tv_sec + ts.tv_nsec * 1e-9; 1916 return ts.tv_sec + ts.tv_nsec * 1e-9;
617 } 1917 }
… …
620 return ev_time (); 1920 return ev_time ();
621} 1921}
622 1922
623#if EV_MULTIPLICITY 1923#if EV_MULTIPLICITY
624ev_tstamp 1924ev_tstamp
625ev_now (EV_P) 1925ev_now (EV_P) EV_NOEXCEPT
626{ 1926{
627 return ev_rt_now; 1927 return ev_rt_now;
628} 1928}
629#endif 1929#endif
630 1930
631void 1931void
632ev_sleep (ev_tstamp delay) 1932ev_sleep (ev_tstamp delay) EV_NOEXCEPT
633{ 1933{
634 if (delay > 0.) 1934 if (delay > 0.)
635 { 1935 {
636#if EV_USE_NANOSLEEP 1936#if EV_USE_NANOSLEEP
637 struct timespec ts; 1937 struct timespec ts;
638 1938
639 ts.tv_sec = (time_t)delay; 1939 EV_TS_SET (ts, delay);
640 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
641
642 nanosleep (&ts, 0); 1940 nanosleep (&ts, 0);
643#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) */
644 Sleep ((unsigned long)(delay * 1e3)); 1944 Sleep ((unsigned long)(delay * 1e3));
645#else 1945#else
646 struct timeval tv; 1946 struct timeval tv;
647 1947
648 tv.tv_sec = (time_t)delay;
649 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
650
651 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1948 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
652 /* somehting not guaranteed by newer posix versions, but guaranteed */ 1949 /* something not guaranteed by newer posix versions, but guaranteed */
653 /* by older ones */ 1950 /* by older ones */
1951 EV_TV_SET (tv, delay);
654 select (0, 0, 0, 0, &tv); 1952 select (0, 0, 0, 0, &tv);
655#endif 1953#endif
656 } 1954 }
657} 1955}
658 1956
659/*****************************************************************************/ 1957/*****************************************************************************/
660 1958
661#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 */
662 1960
663/* find a suitable new size for the given array, */ 1961/* find a suitable new size for the given array, */
664/* hopefully by rounding to a ncie-to-malloc size */ 1962/* hopefully by rounding to a nice-to-malloc size */
665inline_size int 1963inline_size int
666array_nextsize (int elem, int cur, int cnt) 1964array_nextsize (int elem, int cur, int cnt)
667{ 1965{
668 int ncur = cur + 1; 1966 int ncur = cur + 1;
669 1967
670 do 1968 do
671 ncur <<= 1; 1969 ncur <<= 1;
672 while (cnt > ncur); 1970 while (cnt > ncur);
673 1971
674 /* 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 */
675 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1973 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
676 { 1974 {
677 ncur *= elem; 1975 ncur *= elem;
678 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);
679 ncur = ncur - sizeof (void *) * 4; 1977 ncur = ncur - sizeof (void *) * 4;
… …
681 } 1979 }
682 1980
683 return ncur; 1981 return ncur;
684} 1982}
685 1983
686static noinline void * 1984ecb_noinline ecb_cold
1985static void *
687array_realloc (int elem, void *base, int *cur, int cnt) 1986array_realloc (int elem, void *base, int *cur, int cnt)
688{ 1987{
689 *cur = array_nextsize (elem, *cur, cnt); 1988 *cur = array_nextsize (elem, *cur, cnt);
690 return ev_realloc (base, elem * *cur); 1989 return ev_realloc (base, elem * *cur);
691} 1990}
692 1991
1992#define array_needsize_noinit(base,offset,count)
1993
693#define array_init_zero(base,count) \ 1994#define array_needsize_zerofill(base,offset,count) \
694 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1995 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
695 1996
696#define array_needsize(type,base,cur,cnt,init) \ 1997#define array_needsize(type,base,cur,cnt,init) \
697 if (expect_false ((cnt) > (cur))) \ 1998 if (ecb_expect_false ((cnt) > (cur))) \
698 { \ 1999 { \
699 int ocur_ = (cur); \ 2000 ecb_unused int ocur_ = (cur); \
700 (base) = (type *)array_realloc \ 2001 (base) = (type *)array_realloc \
701 (sizeof (type), (base), &(cur), (cnt)); \ 2002 (sizeof (type), (base), &(cur), (cnt)); \
702 init ((base) + (ocur_), (cur) - ocur_); \ 2003 init ((base), ocur_, ((cur) - ocur_)); \
703 } 2004 }
704 2005
705#if 0 2006#if 0
706#define array_slim(type,stem) \ 2007#define array_slim(type,stem) \
707 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2008 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
… …
716 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
717 2018
718/*****************************************************************************/ 2019/*****************************************************************************/
719 2020
720/* dummy callback for pending events */ 2021/* dummy callback for pending events */
721static void noinline 2022ecb_noinline
2023static void
722pendingcb (EV_P_ ev_prepare *w, int revents) 2024pendingcb (EV_P_ ev_prepare *w, int revents)
723{ 2025{
724} 2026}
725 2027
726void noinline 2028ecb_noinline
2029void
727ev_feed_event (EV_P_ void *w, int revents) 2030ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
728{ 2031{
729 W w_ = (W)w; 2032 W w_ = (W)w;
730 int pri = ABSPRI (w_); 2033 int pri = ABSPRI (w_);
731 2034
732 if (expect_false (w_->pending)) 2035 if (ecb_expect_false (w_->pending))
733 pendings [pri][w_->pending - 1].events |= revents; 2036 pendings [pri][w_->pending - 1].events |= revents;
734 else 2037 else
735 { 2038 {
736 w_->pending = ++pendingcnt [pri]; 2039 w_->pending = ++pendingcnt [pri];
737 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2040 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
738 pendings [pri][w_->pending - 1].w = w_; 2041 pendings [pri][w_->pending - 1].w = w_;
739 pendings [pri][w_->pending - 1].events = revents; 2042 pendings [pri][w_->pending - 1].events = revents;
740 } 2043 }
2044
2045 pendingpri = NUMPRI - 1;
741} 2046}
742 2047
743inline_speed void 2048inline_speed void
744feed_reverse (EV_P_ W w) 2049feed_reverse (EV_P_ W w)
745{ 2050{
746 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2051 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
747 rfeeds [rfeedcnt++] = w; 2052 rfeeds [rfeedcnt++] = w;
748} 2053}
749 2054
750inline_size void 2055inline_size void
751feed_reverse_done (EV_P_ int revents) 2056feed_reverse_done (EV_P_ int revents)
… …
765} 2070}
766 2071
767/*****************************************************************************/ 2072/*****************************************************************************/
768 2073
769inline_speed void 2074inline_speed void
770fd_event_nc (EV_P_ int fd, int revents) 2075fd_event_nocheck (EV_P_ int fd, int revents)
771{ 2076{
772 ANFD *anfd = anfds + fd; 2077 ANFD *anfd = anfds + fd;
773 ev_io *w; 2078 ev_io *w;
774 2079
775 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)
… …
786inline_speed void 2091inline_speed void
787fd_event (EV_P_ int fd, int revents) 2092fd_event (EV_P_ int fd, int revents)
788{ 2093{
789 ANFD *anfd = anfds + fd; 2094 ANFD *anfd = anfds + fd;
790 2095
791 if (expect_true (!anfd->reify)) 2096 if (ecb_expect_true (!anfd->reify))
792 fd_event_nc (EV_A_ fd, revents); 2097 fd_event_nocheck (EV_A_ fd, revents);
793} 2098}
794 2099
795void 2100void
796ev_feed_fd_event (EV_P_ int fd, int revents) 2101ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
797{ 2102{
798 if (fd >= 0 && fd < anfdmax) 2103 if (fd >= 0 && fd < anfdmax)
799 fd_event_nc (EV_A_ fd, revents); 2104 fd_event_nocheck (EV_A_ fd, revents);
800} 2105}
801 2106
802/* make sure the external fd watch events are in-sync */ 2107/* make sure the external fd watch events are in-sync */
803/* with the kernel/libev internal state */ 2108/* with the kernel/libev internal state */
804inline_size void 2109inline_size void
805fd_reify (EV_P) 2110fd_reify (EV_P)
806{ 2111{
807 int i; 2112 int i;
808 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
809 for (i = 0; i < fdchangecnt; ++i) 2139 for (i = 0; i < fdchangecnt; ++i)
810 { 2140 {
811 int fd = fdchanges [i]; 2141 int fd = fdchanges [i];
812 ANFD *anfd = anfds + fd; 2142 ANFD *anfd = anfds + fd;
813 ev_io *w; 2143 ev_io *w;
814 2144
815 unsigned char events = 0; 2145 unsigned char o_events = anfd->events;
2146 unsigned char o_reify = anfd->reify;
816 2147
817 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2148 anfd->reify = 0;
818 events |= (unsigned char)w->events;
819 2149
820#if EV_SELECT_IS_WINSOCKET 2150 /*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
821 if (events)
822 { 2151 {
823 unsigned long arg; 2152 anfd->events = 0;
824 #ifdef EV_FD_TO_WIN32_HANDLE 2153
825 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 2154 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
826 #else 2155 anfd->events |= (unsigned char)w->events;
827 anfd->handle = _get_osfhandle (fd); 2156
828 #endif 2157 if (o_events != anfd->events)
829 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 2158 o_reify = EV__IOFDSET; /* actually |= */
830 } 2159 }
831#endif
832 2160
833 { 2161 if (o_reify & EV__IOFDSET)
834 unsigned char o_events = anfd->events;
835 unsigned char o_reify = anfd->reify;
836
837 anfd->reify = 0;
838 anfd->events = events;
839
840 if (o_events != events || o_reify & EV__IOFDSET)
841 backend_modify (EV_A_ fd, o_events, events); 2162 backend_modify (EV_A_ fd, o_events, anfd->events);
842 }
843 } 2163 }
844 2164
845 fdchangecnt = 0; 2165 fdchangecnt = 0;
846} 2166}
847 2167
848/* something about the given fd changed */ 2168/* something about the given fd changed */
849inline_size void 2169inline_size
2170void
850fd_change (EV_P_ int fd, int flags) 2171fd_change (EV_P_ int fd, int flags)
851{ 2172{
852 unsigned char reify = anfds [fd].reify; 2173 unsigned char reify = anfds [fd].reify;
853 anfds [fd].reify |= flags; 2174 anfds [fd].reify |= flags;
854 2175
855 if (expect_true (!reify)) 2176 if (ecb_expect_true (!reify))
856 { 2177 {
857 ++fdchangecnt; 2178 ++fdchangecnt;
858 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2179 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
859 fdchanges [fdchangecnt - 1] = fd; 2180 fdchanges [fdchangecnt - 1] = fd;
860 } 2181 }
861} 2182}
862 2183
863/* 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 */
864inline_speed void 2185inline_speed ecb_cold void
865fd_kill (EV_P_ int fd) 2186fd_kill (EV_P_ int fd)
866{ 2187{
867 ev_io *w; 2188 ev_io *w;
868 2189
869 while ((w = (ev_io *)anfds [fd].head)) 2190 while ((w = (ev_io *)anfds [fd].head))
… …
871 ev_io_stop (EV_A_ w); 2192 ev_io_stop (EV_A_ w);
872 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);
873 } 2194 }
874} 2195}
875 2196
876/* check whether the given fd is atcually valid, for error recovery */ 2197/* check whether the given fd is actually valid, for error recovery */
877inline_size int 2198inline_size ecb_cold int
878fd_valid (int fd) 2199fd_valid (int fd)
879{ 2200{
880#ifdef _WIN32 2201#ifdef _WIN32
881 return _get_osfhandle (fd) != -1; 2202 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
882#else 2203#else
883 return fcntl (fd, F_GETFD) != -1; 2204 return fcntl (fd, F_GETFD) != -1;
884#endif 2205#endif
885} 2206}
886 2207
887/* called on EBADF to verify fds */ 2208/* called on EBADF to verify fds */
888static void noinline 2209ecb_noinline ecb_cold
2210static void
889fd_ebadf (EV_P) 2211fd_ebadf (EV_P)
890{ 2212{
891 int fd; 2213 int fd;
892 2214
893 for (fd = 0; fd < anfdmax; ++fd) 2215 for (fd = 0; fd < anfdmax; ++fd)
… …
895 if (!fd_valid (fd) && errno == EBADF) 2217 if (!fd_valid (fd) && errno == EBADF)
896 fd_kill (EV_A_ fd); 2218 fd_kill (EV_A_ fd);
897} 2219}
898 2220
899/* 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 */
900static void noinline 2222ecb_noinline ecb_cold
2223static void
901fd_enomem (EV_P) 2224fd_enomem (EV_P)
902{ 2225{
903 int fd; 2226 int fd;
904 2227
905 for (fd = anfdmax; fd--; ) 2228 for (fd = anfdmax; fd--; )
906 if (anfds [fd].events) 2229 if (anfds [fd].events)
907 { 2230 {
908 fd_kill (EV_A_ fd); 2231 fd_kill (EV_A_ fd);
909 return; 2232 break;
910 } 2233 }
911} 2234}
912 2235
913/* 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 */
914static void noinline 2237ecb_noinline
2238static void
915fd_rearm_all (EV_P) 2239fd_rearm_all (EV_P)
916{ 2240{
917 int fd; 2241 int fd;
918 2242
919 for (fd = 0; fd < anfdmax; ++fd) 2243 for (fd = 0; fd < anfdmax; ++fd)
… …
923 anfds [fd].emask = 0; 2247 anfds [fd].emask = 0;
924 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); 2248 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
925 } 2249 }
926} 2250}
927 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
928/*****************************************************************************/ 2266/*****************************************************************************/
929 2267
930/* 2268/*
931 * 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
932 * 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
933 * the branching factor of the d-tree. 2271 * the branching factor of the d-tree.
934 */ 2272 */
935 2273
936/* 2274/*
… …
958 ev_tstamp minat; 2296 ev_tstamp minat;
959 ANHE *minpos; 2297 ANHE *minpos;
960 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; 2298 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
961 2299
962 /* find minimum child */ 2300 /* find minimum child */
963 if (expect_true (pos + DHEAP - 1 < E)) 2301 if (ecb_expect_true (pos + DHEAP - 1 < E))
964 { 2302 {
965 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2303 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
966 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));
967 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));
968 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));
… …
1004 2342
1005 for (;;) 2343 for (;;)
1006 { 2344 {
1007 int c = k << 1; 2345 int c = k << 1;
1008 2346
1009 if (c > N + HEAP0 - 1) 2347 if (c >= N + HEAP0)
1010 break; 2348 break;
1011 2349
1012 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])
1013 ? 1 : 0; 2351 ? 1 : 0;
1014 2352
… …
1050 2388
1051/* move an element suitably so it is in a correct place */ 2389/* move an element suitably so it is in a correct place */
1052inline_size void 2390inline_size void
1053adjustheap (ANHE *heap, int N, int k) 2391adjustheap (ANHE *heap, int N, int k)
1054{ 2392{
1055 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)]))
1056 upheap (heap, k); 2394 upheap (heap, k);
1057 else 2395 else
1058 downheap (heap, N, k); 2396 downheap (heap, N, k);
1059} 2397}
1060 2398
… …
1073/*****************************************************************************/ 2411/*****************************************************************************/
1074 2412
1075/* associate signal watchers to a signal signal */ 2413/* associate signal watchers to a signal signal */
1076typedef struct 2414typedef struct
1077{ 2415{
2416 EV_ATOMIC_T pending;
2417#if EV_MULTIPLICITY
2418 EV_P;
2419#endif
1078 WL head; 2420 WL head;
1079 EV_ATOMIC_T gotsig;
1080} ANSIG; 2421} ANSIG;
1081 2422
1082static ANSIG *signals; 2423static ANSIG signals [EV_NSIG - 1];
1083static int signalmax;
1084
1085static EV_ATOMIC_T gotsig;
1086 2424
1087/*****************************************************************************/ 2425/*****************************************************************************/
1088 2426
1089/* used to prepare libev internal fd's */ 2427#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1090/* 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
1091inline_speed void 2475inline_speed void
1092fd_intern (int fd) 2476evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1093{ 2477{
1094#ifdef _WIN32 2478 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1095 unsigned long arg = 1;
1096 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1097#else
1098 fcntl (fd, F_SETFD, FD_CLOEXEC);
1099 fcntl (fd, F_SETFL, O_NONBLOCK);
1100#endif
1101}
1102 2479
1103static void noinline 2480 if (ecb_expect_true (*flag))
1104evpipe_init (EV_P) 2481 return;
1105{ 2482
1106 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)
1107 { 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
1108#if EV_USE_EVENTFD 2499#if EV_USE_EVENTFD
1109 if ((evfd = eventfd (0, 0)) >= 0) 2500 if (evpipe [0] < 0)
1110 { 2501 {
1111 evpipe [0] = -1; 2502 uint64_t counter = 1;
1112 fd_intern (evfd); 2503 write (evpipe [1], &counter, sizeof (uint64_t));
1113 ev_io_set (&pipe_w, evfd, EV_READ);
1114 } 2504 }
1115 else 2505 else
1116#endif 2506#endif
1117 { 2507 {
1118 while (pipe (evpipe)) 2508#ifdef _WIN32
1119 ev_syserr ("(libev) error creating signal/async pipe"); 2509 WSABUF buf;
1120 2510 DWORD sent;
1121 fd_intern (evpipe [0]); 2511 buf.buf = (char *)&buf;
1122 fd_intern (evpipe [1]); 2512 buf.len = 1;
1123 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
1124 } 2517 }
1125
1126 ev_io_start (EV_A_ &pipe_w);
1127 ev_unref (EV_A); /* watcher should not keep loop alive */
1128 }
1129}
1130
1131inline_size void
1132evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1133{
1134 if (!*flag)
1135 {
1136 int old_errno = errno; /* save errno because write might clobber it */
1137
1138 *flag = 1;
1139
1140#if EV_USE_EVENTFD
1141 if (evfd >= 0)
1142 {
1143 uint64_t counter = 1;
1144 write (evfd, &counter, sizeof (uint64_t));
1145 }
1146 else
1147#endif
1148 write (evpipe [1], &old_errno, 1);
1149 2518
1150 errno = old_errno; 2519 errno = old_errno;
1151 } 2520 }
1152} 2521}
1153 2522
1154/* called whenever the libev signal pipe */ 2523/* called whenever the libev signal pipe */
1155/* got some events (signal, async) */ 2524/* got some events (signal, async) */
1156static void 2525static void
1157pipecb (EV_P_ ev_io *iow, int revents) 2526pipecb (EV_P_ ev_io *iow, int revents)
1158{ 2527{
2528 int i;
2529
2530 if (revents & EV_READ)
2531 {
1159#if EV_USE_EVENTFD 2532#if EV_USE_EVENTFD
1160 if (evfd >= 0) 2533 if (evpipe [0] < 0)
1161 { 2534 {
1162 uint64_t counter; 2535 uint64_t counter;
1163 read (evfd, &counter, sizeof (uint64_t)); 2536 read (evpipe [1], &counter, sizeof (uint64_t));
1164 } 2537 }
1165 else 2538 else
1166#endif 2539#endif
1167 { 2540 {
1168 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
1169 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)
1170 } 2561 {
2562 sig_pending = 0;
1171 2563
1172 if (gotsig && ev_is_default_loop (EV_A)) 2564 ECB_MEMORY_FENCE;
1173 {
1174 int signum;
1175 gotsig = 0;
1176 2565
1177 for (signum = signalmax; signum--; ) 2566 for (i = EV_NSIG - 1; i--; )
1178 if (signals [signum].gotsig) 2567 if (ecb_expect_false (signals [i].pending))
1179 ev_feed_signal_event (EV_A_ signum + 1); 2568 ev_feed_signal_event (EV_A_ i + 1);
1180 } 2569 }
2570#endif
1181 2571
1182#if EV_ASYNC_ENABLE 2572#if EV_ASYNC_ENABLE
1183 if (gotasync) 2573 if (async_pending)
1184 { 2574 {
1185 int i; 2575 async_pending = 0;
1186 gotasync = 0; 2576
2577 ECB_MEMORY_FENCE;
1187 2578
1188 for (i = asynccnt; i--; ) 2579 for (i = asynccnt; i--; )
1189 if (asyncs [i]->sent) 2580 if (asyncs [i]->sent)
1190 { 2581 {
1191 asyncs [i]->sent = 0; 2582 asyncs [i]->sent = 0;
2583 ECB_MEMORY_FENCE_RELEASE;
1192 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2584 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1193 } 2585 }
1194 } 2586 }
1195#endif 2587#endif
1196} 2588}
1197 2589
1198/*****************************************************************************/ 2590/*****************************************************************************/
1199 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
1200static void 2608static void
1201ev_sighandler (int signum) 2609ev_sighandler (int signum)
1202{ 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
1203#if EV_MULTIPLICITY 2629#if EV_MULTIPLICITY
1204 struct ev_loop *loop = &default_loop_struct; 2630 /* it is permissible to try to feed a signal to the wrong loop */
1205#endif 2631 /* or, likely more useful, feeding a signal nobody is waiting for */
1206 2632
1207#if _WIN32 2633 if (ecb_expect_false (signals [signum].loop != EV_A))
1208 signal (signum, ev_sighandler);
1209#endif
1210
1211 signals [signum - 1].gotsig = 1;
1212 evpipe_write (EV_A_ &gotsig);
1213}
1214
1215void noinline
1216ev_feed_signal_event (EV_P_ int signum)
1217{
1218 WL w;
1219
1220#if EV_MULTIPLICITY
1221 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1222#endif
1223
1224 --signum;
1225
1226 if (signum < 0 || signum >= signalmax)
1227 return; 2634 return;
2635#endif
1228 2636
1229 signals [signum].gotsig = 0; 2637 signals [signum].pending = 0;
2638 ECB_MEMORY_FENCE_RELEASE;
1230 2639
1231 for (w = signals [signum].head; w; w = w->next) 2640 for (w = signals [signum].head; w; w = w->next)
1232 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2641 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1233} 2642}
1234 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
1235/*****************************************************************************/ 2666/*****************************************************************************/
1236 2667
2668#if EV_CHILD_ENABLE
1237static WL childs [EV_PID_HASHSIZE]; 2669static WL childs [EV_PID_HASHSIZE];
1238
1239#ifndef _WIN32
1240 2670
1241static ev_signal childev; 2671static ev_signal childev;
1242 2672
1243#ifndef WIFCONTINUED 2673#ifndef WIFCONTINUED
1244# define WIFCONTINUED(status) 0 2674# define WIFCONTINUED(status) 0
… …
1249child_reap (EV_P_ int chain, int pid, int status) 2679child_reap (EV_P_ int chain, int pid, int status)
1250{ 2680{
1251 ev_child *w; 2681 ev_child *w;
1252 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2682 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1253 2683
1254 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)
1255 { 2685 {
1256 if ((w->pid == pid || !w->pid) 2686 if ((w->pid == pid || !w->pid)
1257 && (!traced || (w->flags & 1))) 2687 && (!traced || (w->flags & 1)))
1258 { 2688 {
1259 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 */
… …
1284 /* 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 */
1285 /* 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 */
1286 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2716 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1287 2717
1288 child_reap (EV_A_ pid, pid, status); 2718 child_reap (EV_A_ pid, pid, status);
1289 if (EV_PID_HASHSIZE > 1) 2719 if ((EV_PID_HASHSIZE) > 1)
1290 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 */
1291} 2721}
1292 2722
1293#endif 2723#endif
1294 2724
1295/*****************************************************************************/ 2725/*****************************************************************************/
1296 2726
2727#if EV_USE_IOCP
2728# include "ev_iocp.c"
2729#endif
1297#if EV_USE_PORT 2730#if EV_USE_PORT
1298# include "ev_port.c" 2731# include "ev_port.c"
1299#endif 2732#endif
1300#if EV_USE_KQUEUE 2733#if EV_USE_KQUEUE
1301# include "ev_kqueue.c" 2734# include "ev_kqueue.c"
1302#endif 2735#endif
1303#if EV_USE_EPOLL 2736#if EV_USE_EPOLL
1304# include "ev_epoll.c" 2737# include "ev_epoll.c"
1305#endif 2738#endif
2739#if EV_USE_LINUXAIO
2740# include "ev_linuxaio.c"
2741#endif
1306#if EV_USE_POLL 2742#if EV_USE_POLL
1307# include "ev_poll.c" 2743# include "ev_poll.c"
1308#endif 2744#endif
1309#if EV_USE_SELECT 2745#if EV_USE_SELECT
1310# include "ev_select.c" 2746# include "ev_select.c"
1311#endif 2747#endif
1312 2748
1313int 2749ecb_cold int
1314ev_version_major (void) 2750ev_version_major (void) EV_NOEXCEPT
1315{ 2751{
1316 return EV_VERSION_MAJOR; 2752 return EV_VERSION_MAJOR;
1317} 2753}
1318 2754
1319int 2755ecb_cold int
1320ev_version_minor (void) 2756ev_version_minor (void) EV_NOEXCEPT
1321{ 2757{
1322 return EV_VERSION_MINOR; 2758 return EV_VERSION_MINOR;
1323} 2759}
1324 2760
1325/* 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 */
1326int inline_size 2762inline_size ecb_cold int
1327enable_secure (void) 2763enable_secure (void)
1328{ 2764{
1329#ifdef _WIN32 2765#ifdef _WIN32
1330 return 0; 2766 return 0;
1331#else 2767#else
1332 return getuid () != geteuid () 2768 return getuid () != geteuid ()
1333 || getgid () != getegid (); 2769 || getgid () != getegid ();
1334#endif 2770#endif
1335} 2771}
1336 2772
2773ecb_cold
1337unsigned int 2774unsigned int
1338ev_supported_backends (void) 2775ev_supported_backends (void) EV_NOEXCEPT
1339{ 2776{
1340 unsigned int flags = 0; 2777 unsigned int flags = 0;
1341 2778
1342 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2779 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1343 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2780 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
1344 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 2781 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2782 if (EV_USE_LINUXAIO) flags |= EVBACKEND_LINUXAIO;
1345 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 2783 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
1346 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2784 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
1347 2785
1348 return flags; 2786 return flags;
1349} 2787}
1350 2788
2789ecb_cold
1351unsigned int 2790unsigned int
1352ev_recommended_backends (void) 2791ev_recommended_backends (void) EV_NOEXCEPT
1353{ 2792{
1354 unsigned int flags = ev_supported_backends (); 2793 unsigned int flags = ev_supported_backends ();
1355 2794
1356#ifndef __NetBSD__ 2795#ifndef __NetBSD__
1357 /* kqueue is borked on everything but netbsd apparently */ 2796 /* kqueue is borked on everything but netbsd apparently */
… …
1361#ifdef __APPLE__ 2800#ifdef __APPLE__
1362 /* only select works correctly on that "unix-certified" platform */ 2801 /* only select works correctly on that "unix-certified" platform */
1363 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2802 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1364 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 */
1365#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
1366 2813
1367 return flags; 2814 return flags;
1368} 2815}
1369 2816
2817ecb_cold
1370unsigned int 2818unsigned int
1371ev_embeddable_backends (void) 2819ev_embeddable_backends (void) EV_NOEXCEPT
1372{ 2820{
1373 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2821 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1374 2822
1375 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2823 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1376 /* please fix it and tell me how to detect the fix */ 2824 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1377 flags &= ~EVBACKEND_EPOLL; 2825 flags &= ~EVBACKEND_EPOLL;
1378 2826
1379 return flags; 2827 return flags;
1380} 2828}
1381 2829
1382unsigned int 2830unsigned int
1383ev_backend (EV_P) 2831ev_backend (EV_P) EV_NOEXCEPT
1384{ 2832{
1385 return backend; 2833 return backend;
1386} 2834}
1387 2835
1388#if EV_MINIMAL < 2 2836#if EV_FEATURE_API
1389unsigned int 2837unsigned int
1390ev_loop_count (EV_P) 2838ev_iteration (EV_P) EV_NOEXCEPT
1391{ 2839{
1392 return loop_count; 2840 return loop_count;
1393} 2841}
1394 2842
1395unsigned int 2843unsigned int
1396ev_loop_depth (EV_P) 2844ev_depth (EV_P) EV_NOEXCEPT
1397{ 2845{
1398 return loop_depth; 2846 return loop_depth;
1399} 2847}
1400 2848
1401void 2849void
1402ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2850ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1403{ 2851{
1404 io_blocktime = interval; 2852 io_blocktime = interval;
1405} 2853}
1406 2854
1407void 2855void
1408ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2856ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1409{ 2857{
1410 timeout_blocktime = interval; 2858 timeout_blocktime = interval;
1411} 2859}
1412 2860
1413void 2861void
1414ev_set_userdata (EV_P_ void *data) 2862ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
1415{ 2863{
1416 userdata = data; 2864 userdata = data;
1417} 2865}
1418 2866
1419void * 2867void *
1420ev_userdata (EV_P) 2868ev_userdata (EV_P) EV_NOEXCEPT
1421{ 2869{
1422 return userdata; 2870 return userdata;
1423} 2871}
1424 2872
2873void
1425void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2874ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
1426{ 2875{
1427 invoke_cb = invoke_pending_cb; 2876 invoke_cb = invoke_pending_cb;
1428} 2877}
1429 2878
2879void
1430void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2880ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
1431{ 2881{
1432 release_cb = release; 2882 release_cb = release;
1433 acquire_cb = acquire; 2883 acquire_cb = acquire;
1434} 2884}
1435#endif 2885#endif
1436 2886
1437/* initialise a loop structure, must be zero-initialised */ 2887/* initialise a loop structure, must be zero-initialised */
1438static void noinline 2888ecb_noinline ecb_cold
2889static void
1439loop_init (EV_P_ unsigned int flags) 2890loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
1440{ 2891{
1441 if (!backend) 2892 if (!backend)
1442 { 2893 {
2894 origflags = flags;
2895
1443#if EV_USE_REALTIME 2896#if EV_USE_REALTIME
1444 if (!have_realtime) 2897 if (!have_realtime)
1445 { 2898 {
1446 struct timespec ts; 2899 struct timespec ts;
1447 2900
… …
1458 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 2911 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1459 have_monotonic = 1; 2912 have_monotonic = 1;
1460 } 2913 }
1461#endif 2914#endif
1462 2915
1463 ev_rt_now = ev_time ();
1464 mn_now = get_clock ();
1465 now_floor = mn_now;
1466 rtmn_diff = ev_rt_now - mn_now;
1467#if EV_MINIMAL < 2
1468 invoke_cb = ev_invoke_pending;
1469#endif
1470
1471 io_blocktime = 0.;
1472 timeout_blocktime = 0.;
1473 backend = 0;
1474 backend_fd = -1;
1475 gotasync = 0;
1476#if EV_USE_INOTIFY
1477 fs_fd = -2;
1478#endif
1479
1480 /* pid check not overridable via env */ 2916 /* pid check not overridable via env */
1481#ifndef _WIN32 2917#ifndef _WIN32
1482 if (flags & EVFLAG_FORKCHECK) 2918 if (flags & EVFLAG_FORKCHECK)
1483 curpid = getpid (); 2919 curpid = getpid ();
1484#endif 2920#endif
… …
1486 if (!(flags & EVFLAG_NOENV) 2922 if (!(flags & EVFLAG_NOENV)
1487 && !enable_secure () 2923 && !enable_secure ()
1488 && getenv ("LIBEV_FLAGS")) 2924 && getenv ("LIBEV_FLAGS"))
1489 flags = atoi (getenv ("LIBEV_FLAGS")); 2925 flags = atoi (getenv ("LIBEV_FLAGS"));
1490 2926
1491 if (!(flags & 0x0000ffffU)) 2927 ev_rt_now = ev_time ();
2928 mn_now = get_clock ();
2929 now_floor = mn_now;
2930 rtmn_diff = ev_rt_now - mn_now;
2931#if EV_FEATURE_API
2932 invoke_cb = ev_invoke_pending;
2933#endif
2934
2935 io_blocktime = 0.;
2936 timeout_blocktime = 0.;
2937 backend = 0;
2938 backend_fd = -1;
2939 sig_pending = 0;
2940#if EV_ASYNC_ENABLE
2941 async_pending = 0;
2942#endif
2943 pipe_write_skipped = 0;
2944 pipe_write_wanted = 0;
2945 evpipe [0] = -1;
2946 evpipe [1] = -1;
2947#if EV_USE_INOTIFY
2948 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2949#endif
2950#if EV_USE_SIGNALFD
2951 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
2952#endif
2953
2954 if (!(flags & EVBACKEND_MASK))
1492 flags |= ev_recommended_backends (); 2955 flags |= ev_recommended_backends ();
1493 2956
2957#if EV_USE_IOCP
2958 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2959#endif
1494#if EV_USE_PORT 2960#if EV_USE_PORT
1495 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2961 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1496#endif 2962#endif
1497#if EV_USE_KQUEUE 2963#if EV_USE_KQUEUE
1498 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2964 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
2965#endif
2966#if EV_USE_LINUXAIO
2967 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
1499#endif 2968#endif
1500#if EV_USE_EPOLL 2969#if EV_USE_EPOLL
1501 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 2970 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
1502#endif 2971#endif
1503#if EV_USE_POLL 2972#if EV_USE_POLL
1504 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 2973 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
1505#endif 2974#endif
1506#if EV_USE_SELECT 2975#if EV_USE_SELECT
1507 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2976 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
1508#endif 2977#endif
1509 2978
1510 ev_prepare_init (&pending_w, pendingcb); 2979 ev_prepare_init (&pending_w, pendingcb);
1511 2980
2981#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1512 ev_init (&pipe_w, pipecb); 2982 ev_init (&pipe_w, pipecb);
1513 ev_set_priority (&pipe_w, EV_MAXPRI); 2983 ev_set_priority (&pipe_w, EV_MAXPRI);
2984#endif
1514 } 2985 }
1515} 2986}
1516 2987
1517/* free up a loop structure */ 2988/* free up a loop structure */
1518static void noinline 2989ecb_cold
2990void
1519loop_destroy (EV_P) 2991ev_loop_destroy (EV_P)
1520{ 2992{
1521 int i; 2993 int i;
1522 2994
2995#if EV_MULTIPLICITY
2996 /* mimic free (0) */
2997 if (!EV_A)
2998 return;
2999#endif
3000
3001#if EV_CLEANUP_ENABLE
3002 /* queue cleanup watchers (and execute them) */
3003 if (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
1523 if (ev_is_active (&pipe_w)) 3018 if (ev_is_active (&pipe_w))
1524 { 3019 {
1525 ev_ref (EV_A); /* signal watcher */ 3020 /*ev_ref (EV_A);*/
1526 ev_io_stop (EV_A_ &pipe_w); 3021 /*ev_io_stop (EV_A_ &pipe_w);*/
1527 3022
3023 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
3024 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
3025 }
3026
1528#if EV_USE_EVENTFD 3027#if EV_USE_SIGNALFD
1529 if (evfd >= 0) 3028 if (ev_is_active (&sigfd_w))
1530 close (evfd); 3029 close (sigfd);
1531#endif 3030#endif
1532
1533 if (evpipe [0] >= 0)
1534 {
1535 close (evpipe [0]);
1536 close (evpipe [1]);
1537 }
1538 }
1539 3031
1540#if EV_USE_INOTIFY 3032#if EV_USE_INOTIFY
1541 if (fs_fd >= 0) 3033 if (fs_fd >= 0)
1542 close (fs_fd); 3034 close (fs_fd);
1543#endif 3035#endif
1544 3036
1545 if (backend_fd >= 0) 3037 if (backend_fd >= 0)
1546 close (backend_fd); 3038 close (backend_fd);
1547 3039
3040#if EV_USE_IOCP
3041 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
3042#endif
1548#if EV_USE_PORT 3043#if EV_USE_PORT
1549 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3044 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1550#endif 3045#endif
1551#if EV_USE_KQUEUE 3046#if EV_USE_KQUEUE
1552 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3047 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
3048#endif
3049#if EV_USE_LINUXAIO
3050 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
1553#endif 3051#endif
1554#if EV_USE_EPOLL 3052#if EV_USE_EPOLL
1555 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3053 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
1556#endif 3054#endif
1557#if EV_USE_POLL 3055#if EV_USE_POLL
1558 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3056 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
1559#endif 3057#endif
1560#if EV_USE_SELECT 3058#if EV_USE_SELECT
1561 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3059 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
1562#endif 3060#endif
1563 3061
1564 for (i = NUMPRI; i--; ) 3062 for (i = NUMPRI; i--; )
1565 { 3063 {
1566 array_free (pending, [i]); 3064 array_free (pending, [i]);
1567#if EV_IDLE_ENABLE 3065#if EV_IDLE_ENABLE
1568 array_free (idle, [i]); 3066 array_free (idle, [i]);
1569#endif 3067#endif
1570 } 3068 }
1571 3069
1572 ev_free (anfds); anfdmax = 0; 3070 ev_free (anfds); anfds = 0; anfdmax = 0;
1573 3071
1574 /* have to use the microsoft-never-gets-it-right macro */ 3072 /* have to use the microsoft-never-gets-it-right macro */
1575 array_free (rfeed, EMPTY); 3073 array_free (rfeed, EMPTY);
1576 array_free (fdchange, EMPTY); 3074 array_free (fdchange, EMPTY);
1577 array_free (timer, EMPTY); 3075 array_free (timer, EMPTY);
… …
1579 array_free (periodic, EMPTY); 3077 array_free (periodic, EMPTY);
1580#endif 3078#endif
1581#if EV_FORK_ENABLE 3079#if EV_FORK_ENABLE
1582 array_free (fork, EMPTY); 3080 array_free (fork, EMPTY);
1583#endif 3081#endif
3082#if EV_CLEANUP_ENABLE
3083 array_free (cleanup, EMPTY);
3084#endif
1584 array_free (prepare, EMPTY); 3085 array_free (prepare, EMPTY);
1585 array_free (check, EMPTY); 3086 array_free (check, EMPTY);
1586#if EV_ASYNC_ENABLE 3087#if EV_ASYNC_ENABLE
1587 array_free (async, EMPTY); 3088 array_free (async, EMPTY);
1588#endif 3089#endif
1589 3090
1590 backend = 0; 3091 backend = 0;
3092
3093#if EV_MULTIPLICITY
3094 if (ev_is_default_loop (EV_A))
3095#endif
3096 ev_default_loop_ptr = 0;
3097#if EV_MULTIPLICITY
3098 else
3099 ev_free (EV_A);
3100#endif
1591} 3101}
1592 3102
1593#if EV_USE_INOTIFY 3103#if EV_USE_INOTIFY
1594inline_size void infy_fork (EV_P); 3104inline_size void infy_fork (EV_P);
1595#endif 3105#endif
1596 3106
1597inline_size void 3107inline_size void
1598loop_fork (EV_P) 3108loop_fork (EV_P)
1599{ 3109{
1600#if EV_USE_PORT 3110#if EV_USE_PORT
1601 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3111 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1602#endif 3112#endif
1603#if EV_USE_KQUEUE 3113#if EV_USE_KQUEUE
1604 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 3114 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
3115#endif
3116#if EV_USE_LINUXAIO
3117 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
1605#endif 3118#endif
1606#if EV_USE_EPOLL 3119#if EV_USE_EPOLL
1607 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3120 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
1608#endif 3121#endif
1609#if EV_USE_INOTIFY 3122#if EV_USE_INOTIFY
1610 infy_fork (EV_A); 3123 infy_fork (EV_A);
1611#endif 3124#endif
1612 3125
3126#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1613 if (ev_is_active (&pipe_w)) 3127 if (ev_is_active (&pipe_w) && postfork != 2)
1614 { 3128 {
1615 /* this "locks" the handlers against writing to the pipe */ 3129 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1616 /* while we modify the fd vars */
1617 gotsig = 1;
1618#if EV_ASYNC_ENABLE
1619 gotasync = 1;
1620#endif
1621 3130
1622 ev_ref (EV_A); 3131 ev_ref (EV_A);
1623 ev_io_stop (EV_A_ &pipe_w); 3132 ev_io_stop (EV_A_ &pipe_w);
1624 3133
1625#if EV_USE_EVENTFD
1626 if (evfd >= 0)
1627 close (evfd);
1628#endif
1629
1630 if (evpipe [0] >= 0) 3134 if (evpipe [0] >= 0)
1631 { 3135 EV_WIN32_CLOSE_FD (evpipe [0]);
1632 close (evpipe [0]);
1633 close (evpipe [1]);
1634 }
1635 3136
1636 evpipe_init (EV_A); 3137 evpipe_init (EV_A);
1637 /* now iterate over everything, in case we missed something */ 3138 /* iterate over everything, in case we missed something before */
1638 pipecb (EV_A_ &pipe_w, EV_READ); 3139 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1639 } 3140 }
3141#endif
1640 3142
1641 postfork = 0; 3143 postfork = 0;
1642} 3144}
1643 3145
1644#if EV_MULTIPLICITY 3146#if EV_MULTIPLICITY
1645 3147
3148ecb_cold
1646struct ev_loop * 3149struct ev_loop *
1647ev_loop_new (unsigned int flags) 3150ev_loop_new (unsigned int flags) EV_NOEXCEPT
1648{ 3151{
1649 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3152 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1650 3153
1651 memset (loop, 0, sizeof (struct ev_loop)); 3154 memset (EV_A, 0, sizeof (struct ev_loop));
1652
1653 loop_init (EV_A_ flags); 3155 loop_init (EV_A_ flags);
1654 3156
1655 if (ev_backend (EV_A)) 3157 if (ev_backend (EV_A))
1656 return loop; 3158 return EV_A;
1657 3159
3160 ev_free (EV_A);
1658 return 0; 3161 return 0;
1659} 3162}
1660 3163
1661void
1662ev_loop_destroy (EV_P)
1663{
1664 loop_destroy (EV_A);
1665 ev_free (loop);
1666}
1667
1668void
1669ev_loop_fork (EV_P)
1670{
1671 postfork = 1; /* must be in line with ev_default_fork */
1672}
1673#endif /* multiplicity */ 3164#endif /* multiplicity */
1674 3165
1675#if EV_VERIFY 3166#if EV_VERIFY
1676static void noinline 3167ecb_noinline ecb_cold
3168static void
1677verify_watcher (EV_P_ W w) 3169verify_watcher (EV_P_ W w)
1678{ 3170{
1679 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3171 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1680 3172
1681 if (w->pending) 3173 if (w->pending)
1682 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3174 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1683} 3175}
1684 3176
1685static void noinline 3177ecb_noinline ecb_cold
3178static void
1686verify_heap (EV_P_ ANHE *heap, int N) 3179verify_heap (EV_P_ ANHE *heap, int N)
1687{ 3180{
1688 int i; 3181 int i;
1689 3182
1690 for (i = HEAP0; i < N + HEAP0; ++i) 3183 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1695 3188
1696 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3189 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1697 } 3190 }
1698} 3191}
1699 3192
1700static void noinline 3193ecb_noinline ecb_cold
3194static void
1701array_verify (EV_P_ W *ws, int cnt) 3195array_verify (EV_P_ W *ws, int cnt)
1702{ 3196{
1703 while (cnt--) 3197 while (cnt--)
1704 { 3198 {
1705 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3199 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1706 verify_watcher (EV_A_ ws [cnt]); 3200 verify_watcher (EV_A_ ws [cnt]);
1707 } 3201 }
1708} 3202}
1709#endif 3203#endif
1710 3204
1711#if EV_MINIMAL < 2 3205#if EV_FEATURE_API
1712void 3206void ecb_cold
1713ev_loop_verify (EV_P) 3207ev_verify (EV_P) EV_NOEXCEPT
1714{ 3208{
1715#if EV_VERIFY 3209#if EV_VERIFY
1716 int i; 3210 int i;
1717 WL w; 3211 WL w, w2;
1718 3212
1719 assert (activecnt >= -1); 3213 assert (activecnt >= -1);
1720 3214
1721 assert (fdchangemax >= fdchangecnt); 3215 assert (fdchangemax >= fdchangecnt);
1722 for (i = 0; i < fdchangecnt; ++i) 3216 for (i = 0; i < fdchangecnt; ++i)
1723 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3217 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1724 3218
1725 assert (anfdmax >= 0); 3219 assert (anfdmax >= 0);
1726 for (i = 0; i < anfdmax; ++i) 3220 for (i = 0; i < anfdmax; ++i)
3221 {
3222 int j = 0;
3223
1727 for (w = anfds [i].head; w; w = w->next) 3224 for (w = w2 = anfds [i].head; w; w = w->next)
1728 { 3225 {
1729 verify_watcher (EV_A_ (W)w); 3226 verify_watcher (EV_A_ (W)w);
3227
3228 if (j++ & 1)
3229 {
3230 assert (("libev: io watcher list contains a loop", w != w2));
3231 w2 = w2->next;
3232 }
3233
1730 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3234 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1731 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 3235 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1732 } 3236 }
3237 }
1733 3238
1734 assert (timermax >= timercnt); 3239 assert (timermax >= timercnt);
1735 verify_heap (EV_A_ timers, timercnt); 3240 verify_heap (EV_A_ timers, timercnt);
1736 3241
1737#if EV_PERIODIC_ENABLE 3242#if EV_PERIODIC_ENABLE
… …
1752#if EV_FORK_ENABLE 3257#if EV_FORK_ENABLE
1753 assert (forkmax >= forkcnt); 3258 assert (forkmax >= forkcnt);
1754 array_verify (EV_A_ (W *)forks, forkcnt); 3259 array_verify (EV_A_ (W *)forks, forkcnt);
1755#endif 3260#endif
1756 3261
3262#if EV_CLEANUP_ENABLE
3263 assert (cleanupmax >= cleanupcnt);
3264 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
3265#endif
3266
1757#if EV_ASYNC_ENABLE 3267#if EV_ASYNC_ENABLE
1758 assert (asyncmax >= asynccnt); 3268 assert (asyncmax >= asynccnt);
1759 array_verify (EV_A_ (W *)asyncs, asynccnt); 3269 array_verify (EV_A_ (W *)asyncs, asynccnt);
1760#endif 3270#endif
1761 3271
3272#if EV_PREPARE_ENABLE
1762 assert (preparemax >= preparecnt); 3273 assert (preparemax >= preparecnt);
1763 array_verify (EV_A_ (W *)prepares, preparecnt); 3274 array_verify (EV_A_ (W *)prepares, preparecnt);
3275#endif
1764 3276
3277#if EV_CHECK_ENABLE
1765 assert (checkmax >= checkcnt); 3278 assert (checkmax >= checkcnt);
1766 array_verify (EV_A_ (W *)checks, checkcnt); 3279 array_verify (EV_A_ (W *)checks, checkcnt);
3280#endif
1767 3281
1768# if 0 3282# if 0
3283#if EV_CHILD_ENABLE
1769 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 3284 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1770 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 3285 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
3286#endif
1771# endif 3287# endif
1772#endif 3288#endif
1773} 3289}
1774#endif 3290#endif
1775 3291
1776#if EV_MULTIPLICITY 3292#if EV_MULTIPLICITY
3293ecb_cold
1777struct ev_loop * 3294struct ev_loop *
1778ev_default_loop_init (unsigned int flags)
1779#else 3295#else
1780int 3296int
3297#endif
1781ev_default_loop (unsigned int flags) 3298ev_default_loop (unsigned int flags) EV_NOEXCEPT
1782#endif
1783{ 3299{
1784 if (!ev_default_loop_ptr) 3300 if (!ev_default_loop_ptr)
1785 { 3301 {
1786#if EV_MULTIPLICITY 3302#if EV_MULTIPLICITY
1787 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 3303 EV_P = ev_default_loop_ptr = &default_loop_struct;
1788#else 3304#else
1789 ev_default_loop_ptr = 1; 3305 ev_default_loop_ptr = 1;
1790#endif 3306#endif
1791 3307
1792 loop_init (EV_A_ flags); 3308 loop_init (EV_A_ flags);
1793 3309
1794 if (ev_backend (EV_A)) 3310 if (ev_backend (EV_A))
1795 { 3311 {
1796#ifndef _WIN32 3312#if EV_CHILD_ENABLE
1797 ev_signal_init (&childev, childcb, SIGCHLD); 3313 ev_signal_init (&childev, childcb, SIGCHLD);
1798 ev_set_priority (&childev, EV_MAXPRI); 3314 ev_set_priority (&childev, EV_MAXPRI);
1799 ev_signal_start (EV_A_ &childev); 3315 ev_signal_start (EV_A_ &childev);
1800 ev_unref (EV_A); /* child watcher should not keep loop alive */ 3316 ev_unref (EV_A); /* child watcher should not keep loop alive */
1801#endif 3317#endif
… …
1806 3322
1807 return ev_default_loop_ptr; 3323 return ev_default_loop_ptr;
1808} 3324}
1809 3325
1810void 3326void
1811ev_default_destroy (void) 3327ev_loop_fork (EV_P) EV_NOEXCEPT
1812{ 3328{
1813#if EV_MULTIPLICITY 3329 postfork = 1;
1814 struct ev_loop *loop = ev_default_loop_ptr;
1815#endif
1816
1817 ev_default_loop_ptr = 0;
1818
1819#ifndef _WIN32
1820 ev_ref (EV_A); /* child watcher */
1821 ev_signal_stop (EV_A_ &childev);
1822#endif
1823
1824 loop_destroy (EV_A);
1825}
1826
1827void
1828ev_default_fork (void)
1829{
1830#if EV_MULTIPLICITY
1831 struct ev_loop *loop = ev_default_loop_ptr;
1832#endif
1833
1834 postfork = 1; /* must be in line with ev_loop_fork */
1835} 3330}
1836 3331
1837/*****************************************************************************/ 3332/*****************************************************************************/
1838 3333
1839void 3334void
1840ev_invoke (EV_P_ void *w, int revents) 3335ev_invoke (EV_P_ void *w, int revents)
1841{ 3336{
1842 EV_CB_INVOKE ((W)w, revents); 3337 EV_CB_INVOKE ((W)w, revents);
1843} 3338}
1844 3339
1845void noinline 3340unsigned int
3341ev_pending_count (EV_P) EV_NOEXCEPT
3342{
3343 int pri;
3344 unsigned int count = 0;
3345
3346 for (pri = NUMPRI; pri--; )
3347 count += pendingcnt [pri];
3348
3349 return count;
3350}
3351
3352ecb_noinline
3353void
1846ev_invoke_pending (EV_P) 3354ev_invoke_pending (EV_P)
1847{ 3355{
1848 int pri; 3356 pendingpri = NUMPRI;
1849 3357
1850 for (pri = NUMPRI; pri--; ) 3358 do
3359 {
3360 --pendingpri;
3361
3362 /* pendingpri possibly gets modified in the inner loop */
1851 while (pendingcnt [pri]) 3363 while (pendingcnt [pendingpri])
1852 { 3364 {
1853 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3365 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
1854 3366
1855 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1856 /* ^ this is no longer true, as pending_w could be here */
1857
1858 p->w->pending = 0; 3367 p->w->pending = 0;
1859 EV_CB_INVOKE (p->w, p->events); 3368 EV_CB_INVOKE (p->w, p->events);
1860 EV_FREQUENT_CHECK; 3369 EV_FREQUENT_CHECK;
1861 } 3370 }
3371 }
3372 while (pendingpri);
1862} 3373}
1863 3374
1864#if EV_IDLE_ENABLE 3375#if EV_IDLE_ENABLE
1865/* make idle watchers pending. this handles the "call-idle */ 3376/* make idle watchers pending. this handles the "call-idle */
1866/* only when higher priorities are idle" logic */ 3377/* only when higher priorities are idle" logic */
1867inline_size void 3378inline_size void
1868idle_reify (EV_P) 3379idle_reify (EV_P)
1869{ 3380{
1870 if (expect_false (idleall)) 3381 if (ecb_expect_false (idleall))
1871 { 3382 {
1872 int pri; 3383 int pri;
1873 3384
1874 for (pri = NUMPRI; pri--; ) 3385 for (pri = NUMPRI; pri--; )
1875 { 3386 {
… …
1918 EV_FREQUENT_CHECK; 3429 EV_FREQUENT_CHECK;
1919 feed_reverse (EV_A_ (W)w); 3430 feed_reverse (EV_A_ (W)w);
1920 } 3431 }
1921 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 3432 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1922 3433
1923 feed_reverse_done (EV_A_ EV_TIMEOUT); 3434 feed_reverse_done (EV_A_ EV_TIMER);
1924 } 3435 }
1925} 3436}
1926 3437
1927#if EV_PERIODIC_ENABLE 3438#if EV_PERIODIC_ENABLE
3439
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
1928/* make periodics pending */ 3465/* make periodics pending */
1929inline_size void 3466inline_size void
1930periodics_reify (EV_P) 3467periodics_reify (EV_P)
1931{ 3468{
1932 EV_FREQUENT_CHECK; 3469 EV_FREQUENT_CHECK;
1933 3470
1934 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3471 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1935 { 3472 {
1936 int feed_count = 0;
1937
1938 do 3473 do
1939 { 3474 {
1940 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3475 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
1941 3476
1942 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3477 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
1951 ANHE_at_cache (periodics [HEAP0]); 3486 ANHE_at_cache (periodics [HEAP0]);
1952 downheap (periodics, periodiccnt, HEAP0); 3487 downheap (periodics, periodiccnt, HEAP0);
1953 } 3488 }
1954 else if (w->interval) 3489 else if (w->interval)
1955 { 3490 {
1956 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3491 periodic_recalc (EV_A_ w);
1957 /* if next trigger time is not sufficiently in the future, put it there */
1958 /* this might happen because of floating point inexactness */
1959 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1960 {
1961 ev_at (w) += w->interval;
1962
1963 /* if interval is unreasonably low we might still have a time in the past */
1964 /* so correct this. this will make the periodic very inexact, but the user */
1965 /* has effectively asked to get triggered more often than possible */
1966 if (ev_at (w) < ev_rt_now)
1967 ev_at (w) = ev_rt_now;
1968 }
1969
1970 ANHE_at_cache (periodics [HEAP0]); 3492 ANHE_at_cache (periodics [HEAP0]);
1971 downheap (periodics, periodiccnt, HEAP0); 3493 downheap (periodics, periodiccnt, HEAP0);
1972 } 3494 }
1973 else 3495 else
1974 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3496 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
1981 feed_reverse_done (EV_A_ EV_PERIODIC); 3503 feed_reverse_done (EV_A_ EV_PERIODIC);
1982 } 3504 }
1983} 3505}
1984 3506
1985/* simply recalculate all periodics */ 3507/* simply recalculate all periodics */
1986/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 3508/* TODO: maybe ensure that at least one event happens when jumping forward? */
1987static void noinline 3509ecb_noinline ecb_cold
3510static void
1988periodics_reschedule (EV_P) 3511periodics_reschedule (EV_P)
1989{ 3512{
1990 int i; 3513 int i;
1991 3514
1992 /* adjust periodics after time jump */ 3515 /* adjust periodics after time jump */
… …
1995 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3518 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1996 3519
1997 if (w->reschedule_cb) 3520 if (w->reschedule_cb)
1998 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3521 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1999 else if (w->interval) 3522 else if (w->interval)
2000 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3523 periodic_recalc (EV_A_ w);
2001 3524
2002 ANHE_at_cache (periodics [i]); 3525 ANHE_at_cache (periodics [i]);
2003 } 3526 }
2004 3527
2005 reheap (periodics, periodiccnt); 3528 reheap (periodics, periodiccnt);
2006} 3529}
2007#endif 3530#endif
2008 3531
2009/* adjust all timers by a given offset */ 3532/* adjust all timers by a given offset */
2010static void noinline 3533ecb_noinline ecb_cold
3534static void
2011timers_reschedule (EV_P_ ev_tstamp adjust) 3535timers_reschedule (EV_P_ ev_tstamp adjust)
2012{ 3536{
2013 int i; 3537 int i;
2014 3538
2015 for (i = 0; i < timercnt; ++i) 3539 for (i = 0; i < timercnt; ++i)
… …
2019 ANHE_at_cache (*he); 3543 ANHE_at_cache (*he);
2020 } 3544 }
2021} 3545}
2022 3546
2023/* fetch new monotonic and realtime times from the kernel */ 3547/* fetch new monotonic and realtime times from the kernel */
2024/* also detetc if there was a timejump, and act accordingly */ 3548/* also detect if there was a timejump, and act accordingly */
2025inline_speed void 3549inline_speed void
2026time_update (EV_P_ ev_tstamp max_block) 3550time_update (EV_P_ ev_tstamp max_block)
2027{ 3551{
2028#if EV_USE_MONOTONIC 3552#if EV_USE_MONOTONIC
2029 if (expect_true (have_monotonic)) 3553 if (ecb_expect_true (have_monotonic))
2030 { 3554 {
2031 int i; 3555 int i;
2032 ev_tstamp odiff = rtmn_diff; 3556 ev_tstamp odiff = rtmn_diff;
2033 3557
2034 mn_now = get_clock (); 3558 mn_now = get_clock ();
2035 3559
2036 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3560 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
2037 /* interpolate in the meantime */ 3561 /* interpolate in the meantime */
2038 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 3562 if (ecb_expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
2039 { 3563 {
2040 ev_rt_now = rtmn_diff + mn_now; 3564 ev_rt_now = rtmn_diff + mn_now;
2041 return; 3565 return;
2042 } 3566 }
2043 3567
… …
2052 * doesn't hurt either as we only do this on time-jumps or 3576 * doesn't hurt either as we only do this on time-jumps or
2053 * in the unlikely event of having been preempted here. 3577 * in the unlikely event of having been preempted here.
2054 */ 3578 */
2055 for (i = 4; --i; ) 3579 for (i = 4; --i; )
2056 { 3580 {
3581 ev_tstamp diff;
2057 rtmn_diff = ev_rt_now - mn_now; 3582 rtmn_diff = ev_rt_now - mn_now;
2058 3583
3584 diff = odiff - rtmn_diff;
3585
2059 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3586 if (ecb_expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2060 return; /* all is well */ 3587 return; /* all is well */
2061 3588
2062 ev_rt_now = ev_time (); 3589 ev_rt_now = ev_time ();
2063 mn_now = get_clock (); 3590 mn_now = get_clock ();
2064 now_floor = mn_now; 3591 now_floor = mn_now;
… …
2073 else 3600 else
2074#endif 3601#endif
2075 { 3602 {
2076 ev_rt_now = ev_time (); 3603 ev_rt_now = ev_time ();
2077 3604
2078 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))
2079 { 3606 {
2080 /* 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 */
2081 timers_reschedule (EV_A_ ev_rt_now - mn_now); 3608 timers_reschedule (EV_A_ ev_rt_now - mn_now);
2082#if EV_PERIODIC_ENABLE 3609#if EV_PERIODIC_ENABLE
2083 periodics_reschedule (EV_A); 3610 periodics_reschedule (EV_A);
… …
2086 3613
2087 mn_now = ev_rt_now; 3614 mn_now = ev_rt_now;
2088 } 3615 }
2089} 3616}
2090 3617
2091void 3618int
2092ev_loop (EV_P_ int flags) 3619ev_run (EV_P_ int flags)
2093{ 3620{
2094#if EV_MINIMAL < 2 3621#if EV_FEATURE_API
2095 ++loop_depth; 3622 ++loop_depth;
2096#endif 3623#endif
2097 3624
2098 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 3625 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2099 3626
2100 loop_done = EVUNLOOP_CANCEL; 3627 loop_done = EVBREAK_CANCEL;
2101 3628
2102 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 3629 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2103 3630
2104 do 3631 do
2105 { 3632 {
2106#if EV_VERIFY >= 2 3633#if EV_VERIFY >= 2
2107 ev_loop_verify (EV_A); 3634 ev_verify (EV_A);
2108#endif 3635#endif
2109 3636
2110#ifndef _WIN32 3637#ifndef _WIN32
2111 if (expect_false (curpid)) /* penalise the forking check even more */ 3638 if (ecb_expect_false (curpid)) /* penalise the forking check even more */
2112 if (expect_false (getpid () != curpid)) 3639 if (ecb_expect_false (getpid () != curpid))
2113 { 3640 {
2114 curpid = getpid (); 3641 curpid = getpid ();
2115 postfork = 1; 3642 postfork = 1;
2116 } 3643 }
2117#endif 3644#endif
2118 3645
2119#if EV_FORK_ENABLE 3646#if EV_FORK_ENABLE
2120 /* we might have forked, so queue fork handlers */ 3647 /* we might have forked, so queue fork handlers */
2121 if (expect_false (postfork)) 3648 if (ecb_expect_false (postfork))
2122 if (forkcnt) 3649 if (forkcnt)
2123 { 3650 {
2124 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3651 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2125 EV_INVOKE_PENDING; 3652 EV_INVOKE_PENDING;
2126 } 3653 }
2127#endif 3654#endif
2128 3655
3656#if EV_PREPARE_ENABLE
2129 /* queue prepare watchers (and execute them) */ 3657 /* queue prepare watchers (and execute them) */
2130 if (expect_false (preparecnt)) 3658 if (ecb_expect_false (preparecnt))
2131 { 3659 {
2132 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3660 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2133 EV_INVOKE_PENDING; 3661 EV_INVOKE_PENDING;
2134 } 3662 }
3663#endif
2135 3664
2136 if (expect_false (loop_done)) 3665 if (ecb_expect_false (loop_done))
2137 break; 3666 break;
2138 3667
2139 /* we might have forked, so reify kernel state if necessary */ 3668 /* we might have forked, so reify kernel state if necessary */
2140 if (expect_false (postfork)) 3669 if (ecb_expect_false (postfork))
2141 loop_fork (EV_A); 3670 loop_fork (EV_A);
2142 3671
2143 /* update fd-related kernel structures */ 3672 /* update fd-related kernel structures */
2144 fd_reify (EV_A); 3673 fd_reify (EV_A);
2145 3674
2146 /* calculate blocking time */ 3675 /* calculate blocking time */
2147 { 3676 {
2148 ev_tstamp waittime = 0.; 3677 ev_tstamp waittime = 0.;
2149 ev_tstamp sleeptime = 0.; 3678 ev_tstamp sleeptime = 0.;
2150 3679
3680 /* remember old timestamp for io_blocktime calculation */
3681 ev_tstamp prev_mn_now = mn_now;
3682
3683 /* update time to cancel out callback processing overhead */
3684 time_update (EV_A_ 1e100);
3685
3686 /* from now on, we want a pipe-wake-up */
3687 pipe_write_wanted = 1;
3688
3689 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3690
2151 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3691 if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2152 { 3692 {
2153 /* remember old timestamp for io_blocktime calculation */
2154 ev_tstamp prev_mn_now = mn_now;
2155
2156 /* update time to cancel out callback processing overhead */
2157 time_update (EV_A_ 1e100);
2158
2159 waittime = MAX_BLOCKTIME; 3693 waittime = MAX_BLOCKTIME;
2160 3694
2161 if (timercnt) 3695 if (timercnt)
2162 { 3696 {
2163 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3697 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2164 if (waittime > to) waittime = to; 3698 if (waittime > to) waittime = to;
2165 } 3699 }
2166 3700
2167#if EV_PERIODIC_ENABLE 3701#if EV_PERIODIC_ENABLE
2168 if (periodiccnt) 3702 if (periodiccnt)
2169 { 3703 {
2170 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3704 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2171 if (waittime > to) waittime = to; 3705 if (waittime > to) waittime = to;
2172 } 3706 }
2173#endif 3707#endif
2174 3708
2175 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3709 /* don't let timeouts decrease the waittime below timeout_blocktime */
2176 if (expect_false (waittime < timeout_blocktime)) 3710 if (ecb_expect_false (waittime < timeout_blocktime))
2177 waittime = timeout_blocktime; 3711 waittime = timeout_blocktime;
2178 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
2179 /* extra check because io_blocktime is commonly 0 */ 3718 /* extra check because io_blocktime is commonly 0 */
2180 if (expect_false (io_blocktime)) 3719 if (ecb_expect_false (io_blocktime))
2181 { 3720 {
2182 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3721 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2183 3722
2184 if (sleeptime > waittime - backend_fudge) 3723 if (sleeptime > waittime - backend_mintime)
2185 sleeptime = waittime - backend_fudge; 3724 sleeptime = waittime - backend_mintime;
2186 3725
2187 if (expect_true (sleeptime > 0.)) 3726 if (ecb_expect_true (sleeptime > 0.))
2188 { 3727 {
2189 ev_sleep (sleeptime); 3728 ev_sleep (sleeptime);
2190 waittime -= sleeptime; 3729 waittime -= sleeptime;
2191 } 3730 }
2192 } 3731 }
2193 } 3732 }
2194 3733
2195#if EV_MINIMAL < 2 3734#if EV_FEATURE_API
2196 ++loop_count; 3735 ++loop_count;
2197#endif 3736#endif
2198 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3737 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2199 backend_poll (EV_A_ waittime); 3738 backend_poll (EV_A_ waittime);
2200 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 3739 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3740
3741 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3742
3743 ECB_MEMORY_FENCE_ACQUIRE;
3744 if (pipe_write_skipped)
3745 {
3746 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3747 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3748 }
2201 3749
2202 /* update ev_rt_now, do magic */ 3750 /* update ev_rt_now, do magic */
2203 time_update (EV_A_ waittime + sleeptime); 3751 time_update (EV_A_ waittime + sleeptime);
2204 } 3752 }
2205 3753
… …
2212#if EV_IDLE_ENABLE 3760#if EV_IDLE_ENABLE
2213 /* queue idle watchers unless other events are pending */ 3761 /* queue idle watchers unless other events are pending */
2214 idle_reify (EV_A); 3762 idle_reify (EV_A);
2215#endif 3763#endif
2216 3764
3765#if EV_CHECK_ENABLE
2217 /* queue check watchers, to be executed first */ 3766 /* queue check watchers, to be executed first */
2218 if (expect_false (checkcnt)) 3767 if (ecb_expect_false (checkcnt))
2219 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3768 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3769#endif
2220 3770
2221 EV_INVOKE_PENDING; 3771 EV_INVOKE_PENDING;
2222 } 3772 }
2223 while (expect_true ( 3773 while (ecb_expect_true (
2224 activecnt 3774 activecnt
2225 && !loop_done 3775 && !loop_done
2226 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3776 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2227 )); 3777 ));
2228 3778
2229 if (loop_done == EVUNLOOP_ONE) 3779 if (loop_done == EVBREAK_ONE)
2230 loop_done = EVUNLOOP_CANCEL; 3780 loop_done = EVBREAK_CANCEL;
2231 3781
2232#if EV_MINIMAL < 2 3782#if EV_FEATURE_API
2233 --loop_depth; 3783 --loop_depth;
2234#endif 3784#endif
2235}
2236 3785
3786 return activecnt;
3787}
3788
2237void 3789void
2238ev_unloop (EV_P_ int how) 3790ev_break (EV_P_ int how) EV_NOEXCEPT
2239{ 3791{
2240 loop_done = how; 3792 loop_done = how;
2241} 3793}
2242 3794
2243void 3795void
2244ev_ref (EV_P) 3796ev_ref (EV_P) EV_NOEXCEPT
2245{ 3797{
2246 ++activecnt; 3798 ++activecnt;
2247} 3799}
2248 3800
2249void 3801void
2250ev_unref (EV_P) 3802ev_unref (EV_P) EV_NOEXCEPT
2251{ 3803{
2252 --activecnt; 3804 --activecnt;
2253} 3805}
2254 3806
2255void 3807void
2256ev_now_update (EV_P) 3808ev_now_update (EV_P) EV_NOEXCEPT
2257{ 3809{
2258 time_update (EV_A_ 1e100); 3810 time_update (EV_A_ 1e100);
2259} 3811}
2260 3812
2261void 3813void
2262ev_suspend (EV_P) 3814ev_suspend (EV_P) EV_NOEXCEPT
2263{ 3815{
2264 ev_now_update (EV_A); 3816 ev_now_update (EV_A);
2265} 3817}
2266 3818
2267void 3819void
2268ev_resume (EV_P) 3820ev_resume (EV_P) EV_NOEXCEPT
2269{ 3821{
2270 ev_tstamp mn_prev = mn_now; 3822 ev_tstamp mn_prev = mn_now;
2271 3823
2272 ev_now_update (EV_A); 3824 ev_now_update (EV_A);
2273 timers_reschedule (EV_A_ mn_now - mn_prev); 3825 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2290inline_size void 3842inline_size void
2291wlist_del (WL *head, WL elem) 3843wlist_del (WL *head, WL elem)
2292{ 3844{
2293 while (*head) 3845 while (*head)
2294 { 3846 {
2295 if (*head == elem) 3847 if (ecb_expect_true (*head == elem))
2296 { 3848 {
2297 *head = elem->next; 3849 *head = elem->next;
2298 return; 3850 break;
2299 } 3851 }
2300 3852
2301 head = &(*head)->next; 3853 head = &(*head)->next;
2302 } 3854 }
2303} 3855}
… …
2312 w->pending = 0; 3864 w->pending = 0;
2313 } 3865 }
2314} 3866}
2315 3867
2316int 3868int
2317ev_clear_pending (EV_P_ void *w) 3869ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
2318{ 3870{
2319 W w_ = (W)w; 3871 W w_ = (W)w;
2320 int pending = w_->pending; 3872 int pending = w_->pending;
2321 3873
2322 if (expect_true (pending)) 3874 if (ecb_expect_true (pending))
2323 { 3875 {
2324 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 3876 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2325 p->w = (W)&pending_w; 3877 p->w = (W)&pending_w;
2326 w_->pending = 0; 3878 w_->pending = 0;
2327 return p->events; 3879 return p->events;
… …
2354 w->active = 0; 3906 w->active = 0;
2355} 3907}
2356 3908
2357/*****************************************************************************/ 3909/*****************************************************************************/
2358 3910
2359void noinline 3911ecb_noinline
3912void
2360ev_io_start (EV_P_ ev_io *w) 3913ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
2361{ 3914{
2362 int fd = w->fd; 3915 int fd = w->fd;
2363 3916
2364 if (expect_false (ev_is_active (w))) 3917 if (ecb_expect_false (ev_is_active (w)))
2365 return; 3918 return;
2366 3919
2367 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 3920 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2368 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 3921 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2369 3922
3923#if EV_VERIFY >= 2
3924 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
3925#endif
2370 EV_FREQUENT_CHECK; 3926 EV_FREQUENT_CHECK;
2371 3927
2372 ev_start (EV_A_ (W)w, 1); 3928 ev_start (EV_A_ (W)w, 1);
2373 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3929 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
2374 wlist_add (&anfds[fd].head, (WL)w); 3930 wlist_add (&anfds[fd].head, (WL)w);
3931
3932 /* common bug, apparently */
3933 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
2375 3934
2376 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3935 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2377 w->events &= ~EV__IOFDSET; 3936 w->events &= ~EV__IOFDSET;
2378 3937
2379 EV_FREQUENT_CHECK; 3938 EV_FREQUENT_CHECK;
2380} 3939}
2381 3940
2382void noinline 3941ecb_noinline
3942void
2383ev_io_stop (EV_P_ ev_io *w) 3943ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
2384{ 3944{
2385 clear_pending (EV_A_ (W)w); 3945 clear_pending (EV_A_ (W)w);
2386 if (expect_false (!ev_is_active (w))) 3946 if (ecb_expect_false (!ev_is_active (w)))
2387 return; 3947 return;
2388 3948
2389 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));
2390 3950
3951#if EV_VERIFY >= 2
3952 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
3953#endif
2391 EV_FREQUENT_CHECK; 3954 EV_FREQUENT_CHECK;
2392 3955
2393 wlist_del (&anfds[w->fd].head, (WL)w); 3956 wlist_del (&anfds[w->fd].head, (WL)w);
2394 ev_stop (EV_A_ (W)w); 3957 ev_stop (EV_A_ (W)w);
2395 3958
2396 fd_change (EV_A_ w->fd, 1); 3959 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2397 3960
2398 EV_FREQUENT_CHECK; 3961 EV_FREQUENT_CHECK;
2399} 3962}
2400 3963
2401void noinline 3964ecb_noinline
3965void
2402ev_timer_start (EV_P_ ev_timer *w) 3966ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
2403{ 3967{
2404 if (expect_false (ev_is_active (w))) 3968 if (ecb_expect_false (ev_is_active (w)))
2405 return; 3969 return;
2406 3970
2407 ev_at (w) += mn_now; 3971 ev_at (w) += mn_now;
2408 3972
2409 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.));
2410 3974
2411 EV_FREQUENT_CHECK; 3975 EV_FREQUENT_CHECK;
2412 3976
2413 ++timercnt; 3977 ++timercnt;
2414 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 3978 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
2415 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 3979 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
2416 ANHE_w (timers [ev_active (w)]) = (WT)w; 3980 ANHE_w (timers [ev_active (w)]) = (WT)w;
2417 ANHE_at_cache (timers [ev_active (w)]); 3981 ANHE_at_cache (timers [ev_active (w)]);
2418 upheap (timers, ev_active (w)); 3982 upheap (timers, ev_active (w));
2419 3983
2420 EV_FREQUENT_CHECK; 3984 EV_FREQUENT_CHECK;
2421 3985
2422 /*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));*/
2423} 3987}
2424 3988
2425void noinline 3989ecb_noinline
3990void
2426ev_timer_stop (EV_P_ ev_timer *w) 3991ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
2427{ 3992{
2428 clear_pending (EV_A_ (W)w); 3993 clear_pending (EV_A_ (W)w);
2429 if (expect_false (!ev_is_active (w))) 3994 if (ecb_expect_false (!ev_is_active (w)))
2430 return; 3995 return;
2431 3996
2432 EV_FREQUENT_CHECK; 3997 EV_FREQUENT_CHECK;
2433 3998
2434 { 3999 {
… …
2436 4001
2437 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));
2438 4003
2439 --timercnt; 4004 --timercnt;
2440 4005
2441 if (expect_true (active < timercnt + HEAP0)) 4006 if (ecb_expect_true (active < timercnt + HEAP0))
2442 { 4007 {
2443 timers [active] = timers [timercnt + HEAP0]; 4008 timers [active] = timers [timercnt + HEAP0];
2444 adjustheap (timers, timercnt, active); 4009 adjustheap (timers, timercnt, active);
2445 } 4010 }
2446 } 4011 }
2447 4012
2448 EV_FREQUENT_CHECK;
2449
2450 ev_at (w) -= mn_now; 4013 ev_at (w) -= mn_now;
2451 4014
2452 ev_stop (EV_A_ (W)w); 4015 ev_stop (EV_A_ (W)w);
2453}
2454 4016
2455void noinline 4017 EV_FREQUENT_CHECK;
4018}
4019
4020ecb_noinline
4021void
2456ev_timer_again (EV_P_ ev_timer *w) 4022ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
2457{ 4023{
2458 EV_FREQUENT_CHECK; 4024 EV_FREQUENT_CHECK;
4025
4026 clear_pending (EV_A_ (W)w);
2459 4027
2460 if (ev_is_active (w)) 4028 if (ev_is_active (w))
2461 { 4029 {
2462 if (w->repeat) 4030 if (w->repeat)
2463 { 4031 {
… …
2475 } 4043 }
2476 4044
2477 EV_FREQUENT_CHECK; 4045 EV_FREQUENT_CHECK;
2478} 4046}
2479 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
2480#if EV_PERIODIC_ENABLE 4054#if EV_PERIODIC_ENABLE
2481void noinline 4055ecb_noinline
4056void
2482ev_periodic_start (EV_P_ ev_periodic *w) 4057ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
2483{ 4058{
2484 if (expect_false (ev_is_active (w))) 4059 if (ecb_expect_false (ev_is_active (w)))
2485 return; 4060 return;
2486 4061
2487 if (w->reschedule_cb) 4062 if (w->reschedule_cb)
2488 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4063 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2489 else if (w->interval) 4064 else if (w->interval)
2490 { 4065 {
2491 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.));
2492 /* this formula differs from the one in periodic_reify because we do not always round up */ 4067 periodic_recalc (EV_A_ w);
2493 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2494 } 4068 }
2495 else 4069 else
2496 ev_at (w) = w->offset; 4070 ev_at (w) = w->offset;
2497 4071
2498 EV_FREQUENT_CHECK; 4072 EV_FREQUENT_CHECK;
2499 4073
2500 ++periodiccnt; 4074 ++periodiccnt;
2501 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4075 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2502 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4076 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
2503 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4077 ANHE_w (periodics [ev_active (w)]) = (WT)w;
2504 ANHE_at_cache (periodics [ev_active (w)]); 4078 ANHE_at_cache (periodics [ev_active (w)]);
2505 upheap (periodics, ev_active (w)); 4079 upheap (periodics, ev_active (w));
2506 4080
2507 EV_FREQUENT_CHECK; 4081 EV_FREQUENT_CHECK;
2508 4082
2509 /*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));*/
2510} 4084}
2511 4085
2512void noinline 4086ecb_noinline
4087void
2513ev_periodic_stop (EV_P_ ev_periodic *w) 4088ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
2514{ 4089{
2515 clear_pending (EV_A_ (W)w); 4090 clear_pending (EV_A_ (W)w);
2516 if (expect_false (!ev_is_active (w))) 4091 if (ecb_expect_false (!ev_is_active (w)))
2517 return; 4092 return;
2518 4093
2519 EV_FREQUENT_CHECK; 4094 EV_FREQUENT_CHECK;
2520 4095
2521 { 4096 {
… …
2523 4098
2524 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));
2525 4100
2526 --periodiccnt; 4101 --periodiccnt;
2527 4102
2528 if (expect_true (active < periodiccnt + HEAP0)) 4103 if (ecb_expect_true (active < periodiccnt + HEAP0))
2529 { 4104 {
2530 periodics [active] = periodics [periodiccnt + HEAP0]; 4105 periodics [active] = periodics [periodiccnt + HEAP0];
2531 adjustheap (periodics, periodiccnt, active); 4106 adjustheap (periodics, periodiccnt, active);
2532 } 4107 }
2533 } 4108 }
2534 4109
2535 EV_FREQUENT_CHECK;
2536
2537 ev_stop (EV_A_ (W)w); 4110 ev_stop (EV_A_ (W)w);
2538}
2539 4111
2540void noinline 4112 EV_FREQUENT_CHECK;
4113}
4114
4115ecb_noinline
4116void
2541ev_periodic_again (EV_P_ ev_periodic *w) 4117ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
2542{ 4118{
2543 /* TODO: use adjustheap and recalculation */ 4119 /* TODO: use adjustheap and recalculation */
2544 ev_periodic_stop (EV_A_ w); 4120 ev_periodic_stop (EV_A_ w);
2545 ev_periodic_start (EV_A_ w); 4121 ev_periodic_start (EV_A_ w);
2546} 4122}
… …
2548 4124
2549#ifndef SA_RESTART 4125#ifndef SA_RESTART
2550# define SA_RESTART 0 4126# define SA_RESTART 0
2551#endif 4127#endif
2552 4128
2553void noinline 4129#if EV_SIGNAL_ENABLE
4130
4131ecb_noinline
4132void
2554ev_signal_start (EV_P_ ev_signal *w) 4133ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
2555{ 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
2556#if EV_MULTIPLICITY 4140#if EV_MULTIPLICITY
2557 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",
2558#endif 4142 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2559 if (expect_false (ev_is_active (w)))
2560 return;
2561 4143
2562 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
2563 4147
2564 evpipe_init (EV_A);
2565
2566 EV_FREQUENT_CHECK; 4148 EV_FREQUENT_CHECK;
2567 4149
4150#if EV_USE_SIGNALFD
4151 if (sigfd == -2)
2568 { 4152 {
2569#ifndef _WIN32 4153 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2570 sigset_t full, prev; 4154 if (sigfd < 0 && errno == EINVAL)
2571 sigfillset (&full); 4155 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2572 sigprocmask (SIG_SETMASK, &full, &prev);
2573#endif
2574 4156
2575 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 */
2576 4160
2577#ifndef _WIN32 4161 sigemptyset (&sigfd_set);
2578 sigprocmask (SIG_SETMASK, &prev, 0); 4162
2579#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 }
2580 } 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
2581 4179
2582 ev_start (EV_A_ (W)w, 1); 4180 ev_start (EV_A_ (W)w, 1);
2583 wlist_add (&signals [w->signum - 1].head, (WL)w); 4181 wlist_add (&signals [w->signum - 1].head, (WL)w);
2584 4182
2585 if (!((WL)w)->next) 4183 if (!((WL)w)->next)
4184# if EV_USE_SIGNALFD
4185 if (sigfd < 0) /*TODO*/
4186# endif
2586 { 4187 {
2587#if _WIN32 4188# ifdef _WIN32
4189 evpipe_init (EV_A);
4190
2588 signal (w->signum, ev_sighandler); 4191 signal (w->signum, ev_sighandler);
2589#else 4192# else
2590 struct sigaction sa = { }; 4193 struct sigaction sa;
4194
4195 evpipe_init (EV_A);
4196
2591 sa.sa_handler = ev_sighandler; 4197 sa.sa_handler = ev_sighandler;
2592 sigfillset (&sa.sa_mask); 4198 sigfillset (&sa.sa_mask);
2593 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 */
2594 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 }
2595#endif 4208#endif
2596 } 4209 }
2597 4210
2598 EV_FREQUENT_CHECK; 4211 EV_FREQUENT_CHECK;
2599} 4212}
2600 4213
2601void noinline 4214ecb_noinline
4215void
2602ev_signal_stop (EV_P_ ev_signal *w) 4216ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
2603{ 4217{
2604 clear_pending (EV_A_ (W)w); 4218 clear_pending (EV_A_ (W)w);
2605 if (expect_false (!ev_is_active (w))) 4219 if (ecb_expect_false (!ev_is_active (w)))
2606 return; 4220 return;
2607 4221
2608 EV_FREQUENT_CHECK; 4222 EV_FREQUENT_CHECK;
2609 4223
2610 wlist_del (&signals [w->signum - 1].head, (WL)w); 4224 wlist_del (&signals [w->signum - 1].head, (WL)w);
2611 ev_stop (EV_A_ (W)w); 4225 ev_stop (EV_A_ (W)w);
2612 4226
2613 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
2614 signal (w->signum, SIG_DFL); 4246 signal (w->signum, SIG_DFL);
4247 }
2615 4248
2616 EV_FREQUENT_CHECK; 4249 EV_FREQUENT_CHECK;
2617} 4250}
2618 4251
4252#endif
4253
4254#if EV_CHILD_ENABLE
4255
2619void 4256void
2620ev_child_start (EV_P_ ev_child *w) 4257ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
2621{ 4258{
2622#if EV_MULTIPLICITY 4259#if EV_MULTIPLICITY
2623 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));
2624#endif 4261#endif
2625 if (expect_false (ev_is_active (w))) 4262 if (ecb_expect_false (ev_is_active (w)))
2626 return; 4263 return;
2627 4264
2628 EV_FREQUENT_CHECK; 4265 EV_FREQUENT_CHECK;
2629 4266
2630 ev_start (EV_A_ (W)w, 1); 4267 ev_start (EV_A_ (W)w, 1);
2631 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4268 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2632 4269
2633 EV_FREQUENT_CHECK; 4270 EV_FREQUENT_CHECK;
2634} 4271}
2635 4272
2636void 4273void
2637ev_child_stop (EV_P_ ev_child *w) 4274ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
2638{ 4275{
2639 clear_pending (EV_A_ (W)w); 4276 clear_pending (EV_A_ (W)w);
2640 if (expect_false (!ev_is_active (w))) 4277 if (ecb_expect_false (!ev_is_active (w)))
2641 return; 4278 return;
2642 4279
2643 EV_FREQUENT_CHECK; 4280 EV_FREQUENT_CHECK;
2644 4281
2645 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4282 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2646 ev_stop (EV_A_ (W)w); 4283 ev_stop (EV_A_ (W)w);
2647 4284
2648 EV_FREQUENT_CHECK; 4285 EV_FREQUENT_CHECK;
2649} 4286}
4287
4288#endif
2650 4289
2651#if EV_STAT_ENABLE 4290#if EV_STAT_ENABLE
2652 4291
2653# ifdef _WIN32 4292# ifdef _WIN32
2654# undef lstat 4293# undef lstat
… …
2657 4296
2658#define DEF_STAT_INTERVAL 5.0074891 4297#define DEF_STAT_INTERVAL 5.0074891
2659#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4298#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2660#define MIN_STAT_INTERVAL 0.1074891 4299#define MIN_STAT_INTERVAL 0.1074891
2661 4300
2662static 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);
2663 4302
2664#if EV_USE_INOTIFY 4303#if EV_USE_INOTIFY
2665# define EV_INOTIFY_BUFSIZE 8192
2666 4304
2667static 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
2668infy_add (EV_P_ ev_stat *w) 4310infy_add (EV_P_ ev_stat *w)
2669{ 4311{
2670 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); 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);
2671 4316
2672 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 */
2673 { 4343 }
4344 else
4345 {
4346 /* can't use inotify, continue to stat */
2674 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4347 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2675 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2676 4348
2677 /* monitor some parent directory for speedup hints */ 4349 /* if path is not there, monitor some parent directory for speedup hints */
2678 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 4350 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2679 /* but an efficiency issue only */ 4351 /* but an efficiency issue only */
2680 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 4352 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2681 { 4353 {
2682 char path [4096]; 4354 char path [4096];
… …
2692 if (!pend || pend == path) 4364 if (!pend || pend == path)
2693 break; 4365 break;
2694 4366
2695 *pend = 0; 4367 *pend = 0;
2696 w->wd = inotify_add_watch (fs_fd, path, mask); 4368 w->wd = inotify_add_watch (fs_fd, path, mask);
2697 } 4369 }
2698 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 4370 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2699 } 4371 }
2700 } 4372 }
2701 4373
2702 if (w->wd >= 0) 4374 if (w->wd >= 0)
2703 {
2704 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);
2705 4376
2706 /* now local changes will be tracked by inotify, but remote changes won't */ 4377 /* now re-arm timer, if required */
2707 /* unless the filesystem it known to be local, we therefore still poll */ 4378 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2708 /* also do poll on <2.6.25, but with normal frequency */
2709 struct statfs sfs;
2710
2711 if (fs_2625 && !statfs (w->path, &sfs))
2712 if (sfs.f_type == 0x1373 /* devfs */
2713 || sfs.f_type == 0xEF53 /* ext2/3 */
2714 || sfs.f_type == 0x3153464a /* jfs */
2715 || sfs.f_type == 0x52654973 /* reiser3 */
2716 || sfs.f_type == 0x01021994 /* tempfs */
2717 || sfs.f_type == 0x58465342 /* xfs */)
2718 return;
2719
2720 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2721 ev_timer_again (EV_A_ &w->timer); 4379 ev_timer_again (EV_A_ &w->timer);
2722 } 4380 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2723} 4381}
2724 4382
2725static void noinline 4383ecb_noinline
4384static void
2726infy_del (EV_P_ ev_stat *w) 4385infy_del (EV_P_ ev_stat *w)
2727{ 4386{
2728 int slot; 4387 int slot;
2729 int wd = w->wd; 4388 int wd = w->wd;
2730 4389
2731 if (wd < 0) 4390 if (wd < 0)
2732 return; 4391 return;
2733 4392
2734 w->wd = -2; 4393 w->wd = -2;
2735 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 4394 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2736 wlist_del (&fs_hash [slot].head, (WL)w); 4395 wlist_del (&fs_hash [slot].head, (WL)w);
2737 4396
2738 /* remove this watcher, if others are watching it, they will rearm */ 4397 /* remove this watcher, if others are watching it, they will rearm */
2739 inotify_rm_watch (fs_fd, wd); 4398 inotify_rm_watch (fs_fd, wd);
2740} 4399}
2741 4400
2742static void noinline 4401ecb_noinline
4402static void
2743infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4403infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2744{ 4404{
2745 if (slot < 0) 4405 if (slot < 0)
2746 /* overflow, need to check for all hash slots */ 4406 /* overflow, need to check for all hash slots */
2747 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4407 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2748 infy_wd (EV_A_ slot, wd, ev); 4408 infy_wd (EV_A_ slot, wd, ev);
2749 else 4409 else
2750 { 4410 {
2751 WL w_; 4411 WL w_;
2752 4412
2753 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 4413 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2754 { 4414 {
2755 ev_stat *w = (ev_stat *)w_; 4415 ev_stat *w = (ev_stat *)w_;
2756 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 */
2757 4417
2758 if (w->wd == wd || wd == -1) 4418 if (w->wd == wd || wd == -1)
2759 { 4419 {
2760 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 4420 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2761 { 4421 {
2762 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);
2763 w->wd = -1; 4423 w->wd = -1;
2764 infy_add (EV_A_ w); /* re-add, no matter what */ 4424 infy_add (EV_A_ w); /* re-add, no matter what */
2765 } 4425 }
2766 4426
2767 stat_timer_cb (EV_A_ &w->timer, 0); 4427 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2772 4432
2773static void 4433static void
2774infy_cb (EV_P_ ev_io *w, int revents) 4434infy_cb (EV_P_ ev_io *w, int revents)
2775{ 4435{
2776 char buf [EV_INOTIFY_BUFSIZE]; 4436 char buf [EV_INOTIFY_BUFSIZE];
2777 struct inotify_event *ev = (struct inotify_event *)buf;
2778 int ofs; 4437 int ofs;
2779 int len = read (fs_fd, buf, sizeof (buf)); 4438 int len = read (fs_fd, buf, sizeof (buf));
2780 4439
2781 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);
2782 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 }
2783} 4446}
2784 4447
2785inline_size void 4448inline_size ecb_cold
4449void
2786check_2625 (EV_P) 4450ev_check_2625 (EV_P)
2787{ 4451{
2788 /* kernels < 2.6.25 are borked 4452 /* kernels < 2.6.25 are borked
2789 * 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
2790 */ 4454 */
2791 struct utsname buf; 4455 if (ev_linux_version () < 0x020619)
2792 int major, minor, micro;
2793
2794 if (uname (&buf))
2795 return; 4456 return;
2796 4457
2797 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2798 return;
2799
2800 if (major < 2
2801 || (major == 2 && minor < 6)
2802 || (major == 2 && minor == 6 && micro < 25))
2803 return;
2804
2805 fs_2625 = 1; 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 ();
2806} 4470}
2807 4471
2808inline_size void 4472inline_size void
2809infy_init (EV_P) 4473infy_init (EV_P)
2810{ 4474{
2811 if (fs_fd != -2) 4475 if (fs_fd != -2)
2812 return; 4476 return;
2813 4477
2814 fs_fd = -1; 4478 fs_fd = -1;
2815 4479
2816 check_2625 (EV_A); 4480 ev_check_2625 (EV_A);
2817 4481
2818 fs_fd = inotify_init (); 4482 fs_fd = infy_newfd ();
2819 4483
2820 if (fs_fd >= 0) 4484 if (fs_fd >= 0)
2821 { 4485 {
4486 fd_intern (fs_fd);
2822 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 4487 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2823 ev_set_priority (&fs_w, EV_MAXPRI); 4488 ev_set_priority (&fs_w, EV_MAXPRI);
2824 ev_io_start (EV_A_ &fs_w); 4489 ev_io_start (EV_A_ &fs_w);
4490 ev_unref (EV_A);
2825 } 4491 }
2826} 4492}
2827 4493
2828inline_size void 4494inline_size void
2829infy_fork (EV_P) 4495infy_fork (EV_P)
… …
2831 int slot; 4497 int slot;
2832 4498
2833 if (fs_fd < 0) 4499 if (fs_fd < 0)
2834 return; 4500 return;
2835 4501
4502 ev_ref (EV_A);
4503 ev_io_stop (EV_A_ &fs_w);
2836 close (fs_fd); 4504 close (fs_fd);
2837 fs_fd = inotify_init (); 4505 fs_fd = infy_newfd ();
2838 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
2839 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4515 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2840 { 4516 {
2841 WL w_ = fs_hash [slot].head; 4517 WL w_ = fs_hash [slot].head;
2842 fs_hash [slot].head = 0; 4518 fs_hash [slot].head = 0;
2843 4519
2844 while (w_) 4520 while (w_)
… …
2849 w->wd = -1; 4525 w->wd = -1;
2850 4526
2851 if (fs_fd >= 0) 4527 if (fs_fd >= 0)
2852 infy_add (EV_A_ w); /* re-add, no matter what */ 4528 infy_add (EV_A_ w); /* re-add, no matter what */
2853 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);
2854 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 }
2855 } 4536 }
2856 } 4537 }
2857} 4538}
2858 4539
2859#endif 4540#endif
… …
2863#else 4544#else
2864# define EV_LSTAT(p,b) lstat (p, b) 4545# define EV_LSTAT(p,b) lstat (p, b)
2865#endif 4546#endif
2866 4547
2867void 4548void
2868ev_stat_stat (EV_P_ ev_stat *w) 4549ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
2869{ 4550{
2870 if (lstat (w->path, &w->attr) < 0) 4551 if (lstat (w->path, &w->attr) < 0)
2871 w->attr.st_nlink = 0; 4552 w->attr.st_nlink = 0;
2872 else if (!w->attr.st_nlink) 4553 else if (!w->attr.st_nlink)
2873 w->attr.st_nlink = 1; 4554 w->attr.st_nlink = 1;
2874} 4555}
2875 4556
2876static void noinline 4557ecb_noinline
4558static void
2877stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4559stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2878{ 4560{
2879 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4561 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2880 4562
2881 /* we copy this here each the time so that */ 4563 ev_statdata prev = w->attr;
2882 /* prev has the old value when the callback gets invoked */
2883 w->prev = w->attr;
2884 ev_stat_stat (EV_A_ w); 4564 ev_stat_stat (EV_A_ w);
2885 4565
2886 /* 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 */
2887 if ( 4567 if (
2888 w->prev.st_dev != w->attr.st_dev 4568 prev.st_dev != w->attr.st_dev
2889 || w->prev.st_ino != w->attr.st_ino 4569 || prev.st_ino != w->attr.st_ino
2890 || w->prev.st_mode != w->attr.st_mode 4570 || prev.st_mode != w->attr.st_mode
2891 || w->prev.st_nlink != w->attr.st_nlink 4571 || prev.st_nlink != w->attr.st_nlink
2892 || w->prev.st_uid != w->attr.st_uid 4572 || prev.st_uid != w->attr.st_uid
2893 || w->prev.st_gid != w->attr.st_gid 4573 || prev.st_gid != w->attr.st_gid
2894 || w->prev.st_rdev != w->attr.st_rdev 4574 || prev.st_rdev != w->attr.st_rdev
2895 || w->prev.st_size != w->attr.st_size 4575 || prev.st_size != w->attr.st_size
2896 || w->prev.st_atime != w->attr.st_atime 4576 || prev.st_atime != w->attr.st_atime
2897 || w->prev.st_mtime != w->attr.st_mtime 4577 || prev.st_mtime != w->attr.st_mtime
2898 || w->prev.st_ctime != w->attr.st_ctime 4578 || prev.st_ctime != w->attr.st_ctime
2899 ) { 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
2900 #if EV_USE_INOTIFY 4585 #if EV_USE_INOTIFY
2901 if (fs_fd >= 0) 4586 if (fs_fd >= 0)
2902 { 4587 {
2903 infy_del (EV_A_ w); 4588 infy_del (EV_A_ w);
2904 infy_add (EV_A_ w); 4589 infy_add (EV_A_ w);
… …
2909 ev_feed_event (EV_A_ w, EV_STAT); 4594 ev_feed_event (EV_A_ w, EV_STAT);
2910 } 4595 }
2911} 4596}
2912 4597
2913void 4598void
2914ev_stat_start (EV_P_ ev_stat *w) 4599ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
2915{ 4600{
2916 if (expect_false (ev_is_active (w))) 4601 if (ecb_expect_false (ev_is_active (w)))
2917 return; 4602 return;
2918 4603
2919 ev_stat_stat (EV_A_ w); 4604 ev_stat_stat (EV_A_ w);
2920 4605
2921 if (w->interval < MIN_STAT_INTERVAL && w->interval) 4606 if (w->interval < MIN_STAT_INTERVAL && w->interval)
… …
2929 4614
2930 if (fs_fd >= 0) 4615 if (fs_fd >= 0)
2931 infy_add (EV_A_ w); 4616 infy_add (EV_A_ w);
2932 else 4617 else
2933#endif 4618#endif
4619 {
2934 ev_timer_again (EV_A_ &w->timer); 4620 ev_timer_again (EV_A_ &w->timer);
4621 ev_unref (EV_A);
4622 }
2935 4623
2936 ev_start (EV_A_ (W)w, 1); 4624 ev_start (EV_A_ (W)w, 1);
2937 4625
2938 EV_FREQUENT_CHECK; 4626 EV_FREQUENT_CHECK;
2939} 4627}
2940 4628
2941void 4629void
2942ev_stat_stop (EV_P_ ev_stat *w) 4630ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
2943{ 4631{
2944 clear_pending (EV_A_ (W)w); 4632 clear_pending (EV_A_ (W)w);
2945 if (expect_false (!ev_is_active (w))) 4633 if (ecb_expect_false (!ev_is_active (w)))
2946 return; 4634 return;
2947 4635
2948 EV_FREQUENT_CHECK; 4636 EV_FREQUENT_CHECK;
2949 4637
2950#if EV_USE_INOTIFY 4638#if EV_USE_INOTIFY
2951 infy_del (EV_A_ w); 4639 infy_del (EV_A_ w);
2952#endif 4640#endif
4641
4642 if (ev_is_active (&w->timer))
4643 {
4644 ev_ref (EV_A);
2953 ev_timer_stop (EV_A_ &w->timer); 4645 ev_timer_stop (EV_A_ &w->timer);
4646 }
2954 4647
2955 ev_stop (EV_A_ (W)w); 4648 ev_stop (EV_A_ (W)w);
2956 4649
2957 EV_FREQUENT_CHECK; 4650 EV_FREQUENT_CHECK;
2958} 4651}
2959#endif 4652#endif
2960 4653
2961#if EV_IDLE_ENABLE 4654#if EV_IDLE_ENABLE
2962void 4655void
2963ev_idle_start (EV_P_ ev_idle *w) 4656ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
2964{ 4657{
2965 if (expect_false (ev_is_active (w))) 4658 if (ecb_expect_false (ev_is_active (w)))
2966 return; 4659 return;
2967 4660
2968 pri_adjust (EV_A_ (W)w); 4661 pri_adjust (EV_A_ (W)w);
2969 4662
2970 EV_FREQUENT_CHECK; 4663 EV_FREQUENT_CHECK;
… …
2973 int active = ++idlecnt [ABSPRI (w)]; 4666 int active = ++idlecnt [ABSPRI (w)];
2974 4667
2975 ++idleall; 4668 ++idleall;
2976 ev_start (EV_A_ (W)w, active); 4669 ev_start (EV_A_ (W)w, active);
2977 4670
2978 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);
2979 idles [ABSPRI (w)][active - 1] = w; 4672 idles [ABSPRI (w)][active - 1] = w;
2980 } 4673 }
2981 4674
2982 EV_FREQUENT_CHECK; 4675 EV_FREQUENT_CHECK;
2983} 4676}
2984 4677
2985void 4678void
2986ev_idle_stop (EV_P_ ev_idle *w) 4679ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
2987{ 4680{
2988 clear_pending (EV_A_ (W)w); 4681 clear_pending (EV_A_ (W)w);
2989 if (expect_false (!ev_is_active (w))) 4682 if (ecb_expect_false (!ev_is_active (w)))
2990 return; 4683 return;
2991 4684
2992 EV_FREQUENT_CHECK; 4685 EV_FREQUENT_CHECK;
2993 4686
2994 { 4687 {
… …
3003 4696
3004 EV_FREQUENT_CHECK; 4697 EV_FREQUENT_CHECK;
3005} 4698}
3006#endif 4699#endif
3007 4700
4701#if EV_PREPARE_ENABLE
3008void 4702void
3009ev_prepare_start (EV_P_ ev_prepare *w) 4703ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
3010{ 4704{
3011 if (expect_false (ev_is_active (w))) 4705 if (ecb_expect_false (ev_is_active (w)))
3012 return; 4706 return;
3013 4707
3014 EV_FREQUENT_CHECK; 4708 EV_FREQUENT_CHECK;
3015 4709
3016 ev_start (EV_A_ (W)w, ++preparecnt); 4710 ev_start (EV_A_ (W)w, ++preparecnt);
3017 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4711 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
3018 prepares [preparecnt - 1] = w; 4712 prepares [preparecnt - 1] = w;
3019 4713
3020 EV_FREQUENT_CHECK; 4714 EV_FREQUENT_CHECK;
3021} 4715}
3022 4716
3023void 4717void
3024ev_prepare_stop (EV_P_ ev_prepare *w) 4718ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
3025{ 4719{
3026 clear_pending (EV_A_ (W)w); 4720 clear_pending (EV_A_ (W)w);
3027 if (expect_false (!ev_is_active (w))) 4721 if (ecb_expect_false (!ev_is_active (w)))
3028 return; 4722 return;
3029 4723
3030 EV_FREQUENT_CHECK; 4724 EV_FREQUENT_CHECK;
3031 4725
3032 { 4726 {
… …
3038 4732
3039 ev_stop (EV_A_ (W)w); 4733 ev_stop (EV_A_ (W)w);
3040 4734
3041 EV_FREQUENT_CHECK; 4735 EV_FREQUENT_CHECK;
3042} 4736}
4737#endif
3043 4738
4739#if EV_CHECK_ENABLE
3044void 4740void
3045ev_check_start (EV_P_ ev_check *w) 4741ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
3046{ 4742{
3047 if (expect_false (ev_is_active (w))) 4743 if (ecb_expect_false (ev_is_active (w)))
3048 return; 4744 return;
3049 4745
3050 EV_FREQUENT_CHECK; 4746 EV_FREQUENT_CHECK;
3051 4747
3052 ev_start (EV_A_ (W)w, ++checkcnt); 4748 ev_start (EV_A_ (W)w, ++checkcnt);
3053 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 4749 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
3054 checks [checkcnt - 1] = w; 4750 checks [checkcnt - 1] = w;
3055 4751
3056 EV_FREQUENT_CHECK; 4752 EV_FREQUENT_CHECK;
3057} 4753}
3058 4754
3059void 4755void
3060ev_check_stop (EV_P_ ev_check *w) 4756ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
3061{ 4757{
3062 clear_pending (EV_A_ (W)w); 4758 clear_pending (EV_A_ (W)w);
3063 if (expect_false (!ev_is_active (w))) 4759 if (ecb_expect_false (!ev_is_active (w)))
3064 return; 4760 return;
3065 4761
3066 EV_FREQUENT_CHECK; 4762 EV_FREQUENT_CHECK;
3067 4763
3068 { 4764 {
… …
3074 4770
3075 ev_stop (EV_A_ (W)w); 4771 ev_stop (EV_A_ (W)w);
3076 4772
3077 EV_FREQUENT_CHECK; 4773 EV_FREQUENT_CHECK;
3078} 4774}
4775#endif
3079 4776
3080#if EV_EMBED_ENABLE 4777#if EV_EMBED_ENABLE
3081void noinline 4778ecb_noinline
4779void
3082ev_embed_sweep (EV_P_ ev_embed *w) 4780ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
3083{ 4781{
3084 ev_loop (w->other, EVLOOP_NONBLOCK); 4782 ev_run (w->other, EVRUN_NOWAIT);
3085} 4783}
3086 4784
3087static void 4785static void
3088embed_io_cb (EV_P_ ev_io *io, int revents) 4786embed_io_cb (EV_P_ ev_io *io, int revents)
3089{ 4787{
3090 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4788 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3091 4789
3092 if (ev_cb (w)) 4790 if (ev_cb (w))
3093 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4791 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3094 else 4792 else
3095 ev_loop (w->other, EVLOOP_NONBLOCK); 4793 ev_run (w->other, EVRUN_NOWAIT);
3096} 4794}
3097 4795
3098static void 4796static void
3099embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4797embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3100{ 4798{
3101 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 4799 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
3102 4800
3103 { 4801 {
3104 struct ev_loop *loop = w->other; 4802 EV_P = w->other;
3105 4803
3106 while (fdchangecnt) 4804 while (fdchangecnt)
3107 { 4805 {
3108 fd_reify (EV_A); 4806 fd_reify (EV_A);
3109 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4807 ev_run (EV_A_ EVRUN_NOWAIT);
3110 } 4808 }
3111 } 4809 }
3112} 4810}
3113 4811
3114static void 4812static void
… …
3117 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));
3118 4816
3119 ev_embed_stop (EV_A_ w); 4817 ev_embed_stop (EV_A_ w);
3120 4818
3121 { 4819 {
3122 struct ev_loop *loop = w->other; 4820 EV_P = w->other;
3123 4821
3124 ev_loop_fork (EV_A); 4822 ev_loop_fork (EV_A);
3125 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4823 ev_run (EV_A_ EVRUN_NOWAIT);
3126 } 4824 }
3127 4825
3128 ev_embed_start (EV_A_ w); 4826 ev_embed_start (EV_A_ w);
3129} 4827}
3130 4828
… …
3135 ev_idle_stop (EV_A_ idle); 4833 ev_idle_stop (EV_A_ idle);
3136} 4834}
3137#endif 4835#endif
3138 4836
3139void 4837void
3140ev_embed_start (EV_P_ ev_embed *w) 4838ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
3141{ 4839{
3142 if (expect_false (ev_is_active (w))) 4840 if (ecb_expect_false (ev_is_active (w)))
3143 return; 4841 return;
3144 4842
3145 { 4843 {
3146 struct ev_loop *loop = w->other; 4844 EV_P = w->other;
3147 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 ()));
3148 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);
3149 } 4847 }
3150 4848
3151 EV_FREQUENT_CHECK; 4849 EV_FREQUENT_CHECK;
… …
3166 4864
3167 EV_FREQUENT_CHECK; 4865 EV_FREQUENT_CHECK;
3168} 4866}
3169 4867
3170void 4868void
3171ev_embed_stop (EV_P_ ev_embed *w) 4869ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
3172{ 4870{
3173 clear_pending (EV_A_ (W)w); 4871 clear_pending (EV_A_ (W)w);
3174 if (expect_false (!ev_is_active (w))) 4872 if (ecb_expect_false (!ev_is_active (w)))
3175 return; 4873 return;
3176 4874
3177 EV_FREQUENT_CHECK; 4875 EV_FREQUENT_CHECK;
3178 4876
3179 ev_io_stop (EV_A_ &w->io); 4877 ev_io_stop (EV_A_ &w->io);
3180 ev_prepare_stop (EV_A_ &w->prepare); 4878 ev_prepare_stop (EV_A_ &w->prepare);
3181 ev_fork_stop (EV_A_ &w->fork); 4879 ev_fork_stop (EV_A_ &w->fork);
3182 4880
4881 ev_stop (EV_A_ (W)w);
4882
3183 EV_FREQUENT_CHECK; 4883 EV_FREQUENT_CHECK;
3184} 4884}
3185#endif 4885#endif
3186 4886
3187#if EV_FORK_ENABLE 4887#if EV_FORK_ENABLE
3188void 4888void
3189ev_fork_start (EV_P_ ev_fork *w) 4889ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
3190{ 4890{
3191 if (expect_false (ev_is_active (w))) 4891 if (ecb_expect_false (ev_is_active (w)))
3192 return; 4892 return;
3193 4893
3194 EV_FREQUENT_CHECK; 4894 EV_FREQUENT_CHECK;
3195 4895
3196 ev_start (EV_A_ (W)w, ++forkcnt); 4896 ev_start (EV_A_ (W)w, ++forkcnt);
3197 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 4897 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
3198 forks [forkcnt - 1] = w; 4898 forks [forkcnt - 1] = w;
3199 4899
3200 EV_FREQUENT_CHECK; 4900 EV_FREQUENT_CHECK;
3201} 4901}
3202 4902
3203void 4903void
3204ev_fork_stop (EV_P_ ev_fork *w) 4904ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
3205{ 4905{
3206 clear_pending (EV_A_ (W)w); 4906 clear_pending (EV_A_ (W)w);
3207 if (expect_false (!ev_is_active (w))) 4907 if (ecb_expect_false (!ev_is_active (w)))
3208 return; 4908 return;
3209 4909
3210 EV_FREQUENT_CHECK; 4910 EV_FREQUENT_CHECK;
3211 4911
3212 { 4912 {
… …
3220 4920
3221 EV_FREQUENT_CHECK; 4921 EV_FREQUENT_CHECK;
3222} 4922}
3223#endif 4923#endif
3224 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
3225#if EV_ASYNC_ENABLE 4966#if EV_ASYNC_ENABLE
3226void 4967void
3227ev_async_start (EV_P_ ev_async *w) 4968ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
3228{ 4969{
3229 if (expect_false (ev_is_active (w))) 4970 if (ecb_expect_false (ev_is_active (w)))
3230 return; 4971 return;
3231 4972
4973 w->sent = 0;
4974
3232 evpipe_init (EV_A); 4975 evpipe_init (EV_A);
3233 4976
3234 EV_FREQUENT_CHECK; 4977 EV_FREQUENT_CHECK;
3235 4978
3236 ev_start (EV_A_ (W)w, ++asynccnt); 4979 ev_start (EV_A_ (W)w, ++asynccnt);
3237 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 4980 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
3238 asyncs [asynccnt - 1] = w; 4981 asyncs [asynccnt - 1] = w;
3239 4982
3240 EV_FREQUENT_CHECK; 4983 EV_FREQUENT_CHECK;
3241} 4984}
3242 4985
3243void 4986void
3244ev_async_stop (EV_P_ ev_async *w) 4987ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
3245{ 4988{
3246 clear_pending (EV_A_ (W)w); 4989 clear_pending (EV_A_ (W)w);
3247 if (expect_false (!ev_is_active (w))) 4990 if (ecb_expect_false (!ev_is_active (w)))
3248 return; 4991 return;
3249 4992
3250 EV_FREQUENT_CHECK; 4993 EV_FREQUENT_CHECK;
3251 4994
3252 { 4995 {
… …
3260 5003
3261 EV_FREQUENT_CHECK; 5004 EV_FREQUENT_CHECK;
3262} 5005}
3263 5006
3264void 5007void
3265ev_async_send (EV_P_ ev_async *w) 5008ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
3266{ 5009{
3267 w->sent = 1; 5010 w->sent = 1;
3268 evpipe_write (EV_A_ &gotasync); 5011 evpipe_write (EV_A_ &async_pending);
3269} 5012}
3270#endif 5013#endif
3271 5014
3272/*****************************************************************************/ 5015/*****************************************************************************/
3273 5016
… …
3307 5050
3308 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));
3309} 5052}
3310 5053
3311void 5054void
3312ev_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
3313{ 5056{
3314 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));
3315
3316 if (expect_false (!once))
3317 {
3318 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
3319 return;
3320 }
3321 5058
3322 once->cb = cb; 5059 once->cb = cb;
3323 once->arg = arg; 5060 once->arg = arg;
3324 5061
3325 ev_init (&once->io, once_cb_io); 5062 ev_init (&once->io, once_cb_io);
… …
3338} 5075}
3339 5076
3340/*****************************************************************************/ 5077/*****************************************************************************/
3341 5078
3342#if EV_WALK_ENABLE 5079#if EV_WALK_ENABLE
5080ecb_cold
3343void 5081void
3344ev_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
3345{ 5083{
3346 int i, j; 5084 int i, j;
3347 ev_watcher_list *wl, *wn; 5085 ev_watcher_list *wl, *wn;
3348 5086
3349 if (types & (EV_IO | EV_EMBED)) 5087 if (types & (EV_IO | EV_EMBED))
… …
3392 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 5130 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3393#endif 5131#endif
3394 5132
3395#if EV_IDLE_ENABLE 5133#if EV_IDLE_ENABLE
3396 if (types & EV_IDLE) 5134 if (types & EV_IDLE)
3397 for (j = NUMPRI; i--; ) 5135 for (j = NUMPRI; j--; )
3398 for (i = idlecnt [j]; i--; ) 5136 for (i = idlecnt [j]; i--; )
3399 cb (EV_A_ EV_IDLE, idles [j][i]); 5137 cb (EV_A_ EV_IDLE, idles [j][i]);
3400#endif 5138#endif
3401 5139
3402#if EV_FORK_ENABLE 5140#if EV_FORK_ENABLE
… …
3410 if (types & EV_ASYNC) 5148 if (types & EV_ASYNC)
3411 for (i = asynccnt; i--; ) 5149 for (i = asynccnt; i--; )
3412 cb (EV_A_ EV_ASYNC, asyncs [i]); 5150 cb (EV_A_ EV_ASYNC, asyncs [i]);
3413#endif 5151#endif
3414 5152
5153#if EV_PREPARE_ENABLE
3415 if (types & EV_PREPARE) 5154 if (types & EV_PREPARE)
3416 for (i = preparecnt; i--; ) 5155 for (i = preparecnt; i--; )
3417#if EV_EMBED_ENABLE 5156# if EV_EMBED_ENABLE
3418 if (ev_cb (prepares [i]) != embed_prepare_cb) 5157 if (ev_cb (prepares [i]) != embed_prepare_cb)
3419#endif 5158# endif
3420 cb (EV_A_ EV_PREPARE, prepares [i]); 5159 cb (EV_A_ EV_PREPARE, prepares [i]);
5160#endif
3421 5161
5162#if EV_CHECK_ENABLE
3422 if (types & EV_CHECK) 5163 if (types & EV_CHECK)
3423 for (i = checkcnt; i--; ) 5164 for (i = checkcnt; i--; )
3424 cb (EV_A_ EV_CHECK, checks [i]); 5165 cb (EV_A_ EV_CHECK, checks [i]);
5166#endif
3425 5167
5168#if EV_SIGNAL_ENABLE
3426 if (types & EV_SIGNAL) 5169 if (types & EV_SIGNAL)
3427 for (i = 0; i < signalmax; ++i) 5170 for (i = 0; i < EV_NSIG - 1; ++i)
3428 for (wl = signals [i].head; wl; ) 5171 for (wl = signals [i].head; wl; )
3429 { 5172 {
3430 wn = wl->next; 5173 wn = wl->next;
3431 cb (EV_A_ EV_SIGNAL, wl); 5174 cb (EV_A_ EV_SIGNAL, wl);
3432 wl = wn; 5175 wl = wn;
3433 } 5176 }
5177#endif
3434 5178
5179#if EV_CHILD_ENABLE
3435 if (types & EV_CHILD) 5180 if (types & EV_CHILD)
3436 for (i = EV_PID_HASHSIZE; i--; ) 5181 for (i = (EV_PID_HASHSIZE); i--; )
3437 for (wl = childs [i]; wl; ) 5182 for (wl = childs [i]; wl; )
3438 { 5183 {
3439 wn = wl->next; 5184 wn = wl->next;
3440 cb (EV_A_ EV_CHILD, wl); 5185 cb (EV_A_ EV_CHILD, wl);
3441 wl = wn; 5186 wl = wn;
3442 } 5187 }
5188#endif
3443/* EV_STAT 0x00001000 /* stat data changed */ 5189/* EV_STAT 0x00001000 /* stat data changed */
3444/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 5190/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3445} 5191}
3446#endif 5192#endif
3447 5193
3448#if EV_MULTIPLICITY 5194#if EV_MULTIPLICITY
3449 #include "ev_wrap.h" 5195 #include "ev_wrap.h"
3450#endif 5196#endif
3451 5197
3452#ifdef __cplusplus
3453}
3454#endif
3455

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