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Comparing libev/ev.c (file contents):
Revision 1.308 by root, Sun Jul 19 20:39:54 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_SIGNALFD 148# ifndef EV_USE_INOTIFY
139# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H 149# define EV_USE_INOTIFY EV_FEATURE_OS
140# define EV_USE_SIGNALFD 1
141# else
142# define EV_USE_SIGNALFD 0
143# endif 150# endif
151# else
152# undef EV_USE_INOTIFY
153# define EV_USE_INOTIFY 0
144# endif 154# endif
145 155
156# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
146# ifndef EV_USE_EVENTFD 157# ifndef EV_USE_SIGNALFD
147# if HAVE_EVENTFD 158# define EV_USE_SIGNALFD EV_FEATURE_OS
148# define EV_USE_EVENTFD 1
149# else
150# define EV_USE_EVENTFD 0
151# endif 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
152# endif 172# endif
153 173
154#endif 174#endif
155 175
156#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
157#include <stdlib.h> 186#include <stdlib.h>
187#include <string.h>
158#include <fcntl.h> 188#include <fcntl.h>
159#include <stddef.h> 189#include <stddef.h>
160 190
161#include <stdio.h> 191#include <stdio.h>
162 192
163#include <assert.h> 193#include <assert.h>
164#include <errno.h> 194#include <errno.h>
165#include <sys/types.h> 195#include <sys/types.h>
166#include <time.h> 196#include <time.h>
197#include <limits.h>
167 198
168#include <signal.h> 199#include <signal.h>
169 200
170#ifdef EV_H 201#ifdef EV_H
171# include EV_H 202# include EV_H
172#else 203#else
173# 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
174#endif 216#endif
175 217
176#ifndef _WIN32 218#ifndef _WIN32
177# include <sys/time.h> 219# include <sys/time.h>
178# include <sys/wait.h> 220# include <sys/wait.h>
179# include <unistd.h> 221# include <unistd.h>
180#else 222#else
181# include <io.h> 223# include <io.h>
182# define WIN32_LEAN_AND_MEAN 224# define WIN32_LEAN_AND_MEAN
225# include <winsock2.h>
183# include <windows.h> 226# include <windows.h>
184# ifndef EV_SELECT_IS_WINSOCKET 227# ifndef EV_SELECT_IS_WINSOCKET
185# define EV_SELECT_IS_WINSOCKET 1 228# define EV_SELECT_IS_WINSOCKET 1
186# endif 229# endif
230# undef EV_AVOID_STDIO
187#endif 231#endif
188 232
189/* 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 */
190 234
191/* try to deduce the maximum number of signals on this platform */ 235/* try to deduce the maximum number of signals on this platform */
192#if defined (EV_NSIG) 236#if defined EV_NSIG
193/* use what's provided */ 237/* use what's provided */
194#elif defined (NSIG) 238#elif defined NSIG
195# define EV_NSIG (NSIG) 239# define EV_NSIG (NSIG)
196#elif defined(_NSIG) 240#elif defined _NSIG
197# define EV_NSIG (_NSIG) 241# define EV_NSIG (_NSIG)
198#elif defined (SIGMAX) 242#elif defined SIGMAX
199# define EV_NSIG (SIGMAX+1) 243# define EV_NSIG (SIGMAX+1)
200#elif defined (SIG_MAX) 244#elif defined SIG_MAX
201# define EV_NSIG (SIG_MAX+1) 245# define EV_NSIG (SIG_MAX+1)
202#elif defined (_SIG_MAX) 246#elif defined _SIG_MAX
203# define EV_NSIG (_SIG_MAX+1) 247# define EV_NSIG (_SIG_MAX+1)
204#elif defined (MAXSIG) 248#elif defined MAXSIG
205# define EV_NSIG (MAXSIG+1) 249# define EV_NSIG (MAXSIG+1)
206#elif defined (MAX_SIG) 250#elif defined MAX_SIG
207# define EV_NSIG (MAX_SIG+1) 251# define EV_NSIG (MAX_SIG+1)
208#elif defined (SIGARRAYSIZE) 252#elif defined SIGARRAYSIZE
209# define EV_NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */ 253# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
210#elif defined (_sys_nsig) 254#elif defined _sys_nsig
211# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 255# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
212#else 256#else
213# error "unable to find value for NSIG, please report" 257# define EV_NSIG (8 * sizeof (sigset_t) + 1)
214/* to make it compile regardless, just remove the above line */ 258#endif
215# define EV_NSIG 65 259
260#ifndef EV_USE_FLOOR
261# define EV_USE_FLOOR 0
216#endif 262#endif
217 263
218#ifndef EV_USE_CLOCK_SYSCALL 264#ifndef EV_USE_CLOCK_SYSCALL
219# if __linux && __GLIBC__ >= 2 265# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
220# define EV_USE_CLOCK_SYSCALL 1 266# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
221# else 267# else
222# define EV_USE_CLOCK_SYSCALL 0 268# define EV_USE_CLOCK_SYSCALL 0
223# endif 269# endif
224#endif 270#endif
225 271
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
226#ifndef EV_USE_MONOTONIC 281#ifndef EV_USE_MONOTONIC
227# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 282# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
228# define EV_USE_MONOTONIC 1 283# define EV_USE_MONOTONIC EV_FEATURE_OS
229# else 284# else
230# define EV_USE_MONOTONIC 0 285# define EV_USE_MONOTONIC 0
231# endif 286# endif
232#endif 287#endif
233 288
… …
235# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 290# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
236#endif 291#endif
237 292
238#ifndef EV_USE_NANOSLEEP 293#ifndef EV_USE_NANOSLEEP
239# if _POSIX_C_SOURCE >= 199309L 294# if _POSIX_C_SOURCE >= 199309L
240# define EV_USE_NANOSLEEP 1 295# define EV_USE_NANOSLEEP EV_FEATURE_OS
241# else 296# else
242# define EV_USE_NANOSLEEP 0 297# define EV_USE_NANOSLEEP 0
243# endif 298# endif
244#endif 299#endif
245 300
246#ifndef EV_USE_SELECT 301#ifndef EV_USE_SELECT
247# define EV_USE_SELECT 1 302# define EV_USE_SELECT EV_FEATURE_BACKENDS
248#endif 303#endif
249 304
250#ifndef EV_USE_POLL 305#ifndef EV_USE_POLL
251# ifdef _WIN32 306# ifdef _WIN32
252# define EV_USE_POLL 0 307# define EV_USE_POLL 0
253# else 308# else
254# define EV_USE_POLL 1 309# define EV_USE_POLL EV_FEATURE_BACKENDS
255# endif 310# endif
256#endif 311#endif
257 312
258#ifndef EV_USE_EPOLL 313#ifndef EV_USE_EPOLL
259# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 314# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
260# define EV_USE_EPOLL 1 315# define EV_USE_EPOLL EV_FEATURE_BACKENDS
261# else 316# else
262# define EV_USE_EPOLL 0 317# define EV_USE_EPOLL 0
263# endif 318# endif
264#endif 319#endif
265 320
… …
269 324
270#ifndef EV_USE_PORT 325#ifndef EV_USE_PORT
271# define EV_USE_PORT 0 326# define EV_USE_PORT 0
272#endif 327#endif
273 328
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
274#ifndef EV_USE_INOTIFY 337#ifndef EV_USE_INOTIFY
275# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 338# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
276# define EV_USE_INOTIFY 1 339# define EV_USE_INOTIFY EV_FEATURE_OS
277# else 340# else
278# define EV_USE_INOTIFY 0 341# define EV_USE_INOTIFY 0
279# endif 342# endif
280#endif 343#endif
281 344
282#ifndef EV_PID_HASHSIZE 345#ifndef EV_PID_HASHSIZE
283# if EV_MINIMAL 346# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
284# define EV_PID_HASHSIZE 1
285# else
286# define EV_PID_HASHSIZE 16
287# endif
288#endif 347#endif
289 348
290#ifndef EV_INOTIFY_HASHSIZE 349#ifndef EV_INOTIFY_HASHSIZE
291# if EV_MINIMAL 350# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
292# define EV_INOTIFY_HASHSIZE 1
293# else
294# define EV_INOTIFY_HASHSIZE 16
295# endif
296#endif 351#endif
297 352
298#ifndef EV_USE_EVENTFD 353#ifndef EV_USE_EVENTFD
299# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 354# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
300# define EV_USE_EVENTFD 1 355# define EV_USE_EVENTFD EV_FEATURE_OS
301# else 356# else
302# define EV_USE_EVENTFD 0 357# define EV_USE_EVENTFD 0
303# endif 358# endif
304#endif 359#endif
305 360
306#ifndef EV_USE_SIGNALFD 361#ifndef EV_USE_SIGNALFD
307# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 9)) 362# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
308# define EV_USE_SIGNALFD 1 363# define EV_USE_SIGNALFD EV_FEATURE_OS
309# else 364# else
310# define EV_USE_SIGNALFD 0 365# define EV_USE_SIGNALFD 0
311# endif 366# endif
312#endif 367#endif
313 368
… …
316# define EV_USE_4HEAP 1 371# define EV_USE_4HEAP 1
317# define EV_HEAP_CACHE_AT 1 372# define EV_HEAP_CACHE_AT 1
318#endif 373#endif
319 374
320#ifndef EV_VERIFY 375#ifndef EV_VERIFY
321# define EV_VERIFY !EV_MINIMAL 376# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
322#endif 377#endif
323 378
324#ifndef EV_USE_4HEAP 379#ifndef EV_USE_4HEAP
325# define EV_USE_4HEAP !EV_MINIMAL 380# define EV_USE_4HEAP EV_FEATURE_DATA
326#endif 381#endif
327 382
328#ifndef EV_HEAP_CACHE_AT 383#ifndef EV_HEAP_CACHE_AT
329# 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
330#endif 401#endif
331 402
332/* 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, */
333/* which makes programs even slower. might work on other unices, too. */ 404/* which makes programs even slower. might work on other unices, too. */
334#if EV_USE_CLOCK_SYSCALL 405#if EV_USE_CLOCK_SYSCALL
335# include <syscall.h> 406# include <sys/syscall.h>
336# ifdef SYS_clock_gettime 407# ifdef SYS_clock_gettime
337# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 408# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
338# undef EV_USE_MONOTONIC 409# undef EV_USE_MONOTONIC
339# define EV_USE_MONOTONIC 1 410# define EV_USE_MONOTONIC 1
340# else 411# else
… …
359# undef EV_USE_INOTIFY 430# undef EV_USE_INOTIFY
360# define EV_USE_INOTIFY 0 431# define EV_USE_INOTIFY 0
361#endif 432#endif
362 433
363#if !EV_USE_NANOSLEEP 434#if !EV_USE_NANOSLEEP
364# ifndef _WIN32 435/* hp-ux has it in sys/time.h, which we unconditionally include above */
436# if !defined _WIN32 && !defined __hpux
365# include <sys/select.h> 437# include <sys/select.h>
366# endif 438# endif
367#endif 439#endif
368 440
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
369#if EV_USE_INOTIFY 449#if EV_USE_INOTIFY
370# include <sys/utsname.h>
371# include <sys/statfs.h> 450# include <sys/statfs.h>
372# include <sys/inotify.h> 451# include <sys/inotify.h>
373/* 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 */
374# ifndef IN_DONT_FOLLOW 453# ifndef IN_DONT_FOLLOW
375# undef EV_USE_INOTIFY 454# undef EV_USE_INOTIFY
376# define EV_USE_INOTIFY 0 455# define EV_USE_INOTIFY 0
377# endif 456# endif
378#endif 457#endif
379 458
380#if EV_SELECT_IS_WINSOCKET
381# include <winsock.h>
382#endif
383
384#if EV_USE_EVENTFD 459#if EV_USE_EVENTFD
385/* 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 */
386# include <stdint.h> 461# include <stdint.h>
387# ifndef EFD_NONBLOCK 462# ifndef EFD_NONBLOCK
388# define EFD_NONBLOCK O_NONBLOCK 463# define EFD_NONBLOCK O_NONBLOCK
389# endif 464# endif
390# ifndef EFD_CLOEXEC 465# ifndef EFD_CLOEXEC
466# ifdef O_CLOEXEC
391# define EFD_CLOEXEC O_CLOEXEC 467# define EFD_CLOEXEC O_CLOEXEC
468# else
469# define EFD_CLOEXEC 02000000
470# endif
392# endif 471# endif
393# ifdef __cplusplus 472EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
394extern "C" { 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
395# endif 480# endif
396int eventfd (unsigned int initval, int flags); 481# ifndef SFD_CLOEXEC
397# ifdef __cplusplus 482# ifdef O_CLOEXEC
398} 483# define SFD_CLOEXEC O_CLOEXEC
484# else
485# define SFD_CLOEXEC 02000000
486# endif
399# endif 487# endif
400#endif 488EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
401 489
402#if EV_USE_SIGNALFD 490struct signalfd_siginfo
403# include <sys/signalfd.h> 491{
492 uint32_t ssi_signo;
493 char pad[128 - sizeof (uint32_t)];
494};
404#endif 495#endif
405 496
406/**/ 497/**/
407 498
408#if EV_VERIFY >= 3 499#if EV_VERIFY >= 3
409# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 500# define EV_FREQUENT_CHECK ev_verify (EV_A)
410#else 501#else
411# define EV_FREQUENT_CHECK do { } while (0) 502# define EV_FREQUENT_CHECK do { } while (0)
412#endif 503#endif
413 504
414/* 505/*
415 * This is used to avoid floating point rounding problems. 506 * This is used to work around floating point rounding problems.
416 * It is added to ev_rt_now when scheduling periodics
417 * to ensure progress, time-wise, even when rounding
418 * errors are against us.
419 * This value is good at least till the year 4000. 507 * This value is good at least till the year 4000.
420 * Better solutions welcome.
421 */ 508 */
422#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 */
423 511
424#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) */
425#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) */
426/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
427 514
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;
428#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)
429# define expect(expr,value) __builtin_expect ((expr),(value)) 872 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
430# define noinline __attribute__ ((noinline))
431#else 873#else
432# define expect(expr,value) (expr) 874 #define ecb_expect(expr,value) (expr)
433# define noinline
434# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
435# define inline
436# endif 875#endif
437#endif
438 876
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. */
439#define expect_false(expr) expect ((expr) != 0, 0) 941#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
440#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
441#define inline_size static inline 1555#define inline_size ecb_inline
442 1556
443#if EV_MINIMAL 1557#if EV_FEATURE_CODE
444# define inline_speed static noinline
445#else
446# define inline_speed static inline 1558# define inline_speed ecb_inline
1559#else
1560# define inline_speed ecb_noinline static
447#endif 1561#endif
448 1562
449#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1563#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
450 1564
451#if EV_MINPRI == EV_MAXPRI 1565#if EV_MINPRI == EV_MAXPRI
452# define ABSPRI(w) (((W)w), 0) 1566# define ABSPRI(w) (((W)w), 0)
453#else 1567#else
454# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1568# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
455#endif 1569#endif
456 1570
457#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1571#define EMPTY /* required for microsofts broken pseudo-c compiler */
458#define EMPTY2(a,b) /* used to suppress some warnings */
459 1572
460typedef ev_watcher *W; 1573typedef ev_watcher *W;
461typedef ev_watcher_list *WL; 1574typedef ev_watcher_list *WL;
462typedef ev_watcher_time *WT; 1575typedef ev_watcher_time *WT;
463 1576
464#define ev_active(w) ((W)(w))->active 1577#define ev_active(w) ((W)(w))->active
465#define ev_at(w) ((WT)(w))->at 1578#define ev_at(w) ((WT)(w))->at
466 1579
467#if EV_USE_REALTIME 1580#if EV_USE_REALTIME
468/* 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 */
469/* giving it a reasonably high chance of working on typical architetcures */ 1582/* giving it a reasonably high chance of working on typical architectures */
470static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 1583static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
471#endif 1584#endif
472 1585
473#if EV_USE_MONOTONIC 1586#if EV_USE_MONOTONIC
474static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 1587static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
475#endif 1588#endif
476 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
477#ifdef _WIN32 1600#ifdef _WIN32
478# include "ev_win32.c" 1601# include "ev_win32.c"
479#endif 1602#endif
480 1603
481/*****************************************************************************/ 1604/*****************************************************************************/
482 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
483static void (*syserr_cb)(const char *msg); 1711static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
484 1712
1713ecb_cold
485void 1714void
486ev_set_syserr_cb (void (*cb)(const char *msg)) 1715ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
487{ 1716{
488 syserr_cb = cb; 1717 syserr_cb = cb;
489} 1718}
490 1719
491static void noinline 1720ecb_noinline ecb_cold
1721static void
492ev_syserr (const char *msg) 1722ev_syserr (const char *msg)
493{ 1723{
494 if (!msg) 1724 if (!msg)
495 msg = "(libev) system error"; 1725 msg = "(libev) system error";
496 1726
497 if (syserr_cb) 1727 if (syserr_cb)
498 syserr_cb (msg); 1728 syserr_cb (msg);
499 else 1729 else
500 { 1730 {
1731#if EV_AVOID_STDIO
1732 ev_printerr (msg);
1733 ev_printerr (": ");
1734 ev_printerr (strerror (errno));
1735 ev_printerr ("\n");
1736#else
501 perror (msg); 1737 perror (msg);
1738#endif
502 abort (); 1739 abort ();
503 } 1740 }
504} 1741}
505 1742
506static void * 1743static void *
507ev_realloc_emul (void *ptr, long size) 1744ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
508{ 1745{
509 /* some systems, notably openbsd and darwin, fail to properly 1746 /* some systems, notably openbsd and darwin, fail to properly
510 * 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
511 * 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.
512 */ 1751 */
513 1752
514 if (size) 1753 if (size)
515 return realloc (ptr, size); 1754 return realloc (ptr, size);
516 1755
517 free (ptr); 1756 free (ptr);
518 return 0; 1757 return 0;
519} 1758}
520 1759
521static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1760static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
522 1761
1762ecb_cold
523void 1763void
524ev_set_allocator (void *(*cb)(void *ptr, long size)) 1764ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
525{ 1765{
526 alloc = cb; 1766 alloc = cb;
527} 1767}
528 1768
529inline_speed void * 1769inline_speed void *
… …
531{ 1771{
532 ptr = alloc (ptr, size); 1772 ptr = alloc (ptr, size);
533 1773
534 if (!ptr && size) 1774 if (!ptr && size)
535 { 1775 {
1776#if EV_AVOID_STDIO
1777 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1778#else
536 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1779 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1780#endif
537 abort (); 1781 abort ();
538 } 1782 }
539 1783
540 return ptr; 1784 return ptr;
541} 1785}
… …
552typedef struct 1796typedef struct
553{ 1797{
554 WL head; 1798 WL head;
555 unsigned char events; /* the events watched for */ 1799 unsigned char events; /* the events watched for */
556 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) */
557 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 */
558 unsigned char unused; 1802 unsigned char unused;
559#if EV_USE_EPOLL 1803#if EV_USE_EPOLL
560 unsigned int egen; /* generation counter to counter epoll bugs */ 1804 unsigned int egen; /* generation counter to counter epoll bugs */
561#endif 1805#endif
562#if EV_SELECT_IS_WINSOCKET 1806#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
563 SOCKET handle; 1807 SOCKET handle;
1808#endif
1809#if EV_USE_IOCP
1810 OVERLAPPED or, ow;
564#endif 1811#endif
565} ANFD; 1812} ANFD;
566 1813
567/* stores the pending event set for a given watcher */ 1814/* stores the pending event set for a given watcher */
568typedef struct 1815typedef struct
… …
610 #undef VAR 1857 #undef VAR
611 }; 1858 };
612 #include "ev_wrap.h" 1859 #include "ev_wrap.h"
613 1860
614 static struct ev_loop default_loop_struct; 1861 static struct ev_loop default_loop_struct;
615 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 */
616 1863
617#else 1864#else
618 1865
619 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 */
620 #define VAR(name,decl) static decl; 1867 #define VAR(name,decl) static decl;
621 #include "ev_vars.h" 1868 #include "ev_vars.h"
622 #undef VAR 1869 #undef VAR
623 1870
624 static int ev_default_loop_ptr; 1871 static int ev_default_loop_ptr;
625 1872
626#endif 1873#endif
627 1874
628#if EV_MINIMAL < 2 1875#if EV_FEATURE_API
629# 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)
630# 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)
631# define EV_INVOKE_PENDING invoke_cb (EV_A) 1878# define EV_INVOKE_PENDING invoke_cb (EV_A)
632#else 1879#else
633# define EV_RELEASE_CB (void)0 1880# define EV_RELEASE_CB (void)0
634# define EV_ACQUIRE_CB (void)0 1881# define EV_ACQUIRE_CB (void)0
635# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1882# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
636#endif 1883#endif
637 1884
638#define EVUNLOOP_RECURSE 0x80 1885#define EVBREAK_RECURSE 0x80
639 1886
640/*****************************************************************************/ 1887/*****************************************************************************/
641 1888
642#ifndef EV_HAVE_EV_TIME 1889#ifndef EV_HAVE_EV_TIME
643ev_tstamp 1890ev_tstamp
644ev_time (void) 1891ev_time (void) EV_NOEXCEPT
645{ 1892{
646#if EV_USE_REALTIME 1893#if EV_USE_REALTIME
647 if (expect_true (have_realtime)) 1894 if (ecb_expect_true (have_realtime))
648 { 1895 {
649 struct timespec ts; 1896 struct timespec ts;
650 clock_gettime (CLOCK_REALTIME, &ts); 1897 clock_gettime (CLOCK_REALTIME, &ts);
651 return ts.tv_sec + ts.tv_nsec * 1e-9; 1898 return ts.tv_sec + ts.tv_nsec * 1e-9;
652 } 1899 }
… …
660 1907
661inline_size ev_tstamp 1908inline_size ev_tstamp
662get_clock (void) 1909get_clock (void)
663{ 1910{
664#if EV_USE_MONOTONIC 1911#if EV_USE_MONOTONIC
665 if (expect_true (have_monotonic)) 1912 if (ecb_expect_true (have_monotonic))
666 { 1913 {
667 struct timespec ts; 1914 struct timespec ts;
668 clock_gettime (CLOCK_MONOTONIC, &ts); 1915 clock_gettime (CLOCK_MONOTONIC, &ts);
669 return ts.tv_sec + ts.tv_nsec * 1e-9; 1916 return ts.tv_sec + ts.tv_nsec * 1e-9;
670 } 1917 }
… …
673 return ev_time (); 1920 return ev_time ();
674} 1921}
675 1922
676#if EV_MULTIPLICITY 1923#if EV_MULTIPLICITY
677ev_tstamp 1924ev_tstamp
678ev_now (EV_P) 1925ev_now (EV_P) EV_NOEXCEPT
679{ 1926{
680 return ev_rt_now; 1927 return ev_rt_now;
681} 1928}
682#endif 1929#endif
683 1930
684void 1931void
685ev_sleep (ev_tstamp delay) 1932ev_sleep (ev_tstamp delay) EV_NOEXCEPT
686{ 1933{
687 if (delay > 0.) 1934 if (delay > 0.)
688 { 1935 {
689#if EV_USE_NANOSLEEP 1936#if EV_USE_NANOSLEEP
690 struct timespec ts; 1937 struct timespec ts;
691 1938
692 ts.tv_sec = (time_t)delay; 1939 EV_TS_SET (ts, delay);
693 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
694
695 nanosleep (&ts, 0); 1940 nanosleep (&ts, 0);
696#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) */
697 Sleep ((unsigned long)(delay * 1e3)); 1944 Sleep ((unsigned long)(delay * 1e3));
698#else 1945#else
699 struct timeval tv; 1946 struct timeval tv;
700
701 tv.tv_sec = (time_t)delay;
702 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
703 1947
704 /* 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 */
705 /* something not guaranteed by newer posix versions, but guaranteed */ 1949 /* something not guaranteed by newer posix versions, but guaranteed */
706 /* by older ones */ 1950 /* by older ones */
1951 EV_TV_SET (tv, delay);
707 select (0, 0, 0, 0, &tv); 1952 select (0, 0, 0, 0, &tv);
708#endif 1953#endif
709 } 1954 }
710} 1955}
711 1956
712/*****************************************************************************/ 1957/*****************************************************************************/
713 1958
714#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 */
715 1960
716/* find a suitable new size for the given array, */ 1961/* find a suitable new size for the given array, */
717/* hopefully by rounding to a ncie-to-malloc size */ 1962/* hopefully by rounding to a nice-to-malloc size */
718inline_size int 1963inline_size int
719array_nextsize (int elem, int cur, int cnt) 1964array_nextsize (int elem, int cur, int cnt)
720{ 1965{
721 int ncur = cur + 1; 1966 int ncur = cur + 1;
722 1967
723 do 1968 do
724 ncur <<= 1; 1969 ncur <<= 1;
725 while (cnt > ncur); 1970 while (cnt > ncur);
726 1971
727 /* 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 */
728 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1973 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
729 { 1974 {
730 ncur *= elem; 1975 ncur *= elem;
731 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);
732 ncur = ncur - sizeof (void *) * 4; 1977 ncur = ncur - sizeof (void *) * 4;
… …
734 } 1979 }
735 1980
736 return ncur; 1981 return ncur;
737} 1982}
738 1983
739static noinline void * 1984ecb_noinline ecb_cold
1985static void *
740array_realloc (int elem, void *base, int *cur, int cnt) 1986array_realloc (int elem, void *base, int *cur, int cnt)
741{ 1987{
742 *cur = array_nextsize (elem, *cur, cnt); 1988 *cur = array_nextsize (elem, *cur, cnt);
743 return ev_realloc (base, elem * *cur); 1989 return ev_realloc (base, elem * *cur);
744} 1990}
745 1991
1992#define array_needsize_noinit(base,offset,count)
1993
746#define array_init_zero(base,count) \ 1994#define array_needsize_zerofill(base,offset,count) \
747 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1995 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
748 1996
749#define array_needsize(type,base,cur,cnt,init) \ 1997#define array_needsize(type,base,cur,cnt,init) \
750 if (expect_false ((cnt) > (cur))) \ 1998 if (ecb_expect_false ((cnt) > (cur))) \
751 { \ 1999 { \
752 int ocur_ = (cur); \ 2000 ecb_unused int ocur_ = (cur); \
753 (base) = (type *)array_realloc \ 2001 (base) = (type *)array_realloc \
754 (sizeof (type), (base), &(cur), (cnt)); \ 2002 (sizeof (type), (base), &(cur), (cnt)); \
755 init ((base) + (ocur_), (cur) - ocur_); \ 2003 init ((base), ocur_, ((cur) - ocur_)); \
756 } 2004 }
757 2005
758#if 0 2006#if 0
759#define array_slim(type,stem) \ 2007#define array_slim(type,stem) \
760 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2008 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
… …
769 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
770 2018
771/*****************************************************************************/ 2019/*****************************************************************************/
772 2020
773/* dummy callback for pending events */ 2021/* dummy callback for pending events */
774static void noinline 2022ecb_noinline
2023static void
775pendingcb (EV_P_ ev_prepare *w, int revents) 2024pendingcb (EV_P_ ev_prepare *w, int revents)
776{ 2025{
777} 2026}
778 2027
779void noinline 2028ecb_noinline
2029void
780ev_feed_event (EV_P_ void *w, int revents) 2030ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
781{ 2031{
782 W w_ = (W)w; 2032 W w_ = (W)w;
783 int pri = ABSPRI (w_); 2033 int pri = ABSPRI (w_);
784 2034
785 if (expect_false (w_->pending)) 2035 if (ecb_expect_false (w_->pending))
786 pendings [pri][w_->pending - 1].events |= revents; 2036 pendings [pri][w_->pending - 1].events |= revents;
787 else 2037 else
788 { 2038 {
789 w_->pending = ++pendingcnt [pri]; 2039 w_->pending = ++pendingcnt [pri];
790 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2040 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
791 pendings [pri][w_->pending - 1].w = w_; 2041 pendings [pri][w_->pending - 1].w = w_;
792 pendings [pri][w_->pending - 1].events = revents; 2042 pendings [pri][w_->pending - 1].events = revents;
793 } 2043 }
2044
2045 pendingpri = NUMPRI - 1;
794} 2046}
795 2047
796inline_speed void 2048inline_speed void
797feed_reverse (EV_P_ W w) 2049feed_reverse (EV_P_ W w)
798{ 2050{
799 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2051 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
800 rfeeds [rfeedcnt++] = w; 2052 rfeeds [rfeedcnt++] = w;
801} 2053}
802 2054
803inline_size void 2055inline_size void
804feed_reverse_done (EV_P_ int revents) 2056feed_reverse_done (EV_P_ int revents)
… …
818} 2070}
819 2071
820/*****************************************************************************/ 2072/*****************************************************************************/
821 2073
822inline_speed void 2074inline_speed void
823fd_event_nc (EV_P_ int fd, int revents) 2075fd_event_nocheck (EV_P_ int fd, int revents)
824{ 2076{
825 ANFD *anfd = anfds + fd; 2077 ANFD *anfd = anfds + fd;
826 ev_io *w; 2078 ev_io *w;
827 2079
828 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)
… …
839inline_speed void 2091inline_speed void
840fd_event (EV_P_ int fd, int revents) 2092fd_event (EV_P_ int fd, int revents)
841{ 2093{
842 ANFD *anfd = anfds + fd; 2094 ANFD *anfd = anfds + fd;
843 2095
844 if (expect_true (!anfd->reify)) 2096 if (ecb_expect_true (!anfd->reify))
845 fd_event_nc (EV_A_ fd, revents); 2097 fd_event_nocheck (EV_A_ fd, revents);
846} 2098}
847 2099
848void 2100void
849ev_feed_fd_event (EV_P_ int fd, int revents) 2101ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
850{ 2102{
851 if (fd >= 0 && fd < anfdmax) 2103 if (fd >= 0 && fd < anfdmax)
852 fd_event_nc (EV_A_ fd, revents); 2104 fd_event_nocheck (EV_A_ fd, revents);
853} 2105}
854 2106
855/* make sure the external fd watch events are in-sync */ 2107/* make sure the external fd watch events are in-sync */
856/* with the kernel/libev internal state */ 2108/* with the kernel/libev internal state */
857inline_size void 2109inline_size void
858fd_reify (EV_P) 2110fd_reify (EV_P)
859{ 2111{
860 int i; 2112 int i;
861 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
862 for (i = 0; i < fdchangecnt; ++i) 2139 for (i = 0; i < fdchangecnt; ++i)
863 { 2140 {
864 int fd = fdchanges [i]; 2141 int fd = fdchanges [i];
865 ANFD *anfd = anfds + fd; 2142 ANFD *anfd = anfds + fd;
866 ev_io *w; 2143 ev_io *w;
867 2144
868 unsigned char events = 0; 2145 unsigned char o_events = anfd->events;
2146 unsigned char o_reify = anfd->reify;
869 2147
870 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2148 anfd->reify = 0;
871 events |= (unsigned char)w->events;
872 2149
873#if EV_SELECT_IS_WINSOCKET 2150 /*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
874 if (events)
875 { 2151 {
876 unsigned long arg; 2152 anfd->events = 0;
877 #ifdef EV_FD_TO_WIN32_HANDLE 2153
878 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 2154 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
879 #else 2155 anfd->events |= (unsigned char)w->events;
880 anfd->handle = _get_osfhandle (fd); 2156
881 #endif 2157 if (o_events != anfd->events)
882 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 2158 o_reify = EV__IOFDSET; /* actually |= */
883 } 2159 }
884#endif
885 2160
886 { 2161 if (o_reify & EV__IOFDSET)
887 unsigned char o_events = anfd->events;
888 unsigned char o_reify = anfd->reify;
889
890 anfd->reify = 0;
891 anfd->events = events;
892
893 if (o_events != events || o_reify & EV__IOFDSET)
894 backend_modify (EV_A_ fd, o_events, events); 2162 backend_modify (EV_A_ fd, o_events, anfd->events);
895 }
896 } 2163 }
897 2164
898 fdchangecnt = 0; 2165 fdchangecnt = 0;
899} 2166}
900 2167
901/* something about the given fd changed */ 2168/* something about the given fd changed */
902inline_size void 2169inline_size
2170void
903fd_change (EV_P_ int fd, int flags) 2171fd_change (EV_P_ int fd, int flags)
904{ 2172{
905 unsigned char reify = anfds [fd].reify; 2173 unsigned char reify = anfds [fd].reify;
906 anfds [fd].reify |= flags; 2174 anfds [fd].reify |= flags;
907 2175
908 if (expect_true (!reify)) 2176 if (ecb_expect_true (!reify))
909 { 2177 {
910 ++fdchangecnt; 2178 ++fdchangecnt;
911 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2179 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
912 fdchanges [fdchangecnt - 1] = fd; 2180 fdchanges [fdchangecnt - 1] = fd;
913 } 2181 }
914} 2182}
915 2183
916/* 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 */
917inline_speed void 2185inline_speed ecb_cold void
918fd_kill (EV_P_ int fd) 2186fd_kill (EV_P_ int fd)
919{ 2187{
920 ev_io *w; 2188 ev_io *w;
921 2189
922 while ((w = (ev_io *)anfds [fd].head)) 2190 while ((w = (ev_io *)anfds [fd].head))
… …
924 ev_io_stop (EV_A_ w); 2192 ev_io_stop (EV_A_ w);
925 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);
926 } 2194 }
927} 2195}
928 2196
929/* check whether the given fd is atcually valid, for error recovery */ 2197/* check whether the given fd is actually valid, for error recovery */
930inline_size int 2198inline_size ecb_cold int
931fd_valid (int fd) 2199fd_valid (int fd)
932{ 2200{
933#ifdef _WIN32 2201#ifdef _WIN32
934 return _get_osfhandle (fd) != -1; 2202 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
935#else 2203#else
936 return fcntl (fd, F_GETFD) != -1; 2204 return fcntl (fd, F_GETFD) != -1;
937#endif 2205#endif
938} 2206}
939 2207
940/* called on EBADF to verify fds */ 2208/* called on EBADF to verify fds */
941static void noinline 2209ecb_noinline ecb_cold
2210static void
942fd_ebadf (EV_P) 2211fd_ebadf (EV_P)
943{ 2212{
944 int fd; 2213 int fd;
945 2214
946 for (fd = 0; fd < anfdmax; ++fd) 2215 for (fd = 0; fd < anfdmax; ++fd)
… …
948 if (!fd_valid (fd) && errno == EBADF) 2217 if (!fd_valid (fd) && errno == EBADF)
949 fd_kill (EV_A_ fd); 2218 fd_kill (EV_A_ fd);
950} 2219}
951 2220
952/* 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 */
953static void noinline 2222ecb_noinline ecb_cold
2223static void
954fd_enomem (EV_P) 2224fd_enomem (EV_P)
955{ 2225{
956 int fd; 2226 int fd;
957 2227
958 for (fd = anfdmax; fd--; ) 2228 for (fd = anfdmax; fd--; )
… …
962 break; 2232 break;
963 } 2233 }
964} 2234}
965 2235
966/* 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 */
967static void noinline 2237ecb_noinline
2238static void
968fd_rearm_all (EV_P) 2239fd_rearm_all (EV_P)
969{ 2240{
970 int fd; 2241 int fd;
971 2242
972 for (fd = 0; fd < anfdmax; ++fd) 2243 for (fd = 0; fd < anfdmax; ++fd)
… …
976 anfds [fd].emask = 0; 2247 anfds [fd].emask = 0;
977 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); 2248 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
978 } 2249 }
979} 2250}
980 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
981/*****************************************************************************/ 2266/*****************************************************************************/
982 2267
983/* 2268/*
984 * 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
985 * 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
986 * the branching factor of the d-tree. 2271 * the branching factor of the d-tree.
987 */ 2272 */
988 2273
989/* 2274/*
… …
1011 ev_tstamp minat; 2296 ev_tstamp minat;
1012 ANHE *minpos; 2297 ANHE *minpos;
1013 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; 2298 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
1014 2299
1015 /* find minimum child */ 2300 /* find minimum child */
1016 if (expect_true (pos + DHEAP - 1 < E)) 2301 if (ecb_expect_true (pos + DHEAP - 1 < E))
1017 { 2302 {
1018 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2303 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1019 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));
1020 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));
1021 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));
… …
1057 2342
1058 for (;;) 2343 for (;;)
1059 { 2344 {
1060 int c = k << 1; 2345 int c = k << 1;
1061 2346
1062 if (c > N + HEAP0 - 1) 2347 if (c >= N + HEAP0)
1063 break; 2348 break;
1064 2349
1065 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])
1066 ? 1 : 0; 2351 ? 1 : 0;
1067 2352
… …
1103 2388
1104/* move an element suitably so it is in a correct place */ 2389/* move an element suitably so it is in a correct place */
1105inline_size void 2390inline_size void
1106adjustheap (ANHE *heap, int N, int k) 2391adjustheap (ANHE *heap, int N, int k)
1107{ 2392{
1108 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)]))
1109 upheap (heap, k); 2394 upheap (heap, k);
1110 else 2395 else
1111 downheap (heap, N, k); 2396 downheap (heap, N, k);
1112} 2397}
1113 2398
… …
1137 2422
1138static ANSIG signals [EV_NSIG - 1]; 2423static ANSIG signals [EV_NSIG - 1];
1139 2424
1140/*****************************************************************************/ 2425/*****************************************************************************/
1141 2426
1142/* used to prepare libev internal fd's */ 2427#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1143/* 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
1144inline_speed void 2475inline_speed void
1145fd_intern (int fd) 2476evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1146{ 2477{
1147#ifdef _WIN32 2478 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1148 unsigned long arg = 1;
1149 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1150#else
1151 fcntl (fd, F_SETFD, FD_CLOEXEC);
1152 fcntl (fd, F_SETFL, O_NONBLOCK);
1153#endif
1154}
1155 2479
1156static void noinline 2480 if (ecb_expect_true (*flag))
1157evpipe_init (EV_P) 2481 return;
1158{ 2482
1159 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)
1160 { 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
1161#if EV_USE_EVENTFD 2499#if EV_USE_EVENTFD
1162 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2500 if (evpipe [0] < 0)
1163 if (evfd < 0 && errno == EINVAL)
1164 evfd = eventfd (0, 0);
1165
1166 if (evfd >= 0)
1167 { 2501 {
1168 evpipe [0] = -1; 2502 uint64_t counter = 1;
1169 fd_intern (evfd); /* doing it twice doesn't hurt */ 2503 write (evpipe [1], &counter, sizeof (uint64_t));
1170 ev_io_set (&pipe_w, evfd, EV_READ);
1171 } 2504 }
1172 else 2505 else
1173#endif 2506#endif
1174 { 2507 {
1175 while (pipe (evpipe)) 2508#ifdef _WIN32
1176 ev_syserr ("(libev) error creating signal/async pipe"); 2509 WSABUF buf;
1177 2510 DWORD sent;
1178 fd_intern (evpipe [0]); 2511 buf.buf = (char *)&buf;
1179 fd_intern (evpipe [1]); 2512 buf.len = 1;
1180 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
1181 } 2517 }
1182
1183 ev_io_start (EV_A_ &pipe_w);
1184 ev_unref (EV_A); /* watcher should not keep loop alive */
1185 }
1186}
1187
1188inline_size void
1189evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1190{
1191 if (!*flag)
1192 {
1193 int old_errno = errno; /* save errno because write might clobber it */
1194
1195 *flag = 1;
1196
1197#if EV_USE_EVENTFD
1198 if (evfd >= 0)
1199 {
1200 uint64_t counter = 1;
1201 write (evfd, &counter, sizeof (uint64_t));
1202 }
1203 else
1204#endif
1205 write (evpipe [1], &old_errno, 1);
1206 2518
1207 errno = old_errno; 2519 errno = old_errno;
1208 } 2520 }
1209} 2521}
1210 2522
… …
1213static void 2525static void
1214pipecb (EV_P_ ev_io *iow, int revents) 2526pipecb (EV_P_ ev_io *iow, int revents)
1215{ 2527{
1216 int i; 2528 int i;
1217 2529
2530 if (revents & EV_READ)
2531 {
1218#if EV_USE_EVENTFD 2532#if EV_USE_EVENTFD
1219 if (evfd >= 0) 2533 if (evpipe [0] < 0)
1220 { 2534 {
1221 uint64_t counter; 2535 uint64_t counter;
1222 read (evfd, &counter, sizeof (uint64_t)); 2536 read (evpipe [1], &counter, sizeof (uint64_t));
1223 } 2537 }
1224 else 2538 else
1225#endif 2539#endif
1226 { 2540 {
1227 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
1228 read (evpipe [0], &dummy, 1); 2550 read (evpipe [0], &dummy, sizeof (dummy));
2551#endif
2552 }
1229 } 2553 }
1230 2554
2555 pipe_write_skipped = 0;
2556
2557 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2558
2559#if EV_SIGNAL_ENABLE
1231 if (sig_pending) 2560 if (sig_pending)
1232 { 2561 {
1233 sig_pending = 0; 2562 sig_pending = 0;
1234 2563
2564 ECB_MEMORY_FENCE;
2565
1235 for (i = EV_NSIG - 1; i--; ) 2566 for (i = EV_NSIG - 1; i--; )
1236 if (expect_false (signals [i].pending)) 2567 if (ecb_expect_false (signals [i].pending))
1237 ev_feed_signal_event (EV_A_ i + 1); 2568 ev_feed_signal_event (EV_A_ i + 1);
1238 } 2569 }
2570#endif
1239 2571
1240#if EV_ASYNC_ENABLE 2572#if EV_ASYNC_ENABLE
1241 if (async_pending) 2573 if (async_pending)
1242 { 2574 {
1243 async_pending = 0; 2575 async_pending = 0;
2576
2577 ECB_MEMORY_FENCE;
1244 2578
1245 for (i = asynccnt; i--; ) 2579 for (i = asynccnt; i--; )
1246 if (asyncs [i]->sent) 2580 if (asyncs [i]->sent)
1247 { 2581 {
1248 asyncs [i]->sent = 0; 2582 asyncs [i]->sent = 0;
2583 ECB_MEMORY_FENCE_RELEASE;
1249 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2584 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1250 } 2585 }
1251 } 2586 }
1252#endif 2587#endif
1253} 2588}
1254 2589
1255/*****************************************************************************/ 2590/*****************************************************************************/
1256 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
1257static void 2608static void
1258ev_sighandler (int signum) 2609ev_sighandler (int signum)
1259{ 2610{
1260#if EV_MULTIPLICITY
1261 EV_P = signals [signum - 1].loop;
1262#endif
1263
1264#if _WIN32 2611#ifdef _WIN32
1265 signal (signum, ev_sighandler); 2612 signal (signum, ev_sighandler);
1266#endif 2613#endif
1267 2614
1268 signals [signum - 1].pending = 1; 2615 ev_feed_signal (signum);
1269 evpipe_write (EV_A_ &sig_pending);
1270} 2616}
1271 2617
1272void noinline 2618ecb_noinline
2619void
1273ev_feed_signal_event (EV_P_ int signum) 2620ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
1274{ 2621{
1275 WL w; 2622 WL w;
1276 2623
1277 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2624 if (ecb_expect_false (signum <= 0 || signum >= EV_NSIG))
1278 return; 2625 return;
1279 2626
1280 --signum; 2627 --signum;
1281 2628
1282#if EV_MULTIPLICITY 2629#if EV_MULTIPLICITY
1283 /* it is permissible to try to feed a signal to the wrong loop */ 2630 /* it is permissible to try to feed a signal to the wrong loop */
1284 /* or, likely more useful, feeding a signal nobody is waiting for */ 2631 /* or, likely more useful, feeding a signal nobody is waiting for */
1285 2632
1286 if (expect_false (signals [signum].loop != EV_A)) 2633 if (ecb_expect_false (signals [signum].loop != EV_A))
1287 return; 2634 return;
1288#endif 2635#endif
1289 2636
1290 signals [signum].pending = 0; 2637 signals [signum].pending = 0;
2638 ECB_MEMORY_FENCE_RELEASE;
1291 2639
1292 for (w = signals [signum].head; w; w = w->next) 2640 for (w = signals [signum].head; w; w = w->next)
1293 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2641 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1294} 2642}
1295 2643
… …
1311 break; 2659 break;
1312 } 2660 }
1313} 2661}
1314#endif 2662#endif
1315 2663
2664#endif
2665
1316/*****************************************************************************/ 2666/*****************************************************************************/
1317 2667
2668#if EV_CHILD_ENABLE
1318static WL childs [EV_PID_HASHSIZE]; 2669static WL childs [EV_PID_HASHSIZE];
1319
1320#ifndef _WIN32
1321 2670
1322static ev_signal childev; 2671static ev_signal childev;
1323 2672
1324#ifndef WIFCONTINUED 2673#ifndef WIFCONTINUED
1325# define WIFCONTINUED(status) 0 2674# define WIFCONTINUED(status) 0
… …
1330child_reap (EV_P_ int chain, int pid, int status) 2679child_reap (EV_P_ int chain, int pid, int status)
1331{ 2680{
1332 ev_child *w; 2681 ev_child *w;
1333 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2682 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1334 2683
1335 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)
1336 { 2685 {
1337 if ((w->pid == pid || !w->pid) 2686 if ((w->pid == pid || !w->pid)
1338 && (!traced || (w->flags & 1))) 2687 && (!traced || (w->flags & 1)))
1339 { 2688 {
1340 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 */
… …
1365 /* 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 */
1366 /* 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 */
1367 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2716 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1368 2717
1369 child_reap (EV_A_ pid, pid, status); 2718 child_reap (EV_A_ pid, pid, status);
1370 if (EV_PID_HASHSIZE > 1) 2719 if ((EV_PID_HASHSIZE) > 1)
1371 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 */
1372} 2721}
1373 2722
1374#endif 2723#endif
1375 2724
1376/*****************************************************************************/ 2725/*****************************************************************************/
1377 2726
2727#if EV_USE_IOCP
2728# include "ev_iocp.c"
2729#endif
1378#if EV_USE_PORT 2730#if EV_USE_PORT
1379# include "ev_port.c" 2731# include "ev_port.c"
1380#endif 2732#endif
1381#if EV_USE_KQUEUE 2733#if EV_USE_KQUEUE
1382# include "ev_kqueue.c" 2734# include "ev_kqueue.c"
1383#endif 2735#endif
1384#if EV_USE_EPOLL 2736#if EV_USE_EPOLL
1385# include "ev_epoll.c" 2737# include "ev_epoll.c"
1386#endif 2738#endif
2739#if EV_USE_LINUXAIO
2740# include "ev_linuxaio.c"
2741#endif
1387#if EV_USE_POLL 2742#if EV_USE_POLL
1388# include "ev_poll.c" 2743# include "ev_poll.c"
1389#endif 2744#endif
1390#if EV_USE_SELECT 2745#if EV_USE_SELECT
1391# include "ev_select.c" 2746# include "ev_select.c"
1392#endif 2747#endif
1393 2748
1394int 2749ecb_cold int
1395ev_version_major (void) 2750ev_version_major (void) EV_NOEXCEPT
1396{ 2751{
1397 return EV_VERSION_MAJOR; 2752 return EV_VERSION_MAJOR;
1398} 2753}
1399 2754
1400int 2755ecb_cold int
1401ev_version_minor (void) 2756ev_version_minor (void) EV_NOEXCEPT
1402{ 2757{
1403 return EV_VERSION_MINOR; 2758 return EV_VERSION_MINOR;
1404} 2759}
1405 2760
1406/* 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 */
1407int inline_size 2762inline_size ecb_cold int
1408enable_secure (void) 2763enable_secure (void)
1409{ 2764{
1410#ifdef _WIN32 2765#ifdef _WIN32
1411 return 0; 2766 return 0;
1412#else 2767#else
1413 return getuid () != geteuid () 2768 return getuid () != geteuid ()
1414 || getgid () != getegid (); 2769 || getgid () != getegid ();
1415#endif 2770#endif
1416} 2771}
1417 2772
2773ecb_cold
1418unsigned int 2774unsigned int
1419ev_supported_backends (void) 2775ev_supported_backends (void) EV_NOEXCEPT
1420{ 2776{
1421 unsigned int flags = 0; 2777 unsigned int flags = 0;
1422 2778
1423 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2779 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1424 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2780 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
1425 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 2781 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2782 if (EV_USE_LINUXAIO) flags |= EVBACKEND_LINUXAIO;
1426 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 2783 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
1427 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2784 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
1428 2785
1429 return flags; 2786 return flags;
1430} 2787}
1431 2788
2789ecb_cold
1432unsigned int 2790unsigned int
1433ev_recommended_backends (void) 2791ev_recommended_backends (void) EV_NOEXCEPT
1434{ 2792{
1435 unsigned int flags = ev_supported_backends (); 2793 unsigned int flags = ev_supported_backends ();
1436 2794
1437#ifndef __NetBSD__ 2795#ifndef __NetBSD__
1438 /* kqueue is borked on everything but netbsd apparently */ 2796 /* kqueue is borked on everything but netbsd apparently */
… …
1442#ifdef __APPLE__ 2800#ifdef __APPLE__
1443 /* only select works correctly on that "unix-certified" platform */ 2801 /* only select works correctly on that "unix-certified" platform */
1444 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2802 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1445 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 */
1446#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
1447 2813
1448 return flags; 2814 return flags;
1449} 2815}
1450 2816
2817ecb_cold
1451unsigned int 2818unsigned int
1452ev_embeddable_backends (void) 2819ev_embeddable_backends (void) EV_NOEXCEPT
1453{ 2820{
1454 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2821 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1455 2822
1456 /* 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 */
1457 /* please fix it and tell me how to detect the fix */ 2824 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1458 flags &= ~EVBACKEND_EPOLL; 2825 flags &= ~EVBACKEND_EPOLL;
1459 2826
1460 return flags; 2827 return flags;
1461} 2828}
1462 2829
1463unsigned int 2830unsigned int
1464ev_backend (EV_P) 2831ev_backend (EV_P) EV_NOEXCEPT
1465{ 2832{
1466 return backend; 2833 return backend;
1467} 2834}
1468 2835
1469#if EV_MINIMAL < 2 2836#if EV_FEATURE_API
1470unsigned int 2837unsigned int
1471ev_loop_count (EV_P) 2838ev_iteration (EV_P) EV_NOEXCEPT
1472{ 2839{
1473 return loop_count; 2840 return loop_count;
1474} 2841}
1475 2842
1476unsigned int 2843unsigned int
1477ev_loop_depth (EV_P) 2844ev_depth (EV_P) EV_NOEXCEPT
1478{ 2845{
1479 return loop_depth; 2846 return loop_depth;
1480} 2847}
1481 2848
1482void 2849void
1483ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2850ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1484{ 2851{
1485 io_blocktime = interval; 2852 io_blocktime = interval;
1486} 2853}
1487 2854
1488void 2855void
1489ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2856ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1490{ 2857{
1491 timeout_blocktime = interval; 2858 timeout_blocktime = interval;
1492} 2859}
1493 2860
1494void 2861void
1495ev_set_userdata (EV_P_ void *data) 2862ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
1496{ 2863{
1497 userdata = data; 2864 userdata = data;
1498} 2865}
1499 2866
1500void * 2867void *
1501ev_userdata (EV_P) 2868ev_userdata (EV_P) EV_NOEXCEPT
1502{ 2869{
1503 return userdata; 2870 return userdata;
1504} 2871}
1505 2872
2873void
1506void 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
1507{ 2875{
1508 invoke_cb = invoke_pending_cb; 2876 invoke_cb = invoke_pending_cb;
1509} 2877}
1510 2878
2879void
1511void 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
1512{ 2881{
1513 release_cb = release; 2882 release_cb = release;
1514 acquire_cb = acquire; 2883 acquire_cb = acquire;
1515} 2884}
1516#endif 2885#endif
1517 2886
1518/* initialise a loop structure, must be zero-initialised */ 2887/* initialise a loop structure, must be zero-initialised */
1519static void noinline 2888ecb_noinline ecb_cold
2889static void
1520loop_init (EV_P_ unsigned int flags) 2890loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
1521{ 2891{
1522 if (!backend) 2892 if (!backend)
1523 { 2893 {
2894 origflags = flags;
2895
1524#if EV_USE_REALTIME 2896#if EV_USE_REALTIME
1525 if (!have_realtime) 2897 if (!have_realtime)
1526 { 2898 {
1527 struct timespec ts; 2899 struct timespec ts;
1528 2900
… …
1550 if (!(flags & EVFLAG_NOENV) 2922 if (!(flags & EVFLAG_NOENV)
1551 && !enable_secure () 2923 && !enable_secure ()
1552 && getenv ("LIBEV_FLAGS")) 2924 && getenv ("LIBEV_FLAGS"))
1553 flags = atoi (getenv ("LIBEV_FLAGS")); 2925 flags = atoi (getenv ("LIBEV_FLAGS"));
1554 2926
1555 ev_rt_now = ev_time (); 2927 ev_rt_now = ev_time ();
1556 mn_now = get_clock (); 2928 mn_now = get_clock ();
1557 now_floor = mn_now; 2929 now_floor = mn_now;
1558 rtmn_diff = ev_rt_now - mn_now; 2930 rtmn_diff = ev_rt_now - mn_now;
1559#if EV_MINIMAL < 2 2931#if EV_FEATURE_API
1560 invoke_cb = ev_invoke_pending; 2932 invoke_cb = ev_invoke_pending;
1561#endif 2933#endif
1562 2934
1563 io_blocktime = 0.; 2935 io_blocktime = 0.;
1564 timeout_blocktime = 0.; 2936 timeout_blocktime = 0.;
1565 backend = 0; 2937 backend = 0;
1566 backend_fd = -1; 2938 backend_fd = -1;
1567 sig_pending = 0; 2939 sig_pending = 0;
1568#if EV_ASYNC_ENABLE 2940#if EV_ASYNC_ENABLE
1569 async_pending = 0; 2941 async_pending = 0;
1570#endif 2942#endif
2943 pipe_write_skipped = 0;
2944 pipe_write_wanted = 0;
2945 evpipe [0] = -1;
2946 evpipe [1] = -1;
1571#if EV_USE_INOTIFY 2947#if EV_USE_INOTIFY
1572 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2948 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1573#endif 2949#endif
1574#if EV_USE_SIGNALFD 2950#if EV_USE_SIGNALFD
1575 sigfd = flags & EVFLAG_NOSIGFD ? -1 : -2; 2951 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1576#endif 2952#endif
1577 2953
1578 if (!(flags & 0x0000ffffU)) 2954 if (!(flags & EVBACKEND_MASK))
1579 flags |= ev_recommended_backends (); 2955 flags |= ev_recommended_backends ();
1580 2956
2957#if EV_USE_IOCP
2958 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2959#endif
1581#if EV_USE_PORT 2960#if EV_USE_PORT
1582 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2961 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1583#endif 2962#endif
1584#if EV_USE_KQUEUE 2963#if EV_USE_KQUEUE
1585 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);
1586#endif 2968#endif
1587#if EV_USE_EPOLL 2969#if EV_USE_EPOLL
1588 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 2970 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
1589#endif 2971#endif
1590#if EV_USE_POLL 2972#if EV_USE_POLL
1591 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 2973 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
1592#endif 2974#endif
1593#if EV_USE_SELECT 2975#if EV_USE_SELECT
1594 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2976 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
1595#endif 2977#endif
1596 2978
1597 ev_prepare_init (&pending_w, pendingcb); 2979 ev_prepare_init (&pending_w, pendingcb);
1598 2980
2981#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1599 ev_init (&pipe_w, pipecb); 2982 ev_init (&pipe_w, pipecb);
1600 ev_set_priority (&pipe_w, EV_MAXPRI); 2983 ev_set_priority (&pipe_w, EV_MAXPRI);
2984#endif
1601 } 2985 }
1602} 2986}
1603 2987
1604/* free up a loop structure */ 2988/* free up a loop structure */
1605static void noinline 2989ecb_cold
2990void
1606loop_destroy (EV_P) 2991ev_loop_destroy (EV_P)
1607{ 2992{
1608 int i; 2993 int i;
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
1609 3017
1610 if (ev_is_active (&pipe_w)) 3018 if (ev_is_active (&pipe_w))
1611 { 3019 {
1612 /*ev_ref (EV_A);*/ 3020 /*ev_ref (EV_A);*/
1613 /*ev_io_stop (EV_A_ &pipe_w);*/ 3021 /*ev_io_stop (EV_A_ &pipe_w);*/
1614 3022
1615#if EV_USE_EVENTFD 3023 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1616 if (evfd >= 0) 3024 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1617 close (evfd);
1618#endif
1619
1620 if (evpipe [0] >= 0)
1621 {
1622 close (evpipe [0]);
1623 close (evpipe [1]);
1624 }
1625 } 3025 }
1626 3026
1627#if EV_USE_SIGNALFD 3027#if EV_USE_SIGNALFD
1628 if (ev_is_active (&sigfd_w)) 3028 if (ev_is_active (&sigfd_w))
1629 {
1630 /*ev_ref (EV_A);*/
1631 /*ev_io_stop (EV_A_ &sigfd_w);*/
1632
1633 close (sigfd); 3029 close (sigfd);
1634 }
1635#endif 3030#endif
1636 3031
1637#if EV_USE_INOTIFY 3032#if EV_USE_INOTIFY
1638 if (fs_fd >= 0) 3033 if (fs_fd >= 0)
1639 close (fs_fd); 3034 close (fs_fd);
1640#endif 3035#endif
1641 3036
1642 if (backend_fd >= 0) 3037 if (backend_fd >= 0)
1643 close (backend_fd); 3038 close (backend_fd);
1644 3039
3040#if EV_USE_IOCP
3041 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
3042#endif
1645#if EV_USE_PORT 3043#if EV_USE_PORT
1646 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3044 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1647#endif 3045#endif
1648#if EV_USE_KQUEUE 3046#if EV_USE_KQUEUE
1649 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);
1650#endif 3051#endif
1651#if EV_USE_EPOLL 3052#if EV_USE_EPOLL
1652 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3053 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
1653#endif 3054#endif
1654#if EV_USE_POLL 3055#if EV_USE_POLL
1655 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3056 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
1656#endif 3057#endif
1657#if EV_USE_SELECT 3058#if EV_USE_SELECT
1658 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3059 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
1659#endif 3060#endif
1660 3061
1661 for (i = NUMPRI; i--; ) 3062 for (i = NUMPRI; i--; )
1662 { 3063 {
1663 array_free (pending, [i]); 3064 array_free (pending, [i]);
… …
1676 array_free (periodic, EMPTY); 3077 array_free (periodic, EMPTY);
1677#endif 3078#endif
1678#if EV_FORK_ENABLE 3079#if EV_FORK_ENABLE
1679 array_free (fork, EMPTY); 3080 array_free (fork, EMPTY);
1680#endif 3081#endif
3082#if EV_CLEANUP_ENABLE
3083 array_free (cleanup, EMPTY);
3084#endif
1681 array_free (prepare, EMPTY); 3085 array_free (prepare, EMPTY);
1682 array_free (check, EMPTY); 3086 array_free (check, EMPTY);
1683#if EV_ASYNC_ENABLE 3087#if EV_ASYNC_ENABLE
1684 array_free (async, EMPTY); 3088 array_free (async, EMPTY);
1685#endif 3089#endif
1686 3090
1687 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
1688} 3101}
1689 3102
1690#if EV_USE_INOTIFY 3103#if EV_USE_INOTIFY
1691inline_size void infy_fork (EV_P); 3104inline_size void infy_fork (EV_P);
1692#endif 3105#endif
1693 3106
1694inline_size void 3107inline_size void
1695loop_fork (EV_P) 3108loop_fork (EV_P)
1696{ 3109{
1697#if EV_USE_PORT 3110#if EV_USE_PORT
1698 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3111 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1699#endif 3112#endif
1700#if EV_USE_KQUEUE 3113#if EV_USE_KQUEUE
1701 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);
1702#endif 3118#endif
1703#if EV_USE_EPOLL 3119#if EV_USE_EPOLL
1704 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3120 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
1705#endif 3121#endif
1706#if EV_USE_INOTIFY 3122#if EV_USE_INOTIFY
1707 infy_fork (EV_A); 3123 infy_fork (EV_A);
1708#endif 3124#endif
1709 3125
3126#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1710 if (ev_is_active (&pipe_w)) 3127 if (ev_is_active (&pipe_w) && postfork != 2)
1711 { 3128 {
1712 /* this "locks" the handlers against writing to the pipe */ 3129 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1713 /* while we modify the fd vars */
1714 sig_pending = 1;
1715#if EV_ASYNC_ENABLE
1716 async_pending = 1;
1717#endif
1718 3130
1719 ev_ref (EV_A); 3131 ev_ref (EV_A);
1720 ev_io_stop (EV_A_ &pipe_w); 3132 ev_io_stop (EV_A_ &pipe_w);
1721 3133
1722#if EV_USE_EVENTFD
1723 if (evfd >= 0)
1724 close (evfd);
1725#endif
1726
1727 if (evpipe [0] >= 0) 3134 if (evpipe [0] >= 0)
1728 { 3135 EV_WIN32_CLOSE_FD (evpipe [0]);
1729 close (evpipe [0]);
1730 close (evpipe [1]);
1731 }
1732 3136
1733 evpipe_init (EV_A); 3137 evpipe_init (EV_A);
1734 /* now iterate over everything, in case we missed something */ 3138 /* iterate over everything, in case we missed something before */
1735 pipecb (EV_A_ &pipe_w, EV_READ); 3139 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1736 } 3140 }
3141#endif
1737 3142
1738 postfork = 0; 3143 postfork = 0;
1739} 3144}
1740 3145
1741#if EV_MULTIPLICITY 3146#if EV_MULTIPLICITY
1742 3147
3148ecb_cold
1743struct ev_loop * 3149struct ev_loop *
1744ev_loop_new (unsigned int flags) 3150ev_loop_new (unsigned int flags) EV_NOEXCEPT
1745{ 3151{
1746 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3152 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1747 3153
1748 memset (EV_A, 0, sizeof (struct ev_loop)); 3154 memset (EV_A, 0, sizeof (struct ev_loop));
1749 loop_init (EV_A_ flags); 3155 loop_init (EV_A_ flags);
1750 3156
1751 if (ev_backend (EV_A)) 3157 if (ev_backend (EV_A))
1752 return EV_A; 3158 return EV_A;
1753 3159
3160 ev_free (EV_A);
1754 return 0; 3161 return 0;
1755} 3162}
1756 3163
1757void
1758ev_loop_destroy (EV_P)
1759{
1760 loop_destroy (EV_A);
1761 ev_free (loop);
1762}
1763
1764void
1765ev_loop_fork (EV_P)
1766{
1767 postfork = 1; /* must be in line with ev_default_fork */
1768}
1769#endif /* multiplicity */ 3164#endif /* multiplicity */
1770 3165
1771#if EV_VERIFY 3166#if EV_VERIFY
1772static void noinline 3167ecb_noinline ecb_cold
3168static void
1773verify_watcher (EV_P_ W w) 3169verify_watcher (EV_P_ W w)
1774{ 3170{
1775 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));
1776 3172
1777 if (w->pending) 3173 if (w->pending)
1778 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));
1779} 3175}
1780 3176
1781static void noinline 3177ecb_noinline ecb_cold
3178static void
1782verify_heap (EV_P_ ANHE *heap, int N) 3179verify_heap (EV_P_ ANHE *heap, int N)
1783{ 3180{
1784 int i; 3181 int i;
1785 3182
1786 for (i = HEAP0; i < N + HEAP0; ++i) 3183 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1791 3188
1792 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3189 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1793 } 3190 }
1794} 3191}
1795 3192
1796static void noinline 3193ecb_noinline ecb_cold
3194static void
1797array_verify (EV_P_ W *ws, int cnt) 3195array_verify (EV_P_ W *ws, int cnt)
1798{ 3196{
1799 while (cnt--) 3197 while (cnt--)
1800 { 3198 {
1801 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3199 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1802 verify_watcher (EV_A_ ws [cnt]); 3200 verify_watcher (EV_A_ ws [cnt]);
1803 } 3201 }
1804} 3202}
1805#endif 3203#endif
1806 3204
1807#if EV_MINIMAL < 2 3205#if EV_FEATURE_API
1808void 3206void ecb_cold
1809ev_loop_verify (EV_P) 3207ev_verify (EV_P) EV_NOEXCEPT
1810{ 3208{
1811#if EV_VERIFY 3209#if EV_VERIFY
1812 int i; 3210 int i;
1813 WL w; 3211 WL w, w2;
1814 3212
1815 assert (activecnt >= -1); 3213 assert (activecnt >= -1);
1816 3214
1817 assert (fdchangemax >= fdchangecnt); 3215 assert (fdchangemax >= fdchangecnt);
1818 for (i = 0; i < fdchangecnt; ++i) 3216 for (i = 0; i < fdchangecnt; ++i)
1819 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3217 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1820 3218
1821 assert (anfdmax >= 0); 3219 assert (anfdmax >= 0);
1822 for (i = 0; i < anfdmax; ++i) 3220 for (i = 0; i < anfdmax; ++i)
3221 {
3222 int j = 0;
3223
1823 for (w = anfds [i].head; w; w = w->next) 3224 for (w = w2 = anfds [i].head; w; w = w->next)
1824 { 3225 {
1825 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
1826 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));
1827 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));
1828 } 3236 }
3237 }
1829 3238
1830 assert (timermax >= timercnt); 3239 assert (timermax >= timercnt);
1831 verify_heap (EV_A_ timers, timercnt); 3240 verify_heap (EV_A_ timers, timercnt);
1832 3241
1833#if EV_PERIODIC_ENABLE 3242#if EV_PERIODIC_ENABLE
… …
1848#if EV_FORK_ENABLE 3257#if EV_FORK_ENABLE
1849 assert (forkmax >= forkcnt); 3258 assert (forkmax >= forkcnt);
1850 array_verify (EV_A_ (W *)forks, forkcnt); 3259 array_verify (EV_A_ (W *)forks, forkcnt);
1851#endif 3260#endif
1852 3261
3262#if EV_CLEANUP_ENABLE
3263 assert (cleanupmax >= cleanupcnt);
3264 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
3265#endif
3266
1853#if EV_ASYNC_ENABLE 3267#if EV_ASYNC_ENABLE
1854 assert (asyncmax >= asynccnt); 3268 assert (asyncmax >= asynccnt);
1855 array_verify (EV_A_ (W *)asyncs, asynccnt); 3269 array_verify (EV_A_ (W *)asyncs, asynccnt);
1856#endif 3270#endif
1857 3271
3272#if EV_PREPARE_ENABLE
1858 assert (preparemax >= preparecnt); 3273 assert (preparemax >= preparecnt);
1859 array_verify (EV_A_ (W *)prepares, preparecnt); 3274 array_verify (EV_A_ (W *)prepares, preparecnt);
3275#endif
1860 3276
3277#if EV_CHECK_ENABLE
1861 assert (checkmax >= checkcnt); 3278 assert (checkmax >= checkcnt);
1862 array_verify (EV_A_ (W *)checks, checkcnt); 3279 array_verify (EV_A_ (W *)checks, checkcnt);
3280#endif
1863 3281
1864# if 0 3282# if 0
3283#if EV_CHILD_ENABLE
1865 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)
1866 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending) 3285 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
3286#endif
1867# endif 3287# endif
1868#endif 3288#endif
1869} 3289}
1870#endif 3290#endif
1871 3291
1872#if EV_MULTIPLICITY 3292#if EV_MULTIPLICITY
3293ecb_cold
1873struct ev_loop * 3294struct ev_loop *
1874ev_default_loop_init (unsigned int flags)
1875#else 3295#else
1876int 3296int
3297#endif
1877ev_default_loop (unsigned int flags) 3298ev_default_loop (unsigned int flags) EV_NOEXCEPT
1878#endif
1879{ 3299{
1880 if (!ev_default_loop_ptr) 3300 if (!ev_default_loop_ptr)
1881 { 3301 {
1882#if EV_MULTIPLICITY 3302#if EV_MULTIPLICITY
1883 EV_P = ev_default_loop_ptr = &default_loop_struct; 3303 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1887 3307
1888 loop_init (EV_A_ flags); 3308 loop_init (EV_A_ flags);
1889 3309
1890 if (ev_backend (EV_A)) 3310 if (ev_backend (EV_A))
1891 { 3311 {
1892#ifndef _WIN32 3312#if EV_CHILD_ENABLE
1893 ev_signal_init (&childev, childcb, SIGCHLD); 3313 ev_signal_init (&childev, childcb, SIGCHLD);
1894 ev_set_priority (&childev, EV_MAXPRI); 3314 ev_set_priority (&childev, EV_MAXPRI);
1895 ev_signal_start (EV_A_ &childev); 3315 ev_signal_start (EV_A_ &childev);
1896 ev_unref (EV_A); /* child watcher should not keep loop alive */ 3316 ev_unref (EV_A); /* child watcher should not keep loop alive */
1897#endif 3317#endif
… …
1902 3322
1903 return ev_default_loop_ptr; 3323 return ev_default_loop_ptr;
1904} 3324}
1905 3325
1906void 3326void
1907ev_default_destroy (void) 3327ev_loop_fork (EV_P) EV_NOEXCEPT
1908{ 3328{
1909#if EV_MULTIPLICITY 3329 postfork = 1;
1910 EV_P = ev_default_loop_ptr;
1911#endif
1912
1913 ev_default_loop_ptr = 0;
1914
1915#ifndef _WIN32
1916 ev_ref (EV_A); /* child watcher */
1917 ev_signal_stop (EV_A_ &childev);
1918#endif
1919
1920 loop_destroy (EV_A);
1921}
1922
1923void
1924ev_default_fork (void)
1925{
1926#if EV_MULTIPLICITY
1927 EV_P = ev_default_loop_ptr;
1928#endif
1929
1930 postfork = 1; /* must be in line with ev_loop_fork */
1931} 3330}
1932 3331
1933/*****************************************************************************/ 3332/*****************************************************************************/
1934 3333
1935void 3334void
… …
1937{ 3336{
1938 EV_CB_INVOKE ((W)w, revents); 3337 EV_CB_INVOKE ((W)w, revents);
1939} 3338}
1940 3339
1941unsigned int 3340unsigned int
1942ev_pending_count (EV_P) 3341ev_pending_count (EV_P) EV_NOEXCEPT
1943{ 3342{
1944 int pri; 3343 int pri;
1945 unsigned int count = 0; 3344 unsigned int count = 0;
1946 3345
1947 for (pri = NUMPRI; pri--; ) 3346 for (pri = NUMPRI; pri--; )
1948 count += pendingcnt [pri]; 3347 count += pendingcnt [pri];
1949 3348
1950 return count; 3349 return count;
1951} 3350}
1952 3351
1953void noinline 3352ecb_noinline
3353void
1954ev_invoke_pending (EV_P) 3354ev_invoke_pending (EV_P)
1955{ 3355{
1956 int pri; 3356 pendingpri = NUMPRI;
1957 3357
1958 for (pri = NUMPRI; pri--; ) 3358 do
3359 {
3360 --pendingpri;
3361
3362 /* pendingpri possibly gets modified in the inner loop */
1959 while (pendingcnt [pri]) 3363 while (pendingcnt [pendingpri])
1960 { 3364 {
1961 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3365 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
1962 3366
1963 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1964 /* ^ this is no longer true, as pending_w could be here */
1965
1966 p->w->pending = 0; 3367 p->w->pending = 0;
1967 EV_CB_INVOKE (p->w, p->events); 3368 EV_CB_INVOKE (p->w, p->events);
1968 EV_FREQUENT_CHECK; 3369 EV_FREQUENT_CHECK;
1969 } 3370 }
3371 }
3372 while (pendingpri);
1970} 3373}
1971 3374
1972#if EV_IDLE_ENABLE 3375#if EV_IDLE_ENABLE
1973/* make idle watchers pending. this handles the "call-idle */ 3376/* make idle watchers pending. this handles the "call-idle */
1974/* only when higher priorities are idle" logic */ 3377/* only when higher priorities are idle" logic */
1975inline_size void 3378inline_size void
1976idle_reify (EV_P) 3379idle_reify (EV_P)
1977{ 3380{
1978 if (expect_false (idleall)) 3381 if (ecb_expect_false (idleall))
1979 { 3382 {
1980 int pri; 3383 int pri;
1981 3384
1982 for (pri = NUMPRI; pri--; ) 3385 for (pri = NUMPRI; pri--; )
1983 { 3386 {
… …
2026 EV_FREQUENT_CHECK; 3429 EV_FREQUENT_CHECK;
2027 feed_reverse (EV_A_ (W)w); 3430 feed_reverse (EV_A_ (W)w);
2028 } 3431 }
2029 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 3432 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
2030 3433
2031 feed_reverse_done (EV_A_ EV_TIMEOUT); 3434 feed_reverse_done (EV_A_ EV_TIMER);
2032 } 3435 }
2033} 3436}
2034 3437
2035#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
2036/* make periodics pending */ 3465/* make periodics pending */
2037inline_size void 3466inline_size void
2038periodics_reify (EV_P) 3467periodics_reify (EV_P)
2039{ 3468{
2040 EV_FREQUENT_CHECK; 3469 EV_FREQUENT_CHECK;
2041 3470
2042 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3471 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2043 { 3472 {
2044 int feed_count = 0;
2045
2046 do 3473 do
2047 { 3474 {
2048 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3475 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2049 3476
2050 /*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)));*/
… …
2059 ANHE_at_cache (periodics [HEAP0]); 3486 ANHE_at_cache (periodics [HEAP0]);
2060 downheap (periodics, periodiccnt, HEAP0); 3487 downheap (periodics, periodiccnt, HEAP0);
2061 } 3488 }
2062 else if (w->interval) 3489 else if (w->interval)
2063 { 3490 {
2064 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3491 periodic_recalc (EV_A_ w);
2065 /* if next trigger time is not sufficiently in the future, put it there */
2066 /* this might happen because of floating point inexactness */
2067 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2068 {
2069 ev_at (w) += w->interval;
2070
2071 /* if interval is unreasonably low we might still have a time in the past */
2072 /* so correct this. this will make the periodic very inexact, but the user */
2073 /* has effectively asked to get triggered more often than possible */
2074 if (ev_at (w) < ev_rt_now)
2075 ev_at (w) = ev_rt_now;
2076 }
2077
2078 ANHE_at_cache (periodics [HEAP0]); 3492 ANHE_at_cache (periodics [HEAP0]);
2079 downheap (periodics, periodiccnt, HEAP0); 3493 downheap (periodics, periodiccnt, HEAP0);
2080 } 3494 }
2081 else 3495 else
2082 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3496 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2089 feed_reverse_done (EV_A_ EV_PERIODIC); 3503 feed_reverse_done (EV_A_ EV_PERIODIC);
2090 } 3504 }
2091} 3505}
2092 3506
2093/* simply recalculate all periodics */ 3507/* simply recalculate all periodics */
2094/* 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? */
2095static void noinline 3509ecb_noinline ecb_cold
3510static void
2096periodics_reschedule (EV_P) 3511periodics_reschedule (EV_P)
2097{ 3512{
2098 int i; 3513 int i;
2099 3514
2100 /* adjust periodics after time jump */ 3515 /* adjust periodics after time jump */
… …
2103 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3518 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2104 3519
2105 if (w->reschedule_cb) 3520 if (w->reschedule_cb)
2106 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3521 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2107 else if (w->interval) 3522 else if (w->interval)
2108 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3523 periodic_recalc (EV_A_ w);
2109 3524
2110 ANHE_at_cache (periodics [i]); 3525 ANHE_at_cache (periodics [i]);
2111 } 3526 }
2112 3527
2113 reheap (periodics, periodiccnt); 3528 reheap (periodics, periodiccnt);
2114} 3529}
2115#endif 3530#endif
2116 3531
2117/* adjust all timers by a given offset */ 3532/* adjust all timers by a given offset */
2118static void noinline 3533ecb_noinline ecb_cold
3534static void
2119timers_reschedule (EV_P_ ev_tstamp adjust) 3535timers_reschedule (EV_P_ ev_tstamp adjust)
2120{ 3536{
2121 int i; 3537 int i;
2122 3538
2123 for (i = 0; i < timercnt; ++i) 3539 for (i = 0; i < timercnt; ++i)
… …
2127 ANHE_at_cache (*he); 3543 ANHE_at_cache (*he);
2128 } 3544 }
2129} 3545}
2130 3546
2131/* fetch new monotonic and realtime times from the kernel */ 3547/* fetch new monotonic and realtime times from the kernel */
2132/* also detetc if there was a timejump, and act accordingly */ 3548/* also detect if there was a timejump, and act accordingly */
2133inline_speed void 3549inline_speed void
2134time_update (EV_P_ ev_tstamp max_block) 3550time_update (EV_P_ ev_tstamp max_block)
2135{ 3551{
2136#if EV_USE_MONOTONIC 3552#if EV_USE_MONOTONIC
2137 if (expect_true (have_monotonic)) 3553 if (ecb_expect_true (have_monotonic))
2138 { 3554 {
2139 int i; 3555 int i;
2140 ev_tstamp odiff = rtmn_diff; 3556 ev_tstamp odiff = rtmn_diff;
2141 3557
2142 mn_now = get_clock (); 3558 mn_now = get_clock ();
2143 3559
2144 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3560 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
2145 /* interpolate in the meantime */ 3561 /* interpolate in the meantime */
2146 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 3562 if (ecb_expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
2147 { 3563 {
2148 ev_rt_now = rtmn_diff + mn_now; 3564 ev_rt_now = rtmn_diff + mn_now;
2149 return; 3565 return;
2150 } 3566 }
2151 3567
… …
2160 * 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
2161 * in the unlikely event of having been preempted here. 3577 * in the unlikely event of having been preempted here.
2162 */ 3578 */
2163 for (i = 4; --i; ) 3579 for (i = 4; --i; )
2164 { 3580 {
3581 ev_tstamp diff;
2165 rtmn_diff = ev_rt_now - mn_now; 3582 rtmn_diff = ev_rt_now - mn_now;
2166 3583
3584 diff = odiff - rtmn_diff;
3585
2167 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3586 if (ecb_expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2168 return; /* all is well */ 3587 return; /* all is well */
2169 3588
2170 ev_rt_now = ev_time (); 3589 ev_rt_now = ev_time ();
2171 mn_now = get_clock (); 3590 mn_now = get_clock ();
2172 now_floor = mn_now; 3591 now_floor = mn_now;
… …
2181 else 3600 else
2182#endif 3601#endif
2183 { 3602 {
2184 ev_rt_now = ev_time (); 3603 ev_rt_now = ev_time ();
2185 3604
2186 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))
2187 { 3606 {
2188 /* 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 */
2189 timers_reschedule (EV_A_ ev_rt_now - mn_now); 3608 timers_reschedule (EV_A_ ev_rt_now - mn_now);
2190#if EV_PERIODIC_ENABLE 3609#if EV_PERIODIC_ENABLE
2191 periodics_reschedule (EV_A); 3610 periodics_reschedule (EV_A);
… …
2194 3613
2195 mn_now = ev_rt_now; 3614 mn_now = ev_rt_now;
2196 } 3615 }
2197} 3616}
2198 3617
2199void 3618int
2200ev_loop (EV_P_ int flags) 3619ev_run (EV_P_ int flags)
2201{ 3620{
2202#if EV_MINIMAL < 2 3621#if EV_FEATURE_API
2203 ++loop_depth; 3622 ++loop_depth;
2204#endif 3623#endif
2205 3624
2206 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));
2207 3626
2208 loop_done = EVUNLOOP_CANCEL; 3627 loop_done = EVBREAK_CANCEL;
2209 3628
2210 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 */
2211 3630
2212 do 3631 do
2213 { 3632 {
2214#if EV_VERIFY >= 2 3633#if EV_VERIFY >= 2
2215 ev_loop_verify (EV_A); 3634 ev_verify (EV_A);
2216#endif 3635#endif
2217 3636
2218#ifndef _WIN32 3637#ifndef _WIN32
2219 if (expect_false (curpid)) /* penalise the forking check even more */ 3638 if (ecb_expect_false (curpid)) /* penalise the forking check even more */
2220 if (expect_false (getpid () != curpid)) 3639 if (ecb_expect_false (getpid () != curpid))
2221 { 3640 {
2222 curpid = getpid (); 3641 curpid = getpid ();
2223 postfork = 1; 3642 postfork = 1;
2224 } 3643 }
2225#endif 3644#endif
2226 3645
2227#if EV_FORK_ENABLE 3646#if EV_FORK_ENABLE
2228 /* we might have forked, so queue fork handlers */ 3647 /* we might have forked, so queue fork handlers */
2229 if (expect_false (postfork)) 3648 if (ecb_expect_false (postfork))
2230 if (forkcnt) 3649 if (forkcnt)
2231 { 3650 {
2232 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3651 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2233 EV_INVOKE_PENDING; 3652 EV_INVOKE_PENDING;
2234 } 3653 }
2235#endif 3654#endif
2236 3655
3656#if EV_PREPARE_ENABLE
2237 /* queue prepare watchers (and execute them) */ 3657 /* queue prepare watchers (and execute them) */
2238 if (expect_false (preparecnt)) 3658 if (ecb_expect_false (preparecnt))
2239 { 3659 {
2240 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3660 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2241 EV_INVOKE_PENDING; 3661 EV_INVOKE_PENDING;
2242 } 3662 }
3663#endif
2243 3664
2244 if (expect_false (loop_done)) 3665 if (ecb_expect_false (loop_done))
2245 break; 3666 break;
2246 3667
2247 /* we might have forked, so reify kernel state if necessary */ 3668 /* we might have forked, so reify kernel state if necessary */
2248 if (expect_false (postfork)) 3669 if (ecb_expect_false (postfork))
2249 loop_fork (EV_A); 3670 loop_fork (EV_A);
2250 3671
2251 /* update fd-related kernel structures */ 3672 /* update fd-related kernel structures */
2252 fd_reify (EV_A); 3673 fd_reify (EV_A);
2253 3674
2254 /* calculate blocking time */ 3675 /* calculate blocking time */
2255 { 3676 {
2256 ev_tstamp waittime = 0.; 3677 ev_tstamp waittime = 0.;
2257 ev_tstamp sleeptime = 0.; 3678 ev_tstamp sleeptime = 0.;
2258 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
2259 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3691 if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2260 { 3692 {
2261 /* remember old timestamp for io_blocktime calculation */
2262 ev_tstamp prev_mn_now = mn_now;
2263
2264 /* update time to cancel out callback processing overhead */
2265 time_update (EV_A_ 1e100);
2266
2267 waittime = MAX_BLOCKTIME; 3693 waittime = MAX_BLOCKTIME;
2268 3694
2269 if (timercnt) 3695 if (timercnt)
2270 { 3696 {
2271 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3697 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2272 if (waittime > to) waittime = to; 3698 if (waittime > to) waittime = to;
2273 } 3699 }
2274 3700
2275#if EV_PERIODIC_ENABLE 3701#if EV_PERIODIC_ENABLE
2276 if (periodiccnt) 3702 if (periodiccnt)
2277 { 3703 {
2278 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3704 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2279 if (waittime > to) waittime = to; 3705 if (waittime > to) waittime = to;
2280 } 3706 }
2281#endif 3707#endif
2282 3708
2283 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3709 /* don't let timeouts decrease the waittime below timeout_blocktime */
2284 if (expect_false (waittime < timeout_blocktime)) 3710 if (ecb_expect_false (waittime < timeout_blocktime))
2285 waittime = timeout_blocktime; 3711 waittime = timeout_blocktime;
2286 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
2287 /* extra check because io_blocktime is commonly 0 */ 3718 /* extra check because io_blocktime is commonly 0 */
2288 if (expect_false (io_blocktime)) 3719 if (ecb_expect_false (io_blocktime))
2289 { 3720 {
2290 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3721 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2291 3722
2292 if (sleeptime > waittime - backend_fudge) 3723 if (sleeptime > waittime - backend_mintime)
2293 sleeptime = waittime - backend_fudge; 3724 sleeptime = waittime - backend_mintime;
2294 3725
2295 if (expect_true (sleeptime > 0.)) 3726 if (ecb_expect_true (sleeptime > 0.))
2296 { 3727 {
2297 ev_sleep (sleeptime); 3728 ev_sleep (sleeptime);
2298 waittime -= sleeptime; 3729 waittime -= sleeptime;
2299 } 3730 }
2300 } 3731 }
2301 } 3732 }
2302 3733
2303#if EV_MINIMAL < 2 3734#if EV_FEATURE_API
2304 ++loop_count; 3735 ++loop_count;
2305#endif 3736#endif
2306 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3737 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2307 backend_poll (EV_A_ waittime); 3738 backend_poll (EV_A_ waittime);
2308 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 }
2309 3749
2310 /* update ev_rt_now, do magic */ 3750 /* update ev_rt_now, do magic */
2311 time_update (EV_A_ waittime + sleeptime); 3751 time_update (EV_A_ waittime + sleeptime);
2312 } 3752 }
2313 3753
… …
2320#if EV_IDLE_ENABLE 3760#if EV_IDLE_ENABLE
2321 /* queue idle watchers unless other events are pending */ 3761 /* queue idle watchers unless other events are pending */
2322 idle_reify (EV_A); 3762 idle_reify (EV_A);
2323#endif 3763#endif
2324 3764
3765#if EV_CHECK_ENABLE
2325 /* queue check watchers, to be executed first */ 3766 /* queue check watchers, to be executed first */
2326 if (expect_false (checkcnt)) 3767 if (ecb_expect_false (checkcnt))
2327 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3768 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3769#endif
2328 3770
2329 EV_INVOKE_PENDING; 3771 EV_INVOKE_PENDING;
2330 } 3772 }
2331 while (expect_true ( 3773 while (ecb_expect_true (
2332 activecnt 3774 activecnt
2333 && !loop_done 3775 && !loop_done
2334 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3776 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2335 )); 3777 ));
2336 3778
2337 if (loop_done == EVUNLOOP_ONE) 3779 if (loop_done == EVBREAK_ONE)
2338 loop_done = EVUNLOOP_CANCEL; 3780 loop_done = EVBREAK_CANCEL;
2339 3781
2340#if EV_MINIMAL < 2 3782#if EV_FEATURE_API
2341 --loop_depth; 3783 --loop_depth;
2342#endif 3784#endif
2343}
2344 3785
3786 return activecnt;
3787}
3788
2345void 3789void
2346ev_unloop (EV_P_ int how) 3790ev_break (EV_P_ int how) EV_NOEXCEPT
2347{ 3791{
2348 loop_done = how; 3792 loop_done = how;
2349} 3793}
2350 3794
2351void 3795void
2352ev_ref (EV_P) 3796ev_ref (EV_P) EV_NOEXCEPT
2353{ 3797{
2354 ++activecnt; 3798 ++activecnt;
2355} 3799}
2356 3800
2357void 3801void
2358ev_unref (EV_P) 3802ev_unref (EV_P) EV_NOEXCEPT
2359{ 3803{
2360 --activecnt; 3804 --activecnt;
2361} 3805}
2362 3806
2363void 3807void
2364ev_now_update (EV_P) 3808ev_now_update (EV_P) EV_NOEXCEPT
2365{ 3809{
2366 time_update (EV_A_ 1e100); 3810 time_update (EV_A_ 1e100);
2367} 3811}
2368 3812
2369void 3813void
2370ev_suspend (EV_P) 3814ev_suspend (EV_P) EV_NOEXCEPT
2371{ 3815{
2372 ev_now_update (EV_A); 3816 ev_now_update (EV_A);
2373} 3817}
2374 3818
2375void 3819void
2376ev_resume (EV_P) 3820ev_resume (EV_P) EV_NOEXCEPT
2377{ 3821{
2378 ev_tstamp mn_prev = mn_now; 3822 ev_tstamp mn_prev = mn_now;
2379 3823
2380 ev_now_update (EV_A); 3824 ev_now_update (EV_A);
2381 timers_reschedule (EV_A_ mn_now - mn_prev); 3825 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2398inline_size void 3842inline_size void
2399wlist_del (WL *head, WL elem) 3843wlist_del (WL *head, WL elem)
2400{ 3844{
2401 while (*head) 3845 while (*head)
2402 { 3846 {
2403 if (expect_true (*head == elem)) 3847 if (ecb_expect_true (*head == elem))
2404 { 3848 {
2405 *head = elem->next; 3849 *head = elem->next;
2406 break; 3850 break;
2407 } 3851 }
2408 3852
… …
2420 w->pending = 0; 3864 w->pending = 0;
2421 } 3865 }
2422} 3866}
2423 3867
2424int 3868int
2425ev_clear_pending (EV_P_ void *w) 3869ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
2426{ 3870{
2427 W w_ = (W)w; 3871 W w_ = (W)w;
2428 int pending = w_->pending; 3872 int pending = w_->pending;
2429 3873
2430 if (expect_true (pending)) 3874 if (ecb_expect_true (pending))
2431 { 3875 {
2432 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 3876 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2433 p->w = (W)&pending_w; 3877 p->w = (W)&pending_w;
2434 w_->pending = 0; 3878 w_->pending = 0;
2435 return p->events; 3879 return p->events;
… …
2462 w->active = 0; 3906 w->active = 0;
2463} 3907}
2464 3908
2465/*****************************************************************************/ 3909/*****************************************************************************/
2466 3910
2467void noinline 3911ecb_noinline
3912void
2468ev_io_start (EV_P_ ev_io *w) 3913ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
2469{ 3914{
2470 int fd = w->fd; 3915 int fd = w->fd;
2471 3916
2472 if (expect_false (ev_is_active (w))) 3917 if (ecb_expect_false (ev_is_active (w)))
2473 return; 3918 return;
2474 3919
2475 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 3920 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2476 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))));
2477 3922
3923#if EV_VERIFY >= 2
3924 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
3925#endif
2478 EV_FREQUENT_CHECK; 3926 EV_FREQUENT_CHECK;
2479 3927
2480 ev_start (EV_A_ (W)w, 1); 3928 ev_start (EV_A_ (W)w, 1);
2481 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3929 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
2482 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));
2483 3934
2484 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);
2485 w->events &= ~EV__IOFDSET; 3936 w->events &= ~EV__IOFDSET;
2486 3937
2487 EV_FREQUENT_CHECK; 3938 EV_FREQUENT_CHECK;
2488} 3939}
2489 3940
2490void noinline 3941ecb_noinline
3942void
2491ev_io_stop (EV_P_ ev_io *w) 3943ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
2492{ 3944{
2493 clear_pending (EV_A_ (W)w); 3945 clear_pending (EV_A_ (W)w);
2494 if (expect_false (!ev_is_active (w))) 3946 if (ecb_expect_false (!ev_is_active (w)))
2495 return; 3947 return;
2496 3948
2497 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));
2498 3950
3951#if EV_VERIFY >= 2
3952 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
3953#endif
2499 EV_FREQUENT_CHECK; 3954 EV_FREQUENT_CHECK;
2500 3955
2501 wlist_del (&anfds[w->fd].head, (WL)w); 3956 wlist_del (&anfds[w->fd].head, (WL)w);
2502 ev_stop (EV_A_ (W)w); 3957 ev_stop (EV_A_ (W)w);
2503 3958
2504 fd_change (EV_A_ w->fd, 1); 3959 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2505 3960
2506 EV_FREQUENT_CHECK; 3961 EV_FREQUENT_CHECK;
2507} 3962}
2508 3963
2509void noinline 3964ecb_noinline
3965void
2510ev_timer_start (EV_P_ ev_timer *w) 3966ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
2511{ 3967{
2512 if (expect_false (ev_is_active (w))) 3968 if (ecb_expect_false (ev_is_active (w)))
2513 return; 3969 return;
2514 3970
2515 ev_at (w) += mn_now; 3971 ev_at (w) += mn_now;
2516 3972
2517 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.));
2518 3974
2519 EV_FREQUENT_CHECK; 3975 EV_FREQUENT_CHECK;
2520 3976
2521 ++timercnt; 3977 ++timercnt;
2522 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 3978 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
2523 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 3979 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
2524 ANHE_w (timers [ev_active (w)]) = (WT)w; 3980 ANHE_w (timers [ev_active (w)]) = (WT)w;
2525 ANHE_at_cache (timers [ev_active (w)]); 3981 ANHE_at_cache (timers [ev_active (w)]);
2526 upheap (timers, ev_active (w)); 3982 upheap (timers, ev_active (w));
2527 3983
2528 EV_FREQUENT_CHECK; 3984 EV_FREQUENT_CHECK;
2529 3985
2530 /*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));*/
2531} 3987}
2532 3988
2533void noinline 3989ecb_noinline
3990void
2534ev_timer_stop (EV_P_ ev_timer *w) 3991ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
2535{ 3992{
2536 clear_pending (EV_A_ (W)w); 3993 clear_pending (EV_A_ (W)w);
2537 if (expect_false (!ev_is_active (w))) 3994 if (ecb_expect_false (!ev_is_active (w)))
2538 return; 3995 return;
2539 3996
2540 EV_FREQUENT_CHECK; 3997 EV_FREQUENT_CHECK;
2541 3998
2542 { 3999 {
… …
2544 4001
2545 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));
2546 4003
2547 --timercnt; 4004 --timercnt;
2548 4005
2549 if (expect_true (active < timercnt + HEAP0)) 4006 if (ecb_expect_true (active < timercnt + HEAP0))
2550 { 4007 {
2551 timers [active] = timers [timercnt + HEAP0]; 4008 timers [active] = timers [timercnt + HEAP0];
2552 adjustheap (timers, timercnt, active); 4009 adjustheap (timers, timercnt, active);
2553 } 4010 }
2554 } 4011 }
2555 4012
2556 EV_FREQUENT_CHECK;
2557
2558 ev_at (w) -= mn_now; 4013 ev_at (w) -= mn_now;
2559 4014
2560 ev_stop (EV_A_ (W)w); 4015 ev_stop (EV_A_ (W)w);
2561}
2562 4016
2563void noinline 4017 EV_FREQUENT_CHECK;
4018}
4019
4020ecb_noinline
4021void
2564ev_timer_again (EV_P_ ev_timer *w) 4022ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
2565{ 4023{
2566 EV_FREQUENT_CHECK; 4024 EV_FREQUENT_CHECK;
4025
4026 clear_pending (EV_A_ (W)w);
2567 4027
2568 if (ev_is_active (w)) 4028 if (ev_is_active (w))
2569 { 4029 {
2570 if (w->repeat) 4030 if (w->repeat)
2571 { 4031 {
… …
2584 4044
2585 EV_FREQUENT_CHECK; 4045 EV_FREQUENT_CHECK;
2586} 4046}
2587 4047
2588ev_tstamp 4048ev_tstamp
2589ev_timer_remaining (EV_P_ ev_timer *w) 4049ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
2590{ 4050{
2591 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4051 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2592} 4052}
2593 4053
2594#if EV_PERIODIC_ENABLE 4054#if EV_PERIODIC_ENABLE
2595void noinline 4055ecb_noinline
4056void
2596ev_periodic_start (EV_P_ ev_periodic *w) 4057ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
2597{ 4058{
2598 if (expect_false (ev_is_active (w))) 4059 if (ecb_expect_false (ev_is_active (w)))
2599 return; 4060 return;
2600 4061
2601 if (w->reschedule_cb) 4062 if (w->reschedule_cb)
2602 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4063 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2603 else if (w->interval) 4064 else if (w->interval)
2604 { 4065 {
2605 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.));
2606 /* this formula differs from the one in periodic_reify because we do not always round up */ 4067 periodic_recalc (EV_A_ w);
2607 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2608 } 4068 }
2609 else 4069 else
2610 ev_at (w) = w->offset; 4070 ev_at (w) = w->offset;
2611 4071
2612 EV_FREQUENT_CHECK; 4072 EV_FREQUENT_CHECK;
2613 4073
2614 ++periodiccnt; 4074 ++periodiccnt;
2615 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4075 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2616 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4076 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
2617 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4077 ANHE_w (periodics [ev_active (w)]) = (WT)w;
2618 ANHE_at_cache (periodics [ev_active (w)]); 4078 ANHE_at_cache (periodics [ev_active (w)]);
2619 upheap (periodics, ev_active (w)); 4079 upheap (periodics, ev_active (w));
2620 4080
2621 EV_FREQUENT_CHECK; 4081 EV_FREQUENT_CHECK;
2622 4082
2623 /*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));*/
2624} 4084}
2625 4085
2626void noinline 4086ecb_noinline
4087void
2627ev_periodic_stop (EV_P_ ev_periodic *w) 4088ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
2628{ 4089{
2629 clear_pending (EV_A_ (W)w); 4090 clear_pending (EV_A_ (W)w);
2630 if (expect_false (!ev_is_active (w))) 4091 if (ecb_expect_false (!ev_is_active (w)))
2631 return; 4092 return;
2632 4093
2633 EV_FREQUENT_CHECK; 4094 EV_FREQUENT_CHECK;
2634 4095
2635 { 4096 {
… …
2637 4098
2638 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));
2639 4100
2640 --periodiccnt; 4101 --periodiccnt;
2641 4102
2642 if (expect_true (active < periodiccnt + HEAP0)) 4103 if (ecb_expect_true (active < periodiccnt + HEAP0))
2643 { 4104 {
2644 periodics [active] = periodics [periodiccnt + HEAP0]; 4105 periodics [active] = periodics [periodiccnt + HEAP0];
2645 adjustheap (periodics, periodiccnt, active); 4106 adjustheap (periodics, periodiccnt, active);
2646 } 4107 }
2647 } 4108 }
2648 4109
2649 EV_FREQUENT_CHECK;
2650
2651 ev_stop (EV_A_ (W)w); 4110 ev_stop (EV_A_ (W)w);
2652}
2653 4111
2654void noinline 4112 EV_FREQUENT_CHECK;
4113}
4114
4115ecb_noinline
4116void
2655ev_periodic_again (EV_P_ ev_periodic *w) 4117ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
2656{ 4118{
2657 /* TODO: use adjustheap and recalculation */ 4119 /* TODO: use adjustheap and recalculation */
2658 ev_periodic_stop (EV_A_ w); 4120 ev_periodic_stop (EV_A_ w);
2659 ev_periodic_start (EV_A_ w); 4121 ev_periodic_start (EV_A_ w);
2660} 4122}
… …
2662 4124
2663#ifndef SA_RESTART 4125#ifndef SA_RESTART
2664# define SA_RESTART 0 4126# define SA_RESTART 0
2665#endif 4127#endif
2666 4128
2667void noinline 4129#if EV_SIGNAL_ENABLE
4130
4131ecb_noinline
4132void
2668ev_signal_start (EV_P_ ev_signal *w) 4133ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
2669{ 4134{
2670 if (expect_false (ev_is_active (w))) 4135 if (ecb_expect_false (ev_is_active (w)))
2671 return; 4136 return;
2672 4137
2673 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4138 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2674 4139
2675#if EV_MULTIPLICITY 4140#if EV_MULTIPLICITY
2676 assert (("libev: a signal must not be attached to two different loops", 4141 assert (("libev: a signal must not be attached to two different loops",
2677 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4142 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2678 4143
2679 signals [w->signum - 1].loop = EV_A; 4144 signals [w->signum - 1].loop = EV_A;
4145 ECB_MEMORY_FENCE_RELEASE;
2680#endif 4146#endif
2681 4147
2682 EV_FREQUENT_CHECK; 4148 EV_FREQUENT_CHECK;
2683 4149
2684#if EV_USE_SIGNALFD 4150#if EV_USE_SIGNALFD
… …
2717 if (!((WL)w)->next) 4183 if (!((WL)w)->next)
2718# if EV_USE_SIGNALFD 4184# if EV_USE_SIGNALFD
2719 if (sigfd < 0) /*TODO*/ 4185 if (sigfd < 0) /*TODO*/
2720# endif 4186# endif
2721 { 4187 {
2722# if _WIN32 4188# ifdef _WIN32
4189 evpipe_init (EV_A);
4190
2723 signal (w->signum, ev_sighandler); 4191 signal (w->signum, ev_sighandler);
2724# else 4192# else
2725 struct sigaction sa; 4193 struct sigaction sa;
2726 4194
2727 evpipe_init (EV_A); 4195 evpipe_init (EV_A);
… …
2729 sa.sa_handler = ev_sighandler; 4197 sa.sa_handler = ev_sighandler;
2730 sigfillset (&sa.sa_mask); 4198 sigfillset (&sa.sa_mask);
2731 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 */
2732 sigaction (w->signum, &sa, 0); 4200 sigaction (w->signum, &sa, 0);
2733 4201
4202 if (origflags & EVFLAG_NOSIGMASK)
4203 {
2734 sigemptyset (&sa.sa_mask); 4204 sigemptyset (&sa.sa_mask);
2735 sigaddset (&sa.sa_mask, w->signum); 4205 sigaddset (&sa.sa_mask, w->signum);
2736 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 4206 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
4207 }
2737#endif 4208#endif
2738 } 4209 }
2739 4210
2740 EV_FREQUENT_CHECK; 4211 EV_FREQUENT_CHECK;
2741} 4212}
2742 4213
2743void noinline 4214ecb_noinline
4215void
2744ev_signal_stop (EV_P_ ev_signal *w) 4216ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
2745{ 4217{
2746 clear_pending (EV_A_ (W)w); 4218 clear_pending (EV_A_ (W)w);
2747 if (expect_false (!ev_is_active (w))) 4219 if (ecb_expect_false (!ev_is_active (w)))
2748 return; 4220 return;
2749 4221
2750 EV_FREQUENT_CHECK; 4222 EV_FREQUENT_CHECK;
2751 4223
2752 wlist_del (&signals [w->signum - 1].head, (WL)w); 4224 wlist_del (&signals [w->signum - 1].head, (WL)w);
… …
2758 signals [w->signum - 1].loop = 0; /* unattach from signal */ 4230 signals [w->signum - 1].loop = 0; /* unattach from signal */
2759#endif 4231#endif
2760#if EV_USE_SIGNALFD 4232#if EV_USE_SIGNALFD
2761 if (sigfd >= 0) 4233 if (sigfd >= 0)
2762 { 4234 {
2763 sigprocmask (SIG_UNBLOCK, &sigfd_set, 0);//D 4235 sigset_t ss;
4236
4237 sigemptyset (&ss);
4238 sigaddset (&ss, w->signum);
2764 sigdelset (&sigfd_set, w->signum); 4239 sigdelset (&sigfd_set, w->signum);
4240
2765 signalfd (sigfd, &sigfd_set, 0); 4241 signalfd (sigfd, &sigfd_set, 0);
2766 sigprocmask (SIG_BLOCK, &sigfd_set, 0);//D 4242 sigprocmask (SIG_UNBLOCK, &ss, 0);
2767 /*TODO: maybe unblock signal? */
2768 } 4243 }
2769 else 4244 else
2770#endif 4245#endif
2771 signal (w->signum, SIG_DFL); 4246 signal (w->signum, SIG_DFL);
2772 } 4247 }
2773 4248
2774 EV_FREQUENT_CHECK; 4249 EV_FREQUENT_CHECK;
2775} 4250}
2776 4251
4252#endif
4253
4254#if EV_CHILD_ENABLE
4255
2777void 4256void
2778ev_child_start (EV_P_ ev_child *w) 4257ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
2779{ 4258{
2780#if EV_MULTIPLICITY 4259#if EV_MULTIPLICITY
2781 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));
2782#endif 4261#endif
2783 if (expect_false (ev_is_active (w))) 4262 if (ecb_expect_false (ev_is_active (w)))
2784 return; 4263 return;
2785 4264
2786 EV_FREQUENT_CHECK; 4265 EV_FREQUENT_CHECK;
2787 4266
2788 ev_start (EV_A_ (W)w, 1); 4267 ev_start (EV_A_ (W)w, 1);
2789 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4268 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2790 4269
2791 EV_FREQUENT_CHECK; 4270 EV_FREQUENT_CHECK;
2792} 4271}
2793 4272
2794void 4273void
2795ev_child_stop (EV_P_ ev_child *w) 4274ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
2796{ 4275{
2797 clear_pending (EV_A_ (W)w); 4276 clear_pending (EV_A_ (W)w);
2798 if (expect_false (!ev_is_active (w))) 4277 if (ecb_expect_false (!ev_is_active (w)))
2799 return; 4278 return;
2800 4279
2801 EV_FREQUENT_CHECK; 4280 EV_FREQUENT_CHECK;
2802 4281
2803 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4282 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2804 ev_stop (EV_A_ (W)w); 4283 ev_stop (EV_A_ (W)w);
2805 4284
2806 EV_FREQUENT_CHECK; 4285 EV_FREQUENT_CHECK;
2807} 4286}
4287
4288#endif
2808 4289
2809#if EV_STAT_ENABLE 4290#if EV_STAT_ENABLE
2810 4291
2811# ifdef _WIN32 4292# ifdef _WIN32
2812# undef lstat 4293# undef lstat
… …
2815 4296
2816#define DEF_STAT_INTERVAL 5.0074891 4297#define DEF_STAT_INTERVAL 5.0074891
2817#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4298#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2818#define MIN_STAT_INTERVAL 0.1074891 4299#define MIN_STAT_INTERVAL 0.1074891
2819 4300
2820static 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);
2821 4302
2822#if EV_USE_INOTIFY 4303#if EV_USE_INOTIFY
2823# define EV_INOTIFY_BUFSIZE 8192
2824 4304
2825static 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
2826infy_add (EV_P_ ev_stat *w) 4310infy_add (EV_P_ ev_stat *w)
2827{ 4311{
2828 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);
2829 4316
2830 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 */
2831 { 4343 }
4344 else
4345 {
4346 /* can't use inotify, continue to stat */
2832 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4347 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2833 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2834 4348
2835 /* monitor some parent directory for speedup hints */ 4349 /* if path is not there, monitor some parent directory for speedup hints */
2836 /* 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, */
2837 /* but an efficiency issue only */ 4351 /* but an efficiency issue only */
2838 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 4352 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2839 { 4353 {
2840 char path [4096]; 4354 char path [4096];
… …
2850 if (!pend || pend == path) 4364 if (!pend || pend == path)
2851 break; 4365 break;
2852 4366
2853 *pend = 0; 4367 *pend = 0;
2854 w->wd = inotify_add_watch (fs_fd, path, mask); 4368 w->wd = inotify_add_watch (fs_fd, path, mask);
2855 } 4369 }
2856 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 4370 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2857 } 4371 }
2858 } 4372 }
2859 4373
2860 if (w->wd >= 0) 4374 if (w->wd >= 0)
2861 {
2862 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);
2863 4376
2864 /* now local changes will be tracked by inotify, but remote changes won't */ 4377 /* now re-arm timer, if required */
2865 /* unless the filesystem it known to be local, we therefore still poll */ 4378 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2866 /* also do poll on <2.6.25, but with normal frequency */
2867 struct statfs sfs;
2868
2869 if (fs_2625 && !statfs (w->path, &sfs))
2870 if (sfs.f_type == 0x1373 /* devfs */
2871 || sfs.f_type == 0xEF53 /* ext2/3 */
2872 || sfs.f_type == 0x3153464a /* jfs */
2873 || sfs.f_type == 0x52654973 /* reiser3 */
2874 || sfs.f_type == 0x01021994 /* tempfs */
2875 || sfs.f_type == 0x58465342 /* xfs */)
2876 return;
2877
2878 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2879 ev_timer_again (EV_A_ &w->timer); 4379 ev_timer_again (EV_A_ &w->timer);
2880 } 4380 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2881} 4381}
2882 4382
2883static void noinline 4383ecb_noinline
4384static void
2884infy_del (EV_P_ ev_stat *w) 4385infy_del (EV_P_ ev_stat *w)
2885{ 4386{
2886 int slot; 4387 int slot;
2887 int wd = w->wd; 4388 int wd = w->wd;
2888 4389
2889 if (wd < 0) 4390 if (wd < 0)
2890 return; 4391 return;
2891 4392
2892 w->wd = -2; 4393 w->wd = -2;
2893 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 4394 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2894 wlist_del (&fs_hash [slot].head, (WL)w); 4395 wlist_del (&fs_hash [slot].head, (WL)w);
2895 4396
2896 /* remove this watcher, if others are watching it, they will rearm */ 4397 /* remove this watcher, if others are watching it, they will rearm */
2897 inotify_rm_watch (fs_fd, wd); 4398 inotify_rm_watch (fs_fd, wd);
2898} 4399}
2899 4400
2900static void noinline 4401ecb_noinline
4402static void
2901infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4403infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2902{ 4404{
2903 if (slot < 0) 4405 if (slot < 0)
2904 /* overflow, need to check for all hash slots */ 4406 /* overflow, need to check for all hash slots */
2905 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4407 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2906 infy_wd (EV_A_ slot, wd, ev); 4408 infy_wd (EV_A_ slot, wd, ev);
2907 else 4409 else
2908 { 4410 {
2909 WL w_; 4411 WL w_;
2910 4412
2911 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 4413 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2912 { 4414 {
2913 ev_stat *w = (ev_stat *)w_; 4415 ev_stat *w = (ev_stat *)w_;
2914 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 */
2915 4417
2916 if (w->wd == wd || wd == -1) 4418 if (w->wd == wd || wd == -1)
2917 { 4419 {
2918 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 4420 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2919 { 4421 {
2920 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);
2921 w->wd = -1; 4423 w->wd = -1;
2922 infy_add (EV_A_ w); /* re-add, no matter what */ 4424 infy_add (EV_A_ w); /* re-add, no matter what */
2923 } 4425 }
2924 4426
2925 stat_timer_cb (EV_A_ &w->timer, 0); 4427 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2930 4432
2931static void 4433static void
2932infy_cb (EV_P_ ev_io *w, int revents) 4434infy_cb (EV_P_ ev_io *w, int revents)
2933{ 4435{
2934 char buf [EV_INOTIFY_BUFSIZE]; 4436 char buf [EV_INOTIFY_BUFSIZE];
2935 struct inotify_event *ev = (struct inotify_event *)buf;
2936 int ofs; 4437 int ofs;
2937 int len = read (fs_fd, buf, sizeof (buf)); 4438 int len = read (fs_fd, buf, sizeof (buf));
2938 4439
2939 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);
2940 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 }
2941} 4446}
2942 4447
2943inline_size void 4448inline_size ecb_cold
4449void
2944check_2625 (EV_P) 4450ev_check_2625 (EV_P)
2945{ 4451{
2946 /* kernels < 2.6.25 are borked 4452 /* kernels < 2.6.25 are borked
2947 * 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
2948 */ 4454 */
2949 struct utsname buf; 4455 if (ev_linux_version () < 0x020619)
2950 int major, minor, micro;
2951
2952 if (uname (&buf))
2953 return; 4456 return;
2954 4457
2955 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2956 return;
2957
2958 if (major < 2
2959 || (major == 2 && minor < 6)
2960 || (major == 2 && minor == 6 && micro < 25))
2961 return;
2962
2963 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 ();
2964} 4470}
2965 4471
2966inline_size void 4472inline_size void
2967infy_init (EV_P) 4473infy_init (EV_P)
2968{ 4474{
2969 if (fs_fd != -2) 4475 if (fs_fd != -2)
2970 return; 4476 return;
2971 4477
2972 fs_fd = -1; 4478 fs_fd = -1;
2973 4479
2974 check_2625 (EV_A); 4480 ev_check_2625 (EV_A);
2975 4481
2976 fs_fd = inotify_init (); 4482 fs_fd = infy_newfd ();
2977 4483
2978 if (fs_fd >= 0) 4484 if (fs_fd >= 0)
2979 { 4485 {
4486 fd_intern (fs_fd);
2980 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 4487 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2981 ev_set_priority (&fs_w, EV_MAXPRI); 4488 ev_set_priority (&fs_w, EV_MAXPRI);
2982 ev_io_start (EV_A_ &fs_w); 4489 ev_io_start (EV_A_ &fs_w);
4490 ev_unref (EV_A);
2983 } 4491 }
2984} 4492}
2985 4493
2986inline_size void 4494inline_size void
2987infy_fork (EV_P) 4495infy_fork (EV_P)
… …
2989 int slot; 4497 int slot;
2990 4498
2991 if (fs_fd < 0) 4499 if (fs_fd < 0)
2992 return; 4500 return;
2993 4501
4502 ev_ref (EV_A);
4503 ev_io_stop (EV_A_ &fs_w);
2994 close (fs_fd); 4504 close (fs_fd);
2995 fs_fd = inotify_init (); 4505 fs_fd = infy_newfd ();
2996 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
2997 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4515 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2998 { 4516 {
2999 WL w_ = fs_hash [slot].head; 4517 WL w_ = fs_hash [slot].head;
3000 fs_hash [slot].head = 0; 4518 fs_hash [slot].head = 0;
3001 4519
3002 while (w_) 4520 while (w_)
… …
3007 w->wd = -1; 4525 w->wd = -1;
3008 4526
3009 if (fs_fd >= 0) 4527 if (fs_fd >= 0)
3010 infy_add (EV_A_ w); /* re-add, no matter what */ 4528 infy_add (EV_A_ w); /* re-add, no matter what */
3011 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);
3012 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 }
3013 } 4536 }
3014 } 4537 }
3015} 4538}
3016 4539
3017#endif 4540#endif
… …
3021#else 4544#else
3022# define EV_LSTAT(p,b) lstat (p, b) 4545# define EV_LSTAT(p,b) lstat (p, b)
3023#endif 4546#endif
3024 4547
3025void 4548void
3026ev_stat_stat (EV_P_ ev_stat *w) 4549ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
3027{ 4550{
3028 if (lstat (w->path, &w->attr) < 0) 4551 if (lstat (w->path, &w->attr) < 0)
3029 w->attr.st_nlink = 0; 4552 w->attr.st_nlink = 0;
3030 else if (!w->attr.st_nlink) 4553 else if (!w->attr.st_nlink)
3031 w->attr.st_nlink = 1; 4554 w->attr.st_nlink = 1;
3032} 4555}
3033 4556
3034static void noinline 4557ecb_noinline
4558static void
3035stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4559stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3036{ 4560{
3037 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4561 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3038 4562
3039 /* we copy this here each the time so that */ 4563 ev_statdata prev = w->attr;
3040 /* prev has the old value when the callback gets invoked */
3041 w->prev = w->attr;
3042 ev_stat_stat (EV_A_ w); 4564 ev_stat_stat (EV_A_ w);
3043 4565
3044 /* 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 */
3045 if ( 4567 if (
3046 w->prev.st_dev != w->attr.st_dev 4568 prev.st_dev != w->attr.st_dev
3047 || w->prev.st_ino != w->attr.st_ino 4569 || prev.st_ino != w->attr.st_ino
3048 || w->prev.st_mode != w->attr.st_mode 4570 || prev.st_mode != w->attr.st_mode
3049 || w->prev.st_nlink != w->attr.st_nlink 4571 || prev.st_nlink != w->attr.st_nlink
3050 || w->prev.st_uid != w->attr.st_uid 4572 || prev.st_uid != w->attr.st_uid
3051 || w->prev.st_gid != w->attr.st_gid 4573 || prev.st_gid != w->attr.st_gid
3052 || w->prev.st_rdev != w->attr.st_rdev 4574 || prev.st_rdev != w->attr.st_rdev
3053 || w->prev.st_size != w->attr.st_size 4575 || prev.st_size != w->attr.st_size
3054 || w->prev.st_atime != w->attr.st_atime 4576 || prev.st_atime != w->attr.st_atime
3055 || w->prev.st_mtime != w->attr.st_mtime 4577 || prev.st_mtime != w->attr.st_mtime
3056 || w->prev.st_ctime != w->attr.st_ctime 4578 || prev.st_ctime != w->attr.st_ctime
3057 ) { 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
3058 #if EV_USE_INOTIFY 4585 #if EV_USE_INOTIFY
3059 if (fs_fd >= 0) 4586 if (fs_fd >= 0)
3060 { 4587 {
3061 infy_del (EV_A_ w); 4588 infy_del (EV_A_ w);
3062 infy_add (EV_A_ w); 4589 infy_add (EV_A_ w);
… …
3067 ev_feed_event (EV_A_ w, EV_STAT); 4594 ev_feed_event (EV_A_ w, EV_STAT);
3068 } 4595 }
3069} 4596}
3070 4597
3071void 4598void
3072ev_stat_start (EV_P_ ev_stat *w) 4599ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
3073{ 4600{
3074 if (expect_false (ev_is_active (w))) 4601 if (ecb_expect_false (ev_is_active (w)))
3075 return; 4602 return;
3076 4603
3077 ev_stat_stat (EV_A_ w); 4604 ev_stat_stat (EV_A_ w);
3078 4605
3079 if (w->interval < MIN_STAT_INTERVAL && w->interval) 4606 if (w->interval < MIN_STAT_INTERVAL && w->interval)
… …
3087 4614
3088 if (fs_fd >= 0) 4615 if (fs_fd >= 0)
3089 infy_add (EV_A_ w); 4616 infy_add (EV_A_ w);
3090 else 4617 else
3091#endif 4618#endif
4619 {
3092 ev_timer_again (EV_A_ &w->timer); 4620 ev_timer_again (EV_A_ &w->timer);
4621 ev_unref (EV_A);
4622 }
3093 4623
3094 ev_start (EV_A_ (W)w, 1); 4624 ev_start (EV_A_ (W)w, 1);
3095 4625
3096 EV_FREQUENT_CHECK; 4626 EV_FREQUENT_CHECK;
3097} 4627}
3098 4628
3099void 4629void
3100ev_stat_stop (EV_P_ ev_stat *w) 4630ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
3101{ 4631{
3102 clear_pending (EV_A_ (W)w); 4632 clear_pending (EV_A_ (W)w);
3103 if (expect_false (!ev_is_active (w))) 4633 if (ecb_expect_false (!ev_is_active (w)))
3104 return; 4634 return;
3105 4635
3106 EV_FREQUENT_CHECK; 4636 EV_FREQUENT_CHECK;
3107 4637
3108#if EV_USE_INOTIFY 4638#if EV_USE_INOTIFY
3109 infy_del (EV_A_ w); 4639 infy_del (EV_A_ w);
3110#endif 4640#endif
4641
4642 if (ev_is_active (&w->timer))
4643 {
4644 ev_ref (EV_A);
3111 ev_timer_stop (EV_A_ &w->timer); 4645 ev_timer_stop (EV_A_ &w->timer);
4646 }
3112 4647
3113 ev_stop (EV_A_ (W)w); 4648 ev_stop (EV_A_ (W)w);
3114 4649
3115 EV_FREQUENT_CHECK; 4650 EV_FREQUENT_CHECK;
3116} 4651}
3117#endif 4652#endif
3118 4653
3119#if EV_IDLE_ENABLE 4654#if EV_IDLE_ENABLE
3120void 4655void
3121ev_idle_start (EV_P_ ev_idle *w) 4656ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
3122{ 4657{
3123 if (expect_false (ev_is_active (w))) 4658 if (ecb_expect_false (ev_is_active (w)))
3124 return; 4659 return;
3125 4660
3126 pri_adjust (EV_A_ (W)w); 4661 pri_adjust (EV_A_ (W)w);
3127 4662
3128 EV_FREQUENT_CHECK; 4663 EV_FREQUENT_CHECK;
… …
3131 int active = ++idlecnt [ABSPRI (w)]; 4666 int active = ++idlecnt [ABSPRI (w)];
3132 4667
3133 ++idleall; 4668 ++idleall;
3134 ev_start (EV_A_ (W)w, active); 4669 ev_start (EV_A_ (W)w, active);
3135 4670
3136 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);
3137 idles [ABSPRI (w)][active - 1] = w; 4672 idles [ABSPRI (w)][active - 1] = w;
3138 } 4673 }
3139 4674
3140 EV_FREQUENT_CHECK; 4675 EV_FREQUENT_CHECK;
3141} 4676}
3142 4677
3143void 4678void
3144ev_idle_stop (EV_P_ ev_idle *w) 4679ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
3145{ 4680{
3146 clear_pending (EV_A_ (W)w); 4681 clear_pending (EV_A_ (W)w);
3147 if (expect_false (!ev_is_active (w))) 4682 if (ecb_expect_false (!ev_is_active (w)))
3148 return; 4683 return;
3149 4684
3150 EV_FREQUENT_CHECK; 4685 EV_FREQUENT_CHECK;
3151 4686
3152 { 4687 {
… …
3161 4696
3162 EV_FREQUENT_CHECK; 4697 EV_FREQUENT_CHECK;
3163} 4698}
3164#endif 4699#endif
3165 4700
4701#if EV_PREPARE_ENABLE
3166void 4702void
3167ev_prepare_start (EV_P_ ev_prepare *w) 4703ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
3168{ 4704{
3169 if (expect_false (ev_is_active (w))) 4705 if (ecb_expect_false (ev_is_active (w)))
3170 return; 4706 return;
3171 4707
3172 EV_FREQUENT_CHECK; 4708 EV_FREQUENT_CHECK;
3173 4709
3174 ev_start (EV_A_ (W)w, ++preparecnt); 4710 ev_start (EV_A_ (W)w, ++preparecnt);
3175 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4711 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
3176 prepares [preparecnt - 1] = w; 4712 prepares [preparecnt - 1] = w;
3177 4713
3178 EV_FREQUENT_CHECK; 4714 EV_FREQUENT_CHECK;
3179} 4715}
3180 4716
3181void 4717void
3182ev_prepare_stop (EV_P_ ev_prepare *w) 4718ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
3183{ 4719{
3184 clear_pending (EV_A_ (W)w); 4720 clear_pending (EV_A_ (W)w);
3185 if (expect_false (!ev_is_active (w))) 4721 if (ecb_expect_false (!ev_is_active (w)))
3186 return; 4722 return;
3187 4723
3188 EV_FREQUENT_CHECK; 4724 EV_FREQUENT_CHECK;
3189 4725
3190 { 4726 {
… …
3196 4732
3197 ev_stop (EV_A_ (W)w); 4733 ev_stop (EV_A_ (W)w);
3198 4734
3199 EV_FREQUENT_CHECK; 4735 EV_FREQUENT_CHECK;
3200} 4736}
4737#endif
3201 4738
4739#if EV_CHECK_ENABLE
3202void 4740void
3203ev_check_start (EV_P_ ev_check *w) 4741ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
3204{ 4742{
3205 if (expect_false (ev_is_active (w))) 4743 if (ecb_expect_false (ev_is_active (w)))
3206 return; 4744 return;
3207 4745
3208 EV_FREQUENT_CHECK; 4746 EV_FREQUENT_CHECK;
3209 4747
3210 ev_start (EV_A_ (W)w, ++checkcnt); 4748 ev_start (EV_A_ (W)w, ++checkcnt);
3211 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 4749 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
3212 checks [checkcnt - 1] = w; 4750 checks [checkcnt - 1] = w;
3213 4751
3214 EV_FREQUENT_CHECK; 4752 EV_FREQUENT_CHECK;
3215} 4753}
3216 4754
3217void 4755void
3218ev_check_stop (EV_P_ ev_check *w) 4756ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
3219{ 4757{
3220 clear_pending (EV_A_ (W)w); 4758 clear_pending (EV_A_ (W)w);
3221 if (expect_false (!ev_is_active (w))) 4759 if (ecb_expect_false (!ev_is_active (w)))
3222 return; 4760 return;
3223 4761
3224 EV_FREQUENT_CHECK; 4762 EV_FREQUENT_CHECK;
3225 4763
3226 { 4764 {
… …
3232 4770
3233 ev_stop (EV_A_ (W)w); 4771 ev_stop (EV_A_ (W)w);
3234 4772
3235 EV_FREQUENT_CHECK; 4773 EV_FREQUENT_CHECK;
3236} 4774}
4775#endif
3237 4776
3238#if EV_EMBED_ENABLE 4777#if EV_EMBED_ENABLE
3239void noinline 4778ecb_noinline
4779void
3240ev_embed_sweep (EV_P_ ev_embed *w) 4780ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
3241{ 4781{
3242 ev_loop (w->other, EVLOOP_NONBLOCK); 4782 ev_run (w->other, EVRUN_NOWAIT);
3243} 4783}
3244 4784
3245static void 4785static void
3246embed_io_cb (EV_P_ ev_io *io, int revents) 4786embed_io_cb (EV_P_ ev_io *io, int revents)
3247{ 4787{
3248 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4788 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3249 4789
3250 if (ev_cb (w)) 4790 if (ev_cb (w))
3251 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4791 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3252 else 4792 else
3253 ev_loop (w->other, EVLOOP_NONBLOCK); 4793 ev_run (w->other, EVRUN_NOWAIT);
3254} 4794}
3255 4795
3256static void 4796static void
3257embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4797embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3258{ 4798{
… …
3262 EV_P = w->other; 4802 EV_P = w->other;
3263 4803
3264 while (fdchangecnt) 4804 while (fdchangecnt)
3265 { 4805 {
3266 fd_reify (EV_A); 4806 fd_reify (EV_A);
3267 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4807 ev_run (EV_A_ EVRUN_NOWAIT);
3268 } 4808 }
3269 } 4809 }
3270} 4810}
3271 4811
3272static void 4812static void
… …
3278 4818
3279 { 4819 {
3280 EV_P = w->other; 4820 EV_P = w->other;
3281 4821
3282 ev_loop_fork (EV_A); 4822 ev_loop_fork (EV_A);
3283 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4823 ev_run (EV_A_ EVRUN_NOWAIT);
3284 } 4824 }
3285 4825
3286 ev_embed_start (EV_A_ w); 4826 ev_embed_start (EV_A_ w);
3287} 4827}
3288 4828
… …
3293 ev_idle_stop (EV_A_ idle); 4833 ev_idle_stop (EV_A_ idle);
3294} 4834}
3295#endif 4835#endif
3296 4836
3297void 4837void
3298ev_embed_start (EV_P_ ev_embed *w) 4838ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
3299{ 4839{
3300 if (expect_false (ev_is_active (w))) 4840 if (ecb_expect_false (ev_is_active (w)))
3301 return; 4841 return;
3302 4842
3303 { 4843 {
3304 EV_P = w->other; 4844 EV_P = w->other;
3305 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 ()));
… …
3324 4864
3325 EV_FREQUENT_CHECK; 4865 EV_FREQUENT_CHECK;
3326} 4866}
3327 4867
3328void 4868void
3329ev_embed_stop (EV_P_ ev_embed *w) 4869ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
3330{ 4870{
3331 clear_pending (EV_A_ (W)w); 4871 clear_pending (EV_A_ (W)w);
3332 if (expect_false (!ev_is_active (w))) 4872 if (ecb_expect_false (!ev_is_active (w)))
3333 return; 4873 return;
3334 4874
3335 EV_FREQUENT_CHECK; 4875 EV_FREQUENT_CHECK;
3336 4876
3337 ev_io_stop (EV_A_ &w->io); 4877 ev_io_stop (EV_A_ &w->io);
3338 ev_prepare_stop (EV_A_ &w->prepare); 4878 ev_prepare_stop (EV_A_ &w->prepare);
3339 ev_fork_stop (EV_A_ &w->fork); 4879 ev_fork_stop (EV_A_ &w->fork);
3340 4880
4881 ev_stop (EV_A_ (W)w);
4882
3341 EV_FREQUENT_CHECK; 4883 EV_FREQUENT_CHECK;
3342} 4884}
3343#endif 4885#endif
3344 4886
3345#if EV_FORK_ENABLE 4887#if EV_FORK_ENABLE
3346void 4888void
3347ev_fork_start (EV_P_ ev_fork *w) 4889ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
3348{ 4890{
3349 if (expect_false (ev_is_active (w))) 4891 if (ecb_expect_false (ev_is_active (w)))
3350 return; 4892 return;
3351 4893
3352 EV_FREQUENT_CHECK; 4894 EV_FREQUENT_CHECK;
3353 4895
3354 ev_start (EV_A_ (W)w, ++forkcnt); 4896 ev_start (EV_A_ (W)w, ++forkcnt);
3355 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 4897 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
3356 forks [forkcnt - 1] = w; 4898 forks [forkcnt - 1] = w;
3357 4899
3358 EV_FREQUENT_CHECK; 4900 EV_FREQUENT_CHECK;
3359} 4901}
3360 4902
3361void 4903void
3362ev_fork_stop (EV_P_ ev_fork *w) 4904ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
3363{ 4905{
3364 clear_pending (EV_A_ (W)w); 4906 clear_pending (EV_A_ (W)w);
3365 if (expect_false (!ev_is_active (w))) 4907 if (ecb_expect_false (!ev_is_active (w)))
3366 return; 4908 return;
3367 4909
3368 EV_FREQUENT_CHECK; 4910 EV_FREQUENT_CHECK;
3369 4911
3370 { 4912 {
… …
3378 4920
3379 EV_FREQUENT_CHECK; 4921 EV_FREQUENT_CHECK;
3380} 4922}
3381#endif 4923#endif
3382 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
3383#if EV_ASYNC_ENABLE 4966#if EV_ASYNC_ENABLE
3384void 4967void
3385ev_async_start (EV_P_ ev_async *w) 4968ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
3386{ 4969{
3387 if (expect_false (ev_is_active (w))) 4970 if (ecb_expect_false (ev_is_active (w)))
3388 return; 4971 return;
3389 4972
4973 w->sent = 0;
4974
3390 evpipe_init (EV_A); 4975 evpipe_init (EV_A);
3391 4976
3392 EV_FREQUENT_CHECK; 4977 EV_FREQUENT_CHECK;
3393 4978
3394 ev_start (EV_A_ (W)w, ++asynccnt); 4979 ev_start (EV_A_ (W)w, ++asynccnt);
3395 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 4980 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
3396 asyncs [asynccnt - 1] = w; 4981 asyncs [asynccnt - 1] = w;
3397 4982
3398 EV_FREQUENT_CHECK; 4983 EV_FREQUENT_CHECK;
3399} 4984}
3400 4985
3401void 4986void
3402ev_async_stop (EV_P_ ev_async *w) 4987ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
3403{ 4988{
3404 clear_pending (EV_A_ (W)w); 4989 clear_pending (EV_A_ (W)w);
3405 if (expect_false (!ev_is_active (w))) 4990 if (ecb_expect_false (!ev_is_active (w)))
3406 return; 4991 return;
3407 4992
3408 EV_FREQUENT_CHECK; 4993 EV_FREQUENT_CHECK;
3409 4994
3410 { 4995 {
… …
3418 5003
3419 EV_FREQUENT_CHECK; 5004 EV_FREQUENT_CHECK;
3420} 5005}
3421 5006
3422void 5007void
3423ev_async_send (EV_P_ ev_async *w) 5008ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
3424{ 5009{
3425 w->sent = 1; 5010 w->sent = 1;
3426 evpipe_write (EV_A_ &async_pending); 5011 evpipe_write (EV_A_ &async_pending);
3427} 5012}
3428#endif 5013#endif
… …
3465 5050
3466 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));
3467} 5052}
3468 5053
3469void 5054void
3470ev_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
3471{ 5056{
3472 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));
3473
3474 if (expect_false (!once))
3475 {
3476 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
3477 return;
3478 }
3479 5058
3480 once->cb = cb; 5059 once->cb = cb;
3481 once->arg = arg; 5060 once->arg = arg;
3482 5061
3483 ev_init (&once->io, once_cb_io); 5062 ev_init (&once->io, once_cb_io);
… …
3496} 5075}
3497 5076
3498/*****************************************************************************/ 5077/*****************************************************************************/
3499 5078
3500#if EV_WALK_ENABLE 5079#if EV_WALK_ENABLE
5080ecb_cold
3501void 5081void
3502ev_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
3503{ 5083{
3504 int i, j; 5084 int i, j;
3505 ev_watcher_list *wl, *wn; 5085 ev_watcher_list *wl, *wn;
3506 5086
3507 if (types & (EV_IO | EV_EMBED)) 5087 if (types & (EV_IO | EV_EMBED))
… …
3550 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 5130 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3551#endif 5131#endif
3552 5132
3553#if EV_IDLE_ENABLE 5133#if EV_IDLE_ENABLE
3554 if (types & EV_IDLE) 5134 if (types & EV_IDLE)
3555 for (j = NUMPRI; i--; ) 5135 for (j = NUMPRI; j--; )
3556 for (i = idlecnt [j]; i--; ) 5136 for (i = idlecnt [j]; i--; )
3557 cb (EV_A_ EV_IDLE, idles [j][i]); 5137 cb (EV_A_ EV_IDLE, idles [j][i]);
3558#endif 5138#endif
3559 5139
3560#if EV_FORK_ENABLE 5140#if EV_FORK_ENABLE
… …
3568 if (types & EV_ASYNC) 5148 if (types & EV_ASYNC)
3569 for (i = asynccnt; i--; ) 5149 for (i = asynccnt; i--; )
3570 cb (EV_A_ EV_ASYNC, asyncs [i]); 5150 cb (EV_A_ EV_ASYNC, asyncs [i]);
3571#endif 5151#endif
3572 5152
5153#if EV_PREPARE_ENABLE
3573 if (types & EV_PREPARE) 5154 if (types & EV_PREPARE)
3574 for (i = preparecnt; i--; ) 5155 for (i = preparecnt; i--; )
3575#if EV_EMBED_ENABLE 5156# if EV_EMBED_ENABLE
3576 if (ev_cb (prepares [i]) != embed_prepare_cb) 5157 if (ev_cb (prepares [i]) != embed_prepare_cb)
3577#endif 5158# endif
3578 cb (EV_A_ EV_PREPARE, prepares [i]); 5159 cb (EV_A_ EV_PREPARE, prepares [i]);
5160#endif
3579 5161
5162#if EV_CHECK_ENABLE
3580 if (types & EV_CHECK) 5163 if (types & EV_CHECK)
3581 for (i = checkcnt; i--; ) 5164 for (i = checkcnt; i--; )
3582 cb (EV_A_ EV_CHECK, checks [i]); 5165 cb (EV_A_ EV_CHECK, checks [i]);
5166#endif
3583 5167
5168#if EV_SIGNAL_ENABLE
3584 if (types & EV_SIGNAL) 5169 if (types & EV_SIGNAL)
3585 for (i = 0; i < EV_NSIG - 1; ++i) 5170 for (i = 0; i < EV_NSIG - 1; ++i)
3586 for (wl = signals [i].head; wl; ) 5171 for (wl = signals [i].head; wl; )
3587 { 5172 {
3588 wn = wl->next; 5173 wn = wl->next;
3589 cb (EV_A_ EV_SIGNAL, wl); 5174 cb (EV_A_ EV_SIGNAL, wl);
3590 wl = wn; 5175 wl = wn;
3591 } 5176 }
5177#endif
3592 5178
5179#if EV_CHILD_ENABLE
3593 if (types & EV_CHILD) 5180 if (types & EV_CHILD)
3594 for (i = EV_PID_HASHSIZE; i--; ) 5181 for (i = (EV_PID_HASHSIZE); i--; )
3595 for (wl = childs [i]; wl; ) 5182 for (wl = childs [i]; wl; )
3596 { 5183 {
3597 wn = wl->next; 5184 wn = wl->next;
3598 cb (EV_A_ EV_CHILD, wl); 5185 cb (EV_A_ EV_CHILD, wl);
3599 wl = wn; 5186 wl = wn;
3600 } 5187 }
5188#endif
3601/* EV_STAT 0x00001000 /* stat data changed */ 5189/* EV_STAT 0x00001000 /* stat data changed */
3602/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 5190/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3603} 5191}
3604#endif 5192#endif
3605 5193
3606#if EV_MULTIPLICITY 5194#if EV_MULTIPLICITY
3607 #include "ev_wrap.h" 5195 #include "ev_wrap.h"
3608#endif 5196#endif
3609 5197
3610#ifdef __cplusplus
3611}
3612#endif
3613

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