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Comparing libev/ev.c (file contents):
Revision 1.316 by root, Fri Sep 18 21:02:12 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__ >= 7)) 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
379
380#if EV_SELECT_IS_WINSOCKET
381# include <winsock.h>
382#endif 457#endif
383 458
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>
… …
392# define EFD_CLOEXEC O_CLOEXEC 467# define EFD_CLOEXEC O_CLOEXEC
393# else 468# else
394# define EFD_CLOEXEC 02000000 469# define EFD_CLOEXEC 02000000
395# endif 470# endif
396# endif 471# endif
397# ifdef __cplusplus
398extern "C" {
399# endif
400int eventfd (unsigned int initval, int flags); 472EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
401# ifdef __cplusplus
402}
403# endif
404#endif 473#endif
405 474
406#if EV_USE_SIGNALFD 475#if EV_USE_SIGNALFD
407/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 476/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
408# include <stdint.h> 477# include <stdint.h>
… …
414# define SFD_CLOEXEC O_CLOEXEC 483# define SFD_CLOEXEC O_CLOEXEC
415# else 484# else
416# define SFD_CLOEXEC 02000000 485# define SFD_CLOEXEC 02000000
417# endif 486# endif
418# endif 487# endif
419# ifdef __cplusplus
420extern "C" {
421# endif
422int signalfd (int fd, const sigset_t *mask, int flags); 488EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
423 489
424struct signalfd_siginfo 490struct signalfd_siginfo
425{ 491{
426 uint32_t ssi_signo; 492 uint32_t ssi_signo;
427 char pad[128 - sizeof (uint32_t)]; 493 char pad[128 - sizeof (uint32_t)];
428}; 494};
429# ifdef __cplusplus
430}
431# endif 495#endif
432#endif
433
434 496
435/**/ 497/**/
436 498
437#if EV_VERIFY >= 3 499#if EV_VERIFY >= 3
438# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 500# define EV_FREQUENT_CHECK ev_verify (EV_A)
439#else 501#else
440# define EV_FREQUENT_CHECK do { } while (0) 502# define EV_FREQUENT_CHECK do { } while (0)
441#endif 503#endif
442 504
443/* 505/*
444 * This is used to avoid floating point rounding problems. 506 * This is used to work around floating point rounding problems.
445 * It is added to ev_rt_now when scheduling periodics
446 * to ensure progress, time-wise, even when rounding
447 * errors are against us.
448 * This value is good at least till the year 4000. 507 * This value is good at least till the year 4000.
449 * Better solutions welcome.
450 */ 508 */
451#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 */
452 511
453#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) */
454#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) */
455 514
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;
456#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)
457# define expect(expr,value) __builtin_expect ((expr),(value)) 872 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
458# define noinline __attribute__ ((noinline))
459#else 873#else
460# define expect(expr,value) (expr) 874 #define ecb_expect(expr,value) (expr)
461# define noinline
462# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
463# define inline
464# endif 875#endif
465#endif
466 876
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. */
467#define expect_false(expr) expect ((expr) != 0, 0) 941#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
468#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
469#define inline_size static inline 1555#define inline_size ecb_inline
470 1556
471#if EV_MINIMAL 1557#if EV_FEATURE_CODE
472# define inline_speed static noinline
473#else
474# define inline_speed static inline 1558# define inline_speed ecb_inline
1559#else
1560# define inline_speed ecb_noinline static
475#endif 1561#endif
476 1562
477#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1563#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
478 1564
479#if EV_MINPRI == EV_MAXPRI 1565#if EV_MINPRI == EV_MAXPRI
480# define ABSPRI(w) (((W)w), 0) 1566# define ABSPRI(w) (((W)w), 0)
481#else 1567#else
482# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1568# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
483#endif 1569#endif
484 1570
485#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1571#define EMPTY /* required for microsofts broken pseudo-c compiler */
486#define EMPTY2(a,b) /* used to suppress some warnings */
487 1572
488typedef ev_watcher *W; 1573typedef ev_watcher *W;
489typedef ev_watcher_list *WL; 1574typedef ev_watcher_list *WL;
490typedef ev_watcher_time *WT; 1575typedef ev_watcher_time *WT;
491 1576
492#define ev_active(w) ((W)(w))->active 1577#define ev_active(w) ((W)(w))->active
493#define ev_at(w) ((WT)(w))->at 1578#define ev_at(w) ((WT)(w))->at
494 1579
495#if EV_USE_REALTIME 1580#if EV_USE_REALTIME
496/* 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 */
497/* giving it a reasonably high chance of working on typical architetcures */ 1582/* giving it a reasonably high chance of working on typical architectures */
498static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 1583static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
499#endif 1584#endif
500 1585
501#if EV_USE_MONOTONIC 1586#if EV_USE_MONOTONIC
502static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 1587static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
… …
504 1589
505#ifndef EV_FD_TO_WIN32_HANDLE 1590#ifndef EV_FD_TO_WIN32_HANDLE
506# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd) 1591# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
507#endif 1592#endif
508#ifndef EV_WIN32_HANDLE_TO_FD 1593#ifndef EV_WIN32_HANDLE_TO_FD
509# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (fd, 0) 1594# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
510#endif 1595#endif
511#ifndef EV_WIN32_CLOSE_FD 1596#ifndef EV_WIN32_CLOSE_FD
512# define EV_WIN32_CLOSE_FD(fd) close (fd) 1597# define EV_WIN32_CLOSE_FD(fd) close (fd)
513#endif 1598#endif
514 1599
… …
516# include "ev_win32.c" 1601# include "ev_win32.c"
517#endif 1602#endif
518 1603
519/*****************************************************************************/ 1604/*****************************************************************************/
520 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
521static void (*syserr_cb)(const char *msg); 1711static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
522 1712
1713ecb_cold
523void 1714void
524ev_set_syserr_cb (void (*cb)(const char *msg)) 1715ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
525{ 1716{
526 syserr_cb = cb; 1717 syserr_cb = cb;
527} 1718}
528 1719
529static void noinline 1720ecb_noinline ecb_cold
1721static void
530ev_syserr (const char *msg) 1722ev_syserr (const char *msg)
531{ 1723{
532 if (!msg) 1724 if (!msg)
533 msg = "(libev) system error"; 1725 msg = "(libev) system error";
534 1726
535 if (syserr_cb) 1727 if (syserr_cb)
536 syserr_cb (msg); 1728 syserr_cb (msg);
537 else 1729 else
538 { 1730 {
1731#if EV_AVOID_STDIO
1732 ev_printerr (msg);
1733 ev_printerr (": ");
1734 ev_printerr (strerror (errno));
1735 ev_printerr ("\n");
1736#else
539 perror (msg); 1737 perror (msg);
1738#endif
540 abort (); 1739 abort ();
541 } 1740 }
542} 1741}
543 1742
544static void * 1743static void *
545ev_realloc_emul (void *ptr, long size) 1744ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
546{ 1745{
547 /* some systems, notably openbsd and darwin, fail to properly 1746 /* some systems, notably openbsd and darwin, fail to properly
548 * 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
549 * 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.
550 */ 1751 */
551 1752
552 if (size) 1753 if (size)
553 return realloc (ptr, size); 1754 return realloc (ptr, size);
554 1755
555 free (ptr); 1756 free (ptr);
556 return 0; 1757 return 0;
557} 1758}
558 1759
559static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1760static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
560 1761
1762ecb_cold
561void 1763void
562ev_set_allocator (void *(*cb)(void *ptr, long size)) 1764ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
563{ 1765{
564 alloc = cb; 1766 alloc = cb;
565} 1767}
566 1768
567inline_speed void * 1769inline_speed void *
… …
569{ 1771{
570 ptr = alloc (ptr, size); 1772 ptr = alloc (ptr, size);
571 1773
572 if (!ptr && size) 1774 if (!ptr && size)
573 { 1775 {
1776#if EV_AVOID_STDIO
1777 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1778#else
574 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1779 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1780#endif
575 abort (); 1781 abort ();
576 } 1782 }
577 1783
578 return ptr; 1784 return ptr;
579} 1785}
… …
590typedef struct 1796typedef struct
591{ 1797{
592 WL head; 1798 WL head;
593 unsigned char events; /* the events watched for */ 1799 unsigned char events; /* the events watched for */
594 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) */
595 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 */
596 unsigned char unused; 1802 unsigned char unused;
597#if EV_USE_EPOLL 1803#if EV_USE_EPOLL
598 unsigned int egen; /* generation counter to counter epoll bugs */ 1804 unsigned int egen; /* generation counter to counter epoll bugs */
599#endif 1805#endif
600#if EV_SELECT_IS_WINSOCKET 1806#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
601 SOCKET handle; 1807 SOCKET handle;
1808#endif
1809#if EV_USE_IOCP
1810 OVERLAPPED or, ow;
602#endif 1811#endif
603} ANFD; 1812} ANFD;
604 1813
605/* stores the pending event set for a given watcher */ 1814/* stores the pending event set for a given watcher */
606typedef struct 1815typedef struct
… …
648 #undef VAR 1857 #undef VAR
649 }; 1858 };
650 #include "ev_wrap.h" 1859 #include "ev_wrap.h"
651 1860
652 static struct ev_loop default_loop_struct; 1861 static struct ev_loop default_loop_struct;
653 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 */
654 1863
655#else 1864#else
656 1865
657 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 */
658 #define VAR(name,decl) static decl; 1867 #define VAR(name,decl) static decl;
659 #include "ev_vars.h" 1868 #include "ev_vars.h"
660 #undef VAR 1869 #undef VAR
661 1870
662 static int ev_default_loop_ptr; 1871 static int ev_default_loop_ptr;
663 1872
664#endif 1873#endif
665 1874
666#if EV_MINIMAL < 2 1875#if EV_FEATURE_API
667# 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)
668# 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)
669# define EV_INVOKE_PENDING invoke_cb (EV_A) 1878# define EV_INVOKE_PENDING invoke_cb (EV_A)
670#else 1879#else
671# define EV_RELEASE_CB (void)0 1880# define EV_RELEASE_CB (void)0
672# define EV_ACQUIRE_CB (void)0 1881# define EV_ACQUIRE_CB (void)0
673# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1882# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
674#endif 1883#endif
675 1884
676#define EVUNLOOP_RECURSE 0x80 1885#define EVBREAK_RECURSE 0x80
677 1886
678/*****************************************************************************/ 1887/*****************************************************************************/
679 1888
680#ifndef EV_HAVE_EV_TIME 1889#ifndef EV_HAVE_EV_TIME
681ev_tstamp 1890ev_tstamp
682ev_time (void) 1891ev_time (void) EV_NOEXCEPT
683{ 1892{
684#if EV_USE_REALTIME 1893#if EV_USE_REALTIME
685 if (expect_true (have_realtime)) 1894 if (ecb_expect_true (have_realtime))
686 { 1895 {
687 struct timespec ts; 1896 struct timespec ts;
688 clock_gettime (CLOCK_REALTIME, &ts); 1897 clock_gettime (CLOCK_REALTIME, &ts);
689 return ts.tv_sec + ts.tv_nsec * 1e-9; 1898 return ts.tv_sec + ts.tv_nsec * 1e-9;
690 } 1899 }
… …
698 1907
699inline_size ev_tstamp 1908inline_size ev_tstamp
700get_clock (void) 1909get_clock (void)
701{ 1910{
702#if EV_USE_MONOTONIC 1911#if EV_USE_MONOTONIC
703 if (expect_true (have_monotonic)) 1912 if (ecb_expect_true (have_monotonic))
704 { 1913 {
705 struct timespec ts; 1914 struct timespec ts;
706 clock_gettime (CLOCK_MONOTONIC, &ts); 1915 clock_gettime (CLOCK_MONOTONIC, &ts);
707 return ts.tv_sec + ts.tv_nsec * 1e-9; 1916 return ts.tv_sec + ts.tv_nsec * 1e-9;
708 } 1917 }
… …
711 return ev_time (); 1920 return ev_time ();
712} 1921}
713 1922
714#if EV_MULTIPLICITY 1923#if EV_MULTIPLICITY
715ev_tstamp 1924ev_tstamp
716ev_now (EV_P) 1925ev_now (EV_P) EV_NOEXCEPT
717{ 1926{
718 return ev_rt_now; 1927 return ev_rt_now;
719} 1928}
720#endif 1929#endif
721 1930
722void 1931void
723ev_sleep (ev_tstamp delay) 1932ev_sleep (ev_tstamp delay) EV_NOEXCEPT
724{ 1933{
725 if (delay > 0.) 1934 if (delay > 0.)
726 { 1935 {
727#if EV_USE_NANOSLEEP 1936#if EV_USE_NANOSLEEP
728 struct timespec ts; 1937 struct timespec ts;
729 1938
730 ts.tv_sec = (time_t)delay; 1939 EV_TS_SET (ts, delay);
731 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
732
733 nanosleep (&ts, 0); 1940 nanosleep (&ts, 0);
734#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) */
735 Sleep ((unsigned long)(delay * 1e3)); 1944 Sleep ((unsigned long)(delay * 1e3));
736#else 1945#else
737 struct timeval tv; 1946 struct timeval tv;
738
739 tv.tv_sec = (time_t)delay;
740 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
741 1947
742 /* 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 */
743 /* something not guaranteed by newer posix versions, but guaranteed */ 1949 /* something not guaranteed by newer posix versions, but guaranteed */
744 /* by older ones */ 1950 /* by older ones */
1951 EV_TV_SET (tv, delay);
745 select (0, 0, 0, 0, &tv); 1952 select (0, 0, 0, 0, &tv);
746#endif 1953#endif
747 } 1954 }
748} 1955}
749 1956
750/*****************************************************************************/ 1957/*****************************************************************************/
751 1958
752#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 */
753 1960
754/* find a suitable new size for the given array, */ 1961/* find a suitable new size for the given array, */
755/* hopefully by rounding to a ncie-to-malloc size */ 1962/* hopefully by rounding to a nice-to-malloc size */
756inline_size int 1963inline_size int
757array_nextsize (int elem, int cur, int cnt) 1964array_nextsize (int elem, int cur, int cnt)
758{ 1965{
759 int ncur = cur + 1; 1966 int ncur = cur + 1;
760 1967
761 do 1968 do
762 ncur <<= 1; 1969 ncur <<= 1;
763 while (cnt > ncur); 1970 while (cnt > ncur);
764 1971
765 /* 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 */
766 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1973 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
767 { 1974 {
768 ncur *= elem; 1975 ncur *= elem;
769 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);
770 ncur = ncur - sizeof (void *) * 4; 1977 ncur = ncur - sizeof (void *) * 4;
… …
772 } 1979 }
773 1980
774 return ncur; 1981 return ncur;
775} 1982}
776 1983
777static noinline void * 1984ecb_noinline ecb_cold
1985static void *
778array_realloc (int elem, void *base, int *cur, int cnt) 1986array_realloc (int elem, void *base, int *cur, int cnt)
779{ 1987{
780 *cur = array_nextsize (elem, *cur, cnt); 1988 *cur = array_nextsize (elem, *cur, cnt);
781 return ev_realloc (base, elem * *cur); 1989 return ev_realloc (base, elem * *cur);
782} 1990}
783 1991
1992#define array_needsize_noinit(base,offset,count)
1993
784#define array_init_zero(base,count) \ 1994#define array_needsize_zerofill(base,offset,count) \
785 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1995 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
786 1996
787#define array_needsize(type,base,cur,cnt,init) \ 1997#define array_needsize(type,base,cur,cnt,init) \
788 if (expect_false ((cnt) > (cur))) \ 1998 if (ecb_expect_false ((cnt) > (cur))) \
789 { \ 1999 { \
790 int ocur_ = (cur); \ 2000 ecb_unused int ocur_ = (cur); \
791 (base) = (type *)array_realloc \ 2001 (base) = (type *)array_realloc \
792 (sizeof (type), (base), &(cur), (cnt)); \ 2002 (sizeof (type), (base), &(cur), (cnt)); \
793 init ((base) + (ocur_), (cur) - ocur_); \ 2003 init ((base), ocur_, ((cur) - ocur_)); \
794 } 2004 }
795 2005
796#if 0 2006#if 0
797#define array_slim(type,stem) \ 2007#define array_slim(type,stem) \
798 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2008 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
… …
807 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
808 2018
809/*****************************************************************************/ 2019/*****************************************************************************/
810 2020
811/* dummy callback for pending events */ 2021/* dummy callback for pending events */
812static void noinline 2022ecb_noinline
2023static void
813pendingcb (EV_P_ ev_prepare *w, int revents) 2024pendingcb (EV_P_ ev_prepare *w, int revents)
814{ 2025{
815} 2026}
816 2027
817void noinline 2028ecb_noinline
2029void
818ev_feed_event (EV_P_ void *w, int revents) 2030ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
819{ 2031{
820 W w_ = (W)w; 2032 W w_ = (W)w;
821 int pri = ABSPRI (w_); 2033 int pri = ABSPRI (w_);
822 2034
823 if (expect_false (w_->pending)) 2035 if (ecb_expect_false (w_->pending))
824 pendings [pri][w_->pending - 1].events |= revents; 2036 pendings [pri][w_->pending - 1].events |= revents;
825 else 2037 else
826 { 2038 {
827 w_->pending = ++pendingcnt [pri]; 2039 w_->pending = ++pendingcnt [pri];
828 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2040 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
829 pendings [pri][w_->pending - 1].w = w_; 2041 pendings [pri][w_->pending - 1].w = w_;
830 pendings [pri][w_->pending - 1].events = revents; 2042 pendings [pri][w_->pending - 1].events = revents;
831 } 2043 }
2044
2045 pendingpri = NUMPRI - 1;
832} 2046}
833 2047
834inline_speed void 2048inline_speed void
835feed_reverse (EV_P_ W w) 2049feed_reverse (EV_P_ W w)
836{ 2050{
837 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2051 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
838 rfeeds [rfeedcnt++] = w; 2052 rfeeds [rfeedcnt++] = w;
839} 2053}
840 2054
841inline_size void 2055inline_size void
842feed_reverse_done (EV_P_ int revents) 2056feed_reverse_done (EV_P_ int revents)
… …
856} 2070}
857 2071
858/*****************************************************************************/ 2072/*****************************************************************************/
859 2073
860inline_speed void 2074inline_speed void
861fd_event_nc (EV_P_ int fd, int revents) 2075fd_event_nocheck (EV_P_ int fd, int revents)
862{ 2076{
863 ANFD *anfd = anfds + fd; 2077 ANFD *anfd = anfds + fd;
864 ev_io *w; 2078 ev_io *w;
865 2079
866 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)
… …
877inline_speed void 2091inline_speed void
878fd_event (EV_P_ int fd, int revents) 2092fd_event (EV_P_ int fd, int revents)
879{ 2093{
880 ANFD *anfd = anfds + fd; 2094 ANFD *anfd = anfds + fd;
881 2095
882 if (expect_true (!anfd->reify)) 2096 if (ecb_expect_true (!anfd->reify))
883 fd_event_nc (EV_A_ fd, revents); 2097 fd_event_nocheck (EV_A_ fd, revents);
884} 2098}
885 2099
886void 2100void
887ev_feed_fd_event (EV_P_ int fd, int revents) 2101ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
888{ 2102{
889 if (fd >= 0 && fd < anfdmax) 2103 if (fd >= 0 && fd < anfdmax)
890 fd_event_nc (EV_A_ fd, revents); 2104 fd_event_nocheck (EV_A_ fd, revents);
891} 2105}
892 2106
893/* make sure the external fd watch events are in-sync */ 2107/* make sure the external fd watch events are in-sync */
894/* with the kernel/libev internal state */ 2108/* with the kernel/libev internal state */
895inline_size void 2109inline_size void
896fd_reify (EV_P) 2110fd_reify (EV_P)
897{ 2111{
898 int i; 2112 int i;
899 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
900 for (i = 0; i < fdchangecnt; ++i) 2139 for (i = 0; i < fdchangecnt; ++i)
901 { 2140 {
902 int fd = fdchanges [i]; 2141 int fd = fdchanges [i];
903 ANFD *anfd = anfds + fd; 2142 ANFD *anfd = anfds + fd;
904 ev_io *w; 2143 ev_io *w;
905 2144
906 unsigned char events = 0; 2145 unsigned char o_events = anfd->events;
2146 unsigned char o_reify = anfd->reify;
907 2147
908 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2148 anfd->reify = 0;
909 events |= (unsigned char)w->events;
910 2149
911#if EV_SELECT_IS_WINSOCKET 2150 /*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
912 if (events)
913 { 2151 {
914 unsigned long arg; 2152 anfd->events = 0;
915 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 2153
916 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 2154 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
2155 anfd->events |= (unsigned char)w->events;
2156
2157 if (o_events != anfd->events)
2158 o_reify = EV__IOFDSET; /* actually |= */
917 } 2159 }
918#endif
919 2160
920 { 2161 if (o_reify & EV__IOFDSET)
921 unsigned char o_events = anfd->events;
922 unsigned char o_reify = anfd->reify;
923
924 anfd->reify = 0;
925 anfd->events = events;
926
927 if (o_events != events || o_reify & EV__IOFDSET)
928 backend_modify (EV_A_ fd, o_events, events); 2162 backend_modify (EV_A_ fd, o_events, anfd->events);
929 }
930 } 2163 }
931 2164
932 fdchangecnt = 0; 2165 fdchangecnt = 0;
933} 2166}
934 2167
935/* something about the given fd changed */ 2168/* something about the given fd changed */
936inline_size void 2169inline_size
2170void
937fd_change (EV_P_ int fd, int flags) 2171fd_change (EV_P_ int fd, int flags)
938{ 2172{
939 unsigned char reify = anfds [fd].reify; 2173 unsigned char reify = anfds [fd].reify;
940 anfds [fd].reify |= flags; 2174 anfds [fd].reify |= flags;
941 2175
942 if (expect_true (!reify)) 2176 if (ecb_expect_true (!reify))
943 { 2177 {
944 ++fdchangecnt; 2178 ++fdchangecnt;
945 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2179 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
946 fdchanges [fdchangecnt - 1] = fd; 2180 fdchanges [fdchangecnt - 1] = fd;
947 } 2181 }
948} 2182}
949 2183
950/* 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 */
951inline_speed void 2185inline_speed ecb_cold void
952fd_kill (EV_P_ int fd) 2186fd_kill (EV_P_ int fd)
953{ 2187{
954 ev_io *w; 2188 ev_io *w;
955 2189
956 while ((w = (ev_io *)anfds [fd].head)) 2190 while ((w = (ev_io *)anfds [fd].head))
… …
958 ev_io_stop (EV_A_ w); 2192 ev_io_stop (EV_A_ w);
959 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);
960 } 2194 }
961} 2195}
962 2196
963/* check whether the given fd is atcually valid, for error recovery */ 2197/* check whether the given fd is actually valid, for error recovery */
964inline_size int 2198inline_size ecb_cold int
965fd_valid (int fd) 2199fd_valid (int fd)
966{ 2200{
967#ifdef _WIN32 2201#ifdef _WIN32
968 return _get_osfhandle (fd) != -1; 2202 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
969#else 2203#else
970 return fcntl (fd, F_GETFD) != -1; 2204 return fcntl (fd, F_GETFD) != -1;
971#endif 2205#endif
972} 2206}
973 2207
974/* called on EBADF to verify fds */ 2208/* called on EBADF to verify fds */
975static void noinline 2209ecb_noinline ecb_cold
2210static void
976fd_ebadf (EV_P) 2211fd_ebadf (EV_P)
977{ 2212{
978 int fd; 2213 int fd;
979 2214
980 for (fd = 0; fd < anfdmax; ++fd) 2215 for (fd = 0; fd < anfdmax; ++fd)
… …
982 if (!fd_valid (fd) && errno == EBADF) 2217 if (!fd_valid (fd) && errno == EBADF)
983 fd_kill (EV_A_ fd); 2218 fd_kill (EV_A_ fd);
984} 2219}
985 2220
986/* 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 */
987static void noinline 2222ecb_noinline ecb_cold
2223static void
988fd_enomem (EV_P) 2224fd_enomem (EV_P)
989{ 2225{
990 int fd; 2226 int fd;
991 2227
992 for (fd = anfdmax; fd--; ) 2228 for (fd = anfdmax; fd--; )
… …
996 break; 2232 break;
997 } 2233 }
998} 2234}
999 2235
1000/* 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 */
1001static void noinline 2237ecb_noinline
2238static void
1002fd_rearm_all (EV_P) 2239fd_rearm_all (EV_P)
1003{ 2240{
1004 int fd; 2241 int fd;
1005 2242
1006 for (fd = 0; fd < anfdmax; ++fd) 2243 for (fd = 0; fd < anfdmax; ++fd)
… …
1010 anfds [fd].emask = 0; 2247 anfds [fd].emask = 0;
1011 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); 2248 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
1012 } 2249 }
1013} 2250}
1014 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
1015/*****************************************************************************/ 2266/*****************************************************************************/
1016 2267
1017/* 2268/*
1018 * 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
1019 * 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
1020 * the branching factor of the d-tree. 2271 * the branching factor of the d-tree.
1021 */ 2272 */
1022 2273
1023/* 2274/*
… …
1045 ev_tstamp minat; 2296 ev_tstamp minat;
1046 ANHE *minpos; 2297 ANHE *minpos;
1047 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; 2298 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
1048 2299
1049 /* find minimum child */ 2300 /* find minimum child */
1050 if (expect_true (pos + DHEAP - 1 < E)) 2301 if (ecb_expect_true (pos + DHEAP - 1 < E))
1051 { 2302 {
1052 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2303 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1053 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));
1054 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));
1055 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));
… …
1171 2422
1172static ANSIG signals [EV_NSIG - 1]; 2423static ANSIG signals [EV_NSIG - 1];
1173 2424
1174/*****************************************************************************/ 2425/*****************************************************************************/
1175 2426
1176/* used to prepare libev internal fd's */ 2427#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1177/* 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
1178inline_speed void 2475inline_speed void
1179fd_intern (int fd) 2476evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1180{ 2477{
1181#ifdef _WIN32 2478 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1182 unsigned long arg = 1;
1183 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1184#else
1185 fcntl (fd, F_SETFD, FD_CLOEXEC);
1186 fcntl (fd, F_SETFL, O_NONBLOCK);
1187#endif
1188}
1189 2479
1190static void noinline 2480 if (ecb_expect_true (*flag))
1191evpipe_init (EV_P) 2481 return;
1192{ 2482
1193 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)
1194 { 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
1195#if EV_USE_EVENTFD 2499#if EV_USE_EVENTFD
1196 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2500 if (evpipe [0] < 0)
1197 if (evfd < 0 && errno == EINVAL)
1198 evfd = eventfd (0, 0);
1199
1200 if (evfd >= 0)
1201 { 2501 {
1202 evpipe [0] = -1; 2502 uint64_t counter = 1;
1203 fd_intern (evfd); /* doing it twice doesn't hurt */ 2503 write (evpipe [1], &counter, sizeof (uint64_t));
1204 ev_io_set (&pipe_w, evfd, EV_READ);
1205 } 2504 }
1206 else 2505 else
1207#endif 2506#endif
1208 { 2507 {
1209 while (pipe (evpipe)) 2508#ifdef _WIN32
1210 ev_syserr ("(libev) error creating signal/async pipe"); 2509 WSABUF buf;
1211 2510 DWORD sent;
1212 fd_intern (evpipe [0]); 2511 buf.buf = (char *)&buf;
1213 fd_intern (evpipe [1]); 2512 buf.len = 1;
1214 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
1215 } 2517 }
1216
1217 ev_io_start (EV_A_ &pipe_w);
1218 ev_unref (EV_A); /* watcher should not keep loop alive */
1219 }
1220}
1221
1222inline_size void
1223evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1224{
1225 if (!*flag)
1226 {
1227 int old_errno = errno; /* save errno because write might clobber it */
1228
1229 *flag = 1;
1230
1231#if EV_USE_EVENTFD
1232 if (evfd >= 0)
1233 {
1234 uint64_t counter = 1;
1235 write (evfd, &counter, sizeof (uint64_t));
1236 }
1237 else
1238#endif
1239 write (evpipe [1], &old_errno, 1);
1240 2518
1241 errno = old_errno; 2519 errno = old_errno;
1242 } 2520 }
1243} 2521}
1244 2522
… …
1247static void 2525static void
1248pipecb (EV_P_ ev_io *iow, int revents) 2526pipecb (EV_P_ ev_io *iow, int revents)
1249{ 2527{
1250 int i; 2528 int i;
1251 2529
2530 if (revents & EV_READ)
2531 {
1252#if EV_USE_EVENTFD 2532#if EV_USE_EVENTFD
1253 if (evfd >= 0) 2533 if (evpipe [0] < 0)
1254 { 2534 {
1255 uint64_t counter; 2535 uint64_t counter;
1256 read (evfd, &counter, sizeof (uint64_t)); 2536 read (evpipe [1], &counter, sizeof (uint64_t));
1257 } 2537 }
1258 else 2538 else
1259#endif 2539#endif
1260 { 2540 {
1261 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
1262 read (evpipe [0], &dummy, 1); 2550 read (evpipe [0], &dummy, sizeof (dummy));
2551#endif
2552 }
1263 } 2553 }
1264 2554
2555 pipe_write_skipped = 0;
2556
2557 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2558
2559#if EV_SIGNAL_ENABLE
1265 if (sig_pending) 2560 if (sig_pending)
1266 { 2561 {
1267 sig_pending = 0; 2562 sig_pending = 0;
1268 2563
2564 ECB_MEMORY_FENCE;
2565
1269 for (i = EV_NSIG - 1; i--; ) 2566 for (i = EV_NSIG - 1; i--; )
1270 if (expect_false (signals [i].pending)) 2567 if (ecb_expect_false (signals [i].pending))
1271 ev_feed_signal_event (EV_A_ i + 1); 2568 ev_feed_signal_event (EV_A_ i + 1);
1272 } 2569 }
2570#endif
1273 2571
1274#if EV_ASYNC_ENABLE 2572#if EV_ASYNC_ENABLE
1275 if (async_pending) 2573 if (async_pending)
1276 { 2574 {
1277 async_pending = 0; 2575 async_pending = 0;
2576
2577 ECB_MEMORY_FENCE;
1278 2578
1279 for (i = asynccnt; i--; ) 2579 for (i = asynccnt; i--; )
1280 if (asyncs [i]->sent) 2580 if (asyncs [i]->sent)
1281 { 2581 {
1282 asyncs [i]->sent = 0; 2582 asyncs [i]->sent = 0;
2583 ECB_MEMORY_FENCE_RELEASE;
1283 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2584 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1284 } 2585 }
1285 } 2586 }
1286#endif 2587#endif
1287} 2588}
1288 2589
1289/*****************************************************************************/ 2590/*****************************************************************************/
1290 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
1291static void 2608static void
1292ev_sighandler (int signum) 2609ev_sighandler (int signum)
1293{ 2610{
1294#if EV_MULTIPLICITY
1295 EV_P = signals [signum - 1].loop;
1296#endif
1297
1298#if _WIN32 2611#ifdef _WIN32
1299 signal (signum, ev_sighandler); 2612 signal (signum, ev_sighandler);
1300#endif 2613#endif
1301 2614
1302 signals [signum - 1].pending = 1; 2615 ev_feed_signal (signum);
1303 evpipe_write (EV_A_ &sig_pending);
1304} 2616}
1305 2617
1306void noinline 2618ecb_noinline
2619void
1307ev_feed_signal_event (EV_P_ int signum) 2620ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
1308{ 2621{
1309 WL w; 2622 WL w;
1310 2623
1311 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2624 if (ecb_expect_false (signum <= 0 || signum >= EV_NSIG))
1312 return; 2625 return;
1313 2626
1314 --signum; 2627 --signum;
1315 2628
1316#if EV_MULTIPLICITY 2629#if EV_MULTIPLICITY
1317 /* 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 */
1318 /* or, likely more useful, feeding a signal nobody is waiting for */ 2631 /* or, likely more useful, feeding a signal nobody is waiting for */
1319 2632
1320 if (expect_false (signals [signum].loop != EV_A)) 2633 if (ecb_expect_false (signals [signum].loop != EV_A))
1321 return; 2634 return;
1322#endif 2635#endif
1323 2636
1324 signals [signum].pending = 0; 2637 signals [signum].pending = 0;
2638 ECB_MEMORY_FENCE_RELEASE;
1325 2639
1326 for (w = signals [signum].head; w; w = w->next) 2640 for (w = signals [signum].head; w; w = w->next)
1327 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2641 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1328} 2642}
1329 2643
… …
1345 break; 2659 break;
1346 } 2660 }
1347} 2661}
1348#endif 2662#endif
1349 2663
2664#endif
2665
1350/*****************************************************************************/ 2666/*****************************************************************************/
1351 2667
2668#if EV_CHILD_ENABLE
1352static WL childs [EV_PID_HASHSIZE]; 2669static WL childs [EV_PID_HASHSIZE];
1353
1354#ifndef _WIN32
1355 2670
1356static ev_signal childev; 2671static ev_signal childev;
1357 2672
1358#ifndef WIFCONTINUED 2673#ifndef WIFCONTINUED
1359# define WIFCONTINUED(status) 0 2674# define WIFCONTINUED(status) 0
… …
1364child_reap (EV_P_ int chain, int pid, int status) 2679child_reap (EV_P_ int chain, int pid, int status)
1365{ 2680{
1366 ev_child *w; 2681 ev_child *w;
1367 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2682 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1368 2683
1369 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)
1370 { 2685 {
1371 if ((w->pid == pid || !w->pid) 2686 if ((w->pid == pid || !w->pid)
1372 && (!traced || (w->flags & 1))) 2687 && (!traced || (w->flags & 1)))
1373 { 2688 {
1374 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 */
… …
1399 /* 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 */
1400 /* 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 */
1401 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2716 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1402 2717
1403 child_reap (EV_A_ pid, pid, status); 2718 child_reap (EV_A_ pid, pid, status);
1404 if (EV_PID_HASHSIZE > 1) 2719 if ((EV_PID_HASHSIZE) > 1)
1405 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 */
1406} 2721}
1407 2722
1408#endif 2723#endif
1409 2724
1410/*****************************************************************************/ 2725/*****************************************************************************/
1411 2726
2727#if EV_USE_IOCP
2728# include "ev_iocp.c"
2729#endif
1412#if EV_USE_PORT 2730#if EV_USE_PORT
1413# include "ev_port.c" 2731# include "ev_port.c"
1414#endif 2732#endif
1415#if EV_USE_KQUEUE 2733#if EV_USE_KQUEUE
1416# include "ev_kqueue.c" 2734# include "ev_kqueue.c"
1417#endif 2735#endif
1418#if EV_USE_EPOLL 2736#if EV_USE_EPOLL
1419# include "ev_epoll.c" 2737# include "ev_epoll.c"
1420#endif 2738#endif
2739#if EV_USE_LINUXAIO
2740# include "ev_linuxaio.c"
2741#endif
1421#if EV_USE_POLL 2742#if EV_USE_POLL
1422# include "ev_poll.c" 2743# include "ev_poll.c"
1423#endif 2744#endif
1424#if EV_USE_SELECT 2745#if EV_USE_SELECT
1425# include "ev_select.c" 2746# include "ev_select.c"
1426#endif 2747#endif
1427 2748
1428int 2749ecb_cold int
1429ev_version_major (void) 2750ev_version_major (void) EV_NOEXCEPT
1430{ 2751{
1431 return EV_VERSION_MAJOR; 2752 return EV_VERSION_MAJOR;
1432} 2753}
1433 2754
1434int 2755ecb_cold int
1435ev_version_minor (void) 2756ev_version_minor (void) EV_NOEXCEPT
1436{ 2757{
1437 return EV_VERSION_MINOR; 2758 return EV_VERSION_MINOR;
1438} 2759}
1439 2760
1440/* 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 */
1441int inline_size 2762inline_size ecb_cold int
1442enable_secure (void) 2763enable_secure (void)
1443{ 2764{
1444#ifdef _WIN32 2765#ifdef _WIN32
1445 return 0; 2766 return 0;
1446#else 2767#else
1447 return getuid () != geteuid () 2768 return getuid () != geteuid ()
1448 || getgid () != getegid (); 2769 || getgid () != getegid ();
1449#endif 2770#endif
1450} 2771}
1451 2772
2773ecb_cold
1452unsigned int 2774unsigned int
1453ev_supported_backends (void) 2775ev_supported_backends (void) EV_NOEXCEPT
1454{ 2776{
1455 unsigned int flags = 0; 2777 unsigned int flags = 0;
1456 2778
1457 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2779 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1458 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2780 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
1459 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 2781 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2782 if (EV_USE_LINUXAIO) flags |= EVBACKEND_LINUXAIO;
1460 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 2783 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
1461 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2784 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
1462 2785
1463 return flags; 2786 return flags;
1464} 2787}
1465 2788
2789ecb_cold
1466unsigned int 2790unsigned int
1467ev_recommended_backends (void) 2791ev_recommended_backends (void) EV_NOEXCEPT
1468{ 2792{
1469 unsigned int flags = ev_supported_backends (); 2793 unsigned int flags = ev_supported_backends ();
1470 2794
1471#ifndef __NetBSD__ 2795#ifndef __NetBSD__
1472 /* kqueue is borked on everything but netbsd apparently */ 2796 /* kqueue is borked on everything but netbsd apparently */
… …
1476#ifdef __APPLE__ 2800#ifdef __APPLE__
1477 /* only select works correctly on that "unix-certified" platform */ 2801 /* only select works correctly on that "unix-certified" platform */
1478 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2802 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1479 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 */
1480#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
1481 2813
1482 return flags; 2814 return flags;
1483} 2815}
1484 2816
2817ecb_cold
1485unsigned int 2818unsigned int
1486ev_embeddable_backends (void) 2819ev_embeddable_backends (void) EV_NOEXCEPT
1487{ 2820{
1488 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2821 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1489 2822
1490 /* 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 */
1491 /* please fix it and tell me how to detect the fix */ 2824 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1492 flags &= ~EVBACKEND_EPOLL; 2825 flags &= ~EVBACKEND_EPOLL;
1493 2826
1494 return flags; 2827 return flags;
1495} 2828}
1496 2829
1497unsigned int 2830unsigned int
1498ev_backend (EV_P) 2831ev_backend (EV_P) EV_NOEXCEPT
1499{ 2832{
1500 return backend; 2833 return backend;
1501} 2834}
1502 2835
1503#if EV_MINIMAL < 2 2836#if EV_FEATURE_API
1504unsigned int 2837unsigned int
1505ev_loop_count (EV_P) 2838ev_iteration (EV_P) EV_NOEXCEPT
1506{ 2839{
1507 return loop_count; 2840 return loop_count;
1508} 2841}
1509 2842
1510unsigned int 2843unsigned int
1511ev_loop_depth (EV_P) 2844ev_depth (EV_P) EV_NOEXCEPT
1512{ 2845{
1513 return loop_depth; 2846 return loop_depth;
1514} 2847}
1515 2848
1516void 2849void
1517ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2850ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1518{ 2851{
1519 io_blocktime = interval; 2852 io_blocktime = interval;
1520} 2853}
1521 2854
1522void 2855void
1523ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2856ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1524{ 2857{
1525 timeout_blocktime = interval; 2858 timeout_blocktime = interval;
1526} 2859}
1527 2860
1528void 2861void
1529ev_set_userdata (EV_P_ void *data) 2862ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
1530{ 2863{
1531 userdata = data; 2864 userdata = data;
1532} 2865}
1533 2866
1534void * 2867void *
1535ev_userdata (EV_P) 2868ev_userdata (EV_P) EV_NOEXCEPT
1536{ 2869{
1537 return userdata; 2870 return userdata;
1538} 2871}
1539 2872
2873void
1540void 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
1541{ 2875{
1542 invoke_cb = invoke_pending_cb; 2876 invoke_cb = invoke_pending_cb;
1543} 2877}
1544 2878
2879void
1545void 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
1546{ 2881{
1547 release_cb = release; 2882 release_cb = release;
1548 acquire_cb = acquire; 2883 acquire_cb = acquire;
1549} 2884}
1550#endif 2885#endif
1551 2886
1552/* initialise a loop structure, must be zero-initialised */ 2887/* initialise a loop structure, must be zero-initialised */
1553static void noinline 2888ecb_noinline ecb_cold
2889static void
1554loop_init (EV_P_ unsigned int flags) 2890loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
1555{ 2891{
1556 if (!backend) 2892 if (!backend)
1557 { 2893 {
2894 origflags = flags;
2895
1558#if EV_USE_REALTIME 2896#if EV_USE_REALTIME
1559 if (!have_realtime) 2897 if (!have_realtime)
1560 { 2898 {
1561 struct timespec ts; 2899 struct timespec ts;
1562 2900
… …
1584 if (!(flags & EVFLAG_NOENV) 2922 if (!(flags & EVFLAG_NOENV)
1585 && !enable_secure () 2923 && !enable_secure ()
1586 && getenv ("LIBEV_FLAGS")) 2924 && getenv ("LIBEV_FLAGS"))
1587 flags = atoi (getenv ("LIBEV_FLAGS")); 2925 flags = atoi (getenv ("LIBEV_FLAGS"));
1588 2926
1589 ev_rt_now = ev_time (); 2927 ev_rt_now = ev_time ();
1590 mn_now = get_clock (); 2928 mn_now = get_clock ();
1591 now_floor = mn_now; 2929 now_floor = mn_now;
1592 rtmn_diff = ev_rt_now - mn_now; 2930 rtmn_diff = ev_rt_now - mn_now;
1593#if EV_MINIMAL < 2 2931#if EV_FEATURE_API
1594 invoke_cb = ev_invoke_pending; 2932 invoke_cb = ev_invoke_pending;
1595#endif 2933#endif
1596 2934
1597 io_blocktime = 0.; 2935 io_blocktime = 0.;
1598 timeout_blocktime = 0.; 2936 timeout_blocktime = 0.;
1599 backend = 0; 2937 backend = 0;
1600 backend_fd = -1; 2938 backend_fd = -1;
1601 sig_pending = 0; 2939 sig_pending = 0;
1602#if EV_ASYNC_ENABLE 2940#if EV_ASYNC_ENABLE
1603 async_pending = 0; 2941 async_pending = 0;
1604#endif 2942#endif
2943 pipe_write_skipped = 0;
2944 pipe_write_wanted = 0;
2945 evpipe [0] = -1;
2946 evpipe [1] = -1;
1605#if EV_USE_INOTIFY 2947#if EV_USE_INOTIFY
1606 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2948 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1607#endif 2949#endif
1608#if EV_USE_SIGNALFD 2950#if EV_USE_SIGNALFD
1609 sigfd = flags & EVFLAG_NOSIGFD ? -1 : -2; 2951 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1610#endif 2952#endif
1611 2953
1612 if (!(flags & 0x0000ffffU)) 2954 if (!(flags & EVBACKEND_MASK))
1613 flags |= ev_recommended_backends (); 2955 flags |= ev_recommended_backends ();
1614 2956
2957#if EV_USE_IOCP
2958 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2959#endif
1615#if EV_USE_PORT 2960#if EV_USE_PORT
1616 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2961 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1617#endif 2962#endif
1618#if EV_USE_KQUEUE 2963#if EV_USE_KQUEUE
1619 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);
1620#endif 2968#endif
1621#if EV_USE_EPOLL 2969#if EV_USE_EPOLL
1622 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 2970 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
1623#endif 2971#endif
1624#if EV_USE_POLL 2972#if EV_USE_POLL
1625 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 2973 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
1626#endif 2974#endif
1627#if EV_USE_SELECT 2975#if EV_USE_SELECT
1628 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2976 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
1629#endif 2977#endif
1630 2978
1631 ev_prepare_init (&pending_w, pendingcb); 2979 ev_prepare_init (&pending_w, pendingcb);
1632 2980
2981#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1633 ev_init (&pipe_w, pipecb); 2982 ev_init (&pipe_w, pipecb);
1634 ev_set_priority (&pipe_w, EV_MAXPRI); 2983 ev_set_priority (&pipe_w, EV_MAXPRI);
2984#endif
1635 } 2985 }
1636} 2986}
1637 2987
1638/* free up a loop structure */ 2988/* free up a loop structure */
1639static void noinline 2989ecb_cold
2990void
1640loop_destroy (EV_P) 2991ev_loop_destroy (EV_P)
1641{ 2992{
1642 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
1643 3017
1644 if (ev_is_active (&pipe_w)) 3018 if (ev_is_active (&pipe_w))
1645 { 3019 {
1646 /*ev_ref (EV_A);*/ 3020 /*ev_ref (EV_A);*/
1647 /*ev_io_stop (EV_A_ &pipe_w);*/ 3021 /*ev_io_stop (EV_A_ &pipe_w);*/
1648 3022
1649#if EV_USE_EVENTFD
1650 if (evfd >= 0)
1651 close (evfd);
1652#endif
1653
1654 if (evpipe [0] >= 0)
1655 {
1656 EV_WIN32_CLOSE_FD (evpipe [0]); 3023 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1657 EV_WIN32_CLOSE_FD (evpipe [1]); 3024 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1658 }
1659 } 3025 }
1660 3026
1661#if EV_USE_SIGNALFD 3027#if EV_USE_SIGNALFD
1662 if (ev_is_active (&sigfd_w)) 3028 if (ev_is_active (&sigfd_w))
1663 {
1664 /*ev_ref (EV_A);*/
1665 /*ev_io_stop (EV_A_ &sigfd_w);*/
1666
1667 close (sigfd); 3029 close (sigfd);
1668 }
1669#endif 3030#endif
1670 3031
1671#if EV_USE_INOTIFY 3032#if EV_USE_INOTIFY
1672 if (fs_fd >= 0) 3033 if (fs_fd >= 0)
1673 close (fs_fd); 3034 close (fs_fd);
1674#endif 3035#endif
1675 3036
1676 if (backend_fd >= 0) 3037 if (backend_fd >= 0)
1677 close (backend_fd); 3038 close (backend_fd);
1678 3039
3040#if EV_USE_IOCP
3041 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
3042#endif
1679#if EV_USE_PORT 3043#if EV_USE_PORT
1680 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3044 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1681#endif 3045#endif
1682#if EV_USE_KQUEUE 3046#if EV_USE_KQUEUE
1683 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);
1684#endif 3051#endif
1685#if EV_USE_EPOLL 3052#if EV_USE_EPOLL
1686 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3053 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
1687#endif 3054#endif
1688#if EV_USE_POLL 3055#if EV_USE_POLL
1689 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3056 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
1690#endif 3057#endif
1691#if EV_USE_SELECT 3058#if EV_USE_SELECT
1692 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3059 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
1693#endif 3060#endif
1694 3061
1695 for (i = NUMPRI; i--; ) 3062 for (i = NUMPRI; i--; )
1696 { 3063 {
1697 array_free (pending, [i]); 3064 array_free (pending, [i]);
… …
1710 array_free (periodic, EMPTY); 3077 array_free (periodic, EMPTY);
1711#endif 3078#endif
1712#if EV_FORK_ENABLE 3079#if EV_FORK_ENABLE
1713 array_free (fork, EMPTY); 3080 array_free (fork, EMPTY);
1714#endif 3081#endif
3082#if EV_CLEANUP_ENABLE
3083 array_free (cleanup, EMPTY);
3084#endif
1715 array_free (prepare, EMPTY); 3085 array_free (prepare, EMPTY);
1716 array_free (check, EMPTY); 3086 array_free (check, EMPTY);
1717#if EV_ASYNC_ENABLE 3087#if EV_ASYNC_ENABLE
1718 array_free (async, EMPTY); 3088 array_free (async, EMPTY);
1719#endif 3089#endif
1720 3090
1721 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
1722} 3101}
1723 3102
1724#if EV_USE_INOTIFY 3103#if EV_USE_INOTIFY
1725inline_size void infy_fork (EV_P); 3104inline_size void infy_fork (EV_P);
1726#endif 3105#endif
1727 3106
1728inline_size void 3107inline_size void
1729loop_fork (EV_P) 3108loop_fork (EV_P)
1730{ 3109{
1731#if EV_USE_PORT 3110#if EV_USE_PORT
1732 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3111 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1733#endif 3112#endif
1734#if EV_USE_KQUEUE 3113#if EV_USE_KQUEUE
1735 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);
1736#endif 3118#endif
1737#if EV_USE_EPOLL 3119#if EV_USE_EPOLL
1738 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3120 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
1739#endif 3121#endif
1740#if EV_USE_INOTIFY 3122#if EV_USE_INOTIFY
1741 infy_fork (EV_A); 3123 infy_fork (EV_A);
1742#endif 3124#endif
1743 3125
3126#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1744 if (ev_is_active (&pipe_w)) 3127 if (ev_is_active (&pipe_w) && postfork != 2)
1745 { 3128 {
1746 /* this "locks" the handlers against writing to the pipe */ 3129 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1747 /* while we modify the fd vars */
1748 sig_pending = 1;
1749#if EV_ASYNC_ENABLE
1750 async_pending = 1;
1751#endif
1752 3130
1753 ev_ref (EV_A); 3131 ev_ref (EV_A);
1754 ev_io_stop (EV_A_ &pipe_w); 3132 ev_io_stop (EV_A_ &pipe_w);
1755 3133
1756#if EV_USE_EVENTFD
1757 if (evfd >= 0)
1758 close (evfd);
1759#endif
1760
1761 if (evpipe [0] >= 0) 3134 if (evpipe [0] >= 0)
1762 {
1763 EV_WIN32_CLOSE_FD (evpipe [0]); 3135 EV_WIN32_CLOSE_FD (evpipe [0]);
1764 EV_WIN32_CLOSE_FD (evpipe [1]);
1765 }
1766 3136
1767 evpipe_init (EV_A); 3137 evpipe_init (EV_A);
1768 /* now iterate over everything, in case we missed something */ 3138 /* iterate over everything, in case we missed something before */
1769 pipecb (EV_A_ &pipe_w, EV_READ); 3139 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1770 } 3140 }
3141#endif
1771 3142
1772 postfork = 0; 3143 postfork = 0;
1773} 3144}
1774 3145
1775#if EV_MULTIPLICITY 3146#if EV_MULTIPLICITY
1776 3147
3148ecb_cold
1777struct ev_loop * 3149struct ev_loop *
1778ev_loop_new (unsigned int flags) 3150ev_loop_new (unsigned int flags) EV_NOEXCEPT
1779{ 3151{
1780 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3152 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1781 3153
1782 memset (EV_A, 0, sizeof (struct ev_loop)); 3154 memset (EV_A, 0, sizeof (struct ev_loop));
1783 loop_init (EV_A_ flags); 3155 loop_init (EV_A_ flags);
1784 3156
1785 if (ev_backend (EV_A)) 3157 if (ev_backend (EV_A))
1786 return EV_A; 3158 return EV_A;
1787 3159
3160 ev_free (EV_A);
1788 return 0; 3161 return 0;
1789} 3162}
1790 3163
1791void
1792ev_loop_destroy (EV_P)
1793{
1794 loop_destroy (EV_A);
1795 ev_free (loop);
1796}
1797
1798void
1799ev_loop_fork (EV_P)
1800{
1801 postfork = 1; /* must be in line with ev_default_fork */
1802}
1803#endif /* multiplicity */ 3164#endif /* multiplicity */
1804 3165
1805#if EV_VERIFY 3166#if EV_VERIFY
1806static void noinline 3167ecb_noinline ecb_cold
3168static void
1807verify_watcher (EV_P_ W w) 3169verify_watcher (EV_P_ W w)
1808{ 3170{
1809 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));
1810 3172
1811 if (w->pending) 3173 if (w->pending)
1812 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));
1813} 3175}
1814 3176
1815static void noinline 3177ecb_noinline ecb_cold
3178static void
1816verify_heap (EV_P_ ANHE *heap, int N) 3179verify_heap (EV_P_ ANHE *heap, int N)
1817{ 3180{
1818 int i; 3181 int i;
1819 3182
1820 for (i = HEAP0; i < N + HEAP0; ++i) 3183 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1825 3188
1826 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3189 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1827 } 3190 }
1828} 3191}
1829 3192
1830static void noinline 3193ecb_noinline ecb_cold
3194static void
1831array_verify (EV_P_ W *ws, int cnt) 3195array_verify (EV_P_ W *ws, int cnt)
1832{ 3196{
1833 while (cnt--) 3197 while (cnt--)
1834 { 3198 {
1835 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3199 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1836 verify_watcher (EV_A_ ws [cnt]); 3200 verify_watcher (EV_A_ ws [cnt]);
1837 } 3201 }
1838} 3202}
1839#endif 3203#endif
1840 3204
1841#if EV_MINIMAL < 2 3205#if EV_FEATURE_API
1842void 3206void ecb_cold
1843ev_loop_verify (EV_P) 3207ev_verify (EV_P) EV_NOEXCEPT
1844{ 3208{
1845#if EV_VERIFY 3209#if EV_VERIFY
1846 int i; 3210 int i;
1847 WL w; 3211 WL w, w2;
1848 3212
1849 assert (activecnt >= -1); 3213 assert (activecnt >= -1);
1850 3214
1851 assert (fdchangemax >= fdchangecnt); 3215 assert (fdchangemax >= fdchangecnt);
1852 for (i = 0; i < fdchangecnt; ++i) 3216 for (i = 0; i < fdchangecnt; ++i)
1853 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3217 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1854 3218
1855 assert (anfdmax >= 0); 3219 assert (anfdmax >= 0);
1856 for (i = 0; i < anfdmax; ++i) 3220 for (i = 0; i < anfdmax; ++i)
3221 {
3222 int j = 0;
3223
1857 for (w = anfds [i].head; w; w = w->next) 3224 for (w = w2 = anfds [i].head; w; w = w->next)
1858 { 3225 {
1859 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
1860 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));
1861 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));
1862 } 3236 }
3237 }
1863 3238
1864 assert (timermax >= timercnt); 3239 assert (timermax >= timercnt);
1865 verify_heap (EV_A_ timers, timercnt); 3240 verify_heap (EV_A_ timers, timercnt);
1866 3241
1867#if EV_PERIODIC_ENABLE 3242#if EV_PERIODIC_ENABLE
… …
1882#if EV_FORK_ENABLE 3257#if EV_FORK_ENABLE
1883 assert (forkmax >= forkcnt); 3258 assert (forkmax >= forkcnt);
1884 array_verify (EV_A_ (W *)forks, forkcnt); 3259 array_verify (EV_A_ (W *)forks, forkcnt);
1885#endif 3260#endif
1886 3261
3262#if EV_CLEANUP_ENABLE
3263 assert (cleanupmax >= cleanupcnt);
3264 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
3265#endif
3266
1887#if EV_ASYNC_ENABLE 3267#if EV_ASYNC_ENABLE
1888 assert (asyncmax >= asynccnt); 3268 assert (asyncmax >= asynccnt);
1889 array_verify (EV_A_ (W *)asyncs, asynccnt); 3269 array_verify (EV_A_ (W *)asyncs, asynccnt);
1890#endif 3270#endif
1891 3271
3272#if EV_PREPARE_ENABLE
1892 assert (preparemax >= preparecnt); 3273 assert (preparemax >= preparecnt);
1893 array_verify (EV_A_ (W *)prepares, preparecnt); 3274 array_verify (EV_A_ (W *)prepares, preparecnt);
3275#endif
1894 3276
3277#if EV_CHECK_ENABLE
1895 assert (checkmax >= checkcnt); 3278 assert (checkmax >= checkcnt);
1896 array_verify (EV_A_ (W *)checks, checkcnt); 3279 array_verify (EV_A_ (W *)checks, checkcnt);
3280#endif
1897 3281
1898# if 0 3282# if 0
3283#if EV_CHILD_ENABLE
1899 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)
1900 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending) 3285 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
3286#endif
1901# endif 3287# endif
1902#endif 3288#endif
1903} 3289}
1904#endif 3290#endif
1905 3291
1906#if EV_MULTIPLICITY 3292#if EV_MULTIPLICITY
3293ecb_cold
1907struct ev_loop * 3294struct ev_loop *
1908ev_default_loop_init (unsigned int flags)
1909#else 3295#else
1910int 3296int
3297#endif
1911ev_default_loop (unsigned int flags) 3298ev_default_loop (unsigned int flags) EV_NOEXCEPT
1912#endif
1913{ 3299{
1914 if (!ev_default_loop_ptr) 3300 if (!ev_default_loop_ptr)
1915 { 3301 {
1916#if EV_MULTIPLICITY 3302#if EV_MULTIPLICITY
1917 EV_P = ev_default_loop_ptr = &default_loop_struct; 3303 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1921 3307
1922 loop_init (EV_A_ flags); 3308 loop_init (EV_A_ flags);
1923 3309
1924 if (ev_backend (EV_A)) 3310 if (ev_backend (EV_A))
1925 { 3311 {
1926#ifndef _WIN32 3312#if EV_CHILD_ENABLE
1927 ev_signal_init (&childev, childcb, SIGCHLD); 3313 ev_signal_init (&childev, childcb, SIGCHLD);
1928 ev_set_priority (&childev, EV_MAXPRI); 3314 ev_set_priority (&childev, EV_MAXPRI);
1929 ev_signal_start (EV_A_ &childev); 3315 ev_signal_start (EV_A_ &childev);
1930 ev_unref (EV_A); /* child watcher should not keep loop alive */ 3316 ev_unref (EV_A); /* child watcher should not keep loop alive */
1931#endif 3317#endif
… …
1936 3322
1937 return ev_default_loop_ptr; 3323 return ev_default_loop_ptr;
1938} 3324}
1939 3325
1940void 3326void
1941ev_default_destroy (void) 3327ev_loop_fork (EV_P) EV_NOEXCEPT
1942{ 3328{
1943#if EV_MULTIPLICITY 3329 postfork = 1;
1944 EV_P = ev_default_loop_ptr;
1945#endif
1946
1947 ev_default_loop_ptr = 0;
1948
1949#ifndef _WIN32
1950 ev_ref (EV_A); /* child watcher */
1951 ev_signal_stop (EV_A_ &childev);
1952#endif
1953
1954 loop_destroy (EV_A);
1955}
1956
1957void
1958ev_default_fork (void)
1959{
1960#if EV_MULTIPLICITY
1961 EV_P = ev_default_loop_ptr;
1962#endif
1963
1964 postfork = 1; /* must be in line with ev_loop_fork */
1965} 3330}
1966 3331
1967/*****************************************************************************/ 3332/*****************************************************************************/
1968 3333
1969void 3334void
… …
1971{ 3336{
1972 EV_CB_INVOKE ((W)w, revents); 3337 EV_CB_INVOKE ((W)w, revents);
1973} 3338}
1974 3339
1975unsigned int 3340unsigned int
1976ev_pending_count (EV_P) 3341ev_pending_count (EV_P) EV_NOEXCEPT
1977{ 3342{
1978 int pri; 3343 int pri;
1979 unsigned int count = 0; 3344 unsigned int count = 0;
1980 3345
1981 for (pri = NUMPRI; pri--; ) 3346 for (pri = NUMPRI; pri--; )
1982 count += pendingcnt [pri]; 3347 count += pendingcnt [pri];
1983 3348
1984 return count; 3349 return count;
1985} 3350}
1986 3351
1987void noinline 3352ecb_noinline
3353void
1988ev_invoke_pending (EV_P) 3354ev_invoke_pending (EV_P)
1989{ 3355{
1990 int pri; 3356 pendingpri = NUMPRI;
1991 3357
1992 for (pri = NUMPRI; pri--; ) 3358 do
3359 {
3360 --pendingpri;
3361
3362 /* pendingpri possibly gets modified in the inner loop */
1993 while (pendingcnt [pri]) 3363 while (pendingcnt [pendingpri])
1994 { 3364 {
1995 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3365 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
1996 3366
1997 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1998 /* ^ this is no longer true, as pending_w could be here */
1999
2000 p->w->pending = 0; 3367 p->w->pending = 0;
2001 EV_CB_INVOKE (p->w, p->events); 3368 EV_CB_INVOKE (p->w, p->events);
2002 EV_FREQUENT_CHECK; 3369 EV_FREQUENT_CHECK;
2003 } 3370 }
3371 }
3372 while (pendingpri);
2004} 3373}
2005 3374
2006#if EV_IDLE_ENABLE 3375#if EV_IDLE_ENABLE
2007/* make idle watchers pending. this handles the "call-idle */ 3376/* make idle watchers pending. this handles the "call-idle */
2008/* only when higher priorities are idle" logic */ 3377/* only when higher priorities are idle" logic */
2009inline_size void 3378inline_size void
2010idle_reify (EV_P) 3379idle_reify (EV_P)
2011{ 3380{
2012 if (expect_false (idleall)) 3381 if (ecb_expect_false (idleall))
2013 { 3382 {
2014 int pri; 3383 int pri;
2015 3384
2016 for (pri = NUMPRI; pri--; ) 3385 for (pri = NUMPRI; pri--; )
2017 { 3386 {
… …
2060 EV_FREQUENT_CHECK; 3429 EV_FREQUENT_CHECK;
2061 feed_reverse (EV_A_ (W)w); 3430 feed_reverse (EV_A_ (W)w);
2062 } 3431 }
2063 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 3432 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
2064 3433
2065 feed_reverse_done (EV_A_ EV_TIMEOUT); 3434 feed_reverse_done (EV_A_ EV_TIMER);
2066 } 3435 }
2067} 3436}
2068 3437
2069#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
2070/* make periodics pending */ 3465/* make periodics pending */
2071inline_size void 3466inline_size void
2072periodics_reify (EV_P) 3467periodics_reify (EV_P)
2073{ 3468{
2074 EV_FREQUENT_CHECK; 3469 EV_FREQUENT_CHECK;
2075 3470
2076 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3471 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2077 { 3472 {
2078 int feed_count = 0;
2079
2080 do 3473 do
2081 { 3474 {
2082 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3475 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2083 3476
2084 /*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)));*/
… …
2093 ANHE_at_cache (periodics [HEAP0]); 3486 ANHE_at_cache (periodics [HEAP0]);
2094 downheap (periodics, periodiccnt, HEAP0); 3487 downheap (periodics, periodiccnt, HEAP0);
2095 } 3488 }
2096 else if (w->interval) 3489 else if (w->interval)
2097 { 3490 {
2098 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3491 periodic_recalc (EV_A_ w);
2099 /* if next trigger time is not sufficiently in the future, put it there */
2100 /* this might happen because of floating point inexactness */
2101 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2102 {
2103 ev_at (w) += w->interval;
2104
2105 /* if interval is unreasonably low we might still have a time in the past */
2106 /* so correct this. this will make the periodic very inexact, but the user */
2107 /* has effectively asked to get triggered more often than possible */
2108 if (ev_at (w) < ev_rt_now)
2109 ev_at (w) = ev_rt_now;
2110 }
2111
2112 ANHE_at_cache (periodics [HEAP0]); 3492 ANHE_at_cache (periodics [HEAP0]);
2113 downheap (periodics, periodiccnt, HEAP0); 3493 downheap (periodics, periodiccnt, HEAP0);
2114 } 3494 }
2115 else 3495 else
2116 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3496 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2123 feed_reverse_done (EV_A_ EV_PERIODIC); 3503 feed_reverse_done (EV_A_ EV_PERIODIC);
2124 } 3504 }
2125} 3505}
2126 3506
2127/* simply recalculate all periodics */ 3507/* simply recalculate all periodics */
2128/* 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? */
2129static void noinline 3509ecb_noinline ecb_cold
3510static void
2130periodics_reschedule (EV_P) 3511periodics_reschedule (EV_P)
2131{ 3512{
2132 int i; 3513 int i;
2133 3514
2134 /* adjust periodics after time jump */ 3515 /* adjust periodics after time jump */
… …
2137 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3518 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2138 3519
2139 if (w->reschedule_cb) 3520 if (w->reschedule_cb)
2140 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3521 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2141 else if (w->interval) 3522 else if (w->interval)
2142 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3523 periodic_recalc (EV_A_ w);
2143 3524
2144 ANHE_at_cache (periodics [i]); 3525 ANHE_at_cache (periodics [i]);
2145 } 3526 }
2146 3527
2147 reheap (periodics, periodiccnt); 3528 reheap (periodics, periodiccnt);
2148} 3529}
2149#endif 3530#endif
2150 3531
2151/* adjust all timers by a given offset */ 3532/* adjust all timers by a given offset */
2152static void noinline 3533ecb_noinline ecb_cold
3534static void
2153timers_reschedule (EV_P_ ev_tstamp adjust) 3535timers_reschedule (EV_P_ ev_tstamp adjust)
2154{ 3536{
2155 int i; 3537 int i;
2156 3538
2157 for (i = 0; i < timercnt; ++i) 3539 for (i = 0; i < timercnt; ++i)
… …
2161 ANHE_at_cache (*he); 3543 ANHE_at_cache (*he);
2162 } 3544 }
2163} 3545}
2164 3546
2165/* fetch new monotonic and realtime times from the kernel */ 3547/* fetch new monotonic and realtime times from the kernel */
2166/* also detetc if there was a timejump, and act accordingly */ 3548/* also detect if there was a timejump, and act accordingly */
2167inline_speed void 3549inline_speed void
2168time_update (EV_P_ ev_tstamp max_block) 3550time_update (EV_P_ ev_tstamp max_block)
2169{ 3551{
2170#if EV_USE_MONOTONIC 3552#if EV_USE_MONOTONIC
2171 if (expect_true (have_monotonic)) 3553 if (ecb_expect_true (have_monotonic))
2172 { 3554 {
2173 int i; 3555 int i;
2174 ev_tstamp odiff = rtmn_diff; 3556 ev_tstamp odiff = rtmn_diff;
2175 3557
2176 mn_now = get_clock (); 3558 mn_now = get_clock ();
2177 3559
2178 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3560 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
2179 /* interpolate in the meantime */ 3561 /* interpolate in the meantime */
2180 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 3562 if (ecb_expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
2181 { 3563 {
2182 ev_rt_now = rtmn_diff + mn_now; 3564 ev_rt_now = rtmn_diff + mn_now;
2183 return; 3565 return;
2184 } 3566 }
2185 3567
… …
2194 * 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
2195 * in the unlikely event of having been preempted here. 3577 * in the unlikely event of having been preempted here.
2196 */ 3578 */
2197 for (i = 4; --i; ) 3579 for (i = 4; --i; )
2198 { 3580 {
3581 ev_tstamp diff;
2199 rtmn_diff = ev_rt_now - mn_now; 3582 rtmn_diff = ev_rt_now - mn_now;
2200 3583
3584 diff = odiff - rtmn_diff;
3585
2201 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3586 if (ecb_expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2202 return; /* all is well */ 3587 return; /* all is well */
2203 3588
2204 ev_rt_now = ev_time (); 3589 ev_rt_now = ev_time ();
2205 mn_now = get_clock (); 3590 mn_now = get_clock ();
2206 now_floor = mn_now; 3591 now_floor = mn_now;
… …
2215 else 3600 else
2216#endif 3601#endif
2217 { 3602 {
2218 ev_rt_now = ev_time (); 3603 ev_rt_now = ev_time ();
2219 3604
2220 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))
2221 { 3606 {
2222 /* 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 */
2223 timers_reschedule (EV_A_ ev_rt_now - mn_now); 3608 timers_reschedule (EV_A_ ev_rt_now - mn_now);
2224#if EV_PERIODIC_ENABLE 3609#if EV_PERIODIC_ENABLE
2225 periodics_reschedule (EV_A); 3610 periodics_reschedule (EV_A);
… …
2228 3613
2229 mn_now = ev_rt_now; 3614 mn_now = ev_rt_now;
2230 } 3615 }
2231} 3616}
2232 3617
2233void 3618int
2234ev_loop (EV_P_ int flags) 3619ev_run (EV_P_ int flags)
2235{ 3620{
2236#if EV_MINIMAL < 2 3621#if EV_FEATURE_API
2237 ++loop_depth; 3622 ++loop_depth;
2238#endif 3623#endif
2239 3624
2240 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));
2241 3626
2242 loop_done = EVUNLOOP_CANCEL; 3627 loop_done = EVBREAK_CANCEL;
2243 3628
2244 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 */
2245 3630
2246 do 3631 do
2247 { 3632 {
2248#if EV_VERIFY >= 2 3633#if EV_VERIFY >= 2
2249 ev_loop_verify (EV_A); 3634 ev_verify (EV_A);
2250#endif 3635#endif
2251 3636
2252#ifndef _WIN32 3637#ifndef _WIN32
2253 if (expect_false (curpid)) /* penalise the forking check even more */ 3638 if (ecb_expect_false (curpid)) /* penalise the forking check even more */
2254 if (expect_false (getpid () != curpid)) 3639 if (ecb_expect_false (getpid () != curpid))
2255 { 3640 {
2256 curpid = getpid (); 3641 curpid = getpid ();
2257 postfork = 1; 3642 postfork = 1;
2258 } 3643 }
2259#endif 3644#endif
2260 3645
2261#if EV_FORK_ENABLE 3646#if EV_FORK_ENABLE
2262 /* we might have forked, so queue fork handlers */ 3647 /* we might have forked, so queue fork handlers */
2263 if (expect_false (postfork)) 3648 if (ecb_expect_false (postfork))
2264 if (forkcnt) 3649 if (forkcnt)
2265 { 3650 {
2266 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3651 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2267 EV_INVOKE_PENDING; 3652 EV_INVOKE_PENDING;
2268 } 3653 }
2269#endif 3654#endif
2270 3655
3656#if EV_PREPARE_ENABLE
2271 /* queue prepare watchers (and execute them) */ 3657 /* queue prepare watchers (and execute them) */
2272 if (expect_false (preparecnt)) 3658 if (ecb_expect_false (preparecnt))
2273 { 3659 {
2274 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3660 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2275 EV_INVOKE_PENDING; 3661 EV_INVOKE_PENDING;
2276 } 3662 }
3663#endif
2277 3664
2278 if (expect_false (loop_done)) 3665 if (ecb_expect_false (loop_done))
2279 break; 3666 break;
2280 3667
2281 /* we might have forked, so reify kernel state if necessary */ 3668 /* we might have forked, so reify kernel state if necessary */
2282 if (expect_false (postfork)) 3669 if (ecb_expect_false (postfork))
2283 loop_fork (EV_A); 3670 loop_fork (EV_A);
2284 3671
2285 /* update fd-related kernel structures */ 3672 /* update fd-related kernel structures */
2286 fd_reify (EV_A); 3673 fd_reify (EV_A);
2287 3674
2288 /* calculate blocking time */ 3675 /* calculate blocking time */
2289 { 3676 {
2290 ev_tstamp waittime = 0.; 3677 ev_tstamp waittime = 0.;
2291 ev_tstamp sleeptime = 0.; 3678 ev_tstamp sleeptime = 0.;
2292 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
2293 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3691 if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2294 { 3692 {
2295 /* remember old timestamp for io_blocktime calculation */
2296 ev_tstamp prev_mn_now = mn_now;
2297
2298 /* update time to cancel out callback processing overhead */
2299 time_update (EV_A_ 1e100);
2300
2301 waittime = MAX_BLOCKTIME; 3693 waittime = MAX_BLOCKTIME;
2302 3694
2303 if (timercnt) 3695 if (timercnt)
2304 { 3696 {
2305 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3697 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2306 if (waittime > to) waittime = to; 3698 if (waittime > to) waittime = to;
2307 } 3699 }
2308 3700
2309#if EV_PERIODIC_ENABLE 3701#if EV_PERIODIC_ENABLE
2310 if (periodiccnt) 3702 if (periodiccnt)
2311 { 3703 {
2312 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3704 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2313 if (waittime > to) waittime = to; 3705 if (waittime > to) waittime = to;
2314 } 3706 }
2315#endif 3707#endif
2316 3708
2317 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3709 /* don't let timeouts decrease the waittime below timeout_blocktime */
2318 if (expect_false (waittime < timeout_blocktime)) 3710 if (ecb_expect_false (waittime < timeout_blocktime))
2319 waittime = timeout_blocktime; 3711 waittime = timeout_blocktime;
2320 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
2321 /* extra check because io_blocktime is commonly 0 */ 3718 /* extra check because io_blocktime is commonly 0 */
2322 if (expect_false (io_blocktime)) 3719 if (ecb_expect_false (io_blocktime))
2323 { 3720 {
2324 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3721 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2325 3722
2326 if (sleeptime > waittime - backend_fudge) 3723 if (sleeptime > waittime - backend_mintime)
2327 sleeptime = waittime - backend_fudge; 3724 sleeptime = waittime - backend_mintime;
2328 3725
2329 if (expect_true (sleeptime > 0.)) 3726 if (ecb_expect_true (sleeptime > 0.))
2330 { 3727 {
2331 ev_sleep (sleeptime); 3728 ev_sleep (sleeptime);
2332 waittime -= sleeptime; 3729 waittime -= sleeptime;
2333 } 3730 }
2334 } 3731 }
2335 } 3732 }
2336 3733
2337#if EV_MINIMAL < 2 3734#if EV_FEATURE_API
2338 ++loop_count; 3735 ++loop_count;
2339#endif 3736#endif
2340 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3737 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2341 backend_poll (EV_A_ waittime); 3738 backend_poll (EV_A_ waittime);
2342 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 }
2343 3749
2344 /* update ev_rt_now, do magic */ 3750 /* update ev_rt_now, do magic */
2345 time_update (EV_A_ waittime + sleeptime); 3751 time_update (EV_A_ waittime + sleeptime);
2346 } 3752 }
2347 3753
… …
2354#if EV_IDLE_ENABLE 3760#if EV_IDLE_ENABLE
2355 /* queue idle watchers unless other events are pending */ 3761 /* queue idle watchers unless other events are pending */
2356 idle_reify (EV_A); 3762 idle_reify (EV_A);
2357#endif 3763#endif
2358 3764
3765#if EV_CHECK_ENABLE
2359 /* queue check watchers, to be executed first */ 3766 /* queue check watchers, to be executed first */
2360 if (expect_false (checkcnt)) 3767 if (ecb_expect_false (checkcnt))
2361 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3768 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3769#endif
2362 3770
2363 EV_INVOKE_PENDING; 3771 EV_INVOKE_PENDING;
2364 } 3772 }
2365 while (expect_true ( 3773 while (ecb_expect_true (
2366 activecnt 3774 activecnt
2367 && !loop_done 3775 && !loop_done
2368 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3776 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2369 )); 3777 ));
2370 3778
2371 if (loop_done == EVUNLOOP_ONE) 3779 if (loop_done == EVBREAK_ONE)
2372 loop_done = EVUNLOOP_CANCEL; 3780 loop_done = EVBREAK_CANCEL;
2373 3781
2374#if EV_MINIMAL < 2 3782#if EV_FEATURE_API
2375 --loop_depth; 3783 --loop_depth;
2376#endif 3784#endif
2377}
2378 3785
3786 return activecnt;
3787}
3788
2379void 3789void
2380ev_unloop (EV_P_ int how) 3790ev_break (EV_P_ int how) EV_NOEXCEPT
2381{ 3791{
2382 loop_done = how; 3792 loop_done = how;
2383} 3793}
2384 3794
2385void 3795void
2386ev_ref (EV_P) 3796ev_ref (EV_P) EV_NOEXCEPT
2387{ 3797{
2388 ++activecnt; 3798 ++activecnt;
2389} 3799}
2390 3800
2391void 3801void
2392ev_unref (EV_P) 3802ev_unref (EV_P) EV_NOEXCEPT
2393{ 3803{
2394 --activecnt; 3804 --activecnt;
2395} 3805}
2396 3806
2397void 3807void
2398ev_now_update (EV_P) 3808ev_now_update (EV_P) EV_NOEXCEPT
2399{ 3809{
2400 time_update (EV_A_ 1e100); 3810 time_update (EV_A_ 1e100);
2401} 3811}
2402 3812
2403void 3813void
2404ev_suspend (EV_P) 3814ev_suspend (EV_P) EV_NOEXCEPT
2405{ 3815{
2406 ev_now_update (EV_A); 3816 ev_now_update (EV_A);
2407} 3817}
2408 3818
2409void 3819void
2410ev_resume (EV_P) 3820ev_resume (EV_P) EV_NOEXCEPT
2411{ 3821{
2412 ev_tstamp mn_prev = mn_now; 3822 ev_tstamp mn_prev = mn_now;
2413 3823
2414 ev_now_update (EV_A); 3824 ev_now_update (EV_A);
2415 timers_reschedule (EV_A_ mn_now - mn_prev); 3825 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2432inline_size void 3842inline_size void
2433wlist_del (WL *head, WL elem) 3843wlist_del (WL *head, WL elem)
2434{ 3844{
2435 while (*head) 3845 while (*head)
2436 { 3846 {
2437 if (expect_true (*head == elem)) 3847 if (ecb_expect_true (*head == elem))
2438 { 3848 {
2439 *head = elem->next; 3849 *head = elem->next;
2440 break; 3850 break;
2441 } 3851 }
2442 3852
… …
2454 w->pending = 0; 3864 w->pending = 0;
2455 } 3865 }
2456} 3866}
2457 3867
2458int 3868int
2459ev_clear_pending (EV_P_ void *w) 3869ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
2460{ 3870{
2461 W w_ = (W)w; 3871 W w_ = (W)w;
2462 int pending = w_->pending; 3872 int pending = w_->pending;
2463 3873
2464 if (expect_true (pending)) 3874 if (ecb_expect_true (pending))
2465 { 3875 {
2466 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 3876 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2467 p->w = (W)&pending_w; 3877 p->w = (W)&pending_w;
2468 w_->pending = 0; 3878 w_->pending = 0;
2469 return p->events; 3879 return p->events;
… …
2496 w->active = 0; 3906 w->active = 0;
2497} 3907}
2498 3908
2499/*****************************************************************************/ 3909/*****************************************************************************/
2500 3910
2501void noinline 3911ecb_noinline
3912void
2502ev_io_start (EV_P_ ev_io *w) 3913ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
2503{ 3914{
2504 int fd = w->fd; 3915 int fd = w->fd;
2505 3916
2506 if (expect_false (ev_is_active (w))) 3917 if (ecb_expect_false (ev_is_active (w)))
2507 return; 3918 return;
2508 3919
2509 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 3920 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2510 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))));
2511 3922
3923#if EV_VERIFY >= 2
3924 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
3925#endif
2512 EV_FREQUENT_CHECK; 3926 EV_FREQUENT_CHECK;
2513 3927
2514 ev_start (EV_A_ (W)w, 1); 3928 ev_start (EV_A_ (W)w, 1);
2515 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3929 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
2516 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));
2517 3934
2518 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);
2519 w->events &= ~EV__IOFDSET; 3936 w->events &= ~EV__IOFDSET;
2520 3937
2521 EV_FREQUENT_CHECK; 3938 EV_FREQUENT_CHECK;
2522} 3939}
2523 3940
2524void noinline 3941ecb_noinline
3942void
2525ev_io_stop (EV_P_ ev_io *w) 3943ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
2526{ 3944{
2527 clear_pending (EV_A_ (W)w); 3945 clear_pending (EV_A_ (W)w);
2528 if (expect_false (!ev_is_active (w))) 3946 if (ecb_expect_false (!ev_is_active (w)))
2529 return; 3947 return;
2530 3948
2531 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));
2532 3950
3951#if EV_VERIFY >= 2
3952 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
3953#endif
2533 EV_FREQUENT_CHECK; 3954 EV_FREQUENT_CHECK;
2534 3955
2535 wlist_del (&anfds[w->fd].head, (WL)w); 3956 wlist_del (&anfds[w->fd].head, (WL)w);
2536 ev_stop (EV_A_ (W)w); 3957 ev_stop (EV_A_ (W)w);
2537 3958
2538 fd_change (EV_A_ w->fd, 1); 3959 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2539 3960
2540 EV_FREQUENT_CHECK; 3961 EV_FREQUENT_CHECK;
2541} 3962}
2542 3963
2543void noinline 3964ecb_noinline
3965void
2544ev_timer_start (EV_P_ ev_timer *w) 3966ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
2545{ 3967{
2546 if (expect_false (ev_is_active (w))) 3968 if (ecb_expect_false (ev_is_active (w)))
2547 return; 3969 return;
2548 3970
2549 ev_at (w) += mn_now; 3971 ev_at (w) += mn_now;
2550 3972
2551 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.));
2552 3974
2553 EV_FREQUENT_CHECK; 3975 EV_FREQUENT_CHECK;
2554 3976
2555 ++timercnt; 3977 ++timercnt;
2556 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 3978 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
2557 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 3979 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
2558 ANHE_w (timers [ev_active (w)]) = (WT)w; 3980 ANHE_w (timers [ev_active (w)]) = (WT)w;
2559 ANHE_at_cache (timers [ev_active (w)]); 3981 ANHE_at_cache (timers [ev_active (w)]);
2560 upheap (timers, ev_active (w)); 3982 upheap (timers, ev_active (w));
2561 3983
2562 EV_FREQUENT_CHECK; 3984 EV_FREQUENT_CHECK;
2563 3985
2564 /*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));*/
2565} 3987}
2566 3988
2567void noinline 3989ecb_noinline
3990void
2568ev_timer_stop (EV_P_ ev_timer *w) 3991ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
2569{ 3992{
2570 clear_pending (EV_A_ (W)w); 3993 clear_pending (EV_A_ (W)w);
2571 if (expect_false (!ev_is_active (w))) 3994 if (ecb_expect_false (!ev_is_active (w)))
2572 return; 3995 return;
2573 3996
2574 EV_FREQUENT_CHECK; 3997 EV_FREQUENT_CHECK;
2575 3998
2576 { 3999 {
… …
2578 4001
2579 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));
2580 4003
2581 --timercnt; 4004 --timercnt;
2582 4005
2583 if (expect_true (active < timercnt + HEAP0)) 4006 if (ecb_expect_true (active < timercnt + HEAP0))
2584 { 4007 {
2585 timers [active] = timers [timercnt + HEAP0]; 4008 timers [active] = timers [timercnt + HEAP0];
2586 adjustheap (timers, timercnt, active); 4009 adjustheap (timers, timercnt, active);
2587 } 4010 }
2588 } 4011 }
2589 4012
2590 EV_FREQUENT_CHECK;
2591
2592 ev_at (w) -= mn_now; 4013 ev_at (w) -= mn_now;
2593 4014
2594 ev_stop (EV_A_ (W)w); 4015 ev_stop (EV_A_ (W)w);
2595}
2596 4016
2597void noinline 4017 EV_FREQUENT_CHECK;
4018}
4019
4020ecb_noinline
4021void
2598ev_timer_again (EV_P_ ev_timer *w) 4022ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
2599{ 4023{
2600 EV_FREQUENT_CHECK; 4024 EV_FREQUENT_CHECK;
4025
4026 clear_pending (EV_A_ (W)w);
2601 4027
2602 if (ev_is_active (w)) 4028 if (ev_is_active (w))
2603 { 4029 {
2604 if (w->repeat) 4030 if (w->repeat)
2605 { 4031 {
… …
2618 4044
2619 EV_FREQUENT_CHECK; 4045 EV_FREQUENT_CHECK;
2620} 4046}
2621 4047
2622ev_tstamp 4048ev_tstamp
2623ev_timer_remaining (EV_P_ ev_timer *w) 4049ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
2624{ 4050{
2625 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4051 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2626} 4052}
2627 4053
2628#if EV_PERIODIC_ENABLE 4054#if EV_PERIODIC_ENABLE
2629void noinline 4055ecb_noinline
4056void
2630ev_periodic_start (EV_P_ ev_periodic *w) 4057ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
2631{ 4058{
2632 if (expect_false (ev_is_active (w))) 4059 if (ecb_expect_false (ev_is_active (w)))
2633 return; 4060 return;
2634 4061
2635 if (w->reschedule_cb) 4062 if (w->reschedule_cb)
2636 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4063 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2637 else if (w->interval) 4064 else if (w->interval)
2638 { 4065 {
2639 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.));
2640 /* this formula differs from the one in periodic_reify because we do not always round up */ 4067 periodic_recalc (EV_A_ w);
2641 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2642 } 4068 }
2643 else 4069 else
2644 ev_at (w) = w->offset; 4070 ev_at (w) = w->offset;
2645 4071
2646 EV_FREQUENT_CHECK; 4072 EV_FREQUENT_CHECK;
2647 4073
2648 ++periodiccnt; 4074 ++periodiccnt;
2649 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4075 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2650 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4076 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
2651 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4077 ANHE_w (periodics [ev_active (w)]) = (WT)w;
2652 ANHE_at_cache (periodics [ev_active (w)]); 4078 ANHE_at_cache (periodics [ev_active (w)]);
2653 upheap (periodics, ev_active (w)); 4079 upheap (periodics, ev_active (w));
2654 4080
2655 EV_FREQUENT_CHECK; 4081 EV_FREQUENT_CHECK;
2656 4082
2657 /*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));*/
2658} 4084}
2659 4085
2660void noinline 4086ecb_noinline
4087void
2661ev_periodic_stop (EV_P_ ev_periodic *w) 4088ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
2662{ 4089{
2663 clear_pending (EV_A_ (W)w); 4090 clear_pending (EV_A_ (W)w);
2664 if (expect_false (!ev_is_active (w))) 4091 if (ecb_expect_false (!ev_is_active (w)))
2665 return; 4092 return;
2666 4093
2667 EV_FREQUENT_CHECK; 4094 EV_FREQUENT_CHECK;
2668 4095
2669 { 4096 {
… …
2671 4098
2672 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));
2673 4100
2674 --periodiccnt; 4101 --periodiccnt;
2675 4102
2676 if (expect_true (active < periodiccnt + HEAP0)) 4103 if (ecb_expect_true (active < periodiccnt + HEAP0))
2677 { 4104 {
2678 periodics [active] = periodics [periodiccnt + HEAP0]; 4105 periodics [active] = periodics [periodiccnt + HEAP0];
2679 adjustheap (periodics, periodiccnt, active); 4106 adjustheap (periodics, periodiccnt, active);
2680 } 4107 }
2681 } 4108 }
2682 4109
2683 EV_FREQUENT_CHECK;
2684
2685 ev_stop (EV_A_ (W)w); 4110 ev_stop (EV_A_ (W)w);
2686}
2687 4111
2688void noinline 4112 EV_FREQUENT_CHECK;
4113}
4114
4115ecb_noinline
4116void
2689ev_periodic_again (EV_P_ ev_periodic *w) 4117ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
2690{ 4118{
2691 /* TODO: use adjustheap and recalculation */ 4119 /* TODO: use adjustheap and recalculation */
2692 ev_periodic_stop (EV_A_ w); 4120 ev_periodic_stop (EV_A_ w);
2693 ev_periodic_start (EV_A_ w); 4121 ev_periodic_start (EV_A_ w);
2694} 4122}
… …
2696 4124
2697#ifndef SA_RESTART 4125#ifndef SA_RESTART
2698# define SA_RESTART 0 4126# define SA_RESTART 0
2699#endif 4127#endif
2700 4128
2701void noinline 4129#if EV_SIGNAL_ENABLE
4130
4131ecb_noinline
4132void
2702ev_signal_start (EV_P_ ev_signal *w) 4133ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
2703{ 4134{
2704 if (expect_false (ev_is_active (w))) 4135 if (ecb_expect_false (ev_is_active (w)))
2705 return; 4136 return;
2706 4137
2707 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));
2708 4139
2709#if EV_MULTIPLICITY 4140#if EV_MULTIPLICITY
2710 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",
2711 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4142 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2712 4143
2713 signals [w->signum - 1].loop = EV_A; 4144 signals [w->signum - 1].loop = EV_A;
4145 ECB_MEMORY_FENCE_RELEASE;
2714#endif 4146#endif
2715 4147
2716 EV_FREQUENT_CHECK; 4148 EV_FREQUENT_CHECK;
2717 4149
2718#if EV_USE_SIGNALFD 4150#if EV_USE_SIGNALFD
… …
2751 if (!((WL)w)->next) 4183 if (!((WL)w)->next)
2752# if EV_USE_SIGNALFD 4184# if EV_USE_SIGNALFD
2753 if (sigfd < 0) /*TODO*/ 4185 if (sigfd < 0) /*TODO*/
2754# endif 4186# endif
2755 { 4187 {
2756# if _WIN32 4188# ifdef _WIN32
4189 evpipe_init (EV_A);
4190
2757 signal (w->signum, ev_sighandler); 4191 signal (w->signum, ev_sighandler);
2758# else 4192# else
2759 struct sigaction sa; 4193 struct sigaction sa;
2760 4194
2761 evpipe_init (EV_A); 4195 evpipe_init (EV_A);
… …
2763 sa.sa_handler = ev_sighandler; 4197 sa.sa_handler = ev_sighandler;
2764 sigfillset (&sa.sa_mask); 4198 sigfillset (&sa.sa_mask);
2765 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 */
2766 sigaction (w->signum, &sa, 0); 4200 sigaction (w->signum, &sa, 0);
2767 4201
4202 if (origflags & EVFLAG_NOSIGMASK)
4203 {
2768 sigemptyset (&sa.sa_mask); 4204 sigemptyset (&sa.sa_mask);
2769 sigaddset (&sa.sa_mask, w->signum); 4205 sigaddset (&sa.sa_mask, w->signum);
2770 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 4206 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
4207 }
2771#endif 4208#endif
2772 } 4209 }
2773 4210
2774 EV_FREQUENT_CHECK; 4211 EV_FREQUENT_CHECK;
2775} 4212}
2776 4213
2777void noinline 4214ecb_noinline
4215void
2778ev_signal_stop (EV_P_ ev_signal *w) 4216ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
2779{ 4217{
2780 clear_pending (EV_A_ (W)w); 4218 clear_pending (EV_A_ (W)w);
2781 if (expect_false (!ev_is_active (w))) 4219 if (ecb_expect_false (!ev_is_active (w)))
2782 return; 4220 return;
2783 4221
2784 EV_FREQUENT_CHECK; 4222 EV_FREQUENT_CHECK;
2785 4223
2786 wlist_del (&signals [w->signum - 1].head, (WL)w); 4224 wlist_del (&signals [w->signum - 1].head, (WL)w);
… …
2792 signals [w->signum - 1].loop = 0; /* unattach from signal */ 4230 signals [w->signum - 1].loop = 0; /* unattach from signal */
2793#endif 4231#endif
2794#if EV_USE_SIGNALFD 4232#if EV_USE_SIGNALFD
2795 if (sigfd >= 0) 4233 if (sigfd >= 0)
2796 { 4234 {
2797 sigprocmask (SIG_UNBLOCK, &sigfd_set, 0);//D 4235 sigset_t ss;
4236
4237 sigemptyset (&ss);
4238 sigaddset (&ss, w->signum);
2798 sigdelset (&sigfd_set, w->signum); 4239 sigdelset (&sigfd_set, w->signum);
4240
2799 signalfd (sigfd, &sigfd_set, 0); 4241 signalfd (sigfd, &sigfd_set, 0);
2800 sigprocmask (SIG_BLOCK, &sigfd_set, 0);//D 4242 sigprocmask (SIG_UNBLOCK, &ss, 0);
2801 /*TODO: maybe unblock signal? */
2802 } 4243 }
2803 else 4244 else
2804#endif 4245#endif
2805 signal (w->signum, SIG_DFL); 4246 signal (w->signum, SIG_DFL);
2806 } 4247 }
2807 4248
2808 EV_FREQUENT_CHECK; 4249 EV_FREQUENT_CHECK;
2809} 4250}
2810 4251
4252#endif
4253
4254#if EV_CHILD_ENABLE
4255
2811void 4256void
2812ev_child_start (EV_P_ ev_child *w) 4257ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
2813{ 4258{
2814#if EV_MULTIPLICITY 4259#if EV_MULTIPLICITY
2815 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));
2816#endif 4261#endif
2817 if (expect_false (ev_is_active (w))) 4262 if (ecb_expect_false (ev_is_active (w)))
2818 return; 4263 return;
2819 4264
2820 EV_FREQUENT_CHECK; 4265 EV_FREQUENT_CHECK;
2821 4266
2822 ev_start (EV_A_ (W)w, 1); 4267 ev_start (EV_A_ (W)w, 1);
2823 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4268 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2824 4269
2825 EV_FREQUENT_CHECK; 4270 EV_FREQUENT_CHECK;
2826} 4271}
2827 4272
2828void 4273void
2829ev_child_stop (EV_P_ ev_child *w) 4274ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
2830{ 4275{
2831 clear_pending (EV_A_ (W)w); 4276 clear_pending (EV_A_ (W)w);
2832 if (expect_false (!ev_is_active (w))) 4277 if (ecb_expect_false (!ev_is_active (w)))
2833 return; 4278 return;
2834 4279
2835 EV_FREQUENT_CHECK; 4280 EV_FREQUENT_CHECK;
2836 4281
2837 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4282 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2838 ev_stop (EV_A_ (W)w); 4283 ev_stop (EV_A_ (W)w);
2839 4284
2840 EV_FREQUENT_CHECK; 4285 EV_FREQUENT_CHECK;
2841} 4286}
4287
4288#endif
2842 4289
2843#if EV_STAT_ENABLE 4290#if EV_STAT_ENABLE
2844 4291
2845# ifdef _WIN32 4292# ifdef _WIN32
2846# undef lstat 4293# undef lstat
… …
2849 4296
2850#define DEF_STAT_INTERVAL 5.0074891 4297#define DEF_STAT_INTERVAL 5.0074891
2851#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4298#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2852#define MIN_STAT_INTERVAL 0.1074891 4299#define MIN_STAT_INTERVAL 0.1074891
2853 4300
2854static 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);
2855 4302
2856#if EV_USE_INOTIFY 4303#if EV_USE_INOTIFY
2857# define EV_INOTIFY_BUFSIZE 8192
2858 4304
2859static 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
2860infy_add (EV_P_ ev_stat *w) 4310infy_add (EV_P_ ev_stat *w)
2861{ 4311{
2862 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);
2863 4316
2864 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 */
2865 { 4343 }
4344 else
4345 {
4346 /* can't use inotify, continue to stat */
2866 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4347 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2867 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2868 4348
2869 /* monitor some parent directory for speedup hints */ 4349 /* if path is not there, monitor some parent directory for speedup hints */
2870 /* 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, */
2871 /* but an efficiency issue only */ 4351 /* but an efficiency issue only */
2872 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 4352 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2873 { 4353 {
2874 char path [4096]; 4354 char path [4096];
… …
2884 if (!pend || pend == path) 4364 if (!pend || pend == path)
2885 break; 4365 break;
2886 4366
2887 *pend = 0; 4367 *pend = 0;
2888 w->wd = inotify_add_watch (fs_fd, path, mask); 4368 w->wd = inotify_add_watch (fs_fd, path, mask);
2889 } 4369 }
2890 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 4370 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2891 } 4371 }
2892 } 4372 }
2893 4373
2894 if (w->wd >= 0) 4374 if (w->wd >= 0)
2895 {
2896 struct statfs sfs;
2897
2898 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);
2899 4376
2900 /* now local changes will be tracked by inotify, but remote changes won't */ 4377 /* now re-arm timer, if required */
2901 /* unless the filesystem it known to be local, we therefore still poll */ 4378 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2902 /* also do poll on <2.6.25, but with normal frequency */
2903
2904 if (fs_2625 && !statfs (w->path, &sfs))
2905 if (sfs.f_type == 0x1373 /* devfs */
2906 || sfs.f_type == 0xEF53 /* ext2/3 */
2907 || sfs.f_type == 0x3153464a /* jfs */
2908 || sfs.f_type == 0x52654973 /* reiser3 */
2909 || sfs.f_type == 0x01021994 /* tempfs */
2910 || sfs.f_type == 0x58465342 /* xfs */)
2911 return;
2912
2913 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2914 ev_timer_again (EV_A_ &w->timer); 4379 ev_timer_again (EV_A_ &w->timer);
2915 } 4380 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2916} 4381}
2917 4382
2918static void noinline 4383ecb_noinline
4384static void
2919infy_del (EV_P_ ev_stat *w) 4385infy_del (EV_P_ ev_stat *w)
2920{ 4386{
2921 int slot; 4387 int slot;
2922 int wd = w->wd; 4388 int wd = w->wd;
2923 4389
2924 if (wd < 0) 4390 if (wd < 0)
2925 return; 4391 return;
2926 4392
2927 w->wd = -2; 4393 w->wd = -2;
2928 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 4394 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2929 wlist_del (&fs_hash [slot].head, (WL)w); 4395 wlist_del (&fs_hash [slot].head, (WL)w);
2930 4396
2931 /* remove this watcher, if others are watching it, they will rearm */ 4397 /* remove this watcher, if others are watching it, they will rearm */
2932 inotify_rm_watch (fs_fd, wd); 4398 inotify_rm_watch (fs_fd, wd);
2933} 4399}
2934 4400
2935static void noinline 4401ecb_noinline
4402static void
2936infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4403infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2937{ 4404{
2938 if (slot < 0) 4405 if (slot < 0)
2939 /* overflow, need to check for all hash slots */ 4406 /* overflow, need to check for all hash slots */
2940 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4407 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2941 infy_wd (EV_A_ slot, wd, ev); 4408 infy_wd (EV_A_ slot, wd, ev);
2942 else 4409 else
2943 { 4410 {
2944 WL w_; 4411 WL w_;
2945 4412
2946 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 4413 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2947 { 4414 {
2948 ev_stat *w = (ev_stat *)w_; 4415 ev_stat *w = (ev_stat *)w_;
2949 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 */
2950 4417
2951 if (w->wd == wd || wd == -1) 4418 if (w->wd == wd || wd == -1)
2952 { 4419 {
2953 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 4420 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2954 { 4421 {
2955 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);
2956 w->wd = -1; 4423 w->wd = -1;
2957 infy_add (EV_A_ w); /* re-add, no matter what */ 4424 infy_add (EV_A_ w); /* re-add, no matter what */
2958 } 4425 }
2959 4426
2960 stat_timer_cb (EV_A_ &w->timer, 0); 4427 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2965 4432
2966static void 4433static void
2967infy_cb (EV_P_ ev_io *w, int revents) 4434infy_cb (EV_P_ ev_io *w, int revents)
2968{ 4435{
2969 char buf [EV_INOTIFY_BUFSIZE]; 4436 char buf [EV_INOTIFY_BUFSIZE];
2970 struct inotify_event *ev = (struct inotify_event *)buf;
2971 int ofs; 4437 int ofs;
2972 int len = read (fs_fd, buf, sizeof (buf)); 4438 int len = read (fs_fd, buf, sizeof (buf));
2973 4439
2974 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);
2975 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 }
2976} 4446}
2977 4447
2978inline_size void 4448inline_size ecb_cold
4449void
2979check_2625 (EV_P) 4450ev_check_2625 (EV_P)
2980{ 4451{
2981 /* kernels < 2.6.25 are borked 4452 /* kernels < 2.6.25 are borked
2982 * 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
2983 */ 4454 */
2984 struct utsname buf; 4455 if (ev_linux_version () < 0x020619)
2985 int major, minor, micro;
2986
2987 if (uname (&buf))
2988 return;
2989
2990 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2991 return;
2992
2993 if (major < 2
2994 || (major == 2 && minor < 6)
2995 || (major == 2 && minor == 6 && micro < 25))
2996 return; 4456 return;
2997 4457
2998 fs_2625 = 1; 4458 fs_2625 = 1;
2999} 4459}
3000 4460
3001inline_size int 4461inline_size int
3002infy_newfd (void) 4462infy_newfd (void)
3003{ 4463{
3004#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4464#if defined IN_CLOEXEC && defined IN_NONBLOCK
3005 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4465 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3006 if (fd >= 0) 4466 if (fd >= 0)
3007 return fd; 4467 return fd;
3008#endif 4468#endif
3009 return inotify_init (); 4469 return inotify_init ();
… …
3015 if (fs_fd != -2) 4475 if (fs_fd != -2)
3016 return; 4476 return;
3017 4477
3018 fs_fd = -1; 4478 fs_fd = -1;
3019 4479
3020 check_2625 (EV_A); 4480 ev_check_2625 (EV_A);
3021 4481
3022 fs_fd = infy_newfd (); 4482 fs_fd = infy_newfd ();
3023 4483
3024 if (fs_fd >= 0) 4484 if (fs_fd >= 0)
3025 { 4485 {
3026 fd_intern (fs_fd); 4486 fd_intern (fs_fd);
3027 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 4487 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
3028 ev_set_priority (&fs_w, EV_MAXPRI); 4488 ev_set_priority (&fs_w, EV_MAXPRI);
3029 ev_io_start (EV_A_ &fs_w); 4489 ev_io_start (EV_A_ &fs_w);
4490 ev_unref (EV_A);
3030 } 4491 }
3031} 4492}
3032 4493
3033inline_size void 4494inline_size void
3034infy_fork (EV_P) 4495infy_fork (EV_P)
… …
3036 int slot; 4497 int slot;
3037 4498
3038 if (fs_fd < 0) 4499 if (fs_fd < 0)
3039 return; 4500 return;
3040 4501
4502 ev_ref (EV_A);
3041 ev_io_stop (EV_A_ &fs_w); 4503 ev_io_stop (EV_A_ &fs_w);
3042 close (fs_fd); 4504 close (fs_fd);
3043 fs_fd = infy_newfd (); 4505 fs_fd = infy_newfd ();
3044 4506
3045 if (fs_fd >= 0) 4507 if (fs_fd >= 0)
3046 { 4508 {
3047 fd_intern (fs_fd); 4509 fd_intern (fs_fd);
3048 ev_io_set (&fs_w, fs_fd, EV_READ); 4510 ev_io_set (&fs_w, fs_fd, EV_READ);
3049 ev_io_start (EV_A_ &fs_w); 4511 ev_io_start (EV_A_ &fs_w);
4512 ev_unref (EV_A);
3050 } 4513 }
3051 4514
3052 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4515 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
3053 { 4516 {
3054 WL w_ = fs_hash [slot].head; 4517 WL w_ = fs_hash [slot].head;
3055 fs_hash [slot].head = 0; 4518 fs_hash [slot].head = 0;
3056 4519
3057 while (w_) 4520 while (w_)
… …
3062 w->wd = -1; 4525 w->wd = -1;
3063 4526
3064 if (fs_fd >= 0) 4527 if (fs_fd >= 0)
3065 infy_add (EV_A_ w); /* re-add, no matter what */ 4528 infy_add (EV_A_ w); /* re-add, no matter what */
3066 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);
3067 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 }
3068 } 4536 }
3069 } 4537 }
3070} 4538}
3071 4539
3072#endif 4540#endif
… …
3076#else 4544#else
3077# define EV_LSTAT(p,b) lstat (p, b) 4545# define EV_LSTAT(p,b) lstat (p, b)
3078#endif 4546#endif
3079 4547
3080void 4548void
3081ev_stat_stat (EV_P_ ev_stat *w) 4549ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
3082{ 4550{
3083 if (lstat (w->path, &w->attr) < 0) 4551 if (lstat (w->path, &w->attr) < 0)
3084 w->attr.st_nlink = 0; 4552 w->attr.st_nlink = 0;
3085 else if (!w->attr.st_nlink) 4553 else if (!w->attr.st_nlink)
3086 w->attr.st_nlink = 1; 4554 w->attr.st_nlink = 1;
3087} 4555}
3088 4556
3089static void noinline 4557ecb_noinline
4558static void
3090stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4559stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3091{ 4560{
3092 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4561 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3093 4562
3094 /* we copy this here each the time so that */ 4563 ev_statdata prev = w->attr;
3095 /* prev has the old value when the callback gets invoked */
3096 w->prev = w->attr;
3097 ev_stat_stat (EV_A_ w); 4564 ev_stat_stat (EV_A_ w);
3098 4565
3099 /* 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 */
3100 if ( 4567 if (
3101 w->prev.st_dev != w->attr.st_dev 4568 prev.st_dev != w->attr.st_dev
3102 || w->prev.st_ino != w->attr.st_ino 4569 || prev.st_ino != w->attr.st_ino
3103 || w->prev.st_mode != w->attr.st_mode 4570 || prev.st_mode != w->attr.st_mode
3104 || w->prev.st_nlink != w->attr.st_nlink 4571 || prev.st_nlink != w->attr.st_nlink
3105 || w->prev.st_uid != w->attr.st_uid 4572 || prev.st_uid != w->attr.st_uid
3106 || w->prev.st_gid != w->attr.st_gid 4573 || prev.st_gid != w->attr.st_gid
3107 || w->prev.st_rdev != w->attr.st_rdev 4574 || prev.st_rdev != w->attr.st_rdev
3108 || w->prev.st_size != w->attr.st_size 4575 || prev.st_size != w->attr.st_size
3109 || w->prev.st_atime != w->attr.st_atime 4576 || prev.st_atime != w->attr.st_atime
3110 || w->prev.st_mtime != w->attr.st_mtime 4577 || prev.st_mtime != w->attr.st_mtime
3111 || w->prev.st_ctime != w->attr.st_ctime 4578 || prev.st_ctime != w->attr.st_ctime
3112 ) { 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
3113 #if EV_USE_INOTIFY 4585 #if EV_USE_INOTIFY
3114 if (fs_fd >= 0) 4586 if (fs_fd >= 0)
3115 { 4587 {
3116 infy_del (EV_A_ w); 4588 infy_del (EV_A_ w);
3117 infy_add (EV_A_ w); 4589 infy_add (EV_A_ w);
… …
3122 ev_feed_event (EV_A_ w, EV_STAT); 4594 ev_feed_event (EV_A_ w, EV_STAT);
3123 } 4595 }
3124} 4596}
3125 4597
3126void 4598void
3127ev_stat_start (EV_P_ ev_stat *w) 4599ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
3128{ 4600{
3129 if (expect_false (ev_is_active (w))) 4601 if (ecb_expect_false (ev_is_active (w)))
3130 return; 4602 return;
3131 4603
3132 ev_stat_stat (EV_A_ w); 4604 ev_stat_stat (EV_A_ w);
3133 4605
3134 if (w->interval < MIN_STAT_INTERVAL && w->interval) 4606 if (w->interval < MIN_STAT_INTERVAL && w->interval)
… …
3142 4614
3143 if (fs_fd >= 0) 4615 if (fs_fd >= 0)
3144 infy_add (EV_A_ w); 4616 infy_add (EV_A_ w);
3145 else 4617 else
3146#endif 4618#endif
4619 {
3147 ev_timer_again (EV_A_ &w->timer); 4620 ev_timer_again (EV_A_ &w->timer);
4621 ev_unref (EV_A);
4622 }
3148 4623
3149 ev_start (EV_A_ (W)w, 1); 4624 ev_start (EV_A_ (W)w, 1);
3150 4625
3151 EV_FREQUENT_CHECK; 4626 EV_FREQUENT_CHECK;
3152} 4627}
3153 4628
3154void 4629void
3155ev_stat_stop (EV_P_ ev_stat *w) 4630ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
3156{ 4631{
3157 clear_pending (EV_A_ (W)w); 4632 clear_pending (EV_A_ (W)w);
3158 if (expect_false (!ev_is_active (w))) 4633 if (ecb_expect_false (!ev_is_active (w)))
3159 return; 4634 return;
3160 4635
3161 EV_FREQUENT_CHECK; 4636 EV_FREQUENT_CHECK;
3162 4637
3163#if EV_USE_INOTIFY 4638#if EV_USE_INOTIFY
3164 infy_del (EV_A_ w); 4639 infy_del (EV_A_ w);
3165#endif 4640#endif
4641
4642 if (ev_is_active (&w->timer))
4643 {
4644 ev_ref (EV_A);
3166 ev_timer_stop (EV_A_ &w->timer); 4645 ev_timer_stop (EV_A_ &w->timer);
4646 }
3167 4647
3168 ev_stop (EV_A_ (W)w); 4648 ev_stop (EV_A_ (W)w);
3169 4649
3170 EV_FREQUENT_CHECK; 4650 EV_FREQUENT_CHECK;
3171} 4651}
3172#endif 4652#endif
3173 4653
3174#if EV_IDLE_ENABLE 4654#if EV_IDLE_ENABLE
3175void 4655void
3176ev_idle_start (EV_P_ ev_idle *w) 4656ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
3177{ 4657{
3178 if (expect_false (ev_is_active (w))) 4658 if (ecb_expect_false (ev_is_active (w)))
3179 return; 4659 return;
3180 4660
3181 pri_adjust (EV_A_ (W)w); 4661 pri_adjust (EV_A_ (W)w);
3182 4662
3183 EV_FREQUENT_CHECK; 4663 EV_FREQUENT_CHECK;
… …
3186 int active = ++idlecnt [ABSPRI (w)]; 4666 int active = ++idlecnt [ABSPRI (w)];
3187 4667
3188 ++idleall; 4668 ++idleall;
3189 ev_start (EV_A_ (W)w, active); 4669 ev_start (EV_A_ (W)w, active);
3190 4670
3191 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);
3192 idles [ABSPRI (w)][active - 1] = w; 4672 idles [ABSPRI (w)][active - 1] = w;
3193 } 4673 }
3194 4674
3195 EV_FREQUENT_CHECK; 4675 EV_FREQUENT_CHECK;
3196} 4676}
3197 4677
3198void 4678void
3199ev_idle_stop (EV_P_ ev_idle *w) 4679ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
3200{ 4680{
3201 clear_pending (EV_A_ (W)w); 4681 clear_pending (EV_A_ (W)w);
3202 if (expect_false (!ev_is_active (w))) 4682 if (ecb_expect_false (!ev_is_active (w)))
3203 return; 4683 return;
3204 4684
3205 EV_FREQUENT_CHECK; 4685 EV_FREQUENT_CHECK;
3206 4686
3207 { 4687 {
… …
3216 4696
3217 EV_FREQUENT_CHECK; 4697 EV_FREQUENT_CHECK;
3218} 4698}
3219#endif 4699#endif
3220 4700
4701#if EV_PREPARE_ENABLE
3221void 4702void
3222ev_prepare_start (EV_P_ ev_prepare *w) 4703ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
3223{ 4704{
3224 if (expect_false (ev_is_active (w))) 4705 if (ecb_expect_false (ev_is_active (w)))
3225 return; 4706 return;
3226 4707
3227 EV_FREQUENT_CHECK; 4708 EV_FREQUENT_CHECK;
3228 4709
3229 ev_start (EV_A_ (W)w, ++preparecnt); 4710 ev_start (EV_A_ (W)w, ++preparecnt);
3230 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4711 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
3231 prepares [preparecnt - 1] = w; 4712 prepares [preparecnt - 1] = w;
3232 4713
3233 EV_FREQUENT_CHECK; 4714 EV_FREQUENT_CHECK;
3234} 4715}
3235 4716
3236void 4717void
3237ev_prepare_stop (EV_P_ ev_prepare *w) 4718ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
3238{ 4719{
3239 clear_pending (EV_A_ (W)w); 4720 clear_pending (EV_A_ (W)w);
3240 if (expect_false (!ev_is_active (w))) 4721 if (ecb_expect_false (!ev_is_active (w)))
3241 return; 4722 return;
3242 4723
3243 EV_FREQUENT_CHECK; 4724 EV_FREQUENT_CHECK;
3244 4725
3245 { 4726 {
… …
3251 4732
3252 ev_stop (EV_A_ (W)w); 4733 ev_stop (EV_A_ (W)w);
3253 4734
3254 EV_FREQUENT_CHECK; 4735 EV_FREQUENT_CHECK;
3255} 4736}
4737#endif
3256 4738
4739#if EV_CHECK_ENABLE
3257void 4740void
3258ev_check_start (EV_P_ ev_check *w) 4741ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
3259{ 4742{
3260 if (expect_false (ev_is_active (w))) 4743 if (ecb_expect_false (ev_is_active (w)))
3261 return; 4744 return;
3262 4745
3263 EV_FREQUENT_CHECK; 4746 EV_FREQUENT_CHECK;
3264 4747
3265 ev_start (EV_A_ (W)w, ++checkcnt); 4748 ev_start (EV_A_ (W)w, ++checkcnt);
3266 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 4749 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
3267 checks [checkcnt - 1] = w; 4750 checks [checkcnt - 1] = w;
3268 4751
3269 EV_FREQUENT_CHECK; 4752 EV_FREQUENT_CHECK;
3270} 4753}
3271 4754
3272void 4755void
3273ev_check_stop (EV_P_ ev_check *w) 4756ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
3274{ 4757{
3275 clear_pending (EV_A_ (W)w); 4758 clear_pending (EV_A_ (W)w);
3276 if (expect_false (!ev_is_active (w))) 4759 if (ecb_expect_false (!ev_is_active (w)))
3277 return; 4760 return;
3278 4761
3279 EV_FREQUENT_CHECK; 4762 EV_FREQUENT_CHECK;
3280 4763
3281 { 4764 {
… …
3287 4770
3288 ev_stop (EV_A_ (W)w); 4771 ev_stop (EV_A_ (W)w);
3289 4772
3290 EV_FREQUENT_CHECK; 4773 EV_FREQUENT_CHECK;
3291} 4774}
4775#endif
3292 4776
3293#if EV_EMBED_ENABLE 4777#if EV_EMBED_ENABLE
3294void noinline 4778ecb_noinline
4779void
3295ev_embed_sweep (EV_P_ ev_embed *w) 4780ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
3296{ 4781{
3297 ev_loop (w->other, EVLOOP_NONBLOCK); 4782 ev_run (w->other, EVRUN_NOWAIT);
3298} 4783}
3299 4784
3300static void 4785static void
3301embed_io_cb (EV_P_ ev_io *io, int revents) 4786embed_io_cb (EV_P_ ev_io *io, int revents)
3302{ 4787{
3303 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4788 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3304 4789
3305 if (ev_cb (w)) 4790 if (ev_cb (w))
3306 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4791 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3307 else 4792 else
3308 ev_loop (w->other, EVLOOP_NONBLOCK); 4793 ev_run (w->other, EVRUN_NOWAIT);
3309} 4794}
3310 4795
3311static void 4796static void
3312embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4797embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3313{ 4798{
… …
3317 EV_P = w->other; 4802 EV_P = w->other;
3318 4803
3319 while (fdchangecnt) 4804 while (fdchangecnt)
3320 { 4805 {
3321 fd_reify (EV_A); 4806 fd_reify (EV_A);
3322 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4807 ev_run (EV_A_ EVRUN_NOWAIT);
3323 } 4808 }
3324 } 4809 }
3325} 4810}
3326 4811
3327static void 4812static void
… …
3333 4818
3334 { 4819 {
3335 EV_P = w->other; 4820 EV_P = w->other;
3336 4821
3337 ev_loop_fork (EV_A); 4822 ev_loop_fork (EV_A);
3338 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4823 ev_run (EV_A_ EVRUN_NOWAIT);
3339 } 4824 }
3340 4825
3341 ev_embed_start (EV_A_ w); 4826 ev_embed_start (EV_A_ w);
3342} 4827}
3343 4828
… …
3348 ev_idle_stop (EV_A_ idle); 4833 ev_idle_stop (EV_A_ idle);
3349} 4834}
3350#endif 4835#endif
3351 4836
3352void 4837void
3353ev_embed_start (EV_P_ ev_embed *w) 4838ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
3354{ 4839{
3355 if (expect_false (ev_is_active (w))) 4840 if (ecb_expect_false (ev_is_active (w)))
3356 return; 4841 return;
3357 4842
3358 { 4843 {
3359 EV_P = w->other; 4844 EV_P = w->other;
3360 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 ()));
… …
3379 4864
3380 EV_FREQUENT_CHECK; 4865 EV_FREQUENT_CHECK;
3381} 4866}
3382 4867
3383void 4868void
3384ev_embed_stop (EV_P_ ev_embed *w) 4869ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
3385{ 4870{
3386 clear_pending (EV_A_ (W)w); 4871 clear_pending (EV_A_ (W)w);
3387 if (expect_false (!ev_is_active (w))) 4872 if (ecb_expect_false (!ev_is_active (w)))
3388 return; 4873 return;
3389 4874
3390 EV_FREQUENT_CHECK; 4875 EV_FREQUENT_CHECK;
3391 4876
3392 ev_io_stop (EV_A_ &w->io); 4877 ev_io_stop (EV_A_ &w->io);
3393 ev_prepare_stop (EV_A_ &w->prepare); 4878 ev_prepare_stop (EV_A_ &w->prepare);
3394 ev_fork_stop (EV_A_ &w->fork); 4879 ev_fork_stop (EV_A_ &w->fork);
3395 4880
4881 ev_stop (EV_A_ (W)w);
4882
3396 EV_FREQUENT_CHECK; 4883 EV_FREQUENT_CHECK;
3397} 4884}
3398#endif 4885#endif
3399 4886
3400#if EV_FORK_ENABLE 4887#if EV_FORK_ENABLE
3401void 4888void
3402ev_fork_start (EV_P_ ev_fork *w) 4889ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
3403{ 4890{
3404 if (expect_false (ev_is_active (w))) 4891 if (ecb_expect_false (ev_is_active (w)))
3405 return; 4892 return;
3406 4893
3407 EV_FREQUENT_CHECK; 4894 EV_FREQUENT_CHECK;
3408 4895
3409 ev_start (EV_A_ (W)w, ++forkcnt); 4896 ev_start (EV_A_ (W)w, ++forkcnt);
3410 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 4897 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
3411 forks [forkcnt - 1] = w; 4898 forks [forkcnt - 1] = w;
3412 4899
3413 EV_FREQUENT_CHECK; 4900 EV_FREQUENT_CHECK;
3414} 4901}
3415 4902
3416void 4903void
3417ev_fork_stop (EV_P_ ev_fork *w) 4904ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
3418{ 4905{
3419 clear_pending (EV_A_ (W)w); 4906 clear_pending (EV_A_ (W)w);
3420 if (expect_false (!ev_is_active (w))) 4907 if (ecb_expect_false (!ev_is_active (w)))
3421 return; 4908 return;
3422 4909
3423 EV_FREQUENT_CHECK; 4910 EV_FREQUENT_CHECK;
3424 4911
3425 { 4912 {
… …
3433 4920
3434 EV_FREQUENT_CHECK; 4921 EV_FREQUENT_CHECK;
3435} 4922}
3436#endif 4923#endif
3437 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
3438#if EV_ASYNC_ENABLE 4966#if EV_ASYNC_ENABLE
3439void 4967void
3440ev_async_start (EV_P_ ev_async *w) 4968ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
3441{ 4969{
3442 if (expect_false (ev_is_active (w))) 4970 if (ecb_expect_false (ev_is_active (w)))
3443 return; 4971 return;
3444 4972
4973 w->sent = 0;
4974
3445 evpipe_init (EV_A); 4975 evpipe_init (EV_A);
3446 4976
3447 EV_FREQUENT_CHECK; 4977 EV_FREQUENT_CHECK;
3448 4978
3449 ev_start (EV_A_ (W)w, ++asynccnt); 4979 ev_start (EV_A_ (W)w, ++asynccnt);
3450 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 4980 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
3451 asyncs [asynccnt - 1] = w; 4981 asyncs [asynccnt - 1] = w;
3452 4982
3453 EV_FREQUENT_CHECK; 4983 EV_FREQUENT_CHECK;
3454} 4984}
3455 4985
3456void 4986void
3457ev_async_stop (EV_P_ ev_async *w) 4987ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
3458{ 4988{
3459 clear_pending (EV_A_ (W)w); 4989 clear_pending (EV_A_ (W)w);
3460 if (expect_false (!ev_is_active (w))) 4990 if (ecb_expect_false (!ev_is_active (w)))
3461 return; 4991 return;
3462 4992
3463 EV_FREQUENT_CHECK; 4993 EV_FREQUENT_CHECK;
3464 4994
3465 { 4995 {
… …
3473 5003
3474 EV_FREQUENT_CHECK; 5004 EV_FREQUENT_CHECK;
3475} 5005}
3476 5006
3477void 5007void
3478ev_async_send (EV_P_ ev_async *w) 5008ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
3479{ 5009{
3480 w->sent = 1; 5010 w->sent = 1;
3481 evpipe_write (EV_A_ &async_pending); 5011 evpipe_write (EV_A_ &async_pending);
3482} 5012}
3483#endif 5013#endif
… …
3520 5050
3521 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));
3522} 5052}
3523 5053
3524void 5054void
3525ev_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
3526{ 5056{
3527 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));
3528
3529 if (expect_false (!once))
3530 {
3531 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
3532 return;
3533 }
3534 5058
3535 once->cb = cb; 5059 once->cb = cb;
3536 once->arg = arg; 5060 once->arg = arg;
3537 5061
3538 ev_init (&once->io, once_cb_io); 5062 ev_init (&once->io, once_cb_io);
… …
3551} 5075}
3552 5076
3553/*****************************************************************************/ 5077/*****************************************************************************/
3554 5078
3555#if EV_WALK_ENABLE 5079#if EV_WALK_ENABLE
5080ecb_cold
3556void 5081void
3557ev_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
3558{ 5083{
3559 int i, j; 5084 int i, j;
3560 ev_watcher_list *wl, *wn; 5085 ev_watcher_list *wl, *wn;
3561 5086
3562 if (types & (EV_IO | EV_EMBED)) 5087 if (types & (EV_IO | EV_EMBED))
… …
3605 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 5130 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3606#endif 5131#endif
3607 5132
3608#if EV_IDLE_ENABLE 5133#if EV_IDLE_ENABLE
3609 if (types & EV_IDLE) 5134 if (types & EV_IDLE)
3610 for (j = NUMPRI; i--; ) 5135 for (j = NUMPRI; j--; )
3611 for (i = idlecnt [j]; i--; ) 5136 for (i = idlecnt [j]; i--; )
3612 cb (EV_A_ EV_IDLE, idles [j][i]); 5137 cb (EV_A_ EV_IDLE, idles [j][i]);
3613#endif 5138#endif
3614 5139
3615#if EV_FORK_ENABLE 5140#if EV_FORK_ENABLE
… …
3623 if (types & EV_ASYNC) 5148 if (types & EV_ASYNC)
3624 for (i = asynccnt; i--; ) 5149 for (i = asynccnt; i--; )
3625 cb (EV_A_ EV_ASYNC, asyncs [i]); 5150 cb (EV_A_ EV_ASYNC, asyncs [i]);
3626#endif 5151#endif
3627 5152
5153#if EV_PREPARE_ENABLE
3628 if (types & EV_PREPARE) 5154 if (types & EV_PREPARE)
3629 for (i = preparecnt; i--; ) 5155 for (i = preparecnt; i--; )
3630#if EV_EMBED_ENABLE 5156# if EV_EMBED_ENABLE
3631 if (ev_cb (prepares [i]) != embed_prepare_cb) 5157 if (ev_cb (prepares [i]) != embed_prepare_cb)
3632#endif 5158# endif
3633 cb (EV_A_ EV_PREPARE, prepares [i]); 5159 cb (EV_A_ EV_PREPARE, prepares [i]);
5160#endif
3634 5161
5162#if EV_CHECK_ENABLE
3635 if (types & EV_CHECK) 5163 if (types & EV_CHECK)
3636 for (i = checkcnt; i--; ) 5164 for (i = checkcnt; i--; )
3637 cb (EV_A_ EV_CHECK, checks [i]); 5165 cb (EV_A_ EV_CHECK, checks [i]);
5166#endif
3638 5167
5168#if EV_SIGNAL_ENABLE
3639 if (types & EV_SIGNAL) 5169 if (types & EV_SIGNAL)
3640 for (i = 0; i < EV_NSIG - 1; ++i) 5170 for (i = 0; i < EV_NSIG - 1; ++i)
3641 for (wl = signals [i].head; wl; ) 5171 for (wl = signals [i].head; wl; )
3642 { 5172 {
3643 wn = wl->next; 5173 wn = wl->next;
3644 cb (EV_A_ EV_SIGNAL, wl); 5174 cb (EV_A_ EV_SIGNAL, wl);
3645 wl = wn; 5175 wl = wn;
3646 } 5176 }
5177#endif
3647 5178
5179#if EV_CHILD_ENABLE
3648 if (types & EV_CHILD) 5180 if (types & EV_CHILD)
3649 for (i = EV_PID_HASHSIZE; i--; ) 5181 for (i = (EV_PID_HASHSIZE); i--; )
3650 for (wl = childs [i]; wl; ) 5182 for (wl = childs [i]; wl; )
3651 { 5183 {
3652 wn = wl->next; 5184 wn = wl->next;
3653 cb (EV_A_ EV_CHILD, wl); 5185 cb (EV_A_ EV_CHILD, wl);
3654 wl = wn; 5186 wl = wn;
3655 } 5187 }
5188#endif
3656/* EV_STAT 0x00001000 /* stat data changed */ 5189/* EV_STAT 0x00001000 /* stat data changed */
3657/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 5190/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3658} 5191}
3659#endif 5192#endif
3660 5193
3661#if EV_MULTIPLICITY 5194#if EV_MULTIPLICITY
3662 #include "ev_wrap.h" 5195 #include "ev_wrap.h"
3663#endif 5196#endif
3664 5197
3665#ifdef __cplusplus
3666}
3667#endif
3668

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