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Comparing libev/ev.c (file contents):
Revision 1.305 by root, Sun Jul 19 03:49:04 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 */
215# define EV_NSIG 64
216#endif 258#endif
217 259
218/* Default to some arbitrary number that's big enough to get most 260#ifndef EV_USE_FLOOR
219 of the common signals. 261# define EV_USE_FLOOR 0
220*/
221#ifndef NSIG
222# define NSIG 50
223#endif 262#endif
224/* <-- NSIG logic from Configure */ 263
225#ifndef EV_USE_CLOCK_SYSCALL 264#ifndef EV_USE_CLOCK_SYSCALL
226# if __linux && __GLIBC__ >= 2 265# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
227# define EV_USE_CLOCK_SYSCALL 1 266# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
228# else 267# else
229# define EV_USE_CLOCK_SYSCALL 0 268# define EV_USE_CLOCK_SYSCALL 0
230# endif 269# endif
231#endif 270#endif
232 271
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
233#ifndef EV_USE_MONOTONIC 281#ifndef EV_USE_MONOTONIC
234# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 282# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
235# define EV_USE_MONOTONIC 1 283# define EV_USE_MONOTONIC EV_FEATURE_OS
236# else 284# else
237# define EV_USE_MONOTONIC 0 285# define EV_USE_MONOTONIC 0
238# endif 286# endif
239#endif 287#endif
240 288
… …
242# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 290# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
243#endif 291#endif
244 292
245#ifndef EV_USE_NANOSLEEP 293#ifndef EV_USE_NANOSLEEP
246# if _POSIX_C_SOURCE >= 199309L 294# if _POSIX_C_SOURCE >= 199309L
247# define EV_USE_NANOSLEEP 1 295# define EV_USE_NANOSLEEP EV_FEATURE_OS
248# else 296# else
249# define EV_USE_NANOSLEEP 0 297# define EV_USE_NANOSLEEP 0
250# endif 298# endif
251#endif 299#endif
252 300
253#ifndef EV_USE_SELECT 301#ifndef EV_USE_SELECT
254# define EV_USE_SELECT 1 302# define EV_USE_SELECT EV_FEATURE_BACKENDS
255#endif 303#endif
256 304
257#ifndef EV_USE_POLL 305#ifndef EV_USE_POLL
258# ifdef _WIN32 306# ifdef _WIN32
259# define EV_USE_POLL 0 307# define EV_USE_POLL 0
260# else 308# else
261# define EV_USE_POLL 1 309# define EV_USE_POLL EV_FEATURE_BACKENDS
262# endif 310# endif
263#endif 311#endif
264 312
265#ifndef EV_USE_EPOLL 313#ifndef EV_USE_EPOLL
266# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 314# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
267# define EV_USE_EPOLL 1 315# define EV_USE_EPOLL EV_FEATURE_BACKENDS
268# else 316# else
269# define EV_USE_EPOLL 0 317# define EV_USE_EPOLL 0
270# endif 318# endif
271#endif 319#endif
272 320
… …
276 324
277#ifndef EV_USE_PORT 325#ifndef EV_USE_PORT
278# define EV_USE_PORT 0 326# define EV_USE_PORT 0
279#endif 327#endif
280 328
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
281#ifndef EV_USE_INOTIFY 337#ifndef EV_USE_INOTIFY
282# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 338# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
283# define EV_USE_INOTIFY 1 339# define EV_USE_INOTIFY EV_FEATURE_OS
284# else 340# else
285# define EV_USE_INOTIFY 0 341# define EV_USE_INOTIFY 0
286# endif 342# endif
287#endif 343#endif
288 344
289#ifndef EV_PID_HASHSIZE 345#ifndef EV_PID_HASHSIZE
290# if EV_MINIMAL 346# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
291# define EV_PID_HASHSIZE 1
292# else
293# define EV_PID_HASHSIZE 16
294# endif
295#endif 347#endif
296 348
297#ifndef EV_INOTIFY_HASHSIZE 349#ifndef EV_INOTIFY_HASHSIZE
298# if EV_MINIMAL 350# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
299# define EV_INOTIFY_HASHSIZE 1
300# else
301# define EV_INOTIFY_HASHSIZE 16
302# endif
303#endif 351#endif
304 352
305#ifndef EV_USE_EVENTFD 353#ifndef EV_USE_EVENTFD
306# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 354# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
307# define EV_USE_EVENTFD 1 355# define EV_USE_EVENTFD EV_FEATURE_OS
308# else 356# else
309# define EV_USE_EVENTFD 0 357# define EV_USE_EVENTFD 0
310# endif 358# endif
311#endif 359#endif
312 360
313#ifndef EV_USE_SIGNALFD 361#ifndef EV_USE_SIGNALFD
314# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 9)) 362# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
315# define EV_USE_SIGNALFD 1 363# define EV_USE_SIGNALFD EV_FEATURE_OS
316# else 364# else
317# define EV_USE_SIGNALFD 0 365# define EV_USE_SIGNALFD 0
318# endif 366# endif
319#endif 367#endif
320 368
… …
323# define EV_USE_4HEAP 1 371# define EV_USE_4HEAP 1
324# define EV_HEAP_CACHE_AT 1 372# define EV_HEAP_CACHE_AT 1
325#endif 373#endif
326 374
327#ifndef EV_VERIFY 375#ifndef EV_VERIFY
328# define EV_VERIFY !EV_MINIMAL 376# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
329#endif 377#endif
330 378
331#ifndef EV_USE_4HEAP 379#ifndef EV_USE_4HEAP
332# define EV_USE_4HEAP !EV_MINIMAL 380# define EV_USE_4HEAP EV_FEATURE_DATA
333#endif 381#endif
334 382
335#ifndef EV_HEAP_CACHE_AT 383#ifndef EV_HEAP_CACHE_AT
336# 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
337#endif 401#endif
338 402
339/* 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, */
340/* which makes programs even slower. might work on other unices, too. */ 404/* which makes programs even slower. might work on other unices, too. */
341#if EV_USE_CLOCK_SYSCALL 405#if EV_USE_CLOCK_SYSCALL
342# include <syscall.h> 406# include <sys/syscall.h>
343# ifdef SYS_clock_gettime 407# ifdef SYS_clock_gettime
344# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 408# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
345# undef EV_USE_MONOTONIC 409# undef EV_USE_MONOTONIC
346# define EV_USE_MONOTONIC 1 410# define EV_USE_MONOTONIC 1
347# else 411# else
… …
366# undef EV_USE_INOTIFY 430# undef EV_USE_INOTIFY
367# define EV_USE_INOTIFY 0 431# define EV_USE_INOTIFY 0
368#endif 432#endif
369 433
370#if !EV_USE_NANOSLEEP 434#if !EV_USE_NANOSLEEP
371# ifndef _WIN32 435/* hp-ux has it in sys/time.h, which we unconditionally include above */
436# if !defined _WIN32 && !defined __hpux
372# include <sys/select.h> 437# include <sys/select.h>
373# endif 438# endif
374#endif 439#endif
375 440
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
376#if EV_USE_INOTIFY 449#if EV_USE_INOTIFY
377# include <sys/utsname.h>
378# include <sys/statfs.h> 450# include <sys/statfs.h>
379# include <sys/inotify.h> 451# include <sys/inotify.h>
380/* 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 */
381# ifndef IN_DONT_FOLLOW 453# ifndef IN_DONT_FOLLOW
382# undef EV_USE_INOTIFY 454# undef EV_USE_INOTIFY
383# define EV_USE_INOTIFY 0 455# define EV_USE_INOTIFY 0
384# endif 456# endif
385#endif 457#endif
386 458
387#if EV_SELECT_IS_WINSOCKET
388# include <winsock.h>
389#endif
390
391#if EV_USE_EVENTFD 459#if EV_USE_EVENTFD
392/* 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 */
393# include <stdint.h> 461# include <stdint.h>
394# ifndef EFD_NONBLOCK 462# ifndef EFD_NONBLOCK
395# define EFD_NONBLOCK O_NONBLOCK 463# define EFD_NONBLOCK O_NONBLOCK
396# endif 464# endif
397# ifndef EFD_CLOEXEC 465# ifndef EFD_CLOEXEC
466# ifdef O_CLOEXEC
398# define EFD_CLOEXEC O_CLOEXEC 467# define EFD_CLOEXEC O_CLOEXEC
468# else
469# define EFD_CLOEXEC 02000000
470# endif
399# endif 471# endif
400# ifdef __cplusplus 472EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
401extern "C" { 473#endif
474
475#if EV_USE_SIGNALFD
476/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
477# include <stdint.h>
478# ifndef SFD_NONBLOCK
479# define SFD_NONBLOCK O_NONBLOCK
402# endif 480# endif
403int eventfd (unsigned int initval, int flags); 481# ifndef SFD_CLOEXEC
404# ifdef __cplusplus 482# ifdef O_CLOEXEC
405} 483# define SFD_CLOEXEC O_CLOEXEC
484# else
485# define SFD_CLOEXEC 02000000
486# endif
406# endif 487# endif
407#endif 488EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
408 489
409#if EV_USE_SIGNALFD 490struct signalfd_siginfo
410# include <sys/signalfd.h> 491{
492 uint32_t ssi_signo;
493 char pad[128 - sizeof (uint32_t)];
494};
411#endif 495#endif
412 496
413/**/ 497/**/
414 498
415#if EV_VERIFY >= 3 499#if EV_VERIFY >= 3
416# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 500# define EV_FREQUENT_CHECK ev_verify (EV_A)
417#else 501#else
418# define EV_FREQUENT_CHECK do { } while (0) 502# define EV_FREQUENT_CHECK do { } while (0)
419#endif 503#endif
420 504
421/* 505/*
422 * This is used to avoid floating point rounding problems. 506 * This is used to work around floating point rounding problems.
423 * It is added to ev_rt_now when scheduling periodics
424 * to ensure progress, time-wise, even when rounding
425 * errors are against us.
426 * This value is good at least till the year 4000. 507 * This value is good at least till the year 4000.
427 * Better solutions welcome.
428 */ 508 */
429#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 */
430 511
431#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) */
432#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) */
433/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
434 514
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;
435#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)
436# define expect(expr,value) __builtin_expect ((expr),(value)) 872 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
437# define noinline __attribute__ ((noinline))
438#else 873#else
439# define expect(expr,value) (expr) 874 #define ecb_expect(expr,value) (expr)
440# define noinline
441# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
442# define inline
443# endif 875#endif
444#endif
445 876
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. */
446#define expect_false(expr) expect ((expr) != 0, 0) 941#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
447#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
448#define inline_size static inline 1555#define inline_size ecb_inline
449 1556
450#if EV_MINIMAL 1557#if EV_FEATURE_CODE
451# define inline_speed static noinline
452#else
453# define inline_speed static inline 1558# define inline_speed ecb_inline
1559#else
1560# define inline_speed ecb_noinline static
454#endif 1561#endif
455 1562
456#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1563#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
457 1564
458#if EV_MINPRI == EV_MAXPRI 1565#if EV_MINPRI == EV_MAXPRI
459# define ABSPRI(w) (((W)w), 0) 1566# define ABSPRI(w) (((W)w), 0)
460#else 1567#else
461# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1568# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
462#endif 1569#endif
463 1570
464#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1571#define EMPTY /* required for microsofts broken pseudo-c compiler */
465#define EMPTY2(a,b) /* used to suppress some warnings */
466 1572
467typedef ev_watcher *W; 1573typedef ev_watcher *W;
468typedef ev_watcher_list *WL; 1574typedef ev_watcher_list *WL;
469typedef ev_watcher_time *WT; 1575typedef ev_watcher_time *WT;
470 1576
471#define ev_active(w) ((W)(w))->active 1577#define ev_active(w) ((W)(w))->active
472#define ev_at(w) ((WT)(w))->at 1578#define ev_at(w) ((WT)(w))->at
473 1579
474#if EV_USE_REALTIME 1580#if EV_USE_REALTIME
475/* 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 */
476/* giving it a reasonably high chance of working on typical architetcures */ 1582/* giving it a reasonably high chance of working on typical architectures */
477static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 1583static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
478#endif 1584#endif
479 1585
480#if EV_USE_MONOTONIC 1586#if EV_USE_MONOTONIC
481static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 1587static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
482#endif 1588#endif
483 1589
1590#ifndef EV_FD_TO_WIN32_HANDLE
1591# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
1592#endif
1593#ifndef EV_WIN32_HANDLE_TO_FD
1594# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
1595#endif
1596#ifndef EV_WIN32_CLOSE_FD
1597# define EV_WIN32_CLOSE_FD(fd) close (fd)
1598#endif
1599
484#ifdef _WIN32 1600#ifdef _WIN32
485# include "ev_win32.c" 1601# include "ev_win32.c"
486#endif 1602#endif
487 1603
488/*****************************************************************************/ 1604/*****************************************************************************/
489 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
490static void (*syserr_cb)(const char *msg); 1711static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
491 1712
1713ecb_cold
492void 1714void
493ev_set_syserr_cb (void (*cb)(const char *msg)) 1715ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
494{ 1716{
495 syserr_cb = cb; 1717 syserr_cb = cb;
496} 1718}
497 1719
498static void noinline 1720ecb_noinline ecb_cold
1721static void
499ev_syserr (const char *msg) 1722ev_syserr (const char *msg)
500{ 1723{
501 if (!msg) 1724 if (!msg)
502 msg = "(libev) system error"; 1725 msg = "(libev) system error";
503 1726
504 if (syserr_cb) 1727 if (syserr_cb)
505 syserr_cb (msg); 1728 syserr_cb (msg);
506 else 1729 else
507 { 1730 {
1731#if EV_AVOID_STDIO
1732 ev_printerr (msg);
1733 ev_printerr (": ");
1734 ev_printerr (strerror (errno));
1735 ev_printerr ("\n");
1736#else
508 perror (msg); 1737 perror (msg);
1738#endif
509 abort (); 1739 abort ();
510 } 1740 }
511} 1741}
512 1742
513static void * 1743static void *
514ev_realloc_emul (void *ptr, long size) 1744ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
515{ 1745{
516 /* some systems, notably openbsd and darwin, fail to properly 1746 /* some systems, notably openbsd and darwin, fail to properly
517 * 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
518 * 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.
519 */ 1751 */
520 1752
521 if (size) 1753 if (size)
522 return realloc (ptr, size); 1754 return realloc (ptr, size);
523 1755
524 free (ptr); 1756 free (ptr);
525 return 0; 1757 return 0;
526} 1758}
527 1759
528static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1760static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
529 1761
1762ecb_cold
530void 1763void
531ev_set_allocator (void *(*cb)(void *ptr, long size)) 1764ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
532{ 1765{
533 alloc = cb; 1766 alloc = cb;
534} 1767}
535 1768
536inline_speed void * 1769inline_speed void *
… …
538{ 1771{
539 ptr = alloc (ptr, size); 1772 ptr = alloc (ptr, size);
540 1773
541 if (!ptr && size) 1774 if (!ptr && size)
542 { 1775 {
1776#if EV_AVOID_STDIO
1777 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1778#else
543 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1779 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1780#endif
544 abort (); 1781 abort ();
545 } 1782 }
546 1783
547 return ptr; 1784 return ptr;
548} 1785}
… …
559typedef struct 1796typedef struct
560{ 1797{
561 WL head; 1798 WL head;
562 unsigned char events; /* the events watched for */ 1799 unsigned char events; /* the events watched for */
563 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) */
564 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 */
565 unsigned char unused; 1802 unsigned char unused;
566#if EV_USE_EPOLL 1803#if EV_USE_EPOLL
567 unsigned int egen; /* generation counter to counter epoll bugs */ 1804 unsigned int egen; /* generation counter to counter epoll bugs */
568#endif 1805#endif
569#if EV_SELECT_IS_WINSOCKET 1806#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
570 SOCKET handle; 1807 SOCKET handle;
1808#endif
1809#if EV_USE_IOCP
1810 OVERLAPPED or, ow;
571#endif 1811#endif
572} ANFD; 1812} ANFD;
573 1813
574/* stores the pending event set for a given watcher */ 1814/* stores the pending event set for a given watcher */
575typedef struct 1815typedef struct
… …
617 #undef VAR 1857 #undef VAR
618 }; 1858 };
619 #include "ev_wrap.h" 1859 #include "ev_wrap.h"
620 1860
621 static struct ev_loop default_loop_struct; 1861 static struct ev_loop default_loop_struct;
622 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 */
623 1863
624#else 1864#else
625 1865
626 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 */
627 #define VAR(name,decl) static decl; 1867 #define VAR(name,decl) static decl;
628 #include "ev_vars.h" 1868 #include "ev_vars.h"
629 #undef VAR 1869 #undef VAR
630 1870
631 static int ev_default_loop_ptr; 1871 static int ev_default_loop_ptr;
632 1872
633#endif 1873#endif
634 1874
635#if EV_MINIMAL < 2 1875#if EV_FEATURE_API
636# 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)
637# 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)
638# define EV_INVOKE_PENDING invoke_cb (EV_A) 1878# define EV_INVOKE_PENDING invoke_cb (EV_A)
639#else 1879#else
640# define EV_RELEASE_CB (void)0 1880# define EV_RELEASE_CB (void)0
641# define EV_ACQUIRE_CB (void)0 1881# define EV_ACQUIRE_CB (void)0
642# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1882# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
643#endif 1883#endif
644 1884
645#define EVUNLOOP_RECURSE 0x80 1885#define EVBREAK_RECURSE 0x80
646 1886
647/*****************************************************************************/ 1887/*****************************************************************************/
648 1888
649#ifndef EV_HAVE_EV_TIME 1889#ifndef EV_HAVE_EV_TIME
650ev_tstamp 1890ev_tstamp
651ev_time (void) 1891ev_time (void) EV_NOEXCEPT
652{ 1892{
653#if EV_USE_REALTIME 1893#if EV_USE_REALTIME
654 if (expect_true (have_realtime)) 1894 if (ecb_expect_true (have_realtime))
655 { 1895 {
656 struct timespec ts; 1896 struct timespec ts;
657 clock_gettime (CLOCK_REALTIME, &ts); 1897 clock_gettime (CLOCK_REALTIME, &ts);
658 return ts.tv_sec + ts.tv_nsec * 1e-9; 1898 return ts.tv_sec + ts.tv_nsec * 1e-9;
659 } 1899 }
… …
667 1907
668inline_size ev_tstamp 1908inline_size ev_tstamp
669get_clock (void) 1909get_clock (void)
670{ 1910{
671#if EV_USE_MONOTONIC 1911#if EV_USE_MONOTONIC
672 if (expect_true (have_monotonic)) 1912 if (ecb_expect_true (have_monotonic))
673 { 1913 {
674 struct timespec ts; 1914 struct timespec ts;
675 clock_gettime (CLOCK_MONOTONIC, &ts); 1915 clock_gettime (CLOCK_MONOTONIC, &ts);
676 return ts.tv_sec + ts.tv_nsec * 1e-9; 1916 return ts.tv_sec + ts.tv_nsec * 1e-9;
677 } 1917 }
… …
680 return ev_time (); 1920 return ev_time ();
681} 1921}
682 1922
683#if EV_MULTIPLICITY 1923#if EV_MULTIPLICITY
684ev_tstamp 1924ev_tstamp
685ev_now (EV_P) 1925ev_now (EV_P) EV_NOEXCEPT
686{ 1926{
687 return ev_rt_now; 1927 return ev_rt_now;
688} 1928}
689#endif 1929#endif
690 1930
691void 1931void
692ev_sleep (ev_tstamp delay) 1932ev_sleep (ev_tstamp delay) EV_NOEXCEPT
693{ 1933{
694 if (delay > 0.) 1934 if (delay > 0.)
695 { 1935 {
696#if EV_USE_NANOSLEEP 1936#if EV_USE_NANOSLEEP
697 struct timespec ts; 1937 struct timespec ts;
698 1938
699 ts.tv_sec = (time_t)delay; 1939 EV_TS_SET (ts, delay);
700 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
701
702 nanosleep (&ts, 0); 1940 nanosleep (&ts, 0);
703#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) */
704 Sleep ((unsigned long)(delay * 1e3)); 1944 Sleep ((unsigned long)(delay * 1e3));
705#else 1945#else
706 struct timeval tv; 1946 struct timeval tv;
707
708 tv.tv_sec = (time_t)delay;
709 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
710 1947
711 /* 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 */
712 /* something not guaranteed by newer posix versions, but guaranteed */ 1949 /* something not guaranteed by newer posix versions, but guaranteed */
713 /* by older ones */ 1950 /* by older ones */
1951 EV_TV_SET (tv, delay);
714 select (0, 0, 0, 0, &tv); 1952 select (0, 0, 0, 0, &tv);
715#endif 1953#endif
716 } 1954 }
717} 1955}
718 1956
719/*****************************************************************************/ 1957/*****************************************************************************/
720 1958
721#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 */
722 1960
723/* find a suitable new size for the given array, */ 1961/* find a suitable new size for the given array, */
724/* hopefully by rounding to a ncie-to-malloc size */ 1962/* hopefully by rounding to a nice-to-malloc size */
725inline_size int 1963inline_size int
726array_nextsize (int elem, int cur, int cnt) 1964array_nextsize (int elem, int cur, int cnt)
727{ 1965{
728 int ncur = cur + 1; 1966 int ncur = cur + 1;
729 1967
730 do 1968 do
731 ncur <<= 1; 1969 ncur <<= 1;
732 while (cnt > ncur); 1970 while (cnt > ncur);
733 1971
734 /* 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 */
735 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1973 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
736 { 1974 {
737 ncur *= elem; 1975 ncur *= elem;
738 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);
739 ncur = ncur - sizeof (void *) * 4; 1977 ncur = ncur - sizeof (void *) * 4;
… …
741 } 1979 }
742 1980
743 return ncur; 1981 return ncur;
744} 1982}
745 1983
746static noinline void * 1984ecb_noinline ecb_cold
1985static void *
747array_realloc (int elem, void *base, int *cur, int cnt) 1986array_realloc (int elem, void *base, int *cur, int cnt)
748{ 1987{
749 *cur = array_nextsize (elem, *cur, cnt); 1988 *cur = array_nextsize (elem, *cur, cnt);
750 return ev_realloc (base, elem * *cur); 1989 return ev_realloc (base, elem * *cur);
751} 1990}
752 1991
1992#define array_needsize_noinit(base,offset,count)
1993
753#define array_init_zero(base,count) \ 1994#define array_needsize_zerofill(base,offset,count) \
754 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1995 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
755 1996
756#define array_needsize(type,base,cur,cnt,init) \ 1997#define array_needsize(type,base,cur,cnt,init) \
757 if (expect_false ((cnt) > (cur))) \ 1998 if (ecb_expect_false ((cnt) > (cur))) \
758 { \ 1999 { \
759 int ocur_ = (cur); \ 2000 ecb_unused int ocur_ = (cur); \
760 (base) = (type *)array_realloc \ 2001 (base) = (type *)array_realloc \
761 (sizeof (type), (base), &(cur), (cnt)); \ 2002 (sizeof (type), (base), &(cur), (cnt)); \
762 init ((base) + (ocur_), (cur) - ocur_); \ 2003 init ((base), ocur_, ((cur) - ocur_)); \
763 } 2004 }
764 2005
765#if 0 2006#if 0
766#define array_slim(type,stem) \ 2007#define array_slim(type,stem) \
767 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2008 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
… …
776 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
777 2018
778/*****************************************************************************/ 2019/*****************************************************************************/
779 2020
780/* dummy callback for pending events */ 2021/* dummy callback for pending events */
781static void noinline 2022ecb_noinline
2023static void
782pendingcb (EV_P_ ev_prepare *w, int revents) 2024pendingcb (EV_P_ ev_prepare *w, int revents)
783{ 2025{
784} 2026}
785 2027
786void noinline 2028ecb_noinline
2029void
787ev_feed_event (EV_P_ void *w, int revents) 2030ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
788{ 2031{
789 W w_ = (W)w; 2032 W w_ = (W)w;
790 int pri = ABSPRI (w_); 2033 int pri = ABSPRI (w_);
791 2034
792 if (expect_false (w_->pending)) 2035 if (ecb_expect_false (w_->pending))
793 pendings [pri][w_->pending - 1].events |= revents; 2036 pendings [pri][w_->pending - 1].events |= revents;
794 else 2037 else
795 { 2038 {
796 w_->pending = ++pendingcnt [pri]; 2039 w_->pending = ++pendingcnt [pri];
797 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2040 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
798 pendings [pri][w_->pending - 1].w = w_; 2041 pendings [pri][w_->pending - 1].w = w_;
799 pendings [pri][w_->pending - 1].events = revents; 2042 pendings [pri][w_->pending - 1].events = revents;
800 } 2043 }
2044
2045 pendingpri = NUMPRI - 1;
801} 2046}
802 2047
803inline_speed void 2048inline_speed void
804feed_reverse (EV_P_ W w) 2049feed_reverse (EV_P_ W w)
805{ 2050{
806 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2051 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
807 rfeeds [rfeedcnt++] = w; 2052 rfeeds [rfeedcnt++] = w;
808} 2053}
809 2054
810inline_size void 2055inline_size void
811feed_reverse_done (EV_P_ int revents) 2056feed_reverse_done (EV_P_ int revents)
… …
825} 2070}
826 2071
827/*****************************************************************************/ 2072/*****************************************************************************/
828 2073
829inline_speed void 2074inline_speed void
830fd_event_nc (EV_P_ int fd, int revents) 2075fd_event_nocheck (EV_P_ int fd, int revents)
831{ 2076{
832 ANFD *anfd = anfds + fd; 2077 ANFD *anfd = anfds + fd;
833 ev_io *w; 2078 ev_io *w;
834 2079
835 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)
… …
846inline_speed void 2091inline_speed void
847fd_event (EV_P_ int fd, int revents) 2092fd_event (EV_P_ int fd, int revents)
848{ 2093{
849 ANFD *anfd = anfds + fd; 2094 ANFD *anfd = anfds + fd;
850 2095
851 if (expect_true (!anfd->reify)) 2096 if (ecb_expect_true (!anfd->reify))
852 fd_event_nc (EV_A_ fd, revents); 2097 fd_event_nocheck (EV_A_ fd, revents);
853} 2098}
854 2099
855void 2100void
856ev_feed_fd_event (EV_P_ int fd, int revents) 2101ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
857{ 2102{
858 if (fd >= 0 && fd < anfdmax) 2103 if (fd >= 0 && fd < anfdmax)
859 fd_event_nc (EV_A_ fd, revents); 2104 fd_event_nocheck (EV_A_ fd, revents);
860} 2105}
861 2106
862/* make sure the external fd watch events are in-sync */ 2107/* make sure the external fd watch events are in-sync */
863/* with the kernel/libev internal state */ 2108/* with the kernel/libev internal state */
864inline_size void 2109inline_size void
865fd_reify (EV_P) 2110fd_reify (EV_P)
866{ 2111{
867 int i; 2112 int i;
868 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
869 for (i = 0; i < fdchangecnt; ++i) 2139 for (i = 0; i < fdchangecnt; ++i)
870 { 2140 {
871 int fd = fdchanges [i]; 2141 int fd = fdchanges [i];
872 ANFD *anfd = anfds + fd; 2142 ANFD *anfd = anfds + fd;
873 ev_io *w; 2143 ev_io *w;
874 2144
875 unsigned char events = 0; 2145 unsigned char o_events = anfd->events;
2146 unsigned char o_reify = anfd->reify;
876 2147
877 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2148 anfd->reify = 0;
878 events |= (unsigned char)w->events;
879 2149
880#if EV_SELECT_IS_WINSOCKET 2150 /*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
881 if (events)
882 { 2151 {
883 unsigned long arg; 2152 anfd->events = 0;
884 #ifdef EV_FD_TO_WIN32_HANDLE 2153
885 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 2154 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
886 #else 2155 anfd->events |= (unsigned char)w->events;
887 anfd->handle = _get_osfhandle (fd); 2156
888 #endif 2157 if (o_events != anfd->events)
889 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 2158 o_reify = EV__IOFDSET; /* actually |= */
890 } 2159 }
891#endif
892 2160
893 { 2161 if (o_reify & EV__IOFDSET)
894 unsigned char o_events = anfd->events;
895 unsigned char o_reify = anfd->reify;
896
897 anfd->reify = 0;
898 anfd->events = events;
899
900 if (o_events != events || o_reify & EV__IOFDSET)
901 backend_modify (EV_A_ fd, o_events, events); 2162 backend_modify (EV_A_ fd, o_events, anfd->events);
902 }
903 } 2163 }
904 2164
905 fdchangecnt = 0; 2165 fdchangecnt = 0;
906} 2166}
907 2167
908/* something about the given fd changed */ 2168/* something about the given fd changed */
909inline_size void 2169inline_size
2170void
910fd_change (EV_P_ int fd, int flags) 2171fd_change (EV_P_ int fd, int flags)
911{ 2172{
912 unsigned char reify = anfds [fd].reify; 2173 unsigned char reify = anfds [fd].reify;
913 anfds [fd].reify |= flags; 2174 anfds [fd].reify |= flags;
914 2175
915 if (expect_true (!reify)) 2176 if (ecb_expect_true (!reify))
916 { 2177 {
917 ++fdchangecnt; 2178 ++fdchangecnt;
918 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2179 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
919 fdchanges [fdchangecnt - 1] = fd; 2180 fdchanges [fdchangecnt - 1] = fd;
920 } 2181 }
921} 2182}
922 2183
923/* 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 */
924inline_speed void 2185inline_speed ecb_cold void
925fd_kill (EV_P_ int fd) 2186fd_kill (EV_P_ int fd)
926{ 2187{
927 ev_io *w; 2188 ev_io *w;
928 2189
929 while ((w = (ev_io *)anfds [fd].head)) 2190 while ((w = (ev_io *)anfds [fd].head))
… …
931 ev_io_stop (EV_A_ w); 2192 ev_io_stop (EV_A_ w);
932 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);
933 } 2194 }
934} 2195}
935 2196
936/* check whether the given fd is atcually valid, for error recovery */ 2197/* check whether the given fd is actually valid, for error recovery */
937inline_size int 2198inline_size ecb_cold int
938fd_valid (int fd) 2199fd_valid (int fd)
939{ 2200{
940#ifdef _WIN32 2201#ifdef _WIN32
941 return _get_osfhandle (fd) != -1; 2202 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
942#else 2203#else
943 return fcntl (fd, F_GETFD) != -1; 2204 return fcntl (fd, F_GETFD) != -1;
944#endif 2205#endif
945} 2206}
946 2207
947/* called on EBADF to verify fds */ 2208/* called on EBADF to verify fds */
948static void noinline 2209ecb_noinline ecb_cold
2210static void
949fd_ebadf (EV_P) 2211fd_ebadf (EV_P)
950{ 2212{
951 int fd; 2213 int fd;
952 2214
953 for (fd = 0; fd < anfdmax; ++fd) 2215 for (fd = 0; fd < anfdmax; ++fd)
… …
955 if (!fd_valid (fd) && errno == EBADF) 2217 if (!fd_valid (fd) && errno == EBADF)
956 fd_kill (EV_A_ fd); 2218 fd_kill (EV_A_ fd);
957} 2219}
958 2220
959/* 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 */
960static void noinline 2222ecb_noinline ecb_cold
2223static void
961fd_enomem (EV_P) 2224fd_enomem (EV_P)
962{ 2225{
963 int fd; 2226 int fd;
964 2227
965 for (fd = anfdmax; fd--; ) 2228 for (fd = anfdmax; fd--; )
966 if (anfds [fd].events) 2229 if (anfds [fd].events)
967 { 2230 {
968 fd_kill (EV_A_ fd); 2231 fd_kill (EV_A_ fd);
969 return; 2232 break;
970 } 2233 }
971} 2234}
972 2235
973/* 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 */
974static void noinline 2237ecb_noinline
2238static void
975fd_rearm_all (EV_P) 2239fd_rearm_all (EV_P)
976{ 2240{
977 int fd; 2241 int fd;
978 2242
979 for (fd = 0; fd < anfdmax; ++fd) 2243 for (fd = 0; fd < anfdmax; ++fd)
… …
983 anfds [fd].emask = 0; 2247 anfds [fd].emask = 0;
984 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); 2248 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
985 } 2249 }
986} 2250}
987 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
988/*****************************************************************************/ 2266/*****************************************************************************/
989 2267
990/* 2268/*
991 * 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
992 * 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
993 * the branching factor of the d-tree. 2271 * the branching factor of the d-tree.
994 */ 2272 */
995 2273
996/* 2274/*
… …
1018 ev_tstamp minat; 2296 ev_tstamp minat;
1019 ANHE *minpos; 2297 ANHE *minpos;
1020 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; 2298 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
1021 2299
1022 /* find minimum child */ 2300 /* find minimum child */
1023 if (expect_true (pos + DHEAP - 1 < E)) 2301 if (ecb_expect_true (pos + DHEAP - 1 < E))
1024 { 2302 {
1025 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2303 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1026 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));
1027 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));
1028 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));
… …
1064 2342
1065 for (;;) 2343 for (;;)
1066 { 2344 {
1067 int c = k << 1; 2345 int c = k << 1;
1068 2346
1069 if (c > N + HEAP0 - 1) 2347 if (c >= N + HEAP0)
1070 break; 2348 break;
1071 2349
1072 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 2350 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
1073 ? 1 : 0; 2351 ? 1 : 0;
1074 2352
… …
1110 2388
1111/* move an element suitably so it is in a correct place */ 2389/* move an element suitably so it is in a correct place */
1112inline_size void 2390inline_size void
1113adjustheap (ANHE *heap, int N, int k) 2391adjustheap (ANHE *heap, int N, int k)
1114{ 2392{
1115 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 2393 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1116 upheap (heap, k); 2394 upheap (heap, k);
1117 else 2395 else
1118 downheap (heap, N, k); 2396 downheap (heap, N, k);
1119} 2397}
1120 2398
… …
1133/*****************************************************************************/ 2411/*****************************************************************************/
1134 2412
1135/* associate signal watchers to a signal signal */ 2413/* associate signal watchers to a signal signal */
1136typedef struct 2414typedef struct
1137{ 2415{
2416 EV_ATOMIC_T pending;
2417#if EV_MULTIPLICITY
2418 EV_P;
2419#endif
1138 WL head; 2420 WL head;
1139 EV_ATOMIC_T gotsig;
1140} ANSIG; 2421} ANSIG;
1141 2422
1142static ANSIG *signals; 2423static ANSIG signals [EV_NSIG - 1];
1143static int signalmax;
1144
1145static EV_ATOMIC_T gotsig;
1146 2424
1147/*****************************************************************************/ 2425/*****************************************************************************/
1148 2426
1149/* used to prepare libev internal fd's */ 2427#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1150/* 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
1151inline_speed void 2475inline_speed void
1152fd_intern (int fd) 2476evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1153{ 2477{
1154#ifdef _WIN32 2478 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1155 unsigned long arg = 1;
1156 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1157#else
1158 fcntl (fd, F_SETFD, FD_CLOEXEC);
1159 fcntl (fd, F_SETFL, O_NONBLOCK);
1160#endif
1161}
1162 2479
1163static void noinline 2480 if (ecb_expect_true (*flag))
1164evpipe_init (EV_P) 2481 return;
1165{ 2482
1166 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)
1167 { 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
1168#if EV_USE_EVENTFD 2499#if EV_USE_EVENTFD
1169 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2500 if (evpipe [0] < 0)
1170 if (evfd < 0 && errno == EINVAL)
1171 evfd = eventfd (0, 0);
1172
1173 if (evfd >= 0)
1174 { 2501 {
1175 evpipe [0] = -1; 2502 uint64_t counter = 1;
1176 fd_intern (evfd); /* doing it twice doesn't hurt */ 2503 write (evpipe [1], &counter, sizeof (uint64_t));
1177 ev_io_set (&pipe_w, evfd, EV_READ);
1178 } 2504 }
1179 else 2505 else
1180#endif 2506#endif
1181 { 2507 {
1182 while (pipe (evpipe)) 2508#ifdef _WIN32
1183 ev_syserr ("(libev) error creating signal/async pipe"); 2509 WSABUF buf;
1184 2510 DWORD sent;
1185 fd_intern (evpipe [0]); 2511 buf.buf = (char *)&buf;
1186 fd_intern (evpipe [1]); 2512 buf.len = 1;
1187 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
1188 } 2517 }
1189
1190 ev_io_start (EV_A_ &pipe_w);
1191 ev_unref (EV_A); /* watcher should not keep loop alive */
1192 }
1193}
1194
1195inline_size void
1196evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1197{
1198 if (!*flag)
1199 {
1200 int old_errno = errno; /* save errno because write might clobber it */
1201
1202 *flag = 1;
1203
1204#if EV_USE_EVENTFD
1205 if (evfd >= 0)
1206 {
1207 uint64_t counter = 1;
1208 write (evfd, &counter, sizeof (uint64_t));
1209 }
1210 else
1211#endif
1212 write (evpipe [1], &old_errno, 1);
1213 2518
1214 errno = old_errno; 2519 errno = old_errno;
1215 } 2520 }
1216} 2521}
1217 2522
1218/* called whenever the libev signal pipe */ 2523/* called whenever the libev signal pipe */
1219/* got some events (signal, async) */ 2524/* got some events (signal, async) */
1220static void 2525static void
1221pipecb (EV_P_ ev_io *iow, int revents) 2526pipecb (EV_P_ ev_io *iow, int revents)
1222{ 2527{
2528 int i;
2529
2530 if (revents & EV_READ)
2531 {
1223#if EV_USE_EVENTFD 2532#if EV_USE_EVENTFD
1224 if (evfd >= 0) 2533 if (evpipe [0] < 0)
1225 { 2534 {
1226 uint64_t counter; 2535 uint64_t counter;
1227 read (evfd, &counter, sizeof (uint64_t)); 2536 read (evpipe [1], &counter, sizeof (uint64_t));
1228 } 2537 }
1229 else 2538 else
1230#endif 2539#endif
1231 { 2540 {
1232 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
1233 read (evpipe [0], &dummy, 1); 2550 read (evpipe [0], &dummy, sizeof (dummy));
2551#endif
2552 }
2553 }
2554
2555 pipe_write_skipped = 0;
2556
2557 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2558
2559#if EV_SIGNAL_ENABLE
2560 if (sig_pending)
1234 } 2561 {
2562 sig_pending = 0;
1235 2563
1236 if (gotsig && ev_is_default_loop (EV_A)) 2564 ECB_MEMORY_FENCE;
1237 {
1238 int signum;
1239 gotsig = 0;
1240 2565
1241 for (signum = signalmax; signum--; ) 2566 for (i = EV_NSIG - 1; i--; )
1242 if (signals [signum].gotsig) 2567 if (ecb_expect_false (signals [i].pending))
1243 ev_feed_signal_event (EV_A_ signum + 1); 2568 ev_feed_signal_event (EV_A_ i + 1);
1244 } 2569 }
2570#endif
1245 2571
1246#if EV_ASYNC_ENABLE 2572#if EV_ASYNC_ENABLE
1247 if (gotasync) 2573 if (async_pending)
1248 { 2574 {
1249 int i; 2575 async_pending = 0;
1250 gotasync = 0; 2576
2577 ECB_MEMORY_FENCE;
1251 2578
1252 for (i = asynccnt; i--; ) 2579 for (i = asynccnt; i--; )
1253 if (asyncs [i]->sent) 2580 if (asyncs [i]->sent)
1254 { 2581 {
1255 asyncs [i]->sent = 0; 2582 asyncs [i]->sent = 0;
2583 ECB_MEMORY_FENCE_RELEASE;
1256 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2584 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1257 } 2585 }
1258 } 2586 }
1259#endif 2587#endif
1260} 2588}
1261 2589
1262/*****************************************************************************/ 2590/*****************************************************************************/
1263 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
1264static void 2608static void
1265ev_sighandler (int signum) 2609ev_sighandler (int signum)
1266{ 2610{
2611#ifdef _WIN32
2612 signal (signum, ev_sighandler);
2613#endif
2614
2615 ev_feed_signal (signum);
2616}
2617
2618ecb_noinline
2619void
2620ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
2621{
2622 WL w;
2623
2624 if (ecb_expect_false (signum <= 0 || signum >= EV_NSIG))
2625 return;
2626
2627 --signum;
2628
1267#if EV_MULTIPLICITY 2629#if EV_MULTIPLICITY
1268 struct ev_loop *loop = &default_loop_struct; 2630 /* it is permissible to try to feed a signal to the wrong loop */
1269#endif 2631 /* or, likely more useful, feeding a signal nobody is waiting for */
1270 2632
1271#if _WIN32 2633 if (ecb_expect_false (signals [signum].loop != EV_A))
1272 signal (signum, ev_sighandler);
1273#endif
1274
1275 signals [signum - 1].gotsig = 1;
1276 evpipe_write (EV_A_ &gotsig);
1277}
1278
1279void noinline
1280ev_feed_signal_event (EV_P_ int signum)
1281{
1282 WL w;
1283
1284#if EV_MULTIPLICITY
1285 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1286#endif
1287
1288 --signum;
1289
1290 if (signum < 0 || signum >= signalmax)
1291 return; 2634 return;
2635#endif
1292 2636
1293 signals [signum].gotsig = 0; 2637 signals [signum].pending = 0;
2638 ECB_MEMORY_FENCE_RELEASE;
1294 2639
1295 for (w = signals [signum].head; w; w = w->next) 2640 for (w = signals [signum].head; w; w = w->next)
1296 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2641 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1297} 2642}
1298 2643
1299#if EV_USE_SIGNALFD 2644#if EV_USE_SIGNALFD
1300static void 2645static void
1301sigfdcb (EV_P_ ev_io *iow, int revents) 2646sigfdcb (EV_P_ ev_io *iow, int revents)
1302{ 2647{
1303 struct signalfd_siginfo si[4], *sip; 2648 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1304 2649
1305 for (;;) 2650 for (;;)
1306 { 2651 {
1307 ssize_t res = read (sigfd, si, sizeof (si)); 2652 ssize_t res = read (sigfd, si, sizeof (si));
1308 2653
… …
1314 break; 2659 break;
1315 } 2660 }
1316} 2661}
1317#endif 2662#endif
1318 2663
2664#endif
2665
1319/*****************************************************************************/ 2666/*****************************************************************************/
1320 2667
2668#if EV_CHILD_ENABLE
1321static WL childs [EV_PID_HASHSIZE]; 2669static WL childs [EV_PID_HASHSIZE];
1322
1323#ifndef _WIN32
1324 2670
1325static ev_signal childev; 2671static ev_signal childev;
1326 2672
1327#ifndef WIFCONTINUED 2673#ifndef WIFCONTINUED
1328# define WIFCONTINUED(status) 0 2674# define WIFCONTINUED(status) 0
… …
1333child_reap (EV_P_ int chain, int pid, int status) 2679child_reap (EV_P_ int chain, int pid, int status)
1334{ 2680{
1335 ev_child *w; 2681 ev_child *w;
1336 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2682 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1337 2683
1338 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)
1339 { 2685 {
1340 if ((w->pid == pid || !w->pid) 2686 if ((w->pid == pid || !w->pid)
1341 && (!traced || (w->flags & 1))) 2687 && (!traced || (w->flags & 1)))
1342 { 2688 {
1343 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 */
… …
1368 /* 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 */
1369 /* 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 */
1370 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2716 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1371 2717
1372 child_reap (EV_A_ pid, pid, status); 2718 child_reap (EV_A_ pid, pid, status);
1373 if (EV_PID_HASHSIZE > 1) 2719 if ((EV_PID_HASHSIZE) > 1)
1374 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 */
1375} 2721}
1376 2722
1377#endif 2723#endif
1378 2724
1379/*****************************************************************************/ 2725/*****************************************************************************/
1380 2726
2727#if EV_USE_IOCP
2728# include "ev_iocp.c"
2729#endif
1381#if EV_USE_PORT 2730#if EV_USE_PORT
1382# include "ev_port.c" 2731# include "ev_port.c"
1383#endif 2732#endif
1384#if EV_USE_KQUEUE 2733#if EV_USE_KQUEUE
1385# include "ev_kqueue.c" 2734# include "ev_kqueue.c"
1386#endif 2735#endif
1387#if EV_USE_EPOLL 2736#if EV_USE_EPOLL
1388# include "ev_epoll.c" 2737# include "ev_epoll.c"
1389#endif 2738#endif
2739#if EV_USE_LINUXAIO
2740# include "ev_linuxaio.c"
2741#endif
1390#if EV_USE_POLL 2742#if EV_USE_POLL
1391# include "ev_poll.c" 2743# include "ev_poll.c"
1392#endif 2744#endif
1393#if EV_USE_SELECT 2745#if EV_USE_SELECT
1394# include "ev_select.c" 2746# include "ev_select.c"
1395#endif 2747#endif
1396 2748
1397int 2749ecb_cold int
1398ev_version_major (void) 2750ev_version_major (void) EV_NOEXCEPT
1399{ 2751{
1400 return EV_VERSION_MAJOR; 2752 return EV_VERSION_MAJOR;
1401} 2753}
1402 2754
1403int 2755ecb_cold int
1404ev_version_minor (void) 2756ev_version_minor (void) EV_NOEXCEPT
1405{ 2757{
1406 return EV_VERSION_MINOR; 2758 return EV_VERSION_MINOR;
1407} 2759}
1408 2760
1409/* 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 */
1410int inline_size 2762inline_size ecb_cold int
1411enable_secure (void) 2763enable_secure (void)
1412{ 2764{
1413#ifdef _WIN32 2765#ifdef _WIN32
1414 return 0; 2766 return 0;
1415#else 2767#else
1416 return getuid () != geteuid () 2768 return getuid () != geteuid ()
1417 || getgid () != getegid (); 2769 || getgid () != getegid ();
1418#endif 2770#endif
1419} 2771}
1420 2772
2773ecb_cold
1421unsigned int 2774unsigned int
1422ev_supported_backends (void) 2775ev_supported_backends (void) EV_NOEXCEPT
1423{ 2776{
1424 unsigned int flags = 0; 2777 unsigned int flags = 0;
1425 2778
1426 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2779 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1427 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2780 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
1428 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 2781 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2782 if (EV_USE_LINUXAIO) flags |= EVBACKEND_LINUXAIO;
1429 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 2783 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
1430 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2784 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
1431 2785
1432 return flags; 2786 return flags;
1433} 2787}
1434 2788
2789ecb_cold
1435unsigned int 2790unsigned int
1436ev_recommended_backends (void) 2791ev_recommended_backends (void) EV_NOEXCEPT
1437{ 2792{
1438 unsigned int flags = ev_supported_backends (); 2793 unsigned int flags = ev_supported_backends ();
1439 2794
1440#ifndef __NetBSD__ 2795#ifndef __NetBSD__
1441 /* kqueue is borked on everything but netbsd apparently */ 2796 /* kqueue is borked on everything but netbsd apparently */
… …
1445#ifdef __APPLE__ 2800#ifdef __APPLE__
1446 /* only select works correctly on that "unix-certified" platform */ 2801 /* only select works correctly on that "unix-certified" platform */
1447 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2802 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1448 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 */
1449#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
1450 2813
1451 return flags; 2814 return flags;
1452} 2815}
1453 2816
2817ecb_cold
1454unsigned int 2818unsigned int
1455ev_embeddable_backends (void) 2819ev_embeddable_backends (void) EV_NOEXCEPT
1456{ 2820{
1457 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2821 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1458 2822
1459 /* 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 */
1460 /* please fix it and tell me how to detect the fix */ 2824 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1461 flags &= ~EVBACKEND_EPOLL; 2825 flags &= ~EVBACKEND_EPOLL;
1462 2826
1463 return flags; 2827 return flags;
1464} 2828}
1465 2829
1466unsigned int 2830unsigned int
1467ev_backend (EV_P) 2831ev_backend (EV_P) EV_NOEXCEPT
1468{ 2832{
1469 return backend; 2833 return backend;
1470} 2834}
1471 2835
1472#if EV_MINIMAL < 2 2836#if EV_FEATURE_API
1473unsigned int 2837unsigned int
1474ev_loop_count (EV_P) 2838ev_iteration (EV_P) EV_NOEXCEPT
1475{ 2839{
1476 return loop_count; 2840 return loop_count;
1477} 2841}
1478 2842
1479unsigned int 2843unsigned int
1480ev_loop_depth (EV_P) 2844ev_depth (EV_P) EV_NOEXCEPT
1481{ 2845{
1482 return loop_depth; 2846 return loop_depth;
1483} 2847}
1484 2848
1485void 2849void
1486ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2850ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1487{ 2851{
1488 io_blocktime = interval; 2852 io_blocktime = interval;
1489} 2853}
1490 2854
1491void 2855void
1492ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2856ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1493{ 2857{
1494 timeout_blocktime = interval; 2858 timeout_blocktime = interval;
1495} 2859}
1496 2860
1497void 2861void
1498ev_set_userdata (EV_P_ void *data) 2862ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
1499{ 2863{
1500 userdata = data; 2864 userdata = data;
1501} 2865}
1502 2866
1503void * 2867void *
1504ev_userdata (EV_P) 2868ev_userdata (EV_P) EV_NOEXCEPT
1505{ 2869{
1506 return userdata; 2870 return userdata;
1507} 2871}
1508 2872
2873void
1509void 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
1510{ 2875{
1511 invoke_cb = invoke_pending_cb; 2876 invoke_cb = invoke_pending_cb;
1512} 2877}
1513 2878
2879void
1514void 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
1515{ 2881{
1516 release_cb = release; 2882 release_cb = release;
1517 acquire_cb = acquire; 2883 acquire_cb = acquire;
1518} 2884}
1519#endif 2885#endif
1520 2886
1521/* initialise a loop structure, must be zero-initialised */ 2887/* initialise a loop structure, must be zero-initialised */
1522static void noinline 2888ecb_noinline ecb_cold
2889static void
1523loop_init (EV_P_ unsigned int flags) 2890loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
1524{ 2891{
1525 if (!backend) 2892 if (!backend)
1526 { 2893 {
2894 origflags = flags;
2895
1527#if EV_USE_REALTIME 2896#if EV_USE_REALTIME
1528 if (!have_realtime) 2897 if (!have_realtime)
1529 { 2898 {
1530 struct timespec ts; 2899 struct timespec ts;
1531 2900
… …
1542 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 2911 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1543 have_monotonic = 1; 2912 have_monotonic = 1;
1544 } 2913 }
1545#endif 2914#endif
1546 2915
1547 ev_rt_now = ev_time ();
1548 mn_now = get_clock ();
1549 now_floor = mn_now;
1550 rtmn_diff = ev_rt_now - mn_now;
1551#if EV_MINIMAL < 2
1552 invoke_cb = ev_invoke_pending;
1553#endif
1554
1555 io_blocktime = 0.;
1556 timeout_blocktime = 0.;
1557 backend = 0;
1558 backend_fd = -1;
1559 gotasync = 0;
1560#if EV_USE_INOTIFY
1561 fs_fd = -2;
1562#endif
1563#if EV_USE_SIGNALFD
1564 sigfd = -2;
1565#endif
1566
1567 /* pid check not overridable via env */ 2916 /* pid check not overridable via env */
1568#ifndef _WIN32 2917#ifndef _WIN32
1569 if (flags & EVFLAG_FORKCHECK) 2918 if (flags & EVFLAG_FORKCHECK)
1570 curpid = getpid (); 2919 curpid = getpid ();
1571#endif 2920#endif
… …
1573 if (!(flags & EVFLAG_NOENV) 2922 if (!(flags & EVFLAG_NOENV)
1574 && !enable_secure () 2923 && !enable_secure ()
1575 && getenv ("LIBEV_FLAGS")) 2924 && getenv ("LIBEV_FLAGS"))
1576 flags = atoi (getenv ("LIBEV_FLAGS")); 2925 flags = atoi (getenv ("LIBEV_FLAGS"));
1577 2926
1578 if (!(flags & 0x0000ffffU)) 2927 ev_rt_now = ev_time ();
2928 mn_now = get_clock ();
2929 now_floor = mn_now;
2930 rtmn_diff = ev_rt_now - mn_now;
2931#if EV_FEATURE_API
2932 invoke_cb = ev_invoke_pending;
2933#endif
2934
2935 io_blocktime = 0.;
2936 timeout_blocktime = 0.;
2937 backend = 0;
2938 backend_fd = -1;
2939 sig_pending = 0;
2940#if EV_ASYNC_ENABLE
2941 async_pending = 0;
2942#endif
2943 pipe_write_skipped = 0;
2944 pipe_write_wanted = 0;
2945 evpipe [0] = -1;
2946 evpipe [1] = -1;
2947#if EV_USE_INOTIFY
2948 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2949#endif
2950#if EV_USE_SIGNALFD
2951 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
2952#endif
2953
2954 if (!(flags & EVBACKEND_MASK))
1579 flags |= ev_recommended_backends (); 2955 flags |= ev_recommended_backends ();
1580 2956
2957#if EV_USE_IOCP
2958 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2959#endif
1581#if EV_USE_PORT 2960#if EV_USE_PORT
1582 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2961 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1583#endif 2962#endif
1584#if EV_USE_KQUEUE 2963#if EV_USE_KQUEUE
1585 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2964 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
2965#endif
2966#if EV_USE_LINUXAIO
2967 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
1586#endif 2968#endif
1587#if EV_USE_EPOLL 2969#if EV_USE_EPOLL
1588 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 2970 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
1589#endif 2971#endif
1590#if EV_USE_POLL 2972#if EV_USE_POLL
1591 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 2973 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
1592#endif 2974#endif
1593#if EV_USE_SELECT 2975#if EV_USE_SELECT
1594 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2976 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
1595#endif 2977#endif
1596 2978
1597 ev_prepare_init (&pending_w, pendingcb); 2979 ev_prepare_init (&pending_w, pendingcb);
1598 2980
2981#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1599 ev_init (&pipe_w, pipecb); 2982 ev_init (&pipe_w, pipecb);
1600 ev_set_priority (&pipe_w, EV_MAXPRI); 2983 ev_set_priority (&pipe_w, EV_MAXPRI);
2984#endif
1601 } 2985 }
1602} 2986}
1603 2987
1604/* free up a loop structure */ 2988/* free up a loop structure */
1605static void noinline 2989ecb_cold
2990void
1606loop_destroy (EV_P) 2991ev_loop_destroy (EV_P)
1607{ 2992{
1608 int i; 2993 int i;
2994
2995#if EV_MULTIPLICITY
2996 /* mimic free (0) */
2997 if (!EV_A)
2998 return;
2999#endif
3000
3001#if EV_CLEANUP_ENABLE
3002 /* queue cleanup watchers (and execute them) */
3003 if (ecb_expect_false (cleanupcnt))
3004 {
3005 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
3006 EV_INVOKE_PENDING;
3007 }
3008#endif
3009
3010#if EV_CHILD_ENABLE
3011 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
3012 {
3013 ev_ref (EV_A); /* child watcher */
3014 ev_signal_stop (EV_A_ &childev);
3015 }
3016#endif
1609 3017
1610 if (ev_is_active (&pipe_w)) 3018 if (ev_is_active (&pipe_w))
1611 { 3019 {
1612 /*ev_ref (EV_A);*/ 3020 /*ev_ref (EV_A);*/
1613 /*ev_io_stop (EV_A_ &pipe_w);*/ 3021 /*ev_io_stop (EV_A_ &pipe_w);*/
1614 3022
1615#if EV_USE_EVENTFD 3023 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1616 if (evfd >= 0) 3024 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1617 close (evfd);
1618#endif
1619
1620 if (evpipe [0] >= 0)
1621 {
1622 close (evpipe [0]);
1623 close (evpipe [1]);
1624 }
1625 } 3025 }
1626 3026
1627#if EV_USE_SIGNALFD 3027#if EV_USE_SIGNALFD
1628 if (ev_is_active (&sigfd_w)) 3028 if (ev_is_active (&sigfd_w))
1629 {
1630 /*ev_ref (EV_A);*/
1631 /*ev_io_stop (EV_A_ &sigfd_w);*/
1632
1633 close (sigfd); 3029 close (sigfd);
1634 }
1635#endif 3030#endif
1636 3031
1637#if EV_USE_INOTIFY 3032#if EV_USE_INOTIFY
1638 if (fs_fd >= 0) 3033 if (fs_fd >= 0)
1639 close (fs_fd); 3034 close (fs_fd);
1640#endif 3035#endif
1641 3036
1642 if (backend_fd >= 0) 3037 if (backend_fd >= 0)
1643 close (backend_fd); 3038 close (backend_fd);
1644 3039
3040#if EV_USE_IOCP
3041 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
3042#endif
1645#if EV_USE_PORT 3043#if EV_USE_PORT
1646 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3044 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1647#endif 3045#endif
1648#if EV_USE_KQUEUE 3046#if EV_USE_KQUEUE
1649 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3047 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
3048#endif
3049#if EV_USE_LINUXAIO
3050 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
1650#endif 3051#endif
1651#if EV_USE_EPOLL 3052#if EV_USE_EPOLL
1652 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3053 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
1653#endif 3054#endif
1654#if EV_USE_POLL 3055#if EV_USE_POLL
1655 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3056 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
1656#endif 3057#endif
1657#if EV_USE_SELECT 3058#if EV_USE_SELECT
1658 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3059 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
1659#endif 3060#endif
1660 3061
1661 for (i = NUMPRI; i--; ) 3062 for (i = NUMPRI; i--; )
1662 { 3063 {
1663 array_free (pending, [i]); 3064 array_free (pending, [i]);
… …
1676 array_free (periodic, EMPTY); 3077 array_free (periodic, EMPTY);
1677#endif 3078#endif
1678#if EV_FORK_ENABLE 3079#if EV_FORK_ENABLE
1679 array_free (fork, EMPTY); 3080 array_free (fork, EMPTY);
1680#endif 3081#endif
3082#if EV_CLEANUP_ENABLE
3083 array_free (cleanup, EMPTY);
3084#endif
1681 array_free (prepare, EMPTY); 3085 array_free (prepare, EMPTY);
1682 array_free (check, EMPTY); 3086 array_free (check, EMPTY);
1683#if EV_ASYNC_ENABLE 3087#if EV_ASYNC_ENABLE
1684 array_free (async, EMPTY); 3088 array_free (async, EMPTY);
1685#endif 3089#endif
1686 3090
1687 backend = 0; 3091 backend = 0;
3092
3093#if EV_MULTIPLICITY
3094 if (ev_is_default_loop (EV_A))
3095#endif
3096 ev_default_loop_ptr = 0;
3097#if EV_MULTIPLICITY
3098 else
3099 ev_free (EV_A);
3100#endif
1688} 3101}
1689 3102
1690#if EV_USE_INOTIFY 3103#if EV_USE_INOTIFY
1691inline_size void infy_fork (EV_P); 3104inline_size void infy_fork (EV_P);
1692#endif 3105#endif
1693 3106
1694inline_size void 3107inline_size void
1695loop_fork (EV_P) 3108loop_fork (EV_P)
1696{ 3109{
1697#if EV_USE_PORT 3110#if EV_USE_PORT
1698 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3111 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1699#endif 3112#endif
1700#if EV_USE_KQUEUE 3113#if EV_USE_KQUEUE
1701 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 3114 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
3115#endif
3116#if EV_USE_LINUXAIO
3117 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
1702#endif 3118#endif
1703#if EV_USE_EPOLL 3119#if EV_USE_EPOLL
1704 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3120 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
1705#endif 3121#endif
1706#if EV_USE_INOTIFY 3122#if EV_USE_INOTIFY
1707 infy_fork (EV_A); 3123 infy_fork (EV_A);
1708#endif 3124#endif
1709 3125
3126#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1710 if (ev_is_active (&pipe_w)) 3127 if (ev_is_active (&pipe_w) && postfork != 2)
1711 { 3128 {
1712 /* this "locks" the handlers against writing to the pipe */ 3129 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1713 /* while we modify the fd vars */
1714 gotsig = 1;
1715#if EV_ASYNC_ENABLE
1716 gotasync = 1;
1717#endif
1718 3130
1719 ev_ref (EV_A); 3131 ev_ref (EV_A);
1720 ev_io_stop (EV_A_ &pipe_w); 3132 ev_io_stop (EV_A_ &pipe_w);
1721 3133
1722#if EV_USE_EVENTFD
1723 if (evfd >= 0)
1724 close (evfd);
1725#endif
1726
1727 if (evpipe [0] >= 0) 3134 if (evpipe [0] >= 0)
1728 { 3135 EV_WIN32_CLOSE_FD (evpipe [0]);
1729 close (evpipe [0]);
1730 close (evpipe [1]);
1731 }
1732 3136
1733 evpipe_init (EV_A); 3137 evpipe_init (EV_A);
1734 /* now iterate over everything, in case we missed something */ 3138 /* iterate over everything, in case we missed something before */
1735 pipecb (EV_A_ &pipe_w, EV_READ); 3139 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1736 } 3140 }
3141#endif
1737 3142
1738 postfork = 0; 3143 postfork = 0;
1739} 3144}
1740 3145
1741#if EV_MULTIPLICITY 3146#if EV_MULTIPLICITY
1742 3147
3148ecb_cold
1743struct ev_loop * 3149struct ev_loop *
1744ev_loop_new (unsigned int flags) 3150ev_loop_new (unsigned int flags) EV_NOEXCEPT
1745{ 3151{
1746 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3152 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1747 3153
1748 memset (loop, 0, sizeof (struct ev_loop)); 3154 memset (EV_A, 0, sizeof (struct ev_loop));
1749 loop_init (EV_A_ flags); 3155 loop_init (EV_A_ flags);
1750 3156
1751 if (ev_backend (EV_A)) 3157 if (ev_backend (EV_A))
1752 return loop; 3158 return EV_A;
1753 3159
3160 ev_free (EV_A);
1754 return 0; 3161 return 0;
1755} 3162}
1756 3163
1757void
1758ev_loop_destroy (EV_P)
1759{
1760 loop_destroy (EV_A);
1761 ev_free (loop);
1762}
1763
1764void
1765ev_loop_fork (EV_P)
1766{
1767 postfork = 1; /* must be in line with ev_default_fork */
1768}
1769#endif /* multiplicity */ 3164#endif /* multiplicity */
1770 3165
1771#if EV_VERIFY 3166#if EV_VERIFY
1772static void noinline 3167ecb_noinline ecb_cold
3168static void
1773verify_watcher (EV_P_ W w) 3169verify_watcher (EV_P_ W w)
1774{ 3170{
1775 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3171 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1776 3172
1777 if (w->pending) 3173 if (w->pending)
1778 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3174 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1779} 3175}
1780 3176
1781static void noinline 3177ecb_noinline ecb_cold
3178static void
1782verify_heap (EV_P_ ANHE *heap, int N) 3179verify_heap (EV_P_ ANHE *heap, int N)
1783{ 3180{
1784 int i; 3181 int i;
1785 3182
1786 for (i = HEAP0; i < N + HEAP0; ++i) 3183 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1791 3188
1792 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3189 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1793 } 3190 }
1794} 3191}
1795 3192
1796static void noinline 3193ecb_noinline ecb_cold
3194static void
1797array_verify (EV_P_ W *ws, int cnt) 3195array_verify (EV_P_ W *ws, int cnt)
1798{ 3196{
1799 while (cnt--) 3197 while (cnt--)
1800 { 3198 {
1801 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3199 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1802 verify_watcher (EV_A_ ws [cnt]); 3200 verify_watcher (EV_A_ ws [cnt]);
1803 } 3201 }
1804} 3202}
1805#endif 3203#endif
1806 3204
1807#if EV_MINIMAL < 2 3205#if EV_FEATURE_API
1808void 3206void ecb_cold
1809ev_loop_verify (EV_P) 3207ev_verify (EV_P) EV_NOEXCEPT
1810{ 3208{
1811#if EV_VERIFY 3209#if EV_VERIFY
1812 int i; 3210 int i;
1813 WL w; 3211 WL w, w2;
1814 3212
1815 assert (activecnt >= -1); 3213 assert (activecnt >= -1);
1816 3214
1817 assert (fdchangemax >= fdchangecnt); 3215 assert (fdchangemax >= fdchangecnt);
1818 for (i = 0; i < fdchangecnt; ++i) 3216 for (i = 0; i < fdchangecnt; ++i)
1819 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3217 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1820 3218
1821 assert (anfdmax >= 0); 3219 assert (anfdmax >= 0);
1822 for (i = 0; i < anfdmax; ++i) 3220 for (i = 0; i < anfdmax; ++i)
3221 {
3222 int j = 0;
3223
1823 for (w = anfds [i].head; w; w = w->next) 3224 for (w = w2 = anfds [i].head; w; w = w->next)
1824 { 3225 {
1825 verify_watcher (EV_A_ (W)w); 3226 verify_watcher (EV_A_ (W)w);
3227
3228 if (j++ & 1)
3229 {
3230 assert (("libev: io watcher list contains a loop", w != w2));
3231 w2 = w2->next;
3232 }
3233
1826 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3234 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1827 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 3235 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1828 } 3236 }
3237 }
1829 3238
1830 assert (timermax >= timercnt); 3239 assert (timermax >= timercnt);
1831 verify_heap (EV_A_ timers, timercnt); 3240 verify_heap (EV_A_ timers, timercnt);
1832 3241
1833#if EV_PERIODIC_ENABLE 3242#if EV_PERIODIC_ENABLE
… …
1848#if EV_FORK_ENABLE 3257#if EV_FORK_ENABLE
1849 assert (forkmax >= forkcnt); 3258 assert (forkmax >= forkcnt);
1850 array_verify (EV_A_ (W *)forks, forkcnt); 3259 array_verify (EV_A_ (W *)forks, forkcnt);
1851#endif 3260#endif
1852 3261
3262#if EV_CLEANUP_ENABLE
3263 assert (cleanupmax >= cleanupcnt);
3264 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
3265#endif
3266
1853#if EV_ASYNC_ENABLE 3267#if EV_ASYNC_ENABLE
1854 assert (asyncmax >= asynccnt); 3268 assert (asyncmax >= asynccnt);
1855 array_verify (EV_A_ (W *)asyncs, asynccnt); 3269 array_verify (EV_A_ (W *)asyncs, asynccnt);
1856#endif 3270#endif
1857 3271
3272#if EV_PREPARE_ENABLE
1858 assert (preparemax >= preparecnt); 3273 assert (preparemax >= preparecnt);
1859 array_verify (EV_A_ (W *)prepares, preparecnt); 3274 array_verify (EV_A_ (W *)prepares, preparecnt);
3275#endif
1860 3276
3277#if EV_CHECK_ENABLE
1861 assert (checkmax >= checkcnt); 3278 assert (checkmax >= checkcnt);
1862 array_verify (EV_A_ (W *)checks, checkcnt); 3279 array_verify (EV_A_ (W *)checks, checkcnt);
3280#endif
1863 3281
1864# if 0 3282# if 0
3283#if EV_CHILD_ENABLE
1865 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 3284 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1866 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 3285 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
3286#endif
1867# endif 3287# endif
1868#endif 3288#endif
1869} 3289}
1870#endif 3290#endif
1871 3291
1872#if EV_MULTIPLICITY 3292#if EV_MULTIPLICITY
3293ecb_cold
1873struct ev_loop * 3294struct ev_loop *
1874ev_default_loop_init (unsigned int flags)
1875#else 3295#else
1876int 3296int
3297#endif
1877ev_default_loop (unsigned int flags) 3298ev_default_loop (unsigned int flags) EV_NOEXCEPT
1878#endif
1879{ 3299{
1880 if (!ev_default_loop_ptr) 3300 if (!ev_default_loop_ptr)
1881 { 3301 {
1882#if EV_MULTIPLICITY 3302#if EV_MULTIPLICITY
1883 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 3303 EV_P = ev_default_loop_ptr = &default_loop_struct;
1884#else 3304#else
1885 ev_default_loop_ptr = 1; 3305 ev_default_loop_ptr = 1;
1886#endif 3306#endif
1887 3307
1888 loop_init (EV_A_ flags); 3308 loop_init (EV_A_ flags);
1889 3309
1890 if (ev_backend (EV_A)) 3310 if (ev_backend (EV_A))
1891 { 3311 {
1892#ifndef _WIN32 3312#if EV_CHILD_ENABLE
1893 ev_signal_init (&childev, childcb, SIGCHLD); 3313 ev_signal_init (&childev, childcb, SIGCHLD);
1894 ev_set_priority (&childev, EV_MAXPRI); 3314 ev_set_priority (&childev, EV_MAXPRI);
1895 ev_signal_start (EV_A_ &childev); 3315 ev_signal_start (EV_A_ &childev);
1896 ev_unref (EV_A); /* child watcher should not keep loop alive */ 3316 ev_unref (EV_A); /* child watcher should not keep loop alive */
1897#endif 3317#endif
… …
1902 3322
1903 return ev_default_loop_ptr; 3323 return ev_default_loop_ptr;
1904} 3324}
1905 3325
1906void 3326void
1907ev_default_destroy (void) 3327ev_loop_fork (EV_P) EV_NOEXCEPT
1908{ 3328{
1909#if EV_MULTIPLICITY 3329 postfork = 1;
1910 struct ev_loop *loop = ev_default_loop_ptr;
1911#endif
1912
1913 ev_default_loop_ptr = 0;
1914
1915#ifndef _WIN32
1916 ev_ref (EV_A); /* child watcher */
1917 ev_signal_stop (EV_A_ &childev);
1918#endif
1919
1920 loop_destroy (EV_A);
1921}
1922
1923void
1924ev_default_fork (void)
1925{
1926#if EV_MULTIPLICITY
1927 struct ev_loop *loop = ev_default_loop_ptr;
1928#endif
1929
1930 postfork = 1; /* must be in line with ev_loop_fork */
1931} 3330}
1932 3331
1933/*****************************************************************************/ 3332/*****************************************************************************/
1934 3333
1935void 3334void
… …
1937{ 3336{
1938 EV_CB_INVOKE ((W)w, revents); 3337 EV_CB_INVOKE ((W)w, revents);
1939} 3338}
1940 3339
1941unsigned int 3340unsigned int
1942ev_pending_count (EV_P) 3341ev_pending_count (EV_P) EV_NOEXCEPT
1943{ 3342{
1944 int pri; 3343 int pri;
1945 unsigned int count = 0; 3344 unsigned int count = 0;
1946 3345
1947 for (pri = NUMPRI; pri--; ) 3346 for (pri = NUMPRI; pri--; )
1948 count += pendingcnt [pri]; 3347 count += pendingcnt [pri];
1949 3348
1950 return count; 3349 return count;
1951} 3350}
1952 3351
1953void noinline 3352ecb_noinline
3353void
1954ev_invoke_pending (EV_P) 3354ev_invoke_pending (EV_P)
1955{ 3355{
1956 int pri; 3356 pendingpri = NUMPRI;
1957 3357
1958 for (pri = NUMPRI; pri--; ) 3358 do
3359 {
3360 --pendingpri;
3361
3362 /* pendingpri possibly gets modified in the inner loop */
1959 while (pendingcnt [pri]) 3363 while (pendingcnt [pendingpri])
1960 { 3364 {
1961 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3365 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
1962 3366
1963 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1964 /* ^ this is no longer true, as pending_w could be here */
1965
1966 p->w->pending = 0; 3367 p->w->pending = 0;
1967 EV_CB_INVOKE (p->w, p->events); 3368 EV_CB_INVOKE (p->w, p->events);
1968 EV_FREQUENT_CHECK; 3369 EV_FREQUENT_CHECK;
1969 } 3370 }
3371 }
3372 while (pendingpri);
1970} 3373}
1971 3374
1972#if EV_IDLE_ENABLE 3375#if EV_IDLE_ENABLE
1973/* make idle watchers pending. this handles the "call-idle */ 3376/* make idle watchers pending. this handles the "call-idle */
1974/* only when higher priorities are idle" logic */ 3377/* only when higher priorities are idle" logic */
1975inline_size void 3378inline_size void
1976idle_reify (EV_P) 3379idle_reify (EV_P)
1977{ 3380{
1978 if (expect_false (idleall)) 3381 if (ecb_expect_false (idleall))
1979 { 3382 {
1980 int pri; 3383 int pri;
1981 3384
1982 for (pri = NUMPRI; pri--; ) 3385 for (pri = NUMPRI; pri--; )
1983 { 3386 {
… …
2026 EV_FREQUENT_CHECK; 3429 EV_FREQUENT_CHECK;
2027 feed_reverse (EV_A_ (W)w); 3430 feed_reverse (EV_A_ (W)w);
2028 } 3431 }
2029 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 3432 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
2030 3433
2031 feed_reverse_done (EV_A_ EV_TIMEOUT); 3434 feed_reverse_done (EV_A_ EV_TIMER);
2032 } 3435 }
2033} 3436}
2034 3437
2035#if EV_PERIODIC_ENABLE 3438#if EV_PERIODIC_ENABLE
3439
3440ecb_noinline
3441static void
3442periodic_recalc (EV_P_ ev_periodic *w)
3443{
3444 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3445 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3446
3447 /* the above almost always errs on the low side */
3448 while (at <= ev_rt_now)
3449 {
3450 ev_tstamp nat = at + w->interval;
3451
3452 /* when resolution fails us, we use ev_rt_now */
3453 if (ecb_expect_false (nat == at))
3454 {
3455 at = ev_rt_now;
3456 break;
3457 }
3458
3459 at = nat;
3460 }
3461
3462 ev_at (w) = at;
3463}
3464
2036/* make periodics pending */ 3465/* make periodics pending */
2037inline_size void 3466inline_size void
2038periodics_reify (EV_P) 3467periodics_reify (EV_P)
2039{ 3468{
2040 EV_FREQUENT_CHECK; 3469 EV_FREQUENT_CHECK;
2041 3470
2042 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3471 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2043 { 3472 {
2044 int feed_count = 0;
2045
2046 do 3473 do
2047 { 3474 {
2048 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3475 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2049 3476
2050 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3477 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2059 ANHE_at_cache (periodics [HEAP0]); 3486 ANHE_at_cache (periodics [HEAP0]);
2060 downheap (periodics, periodiccnt, HEAP0); 3487 downheap (periodics, periodiccnt, HEAP0);
2061 } 3488 }
2062 else if (w->interval) 3489 else if (w->interval)
2063 { 3490 {
2064 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3491 periodic_recalc (EV_A_ w);
2065 /* if next trigger time is not sufficiently in the future, put it there */
2066 /* this might happen because of floating point inexactness */
2067 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2068 {
2069 ev_at (w) += w->interval;
2070
2071 /* if interval is unreasonably low we might still have a time in the past */
2072 /* so correct this. this will make the periodic very inexact, but the user */
2073 /* has effectively asked to get triggered more often than possible */
2074 if (ev_at (w) < ev_rt_now)
2075 ev_at (w) = ev_rt_now;
2076 }
2077
2078 ANHE_at_cache (periodics [HEAP0]); 3492 ANHE_at_cache (periodics [HEAP0]);
2079 downheap (periodics, periodiccnt, HEAP0); 3493 downheap (periodics, periodiccnt, HEAP0);
2080 } 3494 }
2081 else 3495 else
2082 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3496 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2089 feed_reverse_done (EV_A_ EV_PERIODIC); 3503 feed_reverse_done (EV_A_ EV_PERIODIC);
2090 } 3504 }
2091} 3505}
2092 3506
2093/* simply recalculate all periodics */ 3507/* simply recalculate all periodics */
2094/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 3508/* TODO: maybe ensure that at least one event happens when jumping forward? */
2095static void noinline 3509ecb_noinline ecb_cold
3510static void
2096periodics_reschedule (EV_P) 3511periodics_reschedule (EV_P)
2097{ 3512{
2098 int i; 3513 int i;
2099 3514
2100 /* adjust periodics after time jump */ 3515 /* adjust periodics after time jump */
… …
2103 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3518 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2104 3519
2105 if (w->reschedule_cb) 3520 if (w->reschedule_cb)
2106 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3521 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2107 else if (w->interval) 3522 else if (w->interval)
2108 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3523 periodic_recalc (EV_A_ w);
2109 3524
2110 ANHE_at_cache (periodics [i]); 3525 ANHE_at_cache (periodics [i]);
2111 } 3526 }
2112 3527
2113 reheap (periodics, periodiccnt); 3528 reheap (periodics, periodiccnt);
2114} 3529}
2115#endif 3530#endif
2116 3531
2117/* adjust all timers by a given offset */ 3532/* adjust all timers by a given offset */
2118static void noinline 3533ecb_noinline ecb_cold
3534static void
2119timers_reschedule (EV_P_ ev_tstamp adjust) 3535timers_reschedule (EV_P_ ev_tstamp adjust)
2120{ 3536{
2121 int i; 3537 int i;
2122 3538
2123 for (i = 0; i < timercnt; ++i) 3539 for (i = 0; i < timercnt; ++i)
… …
2127 ANHE_at_cache (*he); 3543 ANHE_at_cache (*he);
2128 } 3544 }
2129} 3545}
2130 3546
2131/* fetch new monotonic and realtime times from the kernel */ 3547/* fetch new monotonic and realtime times from the kernel */
2132/* also detetc if there was a timejump, and act accordingly */ 3548/* also detect if there was a timejump, and act accordingly */
2133inline_speed void 3549inline_speed void
2134time_update (EV_P_ ev_tstamp max_block) 3550time_update (EV_P_ ev_tstamp max_block)
2135{ 3551{
2136#if EV_USE_MONOTONIC 3552#if EV_USE_MONOTONIC
2137 if (expect_true (have_monotonic)) 3553 if (ecb_expect_true (have_monotonic))
2138 { 3554 {
2139 int i; 3555 int i;
2140 ev_tstamp odiff = rtmn_diff; 3556 ev_tstamp odiff = rtmn_diff;
2141 3557
2142 mn_now = get_clock (); 3558 mn_now = get_clock ();
2143 3559
2144 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3560 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
2145 /* interpolate in the meantime */ 3561 /* interpolate in the meantime */
2146 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 3562 if (ecb_expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
2147 { 3563 {
2148 ev_rt_now = rtmn_diff + mn_now; 3564 ev_rt_now = rtmn_diff + mn_now;
2149 return; 3565 return;
2150 } 3566 }
2151 3567
… …
2160 * doesn't hurt either as we only do this on time-jumps or 3576 * doesn't hurt either as we only do this on time-jumps or
2161 * in the unlikely event of having been preempted here. 3577 * in the unlikely event of having been preempted here.
2162 */ 3578 */
2163 for (i = 4; --i; ) 3579 for (i = 4; --i; )
2164 { 3580 {
3581 ev_tstamp diff;
2165 rtmn_diff = ev_rt_now - mn_now; 3582 rtmn_diff = ev_rt_now - mn_now;
2166 3583
3584 diff = odiff - rtmn_diff;
3585
2167 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3586 if (ecb_expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2168 return; /* all is well */ 3587 return; /* all is well */
2169 3588
2170 ev_rt_now = ev_time (); 3589 ev_rt_now = ev_time ();
2171 mn_now = get_clock (); 3590 mn_now = get_clock ();
2172 now_floor = mn_now; 3591 now_floor = mn_now;
… …
2181 else 3600 else
2182#endif 3601#endif
2183 { 3602 {
2184 ev_rt_now = ev_time (); 3603 ev_rt_now = ev_time ();
2185 3604
2186 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 3605 if (ecb_expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
2187 { 3606 {
2188 /* adjust timers. this is easy, as the offset is the same for all of them */ 3607 /* adjust timers. this is easy, as the offset is the same for all of them */
2189 timers_reschedule (EV_A_ ev_rt_now - mn_now); 3608 timers_reschedule (EV_A_ ev_rt_now - mn_now);
2190#if EV_PERIODIC_ENABLE 3609#if EV_PERIODIC_ENABLE
2191 periodics_reschedule (EV_A); 3610 periodics_reschedule (EV_A);
… …
2194 3613
2195 mn_now = ev_rt_now; 3614 mn_now = ev_rt_now;
2196 } 3615 }
2197} 3616}
2198 3617
2199void 3618int
2200ev_loop (EV_P_ int flags) 3619ev_run (EV_P_ int flags)
2201{ 3620{
2202#if EV_MINIMAL < 2 3621#if EV_FEATURE_API
2203 ++loop_depth; 3622 ++loop_depth;
2204#endif 3623#endif
2205 3624
2206 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 3625 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2207 3626
2208 loop_done = EVUNLOOP_CANCEL; 3627 loop_done = EVBREAK_CANCEL;
2209 3628
2210 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 3629 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2211 3630
2212 do 3631 do
2213 { 3632 {
2214#if EV_VERIFY >= 2 3633#if EV_VERIFY >= 2
2215 ev_loop_verify (EV_A); 3634 ev_verify (EV_A);
2216#endif 3635#endif
2217 3636
2218#ifndef _WIN32 3637#ifndef _WIN32
2219 if (expect_false (curpid)) /* penalise the forking check even more */ 3638 if (ecb_expect_false (curpid)) /* penalise the forking check even more */
2220 if (expect_false (getpid () != curpid)) 3639 if (ecb_expect_false (getpid () != curpid))
2221 { 3640 {
2222 curpid = getpid (); 3641 curpid = getpid ();
2223 postfork = 1; 3642 postfork = 1;
2224 } 3643 }
2225#endif 3644#endif
2226 3645
2227#if EV_FORK_ENABLE 3646#if EV_FORK_ENABLE
2228 /* we might have forked, so queue fork handlers */ 3647 /* we might have forked, so queue fork handlers */
2229 if (expect_false (postfork)) 3648 if (ecb_expect_false (postfork))
2230 if (forkcnt) 3649 if (forkcnt)
2231 { 3650 {
2232 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3651 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2233 EV_INVOKE_PENDING; 3652 EV_INVOKE_PENDING;
2234 } 3653 }
2235#endif 3654#endif
2236 3655
3656#if EV_PREPARE_ENABLE
2237 /* queue prepare watchers (and execute them) */ 3657 /* queue prepare watchers (and execute them) */
2238 if (expect_false (preparecnt)) 3658 if (ecb_expect_false (preparecnt))
2239 { 3659 {
2240 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3660 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2241 EV_INVOKE_PENDING; 3661 EV_INVOKE_PENDING;
2242 } 3662 }
3663#endif
2243 3664
2244 if (expect_false (loop_done)) 3665 if (ecb_expect_false (loop_done))
2245 break; 3666 break;
2246 3667
2247 /* we might have forked, so reify kernel state if necessary */ 3668 /* we might have forked, so reify kernel state if necessary */
2248 if (expect_false (postfork)) 3669 if (ecb_expect_false (postfork))
2249 loop_fork (EV_A); 3670 loop_fork (EV_A);
2250 3671
2251 /* update fd-related kernel structures */ 3672 /* update fd-related kernel structures */
2252 fd_reify (EV_A); 3673 fd_reify (EV_A);
2253 3674
2254 /* calculate blocking time */ 3675 /* calculate blocking time */
2255 { 3676 {
2256 ev_tstamp waittime = 0.; 3677 ev_tstamp waittime = 0.;
2257 ev_tstamp sleeptime = 0.; 3678 ev_tstamp sleeptime = 0.;
2258 3679
3680 /* remember old timestamp for io_blocktime calculation */
3681 ev_tstamp prev_mn_now = mn_now;
3682
3683 /* update time to cancel out callback processing overhead */
3684 time_update (EV_A_ 1e100);
3685
3686 /* from now on, we want a pipe-wake-up */
3687 pipe_write_wanted = 1;
3688
3689 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3690
2259 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3691 if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2260 { 3692 {
2261 /* remember old timestamp for io_blocktime calculation */
2262 ev_tstamp prev_mn_now = mn_now;
2263
2264 /* update time to cancel out callback processing overhead */
2265 time_update (EV_A_ 1e100);
2266
2267 waittime = MAX_BLOCKTIME; 3693 waittime = MAX_BLOCKTIME;
2268 3694
2269 if (timercnt) 3695 if (timercnt)
2270 { 3696 {
2271 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3697 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2272 if (waittime > to) waittime = to; 3698 if (waittime > to) waittime = to;
2273 } 3699 }
2274 3700
2275#if EV_PERIODIC_ENABLE 3701#if EV_PERIODIC_ENABLE
2276 if (periodiccnt) 3702 if (periodiccnt)
2277 { 3703 {
2278 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3704 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2279 if (waittime > to) waittime = to; 3705 if (waittime > to) waittime = to;
2280 } 3706 }
2281#endif 3707#endif
2282 3708
2283 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3709 /* don't let timeouts decrease the waittime below timeout_blocktime */
2284 if (expect_false (waittime < timeout_blocktime)) 3710 if (ecb_expect_false (waittime < timeout_blocktime))
2285 waittime = timeout_blocktime; 3711 waittime = timeout_blocktime;
2286 3712
3713 /* at this point, we NEED to wait, so we have to ensure */
3714 /* to pass a minimum nonzero value to the backend */
3715 if (ecb_expect_false (waittime < backend_mintime))
3716 waittime = backend_mintime;
3717
2287 /* extra check because io_blocktime is commonly 0 */ 3718 /* extra check because io_blocktime is commonly 0 */
2288 if (expect_false (io_blocktime)) 3719 if (ecb_expect_false (io_blocktime))
2289 { 3720 {
2290 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3721 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2291 3722
2292 if (sleeptime > waittime - backend_fudge) 3723 if (sleeptime > waittime - backend_mintime)
2293 sleeptime = waittime - backend_fudge; 3724 sleeptime = waittime - backend_mintime;
2294 3725
2295 if (expect_true (sleeptime > 0.)) 3726 if (ecb_expect_true (sleeptime > 0.))
2296 { 3727 {
2297 ev_sleep (sleeptime); 3728 ev_sleep (sleeptime);
2298 waittime -= sleeptime; 3729 waittime -= sleeptime;
2299 } 3730 }
2300 } 3731 }
2301 } 3732 }
2302 3733
2303#if EV_MINIMAL < 2 3734#if EV_FEATURE_API
2304 ++loop_count; 3735 ++loop_count;
2305#endif 3736#endif
2306 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3737 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2307 backend_poll (EV_A_ waittime); 3738 backend_poll (EV_A_ waittime);
2308 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 3739 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3740
3741 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3742
3743 ECB_MEMORY_FENCE_ACQUIRE;
3744 if (pipe_write_skipped)
3745 {
3746 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3747 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3748 }
2309 3749
2310 /* update ev_rt_now, do magic */ 3750 /* update ev_rt_now, do magic */
2311 time_update (EV_A_ waittime + sleeptime); 3751 time_update (EV_A_ waittime + sleeptime);
2312 } 3752 }
2313 3753
… …
2320#if EV_IDLE_ENABLE 3760#if EV_IDLE_ENABLE
2321 /* queue idle watchers unless other events are pending */ 3761 /* queue idle watchers unless other events are pending */
2322 idle_reify (EV_A); 3762 idle_reify (EV_A);
2323#endif 3763#endif
2324 3764
3765#if EV_CHECK_ENABLE
2325 /* queue check watchers, to be executed first */ 3766 /* queue check watchers, to be executed first */
2326 if (expect_false (checkcnt)) 3767 if (ecb_expect_false (checkcnt))
2327 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3768 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3769#endif
2328 3770
2329 EV_INVOKE_PENDING; 3771 EV_INVOKE_PENDING;
2330 } 3772 }
2331 while (expect_true ( 3773 while (ecb_expect_true (
2332 activecnt 3774 activecnt
2333 && !loop_done 3775 && !loop_done
2334 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3776 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2335 )); 3777 ));
2336 3778
2337 if (loop_done == EVUNLOOP_ONE) 3779 if (loop_done == EVBREAK_ONE)
2338 loop_done = EVUNLOOP_CANCEL; 3780 loop_done = EVBREAK_CANCEL;
2339 3781
2340#if EV_MINIMAL < 2 3782#if EV_FEATURE_API
2341 --loop_depth; 3783 --loop_depth;
2342#endif 3784#endif
2343}
2344 3785
3786 return activecnt;
3787}
3788
2345void 3789void
2346ev_unloop (EV_P_ int how) 3790ev_break (EV_P_ int how) EV_NOEXCEPT
2347{ 3791{
2348 loop_done = how; 3792 loop_done = how;
2349} 3793}
2350 3794
2351void 3795void
2352ev_ref (EV_P) 3796ev_ref (EV_P) EV_NOEXCEPT
2353{ 3797{
2354 ++activecnt; 3798 ++activecnt;
2355} 3799}
2356 3800
2357void 3801void
2358ev_unref (EV_P) 3802ev_unref (EV_P) EV_NOEXCEPT
2359{ 3803{
2360 --activecnt; 3804 --activecnt;
2361} 3805}
2362 3806
2363void 3807void
2364ev_now_update (EV_P) 3808ev_now_update (EV_P) EV_NOEXCEPT
2365{ 3809{
2366 time_update (EV_A_ 1e100); 3810 time_update (EV_A_ 1e100);
2367} 3811}
2368 3812
2369void 3813void
2370ev_suspend (EV_P) 3814ev_suspend (EV_P) EV_NOEXCEPT
2371{ 3815{
2372 ev_now_update (EV_A); 3816 ev_now_update (EV_A);
2373} 3817}
2374 3818
2375void 3819void
2376ev_resume (EV_P) 3820ev_resume (EV_P) EV_NOEXCEPT
2377{ 3821{
2378 ev_tstamp mn_prev = mn_now; 3822 ev_tstamp mn_prev = mn_now;
2379 3823
2380 ev_now_update (EV_A); 3824 ev_now_update (EV_A);
2381 timers_reschedule (EV_A_ mn_now - mn_prev); 3825 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2398inline_size void 3842inline_size void
2399wlist_del (WL *head, WL elem) 3843wlist_del (WL *head, WL elem)
2400{ 3844{
2401 while (*head) 3845 while (*head)
2402 { 3846 {
2403 if (*head == elem) 3847 if (ecb_expect_true (*head == elem))
2404 { 3848 {
2405 *head = elem->next; 3849 *head = elem->next;
2406 return; 3850 break;
2407 } 3851 }
2408 3852
2409 head = &(*head)->next; 3853 head = &(*head)->next;
2410 } 3854 }
2411} 3855}
… …
2420 w->pending = 0; 3864 w->pending = 0;
2421 } 3865 }
2422} 3866}
2423 3867
2424int 3868int
2425ev_clear_pending (EV_P_ void *w) 3869ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
2426{ 3870{
2427 W w_ = (W)w; 3871 W w_ = (W)w;
2428 int pending = w_->pending; 3872 int pending = w_->pending;
2429 3873
2430 if (expect_true (pending)) 3874 if (ecb_expect_true (pending))
2431 { 3875 {
2432 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 3876 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2433 p->w = (W)&pending_w; 3877 p->w = (W)&pending_w;
2434 w_->pending = 0; 3878 w_->pending = 0;
2435 return p->events; 3879 return p->events;
… …
2462 w->active = 0; 3906 w->active = 0;
2463} 3907}
2464 3908
2465/*****************************************************************************/ 3909/*****************************************************************************/
2466 3910
2467void noinline 3911ecb_noinline
3912void
2468ev_io_start (EV_P_ ev_io *w) 3913ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
2469{ 3914{
2470 int fd = w->fd; 3915 int fd = w->fd;
2471 3916
2472 if (expect_false (ev_is_active (w))) 3917 if (ecb_expect_false (ev_is_active (w)))
2473 return; 3918 return;
2474 3919
2475 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 3920 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2476 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 3921 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2477 3922
3923#if EV_VERIFY >= 2
3924 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
3925#endif
2478 EV_FREQUENT_CHECK; 3926 EV_FREQUENT_CHECK;
2479 3927
2480 ev_start (EV_A_ (W)w, 1); 3928 ev_start (EV_A_ (W)w, 1);
2481 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3929 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
2482 wlist_add (&anfds[fd].head, (WL)w); 3930 wlist_add (&anfds[fd].head, (WL)w);
3931
3932 /* common bug, apparently */
3933 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
2483 3934
2484 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3935 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2485 w->events &= ~EV__IOFDSET; 3936 w->events &= ~EV__IOFDSET;
2486 3937
2487 EV_FREQUENT_CHECK; 3938 EV_FREQUENT_CHECK;
2488} 3939}
2489 3940
2490void noinline 3941ecb_noinline
3942void
2491ev_io_stop (EV_P_ ev_io *w) 3943ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
2492{ 3944{
2493 clear_pending (EV_A_ (W)w); 3945 clear_pending (EV_A_ (W)w);
2494 if (expect_false (!ev_is_active (w))) 3946 if (ecb_expect_false (!ev_is_active (w)))
2495 return; 3947 return;
2496 3948
2497 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 3949 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2498 3950
3951#if EV_VERIFY >= 2
3952 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
3953#endif
2499 EV_FREQUENT_CHECK; 3954 EV_FREQUENT_CHECK;
2500 3955
2501 wlist_del (&anfds[w->fd].head, (WL)w); 3956 wlist_del (&anfds[w->fd].head, (WL)w);
2502 ev_stop (EV_A_ (W)w); 3957 ev_stop (EV_A_ (W)w);
2503 3958
2504 fd_change (EV_A_ w->fd, 1); 3959 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2505 3960
2506 EV_FREQUENT_CHECK; 3961 EV_FREQUENT_CHECK;
2507} 3962}
2508 3963
2509void noinline 3964ecb_noinline
3965void
2510ev_timer_start (EV_P_ ev_timer *w) 3966ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
2511{ 3967{
2512 if (expect_false (ev_is_active (w))) 3968 if (ecb_expect_false (ev_is_active (w)))
2513 return; 3969 return;
2514 3970
2515 ev_at (w) += mn_now; 3971 ev_at (w) += mn_now;
2516 3972
2517 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 3973 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2518 3974
2519 EV_FREQUENT_CHECK; 3975 EV_FREQUENT_CHECK;
2520 3976
2521 ++timercnt; 3977 ++timercnt;
2522 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 3978 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
2523 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 3979 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
2524 ANHE_w (timers [ev_active (w)]) = (WT)w; 3980 ANHE_w (timers [ev_active (w)]) = (WT)w;
2525 ANHE_at_cache (timers [ev_active (w)]); 3981 ANHE_at_cache (timers [ev_active (w)]);
2526 upheap (timers, ev_active (w)); 3982 upheap (timers, ev_active (w));
2527 3983
2528 EV_FREQUENT_CHECK; 3984 EV_FREQUENT_CHECK;
2529 3985
2530 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3986 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2531} 3987}
2532 3988
2533void noinline 3989ecb_noinline
3990void
2534ev_timer_stop (EV_P_ ev_timer *w) 3991ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
2535{ 3992{
2536 clear_pending (EV_A_ (W)w); 3993 clear_pending (EV_A_ (W)w);
2537 if (expect_false (!ev_is_active (w))) 3994 if (ecb_expect_false (!ev_is_active (w)))
2538 return; 3995 return;
2539 3996
2540 EV_FREQUENT_CHECK; 3997 EV_FREQUENT_CHECK;
2541 3998
2542 { 3999 {
… …
2544 4001
2545 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 4002 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2546 4003
2547 --timercnt; 4004 --timercnt;
2548 4005
2549 if (expect_true (active < timercnt + HEAP0)) 4006 if (ecb_expect_true (active < timercnt + HEAP0))
2550 { 4007 {
2551 timers [active] = timers [timercnt + HEAP0]; 4008 timers [active] = timers [timercnt + HEAP0];
2552 adjustheap (timers, timercnt, active); 4009 adjustheap (timers, timercnt, active);
2553 } 4010 }
2554 } 4011 }
2555 4012
2556 EV_FREQUENT_CHECK;
2557
2558 ev_at (w) -= mn_now; 4013 ev_at (w) -= mn_now;
2559 4014
2560 ev_stop (EV_A_ (W)w); 4015 ev_stop (EV_A_ (W)w);
2561}
2562 4016
2563void noinline 4017 EV_FREQUENT_CHECK;
4018}
4019
4020ecb_noinline
4021void
2564ev_timer_again (EV_P_ ev_timer *w) 4022ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
2565{ 4023{
2566 EV_FREQUENT_CHECK; 4024 EV_FREQUENT_CHECK;
4025
4026 clear_pending (EV_A_ (W)w);
2567 4027
2568 if (ev_is_active (w)) 4028 if (ev_is_active (w))
2569 { 4029 {
2570 if (w->repeat) 4030 if (w->repeat)
2571 { 4031 {
… …
2584 4044
2585 EV_FREQUENT_CHECK; 4045 EV_FREQUENT_CHECK;
2586} 4046}
2587 4047
2588ev_tstamp 4048ev_tstamp
2589ev_timer_remaining (EV_P_ ev_timer *w) 4049ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
2590{ 4050{
2591 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4051 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2592} 4052}
2593 4053
2594#if EV_PERIODIC_ENABLE 4054#if EV_PERIODIC_ENABLE
2595void noinline 4055ecb_noinline
4056void
2596ev_periodic_start (EV_P_ ev_periodic *w) 4057ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
2597{ 4058{
2598 if (expect_false (ev_is_active (w))) 4059 if (ecb_expect_false (ev_is_active (w)))
2599 return; 4060 return;
2600 4061
2601 if (w->reschedule_cb) 4062 if (w->reschedule_cb)
2602 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4063 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2603 else if (w->interval) 4064 else if (w->interval)
2604 { 4065 {
2605 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 4066 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2606 /* this formula differs from the one in periodic_reify because we do not always round up */ 4067 periodic_recalc (EV_A_ w);
2607 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2608 } 4068 }
2609 else 4069 else
2610 ev_at (w) = w->offset; 4070 ev_at (w) = w->offset;
2611 4071
2612 EV_FREQUENT_CHECK; 4072 EV_FREQUENT_CHECK;
2613 4073
2614 ++periodiccnt; 4074 ++periodiccnt;
2615 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4075 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2616 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4076 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
2617 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4077 ANHE_w (periodics [ev_active (w)]) = (WT)w;
2618 ANHE_at_cache (periodics [ev_active (w)]); 4078 ANHE_at_cache (periodics [ev_active (w)]);
2619 upheap (periodics, ev_active (w)); 4079 upheap (periodics, ev_active (w));
2620 4080
2621 EV_FREQUENT_CHECK; 4081 EV_FREQUENT_CHECK;
2622 4082
2623 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4083 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2624} 4084}
2625 4085
2626void noinline 4086ecb_noinline
4087void
2627ev_periodic_stop (EV_P_ ev_periodic *w) 4088ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
2628{ 4089{
2629 clear_pending (EV_A_ (W)w); 4090 clear_pending (EV_A_ (W)w);
2630 if (expect_false (!ev_is_active (w))) 4091 if (ecb_expect_false (!ev_is_active (w)))
2631 return; 4092 return;
2632 4093
2633 EV_FREQUENT_CHECK; 4094 EV_FREQUENT_CHECK;
2634 4095
2635 { 4096 {
… …
2637 4098
2638 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 4099 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2639 4100
2640 --periodiccnt; 4101 --periodiccnt;
2641 4102
2642 if (expect_true (active < periodiccnt + HEAP0)) 4103 if (ecb_expect_true (active < periodiccnt + HEAP0))
2643 { 4104 {
2644 periodics [active] = periodics [periodiccnt + HEAP0]; 4105 periodics [active] = periodics [periodiccnt + HEAP0];
2645 adjustheap (periodics, periodiccnt, active); 4106 adjustheap (periodics, periodiccnt, active);
2646 } 4107 }
2647 } 4108 }
2648 4109
2649 EV_FREQUENT_CHECK;
2650
2651 ev_stop (EV_A_ (W)w); 4110 ev_stop (EV_A_ (W)w);
2652}
2653 4111
2654void noinline 4112 EV_FREQUENT_CHECK;
4113}
4114
4115ecb_noinline
4116void
2655ev_periodic_again (EV_P_ ev_periodic *w) 4117ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
2656{ 4118{
2657 /* TODO: use adjustheap and recalculation */ 4119 /* TODO: use adjustheap and recalculation */
2658 ev_periodic_stop (EV_A_ w); 4120 ev_periodic_stop (EV_A_ w);
2659 ev_periodic_start (EV_A_ w); 4121 ev_periodic_start (EV_A_ w);
2660} 4122}
… …
2662 4124
2663#ifndef SA_RESTART 4125#ifndef SA_RESTART
2664# define SA_RESTART 0 4126# define SA_RESTART 0
2665#endif 4127#endif
2666 4128
2667void noinline 4129#if EV_SIGNAL_ENABLE
4130
4131ecb_noinline
4132void
2668ev_signal_start (EV_P_ ev_signal *w) 4133ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
2669{ 4134{
4135 if (ecb_expect_false (ev_is_active (w)))
4136 return;
4137
4138 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
4139
2670#if EV_MULTIPLICITY 4140#if EV_MULTIPLICITY
2671 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4141 assert (("libev: a signal must not be attached to two different loops",
2672#endif 4142 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2673 if (expect_false (ev_is_active (w)))
2674 return;
2675 4143
2676 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0)); 4144 signals [w->signum - 1].loop = EV_A;
4145 ECB_MEMORY_FENCE_RELEASE;
4146#endif
2677 4147
2678 EV_FREQUENT_CHECK; 4148 EV_FREQUENT_CHECK;
2679 4149
2680#if EV_USE_SIGNALFD 4150#if EV_USE_SIGNALFD
2681 if (sigfd == -2) 4151 if (sigfd == -2)
… …
2703 sigaddset (&sigfd_set, w->signum); 4173 sigaddset (&sigfd_set, w->signum);
2704 sigprocmask (SIG_BLOCK, &sigfd_set, 0); 4174 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
2705 4175
2706 signalfd (sigfd, &sigfd_set, 0); 4176 signalfd (sigfd, &sigfd_set, 0);
2707 } 4177 }
2708 else
2709#endif
2710 evpipe_init (EV_A);
2711
2712 {
2713#ifndef _WIN32
2714 sigset_t full, prev;
2715 sigfillset (&full);
2716 sigprocmask (SIG_SETMASK, &full, &prev);
2717#endif
2718
2719 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);
2720
2721#ifndef _WIN32
2722# if EV_USE_SIGNALFD
2723 if (sigfd < 0)/*TODO*/
2724# endif 4178#endif
2725 sigdelset (&prev, w->signum);
2726 sigprocmask (SIG_SETMASK, &prev, 0);
2727#endif
2728 }
2729 4179
2730 ev_start (EV_A_ (W)w, 1); 4180 ev_start (EV_A_ (W)w, 1);
2731 wlist_add (&signals [w->signum - 1].head, (WL)w); 4181 wlist_add (&signals [w->signum - 1].head, (WL)w);
2732 4182
2733 if (!((WL)w)->next) 4183 if (!((WL)w)->next)
2734 {
2735#if _WIN32
2736 signal (w->signum, ev_sighandler);
2737#else
2738# if EV_USE_SIGNALFD 4184# if EV_USE_SIGNALFD
2739 if (sigfd < 0) /*TODO*/ 4185 if (sigfd < 0) /*TODO*/
2740# endif 4186# endif
2741 { 4187 {
4188# ifdef _WIN32
4189 evpipe_init (EV_A);
4190
4191 signal (w->signum, ev_sighandler);
4192# else
2742 struct sigaction sa = { }; 4193 struct sigaction sa;
4194
4195 evpipe_init (EV_A);
4196
2743 sa.sa_handler = ev_sighandler; 4197 sa.sa_handler = ev_sighandler;
2744 sigfillset (&sa.sa_mask); 4198 sigfillset (&sa.sa_mask);
2745 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 */
2746 sigaction (w->signum, &sa, 0); 4200 sigaction (w->signum, &sa, 0);
4201
4202 if (origflags & EVFLAG_NOSIGMASK)
4203 {
4204 sigemptyset (&sa.sa_mask);
4205 sigaddset (&sa.sa_mask, w->signum);
4206 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2747 } 4207 }
2748#endif 4208#endif
2749 } 4209 }
2750 4210
2751 EV_FREQUENT_CHECK; 4211 EV_FREQUENT_CHECK;
2752} 4212}
2753 4213
2754void noinline 4214ecb_noinline
4215void
2755ev_signal_stop (EV_P_ ev_signal *w) 4216ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
2756{ 4217{
2757 clear_pending (EV_A_ (W)w); 4218 clear_pending (EV_A_ (W)w);
2758 if (expect_false (!ev_is_active (w))) 4219 if (ecb_expect_false (!ev_is_active (w)))
2759 return; 4220 return;
2760 4221
2761 EV_FREQUENT_CHECK; 4222 EV_FREQUENT_CHECK;
2762 4223
2763 wlist_del (&signals [w->signum - 1].head, (WL)w); 4224 wlist_del (&signals [w->signum - 1].head, (WL)w);
2764 ev_stop (EV_A_ (W)w); 4225 ev_stop (EV_A_ (W)w);
2765 4226
2766 if (!signals [w->signum - 1].head) 4227 if (!signals [w->signum - 1].head)
4228 {
4229#if EV_MULTIPLICITY
4230 signals [w->signum - 1].loop = 0; /* unattach from signal */
4231#endif
2767#if EV_USE_SIGNALFD 4232#if EV_USE_SIGNALFD
2768 if (sigfd >= 0) 4233 if (sigfd >= 0)
2769 { 4234 {
2770 sigprocmask (SIG_UNBLOCK, &sigfd_set, 0);//D 4235 sigset_t ss;
4236
4237 sigemptyset (&ss);
4238 sigaddset (&ss, w->signum);
2771 sigdelset (&sigfd_set, w->signum); 4239 sigdelset (&sigfd_set, w->signum);
4240
2772 signalfd (sigfd, &sigfd_set, 0); 4241 signalfd (sigfd, &sigfd_set, 0);
2773 sigprocmask (SIG_BLOCK, &sigfd_set, 0);//D 4242 sigprocmask (SIG_UNBLOCK, &ss, 0);
2774 /*TODO: maybe unblock signal? */
2775 } 4243 }
2776 else 4244 else
2777#endif 4245#endif
2778 signal (w->signum, SIG_DFL); 4246 signal (w->signum, SIG_DFL);
4247 }
2779 4248
2780 EV_FREQUENT_CHECK; 4249 EV_FREQUENT_CHECK;
2781} 4250}
2782 4251
4252#endif
4253
4254#if EV_CHILD_ENABLE
4255
2783void 4256void
2784ev_child_start (EV_P_ ev_child *w) 4257ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
2785{ 4258{
2786#if EV_MULTIPLICITY 4259#if EV_MULTIPLICITY
2787 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));
2788#endif 4261#endif
2789 if (expect_false (ev_is_active (w))) 4262 if (ecb_expect_false (ev_is_active (w)))
2790 return; 4263 return;
2791 4264
2792 EV_FREQUENT_CHECK; 4265 EV_FREQUENT_CHECK;
2793 4266
2794 ev_start (EV_A_ (W)w, 1); 4267 ev_start (EV_A_ (W)w, 1);
2795 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4268 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2796 4269
2797 EV_FREQUENT_CHECK; 4270 EV_FREQUENT_CHECK;
2798} 4271}
2799 4272
2800void 4273void
2801ev_child_stop (EV_P_ ev_child *w) 4274ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
2802{ 4275{
2803 clear_pending (EV_A_ (W)w); 4276 clear_pending (EV_A_ (W)w);
2804 if (expect_false (!ev_is_active (w))) 4277 if (ecb_expect_false (!ev_is_active (w)))
2805 return; 4278 return;
2806 4279
2807 EV_FREQUENT_CHECK; 4280 EV_FREQUENT_CHECK;
2808 4281
2809 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4282 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2810 ev_stop (EV_A_ (W)w); 4283 ev_stop (EV_A_ (W)w);
2811 4284
2812 EV_FREQUENT_CHECK; 4285 EV_FREQUENT_CHECK;
2813} 4286}
4287
4288#endif
2814 4289
2815#if EV_STAT_ENABLE 4290#if EV_STAT_ENABLE
2816 4291
2817# ifdef _WIN32 4292# ifdef _WIN32
2818# undef lstat 4293# undef lstat
… …
2821 4296
2822#define DEF_STAT_INTERVAL 5.0074891 4297#define DEF_STAT_INTERVAL 5.0074891
2823#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4298#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2824#define MIN_STAT_INTERVAL 0.1074891 4299#define MIN_STAT_INTERVAL 0.1074891
2825 4300
2826static 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);
2827 4302
2828#if EV_USE_INOTIFY 4303#if EV_USE_INOTIFY
2829# define EV_INOTIFY_BUFSIZE 8192
2830 4304
2831static 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
2832infy_add (EV_P_ ev_stat *w) 4310infy_add (EV_P_ ev_stat *w)
2833{ 4311{
2834 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);
2835 4316
2836 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 */
2837 { 4343 }
4344 else
4345 {
4346 /* can't use inotify, continue to stat */
2838 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4347 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2839 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2840 4348
2841 /* monitor some parent directory for speedup hints */ 4349 /* if path is not there, monitor some parent directory for speedup hints */
2842 /* 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, */
2843 /* but an efficiency issue only */ 4351 /* but an efficiency issue only */
2844 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 4352 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2845 { 4353 {
2846 char path [4096]; 4354 char path [4096];
… …
2856 if (!pend || pend == path) 4364 if (!pend || pend == path)
2857 break; 4365 break;
2858 4366
2859 *pend = 0; 4367 *pend = 0;
2860 w->wd = inotify_add_watch (fs_fd, path, mask); 4368 w->wd = inotify_add_watch (fs_fd, path, mask);
2861 } 4369 }
2862 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 4370 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2863 } 4371 }
2864 } 4372 }
2865 4373
2866 if (w->wd >= 0) 4374 if (w->wd >= 0)
2867 {
2868 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);
2869 4376
2870 /* now local changes will be tracked by inotify, but remote changes won't */ 4377 /* now re-arm timer, if required */
2871 /* unless the filesystem it known to be local, we therefore still poll */ 4378 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2872 /* also do poll on <2.6.25, but with normal frequency */
2873 struct statfs sfs;
2874
2875 if (fs_2625 && !statfs (w->path, &sfs))
2876 if (sfs.f_type == 0x1373 /* devfs */
2877 || sfs.f_type == 0xEF53 /* ext2/3 */
2878 || sfs.f_type == 0x3153464a /* jfs */
2879 || sfs.f_type == 0x52654973 /* reiser3 */
2880 || sfs.f_type == 0x01021994 /* tempfs */
2881 || sfs.f_type == 0x58465342 /* xfs */)
2882 return;
2883
2884 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2885 ev_timer_again (EV_A_ &w->timer); 4379 ev_timer_again (EV_A_ &w->timer);
2886 } 4380 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2887} 4381}
2888 4382
2889static void noinline 4383ecb_noinline
4384static void
2890infy_del (EV_P_ ev_stat *w) 4385infy_del (EV_P_ ev_stat *w)
2891{ 4386{
2892 int slot; 4387 int slot;
2893 int wd = w->wd; 4388 int wd = w->wd;
2894 4389
2895 if (wd < 0) 4390 if (wd < 0)
2896 return; 4391 return;
2897 4392
2898 w->wd = -2; 4393 w->wd = -2;
2899 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 4394 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2900 wlist_del (&fs_hash [slot].head, (WL)w); 4395 wlist_del (&fs_hash [slot].head, (WL)w);
2901 4396
2902 /* remove this watcher, if others are watching it, they will rearm */ 4397 /* remove this watcher, if others are watching it, they will rearm */
2903 inotify_rm_watch (fs_fd, wd); 4398 inotify_rm_watch (fs_fd, wd);
2904} 4399}
2905 4400
2906static void noinline 4401ecb_noinline
4402static void
2907infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4403infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2908{ 4404{
2909 if (slot < 0) 4405 if (slot < 0)
2910 /* overflow, need to check for all hash slots */ 4406 /* overflow, need to check for all hash slots */
2911 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4407 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2912 infy_wd (EV_A_ slot, wd, ev); 4408 infy_wd (EV_A_ slot, wd, ev);
2913 else 4409 else
2914 { 4410 {
2915 WL w_; 4411 WL w_;
2916 4412
2917 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 4413 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2918 { 4414 {
2919 ev_stat *w = (ev_stat *)w_; 4415 ev_stat *w = (ev_stat *)w_;
2920 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 */
2921 4417
2922 if (w->wd == wd || wd == -1) 4418 if (w->wd == wd || wd == -1)
2923 { 4419 {
2924 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 4420 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2925 { 4421 {
2926 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);
2927 w->wd = -1; 4423 w->wd = -1;
2928 infy_add (EV_A_ w); /* re-add, no matter what */ 4424 infy_add (EV_A_ w); /* re-add, no matter what */
2929 } 4425 }
2930 4426
2931 stat_timer_cb (EV_A_ &w->timer, 0); 4427 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2936 4432
2937static void 4433static void
2938infy_cb (EV_P_ ev_io *w, int revents) 4434infy_cb (EV_P_ ev_io *w, int revents)
2939{ 4435{
2940 char buf [EV_INOTIFY_BUFSIZE]; 4436 char buf [EV_INOTIFY_BUFSIZE];
2941 struct inotify_event *ev = (struct inotify_event *)buf;
2942 int ofs; 4437 int ofs;
2943 int len = read (fs_fd, buf, sizeof (buf)); 4438 int len = read (fs_fd, buf, sizeof (buf));
2944 4439
2945 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);
2946 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 }
2947} 4446}
2948 4447
2949inline_size void 4448inline_size ecb_cold
4449void
2950check_2625 (EV_P) 4450ev_check_2625 (EV_P)
2951{ 4451{
2952 /* kernels < 2.6.25 are borked 4452 /* kernels < 2.6.25 are borked
2953 * 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
2954 */ 4454 */
2955 struct utsname buf; 4455 if (ev_linux_version () < 0x020619)
2956 int major, minor, micro;
2957
2958 if (uname (&buf))
2959 return; 4456 return;
2960 4457
2961 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2962 return;
2963
2964 if (major < 2
2965 || (major == 2 && minor < 6)
2966 || (major == 2 && minor == 6 && micro < 25))
2967 return;
2968
2969 fs_2625 = 1; 4458 fs_2625 = 1;
4459}
4460
4461inline_size int
4462infy_newfd (void)
4463{
4464#if defined IN_CLOEXEC && defined IN_NONBLOCK
4465 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
4466 if (fd >= 0)
4467 return fd;
4468#endif
4469 return inotify_init ();
2970} 4470}
2971 4471
2972inline_size void 4472inline_size void
2973infy_init (EV_P) 4473infy_init (EV_P)
2974{ 4474{
2975 if (fs_fd != -2) 4475 if (fs_fd != -2)
2976 return; 4476 return;
2977 4477
2978 fs_fd = -1; 4478 fs_fd = -1;
2979 4479
2980 check_2625 (EV_A); 4480 ev_check_2625 (EV_A);
2981 4481
2982 fs_fd = inotify_init (); 4482 fs_fd = infy_newfd ();
2983 4483
2984 if (fs_fd >= 0) 4484 if (fs_fd >= 0)
2985 { 4485 {
4486 fd_intern (fs_fd);
2986 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 4487 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2987 ev_set_priority (&fs_w, EV_MAXPRI); 4488 ev_set_priority (&fs_w, EV_MAXPRI);
2988 ev_io_start (EV_A_ &fs_w); 4489 ev_io_start (EV_A_ &fs_w);
4490 ev_unref (EV_A);
2989 } 4491 }
2990} 4492}
2991 4493
2992inline_size void 4494inline_size void
2993infy_fork (EV_P) 4495infy_fork (EV_P)
… …
2995 int slot; 4497 int slot;
2996 4498
2997 if (fs_fd < 0) 4499 if (fs_fd < 0)
2998 return; 4500 return;
2999 4501
4502 ev_ref (EV_A);
4503 ev_io_stop (EV_A_ &fs_w);
3000 close (fs_fd); 4504 close (fs_fd);
3001 fs_fd = inotify_init (); 4505 fs_fd = infy_newfd ();
3002 4506
4507 if (fs_fd >= 0)
4508 {
4509 fd_intern (fs_fd);
4510 ev_io_set (&fs_w, fs_fd, EV_READ);
4511 ev_io_start (EV_A_ &fs_w);
4512 ev_unref (EV_A);
4513 }
4514
3003 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4515 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
3004 { 4516 {
3005 WL w_ = fs_hash [slot].head; 4517 WL w_ = fs_hash [slot].head;
3006 fs_hash [slot].head = 0; 4518 fs_hash [slot].head = 0;
3007 4519
3008 while (w_) 4520 while (w_)
… …
3013 w->wd = -1; 4525 w->wd = -1;
3014 4526
3015 if (fs_fd >= 0) 4527 if (fs_fd >= 0)
3016 infy_add (EV_A_ w); /* re-add, no matter what */ 4528 infy_add (EV_A_ w); /* re-add, no matter what */
3017 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);
3018 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 }
3019 } 4536 }
3020 } 4537 }
3021} 4538}
3022 4539
3023#endif 4540#endif
… …
3027#else 4544#else
3028# define EV_LSTAT(p,b) lstat (p, b) 4545# define EV_LSTAT(p,b) lstat (p, b)
3029#endif 4546#endif
3030 4547
3031void 4548void
3032ev_stat_stat (EV_P_ ev_stat *w) 4549ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
3033{ 4550{
3034 if (lstat (w->path, &w->attr) < 0) 4551 if (lstat (w->path, &w->attr) < 0)
3035 w->attr.st_nlink = 0; 4552 w->attr.st_nlink = 0;
3036 else if (!w->attr.st_nlink) 4553 else if (!w->attr.st_nlink)
3037 w->attr.st_nlink = 1; 4554 w->attr.st_nlink = 1;
3038} 4555}
3039 4556
3040static void noinline 4557ecb_noinline
4558static void
3041stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4559stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3042{ 4560{
3043 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4561 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3044 4562
3045 /* we copy this here each the time so that */ 4563 ev_statdata prev = w->attr;
3046 /* prev has the old value when the callback gets invoked */
3047 w->prev = w->attr;
3048 ev_stat_stat (EV_A_ w); 4564 ev_stat_stat (EV_A_ w);
3049 4565
3050 /* 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 */
3051 if ( 4567 if (
3052 w->prev.st_dev != w->attr.st_dev 4568 prev.st_dev != w->attr.st_dev
3053 || w->prev.st_ino != w->attr.st_ino 4569 || prev.st_ino != w->attr.st_ino
3054 || w->prev.st_mode != w->attr.st_mode 4570 || prev.st_mode != w->attr.st_mode
3055 || w->prev.st_nlink != w->attr.st_nlink 4571 || prev.st_nlink != w->attr.st_nlink
3056 || w->prev.st_uid != w->attr.st_uid 4572 || prev.st_uid != w->attr.st_uid
3057 || w->prev.st_gid != w->attr.st_gid 4573 || prev.st_gid != w->attr.st_gid
3058 || w->prev.st_rdev != w->attr.st_rdev 4574 || prev.st_rdev != w->attr.st_rdev
3059 || w->prev.st_size != w->attr.st_size 4575 || prev.st_size != w->attr.st_size
3060 || w->prev.st_atime != w->attr.st_atime 4576 || prev.st_atime != w->attr.st_atime
3061 || w->prev.st_mtime != w->attr.st_mtime 4577 || prev.st_mtime != w->attr.st_mtime
3062 || w->prev.st_ctime != w->attr.st_ctime 4578 || prev.st_ctime != w->attr.st_ctime
3063 ) { 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
3064 #if EV_USE_INOTIFY 4585 #if EV_USE_INOTIFY
3065 if (fs_fd >= 0) 4586 if (fs_fd >= 0)
3066 { 4587 {
3067 infy_del (EV_A_ w); 4588 infy_del (EV_A_ w);
3068 infy_add (EV_A_ w); 4589 infy_add (EV_A_ w);
… …
3073 ev_feed_event (EV_A_ w, EV_STAT); 4594 ev_feed_event (EV_A_ w, EV_STAT);
3074 } 4595 }
3075} 4596}
3076 4597
3077void 4598void
3078ev_stat_start (EV_P_ ev_stat *w) 4599ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
3079{ 4600{
3080 if (expect_false (ev_is_active (w))) 4601 if (ecb_expect_false (ev_is_active (w)))
3081 return; 4602 return;
3082 4603
3083 ev_stat_stat (EV_A_ w); 4604 ev_stat_stat (EV_A_ w);
3084 4605
3085 if (w->interval < MIN_STAT_INTERVAL && w->interval) 4606 if (w->interval < MIN_STAT_INTERVAL && w->interval)
… …
3093 4614
3094 if (fs_fd >= 0) 4615 if (fs_fd >= 0)
3095 infy_add (EV_A_ w); 4616 infy_add (EV_A_ w);
3096 else 4617 else
3097#endif 4618#endif
4619 {
3098 ev_timer_again (EV_A_ &w->timer); 4620 ev_timer_again (EV_A_ &w->timer);
4621 ev_unref (EV_A);
4622 }
3099 4623
3100 ev_start (EV_A_ (W)w, 1); 4624 ev_start (EV_A_ (W)w, 1);
3101 4625
3102 EV_FREQUENT_CHECK; 4626 EV_FREQUENT_CHECK;
3103} 4627}
3104 4628
3105void 4629void
3106ev_stat_stop (EV_P_ ev_stat *w) 4630ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
3107{ 4631{
3108 clear_pending (EV_A_ (W)w); 4632 clear_pending (EV_A_ (W)w);
3109 if (expect_false (!ev_is_active (w))) 4633 if (ecb_expect_false (!ev_is_active (w)))
3110 return; 4634 return;
3111 4635
3112 EV_FREQUENT_CHECK; 4636 EV_FREQUENT_CHECK;
3113 4637
3114#if EV_USE_INOTIFY 4638#if EV_USE_INOTIFY
3115 infy_del (EV_A_ w); 4639 infy_del (EV_A_ w);
3116#endif 4640#endif
4641
4642 if (ev_is_active (&w->timer))
4643 {
4644 ev_ref (EV_A);
3117 ev_timer_stop (EV_A_ &w->timer); 4645 ev_timer_stop (EV_A_ &w->timer);
4646 }
3118 4647
3119 ev_stop (EV_A_ (W)w); 4648 ev_stop (EV_A_ (W)w);
3120 4649
3121 EV_FREQUENT_CHECK; 4650 EV_FREQUENT_CHECK;
3122} 4651}
3123#endif 4652#endif
3124 4653
3125#if EV_IDLE_ENABLE 4654#if EV_IDLE_ENABLE
3126void 4655void
3127ev_idle_start (EV_P_ ev_idle *w) 4656ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
3128{ 4657{
3129 if (expect_false (ev_is_active (w))) 4658 if (ecb_expect_false (ev_is_active (w)))
3130 return; 4659 return;
3131 4660
3132 pri_adjust (EV_A_ (W)w); 4661 pri_adjust (EV_A_ (W)w);
3133 4662
3134 EV_FREQUENT_CHECK; 4663 EV_FREQUENT_CHECK;
… …
3137 int active = ++idlecnt [ABSPRI (w)]; 4666 int active = ++idlecnt [ABSPRI (w)];
3138 4667
3139 ++idleall; 4668 ++idleall;
3140 ev_start (EV_A_ (W)w, active); 4669 ev_start (EV_A_ (W)w, active);
3141 4670
3142 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);
3143 idles [ABSPRI (w)][active - 1] = w; 4672 idles [ABSPRI (w)][active - 1] = w;
3144 } 4673 }
3145 4674
3146 EV_FREQUENT_CHECK; 4675 EV_FREQUENT_CHECK;
3147} 4676}
3148 4677
3149void 4678void
3150ev_idle_stop (EV_P_ ev_idle *w) 4679ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
3151{ 4680{
3152 clear_pending (EV_A_ (W)w); 4681 clear_pending (EV_A_ (W)w);
3153 if (expect_false (!ev_is_active (w))) 4682 if (ecb_expect_false (!ev_is_active (w)))
3154 return; 4683 return;
3155 4684
3156 EV_FREQUENT_CHECK; 4685 EV_FREQUENT_CHECK;
3157 4686
3158 { 4687 {
… …
3167 4696
3168 EV_FREQUENT_CHECK; 4697 EV_FREQUENT_CHECK;
3169} 4698}
3170#endif 4699#endif
3171 4700
4701#if EV_PREPARE_ENABLE
3172void 4702void
3173ev_prepare_start (EV_P_ ev_prepare *w) 4703ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
3174{ 4704{
3175 if (expect_false (ev_is_active (w))) 4705 if (ecb_expect_false (ev_is_active (w)))
3176 return; 4706 return;
3177 4707
3178 EV_FREQUENT_CHECK; 4708 EV_FREQUENT_CHECK;
3179 4709
3180 ev_start (EV_A_ (W)w, ++preparecnt); 4710 ev_start (EV_A_ (W)w, ++preparecnt);
3181 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4711 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
3182 prepares [preparecnt - 1] = w; 4712 prepares [preparecnt - 1] = w;
3183 4713
3184 EV_FREQUENT_CHECK; 4714 EV_FREQUENT_CHECK;
3185} 4715}
3186 4716
3187void 4717void
3188ev_prepare_stop (EV_P_ ev_prepare *w) 4718ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
3189{ 4719{
3190 clear_pending (EV_A_ (W)w); 4720 clear_pending (EV_A_ (W)w);
3191 if (expect_false (!ev_is_active (w))) 4721 if (ecb_expect_false (!ev_is_active (w)))
3192 return; 4722 return;
3193 4723
3194 EV_FREQUENT_CHECK; 4724 EV_FREQUENT_CHECK;
3195 4725
3196 { 4726 {
… …
3202 4732
3203 ev_stop (EV_A_ (W)w); 4733 ev_stop (EV_A_ (W)w);
3204 4734
3205 EV_FREQUENT_CHECK; 4735 EV_FREQUENT_CHECK;
3206} 4736}
4737#endif
3207 4738
4739#if EV_CHECK_ENABLE
3208void 4740void
3209ev_check_start (EV_P_ ev_check *w) 4741ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
3210{ 4742{
3211 if (expect_false (ev_is_active (w))) 4743 if (ecb_expect_false (ev_is_active (w)))
3212 return; 4744 return;
3213 4745
3214 EV_FREQUENT_CHECK; 4746 EV_FREQUENT_CHECK;
3215 4747
3216 ev_start (EV_A_ (W)w, ++checkcnt); 4748 ev_start (EV_A_ (W)w, ++checkcnt);
3217 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 4749 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
3218 checks [checkcnt - 1] = w; 4750 checks [checkcnt - 1] = w;
3219 4751
3220 EV_FREQUENT_CHECK; 4752 EV_FREQUENT_CHECK;
3221} 4753}
3222 4754
3223void 4755void
3224ev_check_stop (EV_P_ ev_check *w) 4756ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
3225{ 4757{
3226 clear_pending (EV_A_ (W)w); 4758 clear_pending (EV_A_ (W)w);
3227 if (expect_false (!ev_is_active (w))) 4759 if (ecb_expect_false (!ev_is_active (w)))
3228 return; 4760 return;
3229 4761
3230 EV_FREQUENT_CHECK; 4762 EV_FREQUENT_CHECK;
3231 4763
3232 { 4764 {
… …
3238 4770
3239 ev_stop (EV_A_ (W)w); 4771 ev_stop (EV_A_ (W)w);
3240 4772
3241 EV_FREQUENT_CHECK; 4773 EV_FREQUENT_CHECK;
3242} 4774}
4775#endif
3243 4776
3244#if EV_EMBED_ENABLE 4777#if EV_EMBED_ENABLE
3245void noinline 4778ecb_noinline
4779void
3246ev_embed_sweep (EV_P_ ev_embed *w) 4780ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
3247{ 4781{
3248 ev_loop (w->other, EVLOOP_NONBLOCK); 4782 ev_run (w->other, EVRUN_NOWAIT);
3249} 4783}
3250 4784
3251static void 4785static void
3252embed_io_cb (EV_P_ ev_io *io, int revents) 4786embed_io_cb (EV_P_ ev_io *io, int revents)
3253{ 4787{
3254 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4788 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3255 4789
3256 if (ev_cb (w)) 4790 if (ev_cb (w))
3257 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4791 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3258 else 4792 else
3259 ev_loop (w->other, EVLOOP_NONBLOCK); 4793 ev_run (w->other, EVRUN_NOWAIT);
3260} 4794}
3261 4795
3262static void 4796static void
3263embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4797embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3264{ 4798{
3265 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 4799 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
3266 4800
3267 { 4801 {
3268 struct ev_loop *loop = w->other; 4802 EV_P = w->other;
3269 4803
3270 while (fdchangecnt) 4804 while (fdchangecnt)
3271 { 4805 {
3272 fd_reify (EV_A); 4806 fd_reify (EV_A);
3273 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4807 ev_run (EV_A_ EVRUN_NOWAIT);
3274 } 4808 }
3275 } 4809 }
3276} 4810}
3277 4811
3278static void 4812static void
… …
3281 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 4815 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3282 4816
3283 ev_embed_stop (EV_A_ w); 4817 ev_embed_stop (EV_A_ w);
3284 4818
3285 { 4819 {
3286 struct ev_loop *loop = w->other; 4820 EV_P = w->other;
3287 4821
3288 ev_loop_fork (EV_A); 4822 ev_loop_fork (EV_A);
3289 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4823 ev_run (EV_A_ EVRUN_NOWAIT);
3290 } 4824 }
3291 4825
3292 ev_embed_start (EV_A_ w); 4826 ev_embed_start (EV_A_ w);
3293} 4827}
3294 4828
… …
3299 ev_idle_stop (EV_A_ idle); 4833 ev_idle_stop (EV_A_ idle);
3300} 4834}
3301#endif 4835#endif
3302 4836
3303void 4837void
3304ev_embed_start (EV_P_ ev_embed *w) 4838ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
3305{ 4839{
3306 if (expect_false (ev_is_active (w))) 4840 if (ecb_expect_false (ev_is_active (w)))
3307 return; 4841 return;
3308 4842
3309 { 4843 {
3310 struct ev_loop *loop = w->other; 4844 EV_P = w->other;
3311 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 ()));
3312 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 4846 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3313 } 4847 }
3314 4848
3315 EV_FREQUENT_CHECK; 4849 EV_FREQUENT_CHECK;
… …
3330 4864
3331 EV_FREQUENT_CHECK; 4865 EV_FREQUENT_CHECK;
3332} 4866}
3333 4867
3334void 4868void
3335ev_embed_stop (EV_P_ ev_embed *w) 4869ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
3336{ 4870{
3337 clear_pending (EV_A_ (W)w); 4871 clear_pending (EV_A_ (W)w);
3338 if (expect_false (!ev_is_active (w))) 4872 if (ecb_expect_false (!ev_is_active (w)))
3339 return; 4873 return;
3340 4874
3341 EV_FREQUENT_CHECK; 4875 EV_FREQUENT_CHECK;
3342 4876
3343 ev_io_stop (EV_A_ &w->io); 4877 ev_io_stop (EV_A_ &w->io);
3344 ev_prepare_stop (EV_A_ &w->prepare); 4878 ev_prepare_stop (EV_A_ &w->prepare);
3345 ev_fork_stop (EV_A_ &w->fork); 4879 ev_fork_stop (EV_A_ &w->fork);
3346 4880
4881 ev_stop (EV_A_ (W)w);
4882
3347 EV_FREQUENT_CHECK; 4883 EV_FREQUENT_CHECK;
3348} 4884}
3349#endif 4885#endif
3350 4886
3351#if EV_FORK_ENABLE 4887#if EV_FORK_ENABLE
3352void 4888void
3353ev_fork_start (EV_P_ ev_fork *w) 4889ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
3354{ 4890{
3355 if (expect_false (ev_is_active (w))) 4891 if (ecb_expect_false (ev_is_active (w)))
3356 return; 4892 return;
3357 4893
3358 EV_FREQUENT_CHECK; 4894 EV_FREQUENT_CHECK;
3359 4895
3360 ev_start (EV_A_ (W)w, ++forkcnt); 4896 ev_start (EV_A_ (W)w, ++forkcnt);
3361 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 4897 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
3362 forks [forkcnt - 1] = w; 4898 forks [forkcnt - 1] = w;
3363 4899
3364 EV_FREQUENT_CHECK; 4900 EV_FREQUENT_CHECK;
3365} 4901}
3366 4902
3367void 4903void
3368ev_fork_stop (EV_P_ ev_fork *w) 4904ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
3369{ 4905{
3370 clear_pending (EV_A_ (W)w); 4906 clear_pending (EV_A_ (W)w);
3371 if (expect_false (!ev_is_active (w))) 4907 if (ecb_expect_false (!ev_is_active (w)))
3372 return; 4908 return;
3373 4909
3374 EV_FREQUENT_CHECK; 4910 EV_FREQUENT_CHECK;
3375 4911
3376 { 4912 {
… …
3384 4920
3385 EV_FREQUENT_CHECK; 4921 EV_FREQUENT_CHECK;
3386} 4922}
3387#endif 4923#endif
3388 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
3389#if EV_ASYNC_ENABLE 4966#if EV_ASYNC_ENABLE
3390void 4967void
3391ev_async_start (EV_P_ ev_async *w) 4968ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
3392{ 4969{
3393 if (expect_false (ev_is_active (w))) 4970 if (ecb_expect_false (ev_is_active (w)))
3394 return; 4971 return;
3395 4972
4973 w->sent = 0;
4974
3396 evpipe_init (EV_A); 4975 evpipe_init (EV_A);
3397 4976
3398 EV_FREQUENT_CHECK; 4977 EV_FREQUENT_CHECK;
3399 4978
3400 ev_start (EV_A_ (W)w, ++asynccnt); 4979 ev_start (EV_A_ (W)w, ++asynccnt);
3401 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 4980 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
3402 asyncs [asynccnt - 1] = w; 4981 asyncs [asynccnt - 1] = w;
3403 4982
3404 EV_FREQUENT_CHECK; 4983 EV_FREQUENT_CHECK;
3405} 4984}
3406 4985
3407void 4986void
3408ev_async_stop (EV_P_ ev_async *w) 4987ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
3409{ 4988{
3410 clear_pending (EV_A_ (W)w); 4989 clear_pending (EV_A_ (W)w);
3411 if (expect_false (!ev_is_active (w))) 4990 if (ecb_expect_false (!ev_is_active (w)))
3412 return; 4991 return;
3413 4992
3414 EV_FREQUENT_CHECK; 4993 EV_FREQUENT_CHECK;
3415 4994
3416 { 4995 {
… …
3424 5003
3425 EV_FREQUENT_CHECK; 5004 EV_FREQUENT_CHECK;
3426} 5005}
3427 5006
3428void 5007void
3429ev_async_send (EV_P_ ev_async *w) 5008ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
3430{ 5009{
3431 w->sent = 1; 5010 w->sent = 1;
3432 evpipe_write (EV_A_ &gotasync); 5011 evpipe_write (EV_A_ &async_pending);
3433} 5012}
3434#endif 5013#endif
3435 5014
3436/*****************************************************************************/ 5015/*****************************************************************************/
3437 5016
… …
3471 5050
3472 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));
3473} 5052}
3474 5053
3475void 5054void
3476ev_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
3477{ 5056{
3478 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));
3479
3480 if (expect_false (!once))
3481 {
3482 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
3483 return;
3484 }
3485 5058
3486 once->cb = cb; 5059 once->cb = cb;
3487 once->arg = arg; 5060 once->arg = arg;
3488 5061
3489 ev_init (&once->io, once_cb_io); 5062 ev_init (&once->io, once_cb_io);
… …
3502} 5075}
3503 5076
3504/*****************************************************************************/ 5077/*****************************************************************************/
3505 5078
3506#if EV_WALK_ENABLE 5079#if EV_WALK_ENABLE
5080ecb_cold
3507void 5081void
3508ev_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
3509{ 5083{
3510 int i, j; 5084 int i, j;
3511 ev_watcher_list *wl, *wn; 5085 ev_watcher_list *wl, *wn;
3512 5086
3513 if (types & (EV_IO | EV_EMBED)) 5087 if (types & (EV_IO | EV_EMBED))
… …
3556 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 5130 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3557#endif 5131#endif
3558 5132
3559#if EV_IDLE_ENABLE 5133#if EV_IDLE_ENABLE
3560 if (types & EV_IDLE) 5134 if (types & EV_IDLE)
3561 for (j = NUMPRI; i--; ) 5135 for (j = NUMPRI; j--; )
3562 for (i = idlecnt [j]; i--; ) 5136 for (i = idlecnt [j]; i--; )
3563 cb (EV_A_ EV_IDLE, idles [j][i]); 5137 cb (EV_A_ EV_IDLE, idles [j][i]);
3564#endif 5138#endif
3565 5139
3566#if EV_FORK_ENABLE 5140#if EV_FORK_ENABLE
… …
3574 if (types & EV_ASYNC) 5148 if (types & EV_ASYNC)
3575 for (i = asynccnt; i--; ) 5149 for (i = asynccnt; i--; )
3576 cb (EV_A_ EV_ASYNC, asyncs [i]); 5150 cb (EV_A_ EV_ASYNC, asyncs [i]);
3577#endif 5151#endif
3578 5152
5153#if EV_PREPARE_ENABLE
3579 if (types & EV_PREPARE) 5154 if (types & EV_PREPARE)
3580 for (i = preparecnt; i--; ) 5155 for (i = preparecnt; i--; )
3581#if EV_EMBED_ENABLE 5156# if EV_EMBED_ENABLE
3582 if (ev_cb (prepares [i]) != embed_prepare_cb) 5157 if (ev_cb (prepares [i]) != embed_prepare_cb)
3583#endif 5158# endif
3584 cb (EV_A_ EV_PREPARE, prepares [i]); 5159 cb (EV_A_ EV_PREPARE, prepares [i]);
5160#endif
3585 5161
5162#if EV_CHECK_ENABLE
3586 if (types & EV_CHECK) 5163 if (types & EV_CHECK)
3587 for (i = checkcnt; i--; ) 5164 for (i = checkcnt; i--; )
3588 cb (EV_A_ EV_CHECK, checks [i]); 5165 cb (EV_A_ EV_CHECK, checks [i]);
5166#endif
3589 5167
5168#if EV_SIGNAL_ENABLE
3590 if (types & EV_SIGNAL) 5169 if (types & EV_SIGNAL)
3591 for (i = 0; i < signalmax; ++i) 5170 for (i = 0; i < EV_NSIG - 1; ++i)
3592 for (wl = signals [i].head; wl; ) 5171 for (wl = signals [i].head; wl; )
3593 { 5172 {
3594 wn = wl->next; 5173 wn = wl->next;
3595 cb (EV_A_ EV_SIGNAL, wl); 5174 cb (EV_A_ EV_SIGNAL, wl);
3596 wl = wn; 5175 wl = wn;
3597 } 5176 }
5177#endif
3598 5178
5179#if EV_CHILD_ENABLE
3599 if (types & EV_CHILD) 5180 if (types & EV_CHILD)
3600 for (i = EV_PID_HASHSIZE; i--; ) 5181 for (i = (EV_PID_HASHSIZE); i--; )
3601 for (wl = childs [i]; wl; ) 5182 for (wl = childs [i]; wl; )
3602 { 5183 {
3603 wn = wl->next; 5184 wn = wl->next;
3604 cb (EV_A_ EV_CHILD, wl); 5185 cb (EV_A_ EV_CHILD, wl);
3605 wl = wn; 5186 wl = wn;
3606 } 5187 }
5188#endif
3607/* EV_STAT 0x00001000 /* stat data changed */ 5189/* EV_STAT 0x00001000 /* stat data changed */
3608/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 5190/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3609} 5191}
3610#endif 5192#endif
3611 5193
3612#if EV_MULTIPLICITY 5194#if EV_MULTIPLICITY
3613 #include "ev_wrap.h" 5195 #include "ev_wrap.h"
3614#endif 5196#endif
3615 5197
3616#ifdef __cplusplus
3617}
3618#endif
3619

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