ViewVC Help
View File | Revision Log | Show Annotations | Download File
/cvs/libev/ev.c
(Generate patch)

Comparing libev/ev.c (file contents):
Revision 1.307 by root, Sun Jul 19 07:20:41 2009 UTC vs.
Revision 1.496 by root, Mon Jun 24 22:27:29 2019 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007-2019 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
10 * 1. Redistributions of source code must retain the above copyright notice, 10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer. 11 * this list of conditions and the following disclaimer.
12 * 12 *
13 * 2. Redistributions in binary form must reproduce the above copyright 13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the 14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution. 15 * documentation and/or other materials provided with the distribution.
16 * 16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- 18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO 19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- 20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
… …
35 * and other provisions required by the GPL. If you do not delete the 35 * and other provisions required by the GPL. If you do not delete the
36 * provisions above, a recipient may use your version of this file under 36 * provisions above, a recipient may use your version of this file under
37 * either the BSD or the GPL. 37 * either the BSD or the GPL.
38 */ 38 */
39 39
40#ifdef __cplusplus
41extern "C" {
42#endif
43
44/* this big block deduces configuration from config.h */ 40/* this big block deduces configuration from config.h */
45#ifndef EV_STANDALONE 41#ifndef EV_STANDALONE
46# ifdef EV_CONFIG_H 42# ifdef EV_CONFIG_H
47# include EV_CONFIG_H 43# include EV_CONFIG_H
48# else 44# else
49# include "config.h" 45# include "config.h"
46# endif
47
48# if HAVE_FLOOR
49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1
51# endif
50# endif 52# endif
51 53
52# if HAVE_CLOCK_SYSCALL 54# if HAVE_CLOCK_SYSCALL
53# ifndef EV_USE_CLOCK_SYSCALL 55# ifndef EV_USE_CLOCK_SYSCALL
54# define EV_USE_CLOCK_SYSCALL 1 56# define EV_USE_CLOCK_SYSCALL 1
… …
57# endif 59# endif
58# ifndef EV_USE_MONOTONIC 60# ifndef EV_USE_MONOTONIC
59# define EV_USE_MONOTONIC 1 61# define EV_USE_MONOTONIC 1
60# endif 62# endif
61# endif 63# endif
62# elif !defined(EV_USE_CLOCK_SYSCALL) 64# elif !defined EV_USE_CLOCK_SYSCALL
63# define EV_USE_CLOCK_SYSCALL 0 65# define EV_USE_CLOCK_SYSCALL 0
64# endif 66# endif
65 67
66# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
67# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
… …
77# ifndef EV_USE_REALTIME 79# ifndef EV_USE_REALTIME
78# define EV_USE_REALTIME 0 80# define EV_USE_REALTIME 0
79# endif 81# endif
80# endif 82# endif
81 83
84# if HAVE_NANOSLEEP
82# ifndef EV_USE_NANOSLEEP 85# ifndef EV_USE_NANOSLEEP
83# if HAVE_NANOSLEEP
84# define EV_USE_NANOSLEEP 1 86# define EV_USE_NANOSLEEP EV_FEATURE_OS
87# endif
85# else 88# else
89# undef EV_USE_NANOSLEEP
86# define EV_USE_NANOSLEEP 0 90# define EV_USE_NANOSLEEP 0
91# endif
92
93# if HAVE_SELECT && HAVE_SYS_SELECT_H
94# ifndef EV_USE_SELECT
95# define EV_USE_SELECT EV_FEATURE_BACKENDS
87# endif 96# endif
97# else
98# undef EV_USE_SELECT
99# define EV_USE_SELECT 0
88# endif 100# endif
89 101
102# if HAVE_POLL && HAVE_POLL_H
90# ifndef EV_USE_SELECT 103# ifndef EV_USE_POLL
91# if HAVE_SELECT && HAVE_SYS_SELECT_H 104# define EV_USE_POLL EV_FEATURE_BACKENDS
92# define EV_USE_SELECT 1
93# else
94# define EV_USE_SELECT 0
95# endif 105# endif
96# endif
97
98# ifndef EV_USE_POLL
99# if HAVE_POLL && HAVE_POLL_H
100# define EV_USE_POLL 1
101# else 106# else
107# undef EV_USE_POLL
102# define EV_USE_POLL 0 108# define EV_USE_POLL 0
103# endif
104# endif 109# endif
105 110
106# ifndef EV_USE_EPOLL
107# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 111# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
108# define EV_USE_EPOLL 1 112# ifndef EV_USE_EPOLL
109# else 113# define EV_USE_EPOLL EV_FEATURE_BACKENDS
110# define EV_USE_EPOLL 0
111# endif 114# endif
115# else
116# undef EV_USE_EPOLL
117# define EV_USE_EPOLL 0
112# endif 118# endif
113 119
114# ifndef EV_USE_KQUEUE 120# if HAVE_LINUX_AIO_ABI_H
115# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 121# ifndef EV_USE_LINUXAIO
116# define EV_USE_KQUEUE 1 122# define EV_USE_LINUXAIO EV_FEATURE_BACKENDS
117# else
118# define EV_USE_KQUEUE 0
119# endif 123# endif
124# else
125# undef EV_USE_LINUXAIO
126# define EV_USE_LINUXAIO 0
120# endif 127# endif
121 128
122# ifndef EV_USE_PORT 129# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
123# if HAVE_PORT_H && HAVE_PORT_CREATE 130# ifndef EV_USE_KQUEUE
124# define EV_USE_PORT 1 131# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
125# else
126# define EV_USE_PORT 0
127# endif 132# endif
133# else
134# undef EV_USE_KQUEUE
135# define EV_USE_KQUEUE 0
128# endif 136# endif
129 137
138# if HAVE_PORT_H && HAVE_PORT_CREATE
130# ifndef EV_USE_INOTIFY 139# ifndef EV_USE_PORT
131# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 140# define EV_USE_PORT EV_FEATURE_BACKENDS
132# define EV_USE_INOTIFY 1
133# else
134# define EV_USE_INOTIFY 0
135# endif 141# endif
142# else
143# undef EV_USE_PORT
144# define EV_USE_PORT 0
136# endif 145# endif
137 146
147# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
138# ifndef EV_USE_SIGNALFD 148# ifndef EV_USE_INOTIFY
139# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H 149# define EV_USE_INOTIFY EV_FEATURE_OS
140# define EV_USE_SIGNALFD 1
141# else
142# define EV_USE_SIGNALFD 0
143# endif 150# endif
151# else
152# undef EV_USE_INOTIFY
153# define EV_USE_INOTIFY 0
144# endif 154# endif
145 155
156# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
146# ifndef EV_USE_EVENTFD 157# ifndef EV_USE_SIGNALFD
147# if HAVE_EVENTFD 158# define EV_USE_SIGNALFD EV_FEATURE_OS
148# define EV_USE_EVENTFD 1
149# else
150# define EV_USE_EVENTFD 0
151# endif 159# endif
160# else
161# undef EV_USE_SIGNALFD
162# define EV_USE_SIGNALFD 0
163# endif
164
165# if HAVE_EVENTFD
166# ifndef EV_USE_EVENTFD
167# define EV_USE_EVENTFD EV_FEATURE_OS
168# endif
169# else
170# undef EV_USE_EVENTFD
171# define EV_USE_EVENTFD 0
152# endif 172# endif
153 173
154#endif 174#endif
155 175
156#include <math.h> 176/* OS X, in its infinite idiocy, actually HARDCODES
177 * a limit of 1024 into their select. Where people have brains,
178 * OS X engineers apparently have a vacuum. Or maybe they were
179 * ordered to have a vacuum, or they do anything for money.
180 * This might help. Or not.
181 * Note that this must be defined early, as other include files
182 * will rely on this define as well.
183 */
184#define _DARWIN_UNLIMITED_SELECT 1
185
157#include <stdlib.h> 186#include <stdlib.h>
187#include <string.h>
158#include <fcntl.h> 188#include <fcntl.h>
159#include <stddef.h> 189#include <stddef.h>
160 190
161#include <stdio.h> 191#include <stdio.h>
162 192
163#include <assert.h> 193#include <assert.h>
164#include <errno.h> 194#include <errno.h>
165#include <sys/types.h> 195#include <sys/types.h>
166#include <time.h> 196#include <time.h>
197#include <limits.h>
167 198
168#include <signal.h> 199#include <signal.h>
169 200
170#ifdef EV_H 201#ifdef EV_H
171# include EV_H 202# include EV_H
172#else 203#else
173# include "ev.h" 204# include "ev.h"
205#endif
206
207#if EV_NO_THREADS
208# undef EV_NO_SMP
209# define EV_NO_SMP 1
210# undef ECB_NO_THREADS
211# define ECB_NO_THREADS 1
212#endif
213#if EV_NO_SMP
214# undef EV_NO_SMP
215# define ECB_NO_SMP 1
174#endif 216#endif
175 217
176#ifndef _WIN32 218#ifndef _WIN32
177# include <sys/time.h> 219# include <sys/time.h>
178# include <sys/wait.h> 220# include <sys/wait.h>
179# include <unistd.h> 221# include <unistd.h>
180#else 222#else
181# include <io.h> 223# include <io.h>
182# define WIN32_LEAN_AND_MEAN 224# define WIN32_LEAN_AND_MEAN
225# include <winsock2.h>
183# include <windows.h> 226# include <windows.h>
184# ifndef EV_SELECT_IS_WINSOCKET 227# ifndef EV_SELECT_IS_WINSOCKET
185# define EV_SELECT_IS_WINSOCKET 1 228# define EV_SELECT_IS_WINSOCKET 1
186# endif 229# endif
230# undef EV_AVOID_STDIO
187#endif 231#endif
188 232
189/* this block tries to deduce configuration from header-defined symbols and defaults */ 233/* this block tries to deduce configuration from header-defined symbols and defaults */
190 234
191/* try to deduce the maximum number of signals on this platform */ 235/* try to deduce the maximum number of signals on this platform */
192#if defined (EV_NSIG) 236#if defined EV_NSIG
193/* use what's provided */ 237/* use what's provided */
194#elif defined (NSIG) 238#elif defined NSIG
195# define EV_NSIG (NSIG) 239# define EV_NSIG (NSIG)
196#elif defined(_NSIG) 240#elif defined _NSIG
197# define EV_NSIG (_NSIG) 241# define EV_NSIG (_NSIG)
198#elif defined (SIGMAX) 242#elif defined SIGMAX
199# define EV_NSIG (SIGMAX+1) 243# define EV_NSIG (SIGMAX+1)
200#elif defined (SIG_MAX) 244#elif defined SIG_MAX
201# define EV_NSIG (SIG_MAX+1) 245# define EV_NSIG (SIG_MAX+1)
202#elif defined (_SIG_MAX) 246#elif defined _SIG_MAX
203# define EV_NSIG (_SIG_MAX+1) 247# define EV_NSIG (_SIG_MAX+1)
204#elif defined (MAXSIG) 248#elif defined MAXSIG
205# define EV_NSIG (MAXSIG+1) 249# define EV_NSIG (MAXSIG+1)
206#elif defined (MAX_SIG) 250#elif defined MAX_SIG
207# define EV_NSIG (MAX_SIG+1) 251# define EV_NSIG (MAX_SIG+1)
208#elif defined (SIGARRAYSIZE) 252#elif defined SIGARRAYSIZE
209# define EV_NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */ 253# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
210#elif defined (_sys_nsig) 254#elif defined _sys_nsig
211# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 255# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
212#else 256#else
213# error "unable to find value for NSIG, please report" 257# define EV_NSIG (8 * sizeof (sigset_t) + 1)
214/* to make it compile regardless, just remove the above line */ 258#endif
215# define EV_NSIG 65 259
260#ifndef EV_USE_FLOOR
261# define EV_USE_FLOOR 0
216#endif 262#endif
217 263
218#ifndef EV_USE_CLOCK_SYSCALL 264#ifndef EV_USE_CLOCK_SYSCALL
219# if __linux && __GLIBC__ >= 2 265# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
220# define EV_USE_CLOCK_SYSCALL 1 266# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
221# else 267# else
222# define EV_USE_CLOCK_SYSCALL 0 268# define EV_USE_CLOCK_SYSCALL 0
223# endif 269# endif
224#endif 270#endif
225 271
272#if !(_POSIX_TIMERS > 0)
273# ifndef EV_USE_MONOTONIC
274# define EV_USE_MONOTONIC 0
275# endif
276# ifndef EV_USE_REALTIME
277# define EV_USE_REALTIME 0
278# endif
279#endif
280
226#ifndef EV_USE_MONOTONIC 281#ifndef EV_USE_MONOTONIC
227# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 282# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
228# define EV_USE_MONOTONIC 1 283# define EV_USE_MONOTONIC EV_FEATURE_OS
229# else 284# else
230# define EV_USE_MONOTONIC 0 285# define EV_USE_MONOTONIC 0
231# endif 286# endif
232#endif 287#endif
233 288
… …
235# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 290# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
236#endif 291#endif
237 292
238#ifndef EV_USE_NANOSLEEP 293#ifndef EV_USE_NANOSLEEP
239# if _POSIX_C_SOURCE >= 199309L 294# if _POSIX_C_SOURCE >= 199309L
240# define EV_USE_NANOSLEEP 1 295# define EV_USE_NANOSLEEP EV_FEATURE_OS
241# else 296# else
242# define EV_USE_NANOSLEEP 0 297# define EV_USE_NANOSLEEP 0
243# endif 298# endif
244#endif 299#endif
245 300
246#ifndef EV_USE_SELECT 301#ifndef EV_USE_SELECT
247# define EV_USE_SELECT 1 302# define EV_USE_SELECT EV_FEATURE_BACKENDS
248#endif 303#endif
249 304
250#ifndef EV_USE_POLL 305#ifndef EV_USE_POLL
251# ifdef _WIN32 306# ifdef _WIN32
252# define EV_USE_POLL 0 307# define EV_USE_POLL 0
253# else 308# else
254# define EV_USE_POLL 1 309# define EV_USE_POLL EV_FEATURE_BACKENDS
255# endif 310# endif
256#endif 311#endif
257 312
258#ifndef EV_USE_EPOLL 313#ifndef EV_USE_EPOLL
259# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 314# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
260# define EV_USE_EPOLL 1 315# define EV_USE_EPOLL EV_FEATURE_BACKENDS
261# else 316# else
262# define EV_USE_EPOLL 0 317# define EV_USE_EPOLL 0
263# endif 318# endif
264#endif 319#endif
265 320
… …
269 324
270#ifndef EV_USE_PORT 325#ifndef EV_USE_PORT
271# define EV_USE_PORT 0 326# define EV_USE_PORT 0
272#endif 327#endif
273 328
329#ifndef EV_USE_LINUXAIO
330# if __linux /* libev currently assumes linux/aio_abi.h is always available on linux */
331# define EV_USE_LINUXAIO 1
332# else
333# define EV_USE_LINUXAIO 0
334# endif
335#endif
336
274#ifndef EV_USE_INOTIFY 337#ifndef EV_USE_INOTIFY
275# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 338# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
276# define EV_USE_INOTIFY 1 339# define EV_USE_INOTIFY EV_FEATURE_OS
277# else 340# else
278# define EV_USE_INOTIFY 0 341# define EV_USE_INOTIFY 0
279# endif 342# endif
280#endif 343#endif
281 344
282#ifndef EV_PID_HASHSIZE 345#ifndef EV_PID_HASHSIZE
283# if EV_MINIMAL 346# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
284# define EV_PID_HASHSIZE 1
285# else
286# define EV_PID_HASHSIZE 16
287# endif
288#endif 347#endif
289 348
290#ifndef EV_INOTIFY_HASHSIZE 349#ifndef EV_INOTIFY_HASHSIZE
291# if EV_MINIMAL 350# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
292# define EV_INOTIFY_HASHSIZE 1
293# else
294# define EV_INOTIFY_HASHSIZE 16
295# endif
296#endif 351#endif
297 352
298#ifndef EV_USE_EVENTFD 353#ifndef EV_USE_EVENTFD
299# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 354# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
300# define EV_USE_EVENTFD 1 355# define EV_USE_EVENTFD EV_FEATURE_OS
301# else 356# else
302# define EV_USE_EVENTFD 0 357# define EV_USE_EVENTFD 0
303# endif 358# endif
304#endif 359#endif
305 360
306#ifndef EV_USE_SIGNALFD 361#ifndef EV_USE_SIGNALFD
307# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 9)) 362# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
308# define EV_USE_SIGNALFD 1 363# define EV_USE_SIGNALFD EV_FEATURE_OS
309# else 364# else
310# define EV_USE_SIGNALFD 0 365# define EV_USE_SIGNALFD 0
311# endif 366# endif
312#endif 367#endif
313 368
… …
316# define EV_USE_4HEAP 1 371# define EV_USE_4HEAP 1
317# define EV_HEAP_CACHE_AT 1 372# define EV_HEAP_CACHE_AT 1
318#endif 373#endif
319 374
320#ifndef EV_VERIFY 375#ifndef EV_VERIFY
321# define EV_VERIFY !EV_MINIMAL 376# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
322#endif 377#endif
323 378
324#ifndef EV_USE_4HEAP 379#ifndef EV_USE_4HEAP
325# define EV_USE_4HEAP !EV_MINIMAL 380# define EV_USE_4HEAP EV_FEATURE_DATA
326#endif 381#endif
327 382
328#ifndef EV_HEAP_CACHE_AT 383#ifndef EV_HEAP_CACHE_AT
329# define EV_HEAP_CACHE_AT !EV_MINIMAL 384# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
385#endif
386
387#ifdef __ANDROID__
388/* supposedly, android doesn't typedef fd_mask */
389# undef EV_USE_SELECT
390# define EV_USE_SELECT 0
391/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
392# undef EV_USE_CLOCK_SYSCALL
393# define EV_USE_CLOCK_SYSCALL 0
394#endif
395
396/* aix's poll.h seems to cause lots of trouble */
397#ifdef _AIX
398/* AIX has a completely broken poll.h header */
399# undef EV_USE_POLL
400# define EV_USE_POLL 0
330#endif 401#endif
331 402
332/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 403/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
333/* which makes programs even slower. might work on other unices, too. */ 404/* which makes programs even slower. might work on other unices, too. */
334#if EV_USE_CLOCK_SYSCALL 405#if EV_USE_CLOCK_SYSCALL
335# include <syscall.h> 406# include <sys/syscall.h>
336# ifdef SYS_clock_gettime 407# ifdef SYS_clock_gettime
337# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 408# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
338# undef EV_USE_MONOTONIC 409# undef EV_USE_MONOTONIC
339# define EV_USE_MONOTONIC 1 410# define EV_USE_MONOTONIC 1
340# else 411# else
… …
359# undef EV_USE_INOTIFY 430# undef EV_USE_INOTIFY
360# define EV_USE_INOTIFY 0 431# define EV_USE_INOTIFY 0
361#endif 432#endif
362 433
363#if !EV_USE_NANOSLEEP 434#if !EV_USE_NANOSLEEP
364# ifndef _WIN32 435/* hp-ux has it in sys/time.h, which we unconditionally include above */
436# if !defined _WIN32 && !defined __hpux
365# include <sys/select.h> 437# include <sys/select.h>
366# endif 438# endif
367#endif 439#endif
368 440
441#if EV_USE_LINUXAIO
442# include <sys/syscall.h>
443# if !SYS_io_getevents || !EV_USE_EPOLL /* ev_linxaio uses ev_poll.c:ev_epoll_create */
444# undef EV_USE_LINUXAIO
445# define EV_USE_LINUXAIO 0
446# endif
447#endif
448
369#if EV_USE_INOTIFY 449#if EV_USE_INOTIFY
370# include <sys/utsname.h>
371# include <sys/statfs.h> 450# include <sys/statfs.h>
372# include <sys/inotify.h> 451# include <sys/inotify.h>
373/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 452/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
374# ifndef IN_DONT_FOLLOW 453# ifndef IN_DONT_FOLLOW
375# undef EV_USE_INOTIFY 454# undef EV_USE_INOTIFY
376# define EV_USE_INOTIFY 0 455# define EV_USE_INOTIFY 0
377# endif 456# endif
378#endif 457#endif
379 458
380#if EV_SELECT_IS_WINSOCKET
381# include <winsock.h>
382#endif
383
384#if EV_USE_EVENTFD 459#if EV_USE_EVENTFD
385/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 460/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
386# include <stdint.h> 461# include <stdint.h>
387# ifndef EFD_NONBLOCK 462# ifndef EFD_NONBLOCK
388# define EFD_NONBLOCK O_NONBLOCK 463# define EFD_NONBLOCK O_NONBLOCK
389# endif 464# endif
390# ifndef EFD_CLOEXEC 465# ifndef EFD_CLOEXEC
466# ifdef O_CLOEXEC
391# define EFD_CLOEXEC O_CLOEXEC 467# define EFD_CLOEXEC O_CLOEXEC
468# else
469# define EFD_CLOEXEC 02000000
470# endif
392# endif 471# endif
393# ifdef __cplusplus 472EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
394extern "C" { 473#endif
474
475#if EV_USE_SIGNALFD
476/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
477# include <stdint.h>
478# ifndef SFD_NONBLOCK
479# define SFD_NONBLOCK O_NONBLOCK
395# endif 480# endif
396int eventfd (unsigned int initval, int flags); 481# ifndef SFD_CLOEXEC
397# ifdef __cplusplus 482# ifdef O_CLOEXEC
398} 483# define SFD_CLOEXEC O_CLOEXEC
484# else
485# define SFD_CLOEXEC 02000000
486# endif
399# endif 487# endif
400#endif 488EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
401 489
402#if EV_USE_SIGNALFD 490struct signalfd_siginfo
403# include <sys/signalfd.h> 491{
492 uint32_t ssi_signo;
493 char pad[128 - sizeof (uint32_t)];
494};
404#endif 495#endif
405 496
406/**/ 497/**/
407 498
408#if EV_VERIFY >= 3 499#if EV_VERIFY >= 3
409# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 500# define EV_FREQUENT_CHECK ev_verify (EV_A)
410#else 501#else
411# define EV_FREQUENT_CHECK do { } while (0) 502# define EV_FREQUENT_CHECK do { } while (0)
412#endif 503#endif
413 504
414/* 505/*
415 * This is used to avoid floating point rounding problems. 506 * This is used to work around floating point rounding problems.
416 * It is added to ev_rt_now when scheduling periodics
417 * to ensure progress, time-wise, even when rounding
418 * errors are against us.
419 * This value is good at least till the year 4000. 507 * This value is good at least till the year 4000.
420 * Better solutions welcome.
421 */ 508 */
422#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 509#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
510/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
423 511
424#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 512#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
425#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 513#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
426/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
427 514
515#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
516#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
517
518/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
519/* ECB.H BEGIN */
520/*
521 * libecb - http://software.schmorp.de/pkg/libecb
522 *
523 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
524 * Copyright (©) 2011 Emanuele Giaquinta
525 * All rights reserved.
526 *
527 * Redistribution and use in source and binary forms, with or without modifica-
528 * tion, are permitted provided that the following conditions are met:
529 *
530 * 1. Redistributions of source code must retain the above copyright notice,
531 * this list of conditions and the following disclaimer.
532 *
533 * 2. Redistributions in binary form must reproduce the above copyright
534 * notice, this list of conditions and the following disclaimer in the
535 * documentation and/or other materials provided with the distribution.
536 *
537 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
538 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
539 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
540 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
541 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
542 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
543 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
544 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
545 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
546 * OF THE POSSIBILITY OF SUCH DAMAGE.
547 *
548 * Alternatively, the contents of this file may be used under the terms of
549 * the GNU General Public License ("GPL") version 2 or any later version,
550 * in which case the provisions of the GPL are applicable instead of
551 * the above. If you wish to allow the use of your version of this file
552 * only under the terms of the GPL and not to allow others to use your
553 * version of this file under the BSD license, indicate your decision
554 * by deleting the provisions above and replace them with the notice
555 * and other provisions required by the GPL. If you do not delete the
556 * provisions above, a recipient may use your version of this file under
557 * either the BSD or the GPL.
558 */
559
560#ifndef ECB_H
561#define ECB_H
562
563/* 16 bits major, 16 bits minor */
564#define ECB_VERSION 0x00010006
565
566#ifdef _WIN32
567 typedef signed char int8_t;
568 typedef unsigned char uint8_t;
569 typedef signed short int16_t;
570 typedef unsigned short uint16_t;
571 typedef signed int int32_t;
572 typedef unsigned int uint32_t;
428#if __GNUC__ >= 4 573 #if __GNUC__
574 typedef signed long long int64_t;
575 typedef unsigned long long uint64_t;
576 #else /* _MSC_VER || __BORLANDC__ */
577 typedef signed __int64 int64_t;
578 typedef unsigned __int64 uint64_t;
579 #endif
580 #ifdef _WIN64
581 #define ECB_PTRSIZE 8
582 typedef uint64_t uintptr_t;
583 typedef int64_t intptr_t;
584 #else
585 #define ECB_PTRSIZE 4
586 typedef uint32_t uintptr_t;
587 typedef int32_t intptr_t;
588 #endif
589#else
590 #include <inttypes.h>
591 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
592 #define ECB_PTRSIZE 8
593 #else
594 #define ECB_PTRSIZE 4
595 #endif
596#endif
597
598#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
599#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
600
601/* work around x32 idiocy by defining proper macros */
602#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
603 #if _ILP32
604 #define ECB_AMD64_X32 1
605 #else
606 #define ECB_AMD64 1
607 #endif
608#endif
609
610/* many compilers define _GNUC_ to some versions but then only implement
611 * what their idiot authors think are the "more important" extensions,
612 * causing enormous grief in return for some better fake benchmark numbers.
613 * or so.
614 * we try to detect these and simply assume they are not gcc - if they have
615 * an issue with that they should have done it right in the first place.
616 */
617#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
618 #define ECB_GCC_VERSION(major,minor) 0
619#else
620 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
621#endif
622
623#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
624
625#if __clang__ && defined __has_builtin
626 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
627#else
628 #define ECB_CLANG_BUILTIN(x) 0
629#endif
630
631#if __clang__ && defined __has_extension
632 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
633#else
634 #define ECB_CLANG_EXTENSION(x) 0
635#endif
636
637#define ECB_CPP (__cplusplus+0)
638#define ECB_CPP11 (__cplusplus >= 201103L)
639#define ECB_CPP14 (__cplusplus >= 201402L)
640#define ECB_CPP17 (__cplusplus >= 201703L)
641
642#if ECB_CPP
643 #define ECB_C 0
644 #define ECB_STDC_VERSION 0
645#else
646 #define ECB_C 1
647 #define ECB_STDC_VERSION __STDC_VERSION__
648#endif
649
650#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
651#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
652#define ECB_C17 (ECB_STDC_VERSION >= 201710L)
653
654#if ECB_CPP
655 #define ECB_EXTERN_C extern "C"
656 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
657 #define ECB_EXTERN_C_END }
658#else
659 #define ECB_EXTERN_C extern
660 #define ECB_EXTERN_C_BEG
661 #define ECB_EXTERN_C_END
662#endif
663
664/*****************************************************************************/
665
666/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
667/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
668
669#if ECB_NO_THREADS
670 #define ECB_NO_SMP 1
671#endif
672
673#if ECB_NO_SMP
674 #define ECB_MEMORY_FENCE do { } while (0)
675#endif
676
677/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
678#if __xlC__ && ECB_CPP
679 #include <builtins.h>
680#endif
681
682#if 1400 <= _MSC_VER
683 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
684#endif
685
686#ifndef ECB_MEMORY_FENCE
687 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
688 #define ECB_MEMORY_FENCE_RELAXED __asm__ __volatile__ ("" : : : "memory")
689 #if __i386 || __i386__
690 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
691 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
692 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
693 #elif ECB_GCC_AMD64
694 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
695 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
696 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
697 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
698 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
699 #elif defined __ARM_ARCH_2__ \
700 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
701 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
702 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
703 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
704 || defined __ARM_ARCH_5TEJ__
705 /* should not need any, unless running old code on newer cpu - arm doesn't support that */
706 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
707 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
708 || defined __ARM_ARCH_6T2__
709 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
710 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
711 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
712 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
713 #elif __aarch64__
714 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
715 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
716 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
717 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
718 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
719 #elif defined __s390__ || defined __s390x__
720 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
721 #elif defined __mips__
722 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
723 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
724 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
725 #elif defined __alpha__
726 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
727 #elif defined __hppa__
728 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
729 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
730 #elif defined __ia64__
731 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
732 #elif defined __m68k__
733 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
734 #elif defined __m88k__
735 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
736 #elif defined __sh__
737 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
738 #endif
739 #endif
740#endif
741
742#ifndef ECB_MEMORY_FENCE
743 #if ECB_GCC_VERSION(4,7)
744 /* see comment below (stdatomic.h) about the C11 memory model. */
745 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
746 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
747 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
748 #define ECB_MEMORY_FENCE_RELAXED __atomic_thread_fence (__ATOMIC_RELAXED)
749
750 #elif ECB_CLANG_EXTENSION(c_atomic)
751 /* see comment below (stdatomic.h) about the C11 memory model. */
752 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
753 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
754 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
755 #define ECB_MEMORY_FENCE_RELAXED __c11_atomic_thread_fence (__ATOMIC_RELAXED)
756
757 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
758 #define ECB_MEMORY_FENCE __sync_synchronize ()
759 #elif _MSC_VER >= 1500 /* VC++ 2008 */
760 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
761 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
762 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
763 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
764 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
765 #elif _MSC_VER >= 1400 /* VC++ 2005 */
766 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
767 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
768 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
769 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
770 #elif defined _WIN32
771 #include <WinNT.h>
772 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
773 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
774 #include <mbarrier.h>
775 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
776 #define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier ()
777 #define ECB_MEMORY_FENCE_RELEASE __machine_rel_barrier ()
778 #define ECB_MEMORY_FENCE_RELAXED __compiler_barrier ()
779 #elif __xlC__
780 #define ECB_MEMORY_FENCE __sync ()
781 #endif
782#endif
783
784#ifndef ECB_MEMORY_FENCE
785 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
786 /* we assume that these memory fences work on all variables/all memory accesses, */
787 /* not just C11 atomics and atomic accesses */
788 #include <stdatomic.h>
789 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
790 #define ECB_MEMORY_FENCE_ACQUIRE atomic_thread_fence (memory_order_acquire)
791 #define ECB_MEMORY_FENCE_RELEASE atomic_thread_fence (memory_order_release)
792 #endif
793#endif
794
795#ifndef ECB_MEMORY_FENCE
796 #if !ECB_AVOID_PTHREADS
797 /*
798 * if you get undefined symbol references to pthread_mutex_lock,
799 * or failure to find pthread.h, then you should implement
800 * the ECB_MEMORY_FENCE operations for your cpu/compiler
801 * OR provide pthread.h and link against the posix thread library
802 * of your system.
803 */
804 #include <pthread.h>
805 #define ECB_NEEDS_PTHREADS 1
806 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
807
808 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
809 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
810 #endif
811#endif
812
813#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
814 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
815#endif
816
817#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
818 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
819#endif
820
821#if !defined ECB_MEMORY_FENCE_RELAXED && defined ECB_MEMORY_FENCE
822 #define ECB_MEMORY_FENCE_RELAXED ECB_MEMORY_FENCE /* very heavy-handed */
823#endif
824
825/*****************************************************************************/
826
827#if ECB_CPP
828 #define ecb_inline static inline
829#elif ECB_GCC_VERSION(2,5)
830 #define ecb_inline static __inline__
831#elif ECB_C99
832 #define ecb_inline static inline
833#else
834 #define ecb_inline static
835#endif
836
837#if ECB_GCC_VERSION(3,3)
838 #define ecb_restrict __restrict__
839#elif ECB_C99
840 #define ecb_restrict restrict
841#else
842 #define ecb_restrict
843#endif
844
845typedef int ecb_bool;
846
847#define ECB_CONCAT_(a, b) a ## b
848#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
849#define ECB_STRINGIFY_(a) # a
850#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
851#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
852
853#define ecb_function_ ecb_inline
854
855#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
856 #define ecb_attribute(attrlist) __attribute__ (attrlist)
857#else
858 #define ecb_attribute(attrlist)
859#endif
860
861#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
862 #define ecb_is_constant(expr) __builtin_constant_p (expr)
863#else
864 /* possible C11 impl for integral types
865 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
866 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
867
868 #define ecb_is_constant(expr) 0
869#endif
870
871#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
429# define expect(expr,value) __builtin_expect ((expr),(value)) 872 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
430# define noinline __attribute__ ((noinline))
431#else 873#else
432# define expect(expr,value) (expr) 874 #define ecb_expect(expr,value) (expr)
433# define noinline
434# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
435# define inline
436# endif 875#endif
437#endif
438 876
877#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
878 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
879#else
880 #define ecb_prefetch(addr,rw,locality)
881#endif
882
883/* no emulation for ecb_decltype */
884#if ECB_CPP11
885 // older implementations might have problems with decltype(x)::type, work around it
886 template<class T> struct ecb_decltype_t { typedef T type; };
887 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
888#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
889 #define ecb_decltype(x) __typeof__ (x)
890#endif
891
892#if _MSC_VER >= 1300
893 #define ecb_deprecated __declspec (deprecated)
894#else
895 #define ecb_deprecated ecb_attribute ((__deprecated__))
896#endif
897
898#if _MSC_VER >= 1500
899 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
900#elif ECB_GCC_VERSION(4,5)
901 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
902#else
903 #define ecb_deprecated_message(msg) ecb_deprecated
904#endif
905
906#if _MSC_VER >= 1400
907 #define ecb_noinline __declspec (noinline)
908#else
909 #define ecb_noinline ecb_attribute ((__noinline__))
910#endif
911
912#define ecb_unused ecb_attribute ((__unused__))
913#define ecb_const ecb_attribute ((__const__))
914#define ecb_pure ecb_attribute ((__pure__))
915
916#if ECB_C11 || __IBMC_NORETURN
917 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
918 #define ecb_noreturn _Noreturn
919#elif ECB_CPP11
920 #define ecb_noreturn [[noreturn]]
921#elif _MSC_VER >= 1200
922 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
923 #define ecb_noreturn __declspec (noreturn)
924#else
925 #define ecb_noreturn ecb_attribute ((__noreturn__))
926#endif
927
928#if ECB_GCC_VERSION(4,3)
929 #define ecb_artificial ecb_attribute ((__artificial__))
930 #define ecb_hot ecb_attribute ((__hot__))
931 #define ecb_cold ecb_attribute ((__cold__))
932#else
933 #define ecb_artificial
934 #define ecb_hot
935 #define ecb_cold
936#endif
937
938/* put around conditional expressions if you are very sure that the */
939/* expression is mostly true or mostly false. note that these return */
940/* booleans, not the expression. */
439#define expect_false(expr) expect ((expr) != 0, 0) 941#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
440#define expect_true(expr) expect ((expr) != 0, 1) 942#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
943/* for compatibility to the rest of the world */
944#define ecb_likely(expr) ecb_expect_true (expr)
945#define ecb_unlikely(expr) ecb_expect_false (expr)
946
947/* count trailing zero bits and count # of one bits */
948#if ECB_GCC_VERSION(3,4) \
949 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
950 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
951 && ECB_CLANG_BUILTIN(__builtin_popcount))
952 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
953 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
954 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
955 #define ecb_ctz32(x) __builtin_ctz (x)
956 #define ecb_ctz64(x) __builtin_ctzll (x)
957 #define ecb_popcount32(x) __builtin_popcount (x)
958 /* no popcountll */
959#else
960 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
961 ecb_function_ ecb_const int
962 ecb_ctz32 (uint32_t x)
963 {
964#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
965 unsigned long r;
966 _BitScanForward (&r, x);
967 return (int)r;
968#else
969 int r = 0;
970
971 x &= ~x + 1; /* this isolates the lowest bit */
972
973#if ECB_branchless_on_i386
974 r += !!(x & 0xaaaaaaaa) << 0;
975 r += !!(x & 0xcccccccc) << 1;
976 r += !!(x & 0xf0f0f0f0) << 2;
977 r += !!(x & 0xff00ff00) << 3;
978 r += !!(x & 0xffff0000) << 4;
979#else
980 if (x & 0xaaaaaaaa) r += 1;
981 if (x & 0xcccccccc) r += 2;
982 if (x & 0xf0f0f0f0) r += 4;
983 if (x & 0xff00ff00) r += 8;
984 if (x & 0xffff0000) r += 16;
985#endif
986
987 return r;
988#endif
989 }
990
991 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
992 ecb_function_ ecb_const int
993 ecb_ctz64 (uint64_t x)
994 {
995#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
996 unsigned long r;
997 _BitScanForward64 (&r, x);
998 return (int)r;
999#else
1000 int shift = x & 0xffffffff ? 0 : 32;
1001 return ecb_ctz32 (x >> shift) + shift;
1002#endif
1003 }
1004
1005 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
1006 ecb_function_ ecb_const int
1007 ecb_popcount32 (uint32_t x)
1008 {
1009 x -= (x >> 1) & 0x55555555;
1010 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
1011 x = ((x >> 4) + x) & 0x0f0f0f0f;
1012 x *= 0x01010101;
1013
1014 return x >> 24;
1015 }
1016
1017 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
1018 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
1019 {
1020#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1021 unsigned long r;
1022 _BitScanReverse (&r, x);
1023 return (int)r;
1024#else
1025 int r = 0;
1026
1027 if (x >> 16) { x >>= 16; r += 16; }
1028 if (x >> 8) { x >>= 8; r += 8; }
1029 if (x >> 4) { x >>= 4; r += 4; }
1030 if (x >> 2) { x >>= 2; r += 2; }
1031 if (x >> 1) { r += 1; }
1032
1033 return r;
1034#endif
1035 }
1036
1037 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
1038 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
1039 {
1040#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1041 unsigned long r;
1042 _BitScanReverse64 (&r, x);
1043 return (int)r;
1044#else
1045 int r = 0;
1046
1047 if (x >> 32) { x >>= 32; r += 32; }
1048
1049 return r + ecb_ld32 (x);
1050#endif
1051 }
1052#endif
1053
1054ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
1055ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
1056ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
1057ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
1058
1059ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
1060ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
1061{
1062 return ( (x * 0x0802U & 0x22110U)
1063 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
1064}
1065
1066ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
1067ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
1068{
1069 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
1070 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
1071 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
1072 x = ( x >> 8 ) | ( x << 8);
1073
1074 return x;
1075}
1076
1077ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
1078ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
1079{
1080 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
1081 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
1082 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
1083 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
1084 x = ( x >> 16 ) | ( x << 16);
1085
1086 return x;
1087}
1088
1089/* popcount64 is only available on 64 bit cpus as gcc builtin */
1090/* so for this version we are lazy */
1091ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
1092ecb_function_ ecb_const int
1093ecb_popcount64 (uint64_t x)
1094{
1095 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
1096}
1097
1098ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
1099ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
1100ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
1101ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
1102ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
1103ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
1104ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
1105ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
1106
1107ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
1108ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
1109ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
1110ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
1111ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
1112ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
1113ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
1114ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
1115
1116#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1117 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1118 #define ecb_bswap16(x) __builtin_bswap16 (x)
1119 #else
1120 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1121 #endif
1122 #define ecb_bswap32(x) __builtin_bswap32 (x)
1123 #define ecb_bswap64(x) __builtin_bswap64 (x)
1124#elif _MSC_VER
1125 #include <stdlib.h>
1126 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1127 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1128 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
1129#else
1130 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
1131 ecb_function_ ecb_const uint16_t
1132 ecb_bswap16 (uint16_t x)
1133 {
1134 return ecb_rotl16 (x, 8);
1135 }
1136
1137 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
1138 ecb_function_ ecb_const uint32_t
1139 ecb_bswap32 (uint32_t x)
1140 {
1141 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
1142 }
1143
1144 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
1145 ecb_function_ ecb_const uint64_t
1146 ecb_bswap64 (uint64_t x)
1147 {
1148 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
1149 }
1150#endif
1151
1152#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
1153 #define ecb_unreachable() __builtin_unreachable ()
1154#else
1155 /* this seems to work fine, but gcc always emits a warning for it :/ */
1156 ecb_inline ecb_noreturn void ecb_unreachable (void);
1157 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
1158#endif
1159
1160/* try to tell the compiler that some condition is definitely true */
1161#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
1162
1163ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
1164ecb_inline ecb_const uint32_t
1165ecb_byteorder_helper (void)
1166{
1167 /* the union code still generates code under pressure in gcc, */
1168 /* but less than using pointers, and always seems to */
1169 /* successfully return a constant. */
1170 /* the reason why we have this horrible preprocessor mess */
1171 /* is to avoid it in all cases, at least on common architectures */
1172 /* or when using a recent enough gcc version (>= 4.6) */
1173#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1174 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1175 #define ECB_LITTLE_ENDIAN 1
1176 return 0x44332211;
1177#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1178 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1179 #define ECB_BIG_ENDIAN 1
1180 return 0x11223344;
1181#else
1182 union
1183 {
1184 uint8_t c[4];
1185 uint32_t u;
1186 } u = { 0x11, 0x22, 0x33, 0x44 };
1187 return u.u;
1188#endif
1189}
1190
1191ecb_inline ecb_const ecb_bool ecb_big_endian (void);
1192ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
1193ecb_inline ecb_const ecb_bool ecb_little_endian (void);
1194ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
1195
1196#if ECB_GCC_VERSION(3,0) || ECB_C99
1197 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1198#else
1199 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1200#endif
1201
1202#if ECB_CPP
1203 template<typename T>
1204 static inline T ecb_div_rd (T val, T div)
1205 {
1206 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1207 }
1208 template<typename T>
1209 static inline T ecb_div_ru (T val, T div)
1210 {
1211 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1212 }
1213#else
1214 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1215 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1216#endif
1217
1218#if ecb_cplusplus_does_not_suck
1219 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1220 template<typename T, int N>
1221 static inline int ecb_array_length (const T (&arr)[N])
1222 {
1223 return N;
1224 }
1225#else
1226 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1227#endif
1228
1229ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1230ecb_function_ ecb_const uint32_t
1231ecb_binary16_to_binary32 (uint32_t x)
1232{
1233 unsigned int s = (x & 0x8000) << (31 - 15);
1234 int e = (x >> 10) & 0x001f;
1235 unsigned int m = x & 0x03ff;
1236
1237 if (ecb_expect_false (e == 31))
1238 /* infinity or NaN */
1239 e = 255 - (127 - 15);
1240 else if (ecb_expect_false (!e))
1241 {
1242 if (ecb_expect_true (!m))
1243 /* zero, handled by code below by forcing e to 0 */
1244 e = 0 - (127 - 15);
1245 else
1246 {
1247 /* subnormal, renormalise */
1248 unsigned int s = 10 - ecb_ld32 (m);
1249
1250 m = (m << s) & 0x3ff; /* mask implicit bit */
1251 e -= s - 1;
1252 }
1253 }
1254
1255 /* e and m now are normalised, or zero, (or inf or nan) */
1256 e += 127 - 15;
1257
1258 return s | (e << 23) | (m << (23 - 10));
1259}
1260
1261ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1262ecb_function_ ecb_const uint16_t
1263ecb_binary32_to_binary16 (uint32_t x)
1264{
1265 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1266 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1267 unsigned int m = x & 0x007fffff;
1268
1269 x &= 0x7fffffff;
1270
1271 /* if it's within range of binary16 normals, use fast path */
1272 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1273 {
1274 /* mantissa round-to-even */
1275 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1276
1277 /* handle overflow */
1278 if (ecb_expect_false (m >= 0x00800000))
1279 {
1280 m >>= 1;
1281 e += 1;
1282 }
1283
1284 return s | (e << 10) | (m >> (23 - 10));
1285 }
1286
1287 /* handle large numbers and infinity */
1288 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1289 return s | 0x7c00;
1290
1291 /* handle zero, subnormals and small numbers */
1292 if (ecb_expect_true (x < 0x38800000))
1293 {
1294 /* zero */
1295 if (ecb_expect_true (!x))
1296 return s;
1297
1298 /* handle subnormals */
1299
1300 /* too small, will be zero */
1301 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1302 return s;
1303
1304 m |= 0x00800000; /* make implicit bit explicit */
1305
1306 /* very tricky - we need to round to the nearest e (+10) bit value */
1307 {
1308 unsigned int bits = 14 - e;
1309 unsigned int half = (1 << (bits - 1)) - 1;
1310 unsigned int even = (m >> bits) & 1;
1311
1312 /* if this overflows, we will end up with a normalised number */
1313 m = (m + half + even) >> bits;
1314 }
1315
1316 return s | m;
1317 }
1318
1319 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1320 m >>= 13;
1321
1322 return s | 0x7c00 | m | !m;
1323}
1324
1325/*******************************************************************************/
1326/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1327
1328/* basically, everything uses "ieee pure-endian" floating point numbers */
1329/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1330#if 0 \
1331 || __i386 || __i386__ \
1332 || ECB_GCC_AMD64 \
1333 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1334 || defined __s390__ || defined __s390x__ \
1335 || defined __mips__ \
1336 || defined __alpha__ \
1337 || defined __hppa__ \
1338 || defined __ia64__ \
1339 || defined __m68k__ \
1340 || defined __m88k__ \
1341 || defined __sh__ \
1342 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1343 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1344 || defined __aarch64__
1345 #define ECB_STDFP 1
1346 #include <string.h> /* for memcpy */
1347#else
1348 #define ECB_STDFP 0
1349#endif
1350
1351#ifndef ECB_NO_LIBM
1352
1353 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1354
1355 /* only the oldest of old doesn't have this one. solaris. */
1356 #ifdef INFINITY
1357 #define ECB_INFINITY INFINITY
1358 #else
1359 #define ECB_INFINITY HUGE_VAL
1360 #endif
1361
1362 #ifdef NAN
1363 #define ECB_NAN NAN
1364 #else
1365 #define ECB_NAN ECB_INFINITY
1366 #endif
1367
1368 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1369 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1370 #define ecb_frexpf(x,e) frexpf ((x), (e))
1371 #else
1372 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1373 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1374 #endif
1375
1376 /* convert a float to ieee single/binary32 */
1377 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1378 ecb_function_ ecb_const uint32_t
1379 ecb_float_to_binary32 (float x)
1380 {
1381 uint32_t r;
1382
1383 #if ECB_STDFP
1384 memcpy (&r, &x, 4);
1385 #else
1386 /* slow emulation, works for anything but -0 */
1387 uint32_t m;
1388 int e;
1389
1390 if (x == 0e0f ) return 0x00000000U;
1391 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1392 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1393 if (x != x ) return 0x7fbfffffU;
1394
1395 m = ecb_frexpf (x, &e) * 0x1000000U;
1396
1397 r = m & 0x80000000U;
1398
1399 if (r)
1400 m = -m;
1401
1402 if (e <= -126)
1403 {
1404 m &= 0xffffffU;
1405 m >>= (-125 - e);
1406 e = -126;
1407 }
1408
1409 r |= (e + 126) << 23;
1410 r |= m & 0x7fffffU;
1411 #endif
1412
1413 return r;
1414 }
1415
1416 /* converts an ieee single/binary32 to a float */
1417 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1418 ecb_function_ ecb_const float
1419 ecb_binary32_to_float (uint32_t x)
1420 {
1421 float r;
1422
1423 #if ECB_STDFP
1424 memcpy (&r, &x, 4);
1425 #else
1426 /* emulation, only works for normals and subnormals and +0 */
1427 int neg = x >> 31;
1428 int e = (x >> 23) & 0xffU;
1429
1430 x &= 0x7fffffU;
1431
1432 if (e)
1433 x |= 0x800000U;
1434 else
1435 e = 1;
1436
1437 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1438 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1439
1440 r = neg ? -r : r;
1441 #endif
1442
1443 return r;
1444 }
1445
1446 /* convert a double to ieee double/binary64 */
1447 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1448 ecb_function_ ecb_const uint64_t
1449 ecb_double_to_binary64 (double x)
1450 {
1451 uint64_t r;
1452
1453 #if ECB_STDFP
1454 memcpy (&r, &x, 8);
1455 #else
1456 /* slow emulation, works for anything but -0 */
1457 uint64_t m;
1458 int e;
1459
1460 if (x == 0e0 ) return 0x0000000000000000U;
1461 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1462 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1463 if (x != x ) return 0X7ff7ffffffffffffU;
1464
1465 m = frexp (x, &e) * 0x20000000000000U;
1466
1467 r = m & 0x8000000000000000;;
1468
1469 if (r)
1470 m = -m;
1471
1472 if (e <= -1022)
1473 {
1474 m &= 0x1fffffffffffffU;
1475 m >>= (-1021 - e);
1476 e = -1022;
1477 }
1478
1479 r |= ((uint64_t)(e + 1022)) << 52;
1480 r |= m & 0xfffffffffffffU;
1481 #endif
1482
1483 return r;
1484 }
1485
1486 /* converts an ieee double/binary64 to a double */
1487 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1488 ecb_function_ ecb_const double
1489 ecb_binary64_to_double (uint64_t x)
1490 {
1491 double r;
1492
1493 #if ECB_STDFP
1494 memcpy (&r, &x, 8);
1495 #else
1496 /* emulation, only works for normals and subnormals and +0 */
1497 int neg = x >> 63;
1498 int e = (x >> 52) & 0x7ffU;
1499
1500 x &= 0xfffffffffffffU;
1501
1502 if (e)
1503 x |= 0x10000000000000U;
1504 else
1505 e = 1;
1506
1507 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1508 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1509
1510 r = neg ? -r : r;
1511 #endif
1512
1513 return r;
1514 }
1515
1516 /* convert a float to ieee half/binary16 */
1517 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1518 ecb_function_ ecb_const uint16_t
1519 ecb_float_to_binary16 (float x)
1520 {
1521 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1522 }
1523
1524 /* convert an ieee half/binary16 to float */
1525 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1526 ecb_function_ ecb_const float
1527 ecb_binary16_to_float (uint16_t x)
1528 {
1529 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1530 }
1531
1532#endif
1533
1534#endif
1535
1536/* ECB.H END */
1537
1538#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1539/* if your architecture doesn't need memory fences, e.g. because it is
1540 * single-cpu/core, or if you use libev in a project that doesn't use libev
1541 * from multiple threads, then you can define ECB_AVOID_PTHREADS 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
1555#define expect_false(cond) ecb_expect_false (cond)
1556#define expect_true(cond) ecb_expect_true (cond)
1557#define noinline ecb_noinline
1558
441#define inline_size static inline 1559#define inline_size ecb_inline
442 1560
443#if EV_MINIMAL 1561#if EV_FEATURE_CODE
444# define inline_speed static noinline
445#else
446# define inline_speed static inline 1562# define inline_speed ecb_inline
1563#else
1564# define inline_speed noinline static
447#endif 1565#endif
448 1566
449#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1567#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
450 1568
451#if EV_MINPRI == EV_MAXPRI 1569#if EV_MINPRI == EV_MAXPRI
452# define ABSPRI(w) (((W)w), 0) 1570# define ABSPRI(w) (((W)w), 0)
453#else 1571#else
454# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1572# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
455#endif 1573#endif
456 1574
457#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1575#define EMPTY /* required for microsofts broken pseudo-c compiler */
458#define EMPTY2(a,b) /* used to suppress some warnings */
459 1576
460typedef ev_watcher *W; 1577typedef ev_watcher *W;
461typedef ev_watcher_list *WL; 1578typedef ev_watcher_list *WL;
462typedef ev_watcher_time *WT; 1579typedef ev_watcher_time *WT;
463 1580
464#define ev_active(w) ((W)(w))->active 1581#define ev_active(w) ((W)(w))->active
465#define ev_at(w) ((WT)(w))->at 1582#define ev_at(w) ((WT)(w))->at
466 1583
467#if EV_USE_REALTIME 1584#if EV_USE_REALTIME
468/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 1585/* sig_atomic_t is used to avoid per-thread variables or locking but still */
469/* giving it a reasonably high chance of working on typical architetcures */ 1586/* giving it a reasonably high chance of working on typical architectures */
470static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 1587static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
471#endif 1588#endif
472 1589
473#if EV_USE_MONOTONIC 1590#if EV_USE_MONOTONIC
474static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 1591static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
475#endif 1592#endif
476 1593
1594#ifndef EV_FD_TO_WIN32_HANDLE
1595# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
1596#endif
1597#ifndef EV_WIN32_HANDLE_TO_FD
1598# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
1599#endif
1600#ifndef EV_WIN32_CLOSE_FD
1601# define EV_WIN32_CLOSE_FD(fd) close (fd)
1602#endif
1603
477#ifdef _WIN32 1604#ifdef _WIN32
478# include "ev_win32.c" 1605# include "ev_win32.c"
479#endif 1606#endif
480 1607
481/*****************************************************************************/ 1608/*****************************************************************************/
482 1609
1610#if EV_USE_LINUXAIO
1611# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
1612#endif
1613
1614/* define a suitable floor function (only used by periodics atm) */
1615
1616#if EV_USE_FLOOR
1617# include <math.h>
1618# define ev_floor(v) floor (v)
1619#else
1620
1621#include <float.h>
1622
1623/* a floor() replacement function, should be independent of ev_tstamp type */
1624noinline
1625static ev_tstamp
1626ev_floor (ev_tstamp v)
1627{
1628 /* the choice of shift factor is not terribly important */
1629#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1630 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1631#else
1632 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1633#endif
1634
1635 /* argument too large for an unsigned long? */
1636 if (expect_false (v >= shift))
1637 {
1638 ev_tstamp f;
1639
1640 if (v == v - 1.)
1641 return v; /* very large number */
1642
1643 f = shift * ev_floor (v * (1. / shift));
1644 return f + ev_floor (v - f);
1645 }
1646
1647 /* special treatment for negative args? */
1648 if (expect_false (v < 0.))
1649 {
1650 ev_tstamp f = -ev_floor (-v);
1651
1652 return f - (f == v ? 0 : 1);
1653 }
1654
1655 /* fits into an unsigned long */
1656 return (unsigned long)v;
1657}
1658
1659#endif
1660
1661/*****************************************************************************/
1662
1663#ifdef __linux
1664# include <sys/utsname.h>
1665#endif
1666
1667noinline ecb_cold
1668static unsigned int
1669ev_linux_version (void)
1670{
1671#ifdef __linux
1672 unsigned int v = 0;
1673 struct utsname buf;
1674 int i;
1675 char *p = buf.release;
1676
1677 if (uname (&buf))
1678 return 0;
1679
1680 for (i = 3+1; --i; )
1681 {
1682 unsigned int c = 0;
1683
1684 for (;;)
1685 {
1686 if (*p >= '0' && *p <= '9')
1687 c = c * 10 + *p++ - '0';
1688 else
1689 {
1690 p += *p == '.';
1691 break;
1692 }
1693 }
1694
1695 v = (v << 8) | c;
1696 }
1697
1698 return v;
1699#else
1700 return 0;
1701#endif
1702}
1703
1704/*****************************************************************************/
1705
1706#if EV_AVOID_STDIO
1707noinline ecb_cold
1708static void
1709ev_printerr (const char *msg)
1710{
1711 write (STDERR_FILENO, msg, strlen (msg));
1712}
1713#endif
1714
483static void (*syserr_cb)(const char *msg); 1715static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
484 1716
1717ecb_cold
485void 1718void
486ev_set_syserr_cb (void (*cb)(const char *msg)) 1719ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
487{ 1720{
488 syserr_cb = cb; 1721 syserr_cb = cb;
489} 1722}
490 1723
491static void noinline 1724noinline ecb_cold
1725static void
492ev_syserr (const char *msg) 1726ev_syserr (const char *msg)
493{ 1727{
494 if (!msg) 1728 if (!msg)
495 msg = "(libev) system error"; 1729 msg = "(libev) system error";
496 1730
497 if (syserr_cb) 1731 if (syserr_cb)
498 syserr_cb (msg); 1732 syserr_cb (msg);
499 else 1733 else
500 { 1734 {
1735#if EV_AVOID_STDIO
1736 ev_printerr (msg);
1737 ev_printerr (": ");
1738 ev_printerr (strerror (errno));
1739 ev_printerr ("\n");
1740#else
501 perror (msg); 1741 perror (msg);
1742#endif
502 abort (); 1743 abort ();
503 } 1744 }
504} 1745}
505 1746
506static void * 1747static void *
507ev_realloc_emul (void *ptr, long size) 1748ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
508{ 1749{
509 /* some systems, notably openbsd and darwin, fail to properly 1750 /* some systems, notably openbsd and darwin, fail to properly
510 * implement realloc (x, 0) (as required by both ansi c-98 and 1751 * implement realloc (x, 0) (as required by both ansi c-89 and
511 * the single unix specification, so work around them here. 1752 * the single unix specification, so work around them here.
1753 * recently, also (at least) fedora and debian started breaking it,
1754 * despite documenting it otherwise.
512 */ 1755 */
513 1756
514 if (size) 1757 if (size)
515 return realloc (ptr, size); 1758 return realloc (ptr, size);
516 1759
517 free (ptr); 1760 free (ptr);
518 return 0; 1761 return 0;
519} 1762}
520 1763
521static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1764static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
522 1765
1766ecb_cold
523void 1767void
524ev_set_allocator (void *(*cb)(void *ptr, long size)) 1768ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
525{ 1769{
526 alloc = cb; 1770 alloc = cb;
527} 1771}
528 1772
529inline_speed void * 1773inline_speed void *
… …
531{ 1775{
532 ptr = alloc (ptr, size); 1776 ptr = alloc (ptr, size);
533 1777
534 if (!ptr && size) 1778 if (!ptr && size)
535 { 1779 {
1780#if EV_AVOID_STDIO
1781 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1782#else
536 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1783 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1784#endif
537 abort (); 1785 abort ();
538 } 1786 }
539 1787
540 return ptr; 1788 return ptr;
541} 1789}
… …
552typedef struct 1800typedef struct
553{ 1801{
554 WL head; 1802 WL head;
555 unsigned char events; /* the events watched for */ 1803 unsigned char events; /* the events watched for */
556 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */ 1804 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
557 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1805 unsigned char emask; /* some backends store the actual kernel mask in here */
558 unsigned char unused; 1806 unsigned char unused;
559#if EV_USE_EPOLL 1807#if EV_USE_EPOLL
560 unsigned int egen; /* generation counter to counter epoll bugs */ 1808 unsigned int egen; /* generation counter to counter epoll bugs */
561#endif 1809#endif
562#if EV_SELECT_IS_WINSOCKET 1810#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
563 SOCKET handle; 1811 SOCKET handle;
1812#endif
1813#if EV_USE_IOCP
1814 OVERLAPPED or, ow;
564#endif 1815#endif
565} ANFD; 1816} ANFD;
566 1817
567/* stores the pending event set for a given watcher */ 1818/* stores the pending event set for a given watcher */
568typedef struct 1819typedef struct
… …
610 #undef VAR 1861 #undef VAR
611 }; 1862 };
612 #include "ev_wrap.h" 1863 #include "ev_wrap.h"
613 1864
614 static struct ev_loop default_loop_struct; 1865 static struct ev_loop default_loop_struct;
615 struct ev_loop *ev_default_loop_ptr; 1866 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
616 1867
617#else 1868#else
618 1869
619 ev_tstamp ev_rt_now; 1870 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
620 #define VAR(name,decl) static decl; 1871 #define VAR(name,decl) static decl;
621 #include "ev_vars.h" 1872 #include "ev_vars.h"
622 #undef VAR 1873 #undef VAR
623 1874
624 static int ev_default_loop_ptr; 1875 static int ev_default_loop_ptr;
625 1876
626#endif 1877#endif
627 1878
628#if EV_MINIMAL < 2 1879#if EV_FEATURE_API
629# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 1880# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
630# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 1881# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
631# define EV_INVOKE_PENDING invoke_cb (EV_A) 1882# define EV_INVOKE_PENDING invoke_cb (EV_A)
632#else 1883#else
633# define EV_RELEASE_CB (void)0 1884# define EV_RELEASE_CB (void)0
634# define EV_ACQUIRE_CB (void)0 1885# define EV_ACQUIRE_CB (void)0
635# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1886# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
636#endif 1887#endif
637 1888
638#define EVUNLOOP_RECURSE 0x80 1889#define EVBREAK_RECURSE 0x80
639 1890
640/*****************************************************************************/ 1891/*****************************************************************************/
641 1892
642#ifndef EV_HAVE_EV_TIME 1893#ifndef EV_HAVE_EV_TIME
643ev_tstamp 1894ev_tstamp
644ev_time (void) 1895ev_time (void) EV_NOEXCEPT
645{ 1896{
646#if EV_USE_REALTIME 1897#if EV_USE_REALTIME
647 if (expect_true (have_realtime)) 1898 if (expect_true (have_realtime))
648 { 1899 {
649 struct timespec ts; 1900 struct timespec ts;
… …
673 return ev_time (); 1924 return ev_time ();
674} 1925}
675 1926
676#if EV_MULTIPLICITY 1927#if EV_MULTIPLICITY
677ev_tstamp 1928ev_tstamp
678ev_now (EV_P) 1929ev_now (EV_P) EV_NOEXCEPT
679{ 1930{
680 return ev_rt_now; 1931 return ev_rt_now;
681} 1932}
682#endif 1933#endif
683 1934
684void 1935void
685ev_sleep (ev_tstamp delay) 1936ev_sleep (ev_tstamp delay) EV_NOEXCEPT
686{ 1937{
687 if (delay > 0.) 1938 if (delay > 0.)
688 { 1939 {
689#if EV_USE_NANOSLEEP 1940#if EV_USE_NANOSLEEP
690 struct timespec ts; 1941 struct timespec ts;
691 1942
692 ts.tv_sec = (time_t)delay; 1943 EV_TS_SET (ts, delay);
693 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
694
695 nanosleep (&ts, 0); 1944 nanosleep (&ts, 0);
696#elif defined(_WIN32) 1945#elif defined _WIN32
1946 /* maybe this should round up, as ms is very low resolution */
1947 /* compared to select (µs) or nanosleep (ns) */
697 Sleep ((unsigned long)(delay * 1e3)); 1948 Sleep ((unsigned long)(delay * 1e3));
698#else 1949#else
699 struct timeval tv; 1950 struct timeval tv;
700
701 tv.tv_sec = (time_t)delay;
702 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
703 1951
704 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1952 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
705 /* something not guaranteed by newer posix versions, but guaranteed */ 1953 /* something not guaranteed by newer posix versions, but guaranteed */
706 /* by older ones */ 1954 /* by older ones */
1955 EV_TV_SET (tv, delay);
707 select (0, 0, 0, 0, &tv); 1956 select (0, 0, 0, 0, &tv);
708#endif 1957#endif
709 } 1958 }
710} 1959}
711 1960
712/*****************************************************************************/ 1961/*****************************************************************************/
713 1962
714#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1963#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
715 1964
716/* find a suitable new size for the given array, */ 1965/* find a suitable new size for the given array, */
717/* hopefully by rounding to a ncie-to-malloc size */ 1966/* hopefully by rounding to a nice-to-malloc size */
718inline_size int 1967inline_size int
719array_nextsize (int elem, int cur, int cnt) 1968array_nextsize (int elem, int cur, int cnt)
720{ 1969{
721 int ncur = cur + 1; 1970 int ncur = cur + 1;
722 1971
723 do 1972 do
724 ncur <<= 1; 1973 ncur <<= 1;
725 while (cnt > ncur); 1974 while (cnt > ncur);
726 1975
727 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1976 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
728 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1977 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
729 { 1978 {
730 ncur *= elem; 1979 ncur *= elem;
731 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1980 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
732 ncur = ncur - sizeof (void *) * 4; 1981 ncur = ncur - sizeof (void *) * 4;
… …
734 } 1983 }
735 1984
736 return ncur; 1985 return ncur;
737} 1986}
738 1987
739static noinline void * 1988noinline ecb_cold
1989static void *
740array_realloc (int elem, void *base, int *cur, int cnt) 1990array_realloc (int elem, void *base, int *cur, int cnt)
741{ 1991{
742 *cur = array_nextsize (elem, *cur, cnt); 1992 *cur = array_nextsize (elem, *cur, cnt);
743 return ev_realloc (base, elem * *cur); 1993 return ev_realloc (base, elem * *cur);
744} 1994}
745 1995
1996#define array_needsize_noinit(base,offset,count)
1997
746#define array_init_zero(base,count) \ 1998#define array_needsize_zerofill(base,offset,count) \
747 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1999 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
748 2000
749#define array_needsize(type,base,cur,cnt,init) \ 2001#define array_needsize(type,base,cur,cnt,init) \
750 if (expect_false ((cnt) > (cur))) \ 2002 if (expect_false ((cnt) > (cur))) \
751 { \ 2003 { \
752 int ocur_ = (cur); \ 2004 ecb_unused int ocur_ = (cur); \
753 (base) = (type *)array_realloc \ 2005 (base) = (type *)array_realloc \
754 (sizeof (type), (base), &(cur), (cnt)); \ 2006 (sizeof (type), (base), &(cur), (cnt)); \
755 init ((base) + (ocur_), (cur) - ocur_); \ 2007 init ((base), ocur_, ((cur) - ocur_)); \
756 } 2008 }
757 2009
758#if 0 2010#if 0
759#define array_slim(type,stem) \ 2011#define array_slim(type,stem) \
760 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2012 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
… …
769 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 2021 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
770 2022
771/*****************************************************************************/ 2023/*****************************************************************************/
772 2024
773/* dummy callback for pending events */ 2025/* dummy callback for pending events */
774static void noinline 2026noinline
2027static void
775pendingcb (EV_P_ ev_prepare *w, int revents) 2028pendingcb (EV_P_ ev_prepare *w, int revents)
776{ 2029{
777} 2030}
778 2031
779void noinline 2032noinline
2033void
780ev_feed_event (EV_P_ void *w, int revents) 2034ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
781{ 2035{
782 W w_ = (W)w; 2036 W w_ = (W)w;
783 int pri = ABSPRI (w_); 2037 int pri = ABSPRI (w_);
784 2038
785 if (expect_false (w_->pending)) 2039 if (expect_false (w_->pending))
786 pendings [pri][w_->pending - 1].events |= revents; 2040 pendings [pri][w_->pending - 1].events |= revents;
787 else 2041 else
788 { 2042 {
789 w_->pending = ++pendingcnt [pri]; 2043 w_->pending = ++pendingcnt [pri];
790 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2044 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
791 pendings [pri][w_->pending - 1].w = w_; 2045 pendings [pri][w_->pending - 1].w = w_;
792 pendings [pri][w_->pending - 1].events = revents; 2046 pendings [pri][w_->pending - 1].events = revents;
793 } 2047 }
2048
2049 pendingpri = NUMPRI - 1;
794} 2050}
795 2051
796inline_speed void 2052inline_speed void
797feed_reverse (EV_P_ W w) 2053feed_reverse (EV_P_ W w)
798{ 2054{
799 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2055 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
800 rfeeds [rfeedcnt++] = w; 2056 rfeeds [rfeedcnt++] = w;
801} 2057}
802 2058
803inline_size void 2059inline_size void
804feed_reverse_done (EV_P_ int revents) 2060feed_reverse_done (EV_P_ int revents)
… …
818} 2074}
819 2075
820/*****************************************************************************/ 2076/*****************************************************************************/
821 2077
822inline_speed void 2078inline_speed void
823fd_event_nc (EV_P_ int fd, int revents) 2079fd_event_nocheck (EV_P_ int fd, int revents)
824{ 2080{
825 ANFD *anfd = anfds + fd; 2081 ANFD *anfd = anfds + fd;
826 ev_io *w; 2082 ev_io *w;
827 2083
828 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2084 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
840fd_event (EV_P_ int fd, int revents) 2096fd_event (EV_P_ int fd, int revents)
841{ 2097{
842 ANFD *anfd = anfds + fd; 2098 ANFD *anfd = anfds + fd;
843 2099
844 if (expect_true (!anfd->reify)) 2100 if (expect_true (!anfd->reify))
845 fd_event_nc (EV_A_ fd, revents); 2101 fd_event_nocheck (EV_A_ fd, revents);
846} 2102}
847 2103
848void 2104void
849ev_feed_fd_event (EV_P_ int fd, int revents) 2105ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
850{ 2106{
851 if (fd >= 0 && fd < anfdmax) 2107 if (fd >= 0 && fd < anfdmax)
852 fd_event_nc (EV_A_ fd, revents); 2108 fd_event_nocheck (EV_A_ fd, revents);
853} 2109}
854 2110
855/* make sure the external fd watch events are in-sync */ 2111/* make sure the external fd watch events are in-sync */
856/* with the kernel/libev internal state */ 2112/* with the kernel/libev internal state */
857inline_size void 2113inline_size void
858fd_reify (EV_P) 2114fd_reify (EV_P)
859{ 2115{
860 int i; 2116 int i;
861 2117
2118#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
2119 for (i = 0; i < fdchangecnt; ++i)
2120 {
2121 int fd = fdchanges [i];
2122 ANFD *anfd = anfds + fd;
2123
2124 if (anfd->reify & EV__IOFDSET && anfd->head)
2125 {
2126 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
2127
2128 if (handle != anfd->handle)
2129 {
2130 unsigned long arg;
2131
2132 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
2133
2134 /* handle changed, but fd didn't - we need to do it in two steps */
2135 backend_modify (EV_A_ fd, anfd->events, 0);
2136 anfd->events = 0;
2137 anfd->handle = handle;
2138 }
2139 }
2140 }
2141#endif
2142
862 for (i = 0; i < fdchangecnt; ++i) 2143 for (i = 0; i < fdchangecnt; ++i)
863 { 2144 {
864 int fd = fdchanges [i]; 2145 int fd = fdchanges [i];
865 ANFD *anfd = anfds + fd; 2146 ANFD *anfd = anfds + fd;
866 ev_io *w; 2147 ev_io *w;
867 2148
868 unsigned char events = 0; 2149 unsigned char o_events = anfd->events;
2150 unsigned char o_reify = anfd->reify;
869 2151
870 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2152 anfd->reify = 0;
871 events |= (unsigned char)w->events;
872 2153
873#if EV_SELECT_IS_WINSOCKET 2154 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
874 if (events)
875 { 2155 {
876 unsigned long arg; 2156 anfd->events = 0;
877 #ifdef EV_FD_TO_WIN32_HANDLE 2157
878 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 2158 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
879 #else 2159 anfd->events |= (unsigned char)w->events;
880 anfd->handle = _get_osfhandle (fd); 2160
881 #endif 2161 if (o_events != anfd->events)
882 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 2162 o_reify = EV__IOFDSET; /* actually |= */
883 } 2163 }
884#endif
885 2164
886 { 2165 if (o_reify & EV__IOFDSET)
887 unsigned char o_events = anfd->events;
888 unsigned char o_reify = anfd->reify;
889
890 anfd->reify = 0;
891 anfd->events = events;
892
893 if (o_events != events || o_reify & EV__IOFDSET)
894 backend_modify (EV_A_ fd, o_events, events); 2166 backend_modify (EV_A_ fd, o_events, anfd->events);
895 }
896 } 2167 }
897 2168
898 fdchangecnt = 0; 2169 fdchangecnt = 0;
899} 2170}
900 2171
901/* something about the given fd changed */ 2172/* something about the given fd changed */
902inline_size void 2173inline_size
2174void
903fd_change (EV_P_ int fd, int flags) 2175fd_change (EV_P_ int fd, int flags)
904{ 2176{
905 unsigned char reify = anfds [fd].reify; 2177 unsigned char reify = anfds [fd].reify;
906 anfds [fd].reify |= flags; 2178 anfds [fd].reify |= flags;
907 2179
908 if (expect_true (!reify)) 2180 if (expect_true (!reify))
909 { 2181 {
910 ++fdchangecnt; 2182 ++fdchangecnt;
911 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2183 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
912 fdchanges [fdchangecnt - 1] = fd; 2184 fdchanges [fdchangecnt - 1] = fd;
913 } 2185 }
914} 2186}
915 2187
916/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2188/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
917inline_speed void 2189inline_speed ecb_cold void
918fd_kill (EV_P_ int fd) 2190fd_kill (EV_P_ int fd)
919{ 2191{
920 ev_io *w; 2192 ev_io *w;
921 2193
922 while ((w = (ev_io *)anfds [fd].head)) 2194 while ((w = (ev_io *)anfds [fd].head))
… …
924 ev_io_stop (EV_A_ w); 2196 ev_io_stop (EV_A_ w);
925 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2197 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
926 } 2198 }
927} 2199}
928 2200
929/* check whether the given fd is atcually valid, for error recovery */ 2201/* check whether the given fd is actually valid, for error recovery */
930inline_size int 2202inline_size ecb_cold int
931fd_valid (int fd) 2203fd_valid (int fd)
932{ 2204{
933#ifdef _WIN32 2205#ifdef _WIN32
934 return _get_osfhandle (fd) != -1; 2206 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
935#else 2207#else
936 return fcntl (fd, F_GETFD) != -1; 2208 return fcntl (fd, F_GETFD) != -1;
937#endif 2209#endif
938} 2210}
939 2211
940/* called on EBADF to verify fds */ 2212/* called on EBADF to verify fds */
941static void noinline 2213noinline ecb_cold
2214static void
942fd_ebadf (EV_P) 2215fd_ebadf (EV_P)
943{ 2216{
944 int fd; 2217 int fd;
945 2218
946 for (fd = 0; fd < anfdmax; ++fd) 2219 for (fd = 0; fd < anfdmax; ++fd)
… …
948 if (!fd_valid (fd) && errno == EBADF) 2221 if (!fd_valid (fd) && errno == EBADF)
949 fd_kill (EV_A_ fd); 2222 fd_kill (EV_A_ fd);
950} 2223}
951 2224
952/* called on ENOMEM in select/poll to kill some fds and retry */ 2225/* called on ENOMEM in select/poll to kill some fds and retry */
953static void noinline 2226noinline ecb_cold
2227static void
954fd_enomem (EV_P) 2228fd_enomem (EV_P)
955{ 2229{
956 int fd; 2230 int fd;
957 2231
958 for (fd = anfdmax; fd--; ) 2232 for (fd = anfdmax; fd--; )
… …
962 break; 2236 break;
963 } 2237 }
964} 2238}
965 2239
966/* usually called after fork if backend needs to re-arm all fds from scratch */ 2240/* usually called after fork if backend needs to re-arm all fds from scratch */
967static void noinline 2241noinline
2242static void
968fd_rearm_all (EV_P) 2243fd_rearm_all (EV_P)
969{ 2244{
970 int fd; 2245 int fd;
971 2246
972 for (fd = 0; fd < anfdmax; ++fd) 2247 for (fd = 0; fd < anfdmax; ++fd)
… …
976 anfds [fd].emask = 0; 2251 anfds [fd].emask = 0;
977 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); 2252 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
978 } 2253 }
979} 2254}
980 2255
2256/* used to prepare libev internal fd's */
2257/* this is not fork-safe */
2258inline_speed void
2259fd_intern (int fd)
2260{
2261#ifdef _WIN32
2262 unsigned long arg = 1;
2263 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
2264#else
2265 fcntl (fd, F_SETFD, FD_CLOEXEC);
2266 fcntl (fd, F_SETFL, O_NONBLOCK);
2267#endif
2268}
2269
981/*****************************************************************************/ 2270/*****************************************************************************/
982 2271
983/* 2272/*
984 * the heap functions want a real array index. array index 0 uis guaranteed to not 2273 * the heap functions want a real array index. array index 0 is guaranteed to not
985 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 2274 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
986 * the branching factor of the d-tree. 2275 * the branching factor of the d-tree.
987 */ 2276 */
988 2277
989/* 2278/*
… …
1057 2346
1058 for (;;) 2347 for (;;)
1059 { 2348 {
1060 int c = k << 1; 2349 int c = k << 1;
1061 2350
1062 if (c > N + HEAP0 - 1) 2351 if (c >= N + HEAP0)
1063 break; 2352 break;
1064 2353
1065 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 2354 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
1066 ? 1 : 0; 2355 ? 1 : 0;
1067 2356
… …
1103 2392
1104/* move an element suitably so it is in a correct place */ 2393/* move an element suitably so it is in a correct place */
1105inline_size void 2394inline_size void
1106adjustheap (ANHE *heap, int N, int k) 2395adjustheap (ANHE *heap, int N, int k)
1107{ 2396{
1108 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 2397 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1109 upheap (heap, k); 2398 upheap (heap, k);
1110 else 2399 else
1111 downheap (heap, N, k); 2400 downheap (heap, N, k);
1112} 2401}
1113 2402
… …
1137 2426
1138static ANSIG signals [EV_NSIG - 1]; 2427static ANSIG signals [EV_NSIG - 1];
1139 2428
1140/*****************************************************************************/ 2429/*****************************************************************************/
1141 2430
1142/* used to prepare libev internal fd's */ 2431#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1143/* this is not fork-safe */ 2432
2433noinline ecb_cold
2434static void
2435evpipe_init (EV_P)
2436{
2437 if (!ev_is_active (&pipe_w))
2438 {
2439 int fds [2];
2440
2441# if EV_USE_EVENTFD
2442 fds [0] = -1;
2443 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
2444 if (fds [1] < 0 && errno == EINVAL)
2445 fds [1] = eventfd (0, 0);
2446
2447 if (fds [1] < 0)
2448# endif
2449 {
2450 while (pipe (fds))
2451 ev_syserr ("(libev) error creating signal/async pipe");
2452
2453 fd_intern (fds [0]);
2454 }
2455
2456 evpipe [0] = fds [0];
2457
2458 if (evpipe [1] < 0)
2459 evpipe [1] = fds [1]; /* first call, set write fd */
2460 else
2461 {
2462 /* on subsequent calls, do not change evpipe [1] */
2463 /* so that evpipe_write can always rely on its value. */
2464 /* this branch does not do anything sensible on windows, */
2465 /* so must not be executed on windows */
2466
2467 dup2 (fds [1], evpipe [1]);
2468 close (fds [1]);
2469 }
2470
2471 fd_intern (evpipe [1]);
2472
2473 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2474 ev_io_start (EV_A_ &pipe_w);
2475 ev_unref (EV_A); /* watcher should not keep loop alive */
2476 }
2477}
2478
1144inline_speed void 2479inline_speed void
1145fd_intern (int fd) 2480evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1146{ 2481{
1147#ifdef _WIN32 2482 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1148 unsigned long arg = 1;
1149 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1150#else
1151 fcntl (fd, F_SETFD, FD_CLOEXEC);
1152 fcntl (fd, F_SETFL, O_NONBLOCK);
1153#endif
1154}
1155 2483
1156static void noinline 2484 if (expect_true (*flag))
1157evpipe_init (EV_P) 2485 return;
1158{ 2486
1159 if (!ev_is_active (&pipe_w)) 2487 *flag = 1;
2488 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2489
2490 pipe_write_skipped = 1;
2491
2492 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2493
2494 if (pipe_write_wanted)
1160 { 2495 {
2496 int old_errno;
2497
2498 pipe_write_skipped = 0;
2499 ECB_MEMORY_FENCE_RELEASE;
2500
2501 old_errno = errno; /* save errno because write will clobber it */
2502
1161#if EV_USE_EVENTFD 2503#if EV_USE_EVENTFD
1162 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2504 if (evpipe [0] < 0)
1163 if (evfd < 0 && errno == EINVAL)
1164 evfd = eventfd (0, 0);
1165
1166 if (evfd >= 0)
1167 { 2505 {
1168 evpipe [0] = -1; 2506 uint64_t counter = 1;
1169 fd_intern (evfd); /* doing it twice doesn't hurt */ 2507 write (evpipe [1], &counter, sizeof (uint64_t));
1170 ev_io_set (&pipe_w, evfd, EV_READ);
1171 } 2508 }
1172 else 2509 else
1173#endif 2510#endif
1174 { 2511 {
1175 while (pipe (evpipe)) 2512#ifdef _WIN32
1176 ev_syserr ("(libev) error creating signal/async pipe"); 2513 WSABUF buf;
1177 2514 DWORD sent;
1178 fd_intern (evpipe [0]); 2515 buf.buf = (char *)&buf;
1179 fd_intern (evpipe [1]); 2516 buf.len = 1;
1180 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2517 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2518#else
2519 write (evpipe [1], &(evpipe [1]), 1);
2520#endif
1181 } 2521 }
1182
1183 ev_io_start (EV_A_ &pipe_w);
1184 ev_unref (EV_A); /* watcher should not keep loop alive */
1185 }
1186}
1187
1188inline_size void
1189evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1190{
1191 if (!*flag)
1192 {
1193 int old_errno = errno; /* save errno because write might clobber it */
1194
1195 *flag = 1;
1196
1197#if EV_USE_EVENTFD
1198 if (evfd >= 0)
1199 {
1200 uint64_t counter = 1;
1201 write (evfd, &counter, sizeof (uint64_t));
1202 }
1203 else
1204#endif
1205 write (evpipe [1], &old_errno, 1);
1206 2522
1207 errno = old_errno; 2523 errno = old_errno;
1208 } 2524 }
1209} 2525}
1210 2526
… …
1213static void 2529static void
1214pipecb (EV_P_ ev_io *iow, int revents) 2530pipecb (EV_P_ ev_io *iow, int revents)
1215{ 2531{
1216 int i; 2532 int i;
1217 2533
2534 if (revents & EV_READ)
2535 {
1218#if EV_USE_EVENTFD 2536#if EV_USE_EVENTFD
1219 if (evfd >= 0) 2537 if (evpipe [0] < 0)
1220 { 2538 {
1221 uint64_t counter; 2539 uint64_t counter;
1222 read (evfd, &counter, sizeof (uint64_t)); 2540 read (evpipe [1], &counter, sizeof (uint64_t));
1223 } 2541 }
1224 else 2542 else
1225#endif 2543#endif
1226 { 2544 {
1227 char dummy; 2545 char dummy[4];
2546#ifdef _WIN32
2547 WSABUF buf;
2548 DWORD recvd;
2549 DWORD flags = 0;
2550 buf.buf = dummy;
2551 buf.len = sizeof (dummy);
2552 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2553#else
1228 read (evpipe [0], &dummy, 1); 2554 read (evpipe [0], &dummy, sizeof (dummy));
2555#endif
2556 }
1229 } 2557 }
1230 2558
2559 pipe_write_skipped = 0;
2560
2561 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2562
2563#if EV_SIGNAL_ENABLE
1231 if (sig_pending) 2564 if (sig_pending)
1232 { 2565 {
1233 sig_pending = 0; 2566 sig_pending = 0;
2567
2568 ECB_MEMORY_FENCE;
1234 2569
1235 for (i = EV_NSIG - 1; i--; ) 2570 for (i = EV_NSIG - 1; i--; )
1236 if (expect_false (signals [i].pending)) 2571 if (expect_false (signals [i].pending))
1237 ev_feed_signal_event (EV_A_ i + 1); 2572 ev_feed_signal_event (EV_A_ i + 1);
1238 } 2573 }
2574#endif
1239 2575
1240#if EV_ASYNC_ENABLE 2576#if EV_ASYNC_ENABLE
1241 if (async_pending) 2577 if (async_pending)
1242 { 2578 {
1243 async_pending = 0; 2579 async_pending = 0;
2580
2581 ECB_MEMORY_FENCE;
1244 2582
1245 for (i = asynccnt; i--; ) 2583 for (i = asynccnt; i--; )
1246 if (asyncs [i]->sent) 2584 if (asyncs [i]->sent)
1247 { 2585 {
1248 asyncs [i]->sent = 0; 2586 asyncs [i]->sent = 0;
2587 ECB_MEMORY_FENCE_RELEASE;
1249 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2588 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1250 } 2589 }
1251 } 2590 }
1252#endif 2591#endif
1253} 2592}
1254 2593
1255/*****************************************************************************/ 2594/*****************************************************************************/
1256 2595
2596void
2597ev_feed_signal (int signum) EV_NOEXCEPT
2598{
2599#if EV_MULTIPLICITY
2600 EV_P;
2601 ECB_MEMORY_FENCE_ACQUIRE;
2602 EV_A = signals [signum - 1].loop;
2603
2604 if (!EV_A)
2605 return;
2606#endif
2607
2608 signals [signum - 1].pending = 1;
2609 evpipe_write (EV_A_ &sig_pending);
2610}
2611
1257static void 2612static void
1258ev_sighandler (int signum) 2613ev_sighandler (int signum)
1259{ 2614{
1260#if EV_MULTIPLICITY
1261 EV_P = signals [signum - 1].loop;
1262#endif
1263
1264#if _WIN32 2615#ifdef _WIN32
1265 signal (signum, ev_sighandler); 2616 signal (signum, ev_sighandler);
1266#endif 2617#endif
1267 2618
1268 signals [signum - 1].pending = 1; 2619 ev_feed_signal (signum);
1269 evpipe_write (EV_A_ &sig_pending);
1270} 2620}
1271 2621
1272void noinline 2622noinline
2623void
1273ev_feed_signal_event (EV_P_ int signum) 2624ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
1274{ 2625{
1275 WL w; 2626 WL w;
1276 2627
1277 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2628 if (expect_false (signum <= 0 || signum >= EV_NSIG))
1278 return; 2629 return;
1279 2630
1280 --signum; 2631 --signum;
1281 2632
1282#if EV_MULTIPLICITY 2633#if EV_MULTIPLICITY
… …
1286 if (expect_false (signals [signum].loop != EV_A)) 2637 if (expect_false (signals [signum].loop != EV_A))
1287 return; 2638 return;
1288#endif 2639#endif
1289 2640
1290 signals [signum].pending = 0; 2641 signals [signum].pending = 0;
2642 ECB_MEMORY_FENCE_RELEASE;
1291 2643
1292 for (w = signals [signum].head; w; w = w->next) 2644 for (w = signals [signum].head; w; w = w->next)
1293 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2645 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1294} 2646}
1295 2647
… …
1311 break; 2663 break;
1312 } 2664 }
1313} 2665}
1314#endif 2666#endif
1315 2667
2668#endif
2669
1316/*****************************************************************************/ 2670/*****************************************************************************/
1317 2671
2672#if EV_CHILD_ENABLE
1318static WL childs [EV_PID_HASHSIZE]; 2673static WL childs [EV_PID_HASHSIZE];
1319
1320#ifndef _WIN32
1321 2674
1322static ev_signal childev; 2675static ev_signal childev;
1323 2676
1324#ifndef WIFCONTINUED 2677#ifndef WIFCONTINUED
1325# define WIFCONTINUED(status) 0 2678# define WIFCONTINUED(status) 0
… …
1330child_reap (EV_P_ int chain, int pid, int status) 2683child_reap (EV_P_ int chain, int pid, int status)
1331{ 2684{
1332 ev_child *w; 2685 ev_child *w;
1333 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2686 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1334 2687
1335 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2688 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1336 { 2689 {
1337 if ((w->pid == pid || !w->pid) 2690 if ((w->pid == pid || !w->pid)
1338 && (!traced || (w->flags & 1))) 2691 && (!traced || (w->flags & 1)))
1339 { 2692 {
1340 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2693 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1365 /* make sure we are called again until all children have been reaped */ 2718 /* make sure we are called again until all children have been reaped */
1366 /* we need to do it this way so that the callback gets called before we continue */ 2719 /* we need to do it this way so that the callback gets called before we continue */
1367 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2720 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1368 2721
1369 child_reap (EV_A_ pid, pid, status); 2722 child_reap (EV_A_ pid, pid, status);
1370 if (EV_PID_HASHSIZE > 1) 2723 if ((EV_PID_HASHSIZE) > 1)
1371 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2724 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1372} 2725}
1373 2726
1374#endif 2727#endif
1375 2728
1376/*****************************************************************************/ 2729/*****************************************************************************/
1377 2730
2731#if EV_USE_IOCP
2732# include "ev_iocp.c"
2733#endif
1378#if EV_USE_PORT 2734#if EV_USE_PORT
1379# include "ev_port.c" 2735# include "ev_port.c"
1380#endif 2736#endif
1381#if EV_USE_KQUEUE 2737#if EV_USE_KQUEUE
1382# include "ev_kqueue.c" 2738# include "ev_kqueue.c"
1383#endif 2739#endif
1384#if EV_USE_EPOLL 2740#if EV_USE_EPOLL
1385# include "ev_epoll.c" 2741# include "ev_epoll.c"
1386#endif 2742#endif
2743#if EV_USE_LINUXAIO
2744# include "ev_linuxaio.c"
2745#endif
1387#if EV_USE_POLL 2746#if EV_USE_POLL
1388# include "ev_poll.c" 2747# include "ev_poll.c"
1389#endif 2748#endif
1390#if EV_USE_SELECT 2749#if EV_USE_SELECT
1391# include "ev_select.c" 2750# include "ev_select.c"
1392#endif 2751#endif
1393 2752
1394int 2753ecb_cold int
1395ev_version_major (void) 2754ev_version_major (void) EV_NOEXCEPT
1396{ 2755{
1397 return EV_VERSION_MAJOR; 2756 return EV_VERSION_MAJOR;
1398} 2757}
1399 2758
1400int 2759ecb_cold int
1401ev_version_minor (void) 2760ev_version_minor (void) EV_NOEXCEPT
1402{ 2761{
1403 return EV_VERSION_MINOR; 2762 return EV_VERSION_MINOR;
1404} 2763}
1405 2764
1406/* return true if we are running with elevated privileges and should ignore env variables */ 2765/* return true if we are running with elevated privileges and should ignore env variables */
1407int inline_size 2766inline_size ecb_cold int
1408enable_secure (void) 2767enable_secure (void)
1409{ 2768{
1410#ifdef _WIN32 2769#ifdef _WIN32
1411 return 0; 2770 return 0;
1412#else 2771#else
1413 return getuid () != geteuid () 2772 return getuid () != geteuid ()
1414 || getgid () != getegid (); 2773 || getgid () != getegid ();
1415#endif 2774#endif
1416} 2775}
1417 2776
2777ecb_cold
1418unsigned int 2778unsigned int
1419ev_supported_backends (void) 2779ev_supported_backends (void) EV_NOEXCEPT
1420{ 2780{
1421 unsigned int flags = 0; 2781 unsigned int flags = 0;
1422 2782
1423 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2783 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1424 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2784 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
1425 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 2785 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2786 if (EV_USE_LINUXAIO) flags |= EVBACKEND_LINUXAIO;
1426 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 2787 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
1427 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2788 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
1428 2789
1429 return flags; 2790 return flags;
1430} 2791}
1431 2792
2793ecb_cold
1432unsigned int 2794unsigned int
1433ev_recommended_backends (void) 2795ev_recommended_backends (void) EV_NOEXCEPT
1434{ 2796{
1435 unsigned int flags = ev_supported_backends (); 2797 unsigned int flags = ev_supported_backends ();
1436 2798
1437#ifndef __NetBSD__ 2799#ifndef __NetBSD__
1438 /* kqueue is borked on everything but netbsd apparently */ 2800 /* kqueue is borked on everything but netbsd apparently */
… …
1442#ifdef __APPLE__ 2804#ifdef __APPLE__
1443 /* only select works correctly on that "unix-certified" platform */ 2805 /* only select works correctly on that "unix-certified" platform */
1444 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2806 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1445 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 2807 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1446#endif 2808#endif
2809#ifdef __FreeBSD__
2810 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2811#endif
2812
2813 /* TODO: linuxaio is very experimental */
2814#if !EV_RECOMMEND_LINUXAIO
2815 flags &= ~EVBACKEND_LINUXAIO;
2816#endif
1447 2817
1448 return flags; 2818 return flags;
1449} 2819}
1450 2820
2821ecb_cold
1451unsigned int 2822unsigned int
1452ev_embeddable_backends (void) 2823ev_embeddable_backends (void) EV_NOEXCEPT
1453{ 2824{
1454 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2825 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1455 2826
1456 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2827 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1457 /* please fix it and tell me how to detect the fix */ 2828 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1458 flags &= ~EVBACKEND_EPOLL; 2829 flags &= ~EVBACKEND_EPOLL;
1459 2830
1460 return flags; 2831 return flags;
1461} 2832}
1462 2833
1463unsigned int 2834unsigned int
1464ev_backend (EV_P) 2835ev_backend (EV_P) EV_NOEXCEPT
1465{ 2836{
1466 return backend; 2837 return backend;
1467} 2838}
1468 2839
1469#if EV_MINIMAL < 2 2840#if EV_FEATURE_API
1470unsigned int 2841unsigned int
1471ev_loop_count (EV_P) 2842ev_iteration (EV_P) EV_NOEXCEPT
1472{ 2843{
1473 return loop_count; 2844 return loop_count;
1474} 2845}
1475 2846
1476unsigned int 2847unsigned int
1477ev_loop_depth (EV_P) 2848ev_depth (EV_P) EV_NOEXCEPT
1478{ 2849{
1479 return loop_depth; 2850 return loop_depth;
1480} 2851}
1481 2852
1482void 2853void
1483ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2854ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1484{ 2855{
1485 io_blocktime = interval; 2856 io_blocktime = interval;
1486} 2857}
1487 2858
1488void 2859void
1489ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2860ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1490{ 2861{
1491 timeout_blocktime = interval; 2862 timeout_blocktime = interval;
1492} 2863}
1493 2864
1494void 2865void
1495ev_set_userdata (EV_P_ void *data) 2866ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
1496{ 2867{
1497 userdata = data; 2868 userdata = data;
1498} 2869}
1499 2870
1500void * 2871void *
1501ev_userdata (EV_P) 2872ev_userdata (EV_P) EV_NOEXCEPT
1502{ 2873{
1503 return userdata; 2874 return userdata;
1504} 2875}
1505 2876
2877void
1506void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2878ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
1507{ 2879{
1508 invoke_cb = invoke_pending_cb; 2880 invoke_cb = invoke_pending_cb;
1509} 2881}
1510 2882
2883void
1511void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2884ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
1512{ 2885{
1513 release_cb = release; 2886 release_cb = release;
1514 acquire_cb = acquire; 2887 acquire_cb = acquire;
1515} 2888}
1516#endif 2889#endif
1517 2890
1518/* initialise a loop structure, must be zero-initialised */ 2891/* initialise a loop structure, must be zero-initialised */
1519static void noinline 2892noinline ecb_cold
2893static void
1520loop_init (EV_P_ unsigned int flags) 2894loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
1521{ 2895{
1522 if (!backend) 2896 if (!backend)
1523 { 2897 {
2898 origflags = flags;
2899
1524#if EV_USE_REALTIME 2900#if EV_USE_REALTIME
1525 if (!have_realtime) 2901 if (!have_realtime)
1526 { 2902 {
1527 struct timespec ts; 2903 struct timespec ts;
1528 2904
… …
1550 if (!(flags & EVFLAG_NOENV) 2926 if (!(flags & EVFLAG_NOENV)
1551 && !enable_secure () 2927 && !enable_secure ()
1552 && getenv ("LIBEV_FLAGS")) 2928 && getenv ("LIBEV_FLAGS"))
1553 flags = atoi (getenv ("LIBEV_FLAGS")); 2929 flags = atoi (getenv ("LIBEV_FLAGS"));
1554 2930
1555 ev_rt_now = ev_time (); 2931 ev_rt_now = ev_time ();
1556 mn_now = get_clock (); 2932 mn_now = get_clock ();
1557 now_floor = mn_now; 2933 now_floor = mn_now;
1558 rtmn_diff = ev_rt_now - mn_now; 2934 rtmn_diff = ev_rt_now - mn_now;
1559#if EV_MINIMAL < 2 2935#if EV_FEATURE_API
1560 invoke_cb = ev_invoke_pending; 2936 invoke_cb = ev_invoke_pending;
1561#endif 2937#endif
1562 2938
1563 io_blocktime = 0.; 2939 io_blocktime = 0.;
1564 timeout_blocktime = 0.; 2940 timeout_blocktime = 0.;
1565 backend = 0; 2941 backend = 0;
1566 backend_fd = -1; 2942 backend_fd = -1;
1567 sig_pending = 0; 2943 sig_pending = 0;
1568#if EV_ASYNC_ENABLE 2944#if EV_ASYNC_ENABLE
1569 async_pending = 0; 2945 async_pending = 0;
1570#endif 2946#endif
2947 pipe_write_skipped = 0;
2948 pipe_write_wanted = 0;
2949 evpipe [0] = -1;
2950 evpipe [1] = -1;
1571#if EV_USE_INOTIFY 2951#if EV_USE_INOTIFY
1572 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2952 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1573#endif 2953#endif
1574#if EV_USE_SIGNALFD 2954#if EV_USE_SIGNALFD
1575 sigfd = flags & EVFLAG_NOSIGFD ? -1 : -2; 2955 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1576#endif 2956#endif
1577 2957
1578 if (!(flags & 0x0000ffffU)) 2958 if (!(flags & EVBACKEND_MASK))
1579 flags |= ev_recommended_backends (); 2959 flags |= ev_recommended_backends ();
1580 2960
2961#if EV_USE_IOCP
2962 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2963#endif
1581#if EV_USE_PORT 2964#if EV_USE_PORT
1582 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2965 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1583#endif 2966#endif
1584#if EV_USE_KQUEUE 2967#if EV_USE_KQUEUE
1585 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2968 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
2969#endif
2970#if EV_USE_LINUXAIO
2971 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
1586#endif 2972#endif
1587#if EV_USE_EPOLL 2973#if EV_USE_EPOLL
1588 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 2974 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
1589#endif 2975#endif
1590#if EV_USE_POLL 2976#if EV_USE_POLL
1591 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 2977 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
1592#endif 2978#endif
1593#if EV_USE_SELECT 2979#if EV_USE_SELECT
1594 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2980 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
1595#endif 2981#endif
1596 2982
1597 ev_prepare_init (&pending_w, pendingcb); 2983 ev_prepare_init (&pending_w, pendingcb);
1598 2984
2985#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1599 ev_init (&pipe_w, pipecb); 2986 ev_init (&pipe_w, pipecb);
1600 ev_set_priority (&pipe_w, EV_MAXPRI); 2987 ev_set_priority (&pipe_w, EV_MAXPRI);
2988#endif
1601 } 2989 }
1602} 2990}
1603 2991
1604/* free up a loop structure */ 2992/* free up a loop structure */
1605static void noinline 2993ecb_cold
2994void
1606loop_destroy (EV_P) 2995ev_loop_destroy (EV_P)
1607{ 2996{
1608 int i; 2997 int i;
2998
2999#if EV_MULTIPLICITY
3000 /* mimic free (0) */
3001 if (!EV_A)
3002 return;
3003#endif
3004
3005#if EV_CLEANUP_ENABLE
3006 /* queue cleanup watchers (and execute them) */
3007 if (expect_false (cleanupcnt))
3008 {
3009 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
3010 EV_INVOKE_PENDING;
3011 }
3012#endif
3013
3014#if EV_CHILD_ENABLE
3015 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
3016 {
3017 ev_ref (EV_A); /* child watcher */
3018 ev_signal_stop (EV_A_ &childev);
3019 }
3020#endif
1609 3021
1610 if (ev_is_active (&pipe_w)) 3022 if (ev_is_active (&pipe_w))
1611 { 3023 {
1612 /*ev_ref (EV_A);*/ 3024 /*ev_ref (EV_A);*/
1613 /*ev_io_stop (EV_A_ &pipe_w);*/ 3025 /*ev_io_stop (EV_A_ &pipe_w);*/
1614 3026
1615#if EV_USE_EVENTFD 3027 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1616 if (evfd >= 0) 3028 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 } 3029 }
1626 3030
1627#if EV_USE_SIGNALFD 3031#if EV_USE_SIGNALFD
1628 if (ev_is_active (&sigfd_w)) 3032 if (ev_is_active (&sigfd_w))
1629 {
1630 /*ev_ref (EV_A);*/
1631 /*ev_io_stop (EV_A_ &sigfd_w);*/
1632
1633 close (sigfd); 3033 close (sigfd);
1634 }
1635#endif 3034#endif
1636 3035
1637#if EV_USE_INOTIFY 3036#if EV_USE_INOTIFY
1638 if (fs_fd >= 0) 3037 if (fs_fd >= 0)
1639 close (fs_fd); 3038 close (fs_fd);
1640#endif 3039#endif
1641 3040
1642 if (backend_fd >= 0) 3041 if (backend_fd >= 0)
1643 close (backend_fd); 3042 close (backend_fd);
1644 3043
3044#if EV_USE_IOCP
3045 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
3046#endif
1645#if EV_USE_PORT 3047#if EV_USE_PORT
1646 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3048 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1647#endif 3049#endif
1648#if EV_USE_KQUEUE 3050#if EV_USE_KQUEUE
1649 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3051 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
3052#endif
3053#if EV_USE_LINUXAIO
3054 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
1650#endif 3055#endif
1651#if EV_USE_EPOLL 3056#if EV_USE_EPOLL
1652 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3057 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
1653#endif 3058#endif
1654#if EV_USE_POLL 3059#if EV_USE_POLL
1655 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3060 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
1656#endif 3061#endif
1657#if EV_USE_SELECT 3062#if EV_USE_SELECT
1658 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3063 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
1659#endif 3064#endif
1660 3065
1661 for (i = NUMPRI; i--; ) 3066 for (i = NUMPRI; i--; )
1662 { 3067 {
1663 array_free (pending, [i]); 3068 array_free (pending, [i]);
… …
1676 array_free (periodic, EMPTY); 3081 array_free (periodic, EMPTY);
1677#endif 3082#endif
1678#if EV_FORK_ENABLE 3083#if EV_FORK_ENABLE
1679 array_free (fork, EMPTY); 3084 array_free (fork, EMPTY);
1680#endif 3085#endif
3086#if EV_CLEANUP_ENABLE
3087 array_free (cleanup, EMPTY);
3088#endif
1681 array_free (prepare, EMPTY); 3089 array_free (prepare, EMPTY);
1682 array_free (check, EMPTY); 3090 array_free (check, EMPTY);
1683#if EV_ASYNC_ENABLE 3091#if EV_ASYNC_ENABLE
1684 array_free (async, EMPTY); 3092 array_free (async, EMPTY);
1685#endif 3093#endif
1686 3094
1687 backend = 0; 3095 backend = 0;
3096
3097#if EV_MULTIPLICITY
3098 if (ev_is_default_loop (EV_A))
3099#endif
3100 ev_default_loop_ptr = 0;
3101#if EV_MULTIPLICITY
3102 else
3103 ev_free (EV_A);
3104#endif
1688} 3105}
1689 3106
1690#if EV_USE_INOTIFY 3107#if EV_USE_INOTIFY
1691inline_size void infy_fork (EV_P); 3108inline_size void infy_fork (EV_P);
1692#endif 3109#endif
1693 3110
1694inline_size void 3111inline_size void
1695loop_fork (EV_P) 3112loop_fork (EV_P)
1696{ 3113{
1697#if EV_USE_PORT 3114#if EV_USE_PORT
1698 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3115 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1699#endif 3116#endif
1700#if EV_USE_KQUEUE 3117#if EV_USE_KQUEUE
1701 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 3118 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
3119#endif
3120#if EV_USE_LINUXAIO
3121 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
1702#endif 3122#endif
1703#if EV_USE_EPOLL 3123#if EV_USE_EPOLL
1704 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3124 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
1705#endif 3125#endif
1706#if EV_USE_INOTIFY 3126#if EV_USE_INOTIFY
1707 infy_fork (EV_A); 3127 infy_fork (EV_A);
1708#endif 3128#endif
1709 3129
3130#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1710 if (ev_is_active (&pipe_w)) 3131 if (ev_is_active (&pipe_w) && postfork != 2)
1711 { 3132 {
1712 /* this "locks" the handlers against writing to the pipe */ 3133 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1713 /* while we modify the fd vars */
1714 sig_pending = 1;
1715#if EV_ASYNC_ENABLE
1716 async_pending = 1;
1717#endif
1718 3134
1719 ev_ref (EV_A); 3135 ev_ref (EV_A);
1720 ev_io_stop (EV_A_ &pipe_w); 3136 ev_io_stop (EV_A_ &pipe_w);
1721 3137
1722#if EV_USE_EVENTFD
1723 if (evfd >= 0)
1724 close (evfd);
1725#endif
1726
1727 if (evpipe [0] >= 0) 3138 if (evpipe [0] >= 0)
1728 { 3139 EV_WIN32_CLOSE_FD (evpipe [0]);
1729 close (evpipe [0]);
1730 close (evpipe [1]);
1731 }
1732 3140
1733 evpipe_init (EV_A); 3141 evpipe_init (EV_A);
1734 /* now iterate over everything, in case we missed something */ 3142 /* iterate over everything, in case we missed something before */
1735 pipecb (EV_A_ &pipe_w, EV_READ); 3143 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1736 } 3144 }
3145#endif
1737 3146
1738 postfork = 0; 3147 postfork = 0;
1739} 3148}
1740 3149
1741#if EV_MULTIPLICITY 3150#if EV_MULTIPLICITY
1742 3151
3152ecb_cold
1743struct ev_loop * 3153struct ev_loop *
1744ev_loop_new (unsigned int flags) 3154ev_loop_new (unsigned int flags) EV_NOEXCEPT
1745{ 3155{
1746 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3156 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1747 3157
1748 memset (EV_A, 0, sizeof (struct ev_loop)); 3158 memset (EV_A, 0, sizeof (struct ev_loop));
1749 loop_init (EV_A_ flags); 3159 loop_init (EV_A_ flags);
1750 3160
1751 if (ev_backend (EV_A)) 3161 if (ev_backend (EV_A))
1752 return EV_A; 3162 return EV_A;
1753 3163
3164 ev_free (EV_A);
1754 return 0; 3165 return 0;
1755} 3166}
1756 3167
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 */ 3168#endif /* multiplicity */
1770 3169
1771#if EV_VERIFY 3170#if EV_VERIFY
1772static void noinline 3171noinline ecb_cold
3172static void
1773verify_watcher (EV_P_ W w) 3173verify_watcher (EV_P_ W w)
1774{ 3174{
1775 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3175 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1776 3176
1777 if (w->pending) 3177 if (w->pending)
1778 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3178 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1779} 3179}
1780 3180
1781static void noinline 3181noinline ecb_cold
3182static void
1782verify_heap (EV_P_ ANHE *heap, int N) 3183verify_heap (EV_P_ ANHE *heap, int N)
1783{ 3184{
1784 int i; 3185 int i;
1785 3186
1786 for (i = HEAP0; i < N + HEAP0; ++i) 3187 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1791 3192
1792 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3193 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1793 } 3194 }
1794} 3195}
1795 3196
1796static void noinline 3197noinline ecb_cold
3198static void
1797array_verify (EV_P_ W *ws, int cnt) 3199array_verify (EV_P_ W *ws, int cnt)
1798{ 3200{
1799 while (cnt--) 3201 while (cnt--)
1800 { 3202 {
1801 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3203 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1802 verify_watcher (EV_A_ ws [cnt]); 3204 verify_watcher (EV_A_ ws [cnt]);
1803 } 3205 }
1804} 3206}
1805#endif 3207#endif
1806 3208
1807#if EV_MINIMAL < 2 3209#if EV_FEATURE_API
1808void 3210void ecb_cold
1809ev_loop_verify (EV_P) 3211ev_verify (EV_P) EV_NOEXCEPT
1810{ 3212{
1811#if EV_VERIFY 3213#if EV_VERIFY
1812 int i; 3214 int i;
1813 WL w; 3215 WL w, w2;
1814 3216
1815 assert (activecnt >= -1); 3217 assert (activecnt >= -1);
1816 3218
1817 assert (fdchangemax >= fdchangecnt); 3219 assert (fdchangemax >= fdchangecnt);
1818 for (i = 0; i < fdchangecnt; ++i) 3220 for (i = 0; i < fdchangecnt; ++i)
1819 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3221 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1820 3222
1821 assert (anfdmax >= 0); 3223 assert (anfdmax >= 0);
1822 for (i = 0; i < anfdmax; ++i) 3224 for (i = 0; i < anfdmax; ++i)
3225 {
3226 int j = 0;
3227
1823 for (w = anfds [i].head; w; w = w->next) 3228 for (w = w2 = anfds [i].head; w; w = w->next)
1824 { 3229 {
1825 verify_watcher (EV_A_ (W)w); 3230 verify_watcher (EV_A_ (W)w);
3231
3232 if (j++ & 1)
3233 {
3234 assert (("libev: io watcher list contains a loop", w != w2));
3235 w2 = w2->next;
3236 }
3237
1826 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3238 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)); 3239 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1828 } 3240 }
3241 }
1829 3242
1830 assert (timermax >= timercnt); 3243 assert (timermax >= timercnt);
1831 verify_heap (EV_A_ timers, timercnt); 3244 verify_heap (EV_A_ timers, timercnt);
1832 3245
1833#if EV_PERIODIC_ENABLE 3246#if EV_PERIODIC_ENABLE
… …
1848#if EV_FORK_ENABLE 3261#if EV_FORK_ENABLE
1849 assert (forkmax >= forkcnt); 3262 assert (forkmax >= forkcnt);
1850 array_verify (EV_A_ (W *)forks, forkcnt); 3263 array_verify (EV_A_ (W *)forks, forkcnt);
1851#endif 3264#endif
1852 3265
3266#if EV_CLEANUP_ENABLE
3267 assert (cleanupmax >= cleanupcnt);
3268 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
3269#endif
3270
1853#if EV_ASYNC_ENABLE 3271#if EV_ASYNC_ENABLE
1854 assert (asyncmax >= asynccnt); 3272 assert (asyncmax >= asynccnt);
1855 array_verify (EV_A_ (W *)asyncs, asynccnt); 3273 array_verify (EV_A_ (W *)asyncs, asynccnt);
1856#endif 3274#endif
1857 3275
3276#if EV_PREPARE_ENABLE
1858 assert (preparemax >= preparecnt); 3277 assert (preparemax >= preparecnt);
1859 array_verify (EV_A_ (W *)prepares, preparecnt); 3278 array_verify (EV_A_ (W *)prepares, preparecnt);
3279#endif
1860 3280
3281#if EV_CHECK_ENABLE
1861 assert (checkmax >= checkcnt); 3282 assert (checkmax >= checkcnt);
1862 array_verify (EV_A_ (W *)checks, checkcnt); 3283 array_verify (EV_A_ (W *)checks, checkcnt);
3284#endif
1863 3285
1864# if 0 3286# if 0
3287#if EV_CHILD_ENABLE
1865 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 3288 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1866 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending) 3289 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
3290#endif
1867# endif 3291# endif
1868#endif 3292#endif
1869} 3293}
1870#endif 3294#endif
1871 3295
1872#if EV_MULTIPLICITY 3296#if EV_MULTIPLICITY
3297ecb_cold
1873struct ev_loop * 3298struct ev_loop *
1874ev_default_loop_init (unsigned int flags)
1875#else 3299#else
1876int 3300int
3301#endif
1877ev_default_loop (unsigned int flags) 3302ev_default_loop (unsigned int flags) EV_NOEXCEPT
1878#endif
1879{ 3303{
1880 if (!ev_default_loop_ptr) 3304 if (!ev_default_loop_ptr)
1881 { 3305 {
1882#if EV_MULTIPLICITY 3306#if EV_MULTIPLICITY
1883 EV_P = ev_default_loop_ptr = &default_loop_struct; 3307 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1887 3311
1888 loop_init (EV_A_ flags); 3312 loop_init (EV_A_ flags);
1889 3313
1890 if (ev_backend (EV_A)) 3314 if (ev_backend (EV_A))
1891 { 3315 {
1892#ifndef _WIN32 3316#if EV_CHILD_ENABLE
1893 ev_signal_init (&childev, childcb, SIGCHLD); 3317 ev_signal_init (&childev, childcb, SIGCHLD);
1894 ev_set_priority (&childev, EV_MAXPRI); 3318 ev_set_priority (&childev, EV_MAXPRI);
1895 ev_signal_start (EV_A_ &childev); 3319 ev_signal_start (EV_A_ &childev);
1896 ev_unref (EV_A); /* child watcher should not keep loop alive */ 3320 ev_unref (EV_A); /* child watcher should not keep loop alive */
1897#endif 3321#endif
… …
1902 3326
1903 return ev_default_loop_ptr; 3327 return ev_default_loop_ptr;
1904} 3328}
1905 3329
1906void 3330void
1907ev_default_destroy (void) 3331ev_loop_fork (EV_P) EV_NOEXCEPT
1908{ 3332{
1909#if EV_MULTIPLICITY 3333 postfork = 1;
1910 EV_P = ev_default_loop_ptr;
1911#endif
1912
1913 ev_default_loop_ptr = 0;
1914
1915#ifndef _WIN32
1916 ev_ref (EV_A); /* child watcher */
1917 ev_signal_stop (EV_A_ &childev);
1918#endif
1919
1920 loop_destroy (EV_A);
1921}
1922
1923void
1924ev_default_fork (void)
1925{
1926#if EV_MULTIPLICITY
1927 EV_P = ev_default_loop_ptr;
1928#endif
1929
1930 postfork = 1; /* must be in line with ev_loop_fork */
1931} 3334}
1932 3335
1933/*****************************************************************************/ 3336/*****************************************************************************/
1934 3337
1935void 3338void
… …
1937{ 3340{
1938 EV_CB_INVOKE ((W)w, revents); 3341 EV_CB_INVOKE ((W)w, revents);
1939} 3342}
1940 3343
1941unsigned int 3344unsigned int
1942ev_pending_count (EV_P) 3345ev_pending_count (EV_P) EV_NOEXCEPT
1943{ 3346{
1944 int pri; 3347 int pri;
1945 unsigned int count = 0; 3348 unsigned int count = 0;
1946 3349
1947 for (pri = NUMPRI; pri--; ) 3350 for (pri = NUMPRI; pri--; )
1948 count += pendingcnt [pri]; 3351 count += pendingcnt [pri];
1949 3352
1950 return count; 3353 return count;
1951} 3354}
1952 3355
1953void noinline 3356noinline
3357void
1954ev_invoke_pending (EV_P) 3358ev_invoke_pending (EV_P)
1955{ 3359{
1956 int pri; 3360 pendingpri = NUMPRI;
1957 3361
1958 for (pri = NUMPRI; pri--; ) 3362 do
3363 {
3364 --pendingpri;
3365
3366 /* pendingpri possibly gets modified in the inner loop */
1959 while (pendingcnt [pri]) 3367 while (pendingcnt [pendingpri])
1960 { 3368 {
1961 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3369 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
1962 3370
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; 3371 p->w->pending = 0;
1967 EV_CB_INVOKE (p->w, p->events); 3372 EV_CB_INVOKE (p->w, p->events);
1968 EV_FREQUENT_CHECK; 3373 EV_FREQUENT_CHECK;
1969 } 3374 }
3375 }
3376 while (pendingpri);
1970} 3377}
1971 3378
1972#if EV_IDLE_ENABLE 3379#if EV_IDLE_ENABLE
1973/* make idle watchers pending. this handles the "call-idle */ 3380/* make idle watchers pending. this handles the "call-idle */
1974/* only when higher priorities are idle" logic */ 3381/* only when higher priorities are idle" logic */
… …
2026 EV_FREQUENT_CHECK; 3433 EV_FREQUENT_CHECK;
2027 feed_reverse (EV_A_ (W)w); 3434 feed_reverse (EV_A_ (W)w);
2028 } 3435 }
2029 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 3436 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
2030 3437
2031 feed_reverse_done (EV_A_ EV_TIMEOUT); 3438 feed_reverse_done (EV_A_ EV_TIMER);
2032 } 3439 }
2033} 3440}
2034 3441
2035#if EV_PERIODIC_ENABLE 3442#if EV_PERIODIC_ENABLE
3443
3444noinline
3445static void
3446periodic_recalc (EV_P_ ev_periodic *w)
3447{
3448 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3449 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3450
3451 /* the above almost always errs on the low side */
3452 while (at <= ev_rt_now)
3453 {
3454 ev_tstamp nat = at + w->interval;
3455
3456 /* when resolution fails us, we use ev_rt_now */
3457 if (expect_false (nat == at))
3458 {
3459 at = ev_rt_now;
3460 break;
3461 }
3462
3463 at = nat;
3464 }
3465
3466 ev_at (w) = at;
3467}
3468
2036/* make periodics pending */ 3469/* make periodics pending */
2037inline_size void 3470inline_size void
2038periodics_reify (EV_P) 3471periodics_reify (EV_P)
2039{ 3472{
2040 EV_FREQUENT_CHECK; 3473 EV_FREQUENT_CHECK;
2041 3474
2042 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3475 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2043 { 3476 {
2044 int feed_count = 0;
2045
2046 do 3477 do
2047 { 3478 {
2048 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3479 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2049 3480
2050 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3481 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2059 ANHE_at_cache (periodics [HEAP0]); 3490 ANHE_at_cache (periodics [HEAP0]);
2060 downheap (periodics, periodiccnt, HEAP0); 3491 downheap (periodics, periodiccnt, HEAP0);
2061 } 3492 }
2062 else if (w->interval) 3493 else if (w->interval)
2063 { 3494 {
2064 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3495 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]); 3496 ANHE_at_cache (periodics [HEAP0]);
2079 downheap (periodics, periodiccnt, HEAP0); 3497 downheap (periodics, periodiccnt, HEAP0);
2080 } 3498 }
2081 else 3499 else
2082 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3500 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2089 feed_reverse_done (EV_A_ EV_PERIODIC); 3507 feed_reverse_done (EV_A_ EV_PERIODIC);
2090 } 3508 }
2091} 3509}
2092 3510
2093/* simply recalculate all periodics */ 3511/* simply recalculate all periodics */
2094/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 3512/* TODO: maybe ensure that at least one event happens when jumping forward? */
2095static void noinline 3513noinline ecb_cold
3514static void
2096periodics_reschedule (EV_P) 3515periodics_reschedule (EV_P)
2097{ 3516{
2098 int i; 3517 int i;
2099 3518
2100 /* adjust periodics after time jump */ 3519 /* adjust periodics after time jump */
… …
2103 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3522 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2104 3523
2105 if (w->reschedule_cb) 3524 if (w->reschedule_cb)
2106 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3525 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2107 else if (w->interval) 3526 else if (w->interval)
2108 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3527 periodic_recalc (EV_A_ w);
2109 3528
2110 ANHE_at_cache (periodics [i]); 3529 ANHE_at_cache (periodics [i]);
2111 } 3530 }
2112 3531
2113 reheap (periodics, periodiccnt); 3532 reheap (periodics, periodiccnt);
2114} 3533}
2115#endif 3534#endif
2116 3535
2117/* adjust all timers by a given offset */ 3536/* adjust all timers by a given offset */
2118static void noinline 3537noinline ecb_cold
3538static void
2119timers_reschedule (EV_P_ ev_tstamp adjust) 3539timers_reschedule (EV_P_ ev_tstamp adjust)
2120{ 3540{
2121 int i; 3541 int i;
2122 3542
2123 for (i = 0; i < timercnt; ++i) 3543 for (i = 0; i < timercnt; ++i)
… …
2127 ANHE_at_cache (*he); 3547 ANHE_at_cache (*he);
2128 } 3548 }
2129} 3549}
2130 3550
2131/* fetch new monotonic and realtime times from the kernel */ 3551/* fetch new monotonic and realtime times from the kernel */
2132/* also detetc if there was a timejump, and act accordingly */ 3552/* also detect if there was a timejump, and act accordingly */
2133inline_speed void 3553inline_speed void
2134time_update (EV_P_ ev_tstamp max_block) 3554time_update (EV_P_ ev_tstamp max_block)
2135{ 3555{
2136#if EV_USE_MONOTONIC 3556#if EV_USE_MONOTONIC
2137 if (expect_true (have_monotonic)) 3557 if (expect_true (have_monotonic))
… …
2160 * doesn't hurt either as we only do this on time-jumps or 3580 * doesn't hurt either as we only do this on time-jumps or
2161 * in the unlikely event of having been preempted here. 3581 * in the unlikely event of having been preempted here.
2162 */ 3582 */
2163 for (i = 4; --i; ) 3583 for (i = 4; --i; )
2164 { 3584 {
3585 ev_tstamp diff;
2165 rtmn_diff = ev_rt_now - mn_now; 3586 rtmn_diff = ev_rt_now - mn_now;
2166 3587
3588 diff = odiff - rtmn_diff;
3589
2167 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3590 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2168 return; /* all is well */ 3591 return; /* all is well */
2169 3592
2170 ev_rt_now = ev_time (); 3593 ev_rt_now = ev_time ();
2171 mn_now = get_clock (); 3594 mn_now = get_clock ();
2172 now_floor = mn_now; 3595 now_floor = mn_now;
… …
2194 3617
2195 mn_now = ev_rt_now; 3618 mn_now = ev_rt_now;
2196 } 3619 }
2197} 3620}
2198 3621
2199void 3622int
2200ev_loop (EV_P_ int flags) 3623ev_run (EV_P_ int flags)
2201{ 3624{
2202#if EV_MINIMAL < 2 3625#if EV_FEATURE_API
2203 ++loop_depth; 3626 ++loop_depth;
2204#endif 3627#endif
2205 3628
2206 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 3629 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2207 3630
2208 loop_done = EVUNLOOP_CANCEL; 3631 loop_done = EVBREAK_CANCEL;
2209 3632
2210 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 3633 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2211 3634
2212 do 3635 do
2213 { 3636 {
2214#if EV_VERIFY >= 2 3637#if EV_VERIFY >= 2
2215 ev_loop_verify (EV_A); 3638 ev_verify (EV_A);
2216#endif 3639#endif
2217 3640
2218#ifndef _WIN32 3641#ifndef _WIN32
2219 if (expect_false (curpid)) /* penalise the forking check even more */ 3642 if (expect_false (curpid)) /* penalise the forking check even more */
2220 if (expect_false (getpid () != curpid)) 3643 if (expect_false (getpid () != curpid))
… …
2232 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3655 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2233 EV_INVOKE_PENDING; 3656 EV_INVOKE_PENDING;
2234 } 3657 }
2235#endif 3658#endif
2236 3659
3660#if EV_PREPARE_ENABLE
2237 /* queue prepare watchers (and execute them) */ 3661 /* queue prepare watchers (and execute them) */
2238 if (expect_false (preparecnt)) 3662 if (expect_false (preparecnt))
2239 { 3663 {
2240 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3664 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2241 EV_INVOKE_PENDING; 3665 EV_INVOKE_PENDING;
2242 } 3666 }
3667#endif
2243 3668
2244 if (expect_false (loop_done)) 3669 if (expect_false (loop_done))
2245 break; 3670 break;
2246 3671
2247 /* we might have forked, so reify kernel state if necessary */ 3672 /* we might have forked, so reify kernel state if necessary */
… …
2254 /* calculate blocking time */ 3679 /* calculate blocking time */
2255 { 3680 {
2256 ev_tstamp waittime = 0.; 3681 ev_tstamp waittime = 0.;
2257 ev_tstamp sleeptime = 0.; 3682 ev_tstamp sleeptime = 0.;
2258 3683
3684 /* remember old timestamp for io_blocktime calculation */
3685 ev_tstamp prev_mn_now = mn_now;
3686
3687 /* update time to cancel out callback processing overhead */
3688 time_update (EV_A_ 1e100);
3689
3690 /* from now on, we want a pipe-wake-up */
3691 pipe_write_wanted = 1;
3692
3693 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3694
2259 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3695 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2260 { 3696 {
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; 3697 waittime = MAX_BLOCKTIME;
2268 3698
2269 if (timercnt) 3699 if (timercnt)
2270 { 3700 {
2271 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3701 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2272 if (waittime > to) waittime = to; 3702 if (waittime > to) waittime = to;
2273 } 3703 }
2274 3704
2275#if EV_PERIODIC_ENABLE 3705#if EV_PERIODIC_ENABLE
2276 if (periodiccnt) 3706 if (periodiccnt)
2277 { 3707 {
2278 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3708 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2279 if (waittime > to) waittime = to; 3709 if (waittime > to) waittime = to;
2280 } 3710 }
2281#endif 3711#endif
2282 3712
2283 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3713 /* don't let timeouts decrease the waittime below timeout_blocktime */
2284 if (expect_false (waittime < timeout_blocktime)) 3714 if (expect_false (waittime < timeout_blocktime))
2285 waittime = timeout_blocktime; 3715 waittime = timeout_blocktime;
3716
3717 /* at this point, we NEED to wait, so we have to ensure */
3718 /* to pass a minimum nonzero value to the backend */
3719 if (expect_false (waittime < backend_mintime))
3720 waittime = backend_mintime;
2286 3721
2287 /* extra check because io_blocktime is commonly 0 */ 3722 /* extra check because io_blocktime is commonly 0 */
2288 if (expect_false (io_blocktime)) 3723 if (expect_false (io_blocktime))
2289 { 3724 {
2290 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3725 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2291 3726
2292 if (sleeptime > waittime - backend_fudge) 3727 if (sleeptime > waittime - backend_mintime)
2293 sleeptime = waittime - backend_fudge; 3728 sleeptime = waittime - backend_mintime;
2294 3729
2295 if (expect_true (sleeptime > 0.)) 3730 if (expect_true (sleeptime > 0.))
2296 { 3731 {
2297 ev_sleep (sleeptime); 3732 ev_sleep (sleeptime);
2298 waittime -= sleeptime; 3733 waittime -= sleeptime;
2299 } 3734 }
2300 } 3735 }
2301 } 3736 }
2302 3737
2303#if EV_MINIMAL < 2 3738#if EV_FEATURE_API
2304 ++loop_count; 3739 ++loop_count;
2305#endif 3740#endif
2306 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3741 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2307 backend_poll (EV_A_ waittime); 3742 backend_poll (EV_A_ waittime);
2308 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 3743 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3744
3745 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3746
3747 ECB_MEMORY_FENCE_ACQUIRE;
3748 if (pipe_write_skipped)
3749 {
3750 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3751 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3752 }
3753
2309 3754
2310 /* update ev_rt_now, do magic */ 3755 /* update ev_rt_now, do magic */
2311 time_update (EV_A_ waittime + sleeptime); 3756 time_update (EV_A_ waittime + sleeptime);
2312 } 3757 }
2313 3758
… …
2320#if EV_IDLE_ENABLE 3765#if EV_IDLE_ENABLE
2321 /* queue idle watchers unless other events are pending */ 3766 /* queue idle watchers unless other events are pending */
2322 idle_reify (EV_A); 3767 idle_reify (EV_A);
2323#endif 3768#endif
2324 3769
3770#if EV_CHECK_ENABLE
2325 /* queue check watchers, to be executed first */ 3771 /* queue check watchers, to be executed first */
2326 if (expect_false (checkcnt)) 3772 if (expect_false (checkcnt))
2327 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3773 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3774#endif
2328 3775
2329 EV_INVOKE_PENDING; 3776 EV_INVOKE_PENDING;
2330 } 3777 }
2331 while (expect_true ( 3778 while (expect_true (
2332 activecnt 3779 activecnt
2333 && !loop_done 3780 && !loop_done
2334 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3781 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2335 )); 3782 ));
2336 3783
2337 if (loop_done == EVUNLOOP_ONE) 3784 if (loop_done == EVBREAK_ONE)
2338 loop_done = EVUNLOOP_CANCEL; 3785 loop_done = EVBREAK_CANCEL;
2339 3786
2340#if EV_MINIMAL < 2 3787#if EV_FEATURE_API
2341 --loop_depth; 3788 --loop_depth;
2342#endif 3789#endif
2343}
2344 3790
3791 return activecnt;
3792}
3793
2345void 3794void
2346ev_unloop (EV_P_ int how) 3795ev_break (EV_P_ int how) EV_NOEXCEPT
2347{ 3796{
2348 loop_done = how; 3797 loop_done = how;
2349} 3798}
2350 3799
2351void 3800void
2352ev_ref (EV_P) 3801ev_ref (EV_P) EV_NOEXCEPT
2353{ 3802{
2354 ++activecnt; 3803 ++activecnt;
2355} 3804}
2356 3805
2357void 3806void
2358ev_unref (EV_P) 3807ev_unref (EV_P) EV_NOEXCEPT
2359{ 3808{
2360 --activecnt; 3809 --activecnt;
2361} 3810}
2362 3811
2363void 3812void
2364ev_now_update (EV_P) 3813ev_now_update (EV_P) EV_NOEXCEPT
2365{ 3814{
2366 time_update (EV_A_ 1e100); 3815 time_update (EV_A_ 1e100);
2367} 3816}
2368 3817
2369void 3818void
2370ev_suspend (EV_P) 3819ev_suspend (EV_P) EV_NOEXCEPT
2371{ 3820{
2372 ev_now_update (EV_A); 3821 ev_now_update (EV_A);
2373} 3822}
2374 3823
2375void 3824void
2376ev_resume (EV_P) 3825ev_resume (EV_P) EV_NOEXCEPT
2377{ 3826{
2378 ev_tstamp mn_prev = mn_now; 3827 ev_tstamp mn_prev = mn_now;
2379 3828
2380 ev_now_update (EV_A); 3829 ev_now_update (EV_A);
2381 timers_reschedule (EV_A_ mn_now - mn_prev); 3830 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2420 w->pending = 0; 3869 w->pending = 0;
2421 } 3870 }
2422} 3871}
2423 3872
2424int 3873int
2425ev_clear_pending (EV_P_ void *w) 3874ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
2426{ 3875{
2427 W w_ = (W)w; 3876 W w_ = (W)w;
2428 int pending = w_->pending; 3877 int pending = w_->pending;
2429 3878
2430 if (expect_true (pending)) 3879 if (expect_true (pending))
… …
2462 w->active = 0; 3911 w->active = 0;
2463} 3912}
2464 3913
2465/*****************************************************************************/ 3914/*****************************************************************************/
2466 3915
2467void noinline 3916noinline
3917void
2468ev_io_start (EV_P_ ev_io *w) 3918ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
2469{ 3919{
2470 int fd = w->fd; 3920 int fd = w->fd;
2471 3921
2472 if (expect_false (ev_is_active (w))) 3922 if (expect_false (ev_is_active (w)))
2473 return; 3923 return;
2474 3924
2475 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 3925 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)))); 3926 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2477 3927
2478 EV_FREQUENT_CHECK; 3928 EV_FREQUENT_CHECK;
2479 3929
2480 ev_start (EV_A_ (W)w, 1); 3930 ev_start (EV_A_ (W)w, 1);
2481 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3931 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
2482 wlist_add (&anfds[fd].head, (WL)w); 3932 wlist_add (&anfds[fd].head, (WL)w);
3933
3934 /* common bug, apparently */
3935 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
2483 3936
2484 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3937 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2485 w->events &= ~EV__IOFDSET; 3938 w->events &= ~EV__IOFDSET;
2486 3939
2487 EV_FREQUENT_CHECK; 3940 EV_FREQUENT_CHECK;
2488} 3941}
2489 3942
2490void noinline 3943noinline
3944void
2491ev_io_stop (EV_P_ ev_io *w) 3945ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
2492{ 3946{
2493 clear_pending (EV_A_ (W)w); 3947 clear_pending (EV_A_ (W)w);
2494 if (expect_false (!ev_is_active (w))) 3948 if (expect_false (!ev_is_active (w)))
2495 return; 3949 return;
2496 3950
… …
2499 EV_FREQUENT_CHECK; 3953 EV_FREQUENT_CHECK;
2500 3954
2501 wlist_del (&anfds[w->fd].head, (WL)w); 3955 wlist_del (&anfds[w->fd].head, (WL)w);
2502 ev_stop (EV_A_ (W)w); 3956 ev_stop (EV_A_ (W)w);
2503 3957
2504 fd_change (EV_A_ w->fd, 1); 3958 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2505 3959
2506 EV_FREQUENT_CHECK; 3960 EV_FREQUENT_CHECK;
2507} 3961}
2508 3962
2509void noinline 3963noinline
3964void
2510ev_timer_start (EV_P_ ev_timer *w) 3965ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
2511{ 3966{
2512 if (expect_false (ev_is_active (w))) 3967 if (expect_false (ev_is_active (w)))
2513 return; 3968 return;
2514 3969
2515 ev_at (w) += mn_now; 3970 ev_at (w) += mn_now;
… …
2518 3973
2519 EV_FREQUENT_CHECK; 3974 EV_FREQUENT_CHECK;
2520 3975
2521 ++timercnt; 3976 ++timercnt;
2522 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 3977 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
2523 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 3978 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
2524 ANHE_w (timers [ev_active (w)]) = (WT)w; 3979 ANHE_w (timers [ev_active (w)]) = (WT)w;
2525 ANHE_at_cache (timers [ev_active (w)]); 3980 ANHE_at_cache (timers [ev_active (w)]);
2526 upheap (timers, ev_active (w)); 3981 upheap (timers, ev_active (w));
2527 3982
2528 EV_FREQUENT_CHECK; 3983 EV_FREQUENT_CHECK;
2529 3984
2530 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3985 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2531} 3986}
2532 3987
2533void noinline 3988noinline
3989void
2534ev_timer_stop (EV_P_ ev_timer *w) 3990ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
2535{ 3991{
2536 clear_pending (EV_A_ (W)w); 3992 clear_pending (EV_A_ (W)w);
2537 if (expect_false (!ev_is_active (w))) 3993 if (expect_false (!ev_is_active (w)))
2538 return; 3994 return;
2539 3995
… …
2551 timers [active] = timers [timercnt + HEAP0]; 4007 timers [active] = timers [timercnt + HEAP0];
2552 adjustheap (timers, timercnt, active); 4008 adjustheap (timers, timercnt, active);
2553 } 4009 }
2554 } 4010 }
2555 4011
2556 EV_FREQUENT_CHECK;
2557
2558 ev_at (w) -= mn_now; 4012 ev_at (w) -= mn_now;
2559 4013
2560 ev_stop (EV_A_ (W)w); 4014 ev_stop (EV_A_ (W)w);
2561}
2562 4015
4016 EV_FREQUENT_CHECK;
4017}
4018
2563void noinline 4019noinline
4020void
2564ev_timer_again (EV_P_ ev_timer *w) 4021ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
2565{ 4022{
2566 EV_FREQUENT_CHECK; 4023 EV_FREQUENT_CHECK;
4024
4025 clear_pending (EV_A_ (W)w);
2567 4026
2568 if (ev_is_active (w)) 4027 if (ev_is_active (w))
2569 { 4028 {
2570 if (w->repeat) 4029 if (w->repeat)
2571 { 4030 {
… …
2584 4043
2585 EV_FREQUENT_CHECK; 4044 EV_FREQUENT_CHECK;
2586} 4045}
2587 4046
2588ev_tstamp 4047ev_tstamp
2589ev_timer_remaining (EV_P_ ev_timer *w) 4048ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
2590{ 4049{
2591 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4050 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2592} 4051}
2593 4052
2594#if EV_PERIODIC_ENABLE 4053#if EV_PERIODIC_ENABLE
2595void noinline 4054noinline
4055void
2596ev_periodic_start (EV_P_ ev_periodic *w) 4056ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
2597{ 4057{
2598 if (expect_false (ev_is_active (w))) 4058 if (expect_false (ev_is_active (w)))
2599 return; 4059 return;
2600 4060
2601 if (w->reschedule_cb) 4061 if (w->reschedule_cb)
2602 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4062 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2603 else if (w->interval) 4063 else if (w->interval)
2604 { 4064 {
2605 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 4065 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 */ 4066 periodic_recalc (EV_A_ w);
2607 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2608 } 4067 }
2609 else 4068 else
2610 ev_at (w) = w->offset; 4069 ev_at (w) = w->offset;
2611 4070
2612 EV_FREQUENT_CHECK; 4071 EV_FREQUENT_CHECK;
2613 4072
2614 ++periodiccnt; 4073 ++periodiccnt;
2615 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4074 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2616 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4075 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
2617 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4076 ANHE_w (periodics [ev_active (w)]) = (WT)w;
2618 ANHE_at_cache (periodics [ev_active (w)]); 4077 ANHE_at_cache (periodics [ev_active (w)]);
2619 upheap (periodics, ev_active (w)); 4078 upheap (periodics, ev_active (w));
2620 4079
2621 EV_FREQUENT_CHECK; 4080 EV_FREQUENT_CHECK;
2622 4081
2623 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4082 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2624} 4083}
2625 4084
2626void noinline 4085noinline
4086void
2627ev_periodic_stop (EV_P_ ev_periodic *w) 4087ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
2628{ 4088{
2629 clear_pending (EV_A_ (W)w); 4089 clear_pending (EV_A_ (W)w);
2630 if (expect_false (!ev_is_active (w))) 4090 if (expect_false (!ev_is_active (w)))
2631 return; 4091 return;
2632 4092
… …
2644 periodics [active] = periodics [periodiccnt + HEAP0]; 4104 periodics [active] = periodics [periodiccnt + HEAP0];
2645 adjustheap (periodics, periodiccnt, active); 4105 adjustheap (periodics, periodiccnt, active);
2646 } 4106 }
2647 } 4107 }
2648 4108
2649 EV_FREQUENT_CHECK;
2650
2651 ev_stop (EV_A_ (W)w); 4109 ev_stop (EV_A_ (W)w);
2652}
2653 4110
4111 EV_FREQUENT_CHECK;
4112}
4113
2654void noinline 4114noinline
4115void
2655ev_periodic_again (EV_P_ ev_periodic *w) 4116ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
2656{ 4117{
2657 /* TODO: use adjustheap and recalculation */ 4118 /* TODO: use adjustheap and recalculation */
2658 ev_periodic_stop (EV_A_ w); 4119 ev_periodic_stop (EV_A_ w);
2659 ev_periodic_start (EV_A_ w); 4120 ev_periodic_start (EV_A_ w);
2660} 4121}
… …
2662 4123
2663#ifndef SA_RESTART 4124#ifndef SA_RESTART
2664# define SA_RESTART 0 4125# define SA_RESTART 0
2665#endif 4126#endif
2666 4127
4128#if EV_SIGNAL_ENABLE
4129
2667void noinline 4130noinline
4131void
2668ev_signal_start (EV_P_ ev_signal *w) 4132ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
2669{ 4133{
2670 if (expect_false (ev_is_active (w))) 4134 if (expect_false (ev_is_active (w)))
2671 return; 4135 return;
2672 4136
2673 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4137 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2674 4138
2675#if EV_MULTIPLICITY 4139#if EV_MULTIPLICITY
2676 assert (("libev: tried to attach to a signal from two different loops", 4140 assert (("libev: a signal must not be attached to two different loops",
2677 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4141 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2678 4142
2679 signals [w->signum - 1].loop = EV_A; 4143 signals [w->signum - 1].loop = EV_A;
4144 ECB_MEMORY_FENCE_RELEASE;
2680#endif 4145#endif
2681 4146
2682 EV_FREQUENT_CHECK; 4147 EV_FREQUENT_CHECK;
2683 4148
2684#if EV_USE_SIGNALFD 4149#if EV_USE_SIGNALFD
… …
2717 if (!((WL)w)->next) 4182 if (!((WL)w)->next)
2718# if EV_USE_SIGNALFD 4183# if EV_USE_SIGNALFD
2719 if (sigfd < 0) /*TODO*/ 4184 if (sigfd < 0) /*TODO*/
2720# endif 4185# endif
2721 { 4186 {
2722# if _WIN32 4187# ifdef _WIN32
4188 evpipe_init (EV_A);
4189
2723 signal (w->signum, ev_sighandler); 4190 signal (w->signum, ev_sighandler);
2724# else 4191# else
2725 struct sigaction sa; 4192 struct sigaction sa;
2726 4193
2727 evpipe_init (EV_A); 4194 evpipe_init (EV_A);
… …
2729 sa.sa_handler = ev_sighandler; 4196 sa.sa_handler = ev_sighandler;
2730 sigfillset (&sa.sa_mask); 4197 sigfillset (&sa.sa_mask);
2731 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 4198 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2732 sigaction (w->signum, &sa, 0); 4199 sigaction (w->signum, &sa, 0);
2733 4200
4201 if (origflags & EVFLAG_NOSIGMASK)
4202 {
2734 sigemptyset (&sa.sa_mask); 4203 sigemptyset (&sa.sa_mask);
2735 sigaddset (&sa.sa_mask, w->signum); 4204 sigaddset (&sa.sa_mask, w->signum);
2736 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 4205 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
4206 }
2737#endif 4207#endif
2738 } 4208 }
2739 4209
2740 EV_FREQUENT_CHECK; 4210 EV_FREQUENT_CHECK;
2741} 4211}
2742 4212
2743void noinline 4213noinline
4214void
2744ev_signal_stop (EV_P_ ev_signal *w) 4215ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
2745{ 4216{
2746 clear_pending (EV_A_ (W)w); 4217 clear_pending (EV_A_ (W)w);
2747 if (expect_false (!ev_is_active (w))) 4218 if (expect_false (!ev_is_active (w)))
2748 return; 4219 return;
2749 4220
… …
2758 signals [w->signum - 1].loop = 0; /* unattach from signal */ 4229 signals [w->signum - 1].loop = 0; /* unattach from signal */
2759#endif 4230#endif
2760#if EV_USE_SIGNALFD 4231#if EV_USE_SIGNALFD
2761 if (sigfd >= 0) 4232 if (sigfd >= 0)
2762 { 4233 {
2763 sigprocmask (SIG_UNBLOCK, &sigfd_set, 0);//D 4234 sigset_t ss;
4235
4236 sigemptyset (&ss);
4237 sigaddset (&ss, w->signum);
2764 sigdelset (&sigfd_set, w->signum); 4238 sigdelset (&sigfd_set, w->signum);
4239
2765 signalfd (sigfd, &sigfd_set, 0); 4240 signalfd (sigfd, &sigfd_set, 0);
2766 sigprocmask (SIG_BLOCK, &sigfd_set, 0);//D 4241 sigprocmask (SIG_UNBLOCK, &ss, 0);
2767 /*TODO: maybe unblock signal? */
2768 } 4242 }
2769 else 4243 else
2770#endif 4244#endif
2771 signal (w->signum, SIG_DFL); 4245 signal (w->signum, SIG_DFL);
2772 } 4246 }
2773 4247
2774 EV_FREQUENT_CHECK; 4248 EV_FREQUENT_CHECK;
2775} 4249}
2776 4250
4251#endif
4252
4253#if EV_CHILD_ENABLE
4254
2777void 4255void
2778ev_child_start (EV_P_ ev_child *w) 4256ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
2779{ 4257{
2780#if EV_MULTIPLICITY 4258#if EV_MULTIPLICITY
2781 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4259 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2782#endif 4260#endif
2783 if (expect_false (ev_is_active (w))) 4261 if (expect_false (ev_is_active (w)))
2784 return; 4262 return;
2785 4263
2786 EV_FREQUENT_CHECK; 4264 EV_FREQUENT_CHECK;
2787 4265
2788 ev_start (EV_A_ (W)w, 1); 4266 ev_start (EV_A_ (W)w, 1);
2789 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4267 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2790 4268
2791 EV_FREQUENT_CHECK; 4269 EV_FREQUENT_CHECK;
2792} 4270}
2793 4271
2794void 4272void
2795ev_child_stop (EV_P_ ev_child *w) 4273ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
2796{ 4274{
2797 clear_pending (EV_A_ (W)w); 4275 clear_pending (EV_A_ (W)w);
2798 if (expect_false (!ev_is_active (w))) 4276 if (expect_false (!ev_is_active (w)))
2799 return; 4277 return;
2800 4278
2801 EV_FREQUENT_CHECK; 4279 EV_FREQUENT_CHECK;
2802 4280
2803 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4281 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2804 ev_stop (EV_A_ (W)w); 4282 ev_stop (EV_A_ (W)w);
2805 4283
2806 EV_FREQUENT_CHECK; 4284 EV_FREQUENT_CHECK;
2807} 4285}
4286
4287#endif
2808 4288
2809#if EV_STAT_ENABLE 4289#if EV_STAT_ENABLE
2810 4290
2811# ifdef _WIN32 4291# ifdef _WIN32
2812# undef lstat 4292# undef lstat
… …
2815 4295
2816#define DEF_STAT_INTERVAL 5.0074891 4296#define DEF_STAT_INTERVAL 5.0074891
2817#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4297#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2818#define MIN_STAT_INTERVAL 0.1074891 4298#define MIN_STAT_INTERVAL 0.1074891
2819 4299
2820static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4300noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2821 4301
2822#if EV_USE_INOTIFY 4302#if EV_USE_INOTIFY
2823# define EV_INOTIFY_BUFSIZE 8192
2824 4303
2825static void noinline 4304/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
4305# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
4306
4307noinline
4308static void
2826infy_add (EV_P_ ev_stat *w) 4309infy_add (EV_P_ ev_stat *w)
2827{ 4310{
2828 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); 4311 w->wd = inotify_add_watch (fs_fd, w->path,
4312 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4313 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4314 | IN_DONT_FOLLOW | IN_MASK_ADD);
2829 4315
2830 if (w->wd < 0) 4316 if (w->wd >= 0)
4317 {
4318 struct statfs sfs;
4319
4320 /* now local changes will be tracked by inotify, but remote changes won't */
4321 /* unless the filesystem is known to be local, we therefore still poll */
4322 /* also do poll on <2.6.25, but with normal frequency */
4323
4324 if (!fs_2625)
4325 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
4326 else if (!statfs (w->path, &sfs)
4327 && (sfs.f_type == 0x1373 /* devfs */
4328 || sfs.f_type == 0x4006 /* fat */
4329 || sfs.f_type == 0x4d44 /* msdos */
4330 || sfs.f_type == 0xEF53 /* ext2/3 */
4331 || sfs.f_type == 0x72b6 /* jffs2 */
4332 || sfs.f_type == 0x858458f6 /* ramfs */
4333 || sfs.f_type == 0x5346544e /* ntfs */
4334 || sfs.f_type == 0x3153464a /* jfs */
4335 || sfs.f_type == 0x9123683e /* btrfs */
4336 || sfs.f_type == 0x52654973 /* reiser3 */
4337 || sfs.f_type == 0x01021994 /* tmpfs */
4338 || sfs.f_type == 0x58465342 /* xfs */))
4339 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
4340 else
4341 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2831 { 4342 }
4343 else
4344 {
4345 /* can't use inotify, continue to stat */
2832 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4346 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2833 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2834 4347
2835 /* monitor some parent directory for speedup hints */ 4348 /* if path is not there, monitor some parent directory for speedup hints */
2836 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 4349 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2837 /* but an efficiency issue only */ 4350 /* but an efficiency issue only */
2838 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 4351 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2839 { 4352 {
2840 char path [4096]; 4353 char path [4096];
… …
2850 if (!pend || pend == path) 4363 if (!pend || pend == path)
2851 break; 4364 break;
2852 4365
2853 *pend = 0; 4366 *pend = 0;
2854 w->wd = inotify_add_watch (fs_fd, path, mask); 4367 w->wd = inotify_add_watch (fs_fd, path, mask);
2855 } 4368 }
2856 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 4369 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2857 } 4370 }
2858 } 4371 }
2859 4372
2860 if (w->wd >= 0) 4373 if (w->wd >= 0)
2861 {
2862 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4374 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2863 4375
2864 /* now local changes will be tracked by inotify, but remote changes won't */ 4376 /* now re-arm timer, if required */
2865 /* unless the filesystem it known to be local, we therefore still poll */ 4377 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2866 /* also do poll on <2.6.25, but with normal frequency */
2867 struct statfs sfs;
2868
2869 if (fs_2625 && !statfs (w->path, &sfs))
2870 if (sfs.f_type == 0x1373 /* devfs */
2871 || sfs.f_type == 0xEF53 /* ext2/3 */
2872 || sfs.f_type == 0x3153464a /* jfs */
2873 || sfs.f_type == 0x52654973 /* reiser3 */
2874 || sfs.f_type == 0x01021994 /* tempfs */
2875 || sfs.f_type == 0x58465342 /* xfs */)
2876 return;
2877
2878 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2879 ev_timer_again (EV_A_ &w->timer); 4378 ev_timer_again (EV_A_ &w->timer);
2880 } 4379 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2881} 4380}
2882 4381
2883static void noinline 4382noinline
4383static void
2884infy_del (EV_P_ ev_stat *w) 4384infy_del (EV_P_ ev_stat *w)
2885{ 4385{
2886 int slot; 4386 int slot;
2887 int wd = w->wd; 4387 int wd = w->wd;
2888 4388
2889 if (wd < 0) 4389 if (wd < 0)
2890 return; 4390 return;
2891 4391
2892 w->wd = -2; 4392 w->wd = -2;
2893 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 4393 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2894 wlist_del (&fs_hash [slot].head, (WL)w); 4394 wlist_del (&fs_hash [slot].head, (WL)w);
2895 4395
2896 /* remove this watcher, if others are watching it, they will rearm */ 4396 /* remove this watcher, if others are watching it, they will rearm */
2897 inotify_rm_watch (fs_fd, wd); 4397 inotify_rm_watch (fs_fd, wd);
2898} 4398}
2899 4399
2900static void noinline 4400noinline
4401static void
2901infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4402infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2902{ 4403{
2903 if (slot < 0) 4404 if (slot < 0)
2904 /* overflow, need to check for all hash slots */ 4405 /* overflow, need to check for all hash slots */
2905 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4406 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2906 infy_wd (EV_A_ slot, wd, ev); 4407 infy_wd (EV_A_ slot, wd, ev);
2907 else 4408 else
2908 { 4409 {
2909 WL w_; 4410 WL w_;
2910 4411
2911 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 4412 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2912 { 4413 {
2913 ev_stat *w = (ev_stat *)w_; 4414 ev_stat *w = (ev_stat *)w_;
2914 w_ = w_->next; /* lets us remove this watcher and all before it */ 4415 w_ = w_->next; /* lets us remove this watcher and all before it */
2915 4416
2916 if (w->wd == wd || wd == -1) 4417 if (w->wd == wd || wd == -1)
2917 { 4418 {
2918 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 4419 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2919 { 4420 {
2920 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4421 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2921 w->wd = -1; 4422 w->wd = -1;
2922 infy_add (EV_A_ w); /* re-add, no matter what */ 4423 infy_add (EV_A_ w); /* re-add, no matter what */
2923 } 4424 }
2924 4425
2925 stat_timer_cb (EV_A_ &w->timer, 0); 4426 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2930 4431
2931static void 4432static void
2932infy_cb (EV_P_ ev_io *w, int revents) 4433infy_cb (EV_P_ ev_io *w, int revents)
2933{ 4434{
2934 char buf [EV_INOTIFY_BUFSIZE]; 4435 char buf [EV_INOTIFY_BUFSIZE];
2935 struct inotify_event *ev = (struct inotify_event *)buf;
2936 int ofs; 4436 int ofs;
2937 int len = read (fs_fd, buf, sizeof (buf)); 4437 int len = read (fs_fd, buf, sizeof (buf));
2938 4438
2939 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 4439 for (ofs = 0; ofs < len; )
4440 {
4441 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2940 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4442 infy_wd (EV_A_ ev->wd, ev->wd, ev);
4443 ofs += sizeof (struct inotify_event) + ev->len;
4444 }
2941} 4445}
2942 4446
2943inline_size void 4447inline_size ecb_cold
4448void
2944check_2625 (EV_P) 4449ev_check_2625 (EV_P)
2945{ 4450{
2946 /* kernels < 2.6.25 are borked 4451 /* kernels < 2.6.25 are borked
2947 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4452 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2948 */ 4453 */
2949 struct utsname buf; 4454 if (ev_linux_version () < 0x020619)
2950 int major, minor, micro;
2951
2952 if (uname (&buf))
2953 return; 4455 return;
2954 4456
2955 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2956 return;
2957
2958 if (major < 2
2959 || (major == 2 && minor < 6)
2960 || (major == 2 && minor == 6 && micro < 25))
2961 return;
2962
2963 fs_2625 = 1; 4457 fs_2625 = 1;
4458}
4459
4460inline_size int
4461infy_newfd (void)
4462{
4463#if defined IN_CLOEXEC && defined IN_NONBLOCK
4464 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
4465 if (fd >= 0)
4466 return fd;
4467#endif
4468 return inotify_init ();
2964} 4469}
2965 4470
2966inline_size void 4471inline_size void
2967infy_init (EV_P) 4472infy_init (EV_P)
2968{ 4473{
2969 if (fs_fd != -2) 4474 if (fs_fd != -2)
2970 return; 4475 return;
2971 4476
2972 fs_fd = -1; 4477 fs_fd = -1;
2973 4478
2974 check_2625 (EV_A); 4479 ev_check_2625 (EV_A);
2975 4480
2976 fs_fd = inotify_init (); 4481 fs_fd = infy_newfd ();
2977 4482
2978 if (fs_fd >= 0) 4483 if (fs_fd >= 0)
2979 { 4484 {
4485 fd_intern (fs_fd);
2980 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 4486 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2981 ev_set_priority (&fs_w, EV_MAXPRI); 4487 ev_set_priority (&fs_w, EV_MAXPRI);
2982 ev_io_start (EV_A_ &fs_w); 4488 ev_io_start (EV_A_ &fs_w);
4489 ev_unref (EV_A);
2983 } 4490 }
2984} 4491}
2985 4492
2986inline_size void 4493inline_size void
2987infy_fork (EV_P) 4494infy_fork (EV_P)
… …
2989 int slot; 4496 int slot;
2990 4497
2991 if (fs_fd < 0) 4498 if (fs_fd < 0)
2992 return; 4499 return;
2993 4500
4501 ev_ref (EV_A);
4502 ev_io_stop (EV_A_ &fs_w);
2994 close (fs_fd); 4503 close (fs_fd);
2995 fs_fd = inotify_init (); 4504 fs_fd = infy_newfd ();
2996 4505
4506 if (fs_fd >= 0)
4507 {
4508 fd_intern (fs_fd);
4509 ev_io_set (&fs_w, fs_fd, EV_READ);
4510 ev_io_start (EV_A_ &fs_w);
4511 ev_unref (EV_A);
4512 }
4513
2997 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4514 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2998 { 4515 {
2999 WL w_ = fs_hash [slot].head; 4516 WL w_ = fs_hash [slot].head;
3000 fs_hash [slot].head = 0; 4517 fs_hash [slot].head = 0;
3001 4518
3002 while (w_) 4519 while (w_)
… …
3007 w->wd = -1; 4524 w->wd = -1;
3008 4525
3009 if (fs_fd >= 0) 4526 if (fs_fd >= 0)
3010 infy_add (EV_A_ w); /* re-add, no matter what */ 4527 infy_add (EV_A_ w); /* re-add, no matter what */
3011 else 4528 else
4529 {
4530 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
4531 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3012 ev_timer_again (EV_A_ &w->timer); 4532 ev_timer_again (EV_A_ &w->timer);
4533 if (ev_is_active (&w->timer)) ev_unref (EV_A);
4534 }
3013 } 4535 }
3014 } 4536 }
3015} 4537}
3016 4538
3017#endif 4539#endif
… …
3021#else 4543#else
3022# define EV_LSTAT(p,b) lstat (p, b) 4544# define EV_LSTAT(p,b) lstat (p, b)
3023#endif 4545#endif
3024 4546
3025void 4547void
3026ev_stat_stat (EV_P_ ev_stat *w) 4548ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
3027{ 4549{
3028 if (lstat (w->path, &w->attr) < 0) 4550 if (lstat (w->path, &w->attr) < 0)
3029 w->attr.st_nlink = 0; 4551 w->attr.st_nlink = 0;
3030 else if (!w->attr.st_nlink) 4552 else if (!w->attr.st_nlink)
3031 w->attr.st_nlink = 1; 4553 w->attr.st_nlink = 1;
3032} 4554}
3033 4555
3034static void noinline 4556noinline
4557static void
3035stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4558stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3036{ 4559{
3037 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4560 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3038 4561
3039 /* we copy this here each the time so that */ 4562 ev_statdata prev = w->attr;
3040 /* prev has the old value when the callback gets invoked */
3041 w->prev = w->attr;
3042 ev_stat_stat (EV_A_ w); 4563 ev_stat_stat (EV_A_ w);
3043 4564
3044 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 4565 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
3045 if ( 4566 if (
3046 w->prev.st_dev != w->attr.st_dev 4567 prev.st_dev != w->attr.st_dev
3047 || w->prev.st_ino != w->attr.st_ino 4568 || prev.st_ino != w->attr.st_ino
3048 || w->prev.st_mode != w->attr.st_mode 4569 || prev.st_mode != w->attr.st_mode
3049 || w->prev.st_nlink != w->attr.st_nlink 4570 || prev.st_nlink != w->attr.st_nlink
3050 || w->prev.st_uid != w->attr.st_uid 4571 || prev.st_uid != w->attr.st_uid
3051 || w->prev.st_gid != w->attr.st_gid 4572 || prev.st_gid != w->attr.st_gid
3052 || w->prev.st_rdev != w->attr.st_rdev 4573 || prev.st_rdev != w->attr.st_rdev
3053 || w->prev.st_size != w->attr.st_size 4574 || prev.st_size != w->attr.st_size
3054 || w->prev.st_atime != w->attr.st_atime 4575 || prev.st_atime != w->attr.st_atime
3055 || w->prev.st_mtime != w->attr.st_mtime 4576 || prev.st_mtime != w->attr.st_mtime
3056 || w->prev.st_ctime != w->attr.st_ctime 4577 || prev.st_ctime != w->attr.st_ctime
3057 ) { 4578 ) {
4579 /* we only update w->prev on actual differences */
4580 /* in case we test more often than invoke the callback, */
4581 /* to ensure that prev is always different to attr */
4582 w->prev = prev;
4583
3058 #if EV_USE_INOTIFY 4584 #if EV_USE_INOTIFY
3059 if (fs_fd >= 0) 4585 if (fs_fd >= 0)
3060 { 4586 {
3061 infy_del (EV_A_ w); 4587 infy_del (EV_A_ w);
3062 infy_add (EV_A_ w); 4588 infy_add (EV_A_ w);
… …
3067 ev_feed_event (EV_A_ w, EV_STAT); 4593 ev_feed_event (EV_A_ w, EV_STAT);
3068 } 4594 }
3069} 4595}
3070 4596
3071void 4597void
3072ev_stat_start (EV_P_ ev_stat *w) 4598ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
3073{ 4599{
3074 if (expect_false (ev_is_active (w))) 4600 if (expect_false (ev_is_active (w)))
3075 return; 4601 return;
3076 4602
3077 ev_stat_stat (EV_A_ w); 4603 ev_stat_stat (EV_A_ w);
… …
3087 4613
3088 if (fs_fd >= 0) 4614 if (fs_fd >= 0)
3089 infy_add (EV_A_ w); 4615 infy_add (EV_A_ w);
3090 else 4616 else
3091#endif 4617#endif
4618 {
3092 ev_timer_again (EV_A_ &w->timer); 4619 ev_timer_again (EV_A_ &w->timer);
4620 ev_unref (EV_A);
4621 }
3093 4622
3094 ev_start (EV_A_ (W)w, 1); 4623 ev_start (EV_A_ (W)w, 1);
3095 4624
3096 EV_FREQUENT_CHECK; 4625 EV_FREQUENT_CHECK;
3097} 4626}
3098 4627
3099void 4628void
3100ev_stat_stop (EV_P_ ev_stat *w) 4629ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
3101{ 4630{
3102 clear_pending (EV_A_ (W)w); 4631 clear_pending (EV_A_ (W)w);
3103 if (expect_false (!ev_is_active (w))) 4632 if (expect_false (!ev_is_active (w)))
3104 return; 4633 return;
3105 4634
3106 EV_FREQUENT_CHECK; 4635 EV_FREQUENT_CHECK;
3107 4636
3108#if EV_USE_INOTIFY 4637#if EV_USE_INOTIFY
3109 infy_del (EV_A_ w); 4638 infy_del (EV_A_ w);
3110#endif 4639#endif
4640
4641 if (ev_is_active (&w->timer))
4642 {
4643 ev_ref (EV_A);
3111 ev_timer_stop (EV_A_ &w->timer); 4644 ev_timer_stop (EV_A_ &w->timer);
4645 }
3112 4646
3113 ev_stop (EV_A_ (W)w); 4647 ev_stop (EV_A_ (W)w);
3114 4648
3115 EV_FREQUENT_CHECK; 4649 EV_FREQUENT_CHECK;
3116} 4650}
3117#endif 4651#endif
3118 4652
3119#if EV_IDLE_ENABLE 4653#if EV_IDLE_ENABLE
3120void 4654void
3121ev_idle_start (EV_P_ ev_idle *w) 4655ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
3122{ 4656{
3123 if (expect_false (ev_is_active (w))) 4657 if (expect_false (ev_is_active (w)))
3124 return; 4658 return;
3125 4659
3126 pri_adjust (EV_A_ (W)w); 4660 pri_adjust (EV_A_ (W)w);
… …
3131 int active = ++idlecnt [ABSPRI (w)]; 4665 int active = ++idlecnt [ABSPRI (w)];
3132 4666
3133 ++idleall; 4667 ++idleall;
3134 ev_start (EV_A_ (W)w, active); 4668 ev_start (EV_A_ (W)w, active);
3135 4669
3136 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 4670 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
3137 idles [ABSPRI (w)][active - 1] = w; 4671 idles [ABSPRI (w)][active - 1] = w;
3138 } 4672 }
3139 4673
3140 EV_FREQUENT_CHECK; 4674 EV_FREQUENT_CHECK;
3141} 4675}
3142 4676
3143void 4677void
3144ev_idle_stop (EV_P_ ev_idle *w) 4678ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
3145{ 4679{
3146 clear_pending (EV_A_ (W)w); 4680 clear_pending (EV_A_ (W)w);
3147 if (expect_false (!ev_is_active (w))) 4681 if (expect_false (!ev_is_active (w)))
3148 return; 4682 return;
3149 4683
… …
3161 4695
3162 EV_FREQUENT_CHECK; 4696 EV_FREQUENT_CHECK;
3163} 4697}
3164#endif 4698#endif
3165 4699
4700#if EV_PREPARE_ENABLE
3166void 4701void
3167ev_prepare_start (EV_P_ ev_prepare *w) 4702ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
3168{ 4703{
3169 if (expect_false (ev_is_active (w))) 4704 if (expect_false (ev_is_active (w)))
3170 return; 4705 return;
3171 4706
3172 EV_FREQUENT_CHECK; 4707 EV_FREQUENT_CHECK;
3173 4708
3174 ev_start (EV_A_ (W)w, ++preparecnt); 4709 ev_start (EV_A_ (W)w, ++preparecnt);
3175 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4710 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
3176 prepares [preparecnt - 1] = w; 4711 prepares [preparecnt - 1] = w;
3177 4712
3178 EV_FREQUENT_CHECK; 4713 EV_FREQUENT_CHECK;
3179} 4714}
3180 4715
3181void 4716void
3182ev_prepare_stop (EV_P_ ev_prepare *w) 4717ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
3183{ 4718{
3184 clear_pending (EV_A_ (W)w); 4719 clear_pending (EV_A_ (W)w);
3185 if (expect_false (!ev_is_active (w))) 4720 if (expect_false (!ev_is_active (w)))
3186 return; 4721 return;
3187 4722
… …
3196 4731
3197 ev_stop (EV_A_ (W)w); 4732 ev_stop (EV_A_ (W)w);
3198 4733
3199 EV_FREQUENT_CHECK; 4734 EV_FREQUENT_CHECK;
3200} 4735}
4736#endif
3201 4737
4738#if EV_CHECK_ENABLE
3202void 4739void
3203ev_check_start (EV_P_ ev_check *w) 4740ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
3204{ 4741{
3205 if (expect_false (ev_is_active (w))) 4742 if (expect_false (ev_is_active (w)))
3206 return; 4743 return;
3207 4744
3208 EV_FREQUENT_CHECK; 4745 EV_FREQUENT_CHECK;
3209 4746
3210 ev_start (EV_A_ (W)w, ++checkcnt); 4747 ev_start (EV_A_ (W)w, ++checkcnt);
3211 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 4748 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
3212 checks [checkcnt - 1] = w; 4749 checks [checkcnt - 1] = w;
3213 4750
3214 EV_FREQUENT_CHECK; 4751 EV_FREQUENT_CHECK;
3215} 4752}
3216 4753
3217void 4754void
3218ev_check_stop (EV_P_ ev_check *w) 4755ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
3219{ 4756{
3220 clear_pending (EV_A_ (W)w); 4757 clear_pending (EV_A_ (W)w);
3221 if (expect_false (!ev_is_active (w))) 4758 if (expect_false (!ev_is_active (w)))
3222 return; 4759 return;
3223 4760
… …
3232 4769
3233 ev_stop (EV_A_ (W)w); 4770 ev_stop (EV_A_ (W)w);
3234 4771
3235 EV_FREQUENT_CHECK; 4772 EV_FREQUENT_CHECK;
3236} 4773}
4774#endif
3237 4775
3238#if EV_EMBED_ENABLE 4776#if EV_EMBED_ENABLE
3239void noinline 4777noinline
4778void
3240ev_embed_sweep (EV_P_ ev_embed *w) 4779ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
3241{ 4780{
3242 ev_loop (w->other, EVLOOP_NONBLOCK); 4781 ev_run (w->other, EVRUN_NOWAIT);
3243} 4782}
3244 4783
3245static void 4784static void
3246embed_io_cb (EV_P_ ev_io *io, int revents) 4785embed_io_cb (EV_P_ ev_io *io, int revents)
3247{ 4786{
3248 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4787 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3249 4788
3250 if (ev_cb (w)) 4789 if (ev_cb (w))
3251 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4790 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3252 else 4791 else
3253 ev_loop (w->other, EVLOOP_NONBLOCK); 4792 ev_run (w->other, EVRUN_NOWAIT);
3254} 4793}
3255 4794
3256static void 4795static void
3257embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4796embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3258{ 4797{
… …
3262 EV_P = w->other; 4801 EV_P = w->other;
3263 4802
3264 while (fdchangecnt) 4803 while (fdchangecnt)
3265 { 4804 {
3266 fd_reify (EV_A); 4805 fd_reify (EV_A);
3267 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4806 ev_run (EV_A_ EVRUN_NOWAIT);
3268 } 4807 }
3269 } 4808 }
3270} 4809}
3271 4810
3272static void 4811static void
… …
3278 4817
3279 { 4818 {
3280 EV_P = w->other; 4819 EV_P = w->other;
3281 4820
3282 ev_loop_fork (EV_A); 4821 ev_loop_fork (EV_A);
3283 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4822 ev_run (EV_A_ EVRUN_NOWAIT);
3284 } 4823 }
3285 4824
3286 ev_embed_start (EV_A_ w); 4825 ev_embed_start (EV_A_ w);
3287} 4826}
3288 4827
… …
3293 ev_idle_stop (EV_A_ idle); 4832 ev_idle_stop (EV_A_ idle);
3294} 4833}
3295#endif 4834#endif
3296 4835
3297void 4836void
3298ev_embed_start (EV_P_ ev_embed *w) 4837ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
3299{ 4838{
3300 if (expect_false (ev_is_active (w))) 4839 if (expect_false (ev_is_active (w)))
3301 return; 4840 return;
3302 4841
3303 { 4842 {
… …
3324 4863
3325 EV_FREQUENT_CHECK; 4864 EV_FREQUENT_CHECK;
3326} 4865}
3327 4866
3328void 4867void
3329ev_embed_stop (EV_P_ ev_embed *w) 4868ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
3330{ 4869{
3331 clear_pending (EV_A_ (W)w); 4870 clear_pending (EV_A_ (W)w);
3332 if (expect_false (!ev_is_active (w))) 4871 if (expect_false (!ev_is_active (w)))
3333 return; 4872 return;
3334 4873
… …
3336 4875
3337 ev_io_stop (EV_A_ &w->io); 4876 ev_io_stop (EV_A_ &w->io);
3338 ev_prepare_stop (EV_A_ &w->prepare); 4877 ev_prepare_stop (EV_A_ &w->prepare);
3339 ev_fork_stop (EV_A_ &w->fork); 4878 ev_fork_stop (EV_A_ &w->fork);
3340 4879
4880 ev_stop (EV_A_ (W)w);
4881
3341 EV_FREQUENT_CHECK; 4882 EV_FREQUENT_CHECK;
3342} 4883}
3343#endif 4884#endif
3344 4885
3345#if EV_FORK_ENABLE 4886#if EV_FORK_ENABLE
3346void 4887void
3347ev_fork_start (EV_P_ ev_fork *w) 4888ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
3348{ 4889{
3349 if (expect_false (ev_is_active (w))) 4890 if (expect_false (ev_is_active (w)))
3350 return; 4891 return;
3351 4892
3352 EV_FREQUENT_CHECK; 4893 EV_FREQUENT_CHECK;
3353 4894
3354 ev_start (EV_A_ (W)w, ++forkcnt); 4895 ev_start (EV_A_ (W)w, ++forkcnt);
3355 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 4896 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
3356 forks [forkcnt - 1] = w; 4897 forks [forkcnt - 1] = w;
3357 4898
3358 EV_FREQUENT_CHECK; 4899 EV_FREQUENT_CHECK;
3359} 4900}
3360 4901
3361void 4902void
3362ev_fork_stop (EV_P_ ev_fork *w) 4903ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
3363{ 4904{
3364 clear_pending (EV_A_ (W)w); 4905 clear_pending (EV_A_ (W)w);
3365 if (expect_false (!ev_is_active (w))) 4906 if (expect_false (!ev_is_active (w)))
3366 return; 4907 return;
3367 4908
… …
3378 4919
3379 EV_FREQUENT_CHECK; 4920 EV_FREQUENT_CHECK;
3380} 4921}
3381#endif 4922#endif
3382 4923
3383#if EV_ASYNC_ENABLE 4924#if EV_CLEANUP_ENABLE
3384void 4925void
3385ev_async_start (EV_P_ ev_async *w) 4926ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
3386{ 4927{
3387 if (expect_false (ev_is_active (w))) 4928 if (expect_false (ev_is_active (w)))
3388 return; 4929 return;
3389 4930
3390 evpipe_init (EV_A);
3391
3392 EV_FREQUENT_CHECK; 4931 EV_FREQUENT_CHECK;
3393 4932
3394 ev_start (EV_A_ (W)w, ++asynccnt); 4933 ev_start (EV_A_ (W)w, ++cleanupcnt);
3395 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 4934 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
3396 asyncs [asynccnt - 1] = w; 4935 cleanups [cleanupcnt - 1] = w;
3397 4936
4937 /* cleanup watchers should never keep a refcount on the loop */
4938 ev_unref (EV_A);
3398 EV_FREQUENT_CHECK; 4939 EV_FREQUENT_CHECK;
3399} 4940}
3400 4941
3401void 4942void
3402ev_async_stop (EV_P_ ev_async *w) 4943ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
3403{ 4944{
3404 clear_pending (EV_A_ (W)w); 4945 clear_pending (EV_A_ (W)w);
3405 if (expect_false (!ev_is_active (w))) 4946 if (expect_false (!ev_is_active (w)))
3406 return; 4947 return;
3407 4948
3408 EV_FREQUENT_CHECK; 4949 EV_FREQUENT_CHECK;
4950 ev_ref (EV_A);
4951
4952 {
4953 int active = ev_active (w);
4954
4955 cleanups [active - 1] = cleanups [--cleanupcnt];
4956 ev_active (cleanups [active - 1]) = active;
4957 }
4958
4959 ev_stop (EV_A_ (W)w);
4960
4961 EV_FREQUENT_CHECK;
4962}
4963#endif
4964
4965#if EV_ASYNC_ENABLE
4966void
4967ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
4968{
4969 if (expect_false (ev_is_active (w)))
4970 return;
4971
4972 w->sent = 0;
4973
4974 evpipe_init (EV_A);
4975
4976 EV_FREQUENT_CHECK;
4977
4978 ev_start (EV_A_ (W)w, ++asynccnt);
4979 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
4980 asyncs [asynccnt - 1] = w;
4981
4982 EV_FREQUENT_CHECK;
4983}
4984
4985void
4986ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
4987{
4988 clear_pending (EV_A_ (W)w);
4989 if (expect_false (!ev_is_active (w)))
4990 return;
4991
4992 EV_FREQUENT_CHECK;
3409 4993
3410 { 4994 {
3411 int active = ev_active (w); 4995 int active = ev_active (w);
3412 4996
3413 asyncs [active - 1] = asyncs [--asynccnt]; 4997 asyncs [active - 1] = asyncs [--asynccnt];
… …
3418 5002
3419 EV_FREQUENT_CHECK; 5003 EV_FREQUENT_CHECK;
3420} 5004}
3421 5005
3422void 5006void
3423ev_async_send (EV_P_ ev_async *w) 5007ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
3424{ 5008{
3425 w->sent = 1; 5009 w->sent = 1;
3426 evpipe_write (EV_A_ &async_pending); 5010 evpipe_write (EV_A_ &async_pending);
3427} 5011}
3428#endif 5012#endif
… …
3465 5049
3466 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5050 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3467} 5051}
3468 5052
3469void 5053void
3470ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 5054ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
3471{ 5055{
3472 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5056 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3473
3474 if (expect_false (!once))
3475 {
3476 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
3477 return;
3478 }
3479 5057
3480 once->cb = cb; 5058 once->cb = cb;
3481 once->arg = arg; 5059 once->arg = arg;
3482 5060
3483 ev_init (&once->io, once_cb_io); 5061 ev_init (&once->io, once_cb_io);
… …
3496} 5074}
3497 5075
3498/*****************************************************************************/ 5076/*****************************************************************************/
3499 5077
3500#if EV_WALK_ENABLE 5078#if EV_WALK_ENABLE
5079ecb_cold
3501void 5080void
3502ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 5081ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
3503{ 5082{
3504 int i, j; 5083 int i, j;
3505 ev_watcher_list *wl, *wn; 5084 ev_watcher_list *wl, *wn;
3506 5085
3507 if (types & (EV_IO | EV_EMBED)) 5086 if (types & (EV_IO | EV_EMBED))
… …
3550 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 5129 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3551#endif 5130#endif
3552 5131
3553#if EV_IDLE_ENABLE 5132#if EV_IDLE_ENABLE
3554 if (types & EV_IDLE) 5133 if (types & EV_IDLE)
3555 for (j = NUMPRI; i--; ) 5134 for (j = NUMPRI; j--; )
3556 for (i = idlecnt [j]; i--; ) 5135 for (i = idlecnt [j]; i--; )
3557 cb (EV_A_ EV_IDLE, idles [j][i]); 5136 cb (EV_A_ EV_IDLE, idles [j][i]);
3558#endif 5137#endif
3559 5138
3560#if EV_FORK_ENABLE 5139#if EV_FORK_ENABLE
… …
3568 if (types & EV_ASYNC) 5147 if (types & EV_ASYNC)
3569 for (i = asynccnt; i--; ) 5148 for (i = asynccnt; i--; )
3570 cb (EV_A_ EV_ASYNC, asyncs [i]); 5149 cb (EV_A_ EV_ASYNC, asyncs [i]);
3571#endif 5150#endif
3572 5151
5152#if EV_PREPARE_ENABLE
3573 if (types & EV_PREPARE) 5153 if (types & EV_PREPARE)
3574 for (i = preparecnt; i--; ) 5154 for (i = preparecnt; i--; )
3575#if EV_EMBED_ENABLE 5155# if EV_EMBED_ENABLE
3576 if (ev_cb (prepares [i]) != embed_prepare_cb) 5156 if (ev_cb (prepares [i]) != embed_prepare_cb)
3577#endif 5157# endif
3578 cb (EV_A_ EV_PREPARE, prepares [i]); 5158 cb (EV_A_ EV_PREPARE, prepares [i]);
5159#endif
3579 5160
5161#if EV_CHECK_ENABLE
3580 if (types & EV_CHECK) 5162 if (types & EV_CHECK)
3581 for (i = checkcnt; i--; ) 5163 for (i = checkcnt; i--; )
3582 cb (EV_A_ EV_CHECK, checks [i]); 5164 cb (EV_A_ EV_CHECK, checks [i]);
5165#endif
3583 5166
5167#if EV_SIGNAL_ENABLE
3584 if (types & EV_SIGNAL) 5168 if (types & EV_SIGNAL)
3585 for (i = 0; i < EV_NSIG - 1; ++i) 5169 for (i = 0; i < EV_NSIG - 1; ++i)
3586 for (wl = signals [i].head; wl; ) 5170 for (wl = signals [i].head; wl; )
3587 { 5171 {
3588 wn = wl->next; 5172 wn = wl->next;
3589 cb (EV_A_ EV_SIGNAL, wl); 5173 cb (EV_A_ EV_SIGNAL, wl);
3590 wl = wn; 5174 wl = wn;
3591 } 5175 }
5176#endif
3592 5177
5178#if EV_CHILD_ENABLE
3593 if (types & EV_CHILD) 5179 if (types & EV_CHILD)
3594 for (i = EV_PID_HASHSIZE; i--; ) 5180 for (i = (EV_PID_HASHSIZE); i--; )
3595 for (wl = childs [i]; wl; ) 5181 for (wl = childs [i]; wl; )
3596 { 5182 {
3597 wn = wl->next; 5183 wn = wl->next;
3598 cb (EV_A_ EV_CHILD, wl); 5184 cb (EV_A_ EV_CHILD, wl);
3599 wl = wn; 5185 wl = wn;
3600 } 5186 }
5187#endif
3601/* EV_STAT 0x00001000 /* stat data changed */ 5188/* EV_STAT 0x00001000 /* stat data changed */
3602/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 5189/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3603} 5190}
3604#endif 5191#endif
3605 5192
3606#if EV_MULTIPLICITY 5193#if EV_MULTIPLICITY
3607 #include "ev_wrap.h" 5194 #include "ev_wrap.h"
3608#endif 5195#endif
3609 5196
3610#ifdef __cplusplus
3611}
3612#endif
3613

Diff Legend

– Removed lines
+ Added lines
< Changed lines
> Changed lines