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Comparing libev/ev.c (file contents):
Revision 1.312 by root, Wed Aug 12 18:48:17 2009 UTC vs.
Revision 1.510 by root, Wed Aug 28 09:45:49 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
337#ifndef EV_USE_IOURING
338# if __linux
339# define EV_USE_IOURING 0
340# else
341# define EV_USE_IOURING 0
342# endif
343#endif
344
274#ifndef EV_USE_INOTIFY 345#ifndef EV_USE_INOTIFY
275# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 346# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
276# define EV_USE_INOTIFY 1 347# define EV_USE_INOTIFY EV_FEATURE_OS
277# else 348# else
278# define EV_USE_INOTIFY 0 349# define EV_USE_INOTIFY 0
279# endif 350# endif
280#endif 351#endif
281 352
282#ifndef EV_PID_HASHSIZE 353#ifndef EV_PID_HASHSIZE
283# if EV_MINIMAL 354# 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 355#endif
289 356
290#ifndef EV_INOTIFY_HASHSIZE 357#ifndef EV_INOTIFY_HASHSIZE
291# if EV_MINIMAL 358# 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 359#endif
297 360
298#ifndef EV_USE_EVENTFD 361#ifndef EV_USE_EVENTFD
299# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 362# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
300# define EV_USE_EVENTFD 1 363# define EV_USE_EVENTFD EV_FEATURE_OS
301# else 364# else
302# define EV_USE_EVENTFD 0 365# define EV_USE_EVENTFD 0
303# endif 366# endif
304#endif 367#endif
305 368
306#ifndef EV_USE_SIGNALFD 369#ifndef EV_USE_SIGNALFD
307# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 9)) 370# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
308# define EV_USE_SIGNALFD 1 371# define EV_USE_SIGNALFD EV_FEATURE_OS
309# else 372# else
310# define EV_USE_SIGNALFD 0 373# define EV_USE_SIGNALFD 0
311# endif 374# endif
312#endif 375#endif
313 376
… …
316# define EV_USE_4HEAP 1 379# define EV_USE_4HEAP 1
317# define EV_HEAP_CACHE_AT 1 380# define EV_HEAP_CACHE_AT 1
318#endif 381#endif
319 382
320#ifndef EV_VERIFY 383#ifndef EV_VERIFY
321# define EV_VERIFY !EV_MINIMAL 384# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
322#endif 385#endif
323 386
324#ifndef EV_USE_4HEAP 387#ifndef EV_USE_4HEAP
325# define EV_USE_4HEAP !EV_MINIMAL 388# define EV_USE_4HEAP EV_FEATURE_DATA
326#endif 389#endif
327 390
328#ifndef EV_HEAP_CACHE_AT 391#ifndef EV_HEAP_CACHE_AT
329# define EV_HEAP_CACHE_AT !EV_MINIMAL 392# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
393#endif
394
395#ifdef __ANDROID__
396/* supposedly, android doesn't typedef fd_mask */
397# undef EV_USE_SELECT
398# define EV_USE_SELECT 0
399/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
400# undef EV_USE_CLOCK_SYSCALL
401# define EV_USE_CLOCK_SYSCALL 0
402#endif
403
404/* aix's poll.h seems to cause lots of trouble */
405#ifdef _AIX
406/* AIX has a completely broken poll.h header */
407# undef EV_USE_POLL
408# define EV_USE_POLL 0
330#endif 409#endif
331 410
332/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 411/* 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. */ 412/* which makes programs even slower. might work on other unices, too. */
334#if EV_USE_CLOCK_SYSCALL 413#if EV_USE_CLOCK_SYSCALL
335# include <syscall.h> 414# include <sys/syscall.h>
336# ifdef SYS_clock_gettime 415# ifdef SYS_clock_gettime
337# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 416# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
338# undef EV_USE_MONOTONIC 417# undef EV_USE_MONOTONIC
339# define EV_USE_MONOTONIC 1 418# define EV_USE_MONOTONIC 1
419# define EV_NEED_SYSCALL 1
340# else 420# else
341# undef EV_USE_CLOCK_SYSCALL 421# undef EV_USE_CLOCK_SYSCALL
342# define EV_USE_CLOCK_SYSCALL 0 422# define EV_USE_CLOCK_SYSCALL 0
343# endif 423# endif
344#endif 424#endif
… …
359# undef EV_USE_INOTIFY 439# undef EV_USE_INOTIFY
360# define EV_USE_INOTIFY 0 440# define EV_USE_INOTIFY 0
361#endif 441#endif
362 442
363#if !EV_USE_NANOSLEEP 443#if !EV_USE_NANOSLEEP
364# ifndef _WIN32 444/* hp-ux has it in sys/time.h, which we unconditionally include above */
445# if !defined _WIN32 && !defined __hpux
365# include <sys/select.h> 446# include <sys/select.h>
366# endif 447# endif
367#endif 448#endif
368 449
450#if EV_USE_LINUXAIO
451# include <sys/syscall.h>
452# if SYS_io_getevents && EV_USE_EPOLL /* linuxaio backend requires epoll backend */
453# define EV_NEED_SYSCALL 1
454# else
455# undef EV_USE_LINUXAIO
456# define EV_USE_LINUXAIO 0
457# endif
458#endif
459
460#if EV_USE_IOURING
461# include <sys/syscall.h>
462# if !SYS_io_uring_setup && __linux && !__alpha
463# define SYS_io_uring_setup 425
464# define SYS_io_uring_enter 426
465# define SYS_io_uring_wregister 427
466# endif
467# if SYS_io_uring_setup && EV_USE_EPOLL /* iouring backend requires epoll backend */
468# define EV_NEED_SYSCALL 1
469# else
470# undef EV_USE_IOURING
471# define EV_USE_IOURING 0
472# endif
473#endif
474
369#if EV_USE_INOTIFY 475#if EV_USE_INOTIFY
370# include <sys/utsname.h>
371# include <sys/statfs.h> 476# include <sys/statfs.h>
372# include <sys/inotify.h> 477# include <sys/inotify.h>
373/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 478/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
374# ifndef IN_DONT_FOLLOW 479# ifndef IN_DONT_FOLLOW
375# undef EV_USE_INOTIFY 480# undef EV_USE_INOTIFY
376# define EV_USE_INOTIFY 0 481# define EV_USE_INOTIFY 0
377# endif 482# endif
378#endif
379
380#if EV_SELECT_IS_WINSOCKET
381# include <winsock.h>
382#endif 483#endif
383 484
384#if EV_USE_EVENTFD 485#if EV_USE_EVENTFD
385/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 486/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
386# include <stdint.h> 487# include <stdint.h>
… …
392# define EFD_CLOEXEC O_CLOEXEC 493# define EFD_CLOEXEC O_CLOEXEC
393# else 494# else
394# define EFD_CLOEXEC 02000000 495# define EFD_CLOEXEC 02000000
395# endif 496# endif
396# endif 497# endif
397# ifdef __cplusplus 498EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
398extern "C" { 499#endif
500
501#if EV_USE_SIGNALFD
502/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
503# include <stdint.h>
504# ifndef SFD_NONBLOCK
505# define SFD_NONBLOCK O_NONBLOCK
399# endif 506# endif
400int eventfd (unsigned int initval, int flags); 507# ifndef SFD_CLOEXEC
401# ifdef __cplusplus 508# ifdef O_CLOEXEC
402} 509# define SFD_CLOEXEC O_CLOEXEC
510# else
511# define SFD_CLOEXEC 02000000
512# endif
403# endif 513# endif
404#endif 514EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
405 515
406#if EV_USE_SIGNALFD 516struct signalfd_siginfo
407# include <sys/signalfd.h> 517{
518 uint32_t ssi_signo;
519 char pad[128 - sizeof (uint32_t)];
520};
408#endif 521#endif
409 522
410/**/ 523/*****************************************************************************/
411 524
412#if EV_VERIFY >= 3 525#if EV_VERIFY >= 3
413# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 526# define EV_FREQUENT_CHECK ev_verify (EV_A)
414#else 527#else
415# define EV_FREQUENT_CHECK do { } while (0) 528# define EV_FREQUENT_CHECK do { } while (0)
416#endif 529#endif
417 530
418/* 531/*
419 * This is used to avoid floating point rounding problems. 532 * This is used to work around floating point rounding problems.
420 * It is added to ev_rt_now when scheduling periodics
421 * to ensure progress, time-wise, even when rounding
422 * errors are against us.
423 * This value is good at least till the year 4000. 533 * This value is good at least till the year 4000.
424 * Better solutions welcome.
425 */ 534 */
426#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 535#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
536/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
427 537
428#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 538#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
429#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 539#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
430/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
431 540
541/* find a portable timestamp that is "always" in the future but fits into time_t.
542 * this is quite hard, and we are mostly guessing - we handle 32 bit signed/unsigned time_t,
543 * and sizes larger than 32 bit, and maybe the unlikely floating point time_t */
544#define EV_TSTAMP_HUGE \
545 (sizeof (time_t) >= 8 ? 10000000000000. \
546 : 0 < (time_t)4294967295 ? 4294967295. \
547 : 2147483647.) \
548
549#ifndef EV_TS_CONST
550# define EV_TS_CONST(nv) nv
551# define EV_TS_TO_MSEC(a) a * 1e3 + 0.9999
552# define EV_TS_FROM_USEC(us) us * 1e-6
553# define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
554# define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
555# define EV_TV_GET(tv) ((tv).tv_sec + (tv).tv_usec * 1e-6)
556# define EV_TS_GET(ts) ((ts).tv_sec + (ts).tv_nsec * 1e-9)
557#endif
558
559/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
560/* ECB.H BEGIN */
561/*
562 * libecb - http://software.schmorp.de/pkg/libecb
563 *
564 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
565 * Copyright (©) 2011 Emanuele Giaquinta
566 * All rights reserved.
567 *
568 * Redistribution and use in source and binary forms, with or without modifica-
569 * tion, are permitted provided that the following conditions are met:
570 *
571 * 1. Redistributions of source code must retain the above copyright notice,
572 * this list of conditions and the following disclaimer.
573 *
574 * 2. Redistributions in binary form must reproduce the above copyright
575 * notice, this list of conditions and the following disclaimer in the
576 * documentation and/or other materials provided with the distribution.
577 *
578 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
579 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
580 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
581 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
582 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
583 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
584 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
585 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
586 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
587 * OF THE POSSIBILITY OF SUCH DAMAGE.
588 *
589 * Alternatively, the contents of this file may be used under the terms of
590 * the GNU General Public License ("GPL") version 2 or any later version,
591 * in which case the provisions of the GPL are applicable instead of
592 * the above. If you wish to allow the use of your version of this file
593 * only under the terms of the GPL and not to allow others to use your
594 * version of this file under the BSD license, indicate your decision
595 * by deleting the provisions above and replace them with the notice
596 * and other provisions required by the GPL. If you do not delete the
597 * provisions above, a recipient may use your version of this file under
598 * either the BSD or the GPL.
599 */
600
601#ifndef ECB_H
602#define ECB_H
603
604/* 16 bits major, 16 bits minor */
605#define ECB_VERSION 0x00010006
606
607#ifdef _WIN32
608 typedef signed char int8_t;
609 typedef unsigned char uint8_t;
610 typedef signed short int16_t;
611 typedef unsigned short uint16_t;
612 typedef signed int int32_t;
613 typedef unsigned int uint32_t;
432#if __GNUC__ >= 4 614 #if __GNUC__
433# define expect(expr,value) __builtin_expect ((expr),(value)) 615 typedef signed long long int64_t;
434# define noinline __attribute__ ((noinline)) 616 typedef unsigned long long uint64_t;
617 #else /* _MSC_VER || __BORLANDC__ */
618 typedef signed __int64 int64_t;
619 typedef unsigned __int64 uint64_t;
620 #endif
621 #ifdef _WIN64
622 #define ECB_PTRSIZE 8
623 typedef uint64_t uintptr_t;
624 typedef int64_t intptr_t;
625 #else
626 #define ECB_PTRSIZE 4
627 typedef uint32_t uintptr_t;
628 typedef int32_t intptr_t;
629 #endif
435#else 630#else
436# define expect(expr,value) (expr) 631 #include <inttypes.h>
437# define noinline 632 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
438# if __STDC_VERSION__ < 199901L && __GNUC__ < 2 633 #define ECB_PTRSIZE 8
439# define inline 634 #else
635 #define ECB_PTRSIZE 4
636 #endif
440# endif 637#endif
638
639#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
640#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
641
642/* work around x32 idiocy by defining proper macros */
643#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
644 #if _ILP32
645 #define ECB_AMD64_X32 1
646 #else
647 #define ECB_AMD64 1
441#endif 648 #endif
649#endif
442 650
443#define expect_false(expr) expect ((expr) != 0, 0) 651/* many compilers define _GNUC_ to some versions but then only implement
444#define expect_true(expr) expect ((expr) != 0, 1) 652 * what their idiot authors think are the "more important" extensions,
445#define inline_size static inline 653 * causing enormous grief in return for some better fake benchmark numbers.
446 654 * or so.
447#if EV_MINIMAL 655 * we try to detect these and simply assume they are not gcc - if they have
448# define inline_speed static noinline 656 * an issue with that they should have done it right in the first place.
657 */
658#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
659 #define ECB_GCC_VERSION(major,minor) 0
449#else 660#else
661 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
662#endif
663
664#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
665
666#if __clang__ && defined __has_builtin
667 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
668#else
669 #define ECB_CLANG_BUILTIN(x) 0
670#endif
671
672#if __clang__ && defined __has_extension
673 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
674#else
675 #define ECB_CLANG_EXTENSION(x) 0
676#endif
677
678#define ECB_CPP (__cplusplus+0)
679#define ECB_CPP11 (__cplusplus >= 201103L)
680#define ECB_CPP14 (__cplusplus >= 201402L)
681#define ECB_CPP17 (__cplusplus >= 201703L)
682
683#if ECB_CPP
684 #define ECB_C 0
685 #define ECB_STDC_VERSION 0
686#else
687 #define ECB_C 1
688 #define ECB_STDC_VERSION __STDC_VERSION__
689#endif
690
691#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
692#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
693#define ECB_C17 (ECB_STDC_VERSION >= 201710L)
694
695#if ECB_CPP
696 #define ECB_EXTERN_C extern "C"
697 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
698 #define ECB_EXTERN_C_END }
699#else
700 #define ECB_EXTERN_C extern
701 #define ECB_EXTERN_C_BEG
702 #define ECB_EXTERN_C_END
703#endif
704
705/*****************************************************************************/
706
707/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
708/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
709
710#if ECB_NO_THREADS
711 #define ECB_NO_SMP 1
712#endif
713
714#if ECB_NO_SMP
715 #define ECB_MEMORY_FENCE do { } while (0)
716#endif
717
718/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
719#if __xlC__ && ECB_CPP
720 #include <builtins.h>
721#endif
722
723#if 1400 <= _MSC_VER
724 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
725#endif
726
727#ifndef ECB_MEMORY_FENCE
728 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
729 #define ECB_MEMORY_FENCE_RELAXED __asm__ __volatile__ ("" : : : "memory")
730 #if __i386 || __i386__
731 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
732 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
733 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
734 #elif ECB_GCC_AMD64
735 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
736 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
737 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
738 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
739 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
740 #elif defined __ARM_ARCH_2__ \
741 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
742 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
743 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
744 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
745 || defined __ARM_ARCH_5TEJ__
746 /* should not need any, unless running old code on newer cpu - arm doesn't support that */
747 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
748 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
749 || defined __ARM_ARCH_6T2__
750 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
751 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
752 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
753 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
754 #elif __aarch64__
755 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
756 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
757 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
758 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
759 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
760 #elif defined __s390__ || defined __s390x__
761 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
762 #elif defined __mips__
763 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
764 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
765 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
766 #elif defined __alpha__
767 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
768 #elif defined __hppa__
769 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
770 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
771 #elif defined __ia64__
772 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
773 #elif defined __m68k__
774 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
775 #elif defined __m88k__
776 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
777 #elif defined __sh__
778 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
779 #endif
780 #endif
781#endif
782
783#ifndef ECB_MEMORY_FENCE
784 #if ECB_GCC_VERSION(4,7)
785 /* see comment below (stdatomic.h) about the C11 memory model. */
786 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
787 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
788 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
789 #define ECB_MEMORY_FENCE_RELAXED __atomic_thread_fence (__ATOMIC_RELAXED)
790
791 #elif ECB_CLANG_EXTENSION(c_atomic)
792 /* see comment below (stdatomic.h) about the C11 memory model. */
793 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
794 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
795 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
796 #define ECB_MEMORY_FENCE_RELAXED __c11_atomic_thread_fence (__ATOMIC_RELAXED)
797
798 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
799 #define ECB_MEMORY_FENCE __sync_synchronize ()
800 #elif _MSC_VER >= 1500 /* VC++ 2008 */
801 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
802 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
803 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
804 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
805 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
806 #elif _MSC_VER >= 1400 /* VC++ 2005 */
807 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
808 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
809 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
810 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
811 #elif defined _WIN32
812 #include <WinNT.h>
813 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
814 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
815 #include <mbarrier.h>
816 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
817 #define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier ()
818 #define ECB_MEMORY_FENCE_RELEASE __machine_rel_barrier ()
819 #define ECB_MEMORY_FENCE_RELAXED __compiler_barrier ()
820 #elif __xlC__
821 #define ECB_MEMORY_FENCE __sync ()
822 #endif
823#endif
824
825#ifndef ECB_MEMORY_FENCE
826 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
827 /* we assume that these memory fences work on all variables/all memory accesses, */
828 /* not just C11 atomics and atomic accesses */
829 #include <stdatomic.h>
830 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
831 #define ECB_MEMORY_FENCE_ACQUIRE atomic_thread_fence (memory_order_acquire)
832 #define ECB_MEMORY_FENCE_RELEASE atomic_thread_fence (memory_order_release)
833 #endif
834#endif
835
836#ifndef ECB_MEMORY_FENCE
837 #if !ECB_AVOID_PTHREADS
838 /*
839 * if you get undefined symbol references to pthread_mutex_lock,
840 * or failure to find pthread.h, then you should implement
841 * the ECB_MEMORY_FENCE operations for your cpu/compiler
842 * OR provide pthread.h and link against the posix thread library
843 * of your system.
844 */
845 #include <pthread.h>
846 #define ECB_NEEDS_PTHREADS 1
847 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
848
849 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
850 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
851 #endif
852#endif
853
854#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
855 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
856#endif
857
858#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
859 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
860#endif
861
862#if !defined ECB_MEMORY_FENCE_RELAXED && defined ECB_MEMORY_FENCE
863 #define ECB_MEMORY_FENCE_RELAXED ECB_MEMORY_FENCE /* very heavy-handed */
864#endif
865
866/*****************************************************************************/
867
868#if ECB_CPP
869 #define ecb_inline static inline
870#elif ECB_GCC_VERSION(2,5)
871 #define ecb_inline static __inline__
872#elif ECB_C99
873 #define ecb_inline static inline
874#else
875 #define ecb_inline static
876#endif
877
878#if ECB_GCC_VERSION(3,3)
879 #define ecb_restrict __restrict__
880#elif ECB_C99
881 #define ecb_restrict restrict
882#else
883 #define ecb_restrict
884#endif
885
886typedef int ecb_bool;
887
888#define ECB_CONCAT_(a, b) a ## b
889#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
890#define ECB_STRINGIFY_(a) # a
891#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
892#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
893
894#define ecb_function_ ecb_inline
895
896#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
897 #define ecb_attribute(attrlist) __attribute__ (attrlist)
898#else
899 #define ecb_attribute(attrlist)
900#endif
901
902#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
903 #define ecb_is_constant(expr) __builtin_constant_p (expr)
904#else
905 /* possible C11 impl for integral types
906 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
907 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
908
909 #define ecb_is_constant(expr) 0
910#endif
911
912#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
913 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
914#else
915 #define ecb_expect(expr,value) (expr)
916#endif
917
918#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
919 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
920#else
921 #define ecb_prefetch(addr,rw,locality)
922#endif
923
924/* no emulation for ecb_decltype */
925#if ECB_CPP11
926 // older implementations might have problems with decltype(x)::type, work around it
927 template<class T> struct ecb_decltype_t { typedef T type; };
928 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
929#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
930 #define ecb_decltype(x) __typeof__ (x)
931#endif
932
933#if _MSC_VER >= 1300
934 #define ecb_deprecated __declspec (deprecated)
935#else
936 #define ecb_deprecated ecb_attribute ((__deprecated__))
937#endif
938
939#if _MSC_VER >= 1500
940 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
941#elif ECB_GCC_VERSION(4,5)
942 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
943#else
944 #define ecb_deprecated_message(msg) ecb_deprecated
945#endif
946
947#if _MSC_VER >= 1400
948 #define ecb_noinline __declspec (noinline)
949#else
950 #define ecb_noinline ecb_attribute ((__noinline__))
951#endif
952
953#define ecb_unused ecb_attribute ((__unused__))
954#define ecb_const ecb_attribute ((__const__))
955#define ecb_pure ecb_attribute ((__pure__))
956
957#if ECB_C11 || __IBMC_NORETURN
958 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
959 #define ecb_noreturn _Noreturn
960#elif ECB_CPP11
961 #define ecb_noreturn [[noreturn]]
962#elif _MSC_VER >= 1200
963 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
964 #define ecb_noreturn __declspec (noreturn)
965#else
966 #define ecb_noreturn ecb_attribute ((__noreturn__))
967#endif
968
969#if ECB_GCC_VERSION(4,3)
970 #define ecb_artificial ecb_attribute ((__artificial__))
971 #define ecb_hot ecb_attribute ((__hot__))
972 #define ecb_cold ecb_attribute ((__cold__))
973#else
974 #define ecb_artificial
975 #define ecb_hot
976 #define ecb_cold
977#endif
978
979/* put around conditional expressions if you are very sure that the */
980/* expression is mostly true or mostly false. note that these return */
981/* booleans, not the expression. */
982#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
983#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
984/* for compatibility to the rest of the world */
985#define ecb_likely(expr) ecb_expect_true (expr)
986#define ecb_unlikely(expr) ecb_expect_false (expr)
987
988/* count trailing zero bits and count # of one bits */
989#if ECB_GCC_VERSION(3,4) \
990 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
991 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
992 && ECB_CLANG_BUILTIN(__builtin_popcount))
993 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
994 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
995 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
996 #define ecb_ctz32(x) __builtin_ctz (x)
997 #define ecb_ctz64(x) __builtin_ctzll (x)
998 #define ecb_popcount32(x) __builtin_popcount (x)
999 /* no popcountll */
1000#else
1001 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
1002 ecb_function_ ecb_const int
1003 ecb_ctz32 (uint32_t x)
1004 {
1005#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1006 unsigned long r;
1007 _BitScanForward (&r, x);
1008 return (int)r;
1009#else
1010 int r = 0;
1011
1012 x &= ~x + 1; /* this isolates the lowest bit */
1013
1014#if ECB_branchless_on_i386
1015 r += !!(x & 0xaaaaaaaa) << 0;
1016 r += !!(x & 0xcccccccc) << 1;
1017 r += !!(x & 0xf0f0f0f0) << 2;
1018 r += !!(x & 0xff00ff00) << 3;
1019 r += !!(x & 0xffff0000) << 4;
1020#else
1021 if (x & 0xaaaaaaaa) r += 1;
1022 if (x & 0xcccccccc) r += 2;
1023 if (x & 0xf0f0f0f0) r += 4;
1024 if (x & 0xff00ff00) r += 8;
1025 if (x & 0xffff0000) r += 16;
1026#endif
1027
1028 return r;
1029#endif
1030 }
1031
1032 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
1033 ecb_function_ ecb_const int
1034 ecb_ctz64 (uint64_t x)
1035 {
1036#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1037 unsigned long r;
1038 _BitScanForward64 (&r, x);
1039 return (int)r;
1040#else
1041 int shift = x & 0xffffffff ? 0 : 32;
1042 return ecb_ctz32 (x >> shift) + shift;
1043#endif
1044 }
1045
1046 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
1047 ecb_function_ ecb_const int
1048 ecb_popcount32 (uint32_t x)
1049 {
1050 x -= (x >> 1) & 0x55555555;
1051 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
1052 x = ((x >> 4) + x) & 0x0f0f0f0f;
1053 x *= 0x01010101;
1054
1055 return x >> 24;
1056 }
1057
1058 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
1059 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
1060 {
1061#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1062 unsigned long r;
1063 _BitScanReverse (&r, x);
1064 return (int)r;
1065#else
1066 int r = 0;
1067
1068 if (x >> 16) { x >>= 16; r += 16; }
1069 if (x >> 8) { x >>= 8; r += 8; }
1070 if (x >> 4) { x >>= 4; r += 4; }
1071 if (x >> 2) { x >>= 2; r += 2; }
1072 if (x >> 1) { r += 1; }
1073
1074 return r;
1075#endif
1076 }
1077
1078 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
1079 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
1080 {
1081#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1082 unsigned long r;
1083 _BitScanReverse64 (&r, x);
1084 return (int)r;
1085#else
1086 int r = 0;
1087
1088 if (x >> 32) { x >>= 32; r += 32; }
1089
1090 return r + ecb_ld32 (x);
1091#endif
1092 }
1093#endif
1094
1095ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
1096ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
1097ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
1098ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
1099
1100ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
1101ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
1102{
1103 return ( (x * 0x0802U & 0x22110U)
1104 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
1105}
1106
1107ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
1108ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
1109{
1110 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
1111 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
1112 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
1113 x = ( x >> 8 ) | ( x << 8);
1114
1115 return x;
1116}
1117
1118ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
1119ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
1120{
1121 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
1122 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
1123 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
1124 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
1125 x = ( x >> 16 ) | ( x << 16);
1126
1127 return x;
1128}
1129
1130/* popcount64 is only available on 64 bit cpus as gcc builtin */
1131/* so for this version we are lazy */
1132ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
1133ecb_function_ ecb_const int
1134ecb_popcount64 (uint64_t x)
1135{
1136 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
1137}
1138
1139ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
1140ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
1141ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
1142ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
1143ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
1144ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
1145ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
1146ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
1147
1148ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
1149ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
1150ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
1151ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
1152ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
1153ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
1154ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
1155ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
1156
1157#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1158 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1159 #define ecb_bswap16(x) __builtin_bswap16 (x)
1160 #else
1161 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1162 #endif
1163 #define ecb_bswap32(x) __builtin_bswap32 (x)
1164 #define ecb_bswap64(x) __builtin_bswap64 (x)
1165#elif _MSC_VER
1166 #include <stdlib.h>
1167 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1168 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1169 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
1170#else
1171 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
1172 ecb_function_ ecb_const uint16_t
1173 ecb_bswap16 (uint16_t x)
1174 {
1175 return ecb_rotl16 (x, 8);
1176 }
1177
1178 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
1179 ecb_function_ ecb_const uint32_t
1180 ecb_bswap32 (uint32_t x)
1181 {
1182 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
1183 }
1184
1185 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
1186 ecb_function_ ecb_const uint64_t
1187 ecb_bswap64 (uint64_t x)
1188 {
1189 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
1190 }
1191#endif
1192
1193#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
1194 #define ecb_unreachable() __builtin_unreachable ()
1195#else
1196 /* this seems to work fine, but gcc always emits a warning for it :/ */
1197 ecb_inline ecb_noreturn void ecb_unreachable (void);
1198 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
1199#endif
1200
1201/* try to tell the compiler that some condition is definitely true */
1202#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
1203
1204ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
1205ecb_inline ecb_const uint32_t
1206ecb_byteorder_helper (void)
1207{
1208 /* the union code still generates code under pressure in gcc, */
1209 /* but less than using pointers, and always seems to */
1210 /* successfully return a constant. */
1211 /* the reason why we have this horrible preprocessor mess */
1212 /* is to avoid it in all cases, at least on common architectures */
1213 /* or when using a recent enough gcc version (>= 4.6) */
1214#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1215 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1216 #define ECB_LITTLE_ENDIAN 1
1217 return 0x44332211;
1218#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1219 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1220 #define ECB_BIG_ENDIAN 1
1221 return 0x11223344;
1222#else
1223 union
1224 {
1225 uint8_t c[4];
1226 uint32_t u;
1227 } u = { 0x11, 0x22, 0x33, 0x44 };
1228 return u.u;
1229#endif
1230}
1231
1232ecb_inline ecb_const ecb_bool ecb_big_endian (void);
1233ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
1234ecb_inline ecb_const ecb_bool ecb_little_endian (void);
1235ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
1236
1237#if ECB_GCC_VERSION(3,0) || ECB_C99
1238 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1239#else
1240 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1241#endif
1242
1243#if ECB_CPP
1244 template<typename T>
1245 static inline T ecb_div_rd (T val, T div)
1246 {
1247 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1248 }
1249 template<typename T>
1250 static inline T ecb_div_ru (T val, T div)
1251 {
1252 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1253 }
1254#else
1255 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1256 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1257#endif
1258
1259#if ecb_cplusplus_does_not_suck
1260 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1261 template<typename T, int N>
1262 static inline int ecb_array_length (const T (&arr)[N])
1263 {
1264 return N;
1265 }
1266#else
1267 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1268#endif
1269
1270ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1271ecb_function_ ecb_const uint32_t
1272ecb_binary16_to_binary32 (uint32_t x)
1273{
1274 unsigned int s = (x & 0x8000) << (31 - 15);
1275 int e = (x >> 10) & 0x001f;
1276 unsigned int m = x & 0x03ff;
1277
1278 if (ecb_expect_false (e == 31))
1279 /* infinity or NaN */
1280 e = 255 - (127 - 15);
1281 else if (ecb_expect_false (!e))
1282 {
1283 if (ecb_expect_true (!m))
1284 /* zero, handled by code below by forcing e to 0 */
1285 e = 0 - (127 - 15);
1286 else
1287 {
1288 /* subnormal, renormalise */
1289 unsigned int s = 10 - ecb_ld32 (m);
1290
1291 m = (m << s) & 0x3ff; /* mask implicit bit */
1292 e -= s - 1;
1293 }
1294 }
1295
1296 /* e and m now are normalised, or zero, (or inf or nan) */
1297 e += 127 - 15;
1298
1299 return s | (e << 23) | (m << (23 - 10));
1300}
1301
1302ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1303ecb_function_ ecb_const uint16_t
1304ecb_binary32_to_binary16 (uint32_t x)
1305{
1306 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1307 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1308 unsigned int m = x & 0x007fffff;
1309
1310 x &= 0x7fffffff;
1311
1312 /* if it's within range of binary16 normals, use fast path */
1313 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1314 {
1315 /* mantissa round-to-even */
1316 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1317
1318 /* handle overflow */
1319 if (ecb_expect_false (m >= 0x00800000))
1320 {
1321 m >>= 1;
1322 e += 1;
1323 }
1324
1325 return s | (e << 10) | (m >> (23 - 10));
1326 }
1327
1328 /* handle large numbers and infinity */
1329 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1330 return s | 0x7c00;
1331
1332 /* handle zero, subnormals and small numbers */
1333 if (ecb_expect_true (x < 0x38800000))
1334 {
1335 /* zero */
1336 if (ecb_expect_true (!x))
1337 return s;
1338
1339 /* handle subnormals */
1340
1341 /* too small, will be zero */
1342 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1343 return s;
1344
1345 m |= 0x00800000; /* make implicit bit explicit */
1346
1347 /* very tricky - we need to round to the nearest e (+10) bit value */
1348 {
1349 unsigned int bits = 14 - e;
1350 unsigned int half = (1 << (bits - 1)) - 1;
1351 unsigned int even = (m >> bits) & 1;
1352
1353 /* if this overflows, we will end up with a normalised number */
1354 m = (m + half + even) >> bits;
1355 }
1356
1357 return s | m;
1358 }
1359
1360 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1361 m >>= 13;
1362
1363 return s | 0x7c00 | m | !m;
1364}
1365
1366/*******************************************************************************/
1367/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1368
1369/* basically, everything uses "ieee pure-endian" floating point numbers */
1370/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1371#if 0 \
1372 || __i386 || __i386__ \
1373 || ECB_GCC_AMD64 \
1374 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1375 || defined __s390__ || defined __s390x__ \
1376 || defined __mips__ \
1377 || defined __alpha__ \
1378 || defined __hppa__ \
1379 || defined __ia64__ \
1380 || defined __m68k__ \
1381 || defined __m88k__ \
1382 || defined __sh__ \
1383 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1384 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1385 || defined __aarch64__
1386 #define ECB_STDFP 1
1387 #include <string.h> /* for memcpy */
1388#else
1389 #define ECB_STDFP 0
1390#endif
1391
1392#ifndef ECB_NO_LIBM
1393
1394 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1395
1396 /* only the oldest of old doesn't have this one. solaris. */
1397 #ifdef INFINITY
1398 #define ECB_INFINITY INFINITY
1399 #else
1400 #define ECB_INFINITY HUGE_VAL
1401 #endif
1402
1403 #ifdef NAN
1404 #define ECB_NAN NAN
1405 #else
1406 #define ECB_NAN ECB_INFINITY
1407 #endif
1408
1409 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1410 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1411 #define ecb_frexpf(x,e) frexpf ((x), (e))
1412 #else
1413 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1414 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1415 #endif
1416
1417 /* convert a float to ieee single/binary32 */
1418 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1419 ecb_function_ ecb_const uint32_t
1420 ecb_float_to_binary32 (float x)
1421 {
1422 uint32_t r;
1423
1424 #if ECB_STDFP
1425 memcpy (&r, &x, 4);
1426 #else
1427 /* slow emulation, works for anything but -0 */
1428 uint32_t m;
1429 int e;
1430
1431 if (x == 0e0f ) return 0x00000000U;
1432 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1433 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1434 if (x != x ) return 0x7fbfffffU;
1435
1436 m = ecb_frexpf (x, &e) * 0x1000000U;
1437
1438 r = m & 0x80000000U;
1439
1440 if (r)
1441 m = -m;
1442
1443 if (e <= -126)
1444 {
1445 m &= 0xffffffU;
1446 m >>= (-125 - e);
1447 e = -126;
1448 }
1449
1450 r |= (e + 126) << 23;
1451 r |= m & 0x7fffffU;
1452 #endif
1453
1454 return r;
1455 }
1456
1457 /* converts an ieee single/binary32 to a float */
1458 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1459 ecb_function_ ecb_const float
1460 ecb_binary32_to_float (uint32_t x)
1461 {
1462 float r;
1463
1464 #if ECB_STDFP
1465 memcpy (&r, &x, 4);
1466 #else
1467 /* emulation, only works for normals and subnormals and +0 */
1468 int neg = x >> 31;
1469 int e = (x >> 23) & 0xffU;
1470
1471 x &= 0x7fffffU;
1472
1473 if (e)
1474 x |= 0x800000U;
1475 else
1476 e = 1;
1477
1478 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1479 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1480
1481 r = neg ? -r : r;
1482 #endif
1483
1484 return r;
1485 }
1486
1487 /* convert a double to ieee double/binary64 */
1488 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1489 ecb_function_ ecb_const uint64_t
1490 ecb_double_to_binary64 (double x)
1491 {
1492 uint64_t r;
1493
1494 #if ECB_STDFP
1495 memcpy (&r, &x, 8);
1496 #else
1497 /* slow emulation, works for anything but -0 */
1498 uint64_t m;
1499 int e;
1500
1501 if (x == 0e0 ) return 0x0000000000000000U;
1502 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1503 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1504 if (x != x ) return 0X7ff7ffffffffffffU;
1505
1506 m = frexp (x, &e) * 0x20000000000000U;
1507
1508 r = m & 0x8000000000000000;;
1509
1510 if (r)
1511 m = -m;
1512
1513 if (e <= -1022)
1514 {
1515 m &= 0x1fffffffffffffU;
1516 m >>= (-1021 - e);
1517 e = -1022;
1518 }
1519
1520 r |= ((uint64_t)(e + 1022)) << 52;
1521 r |= m & 0xfffffffffffffU;
1522 #endif
1523
1524 return r;
1525 }
1526
1527 /* converts an ieee double/binary64 to a double */
1528 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1529 ecb_function_ ecb_const double
1530 ecb_binary64_to_double (uint64_t x)
1531 {
1532 double r;
1533
1534 #if ECB_STDFP
1535 memcpy (&r, &x, 8);
1536 #else
1537 /* emulation, only works for normals and subnormals and +0 */
1538 int neg = x >> 63;
1539 int e = (x >> 52) & 0x7ffU;
1540
1541 x &= 0xfffffffffffffU;
1542
1543 if (e)
1544 x |= 0x10000000000000U;
1545 else
1546 e = 1;
1547
1548 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1549 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1550
1551 r = neg ? -r : r;
1552 #endif
1553
1554 return r;
1555 }
1556
1557 /* convert a float to ieee half/binary16 */
1558 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1559 ecb_function_ ecb_const uint16_t
1560 ecb_float_to_binary16 (float x)
1561 {
1562 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1563 }
1564
1565 /* convert an ieee half/binary16 to float */
1566 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1567 ecb_function_ ecb_const float
1568 ecb_binary16_to_float (uint16_t x)
1569 {
1570 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1571 }
1572
1573#endif
1574
1575#endif
1576
1577/* ECB.H END */
1578
1579#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1580/* if your architecture doesn't need memory fences, e.g. because it is
1581 * single-cpu/core, or if you use libev in a project that doesn't use libev
1582 * from multiple threads, then you can define ECB_NO_THREADS when compiling
1583 * libev, in which cases the memory fences become nops.
1584 * alternatively, you can remove this #error and link against libpthread,
1585 * which will then provide the memory fences.
1586 */
1587# error "memory fences not defined for your architecture, please report"
1588#endif
1589
1590#ifndef ECB_MEMORY_FENCE
1591# define ECB_MEMORY_FENCE do { } while (0)
1592# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1593# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1594#endif
1595
1596#define inline_size ecb_inline
1597
1598#if EV_FEATURE_CODE
450# define inline_speed static inline 1599# define inline_speed ecb_inline
1600#else
1601# define inline_speed ecb_noinline static
451#endif 1602#endif
1603
1604/*****************************************************************************/
1605/* raw syscall wrappers */
1606
1607#if EV_NEED_SYSCALL
1608
1609#include <sys/syscall.h>
1610
1611/*
1612 * define some syscall wrappers for common architectures
1613 * this is mostly for nice looks during debugging, not performance.
1614 * our syscalls return < 0, not == -1, on error. which is good
1615 * enough for linux aio.
1616 * TODO: arm is also common nowadays, maybe even mips and x86
1617 * TODO: after implementing this, it suddenly looks like overkill, but its hard to remove...
1618 */
1619#if __GNUC__ && __linux && ECB_AMD64 && !defined __OPTIMIZE_SIZE__
1620 /* the costly errno access probably kills this for size optimisation */
1621
1622 #define ev_syscall(nr,narg,arg1,arg2,arg3,arg4,arg5,arg6) \
1623 ({ \
1624 long res; \
1625 register unsigned long r6 __asm__ ("r9" ); \
1626 register unsigned long r5 __asm__ ("r8" ); \
1627 register unsigned long r4 __asm__ ("r10"); \
1628 register unsigned long r3 __asm__ ("rdx"); \
1629 register unsigned long r2 __asm__ ("rsi"); \
1630 register unsigned long r1 __asm__ ("rdi"); \
1631 if (narg >= 6) r6 = (unsigned long)(arg6); \
1632 if (narg >= 5) r5 = (unsigned long)(arg5); \
1633 if (narg >= 4) r4 = (unsigned long)(arg4); \
1634 if (narg >= 3) r3 = (unsigned long)(arg3); \
1635 if (narg >= 2) r2 = (unsigned long)(arg2); \
1636 if (narg >= 1) r1 = (unsigned long)(arg1); \
1637 __asm__ __volatile__ ( \
1638 "syscall\n\t" \
1639 : "=a" (res) \
1640 : "0" (nr), "r" (r1), "r" (r2), "r" (r3), "r" (r4), "r" (r5) \
1641 : "cc", "r11", "cx", "memory"); \
1642 errno = -res; \
1643 res; \
1644 })
1645
1646#endif
1647
1648#ifdef ev_syscall
1649 #define ev_syscall0(nr) ev_syscall (nr, 0, 0, 0, 0, 0, 0, 0)
1650 #define ev_syscall1(nr,arg1) ev_syscall (nr, 1, arg1, 0, 0, 0, 0, 0)
1651 #define ev_syscall2(nr,arg1,arg2) ev_syscall (nr, 2, arg1, arg2, 0, 0, 0, 0)
1652 #define ev_syscall3(nr,arg1,arg2,arg3) ev_syscall (nr, 3, arg1, arg2, arg3, 0, 0, 0)
1653 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) ev_syscall (nr, 3, arg1, arg2, arg3, arg4, 0, 0)
1654 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) ev_syscall (nr, 5, arg1, arg2, arg3, arg4, arg5, 0)
1655 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) ev_syscall (nr, 6, arg1, arg2, arg3, arg4, arg5,arg6)
1656#else
1657 #define ev_syscall0(nr) syscall (nr)
1658 #define ev_syscall1(nr,arg1) syscall (nr, arg1)
1659 #define ev_syscall2(nr,arg1,arg2) syscall (nr, arg1, arg2)
1660 #define ev_syscall3(nr,arg1,arg2,arg3) syscall (nr, arg1, arg2, arg3)
1661 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) syscall (nr, arg1, arg2, arg3, arg4)
1662 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) syscall (nr, arg1, arg2, arg3, arg4, arg5)
1663 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) syscall (nr, arg1, arg2, arg3, arg4, arg5,arg6)
1664#endif
1665
1666#endif
1667
1668/*****************************************************************************/
452 1669
453#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1670#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
454 1671
455#if EV_MINPRI == EV_MAXPRI 1672#if EV_MINPRI == EV_MAXPRI
456# define ABSPRI(w) (((W)w), 0) 1673# define ABSPRI(w) (((W)w), 0)
457#else 1674#else
458# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1675# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
459#endif 1676#endif
460 1677
461#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1678#define EMPTY /* required for microsofts broken pseudo-c compiler */
462#define EMPTY2(a,b) /* used to suppress some warnings */
463 1679
464typedef ev_watcher *W; 1680typedef ev_watcher *W;
465typedef ev_watcher_list *WL; 1681typedef ev_watcher_list *WL;
466typedef ev_watcher_time *WT; 1682typedef ev_watcher_time *WT;
467 1683
468#define ev_active(w) ((W)(w))->active 1684#define ev_active(w) ((W)(w))->active
469#define ev_at(w) ((WT)(w))->at 1685#define ev_at(w) ((WT)(w))->at
470 1686
471#if EV_USE_REALTIME 1687#if EV_USE_REALTIME
472/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 1688/* sig_atomic_t is used to avoid per-thread variables or locking but still */
473/* giving it a reasonably high chance of working on typical architetcures */ 1689/* giving it a reasonably high chance of working on typical architectures */
474static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 1690static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
475#endif 1691#endif
476 1692
477#if EV_USE_MONOTONIC 1693#if EV_USE_MONOTONIC
478static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 1694static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
479#endif 1695#endif
480 1696
1697#ifndef EV_FD_TO_WIN32_HANDLE
1698# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
1699#endif
1700#ifndef EV_WIN32_HANDLE_TO_FD
1701# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
1702#endif
1703#ifndef EV_WIN32_CLOSE_FD
1704# define EV_WIN32_CLOSE_FD(fd) close (fd)
1705#endif
1706
481#ifdef _WIN32 1707#ifdef _WIN32
482# include "ev_win32.c" 1708# include "ev_win32.c"
483#endif 1709#endif
484 1710
485/*****************************************************************************/ 1711/*****************************************************************************/
486 1712
1713#if EV_USE_LINUXAIO
1714# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
1715#endif
1716
1717/* define a suitable floor function (only used by periodics atm) */
1718
1719#if EV_USE_FLOOR
1720# include <math.h>
1721# define ev_floor(v) floor (v)
1722#else
1723
1724#include <float.h>
1725
1726/* a floor() replacement function, should be independent of ev_tstamp type */
1727ecb_noinline
1728static ev_tstamp
1729ev_floor (ev_tstamp v)
1730{
1731 /* the choice of shift factor is not terribly important */
1732#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1733 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1734#else
1735 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1736#endif
1737
1738 /* special treatment for negative arguments */
1739 if (ecb_expect_false (v < 0.))
1740 {
1741 ev_tstamp f = -ev_floor (-v);
1742
1743 return f - (f == v ? 0 : 1);
1744 }
1745
1746 /* argument too large for an unsigned long? then reduce it */
1747 if (ecb_expect_false (v >= shift))
1748 {
1749 ev_tstamp f;
1750
1751 if (v == v - 1.)
1752 return v; /* very large numbers are assumed to be integer */
1753
1754 f = shift * ev_floor (v * (1. / shift));
1755 return f + ev_floor (v - f);
1756 }
1757
1758 /* fits into an unsigned long */
1759 return (unsigned long)v;
1760}
1761
1762#endif
1763
1764/*****************************************************************************/
1765
1766#ifdef __linux
1767# include <sys/utsname.h>
1768#endif
1769
1770ecb_noinline ecb_cold
1771static unsigned int
1772ev_linux_version (void)
1773{
1774#ifdef __linux
1775 unsigned int v = 0;
1776 struct utsname buf;
1777 int i;
1778 char *p = buf.release;
1779
1780 if (uname (&buf))
1781 return 0;
1782
1783 for (i = 3+1; --i; )
1784 {
1785 unsigned int c = 0;
1786
1787 for (;;)
1788 {
1789 if (*p >= '0' && *p <= '9')
1790 c = c * 10 + *p++ - '0';
1791 else
1792 {
1793 p += *p == '.';
1794 break;
1795 }
1796 }
1797
1798 v = (v << 8) | c;
1799 }
1800
1801 return v;
1802#else
1803 return 0;
1804#endif
1805}
1806
1807/*****************************************************************************/
1808
1809#if EV_AVOID_STDIO
1810ecb_noinline ecb_cold
1811static void
1812ev_printerr (const char *msg)
1813{
1814 write (STDERR_FILENO, msg, strlen (msg));
1815}
1816#endif
1817
487static void (*syserr_cb)(const char *msg); 1818static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
488 1819
1820ecb_cold
489void 1821void
490ev_set_syserr_cb (void (*cb)(const char *msg)) 1822ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
491{ 1823{
492 syserr_cb = cb; 1824 syserr_cb = cb;
493} 1825}
494 1826
495static void noinline 1827ecb_noinline ecb_cold
1828static void
496ev_syserr (const char *msg) 1829ev_syserr (const char *msg)
497{ 1830{
498 if (!msg) 1831 if (!msg)
499 msg = "(libev) system error"; 1832 msg = "(libev) system error";
500 1833
501 if (syserr_cb) 1834 if (syserr_cb)
502 syserr_cb (msg); 1835 syserr_cb (msg);
503 else 1836 else
504 { 1837 {
1838#if EV_AVOID_STDIO
1839 ev_printerr (msg);
1840 ev_printerr (": ");
1841 ev_printerr (strerror (errno));
1842 ev_printerr ("\n");
1843#else
505 perror (msg); 1844 perror (msg);
1845#endif
506 abort (); 1846 abort ();
507 } 1847 }
508} 1848}
509 1849
510static void * 1850static void *
511ev_realloc_emul (void *ptr, long size) 1851ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
512{ 1852{
513 /* some systems, notably openbsd and darwin, fail to properly 1853 /* some systems, notably openbsd and darwin, fail to properly
514 * implement realloc (x, 0) (as required by both ansi c-98 and 1854 * implement realloc (x, 0) (as required by both ansi c-89 and
515 * the single unix specification, so work around them here. 1855 * the single unix specification, so work around them here.
1856 * recently, also (at least) fedora and debian started breaking it,
1857 * despite documenting it otherwise.
516 */ 1858 */
517 1859
518 if (size) 1860 if (size)
519 return realloc (ptr, size); 1861 return realloc (ptr, size);
520 1862
521 free (ptr); 1863 free (ptr);
522 return 0; 1864 return 0;
523} 1865}
524 1866
525static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1867static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
526 1868
1869ecb_cold
527void 1870void
528ev_set_allocator (void *(*cb)(void *ptr, long size)) 1871ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
529{ 1872{
530 alloc = cb; 1873 alloc = cb;
531} 1874}
532 1875
533inline_speed void * 1876inline_speed void *
… …
535{ 1878{
536 ptr = alloc (ptr, size); 1879 ptr = alloc (ptr, size);
537 1880
538 if (!ptr && size) 1881 if (!ptr && size)
539 { 1882 {
1883#if EV_AVOID_STDIO
1884 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1885#else
540 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1886 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1887#endif
541 abort (); 1888 abort ();
542 } 1889 }
543 1890
544 return ptr; 1891 return ptr;
545} 1892}
… …
556typedef struct 1903typedef struct
557{ 1904{
558 WL head; 1905 WL head;
559 unsigned char events; /* the events watched for */ 1906 unsigned char events; /* the events watched for */
560 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */ 1907 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
561 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1908 unsigned char emask; /* some backends store the actual kernel mask in here */
562 unsigned char unused; 1909 unsigned char eflags; /* flags field for use by backends */
563#if EV_USE_EPOLL 1910#if EV_USE_EPOLL
564 unsigned int egen; /* generation counter to counter epoll bugs */ 1911 unsigned int egen; /* generation counter to counter epoll bugs */
565#endif 1912#endif
566#if EV_SELECT_IS_WINSOCKET 1913#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
567 SOCKET handle; 1914 SOCKET handle;
1915#endif
1916#if EV_USE_IOCP
1917 OVERLAPPED or, ow;
568#endif 1918#endif
569} ANFD; 1919} ANFD;
570 1920
571/* stores the pending event set for a given watcher */ 1921/* stores the pending event set for a given watcher */
572typedef struct 1922typedef struct
… …
614 #undef VAR 1964 #undef VAR
615 }; 1965 };
616 #include "ev_wrap.h" 1966 #include "ev_wrap.h"
617 1967
618 static struct ev_loop default_loop_struct; 1968 static struct ev_loop default_loop_struct;
619 struct ev_loop *ev_default_loop_ptr; 1969 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
620 1970
621#else 1971#else
622 1972
623 ev_tstamp ev_rt_now; 1973 EV_API_DECL ev_tstamp ev_rt_now = EV_TS_CONST (0.); /* needs to be initialised to make it a definition despite extern */
624 #define VAR(name,decl) static decl; 1974 #define VAR(name,decl) static decl;
625 #include "ev_vars.h" 1975 #include "ev_vars.h"
626 #undef VAR 1976 #undef VAR
627 1977
628 static int ev_default_loop_ptr; 1978 static int ev_default_loop_ptr;
629 1979
630#endif 1980#endif
631 1981
632#if EV_MINIMAL < 2 1982#if EV_FEATURE_API
633# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 1983# define EV_RELEASE_CB if (ecb_expect_false (release_cb)) release_cb (EV_A)
634# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 1984# define EV_ACQUIRE_CB if (ecb_expect_false (acquire_cb)) acquire_cb (EV_A)
635# define EV_INVOKE_PENDING invoke_cb (EV_A) 1985# define EV_INVOKE_PENDING invoke_cb (EV_A)
636#else 1986#else
637# define EV_RELEASE_CB (void)0 1987# define EV_RELEASE_CB (void)0
638# define EV_ACQUIRE_CB (void)0 1988# define EV_ACQUIRE_CB (void)0
639# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1989# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
640#endif 1990#endif
641 1991
642#define EVUNLOOP_RECURSE 0x80 1992#define EVBREAK_RECURSE 0x80
643 1993
644/*****************************************************************************/ 1994/*****************************************************************************/
645 1995
646#ifndef EV_HAVE_EV_TIME 1996#ifndef EV_HAVE_EV_TIME
647ev_tstamp 1997ev_tstamp
648ev_time (void) 1998ev_time (void) EV_NOEXCEPT
649{ 1999{
650#if EV_USE_REALTIME 2000#if EV_USE_REALTIME
651 if (expect_true (have_realtime)) 2001 if (ecb_expect_true (have_realtime))
652 { 2002 {
653 struct timespec ts; 2003 struct timespec ts;
654 clock_gettime (CLOCK_REALTIME, &ts); 2004 clock_gettime (CLOCK_REALTIME, &ts);
655 return ts.tv_sec + ts.tv_nsec * 1e-9; 2005 return EV_TS_GET (ts);
656 } 2006 }
657#endif 2007#endif
658 2008
2009 {
659 struct timeval tv; 2010 struct timeval tv;
660 gettimeofday (&tv, 0); 2011 gettimeofday (&tv, 0);
661 return tv.tv_sec + tv.tv_usec * 1e-6; 2012 return EV_TV_GET (tv);
2013 }
662} 2014}
663#endif 2015#endif
664 2016
665inline_size ev_tstamp 2017inline_size ev_tstamp
666get_clock (void) 2018get_clock (void)
667{ 2019{
668#if EV_USE_MONOTONIC 2020#if EV_USE_MONOTONIC
669 if (expect_true (have_monotonic)) 2021 if (ecb_expect_true (have_monotonic))
670 { 2022 {
671 struct timespec ts; 2023 struct timespec ts;
672 clock_gettime (CLOCK_MONOTONIC, &ts); 2024 clock_gettime (CLOCK_MONOTONIC, &ts);
673 return ts.tv_sec + ts.tv_nsec * 1e-9; 2025 return EV_TS_GET (ts);
674 } 2026 }
675#endif 2027#endif
676 2028
677 return ev_time (); 2029 return ev_time ();
678} 2030}
679 2031
680#if EV_MULTIPLICITY 2032#if EV_MULTIPLICITY
681ev_tstamp 2033ev_tstamp
682ev_now (EV_P) 2034ev_now (EV_P) EV_NOEXCEPT
683{ 2035{
684 return ev_rt_now; 2036 return ev_rt_now;
685} 2037}
686#endif 2038#endif
687 2039
688void 2040void
689ev_sleep (ev_tstamp delay) 2041ev_sleep (ev_tstamp delay) EV_NOEXCEPT
690{ 2042{
691 if (delay > 0.) 2043 if (delay > EV_TS_CONST (0.))
692 { 2044 {
693#if EV_USE_NANOSLEEP 2045#if EV_USE_NANOSLEEP
694 struct timespec ts; 2046 struct timespec ts;
695 2047
696 ts.tv_sec = (time_t)delay; 2048 EV_TS_SET (ts, delay);
697 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
698
699 nanosleep (&ts, 0); 2049 nanosleep (&ts, 0);
700#elif defined(_WIN32) 2050#elif defined _WIN32
2051 /* maybe this should round up, as ms is very low resolution */
2052 /* compared to select (µs) or nanosleep (ns) */
701 Sleep ((unsigned long)(delay * 1e3)); 2053 Sleep ((unsigned long)(EV_TS_TO_MSEC (delay)));
702#else 2054#else
703 struct timeval tv; 2055 struct timeval tv;
704
705 tv.tv_sec = (time_t)delay;
706 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
707 2056
708 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 2057 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
709 /* something not guaranteed by newer posix versions, but guaranteed */ 2058 /* something not guaranteed by newer posix versions, but guaranteed */
710 /* by older ones */ 2059 /* by older ones */
2060 EV_TV_SET (tv, delay);
711 select (0, 0, 0, 0, &tv); 2061 select (0, 0, 0, 0, &tv);
712#endif 2062#endif
713 } 2063 }
714} 2064}
715 2065
716/*****************************************************************************/ 2066/*****************************************************************************/
717 2067
718#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 2068#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
719 2069
720/* find a suitable new size for the given array, */ 2070/* find a suitable new size for the given array, */
721/* hopefully by rounding to a ncie-to-malloc size */ 2071/* hopefully by rounding to a nice-to-malloc size */
722inline_size int 2072inline_size int
723array_nextsize (int elem, int cur, int cnt) 2073array_nextsize (int elem, int cur, int cnt)
724{ 2074{
725 int ncur = cur + 1; 2075 int ncur = cur + 1;
726 2076
727 do 2077 do
728 ncur <<= 1; 2078 ncur <<= 1;
729 while (cnt > ncur); 2079 while (cnt > ncur);
730 2080
731 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 2081 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
732 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 2082 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
733 { 2083 {
734 ncur *= elem; 2084 ncur *= elem;
735 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 2085 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
736 ncur = ncur - sizeof (void *) * 4; 2086 ncur = ncur - sizeof (void *) * 4;
… …
738 } 2088 }
739 2089
740 return ncur; 2090 return ncur;
741} 2091}
742 2092
743static noinline void * 2093ecb_noinline ecb_cold
2094static void *
744array_realloc (int elem, void *base, int *cur, int cnt) 2095array_realloc (int elem, void *base, int *cur, int cnt)
745{ 2096{
746 *cur = array_nextsize (elem, *cur, cnt); 2097 *cur = array_nextsize (elem, *cur, cnt);
747 return ev_realloc (base, elem * *cur); 2098 return ev_realloc (base, elem * *cur);
748} 2099}
749 2100
2101#define array_needsize_noinit(base,offset,count)
2102
750#define array_init_zero(base,count) \ 2103#define array_needsize_zerofill(base,offset,count) \
751 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 2104 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
752 2105
753#define array_needsize(type,base,cur,cnt,init) \ 2106#define array_needsize(type,base,cur,cnt,init) \
754 if (expect_false ((cnt) > (cur))) \ 2107 if (ecb_expect_false ((cnt) > (cur))) \
755 { \ 2108 { \
756 int ocur_ = (cur); \ 2109 ecb_unused int ocur_ = (cur); \
757 (base) = (type *)array_realloc \ 2110 (base) = (type *)array_realloc \
758 (sizeof (type), (base), &(cur), (cnt)); \ 2111 (sizeof (type), (base), &(cur), (cnt)); \
759 init ((base) + (ocur_), (cur) - ocur_); \ 2112 init ((base), ocur_, ((cur) - ocur_)); \
760 } 2113 }
761 2114
762#if 0 2115#if 0
763#define array_slim(type,stem) \ 2116#define array_slim(type,stem) \
764 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2117 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
… …
773 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 2126 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
774 2127
775/*****************************************************************************/ 2128/*****************************************************************************/
776 2129
777/* dummy callback for pending events */ 2130/* dummy callback for pending events */
778static void noinline 2131ecb_noinline
2132static void
779pendingcb (EV_P_ ev_prepare *w, int revents) 2133pendingcb (EV_P_ ev_prepare *w, int revents)
780{ 2134{
781} 2135}
782 2136
783void noinline 2137ecb_noinline
2138void
784ev_feed_event (EV_P_ void *w, int revents) 2139ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
785{ 2140{
786 W w_ = (W)w; 2141 W w_ = (W)w;
787 int pri = ABSPRI (w_); 2142 int pri = ABSPRI (w_);
788 2143
789 if (expect_false (w_->pending)) 2144 if (ecb_expect_false (w_->pending))
790 pendings [pri][w_->pending - 1].events |= revents; 2145 pendings [pri][w_->pending - 1].events |= revents;
791 else 2146 else
792 { 2147 {
793 w_->pending = ++pendingcnt [pri]; 2148 w_->pending = ++pendingcnt [pri];
794 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2149 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
795 pendings [pri][w_->pending - 1].w = w_; 2150 pendings [pri][w_->pending - 1].w = w_;
796 pendings [pri][w_->pending - 1].events = revents; 2151 pendings [pri][w_->pending - 1].events = revents;
797 } 2152 }
2153
2154 pendingpri = NUMPRI - 1;
798} 2155}
799 2156
800inline_speed void 2157inline_speed void
801feed_reverse (EV_P_ W w) 2158feed_reverse (EV_P_ W w)
802{ 2159{
803 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2160 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
804 rfeeds [rfeedcnt++] = w; 2161 rfeeds [rfeedcnt++] = w;
805} 2162}
806 2163
807inline_size void 2164inline_size void
808feed_reverse_done (EV_P_ int revents) 2165feed_reverse_done (EV_P_ int revents)
… …
822} 2179}
823 2180
824/*****************************************************************************/ 2181/*****************************************************************************/
825 2182
826inline_speed void 2183inline_speed void
827fd_event_nc (EV_P_ int fd, int revents) 2184fd_event_nocheck (EV_P_ int fd, int revents)
828{ 2185{
829 ANFD *anfd = anfds + fd; 2186 ANFD *anfd = anfds + fd;
830 ev_io *w; 2187 ev_io *w;
831 2188
832 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2189 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
843inline_speed void 2200inline_speed void
844fd_event (EV_P_ int fd, int revents) 2201fd_event (EV_P_ int fd, int revents)
845{ 2202{
846 ANFD *anfd = anfds + fd; 2203 ANFD *anfd = anfds + fd;
847 2204
848 if (expect_true (!anfd->reify)) 2205 if (ecb_expect_true (!anfd->reify))
849 fd_event_nc (EV_A_ fd, revents); 2206 fd_event_nocheck (EV_A_ fd, revents);
850} 2207}
851 2208
852void 2209void
853ev_feed_fd_event (EV_P_ int fd, int revents) 2210ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
854{ 2211{
855 if (fd >= 0 && fd < anfdmax) 2212 if (fd >= 0 && fd < anfdmax)
856 fd_event_nc (EV_A_ fd, revents); 2213 fd_event_nocheck (EV_A_ fd, revents);
857} 2214}
858 2215
859/* make sure the external fd watch events are in-sync */ 2216/* make sure the external fd watch events are in-sync */
860/* with the kernel/libev internal state */ 2217/* with the kernel/libev internal state */
861inline_size void 2218inline_size void
862fd_reify (EV_P) 2219fd_reify (EV_P)
863{ 2220{
864 int i; 2221 int i;
865 2222
2223#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
2224 for (i = 0; i < fdchangecnt; ++i)
2225 {
2226 int fd = fdchanges [i];
2227 ANFD *anfd = anfds + fd;
2228
2229 if (anfd->reify & EV__IOFDSET && anfd->head)
2230 {
2231 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
2232
2233 if (handle != anfd->handle)
2234 {
2235 unsigned long arg;
2236
2237 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
2238
2239 /* handle changed, but fd didn't - we need to do it in two steps */
2240 backend_modify (EV_A_ fd, anfd->events, 0);
2241 anfd->events = 0;
2242 anfd->handle = handle;
2243 }
2244 }
2245 }
2246#endif
2247
866 for (i = 0; i < fdchangecnt; ++i) 2248 for (i = 0; i < fdchangecnt; ++i)
867 { 2249 {
868 int fd = fdchanges [i]; 2250 int fd = fdchanges [i];
869 ANFD *anfd = anfds + fd; 2251 ANFD *anfd = anfds + fd;
870 ev_io *w; 2252 ev_io *w;
871 2253
872 unsigned char events = 0; 2254 unsigned char o_events = anfd->events;
2255 unsigned char o_reify = anfd->reify;
873 2256
874 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2257 anfd->reify = 0;
875 events |= (unsigned char)w->events;
876 2258
877#if EV_SELECT_IS_WINSOCKET 2259 /*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
878 if (events)
879 { 2260 {
880 unsigned long arg; 2261 anfd->events = 0;
881 #ifdef EV_FD_TO_WIN32_HANDLE 2262
882 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 2263 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
883 #else 2264 anfd->events |= (unsigned char)w->events;
884 anfd->handle = _get_osfhandle (fd); 2265
885 #endif 2266 if (o_events != anfd->events)
886 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 2267 o_reify = EV__IOFDSET; /* actually |= */
887 } 2268 }
888#endif
889 2269
890 { 2270 if (o_reify & EV__IOFDSET)
891 unsigned char o_events = anfd->events;
892 unsigned char o_reify = anfd->reify;
893
894 anfd->reify = 0;
895 anfd->events = events;
896
897 if (o_events != events || o_reify & EV__IOFDSET)
898 backend_modify (EV_A_ fd, o_events, events); 2271 backend_modify (EV_A_ fd, o_events, anfd->events);
899 }
900 } 2272 }
901 2273
902 fdchangecnt = 0; 2274 fdchangecnt = 0;
903} 2275}
904 2276
905/* something about the given fd changed */ 2277/* something about the given fd changed */
906inline_size void 2278inline_size
2279void
907fd_change (EV_P_ int fd, int flags) 2280fd_change (EV_P_ int fd, int flags)
908{ 2281{
909 unsigned char reify = anfds [fd].reify; 2282 unsigned char reify = anfds [fd].reify;
910 anfds [fd].reify |= flags; 2283 anfds [fd].reify |= flags;
911 2284
912 if (expect_true (!reify)) 2285 if (ecb_expect_true (!reify))
913 { 2286 {
914 ++fdchangecnt; 2287 ++fdchangecnt;
915 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2288 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
916 fdchanges [fdchangecnt - 1] = fd; 2289 fdchanges [fdchangecnt - 1] = fd;
917 } 2290 }
918} 2291}
919 2292
920/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2293/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
921inline_speed void 2294inline_speed ecb_cold void
922fd_kill (EV_P_ int fd) 2295fd_kill (EV_P_ int fd)
923{ 2296{
924 ev_io *w; 2297 ev_io *w;
925 2298
926 while ((w = (ev_io *)anfds [fd].head)) 2299 while ((w = (ev_io *)anfds [fd].head))
… …
928 ev_io_stop (EV_A_ w); 2301 ev_io_stop (EV_A_ w);
929 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2302 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
930 } 2303 }
931} 2304}
932 2305
933/* check whether the given fd is atcually valid, for error recovery */ 2306/* check whether the given fd is actually valid, for error recovery */
934inline_size int 2307inline_size ecb_cold int
935fd_valid (int fd) 2308fd_valid (int fd)
936{ 2309{
937#ifdef _WIN32 2310#ifdef _WIN32
938 return _get_osfhandle (fd) != -1; 2311 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
939#else 2312#else
940 return fcntl (fd, F_GETFD) != -1; 2313 return fcntl (fd, F_GETFD) != -1;
941#endif 2314#endif
942} 2315}
943 2316
944/* called on EBADF to verify fds */ 2317/* called on EBADF to verify fds */
945static void noinline 2318ecb_noinline ecb_cold
2319static void
946fd_ebadf (EV_P) 2320fd_ebadf (EV_P)
947{ 2321{
948 int fd; 2322 int fd;
949 2323
950 for (fd = 0; fd < anfdmax; ++fd) 2324 for (fd = 0; fd < anfdmax; ++fd)
… …
952 if (!fd_valid (fd) && errno == EBADF) 2326 if (!fd_valid (fd) && errno == EBADF)
953 fd_kill (EV_A_ fd); 2327 fd_kill (EV_A_ fd);
954} 2328}
955 2329
956/* called on ENOMEM in select/poll to kill some fds and retry */ 2330/* called on ENOMEM in select/poll to kill some fds and retry */
957static void noinline 2331ecb_noinline ecb_cold
2332static void
958fd_enomem (EV_P) 2333fd_enomem (EV_P)
959{ 2334{
960 int fd; 2335 int fd;
961 2336
962 for (fd = anfdmax; fd--; ) 2337 for (fd = anfdmax; fd--; )
… …
966 break; 2341 break;
967 } 2342 }
968} 2343}
969 2344
970/* usually called after fork if backend needs to re-arm all fds from scratch */ 2345/* usually called after fork if backend needs to re-arm all fds from scratch */
971static void noinline 2346ecb_noinline
2347static void
972fd_rearm_all (EV_P) 2348fd_rearm_all (EV_P)
973{ 2349{
974 int fd; 2350 int fd;
975 2351
976 for (fd = 0; fd < anfdmax; ++fd) 2352 for (fd = 0; fd < anfdmax; ++fd)
… …
980 anfds [fd].emask = 0; 2356 anfds [fd].emask = 0;
981 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); 2357 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
982 } 2358 }
983} 2359}
984 2360
2361/* used to prepare libev internal fd's */
2362/* this is not fork-safe */
2363inline_speed void
2364fd_intern (int fd)
2365{
2366#ifdef _WIN32
2367 unsigned long arg = 1;
2368 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
2369#else
2370 fcntl (fd, F_SETFD, FD_CLOEXEC);
2371 fcntl (fd, F_SETFL, O_NONBLOCK);
2372#endif
2373}
2374
985/*****************************************************************************/ 2375/*****************************************************************************/
986 2376
987/* 2377/*
988 * the heap functions want a real array index. array index 0 uis guaranteed to not 2378 * the heap functions want a real array index. array index 0 is guaranteed to not
989 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 2379 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
990 * the branching factor of the d-tree. 2380 * the branching factor of the d-tree.
991 */ 2381 */
992 2382
993/* 2383/*
… …
1015 ev_tstamp minat; 2405 ev_tstamp minat;
1016 ANHE *minpos; 2406 ANHE *minpos;
1017 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; 2407 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
1018 2408
1019 /* find minimum child */ 2409 /* find minimum child */
1020 if (expect_true (pos + DHEAP - 1 < E)) 2410 if (ecb_expect_true (pos + DHEAP - 1 < E))
1021 { 2411 {
1022 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2412 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1023 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2413 if ( minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1024 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2414 if ( minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1025 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2415 if ( minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1026 } 2416 }
1027 else if (pos < E) 2417 else if (pos < E)
1028 { 2418 {
1029 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2419 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1030 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2420 if (pos + 1 < E && minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1031 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2421 if (pos + 2 < E && minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1032 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2422 if (pos + 3 < E && minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1033 } 2423 }
1034 else 2424 else
1035 break; 2425 break;
1036 2426
1037 if (ANHE_at (he) <= minat) 2427 if (ANHE_at (he) <= minat)
… …
1045 2435
1046 heap [k] = he; 2436 heap [k] = he;
1047 ev_active (ANHE_w (he)) = k; 2437 ev_active (ANHE_w (he)) = k;
1048} 2438}
1049 2439
1050#else /* 4HEAP */ 2440#else /* not 4HEAP */
1051 2441
1052#define HEAP0 1 2442#define HEAP0 1
1053#define HPARENT(k) ((k) >> 1) 2443#define HPARENT(k) ((k) >> 1)
1054#define UPHEAP_DONE(p,k) (!(p)) 2444#define UPHEAP_DONE(p,k) (!(p))
1055 2445
… …
1141 2531
1142static ANSIG signals [EV_NSIG - 1]; 2532static ANSIG signals [EV_NSIG - 1];
1143 2533
1144/*****************************************************************************/ 2534/*****************************************************************************/
1145 2535
1146/* used to prepare libev internal fd's */ 2536#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1147/* this is not fork-safe */ 2537
2538ecb_noinline ecb_cold
2539static void
2540evpipe_init (EV_P)
2541{
2542 if (!ev_is_active (&pipe_w))
2543 {
2544 int fds [2];
2545
2546# if EV_USE_EVENTFD
2547 fds [0] = -1;
2548 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
2549 if (fds [1] < 0 && errno == EINVAL)
2550 fds [1] = eventfd (0, 0);
2551
2552 if (fds [1] < 0)
2553# endif
2554 {
2555 while (pipe (fds))
2556 ev_syserr ("(libev) error creating signal/async pipe");
2557
2558 fd_intern (fds [0]);
2559 }
2560
2561 evpipe [0] = fds [0];
2562
2563 if (evpipe [1] < 0)
2564 evpipe [1] = fds [1]; /* first call, set write fd */
2565 else
2566 {
2567 /* on subsequent calls, do not change evpipe [1] */
2568 /* so that evpipe_write can always rely on its value. */
2569 /* this branch does not do anything sensible on windows, */
2570 /* so must not be executed on windows */
2571
2572 dup2 (fds [1], evpipe [1]);
2573 close (fds [1]);
2574 }
2575
2576 fd_intern (evpipe [1]);
2577
2578 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2579 ev_io_start (EV_A_ &pipe_w);
2580 ev_unref (EV_A); /* watcher should not keep loop alive */
2581 }
2582}
2583
1148inline_speed void 2584inline_speed void
1149fd_intern (int fd) 2585evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1150{ 2586{
1151#ifdef _WIN32 2587 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1152 unsigned long arg = 1;
1153 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1154#else
1155 fcntl (fd, F_SETFD, FD_CLOEXEC);
1156 fcntl (fd, F_SETFL, O_NONBLOCK);
1157#endif
1158}
1159 2588
1160static void noinline 2589 if (ecb_expect_true (*flag))
1161evpipe_init (EV_P) 2590 return;
1162{ 2591
1163 if (!ev_is_active (&pipe_w)) 2592 *flag = 1;
2593 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2594
2595 pipe_write_skipped = 1;
2596
2597 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2598
2599 if (pipe_write_wanted)
1164 { 2600 {
2601 int old_errno;
2602
2603 pipe_write_skipped = 0;
2604 ECB_MEMORY_FENCE_RELEASE;
2605
2606 old_errno = errno; /* save errno because write will clobber it */
2607
1165#if EV_USE_EVENTFD 2608#if EV_USE_EVENTFD
1166 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2609 if (evpipe [0] < 0)
1167 if (evfd < 0 && errno == EINVAL)
1168 evfd = eventfd (0, 0);
1169
1170 if (evfd >= 0)
1171 { 2610 {
1172 evpipe [0] = -1; 2611 uint64_t counter = 1;
1173 fd_intern (evfd); /* doing it twice doesn't hurt */ 2612 write (evpipe [1], &counter, sizeof (uint64_t));
1174 ev_io_set (&pipe_w, evfd, EV_READ);
1175 } 2613 }
1176 else 2614 else
1177#endif 2615#endif
1178 { 2616 {
1179 while (pipe (evpipe)) 2617#ifdef _WIN32
1180 ev_syserr ("(libev) error creating signal/async pipe"); 2618 WSABUF buf;
1181 2619 DWORD sent;
1182 fd_intern (evpipe [0]); 2620 buf.buf = (char *)&buf;
1183 fd_intern (evpipe [1]); 2621 buf.len = 1;
1184 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2622 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2623#else
2624 write (evpipe [1], &(evpipe [1]), 1);
2625#endif
1185 } 2626 }
1186
1187 ev_io_start (EV_A_ &pipe_w);
1188 ev_unref (EV_A); /* watcher should not keep loop alive */
1189 }
1190}
1191
1192inline_size void
1193evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1194{
1195 if (!*flag)
1196 {
1197 int old_errno = errno; /* save errno because write might clobber it */
1198
1199 *flag = 1;
1200
1201#if EV_USE_EVENTFD
1202 if (evfd >= 0)
1203 {
1204 uint64_t counter = 1;
1205 write (evfd, &counter, sizeof (uint64_t));
1206 }
1207 else
1208#endif
1209 write (evpipe [1], &old_errno, 1);
1210 2627
1211 errno = old_errno; 2628 errno = old_errno;
1212 } 2629 }
1213} 2630}
1214 2631
… …
1217static void 2634static void
1218pipecb (EV_P_ ev_io *iow, int revents) 2635pipecb (EV_P_ ev_io *iow, int revents)
1219{ 2636{
1220 int i; 2637 int i;
1221 2638
2639 if (revents & EV_READ)
2640 {
1222#if EV_USE_EVENTFD 2641#if EV_USE_EVENTFD
1223 if (evfd >= 0) 2642 if (evpipe [0] < 0)
1224 { 2643 {
1225 uint64_t counter; 2644 uint64_t counter;
1226 read (evfd, &counter, sizeof (uint64_t)); 2645 read (evpipe [1], &counter, sizeof (uint64_t));
1227 } 2646 }
1228 else 2647 else
1229#endif 2648#endif
1230 { 2649 {
1231 char dummy; 2650 char dummy[4];
2651#ifdef _WIN32
2652 WSABUF buf;
2653 DWORD recvd;
2654 DWORD flags = 0;
2655 buf.buf = dummy;
2656 buf.len = sizeof (dummy);
2657 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2658#else
1232 read (evpipe [0], &dummy, 1); 2659 read (evpipe [0], &dummy, sizeof (dummy));
2660#endif
2661 }
1233 } 2662 }
1234 2663
2664 pipe_write_skipped = 0;
2665
2666 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2667
2668#if EV_SIGNAL_ENABLE
1235 if (sig_pending) 2669 if (sig_pending)
1236 { 2670 {
1237 sig_pending = 0; 2671 sig_pending = 0;
1238 2672
2673 ECB_MEMORY_FENCE;
2674
1239 for (i = EV_NSIG - 1; i--; ) 2675 for (i = EV_NSIG - 1; i--; )
1240 if (expect_false (signals [i].pending)) 2676 if (ecb_expect_false (signals [i].pending))
1241 ev_feed_signal_event (EV_A_ i + 1); 2677 ev_feed_signal_event (EV_A_ i + 1);
1242 } 2678 }
2679#endif
1243 2680
1244#if EV_ASYNC_ENABLE 2681#if EV_ASYNC_ENABLE
1245 if (async_pending) 2682 if (async_pending)
1246 { 2683 {
1247 async_pending = 0; 2684 async_pending = 0;
2685
2686 ECB_MEMORY_FENCE;
1248 2687
1249 for (i = asynccnt; i--; ) 2688 for (i = asynccnt; i--; )
1250 if (asyncs [i]->sent) 2689 if (asyncs [i]->sent)
1251 { 2690 {
1252 asyncs [i]->sent = 0; 2691 asyncs [i]->sent = 0;
2692 ECB_MEMORY_FENCE_RELEASE;
1253 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2693 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1254 } 2694 }
1255 } 2695 }
1256#endif 2696#endif
1257} 2697}
1258 2698
1259/*****************************************************************************/ 2699/*****************************************************************************/
1260 2700
2701void
2702ev_feed_signal (int signum) EV_NOEXCEPT
2703{
2704#if EV_MULTIPLICITY
2705 EV_P;
2706 ECB_MEMORY_FENCE_ACQUIRE;
2707 EV_A = signals [signum - 1].loop;
2708
2709 if (!EV_A)
2710 return;
2711#endif
2712
2713 signals [signum - 1].pending = 1;
2714 evpipe_write (EV_A_ &sig_pending);
2715}
2716
1261static void 2717static void
1262ev_sighandler (int signum) 2718ev_sighandler (int signum)
1263{ 2719{
1264#if EV_MULTIPLICITY
1265 EV_P = signals [signum - 1].loop;
1266#endif
1267
1268#if _WIN32 2720#ifdef _WIN32
1269 signal (signum, ev_sighandler); 2721 signal (signum, ev_sighandler);
1270#endif 2722#endif
1271 2723
1272 signals [signum - 1].pending = 1; 2724 ev_feed_signal (signum);
1273 evpipe_write (EV_A_ &sig_pending);
1274} 2725}
1275 2726
1276void noinline 2727ecb_noinline
2728void
1277ev_feed_signal_event (EV_P_ int signum) 2729ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
1278{ 2730{
1279 WL w; 2731 WL w;
1280 2732
1281 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2733 if (ecb_expect_false (signum <= 0 || signum >= EV_NSIG))
1282 return; 2734 return;
1283 2735
1284 --signum; 2736 --signum;
1285 2737
1286#if EV_MULTIPLICITY 2738#if EV_MULTIPLICITY
1287 /* it is permissible to try to feed a signal to the wrong loop */ 2739 /* it is permissible to try to feed a signal to the wrong loop */
1288 /* or, likely more useful, feeding a signal nobody is waiting for */ 2740 /* or, likely more useful, feeding a signal nobody is waiting for */
1289 2741
1290 if (expect_false (signals [signum].loop != EV_A)) 2742 if (ecb_expect_false (signals [signum].loop != EV_A))
1291 return; 2743 return;
1292#endif 2744#endif
1293 2745
1294 signals [signum].pending = 0; 2746 signals [signum].pending = 0;
2747 ECB_MEMORY_FENCE_RELEASE;
1295 2748
1296 for (w = signals [signum].head; w; w = w->next) 2749 for (w = signals [signum].head; w; w = w->next)
1297 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2750 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1298} 2751}
1299 2752
… …
1315 break; 2768 break;
1316 } 2769 }
1317} 2770}
1318#endif 2771#endif
1319 2772
2773#endif
2774
1320/*****************************************************************************/ 2775/*****************************************************************************/
1321 2776
2777#if EV_CHILD_ENABLE
1322static WL childs [EV_PID_HASHSIZE]; 2778static WL childs [EV_PID_HASHSIZE];
1323
1324#ifndef _WIN32
1325 2779
1326static ev_signal childev; 2780static ev_signal childev;
1327 2781
1328#ifndef WIFCONTINUED 2782#ifndef WIFCONTINUED
1329# define WIFCONTINUED(status) 0 2783# define WIFCONTINUED(status) 0
… …
1334child_reap (EV_P_ int chain, int pid, int status) 2788child_reap (EV_P_ int chain, int pid, int status)
1335{ 2789{
1336 ev_child *w; 2790 ev_child *w;
1337 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2791 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1338 2792
1339 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2793 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1340 { 2794 {
1341 if ((w->pid == pid || !w->pid) 2795 if ((w->pid == pid || !w->pid)
1342 && (!traced || (w->flags & 1))) 2796 && (!traced || (w->flags & 1)))
1343 { 2797 {
1344 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2798 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1369 /* make sure we are called again until all children have been reaped */ 2823 /* make sure we are called again until all children have been reaped */
1370 /* we need to do it this way so that the callback gets called before we continue */ 2824 /* we need to do it this way so that the callback gets called before we continue */
1371 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2825 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1372 2826
1373 child_reap (EV_A_ pid, pid, status); 2827 child_reap (EV_A_ pid, pid, status);
1374 if (EV_PID_HASHSIZE > 1) 2828 if ((EV_PID_HASHSIZE) > 1)
1375 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2829 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1376} 2830}
1377 2831
1378#endif 2832#endif
1379 2833
1380/*****************************************************************************/ 2834/*****************************************************************************/
1381 2835
2836#if EV_USE_IOCP
2837# include "ev_iocp.c"
2838#endif
1382#if EV_USE_PORT 2839#if EV_USE_PORT
1383# include "ev_port.c" 2840# include "ev_port.c"
1384#endif 2841#endif
1385#if EV_USE_KQUEUE 2842#if EV_USE_KQUEUE
1386# include "ev_kqueue.c" 2843# include "ev_kqueue.c"
1387#endif 2844#endif
1388#if EV_USE_EPOLL 2845#if EV_USE_EPOLL
1389# include "ev_epoll.c" 2846# include "ev_epoll.c"
1390#endif 2847#endif
2848#if EV_USE_LINUXAIO
2849# include "ev_linuxaio.c"
2850#endif
2851#if EV_USE_IOURING
2852# include "ev_iouring.c"
2853#endif
1391#if EV_USE_POLL 2854#if EV_USE_POLL
1392# include "ev_poll.c" 2855# include "ev_poll.c"
1393#endif 2856#endif
1394#if EV_USE_SELECT 2857#if EV_USE_SELECT
1395# include "ev_select.c" 2858# include "ev_select.c"
1396#endif 2859#endif
1397 2860
1398int 2861ecb_cold int
1399ev_version_major (void) 2862ev_version_major (void) EV_NOEXCEPT
1400{ 2863{
1401 return EV_VERSION_MAJOR; 2864 return EV_VERSION_MAJOR;
1402} 2865}
1403 2866
1404int 2867ecb_cold int
1405ev_version_minor (void) 2868ev_version_minor (void) EV_NOEXCEPT
1406{ 2869{
1407 return EV_VERSION_MINOR; 2870 return EV_VERSION_MINOR;
1408} 2871}
1409 2872
1410/* return true if we are running with elevated privileges and should ignore env variables */ 2873/* return true if we are running with elevated privileges and should ignore env variables */
1411int inline_size 2874inline_size ecb_cold int
1412enable_secure (void) 2875enable_secure (void)
1413{ 2876{
1414#ifdef _WIN32 2877#ifdef _WIN32
1415 return 0; 2878 return 0;
1416#else 2879#else
1417 return getuid () != geteuid () 2880 return getuid () != geteuid ()
1418 || getgid () != getegid (); 2881 || getgid () != getegid ();
1419#endif 2882#endif
1420} 2883}
1421 2884
2885ecb_cold
1422unsigned int 2886unsigned int
1423ev_supported_backends (void) 2887ev_supported_backends (void) EV_NOEXCEPT
1424{ 2888{
1425 unsigned int flags = 0; 2889 unsigned int flags = 0;
1426 2890
1427 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2891 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1428 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2892 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
1429 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 2893 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2894 if (EV_USE_LINUXAIO) flags |= EVBACKEND_LINUXAIO;
2895 if (EV_USE_IOURING ) flags |= EVBACKEND_IOURING;
1430 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 2896 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
1431 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2897 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
1432 2898
1433 return flags; 2899 return flags;
1434} 2900}
1435 2901
2902ecb_cold
1436unsigned int 2903unsigned int
1437ev_recommended_backends (void) 2904ev_recommended_backends (void) EV_NOEXCEPT
1438{ 2905{
1439 unsigned int flags = ev_supported_backends (); 2906 unsigned int flags = ev_supported_backends ();
1440 2907
1441#ifndef __NetBSD__ 2908#ifndef __NetBSD__
1442 /* kqueue is borked on everything but netbsd apparently */ 2909 /* kqueue is borked on everything but netbsd apparently */
… …
1446#ifdef __APPLE__ 2913#ifdef __APPLE__
1447 /* only select works correctly on that "unix-certified" platform */ 2914 /* only select works correctly on that "unix-certified" platform */
1448 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2915 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1449 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 2916 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1450#endif 2917#endif
2918#ifdef __FreeBSD__
2919 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2920#endif
2921
2922 /* TODO: linuxaio is very experimental */
2923#if !EV_RECOMMEND_LINUXAIO
2924 flags &= ~EVBACKEND_LINUXAIO;
2925#endif
2926 /* TODO: linuxaio is super experimental */
2927#if !EV_RECOMMEND_IOURING
2928 flags &= ~EVBACKEND_IOURING;
2929#endif
1451 2930
1452 return flags; 2931 return flags;
1453} 2932}
1454 2933
2934ecb_cold
1455unsigned int 2935unsigned int
1456ev_embeddable_backends (void) 2936ev_embeddable_backends (void) EV_NOEXCEPT
1457{ 2937{
1458 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2938 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1459 2939
1460 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2940 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1461 /* please fix it and tell me how to detect the fix */ 2941 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1462 flags &= ~EVBACKEND_EPOLL; 2942 flags &= ~EVBACKEND_EPOLL;
2943
2944 /* EVBACKEND_LINUXAIO is theoretically embeddable, but suffers from a performance overhead */
2945
2946 /* EVBACKEND_IOURING is practically embeddable, but the current implementation is not
2947 * because our backend_fd is the epoll fd we need as fallback.
2948 * if the kernel ever is fixed, this might change...
2949 */
1463 2950
1464 return flags; 2951 return flags;
1465} 2952}
1466 2953
1467unsigned int 2954unsigned int
1468ev_backend (EV_P) 2955ev_backend (EV_P) EV_NOEXCEPT
1469{ 2956{
1470 return backend; 2957 return backend;
1471} 2958}
1472 2959
1473#if EV_MINIMAL < 2 2960#if EV_FEATURE_API
1474unsigned int 2961unsigned int
1475ev_loop_count (EV_P) 2962ev_iteration (EV_P) EV_NOEXCEPT
1476{ 2963{
1477 return loop_count; 2964 return loop_count;
1478} 2965}
1479 2966
1480unsigned int 2967unsigned int
1481ev_loop_depth (EV_P) 2968ev_depth (EV_P) EV_NOEXCEPT
1482{ 2969{
1483 return loop_depth; 2970 return loop_depth;
1484} 2971}
1485 2972
1486void 2973void
1487ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2974ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1488{ 2975{
1489 io_blocktime = interval; 2976 io_blocktime = interval;
1490} 2977}
1491 2978
1492void 2979void
1493ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2980ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1494{ 2981{
1495 timeout_blocktime = interval; 2982 timeout_blocktime = interval;
1496} 2983}
1497 2984
1498void 2985void
1499ev_set_userdata (EV_P_ void *data) 2986ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
1500{ 2987{
1501 userdata = data; 2988 userdata = data;
1502} 2989}
1503 2990
1504void * 2991void *
1505ev_userdata (EV_P) 2992ev_userdata (EV_P) EV_NOEXCEPT
1506{ 2993{
1507 return userdata; 2994 return userdata;
1508} 2995}
1509 2996
2997void
1510void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2998ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
1511{ 2999{
1512 invoke_cb = invoke_pending_cb; 3000 invoke_cb = invoke_pending_cb;
1513} 3001}
1514 3002
3003void
1515void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 3004ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
1516{ 3005{
1517 release_cb = release; 3006 release_cb = release;
1518 acquire_cb = acquire; 3007 acquire_cb = acquire;
1519} 3008}
1520#endif 3009#endif
1521 3010
1522/* initialise a loop structure, must be zero-initialised */ 3011/* initialise a loop structure, must be zero-initialised */
1523static void noinline 3012ecb_noinline ecb_cold
3013static void
1524loop_init (EV_P_ unsigned int flags) 3014loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
1525{ 3015{
1526 if (!backend) 3016 if (!backend)
1527 { 3017 {
3018 origflags = flags;
3019
1528#if EV_USE_REALTIME 3020#if EV_USE_REALTIME
1529 if (!have_realtime) 3021 if (!have_realtime)
1530 { 3022 {
1531 struct timespec ts; 3023 struct timespec ts;
1532 3024
… …
1554 if (!(flags & EVFLAG_NOENV) 3046 if (!(flags & EVFLAG_NOENV)
1555 && !enable_secure () 3047 && !enable_secure ()
1556 && getenv ("LIBEV_FLAGS")) 3048 && getenv ("LIBEV_FLAGS"))
1557 flags = atoi (getenv ("LIBEV_FLAGS")); 3049 flags = atoi (getenv ("LIBEV_FLAGS"));
1558 3050
1559 ev_rt_now = ev_time (); 3051 ev_rt_now = ev_time ();
1560 mn_now = get_clock (); 3052 mn_now = get_clock ();
1561 now_floor = mn_now; 3053 now_floor = mn_now;
1562 rtmn_diff = ev_rt_now - mn_now; 3054 rtmn_diff = ev_rt_now - mn_now;
1563#if EV_MINIMAL < 2 3055#if EV_FEATURE_API
1564 invoke_cb = ev_invoke_pending; 3056 invoke_cb = ev_invoke_pending;
1565#endif 3057#endif
1566 3058
1567 io_blocktime = 0.; 3059 io_blocktime = 0.;
1568 timeout_blocktime = 0.; 3060 timeout_blocktime = 0.;
1569 backend = 0; 3061 backend = 0;
1570 backend_fd = -1; 3062 backend_fd = -1;
1571 sig_pending = 0; 3063 sig_pending = 0;
1572#if EV_ASYNC_ENABLE 3064#if EV_ASYNC_ENABLE
1573 async_pending = 0; 3065 async_pending = 0;
1574#endif 3066#endif
3067 pipe_write_skipped = 0;
3068 pipe_write_wanted = 0;
3069 evpipe [0] = -1;
3070 evpipe [1] = -1;
1575#if EV_USE_INOTIFY 3071#if EV_USE_INOTIFY
1576 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 3072 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1577#endif 3073#endif
1578#if EV_USE_SIGNALFD 3074#if EV_USE_SIGNALFD
1579 sigfd = flags & EVFLAG_NOSIGFD ? -1 : -2; 3075 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1580#endif 3076#endif
1581 3077
1582 if (!(flags & 0x0000ffffU)) 3078 if (!(flags & EVBACKEND_MASK))
1583 flags |= ev_recommended_backends (); 3079 flags |= ev_recommended_backends ();
1584 3080
3081#if EV_USE_IOCP
3082 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
3083#endif
1585#if EV_USE_PORT 3084#if EV_USE_PORT
1586 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 3085 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1587#endif 3086#endif
1588#if EV_USE_KQUEUE 3087#if EV_USE_KQUEUE
1589 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 3088 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
3089#endif
3090#if EV_USE_IOURING
3091 if (!backend && (flags & EVBACKEND_IOURING )) backend = iouring_init (EV_A_ flags);
3092#endif
3093#if EV_USE_LINUXAIO
3094 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
1590#endif 3095#endif
1591#if EV_USE_EPOLL 3096#if EV_USE_EPOLL
1592 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 3097 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
1593#endif 3098#endif
1594#if EV_USE_POLL 3099#if EV_USE_POLL
1595 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 3100 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
1596#endif 3101#endif
1597#if EV_USE_SELECT 3102#if EV_USE_SELECT
1598 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 3103 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
1599#endif 3104#endif
1600 3105
1601 ev_prepare_init (&pending_w, pendingcb); 3106 ev_prepare_init (&pending_w, pendingcb);
1602 3107
3108#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1603 ev_init (&pipe_w, pipecb); 3109 ev_init (&pipe_w, pipecb);
1604 ev_set_priority (&pipe_w, EV_MAXPRI); 3110 ev_set_priority (&pipe_w, EV_MAXPRI);
3111#endif
1605 } 3112 }
1606} 3113}
1607 3114
1608/* free up a loop structure */ 3115/* free up a loop structure */
1609static void noinline 3116ecb_cold
3117void
1610loop_destroy (EV_P) 3118ev_loop_destroy (EV_P)
1611{ 3119{
1612 int i; 3120 int i;
3121
3122#if EV_MULTIPLICITY
3123 /* mimic free (0) */
3124 if (!EV_A)
3125 return;
3126#endif
3127
3128#if EV_CLEANUP_ENABLE
3129 /* queue cleanup watchers (and execute them) */
3130 if (ecb_expect_false (cleanupcnt))
3131 {
3132 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
3133 EV_INVOKE_PENDING;
3134 }
3135#endif
3136
3137#if EV_CHILD_ENABLE
3138 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
3139 {
3140 ev_ref (EV_A); /* child watcher */
3141 ev_signal_stop (EV_A_ &childev);
3142 }
3143#endif
1613 3144
1614 if (ev_is_active (&pipe_w)) 3145 if (ev_is_active (&pipe_w))
1615 { 3146 {
1616 /*ev_ref (EV_A);*/ 3147 /*ev_ref (EV_A);*/
1617 /*ev_io_stop (EV_A_ &pipe_w);*/ 3148 /*ev_io_stop (EV_A_ &pipe_w);*/
1618 3149
1619#if EV_USE_EVENTFD 3150 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1620 if (evfd >= 0) 3151 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1621 close (evfd);
1622#endif
1623
1624 if (evpipe [0] >= 0)
1625 {
1626 close (evpipe [0]);
1627 close (evpipe [1]);
1628 }
1629 } 3152 }
1630 3153
1631#if EV_USE_SIGNALFD 3154#if EV_USE_SIGNALFD
1632 if (ev_is_active (&sigfd_w)) 3155 if (ev_is_active (&sigfd_w))
1633 {
1634 /*ev_ref (EV_A);*/
1635 /*ev_io_stop (EV_A_ &sigfd_w);*/
1636
1637 close (sigfd); 3156 close (sigfd);
1638 }
1639#endif 3157#endif
1640 3158
1641#if EV_USE_INOTIFY 3159#if EV_USE_INOTIFY
1642 if (fs_fd >= 0) 3160 if (fs_fd >= 0)
1643 close (fs_fd); 3161 close (fs_fd);
1644#endif 3162#endif
1645 3163
1646 if (backend_fd >= 0) 3164 if (backend_fd >= 0)
1647 close (backend_fd); 3165 close (backend_fd);
1648 3166
3167#if EV_USE_IOCP
3168 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
3169#endif
1649#if EV_USE_PORT 3170#if EV_USE_PORT
1650 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3171 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1651#endif 3172#endif
1652#if EV_USE_KQUEUE 3173#if EV_USE_KQUEUE
1653 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3174 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
3175#endif
3176#if EV_USE_IOURING
3177 if (backend == EVBACKEND_IOURING ) iouring_destroy (EV_A);
3178#endif
3179#if EV_USE_LINUXAIO
3180 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
1654#endif 3181#endif
1655#if EV_USE_EPOLL 3182#if EV_USE_EPOLL
1656 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3183 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
1657#endif 3184#endif
1658#if EV_USE_POLL 3185#if EV_USE_POLL
1659 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3186 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
1660#endif 3187#endif
1661#if EV_USE_SELECT 3188#if EV_USE_SELECT
1662 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3189 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
1663#endif 3190#endif
1664 3191
1665 for (i = NUMPRI; i--; ) 3192 for (i = NUMPRI; i--; )
1666 { 3193 {
1667 array_free (pending, [i]); 3194 array_free (pending, [i]);
… …
1680 array_free (periodic, EMPTY); 3207 array_free (periodic, EMPTY);
1681#endif 3208#endif
1682#if EV_FORK_ENABLE 3209#if EV_FORK_ENABLE
1683 array_free (fork, EMPTY); 3210 array_free (fork, EMPTY);
1684#endif 3211#endif
3212#if EV_CLEANUP_ENABLE
3213 array_free (cleanup, EMPTY);
3214#endif
1685 array_free (prepare, EMPTY); 3215 array_free (prepare, EMPTY);
1686 array_free (check, EMPTY); 3216 array_free (check, EMPTY);
1687#if EV_ASYNC_ENABLE 3217#if EV_ASYNC_ENABLE
1688 array_free (async, EMPTY); 3218 array_free (async, EMPTY);
1689#endif 3219#endif
1690 3220
1691 backend = 0; 3221 backend = 0;
3222
3223#if EV_MULTIPLICITY
3224 if (ev_is_default_loop (EV_A))
3225#endif
3226 ev_default_loop_ptr = 0;
3227#if EV_MULTIPLICITY
3228 else
3229 ev_free (EV_A);
3230#endif
1692} 3231}
1693 3232
1694#if EV_USE_INOTIFY 3233#if EV_USE_INOTIFY
1695inline_size void infy_fork (EV_P); 3234inline_size void infy_fork (EV_P);
1696#endif 3235#endif
1697 3236
1698inline_size void 3237inline_size void
1699loop_fork (EV_P) 3238loop_fork (EV_P)
1700{ 3239{
1701#if EV_USE_PORT 3240#if EV_USE_PORT
1702 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3241 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1703#endif 3242#endif
1704#if EV_USE_KQUEUE 3243#if EV_USE_KQUEUE
1705 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 3244 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
3245#endif
3246#if EV_USE_IOURING
3247 if (backend == EVBACKEND_IOURING ) iouring_fork (EV_A);
3248#endif
3249#if EV_USE_LINUXAIO
3250 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
1706#endif 3251#endif
1707#if EV_USE_EPOLL 3252#if EV_USE_EPOLL
1708 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3253 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
1709#endif 3254#endif
1710#if EV_USE_INOTIFY 3255#if EV_USE_INOTIFY
1711 infy_fork (EV_A); 3256 infy_fork (EV_A);
1712#endif 3257#endif
1713 3258
3259#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1714 if (ev_is_active (&pipe_w)) 3260 if (ev_is_active (&pipe_w) && postfork != 2)
1715 { 3261 {
1716 /* this "locks" the handlers against writing to the pipe */ 3262 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1717 /* while we modify the fd vars */
1718 sig_pending = 1;
1719#if EV_ASYNC_ENABLE
1720 async_pending = 1;
1721#endif
1722 3263
1723 ev_ref (EV_A); 3264 ev_ref (EV_A);
1724 ev_io_stop (EV_A_ &pipe_w); 3265 ev_io_stop (EV_A_ &pipe_w);
1725 3266
1726#if EV_USE_EVENTFD
1727 if (evfd >= 0)
1728 close (evfd);
1729#endif
1730
1731 if (evpipe [0] >= 0) 3267 if (evpipe [0] >= 0)
1732 { 3268 EV_WIN32_CLOSE_FD (evpipe [0]);
1733 close (evpipe [0]);
1734 close (evpipe [1]);
1735 }
1736 3269
1737 evpipe_init (EV_A); 3270 evpipe_init (EV_A);
1738 /* now iterate over everything, in case we missed something */ 3271 /* iterate over everything, in case we missed something before */
1739 pipecb (EV_A_ &pipe_w, EV_READ); 3272 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1740 } 3273 }
3274#endif
1741 3275
1742 postfork = 0; 3276 postfork = 0;
1743} 3277}
1744 3278
1745#if EV_MULTIPLICITY 3279#if EV_MULTIPLICITY
1746 3280
3281ecb_cold
1747struct ev_loop * 3282struct ev_loop *
1748ev_loop_new (unsigned int flags) 3283ev_loop_new (unsigned int flags) EV_NOEXCEPT
1749{ 3284{
1750 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3285 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1751 3286
1752 memset (EV_A, 0, sizeof (struct ev_loop)); 3287 memset (EV_A, 0, sizeof (struct ev_loop));
1753 loop_init (EV_A_ flags); 3288 loop_init (EV_A_ flags);
1754 3289
1755 if (ev_backend (EV_A)) 3290 if (ev_backend (EV_A))
1756 return EV_A; 3291 return EV_A;
1757 3292
3293 ev_free (EV_A);
1758 return 0; 3294 return 0;
1759} 3295}
1760 3296
1761void
1762ev_loop_destroy (EV_P)
1763{
1764 loop_destroy (EV_A);
1765 ev_free (loop);
1766}
1767
1768void
1769ev_loop_fork (EV_P)
1770{
1771 postfork = 1; /* must be in line with ev_default_fork */
1772}
1773#endif /* multiplicity */ 3297#endif /* multiplicity */
1774 3298
1775#if EV_VERIFY 3299#if EV_VERIFY
1776static void noinline 3300ecb_noinline ecb_cold
3301static void
1777verify_watcher (EV_P_ W w) 3302verify_watcher (EV_P_ W w)
1778{ 3303{
1779 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3304 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1780 3305
1781 if (w->pending) 3306 if (w->pending)
1782 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3307 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1783} 3308}
1784 3309
1785static void noinline 3310ecb_noinline ecb_cold
3311static void
1786verify_heap (EV_P_ ANHE *heap, int N) 3312verify_heap (EV_P_ ANHE *heap, int N)
1787{ 3313{
1788 int i; 3314 int i;
1789 3315
1790 for (i = HEAP0; i < N + HEAP0; ++i) 3316 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1795 3321
1796 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3322 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1797 } 3323 }
1798} 3324}
1799 3325
1800static void noinline 3326ecb_noinline ecb_cold
3327static void
1801array_verify (EV_P_ W *ws, int cnt) 3328array_verify (EV_P_ W *ws, int cnt)
1802{ 3329{
1803 while (cnt--) 3330 while (cnt--)
1804 { 3331 {
1805 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3332 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1806 verify_watcher (EV_A_ ws [cnt]); 3333 verify_watcher (EV_A_ ws [cnt]);
1807 } 3334 }
1808} 3335}
1809#endif 3336#endif
1810 3337
1811#if EV_MINIMAL < 2 3338#if EV_FEATURE_API
1812void 3339void ecb_cold
1813ev_loop_verify (EV_P) 3340ev_verify (EV_P) EV_NOEXCEPT
1814{ 3341{
1815#if EV_VERIFY 3342#if EV_VERIFY
1816 int i; 3343 int i;
1817 WL w; 3344 WL w, w2;
1818 3345
1819 assert (activecnt >= -1); 3346 assert (activecnt >= -1);
1820 3347
1821 assert (fdchangemax >= fdchangecnt); 3348 assert (fdchangemax >= fdchangecnt);
1822 for (i = 0; i < fdchangecnt; ++i) 3349 for (i = 0; i < fdchangecnt; ++i)
1823 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3350 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1824 3351
1825 assert (anfdmax >= 0); 3352 assert (anfdmax >= 0);
1826 for (i = 0; i < anfdmax; ++i) 3353 for (i = 0; i < anfdmax; ++i)
3354 {
3355 int j = 0;
3356
1827 for (w = anfds [i].head; w; w = w->next) 3357 for (w = w2 = anfds [i].head; w; w = w->next)
1828 { 3358 {
1829 verify_watcher (EV_A_ (W)w); 3359 verify_watcher (EV_A_ (W)w);
3360
3361 if (j++ & 1)
3362 {
3363 assert (("libev: io watcher list contains a loop", w != w2));
3364 w2 = w2->next;
3365 }
3366
1830 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3367 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1831 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 3368 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1832 } 3369 }
3370 }
1833 3371
1834 assert (timermax >= timercnt); 3372 assert (timermax >= timercnt);
1835 verify_heap (EV_A_ timers, timercnt); 3373 verify_heap (EV_A_ timers, timercnt);
1836 3374
1837#if EV_PERIODIC_ENABLE 3375#if EV_PERIODIC_ENABLE
… …
1852#if EV_FORK_ENABLE 3390#if EV_FORK_ENABLE
1853 assert (forkmax >= forkcnt); 3391 assert (forkmax >= forkcnt);
1854 array_verify (EV_A_ (W *)forks, forkcnt); 3392 array_verify (EV_A_ (W *)forks, forkcnt);
1855#endif 3393#endif
1856 3394
3395#if EV_CLEANUP_ENABLE
3396 assert (cleanupmax >= cleanupcnt);
3397 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
3398#endif
3399
1857#if EV_ASYNC_ENABLE 3400#if EV_ASYNC_ENABLE
1858 assert (asyncmax >= asynccnt); 3401 assert (asyncmax >= asynccnt);
1859 array_verify (EV_A_ (W *)asyncs, asynccnt); 3402 array_verify (EV_A_ (W *)asyncs, asynccnt);
1860#endif 3403#endif
1861 3404
3405#if EV_PREPARE_ENABLE
1862 assert (preparemax >= preparecnt); 3406 assert (preparemax >= preparecnt);
1863 array_verify (EV_A_ (W *)prepares, preparecnt); 3407 array_verify (EV_A_ (W *)prepares, preparecnt);
3408#endif
1864 3409
3410#if EV_CHECK_ENABLE
1865 assert (checkmax >= checkcnt); 3411 assert (checkmax >= checkcnt);
1866 array_verify (EV_A_ (W *)checks, checkcnt); 3412 array_verify (EV_A_ (W *)checks, checkcnt);
3413#endif
1867 3414
1868# if 0 3415# if 0
3416#if EV_CHILD_ENABLE
1869 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 3417 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1870 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending) 3418 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
3419#endif
1871# endif 3420# endif
1872#endif 3421#endif
1873} 3422}
1874#endif 3423#endif
1875 3424
1876#if EV_MULTIPLICITY 3425#if EV_MULTIPLICITY
3426ecb_cold
1877struct ev_loop * 3427struct ev_loop *
1878ev_default_loop_init (unsigned int flags)
1879#else 3428#else
1880int 3429int
3430#endif
1881ev_default_loop (unsigned int flags) 3431ev_default_loop (unsigned int flags) EV_NOEXCEPT
1882#endif
1883{ 3432{
1884 if (!ev_default_loop_ptr) 3433 if (!ev_default_loop_ptr)
1885 { 3434 {
1886#if EV_MULTIPLICITY 3435#if EV_MULTIPLICITY
1887 EV_P = ev_default_loop_ptr = &default_loop_struct; 3436 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1891 3440
1892 loop_init (EV_A_ flags); 3441 loop_init (EV_A_ flags);
1893 3442
1894 if (ev_backend (EV_A)) 3443 if (ev_backend (EV_A))
1895 { 3444 {
1896#ifndef _WIN32 3445#if EV_CHILD_ENABLE
1897 ev_signal_init (&childev, childcb, SIGCHLD); 3446 ev_signal_init (&childev, childcb, SIGCHLD);
1898 ev_set_priority (&childev, EV_MAXPRI); 3447 ev_set_priority (&childev, EV_MAXPRI);
1899 ev_signal_start (EV_A_ &childev); 3448 ev_signal_start (EV_A_ &childev);
1900 ev_unref (EV_A); /* child watcher should not keep loop alive */ 3449 ev_unref (EV_A); /* child watcher should not keep loop alive */
1901#endif 3450#endif
… …
1906 3455
1907 return ev_default_loop_ptr; 3456 return ev_default_loop_ptr;
1908} 3457}
1909 3458
1910void 3459void
1911ev_default_destroy (void) 3460ev_loop_fork (EV_P) EV_NOEXCEPT
1912{ 3461{
1913#if EV_MULTIPLICITY 3462 postfork = 1;
1914 EV_P = ev_default_loop_ptr;
1915#endif
1916
1917 ev_default_loop_ptr = 0;
1918
1919#ifndef _WIN32
1920 ev_ref (EV_A); /* child watcher */
1921 ev_signal_stop (EV_A_ &childev);
1922#endif
1923
1924 loop_destroy (EV_A);
1925}
1926
1927void
1928ev_default_fork (void)
1929{
1930#if EV_MULTIPLICITY
1931 EV_P = ev_default_loop_ptr;
1932#endif
1933
1934 postfork = 1; /* must be in line with ev_loop_fork */
1935} 3463}
1936 3464
1937/*****************************************************************************/ 3465/*****************************************************************************/
1938 3466
1939void 3467void
… …
1941{ 3469{
1942 EV_CB_INVOKE ((W)w, revents); 3470 EV_CB_INVOKE ((W)w, revents);
1943} 3471}
1944 3472
1945unsigned int 3473unsigned int
1946ev_pending_count (EV_P) 3474ev_pending_count (EV_P) EV_NOEXCEPT
1947{ 3475{
1948 int pri; 3476 int pri;
1949 unsigned int count = 0; 3477 unsigned int count = 0;
1950 3478
1951 for (pri = NUMPRI; pri--; ) 3479 for (pri = NUMPRI; pri--; )
1952 count += pendingcnt [pri]; 3480 count += pendingcnt [pri];
1953 3481
1954 return count; 3482 return count;
1955} 3483}
1956 3484
1957void noinline 3485ecb_noinline
3486void
1958ev_invoke_pending (EV_P) 3487ev_invoke_pending (EV_P)
1959{ 3488{
1960 int pri; 3489 pendingpri = NUMPRI;
1961 3490
1962 for (pri = NUMPRI; pri--; ) 3491 do
3492 {
3493 --pendingpri;
3494
3495 /* pendingpri possibly gets modified in the inner loop */
1963 while (pendingcnt [pri]) 3496 while (pendingcnt [pendingpri])
1964 { 3497 {
1965 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3498 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
1966 3499
1967 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1968 /* ^ this is no longer true, as pending_w could be here */
1969
1970 p->w->pending = 0; 3500 p->w->pending = 0;
1971 EV_CB_INVOKE (p->w, p->events); 3501 EV_CB_INVOKE (p->w, p->events);
1972 EV_FREQUENT_CHECK; 3502 EV_FREQUENT_CHECK;
1973 } 3503 }
3504 }
3505 while (pendingpri);
1974} 3506}
1975 3507
1976#if EV_IDLE_ENABLE 3508#if EV_IDLE_ENABLE
1977/* make idle watchers pending. this handles the "call-idle */ 3509/* make idle watchers pending. this handles the "call-idle */
1978/* only when higher priorities are idle" logic */ 3510/* only when higher priorities are idle" logic */
1979inline_size void 3511inline_size void
1980idle_reify (EV_P) 3512idle_reify (EV_P)
1981{ 3513{
1982 if (expect_false (idleall)) 3514 if (ecb_expect_false (idleall))
1983 { 3515 {
1984 int pri; 3516 int pri;
1985 3517
1986 for (pri = NUMPRI; pri--; ) 3518 for (pri = NUMPRI; pri--; )
1987 { 3519 {
… …
2017 { 3549 {
2018 ev_at (w) += w->repeat; 3550 ev_at (w) += w->repeat;
2019 if (ev_at (w) < mn_now) 3551 if (ev_at (w) < mn_now)
2020 ev_at (w) = mn_now; 3552 ev_at (w) = mn_now;
2021 3553
2022 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 3554 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > EV_TS_CONST (0.)));
2023 3555
2024 ANHE_at_cache (timers [HEAP0]); 3556 ANHE_at_cache (timers [HEAP0]);
2025 downheap (timers, timercnt, HEAP0); 3557 downheap (timers, timercnt, HEAP0);
2026 } 3558 }
2027 else 3559 else
… …
2030 EV_FREQUENT_CHECK; 3562 EV_FREQUENT_CHECK;
2031 feed_reverse (EV_A_ (W)w); 3563 feed_reverse (EV_A_ (W)w);
2032 } 3564 }
2033 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 3565 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
2034 3566
2035 feed_reverse_done (EV_A_ EV_TIMEOUT); 3567 feed_reverse_done (EV_A_ EV_TIMER);
2036 } 3568 }
2037} 3569}
2038 3570
2039#if EV_PERIODIC_ENABLE 3571#if EV_PERIODIC_ENABLE
3572
3573ecb_noinline
3574static void
3575periodic_recalc (EV_P_ ev_periodic *w)
3576{
3577 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3578 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3579
3580 /* the above almost always errs on the low side */
3581 while (at <= ev_rt_now)
3582 {
3583 ev_tstamp nat = at + w->interval;
3584
3585 /* when resolution fails us, we use ev_rt_now */
3586 if (ecb_expect_false (nat == at))
3587 {
3588 at = ev_rt_now;
3589 break;
3590 }
3591
3592 at = nat;
3593 }
3594
3595 ev_at (w) = at;
3596}
3597
2040/* make periodics pending */ 3598/* make periodics pending */
2041inline_size void 3599inline_size void
2042periodics_reify (EV_P) 3600periodics_reify (EV_P)
2043{ 3601{
2044 EV_FREQUENT_CHECK; 3602 EV_FREQUENT_CHECK;
2045 3603
2046 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3604 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2047 { 3605 {
2048 int feed_count = 0;
2049
2050 do 3606 do
2051 { 3607 {
2052 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3608 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2053 3609
2054 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3610 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2063 ANHE_at_cache (periodics [HEAP0]); 3619 ANHE_at_cache (periodics [HEAP0]);
2064 downheap (periodics, periodiccnt, HEAP0); 3620 downheap (periodics, periodiccnt, HEAP0);
2065 } 3621 }
2066 else if (w->interval) 3622 else if (w->interval)
2067 { 3623 {
2068 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3624 periodic_recalc (EV_A_ w);
2069 /* if next trigger time is not sufficiently in the future, put it there */
2070 /* this might happen because of floating point inexactness */
2071 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2072 {
2073 ev_at (w) += w->interval;
2074
2075 /* if interval is unreasonably low we might still have a time in the past */
2076 /* so correct this. this will make the periodic very inexact, but the user */
2077 /* has effectively asked to get triggered more often than possible */
2078 if (ev_at (w) < ev_rt_now)
2079 ev_at (w) = ev_rt_now;
2080 }
2081
2082 ANHE_at_cache (periodics [HEAP0]); 3625 ANHE_at_cache (periodics [HEAP0]);
2083 downheap (periodics, periodiccnt, HEAP0); 3626 downheap (periodics, periodiccnt, HEAP0);
2084 } 3627 }
2085 else 3628 else
2086 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3629 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2093 feed_reverse_done (EV_A_ EV_PERIODIC); 3636 feed_reverse_done (EV_A_ EV_PERIODIC);
2094 } 3637 }
2095} 3638}
2096 3639
2097/* simply recalculate all periodics */ 3640/* simply recalculate all periodics */
2098/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 3641/* TODO: maybe ensure that at least one event happens when jumping forward? */
2099static void noinline 3642ecb_noinline ecb_cold
3643static void
2100periodics_reschedule (EV_P) 3644periodics_reschedule (EV_P)
2101{ 3645{
2102 int i; 3646 int i;
2103 3647
2104 /* adjust periodics after time jump */ 3648 /* adjust periodics after time jump */
… …
2107 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3651 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2108 3652
2109 if (w->reschedule_cb) 3653 if (w->reschedule_cb)
2110 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3654 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2111 else if (w->interval) 3655 else if (w->interval)
2112 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3656 periodic_recalc (EV_A_ w);
2113 3657
2114 ANHE_at_cache (periodics [i]); 3658 ANHE_at_cache (periodics [i]);
2115 } 3659 }
2116 3660
2117 reheap (periodics, periodiccnt); 3661 reheap (periodics, periodiccnt);
2118} 3662}
2119#endif 3663#endif
2120 3664
2121/* adjust all timers by a given offset */ 3665/* adjust all timers by a given offset */
2122static void noinline 3666ecb_noinline ecb_cold
3667static void
2123timers_reschedule (EV_P_ ev_tstamp adjust) 3668timers_reschedule (EV_P_ ev_tstamp adjust)
2124{ 3669{
2125 int i; 3670 int i;
2126 3671
2127 for (i = 0; i < timercnt; ++i) 3672 for (i = 0; i < timercnt; ++i)
… …
2131 ANHE_at_cache (*he); 3676 ANHE_at_cache (*he);
2132 } 3677 }
2133} 3678}
2134 3679
2135/* fetch new monotonic and realtime times from the kernel */ 3680/* fetch new monotonic and realtime times from the kernel */
2136/* also detetc if there was a timejump, and act accordingly */ 3681/* also detect if there was a timejump, and act accordingly */
2137inline_speed void 3682inline_speed void
2138time_update (EV_P_ ev_tstamp max_block) 3683time_update (EV_P_ ev_tstamp max_block)
2139{ 3684{
2140#if EV_USE_MONOTONIC 3685#if EV_USE_MONOTONIC
2141 if (expect_true (have_monotonic)) 3686 if (ecb_expect_true (have_monotonic))
2142 { 3687 {
2143 int i; 3688 int i;
2144 ev_tstamp odiff = rtmn_diff; 3689 ev_tstamp odiff = rtmn_diff;
2145 3690
2146 mn_now = get_clock (); 3691 mn_now = get_clock ();
2147 3692
2148 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3693 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
2149 /* interpolate in the meantime */ 3694 /* interpolate in the meantime */
2150 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 3695 if (ecb_expect_true (mn_now - now_floor < EV_TS_CONST (MIN_TIMEJUMP * .5)))
2151 { 3696 {
2152 ev_rt_now = rtmn_diff + mn_now; 3697 ev_rt_now = rtmn_diff + mn_now;
2153 return; 3698 return;
2154 } 3699 }
2155 3700
… …
2164 * doesn't hurt either as we only do this on time-jumps or 3709 * doesn't hurt either as we only do this on time-jumps or
2165 * in the unlikely event of having been preempted here. 3710 * in the unlikely event of having been preempted here.
2166 */ 3711 */
2167 for (i = 4; --i; ) 3712 for (i = 4; --i; )
2168 { 3713 {
3714 ev_tstamp diff;
2169 rtmn_diff = ev_rt_now - mn_now; 3715 rtmn_diff = ev_rt_now - mn_now;
2170 3716
2171 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3717 diff = odiff - rtmn_diff;
3718
3719 if (ecb_expect_true ((diff < EV_TS_CONST (0.) ? -diff : diff) < EV_TS_CONST (MIN_TIMEJUMP)))
2172 return; /* all is well */ 3720 return; /* all is well */
2173 3721
2174 ev_rt_now = ev_time (); 3722 ev_rt_now = ev_time ();
2175 mn_now = get_clock (); 3723 mn_now = get_clock ();
2176 now_floor = mn_now; 3724 now_floor = mn_now;
… …
2185 else 3733 else
2186#endif 3734#endif
2187 { 3735 {
2188 ev_rt_now = ev_time (); 3736 ev_rt_now = ev_time ();
2189 3737
2190 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 3738 if (ecb_expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + EV_TS_CONST (MIN_TIMEJUMP)))
2191 { 3739 {
2192 /* adjust timers. this is easy, as the offset is the same for all of them */ 3740 /* adjust timers. this is easy, as the offset is the same for all of them */
2193 timers_reschedule (EV_A_ ev_rt_now - mn_now); 3741 timers_reschedule (EV_A_ ev_rt_now - mn_now);
2194#if EV_PERIODIC_ENABLE 3742#if EV_PERIODIC_ENABLE
2195 periodics_reschedule (EV_A); 3743 periodics_reschedule (EV_A);
… …
2198 3746
2199 mn_now = ev_rt_now; 3747 mn_now = ev_rt_now;
2200 } 3748 }
2201} 3749}
2202 3750
2203void 3751int
2204ev_loop (EV_P_ int flags) 3752ev_run (EV_P_ int flags)
2205{ 3753{
2206#if EV_MINIMAL < 2 3754#if EV_FEATURE_API
2207 ++loop_depth; 3755 ++loop_depth;
2208#endif 3756#endif
2209 3757
2210 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 3758 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2211 3759
2212 loop_done = EVUNLOOP_CANCEL; 3760 loop_done = EVBREAK_CANCEL;
2213 3761
2214 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 3762 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2215 3763
2216 do 3764 do
2217 { 3765 {
2218#if EV_VERIFY >= 2 3766#if EV_VERIFY >= 2
2219 ev_loop_verify (EV_A); 3767 ev_verify (EV_A);
2220#endif 3768#endif
2221 3769
2222#ifndef _WIN32 3770#ifndef _WIN32
2223 if (expect_false (curpid)) /* penalise the forking check even more */ 3771 if (ecb_expect_false (curpid)) /* penalise the forking check even more */
2224 if (expect_false (getpid () != curpid)) 3772 if (ecb_expect_false (getpid () != curpid))
2225 { 3773 {
2226 curpid = getpid (); 3774 curpid = getpid ();
2227 postfork = 1; 3775 postfork = 1;
2228 } 3776 }
2229#endif 3777#endif
2230 3778
2231#if EV_FORK_ENABLE 3779#if EV_FORK_ENABLE
2232 /* we might have forked, so queue fork handlers */ 3780 /* we might have forked, so queue fork handlers */
2233 if (expect_false (postfork)) 3781 if (ecb_expect_false (postfork))
2234 if (forkcnt) 3782 if (forkcnt)
2235 { 3783 {
2236 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3784 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2237 EV_INVOKE_PENDING; 3785 EV_INVOKE_PENDING;
2238 } 3786 }
2239#endif 3787#endif
2240 3788
3789#if EV_PREPARE_ENABLE
2241 /* queue prepare watchers (and execute them) */ 3790 /* queue prepare watchers (and execute them) */
2242 if (expect_false (preparecnt)) 3791 if (ecb_expect_false (preparecnt))
2243 { 3792 {
2244 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3793 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2245 EV_INVOKE_PENDING; 3794 EV_INVOKE_PENDING;
2246 } 3795 }
3796#endif
2247 3797
2248 if (expect_false (loop_done)) 3798 if (ecb_expect_false (loop_done))
2249 break; 3799 break;
2250 3800
2251 /* we might have forked, so reify kernel state if necessary */ 3801 /* we might have forked, so reify kernel state if necessary */
2252 if (expect_false (postfork)) 3802 if (ecb_expect_false (postfork))
2253 loop_fork (EV_A); 3803 loop_fork (EV_A);
2254 3804
2255 /* update fd-related kernel structures */ 3805 /* update fd-related kernel structures */
2256 fd_reify (EV_A); 3806 fd_reify (EV_A);
2257 3807
2258 /* calculate blocking time */ 3808 /* calculate blocking time */
2259 { 3809 {
2260 ev_tstamp waittime = 0.; 3810 ev_tstamp waittime = 0.;
2261 ev_tstamp sleeptime = 0.; 3811 ev_tstamp sleeptime = 0.;
2262 3812
3813 /* remember old timestamp for io_blocktime calculation */
3814 ev_tstamp prev_mn_now = mn_now;
3815
3816 /* update time to cancel out callback processing overhead */
3817 time_update (EV_A_ EV_TS_CONST (EV_TSTAMP_HUGE));
3818
3819 /* from now on, we want a pipe-wake-up */
3820 pipe_write_wanted = 1;
3821
3822 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3823
2263 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3824 if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2264 { 3825 {
2265 /* remember old timestamp for io_blocktime calculation */
2266 ev_tstamp prev_mn_now = mn_now;
2267
2268 /* update time to cancel out callback processing overhead */
2269 time_update (EV_A_ 1e100);
2270
2271 waittime = MAX_BLOCKTIME; 3826 waittime = EV_TS_CONST (MAX_BLOCKTIME);
2272 3827
2273 if (timercnt) 3828 if (timercnt)
2274 { 3829 {
2275 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3830 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2276 if (waittime > to) waittime = to; 3831 if (waittime > to) waittime = to;
2277 } 3832 }
2278 3833
2279#if EV_PERIODIC_ENABLE 3834#if EV_PERIODIC_ENABLE
2280 if (periodiccnt) 3835 if (periodiccnt)
2281 { 3836 {
2282 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3837 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2283 if (waittime > to) waittime = to; 3838 if (waittime > to) waittime = to;
2284 } 3839 }
2285#endif 3840#endif
2286 3841
2287 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3842 /* don't let timeouts decrease the waittime below timeout_blocktime */
2288 if (expect_false (waittime < timeout_blocktime)) 3843 if (ecb_expect_false (waittime < timeout_blocktime))
2289 waittime = timeout_blocktime; 3844 waittime = timeout_blocktime;
2290 3845
3846 /* at this point, we NEED to wait, so we have to ensure */
3847 /* to pass a minimum nonzero value to the backend */
3848 if (ecb_expect_false (waittime < backend_mintime))
3849 waittime = backend_mintime;
3850
2291 /* extra check because io_blocktime is commonly 0 */ 3851 /* extra check because io_blocktime is commonly 0 */
2292 if (expect_false (io_blocktime)) 3852 if (ecb_expect_false (io_blocktime))
2293 { 3853 {
2294 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3854 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2295 3855
2296 if (sleeptime > waittime - backend_fudge) 3856 if (sleeptime > waittime - backend_mintime)
2297 sleeptime = waittime - backend_fudge; 3857 sleeptime = waittime - backend_mintime;
2298 3858
2299 if (expect_true (sleeptime > 0.)) 3859 if (ecb_expect_true (sleeptime > EV_TS_CONST (0.)))
2300 { 3860 {
2301 ev_sleep (sleeptime); 3861 ev_sleep (sleeptime);
2302 waittime -= sleeptime; 3862 waittime -= sleeptime;
2303 } 3863 }
2304 } 3864 }
2305 } 3865 }
2306 3866
2307#if EV_MINIMAL < 2 3867#if EV_FEATURE_API
2308 ++loop_count; 3868 ++loop_count;
2309#endif 3869#endif
2310 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3870 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2311 backend_poll (EV_A_ waittime); 3871 backend_poll (EV_A_ waittime);
2312 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 3872 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3873
3874 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3875
3876 ECB_MEMORY_FENCE_ACQUIRE;
3877 if (pipe_write_skipped)
3878 {
3879 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3880 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3881 }
2313 3882
2314 /* update ev_rt_now, do magic */ 3883 /* update ev_rt_now, do magic */
2315 time_update (EV_A_ waittime + sleeptime); 3884 time_update (EV_A_ waittime + sleeptime);
2316 } 3885 }
2317 3886
… …
2324#if EV_IDLE_ENABLE 3893#if EV_IDLE_ENABLE
2325 /* queue idle watchers unless other events are pending */ 3894 /* queue idle watchers unless other events are pending */
2326 idle_reify (EV_A); 3895 idle_reify (EV_A);
2327#endif 3896#endif
2328 3897
3898#if EV_CHECK_ENABLE
2329 /* queue check watchers, to be executed first */ 3899 /* queue check watchers, to be executed first */
2330 if (expect_false (checkcnt)) 3900 if (ecb_expect_false (checkcnt))
2331 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3901 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3902#endif
2332 3903
2333 EV_INVOKE_PENDING; 3904 EV_INVOKE_PENDING;
2334 } 3905 }
2335 while (expect_true ( 3906 while (ecb_expect_true (
2336 activecnt 3907 activecnt
2337 && !loop_done 3908 && !loop_done
2338 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3909 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2339 )); 3910 ));
2340 3911
2341 if (loop_done == EVUNLOOP_ONE) 3912 if (loop_done == EVBREAK_ONE)
2342 loop_done = EVUNLOOP_CANCEL; 3913 loop_done = EVBREAK_CANCEL;
2343 3914
2344#if EV_MINIMAL < 2 3915#if EV_FEATURE_API
2345 --loop_depth; 3916 --loop_depth;
2346#endif 3917#endif
2347}
2348 3918
3919 return activecnt;
3920}
3921
2349void 3922void
2350ev_unloop (EV_P_ int how) 3923ev_break (EV_P_ int how) EV_NOEXCEPT
2351{ 3924{
2352 loop_done = how; 3925 loop_done = how;
2353} 3926}
2354 3927
2355void 3928void
2356ev_ref (EV_P) 3929ev_ref (EV_P) EV_NOEXCEPT
2357{ 3930{
2358 ++activecnt; 3931 ++activecnt;
2359} 3932}
2360 3933
2361void 3934void
2362ev_unref (EV_P) 3935ev_unref (EV_P) EV_NOEXCEPT
2363{ 3936{
2364 --activecnt; 3937 --activecnt;
2365} 3938}
2366 3939
2367void 3940void
2368ev_now_update (EV_P) 3941ev_now_update (EV_P) EV_NOEXCEPT
2369{ 3942{
2370 time_update (EV_A_ 1e100); 3943 time_update (EV_A_ EV_TSTAMP_HUGE);
2371} 3944}
2372 3945
2373void 3946void
2374ev_suspend (EV_P) 3947ev_suspend (EV_P) EV_NOEXCEPT
2375{ 3948{
2376 ev_now_update (EV_A); 3949 ev_now_update (EV_A);
2377} 3950}
2378 3951
2379void 3952void
2380ev_resume (EV_P) 3953ev_resume (EV_P) EV_NOEXCEPT
2381{ 3954{
2382 ev_tstamp mn_prev = mn_now; 3955 ev_tstamp mn_prev = mn_now;
2383 3956
2384 ev_now_update (EV_A); 3957 ev_now_update (EV_A);
2385 timers_reschedule (EV_A_ mn_now - mn_prev); 3958 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2402inline_size void 3975inline_size void
2403wlist_del (WL *head, WL elem) 3976wlist_del (WL *head, WL elem)
2404{ 3977{
2405 while (*head) 3978 while (*head)
2406 { 3979 {
2407 if (expect_true (*head == elem)) 3980 if (ecb_expect_true (*head == elem))
2408 { 3981 {
2409 *head = elem->next; 3982 *head = elem->next;
2410 break; 3983 break;
2411 } 3984 }
2412 3985
… …
2424 w->pending = 0; 3997 w->pending = 0;
2425 } 3998 }
2426} 3999}
2427 4000
2428int 4001int
2429ev_clear_pending (EV_P_ void *w) 4002ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
2430{ 4003{
2431 W w_ = (W)w; 4004 W w_ = (W)w;
2432 int pending = w_->pending; 4005 int pending = w_->pending;
2433 4006
2434 if (expect_true (pending)) 4007 if (ecb_expect_true (pending))
2435 { 4008 {
2436 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 4009 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2437 p->w = (W)&pending_w; 4010 p->w = (W)&pending_w;
2438 w_->pending = 0; 4011 w_->pending = 0;
2439 return p->events; 4012 return p->events;
… …
2466 w->active = 0; 4039 w->active = 0;
2467} 4040}
2468 4041
2469/*****************************************************************************/ 4042/*****************************************************************************/
2470 4043
2471void noinline 4044ecb_noinline
4045void
2472ev_io_start (EV_P_ ev_io *w) 4046ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
2473{ 4047{
2474 int fd = w->fd; 4048 int fd = w->fd;
2475 4049
2476 if (expect_false (ev_is_active (w))) 4050 if (ecb_expect_false (ev_is_active (w)))
2477 return; 4051 return;
2478 4052
2479 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 4053 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2480 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 4054 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2481 4055
4056#if EV_VERIFY >= 2
4057 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
4058#endif
2482 EV_FREQUENT_CHECK; 4059 EV_FREQUENT_CHECK;
2483 4060
2484 ev_start (EV_A_ (W)w, 1); 4061 ev_start (EV_A_ (W)w, 1);
2485 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 4062 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
2486 wlist_add (&anfds[fd].head, (WL)w); 4063 wlist_add (&anfds[fd].head, (WL)w);
4064
4065 /* common bug, apparently */
4066 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
2487 4067
2488 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 4068 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2489 w->events &= ~EV__IOFDSET; 4069 w->events &= ~EV__IOFDSET;
2490 4070
2491 EV_FREQUENT_CHECK; 4071 EV_FREQUENT_CHECK;
2492} 4072}
2493 4073
2494void noinline 4074ecb_noinline
4075void
2495ev_io_stop (EV_P_ ev_io *w) 4076ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
2496{ 4077{
2497 clear_pending (EV_A_ (W)w); 4078 clear_pending (EV_A_ (W)w);
2498 if (expect_false (!ev_is_active (w))) 4079 if (ecb_expect_false (!ev_is_active (w)))
2499 return; 4080 return;
2500 4081
2501 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 4082 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2502 4083
4084#if EV_VERIFY >= 2
4085 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
4086#endif
2503 EV_FREQUENT_CHECK; 4087 EV_FREQUENT_CHECK;
2504 4088
2505 wlist_del (&anfds[w->fd].head, (WL)w); 4089 wlist_del (&anfds[w->fd].head, (WL)w);
2506 ev_stop (EV_A_ (W)w); 4090 ev_stop (EV_A_ (W)w);
2507 4091
2508 fd_change (EV_A_ w->fd, 1); 4092 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2509 4093
2510 EV_FREQUENT_CHECK; 4094 EV_FREQUENT_CHECK;
2511} 4095}
2512 4096
2513void noinline 4097ecb_noinline
4098void
2514ev_timer_start (EV_P_ ev_timer *w) 4099ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
2515{ 4100{
2516 if (expect_false (ev_is_active (w))) 4101 if (ecb_expect_false (ev_is_active (w)))
2517 return; 4102 return;
2518 4103
2519 ev_at (w) += mn_now; 4104 ev_at (w) += mn_now;
2520 4105
2521 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 4106 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2522 4107
2523 EV_FREQUENT_CHECK; 4108 EV_FREQUENT_CHECK;
2524 4109
2525 ++timercnt; 4110 ++timercnt;
2526 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 4111 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
2527 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 4112 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
2528 ANHE_w (timers [ev_active (w)]) = (WT)w; 4113 ANHE_w (timers [ev_active (w)]) = (WT)w;
2529 ANHE_at_cache (timers [ev_active (w)]); 4114 ANHE_at_cache (timers [ev_active (w)]);
2530 upheap (timers, ev_active (w)); 4115 upheap (timers, ev_active (w));
2531 4116
2532 EV_FREQUENT_CHECK; 4117 EV_FREQUENT_CHECK;
2533 4118
2534 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 4119 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2535} 4120}
2536 4121
2537void noinline 4122ecb_noinline
4123void
2538ev_timer_stop (EV_P_ ev_timer *w) 4124ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
2539{ 4125{
2540 clear_pending (EV_A_ (W)w); 4126 clear_pending (EV_A_ (W)w);
2541 if (expect_false (!ev_is_active (w))) 4127 if (ecb_expect_false (!ev_is_active (w)))
2542 return; 4128 return;
2543 4129
2544 EV_FREQUENT_CHECK; 4130 EV_FREQUENT_CHECK;
2545 4131
2546 { 4132 {
… …
2548 4134
2549 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 4135 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2550 4136
2551 --timercnt; 4137 --timercnt;
2552 4138
2553 if (expect_true (active < timercnt + HEAP0)) 4139 if (ecb_expect_true (active < timercnt + HEAP0))
2554 { 4140 {
2555 timers [active] = timers [timercnt + HEAP0]; 4141 timers [active] = timers [timercnt + HEAP0];
2556 adjustheap (timers, timercnt, active); 4142 adjustheap (timers, timercnt, active);
2557 } 4143 }
2558 } 4144 }
2559 4145
2560 EV_FREQUENT_CHECK;
2561
2562 ev_at (w) -= mn_now; 4146 ev_at (w) -= mn_now;
2563 4147
2564 ev_stop (EV_A_ (W)w); 4148 ev_stop (EV_A_ (W)w);
2565}
2566 4149
2567void noinline 4150 EV_FREQUENT_CHECK;
4151}
4152
4153ecb_noinline
4154void
2568ev_timer_again (EV_P_ ev_timer *w) 4155ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
2569{ 4156{
2570 EV_FREQUENT_CHECK; 4157 EV_FREQUENT_CHECK;
4158
4159 clear_pending (EV_A_ (W)w);
2571 4160
2572 if (ev_is_active (w)) 4161 if (ev_is_active (w))
2573 { 4162 {
2574 if (w->repeat) 4163 if (w->repeat)
2575 { 4164 {
… …
2588 4177
2589 EV_FREQUENT_CHECK; 4178 EV_FREQUENT_CHECK;
2590} 4179}
2591 4180
2592ev_tstamp 4181ev_tstamp
2593ev_timer_remaining (EV_P_ ev_timer *w) 4182ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
2594{ 4183{
2595 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4184 return ev_at (w) - (ev_is_active (w) ? mn_now : EV_TS_CONST (0.));
2596} 4185}
2597 4186
2598#if EV_PERIODIC_ENABLE 4187#if EV_PERIODIC_ENABLE
2599void noinline 4188ecb_noinline
4189void
2600ev_periodic_start (EV_P_ ev_periodic *w) 4190ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
2601{ 4191{
2602 if (expect_false (ev_is_active (w))) 4192 if (ecb_expect_false (ev_is_active (w)))
2603 return; 4193 return;
2604 4194
2605 if (w->reschedule_cb) 4195 if (w->reschedule_cb)
2606 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4196 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2607 else if (w->interval) 4197 else if (w->interval)
2608 { 4198 {
2609 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 4199 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2610 /* this formula differs from the one in periodic_reify because we do not always round up */ 4200 periodic_recalc (EV_A_ w);
2611 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2612 } 4201 }
2613 else 4202 else
2614 ev_at (w) = w->offset; 4203 ev_at (w) = w->offset;
2615 4204
2616 EV_FREQUENT_CHECK; 4205 EV_FREQUENT_CHECK;
2617 4206
2618 ++periodiccnt; 4207 ++periodiccnt;
2619 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4208 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2620 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4209 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
2621 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4210 ANHE_w (periodics [ev_active (w)]) = (WT)w;
2622 ANHE_at_cache (periodics [ev_active (w)]); 4211 ANHE_at_cache (periodics [ev_active (w)]);
2623 upheap (periodics, ev_active (w)); 4212 upheap (periodics, ev_active (w));
2624 4213
2625 EV_FREQUENT_CHECK; 4214 EV_FREQUENT_CHECK;
2626 4215
2627 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4216 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2628} 4217}
2629 4218
2630void noinline 4219ecb_noinline
4220void
2631ev_periodic_stop (EV_P_ ev_periodic *w) 4221ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
2632{ 4222{
2633 clear_pending (EV_A_ (W)w); 4223 clear_pending (EV_A_ (W)w);
2634 if (expect_false (!ev_is_active (w))) 4224 if (ecb_expect_false (!ev_is_active (w)))
2635 return; 4225 return;
2636 4226
2637 EV_FREQUENT_CHECK; 4227 EV_FREQUENT_CHECK;
2638 4228
2639 { 4229 {
… …
2641 4231
2642 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 4232 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2643 4233
2644 --periodiccnt; 4234 --periodiccnt;
2645 4235
2646 if (expect_true (active < periodiccnt + HEAP0)) 4236 if (ecb_expect_true (active < periodiccnt + HEAP0))
2647 { 4237 {
2648 periodics [active] = periodics [periodiccnt + HEAP0]; 4238 periodics [active] = periodics [periodiccnt + HEAP0];
2649 adjustheap (periodics, periodiccnt, active); 4239 adjustheap (periodics, periodiccnt, active);
2650 } 4240 }
2651 } 4241 }
2652 4242
2653 EV_FREQUENT_CHECK;
2654
2655 ev_stop (EV_A_ (W)w); 4243 ev_stop (EV_A_ (W)w);
2656}
2657 4244
2658void noinline 4245 EV_FREQUENT_CHECK;
4246}
4247
4248ecb_noinline
4249void
2659ev_periodic_again (EV_P_ ev_periodic *w) 4250ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
2660{ 4251{
2661 /* TODO: use adjustheap and recalculation */ 4252 /* TODO: use adjustheap and recalculation */
2662 ev_periodic_stop (EV_A_ w); 4253 ev_periodic_stop (EV_A_ w);
2663 ev_periodic_start (EV_A_ w); 4254 ev_periodic_start (EV_A_ w);
2664} 4255}
… …
2666 4257
2667#ifndef SA_RESTART 4258#ifndef SA_RESTART
2668# define SA_RESTART 0 4259# define SA_RESTART 0
2669#endif 4260#endif
2670 4261
2671void noinline 4262#if EV_SIGNAL_ENABLE
4263
4264ecb_noinline
4265void
2672ev_signal_start (EV_P_ ev_signal *w) 4266ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
2673{ 4267{
2674 if (expect_false (ev_is_active (w))) 4268 if (ecb_expect_false (ev_is_active (w)))
2675 return; 4269 return;
2676 4270
2677 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4271 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2678 4272
2679#if EV_MULTIPLICITY 4273#if EV_MULTIPLICITY
2680 assert (("libev: a signal must not be attached to two different loops", 4274 assert (("libev: a signal must not be attached to two different loops",
2681 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4275 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2682 4276
2683 signals [w->signum - 1].loop = EV_A; 4277 signals [w->signum - 1].loop = EV_A;
4278 ECB_MEMORY_FENCE_RELEASE;
2684#endif 4279#endif
2685 4280
2686 EV_FREQUENT_CHECK; 4281 EV_FREQUENT_CHECK;
2687 4282
2688#if EV_USE_SIGNALFD 4283#if EV_USE_SIGNALFD
… …
2721 if (!((WL)w)->next) 4316 if (!((WL)w)->next)
2722# if EV_USE_SIGNALFD 4317# if EV_USE_SIGNALFD
2723 if (sigfd < 0) /*TODO*/ 4318 if (sigfd < 0) /*TODO*/
2724# endif 4319# endif
2725 { 4320 {
2726# if _WIN32 4321# ifdef _WIN32
4322 evpipe_init (EV_A);
4323
2727 signal (w->signum, ev_sighandler); 4324 signal (w->signum, ev_sighandler);
2728# else 4325# else
2729 struct sigaction sa; 4326 struct sigaction sa;
2730 4327
2731 evpipe_init (EV_A); 4328 evpipe_init (EV_A);
… …
2733 sa.sa_handler = ev_sighandler; 4330 sa.sa_handler = ev_sighandler;
2734 sigfillset (&sa.sa_mask); 4331 sigfillset (&sa.sa_mask);
2735 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 4332 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2736 sigaction (w->signum, &sa, 0); 4333 sigaction (w->signum, &sa, 0);
2737 4334
4335 if (origflags & EVFLAG_NOSIGMASK)
4336 {
2738 sigemptyset (&sa.sa_mask); 4337 sigemptyset (&sa.sa_mask);
2739 sigaddset (&sa.sa_mask, w->signum); 4338 sigaddset (&sa.sa_mask, w->signum);
2740 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 4339 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
4340 }
2741#endif 4341#endif
2742 } 4342 }
2743 4343
2744 EV_FREQUENT_CHECK; 4344 EV_FREQUENT_CHECK;
2745} 4345}
2746 4346
2747void noinline 4347ecb_noinline
4348void
2748ev_signal_stop (EV_P_ ev_signal *w) 4349ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
2749{ 4350{
2750 clear_pending (EV_A_ (W)w); 4351 clear_pending (EV_A_ (W)w);
2751 if (expect_false (!ev_is_active (w))) 4352 if (ecb_expect_false (!ev_is_active (w)))
2752 return; 4353 return;
2753 4354
2754 EV_FREQUENT_CHECK; 4355 EV_FREQUENT_CHECK;
2755 4356
2756 wlist_del (&signals [w->signum - 1].head, (WL)w); 4357 wlist_del (&signals [w->signum - 1].head, (WL)w);
… …
2762 signals [w->signum - 1].loop = 0; /* unattach from signal */ 4363 signals [w->signum - 1].loop = 0; /* unattach from signal */
2763#endif 4364#endif
2764#if EV_USE_SIGNALFD 4365#if EV_USE_SIGNALFD
2765 if (sigfd >= 0) 4366 if (sigfd >= 0)
2766 { 4367 {
2767 sigprocmask (SIG_UNBLOCK, &sigfd_set, 0);//D 4368 sigset_t ss;
4369
4370 sigemptyset (&ss);
4371 sigaddset (&ss, w->signum);
2768 sigdelset (&sigfd_set, w->signum); 4372 sigdelset (&sigfd_set, w->signum);
4373
2769 signalfd (sigfd, &sigfd_set, 0); 4374 signalfd (sigfd, &sigfd_set, 0);
2770 sigprocmask (SIG_BLOCK, &sigfd_set, 0);//D 4375 sigprocmask (SIG_UNBLOCK, &ss, 0);
2771 /*TODO: maybe unblock signal? */
2772 } 4376 }
2773 else 4377 else
2774#endif 4378#endif
2775 signal (w->signum, SIG_DFL); 4379 signal (w->signum, SIG_DFL);
2776 } 4380 }
2777 4381
2778 EV_FREQUENT_CHECK; 4382 EV_FREQUENT_CHECK;
2779} 4383}
2780 4384
4385#endif
4386
4387#if EV_CHILD_ENABLE
4388
2781void 4389void
2782ev_child_start (EV_P_ ev_child *w) 4390ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
2783{ 4391{
2784#if EV_MULTIPLICITY 4392#if EV_MULTIPLICITY
2785 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4393 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2786#endif 4394#endif
2787 if (expect_false (ev_is_active (w))) 4395 if (ecb_expect_false (ev_is_active (w)))
2788 return; 4396 return;
2789 4397
2790 EV_FREQUENT_CHECK; 4398 EV_FREQUENT_CHECK;
2791 4399
2792 ev_start (EV_A_ (W)w, 1); 4400 ev_start (EV_A_ (W)w, 1);
2793 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4401 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2794 4402
2795 EV_FREQUENT_CHECK; 4403 EV_FREQUENT_CHECK;
2796} 4404}
2797 4405
2798void 4406void
2799ev_child_stop (EV_P_ ev_child *w) 4407ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
2800{ 4408{
2801 clear_pending (EV_A_ (W)w); 4409 clear_pending (EV_A_ (W)w);
2802 if (expect_false (!ev_is_active (w))) 4410 if (ecb_expect_false (!ev_is_active (w)))
2803 return; 4411 return;
2804 4412
2805 EV_FREQUENT_CHECK; 4413 EV_FREQUENT_CHECK;
2806 4414
2807 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4415 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2808 ev_stop (EV_A_ (W)w); 4416 ev_stop (EV_A_ (W)w);
2809 4417
2810 EV_FREQUENT_CHECK; 4418 EV_FREQUENT_CHECK;
2811} 4419}
4420
4421#endif
2812 4422
2813#if EV_STAT_ENABLE 4423#if EV_STAT_ENABLE
2814 4424
2815# ifdef _WIN32 4425# ifdef _WIN32
2816# undef lstat 4426# undef lstat
… …
2819 4429
2820#define DEF_STAT_INTERVAL 5.0074891 4430#define DEF_STAT_INTERVAL 5.0074891
2821#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4431#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2822#define MIN_STAT_INTERVAL 0.1074891 4432#define MIN_STAT_INTERVAL 0.1074891
2823 4433
2824static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4434ecb_noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2825 4435
2826#if EV_USE_INOTIFY 4436#if EV_USE_INOTIFY
2827# define EV_INOTIFY_BUFSIZE 8192
2828 4437
2829static void noinline 4438/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
4439# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
4440
4441ecb_noinline
4442static void
2830infy_add (EV_P_ ev_stat *w) 4443infy_add (EV_P_ ev_stat *w)
2831{ 4444{
2832 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); 4445 w->wd = inotify_add_watch (fs_fd, w->path,
4446 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4447 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4448 | IN_DONT_FOLLOW | IN_MASK_ADD);
2833 4449
2834 if (w->wd < 0) 4450 if (w->wd >= 0)
4451 {
4452 struct statfs sfs;
4453
4454 /* now local changes will be tracked by inotify, but remote changes won't */
4455 /* unless the filesystem is known to be local, we therefore still poll */
4456 /* also do poll on <2.6.25, but with normal frequency */
4457
4458 if (!fs_2625)
4459 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
4460 else if (!statfs (w->path, &sfs)
4461 && (sfs.f_type == 0x1373 /* devfs */
4462 || sfs.f_type == 0x4006 /* fat */
4463 || sfs.f_type == 0x4d44 /* msdos */
4464 || sfs.f_type == 0xEF53 /* ext2/3 */
4465 || sfs.f_type == 0x72b6 /* jffs2 */
4466 || sfs.f_type == 0x858458f6 /* ramfs */
4467 || sfs.f_type == 0x5346544e /* ntfs */
4468 || sfs.f_type == 0x3153464a /* jfs */
4469 || sfs.f_type == 0x9123683e /* btrfs */
4470 || sfs.f_type == 0x52654973 /* reiser3 */
4471 || sfs.f_type == 0x01021994 /* tmpfs */
4472 || sfs.f_type == 0x58465342 /* xfs */))
4473 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
4474 else
4475 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2835 { 4476 }
4477 else
4478 {
4479 /* can't use inotify, continue to stat */
2836 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4480 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2837 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2838 4481
2839 /* monitor some parent directory for speedup hints */ 4482 /* if path is not there, monitor some parent directory for speedup hints */
2840 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 4483 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2841 /* but an efficiency issue only */ 4484 /* but an efficiency issue only */
2842 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 4485 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2843 { 4486 {
2844 char path [4096]; 4487 char path [4096];
… …
2854 if (!pend || pend == path) 4497 if (!pend || pend == path)
2855 break; 4498 break;
2856 4499
2857 *pend = 0; 4500 *pend = 0;
2858 w->wd = inotify_add_watch (fs_fd, path, mask); 4501 w->wd = inotify_add_watch (fs_fd, path, mask);
2859 } 4502 }
2860 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 4503 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2861 } 4504 }
2862 } 4505 }
2863 4506
2864 if (w->wd >= 0) 4507 if (w->wd >= 0)
2865 {
2866 struct statfs sfs;
2867
2868 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4508 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2869 4509
2870 /* now local changes will be tracked by inotify, but remote changes won't */ 4510 /* now re-arm timer, if required */
2871 /* unless the filesystem it known to be local, we therefore still poll */ 4511 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2872 /* also do poll on <2.6.25, but with normal frequency */
2873
2874 if (fs_2625 && !statfs (w->path, &sfs))
2875 if (sfs.f_type == 0x1373 /* devfs */
2876 || sfs.f_type == 0xEF53 /* ext2/3 */
2877 || sfs.f_type == 0x3153464a /* jfs */
2878 || sfs.f_type == 0x52654973 /* reiser3 */
2879 || sfs.f_type == 0x01021994 /* tempfs */
2880 || sfs.f_type == 0x58465342 /* xfs */)
2881 return;
2882
2883 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2884 ev_timer_again (EV_A_ &w->timer); 4512 ev_timer_again (EV_A_ &w->timer);
2885 } 4513 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2886} 4514}
2887 4515
2888static void noinline 4516ecb_noinline
4517static void
2889infy_del (EV_P_ ev_stat *w) 4518infy_del (EV_P_ ev_stat *w)
2890{ 4519{
2891 int slot; 4520 int slot;
2892 int wd = w->wd; 4521 int wd = w->wd;
2893 4522
2894 if (wd < 0) 4523 if (wd < 0)
2895 return; 4524 return;
2896 4525
2897 w->wd = -2; 4526 w->wd = -2;
2898 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 4527 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2899 wlist_del (&fs_hash [slot].head, (WL)w); 4528 wlist_del (&fs_hash [slot].head, (WL)w);
2900 4529
2901 /* remove this watcher, if others are watching it, they will rearm */ 4530 /* remove this watcher, if others are watching it, they will rearm */
2902 inotify_rm_watch (fs_fd, wd); 4531 inotify_rm_watch (fs_fd, wd);
2903} 4532}
2904 4533
2905static void noinline 4534ecb_noinline
4535static void
2906infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4536infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2907{ 4537{
2908 if (slot < 0) 4538 if (slot < 0)
2909 /* overflow, need to check for all hash slots */ 4539 /* overflow, need to check for all hash slots */
2910 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4540 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2911 infy_wd (EV_A_ slot, wd, ev); 4541 infy_wd (EV_A_ slot, wd, ev);
2912 else 4542 else
2913 { 4543 {
2914 WL w_; 4544 WL w_;
2915 4545
2916 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 4546 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2917 { 4547 {
2918 ev_stat *w = (ev_stat *)w_; 4548 ev_stat *w = (ev_stat *)w_;
2919 w_ = w_->next; /* lets us remove this watcher and all before it */ 4549 w_ = w_->next; /* lets us remove this watcher and all before it */
2920 4550
2921 if (w->wd == wd || wd == -1) 4551 if (w->wd == wd || wd == -1)
2922 { 4552 {
2923 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 4553 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2924 { 4554 {
2925 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4555 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2926 w->wd = -1; 4556 w->wd = -1;
2927 infy_add (EV_A_ w); /* re-add, no matter what */ 4557 infy_add (EV_A_ w); /* re-add, no matter what */
2928 } 4558 }
2929 4559
2930 stat_timer_cb (EV_A_ &w->timer, 0); 4560 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2935 4565
2936static void 4566static void
2937infy_cb (EV_P_ ev_io *w, int revents) 4567infy_cb (EV_P_ ev_io *w, int revents)
2938{ 4568{
2939 char buf [EV_INOTIFY_BUFSIZE]; 4569 char buf [EV_INOTIFY_BUFSIZE];
2940 struct inotify_event *ev = (struct inotify_event *)buf;
2941 int ofs; 4570 int ofs;
2942 int len = read (fs_fd, buf, sizeof (buf)); 4571 int len = read (fs_fd, buf, sizeof (buf));
2943 4572
2944 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 4573 for (ofs = 0; ofs < len; )
4574 {
4575 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2945 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4576 infy_wd (EV_A_ ev->wd, ev->wd, ev);
4577 ofs += sizeof (struct inotify_event) + ev->len;
4578 }
2946} 4579}
2947 4580
2948inline_size void 4581inline_size ecb_cold
4582void
2949check_2625 (EV_P) 4583ev_check_2625 (EV_P)
2950{ 4584{
2951 /* kernels < 2.6.25 are borked 4585 /* kernels < 2.6.25 are borked
2952 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4586 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2953 */ 4587 */
2954 struct utsname buf; 4588 if (ev_linux_version () < 0x020619)
2955 int major, minor, micro;
2956
2957 if (uname (&buf))
2958 return; 4589 return;
2959 4590
2960 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2961 return;
2962
2963 if (major < 2
2964 || (major == 2 && minor < 6)
2965 || (major == 2 && minor == 6 && micro < 25))
2966 return;
2967
2968 fs_2625 = 1; 4591 fs_2625 = 1;
4592}
4593
4594inline_size int
4595infy_newfd (void)
4596{
4597#if defined IN_CLOEXEC && defined IN_NONBLOCK
4598 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
4599 if (fd >= 0)
4600 return fd;
4601#endif
4602 return inotify_init ();
2969} 4603}
2970 4604
2971inline_size void 4605inline_size void
2972infy_init (EV_P) 4606infy_init (EV_P)
2973{ 4607{
2974 if (fs_fd != -2) 4608 if (fs_fd != -2)
2975 return; 4609 return;
2976 4610
2977 fs_fd = -1; 4611 fs_fd = -1;
2978 4612
2979 check_2625 (EV_A); 4613 ev_check_2625 (EV_A);
2980 4614
2981 fs_fd = inotify_init (); 4615 fs_fd = infy_newfd ();
2982 4616
2983 if (fs_fd >= 0) 4617 if (fs_fd >= 0)
2984 { 4618 {
4619 fd_intern (fs_fd);
2985 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 4620 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2986 ev_set_priority (&fs_w, EV_MAXPRI); 4621 ev_set_priority (&fs_w, EV_MAXPRI);
2987 ev_io_start (EV_A_ &fs_w); 4622 ev_io_start (EV_A_ &fs_w);
4623 ev_unref (EV_A);
2988 } 4624 }
2989} 4625}
2990 4626
2991inline_size void 4627inline_size void
2992infy_fork (EV_P) 4628infy_fork (EV_P)
… …
2994 int slot; 4630 int slot;
2995 4631
2996 if (fs_fd < 0) 4632 if (fs_fd < 0)
2997 return; 4633 return;
2998 4634
4635 ev_ref (EV_A);
4636 ev_io_stop (EV_A_ &fs_w);
2999 close (fs_fd); 4637 close (fs_fd);
3000 fs_fd = inotify_init (); 4638 fs_fd = infy_newfd ();
3001 4639
4640 if (fs_fd >= 0)
4641 {
4642 fd_intern (fs_fd);
4643 ev_io_set (&fs_w, fs_fd, EV_READ);
4644 ev_io_start (EV_A_ &fs_w);
4645 ev_unref (EV_A);
4646 }
4647
3002 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4648 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
3003 { 4649 {
3004 WL w_ = fs_hash [slot].head; 4650 WL w_ = fs_hash [slot].head;
3005 fs_hash [slot].head = 0; 4651 fs_hash [slot].head = 0;
3006 4652
3007 while (w_) 4653 while (w_)
… …
3012 w->wd = -1; 4658 w->wd = -1;
3013 4659
3014 if (fs_fd >= 0) 4660 if (fs_fd >= 0)
3015 infy_add (EV_A_ w); /* re-add, no matter what */ 4661 infy_add (EV_A_ w); /* re-add, no matter what */
3016 else 4662 else
4663 {
4664 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
4665 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3017 ev_timer_again (EV_A_ &w->timer); 4666 ev_timer_again (EV_A_ &w->timer);
4667 if (ev_is_active (&w->timer)) ev_unref (EV_A);
4668 }
3018 } 4669 }
3019 } 4670 }
3020} 4671}
3021 4672
3022#endif 4673#endif
… …
3026#else 4677#else
3027# define EV_LSTAT(p,b) lstat (p, b) 4678# define EV_LSTAT(p,b) lstat (p, b)
3028#endif 4679#endif
3029 4680
3030void 4681void
3031ev_stat_stat (EV_P_ ev_stat *w) 4682ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
3032{ 4683{
3033 if (lstat (w->path, &w->attr) < 0) 4684 if (lstat (w->path, &w->attr) < 0)
3034 w->attr.st_nlink = 0; 4685 w->attr.st_nlink = 0;
3035 else if (!w->attr.st_nlink) 4686 else if (!w->attr.st_nlink)
3036 w->attr.st_nlink = 1; 4687 w->attr.st_nlink = 1;
3037} 4688}
3038 4689
3039static void noinline 4690ecb_noinline
4691static void
3040stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4692stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3041{ 4693{
3042 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4694 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3043 4695
3044 /* we copy this here each the time so that */ 4696 ev_statdata prev = w->attr;
3045 /* prev has the old value when the callback gets invoked */
3046 w->prev = w->attr;
3047 ev_stat_stat (EV_A_ w); 4697 ev_stat_stat (EV_A_ w);
3048 4698
3049 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 4699 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
3050 if ( 4700 if (
3051 w->prev.st_dev != w->attr.st_dev 4701 prev.st_dev != w->attr.st_dev
3052 || w->prev.st_ino != w->attr.st_ino 4702 || prev.st_ino != w->attr.st_ino
3053 || w->prev.st_mode != w->attr.st_mode 4703 || prev.st_mode != w->attr.st_mode
3054 || w->prev.st_nlink != w->attr.st_nlink 4704 || prev.st_nlink != w->attr.st_nlink
3055 || w->prev.st_uid != w->attr.st_uid 4705 || prev.st_uid != w->attr.st_uid
3056 || w->prev.st_gid != w->attr.st_gid 4706 || prev.st_gid != w->attr.st_gid
3057 || w->prev.st_rdev != w->attr.st_rdev 4707 || prev.st_rdev != w->attr.st_rdev
3058 || w->prev.st_size != w->attr.st_size 4708 || prev.st_size != w->attr.st_size
3059 || w->prev.st_atime != w->attr.st_atime 4709 || prev.st_atime != w->attr.st_atime
3060 || w->prev.st_mtime != w->attr.st_mtime 4710 || prev.st_mtime != w->attr.st_mtime
3061 || w->prev.st_ctime != w->attr.st_ctime 4711 || prev.st_ctime != w->attr.st_ctime
3062 ) { 4712 ) {
4713 /* we only update w->prev on actual differences */
4714 /* in case we test more often than invoke the callback, */
4715 /* to ensure that prev is always different to attr */
4716 w->prev = prev;
4717
3063 #if EV_USE_INOTIFY 4718 #if EV_USE_INOTIFY
3064 if (fs_fd >= 0) 4719 if (fs_fd >= 0)
3065 { 4720 {
3066 infy_del (EV_A_ w); 4721 infy_del (EV_A_ w);
3067 infy_add (EV_A_ w); 4722 infy_add (EV_A_ w);
… …
3072 ev_feed_event (EV_A_ w, EV_STAT); 4727 ev_feed_event (EV_A_ w, EV_STAT);
3073 } 4728 }
3074} 4729}
3075 4730
3076void 4731void
3077ev_stat_start (EV_P_ ev_stat *w) 4732ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
3078{ 4733{
3079 if (expect_false (ev_is_active (w))) 4734 if (ecb_expect_false (ev_is_active (w)))
3080 return; 4735 return;
3081 4736
3082 ev_stat_stat (EV_A_ w); 4737 ev_stat_stat (EV_A_ w);
3083 4738
3084 if (w->interval < MIN_STAT_INTERVAL && w->interval) 4739 if (w->interval < MIN_STAT_INTERVAL && w->interval)
… …
3092 4747
3093 if (fs_fd >= 0) 4748 if (fs_fd >= 0)
3094 infy_add (EV_A_ w); 4749 infy_add (EV_A_ w);
3095 else 4750 else
3096#endif 4751#endif
4752 {
3097 ev_timer_again (EV_A_ &w->timer); 4753 ev_timer_again (EV_A_ &w->timer);
4754 ev_unref (EV_A);
4755 }
3098 4756
3099 ev_start (EV_A_ (W)w, 1); 4757 ev_start (EV_A_ (W)w, 1);
3100 4758
3101 EV_FREQUENT_CHECK; 4759 EV_FREQUENT_CHECK;
3102} 4760}
3103 4761
3104void 4762void
3105ev_stat_stop (EV_P_ ev_stat *w) 4763ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
3106{ 4764{
3107 clear_pending (EV_A_ (W)w); 4765 clear_pending (EV_A_ (W)w);
3108 if (expect_false (!ev_is_active (w))) 4766 if (ecb_expect_false (!ev_is_active (w)))
3109 return; 4767 return;
3110 4768
3111 EV_FREQUENT_CHECK; 4769 EV_FREQUENT_CHECK;
3112 4770
3113#if EV_USE_INOTIFY 4771#if EV_USE_INOTIFY
3114 infy_del (EV_A_ w); 4772 infy_del (EV_A_ w);
3115#endif 4773#endif
4774
4775 if (ev_is_active (&w->timer))
4776 {
4777 ev_ref (EV_A);
3116 ev_timer_stop (EV_A_ &w->timer); 4778 ev_timer_stop (EV_A_ &w->timer);
4779 }
3117 4780
3118 ev_stop (EV_A_ (W)w); 4781 ev_stop (EV_A_ (W)w);
3119 4782
3120 EV_FREQUENT_CHECK; 4783 EV_FREQUENT_CHECK;
3121} 4784}
3122#endif 4785#endif
3123 4786
3124#if EV_IDLE_ENABLE 4787#if EV_IDLE_ENABLE
3125void 4788void
3126ev_idle_start (EV_P_ ev_idle *w) 4789ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
3127{ 4790{
3128 if (expect_false (ev_is_active (w))) 4791 if (ecb_expect_false (ev_is_active (w)))
3129 return; 4792 return;
3130 4793
3131 pri_adjust (EV_A_ (W)w); 4794 pri_adjust (EV_A_ (W)w);
3132 4795
3133 EV_FREQUENT_CHECK; 4796 EV_FREQUENT_CHECK;
… …
3136 int active = ++idlecnt [ABSPRI (w)]; 4799 int active = ++idlecnt [ABSPRI (w)];
3137 4800
3138 ++idleall; 4801 ++idleall;
3139 ev_start (EV_A_ (W)w, active); 4802 ev_start (EV_A_ (W)w, active);
3140 4803
3141 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 4804 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
3142 idles [ABSPRI (w)][active - 1] = w; 4805 idles [ABSPRI (w)][active - 1] = w;
3143 } 4806 }
3144 4807
3145 EV_FREQUENT_CHECK; 4808 EV_FREQUENT_CHECK;
3146} 4809}
3147 4810
3148void 4811void
3149ev_idle_stop (EV_P_ ev_idle *w) 4812ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
3150{ 4813{
3151 clear_pending (EV_A_ (W)w); 4814 clear_pending (EV_A_ (W)w);
3152 if (expect_false (!ev_is_active (w))) 4815 if (ecb_expect_false (!ev_is_active (w)))
3153 return; 4816 return;
3154 4817
3155 EV_FREQUENT_CHECK; 4818 EV_FREQUENT_CHECK;
3156 4819
3157 { 4820 {
… …
3166 4829
3167 EV_FREQUENT_CHECK; 4830 EV_FREQUENT_CHECK;
3168} 4831}
3169#endif 4832#endif
3170 4833
4834#if EV_PREPARE_ENABLE
3171void 4835void
3172ev_prepare_start (EV_P_ ev_prepare *w) 4836ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
3173{ 4837{
3174 if (expect_false (ev_is_active (w))) 4838 if (ecb_expect_false (ev_is_active (w)))
3175 return; 4839 return;
3176 4840
3177 EV_FREQUENT_CHECK; 4841 EV_FREQUENT_CHECK;
3178 4842
3179 ev_start (EV_A_ (W)w, ++preparecnt); 4843 ev_start (EV_A_ (W)w, ++preparecnt);
3180 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4844 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
3181 prepares [preparecnt - 1] = w; 4845 prepares [preparecnt - 1] = w;
3182 4846
3183 EV_FREQUENT_CHECK; 4847 EV_FREQUENT_CHECK;
3184} 4848}
3185 4849
3186void 4850void
3187ev_prepare_stop (EV_P_ ev_prepare *w) 4851ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
3188{ 4852{
3189 clear_pending (EV_A_ (W)w); 4853 clear_pending (EV_A_ (W)w);
3190 if (expect_false (!ev_is_active (w))) 4854 if (ecb_expect_false (!ev_is_active (w)))
3191 return; 4855 return;
3192 4856
3193 EV_FREQUENT_CHECK; 4857 EV_FREQUENT_CHECK;
3194 4858
3195 { 4859 {
… …
3201 4865
3202 ev_stop (EV_A_ (W)w); 4866 ev_stop (EV_A_ (W)w);
3203 4867
3204 EV_FREQUENT_CHECK; 4868 EV_FREQUENT_CHECK;
3205} 4869}
4870#endif
3206 4871
4872#if EV_CHECK_ENABLE
3207void 4873void
3208ev_check_start (EV_P_ ev_check *w) 4874ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
3209{ 4875{
3210 if (expect_false (ev_is_active (w))) 4876 if (ecb_expect_false (ev_is_active (w)))
3211 return; 4877 return;
3212 4878
3213 EV_FREQUENT_CHECK; 4879 EV_FREQUENT_CHECK;
3214 4880
3215 ev_start (EV_A_ (W)w, ++checkcnt); 4881 ev_start (EV_A_ (W)w, ++checkcnt);
3216 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 4882 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
3217 checks [checkcnt - 1] = w; 4883 checks [checkcnt - 1] = w;
3218 4884
3219 EV_FREQUENT_CHECK; 4885 EV_FREQUENT_CHECK;
3220} 4886}
3221 4887
3222void 4888void
3223ev_check_stop (EV_P_ ev_check *w) 4889ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
3224{ 4890{
3225 clear_pending (EV_A_ (W)w); 4891 clear_pending (EV_A_ (W)w);
3226 if (expect_false (!ev_is_active (w))) 4892 if (ecb_expect_false (!ev_is_active (w)))
3227 return; 4893 return;
3228 4894
3229 EV_FREQUENT_CHECK; 4895 EV_FREQUENT_CHECK;
3230 4896
3231 { 4897 {
… …
3237 4903
3238 ev_stop (EV_A_ (W)w); 4904 ev_stop (EV_A_ (W)w);
3239 4905
3240 EV_FREQUENT_CHECK; 4906 EV_FREQUENT_CHECK;
3241} 4907}
4908#endif
3242 4909
3243#if EV_EMBED_ENABLE 4910#if EV_EMBED_ENABLE
3244void noinline 4911ecb_noinline
4912void
3245ev_embed_sweep (EV_P_ ev_embed *w) 4913ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
3246{ 4914{
3247 ev_loop (w->other, EVLOOP_NONBLOCK); 4915 ev_run (w->other, EVRUN_NOWAIT);
3248} 4916}
3249 4917
3250static void 4918static void
3251embed_io_cb (EV_P_ ev_io *io, int revents) 4919embed_io_cb (EV_P_ ev_io *io, int revents)
3252{ 4920{
3253 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4921 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3254 4922
3255 if (ev_cb (w)) 4923 if (ev_cb (w))
3256 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4924 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3257 else 4925 else
3258 ev_loop (w->other, EVLOOP_NONBLOCK); 4926 ev_run (w->other, EVRUN_NOWAIT);
3259} 4927}
3260 4928
3261static void 4929static void
3262embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4930embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3263{ 4931{
… …
3267 EV_P = w->other; 4935 EV_P = w->other;
3268 4936
3269 while (fdchangecnt) 4937 while (fdchangecnt)
3270 { 4938 {
3271 fd_reify (EV_A); 4939 fd_reify (EV_A);
3272 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4940 ev_run (EV_A_ EVRUN_NOWAIT);
3273 } 4941 }
3274 } 4942 }
3275} 4943}
3276 4944
3277static void 4945static void
… …
3283 4951
3284 { 4952 {
3285 EV_P = w->other; 4953 EV_P = w->other;
3286 4954
3287 ev_loop_fork (EV_A); 4955 ev_loop_fork (EV_A);
3288 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4956 ev_run (EV_A_ EVRUN_NOWAIT);
3289 } 4957 }
3290 4958
3291 ev_embed_start (EV_A_ w); 4959 ev_embed_start (EV_A_ w);
3292} 4960}
3293 4961
… …
3298 ev_idle_stop (EV_A_ idle); 4966 ev_idle_stop (EV_A_ idle);
3299} 4967}
3300#endif 4968#endif
3301 4969
3302void 4970void
3303ev_embed_start (EV_P_ ev_embed *w) 4971ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
3304{ 4972{
3305 if (expect_false (ev_is_active (w))) 4973 if (ecb_expect_false (ev_is_active (w)))
3306 return; 4974 return;
3307 4975
3308 { 4976 {
3309 EV_P = w->other; 4977 EV_P = w->other;
3310 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4978 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
… …
3329 4997
3330 EV_FREQUENT_CHECK; 4998 EV_FREQUENT_CHECK;
3331} 4999}
3332 5000
3333void 5001void
3334ev_embed_stop (EV_P_ ev_embed *w) 5002ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
3335{ 5003{
3336 clear_pending (EV_A_ (W)w); 5004 clear_pending (EV_A_ (W)w);
3337 if (expect_false (!ev_is_active (w))) 5005 if (ecb_expect_false (!ev_is_active (w)))
3338 return; 5006 return;
3339 5007
3340 EV_FREQUENT_CHECK; 5008 EV_FREQUENT_CHECK;
3341 5009
3342 ev_io_stop (EV_A_ &w->io); 5010 ev_io_stop (EV_A_ &w->io);
3343 ev_prepare_stop (EV_A_ &w->prepare); 5011 ev_prepare_stop (EV_A_ &w->prepare);
3344 ev_fork_stop (EV_A_ &w->fork); 5012 ev_fork_stop (EV_A_ &w->fork);
3345 5013
5014 ev_stop (EV_A_ (W)w);
5015
3346 EV_FREQUENT_CHECK; 5016 EV_FREQUENT_CHECK;
3347} 5017}
3348#endif 5018#endif
3349 5019
3350#if EV_FORK_ENABLE 5020#if EV_FORK_ENABLE
3351void 5021void
3352ev_fork_start (EV_P_ ev_fork *w) 5022ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
3353{ 5023{
3354 if (expect_false (ev_is_active (w))) 5024 if (ecb_expect_false (ev_is_active (w)))
3355 return; 5025 return;
3356 5026
3357 EV_FREQUENT_CHECK; 5027 EV_FREQUENT_CHECK;
3358 5028
3359 ev_start (EV_A_ (W)w, ++forkcnt); 5029 ev_start (EV_A_ (W)w, ++forkcnt);
3360 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 5030 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
3361 forks [forkcnt - 1] = w; 5031 forks [forkcnt - 1] = w;
3362 5032
3363 EV_FREQUENT_CHECK; 5033 EV_FREQUENT_CHECK;
3364} 5034}
3365 5035
3366void 5036void
3367ev_fork_stop (EV_P_ ev_fork *w) 5037ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
3368{ 5038{
3369 clear_pending (EV_A_ (W)w); 5039 clear_pending (EV_A_ (W)w);
3370 if (expect_false (!ev_is_active (w))) 5040 if (ecb_expect_false (!ev_is_active (w)))
3371 return; 5041 return;
3372 5042
3373 EV_FREQUENT_CHECK; 5043 EV_FREQUENT_CHECK;
3374 5044
3375 { 5045 {
… …
3383 5053
3384 EV_FREQUENT_CHECK; 5054 EV_FREQUENT_CHECK;
3385} 5055}
3386#endif 5056#endif
3387 5057
5058#if EV_CLEANUP_ENABLE
5059void
5060ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
5061{
5062 if (ecb_expect_false (ev_is_active (w)))
5063 return;
5064
5065 EV_FREQUENT_CHECK;
5066
5067 ev_start (EV_A_ (W)w, ++cleanupcnt);
5068 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
5069 cleanups [cleanupcnt - 1] = w;
5070
5071 /* cleanup watchers should never keep a refcount on the loop */
5072 ev_unref (EV_A);
5073 EV_FREQUENT_CHECK;
5074}
5075
5076void
5077ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
5078{
5079 clear_pending (EV_A_ (W)w);
5080 if (ecb_expect_false (!ev_is_active (w)))
5081 return;
5082
5083 EV_FREQUENT_CHECK;
5084 ev_ref (EV_A);
5085
5086 {
5087 int active = ev_active (w);
5088
5089 cleanups [active - 1] = cleanups [--cleanupcnt];
5090 ev_active (cleanups [active - 1]) = active;
5091 }
5092
5093 ev_stop (EV_A_ (W)w);
5094
5095 EV_FREQUENT_CHECK;
5096}
5097#endif
5098
3388#if EV_ASYNC_ENABLE 5099#if EV_ASYNC_ENABLE
3389void 5100void
3390ev_async_start (EV_P_ ev_async *w) 5101ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
3391{ 5102{
3392 if (expect_false (ev_is_active (w))) 5103 if (ecb_expect_false (ev_is_active (w)))
3393 return; 5104 return;
3394 5105
5106 w->sent = 0;
5107
3395 evpipe_init (EV_A); 5108 evpipe_init (EV_A);
3396 5109
3397 EV_FREQUENT_CHECK; 5110 EV_FREQUENT_CHECK;
3398 5111
3399 ev_start (EV_A_ (W)w, ++asynccnt); 5112 ev_start (EV_A_ (W)w, ++asynccnt);
3400 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 5113 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
3401 asyncs [asynccnt - 1] = w; 5114 asyncs [asynccnt - 1] = w;
3402 5115
3403 EV_FREQUENT_CHECK; 5116 EV_FREQUENT_CHECK;
3404} 5117}
3405 5118
3406void 5119void
3407ev_async_stop (EV_P_ ev_async *w) 5120ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
3408{ 5121{
3409 clear_pending (EV_A_ (W)w); 5122 clear_pending (EV_A_ (W)w);
3410 if (expect_false (!ev_is_active (w))) 5123 if (ecb_expect_false (!ev_is_active (w)))
3411 return; 5124 return;
3412 5125
3413 EV_FREQUENT_CHECK; 5126 EV_FREQUENT_CHECK;
3414 5127
3415 { 5128 {
… …
3423 5136
3424 EV_FREQUENT_CHECK; 5137 EV_FREQUENT_CHECK;
3425} 5138}
3426 5139
3427void 5140void
3428ev_async_send (EV_P_ ev_async *w) 5141ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
3429{ 5142{
3430 w->sent = 1; 5143 w->sent = 1;
3431 evpipe_write (EV_A_ &async_pending); 5144 evpipe_write (EV_A_ &async_pending);
3432} 5145}
3433#endif 5146#endif
… …
3470 5183
3471 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5184 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3472} 5185}
3473 5186
3474void 5187void
3475ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 5188ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
3476{ 5189{
3477 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5190 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3478
3479 if (expect_false (!once))
3480 {
3481 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
3482 return;
3483 }
3484 5191
3485 once->cb = cb; 5192 once->cb = cb;
3486 once->arg = arg; 5193 once->arg = arg;
3487 5194
3488 ev_init (&once->io, once_cb_io); 5195 ev_init (&once->io, once_cb_io);
… …
3501} 5208}
3502 5209
3503/*****************************************************************************/ 5210/*****************************************************************************/
3504 5211
3505#if EV_WALK_ENABLE 5212#if EV_WALK_ENABLE
5213ecb_cold
3506void 5214void
3507ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 5215ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
3508{ 5216{
3509 int i, j; 5217 int i, j;
3510 ev_watcher_list *wl, *wn; 5218 ev_watcher_list *wl, *wn;
3511 5219
3512 if (types & (EV_IO | EV_EMBED)) 5220 if (types & (EV_IO | EV_EMBED))
… …
3555 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 5263 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3556#endif 5264#endif
3557 5265
3558#if EV_IDLE_ENABLE 5266#if EV_IDLE_ENABLE
3559 if (types & EV_IDLE) 5267 if (types & EV_IDLE)
3560 for (j = NUMPRI; i--; ) 5268 for (j = NUMPRI; j--; )
3561 for (i = idlecnt [j]; i--; ) 5269 for (i = idlecnt [j]; i--; )
3562 cb (EV_A_ EV_IDLE, idles [j][i]); 5270 cb (EV_A_ EV_IDLE, idles [j][i]);
3563#endif 5271#endif
3564 5272
3565#if EV_FORK_ENABLE 5273#if EV_FORK_ENABLE
… …
3573 if (types & EV_ASYNC) 5281 if (types & EV_ASYNC)
3574 for (i = asynccnt; i--; ) 5282 for (i = asynccnt; i--; )
3575 cb (EV_A_ EV_ASYNC, asyncs [i]); 5283 cb (EV_A_ EV_ASYNC, asyncs [i]);
3576#endif 5284#endif
3577 5285
5286#if EV_PREPARE_ENABLE
3578 if (types & EV_PREPARE) 5287 if (types & EV_PREPARE)
3579 for (i = preparecnt; i--; ) 5288 for (i = preparecnt; i--; )
3580#if EV_EMBED_ENABLE 5289# if EV_EMBED_ENABLE
3581 if (ev_cb (prepares [i]) != embed_prepare_cb) 5290 if (ev_cb (prepares [i]) != embed_prepare_cb)
3582#endif 5291# endif
3583 cb (EV_A_ EV_PREPARE, prepares [i]); 5292 cb (EV_A_ EV_PREPARE, prepares [i]);
5293#endif
3584 5294
5295#if EV_CHECK_ENABLE
3585 if (types & EV_CHECK) 5296 if (types & EV_CHECK)
3586 for (i = checkcnt; i--; ) 5297 for (i = checkcnt; i--; )
3587 cb (EV_A_ EV_CHECK, checks [i]); 5298 cb (EV_A_ EV_CHECK, checks [i]);
5299#endif
3588 5300
5301#if EV_SIGNAL_ENABLE
3589 if (types & EV_SIGNAL) 5302 if (types & EV_SIGNAL)
3590 for (i = 0; i < EV_NSIG - 1; ++i) 5303 for (i = 0; i < EV_NSIG - 1; ++i)
3591 for (wl = signals [i].head; wl; ) 5304 for (wl = signals [i].head; wl; )
3592 { 5305 {
3593 wn = wl->next; 5306 wn = wl->next;
3594 cb (EV_A_ EV_SIGNAL, wl); 5307 cb (EV_A_ EV_SIGNAL, wl);
3595 wl = wn; 5308 wl = wn;
3596 } 5309 }
5310#endif
3597 5311
5312#if EV_CHILD_ENABLE
3598 if (types & EV_CHILD) 5313 if (types & EV_CHILD)
3599 for (i = EV_PID_HASHSIZE; i--; ) 5314 for (i = (EV_PID_HASHSIZE); i--; )
3600 for (wl = childs [i]; wl; ) 5315 for (wl = childs [i]; wl; )
3601 { 5316 {
3602 wn = wl->next; 5317 wn = wl->next;
3603 cb (EV_A_ EV_CHILD, wl); 5318 cb (EV_A_ EV_CHILD, wl);
3604 wl = wn; 5319 wl = wn;
3605 } 5320 }
5321#endif
3606/* EV_STAT 0x00001000 /* stat data changed */ 5322/* EV_STAT 0x00001000 /* stat data changed */
3607/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 5323/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3608} 5324}
3609#endif 5325#endif
3610 5326
3611#if EV_MULTIPLICITY 5327#if EV_MULTIPLICITY
3612 #include "ev_wrap.h" 5328 #include "ev_wrap.h"
3613#endif 5329#endif
3614 5330
3615#ifdef __cplusplus
3616}
3617#endif
3618

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