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Comparing libev/ev.c (file contents):
Revision 1.310 by root, Sun Jul 26 04:43:03 2009 UTC vs.
Revision 1.501 by root, Mon Jul 1 21:47:42 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 /* ev_linxaio uses ev_poll.c:ev_epoll_create */
453# undef EV_USE_LINUXAIO
454# define EV_USE_LINUXAIO 0
455# else
456# define EV_NEED_SYSCALL 1
457# endif
458#endif
459
460#if EV_USE_IOURING
461# include <sys/syscall.h>
462# if !__alpha && !SYS_io_uring_setup
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
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 483#endif
379 484
380#if EV_SELECT_IS_WINSOCKET
381# include <winsock.h>
382#endif
383
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>
387# ifndef EFD_NONBLOCK 488# ifndef EFD_NONBLOCK
388# define EFD_NONBLOCK O_NONBLOCK 489# define EFD_NONBLOCK O_NONBLOCK
389# endif 490# endif
390# ifndef EFD_CLOEXEC 491# ifndef EFD_CLOEXEC
492# ifdef O_CLOEXEC
391# define EFD_CLOEXEC O_CLOEXEC 493# define EFD_CLOEXEC O_CLOEXEC
494# else
495# define EFD_CLOEXEC 02000000
496# endif
392# endif 497# endif
393# ifdef __cplusplus 498EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
394extern "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
395# endif 506# endif
396int eventfd (unsigned int initval, int flags); 507# ifndef SFD_CLOEXEC
397# ifdef __cplusplus 508# ifdef O_CLOEXEC
398} 509# define SFD_CLOEXEC O_CLOEXEC
510# else
511# define SFD_CLOEXEC 02000000
512# endif
399# endif 513# endif
400#endif 514EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
401 515
402#if EV_USE_SIGNALFD 516struct signalfd_siginfo
517{
518 uint32_t ssi_signo;
519 char pad[128 - sizeof (uint32_t)];
520};
521#endif
522
523/*****************************************************************************/
524
525#if EV_NEED_SYSCALL
526
403# include <sys/signalfd.h> 527#include <sys/syscall.h>
404#endif
405 528
406/**/ 529/*
530 * define some syscall wrappers for common architectures
531 * this is mostly for nice looks during debugging, not performance.
532 * our syscalls return < 0, not == -1, on error. which is good
533 * enough for linux aio.
534 * TODO: arm is also common nowadays, maybe even mips and x86
535 * TODO: after implementing this, it suddenly looks like overkill, but its hard to remove...
536 */
537#if __GNUC__ && __linux && ECB_AMD64 && !defined __OPTIMIZE_SIZE__
538 /* the costly errno access probably kills this for size optimisation */
539
540 #define ev_syscall(nr,narg,arg1,arg2,arg3,arg4,arg5) \
541 ({ \
542 long res; \
543 register unsigned long r5 __asm__ ("r8" ); \
544 register unsigned long r4 __asm__ ("r10"); \
545 register unsigned long r3 __asm__ ("rdx"); \
546 register unsigned long r2 __asm__ ("rsi"); \
547 register unsigned long r1 __asm__ ("rdi"); \
548 if (narg >= 5) r5 = (unsigned long)(arg5); \
549 if (narg >= 4) r4 = (unsigned long)(arg4); \
550 if (narg >= 3) r3 = (unsigned long)(arg3); \
551 if (narg >= 2) r2 = (unsigned long)(arg2); \
552 if (narg >= 1) r1 = (unsigned long)(arg1); \
553 __asm__ __volatile__ ( \
554 "syscall\n\t" \
555 : "=a" (res) \
556 : "0" (nr), "r" (r1), "r" (r2), "r" (r3), "r" (r4), "r" (r5) \
557 : "cc", "r11", "cx", "memory"); \
558 errno = -res; \
559 res; \
560 })
561
562#endif
563
564#ifdef ev_syscall
565 #define ev_syscall0(nr) ev_syscall (nr, 0, 0, 0, 0, 0, 0
566 #define ev_syscall1(nr,arg1) ev_syscall (nr, 1, arg1, 0, 0, 0, 0)
567 #define ev_syscall2(nr,arg1,arg2) ev_syscall (nr, 2, arg1, arg2, 0, 0, 0)
568 #define ev_syscall3(nr,arg1,arg2,arg3) ev_syscall (nr, 3, arg1, arg2, arg3, 0, 0)
569 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) ev_syscall (nr, 3, arg1, arg2, arg3, arg4, 0)
570 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) ev_syscall (nr, 5, arg1, arg2, arg3, arg4, arg5)
571#else
572 #define ev_syscall0(nr) syscall (nr)
573 #define ev_syscall1(nr,arg1) syscall (nr, arg1)
574 #define ev_syscall2(nr,arg1,arg2) syscall (nr, arg1, arg2)
575 #define ev_syscall3(nr,arg1,arg2,arg3) syscall (nr, arg1, arg2, arg3)
576 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) syscall (nr, arg1, arg2, arg3, arg4)
577 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) syscall (nr, arg1, arg2, arg3, arg4, arg5)
578#endif
579
580#endif
581
582/*****************************************************************************/
407 583
408#if EV_VERIFY >= 3 584#if EV_VERIFY >= 3
409# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 585# define EV_FREQUENT_CHECK ev_verify (EV_A)
410#else 586#else
411# define EV_FREQUENT_CHECK do { } while (0) 587# define EV_FREQUENT_CHECK do { } while (0)
412#endif 588#endif
413 589
414/* 590/*
415 * This is used to avoid floating point rounding problems. 591 * This is used to work around floating point rounding problems.
416 * It is added to ev_rt_now when scheduling periodics
417 * to ensure progress, time-wise, even when rounding
418 * errors are against us.
419 * This value is good at least till the year 4000. 592 * This value is good at least till the year 4000.
420 * Better solutions welcome.
421 */ 593 */
422#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 594#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
595/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
423 596
424#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 597#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
425#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 598#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
426/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
427 599
600#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
601#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
602
603/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
604/* ECB.H BEGIN */
605/*
606 * libecb - http://software.schmorp.de/pkg/libecb
607 *
608 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
609 * Copyright (©) 2011 Emanuele Giaquinta
610 * All rights reserved.
611 *
612 * Redistribution and use in source and binary forms, with or without modifica-
613 * tion, are permitted provided that the following conditions are met:
614 *
615 * 1. Redistributions of source code must retain the above copyright notice,
616 * this list of conditions and the following disclaimer.
617 *
618 * 2. Redistributions in binary form must reproduce the above copyright
619 * notice, this list of conditions and the following disclaimer in the
620 * documentation and/or other materials provided with the distribution.
621 *
622 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
623 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
624 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
625 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
626 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
627 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
628 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
629 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
630 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
631 * OF THE POSSIBILITY OF SUCH DAMAGE.
632 *
633 * Alternatively, the contents of this file may be used under the terms of
634 * the GNU General Public License ("GPL") version 2 or any later version,
635 * in which case the provisions of the GPL are applicable instead of
636 * the above. If you wish to allow the use of your version of this file
637 * only under the terms of the GPL and not to allow others to use your
638 * version of this file under the BSD license, indicate your decision
639 * by deleting the provisions above and replace them with the notice
640 * and other provisions required by the GPL. If you do not delete the
641 * provisions above, a recipient may use your version of this file under
642 * either the BSD or the GPL.
643 */
644
645#ifndef ECB_H
646#define ECB_H
647
648/* 16 bits major, 16 bits minor */
649#define ECB_VERSION 0x00010006
650
651#ifdef _WIN32
652 typedef signed char int8_t;
653 typedef unsigned char uint8_t;
654 typedef signed short int16_t;
655 typedef unsigned short uint16_t;
656 typedef signed int int32_t;
657 typedef unsigned int uint32_t;
428#if __GNUC__ >= 4 658 #if __GNUC__
659 typedef signed long long int64_t;
660 typedef unsigned long long uint64_t;
661 #else /* _MSC_VER || __BORLANDC__ */
662 typedef signed __int64 int64_t;
663 typedef unsigned __int64 uint64_t;
664 #endif
665 #ifdef _WIN64
666 #define ECB_PTRSIZE 8
667 typedef uint64_t uintptr_t;
668 typedef int64_t intptr_t;
669 #else
670 #define ECB_PTRSIZE 4
671 typedef uint32_t uintptr_t;
672 typedef int32_t intptr_t;
673 #endif
674#else
675 #include <inttypes.h>
676 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
677 #define ECB_PTRSIZE 8
678 #else
679 #define ECB_PTRSIZE 4
680 #endif
681#endif
682
683#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
684#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
685
686/* work around x32 idiocy by defining proper macros */
687#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
688 #if _ILP32
689 #define ECB_AMD64_X32 1
690 #else
691 #define ECB_AMD64 1
692 #endif
693#endif
694
695/* many compilers define _GNUC_ to some versions but then only implement
696 * what their idiot authors think are the "more important" extensions,
697 * causing enormous grief in return for some better fake benchmark numbers.
698 * or so.
699 * we try to detect these and simply assume they are not gcc - if they have
700 * an issue with that they should have done it right in the first place.
701 */
702#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
703 #define ECB_GCC_VERSION(major,minor) 0
704#else
705 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
706#endif
707
708#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
709
710#if __clang__ && defined __has_builtin
711 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
712#else
713 #define ECB_CLANG_BUILTIN(x) 0
714#endif
715
716#if __clang__ && defined __has_extension
717 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
718#else
719 #define ECB_CLANG_EXTENSION(x) 0
720#endif
721
722#define ECB_CPP (__cplusplus+0)
723#define ECB_CPP11 (__cplusplus >= 201103L)
724#define ECB_CPP14 (__cplusplus >= 201402L)
725#define ECB_CPP17 (__cplusplus >= 201703L)
726
727#if ECB_CPP
728 #define ECB_C 0
729 #define ECB_STDC_VERSION 0
730#else
731 #define ECB_C 1
732 #define ECB_STDC_VERSION __STDC_VERSION__
733#endif
734
735#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
736#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
737#define ECB_C17 (ECB_STDC_VERSION >= 201710L)
738
739#if ECB_CPP
740 #define ECB_EXTERN_C extern "C"
741 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
742 #define ECB_EXTERN_C_END }
743#else
744 #define ECB_EXTERN_C extern
745 #define ECB_EXTERN_C_BEG
746 #define ECB_EXTERN_C_END
747#endif
748
749/*****************************************************************************/
750
751/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
752/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
753
754#if ECB_NO_THREADS
755 #define ECB_NO_SMP 1
756#endif
757
758#if ECB_NO_SMP
759 #define ECB_MEMORY_FENCE do { } while (0)
760#endif
761
762/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
763#if __xlC__ && ECB_CPP
764 #include <builtins.h>
765#endif
766
767#if 1400 <= _MSC_VER
768 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
769#endif
770
771#ifndef ECB_MEMORY_FENCE
772 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
773 #define ECB_MEMORY_FENCE_RELAXED __asm__ __volatile__ ("" : : : "memory")
774 #if __i386 || __i386__
775 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
776 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
777 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
778 #elif ECB_GCC_AMD64
779 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
780 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
781 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
782 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
783 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
784 #elif defined __ARM_ARCH_2__ \
785 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
786 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
787 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
788 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
789 || defined __ARM_ARCH_5TEJ__
790 /* should not need any, unless running old code on newer cpu - arm doesn't support that */
791 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
792 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
793 || defined __ARM_ARCH_6T2__
794 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
795 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
796 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
797 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
798 #elif __aarch64__
799 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
800 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
801 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
802 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
803 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
804 #elif defined __s390__ || defined __s390x__
805 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
806 #elif defined __mips__
807 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
808 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
809 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
810 #elif defined __alpha__
811 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
812 #elif defined __hppa__
813 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
814 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
815 #elif defined __ia64__
816 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
817 #elif defined __m68k__
818 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
819 #elif defined __m88k__
820 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
821 #elif defined __sh__
822 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
823 #endif
824 #endif
825#endif
826
827#ifndef ECB_MEMORY_FENCE
828 #if ECB_GCC_VERSION(4,7)
829 /* see comment below (stdatomic.h) about the C11 memory model. */
830 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
831 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
832 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
833 #define ECB_MEMORY_FENCE_RELAXED __atomic_thread_fence (__ATOMIC_RELAXED)
834
835 #elif ECB_CLANG_EXTENSION(c_atomic)
836 /* see comment below (stdatomic.h) about the C11 memory model. */
837 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
838 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
839 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
840 #define ECB_MEMORY_FENCE_RELAXED __c11_atomic_thread_fence (__ATOMIC_RELAXED)
841
842 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
843 #define ECB_MEMORY_FENCE __sync_synchronize ()
844 #elif _MSC_VER >= 1500 /* VC++ 2008 */
845 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
846 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
847 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
848 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
849 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
850 #elif _MSC_VER >= 1400 /* VC++ 2005 */
851 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
852 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
853 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
854 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
855 #elif defined _WIN32
856 #include <WinNT.h>
857 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
858 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
859 #include <mbarrier.h>
860 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
861 #define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier ()
862 #define ECB_MEMORY_FENCE_RELEASE __machine_rel_barrier ()
863 #define ECB_MEMORY_FENCE_RELAXED __compiler_barrier ()
864 #elif __xlC__
865 #define ECB_MEMORY_FENCE __sync ()
866 #endif
867#endif
868
869#ifndef ECB_MEMORY_FENCE
870 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
871 /* we assume that these memory fences work on all variables/all memory accesses, */
872 /* not just C11 atomics and atomic accesses */
873 #include <stdatomic.h>
874 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
875 #define ECB_MEMORY_FENCE_ACQUIRE atomic_thread_fence (memory_order_acquire)
876 #define ECB_MEMORY_FENCE_RELEASE atomic_thread_fence (memory_order_release)
877 #endif
878#endif
879
880#ifndef ECB_MEMORY_FENCE
881 #if !ECB_AVOID_PTHREADS
882 /*
883 * if you get undefined symbol references to pthread_mutex_lock,
884 * or failure to find pthread.h, then you should implement
885 * the ECB_MEMORY_FENCE operations for your cpu/compiler
886 * OR provide pthread.h and link against the posix thread library
887 * of your system.
888 */
889 #include <pthread.h>
890 #define ECB_NEEDS_PTHREADS 1
891 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
892
893 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
894 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
895 #endif
896#endif
897
898#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
899 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
900#endif
901
902#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
903 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
904#endif
905
906#if !defined ECB_MEMORY_FENCE_RELAXED && defined ECB_MEMORY_FENCE
907 #define ECB_MEMORY_FENCE_RELAXED ECB_MEMORY_FENCE /* very heavy-handed */
908#endif
909
910/*****************************************************************************/
911
912#if ECB_CPP
913 #define ecb_inline static inline
914#elif ECB_GCC_VERSION(2,5)
915 #define ecb_inline static __inline__
916#elif ECB_C99
917 #define ecb_inline static inline
918#else
919 #define ecb_inline static
920#endif
921
922#if ECB_GCC_VERSION(3,3)
923 #define ecb_restrict __restrict__
924#elif ECB_C99
925 #define ecb_restrict restrict
926#else
927 #define ecb_restrict
928#endif
929
930typedef int ecb_bool;
931
932#define ECB_CONCAT_(a, b) a ## b
933#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
934#define ECB_STRINGIFY_(a) # a
935#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
936#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
937
938#define ecb_function_ ecb_inline
939
940#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
941 #define ecb_attribute(attrlist) __attribute__ (attrlist)
942#else
943 #define ecb_attribute(attrlist)
944#endif
945
946#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
947 #define ecb_is_constant(expr) __builtin_constant_p (expr)
948#else
949 /* possible C11 impl for integral types
950 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
951 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
952
953 #define ecb_is_constant(expr) 0
954#endif
955
956#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
429# define expect(expr,value) __builtin_expect ((expr),(value)) 957 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
430# define noinline __attribute__ ((noinline))
431#else 958#else
432# define expect(expr,value) (expr) 959 #define ecb_expect(expr,value) (expr)
433# define noinline
434# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
435# define inline
436# endif 960#endif
437#endif
438 961
962#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
963 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
964#else
965 #define ecb_prefetch(addr,rw,locality)
966#endif
967
968/* no emulation for ecb_decltype */
969#if ECB_CPP11
970 // older implementations might have problems with decltype(x)::type, work around it
971 template<class T> struct ecb_decltype_t { typedef T type; };
972 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
973#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
974 #define ecb_decltype(x) __typeof__ (x)
975#endif
976
977#if _MSC_VER >= 1300
978 #define ecb_deprecated __declspec (deprecated)
979#else
980 #define ecb_deprecated ecb_attribute ((__deprecated__))
981#endif
982
983#if _MSC_VER >= 1500
984 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
985#elif ECB_GCC_VERSION(4,5)
986 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
987#else
988 #define ecb_deprecated_message(msg) ecb_deprecated
989#endif
990
991#if _MSC_VER >= 1400
992 #define ecb_noinline __declspec (noinline)
993#else
994 #define ecb_noinline ecb_attribute ((__noinline__))
995#endif
996
997#define ecb_unused ecb_attribute ((__unused__))
998#define ecb_const ecb_attribute ((__const__))
999#define ecb_pure ecb_attribute ((__pure__))
1000
1001#if ECB_C11 || __IBMC_NORETURN
1002 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
1003 #define ecb_noreturn _Noreturn
1004#elif ECB_CPP11
1005 #define ecb_noreturn [[noreturn]]
1006#elif _MSC_VER >= 1200
1007 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
1008 #define ecb_noreturn __declspec (noreturn)
1009#else
1010 #define ecb_noreturn ecb_attribute ((__noreturn__))
1011#endif
1012
1013#if ECB_GCC_VERSION(4,3)
1014 #define ecb_artificial ecb_attribute ((__artificial__))
1015 #define ecb_hot ecb_attribute ((__hot__))
1016 #define ecb_cold ecb_attribute ((__cold__))
1017#else
1018 #define ecb_artificial
1019 #define ecb_hot
1020 #define ecb_cold
1021#endif
1022
1023/* put around conditional expressions if you are very sure that the */
1024/* expression is mostly true or mostly false. note that these return */
1025/* booleans, not the expression. */
439#define expect_false(expr) expect ((expr) != 0, 0) 1026#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
440#define expect_true(expr) expect ((expr) != 0, 1) 1027#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
1028/* for compatibility to the rest of the world */
1029#define ecb_likely(expr) ecb_expect_true (expr)
1030#define ecb_unlikely(expr) ecb_expect_false (expr)
1031
1032/* count trailing zero bits and count # of one bits */
1033#if ECB_GCC_VERSION(3,4) \
1034 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
1035 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
1036 && ECB_CLANG_BUILTIN(__builtin_popcount))
1037 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
1038 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
1039 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
1040 #define ecb_ctz32(x) __builtin_ctz (x)
1041 #define ecb_ctz64(x) __builtin_ctzll (x)
1042 #define ecb_popcount32(x) __builtin_popcount (x)
1043 /* no popcountll */
1044#else
1045 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
1046 ecb_function_ ecb_const int
1047 ecb_ctz32 (uint32_t x)
1048 {
1049#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1050 unsigned long r;
1051 _BitScanForward (&r, x);
1052 return (int)r;
1053#else
1054 int r = 0;
1055
1056 x &= ~x + 1; /* this isolates the lowest bit */
1057
1058#if ECB_branchless_on_i386
1059 r += !!(x & 0xaaaaaaaa) << 0;
1060 r += !!(x & 0xcccccccc) << 1;
1061 r += !!(x & 0xf0f0f0f0) << 2;
1062 r += !!(x & 0xff00ff00) << 3;
1063 r += !!(x & 0xffff0000) << 4;
1064#else
1065 if (x & 0xaaaaaaaa) r += 1;
1066 if (x & 0xcccccccc) r += 2;
1067 if (x & 0xf0f0f0f0) r += 4;
1068 if (x & 0xff00ff00) r += 8;
1069 if (x & 0xffff0000) r += 16;
1070#endif
1071
1072 return r;
1073#endif
1074 }
1075
1076 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
1077 ecb_function_ ecb_const int
1078 ecb_ctz64 (uint64_t x)
1079 {
1080#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1081 unsigned long r;
1082 _BitScanForward64 (&r, x);
1083 return (int)r;
1084#else
1085 int shift = x & 0xffffffff ? 0 : 32;
1086 return ecb_ctz32 (x >> shift) + shift;
1087#endif
1088 }
1089
1090 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
1091 ecb_function_ ecb_const int
1092 ecb_popcount32 (uint32_t x)
1093 {
1094 x -= (x >> 1) & 0x55555555;
1095 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
1096 x = ((x >> 4) + x) & 0x0f0f0f0f;
1097 x *= 0x01010101;
1098
1099 return x >> 24;
1100 }
1101
1102 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
1103 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
1104 {
1105#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1106 unsigned long r;
1107 _BitScanReverse (&r, x);
1108 return (int)r;
1109#else
1110 int r = 0;
1111
1112 if (x >> 16) { x >>= 16; r += 16; }
1113 if (x >> 8) { x >>= 8; r += 8; }
1114 if (x >> 4) { x >>= 4; r += 4; }
1115 if (x >> 2) { x >>= 2; r += 2; }
1116 if (x >> 1) { r += 1; }
1117
1118 return r;
1119#endif
1120 }
1121
1122 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
1123 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
1124 {
1125#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1126 unsigned long r;
1127 _BitScanReverse64 (&r, x);
1128 return (int)r;
1129#else
1130 int r = 0;
1131
1132 if (x >> 32) { x >>= 32; r += 32; }
1133
1134 return r + ecb_ld32 (x);
1135#endif
1136 }
1137#endif
1138
1139ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
1140ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
1141ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
1142ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
1143
1144ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
1145ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
1146{
1147 return ( (x * 0x0802U & 0x22110U)
1148 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
1149}
1150
1151ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
1152ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
1153{
1154 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
1155 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
1156 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
1157 x = ( x >> 8 ) | ( x << 8);
1158
1159 return x;
1160}
1161
1162ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
1163ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
1164{
1165 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
1166 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
1167 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
1168 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
1169 x = ( x >> 16 ) | ( x << 16);
1170
1171 return x;
1172}
1173
1174/* popcount64 is only available on 64 bit cpus as gcc builtin */
1175/* so for this version we are lazy */
1176ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
1177ecb_function_ ecb_const int
1178ecb_popcount64 (uint64_t x)
1179{
1180 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
1181}
1182
1183ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
1184ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
1185ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
1186ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
1187ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
1188ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
1189ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
1190ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
1191
1192ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
1193ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
1194ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
1195ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
1196ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
1197ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
1198ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
1199ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
1200
1201#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1202 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1203 #define ecb_bswap16(x) __builtin_bswap16 (x)
1204 #else
1205 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1206 #endif
1207 #define ecb_bswap32(x) __builtin_bswap32 (x)
1208 #define ecb_bswap64(x) __builtin_bswap64 (x)
1209#elif _MSC_VER
1210 #include <stdlib.h>
1211 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1212 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1213 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
1214#else
1215 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
1216 ecb_function_ ecb_const uint16_t
1217 ecb_bswap16 (uint16_t x)
1218 {
1219 return ecb_rotl16 (x, 8);
1220 }
1221
1222 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
1223 ecb_function_ ecb_const uint32_t
1224 ecb_bswap32 (uint32_t x)
1225 {
1226 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
1227 }
1228
1229 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
1230 ecb_function_ ecb_const uint64_t
1231 ecb_bswap64 (uint64_t x)
1232 {
1233 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
1234 }
1235#endif
1236
1237#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
1238 #define ecb_unreachable() __builtin_unreachable ()
1239#else
1240 /* this seems to work fine, but gcc always emits a warning for it :/ */
1241 ecb_inline ecb_noreturn void ecb_unreachable (void);
1242 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
1243#endif
1244
1245/* try to tell the compiler that some condition is definitely true */
1246#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
1247
1248ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
1249ecb_inline ecb_const uint32_t
1250ecb_byteorder_helper (void)
1251{
1252 /* the union code still generates code under pressure in gcc, */
1253 /* but less than using pointers, and always seems to */
1254 /* successfully return a constant. */
1255 /* the reason why we have this horrible preprocessor mess */
1256 /* is to avoid it in all cases, at least on common architectures */
1257 /* or when using a recent enough gcc version (>= 4.6) */
1258#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1259 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1260 #define ECB_LITTLE_ENDIAN 1
1261 return 0x44332211;
1262#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1263 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1264 #define ECB_BIG_ENDIAN 1
1265 return 0x11223344;
1266#else
1267 union
1268 {
1269 uint8_t c[4];
1270 uint32_t u;
1271 } u = { 0x11, 0x22, 0x33, 0x44 };
1272 return u.u;
1273#endif
1274}
1275
1276ecb_inline ecb_const ecb_bool ecb_big_endian (void);
1277ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
1278ecb_inline ecb_const ecb_bool ecb_little_endian (void);
1279ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
1280
1281#if ECB_GCC_VERSION(3,0) || ECB_C99
1282 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1283#else
1284 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1285#endif
1286
1287#if ECB_CPP
1288 template<typename T>
1289 static inline T ecb_div_rd (T val, T div)
1290 {
1291 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1292 }
1293 template<typename T>
1294 static inline T ecb_div_ru (T val, T div)
1295 {
1296 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1297 }
1298#else
1299 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1300 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1301#endif
1302
1303#if ecb_cplusplus_does_not_suck
1304 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1305 template<typename T, int N>
1306 static inline int ecb_array_length (const T (&arr)[N])
1307 {
1308 return N;
1309 }
1310#else
1311 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1312#endif
1313
1314ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1315ecb_function_ ecb_const uint32_t
1316ecb_binary16_to_binary32 (uint32_t x)
1317{
1318 unsigned int s = (x & 0x8000) << (31 - 15);
1319 int e = (x >> 10) & 0x001f;
1320 unsigned int m = x & 0x03ff;
1321
1322 if (ecb_expect_false (e == 31))
1323 /* infinity or NaN */
1324 e = 255 - (127 - 15);
1325 else if (ecb_expect_false (!e))
1326 {
1327 if (ecb_expect_true (!m))
1328 /* zero, handled by code below by forcing e to 0 */
1329 e = 0 - (127 - 15);
1330 else
1331 {
1332 /* subnormal, renormalise */
1333 unsigned int s = 10 - ecb_ld32 (m);
1334
1335 m = (m << s) & 0x3ff; /* mask implicit bit */
1336 e -= s - 1;
1337 }
1338 }
1339
1340 /* e and m now are normalised, or zero, (or inf or nan) */
1341 e += 127 - 15;
1342
1343 return s | (e << 23) | (m << (23 - 10));
1344}
1345
1346ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1347ecb_function_ ecb_const uint16_t
1348ecb_binary32_to_binary16 (uint32_t x)
1349{
1350 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1351 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1352 unsigned int m = x & 0x007fffff;
1353
1354 x &= 0x7fffffff;
1355
1356 /* if it's within range of binary16 normals, use fast path */
1357 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1358 {
1359 /* mantissa round-to-even */
1360 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1361
1362 /* handle overflow */
1363 if (ecb_expect_false (m >= 0x00800000))
1364 {
1365 m >>= 1;
1366 e += 1;
1367 }
1368
1369 return s | (e << 10) | (m >> (23 - 10));
1370 }
1371
1372 /* handle large numbers and infinity */
1373 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1374 return s | 0x7c00;
1375
1376 /* handle zero, subnormals and small numbers */
1377 if (ecb_expect_true (x < 0x38800000))
1378 {
1379 /* zero */
1380 if (ecb_expect_true (!x))
1381 return s;
1382
1383 /* handle subnormals */
1384
1385 /* too small, will be zero */
1386 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1387 return s;
1388
1389 m |= 0x00800000; /* make implicit bit explicit */
1390
1391 /* very tricky - we need to round to the nearest e (+10) bit value */
1392 {
1393 unsigned int bits = 14 - e;
1394 unsigned int half = (1 << (bits - 1)) - 1;
1395 unsigned int even = (m >> bits) & 1;
1396
1397 /* if this overflows, we will end up with a normalised number */
1398 m = (m + half + even) >> bits;
1399 }
1400
1401 return s | m;
1402 }
1403
1404 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1405 m >>= 13;
1406
1407 return s | 0x7c00 | m | !m;
1408}
1409
1410/*******************************************************************************/
1411/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1412
1413/* basically, everything uses "ieee pure-endian" floating point numbers */
1414/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1415#if 0 \
1416 || __i386 || __i386__ \
1417 || ECB_GCC_AMD64 \
1418 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1419 || defined __s390__ || defined __s390x__ \
1420 || defined __mips__ \
1421 || defined __alpha__ \
1422 || defined __hppa__ \
1423 || defined __ia64__ \
1424 || defined __m68k__ \
1425 || defined __m88k__ \
1426 || defined __sh__ \
1427 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1428 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1429 || defined __aarch64__
1430 #define ECB_STDFP 1
1431 #include <string.h> /* for memcpy */
1432#else
1433 #define ECB_STDFP 0
1434#endif
1435
1436#ifndef ECB_NO_LIBM
1437
1438 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1439
1440 /* only the oldest of old doesn't have this one. solaris. */
1441 #ifdef INFINITY
1442 #define ECB_INFINITY INFINITY
1443 #else
1444 #define ECB_INFINITY HUGE_VAL
1445 #endif
1446
1447 #ifdef NAN
1448 #define ECB_NAN NAN
1449 #else
1450 #define ECB_NAN ECB_INFINITY
1451 #endif
1452
1453 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1454 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1455 #define ecb_frexpf(x,e) frexpf ((x), (e))
1456 #else
1457 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1458 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1459 #endif
1460
1461 /* convert a float to ieee single/binary32 */
1462 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1463 ecb_function_ ecb_const uint32_t
1464 ecb_float_to_binary32 (float x)
1465 {
1466 uint32_t r;
1467
1468 #if ECB_STDFP
1469 memcpy (&r, &x, 4);
1470 #else
1471 /* slow emulation, works for anything but -0 */
1472 uint32_t m;
1473 int e;
1474
1475 if (x == 0e0f ) return 0x00000000U;
1476 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1477 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1478 if (x != x ) return 0x7fbfffffU;
1479
1480 m = ecb_frexpf (x, &e) * 0x1000000U;
1481
1482 r = m & 0x80000000U;
1483
1484 if (r)
1485 m = -m;
1486
1487 if (e <= -126)
1488 {
1489 m &= 0xffffffU;
1490 m >>= (-125 - e);
1491 e = -126;
1492 }
1493
1494 r |= (e + 126) << 23;
1495 r |= m & 0x7fffffU;
1496 #endif
1497
1498 return r;
1499 }
1500
1501 /* converts an ieee single/binary32 to a float */
1502 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1503 ecb_function_ ecb_const float
1504 ecb_binary32_to_float (uint32_t x)
1505 {
1506 float r;
1507
1508 #if ECB_STDFP
1509 memcpy (&r, &x, 4);
1510 #else
1511 /* emulation, only works for normals and subnormals and +0 */
1512 int neg = x >> 31;
1513 int e = (x >> 23) & 0xffU;
1514
1515 x &= 0x7fffffU;
1516
1517 if (e)
1518 x |= 0x800000U;
1519 else
1520 e = 1;
1521
1522 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1523 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1524
1525 r = neg ? -r : r;
1526 #endif
1527
1528 return r;
1529 }
1530
1531 /* convert a double to ieee double/binary64 */
1532 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1533 ecb_function_ ecb_const uint64_t
1534 ecb_double_to_binary64 (double x)
1535 {
1536 uint64_t r;
1537
1538 #if ECB_STDFP
1539 memcpy (&r, &x, 8);
1540 #else
1541 /* slow emulation, works for anything but -0 */
1542 uint64_t m;
1543 int e;
1544
1545 if (x == 0e0 ) return 0x0000000000000000U;
1546 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1547 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1548 if (x != x ) return 0X7ff7ffffffffffffU;
1549
1550 m = frexp (x, &e) * 0x20000000000000U;
1551
1552 r = m & 0x8000000000000000;;
1553
1554 if (r)
1555 m = -m;
1556
1557 if (e <= -1022)
1558 {
1559 m &= 0x1fffffffffffffU;
1560 m >>= (-1021 - e);
1561 e = -1022;
1562 }
1563
1564 r |= ((uint64_t)(e + 1022)) << 52;
1565 r |= m & 0xfffffffffffffU;
1566 #endif
1567
1568 return r;
1569 }
1570
1571 /* converts an ieee double/binary64 to a double */
1572 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1573 ecb_function_ ecb_const double
1574 ecb_binary64_to_double (uint64_t x)
1575 {
1576 double r;
1577
1578 #if ECB_STDFP
1579 memcpy (&r, &x, 8);
1580 #else
1581 /* emulation, only works for normals and subnormals and +0 */
1582 int neg = x >> 63;
1583 int e = (x >> 52) & 0x7ffU;
1584
1585 x &= 0xfffffffffffffU;
1586
1587 if (e)
1588 x |= 0x10000000000000U;
1589 else
1590 e = 1;
1591
1592 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1593 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1594
1595 r = neg ? -r : r;
1596 #endif
1597
1598 return r;
1599 }
1600
1601 /* convert a float to ieee half/binary16 */
1602 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1603 ecb_function_ ecb_const uint16_t
1604 ecb_float_to_binary16 (float x)
1605 {
1606 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1607 }
1608
1609 /* convert an ieee half/binary16 to float */
1610 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1611 ecb_function_ ecb_const float
1612 ecb_binary16_to_float (uint16_t x)
1613 {
1614 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1615 }
1616
1617#endif
1618
1619#endif
1620
1621/* ECB.H END */
1622
1623#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1624/* if your architecture doesn't need memory fences, e.g. because it is
1625 * single-cpu/core, or if you use libev in a project that doesn't use libev
1626 * from multiple threads, then you can define ECB_NO_THREADS when compiling
1627 * libev, in which cases the memory fences become nops.
1628 * alternatively, you can remove this #error and link against libpthread,
1629 * which will then provide the memory fences.
1630 */
1631# error "memory fences not defined for your architecture, please report"
1632#endif
1633
1634#ifndef ECB_MEMORY_FENCE
1635# define ECB_MEMORY_FENCE do { } while (0)
1636# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1637# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1638#endif
1639
441#define inline_size static inline 1640#define inline_size ecb_inline
442 1641
443#if EV_MINIMAL 1642#if EV_FEATURE_CODE
444# define inline_speed static noinline
445#else
446# define inline_speed static inline 1643# define inline_speed ecb_inline
1644#else
1645# define inline_speed ecb_noinline static
447#endif 1646#endif
448 1647
449#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1648#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
450 1649
451#if EV_MINPRI == EV_MAXPRI 1650#if EV_MINPRI == EV_MAXPRI
452# define ABSPRI(w) (((W)w), 0) 1651# define ABSPRI(w) (((W)w), 0)
453#else 1652#else
454# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1653# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
455#endif 1654#endif
456 1655
457#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1656#define EMPTY /* required for microsofts broken pseudo-c compiler */
458#define EMPTY2(a,b) /* used to suppress some warnings */
459 1657
460typedef ev_watcher *W; 1658typedef ev_watcher *W;
461typedef ev_watcher_list *WL; 1659typedef ev_watcher_list *WL;
462typedef ev_watcher_time *WT; 1660typedef ev_watcher_time *WT;
463 1661
464#define ev_active(w) ((W)(w))->active 1662#define ev_active(w) ((W)(w))->active
465#define ev_at(w) ((WT)(w))->at 1663#define ev_at(w) ((WT)(w))->at
466 1664
467#if EV_USE_REALTIME 1665#if EV_USE_REALTIME
468/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 1666/* sig_atomic_t is used to avoid per-thread variables or locking but still */
469/* giving it a reasonably high chance of working on typical architetcures */ 1667/* giving it a reasonably high chance of working on typical architectures */
470static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 1668static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
471#endif 1669#endif
472 1670
473#if EV_USE_MONOTONIC 1671#if EV_USE_MONOTONIC
474static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 1672static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
475#endif 1673#endif
476 1674
1675#ifndef EV_FD_TO_WIN32_HANDLE
1676# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
1677#endif
1678#ifndef EV_WIN32_HANDLE_TO_FD
1679# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
1680#endif
1681#ifndef EV_WIN32_CLOSE_FD
1682# define EV_WIN32_CLOSE_FD(fd) close (fd)
1683#endif
1684
477#ifdef _WIN32 1685#ifdef _WIN32
478# include "ev_win32.c" 1686# include "ev_win32.c"
479#endif 1687#endif
480 1688
481/*****************************************************************************/ 1689/*****************************************************************************/
482 1690
1691#if EV_USE_LINUXAIO
1692# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
1693#endif
1694
1695/* define a suitable floor function (only used by periodics atm) */
1696
1697#if EV_USE_FLOOR
1698# include <math.h>
1699# define ev_floor(v) floor (v)
1700#else
1701
1702#include <float.h>
1703
1704/* a floor() replacement function, should be independent of ev_tstamp type */
1705ecb_noinline
1706static ev_tstamp
1707ev_floor (ev_tstamp v)
1708{
1709 /* the choice of shift factor is not terribly important */
1710#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1711 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1712#else
1713 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1714#endif
1715
1716 /* argument too large for an unsigned long? */
1717 if (ecb_expect_false (v >= shift))
1718 {
1719 ev_tstamp f;
1720
1721 if (v == v - 1.)
1722 return v; /* very large number */
1723
1724 f = shift * ev_floor (v * (1. / shift));
1725 return f + ev_floor (v - f);
1726 }
1727
1728 /* special treatment for negative args? */
1729 if (ecb_expect_false (v < 0.))
1730 {
1731 ev_tstamp f = -ev_floor (-v);
1732
1733 return f - (f == v ? 0 : 1);
1734 }
1735
1736 /* fits into an unsigned long */
1737 return (unsigned long)v;
1738}
1739
1740#endif
1741
1742/*****************************************************************************/
1743
1744#ifdef __linux
1745# include <sys/utsname.h>
1746#endif
1747
1748ecb_noinline ecb_cold
1749static unsigned int
1750ev_linux_version (void)
1751{
1752#ifdef __linux
1753 unsigned int v = 0;
1754 struct utsname buf;
1755 int i;
1756 char *p = buf.release;
1757
1758 if (uname (&buf))
1759 return 0;
1760
1761 for (i = 3+1; --i; )
1762 {
1763 unsigned int c = 0;
1764
1765 for (;;)
1766 {
1767 if (*p >= '0' && *p <= '9')
1768 c = c * 10 + *p++ - '0';
1769 else
1770 {
1771 p += *p == '.';
1772 break;
1773 }
1774 }
1775
1776 v = (v << 8) | c;
1777 }
1778
1779 return v;
1780#else
1781 return 0;
1782#endif
1783}
1784
1785/*****************************************************************************/
1786
1787#if EV_AVOID_STDIO
1788ecb_noinline ecb_cold
1789static void
1790ev_printerr (const char *msg)
1791{
1792 write (STDERR_FILENO, msg, strlen (msg));
1793}
1794#endif
1795
483static void (*syserr_cb)(const char *msg); 1796static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
484 1797
1798ecb_cold
485void 1799void
486ev_set_syserr_cb (void (*cb)(const char *msg)) 1800ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
487{ 1801{
488 syserr_cb = cb; 1802 syserr_cb = cb;
489} 1803}
490 1804
491static void noinline 1805ecb_noinline ecb_cold
1806static void
492ev_syserr (const char *msg) 1807ev_syserr (const char *msg)
493{ 1808{
494 if (!msg) 1809 if (!msg)
495 msg = "(libev) system error"; 1810 msg = "(libev) system error";
496 1811
497 if (syserr_cb) 1812 if (syserr_cb)
498 syserr_cb (msg); 1813 syserr_cb (msg);
499 else 1814 else
500 { 1815 {
1816#if EV_AVOID_STDIO
1817 ev_printerr (msg);
1818 ev_printerr (": ");
1819 ev_printerr (strerror (errno));
1820 ev_printerr ("\n");
1821#else
501 perror (msg); 1822 perror (msg);
1823#endif
502 abort (); 1824 abort ();
503 } 1825 }
504} 1826}
505 1827
506static void * 1828static void *
507ev_realloc_emul (void *ptr, long size) 1829ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
508{ 1830{
509 /* some systems, notably openbsd and darwin, fail to properly 1831 /* some systems, notably openbsd and darwin, fail to properly
510 * implement realloc (x, 0) (as required by both ansi c-98 and 1832 * implement realloc (x, 0) (as required by both ansi c-89 and
511 * the single unix specification, so work around them here. 1833 * the single unix specification, so work around them here.
1834 * recently, also (at least) fedora and debian started breaking it,
1835 * despite documenting it otherwise.
512 */ 1836 */
513 1837
514 if (size) 1838 if (size)
515 return realloc (ptr, size); 1839 return realloc (ptr, size);
516 1840
517 free (ptr); 1841 free (ptr);
518 return 0; 1842 return 0;
519} 1843}
520 1844
521static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1845static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
522 1846
1847ecb_cold
523void 1848void
524ev_set_allocator (void *(*cb)(void *ptr, long size)) 1849ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
525{ 1850{
526 alloc = cb; 1851 alloc = cb;
527} 1852}
528 1853
529inline_speed void * 1854inline_speed void *
… …
531{ 1856{
532 ptr = alloc (ptr, size); 1857 ptr = alloc (ptr, size);
533 1858
534 if (!ptr && size) 1859 if (!ptr && size)
535 { 1860 {
1861#if EV_AVOID_STDIO
1862 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1863#else
536 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1864 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1865#endif
537 abort (); 1866 abort ();
538 } 1867 }
539 1868
540 return ptr; 1869 return ptr;
541} 1870}
… …
552typedef struct 1881typedef struct
553{ 1882{
554 WL head; 1883 WL head;
555 unsigned char events; /* the events watched for */ 1884 unsigned char events; /* the events watched for */
556 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */ 1885 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
557 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1886 unsigned char emask; /* some backends store the actual kernel mask in here */
558 unsigned char unused; 1887 unsigned char unused;
559#if EV_USE_EPOLL 1888#if EV_USE_EPOLL
560 unsigned int egen; /* generation counter to counter epoll bugs */ 1889 unsigned int egen; /* generation counter to counter epoll bugs */
561#endif 1890#endif
562#if EV_SELECT_IS_WINSOCKET 1891#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
563 SOCKET handle; 1892 SOCKET handle;
1893#endif
1894#if EV_USE_IOCP
1895 OVERLAPPED or, ow;
564#endif 1896#endif
565} ANFD; 1897} ANFD;
566 1898
567/* stores the pending event set for a given watcher */ 1899/* stores the pending event set for a given watcher */
568typedef struct 1900typedef struct
… …
610 #undef VAR 1942 #undef VAR
611 }; 1943 };
612 #include "ev_wrap.h" 1944 #include "ev_wrap.h"
613 1945
614 static struct ev_loop default_loop_struct; 1946 static struct ev_loop default_loop_struct;
615 struct ev_loop *ev_default_loop_ptr; 1947 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
616 1948
617#else 1949#else
618 1950
619 ev_tstamp ev_rt_now; 1951 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
620 #define VAR(name,decl) static decl; 1952 #define VAR(name,decl) static decl;
621 #include "ev_vars.h" 1953 #include "ev_vars.h"
622 #undef VAR 1954 #undef VAR
623 1955
624 static int ev_default_loop_ptr; 1956 static int ev_default_loop_ptr;
625 1957
626#endif 1958#endif
627 1959
628#if EV_MINIMAL < 2 1960#if EV_FEATURE_API
629# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 1961# define EV_RELEASE_CB if (ecb_expect_false (release_cb)) release_cb (EV_A)
630# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 1962# define EV_ACQUIRE_CB if (ecb_expect_false (acquire_cb)) acquire_cb (EV_A)
631# define EV_INVOKE_PENDING invoke_cb (EV_A) 1963# define EV_INVOKE_PENDING invoke_cb (EV_A)
632#else 1964#else
633# define EV_RELEASE_CB (void)0 1965# define EV_RELEASE_CB (void)0
634# define EV_ACQUIRE_CB (void)0 1966# define EV_ACQUIRE_CB (void)0
635# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1967# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
636#endif 1968#endif
637 1969
638#define EVUNLOOP_RECURSE 0x80 1970#define EVBREAK_RECURSE 0x80
639 1971
640/*****************************************************************************/ 1972/*****************************************************************************/
641 1973
642#ifndef EV_HAVE_EV_TIME 1974#ifndef EV_HAVE_EV_TIME
643ev_tstamp 1975ev_tstamp
644ev_time (void) 1976ev_time (void) EV_NOEXCEPT
645{ 1977{
646#if EV_USE_REALTIME 1978#if EV_USE_REALTIME
647 if (expect_true (have_realtime)) 1979 if (ecb_expect_true (have_realtime))
648 { 1980 {
649 struct timespec ts; 1981 struct timespec ts;
650 clock_gettime (CLOCK_REALTIME, &ts); 1982 clock_gettime (CLOCK_REALTIME, &ts);
651 return ts.tv_sec + ts.tv_nsec * 1e-9; 1983 return ts.tv_sec + ts.tv_nsec * 1e-9;
652 } 1984 }
… …
660 1992
661inline_size ev_tstamp 1993inline_size ev_tstamp
662get_clock (void) 1994get_clock (void)
663{ 1995{
664#if EV_USE_MONOTONIC 1996#if EV_USE_MONOTONIC
665 if (expect_true (have_monotonic)) 1997 if (ecb_expect_true (have_monotonic))
666 { 1998 {
667 struct timespec ts; 1999 struct timespec ts;
668 clock_gettime (CLOCK_MONOTONIC, &ts); 2000 clock_gettime (CLOCK_MONOTONIC, &ts);
669 return ts.tv_sec + ts.tv_nsec * 1e-9; 2001 return ts.tv_sec + ts.tv_nsec * 1e-9;
670 } 2002 }
… …
673 return ev_time (); 2005 return ev_time ();
674} 2006}
675 2007
676#if EV_MULTIPLICITY 2008#if EV_MULTIPLICITY
677ev_tstamp 2009ev_tstamp
678ev_now (EV_P) 2010ev_now (EV_P) EV_NOEXCEPT
679{ 2011{
680 return ev_rt_now; 2012 return ev_rt_now;
681} 2013}
682#endif 2014#endif
683 2015
684void 2016void
685ev_sleep (ev_tstamp delay) 2017ev_sleep (ev_tstamp delay) EV_NOEXCEPT
686{ 2018{
687 if (delay > 0.) 2019 if (delay > 0.)
688 { 2020 {
689#if EV_USE_NANOSLEEP 2021#if EV_USE_NANOSLEEP
690 struct timespec ts; 2022 struct timespec ts;
691 2023
692 ts.tv_sec = (time_t)delay; 2024 EV_TS_SET (ts, delay);
693 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
694
695 nanosleep (&ts, 0); 2025 nanosleep (&ts, 0);
696#elif defined(_WIN32) 2026#elif defined _WIN32
2027 /* maybe this should round up, as ms is very low resolution */
2028 /* compared to select (µs) or nanosleep (ns) */
697 Sleep ((unsigned long)(delay * 1e3)); 2029 Sleep ((unsigned long)(delay * 1e3));
698#else 2030#else
699 struct timeval tv; 2031 struct timeval tv;
700
701 tv.tv_sec = (time_t)delay;
702 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
703 2032
704 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 2033 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
705 /* something not guaranteed by newer posix versions, but guaranteed */ 2034 /* something not guaranteed by newer posix versions, but guaranteed */
706 /* by older ones */ 2035 /* by older ones */
2036 EV_TV_SET (tv, delay);
707 select (0, 0, 0, 0, &tv); 2037 select (0, 0, 0, 0, &tv);
708#endif 2038#endif
709 } 2039 }
710} 2040}
711 2041
712/*****************************************************************************/ 2042/*****************************************************************************/
713 2043
714#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 2044#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
715 2045
716/* find a suitable new size for the given array, */ 2046/* find a suitable new size for the given array, */
717/* hopefully by rounding to a ncie-to-malloc size */ 2047/* hopefully by rounding to a nice-to-malloc size */
718inline_size int 2048inline_size int
719array_nextsize (int elem, int cur, int cnt) 2049array_nextsize (int elem, int cur, int cnt)
720{ 2050{
721 int ncur = cur + 1; 2051 int ncur = cur + 1;
722 2052
723 do 2053 do
724 ncur <<= 1; 2054 ncur <<= 1;
725 while (cnt > ncur); 2055 while (cnt > ncur);
726 2056
727 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 2057 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
728 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 2058 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
729 { 2059 {
730 ncur *= elem; 2060 ncur *= elem;
731 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 2061 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
732 ncur = ncur - sizeof (void *) * 4; 2062 ncur = ncur - sizeof (void *) * 4;
… …
734 } 2064 }
735 2065
736 return ncur; 2066 return ncur;
737} 2067}
738 2068
739static noinline void * 2069ecb_noinline ecb_cold
2070static void *
740array_realloc (int elem, void *base, int *cur, int cnt) 2071array_realloc (int elem, void *base, int *cur, int cnt)
741{ 2072{
742 *cur = array_nextsize (elem, *cur, cnt); 2073 *cur = array_nextsize (elem, *cur, cnt);
743 return ev_realloc (base, elem * *cur); 2074 return ev_realloc (base, elem * *cur);
744} 2075}
745 2076
2077#define array_needsize_noinit(base,offset,count)
2078
746#define array_init_zero(base,count) \ 2079#define array_needsize_zerofill(base,offset,count) \
747 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 2080 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
748 2081
749#define array_needsize(type,base,cur,cnt,init) \ 2082#define array_needsize(type,base,cur,cnt,init) \
750 if (expect_false ((cnt) > (cur))) \ 2083 if (ecb_expect_false ((cnt) > (cur))) \
751 { \ 2084 { \
752 int ocur_ = (cur); \ 2085 ecb_unused int ocur_ = (cur); \
753 (base) = (type *)array_realloc \ 2086 (base) = (type *)array_realloc \
754 (sizeof (type), (base), &(cur), (cnt)); \ 2087 (sizeof (type), (base), &(cur), (cnt)); \
755 init ((base) + (ocur_), (cur) - ocur_); \ 2088 init ((base), ocur_, ((cur) - ocur_)); \
756 } 2089 }
757 2090
758#if 0 2091#if 0
759#define array_slim(type,stem) \ 2092#define array_slim(type,stem) \
760 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2093 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
… …
769 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 2102 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
770 2103
771/*****************************************************************************/ 2104/*****************************************************************************/
772 2105
773/* dummy callback for pending events */ 2106/* dummy callback for pending events */
774static void noinline 2107ecb_noinline
2108static void
775pendingcb (EV_P_ ev_prepare *w, int revents) 2109pendingcb (EV_P_ ev_prepare *w, int revents)
776{ 2110{
777} 2111}
778 2112
779void noinline 2113ecb_noinline
2114void
780ev_feed_event (EV_P_ void *w, int revents) 2115ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
781{ 2116{
782 W w_ = (W)w; 2117 W w_ = (W)w;
783 int pri = ABSPRI (w_); 2118 int pri = ABSPRI (w_);
784 2119
785 if (expect_false (w_->pending)) 2120 if (ecb_expect_false (w_->pending))
786 pendings [pri][w_->pending - 1].events |= revents; 2121 pendings [pri][w_->pending - 1].events |= revents;
787 else 2122 else
788 { 2123 {
789 w_->pending = ++pendingcnt [pri]; 2124 w_->pending = ++pendingcnt [pri];
790 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2125 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
791 pendings [pri][w_->pending - 1].w = w_; 2126 pendings [pri][w_->pending - 1].w = w_;
792 pendings [pri][w_->pending - 1].events = revents; 2127 pendings [pri][w_->pending - 1].events = revents;
793 } 2128 }
2129
2130 pendingpri = NUMPRI - 1;
794} 2131}
795 2132
796inline_speed void 2133inline_speed void
797feed_reverse (EV_P_ W w) 2134feed_reverse (EV_P_ W w)
798{ 2135{
799 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2136 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
800 rfeeds [rfeedcnt++] = w; 2137 rfeeds [rfeedcnt++] = w;
801} 2138}
802 2139
803inline_size void 2140inline_size void
804feed_reverse_done (EV_P_ int revents) 2141feed_reverse_done (EV_P_ int revents)
… …
818} 2155}
819 2156
820/*****************************************************************************/ 2157/*****************************************************************************/
821 2158
822inline_speed void 2159inline_speed void
823fd_event_nc (EV_P_ int fd, int revents) 2160fd_event_nocheck (EV_P_ int fd, int revents)
824{ 2161{
825 ANFD *anfd = anfds + fd; 2162 ANFD *anfd = anfds + fd;
826 ev_io *w; 2163 ev_io *w;
827 2164
828 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2165 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
839inline_speed void 2176inline_speed void
840fd_event (EV_P_ int fd, int revents) 2177fd_event (EV_P_ int fd, int revents)
841{ 2178{
842 ANFD *anfd = anfds + fd; 2179 ANFD *anfd = anfds + fd;
843 2180
844 if (expect_true (!anfd->reify)) 2181 if (ecb_expect_true (!anfd->reify))
845 fd_event_nc (EV_A_ fd, revents); 2182 fd_event_nocheck (EV_A_ fd, revents);
846} 2183}
847 2184
848void 2185void
849ev_feed_fd_event (EV_P_ int fd, int revents) 2186ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
850{ 2187{
851 if (fd >= 0 && fd < anfdmax) 2188 if (fd >= 0 && fd < anfdmax)
852 fd_event_nc (EV_A_ fd, revents); 2189 fd_event_nocheck (EV_A_ fd, revents);
853} 2190}
854 2191
855/* make sure the external fd watch events are in-sync */ 2192/* make sure the external fd watch events are in-sync */
856/* with the kernel/libev internal state */ 2193/* with the kernel/libev internal state */
857inline_size void 2194inline_size void
858fd_reify (EV_P) 2195fd_reify (EV_P)
859{ 2196{
860 int i; 2197 int i;
861 2198
2199#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
2200 for (i = 0; i < fdchangecnt; ++i)
2201 {
2202 int fd = fdchanges [i];
2203 ANFD *anfd = anfds + fd;
2204
2205 if (anfd->reify & EV__IOFDSET && anfd->head)
2206 {
2207 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
2208
2209 if (handle != anfd->handle)
2210 {
2211 unsigned long arg;
2212
2213 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
2214
2215 /* handle changed, but fd didn't - we need to do it in two steps */
2216 backend_modify (EV_A_ fd, anfd->events, 0);
2217 anfd->events = 0;
2218 anfd->handle = handle;
2219 }
2220 }
2221 }
2222#endif
2223
862 for (i = 0; i < fdchangecnt; ++i) 2224 for (i = 0; i < fdchangecnt; ++i)
863 { 2225 {
864 int fd = fdchanges [i]; 2226 int fd = fdchanges [i];
865 ANFD *anfd = anfds + fd; 2227 ANFD *anfd = anfds + fd;
866 ev_io *w; 2228 ev_io *w;
867 2229
868 unsigned char events = 0; 2230 unsigned char o_events = anfd->events;
2231 unsigned char o_reify = anfd->reify;
869 2232
870 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2233 anfd->reify = 0;
871 events |= (unsigned char)w->events;
872 2234
873#if EV_SELECT_IS_WINSOCKET 2235 /*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
874 if (events)
875 { 2236 {
876 unsigned long arg; 2237 anfd->events = 0;
877 #ifdef EV_FD_TO_WIN32_HANDLE 2238
878 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 2239 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
879 #else 2240 anfd->events |= (unsigned char)w->events;
880 anfd->handle = _get_osfhandle (fd); 2241
881 #endif 2242 if (o_events != anfd->events)
882 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 2243 o_reify = EV__IOFDSET; /* actually |= */
883 } 2244 }
884#endif
885 2245
886 { 2246 if (o_reify & EV__IOFDSET)
887 unsigned char o_events = anfd->events;
888 unsigned char o_reify = anfd->reify;
889
890 anfd->reify = 0;
891 anfd->events = events;
892
893 if (o_events != events || o_reify & EV__IOFDSET)
894 backend_modify (EV_A_ fd, o_events, events); 2247 backend_modify (EV_A_ fd, o_events, anfd->events);
895 }
896 } 2248 }
897 2249
898 fdchangecnt = 0; 2250 fdchangecnt = 0;
899} 2251}
900 2252
901/* something about the given fd changed */ 2253/* something about the given fd changed */
902inline_size void 2254inline_size
2255void
903fd_change (EV_P_ int fd, int flags) 2256fd_change (EV_P_ int fd, int flags)
904{ 2257{
905 unsigned char reify = anfds [fd].reify; 2258 unsigned char reify = anfds [fd].reify;
906 anfds [fd].reify |= flags; 2259 anfds [fd].reify |= flags;
907 2260
908 if (expect_true (!reify)) 2261 if (ecb_expect_true (!reify))
909 { 2262 {
910 ++fdchangecnt; 2263 ++fdchangecnt;
911 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2264 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
912 fdchanges [fdchangecnt - 1] = fd; 2265 fdchanges [fdchangecnt - 1] = fd;
913 } 2266 }
914} 2267}
915 2268
916/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2269/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
917inline_speed void 2270inline_speed ecb_cold void
918fd_kill (EV_P_ int fd) 2271fd_kill (EV_P_ int fd)
919{ 2272{
920 ev_io *w; 2273 ev_io *w;
921 2274
922 while ((w = (ev_io *)anfds [fd].head)) 2275 while ((w = (ev_io *)anfds [fd].head))
… …
924 ev_io_stop (EV_A_ w); 2277 ev_io_stop (EV_A_ w);
925 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2278 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
926 } 2279 }
927} 2280}
928 2281
929/* check whether the given fd is atcually valid, for error recovery */ 2282/* check whether the given fd is actually valid, for error recovery */
930inline_size int 2283inline_size ecb_cold int
931fd_valid (int fd) 2284fd_valid (int fd)
932{ 2285{
933#ifdef _WIN32 2286#ifdef _WIN32
934 return _get_osfhandle (fd) != -1; 2287 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
935#else 2288#else
936 return fcntl (fd, F_GETFD) != -1; 2289 return fcntl (fd, F_GETFD) != -1;
937#endif 2290#endif
938} 2291}
939 2292
940/* called on EBADF to verify fds */ 2293/* called on EBADF to verify fds */
941static void noinline 2294ecb_noinline ecb_cold
2295static void
942fd_ebadf (EV_P) 2296fd_ebadf (EV_P)
943{ 2297{
944 int fd; 2298 int fd;
945 2299
946 for (fd = 0; fd < anfdmax; ++fd) 2300 for (fd = 0; fd < anfdmax; ++fd)
… …
948 if (!fd_valid (fd) && errno == EBADF) 2302 if (!fd_valid (fd) && errno == EBADF)
949 fd_kill (EV_A_ fd); 2303 fd_kill (EV_A_ fd);
950} 2304}
951 2305
952/* called on ENOMEM in select/poll to kill some fds and retry */ 2306/* called on ENOMEM in select/poll to kill some fds and retry */
953static void noinline 2307ecb_noinline ecb_cold
2308static void
954fd_enomem (EV_P) 2309fd_enomem (EV_P)
955{ 2310{
956 int fd; 2311 int fd;
957 2312
958 for (fd = anfdmax; fd--; ) 2313 for (fd = anfdmax; fd--; )
… …
962 break; 2317 break;
963 } 2318 }
964} 2319}
965 2320
966/* usually called after fork if backend needs to re-arm all fds from scratch */ 2321/* usually called after fork if backend needs to re-arm all fds from scratch */
967static void noinline 2322ecb_noinline
2323static void
968fd_rearm_all (EV_P) 2324fd_rearm_all (EV_P)
969{ 2325{
970 int fd; 2326 int fd;
971 2327
972 for (fd = 0; fd < anfdmax; ++fd) 2328 for (fd = 0; fd < anfdmax; ++fd)
… …
976 anfds [fd].emask = 0; 2332 anfds [fd].emask = 0;
977 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); 2333 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
978 } 2334 }
979} 2335}
980 2336
2337/* used to prepare libev internal fd's */
2338/* this is not fork-safe */
2339inline_speed void
2340fd_intern (int fd)
2341{
2342#ifdef _WIN32
2343 unsigned long arg = 1;
2344 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
2345#else
2346 fcntl (fd, F_SETFD, FD_CLOEXEC);
2347 fcntl (fd, F_SETFL, O_NONBLOCK);
2348#endif
2349}
2350
981/*****************************************************************************/ 2351/*****************************************************************************/
982 2352
983/* 2353/*
984 * the heap functions want a real array index. array index 0 uis guaranteed to not 2354 * the heap functions want a real array index. array index 0 is guaranteed to not
985 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 2355 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
986 * the branching factor of the d-tree. 2356 * the branching factor of the d-tree.
987 */ 2357 */
988 2358
989/* 2359/*
… …
1011 ev_tstamp minat; 2381 ev_tstamp minat;
1012 ANHE *minpos; 2382 ANHE *minpos;
1013 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; 2383 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
1014 2384
1015 /* find minimum child */ 2385 /* find minimum child */
1016 if (expect_true (pos + DHEAP - 1 < E)) 2386 if (ecb_expect_true (pos + DHEAP - 1 < E))
1017 { 2387 {
1018 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2388 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1019 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2389 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1020 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2390 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1021 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2391 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
… …
1137 2507
1138static ANSIG signals [EV_NSIG - 1]; 2508static ANSIG signals [EV_NSIG - 1];
1139 2509
1140/*****************************************************************************/ 2510/*****************************************************************************/
1141 2511
1142/* used to prepare libev internal fd's */ 2512#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1143/* this is not fork-safe */ 2513
2514ecb_noinline ecb_cold
2515static void
2516evpipe_init (EV_P)
2517{
2518 if (!ev_is_active (&pipe_w))
2519 {
2520 int fds [2];
2521
2522# if EV_USE_EVENTFD
2523 fds [0] = -1;
2524 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
2525 if (fds [1] < 0 && errno == EINVAL)
2526 fds [1] = eventfd (0, 0);
2527
2528 if (fds [1] < 0)
2529# endif
2530 {
2531 while (pipe (fds))
2532 ev_syserr ("(libev) error creating signal/async pipe");
2533
2534 fd_intern (fds [0]);
2535 }
2536
2537 evpipe [0] = fds [0];
2538
2539 if (evpipe [1] < 0)
2540 evpipe [1] = fds [1]; /* first call, set write fd */
2541 else
2542 {
2543 /* on subsequent calls, do not change evpipe [1] */
2544 /* so that evpipe_write can always rely on its value. */
2545 /* this branch does not do anything sensible on windows, */
2546 /* so must not be executed on windows */
2547
2548 dup2 (fds [1], evpipe [1]);
2549 close (fds [1]);
2550 }
2551
2552 fd_intern (evpipe [1]);
2553
2554 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2555 ev_io_start (EV_A_ &pipe_w);
2556 ev_unref (EV_A); /* watcher should not keep loop alive */
2557 }
2558}
2559
1144inline_speed void 2560inline_speed void
1145fd_intern (int fd) 2561evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1146{ 2562{
1147#ifdef _WIN32 2563 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1148 unsigned long arg = 1;
1149 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1150#else
1151 fcntl (fd, F_SETFD, FD_CLOEXEC);
1152 fcntl (fd, F_SETFL, O_NONBLOCK);
1153#endif
1154}
1155 2564
1156static void noinline 2565 if (ecb_expect_true (*flag))
1157evpipe_init (EV_P) 2566 return;
1158{ 2567
1159 if (!ev_is_active (&pipe_w)) 2568 *flag = 1;
2569 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2570
2571 pipe_write_skipped = 1;
2572
2573 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2574
2575 if (pipe_write_wanted)
1160 { 2576 {
2577 int old_errno;
2578
2579 pipe_write_skipped = 0;
2580 ECB_MEMORY_FENCE_RELEASE;
2581
2582 old_errno = errno; /* save errno because write will clobber it */
2583
1161#if EV_USE_EVENTFD 2584#if EV_USE_EVENTFD
1162 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2585 if (evpipe [0] < 0)
1163 if (evfd < 0 && errno == EINVAL)
1164 evfd = eventfd (0, 0);
1165
1166 if (evfd >= 0)
1167 { 2586 {
1168 evpipe [0] = -1; 2587 uint64_t counter = 1;
1169 fd_intern (evfd); /* doing it twice doesn't hurt */ 2588 write (evpipe [1], &counter, sizeof (uint64_t));
1170 ev_io_set (&pipe_w, evfd, EV_READ);
1171 } 2589 }
1172 else 2590 else
1173#endif 2591#endif
1174 { 2592 {
1175 while (pipe (evpipe)) 2593#ifdef _WIN32
1176 ev_syserr ("(libev) error creating signal/async pipe"); 2594 WSABUF buf;
1177 2595 DWORD sent;
1178 fd_intern (evpipe [0]); 2596 buf.buf = (char *)&buf;
1179 fd_intern (evpipe [1]); 2597 buf.len = 1;
1180 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2598 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2599#else
2600 write (evpipe [1], &(evpipe [1]), 1);
2601#endif
1181 } 2602 }
1182
1183 ev_io_start (EV_A_ &pipe_w);
1184 ev_unref (EV_A); /* watcher should not keep loop alive */
1185 }
1186}
1187
1188inline_size void
1189evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1190{
1191 if (!*flag)
1192 {
1193 int old_errno = errno; /* save errno because write might clobber it */
1194
1195 *flag = 1;
1196
1197#if EV_USE_EVENTFD
1198 if (evfd >= 0)
1199 {
1200 uint64_t counter = 1;
1201 write (evfd, &counter, sizeof (uint64_t));
1202 }
1203 else
1204#endif
1205 write (evpipe [1], &old_errno, 1);
1206 2603
1207 errno = old_errno; 2604 errno = old_errno;
1208 } 2605 }
1209} 2606}
1210 2607
… …
1213static void 2610static void
1214pipecb (EV_P_ ev_io *iow, int revents) 2611pipecb (EV_P_ ev_io *iow, int revents)
1215{ 2612{
1216 int i; 2613 int i;
1217 2614
2615 if (revents & EV_READ)
2616 {
1218#if EV_USE_EVENTFD 2617#if EV_USE_EVENTFD
1219 if (evfd >= 0) 2618 if (evpipe [0] < 0)
1220 { 2619 {
1221 uint64_t counter; 2620 uint64_t counter;
1222 read (evfd, &counter, sizeof (uint64_t)); 2621 read (evpipe [1], &counter, sizeof (uint64_t));
1223 } 2622 }
1224 else 2623 else
1225#endif 2624#endif
1226 { 2625 {
1227 char dummy; 2626 char dummy[4];
2627#ifdef _WIN32
2628 WSABUF buf;
2629 DWORD recvd;
2630 DWORD flags = 0;
2631 buf.buf = dummy;
2632 buf.len = sizeof (dummy);
2633 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2634#else
1228 read (evpipe [0], &dummy, 1); 2635 read (evpipe [0], &dummy, sizeof (dummy));
2636#endif
2637 }
1229 } 2638 }
1230 2639
2640 pipe_write_skipped = 0;
2641
2642 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2643
2644#if EV_SIGNAL_ENABLE
1231 if (sig_pending) 2645 if (sig_pending)
1232 { 2646 {
1233 sig_pending = 0; 2647 sig_pending = 0;
1234 2648
2649 ECB_MEMORY_FENCE;
2650
1235 for (i = EV_NSIG - 1; i--; ) 2651 for (i = EV_NSIG - 1; i--; )
1236 if (expect_false (signals [i].pending)) 2652 if (ecb_expect_false (signals [i].pending))
1237 ev_feed_signal_event (EV_A_ i + 1); 2653 ev_feed_signal_event (EV_A_ i + 1);
1238 } 2654 }
2655#endif
1239 2656
1240#if EV_ASYNC_ENABLE 2657#if EV_ASYNC_ENABLE
1241 if (async_pending) 2658 if (async_pending)
1242 { 2659 {
1243 async_pending = 0; 2660 async_pending = 0;
2661
2662 ECB_MEMORY_FENCE;
1244 2663
1245 for (i = asynccnt; i--; ) 2664 for (i = asynccnt; i--; )
1246 if (asyncs [i]->sent) 2665 if (asyncs [i]->sent)
1247 { 2666 {
1248 asyncs [i]->sent = 0; 2667 asyncs [i]->sent = 0;
2668 ECB_MEMORY_FENCE_RELEASE;
1249 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2669 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1250 } 2670 }
1251 } 2671 }
1252#endif 2672#endif
1253} 2673}
1254 2674
1255/*****************************************************************************/ 2675/*****************************************************************************/
1256 2676
2677void
2678ev_feed_signal (int signum) EV_NOEXCEPT
2679{
2680#if EV_MULTIPLICITY
2681 EV_P;
2682 ECB_MEMORY_FENCE_ACQUIRE;
2683 EV_A = signals [signum - 1].loop;
2684
2685 if (!EV_A)
2686 return;
2687#endif
2688
2689 signals [signum - 1].pending = 1;
2690 evpipe_write (EV_A_ &sig_pending);
2691}
2692
1257static void 2693static void
1258ev_sighandler (int signum) 2694ev_sighandler (int signum)
1259{ 2695{
1260#if EV_MULTIPLICITY
1261 EV_P = signals [signum - 1].loop;
1262#endif
1263
1264#if _WIN32 2696#ifdef _WIN32
1265 signal (signum, ev_sighandler); 2697 signal (signum, ev_sighandler);
1266#endif 2698#endif
1267 2699
1268 signals [signum - 1].pending = 1; 2700 ev_feed_signal (signum);
1269 evpipe_write (EV_A_ &sig_pending);
1270} 2701}
1271 2702
1272void noinline 2703ecb_noinline
2704void
1273ev_feed_signal_event (EV_P_ int signum) 2705ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
1274{ 2706{
1275 WL w; 2707 WL w;
1276 2708
1277 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2709 if (ecb_expect_false (signum <= 0 || signum >= EV_NSIG))
1278 return; 2710 return;
1279 2711
1280 --signum; 2712 --signum;
1281 2713
1282#if EV_MULTIPLICITY 2714#if EV_MULTIPLICITY
1283 /* it is permissible to try to feed a signal to the wrong loop */ 2715 /* it is permissible to try to feed a signal to the wrong loop */
1284 /* or, likely more useful, feeding a signal nobody is waiting for */ 2716 /* or, likely more useful, feeding a signal nobody is waiting for */
1285 2717
1286 if (expect_false (signals [signum].loop != EV_A)) 2718 if (ecb_expect_false (signals [signum].loop != EV_A))
1287 return; 2719 return;
1288#endif 2720#endif
1289 2721
1290 signals [signum].pending = 0; 2722 signals [signum].pending = 0;
2723 ECB_MEMORY_FENCE_RELEASE;
1291 2724
1292 for (w = signals [signum].head; w; w = w->next) 2725 for (w = signals [signum].head; w; w = w->next)
1293 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2726 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1294} 2727}
1295 2728
… …
1311 break; 2744 break;
1312 } 2745 }
1313} 2746}
1314#endif 2747#endif
1315 2748
2749#endif
2750
1316/*****************************************************************************/ 2751/*****************************************************************************/
1317 2752
2753#if EV_CHILD_ENABLE
1318static WL childs [EV_PID_HASHSIZE]; 2754static WL childs [EV_PID_HASHSIZE];
1319
1320#ifndef _WIN32
1321 2755
1322static ev_signal childev; 2756static ev_signal childev;
1323 2757
1324#ifndef WIFCONTINUED 2758#ifndef WIFCONTINUED
1325# define WIFCONTINUED(status) 0 2759# define WIFCONTINUED(status) 0
… …
1330child_reap (EV_P_ int chain, int pid, int status) 2764child_reap (EV_P_ int chain, int pid, int status)
1331{ 2765{
1332 ev_child *w; 2766 ev_child *w;
1333 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2767 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1334 2768
1335 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2769 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1336 { 2770 {
1337 if ((w->pid == pid || !w->pid) 2771 if ((w->pid == pid || !w->pid)
1338 && (!traced || (w->flags & 1))) 2772 && (!traced || (w->flags & 1)))
1339 { 2773 {
1340 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2774 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1365 /* make sure we are called again until all children have been reaped */ 2799 /* make sure we are called again until all children have been reaped */
1366 /* we need to do it this way so that the callback gets called before we continue */ 2800 /* we need to do it this way so that the callback gets called before we continue */
1367 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2801 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1368 2802
1369 child_reap (EV_A_ pid, pid, status); 2803 child_reap (EV_A_ pid, pid, status);
1370 if (EV_PID_HASHSIZE > 1) 2804 if ((EV_PID_HASHSIZE) > 1)
1371 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2805 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1372} 2806}
1373 2807
1374#endif 2808#endif
1375 2809
1376/*****************************************************************************/ 2810/*****************************************************************************/
1377 2811
2812#if EV_USE_IOCP
2813# include "ev_iocp.c"
2814#endif
1378#if EV_USE_PORT 2815#if EV_USE_PORT
1379# include "ev_port.c" 2816# include "ev_port.c"
1380#endif 2817#endif
1381#if EV_USE_KQUEUE 2818#if EV_USE_KQUEUE
1382# include "ev_kqueue.c" 2819# include "ev_kqueue.c"
1383#endif 2820#endif
1384#if EV_USE_EPOLL 2821#if EV_USE_EPOLL
1385# include "ev_epoll.c" 2822# include "ev_epoll.c"
1386#endif 2823#endif
2824#if EV_USE_LINUXAIO
2825# include "ev_linuxaio.c"
2826#endif
2827#if EV_USE_IOURING
2828# include "ev_iouring.c"
2829#endif
1387#if EV_USE_POLL 2830#if EV_USE_POLL
1388# include "ev_poll.c" 2831# include "ev_poll.c"
1389#endif 2832#endif
1390#if EV_USE_SELECT 2833#if EV_USE_SELECT
1391# include "ev_select.c" 2834# include "ev_select.c"
1392#endif 2835#endif
1393 2836
1394int 2837ecb_cold int
1395ev_version_major (void) 2838ev_version_major (void) EV_NOEXCEPT
1396{ 2839{
1397 return EV_VERSION_MAJOR; 2840 return EV_VERSION_MAJOR;
1398} 2841}
1399 2842
1400int 2843ecb_cold int
1401ev_version_minor (void) 2844ev_version_minor (void) EV_NOEXCEPT
1402{ 2845{
1403 return EV_VERSION_MINOR; 2846 return EV_VERSION_MINOR;
1404} 2847}
1405 2848
1406/* return true if we are running with elevated privileges and should ignore env variables */ 2849/* return true if we are running with elevated privileges and should ignore env variables */
1407int inline_size 2850inline_size ecb_cold int
1408enable_secure (void) 2851enable_secure (void)
1409{ 2852{
1410#ifdef _WIN32 2853#ifdef _WIN32
1411 return 0; 2854 return 0;
1412#else 2855#else
1413 return getuid () != geteuid () 2856 return getuid () != geteuid ()
1414 || getgid () != getegid (); 2857 || getgid () != getegid ();
1415#endif 2858#endif
1416} 2859}
1417 2860
2861ecb_cold
1418unsigned int 2862unsigned int
1419ev_supported_backends (void) 2863ev_supported_backends (void) EV_NOEXCEPT
1420{ 2864{
1421 unsigned int flags = 0; 2865 unsigned int flags = 0;
1422 2866
1423 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2867 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1424 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2868 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
1425 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 2869 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2870 if (EV_USE_LINUXAIO) flags |= EVBACKEND_LINUXAIO;
2871 if (EV_USE_IOURING ) flags |= EVBACKEND_IOURING;
1426 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 2872 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
1427 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2873 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
1428 2874
1429 return flags; 2875 return flags;
1430} 2876}
1431 2877
2878ecb_cold
1432unsigned int 2879unsigned int
1433ev_recommended_backends (void) 2880ev_recommended_backends (void) EV_NOEXCEPT
1434{ 2881{
1435 unsigned int flags = ev_supported_backends (); 2882 unsigned int flags = ev_supported_backends ();
1436 2883
1437#ifndef __NetBSD__ 2884#ifndef __NetBSD__
1438 /* kqueue is borked on everything but netbsd apparently */ 2885 /* kqueue is borked on everything but netbsd apparently */
… …
1442#ifdef __APPLE__ 2889#ifdef __APPLE__
1443 /* only select works correctly on that "unix-certified" platform */ 2890 /* only select works correctly on that "unix-certified" platform */
1444 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2891 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1445 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 2892 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1446#endif 2893#endif
2894#ifdef __FreeBSD__
2895 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2896#endif
2897
2898 /* TODO: linuxaio is very experimental */
2899#if !EV_RECOMMEND_LINUXAIO
2900 flags &= ~EVBACKEND_LINUXAIO;
2901#endif
2902 /* TODO: linuxaio is super experimental */
2903#if !EV_RECOMMEND_IOURING
2904 flags &= ~EVBACKEND_IOURING;
2905#endif
1447 2906
1448 return flags; 2907 return flags;
1449} 2908}
1450 2909
2910ecb_cold
1451unsigned int 2911unsigned int
1452ev_embeddable_backends (void) 2912ev_embeddable_backends (void) EV_NOEXCEPT
1453{ 2913{
1454 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2914 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1455 2915
1456 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2916 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1457 /* please fix it and tell me how to detect the fix */ 2917 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1458 flags &= ~EVBACKEND_EPOLL; 2918 flags &= ~EVBACKEND_EPOLL;
1459 2919
1460 return flags; 2920 return flags;
1461} 2921}
1462 2922
1463unsigned int 2923unsigned int
1464ev_backend (EV_P) 2924ev_backend (EV_P) EV_NOEXCEPT
1465{ 2925{
1466 return backend; 2926 return backend;
1467} 2927}
1468 2928
1469#if EV_MINIMAL < 2 2929#if EV_FEATURE_API
1470unsigned int 2930unsigned int
1471ev_loop_count (EV_P) 2931ev_iteration (EV_P) EV_NOEXCEPT
1472{ 2932{
1473 return loop_count; 2933 return loop_count;
1474} 2934}
1475 2935
1476unsigned int 2936unsigned int
1477ev_loop_depth (EV_P) 2937ev_depth (EV_P) EV_NOEXCEPT
1478{ 2938{
1479 return loop_depth; 2939 return loop_depth;
1480} 2940}
1481 2941
1482void 2942void
1483ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2943ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1484{ 2944{
1485 io_blocktime = interval; 2945 io_blocktime = interval;
1486} 2946}
1487 2947
1488void 2948void
1489ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2949ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1490{ 2950{
1491 timeout_blocktime = interval; 2951 timeout_blocktime = interval;
1492} 2952}
1493 2953
1494void 2954void
1495ev_set_userdata (EV_P_ void *data) 2955ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
1496{ 2956{
1497 userdata = data; 2957 userdata = data;
1498} 2958}
1499 2959
1500void * 2960void *
1501ev_userdata (EV_P) 2961ev_userdata (EV_P) EV_NOEXCEPT
1502{ 2962{
1503 return userdata; 2963 return userdata;
1504} 2964}
1505 2965
2966void
1506void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2967ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
1507{ 2968{
1508 invoke_cb = invoke_pending_cb; 2969 invoke_cb = invoke_pending_cb;
1509} 2970}
1510 2971
2972void
1511void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2973ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
1512{ 2974{
1513 release_cb = release; 2975 release_cb = release;
1514 acquire_cb = acquire; 2976 acquire_cb = acquire;
1515} 2977}
1516#endif 2978#endif
1517 2979
1518/* initialise a loop structure, must be zero-initialised */ 2980/* initialise a loop structure, must be zero-initialised */
1519static void noinline 2981ecb_noinline ecb_cold
2982static void
1520loop_init (EV_P_ unsigned int flags) 2983loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
1521{ 2984{
1522 if (!backend) 2985 if (!backend)
1523 { 2986 {
2987 origflags = flags;
2988
1524#if EV_USE_REALTIME 2989#if EV_USE_REALTIME
1525 if (!have_realtime) 2990 if (!have_realtime)
1526 { 2991 {
1527 struct timespec ts; 2992 struct timespec ts;
1528 2993
… …
1550 if (!(flags & EVFLAG_NOENV) 3015 if (!(flags & EVFLAG_NOENV)
1551 && !enable_secure () 3016 && !enable_secure ()
1552 && getenv ("LIBEV_FLAGS")) 3017 && getenv ("LIBEV_FLAGS"))
1553 flags = atoi (getenv ("LIBEV_FLAGS")); 3018 flags = atoi (getenv ("LIBEV_FLAGS"));
1554 3019
1555 ev_rt_now = ev_time (); 3020 ev_rt_now = ev_time ();
1556 mn_now = get_clock (); 3021 mn_now = get_clock ();
1557 now_floor = mn_now; 3022 now_floor = mn_now;
1558 rtmn_diff = ev_rt_now - mn_now; 3023 rtmn_diff = ev_rt_now - mn_now;
1559#if EV_MINIMAL < 2 3024#if EV_FEATURE_API
1560 invoke_cb = ev_invoke_pending; 3025 invoke_cb = ev_invoke_pending;
1561#endif 3026#endif
1562 3027
1563 io_blocktime = 0.; 3028 io_blocktime = 0.;
1564 timeout_blocktime = 0.; 3029 timeout_blocktime = 0.;
1565 backend = 0; 3030 backend = 0;
1566 backend_fd = -1; 3031 backend_fd = -1;
1567 sig_pending = 0; 3032 sig_pending = 0;
1568#if EV_ASYNC_ENABLE 3033#if EV_ASYNC_ENABLE
1569 async_pending = 0; 3034 async_pending = 0;
1570#endif 3035#endif
3036 pipe_write_skipped = 0;
3037 pipe_write_wanted = 0;
3038 evpipe [0] = -1;
3039 evpipe [1] = -1;
1571#if EV_USE_INOTIFY 3040#if EV_USE_INOTIFY
1572 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 3041 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1573#endif 3042#endif
1574#if EV_USE_SIGNALFD 3043#if EV_USE_SIGNALFD
1575 sigfd = flags & EVFLAG_NOSIGFD ? -1 : -2; 3044 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1576#endif 3045#endif
1577 3046
1578 if (!(flags & 0x0000ffffU)) 3047 if (!(flags & EVBACKEND_MASK))
1579 flags |= ev_recommended_backends (); 3048 flags |= ev_recommended_backends ();
1580 3049
3050#if EV_USE_IOCP
3051 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
3052#endif
1581#if EV_USE_PORT 3053#if EV_USE_PORT
1582 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 3054 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1583#endif 3055#endif
1584#if EV_USE_KQUEUE 3056#if EV_USE_KQUEUE
1585 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 3057 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
3058#endif
3059#if EV_USE_IOURING
3060 if (!backend && (flags & EVBACKEND_IOURING )) backend = iouring_init (EV_A_ flags);
3061#endif
3062#if EV_USE_LINUXAIO
3063 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
1586#endif 3064#endif
1587#if EV_USE_EPOLL 3065#if EV_USE_EPOLL
1588 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 3066 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
1589#endif 3067#endif
1590#if EV_USE_POLL 3068#if EV_USE_POLL
1591 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 3069 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
1592#endif 3070#endif
1593#if EV_USE_SELECT 3071#if EV_USE_SELECT
1594 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 3072 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
1595#endif 3073#endif
1596 3074
1597 ev_prepare_init (&pending_w, pendingcb); 3075 ev_prepare_init (&pending_w, pendingcb);
1598 3076
3077#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1599 ev_init (&pipe_w, pipecb); 3078 ev_init (&pipe_w, pipecb);
1600 ev_set_priority (&pipe_w, EV_MAXPRI); 3079 ev_set_priority (&pipe_w, EV_MAXPRI);
3080#endif
1601 } 3081 }
1602} 3082}
1603 3083
1604/* free up a loop structure */ 3084/* free up a loop structure */
1605static void noinline 3085ecb_cold
3086void
1606loop_destroy (EV_P) 3087ev_loop_destroy (EV_P)
1607{ 3088{
1608 int i; 3089 int i;
3090
3091#if EV_MULTIPLICITY
3092 /* mimic free (0) */
3093 if (!EV_A)
3094 return;
3095#endif
3096
3097#if EV_CLEANUP_ENABLE
3098 /* queue cleanup watchers (and execute them) */
3099 if (ecb_expect_false (cleanupcnt))
3100 {
3101 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
3102 EV_INVOKE_PENDING;
3103 }
3104#endif
3105
3106#if EV_CHILD_ENABLE
3107 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
3108 {
3109 ev_ref (EV_A); /* child watcher */
3110 ev_signal_stop (EV_A_ &childev);
3111 }
3112#endif
1609 3113
1610 if (ev_is_active (&pipe_w)) 3114 if (ev_is_active (&pipe_w))
1611 { 3115 {
1612 /*ev_ref (EV_A);*/ 3116 /*ev_ref (EV_A);*/
1613 /*ev_io_stop (EV_A_ &pipe_w);*/ 3117 /*ev_io_stop (EV_A_ &pipe_w);*/
1614 3118
1615#if EV_USE_EVENTFD 3119 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1616 if (evfd >= 0) 3120 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1617 close (evfd);
1618#endif
1619
1620 if (evpipe [0] >= 0)
1621 {
1622 close (evpipe [0]);
1623 close (evpipe [1]);
1624 }
1625 } 3121 }
1626 3122
1627#if EV_USE_SIGNALFD 3123#if EV_USE_SIGNALFD
1628 if (ev_is_active (&sigfd_w)) 3124 if (ev_is_active (&sigfd_w))
1629 {
1630 /*ev_ref (EV_A);*/
1631 /*ev_io_stop (EV_A_ &sigfd_w);*/
1632
1633 close (sigfd); 3125 close (sigfd);
1634 }
1635#endif 3126#endif
1636 3127
1637#if EV_USE_INOTIFY 3128#if EV_USE_INOTIFY
1638 if (fs_fd >= 0) 3129 if (fs_fd >= 0)
1639 close (fs_fd); 3130 close (fs_fd);
1640#endif 3131#endif
1641 3132
1642 if (backend_fd >= 0) 3133 if (backend_fd >= 0)
1643 close (backend_fd); 3134 close (backend_fd);
1644 3135
3136#if EV_USE_IOCP
3137 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
3138#endif
1645#if EV_USE_PORT 3139#if EV_USE_PORT
1646 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3140 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1647#endif 3141#endif
1648#if EV_USE_KQUEUE 3142#if EV_USE_KQUEUE
1649 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3143 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
3144#endif
3145#if EV_USE_IOURING
3146 if (backend == EVBACKEND_IOURING ) iouring_destroy (EV_A);
3147#endif
3148#if EV_USE_LINUXAIO
3149 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
1650#endif 3150#endif
1651#if EV_USE_EPOLL 3151#if EV_USE_EPOLL
1652 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3152 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
1653#endif 3153#endif
1654#if EV_USE_POLL 3154#if EV_USE_POLL
1655 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3155 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
1656#endif 3156#endif
1657#if EV_USE_SELECT 3157#if EV_USE_SELECT
1658 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3158 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
1659#endif 3159#endif
1660 3160
1661 for (i = NUMPRI; i--; ) 3161 for (i = NUMPRI; i--; )
1662 { 3162 {
1663 array_free (pending, [i]); 3163 array_free (pending, [i]);
… …
1676 array_free (periodic, EMPTY); 3176 array_free (periodic, EMPTY);
1677#endif 3177#endif
1678#if EV_FORK_ENABLE 3178#if EV_FORK_ENABLE
1679 array_free (fork, EMPTY); 3179 array_free (fork, EMPTY);
1680#endif 3180#endif
3181#if EV_CLEANUP_ENABLE
3182 array_free (cleanup, EMPTY);
3183#endif
1681 array_free (prepare, EMPTY); 3184 array_free (prepare, EMPTY);
1682 array_free (check, EMPTY); 3185 array_free (check, EMPTY);
1683#if EV_ASYNC_ENABLE 3186#if EV_ASYNC_ENABLE
1684 array_free (async, EMPTY); 3187 array_free (async, EMPTY);
1685#endif 3188#endif
1686 3189
1687 backend = 0; 3190 backend = 0;
3191
3192#if EV_MULTIPLICITY
3193 if (ev_is_default_loop (EV_A))
3194#endif
3195 ev_default_loop_ptr = 0;
3196#if EV_MULTIPLICITY
3197 else
3198 ev_free (EV_A);
3199#endif
1688} 3200}
1689 3201
1690#if EV_USE_INOTIFY 3202#if EV_USE_INOTIFY
1691inline_size void infy_fork (EV_P); 3203inline_size void infy_fork (EV_P);
1692#endif 3204#endif
1693 3205
1694inline_size void 3206inline_size void
1695loop_fork (EV_P) 3207loop_fork (EV_P)
1696{ 3208{
1697#if EV_USE_PORT 3209#if EV_USE_PORT
1698 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3210 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1699#endif 3211#endif
1700#if EV_USE_KQUEUE 3212#if EV_USE_KQUEUE
1701 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 3213 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
3214#endif
3215#if EV_USE_IOURING
3216 if (backend == EVBACKEND_IOURING ) iouring_fork (EV_A);
3217#endif
3218#if EV_USE_LINUXAIO
3219 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
1702#endif 3220#endif
1703#if EV_USE_EPOLL 3221#if EV_USE_EPOLL
1704 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3222 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
1705#endif 3223#endif
1706#if EV_USE_INOTIFY 3224#if EV_USE_INOTIFY
1707 infy_fork (EV_A); 3225 infy_fork (EV_A);
1708#endif 3226#endif
1709 3227
3228#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1710 if (ev_is_active (&pipe_w)) 3229 if (ev_is_active (&pipe_w) && postfork != 2)
1711 { 3230 {
1712 /* this "locks" the handlers against writing to the pipe */ 3231 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1713 /* while we modify the fd vars */
1714 sig_pending = 1;
1715#if EV_ASYNC_ENABLE
1716 async_pending = 1;
1717#endif
1718 3232
1719 ev_ref (EV_A); 3233 ev_ref (EV_A);
1720 ev_io_stop (EV_A_ &pipe_w); 3234 ev_io_stop (EV_A_ &pipe_w);
1721 3235
1722#if EV_USE_EVENTFD
1723 if (evfd >= 0)
1724 close (evfd);
1725#endif
1726
1727 if (evpipe [0] >= 0) 3236 if (evpipe [0] >= 0)
1728 { 3237 EV_WIN32_CLOSE_FD (evpipe [0]);
1729 close (evpipe [0]);
1730 close (evpipe [1]);
1731 }
1732 3238
1733 evpipe_init (EV_A); 3239 evpipe_init (EV_A);
1734 /* now iterate over everything, in case we missed something */ 3240 /* iterate over everything, in case we missed something before */
1735 pipecb (EV_A_ &pipe_w, EV_READ); 3241 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1736 } 3242 }
3243#endif
1737 3244
1738 postfork = 0; 3245 postfork = 0;
1739} 3246}
1740 3247
1741#if EV_MULTIPLICITY 3248#if EV_MULTIPLICITY
1742 3249
3250ecb_cold
1743struct ev_loop * 3251struct ev_loop *
1744ev_loop_new (unsigned int flags) 3252ev_loop_new (unsigned int flags) EV_NOEXCEPT
1745{ 3253{
1746 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3254 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1747 3255
1748 memset (EV_A, 0, sizeof (struct ev_loop)); 3256 memset (EV_A, 0, sizeof (struct ev_loop));
1749 loop_init (EV_A_ flags); 3257 loop_init (EV_A_ flags);
1750 3258
1751 if (ev_backend (EV_A)) 3259 if (ev_backend (EV_A))
1752 return EV_A; 3260 return EV_A;
1753 3261
3262 ev_free (EV_A);
1754 return 0; 3263 return 0;
1755} 3264}
1756 3265
1757void
1758ev_loop_destroy (EV_P)
1759{
1760 loop_destroy (EV_A);
1761 ev_free (loop);
1762}
1763
1764void
1765ev_loop_fork (EV_P)
1766{
1767 postfork = 1; /* must be in line with ev_default_fork */
1768}
1769#endif /* multiplicity */ 3266#endif /* multiplicity */
1770 3267
1771#if EV_VERIFY 3268#if EV_VERIFY
1772static void noinline 3269ecb_noinline ecb_cold
3270static void
1773verify_watcher (EV_P_ W w) 3271verify_watcher (EV_P_ W w)
1774{ 3272{
1775 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3273 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1776 3274
1777 if (w->pending) 3275 if (w->pending)
1778 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3276 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1779} 3277}
1780 3278
1781static void noinline 3279ecb_noinline ecb_cold
3280static void
1782verify_heap (EV_P_ ANHE *heap, int N) 3281verify_heap (EV_P_ ANHE *heap, int N)
1783{ 3282{
1784 int i; 3283 int i;
1785 3284
1786 for (i = HEAP0; i < N + HEAP0; ++i) 3285 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1791 3290
1792 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3291 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1793 } 3292 }
1794} 3293}
1795 3294
1796static void noinline 3295ecb_noinline ecb_cold
3296static void
1797array_verify (EV_P_ W *ws, int cnt) 3297array_verify (EV_P_ W *ws, int cnt)
1798{ 3298{
1799 while (cnt--) 3299 while (cnt--)
1800 { 3300 {
1801 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3301 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1802 verify_watcher (EV_A_ ws [cnt]); 3302 verify_watcher (EV_A_ ws [cnt]);
1803 } 3303 }
1804} 3304}
1805#endif 3305#endif
1806 3306
1807#if EV_MINIMAL < 2 3307#if EV_FEATURE_API
1808void 3308void ecb_cold
1809ev_loop_verify (EV_P) 3309ev_verify (EV_P) EV_NOEXCEPT
1810{ 3310{
1811#if EV_VERIFY 3311#if EV_VERIFY
1812 int i; 3312 int i;
1813 WL w; 3313 WL w, w2;
1814 3314
1815 assert (activecnt >= -1); 3315 assert (activecnt >= -1);
1816 3316
1817 assert (fdchangemax >= fdchangecnt); 3317 assert (fdchangemax >= fdchangecnt);
1818 for (i = 0; i < fdchangecnt; ++i) 3318 for (i = 0; i < fdchangecnt; ++i)
1819 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3319 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1820 3320
1821 assert (anfdmax >= 0); 3321 assert (anfdmax >= 0);
1822 for (i = 0; i < anfdmax; ++i) 3322 for (i = 0; i < anfdmax; ++i)
3323 {
3324 int j = 0;
3325
1823 for (w = anfds [i].head; w; w = w->next) 3326 for (w = w2 = anfds [i].head; w; w = w->next)
1824 { 3327 {
1825 verify_watcher (EV_A_ (W)w); 3328 verify_watcher (EV_A_ (W)w);
3329
3330 if (j++ & 1)
3331 {
3332 assert (("libev: io watcher list contains a loop", w != w2));
3333 w2 = w2->next;
3334 }
3335
1826 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3336 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1827 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 3337 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1828 } 3338 }
3339 }
1829 3340
1830 assert (timermax >= timercnt); 3341 assert (timermax >= timercnt);
1831 verify_heap (EV_A_ timers, timercnt); 3342 verify_heap (EV_A_ timers, timercnt);
1832 3343
1833#if EV_PERIODIC_ENABLE 3344#if EV_PERIODIC_ENABLE
… …
1848#if EV_FORK_ENABLE 3359#if EV_FORK_ENABLE
1849 assert (forkmax >= forkcnt); 3360 assert (forkmax >= forkcnt);
1850 array_verify (EV_A_ (W *)forks, forkcnt); 3361 array_verify (EV_A_ (W *)forks, forkcnt);
1851#endif 3362#endif
1852 3363
3364#if EV_CLEANUP_ENABLE
3365 assert (cleanupmax >= cleanupcnt);
3366 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
3367#endif
3368
1853#if EV_ASYNC_ENABLE 3369#if EV_ASYNC_ENABLE
1854 assert (asyncmax >= asynccnt); 3370 assert (asyncmax >= asynccnt);
1855 array_verify (EV_A_ (W *)asyncs, asynccnt); 3371 array_verify (EV_A_ (W *)asyncs, asynccnt);
1856#endif 3372#endif
1857 3373
3374#if EV_PREPARE_ENABLE
1858 assert (preparemax >= preparecnt); 3375 assert (preparemax >= preparecnt);
1859 array_verify (EV_A_ (W *)prepares, preparecnt); 3376 array_verify (EV_A_ (W *)prepares, preparecnt);
3377#endif
1860 3378
3379#if EV_CHECK_ENABLE
1861 assert (checkmax >= checkcnt); 3380 assert (checkmax >= checkcnt);
1862 array_verify (EV_A_ (W *)checks, checkcnt); 3381 array_verify (EV_A_ (W *)checks, checkcnt);
3382#endif
1863 3383
1864# if 0 3384# if 0
3385#if EV_CHILD_ENABLE
1865 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 3386 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1866 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending) 3387 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
3388#endif
1867# endif 3389# endif
1868#endif 3390#endif
1869} 3391}
1870#endif 3392#endif
1871 3393
1872#if EV_MULTIPLICITY 3394#if EV_MULTIPLICITY
3395ecb_cold
1873struct ev_loop * 3396struct ev_loop *
1874ev_default_loop_init (unsigned int flags)
1875#else 3397#else
1876int 3398int
3399#endif
1877ev_default_loop (unsigned int flags) 3400ev_default_loop (unsigned int flags) EV_NOEXCEPT
1878#endif
1879{ 3401{
1880 if (!ev_default_loop_ptr) 3402 if (!ev_default_loop_ptr)
1881 { 3403 {
1882#if EV_MULTIPLICITY 3404#if EV_MULTIPLICITY
1883 EV_P = ev_default_loop_ptr = &default_loop_struct; 3405 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1887 3409
1888 loop_init (EV_A_ flags); 3410 loop_init (EV_A_ flags);
1889 3411
1890 if (ev_backend (EV_A)) 3412 if (ev_backend (EV_A))
1891 { 3413 {
1892#ifndef _WIN32 3414#if EV_CHILD_ENABLE
1893 ev_signal_init (&childev, childcb, SIGCHLD); 3415 ev_signal_init (&childev, childcb, SIGCHLD);
1894 ev_set_priority (&childev, EV_MAXPRI); 3416 ev_set_priority (&childev, EV_MAXPRI);
1895 ev_signal_start (EV_A_ &childev); 3417 ev_signal_start (EV_A_ &childev);
1896 ev_unref (EV_A); /* child watcher should not keep loop alive */ 3418 ev_unref (EV_A); /* child watcher should not keep loop alive */
1897#endif 3419#endif
… …
1902 3424
1903 return ev_default_loop_ptr; 3425 return ev_default_loop_ptr;
1904} 3426}
1905 3427
1906void 3428void
1907ev_default_destroy (void) 3429ev_loop_fork (EV_P) EV_NOEXCEPT
1908{ 3430{
1909#if EV_MULTIPLICITY 3431 postfork = 1;
1910 EV_P = ev_default_loop_ptr;
1911#endif
1912
1913 ev_default_loop_ptr = 0;
1914
1915#ifndef _WIN32
1916 ev_ref (EV_A); /* child watcher */
1917 ev_signal_stop (EV_A_ &childev);
1918#endif
1919
1920 loop_destroy (EV_A);
1921}
1922
1923void
1924ev_default_fork (void)
1925{
1926#if EV_MULTIPLICITY
1927 EV_P = ev_default_loop_ptr;
1928#endif
1929
1930 postfork = 1; /* must be in line with ev_loop_fork */
1931} 3432}
1932 3433
1933/*****************************************************************************/ 3434/*****************************************************************************/
1934 3435
1935void 3436void
… …
1937{ 3438{
1938 EV_CB_INVOKE ((W)w, revents); 3439 EV_CB_INVOKE ((W)w, revents);
1939} 3440}
1940 3441
1941unsigned int 3442unsigned int
1942ev_pending_count (EV_P) 3443ev_pending_count (EV_P) EV_NOEXCEPT
1943{ 3444{
1944 int pri; 3445 int pri;
1945 unsigned int count = 0; 3446 unsigned int count = 0;
1946 3447
1947 for (pri = NUMPRI; pri--; ) 3448 for (pri = NUMPRI; pri--; )
1948 count += pendingcnt [pri]; 3449 count += pendingcnt [pri];
1949 3450
1950 return count; 3451 return count;
1951} 3452}
1952 3453
1953void noinline 3454ecb_noinline
3455void
1954ev_invoke_pending (EV_P) 3456ev_invoke_pending (EV_P)
1955{ 3457{
1956 int pri; 3458 pendingpri = NUMPRI;
1957 3459
1958 for (pri = NUMPRI; pri--; ) 3460 do
3461 {
3462 --pendingpri;
3463
3464 /* pendingpri possibly gets modified in the inner loop */
1959 while (pendingcnt [pri]) 3465 while (pendingcnt [pendingpri])
1960 { 3466 {
1961 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3467 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
1962 3468
1963 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1964 /* ^ this is no longer true, as pending_w could be here */
1965
1966 p->w->pending = 0; 3469 p->w->pending = 0;
1967 EV_CB_INVOKE (p->w, p->events); 3470 EV_CB_INVOKE (p->w, p->events);
1968 EV_FREQUENT_CHECK; 3471 EV_FREQUENT_CHECK;
1969 } 3472 }
3473 }
3474 while (pendingpri);
1970} 3475}
1971 3476
1972#if EV_IDLE_ENABLE 3477#if EV_IDLE_ENABLE
1973/* make idle watchers pending. this handles the "call-idle */ 3478/* make idle watchers pending. this handles the "call-idle */
1974/* only when higher priorities are idle" logic */ 3479/* only when higher priorities are idle" logic */
1975inline_size void 3480inline_size void
1976idle_reify (EV_P) 3481idle_reify (EV_P)
1977{ 3482{
1978 if (expect_false (idleall)) 3483 if (ecb_expect_false (idleall))
1979 { 3484 {
1980 int pri; 3485 int pri;
1981 3486
1982 for (pri = NUMPRI; pri--; ) 3487 for (pri = NUMPRI; pri--; )
1983 { 3488 {
… …
2026 EV_FREQUENT_CHECK; 3531 EV_FREQUENT_CHECK;
2027 feed_reverse (EV_A_ (W)w); 3532 feed_reverse (EV_A_ (W)w);
2028 } 3533 }
2029 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 3534 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
2030 3535
2031 feed_reverse_done (EV_A_ EV_TIMEOUT); 3536 feed_reverse_done (EV_A_ EV_TIMER);
2032 } 3537 }
2033} 3538}
2034 3539
2035#if EV_PERIODIC_ENABLE 3540#if EV_PERIODIC_ENABLE
3541
3542ecb_noinline
3543static void
3544periodic_recalc (EV_P_ ev_periodic *w)
3545{
3546 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3547 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3548
3549 /* the above almost always errs on the low side */
3550 while (at <= ev_rt_now)
3551 {
3552 ev_tstamp nat = at + w->interval;
3553
3554 /* when resolution fails us, we use ev_rt_now */
3555 if (ecb_expect_false (nat == at))
3556 {
3557 at = ev_rt_now;
3558 break;
3559 }
3560
3561 at = nat;
3562 }
3563
3564 ev_at (w) = at;
3565}
3566
2036/* make periodics pending */ 3567/* make periodics pending */
2037inline_size void 3568inline_size void
2038periodics_reify (EV_P) 3569periodics_reify (EV_P)
2039{ 3570{
2040 EV_FREQUENT_CHECK; 3571 EV_FREQUENT_CHECK;
2041 3572
2042 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3573 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2043 { 3574 {
2044 int feed_count = 0;
2045
2046 do 3575 do
2047 { 3576 {
2048 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3577 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2049 3578
2050 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3579 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2059 ANHE_at_cache (periodics [HEAP0]); 3588 ANHE_at_cache (periodics [HEAP0]);
2060 downheap (periodics, periodiccnt, HEAP0); 3589 downheap (periodics, periodiccnt, HEAP0);
2061 } 3590 }
2062 else if (w->interval) 3591 else if (w->interval)
2063 { 3592 {
2064 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3593 periodic_recalc (EV_A_ w);
2065 /* if next trigger time is not sufficiently in the future, put it there */
2066 /* this might happen because of floating point inexactness */
2067 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2068 {
2069 ev_at (w) += w->interval;
2070
2071 /* if interval is unreasonably low we might still have a time in the past */
2072 /* so correct this. this will make the periodic very inexact, but the user */
2073 /* has effectively asked to get triggered more often than possible */
2074 if (ev_at (w) < ev_rt_now)
2075 ev_at (w) = ev_rt_now;
2076 }
2077
2078 ANHE_at_cache (periodics [HEAP0]); 3594 ANHE_at_cache (periodics [HEAP0]);
2079 downheap (periodics, periodiccnt, HEAP0); 3595 downheap (periodics, periodiccnt, HEAP0);
2080 } 3596 }
2081 else 3597 else
2082 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3598 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2089 feed_reverse_done (EV_A_ EV_PERIODIC); 3605 feed_reverse_done (EV_A_ EV_PERIODIC);
2090 } 3606 }
2091} 3607}
2092 3608
2093/* simply recalculate all periodics */ 3609/* simply recalculate all periodics */
2094/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 3610/* TODO: maybe ensure that at least one event happens when jumping forward? */
2095static void noinline 3611ecb_noinline ecb_cold
3612static void
2096periodics_reschedule (EV_P) 3613periodics_reschedule (EV_P)
2097{ 3614{
2098 int i; 3615 int i;
2099 3616
2100 /* adjust periodics after time jump */ 3617 /* adjust periodics after time jump */
… …
2103 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3620 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2104 3621
2105 if (w->reschedule_cb) 3622 if (w->reschedule_cb)
2106 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3623 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2107 else if (w->interval) 3624 else if (w->interval)
2108 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3625 periodic_recalc (EV_A_ w);
2109 3626
2110 ANHE_at_cache (periodics [i]); 3627 ANHE_at_cache (periodics [i]);
2111 } 3628 }
2112 3629
2113 reheap (periodics, periodiccnt); 3630 reheap (periodics, periodiccnt);
2114} 3631}
2115#endif 3632#endif
2116 3633
2117/* adjust all timers by a given offset */ 3634/* adjust all timers by a given offset */
2118static void noinline 3635ecb_noinline ecb_cold
3636static void
2119timers_reschedule (EV_P_ ev_tstamp adjust) 3637timers_reschedule (EV_P_ ev_tstamp adjust)
2120{ 3638{
2121 int i; 3639 int i;
2122 3640
2123 for (i = 0; i < timercnt; ++i) 3641 for (i = 0; i < timercnt; ++i)
… …
2127 ANHE_at_cache (*he); 3645 ANHE_at_cache (*he);
2128 } 3646 }
2129} 3647}
2130 3648
2131/* fetch new monotonic and realtime times from the kernel */ 3649/* fetch new monotonic and realtime times from the kernel */
2132/* also detetc if there was a timejump, and act accordingly */ 3650/* also detect if there was a timejump, and act accordingly */
2133inline_speed void 3651inline_speed void
2134time_update (EV_P_ ev_tstamp max_block) 3652time_update (EV_P_ ev_tstamp max_block)
2135{ 3653{
2136#if EV_USE_MONOTONIC 3654#if EV_USE_MONOTONIC
2137 if (expect_true (have_monotonic)) 3655 if (ecb_expect_true (have_monotonic))
2138 { 3656 {
2139 int i; 3657 int i;
2140 ev_tstamp odiff = rtmn_diff; 3658 ev_tstamp odiff = rtmn_diff;
2141 3659
2142 mn_now = get_clock (); 3660 mn_now = get_clock ();
2143 3661
2144 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3662 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
2145 /* interpolate in the meantime */ 3663 /* interpolate in the meantime */
2146 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 3664 if (ecb_expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
2147 { 3665 {
2148 ev_rt_now = rtmn_diff + mn_now; 3666 ev_rt_now = rtmn_diff + mn_now;
2149 return; 3667 return;
2150 } 3668 }
2151 3669
… …
2160 * doesn't hurt either as we only do this on time-jumps or 3678 * doesn't hurt either as we only do this on time-jumps or
2161 * in the unlikely event of having been preempted here. 3679 * in the unlikely event of having been preempted here.
2162 */ 3680 */
2163 for (i = 4; --i; ) 3681 for (i = 4; --i; )
2164 { 3682 {
3683 ev_tstamp diff;
2165 rtmn_diff = ev_rt_now - mn_now; 3684 rtmn_diff = ev_rt_now - mn_now;
2166 3685
3686 diff = odiff - rtmn_diff;
3687
2167 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3688 if (ecb_expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2168 return; /* all is well */ 3689 return; /* all is well */
2169 3690
2170 ev_rt_now = ev_time (); 3691 ev_rt_now = ev_time ();
2171 mn_now = get_clock (); 3692 mn_now = get_clock ();
2172 now_floor = mn_now; 3693 now_floor = mn_now;
… …
2181 else 3702 else
2182#endif 3703#endif
2183 { 3704 {
2184 ev_rt_now = ev_time (); 3705 ev_rt_now = ev_time ();
2185 3706
2186 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 3707 if (ecb_expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
2187 { 3708 {
2188 /* adjust timers. this is easy, as the offset is the same for all of them */ 3709 /* adjust timers. this is easy, as the offset is the same for all of them */
2189 timers_reschedule (EV_A_ ev_rt_now - mn_now); 3710 timers_reschedule (EV_A_ ev_rt_now - mn_now);
2190#if EV_PERIODIC_ENABLE 3711#if EV_PERIODIC_ENABLE
2191 periodics_reschedule (EV_A); 3712 periodics_reschedule (EV_A);
… …
2194 3715
2195 mn_now = ev_rt_now; 3716 mn_now = ev_rt_now;
2196 } 3717 }
2197} 3718}
2198 3719
2199void 3720int
2200ev_loop (EV_P_ int flags) 3721ev_run (EV_P_ int flags)
2201{ 3722{
2202#if EV_MINIMAL < 2 3723#if EV_FEATURE_API
2203 ++loop_depth; 3724 ++loop_depth;
2204#endif 3725#endif
2205 3726
2206 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 3727 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2207 3728
2208 loop_done = EVUNLOOP_CANCEL; 3729 loop_done = EVBREAK_CANCEL;
2209 3730
2210 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 3731 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2211 3732
2212 do 3733 do
2213 { 3734 {
2214#if EV_VERIFY >= 2 3735#if EV_VERIFY >= 2
2215 ev_loop_verify (EV_A); 3736 ev_verify (EV_A);
2216#endif 3737#endif
2217 3738
2218#ifndef _WIN32 3739#ifndef _WIN32
2219 if (expect_false (curpid)) /* penalise the forking check even more */ 3740 if (ecb_expect_false (curpid)) /* penalise the forking check even more */
2220 if (expect_false (getpid () != curpid)) 3741 if (ecb_expect_false (getpid () != curpid))
2221 { 3742 {
2222 curpid = getpid (); 3743 curpid = getpid ();
2223 postfork = 1; 3744 postfork = 1;
2224 } 3745 }
2225#endif 3746#endif
2226 3747
2227#if EV_FORK_ENABLE 3748#if EV_FORK_ENABLE
2228 /* we might have forked, so queue fork handlers */ 3749 /* we might have forked, so queue fork handlers */
2229 if (expect_false (postfork)) 3750 if (ecb_expect_false (postfork))
2230 if (forkcnt) 3751 if (forkcnt)
2231 { 3752 {
2232 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3753 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2233 EV_INVOKE_PENDING; 3754 EV_INVOKE_PENDING;
2234 } 3755 }
2235#endif 3756#endif
2236 3757
3758#if EV_PREPARE_ENABLE
2237 /* queue prepare watchers (and execute them) */ 3759 /* queue prepare watchers (and execute them) */
2238 if (expect_false (preparecnt)) 3760 if (ecb_expect_false (preparecnt))
2239 { 3761 {
2240 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3762 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2241 EV_INVOKE_PENDING; 3763 EV_INVOKE_PENDING;
2242 } 3764 }
3765#endif
2243 3766
2244 if (expect_false (loop_done)) 3767 if (ecb_expect_false (loop_done))
2245 break; 3768 break;
2246 3769
2247 /* we might have forked, so reify kernel state if necessary */ 3770 /* we might have forked, so reify kernel state if necessary */
2248 if (expect_false (postfork)) 3771 if (ecb_expect_false (postfork))
2249 loop_fork (EV_A); 3772 loop_fork (EV_A);
2250 3773
2251 /* update fd-related kernel structures */ 3774 /* update fd-related kernel structures */
2252 fd_reify (EV_A); 3775 fd_reify (EV_A);
2253 3776
2254 /* calculate blocking time */ 3777 /* calculate blocking time */
2255 { 3778 {
2256 ev_tstamp waittime = 0.; 3779 ev_tstamp waittime = 0.;
2257 ev_tstamp sleeptime = 0.; 3780 ev_tstamp sleeptime = 0.;
2258 3781
3782 /* remember old timestamp for io_blocktime calculation */
3783 ev_tstamp prev_mn_now = mn_now;
3784
3785 /* update time to cancel out callback processing overhead */
3786 time_update (EV_A_ 1e100);
3787
3788 /* from now on, we want a pipe-wake-up */
3789 pipe_write_wanted = 1;
3790
3791 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3792
2259 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3793 if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2260 { 3794 {
2261 /* remember old timestamp for io_blocktime calculation */
2262 ev_tstamp prev_mn_now = mn_now;
2263
2264 /* update time to cancel out callback processing overhead */
2265 time_update (EV_A_ 1e100);
2266
2267 waittime = MAX_BLOCKTIME; 3795 waittime = MAX_BLOCKTIME;
2268 3796
2269 if (timercnt) 3797 if (timercnt)
2270 { 3798 {
2271 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3799 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2272 if (waittime > to) waittime = to; 3800 if (waittime > to) waittime = to;
2273 } 3801 }
2274 3802
2275#if EV_PERIODIC_ENABLE 3803#if EV_PERIODIC_ENABLE
2276 if (periodiccnt) 3804 if (periodiccnt)
2277 { 3805 {
2278 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3806 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2279 if (waittime > to) waittime = to; 3807 if (waittime > to) waittime = to;
2280 } 3808 }
2281#endif 3809#endif
2282 3810
2283 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3811 /* don't let timeouts decrease the waittime below timeout_blocktime */
2284 if (expect_false (waittime < timeout_blocktime)) 3812 if (ecb_expect_false (waittime < timeout_blocktime))
2285 waittime = timeout_blocktime; 3813 waittime = timeout_blocktime;
2286 3814
3815 /* at this point, we NEED to wait, so we have to ensure */
3816 /* to pass a minimum nonzero value to the backend */
3817 if (ecb_expect_false (waittime < backend_mintime))
3818 waittime = backend_mintime;
3819
2287 /* extra check because io_blocktime is commonly 0 */ 3820 /* extra check because io_blocktime is commonly 0 */
2288 if (expect_false (io_blocktime)) 3821 if (ecb_expect_false (io_blocktime))
2289 { 3822 {
2290 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3823 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2291 3824
2292 if (sleeptime > waittime - backend_fudge) 3825 if (sleeptime > waittime - backend_mintime)
2293 sleeptime = waittime - backend_fudge; 3826 sleeptime = waittime - backend_mintime;
2294 3827
2295 if (expect_true (sleeptime > 0.)) 3828 if (ecb_expect_true (sleeptime > 0.))
2296 { 3829 {
2297 ev_sleep (sleeptime); 3830 ev_sleep (sleeptime);
2298 waittime -= sleeptime; 3831 waittime -= sleeptime;
2299 } 3832 }
2300 } 3833 }
2301 } 3834 }
2302 3835
2303#if EV_MINIMAL < 2 3836#if EV_FEATURE_API
2304 ++loop_count; 3837 ++loop_count;
2305#endif 3838#endif
2306 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3839 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2307 backend_poll (EV_A_ waittime); 3840 backend_poll (EV_A_ waittime);
2308 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 3841 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3842
3843 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3844
3845 ECB_MEMORY_FENCE_ACQUIRE;
3846 if (pipe_write_skipped)
3847 {
3848 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3849 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3850 }
2309 3851
2310 /* update ev_rt_now, do magic */ 3852 /* update ev_rt_now, do magic */
2311 time_update (EV_A_ waittime + sleeptime); 3853 time_update (EV_A_ waittime + sleeptime);
2312 } 3854 }
2313 3855
… …
2320#if EV_IDLE_ENABLE 3862#if EV_IDLE_ENABLE
2321 /* queue idle watchers unless other events are pending */ 3863 /* queue idle watchers unless other events are pending */
2322 idle_reify (EV_A); 3864 idle_reify (EV_A);
2323#endif 3865#endif
2324 3866
3867#if EV_CHECK_ENABLE
2325 /* queue check watchers, to be executed first */ 3868 /* queue check watchers, to be executed first */
2326 if (expect_false (checkcnt)) 3869 if (ecb_expect_false (checkcnt))
2327 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3870 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3871#endif
2328 3872
2329 EV_INVOKE_PENDING; 3873 EV_INVOKE_PENDING;
2330 } 3874 }
2331 while (expect_true ( 3875 while (ecb_expect_true (
2332 activecnt 3876 activecnt
2333 && !loop_done 3877 && !loop_done
2334 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3878 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2335 )); 3879 ));
2336 3880
2337 if (loop_done == EVUNLOOP_ONE) 3881 if (loop_done == EVBREAK_ONE)
2338 loop_done = EVUNLOOP_CANCEL; 3882 loop_done = EVBREAK_CANCEL;
2339 3883
2340#if EV_MINIMAL < 2 3884#if EV_FEATURE_API
2341 --loop_depth; 3885 --loop_depth;
2342#endif 3886#endif
2343}
2344 3887
3888 return activecnt;
3889}
3890
2345void 3891void
2346ev_unloop (EV_P_ int how) 3892ev_break (EV_P_ int how) EV_NOEXCEPT
2347{ 3893{
2348 loop_done = how; 3894 loop_done = how;
2349} 3895}
2350 3896
2351void 3897void
2352ev_ref (EV_P) 3898ev_ref (EV_P) EV_NOEXCEPT
2353{ 3899{
2354 ++activecnt; 3900 ++activecnt;
2355} 3901}
2356 3902
2357void 3903void
2358ev_unref (EV_P) 3904ev_unref (EV_P) EV_NOEXCEPT
2359{ 3905{
2360 --activecnt; 3906 --activecnt;
2361} 3907}
2362 3908
2363void 3909void
2364ev_now_update (EV_P) 3910ev_now_update (EV_P) EV_NOEXCEPT
2365{ 3911{
2366 time_update (EV_A_ 1e100); 3912 time_update (EV_A_ 1e100);
2367} 3913}
2368 3914
2369void 3915void
2370ev_suspend (EV_P) 3916ev_suspend (EV_P) EV_NOEXCEPT
2371{ 3917{
2372 ev_now_update (EV_A); 3918 ev_now_update (EV_A);
2373} 3919}
2374 3920
2375void 3921void
2376ev_resume (EV_P) 3922ev_resume (EV_P) EV_NOEXCEPT
2377{ 3923{
2378 ev_tstamp mn_prev = mn_now; 3924 ev_tstamp mn_prev = mn_now;
2379 3925
2380 ev_now_update (EV_A); 3926 ev_now_update (EV_A);
2381 timers_reschedule (EV_A_ mn_now - mn_prev); 3927 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2398inline_size void 3944inline_size void
2399wlist_del (WL *head, WL elem) 3945wlist_del (WL *head, WL elem)
2400{ 3946{
2401 while (*head) 3947 while (*head)
2402 { 3948 {
2403 if (expect_true (*head == elem)) 3949 if (ecb_expect_true (*head == elem))
2404 { 3950 {
2405 *head = elem->next; 3951 *head = elem->next;
2406 break; 3952 break;
2407 } 3953 }
2408 3954
… …
2420 w->pending = 0; 3966 w->pending = 0;
2421 } 3967 }
2422} 3968}
2423 3969
2424int 3970int
2425ev_clear_pending (EV_P_ void *w) 3971ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
2426{ 3972{
2427 W w_ = (W)w; 3973 W w_ = (W)w;
2428 int pending = w_->pending; 3974 int pending = w_->pending;
2429 3975
2430 if (expect_true (pending)) 3976 if (ecb_expect_true (pending))
2431 { 3977 {
2432 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 3978 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2433 p->w = (W)&pending_w; 3979 p->w = (W)&pending_w;
2434 w_->pending = 0; 3980 w_->pending = 0;
2435 return p->events; 3981 return p->events;
… …
2462 w->active = 0; 4008 w->active = 0;
2463} 4009}
2464 4010
2465/*****************************************************************************/ 4011/*****************************************************************************/
2466 4012
2467void noinline 4013ecb_noinline
4014void
2468ev_io_start (EV_P_ ev_io *w) 4015ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
2469{ 4016{
2470 int fd = w->fd; 4017 int fd = w->fd;
2471 4018
2472 if (expect_false (ev_is_active (w))) 4019 if (ecb_expect_false (ev_is_active (w)))
2473 return; 4020 return;
2474 4021
2475 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 4022 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2476 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 4023 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2477 4024
4025#if EV_VERIFY >= 2
4026 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
4027#endif
2478 EV_FREQUENT_CHECK; 4028 EV_FREQUENT_CHECK;
2479 4029
2480 ev_start (EV_A_ (W)w, 1); 4030 ev_start (EV_A_ (W)w, 1);
2481 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 4031 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
2482 wlist_add (&anfds[fd].head, (WL)w); 4032 wlist_add (&anfds[fd].head, (WL)w);
4033
4034 /* common bug, apparently */
4035 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
2483 4036
2484 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 4037 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2485 w->events &= ~EV__IOFDSET; 4038 w->events &= ~EV__IOFDSET;
2486 4039
2487 EV_FREQUENT_CHECK; 4040 EV_FREQUENT_CHECK;
2488} 4041}
2489 4042
2490void noinline 4043ecb_noinline
4044void
2491ev_io_stop (EV_P_ ev_io *w) 4045ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
2492{ 4046{
2493 clear_pending (EV_A_ (W)w); 4047 clear_pending (EV_A_ (W)w);
2494 if (expect_false (!ev_is_active (w))) 4048 if (ecb_expect_false (!ev_is_active (w)))
2495 return; 4049 return;
2496 4050
2497 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 4051 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2498 4052
4053#if EV_VERIFY >= 2
4054 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
4055#endif
2499 EV_FREQUENT_CHECK; 4056 EV_FREQUENT_CHECK;
2500 4057
2501 wlist_del (&anfds[w->fd].head, (WL)w); 4058 wlist_del (&anfds[w->fd].head, (WL)w);
2502 ev_stop (EV_A_ (W)w); 4059 ev_stop (EV_A_ (W)w);
2503 4060
2504 fd_change (EV_A_ w->fd, 1); 4061 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2505 4062
2506 EV_FREQUENT_CHECK; 4063 EV_FREQUENT_CHECK;
2507} 4064}
2508 4065
2509void noinline 4066ecb_noinline
4067void
2510ev_timer_start (EV_P_ ev_timer *w) 4068ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
2511{ 4069{
2512 if (expect_false (ev_is_active (w))) 4070 if (ecb_expect_false (ev_is_active (w)))
2513 return; 4071 return;
2514 4072
2515 ev_at (w) += mn_now; 4073 ev_at (w) += mn_now;
2516 4074
2517 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 4075 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2518 4076
2519 EV_FREQUENT_CHECK; 4077 EV_FREQUENT_CHECK;
2520 4078
2521 ++timercnt; 4079 ++timercnt;
2522 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 4080 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
2523 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 4081 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
2524 ANHE_w (timers [ev_active (w)]) = (WT)w; 4082 ANHE_w (timers [ev_active (w)]) = (WT)w;
2525 ANHE_at_cache (timers [ev_active (w)]); 4083 ANHE_at_cache (timers [ev_active (w)]);
2526 upheap (timers, ev_active (w)); 4084 upheap (timers, ev_active (w));
2527 4085
2528 EV_FREQUENT_CHECK; 4086 EV_FREQUENT_CHECK;
2529 4087
2530 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 4088 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2531} 4089}
2532 4090
2533void noinline 4091ecb_noinline
4092void
2534ev_timer_stop (EV_P_ ev_timer *w) 4093ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
2535{ 4094{
2536 clear_pending (EV_A_ (W)w); 4095 clear_pending (EV_A_ (W)w);
2537 if (expect_false (!ev_is_active (w))) 4096 if (ecb_expect_false (!ev_is_active (w)))
2538 return; 4097 return;
2539 4098
2540 EV_FREQUENT_CHECK; 4099 EV_FREQUENT_CHECK;
2541 4100
2542 { 4101 {
… …
2544 4103
2545 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 4104 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2546 4105
2547 --timercnt; 4106 --timercnt;
2548 4107
2549 if (expect_true (active < timercnt + HEAP0)) 4108 if (ecb_expect_true (active < timercnt + HEAP0))
2550 { 4109 {
2551 timers [active] = timers [timercnt + HEAP0]; 4110 timers [active] = timers [timercnt + HEAP0];
2552 adjustheap (timers, timercnt, active); 4111 adjustheap (timers, timercnt, active);
2553 } 4112 }
2554 } 4113 }
2555 4114
2556 EV_FREQUENT_CHECK;
2557
2558 ev_at (w) -= mn_now; 4115 ev_at (w) -= mn_now;
2559 4116
2560 ev_stop (EV_A_ (W)w); 4117 ev_stop (EV_A_ (W)w);
2561}
2562 4118
2563void noinline 4119 EV_FREQUENT_CHECK;
4120}
4121
4122ecb_noinline
4123void
2564ev_timer_again (EV_P_ ev_timer *w) 4124ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
2565{ 4125{
2566 EV_FREQUENT_CHECK; 4126 EV_FREQUENT_CHECK;
4127
4128 clear_pending (EV_A_ (W)w);
2567 4129
2568 if (ev_is_active (w)) 4130 if (ev_is_active (w))
2569 { 4131 {
2570 if (w->repeat) 4132 if (w->repeat)
2571 { 4133 {
… …
2584 4146
2585 EV_FREQUENT_CHECK; 4147 EV_FREQUENT_CHECK;
2586} 4148}
2587 4149
2588ev_tstamp 4150ev_tstamp
2589ev_timer_remaining (EV_P_ ev_timer *w) 4151ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
2590{ 4152{
2591 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4153 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2592} 4154}
2593 4155
2594#if EV_PERIODIC_ENABLE 4156#if EV_PERIODIC_ENABLE
2595void noinline 4157ecb_noinline
4158void
2596ev_periodic_start (EV_P_ ev_periodic *w) 4159ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
2597{ 4160{
2598 if (expect_false (ev_is_active (w))) 4161 if (ecb_expect_false (ev_is_active (w)))
2599 return; 4162 return;
2600 4163
2601 if (w->reschedule_cb) 4164 if (w->reschedule_cb)
2602 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4165 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2603 else if (w->interval) 4166 else if (w->interval)
2604 { 4167 {
2605 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 4168 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2606 /* this formula differs from the one in periodic_reify because we do not always round up */ 4169 periodic_recalc (EV_A_ w);
2607 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2608 } 4170 }
2609 else 4171 else
2610 ev_at (w) = w->offset; 4172 ev_at (w) = w->offset;
2611 4173
2612 EV_FREQUENT_CHECK; 4174 EV_FREQUENT_CHECK;
2613 4175
2614 ++periodiccnt; 4176 ++periodiccnt;
2615 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4177 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2616 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4178 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
2617 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4179 ANHE_w (periodics [ev_active (w)]) = (WT)w;
2618 ANHE_at_cache (periodics [ev_active (w)]); 4180 ANHE_at_cache (periodics [ev_active (w)]);
2619 upheap (periodics, ev_active (w)); 4181 upheap (periodics, ev_active (w));
2620 4182
2621 EV_FREQUENT_CHECK; 4183 EV_FREQUENT_CHECK;
2622 4184
2623 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4185 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2624} 4186}
2625 4187
2626void noinline 4188ecb_noinline
4189void
2627ev_periodic_stop (EV_P_ ev_periodic *w) 4190ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
2628{ 4191{
2629 clear_pending (EV_A_ (W)w); 4192 clear_pending (EV_A_ (W)w);
2630 if (expect_false (!ev_is_active (w))) 4193 if (ecb_expect_false (!ev_is_active (w)))
2631 return; 4194 return;
2632 4195
2633 EV_FREQUENT_CHECK; 4196 EV_FREQUENT_CHECK;
2634 4197
2635 { 4198 {
… …
2637 4200
2638 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 4201 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2639 4202
2640 --periodiccnt; 4203 --periodiccnt;
2641 4204
2642 if (expect_true (active < periodiccnt + HEAP0)) 4205 if (ecb_expect_true (active < periodiccnt + HEAP0))
2643 { 4206 {
2644 periodics [active] = periodics [periodiccnt + HEAP0]; 4207 periodics [active] = periodics [periodiccnt + HEAP0];
2645 adjustheap (periodics, periodiccnt, active); 4208 adjustheap (periodics, periodiccnt, active);
2646 } 4209 }
2647 } 4210 }
2648 4211
2649 EV_FREQUENT_CHECK;
2650
2651 ev_stop (EV_A_ (W)w); 4212 ev_stop (EV_A_ (W)w);
2652}
2653 4213
2654void noinline 4214 EV_FREQUENT_CHECK;
4215}
4216
4217ecb_noinline
4218void
2655ev_periodic_again (EV_P_ ev_periodic *w) 4219ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
2656{ 4220{
2657 /* TODO: use adjustheap and recalculation */ 4221 /* TODO: use adjustheap and recalculation */
2658 ev_periodic_stop (EV_A_ w); 4222 ev_periodic_stop (EV_A_ w);
2659 ev_periodic_start (EV_A_ w); 4223 ev_periodic_start (EV_A_ w);
2660} 4224}
… …
2662 4226
2663#ifndef SA_RESTART 4227#ifndef SA_RESTART
2664# define SA_RESTART 0 4228# define SA_RESTART 0
2665#endif 4229#endif
2666 4230
2667void noinline 4231#if EV_SIGNAL_ENABLE
4232
4233ecb_noinline
4234void
2668ev_signal_start (EV_P_ ev_signal *w) 4235ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
2669{ 4236{
2670 if (expect_false (ev_is_active (w))) 4237 if (ecb_expect_false (ev_is_active (w)))
2671 return; 4238 return;
2672 4239
2673 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4240 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2674 4241
2675#if EV_MULTIPLICITY 4242#if EV_MULTIPLICITY
2676 assert (("libev: a signal must not be attached to two different loops", 4243 assert (("libev: a signal must not be attached to two different loops",
2677 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4244 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2678 4245
2679 signals [w->signum - 1].loop = EV_A; 4246 signals [w->signum - 1].loop = EV_A;
4247 ECB_MEMORY_FENCE_RELEASE;
2680#endif 4248#endif
2681 4249
2682 EV_FREQUENT_CHECK; 4250 EV_FREQUENT_CHECK;
2683 4251
2684#if EV_USE_SIGNALFD 4252#if EV_USE_SIGNALFD
… …
2717 if (!((WL)w)->next) 4285 if (!((WL)w)->next)
2718# if EV_USE_SIGNALFD 4286# if EV_USE_SIGNALFD
2719 if (sigfd < 0) /*TODO*/ 4287 if (sigfd < 0) /*TODO*/
2720# endif 4288# endif
2721 { 4289 {
2722# if _WIN32 4290# ifdef _WIN32
4291 evpipe_init (EV_A);
4292
2723 signal (w->signum, ev_sighandler); 4293 signal (w->signum, ev_sighandler);
2724# else 4294# else
2725 struct sigaction sa; 4295 struct sigaction sa;
2726 4296
2727 evpipe_init (EV_A); 4297 evpipe_init (EV_A);
… …
2729 sa.sa_handler = ev_sighandler; 4299 sa.sa_handler = ev_sighandler;
2730 sigfillset (&sa.sa_mask); 4300 sigfillset (&sa.sa_mask);
2731 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 4301 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2732 sigaction (w->signum, &sa, 0); 4302 sigaction (w->signum, &sa, 0);
2733 4303
4304 if (origflags & EVFLAG_NOSIGMASK)
4305 {
2734 sigemptyset (&sa.sa_mask); 4306 sigemptyset (&sa.sa_mask);
2735 sigaddset (&sa.sa_mask, w->signum); 4307 sigaddset (&sa.sa_mask, w->signum);
2736 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 4308 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
4309 }
2737#endif 4310#endif
2738 } 4311 }
2739 4312
2740 EV_FREQUENT_CHECK; 4313 EV_FREQUENT_CHECK;
2741} 4314}
2742 4315
2743void noinline 4316ecb_noinline
4317void
2744ev_signal_stop (EV_P_ ev_signal *w) 4318ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
2745{ 4319{
2746 clear_pending (EV_A_ (W)w); 4320 clear_pending (EV_A_ (W)w);
2747 if (expect_false (!ev_is_active (w))) 4321 if (ecb_expect_false (!ev_is_active (w)))
2748 return; 4322 return;
2749 4323
2750 EV_FREQUENT_CHECK; 4324 EV_FREQUENT_CHECK;
2751 4325
2752 wlist_del (&signals [w->signum - 1].head, (WL)w); 4326 wlist_del (&signals [w->signum - 1].head, (WL)w);
… …
2758 signals [w->signum - 1].loop = 0; /* unattach from signal */ 4332 signals [w->signum - 1].loop = 0; /* unattach from signal */
2759#endif 4333#endif
2760#if EV_USE_SIGNALFD 4334#if EV_USE_SIGNALFD
2761 if (sigfd >= 0) 4335 if (sigfd >= 0)
2762 { 4336 {
2763 sigprocmask (SIG_UNBLOCK, &sigfd_set, 0);//D 4337 sigset_t ss;
4338
4339 sigemptyset (&ss);
4340 sigaddset (&ss, w->signum);
2764 sigdelset (&sigfd_set, w->signum); 4341 sigdelset (&sigfd_set, w->signum);
4342
2765 signalfd (sigfd, &sigfd_set, 0); 4343 signalfd (sigfd, &sigfd_set, 0);
2766 sigprocmask (SIG_BLOCK, &sigfd_set, 0);//D 4344 sigprocmask (SIG_UNBLOCK, &ss, 0);
2767 /*TODO: maybe unblock signal? */
2768 } 4345 }
2769 else 4346 else
2770#endif 4347#endif
2771 signal (w->signum, SIG_DFL); 4348 signal (w->signum, SIG_DFL);
2772 } 4349 }
2773 4350
2774 EV_FREQUENT_CHECK; 4351 EV_FREQUENT_CHECK;
2775} 4352}
2776 4353
4354#endif
4355
4356#if EV_CHILD_ENABLE
4357
2777void 4358void
2778ev_child_start (EV_P_ ev_child *w) 4359ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
2779{ 4360{
2780#if EV_MULTIPLICITY 4361#if EV_MULTIPLICITY
2781 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4362 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2782#endif 4363#endif
2783 if (expect_false (ev_is_active (w))) 4364 if (ecb_expect_false (ev_is_active (w)))
2784 return; 4365 return;
2785 4366
2786 EV_FREQUENT_CHECK; 4367 EV_FREQUENT_CHECK;
2787 4368
2788 ev_start (EV_A_ (W)w, 1); 4369 ev_start (EV_A_ (W)w, 1);
2789 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4370 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2790 4371
2791 EV_FREQUENT_CHECK; 4372 EV_FREQUENT_CHECK;
2792} 4373}
2793 4374
2794void 4375void
2795ev_child_stop (EV_P_ ev_child *w) 4376ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
2796{ 4377{
2797 clear_pending (EV_A_ (W)w); 4378 clear_pending (EV_A_ (W)w);
2798 if (expect_false (!ev_is_active (w))) 4379 if (ecb_expect_false (!ev_is_active (w)))
2799 return; 4380 return;
2800 4381
2801 EV_FREQUENT_CHECK; 4382 EV_FREQUENT_CHECK;
2802 4383
2803 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4384 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2804 ev_stop (EV_A_ (W)w); 4385 ev_stop (EV_A_ (W)w);
2805 4386
2806 EV_FREQUENT_CHECK; 4387 EV_FREQUENT_CHECK;
2807} 4388}
4389
4390#endif
2808 4391
2809#if EV_STAT_ENABLE 4392#if EV_STAT_ENABLE
2810 4393
2811# ifdef _WIN32 4394# ifdef _WIN32
2812# undef lstat 4395# undef lstat
… …
2815 4398
2816#define DEF_STAT_INTERVAL 5.0074891 4399#define DEF_STAT_INTERVAL 5.0074891
2817#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4400#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2818#define MIN_STAT_INTERVAL 0.1074891 4401#define MIN_STAT_INTERVAL 0.1074891
2819 4402
2820static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4403ecb_noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2821 4404
2822#if EV_USE_INOTIFY 4405#if EV_USE_INOTIFY
2823# define EV_INOTIFY_BUFSIZE 8192
2824 4406
2825static void noinline 4407/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
4408# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
4409
4410ecb_noinline
4411static void
2826infy_add (EV_P_ ev_stat *w) 4412infy_add (EV_P_ ev_stat *w)
2827{ 4413{
2828 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); 4414 w->wd = inotify_add_watch (fs_fd, w->path,
4415 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4416 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4417 | IN_DONT_FOLLOW | IN_MASK_ADD);
2829 4418
2830 if (w->wd < 0) 4419 if (w->wd >= 0)
4420 {
4421 struct statfs sfs;
4422
4423 /* now local changes will be tracked by inotify, but remote changes won't */
4424 /* unless the filesystem is known to be local, we therefore still poll */
4425 /* also do poll on <2.6.25, but with normal frequency */
4426
4427 if (!fs_2625)
4428 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
4429 else if (!statfs (w->path, &sfs)
4430 && (sfs.f_type == 0x1373 /* devfs */
4431 || sfs.f_type == 0x4006 /* fat */
4432 || sfs.f_type == 0x4d44 /* msdos */
4433 || sfs.f_type == 0xEF53 /* ext2/3 */
4434 || sfs.f_type == 0x72b6 /* jffs2 */
4435 || sfs.f_type == 0x858458f6 /* ramfs */
4436 || sfs.f_type == 0x5346544e /* ntfs */
4437 || sfs.f_type == 0x3153464a /* jfs */
4438 || sfs.f_type == 0x9123683e /* btrfs */
4439 || sfs.f_type == 0x52654973 /* reiser3 */
4440 || sfs.f_type == 0x01021994 /* tmpfs */
4441 || sfs.f_type == 0x58465342 /* xfs */))
4442 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
4443 else
4444 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2831 { 4445 }
4446 else
4447 {
4448 /* can't use inotify, continue to stat */
2832 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4449 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2833 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2834 4450
2835 /* monitor some parent directory for speedup hints */ 4451 /* if path is not there, monitor some parent directory for speedup hints */
2836 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 4452 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2837 /* but an efficiency issue only */ 4453 /* but an efficiency issue only */
2838 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 4454 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2839 { 4455 {
2840 char path [4096]; 4456 char path [4096];
… …
2850 if (!pend || pend == path) 4466 if (!pend || pend == path)
2851 break; 4467 break;
2852 4468
2853 *pend = 0; 4469 *pend = 0;
2854 w->wd = inotify_add_watch (fs_fd, path, mask); 4470 w->wd = inotify_add_watch (fs_fd, path, mask);
2855 } 4471 }
2856 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 4472 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2857 } 4473 }
2858 } 4474 }
2859 4475
2860 if (w->wd >= 0) 4476 if (w->wd >= 0)
2861 {
2862 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4477 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2863 4478
2864 /* now local changes will be tracked by inotify, but remote changes won't */ 4479 /* now re-arm timer, if required */
2865 /* unless the filesystem it known to be local, we therefore still poll */ 4480 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2866 /* also do poll on <2.6.25, but with normal frequency */
2867 struct statfs sfs;
2868
2869 if (fs_2625 && !statfs (w->path, &sfs))
2870 if (sfs.f_type == 0x1373 /* devfs */
2871 || sfs.f_type == 0xEF53 /* ext2/3 */
2872 || sfs.f_type == 0x3153464a /* jfs */
2873 || sfs.f_type == 0x52654973 /* reiser3 */
2874 || sfs.f_type == 0x01021994 /* tempfs */
2875 || sfs.f_type == 0x58465342 /* xfs */)
2876 return;
2877
2878 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2879 ev_timer_again (EV_A_ &w->timer); 4481 ev_timer_again (EV_A_ &w->timer);
2880 } 4482 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2881} 4483}
2882 4484
2883static void noinline 4485ecb_noinline
4486static void
2884infy_del (EV_P_ ev_stat *w) 4487infy_del (EV_P_ ev_stat *w)
2885{ 4488{
2886 int slot; 4489 int slot;
2887 int wd = w->wd; 4490 int wd = w->wd;
2888 4491
2889 if (wd < 0) 4492 if (wd < 0)
2890 return; 4493 return;
2891 4494
2892 w->wd = -2; 4495 w->wd = -2;
2893 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 4496 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2894 wlist_del (&fs_hash [slot].head, (WL)w); 4497 wlist_del (&fs_hash [slot].head, (WL)w);
2895 4498
2896 /* remove this watcher, if others are watching it, they will rearm */ 4499 /* remove this watcher, if others are watching it, they will rearm */
2897 inotify_rm_watch (fs_fd, wd); 4500 inotify_rm_watch (fs_fd, wd);
2898} 4501}
2899 4502
2900static void noinline 4503ecb_noinline
4504static void
2901infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4505infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2902{ 4506{
2903 if (slot < 0) 4507 if (slot < 0)
2904 /* overflow, need to check for all hash slots */ 4508 /* overflow, need to check for all hash slots */
2905 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4509 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2906 infy_wd (EV_A_ slot, wd, ev); 4510 infy_wd (EV_A_ slot, wd, ev);
2907 else 4511 else
2908 { 4512 {
2909 WL w_; 4513 WL w_;
2910 4514
2911 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 4515 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2912 { 4516 {
2913 ev_stat *w = (ev_stat *)w_; 4517 ev_stat *w = (ev_stat *)w_;
2914 w_ = w_->next; /* lets us remove this watcher and all before it */ 4518 w_ = w_->next; /* lets us remove this watcher and all before it */
2915 4519
2916 if (w->wd == wd || wd == -1) 4520 if (w->wd == wd || wd == -1)
2917 { 4521 {
2918 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 4522 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2919 { 4523 {
2920 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4524 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2921 w->wd = -1; 4525 w->wd = -1;
2922 infy_add (EV_A_ w); /* re-add, no matter what */ 4526 infy_add (EV_A_ w); /* re-add, no matter what */
2923 } 4527 }
2924 4528
2925 stat_timer_cb (EV_A_ &w->timer, 0); 4529 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2930 4534
2931static void 4535static void
2932infy_cb (EV_P_ ev_io *w, int revents) 4536infy_cb (EV_P_ ev_io *w, int revents)
2933{ 4537{
2934 char buf [EV_INOTIFY_BUFSIZE]; 4538 char buf [EV_INOTIFY_BUFSIZE];
2935 struct inotify_event *ev = (struct inotify_event *)buf;
2936 int ofs; 4539 int ofs;
2937 int len = read (fs_fd, buf, sizeof (buf)); 4540 int len = read (fs_fd, buf, sizeof (buf));
2938 4541
2939 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 4542 for (ofs = 0; ofs < len; )
4543 {
4544 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2940 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4545 infy_wd (EV_A_ ev->wd, ev->wd, ev);
4546 ofs += sizeof (struct inotify_event) + ev->len;
4547 }
2941} 4548}
2942 4549
2943inline_size void 4550inline_size ecb_cold
4551void
2944check_2625 (EV_P) 4552ev_check_2625 (EV_P)
2945{ 4553{
2946 /* kernels < 2.6.25 are borked 4554 /* kernels < 2.6.25 are borked
2947 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4555 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2948 */ 4556 */
2949 struct utsname buf; 4557 if (ev_linux_version () < 0x020619)
2950 int major, minor, micro;
2951
2952 if (uname (&buf))
2953 return; 4558 return;
2954 4559
2955 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2956 return;
2957
2958 if (major < 2
2959 || (major == 2 && minor < 6)
2960 || (major == 2 && minor == 6 && micro < 25))
2961 return;
2962
2963 fs_2625 = 1; 4560 fs_2625 = 1;
4561}
4562
4563inline_size int
4564infy_newfd (void)
4565{
4566#if defined IN_CLOEXEC && defined IN_NONBLOCK
4567 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
4568 if (fd >= 0)
4569 return fd;
4570#endif
4571 return inotify_init ();
2964} 4572}
2965 4573
2966inline_size void 4574inline_size void
2967infy_init (EV_P) 4575infy_init (EV_P)
2968{ 4576{
2969 if (fs_fd != -2) 4577 if (fs_fd != -2)
2970 return; 4578 return;
2971 4579
2972 fs_fd = -1; 4580 fs_fd = -1;
2973 4581
2974 check_2625 (EV_A); 4582 ev_check_2625 (EV_A);
2975 4583
2976 fs_fd = inotify_init (); 4584 fs_fd = infy_newfd ();
2977 4585
2978 if (fs_fd >= 0) 4586 if (fs_fd >= 0)
2979 { 4587 {
4588 fd_intern (fs_fd);
2980 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 4589 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2981 ev_set_priority (&fs_w, EV_MAXPRI); 4590 ev_set_priority (&fs_w, EV_MAXPRI);
2982 ev_io_start (EV_A_ &fs_w); 4591 ev_io_start (EV_A_ &fs_w);
4592 ev_unref (EV_A);
2983 } 4593 }
2984} 4594}
2985 4595
2986inline_size void 4596inline_size void
2987infy_fork (EV_P) 4597infy_fork (EV_P)
… …
2989 int slot; 4599 int slot;
2990 4600
2991 if (fs_fd < 0) 4601 if (fs_fd < 0)
2992 return; 4602 return;
2993 4603
4604 ev_ref (EV_A);
4605 ev_io_stop (EV_A_ &fs_w);
2994 close (fs_fd); 4606 close (fs_fd);
2995 fs_fd = inotify_init (); 4607 fs_fd = infy_newfd ();
2996 4608
4609 if (fs_fd >= 0)
4610 {
4611 fd_intern (fs_fd);
4612 ev_io_set (&fs_w, fs_fd, EV_READ);
4613 ev_io_start (EV_A_ &fs_w);
4614 ev_unref (EV_A);
4615 }
4616
2997 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4617 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2998 { 4618 {
2999 WL w_ = fs_hash [slot].head; 4619 WL w_ = fs_hash [slot].head;
3000 fs_hash [slot].head = 0; 4620 fs_hash [slot].head = 0;
3001 4621
3002 while (w_) 4622 while (w_)
… …
3007 w->wd = -1; 4627 w->wd = -1;
3008 4628
3009 if (fs_fd >= 0) 4629 if (fs_fd >= 0)
3010 infy_add (EV_A_ w); /* re-add, no matter what */ 4630 infy_add (EV_A_ w); /* re-add, no matter what */
3011 else 4631 else
4632 {
4633 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
4634 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3012 ev_timer_again (EV_A_ &w->timer); 4635 ev_timer_again (EV_A_ &w->timer);
4636 if (ev_is_active (&w->timer)) ev_unref (EV_A);
4637 }
3013 } 4638 }
3014 } 4639 }
3015} 4640}
3016 4641
3017#endif 4642#endif
… …
3021#else 4646#else
3022# define EV_LSTAT(p,b) lstat (p, b) 4647# define EV_LSTAT(p,b) lstat (p, b)
3023#endif 4648#endif
3024 4649
3025void 4650void
3026ev_stat_stat (EV_P_ ev_stat *w) 4651ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
3027{ 4652{
3028 if (lstat (w->path, &w->attr) < 0) 4653 if (lstat (w->path, &w->attr) < 0)
3029 w->attr.st_nlink = 0; 4654 w->attr.st_nlink = 0;
3030 else if (!w->attr.st_nlink) 4655 else if (!w->attr.st_nlink)
3031 w->attr.st_nlink = 1; 4656 w->attr.st_nlink = 1;
3032} 4657}
3033 4658
3034static void noinline 4659ecb_noinline
4660static void
3035stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4661stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3036{ 4662{
3037 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4663 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3038 4664
3039 /* we copy this here each the time so that */ 4665 ev_statdata prev = w->attr;
3040 /* prev has the old value when the callback gets invoked */
3041 w->prev = w->attr;
3042 ev_stat_stat (EV_A_ w); 4666 ev_stat_stat (EV_A_ w);
3043 4667
3044 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 4668 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
3045 if ( 4669 if (
3046 w->prev.st_dev != w->attr.st_dev 4670 prev.st_dev != w->attr.st_dev
3047 || w->prev.st_ino != w->attr.st_ino 4671 || prev.st_ino != w->attr.st_ino
3048 || w->prev.st_mode != w->attr.st_mode 4672 || prev.st_mode != w->attr.st_mode
3049 || w->prev.st_nlink != w->attr.st_nlink 4673 || prev.st_nlink != w->attr.st_nlink
3050 || w->prev.st_uid != w->attr.st_uid 4674 || prev.st_uid != w->attr.st_uid
3051 || w->prev.st_gid != w->attr.st_gid 4675 || prev.st_gid != w->attr.st_gid
3052 || w->prev.st_rdev != w->attr.st_rdev 4676 || prev.st_rdev != w->attr.st_rdev
3053 || w->prev.st_size != w->attr.st_size 4677 || prev.st_size != w->attr.st_size
3054 || w->prev.st_atime != w->attr.st_atime 4678 || prev.st_atime != w->attr.st_atime
3055 || w->prev.st_mtime != w->attr.st_mtime 4679 || prev.st_mtime != w->attr.st_mtime
3056 || w->prev.st_ctime != w->attr.st_ctime 4680 || prev.st_ctime != w->attr.st_ctime
3057 ) { 4681 ) {
4682 /* we only update w->prev on actual differences */
4683 /* in case we test more often than invoke the callback, */
4684 /* to ensure that prev is always different to attr */
4685 w->prev = prev;
4686
3058 #if EV_USE_INOTIFY 4687 #if EV_USE_INOTIFY
3059 if (fs_fd >= 0) 4688 if (fs_fd >= 0)
3060 { 4689 {
3061 infy_del (EV_A_ w); 4690 infy_del (EV_A_ w);
3062 infy_add (EV_A_ w); 4691 infy_add (EV_A_ w);
… …
3067 ev_feed_event (EV_A_ w, EV_STAT); 4696 ev_feed_event (EV_A_ w, EV_STAT);
3068 } 4697 }
3069} 4698}
3070 4699
3071void 4700void
3072ev_stat_start (EV_P_ ev_stat *w) 4701ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
3073{ 4702{
3074 if (expect_false (ev_is_active (w))) 4703 if (ecb_expect_false (ev_is_active (w)))
3075 return; 4704 return;
3076 4705
3077 ev_stat_stat (EV_A_ w); 4706 ev_stat_stat (EV_A_ w);
3078 4707
3079 if (w->interval < MIN_STAT_INTERVAL && w->interval) 4708 if (w->interval < MIN_STAT_INTERVAL && w->interval)
… …
3087 4716
3088 if (fs_fd >= 0) 4717 if (fs_fd >= 0)
3089 infy_add (EV_A_ w); 4718 infy_add (EV_A_ w);
3090 else 4719 else
3091#endif 4720#endif
4721 {
3092 ev_timer_again (EV_A_ &w->timer); 4722 ev_timer_again (EV_A_ &w->timer);
4723 ev_unref (EV_A);
4724 }
3093 4725
3094 ev_start (EV_A_ (W)w, 1); 4726 ev_start (EV_A_ (W)w, 1);
3095 4727
3096 EV_FREQUENT_CHECK; 4728 EV_FREQUENT_CHECK;
3097} 4729}
3098 4730
3099void 4731void
3100ev_stat_stop (EV_P_ ev_stat *w) 4732ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
3101{ 4733{
3102 clear_pending (EV_A_ (W)w); 4734 clear_pending (EV_A_ (W)w);
3103 if (expect_false (!ev_is_active (w))) 4735 if (ecb_expect_false (!ev_is_active (w)))
3104 return; 4736 return;
3105 4737
3106 EV_FREQUENT_CHECK; 4738 EV_FREQUENT_CHECK;
3107 4739
3108#if EV_USE_INOTIFY 4740#if EV_USE_INOTIFY
3109 infy_del (EV_A_ w); 4741 infy_del (EV_A_ w);
3110#endif 4742#endif
4743
4744 if (ev_is_active (&w->timer))
4745 {
4746 ev_ref (EV_A);
3111 ev_timer_stop (EV_A_ &w->timer); 4747 ev_timer_stop (EV_A_ &w->timer);
4748 }
3112 4749
3113 ev_stop (EV_A_ (W)w); 4750 ev_stop (EV_A_ (W)w);
3114 4751
3115 EV_FREQUENT_CHECK; 4752 EV_FREQUENT_CHECK;
3116} 4753}
3117#endif 4754#endif
3118 4755
3119#if EV_IDLE_ENABLE 4756#if EV_IDLE_ENABLE
3120void 4757void
3121ev_idle_start (EV_P_ ev_idle *w) 4758ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
3122{ 4759{
3123 if (expect_false (ev_is_active (w))) 4760 if (ecb_expect_false (ev_is_active (w)))
3124 return; 4761 return;
3125 4762
3126 pri_adjust (EV_A_ (W)w); 4763 pri_adjust (EV_A_ (W)w);
3127 4764
3128 EV_FREQUENT_CHECK; 4765 EV_FREQUENT_CHECK;
… …
3131 int active = ++idlecnt [ABSPRI (w)]; 4768 int active = ++idlecnt [ABSPRI (w)];
3132 4769
3133 ++idleall; 4770 ++idleall;
3134 ev_start (EV_A_ (W)w, active); 4771 ev_start (EV_A_ (W)w, active);
3135 4772
3136 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 4773 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
3137 idles [ABSPRI (w)][active - 1] = w; 4774 idles [ABSPRI (w)][active - 1] = w;
3138 } 4775 }
3139 4776
3140 EV_FREQUENT_CHECK; 4777 EV_FREQUENT_CHECK;
3141} 4778}
3142 4779
3143void 4780void
3144ev_idle_stop (EV_P_ ev_idle *w) 4781ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
3145{ 4782{
3146 clear_pending (EV_A_ (W)w); 4783 clear_pending (EV_A_ (W)w);
3147 if (expect_false (!ev_is_active (w))) 4784 if (ecb_expect_false (!ev_is_active (w)))
3148 return; 4785 return;
3149 4786
3150 EV_FREQUENT_CHECK; 4787 EV_FREQUENT_CHECK;
3151 4788
3152 { 4789 {
… …
3161 4798
3162 EV_FREQUENT_CHECK; 4799 EV_FREQUENT_CHECK;
3163} 4800}
3164#endif 4801#endif
3165 4802
4803#if EV_PREPARE_ENABLE
3166void 4804void
3167ev_prepare_start (EV_P_ ev_prepare *w) 4805ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
3168{ 4806{
3169 if (expect_false (ev_is_active (w))) 4807 if (ecb_expect_false (ev_is_active (w)))
3170 return; 4808 return;
3171 4809
3172 EV_FREQUENT_CHECK; 4810 EV_FREQUENT_CHECK;
3173 4811
3174 ev_start (EV_A_ (W)w, ++preparecnt); 4812 ev_start (EV_A_ (W)w, ++preparecnt);
3175 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4813 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
3176 prepares [preparecnt - 1] = w; 4814 prepares [preparecnt - 1] = w;
3177 4815
3178 EV_FREQUENT_CHECK; 4816 EV_FREQUENT_CHECK;
3179} 4817}
3180 4818
3181void 4819void
3182ev_prepare_stop (EV_P_ ev_prepare *w) 4820ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
3183{ 4821{
3184 clear_pending (EV_A_ (W)w); 4822 clear_pending (EV_A_ (W)w);
3185 if (expect_false (!ev_is_active (w))) 4823 if (ecb_expect_false (!ev_is_active (w)))
3186 return; 4824 return;
3187 4825
3188 EV_FREQUENT_CHECK; 4826 EV_FREQUENT_CHECK;
3189 4827
3190 { 4828 {
… …
3196 4834
3197 ev_stop (EV_A_ (W)w); 4835 ev_stop (EV_A_ (W)w);
3198 4836
3199 EV_FREQUENT_CHECK; 4837 EV_FREQUENT_CHECK;
3200} 4838}
4839#endif
3201 4840
4841#if EV_CHECK_ENABLE
3202void 4842void
3203ev_check_start (EV_P_ ev_check *w) 4843ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
3204{ 4844{
3205 if (expect_false (ev_is_active (w))) 4845 if (ecb_expect_false (ev_is_active (w)))
3206 return; 4846 return;
3207 4847
3208 EV_FREQUENT_CHECK; 4848 EV_FREQUENT_CHECK;
3209 4849
3210 ev_start (EV_A_ (W)w, ++checkcnt); 4850 ev_start (EV_A_ (W)w, ++checkcnt);
3211 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 4851 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
3212 checks [checkcnt - 1] = w; 4852 checks [checkcnt - 1] = w;
3213 4853
3214 EV_FREQUENT_CHECK; 4854 EV_FREQUENT_CHECK;
3215} 4855}
3216 4856
3217void 4857void
3218ev_check_stop (EV_P_ ev_check *w) 4858ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
3219{ 4859{
3220 clear_pending (EV_A_ (W)w); 4860 clear_pending (EV_A_ (W)w);
3221 if (expect_false (!ev_is_active (w))) 4861 if (ecb_expect_false (!ev_is_active (w)))
3222 return; 4862 return;
3223 4863
3224 EV_FREQUENT_CHECK; 4864 EV_FREQUENT_CHECK;
3225 4865
3226 { 4866 {
… …
3232 4872
3233 ev_stop (EV_A_ (W)w); 4873 ev_stop (EV_A_ (W)w);
3234 4874
3235 EV_FREQUENT_CHECK; 4875 EV_FREQUENT_CHECK;
3236} 4876}
4877#endif
3237 4878
3238#if EV_EMBED_ENABLE 4879#if EV_EMBED_ENABLE
3239void noinline 4880ecb_noinline
4881void
3240ev_embed_sweep (EV_P_ ev_embed *w) 4882ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
3241{ 4883{
3242 ev_loop (w->other, EVLOOP_NONBLOCK); 4884 ev_run (w->other, EVRUN_NOWAIT);
3243} 4885}
3244 4886
3245static void 4887static void
3246embed_io_cb (EV_P_ ev_io *io, int revents) 4888embed_io_cb (EV_P_ ev_io *io, int revents)
3247{ 4889{
3248 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4890 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3249 4891
3250 if (ev_cb (w)) 4892 if (ev_cb (w))
3251 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4893 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3252 else 4894 else
3253 ev_loop (w->other, EVLOOP_NONBLOCK); 4895 ev_run (w->other, EVRUN_NOWAIT);
3254} 4896}
3255 4897
3256static void 4898static void
3257embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4899embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3258{ 4900{
… …
3262 EV_P = w->other; 4904 EV_P = w->other;
3263 4905
3264 while (fdchangecnt) 4906 while (fdchangecnt)
3265 { 4907 {
3266 fd_reify (EV_A); 4908 fd_reify (EV_A);
3267 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4909 ev_run (EV_A_ EVRUN_NOWAIT);
3268 } 4910 }
3269 } 4911 }
3270} 4912}
3271 4913
3272static void 4914static void
… …
3278 4920
3279 { 4921 {
3280 EV_P = w->other; 4922 EV_P = w->other;
3281 4923
3282 ev_loop_fork (EV_A); 4924 ev_loop_fork (EV_A);
3283 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4925 ev_run (EV_A_ EVRUN_NOWAIT);
3284 } 4926 }
3285 4927
3286 ev_embed_start (EV_A_ w); 4928 ev_embed_start (EV_A_ w);
3287} 4929}
3288 4930
… …
3293 ev_idle_stop (EV_A_ idle); 4935 ev_idle_stop (EV_A_ idle);
3294} 4936}
3295#endif 4937#endif
3296 4938
3297void 4939void
3298ev_embed_start (EV_P_ ev_embed *w) 4940ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
3299{ 4941{
3300 if (expect_false (ev_is_active (w))) 4942 if (ecb_expect_false (ev_is_active (w)))
3301 return; 4943 return;
3302 4944
3303 { 4945 {
3304 EV_P = w->other; 4946 EV_P = w->other;
3305 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4947 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
… …
3324 4966
3325 EV_FREQUENT_CHECK; 4967 EV_FREQUENT_CHECK;
3326} 4968}
3327 4969
3328void 4970void
3329ev_embed_stop (EV_P_ ev_embed *w) 4971ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
3330{ 4972{
3331 clear_pending (EV_A_ (W)w); 4973 clear_pending (EV_A_ (W)w);
3332 if (expect_false (!ev_is_active (w))) 4974 if (ecb_expect_false (!ev_is_active (w)))
3333 return; 4975 return;
3334 4976
3335 EV_FREQUENT_CHECK; 4977 EV_FREQUENT_CHECK;
3336 4978
3337 ev_io_stop (EV_A_ &w->io); 4979 ev_io_stop (EV_A_ &w->io);
3338 ev_prepare_stop (EV_A_ &w->prepare); 4980 ev_prepare_stop (EV_A_ &w->prepare);
3339 ev_fork_stop (EV_A_ &w->fork); 4981 ev_fork_stop (EV_A_ &w->fork);
3340 4982
4983 ev_stop (EV_A_ (W)w);
4984
3341 EV_FREQUENT_CHECK; 4985 EV_FREQUENT_CHECK;
3342} 4986}
3343#endif 4987#endif
3344 4988
3345#if EV_FORK_ENABLE 4989#if EV_FORK_ENABLE
3346void 4990void
3347ev_fork_start (EV_P_ ev_fork *w) 4991ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
3348{ 4992{
3349 if (expect_false (ev_is_active (w))) 4993 if (ecb_expect_false (ev_is_active (w)))
3350 return; 4994 return;
3351 4995
3352 EV_FREQUENT_CHECK; 4996 EV_FREQUENT_CHECK;
3353 4997
3354 ev_start (EV_A_ (W)w, ++forkcnt); 4998 ev_start (EV_A_ (W)w, ++forkcnt);
3355 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 4999 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
3356 forks [forkcnt - 1] = w; 5000 forks [forkcnt - 1] = w;
3357 5001
3358 EV_FREQUENT_CHECK; 5002 EV_FREQUENT_CHECK;
3359} 5003}
3360 5004
3361void 5005void
3362ev_fork_stop (EV_P_ ev_fork *w) 5006ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
3363{ 5007{
3364 clear_pending (EV_A_ (W)w); 5008 clear_pending (EV_A_ (W)w);
3365 if (expect_false (!ev_is_active (w))) 5009 if (ecb_expect_false (!ev_is_active (w)))
3366 return; 5010 return;
3367 5011
3368 EV_FREQUENT_CHECK; 5012 EV_FREQUENT_CHECK;
3369 5013
3370 { 5014 {
… …
3378 5022
3379 EV_FREQUENT_CHECK; 5023 EV_FREQUENT_CHECK;
3380} 5024}
3381#endif 5025#endif
3382 5026
5027#if EV_CLEANUP_ENABLE
5028void
5029ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
5030{
5031 if (ecb_expect_false (ev_is_active (w)))
5032 return;
5033
5034 EV_FREQUENT_CHECK;
5035
5036 ev_start (EV_A_ (W)w, ++cleanupcnt);
5037 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
5038 cleanups [cleanupcnt - 1] = w;
5039
5040 /* cleanup watchers should never keep a refcount on the loop */
5041 ev_unref (EV_A);
5042 EV_FREQUENT_CHECK;
5043}
5044
5045void
5046ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
5047{
5048 clear_pending (EV_A_ (W)w);
5049 if (ecb_expect_false (!ev_is_active (w)))
5050 return;
5051
5052 EV_FREQUENT_CHECK;
5053 ev_ref (EV_A);
5054
5055 {
5056 int active = ev_active (w);
5057
5058 cleanups [active - 1] = cleanups [--cleanupcnt];
5059 ev_active (cleanups [active - 1]) = active;
5060 }
5061
5062 ev_stop (EV_A_ (W)w);
5063
5064 EV_FREQUENT_CHECK;
5065}
5066#endif
5067
3383#if EV_ASYNC_ENABLE 5068#if EV_ASYNC_ENABLE
3384void 5069void
3385ev_async_start (EV_P_ ev_async *w) 5070ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
3386{ 5071{
3387 if (expect_false (ev_is_active (w))) 5072 if (ecb_expect_false (ev_is_active (w)))
3388 return; 5073 return;
3389 5074
5075 w->sent = 0;
5076
3390 evpipe_init (EV_A); 5077 evpipe_init (EV_A);
3391 5078
3392 EV_FREQUENT_CHECK; 5079 EV_FREQUENT_CHECK;
3393 5080
3394 ev_start (EV_A_ (W)w, ++asynccnt); 5081 ev_start (EV_A_ (W)w, ++asynccnt);
3395 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 5082 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
3396 asyncs [asynccnt - 1] = w; 5083 asyncs [asynccnt - 1] = w;
3397 5084
3398 EV_FREQUENT_CHECK; 5085 EV_FREQUENT_CHECK;
3399} 5086}
3400 5087
3401void 5088void
3402ev_async_stop (EV_P_ ev_async *w) 5089ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
3403{ 5090{
3404 clear_pending (EV_A_ (W)w); 5091 clear_pending (EV_A_ (W)w);
3405 if (expect_false (!ev_is_active (w))) 5092 if (ecb_expect_false (!ev_is_active (w)))
3406 return; 5093 return;
3407 5094
3408 EV_FREQUENT_CHECK; 5095 EV_FREQUENT_CHECK;
3409 5096
3410 { 5097 {
… …
3418 5105
3419 EV_FREQUENT_CHECK; 5106 EV_FREQUENT_CHECK;
3420} 5107}
3421 5108
3422void 5109void
3423ev_async_send (EV_P_ ev_async *w) 5110ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
3424{ 5111{
3425 w->sent = 1; 5112 w->sent = 1;
3426 evpipe_write (EV_A_ &async_pending); 5113 evpipe_write (EV_A_ &async_pending);
3427} 5114}
3428#endif 5115#endif
… …
3465 5152
3466 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5153 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3467} 5154}
3468 5155
3469void 5156void
3470ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 5157ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
3471{ 5158{
3472 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5159 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3473
3474 if (expect_false (!once))
3475 {
3476 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
3477 return;
3478 }
3479 5160
3480 once->cb = cb; 5161 once->cb = cb;
3481 once->arg = arg; 5162 once->arg = arg;
3482 5163
3483 ev_init (&once->io, once_cb_io); 5164 ev_init (&once->io, once_cb_io);
… …
3496} 5177}
3497 5178
3498/*****************************************************************************/ 5179/*****************************************************************************/
3499 5180
3500#if EV_WALK_ENABLE 5181#if EV_WALK_ENABLE
5182ecb_cold
3501void 5183void
3502ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 5184ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
3503{ 5185{
3504 int i, j; 5186 int i, j;
3505 ev_watcher_list *wl, *wn; 5187 ev_watcher_list *wl, *wn;
3506 5188
3507 if (types & (EV_IO | EV_EMBED)) 5189 if (types & (EV_IO | EV_EMBED))
… …
3550 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 5232 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3551#endif 5233#endif
3552 5234
3553#if EV_IDLE_ENABLE 5235#if EV_IDLE_ENABLE
3554 if (types & EV_IDLE) 5236 if (types & EV_IDLE)
3555 for (j = NUMPRI; i--; ) 5237 for (j = NUMPRI; j--; )
3556 for (i = idlecnt [j]; i--; ) 5238 for (i = idlecnt [j]; i--; )
3557 cb (EV_A_ EV_IDLE, idles [j][i]); 5239 cb (EV_A_ EV_IDLE, idles [j][i]);
3558#endif 5240#endif
3559 5241
3560#if EV_FORK_ENABLE 5242#if EV_FORK_ENABLE
… …
3568 if (types & EV_ASYNC) 5250 if (types & EV_ASYNC)
3569 for (i = asynccnt; i--; ) 5251 for (i = asynccnt; i--; )
3570 cb (EV_A_ EV_ASYNC, asyncs [i]); 5252 cb (EV_A_ EV_ASYNC, asyncs [i]);
3571#endif 5253#endif
3572 5254
5255#if EV_PREPARE_ENABLE
3573 if (types & EV_PREPARE) 5256 if (types & EV_PREPARE)
3574 for (i = preparecnt; i--; ) 5257 for (i = preparecnt; i--; )
3575#if EV_EMBED_ENABLE 5258# if EV_EMBED_ENABLE
3576 if (ev_cb (prepares [i]) != embed_prepare_cb) 5259 if (ev_cb (prepares [i]) != embed_prepare_cb)
3577#endif 5260# endif
3578 cb (EV_A_ EV_PREPARE, prepares [i]); 5261 cb (EV_A_ EV_PREPARE, prepares [i]);
5262#endif
3579 5263
5264#if EV_CHECK_ENABLE
3580 if (types & EV_CHECK) 5265 if (types & EV_CHECK)
3581 for (i = checkcnt; i--; ) 5266 for (i = checkcnt; i--; )
3582 cb (EV_A_ EV_CHECK, checks [i]); 5267 cb (EV_A_ EV_CHECK, checks [i]);
5268#endif
3583 5269
5270#if EV_SIGNAL_ENABLE
3584 if (types & EV_SIGNAL) 5271 if (types & EV_SIGNAL)
3585 for (i = 0; i < EV_NSIG - 1; ++i) 5272 for (i = 0; i < EV_NSIG - 1; ++i)
3586 for (wl = signals [i].head; wl; ) 5273 for (wl = signals [i].head; wl; )
3587 { 5274 {
3588 wn = wl->next; 5275 wn = wl->next;
3589 cb (EV_A_ EV_SIGNAL, wl); 5276 cb (EV_A_ EV_SIGNAL, wl);
3590 wl = wn; 5277 wl = wn;
3591 } 5278 }
5279#endif
3592 5280
5281#if EV_CHILD_ENABLE
3593 if (types & EV_CHILD) 5282 if (types & EV_CHILD)
3594 for (i = EV_PID_HASHSIZE; i--; ) 5283 for (i = (EV_PID_HASHSIZE); i--; )
3595 for (wl = childs [i]; wl; ) 5284 for (wl = childs [i]; wl; )
3596 { 5285 {
3597 wn = wl->next; 5286 wn = wl->next;
3598 cb (EV_A_ EV_CHILD, wl); 5287 cb (EV_A_ EV_CHILD, wl);
3599 wl = wn; 5288 wl = wn;
3600 } 5289 }
5290#endif
3601/* EV_STAT 0x00001000 /* stat data changed */ 5291/* EV_STAT 0x00001000 /* stat data changed */
3602/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 5292/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3603} 5293}
3604#endif 5294#endif
3605 5295
3606#if EV_MULTIPLICITY 5296#if EV_MULTIPLICITY
3607 #include "ev_wrap.h" 5297 #include "ev_wrap.h"
3608#endif 5298#endif
3609 5299
3610#ifdef __cplusplus
3611}
3612#endif
3613

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