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Comparing libev/ev.c (file contents):
Revision 1.299 by root, Tue Jul 14 00:09:59 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_EVENTFD 148# ifndef EV_USE_INOTIFY
139# if HAVE_EVENTFD 149# define EV_USE_INOTIFY EV_FEATURE_OS
140# define EV_USE_EVENTFD 1
141# else
142# define EV_USE_EVENTFD 0
143# endif 150# endif
151# else
152# undef EV_USE_INOTIFY
153# define EV_USE_INOTIFY 0
154# endif
155
156# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
157# ifndef EV_USE_SIGNALFD
158# define EV_USE_SIGNALFD EV_FEATURE_OS
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
144# endif 172# endif
145 173
146#endif 174#endif
147 175
148#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
149#include <stdlib.h> 186#include <stdlib.h>
187#include <string.h>
150#include <fcntl.h> 188#include <fcntl.h>
151#include <stddef.h> 189#include <stddef.h>
152 190
153#include <stdio.h> 191#include <stdio.h>
154 192
155#include <assert.h> 193#include <assert.h>
156#include <errno.h> 194#include <errno.h>
157#include <sys/types.h> 195#include <sys/types.h>
158#include <time.h> 196#include <time.h>
197#include <limits.h>
159 198
160#include <signal.h> 199#include <signal.h>
161 200
162#ifdef EV_H 201#ifdef EV_H
163# include EV_H 202# include EV_H
164#else 203#else
165# 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
166#endif 216#endif
167 217
168#ifndef _WIN32 218#ifndef _WIN32
169# include <sys/time.h> 219# include <sys/time.h>
170# include <sys/wait.h> 220# include <sys/wait.h>
171# include <unistd.h> 221# include <unistd.h>
172#else 222#else
173# include <io.h> 223# include <io.h>
174# define WIN32_LEAN_AND_MEAN 224# define WIN32_LEAN_AND_MEAN
225# include <winsock2.h>
175# include <windows.h> 226# include <windows.h>
176# ifndef EV_SELECT_IS_WINSOCKET 227# ifndef EV_SELECT_IS_WINSOCKET
177# define EV_SELECT_IS_WINSOCKET 1 228# define EV_SELECT_IS_WINSOCKET 1
178# endif 229# endif
230# undef EV_AVOID_STDIO
179#endif 231#endif
180 232
181/* 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 */
182 234
235/* try to deduce the maximum number of signals on this platform */
236#if defined EV_NSIG
237/* use what's provided */
238#elif defined NSIG
239# define EV_NSIG (NSIG)
240#elif defined _NSIG
241# define EV_NSIG (_NSIG)
242#elif defined SIGMAX
243# define EV_NSIG (SIGMAX+1)
244#elif defined SIG_MAX
245# define EV_NSIG (SIG_MAX+1)
246#elif defined _SIG_MAX
247# define EV_NSIG (_SIG_MAX+1)
248#elif defined MAXSIG
249# define EV_NSIG (MAXSIG+1)
250#elif defined MAX_SIG
251# define EV_NSIG (MAX_SIG+1)
252#elif defined SIGARRAYSIZE
253# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
254#elif defined _sys_nsig
255# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
256#else
257# define EV_NSIG (8 * sizeof (sigset_t) + 1)
258#endif
259
260#ifndef EV_USE_FLOOR
261# define EV_USE_FLOOR 0
262#endif
263
183#ifndef EV_USE_CLOCK_SYSCALL 264#ifndef EV_USE_CLOCK_SYSCALL
184# if __linux && __GLIBC__ >= 2 265# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
185# define EV_USE_CLOCK_SYSCALL 1 266# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
186# else 267# else
187# define EV_USE_CLOCK_SYSCALL 0 268# define EV_USE_CLOCK_SYSCALL 0
188# endif 269# endif
189#endif 270#endif
190 271
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
191#ifndef EV_USE_MONOTONIC 281#ifndef EV_USE_MONOTONIC
192# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 282# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
193# define EV_USE_MONOTONIC 1 283# define EV_USE_MONOTONIC EV_FEATURE_OS
194# else 284# else
195# define EV_USE_MONOTONIC 0 285# define EV_USE_MONOTONIC 0
196# endif 286# endif
197#endif 287#endif
198 288
… …
200# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 290# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
201#endif 291#endif
202 292
203#ifndef EV_USE_NANOSLEEP 293#ifndef EV_USE_NANOSLEEP
204# if _POSIX_C_SOURCE >= 199309L 294# if _POSIX_C_SOURCE >= 199309L
205# define EV_USE_NANOSLEEP 1 295# define EV_USE_NANOSLEEP EV_FEATURE_OS
206# else 296# else
207# define EV_USE_NANOSLEEP 0 297# define EV_USE_NANOSLEEP 0
208# endif 298# endif
209#endif 299#endif
210 300
211#ifndef EV_USE_SELECT 301#ifndef EV_USE_SELECT
212# define EV_USE_SELECT 1 302# define EV_USE_SELECT EV_FEATURE_BACKENDS
213#endif 303#endif
214 304
215#ifndef EV_USE_POLL 305#ifndef EV_USE_POLL
216# ifdef _WIN32 306# ifdef _WIN32
217# define EV_USE_POLL 0 307# define EV_USE_POLL 0
218# else 308# else
219# define EV_USE_POLL 1 309# define EV_USE_POLL EV_FEATURE_BACKENDS
220# endif 310# endif
221#endif 311#endif
222 312
223#ifndef EV_USE_EPOLL 313#ifndef EV_USE_EPOLL
224# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 314# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
225# define EV_USE_EPOLL 1 315# define EV_USE_EPOLL EV_FEATURE_BACKENDS
226# else 316# else
227# define EV_USE_EPOLL 0 317# define EV_USE_EPOLL 0
228# endif 318# endif
229#endif 319#endif
230 320
… …
234 324
235#ifndef EV_USE_PORT 325#ifndef EV_USE_PORT
236# define EV_USE_PORT 0 326# define EV_USE_PORT 0
237#endif 327#endif
238 328
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
239#ifndef EV_USE_INOTIFY 345#ifndef EV_USE_INOTIFY
240# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 346# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
241# define EV_USE_INOTIFY 1 347# define EV_USE_INOTIFY EV_FEATURE_OS
242# else 348# else
243# define EV_USE_INOTIFY 0 349# define EV_USE_INOTIFY 0
244# endif 350# endif
245#endif 351#endif
246 352
247#ifndef EV_PID_HASHSIZE 353#ifndef EV_PID_HASHSIZE
248# if EV_MINIMAL 354# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
249# define EV_PID_HASHSIZE 1
250# else
251# define EV_PID_HASHSIZE 16
252# endif
253#endif 355#endif
254 356
255#ifndef EV_INOTIFY_HASHSIZE 357#ifndef EV_INOTIFY_HASHSIZE
256# if EV_MINIMAL 358# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
257# define EV_INOTIFY_HASHSIZE 1
258# else
259# define EV_INOTIFY_HASHSIZE 16
260# endif
261#endif 359#endif
262 360
263#ifndef EV_USE_EVENTFD 361#ifndef EV_USE_EVENTFD
264# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 362# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
265# define EV_USE_EVENTFD 1 363# define EV_USE_EVENTFD EV_FEATURE_OS
266# else 364# else
267# define EV_USE_EVENTFD 0 365# define EV_USE_EVENTFD 0
366# endif
367#endif
368
369#ifndef EV_USE_SIGNALFD
370# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
371# define EV_USE_SIGNALFD EV_FEATURE_OS
372# else
373# define EV_USE_SIGNALFD 0
268# endif 374# endif
269#endif 375#endif
270 376
271#if 0 /* debugging */ 377#if 0 /* debugging */
272# define EV_VERIFY 3 378# define EV_VERIFY 3
273# define EV_USE_4HEAP 1 379# define EV_USE_4HEAP 1
274# define EV_HEAP_CACHE_AT 1 380# define EV_HEAP_CACHE_AT 1
275#endif 381#endif
276 382
277#ifndef EV_VERIFY 383#ifndef EV_VERIFY
278# define EV_VERIFY !EV_MINIMAL 384# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
279#endif 385#endif
280 386
281#ifndef EV_USE_4HEAP 387#ifndef EV_USE_4HEAP
282# define EV_USE_4HEAP !EV_MINIMAL 388# define EV_USE_4HEAP EV_FEATURE_DATA
283#endif 389#endif
284 390
285#ifndef EV_HEAP_CACHE_AT 391#ifndef EV_HEAP_CACHE_AT
286# 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
287#endif 409#endif
288 410
289/* 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, */
290/* which makes programs even slower. might work on other unices, too. */ 412/* which makes programs even slower. might work on other unices, too. */
291#if EV_USE_CLOCK_SYSCALL 413#if EV_USE_CLOCK_SYSCALL
292# include <syscall.h> 414# include <sys/syscall.h>
293# ifdef SYS_clock_gettime 415# ifdef SYS_clock_gettime
294# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 416# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
295# undef EV_USE_MONOTONIC 417# undef EV_USE_MONOTONIC
296# define EV_USE_MONOTONIC 1 418# define EV_USE_MONOTONIC 1
419# define EV_NEED_SYSCALL 1
297# else 420# else
298# undef EV_USE_CLOCK_SYSCALL 421# undef EV_USE_CLOCK_SYSCALL
299# define EV_USE_CLOCK_SYSCALL 0 422# define EV_USE_CLOCK_SYSCALL 0
300# endif 423# endif
301#endif 424#endif
… …
316# undef EV_USE_INOTIFY 439# undef EV_USE_INOTIFY
317# define EV_USE_INOTIFY 0 440# define EV_USE_INOTIFY 0
318#endif 441#endif
319 442
320#if !EV_USE_NANOSLEEP 443#if !EV_USE_NANOSLEEP
321# ifndef _WIN32 444/* hp-ux has it in sys/time.h, which we unconditionally include above */
445# if !defined _WIN32 && !defined __hpux
322# include <sys/select.h> 446# include <sys/select.h>
323# endif 447# endif
324#endif 448#endif
325 449
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
326#if EV_USE_INOTIFY 475#if EV_USE_INOTIFY
327# include <sys/utsname.h>
328# include <sys/statfs.h> 476# include <sys/statfs.h>
329# include <sys/inotify.h> 477# include <sys/inotify.h>
330/* 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 */
331# ifndef IN_DONT_FOLLOW 479# ifndef IN_DONT_FOLLOW
332# undef EV_USE_INOTIFY 480# undef EV_USE_INOTIFY
333# define EV_USE_INOTIFY 0 481# define EV_USE_INOTIFY 0
334# endif 482# endif
335#endif 483#endif
336 484
337#if EV_SELECT_IS_WINSOCKET
338# include <winsock.h>
339#endif
340
341#if EV_USE_EVENTFD 485#if EV_USE_EVENTFD
342/* 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 */
343# include <stdint.h> 487# include <stdint.h>
344# ifdef __cplusplus 488# ifndef EFD_NONBLOCK
345extern "C" { 489# define EFD_NONBLOCK O_NONBLOCK
346# endif 490# endif
347int eventfd (unsigned int initval, int flags); 491# ifndef EFD_CLOEXEC
348# ifdef __cplusplus 492# ifdef O_CLOEXEC
349} 493# define EFD_CLOEXEC O_CLOEXEC
494# else
495# define EFD_CLOEXEC 02000000
496# endif
350# endif 497# endif
498EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
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
351#endif 506# endif
507# ifndef SFD_CLOEXEC
508# ifdef O_CLOEXEC
509# define SFD_CLOEXEC O_CLOEXEC
510# else
511# define SFD_CLOEXEC 02000000
512# endif
513# endif
514EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
352 515
353/**/ 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
527#include <sys/syscall.h>
528
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/*****************************************************************************/
354 583
355#if EV_VERIFY >= 3 584#if EV_VERIFY >= 3
356# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 585# define EV_FREQUENT_CHECK ev_verify (EV_A)
357#else 586#else
358# define EV_FREQUENT_CHECK do { } while (0) 587# define EV_FREQUENT_CHECK do { } while (0)
359#endif 588#endif
360 589
361/* 590/*
362 * This is used to avoid floating point rounding problems. 591 * This is used to work around floating point rounding problems.
363 * It is added to ev_rt_now when scheduling periodics
364 * to ensure progress, time-wise, even when rounding
365 * errors are against us.
366 * This value is good at least till the year 4000. 592 * This value is good at least till the year 4000.
367 * Better solutions welcome.
368 */ 593 */
369#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 */
370 596
371#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) */
372#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) */
373/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
374 599
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;
375#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)
376# define expect(expr,value) __builtin_expect ((expr),(value)) 957 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
377# define noinline __attribute__ ((noinline))
378#else 958#else
379# define expect(expr,value) (expr) 959 #define ecb_expect(expr,value) (expr)
380# define noinline
381# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
382# define inline
383# endif 960#endif
384#endif
385 961
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. */
386#define expect_false(expr) expect ((expr) != 0, 0) 1026#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
387#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
388#define inline_size static inline 1640#define inline_size ecb_inline
389 1641
390#if EV_MINIMAL 1642#if EV_FEATURE_CODE
391# define inline_speed static noinline
392#else
393# define inline_speed static inline 1643# define inline_speed ecb_inline
1644#else
1645# define inline_speed ecb_noinline static
394#endif 1646#endif
395 1647
396#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1648#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
397 1649
398#if EV_MINPRI == EV_MAXPRI 1650#if EV_MINPRI == EV_MAXPRI
399# define ABSPRI(w) (((W)w), 0) 1651# define ABSPRI(w) (((W)w), 0)
400#else 1652#else
401# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1653# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
402#endif 1654#endif
403 1655
404#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1656#define EMPTY /* required for microsofts broken pseudo-c compiler */
405#define EMPTY2(a,b) /* used to suppress some warnings */
406 1657
407typedef ev_watcher *W; 1658typedef ev_watcher *W;
408typedef ev_watcher_list *WL; 1659typedef ev_watcher_list *WL;
409typedef ev_watcher_time *WT; 1660typedef ev_watcher_time *WT;
410 1661
411#define ev_active(w) ((W)(w))->active 1662#define ev_active(w) ((W)(w))->active
412#define ev_at(w) ((WT)(w))->at 1663#define ev_at(w) ((WT)(w))->at
413 1664
414#if EV_USE_REALTIME 1665#if EV_USE_REALTIME
415/* 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 */
416/* giving it a reasonably high chance of working on typical architetcures */ 1667/* giving it a reasonably high chance of working on typical architectures */
417static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 1668static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
418#endif 1669#endif
419 1670
420#if EV_USE_MONOTONIC 1671#if EV_USE_MONOTONIC
421static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 1672static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
422#endif 1673#endif
423 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
424#ifdef _WIN32 1685#ifdef _WIN32
425# include "ev_win32.c" 1686# include "ev_win32.c"
426#endif 1687#endif
427 1688
428/*****************************************************************************/ 1689/*****************************************************************************/
429 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
430static void (*syserr_cb)(const char *msg); 1796static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
431 1797
1798ecb_cold
432void 1799void
433ev_set_syserr_cb (void (*cb)(const char *msg)) 1800ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
434{ 1801{
435 syserr_cb = cb; 1802 syserr_cb = cb;
436} 1803}
437 1804
438static void noinline 1805ecb_noinline ecb_cold
1806static void
439ev_syserr (const char *msg) 1807ev_syserr (const char *msg)
440{ 1808{
441 if (!msg) 1809 if (!msg)
442 msg = "(libev) system error"; 1810 msg = "(libev) system error";
443 1811
444 if (syserr_cb) 1812 if (syserr_cb)
445 syserr_cb (msg); 1813 syserr_cb (msg);
446 else 1814 else
447 { 1815 {
1816#if EV_AVOID_STDIO
1817 ev_printerr (msg);
1818 ev_printerr (": ");
1819 ev_printerr (strerror (errno));
1820 ev_printerr ("\n");
1821#else
448 perror (msg); 1822 perror (msg);
1823#endif
449 abort (); 1824 abort ();
450 } 1825 }
451} 1826}
452 1827
453static void * 1828static void *
454ev_realloc_emul (void *ptr, long size) 1829ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
455{ 1830{
456 /* some systems, notably openbsd and darwin, fail to properly 1831 /* some systems, notably openbsd and darwin, fail to properly
457 * 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
458 * 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.
459 */ 1836 */
460 1837
461 if (size) 1838 if (size)
462 return realloc (ptr, size); 1839 return realloc (ptr, size);
463 1840
464 free (ptr); 1841 free (ptr);
465 return 0; 1842 return 0;
466} 1843}
467 1844
468static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1845static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
469 1846
1847ecb_cold
470void 1848void
471ev_set_allocator (void *(*cb)(void *ptr, long size)) 1849ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
472{ 1850{
473 alloc = cb; 1851 alloc = cb;
474} 1852}
475 1853
476inline_speed void * 1854inline_speed void *
… …
478{ 1856{
479 ptr = alloc (ptr, size); 1857 ptr = alloc (ptr, size);
480 1858
481 if (!ptr && size) 1859 if (!ptr && size)
482 { 1860 {
1861#if EV_AVOID_STDIO
1862 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1863#else
483 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1864 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1865#endif
484 abort (); 1866 abort ();
485 } 1867 }
486 1868
487 return ptr; 1869 return ptr;
488} 1870}
… …
499typedef struct 1881typedef struct
500{ 1882{
501 WL head; 1883 WL head;
502 unsigned char events; /* the events watched for */ 1884 unsigned char events; /* the events watched for */
503 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) */
504 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 */
505 unsigned char unused; 1887 unsigned char unused;
506#if EV_USE_EPOLL 1888#if EV_USE_EPOLL
507 unsigned int egen; /* generation counter to counter epoll bugs */ 1889 unsigned int egen; /* generation counter to counter epoll bugs */
508#endif 1890#endif
509#if EV_SELECT_IS_WINSOCKET 1891#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
510 SOCKET handle; 1892 SOCKET handle;
1893#endif
1894#if EV_USE_IOCP
1895 OVERLAPPED or, ow;
511#endif 1896#endif
512} ANFD; 1897} ANFD;
513 1898
514/* stores the pending event set for a given watcher */ 1899/* stores the pending event set for a given watcher */
515typedef struct 1900typedef struct
… …
557 #undef VAR 1942 #undef VAR
558 }; 1943 };
559 #include "ev_wrap.h" 1944 #include "ev_wrap.h"
560 1945
561 static struct ev_loop default_loop_struct; 1946 static struct ev_loop default_loop_struct;
562 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 */
563 1948
564#else 1949#else
565 1950
566 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 */
567 #define VAR(name,decl) static decl; 1952 #define VAR(name,decl) static decl;
568 #include "ev_vars.h" 1953 #include "ev_vars.h"
569 #undef VAR 1954 #undef VAR
570 1955
571 static int ev_default_loop_ptr; 1956 static int ev_default_loop_ptr;
572 1957
573#endif 1958#endif
574 1959
575#if EV_MINIMAL < 2 1960#if EV_FEATURE_API
576# 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)
577# 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)
578# define EV_INVOKE_PENDING invoke_cb (EV_A) 1963# define EV_INVOKE_PENDING invoke_cb (EV_A)
579#else 1964#else
580# define EV_RELEASE_CB (void)0 1965# define EV_RELEASE_CB (void)0
581# define EV_ACQUIRE_CB (void)0 1966# define EV_ACQUIRE_CB (void)0
582# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1967# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
583#endif 1968#endif
584 1969
585#define EVUNLOOP_RECURSE 0x80 1970#define EVBREAK_RECURSE 0x80
586 1971
587/*****************************************************************************/ 1972/*****************************************************************************/
588 1973
589#ifndef EV_HAVE_EV_TIME 1974#ifndef EV_HAVE_EV_TIME
590ev_tstamp 1975ev_tstamp
591ev_time (void) 1976ev_time (void) EV_NOEXCEPT
592{ 1977{
593#if EV_USE_REALTIME 1978#if EV_USE_REALTIME
594 if (expect_true (have_realtime)) 1979 if (ecb_expect_true (have_realtime))
595 { 1980 {
596 struct timespec ts; 1981 struct timespec ts;
597 clock_gettime (CLOCK_REALTIME, &ts); 1982 clock_gettime (CLOCK_REALTIME, &ts);
598 return ts.tv_sec + ts.tv_nsec * 1e-9; 1983 return ts.tv_sec + ts.tv_nsec * 1e-9;
599 } 1984 }
… …
607 1992
608inline_size ev_tstamp 1993inline_size ev_tstamp
609get_clock (void) 1994get_clock (void)
610{ 1995{
611#if EV_USE_MONOTONIC 1996#if EV_USE_MONOTONIC
612 if (expect_true (have_monotonic)) 1997 if (ecb_expect_true (have_monotonic))
613 { 1998 {
614 struct timespec ts; 1999 struct timespec ts;
615 clock_gettime (CLOCK_MONOTONIC, &ts); 2000 clock_gettime (CLOCK_MONOTONIC, &ts);
616 return ts.tv_sec + ts.tv_nsec * 1e-9; 2001 return ts.tv_sec + ts.tv_nsec * 1e-9;
617 } 2002 }
… …
620 return ev_time (); 2005 return ev_time ();
621} 2006}
622 2007
623#if EV_MULTIPLICITY 2008#if EV_MULTIPLICITY
624ev_tstamp 2009ev_tstamp
625ev_now (EV_P) 2010ev_now (EV_P) EV_NOEXCEPT
626{ 2011{
627 return ev_rt_now; 2012 return ev_rt_now;
628} 2013}
629#endif 2014#endif
630 2015
631void 2016void
632ev_sleep (ev_tstamp delay) 2017ev_sleep (ev_tstamp delay) EV_NOEXCEPT
633{ 2018{
634 if (delay > 0.) 2019 if (delay > 0.)
635 { 2020 {
636#if EV_USE_NANOSLEEP 2021#if EV_USE_NANOSLEEP
637 struct timespec ts; 2022 struct timespec ts;
638 2023
639 ts.tv_sec = (time_t)delay; 2024 EV_TS_SET (ts, delay);
640 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
641
642 nanosleep (&ts, 0); 2025 nanosleep (&ts, 0);
643#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) */
644 Sleep ((unsigned long)(delay * 1e3)); 2029 Sleep ((unsigned long)(delay * 1e3));
645#else 2030#else
646 struct timeval tv; 2031 struct timeval tv;
647 2032
648 tv.tv_sec = (time_t)delay;
649 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
650
651 /* 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 */
652 /* somehting not guaranteed by newer posix versions, but guaranteed */ 2034 /* something not guaranteed by newer posix versions, but guaranteed */
653 /* by older ones */ 2035 /* by older ones */
2036 EV_TV_SET (tv, delay);
654 select (0, 0, 0, 0, &tv); 2037 select (0, 0, 0, 0, &tv);
655#endif 2038#endif
656 } 2039 }
657} 2040}
658 2041
659/*****************************************************************************/ 2042/*****************************************************************************/
660 2043
661#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 */
662 2045
663/* find a suitable new size for the given array, */ 2046/* find a suitable new size for the given array, */
664/* hopefully by rounding to a ncie-to-malloc size */ 2047/* hopefully by rounding to a nice-to-malloc size */
665inline_size int 2048inline_size int
666array_nextsize (int elem, int cur, int cnt) 2049array_nextsize (int elem, int cur, int cnt)
667{ 2050{
668 int ncur = cur + 1; 2051 int ncur = cur + 1;
669 2052
670 do 2053 do
671 ncur <<= 1; 2054 ncur <<= 1;
672 while (cnt > ncur); 2055 while (cnt > ncur);
673 2056
674 /* 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 */
675 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 2058 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
676 { 2059 {
677 ncur *= elem; 2060 ncur *= elem;
678 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);
679 ncur = ncur - sizeof (void *) * 4; 2062 ncur = ncur - sizeof (void *) * 4;
… …
681 } 2064 }
682 2065
683 return ncur; 2066 return ncur;
684} 2067}
685 2068
686static noinline void * 2069ecb_noinline ecb_cold
2070static void *
687array_realloc (int elem, void *base, int *cur, int cnt) 2071array_realloc (int elem, void *base, int *cur, int cnt)
688{ 2072{
689 *cur = array_nextsize (elem, *cur, cnt); 2073 *cur = array_nextsize (elem, *cur, cnt);
690 return ev_realloc (base, elem * *cur); 2074 return ev_realloc (base, elem * *cur);
691} 2075}
692 2076
2077#define array_needsize_noinit(base,offset,count)
2078
693#define array_init_zero(base,count) \ 2079#define array_needsize_zerofill(base,offset,count) \
694 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 2080 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
695 2081
696#define array_needsize(type,base,cur,cnt,init) \ 2082#define array_needsize(type,base,cur,cnt,init) \
697 if (expect_false ((cnt) > (cur))) \ 2083 if (ecb_expect_false ((cnt) > (cur))) \
698 { \ 2084 { \
699 int ocur_ = (cur); \ 2085 ecb_unused int ocur_ = (cur); \
700 (base) = (type *)array_realloc \ 2086 (base) = (type *)array_realloc \
701 (sizeof (type), (base), &(cur), (cnt)); \ 2087 (sizeof (type), (base), &(cur), (cnt)); \
702 init ((base) + (ocur_), (cur) - ocur_); \ 2088 init ((base), ocur_, ((cur) - ocur_)); \
703 } 2089 }
704 2090
705#if 0 2091#if 0
706#define array_slim(type,stem) \ 2092#define array_slim(type,stem) \
707 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2093 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
… …
716 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
717 2103
718/*****************************************************************************/ 2104/*****************************************************************************/
719 2105
720/* dummy callback for pending events */ 2106/* dummy callback for pending events */
721static void noinline 2107ecb_noinline
2108static void
722pendingcb (EV_P_ ev_prepare *w, int revents) 2109pendingcb (EV_P_ ev_prepare *w, int revents)
723{ 2110{
724} 2111}
725 2112
726void noinline 2113ecb_noinline
2114void
727ev_feed_event (EV_P_ void *w, int revents) 2115ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
728{ 2116{
729 W w_ = (W)w; 2117 W w_ = (W)w;
730 int pri = ABSPRI (w_); 2118 int pri = ABSPRI (w_);
731 2119
732 if (expect_false (w_->pending)) 2120 if (ecb_expect_false (w_->pending))
733 pendings [pri][w_->pending - 1].events |= revents; 2121 pendings [pri][w_->pending - 1].events |= revents;
734 else 2122 else
735 { 2123 {
736 w_->pending = ++pendingcnt [pri]; 2124 w_->pending = ++pendingcnt [pri];
737 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2125 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
738 pendings [pri][w_->pending - 1].w = w_; 2126 pendings [pri][w_->pending - 1].w = w_;
739 pendings [pri][w_->pending - 1].events = revents; 2127 pendings [pri][w_->pending - 1].events = revents;
740 } 2128 }
2129
2130 pendingpri = NUMPRI - 1;
741} 2131}
742 2132
743inline_speed void 2133inline_speed void
744feed_reverse (EV_P_ W w) 2134feed_reverse (EV_P_ W w)
745{ 2135{
746 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2136 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
747 rfeeds [rfeedcnt++] = w; 2137 rfeeds [rfeedcnt++] = w;
748} 2138}
749 2139
750inline_size void 2140inline_size void
751feed_reverse_done (EV_P_ int revents) 2141feed_reverse_done (EV_P_ int revents)
… …
765} 2155}
766 2156
767/*****************************************************************************/ 2157/*****************************************************************************/
768 2158
769inline_speed void 2159inline_speed void
770fd_event_nc (EV_P_ int fd, int revents) 2160fd_event_nocheck (EV_P_ int fd, int revents)
771{ 2161{
772 ANFD *anfd = anfds + fd; 2162 ANFD *anfd = anfds + fd;
773 ev_io *w; 2163 ev_io *w;
774 2164
775 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)
… …
786inline_speed void 2176inline_speed void
787fd_event (EV_P_ int fd, int revents) 2177fd_event (EV_P_ int fd, int revents)
788{ 2178{
789 ANFD *anfd = anfds + fd; 2179 ANFD *anfd = anfds + fd;
790 2180
791 if (expect_true (!anfd->reify)) 2181 if (ecb_expect_true (!anfd->reify))
792 fd_event_nc (EV_A_ fd, revents); 2182 fd_event_nocheck (EV_A_ fd, revents);
793} 2183}
794 2184
795void 2185void
796ev_feed_fd_event (EV_P_ int fd, int revents) 2186ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
797{ 2187{
798 if (fd >= 0 && fd < anfdmax) 2188 if (fd >= 0 && fd < anfdmax)
799 fd_event_nc (EV_A_ fd, revents); 2189 fd_event_nocheck (EV_A_ fd, revents);
800} 2190}
801 2191
802/* make sure the external fd watch events are in-sync */ 2192/* make sure the external fd watch events are in-sync */
803/* with the kernel/libev internal state */ 2193/* with the kernel/libev internal state */
804inline_size void 2194inline_size void
805fd_reify (EV_P) 2195fd_reify (EV_P)
806{ 2196{
807 int i; 2197 int i;
808 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
809 for (i = 0; i < fdchangecnt; ++i) 2224 for (i = 0; i < fdchangecnt; ++i)
810 { 2225 {
811 int fd = fdchanges [i]; 2226 int fd = fdchanges [i];
812 ANFD *anfd = anfds + fd; 2227 ANFD *anfd = anfds + fd;
813 ev_io *w; 2228 ev_io *w;
814 2229
815 unsigned char events = 0; 2230 unsigned char o_events = anfd->events;
2231 unsigned char o_reify = anfd->reify;
816 2232
817 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2233 anfd->reify = 0;
818 events |= (unsigned char)w->events;
819 2234
820#if EV_SELECT_IS_WINSOCKET 2235 /*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
821 if (events)
822 { 2236 {
823 unsigned long arg; 2237 anfd->events = 0;
824 #ifdef EV_FD_TO_WIN32_HANDLE 2238
825 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 2239 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
826 #else 2240 anfd->events |= (unsigned char)w->events;
827 anfd->handle = _get_osfhandle (fd); 2241
828 #endif 2242 if (o_events != anfd->events)
829 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 2243 o_reify = EV__IOFDSET; /* actually |= */
830 } 2244 }
831#endif
832 2245
833 { 2246 if (o_reify & EV__IOFDSET)
834 unsigned char o_events = anfd->events;
835 unsigned char o_reify = anfd->reify;
836
837 anfd->reify = 0;
838 anfd->events = events;
839
840 if (o_events != events || o_reify & EV__IOFDSET)
841 backend_modify (EV_A_ fd, o_events, events); 2247 backend_modify (EV_A_ fd, o_events, anfd->events);
842 }
843 } 2248 }
844 2249
845 fdchangecnt = 0; 2250 fdchangecnt = 0;
846} 2251}
847 2252
848/* something about the given fd changed */ 2253/* something about the given fd changed */
849inline_size void 2254inline_size
2255void
850fd_change (EV_P_ int fd, int flags) 2256fd_change (EV_P_ int fd, int flags)
851{ 2257{
852 unsigned char reify = anfds [fd].reify; 2258 unsigned char reify = anfds [fd].reify;
853 anfds [fd].reify |= flags; 2259 anfds [fd].reify |= flags;
854 2260
855 if (expect_true (!reify)) 2261 if (ecb_expect_true (!reify))
856 { 2262 {
857 ++fdchangecnt; 2263 ++fdchangecnt;
858 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2264 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
859 fdchanges [fdchangecnt - 1] = fd; 2265 fdchanges [fdchangecnt - 1] = fd;
860 } 2266 }
861} 2267}
862 2268
863/* 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 */
864inline_speed void 2270inline_speed ecb_cold void
865fd_kill (EV_P_ int fd) 2271fd_kill (EV_P_ int fd)
866{ 2272{
867 ev_io *w; 2273 ev_io *w;
868 2274
869 while ((w = (ev_io *)anfds [fd].head)) 2275 while ((w = (ev_io *)anfds [fd].head))
… …
871 ev_io_stop (EV_A_ w); 2277 ev_io_stop (EV_A_ w);
872 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);
873 } 2279 }
874} 2280}
875 2281
876/* check whether the given fd is atcually valid, for error recovery */ 2282/* check whether the given fd is actually valid, for error recovery */
877inline_size int 2283inline_size ecb_cold int
878fd_valid (int fd) 2284fd_valid (int fd)
879{ 2285{
880#ifdef _WIN32 2286#ifdef _WIN32
881 return _get_osfhandle (fd) != -1; 2287 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
882#else 2288#else
883 return fcntl (fd, F_GETFD) != -1; 2289 return fcntl (fd, F_GETFD) != -1;
884#endif 2290#endif
885} 2291}
886 2292
887/* called on EBADF to verify fds */ 2293/* called on EBADF to verify fds */
888static void noinline 2294ecb_noinline ecb_cold
2295static void
889fd_ebadf (EV_P) 2296fd_ebadf (EV_P)
890{ 2297{
891 int fd; 2298 int fd;
892 2299
893 for (fd = 0; fd < anfdmax; ++fd) 2300 for (fd = 0; fd < anfdmax; ++fd)
… …
895 if (!fd_valid (fd) && errno == EBADF) 2302 if (!fd_valid (fd) && errno == EBADF)
896 fd_kill (EV_A_ fd); 2303 fd_kill (EV_A_ fd);
897} 2304}
898 2305
899/* 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 */
900static void noinline 2307ecb_noinline ecb_cold
2308static void
901fd_enomem (EV_P) 2309fd_enomem (EV_P)
902{ 2310{
903 int fd; 2311 int fd;
904 2312
905 for (fd = anfdmax; fd--; ) 2313 for (fd = anfdmax; fd--; )
906 if (anfds [fd].events) 2314 if (anfds [fd].events)
907 { 2315 {
908 fd_kill (EV_A_ fd); 2316 fd_kill (EV_A_ fd);
909 return; 2317 break;
910 } 2318 }
911} 2319}
912 2320
913/* 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 */
914static void noinline 2322ecb_noinline
2323static void
915fd_rearm_all (EV_P) 2324fd_rearm_all (EV_P)
916{ 2325{
917 int fd; 2326 int fd;
918 2327
919 for (fd = 0; fd < anfdmax; ++fd) 2328 for (fd = 0; fd < anfdmax; ++fd)
… …
923 anfds [fd].emask = 0; 2332 anfds [fd].emask = 0;
924 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); 2333 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
925 } 2334 }
926} 2335}
927 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
928/*****************************************************************************/ 2351/*****************************************************************************/
929 2352
930/* 2353/*
931 * 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
932 * 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
933 * the branching factor of the d-tree. 2356 * the branching factor of the d-tree.
934 */ 2357 */
935 2358
936/* 2359/*
… …
958 ev_tstamp minat; 2381 ev_tstamp minat;
959 ANHE *minpos; 2382 ANHE *minpos;
960 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; 2383 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
961 2384
962 /* find minimum child */ 2385 /* find minimum child */
963 if (expect_true (pos + DHEAP - 1 < E)) 2386 if (ecb_expect_true (pos + DHEAP - 1 < E))
964 { 2387 {
965 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2388 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
966 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));
967 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));
968 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));
… …
1004 2427
1005 for (;;) 2428 for (;;)
1006 { 2429 {
1007 int c = k << 1; 2430 int c = k << 1;
1008 2431
1009 if (c > N + HEAP0 - 1) 2432 if (c >= N + HEAP0)
1010 break; 2433 break;
1011 2434
1012 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 2435 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
1013 ? 1 : 0; 2436 ? 1 : 0;
1014 2437
… …
1050 2473
1051/* move an element suitably so it is in a correct place */ 2474/* move an element suitably so it is in a correct place */
1052inline_size void 2475inline_size void
1053adjustheap (ANHE *heap, int N, int k) 2476adjustheap (ANHE *heap, int N, int k)
1054{ 2477{
1055 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 2478 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1056 upheap (heap, k); 2479 upheap (heap, k);
1057 else 2480 else
1058 downheap (heap, N, k); 2481 downheap (heap, N, k);
1059} 2482}
1060 2483
… …
1073/*****************************************************************************/ 2496/*****************************************************************************/
1074 2497
1075/* associate signal watchers to a signal signal */ 2498/* associate signal watchers to a signal signal */
1076typedef struct 2499typedef struct
1077{ 2500{
2501 EV_ATOMIC_T pending;
2502#if EV_MULTIPLICITY
2503 EV_P;
2504#endif
1078 WL head; 2505 WL head;
1079 EV_ATOMIC_T gotsig;
1080} ANSIG; 2506} ANSIG;
1081 2507
1082static ANSIG *signals; 2508static ANSIG signals [EV_NSIG - 1];
1083static int signalmax;
1084
1085static EV_ATOMIC_T gotsig;
1086 2509
1087/*****************************************************************************/ 2510/*****************************************************************************/
1088 2511
1089/* used to prepare libev internal fd's */ 2512#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1090/* 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
1091inline_speed void 2560inline_speed void
1092fd_intern (int fd) 2561evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1093{ 2562{
1094#ifdef _WIN32 2563 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1095 unsigned long arg = 1;
1096 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1097#else
1098 fcntl (fd, F_SETFD, FD_CLOEXEC);
1099 fcntl (fd, F_SETFL, O_NONBLOCK);
1100#endif
1101}
1102 2564
1103static void noinline 2565 if (ecb_expect_true (*flag))
1104evpipe_init (EV_P) 2566 return;
1105{ 2567
1106 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)
1107 { 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
1108#if EV_USE_EVENTFD 2584#if EV_USE_EVENTFD
1109 if ((evfd = eventfd (0, 0)) >= 0) 2585 if (evpipe [0] < 0)
1110 { 2586 {
1111 evpipe [0] = -1; 2587 uint64_t counter = 1;
1112 fd_intern (evfd); 2588 write (evpipe [1], &counter, sizeof (uint64_t));
1113 ev_io_set (&pipe_w, evfd, EV_READ);
1114 } 2589 }
1115 else 2590 else
1116#endif 2591#endif
1117 { 2592 {
1118 while (pipe (evpipe)) 2593#ifdef _WIN32
1119 ev_syserr ("(libev) error creating signal/async pipe"); 2594 WSABUF buf;
1120 2595 DWORD sent;
1121 fd_intern (evpipe [0]); 2596 buf.buf = (char *)&buf;
1122 fd_intern (evpipe [1]); 2597 buf.len = 1;
1123 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
1124 } 2602 }
1125
1126 ev_io_start (EV_A_ &pipe_w);
1127 ev_unref (EV_A); /* watcher should not keep loop alive */
1128 }
1129}
1130
1131inline_size void
1132evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1133{
1134 if (!*flag)
1135 {
1136 int old_errno = errno; /* save errno because write might clobber it */
1137
1138 *flag = 1;
1139
1140#if EV_USE_EVENTFD
1141 if (evfd >= 0)
1142 {
1143 uint64_t counter = 1;
1144 write (evfd, &counter, sizeof (uint64_t));
1145 }
1146 else
1147#endif
1148 write (evpipe [1], &old_errno, 1);
1149 2603
1150 errno = old_errno; 2604 errno = old_errno;
1151 } 2605 }
1152} 2606}
1153 2607
1154/* called whenever the libev signal pipe */ 2608/* called whenever the libev signal pipe */
1155/* got some events (signal, async) */ 2609/* got some events (signal, async) */
1156static void 2610static void
1157pipecb (EV_P_ ev_io *iow, int revents) 2611pipecb (EV_P_ ev_io *iow, int revents)
1158{ 2612{
2613 int i;
2614
2615 if (revents & EV_READ)
2616 {
1159#if EV_USE_EVENTFD 2617#if EV_USE_EVENTFD
1160 if (evfd >= 0) 2618 if (evpipe [0] < 0)
1161 { 2619 {
1162 uint64_t counter; 2620 uint64_t counter;
1163 read (evfd, &counter, sizeof (uint64_t)); 2621 read (evpipe [1], &counter, sizeof (uint64_t));
1164 } 2622 }
1165 else 2623 else
1166#endif 2624#endif
1167 { 2625 {
1168 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
1169 read (evpipe [0], &dummy, 1); 2635 read (evpipe [0], &dummy, sizeof (dummy));
2636#endif
2637 }
2638 }
2639
2640 pipe_write_skipped = 0;
2641
2642 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2643
2644#if EV_SIGNAL_ENABLE
2645 if (sig_pending)
1170 } 2646 {
2647 sig_pending = 0;
1171 2648
1172 if (gotsig && ev_is_default_loop (EV_A)) 2649 ECB_MEMORY_FENCE;
1173 {
1174 int signum;
1175 gotsig = 0;
1176 2650
1177 for (signum = signalmax; signum--; ) 2651 for (i = EV_NSIG - 1; i--; )
1178 if (signals [signum].gotsig) 2652 if (ecb_expect_false (signals [i].pending))
1179 ev_feed_signal_event (EV_A_ signum + 1); 2653 ev_feed_signal_event (EV_A_ i + 1);
1180 } 2654 }
2655#endif
1181 2656
1182#if EV_ASYNC_ENABLE 2657#if EV_ASYNC_ENABLE
1183 if (gotasync) 2658 if (async_pending)
1184 { 2659 {
1185 int i; 2660 async_pending = 0;
1186 gotasync = 0; 2661
2662 ECB_MEMORY_FENCE;
1187 2663
1188 for (i = asynccnt; i--; ) 2664 for (i = asynccnt; i--; )
1189 if (asyncs [i]->sent) 2665 if (asyncs [i]->sent)
1190 { 2666 {
1191 asyncs [i]->sent = 0; 2667 asyncs [i]->sent = 0;
2668 ECB_MEMORY_FENCE_RELEASE;
1192 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2669 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1193 } 2670 }
1194 } 2671 }
1195#endif 2672#endif
1196} 2673}
1197 2674
1198/*****************************************************************************/ 2675/*****************************************************************************/
1199 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
1200static void 2693static void
1201ev_sighandler (int signum) 2694ev_sighandler (int signum)
1202{ 2695{
2696#ifdef _WIN32
2697 signal (signum, ev_sighandler);
2698#endif
2699
2700 ev_feed_signal (signum);
2701}
2702
2703ecb_noinline
2704void
2705ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
2706{
2707 WL w;
2708
2709 if (ecb_expect_false (signum <= 0 || signum >= EV_NSIG))
2710 return;
2711
2712 --signum;
2713
1203#if EV_MULTIPLICITY 2714#if EV_MULTIPLICITY
1204 struct ev_loop *loop = &default_loop_struct; 2715 /* it is permissible to try to feed a signal to the wrong loop */
1205#endif 2716 /* or, likely more useful, feeding a signal nobody is waiting for */
1206 2717
1207#if _WIN32 2718 if (ecb_expect_false (signals [signum].loop != EV_A))
1208 signal (signum, ev_sighandler);
1209#endif
1210
1211 signals [signum - 1].gotsig = 1;
1212 evpipe_write (EV_A_ &gotsig);
1213}
1214
1215void noinline
1216ev_feed_signal_event (EV_P_ int signum)
1217{
1218 WL w;
1219
1220#if EV_MULTIPLICITY
1221 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1222#endif
1223
1224 --signum;
1225
1226 if (signum < 0 || signum >= signalmax)
1227 return; 2719 return;
2720#endif
1228 2721
1229 signals [signum].gotsig = 0; 2722 signals [signum].pending = 0;
2723 ECB_MEMORY_FENCE_RELEASE;
1230 2724
1231 for (w = signals [signum].head; w; w = w->next) 2725 for (w = signals [signum].head; w; w = w->next)
1232 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2726 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1233} 2727}
1234 2728
2729#if EV_USE_SIGNALFD
2730static void
2731sigfdcb (EV_P_ ev_io *iow, int revents)
2732{
2733 struct signalfd_siginfo si[2], *sip; /* these structs are big */
2734
2735 for (;;)
2736 {
2737 ssize_t res = read (sigfd, si, sizeof (si));
2738
2739 /* not ISO-C, as res might be -1, but works with SuS */
2740 for (sip = si; (char *)sip < (char *)si + res; ++sip)
2741 ev_feed_signal_event (EV_A_ sip->ssi_signo);
2742
2743 if (res < (ssize_t)sizeof (si))
2744 break;
2745 }
2746}
2747#endif
2748
2749#endif
2750
1235/*****************************************************************************/ 2751/*****************************************************************************/
1236 2752
2753#if EV_CHILD_ENABLE
1237static WL childs [EV_PID_HASHSIZE]; 2754static WL childs [EV_PID_HASHSIZE];
1238
1239#ifndef _WIN32
1240 2755
1241static ev_signal childev; 2756static ev_signal childev;
1242 2757
1243#ifndef WIFCONTINUED 2758#ifndef WIFCONTINUED
1244# define WIFCONTINUED(status) 0 2759# define WIFCONTINUED(status) 0
… …
1249child_reap (EV_P_ int chain, int pid, int status) 2764child_reap (EV_P_ int chain, int pid, int status)
1250{ 2765{
1251 ev_child *w; 2766 ev_child *w;
1252 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2767 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1253 2768
1254 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)
1255 { 2770 {
1256 if ((w->pid == pid || !w->pid) 2771 if ((w->pid == pid || !w->pid)
1257 && (!traced || (w->flags & 1))) 2772 && (!traced || (w->flags & 1)))
1258 { 2773 {
1259 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 */
… …
1284 /* 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 */
1285 /* 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 */
1286 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2801 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1287 2802
1288 child_reap (EV_A_ pid, pid, status); 2803 child_reap (EV_A_ pid, pid, status);
1289 if (EV_PID_HASHSIZE > 1) 2804 if ((EV_PID_HASHSIZE) > 1)
1290 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 */
1291} 2806}
1292 2807
1293#endif 2808#endif
1294 2809
1295/*****************************************************************************/ 2810/*****************************************************************************/
1296 2811
2812#if EV_USE_IOCP
2813# include "ev_iocp.c"
2814#endif
1297#if EV_USE_PORT 2815#if EV_USE_PORT
1298# include "ev_port.c" 2816# include "ev_port.c"
1299#endif 2817#endif
1300#if EV_USE_KQUEUE 2818#if EV_USE_KQUEUE
1301# include "ev_kqueue.c" 2819# include "ev_kqueue.c"
1302#endif 2820#endif
1303#if EV_USE_EPOLL 2821#if EV_USE_EPOLL
1304# include "ev_epoll.c" 2822# include "ev_epoll.c"
1305#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
1306#if EV_USE_POLL 2830#if EV_USE_POLL
1307# include "ev_poll.c" 2831# include "ev_poll.c"
1308#endif 2832#endif
1309#if EV_USE_SELECT 2833#if EV_USE_SELECT
1310# include "ev_select.c" 2834# include "ev_select.c"
1311#endif 2835#endif
1312 2836
1313int 2837ecb_cold int
1314ev_version_major (void) 2838ev_version_major (void) EV_NOEXCEPT
1315{ 2839{
1316 return EV_VERSION_MAJOR; 2840 return EV_VERSION_MAJOR;
1317} 2841}
1318 2842
1319int 2843ecb_cold int
1320ev_version_minor (void) 2844ev_version_minor (void) EV_NOEXCEPT
1321{ 2845{
1322 return EV_VERSION_MINOR; 2846 return EV_VERSION_MINOR;
1323} 2847}
1324 2848
1325/* 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 */
1326int inline_size 2850inline_size ecb_cold int
1327enable_secure (void) 2851enable_secure (void)
1328{ 2852{
1329#ifdef _WIN32 2853#ifdef _WIN32
1330 return 0; 2854 return 0;
1331#else 2855#else
1332 return getuid () != geteuid () 2856 return getuid () != geteuid ()
1333 || getgid () != getegid (); 2857 || getgid () != getegid ();
1334#endif 2858#endif
1335} 2859}
1336 2860
2861ecb_cold
1337unsigned int 2862unsigned int
1338ev_supported_backends (void) 2863ev_supported_backends (void) EV_NOEXCEPT
1339{ 2864{
1340 unsigned int flags = 0; 2865 unsigned int flags = 0;
1341 2866
1342 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2867 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1343 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2868 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
1344 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;
1345 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 2872 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
1346 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2873 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
1347 2874
1348 return flags; 2875 return flags;
1349} 2876}
1350 2877
2878ecb_cold
1351unsigned int 2879unsigned int
1352ev_recommended_backends (void) 2880ev_recommended_backends (void) EV_NOEXCEPT
1353{ 2881{
1354 unsigned int flags = ev_supported_backends (); 2882 unsigned int flags = ev_supported_backends ();
1355 2883
1356#ifndef __NetBSD__ 2884#ifndef __NetBSD__
1357 /* kqueue is borked on everything but netbsd apparently */ 2885 /* kqueue is borked on everything but netbsd apparently */
… …
1361#ifdef __APPLE__ 2889#ifdef __APPLE__
1362 /* only select works correctly on that "unix-certified" platform */ 2890 /* only select works correctly on that "unix-certified" platform */
1363 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2891 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1364 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 */
1365#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
1366 2906
1367 return flags; 2907 return flags;
1368} 2908}
1369 2909
2910ecb_cold
1370unsigned int 2911unsigned int
1371ev_embeddable_backends (void) 2912ev_embeddable_backends (void) EV_NOEXCEPT
1372{ 2913{
1373 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2914 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1374 2915
1375 /* 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 */
1376 /* please fix it and tell me how to detect the fix */ 2917 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1377 flags &= ~EVBACKEND_EPOLL; 2918 flags &= ~EVBACKEND_EPOLL;
1378 2919
1379 return flags; 2920 return flags;
1380} 2921}
1381 2922
1382unsigned int 2923unsigned int
1383ev_backend (EV_P) 2924ev_backend (EV_P) EV_NOEXCEPT
1384{ 2925{
1385 return backend; 2926 return backend;
1386} 2927}
1387 2928
1388#if EV_MINIMAL < 2 2929#if EV_FEATURE_API
1389unsigned int 2930unsigned int
1390ev_loop_count (EV_P) 2931ev_iteration (EV_P) EV_NOEXCEPT
1391{ 2932{
1392 return loop_count; 2933 return loop_count;
1393} 2934}
1394 2935
1395unsigned int 2936unsigned int
1396ev_loop_depth (EV_P) 2937ev_depth (EV_P) EV_NOEXCEPT
1397{ 2938{
1398 return loop_depth; 2939 return loop_depth;
1399} 2940}
1400 2941
1401void 2942void
1402ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2943ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1403{ 2944{
1404 io_blocktime = interval; 2945 io_blocktime = interval;
1405} 2946}
1406 2947
1407void 2948void
1408ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2949ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1409{ 2950{
1410 timeout_blocktime = interval; 2951 timeout_blocktime = interval;
1411} 2952}
1412 2953
1413void 2954void
1414ev_set_userdata (EV_P_ void *data) 2955ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
1415{ 2956{
1416 userdata = data; 2957 userdata = data;
1417} 2958}
1418 2959
1419void * 2960void *
1420ev_userdata (EV_P) 2961ev_userdata (EV_P) EV_NOEXCEPT
1421{ 2962{
1422 return userdata; 2963 return userdata;
1423} 2964}
1424 2965
2966void
1425void 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
1426{ 2968{
1427 invoke_cb = invoke_pending_cb; 2969 invoke_cb = invoke_pending_cb;
1428} 2970}
1429 2971
2972void
1430void 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
1431{ 2974{
1432 release_cb = release; 2975 release_cb = release;
1433 acquire_cb = acquire; 2976 acquire_cb = acquire;
1434} 2977}
1435#endif 2978#endif
1436 2979
1437/* initialise a loop structure, must be zero-initialised */ 2980/* initialise a loop structure, must be zero-initialised */
1438static void noinline 2981ecb_noinline ecb_cold
2982static void
1439loop_init (EV_P_ unsigned int flags) 2983loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
1440{ 2984{
1441 if (!backend) 2985 if (!backend)
1442 { 2986 {
2987 origflags = flags;
2988
1443#if EV_USE_REALTIME 2989#if EV_USE_REALTIME
1444 if (!have_realtime) 2990 if (!have_realtime)
1445 { 2991 {
1446 struct timespec ts; 2992 struct timespec ts;
1447 2993
… …
1458 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 3004 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1459 have_monotonic = 1; 3005 have_monotonic = 1;
1460 } 3006 }
1461#endif 3007#endif
1462 3008
1463 ev_rt_now = ev_time ();
1464 mn_now = get_clock ();
1465 now_floor = mn_now;
1466 rtmn_diff = ev_rt_now - mn_now;
1467#if EV_MINIMAL < 2
1468 invoke_cb = ev_invoke_pending;
1469#endif
1470
1471 io_blocktime = 0.;
1472 timeout_blocktime = 0.;
1473 backend = 0;
1474 backend_fd = -1;
1475 gotasync = 0;
1476#if EV_USE_INOTIFY
1477 fs_fd = -2;
1478#endif
1479
1480 /* pid check not overridable via env */ 3009 /* pid check not overridable via env */
1481#ifndef _WIN32 3010#ifndef _WIN32
1482 if (flags & EVFLAG_FORKCHECK) 3011 if (flags & EVFLAG_FORKCHECK)
1483 curpid = getpid (); 3012 curpid = getpid ();
1484#endif 3013#endif
… …
1486 if (!(flags & EVFLAG_NOENV) 3015 if (!(flags & EVFLAG_NOENV)
1487 && !enable_secure () 3016 && !enable_secure ()
1488 && getenv ("LIBEV_FLAGS")) 3017 && getenv ("LIBEV_FLAGS"))
1489 flags = atoi (getenv ("LIBEV_FLAGS")); 3018 flags = atoi (getenv ("LIBEV_FLAGS"));
1490 3019
1491 if (!(flags & 0x0000ffffU)) 3020 ev_rt_now = ev_time ();
3021 mn_now = get_clock ();
3022 now_floor = mn_now;
3023 rtmn_diff = ev_rt_now - mn_now;
3024#if EV_FEATURE_API
3025 invoke_cb = ev_invoke_pending;
3026#endif
3027
3028 io_blocktime = 0.;
3029 timeout_blocktime = 0.;
3030 backend = 0;
3031 backend_fd = -1;
3032 sig_pending = 0;
3033#if EV_ASYNC_ENABLE
3034 async_pending = 0;
3035#endif
3036 pipe_write_skipped = 0;
3037 pipe_write_wanted = 0;
3038 evpipe [0] = -1;
3039 evpipe [1] = -1;
3040#if EV_USE_INOTIFY
3041 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
3042#endif
3043#if EV_USE_SIGNALFD
3044 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
3045#endif
3046
3047 if (!(flags & EVBACKEND_MASK))
1492 flags |= ev_recommended_backends (); 3048 flags |= ev_recommended_backends ();
1493 3049
3050#if EV_USE_IOCP
3051 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
3052#endif
1494#if EV_USE_PORT 3053#if EV_USE_PORT
1495 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 3054 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1496#endif 3055#endif
1497#if EV_USE_KQUEUE 3056#if EV_USE_KQUEUE
1498 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);
1499#endif 3064#endif
1500#if EV_USE_EPOLL 3065#if EV_USE_EPOLL
1501 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 3066 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
1502#endif 3067#endif
1503#if EV_USE_POLL 3068#if EV_USE_POLL
1504 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 3069 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
1505#endif 3070#endif
1506#if EV_USE_SELECT 3071#if EV_USE_SELECT
1507 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 3072 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
1508#endif 3073#endif
1509 3074
1510 ev_prepare_init (&pending_w, pendingcb); 3075 ev_prepare_init (&pending_w, pendingcb);
1511 3076
3077#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1512 ev_init (&pipe_w, pipecb); 3078 ev_init (&pipe_w, pipecb);
1513 ev_set_priority (&pipe_w, EV_MAXPRI); 3079 ev_set_priority (&pipe_w, EV_MAXPRI);
3080#endif
1514 } 3081 }
1515} 3082}
1516 3083
1517/* free up a loop structure */ 3084/* free up a loop structure */
1518static void noinline 3085ecb_cold
3086void
1519loop_destroy (EV_P) 3087ev_loop_destroy (EV_P)
1520{ 3088{
1521 int i; 3089 int i;
1522 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
3113
1523 if (ev_is_active (&pipe_w)) 3114 if (ev_is_active (&pipe_w))
1524 { 3115 {
1525 ev_ref (EV_A); /* signal watcher */ 3116 /*ev_ref (EV_A);*/
1526 ev_io_stop (EV_A_ &pipe_w); 3117 /*ev_io_stop (EV_A_ &pipe_w);*/
1527 3118
3119 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
3120 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
3121 }
3122
1528#if EV_USE_EVENTFD 3123#if EV_USE_SIGNALFD
1529 if (evfd >= 0) 3124 if (ev_is_active (&sigfd_w))
1530 close (evfd); 3125 close (sigfd);
1531#endif 3126#endif
1532
1533 if (evpipe [0] >= 0)
1534 {
1535 close (evpipe [0]);
1536 close (evpipe [1]);
1537 }
1538 }
1539 3127
1540#if EV_USE_INOTIFY 3128#if EV_USE_INOTIFY
1541 if (fs_fd >= 0) 3129 if (fs_fd >= 0)
1542 close (fs_fd); 3130 close (fs_fd);
1543#endif 3131#endif
1544 3132
1545 if (backend_fd >= 0) 3133 if (backend_fd >= 0)
1546 close (backend_fd); 3134 close (backend_fd);
1547 3135
3136#if EV_USE_IOCP
3137 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
3138#endif
1548#if EV_USE_PORT 3139#if EV_USE_PORT
1549 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3140 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1550#endif 3141#endif
1551#if EV_USE_KQUEUE 3142#if EV_USE_KQUEUE
1552 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);
1553#endif 3150#endif
1554#if EV_USE_EPOLL 3151#if EV_USE_EPOLL
1555 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3152 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
1556#endif 3153#endif
1557#if EV_USE_POLL 3154#if EV_USE_POLL
1558 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3155 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
1559#endif 3156#endif
1560#if EV_USE_SELECT 3157#if EV_USE_SELECT
1561 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3158 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
1562#endif 3159#endif
1563 3160
1564 for (i = NUMPRI; i--; ) 3161 for (i = NUMPRI; i--; )
1565 { 3162 {
1566 array_free (pending, [i]); 3163 array_free (pending, [i]);
1567#if EV_IDLE_ENABLE 3164#if EV_IDLE_ENABLE
1568 array_free (idle, [i]); 3165 array_free (idle, [i]);
1569#endif 3166#endif
1570 } 3167 }
1571 3168
1572 ev_free (anfds); anfdmax = 0; 3169 ev_free (anfds); anfds = 0; anfdmax = 0;
1573 3170
1574 /* have to use the microsoft-never-gets-it-right macro */ 3171 /* have to use the microsoft-never-gets-it-right macro */
1575 array_free (rfeed, EMPTY); 3172 array_free (rfeed, EMPTY);
1576 array_free (fdchange, EMPTY); 3173 array_free (fdchange, EMPTY);
1577 array_free (timer, EMPTY); 3174 array_free (timer, EMPTY);
… …
1579 array_free (periodic, EMPTY); 3176 array_free (periodic, EMPTY);
1580#endif 3177#endif
1581#if EV_FORK_ENABLE 3178#if EV_FORK_ENABLE
1582 array_free (fork, EMPTY); 3179 array_free (fork, EMPTY);
1583#endif 3180#endif
3181#if EV_CLEANUP_ENABLE
3182 array_free (cleanup, EMPTY);
3183#endif
1584 array_free (prepare, EMPTY); 3184 array_free (prepare, EMPTY);
1585 array_free (check, EMPTY); 3185 array_free (check, EMPTY);
1586#if EV_ASYNC_ENABLE 3186#if EV_ASYNC_ENABLE
1587 array_free (async, EMPTY); 3187 array_free (async, EMPTY);
1588#endif 3188#endif
1589 3189
1590 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
1591} 3200}
1592 3201
1593#if EV_USE_INOTIFY 3202#if EV_USE_INOTIFY
1594inline_size void infy_fork (EV_P); 3203inline_size void infy_fork (EV_P);
1595#endif 3204#endif
1596 3205
1597inline_size void 3206inline_size void
1598loop_fork (EV_P) 3207loop_fork (EV_P)
1599{ 3208{
1600#if EV_USE_PORT 3209#if EV_USE_PORT
1601 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3210 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1602#endif 3211#endif
1603#if EV_USE_KQUEUE 3212#if EV_USE_KQUEUE
1604 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);
1605#endif 3220#endif
1606#if EV_USE_EPOLL 3221#if EV_USE_EPOLL
1607 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3222 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
1608#endif 3223#endif
1609#if EV_USE_INOTIFY 3224#if EV_USE_INOTIFY
1610 infy_fork (EV_A); 3225 infy_fork (EV_A);
1611#endif 3226#endif
1612 3227
3228#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1613 if (ev_is_active (&pipe_w)) 3229 if (ev_is_active (&pipe_w) && postfork != 2)
1614 { 3230 {
1615 /* this "locks" the handlers against writing to the pipe */ 3231 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1616 /* while we modify the fd vars */
1617 gotsig = 1;
1618#if EV_ASYNC_ENABLE
1619 gotasync = 1;
1620#endif
1621 3232
1622 ev_ref (EV_A); 3233 ev_ref (EV_A);
1623 ev_io_stop (EV_A_ &pipe_w); 3234 ev_io_stop (EV_A_ &pipe_w);
1624 3235
1625#if EV_USE_EVENTFD
1626 if (evfd >= 0)
1627 close (evfd);
1628#endif
1629
1630 if (evpipe [0] >= 0) 3236 if (evpipe [0] >= 0)
1631 { 3237 EV_WIN32_CLOSE_FD (evpipe [0]);
1632 close (evpipe [0]);
1633 close (evpipe [1]);
1634 }
1635 3238
1636 evpipe_init (EV_A); 3239 evpipe_init (EV_A);
1637 /* now iterate over everything, in case we missed something */ 3240 /* iterate over everything, in case we missed something before */
1638 pipecb (EV_A_ &pipe_w, EV_READ); 3241 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1639 } 3242 }
3243#endif
1640 3244
1641 postfork = 0; 3245 postfork = 0;
1642} 3246}
1643 3247
1644#if EV_MULTIPLICITY 3248#if EV_MULTIPLICITY
1645 3249
3250ecb_cold
1646struct ev_loop * 3251struct ev_loop *
1647ev_loop_new (unsigned int flags) 3252ev_loop_new (unsigned int flags) EV_NOEXCEPT
1648{ 3253{
1649 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3254 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1650 3255
1651 memset (loop, 0, sizeof (struct ev_loop)); 3256 memset (EV_A, 0, sizeof (struct ev_loop));
1652
1653 loop_init (EV_A_ flags); 3257 loop_init (EV_A_ flags);
1654 3258
1655 if (ev_backend (EV_A)) 3259 if (ev_backend (EV_A))
1656 return loop; 3260 return EV_A;
1657 3261
3262 ev_free (EV_A);
1658 return 0; 3263 return 0;
1659} 3264}
1660 3265
1661void
1662ev_loop_destroy (EV_P)
1663{
1664 loop_destroy (EV_A);
1665 ev_free (loop);
1666}
1667
1668void
1669ev_loop_fork (EV_P)
1670{
1671 postfork = 1; /* must be in line with ev_default_fork */
1672}
1673#endif /* multiplicity */ 3266#endif /* multiplicity */
1674 3267
1675#if EV_VERIFY 3268#if EV_VERIFY
1676static void noinline 3269ecb_noinline ecb_cold
3270static void
1677verify_watcher (EV_P_ W w) 3271verify_watcher (EV_P_ W w)
1678{ 3272{
1679 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));
1680 3274
1681 if (w->pending) 3275 if (w->pending)
1682 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));
1683} 3277}
1684 3278
1685static void noinline 3279ecb_noinline ecb_cold
3280static void
1686verify_heap (EV_P_ ANHE *heap, int N) 3281verify_heap (EV_P_ ANHE *heap, int N)
1687{ 3282{
1688 int i; 3283 int i;
1689 3284
1690 for (i = HEAP0; i < N + HEAP0; ++i) 3285 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1695 3290
1696 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3291 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1697 } 3292 }
1698} 3293}
1699 3294
1700static void noinline 3295ecb_noinline ecb_cold
3296static void
1701array_verify (EV_P_ W *ws, int cnt) 3297array_verify (EV_P_ W *ws, int cnt)
1702{ 3298{
1703 while (cnt--) 3299 while (cnt--)
1704 { 3300 {
1705 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3301 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1706 verify_watcher (EV_A_ ws [cnt]); 3302 verify_watcher (EV_A_ ws [cnt]);
1707 } 3303 }
1708} 3304}
1709#endif 3305#endif
1710 3306
1711#if EV_MINIMAL < 2 3307#if EV_FEATURE_API
1712void 3308void ecb_cold
1713ev_loop_verify (EV_P) 3309ev_verify (EV_P) EV_NOEXCEPT
1714{ 3310{
1715#if EV_VERIFY 3311#if EV_VERIFY
1716 int i; 3312 int i;
1717 WL w; 3313 WL w, w2;
1718 3314
1719 assert (activecnt >= -1); 3315 assert (activecnt >= -1);
1720 3316
1721 assert (fdchangemax >= fdchangecnt); 3317 assert (fdchangemax >= fdchangecnt);
1722 for (i = 0; i < fdchangecnt; ++i) 3318 for (i = 0; i < fdchangecnt; ++i)
1723 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3319 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1724 3320
1725 assert (anfdmax >= 0); 3321 assert (anfdmax >= 0);
1726 for (i = 0; i < anfdmax; ++i) 3322 for (i = 0; i < anfdmax; ++i)
3323 {
3324 int j = 0;
3325
1727 for (w = anfds [i].head; w; w = w->next) 3326 for (w = w2 = anfds [i].head; w; w = w->next)
1728 { 3327 {
1729 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
1730 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));
1731 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));
1732 } 3338 }
3339 }
1733 3340
1734 assert (timermax >= timercnt); 3341 assert (timermax >= timercnt);
1735 verify_heap (EV_A_ timers, timercnt); 3342 verify_heap (EV_A_ timers, timercnt);
1736 3343
1737#if EV_PERIODIC_ENABLE 3344#if EV_PERIODIC_ENABLE
… …
1752#if EV_FORK_ENABLE 3359#if EV_FORK_ENABLE
1753 assert (forkmax >= forkcnt); 3360 assert (forkmax >= forkcnt);
1754 array_verify (EV_A_ (W *)forks, forkcnt); 3361 array_verify (EV_A_ (W *)forks, forkcnt);
1755#endif 3362#endif
1756 3363
3364#if EV_CLEANUP_ENABLE
3365 assert (cleanupmax >= cleanupcnt);
3366 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
3367#endif
3368
1757#if EV_ASYNC_ENABLE 3369#if EV_ASYNC_ENABLE
1758 assert (asyncmax >= asynccnt); 3370 assert (asyncmax >= asynccnt);
1759 array_verify (EV_A_ (W *)asyncs, asynccnt); 3371 array_verify (EV_A_ (W *)asyncs, asynccnt);
1760#endif 3372#endif
1761 3373
3374#if EV_PREPARE_ENABLE
1762 assert (preparemax >= preparecnt); 3375 assert (preparemax >= preparecnt);
1763 array_verify (EV_A_ (W *)prepares, preparecnt); 3376 array_verify (EV_A_ (W *)prepares, preparecnt);
3377#endif
1764 3378
3379#if EV_CHECK_ENABLE
1765 assert (checkmax >= checkcnt); 3380 assert (checkmax >= checkcnt);
1766 array_verify (EV_A_ (W *)checks, checkcnt); 3381 array_verify (EV_A_ (W *)checks, checkcnt);
3382#endif
1767 3383
1768# if 0 3384# if 0
3385#if EV_CHILD_ENABLE
1769 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)
1770 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 3387 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
3388#endif
1771# endif 3389# endif
1772#endif 3390#endif
1773} 3391}
1774#endif 3392#endif
1775 3393
1776#if EV_MULTIPLICITY 3394#if EV_MULTIPLICITY
3395ecb_cold
1777struct ev_loop * 3396struct ev_loop *
1778ev_default_loop_init (unsigned int flags)
1779#else 3397#else
1780int 3398int
3399#endif
1781ev_default_loop (unsigned int flags) 3400ev_default_loop (unsigned int flags) EV_NOEXCEPT
1782#endif
1783{ 3401{
1784 if (!ev_default_loop_ptr) 3402 if (!ev_default_loop_ptr)
1785 { 3403 {
1786#if EV_MULTIPLICITY 3404#if EV_MULTIPLICITY
1787 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 3405 EV_P = ev_default_loop_ptr = &default_loop_struct;
1788#else 3406#else
1789 ev_default_loop_ptr = 1; 3407 ev_default_loop_ptr = 1;
1790#endif 3408#endif
1791 3409
1792 loop_init (EV_A_ flags); 3410 loop_init (EV_A_ flags);
1793 3411
1794 if (ev_backend (EV_A)) 3412 if (ev_backend (EV_A))
1795 { 3413 {
1796#ifndef _WIN32 3414#if EV_CHILD_ENABLE
1797 ev_signal_init (&childev, childcb, SIGCHLD); 3415 ev_signal_init (&childev, childcb, SIGCHLD);
1798 ev_set_priority (&childev, EV_MAXPRI); 3416 ev_set_priority (&childev, EV_MAXPRI);
1799 ev_signal_start (EV_A_ &childev); 3417 ev_signal_start (EV_A_ &childev);
1800 ev_unref (EV_A); /* child watcher should not keep loop alive */ 3418 ev_unref (EV_A); /* child watcher should not keep loop alive */
1801#endif 3419#endif
… …
1806 3424
1807 return ev_default_loop_ptr; 3425 return ev_default_loop_ptr;
1808} 3426}
1809 3427
1810void 3428void
1811ev_default_destroy (void) 3429ev_loop_fork (EV_P) EV_NOEXCEPT
1812{ 3430{
1813#if EV_MULTIPLICITY 3431 postfork = 1;
1814 struct ev_loop *loop = ev_default_loop_ptr;
1815#endif
1816
1817 ev_default_loop_ptr = 0;
1818
1819#ifndef _WIN32
1820 ev_ref (EV_A); /* child watcher */
1821 ev_signal_stop (EV_A_ &childev);
1822#endif
1823
1824 loop_destroy (EV_A);
1825}
1826
1827void
1828ev_default_fork (void)
1829{
1830#if EV_MULTIPLICITY
1831 struct ev_loop *loop = ev_default_loop_ptr;
1832#endif
1833
1834 postfork = 1; /* must be in line with ev_loop_fork */
1835} 3432}
1836 3433
1837/*****************************************************************************/ 3434/*****************************************************************************/
1838 3435
1839void 3436void
1840ev_invoke (EV_P_ void *w, int revents) 3437ev_invoke (EV_P_ void *w, int revents)
1841{ 3438{
1842 EV_CB_INVOKE ((W)w, revents); 3439 EV_CB_INVOKE ((W)w, revents);
1843} 3440}
1844 3441
1845void noinline 3442unsigned int
3443ev_pending_count (EV_P) EV_NOEXCEPT
3444{
3445 int pri;
3446 unsigned int count = 0;
3447
3448 for (pri = NUMPRI; pri--; )
3449 count += pendingcnt [pri];
3450
3451 return count;
3452}
3453
3454ecb_noinline
3455void
1846ev_invoke_pending (EV_P) 3456ev_invoke_pending (EV_P)
1847{ 3457{
1848 int pri; 3458 pendingpri = NUMPRI;
1849 3459
1850 for (pri = NUMPRI; pri--; ) 3460 do
3461 {
3462 --pendingpri;
3463
3464 /* pendingpri possibly gets modified in the inner loop */
1851 while (pendingcnt [pri]) 3465 while (pendingcnt [pendingpri])
1852 { 3466 {
1853 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3467 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
1854 3468
1855 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1856 /* ^ this is no longer true, as pending_w could be here */
1857
1858 p->w->pending = 0; 3469 p->w->pending = 0;
1859 EV_CB_INVOKE (p->w, p->events); 3470 EV_CB_INVOKE (p->w, p->events);
1860 EV_FREQUENT_CHECK; 3471 EV_FREQUENT_CHECK;
1861 } 3472 }
3473 }
3474 while (pendingpri);
1862} 3475}
1863 3476
1864#if EV_IDLE_ENABLE 3477#if EV_IDLE_ENABLE
1865/* make idle watchers pending. this handles the "call-idle */ 3478/* make idle watchers pending. this handles the "call-idle */
1866/* only when higher priorities are idle" logic */ 3479/* only when higher priorities are idle" logic */
1867inline_size void 3480inline_size void
1868idle_reify (EV_P) 3481idle_reify (EV_P)
1869{ 3482{
1870 if (expect_false (idleall)) 3483 if (ecb_expect_false (idleall))
1871 { 3484 {
1872 int pri; 3485 int pri;
1873 3486
1874 for (pri = NUMPRI; pri--; ) 3487 for (pri = NUMPRI; pri--; )
1875 { 3488 {
… …
1918 EV_FREQUENT_CHECK; 3531 EV_FREQUENT_CHECK;
1919 feed_reverse (EV_A_ (W)w); 3532 feed_reverse (EV_A_ (W)w);
1920 } 3533 }
1921 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 3534 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1922 3535
1923 feed_reverse_done (EV_A_ EV_TIMEOUT); 3536 feed_reverse_done (EV_A_ EV_TIMER);
1924 } 3537 }
1925} 3538}
1926 3539
1927#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
1928/* make periodics pending */ 3567/* make periodics pending */
1929inline_size void 3568inline_size void
1930periodics_reify (EV_P) 3569periodics_reify (EV_P)
1931{ 3570{
1932 EV_FREQUENT_CHECK; 3571 EV_FREQUENT_CHECK;
1933 3572
1934 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3573 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1935 { 3574 {
1936 int feed_count = 0;
1937
1938 do 3575 do
1939 { 3576 {
1940 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3577 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
1941 3578
1942 /*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)));*/
… …
1951 ANHE_at_cache (periodics [HEAP0]); 3588 ANHE_at_cache (periodics [HEAP0]);
1952 downheap (periodics, periodiccnt, HEAP0); 3589 downheap (periodics, periodiccnt, HEAP0);
1953 } 3590 }
1954 else if (w->interval) 3591 else if (w->interval)
1955 { 3592 {
1956 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3593 periodic_recalc (EV_A_ w);
1957 /* if next trigger time is not sufficiently in the future, put it there */
1958 /* this might happen because of floating point inexactness */
1959 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1960 {
1961 ev_at (w) += w->interval;
1962
1963 /* if interval is unreasonably low we might still have a time in the past */
1964 /* so correct this. this will make the periodic very inexact, but the user */
1965 /* has effectively asked to get triggered more often than possible */
1966 if (ev_at (w) < ev_rt_now)
1967 ev_at (w) = ev_rt_now;
1968 }
1969
1970 ANHE_at_cache (periodics [HEAP0]); 3594 ANHE_at_cache (periodics [HEAP0]);
1971 downheap (periodics, periodiccnt, HEAP0); 3595 downheap (periodics, periodiccnt, HEAP0);
1972 } 3596 }
1973 else 3597 else
1974 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3598 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
1981 feed_reverse_done (EV_A_ EV_PERIODIC); 3605 feed_reverse_done (EV_A_ EV_PERIODIC);
1982 } 3606 }
1983} 3607}
1984 3608
1985/* simply recalculate all periodics */ 3609/* simply recalculate all periodics */
1986/* 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? */
1987static void noinline 3611ecb_noinline ecb_cold
3612static void
1988periodics_reschedule (EV_P) 3613periodics_reschedule (EV_P)
1989{ 3614{
1990 int i; 3615 int i;
1991 3616
1992 /* adjust periodics after time jump */ 3617 /* adjust periodics after time jump */
… …
1995 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3620 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1996 3621
1997 if (w->reschedule_cb) 3622 if (w->reschedule_cb)
1998 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3623 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1999 else if (w->interval) 3624 else if (w->interval)
2000 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3625 periodic_recalc (EV_A_ w);
2001 3626
2002 ANHE_at_cache (periodics [i]); 3627 ANHE_at_cache (periodics [i]);
2003 } 3628 }
2004 3629
2005 reheap (periodics, periodiccnt); 3630 reheap (periodics, periodiccnt);
2006} 3631}
2007#endif 3632#endif
2008 3633
2009/* adjust all timers by a given offset */ 3634/* adjust all timers by a given offset */
2010static void noinline 3635ecb_noinline ecb_cold
3636static void
2011timers_reschedule (EV_P_ ev_tstamp adjust) 3637timers_reschedule (EV_P_ ev_tstamp adjust)
2012{ 3638{
2013 int i; 3639 int i;
2014 3640
2015 for (i = 0; i < timercnt; ++i) 3641 for (i = 0; i < timercnt; ++i)
… …
2019 ANHE_at_cache (*he); 3645 ANHE_at_cache (*he);
2020 } 3646 }
2021} 3647}
2022 3648
2023/* fetch new monotonic and realtime times from the kernel */ 3649/* fetch new monotonic and realtime times from the kernel */
2024/* also detetc if there was a timejump, and act accordingly */ 3650/* also detect if there was a timejump, and act accordingly */
2025inline_speed void 3651inline_speed void
2026time_update (EV_P_ ev_tstamp max_block) 3652time_update (EV_P_ ev_tstamp max_block)
2027{ 3653{
2028#if EV_USE_MONOTONIC 3654#if EV_USE_MONOTONIC
2029 if (expect_true (have_monotonic)) 3655 if (ecb_expect_true (have_monotonic))
2030 { 3656 {
2031 int i; 3657 int i;
2032 ev_tstamp odiff = rtmn_diff; 3658 ev_tstamp odiff = rtmn_diff;
2033 3659
2034 mn_now = get_clock (); 3660 mn_now = get_clock ();
2035 3661
2036 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3662 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
2037 /* interpolate in the meantime */ 3663 /* interpolate in the meantime */
2038 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 3664 if (ecb_expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
2039 { 3665 {
2040 ev_rt_now = rtmn_diff + mn_now; 3666 ev_rt_now = rtmn_diff + mn_now;
2041 return; 3667 return;
2042 } 3668 }
2043 3669
… …
2052 * 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
2053 * in the unlikely event of having been preempted here. 3679 * in the unlikely event of having been preempted here.
2054 */ 3680 */
2055 for (i = 4; --i; ) 3681 for (i = 4; --i; )
2056 { 3682 {
3683 ev_tstamp diff;
2057 rtmn_diff = ev_rt_now - mn_now; 3684 rtmn_diff = ev_rt_now - mn_now;
2058 3685
3686 diff = odiff - rtmn_diff;
3687
2059 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3688 if (ecb_expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2060 return; /* all is well */ 3689 return; /* all is well */
2061 3690
2062 ev_rt_now = ev_time (); 3691 ev_rt_now = ev_time ();
2063 mn_now = get_clock (); 3692 mn_now = get_clock ();
2064 now_floor = mn_now; 3693 now_floor = mn_now;
… …
2073 else 3702 else
2074#endif 3703#endif
2075 { 3704 {
2076 ev_rt_now = ev_time (); 3705 ev_rt_now = ev_time ();
2077 3706
2078 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))
2079 { 3708 {
2080 /* 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 */
2081 timers_reschedule (EV_A_ ev_rt_now - mn_now); 3710 timers_reschedule (EV_A_ ev_rt_now - mn_now);
2082#if EV_PERIODIC_ENABLE 3711#if EV_PERIODIC_ENABLE
2083 periodics_reschedule (EV_A); 3712 periodics_reschedule (EV_A);
… …
2086 3715
2087 mn_now = ev_rt_now; 3716 mn_now = ev_rt_now;
2088 } 3717 }
2089} 3718}
2090 3719
2091void 3720int
2092ev_loop (EV_P_ int flags) 3721ev_run (EV_P_ int flags)
2093{ 3722{
2094#if EV_MINIMAL < 2 3723#if EV_FEATURE_API
2095 ++loop_depth; 3724 ++loop_depth;
2096#endif 3725#endif
2097 3726
2098 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));
2099 3728
2100 loop_done = EVUNLOOP_CANCEL; 3729 loop_done = EVBREAK_CANCEL;
2101 3730
2102 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 */
2103 3732
2104 do 3733 do
2105 { 3734 {
2106#if EV_VERIFY >= 2 3735#if EV_VERIFY >= 2
2107 ev_loop_verify (EV_A); 3736 ev_verify (EV_A);
2108#endif 3737#endif
2109 3738
2110#ifndef _WIN32 3739#ifndef _WIN32
2111 if (expect_false (curpid)) /* penalise the forking check even more */ 3740 if (ecb_expect_false (curpid)) /* penalise the forking check even more */
2112 if (expect_false (getpid () != curpid)) 3741 if (ecb_expect_false (getpid () != curpid))
2113 { 3742 {
2114 curpid = getpid (); 3743 curpid = getpid ();
2115 postfork = 1; 3744 postfork = 1;
2116 } 3745 }
2117#endif 3746#endif
2118 3747
2119#if EV_FORK_ENABLE 3748#if EV_FORK_ENABLE
2120 /* we might have forked, so queue fork handlers */ 3749 /* we might have forked, so queue fork handlers */
2121 if (expect_false (postfork)) 3750 if (ecb_expect_false (postfork))
2122 if (forkcnt) 3751 if (forkcnt)
2123 { 3752 {
2124 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3753 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2125 EV_INVOKE_PENDING; 3754 EV_INVOKE_PENDING;
2126 } 3755 }
2127#endif 3756#endif
2128 3757
3758#if EV_PREPARE_ENABLE
2129 /* queue prepare watchers (and execute them) */ 3759 /* queue prepare watchers (and execute them) */
2130 if (expect_false (preparecnt)) 3760 if (ecb_expect_false (preparecnt))
2131 { 3761 {
2132 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3762 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2133 EV_INVOKE_PENDING; 3763 EV_INVOKE_PENDING;
2134 } 3764 }
3765#endif
2135 3766
2136 if (expect_false (loop_done)) 3767 if (ecb_expect_false (loop_done))
2137 break; 3768 break;
2138 3769
2139 /* we might have forked, so reify kernel state if necessary */ 3770 /* we might have forked, so reify kernel state if necessary */
2140 if (expect_false (postfork)) 3771 if (ecb_expect_false (postfork))
2141 loop_fork (EV_A); 3772 loop_fork (EV_A);
2142 3773
2143 /* update fd-related kernel structures */ 3774 /* update fd-related kernel structures */
2144 fd_reify (EV_A); 3775 fd_reify (EV_A);
2145 3776
2146 /* calculate blocking time */ 3777 /* calculate blocking time */
2147 { 3778 {
2148 ev_tstamp waittime = 0.; 3779 ev_tstamp waittime = 0.;
2149 ev_tstamp sleeptime = 0.; 3780 ev_tstamp sleeptime = 0.;
2150 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
2151 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3793 if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2152 { 3794 {
2153 /* remember old timestamp for io_blocktime calculation */
2154 ev_tstamp prev_mn_now = mn_now;
2155
2156 /* update time to cancel out callback processing overhead */
2157 time_update (EV_A_ 1e100);
2158
2159 waittime = MAX_BLOCKTIME; 3795 waittime = MAX_BLOCKTIME;
2160 3796
2161 if (timercnt) 3797 if (timercnt)
2162 { 3798 {
2163 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3799 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2164 if (waittime > to) waittime = to; 3800 if (waittime > to) waittime = to;
2165 } 3801 }
2166 3802
2167#if EV_PERIODIC_ENABLE 3803#if EV_PERIODIC_ENABLE
2168 if (periodiccnt) 3804 if (periodiccnt)
2169 { 3805 {
2170 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3806 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2171 if (waittime > to) waittime = to; 3807 if (waittime > to) waittime = to;
2172 } 3808 }
2173#endif 3809#endif
2174 3810
2175 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3811 /* don't let timeouts decrease the waittime below timeout_blocktime */
2176 if (expect_false (waittime < timeout_blocktime)) 3812 if (ecb_expect_false (waittime < timeout_blocktime))
2177 waittime = timeout_blocktime; 3813 waittime = timeout_blocktime;
2178 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
2179 /* extra check because io_blocktime is commonly 0 */ 3820 /* extra check because io_blocktime is commonly 0 */
2180 if (expect_false (io_blocktime)) 3821 if (ecb_expect_false (io_blocktime))
2181 { 3822 {
2182 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3823 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2183 3824
2184 if (sleeptime > waittime - backend_fudge) 3825 if (sleeptime > waittime - backend_mintime)
2185 sleeptime = waittime - backend_fudge; 3826 sleeptime = waittime - backend_mintime;
2186 3827
2187 if (expect_true (sleeptime > 0.)) 3828 if (ecb_expect_true (sleeptime > 0.))
2188 { 3829 {
2189 ev_sleep (sleeptime); 3830 ev_sleep (sleeptime);
2190 waittime -= sleeptime; 3831 waittime -= sleeptime;
2191 } 3832 }
2192 } 3833 }
2193 } 3834 }
2194 3835
2195#if EV_MINIMAL < 2 3836#if EV_FEATURE_API
2196 ++loop_count; 3837 ++loop_count;
2197#endif 3838#endif
2198 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3839 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2199 backend_poll (EV_A_ waittime); 3840 backend_poll (EV_A_ waittime);
2200 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 }
2201 3851
2202 /* update ev_rt_now, do magic */ 3852 /* update ev_rt_now, do magic */
2203 time_update (EV_A_ waittime + sleeptime); 3853 time_update (EV_A_ waittime + sleeptime);
2204 } 3854 }
2205 3855
… …
2212#if EV_IDLE_ENABLE 3862#if EV_IDLE_ENABLE
2213 /* queue idle watchers unless other events are pending */ 3863 /* queue idle watchers unless other events are pending */
2214 idle_reify (EV_A); 3864 idle_reify (EV_A);
2215#endif 3865#endif
2216 3866
3867#if EV_CHECK_ENABLE
2217 /* queue check watchers, to be executed first */ 3868 /* queue check watchers, to be executed first */
2218 if (expect_false (checkcnt)) 3869 if (ecb_expect_false (checkcnt))
2219 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3870 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3871#endif
2220 3872
2221 EV_INVOKE_PENDING; 3873 EV_INVOKE_PENDING;
2222 } 3874 }
2223 while (expect_true ( 3875 while (ecb_expect_true (
2224 activecnt 3876 activecnt
2225 && !loop_done 3877 && !loop_done
2226 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3878 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2227 )); 3879 ));
2228 3880
2229 if (loop_done == EVUNLOOP_ONE) 3881 if (loop_done == EVBREAK_ONE)
2230 loop_done = EVUNLOOP_CANCEL; 3882 loop_done = EVBREAK_CANCEL;
2231 3883
2232#if EV_MINIMAL < 2 3884#if EV_FEATURE_API
2233 --loop_depth; 3885 --loop_depth;
2234#endif 3886#endif
2235}
2236 3887
3888 return activecnt;
3889}
3890
2237void 3891void
2238ev_unloop (EV_P_ int how) 3892ev_break (EV_P_ int how) EV_NOEXCEPT
2239{ 3893{
2240 loop_done = how; 3894 loop_done = how;
2241} 3895}
2242 3896
2243void 3897void
2244ev_ref (EV_P) 3898ev_ref (EV_P) EV_NOEXCEPT
2245{ 3899{
2246 ++activecnt; 3900 ++activecnt;
2247} 3901}
2248 3902
2249void 3903void
2250ev_unref (EV_P) 3904ev_unref (EV_P) EV_NOEXCEPT
2251{ 3905{
2252 --activecnt; 3906 --activecnt;
2253} 3907}
2254 3908
2255void 3909void
2256ev_now_update (EV_P) 3910ev_now_update (EV_P) EV_NOEXCEPT
2257{ 3911{
2258 time_update (EV_A_ 1e100); 3912 time_update (EV_A_ 1e100);
2259} 3913}
2260 3914
2261void 3915void
2262ev_suspend (EV_P) 3916ev_suspend (EV_P) EV_NOEXCEPT
2263{ 3917{
2264 ev_now_update (EV_A); 3918 ev_now_update (EV_A);
2265} 3919}
2266 3920
2267void 3921void
2268ev_resume (EV_P) 3922ev_resume (EV_P) EV_NOEXCEPT
2269{ 3923{
2270 ev_tstamp mn_prev = mn_now; 3924 ev_tstamp mn_prev = mn_now;
2271 3925
2272 ev_now_update (EV_A); 3926 ev_now_update (EV_A);
2273 timers_reschedule (EV_A_ mn_now - mn_prev); 3927 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2290inline_size void 3944inline_size void
2291wlist_del (WL *head, WL elem) 3945wlist_del (WL *head, WL elem)
2292{ 3946{
2293 while (*head) 3947 while (*head)
2294 { 3948 {
2295 if (*head == elem) 3949 if (ecb_expect_true (*head == elem))
2296 { 3950 {
2297 *head = elem->next; 3951 *head = elem->next;
2298 return; 3952 break;
2299 } 3953 }
2300 3954
2301 head = &(*head)->next; 3955 head = &(*head)->next;
2302 } 3956 }
2303} 3957}
… …
2312 w->pending = 0; 3966 w->pending = 0;
2313 } 3967 }
2314} 3968}
2315 3969
2316int 3970int
2317ev_clear_pending (EV_P_ void *w) 3971ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
2318{ 3972{
2319 W w_ = (W)w; 3973 W w_ = (W)w;
2320 int pending = w_->pending; 3974 int pending = w_->pending;
2321 3975
2322 if (expect_true (pending)) 3976 if (ecb_expect_true (pending))
2323 { 3977 {
2324 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 3978 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2325 p->w = (W)&pending_w; 3979 p->w = (W)&pending_w;
2326 w_->pending = 0; 3980 w_->pending = 0;
2327 return p->events; 3981 return p->events;
… …
2354 w->active = 0; 4008 w->active = 0;
2355} 4009}
2356 4010
2357/*****************************************************************************/ 4011/*****************************************************************************/
2358 4012
2359void noinline 4013ecb_noinline
4014void
2360ev_io_start (EV_P_ ev_io *w) 4015ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
2361{ 4016{
2362 int fd = w->fd; 4017 int fd = w->fd;
2363 4018
2364 if (expect_false (ev_is_active (w))) 4019 if (ecb_expect_false (ev_is_active (w)))
2365 return; 4020 return;
2366 4021
2367 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 4022 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2368 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))));
2369 4024
4025#if EV_VERIFY >= 2
4026 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
4027#endif
2370 EV_FREQUENT_CHECK; 4028 EV_FREQUENT_CHECK;
2371 4029
2372 ev_start (EV_A_ (W)w, 1); 4030 ev_start (EV_A_ (W)w, 1);
2373 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 4031 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
2374 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));
2375 4036
2376 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);
2377 w->events &= ~EV__IOFDSET; 4038 w->events &= ~EV__IOFDSET;
2378 4039
2379 EV_FREQUENT_CHECK; 4040 EV_FREQUENT_CHECK;
2380} 4041}
2381 4042
2382void noinline 4043ecb_noinline
4044void
2383ev_io_stop (EV_P_ ev_io *w) 4045ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
2384{ 4046{
2385 clear_pending (EV_A_ (W)w); 4047 clear_pending (EV_A_ (W)w);
2386 if (expect_false (!ev_is_active (w))) 4048 if (ecb_expect_false (!ev_is_active (w)))
2387 return; 4049 return;
2388 4050
2389 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));
2390 4052
4053#if EV_VERIFY >= 2
4054 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
4055#endif
2391 EV_FREQUENT_CHECK; 4056 EV_FREQUENT_CHECK;
2392 4057
2393 wlist_del (&anfds[w->fd].head, (WL)w); 4058 wlist_del (&anfds[w->fd].head, (WL)w);
2394 ev_stop (EV_A_ (W)w); 4059 ev_stop (EV_A_ (W)w);
2395 4060
2396 fd_change (EV_A_ w->fd, 1); 4061 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2397 4062
2398 EV_FREQUENT_CHECK; 4063 EV_FREQUENT_CHECK;
2399} 4064}
2400 4065
2401void noinline 4066ecb_noinline
4067void
2402ev_timer_start (EV_P_ ev_timer *w) 4068ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
2403{ 4069{
2404 if (expect_false (ev_is_active (w))) 4070 if (ecb_expect_false (ev_is_active (w)))
2405 return; 4071 return;
2406 4072
2407 ev_at (w) += mn_now; 4073 ev_at (w) += mn_now;
2408 4074
2409 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.));
2410 4076
2411 EV_FREQUENT_CHECK; 4077 EV_FREQUENT_CHECK;
2412 4078
2413 ++timercnt; 4079 ++timercnt;
2414 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 4080 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
2415 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 4081 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
2416 ANHE_w (timers [ev_active (w)]) = (WT)w; 4082 ANHE_w (timers [ev_active (w)]) = (WT)w;
2417 ANHE_at_cache (timers [ev_active (w)]); 4083 ANHE_at_cache (timers [ev_active (w)]);
2418 upheap (timers, ev_active (w)); 4084 upheap (timers, ev_active (w));
2419 4085
2420 EV_FREQUENT_CHECK; 4086 EV_FREQUENT_CHECK;
2421 4087
2422 /*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));*/
2423} 4089}
2424 4090
2425void noinline 4091ecb_noinline
4092void
2426ev_timer_stop (EV_P_ ev_timer *w) 4093ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
2427{ 4094{
2428 clear_pending (EV_A_ (W)w); 4095 clear_pending (EV_A_ (W)w);
2429 if (expect_false (!ev_is_active (w))) 4096 if (ecb_expect_false (!ev_is_active (w)))
2430 return; 4097 return;
2431 4098
2432 EV_FREQUENT_CHECK; 4099 EV_FREQUENT_CHECK;
2433 4100
2434 { 4101 {
… …
2436 4103
2437 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));
2438 4105
2439 --timercnt; 4106 --timercnt;
2440 4107
2441 if (expect_true (active < timercnt + HEAP0)) 4108 if (ecb_expect_true (active < timercnt + HEAP0))
2442 { 4109 {
2443 timers [active] = timers [timercnt + HEAP0]; 4110 timers [active] = timers [timercnt + HEAP0];
2444 adjustheap (timers, timercnt, active); 4111 adjustheap (timers, timercnt, active);
2445 } 4112 }
2446 } 4113 }
2447 4114
2448 EV_FREQUENT_CHECK;
2449
2450 ev_at (w) -= mn_now; 4115 ev_at (w) -= mn_now;
2451 4116
2452 ev_stop (EV_A_ (W)w); 4117 ev_stop (EV_A_ (W)w);
2453}
2454 4118
2455void noinline 4119 EV_FREQUENT_CHECK;
4120}
4121
4122ecb_noinline
4123void
2456ev_timer_again (EV_P_ ev_timer *w) 4124ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
2457{ 4125{
2458 EV_FREQUENT_CHECK; 4126 EV_FREQUENT_CHECK;
4127
4128 clear_pending (EV_A_ (W)w);
2459 4129
2460 if (ev_is_active (w)) 4130 if (ev_is_active (w))
2461 { 4131 {
2462 if (w->repeat) 4132 if (w->repeat)
2463 { 4133 {
… …
2475 } 4145 }
2476 4146
2477 EV_FREQUENT_CHECK; 4147 EV_FREQUENT_CHECK;
2478} 4148}
2479 4149
4150ev_tstamp
4151ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
4152{
4153 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
4154}
4155
2480#if EV_PERIODIC_ENABLE 4156#if EV_PERIODIC_ENABLE
2481void noinline 4157ecb_noinline
4158void
2482ev_periodic_start (EV_P_ ev_periodic *w) 4159ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
2483{ 4160{
2484 if (expect_false (ev_is_active (w))) 4161 if (ecb_expect_false (ev_is_active (w)))
2485 return; 4162 return;
2486 4163
2487 if (w->reschedule_cb) 4164 if (w->reschedule_cb)
2488 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4165 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2489 else if (w->interval) 4166 else if (w->interval)
2490 { 4167 {
2491 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.));
2492 /* this formula differs from the one in periodic_reify because we do not always round up */ 4169 periodic_recalc (EV_A_ w);
2493 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2494 } 4170 }
2495 else 4171 else
2496 ev_at (w) = w->offset; 4172 ev_at (w) = w->offset;
2497 4173
2498 EV_FREQUENT_CHECK; 4174 EV_FREQUENT_CHECK;
2499 4175
2500 ++periodiccnt; 4176 ++periodiccnt;
2501 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4177 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2502 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4178 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
2503 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4179 ANHE_w (periodics [ev_active (w)]) = (WT)w;
2504 ANHE_at_cache (periodics [ev_active (w)]); 4180 ANHE_at_cache (periodics [ev_active (w)]);
2505 upheap (periodics, ev_active (w)); 4181 upheap (periodics, ev_active (w));
2506 4182
2507 EV_FREQUENT_CHECK; 4183 EV_FREQUENT_CHECK;
2508 4184
2509 /*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));*/
2510} 4186}
2511 4187
2512void noinline 4188ecb_noinline
4189void
2513ev_periodic_stop (EV_P_ ev_periodic *w) 4190ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
2514{ 4191{
2515 clear_pending (EV_A_ (W)w); 4192 clear_pending (EV_A_ (W)w);
2516 if (expect_false (!ev_is_active (w))) 4193 if (ecb_expect_false (!ev_is_active (w)))
2517 return; 4194 return;
2518 4195
2519 EV_FREQUENT_CHECK; 4196 EV_FREQUENT_CHECK;
2520 4197
2521 { 4198 {
… …
2523 4200
2524 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));
2525 4202
2526 --periodiccnt; 4203 --periodiccnt;
2527 4204
2528 if (expect_true (active < periodiccnt + HEAP0)) 4205 if (ecb_expect_true (active < periodiccnt + HEAP0))
2529 { 4206 {
2530 periodics [active] = periodics [periodiccnt + HEAP0]; 4207 periodics [active] = periodics [periodiccnt + HEAP0];
2531 adjustheap (periodics, periodiccnt, active); 4208 adjustheap (periodics, periodiccnt, active);
2532 } 4209 }
2533 } 4210 }
2534 4211
2535 EV_FREQUENT_CHECK;
2536
2537 ev_stop (EV_A_ (W)w); 4212 ev_stop (EV_A_ (W)w);
2538}
2539 4213
2540void noinline 4214 EV_FREQUENT_CHECK;
4215}
4216
4217ecb_noinline
4218void
2541ev_periodic_again (EV_P_ ev_periodic *w) 4219ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
2542{ 4220{
2543 /* TODO: use adjustheap and recalculation */ 4221 /* TODO: use adjustheap and recalculation */
2544 ev_periodic_stop (EV_A_ w); 4222 ev_periodic_stop (EV_A_ w);
2545 ev_periodic_start (EV_A_ w); 4223 ev_periodic_start (EV_A_ w);
2546} 4224}
… …
2548 4226
2549#ifndef SA_RESTART 4227#ifndef SA_RESTART
2550# define SA_RESTART 0 4228# define SA_RESTART 0
2551#endif 4229#endif
2552 4230
2553void noinline 4231#if EV_SIGNAL_ENABLE
4232
4233ecb_noinline
4234void
2554ev_signal_start (EV_P_ ev_signal *w) 4235ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
2555{ 4236{
4237 if (ecb_expect_false (ev_is_active (w)))
4238 return;
4239
4240 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
4241
2556#if EV_MULTIPLICITY 4242#if EV_MULTIPLICITY
2557 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4243 assert (("libev: a signal must not be attached to two different loops",
2558#endif 4244 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2559 if (expect_false (ev_is_active (w)))
2560 return;
2561 4245
2562 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0)); 4246 signals [w->signum - 1].loop = EV_A;
4247 ECB_MEMORY_FENCE_RELEASE;
4248#endif
2563 4249
2564 evpipe_init (EV_A);
2565
2566 EV_FREQUENT_CHECK; 4250 EV_FREQUENT_CHECK;
2567 4251
4252#if EV_USE_SIGNALFD
4253 if (sigfd == -2)
2568 { 4254 {
2569#ifndef _WIN32 4255 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2570 sigset_t full, prev; 4256 if (sigfd < 0 && errno == EINVAL)
2571 sigfillset (&full); 4257 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2572 sigprocmask (SIG_SETMASK, &full, &prev);
2573#endif
2574 4258
2575 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); 4259 if (sigfd >= 0)
4260 {
4261 fd_intern (sigfd); /* doing it twice will not hurt */
2576 4262
2577#ifndef _WIN32 4263 sigemptyset (&sigfd_set);
2578 sigprocmask (SIG_SETMASK, &prev, 0); 4264
2579#endif 4265 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
4266 ev_set_priority (&sigfd_w, EV_MAXPRI);
4267 ev_io_start (EV_A_ &sigfd_w);
4268 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
4269 }
2580 } 4270 }
4271
4272 if (sigfd >= 0)
4273 {
4274 /* TODO: check .head */
4275 sigaddset (&sigfd_set, w->signum);
4276 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
4277
4278 signalfd (sigfd, &sigfd_set, 0);
4279 }
4280#endif
2581 4281
2582 ev_start (EV_A_ (W)w, 1); 4282 ev_start (EV_A_ (W)w, 1);
2583 wlist_add (&signals [w->signum - 1].head, (WL)w); 4283 wlist_add (&signals [w->signum - 1].head, (WL)w);
2584 4284
2585 if (!((WL)w)->next) 4285 if (!((WL)w)->next)
4286# if EV_USE_SIGNALFD
4287 if (sigfd < 0) /*TODO*/
4288# endif
2586 { 4289 {
2587#if _WIN32 4290# ifdef _WIN32
4291 evpipe_init (EV_A);
4292
2588 signal (w->signum, ev_sighandler); 4293 signal (w->signum, ev_sighandler);
2589#else 4294# else
2590 struct sigaction sa = { }; 4295 struct sigaction sa;
4296
4297 evpipe_init (EV_A);
4298
2591 sa.sa_handler = ev_sighandler; 4299 sa.sa_handler = ev_sighandler;
2592 sigfillset (&sa.sa_mask); 4300 sigfillset (&sa.sa_mask);
2593 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 */
2594 sigaction (w->signum, &sa, 0); 4302 sigaction (w->signum, &sa, 0);
4303
4304 if (origflags & EVFLAG_NOSIGMASK)
4305 {
4306 sigemptyset (&sa.sa_mask);
4307 sigaddset (&sa.sa_mask, w->signum);
4308 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
4309 }
2595#endif 4310#endif
2596 } 4311 }
2597 4312
2598 EV_FREQUENT_CHECK; 4313 EV_FREQUENT_CHECK;
2599} 4314}
2600 4315
2601void noinline 4316ecb_noinline
4317void
2602ev_signal_stop (EV_P_ ev_signal *w) 4318ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
2603{ 4319{
2604 clear_pending (EV_A_ (W)w); 4320 clear_pending (EV_A_ (W)w);
2605 if (expect_false (!ev_is_active (w))) 4321 if (ecb_expect_false (!ev_is_active (w)))
2606 return; 4322 return;
2607 4323
2608 EV_FREQUENT_CHECK; 4324 EV_FREQUENT_CHECK;
2609 4325
2610 wlist_del (&signals [w->signum - 1].head, (WL)w); 4326 wlist_del (&signals [w->signum - 1].head, (WL)w);
2611 ev_stop (EV_A_ (W)w); 4327 ev_stop (EV_A_ (W)w);
2612 4328
2613 if (!signals [w->signum - 1].head) 4329 if (!signals [w->signum - 1].head)
4330 {
4331#if EV_MULTIPLICITY
4332 signals [w->signum - 1].loop = 0; /* unattach from signal */
4333#endif
4334#if EV_USE_SIGNALFD
4335 if (sigfd >= 0)
4336 {
4337 sigset_t ss;
4338
4339 sigemptyset (&ss);
4340 sigaddset (&ss, w->signum);
4341 sigdelset (&sigfd_set, w->signum);
4342
4343 signalfd (sigfd, &sigfd_set, 0);
4344 sigprocmask (SIG_UNBLOCK, &ss, 0);
4345 }
4346 else
4347#endif
2614 signal (w->signum, SIG_DFL); 4348 signal (w->signum, SIG_DFL);
4349 }
2615 4350
2616 EV_FREQUENT_CHECK; 4351 EV_FREQUENT_CHECK;
2617} 4352}
2618 4353
4354#endif
4355
4356#if EV_CHILD_ENABLE
4357
2619void 4358void
2620ev_child_start (EV_P_ ev_child *w) 4359ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
2621{ 4360{
2622#if EV_MULTIPLICITY 4361#if EV_MULTIPLICITY
2623 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));
2624#endif 4363#endif
2625 if (expect_false (ev_is_active (w))) 4364 if (ecb_expect_false (ev_is_active (w)))
2626 return; 4365 return;
2627 4366
2628 EV_FREQUENT_CHECK; 4367 EV_FREQUENT_CHECK;
2629 4368
2630 ev_start (EV_A_ (W)w, 1); 4369 ev_start (EV_A_ (W)w, 1);
2631 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4370 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2632 4371
2633 EV_FREQUENT_CHECK; 4372 EV_FREQUENT_CHECK;
2634} 4373}
2635 4374
2636void 4375void
2637ev_child_stop (EV_P_ ev_child *w) 4376ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
2638{ 4377{
2639 clear_pending (EV_A_ (W)w); 4378 clear_pending (EV_A_ (W)w);
2640 if (expect_false (!ev_is_active (w))) 4379 if (ecb_expect_false (!ev_is_active (w)))
2641 return; 4380 return;
2642 4381
2643 EV_FREQUENT_CHECK; 4382 EV_FREQUENT_CHECK;
2644 4383
2645 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4384 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2646 ev_stop (EV_A_ (W)w); 4385 ev_stop (EV_A_ (W)w);
2647 4386
2648 EV_FREQUENT_CHECK; 4387 EV_FREQUENT_CHECK;
2649} 4388}
4389
4390#endif
2650 4391
2651#if EV_STAT_ENABLE 4392#if EV_STAT_ENABLE
2652 4393
2653# ifdef _WIN32 4394# ifdef _WIN32
2654# undef lstat 4395# undef lstat
… …
2657 4398
2658#define DEF_STAT_INTERVAL 5.0074891 4399#define DEF_STAT_INTERVAL 5.0074891
2659#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4400#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2660#define MIN_STAT_INTERVAL 0.1074891 4401#define MIN_STAT_INTERVAL 0.1074891
2661 4402
2662static 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);
2663 4404
2664#if EV_USE_INOTIFY 4405#if EV_USE_INOTIFY
2665# define EV_INOTIFY_BUFSIZE 8192
2666 4406
2667static 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
2668infy_add (EV_P_ ev_stat *w) 4412infy_add (EV_P_ ev_stat *w)
2669{ 4413{
2670 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);
2671 4418
2672 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 */
2673 { 4445 }
4446 else
4447 {
4448 /* can't use inotify, continue to stat */
2674 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4449 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2675 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2676 4450
2677 /* monitor some parent directory for speedup hints */ 4451 /* if path is not there, monitor some parent directory for speedup hints */
2678 /* 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, */
2679 /* but an efficiency issue only */ 4453 /* but an efficiency issue only */
2680 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 4454 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2681 { 4455 {
2682 char path [4096]; 4456 char path [4096];
… …
2692 if (!pend || pend == path) 4466 if (!pend || pend == path)
2693 break; 4467 break;
2694 4468
2695 *pend = 0; 4469 *pend = 0;
2696 w->wd = inotify_add_watch (fs_fd, path, mask); 4470 w->wd = inotify_add_watch (fs_fd, path, mask);
2697 } 4471 }
2698 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 4472 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2699 } 4473 }
2700 } 4474 }
2701 4475
2702 if (w->wd >= 0) 4476 if (w->wd >= 0)
2703 {
2704 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);
2705 4478
2706 /* now local changes will be tracked by inotify, but remote changes won't */ 4479 /* now re-arm timer, if required */
2707 /* unless the filesystem it known to be local, we therefore still poll */ 4480 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2708 /* also do poll on <2.6.25, but with normal frequency */
2709 struct statfs sfs;
2710
2711 if (fs_2625 && !statfs (w->path, &sfs))
2712 if (sfs.f_type == 0x1373 /* devfs */
2713 || sfs.f_type == 0xEF53 /* ext2/3 */
2714 || sfs.f_type == 0x3153464a /* jfs */
2715 || sfs.f_type == 0x52654973 /* reiser3 */
2716 || sfs.f_type == 0x01021994 /* tempfs */
2717 || sfs.f_type == 0x58465342 /* xfs */)
2718 return;
2719
2720 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2721 ev_timer_again (EV_A_ &w->timer); 4481 ev_timer_again (EV_A_ &w->timer);
2722 } 4482 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2723} 4483}
2724 4484
2725static void noinline 4485ecb_noinline
4486static void
2726infy_del (EV_P_ ev_stat *w) 4487infy_del (EV_P_ ev_stat *w)
2727{ 4488{
2728 int slot; 4489 int slot;
2729 int wd = w->wd; 4490 int wd = w->wd;
2730 4491
2731 if (wd < 0) 4492 if (wd < 0)
2732 return; 4493 return;
2733 4494
2734 w->wd = -2; 4495 w->wd = -2;
2735 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 4496 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2736 wlist_del (&fs_hash [slot].head, (WL)w); 4497 wlist_del (&fs_hash [slot].head, (WL)w);
2737 4498
2738 /* remove this watcher, if others are watching it, they will rearm */ 4499 /* remove this watcher, if others are watching it, they will rearm */
2739 inotify_rm_watch (fs_fd, wd); 4500 inotify_rm_watch (fs_fd, wd);
2740} 4501}
2741 4502
2742static void noinline 4503ecb_noinline
4504static void
2743infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4505infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2744{ 4506{
2745 if (slot < 0) 4507 if (slot < 0)
2746 /* overflow, need to check for all hash slots */ 4508 /* overflow, need to check for all hash slots */
2747 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4509 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2748 infy_wd (EV_A_ slot, wd, ev); 4510 infy_wd (EV_A_ slot, wd, ev);
2749 else 4511 else
2750 { 4512 {
2751 WL w_; 4513 WL w_;
2752 4514
2753 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 4515 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2754 { 4516 {
2755 ev_stat *w = (ev_stat *)w_; 4517 ev_stat *w = (ev_stat *)w_;
2756 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 */
2757 4519
2758 if (w->wd == wd || wd == -1) 4520 if (w->wd == wd || wd == -1)
2759 { 4521 {
2760 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 4522 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2761 { 4523 {
2762 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);
2763 w->wd = -1; 4525 w->wd = -1;
2764 infy_add (EV_A_ w); /* re-add, no matter what */ 4526 infy_add (EV_A_ w); /* re-add, no matter what */
2765 } 4527 }
2766 4528
2767 stat_timer_cb (EV_A_ &w->timer, 0); 4529 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2772 4534
2773static void 4535static void
2774infy_cb (EV_P_ ev_io *w, int revents) 4536infy_cb (EV_P_ ev_io *w, int revents)
2775{ 4537{
2776 char buf [EV_INOTIFY_BUFSIZE]; 4538 char buf [EV_INOTIFY_BUFSIZE];
2777 struct inotify_event *ev = (struct inotify_event *)buf;
2778 int ofs; 4539 int ofs;
2779 int len = read (fs_fd, buf, sizeof (buf)); 4540 int len = read (fs_fd, buf, sizeof (buf));
2780 4541
2781 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);
2782 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 }
2783} 4548}
2784 4549
2785inline_size void 4550inline_size ecb_cold
4551void
2786check_2625 (EV_P) 4552ev_check_2625 (EV_P)
2787{ 4553{
2788 /* kernels < 2.6.25 are borked 4554 /* kernels < 2.6.25 are borked
2789 * 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
2790 */ 4556 */
2791 struct utsname buf; 4557 if (ev_linux_version () < 0x020619)
2792 int major, minor, micro;
2793
2794 if (uname (&buf))
2795 return; 4558 return;
2796 4559
2797 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2798 return;
2799
2800 if (major < 2
2801 || (major == 2 && minor < 6)
2802 || (major == 2 && minor == 6 && micro < 25))
2803 return;
2804
2805 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 ();
2806} 4572}
2807 4573
2808inline_size void 4574inline_size void
2809infy_init (EV_P) 4575infy_init (EV_P)
2810{ 4576{
2811 if (fs_fd != -2) 4577 if (fs_fd != -2)
2812 return; 4578 return;
2813 4579
2814 fs_fd = -1; 4580 fs_fd = -1;
2815 4581
2816 check_2625 (EV_A); 4582 ev_check_2625 (EV_A);
2817 4583
2818 fs_fd = inotify_init (); 4584 fs_fd = infy_newfd ();
2819 4585
2820 if (fs_fd >= 0) 4586 if (fs_fd >= 0)
2821 { 4587 {
4588 fd_intern (fs_fd);
2822 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 4589 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2823 ev_set_priority (&fs_w, EV_MAXPRI); 4590 ev_set_priority (&fs_w, EV_MAXPRI);
2824 ev_io_start (EV_A_ &fs_w); 4591 ev_io_start (EV_A_ &fs_w);
4592 ev_unref (EV_A);
2825 } 4593 }
2826} 4594}
2827 4595
2828inline_size void 4596inline_size void
2829infy_fork (EV_P) 4597infy_fork (EV_P)
… …
2831 int slot; 4599 int slot;
2832 4600
2833 if (fs_fd < 0) 4601 if (fs_fd < 0)
2834 return; 4602 return;
2835 4603
4604 ev_ref (EV_A);
4605 ev_io_stop (EV_A_ &fs_w);
2836 close (fs_fd); 4606 close (fs_fd);
2837 fs_fd = inotify_init (); 4607 fs_fd = infy_newfd ();
2838 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
2839 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4617 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2840 { 4618 {
2841 WL w_ = fs_hash [slot].head; 4619 WL w_ = fs_hash [slot].head;
2842 fs_hash [slot].head = 0; 4620 fs_hash [slot].head = 0;
2843 4621
2844 while (w_) 4622 while (w_)
… …
2849 w->wd = -1; 4627 w->wd = -1;
2850 4628
2851 if (fs_fd >= 0) 4629 if (fs_fd >= 0)
2852 infy_add (EV_A_ w); /* re-add, no matter what */ 4630 infy_add (EV_A_ w); /* re-add, no matter what */
2853 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);
2854 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 }
2855 } 4638 }
2856 } 4639 }
2857} 4640}
2858 4641
2859#endif 4642#endif
… …
2863#else 4646#else
2864# define EV_LSTAT(p,b) lstat (p, b) 4647# define EV_LSTAT(p,b) lstat (p, b)
2865#endif 4648#endif
2866 4649
2867void 4650void
2868ev_stat_stat (EV_P_ ev_stat *w) 4651ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
2869{ 4652{
2870 if (lstat (w->path, &w->attr) < 0) 4653 if (lstat (w->path, &w->attr) < 0)
2871 w->attr.st_nlink = 0; 4654 w->attr.st_nlink = 0;
2872 else if (!w->attr.st_nlink) 4655 else if (!w->attr.st_nlink)
2873 w->attr.st_nlink = 1; 4656 w->attr.st_nlink = 1;
2874} 4657}
2875 4658
2876static void noinline 4659ecb_noinline
4660static void
2877stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4661stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2878{ 4662{
2879 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4663 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2880 4664
2881 /* we copy this here each the time so that */ 4665 ev_statdata prev = w->attr;
2882 /* prev has the old value when the callback gets invoked */
2883 w->prev = w->attr;
2884 ev_stat_stat (EV_A_ w); 4666 ev_stat_stat (EV_A_ w);
2885 4667
2886 /* 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 */
2887 if ( 4669 if (
2888 w->prev.st_dev != w->attr.st_dev 4670 prev.st_dev != w->attr.st_dev
2889 || w->prev.st_ino != w->attr.st_ino 4671 || prev.st_ino != w->attr.st_ino
2890 || w->prev.st_mode != w->attr.st_mode 4672 || prev.st_mode != w->attr.st_mode
2891 || w->prev.st_nlink != w->attr.st_nlink 4673 || prev.st_nlink != w->attr.st_nlink
2892 || w->prev.st_uid != w->attr.st_uid 4674 || prev.st_uid != w->attr.st_uid
2893 || w->prev.st_gid != w->attr.st_gid 4675 || prev.st_gid != w->attr.st_gid
2894 || w->prev.st_rdev != w->attr.st_rdev 4676 || prev.st_rdev != w->attr.st_rdev
2895 || w->prev.st_size != w->attr.st_size 4677 || prev.st_size != w->attr.st_size
2896 || w->prev.st_atime != w->attr.st_atime 4678 || prev.st_atime != w->attr.st_atime
2897 || w->prev.st_mtime != w->attr.st_mtime 4679 || prev.st_mtime != w->attr.st_mtime
2898 || w->prev.st_ctime != w->attr.st_ctime 4680 || prev.st_ctime != w->attr.st_ctime
2899 ) { 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
2900 #if EV_USE_INOTIFY 4687 #if EV_USE_INOTIFY
2901 if (fs_fd >= 0) 4688 if (fs_fd >= 0)
2902 { 4689 {
2903 infy_del (EV_A_ w); 4690 infy_del (EV_A_ w);
2904 infy_add (EV_A_ w); 4691 infy_add (EV_A_ w);
… …
2909 ev_feed_event (EV_A_ w, EV_STAT); 4696 ev_feed_event (EV_A_ w, EV_STAT);
2910 } 4697 }
2911} 4698}
2912 4699
2913void 4700void
2914ev_stat_start (EV_P_ ev_stat *w) 4701ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
2915{ 4702{
2916 if (expect_false (ev_is_active (w))) 4703 if (ecb_expect_false (ev_is_active (w)))
2917 return; 4704 return;
2918 4705
2919 ev_stat_stat (EV_A_ w); 4706 ev_stat_stat (EV_A_ w);
2920 4707
2921 if (w->interval < MIN_STAT_INTERVAL && w->interval) 4708 if (w->interval < MIN_STAT_INTERVAL && w->interval)
… …
2929 4716
2930 if (fs_fd >= 0) 4717 if (fs_fd >= 0)
2931 infy_add (EV_A_ w); 4718 infy_add (EV_A_ w);
2932 else 4719 else
2933#endif 4720#endif
4721 {
2934 ev_timer_again (EV_A_ &w->timer); 4722 ev_timer_again (EV_A_ &w->timer);
4723 ev_unref (EV_A);
4724 }
2935 4725
2936 ev_start (EV_A_ (W)w, 1); 4726 ev_start (EV_A_ (W)w, 1);
2937 4727
2938 EV_FREQUENT_CHECK; 4728 EV_FREQUENT_CHECK;
2939} 4729}
2940 4730
2941void 4731void
2942ev_stat_stop (EV_P_ ev_stat *w) 4732ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
2943{ 4733{
2944 clear_pending (EV_A_ (W)w); 4734 clear_pending (EV_A_ (W)w);
2945 if (expect_false (!ev_is_active (w))) 4735 if (ecb_expect_false (!ev_is_active (w)))
2946 return; 4736 return;
2947 4737
2948 EV_FREQUENT_CHECK; 4738 EV_FREQUENT_CHECK;
2949 4739
2950#if EV_USE_INOTIFY 4740#if EV_USE_INOTIFY
2951 infy_del (EV_A_ w); 4741 infy_del (EV_A_ w);
2952#endif 4742#endif
4743
4744 if (ev_is_active (&w->timer))
4745 {
4746 ev_ref (EV_A);
2953 ev_timer_stop (EV_A_ &w->timer); 4747 ev_timer_stop (EV_A_ &w->timer);
4748 }
2954 4749
2955 ev_stop (EV_A_ (W)w); 4750 ev_stop (EV_A_ (W)w);
2956 4751
2957 EV_FREQUENT_CHECK; 4752 EV_FREQUENT_CHECK;
2958} 4753}
2959#endif 4754#endif
2960 4755
2961#if EV_IDLE_ENABLE 4756#if EV_IDLE_ENABLE
2962void 4757void
2963ev_idle_start (EV_P_ ev_idle *w) 4758ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
2964{ 4759{
2965 if (expect_false (ev_is_active (w))) 4760 if (ecb_expect_false (ev_is_active (w)))
2966 return; 4761 return;
2967 4762
2968 pri_adjust (EV_A_ (W)w); 4763 pri_adjust (EV_A_ (W)w);
2969 4764
2970 EV_FREQUENT_CHECK; 4765 EV_FREQUENT_CHECK;
… …
2973 int active = ++idlecnt [ABSPRI (w)]; 4768 int active = ++idlecnt [ABSPRI (w)];
2974 4769
2975 ++idleall; 4770 ++idleall;
2976 ev_start (EV_A_ (W)w, active); 4771 ev_start (EV_A_ (W)w, active);
2977 4772
2978 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);
2979 idles [ABSPRI (w)][active - 1] = w; 4774 idles [ABSPRI (w)][active - 1] = w;
2980 } 4775 }
2981 4776
2982 EV_FREQUENT_CHECK; 4777 EV_FREQUENT_CHECK;
2983} 4778}
2984 4779
2985void 4780void
2986ev_idle_stop (EV_P_ ev_idle *w) 4781ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
2987{ 4782{
2988 clear_pending (EV_A_ (W)w); 4783 clear_pending (EV_A_ (W)w);
2989 if (expect_false (!ev_is_active (w))) 4784 if (ecb_expect_false (!ev_is_active (w)))
2990 return; 4785 return;
2991 4786
2992 EV_FREQUENT_CHECK; 4787 EV_FREQUENT_CHECK;
2993 4788
2994 { 4789 {
… …
3003 4798
3004 EV_FREQUENT_CHECK; 4799 EV_FREQUENT_CHECK;
3005} 4800}
3006#endif 4801#endif
3007 4802
4803#if EV_PREPARE_ENABLE
3008void 4804void
3009ev_prepare_start (EV_P_ ev_prepare *w) 4805ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
3010{ 4806{
3011 if (expect_false (ev_is_active (w))) 4807 if (ecb_expect_false (ev_is_active (w)))
3012 return; 4808 return;
3013 4809
3014 EV_FREQUENT_CHECK; 4810 EV_FREQUENT_CHECK;
3015 4811
3016 ev_start (EV_A_ (W)w, ++preparecnt); 4812 ev_start (EV_A_ (W)w, ++preparecnt);
3017 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4813 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
3018 prepares [preparecnt - 1] = w; 4814 prepares [preparecnt - 1] = w;
3019 4815
3020 EV_FREQUENT_CHECK; 4816 EV_FREQUENT_CHECK;
3021} 4817}
3022 4818
3023void 4819void
3024ev_prepare_stop (EV_P_ ev_prepare *w) 4820ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
3025{ 4821{
3026 clear_pending (EV_A_ (W)w); 4822 clear_pending (EV_A_ (W)w);
3027 if (expect_false (!ev_is_active (w))) 4823 if (ecb_expect_false (!ev_is_active (w)))
3028 return; 4824 return;
3029 4825
3030 EV_FREQUENT_CHECK; 4826 EV_FREQUENT_CHECK;
3031 4827
3032 { 4828 {
… …
3038 4834
3039 ev_stop (EV_A_ (W)w); 4835 ev_stop (EV_A_ (W)w);
3040 4836
3041 EV_FREQUENT_CHECK; 4837 EV_FREQUENT_CHECK;
3042} 4838}
4839#endif
3043 4840
4841#if EV_CHECK_ENABLE
3044void 4842void
3045ev_check_start (EV_P_ ev_check *w) 4843ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
3046{ 4844{
3047 if (expect_false (ev_is_active (w))) 4845 if (ecb_expect_false (ev_is_active (w)))
3048 return; 4846 return;
3049 4847
3050 EV_FREQUENT_CHECK; 4848 EV_FREQUENT_CHECK;
3051 4849
3052 ev_start (EV_A_ (W)w, ++checkcnt); 4850 ev_start (EV_A_ (W)w, ++checkcnt);
3053 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 4851 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
3054 checks [checkcnt - 1] = w; 4852 checks [checkcnt - 1] = w;
3055 4853
3056 EV_FREQUENT_CHECK; 4854 EV_FREQUENT_CHECK;
3057} 4855}
3058 4856
3059void 4857void
3060ev_check_stop (EV_P_ ev_check *w) 4858ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
3061{ 4859{
3062 clear_pending (EV_A_ (W)w); 4860 clear_pending (EV_A_ (W)w);
3063 if (expect_false (!ev_is_active (w))) 4861 if (ecb_expect_false (!ev_is_active (w)))
3064 return; 4862 return;
3065 4863
3066 EV_FREQUENT_CHECK; 4864 EV_FREQUENT_CHECK;
3067 4865
3068 { 4866 {
… …
3074 4872
3075 ev_stop (EV_A_ (W)w); 4873 ev_stop (EV_A_ (W)w);
3076 4874
3077 EV_FREQUENT_CHECK; 4875 EV_FREQUENT_CHECK;
3078} 4876}
4877#endif
3079 4878
3080#if EV_EMBED_ENABLE 4879#if EV_EMBED_ENABLE
3081void noinline 4880ecb_noinline
4881void
3082ev_embed_sweep (EV_P_ ev_embed *w) 4882ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
3083{ 4883{
3084 ev_loop (w->other, EVLOOP_NONBLOCK); 4884 ev_run (w->other, EVRUN_NOWAIT);
3085} 4885}
3086 4886
3087static void 4887static void
3088embed_io_cb (EV_P_ ev_io *io, int revents) 4888embed_io_cb (EV_P_ ev_io *io, int revents)
3089{ 4889{
3090 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4890 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3091 4891
3092 if (ev_cb (w)) 4892 if (ev_cb (w))
3093 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4893 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3094 else 4894 else
3095 ev_loop (w->other, EVLOOP_NONBLOCK); 4895 ev_run (w->other, EVRUN_NOWAIT);
3096} 4896}
3097 4897
3098static void 4898static void
3099embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4899embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3100{ 4900{
3101 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 4901 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
3102 4902
3103 { 4903 {
3104 struct ev_loop *loop = w->other; 4904 EV_P = w->other;
3105 4905
3106 while (fdchangecnt) 4906 while (fdchangecnt)
3107 { 4907 {
3108 fd_reify (EV_A); 4908 fd_reify (EV_A);
3109 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4909 ev_run (EV_A_ EVRUN_NOWAIT);
3110 } 4910 }
3111 } 4911 }
3112} 4912}
3113 4913
3114static void 4914static void
… …
3117 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 4917 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3118 4918
3119 ev_embed_stop (EV_A_ w); 4919 ev_embed_stop (EV_A_ w);
3120 4920
3121 { 4921 {
3122 struct ev_loop *loop = w->other; 4922 EV_P = w->other;
3123 4923
3124 ev_loop_fork (EV_A); 4924 ev_loop_fork (EV_A);
3125 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4925 ev_run (EV_A_ EVRUN_NOWAIT);
3126 } 4926 }
3127 4927
3128 ev_embed_start (EV_A_ w); 4928 ev_embed_start (EV_A_ w);
3129} 4929}
3130 4930
… …
3135 ev_idle_stop (EV_A_ idle); 4935 ev_idle_stop (EV_A_ idle);
3136} 4936}
3137#endif 4937#endif
3138 4938
3139void 4939void
3140ev_embed_start (EV_P_ ev_embed *w) 4940ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
3141{ 4941{
3142 if (expect_false (ev_is_active (w))) 4942 if (ecb_expect_false (ev_is_active (w)))
3143 return; 4943 return;
3144 4944
3145 { 4945 {
3146 struct ev_loop *loop = w->other; 4946 EV_P = w->other;
3147 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 ()));
3148 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 4948 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3149 } 4949 }
3150 4950
3151 EV_FREQUENT_CHECK; 4951 EV_FREQUENT_CHECK;
… …
3166 4966
3167 EV_FREQUENT_CHECK; 4967 EV_FREQUENT_CHECK;
3168} 4968}
3169 4969
3170void 4970void
3171ev_embed_stop (EV_P_ ev_embed *w) 4971ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
3172{ 4972{
3173 clear_pending (EV_A_ (W)w); 4973 clear_pending (EV_A_ (W)w);
3174 if (expect_false (!ev_is_active (w))) 4974 if (ecb_expect_false (!ev_is_active (w)))
3175 return; 4975 return;
3176 4976
3177 EV_FREQUENT_CHECK; 4977 EV_FREQUENT_CHECK;
3178 4978
3179 ev_io_stop (EV_A_ &w->io); 4979 ev_io_stop (EV_A_ &w->io);
3180 ev_prepare_stop (EV_A_ &w->prepare); 4980 ev_prepare_stop (EV_A_ &w->prepare);
3181 ev_fork_stop (EV_A_ &w->fork); 4981 ev_fork_stop (EV_A_ &w->fork);
3182 4982
4983 ev_stop (EV_A_ (W)w);
4984
3183 EV_FREQUENT_CHECK; 4985 EV_FREQUENT_CHECK;
3184} 4986}
3185#endif 4987#endif
3186 4988
3187#if EV_FORK_ENABLE 4989#if EV_FORK_ENABLE
3188void 4990void
3189ev_fork_start (EV_P_ ev_fork *w) 4991ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
3190{ 4992{
3191 if (expect_false (ev_is_active (w))) 4993 if (ecb_expect_false (ev_is_active (w)))
3192 return; 4994 return;
3193 4995
3194 EV_FREQUENT_CHECK; 4996 EV_FREQUENT_CHECK;
3195 4997
3196 ev_start (EV_A_ (W)w, ++forkcnt); 4998 ev_start (EV_A_ (W)w, ++forkcnt);
3197 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 4999 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
3198 forks [forkcnt - 1] = w; 5000 forks [forkcnt - 1] = w;
3199 5001
3200 EV_FREQUENT_CHECK; 5002 EV_FREQUENT_CHECK;
3201} 5003}
3202 5004
3203void 5005void
3204ev_fork_stop (EV_P_ ev_fork *w) 5006ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
3205{ 5007{
3206 clear_pending (EV_A_ (W)w); 5008 clear_pending (EV_A_ (W)w);
3207 if (expect_false (!ev_is_active (w))) 5009 if (ecb_expect_false (!ev_is_active (w)))
3208 return; 5010 return;
3209 5011
3210 EV_FREQUENT_CHECK; 5012 EV_FREQUENT_CHECK;
3211 5013
3212 { 5014 {
… …
3220 5022
3221 EV_FREQUENT_CHECK; 5023 EV_FREQUENT_CHECK;
3222} 5024}
3223#endif 5025#endif
3224 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
3225#if EV_ASYNC_ENABLE 5068#if EV_ASYNC_ENABLE
3226void 5069void
3227ev_async_start (EV_P_ ev_async *w) 5070ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
3228{ 5071{
3229 if (expect_false (ev_is_active (w))) 5072 if (ecb_expect_false (ev_is_active (w)))
3230 return; 5073 return;
3231 5074
5075 w->sent = 0;
5076
3232 evpipe_init (EV_A); 5077 evpipe_init (EV_A);
3233 5078
3234 EV_FREQUENT_CHECK; 5079 EV_FREQUENT_CHECK;
3235 5080
3236 ev_start (EV_A_ (W)w, ++asynccnt); 5081 ev_start (EV_A_ (W)w, ++asynccnt);
3237 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 5082 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
3238 asyncs [asynccnt - 1] = w; 5083 asyncs [asynccnt - 1] = w;
3239 5084
3240 EV_FREQUENT_CHECK; 5085 EV_FREQUENT_CHECK;
3241} 5086}
3242 5087
3243void 5088void
3244ev_async_stop (EV_P_ ev_async *w) 5089ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
3245{ 5090{
3246 clear_pending (EV_A_ (W)w); 5091 clear_pending (EV_A_ (W)w);
3247 if (expect_false (!ev_is_active (w))) 5092 if (ecb_expect_false (!ev_is_active (w)))
3248 return; 5093 return;
3249 5094
3250 EV_FREQUENT_CHECK; 5095 EV_FREQUENT_CHECK;
3251 5096
3252 { 5097 {
… …
3260 5105
3261 EV_FREQUENT_CHECK; 5106 EV_FREQUENT_CHECK;
3262} 5107}
3263 5108
3264void 5109void
3265ev_async_send (EV_P_ ev_async *w) 5110ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
3266{ 5111{
3267 w->sent = 1; 5112 w->sent = 1;
3268 evpipe_write (EV_A_ &gotasync); 5113 evpipe_write (EV_A_ &async_pending);
3269} 5114}
3270#endif 5115#endif
3271 5116
3272/*****************************************************************************/ 5117/*****************************************************************************/
3273 5118
… …
3307 5152
3308 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));
3309} 5154}
3310 5155
3311void 5156void
3312ev_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
3313{ 5158{
3314 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));
3315
3316 if (expect_false (!once))
3317 {
3318 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
3319 return;
3320 }
3321 5160
3322 once->cb = cb; 5161 once->cb = cb;
3323 once->arg = arg; 5162 once->arg = arg;
3324 5163
3325 ev_init (&once->io, once_cb_io); 5164 ev_init (&once->io, once_cb_io);
… …
3338} 5177}
3339 5178
3340/*****************************************************************************/ 5179/*****************************************************************************/
3341 5180
3342#if EV_WALK_ENABLE 5181#if EV_WALK_ENABLE
5182ecb_cold
3343void 5183void
3344ev_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
3345{ 5185{
3346 int i, j; 5186 int i, j;
3347 ev_watcher_list *wl, *wn; 5187 ev_watcher_list *wl, *wn;
3348 5188
3349 if (types & (EV_IO | EV_EMBED)) 5189 if (types & (EV_IO | EV_EMBED))
… …
3392 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 5232 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3393#endif 5233#endif
3394 5234
3395#if EV_IDLE_ENABLE 5235#if EV_IDLE_ENABLE
3396 if (types & EV_IDLE) 5236 if (types & EV_IDLE)
3397 for (j = NUMPRI; i--; ) 5237 for (j = NUMPRI; j--; )
3398 for (i = idlecnt [j]; i--; ) 5238 for (i = idlecnt [j]; i--; )
3399 cb (EV_A_ EV_IDLE, idles [j][i]); 5239 cb (EV_A_ EV_IDLE, idles [j][i]);
3400#endif 5240#endif
3401 5241
3402#if EV_FORK_ENABLE 5242#if EV_FORK_ENABLE
… …
3410 if (types & EV_ASYNC) 5250 if (types & EV_ASYNC)
3411 for (i = asynccnt; i--; ) 5251 for (i = asynccnt; i--; )
3412 cb (EV_A_ EV_ASYNC, asyncs [i]); 5252 cb (EV_A_ EV_ASYNC, asyncs [i]);
3413#endif 5253#endif
3414 5254
5255#if EV_PREPARE_ENABLE
3415 if (types & EV_PREPARE) 5256 if (types & EV_PREPARE)
3416 for (i = preparecnt; i--; ) 5257 for (i = preparecnt; i--; )
3417#if EV_EMBED_ENABLE 5258# if EV_EMBED_ENABLE
3418 if (ev_cb (prepares [i]) != embed_prepare_cb) 5259 if (ev_cb (prepares [i]) != embed_prepare_cb)
3419#endif 5260# endif
3420 cb (EV_A_ EV_PREPARE, prepares [i]); 5261 cb (EV_A_ EV_PREPARE, prepares [i]);
5262#endif
3421 5263
5264#if EV_CHECK_ENABLE
3422 if (types & EV_CHECK) 5265 if (types & EV_CHECK)
3423 for (i = checkcnt; i--; ) 5266 for (i = checkcnt; i--; )
3424 cb (EV_A_ EV_CHECK, checks [i]); 5267 cb (EV_A_ EV_CHECK, checks [i]);
5268#endif
3425 5269
5270#if EV_SIGNAL_ENABLE
3426 if (types & EV_SIGNAL) 5271 if (types & EV_SIGNAL)
3427 for (i = 0; i < signalmax; ++i) 5272 for (i = 0; i < EV_NSIG - 1; ++i)
3428 for (wl = signals [i].head; wl; ) 5273 for (wl = signals [i].head; wl; )
3429 { 5274 {
3430 wn = wl->next; 5275 wn = wl->next;
3431 cb (EV_A_ EV_SIGNAL, wl); 5276 cb (EV_A_ EV_SIGNAL, wl);
3432 wl = wn; 5277 wl = wn;
3433 } 5278 }
5279#endif
3434 5280
5281#if EV_CHILD_ENABLE
3435 if (types & EV_CHILD) 5282 if (types & EV_CHILD)
3436 for (i = EV_PID_HASHSIZE; i--; ) 5283 for (i = (EV_PID_HASHSIZE); i--; )
3437 for (wl = childs [i]; wl; ) 5284 for (wl = childs [i]; wl; )
3438 { 5285 {
3439 wn = wl->next; 5286 wn = wl->next;
3440 cb (EV_A_ EV_CHILD, wl); 5287 cb (EV_A_ EV_CHILD, wl);
3441 wl = wn; 5288 wl = wn;
3442 } 5289 }
5290#endif
3443/* EV_STAT 0x00001000 /* stat data changed */ 5291/* EV_STAT 0x00001000 /* stat data changed */
3444/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 5292/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3445} 5293}
3446#endif 5294#endif
3447 5295
3448#if EV_MULTIPLICITY 5296#if EV_MULTIPLICITY
3449 #include "ev_wrap.h" 5297 #include "ev_wrap.h"
3450#endif 5298#endif
3451 5299
3452#ifdef __cplusplus
3453}
3454#endif
3455

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