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

Comparing libev/ev.c (file contents):
Revision 1.295 by root, Wed Jul 8 04:29:31 2009 UTC vs.
Revision 1.510 by root, Wed Aug 28 09:45:49 2019 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007-2019 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
10 * 1. Redistributions of source code must retain the above copyright notice, 10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer. 11 * this list of conditions and the following disclaimer.
12 * 12 *
13 * 2. Redistributions in binary form must reproduce the above copyright 13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the 14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution. 15 * documentation and/or other materials provided with the distribution.
16 * 16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- 18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO 19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- 20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
… …
35 * and other provisions required by the GPL. If you do not delete the 35 * and other provisions required by the GPL. If you do not delete the
36 * provisions above, a recipient may use your version of this file under 36 * provisions above, a recipient may use your version of this file under
37 * either the BSD or the GPL. 37 * either the BSD or the GPL.
38 */ 38 */
39 39
40#ifdef __cplusplus
41extern "C" {
42#endif
43
44/* this big block deduces configuration from config.h */ 40/* this big block deduces configuration from config.h */
45#ifndef EV_STANDALONE 41#ifndef EV_STANDALONE
46# ifdef EV_CONFIG_H 42# ifdef EV_CONFIG_H
47# include EV_CONFIG_H 43# include EV_CONFIG_H
48# else 44# else
49# include "config.h" 45# include "config.h"
46# endif
47
48# if HAVE_FLOOR
49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1
51# endif
50# endif 52# endif
51 53
52# if HAVE_CLOCK_SYSCALL 54# if HAVE_CLOCK_SYSCALL
53# ifndef EV_USE_CLOCK_SYSCALL 55# ifndef EV_USE_CLOCK_SYSCALL
54# define EV_USE_CLOCK_SYSCALL 1 56# define EV_USE_CLOCK_SYSCALL 1
… …
57# endif 59# endif
58# ifndef EV_USE_MONOTONIC 60# ifndef EV_USE_MONOTONIC
59# define EV_USE_MONOTONIC 1 61# define EV_USE_MONOTONIC 1
60# endif 62# endif
61# endif 63# endif
62# elif !defined(EV_USE_CLOCK_SYSCALL) 64# elif !defined EV_USE_CLOCK_SYSCALL
63# define EV_USE_CLOCK_SYSCALL 0 65# define EV_USE_CLOCK_SYSCALL 0
64# endif 66# endif
65 67
66# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
67# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
… …
77# ifndef EV_USE_REALTIME 79# ifndef EV_USE_REALTIME
78# define EV_USE_REALTIME 0 80# define EV_USE_REALTIME 0
79# endif 81# endif
80# endif 82# endif
81 83
84# if HAVE_NANOSLEEP
82# ifndef EV_USE_NANOSLEEP 85# ifndef EV_USE_NANOSLEEP
83# if HAVE_NANOSLEEP
84# define EV_USE_NANOSLEEP 1 86# define EV_USE_NANOSLEEP EV_FEATURE_OS
87# endif
85# else 88# else
89# undef EV_USE_NANOSLEEP
86# define EV_USE_NANOSLEEP 0 90# define EV_USE_NANOSLEEP 0
91# endif
92
93# if HAVE_SELECT && HAVE_SYS_SELECT_H
94# ifndef EV_USE_SELECT
95# define EV_USE_SELECT EV_FEATURE_BACKENDS
87# endif 96# endif
97# else
98# undef EV_USE_SELECT
99# define EV_USE_SELECT 0
88# endif 100# endif
89 101
102# if HAVE_POLL && HAVE_POLL_H
90# ifndef EV_USE_SELECT 103# ifndef EV_USE_POLL
91# if HAVE_SELECT && HAVE_SYS_SELECT_H 104# define EV_USE_POLL EV_FEATURE_BACKENDS
92# define EV_USE_SELECT 1
93# else
94# define EV_USE_SELECT 0
95# endif 105# endif
96# endif
97
98# ifndef EV_USE_POLL
99# if HAVE_POLL && HAVE_POLL_H
100# define EV_USE_POLL 1
101# else 106# else
107# undef EV_USE_POLL
102# define EV_USE_POLL 0 108# define EV_USE_POLL 0
103# endif
104# endif 109# endif
105 110
106# ifndef EV_USE_EPOLL
107# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 111# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
108# define EV_USE_EPOLL 1 112# ifndef EV_USE_EPOLL
109# else 113# define EV_USE_EPOLL EV_FEATURE_BACKENDS
110# define EV_USE_EPOLL 0
111# endif 114# endif
115# else
116# undef EV_USE_EPOLL
117# define EV_USE_EPOLL 0
112# endif 118# endif
113 119
114# ifndef EV_USE_KQUEUE 120# if HAVE_LINUX_AIO_ABI_H
115# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 121# ifndef EV_USE_LINUXAIO
116# define EV_USE_KQUEUE 1 122# define EV_USE_LINUXAIO EV_FEATURE_BACKENDS
117# else
118# define EV_USE_KQUEUE 0
119# endif 123# endif
124# else
125# undef EV_USE_LINUXAIO
126# define EV_USE_LINUXAIO 0
120# endif 127# endif
121 128
122# ifndef EV_USE_PORT 129# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
123# if HAVE_PORT_H && HAVE_PORT_CREATE 130# ifndef EV_USE_KQUEUE
124# define EV_USE_PORT 1 131# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
125# else
126# define EV_USE_PORT 0
127# endif 132# endif
133# else
134# undef EV_USE_KQUEUE
135# define EV_USE_KQUEUE 0
128# endif 136# endif
129 137
138# if HAVE_PORT_H && HAVE_PORT_CREATE
130# ifndef EV_USE_INOTIFY 139# ifndef EV_USE_PORT
131# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 140# define EV_USE_PORT EV_FEATURE_BACKENDS
132# define EV_USE_INOTIFY 1
133# else
134# define EV_USE_INOTIFY 0
135# endif 141# endif
142# else
143# undef EV_USE_PORT
144# define EV_USE_PORT 0
136# endif 145# endif
137 146
147# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
138# ifndef EV_USE_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 /* linuxaio backend requires epoll backend */
453# define EV_NEED_SYSCALL 1
454# else
455# undef EV_USE_LINUXAIO
456# define EV_USE_LINUXAIO 0
457# endif
458#endif
459
460#if EV_USE_IOURING
461# include <sys/syscall.h>
462# if !SYS_io_uring_setup && __linux && !__alpha
463# define SYS_io_uring_setup 425
464# define SYS_io_uring_enter 426
465# define SYS_io_uring_wregister 427
466# endif
467# if SYS_io_uring_setup && EV_USE_EPOLL /* iouring backend requires epoll backend */
468# define EV_NEED_SYSCALL 1
469# else
470# undef EV_USE_IOURING
471# define EV_USE_IOURING 0
472# endif
473#endif
474
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/*****************************************************************************/
354 524
355#if EV_VERIFY >= 3 525#if EV_VERIFY >= 3
356# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 526# define EV_FREQUENT_CHECK ev_verify (EV_A)
357#else 527#else
358# define EV_FREQUENT_CHECK do { } while (0) 528# define EV_FREQUENT_CHECK do { } while (0)
359#endif 529#endif
360 530
361/* 531/*
362 * This is used to avoid floating point rounding problems. 532 * 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. 533 * This value is good at least till the year 4000.
367 * Better solutions welcome.
368 */ 534 */
369#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 535#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
536/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
370 537
371#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 538#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
372#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 539#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
373/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
374 540
541/* find a portable timestamp that is "always" in the future but fits into time_t.
542 * this is quite hard, and we are mostly guessing - we handle 32 bit signed/unsigned time_t,
543 * and sizes larger than 32 bit, and maybe the unlikely floating point time_t */
544#define EV_TSTAMP_HUGE \
545 (sizeof (time_t) >= 8 ? 10000000000000. \
546 : 0 < (time_t)4294967295 ? 4294967295. \
547 : 2147483647.) \
548
549#ifndef EV_TS_CONST
550# define EV_TS_CONST(nv) nv
551# define EV_TS_TO_MSEC(a) a * 1e3 + 0.9999
552# define EV_TS_FROM_USEC(us) us * 1e-6
553# define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
554# define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
555# define EV_TV_GET(tv) ((tv).tv_sec + (tv).tv_usec * 1e-6)
556# define EV_TS_GET(ts) ((ts).tv_sec + (ts).tv_nsec * 1e-9)
557#endif
558
559/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
560/* ECB.H BEGIN */
561/*
562 * libecb - http://software.schmorp.de/pkg/libecb
563 *
564 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
565 * Copyright (©) 2011 Emanuele Giaquinta
566 * All rights reserved.
567 *
568 * Redistribution and use in source and binary forms, with or without modifica-
569 * tion, are permitted provided that the following conditions are met:
570 *
571 * 1. Redistributions of source code must retain the above copyright notice,
572 * this list of conditions and the following disclaimer.
573 *
574 * 2. Redistributions in binary form must reproduce the above copyright
575 * notice, this list of conditions and the following disclaimer in the
576 * documentation and/or other materials provided with the distribution.
577 *
578 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
579 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
580 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
581 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
582 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
583 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
584 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
585 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
586 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
587 * OF THE POSSIBILITY OF SUCH DAMAGE.
588 *
589 * Alternatively, the contents of this file may be used under the terms of
590 * the GNU General Public License ("GPL") version 2 or any later version,
591 * in which case the provisions of the GPL are applicable instead of
592 * the above. If you wish to allow the use of your version of this file
593 * only under the terms of the GPL and not to allow others to use your
594 * version of this file under the BSD license, indicate your decision
595 * by deleting the provisions above and replace them with the notice
596 * and other provisions required by the GPL. If you do not delete the
597 * provisions above, a recipient may use your version of this file under
598 * either the BSD or the GPL.
599 */
600
601#ifndef ECB_H
602#define ECB_H
603
604/* 16 bits major, 16 bits minor */
605#define ECB_VERSION 0x00010006
606
607#ifdef _WIN32
608 typedef signed char int8_t;
609 typedef unsigned char uint8_t;
610 typedef signed short int16_t;
611 typedef unsigned short uint16_t;
612 typedef signed int int32_t;
613 typedef unsigned int uint32_t;
375#if __GNUC__ >= 4 614 #if __GNUC__
376# define expect(expr,value) __builtin_expect ((expr),(value)) 615 typedef signed long long int64_t;
377# define noinline __attribute__ ((noinline)) 616 typedef unsigned long long uint64_t;
617 #else /* _MSC_VER || __BORLANDC__ */
618 typedef signed __int64 int64_t;
619 typedef unsigned __int64 uint64_t;
620 #endif
621 #ifdef _WIN64
622 #define ECB_PTRSIZE 8
623 typedef uint64_t uintptr_t;
624 typedef int64_t intptr_t;
625 #else
626 #define ECB_PTRSIZE 4
627 typedef uint32_t uintptr_t;
628 typedef int32_t intptr_t;
629 #endif
378#else 630#else
379# define expect(expr,value) (expr) 631 #include <inttypes.h>
380# define noinline 632 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
381# if __STDC_VERSION__ < 199901L && __GNUC__ < 2 633 #define ECB_PTRSIZE 8
382# define inline 634 #else
635 #define ECB_PTRSIZE 4
636 #endif
383# endif 637#endif
638
639#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
640#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
641
642/* work around x32 idiocy by defining proper macros */
643#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
644 #if _ILP32
645 #define ECB_AMD64_X32 1
646 #else
647 #define ECB_AMD64 1
384#endif 648 #endif
649#endif
385 650
386#define expect_false(expr) expect ((expr) != 0, 0) 651/* many compilers define _GNUC_ to some versions but then only implement
387#define expect_true(expr) expect ((expr) != 0, 1) 652 * what their idiot authors think are the "more important" extensions,
388#define inline_size static inline 653 * causing enormous grief in return for some better fake benchmark numbers.
389 654 * or so.
390#if EV_MINIMAL 655 * we try to detect these and simply assume they are not gcc - if they have
391# define inline_speed static noinline 656 * an issue with that they should have done it right in the first place.
657 */
658#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
659 #define ECB_GCC_VERSION(major,minor) 0
392#else 660#else
661 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
662#endif
663
664#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
665
666#if __clang__ && defined __has_builtin
667 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
668#else
669 #define ECB_CLANG_BUILTIN(x) 0
670#endif
671
672#if __clang__ && defined __has_extension
673 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
674#else
675 #define ECB_CLANG_EXTENSION(x) 0
676#endif
677
678#define ECB_CPP (__cplusplus+0)
679#define ECB_CPP11 (__cplusplus >= 201103L)
680#define ECB_CPP14 (__cplusplus >= 201402L)
681#define ECB_CPP17 (__cplusplus >= 201703L)
682
683#if ECB_CPP
684 #define ECB_C 0
685 #define ECB_STDC_VERSION 0
686#else
687 #define ECB_C 1
688 #define ECB_STDC_VERSION __STDC_VERSION__
689#endif
690
691#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
692#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
693#define ECB_C17 (ECB_STDC_VERSION >= 201710L)
694
695#if ECB_CPP
696 #define ECB_EXTERN_C extern "C"
697 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
698 #define ECB_EXTERN_C_END }
699#else
700 #define ECB_EXTERN_C extern
701 #define ECB_EXTERN_C_BEG
702 #define ECB_EXTERN_C_END
703#endif
704
705/*****************************************************************************/
706
707/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
708/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
709
710#if ECB_NO_THREADS
711 #define ECB_NO_SMP 1
712#endif
713
714#if ECB_NO_SMP
715 #define ECB_MEMORY_FENCE do { } while (0)
716#endif
717
718/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
719#if __xlC__ && ECB_CPP
720 #include <builtins.h>
721#endif
722
723#if 1400 <= _MSC_VER
724 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
725#endif
726
727#ifndef ECB_MEMORY_FENCE
728 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
729 #define ECB_MEMORY_FENCE_RELAXED __asm__ __volatile__ ("" : : : "memory")
730 #if __i386 || __i386__
731 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
732 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
733 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
734 #elif ECB_GCC_AMD64
735 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
736 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
737 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
738 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
739 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
740 #elif defined __ARM_ARCH_2__ \
741 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
742 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
743 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
744 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
745 || defined __ARM_ARCH_5TEJ__
746 /* should not need any, unless running old code on newer cpu - arm doesn't support that */
747 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
748 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
749 || defined __ARM_ARCH_6T2__
750 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
751 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
752 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
753 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
754 #elif __aarch64__
755 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
756 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
757 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
758 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
759 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
760 #elif defined __s390__ || defined __s390x__
761 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
762 #elif defined __mips__
763 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
764 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
765 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
766 #elif defined __alpha__
767 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
768 #elif defined __hppa__
769 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
770 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
771 #elif defined __ia64__
772 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
773 #elif defined __m68k__
774 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
775 #elif defined __m88k__
776 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
777 #elif defined __sh__
778 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
779 #endif
780 #endif
781#endif
782
783#ifndef ECB_MEMORY_FENCE
784 #if ECB_GCC_VERSION(4,7)
785 /* see comment below (stdatomic.h) about the C11 memory model. */
786 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
787 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
788 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
789 #define ECB_MEMORY_FENCE_RELAXED __atomic_thread_fence (__ATOMIC_RELAXED)
790
791 #elif ECB_CLANG_EXTENSION(c_atomic)
792 /* see comment below (stdatomic.h) about the C11 memory model. */
793 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
794 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
795 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
796 #define ECB_MEMORY_FENCE_RELAXED __c11_atomic_thread_fence (__ATOMIC_RELAXED)
797
798 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
799 #define ECB_MEMORY_FENCE __sync_synchronize ()
800 #elif _MSC_VER >= 1500 /* VC++ 2008 */
801 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
802 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
803 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
804 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
805 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
806 #elif _MSC_VER >= 1400 /* VC++ 2005 */
807 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
808 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
809 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
810 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
811 #elif defined _WIN32
812 #include <WinNT.h>
813 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
814 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
815 #include <mbarrier.h>
816 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
817 #define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier ()
818 #define ECB_MEMORY_FENCE_RELEASE __machine_rel_barrier ()
819 #define ECB_MEMORY_FENCE_RELAXED __compiler_barrier ()
820 #elif __xlC__
821 #define ECB_MEMORY_FENCE __sync ()
822 #endif
823#endif
824
825#ifndef ECB_MEMORY_FENCE
826 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
827 /* we assume that these memory fences work on all variables/all memory accesses, */
828 /* not just C11 atomics and atomic accesses */
829 #include <stdatomic.h>
830 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
831 #define ECB_MEMORY_FENCE_ACQUIRE atomic_thread_fence (memory_order_acquire)
832 #define ECB_MEMORY_FENCE_RELEASE atomic_thread_fence (memory_order_release)
833 #endif
834#endif
835
836#ifndef ECB_MEMORY_FENCE
837 #if !ECB_AVOID_PTHREADS
838 /*
839 * if you get undefined symbol references to pthread_mutex_lock,
840 * or failure to find pthread.h, then you should implement
841 * the ECB_MEMORY_FENCE operations for your cpu/compiler
842 * OR provide pthread.h and link against the posix thread library
843 * of your system.
844 */
845 #include <pthread.h>
846 #define ECB_NEEDS_PTHREADS 1
847 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
848
849 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
850 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
851 #endif
852#endif
853
854#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
855 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
856#endif
857
858#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
859 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
860#endif
861
862#if !defined ECB_MEMORY_FENCE_RELAXED && defined ECB_MEMORY_FENCE
863 #define ECB_MEMORY_FENCE_RELAXED ECB_MEMORY_FENCE /* very heavy-handed */
864#endif
865
866/*****************************************************************************/
867
868#if ECB_CPP
869 #define ecb_inline static inline
870#elif ECB_GCC_VERSION(2,5)
871 #define ecb_inline static __inline__
872#elif ECB_C99
873 #define ecb_inline static inline
874#else
875 #define ecb_inline static
876#endif
877
878#if ECB_GCC_VERSION(3,3)
879 #define ecb_restrict __restrict__
880#elif ECB_C99
881 #define ecb_restrict restrict
882#else
883 #define ecb_restrict
884#endif
885
886typedef int ecb_bool;
887
888#define ECB_CONCAT_(a, b) a ## b
889#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
890#define ECB_STRINGIFY_(a) # a
891#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
892#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
893
894#define ecb_function_ ecb_inline
895
896#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
897 #define ecb_attribute(attrlist) __attribute__ (attrlist)
898#else
899 #define ecb_attribute(attrlist)
900#endif
901
902#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
903 #define ecb_is_constant(expr) __builtin_constant_p (expr)
904#else
905 /* possible C11 impl for integral types
906 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
907 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
908
909 #define ecb_is_constant(expr) 0
910#endif
911
912#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
913 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
914#else
915 #define ecb_expect(expr,value) (expr)
916#endif
917
918#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
919 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
920#else
921 #define ecb_prefetch(addr,rw,locality)
922#endif
923
924/* no emulation for ecb_decltype */
925#if ECB_CPP11
926 // older implementations might have problems with decltype(x)::type, work around it
927 template<class T> struct ecb_decltype_t { typedef T type; };
928 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
929#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
930 #define ecb_decltype(x) __typeof__ (x)
931#endif
932
933#if _MSC_VER >= 1300
934 #define ecb_deprecated __declspec (deprecated)
935#else
936 #define ecb_deprecated ecb_attribute ((__deprecated__))
937#endif
938
939#if _MSC_VER >= 1500
940 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
941#elif ECB_GCC_VERSION(4,5)
942 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
943#else
944 #define ecb_deprecated_message(msg) ecb_deprecated
945#endif
946
947#if _MSC_VER >= 1400
948 #define ecb_noinline __declspec (noinline)
949#else
950 #define ecb_noinline ecb_attribute ((__noinline__))
951#endif
952
953#define ecb_unused ecb_attribute ((__unused__))
954#define ecb_const ecb_attribute ((__const__))
955#define ecb_pure ecb_attribute ((__pure__))
956
957#if ECB_C11 || __IBMC_NORETURN
958 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
959 #define ecb_noreturn _Noreturn
960#elif ECB_CPP11
961 #define ecb_noreturn [[noreturn]]
962#elif _MSC_VER >= 1200
963 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
964 #define ecb_noreturn __declspec (noreturn)
965#else
966 #define ecb_noreturn ecb_attribute ((__noreturn__))
967#endif
968
969#if ECB_GCC_VERSION(4,3)
970 #define ecb_artificial ecb_attribute ((__artificial__))
971 #define ecb_hot ecb_attribute ((__hot__))
972 #define ecb_cold ecb_attribute ((__cold__))
973#else
974 #define ecb_artificial
975 #define ecb_hot
976 #define ecb_cold
977#endif
978
979/* put around conditional expressions if you are very sure that the */
980/* expression is mostly true or mostly false. note that these return */
981/* booleans, not the expression. */
982#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
983#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
984/* for compatibility to the rest of the world */
985#define ecb_likely(expr) ecb_expect_true (expr)
986#define ecb_unlikely(expr) ecb_expect_false (expr)
987
988/* count trailing zero bits and count # of one bits */
989#if ECB_GCC_VERSION(3,4) \
990 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
991 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
992 && ECB_CLANG_BUILTIN(__builtin_popcount))
993 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
994 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
995 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
996 #define ecb_ctz32(x) __builtin_ctz (x)
997 #define ecb_ctz64(x) __builtin_ctzll (x)
998 #define ecb_popcount32(x) __builtin_popcount (x)
999 /* no popcountll */
1000#else
1001 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
1002 ecb_function_ ecb_const int
1003 ecb_ctz32 (uint32_t x)
1004 {
1005#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1006 unsigned long r;
1007 _BitScanForward (&r, x);
1008 return (int)r;
1009#else
1010 int r = 0;
1011
1012 x &= ~x + 1; /* this isolates the lowest bit */
1013
1014#if ECB_branchless_on_i386
1015 r += !!(x & 0xaaaaaaaa) << 0;
1016 r += !!(x & 0xcccccccc) << 1;
1017 r += !!(x & 0xf0f0f0f0) << 2;
1018 r += !!(x & 0xff00ff00) << 3;
1019 r += !!(x & 0xffff0000) << 4;
1020#else
1021 if (x & 0xaaaaaaaa) r += 1;
1022 if (x & 0xcccccccc) r += 2;
1023 if (x & 0xf0f0f0f0) r += 4;
1024 if (x & 0xff00ff00) r += 8;
1025 if (x & 0xffff0000) r += 16;
1026#endif
1027
1028 return r;
1029#endif
1030 }
1031
1032 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
1033 ecb_function_ ecb_const int
1034 ecb_ctz64 (uint64_t x)
1035 {
1036#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1037 unsigned long r;
1038 _BitScanForward64 (&r, x);
1039 return (int)r;
1040#else
1041 int shift = x & 0xffffffff ? 0 : 32;
1042 return ecb_ctz32 (x >> shift) + shift;
1043#endif
1044 }
1045
1046 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
1047 ecb_function_ ecb_const int
1048 ecb_popcount32 (uint32_t x)
1049 {
1050 x -= (x >> 1) & 0x55555555;
1051 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
1052 x = ((x >> 4) + x) & 0x0f0f0f0f;
1053 x *= 0x01010101;
1054
1055 return x >> 24;
1056 }
1057
1058 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
1059 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
1060 {
1061#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1062 unsigned long r;
1063 _BitScanReverse (&r, x);
1064 return (int)r;
1065#else
1066 int r = 0;
1067
1068 if (x >> 16) { x >>= 16; r += 16; }
1069 if (x >> 8) { x >>= 8; r += 8; }
1070 if (x >> 4) { x >>= 4; r += 4; }
1071 if (x >> 2) { x >>= 2; r += 2; }
1072 if (x >> 1) { r += 1; }
1073
1074 return r;
1075#endif
1076 }
1077
1078 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
1079 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
1080 {
1081#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1082 unsigned long r;
1083 _BitScanReverse64 (&r, x);
1084 return (int)r;
1085#else
1086 int r = 0;
1087
1088 if (x >> 32) { x >>= 32; r += 32; }
1089
1090 return r + ecb_ld32 (x);
1091#endif
1092 }
1093#endif
1094
1095ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
1096ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
1097ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
1098ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
1099
1100ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
1101ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
1102{
1103 return ( (x * 0x0802U & 0x22110U)
1104 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
1105}
1106
1107ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
1108ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
1109{
1110 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
1111 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
1112 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
1113 x = ( x >> 8 ) | ( x << 8);
1114
1115 return x;
1116}
1117
1118ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
1119ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
1120{
1121 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
1122 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
1123 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
1124 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
1125 x = ( x >> 16 ) | ( x << 16);
1126
1127 return x;
1128}
1129
1130/* popcount64 is only available on 64 bit cpus as gcc builtin */
1131/* so for this version we are lazy */
1132ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
1133ecb_function_ ecb_const int
1134ecb_popcount64 (uint64_t x)
1135{
1136 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
1137}
1138
1139ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
1140ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
1141ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
1142ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
1143ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
1144ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
1145ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
1146ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
1147
1148ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
1149ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
1150ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
1151ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
1152ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
1153ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
1154ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
1155ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
1156
1157#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1158 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1159 #define ecb_bswap16(x) __builtin_bswap16 (x)
1160 #else
1161 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1162 #endif
1163 #define ecb_bswap32(x) __builtin_bswap32 (x)
1164 #define ecb_bswap64(x) __builtin_bswap64 (x)
1165#elif _MSC_VER
1166 #include <stdlib.h>
1167 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1168 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1169 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
1170#else
1171 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
1172 ecb_function_ ecb_const uint16_t
1173 ecb_bswap16 (uint16_t x)
1174 {
1175 return ecb_rotl16 (x, 8);
1176 }
1177
1178 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
1179 ecb_function_ ecb_const uint32_t
1180 ecb_bswap32 (uint32_t x)
1181 {
1182 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
1183 }
1184
1185 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
1186 ecb_function_ ecb_const uint64_t
1187 ecb_bswap64 (uint64_t x)
1188 {
1189 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
1190 }
1191#endif
1192
1193#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
1194 #define ecb_unreachable() __builtin_unreachable ()
1195#else
1196 /* this seems to work fine, but gcc always emits a warning for it :/ */
1197 ecb_inline ecb_noreturn void ecb_unreachable (void);
1198 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
1199#endif
1200
1201/* try to tell the compiler that some condition is definitely true */
1202#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
1203
1204ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
1205ecb_inline ecb_const uint32_t
1206ecb_byteorder_helper (void)
1207{
1208 /* the union code still generates code under pressure in gcc, */
1209 /* but less than using pointers, and always seems to */
1210 /* successfully return a constant. */
1211 /* the reason why we have this horrible preprocessor mess */
1212 /* is to avoid it in all cases, at least on common architectures */
1213 /* or when using a recent enough gcc version (>= 4.6) */
1214#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1215 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1216 #define ECB_LITTLE_ENDIAN 1
1217 return 0x44332211;
1218#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1219 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1220 #define ECB_BIG_ENDIAN 1
1221 return 0x11223344;
1222#else
1223 union
1224 {
1225 uint8_t c[4];
1226 uint32_t u;
1227 } u = { 0x11, 0x22, 0x33, 0x44 };
1228 return u.u;
1229#endif
1230}
1231
1232ecb_inline ecb_const ecb_bool ecb_big_endian (void);
1233ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
1234ecb_inline ecb_const ecb_bool ecb_little_endian (void);
1235ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
1236
1237#if ECB_GCC_VERSION(3,0) || ECB_C99
1238 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1239#else
1240 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1241#endif
1242
1243#if ECB_CPP
1244 template<typename T>
1245 static inline T ecb_div_rd (T val, T div)
1246 {
1247 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1248 }
1249 template<typename T>
1250 static inline T ecb_div_ru (T val, T div)
1251 {
1252 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1253 }
1254#else
1255 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1256 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1257#endif
1258
1259#if ecb_cplusplus_does_not_suck
1260 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1261 template<typename T, int N>
1262 static inline int ecb_array_length (const T (&arr)[N])
1263 {
1264 return N;
1265 }
1266#else
1267 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1268#endif
1269
1270ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1271ecb_function_ ecb_const uint32_t
1272ecb_binary16_to_binary32 (uint32_t x)
1273{
1274 unsigned int s = (x & 0x8000) << (31 - 15);
1275 int e = (x >> 10) & 0x001f;
1276 unsigned int m = x & 0x03ff;
1277
1278 if (ecb_expect_false (e == 31))
1279 /* infinity or NaN */
1280 e = 255 - (127 - 15);
1281 else if (ecb_expect_false (!e))
1282 {
1283 if (ecb_expect_true (!m))
1284 /* zero, handled by code below by forcing e to 0 */
1285 e = 0 - (127 - 15);
1286 else
1287 {
1288 /* subnormal, renormalise */
1289 unsigned int s = 10 - ecb_ld32 (m);
1290
1291 m = (m << s) & 0x3ff; /* mask implicit bit */
1292 e -= s - 1;
1293 }
1294 }
1295
1296 /* e and m now are normalised, or zero, (or inf or nan) */
1297 e += 127 - 15;
1298
1299 return s | (e << 23) | (m << (23 - 10));
1300}
1301
1302ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1303ecb_function_ ecb_const uint16_t
1304ecb_binary32_to_binary16 (uint32_t x)
1305{
1306 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1307 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1308 unsigned int m = x & 0x007fffff;
1309
1310 x &= 0x7fffffff;
1311
1312 /* if it's within range of binary16 normals, use fast path */
1313 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1314 {
1315 /* mantissa round-to-even */
1316 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1317
1318 /* handle overflow */
1319 if (ecb_expect_false (m >= 0x00800000))
1320 {
1321 m >>= 1;
1322 e += 1;
1323 }
1324
1325 return s | (e << 10) | (m >> (23 - 10));
1326 }
1327
1328 /* handle large numbers and infinity */
1329 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1330 return s | 0x7c00;
1331
1332 /* handle zero, subnormals and small numbers */
1333 if (ecb_expect_true (x < 0x38800000))
1334 {
1335 /* zero */
1336 if (ecb_expect_true (!x))
1337 return s;
1338
1339 /* handle subnormals */
1340
1341 /* too small, will be zero */
1342 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1343 return s;
1344
1345 m |= 0x00800000; /* make implicit bit explicit */
1346
1347 /* very tricky - we need to round to the nearest e (+10) bit value */
1348 {
1349 unsigned int bits = 14 - e;
1350 unsigned int half = (1 << (bits - 1)) - 1;
1351 unsigned int even = (m >> bits) & 1;
1352
1353 /* if this overflows, we will end up with a normalised number */
1354 m = (m + half + even) >> bits;
1355 }
1356
1357 return s | m;
1358 }
1359
1360 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1361 m >>= 13;
1362
1363 return s | 0x7c00 | m | !m;
1364}
1365
1366/*******************************************************************************/
1367/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1368
1369/* basically, everything uses "ieee pure-endian" floating point numbers */
1370/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1371#if 0 \
1372 || __i386 || __i386__ \
1373 || ECB_GCC_AMD64 \
1374 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1375 || defined __s390__ || defined __s390x__ \
1376 || defined __mips__ \
1377 || defined __alpha__ \
1378 || defined __hppa__ \
1379 || defined __ia64__ \
1380 || defined __m68k__ \
1381 || defined __m88k__ \
1382 || defined __sh__ \
1383 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1384 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1385 || defined __aarch64__
1386 #define ECB_STDFP 1
1387 #include <string.h> /* for memcpy */
1388#else
1389 #define ECB_STDFP 0
1390#endif
1391
1392#ifndef ECB_NO_LIBM
1393
1394 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1395
1396 /* only the oldest of old doesn't have this one. solaris. */
1397 #ifdef INFINITY
1398 #define ECB_INFINITY INFINITY
1399 #else
1400 #define ECB_INFINITY HUGE_VAL
1401 #endif
1402
1403 #ifdef NAN
1404 #define ECB_NAN NAN
1405 #else
1406 #define ECB_NAN ECB_INFINITY
1407 #endif
1408
1409 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1410 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1411 #define ecb_frexpf(x,e) frexpf ((x), (e))
1412 #else
1413 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1414 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1415 #endif
1416
1417 /* convert a float to ieee single/binary32 */
1418 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1419 ecb_function_ ecb_const uint32_t
1420 ecb_float_to_binary32 (float x)
1421 {
1422 uint32_t r;
1423
1424 #if ECB_STDFP
1425 memcpy (&r, &x, 4);
1426 #else
1427 /* slow emulation, works for anything but -0 */
1428 uint32_t m;
1429 int e;
1430
1431 if (x == 0e0f ) return 0x00000000U;
1432 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1433 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1434 if (x != x ) return 0x7fbfffffU;
1435
1436 m = ecb_frexpf (x, &e) * 0x1000000U;
1437
1438 r = m & 0x80000000U;
1439
1440 if (r)
1441 m = -m;
1442
1443 if (e <= -126)
1444 {
1445 m &= 0xffffffU;
1446 m >>= (-125 - e);
1447 e = -126;
1448 }
1449
1450 r |= (e + 126) << 23;
1451 r |= m & 0x7fffffU;
1452 #endif
1453
1454 return r;
1455 }
1456
1457 /* converts an ieee single/binary32 to a float */
1458 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1459 ecb_function_ ecb_const float
1460 ecb_binary32_to_float (uint32_t x)
1461 {
1462 float r;
1463
1464 #if ECB_STDFP
1465 memcpy (&r, &x, 4);
1466 #else
1467 /* emulation, only works for normals and subnormals and +0 */
1468 int neg = x >> 31;
1469 int e = (x >> 23) & 0xffU;
1470
1471 x &= 0x7fffffU;
1472
1473 if (e)
1474 x |= 0x800000U;
1475 else
1476 e = 1;
1477
1478 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1479 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1480
1481 r = neg ? -r : r;
1482 #endif
1483
1484 return r;
1485 }
1486
1487 /* convert a double to ieee double/binary64 */
1488 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1489 ecb_function_ ecb_const uint64_t
1490 ecb_double_to_binary64 (double x)
1491 {
1492 uint64_t r;
1493
1494 #if ECB_STDFP
1495 memcpy (&r, &x, 8);
1496 #else
1497 /* slow emulation, works for anything but -0 */
1498 uint64_t m;
1499 int e;
1500
1501 if (x == 0e0 ) return 0x0000000000000000U;
1502 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1503 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1504 if (x != x ) return 0X7ff7ffffffffffffU;
1505
1506 m = frexp (x, &e) * 0x20000000000000U;
1507
1508 r = m & 0x8000000000000000;;
1509
1510 if (r)
1511 m = -m;
1512
1513 if (e <= -1022)
1514 {
1515 m &= 0x1fffffffffffffU;
1516 m >>= (-1021 - e);
1517 e = -1022;
1518 }
1519
1520 r |= ((uint64_t)(e + 1022)) << 52;
1521 r |= m & 0xfffffffffffffU;
1522 #endif
1523
1524 return r;
1525 }
1526
1527 /* converts an ieee double/binary64 to a double */
1528 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1529 ecb_function_ ecb_const double
1530 ecb_binary64_to_double (uint64_t x)
1531 {
1532 double r;
1533
1534 #if ECB_STDFP
1535 memcpy (&r, &x, 8);
1536 #else
1537 /* emulation, only works for normals and subnormals and +0 */
1538 int neg = x >> 63;
1539 int e = (x >> 52) & 0x7ffU;
1540
1541 x &= 0xfffffffffffffU;
1542
1543 if (e)
1544 x |= 0x10000000000000U;
1545 else
1546 e = 1;
1547
1548 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1549 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1550
1551 r = neg ? -r : r;
1552 #endif
1553
1554 return r;
1555 }
1556
1557 /* convert a float to ieee half/binary16 */
1558 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1559 ecb_function_ ecb_const uint16_t
1560 ecb_float_to_binary16 (float x)
1561 {
1562 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1563 }
1564
1565 /* convert an ieee half/binary16 to float */
1566 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1567 ecb_function_ ecb_const float
1568 ecb_binary16_to_float (uint16_t x)
1569 {
1570 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1571 }
1572
1573#endif
1574
1575#endif
1576
1577/* ECB.H END */
1578
1579#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1580/* if your architecture doesn't need memory fences, e.g. because it is
1581 * single-cpu/core, or if you use libev in a project that doesn't use libev
1582 * from multiple threads, then you can define ECB_NO_THREADS when compiling
1583 * libev, in which cases the memory fences become nops.
1584 * alternatively, you can remove this #error and link against libpthread,
1585 * which will then provide the memory fences.
1586 */
1587# error "memory fences not defined for your architecture, please report"
1588#endif
1589
1590#ifndef ECB_MEMORY_FENCE
1591# define ECB_MEMORY_FENCE do { } while (0)
1592# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1593# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1594#endif
1595
1596#define inline_size ecb_inline
1597
1598#if EV_FEATURE_CODE
393# define inline_speed static inline 1599# define inline_speed ecb_inline
1600#else
1601# define inline_speed ecb_noinline static
394#endif 1602#endif
1603
1604/*****************************************************************************/
1605/* raw syscall wrappers */
1606
1607#if EV_NEED_SYSCALL
1608
1609#include <sys/syscall.h>
1610
1611/*
1612 * define some syscall wrappers for common architectures
1613 * this is mostly for nice looks during debugging, not performance.
1614 * our syscalls return < 0, not == -1, on error. which is good
1615 * enough for linux aio.
1616 * TODO: arm is also common nowadays, maybe even mips and x86
1617 * TODO: after implementing this, it suddenly looks like overkill, but its hard to remove...
1618 */
1619#if __GNUC__ && __linux && ECB_AMD64 && !defined __OPTIMIZE_SIZE__
1620 /* the costly errno access probably kills this for size optimisation */
1621
1622 #define ev_syscall(nr,narg,arg1,arg2,arg3,arg4,arg5,arg6) \
1623 ({ \
1624 long res; \
1625 register unsigned long r6 __asm__ ("r9" ); \
1626 register unsigned long r5 __asm__ ("r8" ); \
1627 register unsigned long r4 __asm__ ("r10"); \
1628 register unsigned long r3 __asm__ ("rdx"); \
1629 register unsigned long r2 __asm__ ("rsi"); \
1630 register unsigned long r1 __asm__ ("rdi"); \
1631 if (narg >= 6) r6 = (unsigned long)(arg6); \
1632 if (narg >= 5) r5 = (unsigned long)(arg5); \
1633 if (narg >= 4) r4 = (unsigned long)(arg4); \
1634 if (narg >= 3) r3 = (unsigned long)(arg3); \
1635 if (narg >= 2) r2 = (unsigned long)(arg2); \
1636 if (narg >= 1) r1 = (unsigned long)(arg1); \
1637 __asm__ __volatile__ ( \
1638 "syscall\n\t" \
1639 : "=a" (res) \
1640 : "0" (nr), "r" (r1), "r" (r2), "r" (r3), "r" (r4), "r" (r5) \
1641 : "cc", "r11", "cx", "memory"); \
1642 errno = -res; \
1643 res; \
1644 })
1645
1646#endif
1647
1648#ifdef ev_syscall
1649 #define ev_syscall0(nr) ev_syscall (nr, 0, 0, 0, 0, 0, 0, 0)
1650 #define ev_syscall1(nr,arg1) ev_syscall (nr, 1, arg1, 0, 0, 0, 0, 0)
1651 #define ev_syscall2(nr,arg1,arg2) ev_syscall (nr, 2, arg1, arg2, 0, 0, 0, 0)
1652 #define ev_syscall3(nr,arg1,arg2,arg3) ev_syscall (nr, 3, arg1, arg2, arg3, 0, 0, 0)
1653 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) ev_syscall (nr, 3, arg1, arg2, arg3, arg4, 0, 0)
1654 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) ev_syscall (nr, 5, arg1, arg2, arg3, arg4, arg5, 0)
1655 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) ev_syscall (nr, 6, arg1, arg2, arg3, arg4, arg5,arg6)
1656#else
1657 #define ev_syscall0(nr) syscall (nr)
1658 #define ev_syscall1(nr,arg1) syscall (nr, arg1)
1659 #define ev_syscall2(nr,arg1,arg2) syscall (nr, arg1, arg2)
1660 #define ev_syscall3(nr,arg1,arg2,arg3) syscall (nr, arg1, arg2, arg3)
1661 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) syscall (nr, arg1, arg2, arg3, arg4)
1662 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) syscall (nr, arg1, arg2, arg3, arg4, arg5)
1663 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) syscall (nr, arg1, arg2, arg3, arg4, arg5,arg6)
1664#endif
1665
1666#endif
1667
1668/*****************************************************************************/
395 1669
396#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1670#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
397 1671
398#if EV_MINPRI == EV_MAXPRI 1672#if EV_MINPRI == EV_MAXPRI
399# define ABSPRI(w) (((W)w), 0) 1673# define ABSPRI(w) (((W)w), 0)
400#else 1674#else
401# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1675# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
402#endif 1676#endif
403 1677
404#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1678#define EMPTY /* required for microsofts broken pseudo-c compiler */
405#define EMPTY2(a,b) /* used to suppress some warnings */
406 1679
407typedef ev_watcher *W; 1680typedef ev_watcher *W;
408typedef ev_watcher_list *WL; 1681typedef ev_watcher_list *WL;
409typedef ev_watcher_time *WT; 1682typedef ev_watcher_time *WT;
410 1683
411#define ev_active(w) ((W)(w))->active 1684#define ev_active(w) ((W)(w))->active
412#define ev_at(w) ((WT)(w))->at 1685#define ev_at(w) ((WT)(w))->at
413 1686
414#if EV_USE_REALTIME 1687#if EV_USE_REALTIME
415/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 1688/* sig_atomic_t is used to avoid per-thread variables or locking but still */
416/* giving it a reasonably high chance of working on typical architetcures */ 1689/* giving it a reasonably high chance of working on typical architectures */
417static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 1690static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
418#endif 1691#endif
419 1692
420#if EV_USE_MONOTONIC 1693#if EV_USE_MONOTONIC
421static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 1694static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
422#endif 1695#endif
423 1696
1697#ifndef EV_FD_TO_WIN32_HANDLE
1698# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
1699#endif
1700#ifndef EV_WIN32_HANDLE_TO_FD
1701# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
1702#endif
1703#ifndef EV_WIN32_CLOSE_FD
1704# define EV_WIN32_CLOSE_FD(fd) close (fd)
1705#endif
1706
424#ifdef _WIN32 1707#ifdef _WIN32
425# include "ev_win32.c" 1708# include "ev_win32.c"
426#endif 1709#endif
427 1710
428/*****************************************************************************/ 1711/*****************************************************************************/
429 1712
1713#if EV_USE_LINUXAIO
1714# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
1715#endif
1716
1717/* define a suitable floor function (only used by periodics atm) */
1718
1719#if EV_USE_FLOOR
1720# include <math.h>
1721# define ev_floor(v) floor (v)
1722#else
1723
1724#include <float.h>
1725
1726/* a floor() replacement function, should be independent of ev_tstamp type */
1727ecb_noinline
1728static ev_tstamp
1729ev_floor (ev_tstamp v)
1730{
1731 /* the choice of shift factor is not terribly important */
1732#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1733 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1734#else
1735 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1736#endif
1737
1738 /* special treatment for negative arguments */
1739 if (ecb_expect_false (v < 0.))
1740 {
1741 ev_tstamp f = -ev_floor (-v);
1742
1743 return f - (f == v ? 0 : 1);
1744 }
1745
1746 /* argument too large for an unsigned long? then reduce it */
1747 if (ecb_expect_false (v >= shift))
1748 {
1749 ev_tstamp f;
1750
1751 if (v == v - 1.)
1752 return v; /* very large numbers are assumed to be integer */
1753
1754 f = shift * ev_floor (v * (1. / shift));
1755 return f + ev_floor (v - f);
1756 }
1757
1758 /* fits into an unsigned long */
1759 return (unsigned long)v;
1760}
1761
1762#endif
1763
1764/*****************************************************************************/
1765
1766#ifdef __linux
1767# include <sys/utsname.h>
1768#endif
1769
1770ecb_noinline ecb_cold
1771static unsigned int
1772ev_linux_version (void)
1773{
1774#ifdef __linux
1775 unsigned int v = 0;
1776 struct utsname buf;
1777 int i;
1778 char *p = buf.release;
1779
1780 if (uname (&buf))
1781 return 0;
1782
1783 for (i = 3+1; --i; )
1784 {
1785 unsigned int c = 0;
1786
1787 for (;;)
1788 {
1789 if (*p >= '0' && *p <= '9')
1790 c = c * 10 + *p++ - '0';
1791 else
1792 {
1793 p += *p == '.';
1794 break;
1795 }
1796 }
1797
1798 v = (v << 8) | c;
1799 }
1800
1801 return v;
1802#else
1803 return 0;
1804#endif
1805}
1806
1807/*****************************************************************************/
1808
1809#if EV_AVOID_STDIO
1810ecb_noinline ecb_cold
1811static void
1812ev_printerr (const char *msg)
1813{
1814 write (STDERR_FILENO, msg, strlen (msg));
1815}
1816#endif
1817
430static void (*syserr_cb)(const char *msg); 1818static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
431 1819
1820ecb_cold
432void 1821void
433ev_set_syserr_cb (void (*cb)(const char *msg)) 1822ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
434{ 1823{
435 syserr_cb = cb; 1824 syserr_cb = cb;
436} 1825}
437 1826
438static void noinline 1827ecb_noinline ecb_cold
1828static void
439ev_syserr (const char *msg) 1829ev_syserr (const char *msg)
440{ 1830{
441 if (!msg) 1831 if (!msg)
442 msg = "(libev) system error"; 1832 msg = "(libev) system error";
443 1833
444 if (syserr_cb) 1834 if (syserr_cb)
445 syserr_cb (msg); 1835 syserr_cb (msg);
446 else 1836 else
447 { 1837 {
1838#if EV_AVOID_STDIO
1839 ev_printerr (msg);
1840 ev_printerr (": ");
1841 ev_printerr (strerror (errno));
1842 ev_printerr ("\n");
1843#else
448 perror (msg); 1844 perror (msg);
1845#endif
449 abort (); 1846 abort ();
450 } 1847 }
451} 1848}
452 1849
453static void * 1850static void *
454ev_realloc_emul (void *ptr, long size) 1851ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
455{ 1852{
456 /* some systems, notably openbsd and darwin, fail to properly 1853 /* some systems, notably openbsd and darwin, fail to properly
457 * implement realloc (x, 0) (as required by both ansi c-98 and 1854 * implement realloc (x, 0) (as required by both ansi c-89 and
458 * the single unix specification, so work around them here. 1855 * the single unix specification, so work around them here.
1856 * recently, also (at least) fedora and debian started breaking it,
1857 * despite documenting it otherwise.
459 */ 1858 */
460 1859
461 if (size) 1860 if (size)
462 return realloc (ptr, size); 1861 return realloc (ptr, size);
463 1862
464 free (ptr); 1863 free (ptr);
465 return 0; 1864 return 0;
466} 1865}
467 1866
468static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1867static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
469 1868
1869ecb_cold
470void 1870void
471ev_set_allocator (void *(*cb)(void *ptr, long size)) 1871ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
472{ 1872{
473 alloc = cb; 1873 alloc = cb;
474} 1874}
475 1875
476inline_speed void * 1876inline_speed void *
… …
478{ 1878{
479 ptr = alloc (ptr, size); 1879 ptr = alloc (ptr, size);
480 1880
481 if (!ptr && size) 1881 if (!ptr && size)
482 { 1882 {
1883#if EV_AVOID_STDIO
1884 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1885#else
483 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1886 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1887#endif
484 abort (); 1888 abort ();
485 } 1889 }
486 1890
487 return ptr; 1891 return ptr;
488} 1892}
… …
490#define ev_malloc(size) ev_realloc (0, (size)) 1894#define ev_malloc(size) ev_realloc (0, (size))
491#define ev_free(ptr) ev_realloc ((ptr), 0) 1895#define ev_free(ptr) ev_realloc ((ptr), 0)
492 1896
493/*****************************************************************************/ 1897/*****************************************************************************/
494 1898
1899/* set in reify when reification needed */
1900#define EV_ANFD_REIFY 1
1901
495/* file descriptor info structure */ 1902/* file descriptor info structure */
496typedef struct 1903typedef struct
497{ 1904{
498 WL head; 1905 WL head;
499 unsigned char events; /* the events watched for */ 1906 unsigned char events; /* the events watched for */
500 unsigned char reify; /* flag set when this ANFD needs reification */ 1907 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
501 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1908 unsigned char emask; /* some backends store the actual kernel mask in here */
502 unsigned char unused; 1909 unsigned char eflags; /* flags field for use by backends */
503#if EV_USE_EPOLL 1910#if EV_USE_EPOLL
504 unsigned int egen; /* generation counter to counter epoll bugs */ 1911 unsigned int egen; /* generation counter to counter epoll bugs */
505#endif 1912#endif
506#if EV_SELECT_IS_WINSOCKET 1913#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
507 SOCKET handle; 1914 SOCKET handle;
1915#endif
1916#if EV_USE_IOCP
1917 OVERLAPPED or, ow;
508#endif 1918#endif
509} ANFD; 1919} ANFD;
510 1920
511/* stores the pending event set for a given watcher */ 1921/* stores the pending event set for a given watcher */
512typedef struct 1922typedef struct
… …
554 #undef VAR 1964 #undef VAR
555 }; 1965 };
556 #include "ev_wrap.h" 1966 #include "ev_wrap.h"
557 1967
558 static struct ev_loop default_loop_struct; 1968 static struct ev_loop default_loop_struct;
559 struct ev_loop *ev_default_loop_ptr; 1969 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
560 1970
561#else 1971#else
562 1972
563 ev_tstamp ev_rt_now; 1973 EV_API_DECL ev_tstamp ev_rt_now = EV_TS_CONST (0.); /* needs to be initialised to make it a definition despite extern */
564 #define VAR(name,decl) static decl; 1974 #define VAR(name,decl) static decl;
565 #include "ev_vars.h" 1975 #include "ev_vars.h"
566 #undef VAR 1976 #undef VAR
567 1977
568 static int ev_default_loop_ptr; 1978 static int ev_default_loop_ptr;
569 1979
570#endif 1980#endif
571 1981
1982#if EV_FEATURE_API
1983# define EV_RELEASE_CB if (ecb_expect_false (release_cb)) release_cb (EV_A)
1984# define EV_ACQUIRE_CB if (ecb_expect_false (acquire_cb)) acquire_cb (EV_A)
1985# define EV_INVOKE_PENDING invoke_cb (EV_A)
1986#else
1987# define EV_RELEASE_CB (void)0
1988# define EV_ACQUIRE_CB (void)0
1989# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
1990#endif
1991
1992#define EVBREAK_RECURSE 0x80
1993
572/*****************************************************************************/ 1994/*****************************************************************************/
573 1995
574#ifndef EV_HAVE_EV_TIME 1996#ifndef EV_HAVE_EV_TIME
575ev_tstamp 1997ev_tstamp
576ev_time (void) 1998ev_time (void) EV_NOEXCEPT
577{ 1999{
578#if EV_USE_REALTIME 2000#if EV_USE_REALTIME
579 if (expect_true (have_realtime)) 2001 if (ecb_expect_true (have_realtime))
580 { 2002 {
581 struct timespec ts; 2003 struct timespec ts;
582 clock_gettime (CLOCK_REALTIME, &ts); 2004 clock_gettime (CLOCK_REALTIME, &ts);
583 return ts.tv_sec + ts.tv_nsec * 1e-9; 2005 return EV_TS_GET (ts);
584 } 2006 }
585#endif 2007#endif
586 2008
2009 {
587 struct timeval tv; 2010 struct timeval tv;
588 gettimeofday (&tv, 0); 2011 gettimeofday (&tv, 0);
589 return tv.tv_sec + tv.tv_usec * 1e-6; 2012 return EV_TV_GET (tv);
2013 }
590} 2014}
591#endif 2015#endif
592 2016
593inline_size ev_tstamp 2017inline_size ev_tstamp
594get_clock (void) 2018get_clock (void)
595{ 2019{
596#if EV_USE_MONOTONIC 2020#if EV_USE_MONOTONIC
597 if (expect_true (have_monotonic)) 2021 if (ecb_expect_true (have_monotonic))
598 { 2022 {
599 struct timespec ts; 2023 struct timespec ts;
600 clock_gettime (CLOCK_MONOTONIC, &ts); 2024 clock_gettime (CLOCK_MONOTONIC, &ts);
601 return ts.tv_sec + ts.tv_nsec * 1e-9; 2025 return EV_TS_GET (ts);
602 } 2026 }
603#endif 2027#endif
604 2028
605 return ev_time (); 2029 return ev_time ();
606} 2030}
607 2031
608#if EV_MULTIPLICITY 2032#if EV_MULTIPLICITY
609ev_tstamp 2033ev_tstamp
610ev_now (EV_P) 2034ev_now (EV_P) EV_NOEXCEPT
611{ 2035{
612 return ev_rt_now; 2036 return ev_rt_now;
613} 2037}
614#endif 2038#endif
615 2039
616void 2040void
617ev_sleep (ev_tstamp delay) 2041ev_sleep (ev_tstamp delay) EV_NOEXCEPT
618{ 2042{
619 if (delay > 0.) 2043 if (delay > EV_TS_CONST (0.))
620 { 2044 {
621#if EV_USE_NANOSLEEP 2045#if EV_USE_NANOSLEEP
622 struct timespec ts; 2046 struct timespec ts;
623 2047
624 ts.tv_sec = (time_t)delay; 2048 EV_TS_SET (ts, delay);
625 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
626
627 nanosleep (&ts, 0); 2049 nanosleep (&ts, 0);
628#elif defined(_WIN32) 2050#elif defined _WIN32
2051 /* maybe this should round up, as ms is very low resolution */
2052 /* compared to select (µs) or nanosleep (ns) */
629 Sleep ((unsigned long)(delay * 1e3)); 2053 Sleep ((unsigned long)(EV_TS_TO_MSEC (delay)));
630#else 2054#else
631 struct timeval tv; 2055 struct timeval tv;
632 2056
633 tv.tv_sec = (time_t)delay;
634 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
635
636 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 2057 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
637 /* somehting not guaranteed by newer posix versions, but guaranteed */ 2058 /* something not guaranteed by newer posix versions, but guaranteed */
638 /* by older ones */ 2059 /* by older ones */
2060 EV_TV_SET (tv, delay);
639 select (0, 0, 0, 0, &tv); 2061 select (0, 0, 0, 0, &tv);
640#endif 2062#endif
641 } 2063 }
642} 2064}
643 2065
644/*****************************************************************************/ 2066/*****************************************************************************/
645 2067
646#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 2068#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
647 2069
648/* find a suitable new size for the given array, */ 2070/* find a suitable new size for the given array, */
649/* hopefully by rounding to a ncie-to-malloc size */ 2071/* hopefully by rounding to a nice-to-malloc size */
650inline_size int 2072inline_size int
651array_nextsize (int elem, int cur, int cnt) 2073array_nextsize (int elem, int cur, int cnt)
652{ 2074{
653 int ncur = cur + 1; 2075 int ncur = cur + 1;
654 2076
655 do 2077 do
656 ncur <<= 1; 2078 ncur <<= 1;
657 while (cnt > ncur); 2079 while (cnt > ncur);
658 2080
659 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 2081 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
660 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 2082 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
661 { 2083 {
662 ncur *= elem; 2084 ncur *= elem;
663 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 2085 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
664 ncur = ncur - sizeof (void *) * 4; 2086 ncur = ncur - sizeof (void *) * 4;
… …
666 } 2088 }
667 2089
668 return ncur; 2090 return ncur;
669} 2091}
670 2092
671static noinline void * 2093ecb_noinline ecb_cold
2094static void *
672array_realloc (int elem, void *base, int *cur, int cnt) 2095array_realloc (int elem, void *base, int *cur, int cnt)
673{ 2096{
674 *cur = array_nextsize (elem, *cur, cnt); 2097 *cur = array_nextsize (elem, *cur, cnt);
675 return ev_realloc (base, elem * *cur); 2098 return ev_realloc (base, elem * *cur);
676} 2099}
677 2100
2101#define array_needsize_noinit(base,offset,count)
2102
678#define array_init_zero(base,count) \ 2103#define array_needsize_zerofill(base,offset,count) \
679 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 2104 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
680 2105
681#define array_needsize(type,base,cur,cnt,init) \ 2106#define array_needsize(type,base,cur,cnt,init) \
682 if (expect_false ((cnt) > (cur))) \ 2107 if (ecb_expect_false ((cnt) > (cur))) \
683 { \ 2108 { \
684 int ocur_ = (cur); \ 2109 ecb_unused int ocur_ = (cur); \
685 (base) = (type *)array_realloc \ 2110 (base) = (type *)array_realloc \
686 (sizeof (type), (base), &(cur), (cnt)); \ 2111 (sizeof (type), (base), &(cur), (cnt)); \
687 init ((base) + (ocur_), (cur) - ocur_); \ 2112 init ((base), ocur_, ((cur) - ocur_)); \
688 } 2113 }
689 2114
690#if 0 2115#if 0
691#define array_slim(type,stem) \ 2116#define array_slim(type,stem) \
692 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2117 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
… …
701 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 2126 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
702 2127
703/*****************************************************************************/ 2128/*****************************************************************************/
704 2129
705/* dummy callback for pending events */ 2130/* dummy callback for pending events */
706static void noinline 2131ecb_noinline
2132static void
707pendingcb (EV_P_ ev_prepare *w, int revents) 2133pendingcb (EV_P_ ev_prepare *w, int revents)
708{ 2134{
709} 2135}
710 2136
711void noinline 2137ecb_noinline
2138void
712ev_feed_event (EV_P_ void *w, int revents) 2139ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
713{ 2140{
714 W w_ = (W)w; 2141 W w_ = (W)w;
715 int pri = ABSPRI (w_); 2142 int pri = ABSPRI (w_);
716 2143
717 if (expect_false (w_->pending)) 2144 if (ecb_expect_false (w_->pending))
718 pendings [pri][w_->pending - 1].events |= revents; 2145 pendings [pri][w_->pending - 1].events |= revents;
719 else 2146 else
720 { 2147 {
721 w_->pending = ++pendingcnt [pri]; 2148 w_->pending = ++pendingcnt [pri];
722 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2149 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
723 pendings [pri][w_->pending - 1].w = w_; 2150 pendings [pri][w_->pending - 1].w = w_;
724 pendings [pri][w_->pending - 1].events = revents; 2151 pendings [pri][w_->pending - 1].events = revents;
725 } 2152 }
2153
2154 pendingpri = NUMPRI - 1;
726} 2155}
727 2156
728inline_speed void 2157inline_speed void
729feed_reverse (EV_P_ W w) 2158feed_reverse (EV_P_ W w)
730{ 2159{
731 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2160 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
732 rfeeds [rfeedcnt++] = w; 2161 rfeeds [rfeedcnt++] = w;
733} 2162}
734 2163
735inline_size void 2164inline_size void
736feed_reverse_done (EV_P_ int revents) 2165feed_reverse_done (EV_P_ int revents)
… …
750} 2179}
751 2180
752/*****************************************************************************/ 2181/*****************************************************************************/
753 2182
754inline_speed void 2183inline_speed void
755fd_event (EV_P_ int fd, int revents) 2184fd_event_nocheck (EV_P_ int fd, int revents)
756{ 2185{
757 ANFD *anfd = anfds + fd; 2186 ANFD *anfd = anfds + fd;
758 ev_io *w; 2187 ev_io *w;
759 2188
760 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2189 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
764 if (ev) 2193 if (ev)
765 ev_feed_event (EV_A_ (W)w, ev); 2194 ev_feed_event (EV_A_ (W)w, ev);
766 } 2195 }
767} 2196}
768 2197
769void 2198/* do not submit kernel events for fds that have reify set */
2199/* because that means they changed while we were polling for new events */
2200inline_speed void
770ev_feed_fd_event (EV_P_ int fd, int revents) 2201fd_event (EV_P_ int fd, int revents)
2202{
2203 ANFD *anfd = anfds + fd;
2204
2205 if (ecb_expect_true (!anfd->reify))
2206 fd_event_nocheck (EV_A_ fd, revents);
2207}
2208
2209void
2210ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
771{ 2211{
772 if (fd >= 0 && fd < anfdmax) 2212 if (fd >= 0 && fd < anfdmax)
773 fd_event (EV_A_ fd, revents); 2213 fd_event_nocheck (EV_A_ fd, revents);
774} 2214}
775 2215
776/* make sure the external fd watch events are in-sync */ 2216/* make sure the external fd watch events are in-sync */
777/* with the kernel/libev internal state */ 2217/* with the kernel/libev internal state */
778inline_size void 2218inline_size void
779fd_reify (EV_P) 2219fd_reify (EV_P)
780{ 2220{
781 int i; 2221 int i;
782 2222
2223#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
2224 for (i = 0; i < fdchangecnt; ++i)
2225 {
2226 int fd = fdchanges [i];
2227 ANFD *anfd = anfds + fd;
2228
2229 if (anfd->reify & EV__IOFDSET && anfd->head)
2230 {
2231 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
2232
2233 if (handle != anfd->handle)
2234 {
2235 unsigned long arg;
2236
2237 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
2238
2239 /* handle changed, but fd didn't - we need to do it in two steps */
2240 backend_modify (EV_A_ fd, anfd->events, 0);
2241 anfd->events = 0;
2242 anfd->handle = handle;
2243 }
2244 }
2245 }
2246#endif
2247
783 for (i = 0; i < fdchangecnt; ++i) 2248 for (i = 0; i < fdchangecnt; ++i)
784 { 2249 {
785 int fd = fdchanges [i]; 2250 int fd = fdchanges [i];
786 ANFD *anfd = anfds + fd; 2251 ANFD *anfd = anfds + fd;
787 ev_io *w; 2252 ev_io *w;
788 2253
789 unsigned char events = 0; 2254 unsigned char o_events = anfd->events;
2255 unsigned char o_reify = anfd->reify;
790 2256
791 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2257 anfd->reify = 0;
792 events |= (unsigned char)w->events;
793 2258
794#if EV_SELECT_IS_WINSOCKET 2259 /*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
795 if (events)
796 { 2260 {
797 unsigned long arg; 2261 anfd->events = 0;
798 #ifdef EV_FD_TO_WIN32_HANDLE 2262
799 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 2263 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
800 #else 2264 anfd->events |= (unsigned char)w->events;
801 anfd->handle = _get_osfhandle (fd); 2265
802 #endif 2266 if (o_events != anfd->events)
803 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 2267 o_reify = EV__IOFDSET; /* actually |= */
804 } 2268 }
805#endif
806 2269
807 { 2270 if (o_reify & EV__IOFDSET)
808 unsigned char o_events = anfd->events;
809 unsigned char o_reify = anfd->reify;
810
811 anfd->reify = 0;
812 anfd->events = events;
813
814 if (o_events != events || o_reify & EV__IOFDSET)
815 backend_modify (EV_A_ fd, o_events, events); 2271 backend_modify (EV_A_ fd, o_events, anfd->events);
816 }
817 } 2272 }
818 2273
819 fdchangecnt = 0; 2274 fdchangecnt = 0;
820} 2275}
821 2276
822/* something about the given fd changed */ 2277/* something about the given fd changed */
823inline_size void 2278inline_size
2279void
824fd_change (EV_P_ int fd, int flags) 2280fd_change (EV_P_ int fd, int flags)
825{ 2281{
826 unsigned char reify = anfds [fd].reify; 2282 unsigned char reify = anfds [fd].reify;
827 anfds [fd].reify |= flags; 2283 anfds [fd].reify |= flags;
828 2284
829 if (expect_true (!reify)) 2285 if (ecb_expect_true (!reify))
830 { 2286 {
831 ++fdchangecnt; 2287 ++fdchangecnt;
832 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2288 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
833 fdchanges [fdchangecnt - 1] = fd; 2289 fdchanges [fdchangecnt - 1] = fd;
834 } 2290 }
835} 2291}
836 2292
837/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2293/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
838inline_speed void 2294inline_speed ecb_cold void
839fd_kill (EV_P_ int fd) 2295fd_kill (EV_P_ int fd)
840{ 2296{
841 ev_io *w; 2297 ev_io *w;
842 2298
843 while ((w = (ev_io *)anfds [fd].head)) 2299 while ((w = (ev_io *)anfds [fd].head))
… …
845 ev_io_stop (EV_A_ w); 2301 ev_io_stop (EV_A_ w);
846 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2302 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
847 } 2303 }
848} 2304}
849 2305
850/* check whether the given fd is atcually valid, for error recovery */ 2306/* check whether the given fd is actually valid, for error recovery */
851inline_size int 2307inline_size ecb_cold int
852fd_valid (int fd) 2308fd_valid (int fd)
853{ 2309{
854#ifdef _WIN32 2310#ifdef _WIN32
855 return _get_osfhandle (fd) != -1; 2311 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
856#else 2312#else
857 return fcntl (fd, F_GETFD) != -1; 2313 return fcntl (fd, F_GETFD) != -1;
858#endif 2314#endif
859} 2315}
860 2316
861/* called on EBADF to verify fds */ 2317/* called on EBADF to verify fds */
862static void noinline 2318ecb_noinline ecb_cold
2319static void
863fd_ebadf (EV_P) 2320fd_ebadf (EV_P)
864{ 2321{
865 int fd; 2322 int fd;
866 2323
867 for (fd = 0; fd < anfdmax; ++fd) 2324 for (fd = 0; fd < anfdmax; ++fd)
… …
869 if (!fd_valid (fd) && errno == EBADF) 2326 if (!fd_valid (fd) && errno == EBADF)
870 fd_kill (EV_A_ fd); 2327 fd_kill (EV_A_ fd);
871} 2328}
872 2329
873/* called on ENOMEM in select/poll to kill some fds and retry */ 2330/* called on ENOMEM in select/poll to kill some fds and retry */
874static void noinline 2331ecb_noinline ecb_cold
2332static void
875fd_enomem (EV_P) 2333fd_enomem (EV_P)
876{ 2334{
877 int fd; 2335 int fd;
878 2336
879 for (fd = anfdmax; fd--; ) 2337 for (fd = anfdmax; fd--; )
880 if (anfds [fd].events) 2338 if (anfds [fd].events)
881 { 2339 {
882 fd_kill (EV_A_ fd); 2340 fd_kill (EV_A_ fd);
883 return; 2341 break;
884 } 2342 }
885} 2343}
886 2344
887/* usually called after fork if backend needs to re-arm all fds from scratch */ 2345/* usually called after fork if backend needs to re-arm all fds from scratch */
888static void noinline 2346ecb_noinline
2347static void
889fd_rearm_all (EV_P) 2348fd_rearm_all (EV_P)
890{ 2349{
891 int fd; 2350 int fd;
892 2351
893 for (fd = 0; fd < anfdmax; ++fd) 2352 for (fd = 0; fd < anfdmax; ++fd)
894 if (anfds [fd].events) 2353 if (anfds [fd].events)
895 { 2354 {
896 anfds [fd].events = 0; 2355 anfds [fd].events = 0;
897 anfds [fd].emask = 0; 2356 anfds [fd].emask = 0;
898 fd_change (EV_A_ fd, EV__IOFDSET | 1); 2357 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
899 } 2358 }
900} 2359}
901 2360
2361/* used to prepare libev internal fd's */
2362/* this is not fork-safe */
2363inline_speed void
2364fd_intern (int fd)
2365{
2366#ifdef _WIN32
2367 unsigned long arg = 1;
2368 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
2369#else
2370 fcntl (fd, F_SETFD, FD_CLOEXEC);
2371 fcntl (fd, F_SETFL, O_NONBLOCK);
2372#endif
2373}
2374
902/*****************************************************************************/ 2375/*****************************************************************************/
903 2376
904/* 2377/*
905 * the heap functions want a real array index. array index 0 uis guaranteed to not 2378 * the heap functions want a real array index. array index 0 is guaranteed to not
906 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 2379 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
907 * the branching factor of the d-tree. 2380 * the branching factor of the d-tree.
908 */ 2381 */
909 2382
910/* 2383/*
… …
932 ev_tstamp minat; 2405 ev_tstamp minat;
933 ANHE *minpos; 2406 ANHE *minpos;
934 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; 2407 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
935 2408
936 /* find minimum child */ 2409 /* find minimum child */
937 if (expect_true (pos + DHEAP - 1 < E)) 2410 if (ecb_expect_true (pos + DHEAP - 1 < E))
938 { 2411 {
939 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2412 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
940 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2413 if ( minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
941 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2414 if ( minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
942 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2415 if ( minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
943 } 2416 }
944 else if (pos < E) 2417 else if (pos < E)
945 { 2418 {
946 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2419 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
947 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2420 if (pos + 1 < E && minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
948 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2421 if (pos + 2 < E && minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
949 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2422 if (pos + 3 < E && minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
950 } 2423 }
951 else 2424 else
952 break; 2425 break;
953 2426
954 if (ANHE_at (he) <= minat) 2427 if (ANHE_at (he) <= minat)
… …
962 2435
963 heap [k] = he; 2436 heap [k] = he;
964 ev_active (ANHE_w (he)) = k; 2437 ev_active (ANHE_w (he)) = k;
965} 2438}
966 2439
967#else /* 4HEAP */ 2440#else /* not 4HEAP */
968 2441
969#define HEAP0 1 2442#define HEAP0 1
970#define HPARENT(k) ((k) >> 1) 2443#define HPARENT(k) ((k) >> 1)
971#define UPHEAP_DONE(p,k) (!(p)) 2444#define UPHEAP_DONE(p,k) (!(p))
972 2445
… …
978 2451
979 for (;;) 2452 for (;;)
980 { 2453 {
981 int c = k << 1; 2454 int c = k << 1;
982 2455
983 if (c > N + HEAP0 - 1) 2456 if (c >= N + HEAP0)
984 break; 2457 break;
985 2458
986 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 2459 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
987 ? 1 : 0; 2460 ? 1 : 0;
988 2461
… …
1024 2497
1025/* move an element suitably so it is in a correct place */ 2498/* move an element suitably so it is in a correct place */
1026inline_size void 2499inline_size void
1027adjustheap (ANHE *heap, int N, int k) 2500adjustheap (ANHE *heap, int N, int k)
1028{ 2501{
1029 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 2502 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1030 upheap (heap, k); 2503 upheap (heap, k);
1031 else 2504 else
1032 downheap (heap, N, k); 2505 downheap (heap, N, k);
1033} 2506}
1034 2507
… …
1047/*****************************************************************************/ 2520/*****************************************************************************/
1048 2521
1049/* associate signal watchers to a signal signal */ 2522/* associate signal watchers to a signal signal */
1050typedef struct 2523typedef struct
1051{ 2524{
2525 EV_ATOMIC_T pending;
2526#if EV_MULTIPLICITY
2527 EV_P;
2528#endif
1052 WL head; 2529 WL head;
1053 EV_ATOMIC_T gotsig;
1054} ANSIG; 2530} ANSIG;
1055 2531
1056static ANSIG *signals; 2532static ANSIG signals [EV_NSIG - 1];
1057static int signalmax;
1058
1059static EV_ATOMIC_T gotsig;
1060 2533
1061/*****************************************************************************/ 2534/*****************************************************************************/
1062 2535
1063/* used to prepare libev internal fd's */ 2536#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1064/* this is not fork-safe */ 2537
2538ecb_noinline ecb_cold
2539static void
2540evpipe_init (EV_P)
2541{
2542 if (!ev_is_active (&pipe_w))
2543 {
2544 int fds [2];
2545
2546# if EV_USE_EVENTFD
2547 fds [0] = -1;
2548 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
2549 if (fds [1] < 0 && errno == EINVAL)
2550 fds [1] = eventfd (0, 0);
2551
2552 if (fds [1] < 0)
2553# endif
2554 {
2555 while (pipe (fds))
2556 ev_syserr ("(libev) error creating signal/async pipe");
2557
2558 fd_intern (fds [0]);
2559 }
2560
2561 evpipe [0] = fds [0];
2562
2563 if (evpipe [1] < 0)
2564 evpipe [1] = fds [1]; /* first call, set write fd */
2565 else
2566 {
2567 /* on subsequent calls, do not change evpipe [1] */
2568 /* so that evpipe_write can always rely on its value. */
2569 /* this branch does not do anything sensible on windows, */
2570 /* so must not be executed on windows */
2571
2572 dup2 (fds [1], evpipe [1]);
2573 close (fds [1]);
2574 }
2575
2576 fd_intern (evpipe [1]);
2577
2578 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2579 ev_io_start (EV_A_ &pipe_w);
2580 ev_unref (EV_A); /* watcher should not keep loop alive */
2581 }
2582}
2583
1065inline_speed void 2584inline_speed void
1066fd_intern (int fd) 2585evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1067{ 2586{
1068#ifdef _WIN32 2587 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1069 unsigned long arg = 1;
1070 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1071#else
1072 fcntl (fd, F_SETFD, FD_CLOEXEC);
1073 fcntl (fd, F_SETFL, O_NONBLOCK);
1074#endif
1075}
1076 2588
1077static void noinline 2589 if (ecb_expect_true (*flag))
1078evpipe_init (EV_P) 2590 return;
1079{ 2591
1080 if (!ev_is_active (&pipe_w)) 2592 *flag = 1;
2593 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2594
2595 pipe_write_skipped = 1;
2596
2597 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2598
2599 if (pipe_write_wanted)
1081 { 2600 {
2601 int old_errno;
2602
2603 pipe_write_skipped = 0;
2604 ECB_MEMORY_FENCE_RELEASE;
2605
2606 old_errno = errno; /* save errno because write will clobber it */
2607
1082#if EV_USE_EVENTFD 2608#if EV_USE_EVENTFD
1083 if ((evfd = eventfd (0, 0)) >= 0) 2609 if (evpipe [0] < 0)
1084 { 2610 {
1085 evpipe [0] = -1; 2611 uint64_t counter = 1;
1086 fd_intern (evfd); 2612 write (evpipe [1], &counter, sizeof (uint64_t));
1087 ev_io_set (&pipe_w, evfd, EV_READ);
1088 } 2613 }
1089 else 2614 else
1090#endif 2615#endif
1091 { 2616 {
1092 while (pipe (evpipe)) 2617#ifdef _WIN32
1093 ev_syserr ("(libev) error creating signal/async pipe"); 2618 WSABUF buf;
1094 2619 DWORD sent;
1095 fd_intern (evpipe [0]); 2620 buf.buf = (char *)&buf;
1096 fd_intern (evpipe [1]); 2621 buf.len = 1;
1097 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2622 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2623#else
2624 write (evpipe [1], &(evpipe [1]), 1);
2625#endif
1098 } 2626 }
1099
1100 ev_io_start (EV_A_ &pipe_w);
1101 ev_unref (EV_A); /* watcher should not keep loop alive */
1102 }
1103}
1104
1105inline_size void
1106evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1107{
1108 if (!*flag)
1109 {
1110 int old_errno = errno; /* save errno because write might clobber it */
1111
1112 *flag = 1;
1113
1114#if EV_USE_EVENTFD
1115 if (evfd >= 0)
1116 {
1117 uint64_t counter = 1;
1118 write (evfd, &counter, sizeof (uint64_t));
1119 }
1120 else
1121#endif
1122 write (evpipe [1], &old_errno, 1);
1123 2627
1124 errno = old_errno; 2628 errno = old_errno;
1125 } 2629 }
1126} 2630}
1127 2631
1128/* called whenever the libev signal pipe */ 2632/* called whenever the libev signal pipe */
1129/* got some events (signal, async) */ 2633/* got some events (signal, async) */
1130static void 2634static void
1131pipecb (EV_P_ ev_io *iow, int revents) 2635pipecb (EV_P_ ev_io *iow, int revents)
1132{ 2636{
2637 int i;
2638
2639 if (revents & EV_READ)
2640 {
1133#if EV_USE_EVENTFD 2641#if EV_USE_EVENTFD
1134 if (evfd >= 0) 2642 if (evpipe [0] < 0)
1135 { 2643 {
1136 uint64_t counter; 2644 uint64_t counter;
1137 read (evfd, &counter, sizeof (uint64_t)); 2645 read (evpipe [1], &counter, sizeof (uint64_t));
1138 } 2646 }
1139 else 2647 else
1140#endif 2648#endif
1141 { 2649 {
1142 char dummy; 2650 char dummy[4];
2651#ifdef _WIN32
2652 WSABUF buf;
2653 DWORD recvd;
2654 DWORD flags = 0;
2655 buf.buf = dummy;
2656 buf.len = sizeof (dummy);
2657 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2658#else
1143 read (evpipe [0], &dummy, 1); 2659 read (evpipe [0], &dummy, sizeof (dummy));
2660#endif
2661 }
2662 }
2663
2664 pipe_write_skipped = 0;
2665
2666 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2667
2668#if EV_SIGNAL_ENABLE
2669 if (sig_pending)
1144 } 2670 {
2671 sig_pending = 0;
1145 2672
1146 if (gotsig && ev_is_default_loop (EV_A)) 2673 ECB_MEMORY_FENCE;
1147 {
1148 int signum;
1149 gotsig = 0;
1150 2674
1151 for (signum = signalmax; signum--; ) 2675 for (i = EV_NSIG - 1; i--; )
1152 if (signals [signum].gotsig) 2676 if (ecb_expect_false (signals [i].pending))
1153 ev_feed_signal_event (EV_A_ signum + 1); 2677 ev_feed_signal_event (EV_A_ i + 1);
1154 } 2678 }
2679#endif
1155 2680
1156#if EV_ASYNC_ENABLE 2681#if EV_ASYNC_ENABLE
1157 if (gotasync) 2682 if (async_pending)
1158 { 2683 {
1159 int i; 2684 async_pending = 0;
1160 gotasync = 0; 2685
2686 ECB_MEMORY_FENCE;
1161 2687
1162 for (i = asynccnt; i--; ) 2688 for (i = asynccnt; i--; )
1163 if (asyncs [i]->sent) 2689 if (asyncs [i]->sent)
1164 { 2690 {
1165 asyncs [i]->sent = 0; 2691 asyncs [i]->sent = 0;
2692 ECB_MEMORY_FENCE_RELEASE;
1166 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2693 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1167 } 2694 }
1168 } 2695 }
1169#endif 2696#endif
1170} 2697}
1171 2698
1172/*****************************************************************************/ 2699/*****************************************************************************/
1173 2700
2701void
2702ev_feed_signal (int signum) EV_NOEXCEPT
2703{
2704#if EV_MULTIPLICITY
2705 EV_P;
2706 ECB_MEMORY_FENCE_ACQUIRE;
2707 EV_A = signals [signum - 1].loop;
2708
2709 if (!EV_A)
2710 return;
2711#endif
2712
2713 signals [signum - 1].pending = 1;
2714 evpipe_write (EV_A_ &sig_pending);
2715}
2716
1174static void 2717static void
1175ev_sighandler (int signum) 2718ev_sighandler (int signum)
1176{ 2719{
2720#ifdef _WIN32
2721 signal (signum, ev_sighandler);
2722#endif
2723
2724 ev_feed_signal (signum);
2725}
2726
2727ecb_noinline
2728void
2729ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
2730{
2731 WL w;
2732
2733 if (ecb_expect_false (signum <= 0 || signum >= EV_NSIG))
2734 return;
2735
2736 --signum;
2737
1177#if EV_MULTIPLICITY 2738#if EV_MULTIPLICITY
1178 struct ev_loop *loop = &default_loop_struct; 2739 /* it is permissible to try to feed a signal to the wrong loop */
1179#endif 2740 /* or, likely more useful, feeding a signal nobody is waiting for */
1180 2741
1181#if _WIN32 2742 if (ecb_expect_false (signals [signum].loop != EV_A))
1182 signal (signum, ev_sighandler);
1183#endif
1184
1185 signals [signum - 1].gotsig = 1;
1186 evpipe_write (EV_A_ &gotsig);
1187}
1188
1189void noinline
1190ev_feed_signal_event (EV_P_ int signum)
1191{
1192 WL w;
1193
1194#if EV_MULTIPLICITY
1195 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1196#endif
1197
1198 --signum;
1199
1200 if (signum < 0 || signum >= signalmax)
1201 return; 2743 return;
2744#endif
1202 2745
1203 signals [signum].gotsig = 0; 2746 signals [signum].pending = 0;
2747 ECB_MEMORY_FENCE_RELEASE;
1204 2748
1205 for (w = signals [signum].head; w; w = w->next) 2749 for (w = signals [signum].head; w; w = w->next)
1206 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2750 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1207} 2751}
1208 2752
2753#if EV_USE_SIGNALFD
2754static void
2755sigfdcb (EV_P_ ev_io *iow, int revents)
2756{
2757 struct signalfd_siginfo si[2], *sip; /* these structs are big */
2758
2759 for (;;)
2760 {
2761 ssize_t res = read (sigfd, si, sizeof (si));
2762
2763 /* not ISO-C, as res might be -1, but works with SuS */
2764 for (sip = si; (char *)sip < (char *)si + res; ++sip)
2765 ev_feed_signal_event (EV_A_ sip->ssi_signo);
2766
2767 if (res < (ssize_t)sizeof (si))
2768 break;
2769 }
2770}
2771#endif
2772
2773#endif
2774
1209/*****************************************************************************/ 2775/*****************************************************************************/
1210 2776
2777#if EV_CHILD_ENABLE
1211static WL childs [EV_PID_HASHSIZE]; 2778static WL childs [EV_PID_HASHSIZE];
1212
1213#ifndef _WIN32
1214 2779
1215static ev_signal childev; 2780static ev_signal childev;
1216 2781
1217#ifndef WIFCONTINUED 2782#ifndef WIFCONTINUED
1218# define WIFCONTINUED(status) 0 2783# define WIFCONTINUED(status) 0
… …
1223child_reap (EV_P_ int chain, int pid, int status) 2788child_reap (EV_P_ int chain, int pid, int status)
1224{ 2789{
1225 ev_child *w; 2790 ev_child *w;
1226 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2791 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1227 2792
1228 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2793 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1229 { 2794 {
1230 if ((w->pid == pid || !w->pid) 2795 if ((w->pid == pid || !w->pid)
1231 && (!traced || (w->flags & 1))) 2796 && (!traced || (w->flags & 1)))
1232 { 2797 {
1233 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2798 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1258 /* make sure we are called again until all children have been reaped */ 2823 /* make sure we are called again until all children have been reaped */
1259 /* we need to do it this way so that the callback gets called before we continue */ 2824 /* we need to do it this way so that the callback gets called before we continue */
1260 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2825 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1261 2826
1262 child_reap (EV_A_ pid, pid, status); 2827 child_reap (EV_A_ pid, pid, status);
1263 if (EV_PID_HASHSIZE > 1) 2828 if ((EV_PID_HASHSIZE) > 1)
1264 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2829 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1265} 2830}
1266 2831
1267#endif 2832#endif
1268 2833
1269/*****************************************************************************/ 2834/*****************************************************************************/
1270 2835
2836#if EV_USE_IOCP
2837# include "ev_iocp.c"
2838#endif
1271#if EV_USE_PORT 2839#if EV_USE_PORT
1272# include "ev_port.c" 2840# include "ev_port.c"
1273#endif 2841#endif
1274#if EV_USE_KQUEUE 2842#if EV_USE_KQUEUE
1275# include "ev_kqueue.c" 2843# include "ev_kqueue.c"
1276#endif 2844#endif
1277#if EV_USE_EPOLL 2845#if EV_USE_EPOLL
1278# include "ev_epoll.c" 2846# include "ev_epoll.c"
1279#endif 2847#endif
2848#if EV_USE_LINUXAIO
2849# include "ev_linuxaio.c"
2850#endif
2851#if EV_USE_IOURING
2852# include "ev_iouring.c"
2853#endif
1280#if EV_USE_POLL 2854#if EV_USE_POLL
1281# include "ev_poll.c" 2855# include "ev_poll.c"
1282#endif 2856#endif
1283#if EV_USE_SELECT 2857#if EV_USE_SELECT
1284# include "ev_select.c" 2858# include "ev_select.c"
1285#endif 2859#endif
1286 2860
1287int 2861ecb_cold int
1288ev_version_major (void) 2862ev_version_major (void) EV_NOEXCEPT
1289{ 2863{
1290 return EV_VERSION_MAJOR; 2864 return EV_VERSION_MAJOR;
1291} 2865}
1292 2866
1293int 2867ecb_cold int
1294ev_version_minor (void) 2868ev_version_minor (void) EV_NOEXCEPT
1295{ 2869{
1296 return EV_VERSION_MINOR; 2870 return EV_VERSION_MINOR;
1297} 2871}
1298 2872
1299/* return true if we are running with elevated privileges and should ignore env variables */ 2873/* return true if we are running with elevated privileges and should ignore env variables */
1300int inline_size 2874inline_size ecb_cold int
1301enable_secure (void) 2875enable_secure (void)
1302{ 2876{
1303#ifdef _WIN32 2877#ifdef _WIN32
1304 return 0; 2878 return 0;
1305#else 2879#else
1306 return getuid () != geteuid () 2880 return getuid () != geteuid ()
1307 || getgid () != getegid (); 2881 || getgid () != getegid ();
1308#endif 2882#endif
1309} 2883}
1310 2884
2885ecb_cold
1311unsigned int 2886unsigned int
1312ev_supported_backends (void) 2887ev_supported_backends (void) EV_NOEXCEPT
1313{ 2888{
1314 unsigned int flags = 0; 2889 unsigned int flags = 0;
1315 2890
1316 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2891 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1317 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2892 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
1318 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 2893 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2894 if (EV_USE_LINUXAIO) flags |= EVBACKEND_LINUXAIO;
2895 if (EV_USE_IOURING ) flags |= EVBACKEND_IOURING;
1319 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 2896 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
1320 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2897 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
1321 2898
1322 return flags; 2899 return flags;
1323} 2900}
1324 2901
2902ecb_cold
1325unsigned int 2903unsigned int
1326ev_recommended_backends (void) 2904ev_recommended_backends (void) EV_NOEXCEPT
1327{ 2905{
1328 unsigned int flags = ev_supported_backends (); 2906 unsigned int flags = ev_supported_backends ();
1329 2907
1330#ifndef __NetBSD__ 2908#ifndef __NetBSD__
1331 /* kqueue is borked on everything but netbsd apparently */ 2909 /* kqueue is borked on everything but netbsd apparently */
… …
1335#ifdef __APPLE__ 2913#ifdef __APPLE__
1336 /* only select works correctly on that "unix-certified" platform */ 2914 /* only select works correctly on that "unix-certified" platform */
1337 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2915 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1338 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 2916 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1339#endif 2917#endif
2918#ifdef __FreeBSD__
2919 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2920#endif
2921
2922 /* TODO: linuxaio is very experimental */
2923#if !EV_RECOMMEND_LINUXAIO
2924 flags &= ~EVBACKEND_LINUXAIO;
2925#endif
2926 /* TODO: linuxaio is super experimental */
2927#if !EV_RECOMMEND_IOURING
2928 flags &= ~EVBACKEND_IOURING;
2929#endif
1340 2930
1341 return flags; 2931 return flags;
1342} 2932}
1343 2933
2934ecb_cold
1344unsigned int 2935unsigned int
1345ev_embeddable_backends (void) 2936ev_embeddable_backends (void) EV_NOEXCEPT
1346{ 2937{
1347 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2938 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1348 2939
1349 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2940 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1350 /* please fix it and tell me how to detect the fix */ 2941 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1351 flags &= ~EVBACKEND_EPOLL; 2942 flags &= ~EVBACKEND_EPOLL;
2943
2944 /* EVBACKEND_LINUXAIO is theoretically embeddable, but suffers from a performance overhead */
2945
2946 /* EVBACKEND_IOURING is practically embeddable, but the current implementation is not
2947 * because our backend_fd is the epoll fd we need as fallback.
2948 * if the kernel ever is fixed, this might change...
2949 */
1352 2950
1353 return flags; 2951 return flags;
1354} 2952}
1355 2953
1356unsigned int 2954unsigned int
1357ev_backend (EV_P) 2955ev_backend (EV_P) EV_NOEXCEPT
1358{ 2956{
1359 return backend; 2957 return backend;
1360} 2958}
1361 2959
2960#if EV_FEATURE_API
1362unsigned int 2961unsigned int
1363ev_loop_count (EV_P) 2962ev_iteration (EV_P) EV_NOEXCEPT
1364{ 2963{
1365 return loop_count; 2964 return loop_count;
1366} 2965}
1367 2966
1368unsigned int 2967unsigned int
1369ev_loop_depth (EV_P) 2968ev_depth (EV_P) EV_NOEXCEPT
1370{ 2969{
1371 return loop_depth; 2970 return loop_depth;
1372} 2971}
1373 2972
1374void 2973void
1375ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2974ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1376{ 2975{
1377 io_blocktime = interval; 2976 io_blocktime = interval;
1378} 2977}
1379 2978
1380void 2979void
1381ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2980ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1382{ 2981{
1383 timeout_blocktime = interval; 2982 timeout_blocktime = interval;
1384} 2983}
1385 2984
2985void
2986ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
2987{
2988 userdata = data;
2989}
2990
2991void *
2992ev_userdata (EV_P) EV_NOEXCEPT
2993{
2994 return userdata;
2995}
2996
2997void
2998ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
2999{
3000 invoke_cb = invoke_pending_cb;
3001}
3002
3003void
3004ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
3005{
3006 release_cb = release;
3007 acquire_cb = acquire;
3008}
3009#endif
3010
1386/* initialise a loop structure, must be zero-initialised */ 3011/* initialise a loop structure, must be zero-initialised */
1387static void noinline 3012ecb_noinline ecb_cold
3013static void
1388loop_init (EV_P_ unsigned int flags) 3014loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
1389{ 3015{
1390 if (!backend) 3016 if (!backend)
1391 { 3017 {
3018 origflags = flags;
3019
1392#if EV_USE_REALTIME 3020#if EV_USE_REALTIME
1393 if (!have_realtime) 3021 if (!have_realtime)
1394 { 3022 {
1395 struct timespec ts; 3023 struct timespec ts;
1396 3024
… …
1407 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 3035 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1408 have_monotonic = 1; 3036 have_monotonic = 1;
1409 } 3037 }
1410#endif 3038#endif
1411 3039
1412 ev_rt_now = ev_time ();
1413 mn_now = get_clock ();
1414 now_floor = mn_now;
1415 rtmn_diff = ev_rt_now - mn_now;
1416
1417 io_blocktime = 0.;
1418 timeout_blocktime = 0.;
1419 backend = 0;
1420 backend_fd = -1;
1421 gotasync = 0;
1422#if EV_USE_INOTIFY
1423 fs_fd = -2;
1424#endif
1425
1426 /* pid check not overridable via env */ 3040 /* pid check not overridable via env */
1427#ifndef _WIN32 3041#ifndef _WIN32
1428 if (flags & EVFLAG_FORKCHECK) 3042 if (flags & EVFLAG_FORKCHECK)
1429 curpid = getpid (); 3043 curpid = getpid ();
1430#endif 3044#endif
… …
1432 if (!(flags & EVFLAG_NOENV) 3046 if (!(flags & EVFLAG_NOENV)
1433 && !enable_secure () 3047 && !enable_secure ()
1434 && getenv ("LIBEV_FLAGS")) 3048 && getenv ("LIBEV_FLAGS"))
1435 flags = atoi (getenv ("LIBEV_FLAGS")); 3049 flags = atoi (getenv ("LIBEV_FLAGS"));
1436 3050
1437 if (!(flags & 0x0000ffffU)) 3051 ev_rt_now = ev_time ();
3052 mn_now = get_clock ();
3053 now_floor = mn_now;
3054 rtmn_diff = ev_rt_now - mn_now;
3055#if EV_FEATURE_API
3056 invoke_cb = ev_invoke_pending;
3057#endif
3058
3059 io_blocktime = 0.;
3060 timeout_blocktime = 0.;
3061 backend = 0;
3062 backend_fd = -1;
3063 sig_pending = 0;
3064#if EV_ASYNC_ENABLE
3065 async_pending = 0;
3066#endif
3067 pipe_write_skipped = 0;
3068 pipe_write_wanted = 0;
3069 evpipe [0] = -1;
3070 evpipe [1] = -1;
3071#if EV_USE_INOTIFY
3072 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
3073#endif
3074#if EV_USE_SIGNALFD
3075 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
3076#endif
3077
3078 if (!(flags & EVBACKEND_MASK))
1438 flags |= ev_recommended_backends (); 3079 flags |= ev_recommended_backends ();
1439 3080
3081#if EV_USE_IOCP
3082 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
3083#endif
1440#if EV_USE_PORT 3084#if EV_USE_PORT
1441 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 3085 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1442#endif 3086#endif
1443#if EV_USE_KQUEUE 3087#if EV_USE_KQUEUE
1444 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 3088 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
3089#endif
3090#if EV_USE_IOURING
3091 if (!backend && (flags & EVBACKEND_IOURING )) backend = iouring_init (EV_A_ flags);
3092#endif
3093#if EV_USE_LINUXAIO
3094 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
1445#endif 3095#endif
1446#if EV_USE_EPOLL 3096#if EV_USE_EPOLL
1447 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 3097 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
1448#endif 3098#endif
1449#if EV_USE_POLL 3099#if EV_USE_POLL
1450 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 3100 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
1451#endif 3101#endif
1452#if EV_USE_SELECT 3102#if EV_USE_SELECT
1453 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 3103 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
1454#endif 3104#endif
1455 3105
1456 ev_prepare_init (&pending_w, pendingcb); 3106 ev_prepare_init (&pending_w, pendingcb);
1457 3107
3108#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1458 ev_init (&pipe_w, pipecb); 3109 ev_init (&pipe_w, pipecb);
1459 ev_set_priority (&pipe_w, EV_MAXPRI); 3110 ev_set_priority (&pipe_w, EV_MAXPRI);
3111#endif
1460 } 3112 }
1461} 3113}
1462 3114
1463/* free up a loop structure */ 3115/* free up a loop structure */
1464static void noinline 3116ecb_cold
3117void
1465loop_destroy (EV_P) 3118ev_loop_destroy (EV_P)
1466{ 3119{
1467 int i; 3120 int i;
1468 3121
3122#if EV_MULTIPLICITY
3123 /* mimic free (0) */
3124 if (!EV_A)
3125 return;
3126#endif
3127
3128#if EV_CLEANUP_ENABLE
3129 /* queue cleanup watchers (and execute them) */
3130 if (ecb_expect_false (cleanupcnt))
3131 {
3132 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
3133 EV_INVOKE_PENDING;
3134 }
3135#endif
3136
3137#if EV_CHILD_ENABLE
3138 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
3139 {
3140 ev_ref (EV_A); /* child watcher */
3141 ev_signal_stop (EV_A_ &childev);
3142 }
3143#endif
3144
1469 if (ev_is_active (&pipe_w)) 3145 if (ev_is_active (&pipe_w))
1470 { 3146 {
1471 ev_ref (EV_A); /* signal watcher */ 3147 /*ev_ref (EV_A);*/
1472 ev_io_stop (EV_A_ &pipe_w); 3148 /*ev_io_stop (EV_A_ &pipe_w);*/
1473 3149
3150 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
3151 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
3152 }
3153
1474#if EV_USE_EVENTFD 3154#if EV_USE_SIGNALFD
1475 if (evfd >= 0) 3155 if (ev_is_active (&sigfd_w))
1476 close (evfd); 3156 close (sigfd);
1477#endif 3157#endif
1478
1479 if (evpipe [0] >= 0)
1480 {
1481 close (evpipe [0]);
1482 close (evpipe [1]);
1483 }
1484 }
1485 3158
1486#if EV_USE_INOTIFY 3159#if EV_USE_INOTIFY
1487 if (fs_fd >= 0) 3160 if (fs_fd >= 0)
1488 close (fs_fd); 3161 close (fs_fd);
1489#endif 3162#endif
1490 3163
1491 if (backend_fd >= 0) 3164 if (backend_fd >= 0)
1492 close (backend_fd); 3165 close (backend_fd);
1493 3166
3167#if EV_USE_IOCP
3168 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
3169#endif
1494#if EV_USE_PORT 3170#if EV_USE_PORT
1495 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3171 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1496#endif 3172#endif
1497#if EV_USE_KQUEUE 3173#if EV_USE_KQUEUE
1498 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3174 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
3175#endif
3176#if EV_USE_IOURING
3177 if (backend == EVBACKEND_IOURING ) iouring_destroy (EV_A);
3178#endif
3179#if EV_USE_LINUXAIO
3180 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
1499#endif 3181#endif
1500#if EV_USE_EPOLL 3182#if EV_USE_EPOLL
1501 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3183 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
1502#endif 3184#endif
1503#if EV_USE_POLL 3185#if EV_USE_POLL
1504 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3186 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
1505#endif 3187#endif
1506#if EV_USE_SELECT 3188#if EV_USE_SELECT
1507 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3189 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
1508#endif 3190#endif
1509 3191
1510 for (i = NUMPRI; i--; ) 3192 for (i = NUMPRI; i--; )
1511 { 3193 {
1512 array_free (pending, [i]); 3194 array_free (pending, [i]);
1513#if EV_IDLE_ENABLE 3195#if EV_IDLE_ENABLE
1514 array_free (idle, [i]); 3196 array_free (idle, [i]);
1515#endif 3197#endif
1516 } 3198 }
1517 3199
1518 ev_free (anfds); anfdmax = 0; 3200 ev_free (anfds); anfds = 0; anfdmax = 0;
1519 3201
1520 /* have to use the microsoft-never-gets-it-right macro */ 3202 /* have to use the microsoft-never-gets-it-right macro */
1521 array_free (rfeed, EMPTY); 3203 array_free (rfeed, EMPTY);
1522 array_free (fdchange, EMPTY); 3204 array_free (fdchange, EMPTY);
1523 array_free (timer, EMPTY); 3205 array_free (timer, EMPTY);
… …
1525 array_free (periodic, EMPTY); 3207 array_free (periodic, EMPTY);
1526#endif 3208#endif
1527#if EV_FORK_ENABLE 3209#if EV_FORK_ENABLE
1528 array_free (fork, EMPTY); 3210 array_free (fork, EMPTY);
1529#endif 3211#endif
3212#if EV_CLEANUP_ENABLE
3213 array_free (cleanup, EMPTY);
3214#endif
1530 array_free (prepare, EMPTY); 3215 array_free (prepare, EMPTY);
1531 array_free (check, EMPTY); 3216 array_free (check, EMPTY);
1532#if EV_ASYNC_ENABLE 3217#if EV_ASYNC_ENABLE
1533 array_free (async, EMPTY); 3218 array_free (async, EMPTY);
1534#endif 3219#endif
1535 3220
1536 backend = 0; 3221 backend = 0;
3222
3223#if EV_MULTIPLICITY
3224 if (ev_is_default_loop (EV_A))
3225#endif
3226 ev_default_loop_ptr = 0;
3227#if EV_MULTIPLICITY
3228 else
3229 ev_free (EV_A);
3230#endif
1537} 3231}
1538 3232
1539#if EV_USE_INOTIFY 3233#if EV_USE_INOTIFY
1540inline_size void infy_fork (EV_P); 3234inline_size void infy_fork (EV_P);
1541#endif 3235#endif
1542 3236
1543inline_size void 3237inline_size void
1544loop_fork (EV_P) 3238loop_fork (EV_P)
1545{ 3239{
1546#if EV_USE_PORT 3240#if EV_USE_PORT
1547 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3241 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1548#endif 3242#endif
1549#if EV_USE_KQUEUE 3243#if EV_USE_KQUEUE
1550 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 3244 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
3245#endif
3246#if EV_USE_IOURING
3247 if (backend == EVBACKEND_IOURING ) iouring_fork (EV_A);
3248#endif
3249#if EV_USE_LINUXAIO
3250 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
1551#endif 3251#endif
1552#if EV_USE_EPOLL 3252#if EV_USE_EPOLL
1553 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3253 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
1554#endif 3254#endif
1555#if EV_USE_INOTIFY 3255#if EV_USE_INOTIFY
1556 infy_fork (EV_A); 3256 infy_fork (EV_A);
1557#endif 3257#endif
1558 3258
3259#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1559 if (ev_is_active (&pipe_w)) 3260 if (ev_is_active (&pipe_w) && postfork != 2)
1560 { 3261 {
1561 /* this "locks" the handlers against writing to the pipe */ 3262 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1562 /* while we modify the fd vars */
1563 gotsig = 1;
1564#if EV_ASYNC_ENABLE
1565 gotasync = 1;
1566#endif
1567 3263
1568 ev_ref (EV_A); 3264 ev_ref (EV_A);
1569 ev_io_stop (EV_A_ &pipe_w); 3265 ev_io_stop (EV_A_ &pipe_w);
1570 3266
1571#if EV_USE_EVENTFD
1572 if (evfd >= 0)
1573 close (evfd);
1574#endif
1575
1576 if (evpipe [0] >= 0) 3267 if (evpipe [0] >= 0)
1577 { 3268 EV_WIN32_CLOSE_FD (evpipe [0]);
1578 close (evpipe [0]);
1579 close (evpipe [1]);
1580 }
1581 3269
1582 evpipe_init (EV_A); 3270 evpipe_init (EV_A);
1583 /* now iterate over everything, in case we missed something */ 3271 /* iterate over everything, in case we missed something before */
1584 pipecb (EV_A_ &pipe_w, EV_READ); 3272 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1585 } 3273 }
3274#endif
1586 3275
1587 postfork = 0; 3276 postfork = 0;
1588} 3277}
1589 3278
1590#if EV_MULTIPLICITY 3279#if EV_MULTIPLICITY
1591 3280
3281ecb_cold
1592struct ev_loop * 3282struct ev_loop *
1593ev_loop_new (unsigned int flags) 3283ev_loop_new (unsigned int flags) EV_NOEXCEPT
1594{ 3284{
1595 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3285 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1596 3286
1597 memset (loop, 0, sizeof (struct ev_loop)); 3287 memset (EV_A, 0, sizeof (struct ev_loop));
1598
1599 loop_init (EV_A_ flags); 3288 loop_init (EV_A_ flags);
1600 3289
1601 if (ev_backend (EV_A)) 3290 if (ev_backend (EV_A))
1602 return loop; 3291 return EV_A;
1603 3292
3293 ev_free (EV_A);
1604 return 0; 3294 return 0;
1605} 3295}
1606 3296
1607void 3297#endif /* multiplicity */
1608ev_loop_destroy (EV_P)
1609{
1610 loop_destroy (EV_A);
1611 ev_free (loop);
1612}
1613
1614void
1615ev_loop_fork (EV_P)
1616{
1617 postfork = 1; /* must be in line with ev_default_fork */
1618}
1619 3298
1620#if EV_VERIFY 3299#if EV_VERIFY
1621static void noinline 3300ecb_noinline ecb_cold
3301static void
1622verify_watcher (EV_P_ W w) 3302verify_watcher (EV_P_ W w)
1623{ 3303{
1624 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3304 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1625 3305
1626 if (w->pending) 3306 if (w->pending)
1627 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3307 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1628} 3308}
1629 3309
1630static void noinline 3310ecb_noinline ecb_cold
3311static void
1631verify_heap (EV_P_ ANHE *heap, int N) 3312verify_heap (EV_P_ ANHE *heap, int N)
1632{ 3313{
1633 int i; 3314 int i;
1634 3315
1635 for (i = HEAP0; i < N + HEAP0; ++i) 3316 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1640 3321
1641 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3322 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1642 } 3323 }
1643} 3324}
1644 3325
1645static void noinline 3326ecb_noinline ecb_cold
3327static void
1646array_verify (EV_P_ W *ws, int cnt) 3328array_verify (EV_P_ W *ws, int cnt)
1647{ 3329{
1648 while (cnt--) 3330 while (cnt--)
1649 { 3331 {
1650 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3332 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1651 verify_watcher (EV_A_ ws [cnt]); 3333 verify_watcher (EV_A_ ws [cnt]);
1652 } 3334 }
1653} 3335}
1654#endif 3336#endif
1655 3337
1656void 3338#if EV_FEATURE_API
1657ev_loop_verify (EV_P) 3339void ecb_cold
3340ev_verify (EV_P) EV_NOEXCEPT
1658{ 3341{
1659#if EV_VERIFY 3342#if EV_VERIFY
1660 int i; 3343 int i;
1661 WL w; 3344 WL w, w2;
1662 3345
1663 assert (activecnt >= -1); 3346 assert (activecnt >= -1);
1664 3347
1665 assert (fdchangemax >= fdchangecnt); 3348 assert (fdchangemax >= fdchangecnt);
1666 for (i = 0; i < fdchangecnt; ++i) 3349 for (i = 0; i < fdchangecnt; ++i)
1667 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3350 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1668 3351
1669 assert (anfdmax >= 0); 3352 assert (anfdmax >= 0);
1670 for (i = 0; i < anfdmax; ++i) 3353 for (i = 0; i < anfdmax; ++i)
3354 {
3355 int j = 0;
3356
1671 for (w = anfds [i].head; w; w = w->next) 3357 for (w = w2 = anfds [i].head; w; w = w->next)
1672 { 3358 {
1673 verify_watcher (EV_A_ (W)w); 3359 verify_watcher (EV_A_ (W)w);
3360
3361 if (j++ & 1)
3362 {
3363 assert (("libev: io watcher list contains a loop", w != w2));
3364 w2 = w2->next;
3365 }
3366
1674 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3367 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1675 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 3368 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1676 } 3369 }
3370 }
1677 3371
1678 assert (timermax >= timercnt); 3372 assert (timermax >= timercnt);
1679 verify_heap (EV_A_ timers, timercnt); 3373 verify_heap (EV_A_ timers, timercnt);
1680 3374
1681#if EV_PERIODIC_ENABLE 3375#if EV_PERIODIC_ENABLE
… …
1696#if EV_FORK_ENABLE 3390#if EV_FORK_ENABLE
1697 assert (forkmax >= forkcnt); 3391 assert (forkmax >= forkcnt);
1698 array_verify (EV_A_ (W *)forks, forkcnt); 3392 array_verify (EV_A_ (W *)forks, forkcnt);
1699#endif 3393#endif
1700 3394
3395#if EV_CLEANUP_ENABLE
3396 assert (cleanupmax >= cleanupcnt);
3397 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
3398#endif
3399
1701#if EV_ASYNC_ENABLE 3400#if EV_ASYNC_ENABLE
1702 assert (asyncmax >= asynccnt); 3401 assert (asyncmax >= asynccnt);
1703 array_verify (EV_A_ (W *)asyncs, asynccnt); 3402 array_verify (EV_A_ (W *)asyncs, asynccnt);
1704#endif 3403#endif
1705 3404
3405#if EV_PREPARE_ENABLE
1706 assert (preparemax >= preparecnt); 3406 assert (preparemax >= preparecnt);
1707 array_verify (EV_A_ (W *)prepares, preparecnt); 3407 array_verify (EV_A_ (W *)prepares, preparecnt);
3408#endif
1708 3409
3410#if EV_CHECK_ENABLE
1709 assert (checkmax >= checkcnt); 3411 assert (checkmax >= checkcnt);
1710 array_verify (EV_A_ (W *)checks, checkcnt); 3412 array_verify (EV_A_ (W *)checks, checkcnt);
3413#endif
1711 3414
1712# if 0 3415# if 0
3416#if EV_CHILD_ENABLE
1713 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 3417 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1714 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 3418 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
3419#endif
1715# endif 3420# endif
1716#endif 3421#endif
1717} 3422}
1718 3423#endif
1719#endif /* multiplicity */
1720 3424
1721#if EV_MULTIPLICITY 3425#if EV_MULTIPLICITY
3426ecb_cold
1722struct ev_loop * 3427struct ev_loop *
1723ev_default_loop_init (unsigned int flags)
1724#else 3428#else
1725int 3429int
3430#endif
1726ev_default_loop (unsigned int flags) 3431ev_default_loop (unsigned int flags) EV_NOEXCEPT
1727#endif
1728{ 3432{
1729 if (!ev_default_loop_ptr) 3433 if (!ev_default_loop_ptr)
1730 { 3434 {
1731#if EV_MULTIPLICITY 3435#if EV_MULTIPLICITY
1732 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 3436 EV_P = ev_default_loop_ptr = &default_loop_struct;
1733#else 3437#else
1734 ev_default_loop_ptr = 1; 3438 ev_default_loop_ptr = 1;
1735#endif 3439#endif
1736 3440
1737 loop_init (EV_A_ flags); 3441 loop_init (EV_A_ flags);
1738 3442
1739 if (ev_backend (EV_A)) 3443 if (ev_backend (EV_A))
1740 { 3444 {
1741#ifndef _WIN32 3445#if EV_CHILD_ENABLE
1742 ev_signal_init (&childev, childcb, SIGCHLD); 3446 ev_signal_init (&childev, childcb, SIGCHLD);
1743 ev_set_priority (&childev, EV_MAXPRI); 3447 ev_set_priority (&childev, EV_MAXPRI);
1744 ev_signal_start (EV_A_ &childev); 3448 ev_signal_start (EV_A_ &childev);
1745 ev_unref (EV_A); /* child watcher should not keep loop alive */ 3449 ev_unref (EV_A); /* child watcher should not keep loop alive */
1746#endif 3450#endif
… …
1751 3455
1752 return ev_default_loop_ptr; 3456 return ev_default_loop_ptr;
1753} 3457}
1754 3458
1755void 3459void
1756ev_default_destroy (void) 3460ev_loop_fork (EV_P) EV_NOEXCEPT
1757{ 3461{
1758#if EV_MULTIPLICITY 3462 postfork = 1;
1759 struct ev_loop *loop = ev_default_loop_ptr;
1760#endif
1761
1762 ev_default_loop_ptr = 0;
1763
1764#ifndef _WIN32
1765 ev_ref (EV_A); /* child watcher */
1766 ev_signal_stop (EV_A_ &childev);
1767#endif
1768
1769 loop_destroy (EV_A);
1770}
1771
1772void
1773ev_default_fork (void)
1774{
1775#if EV_MULTIPLICITY
1776 struct ev_loop *loop = ev_default_loop_ptr;
1777#endif
1778
1779 postfork = 1; /* must be in line with ev_loop_fork */
1780} 3463}
1781 3464
1782/*****************************************************************************/ 3465/*****************************************************************************/
1783 3466
1784void 3467void
1785ev_invoke (EV_P_ void *w, int revents) 3468ev_invoke (EV_P_ void *w, int revents)
1786{ 3469{
1787 EV_CB_INVOKE ((W)w, revents); 3470 EV_CB_INVOKE ((W)w, revents);
1788} 3471}
1789 3472
1790inline_speed void 3473unsigned int
1791call_pending (EV_P) 3474ev_pending_count (EV_P) EV_NOEXCEPT
1792{ 3475{
1793 int pri; 3476 int pri;
3477 unsigned int count = 0;
1794 3478
1795 for (pri = NUMPRI; pri--; ) 3479 for (pri = NUMPRI; pri--; )
3480 count += pendingcnt [pri];
3481
3482 return count;
3483}
3484
3485ecb_noinline
3486void
3487ev_invoke_pending (EV_P)
3488{
3489 pendingpri = NUMPRI;
3490
3491 do
3492 {
3493 --pendingpri;
3494
3495 /* pendingpri possibly gets modified in the inner loop */
1796 while (pendingcnt [pri]) 3496 while (pendingcnt [pendingpri])
1797 { 3497 {
1798 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3498 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
1799 3499
1800 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1801 /* ^ this is no longer true, as pending_w could be here */
1802
1803 p->w->pending = 0; 3500 p->w->pending = 0;
1804 EV_CB_INVOKE (p->w, p->events); 3501 EV_CB_INVOKE (p->w, p->events);
1805 EV_FREQUENT_CHECK; 3502 EV_FREQUENT_CHECK;
1806 } 3503 }
3504 }
3505 while (pendingpri);
1807} 3506}
1808 3507
1809#if EV_IDLE_ENABLE 3508#if EV_IDLE_ENABLE
1810/* make idle watchers pending. this handles the "call-idle */ 3509/* make idle watchers pending. this handles the "call-idle */
1811/* only when higher priorities are idle" logic */ 3510/* only when higher priorities are idle" logic */
1812inline_size void 3511inline_size void
1813idle_reify (EV_P) 3512idle_reify (EV_P)
1814{ 3513{
1815 if (expect_false (idleall)) 3514 if (ecb_expect_false (idleall))
1816 { 3515 {
1817 int pri; 3516 int pri;
1818 3517
1819 for (pri = NUMPRI; pri--; ) 3518 for (pri = NUMPRI; pri--; )
1820 { 3519 {
… …
1850 { 3549 {
1851 ev_at (w) += w->repeat; 3550 ev_at (w) += w->repeat;
1852 if (ev_at (w) < mn_now) 3551 if (ev_at (w) < mn_now)
1853 ev_at (w) = mn_now; 3552 ev_at (w) = mn_now;
1854 3553
1855 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 3554 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > EV_TS_CONST (0.)));
1856 3555
1857 ANHE_at_cache (timers [HEAP0]); 3556 ANHE_at_cache (timers [HEAP0]);
1858 downheap (timers, timercnt, HEAP0); 3557 downheap (timers, timercnt, HEAP0);
1859 } 3558 }
1860 else 3559 else
… …
1863 EV_FREQUENT_CHECK; 3562 EV_FREQUENT_CHECK;
1864 feed_reverse (EV_A_ (W)w); 3563 feed_reverse (EV_A_ (W)w);
1865 } 3564 }
1866 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 3565 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1867 3566
1868 feed_reverse_done (EV_A_ EV_TIMEOUT); 3567 feed_reverse_done (EV_A_ EV_TIMER);
1869 } 3568 }
1870} 3569}
1871 3570
1872#if EV_PERIODIC_ENABLE 3571#if EV_PERIODIC_ENABLE
3572
3573ecb_noinline
3574static void
3575periodic_recalc (EV_P_ ev_periodic *w)
3576{
3577 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3578 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3579
3580 /* the above almost always errs on the low side */
3581 while (at <= ev_rt_now)
3582 {
3583 ev_tstamp nat = at + w->interval;
3584
3585 /* when resolution fails us, we use ev_rt_now */
3586 if (ecb_expect_false (nat == at))
3587 {
3588 at = ev_rt_now;
3589 break;
3590 }
3591
3592 at = nat;
3593 }
3594
3595 ev_at (w) = at;
3596}
3597
1873/* make periodics pending */ 3598/* make periodics pending */
1874inline_size void 3599inline_size void
1875periodics_reify (EV_P) 3600periodics_reify (EV_P)
1876{ 3601{
1877 EV_FREQUENT_CHECK; 3602 EV_FREQUENT_CHECK;
1878 3603
1879 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3604 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1880 { 3605 {
1881 int feed_count = 0;
1882
1883 do 3606 do
1884 { 3607 {
1885 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3608 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
1886 3609
1887 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3610 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
1896 ANHE_at_cache (periodics [HEAP0]); 3619 ANHE_at_cache (periodics [HEAP0]);
1897 downheap (periodics, periodiccnt, HEAP0); 3620 downheap (periodics, periodiccnt, HEAP0);
1898 } 3621 }
1899 else if (w->interval) 3622 else if (w->interval)
1900 { 3623 {
1901 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3624 periodic_recalc (EV_A_ w);
1902 /* if next trigger time is not sufficiently in the future, put it there */
1903 /* this might happen because of floating point inexactness */
1904 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1905 {
1906 ev_at (w) += w->interval;
1907
1908 /* if interval is unreasonably low we might still have a time in the past */
1909 /* so correct this. this will make the periodic very inexact, but the user */
1910 /* has effectively asked to get triggered more often than possible */
1911 if (ev_at (w) < ev_rt_now)
1912 ev_at (w) = ev_rt_now;
1913 }
1914
1915 ANHE_at_cache (periodics [HEAP0]); 3625 ANHE_at_cache (periodics [HEAP0]);
1916 downheap (periodics, periodiccnt, HEAP0); 3626 downheap (periodics, periodiccnt, HEAP0);
1917 } 3627 }
1918 else 3628 else
1919 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3629 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
1926 feed_reverse_done (EV_A_ EV_PERIODIC); 3636 feed_reverse_done (EV_A_ EV_PERIODIC);
1927 } 3637 }
1928} 3638}
1929 3639
1930/* simply recalculate all periodics */ 3640/* simply recalculate all periodics */
1931/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 3641/* TODO: maybe ensure that at least one event happens when jumping forward? */
1932static void noinline 3642ecb_noinline ecb_cold
3643static void
1933periodics_reschedule (EV_P) 3644periodics_reschedule (EV_P)
1934{ 3645{
1935 int i; 3646 int i;
1936 3647
1937 /* adjust periodics after time jump */ 3648 /* adjust periodics after time jump */
… …
1940 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3651 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1941 3652
1942 if (w->reschedule_cb) 3653 if (w->reschedule_cb)
1943 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3654 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1944 else if (w->interval) 3655 else if (w->interval)
1945 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3656 periodic_recalc (EV_A_ w);
1946 3657
1947 ANHE_at_cache (periodics [i]); 3658 ANHE_at_cache (periodics [i]);
1948 } 3659 }
1949 3660
1950 reheap (periodics, periodiccnt); 3661 reheap (periodics, periodiccnt);
1951} 3662}
1952#endif 3663#endif
1953 3664
1954/* adjust all timers by a given offset */ 3665/* adjust all timers by a given offset */
1955static void noinline 3666ecb_noinline ecb_cold
3667static void
1956timers_reschedule (EV_P_ ev_tstamp adjust) 3668timers_reschedule (EV_P_ ev_tstamp adjust)
1957{ 3669{
1958 int i; 3670 int i;
1959 3671
1960 for (i = 0; i < timercnt; ++i) 3672 for (i = 0; i < timercnt; ++i)
… …
1964 ANHE_at_cache (*he); 3676 ANHE_at_cache (*he);
1965 } 3677 }
1966} 3678}
1967 3679
1968/* fetch new monotonic and realtime times from the kernel */ 3680/* fetch new monotonic and realtime times from the kernel */
1969/* also detetc if there was a timejump, and act accordingly */ 3681/* also detect if there was a timejump, and act accordingly */
1970inline_speed void 3682inline_speed void
1971time_update (EV_P_ ev_tstamp max_block) 3683time_update (EV_P_ ev_tstamp max_block)
1972{ 3684{
1973#if EV_USE_MONOTONIC 3685#if EV_USE_MONOTONIC
1974 if (expect_true (have_monotonic)) 3686 if (ecb_expect_true (have_monotonic))
1975 { 3687 {
1976 int i; 3688 int i;
1977 ev_tstamp odiff = rtmn_diff; 3689 ev_tstamp odiff = rtmn_diff;
1978 3690
1979 mn_now = get_clock (); 3691 mn_now = get_clock ();
1980 3692
1981 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3693 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
1982 /* interpolate in the meantime */ 3694 /* interpolate in the meantime */
1983 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 3695 if (ecb_expect_true (mn_now - now_floor < EV_TS_CONST (MIN_TIMEJUMP * .5)))
1984 { 3696 {
1985 ev_rt_now = rtmn_diff + mn_now; 3697 ev_rt_now = rtmn_diff + mn_now;
1986 return; 3698 return;
1987 } 3699 }
1988 3700
… …
1997 * doesn't hurt either as we only do this on time-jumps or 3709 * doesn't hurt either as we only do this on time-jumps or
1998 * in the unlikely event of having been preempted here. 3710 * in the unlikely event of having been preempted here.
1999 */ 3711 */
2000 for (i = 4; --i; ) 3712 for (i = 4; --i; )
2001 { 3713 {
3714 ev_tstamp diff;
2002 rtmn_diff = ev_rt_now - mn_now; 3715 rtmn_diff = ev_rt_now - mn_now;
2003 3716
2004 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3717 diff = odiff - rtmn_diff;
3718
3719 if (ecb_expect_true ((diff < EV_TS_CONST (0.) ? -diff : diff) < EV_TS_CONST (MIN_TIMEJUMP)))
2005 return; /* all is well */ 3720 return; /* all is well */
2006 3721
2007 ev_rt_now = ev_time (); 3722 ev_rt_now = ev_time ();
2008 mn_now = get_clock (); 3723 mn_now = get_clock ();
2009 now_floor = mn_now; 3724 now_floor = mn_now;
… …
2018 else 3733 else
2019#endif 3734#endif
2020 { 3735 {
2021 ev_rt_now = ev_time (); 3736 ev_rt_now = ev_time ();
2022 3737
2023 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 3738 if (ecb_expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + EV_TS_CONST (MIN_TIMEJUMP)))
2024 { 3739 {
2025 /* adjust timers. this is easy, as the offset is the same for all of them */ 3740 /* adjust timers. this is easy, as the offset is the same for all of them */
2026 timers_reschedule (EV_A_ ev_rt_now - mn_now); 3741 timers_reschedule (EV_A_ ev_rt_now - mn_now);
2027#if EV_PERIODIC_ENABLE 3742#if EV_PERIODIC_ENABLE
2028 periodics_reschedule (EV_A); 3743 periodics_reschedule (EV_A);
… …
2031 3746
2032 mn_now = ev_rt_now; 3747 mn_now = ev_rt_now;
2033 } 3748 }
2034} 3749}
2035 3750
2036void 3751int
2037ev_loop (EV_P_ int flags) 3752ev_run (EV_P_ int flags)
2038{ 3753{
3754#if EV_FEATURE_API
2039 ++loop_depth; 3755 ++loop_depth;
3756#endif
2040 3757
3758 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
3759
2041 loop_done = EVUNLOOP_CANCEL; 3760 loop_done = EVBREAK_CANCEL;
2042 3761
2043 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 3762 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2044 3763
2045 do 3764 do
2046 { 3765 {
2047#if EV_VERIFY >= 2 3766#if EV_VERIFY >= 2
2048 ev_loop_verify (EV_A); 3767 ev_verify (EV_A);
2049#endif 3768#endif
2050 3769
2051#ifndef _WIN32 3770#ifndef _WIN32
2052 if (expect_false (curpid)) /* penalise the forking check even more */ 3771 if (ecb_expect_false (curpid)) /* penalise the forking check even more */
2053 if (expect_false (getpid () != curpid)) 3772 if (ecb_expect_false (getpid () != curpid))
2054 { 3773 {
2055 curpid = getpid (); 3774 curpid = getpid ();
2056 postfork = 1; 3775 postfork = 1;
2057 } 3776 }
2058#endif 3777#endif
2059 3778
2060#if EV_FORK_ENABLE 3779#if EV_FORK_ENABLE
2061 /* we might have forked, so queue fork handlers */ 3780 /* we might have forked, so queue fork handlers */
2062 if (expect_false (postfork)) 3781 if (ecb_expect_false (postfork))
2063 if (forkcnt) 3782 if (forkcnt)
2064 { 3783 {
2065 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3784 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2066 call_pending (EV_A); 3785 EV_INVOKE_PENDING;
2067 } 3786 }
2068#endif 3787#endif
2069 3788
3789#if EV_PREPARE_ENABLE
2070 /* queue prepare watchers (and execute them) */ 3790 /* queue prepare watchers (and execute them) */
2071 if (expect_false (preparecnt)) 3791 if (ecb_expect_false (preparecnt))
2072 { 3792 {
2073 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3793 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2074 call_pending (EV_A); 3794 EV_INVOKE_PENDING;
2075 } 3795 }
3796#endif
3797
3798 if (ecb_expect_false (loop_done))
3799 break;
2076 3800
2077 /* we might have forked, so reify kernel state if necessary */ 3801 /* we might have forked, so reify kernel state if necessary */
2078 if (expect_false (postfork)) 3802 if (ecb_expect_false (postfork))
2079 loop_fork (EV_A); 3803 loop_fork (EV_A);
2080 3804
2081 /* update fd-related kernel structures */ 3805 /* update fd-related kernel structures */
2082 fd_reify (EV_A); 3806 fd_reify (EV_A);
2083 3807
2084 /* calculate blocking time */ 3808 /* calculate blocking time */
2085 { 3809 {
2086 ev_tstamp waittime = 0.; 3810 ev_tstamp waittime = 0.;
2087 ev_tstamp sleeptime = 0.; 3811 ev_tstamp sleeptime = 0.;
2088 3812
3813 /* remember old timestamp for io_blocktime calculation */
3814 ev_tstamp prev_mn_now = mn_now;
3815
3816 /* update time to cancel out callback processing overhead */
3817 time_update (EV_A_ EV_TS_CONST (EV_TSTAMP_HUGE));
3818
3819 /* from now on, we want a pipe-wake-up */
3820 pipe_write_wanted = 1;
3821
3822 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3823
2089 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3824 if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2090 { 3825 {
2091 /* remember old timestamp for io_blocktime calculation */
2092 ev_tstamp prev_mn_now = mn_now;
2093
2094 /* update time to cancel out callback processing overhead */
2095 time_update (EV_A_ 1e100);
2096
2097 waittime = MAX_BLOCKTIME; 3826 waittime = EV_TS_CONST (MAX_BLOCKTIME);
2098 3827
2099 if (timercnt) 3828 if (timercnt)
2100 { 3829 {
2101 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3830 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2102 if (waittime > to) waittime = to; 3831 if (waittime > to) waittime = to;
2103 } 3832 }
2104 3833
2105#if EV_PERIODIC_ENABLE 3834#if EV_PERIODIC_ENABLE
2106 if (periodiccnt) 3835 if (periodiccnt)
2107 { 3836 {
2108 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3837 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2109 if (waittime > to) waittime = to; 3838 if (waittime > to) waittime = to;
2110 } 3839 }
2111#endif 3840#endif
2112 3841
2113 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3842 /* don't let timeouts decrease the waittime below timeout_blocktime */
2114 if (expect_false (waittime < timeout_blocktime)) 3843 if (ecb_expect_false (waittime < timeout_blocktime))
2115 waittime = timeout_blocktime; 3844 waittime = timeout_blocktime;
2116 3845
3846 /* at this point, we NEED to wait, so we have to ensure */
3847 /* to pass a minimum nonzero value to the backend */
3848 if (ecb_expect_false (waittime < backend_mintime))
3849 waittime = backend_mintime;
3850
2117 /* extra check because io_blocktime is commonly 0 */ 3851 /* extra check because io_blocktime is commonly 0 */
2118 if (expect_false (io_blocktime)) 3852 if (ecb_expect_false (io_blocktime))
2119 { 3853 {
2120 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3854 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2121 3855
2122 if (sleeptime > waittime - backend_fudge) 3856 if (sleeptime > waittime - backend_mintime)
2123 sleeptime = waittime - backend_fudge; 3857 sleeptime = waittime - backend_mintime;
2124 3858
2125 if (expect_true (sleeptime > 0.)) 3859 if (ecb_expect_true (sleeptime > EV_TS_CONST (0.)))
2126 { 3860 {
2127 ev_sleep (sleeptime); 3861 ev_sleep (sleeptime);
2128 waittime -= sleeptime; 3862 waittime -= sleeptime;
2129 } 3863 }
2130 } 3864 }
2131 } 3865 }
2132 3866
3867#if EV_FEATURE_API
2133 ++loop_count; 3868 ++loop_count;
3869#endif
3870 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2134 backend_poll (EV_A_ waittime); 3871 backend_poll (EV_A_ waittime);
3872 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3873
3874 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3875
3876 ECB_MEMORY_FENCE_ACQUIRE;
3877 if (pipe_write_skipped)
3878 {
3879 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3880 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3881 }
2135 3882
2136 /* update ev_rt_now, do magic */ 3883 /* update ev_rt_now, do magic */
2137 time_update (EV_A_ waittime + sleeptime); 3884 time_update (EV_A_ waittime + sleeptime);
2138 } 3885 }
2139 3886
… …
2146#if EV_IDLE_ENABLE 3893#if EV_IDLE_ENABLE
2147 /* queue idle watchers unless other events are pending */ 3894 /* queue idle watchers unless other events are pending */
2148 idle_reify (EV_A); 3895 idle_reify (EV_A);
2149#endif 3896#endif
2150 3897
3898#if EV_CHECK_ENABLE
2151 /* queue check watchers, to be executed first */ 3899 /* queue check watchers, to be executed first */
2152 if (expect_false (checkcnt)) 3900 if (ecb_expect_false (checkcnt))
2153 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3901 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3902#endif
2154 3903
2155 call_pending (EV_A); 3904 EV_INVOKE_PENDING;
2156 } 3905 }
2157 while (expect_true ( 3906 while (ecb_expect_true (
2158 activecnt 3907 activecnt
2159 && !loop_done 3908 && !loop_done
2160 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3909 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2161 )); 3910 ));
2162 3911
2163 if (loop_done == EVUNLOOP_ONE) 3912 if (loop_done == EVBREAK_ONE)
2164 loop_done = EVUNLOOP_CANCEL; 3913 loop_done = EVBREAK_CANCEL;
2165 3914
3915#if EV_FEATURE_API
2166 --loop_depth; 3916 --loop_depth;
2167} 3917#endif
2168 3918
3919 return activecnt;
3920}
3921
2169void 3922void
2170ev_unloop (EV_P_ int how) 3923ev_break (EV_P_ int how) EV_NOEXCEPT
2171{ 3924{
2172 loop_done = how; 3925 loop_done = how;
2173} 3926}
2174 3927
2175void 3928void
2176ev_ref (EV_P) 3929ev_ref (EV_P) EV_NOEXCEPT
2177{ 3930{
2178 ++activecnt; 3931 ++activecnt;
2179} 3932}
2180 3933
2181void 3934void
2182ev_unref (EV_P) 3935ev_unref (EV_P) EV_NOEXCEPT
2183{ 3936{
2184 --activecnt; 3937 --activecnt;
2185} 3938}
2186 3939
2187void 3940void
2188ev_now_update (EV_P) 3941ev_now_update (EV_P) EV_NOEXCEPT
2189{ 3942{
2190 time_update (EV_A_ 1e100); 3943 time_update (EV_A_ EV_TSTAMP_HUGE);
2191} 3944}
2192 3945
2193void 3946void
2194ev_suspend (EV_P) 3947ev_suspend (EV_P) EV_NOEXCEPT
2195{ 3948{
2196 ev_now_update (EV_A); 3949 ev_now_update (EV_A);
2197} 3950}
2198 3951
2199void 3952void
2200ev_resume (EV_P) 3953ev_resume (EV_P) EV_NOEXCEPT
2201{ 3954{
2202 ev_tstamp mn_prev = mn_now; 3955 ev_tstamp mn_prev = mn_now;
2203 3956
2204 ev_now_update (EV_A); 3957 ev_now_update (EV_A);
2205 timers_reschedule (EV_A_ mn_now - mn_prev); 3958 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2222inline_size void 3975inline_size void
2223wlist_del (WL *head, WL elem) 3976wlist_del (WL *head, WL elem)
2224{ 3977{
2225 while (*head) 3978 while (*head)
2226 { 3979 {
2227 if (*head == elem) 3980 if (ecb_expect_true (*head == elem))
2228 { 3981 {
2229 *head = elem->next; 3982 *head = elem->next;
2230 return; 3983 break;
2231 } 3984 }
2232 3985
2233 head = &(*head)->next; 3986 head = &(*head)->next;
2234 } 3987 }
2235} 3988}
… …
2244 w->pending = 0; 3997 w->pending = 0;
2245 } 3998 }
2246} 3999}
2247 4000
2248int 4001int
2249ev_clear_pending (EV_P_ void *w) 4002ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
2250{ 4003{
2251 W w_ = (W)w; 4004 W w_ = (W)w;
2252 int pending = w_->pending; 4005 int pending = w_->pending;
2253 4006
2254 if (expect_true (pending)) 4007 if (ecb_expect_true (pending))
2255 { 4008 {
2256 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 4009 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2257 p->w = (W)&pending_w; 4010 p->w = (W)&pending_w;
2258 w_->pending = 0; 4011 w_->pending = 0;
2259 return p->events; 4012 return p->events;
… …
2286 w->active = 0; 4039 w->active = 0;
2287} 4040}
2288 4041
2289/*****************************************************************************/ 4042/*****************************************************************************/
2290 4043
2291void noinline 4044ecb_noinline
4045void
2292ev_io_start (EV_P_ ev_io *w) 4046ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
2293{ 4047{
2294 int fd = w->fd; 4048 int fd = w->fd;
2295 4049
2296 if (expect_false (ev_is_active (w))) 4050 if (ecb_expect_false (ev_is_active (w)))
2297 return; 4051 return;
2298 4052
2299 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 4053 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2300 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 4054 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2301 4055
4056#if EV_VERIFY >= 2
4057 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
4058#endif
2302 EV_FREQUENT_CHECK; 4059 EV_FREQUENT_CHECK;
2303 4060
2304 ev_start (EV_A_ (W)w, 1); 4061 ev_start (EV_A_ (W)w, 1);
2305 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 4062 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
2306 wlist_add (&anfds[fd].head, (WL)w); 4063 wlist_add (&anfds[fd].head, (WL)w);
2307 4064
4065 /* common bug, apparently */
4066 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
4067
2308 fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1); 4068 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2309 w->events &= ~EV__IOFDSET; 4069 w->events &= ~EV__IOFDSET;
2310 4070
2311 EV_FREQUENT_CHECK; 4071 EV_FREQUENT_CHECK;
2312} 4072}
2313 4073
2314void noinline 4074ecb_noinline
4075void
2315ev_io_stop (EV_P_ ev_io *w) 4076ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
2316{ 4077{
2317 clear_pending (EV_A_ (W)w); 4078 clear_pending (EV_A_ (W)w);
2318 if (expect_false (!ev_is_active (w))) 4079 if (ecb_expect_false (!ev_is_active (w)))
2319 return; 4080 return;
2320 4081
2321 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 4082 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2322 4083
4084#if EV_VERIFY >= 2
4085 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
4086#endif
2323 EV_FREQUENT_CHECK; 4087 EV_FREQUENT_CHECK;
2324 4088
2325 wlist_del (&anfds[w->fd].head, (WL)w); 4089 wlist_del (&anfds[w->fd].head, (WL)w);
2326 ev_stop (EV_A_ (W)w); 4090 ev_stop (EV_A_ (W)w);
2327 4091
2328 fd_change (EV_A_ w->fd, 1); 4092 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2329 4093
2330 EV_FREQUENT_CHECK; 4094 EV_FREQUENT_CHECK;
2331} 4095}
2332 4096
2333void noinline 4097ecb_noinline
4098void
2334ev_timer_start (EV_P_ ev_timer *w) 4099ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
2335{ 4100{
2336 if (expect_false (ev_is_active (w))) 4101 if (ecb_expect_false (ev_is_active (w)))
2337 return; 4102 return;
2338 4103
2339 ev_at (w) += mn_now; 4104 ev_at (w) += mn_now;
2340 4105
2341 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 4106 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2342 4107
2343 EV_FREQUENT_CHECK; 4108 EV_FREQUENT_CHECK;
2344 4109
2345 ++timercnt; 4110 ++timercnt;
2346 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 4111 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
2347 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 4112 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
2348 ANHE_w (timers [ev_active (w)]) = (WT)w; 4113 ANHE_w (timers [ev_active (w)]) = (WT)w;
2349 ANHE_at_cache (timers [ev_active (w)]); 4114 ANHE_at_cache (timers [ev_active (w)]);
2350 upheap (timers, ev_active (w)); 4115 upheap (timers, ev_active (w));
2351 4116
2352 EV_FREQUENT_CHECK; 4117 EV_FREQUENT_CHECK;
2353 4118
2354 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 4119 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2355} 4120}
2356 4121
2357void noinline 4122ecb_noinline
4123void
2358ev_timer_stop (EV_P_ ev_timer *w) 4124ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
2359{ 4125{
2360 clear_pending (EV_A_ (W)w); 4126 clear_pending (EV_A_ (W)w);
2361 if (expect_false (!ev_is_active (w))) 4127 if (ecb_expect_false (!ev_is_active (w)))
2362 return; 4128 return;
2363 4129
2364 EV_FREQUENT_CHECK; 4130 EV_FREQUENT_CHECK;
2365 4131
2366 { 4132 {
… …
2368 4134
2369 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 4135 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2370 4136
2371 --timercnt; 4137 --timercnt;
2372 4138
2373 if (expect_true (active < timercnt + HEAP0)) 4139 if (ecb_expect_true (active < timercnt + HEAP0))
2374 { 4140 {
2375 timers [active] = timers [timercnt + HEAP0]; 4141 timers [active] = timers [timercnt + HEAP0];
2376 adjustheap (timers, timercnt, active); 4142 adjustheap (timers, timercnt, active);
2377 } 4143 }
2378 } 4144 }
2379 4145
2380 EV_FREQUENT_CHECK;
2381
2382 ev_at (w) -= mn_now; 4146 ev_at (w) -= mn_now;
2383 4147
2384 ev_stop (EV_A_ (W)w); 4148 ev_stop (EV_A_ (W)w);
2385}
2386 4149
2387void noinline 4150 EV_FREQUENT_CHECK;
4151}
4152
4153ecb_noinline
4154void
2388ev_timer_again (EV_P_ ev_timer *w) 4155ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
2389{ 4156{
2390 EV_FREQUENT_CHECK; 4157 EV_FREQUENT_CHECK;
4158
4159 clear_pending (EV_A_ (W)w);
2391 4160
2392 if (ev_is_active (w)) 4161 if (ev_is_active (w))
2393 { 4162 {
2394 if (w->repeat) 4163 if (w->repeat)
2395 { 4164 {
… …
2407 } 4176 }
2408 4177
2409 EV_FREQUENT_CHECK; 4178 EV_FREQUENT_CHECK;
2410} 4179}
2411 4180
4181ev_tstamp
4182ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
4183{
4184 return ev_at (w) - (ev_is_active (w) ? mn_now : EV_TS_CONST (0.));
4185}
4186
2412#if EV_PERIODIC_ENABLE 4187#if EV_PERIODIC_ENABLE
2413void noinline 4188ecb_noinline
4189void
2414ev_periodic_start (EV_P_ ev_periodic *w) 4190ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
2415{ 4191{
2416 if (expect_false (ev_is_active (w))) 4192 if (ecb_expect_false (ev_is_active (w)))
2417 return; 4193 return;
2418 4194
2419 if (w->reschedule_cb) 4195 if (w->reschedule_cb)
2420 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4196 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2421 else if (w->interval) 4197 else if (w->interval)
2422 { 4198 {
2423 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 4199 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2424 /* this formula differs from the one in periodic_reify because we do not always round up */ 4200 periodic_recalc (EV_A_ w);
2425 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2426 } 4201 }
2427 else 4202 else
2428 ev_at (w) = w->offset; 4203 ev_at (w) = w->offset;
2429 4204
2430 EV_FREQUENT_CHECK; 4205 EV_FREQUENT_CHECK;
2431 4206
2432 ++periodiccnt; 4207 ++periodiccnt;
2433 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4208 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2434 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4209 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
2435 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4210 ANHE_w (periodics [ev_active (w)]) = (WT)w;
2436 ANHE_at_cache (periodics [ev_active (w)]); 4211 ANHE_at_cache (periodics [ev_active (w)]);
2437 upheap (periodics, ev_active (w)); 4212 upheap (periodics, ev_active (w));
2438 4213
2439 EV_FREQUENT_CHECK; 4214 EV_FREQUENT_CHECK;
2440 4215
2441 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4216 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2442} 4217}
2443 4218
2444void noinline 4219ecb_noinline
4220void
2445ev_periodic_stop (EV_P_ ev_periodic *w) 4221ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
2446{ 4222{
2447 clear_pending (EV_A_ (W)w); 4223 clear_pending (EV_A_ (W)w);
2448 if (expect_false (!ev_is_active (w))) 4224 if (ecb_expect_false (!ev_is_active (w)))
2449 return; 4225 return;
2450 4226
2451 EV_FREQUENT_CHECK; 4227 EV_FREQUENT_CHECK;
2452 4228
2453 { 4229 {
… …
2455 4231
2456 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 4232 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2457 4233
2458 --periodiccnt; 4234 --periodiccnt;
2459 4235
2460 if (expect_true (active < periodiccnt + HEAP0)) 4236 if (ecb_expect_true (active < periodiccnt + HEAP0))
2461 { 4237 {
2462 periodics [active] = periodics [periodiccnt + HEAP0]; 4238 periodics [active] = periodics [periodiccnt + HEAP0];
2463 adjustheap (periodics, periodiccnt, active); 4239 adjustheap (periodics, periodiccnt, active);
2464 } 4240 }
2465 } 4241 }
2466 4242
2467 EV_FREQUENT_CHECK;
2468
2469 ev_stop (EV_A_ (W)w); 4243 ev_stop (EV_A_ (W)w);
2470}
2471 4244
2472void noinline 4245 EV_FREQUENT_CHECK;
4246}
4247
4248ecb_noinline
4249void
2473ev_periodic_again (EV_P_ ev_periodic *w) 4250ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
2474{ 4251{
2475 /* TODO: use adjustheap and recalculation */ 4252 /* TODO: use adjustheap and recalculation */
2476 ev_periodic_stop (EV_A_ w); 4253 ev_periodic_stop (EV_A_ w);
2477 ev_periodic_start (EV_A_ w); 4254 ev_periodic_start (EV_A_ w);
2478} 4255}
… …
2480 4257
2481#ifndef SA_RESTART 4258#ifndef SA_RESTART
2482# define SA_RESTART 0 4259# define SA_RESTART 0
2483#endif 4260#endif
2484 4261
2485void noinline 4262#if EV_SIGNAL_ENABLE
4263
4264ecb_noinline
4265void
2486ev_signal_start (EV_P_ ev_signal *w) 4266ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
2487{ 4267{
4268 if (ecb_expect_false (ev_is_active (w)))
4269 return;
4270
4271 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
4272
2488#if EV_MULTIPLICITY 4273#if EV_MULTIPLICITY
2489 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4274 assert (("libev: a signal must not be attached to two different loops",
2490#endif 4275 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2491 if (expect_false (ev_is_active (w)))
2492 return;
2493 4276
2494 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0)); 4277 signals [w->signum - 1].loop = EV_A;
4278 ECB_MEMORY_FENCE_RELEASE;
4279#endif
2495 4280
2496 evpipe_init (EV_A);
2497
2498 EV_FREQUENT_CHECK; 4281 EV_FREQUENT_CHECK;
2499 4282
4283#if EV_USE_SIGNALFD
4284 if (sigfd == -2)
2500 { 4285 {
2501#ifndef _WIN32 4286 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2502 sigset_t full, prev; 4287 if (sigfd < 0 && errno == EINVAL)
2503 sigfillset (&full); 4288 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2504 sigprocmask (SIG_SETMASK, &full, &prev);
2505#endif
2506 4289
2507 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); 4290 if (sigfd >= 0)
4291 {
4292 fd_intern (sigfd); /* doing it twice will not hurt */
2508 4293
2509#ifndef _WIN32 4294 sigemptyset (&sigfd_set);
2510 sigprocmask (SIG_SETMASK, &prev, 0); 4295
2511#endif 4296 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
4297 ev_set_priority (&sigfd_w, EV_MAXPRI);
4298 ev_io_start (EV_A_ &sigfd_w);
4299 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
4300 }
2512 } 4301 }
4302
4303 if (sigfd >= 0)
4304 {
4305 /* TODO: check .head */
4306 sigaddset (&sigfd_set, w->signum);
4307 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
4308
4309 signalfd (sigfd, &sigfd_set, 0);
4310 }
4311#endif
2513 4312
2514 ev_start (EV_A_ (W)w, 1); 4313 ev_start (EV_A_ (W)w, 1);
2515 wlist_add (&signals [w->signum - 1].head, (WL)w); 4314 wlist_add (&signals [w->signum - 1].head, (WL)w);
2516 4315
2517 if (!((WL)w)->next) 4316 if (!((WL)w)->next)
4317# if EV_USE_SIGNALFD
4318 if (sigfd < 0) /*TODO*/
4319# endif
2518 { 4320 {
2519#if _WIN32 4321# ifdef _WIN32
4322 evpipe_init (EV_A);
4323
2520 signal (w->signum, ev_sighandler); 4324 signal (w->signum, ev_sighandler);
2521#else 4325# else
2522 struct sigaction sa; 4326 struct sigaction sa;
4327
4328 evpipe_init (EV_A);
4329
2523 sa.sa_handler = ev_sighandler; 4330 sa.sa_handler = ev_sighandler;
2524 sigfillset (&sa.sa_mask); 4331 sigfillset (&sa.sa_mask);
2525 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 4332 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2526 sigaction (w->signum, &sa, 0); 4333 sigaction (w->signum, &sa, 0);
4334
4335 if (origflags & EVFLAG_NOSIGMASK)
4336 {
4337 sigemptyset (&sa.sa_mask);
4338 sigaddset (&sa.sa_mask, w->signum);
4339 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
4340 }
2527#endif 4341#endif
2528 } 4342 }
2529 4343
2530 EV_FREQUENT_CHECK; 4344 EV_FREQUENT_CHECK;
2531} 4345}
2532 4346
2533void noinline 4347ecb_noinline
4348void
2534ev_signal_stop (EV_P_ ev_signal *w) 4349ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
2535{ 4350{
2536 clear_pending (EV_A_ (W)w); 4351 clear_pending (EV_A_ (W)w);
2537 if (expect_false (!ev_is_active (w))) 4352 if (ecb_expect_false (!ev_is_active (w)))
2538 return; 4353 return;
2539 4354
2540 EV_FREQUENT_CHECK; 4355 EV_FREQUENT_CHECK;
2541 4356
2542 wlist_del (&signals [w->signum - 1].head, (WL)w); 4357 wlist_del (&signals [w->signum - 1].head, (WL)w);
2543 ev_stop (EV_A_ (W)w); 4358 ev_stop (EV_A_ (W)w);
2544 4359
2545 if (!signals [w->signum - 1].head) 4360 if (!signals [w->signum - 1].head)
4361 {
4362#if EV_MULTIPLICITY
4363 signals [w->signum - 1].loop = 0; /* unattach from signal */
4364#endif
4365#if EV_USE_SIGNALFD
4366 if (sigfd >= 0)
4367 {
4368 sigset_t ss;
4369
4370 sigemptyset (&ss);
4371 sigaddset (&ss, w->signum);
4372 sigdelset (&sigfd_set, w->signum);
4373
4374 signalfd (sigfd, &sigfd_set, 0);
4375 sigprocmask (SIG_UNBLOCK, &ss, 0);
4376 }
4377 else
4378#endif
2546 signal (w->signum, SIG_DFL); 4379 signal (w->signum, SIG_DFL);
4380 }
2547 4381
2548 EV_FREQUENT_CHECK; 4382 EV_FREQUENT_CHECK;
2549} 4383}
2550 4384
4385#endif
4386
4387#if EV_CHILD_ENABLE
4388
2551void 4389void
2552ev_child_start (EV_P_ ev_child *w) 4390ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
2553{ 4391{
2554#if EV_MULTIPLICITY 4392#if EV_MULTIPLICITY
2555 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4393 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2556#endif 4394#endif
2557 if (expect_false (ev_is_active (w))) 4395 if (ecb_expect_false (ev_is_active (w)))
2558 return; 4396 return;
2559 4397
2560 EV_FREQUENT_CHECK; 4398 EV_FREQUENT_CHECK;
2561 4399
2562 ev_start (EV_A_ (W)w, 1); 4400 ev_start (EV_A_ (W)w, 1);
2563 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4401 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2564 4402
2565 EV_FREQUENT_CHECK; 4403 EV_FREQUENT_CHECK;
2566} 4404}
2567 4405
2568void 4406void
2569ev_child_stop (EV_P_ ev_child *w) 4407ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
2570{ 4408{
2571 clear_pending (EV_A_ (W)w); 4409 clear_pending (EV_A_ (W)w);
2572 if (expect_false (!ev_is_active (w))) 4410 if (ecb_expect_false (!ev_is_active (w)))
2573 return; 4411 return;
2574 4412
2575 EV_FREQUENT_CHECK; 4413 EV_FREQUENT_CHECK;
2576 4414
2577 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4415 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2578 ev_stop (EV_A_ (W)w); 4416 ev_stop (EV_A_ (W)w);
2579 4417
2580 EV_FREQUENT_CHECK; 4418 EV_FREQUENT_CHECK;
2581} 4419}
4420
4421#endif
2582 4422
2583#if EV_STAT_ENABLE 4423#if EV_STAT_ENABLE
2584 4424
2585# ifdef _WIN32 4425# ifdef _WIN32
2586# undef lstat 4426# undef lstat
… …
2589 4429
2590#define DEF_STAT_INTERVAL 5.0074891 4430#define DEF_STAT_INTERVAL 5.0074891
2591#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4431#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2592#define MIN_STAT_INTERVAL 0.1074891 4432#define MIN_STAT_INTERVAL 0.1074891
2593 4433
2594static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4434ecb_noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2595 4435
2596#if EV_USE_INOTIFY 4436#if EV_USE_INOTIFY
2597# define EV_INOTIFY_BUFSIZE 8192
2598 4437
2599static void noinline 4438/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
4439# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
4440
4441ecb_noinline
4442static void
2600infy_add (EV_P_ ev_stat *w) 4443infy_add (EV_P_ ev_stat *w)
2601{ 4444{
2602 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); 4445 w->wd = inotify_add_watch (fs_fd, w->path,
4446 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4447 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4448 | IN_DONT_FOLLOW | IN_MASK_ADD);
2603 4449
2604 if (w->wd < 0) 4450 if (w->wd >= 0)
4451 {
4452 struct statfs sfs;
4453
4454 /* now local changes will be tracked by inotify, but remote changes won't */
4455 /* unless the filesystem is known to be local, we therefore still poll */
4456 /* also do poll on <2.6.25, but with normal frequency */
4457
4458 if (!fs_2625)
4459 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
4460 else if (!statfs (w->path, &sfs)
4461 && (sfs.f_type == 0x1373 /* devfs */
4462 || sfs.f_type == 0x4006 /* fat */
4463 || sfs.f_type == 0x4d44 /* msdos */
4464 || sfs.f_type == 0xEF53 /* ext2/3 */
4465 || sfs.f_type == 0x72b6 /* jffs2 */
4466 || sfs.f_type == 0x858458f6 /* ramfs */
4467 || sfs.f_type == 0x5346544e /* ntfs */
4468 || sfs.f_type == 0x3153464a /* jfs */
4469 || sfs.f_type == 0x9123683e /* btrfs */
4470 || sfs.f_type == 0x52654973 /* reiser3 */
4471 || sfs.f_type == 0x01021994 /* tmpfs */
4472 || sfs.f_type == 0x58465342 /* xfs */))
4473 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
4474 else
4475 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2605 { 4476 }
4477 else
4478 {
4479 /* can't use inotify, continue to stat */
2606 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4480 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2607 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2608 4481
2609 /* monitor some parent directory for speedup hints */ 4482 /* if path is not there, monitor some parent directory for speedup hints */
2610 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 4483 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2611 /* but an efficiency issue only */ 4484 /* but an efficiency issue only */
2612 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 4485 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2613 { 4486 {
2614 char path [4096]; 4487 char path [4096];
… …
2624 if (!pend || pend == path) 4497 if (!pend || pend == path)
2625 break; 4498 break;
2626 4499
2627 *pend = 0; 4500 *pend = 0;
2628 w->wd = inotify_add_watch (fs_fd, path, mask); 4501 w->wd = inotify_add_watch (fs_fd, path, mask);
2629 } 4502 }
2630 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 4503 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2631 } 4504 }
2632 } 4505 }
2633 4506
2634 if (w->wd >= 0) 4507 if (w->wd >= 0)
2635 {
2636 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4508 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2637 4509
2638 /* now local changes will be tracked by inotify, but remote changes won't */ 4510 /* now re-arm timer, if required */
2639 /* unless the filesystem it known to be local, we therefore still poll */ 4511 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2640 /* also do poll on <2.6.25, but with normal frequency */
2641 struct statfs sfs;
2642
2643 if (fs_2625 && !statfs (w->path, &sfs))
2644 if (sfs.f_type == 0x1373 /* devfs */
2645 || sfs.f_type == 0xEF53 /* ext2/3 */
2646 || sfs.f_type == 0x3153464a /* jfs */
2647 || sfs.f_type == 0x52654973 /* reiser3 */
2648 || sfs.f_type == 0x01021994 /* tempfs */
2649 || sfs.f_type == 0x58465342 /* xfs */)
2650 return;
2651
2652 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2653 ev_timer_again (EV_A_ &w->timer); 4512 ev_timer_again (EV_A_ &w->timer);
2654 } 4513 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2655} 4514}
2656 4515
2657static void noinline 4516ecb_noinline
4517static void
2658infy_del (EV_P_ ev_stat *w) 4518infy_del (EV_P_ ev_stat *w)
2659{ 4519{
2660 int slot; 4520 int slot;
2661 int wd = w->wd; 4521 int wd = w->wd;
2662 4522
2663 if (wd < 0) 4523 if (wd < 0)
2664 return; 4524 return;
2665 4525
2666 w->wd = -2; 4526 w->wd = -2;
2667 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 4527 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2668 wlist_del (&fs_hash [slot].head, (WL)w); 4528 wlist_del (&fs_hash [slot].head, (WL)w);
2669 4529
2670 /* remove this watcher, if others are watching it, they will rearm */ 4530 /* remove this watcher, if others are watching it, they will rearm */
2671 inotify_rm_watch (fs_fd, wd); 4531 inotify_rm_watch (fs_fd, wd);
2672} 4532}
2673 4533
2674static void noinline 4534ecb_noinline
4535static void
2675infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4536infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2676{ 4537{
2677 if (slot < 0) 4538 if (slot < 0)
2678 /* overflow, need to check for all hash slots */ 4539 /* overflow, need to check for all hash slots */
2679 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4540 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2680 infy_wd (EV_A_ slot, wd, ev); 4541 infy_wd (EV_A_ slot, wd, ev);
2681 else 4542 else
2682 { 4543 {
2683 WL w_; 4544 WL w_;
2684 4545
2685 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 4546 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2686 { 4547 {
2687 ev_stat *w = (ev_stat *)w_; 4548 ev_stat *w = (ev_stat *)w_;
2688 w_ = w_->next; /* lets us remove this watcher and all before it */ 4549 w_ = w_->next; /* lets us remove this watcher and all before it */
2689 4550
2690 if (w->wd == wd || wd == -1) 4551 if (w->wd == wd || wd == -1)
2691 { 4552 {
2692 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 4553 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2693 { 4554 {
2694 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4555 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2695 w->wd = -1; 4556 w->wd = -1;
2696 infy_add (EV_A_ w); /* re-add, no matter what */ 4557 infy_add (EV_A_ w); /* re-add, no matter what */
2697 } 4558 }
2698 4559
2699 stat_timer_cb (EV_A_ &w->timer, 0); 4560 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2704 4565
2705static void 4566static void
2706infy_cb (EV_P_ ev_io *w, int revents) 4567infy_cb (EV_P_ ev_io *w, int revents)
2707{ 4568{
2708 char buf [EV_INOTIFY_BUFSIZE]; 4569 char buf [EV_INOTIFY_BUFSIZE];
2709 struct inotify_event *ev = (struct inotify_event *)buf;
2710 int ofs; 4570 int ofs;
2711 int len = read (fs_fd, buf, sizeof (buf)); 4571 int len = read (fs_fd, buf, sizeof (buf));
2712 4572
2713 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 4573 for (ofs = 0; ofs < len; )
4574 {
4575 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2714 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4576 infy_wd (EV_A_ ev->wd, ev->wd, ev);
4577 ofs += sizeof (struct inotify_event) + ev->len;
4578 }
2715} 4579}
2716 4580
2717inline_size void 4581inline_size ecb_cold
4582void
2718check_2625 (EV_P) 4583ev_check_2625 (EV_P)
2719{ 4584{
2720 /* kernels < 2.6.25 are borked 4585 /* kernels < 2.6.25 are borked
2721 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4586 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2722 */ 4587 */
2723 struct utsname buf; 4588 if (ev_linux_version () < 0x020619)
2724 int major, minor, micro;
2725
2726 if (uname (&buf))
2727 return; 4589 return;
2728 4590
2729 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2730 return;
2731
2732 if (major < 2
2733 || (major == 2 && minor < 6)
2734 || (major == 2 && minor == 6 && micro < 25))
2735 return;
2736
2737 fs_2625 = 1; 4591 fs_2625 = 1;
4592}
4593
4594inline_size int
4595infy_newfd (void)
4596{
4597#if defined IN_CLOEXEC && defined IN_NONBLOCK
4598 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
4599 if (fd >= 0)
4600 return fd;
4601#endif
4602 return inotify_init ();
2738} 4603}
2739 4604
2740inline_size void 4605inline_size void
2741infy_init (EV_P) 4606infy_init (EV_P)
2742{ 4607{
2743 if (fs_fd != -2) 4608 if (fs_fd != -2)
2744 return; 4609 return;
2745 4610
2746 fs_fd = -1; 4611 fs_fd = -1;
2747 4612
2748 check_2625 (EV_A); 4613 ev_check_2625 (EV_A);
2749 4614
2750 fs_fd = inotify_init (); 4615 fs_fd = infy_newfd ();
2751 4616
2752 if (fs_fd >= 0) 4617 if (fs_fd >= 0)
2753 { 4618 {
4619 fd_intern (fs_fd);
2754 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 4620 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2755 ev_set_priority (&fs_w, EV_MAXPRI); 4621 ev_set_priority (&fs_w, EV_MAXPRI);
2756 ev_io_start (EV_A_ &fs_w); 4622 ev_io_start (EV_A_ &fs_w);
4623 ev_unref (EV_A);
2757 } 4624 }
2758} 4625}
2759 4626
2760inline_size void 4627inline_size void
2761infy_fork (EV_P) 4628infy_fork (EV_P)
… …
2763 int slot; 4630 int slot;
2764 4631
2765 if (fs_fd < 0) 4632 if (fs_fd < 0)
2766 return; 4633 return;
2767 4634
4635 ev_ref (EV_A);
4636 ev_io_stop (EV_A_ &fs_w);
2768 close (fs_fd); 4637 close (fs_fd);
2769 fs_fd = inotify_init (); 4638 fs_fd = infy_newfd ();
2770 4639
4640 if (fs_fd >= 0)
4641 {
4642 fd_intern (fs_fd);
4643 ev_io_set (&fs_w, fs_fd, EV_READ);
4644 ev_io_start (EV_A_ &fs_w);
4645 ev_unref (EV_A);
4646 }
4647
2771 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4648 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2772 { 4649 {
2773 WL w_ = fs_hash [slot].head; 4650 WL w_ = fs_hash [slot].head;
2774 fs_hash [slot].head = 0; 4651 fs_hash [slot].head = 0;
2775 4652
2776 while (w_) 4653 while (w_)
… …
2781 w->wd = -1; 4658 w->wd = -1;
2782 4659
2783 if (fs_fd >= 0) 4660 if (fs_fd >= 0)
2784 infy_add (EV_A_ w); /* re-add, no matter what */ 4661 infy_add (EV_A_ w); /* re-add, no matter what */
2785 else 4662 else
4663 {
4664 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
4665 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2786 ev_timer_again (EV_A_ &w->timer); 4666 ev_timer_again (EV_A_ &w->timer);
4667 if (ev_is_active (&w->timer)) ev_unref (EV_A);
4668 }
2787 } 4669 }
2788 } 4670 }
2789} 4671}
2790 4672
2791#endif 4673#endif
… …
2795#else 4677#else
2796# define EV_LSTAT(p,b) lstat (p, b) 4678# define EV_LSTAT(p,b) lstat (p, b)
2797#endif 4679#endif
2798 4680
2799void 4681void
2800ev_stat_stat (EV_P_ ev_stat *w) 4682ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
2801{ 4683{
2802 if (lstat (w->path, &w->attr) < 0) 4684 if (lstat (w->path, &w->attr) < 0)
2803 w->attr.st_nlink = 0; 4685 w->attr.st_nlink = 0;
2804 else if (!w->attr.st_nlink) 4686 else if (!w->attr.st_nlink)
2805 w->attr.st_nlink = 1; 4687 w->attr.st_nlink = 1;
2806} 4688}
2807 4689
2808static void noinline 4690ecb_noinline
4691static void
2809stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4692stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2810{ 4693{
2811 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4694 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2812 4695
2813 /* we copy this here each the time so that */ 4696 ev_statdata prev = w->attr;
2814 /* prev has the old value when the callback gets invoked */
2815 w->prev = w->attr;
2816 ev_stat_stat (EV_A_ w); 4697 ev_stat_stat (EV_A_ w);
2817 4698
2818 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 4699 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2819 if ( 4700 if (
2820 w->prev.st_dev != w->attr.st_dev 4701 prev.st_dev != w->attr.st_dev
2821 || w->prev.st_ino != w->attr.st_ino 4702 || prev.st_ino != w->attr.st_ino
2822 || w->prev.st_mode != w->attr.st_mode 4703 || prev.st_mode != w->attr.st_mode
2823 || w->prev.st_nlink != w->attr.st_nlink 4704 || prev.st_nlink != w->attr.st_nlink
2824 || w->prev.st_uid != w->attr.st_uid 4705 || prev.st_uid != w->attr.st_uid
2825 || w->prev.st_gid != w->attr.st_gid 4706 || prev.st_gid != w->attr.st_gid
2826 || w->prev.st_rdev != w->attr.st_rdev 4707 || prev.st_rdev != w->attr.st_rdev
2827 || w->prev.st_size != w->attr.st_size 4708 || prev.st_size != w->attr.st_size
2828 || w->prev.st_atime != w->attr.st_atime 4709 || prev.st_atime != w->attr.st_atime
2829 || w->prev.st_mtime != w->attr.st_mtime 4710 || prev.st_mtime != w->attr.st_mtime
2830 || w->prev.st_ctime != w->attr.st_ctime 4711 || prev.st_ctime != w->attr.st_ctime
2831 ) { 4712 ) {
4713 /* we only update w->prev on actual differences */
4714 /* in case we test more often than invoke the callback, */
4715 /* to ensure that prev is always different to attr */
4716 w->prev = prev;
4717
2832 #if EV_USE_INOTIFY 4718 #if EV_USE_INOTIFY
2833 if (fs_fd >= 0) 4719 if (fs_fd >= 0)
2834 { 4720 {
2835 infy_del (EV_A_ w); 4721 infy_del (EV_A_ w);
2836 infy_add (EV_A_ w); 4722 infy_add (EV_A_ w);
… …
2841 ev_feed_event (EV_A_ w, EV_STAT); 4727 ev_feed_event (EV_A_ w, EV_STAT);
2842 } 4728 }
2843} 4729}
2844 4730
2845void 4731void
2846ev_stat_start (EV_P_ ev_stat *w) 4732ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
2847{ 4733{
2848 if (expect_false (ev_is_active (w))) 4734 if (ecb_expect_false (ev_is_active (w)))
2849 return; 4735 return;
2850 4736
2851 ev_stat_stat (EV_A_ w); 4737 ev_stat_stat (EV_A_ w);
2852 4738
2853 if (w->interval < MIN_STAT_INTERVAL && w->interval) 4739 if (w->interval < MIN_STAT_INTERVAL && w->interval)
… …
2861 4747
2862 if (fs_fd >= 0) 4748 if (fs_fd >= 0)
2863 infy_add (EV_A_ w); 4749 infy_add (EV_A_ w);
2864 else 4750 else
2865#endif 4751#endif
4752 {
2866 ev_timer_again (EV_A_ &w->timer); 4753 ev_timer_again (EV_A_ &w->timer);
4754 ev_unref (EV_A);
4755 }
2867 4756
2868 ev_start (EV_A_ (W)w, 1); 4757 ev_start (EV_A_ (W)w, 1);
2869 4758
2870 EV_FREQUENT_CHECK; 4759 EV_FREQUENT_CHECK;
2871} 4760}
2872 4761
2873void 4762void
2874ev_stat_stop (EV_P_ ev_stat *w) 4763ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
2875{ 4764{
2876 clear_pending (EV_A_ (W)w); 4765 clear_pending (EV_A_ (W)w);
2877 if (expect_false (!ev_is_active (w))) 4766 if (ecb_expect_false (!ev_is_active (w)))
2878 return; 4767 return;
2879 4768
2880 EV_FREQUENT_CHECK; 4769 EV_FREQUENT_CHECK;
2881 4770
2882#if EV_USE_INOTIFY 4771#if EV_USE_INOTIFY
2883 infy_del (EV_A_ w); 4772 infy_del (EV_A_ w);
2884#endif 4773#endif
4774
4775 if (ev_is_active (&w->timer))
4776 {
4777 ev_ref (EV_A);
2885 ev_timer_stop (EV_A_ &w->timer); 4778 ev_timer_stop (EV_A_ &w->timer);
4779 }
2886 4780
2887 ev_stop (EV_A_ (W)w); 4781 ev_stop (EV_A_ (W)w);
2888 4782
2889 EV_FREQUENT_CHECK; 4783 EV_FREQUENT_CHECK;
2890} 4784}
2891#endif 4785#endif
2892 4786
2893#if EV_IDLE_ENABLE 4787#if EV_IDLE_ENABLE
2894void 4788void
2895ev_idle_start (EV_P_ ev_idle *w) 4789ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
2896{ 4790{
2897 if (expect_false (ev_is_active (w))) 4791 if (ecb_expect_false (ev_is_active (w)))
2898 return; 4792 return;
2899 4793
2900 pri_adjust (EV_A_ (W)w); 4794 pri_adjust (EV_A_ (W)w);
2901 4795
2902 EV_FREQUENT_CHECK; 4796 EV_FREQUENT_CHECK;
… …
2905 int active = ++idlecnt [ABSPRI (w)]; 4799 int active = ++idlecnt [ABSPRI (w)];
2906 4800
2907 ++idleall; 4801 ++idleall;
2908 ev_start (EV_A_ (W)w, active); 4802 ev_start (EV_A_ (W)w, active);
2909 4803
2910 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 4804 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
2911 idles [ABSPRI (w)][active - 1] = w; 4805 idles [ABSPRI (w)][active - 1] = w;
2912 } 4806 }
2913 4807
2914 EV_FREQUENT_CHECK; 4808 EV_FREQUENT_CHECK;
2915} 4809}
2916 4810
2917void 4811void
2918ev_idle_stop (EV_P_ ev_idle *w) 4812ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
2919{ 4813{
2920 clear_pending (EV_A_ (W)w); 4814 clear_pending (EV_A_ (W)w);
2921 if (expect_false (!ev_is_active (w))) 4815 if (ecb_expect_false (!ev_is_active (w)))
2922 return; 4816 return;
2923 4817
2924 EV_FREQUENT_CHECK; 4818 EV_FREQUENT_CHECK;
2925 4819
2926 { 4820 {
… …
2935 4829
2936 EV_FREQUENT_CHECK; 4830 EV_FREQUENT_CHECK;
2937} 4831}
2938#endif 4832#endif
2939 4833
4834#if EV_PREPARE_ENABLE
2940void 4835void
2941ev_prepare_start (EV_P_ ev_prepare *w) 4836ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
2942{ 4837{
2943 if (expect_false (ev_is_active (w))) 4838 if (ecb_expect_false (ev_is_active (w)))
2944 return; 4839 return;
2945 4840
2946 EV_FREQUENT_CHECK; 4841 EV_FREQUENT_CHECK;
2947 4842
2948 ev_start (EV_A_ (W)w, ++preparecnt); 4843 ev_start (EV_A_ (W)w, ++preparecnt);
2949 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4844 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
2950 prepares [preparecnt - 1] = w; 4845 prepares [preparecnt - 1] = w;
2951 4846
2952 EV_FREQUENT_CHECK; 4847 EV_FREQUENT_CHECK;
2953} 4848}
2954 4849
2955void 4850void
2956ev_prepare_stop (EV_P_ ev_prepare *w) 4851ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
2957{ 4852{
2958 clear_pending (EV_A_ (W)w); 4853 clear_pending (EV_A_ (W)w);
2959 if (expect_false (!ev_is_active (w))) 4854 if (ecb_expect_false (!ev_is_active (w)))
2960 return; 4855 return;
2961 4856
2962 EV_FREQUENT_CHECK; 4857 EV_FREQUENT_CHECK;
2963 4858
2964 { 4859 {
… …
2970 4865
2971 ev_stop (EV_A_ (W)w); 4866 ev_stop (EV_A_ (W)w);
2972 4867
2973 EV_FREQUENT_CHECK; 4868 EV_FREQUENT_CHECK;
2974} 4869}
4870#endif
2975 4871
4872#if EV_CHECK_ENABLE
2976void 4873void
2977ev_check_start (EV_P_ ev_check *w) 4874ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
2978{ 4875{
2979 if (expect_false (ev_is_active (w))) 4876 if (ecb_expect_false (ev_is_active (w)))
2980 return; 4877 return;
2981 4878
2982 EV_FREQUENT_CHECK; 4879 EV_FREQUENT_CHECK;
2983 4880
2984 ev_start (EV_A_ (W)w, ++checkcnt); 4881 ev_start (EV_A_ (W)w, ++checkcnt);
2985 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 4882 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
2986 checks [checkcnt - 1] = w; 4883 checks [checkcnt - 1] = w;
2987 4884
2988 EV_FREQUENT_CHECK; 4885 EV_FREQUENT_CHECK;
2989} 4886}
2990 4887
2991void 4888void
2992ev_check_stop (EV_P_ ev_check *w) 4889ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
2993{ 4890{
2994 clear_pending (EV_A_ (W)w); 4891 clear_pending (EV_A_ (W)w);
2995 if (expect_false (!ev_is_active (w))) 4892 if (ecb_expect_false (!ev_is_active (w)))
2996 return; 4893 return;
2997 4894
2998 EV_FREQUENT_CHECK; 4895 EV_FREQUENT_CHECK;
2999 4896
3000 { 4897 {
… …
3006 4903
3007 ev_stop (EV_A_ (W)w); 4904 ev_stop (EV_A_ (W)w);
3008 4905
3009 EV_FREQUENT_CHECK; 4906 EV_FREQUENT_CHECK;
3010} 4907}
4908#endif
3011 4909
3012#if EV_EMBED_ENABLE 4910#if EV_EMBED_ENABLE
3013void noinline 4911ecb_noinline
4912void
3014ev_embed_sweep (EV_P_ ev_embed *w) 4913ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
3015{ 4914{
3016 ev_loop (w->other, EVLOOP_NONBLOCK); 4915 ev_run (w->other, EVRUN_NOWAIT);
3017} 4916}
3018 4917
3019static void 4918static void
3020embed_io_cb (EV_P_ ev_io *io, int revents) 4919embed_io_cb (EV_P_ ev_io *io, int revents)
3021{ 4920{
3022 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4921 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3023 4922
3024 if (ev_cb (w)) 4923 if (ev_cb (w))
3025 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4924 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3026 else 4925 else
3027 ev_loop (w->other, EVLOOP_NONBLOCK); 4926 ev_run (w->other, EVRUN_NOWAIT);
3028} 4927}
3029 4928
3030static void 4929static void
3031embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4930embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3032{ 4931{
3033 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 4932 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
3034 4933
3035 { 4934 {
3036 struct ev_loop *loop = w->other; 4935 EV_P = w->other;
3037 4936
3038 while (fdchangecnt) 4937 while (fdchangecnt)
3039 { 4938 {
3040 fd_reify (EV_A); 4939 fd_reify (EV_A);
3041 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4940 ev_run (EV_A_ EVRUN_NOWAIT);
3042 } 4941 }
3043 } 4942 }
3044} 4943}
3045 4944
3046static void 4945static void
… …
3049 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 4948 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3050 4949
3051 ev_embed_stop (EV_A_ w); 4950 ev_embed_stop (EV_A_ w);
3052 4951
3053 { 4952 {
3054 struct ev_loop *loop = w->other; 4953 EV_P = w->other;
3055 4954
3056 ev_loop_fork (EV_A); 4955 ev_loop_fork (EV_A);
3057 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4956 ev_run (EV_A_ EVRUN_NOWAIT);
3058 } 4957 }
3059 4958
3060 ev_embed_start (EV_A_ w); 4959 ev_embed_start (EV_A_ w);
3061} 4960}
3062 4961
… …
3067 ev_idle_stop (EV_A_ idle); 4966 ev_idle_stop (EV_A_ idle);
3068} 4967}
3069#endif 4968#endif
3070 4969
3071void 4970void
3072ev_embed_start (EV_P_ ev_embed *w) 4971ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
3073{ 4972{
3074 if (expect_false (ev_is_active (w))) 4973 if (ecb_expect_false (ev_is_active (w)))
3075 return; 4974 return;
3076 4975
3077 { 4976 {
3078 struct ev_loop *loop = w->other; 4977 EV_P = w->other;
3079 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4978 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
3080 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 4979 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3081 } 4980 }
3082 4981
3083 EV_FREQUENT_CHECK; 4982 EV_FREQUENT_CHECK;
… …
3098 4997
3099 EV_FREQUENT_CHECK; 4998 EV_FREQUENT_CHECK;
3100} 4999}
3101 5000
3102void 5001void
3103ev_embed_stop (EV_P_ ev_embed *w) 5002ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
3104{ 5003{
3105 clear_pending (EV_A_ (W)w); 5004 clear_pending (EV_A_ (W)w);
3106 if (expect_false (!ev_is_active (w))) 5005 if (ecb_expect_false (!ev_is_active (w)))
3107 return; 5006 return;
3108 5007
3109 EV_FREQUENT_CHECK; 5008 EV_FREQUENT_CHECK;
3110 5009
3111 ev_io_stop (EV_A_ &w->io); 5010 ev_io_stop (EV_A_ &w->io);
3112 ev_prepare_stop (EV_A_ &w->prepare); 5011 ev_prepare_stop (EV_A_ &w->prepare);
3113 ev_fork_stop (EV_A_ &w->fork); 5012 ev_fork_stop (EV_A_ &w->fork);
3114 5013
5014 ev_stop (EV_A_ (W)w);
5015
3115 EV_FREQUENT_CHECK; 5016 EV_FREQUENT_CHECK;
3116} 5017}
3117#endif 5018#endif
3118 5019
3119#if EV_FORK_ENABLE 5020#if EV_FORK_ENABLE
3120void 5021void
3121ev_fork_start (EV_P_ ev_fork *w) 5022ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
3122{ 5023{
3123 if (expect_false (ev_is_active (w))) 5024 if (ecb_expect_false (ev_is_active (w)))
3124 return; 5025 return;
3125 5026
3126 EV_FREQUENT_CHECK; 5027 EV_FREQUENT_CHECK;
3127 5028
3128 ev_start (EV_A_ (W)w, ++forkcnt); 5029 ev_start (EV_A_ (W)w, ++forkcnt);
3129 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 5030 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
3130 forks [forkcnt - 1] = w; 5031 forks [forkcnt - 1] = w;
3131 5032
3132 EV_FREQUENT_CHECK; 5033 EV_FREQUENT_CHECK;
3133} 5034}
3134 5035
3135void 5036void
3136ev_fork_stop (EV_P_ ev_fork *w) 5037ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
3137{ 5038{
3138 clear_pending (EV_A_ (W)w); 5039 clear_pending (EV_A_ (W)w);
3139 if (expect_false (!ev_is_active (w))) 5040 if (ecb_expect_false (!ev_is_active (w)))
3140 return; 5041 return;
3141 5042
3142 EV_FREQUENT_CHECK; 5043 EV_FREQUENT_CHECK;
3143 5044
3144 { 5045 {
… …
3152 5053
3153 EV_FREQUENT_CHECK; 5054 EV_FREQUENT_CHECK;
3154} 5055}
3155#endif 5056#endif
3156 5057
5058#if EV_CLEANUP_ENABLE
5059void
5060ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
5061{
5062 if (ecb_expect_false (ev_is_active (w)))
5063 return;
5064
5065 EV_FREQUENT_CHECK;
5066
5067 ev_start (EV_A_ (W)w, ++cleanupcnt);
5068 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
5069 cleanups [cleanupcnt - 1] = w;
5070
5071 /* cleanup watchers should never keep a refcount on the loop */
5072 ev_unref (EV_A);
5073 EV_FREQUENT_CHECK;
5074}
5075
5076void
5077ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
5078{
5079 clear_pending (EV_A_ (W)w);
5080 if (ecb_expect_false (!ev_is_active (w)))
5081 return;
5082
5083 EV_FREQUENT_CHECK;
5084 ev_ref (EV_A);
5085
5086 {
5087 int active = ev_active (w);
5088
5089 cleanups [active - 1] = cleanups [--cleanupcnt];
5090 ev_active (cleanups [active - 1]) = active;
5091 }
5092
5093 ev_stop (EV_A_ (W)w);
5094
5095 EV_FREQUENT_CHECK;
5096}
5097#endif
5098
3157#if EV_ASYNC_ENABLE 5099#if EV_ASYNC_ENABLE
3158void 5100void
3159ev_async_start (EV_P_ ev_async *w) 5101ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
3160{ 5102{
3161 if (expect_false (ev_is_active (w))) 5103 if (ecb_expect_false (ev_is_active (w)))
3162 return; 5104 return;
3163 5105
5106 w->sent = 0;
5107
3164 evpipe_init (EV_A); 5108 evpipe_init (EV_A);
3165 5109
3166 EV_FREQUENT_CHECK; 5110 EV_FREQUENT_CHECK;
3167 5111
3168 ev_start (EV_A_ (W)w, ++asynccnt); 5112 ev_start (EV_A_ (W)w, ++asynccnt);
3169 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 5113 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
3170 asyncs [asynccnt - 1] = w; 5114 asyncs [asynccnt - 1] = w;
3171 5115
3172 EV_FREQUENT_CHECK; 5116 EV_FREQUENT_CHECK;
3173} 5117}
3174 5118
3175void 5119void
3176ev_async_stop (EV_P_ ev_async *w) 5120ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
3177{ 5121{
3178 clear_pending (EV_A_ (W)w); 5122 clear_pending (EV_A_ (W)w);
3179 if (expect_false (!ev_is_active (w))) 5123 if (ecb_expect_false (!ev_is_active (w)))
3180 return; 5124 return;
3181 5125
3182 EV_FREQUENT_CHECK; 5126 EV_FREQUENT_CHECK;
3183 5127
3184 { 5128 {
… …
3192 5136
3193 EV_FREQUENT_CHECK; 5137 EV_FREQUENT_CHECK;
3194} 5138}
3195 5139
3196void 5140void
3197ev_async_send (EV_P_ ev_async *w) 5141ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
3198{ 5142{
3199 w->sent = 1; 5143 w->sent = 1;
3200 evpipe_write (EV_A_ &gotasync); 5144 evpipe_write (EV_A_ &async_pending);
3201} 5145}
3202#endif 5146#endif
3203 5147
3204/*****************************************************************************/ 5148/*****************************************************************************/
3205 5149
… …
3239 5183
3240 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5184 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3241} 5185}
3242 5186
3243void 5187void
3244ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 5188ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
3245{ 5189{
3246 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5190 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3247
3248 if (expect_false (!once))
3249 {
3250 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
3251 return;
3252 }
3253 5191
3254 once->cb = cb; 5192 once->cb = cb;
3255 once->arg = arg; 5193 once->arg = arg;
3256 5194
3257 ev_init (&once->io, once_cb_io); 5195 ev_init (&once->io, once_cb_io);
… …
3270} 5208}
3271 5209
3272/*****************************************************************************/ 5210/*****************************************************************************/
3273 5211
3274#if EV_WALK_ENABLE 5212#if EV_WALK_ENABLE
5213ecb_cold
3275void 5214void
3276ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 5215ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
3277{ 5216{
3278 int i, j; 5217 int i, j;
3279 ev_watcher_list *wl, *wn; 5218 ev_watcher_list *wl, *wn;
3280 5219
3281 if (types & (EV_IO | EV_EMBED)) 5220 if (types & (EV_IO | EV_EMBED))
… …
3324 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 5263 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3325#endif 5264#endif
3326 5265
3327#if EV_IDLE_ENABLE 5266#if EV_IDLE_ENABLE
3328 if (types & EV_IDLE) 5267 if (types & EV_IDLE)
3329 for (j = NUMPRI; i--; ) 5268 for (j = NUMPRI; j--; )
3330 for (i = idlecnt [j]; i--; ) 5269 for (i = idlecnt [j]; i--; )
3331 cb (EV_A_ EV_IDLE, idles [j][i]); 5270 cb (EV_A_ EV_IDLE, idles [j][i]);
3332#endif 5271#endif
3333 5272
3334#if EV_FORK_ENABLE 5273#if EV_FORK_ENABLE
… …
3342 if (types & EV_ASYNC) 5281 if (types & EV_ASYNC)
3343 for (i = asynccnt; i--; ) 5282 for (i = asynccnt; i--; )
3344 cb (EV_A_ EV_ASYNC, asyncs [i]); 5283 cb (EV_A_ EV_ASYNC, asyncs [i]);
3345#endif 5284#endif
3346 5285
5286#if EV_PREPARE_ENABLE
3347 if (types & EV_PREPARE) 5287 if (types & EV_PREPARE)
3348 for (i = preparecnt; i--; ) 5288 for (i = preparecnt; i--; )
3349#if EV_EMBED_ENABLE 5289# if EV_EMBED_ENABLE
3350 if (ev_cb (prepares [i]) != embed_prepare_cb) 5290 if (ev_cb (prepares [i]) != embed_prepare_cb)
3351#endif 5291# endif
3352 cb (EV_A_ EV_PREPARE, prepares [i]); 5292 cb (EV_A_ EV_PREPARE, prepares [i]);
5293#endif
3353 5294
5295#if EV_CHECK_ENABLE
3354 if (types & EV_CHECK) 5296 if (types & EV_CHECK)
3355 for (i = checkcnt; i--; ) 5297 for (i = checkcnt; i--; )
3356 cb (EV_A_ EV_CHECK, checks [i]); 5298 cb (EV_A_ EV_CHECK, checks [i]);
5299#endif
3357 5300
5301#if EV_SIGNAL_ENABLE
3358 if (types & EV_SIGNAL) 5302 if (types & EV_SIGNAL)
3359 for (i = 0; i < signalmax; ++i) 5303 for (i = 0; i < EV_NSIG - 1; ++i)
3360 for (wl = signals [i].head; wl; ) 5304 for (wl = signals [i].head; wl; )
3361 { 5305 {
3362 wn = wl->next; 5306 wn = wl->next;
3363 cb (EV_A_ EV_SIGNAL, wl); 5307 cb (EV_A_ EV_SIGNAL, wl);
3364 wl = wn; 5308 wl = wn;
3365 } 5309 }
5310#endif
3366 5311
5312#if EV_CHILD_ENABLE
3367 if (types & EV_CHILD) 5313 if (types & EV_CHILD)
3368 for (i = EV_PID_HASHSIZE; i--; ) 5314 for (i = (EV_PID_HASHSIZE); i--; )
3369 for (wl = childs [i]; wl; ) 5315 for (wl = childs [i]; wl; )
3370 { 5316 {
3371 wn = wl->next; 5317 wn = wl->next;
3372 cb (EV_A_ EV_CHILD, wl); 5318 cb (EV_A_ EV_CHILD, wl);
3373 wl = wn; 5319 wl = wn;
3374 } 5320 }
5321#endif
3375/* EV_STAT 0x00001000 /* stat data changed */ 5322/* EV_STAT 0x00001000 /* stat data changed */
3376/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 5323/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3377} 5324}
3378#endif 5325#endif
3379 5326
3380#if EV_MULTIPLICITY 5327#if EV_MULTIPLICITY
3381 #include "ev_wrap.h" 5328 #include "ev_wrap.h"
3382#endif 5329#endif
3383 5330
3384#ifdef __cplusplus
3385}
3386#endif
3387

Diff Legend

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