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Comparing libev/ev.c (file contents):
Revision 1.297 by root, Fri Jul 10 00:36:21 2009 UTC vs.
Revision 1.506 by root, Thu Jul 11 05:41:39 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#define EV_TS_TO_MS(a) a * 1e3 + 0.9999
550#define EV_TS_FROM_US(us) us * 1e-6
551#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
552#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
553#define EV_TV_GET(tv) ((tv).tv_sec + (tv).tv_usec * 1e-6)
554#define EV_TS_GET(ts) ((ts).tv_sec + (ts).tv_nsec * 1e-9)
555
556/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
557/* ECB.H BEGIN */
558/*
559 * libecb - http://software.schmorp.de/pkg/libecb
560 *
561 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
562 * Copyright (©) 2011 Emanuele Giaquinta
563 * All rights reserved.
564 *
565 * Redistribution and use in source and binary forms, with or without modifica-
566 * tion, are permitted provided that the following conditions are met:
567 *
568 * 1. Redistributions of source code must retain the above copyright notice,
569 * this list of conditions and the following disclaimer.
570 *
571 * 2. Redistributions in binary form must reproduce the above copyright
572 * notice, this list of conditions and the following disclaimer in the
573 * documentation and/or other materials provided with the distribution.
574 *
575 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
576 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
577 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
578 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
579 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
580 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
581 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
582 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
583 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
584 * OF THE POSSIBILITY OF SUCH DAMAGE.
585 *
586 * Alternatively, the contents of this file may be used under the terms of
587 * the GNU General Public License ("GPL") version 2 or any later version,
588 * in which case the provisions of the GPL are applicable instead of
589 * the above. If you wish to allow the use of your version of this file
590 * only under the terms of the GPL and not to allow others to use your
591 * version of this file under the BSD license, indicate your decision
592 * by deleting the provisions above and replace them with the notice
593 * and other provisions required by the GPL. If you do not delete the
594 * provisions above, a recipient may use your version of this file under
595 * either the BSD or the GPL.
596 */
597
598#ifndef ECB_H
599#define ECB_H
600
601/* 16 bits major, 16 bits minor */
602#define ECB_VERSION 0x00010006
603
604#ifdef _WIN32
605 typedef signed char int8_t;
606 typedef unsigned char uint8_t;
607 typedef signed short int16_t;
608 typedef unsigned short uint16_t;
609 typedef signed int int32_t;
610 typedef unsigned int uint32_t;
375#if __GNUC__ >= 4 611 #if __GNUC__
376# define expect(expr,value) __builtin_expect ((expr),(value)) 612 typedef signed long long int64_t;
377# define noinline __attribute__ ((noinline)) 613 typedef unsigned long long uint64_t;
614 #else /* _MSC_VER || __BORLANDC__ */
615 typedef signed __int64 int64_t;
616 typedef unsigned __int64 uint64_t;
617 #endif
618 #ifdef _WIN64
619 #define ECB_PTRSIZE 8
620 typedef uint64_t uintptr_t;
621 typedef int64_t intptr_t;
622 #else
623 #define ECB_PTRSIZE 4
624 typedef uint32_t uintptr_t;
625 typedef int32_t intptr_t;
626 #endif
378#else 627#else
379# define expect(expr,value) (expr) 628 #include <inttypes.h>
380# define noinline 629 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
381# if __STDC_VERSION__ < 199901L && __GNUC__ < 2 630 #define ECB_PTRSIZE 8
382# define inline 631 #else
632 #define ECB_PTRSIZE 4
633 #endif
383# endif 634#endif
635
636#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
637#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
638
639/* work around x32 idiocy by defining proper macros */
640#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
641 #if _ILP32
642 #define ECB_AMD64_X32 1
643 #else
644 #define ECB_AMD64 1
384#endif 645 #endif
646#endif
385 647
386#define expect_false(expr) expect ((expr) != 0, 0) 648/* many compilers define _GNUC_ to some versions but then only implement
387#define expect_true(expr) expect ((expr) != 0, 1) 649 * what their idiot authors think are the "more important" extensions,
388#define inline_size static inline 650 * causing enormous grief in return for some better fake benchmark numbers.
389 651 * or so.
390#if EV_MINIMAL 652 * we try to detect these and simply assume they are not gcc - if they have
391# define inline_speed static noinline 653 * an issue with that they should have done it right in the first place.
654 */
655#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
656 #define ECB_GCC_VERSION(major,minor) 0
392#else 657#else
658 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
659#endif
660
661#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
662
663#if __clang__ && defined __has_builtin
664 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
665#else
666 #define ECB_CLANG_BUILTIN(x) 0
667#endif
668
669#if __clang__ && defined __has_extension
670 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
671#else
672 #define ECB_CLANG_EXTENSION(x) 0
673#endif
674
675#define ECB_CPP (__cplusplus+0)
676#define ECB_CPP11 (__cplusplus >= 201103L)
677#define ECB_CPP14 (__cplusplus >= 201402L)
678#define ECB_CPP17 (__cplusplus >= 201703L)
679
680#if ECB_CPP
681 #define ECB_C 0
682 #define ECB_STDC_VERSION 0
683#else
684 #define ECB_C 1
685 #define ECB_STDC_VERSION __STDC_VERSION__
686#endif
687
688#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
689#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
690#define ECB_C17 (ECB_STDC_VERSION >= 201710L)
691
692#if ECB_CPP
693 #define ECB_EXTERN_C extern "C"
694 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
695 #define ECB_EXTERN_C_END }
696#else
697 #define ECB_EXTERN_C extern
698 #define ECB_EXTERN_C_BEG
699 #define ECB_EXTERN_C_END
700#endif
701
702/*****************************************************************************/
703
704/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
705/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
706
707#if ECB_NO_THREADS
708 #define ECB_NO_SMP 1
709#endif
710
711#if ECB_NO_SMP
712 #define ECB_MEMORY_FENCE do { } while (0)
713#endif
714
715/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
716#if __xlC__ && ECB_CPP
717 #include <builtins.h>
718#endif
719
720#if 1400 <= _MSC_VER
721 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
722#endif
723
724#ifndef ECB_MEMORY_FENCE
725 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
726 #define ECB_MEMORY_FENCE_RELAXED __asm__ __volatile__ ("" : : : "memory")
727 #if __i386 || __i386__
728 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
729 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
730 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
731 #elif ECB_GCC_AMD64
732 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
733 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
734 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
735 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
736 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
737 #elif defined __ARM_ARCH_2__ \
738 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
739 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
740 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
741 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
742 || defined __ARM_ARCH_5TEJ__
743 /* should not need any, unless running old code on newer cpu - arm doesn't support that */
744 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
745 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
746 || defined __ARM_ARCH_6T2__
747 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
748 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
749 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
750 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
751 #elif __aarch64__
752 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
753 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
754 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
755 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
756 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
757 #elif defined __s390__ || defined __s390x__
758 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
759 #elif defined __mips__
760 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
761 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
762 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
763 #elif defined __alpha__
764 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
765 #elif defined __hppa__
766 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
767 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
768 #elif defined __ia64__
769 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
770 #elif defined __m68k__
771 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
772 #elif defined __m88k__
773 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
774 #elif defined __sh__
775 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
776 #endif
777 #endif
778#endif
779
780#ifndef ECB_MEMORY_FENCE
781 #if ECB_GCC_VERSION(4,7)
782 /* see comment below (stdatomic.h) about the C11 memory model. */
783 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
784 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
785 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
786 #define ECB_MEMORY_FENCE_RELAXED __atomic_thread_fence (__ATOMIC_RELAXED)
787
788 #elif ECB_CLANG_EXTENSION(c_atomic)
789 /* see comment below (stdatomic.h) about the C11 memory model. */
790 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
791 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
792 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
793 #define ECB_MEMORY_FENCE_RELAXED __c11_atomic_thread_fence (__ATOMIC_RELAXED)
794
795 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
796 #define ECB_MEMORY_FENCE __sync_synchronize ()
797 #elif _MSC_VER >= 1500 /* VC++ 2008 */
798 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
799 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
800 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
801 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
802 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
803 #elif _MSC_VER >= 1400 /* VC++ 2005 */
804 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
805 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
806 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
807 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
808 #elif defined _WIN32
809 #include <WinNT.h>
810 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
811 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
812 #include <mbarrier.h>
813 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
814 #define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier ()
815 #define ECB_MEMORY_FENCE_RELEASE __machine_rel_barrier ()
816 #define ECB_MEMORY_FENCE_RELAXED __compiler_barrier ()
817 #elif __xlC__
818 #define ECB_MEMORY_FENCE __sync ()
819 #endif
820#endif
821
822#ifndef ECB_MEMORY_FENCE
823 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
824 /* we assume that these memory fences work on all variables/all memory accesses, */
825 /* not just C11 atomics and atomic accesses */
826 #include <stdatomic.h>
827 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
828 #define ECB_MEMORY_FENCE_ACQUIRE atomic_thread_fence (memory_order_acquire)
829 #define ECB_MEMORY_FENCE_RELEASE atomic_thread_fence (memory_order_release)
830 #endif
831#endif
832
833#ifndef ECB_MEMORY_FENCE
834 #if !ECB_AVOID_PTHREADS
835 /*
836 * if you get undefined symbol references to pthread_mutex_lock,
837 * or failure to find pthread.h, then you should implement
838 * the ECB_MEMORY_FENCE operations for your cpu/compiler
839 * OR provide pthread.h and link against the posix thread library
840 * of your system.
841 */
842 #include <pthread.h>
843 #define ECB_NEEDS_PTHREADS 1
844 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
845
846 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
847 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
848 #endif
849#endif
850
851#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
852 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
853#endif
854
855#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
856 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
857#endif
858
859#if !defined ECB_MEMORY_FENCE_RELAXED && defined ECB_MEMORY_FENCE
860 #define ECB_MEMORY_FENCE_RELAXED ECB_MEMORY_FENCE /* very heavy-handed */
861#endif
862
863/*****************************************************************************/
864
865#if ECB_CPP
866 #define ecb_inline static inline
867#elif ECB_GCC_VERSION(2,5)
868 #define ecb_inline static __inline__
869#elif ECB_C99
870 #define ecb_inline static inline
871#else
872 #define ecb_inline static
873#endif
874
875#if ECB_GCC_VERSION(3,3)
876 #define ecb_restrict __restrict__
877#elif ECB_C99
878 #define ecb_restrict restrict
879#else
880 #define ecb_restrict
881#endif
882
883typedef int ecb_bool;
884
885#define ECB_CONCAT_(a, b) a ## b
886#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
887#define ECB_STRINGIFY_(a) # a
888#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
889#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
890
891#define ecb_function_ ecb_inline
892
893#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
894 #define ecb_attribute(attrlist) __attribute__ (attrlist)
895#else
896 #define ecb_attribute(attrlist)
897#endif
898
899#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
900 #define ecb_is_constant(expr) __builtin_constant_p (expr)
901#else
902 /* possible C11 impl for integral types
903 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
904 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
905
906 #define ecb_is_constant(expr) 0
907#endif
908
909#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
910 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
911#else
912 #define ecb_expect(expr,value) (expr)
913#endif
914
915#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
916 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
917#else
918 #define ecb_prefetch(addr,rw,locality)
919#endif
920
921/* no emulation for ecb_decltype */
922#if ECB_CPP11
923 // older implementations might have problems with decltype(x)::type, work around it
924 template<class T> struct ecb_decltype_t { typedef T type; };
925 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
926#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
927 #define ecb_decltype(x) __typeof__ (x)
928#endif
929
930#if _MSC_VER >= 1300
931 #define ecb_deprecated __declspec (deprecated)
932#else
933 #define ecb_deprecated ecb_attribute ((__deprecated__))
934#endif
935
936#if _MSC_VER >= 1500
937 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
938#elif ECB_GCC_VERSION(4,5)
939 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
940#else
941 #define ecb_deprecated_message(msg) ecb_deprecated
942#endif
943
944#if _MSC_VER >= 1400
945 #define ecb_noinline __declspec (noinline)
946#else
947 #define ecb_noinline ecb_attribute ((__noinline__))
948#endif
949
950#define ecb_unused ecb_attribute ((__unused__))
951#define ecb_const ecb_attribute ((__const__))
952#define ecb_pure ecb_attribute ((__pure__))
953
954#if ECB_C11 || __IBMC_NORETURN
955 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
956 #define ecb_noreturn _Noreturn
957#elif ECB_CPP11
958 #define ecb_noreturn [[noreturn]]
959#elif _MSC_VER >= 1200
960 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
961 #define ecb_noreturn __declspec (noreturn)
962#else
963 #define ecb_noreturn ecb_attribute ((__noreturn__))
964#endif
965
966#if ECB_GCC_VERSION(4,3)
967 #define ecb_artificial ecb_attribute ((__artificial__))
968 #define ecb_hot ecb_attribute ((__hot__))
969 #define ecb_cold ecb_attribute ((__cold__))
970#else
971 #define ecb_artificial
972 #define ecb_hot
973 #define ecb_cold
974#endif
975
976/* put around conditional expressions if you are very sure that the */
977/* expression is mostly true or mostly false. note that these return */
978/* booleans, not the expression. */
979#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
980#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
981/* for compatibility to the rest of the world */
982#define ecb_likely(expr) ecb_expect_true (expr)
983#define ecb_unlikely(expr) ecb_expect_false (expr)
984
985/* count trailing zero bits and count # of one bits */
986#if ECB_GCC_VERSION(3,4) \
987 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
988 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
989 && ECB_CLANG_BUILTIN(__builtin_popcount))
990 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
991 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
992 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
993 #define ecb_ctz32(x) __builtin_ctz (x)
994 #define ecb_ctz64(x) __builtin_ctzll (x)
995 #define ecb_popcount32(x) __builtin_popcount (x)
996 /* no popcountll */
997#else
998 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
999 ecb_function_ ecb_const int
1000 ecb_ctz32 (uint32_t x)
1001 {
1002#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1003 unsigned long r;
1004 _BitScanForward (&r, x);
1005 return (int)r;
1006#else
1007 int r = 0;
1008
1009 x &= ~x + 1; /* this isolates the lowest bit */
1010
1011#if ECB_branchless_on_i386
1012 r += !!(x & 0xaaaaaaaa) << 0;
1013 r += !!(x & 0xcccccccc) << 1;
1014 r += !!(x & 0xf0f0f0f0) << 2;
1015 r += !!(x & 0xff00ff00) << 3;
1016 r += !!(x & 0xffff0000) << 4;
1017#else
1018 if (x & 0xaaaaaaaa) r += 1;
1019 if (x & 0xcccccccc) r += 2;
1020 if (x & 0xf0f0f0f0) r += 4;
1021 if (x & 0xff00ff00) r += 8;
1022 if (x & 0xffff0000) r += 16;
1023#endif
1024
1025 return r;
1026#endif
1027 }
1028
1029 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
1030 ecb_function_ ecb_const int
1031 ecb_ctz64 (uint64_t x)
1032 {
1033#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1034 unsigned long r;
1035 _BitScanForward64 (&r, x);
1036 return (int)r;
1037#else
1038 int shift = x & 0xffffffff ? 0 : 32;
1039 return ecb_ctz32 (x >> shift) + shift;
1040#endif
1041 }
1042
1043 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
1044 ecb_function_ ecb_const int
1045 ecb_popcount32 (uint32_t x)
1046 {
1047 x -= (x >> 1) & 0x55555555;
1048 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
1049 x = ((x >> 4) + x) & 0x0f0f0f0f;
1050 x *= 0x01010101;
1051
1052 return x >> 24;
1053 }
1054
1055 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
1056 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
1057 {
1058#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1059 unsigned long r;
1060 _BitScanReverse (&r, x);
1061 return (int)r;
1062#else
1063 int r = 0;
1064
1065 if (x >> 16) { x >>= 16; r += 16; }
1066 if (x >> 8) { x >>= 8; r += 8; }
1067 if (x >> 4) { x >>= 4; r += 4; }
1068 if (x >> 2) { x >>= 2; r += 2; }
1069 if (x >> 1) { r += 1; }
1070
1071 return r;
1072#endif
1073 }
1074
1075 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
1076 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
1077 {
1078#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1079 unsigned long r;
1080 _BitScanReverse64 (&r, x);
1081 return (int)r;
1082#else
1083 int r = 0;
1084
1085 if (x >> 32) { x >>= 32; r += 32; }
1086
1087 return r + ecb_ld32 (x);
1088#endif
1089 }
1090#endif
1091
1092ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
1093ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
1094ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
1095ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
1096
1097ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
1098ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
1099{
1100 return ( (x * 0x0802U & 0x22110U)
1101 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
1102}
1103
1104ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
1105ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
1106{
1107 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
1108 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
1109 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
1110 x = ( x >> 8 ) | ( x << 8);
1111
1112 return x;
1113}
1114
1115ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
1116ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
1117{
1118 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
1119 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
1120 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
1121 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
1122 x = ( x >> 16 ) | ( x << 16);
1123
1124 return x;
1125}
1126
1127/* popcount64 is only available on 64 bit cpus as gcc builtin */
1128/* so for this version we are lazy */
1129ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
1130ecb_function_ ecb_const int
1131ecb_popcount64 (uint64_t x)
1132{
1133 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
1134}
1135
1136ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
1137ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
1138ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
1139ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
1140ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
1141ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
1142ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
1143ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
1144
1145ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
1146ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
1147ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
1148ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
1149ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
1150ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
1151ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
1152ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
1153
1154#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1155 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1156 #define ecb_bswap16(x) __builtin_bswap16 (x)
1157 #else
1158 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1159 #endif
1160 #define ecb_bswap32(x) __builtin_bswap32 (x)
1161 #define ecb_bswap64(x) __builtin_bswap64 (x)
1162#elif _MSC_VER
1163 #include <stdlib.h>
1164 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1165 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1166 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
1167#else
1168 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
1169 ecb_function_ ecb_const uint16_t
1170 ecb_bswap16 (uint16_t x)
1171 {
1172 return ecb_rotl16 (x, 8);
1173 }
1174
1175 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
1176 ecb_function_ ecb_const uint32_t
1177 ecb_bswap32 (uint32_t x)
1178 {
1179 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
1180 }
1181
1182 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
1183 ecb_function_ ecb_const uint64_t
1184 ecb_bswap64 (uint64_t x)
1185 {
1186 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
1187 }
1188#endif
1189
1190#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
1191 #define ecb_unreachable() __builtin_unreachable ()
1192#else
1193 /* this seems to work fine, but gcc always emits a warning for it :/ */
1194 ecb_inline ecb_noreturn void ecb_unreachable (void);
1195 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
1196#endif
1197
1198/* try to tell the compiler that some condition is definitely true */
1199#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
1200
1201ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
1202ecb_inline ecb_const uint32_t
1203ecb_byteorder_helper (void)
1204{
1205 /* the union code still generates code under pressure in gcc, */
1206 /* but less than using pointers, and always seems to */
1207 /* successfully return a constant. */
1208 /* the reason why we have this horrible preprocessor mess */
1209 /* is to avoid it in all cases, at least on common architectures */
1210 /* or when using a recent enough gcc version (>= 4.6) */
1211#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1212 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1213 #define ECB_LITTLE_ENDIAN 1
1214 return 0x44332211;
1215#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1216 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1217 #define ECB_BIG_ENDIAN 1
1218 return 0x11223344;
1219#else
1220 union
1221 {
1222 uint8_t c[4];
1223 uint32_t u;
1224 } u = { 0x11, 0x22, 0x33, 0x44 };
1225 return u.u;
1226#endif
1227}
1228
1229ecb_inline ecb_const ecb_bool ecb_big_endian (void);
1230ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
1231ecb_inline ecb_const ecb_bool ecb_little_endian (void);
1232ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
1233
1234#if ECB_GCC_VERSION(3,0) || ECB_C99
1235 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1236#else
1237 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1238#endif
1239
1240#if ECB_CPP
1241 template<typename T>
1242 static inline T ecb_div_rd (T val, T div)
1243 {
1244 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1245 }
1246 template<typename T>
1247 static inline T ecb_div_ru (T val, T div)
1248 {
1249 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1250 }
1251#else
1252 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1253 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1254#endif
1255
1256#if ecb_cplusplus_does_not_suck
1257 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1258 template<typename T, int N>
1259 static inline int ecb_array_length (const T (&arr)[N])
1260 {
1261 return N;
1262 }
1263#else
1264 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1265#endif
1266
1267ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1268ecb_function_ ecb_const uint32_t
1269ecb_binary16_to_binary32 (uint32_t x)
1270{
1271 unsigned int s = (x & 0x8000) << (31 - 15);
1272 int e = (x >> 10) & 0x001f;
1273 unsigned int m = x & 0x03ff;
1274
1275 if (ecb_expect_false (e == 31))
1276 /* infinity or NaN */
1277 e = 255 - (127 - 15);
1278 else if (ecb_expect_false (!e))
1279 {
1280 if (ecb_expect_true (!m))
1281 /* zero, handled by code below by forcing e to 0 */
1282 e = 0 - (127 - 15);
1283 else
1284 {
1285 /* subnormal, renormalise */
1286 unsigned int s = 10 - ecb_ld32 (m);
1287
1288 m = (m << s) & 0x3ff; /* mask implicit bit */
1289 e -= s - 1;
1290 }
1291 }
1292
1293 /* e and m now are normalised, or zero, (or inf or nan) */
1294 e += 127 - 15;
1295
1296 return s | (e << 23) | (m << (23 - 10));
1297}
1298
1299ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1300ecb_function_ ecb_const uint16_t
1301ecb_binary32_to_binary16 (uint32_t x)
1302{
1303 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1304 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1305 unsigned int m = x & 0x007fffff;
1306
1307 x &= 0x7fffffff;
1308
1309 /* if it's within range of binary16 normals, use fast path */
1310 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1311 {
1312 /* mantissa round-to-even */
1313 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1314
1315 /* handle overflow */
1316 if (ecb_expect_false (m >= 0x00800000))
1317 {
1318 m >>= 1;
1319 e += 1;
1320 }
1321
1322 return s | (e << 10) | (m >> (23 - 10));
1323 }
1324
1325 /* handle large numbers and infinity */
1326 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1327 return s | 0x7c00;
1328
1329 /* handle zero, subnormals and small numbers */
1330 if (ecb_expect_true (x < 0x38800000))
1331 {
1332 /* zero */
1333 if (ecb_expect_true (!x))
1334 return s;
1335
1336 /* handle subnormals */
1337
1338 /* too small, will be zero */
1339 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1340 return s;
1341
1342 m |= 0x00800000; /* make implicit bit explicit */
1343
1344 /* very tricky - we need to round to the nearest e (+10) bit value */
1345 {
1346 unsigned int bits = 14 - e;
1347 unsigned int half = (1 << (bits - 1)) - 1;
1348 unsigned int even = (m >> bits) & 1;
1349
1350 /* if this overflows, we will end up with a normalised number */
1351 m = (m + half + even) >> bits;
1352 }
1353
1354 return s | m;
1355 }
1356
1357 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1358 m >>= 13;
1359
1360 return s | 0x7c00 | m | !m;
1361}
1362
1363/*******************************************************************************/
1364/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1365
1366/* basically, everything uses "ieee pure-endian" floating point numbers */
1367/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1368#if 0 \
1369 || __i386 || __i386__ \
1370 || ECB_GCC_AMD64 \
1371 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1372 || defined __s390__ || defined __s390x__ \
1373 || defined __mips__ \
1374 || defined __alpha__ \
1375 || defined __hppa__ \
1376 || defined __ia64__ \
1377 || defined __m68k__ \
1378 || defined __m88k__ \
1379 || defined __sh__ \
1380 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1381 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1382 || defined __aarch64__
1383 #define ECB_STDFP 1
1384 #include <string.h> /* for memcpy */
1385#else
1386 #define ECB_STDFP 0
1387#endif
1388
1389#ifndef ECB_NO_LIBM
1390
1391 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1392
1393 /* only the oldest of old doesn't have this one. solaris. */
1394 #ifdef INFINITY
1395 #define ECB_INFINITY INFINITY
1396 #else
1397 #define ECB_INFINITY HUGE_VAL
1398 #endif
1399
1400 #ifdef NAN
1401 #define ECB_NAN NAN
1402 #else
1403 #define ECB_NAN ECB_INFINITY
1404 #endif
1405
1406 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1407 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1408 #define ecb_frexpf(x,e) frexpf ((x), (e))
1409 #else
1410 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1411 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1412 #endif
1413
1414 /* convert a float to ieee single/binary32 */
1415 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1416 ecb_function_ ecb_const uint32_t
1417 ecb_float_to_binary32 (float x)
1418 {
1419 uint32_t r;
1420
1421 #if ECB_STDFP
1422 memcpy (&r, &x, 4);
1423 #else
1424 /* slow emulation, works for anything but -0 */
1425 uint32_t m;
1426 int e;
1427
1428 if (x == 0e0f ) return 0x00000000U;
1429 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1430 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1431 if (x != x ) return 0x7fbfffffU;
1432
1433 m = ecb_frexpf (x, &e) * 0x1000000U;
1434
1435 r = m & 0x80000000U;
1436
1437 if (r)
1438 m = -m;
1439
1440 if (e <= -126)
1441 {
1442 m &= 0xffffffU;
1443 m >>= (-125 - e);
1444 e = -126;
1445 }
1446
1447 r |= (e + 126) << 23;
1448 r |= m & 0x7fffffU;
1449 #endif
1450
1451 return r;
1452 }
1453
1454 /* converts an ieee single/binary32 to a float */
1455 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1456 ecb_function_ ecb_const float
1457 ecb_binary32_to_float (uint32_t x)
1458 {
1459 float r;
1460
1461 #if ECB_STDFP
1462 memcpy (&r, &x, 4);
1463 #else
1464 /* emulation, only works for normals and subnormals and +0 */
1465 int neg = x >> 31;
1466 int e = (x >> 23) & 0xffU;
1467
1468 x &= 0x7fffffU;
1469
1470 if (e)
1471 x |= 0x800000U;
1472 else
1473 e = 1;
1474
1475 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1476 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1477
1478 r = neg ? -r : r;
1479 #endif
1480
1481 return r;
1482 }
1483
1484 /* convert a double to ieee double/binary64 */
1485 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1486 ecb_function_ ecb_const uint64_t
1487 ecb_double_to_binary64 (double x)
1488 {
1489 uint64_t r;
1490
1491 #if ECB_STDFP
1492 memcpy (&r, &x, 8);
1493 #else
1494 /* slow emulation, works for anything but -0 */
1495 uint64_t m;
1496 int e;
1497
1498 if (x == 0e0 ) return 0x0000000000000000U;
1499 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1500 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1501 if (x != x ) return 0X7ff7ffffffffffffU;
1502
1503 m = frexp (x, &e) * 0x20000000000000U;
1504
1505 r = m & 0x8000000000000000;;
1506
1507 if (r)
1508 m = -m;
1509
1510 if (e <= -1022)
1511 {
1512 m &= 0x1fffffffffffffU;
1513 m >>= (-1021 - e);
1514 e = -1022;
1515 }
1516
1517 r |= ((uint64_t)(e + 1022)) << 52;
1518 r |= m & 0xfffffffffffffU;
1519 #endif
1520
1521 return r;
1522 }
1523
1524 /* converts an ieee double/binary64 to a double */
1525 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1526 ecb_function_ ecb_const double
1527 ecb_binary64_to_double (uint64_t x)
1528 {
1529 double r;
1530
1531 #if ECB_STDFP
1532 memcpy (&r, &x, 8);
1533 #else
1534 /* emulation, only works for normals and subnormals and +0 */
1535 int neg = x >> 63;
1536 int e = (x >> 52) & 0x7ffU;
1537
1538 x &= 0xfffffffffffffU;
1539
1540 if (e)
1541 x |= 0x10000000000000U;
1542 else
1543 e = 1;
1544
1545 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1546 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1547
1548 r = neg ? -r : r;
1549 #endif
1550
1551 return r;
1552 }
1553
1554 /* convert a float to ieee half/binary16 */
1555 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1556 ecb_function_ ecb_const uint16_t
1557 ecb_float_to_binary16 (float x)
1558 {
1559 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1560 }
1561
1562 /* convert an ieee half/binary16 to float */
1563 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1564 ecb_function_ ecb_const float
1565 ecb_binary16_to_float (uint16_t x)
1566 {
1567 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1568 }
1569
1570#endif
1571
1572#endif
1573
1574/* ECB.H END */
1575
1576#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1577/* if your architecture doesn't need memory fences, e.g. because it is
1578 * single-cpu/core, or if you use libev in a project that doesn't use libev
1579 * from multiple threads, then you can define ECB_NO_THREADS when compiling
1580 * libev, in which cases the memory fences become nops.
1581 * alternatively, you can remove this #error and link against libpthread,
1582 * which will then provide the memory fences.
1583 */
1584# error "memory fences not defined for your architecture, please report"
1585#endif
1586
1587#ifndef ECB_MEMORY_FENCE
1588# define ECB_MEMORY_FENCE do { } while (0)
1589# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1590# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1591#endif
1592
1593#define inline_size ecb_inline
1594
1595#if EV_FEATURE_CODE
393# define inline_speed static inline 1596# define inline_speed ecb_inline
1597#else
1598# define inline_speed ecb_noinline static
394#endif 1599#endif
1600
1601/*****************************************************************************/
1602/* raw syscall wrappers */
1603
1604#if EV_NEED_SYSCALL
1605
1606#include <sys/syscall.h>
1607
1608/*
1609 * define some syscall wrappers for common architectures
1610 * this is mostly for nice looks during debugging, not performance.
1611 * our syscalls return < 0, not == -1, on error. which is good
1612 * enough for linux aio.
1613 * TODO: arm is also common nowadays, maybe even mips and x86
1614 * TODO: after implementing this, it suddenly looks like overkill, but its hard to remove...
1615 */
1616#if __GNUC__ && __linux && ECB_AMD64 && !defined __OPTIMIZE_SIZE__
1617 /* the costly errno access probably kills this for size optimisation */
1618
1619 #define ev_syscall(nr,narg,arg1,arg2,arg3,arg4,arg5,arg6) \
1620 ({ \
1621 long res; \
1622 register unsigned long r6 __asm__ ("r9" ); \
1623 register unsigned long r5 __asm__ ("r8" ); \
1624 register unsigned long r4 __asm__ ("r10"); \
1625 register unsigned long r3 __asm__ ("rdx"); \
1626 register unsigned long r2 __asm__ ("rsi"); \
1627 register unsigned long r1 __asm__ ("rdi"); \
1628 if (narg >= 6) r6 = (unsigned long)(arg6); \
1629 if (narg >= 5) r5 = (unsigned long)(arg5); \
1630 if (narg >= 4) r4 = (unsigned long)(arg4); \
1631 if (narg >= 3) r3 = (unsigned long)(arg3); \
1632 if (narg >= 2) r2 = (unsigned long)(arg2); \
1633 if (narg >= 1) r1 = (unsigned long)(arg1); \
1634 __asm__ __volatile__ ( \
1635 "syscall\n\t" \
1636 : "=a" (res) \
1637 : "0" (nr), "r" (r1), "r" (r2), "r" (r3), "r" (r4), "r" (r5) \
1638 : "cc", "r11", "cx", "memory"); \
1639 errno = -res; \
1640 res; \
1641 })
1642
1643#endif
1644
1645#ifdef ev_syscall
1646 #define ev_syscall0(nr) ev_syscall (nr, 0, 0, 0, 0, 0, 0, 0)
1647 #define ev_syscall1(nr,arg1) ev_syscall (nr, 1, arg1, 0, 0, 0, 0, 0)
1648 #define ev_syscall2(nr,arg1,arg2) ev_syscall (nr, 2, arg1, arg2, 0, 0, 0, 0)
1649 #define ev_syscall3(nr,arg1,arg2,arg3) ev_syscall (nr, 3, arg1, arg2, arg3, 0, 0, 0)
1650 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) ev_syscall (nr, 3, arg1, arg2, arg3, arg4, 0, 0)
1651 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) ev_syscall (nr, 5, arg1, arg2, arg3, arg4, arg5, 0)
1652 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) ev_syscall (nr, 6, arg1, arg2, arg3, arg4, arg5,arg6)
1653#else
1654 #define ev_syscall0(nr) syscall (nr)
1655 #define ev_syscall1(nr,arg1) syscall (nr, arg1)
1656 #define ev_syscall2(nr,arg1,arg2) syscall (nr, arg1, arg2)
1657 #define ev_syscall3(nr,arg1,arg2,arg3) syscall (nr, arg1, arg2, arg3)
1658 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) syscall (nr, arg1, arg2, arg3, arg4)
1659 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) syscall (nr, arg1, arg2, arg3, arg4, arg5)
1660 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) syscall (nr, arg1, arg2, arg3, arg4, arg5,arg6)
1661#endif
1662
1663#endif
1664
1665/*****************************************************************************/
395 1666
396#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1667#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
397 1668
398#if EV_MINPRI == EV_MAXPRI 1669#if EV_MINPRI == EV_MAXPRI
399# define ABSPRI(w) (((W)w), 0) 1670# define ABSPRI(w) (((W)w), 0)
400#else 1671#else
401# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1672# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
402#endif 1673#endif
403 1674
404#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1675#define EMPTY /* required for microsofts broken pseudo-c compiler */
405#define EMPTY2(a,b) /* used to suppress some warnings */
406 1676
407typedef ev_watcher *W; 1677typedef ev_watcher *W;
408typedef ev_watcher_list *WL; 1678typedef ev_watcher_list *WL;
409typedef ev_watcher_time *WT; 1679typedef ev_watcher_time *WT;
410 1680
411#define ev_active(w) ((W)(w))->active 1681#define ev_active(w) ((W)(w))->active
412#define ev_at(w) ((WT)(w))->at 1682#define ev_at(w) ((WT)(w))->at
413 1683
414#if EV_USE_REALTIME 1684#if EV_USE_REALTIME
415/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 1685/* 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 */ 1686/* giving it a reasonably high chance of working on typical architectures */
417static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 1687static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
418#endif 1688#endif
419 1689
420#if EV_USE_MONOTONIC 1690#if EV_USE_MONOTONIC
421static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 1691static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
422#endif 1692#endif
423 1693
1694#ifndef EV_FD_TO_WIN32_HANDLE
1695# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
1696#endif
1697#ifndef EV_WIN32_HANDLE_TO_FD
1698# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
1699#endif
1700#ifndef EV_WIN32_CLOSE_FD
1701# define EV_WIN32_CLOSE_FD(fd) close (fd)
1702#endif
1703
424#ifdef _WIN32 1704#ifdef _WIN32
425# include "ev_win32.c" 1705# include "ev_win32.c"
426#endif 1706#endif
427 1707
428/*****************************************************************************/ 1708/*****************************************************************************/
429 1709
1710#if EV_USE_LINUXAIO
1711# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
1712#endif
1713
1714/* define a suitable floor function (only used by periodics atm) */
1715
1716#if EV_USE_FLOOR
1717# include <math.h>
1718# define ev_floor(v) floor (v)
1719#else
1720
1721#include <float.h>
1722
1723/* a floor() replacement function, should be independent of ev_tstamp type */
1724ecb_noinline
1725static ev_tstamp
1726ev_floor (ev_tstamp v)
1727{
1728 /* the choice of shift factor is not terribly important */
1729#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1730 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1731#else
1732 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1733#endif
1734
1735 /* special treatment for negative arguments */
1736 if (ecb_expect_false (v < 0.))
1737 {
1738 ev_tstamp f = -ev_floor (-v);
1739
1740 return f - (f == v ? 0 : 1);
1741 }
1742
1743 /* argument too large for an unsigned long? then reduce it */
1744 if (ecb_expect_false (v >= shift))
1745 {
1746 ev_tstamp f;
1747
1748 if (v == v - 1.)
1749 return v; /* very large numbers are assumed to be integer */
1750
1751 f = shift * ev_floor (v * (1. / shift));
1752 return f + ev_floor (v - f);
1753 }
1754
1755 /* fits into an unsigned long */
1756 return (unsigned long)v;
1757}
1758
1759#endif
1760
1761/*****************************************************************************/
1762
1763#ifdef __linux
1764# include <sys/utsname.h>
1765#endif
1766
1767ecb_noinline ecb_cold
1768static unsigned int
1769ev_linux_version (void)
1770{
1771#ifdef __linux
1772 unsigned int v = 0;
1773 struct utsname buf;
1774 int i;
1775 char *p = buf.release;
1776
1777 if (uname (&buf))
1778 return 0;
1779
1780 for (i = 3+1; --i; )
1781 {
1782 unsigned int c = 0;
1783
1784 for (;;)
1785 {
1786 if (*p >= '0' && *p <= '9')
1787 c = c * 10 + *p++ - '0';
1788 else
1789 {
1790 p += *p == '.';
1791 break;
1792 }
1793 }
1794
1795 v = (v << 8) | c;
1796 }
1797
1798 return v;
1799#else
1800 return 0;
1801#endif
1802}
1803
1804/*****************************************************************************/
1805
1806#if EV_AVOID_STDIO
1807ecb_noinline ecb_cold
1808static void
1809ev_printerr (const char *msg)
1810{
1811 write (STDERR_FILENO, msg, strlen (msg));
1812}
1813#endif
1814
430static void (*syserr_cb)(const char *msg); 1815static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
431 1816
1817ecb_cold
432void 1818void
433ev_set_syserr_cb (void (*cb)(const char *msg)) 1819ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
434{ 1820{
435 syserr_cb = cb; 1821 syserr_cb = cb;
436} 1822}
437 1823
438static void noinline 1824ecb_noinline ecb_cold
1825static void
439ev_syserr (const char *msg) 1826ev_syserr (const char *msg)
440{ 1827{
441 if (!msg) 1828 if (!msg)
442 msg = "(libev) system error"; 1829 msg = "(libev) system error";
443 1830
444 if (syserr_cb) 1831 if (syserr_cb)
445 syserr_cb (msg); 1832 syserr_cb (msg);
446 else 1833 else
447 { 1834 {
1835#if EV_AVOID_STDIO
1836 ev_printerr (msg);
1837 ev_printerr (": ");
1838 ev_printerr (strerror (errno));
1839 ev_printerr ("\n");
1840#else
448 perror (msg); 1841 perror (msg);
1842#endif
449 abort (); 1843 abort ();
450 } 1844 }
451} 1845}
452 1846
453static void * 1847static void *
454ev_realloc_emul (void *ptr, long size) 1848ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
455{ 1849{
456 /* some systems, notably openbsd and darwin, fail to properly 1850 /* some systems, notably openbsd and darwin, fail to properly
457 * implement realloc (x, 0) (as required by both ansi c-98 and 1851 * implement realloc (x, 0) (as required by both ansi c-89 and
458 * the single unix specification, so work around them here. 1852 * the single unix specification, so work around them here.
1853 * recently, also (at least) fedora and debian started breaking it,
1854 * despite documenting it otherwise.
459 */ 1855 */
460 1856
461 if (size) 1857 if (size)
462 return realloc (ptr, size); 1858 return realloc (ptr, size);
463 1859
464 free (ptr); 1860 free (ptr);
465 return 0; 1861 return 0;
466} 1862}
467 1863
468static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1864static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
469 1865
1866ecb_cold
470void 1867void
471ev_set_allocator (void *(*cb)(void *ptr, long size)) 1868ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
472{ 1869{
473 alloc = cb; 1870 alloc = cb;
474} 1871}
475 1872
476inline_speed void * 1873inline_speed void *
… …
478{ 1875{
479 ptr = alloc (ptr, size); 1876 ptr = alloc (ptr, size);
480 1877
481 if (!ptr && size) 1878 if (!ptr && size)
482 { 1879 {
1880#if EV_AVOID_STDIO
1881 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1882#else
483 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1883 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1884#endif
484 abort (); 1885 abort ();
485 } 1886 }
486 1887
487 return ptr; 1888 return ptr;
488} 1889}
… …
490#define ev_malloc(size) ev_realloc (0, (size)) 1891#define ev_malloc(size) ev_realloc (0, (size))
491#define ev_free(ptr) ev_realloc ((ptr), 0) 1892#define ev_free(ptr) ev_realloc ((ptr), 0)
492 1893
493/*****************************************************************************/ 1894/*****************************************************************************/
494 1895
1896/* set in reify when reification needed */
1897#define EV_ANFD_REIFY 1
1898
495/* file descriptor info structure */ 1899/* file descriptor info structure */
496typedef struct 1900typedef struct
497{ 1901{
498 WL head; 1902 WL head;
499 unsigned char events; /* the events watched for */ 1903 unsigned char events; /* the events watched for */
500 unsigned char reify; /* flag set when this ANFD needs reification */ 1904 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 */ 1905 unsigned char emask; /* some backends store the actual kernel mask in here */
502 unsigned char unused; 1906 unsigned char eflags; /* flags field for use by backends */
503#if EV_USE_EPOLL 1907#if EV_USE_EPOLL
504 unsigned int egen; /* generation counter to counter epoll bugs */ 1908 unsigned int egen; /* generation counter to counter epoll bugs */
505#endif 1909#endif
506#if EV_SELECT_IS_WINSOCKET 1910#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
507 SOCKET handle; 1911 SOCKET handle;
1912#endif
1913#if EV_USE_IOCP
1914 OVERLAPPED or, ow;
508#endif 1915#endif
509} ANFD; 1916} ANFD;
510 1917
511/* stores the pending event set for a given watcher */ 1918/* stores the pending event set for a given watcher */
512typedef struct 1919typedef struct
… …
554 #undef VAR 1961 #undef VAR
555 }; 1962 };
556 #include "ev_wrap.h" 1963 #include "ev_wrap.h"
557 1964
558 static struct ev_loop default_loop_struct; 1965 static struct ev_loop default_loop_struct;
559 struct ev_loop *ev_default_loop_ptr; 1966 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
560 1967
561#else 1968#else
562 1969
563 ev_tstamp ev_rt_now; 1970 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
564 #define VAR(name,decl) static decl; 1971 #define VAR(name,decl) static decl;
565 #include "ev_vars.h" 1972 #include "ev_vars.h"
566 #undef VAR 1973 #undef VAR
567 1974
568 static int ev_default_loop_ptr; 1975 static int ev_default_loop_ptr;
569 1976
570#endif 1977#endif
571 1978
572#if EV_MINIMAL < 2 1979#if EV_FEATURE_API
573# define EV_SUSPEND_CB if (expect_false (suspend_cb)) suspend_cb (EV_A)
574# define EV_RESUME_CB if (expect_false (resume_cb )) resume_cb (EV_A) 1980# define EV_RELEASE_CB if (ecb_expect_false (release_cb)) release_cb (EV_A)
1981# define EV_ACQUIRE_CB if (ecb_expect_false (acquire_cb)) acquire_cb (EV_A)
575# define EV_INVOKE_PENDING invoke_cb (EV_A) 1982# define EV_INVOKE_PENDING invoke_cb (EV_A)
576#else 1983#else
577# define EV_SUSPEND_CB (void)0
578# define EV_RESUME_CB (void)0 1984# define EV_RELEASE_CB (void)0
1985# define EV_ACQUIRE_CB (void)0
579# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1986# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
580#endif 1987#endif
1988
1989#define EVBREAK_RECURSE 0x80
581 1990
582/*****************************************************************************/ 1991/*****************************************************************************/
583 1992
584#ifndef EV_HAVE_EV_TIME 1993#ifndef EV_HAVE_EV_TIME
585ev_tstamp 1994ev_tstamp
586ev_time (void) 1995ev_time (void) EV_NOEXCEPT
587{ 1996{
588#if EV_USE_REALTIME 1997#if EV_USE_REALTIME
589 if (expect_true (have_realtime)) 1998 if (ecb_expect_true (have_realtime))
590 { 1999 {
591 struct timespec ts; 2000 struct timespec ts;
592 clock_gettime (CLOCK_REALTIME, &ts); 2001 clock_gettime (CLOCK_REALTIME, &ts);
593 return ts.tv_sec + ts.tv_nsec * 1e-9; 2002 return EV_TS_GET (ts);
594 } 2003 }
595#endif 2004#endif
596 2005
597 struct timeval tv; 2006 struct timeval tv;
598 gettimeofday (&tv, 0); 2007 gettimeofday (&tv, 0);
599 return tv.tv_sec + tv.tv_usec * 1e-6; 2008 return EV_TV_GET (tv);
600} 2009}
601#endif 2010#endif
602 2011
603inline_size ev_tstamp 2012inline_size ev_tstamp
604get_clock (void) 2013get_clock (void)
605{ 2014{
606#if EV_USE_MONOTONIC 2015#if EV_USE_MONOTONIC
607 if (expect_true (have_monotonic)) 2016 if (ecb_expect_true (have_monotonic))
608 { 2017 {
609 struct timespec ts; 2018 struct timespec ts;
610 clock_gettime (CLOCK_MONOTONIC, &ts); 2019 clock_gettime (CLOCK_MONOTONIC, &ts);
611 return ts.tv_sec + ts.tv_nsec * 1e-9; 2020 return EV_TS_GET (ts);
612 } 2021 }
613#endif 2022#endif
614 2023
615 return ev_time (); 2024 return ev_time ();
616} 2025}
617 2026
618#if EV_MULTIPLICITY 2027#if EV_MULTIPLICITY
619ev_tstamp 2028ev_tstamp
620ev_now (EV_P) 2029ev_now (EV_P) EV_NOEXCEPT
621{ 2030{
622 return ev_rt_now; 2031 return ev_rt_now;
623} 2032}
624#endif 2033#endif
625 2034
626void 2035void
627ev_sleep (ev_tstamp delay) 2036ev_sleep (ev_tstamp delay) EV_NOEXCEPT
628{ 2037{
629 if (delay > 0.) 2038 if (delay > 0.)
630 { 2039 {
631#if EV_USE_NANOSLEEP 2040#if EV_USE_NANOSLEEP
632 struct timespec ts; 2041 struct timespec ts;
633 2042
634 ts.tv_sec = (time_t)delay; 2043 EV_TS_SET (ts, delay);
635 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
636
637 nanosleep (&ts, 0); 2044 nanosleep (&ts, 0);
638#elif defined(_WIN32) 2045#elif defined _WIN32
2046 /* maybe this should round up, as ms is very low resolution */
2047 /* compared to select (µs) or nanosleep (ns) */
639 Sleep ((unsigned long)(delay * 1e3)); 2048 Sleep ((unsigned long)(EV_TS_TO_MS (delay)));
640#else 2049#else
641 struct timeval tv; 2050 struct timeval tv;
642 2051
643 tv.tv_sec = (time_t)delay;
644 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
645
646 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 2052 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
647 /* somehting not guaranteed by newer posix versions, but guaranteed */ 2053 /* something not guaranteed by newer posix versions, but guaranteed */
648 /* by older ones */ 2054 /* by older ones */
2055 EV_TV_SET (tv, delay);
649 select (0, 0, 0, 0, &tv); 2056 select (0, 0, 0, 0, &tv);
650#endif 2057#endif
651 } 2058 }
652} 2059}
653 2060
654/*****************************************************************************/ 2061/*****************************************************************************/
655 2062
656#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 2063#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
657 2064
658/* find a suitable new size for the given array, */ 2065/* find a suitable new size for the given array, */
659/* hopefully by rounding to a ncie-to-malloc size */ 2066/* hopefully by rounding to a nice-to-malloc size */
660inline_size int 2067inline_size int
661array_nextsize (int elem, int cur, int cnt) 2068array_nextsize (int elem, int cur, int cnt)
662{ 2069{
663 int ncur = cur + 1; 2070 int ncur = cur + 1;
664 2071
665 do 2072 do
666 ncur <<= 1; 2073 ncur <<= 1;
667 while (cnt > ncur); 2074 while (cnt > ncur);
668 2075
669 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 2076 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
670 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 2077 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
671 { 2078 {
672 ncur *= elem; 2079 ncur *= elem;
673 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 2080 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
674 ncur = ncur - sizeof (void *) * 4; 2081 ncur = ncur - sizeof (void *) * 4;
… …
676 } 2083 }
677 2084
678 return ncur; 2085 return ncur;
679} 2086}
680 2087
681static noinline void * 2088ecb_noinline ecb_cold
2089static void *
682array_realloc (int elem, void *base, int *cur, int cnt) 2090array_realloc (int elem, void *base, int *cur, int cnt)
683{ 2091{
684 *cur = array_nextsize (elem, *cur, cnt); 2092 *cur = array_nextsize (elem, *cur, cnt);
685 return ev_realloc (base, elem * *cur); 2093 return ev_realloc (base, elem * *cur);
686} 2094}
687 2095
2096#define array_needsize_noinit(base,offset,count)
2097
688#define array_init_zero(base,count) \ 2098#define array_needsize_zerofill(base,offset,count) \
689 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 2099 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
690 2100
691#define array_needsize(type,base,cur,cnt,init) \ 2101#define array_needsize(type,base,cur,cnt,init) \
692 if (expect_false ((cnt) > (cur))) \ 2102 if (ecb_expect_false ((cnt) > (cur))) \
693 { \ 2103 { \
694 int ocur_ = (cur); \ 2104 ecb_unused int ocur_ = (cur); \
695 (base) = (type *)array_realloc \ 2105 (base) = (type *)array_realloc \
696 (sizeof (type), (base), &(cur), (cnt)); \ 2106 (sizeof (type), (base), &(cur), (cnt)); \
697 init ((base) + (ocur_), (cur) - ocur_); \ 2107 init ((base), ocur_, ((cur) - ocur_)); \
698 } 2108 }
699 2109
700#if 0 2110#if 0
701#define array_slim(type,stem) \ 2111#define array_slim(type,stem) \
702 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2112 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
… …
711 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 2121 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
712 2122
713/*****************************************************************************/ 2123/*****************************************************************************/
714 2124
715/* dummy callback for pending events */ 2125/* dummy callback for pending events */
716static void noinline 2126ecb_noinline
2127static void
717pendingcb (EV_P_ ev_prepare *w, int revents) 2128pendingcb (EV_P_ ev_prepare *w, int revents)
718{ 2129{
719} 2130}
720 2131
721void noinline 2132ecb_noinline
2133void
722ev_feed_event (EV_P_ void *w, int revents) 2134ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
723{ 2135{
724 W w_ = (W)w; 2136 W w_ = (W)w;
725 int pri = ABSPRI (w_); 2137 int pri = ABSPRI (w_);
726 2138
727 if (expect_false (w_->pending)) 2139 if (ecb_expect_false (w_->pending))
728 pendings [pri][w_->pending - 1].events |= revents; 2140 pendings [pri][w_->pending - 1].events |= revents;
729 else 2141 else
730 { 2142 {
731 w_->pending = ++pendingcnt [pri]; 2143 w_->pending = ++pendingcnt [pri];
732 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2144 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
733 pendings [pri][w_->pending - 1].w = w_; 2145 pendings [pri][w_->pending - 1].w = w_;
734 pendings [pri][w_->pending - 1].events = revents; 2146 pendings [pri][w_->pending - 1].events = revents;
735 } 2147 }
2148
2149 pendingpri = NUMPRI - 1;
736} 2150}
737 2151
738inline_speed void 2152inline_speed void
739feed_reverse (EV_P_ W w) 2153feed_reverse (EV_P_ W w)
740{ 2154{
741 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2155 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
742 rfeeds [rfeedcnt++] = w; 2156 rfeeds [rfeedcnt++] = w;
743} 2157}
744 2158
745inline_size void 2159inline_size void
746feed_reverse_done (EV_P_ int revents) 2160feed_reverse_done (EV_P_ int revents)
… …
760} 2174}
761 2175
762/*****************************************************************************/ 2176/*****************************************************************************/
763 2177
764inline_speed void 2178inline_speed void
765fd_event (EV_P_ int fd, int revents) 2179fd_event_nocheck (EV_P_ int fd, int revents)
766{ 2180{
767 ANFD *anfd = anfds + fd; 2181 ANFD *anfd = anfds + fd;
768 ev_io *w; 2182 ev_io *w;
769 2183
770 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2184 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
774 if (ev) 2188 if (ev)
775 ev_feed_event (EV_A_ (W)w, ev); 2189 ev_feed_event (EV_A_ (W)w, ev);
776 } 2190 }
777} 2191}
778 2192
779void 2193/* do not submit kernel events for fds that have reify set */
2194/* because that means they changed while we were polling for new events */
2195inline_speed void
780ev_feed_fd_event (EV_P_ int fd, int revents) 2196fd_event (EV_P_ int fd, int revents)
2197{
2198 ANFD *anfd = anfds + fd;
2199
2200 if (ecb_expect_true (!anfd->reify))
2201 fd_event_nocheck (EV_A_ fd, revents);
2202}
2203
2204void
2205ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
781{ 2206{
782 if (fd >= 0 && fd < anfdmax) 2207 if (fd >= 0 && fd < anfdmax)
783 fd_event (EV_A_ fd, revents); 2208 fd_event_nocheck (EV_A_ fd, revents);
784} 2209}
785 2210
786/* make sure the external fd watch events are in-sync */ 2211/* make sure the external fd watch events are in-sync */
787/* with the kernel/libev internal state */ 2212/* with the kernel/libev internal state */
788inline_size void 2213inline_size void
789fd_reify (EV_P) 2214fd_reify (EV_P)
790{ 2215{
791 int i; 2216 int i;
792 2217
2218#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
2219 for (i = 0; i < fdchangecnt; ++i)
2220 {
2221 int fd = fdchanges [i];
2222 ANFD *anfd = anfds + fd;
2223
2224 if (anfd->reify & EV__IOFDSET && anfd->head)
2225 {
2226 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
2227
2228 if (handle != anfd->handle)
2229 {
2230 unsigned long arg;
2231
2232 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
2233
2234 /* handle changed, but fd didn't - we need to do it in two steps */
2235 backend_modify (EV_A_ fd, anfd->events, 0);
2236 anfd->events = 0;
2237 anfd->handle = handle;
2238 }
2239 }
2240 }
2241#endif
2242
793 for (i = 0; i < fdchangecnt; ++i) 2243 for (i = 0; i < fdchangecnt; ++i)
794 { 2244 {
795 int fd = fdchanges [i]; 2245 int fd = fdchanges [i];
796 ANFD *anfd = anfds + fd; 2246 ANFD *anfd = anfds + fd;
797 ev_io *w; 2247 ev_io *w;
798 2248
799 unsigned char events = 0; 2249 unsigned char o_events = anfd->events;
2250 unsigned char o_reify = anfd->reify;
800 2251
801 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2252 anfd->reify = 0;
802 events |= (unsigned char)w->events;
803 2253
804#if EV_SELECT_IS_WINSOCKET 2254 /*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
805 if (events)
806 { 2255 {
807 unsigned long arg; 2256 anfd->events = 0;
808 #ifdef EV_FD_TO_WIN32_HANDLE 2257
809 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 2258 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
810 #else 2259 anfd->events |= (unsigned char)w->events;
811 anfd->handle = _get_osfhandle (fd); 2260
812 #endif 2261 if (o_events != anfd->events)
813 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 2262 o_reify = EV__IOFDSET; /* actually |= */
814 } 2263 }
815#endif
816 2264
817 { 2265 if (o_reify & EV__IOFDSET)
818 unsigned char o_events = anfd->events;
819 unsigned char o_reify = anfd->reify;
820
821 anfd->reify = 0;
822 anfd->events = events;
823
824 if (o_events != events || o_reify & EV__IOFDSET)
825 backend_modify (EV_A_ fd, o_events, events); 2266 backend_modify (EV_A_ fd, o_events, anfd->events);
826 }
827 } 2267 }
828 2268
829 fdchangecnt = 0; 2269 fdchangecnt = 0;
830} 2270}
831 2271
832/* something about the given fd changed */ 2272/* something about the given fd changed */
833inline_size void 2273inline_size
2274void
834fd_change (EV_P_ int fd, int flags) 2275fd_change (EV_P_ int fd, int flags)
835{ 2276{
836 unsigned char reify = anfds [fd].reify; 2277 unsigned char reify = anfds [fd].reify;
837 anfds [fd].reify |= flags; 2278 anfds [fd].reify |= flags;
838 2279
839 if (expect_true (!reify)) 2280 if (ecb_expect_true (!reify))
840 { 2281 {
841 ++fdchangecnt; 2282 ++fdchangecnt;
842 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2283 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
843 fdchanges [fdchangecnt - 1] = fd; 2284 fdchanges [fdchangecnt - 1] = fd;
844 } 2285 }
845} 2286}
846 2287
847/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2288/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
848inline_speed void 2289inline_speed ecb_cold void
849fd_kill (EV_P_ int fd) 2290fd_kill (EV_P_ int fd)
850{ 2291{
851 ev_io *w; 2292 ev_io *w;
852 2293
853 while ((w = (ev_io *)anfds [fd].head)) 2294 while ((w = (ev_io *)anfds [fd].head))
… …
855 ev_io_stop (EV_A_ w); 2296 ev_io_stop (EV_A_ w);
856 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2297 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
857 } 2298 }
858} 2299}
859 2300
860/* check whether the given fd is atcually valid, for error recovery */ 2301/* check whether the given fd is actually valid, for error recovery */
861inline_size int 2302inline_size ecb_cold int
862fd_valid (int fd) 2303fd_valid (int fd)
863{ 2304{
864#ifdef _WIN32 2305#ifdef _WIN32
865 return _get_osfhandle (fd) != -1; 2306 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
866#else 2307#else
867 return fcntl (fd, F_GETFD) != -1; 2308 return fcntl (fd, F_GETFD) != -1;
868#endif 2309#endif
869} 2310}
870 2311
871/* called on EBADF to verify fds */ 2312/* called on EBADF to verify fds */
872static void noinline 2313ecb_noinline ecb_cold
2314static void
873fd_ebadf (EV_P) 2315fd_ebadf (EV_P)
874{ 2316{
875 int fd; 2317 int fd;
876 2318
877 for (fd = 0; fd < anfdmax; ++fd) 2319 for (fd = 0; fd < anfdmax; ++fd)
… …
879 if (!fd_valid (fd) && errno == EBADF) 2321 if (!fd_valid (fd) && errno == EBADF)
880 fd_kill (EV_A_ fd); 2322 fd_kill (EV_A_ fd);
881} 2323}
882 2324
883/* called on ENOMEM in select/poll to kill some fds and retry */ 2325/* called on ENOMEM in select/poll to kill some fds and retry */
884static void noinline 2326ecb_noinline ecb_cold
2327static void
885fd_enomem (EV_P) 2328fd_enomem (EV_P)
886{ 2329{
887 int fd; 2330 int fd;
888 2331
889 for (fd = anfdmax; fd--; ) 2332 for (fd = anfdmax; fd--; )
890 if (anfds [fd].events) 2333 if (anfds [fd].events)
891 { 2334 {
892 fd_kill (EV_A_ fd); 2335 fd_kill (EV_A_ fd);
893 return; 2336 break;
894 } 2337 }
895} 2338}
896 2339
897/* usually called after fork if backend needs to re-arm all fds from scratch */ 2340/* usually called after fork if backend needs to re-arm all fds from scratch */
898static void noinline 2341ecb_noinline
2342static void
899fd_rearm_all (EV_P) 2343fd_rearm_all (EV_P)
900{ 2344{
901 int fd; 2345 int fd;
902 2346
903 for (fd = 0; fd < anfdmax; ++fd) 2347 for (fd = 0; fd < anfdmax; ++fd)
904 if (anfds [fd].events) 2348 if (anfds [fd].events)
905 { 2349 {
906 anfds [fd].events = 0; 2350 anfds [fd].events = 0;
907 anfds [fd].emask = 0; 2351 anfds [fd].emask = 0;
908 fd_change (EV_A_ fd, EV__IOFDSET | 1); 2352 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
909 } 2353 }
910} 2354}
911 2355
2356/* used to prepare libev internal fd's */
2357/* this is not fork-safe */
2358inline_speed void
2359fd_intern (int fd)
2360{
2361#ifdef _WIN32
2362 unsigned long arg = 1;
2363 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
2364#else
2365 fcntl (fd, F_SETFD, FD_CLOEXEC);
2366 fcntl (fd, F_SETFL, O_NONBLOCK);
2367#endif
2368}
2369
912/*****************************************************************************/ 2370/*****************************************************************************/
913 2371
914/* 2372/*
915 * the heap functions want a real array index. array index 0 uis guaranteed to not 2373 * the heap functions want a real array index. array index 0 is guaranteed to not
916 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 2374 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
917 * the branching factor of the d-tree. 2375 * the branching factor of the d-tree.
918 */ 2376 */
919 2377
920/* 2378/*
… …
942 ev_tstamp minat; 2400 ev_tstamp minat;
943 ANHE *minpos; 2401 ANHE *minpos;
944 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; 2402 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
945 2403
946 /* find minimum child */ 2404 /* find minimum child */
947 if (expect_true (pos + DHEAP - 1 < E)) 2405 if (ecb_expect_true (pos + DHEAP - 1 < E))
948 { 2406 {
949 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2407 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
950 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2408 if ( minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
951 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2409 if ( minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
952 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2410 if ( minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
953 } 2411 }
954 else if (pos < E) 2412 else if (pos < E)
955 { 2413 {
956 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2414 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
957 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2415 if (pos + 1 < E && minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
958 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2416 if (pos + 2 < E && minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
959 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2417 if (pos + 3 < E && minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
960 } 2418 }
961 else 2419 else
962 break; 2420 break;
963 2421
964 if (ANHE_at (he) <= minat) 2422 if (ANHE_at (he) <= minat)
… …
972 2430
973 heap [k] = he; 2431 heap [k] = he;
974 ev_active (ANHE_w (he)) = k; 2432 ev_active (ANHE_w (he)) = k;
975} 2433}
976 2434
977#else /* 4HEAP */ 2435#else /* not 4HEAP */
978 2436
979#define HEAP0 1 2437#define HEAP0 1
980#define HPARENT(k) ((k) >> 1) 2438#define HPARENT(k) ((k) >> 1)
981#define UPHEAP_DONE(p,k) (!(p)) 2439#define UPHEAP_DONE(p,k) (!(p))
982 2440
… …
988 2446
989 for (;;) 2447 for (;;)
990 { 2448 {
991 int c = k << 1; 2449 int c = k << 1;
992 2450
993 if (c > N + HEAP0 - 1) 2451 if (c >= N + HEAP0)
994 break; 2452 break;
995 2453
996 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 2454 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
997 ? 1 : 0; 2455 ? 1 : 0;
998 2456
… …
1034 2492
1035/* move an element suitably so it is in a correct place */ 2493/* move an element suitably so it is in a correct place */
1036inline_size void 2494inline_size void
1037adjustheap (ANHE *heap, int N, int k) 2495adjustheap (ANHE *heap, int N, int k)
1038{ 2496{
1039 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 2497 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1040 upheap (heap, k); 2498 upheap (heap, k);
1041 else 2499 else
1042 downheap (heap, N, k); 2500 downheap (heap, N, k);
1043} 2501}
1044 2502
… …
1057/*****************************************************************************/ 2515/*****************************************************************************/
1058 2516
1059/* associate signal watchers to a signal signal */ 2517/* associate signal watchers to a signal signal */
1060typedef struct 2518typedef struct
1061{ 2519{
2520 EV_ATOMIC_T pending;
2521#if EV_MULTIPLICITY
2522 EV_P;
2523#endif
1062 WL head; 2524 WL head;
1063 EV_ATOMIC_T gotsig;
1064} ANSIG; 2525} ANSIG;
1065 2526
1066static ANSIG *signals; 2527static ANSIG signals [EV_NSIG - 1];
1067static int signalmax;
1068
1069static EV_ATOMIC_T gotsig;
1070 2528
1071/*****************************************************************************/ 2529/*****************************************************************************/
1072 2530
1073/* used to prepare libev internal fd's */ 2531#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1074/* this is not fork-safe */ 2532
2533ecb_noinline ecb_cold
2534static void
2535evpipe_init (EV_P)
2536{
2537 if (!ev_is_active (&pipe_w))
2538 {
2539 int fds [2];
2540
2541# if EV_USE_EVENTFD
2542 fds [0] = -1;
2543 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
2544 if (fds [1] < 0 && errno == EINVAL)
2545 fds [1] = eventfd (0, 0);
2546
2547 if (fds [1] < 0)
2548# endif
2549 {
2550 while (pipe (fds))
2551 ev_syserr ("(libev) error creating signal/async pipe");
2552
2553 fd_intern (fds [0]);
2554 }
2555
2556 evpipe [0] = fds [0];
2557
2558 if (evpipe [1] < 0)
2559 evpipe [1] = fds [1]; /* first call, set write fd */
2560 else
2561 {
2562 /* on subsequent calls, do not change evpipe [1] */
2563 /* so that evpipe_write can always rely on its value. */
2564 /* this branch does not do anything sensible on windows, */
2565 /* so must not be executed on windows */
2566
2567 dup2 (fds [1], evpipe [1]);
2568 close (fds [1]);
2569 }
2570
2571 fd_intern (evpipe [1]);
2572
2573 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2574 ev_io_start (EV_A_ &pipe_w);
2575 ev_unref (EV_A); /* watcher should not keep loop alive */
2576 }
2577}
2578
1075inline_speed void 2579inline_speed void
1076fd_intern (int fd) 2580evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1077{ 2581{
1078#ifdef _WIN32 2582 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1079 unsigned long arg = 1;
1080 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1081#else
1082 fcntl (fd, F_SETFD, FD_CLOEXEC);
1083 fcntl (fd, F_SETFL, O_NONBLOCK);
1084#endif
1085}
1086 2583
1087static void noinline 2584 if (ecb_expect_true (*flag))
1088evpipe_init (EV_P) 2585 return;
1089{ 2586
1090 if (!ev_is_active (&pipe_w)) 2587 *flag = 1;
2588 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2589
2590 pipe_write_skipped = 1;
2591
2592 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2593
2594 if (pipe_write_wanted)
1091 { 2595 {
2596 int old_errno;
2597
2598 pipe_write_skipped = 0;
2599 ECB_MEMORY_FENCE_RELEASE;
2600
2601 old_errno = errno; /* save errno because write will clobber it */
2602
1092#if EV_USE_EVENTFD 2603#if EV_USE_EVENTFD
1093 if ((evfd = eventfd (0, 0)) >= 0) 2604 if (evpipe [0] < 0)
1094 { 2605 {
1095 evpipe [0] = -1; 2606 uint64_t counter = 1;
1096 fd_intern (evfd); 2607 write (evpipe [1], &counter, sizeof (uint64_t));
1097 ev_io_set (&pipe_w, evfd, EV_READ);
1098 } 2608 }
1099 else 2609 else
1100#endif 2610#endif
1101 { 2611 {
1102 while (pipe (evpipe)) 2612#ifdef _WIN32
1103 ev_syserr ("(libev) error creating signal/async pipe"); 2613 WSABUF buf;
1104 2614 DWORD sent;
1105 fd_intern (evpipe [0]); 2615 buf.buf = (char *)&buf;
1106 fd_intern (evpipe [1]); 2616 buf.len = 1;
1107 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2617 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2618#else
2619 write (evpipe [1], &(evpipe [1]), 1);
2620#endif
1108 } 2621 }
1109
1110 ev_io_start (EV_A_ &pipe_w);
1111 ev_unref (EV_A); /* watcher should not keep loop alive */
1112 }
1113}
1114
1115inline_size void
1116evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1117{
1118 if (!*flag)
1119 {
1120 int old_errno = errno; /* save errno because write might clobber it */
1121
1122 *flag = 1;
1123
1124#if EV_USE_EVENTFD
1125 if (evfd >= 0)
1126 {
1127 uint64_t counter = 1;
1128 write (evfd, &counter, sizeof (uint64_t));
1129 }
1130 else
1131#endif
1132 write (evpipe [1], &old_errno, 1);
1133 2622
1134 errno = old_errno; 2623 errno = old_errno;
1135 } 2624 }
1136} 2625}
1137 2626
1138/* called whenever the libev signal pipe */ 2627/* called whenever the libev signal pipe */
1139/* got some events (signal, async) */ 2628/* got some events (signal, async) */
1140static void 2629static void
1141pipecb (EV_P_ ev_io *iow, int revents) 2630pipecb (EV_P_ ev_io *iow, int revents)
1142{ 2631{
2632 int i;
2633
2634 if (revents & EV_READ)
2635 {
1143#if EV_USE_EVENTFD 2636#if EV_USE_EVENTFD
1144 if (evfd >= 0) 2637 if (evpipe [0] < 0)
1145 { 2638 {
1146 uint64_t counter; 2639 uint64_t counter;
1147 read (evfd, &counter, sizeof (uint64_t)); 2640 read (evpipe [1], &counter, sizeof (uint64_t));
1148 } 2641 }
1149 else 2642 else
1150#endif 2643#endif
1151 { 2644 {
1152 char dummy; 2645 char dummy[4];
2646#ifdef _WIN32
2647 WSABUF buf;
2648 DWORD recvd;
2649 DWORD flags = 0;
2650 buf.buf = dummy;
2651 buf.len = sizeof (dummy);
2652 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2653#else
1153 read (evpipe [0], &dummy, 1); 2654 read (evpipe [0], &dummy, sizeof (dummy));
2655#endif
2656 }
2657 }
2658
2659 pipe_write_skipped = 0;
2660
2661 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2662
2663#if EV_SIGNAL_ENABLE
2664 if (sig_pending)
1154 } 2665 {
2666 sig_pending = 0;
1155 2667
1156 if (gotsig && ev_is_default_loop (EV_A)) 2668 ECB_MEMORY_FENCE;
1157 {
1158 int signum;
1159 gotsig = 0;
1160 2669
1161 for (signum = signalmax; signum--; ) 2670 for (i = EV_NSIG - 1; i--; )
1162 if (signals [signum].gotsig) 2671 if (ecb_expect_false (signals [i].pending))
1163 ev_feed_signal_event (EV_A_ signum + 1); 2672 ev_feed_signal_event (EV_A_ i + 1);
1164 } 2673 }
2674#endif
1165 2675
1166#if EV_ASYNC_ENABLE 2676#if EV_ASYNC_ENABLE
1167 if (gotasync) 2677 if (async_pending)
1168 { 2678 {
1169 int i; 2679 async_pending = 0;
1170 gotasync = 0; 2680
2681 ECB_MEMORY_FENCE;
1171 2682
1172 for (i = asynccnt; i--; ) 2683 for (i = asynccnt; i--; )
1173 if (asyncs [i]->sent) 2684 if (asyncs [i]->sent)
1174 { 2685 {
1175 asyncs [i]->sent = 0; 2686 asyncs [i]->sent = 0;
2687 ECB_MEMORY_FENCE_RELEASE;
1176 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2688 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1177 } 2689 }
1178 } 2690 }
1179#endif 2691#endif
1180} 2692}
1181 2693
1182/*****************************************************************************/ 2694/*****************************************************************************/
1183 2695
2696void
2697ev_feed_signal (int signum) EV_NOEXCEPT
2698{
2699#if EV_MULTIPLICITY
2700 EV_P;
2701 ECB_MEMORY_FENCE_ACQUIRE;
2702 EV_A = signals [signum - 1].loop;
2703
2704 if (!EV_A)
2705 return;
2706#endif
2707
2708 signals [signum - 1].pending = 1;
2709 evpipe_write (EV_A_ &sig_pending);
2710}
2711
1184static void 2712static void
1185ev_sighandler (int signum) 2713ev_sighandler (int signum)
1186{ 2714{
2715#ifdef _WIN32
2716 signal (signum, ev_sighandler);
2717#endif
2718
2719 ev_feed_signal (signum);
2720}
2721
2722ecb_noinline
2723void
2724ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
2725{
2726 WL w;
2727
2728 if (ecb_expect_false (signum <= 0 || signum >= EV_NSIG))
2729 return;
2730
2731 --signum;
2732
1187#if EV_MULTIPLICITY 2733#if EV_MULTIPLICITY
1188 struct ev_loop *loop = &default_loop_struct; 2734 /* it is permissible to try to feed a signal to the wrong loop */
1189#endif 2735 /* or, likely more useful, feeding a signal nobody is waiting for */
1190 2736
1191#if _WIN32 2737 if (ecb_expect_false (signals [signum].loop != EV_A))
1192 signal (signum, ev_sighandler);
1193#endif
1194
1195 signals [signum - 1].gotsig = 1;
1196 evpipe_write (EV_A_ &gotsig);
1197}
1198
1199void noinline
1200ev_feed_signal_event (EV_P_ int signum)
1201{
1202 WL w;
1203
1204#if EV_MULTIPLICITY
1205 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1206#endif
1207
1208 --signum;
1209
1210 if (signum < 0 || signum >= signalmax)
1211 return; 2738 return;
2739#endif
1212 2740
1213 signals [signum].gotsig = 0; 2741 signals [signum].pending = 0;
2742 ECB_MEMORY_FENCE_RELEASE;
1214 2743
1215 for (w = signals [signum].head; w; w = w->next) 2744 for (w = signals [signum].head; w; w = w->next)
1216 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2745 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1217} 2746}
1218 2747
2748#if EV_USE_SIGNALFD
2749static void
2750sigfdcb (EV_P_ ev_io *iow, int revents)
2751{
2752 struct signalfd_siginfo si[2], *sip; /* these structs are big */
2753
2754 for (;;)
2755 {
2756 ssize_t res = read (sigfd, si, sizeof (si));
2757
2758 /* not ISO-C, as res might be -1, but works with SuS */
2759 for (sip = si; (char *)sip < (char *)si + res; ++sip)
2760 ev_feed_signal_event (EV_A_ sip->ssi_signo);
2761
2762 if (res < (ssize_t)sizeof (si))
2763 break;
2764 }
2765}
2766#endif
2767
2768#endif
2769
1219/*****************************************************************************/ 2770/*****************************************************************************/
1220 2771
2772#if EV_CHILD_ENABLE
1221static WL childs [EV_PID_HASHSIZE]; 2773static WL childs [EV_PID_HASHSIZE];
1222
1223#ifndef _WIN32
1224 2774
1225static ev_signal childev; 2775static ev_signal childev;
1226 2776
1227#ifndef WIFCONTINUED 2777#ifndef WIFCONTINUED
1228# define WIFCONTINUED(status) 0 2778# define WIFCONTINUED(status) 0
… …
1233child_reap (EV_P_ int chain, int pid, int status) 2783child_reap (EV_P_ int chain, int pid, int status)
1234{ 2784{
1235 ev_child *w; 2785 ev_child *w;
1236 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2786 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1237 2787
1238 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2788 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1239 { 2789 {
1240 if ((w->pid == pid || !w->pid) 2790 if ((w->pid == pid || !w->pid)
1241 && (!traced || (w->flags & 1))) 2791 && (!traced || (w->flags & 1)))
1242 { 2792 {
1243 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2793 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1268 /* make sure we are called again until all children have been reaped */ 2818 /* make sure we are called again until all children have been reaped */
1269 /* we need to do it this way so that the callback gets called before we continue */ 2819 /* we need to do it this way so that the callback gets called before we continue */
1270 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2820 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1271 2821
1272 child_reap (EV_A_ pid, pid, status); 2822 child_reap (EV_A_ pid, pid, status);
1273 if (EV_PID_HASHSIZE > 1) 2823 if ((EV_PID_HASHSIZE) > 1)
1274 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2824 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1275} 2825}
1276 2826
1277#endif 2827#endif
1278 2828
1279/*****************************************************************************/ 2829/*****************************************************************************/
1280 2830
2831#if EV_USE_IOCP
2832# include "ev_iocp.c"
2833#endif
1281#if EV_USE_PORT 2834#if EV_USE_PORT
1282# include "ev_port.c" 2835# include "ev_port.c"
1283#endif 2836#endif
1284#if EV_USE_KQUEUE 2837#if EV_USE_KQUEUE
1285# include "ev_kqueue.c" 2838# include "ev_kqueue.c"
1286#endif 2839#endif
1287#if EV_USE_EPOLL 2840#if EV_USE_EPOLL
1288# include "ev_epoll.c" 2841# include "ev_epoll.c"
1289#endif 2842#endif
2843#if EV_USE_LINUXAIO
2844# include "ev_linuxaio.c"
2845#endif
2846#if EV_USE_IOURING
2847# include "ev_iouring.c"
2848#endif
1290#if EV_USE_POLL 2849#if EV_USE_POLL
1291# include "ev_poll.c" 2850# include "ev_poll.c"
1292#endif 2851#endif
1293#if EV_USE_SELECT 2852#if EV_USE_SELECT
1294# include "ev_select.c" 2853# include "ev_select.c"
1295#endif 2854#endif
1296 2855
1297int 2856ecb_cold int
1298ev_version_major (void) 2857ev_version_major (void) EV_NOEXCEPT
1299{ 2858{
1300 return EV_VERSION_MAJOR; 2859 return EV_VERSION_MAJOR;
1301} 2860}
1302 2861
1303int 2862ecb_cold int
1304ev_version_minor (void) 2863ev_version_minor (void) EV_NOEXCEPT
1305{ 2864{
1306 return EV_VERSION_MINOR; 2865 return EV_VERSION_MINOR;
1307} 2866}
1308 2867
1309/* return true if we are running with elevated privileges and should ignore env variables */ 2868/* return true if we are running with elevated privileges and should ignore env variables */
1310int inline_size 2869inline_size ecb_cold int
1311enable_secure (void) 2870enable_secure (void)
1312{ 2871{
1313#ifdef _WIN32 2872#ifdef _WIN32
1314 return 0; 2873 return 0;
1315#else 2874#else
1316 return getuid () != geteuid () 2875 return getuid () != geteuid ()
1317 || getgid () != getegid (); 2876 || getgid () != getegid ();
1318#endif 2877#endif
1319} 2878}
1320 2879
2880ecb_cold
1321unsigned int 2881unsigned int
1322ev_supported_backends (void) 2882ev_supported_backends (void) EV_NOEXCEPT
1323{ 2883{
1324 unsigned int flags = 0; 2884 unsigned int flags = 0;
1325 2885
1326 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2886 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1327 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2887 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
1328 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 2888 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2889 if (EV_USE_LINUXAIO) flags |= EVBACKEND_LINUXAIO;
2890 if (EV_USE_IOURING ) flags |= EVBACKEND_IOURING;
1329 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 2891 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
1330 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2892 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
1331 2893
1332 return flags; 2894 return flags;
1333} 2895}
1334 2896
2897ecb_cold
1335unsigned int 2898unsigned int
1336ev_recommended_backends (void) 2899ev_recommended_backends (void) EV_NOEXCEPT
1337{ 2900{
1338 unsigned int flags = ev_supported_backends (); 2901 unsigned int flags = ev_supported_backends ();
1339 2902
1340#ifndef __NetBSD__ 2903#ifndef __NetBSD__
1341 /* kqueue is borked on everything but netbsd apparently */ 2904 /* kqueue is borked on everything but netbsd apparently */
… …
1345#ifdef __APPLE__ 2908#ifdef __APPLE__
1346 /* only select works correctly on that "unix-certified" platform */ 2909 /* only select works correctly on that "unix-certified" platform */
1347 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2910 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1348 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 2911 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1349#endif 2912#endif
2913#ifdef __FreeBSD__
2914 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2915#endif
2916
2917 /* TODO: linuxaio is very experimental */
2918#if !EV_RECOMMEND_LINUXAIO
2919 flags &= ~EVBACKEND_LINUXAIO;
2920#endif
2921 /* TODO: linuxaio is super experimental */
2922#if !EV_RECOMMEND_IOURING
2923 flags &= ~EVBACKEND_IOURING;
2924#endif
1350 2925
1351 return flags; 2926 return flags;
1352} 2927}
1353 2928
2929ecb_cold
1354unsigned int 2930unsigned int
1355ev_embeddable_backends (void) 2931ev_embeddable_backends (void) EV_NOEXCEPT
1356{ 2932{
1357 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2933 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1358 2934
1359 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2935 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1360 /* please fix it and tell me how to detect the fix */ 2936 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1361 flags &= ~EVBACKEND_EPOLL; 2937 flags &= ~EVBACKEND_EPOLL;
2938
2939 /* EVBACKEND_LINUXAIO is theoretically embeddable, but suffers from a performance overhead */
2940
2941 /* EVBACKEND_IOURING is practically embeddable, but the current implementation is not
2942 * because our backend_fd is the epoll fd we need as fallback.
2943 * if the kernel ever is fixed, this might change...
2944 */
1362 2945
1363 return flags; 2946 return flags;
1364} 2947}
1365 2948
1366unsigned int 2949unsigned int
1367ev_backend (EV_P) 2950ev_backend (EV_P) EV_NOEXCEPT
1368{ 2951{
1369 return backend; 2952 return backend;
1370} 2953}
1371 2954
1372#if EV_MINIMAL < 2 2955#if EV_FEATURE_API
1373unsigned int 2956unsigned int
1374ev_loop_count (EV_P) 2957ev_iteration (EV_P) EV_NOEXCEPT
1375{ 2958{
1376 return loop_count; 2959 return loop_count;
1377} 2960}
1378 2961
1379unsigned int 2962unsigned int
1380ev_loop_depth (EV_P) 2963ev_depth (EV_P) EV_NOEXCEPT
1381{ 2964{
1382 return loop_depth; 2965 return loop_depth;
1383} 2966}
1384 2967
1385void 2968void
1386ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2969ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1387{ 2970{
1388 io_blocktime = interval; 2971 io_blocktime = interval;
1389} 2972}
1390 2973
1391void 2974void
1392ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2975ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1393{ 2976{
1394 timeout_blocktime = interval; 2977 timeout_blocktime = interval;
1395} 2978}
1396 2979
1397void 2980void
1398ev_set_userdata (EV_P_ void *data) 2981ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
1399{ 2982{
1400 userdata = data; 2983 userdata = data;
1401} 2984}
1402 2985
1403void * 2986void *
1404ev_userdata (EV_P) 2987ev_userdata (EV_P) EV_NOEXCEPT
1405{ 2988{
1406 return userdata; 2989 return userdata;
1407} 2990}
1408 2991
2992void
1409void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2993ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
1410{ 2994{
1411 invoke_cb = invoke_pending_cb; 2995 invoke_cb = invoke_pending_cb;
1412} 2996}
1413 2997
1414void ev_set_blocking_cb (EV_P_ void (*suspend_cb_)(EV_P), void (*resume_cb_)(EV_P)) 2998void
2999ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
1415{ 3000{
1416 suspend_cb = suspend_cb_; 3001 release_cb = release;
1417 resume_cb = resume_cb_; 3002 acquire_cb = acquire;
1418} 3003}
1419#endif 3004#endif
1420 3005
1421/* initialise a loop structure, must be zero-initialised */ 3006/* initialise a loop structure, must be zero-initialised */
1422static void noinline 3007ecb_noinline ecb_cold
3008static void
1423loop_init (EV_P_ unsigned int flags) 3009loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
1424{ 3010{
1425 if (!backend) 3011 if (!backend)
1426 { 3012 {
3013 origflags = flags;
3014
1427#if EV_USE_REALTIME 3015#if EV_USE_REALTIME
1428 if (!have_realtime) 3016 if (!have_realtime)
1429 { 3017 {
1430 struct timespec ts; 3018 struct timespec ts;
1431 3019
… …
1442 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 3030 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1443 have_monotonic = 1; 3031 have_monotonic = 1;
1444 } 3032 }
1445#endif 3033#endif
1446 3034
1447 ev_rt_now = ev_time ();
1448 mn_now = get_clock ();
1449 now_floor = mn_now;
1450 rtmn_diff = ev_rt_now - mn_now;
1451#if EV_MINIMAL < 2
1452 invoke_cb = ev_invoke_pending;
1453#endif
1454
1455 io_blocktime = 0.;
1456 timeout_blocktime = 0.;
1457 backend = 0;
1458 backend_fd = -1;
1459 gotasync = 0;
1460#if EV_USE_INOTIFY
1461 fs_fd = -2;
1462#endif
1463
1464 /* pid check not overridable via env */ 3035 /* pid check not overridable via env */
1465#ifndef _WIN32 3036#ifndef _WIN32
1466 if (flags & EVFLAG_FORKCHECK) 3037 if (flags & EVFLAG_FORKCHECK)
1467 curpid = getpid (); 3038 curpid = getpid ();
1468#endif 3039#endif
… …
1470 if (!(flags & EVFLAG_NOENV) 3041 if (!(flags & EVFLAG_NOENV)
1471 && !enable_secure () 3042 && !enable_secure ()
1472 && getenv ("LIBEV_FLAGS")) 3043 && getenv ("LIBEV_FLAGS"))
1473 flags = atoi (getenv ("LIBEV_FLAGS")); 3044 flags = atoi (getenv ("LIBEV_FLAGS"));
1474 3045
1475 if (!(flags & 0x0000ffffU)) 3046 ev_rt_now = ev_time ();
3047 mn_now = get_clock ();
3048 now_floor = mn_now;
3049 rtmn_diff = ev_rt_now - mn_now;
3050#if EV_FEATURE_API
3051 invoke_cb = ev_invoke_pending;
3052#endif
3053
3054 io_blocktime = 0.;
3055 timeout_blocktime = 0.;
3056 backend = 0;
3057 backend_fd = -1;
3058 sig_pending = 0;
3059#if EV_ASYNC_ENABLE
3060 async_pending = 0;
3061#endif
3062 pipe_write_skipped = 0;
3063 pipe_write_wanted = 0;
3064 evpipe [0] = -1;
3065 evpipe [1] = -1;
3066#if EV_USE_INOTIFY
3067 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
3068#endif
3069#if EV_USE_SIGNALFD
3070 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
3071#endif
3072
3073 if (!(flags & EVBACKEND_MASK))
1476 flags |= ev_recommended_backends (); 3074 flags |= ev_recommended_backends ();
1477 3075
3076#if EV_USE_IOCP
3077 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
3078#endif
1478#if EV_USE_PORT 3079#if EV_USE_PORT
1479 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 3080 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1480#endif 3081#endif
1481#if EV_USE_KQUEUE 3082#if EV_USE_KQUEUE
1482 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 3083 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
3084#endif
3085#if EV_USE_IOURING
3086 if (!backend && (flags & EVBACKEND_IOURING )) backend = iouring_init (EV_A_ flags);
3087#endif
3088#if EV_USE_LINUXAIO
3089 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
1483#endif 3090#endif
1484#if EV_USE_EPOLL 3091#if EV_USE_EPOLL
1485 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 3092 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
1486#endif 3093#endif
1487#if EV_USE_POLL 3094#if EV_USE_POLL
1488 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 3095 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
1489#endif 3096#endif
1490#if EV_USE_SELECT 3097#if EV_USE_SELECT
1491 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 3098 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
1492#endif 3099#endif
1493 3100
1494 ev_prepare_init (&pending_w, pendingcb); 3101 ev_prepare_init (&pending_w, pendingcb);
1495 3102
3103#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1496 ev_init (&pipe_w, pipecb); 3104 ev_init (&pipe_w, pipecb);
1497 ev_set_priority (&pipe_w, EV_MAXPRI); 3105 ev_set_priority (&pipe_w, EV_MAXPRI);
3106#endif
1498 } 3107 }
1499} 3108}
1500 3109
1501/* free up a loop structure */ 3110/* free up a loop structure */
1502static void noinline 3111ecb_cold
3112void
1503loop_destroy (EV_P) 3113ev_loop_destroy (EV_P)
1504{ 3114{
1505 int i; 3115 int i;
1506 3116
3117#if EV_MULTIPLICITY
3118 /* mimic free (0) */
3119 if (!EV_A)
3120 return;
3121#endif
3122
3123#if EV_CLEANUP_ENABLE
3124 /* queue cleanup watchers (and execute them) */
3125 if (ecb_expect_false (cleanupcnt))
3126 {
3127 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
3128 EV_INVOKE_PENDING;
3129 }
3130#endif
3131
3132#if EV_CHILD_ENABLE
3133 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
3134 {
3135 ev_ref (EV_A); /* child watcher */
3136 ev_signal_stop (EV_A_ &childev);
3137 }
3138#endif
3139
1507 if (ev_is_active (&pipe_w)) 3140 if (ev_is_active (&pipe_w))
1508 { 3141 {
1509 ev_ref (EV_A); /* signal watcher */ 3142 /*ev_ref (EV_A);*/
1510 ev_io_stop (EV_A_ &pipe_w); 3143 /*ev_io_stop (EV_A_ &pipe_w);*/
1511 3144
3145 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
3146 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
3147 }
3148
1512#if EV_USE_EVENTFD 3149#if EV_USE_SIGNALFD
1513 if (evfd >= 0) 3150 if (ev_is_active (&sigfd_w))
1514 close (evfd); 3151 close (sigfd);
1515#endif 3152#endif
1516
1517 if (evpipe [0] >= 0)
1518 {
1519 close (evpipe [0]);
1520 close (evpipe [1]);
1521 }
1522 }
1523 3153
1524#if EV_USE_INOTIFY 3154#if EV_USE_INOTIFY
1525 if (fs_fd >= 0) 3155 if (fs_fd >= 0)
1526 close (fs_fd); 3156 close (fs_fd);
1527#endif 3157#endif
1528 3158
1529 if (backend_fd >= 0) 3159 if (backend_fd >= 0)
1530 close (backend_fd); 3160 close (backend_fd);
1531 3161
3162#if EV_USE_IOCP
3163 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
3164#endif
1532#if EV_USE_PORT 3165#if EV_USE_PORT
1533 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3166 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1534#endif 3167#endif
1535#if EV_USE_KQUEUE 3168#if EV_USE_KQUEUE
1536 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3169 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
3170#endif
3171#if EV_USE_IOURING
3172 if (backend == EVBACKEND_IOURING ) iouring_destroy (EV_A);
3173#endif
3174#if EV_USE_LINUXAIO
3175 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
1537#endif 3176#endif
1538#if EV_USE_EPOLL 3177#if EV_USE_EPOLL
1539 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3178 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
1540#endif 3179#endif
1541#if EV_USE_POLL 3180#if EV_USE_POLL
1542 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3181 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
1543#endif 3182#endif
1544#if EV_USE_SELECT 3183#if EV_USE_SELECT
1545 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3184 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
1546#endif 3185#endif
1547 3186
1548 for (i = NUMPRI; i--; ) 3187 for (i = NUMPRI; i--; )
1549 { 3188 {
1550 array_free (pending, [i]); 3189 array_free (pending, [i]);
1551#if EV_IDLE_ENABLE 3190#if EV_IDLE_ENABLE
1552 array_free (idle, [i]); 3191 array_free (idle, [i]);
1553#endif 3192#endif
1554 } 3193 }
1555 3194
1556 ev_free (anfds); anfdmax = 0; 3195 ev_free (anfds); anfds = 0; anfdmax = 0;
1557 3196
1558 /* have to use the microsoft-never-gets-it-right macro */ 3197 /* have to use the microsoft-never-gets-it-right macro */
1559 array_free (rfeed, EMPTY); 3198 array_free (rfeed, EMPTY);
1560 array_free (fdchange, EMPTY); 3199 array_free (fdchange, EMPTY);
1561 array_free (timer, EMPTY); 3200 array_free (timer, EMPTY);
… …
1563 array_free (periodic, EMPTY); 3202 array_free (periodic, EMPTY);
1564#endif 3203#endif
1565#if EV_FORK_ENABLE 3204#if EV_FORK_ENABLE
1566 array_free (fork, EMPTY); 3205 array_free (fork, EMPTY);
1567#endif 3206#endif
3207#if EV_CLEANUP_ENABLE
3208 array_free (cleanup, EMPTY);
3209#endif
1568 array_free (prepare, EMPTY); 3210 array_free (prepare, EMPTY);
1569 array_free (check, EMPTY); 3211 array_free (check, EMPTY);
1570#if EV_ASYNC_ENABLE 3212#if EV_ASYNC_ENABLE
1571 array_free (async, EMPTY); 3213 array_free (async, EMPTY);
1572#endif 3214#endif
1573 3215
1574 backend = 0; 3216 backend = 0;
3217
3218#if EV_MULTIPLICITY
3219 if (ev_is_default_loop (EV_A))
3220#endif
3221 ev_default_loop_ptr = 0;
3222#if EV_MULTIPLICITY
3223 else
3224 ev_free (EV_A);
3225#endif
1575} 3226}
1576 3227
1577#if EV_USE_INOTIFY 3228#if EV_USE_INOTIFY
1578inline_size void infy_fork (EV_P); 3229inline_size void infy_fork (EV_P);
1579#endif 3230#endif
1580 3231
1581inline_size void 3232inline_size void
1582loop_fork (EV_P) 3233loop_fork (EV_P)
1583{ 3234{
1584#if EV_USE_PORT 3235#if EV_USE_PORT
1585 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3236 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1586#endif 3237#endif
1587#if EV_USE_KQUEUE 3238#if EV_USE_KQUEUE
1588 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 3239 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
3240#endif
3241#if EV_USE_IOURING
3242 if (backend == EVBACKEND_IOURING ) iouring_fork (EV_A);
3243#endif
3244#if EV_USE_LINUXAIO
3245 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
1589#endif 3246#endif
1590#if EV_USE_EPOLL 3247#if EV_USE_EPOLL
1591 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3248 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
1592#endif 3249#endif
1593#if EV_USE_INOTIFY 3250#if EV_USE_INOTIFY
1594 infy_fork (EV_A); 3251 infy_fork (EV_A);
1595#endif 3252#endif
1596 3253
3254#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1597 if (ev_is_active (&pipe_w)) 3255 if (ev_is_active (&pipe_w) && postfork != 2)
1598 { 3256 {
1599 /* this "locks" the handlers against writing to the pipe */ 3257 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1600 /* while we modify the fd vars */
1601 gotsig = 1;
1602#if EV_ASYNC_ENABLE
1603 gotasync = 1;
1604#endif
1605 3258
1606 ev_ref (EV_A); 3259 ev_ref (EV_A);
1607 ev_io_stop (EV_A_ &pipe_w); 3260 ev_io_stop (EV_A_ &pipe_w);
1608 3261
1609#if EV_USE_EVENTFD
1610 if (evfd >= 0)
1611 close (evfd);
1612#endif
1613
1614 if (evpipe [0] >= 0) 3262 if (evpipe [0] >= 0)
1615 { 3263 EV_WIN32_CLOSE_FD (evpipe [0]);
1616 close (evpipe [0]);
1617 close (evpipe [1]);
1618 }
1619 3264
1620 evpipe_init (EV_A); 3265 evpipe_init (EV_A);
1621 /* now iterate over everything, in case we missed something */ 3266 /* iterate over everything, in case we missed something before */
1622 pipecb (EV_A_ &pipe_w, EV_READ); 3267 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1623 } 3268 }
3269#endif
1624 3270
1625 postfork = 0; 3271 postfork = 0;
1626} 3272}
1627 3273
1628#if EV_MULTIPLICITY 3274#if EV_MULTIPLICITY
1629 3275
3276ecb_cold
1630struct ev_loop * 3277struct ev_loop *
1631ev_loop_new (unsigned int flags) 3278ev_loop_new (unsigned int flags) EV_NOEXCEPT
1632{ 3279{
1633 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3280 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1634 3281
1635 memset (loop, 0, sizeof (struct ev_loop)); 3282 memset (EV_A, 0, sizeof (struct ev_loop));
1636
1637 loop_init (EV_A_ flags); 3283 loop_init (EV_A_ flags);
1638 3284
1639 if (ev_backend (EV_A)) 3285 if (ev_backend (EV_A))
1640 return loop; 3286 return EV_A;
1641 3287
3288 ev_free (EV_A);
1642 return 0; 3289 return 0;
1643} 3290}
1644 3291
1645void
1646ev_loop_destroy (EV_P)
1647{
1648 loop_destroy (EV_A);
1649 ev_free (loop);
1650}
1651
1652void
1653ev_loop_fork (EV_P)
1654{
1655 postfork = 1; /* must be in line with ev_default_fork */
1656}
1657#endif /* multiplicity */ 3292#endif /* multiplicity */
1658 3293
1659#if EV_VERIFY 3294#if EV_VERIFY
1660static void noinline 3295ecb_noinline ecb_cold
3296static void
1661verify_watcher (EV_P_ W w) 3297verify_watcher (EV_P_ W w)
1662{ 3298{
1663 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3299 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1664 3300
1665 if (w->pending) 3301 if (w->pending)
1666 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3302 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1667} 3303}
1668 3304
1669static void noinline 3305ecb_noinline ecb_cold
3306static void
1670verify_heap (EV_P_ ANHE *heap, int N) 3307verify_heap (EV_P_ ANHE *heap, int N)
1671{ 3308{
1672 int i; 3309 int i;
1673 3310
1674 for (i = HEAP0; i < N + HEAP0; ++i) 3311 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1679 3316
1680 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3317 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1681 } 3318 }
1682} 3319}
1683 3320
1684static void noinline 3321ecb_noinline ecb_cold
3322static void
1685array_verify (EV_P_ W *ws, int cnt) 3323array_verify (EV_P_ W *ws, int cnt)
1686{ 3324{
1687 while (cnt--) 3325 while (cnt--)
1688 { 3326 {
1689 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3327 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1690 verify_watcher (EV_A_ ws [cnt]); 3328 verify_watcher (EV_A_ ws [cnt]);
1691 } 3329 }
1692} 3330}
1693#endif 3331#endif
1694 3332
1695#if EV_MINIMAL < 2 3333#if EV_FEATURE_API
1696void 3334void ecb_cold
1697ev_loop_verify (EV_P) 3335ev_verify (EV_P) EV_NOEXCEPT
1698{ 3336{
1699#if EV_VERIFY 3337#if EV_VERIFY
1700 int i; 3338 int i;
1701 WL w; 3339 WL w, w2;
1702 3340
1703 assert (activecnt >= -1); 3341 assert (activecnt >= -1);
1704 3342
1705 assert (fdchangemax >= fdchangecnt); 3343 assert (fdchangemax >= fdchangecnt);
1706 for (i = 0; i < fdchangecnt; ++i) 3344 for (i = 0; i < fdchangecnt; ++i)
1707 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3345 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1708 3346
1709 assert (anfdmax >= 0); 3347 assert (anfdmax >= 0);
1710 for (i = 0; i < anfdmax; ++i) 3348 for (i = 0; i < anfdmax; ++i)
3349 {
3350 int j = 0;
3351
1711 for (w = anfds [i].head; w; w = w->next) 3352 for (w = w2 = anfds [i].head; w; w = w->next)
1712 { 3353 {
1713 verify_watcher (EV_A_ (W)w); 3354 verify_watcher (EV_A_ (W)w);
3355
3356 if (j++ & 1)
3357 {
3358 assert (("libev: io watcher list contains a loop", w != w2));
3359 w2 = w2->next;
3360 }
3361
1714 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3362 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1715 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 3363 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1716 } 3364 }
3365 }
1717 3366
1718 assert (timermax >= timercnt); 3367 assert (timermax >= timercnt);
1719 verify_heap (EV_A_ timers, timercnt); 3368 verify_heap (EV_A_ timers, timercnt);
1720 3369
1721#if EV_PERIODIC_ENABLE 3370#if EV_PERIODIC_ENABLE
… …
1736#if EV_FORK_ENABLE 3385#if EV_FORK_ENABLE
1737 assert (forkmax >= forkcnt); 3386 assert (forkmax >= forkcnt);
1738 array_verify (EV_A_ (W *)forks, forkcnt); 3387 array_verify (EV_A_ (W *)forks, forkcnt);
1739#endif 3388#endif
1740 3389
3390#if EV_CLEANUP_ENABLE
3391 assert (cleanupmax >= cleanupcnt);
3392 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
3393#endif
3394
1741#if EV_ASYNC_ENABLE 3395#if EV_ASYNC_ENABLE
1742 assert (asyncmax >= asynccnt); 3396 assert (asyncmax >= asynccnt);
1743 array_verify (EV_A_ (W *)asyncs, asynccnt); 3397 array_verify (EV_A_ (W *)asyncs, asynccnt);
1744#endif 3398#endif
1745 3399
3400#if EV_PREPARE_ENABLE
1746 assert (preparemax >= preparecnt); 3401 assert (preparemax >= preparecnt);
1747 array_verify (EV_A_ (W *)prepares, preparecnt); 3402 array_verify (EV_A_ (W *)prepares, preparecnt);
3403#endif
1748 3404
3405#if EV_CHECK_ENABLE
1749 assert (checkmax >= checkcnt); 3406 assert (checkmax >= checkcnt);
1750 array_verify (EV_A_ (W *)checks, checkcnt); 3407 array_verify (EV_A_ (W *)checks, checkcnt);
3408#endif
1751 3409
1752# if 0 3410# if 0
3411#if EV_CHILD_ENABLE
1753 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 3412 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1754 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 3413 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
3414#endif
1755# endif 3415# endif
1756#endif 3416#endif
1757} 3417}
1758#endif 3418#endif
1759 3419
1760#if EV_MULTIPLICITY 3420#if EV_MULTIPLICITY
3421ecb_cold
1761struct ev_loop * 3422struct ev_loop *
1762ev_default_loop_init (unsigned int flags)
1763#else 3423#else
1764int 3424int
3425#endif
1765ev_default_loop (unsigned int flags) 3426ev_default_loop (unsigned int flags) EV_NOEXCEPT
1766#endif
1767{ 3427{
1768 if (!ev_default_loop_ptr) 3428 if (!ev_default_loop_ptr)
1769 { 3429 {
1770#if EV_MULTIPLICITY 3430#if EV_MULTIPLICITY
1771 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 3431 EV_P = ev_default_loop_ptr = &default_loop_struct;
1772#else 3432#else
1773 ev_default_loop_ptr = 1; 3433 ev_default_loop_ptr = 1;
1774#endif 3434#endif
1775 3435
1776 loop_init (EV_A_ flags); 3436 loop_init (EV_A_ flags);
1777 3437
1778 if (ev_backend (EV_A)) 3438 if (ev_backend (EV_A))
1779 { 3439 {
1780#ifndef _WIN32 3440#if EV_CHILD_ENABLE
1781 ev_signal_init (&childev, childcb, SIGCHLD); 3441 ev_signal_init (&childev, childcb, SIGCHLD);
1782 ev_set_priority (&childev, EV_MAXPRI); 3442 ev_set_priority (&childev, EV_MAXPRI);
1783 ev_signal_start (EV_A_ &childev); 3443 ev_signal_start (EV_A_ &childev);
1784 ev_unref (EV_A); /* child watcher should not keep loop alive */ 3444 ev_unref (EV_A); /* child watcher should not keep loop alive */
1785#endif 3445#endif
… …
1790 3450
1791 return ev_default_loop_ptr; 3451 return ev_default_loop_ptr;
1792} 3452}
1793 3453
1794void 3454void
1795ev_default_destroy (void) 3455ev_loop_fork (EV_P) EV_NOEXCEPT
1796{ 3456{
1797#if EV_MULTIPLICITY 3457 postfork = 1;
1798 struct ev_loop *loop = ev_default_loop_ptr;
1799#endif
1800
1801 ev_default_loop_ptr = 0;
1802
1803#ifndef _WIN32
1804 ev_ref (EV_A); /* child watcher */
1805 ev_signal_stop (EV_A_ &childev);
1806#endif
1807
1808 loop_destroy (EV_A);
1809}
1810
1811void
1812ev_default_fork (void)
1813{
1814#if EV_MULTIPLICITY
1815 struct ev_loop *loop = ev_default_loop_ptr;
1816#endif
1817
1818 postfork = 1; /* must be in line with ev_loop_fork */
1819} 3458}
1820 3459
1821/*****************************************************************************/ 3460/*****************************************************************************/
1822 3461
1823void 3462void
1824ev_invoke (EV_P_ void *w, int revents) 3463ev_invoke (EV_P_ void *w, int revents)
1825{ 3464{
1826 EV_CB_INVOKE ((W)w, revents); 3465 EV_CB_INVOKE ((W)w, revents);
1827} 3466}
1828 3467
1829void noinline 3468unsigned int
3469ev_pending_count (EV_P) EV_NOEXCEPT
3470{
3471 int pri;
3472 unsigned int count = 0;
3473
3474 for (pri = NUMPRI; pri--; )
3475 count += pendingcnt [pri];
3476
3477 return count;
3478}
3479
3480ecb_noinline
3481void
1830ev_invoke_pending (EV_P) 3482ev_invoke_pending (EV_P)
1831{ 3483{
1832 int pri; 3484 pendingpri = NUMPRI;
1833 3485
1834 for (pri = NUMPRI; pri--; ) 3486 do
3487 {
3488 --pendingpri;
3489
3490 /* pendingpri possibly gets modified in the inner loop */
1835 while (pendingcnt [pri]) 3491 while (pendingcnt [pendingpri])
1836 { 3492 {
1837 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3493 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
1838 3494
1839 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1840 /* ^ this is no longer true, as pending_w could be here */
1841
1842 p->w->pending = 0; 3495 p->w->pending = 0;
1843 EV_CB_INVOKE (p->w, p->events); 3496 EV_CB_INVOKE (p->w, p->events);
1844 EV_FREQUENT_CHECK; 3497 EV_FREQUENT_CHECK;
1845 } 3498 }
3499 }
3500 while (pendingpri);
1846} 3501}
1847 3502
1848#if EV_IDLE_ENABLE 3503#if EV_IDLE_ENABLE
1849/* make idle watchers pending. this handles the "call-idle */ 3504/* make idle watchers pending. this handles the "call-idle */
1850/* only when higher priorities are idle" logic */ 3505/* only when higher priorities are idle" logic */
1851inline_size void 3506inline_size void
1852idle_reify (EV_P) 3507idle_reify (EV_P)
1853{ 3508{
1854 if (expect_false (idleall)) 3509 if (ecb_expect_false (idleall))
1855 { 3510 {
1856 int pri; 3511 int pri;
1857 3512
1858 for (pri = NUMPRI; pri--; ) 3513 for (pri = NUMPRI; pri--; )
1859 { 3514 {
… …
1902 EV_FREQUENT_CHECK; 3557 EV_FREQUENT_CHECK;
1903 feed_reverse (EV_A_ (W)w); 3558 feed_reverse (EV_A_ (W)w);
1904 } 3559 }
1905 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 3560 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1906 3561
1907 feed_reverse_done (EV_A_ EV_TIMEOUT); 3562 feed_reverse_done (EV_A_ EV_TIMER);
1908 } 3563 }
1909} 3564}
1910 3565
1911#if EV_PERIODIC_ENABLE 3566#if EV_PERIODIC_ENABLE
3567
3568ecb_noinline
3569static void
3570periodic_recalc (EV_P_ ev_periodic *w)
3571{
3572 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3573 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3574
3575 /* the above almost always errs on the low side */
3576 while (at <= ev_rt_now)
3577 {
3578 ev_tstamp nat = at + w->interval;
3579
3580 /* when resolution fails us, we use ev_rt_now */
3581 if (ecb_expect_false (nat == at))
3582 {
3583 at = ev_rt_now;
3584 break;
3585 }
3586
3587 at = nat;
3588 }
3589
3590 ev_at (w) = at;
3591}
3592
1912/* make periodics pending */ 3593/* make periodics pending */
1913inline_size void 3594inline_size void
1914periodics_reify (EV_P) 3595periodics_reify (EV_P)
1915{ 3596{
1916 EV_FREQUENT_CHECK; 3597 EV_FREQUENT_CHECK;
1917 3598
1918 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3599 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1919 { 3600 {
1920 int feed_count = 0;
1921
1922 do 3601 do
1923 { 3602 {
1924 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3603 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
1925 3604
1926 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3605 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
1935 ANHE_at_cache (periodics [HEAP0]); 3614 ANHE_at_cache (periodics [HEAP0]);
1936 downheap (periodics, periodiccnt, HEAP0); 3615 downheap (periodics, periodiccnt, HEAP0);
1937 } 3616 }
1938 else if (w->interval) 3617 else if (w->interval)
1939 { 3618 {
1940 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3619 periodic_recalc (EV_A_ w);
1941 /* if next trigger time is not sufficiently in the future, put it there */
1942 /* this might happen because of floating point inexactness */
1943 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1944 {
1945 ev_at (w) += w->interval;
1946
1947 /* if interval is unreasonably low we might still have a time in the past */
1948 /* so correct this. this will make the periodic very inexact, but the user */
1949 /* has effectively asked to get triggered more often than possible */
1950 if (ev_at (w) < ev_rt_now)
1951 ev_at (w) = ev_rt_now;
1952 }
1953
1954 ANHE_at_cache (periodics [HEAP0]); 3620 ANHE_at_cache (periodics [HEAP0]);
1955 downheap (periodics, periodiccnt, HEAP0); 3621 downheap (periodics, periodiccnt, HEAP0);
1956 } 3622 }
1957 else 3623 else
1958 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3624 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
1965 feed_reverse_done (EV_A_ EV_PERIODIC); 3631 feed_reverse_done (EV_A_ EV_PERIODIC);
1966 } 3632 }
1967} 3633}
1968 3634
1969/* simply recalculate all periodics */ 3635/* simply recalculate all periodics */
1970/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 3636/* TODO: maybe ensure that at least one event happens when jumping forward? */
1971static void noinline 3637ecb_noinline ecb_cold
3638static void
1972periodics_reschedule (EV_P) 3639periodics_reschedule (EV_P)
1973{ 3640{
1974 int i; 3641 int i;
1975 3642
1976 /* adjust periodics after time jump */ 3643 /* adjust periodics after time jump */
… …
1979 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3646 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1980 3647
1981 if (w->reschedule_cb) 3648 if (w->reschedule_cb)
1982 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3649 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1983 else if (w->interval) 3650 else if (w->interval)
1984 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3651 periodic_recalc (EV_A_ w);
1985 3652
1986 ANHE_at_cache (periodics [i]); 3653 ANHE_at_cache (periodics [i]);
1987 } 3654 }
1988 3655
1989 reheap (periodics, periodiccnt); 3656 reheap (periodics, periodiccnt);
1990} 3657}
1991#endif 3658#endif
1992 3659
1993/* adjust all timers by a given offset */ 3660/* adjust all timers by a given offset */
1994static void noinline 3661ecb_noinline ecb_cold
3662static void
1995timers_reschedule (EV_P_ ev_tstamp adjust) 3663timers_reschedule (EV_P_ ev_tstamp adjust)
1996{ 3664{
1997 int i; 3665 int i;
1998 3666
1999 for (i = 0; i < timercnt; ++i) 3667 for (i = 0; i < timercnt; ++i)
… …
2003 ANHE_at_cache (*he); 3671 ANHE_at_cache (*he);
2004 } 3672 }
2005} 3673}
2006 3674
2007/* fetch new monotonic and realtime times from the kernel */ 3675/* fetch new monotonic and realtime times from the kernel */
2008/* also detetc if there was a timejump, and act accordingly */ 3676/* also detect if there was a timejump, and act accordingly */
2009inline_speed void 3677inline_speed void
2010time_update (EV_P_ ev_tstamp max_block) 3678time_update (EV_P_ ev_tstamp max_block)
2011{ 3679{
2012#if EV_USE_MONOTONIC 3680#if EV_USE_MONOTONIC
2013 if (expect_true (have_monotonic)) 3681 if (ecb_expect_true (have_monotonic))
2014 { 3682 {
2015 int i; 3683 int i;
2016 ev_tstamp odiff = rtmn_diff; 3684 ev_tstamp odiff = rtmn_diff;
2017 3685
2018 mn_now = get_clock (); 3686 mn_now = get_clock ();
2019 3687
2020 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3688 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
2021 /* interpolate in the meantime */ 3689 /* interpolate in the meantime */
2022 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 3690 if (ecb_expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
2023 { 3691 {
2024 ev_rt_now = rtmn_diff + mn_now; 3692 ev_rt_now = rtmn_diff + mn_now;
2025 return; 3693 return;
2026 } 3694 }
2027 3695
… …
2036 * doesn't hurt either as we only do this on time-jumps or 3704 * doesn't hurt either as we only do this on time-jumps or
2037 * in the unlikely event of having been preempted here. 3705 * in the unlikely event of having been preempted here.
2038 */ 3706 */
2039 for (i = 4; --i; ) 3707 for (i = 4; --i; )
2040 { 3708 {
3709 ev_tstamp diff;
2041 rtmn_diff = ev_rt_now - mn_now; 3710 rtmn_diff = ev_rt_now - mn_now;
2042 3711
3712 diff = odiff - rtmn_diff;
3713
2043 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3714 if (ecb_expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2044 return; /* all is well */ 3715 return; /* all is well */
2045 3716
2046 ev_rt_now = ev_time (); 3717 ev_rt_now = ev_time ();
2047 mn_now = get_clock (); 3718 mn_now = get_clock ();
2048 now_floor = mn_now; 3719 now_floor = mn_now;
… …
2057 else 3728 else
2058#endif 3729#endif
2059 { 3730 {
2060 ev_rt_now = ev_time (); 3731 ev_rt_now = ev_time ();
2061 3732
2062 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 3733 if (ecb_expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
2063 { 3734 {
2064 /* adjust timers. this is easy, as the offset is the same for all of them */ 3735 /* adjust timers. this is easy, as the offset is the same for all of them */
2065 timers_reschedule (EV_A_ ev_rt_now - mn_now); 3736 timers_reschedule (EV_A_ ev_rt_now - mn_now);
2066#if EV_PERIODIC_ENABLE 3737#if EV_PERIODIC_ENABLE
2067 periodics_reschedule (EV_A); 3738 periodics_reschedule (EV_A);
… …
2070 3741
2071 mn_now = ev_rt_now; 3742 mn_now = ev_rt_now;
2072 } 3743 }
2073} 3744}
2074 3745
2075void 3746int
2076ev_loop (EV_P_ int flags) 3747ev_run (EV_P_ int flags)
2077{ 3748{
2078#if EV_MINIMAL < 2 3749#if EV_FEATURE_API
2079 ++loop_depth; 3750 ++loop_depth;
2080#endif 3751#endif
2081 3752
3753 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
3754
2082 loop_done = EVUNLOOP_CANCEL; 3755 loop_done = EVBREAK_CANCEL;
2083 3756
2084 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 3757 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2085 3758
2086 do 3759 do
2087 { 3760 {
2088#if EV_VERIFY >= 2 3761#if EV_VERIFY >= 2
2089 ev_loop_verify (EV_A); 3762 ev_verify (EV_A);
2090#endif 3763#endif
2091 3764
2092#ifndef _WIN32 3765#ifndef _WIN32
2093 if (expect_false (curpid)) /* penalise the forking check even more */ 3766 if (ecb_expect_false (curpid)) /* penalise the forking check even more */
2094 if (expect_false (getpid () != curpid)) 3767 if (ecb_expect_false (getpid () != curpid))
2095 { 3768 {
2096 curpid = getpid (); 3769 curpid = getpid ();
2097 postfork = 1; 3770 postfork = 1;
2098 } 3771 }
2099#endif 3772#endif
2100 3773
2101#if EV_FORK_ENABLE 3774#if EV_FORK_ENABLE
2102 /* we might have forked, so queue fork handlers */ 3775 /* we might have forked, so queue fork handlers */
2103 if (expect_false (postfork)) 3776 if (ecb_expect_false (postfork))
2104 if (forkcnt) 3777 if (forkcnt)
2105 { 3778 {
2106 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3779 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2107 EV_INVOKE_PENDING; 3780 EV_INVOKE_PENDING;
2108 } 3781 }
2109#endif 3782#endif
2110 3783
3784#if EV_PREPARE_ENABLE
2111 /* queue prepare watchers (and execute them) */ 3785 /* queue prepare watchers (and execute them) */
2112 if (expect_false (preparecnt)) 3786 if (ecb_expect_false (preparecnt))
2113 { 3787 {
2114 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3788 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2115 EV_INVOKE_PENDING; 3789 EV_INVOKE_PENDING;
2116 } 3790 }
3791#endif
3792
3793 if (ecb_expect_false (loop_done))
3794 break;
2117 3795
2118 /* we might have forked, so reify kernel state if necessary */ 3796 /* we might have forked, so reify kernel state if necessary */
2119 if (expect_false (postfork)) 3797 if (ecb_expect_false (postfork))
2120 loop_fork (EV_A); 3798 loop_fork (EV_A);
2121 3799
2122 /* update fd-related kernel structures */ 3800 /* update fd-related kernel structures */
2123 fd_reify (EV_A); 3801 fd_reify (EV_A);
2124 3802
2125 /* calculate blocking time */ 3803 /* calculate blocking time */
2126 { 3804 {
2127 ev_tstamp waittime = 0.; 3805 ev_tstamp waittime = 0.;
2128 ev_tstamp sleeptime = 0.; 3806 ev_tstamp sleeptime = 0.;
2129 3807
3808 /* remember old timestamp for io_blocktime calculation */
3809 ev_tstamp prev_mn_now = mn_now;
3810
3811 /* update time to cancel out callback processing overhead */
3812 time_update (EV_A_ 1e100);
3813
3814 /* from now on, we want a pipe-wake-up */
3815 pipe_write_wanted = 1;
3816
3817 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3818
2130 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3819 if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2131 { 3820 {
2132 /* remember old timestamp for io_blocktime calculation */
2133 ev_tstamp prev_mn_now = mn_now;
2134
2135 /* update time to cancel out callback processing overhead */
2136 time_update (EV_A_ 1e100);
2137
2138 waittime = MAX_BLOCKTIME; 3821 waittime = MAX_BLOCKTIME;
2139 3822
2140 if (timercnt) 3823 if (timercnt)
2141 { 3824 {
2142 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3825 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2143 if (waittime > to) waittime = to; 3826 if (waittime > to) waittime = to;
2144 } 3827 }
2145 3828
2146#if EV_PERIODIC_ENABLE 3829#if EV_PERIODIC_ENABLE
2147 if (periodiccnt) 3830 if (periodiccnt)
2148 { 3831 {
2149 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3832 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2150 if (waittime > to) waittime = to; 3833 if (waittime > to) waittime = to;
2151 } 3834 }
2152#endif 3835#endif
2153 3836
2154 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3837 /* don't let timeouts decrease the waittime below timeout_blocktime */
2155 if (expect_false (waittime < timeout_blocktime)) 3838 if (ecb_expect_false (waittime < timeout_blocktime))
2156 waittime = timeout_blocktime; 3839 waittime = timeout_blocktime;
2157 3840
3841 /* at this point, we NEED to wait, so we have to ensure */
3842 /* to pass a minimum nonzero value to the backend */
3843 if (ecb_expect_false (waittime < backend_mintime))
3844 waittime = backend_mintime;
3845
2158 /* extra check because io_blocktime is commonly 0 */ 3846 /* extra check because io_blocktime is commonly 0 */
2159 if (expect_false (io_blocktime)) 3847 if (ecb_expect_false (io_blocktime))
2160 { 3848 {
2161 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3849 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2162 3850
2163 if (sleeptime > waittime - backend_fudge) 3851 if (sleeptime > waittime - backend_mintime)
2164 sleeptime = waittime - backend_fudge; 3852 sleeptime = waittime - backend_mintime;
2165 3853
2166 if (expect_true (sleeptime > 0.)) 3854 if (ecb_expect_true (sleeptime > 0.))
2167 { 3855 {
2168 ev_sleep (sleeptime); 3856 ev_sleep (sleeptime);
2169 waittime -= sleeptime; 3857 waittime -= sleeptime;
2170 } 3858 }
2171 } 3859 }
2172 } 3860 }
2173 3861
2174#if EV_MINIMAL < 2 3862#if EV_FEATURE_API
2175 ++loop_count; 3863 ++loop_count;
2176#endif 3864#endif
3865 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2177 backend_poll (EV_A_ waittime); 3866 backend_poll (EV_A_ waittime);
3867 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3868
3869 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3870
3871 ECB_MEMORY_FENCE_ACQUIRE;
3872 if (pipe_write_skipped)
3873 {
3874 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3875 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3876 }
2178 3877
2179 /* update ev_rt_now, do magic */ 3878 /* update ev_rt_now, do magic */
2180 time_update (EV_A_ waittime + sleeptime); 3879 time_update (EV_A_ waittime + sleeptime);
2181 } 3880 }
2182 3881
… …
2189#if EV_IDLE_ENABLE 3888#if EV_IDLE_ENABLE
2190 /* queue idle watchers unless other events are pending */ 3889 /* queue idle watchers unless other events are pending */
2191 idle_reify (EV_A); 3890 idle_reify (EV_A);
2192#endif 3891#endif
2193 3892
3893#if EV_CHECK_ENABLE
2194 /* queue check watchers, to be executed first */ 3894 /* queue check watchers, to be executed first */
2195 if (expect_false (checkcnt)) 3895 if (ecb_expect_false (checkcnt))
2196 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3896 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3897#endif
2197 3898
2198 EV_INVOKE_PENDING; 3899 EV_INVOKE_PENDING;
2199 } 3900 }
2200 while (expect_true ( 3901 while (ecb_expect_true (
2201 activecnt 3902 activecnt
2202 && !loop_done 3903 && !loop_done
2203 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3904 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2204 )); 3905 ));
2205 3906
2206 if (loop_done == EVUNLOOP_ONE) 3907 if (loop_done == EVBREAK_ONE)
2207 loop_done = EVUNLOOP_CANCEL; 3908 loop_done = EVBREAK_CANCEL;
2208 3909
2209#if EV_MINIMAL < 2 3910#if EV_FEATURE_API
2210 --loop_depth; 3911 --loop_depth;
2211#endif 3912#endif
2212}
2213 3913
3914 return activecnt;
3915}
3916
2214void 3917void
2215ev_unloop (EV_P_ int how) 3918ev_break (EV_P_ int how) EV_NOEXCEPT
2216{ 3919{
2217 loop_done = how; 3920 loop_done = how;
2218} 3921}
2219 3922
2220void 3923void
2221ev_ref (EV_P) 3924ev_ref (EV_P) EV_NOEXCEPT
2222{ 3925{
2223 ++activecnt; 3926 ++activecnt;
2224} 3927}
2225 3928
2226void 3929void
2227ev_unref (EV_P) 3930ev_unref (EV_P) EV_NOEXCEPT
2228{ 3931{
2229 --activecnt; 3932 --activecnt;
2230} 3933}
2231 3934
2232void 3935void
2233ev_now_update (EV_P) 3936ev_now_update (EV_P) EV_NOEXCEPT
2234{ 3937{
2235 time_update (EV_A_ 1e100); 3938 time_update (EV_A_ 1e100);
2236} 3939}
2237 3940
2238void 3941void
2239ev_suspend (EV_P) 3942ev_suspend (EV_P) EV_NOEXCEPT
2240{ 3943{
2241 ev_now_update (EV_A); 3944 ev_now_update (EV_A);
2242} 3945}
2243 3946
2244void 3947void
2245ev_resume (EV_P) 3948ev_resume (EV_P) EV_NOEXCEPT
2246{ 3949{
2247 ev_tstamp mn_prev = mn_now; 3950 ev_tstamp mn_prev = mn_now;
2248 3951
2249 ev_now_update (EV_A); 3952 ev_now_update (EV_A);
2250 timers_reschedule (EV_A_ mn_now - mn_prev); 3953 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2267inline_size void 3970inline_size void
2268wlist_del (WL *head, WL elem) 3971wlist_del (WL *head, WL elem)
2269{ 3972{
2270 while (*head) 3973 while (*head)
2271 { 3974 {
2272 if (*head == elem) 3975 if (ecb_expect_true (*head == elem))
2273 { 3976 {
2274 *head = elem->next; 3977 *head = elem->next;
2275 return; 3978 break;
2276 } 3979 }
2277 3980
2278 head = &(*head)->next; 3981 head = &(*head)->next;
2279 } 3982 }
2280} 3983}
… …
2289 w->pending = 0; 3992 w->pending = 0;
2290 } 3993 }
2291} 3994}
2292 3995
2293int 3996int
2294ev_clear_pending (EV_P_ void *w) 3997ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
2295{ 3998{
2296 W w_ = (W)w; 3999 W w_ = (W)w;
2297 int pending = w_->pending; 4000 int pending = w_->pending;
2298 4001
2299 if (expect_true (pending)) 4002 if (ecb_expect_true (pending))
2300 { 4003 {
2301 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 4004 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2302 p->w = (W)&pending_w; 4005 p->w = (W)&pending_w;
2303 w_->pending = 0; 4006 w_->pending = 0;
2304 return p->events; 4007 return p->events;
… …
2331 w->active = 0; 4034 w->active = 0;
2332} 4035}
2333 4036
2334/*****************************************************************************/ 4037/*****************************************************************************/
2335 4038
2336void noinline 4039ecb_noinline
4040void
2337ev_io_start (EV_P_ ev_io *w) 4041ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
2338{ 4042{
2339 int fd = w->fd; 4043 int fd = w->fd;
2340 4044
2341 if (expect_false (ev_is_active (w))) 4045 if (ecb_expect_false (ev_is_active (w)))
2342 return; 4046 return;
2343 4047
2344 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 4048 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2345 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 4049 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2346 4050
4051#if EV_VERIFY >= 2
4052 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
4053#endif
2347 EV_FREQUENT_CHECK; 4054 EV_FREQUENT_CHECK;
2348 4055
2349 ev_start (EV_A_ (W)w, 1); 4056 ev_start (EV_A_ (W)w, 1);
2350 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 4057 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
2351 wlist_add (&anfds[fd].head, (WL)w); 4058 wlist_add (&anfds[fd].head, (WL)w);
2352 4059
4060 /* common bug, apparently */
4061 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
4062
2353 fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1); 4063 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2354 w->events &= ~EV__IOFDSET; 4064 w->events &= ~EV__IOFDSET;
2355 4065
2356 EV_FREQUENT_CHECK; 4066 EV_FREQUENT_CHECK;
2357} 4067}
2358 4068
2359void noinline 4069ecb_noinline
4070void
2360ev_io_stop (EV_P_ ev_io *w) 4071ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
2361{ 4072{
2362 clear_pending (EV_A_ (W)w); 4073 clear_pending (EV_A_ (W)w);
2363 if (expect_false (!ev_is_active (w))) 4074 if (ecb_expect_false (!ev_is_active (w)))
2364 return; 4075 return;
2365 4076
2366 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 4077 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2367 4078
4079#if EV_VERIFY >= 2
4080 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
4081#endif
2368 EV_FREQUENT_CHECK; 4082 EV_FREQUENT_CHECK;
2369 4083
2370 wlist_del (&anfds[w->fd].head, (WL)w); 4084 wlist_del (&anfds[w->fd].head, (WL)w);
2371 ev_stop (EV_A_ (W)w); 4085 ev_stop (EV_A_ (W)w);
2372 4086
2373 fd_change (EV_A_ w->fd, 1); 4087 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2374 4088
2375 EV_FREQUENT_CHECK; 4089 EV_FREQUENT_CHECK;
2376} 4090}
2377 4091
2378void noinline 4092ecb_noinline
4093void
2379ev_timer_start (EV_P_ ev_timer *w) 4094ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
2380{ 4095{
2381 if (expect_false (ev_is_active (w))) 4096 if (ecb_expect_false (ev_is_active (w)))
2382 return; 4097 return;
2383 4098
2384 ev_at (w) += mn_now; 4099 ev_at (w) += mn_now;
2385 4100
2386 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 4101 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2387 4102
2388 EV_FREQUENT_CHECK; 4103 EV_FREQUENT_CHECK;
2389 4104
2390 ++timercnt; 4105 ++timercnt;
2391 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 4106 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
2392 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 4107 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
2393 ANHE_w (timers [ev_active (w)]) = (WT)w; 4108 ANHE_w (timers [ev_active (w)]) = (WT)w;
2394 ANHE_at_cache (timers [ev_active (w)]); 4109 ANHE_at_cache (timers [ev_active (w)]);
2395 upheap (timers, ev_active (w)); 4110 upheap (timers, ev_active (w));
2396 4111
2397 EV_FREQUENT_CHECK; 4112 EV_FREQUENT_CHECK;
2398 4113
2399 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 4114 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2400} 4115}
2401 4116
2402void noinline 4117ecb_noinline
4118void
2403ev_timer_stop (EV_P_ ev_timer *w) 4119ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
2404{ 4120{
2405 clear_pending (EV_A_ (W)w); 4121 clear_pending (EV_A_ (W)w);
2406 if (expect_false (!ev_is_active (w))) 4122 if (ecb_expect_false (!ev_is_active (w)))
2407 return; 4123 return;
2408 4124
2409 EV_FREQUENT_CHECK; 4125 EV_FREQUENT_CHECK;
2410 4126
2411 { 4127 {
… …
2413 4129
2414 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 4130 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2415 4131
2416 --timercnt; 4132 --timercnt;
2417 4133
2418 if (expect_true (active < timercnt + HEAP0)) 4134 if (ecb_expect_true (active < timercnt + HEAP0))
2419 { 4135 {
2420 timers [active] = timers [timercnt + HEAP0]; 4136 timers [active] = timers [timercnt + HEAP0];
2421 adjustheap (timers, timercnt, active); 4137 adjustheap (timers, timercnt, active);
2422 } 4138 }
2423 } 4139 }
2424 4140
2425 EV_FREQUENT_CHECK;
2426
2427 ev_at (w) -= mn_now; 4141 ev_at (w) -= mn_now;
2428 4142
2429 ev_stop (EV_A_ (W)w); 4143 ev_stop (EV_A_ (W)w);
2430}
2431 4144
2432void noinline 4145 EV_FREQUENT_CHECK;
4146}
4147
4148ecb_noinline
4149void
2433ev_timer_again (EV_P_ ev_timer *w) 4150ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
2434{ 4151{
2435 EV_FREQUENT_CHECK; 4152 EV_FREQUENT_CHECK;
4153
4154 clear_pending (EV_A_ (W)w);
2436 4155
2437 if (ev_is_active (w)) 4156 if (ev_is_active (w))
2438 { 4157 {
2439 if (w->repeat) 4158 if (w->repeat)
2440 { 4159 {
… …
2452 } 4171 }
2453 4172
2454 EV_FREQUENT_CHECK; 4173 EV_FREQUENT_CHECK;
2455} 4174}
2456 4175
4176ev_tstamp
4177ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
4178{
4179 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
4180}
4181
2457#if EV_PERIODIC_ENABLE 4182#if EV_PERIODIC_ENABLE
2458void noinline 4183ecb_noinline
4184void
2459ev_periodic_start (EV_P_ ev_periodic *w) 4185ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
2460{ 4186{
2461 if (expect_false (ev_is_active (w))) 4187 if (ecb_expect_false (ev_is_active (w)))
2462 return; 4188 return;
2463 4189
2464 if (w->reschedule_cb) 4190 if (w->reschedule_cb)
2465 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4191 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2466 else if (w->interval) 4192 else if (w->interval)
2467 { 4193 {
2468 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 4194 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2469 /* this formula differs from the one in periodic_reify because we do not always round up */ 4195 periodic_recalc (EV_A_ w);
2470 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2471 } 4196 }
2472 else 4197 else
2473 ev_at (w) = w->offset; 4198 ev_at (w) = w->offset;
2474 4199
2475 EV_FREQUENT_CHECK; 4200 EV_FREQUENT_CHECK;
2476 4201
2477 ++periodiccnt; 4202 ++periodiccnt;
2478 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4203 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2479 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4204 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
2480 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4205 ANHE_w (periodics [ev_active (w)]) = (WT)w;
2481 ANHE_at_cache (periodics [ev_active (w)]); 4206 ANHE_at_cache (periodics [ev_active (w)]);
2482 upheap (periodics, ev_active (w)); 4207 upheap (periodics, ev_active (w));
2483 4208
2484 EV_FREQUENT_CHECK; 4209 EV_FREQUENT_CHECK;
2485 4210
2486 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4211 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2487} 4212}
2488 4213
2489void noinline 4214ecb_noinline
4215void
2490ev_periodic_stop (EV_P_ ev_periodic *w) 4216ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
2491{ 4217{
2492 clear_pending (EV_A_ (W)w); 4218 clear_pending (EV_A_ (W)w);
2493 if (expect_false (!ev_is_active (w))) 4219 if (ecb_expect_false (!ev_is_active (w)))
2494 return; 4220 return;
2495 4221
2496 EV_FREQUENT_CHECK; 4222 EV_FREQUENT_CHECK;
2497 4223
2498 { 4224 {
… …
2500 4226
2501 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 4227 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2502 4228
2503 --periodiccnt; 4229 --periodiccnt;
2504 4230
2505 if (expect_true (active < periodiccnt + HEAP0)) 4231 if (ecb_expect_true (active < periodiccnt + HEAP0))
2506 { 4232 {
2507 periodics [active] = periodics [periodiccnt + HEAP0]; 4233 periodics [active] = periodics [periodiccnt + HEAP0];
2508 adjustheap (periodics, periodiccnt, active); 4234 adjustheap (periodics, periodiccnt, active);
2509 } 4235 }
2510 } 4236 }
2511 4237
2512 EV_FREQUENT_CHECK;
2513
2514 ev_stop (EV_A_ (W)w); 4238 ev_stop (EV_A_ (W)w);
2515}
2516 4239
2517void noinline 4240 EV_FREQUENT_CHECK;
4241}
4242
4243ecb_noinline
4244void
2518ev_periodic_again (EV_P_ ev_periodic *w) 4245ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
2519{ 4246{
2520 /* TODO: use adjustheap and recalculation */ 4247 /* TODO: use adjustheap and recalculation */
2521 ev_periodic_stop (EV_A_ w); 4248 ev_periodic_stop (EV_A_ w);
2522 ev_periodic_start (EV_A_ w); 4249 ev_periodic_start (EV_A_ w);
2523} 4250}
… …
2525 4252
2526#ifndef SA_RESTART 4253#ifndef SA_RESTART
2527# define SA_RESTART 0 4254# define SA_RESTART 0
2528#endif 4255#endif
2529 4256
2530void noinline 4257#if EV_SIGNAL_ENABLE
4258
4259ecb_noinline
4260void
2531ev_signal_start (EV_P_ ev_signal *w) 4261ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
2532{ 4262{
4263 if (ecb_expect_false (ev_is_active (w)))
4264 return;
4265
4266 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
4267
2533#if EV_MULTIPLICITY 4268#if EV_MULTIPLICITY
2534 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4269 assert (("libev: a signal must not be attached to two different loops",
2535#endif 4270 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2536 if (expect_false (ev_is_active (w)))
2537 return;
2538 4271
2539 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0)); 4272 signals [w->signum - 1].loop = EV_A;
4273 ECB_MEMORY_FENCE_RELEASE;
4274#endif
2540 4275
2541 evpipe_init (EV_A);
2542
2543 EV_FREQUENT_CHECK; 4276 EV_FREQUENT_CHECK;
2544 4277
4278#if EV_USE_SIGNALFD
4279 if (sigfd == -2)
2545 { 4280 {
2546#ifndef _WIN32 4281 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2547 sigset_t full, prev; 4282 if (sigfd < 0 && errno == EINVAL)
2548 sigfillset (&full); 4283 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2549 sigprocmask (SIG_SETMASK, &full, &prev);
2550#endif
2551 4284
2552 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); 4285 if (sigfd >= 0)
4286 {
4287 fd_intern (sigfd); /* doing it twice will not hurt */
2553 4288
2554#ifndef _WIN32 4289 sigemptyset (&sigfd_set);
2555 sigprocmask (SIG_SETMASK, &prev, 0); 4290
2556#endif 4291 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
4292 ev_set_priority (&sigfd_w, EV_MAXPRI);
4293 ev_io_start (EV_A_ &sigfd_w);
4294 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
4295 }
2557 } 4296 }
4297
4298 if (sigfd >= 0)
4299 {
4300 /* TODO: check .head */
4301 sigaddset (&sigfd_set, w->signum);
4302 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
4303
4304 signalfd (sigfd, &sigfd_set, 0);
4305 }
4306#endif
2558 4307
2559 ev_start (EV_A_ (W)w, 1); 4308 ev_start (EV_A_ (W)w, 1);
2560 wlist_add (&signals [w->signum - 1].head, (WL)w); 4309 wlist_add (&signals [w->signum - 1].head, (WL)w);
2561 4310
2562 if (!((WL)w)->next) 4311 if (!((WL)w)->next)
4312# if EV_USE_SIGNALFD
4313 if (sigfd < 0) /*TODO*/
4314# endif
2563 { 4315 {
2564#if _WIN32 4316# ifdef _WIN32
4317 evpipe_init (EV_A);
4318
2565 signal (w->signum, ev_sighandler); 4319 signal (w->signum, ev_sighandler);
2566#else 4320# else
2567 struct sigaction sa; 4321 struct sigaction sa;
4322
4323 evpipe_init (EV_A);
4324
2568 sa.sa_handler = ev_sighandler; 4325 sa.sa_handler = ev_sighandler;
2569 sigfillset (&sa.sa_mask); 4326 sigfillset (&sa.sa_mask);
2570 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 4327 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2571 sigaction (w->signum, &sa, 0); 4328 sigaction (w->signum, &sa, 0);
4329
4330 if (origflags & EVFLAG_NOSIGMASK)
4331 {
4332 sigemptyset (&sa.sa_mask);
4333 sigaddset (&sa.sa_mask, w->signum);
4334 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
4335 }
2572#endif 4336#endif
2573 } 4337 }
2574 4338
2575 EV_FREQUENT_CHECK; 4339 EV_FREQUENT_CHECK;
2576} 4340}
2577 4341
2578void noinline 4342ecb_noinline
4343void
2579ev_signal_stop (EV_P_ ev_signal *w) 4344ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
2580{ 4345{
2581 clear_pending (EV_A_ (W)w); 4346 clear_pending (EV_A_ (W)w);
2582 if (expect_false (!ev_is_active (w))) 4347 if (ecb_expect_false (!ev_is_active (w)))
2583 return; 4348 return;
2584 4349
2585 EV_FREQUENT_CHECK; 4350 EV_FREQUENT_CHECK;
2586 4351
2587 wlist_del (&signals [w->signum - 1].head, (WL)w); 4352 wlist_del (&signals [w->signum - 1].head, (WL)w);
2588 ev_stop (EV_A_ (W)w); 4353 ev_stop (EV_A_ (W)w);
2589 4354
2590 if (!signals [w->signum - 1].head) 4355 if (!signals [w->signum - 1].head)
4356 {
4357#if EV_MULTIPLICITY
4358 signals [w->signum - 1].loop = 0; /* unattach from signal */
4359#endif
4360#if EV_USE_SIGNALFD
4361 if (sigfd >= 0)
4362 {
4363 sigset_t ss;
4364
4365 sigemptyset (&ss);
4366 sigaddset (&ss, w->signum);
4367 sigdelset (&sigfd_set, w->signum);
4368
4369 signalfd (sigfd, &sigfd_set, 0);
4370 sigprocmask (SIG_UNBLOCK, &ss, 0);
4371 }
4372 else
4373#endif
2591 signal (w->signum, SIG_DFL); 4374 signal (w->signum, SIG_DFL);
4375 }
2592 4376
2593 EV_FREQUENT_CHECK; 4377 EV_FREQUENT_CHECK;
2594} 4378}
2595 4379
4380#endif
4381
4382#if EV_CHILD_ENABLE
4383
2596void 4384void
2597ev_child_start (EV_P_ ev_child *w) 4385ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
2598{ 4386{
2599#if EV_MULTIPLICITY 4387#if EV_MULTIPLICITY
2600 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4388 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2601#endif 4389#endif
2602 if (expect_false (ev_is_active (w))) 4390 if (ecb_expect_false (ev_is_active (w)))
2603 return; 4391 return;
2604 4392
2605 EV_FREQUENT_CHECK; 4393 EV_FREQUENT_CHECK;
2606 4394
2607 ev_start (EV_A_ (W)w, 1); 4395 ev_start (EV_A_ (W)w, 1);
2608 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4396 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2609 4397
2610 EV_FREQUENT_CHECK; 4398 EV_FREQUENT_CHECK;
2611} 4399}
2612 4400
2613void 4401void
2614ev_child_stop (EV_P_ ev_child *w) 4402ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
2615{ 4403{
2616 clear_pending (EV_A_ (W)w); 4404 clear_pending (EV_A_ (W)w);
2617 if (expect_false (!ev_is_active (w))) 4405 if (ecb_expect_false (!ev_is_active (w)))
2618 return; 4406 return;
2619 4407
2620 EV_FREQUENT_CHECK; 4408 EV_FREQUENT_CHECK;
2621 4409
2622 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4410 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2623 ev_stop (EV_A_ (W)w); 4411 ev_stop (EV_A_ (W)w);
2624 4412
2625 EV_FREQUENT_CHECK; 4413 EV_FREQUENT_CHECK;
2626} 4414}
4415
4416#endif
2627 4417
2628#if EV_STAT_ENABLE 4418#if EV_STAT_ENABLE
2629 4419
2630# ifdef _WIN32 4420# ifdef _WIN32
2631# undef lstat 4421# undef lstat
… …
2634 4424
2635#define DEF_STAT_INTERVAL 5.0074891 4425#define DEF_STAT_INTERVAL 5.0074891
2636#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4426#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2637#define MIN_STAT_INTERVAL 0.1074891 4427#define MIN_STAT_INTERVAL 0.1074891
2638 4428
2639static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4429ecb_noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2640 4430
2641#if EV_USE_INOTIFY 4431#if EV_USE_INOTIFY
2642# define EV_INOTIFY_BUFSIZE 8192
2643 4432
2644static void noinline 4433/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
4434# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
4435
4436ecb_noinline
4437static void
2645infy_add (EV_P_ ev_stat *w) 4438infy_add (EV_P_ ev_stat *w)
2646{ 4439{
2647 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); 4440 w->wd = inotify_add_watch (fs_fd, w->path,
4441 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4442 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4443 | IN_DONT_FOLLOW | IN_MASK_ADD);
2648 4444
2649 if (w->wd < 0) 4445 if (w->wd >= 0)
4446 {
4447 struct statfs sfs;
4448
4449 /* now local changes will be tracked by inotify, but remote changes won't */
4450 /* unless the filesystem is known to be local, we therefore still poll */
4451 /* also do poll on <2.6.25, but with normal frequency */
4452
4453 if (!fs_2625)
4454 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
4455 else if (!statfs (w->path, &sfs)
4456 && (sfs.f_type == 0x1373 /* devfs */
4457 || sfs.f_type == 0x4006 /* fat */
4458 || sfs.f_type == 0x4d44 /* msdos */
4459 || sfs.f_type == 0xEF53 /* ext2/3 */
4460 || sfs.f_type == 0x72b6 /* jffs2 */
4461 || sfs.f_type == 0x858458f6 /* ramfs */
4462 || sfs.f_type == 0x5346544e /* ntfs */
4463 || sfs.f_type == 0x3153464a /* jfs */
4464 || sfs.f_type == 0x9123683e /* btrfs */
4465 || sfs.f_type == 0x52654973 /* reiser3 */
4466 || sfs.f_type == 0x01021994 /* tmpfs */
4467 || sfs.f_type == 0x58465342 /* xfs */))
4468 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
4469 else
4470 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2650 { 4471 }
4472 else
4473 {
4474 /* can't use inotify, continue to stat */
2651 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4475 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2652 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2653 4476
2654 /* monitor some parent directory for speedup hints */ 4477 /* if path is not there, monitor some parent directory for speedup hints */
2655 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 4478 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2656 /* but an efficiency issue only */ 4479 /* but an efficiency issue only */
2657 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 4480 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2658 { 4481 {
2659 char path [4096]; 4482 char path [4096];
… …
2669 if (!pend || pend == path) 4492 if (!pend || pend == path)
2670 break; 4493 break;
2671 4494
2672 *pend = 0; 4495 *pend = 0;
2673 w->wd = inotify_add_watch (fs_fd, path, mask); 4496 w->wd = inotify_add_watch (fs_fd, path, mask);
2674 } 4497 }
2675 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 4498 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2676 } 4499 }
2677 } 4500 }
2678 4501
2679 if (w->wd >= 0) 4502 if (w->wd >= 0)
2680 {
2681 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4503 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2682 4504
2683 /* now local changes will be tracked by inotify, but remote changes won't */ 4505 /* now re-arm timer, if required */
2684 /* unless the filesystem it known to be local, we therefore still poll */ 4506 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2685 /* also do poll on <2.6.25, but with normal frequency */
2686 struct statfs sfs;
2687
2688 if (fs_2625 && !statfs (w->path, &sfs))
2689 if (sfs.f_type == 0x1373 /* devfs */
2690 || sfs.f_type == 0xEF53 /* ext2/3 */
2691 || sfs.f_type == 0x3153464a /* jfs */
2692 || sfs.f_type == 0x52654973 /* reiser3 */
2693 || sfs.f_type == 0x01021994 /* tempfs */
2694 || sfs.f_type == 0x58465342 /* xfs */)
2695 return;
2696
2697 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2698 ev_timer_again (EV_A_ &w->timer); 4507 ev_timer_again (EV_A_ &w->timer);
2699 } 4508 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2700} 4509}
2701 4510
2702static void noinline 4511ecb_noinline
4512static void
2703infy_del (EV_P_ ev_stat *w) 4513infy_del (EV_P_ ev_stat *w)
2704{ 4514{
2705 int slot; 4515 int slot;
2706 int wd = w->wd; 4516 int wd = w->wd;
2707 4517
2708 if (wd < 0) 4518 if (wd < 0)
2709 return; 4519 return;
2710 4520
2711 w->wd = -2; 4521 w->wd = -2;
2712 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 4522 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2713 wlist_del (&fs_hash [slot].head, (WL)w); 4523 wlist_del (&fs_hash [slot].head, (WL)w);
2714 4524
2715 /* remove this watcher, if others are watching it, they will rearm */ 4525 /* remove this watcher, if others are watching it, they will rearm */
2716 inotify_rm_watch (fs_fd, wd); 4526 inotify_rm_watch (fs_fd, wd);
2717} 4527}
2718 4528
2719static void noinline 4529ecb_noinline
4530static void
2720infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4531infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2721{ 4532{
2722 if (slot < 0) 4533 if (slot < 0)
2723 /* overflow, need to check for all hash slots */ 4534 /* overflow, need to check for all hash slots */
2724 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4535 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2725 infy_wd (EV_A_ slot, wd, ev); 4536 infy_wd (EV_A_ slot, wd, ev);
2726 else 4537 else
2727 { 4538 {
2728 WL w_; 4539 WL w_;
2729 4540
2730 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 4541 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2731 { 4542 {
2732 ev_stat *w = (ev_stat *)w_; 4543 ev_stat *w = (ev_stat *)w_;
2733 w_ = w_->next; /* lets us remove this watcher and all before it */ 4544 w_ = w_->next; /* lets us remove this watcher and all before it */
2734 4545
2735 if (w->wd == wd || wd == -1) 4546 if (w->wd == wd || wd == -1)
2736 { 4547 {
2737 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 4548 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2738 { 4549 {
2739 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4550 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2740 w->wd = -1; 4551 w->wd = -1;
2741 infy_add (EV_A_ w); /* re-add, no matter what */ 4552 infy_add (EV_A_ w); /* re-add, no matter what */
2742 } 4553 }
2743 4554
2744 stat_timer_cb (EV_A_ &w->timer, 0); 4555 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2749 4560
2750static void 4561static void
2751infy_cb (EV_P_ ev_io *w, int revents) 4562infy_cb (EV_P_ ev_io *w, int revents)
2752{ 4563{
2753 char buf [EV_INOTIFY_BUFSIZE]; 4564 char buf [EV_INOTIFY_BUFSIZE];
2754 struct inotify_event *ev = (struct inotify_event *)buf;
2755 int ofs; 4565 int ofs;
2756 int len = read (fs_fd, buf, sizeof (buf)); 4566 int len = read (fs_fd, buf, sizeof (buf));
2757 4567
2758 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 4568 for (ofs = 0; ofs < len; )
4569 {
4570 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2759 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4571 infy_wd (EV_A_ ev->wd, ev->wd, ev);
4572 ofs += sizeof (struct inotify_event) + ev->len;
4573 }
2760} 4574}
2761 4575
2762inline_size void 4576inline_size ecb_cold
4577void
2763check_2625 (EV_P) 4578ev_check_2625 (EV_P)
2764{ 4579{
2765 /* kernels < 2.6.25 are borked 4580 /* kernels < 2.6.25 are borked
2766 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4581 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2767 */ 4582 */
2768 struct utsname buf; 4583 if (ev_linux_version () < 0x020619)
2769 int major, minor, micro;
2770
2771 if (uname (&buf))
2772 return; 4584 return;
2773 4585
2774 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2775 return;
2776
2777 if (major < 2
2778 || (major == 2 && minor < 6)
2779 || (major == 2 && minor == 6 && micro < 25))
2780 return;
2781
2782 fs_2625 = 1; 4586 fs_2625 = 1;
4587}
4588
4589inline_size int
4590infy_newfd (void)
4591{
4592#if defined IN_CLOEXEC && defined IN_NONBLOCK
4593 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
4594 if (fd >= 0)
4595 return fd;
4596#endif
4597 return inotify_init ();
2783} 4598}
2784 4599
2785inline_size void 4600inline_size void
2786infy_init (EV_P) 4601infy_init (EV_P)
2787{ 4602{
2788 if (fs_fd != -2) 4603 if (fs_fd != -2)
2789 return; 4604 return;
2790 4605
2791 fs_fd = -1; 4606 fs_fd = -1;
2792 4607
2793 check_2625 (EV_A); 4608 ev_check_2625 (EV_A);
2794 4609
2795 fs_fd = inotify_init (); 4610 fs_fd = infy_newfd ();
2796 4611
2797 if (fs_fd >= 0) 4612 if (fs_fd >= 0)
2798 { 4613 {
4614 fd_intern (fs_fd);
2799 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 4615 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2800 ev_set_priority (&fs_w, EV_MAXPRI); 4616 ev_set_priority (&fs_w, EV_MAXPRI);
2801 ev_io_start (EV_A_ &fs_w); 4617 ev_io_start (EV_A_ &fs_w);
4618 ev_unref (EV_A);
2802 } 4619 }
2803} 4620}
2804 4621
2805inline_size void 4622inline_size void
2806infy_fork (EV_P) 4623infy_fork (EV_P)
… …
2808 int slot; 4625 int slot;
2809 4626
2810 if (fs_fd < 0) 4627 if (fs_fd < 0)
2811 return; 4628 return;
2812 4629
4630 ev_ref (EV_A);
4631 ev_io_stop (EV_A_ &fs_w);
2813 close (fs_fd); 4632 close (fs_fd);
2814 fs_fd = inotify_init (); 4633 fs_fd = infy_newfd ();
2815 4634
4635 if (fs_fd >= 0)
4636 {
4637 fd_intern (fs_fd);
4638 ev_io_set (&fs_w, fs_fd, EV_READ);
4639 ev_io_start (EV_A_ &fs_w);
4640 ev_unref (EV_A);
4641 }
4642
2816 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4643 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2817 { 4644 {
2818 WL w_ = fs_hash [slot].head; 4645 WL w_ = fs_hash [slot].head;
2819 fs_hash [slot].head = 0; 4646 fs_hash [slot].head = 0;
2820 4647
2821 while (w_) 4648 while (w_)
… …
2826 w->wd = -1; 4653 w->wd = -1;
2827 4654
2828 if (fs_fd >= 0) 4655 if (fs_fd >= 0)
2829 infy_add (EV_A_ w); /* re-add, no matter what */ 4656 infy_add (EV_A_ w); /* re-add, no matter what */
2830 else 4657 else
4658 {
4659 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
4660 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2831 ev_timer_again (EV_A_ &w->timer); 4661 ev_timer_again (EV_A_ &w->timer);
4662 if (ev_is_active (&w->timer)) ev_unref (EV_A);
4663 }
2832 } 4664 }
2833 } 4665 }
2834} 4666}
2835 4667
2836#endif 4668#endif
… …
2840#else 4672#else
2841# define EV_LSTAT(p,b) lstat (p, b) 4673# define EV_LSTAT(p,b) lstat (p, b)
2842#endif 4674#endif
2843 4675
2844void 4676void
2845ev_stat_stat (EV_P_ ev_stat *w) 4677ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
2846{ 4678{
2847 if (lstat (w->path, &w->attr) < 0) 4679 if (lstat (w->path, &w->attr) < 0)
2848 w->attr.st_nlink = 0; 4680 w->attr.st_nlink = 0;
2849 else if (!w->attr.st_nlink) 4681 else if (!w->attr.st_nlink)
2850 w->attr.st_nlink = 1; 4682 w->attr.st_nlink = 1;
2851} 4683}
2852 4684
2853static void noinline 4685ecb_noinline
4686static void
2854stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4687stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2855{ 4688{
2856 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4689 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2857 4690
2858 /* we copy this here each the time so that */ 4691 ev_statdata prev = w->attr;
2859 /* prev has the old value when the callback gets invoked */
2860 w->prev = w->attr;
2861 ev_stat_stat (EV_A_ w); 4692 ev_stat_stat (EV_A_ w);
2862 4693
2863 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 4694 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2864 if ( 4695 if (
2865 w->prev.st_dev != w->attr.st_dev 4696 prev.st_dev != w->attr.st_dev
2866 || w->prev.st_ino != w->attr.st_ino 4697 || prev.st_ino != w->attr.st_ino
2867 || w->prev.st_mode != w->attr.st_mode 4698 || prev.st_mode != w->attr.st_mode
2868 || w->prev.st_nlink != w->attr.st_nlink 4699 || prev.st_nlink != w->attr.st_nlink
2869 || w->prev.st_uid != w->attr.st_uid 4700 || prev.st_uid != w->attr.st_uid
2870 || w->prev.st_gid != w->attr.st_gid 4701 || prev.st_gid != w->attr.st_gid
2871 || w->prev.st_rdev != w->attr.st_rdev 4702 || prev.st_rdev != w->attr.st_rdev
2872 || w->prev.st_size != w->attr.st_size 4703 || prev.st_size != w->attr.st_size
2873 || w->prev.st_atime != w->attr.st_atime 4704 || prev.st_atime != w->attr.st_atime
2874 || w->prev.st_mtime != w->attr.st_mtime 4705 || prev.st_mtime != w->attr.st_mtime
2875 || w->prev.st_ctime != w->attr.st_ctime 4706 || prev.st_ctime != w->attr.st_ctime
2876 ) { 4707 ) {
4708 /* we only update w->prev on actual differences */
4709 /* in case we test more often than invoke the callback, */
4710 /* to ensure that prev is always different to attr */
4711 w->prev = prev;
4712
2877 #if EV_USE_INOTIFY 4713 #if EV_USE_INOTIFY
2878 if (fs_fd >= 0) 4714 if (fs_fd >= 0)
2879 { 4715 {
2880 infy_del (EV_A_ w); 4716 infy_del (EV_A_ w);
2881 infy_add (EV_A_ w); 4717 infy_add (EV_A_ w);
… …
2886 ev_feed_event (EV_A_ w, EV_STAT); 4722 ev_feed_event (EV_A_ w, EV_STAT);
2887 } 4723 }
2888} 4724}
2889 4725
2890void 4726void
2891ev_stat_start (EV_P_ ev_stat *w) 4727ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
2892{ 4728{
2893 if (expect_false (ev_is_active (w))) 4729 if (ecb_expect_false (ev_is_active (w)))
2894 return; 4730 return;
2895 4731
2896 ev_stat_stat (EV_A_ w); 4732 ev_stat_stat (EV_A_ w);
2897 4733
2898 if (w->interval < MIN_STAT_INTERVAL && w->interval) 4734 if (w->interval < MIN_STAT_INTERVAL && w->interval)
… …
2906 4742
2907 if (fs_fd >= 0) 4743 if (fs_fd >= 0)
2908 infy_add (EV_A_ w); 4744 infy_add (EV_A_ w);
2909 else 4745 else
2910#endif 4746#endif
4747 {
2911 ev_timer_again (EV_A_ &w->timer); 4748 ev_timer_again (EV_A_ &w->timer);
4749 ev_unref (EV_A);
4750 }
2912 4751
2913 ev_start (EV_A_ (W)w, 1); 4752 ev_start (EV_A_ (W)w, 1);
2914 4753
2915 EV_FREQUENT_CHECK; 4754 EV_FREQUENT_CHECK;
2916} 4755}
2917 4756
2918void 4757void
2919ev_stat_stop (EV_P_ ev_stat *w) 4758ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
2920{ 4759{
2921 clear_pending (EV_A_ (W)w); 4760 clear_pending (EV_A_ (W)w);
2922 if (expect_false (!ev_is_active (w))) 4761 if (ecb_expect_false (!ev_is_active (w)))
2923 return; 4762 return;
2924 4763
2925 EV_FREQUENT_CHECK; 4764 EV_FREQUENT_CHECK;
2926 4765
2927#if EV_USE_INOTIFY 4766#if EV_USE_INOTIFY
2928 infy_del (EV_A_ w); 4767 infy_del (EV_A_ w);
2929#endif 4768#endif
4769
4770 if (ev_is_active (&w->timer))
4771 {
4772 ev_ref (EV_A);
2930 ev_timer_stop (EV_A_ &w->timer); 4773 ev_timer_stop (EV_A_ &w->timer);
4774 }
2931 4775
2932 ev_stop (EV_A_ (W)w); 4776 ev_stop (EV_A_ (W)w);
2933 4777
2934 EV_FREQUENT_CHECK; 4778 EV_FREQUENT_CHECK;
2935} 4779}
2936#endif 4780#endif
2937 4781
2938#if EV_IDLE_ENABLE 4782#if EV_IDLE_ENABLE
2939void 4783void
2940ev_idle_start (EV_P_ ev_idle *w) 4784ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
2941{ 4785{
2942 if (expect_false (ev_is_active (w))) 4786 if (ecb_expect_false (ev_is_active (w)))
2943 return; 4787 return;
2944 4788
2945 pri_adjust (EV_A_ (W)w); 4789 pri_adjust (EV_A_ (W)w);
2946 4790
2947 EV_FREQUENT_CHECK; 4791 EV_FREQUENT_CHECK;
… …
2950 int active = ++idlecnt [ABSPRI (w)]; 4794 int active = ++idlecnt [ABSPRI (w)];
2951 4795
2952 ++idleall; 4796 ++idleall;
2953 ev_start (EV_A_ (W)w, active); 4797 ev_start (EV_A_ (W)w, active);
2954 4798
2955 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 4799 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
2956 idles [ABSPRI (w)][active - 1] = w; 4800 idles [ABSPRI (w)][active - 1] = w;
2957 } 4801 }
2958 4802
2959 EV_FREQUENT_CHECK; 4803 EV_FREQUENT_CHECK;
2960} 4804}
2961 4805
2962void 4806void
2963ev_idle_stop (EV_P_ ev_idle *w) 4807ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
2964{ 4808{
2965 clear_pending (EV_A_ (W)w); 4809 clear_pending (EV_A_ (W)w);
2966 if (expect_false (!ev_is_active (w))) 4810 if (ecb_expect_false (!ev_is_active (w)))
2967 return; 4811 return;
2968 4812
2969 EV_FREQUENT_CHECK; 4813 EV_FREQUENT_CHECK;
2970 4814
2971 { 4815 {
… …
2980 4824
2981 EV_FREQUENT_CHECK; 4825 EV_FREQUENT_CHECK;
2982} 4826}
2983#endif 4827#endif
2984 4828
4829#if EV_PREPARE_ENABLE
2985void 4830void
2986ev_prepare_start (EV_P_ ev_prepare *w) 4831ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
2987{ 4832{
2988 if (expect_false (ev_is_active (w))) 4833 if (ecb_expect_false (ev_is_active (w)))
2989 return; 4834 return;
2990 4835
2991 EV_FREQUENT_CHECK; 4836 EV_FREQUENT_CHECK;
2992 4837
2993 ev_start (EV_A_ (W)w, ++preparecnt); 4838 ev_start (EV_A_ (W)w, ++preparecnt);
2994 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4839 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
2995 prepares [preparecnt - 1] = w; 4840 prepares [preparecnt - 1] = w;
2996 4841
2997 EV_FREQUENT_CHECK; 4842 EV_FREQUENT_CHECK;
2998} 4843}
2999 4844
3000void 4845void
3001ev_prepare_stop (EV_P_ ev_prepare *w) 4846ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
3002{ 4847{
3003 clear_pending (EV_A_ (W)w); 4848 clear_pending (EV_A_ (W)w);
3004 if (expect_false (!ev_is_active (w))) 4849 if (ecb_expect_false (!ev_is_active (w)))
3005 return; 4850 return;
3006 4851
3007 EV_FREQUENT_CHECK; 4852 EV_FREQUENT_CHECK;
3008 4853
3009 { 4854 {
… …
3015 4860
3016 ev_stop (EV_A_ (W)w); 4861 ev_stop (EV_A_ (W)w);
3017 4862
3018 EV_FREQUENT_CHECK; 4863 EV_FREQUENT_CHECK;
3019} 4864}
4865#endif
3020 4866
4867#if EV_CHECK_ENABLE
3021void 4868void
3022ev_check_start (EV_P_ ev_check *w) 4869ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
3023{ 4870{
3024 if (expect_false (ev_is_active (w))) 4871 if (ecb_expect_false (ev_is_active (w)))
3025 return; 4872 return;
3026 4873
3027 EV_FREQUENT_CHECK; 4874 EV_FREQUENT_CHECK;
3028 4875
3029 ev_start (EV_A_ (W)w, ++checkcnt); 4876 ev_start (EV_A_ (W)w, ++checkcnt);
3030 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 4877 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
3031 checks [checkcnt - 1] = w; 4878 checks [checkcnt - 1] = w;
3032 4879
3033 EV_FREQUENT_CHECK; 4880 EV_FREQUENT_CHECK;
3034} 4881}
3035 4882
3036void 4883void
3037ev_check_stop (EV_P_ ev_check *w) 4884ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
3038{ 4885{
3039 clear_pending (EV_A_ (W)w); 4886 clear_pending (EV_A_ (W)w);
3040 if (expect_false (!ev_is_active (w))) 4887 if (ecb_expect_false (!ev_is_active (w)))
3041 return; 4888 return;
3042 4889
3043 EV_FREQUENT_CHECK; 4890 EV_FREQUENT_CHECK;
3044 4891
3045 { 4892 {
… …
3051 4898
3052 ev_stop (EV_A_ (W)w); 4899 ev_stop (EV_A_ (W)w);
3053 4900
3054 EV_FREQUENT_CHECK; 4901 EV_FREQUENT_CHECK;
3055} 4902}
4903#endif
3056 4904
3057#if EV_EMBED_ENABLE 4905#if EV_EMBED_ENABLE
3058void noinline 4906ecb_noinline
4907void
3059ev_embed_sweep (EV_P_ ev_embed *w) 4908ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
3060{ 4909{
3061 ev_loop (w->other, EVLOOP_NONBLOCK); 4910 ev_run (w->other, EVRUN_NOWAIT);
3062} 4911}
3063 4912
3064static void 4913static void
3065embed_io_cb (EV_P_ ev_io *io, int revents) 4914embed_io_cb (EV_P_ ev_io *io, int revents)
3066{ 4915{
3067 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4916 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3068 4917
3069 if (ev_cb (w)) 4918 if (ev_cb (w))
3070 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4919 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3071 else 4920 else
3072 ev_loop (w->other, EVLOOP_NONBLOCK); 4921 ev_run (w->other, EVRUN_NOWAIT);
3073} 4922}
3074 4923
3075static void 4924static void
3076embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4925embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3077{ 4926{
3078 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 4927 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
3079 4928
3080 { 4929 {
3081 struct ev_loop *loop = w->other; 4930 EV_P = w->other;
3082 4931
3083 while (fdchangecnt) 4932 while (fdchangecnt)
3084 { 4933 {
3085 fd_reify (EV_A); 4934 fd_reify (EV_A);
3086 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4935 ev_run (EV_A_ EVRUN_NOWAIT);
3087 } 4936 }
3088 } 4937 }
3089} 4938}
3090 4939
3091static void 4940static void
… …
3094 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 4943 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3095 4944
3096 ev_embed_stop (EV_A_ w); 4945 ev_embed_stop (EV_A_ w);
3097 4946
3098 { 4947 {
3099 struct ev_loop *loop = w->other; 4948 EV_P = w->other;
3100 4949
3101 ev_loop_fork (EV_A); 4950 ev_loop_fork (EV_A);
3102 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4951 ev_run (EV_A_ EVRUN_NOWAIT);
3103 } 4952 }
3104 4953
3105 ev_embed_start (EV_A_ w); 4954 ev_embed_start (EV_A_ w);
3106} 4955}
3107 4956
… …
3112 ev_idle_stop (EV_A_ idle); 4961 ev_idle_stop (EV_A_ idle);
3113} 4962}
3114#endif 4963#endif
3115 4964
3116void 4965void
3117ev_embed_start (EV_P_ ev_embed *w) 4966ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
3118{ 4967{
3119 if (expect_false (ev_is_active (w))) 4968 if (ecb_expect_false (ev_is_active (w)))
3120 return; 4969 return;
3121 4970
3122 { 4971 {
3123 struct ev_loop *loop = w->other; 4972 EV_P = w->other;
3124 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4973 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
3125 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 4974 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3126 } 4975 }
3127 4976
3128 EV_FREQUENT_CHECK; 4977 EV_FREQUENT_CHECK;
… …
3143 4992
3144 EV_FREQUENT_CHECK; 4993 EV_FREQUENT_CHECK;
3145} 4994}
3146 4995
3147void 4996void
3148ev_embed_stop (EV_P_ ev_embed *w) 4997ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
3149{ 4998{
3150 clear_pending (EV_A_ (W)w); 4999 clear_pending (EV_A_ (W)w);
3151 if (expect_false (!ev_is_active (w))) 5000 if (ecb_expect_false (!ev_is_active (w)))
3152 return; 5001 return;
3153 5002
3154 EV_FREQUENT_CHECK; 5003 EV_FREQUENT_CHECK;
3155 5004
3156 ev_io_stop (EV_A_ &w->io); 5005 ev_io_stop (EV_A_ &w->io);
3157 ev_prepare_stop (EV_A_ &w->prepare); 5006 ev_prepare_stop (EV_A_ &w->prepare);
3158 ev_fork_stop (EV_A_ &w->fork); 5007 ev_fork_stop (EV_A_ &w->fork);
3159 5008
5009 ev_stop (EV_A_ (W)w);
5010
3160 EV_FREQUENT_CHECK; 5011 EV_FREQUENT_CHECK;
3161} 5012}
3162#endif 5013#endif
3163 5014
3164#if EV_FORK_ENABLE 5015#if EV_FORK_ENABLE
3165void 5016void
3166ev_fork_start (EV_P_ ev_fork *w) 5017ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
3167{ 5018{
3168 if (expect_false (ev_is_active (w))) 5019 if (ecb_expect_false (ev_is_active (w)))
3169 return; 5020 return;
3170 5021
3171 EV_FREQUENT_CHECK; 5022 EV_FREQUENT_CHECK;
3172 5023
3173 ev_start (EV_A_ (W)w, ++forkcnt); 5024 ev_start (EV_A_ (W)w, ++forkcnt);
3174 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 5025 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
3175 forks [forkcnt - 1] = w; 5026 forks [forkcnt - 1] = w;
3176 5027
3177 EV_FREQUENT_CHECK; 5028 EV_FREQUENT_CHECK;
3178} 5029}
3179 5030
3180void 5031void
3181ev_fork_stop (EV_P_ ev_fork *w) 5032ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
3182{ 5033{
3183 clear_pending (EV_A_ (W)w); 5034 clear_pending (EV_A_ (W)w);
3184 if (expect_false (!ev_is_active (w))) 5035 if (ecb_expect_false (!ev_is_active (w)))
3185 return; 5036 return;
3186 5037
3187 EV_FREQUENT_CHECK; 5038 EV_FREQUENT_CHECK;
3188 5039
3189 { 5040 {
… …
3197 5048
3198 EV_FREQUENT_CHECK; 5049 EV_FREQUENT_CHECK;
3199} 5050}
3200#endif 5051#endif
3201 5052
5053#if EV_CLEANUP_ENABLE
5054void
5055ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
5056{
5057 if (ecb_expect_false (ev_is_active (w)))
5058 return;
5059
5060 EV_FREQUENT_CHECK;
5061
5062 ev_start (EV_A_ (W)w, ++cleanupcnt);
5063 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
5064 cleanups [cleanupcnt - 1] = w;
5065
5066 /* cleanup watchers should never keep a refcount on the loop */
5067 ev_unref (EV_A);
5068 EV_FREQUENT_CHECK;
5069}
5070
5071void
5072ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
5073{
5074 clear_pending (EV_A_ (W)w);
5075 if (ecb_expect_false (!ev_is_active (w)))
5076 return;
5077
5078 EV_FREQUENT_CHECK;
5079 ev_ref (EV_A);
5080
5081 {
5082 int active = ev_active (w);
5083
5084 cleanups [active - 1] = cleanups [--cleanupcnt];
5085 ev_active (cleanups [active - 1]) = active;
5086 }
5087
5088 ev_stop (EV_A_ (W)w);
5089
5090 EV_FREQUENT_CHECK;
5091}
5092#endif
5093
3202#if EV_ASYNC_ENABLE 5094#if EV_ASYNC_ENABLE
3203void 5095void
3204ev_async_start (EV_P_ ev_async *w) 5096ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
3205{ 5097{
3206 if (expect_false (ev_is_active (w))) 5098 if (ecb_expect_false (ev_is_active (w)))
3207 return; 5099 return;
3208 5100
5101 w->sent = 0;
5102
3209 evpipe_init (EV_A); 5103 evpipe_init (EV_A);
3210 5104
3211 EV_FREQUENT_CHECK; 5105 EV_FREQUENT_CHECK;
3212 5106
3213 ev_start (EV_A_ (W)w, ++asynccnt); 5107 ev_start (EV_A_ (W)w, ++asynccnt);
3214 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 5108 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
3215 asyncs [asynccnt - 1] = w; 5109 asyncs [asynccnt - 1] = w;
3216 5110
3217 EV_FREQUENT_CHECK; 5111 EV_FREQUENT_CHECK;
3218} 5112}
3219 5113
3220void 5114void
3221ev_async_stop (EV_P_ ev_async *w) 5115ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
3222{ 5116{
3223 clear_pending (EV_A_ (W)w); 5117 clear_pending (EV_A_ (W)w);
3224 if (expect_false (!ev_is_active (w))) 5118 if (ecb_expect_false (!ev_is_active (w)))
3225 return; 5119 return;
3226 5120
3227 EV_FREQUENT_CHECK; 5121 EV_FREQUENT_CHECK;
3228 5122
3229 { 5123 {
… …
3237 5131
3238 EV_FREQUENT_CHECK; 5132 EV_FREQUENT_CHECK;
3239} 5133}
3240 5134
3241void 5135void
3242ev_async_send (EV_P_ ev_async *w) 5136ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
3243{ 5137{
3244 w->sent = 1; 5138 w->sent = 1;
3245 evpipe_write (EV_A_ &gotasync); 5139 evpipe_write (EV_A_ &async_pending);
3246} 5140}
3247#endif 5141#endif
3248 5142
3249/*****************************************************************************/ 5143/*****************************************************************************/
3250 5144
… …
3284 5178
3285 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5179 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3286} 5180}
3287 5181
3288void 5182void
3289ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 5183ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
3290{ 5184{
3291 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5185 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3292
3293 if (expect_false (!once))
3294 {
3295 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
3296 return;
3297 }
3298 5186
3299 once->cb = cb; 5187 once->cb = cb;
3300 once->arg = arg; 5188 once->arg = arg;
3301 5189
3302 ev_init (&once->io, once_cb_io); 5190 ev_init (&once->io, once_cb_io);
… …
3315} 5203}
3316 5204
3317/*****************************************************************************/ 5205/*****************************************************************************/
3318 5206
3319#if EV_WALK_ENABLE 5207#if EV_WALK_ENABLE
5208ecb_cold
3320void 5209void
3321ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 5210ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
3322{ 5211{
3323 int i, j; 5212 int i, j;
3324 ev_watcher_list *wl, *wn; 5213 ev_watcher_list *wl, *wn;
3325 5214
3326 if (types & (EV_IO | EV_EMBED)) 5215 if (types & (EV_IO | EV_EMBED))
… …
3369 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 5258 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3370#endif 5259#endif
3371 5260
3372#if EV_IDLE_ENABLE 5261#if EV_IDLE_ENABLE
3373 if (types & EV_IDLE) 5262 if (types & EV_IDLE)
3374 for (j = NUMPRI; i--; ) 5263 for (j = NUMPRI; j--; )
3375 for (i = idlecnt [j]; i--; ) 5264 for (i = idlecnt [j]; i--; )
3376 cb (EV_A_ EV_IDLE, idles [j][i]); 5265 cb (EV_A_ EV_IDLE, idles [j][i]);
3377#endif 5266#endif
3378 5267
3379#if EV_FORK_ENABLE 5268#if EV_FORK_ENABLE
… …
3387 if (types & EV_ASYNC) 5276 if (types & EV_ASYNC)
3388 for (i = asynccnt; i--; ) 5277 for (i = asynccnt; i--; )
3389 cb (EV_A_ EV_ASYNC, asyncs [i]); 5278 cb (EV_A_ EV_ASYNC, asyncs [i]);
3390#endif 5279#endif
3391 5280
5281#if EV_PREPARE_ENABLE
3392 if (types & EV_PREPARE) 5282 if (types & EV_PREPARE)
3393 for (i = preparecnt; i--; ) 5283 for (i = preparecnt; i--; )
3394#if EV_EMBED_ENABLE 5284# if EV_EMBED_ENABLE
3395 if (ev_cb (prepares [i]) != embed_prepare_cb) 5285 if (ev_cb (prepares [i]) != embed_prepare_cb)
3396#endif 5286# endif
3397 cb (EV_A_ EV_PREPARE, prepares [i]); 5287 cb (EV_A_ EV_PREPARE, prepares [i]);
5288#endif
3398 5289
5290#if EV_CHECK_ENABLE
3399 if (types & EV_CHECK) 5291 if (types & EV_CHECK)
3400 for (i = checkcnt; i--; ) 5292 for (i = checkcnt; i--; )
3401 cb (EV_A_ EV_CHECK, checks [i]); 5293 cb (EV_A_ EV_CHECK, checks [i]);
5294#endif
3402 5295
5296#if EV_SIGNAL_ENABLE
3403 if (types & EV_SIGNAL) 5297 if (types & EV_SIGNAL)
3404 for (i = 0; i < signalmax; ++i) 5298 for (i = 0; i < EV_NSIG - 1; ++i)
3405 for (wl = signals [i].head; wl; ) 5299 for (wl = signals [i].head; wl; )
3406 { 5300 {
3407 wn = wl->next; 5301 wn = wl->next;
3408 cb (EV_A_ EV_SIGNAL, wl); 5302 cb (EV_A_ EV_SIGNAL, wl);
3409 wl = wn; 5303 wl = wn;
3410 } 5304 }
5305#endif
3411 5306
5307#if EV_CHILD_ENABLE
3412 if (types & EV_CHILD) 5308 if (types & EV_CHILD)
3413 for (i = EV_PID_HASHSIZE; i--; ) 5309 for (i = (EV_PID_HASHSIZE); i--; )
3414 for (wl = childs [i]; wl; ) 5310 for (wl = childs [i]; wl; )
3415 { 5311 {
3416 wn = wl->next; 5312 wn = wl->next;
3417 cb (EV_A_ EV_CHILD, wl); 5313 cb (EV_A_ EV_CHILD, wl);
3418 wl = wn; 5314 wl = wn;
3419 } 5315 }
5316#endif
3420/* EV_STAT 0x00001000 /* stat data changed */ 5317/* EV_STAT 0x00001000 /* stat data changed */
3421/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 5318/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3422} 5319}
3423#endif 5320#endif
3424 5321
3425#if EV_MULTIPLICITY 5322#if EV_MULTIPLICITY
3426 #include "ev_wrap.h" 5323 #include "ev_wrap.h"
3427#endif 5324#endif
3428 5325
3429#ifdef __cplusplus
3430}
3431#endif
3432

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