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Comparing libev/ev.c (file contents):
Revision 1.302 by root, Thu Jul 16 15:08:08 2009 UTC vs.
Revision 1.509 by root, Sat Aug 17 05:30:16 2019 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007-2019 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
10 * 1. Redistributions of source code must retain the above copyright notice, 10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer. 11 * this list of conditions and the following disclaimer.
12 * 12 *
13 * 2. Redistributions in binary form must reproduce the above copyright 13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the 14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution. 15 * documentation and/or other materials provided with the distribution.
16 * 16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- 18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO 19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- 20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
… …
35 * and other provisions required by the GPL. If you do not delete the 35 * and other provisions required by the GPL. If you do not delete the
36 * provisions above, a recipient may use your version of this file under 36 * provisions above, a recipient may use your version of this file under
37 * either the BSD or the GPL. 37 * either the BSD or the GPL.
38 */ 38 */
39 39
40#ifdef __cplusplus
41extern "C" {
42#endif
43
44/* this big block deduces configuration from config.h */ 40/* this big block deduces configuration from config.h */
45#ifndef EV_STANDALONE 41#ifndef EV_STANDALONE
46# ifdef EV_CONFIG_H 42# ifdef EV_CONFIG_H
47# include EV_CONFIG_H 43# include EV_CONFIG_H
48# else 44# else
49# include "config.h" 45# include "config.h"
46# endif
47
48# if HAVE_FLOOR
49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1
51# endif
50# endif 52# endif
51 53
52# if HAVE_CLOCK_SYSCALL 54# if HAVE_CLOCK_SYSCALL
53# ifndef EV_USE_CLOCK_SYSCALL 55# ifndef EV_USE_CLOCK_SYSCALL
54# define EV_USE_CLOCK_SYSCALL 1 56# define EV_USE_CLOCK_SYSCALL 1
… …
57# endif 59# endif
58# ifndef EV_USE_MONOTONIC 60# ifndef EV_USE_MONOTONIC
59# define EV_USE_MONOTONIC 1 61# define EV_USE_MONOTONIC 1
60# endif 62# endif
61# endif 63# endif
62# elif !defined(EV_USE_CLOCK_SYSCALL) 64# elif !defined EV_USE_CLOCK_SYSCALL
63# define EV_USE_CLOCK_SYSCALL 0 65# define EV_USE_CLOCK_SYSCALL 0
64# endif 66# endif
65 67
66# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
67# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
… …
77# ifndef EV_USE_REALTIME 79# ifndef EV_USE_REALTIME
78# define EV_USE_REALTIME 0 80# define EV_USE_REALTIME 0
79# endif 81# endif
80# endif 82# endif
81 83
84# if HAVE_NANOSLEEP
82# ifndef EV_USE_NANOSLEEP 85# ifndef EV_USE_NANOSLEEP
83# if HAVE_NANOSLEEP
84# define EV_USE_NANOSLEEP 1 86# define EV_USE_NANOSLEEP EV_FEATURE_OS
87# endif
85# else 88# else
89# undef EV_USE_NANOSLEEP
86# define EV_USE_NANOSLEEP 0 90# define EV_USE_NANOSLEEP 0
91# endif
92
93# if HAVE_SELECT && HAVE_SYS_SELECT_H
94# ifndef EV_USE_SELECT
95# define EV_USE_SELECT EV_FEATURE_BACKENDS
87# endif 96# endif
97# else
98# undef EV_USE_SELECT
99# define EV_USE_SELECT 0
88# endif 100# endif
89 101
102# if HAVE_POLL && HAVE_POLL_H
90# ifndef EV_USE_SELECT 103# ifndef EV_USE_POLL
91# if HAVE_SELECT && HAVE_SYS_SELECT_H 104# define EV_USE_POLL EV_FEATURE_BACKENDS
92# define EV_USE_SELECT 1
93# else
94# define EV_USE_SELECT 0
95# endif 105# endif
96# endif
97
98# ifndef EV_USE_POLL
99# if HAVE_POLL && HAVE_POLL_H
100# define EV_USE_POLL 1
101# else 106# else
107# undef EV_USE_POLL
102# define EV_USE_POLL 0 108# define EV_USE_POLL 0
103# endif
104# endif 109# endif
105 110
106# ifndef EV_USE_EPOLL
107# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 111# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
108# define EV_USE_EPOLL 1 112# ifndef EV_USE_EPOLL
109# else 113# define EV_USE_EPOLL EV_FEATURE_BACKENDS
110# define EV_USE_EPOLL 0
111# endif 114# endif
115# else
116# undef EV_USE_EPOLL
117# define EV_USE_EPOLL 0
112# endif 118# endif
113 119
114# ifndef EV_USE_KQUEUE 120# if HAVE_LINUX_AIO_ABI_H
115# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 121# ifndef EV_USE_LINUXAIO
116# define EV_USE_KQUEUE 1 122# define EV_USE_LINUXAIO EV_FEATURE_BACKENDS
117# else
118# define EV_USE_KQUEUE 0
119# endif 123# endif
124# else
125# undef EV_USE_LINUXAIO
126# define EV_USE_LINUXAIO 0
120# endif 127# endif
121 128
122# ifndef EV_USE_PORT 129# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
123# if HAVE_PORT_H && HAVE_PORT_CREATE 130# ifndef EV_USE_KQUEUE
124# define EV_USE_PORT 1 131# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
125# else
126# define EV_USE_PORT 0
127# endif 132# endif
133# else
134# undef EV_USE_KQUEUE
135# define EV_USE_KQUEUE 0
128# endif 136# endif
129 137
138# if HAVE_PORT_H && HAVE_PORT_CREATE
130# ifndef EV_USE_INOTIFY 139# ifndef EV_USE_PORT
131# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 140# define EV_USE_PORT EV_FEATURE_BACKENDS
132# define EV_USE_INOTIFY 1
133# else
134# define EV_USE_INOTIFY 0
135# endif 141# endif
142# else
143# undef EV_USE_PORT
144# define EV_USE_PORT 0
136# endif 145# endif
137 146
147# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
138# ifndef EV_USE_EVENTFD 148# ifndef EV_USE_INOTIFY
139# if HAVE_EVENTFD 149# define EV_USE_INOTIFY EV_FEATURE_OS
140# define EV_USE_EVENTFD 1
141# else
142# define EV_USE_EVENTFD 0
143# endif 150# endif
151# else
152# undef EV_USE_INOTIFY
153# define EV_USE_INOTIFY 0
154# endif
155
156# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
157# ifndef EV_USE_SIGNALFD
158# define EV_USE_SIGNALFD EV_FEATURE_OS
159# endif
160# else
161# undef EV_USE_SIGNALFD
162# define EV_USE_SIGNALFD 0
163# endif
164
165# if HAVE_EVENTFD
166# ifndef EV_USE_EVENTFD
167# define EV_USE_EVENTFD EV_FEATURE_OS
168# endif
169# else
170# undef EV_USE_EVENTFD
171# define EV_USE_EVENTFD 0
144# endif 172# endif
145 173
146#endif 174#endif
147 175
148#include <math.h> 176/* OS X, in its infinite idiocy, actually HARDCODES
177 * a limit of 1024 into their select. Where people have brains,
178 * OS X engineers apparently have a vacuum. Or maybe they were
179 * ordered to have a vacuum, or they do anything for money.
180 * This might help. Or not.
181 * Note that this must be defined early, as other include files
182 * will rely on this define as well.
183 */
184#define _DARWIN_UNLIMITED_SELECT 1
185
149#include <stdlib.h> 186#include <stdlib.h>
187#include <string.h>
150#include <fcntl.h> 188#include <fcntl.h>
151#include <stddef.h> 189#include <stddef.h>
152 190
153#include <stdio.h> 191#include <stdio.h>
154 192
155#include <assert.h> 193#include <assert.h>
156#include <errno.h> 194#include <errno.h>
157#include <sys/types.h> 195#include <sys/types.h>
158#include <time.h> 196#include <time.h>
197#include <limits.h>
159 198
160#include <signal.h> 199#include <signal.h>
161 200
162#ifdef EV_H 201#ifdef EV_H
163# include EV_H 202# include EV_H
164#else 203#else
165# include "ev.h" 204# include "ev.h"
205#endif
206
207#if EV_NO_THREADS
208# undef EV_NO_SMP
209# define EV_NO_SMP 1
210# undef ECB_NO_THREADS
211# define ECB_NO_THREADS 1
212#endif
213#if EV_NO_SMP
214# undef EV_NO_SMP
215# define ECB_NO_SMP 1
166#endif 216#endif
167 217
168#ifndef _WIN32 218#ifndef _WIN32
169# include <sys/time.h> 219# include <sys/time.h>
170# include <sys/wait.h> 220# include <sys/wait.h>
171# include <unistd.h> 221# include <unistd.h>
172#else 222#else
173# include <io.h> 223# include <io.h>
174# define WIN32_LEAN_AND_MEAN 224# define WIN32_LEAN_AND_MEAN
225# include <winsock2.h>
175# include <windows.h> 226# include <windows.h>
176# ifndef EV_SELECT_IS_WINSOCKET 227# ifndef EV_SELECT_IS_WINSOCKET
177# define EV_SELECT_IS_WINSOCKET 1 228# define EV_SELECT_IS_WINSOCKET 1
178# endif 229# endif
230# undef EV_AVOID_STDIO
179#endif 231#endif
180 232
181/* this block tries to deduce configuration from header-defined symbols and defaults */ 233/* this block tries to deduce configuration from header-defined symbols and defaults */
182 234
235/* try to deduce the maximum number of signals on this platform */
236#if defined EV_NSIG
237/* use what's provided */
238#elif defined NSIG
239# define EV_NSIG (NSIG)
240#elif defined _NSIG
241# define EV_NSIG (_NSIG)
242#elif defined SIGMAX
243# define EV_NSIG (SIGMAX+1)
244#elif defined SIG_MAX
245# define EV_NSIG (SIG_MAX+1)
246#elif defined _SIG_MAX
247# define EV_NSIG (_SIG_MAX+1)
248#elif defined MAXSIG
249# define EV_NSIG (MAXSIG+1)
250#elif defined MAX_SIG
251# define EV_NSIG (MAX_SIG+1)
252#elif defined SIGARRAYSIZE
253# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
254#elif defined _sys_nsig
255# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
256#else
257# define EV_NSIG (8 * sizeof (sigset_t) + 1)
258#endif
259
260#ifndef EV_USE_FLOOR
261# define EV_USE_FLOOR 0
262#endif
263
183#ifndef EV_USE_CLOCK_SYSCALL 264#ifndef EV_USE_CLOCK_SYSCALL
184# if __linux && __GLIBC__ >= 2 265# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
185# define EV_USE_CLOCK_SYSCALL 1 266# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
186# else 267# else
187# define EV_USE_CLOCK_SYSCALL 0 268# define EV_USE_CLOCK_SYSCALL 0
188# endif 269# endif
189#endif 270#endif
190 271
272#if !(_POSIX_TIMERS > 0)
273# ifndef EV_USE_MONOTONIC
274# define EV_USE_MONOTONIC 0
275# endif
276# ifndef EV_USE_REALTIME
277# define EV_USE_REALTIME 0
278# endif
279#endif
280
191#ifndef EV_USE_MONOTONIC 281#ifndef EV_USE_MONOTONIC
192# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 282# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
193# define EV_USE_MONOTONIC 1 283# define EV_USE_MONOTONIC EV_FEATURE_OS
194# else 284# else
195# define EV_USE_MONOTONIC 0 285# define EV_USE_MONOTONIC 0
196# endif 286# endif
197#endif 287#endif
198 288
… …
200# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 290# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
201#endif 291#endif
202 292
203#ifndef EV_USE_NANOSLEEP 293#ifndef EV_USE_NANOSLEEP
204# if _POSIX_C_SOURCE >= 199309L 294# if _POSIX_C_SOURCE >= 199309L
205# define EV_USE_NANOSLEEP 1 295# define EV_USE_NANOSLEEP EV_FEATURE_OS
206# else 296# else
207# define EV_USE_NANOSLEEP 0 297# define EV_USE_NANOSLEEP 0
208# endif 298# endif
209#endif 299#endif
210 300
211#ifndef EV_USE_SELECT 301#ifndef EV_USE_SELECT
212# define EV_USE_SELECT 1 302# define EV_USE_SELECT EV_FEATURE_BACKENDS
213#endif 303#endif
214 304
215#ifndef EV_USE_POLL 305#ifndef EV_USE_POLL
216# ifdef _WIN32 306# ifdef _WIN32
217# define EV_USE_POLL 0 307# define EV_USE_POLL 0
218# else 308# else
219# define EV_USE_POLL 1 309# define EV_USE_POLL EV_FEATURE_BACKENDS
220# endif 310# endif
221#endif 311#endif
222 312
223#ifndef EV_USE_EPOLL 313#ifndef EV_USE_EPOLL
224# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 314# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
225# define EV_USE_EPOLL 1 315# define EV_USE_EPOLL EV_FEATURE_BACKENDS
226# else 316# else
227# define EV_USE_EPOLL 0 317# define EV_USE_EPOLL 0
228# endif 318# endif
229#endif 319#endif
230 320
… …
234 324
235#ifndef EV_USE_PORT 325#ifndef EV_USE_PORT
236# define EV_USE_PORT 0 326# define EV_USE_PORT 0
237#endif 327#endif
238 328
329#ifndef EV_USE_LINUXAIO
330# if __linux /* libev currently assumes linux/aio_abi.h is always available on linux */
331# define EV_USE_LINUXAIO 1
332# else
333# define EV_USE_LINUXAIO 0
334# endif
335#endif
336
337#ifndef EV_USE_IOURING
338# if __linux
339# define EV_USE_IOURING 0
340# else
341# define EV_USE_IOURING 0
342# endif
343#endif
344
239#ifndef EV_USE_INOTIFY 345#ifndef EV_USE_INOTIFY
240# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 346# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
241# define EV_USE_INOTIFY 1 347# define EV_USE_INOTIFY EV_FEATURE_OS
242# else 348# else
243# define EV_USE_INOTIFY 0 349# define EV_USE_INOTIFY 0
244# endif 350# endif
245#endif 351#endif
246 352
247#ifndef EV_PID_HASHSIZE 353#ifndef EV_PID_HASHSIZE
248# if EV_MINIMAL 354# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
249# define EV_PID_HASHSIZE 1
250# else
251# define EV_PID_HASHSIZE 16
252# endif
253#endif 355#endif
254 356
255#ifndef EV_INOTIFY_HASHSIZE 357#ifndef EV_INOTIFY_HASHSIZE
256# if EV_MINIMAL 358# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
257# define EV_INOTIFY_HASHSIZE 1
258# else
259# define EV_INOTIFY_HASHSIZE 16
260# endif
261#endif 359#endif
262 360
263#ifndef EV_USE_EVENTFD 361#ifndef EV_USE_EVENTFD
264# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 362# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
265# define EV_USE_EVENTFD 1 363# define EV_USE_EVENTFD EV_FEATURE_OS
266# else 364# else
267# define EV_USE_EVENTFD 0 365# define EV_USE_EVENTFD 0
366# endif
367#endif
368
369#ifndef EV_USE_SIGNALFD
370# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
371# define EV_USE_SIGNALFD EV_FEATURE_OS
372# else
373# define EV_USE_SIGNALFD 0
268# endif 374# endif
269#endif 375#endif
270 376
271#if 0 /* debugging */ 377#if 0 /* debugging */
272# define EV_VERIFY 3 378# define EV_VERIFY 3
273# define EV_USE_4HEAP 1 379# define EV_USE_4HEAP 1
274# define EV_HEAP_CACHE_AT 1 380# define EV_HEAP_CACHE_AT 1
275#endif 381#endif
276 382
277#ifndef EV_VERIFY 383#ifndef EV_VERIFY
278# define EV_VERIFY !EV_MINIMAL 384# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
279#endif 385#endif
280 386
281#ifndef EV_USE_4HEAP 387#ifndef EV_USE_4HEAP
282# define EV_USE_4HEAP !EV_MINIMAL 388# define EV_USE_4HEAP EV_FEATURE_DATA
283#endif 389#endif
284 390
285#ifndef EV_HEAP_CACHE_AT 391#ifndef EV_HEAP_CACHE_AT
286# define EV_HEAP_CACHE_AT !EV_MINIMAL 392# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
393#endif
394
395#ifdef __ANDROID__
396/* supposedly, android doesn't typedef fd_mask */
397# undef EV_USE_SELECT
398# define EV_USE_SELECT 0
399/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
400# undef EV_USE_CLOCK_SYSCALL
401# define EV_USE_CLOCK_SYSCALL 0
402#endif
403
404/* aix's poll.h seems to cause lots of trouble */
405#ifdef _AIX
406/* AIX has a completely broken poll.h header */
407# undef EV_USE_POLL
408# define EV_USE_POLL 0
287#endif 409#endif
288 410
289/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 411/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
290/* which makes programs even slower. might work on other unices, too. */ 412/* which makes programs even slower. might work on other unices, too. */
291#if EV_USE_CLOCK_SYSCALL 413#if EV_USE_CLOCK_SYSCALL
292# include <syscall.h> 414# include <sys/syscall.h>
293# ifdef SYS_clock_gettime 415# ifdef SYS_clock_gettime
294# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 416# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
295# undef EV_USE_MONOTONIC 417# undef EV_USE_MONOTONIC
296# define EV_USE_MONOTONIC 1 418# define EV_USE_MONOTONIC 1
419# define EV_NEED_SYSCALL 1
297# else 420# else
298# undef EV_USE_CLOCK_SYSCALL 421# undef EV_USE_CLOCK_SYSCALL
299# define EV_USE_CLOCK_SYSCALL 0 422# define EV_USE_CLOCK_SYSCALL 0
300# endif 423# endif
301#endif 424#endif
… …
316# undef EV_USE_INOTIFY 439# undef EV_USE_INOTIFY
317# define EV_USE_INOTIFY 0 440# define EV_USE_INOTIFY 0
318#endif 441#endif
319 442
320#if !EV_USE_NANOSLEEP 443#if !EV_USE_NANOSLEEP
321# ifndef _WIN32 444/* hp-ux has it in sys/time.h, which we unconditionally include above */
445# if !defined _WIN32 && !defined __hpux
322# include <sys/select.h> 446# include <sys/select.h>
323# endif 447# endif
324#endif 448#endif
325 449
450#if EV_USE_LINUXAIO
451# include <sys/syscall.h>
452# if SYS_io_getevents && EV_USE_EPOLL /* linuxaio backend requires epoll backend */
453# define EV_NEED_SYSCALL 1
454# else
455# undef EV_USE_LINUXAIO
456# define EV_USE_LINUXAIO 0
457# endif
458#endif
459
460#if EV_USE_IOURING
461# include <sys/syscall.h>
462# if !SYS_io_uring_setup && __linux && !__alpha
463# define SYS_io_uring_setup 425
464# define SYS_io_uring_enter 426
465# define SYS_io_uring_wregister 427
466# endif
467# if SYS_io_uring_setup && EV_USE_EPOLL /* iouring backend requires epoll backend */
468# define EV_NEED_SYSCALL 1
469# else
470# undef EV_USE_IOURING
471# define EV_USE_IOURING 0
472# endif
473#endif
474
326#if EV_USE_INOTIFY 475#if EV_USE_INOTIFY
327# include <sys/utsname.h>
328# include <sys/statfs.h> 476# include <sys/statfs.h>
329# include <sys/inotify.h> 477# include <sys/inotify.h>
330/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 478/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
331# ifndef IN_DONT_FOLLOW 479# ifndef IN_DONT_FOLLOW
332# undef EV_USE_INOTIFY 480# undef EV_USE_INOTIFY
333# define EV_USE_INOTIFY 0 481# define EV_USE_INOTIFY 0
334# endif 482# endif
335#endif 483#endif
336 484
337#if EV_SELECT_IS_WINSOCKET
338# include <winsock.h>
339#endif
340
341#if EV_USE_EVENTFD 485#if EV_USE_EVENTFD
342/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 486/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
343# include <stdint.h> 487# include <stdint.h>
344# ifdef __cplusplus 488# ifndef EFD_NONBLOCK
345extern "C" { 489# define EFD_NONBLOCK O_NONBLOCK
346# endif 490# endif
347int eventfd (unsigned int initval, int flags); 491# ifndef EFD_CLOEXEC
348# ifdef __cplusplus 492# ifdef O_CLOEXEC
349} 493# define EFD_CLOEXEC O_CLOEXEC
494# else
495# define EFD_CLOEXEC 02000000
496# endif
350# endif 497# endif
498EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
499#endif
500
501#if EV_USE_SIGNALFD
502/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
503# include <stdint.h>
504# ifndef SFD_NONBLOCK
505# define SFD_NONBLOCK O_NONBLOCK
351#endif 506# endif
507# ifndef SFD_CLOEXEC
508# ifdef O_CLOEXEC
509# define SFD_CLOEXEC O_CLOEXEC
510# else
511# define SFD_CLOEXEC 02000000
512# endif
513# endif
514EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
352 515
353/**/ 516struct signalfd_siginfo
517{
518 uint32_t ssi_signo;
519 char pad[128 - sizeof (uint32_t)];
520};
521#endif
522
523/*****************************************************************************/
354 524
355#if EV_VERIFY >= 3 525#if EV_VERIFY >= 3
356# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 526# define EV_FREQUENT_CHECK ev_verify (EV_A)
357#else 527#else
358# define EV_FREQUENT_CHECK do { } while (0) 528# define EV_FREQUENT_CHECK do { } while (0)
359#endif 529#endif
360 530
361/* 531/*
362 * This is used to avoid floating point rounding problems. 532 * This is used to work around floating point rounding problems.
363 * It is added to ev_rt_now when scheduling periodics
364 * to ensure progress, time-wise, even when rounding
365 * errors are against us.
366 * This value is good at least till the year 4000. 533 * This value is good at least till the year 4000.
367 * Better solutions welcome.
368 */ 534 */
369#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 535#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
536/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
370 537
371#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 538#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
372#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 539#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
373/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
374 540
541/* find a portable timestamp that is "always" in the future but fits into time_t.
542 * this is quite hard, and we are mostly guessing - we handle 32 bit signed/unsigned time_t,
543 * and sizes larger than 32 bit, and maybe the unlikely floating point time_t */
544#define EV_TSTAMP_HUGE \
545 (sizeof (time_t) >= 8 ? 10000000000000. \
546 : 0 < (time_t)4294967295 ? 4294967295. \
547 : 2147483647.) \
548
549#ifndef EV_TS_CONST
550# define EV_TS_CONST(nv) nv
551# define EV_TS_TO_MSEC(a) a * 1e3 + 0.9999
552# define EV_TS_FROM_USEC(us) us * 1e-6
553# define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
554# define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
555# define EV_TV_GET(tv) ((tv).tv_sec + (tv).tv_usec * 1e-6)
556# define EV_TS_GET(ts) ((ts).tv_sec + (ts).tv_nsec * 1e-9)
557#endif
558
559/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
560/* ECB.H BEGIN */
561/*
562 * libecb - http://software.schmorp.de/pkg/libecb
563 *
564 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
565 * Copyright (©) 2011 Emanuele Giaquinta
566 * All rights reserved.
567 *
568 * Redistribution and use in source and binary forms, with or without modifica-
569 * tion, are permitted provided that the following conditions are met:
570 *
571 * 1. Redistributions of source code must retain the above copyright notice,
572 * this list of conditions and the following disclaimer.
573 *
574 * 2. Redistributions in binary form must reproduce the above copyright
575 * notice, this list of conditions and the following disclaimer in the
576 * documentation and/or other materials provided with the distribution.
577 *
578 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
579 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
580 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
581 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
582 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
583 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
584 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
585 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
586 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
587 * OF THE POSSIBILITY OF SUCH DAMAGE.
588 *
589 * Alternatively, the contents of this file may be used under the terms of
590 * the GNU General Public License ("GPL") version 2 or any later version,
591 * in which case the provisions of the GPL are applicable instead of
592 * the above. If you wish to allow the use of your version of this file
593 * only under the terms of the GPL and not to allow others to use your
594 * version of this file under the BSD license, indicate your decision
595 * by deleting the provisions above and replace them with the notice
596 * and other provisions required by the GPL. If you do not delete the
597 * provisions above, a recipient may use your version of this file under
598 * either the BSD or the GPL.
599 */
600
601#ifndef ECB_H
602#define ECB_H
603
604/* 16 bits major, 16 bits minor */
605#define ECB_VERSION 0x00010006
606
607#ifdef _WIN32
608 typedef signed char int8_t;
609 typedef unsigned char uint8_t;
610 typedef signed short int16_t;
611 typedef unsigned short uint16_t;
612 typedef signed int int32_t;
613 typedef unsigned int uint32_t;
375#if __GNUC__ >= 4 614 #if __GNUC__
376# define expect(expr,value) __builtin_expect ((expr),(value)) 615 typedef signed long long int64_t;
377# define noinline __attribute__ ((noinline)) 616 typedef unsigned long long uint64_t;
617 #else /* _MSC_VER || __BORLANDC__ */
618 typedef signed __int64 int64_t;
619 typedef unsigned __int64 uint64_t;
620 #endif
621 #ifdef _WIN64
622 #define ECB_PTRSIZE 8
623 typedef uint64_t uintptr_t;
624 typedef int64_t intptr_t;
625 #else
626 #define ECB_PTRSIZE 4
627 typedef uint32_t uintptr_t;
628 typedef int32_t intptr_t;
629 #endif
378#else 630#else
379# define expect(expr,value) (expr) 631 #include <inttypes.h>
380# define noinline 632 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
381# if __STDC_VERSION__ < 199901L && __GNUC__ < 2 633 #define ECB_PTRSIZE 8
382# define inline 634 #else
635 #define ECB_PTRSIZE 4
636 #endif
383# endif 637#endif
638
639#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
640#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
641
642/* work around x32 idiocy by defining proper macros */
643#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
644 #if _ILP32
645 #define ECB_AMD64_X32 1
646 #else
647 #define ECB_AMD64 1
384#endif 648 #endif
649#endif
385 650
386#define expect_false(expr) expect ((expr) != 0, 0) 651/* many compilers define _GNUC_ to some versions but then only implement
387#define expect_true(expr) expect ((expr) != 0, 1) 652 * what their idiot authors think are the "more important" extensions,
388#define inline_size static inline 653 * causing enormous grief in return for some better fake benchmark numbers.
389 654 * or so.
390#if EV_MINIMAL 655 * we try to detect these and simply assume they are not gcc - if they have
391# define inline_speed static noinline 656 * an issue with that they should have done it right in the first place.
657 */
658#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
659 #define ECB_GCC_VERSION(major,minor) 0
392#else 660#else
661 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
662#endif
663
664#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
665
666#if __clang__ && defined __has_builtin
667 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
668#else
669 #define ECB_CLANG_BUILTIN(x) 0
670#endif
671
672#if __clang__ && defined __has_extension
673 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
674#else
675 #define ECB_CLANG_EXTENSION(x) 0
676#endif
677
678#define ECB_CPP (__cplusplus+0)
679#define ECB_CPP11 (__cplusplus >= 201103L)
680#define ECB_CPP14 (__cplusplus >= 201402L)
681#define ECB_CPP17 (__cplusplus >= 201703L)
682
683#if ECB_CPP
684 #define ECB_C 0
685 #define ECB_STDC_VERSION 0
686#else
687 #define ECB_C 1
688 #define ECB_STDC_VERSION __STDC_VERSION__
689#endif
690
691#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
692#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
693#define ECB_C17 (ECB_STDC_VERSION >= 201710L)
694
695#if ECB_CPP
696 #define ECB_EXTERN_C extern "C"
697 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
698 #define ECB_EXTERN_C_END }
699#else
700 #define ECB_EXTERN_C extern
701 #define ECB_EXTERN_C_BEG
702 #define ECB_EXTERN_C_END
703#endif
704
705/*****************************************************************************/
706
707/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
708/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
709
710#if ECB_NO_THREADS
711 #define ECB_NO_SMP 1
712#endif
713
714#if ECB_NO_SMP
715 #define ECB_MEMORY_FENCE do { } while (0)
716#endif
717
718/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
719#if __xlC__ && ECB_CPP
720 #include <builtins.h>
721#endif
722
723#if 1400 <= _MSC_VER
724 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
725#endif
726
727#ifndef ECB_MEMORY_FENCE
728 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
729 #define ECB_MEMORY_FENCE_RELAXED __asm__ __volatile__ ("" : : : "memory")
730 #if __i386 || __i386__
731 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
732 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
733 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
734 #elif ECB_GCC_AMD64
735 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
736 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
737 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
738 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
739 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
740 #elif defined __ARM_ARCH_2__ \
741 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
742 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
743 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
744 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
745 || defined __ARM_ARCH_5TEJ__
746 /* should not need any, unless running old code on newer cpu - arm doesn't support that */
747 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
748 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
749 || defined __ARM_ARCH_6T2__
750 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
751 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
752 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
753 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
754 #elif __aarch64__
755 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
756 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
757 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
758 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
759 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
760 #elif defined __s390__ || defined __s390x__
761 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
762 #elif defined __mips__
763 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
764 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
765 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
766 #elif defined __alpha__
767 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
768 #elif defined __hppa__
769 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
770 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
771 #elif defined __ia64__
772 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
773 #elif defined __m68k__
774 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
775 #elif defined __m88k__
776 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
777 #elif defined __sh__
778 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
779 #endif
780 #endif
781#endif
782
783#ifndef ECB_MEMORY_FENCE
784 #if ECB_GCC_VERSION(4,7)
785 /* see comment below (stdatomic.h) about the C11 memory model. */
786 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
787 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
788 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
789 #define ECB_MEMORY_FENCE_RELAXED __atomic_thread_fence (__ATOMIC_RELAXED)
790
791 #elif ECB_CLANG_EXTENSION(c_atomic)
792 /* see comment below (stdatomic.h) about the C11 memory model. */
793 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
794 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
795 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
796 #define ECB_MEMORY_FENCE_RELAXED __c11_atomic_thread_fence (__ATOMIC_RELAXED)
797
798 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
799 #define ECB_MEMORY_FENCE __sync_synchronize ()
800 #elif _MSC_VER >= 1500 /* VC++ 2008 */
801 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
802 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
803 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
804 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
805 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
806 #elif _MSC_VER >= 1400 /* VC++ 2005 */
807 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
808 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
809 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
810 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
811 #elif defined _WIN32
812 #include <WinNT.h>
813 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
814 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
815 #include <mbarrier.h>
816 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
817 #define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier ()
818 #define ECB_MEMORY_FENCE_RELEASE __machine_rel_barrier ()
819 #define ECB_MEMORY_FENCE_RELAXED __compiler_barrier ()
820 #elif __xlC__
821 #define ECB_MEMORY_FENCE __sync ()
822 #endif
823#endif
824
825#ifndef ECB_MEMORY_FENCE
826 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
827 /* we assume that these memory fences work on all variables/all memory accesses, */
828 /* not just C11 atomics and atomic accesses */
829 #include <stdatomic.h>
830 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
831 #define ECB_MEMORY_FENCE_ACQUIRE atomic_thread_fence (memory_order_acquire)
832 #define ECB_MEMORY_FENCE_RELEASE atomic_thread_fence (memory_order_release)
833 #endif
834#endif
835
836#ifndef ECB_MEMORY_FENCE
837 #if !ECB_AVOID_PTHREADS
838 /*
839 * if you get undefined symbol references to pthread_mutex_lock,
840 * or failure to find pthread.h, then you should implement
841 * the ECB_MEMORY_FENCE operations for your cpu/compiler
842 * OR provide pthread.h and link against the posix thread library
843 * of your system.
844 */
845 #include <pthread.h>
846 #define ECB_NEEDS_PTHREADS 1
847 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
848
849 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
850 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
851 #endif
852#endif
853
854#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
855 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
856#endif
857
858#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
859 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
860#endif
861
862#if !defined ECB_MEMORY_FENCE_RELAXED && defined ECB_MEMORY_FENCE
863 #define ECB_MEMORY_FENCE_RELAXED ECB_MEMORY_FENCE /* very heavy-handed */
864#endif
865
866/*****************************************************************************/
867
868#if ECB_CPP
869 #define ecb_inline static inline
870#elif ECB_GCC_VERSION(2,5)
871 #define ecb_inline static __inline__
872#elif ECB_C99
873 #define ecb_inline static inline
874#else
875 #define ecb_inline static
876#endif
877
878#if ECB_GCC_VERSION(3,3)
879 #define ecb_restrict __restrict__
880#elif ECB_C99
881 #define ecb_restrict restrict
882#else
883 #define ecb_restrict
884#endif
885
886typedef int ecb_bool;
887
888#define ECB_CONCAT_(a, b) a ## b
889#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
890#define ECB_STRINGIFY_(a) # a
891#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
892#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
893
894#define ecb_function_ ecb_inline
895
896#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
897 #define ecb_attribute(attrlist) __attribute__ (attrlist)
898#else
899 #define ecb_attribute(attrlist)
900#endif
901
902#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
903 #define ecb_is_constant(expr) __builtin_constant_p (expr)
904#else
905 /* possible C11 impl for integral types
906 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
907 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
908
909 #define ecb_is_constant(expr) 0
910#endif
911
912#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
913 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
914#else
915 #define ecb_expect(expr,value) (expr)
916#endif
917
918#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
919 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
920#else
921 #define ecb_prefetch(addr,rw,locality)
922#endif
923
924/* no emulation for ecb_decltype */
925#if ECB_CPP11
926 // older implementations might have problems with decltype(x)::type, work around it
927 template<class T> struct ecb_decltype_t { typedef T type; };
928 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
929#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
930 #define ecb_decltype(x) __typeof__ (x)
931#endif
932
933#if _MSC_VER >= 1300
934 #define ecb_deprecated __declspec (deprecated)
935#else
936 #define ecb_deprecated ecb_attribute ((__deprecated__))
937#endif
938
939#if _MSC_VER >= 1500
940 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
941#elif ECB_GCC_VERSION(4,5)
942 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
943#else
944 #define ecb_deprecated_message(msg) ecb_deprecated
945#endif
946
947#if _MSC_VER >= 1400
948 #define ecb_noinline __declspec (noinline)
949#else
950 #define ecb_noinline ecb_attribute ((__noinline__))
951#endif
952
953#define ecb_unused ecb_attribute ((__unused__))
954#define ecb_const ecb_attribute ((__const__))
955#define ecb_pure ecb_attribute ((__pure__))
956
957#if ECB_C11 || __IBMC_NORETURN
958 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
959 #define ecb_noreturn _Noreturn
960#elif ECB_CPP11
961 #define ecb_noreturn [[noreturn]]
962#elif _MSC_VER >= 1200
963 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
964 #define ecb_noreturn __declspec (noreturn)
965#else
966 #define ecb_noreturn ecb_attribute ((__noreturn__))
967#endif
968
969#if ECB_GCC_VERSION(4,3)
970 #define ecb_artificial ecb_attribute ((__artificial__))
971 #define ecb_hot ecb_attribute ((__hot__))
972 #define ecb_cold ecb_attribute ((__cold__))
973#else
974 #define ecb_artificial
975 #define ecb_hot
976 #define ecb_cold
977#endif
978
979/* put around conditional expressions if you are very sure that the */
980/* expression is mostly true or mostly false. note that these return */
981/* booleans, not the expression. */
982#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
983#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
984/* for compatibility to the rest of the world */
985#define ecb_likely(expr) ecb_expect_true (expr)
986#define ecb_unlikely(expr) ecb_expect_false (expr)
987
988/* count trailing zero bits and count # of one bits */
989#if ECB_GCC_VERSION(3,4) \
990 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
991 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
992 && ECB_CLANG_BUILTIN(__builtin_popcount))
993 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
994 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
995 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
996 #define ecb_ctz32(x) __builtin_ctz (x)
997 #define ecb_ctz64(x) __builtin_ctzll (x)
998 #define ecb_popcount32(x) __builtin_popcount (x)
999 /* no popcountll */
1000#else
1001 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
1002 ecb_function_ ecb_const int
1003 ecb_ctz32 (uint32_t x)
1004 {
1005#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1006 unsigned long r;
1007 _BitScanForward (&r, x);
1008 return (int)r;
1009#else
1010 int r = 0;
1011
1012 x &= ~x + 1; /* this isolates the lowest bit */
1013
1014#if ECB_branchless_on_i386
1015 r += !!(x & 0xaaaaaaaa) << 0;
1016 r += !!(x & 0xcccccccc) << 1;
1017 r += !!(x & 0xf0f0f0f0) << 2;
1018 r += !!(x & 0xff00ff00) << 3;
1019 r += !!(x & 0xffff0000) << 4;
1020#else
1021 if (x & 0xaaaaaaaa) r += 1;
1022 if (x & 0xcccccccc) r += 2;
1023 if (x & 0xf0f0f0f0) r += 4;
1024 if (x & 0xff00ff00) r += 8;
1025 if (x & 0xffff0000) r += 16;
1026#endif
1027
1028 return r;
1029#endif
1030 }
1031
1032 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
1033 ecb_function_ ecb_const int
1034 ecb_ctz64 (uint64_t x)
1035 {
1036#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1037 unsigned long r;
1038 _BitScanForward64 (&r, x);
1039 return (int)r;
1040#else
1041 int shift = x & 0xffffffff ? 0 : 32;
1042 return ecb_ctz32 (x >> shift) + shift;
1043#endif
1044 }
1045
1046 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
1047 ecb_function_ ecb_const int
1048 ecb_popcount32 (uint32_t x)
1049 {
1050 x -= (x >> 1) & 0x55555555;
1051 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
1052 x = ((x >> 4) + x) & 0x0f0f0f0f;
1053 x *= 0x01010101;
1054
1055 return x >> 24;
1056 }
1057
1058 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
1059 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
1060 {
1061#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1062 unsigned long r;
1063 _BitScanReverse (&r, x);
1064 return (int)r;
1065#else
1066 int r = 0;
1067
1068 if (x >> 16) { x >>= 16; r += 16; }
1069 if (x >> 8) { x >>= 8; r += 8; }
1070 if (x >> 4) { x >>= 4; r += 4; }
1071 if (x >> 2) { x >>= 2; r += 2; }
1072 if (x >> 1) { r += 1; }
1073
1074 return r;
1075#endif
1076 }
1077
1078 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
1079 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
1080 {
1081#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1082 unsigned long r;
1083 _BitScanReverse64 (&r, x);
1084 return (int)r;
1085#else
1086 int r = 0;
1087
1088 if (x >> 32) { x >>= 32; r += 32; }
1089
1090 return r + ecb_ld32 (x);
1091#endif
1092 }
1093#endif
1094
1095ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
1096ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
1097ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
1098ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
1099
1100ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
1101ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
1102{
1103 return ( (x * 0x0802U & 0x22110U)
1104 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
1105}
1106
1107ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
1108ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
1109{
1110 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
1111 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
1112 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
1113 x = ( x >> 8 ) | ( x << 8);
1114
1115 return x;
1116}
1117
1118ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
1119ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
1120{
1121 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
1122 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
1123 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
1124 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
1125 x = ( x >> 16 ) | ( x << 16);
1126
1127 return x;
1128}
1129
1130/* popcount64 is only available on 64 bit cpus as gcc builtin */
1131/* so for this version we are lazy */
1132ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
1133ecb_function_ ecb_const int
1134ecb_popcount64 (uint64_t x)
1135{
1136 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
1137}
1138
1139ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
1140ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
1141ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
1142ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
1143ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
1144ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
1145ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
1146ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
1147
1148ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
1149ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
1150ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
1151ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
1152ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
1153ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
1154ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
1155ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
1156
1157#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1158 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1159 #define ecb_bswap16(x) __builtin_bswap16 (x)
1160 #else
1161 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1162 #endif
1163 #define ecb_bswap32(x) __builtin_bswap32 (x)
1164 #define ecb_bswap64(x) __builtin_bswap64 (x)
1165#elif _MSC_VER
1166 #include <stdlib.h>
1167 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1168 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1169 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
1170#else
1171 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
1172 ecb_function_ ecb_const uint16_t
1173 ecb_bswap16 (uint16_t x)
1174 {
1175 return ecb_rotl16 (x, 8);
1176 }
1177
1178 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
1179 ecb_function_ ecb_const uint32_t
1180 ecb_bswap32 (uint32_t x)
1181 {
1182 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
1183 }
1184
1185 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
1186 ecb_function_ ecb_const uint64_t
1187 ecb_bswap64 (uint64_t x)
1188 {
1189 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
1190 }
1191#endif
1192
1193#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
1194 #define ecb_unreachable() __builtin_unreachable ()
1195#else
1196 /* this seems to work fine, but gcc always emits a warning for it :/ */
1197 ecb_inline ecb_noreturn void ecb_unreachable (void);
1198 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
1199#endif
1200
1201/* try to tell the compiler that some condition is definitely true */
1202#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
1203
1204ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
1205ecb_inline ecb_const uint32_t
1206ecb_byteorder_helper (void)
1207{
1208 /* the union code still generates code under pressure in gcc, */
1209 /* but less than using pointers, and always seems to */
1210 /* successfully return a constant. */
1211 /* the reason why we have this horrible preprocessor mess */
1212 /* is to avoid it in all cases, at least on common architectures */
1213 /* or when using a recent enough gcc version (>= 4.6) */
1214#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1215 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1216 #define ECB_LITTLE_ENDIAN 1
1217 return 0x44332211;
1218#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1219 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1220 #define ECB_BIG_ENDIAN 1
1221 return 0x11223344;
1222#else
1223 union
1224 {
1225 uint8_t c[4];
1226 uint32_t u;
1227 } u = { 0x11, 0x22, 0x33, 0x44 };
1228 return u.u;
1229#endif
1230}
1231
1232ecb_inline ecb_const ecb_bool ecb_big_endian (void);
1233ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
1234ecb_inline ecb_const ecb_bool ecb_little_endian (void);
1235ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
1236
1237#if ECB_GCC_VERSION(3,0) || ECB_C99
1238 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1239#else
1240 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1241#endif
1242
1243#if ECB_CPP
1244 template<typename T>
1245 static inline T ecb_div_rd (T val, T div)
1246 {
1247 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1248 }
1249 template<typename T>
1250 static inline T ecb_div_ru (T val, T div)
1251 {
1252 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1253 }
1254#else
1255 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1256 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1257#endif
1258
1259#if ecb_cplusplus_does_not_suck
1260 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1261 template<typename T, int N>
1262 static inline int ecb_array_length (const T (&arr)[N])
1263 {
1264 return N;
1265 }
1266#else
1267 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1268#endif
1269
1270ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1271ecb_function_ ecb_const uint32_t
1272ecb_binary16_to_binary32 (uint32_t x)
1273{
1274 unsigned int s = (x & 0x8000) << (31 - 15);
1275 int e = (x >> 10) & 0x001f;
1276 unsigned int m = x & 0x03ff;
1277
1278 if (ecb_expect_false (e == 31))
1279 /* infinity or NaN */
1280 e = 255 - (127 - 15);
1281 else if (ecb_expect_false (!e))
1282 {
1283 if (ecb_expect_true (!m))
1284 /* zero, handled by code below by forcing e to 0 */
1285 e = 0 - (127 - 15);
1286 else
1287 {
1288 /* subnormal, renormalise */
1289 unsigned int s = 10 - ecb_ld32 (m);
1290
1291 m = (m << s) & 0x3ff; /* mask implicit bit */
1292 e -= s - 1;
1293 }
1294 }
1295
1296 /* e and m now are normalised, or zero, (or inf or nan) */
1297 e += 127 - 15;
1298
1299 return s | (e << 23) | (m << (23 - 10));
1300}
1301
1302ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1303ecb_function_ ecb_const uint16_t
1304ecb_binary32_to_binary16 (uint32_t x)
1305{
1306 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1307 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1308 unsigned int m = x & 0x007fffff;
1309
1310 x &= 0x7fffffff;
1311
1312 /* if it's within range of binary16 normals, use fast path */
1313 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1314 {
1315 /* mantissa round-to-even */
1316 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1317
1318 /* handle overflow */
1319 if (ecb_expect_false (m >= 0x00800000))
1320 {
1321 m >>= 1;
1322 e += 1;
1323 }
1324
1325 return s | (e << 10) | (m >> (23 - 10));
1326 }
1327
1328 /* handle large numbers and infinity */
1329 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1330 return s | 0x7c00;
1331
1332 /* handle zero, subnormals and small numbers */
1333 if (ecb_expect_true (x < 0x38800000))
1334 {
1335 /* zero */
1336 if (ecb_expect_true (!x))
1337 return s;
1338
1339 /* handle subnormals */
1340
1341 /* too small, will be zero */
1342 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1343 return s;
1344
1345 m |= 0x00800000; /* make implicit bit explicit */
1346
1347 /* very tricky - we need to round to the nearest e (+10) bit value */
1348 {
1349 unsigned int bits = 14 - e;
1350 unsigned int half = (1 << (bits - 1)) - 1;
1351 unsigned int even = (m >> bits) & 1;
1352
1353 /* if this overflows, we will end up with a normalised number */
1354 m = (m + half + even) >> bits;
1355 }
1356
1357 return s | m;
1358 }
1359
1360 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1361 m >>= 13;
1362
1363 return s | 0x7c00 | m | !m;
1364}
1365
1366/*******************************************************************************/
1367/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1368
1369/* basically, everything uses "ieee pure-endian" floating point numbers */
1370/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1371#if 0 \
1372 || __i386 || __i386__ \
1373 || ECB_GCC_AMD64 \
1374 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1375 || defined __s390__ || defined __s390x__ \
1376 || defined __mips__ \
1377 || defined __alpha__ \
1378 || defined __hppa__ \
1379 || defined __ia64__ \
1380 || defined __m68k__ \
1381 || defined __m88k__ \
1382 || defined __sh__ \
1383 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1384 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1385 || defined __aarch64__
1386 #define ECB_STDFP 1
1387 #include <string.h> /* for memcpy */
1388#else
1389 #define ECB_STDFP 0
1390#endif
1391
1392#ifndef ECB_NO_LIBM
1393
1394 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1395
1396 /* only the oldest of old doesn't have this one. solaris. */
1397 #ifdef INFINITY
1398 #define ECB_INFINITY INFINITY
1399 #else
1400 #define ECB_INFINITY HUGE_VAL
1401 #endif
1402
1403 #ifdef NAN
1404 #define ECB_NAN NAN
1405 #else
1406 #define ECB_NAN ECB_INFINITY
1407 #endif
1408
1409 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1410 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1411 #define ecb_frexpf(x,e) frexpf ((x), (e))
1412 #else
1413 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1414 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1415 #endif
1416
1417 /* convert a float to ieee single/binary32 */
1418 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1419 ecb_function_ ecb_const uint32_t
1420 ecb_float_to_binary32 (float x)
1421 {
1422 uint32_t r;
1423
1424 #if ECB_STDFP
1425 memcpy (&r, &x, 4);
1426 #else
1427 /* slow emulation, works for anything but -0 */
1428 uint32_t m;
1429 int e;
1430
1431 if (x == 0e0f ) return 0x00000000U;
1432 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1433 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1434 if (x != x ) return 0x7fbfffffU;
1435
1436 m = ecb_frexpf (x, &e) * 0x1000000U;
1437
1438 r = m & 0x80000000U;
1439
1440 if (r)
1441 m = -m;
1442
1443 if (e <= -126)
1444 {
1445 m &= 0xffffffU;
1446 m >>= (-125 - e);
1447 e = -126;
1448 }
1449
1450 r |= (e + 126) << 23;
1451 r |= m & 0x7fffffU;
1452 #endif
1453
1454 return r;
1455 }
1456
1457 /* converts an ieee single/binary32 to a float */
1458 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1459 ecb_function_ ecb_const float
1460 ecb_binary32_to_float (uint32_t x)
1461 {
1462 float r;
1463
1464 #if ECB_STDFP
1465 memcpy (&r, &x, 4);
1466 #else
1467 /* emulation, only works for normals and subnormals and +0 */
1468 int neg = x >> 31;
1469 int e = (x >> 23) & 0xffU;
1470
1471 x &= 0x7fffffU;
1472
1473 if (e)
1474 x |= 0x800000U;
1475 else
1476 e = 1;
1477
1478 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1479 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1480
1481 r = neg ? -r : r;
1482 #endif
1483
1484 return r;
1485 }
1486
1487 /* convert a double to ieee double/binary64 */
1488 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1489 ecb_function_ ecb_const uint64_t
1490 ecb_double_to_binary64 (double x)
1491 {
1492 uint64_t r;
1493
1494 #if ECB_STDFP
1495 memcpy (&r, &x, 8);
1496 #else
1497 /* slow emulation, works for anything but -0 */
1498 uint64_t m;
1499 int e;
1500
1501 if (x == 0e0 ) return 0x0000000000000000U;
1502 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1503 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1504 if (x != x ) return 0X7ff7ffffffffffffU;
1505
1506 m = frexp (x, &e) * 0x20000000000000U;
1507
1508 r = m & 0x8000000000000000;;
1509
1510 if (r)
1511 m = -m;
1512
1513 if (e <= -1022)
1514 {
1515 m &= 0x1fffffffffffffU;
1516 m >>= (-1021 - e);
1517 e = -1022;
1518 }
1519
1520 r |= ((uint64_t)(e + 1022)) << 52;
1521 r |= m & 0xfffffffffffffU;
1522 #endif
1523
1524 return r;
1525 }
1526
1527 /* converts an ieee double/binary64 to a double */
1528 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1529 ecb_function_ ecb_const double
1530 ecb_binary64_to_double (uint64_t x)
1531 {
1532 double r;
1533
1534 #if ECB_STDFP
1535 memcpy (&r, &x, 8);
1536 #else
1537 /* emulation, only works for normals and subnormals and +0 */
1538 int neg = x >> 63;
1539 int e = (x >> 52) & 0x7ffU;
1540
1541 x &= 0xfffffffffffffU;
1542
1543 if (e)
1544 x |= 0x10000000000000U;
1545 else
1546 e = 1;
1547
1548 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1549 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1550
1551 r = neg ? -r : r;
1552 #endif
1553
1554 return r;
1555 }
1556
1557 /* convert a float to ieee half/binary16 */
1558 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1559 ecb_function_ ecb_const uint16_t
1560 ecb_float_to_binary16 (float x)
1561 {
1562 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1563 }
1564
1565 /* convert an ieee half/binary16 to float */
1566 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1567 ecb_function_ ecb_const float
1568 ecb_binary16_to_float (uint16_t x)
1569 {
1570 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1571 }
1572
1573#endif
1574
1575#endif
1576
1577/* ECB.H END */
1578
1579#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1580/* if your architecture doesn't need memory fences, e.g. because it is
1581 * single-cpu/core, or if you use libev in a project that doesn't use libev
1582 * from multiple threads, then you can define ECB_NO_THREADS when compiling
1583 * libev, in which cases the memory fences become nops.
1584 * alternatively, you can remove this #error and link against libpthread,
1585 * which will then provide the memory fences.
1586 */
1587# error "memory fences not defined for your architecture, please report"
1588#endif
1589
1590#ifndef ECB_MEMORY_FENCE
1591# define ECB_MEMORY_FENCE do { } while (0)
1592# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1593# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1594#endif
1595
1596#define inline_size ecb_inline
1597
1598#if EV_FEATURE_CODE
393# define inline_speed static inline 1599# define inline_speed ecb_inline
1600#else
1601# define inline_speed ecb_noinline static
394#endif 1602#endif
1603
1604/*****************************************************************************/
1605/* raw syscall wrappers */
1606
1607#if EV_NEED_SYSCALL
1608
1609#include <sys/syscall.h>
1610
1611/*
1612 * define some syscall wrappers for common architectures
1613 * this is mostly for nice looks during debugging, not performance.
1614 * our syscalls return < 0, not == -1, on error. which is good
1615 * enough for linux aio.
1616 * TODO: arm is also common nowadays, maybe even mips and x86
1617 * TODO: after implementing this, it suddenly looks like overkill, but its hard to remove...
1618 */
1619#if __GNUC__ && __linux && ECB_AMD64 && !defined __OPTIMIZE_SIZE__
1620 /* the costly errno access probably kills this for size optimisation */
1621
1622 #define ev_syscall(nr,narg,arg1,arg2,arg3,arg4,arg5,arg6) \
1623 ({ \
1624 long res; \
1625 register unsigned long r6 __asm__ ("r9" ); \
1626 register unsigned long r5 __asm__ ("r8" ); \
1627 register unsigned long r4 __asm__ ("r10"); \
1628 register unsigned long r3 __asm__ ("rdx"); \
1629 register unsigned long r2 __asm__ ("rsi"); \
1630 register unsigned long r1 __asm__ ("rdi"); \
1631 if (narg >= 6) r6 = (unsigned long)(arg6); \
1632 if (narg >= 5) r5 = (unsigned long)(arg5); \
1633 if (narg >= 4) r4 = (unsigned long)(arg4); \
1634 if (narg >= 3) r3 = (unsigned long)(arg3); \
1635 if (narg >= 2) r2 = (unsigned long)(arg2); \
1636 if (narg >= 1) r1 = (unsigned long)(arg1); \
1637 __asm__ __volatile__ ( \
1638 "syscall\n\t" \
1639 : "=a" (res) \
1640 : "0" (nr), "r" (r1), "r" (r2), "r" (r3), "r" (r4), "r" (r5) \
1641 : "cc", "r11", "cx", "memory"); \
1642 errno = -res; \
1643 res; \
1644 })
1645
1646#endif
1647
1648#ifdef ev_syscall
1649 #define ev_syscall0(nr) ev_syscall (nr, 0, 0, 0, 0, 0, 0, 0)
1650 #define ev_syscall1(nr,arg1) ev_syscall (nr, 1, arg1, 0, 0, 0, 0, 0)
1651 #define ev_syscall2(nr,arg1,arg2) ev_syscall (nr, 2, arg1, arg2, 0, 0, 0, 0)
1652 #define ev_syscall3(nr,arg1,arg2,arg3) ev_syscall (nr, 3, arg1, arg2, arg3, 0, 0, 0)
1653 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) ev_syscall (nr, 3, arg1, arg2, arg3, arg4, 0, 0)
1654 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) ev_syscall (nr, 5, arg1, arg2, arg3, arg4, arg5, 0)
1655 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) ev_syscall (nr, 6, arg1, arg2, arg3, arg4, arg5,arg6)
1656#else
1657 #define ev_syscall0(nr) syscall (nr)
1658 #define ev_syscall1(nr,arg1) syscall (nr, arg1)
1659 #define ev_syscall2(nr,arg1,arg2) syscall (nr, arg1, arg2)
1660 #define ev_syscall3(nr,arg1,arg2,arg3) syscall (nr, arg1, arg2, arg3)
1661 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) syscall (nr, arg1, arg2, arg3, arg4)
1662 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) syscall (nr, arg1, arg2, arg3, arg4, arg5)
1663 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) syscall (nr, arg1, arg2, arg3, arg4, arg5,arg6)
1664#endif
1665
1666#endif
1667
1668/*****************************************************************************/
395 1669
396#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1670#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
397 1671
398#if EV_MINPRI == EV_MAXPRI 1672#if EV_MINPRI == EV_MAXPRI
399# define ABSPRI(w) (((W)w), 0) 1673# define ABSPRI(w) (((W)w), 0)
400#else 1674#else
401# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1675# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
402#endif 1676#endif
403 1677
404#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1678#define EMPTY /* required for microsofts broken pseudo-c compiler */
405#define EMPTY2(a,b) /* used to suppress some warnings */
406 1679
407typedef ev_watcher *W; 1680typedef ev_watcher *W;
408typedef ev_watcher_list *WL; 1681typedef ev_watcher_list *WL;
409typedef ev_watcher_time *WT; 1682typedef ev_watcher_time *WT;
410 1683
411#define ev_active(w) ((W)(w))->active 1684#define ev_active(w) ((W)(w))->active
412#define ev_at(w) ((WT)(w))->at 1685#define ev_at(w) ((WT)(w))->at
413 1686
414#if EV_USE_REALTIME 1687#if EV_USE_REALTIME
415/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 1688/* sig_atomic_t is used to avoid per-thread variables or locking but still */
416/* giving it a reasonably high chance of working on typical architetcures */ 1689/* giving it a reasonably high chance of working on typical architectures */
417static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 1690static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
418#endif 1691#endif
419 1692
420#if EV_USE_MONOTONIC 1693#if EV_USE_MONOTONIC
421static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 1694static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
422#endif 1695#endif
423 1696
1697#ifndef EV_FD_TO_WIN32_HANDLE
1698# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
1699#endif
1700#ifndef EV_WIN32_HANDLE_TO_FD
1701# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
1702#endif
1703#ifndef EV_WIN32_CLOSE_FD
1704# define EV_WIN32_CLOSE_FD(fd) close (fd)
1705#endif
1706
424#ifdef _WIN32 1707#ifdef _WIN32
425# include "ev_win32.c" 1708# include "ev_win32.c"
426#endif 1709#endif
427 1710
428/*****************************************************************************/ 1711/*****************************************************************************/
429 1712
1713#if EV_USE_LINUXAIO
1714# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
1715#endif
1716
1717/* define a suitable floor function (only used by periodics atm) */
1718
1719#if EV_USE_FLOOR
1720# include <math.h>
1721# define ev_floor(v) floor (v)
1722#else
1723
1724#include <float.h>
1725
1726/* a floor() replacement function, should be independent of ev_tstamp type */
1727ecb_noinline
1728static ev_tstamp
1729ev_floor (ev_tstamp v)
1730{
1731 /* the choice of shift factor is not terribly important */
1732#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1733 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1734#else
1735 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1736#endif
1737
1738 /* special treatment for negative arguments */
1739 if (ecb_expect_false (v < 0.))
1740 {
1741 ev_tstamp f = -ev_floor (-v);
1742
1743 return f - (f == v ? 0 : 1);
1744 }
1745
1746 /* argument too large for an unsigned long? then reduce it */
1747 if (ecb_expect_false (v >= shift))
1748 {
1749 ev_tstamp f;
1750
1751 if (v == v - 1.)
1752 return v; /* very large numbers are assumed to be integer */
1753
1754 f = shift * ev_floor (v * (1. / shift));
1755 return f + ev_floor (v - f);
1756 }
1757
1758 /* fits into an unsigned long */
1759 return (unsigned long)v;
1760}
1761
1762#endif
1763
1764/*****************************************************************************/
1765
1766#ifdef __linux
1767# include <sys/utsname.h>
1768#endif
1769
1770ecb_noinline ecb_cold
1771static unsigned int
1772ev_linux_version (void)
1773{
1774#ifdef __linux
1775 unsigned int v = 0;
1776 struct utsname buf;
1777 int i;
1778 char *p = buf.release;
1779
1780 if (uname (&buf))
1781 return 0;
1782
1783 for (i = 3+1; --i; )
1784 {
1785 unsigned int c = 0;
1786
1787 for (;;)
1788 {
1789 if (*p >= '0' && *p <= '9')
1790 c = c * 10 + *p++ - '0';
1791 else
1792 {
1793 p += *p == '.';
1794 break;
1795 }
1796 }
1797
1798 v = (v << 8) | c;
1799 }
1800
1801 return v;
1802#else
1803 return 0;
1804#endif
1805}
1806
1807/*****************************************************************************/
1808
1809#if EV_AVOID_STDIO
1810ecb_noinline ecb_cold
1811static void
1812ev_printerr (const char *msg)
1813{
1814 write (STDERR_FILENO, msg, strlen (msg));
1815}
1816#endif
1817
430static void (*syserr_cb)(const char *msg); 1818static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
431 1819
1820ecb_cold
432void 1821void
433ev_set_syserr_cb (void (*cb)(const char *msg)) 1822ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
434{ 1823{
435 syserr_cb = cb; 1824 syserr_cb = cb;
436} 1825}
437 1826
438static void noinline 1827ecb_noinline ecb_cold
1828static void
439ev_syserr (const char *msg) 1829ev_syserr (const char *msg)
440{ 1830{
441 if (!msg) 1831 if (!msg)
442 msg = "(libev) system error"; 1832 msg = "(libev) system error";
443 1833
444 if (syserr_cb) 1834 if (syserr_cb)
445 syserr_cb (msg); 1835 syserr_cb (msg);
446 else 1836 else
447 { 1837 {
1838#if EV_AVOID_STDIO
1839 ev_printerr (msg);
1840 ev_printerr (": ");
1841 ev_printerr (strerror (errno));
1842 ev_printerr ("\n");
1843#else
448 perror (msg); 1844 perror (msg);
1845#endif
449 abort (); 1846 abort ();
450 } 1847 }
451} 1848}
452 1849
453static void * 1850static void *
454ev_realloc_emul (void *ptr, long size) 1851ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
455{ 1852{
456 /* some systems, notably openbsd and darwin, fail to properly 1853 /* some systems, notably openbsd and darwin, fail to properly
457 * implement realloc (x, 0) (as required by both ansi c-98 and 1854 * implement realloc (x, 0) (as required by both ansi c-89 and
458 * the single unix specification, so work around them here. 1855 * the single unix specification, so work around them here.
1856 * recently, also (at least) fedora and debian started breaking it,
1857 * despite documenting it otherwise.
459 */ 1858 */
460 1859
461 if (size) 1860 if (size)
462 return realloc (ptr, size); 1861 return realloc (ptr, size);
463 1862
464 free (ptr); 1863 free (ptr);
465 return 0; 1864 return 0;
466} 1865}
467 1866
468static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1867static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
469 1868
1869ecb_cold
470void 1870void
471ev_set_allocator (void *(*cb)(void *ptr, long size)) 1871ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
472{ 1872{
473 alloc = cb; 1873 alloc = cb;
474} 1874}
475 1875
476inline_speed void * 1876inline_speed void *
… …
478{ 1878{
479 ptr = alloc (ptr, size); 1879 ptr = alloc (ptr, size);
480 1880
481 if (!ptr && size) 1881 if (!ptr && size)
482 { 1882 {
1883#if EV_AVOID_STDIO
1884 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1885#else
483 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1886 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1887#endif
484 abort (); 1888 abort ();
485 } 1889 }
486 1890
487 return ptr; 1891 return ptr;
488} 1892}
… …
499typedef struct 1903typedef struct
500{ 1904{
501 WL head; 1905 WL head;
502 unsigned char events; /* the events watched for */ 1906 unsigned char events; /* the events watched for */
503 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */ 1907 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
504 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1908 unsigned char emask; /* some backends store the actual kernel mask in here */
505 unsigned char unused; 1909 unsigned char eflags; /* flags field for use by backends */
506#if EV_USE_EPOLL 1910#if EV_USE_EPOLL
507 unsigned int egen; /* generation counter to counter epoll bugs */ 1911 unsigned int egen; /* generation counter to counter epoll bugs */
508#endif 1912#endif
509#if EV_SELECT_IS_WINSOCKET 1913#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
510 SOCKET handle; 1914 SOCKET handle;
1915#endif
1916#if EV_USE_IOCP
1917 OVERLAPPED or, ow;
511#endif 1918#endif
512} ANFD; 1919} ANFD;
513 1920
514/* stores the pending event set for a given watcher */ 1921/* stores the pending event set for a given watcher */
515typedef struct 1922typedef struct
… …
557 #undef VAR 1964 #undef VAR
558 }; 1965 };
559 #include "ev_wrap.h" 1966 #include "ev_wrap.h"
560 1967
561 static struct ev_loop default_loop_struct; 1968 static struct ev_loop default_loop_struct;
562 struct ev_loop *ev_default_loop_ptr; 1969 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
563 1970
564#else 1971#else
565 1972
566 ev_tstamp ev_rt_now; 1973 EV_API_DECL ev_tstamp ev_rt_now = EV_TS_CONST (0.); /* needs to be initialised to make it a definition despite extern */
567 #define VAR(name,decl) static decl; 1974 #define VAR(name,decl) static decl;
568 #include "ev_vars.h" 1975 #include "ev_vars.h"
569 #undef VAR 1976 #undef VAR
570 1977
571 static int ev_default_loop_ptr; 1978 static int ev_default_loop_ptr;
572 1979
573#endif 1980#endif
574 1981
575#if EV_MINIMAL < 2 1982#if EV_FEATURE_API
576# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 1983# define EV_RELEASE_CB if (ecb_expect_false (release_cb)) release_cb (EV_A)
577# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 1984# define EV_ACQUIRE_CB if (ecb_expect_false (acquire_cb)) acquire_cb (EV_A)
578# define EV_INVOKE_PENDING invoke_cb (EV_A) 1985# define EV_INVOKE_PENDING invoke_cb (EV_A)
579#else 1986#else
580# define EV_RELEASE_CB (void)0 1987# define EV_RELEASE_CB (void)0
581# define EV_ACQUIRE_CB (void)0 1988# define EV_ACQUIRE_CB (void)0
582# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1989# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
583#endif 1990#endif
584 1991
585#define EVUNLOOP_RECURSE 0x80 1992#define EVBREAK_RECURSE 0x80
586 1993
587/*****************************************************************************/ 1994/*****************************************************************************/
588 1995
589#ifndef EV_HAVE_EV_TIME 1996#ifndef EV_HAVE_EV_TIME
590ev_tstamp 1997ev_tstamp
591ev_time (void) 1998ev_time (void) EV_NOEXCEPT
592{ 1999{
593#if EV_USE_REALTIME 2000#if EV_USE_REALTIME
594 if (expect_true (have_realtime)) 2001 if (ecb_expect_true (have_realtime))
595 { 2002 {
596 struct timespec ts; 2003 struct timespec ts;
597 clock_gettime (CLOCK_REALTIME, &ts); 2004 clock_gettime (CLOCK_REALTIME, &ts);
598 return ts.tv_sec + ts.tv_nsec * 1e-9; 2005 return EV_TS_GET (ts);
599 } 2006 }
600#endif 2007#endif
601 2008
602 struct timeval tv; 2009 struct timeval tv;
603 gettimeofday (&tv, 0); 2010 gettimeofday (&tv, 0);
604 return tv.tv_sec + tv.tv_usec * 1e-6; 2011 return EV_TV_GET (tv);
605} 2012}
606#endif 2013#endif
607 2014
608inline_size ev_tstamp 2015inline_size ev_tstamp
609get_clock (void) 2016get_clock (void)
610{ 2017{
611#if EV_USE_MONOTONIC 2018#if EV_USE_MONOTONIC
612 if (expect_true (have_monotonic)) 2019 if (ecb_expect_true (have_monotonic))
613 { 2020 {
614 struct timespec ts; 2021 struct timespec ts;
615 clock_gettime (CLOCK_MONOTONIC, &ts); 2022 clock_gettime (CLOCK_MONOTONIC, &ts);
616 return ts.tv_sec + ts.tv_nsec * 1e-9; 2023 return EV_TS_GET (ts);
617 } 2024 }
618#endif 2025#endif
619 2026
620 return ev_time (); 2027 return ev_time ();
621} 2028}
622 2029
623#if EV_MULTIPLICITY 2030#if EV_MULTIPLICITY
624ev_tstamp 2031ev_tstamp
625ev_now (EV_P) 2032ev_now (EV_P) EV_NOEXCEPT
626{ 2033{
627 return ev_rt_now; 2034 return ev_rt_now;
628} 2035}
629#endif 2036#endif
630 2037
631void 2038void
632ev_sleep (ev_tstamp delay) 2039ev_sleep (ev_tstamp delay) EV_NOEXCEPT
633{ 2040{
634 if (delay > 0.) 2041 if (delay > EV_TS_CONST (0.))
635 { 2042 {
636#if EV_USE_NANOSLEEP 2043#if EV_USE_NANOSLEEP
637 struct timespec ts; 2044 struct timespec ts;
638 2045
639 ts.tv_sec = (time_t)delay; 2046 EV_TS_SET (ts, delay);
640 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
641
642 nanosleep (&ts, 0); 2047 nanosleep (&ts, 0);
643#elif defined(_WIN32) 2048#elif defined _WIN32
2049 /* maybe this should round up, as ms is very low resolution */
2050 /* compared to select (µs) or nanosleep (ns) */
644 Sleep ((unsigned long)(delay * 1e3)); 2051 Sleep ((unsigned long)(EV_TS_TO_MSEC (delay)));
645#else 2052#else
646 struct timeval tv; 2053 struct timeval tv;
647
648 tv.tv_sec = (time_t)delay;
649 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
650 2054
651 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 2055 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
652 /* something not guaranteed by newer posix versions, but guaranteed */ 2056 /* something not guaranteed by newer posix versions, but guaranteed */
653 /* by older ones */ 2057 /* by older ones */
2058 EV_TV_SET (tv, delay);
654 select (0, 0, 0, 0, &tv); 2059 select (0, 0, 0, 0, &tv);
655#endif 2060#endif
656 } 2061 }
657} 2062}
658 2063
659/*****************************************************************************/ 2064/*****************************************************************************/
660 2065
661#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 2066#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
662 2067
663/* find a suitable new size for the given array, */ 2068/* find a suitable new size for the given array, */
664/* hopefully by rounding to a ncie-to-malloc size */ 2069/* hopefully by rounding to a nice-to-malloc size */
665inline_size int 2070inline_size int
666array_nextsize (int elem, int cur, int cnt) 2071array_nextsize (int elem, int cur, int cnt)
667{ 2072{
668 int ncur = cur + 1; 2073 int ncur = cur + 1;
669 2074
670 do 2075 do
671 ncur <<= 1; 2076 ncur <<= 1;
672 while (cnt > ncur); 2077 while (cnt > ncur);
673 2078
674 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 2079 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
675 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 2080 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
676 { 2081 {
677 ncur *= elem; 2082 ncur *= elem;
678 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 2083 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
679 ncur = ncur - sizeof (void *) * 4; 2084 ncur = ncur - sizeof (void *) * 4;
… …
681 } 2086 }
682 2087
683 return ncur; 2088 return ncur;
684} 2089}
685 2090
686static noinline void * 2091ecb_noinline ecb_cold
2092static void *
687array_realloc (int elem, void *base, int *cur, int cnt) 2093array_realloc (int elem, void *base, int *cur, int cnt)
688{ 2094{
689 *cur = array_nextsize (elem, *cur, cnt); 2095 *cur = array_nextsize (elem, *cur, cnt);
690 return ev_realloc (base, elem * *cur); 2096 return ev_realloc (base, elem * *cur);
691} 2097}
692 2098
2099#define array_needsize_noinit(base,offset,count)
2100
693#define array_init_zero(base,count) \ 2101#define array_needsize_zerofill(base,offset,count) \
694 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 2102 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
695 2103
696#define array_needsize(type,base,cur,cnt,init) \ 2104#define array_needsize(type,base,cur,cnt,init) \
697 if (expect_false ((cnt) > (cur))) \ 2105 if (ecb_expect_false ((cnt) > (cur))) \
698 { \ 2106 { \
699 int ocur_ = (cur); \ 2107 ecb_unused int ocur_ = (cur); \
700 (base) = (type *)array_realloc \ 2108 (base) = (type *)array_realloc \
701 (sizeof (type), (base), &(cur), (cnt)); \ 2109 (sizeof (type), (base), &(cur), (cnt)); \
702 init ((base) + (ocur_), (cur) - ocur_); \ 2110 init ((base), ocur_, ((cur) - ocur_)); \
703 } 2111 }
704 2112
705#if 0 2113#if 0
706#define array_slim(type,stem) \ 2114#define array_slim(type,stem) \
707 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2115 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
… …
716 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 2124 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
717 2125
718/*****************************************************************************/ 2126/*****************************************************************************/
719 2127
720/* dummy callback for pending events */ 2128/* dummy callback for pending events */
721static void noinline 2129ecb_noinline
2130static void
722pendingcb (EV_P_ ev_prepare *w, int revents) 2131pendingcb (EV_P_ ev_prepare *w, int revents)
723{ 2132{
724} 2133}
725 2134
726void noinline 2135ecb_noinline
2136void
727ev_feed_event (EV_P_ void *w, int revents) 2137ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
728{ 2138{
729 W w_ = (W)w; 2139 W w_ = (W)w;
730 int pri = ABSPRI (w_); 2140 int pri = ABSPRI (w_);
731 2141
732 if (expect_false (w_->pending)) 2142 if (ecb_expect_false (w_->pending))
733 pendings [pri][w_->pending - 1].events |= revents; 2143 pendings [pri][w_->pending - 1].events |= revents;
734 else 2144 else
735 { 2145 {
736 w_->pending = ++pendingcnt [pri]; 2146 w_->pending = ++pendingcnt [pri];
737 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2147 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
738 pendings [pri][w_->pending - 1].w = w_; 2148 pendings [pri][w_->pending - 1].w = w_;
739 pendings [pri][w_->pending - 1].events = revents; 2149 pendings [pri][w_->pending - 1].events = revents;
740 } 2150 }
2151
2152 pendingpri = NUMPRI - 1;
741} 2153}
742 2154
743inline_speed void 2155inline_speed void
744feed_reverse (EV_P_ W w) 2156feed_reverse (EV_P_ W w)
745{ 2157{
746 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2158 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
747 rfeeds [rfeedcnt++] = w; 2159 rfeeds [rfeedcnt++] = w;
748} 2160}
749 2161
750inline_size void 2162inline_size void
751feed_reverse_done (EV_P_ int revents) 2163feed_reverse_done (EV_P_ int revents)
… …
765} 2177}
766 2178
767/*****************************************************************************/ 2179/*****************************************************************************/
768 2180
769inline_speed void 2181inline_speed void
770fd_event_nc (EV_P_ int fd, int revents) 2182fd_event_nocheck (EV_P_ int fd, int revents)
771{ 2183{
772 ANFD *anfd = anfds + fd; 2184 ANFD *anfd = anfds + fd;
773 ev_io *w; 2185 ev_io *w;
774 2186
775 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2187 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
786inline_speed void 2198inline_speed void
787fd_event (EV_P_ int fd, int revents) 2199fd_event (EV_P_ int fd, int revents)
788{ 2200{
789 ANFD *anfd = anfds + fd; 2201 ANFD *anfd = anfds + fd;
790 2202
791 if (expect_true (!anfd->reify)) 2203 if (ecb_expect_true (!anfd->reify))
792 fd_event_nc (EV_A_ fd, revents); 2204 fd_event_nocheck (EV_A_ fd, revents);
793} 2205}
794 2206
795void 2207void
796ev_feed_fd_event (EV_P_ int fd, int revents) 2208ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
797{ 2209{
798 if (fd >= 0 && fd < anfdmax) 2210 if (fd >= 0 && fd < anfdmax)
799 fd_event_nc (EV_A_ fd, revents); 2211 fd_event_nocheck (EV_A_ fd, revents);
800} 2212}
801 2213
802/* make sure the external fd watch events are in-sync */ 2214/* make sure the external fd watch events are in-sync */
803/* with the kernel/libev internal state */ 2215/* with the kernel/libev internal state */
804inline_size void 2216inline_size void
805fd_reify (EV_P) 2217fd_reify (EV_P)
806{ 2218{
807 int i; 2219 int i;
808 2220
2221#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
2222 for (i = 0; i < fdchangecnt; ++i)
2223 {
2224 int fd = fdchanges [i];
2225 ANFD *anfd = anfds + fd;
2226
2227 if (anfd->reify & EV__IOFDSET && anfd->head)
2228 {
2229 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
2230
2231 if (handle != anfd->handle)
2232 {
2233 unsigned long arg;
2234
2235 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
2236
2237 /* handle changed, but fd didn't - we need to do it in two steps */
2238 backend_modify (EV_A_ fd, anfd->events, 0);
2239 anfd->events = 0;
2240 anfd->handle = handle;
2241 }
2242 }
2243 }
2244#endif
2245
809 for (i = 0; i < fdchangecnt; ++i) 2246 for (i = 0; i < fdchangecnt; ++i)
810 { 2247 {
811 int fd = fdchanges [i]; 2248 int fd = fdchanges [i];
812 ANFD *anfd = anfds + fd; 2249 ANFD *anfd = anfds + fd;
813 ev_io *w; 2250 ev_io *w;
814 2251
815 unsigned char events = 0; 2252 unsigned char o_events = anfd->events;
2253 unsigned char o_reify = anfd->reify;
816 2254
817 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2255 anfd->reify = 0;
818 events |= (unsigned char)w->events;
819 2256
820#if EV_SELECT_IS_WINSOCKET 2257 /*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
821 if (events)
822 { 2258 {
823 unsigned long arg; 2259 anfd->events = 0;
824 #ifdef EV_FD_TO_WIN32_HANDLE 2260
825 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 2261 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
826 #else 2262 anfd->events |= (unsigned char)w->events;
827 anfd->handle = _get_osfhandle (fd); 2263
828 #endif 2264 if (o_events != anfd->events)
829 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 2265 o_reify = EV__IOFDSET; /* actually |= */
830 } 2266 }
831#endif
832 2267
833 { 2268 if (o_reify & EV__IOFDSET)
834 unsigned char o_events = anfd->events;
835 unsigned char o_reify = anfd->reify;
836
837 anfd->reify = 0;
838 anfd->events = events;
839
840 if (o_events != events || o_reify & EV__IOFDSET)
841 backend_modify (EV_A_ fd, o_events, events); 2269 backend_modify (EV_A_ fd, o_events, anfd->events);
842 }
843 } 2270 }
844 2271
845 fdchangecnt = 0; 2272 fdchangecnt = 0;
846} 2273}
847 2274
848/* something about the given fd changed */ 2275/* something about the given fd changed */
849inline_size void 2276inline_size
2277void
850fd_change (EV_P_ int fd, int flags) 2278fd_change (EV_P_ int fd, int flags)
851{ 2279{
852 unsigned char reify = anfds [fd].reify; 2280 unsigned char reify = anfds [fd].reify;
853 anfds [fd].reify |= flags; 2281 anfds [fd].reify |= flags;
854 2282
855 if (expect_true (!reify)) 2283 if (ecb_expect_true (!reify))
856 { 2284 {
857 ++fdchangecnt; 2285 ++fdchangecnt;
858 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2286 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
859 fdchanges [fdchangecnt - 1] = fd; 2287 fdchanges [fdchangecnt - 1] = fd;
860 } 2288 }
861} 2289}
862 2290
863/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2291/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
864inline_speed void 2292inline_speed ecb_cold void
865fd_kill (EV_P_ int fd) 2293fd_kill (EV_P_ int fd)
866{ 2294{
867 ev_io *w; 2295 ev_io *w;
868 2296
869 while ((w = (ev_io *)anfds [fd].head)) 2297 while ((w = (ev_io *)anfds [fd].head))
… …
871 ev_io_stop (EV_A_ w); 2299 ev_io_stop (EV_A_ w);
872 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2300 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
873 } 2301 }
874} 2302}
875 2303
876/* check whether the given fd is atcually valid, for error recovery */ 2304/* check whether the given fd is actually valid, for error recovery */
877inline_size int 2305inline_size ecb_cold int
878fd_valid (int fd) 2306fd_valid (int fd)
879{ 2307{
880#ifdef _WIN32 2308#ifdef _WIN32
881 return _get_osfhandle (fd) != -1; 2309 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
882#else 2310#else
883 return fcntl (fd, F_GETFD) != -1; 2311 return fcntl (fd, F_GETFD) != -1;
884#endif 2312#endif
885} 2313}
886 2314
887/* called on EBADF to verify fds */ 2315/* called on EBADF to verify fds */
888static void noinline 2316ecb_noinline ecb_cold
2317static void
889fd_ebadf (EV_P) 2318fd_ebadf (EV_P)
890{ 2319{
891 int fd; 2320 int fd;
892 2321
893 for (fd = 0; fd < anfdmax; ++fd) 2322 for (fd = 0; fd < anfdmax; ++fd)
… …
895 if (!fd_valid (fd) && errno == EBADF) 2324 if (!fd_valid (fd) && errno == EBADF)
896 fd_kill (EV_A_ fd); 2325 fd_kill (EV_A_ fd);
897} 2326}
898 2327
899/* called on ENOMEM in select/poll to kill some fds and retry */ 2328/* called on ENOMEM in select/poll to kill some fds and retry */
900static void noinline 2329ecb_noinline ecb_cold
2330static void
901fd_enomem (EV_P) 2331fd_enomem (EV_P)
902{ 2332{
903 int fd; 2333 int fd;
904 2334
905 for (fd = anfdmax; fd--; ) 2335 for (fd = anfdmax; fd--; )
906 if (anfds [fd].events) 2336 if (anfds [fd].events)
907 { 2337 {
908 fd_kill (EV_A_ fd); 2338 fd_kill (EV_A_ fd);
909 return; 2339 break;
910 } 2340 }
911} 2341}
912 2342
913/* usually called after fork if backend needs to re-arm all fds from scratch */ 2343/* usually called after fork if backend needs to re-arm all fds from scratch */
914static void noinline 2344ecb_noinline
2345static void
915fd_rearm_all (EV_P) 2346fd_rearm_all (EV_P)
916{ 2347{
917 int fd; 2348 int fd;
918 2349
919 for (fd = 0; fd < anfdmax; ++fd) 2350 for (fd = 0; fd < anfdmax; ++fd)
… …
923 anfds [fd].emask = 0; 2354 anfds [fd].emask = 0;
924 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); 2355 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
925 } 2356 }
926} 2357}
927 2358
2359/* used to prepare libev internal fd's */
2360/* this is not fork-safe */
2361inline_speed void
2362fd_intern (int fd)
2363{
2364#ifdef _WIN32
2365 unsigned long arg = 1;
2366 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
2367#else
2368 fcntl (fd, F_SETFD, FD_CLOEXEC);
2369 fcntl (fd, F_SETFL, O_NONBLOCK);
2370#endif
2371}
2372
928/*****************************************************************************/ 2373/*****************************************************************************/
929 2374
930/* 2375/*
931 * the heap functions want a real array index. array index 0 uis guaranteed to not 2376 * the heap functions want a real array index. array index 0 is guaranteed to not
932 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 2377 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
933 * the branching factor of the d-tree. 2378 * the branching factor of the d-tree.
934 */ 2379 */
935 2380
936/* 2381/*
… …
958 ev_tstamp minat; 2403 ev_tstamp minat;
959 ANHE *minpos; 2404 ANHE *minpos;
960 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; 2405 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
961 2406
962 /* find minimum child */ 2407 /* find minimum child */
963 if (expect_true (pos + DHEAP - 1 < E)) 2408 if (ecb_expect_true (pos + DHEAP - 1 < E))
964 { 2409 {
965 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2410 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
966 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2411 if ( minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
967 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2412 if ( minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
968 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2413 if ( minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
969 } 2414 }
970 else if (pos < E) 2415 else if (pos < E)
971 { 2416 {
972 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2417 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
973 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2418 if (pos + 1 < E && minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
974 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2419 if (pos + 2 < E && minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
975 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2420 if (pos + 3 < E && minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
976 } 2421 }
977 else 2422 else
978 break; 2423 break;
979 2424
980 if (ANHE_at (he) <= minat) 2425 if (ANHE_at (he) <= minat)
… …
988 2433
989 heap [k] = he; 2434 heap [k] = he;
990 ev_active (ANHE_w (he)) = k; 2435 ev_active (ANHE_w (he)) = k;
991} 2436}
992 2437
993#else /* 4HEAP */ 2438#else /* not 4HEAP */
994 2439
995#define HEAP0 1 2440#define HEAP0 1
996#define HPARENT(k) ((k) >> 1) 2441#define HPARENT(k) ((k) >> 1)
997#define UPHEAP_DONE(p,k) (!(p)) 2442#define UPHEAP_DONE(p,k) (!(p))
998 2443
… …
1004 2449
1005 for (;;) 2450 for (;;)
1006 { 2451 {
1007 int c = k << 1; 2452 int c = k << 1;
1008 2453
1009 if (c > N + HEAP0 - 1) 2454 if (c >= N + HEAP0)
1010 break; 2455 break;
1011 2456
1012 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 2457 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
1013 ? 1 : 0; 2458 ? 1 : 0;
1014 2459
… …
1050 2495
1051/* move an element suitably so it is in a correct place */ 2496/* move an element suitably so it is in a correct place */
1052inline_size void 2497inline_size void
1053adjustheap (ANHE *heap, int N, int k) 2498adjustheap (ANHE *heap, int N, int k)
1054{ 2499{
1055 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 2500 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1056 upheap (heap, k); 2501 upheap (heap, k);
1057 else 2502 else
1058 downheap (heap, N, k); 2503 downheap (heap, N, k);
1059} 2504}
1060 2505
… …
1073/*****************************************************************************/ 2518/*****************************************************************************/
1074 2519
1075/* associate signal watchers to a signal signal */ 2520/* associate signal watchers to a signal signal */
1076typedef struct 2521typedef struct
1077{ 2522{
2523 EV_ATOMIC_T pending;
2524#if EV_MULTIPLICITY
2525 EV_P;
2526#endif
1078 WL head; 2527 WL head;
1079 EV_ATOMIC_T gotsig;
1080} ANSIG; 2528} ANSIG;
1081 2529
1082static ANSIG *signals; 2530static ANSIG signals [EV_NSIG - 1];
1083static int signalmax;
1084
1085static EV_ATOMIC_T gotsig;
1086 2531
1087/*****************************************************************************/ 2532/*****************************************************************************/
1088 2533
1089/* used to prepare libev internal fd's */ 2534#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1090/* this is not fork-safe */ 2535
2536ecb_noinline ecb_cold
2537static void
2538evpipe_init (EV_P)
2539{
2540 if (!ev_is_active (&pipe_w))
2541 {
2542 int fds [2];
2543
2544# if EV_USE_EVENTFD
2545 fds [0] = -1;
2546 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
2547 if (fds [1] < 0 && errno == EINVAL)
2548 fds [1] = eventfd (0, 0);
2549
2550 if (fds [1] < 0)
2551# endif
2552 {
2553 while (pipe (fds))
2554 ev_syserr ("(libev) error creating signal/async pipe");
2555
2556 fd_intern (fds [0]);
2557 }
2558
2559 evpipe [0] = fds [0];
2560
2561 if (evpipe [1] < 0)
2562 evpipe [1] = fds [1]; /* first call, set write fd */
2563 else
2564 {
2565 /* on subsequent calls, do not change evpipe [1] */
2566 /* so that evpipe_write can always rely on its value. */
2567 /* this branch does not do anything sensible on windows, */
2568 /* so must not be executed on windows */
2569
2570 dup2 (fds [1], evpipe [1]);
2571 close (fds [1]);
2572 }
2573
2574 fd_intern (evpipe [1]);
2575
2576 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2577 ev_io_start (EV_A_ &pipe_w);
2578 ev_unref (EV_A); /* watcher should not keep loop alive */
2579 }
2580}
2581
1091inline_speed void 2582inline_speed void
1092fd_intern (int fd) 2583evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1093{ 2584{
1094#ifdef _WIN32 2585 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1095 unsigned long arg = 1;
1096 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1097#else
1098 fcntl (fd, F_SETFD, FD_CLOEXEC);
1099 fcntl (fd, F_SETFL, O_NONBLOCK);
1100#endif
1101}
1102 2586
1103static void noinline 2587 if (ecb_expect_true (*flag))
1104evpipe_init (EV_P) 2588 return;
1105{ 2589
1106 if (!ev_is_active (&pipe_w)) 2590 *flag = 1;
2591 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2592
2593 pipe_write_skipped = 1;
2594
2595 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2596
2597 if (pipe_write_wanted)
1107 { 2598 {
2599 int old_errno;
2600
2601 pipe_write_skipped = 0;
2602 ECB_MEMORY_FENCE_RELEASE;
2603
2604 old_errno = errno; /* save errno because write will clobber it */
2605
1108#if EV_USE_EVENTFD 2606#if EV_USE_EVENTFD
1109 if ((evfd = eventfd (0, 0)) >= 0) 2607 if (evpipe [0] < 0)
1110 { 2608 {
1111 evpipe [0] = -1; 2609 uint64_t counter = 1;
1112 fd_intern (evfd); 2610 write (evpipe [1], &counter, sizeof (uint64_t));
1113 ev_io_set (&pipe_w, evfd, EV_READ);
1114 } 2611 }
1115 else 2612 else
1116#endif 2613#endif
1117 { 2614 {
1118 while (pipe (evpipe)) 2615#ifdef _WIN32
1119 ev_syserr ("(libev) error creating signal/async pipe"); 2616 WSABUF buf;
1120 2617 DWORD sent;
1121 fd_intern (evpipe [0]); 2618 buf.buf = (char *)&buf;
1122 fd_intern (evpipe [1]); 2619 buf.len = 1;
1123 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2620 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2621#else
2622 write (evpipe [1], &(evpipe [1]), 1);
2623#endif
1124 } 2624 }
1125
1126 ev_io_start (EV_A_ &pipe_w);
1127 ev_unref (EV_A); /* watcher should not keep loop alive */
1128 }
1129}
1130
1131inline_size void
1132evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1133{
1134 if (!*flag)
1135 {
1136 int old_errno = errno; /* save errno because write might clobber it */
1137
1138 *flag = 1;
1139
1140#if EV_USE_EVENTFD
1141 if (evfd >= 0)
1142 {
1143 uint64_t counter = 1;
1144 write (evfd, &counter, sizeof (uint64_t));
1145 }
1146 else
1147#endif
1148 write (evpipe [1], &old_errno, 1);
1149 2625
1150 errno = old_errno; 2626 errno = old_errno;
1151 } 2627 }
1152} 2628}
1153 2629
1154/* called whenever the libev signal pipe */ 2630/* called whenever the libev signal pipe */
1155/* got some events (signal, async) */ 2631/* got some events (signal, async) */
1156static void 2632static void
1157pipecb (EV_P_ ev_io *iow, int revents) 2633pipecb (EV_P_ ev_io *iow, int revents)
1158{ 2634{
2635 int i;
2636
2637 if (revents & EV_READ)
2638 {
1159#if EV_USE_EVENTFD 2639#if EV_USE_EVENTFD
1160 if (evfd >= 0) 2640 if (evpipe [0] < 0)
1161 { 2641 {
1162 uint64_t counter; 2642 uint64_t counter;
1163 read (evfd, &counter, sizeof (uint64_t)); 2643 read (evpipe [1], &counter, sizeof (uint64_t));
1164 } 2644 }
1165 else 2645 else
1166#endif 2646#endif
1167 { 2647 {
1168 char dummy; 2648 char dummy[4];
2649#ifdef _WIN32
2650 WSABUF buf;
2651 DWORD recvd;
2652 DWORD flags = 0;
2653 buf.buf = dummy;
2654 buf.len = sizeof (dummy);
2655 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2656#else
1169 read (evpipe [0], &dummy, 1); 2657 read (evpipe [0], &dummy, sizeof (dummy));
2658#endif
2659 }
2660 }
2661
2662 pipe_write_skipped = 0;
2663
2664 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2665
2666#if EV_SIGNAL_ENABLE
2667 if (sig_pending)
1170 } 2668 {
2669 sig_pending = 0;
1171 2670
1172 if (gotsig && ev_is_default_loop (EV_A)) 2671 ECB_MEMORY_FENCE;
1173 {
1174 int signum;
1175 gotsig = 0;
1176 2672
1177 for (signum = signalmax; signum--; ) 2673 for (i = EV_NSIG - 1; i--; )
1178 if (signals [signum].gotsig) 2674 if (ecb_expect_false (signals [i].pending))
1179 ev_feed_signal_event (EV_A_ signum + 1); 2675 ev_feed_signal_event (EV_A_ i + 1);
1180 } 2676 }
2677#endif
1181 2678
1182#if EV_ASYNC_ENABLE 2679#if EV_ASYNC_ENABLE
1183 if (gotasync) 2680 if (async_pending)
1184 { 2681 {
1185 int i; 2682 async_pending = 0;
1186 gotasync = 0; 2683
2684 ECB_MEMORY_FENCE;
1187 2685
1188 for (i = asynccnt; i--; ) 2686 for (i = asynccnt; i--; )
1189 if (asyncs [i]->sent) 2687 if (asyncs [i]->sent)
1190 { 2688 {
1191 asyncs [i]->sent = 0; 2689 asyncs [i]->sent = 0;
2690 ECB_MEMORY_FENCE_RELEASE;
1192 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2691 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1193 } 2692 }
1194 } 2693 }
1195#endif 2694#endif
1196} 2695}
1197 2696
1198/*****************************************************************************/ 2697/*****************************************************************************/
1199 2698
2699void
2700ev_feed_signal (int signum) EV_NOEXCEPT
2701{
2702#if EV_MULTIPLICITY
2703 EV_P;
2704 ECB_MEMORY_FENCE_ACQUIRE;
2705 EV_A = signals [signum - 1].loop;
2706
2707 if (!EV_A)
2708 return;
2709#endif
2710
2711 signals [signum - 1].pending = 1;
2712 evpipe_write (EV_A_ &sig_pending);
2713}
2714
1200static void 2715static void
1201ev_sighandler (int signum) 2716ev_sighandler (int signum)
1202{ 2717{
2718#ifdef _WIN32
2719 signal (signum, ev_sighandler);
2720#endif
2721
2722 ev_feed_signal (signum);
2723}
2724
2725ecb_noinline
2726void
2727ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
2728{
2729 WL w;
2730
2731 if (ecb_expect_false (signum <= 0 || signum >= EV_NSIG))
2732 return;
2733
2734 --signum;
2735
1203#if EV_MULTIPLICITY 2736#if EV_MULTIPLICITY
1204 struct ev_loop *loop = &default_loop_struct; 2737 /* it is permissible to try to feed a signal to the wrong loop */
1205#endif 2738 /* or, likely more useful, feeding a signal nobody is waiting for */
1206 2739
1207#if _WIN32 2740 if (ecb_expect_false (signals [signum].loop != EV_A))
1208 signal (signum, ev_sighandler);
1209#endif
1210
1211 signals [signum - 1].gotsig = 1;
1212 evpipe_write (EV_A_ &gotsig);
1213}
1214
1215void noinline
1216ev_feed_signal_event (EV_P_ int signum)
1217{
1218 WL w;
1219
1220#if EV_MULTIPLICITY
1221 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1222#endif
1223
1224 --signum;
1225
1226 if (signum < 0 || signum >= signalmax)
1227 return; 2741 return;
2742#endif
1228 2743
1229 signals [signum].gotsig = 0; 2744 signals [signum].pending = 0;
2745 ECB_MEMORY_FENCE_RELEASE;
1230 2746
1231 for (w = signals [signum].head; w; w = w->next) 2747 for (w = signals [signum].head; w; w = w->next)
1232 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2748 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1233} 2749}
1234 2750
2751#if EV_USE_SIGNALFD
2752static void
2753sigfdcb (EV_P_ ev_io *iow, int revents)
2754{
2755 struct signalfd_siginfo si[2], *sip; /* these structs are big */
2756
2757 for (;;)
2758 {
2759 ssize_t res = read (sigfd, si, sizeof (si));
2760
2761 /* not ISO-C, as res might be -1, but works with SuS */
2762 for (sip = si; (char *)sip < (char *)si + res; ++sip)
2763 ev_feed_signal_event (EV_A_ sip->ssi_signo);
2764
2765 if (res < (ssize_t)sizeof (si))
2766 break;
2767 }
2768}
2769#endif
2770
2771#endif
2772
1235/*****************************************************************************/ 2773/*****************************************************************************/
1236 2774
2775#if EV_CHILD_ENABLE
1237static WL childs [EV_PID_HASHSIZE]; 2776static WL childs [EV_PID_HASHSIZE];
1238
1239#ifndef _WIN32
1240 2777
1241static ev_signal childev; 2778static ev_signal childev;
1242 2779
1243#ifndef WIFCONTINUED 2780#ifndef WIFCONTINUED
1244# define WIFCONTINUED(status) 0 2781# define WIFCONTINUED(status) 0
… …
1249child_reap (EV_P_ int chain, int pid, int status) 2786child_reap (EV_P_ int chain, int pid, int status)
1250{ 2787{
1251 ev_child *w; 2788 ev_child *w;
1252 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2789 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1253 2790
1254 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2791 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1255 { 2792 {
1256 if ((w->pid == pid || !w->pid) 2793 if ((w->pid == pid || !w->pid)
1257 && (!traced || (w->flags & 1))) 2794 && (!traced || (w->flags & 1)))
1258 { 2795 {
1259 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2796 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1284 /* make sure we are called again until all children have been reaped */ 2821 /* make sure we are called again until all children have been reaped */
1285 /* we need to do it this way so that the callback gets called before we continue */ 2822 /* we need to do it this way so that the callback gets called before we continue */
1286 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2823 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1287 2824
1288 child_reap (EV_A_ pid, pid, status); 2825 child_reap (EV_A_ pid, pid, status);
1289 if (EV_PID_HASHSIZE > 1) 2826 if ((EV_PID_HASHSIZE) > 1)
1290 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2827 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1291} 2828}
1292 2829
1293#endif 2830#endif
1294 2831
1295/*****************************************************************************/ 2832/*****************************************************************************/
1296 2833
2834#if EV_USE_IOCP
2835# include "ev_iocp.c"
2836#endif
1297#if EV_USE_PORT 2837#if EV_USE_PORT
1298# include "ev_port.c" 2838# include "ev_port.c"
1299#endif 2839#endif
1300#if EV_USE_KQUEUE 2840#if EV_USE_KQUEUE
1301# include "ev_kqueue.c" 2841# include "ev_kqueue.c"
1302#endif 2842#endif
1303#if EV_USE_EPOLL 2843#if EV_USE_EPOLL
1304# include "ev_epoll.c" 2844# include "ev_epoll.c"
1305#endif 2845#endif
2846#if EV_USE_LINUXAIO
2847# include "ev_linuxaio.c"
2848#endif
2849#if EV_USE_IOURING
2850# include "ev_iouring.c"
2851#endif
1306#if EV_USE_POLL 2852#if EV_USE_POLL
1307# include "ev_poll.c" 2853# include "ev_poll.c"
1308#endif 2854#endif
1309#if EV_USE_SELECT 2855#if EV_USE_SELECT
1310# include "ev_select.c" 2856# include "ev_select.c"
1311#endif 2857#endif
1312 2858
1313int 2859ecb_cold int
1314ev_version_major (void) 2860ev_version_major (void) EV_NOEXCEPT
1315{ 2861{
1316 return EV_VERSION_MAJOR; 2862 return EV_VERSION_MAJOR;
1317} 2863}
1318 2864
1319int 2865ecb_cold int
1320ev_version_minor (void) 2866ev_version_minor (void) EV_NOEXCEPT
1321{ 2867{
1322 return EV_VERSION_MINOR; 2868 return EV_VERSION_MINOR;
1323} 2869}
1324 2870
1325/* return true if we are running with elevated privileges and should ignore env variables */ 2871/* return true if we are running with elevated privileges and should ignore env variables */
1326int inline_size 2872inline_size ecb_cold int
1327enable_secure (void) 2873enable_secure (void)
1328{ 2874{
1329#ifdef _WIN32 2875#ifdef _WIN32
1330 return 0; 2876 return 0;
1331#else 2877#else
1332 return getuid () != geteuid () 2878 return getuid () != geteuid ()
1333 || getgid () != getegid (); 2879 || getgid () != getegid ();
1334#endif 2880#endif
1335} 2881}
1336 2882
2883ecb_cold
1337unsigned int 2884unsigned int
1338ev_supported_backends (void) 2885ev_supported_backends (void) EV_NOEXCEPT
1339{ 2886{
1340 unsigned int flags = 0; 2887 unsigned int flags = 0;
1341 2888
1342 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2889 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1343 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2890 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
1344 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 2891 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2892 if (EV_USE_LINUXAIO) flags |= EVBACKEND_LINUXAIO;
2893 if (EV_USE_IOURING ) flags |= EVBACKEND_IOURING;
1345 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 2894 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
1346 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2895 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
1347 2896
1348 return flags; 2897 return flags;
1349} 2898}
1350 2899
2900ecb_cold
1351unsigned int 2901unsigned int
1352ev_recommended_backends (void) 2902ev_recommended_backends (void) EV_NOEXCEPT
1353{ 2903{
1354 unsigned int flags = ev_supported_backends (); 2904 unsigned int flags = ev_supported_backends ();
1355 2905
1356#ifndef __NetBSD__ 2906#ifndef __NetBSD__
1357 /* kqueue is borked on everything but netbsd apparently */ 2907 /* kqueue is borked on everything but netbsd apparently */
… …
1361#ifdef __APPLE__ 2911#ifdef __APPLE__
1362 /* only select works correctly on that "unix-certified" platform */ 2912 /* only select works correctly on that "unix-certified" platform */
1363 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2913 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1364 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 2914 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1365#endif 2915#endif
2916#ifdef __FreeBSD__
2917 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2918#endif
2919
2920 /* TODO: linuxaio is very experimental */
2921#if !EV_RECOMMEND_LINUXAIO
2922 flags &= ~EVBACKEND_LINUXAIO;
2923#endif
2924 /* TODO: linuxaio is super experimental */
2925#if !EV_RECOMMEND_IOURING
2926 flags &= ~EVBACKEND_IOURING;
2927#endif
1366 2928
1367 return flags; 2929 return flags;
1368} 2930}
1369 2931
2932ecb_cold
1370unsigned int 2933unsigned int
1371ev_embeddable_backends (void) 2934ev_embeddable_backends (void) EV_NOEXCEPT
1372{ 2935{
1373 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2936 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1374 2937
1375 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2938 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1376 /* please fix it and tell me how to detect the fix */ 2939 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1377 flags &= ~EVBACKEND_EPOLL; 2940 flags &= ~EVBACKEND_EPOLL;
2941
2942 /* EVBACKEND_LINUXAIO is theoretically embeddable, but suffers from a performance overhead */
2943
2944 /* EVBACKEND_IOURING is practically embeddable, but the current implementation is not
2945 * because our backend_fd is the epoll fd we need as fallback.
2946 * if the kernel ever is fixed, this might change...
2947 */
1378 2948
1379 return flags; 2949 return flags;
1380} 2950}
1381 2951
1382unsigned int 2952unsigned int
1383ev_backend (EV_P) 2953ev_backend (EV_P) EV_NOEXCEPT
1384{ 2954{
1385 return backend; 2955 return backend;
1386} 2956}
1387 2957
1388#if EV_MINIMAL < 2 2958#if EV_FEATURE_API
1389unsigned int 2959unsigned int
1390ev_loop_count (EV_P) 2960ev_iteration (EV_P) EV_NOEXCEPT
1391{ 2961{
1392 return loop_count; 2962 return loop_count;
1393} 2963}
1394 2964
1395unsigned int 2965unsigned int
1396ev_loop_depth (EV_P) 2966ev_depth (EV_P) EV_NOEXCEPT
1397{ 2967{
1398 return loop_depth; 2968 return loop_depth;
1399} 2969}
1400 2970
1401void 2971void
1402ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2972ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1403{ 2973{
1404 io_blocktime = interval; 2974 io_blocktime = interval;
1405} 2975}
1406 2976
1407void 2977void
1408ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2978ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1409{ 2979{
1410 timeout_blocktime = interval; 2980 timeout_blocktime = interval;
1411} 2981}
1412 2982
1413void 2983void
1414ev_set_userdata (EV_P_ void *data) 2984ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
1415{ 2985{
1416 userdata = data; 2986 userdata = data;
1417} 2987}
1418 2988
1419void * 2989void *
1420ev_userdata (EV_P) 2990ev_userdata (EV_P) EV_NOEXCEPT
1421{ 2991{
1422 return userdata; 2992 return userdata;
1423} 2993}
1424 2994
2995void
1425void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2996ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
1426{ 2997{
1427 invoke_cb = invoke_pending_cb; 2998 invoke_cb = invoke_pending_cb;
1428} 2999}
1429 3000
3001void
1430void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 3002ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
1431{ 3003{
1432 release_cb = release; 3004 release_cb = release;
1433 acquire_cb = acquire; 3005 acquire_cb = acquire;
1434} 3006}
1435#endif 3007#endif
1436 3008
1437/* initialise a loop structure, must be zero-initialised */ 3009/* initialise a loop structure, must be zero-initialised */
1438static void noinline 3010ecb_noinline ecb_cold
3011static void
1439loop_init (EV_P_ unsigned int flags) 3012loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
1440{ 3013{
1441 if (!backend) 3014 if (!backend)
1442 { 3015 {
3016 origflags = flags;
3017
1443#if EV_USE_REALTIME 3018#if EV_USE_REALTIME
1444 if (!have_realtime) 3019 if (!have_realtime)
1445 { 3020 {
1446 struct timespec ts; 3021 struct timespec ts;
1447 3022
… …
1458 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 3033 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1459 have_monotonic = 1; 3034 have_monotonic = 1;
1460 } 3035 }
1461#endif 3036#endif
1462 3037
1463 ev_rt_now = ev_time ();
1464 mn_now = get_clock ();
1465 now_floor = mn_now;
1466 rtmn_diff = ev_rt_now - mn_now;
1467#if EV_MINIMAL < 2
1468 invoke_cb = ev_invoke_pending;
1469#endif
1470
1471 io_blocktime = 0.;
1472 timeout_blocktime = 0.;
1473 backend = 0;
1474 backend_fd = -1;
1475 gotasync = 0;
1476#if EV_USE_INOTIFY
1477 fs_fd = -2;
1478#endif
1479
1480 /* pid check not overridable via env */ 3038 /* pid check not overridable via env */
1481#ifndef _WIN32 3039#ifndef _WIN32
1482 if (flags & EVFLAG_FORKCHECK) 3040 if (flags & EVFLAG_FORKCHECK)
1483 curpid = getpid (); 3041 curpid = getpid ();
1484#endif 3042#endif
… …
1486 if (!(flags & EVFLAG_NOENV) 3044 if (!(flags & EVFLAG_NOENV)
1487 && !enable_secure () 3045 && !enable_secure ()
1488 && getenv ("LIBEV_FLAGS")) 3046 && getenv ("LIBEV_FLAGS"))
1489 flags = atoi (getenv ("LIBEV_FLAGS")); 3047 flags = atoi (getenv ("LIBEV_FLAGS"));
1490 3048
1491 if (!(flags & 0x0000ffffU)) 3049 ev_rt_now = ev_time ();
3050 mn_now = get_clock ();
3051 now_floor = mn_now;
3052 rtmn_diff = ev_rt_now - mn_now;
3053#if EV_FEATURE_API
3054 invoke_cb = ev_invoke_pending;
3055#endif
3056
3057 io_blocktime = 0.;
3058 timeout_blocktime = 0.;
3059 backend = 0;
3060 backend_fd = -1;
3061 sig_pending = 0;
3062#if EV_ASYNC_ENABLE
3063 async_pending = 0;
3064#endif
3065 pipe_write_skipped = 0;
3066 pipe_write_wanted = 0;
3067 evpipe [0] = -1;
3068 evpipe [1] = -1;
3069#if EV_USE_INOTIFY
3070 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
3071#endif
3072#if EV_USE_SIGNALFD
3073 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
3074#endif
3075
3076 if (!(flags & EVBACKEND_MASK))
1492 flags |= ev_recommended_backends (); 3077 flags |= ev_recommended_backends ();
1493 3078
3079#if EV_USE_IOCP
3080 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
3081#endif
1494#if EV_USE_PORT 3082#if EV_USE_PORT
1495 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 3083 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1496#endif 3084#endif
1497#if EV_USE_KQUEUE 3085#if EV_USE_KQUEUE
1498 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 3086 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
3087#endif
3088#if EV_USE_IOURING
3089 if (!backend && (flags & EVBACKEND_IOURING )) backend = iouring_init (EV_A_ flags);
3090#endif
3091#if EV_USE_LINUXAIO
3092 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
1499#endif 3093#endif
1500#if EV_USE_EPOLL 3094#if EV_USE_EPOLL
1501 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 3095 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
1502#endif 3096#endif
1503#if EV_USE_POLL 3097#if EV_USE_POLL
1504 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 3098 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
1505#endif 3099#endif
1506#if EV_USE_SELECT 3100#if EV_USE_SELECT
1507 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 3101 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
1508#endif 3102#endif
1509 3103
1510 ev_prepare_init (&pending_w, pendingcb); 3104 ev_prepare_init (&pending_w, pendingcb);
1511 3105
3106#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1512 ev_init (&pipe_w, pipecb); 3107 ev_init (&pipe_w, pipecb);
1513 ev_set_priority (&pipe_w, EV_MAXPRI); 3108 ev_set_priority (&pipe_w, EV_MAXPRI);
3109#endif
1514 } 3110 }
1515} 3111}
1516 3112
1517/* free up a loop structure */ 3113/* free up a loop structure */
1518static void noinline 3114ecb_cold
3115void
1519loop_destroy (EV_P) 3116ev_loop_destroy (EV_P)
1520{ 3117{
1521 int i; 3118 int i;
1522 3119
3120#if EV_MULTIPLICITY
3121 /* mimic free (0) */
3122 if (!EV_A)
3123 return;
3124#endif
3125
3126#if EV_CLEANUP_ENABLE
3127 /* queue cleanup watchers (and execute them) */
3128 if (ecb_expect_false (cleanupcnt))
3129 {
3130 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
3131 EV_INVOKE_PENDING;
3132 }
3133#endif
3134
3135#if EV_CHILD_ENABLE
3136 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
3137 {
3138 ev_ref (EV_A); /* child watcher */
3139 ev_signal_stop (EV_A_ &childev);
3140 }
3141#endif
3142
1523 if (ev_is_active (&pipe_w)) 3143 if (ev_is_active (&pipe_w))
1524 { 3144 {
1525 ev_ref (EV_A); /* signal watcher */ 3145 /*ev_ref (EV_A);*/
1526 ev_io_stop (EV_A_ &pipe_w); 3146 /*ev_io_stop (EV_A_ &pipe_w);*/
1527 3147
3148 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
3149 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
3150 }
3151
1528#if EV_USE_EVENTFD 3152#if EV_USE_SIGNALFD
1529 if (evfd >= 0) 3153 if (ev_is_active (&sigfd_w))
1530 close (evfd); 3154 close (sigfd);
1531#endif 3155#endif
1532
1533 if (evpipe [0] >= 0)
1534 {
1535 close (evpipe [0]);
1536 close (evpipe [1]);
1537 }
1538 }
1539 3156
1540#if EV_USE_INOTIFY 3157#if EV_USE_INOTIFY
1541 if (fs_fd >= 0) 3158 if (fs_fd >= 0)
1542 close (fs_fd); 3159 close (fs_fd);
1543#endif 3160#endif
1544 3161
1545 if (backend_fd >= 0) 3162 if (backend_fd >= 0)
1546 close (backend_fd); 3163 close (backend_fd);
1547 3164
3165#if EV_USE_IOCP
3166 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
3167#endif
1548#if EV_USE_PORT 3168#if EV_USE_PORT
1549 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3169 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1550#endif 3170#endif
1551#if EV_USE_KQUEUE 3171#if EV_USE_KQUEUE
1552 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3172 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
3173#endif
3174#if EV_USE_IOURING
3175 if (backend == EVBACKEND_IOURING ) iouring_destroy (EV_A);
3176#endif
3177#if EV_USE_LINUXAIO
3178 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
1553#endif 3179#endif
1554#if EV_USE_EPOLL 3180#if EV_USE_EPOLL
1555 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3181 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
1556#endif 3182#endif
1557#if EV_USE_POLL 3183#if EV_USE_POLL
1558 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3184 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
1559#endif 3185#endif
1560#if EV_USE_SELECT 3186#if EV_USE_SELECT
1561 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3187 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
1562#endif 3188#endif
1563 3189
1564 for (i = NUMPRI; i--; ) 3190 for (i = NUMPRI; i--; )
1565 { 3191 {
1566 array_free (pending, [i]); 3192 array_free (pending, [i]);
1567#if EV_IDLE_ENABLE 3193#if EV_IDLE_ENABLE
1568 array_free (idle, [i]); 3194 array_free (idle, [i]);
1569#endif 3195#endif
1570 } 3196 }
1571 3197
1572 ev_free (anfds); anfdmax = 0; 3198 ev_free (anfds); anfds = 0; anfdmax = 0;
1573 3199
1574 /* have to use the microsoft-never-gets-it-right macro */ 3200 /* have to use the microsoft-never-gets-it-right macro */
1575 array_free (rfeed, EMPTY); 3201 array_free (rfeed, EMPTY);
1576 array_free (fdchange, EMPTY); 3202 array_free (fdchange, EMPTY);
1577 array_free (timer, EMPTY); 3203 array_free (timer, EMPTY);
… …
1579 array_free (periodic, EMPTY); 3205 array_free (periodic, EMPTY);
1580#endif 3206#endif
1581#if EV_FORK_ENABLE 3207#if EV_FORK_ENABLE
1582 array_free (fork, EMPTY); 3208 array_free (fork, EMPTY);
1583#endif 3209#endif
3210#if EV_CLEANUP_ENABLE
3211 array_free (cleanup, EMPTY);
3212#endif
1584 array_free (prepare, EMPTY); 3213 array_free (prepare, EMPTY);
1585 array_free (check, EMPTY); 3214 array_free (check, EMPTY);
1586#if EV_ASYNC_ENABLE 3215#if EV_ASYNC_ENABLE
1587 array_free (async, EMPTY); 3216 array_free (async, EMPTY);
1588#endif 3217#endif
1589 3218
1590 backend = 0; 3219 backend = 0;
3220
3221#if EV_MULTIPLICITY
3222 if (ev_is_default_loop (EV_A))
3223#endif
3224 ev_default_loop_ptr = 0;
3225#if EV_MULTIPLICITY
3226 else
3227 ev_free (EV_A);
3228#endif
1591} 3229}
1592 3230
1593#if EV_USE_INOTIFY 3231#if EV_USE_INOTIFY
1594inline_size void infy_fork (EV_P); 3232inline_size void infy_fork (EV_P);
1595#endif 3233#endif
1596 3234
1597inline_size void 3235inline_size void
1598loop_fork (EV_P) 3236loop_fork (EV_P)
1599{ 3237{
1600#if EV_USE_PORT 3238#if EV_USE_PORT
1601 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3239 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1602#endif 3240#endif
1603#if EV_USE_KQUEUE 3241#if EV_USE_KQUEUE
1604 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 3242 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
3243#endif
3244#if EV_USE_IOURING
3245 if (backend == EVBACKEND_IOURING ) iouring_fork (EV_A);
3246#endif
3247#if EV_USE_LINUXAIO
3248 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
1605#endif 3249#endif
1606#if EV_USE_EPOLL 3250#if EV_USE_EPOLL
1607 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3251 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
1608#endif 3252#endif
1609#if EV_USE_INOTIFY 3253#if EV_USE_INOTIFY
1610 infy_fork (EV_A); 3254 infy_fork (EV_A);
1611#endif 3255#endif
1612 3256
3257#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1613 if (ev_is_active (&pipe_w)) 3258 if (ev_is_active (&pipe_w) && postfork != 2)
1614 { 3259 {
1615 /* this "locks" the handlers against writing to the pipe */ 3260 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1616 /* while we modify the fd vars */
1617 gotsig = 1;
1618#if EV_ASYNC_ENABLE
1619 gotasync = 1;
1620#endif
1621 3261
1622 ev_ref (EV_A); 3262 ev_ref (EV_A);
1623 ev_io_stop (EV_A_ &pipe_w); 3263 ev_io_stop (EV_A_ &pipe_w);
1624 3264
1625#if EV_USE_EVENTFD
1626 if (evfd >= 0)
1627 close (evfd);
1628#endif
1629
1630 if (evpipe [0] >= 0) 3265 if (evpipe [0] >= 0)
1631 { 3266 EV_WIN32_CLOSE_FD (evpipe [0]);
1632 close (evpipe [0]);
1633 close (evpipe [1]);
1634 }
1635 3267
1636 evpipe_init (EV_A); 3268 evpipe_init (EV_A);
1637 /* now iterate over everything, in case we missed something */ 3269 /* iterate over everything, in case we missed something before */
1638 pipecb (EV_A_ &pipe_w, EV_READ); 3270 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1639 } 3271 }
3272#endif
1640 3273
1641 postfork = 0; 3274 postfork = 0;
1642} 3275}
1643 3276
1644#if EV_MULTIPLICITY 3277#if EV_MULTIPLICITY
1645 3278
3279ecb_cold
1646struct ev_loop * 3280struct ev_loop *
1647ev_loop_new (unsigned int flags) 3281ev_loop_new (unsigned int flags) EV_NOEXCEPT
1648{ 3282{
1649 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3283 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1650 3284
1651 memset (loop, 0, sizeof (struct ev_loop)); 3285 memset (EV_A, 0, sizeof (struct ev_loop));
1652
1653 loop_init (EV_A_ flags); 3286 loop_init (EV_A_ flags);
1654 3287
1655 if (ev_backend (EV_A)) 3288 if (ev_backend (EV_A))
1656 return loop; 3289 return EV_A;
1657 3290
3291 ev_free (EV_A);
1658 return 0; 3292 return 0;
1659} 3293}
1660 3294
1661void
1662ev_loop_destroy (EV_P)
1663{
1664 loop_destroy (EV_A);
1665 ev_free (loop);
1666}
1667
1668void
1669ev_loop_fork (EV_P)
1670{
1671 postfork = 1; /* must be in line with ev_default_fork */
1672}
1673#endif /* multiplicity */ 3295#endif /* multiplicity */
1674 3296
1675#if EV_VERIFY 3297#if EV_VERIFY
1676static void noinline 3298ecb_noinline ecb_cold
3299static void
1677verify_watcher (EV_P_ W w) 3300verify_watcher (EV_P_ W w)
1678{ 3301{
1679 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3302 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1680 3303
1681 if (w->pending) 3304 if (w->pending)
1682 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3305 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1683} 3306}
1684 3307
1685static void noinline 3308ecb_noinline ecb_cold
3309static void
1686verify_heap (EV_P_ ANHE *heap, int N) 3310verify_heap (EV_P_ ANHE *heap, int N)
1687{ 3311{
1688 int i; 3312 int i;
1689 3313
1690 for (i = HEAP0; i < N + HEAP0; ++i) 3314 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1695 3319
1696 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3320 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1697 } 3321 }
1698} 3322}
1699 3323
1700static void noinline 3324ecb_noinline ecb_cold
3325static void
1701array_verify (EV_P_ W *ws, int cnt) 3326array_verify (EV_P_ W *ws, int cnt)
1702{ 3327{
1703 while (cnt--) 3328 while (cnt--)
1704 { 3329 {
1705 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3330 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1706 verify_watcher (EV_A_ ws [cnt]); 3331 verify_watcher (EV_A_ ws [cnt]);
1707 } 3332 }
1708} 3333}
1709#endif 3334#endif
1710 3335
1711#if EV_MINIMAL < 2 3336#if EV_FEATURE_API
1712void 3337void ecb_cold
1713ev_loop_verify (EV_P) 3338ev_verify (EV_P) EV_NOEXCEPT
1714{ 3339{
1715#if EV_VERIFY 3340#if EV_VERIFY
1716 int i; 3341 int i;
1717 WL w; 3342 WL w, w2;
1718 3343
1719 assert (activecnt >= -1); 3344 assert (activecnt >= -1);
1720 3345
1721 assert (fdchangemax >= fdchangecnt); 3346 assert (fdchangemax >= fdchangecnt);
1722 for (i = 0; i < fdchangecnt; ++i) 3347 for (i = 0; i < fdchangecnt; ++i)
1723 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3348 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1724 3349
1725 assert (anfdmax >= 0); 3350 assert (anfdmax >= 0);
1726 for (i = 0; i < anfdmax; ++i) 3351 for (i = 0; i < anfdmax; ++i)
3352 {
3353 int j = 0;
3354
1727 for (w = anfds [i].head; w; w = w->next) 3355 for (w = w2 = anfds [i].head; w; w = w->next)
1728 { 3356 {
1729 verify_watcher (EV_A_ (W)w); 3357 verify_watcher (EV_A_ (W)w);
3358
3359 if (j++ & 1)
3360 {
3361 assert (("libev: io watcher list contains a loop", w != w2));
3362 w2 = w2->next;
3363 }
3364
1730 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3365 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1731 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 3366 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1732 } 3367 }
3368 }
1733 3369
1734 assert (timermax >= timercnt); 3370 assert (timermax >= timercnt);
1735 verify_heap (EV_A_ timers, timercnt); 3371 verify_heap (EV_A_ timers, timercnt);
1736 3372
1737#if EV_PERIODIC_ENABLE 3373#if EV_PERIODIC_ENABLE
… …
1752#if EV_FORK_ENABLE 3388#if EV_FORK_ENABLE
1753 assert (forkmax >= forkcnt); 3389 assert (forkmax >= forkcnt);
1754 array_verify (EV_A_ (W *)forks, forkcnt); 3390 array_verify (EV_A_ (W *)forks, forkcnt);
1755#endif 3391#endif
1756 3392
3393#if EV_CLEANUP_ENABLE
3394 assert (cleanupmax >= cleanupcnt);
3395 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
3396#endif
3397
1757#if EV_ASYNC_ENABLE 3398#if EV_ASYNC_ENABLE
1758 assert (asyncmax >= asynccnt); 3399 assert (asyncmax >= asynccnt);
1759 array_verify (EV_A_ (W *)asyncs, asynccnt); 3400 array_verify (EV_A_ (W *)asyncs, asynccnt);
1760#endif 3401#endif
1761 3402
3403#if EV_PREPARE_ENABLE
1762 assert (preparemax >= preparecnt); 3404 assert (preparemax >= preparecnt);
1763 array_verify (EV_A_ (W *)prepares, preparecnt); 3405 array_verify (EV_A_ (W *)prepares, preparecnt);
3406#endif
1764 3407
3408#if EV_CHECK_ENABLE
1765 assert (checkmax >= checkcnt); 3409 assert (checkmax >= checkcnt);
1766 array_verify (EV_A_ (W *)checks, checkcnt); 3410 array_verify (EV_A_ (W *)checks, checkcnt);
3411#endif
1767 3412
1768# if 0 3413# if 0
3414#if EV_CHILD_ENABLE
1769 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 3415 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1770 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 3416 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
3417#endif
1771# endif 3418# endif
1772#endif 3419#endif
1773} 3420}
1774#endif 3421#endif
1775 3422
1776#if EV_MULTIPLICITY 3423#if EV_MULTIPLICITY
3424ecb_cold
1777struct ev_loop * 3425struct ev_loop *
1778ev_default_loop_init (unsigned int flags)
1779#else 3426#else
1780int 3427int
3428#endif
1781ev_default_loop (unsigned int flags) 3429ev_default_loop (unsigned int flags) EV_NOEXCEPT
1782#endif
1783{ 3430{
1784 if (!ev_default_loop_ptr) 3431 if (!ev_default_loop_ptr)
1785 { 3432 {
1786#if EV_MULTIPLICITY 3433#if EV_MULTIPLICITY
1787 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 3434 EV_P = ev_default_loop_ptr = &default_loop_struct;
1788#else 3435#else
1789 ev_default_loop_ptr = 1; 3436 ev_default_loop_ptr = 1;
1790#endif 3437#endif
1791 3438
1792 loop_init (EV_A_ flags); 3439 loop_init (EV_A_ flags);
1793 3440
1794 if (ev_backend (EV_A)) 3441 if (ev_backend (EV_A))
1795 { 3442 {
1796#ifndef _WIN32 3443#if EV_CHILD_ENABLE
1797 ev_signal_init (&childev, childcb, SIGCHLD); 3444 ev_signal_init (&childev, childcb, SIGCHLD);
1798 ev_set_priority (&childev, EV_MAXPRI); 3445 ev_set_priority (&childev, EV_MAXPRI);
1799 ev_signal_start (EV_A_ &childev); 3446 ev_signal_start (EV_A_ &childev);
1800 ev_unref (EV_A); /* child watcher should not keep loop alive */ 3447 ev_unref (EV_A); /* child watcher should not keep loop alive */
1801#endif 3448#endif
… …
1806 3453
1807 return ev_default_loop_ptr; 3454 return ev_default_loop_ptr;
1808} 3455}
1809 3456
1810void 3457void
1811ev_default_destroy (void) 3458ev_loop_fork (EV_P) EV_NOEXCEPT
1812{ 3459{
1813#if EV_MULTIPLICITY 3460 postfork = 1;
1814 struct ev_loop *loop = ev_default_loop_ptr;
1815#endif
1816
1817 ev_default_loop_ptr = 0;
1818
1819#ifndef _WIN32
1820 ev_ref (EV_A); /* child watcher */
1821 ev_signal_stop (EV_A_ &childev);
1822#endif
1823
1824 loop_destroy (EV_A);
1825}
1826
1827void
1828ev_default_fork (void)
1829{
1830#if EV_MULTIPLICITY
1831 struct ev_loop *loop = ev_default_loop_ptr;
1832#endif
1833
1834 postfork = 1; /* must be in line with ev_loop_fork */
1835} 3461}
1836 3462
1837/*****************************************************************************/ 3463/*****************************************************************************/
1838 3464
1839void 3465void
… …
1841{ 3467{
1842 EV_CB_INVOKE ((W)w, revents); 3468 EV_CB_INVOKE ((W)w, revents);
1843} 3469}
1844 3470
1845unsigned int 3471unsigned int
1846ev_pending_count (EV_P) 3472ev_pending_count (EV_P) EV_NOEXCEPT
1847{ 3473{
1848 int pri; 3474 int pri;
1849 unsigned int count = 0; 3475 unsigned int count = 0;
1850 3476
1851 for (pri = NUMPRI; pri--; ) 3477 for (pri = NUMPRI; pri--; )
1852 count += pendingcnt [pri]; 3478 count += pendingcnt [pri];
1853 3479
1854 return count; 3480 return count;
1855} 3481}
1856 3482
1857void noinline 3483ecb_noinline
3484void
1858ev_invoke_pending (EV_P) 3485ev_invoke_pending (EV_P)
1859{ 3486{
1860 int pri; 3487 pendingpri = NUMPRI;
1861 3488
1862 for (pri = NUMPRI; pri--; ) 3489 do
3490 {
3491 --pendingpri;
3492
3493 /* pendingpri possibly gets modified in the inner loop */
1863 while (pendingcnt [pri]) 3494 while (pendingcnt [pendingpri])
1864 { 3495 {
1865 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3496 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
1866 3497
1867 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1868 /* ^ this is no longer true, as pending_w could be here */
1869
1870 p->w->pending = 0; 3498 p->w->pending = 0;
1871 EV_CB_INVOKE (p->w, p->events); 3499 EV_CB_INVOKE (p->w, p->events);
1872 EV_FREQUENT_CHECK; 3500 EV_FREQUENT_CHECK;
1873 } 3501 }
3502 }
3503 while (pendingpri);
1874} 3504}
1875 3505
1876#if EV_IDLE_ENABLE 3506#if EV_IDLE_ENABLE
1877/* make idle watchers pending. this handles the "call-idle */ 3507/* make idle watchers pending. this handles the "call-idle */
1878/* only when higher priorities are idle" logic */ 3508/* only when higher priorities are idle" logic */
1879inline_size void 3509inline_size void
1880idle_reify (EV_P) 3510idle_reify (EV_P)
1881{ 3511{
1882 if (expect_false (idleall)) 3512 if (ecb_expect_false (idleall))
1883 { 3513 {
1884 int pri; 3514 int pri;
1885 3515
1886 for (pri = NUMPRI; pri--; ) 3516 for (pri = NUMPRI; pri--; )
1887 { 3517 {
… …
1917 { 3547 {
1918 ev_at (w) += w->repeat; 3548 ev_at (w) += w->repeat;
1919 if (ev_at (w) < mn_now) 3549 if (ev_at (w) < mn_now)
1920 ev_at (w) = mn_now; 3550 ev_at (w) = mn_now;
1921 3551
1922 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 3552 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > EV_TS_CONST (0.)));
1923 3553
1924 ANHE_at_cache (timers [HEAP0]); 3554 ANHE_at_cache (timers [HEAP0]);
1925 downheap (timers, timercnt, HEAP0); 3555 downheap (timers, timercnt, HEAP0);
1926 } 3556 }
1927 else 3557 else
… …
1930 EV_FREQUENT_CHECK; 3560 EV_FREQUENT_CHECK;
1931 feed_reverse (EV_A_ (W)w); 3561 feed_reverse (EV_A_ (W)w);
1932 } 3562 }
1933 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 3563 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1934 3564
1935 feed_reverse_done (EV_A_ EV_TIMEOUT); 3565 feed_reverse_done (EV_A_ EV_TIMER);
1936 } 3566 }
1937} 3567}
1938 3568
1939#if EV_PERIODIC_ENABLE 3569#if EV_PERIODIC_ENABLE
3570
3571ecb_noinline
3572static void
3573periodic_recalc (EV_P_ ev_periodic *w)
3574{
3575 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3576 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3577
3578 /* the above almost always errs on the low side */
3579 while (at <= ev_rt_now)
3580 {
3581 ev_tstamp nat = at + w->interval;
3582
3583 /* when resolution fails us, we use ev_rt_now */
3584 if (ecb_expect_false (nat == at))
3585 {
3586 at = ev_rt_now;
3587 break;
3588 }
3589
3590 at = nat;
3591 }
3592
3593 ev_at (w) = at;
3594}
3595
1940/* make periodics pending */ 3596/* make periodics pending */
1941inline_size void 3597inline_size void
1942periodics_reify (EV_P) 3598periodics_reify (EV_P)
1943{ 3599{
1944 EV_FREQUENT_CHECK; 3600 EV_FREQUENT_CHECK;
1945 3601
1946 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3602 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1947 { 3603 {
1948 int feed_count = 0;
1949
1950 do 3604 do
1951 { 3605 {
1952 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3606 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
1953 3607
1954 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3608 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
1963 ANHE_at_cache (periodics [HEAP0]); 3617 ANHE_at_cache (periodics [HEAP0]);
1964 downheap (periodics, periodiccnt, HEAP0); 3618 downheap (periodics, periodiccnt, HEAP0);
1965 } 3619 }
1966 else if (w->interval) 3620 else if (w->interval)
1967 { 3621 {
1968 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3622 periodic_recalc (EV_A_ w);
1969 /* if next trigger time is not sufficiently in the future, put it there */
1970 /* this might happen because of floating point inexactness */
1971 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1972 {
1973 ev_at (w) += w->interval;
1974
1975 /* if interval is unreasonably low we might still have a time in the past */
1976 /* so correct this. this will make the periodic very inexact, but the user */
1977 /* has effectively asked to get triggered more often than possible */
1978 if (ev_at (w) < ev_rt_now)
1979 ev_at (w) = ev_rt_now;
1980 }
1981
1982 ANHE_at_cache (periodics [HEAP0]); 3623 ANHE_at_cache (periodics [HEAP0]);
1983 downheap (periodics, periodiccnt, HEAP0); 3624 downheap (periodics, periodiccnt, HEAP0);
1984 } 3625 }
1985 else 3626 else
1986 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3627 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
1993 feed_reverse_done (EV_A_ EV_PERIODIC); 3634 feed_reverse_done (EV_A_ EV_PERIODIC);
1994 } 3635 }
1995} 3636}
1996 3637
1997/* simply recalculate all periodics */ 3638/* simply recalculate all periodics */
1998/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 3639/* TODO: maybe ensure that at least one event happens when jumping forward? */
1999static void noinline 3640ecb_noinline ecb_cold
3641static void
2000periodics_reschedule (EV_P) 3642periodics_reschedule (EV_P)
2001{ 3643{
2002 int i; 3644 int i;
2003 3645
2004 /* adjust periodics after time jump */ 3646 /* adjust periodics after time jump */
… …
2007 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3649 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2008 3650
2009 if (w->reschedule_cb) 3651 if (w->reschedule_cb)
2010 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3652 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2011 else if (w->interval) 3653 else if (w->interval)
2012 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3654 periodic_recalc (EV_A_ w);
2013 3655
2014 ANHE_at_cache (periodics [i]); 3656 ANHE_at_cache (periodics [i]);
2015 } 3657 }
2016 3658
2017 reheap (periodics, periodiccnt); 3659 reheap (periodics, periodiccnt);
2018} 3660}
2019#endif 3661#endif
2020 3662
2021/* adjust all timers by a given offset */ 3663/* adjust all timers by a given offset */
2022static void noinline 3664ecb_noinline ecb_cold
3665static void
2023timers_reschedule (EV_P_ ev_tstamp adjust) 3666timers_reschedule (EV_P_ ev_tstamp adjust)
2024{ 3667{
2025 int i; 3668 int i;
2026 3669
2027 for (i = 0; i < timercnt; ++i) 3670 for (i = 0; i < timercnt; ++i)
… …
2031 ANHE_at_cache (*he); 3674 ANHE_at_cache (*he);
2032 } 3675 }
2033} 3676}
2034 3677
2035/* fetch new monotonic and realtime times from the kernel */ 3678/* fetch new monotonic and realtime times from the kernel */
2036/* also detetc if there was a timejump, and act accordingly */ 3679/* also detect if there was a timejump, and act accordingly */
2037inline_speed void 3680inline_speed void
2038time_update (EV_P_ ev_tstamp max_block) 3681time_update (EV_P_ ev_tstamp max_block)
2039{ 3682{
2040#if EV_USE_MONOTONIC 3683#if EV_USE_MONOTONIC
2041 if (expect_true (have_monotonic)) 3684 if (ecb_expect_true (have_monotonic))
2042 { 3685 {
2043 int i; 3686 int i;
2044 ev_tstamp odiff = rtmn_diff; 3687 ev_tstamp odiff = rtmn_diff;
2045 3688
2046 mn_now = get_clock (); 3689 mn_now = get_clock ();
2047 3690
2048 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3691 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
2049 /* interpolate in the meantime */ 3692 /* interpolate in the meantime */
2050 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 3693 if (ecb_expect_true (mn_now - now_floor < EV_TS_CONST (MIN_TIMEJUMP * .5)))
2051 { 3694 {
2052 ev_rt_now = rtmn_diff + mn_now; 3695 ev_rt_now = rtmn_diff + mn_now;
2053 return; 3696 return;
2054 } 3697 }
2055 3698
… …
2064 * doesn't hurt either as we only do this on time-jumps or 3707 * doesn't hurt either as we only do this on time-jumps or
2065 * in the unlikely event of having been preempted here. 3708 * in the unlikely event of having been preempted here.
2066 */ 3709 */
2067 for (i = 4; --i; ) 3710 for (i = 4; --i; )
2068 { 3711 {
3712 ev_tstamp diff;
2069 rtmn_diff = ev_rt_now - mn_now; 3713 rtmn_diff = ev_rt_now - mn_now;
2070 3714
2071 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3715 diff = odiff - rtmn_diff;
3716
3717 if (ecb_expect_true ((diff < EV_TS_CONST (0.) ? -diff : diff) < EV_TS_CONST (MIN_TIMEJUMP)))
2072 return; /* all is well */ 3718 return; /* all is well */
2073 3719
2074 ev_rt_now = ev_time (); 3720 ev_rt_now = ev_time ();
2075 mn_now = get_clock (); 3721 mn_now = get_clock ();
2076 now_floor = mn_now; 3722 now_floor = mn_now;
… …
2085 else 3731 else
2086#endif 3732#endif
2087 { 3733 {
2088 ev_rt_now = ev_time (); 3734 ev_rt_now = ev_time ();
2089 3735
2090 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 3736 if (ecb_expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + EV_TS_CONST (MIN_TIMEJUMP)))
2091 { 3737 {
2092 /* adjust timers. this is easy, as the offset is the same for all of them */ 3738 /* adjust timers. this is easy, as the offset is the same for all of them */
2093 timers_reschedule (EV_A_ ev_rt_now - mn_now); 3739 timers_reschedule (EV_A_ ev_rt_now - mn_now);
2094#if EV_PERIODIC_ENABLE 3740#if EV_PERIODIC_ENABLE
2095 periodics_reschedule (EV_A); 3741 periodics_reschedule (EV_A);
… …
2098 3744
2099 mn_now = ev_rt_now; 3745 mn_now = ev_rt_now;
2100 } 3746 }
2101} 3747}
2102 3748
2103void 3749int
2104ev_loop (EV_P_ int flags) 3750ev_run (EV_P_ int flags)
2105{ 3751{
2106#if EV_MINIMAL < 2 3752#if EV_FEATURE_API
2107 ++loop_depth; 3753 ++loop_depth;
2108#endif 3754#endif
2109 3755
2110 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 3756 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2111 3757
2112 loop_done = EVUNLOOP_CANCEL; 3758 loop_done = EVBREAK_CANCEL;
2113 3759
2114 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 3760 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2115 3761
2116 do 3762 do
2117 { 3763 {
2118#if EV_VERIFY >= 2 3764#if EV_VERIFY >= 2
2119 ev_loop_verify (EV_A); 3765 ev_verify (EV_A);
2120#endif 3766#endif
2121 3767
2122#ifndef _WIN32 3768#ifndef _WIN32
2123 if (expect_false (curpid)) /* penalise the forking check even more */ 3769 if (ecb_expect_false (curpid)) /* penalise the forking check even more */
2124 if (expect_false (getpid () != curpid)) 3770 if (ecb_expect_false (getpid () != curpid))
2125 { 3771 {
2126 curpid = getpid (); 3772 curpid = getpid ();
2127 postfork = 1; 3773 postfork = 1;
2128 } 3774 }
2129#endif 3775#endif
2130 3776
2131#if EV_FORK_ENABLE 3777#if EV_FORK_ENABLE
2132 /* we might have forked, so queue fork handlers */ 3778 /* we might have forked, so queue fork handlers */
2133 if (expect_false (postfork)) 3779 if (ecb_expect_false (postfork))
2134 if (forkcnt) 3780 if (forkcnt)
2135 { 3781 {
2136 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3782 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2137 EV_INVOKE_PENDING; 3783 EV_INVOKE_PENDING;
2138 } 3784 }
2139#endif 3785#endif
2140 3786
3787#if EV_PREPARE_ENABLE
2141 /* queue prepare watchers (and execute them) */ 3788 /* queue prepare watchers (and execute them) */
2142 if (expect_false (preparecnt)) 3789 if (ecb_expect_false (preparecnt))
2143 { 3790 {
2144 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3791 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2145 EV_INVOKE_PENDING; 3792 EV_INVOKE_PENDING;
2146 } 3793 }
3794#endif
2147 3795
2148 if (expect_false (loop_done)) 3796 if (ecb_expect_false (loop_done))
2149 break; 3797 break;
2150 3798
2151 /* we might have forked, so reify kernel state if necessary */ 3799 /* we might have forked, so reify kernel state if necessary */
2152 if (expect_false (postfork)) 3800 if (ecb_expect_false (postfork))
2153 loop_fork (EV_A); 3801 loop_fork (EV_A);
2154 3802
2155 /* update fd-related kernel structures */ 3803 /* update fd-related kernel structures */
2156 fd_reify (EV_A); 3804 fd_reify (EV_A);
2157 3805
2158 /* calculate blocking time */ 3806 /* calculate blocking time */
2159 { 3807 {
2160 ev_tstamp waittime = 0.; 3808 ev_tstamp waittime = 0.;
2161 ev_tstamp sleeptime = 0.; 3809 ev_tstamp sleeptime = 0.;
2162 3810
3811 /* remember old timestamp for io_blocktime calculation */
3812 ev_tstamp prev_mn_now = mn_now;
3813
3814 /* update time to cancel out callback processing overhead */
3815 time_update (EV_A_ EV_TS_CONST (EV_TSTAMP_HUGE));
3816
3817 /* from now on, we want a pipe-wake-up */
3818 pipe_write_wanted = 1;
3819
3820 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3821
2163 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3822 if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2164 { 3823 {
2165 /* remember old timestamp for io_blocktime calculation */
2166 ev_tstamp prev_mn_now = mn_now;
2167
2168 /* update time to cancel out callback processing overhead */
2169 time_update (EV_A_ 1e100);
2170
2171 waittime = MAX_BLOCKTIME; 3824 waittime = EV_TS_CONST (MAX_BLOCKTIME);
2172 3825
2173 if (timercnt) 3826 if (timercnt)
2174 { 3827 {
2175 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3828 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2176 if (waittime > to) waittime = to; 3829 if (waittime > to) waittime = to;
2177 } 3830 }
2178 3831
2179#if EV_PERIODIC_ENABLE 3832#if EV_PERIODIC_ENABLE
2180 if (periodiccnt) 3833 if (periodiccnt)
2181 { 3834 {
2182 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3835 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2183 if (waittime > to) waittime = to; 3836 if (waittime > to) waittime = to;
2184 } 3837 }
2185#endif 3838#endif
2186 3839
2187 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3840 /* don't let timeouts decrease the waittime below timeout_blocktime */
2188 if (expect_false (waittime < timeout_blocktime)) 3841 if (ecb_expect_false (waittime < timeout_blocktime))
2189 waittime = timeout_blocktime; 3842 waittime = timeout_blocktime;
2190 3843
3844 /* at this point, we NEED to wait, so we have to ensure */
3845 /* to pass a minimum nonzero value to the backend */
3846 if (ecb_expect_false (waittime < backend_mintime))
3847 waittime = backend_mintime;
3848
2191 /* extra check because io_blocktime is commonly 0 */ 3849 /* extra check because io_blocktime is commonly 0 */
2192 if (expect_false (io_blocktime)) 3850 if (ecb_expect_false (io_blocktime))
2193 { 3851 {
2194 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3852 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2195 3853
2196 if (sleeptime > waittime - backend_fudge) 3854 if (sleeptime > waittime - backend_mintime)
2197 sleeptime = waittime - backend_fudge; 3855 sleeptime = waittime - backend_mintime;
2198 3856
2199 if (expect_true (sleeptime > 0.)) 3857 if (ecb_expect_true (sleeptime > EV_TS_CONST (0.)))
2200 { 3858 {
2201 ev_sleep (sleeptime); 3859 ev_sleep (sleeptime);
2202 waittime -= sleeptime; 3860 waittime -= sleeptime;
2203 } 3861 }
2204 } 3862 }
2205 } 3863 }
2206 3864
2207#if EV_MINIMAL < 2 3865#if EV_FEATURE_API
2208 ++loop_count; 3866 ++loop_count;
2209#endif 3867#endif
2210 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3868 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2211 backend_poll (EV_A_ waittime); 3869 backend_poll (EV_A_ waittime);
2212 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 3870 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3871
3872 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3873
3874 ECB_MEMORY_FENCE_ACQUIRE;
3875 if (pipe_write_skipped)
3876 {
3877 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3878 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3879 }
2213 3880
2214 /* update ev_rt_now, do magic */ 3881 /* update ev_rt_now, do magic */
2215 time_update (EV_A_ waittime + sleeptime); 3882 time_update (EV_A_ waittime + sleeptime);
2216 } 3883 }
2217 3884
… …
2224#if EV_IDLE_ENABLE 3891#if EV_IDLE_ENABLE
2225 /* queue idle watchers unless other events are pending */ 3892 /* queue idle watchers unless other events are pending */
2226 idle_reify (EV_A); 3893 idle_reify (EV_A);
2227#endif 3894#endif
2228 3895
3896#if EV_CHECK_ENABLE
2229 /* queue check watchers, to be executed first */ 3897 /* queue check watchers, to be executed first */
2230 if (expect_false (checkcnt)) 3898 if (ecb_expect_false (checkcnt))
2231 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3899 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3900#endif
2232 3901
2233 EV_INVOKE_PENDING; 3902 EV_INVOKE_PENDING;
2234 } 3903 }
2235 while (expect_true ( 3904 while (ecb_expect_true (
2236 activecnt 3905 activecnt
2237 && !loop_done 3906 && !loop_done
2238 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3907 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2239 )); 3908 ));
2240 3909
2241 if (loop_done == EVUNLOOP_ONE) 3910 if (loop_done == EVBREAK_ONE)
2242 loop_done = EVUNLOOP_CANCEL; 3911 loop_done = EVBREAK_CANCEL;
2243 3912
2244#if EV_MINIMAL < 2 3913#if EV_FEATURE_API
2245 --loop_depth; 3914 --loop_depth;
2246#endif 3915#endif
2247}
2248 3916
3917 return activecnt;
3918}
3919
2249void 3920void
2250ev_unloop (EV_P_ int how) 3921ev_break (EV_P_ int how) EV_NOEXCEPT
2251{ 3922{
2252 loop_done = how; 3923 loop_done = how;
2253} 3924}
2254 3925
2255void 3926void
2256ev_ref (EV_P) 3927ev_ref (EV_P) EV_NOEXCEPT
2257{ 3928{
2258 ++activecnt; 3929 ++activecnt;
2259} 3930}
2260 3931
2261void 3932void
2262ev_unref (EV_P) 3933ev_unref (EV_P) EV_NOEXCEPT
2263{ 3934{
2264 --activecnt; 3935 --activecnt;
2265} 3936}
2266 3937
2267void 3938void
2268ev_now_update (EV_P) 3939ev_now_update (EV_P) EV_NOEXCEPT
2269{ 3940{
2270 time_update (EV_A_ 1e100); 3941 time_update (EV_A_ EV_TSTAMP_HUGE);
2271} 3942}
2272 3943
2273void 3944void
2274ev_suspend (EV_P) 3945ev_suspend (EV_P) EV_NOEXCEPT
2275{ 3946{
2276 ev_now_update (EV_A); 3947 ev_now_update (EV_A);
2277} 3948}
2278 3949
2279void 3950void
2280ev_resume (EV_P) 3951ev_resume (EV_P) EV_NOEXCEPT
2281{ 3952{
2282 ev_tstamp mn_prev = mn_now; 3953 ev_tstamp mn_prev = mn_now;
2283 3954
2284 ev_now_update (EV_A); 3955 ev_now_update (EV_A);
2285 timers_reschedule (EV_A_ mn_now - mn_prev); 3956 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2302inline_size void 3973inline_size void
2303wlist_del (WL *head, WL elem) 3974wlist_del (WL *head, WL elem)
2304{ 3975{
2305 while (*head) 3976 while (*head)
2306 { 3977 {
2307 if (*head == elem) 3978 if (ecb_expect_true (*head == elem))
2308 { 3979 {
2309 *head = elem->next; 3980 *head = elem->next;
2310 return; 3981 break;
2311 } 3982 }
2312 3983
2313 head = &(*head)->next; 3984 head = &(*head)->next;
2314 } 3985 }
2315} 3986}
… …
2324 w->pending = 0; 3995 w->pending = 0;
2325 } 3996 }
2326} 3997}
2327 3998
2328int 3999int
2329ev_clear_pending (EV_P_ void *w) 4000ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
2330{ 4001{
2331 W w_ = (W)w; 4002 W w_ = (W)w;
2332 int pending = w_->pending; 4003 int pending = w_->pending;
2333 4004
2334 if (expect_true (pending)) 4005 if (ecb_expect_true (pending))
2335 { 4006 {
2336 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 4007 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2337 p->w = (W)&pending_w; 4008 p->w = (W)&pending_w;
2338 w_->pending = 0; 4009 w_->pending = 0;
2339 return p->events; 4010 return p->events;
… …
2366 w->active = 0; 4037 w->active = 0;
2367} 4038}
2368 4039
2369/*****************************************************************************/ 4040/*****************************************************************************/
2370 4041
2371void noinline 4042ecb_noinline
4043void
2372ev_io_start (EV_P_ ev_io *w) 4044ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
2373{ 4045{
2374 int fd = w->fd; 4046 int fd = w->fd;
2375 4047
2376 if (expect_false (ev_is_active (w))) 4048 if (ecb_expect_false (ev_is_active (w)))
2377 return; 4049 return;
2378 4050
2379 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 4051 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2380 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 4052 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2381 4053
4054#if EV_VERIFY >= 2
4055 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
4056#endif
2382 EV_FREQUENT_CHECK; 4057 EV_FREQUENT_CHECK;
2383 4058
2384 ev_start (EV_A_ (W)w, 1); 4059 ev_start (EV_A_ (W)w, 1);
2385 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 4060 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
2386 wlist_add (&anfds[fd].head, (WL)w); 4061 wlist_add (&anfds[fd].head, (WL)w);
4062
4063 /* common bug, apparently */
4064 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
2387 4065
2388 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 4066 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2389 w->events &= ~EV__IOFDSET; 4067 w->events &= ~EV__IOFDSET;
2390 4068
2391 EV_FREQUENT_CHECK; 4069 EV_FREQUENT_CHECK;
2392} 4070}
2393 4071
2394void noinline 4072ecb_noinline
4073void
2395ev_io_stop (EV_P_ ev_io *w) 4074ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
2396{ 4075{
2397 clear_pending (EV_A_ (W)w); 4076 clear_pending (EV_A_ (W)w);
2398 if (expect_false (!ev_is_active (w))) 4077 if (ecb_expect_false (!ev_is_active (w)))
2399 return; 4078 return;
2400 4079
2401 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 4080 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2402 4081
4082#if EV_VERIFY >= 2
4083 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
4084#endif
2403 EV_FREQUENT_CHECK; 4085 EV_FREQUENT_CHECK;
2404 4086
2405 wlist_del (&anfds[w->fd].head, (WL)w); 4087 wlist_del (&anfds[w->fd].head, (WL)w);
2406 ev_stop (EV_A_ (W)w); 4088 ev_stop (EV_A_ (W)w);
2407 4089
2408 fd_change (EV_A_ w->fd, 1); 4090 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2409 4091
2410 EV_FREQUENT_CHECK; 4092 EV_FREQUENT_CHECK;
2411} 4093}
2412 4094
2413void noinline 4095ecb_noinline
4096void
2414ev_timer_start (EV_P_ ev_timer *w) 4097ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
2415{ 4098{
2416 if (expect_false (ev_is_active (w))) 4099 if (ecb_expect_false (ev_is_active (w)))
2417 return; 4100 return;
2418 4101
2419 ev_at (w) += mn_now; 4102 ev_at (w) += mn_now;
2420 4103
2421 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 4104 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2422 4105
2423 EV_FREQUENT_CHECK; 4106 EV_FREQUENT_CHECK;
2424 4107
2425 ++timercnt; 4108 ++timercnt;
2426 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 4109 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
2427 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 4110 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
2428 ANHE_w (timers [ev_active (w)]) = (WT)w; 4111 ANHE_w (timers [ev_active (w)]) = (WT)w;
2429 ANHE_at_cache (timers [ev_active (w)]); 4112 ANHE_at_cache (timers [ev_active (w)]);
2430 upheap (timers, ev_active (w)); 4113 upheap (timers, ev_active (w));
2431 4114
2432 EV_FREQUENT_CHECK; 4115 EV_FREQUENT_CHECK;
2433 4116
2434 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 4117 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2435} 4118}
2436 4119
2437void noinline 4120ecb_noinline
4121void
2438ev_timer_stop (EV_P_ ev_timer *w) 4122ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
2439{ 4123{
2440 clear_pending (EV_A_ (W)w); 4124 clear_pending (EV_A_ (W)w);
2441 if (expect_false (!ev_is_active (w))) 4125 if (ecb_expect_false (!ev_is_active (w)))
2442 return; 4126 return;
2443 4127
2444 EV_FREQUENT_CHECK; 4128 EV_FREQUENT_CHECK;
2445 4129
2446 { 4130 {
… …
2448 4132
2449 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 4133 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2450 4134
2451 --timercnt; 4135 --timercnt;
2452 4136
2453 if (expect_true (active < timercnt + HEAP0)) 4137 if (ecb_expect_true (active < timercnt + HEAP0))
2454 { 4138 {
2455 timers [active] = timers [timercnt + HEAP0]; 4139 timers [active] = timers [timercnt + HEAP0];
2456 adjustheap (timers, timercnt, active); 4140 adjustheap (timers, timercnt, active);
2457 } 4141 }
2458 } 4142 }
2459 4143
2460 EV_FREQUENT_CHECK;
2461
2462 ev_at (w) -= mn_now; 4144 ev_at (w) -= mn_now;
2463 4145
2464 ev_stop (EV_A_ (W)w); 4146 ev_stop (EV_A_ (W)w);
2465}
2466 4147
2467void noinline 4148 EV_FREQUENT_CHECK;
4149}
4150
4151ecb_noinline
4152void
2468ev_timer_again (EV_P_ ev_timer *w) 4153ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
2469{ 4154{
2470 EV_FREQUENT_CHECK; 4155 EV_FREQUENT_CHECK;
4156
4157 clear_pending (EV_A_ (W)w);
2471 4158
2472 if (ev_is_active (w)) 4159 if (ev_is_active (w))
2473 { 4160 {
2474 if (w->repeat) 4161 if (w->repeat)
2475 { 4162 {
… …
2488 4175
2489 EV_FREQUENT_CHECK; 4176 EV_FREQUENT_CHECK;
2490} 4177}
2491 4178
2492ev_tstamp 4179ev_tstamp
2493ev_timer_remaining (EV_P_ ev_timer *w) 4180ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
2494{ 4181{
2495 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4182 return ev_at (w) - (ev_is_active (w) ? mn_now : EV_TS_CONST (0.));
2496} 4183}
2497 4184
2498#if EV_PERIODIC_ENABLE 4185#if EV_PERIODIC_ENABLE
2499void noinline 4186ecb_noinline
4187void
2500ev_periodic_start (EV_P_ ev_periodic *w) 4188ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
2501{ 4189{
2502 if (expect_false (ev_is_active (w))) 4190 if (ecb_expect_false (ev_is_active (w)))
2503 return; 4191 return;
2504 4192
2505 if (w->reschedule_cb) 4193 if (w->reschedule_cb)
2506 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4194 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2507 else if (w->interval) 4195 else if (w->interval)
2508 { 4196 {
2509 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 4197 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2510 /* this formula differs from the one in periodic_reify because we do not always round up */ 4198 periodic_recalc (EV_A_ w);
2511 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2512 } 4199 }
2513 else 4200 else
2514 ev_at (w) = w->offset; 4201 ev_at (w) = w->offset;
2515 4202
2516 EV_FREQUENT_CHECK; 4203 EV_FREQUENT_CHECK;
2517 4204
2518 ++periodiccnt; 4205 ++periodiccnt;
2519 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4206 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2520 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4207 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
2521 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4208 ANHE_w (periodics [ev_active (w)]) = (WT)w;
2522 ANHE_at_cache (periodics [ev_active (w)]); 4209 ANHE_at_cache (periodics [ev_active (w)]);
2523 upheap (periodics, ev_active (w)); 4210 upheap (periodics, ev_active (w));
2524 4211
2525 EV_FREQUENT_CHECK; 4212 EV_FREQUENT_CHECK;
2526 4213
2527 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4214 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2528} 4215}
2529 4216
2530void noinline 4217ecb_noinline
4218void
2531ev_periodic_stop (EV_P_ ev_periodic *w) 4219ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
2532{ 4220{
2533 clear_pending (EV_A_ (W)w); 4221 clear_pending (EV_A_ (W)w);
2534 if (expect_false (!ev_is_active (w))) 4222 if (ecb_expect_false (!ev_is_active (w)))
2535 return; 4223 return;
2536 4224
2537 EV_FREQUENT_CHECK; 4225 EV_FREQUENT_CHECK;
2538 4226
2539 { 4227 {
… …
2541 4229
2542 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 4230 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2543 4231
2544 --periodiccnt; 4232 --periodiccnt;
2545 4233
2546 if (expect_true (active < periodiccnt + HEAP0)) 4234 if (ecb_expect_true (active < periodiccnt + HEAP0))
2547 { 4235 {
2548 periodics [active] = periodics [periodiccnt + HEAP0]; 4236 periodics [active] = periodics [periodiccnt + HEAP0];
2549 adjustheap (periodics, periodiccnt, active); 4237 adjustheap (periodics, periodiccnt, active);
2550 } 4238 }
2551 } 4239 }
2552 4240
2553 EV_FREQUENT_CHECK;
2554
2555 ev_stop (EV_A_ (W)w); 4241 ev_stop (EV_A_ (W)w);
2556}
2557 4242
2558void noinline 4243 EV_FREQUENT_CHECK;
4244}
4245
4246ecb_noinline
4247void
2559ev_periodic_again (EV_P_ ev_periodic *w) 4248ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
2560{ 4249{
2561 /* TODO: use adjustheap and recalculation */ 4250 /* TODO: use adjustheap and recalculation */
2562 ev_periodic_stop (EV_A_ w); 4251 ev_periodic_stop (EV_A_ w);
2563 ev_periodic_start (EV_A_ w); 4252 ev_periodic_start (EV_A_ w);
2564} 4253}
… …
2566 4255
2567#ifndef SA_RESTART 4256#ifndef SA_RESTART
2568# define SA_RESTART 0 4257# define SA_RESTART 0
2569#endif 4258#endif
2570 4259
2571void noinline 4260#if EV_SIGNAL_ENABLE
4261
4262ecb_noinline
4263void
2572ev_signal_start (EV_P_ ev_signal *w) 4264ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
2573{ 4265{
4266 if (ecb_expect_false (ev_is_active (w)))
4267 return;
4268
4269 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
4270
2574#if EV_MULTIPLICITY 4271#if EV_MULTIPLICITY
2575 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4272 assert (("libev: a signal must not be attached to two different loops",
2576#endif 4273 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2577 if (expect_false (ev_is_active (w)))
2578 return;
2579 4274
2580 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0)); 4275 signals [w->signum - 1].loop = EV_A;
4276 ECB_MEMORY_FENCE_RELEASE;
4277#endif
2581 4278
2582 evpipe_init (EV_A);
2583
2584 EV_FREQUENT_CHECK; 4279 EV_FREQUENT_CHECK;
2585 4280
4281#if EV_USE_SIGNALFD
4282 if (sigfd == -2)
2586 { 4283 {
2587#ifndef _WIN32 4284 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2588 sigset_t full, prev; 4285 if (sigfd < 0 && errno == EINVAL)
2589 sigfillset (&full); 4286 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2590 sigprocmask (SIG_SETMASK, &full, &prev);
2591#endif
2592 4287
2593 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); 4288 if (sigfd >= 0)
4289 {
4290 fd_intern (sigfd); /* doing it twice will not hurt */
2594 4291
2595#ifndef _WIN32 4292 sigemptyset (&sigfd_set);
2596 sigprocmask (SIG_SETMASK, &prev, 0); 4293
2597#endif 4294 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
4295 ev_set_priority (&sigfd_w, EV_MAXPRI);
4296 ev_io_start (EV_A_ &sigfd_w);
4297 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
4298 }
2598 } 4299 }
4300
4301 if (sigfd >= 0)
4302 {
4303 /* TODO: check .head */
4304 sigaddset (&sigfd_set, w->signum);
4305 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
4306
4307 signalfd (sigfd, &sigfd_set, 0);
4308 }
4309#endif
2599 4310
2600 ev_start (EV_A_ (W)w, 1); 4311 ev_start (EV_A_ (W)w, 1);
2601 wlist_add (&signals [w->signum - 1].head, (WL)w); 4312 wlist_add (&signals [w->signum - 1].head, (WL)w);
2602 4313
2603 if (!((WL)w)->next) 4314 if (!((WL)w)->next)
4315# if EV_USE_SIGNALFD
4316 if (sigfd < 0) /*TODO*/
4317# endif
2604 { 4318 {
2605#if _WIN32 4319# ifdef _WIN32
4320 evpipe_init (EV_A);
4321
2606 signal (w->signum, ev_sighandler); 4322 signal (w->signum, ev_sighandler);
2607#else 4323# else
2608 struct sigaction sa = { }; 4324 struct sigaction sa;
4325
4326 evpipe_init (EV_A);
4327
2609 sa.sa_handler = ev_sighandler; 4328 sa.sa_handler = ev_sighandler;
2610 sigfillset (&sa.sa_mask); 4329 sigfillset (&sa.sa_mask);
2611 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 4330 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2612 sigaction (w->signum, &sa, 0); 4331 sigaction (w->signum, &sa, 0);
4332
4333 if (origflags & EVFLAG_NOSIGMASK)
4334 {
4335 sigemptyset (&sa.sa_mask);
4336 sigaddset (&sa.sa_mask, w->signum);
4337 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
4338 }
2613#endif 4339#endif
2614 } 4340 }
2615 4341
2616 EV_FREQUENT_CHECK; 4342 EV_FREQUENT_CHECK;
2617} 4343}
2618 4344
2619void noinline 4345ecb_noinline
4346void
2620ev_signal_stop (EV_P_ ev_signal *w) 4347ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
2621{ 4348{
2622 clear_pending (EV_A_ (W)w); 4349 clear_pending (EV_A_ (W)w);
2623 if (expect_false (!ev_is_active (w))) 4350 if (ecb_expect_false (!ev_is_active (w)))
2624 return; 4351 return;
2625 4352
2626 EV_FREQUENT_CHECK; 4353 EV_FREQUENT_CHECK;
2627 4354
2628 wlist_del (&signals [w->signum - 1].head, (WL)w); 4355 wlist_del (&signals [w->signum - 1].head, (WL)w);
2629 ev_stop (EV_A_ (W)w); 4356 ev_stop (EV_A_ (W)w);
2630 4357
2631 if (!signals [w->signum - 1].head) 4358 if (!signals [w->signum - 1].head)
4359 {
4360#if EV_MULTIPLICITY
4361 signals [w->signum - 1].loop = 0; /* unattach from signal */
4362#endif
4363#if EV_USE_SIGNALFD
4364 if (sigfd >= 0)
4365 {
4366 sigset_t ss;
4367
4368 sigemptyset (&ss);
4369 sigaddset (&ss, w->signum);
4370 sigdelset (&sigfd_set, w->signum);
4371
4372 signalfd (sigfd, &sigfd_set, 0);
4373 sigprocmask (SIG_UNBLOCK, &ss, 0);
4374 }
4375 else
4376#endif
2632 signal (w->signum, SIG_DFL); 4377 signal (w->signum, SIG_DFL);
4378 }
2633 4379
2634 EV_FREQUENT_CHECK; 4380 EV_FREQUENT_CHECK;
2635} 4381}
2636 4382
4383#endif
4384
4385#if EV_CHILD_ENABLE
4386
2637void 4387void
2638ev_child_start (EV_P_ ev_child *w) 4388ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
2639{ 4389{
2640#if EV_MULTIPLICITY 4390#if EV_MULTIPLICITY
2641 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4391 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2642#endif 4392#endif
2643 if (expect_false (ev_is_active (w))) 4393 if (ecb_expect_false (ev_is_active (w)))
2644 return; 4394 return;
2645 4395
2646 EV_FREQUENT_CHECK; 4396 EV_FREQUENT_CHECK;
2647 4397
2648 ev_start (EV_A_ (W)w, 1); 4398 ev_start (EV_A_ (W)w, 1);
2649 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4399 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2650 4400
2651 EV_FREQUENT_CHECK; 4401 EV_FREQUENT_CHECK;
2652} 4402}
2653 4403
2654void 4404void
2655ev_child_stop (EV_P_ ev_child *w) 4405ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
2656{ 4406{
2657 clear_pending (EV_A_ (W)w); 4407 clear_pending (EV_A_ (W)w);
2658 if (expect_false (!ev_is_active (w))) 4408 if (ecb_expect_false (!ev_is_active (w)))
2659 return; 4409 return;
2660 4410
2661 EV_FREQUENT_CHECK; 4411 EV_FREQUENT_CHECK;
2662 4412
2663 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4413 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2664 ev_stop (EV_A_ (W)w); 4414 ev_stop (EV_A_ (W)w);
2665 4415
2666 EV_FREQUENT_CHECK; 4416 EV_FREQUENT_CHECK;
2667} 4417}
4418
4419#endif
2668 4420
2669#if EV_STAT_ENABLE 4421#if EV_STAT_ENABLE
2670 4422
2671# ifdef _WIN32 4423# ifdef _WIN32
2672# undef lstat 4424# undef lstat
… …
2675 4427
2676#define DEF_STAT_INTERVAL 5.0074891 4428#define DEF_STAT_INTERVAL 5.0074891
2677#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4429#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2678#define MIN_STAT_INTERVAL 0.1074891 4430#define MIN_STAT_INTERVAL 0.1074891
2679 4431
2680static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4432ecb_noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2681 4433
2682#if EV_USE_INOTIFY 4434#if EV_USE_INOTIFY
2683# define EV_INOTIFY_BUFSIZE 8192
2684 4435
2685static void noinline 4436/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
4437# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
4438
4439ecb_noinline
4440static void
2686infy_add (EV_P_ ev_stat *w) 4441infy_add (EV_P_ ev_stat *w)
2687{ 4442{
2688 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); 4443 w->wd = inotify_add_watch (fs_fd, w->path,
4444 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4445 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4446 | IN_DONT_FOLLOW | IN_MASK_ADD);
2689 4447
2690 if (w->wd < 0) 4448 if (w->wd >= 0)
4449 {
4450 struct statfs sfs;
4451
4452 /* now local changes will be tracked by inotify, but remote changes won't */
4453 /* unless the filesystem is known to be local, we therefore still poll */
4454 /* also do poll on <2.6.25, but with normal frequency */
4455
4456 if (!fs_2625)
4457 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
4458 else if (!statfs (w->path, &sfs)
4459 && (sfs.f_type == 0x1373 /* devfs */
4460 || sfs.f_type == 0x4006 /* fat */
4461 || sfs.f_type == 0x4d44 /* msdos */
4462 || sfs.f_type == 0xEF53 /* ext2/3 */
4463 || sfs.f_type == 0x72b6 /* jffs2 */
4464 || sfs.f_type == 0x858458f6 /* ramfs */
4465 || sfs.f_type == 0x5346544e /* ntfs */
4466 || sfs.f_type == 0x3153464a /* jfs */
4467 || sfs.f_type == 0x9123683e /* btrfs */
4468 || sfs.f_type == 0x52654973 /* reiser3 */
4469 || sfs.f_type == 0x01021994 /* tmpfs */
4470 || sfs.f_type == 0x58465342 /* xfs */))
4471 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
4472 else
4473 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2691 { 4474 }
4475 else
4476 {
4477 /* can't use inotify, continue to stat */
2692 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4478 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2693 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2694 4479
2695 /* monitor some parent directory for speedup hints */ 4480 /* if path is not there, monitor some parent directory for speedup hints */
2696 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 4481 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2697 /* but an efficiency issue only */ 4482 /* but an efficiency issue only */
2698 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 4483 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2699 { 4484 {
2700 char path [4096]; 4485 char path [4096];
… …
2710 if (!pend || pend == path) 4495 if (!pend || pend == path)
2711 break; 4496 break;
2712 4497
2713 *pend = 0; 4498 *pend = 0;
2714 w->wd = inotify_add_watch (fs_fd, path, mask); 4499 w->wd = inotify_add_watch (fs_fd, path, mask);
2715 } 4500 }
2716 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 4501 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2717 } 4502 }
2718 } 4503 }
2719 4504
2720 if (w->wd >= 0) 4505 if (w->wd >= 0)
2721 {
2722 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4506 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2723 4507
2724 /* now local changes will be tracked by inotify, but remote changes won't */ 4508 /* now re-arm timer, if required */
2725 /* unless the filesystem it known to be local, we therefore still poll */ 4509 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2726 /* also do poll on <2.6.25, but with normal frequency */
2727 struct statfs sfs;
2728
2729 if (fs_2625 && !statfs (w->path, &sfs))
2730 if (sfs.f_type == 0x1373 /* devfs */
2731 || sfs.f_type == 0xEF53 /* ext2/3 */
2732 || sfs.f_type == 0x3153464a /* jfs */
2733 || sfs.f_type == 0x52654973 /* reiser3 */
2734 || sfs.f_type == 0x01021994 /* tempfs */
2735 || sfs.f_type == 0x58465342 /* xfs */)
2736 return;
2737
2738 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2739 ev_timer_again (EV_A_ &w->timer); 4510 ev_timer_again (EV_A_ &w->timer);
2740 } 4511 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2741} 4512}
2742 4513
2743static void noinline 4514ecb_noinline
4515static void
2744infy_del (EV_P_ ev_stat *w) 4516infy_del (EV_P_ ev_stat *w)
2745{ 4517{
2746 int slot; 4518 int slot;
2747 int wd = w->wd; 4519 int wd = w->wd;
2748 4520
2749 if (wd < 0) 4521 if (wd < 0)
2750 return; 4522 return;
2751 4523
2752 w->wd = -2; 4524 w->wd = -2;
2753 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 4525 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2754 wlist_del (&fs_hash [slot].head, (WL)w); 4526 wlist_del (&fs_hash [slot].head, (WL)w);
2755 4527
2756 /* remove this watcher, if others are watching it, they will rearm */ 4528 /* remove this watcher, if others are watching it, they will rearm */
2757 inotify_rm_watch (fs_fd, wd); 4529 inotify_rm_watch (fs_fd, wd);
2758} 4530}
2759 4531
2760static void noinline 4532ecb_noinline
4533static void
2761infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4534infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2762{ 4535{
2763 if (slot < 0) 4536 if (slot < 0)
2764 /* overflow, need to check for all hash slots */ 4537 /* overflow, need to check for all hash slots */
2765 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4538 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2766 infy_wd (EV_A_ slot, wd, ev); 4539 infy_wd (EV_A_ slot, wd, ev);
2767 else 4540 else
2768 { 4541 {
2769 WL w_; 4542 WL w_;
2770 4543
2771 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 4544 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2772 { 4545 {
2773 ev_stat *w = (ev_stat *)w_; 4546 ev_stat *w = (ev_stat *)w_;
2774 w_ = w_->next; /* lets us remove this watcher and all before it */ 4547 w_ = w_->next; /* lets us remove this watcher and all before it */
2775 4548
2776 if (w->wd == wd || wd == -1) 4549 if (w->wd == wd || wd == -1)
2777 { 4550 {
2778 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 4551 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2779 { 4552 {
2780 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4553 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2781 w->wd = -1; 4554 w->wd = -1;
2782 infy_add (EV_A_ w); /* re-add, no matter what */ 4555 infy_add (EV_A_ w); /* re-add, no matter what */
2783 } 4556 }
2784 4557
2785 stat_timer_cb (EV_A_ &w->timer, 0); 4558 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2790 4563
2791static void 4564static void
2792infy_cb (EV_P_ ev_io *w, int revents) 4565infy_cb (EV_P_ ev_io *w, int revents)
2793{ 4566{
2794 char buf [EV_INOTIFY_BUFSIZE]; 4567 char buf [EV_INOTIFY_BUFSIZE];
2795 struct inotify_event *ev = (struct inotify_event *)buf;
2796 int ofs; 4568 int ofs;
2797 int len = read (fs_fd, buf, sizeof (buf)); 4569 int len = read (fs_fd, buf, sizeof (buf));
2798 4570
2799 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 4571 for (ofs = 0; ofs < len; )
4572 {
4573 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2800 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4574 infy_wd (EV_A_ ev->wd, ev->wd, ev);
4575 ofs += sizeof (struct inotify_event) + ev->len;
4576 }
2801} 4577}
2802 4578
2803inline_size void 4579inline_size ecb_cold
4580void
2804check_2625 (EV_P) 4581ev_check_2625 (EV_P)
2805{ 4582{
2806 /* kernels < 2.6.25 are borked 4583 /* kernels < 2.6.25 are borked
2807 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4584 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2808 */ 4585 */
2809 struct utsname buf; 4586 if (ev_linux_version () < 0x020619)
2810 int major, minor, micro;
2811
2812 if (uname (&buf))
2813 return; 4587 return;
2814 4588
2815 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2816 return;
2817
2818 if (major < 2
2819 || (major == 2 && minor < 6)
2820 || (major == 2 && minor == 6 && micro < 25))
2821 return;
2822
2823 fs_2625 = 1; 4589 fs_2625 = 1;
4590}
4591
4592inline_size int
4593infy_newfd (void)
4594{
4595#if defined IN_CLOEXEC && defined IN_NONBLOCK
4596 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
4597 if (fd >= 0)
4598 return fd;
4599#endif
4600 return inotify_init ();
2824} 4601}
2825 4602
2826inline_size void 4603inline_size void
2827infy_init (EV_P) 4604infy_init (EV_P)
2828{ 4605{
2829 if (fs_fd != -2) 4606 if (fs_fd != -2)
2830 return; 4607 return;
2831 4608
2832 fs_fd = -1; 4609 fs_fd = -1;
2833 4610
2834 check_2625 (EV_A); 4611 ev_check_2625 (EV_A);
2835 4612
2836 fs_fd = inotify_init (); 4613 fs_fd = infy_newfd ();
2837 4614
2838 if (fs_fd >= 0) 4615 if (fs_fd >= 0)
2839 { 4616 {
4617 fd_intern (fs_fd);
2840 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 4618 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2841 ev_set_priority (&fs_w, EV_MAXPRI); 4619 ev_set_priority (&fs_w, EV_MAXPRI);
2842 ev_io_start (EV_A_ &fs_w); 4620 ev_io_start (EV_A_ &fs_w);
4621 ev_unref (EV_A);
2843 } 4622 }
2844} 4623}
2845 4624
2846inline_size void 4625inline_size void
2847infy_fork (EV_P) 4626infy_fork (EV_P)
… …
2849 int slot; 4628 int slot;
2850 4629
2851 if (fs_fd < 0) 4630 if (fs_fd < 0)
2852 return; 4631 return;
2853 4632
4633 ev_ref (EV_A);
4634 ev_io_stop (EV_A_ &fs_w);
2854 close (fs_fd); 4635 close (fs_fd);
2855 fs_fd = inotify_init (); 4636 fs_fd = infy_newfd ();
2856 4637
4638 if (fs_fd >= 0)
4639 {
4640 fd_intern (fs_fd);
4641 ev_io_set (&fs_w, fs_fd, EV_READ);
4642 ev_io_start (EV_A_ &fs_w);
4643 ev_unref (EV_A);
4644 }
4645
2857 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4646 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2858 { 4647 {
2859 WL w_ = fs_hash [slot].head; 4648 WL w_ = fs_hash [slot].head;
2860 fs_hash [slot].head = 0; 4649 fs_hash [slot].head = 0;
2861 4650
2862 while (w_) 4651 while (w_)
… …
2867 w->wd = -1; 4656 w->wd = -1;
2868 4657
2869 if (fs_fd >= 0) 4658 if (fs_fd >= 0)
2870 infy_add (EV_A_ w); /* re-add, no matter what */ 4659 infy_add (EV_A_ w); /* re-add, no matter what */
2871 else 4660 else
4661 {
4662 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
4663 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2872 ev_timer_again (EV_A_ &w->timer); 4664 ev_timer_again (EV_A_ &w->timer);
4665 if (ev_is_active (&w->timer)) ev_unref (EV_A);
4666 }
2873 } 4667 }
2874 } 4668 }
2875} 4669}
2876 4670
2877#endif 4671#endif
… …
2881#else 4675#else
2882# define EV_LSTAT(p,b) lstat (p, b) 4676# define EV_LSTAT(p,b) lstat (p, b)
2883#endif 4677#endif
2884 4678
2885void 4679void
2886ev_stat_stat (EV_P_ ev_stat *w) 4680ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
2887{ 4681{
2888 if (lstat (w->path, &w->attr) < 0) 4682 if (lstat (w->path, &w->attr) < 0)
2889 w->attr.st_nlink = 0; 4683 w->attr.st_nlink = 0;
2890 else if (!w->attr.st_nlink) 4684 else if (!w->attr.st_nlink)
2891 w->attr.st_nlink = 1; 4685 w->attr.st_nlink = 1;
2892} 4686}
2893 4687
2894static void noinline 4688ecb_noinline
4689static void
2895stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4690stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2896{ 4691{
2897 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4692 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2898 4693
2899 /* we copy this here each the time so that */ 4694 ev_statdata prev = w->attr;
2900 /* prev has the old value when the callback gets invoked */
2901 w->prev = w->attr;
2902 ev_stat_stat (EV_A_ w); 4695 ev_stat_stat (EV_A_ w);
2903 4696
2904 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 4697 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2905 if ( 4698 if (
2906 w->prev.st_dev != w->attr.st_dev 4699 prev.st_dev != w->attr.st_dev
2907 || w->prev.st_ino != w->attr.st_ino 4700 || prev.st_ino != w->attr.st_ino
2908 || w->prev.st_mode != w->attr.st_mode 4701 || prev.st_mode != w->attr.st_mode
2909 || w->prev.st_nlink != w->attr.st_nlink 4702 || prev.st_nlink != w->attr.st_nlink
2910 || w->prev.st_uid != w->attr.st_uid 4703 || prev.st_uid != w->attr.st_uid
2911 || w->prev.st_gid != w->attr.st_gid 4704 || prev.st_gid != w->attr.st_gid
2912 || w->prev.st_rdev != w->attr.st_rdev 4705 || prev.st_rdev != w->attr.st_rdev
2913 || w->prev.st_size != w->attr.st_size 4706 || prev.st_size != w->attr.st_size
2914 || w->prev.st_atime != w->attr.st_atime 4707 || prev.st_atime != w->attr.st_atime
2915 || w->prev.st_mtime != w->attr.st_mtime 4708 || prev.st_mtime != w->attr.st_mtime
2916 || w->prev.st_ctime != w->attr.st_ctime 4709 || prev.st_ctime != w->attr.st_ctime
2917 ) { 4710 ) {
4711 /* we only update w->prev on actual differences */
4712 /* in case we test more often than invoke the callback, */
4713 /* to ensure that prev is always different to attr */
4714 w->prev = prev;
4715
2918 #if EV_USE_INOTIFY 4716 #if EV_USE_INOTIFY
2919 if (fs_fd >= 0) 4717 if (fs_fd >= 0)
2920 { 4718 {
2921 infy_del (EV_A_ w); 4719 infy_del (EV_A_ w);
2922 infy_add (EV_A_ w); 4720 infy_add (EV_A_ w);
… …
2927 ev_feed_event (EV_A_ w, EV_STAT); 4725 ev_feed_event (EV_A_ w, EV_STAT);
2928 } 4726 }
2929} 4727}
2930 4728
2931void 4729void
2932ev_stat_start (EV_P_ ev_stat *w) 4730ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
2933{ 4731{
2934 if (expect_false (ev_is_active (w))) 4732 if (ecb_expect_false (ev_is_active (w)))
2935 return; 4733 return;
2936 4734
2937 ev_stat_stat (EV_A_ w); 4735 ev_stat_stat (EV_A_ w);
2938 4736
2939 if (w->interval < MIN_STAT_INTERVAL && w->interval) 4737 if (w->interval < MIN_STAT_INTERVAL && w->interval)
… …
2947 4745
2948 if (fs_fd >= 0) 4746 if (fs_fd >= 0)
2949 infy_add (EV_A_ w); 4747 infy_add (EV_A_ w);
2950 else 4748 else
2951#endif 4749#endif
4750 {
2952 ev_timer_again (EV_A_ &w->timer); 4751 ev_timer_again (EV_A_ &w->timer);
4752 ev_unref (EV_A);
4753 }
2953 4754
2954 ev_start (EV_A_ (W)w, 1); 4755 ev_start (EV_A_ (W)w, 1);
2955 4756
2956 EV_FREQUENT_CHECK; 4757 EV_FREQUENT_CHECK;
2957} 4758}
2958 4759
2959void 4760void
2960ev_stat_stop (EV_P_ ev_stat *w) 4761ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
2961{ 4762{
2962 clear_pending (EV_A_ (W)w); 4763 clear_pending (EV_A_ (W)w);
2963 if (expect_false (!ev_is_active (w))) 4764 if (ecb_expect_false (!ev_is_active (w)))
2964 return; 4765 return;
2965 4766
2966 EV_FREQUENT_CHECK; 4767 EV_FREQUENT_CHECK;
2967 4768
2968#if EV_USE_INOTIFY 4769#if EV_USE_INOTIFY
2969 infy_del (EV_A_ w); 4770 infy_del (EV_A_ w);
2970#endif 4771#endif
4772
4773 if (ev_is_active (&w->timer))
4774 {
4775 ev_ref (EV_A);
2971 ev_timer_stop (EV_A_ &w->timer); 4776 ev_timer_stop (EV_A_ &w->timer);
4777 }
2972 4778
2973 ev_stop (EV_A_ (W)w); 4779 ev_stop (EV_A_ (W)w);
2974 4780
2975 EV_FREQUENT_CHECK; 4781 EV_FREQUENT_CHECK;
2976} 4782}
2977#endif 4783#endif
2978 4784
2979#if EV_IDLE_ENABLE 4785#if EV_IDLE_ENABLE
2980void 4786void
2981ev_idle_start (EV_P_ ev_idle *w) 4787ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
2982{ 4788{
2983 if (expect_false (ev_is_active (w))) 4789 if (ecb_expect_false (ev_is_active (w)))
2984 return; 4790 return;
2985 4791
2986 pri_adjust (EV_A_ (W)w); 4792 pri_adjust (EV_A_ (W)w);
2987 4793
2988 EV_FREQUENT_CHECK; 4794 EV_FREQUENT_CHECK;
… …
2991 int active = ++idlecnt [ABSPRI (w)]; 4797 int active = ++idlecnt [ABSPRI (w)];
2992 4798
2993 ++idleall; 4799 ++idleall;
2994 ev_start (EV_A_ (W)w, active); 4800 ev_start (EV_A_ (W)w, active);
2995 4801
2996 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 4802 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
2997 idles [ABSPRI (w)][active - 1] = w; 4803 idles [ABSPRI (w)][active - 1] = w;
2998 } 4804 }
2999 4805
3000 EV_FREQUENT_CHECK; 4806 EV_FREQUENT_CHECK;
3001} 4807}
3002 4808
3003void 4809void
3004ev_idle_stop (EV_P_ ev_idle *w) 4810ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
3005{ 4811{
3006 clear_pending (EV_A_ (W)w); 4812 clear_pending (EV_A_ (W)w);
3007 if (expect_false (!ev_is_active (w))) 4813 if (ecb_expect_false (!ev_is_active (w)))
3008 return; 4814 return;
3009 4815
3010 EV_FREQUENT_CHECK; 4816 EV_FREQUENT_CHECK;
3011 4817
3012 { 4818 {
… …
3021 4827
3022 EV_FREQUENT_CHECK; 4828 EV_FREQUENT_CHECK;
3023} 4829}
3024#endif 4830#endif
3025 4831
4832#if EV_PREPARE_ENABLE
3026void 4833void
3027ev_prepare_start (EV_P_ ev_prepare *w) 4834ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
3028{ 4835{
3029 if (expect_false (ev_is_active (w))) 4836 if (ecb_expect_false (ev_is_active (w)))
3030 return; 4837 return;
3031 4838
3032 EV_FREQUENT_CHECK; 4839 EV_FREQUENT_CHECK;
3033 4840
3034 ev_start (EV_A_ (W)w, ++preparecnt); 4841 ev_start (EV_A_ (W)w, ++preparecnt);
3035 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4842 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
3036 prepares [preparecnt - 1] = w; 4843 prepares [preparecnt - 1] = w;
3037 4844
3038 EV_FREQUENT_CHECK; 4845 EV_FREQUENT_CHECK;
3039} 4846}
3040 4847
3041void 4848void
3042ev_prepare_stop (EV_P_ ev_prepare *w) 4849ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
3043{ 4850{
3044 clear_pending (EV_A_ (W)w); 4851 clear_pending (EV_A_ (W)w);
3045 if (expect_false (!ev_is_active (w))) 4852 if (ecb_expect_false (!ev_is_active (w)))
3046 return; 4853 return;
3047 4854
3048 EV_FREQUENT_CHECK; 4855 EV_FREQUENT_CHECK;
3049 4856
3050 { 4857 {
… …
3056 4863
3057 ev_stop (EV_A_ (W)w); 4864 ev_stop (EV_A_ (W)w);
3058 4865
3059 EV_FREQUENT_CHECK; 4866 EV_FREQUENT_CHECK;
3060} 4867}
4868#endif
3061 4869
4870#if EV_CHECK_ENABLE
3062void 4871void
3063ev_check_start (EV_P_ ev_check *w) 4872ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
3064{ 4873{
3065 if (expect_false (ev_is_active (w))) 4874 if (ecb_expect_false (ev_is_active (w)))
3066 return; 4875 return;
3067 4876
3068 EV_FREQUENT_CHECK; 4877 EV_FREQUENT_CHECK;
3069 4878
3070 ev_start (EV_A_ (W)w, ++checkcnt); 4879 ev_start (EV_A_ (W)w, ++checkcnt);
3071 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 4880 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
3072 checks [checkcnt - 1] = w; 4881 checks [checkcnt - 1] = w;
3073 4882
3074 EV_FREQUENT_CHECK; 4883 EV_FREQUENT_CHECK;
3075} 4884}
3076 4885
3077void 4886void
3078ev_check_stop (EV_P_ ev_check *w) 4887ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
3079{ 4888{
3080 clear_pending (EV_A_ (W)w); 4889 clear_pending (EV_A_ (W)w);
3081 if (expect_false (!ev_is_active (w))) 4890 if (ecb_expect_false (!ev_is_active (w)))
3082 return; 4891 return;
3083 4892
3084 EV_FREQUENT_CHECK; 4893 EV_FREQUENT_CHECK;
3085 4894
3086 { 4895 {
… …
3092 4901
3093 ev_stop (EV_A_ (W)w); 4902 ev_stop (EV_A_ (W)w);
3094 4903
3095 EV_FREQUENT_CHECK; 4904 EV_FREQUENT_CHECK;
3096} 4905}
4906#endif
3097 4907
3098#if EV_EMBED_ENABLE 4908#if EV_EMBED_ENABLE
3099void noinline 4909ecb_noinline
4910void
3100ev_embed_sweep (EV_P_ ev_embed *w) 4911ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
3101{ 4912{
3102 ev_loop (w->other, EVLOOP_NONBLOCK); 4913 ev_run (w->other, EVRUN_NOWAIT);
3103} 4914}
3104 4915
3105static void 4916static void
3106embed_io_cb (EV_P_ ev_io *io, int revents) 4917embed_io_cb (EV_P_ ev_io *io, int revents)
3107{ 4918{
3108 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4919 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3109 4920
3110 if (ev_cb (w)) 4921 if (ev_cb (w))
3111 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4922 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3112 else 4923 else
3113 ev_loop (w->other, EVLOOP_NONBLOCK); 4924 ev_run (w->other, EVRUN_NOWAIT);
3114} 4925}
3115 4926
3116static void 4927static void
3117embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4928embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3118{ 4929{
3119 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 4930 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
3120 4931
3121 { 4932 {
3122 struct ev_loop *loop = w->other; 4933 EV_P = w->other;
3123 4934
3124 while (fdchangecnt) 4935 while (fdchangecnt)
3125 { 4936 {
3126 fd_reify (EV_A); 4937 fd_reify (EV_A);
3127 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4938 ev_run (EV_A_ EVRUN_NOWAIT);
3128 } 4939 }
3129 } 4940 }
3130} 4941}
3131 4942
3132static void 4943static void
… …
3135 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 4946 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3136 4947
3137 ev_embed_stop (EV_A_ w); 4948 ev_embed_stop (EV_A_ w);
3138 4949
3139 { 4950 {
3140 struct ev_loop *loop = w->other; 4951 EV_P = w->other;
3141 4952
3142 ev_loop_fork (EV_A); 4953 ev_loop_fork (EV_A);
3143 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4954 ev_run (EV_A_ EVRUN_NOWAIT);
3144 } 4955 }
3145 4956
3146 ev_embed_start (EV_A_ w); 4957 ev_embed_start (EV_A_ w);
3147} 4958}
3148 4959
… …
3153 ev_idle_stop (EV_A_ idle); 4964 ev_idle_stop (EV_A_ idle);
3154} 4965}
3155#endif 4966#endif
3156 4967
3157void 4968void
3158ev_embed_start (EV_P_ ev_embed *w) 4969ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
3159{ 4970{
3160 if (expect_false (ev_is_active (w))) 4971 if (ecb_expect_false (ev_is_active (w)))
3161 return; 4972 return;
3162 4973
3163 { 4974 {
3164 struct ev_loop *loop = w->other; 4975 EV_P = w->other;
3165 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4976 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
3166 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 4977 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3167 } 4978 }
3168 4979
3169 EV_FREQUENT_CHECK; 4980 EV_FREQUENT_CHECK;
… …
3184 4995
3185 EV_FREQUENT_CHECK; 4996 EV_FREQUENT_CHECK;
3186} 4997}
3187 4998
3188void 4999void
3189ev_embed_stop (EV_P_ ev_embed *w) 5000ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
3190{ 5001{
3191 clear_pending (EV_A_ (W)w); 5002 clear_pending (EV_A_ (W)w);
3192 if (expect_false (!ev_is_active (w))) 5003 if (ecb_expect_false (!ev_is_active (w)))
3193 return; 5004 return;
3194 5005
3195 EV_FREQUENT_CHECK; 5006 EV_FREQUENT_CHECK;
3196 5007
3197 ev_io_stop (EV_A_ &w->io); 5008 ev_io_stop (EV_A_ &w->io);
3198 ev_prepare_stop (EV_A_ &w->prepare); 5009 ev_prepare_stop (EV_A_ &w->prepare);
3199 ev_fork_stop (EV_A_ &w->fork); 5010 ev_fork_stop (EV_A_ &w->fork);
3200 5011
5012 ev_stop (EV_A_ (W)w);
5013
3201 EV_FREQUENT_CHECK; 5014 EV_FREQUENT_CHECK;
3202} 5015}
3203#endif 5016#endif
3204 5017
3205#if EV_FORK_ENABLE 5018#if EV_FORK_ENABLE
3206void 5019void
3207ev_fork_start (EV_P_ ev_fork *w) 5020ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
3208{ 5021{
3209 if (expect_false (ev_is_active (w))) 5022 if (ecb_expect_false (ev_is_active (w)))
3210 return; 5023 return;
3211 5024
3212 EV_FREQUENT_CHECK; 5025 EV_FREQUENT_CHECK;
3213 5026
3214 ev_start (EV_A_ (W)w, ++forkcnt); 5027 ev_start (EV_A_ (W)w, ++forkcnt);
3215 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 5028 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
3216 forks [forkcnt - 1] = w; 5029 forks [forkcnt - 1] = w;
3217 5030
3218 EV_FREQUENT_CHECK; 5031 EV_FREQUENT_CHECK;
3219} 5032}
3220 5033
3221void 5034void
3222ev_fork_stop (EV_P_ ev_fork *w) 5035ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
3223{ 5036{
3224 clear_pending (EV_A_ (W)w); 5037 clear_pending (EV_A_ (W)w);
3225 if (expect_false (!ev_is_active (w))) 5038 if (ecb_expect_false (!ev_is_active (w)))
3226 return; 5039 return;
3227 5040
3228 EV_FREQUENT_CHECK; 5041 EV_FREQUENT_CHECK;
3229 5042
3230 { 5043 {
… …
3238 5051
3239 EV_FREQUENT_CHECK; 5052 EV_FREQUENT_CHECK;
3240} 5053}
3241#endif 5054#endif
3242 5055
5056#if EV_CLEANUP_ENABLE
5057void
5058ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
5059{
5060 if (ecb_expect_false (ev_is_active (w)))
5061 return;
5062
5063 EV_FREQUENT_CHECK;
5064
5065 ev_start (EV_A_ (W)w, ++cleanupcnt);
5066 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
5067 cleanups [cleanupcnt - 1] = w;
5068
5069 /* cleanup watchers should never keep a refcount on the loop */
5070 ev_unref (EV_A);
5071 EV_FREQUENT_CHECK;
5072}
5073
5074void
5075ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
5076{
5077 clear_pending (EV_A_ (W)w);
5078 if (ecb_expect_false (!ev_is_active (w)))
5079 return;
5080
5081 EV_FREQUENT_CHECK;
5082 ev_ref (EV_A);
5083
5084 {
5085 int active = ev_active (w);
5086
5087 cleanups [active - 1] = cleanups [--cleanupcnt];
5088 ev_active (cleanups [active - 1]) = active;
5089 }
5090
5091 ev_stop (EV_A_ (W)w);
5092
5093 EV_FREQUENT_CHECK;
5094}
5095#endif
5096
3243#if EV_ASYNC_ENABLE 5097#if EV_ASYNC_ENABLE
3244void 5098void
3245ev_async_start (EV_P_ ev_async *w) 5099ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
3246{ 5100{
3247 if (expect_false (ev_is_active (w))) 5101 if (ecb_expect_false (ev_is_active (w)))
3248 return; 5102 return;
3249 5103
5104 w->sent = 0;
5105
3250 evpipe_init (EV_A); 5106 evpipe_init (EV_A);
3251 5107
3252 EV_FREQUENT_CHECK; 5108 EV_FREQUENT_CHECK;
3253 5109
3254 ev_start (EV_A_ (W)w, ++asynccnt); 5110 ev_start (EV_A_ (W)w, ++asynccnt);
3255 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 5111 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
3256 asyncs [asynccnt - 1] = w; 5112 asyncs [asynccnt - 1] = w;
3257 5113
3258 EV_FREQUENT_CHECK; 5114 EV_FREQUENT_CHECK;
3259} 5115}
3260 5116
3261void 5117void
3262ev_async_stop (EV_P_ ev_async *w) 5118ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
3263{ 5119{
3264 clear_pending (EV_A_ (W)w); 5120 clear_pending (EV_A_ (W)w);
3265 if (expect_false (!ev_is_active (w))) 5121 if (ecb_expect_false (!ev_is_active (w)))
3266 return; 5122 return;
3267 5123
3268 EV_FREQUENT_CHECK; 5124 EV_FREQUENT_CHECK;
3269 5125
3270 { 5126 {
… …
3278 5134
3279 EV_FREQUENT_CHECK; 5135 EV_FREQUENT_CHECK;
3280} 5136}
3281 5137
3282void 5138void
3283ev_async_send (EV_P_ ev_async *w) 5139ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
3284{ 5140{
3285 w->sent = 1; 5141 w->sent = 1;
3286 evpipe_write (EV_A_ &gotasync); 5142 evpipe_write (EV_A_ &async_pending);
3287} 5143}
3288#endif 5144#endif
3289 5145
3290/*****************************************************************************/ 5146/*****************************************************************************/
3291 5147
… …
3325 5181
3326 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5182 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3327} 5183}
3328 5184
3329void 5185void
3330ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 5186ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
3331{ 5187{
3332 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5188 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3333
3334 if (expect_false (!once))
3335 {
3336 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
3337 return;
3338 }
3339 5189
3340 once->cb = cb; 5190 once->cb = cb;
3341 once->arg = arg; 5191 once->arg = arg;
3342 5192
3343 ev_init (&once->io, once_cb_io); 5193 ev_init (&once->io, once_cb_io);
… …
3356} 5206}
3357 5207
3358/*****************************************************************************/ 5208/*****************************************************************************/
3359 5209
3360#if EV_WALK_ENABLE 5210#if EV_WALK_ENABLE
5211ecb_cold
3361void 5212void
3362ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 5213ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
3363{ 5214{
3364 int i, j; 5215 int i, j;
3365 ev_watcher_list *wl, *wn; 5216 ev_watcher_list *wl, *wn;
3366 5217
3367 if (types & (EV_IO | EV_EMBED)) 5218 if (types & (EV_IO | EV_EMBED))
… …
3410 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 5261 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3411#endif 5262#endif
3412 5263
3413#if EV_IDLE_ENABLE 5264#if EV_IDLE_ENABLE
3414 if (types & EV_IDLE) 5265 if (types & EV_IDLE)
3415 for (j = NUMPRI; i--; ) 5266 for (j = NUMPRI; j--; )
3416 for (i = idlecnt [j]; i--; ) 5267 for (i = idlecnt [j]; i--; )
3417 cb (EV_A_ EV_IDLE, idles [j][i]); 5268 cb (EV_A_ EV_IDLE, idles [j][i]);
3418#endif 5269#endif
3419 5270
3420#if EV_FORK_ENABLE 5271#if EV_FORK_ENABLE
… …
3428 if (types & EV_ASYNC) 5279 if (types & EV_ASYNC)
3429 for (i = asynccnt; i--; ) 5280 for (i = asynccnt; i--; )
3430 cb (EV_A_ EV_ASYNC, asyncs [i]); 5281 cb (EV_A_ EV_ASYNC, asyncs [i]);
3431#endif 5282#endif
3432 5283
5284#if EV_PREPARE_ENABLE
3433 if (types & EV_PREPARE) 5285 if (types & EV_PREPARE)
3434 for (i = preparecnt; i--; ) 5286 for (i = preparecnt; i--; )
3435#if EV_EMBED_ENABLE 5287# if EV_EMBED_ENABLE
3436 if (ev_cb (prepares [i]) != embed_prepare_cb) 5288 if (ev_cb (prepares [i]) != embed_prepare_cb)
3437#endif 5289# endif
3438 cb (EV_A_ EV_PREPARE, prepares [i]); 5290 cb (EV_A_ EV_PREPARE, prepares [i]);
5291#endif
3439 5292
5293#if EV_CHECK_ENABLE
3440 if (types & EV_CHECK) 5294 if (types & EV_CHECK)
3441 for (i = checkcnt; i--; ) 5295 for (i = checkcnt; i--; )
3442 cb (EV_A_ EV_CHECK, checks [i]); 5296 cb (EV_A_ EV_CHECK, checks [i]);
5297#endif
3443 5298
5299#if EV_SIGNAL_ENABLE
3444 if (types & EV_SIGNAL) 5300 if (types & EV_SIGNAL)
3445 for (i = 0; i < signalmax; ++i) 5301 for (i = 0; i < EV_NSIG - 1; ++i)
3446 for (wl = signals [i].head; wl; ) 5302 for (wl = signals [i].head; wl; )
3447 { 5303 {
3448 wn = wl->next; 5304 wn = wl->next;
3449 cb (EV_A_ EV_SIGNAL, wl); 5305 cb (EV_A_ EV_SIGNAL, wl);
3450 wl = wn; 5306 wl = wn;
3451 } 5307 }
5308#endif
3452 5309
5310#if EV_CHILD_ENABLE
3453 if (types & EV_CHILD) 5311 if (types & EV_CHILD)
3454 for (i = EV_PID_HASHSIZE; i--; ) 5312 for (i = (EV_PID_HASHSIZE); i--; )
3455 for (wl = childs [i]; wl; ) 5313 for (wl = childs [i]; wl; )
3456 { 5314 {
3457 wn = wl->next; 5315 wn = wl->next;
3458 cb (EV_A_ EV_CHILD, wl); 5316 cb (EV_A_ EV_CHILD, wl);
3459 wl = wn; 5317 wl = wn;
3460 } 5318 }
5319#endif
3461/* EV_STAT 0x00001000 /* stat data changed */ 5320/* EV_STAT 0x00001000 /* stat data changed */
3462/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 5321/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3463} 5322}
3464#endif 5323#endif
3465 5324
3466#if EV_MULTIPLICITY 5325#if EV_MULTIPLICITY
3467 #include "ev_wrap.h" 5326 #include "ev_wrap.h"
3468#endif 5327#endif
3469 5328
3470#ifdef __cplusplus
3471}
3472#endif
3473

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