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Comparing libev/ev.c (file contents):
Revision 1.285 by root, Wed Apr 15 19:35:53 2009 UTC vs.
Revision 1.504 by root, Sun Jul 7 06:00:32 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
64# elif !defined EV_USE_CLOCK_SYSCALL
65# define EV_USE_CLOCK_SYSCALL 0
62# endif 66# endif
63 67
64# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
65# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
66# define EV_USE_MONOTONIC 1 70# define EV_USE_MONOTONIC 1
… …
75# ifndef EV_USE_REALTIME 79# ifndef EV_USE_REALTIME
76# define EV_USE_REALTIME 0 80# define EV_USE_REALTIME 0
77# endif 81# endif
78# endif 82# endif
79 83
84# if HAVE_NANOSLEEP
80# ifndef EV_USE_NANOSLEEP 85# ifndef EV_USE_NANOSLEEP
81# if HAVE_NANOSLEEP
82# define EV_USE_NANOSLEEP 1 86# define EV_USE_NANOSLEEP EV_FEATURE_OS
87# endif
83# else 88# else
89# undef EV_USE_NANOSLEEP
84# 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
85# endif 96# endif
97# else
98# undef EV_USE_SELECT
99# define EV_USE_SELECT 0
86# endif 100# endif
87 101
102# if HAVE_POLL && HAVE_POLL_H
88# ifndef EV_USE_SELECT 103# ifndef EV_USE_POLL
89# if HAVE_SELECT && HAVE_SYS_SELECT_H 104# define EV_USE_POLL EV_FEATURE_BACKENDS
90# define EV_USE_SELECT 1
91# else
92# define EV_USE_SELECT 0
93# endif 105# endif
94# endif
95
96# ifndef EV_USE_POLL
97# if HAVE_POLL && HAVE_POLL_H
98# define EV_USE_POLL 1
99# else 106# else
107# undef EV_USE_POLL
100# define EV_USE_POLL 0 108# define EV_USE_POLL 0
101# endif
102# endif 109# endif
103 110
104# ifndef EV_USE_EPOLL
105# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 111# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
106# define EV_USE_EPOLL 1 112# ifndef EV_USE_EPOLL
107# else 113# define EV_USE_EPOLL EV_FEATURE_BACKENDS
108# define EV_USE_EPOLL 0
109# endif 114# endif
115# else
116# undef EV_USE_EPOLL
117# define EV_USE_EPOLL 0
110# endif 118# endif
111 119
112# ifndef EV_USE_KQUEUE 120# if HAVE_LINUX_AIO_ABI_H
113# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 121# ifndef EV_USE_LINUXAIO
114# define EV_USE_KQUEUE 1 122# define EV_USE_LINUXAIO EV_FEATURE_BACKENDS
115# else
116# define EV_USE_KQUEUE 0
117# endif 123# endif
124# else
125# undef EV_USE_LINUXAIO
126# define EV_USE_LINUXAIO 0
118# endif 127# endif
119 128
120# ifndef EV_USE_PORT 129# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
121# if HAVE_PORT_H && HAVE_PORT_CREATE 130# ifndef EV_USE_KQUEUE
122# define EV_USE_PORT 1 131# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
123# else
124# define EV_USE_PORT 0
125# endif 132# endif
133# else
134# undef EV_USE_KQUEUE
135# define EV_USE_KQUEUE 0
126# endif 136# endif
127 137
138# if HAVE_PORT_H && HAVE_PORT_CREATE
128# ifndef EV_USE_INOTIFY 139# ifndef EV_USE_PORT
129# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 140# define EV_USE_PORT EV_FEATURE_BACKENDS
130# define EV_USE_INOTIFY 1
131# else
132# define EV_USE_INOTIFY 0
133# endif 141# endif
142# else
143# undef EV_USE_PORT
144# define EV_USE_PORT 0
134# endif 145# endif
135 146
147# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
136# ifndef EV_USE_EVENTFD 148# ifndef EV_USE_INOTIFY
137# if HAVE_EVENTFD 149# define EV_USE_INOTIFY EV_FEATURE_OS
138# define EV_USE_EVENTFD 1
139# else
140# define EV_USE_EVENTFD 0
141# 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
142# endif 172# endif
143 173
144#endif 174#endif
145 175
146#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
147#include <stdlib.h> 186#include <stdlib.h>
187#include <string.h>
148#include <fcntl.h> 188#include <fcntl.h>
149#include <stddef.h> 189#include <stddef.h>
150 190
151#include <stdio.h> 191#include <stdio.h>
152 192
153#include <assert.h> 193#include <assert.h>
154#include <errno.h> 194#include <errno.h>
155#include <sys/types.h> 195#include <sys/types.h>
156#include <time.h> 196#include <time.h>
197#include <limits.h>
157 198
158#include <signal.h> 199#include <signal.h>
159 200
160#ifdef EV_H 201#ifdef EV_H
161# include EV_H 202# include EV_H
162#else 203#else
163# 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
164#endif 216#endif
165 217
166#ifndef _WIN32 218#ifndef _WIN32
167# include <sys/time.h> 219# include <sys/time.h>
168# include <sys/wait.h> 220# include <sys/wait.h>
169# include <unistd.h> 221# include <unistd.h>
170#else 222#else
171# include <io.h> 223# include <io.h>
172# define WIN32_LEAN_AND_MEAN 224# define WIN32_LEAN_AND_MEAN
225# include <winsock2.h>
173# include <windows.h> 226# include <windows.h>
174# ifndef EV_SELECT_IS_WINSOCKET 227# ifndef EV_SELECT_IS_WINSOCKET
175# define EV_SELECT_IS_WINSOCKET 1 228# define EV_SELECT_IS_WINSOCKET 1
176# endif 229# endif
230# undef EV_AVOID_STDIO
177#endif 231#endif
178 232
179/* 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 */
180 234
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
181#ifndef EV_USE_CLOCK_SYSCALL 264#ifndef EV_USE_CLOCK_SYSCALL
182# if __linux && __GLIBC__ >= 2 265# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
183# define EV_USE_CLOCK_SYSCALL 1 266# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
184# else 267# else
185# define EV_USE_CLOCK_SYSCALL 0 268# define EV_USE_CLOCK_SYSCALL 0
186# endif 269# endif
187#endif 270#endif
188 271
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
189#ifndef EV_USE_MONOTONIC 281#ifndef EV_USE_MONOTONIC
190# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 282# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
191# define EV_USE_MONOTONIC 1 283# define EV_USE_MONOTONIC EV_FEATURE_OS
192# else 284# else
193# define EV_USE_MONOTONIC 0 285# define EV_USE_MONOTONIC 0
194# endif 286# endif
195#endif 287#endif
196 288
… …
198# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 290# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
199#endif 291#endif
200 292
201#ifndef EV_USE_NANOSLEEP 293#ifndef EV_USE_NANOSLEEP
202# if _POSIX_C_SOURCE >= 199309L 294# if _POSIX_C_SOURCE >= 199309L
203# define EV_USE_NANOSLEEP 1 295# define EV_USE_NANOSLEEP EV_FEATURE_OS
204# else 296# else
205# define EV_USE_NANOSLEEP 0 297# define EV_USE_NANOSLEEP 0
206# endif 298# endif
207#endif 299#endif
208 300
209#ifndef EV_USE_SELECT 301#ifndef EV_USE_SELECT
210# define EV_USE_SELECT 1 302# define EV_USE_SELECT EV_FEATURE_BACKENDS
211#endif 303#endif
212 304
213#ifndef EV_USE_POLL 305#ifndef EV_USE_POLL
214# ifdef _WIN32 306# ifdef _WIN32
215# define EV_USE_POLL 0 307# define EV_USE_POLL 0
216# else 308# else
217# define EV_USE_POLL 1 309# define EV_USE_POLL EV_FEATURE_BACKENDS
218# endif 310# endif
219#endif 311#endif
220 312
221#ifndef EV_USE_EPOLL 313#ifndef EV_USE_EPOLL
222# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 314# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
223# define EV_USE_EPOLL 1 315# define EV_USE_EPOLL EV_FEATURE_BACKENDS
224# else 316# else
225# define EV_USE_EPOLL 0 317# define EV_USE_EPOLL 0
226# endif 318# endif
227#endif 319#endif
228 320
… …
232 324
233#ifndef EV_USE_PORT 325#ifndef EV_USE_PORT
234# define EV_USE_PORT 0 326# define EV_USE_PORT 0
235#endif 327#endif
236 328
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
237#ifndef EV_USE_INOTIFY 345#ifndef EV_USE_INOTIFY
238# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 346# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
239# define EV_USE_INOTIFY 1 347# define EV_USE_INOTIFY EV_FEATURE_OS
240# else 348# else
241# define EV_USE_INOTIFY 0 349# define EV_USE_INOTIFY 0
242# endif 350# endif
243#endif 351#endif
244 352
245#ifndef EV_PID_HASHSIZE 353#ifndef EV_PID_HASHSIZE
246# if EV_MINIMAL 354# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
247# define EV_PID_HASHSIZE 1
248# else
249# define EV_PID_HASHSIZE 16
250# endif
251#endif 355#endif
252 356
253#ifndef EV_INOTIFY_HASHSIZE 357#ifndef EV_INOTIFY_HASHSIZE
254# if EV_MINIMAL 358# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
255# define EV_INOTIFY_HASHSIZE 1
256# else
257# define EV_INOTIFY_HASHSIZE 16
258# endif
259#endif 359#endif
260 360
261#ifndef EV_USE_EVENTFD 361#ifndef EV_USE_EVENTFD
262# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 362# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
263# define EV_USE_EVENTFD 1 363# define EV_USE_EVENTFD EV_FEATURE_OS
264# else 364# else
265# 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
266# endif 374# endif
267#endif 375#endif
268 376
269#if 0 /* debugging */ 377#if 0 /* debugging */
270# define EV_VERIFY 3 378# define EV_VERIFY 3
271# define EV_USE_4HEAP 1 379# define EV_USE_4HEAP 1
272# define EV_HEAP_CACHE_AT 1 380# define EV_HEAP_CACHE_AT 1
273#endif 381#endif
274 382
275#ifndef EV_VERIFY 383#ifndef EV_VERIFY
276# define EV_VERIFY !EV_MINIMAL 384# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
277#endif 385#endif
278 386
279#ifndef EV_USE_4HEAP 387#ifndef EV_USE_4HEAP
280# define EV_USE_4HEAP !EV_MINIMAL 388# define EV_USE_4HEAP EV_FEATURE_DATA
281#endif 389#endif
282 390
283#ifndef EV_HEAP_CACHE_AT 391#ifndef EV_HEAP_CACHE_AT
284# 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
409#endif
410
411/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
412/* which makes programs even slower. might work on other unices, too. */
413#if EV_USE_CLOCK_SYSCALL
414# include <sys/syscall.h>
415# ifdef SYS_clock_gettime
416# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
417# undef EV_USE_MONOTONIC
418# define EV_USE_MONOTONIC 1
419# define EV_NEED_SYSCALL 1
420# else
421# undef EV_USE_CLOCK_SYSCALL
422# define EV_USE_CLOCK_SYSCALL 0
423# endif
285#endif 424#endif
286 425
287/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 426/* this block fixes any misconfiguration where we know we run into trouble otherwise */
288 427
289#ifndef CLOCK_MONOTONIC 428#ifndef CLOCK_MONOTONIC
… …
300# undef EV_USE_INOTIFY 439# undef EV_USE_INOTIFY
301# define EV_USE_INOTIFY 0 440# define EV_USE_INOTIFY 0
302#endif 441#endif
303 442
304#if !EV_USE_NANOSLEEP 443#if !EV_USE_NANOSLEEP
305# ifndef _WIN32 444/* hp-ux has it in sys/time.h, which we unconditionally include above */
445# if !defined _WIN32 && !defined __hpux
306# include <sys/select.h> 446# include <sys/select.h>
307# endif 447# endif
308#endif 448#endif
309 449
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
310#if EV_USE_INOTIFY 475#if EV_USE_INOTIFY
311# include <sys/utsname.h>
312# include <sys/statfs.h> 476# include <sys/statfs.h>
313# include <sys/inotify.h> 477# include <sys/inotify.h>
314/* 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 */
315# ifndef IN_DONT_FOLLOW 479# ifndef IN_DONT_FOLLOW
316# undef EV_USE_INOTIFY 480# undef EV_USE_INOTIFY
317# define EV_USE_INOTIFY 0 481# define EV_USE_INOTIFY 0
318# endif 482# endif
319#endif 483#endif
320 484
321#if EV_SELECT_IS_WINSOCKET
322# include <winsock.h>
323#endif
324
325/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
326/* which makes programs even slower. might work on other unices, too. */
327#if EV_USE_CLOCK_SYSCALL
328# include <syscall.h>
329# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
330# undef EV_USE_MONOTONIC
331# define EV_USE_MONOTONIC 1
332#endif
333
334#if EV_USE_EVENTFD 485#if EV_USE_EVENTFD
335/* 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 */
336# include <stdint.h> 487# include <stdint.h>
337# ifdef __cplusplus 488# ifndef EFD_NONBLOCK
338extern "C" { 489# define EFD_NONBLOCK O_NONBLOCK
339# endif 490# endif
340int eventfd (unsigned int initval, int flags); 491# ifndef EFD_CLOEXEC
341# ifdef __cplusplus 492# ifdef O_CLOEXEC
342} 493# define EFD_CLOEXEC O_CLOEXEC
494# else
495# define EFD_CLOEXEC 02000000
496# endif
343# 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
344#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);
345 515
346/**/ 516struct signalfd_siginfo
517{
518 uint32_t ssi_signo;
519 char pad[128 - sizeof (uint32_t)];
520};
521#endif
522
523/*****************************************************************************/
347 524
348#if EV_VERIFY >= 3 525#if EV_VERIFY >= 3
349# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 526# define EV_FREQUENT_CHECK ev_verify (EV_A)
350#else 527#else
351# define EV_FREQUENT_CHECK do { } while (0) 528# define EV_FREQUENT_CHECK do { } while (0)
352#endif 529#endif
353 530
354/* 531/*
355 * This is used to avoid floating point rounding problems. 532 * This is used to work around floating point rounding problems.
356 * It is added to ev_rt_now when scheduling periodics
357 * to ensure progress, time-wise, even when rounding
358 * errors are against us.
359 * This value is good at least till the year 4000. 533 * This value is good at least till the year 4000.
360 * Better solutions welcome.
361 */ 534 */
362#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 */
363 537
364#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) */
365#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) */
366/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
367 540
541/* find a portable timestamp that is "alawys" 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 large than 32 bit, but and maybe the unlikely loating point time_t */
544#define EV_TSTAMP_HUGE \
545 (sizeof (time_t) >= 8 ? 10000000000000. \
546 : 0 < (time_t)4294967295 ? 4294967295. \
547 : 2147483647.) \
548
549#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
550#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
551
552/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
553/* ECB.H BEGIN */
554/*
555 * libecb - http://software.schmorp.de/pkg/libecb
556 *
557 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
558 * Copyright (©) 2011 Emanuele Giaquinta
559 * All rights reserved.
560 *
561 * Redistribution and use in source and binary forms, with or without modifica-
562 * tion, are permitted provided that the following conditions are met:
563 *
564 * 1. Redistributions of source code must retain the above copyright notice,
565 * this list of conditions and the following disclaimer.
566 *
567 * 2. Redistributions in binary form must reproduce the above copyright
568 * notice, this list of conditions and the following disclaimer in the
569 * documentation and/or other materials provided with the distribution.
570 *
571 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
572 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
573 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
574 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
575 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
576 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
577 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
578 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
579 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
580 * OF THE POSSIBILITY OF SUCH DAMAGE.
581 *
582 * Alternatively, the contents of this file may be used under the terms of
583 * the GNU General Public License ("GPL") version 2 or any later version,
584 * in which case the provisions of the GPL are applicable instead of
585 * the above. If you wish to allow the use of your version of this file
586 * only under the terms of the GPL and not to allow others to use your
587 * version of this file under the BSD license, indicate your decision
588 * by deleting the provisions above and replace them with the notice
589 * and other provisions required by the GPL. If you do not delete the
590 * provisions above, a recipient may use your version of this file under
591 * either the BSD or the GPL.
592 */
593
594#ifndef ECB_H
595#define ECB_H
596
597/* 16 bits major, 16 bits minor */
598#define ECB_VERSION 0x00010006
599
600#ifdef _WIN32
601 typedef signed char int8_t;
602 typedef unsigned char uint8_t;
603 typedef signed short int16_t;
604 typedef unsigned short uint16_t;
605 typedef signed int int32_t;
606 typedef unsigned int uint32_t;
368#if __GNUC__ >= 4 607 #if __GNUC__
369# define expect(expr,value) __builtin_expect ((expr),(value)) 608 typedef signed long long int64_t;
370# define noinline __attribute__ ((noinline)) 609 typedef unsigned long long uint64_t;
610 #else /* _MSC_VER || __BORLANDC__ */
611 typedef signed __int64 int64_t;
612 typedef unsigned __int64 uint64_t;
613 #endif
614 #ifdef _WIN64
615 #define ECB_PTRSIZE 8
616 typedef uint64_t uintptr_t;
617 typedef int64_t intptr_t;
618 #else
619 #define ECB_PTRSIZE 4
620 typedef uint32_t uintptr_t;
621 typedef int32_t intptr_t;
622 #endif
371#else 623#else
372# define expect(expr,value) (expr) 624 #include <inttypes.h>
373# define noinline 625 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
374# if __STDC_VERSION__ < 199901L && __GNUC__ < 2 626 #define ECB_PTRSIZE 8
375# define inline 627 #else
628 #define ECB_PTRSIZE 4
629 #endif
376# endif 630#endif
631
632#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
633#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
634
635/* work around x32 idiocy by defining proper macros */
636#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
637 #if _ILP32
638 #define ECB_AMD64_X32 1
639 #else
640 #define ECB_AMD64 1
377#endif 641 #endif
642#endif
378 643
379#define expect_false(expr) expect ((expr) != 0, 0) 644/* many compilers define _GNUC_ to some versions but then only implement
380#define expect_true(expr) expect ((expr) != 0, 1) 645 * what their idiot authors think are the "more important" extensions,
381#define inline_size static inline 646 * causing enormous grief in return for some better fake benchmark numbers.
382 647 * or so.
383#if EV_MINIMAL 648 * we try to detect these and simply assume they are not gcc - if they have
384# define inline_speed static noinline 649 * an issue with that they should have done it right in the first place.
650 */
651#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
652 #define ECB_GCC_VERSION(major,minor) 0
385#else 653#else
654 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
655#endif
656
657#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
658
659#if __clang__ && defined __has_builtin
660 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
661#else
662 #define ECB_CLANG_BUILTIN(x) 0
663#endif
664
665#if __clang__ && defined __has_extension
666 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
667#else
668 #define ECB_CLANG_EXTENSION(x) 0
669#endif
670
671#define ECB_CPP (__cplusplus+0)
672#define ECB_CPP11 (__cplusplus >= 201103L)
673#define ECB_CPP14 (__cplusplus >= 201402L)
674#define ECB_CPP17 (__cplusplus >= 201703L)
675
676#if ECB_CPP
677 #define ECB_C 0
678 #define ECB_STDC_VERSION 0
679#else
680 #define ECB_C 1
681 #define ECB_STDC_VERSION __STDC_VERSION__
682#endif
683
684#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
685#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
686#define ECB_C17 (ECB_STDC_VERSION >= 201710L)
687
688#if ECB_CPP
689 #define ECB_EXTERN_C extern "C"
690 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
691 #define ECB_EXTERN_C_END }
692#else
693 #define ECB_EXTERN_C extern
694 #define ECB_EXTERN_C_BEG
695 #define ECB_EXTERN_C_END
696#endif
697
698/*****************************************************************************/
699
700/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
701/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
702
703#if ECB_NO_THREADS
704 #define ECB_NO_SMP 1
705#endif
706
707#if ECB_NO_SMP
708 #define ECB_MEMORY_FENCE do { } while (0)
709#endif
710
711/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
712#if __xlC__ && ECB_CPP
713 #include <builtins.h>
714#endif
715
716#if 1400 <= _MSC_VER
717 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
718#endif
719
720#ifndef ECB_MEMORY_FENCE
721 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
722 #define ECB_MEMORY_FENCE_RELAXED __asm__ __volatile__ ("" : : : "memory")
723 #if __i386 || __i386__
724 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
725 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
726 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
727 #elif ECB_GCC_AMD64
728 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
729 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
730 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
731 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
732 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
733 #elif defined __ARM_ARCH_2__ \
734 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
735 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
736 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
737 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
738 || defined __ARM_ARCH_5TEJ__
739 /* should not need any, unless running old code on newer cpu - arm doesn't support that */
740 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
741 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
742 || defined __ARM_ARCH_6T2__
743 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
744 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
745 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
746 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
747 #elif __aarch64__
748 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
749 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
750 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
751 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
752 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
753 #elif defined __s390__ || defined __s390x__
754 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
755 #elif defined __mips__
756 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
757 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
758 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
759 #elif defined __alpha__
760 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
761 #elif defined __hppa__
762 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
763 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
764 #elif defined __ia64__
765 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
766 #elif defined __m68k__
767 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
768 #elif defined __m88k__
769 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
770 #elif defined __sh__
771 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
772 #endif
773 #endif
774#endif
775
776#ifndef ECB_MEMORY_FENCE
777 #if ECB_GCC_VERSION(4,7)
778 /* see comment below (stdatomic.h) about the C11 memory model. */
779 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
780 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
781 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
782 #define ECB_MEMORY_FENCE_RELAXED __atomic_thread_fence (__ATOMIC_RELAXED)
783
784 #elif ECB_CLANG_EXTENSION(c_atomic)
785 /* see comment below (stdatomic.h) about the C11 memory model. */
786 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
787 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
788 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
789 #define ECB_MEMORY_FENCE_RELAXED __c11_atomic_thread_fence (__ATOMIC_RELAXED)
790
791 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
792 #define ECB_MEMORY_FENCE __sync_synchronize ()
793 #elif _MSC_VER >= 1500 /* VC++ 2008 */
794 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
795 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
796 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
797 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
798 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
799 #elif _MSC_VER >= 1400 /* VC++ 2005 */
800 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
801 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
802 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
803 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
804 #elif defined _WIN32
805 #include <WinNT.h>
806 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
807 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
808 #include <mbarrier.h>
809 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
810 #define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier ()
811 #define ECB_MEMORY_FENCE_RELEASE __machine_rel_barrier ()
812 #define ECB_MEMORY_FENCE_RELAXED __compiler_barrier ()
813 #elif __xlC__
814 #define ECB_MEMORY_FENCE __sync ()
815 #endif
816#endif
817
818#ifndef ECB_MEMORY_FENCE
819 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
820 /* we assume that these memory fences work on all variables/all memory accesses, */
821 /* not just C11 atomics and atomic accesses */
822 #include <stdatomic.h>
823 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
824 #define ECB_MEMORY_FENCE_ACQUIRE atomic_thread_fence (memory_order_acquire)
825 #define ECB_MEMORY_FENCE_RELEASE atomic_thread_fence (memory_order_release)
826 #endif
827#endif
828
829#ifndef ECB_MEMORY_FENCE
830 #if !ECB_AVOID_PTHREADS
831 /*
832 * if you get undefined symbol references to pthread_mutex_lock,
833 * or failure to find pthread.h, then you should implement
834 * the ECB_MEMORY_FENCE operations for your cpu/compiler
835 * OR provide pthread.h and link against the posix thread library
836 * of your system.
837 */
838 #include <pthread.h>
839 #define ECB_NEEDS_PTHREADS 1
840 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
841
842 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
843 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
844 #endif
845#endif
846
847#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
848 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
849#endif
850
851#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
852 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
853#endif
854
855#if !defined ECB_MEMORY_FENCE_RELAXED && defined ECB_MEMORY_FENCE
856 #define ECB_MEMORY_FENCE_RELAXED ECB_MEMORY_FENCE /* very heavy-handed */
857#endif
858
859/*****************************************************************************/
860
861#if ECB_CPP
862 #define ecb_inline static inline
863#elif ECB_GCC_VERSION(2,5)
864 #define ecb_inline static __inline__
865#elif ECB_C99
866 #define ecb_inline static inline
867#else
868 #define ecb_inline static
869#endif
870
871#if ECB_GCC_VERSION(3,3)
872 #define ecb_restrict __restrict__
873#elif ECB_C99
874 #define ecb_restrict restrict
875#else
876 #define ecb_restrict
877#endif
878
879typedef int ecb_bool;
880
881#define ECB_CONCAT_(a, b) a ## b
882#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
883#define ECB_STRINGIFY_(a) # a
884#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
885#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
886
887#define ecb_function_ ecb_inline
888
889#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
890 #define ecb_attribute(attrlist) __attribute__ (attrlist)
891#else
892 #define ecb_attribute(attrlist)
893#endif
894
895#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
896 #define ecb_is_constant(expr) __builtin_constant_p (expr)
897#else
898 /* possible C11 impl for integral types
899 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
900 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
901
902 #define ecb_is_constant(expr) 0
903#endif
904
905#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
906 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
907#else
908 #define ecb_expect(expr,value) (expr)
909#endif
910
911#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
912 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
913#else
914 #define ecb_prefetch(addr,rw,locality)
915#endif
916
917/* no emulation for ecb_decltype */
918#if ECB_CPP11
919 // older implementations might have problems with decltype(x)::type, work around it
920 template<class T> struct ecb_decltype_t { typedef T type; };
921 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
922#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
923 #define ecb_decltype(x) __typeof__ (x)
924#endif
925
926#if _MSC_VER >= 1300
927 #define ecb_deprecated __declspec (deprecated)
928#else
929 #define ecb_deprecated ecb_attribute ((__deprecated__))
930#endif
931
932#if _MSC_VER >= 1500
933 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
934#elif ECB_GCC_VERSION(4,5)
935 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
936#else
937 #define ecb_deprecated_message(msg) ecb_deprecated
938#endif
939
940#if _MSC_VER >= 1400
941 #define ecb_noinline __declspec (noinline)
942#else
943 #define ecb_noinline ecb_attribute ((__noinline__))
944#endif
945
946#define ecb_unused ecb_attribute ((__unused__))
947#define ecb_const ecb_attribute ((__const__))
948#define ecb_pure ecb_attribute ((__pure__))
949
950#if ECB_C11 || __IBMC_NORETURN
951 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
952 #define ecb_noreturn _Noreturn
953#elif ECB_CPP11
954 #define ecb_noreturn [[noreturn]]
955#elif _MSC_VER >= 1200
956 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
957 #define ecb_noreturn __declspec (noreturn)
958#else
959 #define ecb_noreturn ecb_attribute ((__noreturn__))
960#endif
961
962#if ECB_GCC_VERSION(4,3)
963 #define ecb_artificial ecb_attribute ((__artificial__))
964 #define ecb_hot ecb_attribute ((__hot__))
965 #define ecb_cold ecb_attribute ((__cold__))
966#else
967 #define ecb_artificial
968 #define ecb_hot
969 #define ecb_cold
970#endif
971
972/* put around conditional expressions if you are very sure that the */
973/* expression is mostly true or mostly false. note that these return */
974/* booleans, not the expression. */
975#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
976#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
977/* for compatibility to the rest of the world */
978#define ecb_likely(expr) ecb_expect_true (expr)
979#define ecb_unlikely(expr) ecb_expect_false (expr)
980
981/* count trailing zero bits and count # of one bits */
982#if ECB_GCC_VERSION(3,4) \
983 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
984 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
985 && ECB_CLANG_BUILTIN(__builtin_popcount))
986 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
987 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
988 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
989 #define ecb_ctz32(x) __builtin_ctz (x)
990 #define ecb_ctz64(x) __builtin_ctzll (x)
991 #define ecb_popcount32(x) __builtin_popcount (x)
992 /* no popcountll */
993#else
994 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
995 ecb_function_ ecb_const int
996 ecb_ctz32 (uint32_t x)
997 {
998#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
999 unsigned long r;
1000 _BitScanForward (&r, x);
1001 return (int)r;
1002#else
1003 int r = 0;
1004
1005 x &= ~x + 1; /* this isolates the lowest bit */
1006
1007#if ECB_branchless_on_i386
1008 r += !!(x & 0xaaaaaaaa) << 0;
1009 r += !!(x & 0xcccccccc) << 1;
1010 r += !!(x & 0xf0f0f0f0) << 2;
1011 r += !!(x & 0xff00ff00) << 3;
1012 r += !!(x & 0xffff0000) << 4;
1013#else
1014 if (x & 0xaaaaaaaa) r += 1;
1015 if (x & 0xcccccccc) r += 2;
1016 if (x & 0xf0f0f0f0) r += 4;
1017 if (x & 0xff00ff00) r += 8;
1018 if (x & 0xffff0000) r += 16;
1019#endif
1020
1021 return r;
1022#endif
1023 }
1024
1025 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
1026 ecb_function_ ecb_const int
1027 ecb_ctz64 (uint64_t x)
1028 {
1029#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1030 unsigned long r;
1031 _BitScanForward64 (&r, x);
1032 return (int)r;
1033#else
1034 int shift = x & 0xffffffff ? 0 : 32;
1035 return ecb_ctz32 (x >> shift) + shift;
1036#endif
1037 }
1038
1039 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
1040 ecb_function_ ecb_const int
1041 ecb_popcount32 (uint32_t x)
1042 {
1043 x -= (x >> 1) & 0x55555555;
1044 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
1045 x = ((x >> 4) + x) & 0x0f0f0f0f;
1046 x *= 0x01010101;
1047
1048 return x >> 24;
1049 }
1050
1051 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
1052 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
1053 {
1054#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1055 unsigned long r;
1056 _BitScanReverse (&r, x);
1057 return (int)r;
1058#else
1059 int r = 0;
1060
1061 if (x >> 16) { x >>= 16; r += 16; }
1062 if (x >> 8) { x >>= 8; r += 8; }
1063 if (x >> 4) { x >>= 4; r += 4; }
1064 if (x >> 2) { x >>= 2; r += 2; }
1065 if (x >> 1) { r += 1; }
1066
1067 return r;
1068#endif
1069 }
1070
1071 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
1072 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
1073 {
1074#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1075 unsigned long r;
1076 _BitScanReverse64 (&r, x);
1077 return (int)r;
1078#else
1079 int r = 0;
1080
1081 if (x >> 32) { x >>= 32; r += 32; }
1082
1083 return r + ecb_ld32 (x);
1084#endif
1085 }
1086#endif
1087
1088ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
1089ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
1090ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
1091ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
1092
1093ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
1094ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
1095{
1096 return ( (x * 0x0802U & 0x22110U)
1097 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
1098}
1099
1100ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
1101ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
1102{
1103 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
1104 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
1105 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
1106 x = ( x >> 8 ) | ( x << 8);
1107
1108 return x;
1109}
1110
1111ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
1112ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
1113{
1114 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
1115 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
1116 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
1117 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
1118 x = ( x >> 16 ) | ( x << 16);
1119
1120 return x;
1121}
1122
1123/* popcount64 is only available on 64 bit cpus as gcc builtin */
1124/* so for this version we are lazy */
1125ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
1126ecb_function_ ecb_const int
1127ecb_popcount64 (uint64_t x)
1128{
1129 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
1130}
1131
1132ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
1133ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
1134ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
1135ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
1136ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
1137ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
1138ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
1139ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
1140
1141ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
1142ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
1143ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
1144ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
1145ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
1146ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
1147ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
1148ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
1149
1150#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1151 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1152 #define ecb_bswap16(x) __builtin_bswap16 (x)
1153 #else
1154 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1155 #endif
1156 #define ecb_bswap32(x) __builtin_bswap32 (x)
1157 #define ecb_bswap64(x) __builtin_bswap64 (x)
1158#elif _MSC_VER
1159 #include <stdlib.h>
1160 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1161 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1162 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
1163#else
1164 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
1165 ecb_function_ ecb_const uint16_t
1166 ecb_bswap16 (uint16_t x)
1167 {
1168 return ecb_rotl16 (x, 8);
1169 }
1170
1171 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
1172 ecb_function_ ecb_const uint32_t
1173 ecb_bswap32 (uint32_t x)
1174 {
1175 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
1176 }
1177
1178 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
1179 ecb_function_ ecb_const uint64_t
1180 ecb_bswap64 (uint64_t x)
1181 {
1182 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
1183 }
1184#endif
1185
1186#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
1187 #define ecb_unreachable() __builtin_unreachable ()
1188#else
1189 /* this seems to work fine, but gcc always emits a warning for it :/ */
1190 ecb_inline ecb_noreturn void ecb_unreachable (void);
1191 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
1192#endif
1193
1194/* try to tell the compiler that some condition is definitely true */
1195#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
1196
1197ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
1198ecb_inline ecb_const uint32_t
1199ecb_byteorder_helper (void)
1200{
1201 /* the union code still generates code under pressure in gcc, */
1202 /* but less than using pointers, and always seems to */
1203 /* successfully return a constant. */
1204 /* the reason why we have this horrible preprocessor mess */
1205 /* is to avoid it in all cases, at least on common architectures */
1206 /* or when using a recent enough gcc version (>= 4.6) */
1207#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1208 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1209 #define ECB_LITTLE_ENDIAN 1
1210 return 0x44332211;
1211#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1212 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1213 #define ECB_BIG_ENDIAN 1
1214 return 0x11223344;
1215#else
1216 union
1217 {
1218 uint8_t c[4];
1219 uint32_t u;
1220 } u = { 0x11, 0x22, 0x33, 0x44 };
1221 return u.u;
1222#endif
1223}
1224
1225ecb_inline ecb_const ecb_bool ecb_big_endian (void);
1226ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
1227ecb_inline ecb_const ecb_bool ecb_little_endian (void);
1228ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
1229
1230#if ECB_GCC_VERSION(3,0) || ECB_C99
1231 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1232#else
1233 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1234#endif
1235
1236#if ECB_CPP
1237 template<typename T>
1238 static inline T ecb_div_rd (T val, T div)
1239 {
1240 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1241 }
1242 template<typename T>
1243 static inline T ecb_div_ru (T val, T div)
1244 {
1245 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1246 }
1247#else
1248 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1249 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1250#endif
1251
1252#if ecb_cplusplus_does_not_suck
1253 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1254 template<typename T, int N>
1255 static inline int ecb_array_length (const T (&arr)[N])
1256 {
1257 return N;
1258 }
1259#else
1260 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1261#endif
1262
1263ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1264ecb_function_ ecb_const uint32_t
1265ecb_binary16_to_binary32 (uint32_t x)
1266{
1267 unsigned int s = (x & 0x8000) << (31 - 15);
1268 int e = (x >> 10) & 0x001f;
1269 unsigned int m = x & 0x03ff;
1270
1271 if (ecb_expect_false (e == 31))
1272 /* infinity or NaN */
1273 e = 255 - (127 - 15);
1274 else if (ecb_expect_false (!e))
1275 {
1276 if (ecb_expect_true (!m))
1277 /* zero, handled by code below by forcing e to 0 */
1278 e = 0 - (127 - 15);
1279 else
1280 {
1281 /* subnormal, renormalise */
1282 unsigned int s = 10 - ecb_ld32 (m);
1283
1284 m = (m << s) & 0x3ff; /* mask implicit bit */
1285 e -= s - 1;
1286 }
1287 }
1288
1289 /* e and m now are normalised, or zero, (or inf or nan) */
1290 e += 127 - 15;
1291
1292 return s | (e << 23) | (m << (23 - 10));
1293}
1294
1295ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1296ecb_function_ ecb_const uint16_t
1297ecb_binary32_to_binary16 (uint32_t x)
1298{
1299 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1300 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1301 unsigned int m = x & 0x007fffff;
1302
1303 x &= 0x7fffffff;
1304
1305 /* if it's within range of binary16 normals, use fast path */
1306 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1307 {
1308 /* mantissa round-to-even */
1309 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1310
1311 /* handle overflow */
1312 if (ecb_expect_false (m >= 0x00800000))
1313 {
1314 m >>= 1;
1315 e += 1;
1316 }
1317
1318 return s | (e << 10) | (m >> (23 - 10));
1319 }
1320
1321 /* handle large numbers and infinity */
1322 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1323 return s | 0x7c00;
1324
1325 /* handle zero, subnormals and small numbers */
1326 if (ecb_expect_true (x < 0x38800000))
1327 {
1328 /* zero */
1329 if (ecb_expect_true (!x))
1330 return s;
1331
1332 /* handle subnormals */
1333
1334 /* too small, will be zero */
1335 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1336 return s;
1337
1338 m |= 0x00800000; /* make implicit bit explicit */
1339
1340 /* very tricky - we need to round to the nearest e (+10) bit value */
1341 {
1342 unsigned int bits = 14 - e;
1343 unsigned int half = (1 << (bits - 1)) - 1;
1344 unsigned int even = (m >> bits) & 1;
1345
1346 /* if this overflows, we will end up with a normalised number */
1347 m = (m + half + even) >> bits;
1348 }
1349
1350 return s | m;
1351 }
1352
1353 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1354 m >>= 13;
1355
1356 return s | 0x7c00 | m | !m;
1357}
1358
1359/*******************************************************************************/
1360/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1361
1362/* basically, everything uses "ieee pure-endian" floating point numbers */
1363/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1364#if 0 \
1365 || __i386 || __i386__ \
1366 || ECB_GCC_AMD64 \
1367 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1368 || defined __s390__ || defined __s390x__ \
1369 || defined __mips__ \
1370 || defined __alpha__ \
1371 || defined __hppa__ \
1372 || defined __ia64__ \
1373 || defined __m68k__ \
1374 || defined __m88k__ \
1375 || defined __sh__ \
1376 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1377 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1378 || defined __aarch64__
1379 #define ECB_STDFP 1
1380 #include <string.h> /* for memcpy */
1381#else
1382 #define ECB_STDFP 0
1383#endif
1384
1385#ifndef ECB_NO_LIBM
1386
1387 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1388
1389 /* only the oldest of old doesn't have this one. solaris. */
1390 #ifdef INFINITY
1391 #define ECB_INFINITY INFINITY
1392 #else
1393 #define ECB_INFINITY HUGE_VAL
1394 #endif
1395
1396 #ifdef NAN
1397 #define ECB_NAN NAN
1398 #else
1399 #define ECB_NAN ECB_INFINITY
1400 #endif
1401
1402 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1403 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1404 #define ecb_frexpf(x,e) frexpf ((x), (e))
1405 #else
1406 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1407 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1408 #endif
1409
1410 /* convert a float to ieee single/binary32 */
1411 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1412 ecb_function_ ecb_const uint32_t
1413 ecb_float_to_binary32 (float x)
1414 {
1415 uint32_t r;
1416
1417 #if ECB_STDFP
1418 memcpy (&r, &x, 4);
1419 #else
1420 /* slow emulation, works for anything but -0 */
1421 uint32_t m;
1422 int e;
1423
1424 if (x == 0e0f ) return 0x00000000U;
1425 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1426 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1427 if (x != x ) return 0x7fbfffffU;
1428
1429 m = ecb_frexpf (x, &e) * 0x1000000U;
1430
1431 r = m & 0x80000000U;
1432
1433 if (r)
1434 m = -m;
1435
1436 if (e <= -126)
1437 {
1438 m &= 0xffffffU;
1439 m >>= (-125 - e);
1440 e = -126;
1441 }
1442
1443 r |= (e + 126) << 23;
1444 r |= m & 0x7fffffU;
1445 #endif
1446
1447 return r;
1448 }
1449
1450 /* converts an ieee single/binary32 to a float */
1451 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1452 ecb_function_ ecb_const float
1453 ecb_binary32_to_float (uint32_t x)
1454 {
1455 float r;
1456
1457 #if ECB_STDFP
1458 memcpy (&r, &x, 4);
1459 #else
1460 /* emulation, only works for normals and subnormals and +0 */
1461 int neg = x >> 31;
1462 int e = (x >> 23) & 0xffU;
1463
1464 x &= 0x7fffffU;
1465
1466 if (e)
1467 x |= 0x800000U;
1468 else
1469 e = 1;
1470
1471 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1472 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1473
1474 r = neg ? -r : r;
1475 #endif
1476
1477 return r;
1478 }
1479
1480 /* convert a double to ieee double/binary64 */
1481 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1482 ecb_function_ ecb_const uint64_t
1483 ecb_double_to_binary64 (double x)
1484 {
1485 uint64_t r;
1486
1487 #if ECB_STDFP
1488 memcpy (&r, &x, 8);
1489 #else
1490 /* slow emulation, works for anything but -0 */
1491 uint64_t m;
1492 int e;
1493
1494 if (x == 0e0 ) return 0x0000000000000000U;
1495 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1496 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1497 if (x != x ) return 0X7ff7ffffffffffffU;
1498
1499 m = frexp (x, &e) * 0x20000000000000U;
1500
1501 r = m & 0x8000000000000000;;
1502
1503 if (r)
1504 m = -m;
1505
1506 if (e <= -1022)
1507 {
1508 m &= 0x1fffffffffffffU;
1509 m >>= (-1021 - e);
1510 e = -1022;
1511 }
1512
1513 r |= ((uint64_t)(e + 1022)) << 52;
1514 r |= m & 0xfffffffffffffU;
1515 #endif
1516
1517 return r;
1518 }
1519
1520 /* converts an ieee double/binary64 to a double */
1521 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1522 ecb_function_ ecb_const double
1523 ecb_binary64_to_double (uint64_t x)
1524 {
1525 double r;
1526
1527 #if ECB_STDFP
1528 memcpy (&r, &x, 8);
1529 #else
1530 /* emulation, only works for normals and subnormals and +0 */
1531 int neg = x >> 63;
1532 int e = (x >> 52) & 0x7ffU;
1533
1534 x &= 0xfffffffffffffU;
1535
1536 if (e)
1537 x |= 0x10000000000000U;
1538 else
1539 e = 1;
1540
1541 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1542 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1543
1544 r = neg ? -r : r;
1545 #endif
1546
1547 return r;
1548 }
1549
1550 /* convert a float to ieee half/binary16 */
1551 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1552 ecb_function_ ecb_const uint16_t
1553 ecb_float_to_binary16 (float x)
1554 {
1555 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1556 }
1557
1558 /* convert an ieee half/binary16 to float */
1559 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1560 ecb_function_ ecb_const float
1561 ecb_binary16_to_float (uint16_t x)
1562 {
1563 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1564 }
1565
1566#endif
1567
1568#endif
1569
1570/* ECB.H END */
1571
1572#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1573/* if your architecture doesn't need memory fences, e.g. because it is
1574 * single-cpu/core, or if you use libev in a project that doesn't use libev
1575 * from multiple threads, then you can define ECB_NO_THREADS when compiling
1576 * libev, in which cases the memory fences become nops.
1577 * alternatively, you can remove this #error and link against libpthread,
1578 * which will then provide the memory fences.
1579 */
1580# error "memory fences not defined for your architecture, please report"
1581#endif
1582
1583#ifndef ECB_MEMORY_FENCE
1584# define ECB_MEMORY_FENCE do { } while (0)
1585# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1586# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1587#endif
1588
1589#define inline_size ecb_inline
1590
1591#if EV_FEATURE_CODE
386# define inline_speed static inline 1592# define inline_speed ecb_inline
1593#else
1594# define inline_speed ecb_noinline static
387#endif 1595#endif
388 1596
1597/*****************************************************************************/
1598/* raw syscall wrappers */
1599
1600#if EV_NEED_SYSCALL
1601
1602#include <sys/syscall.h>
1603
1604/*
1605 * define some syscall wrappers for common architectures
1606 * this is mostly for nice looks during debugging, not performance.
1607 * our syscalls return < 0, not == -1, on error. which is good
1608 * enough for linux aio.
1609 * TODO: arm is also common nowadays, maybe even mips and x86
1610 * TODO: after implementing this, it suddenly looks like overkill, but its hard to remove...
1611 */
1612#if __GNUC__ && __linux && ECB_AMD64 && !defined __OPTIMIZE_SIZE__
1613 /* the costly errno access probably kills this for size optimisation */
1614
1615 #define ev_syscall(nr,narg,arg1,arg2,arg3,arg4,arg5,arg6) \
1616 ({ \
1617 long res; \
1618 register unsigned long r6 __asm__ ("r9" ); \
1619 register unsigned long r5 __asm__ ("r8" ); \
1620 register unsigned long r4 __asm__ ("r10"); \
1621 register unsigned long r3 __asm__ ("rdx"); \
1622 register unsigned long r2 __asm__ ("rsi"); \
1623 register unsigned long r1 __asm__ ("rdi"); \
1624 if (narg >= 6) r6 = (unsigned long)(arg6); \
1625 if (narg >= 5) r5 = (unsigned long)(arg5); \
1626 if (narg >= 4) r4 = (unsigned long)(arg4); \
1627 if (narg >= 3) r3 = (unsigned long)(arg3); \
1628 if (narg >= 2) r2 = (unsigned long)(arg2); \
1629 if (narg >= 1) r1 = (unsigned long)(arg1); \
1630 __asm__ __volatile__ ( \
1631 "syscall\n\t" \
1632 : "=a" (res) \
1633 : "0" (nr), "r" (r1), "r" (r2), "r" (r3), "r" (r4), "r" (r5) \
1634 : "cc", "r11", "cx", "memory"); \
1635 errno = -res; \
1636 res; \
1637 })
1638
1639#endif
1640
1641#ifdef ev_syscall
1642 #define ev_syscall0(nr) ev_syscall (nr, 0, 0, 0, 0, 0, 0, 0)
1643 #define ev_syscall1(nr,arg1) ev_syscall (nr, 1, arg1, 0, 0, 0, 0, 0)
1644 #define ev_syscall2(nr,arg1,arg2) ev_syscall (nr, 2, arg1, arg2, 0, 0, 0, 0)
1645 #define ev_syscall3(nr,arg1,arg2,arg3) ev_syscall (nr, 3, arg1, arg2, arg3, 0, 0, 0)
1646 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) ev_syscall (nr, 3, arg1, arg2, arg3, arg4, 0, 0)
1647 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) ev_syscall (nr, 5, arg1, arg2, arg3, arg4, arg5, 0)
1648 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) ev_syscall (nr, 6, arg1, arg2, arg3, arg4, arg5,arg6)
1649#else
1650 #define ev_syscall0(nr) syscall (nr)
1651 #define ev_syscall1(nr,arg1) syscall (nr, arg1)
1652 #define ev_syscall2(nr,arg1,arg2) syscall (nr, arg1, arg2)
1653 #define ev_syscall3(nr,arg1,arg2,arg3) syscall (nr, arg1, arg2, arg3)
1654 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) syscall (nr, arg1, arg2, arg3, arg4)
1655 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) syscall (nr, arg1, arg2, arg3, arg4, arg5)
1656 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) syscall (nr, arg1, arg2, arg3, arg4, arg5,arg6)
1657#endif
1658
1659#endif
1660
1661/*****************************************************************************/
1662
389#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1663#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
1664
1665#if EV_MINPRI == EV_MAXPRI
1666# define ABSPRI(w) (((W)w), 0)
1667#else
390#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1668# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
1669#endif
391 1670
392#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1671#define EMPTY /* required for microsofts broken pseudo-c compiler */
393#define EMPTY2(a,b) /* used to suppress some warnings */
394 1672
395typedef ev_watcher *W; 1673typedef ev_watcher *W;
396typedef ev_watcher_list *WL; 1674typedef ev_watcher_list *WL;
397typedef ev_watcher_time *WT; 1675typedef ev_watcher_time *WT;
398 1676
399#define ev_active(w) ((W)(w))->active 1677#define ev_active(w) ((W)(w))->active
400#define ev_at(w) ((WT)(w))->at 1678#define ev_at(w) ((WT)(w))->at
401 1679
402#if EV_USE_REALTIME 1680#if EV_USE_REALTIME
403/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 1681/* sig_atomic_t is used to avoid per-thread variables or locking but still */
404/* giving it a reasonably high chance of working on typical architetcures */ 1682/* giving it a reasonably high chance of working on typical architectures */
405static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 1683static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
406#endif 1684#endif
407 1685
408#if EV_USE_MONOTONIC 1686#if EV_USE_MONOTONIC
409static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 1687static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
410#endif 1688#endif
411 1689
1690#ifndef EV_FD_TO_WIN32_HANDLE
1691# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
1692#endif
1693#ifndef EV_WIN32_HANDLE_TO_FD
1694# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
1695#endif
1696#ifndef EV_WIN32_CLOSE_FD
1697# define EV_WIN32_CLOSE_FD(fd) close (fd)
1698#endif
1699
412#ifdef _WIN32 1700#ifdef _WIN32
413# include "ev_win32.c" 1701# include "ev_win32.c"
414#endif 1702#endif
415 1703
416/*****************************************************************************/ 1704/*****************************************************************************/
417 1705
1706#if EV_USE_LINUXAIO
1707# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
1708#endif
1709
1710/* define a suitable floor function (only used by periodics atm) */
1711
1712#if EV_USE_FLOOR
1713# include <math.h>
1714# define ev_floor(v) floor (v)
1715#else
1716
1717#include <float.h>
1718
1719/* a floor() replacement function, should be independent of ev_tstamp type */
1720ecb_noinline
1721static ev_tstamp
1722ev_floor (ev_tstamp v)
1723{
1724 /* the choice of shift factor is not terribly important */
1725#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1726 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1727#else
1728 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1729#endif
1730
1731 /* special treatment for negative arguments */
1732 if (ecb_expect_false (v < 0.))
1733 {
1734 ev_tstamp f = -ev_floor (-v);
1735
1736 return f - (f == v ? 0 : 1);
1737 }
1738
1739 /* argument too large for an unsigned long? then reduce it */
1740 if (ecb_expect_false (v >= shift))
1741 {
1742 ev_tstamp f;
1743
1744 if (v == v - 1.)
1745 return v; /* very large numbers are assumed to be integer */
1746
1747 f = shift * ev_floor (v * (1. / shift));
1748 return f + ev_floor (v - f);
1749 }
1750
1751 /* fits into an unsigned long */
1752 return (unsigned long)v;
1753}
1754
1755#endif
1756
1757/*****************************************************************************/
1758
1759#ifdef __linux
1760# include <sys/utsname.h>
1761#endif
1762
1763ecb_noinline ecb_cold
1764static unsigned int
1765ev_linux_version (void)
1766{
1767#ifdef __linux
1768 unsigned int v = 0;
1769 struct utsname buf;
1770 int i;
1771 char *p = buf.release;
1772
1773 if (uname (&buf))
1774 return 0;
1775
1776 for (i = 3+1; --i; )
1777 {
1778 unsigned int c = 0;
1779
1780 for (;;)
1781 {
1782 if (*p >= '0' && *p <= '9')
1783 c = c * 10 + *p++ - '0';
1784 else
1785 {
1786 p += *p == '.';
1787 break;
1788 }
1789 }
1790
1791 v = (v << 8) | c;
1792 }
1793
1794 return v;
1795#else
1796 return 0;
1797#endif
1798}
1799
1800/*****************************************************************************/
1801
1802#if EV_AVOID_STDIO
1803ecb_noinline ecb_cold
1804static void
1805ev_printerr (const char *msg)
1806{
1807 write (STDERR_FILENO, msg, strlen (msg));
1808}
1809#endif
1810
418static void (*syserr_cb)(const char *msg); 1811static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
419 1812
1813ecb_cold
420void 1814void
421ev_set_syserr_cb (void (*cb)(const char *msg)) 1815ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
422{ 1816{
423 syserr_cb = cb; 1817 syserr_cb = cb;
424} 1818}
425 1819
426static void noinline 1820ecb_noinline ecb_cold
1821static void
427ev_syserr (const char *msg) 1822ev_syserr (const char *msg)
428{ 1823{
429 if (!msg) 1824 if (!msg)
430 msg = "(libev) system error"; 1825 msg = "(libev) system error";
431 1826
432 if (syserr_cb) 1827 if (syserr_cb)
433 syserr_cb (msg); 1828 syserr_cb (msg);
434 else 1829 else
435 { 1830 {
1831#if EV_AVOID_STDIO
1832 ev_printerr (msg);
1833 ev_printerr (": ");
1834 ev_printerr (strerror (errno));
1835 ev_printerr ("\n");
1836#else
436 perror (msg); 1837 perror (msg);
1838#endif
437 abort (); 1839 abort ();
438 } 1840 }
439} 1841}
440 1842
441static void * 1843static void *
442ev_realloc_emul (void *ptr, long size) 1844ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
443{ 1845{
444 /* some systems, notably openbsd and darwin, fail to properly 1846 /* some systems, notably openbsd and darwin, fail to properly
445 * implement realloc (x, 0) (as required by both ansi c-98 and 1847 * implement realloc (x, 0) (as required by both ansi c-89 and
446 * the single unix specification, so work around them here. 1848 * the single unix specification, so work around them here.
1849 * recently, also (at least) fedora and debian started breaking it,
1850 * despite documenting it otherwise.
447 */ 1851 */
448 1852
449 if (size) 1853 if (size)
450 return realloc (ptr, size); 1854 return realloc (ptr, size);
451 1855
452 free (ptr); 1856 free (ptr);
453 return 0; 1857 return 0;
454} 1858}
455 1859
456static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1860static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
457 1861
1862ecb_cold
458void 1863void
459ev_set_allocator (void *(*cb)(void *ptr, long size)) 1864ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
460{ 1865{
461 alloc = cb; 1866 alloc = cb;
462} 1867}
463 1868
464inline_speed void * 1869inline_speed void *
… …
466{ 1871{
467 ptr = alloc (ptr, size); 1872 ptr = alloc (ptr, size);
468 1873
469 if (!ptr && size) 1874 if (!ptr && size)
470 { 1875 {
1876#if EV_AVOID_STDIO
1877 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1878#else
471 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1879 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1880#endif
472 abort (); 1881 abort ();
473 } 1882 }
474 1883
475 return ptr; 1884 return ptr;
476} 1885}
… …
478#define ev_malloc(size) ev_realloc (0, (size)) 1887#define ev_malloc(size) ev_realloc (0, (size))
479#define ev_free(ptr) ev_realloc ((ptr), 0) 1888#define ev_free(ptr) ev_realloc ((ptr), 0)
480 1889
481/*****************************************************************************/ 1890/*****************************************************************************/
482 1891
1892/* set in reify when reification needed */
1893#define EV_ANFD_REIFY 1
1894
1895/* file descriptor info structure */
483typedef struct 1896typedef struct
484{ 1897{
485 WL head; 1898 WL head;
486 unsigned char events; 1899 unsigned char events; /* the events watched for */
487 unsigned char reify; 1900 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
488 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1901 unsigned char emask; /* some backends store the actual kernel mask in here */
489 unsigned char unused; 1902 unsigned char eflags; /* flags field for use by backends */
490#if EV_USE_EPOLL 1903#if EV_USE_EPOLL
491 unsigned int egen; /* generation counter to counter epoll bugs */ 1904 unsigned int egen; /* generation counter to counter epoll bugs */
492#endif 1905#endif
493#if EV_SELECT_IS_WINSOCKET 1906#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
494 SOCKET handle; 1907 SOCKET handle;
495#endif 1908#endif
1909#if EV_USE_IOCP
1910 OVERLAPPED or, ow;
1911#endif
496} ANFD; 1912} ANFD;
497 1913
1914/* stores the pending event set for a given watcher */
498typedef struct 1915typedef struct
499{ 1916{
500 W w; 1917 W w;
501 int events; 1918 int events; /* the pending event set for the given watcher */
502} ANPENDING; 1919} ANPENDING;
503 1920
504#if EV_USE_INOTIFY 1921#if EV_USE_INOTIFY
505/* hash table entry per inotify-id */ 1922/* hash table entry per inotify-id */
506typedef struct 1923typedef struct
… …
509} ANFS; 1926} ANFS;
510#endif 1927#endif
511 1928
512/* Heap Entry */ 1929/* Heap Entry */
513#if EV_HEAP_CACHE_AT 1930#if EV_HEAP_CACHE_AT
1931 /* a heap element */
514 typedef struct { 1932 typedef struct {
515 ev_tstamp at; 1933 ev_tstamp at;
516 WT w; 1934 WT w;
517 } ANHE; 1935 } ANHE;
518 1936
519 #define ANHE_w(he) (he).w /* access watcher, read-write */ 1937 #define ANHE_w(he) (he).w /* access watcher, read-write */
520 #define ANHE_at(he) (he).at /* access cached at, read-only */ 1938 #define ANHE_at(he) (he).at /* access cached at, read-only */
521 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */ 1939 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
522#else 1940#else
1941 /* a heap element */
523 typedef WT ANHE; 1942 typedef WT ANHE;
524 1943
525 #define ANHE_w(he) (he) 1944 #define ANHE_w(he) (he)
526 #define ANHE_at(he) (he)->at 1945 #define ANHE_at(he) (he)->at
527 #define ANHE_at_cache(he) 1946 #define ANHE_at_cache(he)
… …
538 #undef VAR 1957 #undef VAR
539 }; 1958 };
540 #include "ev_wrap.h" 1959 #include "ev_wrap.h"
541 1960
542 static struct ev_loop default_loop_struct; 1961 static struct ev_loop default_loop_struct;
543 struct ev_loop *ev_default_loop_ptr; 1962 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
544 1963
545#else 1964#else
546 1965
547 ev_tstamp ev_rt_now; 1966 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
548 #define VAR(name,decl) static decl; 1967 #define VAR(name,decl) static decl;
549 #include "ev_vars.h" 1968 #include "ev_vars.h"
550 #undef VAR 1969 #undef VAR
551 1970
552 static int ev_default_loop_ptr; 1971 static int ev_default_loop_ptr;
553 1972
554#endif 1973#endif
555 1974
1975#if EV_FEATURE_API
1976# define EV_RELEASE_CB if (ecb_expect_false (release_cb)) release_cb (EV_A)
1977# define EV_ACQUIRE_CB if (ecb_expect_false (acquire_cb)) acquire_cb (EV_A)
1978# define EV_INVOKE_PENDING invoke_cb (EV_A)
1979#else
1980# define EV_RELEASE_CB (void)0
1981# define EV_ACQUIRE_CB (void)0
1982# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
1983#endif
1984
1985#define EVBREAK_RECURSE 0x80
1986
556/*****************************************************************************/ 1987/*****************************************************************************/
557 1988
1989#ifndef EV_HAVE_EV_TIME
558ev_tstamp 1990ev_tstamp
559ev_time (void) 1991ev_time (void) EV_NOEXCEPT
560{ 1992{
561#if EV_USE_REALTIME 1993#if EV_USE_REALTIME
562 if (expect_true (have_realtime)) 1994 if (ecb_expect_true (have_realtime))
563 { 1995 {
564 struct timespec ts; 1996 struct timespec ts;
565 clock_gettime (CLOCK_REALTIME, &ts); 1997 clock_gettime (CLOCK_REALTIME, &ts);
566 return ts.tv_sec + ts.tv_nsec * 1e-9; 1998 return ts.tv_sec + ts.tv_nsec * 1e-9;
567 } 1999 }
… …
569 2001
570 struct timeval tv; 2002 struct timeval tv;
571 gettimeofday (&tv, 0); 2003 gettimeofday (&tv, 0);
572 return tv.tv_sec + tv.tv_usec * 1e-6; 2004 return tv.tv_sec + tv.tv_usec * 1e-6;
573} 2005}
2006#endif
574 2007
575inline_size ev_tstamp 2008inline_size ev_tstamp
576get_clock (void) 2009get_clock (void)
577{ 2010{
578#if EV_USE_MONOTONIC 2011#if EV_USE_MONOTONIC
579 if (expect_true (have_monotonic)) 2012 if (ecb_expect_true (have_monotonic))
580 { 2013 {
581 struct timespec ts; 2014 struct timespec ts;
582 clock_gettime (CLOCK_MONOTONIC, &ts); 2015 clock_gettime (CLOCK_MONOTONIC, &ts);
583 return ts.tv_sec + ts.tv_nsec * 1e-9; 2016 return ts.tv_sec + ts.tv_nsec * 1e-9;
584 } 2017 }
… …
587 return ev_time (); 2020 return ev_time ();
588} 2021}
589 2022
590#if EV_MULTIPLICITY 2023#if EV_MULTIPLICITY
591ev_tstamp 2024ev_tstamp
592ev_now (EV_P) 2025ev_now (EV_P) EV_NOEXCEPT
593{ 2026{
594 return ev_rt_now; 2027 return ev_rt_now;
595} 2028}
596#endif 2029#endif
597 2030
598void 2031void
599ev_sleep (ev_tstamp delay) 2032ev_sleep (ev_tstamp delay) EV_NOEXCEPT
600{ 2033{
601 if (delay > 0.) 2034 if (delay > 0.)
602 { 2035 {
603#if EV_USE_NANOSLEEP 2036#if EV_USE_NANOSLEEP
604 struct timespec ts; 2037 struct timespec ts;
605 2038
606 ts.tv_sec = (time_t)delay; 2039 EV_TS_SET (ts, delay);
607 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
608
609 nanosleep (&ts, 0); 2040 nanosleep (&ts, 0);
610#elif defined(_WIN32) 2041#elif defined _WIN32
2042 /* maybe this should round up, as ms is very low resolution */
2043 /* compared to select (µs) or nanosleep (ns) */
611 Sleep ((unsigned long)(delay * 1e3)); 2044 Sleep ((unsigned long)(delay * 1e3));
612#else 2045#else
613 struct timeval tv; 2046 struct timeval tv;
614 2047
615 tv.tv_sec = (time_t)delay;
616 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
617
618 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 2048 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
619 /* somehting nto guaranteed by newer posix versions, but guaranteed */ 2049 /* something not guaranteed by newer posix versions, but guaranteed */
620 /* by older ones */ 2050 /* by older ones */
2051 EV_TV_SET (tv, delay);
621 select (0, 0, 0, 0, &tv); 2052 select (0, 0, 0, 0, &tv);
622#endif 2053#endif
623 } 2054 }
624} 2055}
625 2056
626/*****************************************************************************/ 2057/*****************************************************************************/
627 2058
628#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 2059#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
629 2060
2061/* find a suitable new size for the given array, */
2062/* hopefully by rounding to a nice-to-malloc size */
630inline_size int 2063inline_size int
631array_nextsize (int elem, int cur, int cnt) 2064array_nextsize (int elem, int cur, int cnt)
632{ 2065{
633 int ncur = cur + 1; 2066 int ncur = cur + 1;
634 2067
635 do 2068 do
636 ncur <<= 1; 2069 ncur <<= 1;
637 while (cnt > ncur); 2070 while (cnt > ncur);
638 2071
639 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 2072 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
640 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 2073 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
641 { 2074 {
642 ncur *= elem; 2075 ncur *= elem;
643 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 2076 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
644 ncur = ncur - sizeof (void *) * 4; 2077 ncur = ncur - sizeof (void *) * 4;
… …
646 } 2079 }
647 2080
648 return ncur; 2081 return ncur;
649} 2082}
650 2083
651static noinline void * 2084ecb_noinline ecb_cold
2085static void *
652array_realloc (int elem, void *base, int *cur, int cnt) 2086array_realloc (int elem, void *base, int *cur, int cnt)
653{ 2087{
654 *cur = array_nextsize (elem, *cur, cnt); 2088 *cur = array_nextsize (elem, *cur, cnt);
655 return ev_realloc (base, elem * *cur); 2089 return ev_realloc (base, elem * *cur);
656} 2090}
657 2091
2092#define array_needsize_noinit(base,offset,count)
2093
658#define array_init_zero(base,count) \ 2094#define array_needsize_zerofill(base,offset,count) \
659 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 2095 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
660 2096
661#define array_needsize(type,base,cur,cnt,init) \ 2097#define array_needsize(type,base,cur,cnt,init) \
662 if (expect_false ((cnt) > (cur))) \ 2098 if (ecb_expect_false ((cnt) > (cur))) \
663 { \ 2099 { \
664 int ocur_ = (cur); \ 2100 ecb_unused int ocur_ = (cur); \
665 (base) = (type *)array_realloc \ 2101 (base) = (type *)array_realloc \
666 (sizeof (type), (base), &(cur), (cnt)); \ 2102 (sizeof (type), (base), &(cur), (cnt)); \
667 init ((base) + (ocur_), (cur) - ocur_); \ 2103 init ((base), ocur_, ((cur) - ocur_)); \
668 } 2104 }
669 2105
670#if 0 2106#if 0
671#define array_slim(type,stem) \ 2107#define array_slim(type,stem) \
672 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2108 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
… …
680#define array_free(stem, idx) \ 2116#define array_free(stem, idx) \
681 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 2117 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
682 2118
683/*****************************************************************************/ 2119/*****************************************************************************/
684 2120
685void noinline 2121/* dummy callback for pending events */
2122ecb_noinline
2123static void
2124pendingcb (EV_P_ ev_prepare *w, int revents)
2125{
2126}
2127
2128ecb_noinline
2129void
686ev_feed_event (EV_P_ void *w, int revents) 2130ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
687{ 2131{
688 W w_ = (W)w; 2132 W w_ = (W)w;
689 int pri = ABSPRI (w_); 2133 int pri = ABSPRI (w_);
690 2134
691 if (expect_false (w_->pending)) 2135 if (ecb_expect_false (w_->pending))
692 pendings [pri][w_->pending - 1].events |= revents; 2136 pendings [pri][w_->pending - 1].events |= revents;
693 else 2137 else
694 { 2138 {
695 w_->pending = ++pendingcnt [pri]; 2139 w_->pending = ++pendingcnt [pri];
696 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2140 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
697 pendings [pri][w_->pending - 1].w = w_; 2141 pendings [pri][w_->pending - 1].w = w_;
698 pendings [pri][w_->pending - 1].events = revents; 2142 pendings [pri][w_->pending - 1].events = revents;
699 } 2143 }
2144
2145 pendingpri = NUMPRI - 1;
700} 2146}
701 2147
702inline_speed void 2148inline_speed void
703feed_reverse (EV_P_ W w) 2149feed_reverse (EV_P_ W w)
704{ 2150{
705 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2151 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
706 rfeeds [rfeedcnt++] = w; 2152 rfeeds [rfeedcnt++] = w;
707} 2153}
708 2154
709inline_size void 2155inline_size void
710feed_reverse_done (EV_P_ int revents) 2156feed_reverse_done (EV_P_ int revents)
… …
724} 2170}
725 2171
726/*****************************************************************************/ 2172/*****************************************************************************/
727 2173
728inline_speed void 2174inline_speed void
729fd_event (EV_P_ int fd, int revents) 2175fd_event_nocheck (EV_P_ int fd, int revents)
730{ 2176{
731 ANFD *anfd = anfds + fd; 2177 ANFD *anfd = anfds + fd;
732 ev_io *w; 2178 ev_io *w;
733 2179
734 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2180 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
738 if (ev) 2184 if (ev)
739 ev_feed_event (EV_A_ (W)w, ev); 2185 ev_feed_event (EV_A_ (W)w, ev);
740 } 2186 }
741} 2187}
742 2188
743void 2189/* do not submit kernel events for fds that have reify set */
2190/* because that means they changed while we were polling for new events */
2191inline_speed void
744ev_feed_fd_event (EV_P_ int fd, int revents) 2192fd_event (EV_P_ int fd, int revents)
2193{
2194 ANFD *anfd = anfds + fd;
2195
2196 if (ecb_expect_true (!anfd->reify))
2197 fd_event_nocheck (EV_A_ fd, revents);
2198}
2199
2200void
2201ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
745{ 2202{
746 if (fd >= 0 && fd < anfdmax) 2203 if (fd >= 0 && fd < anfdmax)
747 fd_event (EV_A_ fd, revents); 2204 fd_event_nocheck (EV_A_ fd, revents);
748} 2205}
749 2206
2207/* make sure the external fd watch events are in-sync */
2208/* with the kernel/libev internal state */
750inline_size void 2209inline_size void
751fd_reify (EV_P) 2210fd_reify (EV_P)
752{ 2211{
753 int i; 2212 int i;
2213
2214#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
2215 for (i = 0; i < fdchangecnt; ++i)
2216 {
2217 int fd = fdchanges [i];
2218 ANFD *anfd = anfds + fd;
2219
2220 if (anfd->reify & EV__IOFDSET && anfd->head)
2221 {
2222 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
2223
2224 if (handle != anfd->handle)
2225 {
2226 unsigned long arg;
2227
2228 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
2229
2230 /* handle changed, but fd didn't - we need to do it in two steps */
2231 backend_modify (EV_A_ fd, anfd->events, 0);
2232 anfd->events = 0;
2233 anfd->handle = handle;
2234 }
2235 }
2236 }
2237#endif
754 2238
755 for (i = 0; i < fdchangecnt; ++i) 2239 for (i = 0; i < fdchangecnt; ++i)
756 { 2240 {
757 int fd = fdchanges [i]; 2241 int fd = fdchanges [i];
758 ANFD *anfd = anfds + fd; 2242 ANFD *anfd = anfds + fd;
759 ev_io *w; 2243 ev_io *w;
760 2244
761 unsigned char events = 0; 2245 unsigned char o_events = anfd->events;
2246 unsigned char o_reify = anfd->reify;
762 2247
763 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2248 anfd->reify = 0;
764 events |= (unsigned char)w->events;
765 2249
766#if EV_SELECT_IS_WINSOCKET 2250 /*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
767 if (events)
768 { 2251 {
769 unsigned long arg; 2252 anfd->events = 0;
770 #ifdef EV_FD_TO_WIN32_HANDLE 2253
771 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 2254 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
772 #else 2255 anfd->events |= (unsigned char)w->events;
773 anfd->handle = _get_osfhandle (fd); 2256
774 #endif 2257 if (o_events != anfd->events)
775 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 2258 o_reify = EV__IOFDSET; /* actually |= */
776 } 2259 }
777#endif
778 2260
779 { 2261 if (o_reify & EV__IOFDSET)
780 unsigned char o_events = anfd->events;
781 unsigned char o_reify = anfd->reify;
782
783 anfd->reify = 0;
784 anfd->events = events;
785
786 if (o_events != events || o_reify & EV__IOFDSET)
787 backend_modify (EV_A_ fd, o_events, events); 2262 backend_modify (EV_A_ fd, o_events, anfd->events);
788 }
789 } 2263 }
790 2264
791 fdchangecnt = 0; 2265 fdchangecnt = 0;
792} 2266}
793 2267
2268/* something about the given fd changed */
794inline_size void 2269inline_size
2270void
795fd_change (EV_P_ int fd, int flags) 2271fd_change (EV_P_ int fd, int flags)
796{ 2272{
797 unsigned char reify = anfds [fd].reify; 2273 unsigned char reify = anfds [fd].reify;
798 anfds [fd].reify |= flags; 2274 anfds [fd].reify |= flags;
799 2275
800 if (expect_true (!reify)) 2276 if (ecb_expect_true (!reify))
801 { 2277 {
802 ++fdchangecnt; 2278 ++fdchangecnt;
803 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2279 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
804 fdchanges [fdchangecnt - 1] = fd; 2280 fdchanges [fdchangecnt - 1] = fd;
805 } 2281 }
806} 2282}
807 2283
2284/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
808inline_speed void 2285inline_speed ecb_cold void
809fd_kill (EV_P_ int fd) 2286fd_kill (EV_P_ int fd)
810{ 2287{
811 ev_io *w; 2288 ev_io *w;
812 2289
813 while ((w = (ev_io *)anfds [fd].head)) 2290 while ((w = (ev_io *)anfds [fd].head))
… …
815 ev_io_stop (EV_A_ w); 2292 ev_io_stop (EV_A_ w);
816 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2293 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
817 } 2294 }
818} 2295}
819 2296
2297/* check whether the given fd is actually valid, for error recovery */
820inline_size int 2298inline_size ecb_cold int
821fd_valid (int fd) 2299fd_valid (int fd)
822{ 2300{
823#ifdef _WIN32 2301#ifdef _WIN32
824 return _get_osfhandle (fd) != -1; 2302 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
825#else 2303#else
826 return fcntl (fd, F_GETFD) != -1; 2304 return fcntl (fd, F_GETFD) != -1;
827#endif 2305#endif
828} 2306}
829 2307
830/* called on EBADF to verify fds */ 2308/* called on EBADF to verify fds */
831static void noinline 2309ecb_noinline ecb_cold
2310static void
832fd_ebadf (EV_P) 2311fd_ebadf (EV_P)
833{ 2312{
834 int fd; 2313 int fd;
835 2314
836 for (fd = 0; fd < anfdmax; ++fd) 2315 for (fd = 0; fd < anfdmax; ++fd)
… …
838 if (!fd_valid (fd) && errno == EBADF) 2317 if (!fd_valid (fd) && errno == EBADF)
839 fd_kill (EV_A_ fd); 2318 fd_kill (EV_A_ fd);
840} 2319}
841 2320
842/* called on ENOMEM in select/poll to kill some fds and retry */ 2321/* called on ENOMEM in select/poll to kill some fds and retry */
843static void noinline 2322ecb_noinline ecb_cold
2323static void
844fd_enomem (EV_P) 2324fd_enomem (EV_P)
845{ 2325{
846 int fd; 2326 int fd;
847 2327
848 for (fd = anfdmax; fd--; ) 2328 for (fd = anfdmax; fd--; )
849 if (anfds [fd].events) 2329 if (anfds [fd].events)
850 { 2330 {
851 fd_kill (EV_A_ fd); 2331 fd_kill (EV_A_ fd);
852 return; 2332 break;
853 } 2333 }
854} 2334}
855 2335
856/* usually called after fork if backend needs to re-arm all fds from scratch */ 2336/* usually called after fork if backend needs to re-arm all fds from scratch */
857static void noinline 2337ecb_noinline
2338static void
858fd_rearm_all (EV_P) 2339fd_rearm_all (EV_P)
859{ 2340{
860 int fd; 2341 int fd;
861 2342
862 for (fd = 0; fd < anfdmax; ++fd) 2343 for (fd = 0; fd < anfdmax; ++fd)
863 if (anfds [fd].events) 2344 if (anfds [fd].events)
864 { 2345 {
865 anfds [fd].events = 0; 2346 anfds [fd].events = 0;
866 anfds [fd].emask = 0; 2347 anfds [fd].emask = 0;
867 fd_change (EV_A_ fd, EV__IOFDSET | 1); 2348 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
868 } 2349 }
869} 2350}
870 2351
2352/* used to prepare libev internal fd's */
2353/* this is not fork-safe */
2354inline_speed void
2355fd_intern (int fd)
2356{
2357#ifdef _WIN32
2358 unsigned long arg = 1;
2359 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
2360#else
2361 fcntl (fd, F_SETFD, FD_CLOEXEC);
2362 fcntl (fd, F_SETFL, O_NONBLOCK);
2363#endif
2364}
2365
871/*****************************************************************************/ 2366/*****************************************************************************/
872 2367
873/* 2368/*
874 * the heap functions want a real array index. array index 0 uis guaranteed to not 2369 * the heap functions want a real array index. array index 0 is guaranteed to not
875 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 2370 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
876 * the branching factor of the d-tree. 2371 * the branching factor of the d-tree.
877 */ 2372 */
878 2373
879/* 2374/*
… …
901 ev_tstamp minat; 2396 ev_tstamp minat;
902 ANHE *minpos; 2397 ANHE *minpos;
903 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; 2398 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
904 2399
905 /* find minimum child */ 2400 /* find minimum child */
906 if (expect_true (pos + DHEAP - 1 < E)) 2401 if (ecb_expect_true (pos + DHEAP - 1 < E))
907 { 2402 {
908 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2403 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
909 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2404 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
910 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2405 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
911 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2406 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
… …
947 2442
948 for (;;) 2443 for (;;)
949 { 2444 {
950 int c = k << 1; 2445 int c = k << 1;
951 2446
952 if (c > N + HEAP0 - 1) 2447 if (c >= N + HEAP0)
953 break; 2448 break;
954 2449
955 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 2450 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
956 ? 1 : 0; 2451 ? 1 : 0;
957 2452
… …
989 2484
990 heap [k] = he; 2485 heap [k] = he;
991 ev_active (ANHE_w (he)) = k; 2486 ev_active (ANHE_w (he)) = k;
992} 2487}
993 2488
2489/* move an element suitably so it is in a correct place */
994inline_size void 2490inline_size void
995adjustheap (ANHE *heap, int N, int k) 2491adjustheap (ANHE *heap, int N, int k)
996{ 2492{
997 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 2493 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
998 upheap (heap, k); 2494 upheap (heap, k);
999 else 2495 else
1000 downheap (heap, N, k); 2496 downheap (heap, N, k);
1001} 2497}
1002 2498
… …
1012 upheap (heap, i + HEAP0); 2508 upheap (heap, i + HEAP0);
1013} 2509}
1014 2510
1015/*****************************************************************************/ 2511/*****************************************************************************/
1016 2512
2513/* associate signal watchers to a signal signal */
1017typedef struct 2514typedef struct
1018{ 2515{
2516 EV_ATOMIC_T pending;
2517#if EV_MULTIPLICITY
2518 EV_P;
2519#endif
1019 WL head; 2520 WL head;
1020 EV_ATOMIC_T gotsig;
1021} ANSIG; 2521} ANSIG;
1022 2522
1023static ANSIG *signals; 2523static ANSIG signals [EV_NSIG - 1];
1024static int signalmax;
1025
1026static EV_ATOMIC_T gotsig;
1027 2524
1028/*****************************************************************************/ 2525/*****************************************************************************/
1029 2526
2527#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2528
2529ecb_noinline ecb_cold
2530static void
2531evpipe_init (EV_P)
2532{
2533 if (!ev_is_active (&pipe_w))
2534 {
2535 int fds [2];
2536
2537# if EV_USE_EVENTFD
2538 fds [0] = -1;
2539 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
2540 if (fds [1] < 0 && errno == EINVAL)
2541 fds [1] = eventfd (0, 0);
2542
2543 if (fds [1] < 0)
2544# endif
2545 {
2546 while (pipe (fds))
2547 ev_syserr ("(libev) error creating signal/async pipe");
2548
2549 fd_intern (fds [0]);
2550 }
2551
2552 evpipe [0] = fds [0];
2553
2554 if (evpipe [1] < 0)
2555 evpipe [1] = fds [1]; /* first call, set write fd */
2556 else
2557 {
2558 /* on subsequent calls, do not change evpipe [1] */
2559 /* so that evpipe_write can always rely on its value. */
2560 /* this branch does not do anything sensible on windows, */
2561 /* so must not be executed on windows */
2562
2563 dup2 (fds [1], evpipe [1]);
2564 close (fds [1]);
2565 }
2566
2567 fd_intern (evpipe [1]);
2568
2569 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2570 ev_io_start (EV_A_ &pipe_w);
2571 ev_unref (EV_A); /* watcher should not keep loop alive */
2572 }
2573}
2574
1030inline_speed void 2575inline_speed void
1031fd_intern (int fd) 2576evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1032{ 2577{
1033#ifdef _WIN32 2578 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1034 unsigned long arg = 1;
1035 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1036#else
1037 fcntl (fd, F_SETFD, FD_CLOEXEC);
1038 fcntl (fd, F_SETFL, O_NONBLOCK);
1039#endif
1040}
1041 2579
1042static void noinline 2580 if (ecb_expect_true (*flag))
1043evpipe_init (EV_P) 2581 return;
1044{ 2582
1045 if (!ev_is_active (&pipeev)) 2583 *flag = 1;
2584 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2585
2586 pipe_write_skipped = 1;
2587
2588 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2589
2590 if (pipe_write_wanted)
1046 { 2591 {
2592 int old_errno;
2593
2594 pipe_write_skipped = 0;
2595 ECB_MEMORY_FENCE_RELEASE;
2596
2597 old_errno = errno; /* save errno because write will clobber it */
2598
1047#if EV_USE_EVENTFD 2599#if EV_USE_EVENTFD
1048 if ((evfd = eventfd (0, 0)) >= 0) 2600 if (evpipe [0] < 0)
1049 { 2601 {
1050 evpipe [0] = -1; 2602 uint64_t counter = 1;
1051 fd_intern (evfd); 2603 write (evpipe [1], &counter, sizeof (uint64_t));
1052 ev_io_set (&pipeev, evfd, EV_READ);
1053 } 2604 }
1054 else 2605 else
1055#endif 2606#endif
1056 { 2607 {
1057 while (pipe (evpipe)) 2608#ifdef _WIN32
1058 ev_syserr ("(libev) error creating signal/async pipe"); 2609 WSABUF buf;
1059 2610 DWORD sent;
1060 fd_intern (evpipe [0]); 2611 buf.buf = (char *)&buf;
1061 fd_intern (evpipe [1]); 2612 buf.len = 1;
1062 ev_io_set (&pipeev, evpipe [0], EV_READ); 2613 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2614#else
2615 write (evpipe [1], &(evpipe [1]), 1);
2616#endif
1063 } 2617 }
1064 2618
1065 ev_io_start (EV_A_ &pipeev); 2619 errno = old_errno;
1066 ev_unref (EV_A); /* watcher should not keep loop alive */
1067 }
1068}
1069
1070inline_size void
1071evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1072{
1073 if (!*flag)
1074 { 2620 }
1075 int old_errno = errno; /* save errno because write might clobber it */ 2621}
1076 2622
1077 *flag = 1; 2623/* called whenever the libev signal pipe */
2624/* got some events (signal, async) */
2625static void
2626pipecb (EV_P_ ev_io *iow, int revents)
2627{
2628 int i;
1078 2629
2630 if (revents & EV_READ)
2631 {
1079#if EV_USE_EVENTFD 2632#if EV_USE_EVENTFD
1080 if (evfd >= 0) 2633 if (evpipe [0] < 0)
1081 { 2634 {
1082 uint64_t counter = 1; 2635 uint64_t counter;
1083 write (evfd, &counter, sizeof (uint64_t)); 2636 read (evpipe [1], &counter, sizeof (uint64_t));
1084 } 2637 }
1085 else 2638 else
1086#endif 2639#endif
1087 write (evpipe [1], &old_errno, 1); 2640 {
1088
1089 errno = old_errno;
1090 }
1091}
1092
1093static void
1094pipecb (EV_P_ ev_io *iow, int revents)
1095{
1096#if EV_USE_EVENTFD
1097 if (evfd >= 0)
1098 {
1099 uint64_t counter;
1100 read (evfd, &counter, sizeof (uint64_t));
1101 }
1102 else
1103#endif
1104 {
1105 char dummy; 2641 char dummy[4];
2642#ifdef _WIN32
2643 WSABUF buf;
2644 DWORD recvd;
2645 DWORD flags = 0;
2646 buf.buf = dummy;
2647 buf.len = sizeof (dummy);
2648 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2649#else
1106 read (evpipe [0], &dummy, 1); 2650 read (evpipe [0], &dummy, sizeof (dummy));
2651#endif
2652 }
2653 }
2654
2655 pipe_write_skipped = 0;
2656
2657 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2658
2659#if EV_SIGNAL_ENABLE
2660 if (sig_pending)
1107 } 2661 {
2662 sig_pending = 0;
1108 2663
1109 if (gotsig && ev_is_default_loop (EV_A)) 2664 ECB_MEMORY_FENCE;
1110 {
1111 int signum;
1112 gotsig = 0;
1113 2665
1114 for (signum = signalmax; signum--; ) 2666 for (i = EV_NSIG - 1; i--; )
1115 if (signals [signum].gotsig) 2667 if (ecb_expect_false (signals [i].pending))
1116 ev_feed_signal_event (EV_A_ signum + 1); 2668 ev_feed_signal_event (EV_A_ i + 1);
1117 } 2669 }
2670#endif
1118 2671
1119#if EV_ASYNC_ENABLE 2672#if EV_ASYNC_ENABLE
1120 if (gotasync) 2673 if (async_pending)
1121 { 2674 {
1122 int i; 2675 async_pending = 0;
1123 gotasync = 0; 2676
2677 ECB_MEMORY_FENCE;
1124 2678
1125 for (i = asynccnt; i--; ) 2679 for (i = asynccnt; i--; )
1126 if (asyncs [i]->sent) 2680 if (asyncs [i]->sent)
1127 { 2681 {
1128 asyncs [i]->sent = 0; 2682 asyncs [i]->sent = 0;
2683 ECB_MEMORY_FENCE_RELEASE;
1129 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2684 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1130 } 2685 }
1131 } 2686 }
1132#endif 2687#endif
1133} 2688}
1134 2689
1135/*****************************************************************************/ 2690/*****************************************************************************/
1136 2691
2692void
2693ev_feed_signal (int signum) EV_NOEXCEPT
2694{
2695#if EV_MULTIPLICITY
2696 EV_P;
2697 ECB_MEMORY_FENCE_ACQUIRE;
2698 EV_A = signals [signum - 1].loop;
2699
2700 if (!EV_A)
2701 return;
2702#endif
2703
2704 signals [signum - 1].pending = 1;
2705 evpipe_write (EV_A_ &sig_pending);
2706}
2707
1137static void 2708static void
1138ev_sighandler (int signum) 2709ev_sighandler (int signum)
1139{ 2710{
2711#ifdef _WIN32
2712 signal (signum, ev_sighandler);
2713#endif
2714
2715 ev_feed_signal (signum);
2716}
2717
2718ecb_noinline
2719void
2720ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
2721{
2722 WL w;
2723
2724 if (ecb_expect_false (signum <= 0 || signum >= EV_NSIG))
2725 return;
2726
2727 --signum;
2728
1140#if EV_MULTIPLICITY 2729#if EV_MULTIPLICITY
1141 struct ev_loop *loop = &default_loop_struct; 2730 /* it is permissible to try to feed a signal to the wrong loop */
1142#endif 2731 /* or, likely more useful, feeding a signal nobody is waiting for */
1143 2732
1144#if _WIN32 2733 if (ecb_expect_false (signals [signum].loop != EV_A))
1145 signal (signum, ev_sighandler);
1146#endif
1147
1148 signals [signum - 1].gotsig = 1;
1149 evpipe_write (EV_A_ &gotsig);
1150}
1151
1152void noinline
1153ev_feed_signal_event (EV_P_ int signum)
1154{
1155 WL w;
1156
1157#if EV_MULTIPLICITY
1158 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1159#endif
1160
1161 --signum;
1162
1163 if (signum < 0 || signum >= signalmax)
1164 return; 2734 return;
2735#endif
1165 2736
1166 signals [signum].gotsig = 0; 2737 signals [signum].pending = 0;
2738 ECB_MEMORY_FENCE_RELEASE;
1167 2739
1168 for (w = signals [signum].head; w; w = w->next) 2740 for (w = signals [signum].head; w; w = w->next)
1169 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2741 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1170} 2742}
1171 2743
2744#if EV_USE_SIGNALFD
2745static void
2746sigfdcb (EV_P_ ev_io *iow, int revents)
2747{
2748 struct signalfd_siginfo si[2], *sip; /* these structs are big */
2749
2750 for (;;)
2751 {
2752 ssize_t res = read (sigfd, si, sizeof (si));
2753
2754 /* not ISO-C, as res might be -1, but works with SuS */
2755 for (sip = si; (char *)sip < (char *)si + res; ++sip)
2756 ev_feed_signal_event (EV_A_ sip->ssi_signo);
2757
2758 if (res < (ssize_t)sizeof (si))
2759 break;
2760 }
2761}
2762#endif
2763
2764#endif
2765
1172/*****************************************************************************/ 2766/*****************************************************************************/
1173 2767
2768#if EV_CHILD_ENABLE
1174static WL childs [EV_PID_HASHSIZE]; 2769static WL childs [EV_PID_HASHSIZE];
1175
1176#ifndef _WIN32
1177 2770
1178static ev_signal childev; 2771static ev_signal childev;
1179 2772
1180#ifndef WIFCONTINUED 2773#ifndef WIFCONTINUED
1181# define WIFCONTINUED(status) 0 2774# define WIFCONTINUED(status) 0
1182#endif 2775#endif
1183 2776
2777/* handle a single child status event */
1184inline_speed void 2778inline_speed void
1185child_reap (EV_P_ int chain, int pid, int status) 2779child_reap (EV_P_ int chain, int pid, int status)
1186{ 2780{
1187 ev_child *w; 2781 ev_child *w;
1188 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2782 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1189 2783
1190 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2784 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1191 { 2785 {
1192 if ((w->pid == pid || !w->pid) 2786 if ((w->pid == pid || !w->pid)
1193 && (!traced || (w->flags & 1))) 2787 && (!traced || (w->flags & 1)))
1194 { 2788 {
1195 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2789 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1202 2796
1203#ifndef WCONTINUED 2797#ifndef WCONTINUED
1204# define WCONTINUED 0 2798# define WCONTINUED 0
1205#endif 2799#endif
1206 2800
2801/* called on sigchld etc., calls waitpid */
1207static void 2802static void
1208childcb (EV_P_ ev_signal *sw, int revents) 2803childcb (EV_P_ ev_signal *sw, int revents)
1209{ 2804{
1210 int pid, status; 2805 int pid, status;
1211 2806
… …
1219 /* make sure we are called again until all children have been reaped */ 2814 /* make sure we are called again until all children have been reaped */
1220 /* we need to do it this way so that the callback gets called before we continue */ 2815 /* we need to do it this way so that the callback gets called before we continue */
1221 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2816 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1222 2817
1223 child_reap (EV_A_ pid, pid, status); 2818 child_reap (EV_A_ pid, pid, status);
1224 if (EV_PID_HASHSIZE > 1) 2819 if ((EV_PID_HASHSIZE) > 1)
1225 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2820 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1226} 2821}
1227 2822
1228#endif 2823#endif
1229 2824
1230/*****************************************************************************/ 2825/*****************************************************************************/
1231 2826
2827#if EV_USE_IOCP
2828# include "ev_iocp.c"
2829#endif
1232#if EV_USE_PORT 2830#if EV_USE_PORT
1233# include "ev_port.c" 2831# include "ev_port.c"
1234#endif 2832#endif
1235#if EV_USE_KQUEUE 2833#if EV_USE_KQUEUE
1236# include "ev_kqueue.c" 2834# include "ev_kqueue.c"
1237#endif 2835#endif
1238#if EV_USE_EPOLL 2836#if EV_USE_EPOLL
1239# include "ev_epoll.c" 2837# include "ev_epoll.c"
1240#endif 2838#endif
2839#if EV_USE_LINUXAIO
2840# include "ev_linuxaio.c"
2841#endif
2842#if EV_USE_IOURING
2843# include "ev_iouring.c"
2844#endif
1241#if EV_USE_POLL 2845#if EV_USE_POLL
1242# include "ev_poll.c" 2846# include "ev_poll.c"
1243#endif 2847#endif
1244#if EV_USE_SELECT 2848#if EV_USE_SELECT
1245# include "ev_select.c" 2849# include "ev_select.c"
1246#endif 2850#endif
1247 2851
1248int 2852ecb_cold int
1249ev_version_major (void) 2853ev_version_major (void) EV_NOEXCEPT
1250{ 2854{
1251 return EV_VERSION_MAJOR; 2855 return EV_VERSION_MAJOR;
1252} 2856}
1253 2857
1254int 2858ecb_cold int
1255ev_version_minor (void) 2859ev_version_minor (void) EV_NOEXCEPT
1256{ 2860{
1257 return EV_VERSION_MINOR; 2861 return EV_VERSION_MINOR;
1258} 2862}
1259 2863
1260/* return true if we are running with elevated privileges and should ignore env variables */ 2864/* return true if we are running with elevated privileges and should ignore env variables */
1261int inline_size 2865inline_size ecb_cold int
1262enable_secure (void) 2866enable_secure (void)
1263{ 2867{
1264#ifdef _WIN32 2868#ifdef _WIN32
1265 return 0; 2869 return 0;
1266#else 2870#else
1267 return getuid () != geteuid () 2871 return getuid () != geteuid ()
1268 || getgid () != getegid (); 2872 || getgid () != getegid ();
1269#endif 2873#endif
1270} 2874}
1271 2875
2876ecb_cold
1272unsigned int 2877unsigned int
1273ev_supported_backends (void) 2878ev_supported_backends (void) EV_NOEXCEPT
1274{ 2879{
1275 unsigned int flags = 0; 2880 unsigned int flags = 0;
1276 2881
1277 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2882 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1278 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2883 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
1279 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 2884 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2885 if (EV_USE_LINUXAIO) flags |= EVBACKEND_LINUXAIO;
2886 if (EV_USE_IOURING ) flags |= EVBACKEND_IOURING;
1280 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 2887 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
1281 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2888 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
1282 2889
1283 return flags; 2890 return flags;
1284} 2891}
1285 2892
2893ecb_cold
1286unsigned int 2894unsigned int
1287ev_recommended_backends (void) 2895ev_recommended_backends (void) EV_NOEXCEPT
1288{ 2896{
1289 unsigned int flags = ev_supported_backends (); 2897 unsigned int flags = ev_supported_backends ();
1290 2898
1291#ifndef __NetBSD__ 2899#ifndef __NetBSD__
1292 /* kqueue is borked on everything but netbsd apparently */ 2900 /* kqueue is borked on everything but netbsd apparently */
… …
1296#ifdef __APPLE__ 2904#ifdef __APPLE__
1297 /* only select works correctly on that "unix-certified" platform */ 2905 /* only select works correctly on that "unix-certified" platform */
1298 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2906 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1299 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 2907 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1300#endif 2908#endif
2909#ifdef __FreeBSD__
2910 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2911#endif
2912
2913 /* TODO: linuxaio is very experimental */
2914#if !EV_RECOMMEND_LINUXAIO
2915 flags &= ~EVBACKEND_LINUXAIO;
2916#endif
2917 /* TODO: linuxaio is super experimental */
2918#if !EV_RECOMMEND_IOURING
2919 flags &= ~EVBACKEND_IOURING;
2920#endif
1301 2921
1302 return flags; 2922 return flags;
1303} 2923}
1304 2924
2925ecb_cold
1305unsigned int 2926unsigned int
1306ev_embeddable_backends (void) 2927ev_embeddable_backends (void) EV_NOEXCEPT
1307{ 2928{
1308 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2929 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1309 2930
1310 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2931 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1311 /* please fix it and tell me how to detect the fix */ 2932 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1312 flags &= ~EVBACKEND_EPOLL; 2933 flags &= ~EVBACKEND_EPOLL;
2934
2935 /* EVBACKEND_LINUXAIO is theoretically embeddable, but suffers from a performance overhead */
2936
2937 /* EVBACKEND_IOURING is practically embeddable, but the current implementation is not
2938 * because our backend_fd is the epoll fd we need as fallback.
2939 * if the kernel ever is fixed, this might change...
2940 */
1313 2941
1314 return flags; 2942 return flags;
1315} 2943}
1316 2944
1317unsigned int 2945unsigned int
1318ev_backend (EV_P) 2946ev_backend (EV_P) EV_NOEXCEPT
1319{ 2947{
1320 return backend; 2948 return backend;
1321} 2949}
1322 2950
2951#if EV_FEATURE_API
1323unsigned int 2952unsigned int
1324ev_loop_count (EV_P) 2953ev_iteration (EV_P) EV_NOEXCEPT
1325{ 2954{
1326 return loop_count; 2955 return loop_count;
1327} 2956}
1328 2957
2958unsigned int
2959ev_depth (EV_P) EV_NOEXCEPT
2960{
2961 return loop_depth;
2962}
2963
1329void 2964void
1330ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2965ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1331{ 2966{
1332 io_blocktime = interval; 2967 io_blocktime = interval;
1333} 2968}
1334 2969
1335void 2970void
1336ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2971ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1337{ 2972{
1338 timeout_blocktime = interval; 2973 timeout_blocktime = interval;
1339} 2974}
1340 2975
1341static void noinline 2976void
2977ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
2978{
2979 userdata = data;
2980}
2981
2982void *
2983ev_userdata (EV_P) EV_NOEXCEPT
2984{
2985 return userdata;
2986}
2987
2988void
2989ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
2990{
2991 invoke_cb = invoke_pending_cb;
2992}
2993
2994void
2995ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
2996{
2997 release_cb = release;
2998 acquire_cb = acquire;
2999}
3000#endif
3001
3002/* initialise a loop structure, must be zero-initialised */
3003ecb_noinline ecb_cold
3004static void
1342loop_init (EV_P_ unsigned int flags) 3005loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
1343{ 3006{
1344 if (!backend) 3007 if (!backend)
1345 { 3008 {
3009 origflags = flags;
3010
1346#if EV_USE_REALTIME 3011#if EV_USE_REALTIME
1347 if (!have_realtime) 3012 if (!have_realtime)
1348 { 3013 {
1349 struct timespec ts; 3014 struct timespec ts;
1350 3015
… …
1361 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 3026 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1362 have_monotonic = 1; 3027 have_monotonic = 1;
1363 } 3028 }
1364#endif 3029#endif
1365 3030
1366 ev_rt_now = ev_time ();
1367 mn_now = get_clock ();
1368 now_floor = mn_now;
1369 rtmn_diff = ev_rt_now - mn_now;
1370
1371 io_blocktime = 0.;
1372 timeout_blocktime = 0.;
1373 backend = 0;
1374 backend_fd = -1;
1375 gotasync = 0;
1376#if EV_USE_INOTIFY
1377 fs_fd = -2;
1378#endif
1379
1380 /* pid check not overridable via env */ 3031 /* pid check not overridable via env */
1381#ifndef _WIN32 3032#ifndef _WIN32
1382 if (flags & EVFLAG_FORKCHECK) 3033 if (flags & EVFLAG_FORKCHECK)
1383 curpid = getpid (); 3034 curpid = getpid ();
1384#endif 3035#endif
… …
1386 if (!(flags & EVFLAG_NOENV) 3037 if (!(flags & EVFLAG_NOENV)
1387 && !enable_secure () 3038 && !enable_secure ()
1388 && getenv ("LIBEV_FLAGS")) 3039 && getenv ("LIBEV_FLAGS"))
1389 flags = atoi (getenv ("LIBEV_FLAGS")); 3040 flags = atoi (getenv ("LIBEV_FLAGS"));
1390 3041
1391 if (!(flags & 0x0000ffffU)) 3042 ev_rt_now = ev_time ();
3043 mn_now = get_clock ();
3044 now_floor = mn_now;
3045 rtmn_diff = ev_rt_now - mn_now;
3046#if EV_FEATURE_API
3047 invoke_cb = ev_invoke_pending;
3048#endif
3049
3050 io_blocktime = 0.;
3051 timeout_blocktime = 0.;
3052 backend = 0;
3053 backend_fd = -1;
3054 sig_pending = 0;
3055#if EV_ASYNC_ENABLE
3056 async_pending = 0;
3057#endif
3058 pipe_write_skipped = 0;
3059 pipe_write_wanted = 0;
3060 evpipe [0] = -1;
3061 evpipe [1] = -1;
3062#if EV_USE_INOTIFY
3063 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
3064#endif
3065#if EV_USE_SIGNALFD
3066 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
3067#endif
3068
3069 if (!(flags & EVBACKEND_MASK))
1392 flags |= ev_recommended_backends (); 3070 flags |= ev_recommended_backends ();
1393 3071
3072#if EV_USE_IOCP
3073 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
3074#endif
1394#if EV_USE_PORT 3075#if EV_USE_PORT
1395 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 3076 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1396#endif 3077#endif
1397#if EV_USE_KQUEUE 3078#if EV_USE_KQUEUE
1398 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 3079 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
3080#endif
3081#if EV_USE_IOURING
3082 if (!backend && (flags & EVBACKEND_IOURING )) backend = iouring_init (EV_A_ flags);
3083#endif
3084#if EV_USE_LINUXAIO
3085 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
1399#endif 3086#endif
1400#if EV_USE_EPOLL 3087#if EV_USE_EPOLL
1401 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 3088 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
1402#endif 3089#endif
1403#if EV_USE_POLL 3090#if EV_USE_POLL
1404 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 3091 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
1405#endif 3092#endif
1406#if EV_USE_SELECT 3093#if EV_USE_SELECT
1407 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 3094 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
1408#endif 3095#endif
1409 3096
3097 ev_prepare_init (&pending_w, pendingcb);
3098
3099#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1410 ev_init (&pipeev, pipecb); 3100 ev_init (&pipe_w, pipecb);
1411 ev_set_priority (&pipeev, EV_MAXPRI); 3101 ev_set_priority (&pipe_w, EV_MAXPRI);
3102#endif
1412 } 3103 }
1413} 3104}
1414 3105
1415static void noinline 3106/* free up a loop structure */
3107ecb_cold
3108void
1416loop_destroy (EV_P) 3109ev_loop_destroy (EV_P)
1417{ 3110{
1418 int i; 3111 int i;
1419 3112
3113#if EV_MULTIPLICITY
3114 /* mimic free (0) */
3115 if (!EV_A)
3116 return;
3117#endif
3118
3119#if EV_CLEANUP_ENABLE
3120 /* queue cleanup watchers (and execute them) */
3121 if (ecb_expect_false (cleanupcnt))
3122 {
3123 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
3124 EV_INVOKE_PENDING;
3125 }
3126#endif
3127
3128#if EV_CHILD_ENABLE
3129 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
3130 {
3131 ev_ref (EV_A); /* child watcher */
3132 ev_signal_stop (EV_A_ &childev);
3133 }
3134#endif
3135
1420 if (ev_is_active (&pipeev)) 3136 if (ev_is_active (&pipe_w))
1421 { 3137 {
1422 ev_ref (EV_A); /* signal watcher */ 3138 /*ev_ref (EV_A);*/
1423 ev_io_stop (EV_A_ &pipeev); 3139 /*ev_io_stop (EV_A_ &pipe_w);*/
1424 3140
3141 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
3142 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
3143 }
3144
1425#if EV_USE_EVENTFD 3145#if EV_USE_SIGNALFD
1426 if (evfd >= 0) 3146 if (ev_is_active (&sigfd_w))
1427 close (evfd); 3147 close (sigfd);
1428#endif 3148#endif
1429
1430 if (evpipe [0] >= 0)
1431 {
1432 close (evpipe [0]);
1433 close (evpipe [1]);
1434 }
1435 }
1436 3149
1437#if EV_USE_INOTIFY 3150#if EV_USE_INOTIFY
1438 if (fs_fd >= 0) 3151 if (fs_fd >= 0)
1439 close (fs_fd); 3152 close (fs_fd);
1440#endif 3153#endif
1441 3154
1442 if (backend_fd >= 0) 3155 if (backend_fd >= 0)
1443 close (backend_fd); 3156 close (backend_fd);
1444 3157
3158#if EV_USE_IOCP
3159 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
3160#endif
1445#if EV_USE_PORT 3161#if EV_USE_PORT
1446 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3162 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1447#endif 3163#endif
1448#if EV_USE_KQUEUE 3164#if EV_USE_KQUEUE
1449 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3165 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
3166#endif
3167#if EV_USE_IOURING
3168 if (backend == EVBACKEND_IOURING ) iouring_destroy (EV_A);
3169#endif
3170#if EV_USE_LINUXAIO
3171 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
1450#endif 3172#endif
1451#if EV_USE_EPOLL 3173#if EV_USE_EPOLL
1452 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3174 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
1453#endif 3175#endif
1454#if EV_USE_POLL 3176#if EV_USE_POLL
1455 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3177 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
1456#endif 3178#endif
1457#if EV_USE_SELECT 3179#if EV_USE_SELECT
1458 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3180 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
1459#endif 3181#endif
1460 3182
1461 for (i = NUMPRI; i--; ) 3183 for (i = NUMPRI; i--; )
1462 { 3184 {
1463 array_free (pending, [i]); 3185 array_free (pending, [i]);
1464#if EV_IDLE_ENABLE 3186#if EV_IDLE_ENABLE
1465 array_free (idle, [i]); 3187 array_free (idle, [i]);
1466#endif 3188#endif
1467 } 3189 }
1468 3190
1469 ev_free (anfds); anfdmax = 0; 3191 ev_free (anfds); anfds = 0; anfdmax = 0;
1470 3192
1471 /* have to use the microsoft-never-gets-it-right macro */ 3193 /* have to use the microsoft-never-gets-it-right macro */
1472 array_free (rfeed, EMPTY); 3194 array_free (rfeed, EMPTY);
1473 array_free (fdchange, EMPTY); 3195 array_free (fdchange, EMPTY);
1474 array_free (timer, EMPTY); 3196 array_free (timer, EMPTY);
… …
1476 array_free (periodic, EMPTY); 3198 array_free (periodic, EMPTY);
1477#endif 3199#endif
1478#if EV_FORK_ENABLE 3200#if EV_FORK_ENABLE
1479 array_free (fork, EMPTY); 3201 array_free (fork, EMPTY);
1480#endif 3202#endif
3203#if EV_CLEANUP_ENABLE
3204 array_free (cleanup, EMPTY);
3205#endif
1481 array_free (prepare, EMPTY); 3206 array_free (prepare, EMPTY);
1482 array_free (check, EMPTY); 3207 array_free (check, EMPTY);
1483#if EV_ASYNC_ENABLE 3208#if EV_ASYNC_ENABLE
1484 array_free (async, EMPTY); 3209 array_free (async, EMPTY);
1485#endif 3210#endif
1486 3211
1487 backend = 0; 3212 backend = 0;
3213
3214#if EV_MULTIPLICITY
3215 if (ev_is_default_loop (EV_A))
3216#endif
3217 ev_default_loop_ptr = 0;
3218#if EV_MULTIPLICITY
3219 else
3220 ev_free (EV_A);
3221#endif
1488} 3222}
1489 3223
1490#if EV_USE_INOTIFY 3224#if EV_USE_INOTIFY
1491inline_size void infy_fork (EV_P); 3225inline_size void infy_fork (EV_P);
1492#endif 3226#endif
1493 3227
1494inline_size void 3228inline_size void
1495loop_fork (EV_P) 3229loop_fork (EV_P)
1496{ 3230{
1497#if EV_USE_PORT 3231#if EV_USE_PORT
1498 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3232 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1499#endif 3233#endif
1500#if EV_USE_KQUEUE 3234#if EV_USE_KQUEUE
1501 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 3235 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
3236#endif
3237#if EV_USE_IOURING
3238 if (backend == EVBACKEND_IOURING ) iouring_fork (EV_A);
3239#endif
3240#if EV_USE_LINUXAIO
3241 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
1502#endif 3242#endif
1503#if EV_USE_EPOLL 3243#if EV_USE_EPOLL
1504 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3244 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
1505#endif 3245#endif
1506#if EV_USE_INOTIFY 3246#if EV_USE_INOTIFY
1507 infy_fork (EV_A); 3247 infy_fork (EV_A);
1508#endif 3248#endif
1509 3249
1510 if (ev_is_active (&pipeev)) 3250#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
3251 if (ev_is_active (&pipe_w) && postfork != 2)
1511 { 3252 {
1512 /* this "locks" the handlers against writing to the pipe */ 3253 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1513 /* while we modify the fd vars */
1514 gotsig = 1;
1515#if EV_ASYNC_ENABLE
1516 gotasync = 1;
1517#endif
1518 3254
1519 ev_ref (EV_A); 3255 ev_ref (EV_A);
1520 ev_io_stop (EV_A_ &pipeev); 3256 ev_io_stop (EV_A_ &pipe_w);
1521
1522#if EV_USE_EVENTFD
1523 if (evfd >= 0)
1524 close (evfd);
1525#endif
1526 3257
1527 if (evpipe [0] >= 0) 3258 if (evpipe [0] >= 0)
1528 { 3259 EV_WIN32_CLOSE_FD (evpipe [0]);
1529 close (evpipe [0]);
1530 close (evpipe [1]);
1531 }
1532 3260
1533 evpipe_init (EV_A); 3261 evpipe_init (EV_A);
1534 /* now iterate over everything, in case we missed something */ 3262 /* iterate over everything, in case we missed something before */
1535 pipecb (EV_A_ &pipeev, EV_READ); 3263 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1536 } 3264 }
3265#endif
1537 3266
1538 postfork = 0; 3267 postfork = 0;
1539} 3268}
1540 3269
1541#if EV_MULTIPLICITY 3270#if EV_MULTIPLICITY
1542 3271
3272ecb_cold
1543struct ev_loop * 3273struct ev_loop *
1544ev_loop_new (unsigned int flags) 3274ev_loop_new (unsigned int flags) EV_NOEXCEPT
1545{ 3275{
1546 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3276 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1547 3277
1548 memset (loop, 0, sizeof (struct ev_loop)); 3278 memset (EV_A, 0, sizeof (struct ev_loop));
1549
1550 loop_init (EV_A_ flags); 3279 loop_init (EV_A_ flags);
1551 3280
1552 if (ev_backend (EV_A)) 3281 if (ev_backend (EV_A))
1553 return loop; 3282 return EV_A;
1554 3283
3284 ev_free (EV_A);
1555 return 0; 3285 return 0;
1556} 3286}
1557 3287
1558void 3288#endif /* multiplicity */
1559ev_loop_destroy (EV_P)
1560{
1561 loop_destroy (EV_A);
1562 ev_free (loop);
1563}
1564
1565void
1566ev_loop_fork (EV_P)
1567{
1568 postfork = 1; /* must be in line with ev_default_fork */
1569}
1570 3289
1571#if EV_VERIFY 3290#if EV_VERIFY
1572static void noinline 3291ecb_noinline ecb_cold
3292static void
1573verify_watcher (EV_P_ W w) 3293verify_watcher (EV_P_ W w)
1574{ 3294{
1575 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3295 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1576 3296
1577 if (w->pending) 3297 if (w->pending)
1578 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3298 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1579} 3299}
1580 3300
1581static void noinline 3301ecb_noinline ecb_cold
3302static void
1582verify_heap (EV_P_ ANHE *heap, int N) 3303verify_heap (EV_P_ ANHE *heap, int N)
1583{ 3304{
1584 int i; 3305 int i;
1585 3306
1586 for (i = HEAP0; i < N + HEAP0; ++i) 3307 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1591 3312
1592 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3313 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1593 } 3314 }
1594} 3315}
1595 3316
1596static void noinline 3317ecb_noinline ecb_cold
3318static void
1597array_verify (EV_P_ W *ws, int cnt) 3319array_verify (EV_P_ W *ws, int cnt)
1598{ 3320{
1599 while (cnt--) 3321 while (cnt--)
1600 { 3322 {
1601 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3323 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1602 verify_watcher (EV_A_ ws [cnt]); 3324 verify_watcher (EV_A_ ws [cnt]);
1603 } 3325 }
1604} 3326}
1605#endif 3327#endif
1606 3328
1607void 3329#if EV_FEATURE_API
1608ev_loop_verify (EV_P) 3330void ecb_cold
3331ev_verify (EV_P) EV_NOEXCEPT
1609{ 3332{
1610#if EV_VERIFY 3333#if EV_VERIFY
1611 int i; 3334 int i;
1612 WL w; 3335 WL w, w2;
1613 3336
1614 assert (activecnt >= -1); 3337 assert (activecnt >= -1);
1615 3338
1616 assert (fdchangemax >= fdchangecnt); 3339 assert (fdchangemax >= fdchangecnt);
1617 for (i = 0; i < fdchangecnt; ++i) 3340 for (i = 0; i < fdchangecnt; ++i)
1618 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3341 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1619 3342
1620 assert (anfdmax >= 0); 3343 assert (anfdmax >= 0);
1621 for (i = 0; i < anfdmax; ++i) 3344 for (i = 0; i < anfdmax; ++i)
3345 {
3346 int j = 0;
3347
1622 for (w = anfds [i].head; w; w = w->next) 3348 for (w = w2 = anfds [i].head; w; w = w->next)
1623 { 3349 {
1624 verify_watcher (EV_A_ (W)w); 3350 verify_watcher (EV_A_ (W)w);
3351
3352 if (j++ & 1)
3353 {
3354 assert (("libev: io watcher list contains a loop", w != w2));
3355 w2 = w2->next;
3356 }
3357
1625 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3358 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1626 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 3359 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1627 } 3360 }
3361 }
1628 3362
1629 assert (timermax >= timercnt); 3363 assert (timermax >= timercnt);
1630 verify_heap (EV_A_ timers, timercnt); 3364 verify_heap (EV_A_ timers, timercnt);
1631 3365
1632#if EV_PERIODIC_ENABLE 3366#if EV_PERIODIC_ENABLE
… …
1647#if EV_FORK_ENABLE 3381#if EV_FORK_ENABLE
1648 assert (forkmax >= forkcnt); 3382 assert (forkmax >= forkcnt);
1649 array_verify (EV_A_ (W *)forks, forkcnt); 3383 array_verify (EV_A_ (W *)forks, forkcnt);
1650#endif 3384#endif
1651 3385
3386#if EV_CLEANUP_ENABLE
3387 assert (cleanupmax >= cleanupcnt);
3388 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
3389#endif
3390
1652#if EV_ASYNC_ENABLE 3391#if EV_ASYNC_ENABLE
1653 assert (asyncmax >= asynccnt); 3392 assert (asyncmax >= asynccnt);
1654 array_verify (EV_A_ (W *)asyncs, asynccnt); 3393 array_verify (EV_A_ (W *)asyncs, asynccnt);
1655#endif 3394#endif
1656 3395
3396#if EV_PREPARE_ENABLE
1657 assert (preparemax >= preparecnt); 3397 assert (preparemax >= preparecnt);
1658 array_verify (EV_A_ (W *)prepares, preparecnt); 3398 array_verify (EV_A_ (W *)prepares, preparecnt);
3399#endif
1659 3400
3401#if EV_CHECK_ENABLE
1660 assert (checkmax >= checkcnt); 3402 assert (checkmax >= checkcnt);
1661 array_verify (EV_A_ (W *)checks, checkcnt); 3403 array_verify (EV_A_ (W *)checks, checkcnt);
3404#endif
1662 3405
1663# if 0 3406# if 0
3407#if EV_CHILD_ENABLE
1664 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 3408 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1665 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 3409 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
3410#endif
1666# endif 3411# endif
1667#endif 3412#endif
1668} 3413}
1669 3414#endif
1670#endif /* multiplicity */
1671 3415
1672#if EV_MULTIPLICITY 3416#if EV_MULTIPLICITY
3417ecb_cold
1673struct ev_loop * 3418struct ev_loop *
1674ev_default_loop_init (unsigned int flags)
1675#else 3419#else
1676int 3420int
3421#endif
1677ev_default_loop (unsigned int flags) 3422ev_default_loop (unsigned int flags) EV_NOEXCEPT
1678#endif
1679{ 3423{
1680 if (!ev_default_loop_ptr) 3424 if (!ev_default_loop_ptr)
1681 { 3425 {
1682#if EV_MULTIPLICITY 3426#if EV_MULTIPLICITY
1683 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 3427 EV_P = ev_default_loop_ptr = &default_loop_struct;
1684#else 3428#else
1685 ev_default_loop_ptr = 1; 3429 ev_default_loop_ptr = 1;
1686#endif 3430#endif
1687 3431
1688 loop_init (EV_A_ flags); 3432 loop_init (EV_A_ flags);
1689 3433
1690 if (ev_backend (EV_A)) 3434 if (ev_backend (EV_A))
1691 { 3435 {
1692#ifndef _WIN32 3436#if EV_CHILD_ENABLE
1693 ev_signal_init (&childev, childcb, SIGCHLD); 3437 ev_signal_init (&childev, childcb, SIGCHLD);
1694 ev_set_priority (&childev, EV_MAXPRI); 3438 ev_set_priority (&childev, EV_MAXPRI);
1695 ev_signal_start (EV_A_ &childev); 3439 ev_signal_start (EV_A_ &childev);
1696 ev_unref (EV_A); /* child watcher should not keep loop alive */ 3440 ev_unref (EV_A); /* child watcher should not keep loop alive */
1697#endif 3441#endif
… …
1702 3446
1703 return ev_default_loop_ptr; 3447 return ev_default_loop_ptr;
1704} 3448}
1705 3449
1706void 3450void
1707ev_default_destroy (void) 3451ev_loop_fork (EV_P) EV_NOEXCEPT
1708{ 3452{
1709#if EV_MULTIPLICITY 3453 postfork = 1;
1710 struct ev_loop *loop = ev_default_loop_ptr;
1711#endif
1712
1713 ev_default_loop_ptr = 0;
1714
1715#ifndef _WIN32
1716 ev_ref (EV_A); /* child watcher */
1717 ev_signal_stop (EV_A_ &childev);
1718#endif
1719
1720 loop_destroy (EV_A);
1721}
1722
1723void
1724ev_default_fork (void)
1725{
1726#if EV_MULTIPLICITY
1727 struct ev_loop *loop = ev_default_loop_ptr;
1728#endif
1729
1730 postfork = 1; /* must be in line with ev_loop_fork */
1731} 3454}
1732 3455
1733/*****************************************************************************/ 3456/*****************************************************************************/
1734 3457
1735void 3458void
1736ev_invoke (EV_P_ void *w, int revents) 3459ev_invoke (EV_P_ void *w, int revents)
1737{ 3460{
1738 EV_CB_INVOKE ((W)w, revents); 3461 EV_CB_INVOKE ((W)w, revents);
1739} 3462}
1740 3463
1741inline_speed void 3464unsigned int
1742call_pending (EV_P) 3465ev_pending_count (EV_P) EV_NOEXCEPT
1743{ 3466{
1744 int pri; 3467 int pri;
3468 unsigned int count = 0;
1745 3469
1746 for (pri = NUMPRI; pri--; ) 3470 for (pri = NUMPRI; pri--; )
3471 count += pendingcnt [pri];
3472
3473 return count;
3474}
3475
3476ecb_noinline
3477void
3478ev_invoke_pending (EV_P)
3479{
3480 pendingpri = NUMPRI;
3481
3482 do
3483 {
3484 --pendingpri;
3485
3486 /* pendingpri possibly gets modified in the inner loop */
1747 while (pendingcnt [pri]) 3487 while (pendingcnt [pendingpri])
1748 {
1749 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1750
1751 if (expect_true (p->w))
1752 { 3488 {
1753 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/ 3489 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
1754 3490
1755 p->w->pending = 0; 3491 p->w->pending = 0;
1756 EV_CB_INVOKE (p->w, p->events); 3492 EV_CB_INVOKE (p->w, p->events);
1757 EV_FREQUENT_CHECK; 3493 EV_FREQUENT_CHECK;
1758 } 3494 }
1759 } 3495 }
3496 while (pendingpri);
1760} 3497}
1761 3498
1762#if EV_IDLE_ENABLE 3499#if EV_IDLE_ENABLE
3500/* make idle watchers pending. this handles the "call-idle */
3501/* only when higher priorities are idle" logic */
1763inline_size void 3502inline_size void
1764idle_reify (EV_P) 3503idle_reify (EV_P)
1765{ 3504{
1766 if (expect_false (idleall)) 3505 if (ecb_expect_false (idleall))
1767 { 3506 {
1768 int pri; 3507 int pri;
1769 3508
1770 for (pri = NUMPRI; pri--; ) 3509 for (pri = NUMPRI; pri--; )
1771 { 3510 {
… …
1780 } 3519 }
1781 } 3520 }
1782} 3521}
1783#endif 3522#endif
1784 3523
3524/* make timers pending */
1785inline_size void 3525inline_size void
1786timers_reify (EV_P) 3526timers_reify (EV_P)
1787{ 3527{
1788 EV_FREQUENT_CHECK; 3528 EV_FREQUENT_CHECK;
1789 3529
… …
1813 EV_FREQUENT_CHECK; 3553 EV_FREQUENT_CHECK;
1814 feed_reverse (EV_A_ (W)w); 3554 feed_reverse (EV_A_ (W)w);
1815 } 3555 }
1816 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 3556 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1817 3557
1818 feed_reverse_done (EV_A_ EV_TIMEOUT); 3558 feed_reverse_done (EV_A_ EV_TIMER);
1819 } 3559 }
1820} 3560}
1821 3561
1822#if EV_PERIODIC_ENABLE 3562#if EV_PERIODIC_ENABLE
3563
3564ecb_noinline
3565static void
3566periodic_recalc (EV_P_ ev_periodic *w)
3567{
3568 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3569 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3570
3571 /* the above almost always errs on the low side */
3572 while (at <= ev_rt_now)
3573 {
3574 ev_tstamp nat = at + w->interval;
3575
3576 /* when resolution fails us, we use ev_rt_now */
3577 if (ecb_expect_false (nat == at))
3578 {
3579 at = ev_rt_now;
3580 break;
3581 }
3582
3583 at = nat;
3584 }
3585
3586 ev_at (w) = at;
3587}
3588
3589/* make periodics pending */
1823inline_size void 3590inline_size void
1824periodics_reify (EV_P) 3591periodics_reify (EV_P)
1825{ 3592{
1826 EV_FREQUENT_CHECK; 3593 EV_FREQUENT_CHECK;
1827 3594
1828 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3595 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1829 { 3596 {
1830 int feed_count = 0;
1831
1832 do 3597 do
1833 { 3598 {
1834 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3599 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
1835 3600
1836 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3601 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
1845 ANHE_at_cache (periodics [HEAP0]); 3610 ANHE_at_cache (periodics [HEAP0]);
1846 downheap (periodics, periodiccnt, HEAP0); 3611 downheap (periodics, periodiccnt, HEAP0);
1847 } 3612 }
1848 else if (w->interval) 3613 else if (w->interval)
1849 { 3614 {
1850 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3615 periodic_recalc (EV_A_ w);
1851 /* if next trigger time is not sufficiently in the future, put it there */
1852 /* this might happen because of floating point inexactness */
1853 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1854 {
1855 ev_at (w) += w->interval;
1856
1857 /* if interval is unreasonably low we might still have a time in the past */
1858 /* so correct this. this will make the periodic very inexact, but the user */
1859 /* has effectively asked to get triggered more often than possible */
1860 if (ev_at (w) < ev_rt_now)
1861 ev_at (w) = ev_rt_now;
1862 }
1863
1864 ANHE_at_cache (periodics [HEAP0]); 3616 ANHE_at_cache (periodics [HEAP0]);
1865 downheap (periodics, periodiccnt, HEAP0); 3617 downheap (periodics, periodiccnt, HEAP0);
1866 } 3618 }
1867 else 3619 else
1868 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3620 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
1874 3626
1875 feed_reverse_done (EV_A_ EV_PERIODIC); 3627 feed_reverse_done (EV_A_ EV_PERIODIC);
1876 } 3628 }
1877} 3629}
1878 3630
1879static void noinline 3631/* simply recalculate all periodics */
3632/* TODO: maybe ensure that at least one event happens when jumping forward? */
3633ecb_noinline ecb_cold
3634static void
1880periodics_reschedule (EV_P) 3635periodics_reschedule (EV_P)
1881{ 3636{
1882 int i; 3637 int i;
1883 3638
1884 /* adjust periodics after time jump */ 3639 /* adjust periodics after time jump */
… …
1887 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3642 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1888 3643
1889 if (w->reschedule_cb) 3644 if (w->reschedule_cb)
1890 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3645 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1891 else if (w->interval) 3646 else if (w->interval)
1892 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3647 periodic_recalc (EV_A_ w);
1893 3648
1894 ANHE_at_cache (periodics [i]); 3649 ANHE_at_cache (periodics [i]);
1895 } 3650 }
1896 3651
1897 reheap (periodics, periodiccnt); 3652 reheap (periodics, periodiccnt);
1898} 3653}
1899#endif 3654#endif
1900 3655
1901static void noinline 3656/* adjust all timers by a given offset */
3657ecb_noinline ecb_cold
3658static void
1902timers_reschedule (EV_P_ ev_tstamp adjust) 3659timers_reschedule (EV_P_ ev_tstamp adjust)
1903{ 3660{
1904 int i; 3661 int i;
1905 3662
1906 for (i = 0; i < timercnt; ++i) 3663 for (i = 0; i < timercnt; ++i)
… …
1909 ANHE_w (*he)->at += adjust; 3666 ANHE_w (*he)->at += adjust;
1910 ANHE_at_cache (*he); 3667 ANHE_at_cache (*he);
1911 } 3668 }
1912} 3669}
1913 3670
3671/* fetch new monotonic and realtime times from the kernel */
3672/* also detect if there was a timejump, and act accordingly */
1914inline_speed void 3673inline_speed void
1915time_update (EV_P_ ev_tstamp max_block) 3674time_update (EV_P_ ev_tstamp max_block)
1916{ 3675{
1917 int i;
1918
1919#if EV_USE_MONOTONIC 3676#if EV_USE_MONOTONIC
1920 if (expect_true (have_monotonic)) 3677 if (ecb_expect_true (have_monotonic))
1921 { 3678 {
3679 int i;
1922 ev_tstamp odiff = rtmn_diff; 3680 ev_tstamp odiff = rtmn_diff;
1923 3681
1924 mn_now = get_clock (); 3682 mn_now = get_clock ();
1925 3683
1926 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3684 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
1927 /* interpolate in the meantime */ 3685 /* interpolate in the meantime */
1928 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 3686 if (ecb_expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1929 { 3687 {
1930 ev_rt_now = rtmn_diff + mn_now; 3688 ev_rt_now = rtmn_diff + mn_now;
1931 return; 3689 return;
1932 } 3690 }
1933 3691
… …
1942 * doesn't hurt either as we only do this on time-jumps or 3700 * doesn't hurt either as we only do this on time-jumps or
1943 * in the unlikely event of having been preempted here. 3701 * in the unlikely event of having been preempted here.
1944 */ 3702 */
1945 for (i = 4; --i; ) 3703 for (i = 4; --i; )
1946 { 3704 {
3705 ev_tstamp diff;
1947 rtmn_diff = ev_rt_now - mn_now; 3706 rtmn_diff = ev_rt_now - mn_now;
1948 3707
3708 diff = odiff - rtmn_diff;
3709
1949 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3710 if (ecb_expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
1950 return; /* all is well */ 3711 return; /* all is well */
1951 3712
1952 ev_rt_now = ev_time (); 3713 ev_rt_now = ev_time ();
1953 mn_now = get_clock (); 3714 mn_now = get_clock ();
1954 now_floor = mn_now; 3715 now_floor = mn_now;
… …
1963 else 3724 else
1964#endif 3725#endif
1965 { 3726 {
1966 ev_rt_now = ev_time (); 3727 ev_rt_now = ev_time ();
1967 3728
1968 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 3729 if (ecb_expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1969 { 3730 {
1970 /* adjust timers. this is easy, as the offset is the same for all of them */ 3731 /* adjust timers. this is easy, as the offset is the same for all of them */
1971 timers_reschedule (EV_A_ ev_rt_now - mn_now); 3732 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1972#if EV_PERIODIC_ENABLE 3733#if EV_PERIODIC_ENABLE
1973 periodics_reschedule (EV_A); 3734 periodics_reschedule (EV_A);
… …
1976 3737
1977 mn_now = ev_rt_now; 3738 mn_now = ev_rt_now;
1978 } 3739 }
1979} 3740}
1980 3741
1981static int loop_done; 3742int
1982
1983void
1984ev_loop (EV_P_ int flags) 3743ev_run (EV_P_ int flags)
1985{ 3744{
3745#if EV_FEATURE_API
3746 ++loop_depth;
3747#endif
3748
3749 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
3750
1986 loop_done = EVUNLOOP_CANCEL; 3751 loop_done = EVBREAK_CANCEL;
1987 3752
1988 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 3753 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1989 3754
1990 do 3755 do
1991 { 3756 {
1992#if EV_VERIFY >= 2 3757#if EV_VERIFY >= 2
1993 ev_loop_verify (EV_A); 3758 ev_verify (EV_A);
1994#endif 3759#endif
1995 3760
1996#ifndef _WIN32 3761#ifndef _WIN32
1997 if (expect_false (curpid)) /* penalise the forking check even more */ 3762 if (ecb_expect_false (curpid)) /* penalise the forking check even more */
1998 if (expect_false (getpid () != curpid)) 3763 if (ecb_expect_false (getpid () != curpid))
1999 { 3764 {
2000 curpid = getpid (); 3765 curpid = getpid ();
2001 postfork = 1; 3766 postfork = 1;
2002 } 3767 }
2003#endif 3768#endif
2004 3769
2005#if EV_FORK_ENABLE 3770#if EV_FORK_ENABLE
2006 /* we might have forked, so queue fork handlers */ 3771 /* we might have forked, so queue fork handlers */
2007 if (expect_false (postfork)) 3772 if (ecb_expect_false (postfork))
2008 if (forkcnt) 3773 if (forkcnt)
2009 { 3774 {
2010 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3775 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2011 call_pending (EV_A); 3776 EV_INVOKE_PENDING;
2012 } 3777 }
2013#endif 3778#endif
2014 3779
3780#if EV_PREPARE_ENABLE
2015 /* queue prepare watchers (and execute them) */ 3781 /* queue prepare watchers (and execute them) */
2016 if (expect_false (preparecnt)) 3782 if (ecb_expect_false (preparecnt))
2017 { 3783 {
2018 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3784 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2019 call_pending (EV_A); 3785 EV_INVOKE_PENDING;
2020 } 3786 }
3787#endif
3788
3789 if (ecb_expect_false (loop_done))
3790 break;
2021 3791
2022 /* we might have forked, so reify kernel state if necessary */ 3792 /* we might have forked, so reify kernel state if necessary */
2023 if (expect_false (postfork)) 3793 if (ecb_expect_false (postfork))
2024 loop_fork (EV_A); 3794 loop_fork (EV_A);
2025 3795
2026 /* update fd-related kernel structures */ 3796 /* update fd-related kernel structures */
2027 fd_reify (EV_A); 3797 fd_reify (EV_A);
2028 3798
2029 /* calculate blocking time */ 3799 /* calculate blocking time */
2030 { 3800 {
2031 ev_tstamp waittime = 0.; 3801 ev_tstamp waittime = 0.;
2032 ev_tstamp sleeptime = 0.; 3802 ev_tstamp sleeptime = 0.;
2033 3803
3804 /* remember old timestamp for io_blocktime calculation */
3805 ev_tstamp prev_mn_now = mn_now;
3806
3807 /* update time to cancel out callback processing overhead */
3808 time_update (EV_A_ 1e100);
3809
3810 /* from now on, we want a pipe-wake-up */
3811 pipe_write_wanted = 1;
3812
3813 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3814
2034 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3815 if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2035 { 3816 {
2036 /* update time to cancel out callback processing overhead */ 3817 waittime = MAX_BLOCKTIME;
2037 time_update (EV_A_ 1e100);
2038 3818
2039 if (timercnt) 3819 if (timercnt)
2040 { 3820 {
2041 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3821 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2042 if (waittime > to) waittime = to; 3822 if (waittime > to) waittime = to;
2043 } 3823 }
2044 3824
2045#if EV_PERIODIC_ENABLE 3825#if EV_PERIODIC_ENABLE
2046 if (periodiccnt) 3826 if (periodiccnt)
2047 { 3827 {
2048 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3828 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2049 if (waittime > to) waittime = to; 3829 if (waittime > to) waittime = to;
2050 } 3830 }
2051#endif 3831#endif
2052 3832
3833 /* don't let timeouts decrease the waittime below timeout_blocktime */
2053 if (expect_false (waittime < timeout_blocktime)) 3834 if (ecb_expect_false (waittime < timeout_blocktime))
2054 waittime = timeout_blocktime; 3835 waittime = timeout_blocktime;
2055 3836
2056 sleeptime = waittime - backend_fudge; 3837 /* at this point, we NEED to wait, so we have to ensure */
3838 /* to pass a minimum nonzero value to the backend */
3839 if (ecb_expect_false (waittime < backend_mintime))
3840 waittime = backend_mintime;
2057 3841
3842 /* extra check because io_blocktime is commonly 0 */
2058 if (expect_true (sleeptime > io_blocktime)) 3843 if (ecb_expect_false (io_blocktime))
2059 sleeptime = io_blocktime;
2060
2061 if (sleeptime)
2062 { 3844 {
3845 sleeptime = io_blocktime - (mn_now - prev_mn_now);
3846
3847 if (sleeptime > waittime - backend_mintime)
3848 sleeptime = waittime - backend_mintime;
3849
3850 if (ecb_expect_true (sleeptime > 0.))
3851 {
2063 ev_sleep (sleeptime); 3852 ev_sleep (sleeptime);
2064 waittime -= sleeptime; 3853 waittime -= sleeptime;
3854 }
2065 } 3855 }
2066 } 3856 }
2067 3857
3858#if EV_FEATURE_API
2068 ++loop_count; 3859 ++loop_count;
3860#endif
3861 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2069 backend_poll (EV_A_ waittime); 3862 backend_poll (EV_A_ waittime);
3863 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3864
3865 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3866
3867 ECB_MEMORY_FENCE_ACQUIRE;
3868 if (pipe_write_skipped)
3869 {
3870 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3871 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3872 }
2070 3873
2071 /* update ev_rt_now, do magic */ 3874 /* update ev_rt_now, do magic */
2072 time_update (EV_A_ waittime + sleeptime); 3875 time_update (EV_A_ waittime + sleeptime);
2073 } 3876 }
2074 3877
… …
2081#if EV_IDLE_ENABLE 3884#if EV_IDLE_ENABLE
2082 /* queue idle watchers unless other events are pending */ 3885 /* queue idle watchers unless other events are pending */
2083 idle_reify (EV_A); 3886 idle_reify (EV_A);
2084#endif 3887#endif
2085 3888
3889#if EV_CHECK_ENABLE
2086 /* queue check watchers, to be executed first */ 3890 /* queue check watchers, to be executed first */
2087 if (expect_false (checkcnt)) 3891 if (ecb_expect_false (checkcnt))
2088 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3892 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3893#endif
2089 3894
2090 call_pending (EV_A); 3895 EV_INVOKE_PENDING;
2091 } 3896 }
2092 while (expect_true ( 3897 while (ecb_expect_true (
2093 activecnt 3898 activecnt
2094 && !loop_done 3899 && !loop_done
2095 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3900 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2096 )); 3901 ));
2097 3902
2098 if (loop_done == EVUNLOOP_ONE) 3903 if (loop_done == EVBREAK_ONE)
2099 loop_done = EVUNLOOP_CANCEL; 3904 loop_done = EVBREAK_CANCEL;
2100}
2101 3905
3906#if EV_FEATURE_API
3907 --loop_depth;
3908#endif
3909
3910 return activecnt;
3911}
3912
2102void 3913void
2103ev_unloop (EV_P_ int how) 3914ev_break (EV_P_ int how) EV_NOEXCEPT
2104{ 3915{
2105 loop_done = how; 3916 loop_done = how;
2106} 3917}
2107 3918
2108void 3919void
2109ev_ref (EV_P) 3920ev_ref (EV_P) EV_NOEXCEPT
2110{ 3921{
2111 ++activecnt; 3922 ++activecnt;
2112} 3923}
2113 3924
2114void 3925void
2115ev_unref (EV_P) 3926ev_unref (EV_P) EV_NOEXCEPT
2116{ 3927{
2117 --activecnt; 3928 --activecnt;
2118} 3929}
2119 3930
2120void 3931void
2121ev_now_update (EV_P) 3932ev_now_update (EV_P) EV_NOEXCEPT
2122{ 3933{
2123 time_update (EV_A_ 1e100); 3934 time_update (EV_A_ 1e100);
2124} 3935}
2125 3936
2126void 3937void
2127ev_suspend (EV_P) 3938ev_suspend (EV_P) EV_NOEXCEPT
2128{ 3939{
2129 ev_now_update (EV_A); 3940 ev_now_update (EV_A);
2130} 3941}
2131 3942
2132void 3943void
2133ev_resume (EV_P) 3944ev_resume (EV_P) EV_NOEXCEPT
2134{ 3945{
2135 ev_tstamp mn_prev = mn_now; 3946 ev_tstamp mn_prev = mn_now;
2136 3947
2137 ev_now_update (EV_A); 3948 ev_now_update (EV_A);
2138 printf ("update %f\n", mn_now - mn_prev);//D
2139 timers_reschedule (EV_A_ mn_now - mn_prev); 3949 timers_reschedule (EV_A_ mn_now - mn_prev);
3950#if EV_PERIODIC_ENABLE
3951 /* TODO: really do this? */
2140 periodics_reschedule (EV_A); 3952 periodics_reschedule (EV_A);
3953#endif
2141} 3954}
2142 3955
2143/*****************************************************************************/ 3956/*****************************************************************************/
3957/* singly-linked list management, used when the expected list length is short */
2144 3958
2145inline_size void 3959inline_size void
2146wlist_add (WL *head, WL elem) 3960wlist_add (WL *head, WL elem)
2147{ 3961{
2148 elem->next = *head; 3962 elem->next = *head;
… …
2152inline_size void 3966inline_size void
2153wlist_del (WL *head, WL elem) 3967wlist_del (WL *head, WL elem)
2154{ 3968{
2155 while (*head) 3969 while (*head)
2156 { 3970 {
2157 if (*head == elem) 3971 if (ecb_expect_true (*head == elem))
2158 { 3972 {
2159 *head = elem->next; 3973 *head = elem->next;
2160 return; 3974 break;
2161 } 3975 }
2162 3976
2163 head = &(*head)->next; 3977 head = &(*head)->next;
2164 } 3978 }
2165} 3979}
2166 3980
3981/* internal, faster, version of ev_clear_pending */
2167inline_speed void 3982inline_speed void
2168clear_pending (EV_P_ W w) 3983clear_pending (EV_P_ W w)
2169{ 3984{
2170 if (w->pending) 3985 if (w->pending)
2171 { 3986 {
2172 pendings [ABSPRI (w)][w->pending - 1].w = 0; 3987 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2173 w->pending = 0; 3988 w->pending = 0;
2174 } 3989 }
2175} 3990}
2176 3991
2177int 3992int
2178ev_clear_pending (EV_P_ void *w) 3993ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
2179{ 3994{
2180 W w_ = (W)w; 3995 W w_ = (W)w;
2181 int pending = w_->pending; 3996 int pending = w_->pending;
2182 3997
2183 if (expect_true (pending)) 3998 if (ecb_expect_true (pending))
2184 { 3999 {
2185 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 4000 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
4001 p->w = (W)&pending_w;
2186 w_->pending = 0; 4002 w_->pending = 0;
2187 p->w = 0;
2188 return p->events; 4003 return p->events;
2189 } 4004 }
2190 else 4005 else
2191 return 0; 4006 return 0;
2192} 4007}
2193 4008
2194inline_size void 4009inline_size void
2195pri_adjust (EV_P_ W w) 4010pri_adjust (EV_P_ W w)
2196{ 4011{
2197 int pri = w->priority; 4012 int pri = ev_priority (w);
2198 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 4013 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2199 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 4014 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2200 w->priority = pri; 4015 ev_set_priority (w, pri);
2201} 4016}
2202 4017
2203inline_speed void 4018inline_speed void
2204ev_start (EV_P_ W w, int active) 4019ev_start (EV_P_ W w, int active)
2205{ 4020{
… …
2215 w->active = 0; 4030 w->active = 0;
2216} 4031}
2217 4032
2218/*****************************************************************************/ 4033/*****************************************************************************/
2219 4034
2220void noinline 4035ecb_noinline
4036void
2221ev_io_start (EV_P_ ev_io *w) 4037ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
2222{ 4038{
2223 int fd = w->fd; 4039 int fd = w->fd;
2224 4040
2225 if (expect_false (ev_is_active (w))) 4041 if (ecb_expect_false (ev_is_active (w)))
2226 return; 4042 return;
2227 4043
2228 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 4044 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2229 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 4045 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2230 4046
4047#if EV_VERIFY >= 2
4048 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
4049#endif
2231 EV_FREQUENT_CHECK; 4050 EV_FREQUENT_CHECK;
2232 4051
2233 ev_start (EV_A_ (W)w, 1); 4052 ev_start (EV_A_ (W)w, 1);
2234 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 4053 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
2235 wlist_add (&anfds[fd].head, (WL)w); 4054 wlist_add (&anfds[fd].head, (WL)w);
2236 4055
4056 /* common bug, apparently */
4057 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
4058
2237 fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1); 4059 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2238 w->events &= ~EV__IOFDSET; 4060 w->events &= ~EV__IOFDSET;
2239 4061
2240 EV_FREQUENT_CHECK; 4062 EV_FREQUENT_CHECK;
2241} 4063}
2242 4064
2243void noinline 4065ecb_noinline
4066void
2244ev_io_stop (EV_P_ ev_io *w) 4067ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
2245{ 4068{
2246 clear_pending (EV_A_ (W)w); 4069 clear_pending (EV_A_ (W)w);
2247 if (expect_false (!ev_is_active (w))) 4070 if (ecb_expect_false (!ev_is_active (w)))
2248 return; 4071 return;
2249 4072
2250 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 4073 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2251 4074
4075#if EV_VERIFY >= 2
4076 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
4077#endif
2252 EV_FREQUENT_CHECK; 4078 EV_FREQUENT_CHECK;
2253 4079
2254 wlist_del (&anfds[w->fd].head, (WL)w); 4080 wlist_del (&anfds[w->fd].head, (WL)w);
2255 ev_stop (EV_A_ (W)w); 4081 ev_stop (EV_A_ (W)w);
2256 4082
2257 fd_change (EV_A_ w->fd, 1); 4083 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2258 4084
2259 EV_FREQUENT_CHECK; 4085 EV_FREQUENT_CHECK;
2260} 4086}
2261 4087
2262void noinline 4088ecb_noinline
4089void
2263ev_timer_start (EV_P_ ev_timer *w) 4090ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
2264{ 4091{
2265 if (expect_false (ev_is_active (w))) 4092 if (ecb_expect_false (ev_is_active (w)))
2266 return; 4093 return;
2267 4094
2268 ev_at (w) += mn_now; 4095 ev_at (w) += mn_now;
2269 4096
2270 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 4097 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2271 4098
2272 EV_FREQUENT_CHECK; 4099 EV_FREQUENT_CHECK;
2273 4100
2274 ++timercnt; 4101 ++timercnt;
2275 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 4102 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
2276 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 4103 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
2277 ANHE_w (timers [ev_active (w)]) = (WT)w; 4104 ANHE_w (timers [ev_active (w)]) = (WT)w;
2278 ANHE_at_cache (timers [ev_active (w)]); 4105 ANHE_at_cache (timers [ev_active (w)]);
2279 upheap (timers, ev_active (w)); 4106 upheap (timers, ev_active (w));
2280 4107
2281 EV_FREQUENT_CHECK; 4108 EV_FREQUENT_CHECK;
2282 4109
2283 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 4110 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2284} 4111}
2285 4112
2286void noinline 4113ecb_noinline
4114void
2287ev_timer_stop (EV_P_ ev_timer *w) 4115ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
2288{ 4116{
2289 clear_pending (EV_A_ (W)w); 4117 clear_pending (EV_A_ (W)w);
2290 if (expect_false (!ev_is_active (w))) 4118 if (ecb_expect_false (!ev_is_active (w)))
2291 return; 4119 return;
2292 4120
2293 EV_FREQUENT_CHECK; 4121 EV_FREQUENT_CHECK;
2294 4122
2295 { 4123 {
… …
2297 4125
2298 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 4126 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2299 4127
2300 --timercnt; 4128 --timercnt;
2301 4129
2302 if (expect_true (active < timercnt + HEAP0)) 4130 if (ecb_expect_true (active < timercnt + HEAP0))
2303 { 4131 {
2304 timers [active] = timers [timercnt + HEAP0]; 4132 timers [active] = timers [timercnt + HEAP0];
2305 adjustheap (timers, timercnt, active); 4133 adjustheap (timers, timercnt, active);
2306 } 4134 }
2307 } 4135 }
2308 4136
2309 EV_FREQUENT_CHECK;
2310
2311 ev_at (w) -= mn_now; 4137 ev_at (w) -= mn_now;
2312 4138
2313 ev_stop (EV_A_ (W)w); 4139 ev_stop (EV_A_ (W)w);
2314}
2315 4140
2316void noinline 4141 EV_FREQUENT_CHECK;
4142}
4143
4144ecb_noinline
4145void
2317ev_timer_again (EV_P_ ev_timer *w) 4146ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
2318{ 4147{
2319 EV_FREQUENT_CHECK; 4148 EV_FREQUENT_CHECK;
4149
4150 clear_pending (EV_A_ (W)w);
2320 4151
2321 if (ev_is_active (w)) 4152 if (ev_is_active (w))
2322 { 4153 {
2323 if (w->repeat) 4154 if (w->repeat)
2324 { 4155 {
… …
2336 } 4167 }
2337 4168
2338 EV_FREQUENT_CHECK; 4169 EV_FREQUENT_CHECK;
2339} 4170}
2340 4171
4172ev_tstamp
4173ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
4174{
4175 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
4176}
4177
2341#if EV_PERIODIC_ENABLE 4178#if EV_PERIODIC_ENABLE
2342void noinline 4179ecb_noinline
4180void
2343ev_periodic_start (EV_P_ ev_periodic *w) 4181ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
2344{ 4182{
2345 if (expect_false (ev_is_active (w))) 4183 if (ecb_expect_false (ev_is_active (w)))
2346 return; 4184 return;
2347 4185
2348 if (w->reschedule_cb) 4186 if (w->reschedule_cb)
2349 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4187 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2350 else if (w->interval) 4188 else if (w->interval)
2351 { 4189 {
2352 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 4190 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2353 /* this formula differs from the one in periodic_reify because we do not always round up */ 4191 periodic_recalc (EV_A_ w);
2354 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2355 } 4192 }
2356 else 4193 else
2357 ev_at (w) = w->offset; 4194 ev_at (w) = w->offset;
2358 4195
2359 EV_FREQUENT_CHECK; 4196 EV_FREQUENT_CHECK;
2360 4197
2361 ++periodiccnt; 4198 ++periodiccnt;
2362 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4199 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2363 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4200 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
2364 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4201 ANHE_w (periodics [ev_active (w)]) = (WT)w;
2365 ANHE_at_cache (periodics [ev_active (w)]); 4202 ANHE_at_cache (periodics [ev_active (w)]);
2366 upheap (periodics, ev_active (w)); 4203 upheap (periodics, ev_active (w));
2367 4204
2368 EV_FREQUENT_CHECK; 4205 EV_FREQUENT_CHECK;
2369 4206
2370 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4207 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2371} 4208}
2372 4209
2373void noinline 4210ecb_noinline
4211void
2374ev_periodic_stop (EV_P_ ev_periodic *w) 4212ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
2375{ 4213{
2376 clear_pending (EV_A_ (W)w); 4214 clear_pending (EV_A_ (W)w);
2377 if (expect_false (!ev_is_active (w))) 4215 if (ecb_expect_false (!ev_is_active (w)))
2378 return; 4216 return;
2379 4217
2380 EV_FREQUENT_CHECK; 4218 EV_FREQUENT_CHECK;
2381 4219
2382 { 4220 {
… …
2384 4222
2385 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 4223 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2386 4224
2387 --periodiccnt; 4225 --periodiccnt;
2388 4226
2389 if (expect_true (active < periodiccnt + HEAP0)) 4227 if (ecb_expect_true (active < periodiccnt + HEAP0))
2390 { 4228 {
2391 periodics [active] = periodics [periodiccnt + HEAP0]; 4229 periodics [active] = periodics [periodiccnt + HEAP0];
2392 adjustheap (periodics, periodiccnt, active); 4230 adjustheap (periodics, periodiccnt, active);
2393 } 4231 }
2394 } 4232 }
2395 4233
2396 EV_FREQUENT_CHECK;
2397
2398 ev_stop (EV_A_ (W)w); 4234 ev_stop (EV_A_ (W)w);
2399}
2400 4235
2401void noinline 4236 EV_FREQUENT_CHECK;
4237}
4238
4239ecb_noinline
4240void
2402ev_periodic_again (EV_P_ ev_periodic *w) 4241ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
2403{ 4242{
2404 /* TODO: use adjustheap and recalculation */ 4243 /* TODO: use adjustheap and recalculation */
2405 ev_periodic_stop (EV_A_ w); 4244 ev_periodic_stop (EV_A_ w);
2406 ev_periodic_start (EV_A_ w); 4245 ev_periodic_start (EV_A_ w);
2407} 4246}
… …
2409 4248
2410#ifndef SA_RESTART 4249#ifndef SA_RESTART
2411# define SA_RESTART 0 4250# define SA_RESTART 0
2412#endif 4251#endif
2413 4252
2414void noinline 4253#if EV_SIGNAL_ENABLE
4254
4255ecb_noinline
4256void
2415ev_signal_start (EV_P_ ev_signal *w) 4257ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
2416{ 4258{
4259 if (ecb_expect_false (ev_is_active (w)))
4260 return;
4261
4262 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
4263
2417#if EV_MULTIPLICITY 4264#if EV_MULTIPLICITY
2418 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4265 assert (("libev: a signal must not be attached to two different loops",
2419#endif 4266 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2420 if (expect_false (ev_is_active (w)))
2421 return;
2422 4267
2423 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0)); 4268 signals [w->signum - 1].loop = EV_A;
4269 ECB_MEMORY_FENCE_RELEASE;
4270#endif
2424 4271
2425 evpipe_init (EV_A);
2426
2427 EV_FREQUENT_CHECK; 4272 EV_FREQUENT_CHECK;
2428 4273
4274#if EV_USE_SIGNALFD
4275 if (sigfd == -2)
2429 { 4276 {
2430#ifndef _WIN32 4277 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2431 sigset_t full, prev; 4278 if (sigfd < 0 && errno == EINVAL)
2432 sigfillset (&full); 4279 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2433 sigprocmask (SIG_SETMASK, &full, &prev);
2434#endif
2435 4280
2436 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); 4281 if (sigfd >= 0)
4282 {
4283 fd_intern (sigfd); /* doing it twice will not hurt */
2437 4284
2438#ifndef _WIN32 4285 sigemptyset (&sigfd_set);
2439 sigprocmask (SIG_SETMASK, &prev, 0); 4286
2440#endif 4287 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
4288 ev_set_priority (&sigfd_w, EV_MAXPRI);
4289 ev_io_start (EV_A_ &sigfd_w);
4290 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
4291 }
2441 } 4292 }
4293
4294 if (sigfd >= 0)
4295 {
4296 /* TODO: check .head */
4297 sigaddset (&sigfd_set, w->signum);
4298 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
4299
4300 signalfd (sigfd, &sigfd_set, 0);
4301 }
4302#endif
2442 4303
2443 ev_start (EV_A_ (W)w, 1); 4304 ev_start (EV_A_ (W)w, 1);
2444 wlist_add (&signals [w->signum - 1].head, (WL)w); 4305 wlist_add (&signals [w->signum - 1].head, (WL)w);
2445 4306
2446 if (!((WL)w)->next) 4307 if (!((WL)w)->next)
4308# if EV_USE_SIGNALFD
4309 if (sigfd < 0) /*TODO*/
4310# endif
2447 { 4311 {
2448#if _WIN32 4312# ifdef _WIN32
4313 evpipe_init (EV_A);
4314
2449 signal (w->signum, ev_sighandler); 4315 signal (w->signum, ev_sighandler);
2450#else 4316# else
2451 struct sigaction sa; 4317 struct sigaction sa;
4318
4319 evpipe_init (EV_A);
4320
2452 sa.sa_handler = ev_sighandler; 4321 sa.sa_handler = ev_sighandler;
2453 sigfillset (&sa.sa_mask); 4322 sigfillset (&sa.sa_mask);
2454 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 4323 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2455 sigaction (w->signum, &sa, 0); 4324 sigaction (w->signum, &sa, 0);
4325
4326 if (origflags & EVFLAG_NOSIGMASK)
4327 {
4328 sigemptyset (&sa.sa_mask);
4329 sigaddset (&sa.sa_mask, w->signum);
4330 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
4331 }
2456#endif 4332#endif
2457 } 4333 }
2458 4334
2459 EV_FREQUENT_CHECK; 4335 EV_FREQUENT_CHECK;
2460} 4336}
2461 4337
2462void noinline 4338ecb_noinline
4339void
2463ev_signal_stop (EV_P_ ev_signal *w) 4340ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
2464{ 4341{
2465 clear_pending (EV_A_ (W)w); 4342 clear_pending (EV_A_ (W)w);
2466 if (expect_false (!ev_is_active (w))) 4343 if (ecb_expect_false (!ev_is_active (w)))
2467 return; 4344 return;
2468 4345
2469 EV_FREQUENT_CHECK; 4346 EV_FREQUENT_CHECK;
2470 4347
2471 wlist_del (&signals [w->signum - 1].head, (WL)w); 4348 wlist_del (&signals [w->signum - 1].head, (WL)w);
2472 ev_stop (EV_A_ (W)w); 4349 ev_stop (EV_A_ (W)w);
2473 4350
2474 if (!signals [w->signum - 1].head) 4351 if (!signals [w->signum - 1].head)
4352 {
4353#if EV_MULTIPLICITY
4354 signals [w->signum - 1].loop = 0; /* unattach from signal */
4355#endif
4356#if EV_USE_SIGNALFD
4357 if (sigfd >= 0)
4358 {
4359 sigset_t ss;
4360
4361 sigemptyset (&ss);
4362 sigaddset (&ss, w->signum);
4363 sigdelset (&sigfd_set, w->signum);
4364
4365 signalfd (sigfd, &sigfd_set, 0);
4366 sigprocmask (SIG_UNBLOCK, &ss, 0);
4367 }
4368 else
4369#endif
2475 signal (w->signum, SIG_DFL); 4370 signal (w->signum, SIG_DFL);
4371 }
2476 4372
2477 EV_FREQUENT_CHECK; 4373 EV_FREQUENT_CHECK;
2478} 4374}
2479 4375
4376#endif
4377
4378#if EV_CHILD_ENABLE
4379
2480void 4380void
2481ev_child_start (EV_P_ ev_child *w) 4381ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
2482{ 4382{
2483#if EV_MULTIPLICITY 4383#if EV_MULTIPLICITY
2484 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4384 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2485#endif 4385#endif
2486 if (expect_false (ev_is_active (w))) 4386 if (ecb_expect_false (ev_is_active (w)))
2487 return; 4387 return;
2488 4388
2489 EV_FREQUENT_CHECK; 4389 EV_FREQUENT_CHECK;
2490 4390
2491 ev_start (EV_A_ (W)w, 1); 4391 ev_start (EV_A_ (W)w, 1);
2492 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4392 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2493 4393
2494 EV_FREQUENT_CHECK; 4394 EV_FREQUENT_CHECK;
2495} 4395}
2496 4396
2497void 4397void
2498ev_child_stop (EV_P_ ev_child *w) 4398ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
2499{ 4399{
2500 clear_pending (EV_A_ (W)w); 4400 clear_pending (EV_A_ (W)w);
2501 if (expect_false (!ev_is_active (w))) 4401 if (ecb_expect_false (!ev_is_active (w)))
2502 return; 4402 return;
2503 4403
2504 EV_FREQUENT_CHECK; 4404 EV_FREQUENT_CHECK;
2505 4405
2506 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4406 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2507 ev_stop (EV_A_ (W)w); 4407 ev_stop (EV_A_ (W)w);
2508 4408
2509 EV_FREQUENT_CHECK; 4409 EV_FREQUENT_CHECK;
2510} 4410}
4411
4412#endif
2511 4413
2512#if EV_STAT_ENABLE 4414#if EV_STAT_ENABLE
2513 4415
2514# ifdef _WIN32 4416# ifdef _WIN32
2515# undef lstat 4417# undef lstat
… …
2518 4420
2519#define DEF_STAT_INTERVAL 5.0074891 4421#define DEF_STAT_INTERVAL 5.0074891
2520#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4422#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2521#define MIN_STAT_INTERVAL 0.1074891 4423#define MIN_STAT_INTERVAL 0.1074891
2522 4424
2523static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4425ecb_noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2524 4426
2525#if EV_USE_INOTIFY 4427#if EV_USE_INOTIFY
2526# define EV_INOTIFY_BUFSIZE 8192
2527 4428
2528static void noinline 4429/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
4430# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
4431
4432ecb_noinline
4433static void
2529infy_add (EV_P_ ev_stat *w) 4434infy_add (EV_P_ ev_stat *w)
2530{ 4435{
2531 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); 4436 w->wd = inotify_add_watch (fs_fd, w->path,
4437 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4438 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4439 | IN_DONT_FOLLOW | IN_MASK_ADD);
2532 4440
2533 if (w->wd < 0) 4441 if (w->wd >= 0)
4442 {
4443 struct statfs sfs;
4444
4445 /* now local changes will be tracked by inotify, but remote changes won't */
4446 /* unless the filesystem is known to be local, we therefore still poll */
4447 /* also do poll on <2.6.25, but with normal frequency */
4448
4449 if (!fs_2625)
4450 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
4451 else if (!statfs (w->path, &sfs)
4452 && (sfs.f_type == 0x1373 /* devfs */
4453 || sfs.f_type == 0x4006 /* fat */
4454 || sfs.f_type == 0x4d44 /* msdos */
4455 || sfs.f_type == 0xEF53 /* ext2/3 */
4456 || sfs.f_type == 0x72b6 /* jffs2 */
4457 || sfs.f_type == 0x858458f6 /* ramfs */
4458 || sfs.f_type == 0x5346544e /* ntfs */
4459 || sfs.f_type == 0x3153464a /* jfs */
4460 || sfs.f_type == 0x9123683e /* btrfs */
4461 || sfs.f_type == 0x52654973 /* reiser3 */
4462 || sfs.f_type == 0x01021994 /* tmpfs */
4463 || sfs.f_type == 0x58465342 /* xfs */))
4464 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
4465 else
4466 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2534 { 4467 }
4468 else
4469 {
4470 /* can't use inotify, continue to stat */
2535 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4471 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2536 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2537 4472
2538 /* monitor some parent directory for speedup hints */ 4473 /* if path is not there, monitor some parent directory for speedup hints */
2539 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 4474 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2540 /* but an efficiency issue only */ 4475 /* but an efficiency issue only */
2541 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 4476 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2542 { 4477 {
2543 char path [4096]; 4478 char path [4096];
… …
2553 if (!pend || pend == path) 4488 if (!pend || pend == path)
2554 break; 4489 break;
2555 4490
2556 *pend = 0; 4491 *pend = 0;
2557 w->wd = inotify_add_watch (fs_fd, path, mask); 4492 w->wd = inotify_add_watch (fs_fd, path, mask);
2558 } 4493 }
2559 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 4494 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2560 } 4495 }
2561 } 4496 }
2562 4497
2563 if (w->wd >= 0) 4498 if (w->wd >= 0)
2564 {
2565 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4499 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2566 4500
2567 /* now local changes will be tracked by inotify, but remote changes won't */ 4501 /* now re-arm timer, if required */
2568 /* unless the filesystem it known to be local, we therefore still poll */ 4502 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2569 /* also do poll on <2.6.25, but with normal frequency */
2570 struct statfs sfs;
2571
2572 if (fs_2625 && !statfs (w->path, &sfs))
2573 if (sfs.f_type == 0x1373 /* devfs */
2574 || sfs.f_type == 0xEF53 /* ext2/3 */
2575 || sfs.f_type == 0x3153464a /* jfs */
2576 || sfs.f_type == 0x52654973 /* reiser3 */
2577 || sfs.f_type == 0x01021994 /* tempfs */
2578 || sfs.f_type == 0x58465342 /* xfs */)
2579 return;
2580
2581 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2582 ev_timer_again (EV_A_ &w->timer); 4503 ev_timer_again (EV_A_ &w->timer);
2583 } 4504 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2584} 4505}
2585 4506
2586static void noinline 4507ecb_noinline
4508static void
2587infy_del (EV_P_ ev_stat *w) 4509infy_del (EV_P_ ev_stat *w)
2588{ 4510{
2589 int slot; 4511 int slot;
2590 int wd = w->wd; 4512 int wd = w->wd;
2591 4513
2592 if (wd < 0) 4514 if (wd < 0)
2593 return; 4515 return;
2594 4516
2595 w->wd = -2; 4517 w->wd = -2;
2596 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 4518 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2597 wlist_del (&fs_hash [slot].head, (WL)w); 4519 wlist_del (&fs_hash [slot].head, (WL)w);
2598 4520
2599 /* remove this watcher, if others are watching it, they will rearm */ 4521 /* remove this watcher, if others are watching it, they will rearm */
2600 inotify_rm_watch (fs_fd, wd); 4522 inotify_rm_watch (fs_fd, wd);
2601} 4523}
2602 4524
2603static void noinline 4525ecb_noinline
4526static void
2604infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4527infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2605{ 4528{
2606 if (slot < 0) 4529 if (slot < 0)
2607 /* overflow, need to check for all hash slots */ 4530 /* overflow, need to check for all hash slots */
2608 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4531 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2609 infy_wd (EV_A_ slot, wd, ev); 4532 infy_wd (EV_A_ slot, wd, ev);
2610 else 4533 else
2611 { 4534 {
2612 WL w_; 4535 WL w_;
2613 4536
2614 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 4537 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2615 { 4538 {
2616 ev_stat *w = (ev_stat *)w_; 4539 ev_stat *w = (ev_stat *)w_;
2617 w_ = w_->next; /* lets us remove this watcher and all before it */ 4540 w_ = w_->next; /* lets us remove this watcher and all before it */
2618 4541
2619 if (w->wd == wd || wd == -1) 4542 if (w->wd == wd || wd == -1)
2620 { 4543 {
2621 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 4544 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2622 { 4545 {
2623 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4546 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2624 w->wd = -1; 4547 w->wd = -1;
2625 infy_add (EV_A_ w); /* re-add, no matter what */ 4548 infy_add (EV_A_ w); /* re-add, no matter what */
2626 } 4549 }
2627 4550
2628 stat_timer_cb (EV_A_ &w->timer, 0); 4551 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2633 4556
2634static void 4557static void
2635infy_cb (EV_P_ ev_io *w, int revents) 4558infy_cb (EV_P_ ev_io *w, int revents)
2636{ 4559{
2637 char buf [EV_INOTIFY_BUFSIZE]; 4560 char buf [EV_INOTIFY_BUFSIZE];
2638 struct inotify_event *ev = (struct inotify_event *)buf;
2639 int ofs; 4561 int ofs;
2640 int len = read (fs_fd, buf, sizeof (buf)); 4562 int len = read (fs_fd, buf, sizeof (buf));
2641 4563
2642 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 4564 for (ofs = 0; ofs < len; )
4565 {
4566 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2643 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4567 infy_wd (EV_A_ ev->wd, ev->wd, ev);
4568 ofs += sizeof (struct inotify_event) + ev->len;
4569 }
2644} 4570}
2645 4571
2646inline_size void 4572inline_size ecb_cold
4573void
2647check_2625 (EV_P) 4574ev_check_2625 (EV_P)
2648{ 4575{
2649 /* kernels < 2.6.25 are borked 4576 /* kernels < 2.6.25 are borked
2650 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4577 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2651 */ 4578 */
2652 struct utsname buf; 4579 if (ev_linux_version () < 0x020619)
2653 int major, minor, micro;
2654
2655 if (uname (&buf))
2656 return; 4580 return;
2657 4581
2658 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2659 return;
2660
2661 if (major < 2
2662 || (major == 2 && minor < 6)
2663 || (major == 2 && minor == 6 && micro < 25))
2664 return;
2665
2666 fs_2625 = 1; 4582 fs_2625 = 1;
4583}
4584
4585inline_size int
4586infy_newfd (void)
4587{
4588#if defined IN_CLOEXEC && defined IN_NONBLOCK
4589 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
4590 if (fd >= 0)
4591 return fd;
4592#endif
4593 return inotify_init ();
2667} 4594}
2668 4595
2669inline_size void 4596inline_size void
2670infy_init (EV_P) 4597infy_init (EV_P)
2671{ 4598{
2672 if (fs_fd != -2) 4599 if (fs_fd != -2)
2673 return; 4600 return;
2674 4601
2675 fs_fd = -1; 4602 fs_fd = -1;
2676 4603
2677 check_2625 (EV_A); 4604 ev_check_2625 (EV_A);
2678 4605
2679 fs_fd = inotify_init (); 4606 fs_fd = infy_newfd ();
2680 4607
2681 if (fs_fd >= 0) 4608 if (fs_fd >= 0)
2682 { 4609 {
4610 fd_intern (fs_fd);
2683 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 4611 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2684 ev_set_priority (&fs_w, EV_MAXPRI); 4612 ev_set_priority (&fs_w, EV_MAXPRI);
2685 ev_io_start (EV_A_ &fs_w); 4613 ev_io_start (EV_A_ &fs_w);
4614 ev_unref (EV_A);
2686 } 4615 }
2687} 4616}
2688 4617
2689inline_size void 4618inline_size void
2690infy_fork (EV_P) 4619infy_fork (EV_P)
… …
2692 int slot; 4621 int slot;
2693 4622
2694 if (fs_fd < 0) 4623 if (fs_fd < 0)
2695 return; 4624 return;
2696 4625
4626 ev_ref (EV_A);
4627 ev_io_stop (EV_A_ &fs_w);
2697 close (fs_fd); 4628 close (fs_fd);
2698 fs_fd = inotify_init (); 4629 fs_fd = infy_newfd ();
2699 4630
4631 if (fs_fd >= 0)
4632 {
4633 fd_intern (fs_fd);
4634 ev_io_set (&fs_w, fs_fd, EV_READ);
4635 ev_io_start (EV_A_ &fs_w);
4636 ev_unref (EV_A);
4637 }
4638
2700 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4639 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2701 { 4640 {
2702 WL w_ = fs_hash [slot].head; 4641 WL w_ = fs_hash [slot].head;
2703 fs_hash [slot].head = 0; 4642 fs_hash [slot].head = 0;
2704 4643
2705 while (w_) 4644 while (w_)
… …
2710 w->wd = -1; 4649 w->wd = -1;
2711 4650
2712 if (fs_fd >= 0) 4651 if (fs_fd >= 0)
2713 infy_add (EV_A_ w); /* re-add, no matter what */ 4652 infy_add (EV_A_ w); /* re-add, no matter what */
2714 else 4653 else
4654 {
4655 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
4656 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2715 ev_timer_again (EV_A_ &w->timer); 4657 ev_timer_again (EV_A_ &w->timer);
4658 if (ev_is_active (&w->timer)) ev_unref (EV_A);
4659 }
2716 } 4660 }
2717 } 4661 }
2718} 4662}
2719 4663
2720#endif 4664#endif
… …
2724#else 4668#else
2725# define EV_LSTAT(p,b) lstat (p, b) 4669# define EV_LSTAT(p,b) lstat (p, b)
2726#endif 4670#endif
2727 4671
2728void 4672void
2729ev_stat_stat (EV_P_ ev_stat *w) 4673ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
2730{ 4674{
2731 if (lstat (w->path, &w->attr) < 0) 4675 if (lstat (w->path, &w->attr) < 0)
2732 w->attr.st_nlink = 0; 4676 w->attr.st_nlink = 0;
2733 else if (!w->attr.st_nlink) 4677 else if (!w->attr.st_nlink)
2734 w->attr.st_nlink = 1; 4678 w->attr.st_nlink = 1;
2735} 4679}
2736 4680
2737static void noinline 4681ecb_noinline
4682static void
2738stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4683stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2739{ 4684{
2740 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4685 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2741 4686
2742 /* we copy this here each the time so that */ 4687 ev_statdata prev = w->attr;
2743 /* prev has the old value when the callback gets invoked */
2744 w->prev = w->attr;
2745 ev_stat_stat (EV_A_ w); 4688 ev_stat_stat (EV_A_ w);
2746 4689
2747 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 4690 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2748 if ( 4691 if (
2749 w->prev.st_dev != w->attr.st_dev 4692 prev.st_dev != w->attr.st_dev
2750 || w->prev.st_ino != w->attr.st_ino 4693 || prev.st_ino != w->attr.st_ino
2751 || w->prev.st_mode != w->attr.st_mode 4694 || prev.st_mode != w->attr.st_mode
2752 || w->prev.st_nlink != w->attr.st_nlink 4695 || prev.st_nlink != w->attr.st_nlink
2753 || w->prev.st_uid != w->attr.st_uid 4696 || prev.st_uid != w->attr.st_uid
2754 || w->prev.st_gid != w->attr.st_gid 4697 || prev.st_gid != w->attr.st_gid
2755 || w->prev.st_rdev != w->attr.st_rdev 4698 || prev.st_rdev != w->attr.st_rdev
2756 || w->prev.st_size != w->attr.st_size 4699 || prev.st_size != w->attr.st_size
2757 || w->prev.st_atime != w->attr.st_atime 4700 || prev.st_atime != w->attr.st_atime
2758 || w->prev.st_mtime != w->attr.st_mtime 4701 || prev.st_mtime != w->attr.st_mtime
2759 || w->prev.st_ctime != w->attr.st_ctime 4702 || prev.st_ctime != w->attr.st_ctime
2760 ) { 4703 ) {
4704 /* we only update w->prev on actual differences */
4705 /* in case we test more often than invoke the callback, */
4706 /* to ensure that prev is always different to attr */
4707 w->prev = prev;
4708
2761 #if EV_USE_INOTIFY 4709 #if EV_USE_INOTIFY
2762 if (fs_fd >= 0) 4710 if (fs_fd >= 0)
2763 { 4711 {
2764 infy_del (EV_A_ w); 4712 infy_del (EV_A_ w);
2765 infy_add (EV_A_ w); 4713 infy_add (EV_A_ w);
… …
2770 ev_feed_event (EV_A_ w, EV_STAT); 4718 ev_feed_event (EV_A_ w, EV_STAT);
2771 } 4719 }
2772} 4720}
2773 4721
2774void 4722void
2775ev_stat_start (EV_P_ ev_stat *w) 4723ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
2776{ 4724{
2777 if (expect_false (ev_is_active (w))) 4725 if (ecb_expect_false (ev_is_active (w)))
2778 return; 4726 return;
2779 4727
2780 ev_stat_stat (EV_A_ w); 4728 ev_stat_stat (EV_A_ w);
2781 4729
2782 if (w->interval < MIN_STAT_INTERVAL && w->interval) 4730 if (w->interval < MIN_STAT_INTERVAL && w->interval)
… …
2790 4738
2791 if (fs_fd >= 0) 4739 if (fs_fd >= 0)
2792 infy_add (EV_A_ w); 4740 infy_add (EV_A_ w);
2793 else 4741 else
2794#endif 4742#endif
4743 {
2795 ev_timer_again (EV_A_ &w->timer); 4744 ev_timer_again (EV_A_ &w->timer);
4745 ev_unref (EV_A);
4746 }
2796 4747
2797 ev_start (EV_A_ (W)w, 1); 4748 ev_start (EV_A_ (W)w, 1);
2798 4749
2799 EV_FREQUENT_CHECK; 4750 EV_FREQUENT_CHECK;
2800} 4751}
2801 4752
2802void 4753void
2803ev_stat_stop (EV_P_ ev_stat *w) 4754ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
2804{ 4755{
2805 clear_pending (EV_A_ (W)w); 4756 clear_pending (EV_A_ (W)w);
2806 if (expect_false (!ev_is_active (w))) 4757 if (ecb_expect_false (!ev_is_active (w)))
2807 return; 4758 return;
2808 4759
2809 EV_FREQUENT_CHECK; 4760 EV_FREQUENT_CHECK;
2810 4761
2811#if EV_USE_INOTIFY 4762#if EV_USE_INOTIFY
2812 infy_del (EV_A_ w); 4763 infy_del (EV_A_ w);
2813#endif 4764#endif
4765
4766 if (ev_is_active (&w->timer))
4767 {
4768 ev_ref (EV_A);
2814 ev_timer_stop (EV_A_ &w->timer); 4769 ev_timer_stop (EV_A_ &w->timer);
4770 }
2815 4771
2816 ev_stop (EV_A_ (W)w); 4772 ev_stop (EV_A_ (W)w);
2817 4773
2818 EV_FREQUENT_CHECK; 4774 EV_FREQUENT_CHECK;
2819} 4775}
2820#endif 4776#endif
2821 4777
2822#if EV_IDLE_ENABLE 4778#if EV_IDLE_ENABLE
2823void 4779void
2824ev_idle_start (EV_P_ ev_idle *w) 4780ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
2825{ 4781{
2826 if (expect_false (ev_is_active (w))) 4782 if (ecb_expect_false (ev_is_active (w)))
2827 return; 4783 return;
2828 4784
2829 pri_adjust (EV_A_ (W)w); 4785 pri_adjust (EV_A_ (W)w);
2830 4786
2831 EV_FREQUENT_CHECK; 4787 EV_FREQUENT_CHECK;
… …
2834 int active = ++idlecnt [ABSPRI (w)]; 4790 int active = ++idlecnt [ABSPRI (w)];
2835 4791
2836 ++idleall; 4792 ++idleall;
2837 ev_start (EV_A_ (W)w, active); 4793 ev_start (EV_A_ (W)w, active);
2838 4794
2839 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 4795 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
2840 idles [ABSPRI (w)][active - 1] = w; 4796 idles [ABSPRI (w)][active - 1] = w;
2841 } 4797 }
2842 4798
2843 EV_FREQUENT_CHECK; 4799 EV_FREQUENT_CHECK;
2844} 4800}
2845 4801
2846void 4802void
2847ev_idle_stop (EV_P_ ev_idle *w) 4803ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
2848{ 4804{
2849 clear_pending (EV_A_ (W)w); 4805 clear_pending (EV_A_ (W)w);
2850 if (expect_false (!ev_is_active (w))) 4806 if (ecb_expect_false (!ev_is_active (w)))
2851 return; 4807 return;
2852 4808
2853 EV_FREQUENT_CHECK; 4809 EV_FREQUENT_CHECK;
2854 4810
2855 { 4811 {
… …
2864 4820
2865 EV_FREQUENT_CHECK; 4821 EV_FREQUENT_CHECK;
2866} 4822}
2867#endif 4823#endif
2868 4824
4825#if EV_PREPARE_ENABLE
2869void 4826void
2870ev_prepare_start (EV_P_ ev_prepare *w) 4827ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
2871{ 4828{
2872 if (expect_false (ev_is_active (w))) 4829 if (ecb_expect_false (ev_is_active (w)))
2873 return; 4830 return;
2874 4831
2875 EV_FREQUENT_CHECK; 4832 EV_FREQUENT_CHECK;
2876 4833
2877 ev_start (EV_A_ (W)w, ++preparecnt); 4834 ev_start (EV_A_ (W)w, ++preparecnt);
2878 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4835 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
2879 prepares [preparecnt - 1] = w; 4836 prepares [preparecnt - 1] = w;
2880 4837
2881 EV_FREQUENT_CHECK; 4838 EV_FREQUENT_CHECK;
2882} 4839}
2883 4840
2884void 4841void
2885ev_prepare_stop (EV_P_ ev_prepare *w) 4842ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
2886{ 4843{
2887 clear_pending (EV_A_ (W)w); 4844 clear_pending (EV_A_ (W)w);
2888 if (expect_false (!ev_is_active (w))) 4845 if (ecb_expect_false (!ev_is_active (w)))
2889 return; 4846 return;
2890 4847
2891 EV_FREQUENT_CHECK; 4848 EV_FREQUENT_CHECK;
2892 4849
2893 { 4850 {
… …
2899 4856
2900 ev_stop (EV_A_ (W)w); 4857 ev_stop (EV_A_ (W)w);
2901 4858
2902 EV_FREQUENT_CHECK; 4859 EV_FREQUENT_CHECK;
2903} 4860}
4861#endif
2904 4862
4863#if EV_CHECK_ENABLE
2905void 4864void
2906ev_check_start (EV_P_ ev_check *w) 4865ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
2907{ 4866{
2908 if (expect_false (ev_is_active (w))) 4867 if (ecb_expect_false (ev_is_active (w)))
2909 return; 4868 return;
2910 4869
2911 EV_FREQUENT_CHECK; 4870 EV_FREQUENT_CHECK;
2912 4871
2913 ev_start (EV_A_ (W)w, ++checkcnt); 4872 ev_start (EV_A_ (W)w, ++checkcnt);
2914 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 4873 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
2915 checks [checkcnt - 1] = w; 4874 checks [checkcnt - 1] = w;
2916 4875
2917 EV_FREQUENT_CHECK; 4876 EV_FREQUENT_CHECK;
2918} 4877}
2919 4878
2920void 4879void
2921ev_check_stop (EV_P_ ev_check *w) 4880ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
2922{ 4881{
2923 clear_pending (EV_A_ (W)w); 4882 clear_pending (EV_A_ (W)w);
2924 if (expect_false (!ev_is_active (w))) 4883 if (ecb_expect_false (!ev_is_active (w)))
2925 return; 4884 return;
2926 4885
2927 EV_FREQUENT_CHECK; 4886 EV_FREQUENT_CHECK;
2928 4887
2929 { 4888 {
… …
2935 4894
2936 ev_stop (EV_A_ (W)w); 4895 ev_stop (EV_A_ (W)w);
2937 4896
2938 EV_FREQUENT_CHECK; 4897 EV_FREQUENT_CHECK;
2939} 4898}
4899#endif
2940 4900
2941#if EV_EMBED_ENABLE 4901#if EV_EMBED_ENABLE
2942void noinline 4902ecb_noinline
4903void
2943ev_embed_sweep (EV_P_ ev_embed *w) 4904ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
2944{ 4905{
2945 ev_loop (w->other, EVLOOP_NONBLOCK); 4906 ev_run (w->other, EVRUN_NOWAIT);
2946} 4907}
2947 4908
2948static void 4909static void
2949embed_io_cb (EV_P_ ev_io *io, int revents) 4910embed_io_cb (EV_P_ ev_io *io, int revents)
2950{ 4911{
2951 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4912 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2952 4913
2953 if (ev_cb (w)) 4914 if (ev_cb (w))
2954 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4915 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2955 else 4916 else
2956 ev_loop (w->other, EVLOOP_NONBLOCK); 4917 ev_run (w->other, EVRUN_NOWAIT);
2957} 4918}
2958 4919
2959static void 4920static void
2960embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4921embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2961{ 4922{
2962 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 4923 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2963 4924
2964 { 4925 {
2965 struct ev_loop *loop = w->other; 4926 EV_P = w->other;
2966 4927
2967 while (fdchangecnt) 4928 while (fdchangecnt)
2968 { 4929 {
2969 fd_reify (EV_A); 4930 fd_reify (EV_A);
2970 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4931 ev_run (EV_A_ EVRUN_NOWAIT);
2971 } 4932 }
2972 } 4933 }
2973} 4934}
2974 4935
2975static void 4936static void
… …
2978 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 4939 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
2979 4940
2980 ev_embed_stop (EV_A_ w); 4941 ev_embed_stop (EV_A_ w);
2981 4942
2982 { 4943 {
2983 struct ev_loop *loop = w->other; 4944 EV_P = w->other;
2984 4945
2985 ev_loop_fork (EV_A); 4946 ev_loop_fork (EV_A);
2986 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4947 ev_run (EV_A_ EVRUN_NOWAIT);
2987 } 4948 }
2988 4949
2989 ev_embed_start (EV_A_ w); 4950 ev_embed_start (EV_A_ w);
2990} 4951}
2991 4952
… …
2996 ev_idle_stop (EV_A_ idle); 4957 ev_idle_stop (EV_A_ idle);
2997} 4958}
2998#endif 4959#endif
2999 4960
3000void 4961void
3001ev_embed_start (EV_P_ ev_embed *w) 4962ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
3002{ 4963{
3003 if (expect_false (ev_is_active (w))) 4964 if (ecb_expect_false (ev_is_active (w)))
3004 return; 4965 return;
3005 4966
3006 { 4967 {
3007 struct ev_loop *loop = w->other; 4968 EV_P = w->other;
3008 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4969 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
3009 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 4970 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3010 } 4971 }
3011 4972
3012 EV_FREQUENT_CHECK; 4973 EV_FREQUENT_CHECK;
… …
3027 4988
3028 EV_FREQUENT_CHECK; 4989 EV_FREQUENT_CHECK;
3029} 4990}
3030 4991
3031void 4992void
3032ev_embed_stop (EV_P_ ev_embed *w) 4993ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
3033{ 4994{
3034 clear_pending (EV_A_ (W)w); 4995 clear_pending (EV_A_ (W)w);
3035 if (expect_false (!ev_is_active (w))) 4996 if (ecb_expect_false (!ev_is_active (w)))
3036 return; 4997 return;
3037 4998
3038 EV_FREQUENT_CHECK; 4999 EV_FREQUENT_CHECK;
3039 5000
3040 ev_io_stop (EV_A_ &w->io); 5001 ev_io_stop (EV_A_ &w->io);
3041 ev_prepare_stop (EV_A_ &w->prepare); 5002 ev_prepare_stop (EV_A_ &w->prepare);
3042 ev_fork_stop (EV_A_ &w->fork); 5003 ev_fork_stop (EV_A_ &w->fork);
3043 5004
5005 ev_stop (EV_A_ (W)w);
5006
3044 EV_FREQUENT_CHECK; 5007 EV_FREQUENT_CHECK;
3045} 5008}
3046#endif 5009#endif
3047 5010
3048#if EV_FORK_ENABLE 5011#if EV_FORK_ENABLE
3049void 5012void
3050ev_fork_start (EV_P_ ev_fork *w) 5013ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
3051{ 5014{
3052 if (expect_false (ev_is_active (w))) 5015 if (ecb_expect_false (ev_is_active (w)))
3053 return; 5016 return;
3054 5017
3055 EV_FREQUENT_CHECK; 5018 EV_FREQUENT_CHECK;
3056 5019
3057 ev_start (EV_A_ (W)w, ++forkcnt); 5020 ev_start (EV_A_ (W)w, ++forkcnt);
3058 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 5021 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
3059 forks [forkcnt - 1] = w; 5022 forks [forkcnt - 1] = w;
3060 5023
3061 EV_FREQUENT_CHECK; 5024 EV_FREQUENT_CHECK;
3062} 5025}
3063 5026
3064void 5027void
3065ev_fork_stop (EV_P_ ev_fork *w) 5028ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
3066{ 5029{
3067 clear_pending (EV_A_ (W)w); 5030 clear_pending (EV_A_ (W)w);
3068 if (expect_false (!ev_is_active (w))) 5031 if (ecb_expect_false (!ev_is_active (w)))
3069 return; 5032 return;
3070 5033
3071 EV_FREQUENT_CHECK; 5034 EV_FREQUENT_CHECK;
3072 5035
3073 { 5036 {
… …
3081 5044
3082 EV_FREQUENT_CHECK; 5045 EV_FREQUENT_CHECK;
3083} 5046}
3084#endif 5047#endif
3085 5048
5049#if EV_CLEANUP_ENABLE
5050void
5051ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
5052{
5053 if (ecb_expect_false (ev_is_active (w)))
5054 return;
5055
5056 EV_FREQUENT_CHECK;
5057
5058 ev_start (EV_A_ (W)w, ++cleanupcnt);
5059 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
5060 cleanups [cleanupcnt - 1] = w;
5061
5062 /* cleanup watchers should never keep a refcount on the loop */
5063 ev_unref (EV_A);
5064 EV_FREQUENT_CHECK;
5065}
5066
5067void
5068ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
5069{
5070 clear_pending (EV_A_ (W)w);
5071 if (ecb_expect_false (!ev_is_active (w)))
5072 return;
5073
5074 EV_FREQUENT_CHECK;
5075 ev_ref (EV_A);
5076
5077 {
5078 int active = ev_active (w);
5079
5080 cleanups [active - 1] = cleanups [--cleanupcnt];
5081 ev_active (cleanups [active - 1]) = active;
5082 }
5083
5084 ev_stop (EV_A_ (W)w);
5085
5086 EV_FREQUENT_CHECK;
5087}
5088#endif
5089
3086#if EV_ASYNC_ENABLE 5090#if EV_ASYNC_ENABLE
3087void 5091void
3088ev_async_start (EV_P_ ev_async *w) 5092ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
3089{ 5093{
3090 if (expect_false (ev_is_active (w))) 5094 if (ecb_expect_false (ev_is_active (w)))
3091 return; 5095 return;
3092 5096
5097 w->sent = 0;
5098
3093 evpipe_init (EV_A); 5099 evpipe_init (EV_A);
3094 5100
3095 EV_FREQUENT_CHECK; 5101 EV_FREQUENT_CHECK;
3096 5102
3097 ev_start (EV_A_ (W)w, ++asynccnt); 5103 ev_start (EV_A_ (W)w, ++asynccnt);
3098 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 5104 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
3099 asyncs [asynccnt - 1] = w; 5105 asyncs [asynccnt - 1] = w;
3100 5106
3101 EV_FREQUENT_CHECK; 5107 EV_FREQUENT_CHECK;
3102} 5108}
3103 5109
3104void 5110void
3105ev_async_stop (EV_P_ ev_async *w) 5111ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
3106{ 5112{
3107 clear_pending (EV_A_ (W)w); 5113 clear_pending (EV_A_ (W)w);
3108 if (expect_false (!ev_is_active (w))) 5114 if (ecb_expect_false (!ev_is_active (w)))
3109 return; 5115 return;
3110 5116
3111 EV_FREQUENT_CHECK; 5117 EV_FREQUENT_CHECK;
3112 5118
3113 { 5119 {
… …
3121 5127
3122 EV_FREQUENT_CHECK; 5128 EV_FREQUENT_CHECK;
3123} 5129}
3124 5130
3125void 5131void
3126ev_async_send (EV_P_ ev_async *w) 5132ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
3127{ 5133{
3128 w->sent = 1; 5134 w->sent = 1;
3129 evpipe_write (EV_A_ &gotasync); 5135 evpipe_write (EV_A_ &async_pending);
3130} 5136}
3131#endif 5137#endif
3132 5138
3133/*****************************************************************************/ 5139/*****************************************************************************/
3134 5140
… …
3168 5174
3169 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5175 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3170} 5176}
3171 5177
3172void 5178void
3173ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 5179ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
3174{ 5180{
3175 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5181 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3176
3177 if (expect_false (!once))
3178 {
3179 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
3180 return;
3181 }
3182 5182
3183 once->cb = cb; 5183 once->cb = cb;
3184 once->arg = arg; 5184 once->arg = arg;
3185 5185
3186 ev_init (&once->io, once_cb_io); 5186 ev_init (&once->io, once_cb_io);
… …
3198 } 5198 }
3199} 5199}
3200 5200
3201/*****************************************************************************/ 5201/*****************************************************************************/
3202 5202
3203#if 0 5203#if EV_WALK_ENABLE
5204ecb_cold
3204void 5205void
3205ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 5206ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
3206{ 5207{
3207 int i, j; 5208 int i, j;
3208 ev_watcher_list *wl, *wn; 5209 ev_watcher_list *wl, *wn;
3209 5210
3210 if (types & (EV_IO | EV_EMBED)) 5211 if (types & (EV_IO | EV_EMBED))
… …
3224#if EV_USE_INOTIFY 5225#if EV_USE_INOTIFY
3225 if (ev_cb ((ev_io *)wl) == infy_cb) 5226 if (ev_cb ((ev_io *)wl) == infy_cb)
3226 ; 5227 ;
3227 else 5228 else
3228#endif 5229#endif
3229 if ((ev_io *)wl != &pipeev) 5230 if ((ev_io *)wl != &pipe_w)
3230 if (types & EV_IO) 5231 if (types & EV_IO)
3231 cb (EV_A_ EV_IO, wl); 5232 cb (EV_A_ EV_IO, wl);
3232 5233
3233 wl = wn; 5234 wl = wn;
3234 } 5235 }
… …
3253 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 5254 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3254#endif 5255#endif
3255 5256
3256#if EV_IDLE_ENABLE 5257#if EV_IDLE_ENABLE
3257 if (types & EV_IDLE) 5258 if (types & EV_IDLE)
3258 for (j = NUMPRI; i--; ) 5259 for (j = NUMPRI; j--; )
3259 for (i = idlecnt [j]; i--; ) 5260 for (i = idlecnt [j]; i--; )
3260 cb (EV_A_ EV_IDLE, idles [j][i]); 5261 cb (EV_A_ EV_IDLE, idles [j][i]);
3261#endif 5262#endif
3262 5263
3263#if EV_FORK_ENABLE 5264#if EV_FORK_ENABLE
… …
3271 if (types & EV_ASYNC) 5272 if (types & EV_ASYNC)
3272 for (i = asynccnt; i--; ) 5273 for (i = asynccnt; i--; )
3273 cb (EV_A_ EV_ASYNC, asyncs [i]); 5274 cb (EV_A_ EV_ASYNC, asyncs [i]);
3274#endif 5275#endif
3275 5276
5277#if EV_PREPARE_ENABLE
3276 if (types & EV_PREPARE) 5278 if (types & EV_PREPARE)
3277 for (i = preparecnt; i--; ) 5279 for (i = preparecnt; i--; )
3278#if EV_EMBED_ENABLE 5280# if EV_EMBED_ENABLE
3279 if (ev_cb (prepares [i]) != embed_prepare_cb) 5281 if (ev_cb (prepares [i]) != embed_prepare_cb)
3280#endif 5282# endif
3281 cb (EV_A_ EV_PREPARE, prepares [i]); 5283 cb (EV_A_ EV_PREPARE, prepares [i]);
5284#endif
3282 5285
5286#if EV_CHECK_ENABLE
3283 if (types & EV_CHECK) 5287 if (types & EV_CHECK)
3284 for (i = checkcnt; i--; ) 5288 for (i = checkcnt; i--; )
3285 cb (EV_A_ EV_CHECK, checks [i]); 5289 cb (EV_A_ EV_CHECK, checks [i]);
5290#endif
3286 5291
5292#if EV_SIGNAL_ENABLE
3287 if (types & EV_SIGNAL) 5293 if (types & EV_SIGNAL)
3288 for (i = 0; i < signalmax; ++i) 5294 for (i = 0; i < EV_NSIG - 1; ++i)
3289 for (wl = signals [i].head; wl; ) 5295 for (wl = signals [i].head; wl; )
3290 { 5296 {
3291 wn = wl->next; 5297 wn = wl->next;
3292 cb (EV_A_ EV_SIGNAL, wl); 5298 cb (EV_A_ EV_SIGNAL, wl);
3293 wl = wn; 5299 wl = wn;
3294 } 5300 }
5301#endif
3295 5302
5303#if EV_CHILD_ENABLE
3296 if (types & EV_CHILD) 5304 if (types & EV_CHILD)
3297 for (i = EV_PID_HASHSIZE; i--; ) 5305 for (i = (EV_PID_HASHSIZE); i--; )
3298 for (wl = childs [i]; wl; ) 5306 for (wl = childs [i]; wl; )
3299 { 5307 {
3300 wn = wl->next; 5308 wn = wl->next;
3301 cb (EV_A_ EV_CHILD, wl); 5309 cb (EV_A_ EV_CHILD, wl);
3302 wl = wn; 5310 wl = wn;
3303 } 5311 }
5312#endif
3304/* EV_STAT 0x00001000 /* stat data changed */ 5313/* EV_STAT 0x00001000 /* stat data changed */
3305/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 5314/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3306} 5315}
3307#endif 5316#endif
3308 5317
3309#if EV_MULTIPLICITY 5318#if EV_MULTIPLICITY
3310 #include "ev_wrap.h" 5319 #include "ev_wrap.h"
3311#endif 5320#endif
3312 5321
3313#ifdef __cplusplus
3314}
3315#endif
3316

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