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Comparing libev/ev.c (file contents):
Revision 1.303 by root, Sun Jul 19 01:36:34 2009 UTC vs.
Revision 1.498 by root, Wed Jun 26 00:01:46 2019 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007-2019 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
10 * 1. Redistributions of source code must retain the above copyright notice, 10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer. 11 * this list of conditions and the following disclaimer.
12 * 12 *
13 * 2. Redistributions in binary form must reproduce the above copyright 13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the 14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution. 15 * documentation and/or other materials provided with the distribution.
16 * 16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- 18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO 19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- 20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
… …
35 * and other provisions required by the GPL. If you do not delete the 35 * and other provisions required by the GPL. If you do not delete the
36 * provisions above, a recipient may use your version of this file under 36 * provisions above, a recipient may use your version of this file under
37 * either the BSD or the GPL. 37 * either the BSD or the GPL.
38 */ 38 */
39 39
40#ifdef __cplusplus
41extern "C" {
42#endif
43
44/* this big block deduces configuration from config.h */ 40/* this big block deduces configuration from config.h */
45#ifndef EV_STANDALONE 41#ifndef EV_STANDALONE
46# ifdef EV_CONFIG_H 42# ifdef EV_CONFIG_H
47# include EV_CONFIG_H 43# include EV_CONFIG_H
48# else 44# else
49# include "config.h" 45# include "config.h"
46# endif
47
48# if HAVE_FLOOR
49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1
51# endif
50# endif 52# endif
51 53
52# if HAVE_CLOCK_SYSCALL 54# if HAVE_CLOCK_SYSCALL
53# ifndef EV_USE_CLOCK_SYSCALL 55# ifndef EV_USE_CLOCK_SYSCALL
54# define EV_USE_CLOCK_SYSCALL 1 56# define EV_USE_CLOCK_SYSCALL 1
… …
57# endif 59# endif
58# ifndef EV_USE_MONOTONIC 60# ifndef EV_USE_MONOTONIC
59# define EV_USE_MONOTONIC 1 61# define EV_USE_MONOTONIC 1
60# endif 62# endif
61# endif 63# endif
62# elif !defined(EV_USE_CLOCK_SYSCALL) 64# elif !defined EV_USE_CLOCK_SYSCALL
63# define EV_USE_CLOCK_SYSCALL 0 65# define EV_USE_CLOCK_SYSCALL 0
64# endif 66# endif
65 67
66# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
67# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
… …
77# ifndef EV_USE_REALTIME 79# ifndef EV_USE_REALTIME
78# define EV_USE_REALTIME 0 80# define EV_USE_REALTIME 0
79# endif 81# endif
80# endif 82# endif
81 83
84# if HAVE_NANOSLEEP
82# ifndef EV_USE_NANOSLEEP 85# ifndef EV_USE_NANOSLEEP
83# if HAVE_NANOSLEEP
84# define EV_USE_NANOSLEEP 1 86# define EV_USE_NANOSLEEP EV_FEATURE_OS
87# endif
85# else 88# else
89# undef EV_USE_NANOSLEEP
86# define EV_USE_NANOSLEEP 0 90# define EV_USE_NANOSLEEP 0
91# endif
92
93# if HAVE_SELECT && HAVE_SYS_SELECT_H
94# ifndef EV_USE_SELECT
95# define EV_USE_SELECT EV_FEATURE_BACKENDS
87# endif 96# endif
97# else
98# undef EV_USE_SELECT
99# define EV_USE_SELECT 0
88# endif 100# endif
89 101
102# if HAVE_POLL && HAVE_POLL_H
90# ifndef EV_USE_SELECT 103# ifndef EV_USE_POLL
91# if HAVE_SELECT && HAVE_SYS_SELECT_H 104# define EV_USE_POLL EV_FEATURE_BACKENDS
92# define EV_USE_SELECT 1
93# else
94# define EV_USE_SELECT 0
95# endif 105# endif
96# endif
97
98# ifndef EV_USE_POLL
99# if HAVE_POLL && HAVE_POLL_H
100# define EV_USE_POLL 1
101# else 106# else
107# undef EV_USE_POLL
102# define EV_USE_POLL 0 108# define EV_USE_POLL 0
103# endif
104# endif 109# endif
105 110
106# ifndef EV_USE_EPOLL
107# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 111# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
108# define EV_USE_EPOLL 1 112# ifndef EV_USE_EPOLL
109# else 113# define EV_USE_EPOLL EV_FEATURE_BACKENDS
110# define EV_USE_EPOLL 0
111# endif 114# endif
115# else
116# undef EV_USE_EPOLL
117# define EV_USE_EPOLL 0
112# endif 118# endif
113 119
114# ifndef EV_USE_KQUEUE 120# if HAVE_LINUX_AIO_ABI_H
115# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 121# ifndef EV_USE_LINUXAIO
116# define EV_USE_KQUEUE 1 122# define EV_USE_LINUXAIO EV_FEATURE_BACKENDS
117# else
118# define EV_USE_KQUEUE 0
119# endif 123# endif
124# else
125# undef EV_USE_LINUXAIO
126# define EV_USE_LINUXAIO 0
120# endif 127# endif
121 128
122# ifndef EV_USE_PORT 129# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
123# if HAVE_PORT_H && HAVE_PORT_CREATE 130# ifndef EV_USE_KQUEUE
124# define EV_USE_PORT 1 131# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
125# else
126# define EV_USE_PORT 0
127# endif 132# endif
133# else
134# undef EV_USE_KQUEUE
135# define EV_USE_KQUEUE 0
128# endif 136# endif
129 137
138# if HAVE_PORT_H && HAVE_PORT_CREATE
130# ifndef EV_USE_INOTIFY 139# ifndef EV_USE_PORT
131# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 140# define EV_USE_PORT EV_FEATURE_BACKENDS
132# define EV_USE_INOTIFY 1
133# else
134# define EV_USE_INOTIFY 0
135# endif 141# endif
142# else
143# undef EV_USE_PORT
144# define EV_USE_PORT 0
136# endif 145# endif
137 146
147# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
138# ifndef EV_USE_SIGNALFD 148# ifndef EV_USE_INOTIFY
139# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H 149# define EV_USE_INOTIFY EV_FEATURE_OS
140# define EV_USE_SIGNALFD 1
141# else
142# define EV_USE_SIGNALFD 0
143# endif 150# endif
151# else
152# undef EV_USE_INOTIFY
153# define EV_USE_INOTIFY 0
144# endif 154# endif
145 155
156# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
146# ifndef EV_USE_EVENTFD 157# ifndef EV_USE_SIGNALFD
147# if HAVE_EVENTFD 158# define EV_USE_SIGNALFD EV_FEATURE_OS
148# define EV_USE_EVENTFD 1
149# else
150# define EV_USE_EVENTFD 0
151# endif 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
152# endif 172# endif
153 173
154#endif 174#endif
155 175
156#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
157#include <stdlib.h> 186#include <stdlib.h>
187#include <string.h>
158#include <fcntl.h> 188#include <fcntl.h>
159#include <stddef.h> 189#include <stddef.h>
160 190
161#include <stdio.h> 191#include <stdio.h>
162 192
163#include <assert.h> 193#include <assert.h>
164#include <errno.h> 194#include <errno.h>
165#include <sys/types.h> 195#include <sys/types.h>
166#include <time.h> 196#include <time.h>
197#include <limits.h>
167 198
168#include <signal.h> 199#include <signal.h>
169 200
170#ifdef EV_H 201#ifdef EV_H
171# include EV_H 202# include EV_H
172#else 203#else
173# 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
174#endif 216#endif
175 217
176#ifndef _WIN32 218#ifndef _WIN32
177# include <sys/time.h> 219# include <sys/time.h>
178# include <sys/wait.h> 220# include <sys/wait.h>
179# include <unistd.h> 221# include <unistd.h>
180#else 222#else
181# include <io.h> 223# include <io.h>
182# define WIN32_LEAN_AND_MEAN 224# define WIN32_LEAN_AND_MEAN
225# include <winsock2.h>
183# include <windows.h> 226# include <windows.h>
184# ifndef EV_SELECT_IS_WINSOCKET 227# ifndef EV_SELECT_IS_WINSOCKET
185# define EV_SELECT_IS_WINSOCKET 1 228# define EV_SELECT_IS_WINSOCKET 1
186# endif 229# endif
230# undef EV_AVOID_STDIO
187#endif 231#endif
188 232
189/* 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 */
190 234
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
191#ifndef EV_USE_CLOCK_SYSCALL 264#ifndef EV_USE_CLOCK_SYSCALL
192# if __linux && __GLIBC__ >= 2 265# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
193# define EV_USE_CLOCK_SYSCALL 1 266# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
194# else 267# else
195# define EV_USE_CLOCK_SYSCALL 0 268# define EV_USE_CLOCK_SYSCALL 0
196# endif 269# endif
197#endif 270#endif
198 271
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
199#ifndef EV_USE_MONOTONIC 281#ifndef EV_USE_MONOTONIC
200# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 282# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
201# define EV_USE_MONOTONIC 1 283# define EV_USE_MONOTONIC EV_FEATURE_OS
202# else 284# else
203# define EV_USE_MONOTONIC 0 285# define EV_USE_MONOTONIC 0
204# endif 286# endif
205#endif 287#endif
206 288
… …
208# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 290# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
209#endif 291#endif
210 292
211#ifndef EV_USE_NANOSLEEP 293#ifndef EV_USE_NANOSLEEP
212# if _POSIX_C_SOURCE >= 199309L 294# if _POSIX_C_SOURCE >= 199309L
213# define EV_USE_NANOSLEEP 1 295# define EV_USE_NANOSLEEP EV_FEATURE_OS
214# else 296# else
215# define EV_USE_NANOSLEEP 0 297# define EV_USE_NANOSLEEP 0
216# endif 298# endif
217#endif 299#endif
218 300
219#ifndef EV_USE_SELECT 301#ifndef EV_USE_SELECT
220# define EV_USE_SELECT 1 302# define EV_USE_SELECT EV_FEATURE_BACKENDS
221#endif 303#endif
222 304
223#ifndef EV_USE_POLL 305#ifndef EV_USE_POLL
224# ifdef _WIN32 306# ifdef _WIN32
225# define EV_USE_POLL 0 307# define EV_USE_POLL 0
226# else 308# else
227# define EV_USE_POLL 1 309# define EV_USE_POLL EV_FEATURE_BACKENDS
228# endif 310# endif
229#endif 311#endif
230 312
231#ifndef EV_USE_EPOLL 313#ifndef EV_USE_EPOLL
232# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 314# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
233# define EV_USE_EPOLL 1 315# define EV_USE_EPOLL EV_FEATURE_BACKENDS
234# else 316# else
235# define EV_USE_EPOLL 0 317# define EV_USE_EPOLL 0
236# endif 318# endif
237#endif 319#endif
238 320
… …
242 324
243#ifndef EV_USE_PORT 325#ifndef EV_USE_PORT
244# define EV_USE_PORT 0 326# define EV_USE_PORT 0
245#endif 327#endif
246 328
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
247#ifndef EV_USE_INOTIFY 337#ifndef EV_USE_INOTIFY
248# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 338# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
249# define EV_USE_INOTIFY 1 339# define EV_USE_INOTIFY EV_FEATURE_OS
250# else 340# else
251# define EV_USE_INOTIFY 0 341# define EV_USE_INOTIFY 0
252# endif 342# endif
253#endif 343#endif
254 344
255#ifndef EV_PID_HASHSIZE 345#ifndef EV_PID_HASHSIZE
256# if EV_MINIMAL 346# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
257# define EV_PID_HASHSIZE 1
258# else
259# define EV_PID_HASHSIZE 16
260# endif
261#endif 347#endif
262 348
263#ifndef EV_INOTIFY_HASHSIZE 349#ifndef EV_INOTIFY_HASHSIZE
264# if EV_MINIMAL 350# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
265# define EV_INOTIFY_HASHSIZE 1
266# else
267# define EV_INOTIFY_HASHSIZE 16
268# endif
269#endif 351#endif
270 352
271#ifndef EV_USE_EVENTFD 353#ifndef EV_USE_EVENTFD
272# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 354# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
273# define EV_USE_EVENTFD 1 355# define EV_USE_EVENTFD EV_FEATURE_OS
274# else 356# else
275# define EV_USE_EVENTFD 0 357# define EV_USE_EVENTFD 0
276# endif 358# endif
277#endif 359#endif
278 360
279#ifndef EV_USE_SIGNALFD 361#ifndef EV_USE_SIGNALFD
280# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 9)) 362# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
281# define EV_USE_SIGNALFD 1 363# define EV_USE_SIGNALFD EV_FEATURE_OS
282# else 364# else
283# define EV_USE_SIGNALFD 0 365# define EV_USE_SIGNALFD 0
284# endif 366# endif
285#endif 367#endif
286 368
… …
289# define EV_USE_4HEAP 1 371# define EV_USE_4HEAP 1
290# define EV_HEAP_CACHE_AT 1 372# define EV_HEAP_CACHE_AT 1
291#endif 373#endif
292 374
293#ifndef EV_VERIFY 375#ifndef EV_VERIFY
294# define EV_VERIFY !EV_MINIMAL 376# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
295#endif 377#endif
296 378
297#ifndef EV_USE_4HEAP 379#ifndef EV_USE_4HEAP
298# define EV_USE_4HEAP !EV_MINIMAL 380# define EV_USE_4HEAP EV_FEATURE_DATA
299#endif 381#endif
300 382
301#ifndef EV_HEAP_CACHE_AT 383#ifndef EV_HEAP_CACHE_AT
302# define EV_HEAP_CACHE_AT !EV_MINIMAL 384# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
385#endif
386
387#ifdef __ANDROID__
388/* supposedly, android doesn't typedef fd_mask */
389# undef EV_USE_SELECT
390# define EV_USE_SELECT 0
391/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
392# undef EV_USE_CLOCK_SYSCALL
393# define EV_USE_CLOCK_SYSCALL 0
394#endif
395
396/* aix's poll.h seems to cause lots of trouble */
397#ifdef _AIX
398/* AIX has a completely broken poll.h header */
399# undef EV_USE_POLL
400# define EV_USE_POLL 0
303#endif 401#endif
304 402
305/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 403/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
306/* which makes programs even slower. might work on other unices, too. */ 404/* which makes programs even slower. might work on other unices, too. */
307#if EV_USE_CLOCK_SYSCALL 405#if EV_USE_CLOCK_SYSCALL
308# include <syscall.h> 406# include <sys/syscall.h>
309# ifdef SYS_clock_gettime 407# ifdef SYS_clock_gettime
310# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 408# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
311# undef EV_USE_MONOTONIC 409# undef EV_USE_MONOTONIC
312# define EV_USE_MONOTONIC 1 410# define EV_USE_MONOTONIC 1
313# else 411# else
… …
332# undef EV_USE_INOTIFY 430# undef EV_USE_INOTIFY
333# define EV_USE_INOTIFY 0 431# define EV_USE_INOTIFY 0
334#endif 432#endif
335 433
336#if !EV_USE_NANOSLEEP 434#if !EV_USE_NANOSLEEP
337# ifndef _WIN32 435/* hp-ux has it in sys/time.h, which we unconditionally include above */
436# if !defined _WIN32 && !defined __hpux
338# include <sys/select.h> 437# include <sys/select.h>
339# endif 438# endif
340#endif 439#endif
341 440
441#if EV_USE_LINUXAIO
442# include <sys/syscall.h>
443# if !SYS_io_getevents || !EV_USE_EPOLL /* ev_linxaio uses ev_poll.c:ev_epoll_create */
444# undef EV_USE_LINUXAIO
445# define EV_USE_LINUXAIO 0
446# endif
447#endif
448
342#if EV_USE_INOTIFY 449#if EV_USE_INOTIFY
343# include <sys/utsname.h>
344# include <sys/statfs.h> 450# include <sys/statfs.h>
345# include <sys/inotify.h> 451# include <sys/inotify.h>
346/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 452/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
347# ifndef IN_DONT_FOLLOW 453# ifndef IN_DONT_FOLLOW
348# undef EV_USE_INOTIFY 454# undef EV_USE_INOTIFY
349# define EV_USE_INOTIFY 0 455# define EV_USE_INOTIFY 0
350# endif 456# endif
351#endif 457#endif
352 458
353#if EV_SELECT_IS_WINSOCKET
354# include <winsock.h>
355#endif
356
357#if EV_USE_EVENTFD 459#if EV_USE_EVENTFD
358/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 460/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
359# include <stdint.h> 461# include <stdint.h>
360# ifndef EFD_NONBLOCK 462# ifndef EFD_NONBLOCK
361# define EFD_NONBLOCK O_NONBLOCK 463# define EFD_NONBLOCK O_NONBLOCK
362# endif 464# endif
363# ifndef EFD_CLOEXEC 465# ifndef EFD_CLOEXEC
466# ifdef O_CLOEXEC
364# define EFD_CLOEXEC O_CLOEXEC 467# define EFD_CLOEXEC O_CLOEXEC
468# else
469# define EFD_CLOEXEC 02000000
470# endif
365# endif 471# endif
366# ifdef __cplusplus 472EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
367extern "C" { 473#endif
474
475#if EV_USE_SIGNALFD
476/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
477# include <stdint.h>
478# ifndef SFD_NONBLOCK
479# define SFD_NONBLOCK O_NONBLOCK
368# endif 480# endif
369int eventfd (unsigned int initval, int flags); 481# ifndef SFD_CLOEXEC
370# ifdef __cplusplus 482# ifdef O_CLOEXEC
371} 483# define SFD_CLOEXEC O_CLOEXEC
484# else
485# define SFD_CLOEXEC 02000000
486# endif
372# endif 487# endif
373#endif 488EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
374 489
375#if EV_USE_SIGNALFD 490struct signalfd_siginfo
376# include <sys/signalfd.h> 491{
492 uint32_t ssi_signo;
493 char pad[128 - sizeof (uint32_t)];
494};
377#endif 495#endif
378 496
379/**/ 497/**/
380 498
381#if EV_VERIFY >= 3 499#if EV_VERIFY >= 3
382# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 500# define EV_FREQUENT_CHECK ev_verify (EV_A)
383#else 501#else
384# define EV_FREQUENT_CHECK do { } while (0) 502# define EV_FREQUENT_CHECK do { } while (0)
385#endif 503#endif
386 504
387/* 505/*
388 * This is used to avoid floating point rounding problems. 506 * This is used to work around floating point rounding problems.
389 * It is added to ev_rt_now when scheduling periodics
390 * to ensure progress, time-wise, even when rounding
391 * errors are against us.
392 * This value is good at least till the year 4000. 507 * This value is good at least till the year 4000.
393 * Better solutions welcome.
394 */ 508 */
395#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 509#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
510/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
396 511
397#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 512#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
398#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 513#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
399/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
400 514
515#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
516#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
517
518/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
519/* ECB.H BEGIN */
520/*
521 * libecb - http://software.schmorp.de/pkg/libecb
522 *
523 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
524 * Copyright (©) 2011 Emanuele Giaquinta
525 * All rights reserved.
526 *
527 * Redistribution and use in source and binary forms, with or without modifica-
528 * tion, are permitted provided that the following conditions are met:
529 *
530 * 1. Redistributions of source code must retain the above copyright notice,
531 * this list of conditions and the following disclaimer.
532 *
533 * 2. Redistributions in binary form must reproduce the above copyright
534 * notice, this list of conditions and the following disclaimer in the
535 * documentation and/or other materials provided with the distribution.
536 *
537 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
538 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
539 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
540 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
541 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
542 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
543 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
544 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
545 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
546 * OF THE POSSIBILITY OF SUCH DAMAGE.
547 *
548 * Alternatively, the contents of this file may be used under the terms of
549 * the GNU General Public License ("GPL") version 2 or any later version,
550 * in which case the provisions of the GPL are applicable instead of
551 * the above. If you wish to allow the use of your version of this file
552 * only under the terms of the GPL and not to allow others to use your
553 * version of this file under the BSD license, indicate your decision
554 * by deleting the provisions above and replace them with the notice
555 * and other provisions required by the GPL. If you do not delete the
556 * provisions above, a recipient may use your version of this file under
557 * either the BSD or the GPL.
558 */
559
560#ifndef ECB_H
561#define ECB_H
562
563/* 16 bits major, 16 bits minor */
564#define ECB_VERSION 0x00010006
565
566#ifdef _WIN32
567 typedef signed char int8_t;
568 typedef unsigned char uint8_t;
569 typedef signed short int16_t;
570 typedef unsigned short uint16_t;
571 typedef signed int int32_t;
572 typedef unsigned int uint32_t;
401#if __GNUC__ >= 4 573 #if __GNUC__
402# define expect(expr,value) __builtin_expect ((expr),(value)) 574 typedef signed long long int64_t;
403# define noinline __attribute__ ((noinline)) 575 typedef unsigned long long uint64_t;
576 #else /* _MSC_VER || __BORLANDC__ */
577 typedef signed __int64 int64_t;
578 typedef unsigned __int64 uint64_t;
579 #endif
580 #ifdef _WIN64
581 #define ECB_PTRSIZE 8
582 typedef uint64_t uintptr_t;
583 typedef int64_t intptr_t;
584 #else
585 #define ECB_PTRSIZE 4
586 typedef uint32_t uintptr_t;
587 typedef int32_t intptr_t;
588 #endif
404#else 589#else
405# define expect(expr,value) (expr) 590 #include <inttypes.h>
406# define noinline 591 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
407# if __STDC_VERSION__ < 199901L && __GNUC__ < 2 592 #define ECB_PTRSIZE 8
408# define inline 593 #else
594 #define ECB_PTRSIZE 4
595 #endif
409# endif 596#endif
597
598#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
599#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
600
601/* work around x32 idiocy by defining proper macros */
602#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
603 #if _ILP32
604 #define ECB_AMD64_X32 1
605 #else
606 #define ECB_AMD64 1
410#endif 607 #endif
608#endif
411 609
412#define expect_false(expr) expect ((expr) != 0, 0) 610/* many compilers define _GNUC_ to some versions but then only implement
413#define expect_true(expr) expect ((expr) != 0, 1) 611 * what their idiot authors think are the "more important" extensions,
414#define inline_size static inline 612 * causing enormous grief in return for some better fake benchmark numbers.
415 613 * or so.
416#if EV_MINIMAL 614 * we try to detect these and simply assume they are not gcc - if they have
417# define inline_speed static noinline 615 * an issue with that they should have done it right in the first place.
616 */
617#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
618 #define ECB_GCC_VERSION(major,minor) 0
418#else 619#else
620 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
621#endif
622
623#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
624
625#if __clang__ && defined __has_builtin
626 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
627#else
628 #define ECB_CLANG_BUILTIN(x) 0
629#endif
630
631#if __clang__ && defined __has_extension
632 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
633#else
634 #define ECB_CLANG_EXTENSION(x) 0
635#endif
636
637#define ECB_CPP (__cplusplus+0)
638#define ECB_CPP11 (__cplusplus >= 201103L)
639#define ECB_CPP14 (__cplusplus >= 201402L)
640#define ECB_CPP17 (__cplusplus >= 201703L)
641
642#if ECB_CPP
643 #define ECB_C 0
644 #define ECB_STDC_VERSION 0
645#else
646 #define ECB_C 1
647 #define ECB_STDC_VERSION __STDC_VERSION__
648#endif
649
650#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
651#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
652#define ECB_C17 (ECB_STDC_VERSION >= 201710L)
653
654#if ECB_CPP
655 #define ECB_EXTERN_C extern "C"
656 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
657 #define ECB_EXTERN_C_END }
658#else
659 #define ECB_EXTERN_C extern
660 #define ECB_EXTERN_C_BEG
661 #define ECB_EXTERN_C_END
662#endif
663
664/*****************************************************************************/
665
666/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
667/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
668
669#if ECB_NO_THREADS
670 #define ECB_NO_SMP 1
671#endif
672
673#if ECB_NO_SMP
674 #define ECB_MEMORY_FENCE do { } while (0)
675#endif
676
677/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
678#if __xlC__ && ECB_CPP
679 #include <builtins.h>
680#endif
681
682#if 1400 <= _MSC_VER
683 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
684#endif
685
686#ifndef ECB_MEMORY_FENCE
687 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
688 #define ECB_MEMORY_FENCE_RELAXED __asm__ __volatile__ ("" : : : "memory")
689 #if __i386 || __i386__
690 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
691 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
692 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
693 #elif ECB_GCC_AMD64
694 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
695 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
696 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
697 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
698 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
699 #elif defined __ARM_ARCH_2__ \
700 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
701 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
702 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
703 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
704 || defined __ARM_ARCH_5TEJ__
705 /* should not need any, unless running old code on newer cpu - arm doesn't support that */
706 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
707 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
708 || defined __ARM_ARCH_6T2__
709 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
710 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
711 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
712 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
713 #elif __aarch64__
714 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
715 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
716 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
717 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
718 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
719 #elif defined __s390__ || defined __s390x__
720 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
721 #elif defined __mips__
722 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
723 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
724 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
725 #elif defined __alpha__
726 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
727 #elif defined __hppa__
728 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
729 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
730 #elif defined __ia64__
731 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
732 #elif defined __m68k__
733 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
734 #elif defined __m88k__
735 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
736 #elif defined __sh__
737 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
738 #endif
739 #endif
740#endif
741
742#ifndef ECB_MEMORY_FENCE
743 #if ECB_GCC_VERSION(4,7)
744 /* see comment below (stdatomic.h) about the C11 memory model. */
745 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
746 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
747 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
748 #define ECB_MEMORY_FENCE_RELAXED __atomic_thread_fence (__ATOMIC_RELAXED)
749
750 #elif ECB_CLANG_EXTENSION(c_atomic)
751 /* see comment below (stdatomic.h) about the C11 memory model. */
752 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
753 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
754 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
755 #define ECB_MEMORY_FENCE_RELAXED __c11_atomic_thread_fence (__ATOMIC_RELAXED)
756
757 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
758 #define ECB_MEMORY_FENCE __sync_synchronize ()
759 #elif _MSC_VER >= 1500 /* VC++ 2008 */
760 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
761 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
762 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
763 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
764 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
765 #elif _MSC_VER >= 1400 /* VC++ 2005 */
766 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
767 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
768 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
769 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
770 #elif defined _WIN32
771 #include <WinNT.h>
772 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
773 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
774 #include <mbarrier.h>
775 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
776 #define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier ()
777 #define ECB_MEMORY_FENCE_RELEASE __machine_rel_barrier ()
778 #define ECB_MEMORY_FENCE_RELAXED __compiler_barrier ()
779 #elif __xlC__
780 #define ECB_MEMORY_FENCE __sync ()
781 #endif
782#endif
783
784#ifndef ECB_MEMORY_FENCE
785 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
786 /* we assume that these memory fences work on all variables/all memory accesses, */
787 /* not just C11 atomics and atomic accesses */
788 #include <stdatomic.h>
789 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
790 #define ECB_MEMORY_FENCE_ACQUIRE atomic_thread_fence (memory_order_acquire)
791 #define ECB_MEMORY_FENCE_RELEASE atomic_thread_fence (memory_order_release)
792 #endif
793#endif
794
795#ifndef ECB_MEMORY_FENCE
796 #if !ECB_AVOID_PTHREADS
797 /*
798 * if you get undefined symbol references to pthread_mutex_lock,
799 * or failure to find pthread.h, then you should implement
800 * the ECB_MEMORY_FENCE operations for your cpu/compiler
801 * OR provide pthread.h and link against the posix thread library
802 * of your system.
803 */
804 #include <pthread.h>
805 #define ECB_NEEDS_PTHREADS 1
806 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
807
808 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
809 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
810 #endif
811#endif
812
813#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
814 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
815#endif
816
817#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
818 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
819#endif
820
821#if !defined ECB_MEMORY_FENCE_RELAXED && defined ECB_MEMORY_FENCE
822 #define ECB_MEMORY_FENCE_RELAXED ECB_MEMORY_FENCE /* very heavy-handed */
823#endif
824
825/*****************************************************************************/
826
827#if ECB_CPP
828 #define ecb_inline static inline
829#elif ECB_GCC_VERSION(2,5)
830 #define ecb_inline static __inline__
831#elif ECB_C99
832 #define ecb_inline static inline
833#else
834 #define ecb_inline static
835#endif
836
837#if ECB_GCC_VERSION(3,3)
838 #define ecb_restrict __restrict__
839#elif ECB_C99
840 #define ecb_restrict restrict
841#else
842 #define ecb_restrict
843#endif
844
845typedef int ecb_bool;
846
847#define ECB_CONCAT_(a, b) a ## b
848#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
849#define ECB_STRINGIFY_(a) # a
850#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
851#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
852
853#define ecb_function_ ecb_inline
854
855#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
856 #define ecb_attribute(attrlist) __attribute__ (attrlist)
857#else
858 #define ecb_attribute(attrlist)
859#endif
860
861#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
862 #define ecb_is_constant(expr) __builtin_constant_p (expr)
863#else
864 /* possible C11 impl for integral types
865 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
866 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
867
868 #define ecb_is_constant(expr) 0
869#endif
870
871#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
872 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
873#else
874 #define ecb_expect(expr,value) (expr)
875#endif
876
877#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
878 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
879#else
880 #define ecb_prefetch(addr,rw,locality)
881#endif
882
883/* no emulation for ecb_decltype */
884#if ECB_CPP11
885 // older implementations might have problems with decltype(x)::type, work around it
886 template<class T> struct ecb_decltype_t { typedef T type; };
887 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
888#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
889 #define ecb_decltype(x) __typeof__ (x)
890#endif
891
892#if _MSC_VER >= 1300
893 #define ecb_deprecated __declspec (deprecated)
894#else
895 #define ecb_deprecated ecb_attribute ((__deprecated__))
896#endif
897
898#if _MSC_VER >= 1500
899 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
900#elif ECB_GCC_VERSION(4,5)
901 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
902#else
903 #define ecb_deprecated_message(msg) ecb_deprecated
904#endif
905
906#if _MSC_VER >= 1400
907 #define ecb_noinline __declspec (noinline)
908#else
909 #define ecb_noinline ecb_attribute ((__noinline__))
910#endif
911
912#define ecb_unused ecb_attribute ((__unused__))
913#define ecb_const ecb_attribute ((__const__))
914#define ecb_pure ecb_attribute ((__pure__))
915
916#if ECB_C11 || __IBMC_NORETURN
917 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
918 #define ecb_noreturn _Noreturn
919#elif ECB_CPP11
920 #define ecb_noreturn [[noreturn]]
921#elif _MSC_VER >= 1200
922 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
923 #define ecb_noreturn __declspec (noreturn)
924#else
925 #define ecb_noreturn ecb_attribute ((__noreturn__))
926#endif
927
928#if ECB_GCC_VERSION(4,3)
929 #define ecb_artificial ecb_attribute ((__artificial__))
930 #define ecb_hot ecb_attribute ((__hot__))
931 #define ecb_cold ecb_attribute ((__cold__))
932#else
933 #define ecb_artificial
934 #define ecb_hot
935 #define ecb_cold
936#endif
937
938/* put around conditional expressions if you are very sure that the */
939/* expression is mostly true or mostly false. note that these return */
940/* booleans, not the expression. */
941#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
942#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
943/* for compatibility to the rest of the world */
944#define ecb_likely(expr) ecb_expect_true (expr)
945#define ecb_unlikely(expr) ecb_expect_false (expr)
946
947/* count trailing zero bits and count # of one bits */
948#if ECB_GCC_VERSION(3,4) \
949 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
950 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
951 && ECB_CLANG_BUILTIN(__builtin_popcount))
952 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
953 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
954 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
955 #define ecb_ctz32(x) __builtin_ctz (x)
956 #define ecb_ctz64(x) __builtin_ctzll (x)
957 #define ecb_popcount32(x) __builtin_popcount (x)
958 /* no popcountll */
959#else
960 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
961 ecb_function_ ecb_const int
962 ecb_ctz32 (uint32_t x)
963 {
964#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
965 unsigned long r;
966 _BitScanForward (&r, x);
967 return (int)r;
968#else
969 int r = 0;
970
971 x &= ~x + 1; /* this isolates the lowest bit */
972
973#if ECB_branchless_on_i386
974 r += !!(x & 0xaaaaaaaa) << 0;
975 r += !!(x & 0xcccccccc) << 1;
976 r += !!(x & 0xf0f0f0f0) << 2;
977 r += !!(x & 0xff00ff00) << 3;
978 r += !!(x & 0xffff0000) << 4;
979#else
980 if (x & 0xaaaaaaaa) r += 1;
981 if (x & 0xcccccccc) r += 2;
982 if (x & 0xf0f0f0f0) r += 4;
983 if (x & 0xff00ff00) r += 8;
984 if (x & 0xffff0000) r += 16;
985#endif
986
987 return r;
988#endif
989 }
990
991 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
992 ecb_function_ ecb_const int
993 ecb_ctz64 (uint64_t x)
994 {
995#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
996 unsigned long r;
997 _BitScanForward64 (&r, x);
998 return (int)r;
999#else
1000 int shift = x & 0xffffffff ? 0 : 32;
1001 return ecb_ctz32 (x >> shift) + shift;
1002#endif
1003 }
1004
1005 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
1006 ecb_function_ ecb_const int
1007 ecb_popcount32 (uint32_t x)
1008 {
1009 x -= (x >> 1) & 0x55555555;
1010 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
1011 x = ((x >> 4) + x) & 0x0f0f0f0f;
1012 x *= 0x01010101;
1013
1014 return x >> 24;
1015 }
1016
1017 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
1018 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
1019 {
1020#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1021 unsigned long r;
1022 _BitScanReverse (&r, x);
1023 return (int)r;
1024#else
1025 int r = 0;
1026
1027 if (x >> 16) { x >>= 16; r += 16; }
1028 if (x >> 8) { x >>= 8; r += 8; }
1029 if (x >> 4) { x >>= 4; r += 4; }
1030 if (x >> 2) { x >>= 2; r += 2; }
1031 if (x >> 1) { r += 1; }
1032
1033 return r;
1034#endif
1035 }
1036
1037 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
1038 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
1039 {
1040#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1041 unsigned long r;
1042 _BitScanReverse64 (&r, x);
1043 return (int)r;
1044#else
1045 int r = 0;
1046
1047 if (x >> 32) { x >>= 32; r += 32; }
1048
1049 return r + ecb_ld32 (x);
1050#endif
1051 }
1052#endif
1053
1054ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
1055ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
1056ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
1057ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
1058
1059ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
1060ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
1061{
1062 return ( (x * 0x0802U & 0x22110U)
1063 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
1064}
1065
1066ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
1067ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
1068{
1069 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
1070 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
1071 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
1072 x = ( x >> 8 ) | ( x << 8);
1073
1074 return x;
1075}
1076
1077ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
1078ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
1079{
1080 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
1081 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
1082 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
1083 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
1084 x = ( x >> 16 ) | ( x << 16);
1085
1086 return x;
1087}
1088
1089/* popcount64 is only available on 64 bit cpus as gcc builtin */
1090/* so for this version we are lazy */
1091ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
1092ecb_function_ ecb_const int
1093ecb_popcount64 (uint64_t x)
1094{
1095 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
1096}
1097
1098ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
1099ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
1100ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
1101ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
1102ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
1103ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
1104ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
1105ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
1106
1107ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
1108ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
1109ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
1110ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
1111ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
1112ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
1113ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
1114ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
1115
1116#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1117 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1118 #define ecb_bswap16(x) __builtin_bswap16 (x)
1119 #else
1120 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1121 #endif
1122 #define ecb_bswap32(x) __builtin_bswap32 (x)
1123 #define ecb_bswap64(x) __builtin_bswap64 (x)
1124#elif _MSC_VER
1125 #include <stdlib.h>
1126 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1127 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1128 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
1129#else
1130 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
1131 ecb_function_ ecb_const uint16_t
1132 ecb_bswap16 (uint16_t x)
1133 {
1134 return ecb_rotl16 (x, 8);
1135 }
1136
1137 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
1138 ecb_function_ ecb_const uint32_t
1139 ecb_bswap32 (uint32_t x)
1140 {
1141 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
1142 }
1143
1144 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
1145 ecb_function_ ecb_const uint64_t
1146 ecb_bswap64 (uint64_t x)
1147 {
1148 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
1149 }
1150#endif
1151
1152#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
1153 #define ecb_unreachable() __builtin_unreachable ()
1154#else
1155 /* this seems to work fine, but gcc always emits a warning for it :/ */
1156 ecb_inline ecb_noreturn void ecb_unreachable (void);
1157 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
1158#endif
1159
1160/* try to tell the compiler that some condition is definitely true */
1161#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
1162
1163ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
1164ecb_inline ecb_const uint32_t
1165ecb_byteorder_helper (void)
1166{
1167 /* the union code still generates code under pressure in gcc, */
1168 /* but less than using pointers, and always seems to */
1169 /* successfully return a constant. */
1170 /* the reason why we have this horrible preprocessor mess */
1171 /* is to avoid it in all cases, at least on common architectures */
1172 /* or when using a recent enough gcc version (>= 4.6) */
1173#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1174 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1175 #define ECB_LITTLE_ENDIAN 1
1176 return 0x44332211;
1177#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1178 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1179 #define ECB_BIG_ENDIAN 1
1180 return 0x11223344;
1181#else
1182 union
1183 {
1184 uint8_t c[4];
1185 uint32_t u;
1186 } u = { 0x11, 0x22, 0x33, 0x44 };
1187 return u.u;
1188#endif
1189}
1190
1191ecb_inline ecb_const ecb_bool ecb_big_endian (void);
1192ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
1193ecb_inline ecb_const ecb_bool ecb_little_endian (void);
1194ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
1195
1196#if ECB_GCC_VERSION(3,0) || ECB_C99
1197 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1198#else
1199 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1200#endif
1201
1202#if ECB_CPP
1203 template<typename T>
1204 static inline T ecb_div_rd (T val, T div)
1205 {
1206 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1207 }
1208 template<typename T>
1209 static inline T ecb_div_ru (T val, T div)
1210 {
1211 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1212 }
1213#else
1214 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1215 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1216#endif
1217
1218#if ecb_cplusplus_does_not_suck
1219 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1220 template<typename T, int N>
1221 static inline int ecb_array_length (const T (&arr)[N])
1222 {
1223 return N;
1224 }
1225#else
1226 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1227#endif
1228
1229ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1230ecb_function_ ecb_const uint32_t
1231ecb_binary16_to_binary32 (uint32_t x)
1232{
1233 unsigned int s = (x & 0x8000) << (31 - 15);
1234 int e = (x >> 10) & 0x001f;
1235 unsigned int m = x & 0x03ff;
1236
1237 if (ecb_expect_false (e == 31))
1238 /* infinity or NaN */
1239 e = 255 - (127 - 15);
1240 else if (ecb_expect_false (!e))
1241 {
1242 if (ecb_expect_true (!m))
1243 /* zero, handled by code below by forcing e to 0 */
1244 e = 0 - (127 - 15);
1245 else
1246 {
1247 /* subnormal, renormalise */
1248 unsigned int s = 10 - ecb_ld32 (m);
1249
1250 m = (m << s) & 0x3ff; /* mask implicit bit */
1251 e -= s - 1;
1252 }
1253 }
1254
1255 /* e and m now are normalised, or zero, (or inf or nan) */
1256 e += 127 - 15;
1257
1258 return s | (e << 23) | (m << (23 - 10));
1259}
1260
1261ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1262ecb_function_ ecb_const uint16_t
1263ecb_binary32_to_binary16 (uint32_t x)
1264{
1265 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1266 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1267 unsigned int m = x & 0x007fffff;
1268
1269 x &= 0x7fffffff;
1270
1271 /* if it's within range of binary16 normals, use fast path */
1272 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1273 {
1274 /* mantissa round-to-even */
1275 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1276
1277 /* handle overflow */
1278 if (ecb_expect_false (m >= 0x00800000))
1279 {
1280 m >>= 1;
1281 e += 1;
1282 }
1283
1284 return s | (e << 10) | (m >> (23 - 10));
1285 }
1286
1287 /* handle large numbers and infinity */
1288 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1289 return s | 0x7c00;
1290
1291 /* handle zero, subnormals and small numbers */
1292 if (ecb_expect_true (x < 0x38800000))
1293 {
1294 /* zero */
1295 if (ecb_expect_true (!x))
1296 return s;
1297
1298 /* handle subnormals */
1299
1300 /* too small, will be zero */
1301 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1302 return s;
1303
1304 m |= 0x00800000; /* make implicit bit explicit */
1305
1306 /* very tricky - we need to round to the nearest e (+10) bit value */
1307 {
1308 unsigned int bits = 14 - e;
1309 unsigned int half = (1 << (bits - 1)) - 1;
1310 unsigned int even = (m >> bits) & 1;
1311
1312 /* if this overflows, we will end up with a normalised number */
1313 m = (m + half + even) >> bits;
1314 }
1315
1316 return s | m;
1317 }
1318
1319 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1320 m >>= 13;
1321
1322 return s | 0x7c00 | m | !m;
1323}
1324
1325/*******************************************************************************/
1326/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1327
1328/* basically, everything uses "ieee pure-endian" floating point numbers */
1329/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1330#if 0 \
1331 || __i386 || __i386__ \
1332 || ECB_GCC_AMD64 \
1333 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1334 || defined __s390__ || defined __s390x__ \
1335 || defined __mips__ \
1336 || defined __alpha__ \
1337 || defined __hppa__ \
1338 || defined __ia64__ \
1339 || defined __m68k__ \
1340 || defined __m88k__ \
1341 || defined __sh__ \
1342 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1343 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1344 || defined __aarch64__
1345 #define ECB_STDFP 1
1346 #include <string.h> /* for memcpy */
1347#else
1348 #define ECB_STDFP 0
1349#endif
1350
1351#ifndef ECB_NO_LIBM
1352
1353 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1354
1355 /* only the oldest of old doesn't have this one. solaris. */
1356 #ifdef INFINITY
1357 #define ECB_INFINITY INFINITY
1358 #else
1359 #define ECB_INFINITY HUGE_VAL
1360 #endif
1361
1362 #ifdef NAN
1363 #define ECB_NAN NAN
1364 #else
1365 #define ECB_NAN ECB_INFINITY
1366 #endif
1367
1368 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1369 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1370 #define ecb_frexpf(x,e) frexpf ((x), (e))
1371 #else
1372 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1373 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1374 #endif
1375
1376 /* convert a float to ieee single/binary32 */
1377 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1378 ecb_function_ ecb_const uint32_t
1379 ecb_float_to_binary32 (float x)
1380 {
1381 uint32_t r;
1382
1383 #if ECB_STDFP
1384 memcpy (&r, &x, 4);
1385 #else
1386 /* slow emulation, works for anything but -0 */
1387 uint32_t m;
1388 int e;
1389
1390 if (x == 0e0f ) return 0x00000000U;
1391 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1392 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1393 if (x != x ) return 0x7fbfffffU;
1394
1395 m = ecb_frexpf (x, &e) * 0x1000000U;
1396
1397 r = m & 0x80000000U;
1398
1399 if (r)
1400 m = -m;
1401
1402 if (e <= -126)
1403 {
1404 m &= 0xffffffU;
1405 m >>= (-125 - e);
1406 e = -126;
1407 }
1408
1409 r |= (e + 126) << 23;
1410 r |= m & 0x7fffffU;
1411 #endif
1412
1413 return r;
1414 }
1415
1416 /* converts an ieee single/binary32 to a float */
1417 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1418 ecb_function_ ecb_const float
1419 ecb_binary32_to_float (uint32_t x)
1420 {
1421 float r;
1422
1423 #if ECB_STDFP
1424 memcpy (&r, &x, 4);
1425 #else
1426 /* emulation, only works for normals and subnormals and +0 */
1427 int neg = x >> 31;
1428 int e = (x >> 23) & 0xffU;
1429
1430 x &= 0x7fffffU;
1431
1432 if (e)
1433 x |= 0x800000U;
1434 else
1435 e = 1;
1436
1437 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1438 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1439
1440 r = neg ? -r : r;
1441 #endif
1442
1443 return r;
1444 }
1445
1446 /* convert a double to ieee double/binary64 */
1447 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1448 ecb_function_ ecb_const uint64_t
1449 ecb_double_to_binary64 (double x)
1450 {
1451 uint64_t r;
1452
1453 #if ECB_STDFP
1454 memcpy (&r, &x, 8);
1455 #else
1456 /* slow emulation, works for anything but -0 */
1457 uint64_t m;
1458 int e;
1459
1460 if (x == 0e0 ) return 0x0000000000000000U;
1461 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1462 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1463 if (x != x ) return 0X7ff7ffffffffffffU;
1464
1465 m = frexp (x, &e) * 0x20000000000000U;
1466
1467 r = m & 0x8000000000000000;;
1468
1469 if (r)
1470 m = -m;
1471
1472 if (e <= -1022)
1473 {
1474 m &= 0x1fffffffffffffU;
1475 m >>= (-1021 - e);
1476 e = -1022;
1477 }
1478
1479 r |= ((uint64_t)(e + 1022)) << 52;
1480 r |= m & 0xfffffffffffffU;
1481 #endif
1482
1483 return r;
1484 }
1485
1486 /* converts an ieee double/binary64 to a double */
1487 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1488 ecb_function_ ecb_const double
1489 ecb_binary64_to_double (uint64_t x)
1490 {
1491 double r;
1492
1493 #if ECB_STDFP
1494 memcpy (&r, &x, 8);
1495 #else
1496 /* emulation, only works for normals and subnormals and +0 */
1497 int neg = x >> 63;
1498 int e = (x >> 52) & 0x7ffU;
1499
1500 x &= 0xfffffffffffffU;
1501
1502 if (e)
1503 x |= 0x10000000000000U;
1504 else
1505 e = 1;
1506
1507 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1508 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1509
1510 r = neg ? -r : r;
1511 #endif
1512
1513 return r;
1514 }
1515
1516 /* convert a float to ieee half/binary16 */
1517 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1518 ecb_function_ ecb_const uint16_t
1519 ecb_float_to_binary16 (float x)
1520 {
1521 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1522 }
1523
1524 /* convert an ieee half/binary16 to float */
1525 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1526 ecb_function_ ecb_const float
1527 ecb_binary16_to_float (uint16_t x)
1528 {
1529 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1530 }
1531
1532#endif
1533
1534#endif
1535
1536/* ECB.H END */
1537
1538#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1539/* if your architecture doesn't need memory fences, e.g. because it is
1540 * single-cpu/core, or if you use libev in a project that doesn't use libev
1541 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
1542 * libev, in which cases the memory fences become nops.
1543 * alternatively, you can remove this #error and link against libpthread,
1544 * which will then provide the memory fences.
1545 */
1546# error "memory fences not defined for your architecture, please report"
1547#endif
1548
1549#ifndef ECB_MEMORY_FENCE
1550# define ECB_MEMORY_FENCE do { } while (0)
1551# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1552# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1553#endif
1554
1555#define expect_false(cond) ecb_expect_false (cond)
1556#define expect_true(cond) ecb_expect_true (cond)
1557#define noinline ecb_noinline
1558
1559#define inline_size ecb_inline
1560
1561#if EV_FEATURE_CODE
419# define inline_speed static inline 1562# define inline_speed ecb_inline
1563#else
1564# define inline_speed noinline static
420#endif 1565#endif
421 1566
422#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1567#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
423 1568
424#if EV_MINPRI == EV_MAXPRI 1569#if EV_MINPRI == EV_MAXPRI
425# define ABSPRI(w) (((W)w), 0) 1570# define ABSPRI(w) (((W)w), 0)
426#else 1571#else
427# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1572# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
428#endif 1573#endif
429 1574
430#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1575#define EMPTY /* required for microsofts broken pseudo-c compiler */
431#define EMPTY2(a,b) /* used to suppress some warnings */
432 1576
433typedef ev_watcher *W; 1577typedef ev_watcher *W;
434typedef ev_watcher_list *WL; 1578typedef ev_watcher_list *WL;
435typedef ev_watcher_time *WT; 1579typedef ev_watcher_time *WT;
436 1580
437#define ev_active(w) ((W)(w))->active 1581#define ev_active(w) ((W)(w))->active
438#define ev_at(w) ((WT)(w))->at 1582#define ev_at(w) ((WT)(w))->at
439 1583
440#if EV_USE_REALTIME 1584#if EV_USE_REALTIME
441/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 1585/* sig_atomic_t is used to avoid per-thread variables or locking but still */
442/* giving it a reasonably high chance of working on typical architetcures */ 1586/* giving it a reasonably high chance of working on typical architectures */
443static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 1587static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
444#endif 1588#endif
445 1589
446#if EV_USE_MONOTONIC 1590#if EV_USE_MONOTONIC
447static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 1591static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
448#endif 1592#endif
449 1593
1594#ifndef EV_FD_TO_WIN32_HANDLE
1595# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
1596#endif
1597#ifndef EV_WIN32_HANDLE_TO_FD
1598# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
1599#endif
1600#ifndef EV_WIN32_CLOSE_FD
1601# define EV_WIN32_CLOSE_FD(fd) close (fd)
1602#endif
1603
450#ifdef _WIN32 1604#ifdef _WIN32
451# include "ev_win32.c" 1605# include "ev_win32.c"
452#endif 1606#endif
453 1607
454/*****************************************************************************/ 1608/*****************************************************************************/
455 1609
1610#if EV_USE_LINUXAIO
1611# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
1612#endif
1613
1614/* define a suitable floor function (only used by periodics atm) */
1615
1616#if EV_USE_FLOOR
1617# include <math.h>
1618# define ev_floor(v) floor (v)
1619#else
1620
1621#include <float.h>
1622
1623/* a floor() replacement function, should be independent of ev_tstamp type */
1624noinline
1625static ev_tstamp
1626ev_floor (ev_tstamp v)
1627{
1628 /* the choice of shift factor is not terribly important */
1629#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1630 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1631#else
1632 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1633#endif
1634
1635 /* argument too large for an unsigned long? */
1636 if (expect_false (v >= shift))
1637 {
1638 ev_tstamp f;
1639
1640 if (v == v - 1.)
1641 return v; /* very large number */
1642
1643 f = shift * ev_floor (v * (1. / shift));
1644 return f + ev_floor (v - f);
1645 }
1646
1647 /* special treatment for negative args? */
1648 if (expect_false (v < 0.))
1649 {
1650 ev_tstamp f = -ev_floor (-v);
1651
1652 return f - (f == v ? 0 : 1);
1653 }
1654
1655 /* fits into an unsigned long */
1656 return (unsigned long)v;
1657}
1658
1659#endif
1660
1661/*****************************************************************************/
1662
1663#ifdef __linux
1664# include <sys/utsname.h>
1665#endif
1666
1667noinline ecb_cold
1668static unsigned int
1669ev_linux_version (void)
1670{
1671#ifdef __linux
1672 unsigned int v = 0;
1673 struct utsname buf;
1674 int i;
1675 char *p = buf.release;
1676
1677 if (uname (&buf))
1678 return 0;
1679
1680 for (i = 3+1; --i; )
1681 {
1682 unsigned int c = 0;
1683
1684 for (;;)
1685 {
1686 if (*p >= '0' && *p <= '9')
1687 c = c * 10 + *p++ - '0';
1688 else
1689 {
1690 p += *p == '.';
1691 break;
1692 }
1693 }
1694
1695 v = (v << 8) | c;
1696 }
1697
1698 return v;
1699#else
1700 return 0;
1701#endif
1702}
1703
1704/*****************************************************************************/
1705
1706#if EV_AVOID_STDIO
1707noinline ecb_cold
1708static void
1709ev_printerr (const char *msg)
1710{
1711 write (STDERR_FILENO, msg, strlen (msg));
1712}
1713#endif
1714
456static void (*syserr_cb)(const char *msg); 1715static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
457 1716
1717ecb_cold
458void 1718void
459ev_set_syserr_cb (void (*cb)(const char *msg)) 1719ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
460{ 1720{
461 syserr_cb = cb; 1721 syserr_cb = cb;
462} 1722}
463 1723
464static void noinline 1724noinline ecb_cold
1725static void
465ev_syserr (const char *msg) 1726ev_syserr (const char *msg)
466{ 1727{
467 if (!msg) 1728 if (!msg)
468 msg = "(libev) system error"; 1729 msg = "(libev) system error";
469 1730
470 if (syserr_cb) 1731 if (syserr_cb)
471 syserr_cb (msg); 1732 syserr_cb (msg);
472 else 1733 else
473 { 1734 {
1735#if EV_AVOID_STDIO
1736 ev_printerr (msg);
1737 ev_printerr (": ");
1738 ev_printerr (strerror (errno));
1739 ev_printerr ("\n");
1740#else
474 perror (msg); 1741 perror (msg);
1742#endif
475 abort (); 1743 abort ();
476 } 1744 }
477} 1745}
478 1746
479static void * 1747static void *
480ev_realloc_emul (void *ptr, long size) 1748ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
481{ 1749{
482 /* some systems, notably openbsd and darwin, fail to properly 1750 /* some systems, notably openbsd and darwin, fail to properly
483 * implement realloc (x, 0) (as required by both ansi c-98 and 1751 * implement realloc (x, 0) (as required by both ansi c-89 and
484 * the single unix specification, so work around them here. 1752 * the single unix specification, so work around them here.
1753 * recently, also (at least) fedora and debian started breaking it,
1754 * despite documenting it otherwise.
485 */ 1755 */
486 1756
487 if (size) 1757 if (size)
488 return realloc (ptr, size); 1758 return realloc (ptr, size);
489 1759
490 free (ptr); 1760 free (ptr);
491 return 0; 1761 return 0;
492} 1762}
493 1763
494static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1764static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
495 1765
1766ecb_cold
496void 1767void
497ev_set_allocator (void *(*cb)(void *ptr, long size)) 1768ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
498{ 1769{
499 alloc = cb; 1770 alloc = cb;
500} 1771}
501 1772
502inline_speed void * 1773inline_speed void *
… …
504{ 1775{
505 ptr = alloc (ptr, size); 1776 ptr = alloc (ptr, size);
506 1777
507 if (!ptr && size) 1778 if (!ptr && size)
508 { 1779 {
1780#if EV_AVOID_STDIO
1781 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1782#else
509 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1783 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1784#endif
510 abort (); 1785 abort ();
511 } 1786 }
512 1787
513 return ptr; 1788 return ptr;
514} 1789}
… …
525typedef struct 1800typedef struct
526{ 1801{
527 WL head; 1802 WL head;
528 unsigned char events; /* the events watched for */ 1803 unsigned char events; /* the events watched for */
529 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */ 1804 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
530 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1805 unsigned char emask; /* some backends store the actual kernel mask in here */
531 unsigned char unused; 1806 unsigned char unused;
532#if EV_USE_EPOLL 1807#if EV_USE_EPOLL
533 unsigned int egen; /* generation counter to counter epoll bugs */ 1808 unsigned int egen; /* generation counter to counter epoll bugs */
534#endif 1809#endif
535#if EV_SELECT_IS_WINSOCKET 1810#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
536 SOCKET handle; 1811 SOCKET handle;
1812#endif
1813#if EV_USE_IOCP
1814 OVERLAPPED or, ow;
537#endif 1815#endif
538} ANFD; 1816} ANFD;
539 1817
540/* stores the pending event set for a given watcher */ 1818/* stores the pending event set for a given watcher */
541typedef struct 1819typedef struct
… …
583 #undef VAR 1861 #undef VAR
584 }; 1862 };
585 #include "ev_wrap.h" 1863 #include "ev_wrap.h"
586 1864
587 static struct ev_loop default_loop_struct; 1865 static struct ev_loop default_loop_struct;
588 struct ev_loop *ev_default_loop_ptr; 1866 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
589 1867
590#else 1868#else
591 1869
592 ev_tstamp ev_rt_now; 1870 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
593 #define VAR(name,decl) static decl; 1871 #define VAR(name,decl) static decl;
594 #include "ev_vars.h" 1872 #include "ev_vars.h"
595 #undef VAR 1873 #undef VAR
596 1874
597 static int ev_default_loop_ptr; 1875 static int ev_default_loop_ptr;
598 1876
599#endif 1877#endif
600 1878
601#if EV_MINIMAL < 2 1879#if EV_FEATURE_API
602# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 1880# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
603# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 1881# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
604# define EV_INVOKE_PENDING invoke_cb (EV_A) 1882# define EV_INVOKE_PENDING invoke_cb (EV_A)
605#else 1883#else
606# define EV_RELEASE_CB (void)0 1884# define EV_RELEASE_CB (void)0
607# define EV_ACQUIRE_CB (void)0 1885# define EV_ACQUIRE_CB (void)0
608# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1886# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
609#endif 1887#endif
610 1888
611#define EVUNLOOP_RECURSE 0x80 1889#define EVBREAK_RECURSE 0x80
612 1890
613/*****************************************************************************/ 1891/*****************************************************************************/
614 1892
615#ifndef EV_HAVE_EV_TIME 1893#ifndef EV_HAVE_EV_TIME
616ev_tstamp 1894ev_tstamp
617ev_time (void) 1895ev_time (void) EV_NOEXCEPT
618{ 1896{
619#if EV_USE_REALTIME 1897#if EV_USE_REALTIME
620 if (expect_true (have_realtime)) 1898 if (expect_true (have_realtime))
621 { 1899 {
622 struct timespec ts; 1900 struct timespec ts;
… …
646 return ev_time (); 1924 return ev_time ();
647} 1925}
648 1926
649#if EV_MULTIPLICITY 1927#if EV_MULTIPLICITY
650ev_tstamp 1928ev_tstamp
651ev_now (EV_P) 1929ev_now (EV_P) EV_NOEXCEPT
652{ 1930{
653 return ev_rt_now; 1931 return ev_rt_now;
654} 1932}
655#endif 1933#endif
656 1934
657void 1935void
658ev_sleep (ev_tstamp delay) 1936ev_sleep (ev_tstamp delay) EV_NOEXCEPT
659{ 1937{
660 if (delay > 0.) 1938 if (delay > 0.)
661 { 1939 {
662#if EV_USE_NANOSLEEP 1940#if EV_USE_NANOSLEEP
663 struct timespec ts; 1941 struct timespec ts;
664 1942
665 ts.tv_sec = (time_t)delay; 1943 EV_TS_SET (ts, delay);
666 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
667
668 nanosleep (&ts, 0); 1944 nanosleep (&ts, 0);
669#elif defined(_WIN32) 1945#elif defined _WIN32
1946 /* maybe this should round up, as ms is very low resolution */
1947 /* compared to select (µs) or nanosleep (ns) */
670 Sleep ((unsigned long)(delay * 1e3)); 1948 Sleep ((unsigned long)(delay * 1e3));
671#else 1949#else
672 struct timeval tv; 1950 struct timeval tv;
673 1951
674 tv.tv_sec = (time_t)delay;
675 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
676
677 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1952 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
678 /* something not guaranteed by newer posix versions, but guaranteed */ 1953 /* something not guaranteed by newer posix versions, but guaranteed */
679 /* by older ones */ 1954 /* by older ones */
1955 EV_TV_SET (tv, delay);
680 select (0, 0, 0, 0, &tv); 1956 select (0, 0, 0, 0, &tv);
681#endif 1957#endif
682 } 1958 }
683} 1959}
684 1960
685/*****************************************************************************/ 1961/*****************************************************************************/
686 1962
687#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1963#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
688 1964
689/* find a suitable new size for the given array, */ 1965/* find a suitable new size for the given array, */
690/* hopefully by rounding to a ncie-to-malloc size */ 1966/* hopefully by rounding to a nice-to-malloc size */
691inline_size int 1967inline_size int
692array_nextsize (int elem, int cur, int cnt) 1968array_nextsize (int elem, int cur, int cnt)
693{ 1969{
694 int ncur = cur + 1; 1970 int ncur = cur + 1;
695 1971
696 do 1972 do
697 ncur <<= 1; 1973 ncur <<= 1;
698 while (cnt > ncur); 1974 while (cnt > ncur);
699 1975
700 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1976 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
701 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1977 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
702 { 1978 {
703 ncur *= elem; 1979 ncur *= elem;
704 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1980 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
705 ncur = ncur - sizeof (void *) * 4; 1981 ncur = ncur - sizeof (void *) * 4;
… …
707 } 1983 }
708 1984
709 return ncur; 1985 return ncur;
710} 1986}
711 1987
712static noinline void * 1988noinline ecb_cold
1989static void *
713array_realloc (int elem, void *base, int *cur, int cnt) 1990array_realloc (int elem, void *base, int *cur, int cnt)
714{ 1991{
715 *cur = array_nextsize (elem, *cur, cnt); 1992 *cur = array_nextsize (elem, *cur, cnt);
716 return ev_realloc (base, elem * *cur); 1993 return ev_realloc (base, elem * *cur);
717} 1994}
718 1995
1996#define array_needsize_noinit(base,offset,count)
1997
719#define array_init_zero(base,count) \ 1998#define array_needsize_zerofill(base,offset,count) \
720 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1999 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
721 2000
722#define array_needsize(type,base,cur,cnt,init) \ 2001#define array_needsize(type,base,cur,cnt,init) \
723 if (expect_false ((cnt) > (cur))) \ 2002 if (expect_false ((cnt) > (cur))) \
724 { \ 2003 { \
725 int ocur_ = (cur); \ 2004 ecb_unused int ocur_ = (cur); \
726 (base) = (type *)array_realloc \ 2005 (base) = (type *)array_realloc \
727 (sizeof (type), (base), &(cur), (cnt)); \ 2006 (sizeof (type), (base), &(cur), (cnt)); \
728 init ((base) + (ocur_), (cur) - ocur_); \ 2007 init ((base), ocur_, ((cur) - ocur_)); \
729 } 2008 }
730 2009
731#if 0 2010#if 0
732#define array_slim(type,stem) \ 2011#define array_slim(type,stem) \
733 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2012 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
… …
742 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 2021 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
743 2022
744/*****************************************************************************/ 2023/*****************************************************************************/
745 2024
746/* dummy callback for pending events */ 2025/* dummy callback for pending events */
747static void noinline 2026noinline
2027static void
748pendingcb (EV_P_ ev_prepare *w, int revents) 2028pendingcb (EV_P_ ev_prepare *w, int revents)
749{ 2029{
750} 2030}
751 2031
752void noinline 2032noinline
2033void
753ev_feed_event (EV_P_ void *w, int revents) 2034ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
754{ 2035{
755 W w_ = (W)w; 2036 W w_ = (W)w;
756 int pri = ABSPRI (w_); 2037 int pri = ABSPRI (w_);
757 2038
758 if (expect_false (w_->pending)) 2039 if (expect_false (w_->pending))
759 pendings [pri][w_->pending - 1].events |= revents; 2040 pendings [pri][w_->pending - 1].events |= revents;
760 else 2041 else
761 { 2042 {
762 w_->pending = ++pendingcnt [pri]; 2043 w_->pending = ++pendingcnt [pri];
763 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2044 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
764 pendings [pri][w_->pending - 1].w = w_; 2045 pendings [pri][w_->pending - 1].w = w_;
765 pendings [pri][w_->pending - 1].events = revents; 2046 pendings [pri][w_->pending - 1].events = revents;
766 } 2047 }
2048
2049 pendingpri = NUMPRI - 1;
767} 2050}
768 2051
769inline_speed void 2052inline_speed void
770feed_reverse (EV_P_ W w) 2053feed_reverse (EV_P_ W w)
771{ 2054{
772 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2055 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
773 rfeeds [rfeedcnt++] = w; 2056 rfeeds [rfeedcnt++] = w;
774} 2057}
775 2058
776inline_size void 2059inline_size void
777feed_reverse_done (EV_P_ int revents) 2060feed_reverse_done (EV_P_ int revents)
… …
791} 2074}
792 2075
793/*****************************************************************************/ 2076/*****************************************************************************/
794 2077
795inline_speed void 2078inline_speed void
796fd_event_nc (EV_P_ int fd, int revents) 2079fd_event_nocheck (EV_P_ int fd, int revents)
797{ 2080{
798 ANFD *anfd = anfds + fd; 2081 ANFD *anfd = anfds + fd;
799 ev_io *w; 2082 ev_io *w;
800 2083
801 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2084 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
813fd_event (EV_P_ int fd, int revents) 2096fd_event (EV_P_ int fd, int revents)
814{ 2097{
815 ANFD *anfd = anfds + fd; 2098 ANFD *anfd = anfds + fd;
816 2099
817 if (expect_true (!anfd->reify)) 2100 if (expect_true (!anfd->reify))
818 fd_event_nc (EV_A_ fd, revents); 2101 fd_event_nocheck (EV_A_ fd, revents);
819} 2102}
820 2103
821void 2104void
822ev_feed_fd_event (EV_P_ int fd, int revents) 2105ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
823{ 2106{
824 if (fd >= 0 && fd < anfdmax) 2107 if (fd >= 0 && fd < anfdmax)
825 fd_event_nc (EV_A_ fd, revents); 2108 fd_event_nocheck (EV_A_ fd, revents);
826} 2109}
827 2110
828/* make sure the external fd watch events are in-sync */ 2111/* make sure the external fd watch events are in-sync */
829/* with the kernel/libev internal state */ 2112/* with the kernel/libev internal state */
830inline_size void 2113inline_size void
831fd_reify (EV_P) 2114fd_reify (EV_P)
832{ 2115{
833 int i; 2116 int i;
834 2117
2118#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
2119 for (i = 0; i < fdchangecnt; ++i)
2120 {
2121 int fd = fdchanges [i];
2122 ANFD *anfd = anfds + fd;
2123
2124 if (anfd->reify & EV__IOFDSET && anfd->head)
2125 {
2126 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
2127
2128 if (handle != anfd->handle)
2129 {
2130 unsigned long arg;
2131
2132 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
2133
2134 /* handle changed, but fd didn't - we need to do it in two steps */
2135 backend_modify (EV_A_ fd, anfd->events, 0);
2136 anfd->events = 0;
2137 anfd->handle = handle;
2138 }
2139 }
2140 }
2141#endif
2142
835 for (i = 0; i < fdchangecnt; ++i) 2143 for (i = 0; i < fdchangecnt; ++i)
836 { 2144 {
837 int fd = fdchanges [i]; 2145 int fd = fdchanges [i];
838 ANFD *anfd = anfds + fd; 2146 ANFD *anfd = anfds + fd;
839 ev_io *w; 2147 ev_io *w;
840 2148
841 unsigned char events = 0; 2149 unsigned char o_events = anfd->events;
2150 unsigned char o_reify = anfd->reify;
842 2151
843 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2152 anfd->reify = 0;
844 events |= (unsigned char)w->events;
845 2153
846#if EV_SELECT_IS_WINSOCKET 2154 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
847 if (events)
848 { 2155 {
849 unsigned long arg; 2156 anfd->events = 0;
850 #ifdef EV_FD_TO_WIN32_HANDLE 2157
851 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 2158 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
852 #else 2159 anfd->events |= (unsigned char)w->events;
853 anfd->handle = _get_osfhandle (fd); 2160
854 #endif 2161 if (o_events != anfd->events)
855 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 2162 o_reify = EV__IOFDSET; /* actually |= */
856 } 2163 }
857#endif
858 2164
859 { 2165 if (o_reify & EV__IOFDSET)
860 unsigned char o_events = anfd->events;
861 unsigned char o_reify = anfd->reify;
862
863 anfd->reify = 0;
864 anfd->events = events;
865
866 if (o_events != events || o_reify & EV__IOFDSET)
867 backend_modify (EV_A_ fd, o_events, events); 2166 backend_modify (EV_A_ fd, o_events, anfd->events);
868 }
869 } 2167 }
870 2168
871 fdchangecnt = 0; 2169 fdchangecnt = 0;
872} 2170}
873 2171
874/* something about the given fd changed */ 2172/* something about the given fd changed */
875inline_size void 2173inline_size
2174void
876fd_change (EV_P_ int fd, int flags) 2175fd_change (EV_P_ int fd, int flags)
877{ 2176{
878 unsigned char reify = anfds [fd].reify; 2177 unsigned char reify = anfds [fd].reify;
879 anfds [fd].reify |= flags; 2178 anfds [fd].reify |= flags;
880 2179
881 if (expect_true (!reify)) 2180 if (expect_true (!reify))
882 { 2181 {
883 ++fdchangecnt; 2182 ++fdchangecnt;
884 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2183 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
885 fdchanges [fdchangecnt - 1] = fd; 2184 fdchanges [fdchangecnt - 1] = fd;
886 } 2185 }
887} 2186}
888 2187
889/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2188/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
890inline_speed void 2189inline_speed ecb_cold void
891fd_kill (EV_P_ int fd) 2190fd_kill (EV_P_ int fd)
892{ 2191{
893 ev_io *w; 2192 ev_io *w;
894 2193
895 while ((w = (ev_io *)anfds [fd].head)) 2194 while ((w = (ev_io *)anfds [fd].head))
… …
897 ev_io_stop (EV_A_ w); 2196 ev_io_stop (EV_A_ w);
898 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2197 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
899 } 2198 }
900} 2199}
901 2200
902/* check whether the given fd is atcually valid, for error recovery */ 2201/* check whether the given fd is actually valid, for error recovery */
903inline_size int 2202inline_size ecb_cold int
904fd_valid (int fd) 2203fd_valid (int fd)
905{ 2204{
906#ifdef _WIN32 2205#ifdef _WIN32
907 return _get_osfhandle (fd) != -1; 2206 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
908#else 2207#else
909 return fcntl (fd, F_GETFD) != -1; 2208 return fcntl (fd, F_GETFD) != -1;
910#endif 2209#endif
911} 2210}
912 2211
913/* called on EBADF to verify fds */ 2212/* called on EBADF to verify fds */
914static void noinline 2213noinline ecb_cold
2214static void
915fd_ebadf (EV_P) 2215fd_ebadf (EV_P)
916{ 2216{
917 int fd; 2217 int fd;
918 2218
919 for (fd = 0; fd < anfdmax; ++fd) 2219 for (fd = 0; fd < anfdmax; ++fd)
… …
921 if (!fd_valid (fd) && errno == EBADF) 2221 if (!fd_valid (fd) && errno == EBADF)
922 fd_kill (EV_A_ fd); 2222 fd_kill (EV_A_ fd);
923} 2223}
924 2224
925/* called on ENOMEM in select/poll to kill some fds and retry */ 2225/* called on ENOMEM in select/poll to kill some fds and retry */
926static void noinline 2226noinline ecb_cold
2227static void
927fd_enomem (EV_P) 2228fd_enomem (EV_P)
928{ 2229{
929 int fd; 2230 int fd;
930 2231
931 for (fd = anfdmax; fd--; ) 2232 for (fd = anfdmax; fd--; )
932 if (anfds [fd].events) 2233 if (anfds [fd].events)
933 { 2234 {
934 fd_kill (EV_A_ fd); 2235 fd_kill (EV_A_ fd);
935 return; 2236 break;
936 } 2237 }
937} 2238}
938 2239
939/* usually called after fork if backend needs to re-arm all fds from scratch */ 2240/* usually called after fork if backend needs to re-arm all fds from scratch */
940static void noinline 2241noinline
2242static void
941fd_rearm_all (EV_P) 2243fd_rearm_all (EV_P)
942{ 2244{
943 int fd; 2245 int fd;
944 2246
945 for (fd = 0; fd < anfdmax; ++fd) 2247 for (fd = 0; fd < anfdmax; ++fd)
… …
949 anfds [fd].emask = 0; 2251 anfds [fd].emask = 0;
950 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); 2252 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
951 } 2253 }
952} 2254}
953 2255
2256/* used to prepare libev internal fd's */
2257/* this is not fork-safe */
2258inline_speed void
2259fd_intern (int fd)
2260{
2261#ifdef _WIN32
2262 unsigned long arg = 1;
2263 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
2264#else
2265 fcntl (fd, F_SETFD, FD_CLOEXEC);
2266 fcntl (fd, F_SETFL, O_NONBLOCK);
2267#endif
2268}
2269
954/*****************************************************************************/ 2270/*****************************************************************************/
955 2271
956/* 2272/*
957 * the heap functions want a real array index. array index 0 uis guaranteed to not 2273 * the heap functions want a real array index. array index 0 is guaranteed to not
958 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 2274 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
959 * the branching factor of the d-tree. 2275 * the branching factor of the d-tree.
960 */ 2276 */
961 2277
962/* 2278/*
… …
1030 2346
1031 for (;;) 2347 for (;;)
1032 { 2348 {
1033 int c = k << 1; 2349 int c = k << 1;
1034 2350
1035 if (c > N + HEAP0 - 1) 2351 if (c >= N + HEAP0)
1036 break; 2352 break;
1037 2353
1038 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 2354 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
1039 ? 1 : 0; 2355 ? 1 : 0;
1040 2356
… …
1076 2392
1077/* move an element suitably so it is in a correct place */ 2393/* move an element suitably so it is in a correct place */
1078inline_size void 2394inline_size void
1079adjustheap (ANHE *heap, int N, int k) 2395adjustheap (ANHE *heap, int N, int k)
1080{ 2396{
1081 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 2397 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1082 upheap (heap, k); 2398 upheap (heap, k);
1083 else 2399 else
1084 downheap (heap, N, k); 2400 downheap (heap, N, k);
1085} 2401}
1086 2402
… …
1099/*****************************************************************************/ 2415/*****************************************************************************/
1100 2416
1101/* associate signal watchers to a signal signal */ 2417/* associate signal watchers to a signal signal */
1102typedef struct 2418typedef struct
1103{ 2419{
2420 EV_ATOMIC_T pending;
2421#if EV_MULTIPLICITY
2422 EV_P;
2423#endif
1104 WL head; 2424 WL head;
1105 EV_ATOMIC_T gotsig;
1106} ANSIG; 2425} ANSIG;
1107 2426
1108static ANSIG *signals; 2427static ANSIG signals [EV_NSIG - 1];
1109static int signalmax;
1110
1111static EV_ATOMIC_T gotsig;
1112 2428
1113/*****************************************************************************/ 2429/*****************************************************************************/
1114 2430
1115/* used to prepare libev internal fd's */ 2431#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1116/* this is not fork-safe */ 2432
2433noinline ecb_cold
2434static void
2435evpipe_init (EV_P)
2436{
2437 if (!ev_is_active (&pipe_w))
2438 {
2439 int fds [2];
2440
2441# if EV_USE_EVENTFD
2442 fds [0] = -1;
2443 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
2444 if (fds [1] < 0 && errno == EINVAL)
2445 fds [1] = eventfd (0, 0);
2446
2447 if (fds [1] < 0)
2448# endif
2449 {
2450 while (pipe (fds))
2451 ev_syserr ("(libev) error creating signal/async pipe");
2452
2453 fd_intern (fds [0]);
2454 }
2455
2456 evpipe [0] = fds [0];
2457
2458 if (evpipe [1] < 0)
2459 evpipe [1] = fds [1]; /* first call, set write fd */
2460 else
2461 {
2462 /* on subsequent calls, do not change evpipe [1] */
2463 /* so that evpipe_write can always rely on its value. */
2464 /* this branch does not do anything sensible on windows, */
2465 /* so must not be executed on windows */
2466
2467 dup2 (fds [1], evpipe [1]);
2468 close (fds [1]);
2469 }
2470
2471 fd_intern (evpipe [1]);
2472
2473 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2474 ev_io_start (EV_A_ &pipe_w);
2475 ev_unref (EV_A); /* watcher should not keep loop alive */
2476 }
2477}
2478
1117inline_speed void 2479inline_speed void
1118fd_intern (int fd) 2480evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1119{ 2481{
1120#ifdef _WIN32 2482 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1121 unsigned long arg = 1;
1122 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1123#else
1124 fcntl (fd, F_SETFD, FD_CLOEXEC);
1125 fcntl (fd, F_SETFL, O_NONBLOCK);
1126#endif
1127}
1128 2483
1129static void noinline 2484 if (expect_true (*flag))
1130evpipe_init (EV_P) 2485 return;
1131{ 2486
1132 if (!ev_is_active (&pipe_w)) 2487 *flag = 1;
2488 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2489
2490 pipe_write_skipped = 1;
2491
2492 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2493
2494 if (pipe_write_wanted)
1133 { 2495 {
2496 int old_errno;
2497
2498 pipe_write_skipped = 0;
2499 ECB_MEMORY_FENCE_RELEASE;
2500
2501 old_errno = errno; /* save errno because write will clobber it */
2502
1134#if EV_USE_EVENTFD 2503#if EV_USE_EVENTFD
1135 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2504 if (evpipe [0] < 0)
1136 if (evfd < 0 && errno == EINVAL)
1137 evfd = eventfd (0, 0);
1138
1139 if (evfd >= 0)
1140 { 2505 {
1141 evpipe [0] = -1; 2506 uint64_t counter = 1;
1142 fd_intern (evfd); /* doing it twice doesn't hurt */ 2507 write (evpipe [1], &counter, sizeof (uint64_t));
1143 ev_io_set (&pipe_w, evfd, EV_READ);
1144 } 2508 }
1145 else 2509 else
1146#endif 2510#endif
1147 { 2511 {
1148 while (pipe (evpipe)) 2512#ifdef _WIN32
1149 ev_syserr ("(libev) error creating signal/async pipe"); 2513 WSABUF buf;
1150 2514 DWORD sent;
1151 fd_intern (evpipe [0]); 2515 buf.buf = (char *)&buf;
1152 fd_intern (evpipe [1]); 2516 buf.len = 1;
1153 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2517 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2518#else
2519 write (evpipe [1], &(evpipe [1]), 1);
2520#endif
1154 } 2521 }
1155
1156 ev_io_start (EV_A_ &pipe_w);
1157 ev_unref (EV_A); /* watcher should not keep loop alive */
1158 }
1159}
1160
1161inline_size void
1162evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1163{
1164 if (!*flag)
1165 {
1166 int old_errno = errno; /* save errno because write might clobber it */
1167
1168 *flag = 1;
1169
1170#if EV_USE_EVENTFD
1171 if (evfd >= 0)
1172 {
1173 uint64_t counter = 1;
1174 write (evfd, &counter, sizeof (uint64_t));
1175 }
1176 else
1177#endif
1178 write (evpipe [1], &old_errno, 1);
1179 2522
1180 errno = old_errno; 2523 errno = old_errno;
1181 } 2524 }
1182} 2525}
1183 2526
1184/* called whenever the libev signal pipe */ 2527/* called whenever the libev signal pipe */
1185/* got some events (signal, async) */ 2528/* got some events (signal, async) */
1186static void 2529static void
1187pipecb (EV_P_ ev_io *iow, int revents) 2530pipecb (EV_P_ ev_io *iow, int revents)
1188{ 2531{
2532 int i;
2533
2534 if (revents & EV_READ)
2535 {
1189#if EV_USE_EVENTFD 2536#if EV_USE_EVENTFD
1190 if (evfd >= 0) 2537 if (evpipe [0] < 0)
1191 { 2538 {
1192 uint64_t counter; 2539 uint64_t counter;
1193 read (evfd, &counter, sizeof (uint64_t)); 2540 read (evpipe [1], &counter, sizeof (uint64_t));
1194 } 2541 }
1195 else 2542 else
1196#endif 2543#endif
1197 { 2544 {
1198 char dummy; 2545 char dummy[4];
2546#ifdef _WIN32
2547 WSABUF buf;
2548 DWORD recvd;
2549 DWORD flags = 0;
2550 buf.buf = dummy;
2551 buf.len = sizeof (dummy);
2552 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2553#else
1199 read (evpipe [0], &dummy, 1); 2554 read (evpipe [0], &dummy, sizeof (dummy));
2555#endif
2556 }
2557 }
2558
2559 pipe_write_skipped = 0;
2560
2561 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2562
2563#if EV_SIGNAL_ENABLE
2564 if (sig_pending)
1200 } 2565 {
2566 sig_pending = 0;
1201 2567
1202 if (gotsig && ev_is_default_loop (EV_A)) 2568 ECB_MEMORY_FENCE;
1203 {
1204 int signum;
1205 gotsig = 0;
1206 2569
1207 for (signum = signalmax; signum--; ) 2570 for (i = EV_NSIG - 1; i--; )
1208 if (signals [signum].gotsig) 2571 if (expect_false (signals [i].pending))
1209 ev_feed_signal_event (EV_A_ signum + 1); 2572 ev_feed_signal_event (EV_A_ i + 1);
1210 } 2573 }
2574#endif
1211 2575
1212#if EV_ASYNC_ENABLE 2576#if EV_ASYNC_ENABLE
1213 if (gotasync) 2577 if (async_pending)
1214 { 2578 {
1215 int i; 2579 async_pending = 0;
1216 gotasync = 0; 2580
2581 ECB_MEMORY_FENCE;
1217 2582
1218 for (i = asynccnt; i--; ) 2583 for (i = asynccnt; i--; )
1219 if (asyncs [i]->sent) 2584 if (asyncs [i]->sent)
1220 { 2585 {
1221 asyncs [i]->sent = 0; 2586 asyncs [i]->sent = 0;
2587 ECB_MEMORY_FENCE_RELEASE;
1222 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2588 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1223 } 2589 }
1224 } 2590 }
1225#endif 2591#endif
1226} 2592}
1227 2593
1228/*****************************************************************************/ 2594/*****************************************************************************/
1229 2595
2596void
2597ev_feed_signal (int signum) EV_NOEXCEPT
2598{
2599#if EV_MULTIPLICITY
2600 EV_P;
2601 ECB_MEMORY_FENCE_ACQUIRE;
2602 EV_A = signals [signum - 1].loop;
2603
2604 if (!EV_A)
2605 return;
2606#endif
2607
2608 signals [signum - 1].pending = 1;
2609 evpipe_write (EV_A_ &sig_pending);
2610}
2611
1230static void 2612static void
1231ev_sighandler (int signum) 2613ev_sighandler (int signum)
1232{ 2614{
2615#ifdef _WIN32
2616 signal (signum, ev_sighandler);
2617#endif
2618
2619 ev_feed_signal (signum);
2620}
2621
2622noinline
2623void
2624ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
2625{
2626 WL w;
2627
2628 if (expect_false (signum <= 0 || signum >= EV_NSIG))
2629 return;
2630
2631 --signum;
2632
1233#if EV_MULTIPLICITY 2633#if EV_MULTIPLICITY
1234 struct ev_loop *loop = &default_loop_struct; 2634 /* it is permissible to try to feed a signal to the wrong loop */
1235#endif 2635 /* or, likely more useful, feeding a signal nobody is waiting for */
1236 2636
1237#if _WIN32 2637 if (expect_false (signals [signum].loop != EV_A))
1238 signal (signum, ev_sighandler);
1239#endif
1240
1241 signals [signum - 1].gotsig = 1;
1242 evpipe_write (EV_A_ &gotsig);
1243}
1244
1245void noinline
1246ev_feed_signal_event (EV_P_ int signum)
1247{
1248 WL w;
1249
1250#if EV_MULTIPLICITY
1251 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1252#endif
1253
1254 --signum;
1255
1256 if (signum < 0 || signum >= signalmax)
1257 return; 2638 return;
2639#endif
1258 2640
1259 signals [signum].gotsig = 0; 2641 signals [signum].pending = 0;
2642 ECB_MEMORY_FENCE_RELEASE;
1260 2643
1261 for (w = signals [signum].head; w; w = w->next) 2644 for (w = signals [signum].head; w; w = w->next)
1262 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2645 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1263} 2646}
1264 2647
1265#if EV_USE_SIGNALFD 2648#if EV_USE_SIGNALFD
1266static void 2649static void
1267sigfdcb (EV_P_ ev_io *iow, int revents) 2650sigfdcb (EV_P_ ev_io *iow, int revents)
1268{ 2651{
1269 struct signalfd_siginfo si[4], *sip; 2652 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1270 2653
1271 for (;;) 2654 for (;;)
1272 { 2655 {
1273 ssize_t res = read (sigfd, si, sizeof (si)); 2656 ssize_t res = read (sigfd, si, sizeof (si));
1274 2657
… …
1280 break; 2663 break;
1281 } 2664 }
1282} 2665}
1283#endif 2666#endif
1284 2667
2668#endif
2669
1285/*****************************************************************************/ 2670/*****************************************************************************/
1286 2671
2672#if EV_CHILD_ENABLE
1287static WL childs [EV_PID_HASHSIZE]; 2673static WL childs [EV_PID_HASHSIZE];
1288
1289#ifndef _WIN32
1290 2674
1291static ev_signal childev; 2675static ev_signal childev;
1292 2676
1293#ifndef WIFCONTINUED 2677#ifndef WIFCONTINUED
1294# define WIFCONTINUED(status) 0 2678# define WIFCONTINUED(status) 0
… …
1299child_reap (EV_P_ int chain, int pid, int status) 2683child_reap (EV_P_ int chain, int pid, int status)
1300{ 2684{
1301 ev_child *w; 2685 ev_child *w;
1302 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2686 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1303 2687
1304 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2688 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1305 { 2689 {
1306 if ((w->pid == pid || !w->pid) 2690 if ((w->pid == pid || !w->pid)
1307 && (!traced || (w->flags & 1))) 2691 && (!traced || (w->flags & 1)))
1308 { 2692 {
1309 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2693 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1334 /* make sure we are called again until all children have been reaped */ 2718 /* make sure we are called again until all children have been reaped */
1335 /* we need to do it this way so that the callback gets called before we continue */ 2719 /* we need to do it this way so that the callback gets called before we continue */
1336 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2720 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1337 2721
1338 child_reap (EV_A_ pid, pid, status); 2722 child_reap (EV_A_ pid, pid, status);
1339 if (EV_PID_HASHSIZE > 1) 2723 if ((EV_PID_HASHSIZE) > 1)
1340 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2724 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1341} 2725}
1342 2726
1343#endif 2727#endif
1344 2728
1345/*****************************************************************************/ 2729/*****************************************************************************/
1346 2730
2731#if EV_USE_IOCP
2732# include "ev_iocp.c"
2733#endif
1347#if EV_USE_PORT 2734#if EV_USE_PORT
1348# include "ev_port.c" 2735# include "ev_port.c"
1349#endif 2736#endif
1350#if EV_USE_KQUEUE 2737#if EV_USE_KQUEUE
1351# include "ev_kqueue.c" 2738# include "ev_kqueue.c"
1352#endif 2739#endif
1353#if EV_USE_EPOLL 2740#if EV_USE_EPOLL
1354# include "ev_epoll.c" 2741# include "ev_epoll.c"
1355#endif 2742#endif
2743#if EV_USE_LINUXAIO
2744# include "ev_linuxaio.c"
2745#endif
1356#if EV_USE_POLL 2746#if EV_USE_POLL
1357# include "ev_poll.c" 2747# include "ev_poll.c"
1358#endif 2748#endif
1359#if EV_USE_SELECT 2749#if EV_USE_SELECT
1360# include "ev_select.c" 2750# include "ev_select.c"
1361#endif 2751#endif
1362 2752
1363int 2753ecb_cold int
1364ev_version_major (void) 2754ev_version_major (void) EV_NOEXCEPT
1365{ 2755{
1366 return EV_VERSION_MAJOR; 2756 return EV_VERSION_MAJOR;
1367} 2757}
1368 2758
1369int 2759ecb_cold int
1370ev_version_minor (void) 2760ev_version_minor (void) EV_NOEXCEPT
1371{ 2761{
1372 return EV_VERSION_MINOR; 2762 return EV_VERSION_MINOR;
1373} 2763}
1374 2764
1375/* return true if we are running with elevated privileges and should ignore env variables */ 2765/* return true if we are running with elevated privileges and should ignore env variables */
1376int inline_size 2766inline_size ecb_cold int
1377enable_secure (void) 2767enable_secure (void)
1378{ 2768{
1379#ifdef _WIN32 2769#ifdef _WIN32
1380 return 0; 2770 return 0;
1381#else 2771#else
1382 return getuid () != geteuid () 2772 return getuid () != geteuid ()
1383 || getgid () != getegid (); 2773 || getgid () != getegid ();
1384#endif 2774#endif
1385} 2775}
1386 2776
2777ecb_cold
1387unsigned int 2778unsigned int
1388ev_supported_backends (void) 2779ev_supported_backends (void) EV_NOEXCEPT
1389{ 2780{
1390 unsigned int flags = 0; 2781 unsigned int flags = 0;
1391 2782
1392 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2783 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1393 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2784 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
1394 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 2785 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2786 if (EV_USE_LINUXAIO) flags |= EVBACKEND_LINUXAIO;
1395 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 2787 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
1396 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2788 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
1397 2789
1398 return flags; 2790 return flags;
1399} 2791}
1400 2792
2793ecb_cold
1401unsigned int 2794unsigned int
1402ev_recommended_backends (void) 2795ev_recommended_backends (void) EV_NOEXCEPT
1403{ 2796{
1404 unsigned int flags = ev_supported_backends (); 2797 unsigned int flags = ev_supported_backends ();
1405 2798
1406#ifndef __NetBSD__ 2799#ifndef __NetBSD__
1407 /* kqueue is borked on everything but netbsd apparently */ 2800 /* kqueue is borked on everything but netbsd apparently */
… …
1411#ifdef __APPLE__ 2804#ifdef __APPLE__
1412 /* only select works correctly on that "unix-certified" platform */ 2805 /* only select works correctly on that "unix-certified" platform */
1413 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2806 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1414 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 2807 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1415#endif 2808#endif
2809#ifdef __FreeBSD__
2810 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2811#endif
2812
2813 /* TODO: linuxaio is very experimental */
2814#if !EV_RECOMMEND_LINUXAIO
2815 flags &= ~EVBACKEND_LINUXAIO;
2816#endif
1416 2817
1417 return flags; 2818 return flags;
1418} 2819}
1419 2820
2821ecb_cold
1420unsigned int 2822unsigned int
1421ev_embeddable_backends (void) 2823ev_embeddable_backends (void) EV_NOEXCEPT
1422{ 2824{
1423 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2825 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1424 2826
1425 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2827 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1426 /* please fix it and tell me how to detect the fix */ 2828 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1427 flags &= ~EVBACKEND_EPOLL; 2829 flags &= ~EVBACKEND_EPOLL;
1428 2830
1429 return flags; 2831 return flags;
1430} 2832}
1431 2833
1432unsigned int 2834unsigned int
1433ev_backend (EV_P) 2835ev_backend (EV_P) EV_NOEXCEPT
1434{ 2836{
1435 return backend; 2837 return backend;
1436} 2838}
1437 2839
1438#if EV_MINIMAL < 2 2840#if EV_FEATURE_API
1439unsigned int 2841unsigned int
1440ev_loop_count (EV_P) 2842ev_iteration (EV_P) EV_NOEXCEPT
1441{ 2843{
1442 return loop_count; 2844 return loop_count;
1443} 2845}
1444 2846
1445unsigned int 2847unsigned int
1446ev_loop_depth (EV_P) 2848ev_depth (EV_P) EV_NOEXCEPT
1447{ 2849{
1448 return loop_depth; 2850 return loop_depth;
1449} 2851}
1450 2852
1451void 2853void
1452ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2854ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1453{ 2855{
1454 io_blocktime = interval; 2856 io_blocktime = interval;
1455} 2857}
1456 2858
1457void 2859void
1458ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2860ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1459{ 2861{
1460 timeout_blocktime = interval; 2862 timeout_blocktime = interval;
1461} 2863}
1462 2864
1463void 2865void
1464ev_set_userdata (EV_P_ void *data) 2866ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
1465{ 2867{
1466 userdata = data; 2868 userdata = data;
1467} 2869}
1468 2870
1469void * 2871void *
1470ev_userdata (EV_P) 2872ev_userdata (EV_P) EV_NOEXCEPT
1471{ 2873{
1472 return userdata; 2874 return userdata;
1473} 2875}
1474 2876
2877void
1475void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2878ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
1476{ 2879{
1477 invoke_cb = invoke_pending_cb; 2880 invoke_cb = invoke_pending_cb;
1478} 2881}
1479 2882
2883void
1480void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2884ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
1481{ 2885{
1482 release_cb = release; 2886 release_cb = release;
1483 acquire_cb = acquire; 2887 acquire_cb = acquire;
1484} 2888}
1485#endif 2889#endif
1486 2890
1487/* initialise a loop structure, must be zero-initialised */ 2891/* initialise a loop structure, must be zero-initialised */
1488static void noinline 2892noinline ecb_cold
2893static void
1489loop_init (EV_P_ unsigned int flags) 2894loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
1490{ 2895{
1491 if (!backend) 2896 if (!backend)
1492 { 2897 {
2898 origflags = flags;
2899
1493#if EV_USE_REALTIME 2900#if EV_USE_REALTIME
1494 if (!have_realtime) 2901 if (!have_realtime)
1495 { 2902 {
1496 struct timespec ts; 2903 struct timespec ts;
1497 2904
… …
1508 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 2915 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1509 have_monotonic = 1; 2916 have_monotonic = 1;
1510 } 2917 }
1511#endif 2918#endif
1512 2919
1513 ev_rt_now = ev_time ();
1514 mn_now = get_clock ();
1515 now_floor = mn_now;
1516 rtmn_diff = ev_rt_now - mn_now;
1517#if EV_MINIMAL < 2
1518 invoke_cb = ev_invoke_pending;
1519#endif
1520
1521 io_blocktime = 0.;
1522 timeout_blocktime = 0.;
1523 backend = 0;
1524 backend_fd = -1;
1525 gotasync = 0;
1526#if EV_USE_INOTIFY
1527 fs_fd = -2;
1528#endif
1529#if EV_USE_SIGNALFD
1530 sigfd = -2;
1531#endif
1532
1533 /* pid check not overridable via env */ 2920 /* pid check not overridable via env */
1534#ifndef _WIN32 2921#ifndef _WIN32
1535 if (flags & EVFLAG_FORKCHECK) 2922 if (flags & EVFLAG_FORKCHECK)
1536 curpid = getpid (); 2923 curpid = getpid ();
1537#endif 2924#endif
… …
1539 if (!(flags & EVFLAG_NOENV) 2926 if (!(flags & EVFLAG_NOENV)
1540 && !enable_secure () 2927 && !enable_secure ()
1541 && getenv ("LIBEV_FLAGS")) 2928 && getenv ("LIBEV_FLAGS"))
1542 flags = atoi (getenv ("LIBEV_FLAGS")); 2929 flags = atoi (getenv ("LIBEV_FLAGS"));
1543 2930
1544 if (!(flags & 0x0000ffffU)) 2931 ev_rt_now = ev_time ();
2932 mn_now = get_clock ();
2933 now_floor = mn_now;
2934 rtmn_diff = ev_rt_now - mn_now;
2935#if EV_FEATURE_API
2936 invoke_cb = ev_invoke_pending;
2937#endif
2938
2939 io_blocktime = 0.;
2940 timeout_blocktime = 0.;
2941 backend = 0;
2942 backend_fd = -1;
2943 sig_pending = 0;
2944#if EV_ASYNC_ENABLE
2945 async_pending = 0;
2946#endif
2947 pipe_write_skipped = 0;
2948 pipe_write_wanted = 0;
2949 evpipe [0] = -1;
2950 evpipe [1] = -1;
2951#if EV_USE_INOTIFY
2952 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2953#endif
2954#if EV_USE_SIGNALFD
2955 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
2956#endif
2957
2958 if (!(flags & EVBACKEND_MASK))
1545 flags |= ev_recommended_backends (); 2959 flags |= ev_recommended_backends ();
1546 2960
2961#if EV_USE_IOCP
2962 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2963#endif
1547#if EV_USE_PORT 2964#if EV_USE_PORT
1548 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2965 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1549#endif 2966#endif
1550#if EV_USE_KQUEUE 2967#if EV_USE_KQUEUE
1551 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2968 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
2969#endif
2970#if EV_USE_LINUXAIO
2971 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
1552#endif 2972#endif
1553#if EV_USE_EPOLL 2973#if EV_USE_EPOLL
1554 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 2974 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
1555#endif 2975#endif
1556#if EV_USE_POLL 2976#if EV_USE_POLL
1557 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 2977 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
1558#endif 2978#endif
1559#if EV_USE_SELECT 2979#if EV_USE_SELECT
1560 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2980 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
1561#endif 2981#endif
1562 2982
1563 ev_prepare_init (&pending_w, pendingcb); 2983 ev_prepare_init (&pending_w, pendingcb);
1564 2984
2985#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1565 ev_init (&pipe_w, pipecb); 2986 ev_init (&pipe_w, pipecb);
1566 ev_set_priority (&pipe_w, EV_MAXPRI); 2987 ev_set_priority (&pipe_w, EV_MAXPRI);
2988#endif
1567 } 2989 }
1568} 2990}
1569 2991
1570/* free up a loop structure */ 2992/* free up a loop structure */
1571static void noinline 2993ecb_cold
2994void
1572loop_destroy (EV_P) 2995ev_loop_destroy (EV_P)
1573{ 2996{
1574 int i; 2997 int i;
2998
2999#if EV_MULTIPLICITY
3000 /* mimic free (0) */
3001 if (!EV_A)
3002 return;
3003#endif
3004
3005#if EV_CLEANUP_ENABLE
3006 /* queue cleanup watchers (and execute them) */
3007 if (expect_false (cleanupcnt))
3008 {
3009 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
3010 EV_INVOKE_PENDING;
3011 }
3012#endif
3013
3014#if EV_CHILD_ENABLE
3015 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
3016 {
3017 ev_ref (EV_A); /* child watcher */
3018 ev_signal_stop (EV_A_ &childev);
3019 }
3020#endif
1575 3021
1576 if (ev_is_active (&pipe_w)) 3022 if (ev_is_active (&pipe_w))
1577 { 3023 {
1578 /*ev_ref (EV_A);*/ 3024 /*ev_ref (EV_A);*/
1579 /*ev_io_stop (EV_A_ &pipe_w);*/ 3025 /*ev_io_stop (EV_A_ &pipe_w);*/
1580 3026
1581#if EV_USE_EVENTFD 3027 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1582 if (evfd >= 0) 3028 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1583 close (evfd);
1584#endif
1585
1586 if (evpipe [0] >= 0)
1587 {
1588 close (evpipe [0]);
1589 close (evpipe [1]);
1590 }
1591 } 3029 }
1592 3030
1593#if EV_USE_SIGNALFD 3031#if EV_USE_SIGNALFD
1594 if (ev_is_active (&sigfd_w)) 3032 if (ev_is_active (&sigfd_w))
1595 {
1596 /*ev_ref (EV_A);*/
1597 /*ev_io_stop (EV_A_ &sigfd_w);*/
1598
1599 close (sigfd); 3033 close (sigfd);
1600 }
1601#endif 3034#endif
1602 3035
1603#if EV_USE_INOTIFY 3036#if EV_USE_INOTIFY
1604 if (fs_fd >= 0) 3037 if (fs_fd >= 0)
1605 close (fs_fd); 3038 close (fs_fd);
1606#endif 3039#endif
1607 3040
1608 if (backend_fd >= 0) 3041 if (backend_fd >= 0)
1609 close (backend_fd); 3042 close (backend_fd);
1610 3043
3044#if EV_USE_IOCP
3045 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
3046#endif
1611#if EV_USE_PORT 3047#if EV_USE_PORT
1612 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3048 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1613#endif 3049#endif
1614#if EV_USE_KQUEUE 3050#if EV_USE_KQUEUE
1615 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3051 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
3052#endif
3053#if EV_USE_LINUXAIO
3054 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
1616#endif 3055#endif
1617#if EV_USE_EPOLL 3056#if EV_USE_EPOLL
1618 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3057 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
1619#endif 3058#endif
1620#if EV_USE_POLL 3059#if EV_USE_POLL
1621 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3060 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
1622#endif 3061#endif
1623#if EV_USE_SELECT 3062#if EV_USE_SELECT
1624 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3063 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
1625#endif 3064#endif
1626 3065
1627 for (i = NUMPRI; i--; ) 3066 for (i = NUMPRI; i--; )
1628 { 3067 {
1629 array_free (pending, [i]); 3068 array_free (pending, [i]);
1630#if EV_IDLE_ENABLE 3069#if EV_IDLE_ENABLE
1631 array_free (idle, [i]); 3070 array_free (idle, [i]);
1632#endif 3071#endif
1633 } 3072 }
1634 3073
1635 ev_free (anfds); anfdmax = 0; 3074 ev_free (anfds); anfds = 0; anfdmax = 0;
1636 3075
1637 /* have to use the microsoft-never-gets-it-right macro */ 3076 /* have to use the microsoft-never-gets-it-right macro */
1638 array_free (rfeed, EMPTY); 3077 array_free (rfeed, EMPTY);
1639 array_free (fdchange, EMPTY); 3078 array_free (fdchange, EMPTY);
1640 array_free (timer, EMPTY); 3079 array_free (timer, EMPTY);
… …
1642 array_free (periodic, EMPTY); 3081 array_free (periodic, EMPTY);
1643#endif 3082#endif
1644#if EV_FORK_ENABLE 3083#if EV_FORK_ENABLE
1645 array_free (fork, EMPTY); 3084 array_free (fork, EMPTY);
1646#endif 3085#endif
3086#if EV_CLEANUP_ENABLE
3087 array_free (cleanup, EMPTY);
3088#endif
1647 array_free (prepare, EMPTY); 3089 array_free (prepare, EMPTY);
1648 array_free (check, EMPTY); 3090 array_free (check, EMPTY);
1649#if EV_ASYNC_ENABLE 3091#if EV_ASYNC_ENABLE
1650 array_free (async, EMPTY); 3092 array_free (async, EMPTY);
1651#endif 3093#endif
1652 3094
1653 backend = 0; 3095 backend = 0;
3096
3097#if EV_MULTIPLICITY
3098 if (ev_is_default_loop (EV_A))
3099#endif
3100 ev_default_loop_ptr = 0;
3101#if EV_MULTIPLICITY
3102 else
3103 ev_free (EV_A);
3104#endif
1654} 3105}
1655 3106
1656#if EV_USE_INOTIFY 3107#if EV_USE_INOTIFY
1657inline_size void infy_fork (EV_P); 3108inline_size void infy_fork (EV_P);
1658#endif 3109#endif
1659 3110
1660inline_size void 3111inline_size void
1661loop_fork (EV_P) 3112loop_fork (EV_P)
1662{ 3113{
1663#if EV_USE_PORT 3114#if EV_USE_PORT
1664 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3115 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1665#endif 3116#endif
1666#if EV_USE_KQUEUE 3117#if EV_USE_KQUEUE
1667 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 3118 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
3119#endif
3120#if EV_USE_LINUXAIO
3121 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
1668#endif 3122#endif
1669#if EV_USE_EPOLL 3123#if EV_USE_EPOLL
1670 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3124 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
1671#endif 3125#endif
1672#if EV_USE_INOTIFY 3126#if EV_USE_INOTIFY
1673 infy_fork (EV_A); 3127 infy_fork (EV_A);
1674#endif 3128#endif
1675 3129
3130#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1676 if (ev_is_active (&pipe_w)) 3131 if (ev_is_active (&pipe_w) && postfork != 2)
1677 { 3132 {
1678 /* this "locks" the handlers against writing to the pipe */ 3133 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1679 /* while we modify the fd vars */
1680 gotsig = 1;
1681#if EV_ASYNC_ENABLE
1682 gotasync = 1;
1683#endif
1684 3134
1685 ev_ref (EV_A); 3135 ev_ref (EV_A);
1686 ev_io_stop (EV_A_ &pipe_w); 3136 ev_io_stop (EV_A_ &pipe_w);
1687 3137
1688#if EV_USE_EVENTFD
1689 if (evfd >= 0)
1690 close (evfd);
1691#endif
1692
1693 if (evpipe [0] >= 0) 3138 if (evpipe [0] >= 0)
1694 { 3139 EV_WIN32_CLOSE_FD (evpipe [0]);
1695 close (evpipe [0]);
1696 close (evpipe [1]);
1697 }
1698 3140
1699 evpipe_init (EV_A); 3141 evpipe_init (EV_A);
1700 /* now iterate over everything, in case we missed something */ 3142 /* iterate over everything, in case we missed something before */
1701 pipecb (EV_A_ &pipe_w, EV_READ); 3143 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1702 } 3144 }
3145#endif
1703 3146
1704 postfork = 0; 3147 postfork = 0;
1705} 3148}
1706 3149
1707#if EV_MULTIPLICITY 3150#if EV_MULTIPLICITY
1708 3151
3152ecb_cold
1709struct ev_loop * 3153struct ev_loop *
1710ev_loop_new (unsigned int flags) 3154ev_loop_new (unsigned int flags) EV_NOEXCEPT
1711{ 3155{
1712 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3156 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1713 3157
1714 memset (loop, 0, sizeof (struct ev_loop)); 3158 memset (EV_A, 0, sizeof (struct ev_loop));
1715 loop_init (EV_A_ flags); 3159 loop_init (EV_A_ flags);
1716 3160
1717 if (ev_backend (EV_A)) 3161 if (ev_backend (EV_A))
1718 return loop; 3162 return EV_A;
1719 3163
3164 ev_free (EV_A);
1720 return 0; 3165 return 0;
1721} 3166}
1722 3167
1723void
1724ev_loop_destroy (EV_P)
1725{
1726 loop_destroy (EV_A);
1727 ev_free (loop);
1728}
1729
1730void
1731ev_loop_fork (EV_P)
1732{
1733 postfork = 1; /* must be in line with ev_default_fork */
1734}
1735#endif /* multiplicity */ 3168#endif /* multiplicity */
1736 3169
1737#if EV_VERIFY 3170#if EV_VERIFY
1738static void noinline 3171noinline ecb_cold
3172static void
1739verify_watcher (EV_P_ W w) 3173verify_watcher (EV_P_ W w)
1740{ 3174{
1741 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3175 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1742 3176
1743 if (w->pending) 3177 if (w->pending)
1744 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3178 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1745} 3179}
1746 3180
1747static void noinline 3181noinline ecb_cold
3182static void
1748verify_heap (EV_P_ ANHE *heap, int N) 3183verify_heap (EV_P_ ANHE *heap, int N)
1749{ 3184{
1750 int i; 3185 int i;
1751 3186
1752 for (i = HEAP0; i < N + HEAP0; ++i) 3187 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1757 3192
1758 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3193 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1759 } 3194 }
1760} 3195}
1761 3196
1762static void noinline 3197noinline ecb_cold
3198static void
1763array_verify (EV_P_ W *ws, int cnt) 3199array_verify (EV_P_ W *ws, int cnt)
1764{ 3200{
1765 while (cnt--) 3201 while (cnt--)
1766 { 3202 {
1767 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3203 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1768 verify_watcher (EV_A_ ws [cnt]); 3204 verify_watcher (EV_A_ ws [cnt]);
1769 } 3205 }
1770} 3206}
1771#endif 3207#endif
1772 3208
1773#if EV_MINIMAL < 2 3209#if EV_FEATURE_API
1774void 3210void ecb_cold
1775ev_loop_verify (EV_P) 3211ev_verify (EV_P) EV_NOEXCEPT
1776{ 3212{
1777#if EV_VERIFY 3213#if EV_VERIFY
1778 int i; 3214 int i;
1779 WL w; 3215 WL w, w2;
1780 3216
1781 assert (activecnt >= -1); 3217 assert (activecnt >= -1);
1782 3218
1783 assert (fdchangemax >= fdchangecnt); 3219 assert (fdchangemax >= fdchangecnt);
1784 for (i = 0; i < fdchangecnt; ++i) 3220 for (i = 0; i < fdchangecnt; ++i)
1785 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3221 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1786 3222
1787 assert (anfdmax >= 0); 3223 assert (anfdmax >= 0);
1788 for (i = 0; i < anfdmax; ++i) 3224 for (i = 0; i < anfdmax; ++i)
3225 {
3226 int j = 0;
3227
1789 for (w = anfds [i].head; w; w = w->next) 3228 for (w = w2 = anfds [i].head; w; w = w->next)
1790 { 3229 {
1791 verify_watcher (EV_A_ (W)w); 3230 verify_watcher (EV_A_ (W)w);
3231
3232 if (j++ & 1)
3233 {
3234 assert (("libev: io watcher list contains a loop", w != w2));
3235 w2 = w2->next;
3236 }
3237
1792 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3238 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1793 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 3239 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1794 } 3240 }
3241 }
1795 3242
1796 assert (timermax >= timercnt); 3243 assert (timermax >= timercnt);
1797 verify_heap (EV_A_ timers, timercnt); 3244 verify_heap (EV_A_ timers, timercnt);
1798 3245
1799#if EV_PERIODIC_ENABLE 3246#if EV_PERIODIC_ENABLE
… …
1814#if EV_FORK_ENABLE 3261#if EV_FORK_ENABLE
1815 assert (forkmax >= forkcnt); 3262 assert (forkmax >= forkcnt);
1816 array_verify (EV_A_ (W *)forks, forkcnt); 3263 array_verify (EV_A_ (W *)forks, forkcnt);
1817#endif 3264#endif
1818 3265
3266#if EV_CLEANUP_ENABLE
3267 assert (cleanupmax >= cleanupcnt);
3268 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
3269#endif
3270
1819#if EV_ASYNC_ENABLE 3271#if EV_ASYNC_ENABLE
1820 assert (asyncmax >= asynccnt); 3272 assert (asyncmax >= asynccnt);
1821 array_verify (EV_A_ (W *)asyncs, asynccnt); 3273 array_verify (EV_A_ (W *)asyncs, asynccnt);
1822#endif 3274#endif
1823 3275
3276#if EV_PREPARE_ENABLE
1824 assert (preparemax >= preparecnt); 3277 assert (preparemax >= preparecnt);
1825 array_verify (EV_A_ (W *)prepares, preparecnt); 3278 array_verify (EV_A_ (W *)prepares, preparecnt);
3279#endif
1826 3280
3281#if EV_CHECK_ENABLE
1827 assert (checkmax >= checkcnt); 3282 assert (checkmax >= checkcnt);
1828 array_verify (EV_A_ (W *)checks, checkcnt); 3283 array_verify (EV_A_ (W *)checks, checkcnt);
3284#endif
1829 3285
1830# if 0 3286# if 0
3287#if EV_CHILD_ENABLE
1831 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 3288 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1832 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 3289 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
3290#endif
1833# endif 3291# endif
1834#endif 3292#endif
1835} 3293}
1836#endif 3294#endif
1837 3295
1838#if EV_MULTIPLICITY 3296#if EV_MULTIPLICITY
3297ecb_cold
1839struct ev_loop * 3298struct ev_loop *
1840ev_default_loop_init (unsigned int flags)
1841#else 3299#else
1842int 3300int
3301#endif
1843ev_default_loop (unsigned int flags) 3302ev_default_loop (unsigned int flags) EV_NOEXCEPT
1844#endif
1845{ 3303{
1846 if (!ev_default_loop_ptr) 3304 if (!ev_default_loop_ptr)
1847 { 3305 {
1848#if EV_MULTIPLICITY 3306#if EV_MULTIPLICITY
1849 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 3307 EV_P = ev_default_loop_ptr = &default_loop_struct;
1850#else 3308#else
1851 ev_default_loop_ptr = 1; 3309 ev_default_loop_ptr = 1;
1852#endif 3310#endif
1853 3311
1854 loop_init (EV_A_ flags); 3312 loop_init (EV_A_ flags);
1855 3313
1856 if (ev_backend (EV_A)) 3314 if (ev_backend (EV_A))
1857 { 3315 {
1858#ifndef _WIN32 3316#if EV_CHILD_ENABLE
1859 ev_signal_init (&childev, childcb, SIGCHLD); 3317 ev_signal_init (&childev, childcb, SIGCHLD);
1860 ev_set_priority (&childev, EV_MAXPRI); 3318 ev_set_priority (&childev, EV_MAXPRI);
1861 ev_signal_start (EV_A_ &childev); 3319 ev_signal_start (EV_A_ &childev);
1862 ev_unref (EV_A); /* child watcher should not keep loop alive */ 3320 ev_unref (EV_A); /* child watcher should not keep loop alive */
1863#endif 3321#endif
… …
1868 3326
1869 return ev_default_loop_ptr; 3327 return ev_default_loop_ptr;
1870} 3328}
1871 3329
1872void 3330void
1873ev_default_destroy (void) 3331ev_loop_fork (EV_P) EV_NOEXCEPT
1874{ 3332{
1875#if EV_MULTIPLICITY 3333 postfork = 1;
1876 struct ev_loop *loop = ev_default_loop_ptr;
1877#endif
1878
1879 ev_default_loop_ptr = 0;
1880
1881#ifndef _WIN32
1882 ev_ref (EV_A); /* child watcher */
1883 ev_signal_stop (EV_A_ &childev);
1884#endif
1885
1886 loop_destroy (EV_A);
1887}
1888
1889void
1890ev_default_fork (void)
1891{
1892#if EV_MULTIPLICITY
1893 struct ev_loop *loop = ev_default_loop_ptr;
1894#endif
1895
1896 postfork = 1; /* must be in line with ev_loop_fork */
1897} 3334}
1898 3335
1899/*****************************************************************************/ 3336/*****************************************************************************/
1900 3337
1901void 3338void
… …
1903{ 3340{
1904 EV_CB_INVOKE ((W)w, revents); 3341 EV_CB_INVOKE ((W)w, revents);
1905} 3342}
1906 3343
1907unsigned int 3344unsigned int
1908ev_pending_count (EV_P) 3345ev_pending_count (EV_P) EV_NOEXCEPT
1909{ 3346{
1910 int pri; 3347 int pri;
1911 unsigned int count = 0; 3348 unsigned int count = 0;
1912 3349
1913 for (pri = NUMPRI; pri--; ) 3350 for (pri = NUMPRI; pri--; )
1914 count += pendingcnt [pri]; 3351 count += pendingcnt [pri];
1915 3352
1916 return count; 3353 return count;
1917} 3354}
1918 3355
1919void noinline 3356noinline
3357void
1920ev_invoke_pending (EV_P) 3358ev_invoke_pending (EV_P)
1921{ 3359{
1922 int pri; 3360 pendingpri = NUMPRI;
1923 3361
1924 for (pri = NUMPRI; pri--; ) 3362 do
3363 {
3364 --pendingpri;
3365
3366 /* pendingpri possibly gets modified in the inner loop */
1925 while (pendingcnt [pri]) 3367 while (pendingcnt [pendingpri])
1926 { 3368 {
1927 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3369 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
1928 3370
1929 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1930 /* ^ this is no longer true, as pending_w could be here */
1931
1932 p->w->pending = 0; 3371 p->w->pending = 0;
1933 EV_CB_INVOKE (p->w, p->events); 3372 EV_CB_INVOKE (p->w, p->events);
1934 EV_FREQUENT_CHECK; 3373 EV_FREQUENT_CHECK;
1935 } 3374 }
3375 }
3376 while (pendingpri);
1936} 3377}
1937 3378
1938#if EV_IDLE_ENABLE 3379#if EV_IDLE_ENABLE
1939/* make idle watchers pending. this handles the "call-idle */ 3380/* make idle watchers pending. this handles the "call-idle */
1940/* only when higher priorities are idle" logic */ 3381/* only when higher priorities are idle" logic */
… …
1992 EV_FREQUENT_CHECK; 3433 EV_FREQUENT_CHECK;
1993 feed_reverse (EV_A_ (W)w); 3434 feed_reverse (EV_A_ (W)w);
1994 } 3435 }
1995 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 3436 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1996 3437
1997 feed_reverse_done (EV_A_ EV_TIMEOUT); 3438 feed_reverse_done (EV_A_ EV_TIMER);
1998 } 3439 }
1999} 3440}
2000 3441
2001#if EV_PERIODIC_ENABLE 3442#if EV_PERIODIC_ENABLE
3443
3444noinline
3445static void
3446periodic_recalc (EV_P_ ev_periodic *w)
3447{
3448 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3449 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3450
3451 /* the above almost always errs on the low side */
3452 while (at <= ev_rt_now)
3453 {
3454 ev_tstamp nat = at + w->interval;
3455
3456 /* when resolution fails us, we use ev_rt_now */
3457 if (expect_false (nat == at))
3458 {
3459 at = ev_rt_now;
3460 break;
3461 }
3462
3463 at = nat;
3464 }
3465
3466 ev_at (w) = at;
3467}
3468
2002/* make periodics pending */ 3469/* make periodics pending */
2003inline_size void 3470inline_size void
2004periodics_reify (EV_P) 3471periodics_reify (EV_P)
2005{ 3472{
2006 EV_FREQUENT_CHECK; 3473 EV_FREQUENT_CHECK;
2007 3474
2008 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3475 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2009 { 3476 {
2010 int feed_count = 0;
2011
2012 do 3477 do
2013 { 3478 {
2014 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3479 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2015 3480
2016 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3481 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2025 ANHE_at_cache (periodics [HEAP0]); 3490 ANHE_at_cache (periodics [HEAP0]);
2026 downheap (periodics, periodiccnt, HEAP0); 3491 downheap (periodics, periodiccnt, HEAP0);
2027 } 3492 }
2028 else if (w->interval) 3493 else if (w->interval)
2029 { 3494 {
2030 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3495 periodic_recalc (EV_A_ w);
2031 /* if next trigger time is not sufficiently in the future, put it there */
2032 /* this might happen because of floating point inexactness */
2033 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2034 {
2035 ev_at (w) += w->interval;
2036
2037 /* if interval is unreasonably low we might still have a time in the past */
2038 /* so correct this. this will make the periodic very inexact, but the user */
2039 /* has effectively asked to get triggered more often than possible */
2040 if (ev_at (w) < ev_rt_now)
2041 ev_at (w) = ev_rt_now;
2042 }
2043
2044 ANHE_at_cache (periodics [HEAP0]); 3496 ANHE_at_cache (periodics [HEAP0]);
2045 downheap (periodics, periodiccnt, HEAP0); 3497 downheap (periodics, periodiccnt, HEAP0);
2046 } 3498 }
2047 else 3499 else
2048 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3500 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2055 feed_reverse_done (EV_A_ EV_PERIODIC); 3507 feed_reverse_done (EV_A_ EV_PERIODIC);
2056 } 3508 }
2057} 3509}
2058 3510
2059/* simply recalculate all periodics */ 3511/* simply recalculate all periodics */
2060/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 3512/* TODO: maybe ensure that at least one event happens when jumping forward? */
2061static void noinline 3513noinline ecb_cold
3514static void
2062periodics_reschedule (EV_P) 3515periodics_reschedule (EV_P)
2063{ 3516{
2064 int i; 3517 int i;
2065 3518
2066 /* adjust periodics after time jump */ 3519 /* adjust periodics after time jump */
… …
2069 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3522 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2070 3523
2071 if (w->reschedule_cb) 3524 if (w->reschedule_cb)
2072 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3525 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2073 else if (w->interval) 3526 else if (w->interval)
2074 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3527 periodic_recalc (EV_A_ w);
2075 3528
2076 ANHE_at_cache (periodics [i]); 3529 ANHE_at_cache (periodics [i]);
2077 } 3530 }
2078 3531
2079 reheap (periodics, periodiccnt); 3532 reheap (periodics, periodiccnt);
2080} 3533}
2081#endif 3534#endif
2082 3535
2083/* adjust all timers by a given offset */ 3536/* adjust all timers by a given offset */
2084static void noinline 3537noinline ecb_cold
3538static void
2085timers_reschedule (EV_P_ ev_tstamp adjust) 3539timers_reschedule (EV_P_ ev_tstamp adjust)
2086{ 3540{
2087 int i; 3541 int i;
2088 3542
2089 for (i = 0; i < timercnt; ++i) 3543 for (i = 0; i < timercnt; ++i)
… …
2093 ANHE_at_cache (*he); 3547 ANHE_at_cache (*he);
2094 } 3548 }
2095} 3549}
2096 3550
2097/* fetch new monotonic and realtime times from the kernel */ 3551/* fetch new monotonic and realtime times from the kernel */
2098/* also detetc if there was a timejump, and act accordingly */ 3552/* also detect if there was a timejump, and act accordingly */
2099inline_speed void 3553inline_speed void
2100time_update (EV_P_ ev_tstamp max_block) 3554time_update (EV_P_ ev_tstamp max_block)
2101{ 3555{
2102#if EV_USE_MONOTONIC 3556#if EV_USE_MONOTONIC
2103 if (expect_true (have_monotonic)) 3557 if (expect_true (have_monotonic))
… …
2126 * doesn't hurt either as we only do this on time-jumps or 3580 * doesn't hurt either as we only do this on time-jumps or
2127 * in the unlikely event of having been preempted here. 3581 * in the unlikely event of having been preempted here.
2128 */ 3582 */
2129 for (i = 4; --i; ) 3583 for (i = 4; --i; )
2130 { 3584 {
3585 ev_tstamp diff;
2131 rtmn_diff = ev_rt_now - mn_now; 3586 rtmn_diff = ev_rt_now - mn_now;
2132 3587
3588 diff = odiff - rtmn_diff;
3589
2133 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3590 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2134 return; /* all is well */ 3591 return; /* all is well */
2135 3592
2136 ev_rt_now = ev_time (); 3593 ev_rt_now = ev_time ();
2137 mn_now = get_clock (); 3594 mn_now = get_clock ();
2138 now_floor = mn_now; 3595 now_floor = mn_now;
… …
2160 3617
2161 mn_now = ev_rt_now; 3618 mn_now = ev_rt_now;
2162 } 3619 }
2163} 3620}
2164 3621
2165void 3622int
2166ev_loop (EV_P_ int flags) 3623ev_run (EV_P_ int flags)
2167{ 3624{
2168#if EV_MINIMAL < 2 3625#if EV_FEATURE_API
2169 ++loop_depth; 3626 ++loop_depth;
2170#endif 3627#endif
2171 3628
2172 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 3629 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2173 3630
2174 loop_done = EVUNLOOP_CANCEL; 3631 loop_done = EVBREAK_CANCEL;
2175 3632
2176 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 3633 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2177 3634
2178 do 3635 do
2179 { 3636 {
2180#if EV_VERIFY >= 2 3637#if EV_VERIFY >= 2
2181 ev_loop_verify (EV_A); 3638 ev_verify (EV_A);
2182#endif 3639#endif
2183 3640
2184#ifndef _WIN32 3641#ifndef _WIN32
2185 if (expect_false (curpid)) /* penalise the forking check even more */ 3642 if (expect_false (curpid)) /* penalise the forking check even more */
2186 if (expect_false (getpid () != curpid)) 3643 if (expect_false (getpid () != curpid))
… …
2198 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3655 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2199 EV_INVOKE_PENDING; 3656 EV_INVOKE_PENDING;
2200 } 3657 }
2201#endif 3658#endif
2202 3659
3660#if EV_PREPARE_ENABLE
2203 /* queue prepare watchers (and execute them) */ 3661 /* queue prepare watchers (and execute them) */
2204 if (expect_false (preparecnt)) 3662 if (expect_false (preparecnt))
2205 { 3663 {
2206 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3664 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2207 EV_INVOKE_PENDING; 3665 EV_INVOKE_PENDING;
2208 } 3666 }
3667#endif
2209 3668
2210 if (expect_false (loop_done)) 3669 if (expect_false (loop_done))
2211 break; 3670 break;
2212 3671
2213 /* we might have forked, so reify kernel state if necessary */ 3672 /* we might have forked, so reify kernel state if necessary */
… …
2220 /* calculate blocking time */ 3679 /* calculate blocking time */
2221 { 3680 {
2222 ev_tstamp waittime = 0.; 3681 ev_tstamp waittime = 0.;
2223 ev_tstamp sleeptime = 0.; 3682 ev_tstamp sleeptime = 0.;
2224 3683
3684 /* remember old timestamp for io_blocktime calculation */
3685 ev_tstamp prev_mn_now = mn_now;
3686
3687 /* update time to cancel out callback processing overhead */
3688 time_update (EV_A_ 1e100);
3689
3690 /* from now on, we want a pipe-wake-up */
3691 pipe_write_wanted = 1;
3692
3693 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3694
2225 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3695 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2226 { 3696 {
2227 /* remember old timestamp for io_blocktime calculation */
2228 ev_tstamp prev_mn_now = mn_now;
2229
2230 /* update time to cancel out callback processing overhead */
2231 time_update (EV_A_ 1e100);
2232
2233 waittime = MAX_BLOCKTIME; 3697 waittime = MAX_BLOCKTIME;
2234 3698
2235 if (timercnt) 3699 if (timercnt)
2236 { 3700 {
2237 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3701 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2238 if (waittime > to) waittime = to; 3702 if (waittime > to) waittime = to;
2239 } 3703 }
2240 3704
2241#if EV_PERIODIC_ENABLE 3705#if EV_PERIODIC_ENABLE
2242 if (periodiccnt) 3706 if (periodiccnt)
2243 { 3707 {
2244 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3708 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2245 if (waittime > to) waittime = to; 3709 if (waittime > to) waittime = to;
2246 } 3710 }
2247#endif 3711#endif
2248 3712
2249 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3713 /* don't let timeouts decrease the waittime below timeout_blocktime */
2250 if (expect_false (waittime < timeout_blocktime)) 3714 if (expect_false (waittime < timeout_blocktime))
2251 waittime = timeout_blocktime; 3715 waittime = timeout_blocktime;
3716
3717 /* at this point, we NEED to wait, so we have to ensure */
3718 /* to pass a minimum nonzero value to the backend */
3719 if (expect_false (waittime < backend_mintime))
3720 waittime = backend_mintime;
2252 3721
2253 /* extra check because io_blocktime is commonly 0 */ 3722 /* extra check because io_blocktime is commonly 0 */
2254 if (expect_false (io_blocktime)) 3723 if (expect_false (io_blocktime))
2255 { 3724 {
2256 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3725 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2257 3726
2258 if (sleeptime > waittime - backend_fudge) 3727 if (sleeptime > waittime - backend_mintime)
2259 sleeptime = waittime - backend_fudge; 3728 sleeptime = waittime - backend_mintime;
2260 3729
2261 if (expect_true (sleeptime > 0.)) 3730 if (expect_true (sleeptime > 0.))
2262 { 3731 {
2263 ev_sleep (sleeptime); 3732 ev_sleep (sleeptime);
2264 waittime -= sleeptime; 3733 waittime -= sleeptime;
2265 } 3734 }
2266 } 3735 }
2267 } 3736 }
2268 3737
2269#if EV_MINIMAL < 2 3738#if EV_FEATURE_API
2270 ++loop_count; 3739 ++loop_count;
2271#endif 3740#endif
2272 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3741 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2273 backend_poll (EV_A_ waittime); 3742 backend_poll (EV_A_ waittime);
2274 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 3743 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3744
3745 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3746
3747 ECB_MEMORY_FENCE_ACQUIRE;
3748 if (pipe_write_skipped)
3749 {
3750 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3751 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3752 }
3753
2275 3754
2276 /* update ev_rt_now, do magic */ 3755 /* update ev_rt_now, do magic */
2277 time_update (EV_A_ waittime + sleeptime); 3756 time_update (EV_A_ waittime + sleeptime);
2278 } 3757 }
2279 3758
… …
2286#if EV_IDLE_ENABLE 3765#if EV_IDLE_ENABLE
2287 /* queue idle watchers unless other events are pending */ 3766 /* queue idle watchers unless other events are pending */
2288 idle_reify (EV_A); 3767 idle_reify (EV_A);
2289#endif 3768#endif
2290 3769
3770#if EV_CHECK_ENABLE
2291 /* queue check watchers, to be executed first */ 3771 /* queue check watchers, to be executed first */
2292 if (expect_false (checkcnt)) 3772 if (expect_false (checkcnt))
2293 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3773 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3774#endif
2294 3775
2295 EV_INVOKE_PENDING; 3776 EV_INVOKE_PENDING;
2296 } 3777 }
2297 while (expect_true ( 3778 while (expect_true (
2298 activecnt 3779 activecnt
2299 && !loop_done 3780 && !loop_done
2300 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3781 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2301 )); 3782 ));
2302 3783
2303 if (loop_done == EVUNLOOP_ONE) 3784 if (loop_done == EVBREAK_ONE)
2304 loop_done = EVUNLOOP_CANCEL; 3785 loop_done = EVBREAK_CANCEL;
2305 3786
2306#if EV_MINIMAL < 2 3787#if EV_FEATURE_API
2307 --loop_depth; 3788 --loop_depth;
2308#endif 3789#endif
2309}
2310 3790
3791 return activecnt;
3792}
3793
2311void 3794void
2312ev_unloop (EV_P_ int how) 3795ev_break (EV_P_ int how) EV_NOEXCEPT
2313{ 3796{
2314 loop_done = how; 3797 loop_done = how;
2315} 3798}
2316 3799
2317void 3800void
2318ev_ref (EV_P) 3801ev_ref (EV_P) EV_NOEXCEPT
2319{ 3802{
2320 ++activecnt; 3803 ++activecnt;
2321} 3804}
2322 3805
2323void 3806void
2324ev_unref (EV_P) 3807ev_unref (EV_P) EV_NOEXCEPT
2325{ 3808{
2326 --activecnt; 3809 --activecnt;
2327} 3810}
2328 3811
2329void 3812void
2330ev_now_update (EV_P) 3813ev_now_update (EV_P) EV_NOEXCEPT
2331{ 3814{
2332 time_update (EV_A_ 1e100); 3815 time_update (EV_A_ 1e100);
2333} 3816}
2334 3817
2335void 3818void
2336ev_suspend (EV_P) 3819ev_suspend (EV_P) EV_NOEXCEPT
2337{ 3820{
2338 ev_now_update (EV_A); 3821 ev_now_update (EV_A);
2339} 3822}
2340 3823
2341void 3824void
2342ev_resume (EV_P) 3825ev_resume (EV_P) EV_NOEXCEPT
2343{ 3826{
2344 ev_tstamp mn_prev = mn_now; 3827 ev_tstamp mn_prev = mn_now;
2345 3828
2346 ev_now_update (EV_A); 3829 ev_now_update (EV_A);
2347 timers_reschedule (EV_A_ mn_now - mn_prev); 3830 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2364inline_size void 3847inline_size void
2365wlist_del (WL *head, WL elem) 3848wlist_del (WL *head, WL elem)
2366{ 3849{
2367 while (*head) 3850 while (*head)
2368 { 3851 {
2369 if (*head == elem) 3852 if (expect_true (*head == elem))
2370 { 3853 {
2371 *head = elem->next; 3854 *head = elem->next;
2372 return; 3855 break;
2373 } 3856 }
2374 3857
2375 head = &(*head)->next; 3858 head = &(*head)->next;
2376 } 3859 }
2377} 3860}
… …
2386 w->pending = 0; 3869 w->pending = 0;
2387 } 3870 }
2388} 3871}
2389 3872
2390int 3873int
2391ev_clear_pending (EV_P_ void *w) 3874ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
2392{ 3875{
2393 W w_ = (W)w; 3876 W w_ = (W)w;
2394 int pending = w_->pending; 3877 int pending = w_->pending;
2395 3878
2396 if (expect_true (pending)) 3879 if (expect_true (pending))
… …
2428 w->active = 0; 3911 w->active = 0;
2429} 3912}
2430 3913
2431/*****************************************************************************/ 3914/*****************************************************************************/
2432 3915
2433void noinline 3916noinline
3917void
2434ev_io_start (EV_P_ ev_io *w) 3918ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
2435{ 3919{
2436 int fd = w->fd; 3920 int fd = w->fd;
2437 3921
2438 if (expect_false (ev_is_active (w))) 3922 if (expect_false (ev_is_active (w)))
2439 return; 3923 return;
2440 3924
2441 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 3925 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2442 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 3926 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2443 3927
3928#if EV_VERIFY >= 2
3929 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
3930#endif
2444 EV_FREQUENT_CHECK; 3931 EV_FREQUENT_CHECK;
2445 3932
2446 ev_start (EV_A_ (W)w, 1); 3933 ev_start (EV_A_ (W)w, 1);
2447 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3934 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
2448 wlist_add (&anfds[fd].head, (WL)w); 3935 wlist_add (&anfds[fd].head, (WL)w);
3936
3937 /* common bug, apparently */
3938 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
2449 3939
2450 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3940 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2451 w->events &= ~EV__IOFDSET; 3941 w->events &= ~EV__IOFDSET;
2452 3942
2453 EV_FREQUENT_CHECK; 3943 EV_FREQUENT_CHECK;
2454} 3944}
2455 3945
2456void noinline 3946noinline
3947void
2457ev_io_stop (EV_P_ ev_io *w) 3948ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
2458{ 3949{
2459 clear_pending (EV_A_ (W)w); 3950 clear_pending (EV_A_ (W)w);
2460 if (expect_false (!ev_is_active (w))) 3951 if (expect_false (!ev_is_active (w)))
2461 return; 3952 return;
2462 3953
2463 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 3954 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2464 3955
3956#if EV_VERIFY >= 2
3957 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
3958#endif
2465 EV_FREQUENT_CHECK; 3959 EV_FREQUENT_CHECK;
2466 3960
2467 wlist_del (&anfds[w->fd].head, (WL)w); 3961 wlist_del (&anfds[w->fd].head, (WL)w);
2468 ev_stop (EV_A_ (W)w); 3962 ev_stop (EV_A_ (W)w);
2469 3963
2470 fd_change (EV_A_ w->fd, 1); 3964 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2471 3965
2472 EV_FREQUENT_CHECK; 3966 EV_FREQUENT_CHECK;
2473} 3967}
2474 3968
2475void noinline 3969noinline
3970void
2476ev_timer_start (EV_P_ ev_timer *w) 3971ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
2477{ 3972{
2478 if (expect_false (ev_is_active (w))) 3973 if (expect_false (ev_is_active (w)))
2479 return; 3974 return;
2480 3975
2481 ev_at (w) += mn_now; 3976 ev_at (w) += mn_now;
… …
2484 3979
2485 EV_FREQUENT_CHECK; 3980 EV_FREQUENT_CHECK;
2486 3981
2487 ++timercnt; 3982 ++timercnt;
2488 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 3983 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
2489 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 3984 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
2490 ANHE_w (timers [ev_active (w)]) = (WT)w; 3985 ANHE_w (timers [ev_active (w)]) = (WT)w;
2491 ANHE_at_cache (timers [ev_active (w)]); 3986 ANHE_at_cache (timers [ev_active (w)]);
2492 upheap (timers, ev_active (w)); 3987 upheap (timers, ev_active (w));
2493 3988
2494 EV_FREQUENT_CHECK; 3989 EV_FREQUENT_CHECK;
2495 3990
2496 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3991 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2497} 3992}
2498 3993
2499void noinline 3994noinline
3995void
2500ev_timer_stop (EV_P_ ev_timer *w) 3996ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
2501{ 3997{
2502 clear_pending (EV_A_ (W)w); 3998 clear_pending (EV_A_ (W)w);
2503 if (expect_false (!ev_is_active (w))) 3999 if (expect_false (!ev_is_active (w)))
2504 return; 4000 return;
2505 4001
… …
2517 timers [active] = timers [timercnt + HEAP0]; 4013 timers [active] = timers [timercnt + HEAP0];
2518 adjustheap (timers, timercnt, active); 4014 adjustheap (timers, timercnt, active);
2519 } 4015 }
2520 } 4016 }
2521 4017
2522 EV_FREQUENT_CHECK;
2523
2524 ev_at (w) -= mn_now; 4018 ev_at (w) -= mn_now;
2525 4019
2526 ev_stop (EV_A_ (W)w); 4020 ev_stop (EV_A_ (W)w);
2527}
2528 4021
4022 EV_FREQUENT_CHECK;
4023}
4024
2529void noinline 4025noinline
4026void
2530ev_timer_again (EV_P_ ev_timer *w) 4027ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
2531{ 4028{
2532 EV_FREQUENT_CHECK; 4029 EV_FREQUENT_CHECK;
4030
4031 clear_pending (EV_A_ (W)w);
2533 4032
2534 if (ev_is_active (w)) 4033 if (ev_is_active (w))
2535 { 4034 {
2536 if (w->repeat) 4035 if (w->repeat)
2537 { 4036 {
… …
2550 4049
2551 EV_FREQUENT_CHECK; 4050 EV_FREQUENT_CHECK;
2552} 4051}
2553 4052
2554ev_tstamp 4053ev_tstamp
2555ev_timer_remaining (EV_P_ ev_timer *w) 4054ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
2556{ 4055{
2557 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4056 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2558} 4057}
2559 4058
2560#if EV_PERIODIC_ENABLE 4059#if EV_PERIODIC_ENABLE
2561void noinline 4060noinline
4061void
2562ev_periodic_start (EV_P_ ev_periodic *w) 4062ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
2563{ 4063{
2564 if (expect_false (ev_is_active (w))) 4064 if (expect_false (ev_is_active (w)))
2565 return; 4065 return;
2566 4066
2567 if (w->reschedule_cb) 4067 if (w->reschedule_cb)
2568 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4068 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2569 else if (w->interval) 4069 else if (w->interval)
2570 { 4070 {
2571 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 4071 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2572 /* this formula differs from the one in periodic_reify because we do not always round up */ 4072 periodic_recalc (EV_A_ w);
2573 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2574 } 4073 }
2575 else 4074 else
2576 ev_at (w) = w->offset; 4075 ev_at (w) = w->offset;
2577 4076
2578 EV_FREQUENT_CHECK; 4077 EV_FREQUENT_CHECK;
2579 4078
2580 ++periodiccnt; 4079 ++periodiccnt;
2581 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4080 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2582 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4081 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
2583 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4082 ANHE_w (periodics [ev_active (w)]) = (WT)w;
2584 ANHE_at_cache (periodics [ev_active (w)]); 4083 ANHE_at_cache (periodics [ev_active (w)]);
2585 upheap (periodics, ev_active (w)); 4084 upheap (periodics, ev_active (w));
2586 4085
2587 EV_FREQUENT_CHECK; 4086 EV_FREQUENT_CHECK;
2588 4087
2589 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4088 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2590} 4089}
2591 4090
2592void noinline 4091noinline
4092void
2593ev_periodic_stop (EV_P_ ev_periodic *w) 4093ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
2594{ 4094{
2595 clear_pending (EV_A_ (W)w); 4095 clear_pending (EV_A_ (W)w);
2596 if (expect_false (!ev_is_active (w))) 4096 if (expect_false (!ev_is_active (w)))
2597 return; 4097 return;
2598 4098
… …
2610 periodics [active] = periodics [periodiccnt + HEAP0]; 4110 periodics [active] = periodics [periodiccnt + HEAP0];
2611 adjustheap (periodics, periodiccnt, active); 4111 adjustheap (periodics, periodiccnt, active);
2612 } 4112 }
2613 } 4113 }
2614 4114
2615 EV_FREQUENT_CHECK;
2616
2617 ev_stop (EV_A_ (W)w); 4115 ev_stop (EV_A_ (W)w);
2618}
2619 4116
4117 EV_FREQUENT_CHECK;
4118}
4119
2620void noinline 4120noinline
4121void
2621ev_periodic_again (EV_P_ ev_periodic *w) 4122ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
2622{ 4123{
2623 /* TODO: use adjustheap and recalculation */ 4124 /* TODO: use adjustheap and recalculation */
2624 ev_periodic_stop (EV_A_ w); 4125 ev_periodic_stop (EV_A_ w);
2625 ev_periodic_start (EV_A_ w); 4126 ev_periodic_start (EV_A_ w);
2626} 4127}
… …
2628 4129
2629#ifndef SA_RESTART 4130#ifndef SA_RESTART
2630# define SA_RESTART 0 4131# define SA_RESTART 0
2631#endif 4132#endif
2632 4133
4134#if EV_SIGNAL_ENABLE
4135
2633void noinline 4136noinline
4137void
2634ev_signal_start (EV_P_ ev_signal *w) 4138ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
2635{ 4139{
2636#if EV_MULTIPLICITY
2637 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2638#endif
2639 if (expect_false (ev_is_active (w))) 4140 if (expect_false (ev_is_active (w)))
2640 return; 4141 return;
2641 4142
2642 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0)); 4143 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
4144
4145#if EV_MULTIPLICITY
4146 assert (("libev: a signal must not be attached to two different loops",
4147 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
4148
4149 signals [w->signum - 1].loop = EV_A;
4150 ECB_MEMORY_FENCE_RELEASE;
4151#endif
2643 4152
2644 EV_FREQUENT_CHECK; 4153 EV_FREQUENT_CHECK;
2645 4154
2646#if EV_USE_SIGNALFD 4155#if EV_USE_SIGNALFD
2647 if (sigfd == -2) 4156 if (sigfd == -2)
… …
2669 sigaddset (&sigfd_set, w->signum); 4178 sigaddset (&sigfd_set, w->signum);
2670 sigprocmask (SIG_BLOCK, &sigfd_set, 0); 4179 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
2671 4180
2672 signalfd (sigfd, &sigfd_set, 0); 4181 signalfd (sigfd, &sigfd_set, 0);
2673 } 4182 }
2674 else
2675#endif 4183#endif
2676 evpipe_init (EV_A);
2677
2678 {
2679#ifndef _WIN32
2680 sigset_t full, prev;
2681 sigfillset (&full);
2682 sigprocmask (SIG_SETMASK, &full, &prev);
2683#endif
2684
2685 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);
2686
2687#ifndef _WIN32
2688 if (sigfd < 0)/*TODO*/
2689 sigdelset (&prev, w->signum);
2690 sigprocmask (SIG_SETMASK, &prev, 0);
2691#endif
2692 }
2693 4184
2694 ev_start (EV_A_ (W)w, 1); 4185 ev_start (EV_A_ (W)w, 1);
2695 wlist_add (&signals [w->signum - 1].head, (WL)w); 4186 wlist_add (&signals [w->signum - 1].head, (WL)w);
2696 4187
2697 if (!((WL)w)->next) 4188 if (!((WL)w)->next)
4189# if EV_USE_SIGNALFD
4190 if (sigfd < 0) /*TODO*/
4191# endif
2698 { 4192 {
2699#if _WIN32 4193# ifdef _WIN32
4194 evpipe_init (EV_A);
4195
2700 signal (w->signum, ev_sighandler); 4196 signal (w->signum, ev_sighandler);
2701#else 4197# else
2702 if (sigfd < 0) /*TODO*/
2703 {
2704 struct sigaction sa = { }; 4198 struct sigaction sa;
4199
4200 evpipe_init (EV_A);
4201
2705 sa.sa_handler = ev_sighandler; 4202 sa.sa_handler = ev_sighandler;
2706 sigfillset (&sa.sa_mask); 4203 sigfillset (&sa.sa_mask);
2707 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 4204 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2708 sigaction (w->signum, &sa, 0); 4205 sigaction (w->signum, &sa, 0);
4206
4207 if (origflags & EVFLAG_NOSIGMASK)
4208 {
4209 sigemptyset (&sa.sa_mask);
4210 sigaddset (&sa.sa_mask, w->signum);
4211 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2709 } 4212 }
2710#endif 4213#endif
2711 } 4214 }
2712 4215
2713 EV_FREQUENT_CHECK; 4216 EV_FREQUENT_CHECK;
2714} 4217}
2715 4218
2716void noinline 4219noinline
4220void
2717ev_signal_stop (EV_P_ ev_signal *w) 4221ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
2718{ 4222{
2719 clear_pending (EV_A_ (W)w); 4223 clear_pending (EV_A_ (W)w);
2720 if (expect_false (!ev_is_active (w))) 4224 if (expect_false (!ev_is_active (w)))
2721 return; 4225 return;
2722 4226
… …
2724 4228
2725 wlist_del (&signals [w->signum - 1].head, (WL)w); 4229 wlist_del (&signals [w->signum - 1].head, (WL)w);
2726 ev_stop (EV_A_ (W)w); 4230 ev_stop (EV_A_ (W)w);
2727 4231
2728 if (!signals [w->signum - 1].head) 4232 if (!signals [w->signum - 1].head)
4233 {
4234#if EV_MULTIPLICITY
4235 signals [w->signum - 1].loop = 0; /* unattach from signal */
4236#endif
2729#if EV_USE_SIGNALFD 4237#if EV_USE_SIGNALFD
2730 if (sigfd >= 0) 4238 if (sigfd >= 0)
2731 { 4239 {
2732 sigprocmask (SIG_UNBLOCK, &sigfd_set, 0);//D 4240 sigset_t ss;
4241
4242 sigemptyset (&ss);
4243 sigaddset (&ss, w->signum);
2733 sigdelset (&sigfd_set, w->signum); 4244 sigdelset (&sigfd_set, w->signum);
4245
2734 signalfd (sigfd, &sigfd_set, 0); 4246 signalfd (sigfd, &sigfd_set, 0);
2735 sigprocmask (SIG_BLOCK, &sigfd_set, 0);//D 4247 sigprocmask (SIG_UNBLOCK, &ss, 0);
2736 /*TODO: maybe unblock signal? */
2737 } 4248 }
2738 else 4249 else
2739#endif 4250#endif
2740 signal (w->signum, SIG_DFL); 4251 signal (w->signum, SIG_DFL);
4252 }
2741 4253
2742 EV_FREQUENT_CHECK; 4254 EV_FREQUENT_CHECK;
2743} 4255}
2744 4256
4257#endif
4258
4259#if EV_CHILD_ENABLE
4260
2745void 4261void
2746ev_child_start (EV_P_ ev_child *w) 4262ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
2747{ 4263{
2748#if EV_MULTIPLICITY 4264#if EV_MULTIPLICITY
2749 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4265 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2750#endif 4266#endif
2751 if (expect_false (ev_is_active (w))) 4267 if (expect_false (ev_is_active (w)))
2752 return; 4268 return;
2753 4269
2754 EV_FREQUENT_CHECK; 4270 EV_FREQUENT_CHECK;
2755 4271
2756 ev_start (EV_A_ (W)w, 1); 4272 ev_start (EV_A_ (W)w, 1);
2757 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4273 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2758 4274
2759 EV_FREQUENT_CHECK; 4275 EV_FREQUENT_CHECK;
2760} 4276}
2761 4277
2762void 4278void
2763ev_child_stop (EV_P_ ev_child *w) 4279ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
2764{ 4280{
2765 clear_pending (EV_A_ (W)w); 4281 clear_pending (EV_A_ (W)w);
2766 if (expect_false (!ev_is_active (w))) 4282 if (expect_false (!ev_is_active (w)))
2767 return; 4283 return;
2768 4284
2769 EV_FREQUENT_CHECK; 4285 EV_FREQUENT_CHECK;
2770 4286
2771 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4287 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2772 ev_stop (EV_A_ (W)w); 4288 ev_stop (EV_A_ (W)w);
2773 4289
2774 EV_FREQUENT_CHECK; 4290 EV_FREQUENT_CHECK;
2775} 4291}
4292
4293#endif
2776 4294
2777#if EV_STAT_ENABLE 4295#if EV_STAT_ENABLE
2778 4296
2779# ifdef _WIN32 4297# ifdef _WIN32
2780# undef lstat 4298# undef lstat
… …
2783 4301
2784#define DEF_STAT_INTERVAL 5.0074891 4302#define DEF_STAT_INTERVAL 5.0074891
2785#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4303#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2786#define MIN_STAT_INTERVAL 0.1074891 4304#define MIN_STAT_INTERVAL 0.1074891
2787 4305
2788static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4306noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2789 4307
2790#if EV_USE_INOTIFY 4308#if EV_USE_INOTIFY
2791# define EV_INOTIFY_BUFSIZE 8192
2792 4309
2793static void noinline 4310/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
4311# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
4312
4313noinline
4314static void
2794infy_add (EV_P_ ev_stat *w) 4315infy_add (EV_P_ ev_stat *w)
2795{ 4316{
2796 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); 4317 w->wd = inotify_add_watch (fs_fd, w->path,
4318 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4319 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4320 | IN_DONT_FOLLOW | IN_MASK_ADD);
2797 4321
2798 if (w->wd < 0) 4322 if (w->wd >= 0)
4323 {
4324 struct statfs sfs;
4325
4326 /* now local changes will be tracked by inotify, but remote changes won't */
4327 /* unless the filesystem is known to be local, we therefore still poll */
4328 /* also do poll on <2.6.25, but with normal frequency */
4329
4330 if (!fs_2625)
4331 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
4332 else if (!statfs (w->path, &sfs)
4333 && (sfs.f_type == 0x1373 /* devfs */
4334 || sfs.f_type == 0x4006 /* fat */
4335 || sfs.f_type == 0x4d44 /* msdos */
4336 || sfs.f_type == 0xEF53 /* ext2/3 */
4337 || sfs.f_type == 0x72b6 /* jffs2 */
4338 || sfs.f_type == 0x858458f6 /* ramfs */
4339 || sfs.f_type == 0x5346544e /* ntfs */
4340 || sfs.f_type == 0x3153464a /* jfs */
4341 || sfs.f_type == 0x9123683e /* btrfs */
4342 || sfs.f_type == 0x52654973 /* reiser3 */
4343 || sfs.f_type == 0x01021994 /* tmpfs */
4344 || sfs.f_type == 0x58465342 /* xfs */))
4345 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
4346 else
4347 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2799 { 4348 }
4349 else
4350 {
4351 /* can't use inotify, continue to stat */
2800 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4352 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2801 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2802 4353
2803 /* monitor some parent directory for speedup hints */ 4354 /* if path is not there, monitor some parent directory for speedup hints */
2804 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 4355 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2805 /* but an efficiency issue only */ 4356 /* but an efficiency issue only */
2806 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 4357 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2807 { 4358 {
2808 char path [4096]; 4359 char path [4096];
… …
2818 if (!pend || pend == path) 4369 if (!pend || pend == path)
2819 break; 4370 break;
2820 4371
2821 *pend = 0; 4372 *pend = 0;
2822 w->wd = inotify_add_watch (fs_fd, path, mask); 4373 w->wd = inotify_add_watch (fs_fd, path, mask);
2823 } 4374 }
2824 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 4375 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2825 } 4376 }
2826 } 4377 }
2827 4378
2828 if (w->wd >= 0) 4379 if (w->wd >= 0)
2829 {
2830 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4380 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2831 4381
2832 /* now local changes will be tracked by inotify, but remote changes won't */ 4382 /* now re-arm timer, if required */
2833 /* unless the filesystem it known to be local, we therefore still poll */ 4383 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2834 /* also do poll on <2.6.25, but with normal frequency */
2835 struct statfs sfs;
2836
2837 if (fs_2625 && !statfs (w->path, &sfs))
2838 if (sfs.f_type == 0x1373 /* devfs */
2839 || sfs.f_type == 0xEF53 /* ext2/3 */
2840 || sfs.f_type == 0x3153464a /* jfs */
2841 || sfs.f_type == 0x52654973 /* reiser3 */
2842 || sfs.f_type == 0x01021994 /* tempfs */
2843 || sfs.f_type == 0x58465342 /* xfs */)
2844 return;
2845
2846 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2847 ev_timer_again (EV_A_ &w->timer); 4384 ev_timer_again (EV_A_ &w->timer);
2848 } 4385 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2849} 4386}
2850 4387
2851static void noinline 4388noinline
4389static void
2852infy_del (EV_P_ ev_stat *w) 4390infy_del (EV_P_ ev_stat *w)
2853{ 4391{
2854 int slot; 4392 int slot;
2855 int wd = w->wd; 4393 int wd = w->wd;
2856 4394
2857 if (wd < 0) 4395 if (wd < 0)
2858 return; 4396 return;
2859 4397
2860 w->wd = -2; 4398 w->wd = -2;
2861 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 4399 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2862 wlist_del (&fs_hash [slot].head, (WL)w); 4400 wlist_del (&fs_hash [slot].head, (WL)w);
2863 4401
2864 /* remove this watcher, if others are watching it, they will rearm */ 4402 /* remove this watcher, if others are watching it, they will rearm */
2865 inotify_rm_watch (fs_fd, wd); 4403 inotify_rm_watch (fs_fd, wd);
2866} 4404}
2867 4405
2868static void noinline 4406noinline
4407static void
2869infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4408infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2870{ 4409{
2871 if (slot < 0) 4410 if (slot < 0)
2872 /* overflow, need to check for all hash slots */ 4411 /* overflow, need to check for all hash slots */
2873 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4412 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2874 infy_wd (EV_A_ slot, wd, ev); 4413 infy_wd (EV_A_ slot, wd, ev);
2875 else 4414 else
2876 { 4415 {
2877 WL w_; 4416 WL w_;
2878 4417
2879 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 4418 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2880 { 4419 {
2881 ev_stat *w = (ev_stat *)w_; 4420 ev_stat *w = (ev_stat *)w_;
2882 w_ = w_->next; /* lets us remove this watcher and all before it */ 4421 w_ = w_->next; /* lets us remove this watcher and all before it */
2883 4422
2884 if (w->wd == wd || wd == -1) 4423 if (w->wd == wd || wd == -1)
2885 { 4424 {
2886 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 4425 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2887 { 4426 {
2888 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4427 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2889 w->wd = -1; 4428 w->wd = -1;
2890 infy_add (EV_A_ w); /* re-add, no matter what */ 4429 infy_add (EV_A_ w); /* re-add, no matter what */
2891 } 4430 }
2892 4431
2893 stat_timer_cb (EV_A_ &w->timer, 0); 4432 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2898 4437
2899static void 4438static void
2900infy_cb (EV_P_ ev_io *w, int revents) 4439infy_cb (EV_P_ ev_io *w, int revents)
2901{ 4440{
2902 char buf [EV_INOTIFY_BUFSIZE]; 4441 char buf [EV_INOTIFY_BUFSIZE];
2903 struct inotify_event *ev = (struct inotify_event *)buf;
2904 int ofs; 4442 int ofs;
2905 int len = read (fs_fd, buf, sizeof (buf)); 4443 int len = read (fs_fd, buf, sizeof (buf));
2906 4444
2907 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 4445 for (ofs = 0; ofs < len; )
4446 {
4447 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2908 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4448 infy_wd (EV_A_ ev->wd, ev->wd, ev);
4449 ofs += sizeof (struct inotify_event) + ev->len;
4450 }
2909} 4451}
2910 4452
2911inline_size void 4453inline_size ecb_cold
4454void
2912check_2625 (EV_P) 4455ev_check_2625 (EV_P)
2913{ 4456{
2914 /* kernels < 2.6.25 are borked 4457 /* kernels < 2.6.25 are borked
2915 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4458 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2916 */ 4459 */
2917 struct utsname buf; 4460 if (ev_linux_version () < 0x020619)
2918 int major, minor, micro;
2919
2920 if (uname (&buf))
2921 return; 4461 return;
2922 4462
2923 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2924 return;
2925
2926 if (major < 2
2927 || (major == 2 && minor < 6)
2928 || (major == 2 && minor == 6 && micro < 25))
2929 return;
2930
2931 fs_2625 = 1; 4463 fs_2625 = 1;
4464}
4465
4466inline_size int
4467infy_newfd (void)
4468{
4469#if defined IN_CLOEXEC && defined IN_NONBLOCK
4470 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
4471 if (fd >= 0)
4472 return fd;
4473#endif
4474 return inotify_init ();
2932} 4475}
2933 4476
2934inline_size void 4477inline_size void
2935infy_init (EV_P) 4478infy_init (EV_P)
2936{ 4479{
2937 if (fs_fd != -2) 4480 if (fs_fd != -2)
2938 return; 4481 return;
2939 4482
2940 fs_fd = -1; 4483 fs_fd = -1;
2941 4484
2942 check_2625 (EV_A); 4485 ev_check_2625 (EV_A);
2943 4486
2944 fs_fd = inotify_init (); 4487 fs_fd = infy_newfd ();
2945 4488
2946 if (fs_fd >= 0) 4489 if (fs_fd >= 0)
2947 { 4490 {
4491 fd_intern (fs_fd);
2948 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 4492 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2949 ev_set_priority (&fs_w, EV_MAXPRI); 4493 ev_set_priority (&fs_w, EV_MAXPRI);
2950 ev_io_start (EV_A_ &fs_w); 4494 ev_io_start (EV_A_ &fs_w);
4495 ev_unref (EV_A);
2951 } 4496 }
2952} 4497}
2953 4498
2954inline_size void 4499inline_size void
2955infy_fork (EV_P) 4500infy_fork (EV_P)
… …
2957 int slot; 4502 int slot;
2958 4503
2959 if (fs_fd < 0) 4504 if (fs_fd < 0)
2960 return; 4505 return;
2961 4506
4507 ev_ref (EV_A);
4508 ev_io_stop (EV_A_ &fs_w);
2962 close (fs_fd); 4509 close (fs_fd);
2963 fs_fd = inotify_init (); 4510 fs_fd = infy_newfd ();
2964 4511
4512 if (fs_fd >= 0)
4513 {
4514 fd_intern (fs_fd);
4515 ev_io_set (&fs_w, fs_fd, EV_READ);
4516 ev_io_start (EV_A_ &fs_w);
4517 ev_unref (EV_A);
4518 }
4519
2965 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4520 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2966 { 4521 {
2967 WL w_ = fs_hash [slot].head; 4522 WL w_ = fs_hash [slot].head;
2968 fs_hash [slot].head = 0; 4523 fs_hash [slot].head = 0;
2969 4524
2970 while (w_) 4525 while (w_)
… …
2975 w->wd = -1; 4530 w->wd = -1;
2976 4531
2977 if (fs_fd >= 0) 4532 if (fs_fd >= 0)
2978 infy_add (EV_A_ w); /* re-add, no matter what */ 4533 infy_add (EV_A_ w); /* re-add, no matter what */
2979 else 4534 else
4535 {
4536 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
4537 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2980 ev_timer_again (EV_A_ &w->timer); 4538 ev_timer_again (EV_A_ &w->timer);
4539 if (ev_is_active (&w->timer)) ev_unref (EV_A);
4540 }
2981 } 4541 }
2982 } 4542 }
2983} 4543}
2984 4544
2985#endif 4545#endif
… …
2989#else 4549#else
2990# define EV_LSTAT(p,b) lstat (p, b) 4550# define EV_LSTAT(p,b) lstat (p, b)
2991#endif 4551#endif
2992 4552
2993void 4553void
2994ev_stat_stat (EV_P_ ev_stat *w) 4554ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
2995{ 4555{
2996 if (lstat (w->path, &w->attr) < 0) 4556 if (lstat (w->path, &w->attr) < 0)
2997 w->attr.st_nlink = 0; 4557 w->attr.st_nlink = 0;
2998 else if (!w->attr.st_nlink) 4558 else if (!w->attr.st_nlink)
2999 w->attr.st_nlink = 1; 4559 w->attr.st_nlink = 1;
3000} 4560}
3001 4561
3002static void noinline 4562noinline
4563static void
3003stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4564stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3004{ 4565{
3005 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4566 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3006 4567
3007 /* we copy this here each the time so that */ 4568 ev_statdata prev = w->attr;
3008 /* prev has the old value when the callback gets invoked */
3009 w->prev = w->attr;
3010 ev_stat_stat (EV_A_ w); 4569 ev_stat_stat (EV_A_ w);
3011 4570
3012 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 4571 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
3013 if ( 4572 if (
3014 w->prev.st_dev != w->attr.st_dev 4573 prev.st_dev != w->attr.st_dev
3015 || w->prev.st_ino != w->attr.st_ino 4574 || prev.st_ino != w->attr.st_ino
3016 || w->prev.st_mode != w->attr.st_mode 4575 || prev.st_mode != w->attr.st_mode
3017 || w->prev.st_nlink != w->attr.st_nlink 4576 || prev.st_nlink != w->attr.st_nlink
3018 || w->prev.st_uid != w->attr.st_uid 4577 || prev.st_uid != w->attr.st_uid
3019 || w->prev.st_gid != w->attr.st_gid 4578 || prev.st_gid != w->attr.st_gid
3020 || w->prev.st_rdev != w->attr.st_rdev 4579 || prev.st_rdev != w->attr.st_rdev
3021 || w->prev.st_size != w->attr.st_size 4580 || prev.st_size != w->attr.st_size
3022 || w->prev.st_atime != w->attr.st_atime 4581 || prev.st_atime != w->attr.st_atime
3023 || w->prev.st_mtime != w->attr.st_mtime 4582 || prev.st_mtime != w->attr.st_mtime
3024 || w->prev.st_ctime != w->attr.st_ctime 4583 || prev.st_ctime != w->attr.st_ctime
3025 ) { 4584 ) {
4585 /* we only update w->prev on actual differences */
4586 /* in case we test more often than invoke the callback, */
4587 /* to ensure that prev is always different to attr */
4588 w->prev = prev;
4589
3026 #if EV_USE_INOTIFY 4590 #if EV_USE_INOTIFY
3027 if (fs_fd >= 0) 4591 if (fs_fd >= 0)
3028 { 4592 {
3029 infy_del (EV_A_ w); 4593 infy_del (EV_A_ w);
3030 infy_add (EV_A_ w); 4594 infy_add (EV_A_ w);
… …
3035 ev_feed_event (EV_A_ w, EV_STAT); 4599 ev_feed_event (EV_A_ w, EV_STAT);
3036 } 4600 }
3037} 4601}
3038 4602
3039void 4603void
3040ev_stat_start (EV_P_ ev_stat *w) 4604ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
3041{ 4605{
3042 if (expect_false (ev_is_active (w))) 4606 if (expect_false (ev_is_active (w)))
3043 return; 4607 return;
3044 4608
3045 ev_stat_stat (EV_A_ w); 4609 ev_stat_stat (EV_A_ w);
… …
3055 4619
3056 if (fs_fd >= 0) 4620 if (fs_fd >= 0)
3057 infy_add (EV_A_ w); 4621 infy_add (EV_A_ w);
3058 else 4622 else
3059#endif 4623#endif
4624 {
3060 ev_timer_again (EV_A_ &w->timer); 4625 ev_timer_again (EV_A_ &w->timer);
4626 ev_unref (EV_A);
4627 }
3061 4628
3062 ev_start (EV_A_ (W)w, 1); 4629 ev_start (EV_A_ (W)w, 1);
3063 4630
3064 EV_FREQUENT_CHECK; 4631 EV_FREQUENT_CHECK;
3065} 4632}
3066 4633
3067void 4634void
3068ev_stat_stop (EV_P_ ev_stat *w) 4635ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
3069{ 4636{
3070 clear_pending (EV_A_ (W)w); 4637 clear_pending (EV_A_ (W)w);
3071 if (expect_false (!ev_is_active (w))) 4638 if (expect_false (!ev_is_active (w)))
3072 return; 4639 return;
3073 4640
3074 EV_FREQUENT_CHECK; 4641 EV_FREQUENT_CHECK;
3075 4642
3076#if EV_USE_INOTIFY 4643#if EV_USE_INOTIFY
3077 infy_del (EV_A_ w); 4644 infy_del (EV_A_ w);
3078#endif 4645#endif
4646
4647 if (ev_is_active (&w->timer))
4648 {
4649 ev_ref (EV_A);
3079 ev_timer_stop (EV_A_ &w->timer); 4650 ev_timer_stop (EV_A_ &w->timer);
4651 }
3080 4652
3081 ev_stop (EV_A_ (W)w); 4653 ev_stop (EV_A_ (W)w);
3082 4654
3083 EV_FREQUENT_CHECK; 4655 EV_FREQUENT_CHECK;
3084} 4656}
3085#endif 4657#endif
3086 4658
3087#if EV_IDLE_ENABLE 4659#if EV_IDLE_ENABLE
3088void 4660void
3089ev_idle_start (EV_P_ ev_idle *w) 4661ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
3090{ 4662{
3091 if (expect_false (ev_is_active (w))) 4663 if (expect_false (ev_is_active (w)))
3092 return; 4664 return;
3093 4665
3094 pri_adjust (EV_A_ (W)w); 4666 pri_adjust (EV_A_ (W)w);
… …
3099 int active = ++idlecnt [ABSPRI (w)]; 4671 int active = ++idlecnt [ABSPRI (w)];
3100 4672
3101 ++idleall; 4673 ++idleall;
3102 ev_start (EV_A_ (W)w, active); 4674 ev_start (EV_A_ (W)w, active);
3103 4675
3104 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 4676 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
3105 idles [ABSPRI (w)][active - 1] = w; 4677 idles [ABSPRI (w)][active - 1] = w;
3106 } 4678 }
3107 4679
3108 EV_FREQUENT_CHECK; 4680 EV_FREQUENT_CHECK;
3109} 4681}
3110 4682
3111void 4683void
3112ev_idle_stop (EV_P_ ev_idle *w) 4684ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
3113{ 4685{
3114 clear_pending (EV_A_ (W)w); 4686 clear_pending (EV_A_ (W)w);
3115 if (expect_false (!ev_is_active (w))) 4687 if (expect_false (!ev_is_active (w)))
3116 return; 4688 return;
3117 4689
… …
3129 4701
3130 EV_FREQUENT_CHECK; 4702 EV_FREQUENT_CHECK;
3131} 4703}
3132#endif 4704#endif
3133 4705
4706#if EV_PREPARE_ENABLE
3134void 4707void
3135ev_prepare_start (EV_P_ ev_prepare *w) 4708ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
3136{ 4709{
3137 if (expect_false (ev_is_active (w))) 4710 if (expect_false (ev_is_active (w)))
3138 return; 4711 return;
3139 4712
3140 EV_FREQUENT_CHECK; 4713 EV_FREQUENT_CHECK;
3141 4714
3142 ev_start (EV_A_ (W)w, ++preparecnt); 4715 ev_start (EV_A_ (W)w, ++preparecnt);
3143 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4716 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
3144 prepares [preparecnt - 1] = w; 4717 prepares [preparecnt - 1] = w;
3145 4718
3146 EV_FREQUENT_CHECK; 4719 EV_FREQUENT_CHECK;
3147} 4720}
3148 4721
3149void 4722void
3150ev_prepare_stop (EV_P_ ev_prepare *w) 4723ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
3151{ 4724{
3152 clear_pending (EV_A_ (W)w); 4725 clear_pending (EV_A_ (W)w);
3153 if (expect_false (!ev_is_active (w))) 4726 if (expect_false (!ev_is_active (w)))
3154 return; 4727 return;
3155 4728
… …
3164 4737
3165 ev_stop (EV_A_ (W)w); 4738 ev_stop (EV_A_ (W)w);
3166 4739
3167 EV_FREQUENT_CHECK; 4740 EV_FREQUENT_CHECK;
3168} 4741}
4742#endif
3169 4743
4744#if EV_CHECK_ENABLE
3170void 4745void
3171ev_check_start (EV_P_ ev_check *w) 4746ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
3172{ 4747{
3173 if (expect_false (ev_is_active (w))) 4748 if (expect_false (ev_is_active (w)))
3174 return; 4749 return;
3175 4750
3176 EV_FREQUENT_CHECK; 4751 EV_FREQUENT_CHECK;
3177 4752
3178 ev_start (EV_A_ (W)w, ++checkcnt); 4753 ev_start (EV_A_ (W)w, ++checkcnt);
3179 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 4754 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
3180 checks [checkcnt - 1] = w; 4755 checks [checkcnt - 1] = w;
3181 4756
3182 EV_FREQUENT_CHECK; 4757 EV_FREQUENT_CHECK;
3183} 4758}
3184 4759
3185void 4760void
3186ev_check_stop (EV_P_ ev_check *w) 4761ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
3187{ 4762{
3188 clear_pending (EV_A_ (W)w); 4763 clear_pending (EV_A_ (W)w);
3189 if (expect_false (!ev_is_active (w))) 4764 if (expect_false (!ev_is_active (w)))
3190 return; 4765 return;
3191 4766
… …
3200 4775
3201 ev_stop (EV_A_ (W)w); 4776 ev_stop (EV_A_ (W)w);
3202 4777
3203 EV_FREQUENT_CHECK; 4778 EV_FREQUENT_CHECK;
3204} 4779}
4780#endif
3205 4781
3206#if EV_EMBED_ENABLE 4782#if EV_EMBED_ENABLE
3207void noinline 4783noinline
4784void
3208ev_embed_sweep (EV_P_ ev_embed *w) 4785ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
3209{ 4786{
3210 ev_loop (w->other, EVLOOP_NONBLOCK); 4787 ev_run (w->other, EVRUN_NOWAIT);
3211} 4788}
3212 4789
3213static void 4790static void
3214embed_io_cb (EV_P_ ev_io *io, int revents) 4791embed_io_cb (EV_P_ ev_io *io, int revents)
3215{ 4792{
3216 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4793 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3217 4794
3218 if (ev_cb (w)) 4795 if (ev_cb (w))
3219 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4796 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3220 else 4797 else
3221 ev_loop (w->other, EVLOOP_NONBLOCK); 4798 ev_run (w->other, EVRUN_NOWAIT);
3222} 4799}
3223 4800
3224static void 4801static void
3225embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4802embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3226{ 4803{
3227 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 4804 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
3228 4805
3229 { 4806 {
3230 struct ev_loop *loop = w->other; 4807 EV_P = w->other;
3231 4808
3232 while (fdchangecnt) 4809 while (fdchangecnt)
3233 { 4810 {
3234 fd_reify (EV_A); 4811 fd_reify (EV_A);
3235 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4812 ev_run (EV_A_ EVRUN_NOWAIT);
3236 } 4813 }
3237 } 4814 }
3238} 4815}
3239 4816
3240static void 4817static void
… …
3243 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 4820 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3244 4821
3245 ev_embed_stop (EV_A_ w); 4822 ev_embed_stop (EV_A_ w);
3246 4823
3247 { 4824 {
3248 struct ev_loop *loop = w->other; 4825 EV_P = w->other;
3249 4826
3250 ev_loop_fork (EV_A); 4827 ev_loop_fork (EV_A);
3251 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4828 ev_run (EV_A_ EVRUN_NOWAIT);
3252 } 4829 }
3253 4830
3254 ev_embed_start (EV_A_ w); 4831 ev_embed_start (EV_A_ w);
3255} 4832}
3256 4833
… …
3261 ev_idle_stop (EV_A_ idle); 4838 ev_idle_stop (EV_A_ idle);
3262} 4839}
3263#endif 4840#endif
3264 4841
3265void 4842void
3266ev_embed_start (EV_P_ ev_embed *w) 4843ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
3267{ 4844{
3268 if (expect_false (ev_is_active (w))) 4845 if (expect_false (ev_is_active (w)))
3269 return; 4846 return;
3270 4847
3271 { 4848 {
3272 struct ev_loop *loop = w->other; 4849 EV_P = w->other;
3273 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4850 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
3274 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 4851 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3275 } 4852 }
3276 4853
3277 EV_FREQUENT_CHECK; 4854 EV_FREQUENT_CHECK;
… …
3292 4869
3293 EV_FREQUENT_CHECK; 4870 EV_FREQUENT_CHECK;
3294} 4871}
3295 4872
3296void 4873void
3297ev_embed_stop (EV_P_ ev_embed *w) 4874ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
3298{ 4875{
3299 clear_pending (EV_A_ (W)w); 4876 clear_pending (EV_A_ (W)w);
3300 if (expect_false (!ev_is_active (w))) 4877 if (expect_false (!ev_is_active (w)))
3301 return; 4878 return;
3302 4879
… …
3304 4881
3305 ev_io_stop (EV_A_ &w->io); 4882 ev_io_stop (EV_A_ &w->io);
3306 ev_prepare_stop (EV_A_ &w->prepare); 4883 ev_prepare_stop (EV_A_ &w->prepare);
3307 ev_fork_stop (EV_A_ &w->fork); 4884 ev_fork_stop (EV_A_ &w->fork);
3308 4885
4886 ev_stop (EV_A_ (W)w);
4887
3309 EV_FREQUENT_CHECK; 4888 EV_FREQUENT_CHECK;
3310} 4889}
3311#endif 4890#endif
3312 4891
3313#if EV_FORK_ENABLE 4892#if EV_FORK_ENABLE
3314void 4893void
3315ev_fork_start (EV_P_ ev_fork *w) 4894ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
3316{ 4895{
3317 if (expect_false (ev_is_active (w))) 4896 if (expect_false (ev_is_active (w)))
3318 return; 4897 return;
3319 4898
3320 EV_FREQUENT_CHECK; 4899 EV_FREQUENT_CHECK;
3321 4900
3322 ev_start (EV_A_ (W)w, ++forkcnt); 4901 ev_start (EV_A_ (W)w, ++forkcnt);
3323 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 4902 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
3324 forks [forkcnt - 1] = w; 4903 forks [forkcnt - 1] = w;
3325 4904
3326 EV_FREQUENT_CHECK; 4905 EV_FREQUENT_CHECK;
3327} 4906}
3328 4907
3329void 4908void
3330ev_fork_stop (EV_P_ ev_fork *w) 4909ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
3331{ 4910{
3332 clear_pending (EV_A_ (W)w); 4911 clear_pending (EV_A_ (W)w);
3333 if (expect_false (!ev_is_active (w))) 4912 if (expect_false (!ev_is_active (w)))
3334 return; 4913 return;
3335 4914
… …
3346 4925
3347 EV_FREQUENT_CHECK; 4926 EV_FREQUENT_CHECK;
3348} 4927}
3349#endif 4928#endif
3350 4929
3351#if EV_ASYNC_ENABLE 4930#if EV_CLEANUP_ENABLE
3352void 4931void
3353ev_async_start (EV_P_ ev_async *w) 4932ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
3354{ 4933{
3355 if (expect_false (ev_is_active (w))) 4934 if (expect_false (ev_is_active (w)))
3356 return; 4935 return;
3357 4936
3358 evpipe_init (EV_A);
3359
3360 EV_FREQUENT_CHECK; 4937 EV_FREQUENT_CHECK;
3361 4938
3362 ev_start (EV_A_ (W)w, ++asynccnt); 4939 ev_start (EV_A_ (W)w, ++cleanupcnt);
3363 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 4940 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
3364 asyncs [asynccnt - 1] = w; 4941 cleanups [cleanupcnt - 1] = w;
3365 4942
4943 /* cleanup watchers should never keep a refcount on the loop */
4944 ev_unref (EV_A);
3366 EV_FREQUENT_CHECK; 4945 EV_FREQUENT_CHECK;
3367} 4946}
3368 4947
3369void 4948void
3370ev_async_stop (EV_P_ ev_async *w) 4949ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
3371{ 4950{
3372 clear_pending (EV_A_ (W)w); 4951 clear_pending (EV_A_ (W)w);
3373 if (expect_false (!ev_is_active (w))) 4952 if (expect_false (!ev_is_active (w)))
3374 return; 4953 return;
3375 4954
3376 EV_FREQUENT_CHECK; 4955 EV_FREQUENT_CHECK;
4956 ev_ref (EV_A);
4957
4958 {
4959 int active = ev_active (w);
4960
4961 cleanups [active - 1] = cleanups [--cleanupcnt];
4962 ev_active (cleanups [active - 1]) = active;
4963 }
4964
4965 ev_stop (EV_A_ (W)w);
4966
4967 EV_FREQUENT_CHECK;
4968}
4969#endif
4970
4971#if EV_ASYNC_ENABLE
4972void
4973ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
4974{
4975 if (expect_false (ev_is_active (w)))
4976 return;
4977
4978 w->sent = 0;
4979
4980 evpipe_init (EV_A);
4981
4982 EV_FREQUENT_CHECK;
4983
4984 ev_start (EV_A_ (W)w, ++asynccnt);
4985 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
4986 asyncs [asynccnt - 1] = w;
4987
4988 EV_FREQUENT_CHECK;
4989}
4990
4991void
4992ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
4993{
4994 clear_pending (EV_A_ (W)w);
4995 if (expect_false (!ev_is_active (w)))
4996 return;
4997
4998 EV_FREQUENT_CHECK;
3377 4999
3378 { 5000 {
3379 int active = ev_active (w); 5001 int active = ev_active (w);
3380 5002
3381 asyncs [active - 1] = asyncs [--asynccnt]; 5003 asyncs [active - 1] = asyncs [--asynccnt];
… …
3386 5008
3387 EV_FREQUENT_CHECK; 5009 EV_FREQUENT_CHECK;
3388} 5010}
3389 5011
3390void 5012void
3391ev_async_send (EV_P_ ev_async *w) 5013ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
3392{ 5014{
3393 w->sent = 1; 5015 w->sent = 1;
3394 evpipe_write (EV_A_ &gotasync); 5016 evpipe_write (EV_A_ &async_pending);
3395} 5017}
3396#endif 5018#endif
3397 5019
3398/*****************************************************************************/ 5020/*****************************************************************************/
3399 5021
… …
3433 5055
3434 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5056 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3435} 5057}
3436 5058
3437void 5059void
3438ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 5060ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
3439{ 5061{
3440 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5062 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3441
3442 if (expect_false (!once))
3443 {
3444 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
3445 return;
3446 }
3447 5063
3448 once->cb = cb; 5064 once->cb = cb;
3449 once->arg = arg; 5065 once->arg = arg;
3450 5066
3451 ev_init (&once->io, once_cb_io); 5067 ev_init (&once->io, once_cb_io);
… …
3464} 5080}
3465 5081
3466/*****************************************************************************/ 5082/*****************************************************************************/
3467 5083
3468#if EV_WALK_ENABLE 5084#if EV_WALK_ENABLE
5085ecb_cold
3469void 5086void
3470ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 5087ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
3471{ 5088{
3472 int i, j; 5089 int i, j;
3473 ev_watcher_list *wl, *wn; 5090 ev_watcher_list *wl, *wn;
3474 5091
3475 if (types & (EV_IO | EV_EMBED)) 5092 if (types & (EV_IO | EV_EMBED))
… …
3518 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 5135 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3519#endif 5136#endif
3520 5137
3521#if EV_IDLE_ENABLE 5138#if EV_IDLE_ENABLE
3522 if (types & EV_IDLE) 5139 if (types & EV_IDLE)
3523 for (j = NUMPRI; i--; ) 5140 for (j = NUMPRI; j--; )
3524 for (i = idlecnt [j]; i--; ) 5141 for (i = idlecnt [j]; i--; )
3525 cb (EV_A_ EV_IDLE, idles [j][i]); 5142 cb (EV_A_ EV_IDLE, idles [j][i]);
3526#endif 5143#endif
3527 5144
3528#if EV_FORK_ENABLE 5145#if EV_FORK_ENABLE
… …
3536 if (types & EV_ASYNC) 5153 if (types & EV_ASYNC)
3537 for (i = asynccnt; i--; ) 5154 for (i = asynccnt; i--; )
3538 cb (EV_A_ EV_ASYNC, asyncs [i]); 5155 cb (EV_A_ EV_ASYNC, asyncs [i]);
3539#endif 5156#endif
3540 5157
5158#if EV_PREPARE_ENABLE
3541 if (types & EV_PREPARE) 5159 if (types & EV_PREPARE)
3542 for (i = preparecnt; i--; ) 5160 for (i = preparecnt; i--; )
3543#if EV_EMBED_ENABLE 5161# if EV_EMBED_ENABLE
3544 if (ev_cb (prepares [i]) != embed_prepare_cb) 5162 if (ev_cb (prepares [i]) != embed_prepare_cb)
3545#endif 5163# endif
3546 cb (EV_A_ EV_PREPARE, prepares [i]); 5164 cb (EV_A_ EV_PREPARE, prepares [i]);
5165#endif
3547 5166
5167#if EV_CHECK_ENABLE
3548 if (types & EV_CHECK) 5168 if (types & EV_CHECK)
3549 for (i = checkcnt; i--; ) 5169 for (i = checkcnt; i--; )
3550 cb (EV_A_ EV_CHECK, checks [i]); 5170 cb (EV_A_ EV_CHECK, checks [i]);
5171#endif
3551 5172
5173#if EV_SIGNAL_ENABLE
3552 if (types & EV_SIGNAL) 5174 if (types & EV_SIGNAL)
3553 for (i = 0; i < signalmax; ++i) 5175 for (i = 0; i < EV_NSIG - 1; ++i)
3554 for (wl = signals [i].head; wl; ) 5176 for (wl = signals [i].head; wl; )
3555 { 5177 {
3556 wn = wl->next; 5178 wn = wl->next;
3557 cb (EV_A_ EV_SIGNAL, wl); 5179 cb (EV_A_ EV_SIGNAL, wl);
3558 wl = wn; 5180 wl = wn;
3559 } 5181 }
5182#endif
3560 5183
5184#if EV_CHILD_ENABLE
3561 if (types & EV_CHILD) 5185 if (types & EV_CHILD)
3562 for (i = EV_PID_HASHSIZE; i--; ) 5186 for (i = (EV_PID_HASHSIZE); i--; )
3563 for (wl = childs [i]; wl; ) 5187 for (wl = childs [i]; wl; )
3564 { 5188 {
3565 wn = wl->next; 5189 wn = wl->next;
3566 cb (EV_A_ EV_CHILD, wl); 5190 cb (EV_A_ EV_CHILD, wl);
3567 wl = wn; 5191 wl = wn;
3568 } 5192 }
5193#endif
3569/* EV_STAT 0x00001000 /* stat data changed */ 5194/* EV_STAT 0x00001000 /* stat data changed */
3570/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 5195/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3571} 5196}
3572#endif 5197#endif
3573 5198
3574#if EV_MULTIPLICITY 5199#if EV_MULTIPLICITY
3575 #include "ev_wrap.h" 5200 #include "ev_wrap.h"
3576#endif 5201#endif
3577 5202
3578#ifdef __cplusplus
3579}
3580#endif
3581

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