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Comparing libev/ev.c (file contents):
Revision 1.316 by root, Fri Sep 18 21:02:12 2009 UTC vs.
Revision 1.486 by root, Thu Oct 25 03:11:04 2018 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) 2007,2008,2009,2010,2011,2012,2013 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
120# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
114# ifndef EV_USE_KQUEUE 121# ifndef EV_USE_KQUEUE
115# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 122# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
116# define EV_USE_KQUEUE 1
117# else
118# define EV_USE_KQUEUE 0
119# endif 123# endif
124# else
125# undef EV_USE_KQUEUE
126# define EV_USE_KQUEUE 0
120# endif 127# endif
121 128
122# ifndef EV_USE_PORT
123# if HAVE_PORT_H && HAVE_PORT_CREATE 129# if HAVE_PORT_H && HAVE_PORT_CREATE
124# define EV_USE_PORT 1 130# ifndef EV_USE_PORT
125# else 131# define EV_USE_PORT EV_FEATURE_BACKENDS
126# define EV_USE_PORT 0
127# endif 132# endif
133# else
134# undef EV_USE_PORT
135# define EV_USE_PORT 0
128# endif 136# endif
129 137
130# ifndef EV_USE_INOTIFY
131# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 138# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
132# define EV_USE_INOTIFY 1 139# ifndef EV_USE_INOTIFY
133# else
134# define EV_USE_INOTIFY 0 140# define EV_USE_INOTIFY EV_FEATURE_OS
135# endif 141# endif
142# else
143# undef EV_USE_INOTIFY
144# define EV_USE_INOTIFY 0
136# endif 145# endif
137 146
138# ifndef EV_USE_SIGNALFD
139# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H 147# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
140# define EV_USE_SIGNALFD 1 148# ifndef EV_USE_SIGNALFD
141# else
142# define EV_USE_SIGNALFD 0 149# define EV_USE_SIGNALFD EV_FEATURE_OS
143# endif 150# endif
151# else
152# undef EV_USE_SIGNALFD
153# define EV_USE_SIGNALFD 0
144# endif 154# endif
145 155
156# if HAVE_EVENTFD
146# ifndef EV_USE_EVENTFD 157# ifndef EV_USE_EVENTFD
147# if HAVE_EVENTFD
148# define EV_USE_EVENTFD 1 158# define EV_USE_EVENTFD EV_FEATURE_OS
149# else
150# define EV_USE_EVENTFD 0
151# endif 159# endif
160# else
161# undef EV_USE_EVENTFD
162# define EV_USE_EVENTFD 0
152# endif 163# endif
153 164
154#endif 165#endif
155 166
156#include <math.h> 167/* OS X, in its infinite idiocy, actually HARDCODES
168 * a limit of 1024 into their select. Where people have brains,
169 * OS X engineers apparently have a vacuum. Or maybe they were
170 * ordered to have a vacuum, or they do anything for money.
171 * This might help. Or not.
172 * Note that this must be defined early, as other include files
173 * will rely on this define as well.
174 */
175#define _DARWIN_UNLIMITED_SELECT 1
176
157#include <stdlib.h> 177#include <stdlib.h>
178#include <string.h>
158#include <fcntl.h> 179#include <fcntl.h>
159#include <stddef.h> 180#include <stddef.h>
160 181
161#include <stdio.h> 182#include <stdio.h>
162 183
163#include <assert.h> 184#include <assert.h>
164#include <errno.h> 185#include <errno.h>
165#include <sys/types.h> 186#include <sys/types.h>
166#include <time.h> 187#include <time.h>
188#include <limits.h>
167 189
168#include <signal.h> 190#include <signal.h>
169 191
170#ifdef EV_H 192#ifdef EV_H
171# include EV_H 193# include EV_H
172#else 194#else
173# include "ev.h" 195# include "ev.h"
196#endif
197
198#if EV_NO_THREADS
199# undef EV_NO_SMP
200# define EV_NO_SMP 1
201# undef ECB_NO_THREADS
202# define ECB_NO_THREADS 1
203#endif
204#if EV_NO_SMP
205# undef EV_NO_SMP
206# define ECB_NO_SMP 1
174#endif 207#endif
175 208
176#ifndef _WIN32 209#ifndef _WIN32
177# include <sys/time.h> 210# include <sys/time.h>
178# include <sys/wait.h> 211# include <sys/wait.h>
179# include <unistd.h> 212# include <unistd.h>
180#else 213#else
181# include <io.h> 214# include <io.h>
182# define WIN32_LEAN_AND_MEAN 215# define WIN32_LEAN_AND_MEAN
216# include <winsock2.h>
183# include <windows.h> 217# include <windows.h>
184# ifndef EV_SELECT_IS_WINSOCKET 218# ifndef EV_SELECT_IS_WINSOCKET
185# define EV_SELECT_IS_WINSOCKET 1 219# define EV_SELECT_IS_WINSOCKET 1
186# endif 220# endif
221# undef EV_AVOID_STDIO
187#endif 222#endif
188 223
189/* this block tries to deduce configuration from header-defined symbols and defaults */ 224/* this block tries to deduce configuration from header-defined symbols and defaults */
190 225
191/* try to deduce the maximum number of signals on this platform */ 226/* try to deduce the maximum number of signals on this platform */
192#if defined (EV_NSIG) 227#if defined EV_NSIG
193/* use what's provided */ 228/* use what's provided */
194#elif defined (NSIG) 229#elif defined NSIG
195# define EV_NSIG (NSIG) 230# define EV_NSIG (NSIG)
196#elif defined(_NSIG) 231#elif defined _NSIG
197# define EV_NSIG (_NSIG) 232# define EV_NSIG (_NSIG)
198#elif defined (SIGMAX) 233#elif defined SIGMAX
199# define EV_NSIG (SIGMAX+1) 234# define EV_NSIG (SIGMAX+1)
200#elif defined (SIG_MAX) 235#elif defined SIG_MAX
201# define EV_NSIG (SIG_MAX+1) 236# define EV_NSIG (SIG_MAX+1)
202#elif defined (_SIG_MAX) 237#elif defined _SIG_MAX
203# define EV_NSIG (_SIG_MAX+1) 238# define EV_NSIG (_SIG_MAX+1)
204#elif defined (MAXSIG) 239#elif defined MAXSIG
205# define EV_NSIG (MAXSIG+1) 240# define EV_NSIG (MAXSIG+1)
206#elif defined (MAX_SIG) 241#elif defined MAX_SIG
207# define EV_NSIG (MAX_SIG+1) 242# define EV_NSIG (MAX_SIG+1)
208#elif defined (SIGARRAYSIZE) 243#elif defined SIGARRAYSIZE
209# define EV_NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */ 244# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
210#elif defined (_sys_nsig) 245#elif defined _sys_nsig
211# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 246# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
212#else 247#else
213# error "unable to find value for NSIG, please report" 248# define EV_NSIG (8 * sizeof (sigset_t) + 1)
214/* to make it compile regardless, just remove the above line */ 249#endif
215# define EV_NSIG 65 250
251#ifndef EV_USE_FLOOR
252# define EV_USE_FLOOR 0
216#endif 253#endif
217 254
218#ifndef EV_USE_CLOCK_SYSCALL 255#ifndef EV_USE_CLOCK_SYSCALL
219# if __linux && __GLIBC__ >= 2 256# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
220# define EV_USE_CLOCK_SYSCALL 1 257# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
221# else 258# else
222# define EV_USE_CLOCK_SYSCALL 0 259# define EV_USE_CLOCK_SYSCALL 0
223# endif 260# endif
224#endif 261#endif
225 262
263#if !(_POSIX_TIMERS > 0)
264# ifndef EV_USE_MONOTONIC
265# define EV_USE_MONOTONIC 0
266# endif
267# ifndef EV_USE_REALTIME
268# define EV_USE_REALTIME 0
269# endif
270#endif
271
226#ifndef EV_USE_MONOTONIC 272#ifndef EV_USE_MONOTONIC
227# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 273# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
228# define EV_USE_MONOTONIC 1 274# define EV_USE_MONOTONIC EV_FEATURE_OS
229# else 275# else
230# define EV_USE_MONOTONIC 0 276# define EV_USE_MONOTONIC 0
231# endif 277# endif
232#endif 278#endif
233 279
… …
235# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 281# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
236#endif 282#endif
237 283
238#ifndef EV_USE_NANOSLEEP 284#ifndef EV_USE_NANOSLEEP
239# if _POSIX_C_SOURCE >= 199309L 285# if _POSIX_C_SOURCE >= 199309L
240# define EV_USE_NANOSLEEP 1 286# define EV_USE_NANOSLEEP EV_FEATURE_OS
241# else 287# else
242# define EV_USE_NANOSLEEP 0 288# define EV_USE_NANOSLEEP 0
243# endif 289# endif
244#endif 290#endif
245 291
246#ifndef EV_USE_SELECT 292#ifndef EV_USE_SELECT
247# define EV_USE_SELECT 1 293# define EV_USE_SELECT EV_FEATURE_BACKENDS
248#endif 294#endif
249 295
250#ifndef EV_USE_POLL 296#ifndef EV_USE_POLL
251# ifdef _WIN32 297# ifdef _WIN32
252# define EV_USE_POLL 0 298# define EV_USE_POLL 0
253# else 299# else
254# define EV_USE_POLL 1 300# define EV_USE_POLL EV_FEATURE_BACKENDS
255# endif 301# endif
256#endif 302#endif
257 303
258#ifndef EV_USE_EPOLL 304#ifndef EV_USE_EPOLL
259# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 305# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
260# define EV_USE_EPOLL 1 306# define EV_USE_EPOLL EV_FEATURE_BACKENDS
261# else 307# else
262# define EV_USE_EPOLL 0 308# define EV_USE_EPOLL 0
263# endif 309# endif
264#endif 310#endif
265 311
… …
271# define EV_USE_PORT 0 317# define EV_USE_PORT 0
272#endif 318#endif
273 319
274#ifndef EV_USE_INOTIFY 320#ifndef EV_USE_INOTIFY
275# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 321# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
276# define EV_USE_INOTIFY 1 322# define EV_USE_INOTIFY EV_FEATURE_OS
277# else 323# else
278# define EV_USE_INOTIFY 0 324# define EV_USE_INOTIFY 0
279# endif 325# endif
280#endif 326#endif
281 327
282#ifndef EV_PID_HASHSIZE 328#ifndef EV_PID_HASHSIZE
283# if EV_MINIMAL 329# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
284# define EV_PID_HASHSIZE 1
285# else
286# define EV_PID_HASHSIZE 16
287# endif
288#endif 330#endif
289 331
290#ifndef EV_INOTIFY_HASHSIZE 332#ifndef EV_INOTIFY_HASHSIZE
291# if EV_MINIMAL 333# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
292# define EV_INOTIFY_HASHSIZE 1
293# else
294# define EV_INOTIFY_HASHSIZE 16
295# endif
296#endif 334#endif
297 335
298#ifndef EV_USE_EVENTFD 336#ifndef EV_USE_EVENTFD
299# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 337# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
300# define EV_USE_EVENTFD 1 338# define EV_USE_EVENTFD EV_FEATURE_OS
301# else 339# else
302# define EV_USE_EVENTFD 0 340# define EV_USE_EVENTFD 0
303# endif 341# endif
304#endif 342#endif
305 343
306#ifndef EV_USE_SIGNALFD 344#ifndef EV_USE_SIGNALFD
307# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 345# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
308# define EV_USE_SIGNALFD 1 346# define EV_USE_SIGNALFD EV_FEATURE_OS
309# else 347# else
310# define EV_USE_SIGNALFD 0 348# define EV_USE_SIGNALFD 0
311# endif 349# endif
312#endif 350#endif
313 351
… …
316# define EV_USE_4HEAP 1 354# define EV_USE_4HEAP 1
317# define EV_HEAP_CACHE_AT 1 355# define EV_HEAP_CACHE_AT 1
318#endif 356#endif
319 357
320#ifndef EV_VERIFY 358#ifndef EV_VERIFY
321# define EV_VERIFY !EV_MINIMAL 359# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
322#endif 360#endif
323 361
324#ifndef EV_USE_4HEAP 362#ifndef EV_USE_4HEAP
325# define EV_USE_4HEAP !EV_MINIMAL 363# define EV_USE_4HEAP EV_FEATURE_DATA
326#endif 364#endif
327 365
328#ifndef EV_HEAP_CACHE_AT 366#ifndef EV_HEAP_CACHE_AT
329# define EV_HEAP_CACHE_AT !EV_MINIMAL 367# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
368#endif
369
370#ifdef __ANDROID__
371/* supposedly, android doesn't typedef fd_mask */
372# undef EV_USE_SELECT
373# define EV_USE_SELECT 0
374/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
375# undef EV_USE_CLOCK_SYSCALL
376# define EV_USE_CLOCK_SYSCALL 0
377#endif
378
379/* aix's poll.h seems to cause lots of trouble */
380#ifdef _AIX
381/* AIX has a completely broken poll.h header */
382# undef EV_USE_POLL
383# define EV_USE_POLL 0
330#endif 384#endif
331 385
332/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 386/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
333/* which makes programs even slower. might work on other unices, too. */ 387/* which makes programs even slower. might work on other unices, too. */
334#if EV_USE_CLOCK_SYSCALL 388#if EV_USE_CLOCK_SYSCALL
335# include <syscall.h> 389# include <sys/syscall.h>
336# ifdef SYS_clock_gettime 390# ifdef SYS_clock_gettime
337# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 391# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
338# undef EV_USE_MONOTONIC 392# undef EV_USE_MONOTONIC
339# define EV_USE_MONOTONIC 1 393# define EV_USE_MONOTONIC 1
340# else 394# else
… …
359# undef EV_USE_INOTIFY 413# undef EV_USE_INOTIFY
360# define EV_USE_INOTIFY 0 414# define EV_USE_INOTIFY 0
361#endif 415#endif
362 416
363#if !EV_USE_NANOSLEEP 417#if !EV_USE_NANOSLEEP
364# ifndef _WIN32 418/* hp-ux has it in sys/time.h, which we unconditionally include above */
419# if !defined _WIN32 && !defined __hpux
365# include <sys/select.h> 420# include <sys/select.h>
366# endif 421# endif
367#endif 422#endif
368 423
369#if EV_USE_INOTIFY 424#if EV_USE_INOTIFY
370# include <sys/utsname.h>
371# include <sys/statfs.h> 425# include <sys/statfs.h>
372# include <sys/inotify.h> 426# include <sys/inotify.h>
373/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 427/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
374# ifndef IN_DONT_FOLLOW 428# ifndef IN_DONT_FOLLOW
375# undef EV_USE_INOTIFY 429# undef EV_USE_INOTIFY
376# define EV_USE_INOTIFY 0 430# define EV_USE_INOTIFY 0
377# endif 431# endif
378#endif
379
380#if EV_SELECT_IS_WINSOCKET
381# include <winsock.h>
382#endif 432#endif
383 433
384#if EV_USE_EVENTFD 434#if EV_USE_EVENTFD
385/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 435/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
386# include <stdint.h> 436# include <stdint.h>
… …
392# define EFD_CLOEXEC O_CLOEXEC 442# define EFD_CLOEXEC O_CLOEXEC
393# else 443# else
394# define EFD_CLOEXEC 02000000 444# define EFD_CLOEXEC 02000000
395# endif 445# endif
396# endif 446# endif
397# ifdef __cplusplus
398extern "C" {
399# endif
400int eventfd (unsigned int initval, int flags); 447EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
401# ifdef __cplusplus
402}
403# endif
404#endif 448#endif
405 449
406#if EV_USE_SIGNALFD 450#if EV_USE_SIGNALFD
407/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 451/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
408# include <stdint.h> 452# include <stdint.h>
… …
414# define SFD_CLOEXEC O_CLOEXEC 458# define SFD_CLOEXEC O_CLOEXEC
415# else 459# else
416# define SFD_CLOEXEC 02000000 460# define SFD_CLOEXEC 02000000
417# endif 461# endif
418# endif 462# endif
419# ifdef __cplusplus
420extern "C" {
421# endif
422int signalfd (int fd, const sigset_t *mask, int flags); 463EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
423 464
424struct signalfd_siginfo 465struct signalfd_siginfo
425{ 466{
426 uint32_t ssi_signo; 467 uint32_t ssi_signo;
427 char pad[128 - sizeof (uint32_t)]; 468 char pad[128 - sizeof (uint32_t)];
428}; 469};
429# ifdef __cplusplus
430}
431# endif 470#endif
432#endif
433
434 471
435/**/ 472/**/
436 473
437#if EV_VERIFY >= 3 474#if EV_VERIFY >= 3
438# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 475# define EV_FREQUENT_CHECK ev_verify (EV_A)
439#else 476#else
440# define EV_FREQUENT_CHECK do { } while (0) 477# define EV_FREQUENT_CHECK do { } while (0)
441#endif 478#endif
442 479
443/* 480/*
444 * This is used to avoid floating point rounding problems. 481 * This is used to work around floating point rounding problems.
445 * It is added to ev_rt_now when scheduling periodics
446 * to ensure progress, time-wise, even when rounding
447 * errors are against us.
448 * This value is good at least till the year 4000. 482 * This value is good at least till the year 4000.
449 * Better solutions welcome.
450 */ 483 */
451#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 484#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
485/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
452 486
453#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 487#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
454#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 488#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
455 489
490#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
491#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
492
493/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
494/* ECB.H BEGIN */
495/*
496 * libecb - http://software.schmorp.de/pkg/libecb
497 *
498 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
499 * Copyright (©) 2011 Emanuele Giaquinta
500 * All rights reserved.
501 *
502 * Redistribution and use in source and binary forms, with or without modifica-
503 * tion, are permitted provided that the following conditions are met:
504 *
505 * 1. Redistributions of source code must retain the above copyright notice,
506 * this list of conditions and the following disclaimer.
507 *
508 * 2. Redistributions in binary form must reproduce the above copyright
509 * notice, this list of conditions and the following disclaimer in the
510 * documentation and/or other materials provided with the distribution.
511 *
512 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
513 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
514 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
515 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
516 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
517 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
518 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
519 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
520 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
521 * OF THE POSSIBILITY OF SUCH DAMAGE.
522 *
523 * Alternatively, the contents of this file may be used under the terms of
524 * the GNU General Public License ("GPL") version 2 or any later version,
525 * in which case the provisions of the GPL are applicable instead of
526 * the above. If you wish to allow the use of your version of this file
527 * only under the terms of the GPL and not to allow others to use your
528 * version of this file under the BSD license, indicate your decision
529 * by deleting the provisions above and replace them with the notice
530 * and other provisions required by the GPL. If you do not delete the
531 * provisions above, a recipient may use your version of this file under
532 * either the BSD or the GPL.
533 */
534
535#ifndef ECB_H
536#define ECB_H
537
538/* 16 bits major, 16 bits minor */
539#define ECB_VERSION 0x00010005
540
541#ifdef _WIN32
542 typedef signed char int8_t;
543 typedef unsigned char uint8_t;
544 typedef signed short int16_t;
545 typedef unsigned short uint16_t;
546 typedef signed int int32_t;
547 typedef unsigned int uint32_t;
456#if __GNUC__ >= 4 548 #if __GNUC__
549 typedef signed long long int64_t;
550 typedef unsigned long long uint64_t;
551 #else /* _MSC_VER || __BORLANDC__ */
552 typedef signed __int64 int64_t;
553 typedef unsigned __int64 uint64_t;
554 #endif
555 #ifdef _WIN64
556 #define ECB_PTRSIZE 8
557 typedef uint64_t uintptr_t;
558 typedef int64_t intptr_t;
559 #else
560 #define ECB_PTRSIZE 4
561 typedef uint32_t uintptr_t;
562 typedef int32_t intptr_t;
563 #endif
564#else
565 #include <inttypes.h>
566 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
567 #define ECB_PTRSIZE 8
568 #else
569 #define ECB_PTRSIZE 4
570 #endif
571#endif
572
573#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
574#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
575
576/* work around x32 idiocy by defining proper macros */
577#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
578 #if _ILP32
579 #define ECB_AMD64_X32 1
580 #else
581 #define ECB_AMD64 1
582 #endif
583#endif
584
585/* many compilers define _GNUC_ to some versions but then only implement
586 * what their idiot authors think are the "more important" extensions,
587 * causing enormous grief in return for some better fake benchmark numbers.
588 * or so.
589 * we try to detect these and simply assume they are not gcc - if they have
590 * an issue with that they should have done it right in the first place.
591 */
592#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
593 #define ECB_GCC_VERSION(major,minor) 0
594#else
595 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
596#endif
597
598#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
599
600#if __clang__ && defined __has_builtin
601 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
602#else
603 #define ECB_CLANG_BUILTIN(x) 0
604#endif
605
606#if __clang__ && defined __has_extension
607 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
608#else
609 #define ECB_CLANG_EXTENSION(x) 0
610#endif
611
612#define ECB_CPP (__cplusplus+0)
613#define ECB_CPP11 (__cplusplus >= 201103L)
614
615#if ECB_CPP
616 #define ECB_C 0
617 #define ECB_STDC_VERSION 0
618#else
619 #define ECB_C 1
620 #define ECB_STDC_VERSION __STDC_VERSION__
621#endif
622
623#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
624#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
625
626#if ECB_CPP
627 #define ECB_EXTERN_C extern "C"
628 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
629 #define ECB_EXTERN_C_END }
630#else
631 #define ECB_EXTERN_C extern
632 #define ECB_EXTERN_C_BEG
633 #define ECB_EXTERN_C_END
634#endif
635
636/*****************************************************************************/
637
638/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
639/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
640
641#if ECB_NO_THREADS
642 #define ECB_NO_SMP 1
643#endif
644
645#if ECB_NO_SMP
646 #define ECB_MEMORY_FENCE do { } while (0)
647#endif
648
649/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
650#if __xlC__ && ECB_CPP
651 #include <builtins.h>
652#endif
653
654#if 1400 <= _MSC_VER
655 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
656#endif
657
658#ifndef ECB_MEMORY_FENCE
659 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
660 #if __i386 || __i386__
661 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
662 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
663 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
664 #elif ECB_GCC_AMD64
665 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
666 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
667 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
668 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
669 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
670 #elif defined __ARM_ARCH_2__ \
671 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
672 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
673 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
674 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
675 || defined __ARM_ARCH_5TEJ__
676 /* should not need any, unless running old code on newer cpu - arm doesn't support that */
677 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
678 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
679 || defined __ARM_ARCH_6T2__
680 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
681 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
682 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
683 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
684 #elif __aarch64__
685 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
686 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
687 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
688 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
689 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
690 #elif defined __s390__ || defined __s390x__
691 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
692 #elif defined __mips__
693 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
694 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
695 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
696 #elif defined __alpha__
697 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
698 #elif defined __hppa__
699 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
700 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
701 #elif defined __ia64__
702 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
703 #elif defined __m68k__
704 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
705 #elif defined __m88k__
706 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
707 #elif defined __sh__
708 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
709 #endif
710 #endif
711#endif
712
713#ifndef ECB_MEMORY_FENCE
714 #if ECB_GCC_VERSION(4,7)
715 /* see comment below (stdatomic.h) about the C11 memory model. */
716 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
717 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
718 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
719
720 #elif ECB_CLANG_EXTENSION(c_atomic)
721 /* see comment below (stdatomic.h) about the C11 memory model. */
722 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
723 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
724 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
725
726 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
727 #define ECB_MEMORY_FENCE __sync_synchronize ()
728 #elif _MSC_VER >= 1500 /* VC++ 2008 */
729 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
730 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
731 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
732 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
733 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
734 #elif _MSC_VER >= 1400 /* VC++ 2005 */
735 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
736 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
737 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
738 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
739 #elif defined _WIN32
740 #include <WinNT.h>
741 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
742 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
743 #include <mbarrier.h>
744 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
745 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
746 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
747 #elif __xlC__
748 #define ECB_MEMORY_FENCE __sync ()
749 #endif
750#endif
751
752#ifndef ECB_MEMORY_FENCE
753 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
754 /* we assume that these memory fences work on all variables/all memory accesses, */
755 /* not just C11 atomics and atomic accesses */
756 #include <stdatomic.h>
757 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
758 /* any fence other than seq_cst, which isn't very efficient for us. */
759 /* Why that is, we don't know - either the C11 memory model is quite useless */
760 /* for most usages, or gcc and clang have a bug */
761 /* I *currently* lean towards the latter, and inefficiently implement */
762 /* all three of ecb's fences as a seq_cst fence */
763 /* Update, gcc-4.8 generates mfence for all c++ fences, but nothing */
764 /* for all __atomic_thread_fence's except seq_cst */
765 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
766 #endif
767#endif
768
769#ifndef ECB_MEMORY_FENCE
770 #if !ECB_AVOID_PTHREADS
771 /*
772 * if you get undefined symbol references to pthread_mutex_lock,
773 * or failure to find pthread.h, then you should implement
774 * the ECB_MEMORY_FENCE operations for your cpu/compiler
775 * OR provide pthread.h and link against the posix thread library
776 * of your system.
777 */
778 #include <pthread.h>
779 #define ECB_NEEDS_PTHREADS 1
780 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
781
782 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
783 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
784 #endif
785#endif
786
787#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
788 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
789#endif
790
791#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
792 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
793#endif
794
795/*****************************************************************************/
796
797#if ECB_CPP
798 #define ecb_inline static inline
799#elif ECB_GCC_VERSION(2,5)
800 #define ecb_inline static __inline__
801#elif ECB_C99
802 #define ecb_inline static inline
803#else
804 #define ecb_inline static
805#endif
806
807#if ECB_GCC_VERSION(3,3)
808 #define ecb_restrict __restrict__
809#elif ECB_C99
810 #define ecb_restrict restrict
811#else
812 #define ecb_restrict
813#endif
814
815typedef int ecb_bool;
816
817#define ECB_CONCAT_(a, b) a ## b
818#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
819#define ECB_STRINGIFY_(a) # a
820#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
821#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
822
823#define ecb_function_ ecb_inline
824
825#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
826 #define ecb_attribute(attrlist) __attribute__ (attrlist)
827#else
828 #define ecb_attribute(attrlist)
829#endif
830
831#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
832 #define ecb_is_constant(expr) __builtin_constant_p (expr)
833#else
834 /* possible C11 impl for integral types
835 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
836 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
837
838 #define ecb_is_constant(expr) 0
839#endif
840
841#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
457# define expect(expr,value) __builtin_expect ((expr),(value)) 842 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
458# define noinline __attribute__ ((noinline))
459#else 843#else
460# define expect(expr,value) (expr) 844 #define ecb_expect(expr,value) (expr)
461# define noinline
462# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
463# define inline
464# endif 845#endif
465#endif
466 846
847#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
848 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
849#else
850 #define ecb_prefetch(addr,rw,locality)
851#endif
852
853/* no emulation for ecb_decltype */
854#if ECB_CPP11
855 // older implementations might have problems with decltype(x)::type, work around it
856 template<class T> struct ecb_decltype_t { typedef T type; };
857 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
858#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
859 #define ecb_decltype(x) __typeof__ (x)
860#endif
861
862#if _MSC_VER >= 1300
863 #define ecb_deprecated __declspec (deprecated)
864#else
865 #define ecb_deprecated ecb_attribute ((__deprecated__))
866#endif
867
868#if _MSC_VER >= 1500
869 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
870#elif ECB_GCC_VERSION(4,5)
871 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
872#else
873 #define ecb_deprecated_message(msg) ecb_deprecated
874#endif
875
876#if _MSC_VER >= 1400
877 #define ecb_noinline __declspec (noinline)
878#else
879 #define ecb_noinline ecb_attribute ((__noinline__))
880#endif
881
882#define ecb_unused ecb_attribute ((__unused__))
883#define ecb_const ecb_attribute ((__const__))
884#define ecb_pure ecb_attribute ((__pure__))
885
886#if ECB_C11 || __IBMC_NORETURN
887 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
888 #define ecb_noreturn _Noreturn
889#elif ECB_CPP11
890 #define ecb_noreturn [[noreturn]]
891#elif _MSC_VER >= 1200
892 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
893 #define ecb_noreturn __declspec (noreturn)
894#else
895 #define ecb_noreturn ecb_attribute ((__noreturn__))
896#endif
897
898#if ECB_GCC_VERSION(4,3)
899 #define ecb_artificial ecb_attribute ((__artificial__))
900 #define ecb_hot ecb_attribute ((__hot__))
901 #define ecb_cold ecb_attribute ((__cold__))
902#else
903 #define ecb_artificial
904 #define ecb_hot
905 #define ecb_cold
906#endif
907
908/* put around conditional expressions if you are very sure that the */
909/* expression is mostly true or mostly false. note that these return */
910/* booleans, not the expression. */
467#define expect_false(expr) expect ((expr) != 0, 0) 911#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
468#define expect_true(expr) expect ((expr) != 0, 1) 912#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
913/* for compatibility to the rest of the world */
914#define ecb_likely(expr) ecb_expect_true (expr)
915#define ecb_unlikely(expr) ecb_expect_false (expr)
916
917/* count trailing zero bits and count # of one bits */
918#if ECB_GCC_VERSION(3,4) \
919 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
920 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
921 && ECB_CLANG_BUILTIN(__builtin_popcount))
922 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
923 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
924 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
925 #define ecb_ctz32(x) __builtin_ctz (x)
926 #define ecb_ctz64(x) __builtin_ctzll (x)
927 #define ecb_popcount32(x) __builtin_popcount (x)
928 /* no popcountll */
929#else
930 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
931 ecb_function_ ecb_const int
932 ecb_ctz32 (uint32_t x)
933 {
934#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
935 unsigned long r;
936 _BitScanForward (&r, x);
937 return (int)r;
938#else
939 int r = 0;
940
941 x &= ~x + 1; /* this isolates the lowest bit */
942
943#if ECB_branchless_on_i386
944 r += !!(x & 0xaaaaaaaa) << 0;
945 r += !!(x & 0xcccccccc) << 1;
946 r += !!(x & 0xf0f0f0f0) << 2;
947 r += !!(x & 0xff00ff00) << 3;
948 r += !!(x & 0xffff0000) << 4;
949#else
950 if (x & 0xaaaaaaaa) r += 1;
951 if (x & 0xcccccccc) r += 2;
952 if (x & 0xf0f0f0f0) r += 4;
953 if (x & 0xff00ff00) r += 8;
954 if (x & 0xffff0000) r += 16;
955#endif
956
957 return r;
958#endif
959 }
960
961 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
962 ecb_function_ ecb_const int
963 ecb_ctz64 (uint64_t x)
964 {
965#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
966 unsigned long r;
967 _BitScanForward64 (&r, x);
968 return (int)r;
969#else
970 int shift = x & 0xffffffff ? 0 : 32;
971 return ecb_ctz32 (x >> shift) + shift;
972#endif
973 }
974
975 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
976 ecb_function_ ecb_const int
977 ecb_popcount32 (uint32_t x)
978 {
979 x -= (x >> 1) & 0x55555555;
980 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
981 x = ((x >> 4) + x) & 0x0f0f0f0f;
982 x *= 0x01010101;
983
984 return x >> 24;
985 }
986
987 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
988 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
989 {
990#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
991 unsigned long r;
992 _BitScanReverse (&r, x);
993 return (int)r;
994#else
995 int r = 0;
996
997 if (x >> 16) { x >>= 16; r += 16; }
998 if (x >> 8) { x >>= 8; r += 8; }
999 if (x >> 4) { x >>= 4; r += 4; }
1000 if (x >> 2) { x >>= 2; r += 2; }
1001 if (x >> 1) { r += 1; }
1002
1003 return r;
1004#endif
1005 }
1006
1007 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
1008 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
1009 {
1010#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1011 unsigned long r;
1012 _BitScanReverse64 (&r, x);
1013 return (int)r;
1014#else
1015 int r = 0;
1016
1017 if (x >> 32) { x >>= 32; r += 32; }
1018
1019 return r + ecb_ld32 (x);
1020#endif
1021 }
1022#endif
1023
1024ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
1025ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
1026ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
1027ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
1028
1029ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
1030ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
1031{
1032 return ( (x * 0x0802U & 0x22110U)
1033 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
1034}
1035
1036ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
1037ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
1038{
1039 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
1040 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
1041 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
1042 x = ( x >> 8 ) | ( x << 8);
1043
1044 return x;
1045}
1046
1047ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
1048ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
1049{
1050 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
1051 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
1052 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
1053 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
1054 x = ( x >> 16 ) | ( x << 16);
1055
1056 return x;
1057}
1058
1059/* popcount64 is only available on 64 bit cpus as gcc builtin */
1060/* so for this version we are lazy */
1061ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
1062ecb_function_ ecb_const int
1063ecb_popcount64 (uint64_t x)
1064{
1065 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
1066}
1067
1068ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
1069ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
1070ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
1071ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
1072ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
1073ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
1074ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
1075ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
1076
1077ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
1078ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
1079ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
1080ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
1081ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
1082ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
1083ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
1084ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
1085
1086#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1087 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1088 #define ecb_bswap16(x) __builtin_bswap16 (x)
1089 #else
1090 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1091 #endif
1092 #define ecb_bswap32(x) __builtin_bswap32 (x)
1093 #define ecb_bswap64(x) __builtin_bswap64 (x)
1094#elif _MSC_VER
1095 #include <stdlib.h>
1096 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1097 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1098 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
1099#else
1100 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
1101 ecb_function_ ecb_const uint16_t
1102 ecb_bswap16 (uint16_t x)
1103 {
1104 return ecb_rotl16 (x, 8);
1105 }
1106
1107 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
1108 ecb_function_ ecb_const uint32_t
1109 ecb_bswap32 (uint32_t x)
1110 {
1111 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
1112 }
1113
1114 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
1115 ecb_function_ ecb_const uint64_t
1116 ecb_bswap64 (uint64_t x)
1117 {
1118 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
1119 }
1120#endif
1121
1122#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
1123 #define ecb_unreachable() __builtin_unreachable ()
1124#else
1125 /* this seems to work fine, but gcc always emits a warning for it :/ */
1126 ecb_inline ecb_noreturn void ecb_unreachable (void);
1127 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
1128#endif
1129
1130/* try to tell the compiler that some condition is definitely true */
1131#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
1132
1133ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
1134ecb_inline ecb_const uint32_t
1135ecb_byteorder_helper (void)
1136{
1137 /* the union code still generates code under pressure in gcc, */
1138 /* but less than using pointers, and always seems to */
1139 /* successfully return a constant. */
1140 /* the reason why we have this horrible preprocessor mess */
1141 /* is to avoid it in all cases, at least on common architectures */
1142 /* or when using a recent enough gcc version (>= 4.6) */
1143#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1144 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1145 #define ECB_LITTLE_ENDIAN 1
1146 return 0x44332211;
1147#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1148 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1149 #define ECB_BIG_ENDIAN 1
1150 return 0x11223344;
1151#else
1152 union
1153 {
1154 uint8_t c[4];
1155 uint32_t u;
1156 } u = { 0x11, 0x22, 0x33, 0x44 };
1157 return u.u;
1158#endif
1159}
1160
1161ecb_inline ecb_const ecb_bool ecb_big_endian (void);
1162ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
1163ecb_inline ecb_const ecb_bool ecb_little_endian (void);
1164ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
1165
1166#if ECB_GCC_VERSION(3,0) || ECB_C99
1167 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1168#else
1169 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1170#endif
1171
1172#if ECB_CPP
1173 template<typename T>
1174 static inline T ecb_div_rd (T val, T div)
1175 {
1176 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1177 }
1178 template<typename T>
1179 static inline T ecb_div_ru (T val, T div)
1180 {
1181 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1182 }
1183#else
1184 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1185 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1186#endif
1187
1188#if ecb_cplusplus_does_not_suck
1189 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1190 template<typename T, int N>
1191 static inline int ecb_array_length (const T (&arr)[N])
1192 {
1193 return N;
1194 }
1195#else
1196 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1197#endif
1198
1199ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1200ecb_function_ ecb_const uint32_t
1201ecb_binary16_to_binary32 (uint32_t x)
1202{
1203 unsigned int s = (x & 0x8000) << (31 - 15);
1204 int e = (x >> 10) & 0x001f;
1205 unsigned int m = x & 0x03ff;
1206
1207 if (ecb_expect_false (e == 31))
1208 /* infinity or NaN */
1209 e = 255 - (127 - 15);
1210 else if (ecb_expect_false (!e))
1211 {
1212 if (ecb_expect_true (!m))
1213 /* zero, handled by code below by forcing e to 0 */
1214 e = 0 - (127 - 15);
1215 else
1216 {
1217 /* subnormal, renormalise */
1218 unsigned int s = 10 - ecb_ld32 (m);
1219
1220 m = (m << s) & 0x3ff; /* mask implicit bit */
1221 e -= s - 1;
1222 }
1223 }
1224
1225 /* e and m now are normalised, or zero, (or inf or nan) */
1226 e += 127 - 15;
1227
1228 return s | (e << 23) | (m << (23 - 10));
1229}
1230
1231ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1232ecb_function_ ecb_const uint16_t
1233ecb_binary32_to_binary16 (uint32_t x)
1234{
1235 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1236 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1237 unsigned int m = x & 0x007fffff;
1238
1239 x &= 0x7fffffff;
1240
1241 /* if it's within range of binary16 normals, use fast path */
1242 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1243 {
1244 /* mantissa round-to-even */
1245 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1246
1247 /* handle overflow */
1248 if (ecb_expect_false (m >= 0x00800000))
1249 {
1250 m >>= 1;
1251 e += 1;
1252 }
1253
1254 return s | (e << 10) | (m >> (23 - 10));
1255 }
1256
1257 /* handle large numbers and infinity */
1258 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1259 return s | 0x7c00;
1260
1261 /* handle zero, subnormals and small numbers */
1262 if (ecb_expect_true (x < 0x38800000))
1263 {
1264 /* zero */
1265 if (ecb_expect_true (!x))
1266 return s;
1267
1268 /* handle subnormals */
1269
1270 /* too small, will be zero */
1271 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1272 return s;
1273
1274 m |= 0x00800000; /* make implicit bit explicit */
1275
1276 /* very tricky - we need to round to the nearest e (+10) bit value */
1277 {
1278 unsigned int bits = 14 - e;
1279 unsigned int half = (1 << (bits - 1)) - 1;
1280 unsigned int even = (m >> bits) & 1;
1281
1282 /* if this overflows, we will end up with a normalised number */
1283 m = (m + half + even) >> bits;
1284 }
1285
1286 return s | m;
1287 }
1288
1289 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1290 m >>= 13;
1291
1292 return s | 0x7c00 | m | !m;
1293}
1294
1295/*******************************************************************************/
1296/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1297
1298/* basically, everything uses "ieee pure-endian" floating point numbers */
1299/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1300#if 0 \
1301 || __i386 || __i386__ \
1302 || ECB_GCC_AMD64 \
1303 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1304 || defined __s390__ || defined __s390x__ \
1305 || defined __mips__ \
1306 || defined __alpha__ \
1307 || defined __hppa__ \
1308 || defined __ia64__ \
1309 || defined __m68k__ \
1310 || defined __m88k__ \
1311 || defined __sh__ \
1312 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1313 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1314 || defined __aarch64__
1315 #define ECB_STDFP 1
1316 #include <string.h> /* for memcpy */
1317#else
1318 #define ECB_STDFP 0
1319#endif
1320
1321#ifndef ECB_NO_LIBM
1322
1323 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1324
1325 /* only the oldest of old doesn't have this one. solaris. */
1326 #ifdef INFINITY
1327 #define ECB_INFINITY INFINITY
1328 #else
1329 #define ECB_INFINITY HUGE_VAL
1330 #endif
1331
1332 #ifdef NAN
1333 #define ECB_NAN NAN
1334 #else
1335 #define ECB_NAN ECB_INFINITY
1336 #endif
1337
1338 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1339 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1340 #define ecb_frexpf(x,e) frexpf ((x), (e))
1341 #else
1342 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1343 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1344 #endif
1345
1346 /* convert a float to ieee single/binary32 */
1347 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1348 ecb_function_ ecb_const uint32_t
1349 ecb_float_to_binary32 (float x)
1350 {
1351 uint32_t r;
1352
1353 #if ECB_STDFP
1354 memcpy (&r, &x, 4);
1355 #else
1356 /* slow emulation, works for anything but -0 */
1357 uint32_t m;
1358 int e;
1359
1360 if (x == 0e0f ) return 0x00000000U;
1361 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1362 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1363 if (x != x ) return 0x7fbfffffU;
1364
1365 m = ecb_frexpf (x, &e) * 0x1000000U;
1366
1367 r = m & 0x80000000U;
1368
1369 if (r)
1370 m = -m;
1371
1372 if (e <= -126)
1373 {
1374 m &= 0xffffffU;
1375 m >>= (-125 - e);
1376 e = -126;
1377 }
1378
1379 r |= (e + 126) << 23;
1380 r |= m & 0x7fffffU;
1381 #endif
1382
1383 return r;
1384 }
1385
1386 /* converts an ieee single/binary32 to a float */
1387 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1388 ecb_function_ ecb_const float
1389 ecb_binary32_to_float (uint32_t x)
1390 {
1391 float r;
1392
1393 #if ECB_STDFP
1394 memcpy (&r, &x, 4);
1395 #else
1396 /* emulation, only works for normals and subnormals and +0 */
1397 int neg = x >> 31;
1398 int e = (x >> 23) & 0xffU;
1399
1400 x &= 0x7fffffU;
1401
1402 if (e)
1403 x |= 0x800000U;
1404 else
1405 e = 1;
1406
1407 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1408 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1409
1410 r = neg ? -r : r;
1411 #endif
1412
1413 return r;
1414 }
1415
1416 /* convert a double to ieee double/binary64 */
1417 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1418 ecb_function_ ecb_const uint64_t
1419 ecb_double_to_binary64 (double x)
1420 {
1421 uint64_t r;
1422
1423 #if ECB_STDFP
1424 memcpy (&r, &x, 8);
1425 #else
1426 /* slow emulation, works for anything but -0 */
1427 uint64_t m;
1428 int e;
1429
1430 if (x == 0e0 ) return 0x0000000000000000U;
1431 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1432 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1433 if (x != x ) return 0X7ff7ffffffffffffU;
1434
1435 m = frexp (x, &e) * 0x20000000000000U;
1436
1437 r = m & 0x8000000000000000;;
1438
1439 if (r)
1440 m = -m;
1441
1442 if (e <= -1022)
1443 {
1444 m &= 0x1fffffffffffffU;
1445 m >>= (-1021 - e);
1446 e = -1022;
1447 }
1448
1449 r |= ((uint64_t)(e + 1022)) << 52;
1450 r |= m & 0xfffffffffffffU;
1451 #endif
1452
1453 return r;
1454 }
1455
1456 /* converts an ieee double/binary64 to a double */
1457 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1458 ecb_function_ ecb_const double
1459 ecb_binary64_to_double (uint64_t x)
1460 {
1461 double r;
1462
1463 #if ECB_STDFP
1464 memcpy (&r, &x, 8);
1465 #else
1466 /* emulation, only works for normals and subnormals and +0 */
1467 int neg = x >> 63;
1468 int e = (x >> 52) & 0x7ffU;
1469
1470 x &= 0xfffffffffffffU;
1471
1472 if (e)
1473 x |= 0x10000000000000U;
1474 else
1475 e = 1;
1476
1477 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1478 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1479
1480 r = neg ? -r : r;
1481 #endif
1482
1483 return r;
1484 }
1485
1486 /* convert a float to ieee half/binary16 */
1487 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1488 ecb_function_ ecb_const uint16_t
1489 ecb_float_to_binary16 (float x)
1490 {
1491 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1492 }
1493
1494 /* convert an ieee half/binary16 to float */
1495 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1496 ecb_function_ ecb_const float
1497 ecb_binary16_to_float (uint16_t x)
1498 {
1499 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1500 }
1501
1502#endif
1503
1504#endif
1505
1506/* ECB.H END */
1507
1508#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1509/* if your architecture doesn't need memory fences, e.g. because it is
1510 * single-cpu/core, or if you use libev in a project that doesn't use libev
1511 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
1512 * libev, in which cases the memory fences become nops.
1513 * alternatively, you can remove this #error and link against libpthread,
1514 * which will then provide the memory fences.
1515 */
1516# error "memory fences not defined for your architecture, please report"
1517#endif
1518
1519#ifndef ECB_MEMORY_FENCE
1520# define ECB_MEMORY_FENCE do { } while (0)
1521# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1522# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1523#endif
1524
1525#define expect_false(cond) ecb_expect_false (cond)
1526#define expect_true(cond) ecb_expect_true (cond)
1527#define noinline ecb_noinline
1528
469#define inline_size static inline 1529#define inline_size ecb_inline
470 1530
471#if EV_MINIMAL 1531#if EV_FEATURE_CODE
472# define inline_speed static noinline
473#else
474# define inline_speed static inline 1532# define inline_speed ecb_inline
1533#else
1534# define inline_speed noinline static
475#endif 1535#endif
476 1536
477#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1537#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
478 1538
479#if EV_MINPRI == EV_MAXPRI 1539#if EV_MINPRI == EV_MAXPRI
… …
492#define ev_active(w) ((W)(w))->active 1552#define ev_active(w) ((W)(w))->active
493#define ev_at(w) ((WT)(w))->at 1553#define ev_at(w) ((WT)(w))->at
494 1554
495#if EV_USE_REALTIME 1555#if EV_USE_REALTIME
496/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 1556/* sig_atomic_t is used to avoid per-thread variables or locking but still */
497/* giving it a reasonably high chance of working on typical architetcures */ 1557/* giving it a reasonably high chance of working on typical architectures */
498static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 1558static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
499#endif 1559#endif
500 1560
501#if EV_USE_MONOTONIC 1561#if EV_USE_MONOTONIC
502static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 1562static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
… …
504 1564
505#ifndef EV_FD_TO_WIN32_HANDLE 1565#ifndef EV_FD_TO_WIN32_HANDLE
506# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd) 1566# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
507#endif 1567#endif
508#ifndef EV_WIN32_HANDLE_TO_FD 1568#ifndef EV_WIN32_HANDLE_TO_FD
509# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (fd, 0) 1569# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
510#endif 1570#endif
511#ifndef EV_WIN32_CLOSE_FD 1571#ifndef EV_WIN32_CLOSE_FD
512# define EV_WIN32_CLOSE_FD(fd) close (fd) 1572# define EV_WIN32_CLOSE_FD(fd) close (fd)
513#endif 1573#endif
514 1574
… …
516# include "ev_win32.c" 1576# include "ev_win32.c"
517#endif 1577#endif
518 1578
519/*****************************************************************************/ 1579/*****************************************************************************/
520 1580
1581/* define a suitable floor function (only used by periodics atm) */
1582
1583#if EV_USE_FLOOR
1584# include <math.h>
1585# define ev_floor(v) floor (v)
1586#else
1587
1588#include <float.h>
1589
1590/* a floor() replacement function, should be independent of ev_tstamp type */
1591noinline
1592static ev_tstamp
1593ev_floor (ev_tstamp v)
1594{
1595 /* the choice of shift factor is not terribly important */
1596#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1597 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1598#else
1599 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1600#endif
1601
1602 /* argument too large for an unsigned long? */
1603 if (expect_false (v >= shift))
1604 {
1605 ev_tstamp f;
1606
1607 if (v == v - 1.)
1608 return v; /* very large number */
1609
1610 f = shift * ev_floor (v * (1. / shift));
1611 return f + ev_floor (v - f);
1612 }
1613
1614 /* special treatment for negative args? */
1615 if (expect_false (v < 0.))
1616 {
1617 ev_tstamp f = -ev_floor (-v);
1618
1619 return f - (f == v ? 0 : 1);
1620 }
1621
1622 /* fits into an unsigned long */
1623 return (unsigned long)v;
1624}
1625
1626#endif
1627
1628/*****************************************************************************/
1629
1630#ifdef __linux
1631# include <sys/utsname.h>
1632#endif
1633
1634noinline ecb_cold
1635static unsigned int
1636ev_linux_version (void)
1637{
1638#ifdef __linux
1639 unsigned int v = 0;
1640 struct utsname buf;
1641 int i;
1642 char *p = buf.release;
1643
1644 if (uname (&buf))
1645 return 0;
1646
1647 for (i = 3+1; --i; )
1648 {
1649 unsigned int c = 0;
1650
1651 for (;;)
1652 {
1653 if (*p >= '0' && *p <= '9')
1654 c = c * 10 + *p++ - '0';
1655 else
1656 {
1657 p += *p == '.';
1658 break;
1659 }
1660 }
1661
1662 v = (v << 8) | c;
1663 }
1664
1665 return v;
1666#else
1667 return 0;
1668#endif
1669}
1670
1671/*****************************************************************************/
1672
1673#if EV_AVOID_STDIO
1674noinline ecb_cold
1675static void
1676ev_printerr (const char *msg)
1677{
1678 write (STDERR_FILENO, msg, strlen (msg));
1679}
1680#endif
1681
521static void (*syserr_cb)(const char *msg); 1682static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
522 1683
1684ecb_cold
523void 1685void
524ev_set_syserr_cb (void (*cb)(const char *msg)) 1686ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
525{ 1687{
526 syserr_cb = cb; 1688 syserr_cb = cb;
527} 1689}
528 1690
529static void noinline 1691noinline ecb_cold
1692static void
530ev_syserr (const char *msg) 1693ev_syserr (const char *msg)
531{ 1694{
532 if (!msg) 1695 if (!msg)
533 msg = "(libev) system error"; 1696 msg = "(libev) system error";
534 1697
535 if (syserr_cb) 1698 if (syserr_cb)
536 syserr_cb (msg); 1699 syserr_cb (msg);
537 else 1700 else
538 { 1701 {
1702#if EV_AVOID_STDIO
1703 ev_printerr (msg);
1704 ev_printerr (": ");
1705 ev_printerr (strerror (errno));
1706 ev_printerr ("\n");
1707#else
539 perror (msg); 1708 perror (msg);
1709#endif
540 abort (); 1710 abort ();
541 } 1711 }
542} 1712}
543 1713
544static void * 1714static void *
545ev_realloc_emul (void *ptr, long size) 1715ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
546{ 1716{
547 /* some systems, notably openbsd and darwin, fail to properly 1717 /* some systems, notably openbsd and darwin, fail to properly
548 * implement realloc (x, 0) (as required by both ansi c-98 and 1718 * implement realloc (x, 0) (as required by both ansi c-89 and
549 * the single unix specification, so work around them here. 1719 * the single unix specification, so work around them here.
1720 * recently, also (at least) fedora and debian started breaking it,
1721 * despite documenting it otherwise.
550 */ 1722 */
551 1723
552 if (size) 1724 if (size)
553 return realloc (ptr, size); 1725 return realloc (ptr, size);
554 1726
555 free (ptr); 1727 free (ptr);
556 return 0; 1728 return 0;
557} 1729}
558 1730
559static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1731static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
560 1732
1733ecb_cold
561void 1734void
562ev_set_allocator (void *(*cb)(void *ptr, long size)) 1735ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
563{ 1736{
564 alloc = cb; 1737 alloc = cb;
565} 1738}
566 1739
567inline_speed void * 1740inline_speed void *
… …
569{ 1742{
570 ptr = alloc (ptr, size); 1743 ptr = alloc (ptr, size);
571 1744
572 if (!ptr && size) 1745 if (!ptr && size)
573 { 1746 {
1747#if EV_AVOID_STDIO
1748 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1749#else
574 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1750 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1751#endif
575 abort (); 1752 abort ();
576 } 1753 }
577 1754
578 return ptr; 1755 return ptr;
579} 1756}
… …
595 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1772 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
596 unsigned char unused; 1773 unsigned char unused;
597#if EV_USE_EPOLL 1774#if EV_USE_EPOLL
598 unsigned int egen; /* generation counter to counter epoll bugs */ 1775 unsigned int egen; /* generation counter to counter epoll bugs */
599#endif 1776#endif
600#if EV_SELECT_IS_WINSOCKET 1777#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
601 SOCKET handle; 1778 SOCKET handle;
1779#endif
1780#if EV_USE_IOCP
1781 OVERLAPPED or, ow;
602#endif 1782#endif
603} ANFD; 1783} ANFD;
604 1784
605/* stores the pending event set for a given watcher */ 1785/* stores the pending event set for a given watcher */
606typedef struct 1786typedef struct
… …
648 #undef VAR 1828 #undef VAR
649 }; 1829 };
650 #include "ev_wrap.h" 1830 #include "ev_wrap.h"
651 1831
652 static struct ev_loop default_loop_struct; 1832 static struct ev_loop default_loop_struct;
653 struct ev_loop *ev_default_loop_ptr; 1833 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
654 1834
655#else 1835#else
656 1836
657 ev_tstamp ev_rt_now; 1837 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
658 #define VAR(name,decl) static decl; 1838 #define VAR(name,decl) static decl;
659 #include "ev_vars.h" 1839 #include "ev_vars.h"
660 #undef VAR 1840 #undef VAR
661 1841
662 static int ev_default_loop_ptr; 1842 static int ev_default_loop_ptr;
663 1843
664#endif 1844#endif
665 1845
666#if EV_MINIMAL < 2 1846#if EV_FEATURE_API
667# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 1847# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
668# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 1848# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
669# define EV_INVOKE_PENDING invoke_cb (EV_A) 1849# define EV_INVOKE_PENDING invoke_cb (EV_A)
670#else 1850#else
671# define EV_RELEASE_CB (void)0 1851# define EV_RELEASE_CB (void)0
672# define EV_ACQUIRE_CB (void)0 1852# define EV_ACQUIRE_CB (void)0
673# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1853# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
674#endif 1854#endif
675 1855
676#define EVUNLOOP_RECURSE 0x80 1856#define EVBREAK_RECURSE 0x80
677 1857
678/*****************************************************************************/ 1858/*****************************************************************************/
679 1859
680#ifndef EV_HAVE_EV_TIME 1860#ifndef EV_HAVE_EV_TIME
681ev_tstamp 1861ev_tstamp
682ev_time (void) 1862ev_time (void) EV_NOEXCEPT
683{ 1863{
684#if EV_USE_REALTIME 1864#if EV_USE_REALTIME
685 if (expect_true (have_realtime)) 1865 if (expect_true (have_realtime))
686 { 1866 {
687 struct timespec ts; 1867 struct timespec ts;
… …
711 return ev_time (); 1891 return ev_time ();
712} 1892}
713 1893
714#if EV_MULTIPLICITY 1894#if EV_MULTIPLICITY
715ev_tstamp 1895ev_tstamp
716ev_now (EV_P) 1896ev_now (EV_P) EV_NOEXCEPT
717{ 1897{
718 return ev_rt_now; 1898 return ev_rt_now;
719} 1899}
720#endif 1900#endif
721 1901
722void 1902void
723ev_sleep (ev_tstamp delay) 1903ev_sleep (ev_tstamp delay) EV_NOEXCEPT
724{ 1904{
725 if (delay > 0.) 1905 if (delay > 0.)
726 { 1906 {
727#if EV_USE_NANOSLEEP 1907#if EV_USE_NANOSLEEP
728 struct timespec ts; 1908 struct timespec ts;
729 1909
730 ts.tv_sec = (time_t)delay; 1910 EV_TS_SET (ts, delay);
731 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
732
733 nanosleep (&ts, 0); 1911 nanosleep (&ts, 0);
734#elif defined(_WIN32) 1912#elif defined _WIN32
1913 /* maybe this should round up, as ms is very low resolution */
1914 /* compared to select (µs) or nanosleep (ns) */
735 Sleep ((unsigned long)(delay * 1e3)); 1915 Sleep ((unsigned long)(delay * 1e3));
736#else 1916#else
737 struct timeval tv; 1917 struct timeval tv;
738
739 tv.tv_sec = (time_t)delay;
740 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
741 1918
742 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1919 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
743 /* something not guaranteed by newer posix versions, but guaranteed */ 1920 /* something not guaranteed by newer posix versions, but guaranteed */
744 /* by older ones */ 1921 /* by older ones */
1922 EV_TV_SET (tv, delay);
745 select (0, 0, 0, 0, &tv); 1923 select (0, 0, 0, 0, &tv);
746#endif 1924#endif
747 } 1925 }
748} 1926}
749 1927
750/*****************************************************************************/ 1928/*****************************************************************************/
751 1929
752#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1930#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
753 1931
754/* find a suitable new size for the given array, */ 1932/* find a suitable new size for the given array, */
755/* hopefully by rounding to a ncie-to-malloc size */ 1933/* hopefully by rounding to a nice-to-malloc size */
756inline_size int 1934inline_size int
757array_nextsize (int elem, int cur, int cnt) 1935array_nextsize (int elem, int cur, int cnt)
758{ 1936{
759 int ncur = cur + 1; 1937 int ncur = cur + 1;
760 1938
761 do 1939 do
762 ncur <<= 1; 1940 ncur <<= 1;
763 while (cnt > ncur); 1941 while (cnt > ncur);
764 1942
765 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1943 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
766 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1944 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
767 { 1945 {
768 ncur *= elem; 1946 ncur *= elem;
769 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1947 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
770 ncur = ncur - sizeof (void *) * 4; 1948 ncur = ncur - sizeof (void *) * 4;
… …
772 } 1950 }
773 1951
774 return ncur; 1952 return ncur;
775} 1953}
776 1954
777static noinline void * 1955noinline ecb_cold
1956static void *
778array_realloc (int elem, void *base, int *cur, int cnt) 1957array_realloc (int elem, void *base, int *cur, int cnt)
779{ 1958{
780 *cur = array_nextsize (elem, *cur, cnt); 1959 *cur = array_nextsize (elem, *cur, cnt);
781 return ev_realloc (base, elem * *cur); 1960 return ev_realloc (base, elem * *cur);
782} 1961}
… …
785 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1964 memset ((void *)(base), 0, sizeof (*(base)) * (count))
786 1965
787#define array_needsize(type,base,cur,cnt,init) \ 1966#define array_needsize(type,base,cur,cnt,init) \
788 if (expect_false ((cnt) > (cur))) \ 1967 if (expect_false ((cnt) > (cur))) \
789 { \ 1968 { \
790 int ocur_ = (cur); \ 1969 ecb_unused int ocur_ = (cur); \
791 (base) = (type *)array_realloc \ 1970 (base) = (type *)array_realloc \
792 (sizeof (type), (base), &(cur), (cnt)); \ 1971 (sizeof (type), (base), &(cur), (cnt)); \
793 init ((base) + (ocur_), (cur) - ocur_); \ 1972 init ((base) + (ocur_), (cur) - ocur_); \
794 } 1973 }
795 1974
… …
807 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 1986 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
808 1987
809/*****************************************************************************/ 1988/*****************************************************************************/
810 1989
811/* dummy callback for pending events */ 1990/* dummy callback for pending events */
812static void noinline 1991noinline
1992static void
813pendingcb (EV_P_ ev_prepare *w, int revents) 1993pendingcb (EV_P_ ev_prepare *w, int revents)
814{ 1994{
815} 1995}
816 1996
817void noinline 1997noinline
1998void
818ev_feed_event (EV_P_ void *w, int revents) 1999ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
819{ 2000{
820 W w_ = (W)w; 2001 W w_ = (W)w;
821 int pri = ABSPRI (w_); 2002 int pri = ABSPRI (w_);
822 2003
823 if (expect_false (w_->pending)) 2004 if (expect_false (w_->pending))
… …
827 w_->pending = ++pendingcnt [pri]; 2008 w_->pending = ++pendingcnt [pri];
828 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2009 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
829 pendings [pri][w_->pending - 1].w = w_; 2010 pendings [pri][w_->pending - 1].w = w_;
830 pendings [pri][w_->pending - 1].events = revents; 2011 pendings [pri][w_->pending - 1].events = revents;
831 } 2012 }
2013
2014 pendingpri = NUMPRI - 1;
832} 2015}
833 2016
834inline_speed void 2017inline_speed void
835feed_reverse (EV_P_ W w) 2018feed_reverse (EV_P_ W w)
836{ 2019{
… …
856} 2039}
857 2040
858/*****************************************************************************/ 2041/*****************************************************************************/
859 2042
860inline_speed void 2043inline_speed void
861fd_event_nc (EV_P_ int fd, int revents) 2044fd_event_nocheck (EV_P_ int fd, int revents)
862{ 2045{
863 ANFD *anfd = anfds + fd; 2046 ANFD *anfd = anfds + fd;
864 ev_io *w; 2047 ev_io *w;
865 2048
866 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2049 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
878fd_event (EV_P_ int fd, int revents) 2061fd_event (EV_P_ int fd, int revents)
879{ 2062{
880 ANFD *anfd = anfds + fd; 2063 ANFD *anfd = anfds + fd;
881 2064
882 if (expect_true (!anfd->reify)) 2065 if (expect_true (!anfd->reify))
883 fd_event_nc (EV_A_ fd, revents); 2066 fd_event_nocheck (EV_A_ fd, revents);
884} 2067}
885 2068
886void 2069void
887ev_feed_fd_event (EV_P_ int fd, int revents) 2070ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
888{ 2071{
889 if (fd >= 0 && fd < anfdmax) 2072 if (fd >= 0 && fd < anfdmax)
890 fd_event_nc (EV_A_ fd, revents); 2073 fd_event_nocheck (EV_A_ fd, revents);
891} 2074}
892 2075
893/* make sure the external fd watch events are in-sync */ 2076/* make sure the external fd watch events are in-sync */
894/* with the kernel/libev internal state */ 2077/* with the kernel/libev internal state */
895inline_size void 2078inline_size void
896fd_reify (EV_P) 2079fd_reify (EV_P)
897{ 2080{
898 int i; 2081 int i;
899 2082
2083#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
2084 for (i = 0; i < fdchangecnt; ++i)
2085 {
2086 int fd = fdchanges [i];
2087 ANFD *anfd = anfds + fd;
2088
2089 if (anfd->reify & EV__IOFDSET && anfd->head)
2090 {
2091 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
2092
2093 if (handle != anfd->handle)
2094 {
2095 unsigned long arg;
2096
2097 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
2098
2099 /* handle changed, but fd didn't - we need to do it in two steps */
2100 backend_modify (EV_A_ fd, anfd->events, 0);
2101 anfd->events = 0;
2102 anfd->handle = handle;
2103 }
2104 }
2105 }
2106#endif
2107
900 for (i = 0; i < fdchangecnt; ++i) 2108 for (i = 0; i < fdchangecnt; ++i)
901 { 2109 {
902 int fd = fdchanges [i]; 2110 int fd = fdchanges [i];
903 ANFD *anfd = anfds + fd; 2111 ANFD *anfd = anfds + fd;
904 ev_io *w; 2112 ev_io *w;
905 2113
906 unsigned char events = 0; 2114 unsigned char o_events = anfd->events;
2115 unsigned char o_reify = anfd->reify;
907 2116
908 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2117 anfd->reify = 0;
909 events |= (unsigned char)w->events;
910 2118
911#if EV_SELECT_IS_WINSOCKET 2119 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
912 if (events)
913 { 2120 {
914 unsigned long arg; 2121 anfd->events = 0;
915 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 2122
916 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 2123 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
2124 anfd->events |= (unsigned char)w->events;
2125
2126 if (o_events != anfd->events)
2127 o_reify = EV__IOFDSET; /* actually |= */
917 } 2128 }
918#endif
919 2129
920 { 2130 if (o_reify & EV__IOFDSET)
921 unsigned char o_events = anfd->events;
922 unsigned char o_reify = anfd->reify;
923
924 anfd->reify = 0;
925 anfd->events = events;
926
927 if (o_events != events || o_reify & EV__IOFDSET)
928 backend_modify (EV_A_ fd, o_events, events); 2131 backend_modify (EV_A_ fd, o_events, anfd->events);
929 }
930 } 2132 }
931 2133
932 fdchangecnt = 0; 2134 fdchangecnt = 0;
933} 2135}
934 2136
935/* something about the given fd changed */ 2137/* something about the given fd changed */
936inline_size void 2138inline_size
2139void
937fd_change (EV_P_ int fd, int flags) 2140fd_change (EV_P_ int fd, int flags)
938{ 2141{
939 unsigned char reify = anfds [fd].reify; 2142 unsigned char reify = anfds [fd].reify;
940 anfds [fd].reify |= flags; 2143 anfds [fd].reify |= flags;
941 2144
… …
946 fdchanges [fdchangecnt - 1] = fd; 2149 fdchanges [fdchangecnt - 1] = fd;
947 } 2150 }
948} 2151}
949 2152
950/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2153/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
951inline_speed void 2154inline_speed ecb_cold void
952fd_kill (EV_P_ int fd) 2155fd_kill (EV_P_ int fd)
953{ 2156{
954 ev_io *w; 2157 ev_io *w;
955 2158
956 while ((w = (ev_io *)anfds [fd].head)) 2159 while ((w = (ev_io *)anfds [fd].head))
… …
958 ev_io_stop (EV_A_ w); 2161 ev_io_stop (EV_A_ w);
959 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2162 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
960 } 2163 }
961} 2164}
962 2165
963/* check whether the given fd is atcually valid, for error recovery */ 2166/* check whether the given fd is actually valid, for error recovery */
964inline_size int 2167inline_size ecb_cold int
965fd_valid (int fd) 2168fd_valid (int fd)
966{ 2169{
967#ifdef _WIN32 2170#ifdef _WIN32
968 return _get_osfhandle (fd) != -1; 2171 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
969#else 2172#else
970 return fcntl (fd, F_GETFD) != -1; 2173 return fcntl (fd, F_GETFD) != -1;
971#endif 2174#endif
972} 2175}
973 2176
974/* called on EBADF to verify fds */ 2177/* called on EBADF to verify fds */
975static void noinline 2178noinline ecb_cold
2179static void
976fd_ebadf (EV_P) 2180fd_ebadf (EV_P)
977{ 2181{
978 int fd; 2182 int fd;
979 2183
980 for (fd = 0; fd < anfdmax; ++fd) 2184 for (fd = 0; fd < anfdmax; ++fd)
… …
982 if (!fd_valid (fd) && errno == EBADF) 2186 if (!fd_valid (fd) && errno == EBADF)
983 fd_kill (EV_A_ fd); 2187 fd_kill (EV_A_ fd);
984} 2188}
985 2189
986/* called on ENOMEM in select/poll to kill some fds and retry */ 2190/* called on ENOMEM in select/poll to kill some fds and retry */
987static void noinline 2191noinline ecb_cold
2192static void
988fd_enomem (EV_P) 2193fd_enomem (EV_P)
989{ 2194{
990 int fd; 2195 int fd;
991 2196
992 for (fd = anfdmax; fd--; ) 2197 for (fd = anfdmax; fd--; )
… …
996 break; 2201 break;
997 } 2202 }
998} 2203}
999 2204
1000/* usually called after fork if backend needs to re-arm all fds from scratch */ 2205/* usually called after fork if backend needs to re-arm all fds from scratch */
1001static void noinline 2206noinline
2207static void
1002fd_rearm_all (EV_P) 2208fd_rearm_all (EV_P)
1003{ 2209{
1004 int fd; 2210 int fd;
1005 2211
1006 for (fd = 0; fd < anfdmax; ++fd) 2212 for (fd = 0; fd < anfdmax; ++fd)
… …
1010 anfds [fd].emask = 0; 2216 anfds [fd].emask = 0;
1011 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); 2217 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
1012 } 2218 }
1013} 2219}
1014 2220
2221/* used to prepare libev internal fd's */
2222/* this is not fork-safe */
2223inline_speed void
2224fd_intern (int fd)
2225{
2226#ifdef _WIN32
2227 unsigned long arg = 1;
2228 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
2229#else
2230 fcntl (fd, F_SETFD, FD_CLOEXEC);
2231 fcntl (fd, F_SETFL, O_NONBLOCK);
2232#endif
2233}
2234
1015/*****************************************************************************/ 2235/*****************************************************************************/
1016 2236
1017/* 2237/*
1018 * the heap functions want a real array index. array index 0 uis guaranteed to not 2238 * the heap functions want a real array index. array index 0 is guaranteed to not
1019 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 2239 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
1020 * the branching factor of the d-tree. 2240 * the branching factor of the d-tree.
1021 */ 2241 */
1022 2242
1023/* 2243/*
… …
1171 2391
1172static ANSIG signals [EV_NSIG - 1]; 2392static ANSIG signals [EV_NSIG - 1];
1173 2393
1174/*****************************************************************************/ 2394/*****************************************************************************/
1175 2395
1176/* used to prepare libev internal fd's */ 2396#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1177/* this is not fork-safe */ 2397
2398noinline ecb_cold
2399static void
2400evpipe_init (EV_P)
2401{
2402 if (!ev_is_active (&pipe_w))
2403 {
2404 int fds [2];
2405
2406# if EV_USE_EVENTFD
2407 fds [0] = -1;
2408 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
2409 if (fds [1] < 0 && errno == EINVAL)
2410 fds [1] = eventfd (0, 0);
2411
2412 if (fds [1] < 0)
2413# endif
2414 {
2415 while (pipe (fds))
2416 ev_syserr ("(libev) error creating signal/async pipe");
2417
2418 fd_intern (fds [0]);
2419 }
2420
2421 evpipe [0] = fds [0];
2422
2423 if (evpipe [1] < 0)
2424 evpipe [1] = fds [1]; /* first call, set write fd */
2425 else
2426 {
2427 /* on subsequent calls, do not change evpipe [1] */
2428 /* so that evpipe_write can always rely on its value. */
2429 /* this branch does not do anything sensible on windows, */
2430 /* so must not be executed on windows */
2431
2432 dup2 (fds [1], evpipe [1]);
2433 close (fds [1]);
2434 }
2435
2436 fd_intern (evpipe [1]);
2437
2438 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2439 ev_io_start (EV_A_ &pipe_w);
2440 ev_unref (EV_A); /* watcher should not keep loop alive */
2441 }
2442}
2443
1178inline_speed void 2444inline_speed void
1179fd_intern (int fd) 2445evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1180{ 2446{
1181#ifdef _WIN32 2447 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1182 unsigned long arg = 1;
1183 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1184#else
1185 fcntl (fd, F_SETFD, FD_CLOEXEC);
1186 fcntl (fd, F_SETFL, O_NONBLOCK);
1187#endif
1188}
1189 2448
1190static void noinline 2449 if (expect_true (*flag))
1191evpipe_init (EV_P) 2450 return;
1192{ 2451
1193 if (!ev_is_active (&pipe_w)) 2452 *flag = 1;
2453 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2454
2455 pipe_write_skipped = 1;
2456
2457 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2458
2459 if (pipe_write_wanted)
1194 { 2460 {
2461 int old_errno;
2462
2463 pipe_write_skipped = 0;
2464 ECB_MEMORY_FENCE_RELEASE;
2465
2466 old_errno = errno; /* save errno because write will clobber it */
2467
1195#if EV_USE_EVENTFD 2468#if EV_USE_EVENTFD
1196 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2469 if (evpipe [0] < 0)
1197 if (evfd < 0 && errno == EINVAL)
1198 evfd = eventfd (0, 0);
1199
1200 if (evfd >= 0)
1201 { 2470 {
1202 evpipe [0] = -1; 2471 uint64_t counter = 1;
1203 fd_intern (evfd); /* doing it twice doesn't hurt */ 2472 write (evpipe [1], &counter, sizeof (uint64_t));
1204 ev_io_set (&pipe_w, evfd, EV_READ);
1205 } 2473 }
1206 else 2474 else
1207#endif 2475#endif
1208 { 2476 {
1209 while (pipe (evpipe)) 2477#ifdef _WIN32
1210 ev_syserr ("(libev) error creating signal/async pipe"); 2478 WSABUF buf;
1211 2479 DWORD sent;
1212 fd_intern (evpipe [0]); 2480 buf.buf = (char *)&buf;
1213 fd_intern (evpipe [1]); 2481 buf.len = 1;
1214 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2482 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2483#else
2484 write (evpipe [1], &(evpipe [1]), 1);
2485#endif
1215 } 2486 }
1216
1217 ev_io_start (EV_A_ &pipe_w);
1218 ev_unref (EV_A); /* watcher should not keep loop alive */
1219 }
1220}
1221
1222inline_size void
1223evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1224{
1225 if (!*flag)
1226 {
1227 int old_errno = errno; /* save errno because write might clobber it */
1228
1229 *flag = 1;
1230
1231#if EV_USE_EVENTFD
1232 if (evfd >= 0)
1233 {
1234 uint64_t counter = 1;
1235 write (evfd, &counter, sizeof (uint64_t));
1236 }
1237 else
1238#endif
1239 write (evpipe [1], &old_errno, 1);
1240 2487
1241 errno = old_errno; 2488 errno = old_errno;
1242 } 2489 }
1243} 2490}
1244 2491
… …
1247static void 2494static void
1248pipecb (EV_P_ ev_io *iow, int revents) 2495pipecb (EV_P_ ev_io *iow, int revents)
1249{ 2496{
1250 int i; 2497 int i;
1251 2498
2499 if (revents & EV_READ)
2500 {
1252#if EV_USE_EVENTFD 2501#if EV_USE_EVENTFD
1253 if (evfd >= 0) 2502 if (evpipe [0] < 0)
1254 { 2503 {
1255 uint64_t counter; 2504 uint64_t counter;
1256 read (evfd, &counter, sizeof (uint64_t)); 2505 read (evpipe [1], &counter, sizeof (uint64_t));
1257 } 2506 }
1258 else 2507 else
1259#endif 2508#endif
1260 { 2509 {
1261 char dummy; 2510 char dummy[4];
2511#ifdef _WIN32
2512 WSABUF buf;
2513 DWORD recvd;
2514 DWORD flags = 0;
2515 buf.buf = dummy;
2516 buf.len = sizeof (dummy);
2517 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2518#else
1262 read (evpipe [0], &dummy, 1); 2519 read (evpipe [0], &dummy, sizeof (dummy));
2520#endif
2521 }
1263 } 2522 }
1264 2523
2524 pipe_write_skipped = 0;
2525
2526 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2527
2528#if EV_SIGNAL_ENABLE
1265 if (sig_pending) 2529 if (sig_pending)
1266 { 2530 {
1267 sig_pending = 0; 2531 sig_pending = 0;
2532
2533 ECB_MEMORY_FENCE;
1268 2534
1269 for (i = EV_NSIG - 1; i--; ) 2535 for (i = EV_NSIG - 1; i--; )
1270 if (expect_false (signals [i].pending)) 2536 if (expect_false (signals [i].pending))
1271 ev_feed_signal_event (EV_A_ i + 1); 2537 ev_feed_signal_event (EV_A_ i + 1);
1272 } 2538 }
2539#endif
1273 2540
1274#if EV_ASYNC_ENABLE 2541#if EV_ASYNC_ENABLE
1275 if (async_pending) 2542 if (async_pending)
1276 { 2543 {
1277 async_pending = 0; 2544 async_pending = 0;
2545
2546 ECB_MEMORY_FENCE;
1278 2547
1279 for (i = asynccnt; i--; ) 2548 for (i = asynccnt; i--; )
1280 if (asyncs [i]->sent) 2549 if (asyncs [i]->sent)
1281 { 2550 {
1282 asyncs [i]->sent = 0; 2551 asyncs [i]->sent = 0;
2552 ECB_MEMORY_FENCE_RELEASE;
1283 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2553 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1284 } 2554 }
1285 } 2555 }
1286#endif 2556#endif
1287} 2557}
1288 2558
1289/*****************************************************************************/ 2559/*****************************************************************************/
1290 2560
2561void
2562ev_feed_signal (int signum) EV_NOEXCEPT
2563{
2564#if EV_MULTIPLICITY
2565 EV_P;
2566 ECB_MEMORY_FENCE_ACQUIRE;
2567 EV_A = signals [signum - 1].loop;
2568
2569 if (!EV_A)
2570 return;
2571#endif
2572
2573 signals [signum - 1].pending = 1;
2574 evpipe_write (EV_A_ &sig_pending);
2575}
2576
1291static void 2577static void
1292ev_sighandler (int signum) 2578ev_sighandler (int signum)
1293{ 2579{
1294#if EV_MULTIPLICITY
1295 EV_P = signals [signum - 1].loop;
1296#endif
1297
1298#if _WIN32 2580#ifdef _WIN32
1299 signal (signum, ev_sighandler); 2581 signal (signum, ev_sighandler);
1300#endif 2582#endif
1301 2583
1302 signals [signum - 1].pending = 1; 2584 ev_feed_signal (signum);
1303 evpipe_write (EV_A_ &sig_pending);
1304} 2585}
1305 2586
1306void noinline 2587noinline
2588void
1307ev_feed_signal_event (EV_P_ int signum) 2589ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
1308{ 2590{
1309 WL w; 2591 WL w;
1310 2592
1311 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2593 if (expect_false (signum <= 0 || signum >= EV_NSIG))
1312 return; 2594 return;
1313 2595
1314 --signum; 2596 --signum;
1315 2597
1316#if EV_MULTIPLICITY 2598#if EV_MULTIPLICITY
… …
1320 if (expect_false (signals [signum].loop != EV_A)) 2602 if (expect_false (signals [signum].loop != EV_A))
1321 return; 2603 return;
1322#endif 2604#endif
1323 2605
1324 signals [signum].pending = 0; 2606 signals [signum].pending = 0;
2607 ECB_MEMORY_FENCE_RELEASE;
1325 2608
1326 for (w = signals [signum].head; w; w = w->next) 2609 for (w = signals [signum].head; w; w = w->next)
1327 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2610 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1328} 2611}
1329 2612
… …
1345 break; 2628 break;
1346 } 2629 }
1347} 2630}
1348#endif 2631#endif
1349 2632
2633#endif
2634
1350/*****************************************************************************/ 2635/*****************************************************************************/
1351 2636
2637#if EV_CHILD_ENABLE
1352static WL childs [EV_PID_HASHSIZE]; 2638static WL childs [EV_PID_HASHSIZE];
1353
1354#ifndef _WIN32
1355 2639
1356static ev_signal childev; 2640static ev_signal childev;
1357 2641
1358#ifndef WIFCONTINUED 2642#ifndef WIFCONTINUED
1359# define WIFCONTINUED(status) 0 2643# define WIFCONTINUED(status) 0
… …
1364child_reap (EV_P_ int chain, int pid, int status) 2648child_reap (EV_P_ int chain, int pid, int status)
1365{ 2649{
1366 ev_child *w; 2650 ev_child *w;
1367 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2651 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1368 2652
1369 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2653 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1370 { 2654 {
1371 if ((w->pid == pid || !w->pid) 2655 if ((w->pid == pid || !w->pid)
1372 && (!traced || (w->flags & 1))) 2656 && (!traced || (w->flags & 1)))
1373 { 2657 {
1374 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2658 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1399 /* make sure we are called again until all children have been reaped */ 2683 /* make sure we are called again until all children have been reaped */
1400 /* we need to do it this way so that the callback gets called before we continue */ 2684 /* we need to do it this way so that the callback gets called before we continue */
1401 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2685 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1402 2686
1403 child_reap (EV_A_ pid, pid, status); 2687 child_reap (EV_A_ pid, pid, status);
1404 if (EV_PID_HASHSIZE > 1) 2688 if ((EV_PID_HASHSIZE) > 1)
1405 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2689 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1406} 2690}
1407 2691
1408#endif 2692#endif
1409 2693
1410/*****************************************************************************/ 2694/*****************************************************************************/
1411 2695
2696#if EV_USE_IOCP
2697# include "ev_iocp.c"
2698#endif
1412#if EV_USE_PORT 2699#if EV_USE_PORT
1413# include "ev_port.c" 2700# include "ev_port.c"
1414#endif 2701#endif
1415#if EV_USE_KQUEUE 2702#if EV_USE_KQUEUE
1416# include "ev_kqueue.c" 2703# include "ev_kqueue.c"
… …
1423#endif 2710#endif
1424#if EV_USE_SELECT 2711#if EV_USE_SELECT
1425# include "ev_select.c" 2712# include "ev_select.c"
1426#endif 2713#endif
1427 2714
1428int 2715ecb_cold int
1429ev_version_major (void) 2716ev_version_major (void) EV_NOEXCEPT
1430{ 2717{
1431 return EV_VERSION_MAJOR; 2718 return EV_VERSION_MAJOR;
1432} 2719}
1433 2720
1434int 2721ecb_cold int
1435ev_version_minor (void) 2722ev_version_minor (void) EV_NOEXCEPT
1436{ 2723{
1437 return EV_VERSION_MINOR; 2724 return EV_VERSION_MINOR;
1438} 2725}
1439 2726
1440/* return true if we are running with elevated privileges and should ignore env variables */ 2727/* return true if we are running with elevated privileges and should ignore env variables */
1441int inline_size 2728inline_size ecb_cold int
1442enable_secure (void) 2729enable_secure (void)
1443{ 2730{
1444#ifdef _WIN32 2731#ifdef _WIN32
1445 return 0; 2732 return 0;
1446#else 2733#else
1447 return getuid () != geteuid () 2734 return getuid () != geteuid ()
1448 || getgid () != getegid (); 2735 || getgid () != getegid ();
1449#endif 2736#endif
1450} 2737}
1451 2738
2739ecb_cold
1452unsigned int 2740unsigned int
1453ev_supported_backends (void) 2741ev_supported_backends (void) EV_NOEXCEPT
1454{ 2742{
1455 unsigned int flags = 0; 2743 unsigned int flags = 0;
1456 2744
1457 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2745 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1458 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2746 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1461 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2749 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1462 2750
1463 return flags; 2751 return flags;
1464} 2752}
1465 2753
2754ecb_cold
1466unsigned int 2755unsigned int
1467ev_recommended_backends (void) 2756ev_recommended_backends (void) EV_NOEXCEPT
1468{ 2757{
1469 unsigned int flags = ev_supported_backends (); 2758 unsigned int flags = ev_supported_backends ();
1470 2759
1471#ifndef __NetBSD__ 2760#ifndef __NetBSD__
1472 /* kqueue is borked on everything but netbsd apparently */ 2761 /* kqueue is borked on everything but netbsd apparently */
… …
1476#ifdef __APPLE__ 2765#ifdef __APPLE__
1477 /* only select works correctly on that "unix-certified" platform */ 2766 /* only select works correctly on that "unix-certified" platform */
1478 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2767 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1479 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 2768 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1480#endif 2769#endif
2770#ifdef __FreeBSD__
2771 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2772#endif
1481 2773
1482 return flags; 2774 return flags;
1483} 2775}
1484 2776
2777ecb_cold
1485unsigned int 2778unsigned int
1486ev_embeddable_backends (void) 2779ev_embeddable_backends (void) EV_NOEXCEPT
1487{ 2780{
1488 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2781 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1489 2782
1490 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2783 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1491 /* please fix it and tell me how to detect the fix */ 2784 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1492 flags &= ~EVBACKEND_EPOLL; 2785 flags &= ~EVBACKEND_EPOLL;
1493 2786
1494 return flags; 2787 return flags;
1495} 2788}
1496 2789
1497unsigned int 2790unsigned int
1498ev_backend (EV_P) 2791ev_backend (EV_P) EV_NOEXCEPT
1499{ 2792{
1500 return backend; 2793 return backend;
1501} 2794}
1502 2795
1503#if EV_MINIMAL < 2 2796#if EV_FEATURE_API
1504unsigned int 2797unsigned int
1505ev_loop_count (EV_P) 2798ev_iteration (EV_P) EV_NOEXCEPT
1506{ 2799{
1507 return loop_count; 2800 return loop_count;
1508} 2801}
1509 2802
1510unsigned int 2803unsigned int
1511ev_loop_depth (EV_P) 2804ev_depth (EV_P) EV_NOEXCEPT
1512{ 2805{
1513 return loop_depth; 2806 return loop_depth;
1514} 2807}
1515 2808
1516void 2809void
1517ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2810ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1518{ 2811{
1519 io_blocktime = interval; 2812 io_blocktime = interval;
1520} 2813}
1521 2814
1522void 2815void
1523ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2816ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1524{ 2817{
1525 timeout_blocktime = interval; 2818 timeout_blocktime = interval;
1526} 2819}
1527 2820
1528void 2821void
1529ev_set_userdata (EV_P_ void *data) 2822ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
1530{ 2823{
1531 userdata = data; 2824 userdata = data;
1532} 2825}
1533 2826
1534void * 2827void *
1535ev_userdata (EV_P) 2828ev_userdata (EV_P) EV_NOEXCEPT
1536{ 2829{
1537 return userdata; 2830 return userdata;
1538} 2831}
1539 2832
2833void
1540void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2834ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
1541{ 2835{
1542 invoke_cb = invoke_pending_cb; 2836 invoke_cb = invoke_pending_cb;
1543} 2837}
1544 2838
2839void
1545void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2840ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
1546{ 2841{
1547 release_cb = release; 2842 release_cb = release;
1548 acquire_cb = acquire; 2843 acquire_cb = acquire;
1549} 2844}
1550#endif 2845#endif
1551 2846
1552/* initialise a loop structure, must be zero-initialised */ 2847/* initialise a loop structure, must be zero-initialised */
1553static void noinline 2848noinline ecb_cold
2849static void
1554loop_init (EV_P_ unsigned int flags) 2850loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
1555{ 2851{
1556 if (!backend) 2852 if (!backend)
1557 { 2853 {
2854 origflags = flags;
2855
1558#if EV_USE_REALTIME 2856#if EV_USE_REALTIME
1559 if (!have_realtime) 2857 if (!have_realtime)
1560 { 2858 {
1561 struct timespec ts; 2859 struct timespec ts;
1562 2860
… …
1584 if (!(flags & EVFLAG_NOENV) 2882 if (!(flags & EVFLAG_NOENV)
1585 && !enable_secure () 2883 && !enable_secure ()
1586 && getenv ("LIBEV_FLAGS")) 2884 && getenv ("LIBEV_FLAGS"))
1587 flags = atoi (getenv ("LIBEV_FLAGS")); 2885 flags = atoi (getenv ("LIBEV_FLAGS"));
1588 2886
1589 ev_rt_now = ev_time (); 2887 ev_rt_now = ev_time ();
1590 mn_now = get_clock (); 2888 mn_now = get_clock ();
1591 now_floor = mn_now; 2889 now_floor = mn_now;
1592 rtmn_diff = ev_rt_now - mn_now; 2890 rtmn_diff = ev_rt_now - mn_now;
1593#if EV_MINIMAL < 2 2891#if EV_FEATURE_API
1594 invoke_cb = ev_invoke_pending; 2892 invoke_cb = ev_invoke_pending;
1595#endif 2893#endif
1596 2894
1597 io_blocktime = 0.; 2895 io_blocktime = 0.;
1598 timeout_blocktime = 0.; 2896 timeout_blocktime = 0.;
1599 backend = 0; 2897 backend = 0;
1600 backend_fd = -1; 2898 backend_fd = -1;
1601 sig_pending = 0; 2899 sig_pending = 0;
1602#if EV_ASYNC_ENABLE 2900#if EV_ASYNC_ENABLE
1603 async_pending = 0; 2901 async_pending = 0;
1604#endif 2902#endif
2903 pipe_write_skipped = 0;
2904 pipe_write_wanted = 0;
2905 evpipe [0] = -1;
2906 evpipe [1] = -1;
1605#if EV_USE_INOTIFY 2907#if EV_USE_INOTIFY
1606 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2908 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1607#endif 2909#endif
1608#if EV_USE_SIGNALFD 2910#if EV_USE_SIGNALFD
1609 sigfd = flags & EVFLAG_NOSIGFD ? -1 : -2; 2911 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1610#endif 2912#endif
1611 2913
1612 if (!(flags & 0x0000ffffU)) 2914 if (!(flags & EVBACKEND_MASK))
1613 flags |= ev_recommended_backends (); 2915 flags |= ev_recommended_backends ();
1614 2916
2917#if EV_USE_IOCP
2918 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2919#endif
1615#if EV_USE_PORT 2920#if EV_USE_PORT
1616 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2921 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1617#endif 2922#endif
1618#if EV_USE_KQUEUE 2923#if EV_USE_KQUEUE
1619 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2924 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1628 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2933 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1629#endif 2934#endif
1630 2935
1631 ev_prepare_init (&pending_w, pendingcb); 2936 ev_prepare_init (&pending_w, pendingcb);
1632 2937
2938#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1633 ev_init (&pipe_w, pipecb); 2939 ev_init (&pipe_w, pipecb);
1634 ev_set_priority (&pipe_w, EV_MAXPRI); 2940 ev_set_priority (&pipe_w, EV_MAXPRI);
2941#endif
1635 } 2942 }
1636} 2943}
1637 2944
1638/* free up a loop structure */ 2945/* free up a loop structure */
1639static void noinline 2946ecb_cold
2947void
1640loop_destroy (EV_P) 2948ev_loop_destroy (EV_P)
1641{ 2949{
1642 int i; 2950 int i;
2951
2952#if EV_MULTIPLICITY
2953 /* mimic free (0) */
2954 if (!EV_A)
2955 return;
2956#endif
2957
2958#if EV_CLEANUP_ENABLE
2959 /* queue cleanup watchers (and execute them) */
2960 if (expect_false (cleanupcnt))
2961 {
2962 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2963 EV_INVOKE_PENDING;
2964 }
2965#endif
2966
2967#if EV_CHILD_ENABLE
2968 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2969 {
2970 ev_ref (EV_A); /* child watcher */
2971 ev_signal_stop (EV_A_ &childev);
2972 }
2973#endif
1643 2974
1644 if (ev_is_active (&pipe_w)) 2975 if (ev_is_active (&pipe_w))
1645 { 2976 {
1646 /*ev_ref (EV_A);*/ 2977 /*ev_ref (EV_A);*/
1647 /*ev_io_stop (EV_A_ &pipe_w);*/ 2978 /*ev_io_stop (EV_A_ &pipe_w);*/
1648 2979
1649#if EV_USE_EVENTFD
1650 if (evfd >= 0)
1651 close (evfd);
1652#endif
1653
1654 if (evpipe [0] >= 0)
1655 {
1656 EV_WIN32_CLOSE_FD (evpipe [0]); 2980 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1657 EV_WIN32_CLOSE_FD (evpipe [1]); 2981 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1658 }
1659 } 2982 }
1660 2983
1661#if EV_USE_SIGNALFD 2984#if EV_USE_SIGNALFD
1662 if (ev_is_active (&sigfd_w)) 2985 if (ev_is_active (&sigfd_w))
1663 {
1664 /*ev_ref (EV_A);*/
1665 /*ev_io_stop (EV_A_ &sigfd_w);*/
1666
1667 close (sigfd); 2986 close (sigfd);
1668 }
1669#endif 2987#endif
1670 2988
1671#if EV_USE_INOTIFY 2989#if EV_USE_INOTIFY
1672 if (fs_fd >= 0) 2990 if (fs_fd >= 0)
1673 close (fs_fd); 2991 close (fs_fd);
1674#endif 2992#endif
1675 2993
1676 if (backend_fd >= 0) 2994 if (backend_fd >= 0)
1677 close (backend_fd); 2995 close (backend_fd);
1678 2996
2997#if EV_USE_IOCP
2998 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2999#endif
1679#if EV_USE_PORT 3000#if EV_USE_PORT
1680 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3001 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1681#endif 3002#endif
1682#if EV_USE_KQUEUE 3003#if EV_USE_KQUEUE
1683 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3004 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1710 array_free (periodic, EMPTY); 3031 array_free (periodic, EMPTY);
1711#endif 3032#endif
1712#if EV_FORK_ENABLE 3033#if EV_FORK_ENABLE
1713 array_free (fork, EMPTY); 3034 array_free (fork, EMPTY);
1714#endif 3035#endif
3036#if EV_CLEANUP_ENABLE
3037 array_free (cleanup, EMPTY);
3038#endif
1715 array_free (prepare, EMPTY); 3039 array_free (prepare, EMPTY);
1716 array_free (check, EMPTY); 3040 array_free (check, EMPTY);
1717#if EV_ASYNC_ENABLE 3041#if EV_ASYNC_ENABLE
1718 array_free (async, EMPTY); 3042 array_free (async, EMPTY);
1719#endif 3043#endif
1720 3044
1721 backend = 0; 3045 backend = 0;
3046
3047#if EV_MULTIPLICITY
3048 if (ev_is_default_loop (EV_A))
3049#endif
3050 ev_default_loop_ptr = 0;
3051#if EV_MULTIPLICITY
3052 else
3053 ev_free (EV_A);
3054#endif
1722} 3055}
1723 3056
1724#if EV_USE_INOTIFY 3057#if EV_USE_INOTIFY
1725inline_size void infy_fork (EV_P); 3058inline_size void infy_fork (EV_P);
1726#endif 3059#endif
… …
1739#endif 3072#endif
1740#if EV_USE_INOTIFY 3073#if EV_USE_INOTIFY
1741 infy_fork (EV_A); 3074 infy_fork (EV_A);
1742#endif 3075#endif
1743 3076
3077#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1744 if (ev_is_active (&pipe_w)) 3078 if (ev_is_active (&pipe_w) && postfork != 2)
1745 { 3079 {
1746 /* this "locks" the handlers against writing to the pipe */ 3080 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1747 /* while we modify the fd vars */
1748 sig_pending = 1;
1749#if EV_ASYNC_ENABLE
1750 async_pending = 1;
1751#endif
1752 3081
1753 ev_ref (EV_A); 3082 ev_ref (EV_A);
1754 ev_io_stop (EV_A_ &pipe_w); 3083 ev_io_stop (EV_A_ &pipe_w);
1755 3084
1756#if EV_USE_EVENTFD
1757 if (evfd >= 0)
1758 close (evfd);
1759#endif
1760
1761 if (evpipe [0] >= 0) 3085 if (evpipe [0] >= 0)
1762 {
1763 EV_WIN32_CLOSE_FD (evpipe [0]); 3086 EV_WIN32_CLOSE_FD (evpipe [0]);
1764 EV_WIN32_CLOSE_FD (evpipe [1]);
1765 }
1766 3087
1767 evpipe_init (EV_A); 3088 evpipe_init (EV_A);
1768 /* now iterate over everything, in case we missed something */ 3089 /* iterate over everything, in case we missed something before */
1769 pipecb (EV_A_ &pipe_w, EV_READ); 3090 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1770 } 3091 }
3092#endif
1771 3093
1772 postfork = 0; 3094 postfork = 0;
1773} 3095}
1774 3096
1775#if EV_MULTIPLICITY 3097#if EV_MULTIPLICITY
1776 3098
3099ecb_cold
1777struct ev_loop * 3100struct ev_loop *
1778ev_loop_new (unsigned int flags) 3101ev_loop_new (unsigned int flags) EV_NOEXCEPT
1779{ 3102{
1780 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3103 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1781 3104
1782 memset (EV_A, 0, sizeof (struct ev_loop)); 3105 memset (EV_A, 0, sizeof (struct ev_loop));
1783 loop_init (EV_A_ flags); 3106 loop_init (EV_A_ flags);
1784 3107
1785 if (ev_backend (EV_A)) 3108 if (ev_backend (EV_A))
1786 return EV_A; 3109 return EV_A;
1787 3110
3111 ev_free (EV_A);
1788 return 0; 3112 return 0;
1789} 3113}
1790 3114
1791void
1792ev_loop_destroy (EV_P)
1793{
1794 loop_destroy (EV_A);
1795 ev_free (loop);
1796}
1797
1798void
1799ev_loop_fork (EV_P)
1800{
1801 postfork = 1; /* must be in line with ev_default_fork */
1802}
1803#endif /* multiplicity */ 3115#endif /* multiplicity */
1804 3116
1805#if EV_VERIFY 3117#if EV_VERIFY
1806static void noinline 3118noinline ecb_cold
3119static void
1807verify_watcher (EV_P_ W w) 3120verify_watcher (EV_P_ W w)
1808{ 3121{
1809 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3122 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1810 3123
1811 if (w->pending) 3124 if (w->pending)
1812 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3125 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1813} 3126}
1814 3127
1815static void noinline 3128noinline ecb_cold
3129static void
1816verify_heap (EV_P_ ANHE *heap, int N) 3130verify_heap (EV_P_ ANHE *heap, int N)
1817{ 3131{
1818 int i; 3132 int i;
1819 3133
1820 for (i = HEAP0; i < N + HEAP0; ++i) 3134 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1825 3139
1826 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3140 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1827 } 3141 }
1828} 3142}
1829 3143
1830static void noinline 3144noinline ecb_cold
3145static void
1831array_verify (EV_P_ W *ws, int cnt) 3146array_verify (EV_P_ W *ws, int cnt)
1832{ 3147{
1833 while (cnt--) 3148 while (cnt--)
1834 { 3149 {
1835 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3150 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1836 verify_watcher (EV_A_ ws [cnt]); 3151 verify_watcher (EV_A_ ws [cnt]);
1837 } 3152 }
1838} 3153}
1839#endif 3154#endif
1840 3155
1841#if EV_MINIMAL < 2 3156#if EV_FEATURE_API
1842void 3157void ecb_cold
1843ev_loop_verify (EV_P) 3158ev_verify (EV_P) EV_NOEXCEPT
1844{ 3159{
1845#if EV_VERIFY 3160#if EV_VERIFY
1846 int i; 3161 int i;
1847 WL w; 3162 WL w, w2;
1848 3163
1849 assert (activecnt >= -1); 3164 assert (activecnt >= -1);
1850 3165
1851 assert (fdchangemax >= fdchangecnt); 3166 assert (fdchangemax >= fdchangecnt);
1852 for (i = 0; i < fdchangecnt; ++i) 3167 for (i = 0; i < fdchangecnt; ++i)
1853 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3168 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1854 3169
1855 assert (anfdmax >= 0); 3170 assert (anfdmax >= 0);
1856 for (i = 0; i < anfdmax; ++i) 3171 for (i = 0; i < anfdmax; ++i)
3172 {
3173 int j = 0;
3174
1857 for (w = anfds [i].head; w; w = w->next) 3175 for (w = w2 = anfds [i].head; w; w = w->next)
1858 { 3176 {
1859 verify_watcher (EV_A_ (W)w); 3177 verify_watcher (EV_A_ (W)w);
3178
3179 if (j++ & 1)
3180 {
3181 assert (("libev: io watcher list contains a loop", w != w2));
3182 w2 = w2->next;
3183 }
3184
1860 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3185 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1861 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 3186 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1862 } 3187 }
3188 }
1863 3189
1864 assert (timermax >= timercnt); 3190 assert (timermax >= timercnt);
1865 verify_heap (EV_A_ timers, timercnt); 3191 verify_heap (EV_A_ timers, timercnt);
1866 3192
1867#if EV_PERIODIC_ENABLE 3193#if EV_PERIODIC_ENABLE
… …
1882#if EV_FORK_ENABLE 3208#if EV_FORK_ENABLE
1883 assert (forkmax >= forkcnt); 3209 assert (forkmax >= forkcnt);
1884 array_verify (EV_A_ (W *)forks, forkcnt); 3210 array_verify (EV_A_ (W *)forks, forkcnt);
1885#endif 3211#endif
1886 3212
3213#if EV_CLEANUP_ENABLE
3214 assert (cleanupmax >= cleanupcnt);
3215 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
3216#endif
3217
1887#if EV_ASYNC_ENABLE 3218#if EV_ASYNC_ENABLE
1888 assert (asyncmax >= asynccnt); 3219 assert (asyncmax >= asynccnt);
1889 array_verify (EV_A_ (W *)asyncs, asynccnt); 3220 array_verify (EV_A_ (W *)asyncs, asynccnt);
1890#endif 3221#endif
1891 3222
3223#if EV_PREPARE_ENABLE
1892 assert (preparemax >= preparecnt); 3224 assert (preparemax >= preparecnt);
1893 array_verify (EV_A_ (W *)prepares, preparecnt); 3225 array_verify (EV_A_ (W *)prepares, preparecnt);
3226#endif
1894 3227
3228#if EV_CHECK_ENABLE
1895 assert (checkmax >= checkcnt); 3229 assert (checkmax >= checkcnt);
1896 array_verify (EV_A_ (W *)checks, checkcnt); 3230 array_verify (EV_A_ (W *)checks, checkcnt);
3231#endif
1897 3232
1898# if 0 3233# if 0
3234#if EV_CHILD_ENABLE
1899 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 3235 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1900 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending) 3236 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
3237#endif
1901# endif 3238# endif
1902#endif 3239#endif
1903} 3240}
1904#endif 3241#endif
1905 3242
1906#if EV_MULTIPLICITY 3243#if EV_MULTIPLICITY
3244ecb_cold
1907struct ev_loop * 3245struct ev_loop *
1908ev_default_loop_init (unsigned int flags)
1909#else 3246#else
1910int 3247int
3248#endif
1911ev_default_loop (unsigned int flags) 3249ev_default_loop (unsigned int flags) EV_NOEXCEPT
1912#endif
1913{ 3250{
1914 if (!ev_default_loop_ptr) 3251 if (!ev_default_loop_ptr)
1915 { 3252 {
1916#if EV_MULTIPLICITY 3253#if EV_MULTIPLICITY
1917 EV_P = ev_default_loop_ptr = &default_loop_struct; 3254 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1921 3258
1922 loop_init (EV_A_ flags); 3259 loop_init (EV_A_ flags);
1923 3260
1924 if (ev_backend (EV_A)) 3261 if (ev_backend (EV_A))
1925 { 3262 {
1926#ifndef _WIN32 3263#if EV_CHILD_ENABLE
1927 ev_signal_init (&childev, childcb, SIGCHLD); 3264 ev_signal_init (&childev, childcb, SIGCHLD);
1928 ev_set_priority (&childev, EV_MAXPRI); 3265 ev_set_priority (&childev, EV_MAXPRI);
1929 ev_signal_start (EV_A_ &childev); 3266 ev_signal_start (EV_A_ &childev);
1930 ev_unref (EV_A); /* child watcher should not keep loop alive */ 3267 ev_unref (EV_A); /* child watcher should not keep loop alive */
1931#endif 3268#endif
… …
1936 3273
1937 return ev_default_loop_ptr; 3274 return ev_default_loop_ptr;
1938} 3275}
1939 3276
1940void 3277void
1941ev_default_destroy (void) 3278ev_loop_fork (EV_P) EV_NOEXCEPT
1942{ 3279{
1943#if EV_MULTIPLICITY 3280 postfork = 1;
1944 EV_P = ev_default_loop_ptr;
1945#endif
1946
1947 ev_default_loop_ptr = 0;
1948
1949#ifndef _WIN32
1950 ev_ref (EV_A); /* child watcher */
1951 ev_signal_stop (EV_A_ &childev);
1952#endif
1953
1954 loop_destroy (EV_A);
1955}
1956
1957void
1958ev_default_fork (void)
1959{
1960#if EV_MULTIPLICITY
1961 EV_P = ev_default_loop_ptr;
1962#endif
1963
1964 postfork = 1; /* must be in line with ev_loop_fork */
1965} 3281}
1966 3282
1967/*****************************************************************************/ 3283/*****************************************************************************/
1968 3284
1969void 3285void
… …
1971{ 3287{
1972 EV_CB_INVOKE ((W)w, revents); 3288 EV_CB_INVOKE ((W)w, revents);
1973} 3289}
1974 3290
1975unsigned int 3291unsigned int
1976ev_pending_count (EV_P) 3292ev_pending_count (EV_P) EV_NOEXCEPT
1977{ 3293{
1978 int pri; 3294 int pri;
1979 unsigned int count = 0; 3295 unsigned int count = 0;
1980 3296
1981 for (pri = NUMPRI; pri--; ) 3297 for (pri = NUMPRI; pri--; )
1982 count += pendingcnt [pri]; 3298 count += pendingcnt [pri];
1983 3299
1984 return count; 3300 return count;
1985} 3301}
1986 3302
1987void noinline 3303noinline
3304void
1988ev_invoke_pending (EV_P) 3305ev_invoke_pending (EV_P)
1989{ 3306{
1990 int pri; 3307 pendingpri = NUMPRI;
1991 3308
1992 for (pri = NUMPRI; pri--; ) 3309 do
3310 {
3311 --pendingpri;
3312
3313 /* pendingpri possibly gets modified in the inner loop */
1993 while (pendingcnt [pri]) 3314 while (pendingcnt [pendingpri])
1994 { 3315 {
1995 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3316 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
1996 3317
1997 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1998 /* ^ this is no longer true, as pending_w could be here */
1999
2000 p->w->pending = 0; 3318 p->w->pending = 0;
2001 EV_CB_INVOKE (p->w, p->events); 3319 EV_CB_INVOKE (p->w, p->events);
2002 EV_FREQUENT_CHECK; 3320 EV_FREQUENT_CHECK;
2003 } 3321 }
3322 }
3323 while (pendingpri);
2004} 3324}
2005 3325
2006#if EV_IDLE_ENABLE 3326#if EV_IDLE_ENABLE
2007/* make idle watchers pending. this handles the "call-idle */ 3327/* make idle watchers pending. this handles the "call-idle */
2008/* only when higher priorities are idle" logic */ 3328/* only when higher priorities are idle" logic */
… …
2060 EV_FREQUENT_CHECK; 3380 EV_FREQUENT_CHECK;
2061 feed_reverse (EV_A_ (W)w); 3381 feed_reverse (EV_A_ (W)w);
2062 } 3382 }
2063 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 3383 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
2064 3384
2065 feed_reverse_done (EV_A_ EV_TIMEOUT); 3385 feed_reverse_done (EV_A_ EV_TIMER);
2066 } 3386 }
2067} 3387}
2068 3388
2069#if EV_PERIODIC_ENABLE 3389#if EV_PERIODIC_ENABLE
3390
3391noinline
3392static void
3393periodic_recalc (EV_P_ ev_periodic *w)
3394{
3395 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3396 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3397
3398 /* the above almost always errs on the low side */
3399 while (at <= ev_rt_now)
3400 {
3401 ev_tstamp nat = at + w->interval;
3402
3403 /* when resolution fails us, we use ev_rt_now */
3404 if (expect_false (nat == at))
3405 {
3406 at = ev_rt_now;
3407 break;
3408 }
3409
3410 at = nat;
3411 }
3412
3413 ev_at (w) = at;
3414}
3415
2070/* make periodics pending */ 3416/* make periodics pending */
2071inline_size void 3417inline_size void
2072periodics_reify (EV_P) 3418periodics_reify (EV_P)
2073{ 3419{
2074 EV_FREQUENT_CHECK; 3420 EV_FREQUENT_CHECK;
2075 3421
2076 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3422 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2077 { 3423 {
2078 int feed_count = 0;
2079
2080 do 3424 do
2081 { 3425 {
2082 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3426 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2083 3427
2084 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3428 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2093 ANHE_at_cache (periodics [HEAP0]); 3437 ANHE_at_cache (periodics [HEAP0]);
2094 downheap (periodics, periodiccnt, HEAP0); 3438 downheap (periodics, periodiccnt, HEAP0);
2095 } 3439 }
2096 else if (w->interval) 3440 else if (w->interval)
2097 { 3441 {
2098 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3442 periodic_recalc (EV_A_ w);
2099 /* if next trigger time is not sufficiently in the future, put it there */
2100 /* this might happen because of floating point inexactness */
2101 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2102 {
2103 ev_at (w) += w->interval;
2104
2105 /* if interval is unreasonably low we might still have a time in the past */
2106 /* so correct this. this will make the periodic very inexact, but the user */
2107 /* has effectively asked to get triggered more often than possible */
2108 if (ev_at (w) < ev_rt_now)
2109 ev_at (w) = ev_rt_now;
2110 }
2111
2112 ANHE_at_cache (periodics [HEAP0]); 3443 ANHE_at_cache (periodics [HEAP0]);
2113 downheap (periodics, periodiccnt, HEAP0); 3444 downheap (periodics, periodiccnt, HEAP0);
2114 } 3445 }
2115 else 3446 else
2116 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3447 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2123 feed_reverse_done (EV_A_ EV_PERIODIC); 3454 feed_reverse_done (EV_A_ EV_PERIODIC);
2124 } 3455 }
2125} 3456}
2126 3457
2127/* simply recalculate all periodics */ 3458/* simply recalculate all periodics */
2128/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 3459/* TODO: maybe ensure that at least one event happens when jumping forward? */
2129static void noinline 3460noinline ecb_cold
3461static void
2130periodics_reschedule (EV_P) 3462periodics_reschedule (EV_P)
2131{ 3463{
2132 int i; 3464 int i;
2133 3465
2134 /* adjust periodics after time jump */ 3466 /* adjust periodics after time jump */
… …
2137 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3469 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2138 3470
2139 if (w->reschedule_cb) 3471 if (w->reschedule_cb)
2140 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3472 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2141 else if (w->interval) 3473 else if (w->interval)
2142 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3474 periodic_recalc (EV_A_ w);
2143 3475
2144 ANHE_at_cache (periodics [i]); 3476 ANHE_at_cache (periodics [i]);
2145 } 3477 }
2146 3478
2147 reheap (periodics, periodiccnt); 3479 reheap (periodics, periodiccnt);
2148} 3480}
2149#endif 3481#endif
2150 3482
2151/* adjust all timers by a given offset */ 3483/* adjust all timers by a given offset */
2152static void noinline 3484noinline ecb_cold
3485static void
2153timers_reschedule (EV_P_ ev_tstamp adjust) 3486timers_reschedule (EV_P_ ev_tstamp adjust)
2154{ 3487{
2155 int i; 3488 int i;
2156 3489
2157 for (i = 0; i < timercnt; ++i) 3490 for (i = 0; i < timercnt; ++i)
… …
2161 ANHE_at_cache (*he); 3494 ANHE_at_cache (*he);
2162 } 3495 }
2163} 3496}
2164 3497
2165/* fetch new monotonic and realtime times from the kernel */ 3498/* fetch new monotonic and realtime times from the kernel */
2166/* also detetc if there was a timejump, and act accordingly */ 3499/* also detect if there was a timejump, and act accordingly */
2167inline_speed void 3500inline_speed void
2168time_update (EV_P_ ev_tstamp max_block) 3501time_update (EV_P_ ev_tstamp max_block)
2169{ 3502{
2170#if EV_USE_MONOTONIC 3503#if EV_USE_MONOTONIC
2171 if (expect_true (have_monotonic)) 3504 if (expect_true (have_monotonic))
… …
2194 * doesn't hurt either as we only do this on time-jumps or 3527 * doesn't hurt either as we only do this on time-jumps or
2195 * in the unlikely event of having been preempted here. 3528 * in the unlikely event of having been preempted here.
2196 */ 3529 */
2197 for (i = 4; --i; ) 3530 for (i = 4; --i; )
2198 { 3531 {
3532 ev_tstamp diff;
2199 rtmn_diff = ev_rt_now - mn_now; 3533 rtmn_diff = ev_rt_now - mn_now;
2200 3534
3535 diff = odiff - rtmn_diff;
3536
2201 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3537 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2202 return; /* all is well */ 3538 return; /* all is well */
2203 3539
2204 ev_rt_now = ev_time (); 3540 ev_rt_now = ev_time ();
2205 mn_now = get_clock (); 3541 mn_now = get_clock ();
2206 now_floor = mn_now; 3542 now_floor = mn_now;
… …
2228 3564
2229 mn_now = ev_rt_now; 3565 mn_now = ev_rt_now;
2230 } 3566 }
2231} 3567}
2232 3568
2233void 3569int
2234ev_loop (EV_P_ int flags) 3570ev_run (EV_P_ int flags)
2235{ 3571{
2236#if EV_MINIMAL < 2 3572#if EV_FEATURE_API
2237 ++loop_depth; 3573 ++loop_depth;
2238#endif 3574#endif
2239 3575
2240 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 3576 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2241 3577
2242 loop_done = EVUNLOOP_CANCEL; 3578 loop_done = EVBREAK_CANCEL;
2243 3579
2244 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 3580 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2245 3581
2246 do 3582 do
2247 { 3583 {
2248#if EV_VERIFY >= 2 3584#if EV_VERIFY >= 2
2249 ev_loop_verify (EV_A); 3585 ev_verify (EV_A);
2250#endif 3586#endif
2251 3587
2252#ifndef _WIN32 3588#ifndef _WIN32
2253 if (expect_false (curpid)) /* penalise the forking check even more */ 3589 if (expect_false (curpid)) /* penalise the forking check even more */
2254 if (expect_false (getpid () != curpid)) 3590 if (expect_false (getpid () != curpid))
… …
2266 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3602 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2267 EV_INVOKE_PENDING; 3603 EV_INVOKE_PENDING;
2268 } 3604 }
2269#endif 3605#endif
2270 3606
3607#if EV_PREPARE_ENABLE
2271 /* queue prepare watchers (and execute them) */ 3608 /* queue prepare watchers (and execute them) */
2272 if (expect_false (preparecnt)) 3609 if (expect_false (preparecnt))
2273 { 3610 {
2274 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3611 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2275 EV_INVOKE_PENDING; 3612 EV_INVOKE_PENDING;
2276 } 3613 }
3614#endif
2277 3615
2278 if (expect_false (loop_done)) 3616 if (expect_false (loop_done))
2279 break; 3617 break;
2280 3618
2281 /* we might have forked, so reify kernel state if necessary */ 3619 /* we might have forked, so reify kernel state if necessary */
… …
2288 /* calculate blocking time */ 3626 /* calculate blocking time */
2289 { 3627 {
2290 ev_tstamp waittime = 0.; 3628 ev_tstamp waittime = 0.;
2291 ev_tstamp sleeptime = 0.; 3629 ev_tstamp sleeptime = 0.;
2292 3630
3631 /* remember old timestamp for io_blocktime calculation */
3632 ev_tstamp prev_mn_now = mn_now;
3633
3634 /* update time to cancel out callback processing overhead */
3635 time_update (EV_A_ 1e100);
3636
3637 /* from now on, we want a pipe-wake-up */
3638 pipe_write_wanted = 1;
3639
3640 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3641
2293 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3642 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2294 { 3643 {
2295 /* remember old timestamp for io_blocktime calculation */
2296 ev_tstamp prev_mn_now = mn_now;
2297
2298 /* update time to cancel out callback processing overhead */
2299 time_update (EV_A_ 1e100);
2300
2301 waittime = MAX_BLOCKTIME; 3644 waittime = MAX_BLOCKTIME;
2302 3645
2303 if (timercnt) 3646 if (timercnt)
2304 { 3647 {
2305 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3648 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2306 if (waittime > to) waittime = to; 3649 if (waittime > to) waittime = to;
2307 } 3650 }
2308 3651
2309#if EV_PERIODIC_ENABLE 3652#if EV_PERIODIC_ENABLE
2310 if (periodiccnt) 3653 if (periodiccnt)
2311 { 3654 {
2312 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3655 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2313 if (waittime > to) waittime = to; 3656 if (waittime > to) waittime = to;
2314 } 3657 }
2315#endif 3658#endif
2316 3659
2317 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3660 /* don't let timeouts decrease the waittime below timeout_blocktime */
2318 if (expect_false (waittime < timeout_blocktime)) 3661 if (expect_false (waittime < timeout_blocktime))
2319 waittime = timeout_blocktime; 3662 waittime = timeout_blocktime;
3663
3664 /* at this point, we NEED to wait, so we have to ensure */
3665 /* to pass a minimum nonzero value to the backend */
3666 if (expect_false (waittime < backend_mintime))
3667 waittime = backend_mintime;
2320 3668
2321 /* extra check because io_blocktime is commonly 0 */ 3669 /* extra check because io_blocktime is commonly 0 */
2322 if (expect_false (io_blocktime)) 3670 if (expect_false (io_blocktime))
2323 { 3671 {
2324 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3672 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2325 3673
2326 if (sleeptime > waittime - backend_fudge) 3674 if (sleeptime > waittime - backend_mintime)
2327 sleeptime = waittime - backend_fudge; 3675 sleeptime = waittime - backend_mintime;
2328 3676
2329 if (expect_true (sleeptime > 0.)) 3677 if (expect_true (sleeptime > 0.))
2330 { 3678 {
2331 ev_sleep (sleeptime); 3679 ev_sleep (sleeptime);
2332 waittime -= sleeptime; 3680 waittime -= sleeptime;
2333 } 3681 }
2334 } 3682 }
2335 } 3683 }
2336 3684
2337#if EV_MINIMAL < 2 3685#if EV_FEATURE_API
2338 ++loop_count; 3686 ++loop_count;
2339#endif 3687#endif
2340 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3688 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2341 backend_poll (EV_A_ waittime); 3689 backend_poll (EV_A_ waittime);
2342 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 3690 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3691
3692 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3693
3694 ECB_MEMORY_FENCE_ACQUIRE;
3695 if (pipe_write_skipped)
3696 {
3697 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3698 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3699 }
3700
2343 3701
2344 /* update ev_rt_now, do magic */ 3702 /* update ev_rt_now, do magic */
2345 time_update (EV_A_ waittime + sleeptime); 3703 time_update (EV_A_ waittime + sleeptime);
2346 } 3704 }
2347 3705
… …
2354#if EV_IDLE_ENABLE 3712#if EV_IDLE_ENABLE
2355 /* queue idle watchers unless other events are pending */ 3713 /* queue idle watchers unless other events are pending */
2356 idle_reify (EV_A); 3714 idle_reify (EV_A);
2357#endif 3715#endif
2358 3716
3717#if EV_CHECK_ENABLE
2359 /* queue check watchers, to be executed first */ 3718 /* queue check watchers, to be executed first */
2360 if (expect_false (checkcnt)) 3719 if (expect_false (checkcnt))
2361 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3720 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3721#endif
2362 3722
2363 EV_INVOKE_PENDING; 3723 EV_INVOKE_PENDING;
2364 } 3724 }
2365 while (expect_true ( 3725 while (expect_true (
2366 activecnt 3726 activecnt
2367 && !loop_done 3727 && !loop_done
2368 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3728 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2369 )); 3729 ));
2370 3730
2371 if (loop_done == EVUNLOOP_ONE) 3731 if (loop_done == EVBREAK_ONE)
2372 loop_done = EVUNLOOP_CANCEL; 3732 loop_done = EVBREAK_CANCEL;
2373 3733
2374#if EV_MINIMAL < 2 3734#if EV_FEATURE_API
2375 --loop_depth; 3735 --loop_depth;
2376#endif 3736#endif
2377}
2378 3737
3738 return activecnt;
3739}
3740
2379void 3741void
2380ev_unloop (EV_P_ int how) 3742ev_break (EV_P_ int how) EV_NOEXCEPT
2381{ 3743{
2382 loop_done = how; 3744 loop_done = how;
2383} 3745}
2384 3746
2385void 3747void
2386ev_ref (EV_P) 3748ev_ref (EV_P) EV_NOEXCEPT
2387{ 3749{
2388 ++activecnt; 3750 ++activecnt;
2389} 3751}
2390 3752
2391void 3753void
2392ev_unref (EV_P) 3754ev_unref (EV_P) EV_NOEXCEPT
2393{ 3755{
2394 --activecnt; 3756 --activecnt;
2395} 3757}
2396 3758
2397void 3759void
2398ev_now_update (EV_P) 3760ev_now_update (EV_P) EV_NOEXCEPT
2399{ 3761{
2400 time_update (EV_A_ 1e100); 3762 time_update (EV_A_ 1e100);
2401} 3763}
2402 3764
2403void 3765void
2404ev_suspend (EV_P) 3766ev_suspend (EV_P) EV_NOEXCEPT
2405{ 3767{
2406 ev_now_update (EV_A); 3768 ev_now_update (EV_A);
2407} 3769}
2408 3770
2409void 3771void
2410ev_resume (EV_P) 3772ev_resume (EV_P) EV_NOEXCEPT
2411{ 3773{
2412 ev_tstamp mn_prev = mn_now; 3774 ev_tstamp mn_prev = mn_now;
2413 3775
2414 ev_now_update (EV_A); 3776 ev_now_update (EV_A);
2415 timers_reschedule (EV_A_ mn_now - mn_prev); 3777 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2454 w->pending = 0; 3816 w->pending = 0;
2455 } 3817 }
2456} 3818}
2457 3819
2458int 3820int
2459ev_clear_pending (EV_P_ void *w) 3821ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
2460{ 3822{
2461 W w_ = (W)w; 3823 W w_ = (W)w;
2462 int pending = w_->pending; 3824 int pending = w_->pending;
2463 3825
2464 if (expect_true (pending)) 3826 if (expect_true (pending))
… …
2496 w->active = 0; 3858 w->active = 0;
2497} 3859}
2498 3860
2499/*****************************************************************************/ 3861/*****************************************************************************/
2500 3862
2501void noinline 3863noinline
3864void
2502ev_io_start (EV_P_ ev_io *w) 3865ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
2503{ 3866{
2504 int fd = w->fd; 3867 int fd = w->fd;
2505 3868
2506 if (expect_false (ev_is_active (w))) 3869 if (expect_false (ev_is_active (w)))
2507 return; 3870 return;
2508 3871
2509 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 3872 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2510 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 3873 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2511 3874
2512 EV_FREQUENT_CHECK; 3875 EV_FREQUENT_CHECK;
2513 3876
2514 ev_start (EV_A_ (W)w, 1); 3877 ev_start (EV_A_ (W)w, 1);
2515 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3878 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2516 wlist_add (&anfds[fd].head, (WL)w); 3879 wlist_add (&anfds[fd].head, (WL)w);
2517 3880
3881 /* common bug, apparently */
3882 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3883
2518 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3884 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2519 w->events &= ~EV__IOFDSET; 3885 w->events &= ~EV__IOFDSET;
2520 3886
2521 EV_FREQUENT_CHECK; 3887 EV_FREQUENT_CHECK;
2522} 3888}
2523 3889
2524void noinline 3890noinline
3891void
2525ev_io_stop (EV_P_ ev_io *w) 3892ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
2526{ 3893{
2527 clear_pending (EV_A_ (W)w); 3894 clear_pending (EV_A_ (W)w);
2528 if (expect_false (!ev_is_active (w))) 3895 if (expect_false (!ev_is_active (w)))
2529 return; 3896 return;
2530 3897
… …
2533 EV_FREQUENT_CHECK; 3900 EV_FREQUENT_CHECK;
2534 3901
2535 wlist_del (&anfds[w->fd].head, (WL)w); 3902 wlist_del (&anfds[w->fd].head, (WL)w);
2536 ev_stop (EV_A_ (W)w); 3903 ev_stop (EV_A_ (W)w);
2537 3904
2538 fd_change (EV_A_ w->fd, 1); 3905 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2539 3906
2540 EV_FREQUENT_CHECK; 3907 EV_FREQUENT_CHECK;
2541} 3908}
2542 3909
2543void noinline 3910noinline
3911void
2544ev_timer_start (EV_P_ ev_timer *w) 3912ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
2545{ 3913{
2546 if (expect_false (ev_is_active (w))) 3914 if (expect_false (ev_is_active (w)))
2547 return; 3915 return;
2548 3916
2549 ev_at (w) += mn_now; 3917 ev_at (w) += mn_now;
… …
2562 EV_FREQUENT_CHECK; 3930 EV_FREQUENT_CHECK;
2563 3931
2564 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3932 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2565} 3933}
2566 3934
2567void noinline 3935noinline
3936void
2568ev_timer_stop (EV_P_ ev_timer *w) 3937ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
2569{ 3938{
2570 clear_pending (EV_A_ (W)w); 3939 clear_pending (EV_A_ (W)w);
2571 if (expect_false (!ev_is_active (w))) 3940 if (expect_false (!ev_is_active (w)))
2572 return; 3941 return;
2573 3942
… …
2585 timers [active] = timers [timercnt + HEAP0]; 3954 timers [active] = timers [timercnt + HEAP0];
2586 adjustheap (timers, timercnt, active); 3955 adjustheap (timers, timercnt, active);
2587 } 3956 }
2588 } 3957 }
2589 3958
2590 EV_FREQUENT_CHECK;
2591
2592 ev_at (w) -= mn_now; 3959 ev_at (w) -= mn_now;
2593 3960
2594 ev_stop (EV_A_ (W)w); 3961 ev_stop (EV_A_ (W)w);
2595}
2596 3962
3963 EV_FREQUENT_CHECK;
3964}
3965
2597void noinline 3966noinline
3967void
2598ev_timer_again (EV_P_ ev_timer *w) 3968ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
2599{ 3969{
2600 EV_FREQUENT_CHECK; 3970 EV_FREQUENT_CHECK;
3971
3972 clear_pending (EV_A_ (W)w);
2601 3973
2602 if (ev_is_active (w)) 3974 if (ev_is_active (w))
2603 { 3975 {
2604 if (w->repeat) 3976 if (w->repeat)
2605 { 3977 {
… …
2618 3990
2619 EV_FREQUENT_CHECK; 3991 EV_FREQUENT_CHECK;
2620} 3992}
2621 3993
2622ev_tstamp 3994ev_tstamp
2623ev_timer_remaining (EV_P_ ev_timer *w) 3995ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
2624{ 3996{
2625 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3997 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2626} 3998}
2627 3999
2628#if EV_PERIODIC_ENABLE 4000#if EV_PERIODIC_ENABLE
2629void noinline 4001noinline
4002void
2630ev_periodic_start (EV_P_ ev_periodic *w) 4003ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
2631{ 4004{
2632 if (expect_false (ev_is_active (w))) 4005 if (expect_false (ev_is_active (w)))
2633 return; 4006 return;
2634 4007
2635 if (w->reschedule_cb) 4008 if (w->reschedule_cb)
2636 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4009 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2637 else if (w->interval) 4010 else if (w->interval)
2638 { 4011 {
2639 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 4012 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2640 /* this formula differs from the one in periodic_reify because we do not always round up */ 4013 periodic_recalc (EV_A_ w);
2641 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2642 } 4014 }
2643 else 4015 else
2644 ev_at (w) = w->offset; 4016 ev_at (w) = w->offset;
2645 4017
2646 EV_FREQUENT_CHECK; 4018 EV_FREQUENT_CHECK;
… …
2655 EV_FREQUENT_CHECK; 4027 EV_FREQUENT_CHECK;
2656 4028
2657 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4029 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2658} 4030}
2659 4031
2660void noinline 4032noinline
4033void
2661ev_periodic_stop (EV_P_ ev_periodic *w) 4034ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
2662{ 4035{
2663 clear_pending (EV_A_ (W)w); 4036 clear_pending (EV_A_ (W)w);
2664 if (expect_false (!ev_is_active (w))) 4037 if (expect_false (!ev_is_active (w)))
2665 return; 4038 return;
2666 4039
… …
2678 periodics [active] = periodics [periodiccnt + HEAP0]; 4051 periodics [active] = periodics [periodiccnt + HEAP0];
2679 adjustheap (periodics, periodiccnt, active); 4052 adjustheap (periodics, periodiccnt, active);
2680 } 4053 }
2681 } 4054 }
2682 4055
2683 EV_FREQUENT_CHECK;
2684
2685 ev_stop (EV_A_ (W)w); 4056 ev_stop (EV_A_ (W)w);
2686}
2687 4057
4058 EV_FREQUENT_CHECK;
4059}
4060
2688void noinline 4061noinline
4062void
2689ev_periodic_again (EV_P_ ev_periodic *w) 4063ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
2690{ 4064{
2691 /* TODO: use adjustheap and recalculation */ 4065 /* TODO: use adjustheap and recalculation */
2692 ev_periodic_stop (EV_A_ w); 4066 ev_periodic_stop (EV_A_ w);
2693 ev_periodic_start (EV_A_ w); 4067 ev_periodic_start (EV_A_ w);
2694} 4068}
… …
2696 4070
2697#ifndef SA_RESTART 4071#ifndef SA_RESTART
2698# define SA_RESTART 0 4072# define SA_RESTART 0
2699#endif 4073#endif
2700 4074
4075#if EV_SIGNAL_ENABLE
4076
2701void noinline 4077noinline
4078void
2702ev_signal_start (EV_P_ ev_signal *w) 4079ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
2703{ 4080{
2704 if (expect_false (ev_is_active (w))) 4081 if (expect_false (ev_is_active (w)))
2705 return; 4082 return;
2706 4083
2707 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4084 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
… …
2709#if EV_MULTIPLICITY 4086#if EV_MULTIPLICITY
2710 assert (("libev: a signal must not be attached to two different loops", 4087 assert (("libev: a signal must not be attached to two different loops",
2711 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4088 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2712 4089
2713 signals [w->signum - 1].loop = EV_A; 4090 signals [w->signum - 1].loop = EV_A;
4091 ECB_MEMORY_FENCE_RELEASE;
2714#endif 4092#endif
2715 4093
2716 EV_FREQUENT_CHECK; 4094 EV_FREQUENT_CHECK;
2717 4095
2718#if EV_USE_SIGNALFD 4096#if EV_USE_SIGNALFD
… …
2751 if (!((WL)w)->next) 4129 if (!((WL)w)->next)
2752# if EV_USE_SIGNALFD 4130# if EV_USE_SIGNALFD
2753 if (sigfd < 0) /*TODO*/ 4131 if (sigfd < 0) /*TODO*/
2754# endif 4132# endif
2755 { 4133 {
2756# if _WIN32 4134# ifdef _WIN32
4135 evpipe_init (EV_A);
4136
2757 signal (w->signum, ev_sighandler); 4137 signal (w->signum, ev_sighandler);
2758# else 4138# else
2759 struct sigaction sa; 4139 struct sigaction sa;
2760 4140
2761 evpipe_init (EV_A); 4141 evpipe_init (EV_A);
… …
2763 sa.sa_handler = ev_sighandler; 4143 sa.sa_handler = ev_sighandler;
2764 sigfillset (&sa.sa_mask); 4144 sigfillset (&sa.sa_mask);
2765 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 4145 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2766 sigaction (w->signum, &sa, 0); 4146 sigaction (w->signum, &sa, 0);
2767 4147
4148 if (origflags & EVFLAG_NOSIGMASK)
4149 {
2768 sigemptyset (&sa.sa_mask); 4150 sigemptyset (&sa.sa_mask);
2769 sigaddset (&sa.sa_mask, w->signum); 4151 sigaddset (&sa.sa_mask, w->signum);
2770 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 4152 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
4153 }
2771#endif 4154#endif
2772 } 4155 }
2773 4156
2774 EV_FREQUENT_CHECK; 4157 EV_FREQUENT_CHECK;
2775} 4158}
2776 4159
2777void noinline 4160noinline
4161void
2778ev_signal_stop (EV_P_ ev_signal *w) 4162ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
2779{ 4163{
2780 clear_pending (EV_A_ (W)w); 4164 clear_pending (EV_A_ (W)w);
2781 if (expect_false (!ev_is_active (w))) 4165 if (expect_false (!ev_is_active (w)))
2782 return; 4166 return;
2783 4167
… …
2792 signals [w->signum - 1].loop = 0; /* unattach from signal */ 4176 signals [w->signum - 1].loop = 0; /* unattach from signal */
2793#endif 4177#endif
2794#if EV_USE_SIGNALFD 4178#if EV_USE_SIGNALFD
2795 if (sigfd >= 0) 4179 if (sigfd >= 0)
2796 { 4180 {
2797 sigprocmask (SIG_UNBLOCK, &sigfd_set, 0);//D 4181 sigset_t ss;
4182
4183 sigemptyset (&ss);
4184 sigaddset (&ss, w->signum);
2798 sigdelset (&sigfd_set, w->signum); 4185 sigdelset (&sigfd_set, w->signum);
4186
2799 signalfd (sigfd, &sigfd_set, 0); 4187 signalfd (sigfd, &sigfd_set, 0);
2800 sigprocmask (SIG_BLOCK, &sigfd_set, 0);//D 4188 sigprocmask (SIG_UNBLOCK, &ss, 0);
2801 /*TODO: maybe unblock signal? */
2802 } 4189 }
2803 else 4190 else
2804#endif 4191#endif
2805 signal (w->signum, SIG_DFL); 4192 signal (w->signum, SIG_DFL);
2806 } 4193 }
2807 4194
2808 EV_FREQUENT_CHECK; 4195 EV_FREQUENT_CHECK;
2809} 4196}
2810 4197
4198#endif
4199
4200#if EV_CHILD_ENABLE
4201
2811void 4202void
2812ev_child_start (EV_P_ ev_child *w) 4203ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
2813{ 4204{
2814#if EV_MULTIPLICITY 4205#if EV_MULTIPLICITY
2815 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4206 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2816#endif 4207#endif
2817 if (expect_false (ev_is_active (w))) 4208 if (expect_false (ev_is_active (w)))
2818 return; 4209 return;
2819 4210
2820 EV_FREQUENT_CHECK; 4211 EV_FREQUENT_CHECK;
2821 4212
2822 ev_start (EV_A_ (W)w, 1); 4213 ev_start (EV_A_ (W)w, 1);
2823 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4214 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2824 4215
2825 EV_FREQUENT_CHECK; 4216 EV_FREQUENT_CHECK;
2826} 4217}
2827 4218
2828void 4219void
2829ev_child_stop (EV_P_ ev_child *w) 4220ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
2830{ 4221{
2831 clear_pending (EV_A_ (W)w); 4222 clear_pending (EV_A_ (W)w);
2832 if (expect_false (!ev_is_active (w))) 4223 if (expect_false (!ev_is_active (w)))
2833 return; 4224 return;
2834 4225
2835 EV_FREQUENT_CHECK; 4226 EV_FREQUENT_CHECK;
2836 4227
2837 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4228 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2838 ev_stop (EV_A_ (W)w); 4229 ev_stop (EV_A_ (W)w);
2839 4230
2840 EV_FREQUENT_CHECK; 4231 EV_FREQUENT_CHECK;
2841} 4232}
4233
4234#endif
2842 4235
2843#if EV_STAT_ENABLE 4236#if EV_STAT_ENABLE
2844 4237
2845# ifdef _WIN32 4238# ifdef _WIN32
2846# undef lstat 4239# undef lstat
… …
2849 4242
2850#define DEF_STAT_INTERVAL 5.0074891 4243#define DEF_STAT_INTERVAL 5.0074891
2851#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4244#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2852#define MIN_STAT_INTERVAL 0.1074891 4245#define MIN_STAT_INTERVAL 0.1074891
2853 4246
2854static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4247noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2855 4248
2856#if EV_USE_INOTIFY 4249#if EV_USE_INOTIFY
2857# define EV_INOTIFY_BUFSIZE 8192
2858 4250
2859static void noinline 4251/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
4252# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
4253
4254noinline
4255static void
2860infy_add (EV_P_ ev_stat *w) 4256infy_add (EV_P_ ev_stat *w)
2861{ 4257{
2862 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); 4258 w->wd = inotify_add_watch (fs_fd, w->path,
4259 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4260 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4261 | IN_DONT_FOLLOW | IN_MASK_ADD);
2863 4262
2864 if (w->wd < 0) 4263 if (w->wd >= 0)
4264 {
4265 struct statfs sfs;
4266
4267 /* now local changes will be tracked by inotify, but remote changes won't */
4268 /* unless the filesystem is known to be local, we therefore still poll */
4269 /* also do poll on <2.6.25, but with normal frequency */
4270
4271 if (!fs_2625)
4272 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
4273 else if (!statfs (w->path, &sfs)
4274 && (sfs.f_type == 0x1373 /* devfs */
4275 || sfs.f_type == 0x4006 /* fat */
4276 || sfs.f_type == 0x4d44 /* msdos */
4277 || sfs.f_type == 0xEF53 /* ext2/3 */
4278 || sfs.f_type == 0x72b6 /* jffs2 */
4279 || sfs.f_type == 0x858458f6 /* ramfs */
4280 || sfs.f_type == 0x5346544e /* ntfs */
4281 || sfs.f_type == 0x3153464a /* jfs */
4282 || sfs.f_type == 0x9123683e /* btrfs */
4283 || sfs.f_type == 0x52654973 /* reiser3 */
4284 || sfs.f_type == 0x01021994 /* tmpfs */
4285 || sfs.f_type == 0x58465342 /* xfs */))
4286 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
4287 else
4288 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2865 { 4289 }
4290 else
4291 {
4292 /* can't use inotify, continue to stat */
2866 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4293 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2867 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2868 4294
2869 /* monitor some parent directory for speedup hints */ 4295 /* if path is not there, monitor some parent directory for speedup hints */
2870 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 4296 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2871 /* but an efficiency issue only */ 4297 /* but an efficiency issue only */
2872 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 4298 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2873 { 4299 {
2874 char path [4096]; 4300 char path [4096];
… …
2884 if (!pend || pend == path) 4310 if (!pend || pend == path)
2885 break; 4311 break;
2886 4312
2887 *pend = 0; 4313 *pend = 0;
2888 w->wd = inotify_add_watch (fs_fd, path, mask); 4314 w->wd = inotify_add_watch (fs_fd, path, mask);
2889 } 4315 }
2890 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 4316 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2891 } 4317 }
2892 } 4318 }
2893 4319
2894 if (w->wd >= 0) 4320 if (w->wd >= 0)
2895 {
2896 struct statfs sfs;
2897
2898 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4321 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2899 4322
2900 /* now local changes will be tracked by inotify, but remote changes won't */ 4323 /* now re-arm timer, if required */
2901 /* unless the filesystem it known to be local, we therefore still poll */ 4324 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2902 /* also do poll on <2.6.25, but with normal frequency */
2903
2904 if (fs_2625 && !statfs (w->path, &sfs))
2905 if (sfs.f_type == 0x1373 /* devfs */
2906 || sfs.f_type == 0xEF53 /* ext2/3 */
2907 || sfs.f_type == 0x3153464a /* jfs */
2908 || sfs.f_type == 0x52654973 /* reiser3 */
2909 || sfs.f_type == 0x01021994 /* tempfs */
2910 || sfs.f_type == 0x58465342 /* xfs */)
2911 return;
2912
2913 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2914 ev_timer_again (EV_A_ &w->timer); 4325 ev_timer_again (EV_A_ &w->timer);
2915 } 4326 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2916} 4327}
2917 4328
2918static void noinline 4329noinline
4330static void
2919infy_del (EV_P_ ev_stat *w) 4331infy_del (EV_P_ ev_stat *w)
2920{ 4332{
2921 int slot; 4333 int slot;
2922 int wd = w->wd; 4334 int wd = w->wd;
2923 4335
2924 if (wd < 0) 4336 if (wd < 0)
2925 return; 4337 return;
2926 4338
2927 w->wd = -2; 4339 w->wd = -2;
2928 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 4340 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2929 wlist_del (&fs_hash [slot].head, (WL)w); 4341 wlist_del (&fs_hash [slot].head, (WL)w);
2930 4342
2931 /* remove this watcher, if others are watching it, they will rearm */ 4343 /* remove this watcher, if others are watching it, they will rearm */
2932 inotify_rm_watch (fs_fd, wd); 4344 inotify_rm_watch (fs_fd, wd);
2933} 4345}
2934 4346
2935static void noinline 4347noinline
4348static void
2936infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4349infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2937{ 4350{
2938 if (slot < 0) 4351 if (slot < 0)
2939 /* overflow, need to check for all hash slots */ 4352 /* overflow, need to check for all hash slots */
2940 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4353 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2941 infy_wd (EV_A_ slot, wd, ev); 4354 infy_wd (EV_A_ slot, wd, ev);
2942 else 4355 else
2943 { 4356 {
2944 WL w_; 4357 WL w_;
2945 4358
2946 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 4359 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2947 { 4360 {
2948 ev_stat *w = (ev_stat *)w_; 4361 ev_stat *w = (ev_stat *)w_;
2949 w_ = w_->next; /* lets us remove this watcher and all before it */ 4362 w_ = w_->next; /* lets us remove this watcher and all before it */
2950 4363
2951 if (w->wd == wd || wd == -1) 4364 if (w->wd == wd || wd == -1)
2952 { 4365 {
2953 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 4366 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2954 { 4367 {
2955 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4368 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2956 w->wd = -1; 4369 w->wd = -1;
2957 infy_add (EV_A_ w); /* re-add, no matter what */ 4370 infy_add (EV_A_ w); /* re-add, no matter what */
2958 } 4371 }
2959 4372
2960 stat_timer_cb (EV_A_ &w->timer, 0); 4373 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2965 4378
2966static void 4379static void
2967infy_cb (EV_P_ ev_io *w, int revents) 4380infy_cb (EV_P_ ev_io *w, int revents)
2968{ 4381{
2969 char buf [EV_INOTIFY_BUFSIZE]; 4382 char buf [EV_INOTIFY_BUFSIZE];
2970 struct inotify_event *ev = (struct inotify_event *)buf;
2971 int ofs; 4383 int ofs;
2972 int len = read (fs_fd, buf, sizeof (buf)); 4384 int len = read (fs_fd, buf, sizeof (buf));
2973 4385
2974 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 4386 for (ofs = 0; ofs < len; )
4387 {
4388 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2975 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4389 infy_wd (EV_A_ ev->wd, ev->wd, ev);
4390 ofs += sizeof (struct inotify_event) + ev->len;
4391 }
2976} 4392}
2977 4393
2978inline_size void 4394inline_size ecb_cold
4395void
2979check_2625 (EV_P) 4396ev_check_2625 (EV_P)
2980{ 4397{
2981 /* kernels < 2.6.25 are borked 4398 /* kernels < 2.6.25 are borked
2982 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4399 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2983 */ 4400 */
2984 struct utsname buf; 4401 if (ev_linux_version () < 0x020619)
2985 int major, minor, micro;
2986
2987 if (uname (&buf))
2988 return;
2989
2990 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2991 return;
2992
2993 if (major < 2
2994 || (major == 2 && minor < 6)
2995 || (major == 2 && minor == 6 && micro < 25))
2996 return; 4402 return;
2997 4403
2998 fs_2625 = 1; 4404 fs_2625 = 1;
2999} 4405}
3000 4406
3001inline_size int 4407inline_size int
3002infy_newfd (void) 4408infy_newfd (void)
3003{ 4409{
3004#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4410#if defined IN_CLOEXEC && defined IN_NONBLOCK
3005 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4411 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3006 if (fd >= 0) 4412 if (fd >= 0)
3007 return fd; 4413 return fd;
3008#endif 4414#endif
3009 return inotify_init (); 4415 return inotify_init ();
… …
3015 if (fs_fd != -2) 4421 if (fs_fd != -2)
3016 return; 4422 return;
3017 4423
3018 fs_fd = -1; 4424 fs_fd = -1;
3019 4425
3020 check_2625 (EV_A); 4426 ev_check_2625 (EV_A);
3021 4427
3022 fs_fd = infy_newfd (); 4428 fs_fd = infy_newfd ();
3023 4429
3024 if (fs_fd >= 0) 4430 if (fs_fd >= 0)
3025 { 4431 {
3026 fd_intern (fs_fd); 4432 fd_intern (fs_fd);
3027 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 4433 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
3028 ev_set_priority (&fs_w, EV_MAXPRI); 4434 ev_set_priority (&fs_w, EV_MAXPRI);
3029 ev_io_start (EV_A_ &fs_w); 4435 ev_io_start (EV_A_ &fs_w);
4436 ev_unref (EV_A);
3030 } 4437 }
3031} 4438}
3032 4439
3033inline_size void 4440inline_size void
3034infy_fork (EV_P) 4441infy_fork (EV_P)
… …
3036 int slot; 4443 int slot;
3037 4444
3038 if (fs_fd < 0) 4445 if (fs_fd < 0)
3039 return; 4446 return;
3040 4447
4448 ev_ref (EV_A);
3041 ev_io_stop (EV_A_ &fs_w); 4449 ev_io_stop (EV_A_ &fs_w);
3042 close (fs_fd); 4450 close (fs_fd);
3043 fs_fd = infy_newfd (); 4451 fs_fd = infy_newfd ();
3044 4452
3045 if (fs_fd >= 0) 4453 if (fs_fd >= 0)
3046 { 4454 {
3047 fd_intern (fs_fd); 4455 fd_intern (fs_fd);
3048 ev_io_set (&fs_w, fs_fd, EV_READ); 4456 ev_io_set (&fs_w, fs_fd, EV_READ);
3049 ev_io_start (EV_A_ &fs_w); 4457 ev_io_start (EV_A_ &fs_w);
4458 ev_unref (EV_A);
3050 } 4459 }
3051 4460
3052 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4461 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
3053 { 4462 {
3054 WL w_ = fs_hash [slot].head; 4463 WL w_ = fs_hash [slot].head;
3055 fs_hash [slot].head = 0; 4464 fs_hash [slot].head = 0;
3056 4465
3057 while (w_) 4466 while (w_)
… …
3062 w->wd = -1; 4471 w->wd = -1;
3063 4472
3064 if (fs_fd >= 0) 4473 if (fs_fd >= 0)
3065 infy_add (EV_A_ w); /* re-add, no matter what */ 4474 infy_add (EV_A_ w); /* re-add, no matter what */
3066 else 4475 else
4476 {
4477 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
4478 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3067 ev_timer_again (EV_A_ &w->timer); 4479 ev_timer_again (EV_A_ &w->timer);
4480 if (ev_is_active (&w->timer)) ev_unref (EV_A);
4481 }
3068 } 4482 }
3069 } 4483 }
3070} 4484}
3071 4485
3072#endif 4486#endif
… …
3076#else 4490#else
3077# define EV_LSTAT(p,b) lstat (p, b) 4491# define EV_LSTAT(p,b) lstat (p, b)
3078#endif 4492#endif
3079 4493
3080void 4494void
3081ev_stat_stat (EV_P_ ev_stat *w) 4495ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
3082{ 4496{
3083 if (lstat (w->path, &w->attr) < 0) 4497 if (lstat (w->path, &w->attr) < 0)
3084 w->attr.st_nlink = 0; 4498 w->attr.st_nlink = 0;
3085 else if (!w->attr.st_nlink) 4499 else if (!w->attr.st_nlink)
3086 w->attr.st_nlink = 1; 4500 w->attr.st_nlink = 1;
3087} 4501}
3088 4502
3089static void noinline 4503noinline
4504static void
3090stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4505stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3091{ 4506{
3092 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4507 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3093 4508
3094 /* we copy this here each the time so that */ 4509 ev_statdata prev = w->attr;
3095 /* prev has the old value when the callback gets invoked */
3096 w->prev = w->attr;
3097 ev_stat_stat (EV_A_ w); 4510 ev_stat_stat (EV_A_ w);
3098 4511
3099 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 4512 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
3100 if ( 4513 if (
3101 w->prev.st_dev != w->attr.st_dev 4514 prev.st_dev != w->attr.st_dev
3102 || w->prev.st_ino != w->attr.st_ino 4515 || prev.st_ino != w->attr.st_ino
3103 || w->prev.st_mode != w->attr.st_mode 4516 || prev.st_mode != w->attr.st_mode
3104 || w->prev.st_nlink != w->attr.st_nlink 4517 || prev.st_nlink != w->attr.st_nlink
3105 || w->prev.st_uid != w->attr.st_uid 4518 || prev.st_uid != w->attr.st_uid
3106 || w->prev.st_gid != w->attr.st_gid 4519 || prev.st_gid != w->attr.st_gid
3107 || w->prev.st_rdev != w->attr.st_rdev 4520 || prev.st_rdev != w->attr.st_rdev
3108 || w->prev.st_size != w->attr.st_size 4521 || prev.st_size != w->attr.st_size
3109 || w->prev.st_atime != w->attr.st_atime 4522 || prev.st_atime != w->attr.st_atime
3110 || w->prev.st_mtime != w->attr.st_mtime 4523 || prev.st_mtime != w->attr.st_mtime
3111 || w->prev.st_ctime != w->attr.st_ctime 4524 || prev.st_ctime != w->attr.st_ctime
3112 ) { 4525 ) {
4526 /* we only update w->prev on actual differences */
4527 /* in case we test more often than invoke the callback, */
4528 /* to ensure that prev is always different to attr */
4529 w->prev = prev;
4530
3113 #if EV_USE_INOTIFY 4531 #if EV_USE_INOTIFY
3114 if (fs_fd >= 0) 4532 if (fs_fd >= 0)
3115 { 4533 {
3116 infy_del (EV_A_ w); 4534 infy_del (EV_A_ w);
3117 infy_add (EV_A_ w); 4535 infy_add (EV_A_ w);
… …
3122 ev_feed_event (EV_A_ w, EV_STAT); 4540 ev_feed_event (EV_A_ w, EV_STAT);
3123 } 4541 }
3124} 4542}
3125 4543
3126void 4544void
3127ev_stat_start (EV_P_ ev_stat *w) 4545ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
3128{ 4546{
3129 if (expect_false (ev_is_active (w))) 4547 if (expect_false (ev_is_active (w)))
3130 return; 4548 return;
3131 4549
3132 ev_stat_stat (EV_A_ w); 4550 ev_stat_stat (EV_A_ w);
… …
3142 4560
3143 if (fs_fd >= 0) 4561 if (fs_fd >= 0)
3144 infy_add (EV_A_ w); 4562 infy_add (EV_A_ w);
3145 else 4563 else
3146#endif 4564#endif
4565 {
3147 ev_timer_again (EV_A_ &w->timer); 4566 ev_timer_again (EV_A_ &w->timer);
4567 ev_unref (EV_A);
4568 }
3148 4569
3149 ev_start (EV_A_ (W)w, 1); 4570 ev_start (EV_A_ (W)w, 1);
3150 4571
3151 EV_FREQUENT_CHECK; 4572 EV_FREQUENT_CHECK;
3152} 4573}
3153 4574
3154void 4575void
3155ev_stat_stop (EV_P_ ev_stat *w) 4576ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
3156{ 4577{
3157 clear_pending (EV_A_ (W)w); 4578 clear_pending (EV_A_ (W)w);
3158 if (expect_false (!ev_is_active (w))) 4579 if (expect_false (!ev_is_active (w)))
3159 return; 4580 return;
3160 4581
3161 EV_FREQUENT_CHECK; 4582 EV_FREQUENT_CHECK;
3162 4583
3163#if EV_USE_INOTIFY 4584#if EV_USE_INOTIFY
3164 infy_del (EV_A_ w); 4585 infy_del (EV_A_ w);
3165#endif 4586#endif
4587
4588 if (ev_is_active (&w->timer))
4589 {
4590 ev_ref (EV_A);
3166 ev_timer_stop (EV_A_ &w->timer); 4591 ev_timer_stop (EV_A_ &w->timer);
4592 }
3167 4593
3168 ev_stop (EV_A_ (W)w); 4594 ev_stop (EV_A_ (W)w);
3169 4595
3170 EV_FREQUENT_CHECK; 4596 EV_FREQUENT_CHECK;
3171} 4597}
3172#endif 4598#endif
3173 4599
3174#if EV_IDLE_ENABLE 4600#if EV_IDLE_ENABLE
3175void 4601void
3176ev_idle_start (EV_P_ ev_idle *w) 4602ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
3177{ 4603{
3178 if (expect_false (ev_is_active (w))) 4604 if (expect_false (ev_is_active (w)))
3179 return; 4605 return;
3180 4606
3181 pri_adjust (EV_A_ (W)w); 4607 pri_adjust (EV_A_ (W)w);
… …
3194 4620
3195 EV_FREQUENT_CHECK; 4621 EV_FREQUENT_CHECK;
3196} 4622}
3197 4623
3198void 4624void
3199ev_idle_stop (EV_P_ ev_idle *w) 4625ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
3200{ 4626{
3201 clear_pending (EV_A_ (W)w); 4627 clear_pending (EV_A_ (W)w);
3202 if (expect_false (!ev_is_active (w))) 4628 if (expect_false (!ev_is_active (w)))
3203 return; 4629 return;
3204 4630
… …
3216 4642
3217 EV_FREQUENT_CHECK; 4643 EV_FREQUENT_CHECK;
3218} 4644}
3219#endif 4645#endif
3220 4646
4647#if EV_PREPARE_ENABLE
3221void 4648void
3222ev_prepare_start (EV_P_ ev_prepare *w) 4649ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
3223{ 4650{
3224 if (expect_false (ev_is_active (w))) 4651 if (expect_false (ev_is_active (w)))
3225 return; 4652 return;
3226 4653
3227 EV_FREQUENT_CHECK; 4654 EV_FREQUENT_CHECK;
… …
3232 4659
3233 EV_FREQUENT_CHECK; 4660 EV_FREQUENT_CHECK;
3234} 4661}
3235 4662
3236void 4663void
3237ev_prepare_stop (EV_P_ ev_prepare *w) 4664ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
3238{ 4665{
3239 clear_pending (EV_A_ (W)w); 4666 clear_pending (EV_A_ (W)w);
3240 if (expect_false (!ev_is_active (w))) 4667 if (expect_false (!ev_is_active (w)))
3241 return; 4668 return;
3242 4669
… …
3251 4678
3252 ev_stop (EV_A_ (W)w); 4679 ev_stop (EV_A_ (W)w);
3253 4680
3254 EV_FREQUENT_CHECK; 4681 EV_FREQUENT_CHECK;
3255} 4682}
4683#endif
3256 4684
4685#if EV_CHECK_ENABLE
3257void 4686void
3258ev_check_start (EV_P_ ev_check *w) 4687ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
3259{ 4688{
3260 if (expect_false (ev_is_active (w))) 4689 if (expect_false (ev_is_active (w)))
3261 return; 4690 return;
3262 4691
3263 EV_FREQUENT_CHECK; 4692 EV_FREQUENT_CHECK;
… …
3268 4697
3269 EV_FREQUENT_CHECK; 4698 EV_FREQUENT_CHECK;
3270} 4699}
3271 4700
3272void 4701void
3273ev_check_stop (EV_P_ ev_check *w) 4702ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
3274{ 4703{
3275 clear_pending (EV_A_ (W)w); 4704 clear_pending (EV_A_ (W)w);
3276 if (expect_false (!ev_is_active (w))) 4705 if (expect_false (!ev_is_active (w)))
3277 return; 4706 return;
3278 4707
… …
3287 4716
3288 ev_stop (EV_A_ (W)w); 4717 ev_stop (EV_A_ (W)w);
3289 4718
3290 EV_FREQUENT_CHECK; 4719 EV_FREQUENT_CHECK;
3291} 4720}
4721#endif
3292 4722
3293#if EV_EMBED_ENABLE 4723#if EV_EMBED_ENABLE
3294void noinline 4724noinline
4725void
3295ev_embed_sweep (EV_P_ ev_embed *w) 4726ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
3296{ 4727{
3297 ev_loop (w->other, EVLOOP_NONBLOCK); 4728 ev_run (w->other, EVRUN_NOWAIT);
3298} 4729}
3299 4730
3300static void 4731static void
3301embed_io_cb (EV_P_ ev_io *io, int revents) 4732embed_io_cb (EV_P_ ev_io *io, int revents)
3302{ 4733{
3303 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4734 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3304 4735
3305 if (ev_cb (w)) 4736 if (ev_cb (w))
3306 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4737 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3307 else 4738 else
3308 ev_loop (w->other, EVLOOP_NONBLOCK); 4739 ev_run (w->other, EVRUN_NOWAIT);
3309} 4740}
3310 4741
3311static void 4742static void
3312embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4743embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3313{ 4744{
… …
3317 EV_P = w->other; 4748 EV_P = w->other;
3318 4749
3319 while (fdchangecnt) 4750 while (fdchangecnt)
3320 { 4751 {
3321 fd_reify (EV_A); 4752 fd_reify (EV_A);
3322 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4753 ev_run (EV_A_ EVRUN_NOWAIT);
3323 } 4754 }
3324 } 4755 }
3325} 4756}
3326 4757
3327static void 4758static void
… …
3333 4764
3334 { 4765 {
3335 EV_P = w->other; 4766 EV_P = w->other;
3336 4767
3337 ev_loop_fork (EV_A); 4768 ev_loop_fork (EV_A);
3338 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4769 ev_run (EV_A_ EVRUN_NOWAIT);
3339 } 4770 }
3340 4771
3341 ev_embed_start (EV_A_ w); 4772 ev_embed_start (EV_A_ w);
3342} 4773}
3343 4774
… …
3348 ev_idle_stop (EV_A_ idle); 4779 ev_idle_stop (EV_A_ idle);
3349} 4780}
3350#endif 4781#endif
3351 4782
3352void 4783void
3353ev_embed_start (EV_P_ ev_embed *w) 4784ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
3354{ 4785{
3355 if (expect_false (ev_is_active (w))) 4786 if (expect_false (ev_is_active (w)))
3356 return; 4787 return;
3357 4788
3358 { 4789 {
… …
3379 4810
3380 EV_FREQUENT_CHECK; 4811 EV_FREQUENT_CHECK;
3381} 4812}
3382 4813
3383void 4814void
3384ev_embed_stop (EV_P_ ev_embed *w) 4815ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
3385{ 4816{
3386 clear_pending (EV_A_ (W)w); 4817 clear_pending (EV_A_ (W)w);
3387 if (expect_false (!ev_is_active (w))) 4818 if (expect_false (!ev_is_active (w)))
3388 return; 4819 return;
3389 4820
… …
3391 4822
3392 ev_io_stop (EV_A_ &w->io); 4823 ev_io_stop (EV_A_ &w->io);
3393 ev_prepare_stop (EV_A_ &w->prepare); 4824 ev_prepare_stop (EV_A_ &w->prepare);
3394 ev_fork_stop (EV_A_ &w->fork); 4825 ev_fork_stop (EV_A_ &w->fork);
3395 4826
4827 ev_stop (EV_A_ (W)w);
4828
3396 EV_FREQUENT_CHECK; 4829 EV_FREQUENT_CHECK;
3397} 4830}
3398#endif 4831#endif
3399 4832
3400#if EV_FORK_ENABLE 4833#if EV_FORK_ENABLE
3401void 4834void
3402ev_fork_start (EV_P_ ev_fork *w) 4835ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
3403{ 4836{
3404 if (expect_false (ev_is_active (w))) 4837 if (expect_false (ev_is_active (w)))
3405 return; 4838 return;
3406 4839
3407 EV_FREQUENT_CHECK; 4840 EV_FREQUENT_CHECK;
… …
3412 4845
3413 EV_FREQUENT_CHECK; 4846 EV_FREQUENT_CHECK;
3414} 4847}
3415 4848
3416void 4849void
3417ev_fork_stop (EV_P_ ev_fork *w) 4850ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
3418{ 4851{
3419 clear_pending (EV_A_ (W)w); 4852 clear_pending (EV_A_ (W)w);
3420 if (expect_false (!ev_is_active (w))) 4853 if (expect_false (!ev_is_active (w)))
3421 return; 4854 return;
3422 4855
… …
3433 4866
3434 EV_FREQUENT_CHECK; 4867 EV_FREQUENT_CHECK;
3435} 4868}
3436#endif 4869#endif
3437 4870
3438#if EV_ASYNC_ENABLE 4871#if EV_CLEANUP_ENABLE
3439void 4872void
3440ev_async_start (EV_P_ ev_async *w) 4873ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
3441{ 4874{
3442 if (expect_false (ev_is_active (w))) 4875 if (expect_false (ev_is_active (w)))
3443 return; 4876 return;
4877
4878 EV_FREQUENT_CHECK;
4879
4880 ev_start (EV_A_ (W)w, ++cleanupcnt);
4881 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4882 cleanups [cleanupcnt - 1] = w;
4883
4884 /* cleanup watchers should never keep a refcount on the loop */
4885 ev_unref (EV_A);
4886 EV_FREQUENT_CHECK;
4887}
4888
4889void
4890ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4891{
4892 clear_pending (EV_A_ (W)w);
4893 if (expect_false (!ev_is_active (w)))
4894 return;
4895
4896 EV_FREQUENT_CHECK;
4897 ev_ref (EV_A);
4898
4899 {
4900 int active = ev_active (w);
4901
4902 cleanups [active - 1] = cleanups [--cleanupcnt];
4903 ev_active (cleanups [active - 1]) = active;
4904 }
4905
4906 ev_stop (EV_A_ (W)w);
4907
4908 EV_FREQUENT_CHECK;
4909}
4910#endif
4911
4912#if EV_ASYNC_ENABLE
4913void
4914ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
4915{
4916 if (expect_false (ev_is_active (w)))
4917 return;
4918
4919 w->sent = 0;
3444 4920
3445 evpipe_init (EV_A); 4921 evpipe_init (EV_A);
3446 4922
3447 EV_FREQUENT_CHECK; 4923 EV_FREQUENT_CHECK;
3448 4924
… …
3452 4928
3453 EV_FREQUENT_CHECK; 4929 EV_FREQUENT_CHECK;
3454} 4930}
3455 4931
3456void 4932void
3457ev_async_stop (EV_P_ ev_async *w) 4933ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
3458{ 4934{
3459 clear_pending (EV_A_ (W)w); 4935 clear_pending (EV_A_ (W)w);
3460 if (expect_false (!ev_is_active (w))) 4936 if (expect_false (!ev_is_active (w)))
3461 return; 4937 return;
3462 4938
… …
3473 4949
3474 EV_FREQUENT_CHECK; 4950 EV_FREQUENT_CHECK;
3475} 4951}
3476 4952
3477void 4953void
3478ev_async_send (EV_P_ ev_async *w) 4954ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
3479{ 4955{
3480 w->sent = 1; 4956 w->sent = 1;
3481 evpipe_write (EV_A_ &async_pending); 4957 evpipe_write (EV_A_ &async_pending);
3482} 4958}
3483#endif 4959#endif
… …
3520 4996
3521 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4997 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3522} 4998}
3523 4999
3524void 5000void
3525ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 5001ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
3526{ 5002{
3527 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5003 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3528 5004
3529 if (expect_false (!once)) 5005 if (expect_false (!once))
3530 { 5006 {
3531 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 5007 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3532 return; 5008 return;
3533 } 5009 }
3534 5010
3535 once->cb = cb; 5011 once->cb = cb;
3536 once->arg = arg; 5012 once->arg = arg;
… …
3551} 5027}
3552 5028
3553/*****************************************************************************/ 5029/*****************************************************************************/
3554 5030
3555#if EV_WALK_ENABLE 5031#if EV_WALK_ENABLE
5032ecb_cold
3556void 5033void
3557ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 5034ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
3558{ 5035{
3559 int i, j; 5036 int i, j;
3560 ev_watcher_list *wl, *wn; 5037 ev_watcher_list *wl, *wn;
3561 5038
3562 if (types & (EV_IO | EV_EMBED)) 5039 if (types & (EV_IO | EV_EMBED))
… …
3605 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 5082 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3606#endif 5083#endif
3607 5084
3608#if EV_IDLE_ENABLE 5085#if EV_IDLE_ENABLE
3609 if (types & EV_IDLE) 5086 if (types & EV_IDLE)
3610 for (j = NUMPRI; i--; ) 5087 for (j = NUMPRI; j--; )
3611 for (i = idlecnt [j]; i--; ) 5088 for (i = idlecnt [j]; i--; )
3612 cb (EV_A_ EV_IDLE, idles [j][i]); 5089 cb (EV_A_ EV_IDLE, idles [j][i]);
3613#endif 5090#endif
3614 5091
3615#if EV_FORK_ENABLE 5092#if EV_FORK_ENABLE
… …
3623 if (types & EV_ASYNC) 5100 if (types & EV_ASYNC)
3624 for (i = asynccnt; i--; ) 5101 for (i = asynccnt; i--; )
3625 cb (EV_A_ EV_ASYNC, asyncs [i]); 5102 cb (EV_A_ EV_ASYNC, asyncs [i]);
3626#endif 5103#endif
3627 5104
5105#if EV_PREPARE_ENABLE
3628 if (types & EV_PREPARE) 5106 if (types & EV_PREPARE)
3629 for (i = preparecnt; i--; ) 5107 for (i = preparecnt; i--; )
3630#if EV_EMBED_ENABLE 5108# if EV_EMBED_ENABLE
3631 if (ev_cb (prepares [i]) != embed_prepare_cb) 5109 if (ev_cb (prepares [i]) != embed_prepare_cb)
3632#endif 5110# endif
3633 cb (EV_A_ EV_PREPARE, prepares [i]); 5111 cb (EV_A_ EV_PREPARE, prepares [i]);
5112#endif
3634 5113
5114#if EV_CHECK_ENABLE
3635 if (types & EV_CHECK) 5115 if (types & EV_CHECK)
3636 for (i = checkcnt; i--; ) 5116 for (i = checkcnt; i--; )
3637 cb (EV_A_ EV_CHECK, checks [i]); 5117 cb (EV_A_ EV_CHECK, checks [i]);
5118#endif
3638 5119
5120#if EV_SIGNAL_ENABLE
3639 if (types & EV_SIGNAL) 5121 if (types & EV_SIGNAL)
3640 for (i = 0; i < EV_NSIG - 1; ++i) 5122 for (i = 0; i < EV_NSIG - 1; ++i)
3641 for (wl = signals [i].head; wl; ) 5123 for (wl = signals [i].head; wl; )
3642 { 5124 {
3643 wn = wl->next; 5125 wn = wl->next;
3644 cb (EV_A_ EV_SIGNAL, wl); 5126 cb (EV_A_ EV_SIGNAL, wl);
3645 wl = wn; 5127 wl = wn;
3646 } 5128 }
5129#endif
3647 5130
5131#if EV_CHILD_ENABLE
3648 if (types & EV_CHILD) 5132 if (types & EV_CHILD)
3649 for (i = EV_PID_HASHSIZE; i--; ) 5133 for (i = (EV_PID_HASHSIZE); i--; )
3650 for (wl = childs [i]; wl; ) 5134 for (wl = childs [i]; wl; )
3651 { 5135 {
3652 wn = wl->next; 5136 wn = wl->next;
3653 cb (EV_A_ EV_CHILD, wl); 5137 cb (EV_A_ EV_CHILD, wl);
3654 wl = wn; 5138 wl = wn;
3655 } 5139 }
5140#endif
3656/* EV_STAT 0x00001000 /* stat data changed */ 5141/* EV_STAT 0x00001000 /* stat data changed */
3657/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 5142/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3658} 5143}
3659#endif 5144#endif
3660 5145
3661#if EV_MULTIPLICITY 5146#if EV_MULTIPLICITY
3662 #include "ev_wrap.h" 5147 #include "ev_wrap.h"
3663#endif 5148#endif
3664 5149
3665#ifdef __cplusplus
3666}
3667#endif
3668

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