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Comparing libev/ev.c (file contents):
Revision 1.334 by root, Tue Mar 9 09:00:59 2010 UTC vs.
Revision 1.487 by root, Mon Oct 29 00:00:21 2018 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009,2010 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007-2018 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
10 * 1. Redistributions of source code must retain the above copyright notice, 10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer. 11 * this list of conditions and the following disclaimer.
12 * 12 *
13 * 2. Redistributions in binary form must reproduce the above copyright 13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the 14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution. 15 * documentation and/or other materials provided with the distribution.
16 * 16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- 18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO 19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- 20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
… …
35 * and other provisions required by the GPL. If you do not delete the 35 * and other provisions required by the GPL. If you do not delete the
36 * provisions above, a recipient may use your version of this file under 36 * provisions above, a recipient may use your version of this file under
37 * either the BSD or the GPL. 37 * either the BSD or the GPL.
38 */ 38 */
39 39
40#ifdef __cplusplus
41extern "C" {
42#endif
43
44/* this big block deduces configuration from config.h */ 40/* this big block deduces configuration from config.h */
45#ifndef EV_STANDALONE 41#ifndef EV_STANDALONE
46# ifdef EV_CONFIG_H 42# ifdef EV_CONFIG_H
47# include EV_CONFIG_H 43# include EV_CONFIG_H
48# else 44# else
49# include "config.h" 45# include "config.h"
46# endif
47
48# if HAVE_FLOOR
49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1
51# endif
50# endif 52# endif
51 53
52# if HAVE_CLOCK_SYSCALL 54# if HAVE_CLOCK_SYSCALL
53# ifndef EV_USE_CLOCK_SYSCALL 55# ifndef EV_USE_CLOCK_SYSCALL
54# define EV_USE_CLOCK_SYSCALL 1 56# define EV_USE_CLOCK_SYSCALL 1
… …
57# endif 59# endif
58# ifndef EV_USE_MONOTONIC 60# ifndef EV_USE_MONOTONIC
59# define EV_USE_MONOTONIC 1 61# define EV_USE_MONOTONIC 1
60# endif 62# endif
61# endif 63# endif
62# elif !defined(EV_USE_CLOCK_SYSCALL) 64# elif !defined EV_USE_CLOCK_SYSCALL
63# define EV_USE_CLOCK_SYSCALL 0 65# define EV_USE_CLOCK_SYSCALL 0
64# endif 66# endif
65 67
66# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
67# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
… …
77# ifndef EV_USE_REALTIME 79# ifndef EV_USE_REALTIME
78# define EV_USE_REALTIME 0 80# define EV_USE_REALTIME 0
79# endif 81# endif
80# endif 82# endif
81 83
84# if HAVE_NANOSLEEP
82# ifndef EV_USE_NANOSLEEP 85# ifndef EV_USE_NANOSLEEP
83# if HAVE_NANOSLEEP
84# define EV_USE_NANOSLEEP 1 86# define EV_USE_NANOSLEEP EV_FEATURE_OS
87# endif
85# else 88# else
89# undef EV_USE_NANOSLEEP
86# define EV_USE_NANOSLEEP 0 90# define EV_USE_NANOSLEEP 0
91# endif
92
93# if HAVE_SELECT && HAVE_SYS_SELECT_H
94# ifndef EV_USE_SELECT
95# define EV_USE_SELECT EV_FEATURE_BACKENDS
87# endif 96# endif
97# else
98# undef EV_USE_SELECT
99# define EV_USE_SELECT 0
88# endif 100# endif
89 101
102# if HAVE_POLL && HAVE_POLL_H
90# ifndef EV_USE_SELECT 103# ifndef EV_USE_POLL
91# if HAVE_SELECT && HAVE_SYS_SELECT_H 104# define EV_USE_POLL EV_FEATURE_BACKENDS
92# define EV_USE_SELECT 1
93# else
94# define EV_USE_SELECT 0
95# endif 105# endif
96# endif
97
98# ifndef EV_USE_POLL
99# if HAVE_POLL && HAVE_POLL_H
100# define EV_USE_POLL 1
101# else 106# else
107# undef EV_USE_POLL
102# define EV_USE_POLL 0 108# define EV_USE_POLL 0
103# endif
104# endif 109# endif
105 110
106# ifndef EV_USE_EPOLL
107# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 111# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
108# define EV_USE_EPOLL 1 112# ifndef EV_USE_EPOLL
109# else 113# define EV_USE_EPOLL EV_FEATURE_BACKENDS
110# define EV_USE_EPOLL 0
111# endif 114# endif
115# else
116# undef EV_USE_EPOLL
117# define EV_USE_EPOLL 0
112# endif 118# endif
113 119
114# ifndef EV_USE_KQUEUE
115# if HAVE_KQUEUE && HAVE_SYS_EVENT_H 120# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
116# define EV_USE_KQUEUE 1 121# ifndef EV_USE_KQUEUE
117# else 122# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
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>
158#include <string.h> 178#include <string.h>
159#include <fcntl.h> 179#include <fcntl.h>
160#include <stddef.h> 180#include <stddef.h>
161 181
… …
173# include EV_H 193# include EV_H
174#else 194#else
175# include "ev.h" 195# include "ev.h"
176#endif 196#endif
177 197
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
207#endif
208
178#ifndef _WIN32 209#ifndef _WIN32
179# include <sys/time.h> 210# include <sys/time.h>
180# include <sys/wait.h> 211# include <sys/wait.h>
181# include <unistd.h> 212# include <unistd.h>
182#else 213#else
183# include <io.h> 214# include <io.h>
184# define WIN32_LEAN_AND_MEAN 215# define WIN32_LEAN_AND_MEAN
216# include <winsock2.h>
185# include <windows.h> 217# include <windows.h>
186# ifndef EV_SELECT_IS_WINSOCKET 218# ifndef EV_SELECT_IS_WINSOCKET
187# define EV_SELECT_IS_WINSOCKET 1 219# define EV_SELECT_IS_WINSOCKET 1
188# endif 220# endif
189# undef EV_AVOID_STDIO 221# undef EV_AVOID_STDIO
190#endif 222#endif
191 223
192/* 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 */
193 225
194/* try to deduce the maximum number of signals on this platform */ 226/* try to deduce the maximum number of signals on this platform */
195#if defined (EV_NSIG) 227#if defined EV_NSIG
196/* use what's provided */ 228/* use what's provided */
197#elif defined (NSIG) 229#elif defined NSIG
198# define EV_NSIG (NSIG) 230# define EV_NSIG (NSIG)
199#elif defined(_NSIG) 231#elif defined _NSIG
200# define EV_NSIG (_NSIG) 232# define EV_NSIG (_NSIG)
201#elif defined (SIGMAX) 233#elif defined SIGMAX
202# define EV_NSIG (SIGMAX+1) 234# define EV_NSIG (SIGMAX+1)
203#elif defined (SIG_MAX) 235#elif defined SIG_MAX
204# define EV_NSIG (SIG_MAX+1) 236# define EV_NSIG (SIG_MAX+1)
205#elif defined (_SIG_MAX) 237#elif defined _SIG_MAX
206# define EV_NSIG (_SIG_MAX+1) 238# define EV_NSIG (_SIG_MAX+1)
207#elif defined (MAXSIG) 239#elif defined MAXSIG
208# define EV_NSIG (MAXSIG+1) 240# define EV_NSIG (MAXSIG+1)
209#elif defined (MAX_SIG) 241#elif defined MAX_SIG
210# define EV_NSIG (MAX_SIG+1) 242# define EV_NSIG (MAX_SIG+1)
211#elif defined (SIGARRAYSIZE) 243#elif defined SIGARRAYSIZE
212# define EV_NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */ 244# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
213#elif defined (_sys_nsig) 245#elif defined _sys_nsig
214# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 246# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
215#else 247#else
216# error "unable to find value for NSIG, please report" 248# define EV_NSIG (8 * sizeof (sigset_t) + 1)
217/* to make it compile regardless, just remove the above line */ 249#endif
218# define EV_NSIG 65 250
251#ifndef EV_USE_FLOOR
252# define EV_USE_FLOOR 0
219#endif 253#endif
220 254
221#ifndef EV_USE_CLOCK_SYSCALL 255#ifndef EV_USE_CLOCK_SYSCALL
222# if __linux && __GLIBC__ >= 2 256# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
223# define EV_USE_CLOCK_SYSCALL 1 257# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
224# else 258# else
225# define EV_USE_CLOCK_SYSCALL 0 259# define EV_USE_CLOCK_SYSCALL 0
226# endif 260# endif
227#endif 261#endif
228 262
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
229#ifndef EV_USE_MONOTONIC 272#ifndef EV_USE_MONOTONIC
230# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 273# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
231# define EV_USE_MONOTONIC 1 274# define EV_USE_MONOTONIC EV_FEATURE_OS
232# else 275# else
233# define EV_USE_MONOTONIC 0 276# define EV_USE_MONOTONIC 0
234# endif 277# endif
235#endif 278#endif
236 279
… …
238# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 281# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
239#endif 282#endif
240 283
241#ifndef EV_USE_NANOSLEEP 284#ifndef EV_USE_NANOSLEEP
242# if _POSIX_C_SOURCE >= 199309L 285# if _POSIX_C_SOURCE >= 199309L
243# define EV_USE_NANOSLEEP 1 286# define EV_USE_NANOSLEEP EV_FEATURE_OS
244# else 287# else
245# define EV_USE_NANOSLEEP 0 288# define EV_USE_NANOSLEEP 0
246# endif 289# endif
247#endif 290#endif
248 291
249#ifndef EV_USE_SELECT 292#ifndef EV_USE_SELECT
250# define EV_USE_SELECT 1 293# define EV_USE_SELECT EV_FEATURE_BACKENDS
251#endif 294#endif
252 295
253#ifndef EV_USE_POLL 296#ifndef EV_USE_POLL
254# ifdef _WIN32 297# ifdef _WIN32
255# define EV_USE_POLL 0 298# define EV_USE_POLL 0
256# else 299# else
257# define EV_USE_POLL 1 300# define EV_USE_POLL EV_FEATURE_BACKENDS
258# endif 301# endif
259#endif 302#endif
260 303
261#ifndef EV_USE_EPOLL 304#ifndef EV_USE_EPOLL
262# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 305# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
263# define EV_USE_EPOLL 1 306# define EV_USE_EPOLL EV_FEATURE_BACKENDS
264# else 307# else
265# define EV_USE_EPOLL 0 308# define EV_USE_EPOLL 0
266# endif 309# endif
267#endif 310#endif
268 311
… …
274# define EV_USE_PORT 0 317# define EV_USE_PORT 0
275#endif 318#endif
276 319
277#ifndef EV_USE_INOTIFY 320#ifndef EV_USE_INOTIFY
278# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 321# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
279# define EV_USE_INOTIFY 1 322# define EV_USE_INOTIFY EV_FEATURE_OS
280# else 323# else
281# define EV_USE_INOTIFY 0 324# define EV_USE_INOTIFY 0
282# endif 325# endif
283#endif 326#endif
284 327
285#ifndef EV_PID_HASHSIZE 328#ifndef EV_PID_HASHSIZE
286# if EV_MINIMAL 329# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
287# define EV_PID_HASHSIZE 1
288# else
289# define EV_PID_HASHSIZE 16
290# endif
291#endif 330#endif
292 331
293#ifndef EV_INOTIFY_HASHSIZE 332#ifndef EV_INOTIFY_HASHSIZE
294# if EV_MINIMAL 333# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
295# define EV_INOTIFY_HASHSIZE 1
296# else
297# define EV_INOTIFY_HASHSIZE 16
298# endif
299#endif 334#endif
300 335
301#ifndef EV_USE_EVENTFD 336#ifndef EV_USE_EVENTFD
302# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 337# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
303# define EV_USE_EVENTFD 1 338# define EV_USE_EVENTFD EV_FEATURE_OS
304# else 339# else
305# define EV_USE_EVENTFD 0 340# define EV_USE_EVENTFD 0
306# endif 341# endif
307#endif 342#endif
308 343
309#ifndef EV_USE_SIGNALFD 344#ifndef EV_USE_SIGNALFD
310# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 345# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
311# define EV_USE_SIGNALFD 1 346# define EV_USE_SIGNALFD EV_FEATURE_OS
312# else 347# else
313# define EV_USE_SIGNALFD 0 348# define EV_USE_SIGNALFD 0
314# endif 349# endif
315#endif 350#endif
316 351
… …
319# define EV_USE_4HEAP 1 354# define EV_USE_4HEAP 1
320# define EV_HEAP_CACHE_AT 1 355# define EV_HEAP_CACHE_AT 1
321#endif 356#endif
322 357
323#ifndef EV_VERIFY 358#ifndef EV_VERIFY
324# define EV_VERIFY !EV_MINIMAL 359# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
325#endif 360#endif
326 361
327#ifndef EV_USE_4HEAP 362#ifndef EV_USE_4HEAP
328# define EV_USE_4HEAP !EV_MINIMAL 363# define EV_USE_4HEAP EV_FEATURE_DATA
329#endif 364#endif
330 365
331#ifndef EV_HEAP_CACHE_AT 366#ifndef EV_HEAP_CACHE_AT
332# 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
333#endif 384#endif
334 385
335/* 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, */
336/* which makes programs even slower. might work on other unices, too. */ 387/* which makes programs even slower. might work on other unices, too. */
337#if EV_USE_CLOCK_SYSCALL 388#if EV_USE_CLOCK_SYSCALL
338# include <syscall.h> 389# include <sys/syscall.h>
339# ifdef SYS_clock_gettime 390# ifdef SYS_clock_gettime
340# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 391# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
341# undef EV_USE_MONOTONIC 392# undef EV_USE_MONOTONIC
342# define EV_USE_MONOTONIC 1 393# define EV_USE_MONOTONIC 1
343# else 394# else
… …
346# endif 397# endif
347#endif 398#endif
348 399
349/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 400/* this block fixes any misconfiguration where we know we run into trouble otherwise */
350 401
351#ifdef _AIX
352/* AIX has a completely broken poll.h header */
353# undef EV_USE_POLL
354# define EV_USE_POLL 0
355#endif
356
357#ifndef CLOCK_MONOTONIC 402#ifndef CLOCK_MONOTONIC
358# undef EV_USE_MONOTONIC 403# undef EV_USE_MONOTONIC
359# define EV_USE_MONOTONIC 0 404# define EV_USE_MONOTONIC 0
360#endif 405#endif
361 406
… …
368# undef EV_USE_INOTIFY 413# undef EV_USE_INOTIFY
369# define EV_USE_INOTIFY 0 414# define EV_USE_INOTIFY 0
370#endif 415#endif
371 416
372#if !EV_USE_NANOSLEEP 417#if !EV_USE_NANOSLEEP
373# ifndef _WIN32 418/* hp-ux has it in sys/time.h, which we unconditionally include above */
419# if !defined _WIN32 && !defined __hpux
374# include <sys/select.h> 420# include <sys/select.h>
375# endif 421# endif
376#endif 422#endif
377 423
378#if EV_USE_INOTIFY 424#if EV_USE_INOTIFY
379# include <sys/utsname.h>
380# include <sys/statfs.h> 425# include <sys/statfs.h>
381# include <sys/inotify.h> 426# include <sys/inotify.h>
382/* 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 */
383# ifndef IN_DONT_FOLLOW 428# ifndef IN_DONT_FOLLOW
384# undef EV_USE_INOTIFY 429# undef EV_USE_INOTIFY
385# define EV_USE_INOTIFY 0 430# define EV_USE_INOTIFY 0
386# endif 431# endif
387#endif
388
389#if EV_SELECT_IS_WINSOCKET
390# include <winsock.h>
391#endif 432#endif
392 433
393#if EV_USE_EVENTFD 434#if EV_USE_EVENTFD
394/* 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 */
395# include <stdint.h> 436# include <stdint.h>
… …
401# define EFD_CLOEXEC O_CLOEXEC 442# define EFD_CLOEXEC O_CLOEXEC
402# else 443# else
403# define EFD_CLOEXEC 02000000 444# define EFD_CLOEXEC 02000000
404# endif 445# endif
405# endif 446# endif
406# ifdef __cplusplus
407extern "C" {
408# endif
409int (eventfd) (unsigned int initval, int flags); 447EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
410# ifdef __cplusplus
411}
412# endif
413#endif 448#endif
414 449
415#if EV_USE_SIGNALFD 450#if EV_USE_SIGNALFD
416/* 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 */
417# include <stdint.h> 452# include <stdint.h>
… …
423# define SFD_CLOEXEC O_CLOEXEC 458# define SFD_CLOEXEC O_CLOEXEC
424# else 459# else
425# define SFD_CLOEXEC 02000000 460# define SFD_CLOEXEC 02000000
426# endif 461# endif
427# endif 462# endif
428# ifdef __cplusplus
429extern "C" {
430# endif
431int signalfd (int fd, const sigset_t *mask, int flags); 463EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
432 464
433struct signalfd_siginfo 465struct signalfd_siginfo
434{ 466{
435 uint32_t ssi_signo; 467 uint32_t ssi_signo;
436 char pad[128 - sizeof (uint32_t)]; 468 char pad[128 - sizeof (uint32_t)];
437}; 469};
438# ifdef __cplusplus
439}
440# endif 470#endif
441#endif
442
443 471
444/**/ 472/**/
445 473
446#if EV_VERIFY >= 3 474#if EV_VERIFY >= 3
447# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 475# define EV_FREQUENT_CHECK ev_verify (EV_A)
448#else 476#else
449# define EV_FREQUENT_CHECK do { } while (0) 477# define EV_FREQUENT_CHECK do { } while (0)
450#endif 478#endif
451 479
452/* 480/*
453 * This is used to avoid floating point rounding problems. 481 * This is used to work around floating point rounding problems.
454 * It is added to ev_rt_now when scheduling periodics
455 * to ensure progress, time-wise, even when rounding
456 * errors are against us.
457 * This value is good at least till the year 4000. 482 * This value is good at least till the year 4000.
458 * Better solutions welcome.
459 */ 483 */
460#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 */
461 486
462#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) */
463#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) */
464 489
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;
465#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)
466# define expect(expr,value) __builtin_expect ((expr),(value)) 842 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
467# define noinline __attribute__ ((noinline))
468#else 843#else
469# define expect(expr,value) (expr) 844 #define ecb_expect(expr,value) (expr)
470# define noinline
471# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
472# define inline
473# endif 845#endif
474#endif
475 846
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. */
476#define expect_false(expr) expect ((expr) != 0, 0) 911#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
477#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
478#define inline_size static inline 1529#define inline_size ecb_inline
479 1530
480#if EV_MINIMAL 1531#if EV_FEATURE_CODE
481# define inline_speed static noinline
482#else
483# define inline_speed static inline 1532# define inline_speed ecb_inline
1533#else
1534# define inline_speed noinline static
484#endif 1535#endif
485 1536
486#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1537#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
487 1538
488#if EV_MINPRI == EV_MAXPRI 1539#if EV_MINPRI == EV_MAXPRI
… …
501#define ev_active(w) ((W)(w))->active 1552#define ev_active(w) ((W)(w))->active
502#define ev_at(w) ((WT)(w))->at 1553#define ev_at(w) ((WT)(w))->at
503 1554
504#if EV_USE_REALTIME 1555#if EV_USE_REALTIME
505/* 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 */
506/* giving it a reasonably high chance of working on typical architetcures */ 1557/* giving it a reasonably high chance of working on typical architectures */
507static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 1558static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
508#endif 1559#endif
509 1560
510#if EV_USE_MONOTONIC 1561#if EV_USE_MONOTONIC
511static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 1562static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
… …
525# include "ev_win32.c" 1576# include "ev_win32.c"
526#endif 1577#endif
527 1578
528/*****************************************************************************/ 1579/*****************************************************************************/
529 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
530#if EV_AVOID_STDIO 1673#if EV_AVOID_STDIO
531static void noinline 1674noinline ecb_cold
1675static void
532ev_printerr (const char *msg) 1676ev_printerr (const char *msg)
533{ 1677{
534 write (STDERR_FILENO, msg, strlen (msg)); 1678 write (STDERR_FILENO, msg, strlen (msg));
535} 1679}
536#endif 1680#endif
537 1681
538static void (*syserr_cb)(const char *msg); 1682static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
539 1683
1684ecb_cold
540void 1685void
541ev_set_syserr_cb (void (*cb)(const char *msg)) 1686ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
542{ 1687{
543 syserr_cb = cb; 1688 syserr_cb = cb;
544} 1689}
545 1690
546static void noinline 1691noinline ecb_cold
1692static void
547ev_syserr (const char *msg) 1693ev_syserr (const char *msg)
548{ 1694{
549 if (!msg) 1695 if (!msg)
550 msg = "(libev) system error"; 1696 msg = "(libev) system error";
551 1697
552 if (syserr_cb) 1698 if (syserr_cb)
553 syserr_cb (msg); 1699 syserr_cb (msg);
554 else 1700 else
555 { 1701 {
556#if EV_AVOID_STDIO 1702#if EV_AVOID_STDIO
557 const char *err = strerror (errno);
558
559 ev_printerr (msg); 1703 ev_printerr (msg);
560 ev_printerr (": "); 1704 ev_printerr (": ");
561 ev_printerr (err); 1705 ev_printerr (strerror (errno));
562 ev_printerr ("\n"); 1706 ev_printerr ("\n");
563#else 1707#else
564 perror (msg); 1708 perror (msg);
565#endif 1709#endif
566 abort (); 1710 abort ();
567 } 1711 }
568} 1712}
569 1713
570static void * 1714static void *
571ev_realloc_emul (void *ptr, long size) 1715ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
572{ 1716{
573#if __GLIBC__
574 return realloc (ptr, size);
575#else
576 /* some systems, notably openbsd and darwin, fail to properly 1717 /* some systems, notably openbsd and darwin, fail to properly
577 * 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
578 * 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.
579 */ 1722 */
580 1723
581 if (size) 1724 if (size)
582 return realloc (ptr, size); 1725 return realloc (ptr, size);
583 1726
584 free (ptr); 1727 free (ptr);
585 return 0; 1728 return 0;
586#endif
587} 1729}
588 1730
589static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1731static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
590 1732
1733ecb_cold
591void 1734void
592ev_set_allocator (void *(*cb)(void *ptr, long size)) 1735ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
593{ 1736{
594 alloc = cb; 1737 alloc = cb;
595} 1738}
596 1739
597inline_speed void * 1740inline_speed void *
… …
600 ptr = alloc (ptr, size); 1743 ptr = alloc (ptr, size);
601 1744
602 if (!ptr && size) 1745 if (!ptr && size)
603 { 1746 {
604#if EV_AVOID_STDIO 1747#if EV_AVOID_STDIO
605 ev_printerr ("libev: memory allocation failed, aborting.\n"); 1748 ev_printerr ("(libev) memory allocation failed, aborting.\n");
606#else 1749#else
607 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1750 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
608#endif 1751#endif
609 abort (); 1752 abort ();
610 } 1753 }
611 1754
612 return ptr; 1755 return ptr;
… …
629 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 */
630 unsigned char unused; 1773 unsigned char unused;
631#if EV_USE_EPOLL 1774#if EV_USE_EPOLL
632 unsigned int egen; /* generation counter to counter epoll bugs */ 1775 unsigned int egen; /* generation counter to counter epoll bugs */
633#endif 1776#endif
634#if EV_SELECT_IS_WINSOCKET 1777#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
635 SOCKET handle; 1778 SOCKET handle;
1779#endif
1780#if EV_USE_IOCP
1781 OVERLAPPED or, ow;
636#endif 1782#endif
637} ANFD; 1783} ANFD;
638 1784
639/* stores the pending event set for a given watcher */ 1785/* stores the pending event set for a given watcher */
640typedef struct 1786typedef struct
… …
682 #undef VAR 1828 #undef VAR
683 }; 1829 };
684 #include "ev_wrap.h" 1830 #include "ev_wrap.h"
685 1831
686 static struct ev_loop default_loop_struct; 1832 static struct ev_loop default_loop_struct;
687 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 */
688 1834
689#else 1835#else
690 1836
691 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 */
692 #define VAR(name,decl) static decl; 1838 #define VAR(name,decl) static decl;
693 #include "ev_vars.h" 1839 #include "ev_vars.h"
694 #undef VAR 1840 #undef VAR
695 1841
696 static int ev_default_loop_ptr; 1842 static int ev_default_loop_ptr;
697 1843
698#endif 1844#endif
699 1845
700#if EV_MINIMAL < 2 1846#if EV_FEATURE_API
701# 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)
702# 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)
703# define EV_INVOKE_PENDING invoke_cb (EV_A) 1849# define EV_INVOKE_PENDING invoke_cb (EV_A)
704#else 1850#else
705# define EV_RELEASE_CB (void)0 1851# define EV_RELEASE_CB (void)0
706# define EV_ACQUIRE_CB (void)0 1852# define EV_ACQUIRE_CB (void)0
707# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1853# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
708#endif 1854#endif
709 1855
710#define EVUNLOOP_RECURSE 0x80 1856#define EVBREAK_RECURSE 0x80
711 1857
712/*****************************************************************************/ 1858/*****************************************************************************/
713 1859
714#ifndef EV_HAVE_EV_TIME 1860#ifndef EV_HAVE_EV_TIME
715ev_tstamp 1861ev_tstamp
716ev_time (void) 1862ev_time (void) EV_NOEXCEPT
717{ 1863{
718#if EV_USE_REALTIME 1864#if EV_USE_REALTIME
719 if (expect_true (have_realtime)) 1865 if (expect_true (have_realtime))
720 { 1866 {
721 struct timespec ts; 1867 struct timespec ts;
… …
745 return ev_time (); 1891 return ev_time ();
746} 1892}
747 1893
748#if EV_MULTIPLICITY 1894#if EV_MULTIPLICITY
749ev_tstamp 1895ev_tstamp
750ev_now (EV_P) 1896ev_now (EV_P) EV_NOEXCEPT
751{ 1897{
752 return ev_rt_now; 1898 return ev_rt_now;
753} 1899}
754#endif 1900#endif
755 1901
756void 1902void
757ev_sleep (ev_tstamp delay) 1903ev_sleep (ev_tstamp delay) EV_NOEXCEPT
758{ 1904{
759 if (delay > 0.) 1905 if (delay > 0.)
760 { 1906 {
761#if EV_USE_NANOSLEEP 1907#if EV_USE_NANOSLEEP
762 struct timespec ts; 1908 struct timespec ts;
763 1909
764 ts.tv_sec = (time_t)delay; 1910 EV_TS_SET (ts, delay);
765 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
766
767 nanosleep (&ts, 0); 1911 nanosleep (&ts, 0);
768#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) */
769 Sleep ((unsigned long)(delay * 1e3)); 1915 Sleep ((unsigned long)(delay * 1e3));
770#else 1916#else
771 struct timeval tv; 1917 struct timeval tv;
772
773 tv.tv_sec = (time_t)delay;
774 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
775 1918
776 /* 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 */
777 /* something not guaranteed by newer posix versions, but guaranteed */ 1920 /* something not guaranteed by newer posix versions, but guaranteed */
778 /* by older ones */ 1921 /* by older ones */
1922 EV_TV_SET (tv, delay);
779 select (0, 0, 0, 0, &tv); 1923 select (0, 0, 0, 0, &tv);
780#endif 1924#endif
781 } 1925 }
782} 1926}
783 1927
784/*****************************************************************************/ 1928/*****************************************************************************/
785 1929
786#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 */
787 1931
788/* find a suitable new size for the given array, */ 1932/* find a suitable new size for the given array, */
789/* hopefully by rounding to a ncie-to-malloc size */ 1933/* hopefully by rounding to a nice-to-malloc size */
790inline_size int 1934inline_size int
791array_nextsize (int elem, int cur, int cnt) 1935array_nextsize (int elem, int cur, int cnt)
792{ 1936{
793 int ncur = cur + 1; 1937 int ncur = cur + 1;
794 1938
795 do 1939 do
796 ncur <<= 1; 1940 ncur <<= 1;
797 while (cnt > ncur); 1941 while (cnt > ncur);
798 1942
799 /* 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 */
800 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1944 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
801 { 1945 {
802 ncur *= elem; 1946 ncur *= elem;
803 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);
804 ncur = ncur - sizeof (void *) * 4; 1948 ncur = ncur - sizeof (void *) * 4;
… …
806 } 1950 }
807 1951
808 return ncur; 1952 return ncur;
809} 1953}
810 1954
811static noinline void * 1955noinline ecb_cold
1956static void *
812array_realloc (int elem, void *base, int *cur, int cnt) 1957array_realloc (int elem, void *base, int *cur, int cnt)
813{ 1958{
814 *cur = array_nextsize (elem, *cur, cnt); 1959 *cur = array_nextsize (elem, *cur, cnt);
815 return ev_realloc (base, elem * *cur); 1960 return ev_realloc (base, elem * *cur);
816} 1961}
… …
819 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1964 memset ((void *)(base), 0, sizeof (*(base)) * (count))
820 1965
821#define array_needsize(type,base,cur,cnt,init) \ 1966#define array_needsize(type,base,cur,cnt,init) \
822 if (expect_false ((cnt) > (cur))) \ 1967 if (expect_false ((cnt) > (cur))) \
823 { \ 1968 { \
824 int ocur_ = (cur); \ 1969 ecb_unused int ocur_ = (cur); \
825 (base) = (type *)array_realloc \ 1970 (base) = (type *)array_realloc \
826 (sizeof (type), (base), &(cur), (cnt)); \ 1971 (sizeof (type), (base), &(cur), (cnt)); \
827 init ((base) + (ocur_), (cur) - ocur_); \ 1972 init ((base) + (ocur_), (cur) - ocur_); \
828 } 1973 }
829 1974
… …
841 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
842 1987
843/*****************************************************************************/ 1988/*****************************************************************************/
844 1989
845/* dummy callback for pending events */ 1990/* dummy callback for pending events */
846static void noinline 1991noinline
1992static void
847pendingcb (EV_P_ ev_prepare *w, int revents) 1993pendingcb (EV_P_ ev_prepare *w, int revents)
848{ 1994{
849} 1995}
850 1996
851void noinline 1997noinline
1998void
852ev_feed_event (EV_P_ void *w, int revents) 1999ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
853{ 2000{
854 W w_ = (W)w; 2001 W w_ = (W)w;
855 int pri = ABSPRI (w_); 2002 int pri = ABSPRI (w_);
856 2003
857 if (expect_false (w_->pending)) 2004 if (expect_false (w_->pending))
… …
861 w_->pending = ++pendingcnt [pri]; 2008 w_->pending = ++pendingcnt [pri];
862 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2009 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
863 pendings [pri][w_->pending - 1].w = w_; 2010 pendings [pri][w_->pending - 1].w = w_;
864 pendings [pri][w_->pending - 1].events = revents; 2011 pendings [pri][w_->pending - 1].events = revents;
865 } 2012 }
2013
2014 pendingpri = NUMPRI - 1;
866} 2015}
867 2016
868inline_speed void 2017inline_speed void
869feed_reverse (EV_P_ W w) 2018feed_reverse (EV_P_ W w)
870{ 2019{
… …
890} 2039}
891 2040
892/*****************************************************************************/ 2041/*****************************************************************************/
893 2042
894inline_speed void 2043inline_speed void
895fd_event_nc (EV_P_ int fd, int revents) 2044fd_event_nocheck (EV_P_ int fd, int revents)
896{ 2045{
897 ANFD *anfd = anfds + fd; 2046 ANFD *anfd = anfds + fd;
898 ev_io *w; 2047 ev_io *w;
899 2048
900 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)
… …
912fd_event (EV_P_ int fd, int revents) 2061fd_event (EV_P_ int fd, int revents)
913{ 2062{
914 ANFD *anfd = anfds + fd; 2063 ANFD *anfd = anfds + fd;
915 2064
916 if (expect_true (!anfd->reify)) 2065 if (expect_true (!anfd->reify))
917 fd_event_nc (EV_A_ fd, revents); 2066 fd_event_nocheck (EV_A_ fd, revents);
918} 2067}
919 2068
920void 2069void
921ev_feed_fd_event (EV_P_ int fd, int revents) 2070ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
922{ 2071{
923 if (fd >= 0 && fd < anfdmax) 2072 if (fd >= 0 && fd < anfdmax)
924 fd_event_nc (EV_A_ fd, revents); 2073 fd_event_nocheck (EV_A_ fd, revents);
925} 2074}
926 2075
927/* make sure the external fd watch events are in-sync */ 2076/* make sure the external fd watch events are in-sync */
928/* with the kernel/libev internal state */ 2077/* with the kernel/libev internal state */
929inline_size void 2078inline_size void
930fd_reify (EV_P) 2079fd_reify (EV_P)
931{ 2080{
932 int i; 2081 int i;
933 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
934 for (i = 0; i < fdchangecnt; ++i) 2108 for (i = 0; i < fdchangecnt; ++i)
935 { 2109 {
936 int fd = fdchanges [i]; 2110 int fd = fdchanges [i];
937 ANFD *anfd = anfds + fd; 2111 ANFD *anfd = anfds + fd;
938 ev_io *w; 2112 ev_io *w;
939 2113
940 unsigned char events = 0; 2114 unsigned char o_events = anfd->events;
2115 unsigned char o_reify = anfd->reify;
941 2116
942 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2117 anfd->reify = 0;
943 events |= (unsigned char)w->events;
944 2118
945#if EV_SELECT_IS_WINSOCKET 2119 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
946 if (events)
947 { 2120 {
948 unsigned long arg; 2121 anfd->events = 0;
949 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 2122
950 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 |= */
951 } 2128 }
952#endif
953 2129
954 { 2130 if (o_reify & EV__IOFDSET)
955 unsigned char o_events = anfd->events;
956 unsigned char o_reify = anfd->reify;
957
958 anfd->reify = 0;
959 anfd->events = events;
960
961 if (o_events != events || o_reify & EV__IOFDSET)
962 backend_modify (EV_A_ fd, o_events, events); 2131 backend_modify (EV_A_ fd, o_events, anfd->events);
963 }
964 } 2132 }
965 2133
966 fdchangecnt = 0; 2134 fdchangecnt = 0;
967} 2135}
968 2136
969/* something about the given fd changed */ 2137/* something about the given fd changed */
970inline_size void 2138inline_size
2139void
971fd_change (EV_P_ int fd, int flags) 2140fd_change (EV_P_ int fd, int flags)
972{ 2141{
973 unsigned char reify = anfds [fd].reify; 2142 unsigned char reify = anfds [fd].reify;
974 anfds [fd].reify |= flags; 2143 anfds [fd].reify |= flags;
975 2144
… …
980 fdchanges [fdchangecnt - 1] = fd; 2149 fdchanges [fdchangecnt - 1] = fd;
981 } 2150 }
982} 2151}
983 2152
984/* 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 */
985inline_speed void 2154inline_speed ecb_cold void
986fd_kill (EV_P_ int fd) 2155fd_kill (EV_P_ int fd)
987{ 2156{
988 ev_io *w; 2157 ev_io *w;
989 2158
990 while ((w = (ev_io *)anfds [fd].head)) 2159 while ((w = (ev_io *)anfds [fd].head))
… …
992 ev_io_stop (EV_A_ w); 2161 ev_io_stop (EV_A_ w);
993 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);
994 } 2163 }
995} 2164}
996 2165
997/* check whether the given fd is atcually valid, for error recovery */ 2166/* check whether the given fd is actually valid, for error recovery */
998inline_size int 2167inline_size ecb_cold int
999fd_valid (int fd) 2168fd_valid (int fd)
1000{ 2169{
1001#ifdef _WIN32 2170#ifdef _WIN32
1002 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2171 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1003#else 2172#else
1004 return fcntl (fd, F_GETFD) != -1; 2173 return fcntl (fd, F_GETFD) != -1;
1005#endif 2174#endif
1006} 2175}
1007 2176
1008/* called on EBADF to verify fds */ 2177/* called on EBADF to verify fds */
1009static void noinline 2178noinline ecb_cold
2179static void
1010fd_ebadf (EV_P) 2180fd_ebadf (EV_P)
1011{ 2181{
1012 int fd; 2182 int fd;
1013 2183
1014 for (fd = 0; fd < anfdmax; ++fd) 2184 for (fd = 0; fd < anfdmax; ++fd)
… …
1016 if (!fd_valid (fd) && errno == EBADF) 2186 if (!fd_valid (fd) && errno == EBADF)
1017 fd_kill (EV_A_ fd); 2187 fd_kill (EV_A_ fd);
1018} 2188}
1019 2189
1020/* 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 */
1021static void noinline 2191noinline ecb_cold
2192static void
1022fd_enomem (EV_P) 2193fd_enomem (EV_P)
1023{ 2194{
1024 int fd; 2195 int fd;
1025 2196
1026 for (fd = anfdmax; fd--; ) 2197 for (fd = anfdmax; fd--; )
… …
1030 break; 2201 break;
1031 } 2202 }
1032} 2203}
1033 2204
1034/* 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 */
1035static void noinline 2206noinline
2207static void
1036fd_rearm_all (EV_P) 2208fd_rearm_all (EV_P)
1037{ 2209{
1038 int fd; 2210 int fd;
1039 2211
1040 for (fd = 0; fd < anfdmax; ++fd) 2212 for (fd = 0; fd < anfdmax; ++fd)
… …
1044 anfds [fd].emask = 0; 2216 anfds [fd].emask = 0;
1045 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); 2217 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
1046 } 2218 }
1047} 2219}
1048 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
1049/*****************************************************************************/ 2235/*****************************************************************************/
1050 2236
1051/* 2237/*
1052 * 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
1053 * 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
1054 * the branching factor of the d-tree. 2240 * the branching factor of the d-tree.
1055 */ 2241 */
1056 2242
1057/* 2243/*
… …
1205 2391
1206static ANSIG signals [EV_NSIG - 1]; 2392static ANSIG signals [EV_NSIG - 1];
1207 2393
1208/*****************************************************************************/ 2394/*****************************************************************************/
1209 2395
1210/* used to prepare libev internal fd's */ 2396#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1211/* 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
1212inline_speed void 2444inline_speed void
1213fd_intern (int fd) 2445evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1214{ 2446{
1215#ifdef _WIN32 2447 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1216 unsigned long arg = 1;
1217 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1218#else
1219 fcntl (fd, F_SETFD, FD_CLOEXEC);
1220 fcntl (fd, F_SETFL, O_NONBLOCK);
1221#endif
1222}
1223 2448
1224static void noinline 2449 if (expect_true (*flag))
1225evpipe_init (EV_P) 2450 return;
1226{ 2451
1227 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)
1228 { 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
1229#if EV_USE_EVENTFD 2468#if EV_USE_EVENTFD
1230 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2469 if (evpipe [0] < 0)
1231 if (evfd < 0 && errno == EINVAL)
1232 evfd = eventfd (0, 0);
1233
1234 if (evfd >= 0)
1235 { 2470 {
1236 evpipe [0] = -1; 2471 uint64_t counter = 1;
1237 fd_intern (evfd); /* doing it twice doesn't hurt */ 2472 write (evpipe [1], &counter, sizeof (uint64_t));
1238 ev_io_set (&pipe_w, evfd, EV_READ);
1239 } 2473 }
1240 else 2474 else
1241#endif 2475#endif
1242 { 2476 {
1243 while (pipe (evpipe)) 2477#ifdef _WIN32
1244 ev_syserr ("(libev) error creating signal/async pipe"); 2478 WSABUF buf;
1245 2479 DWORD sent;
1246 fd_intern (evpipe [0]); 2480 buf.buf = (char *)&buf;
1247 fd_intern (evpipe [1]); 2481 buf.len = 1;
1248 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
1249 } 2486 }
1250
1251 ev_io_start (EV_A_ &pipe_w);
1252 ev_unref (EV_A); /* watcher should not keep loop alive */
1253 }
1254}
1255
1256inline_size void
1257evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1258{
1259 if (!*flag)
1260 {
1261 int old_errno = errno; /* save errno because write might clobber it */
1262
1263 *flag = 1;
1264
1265#if EV_USE_EVENTFD
1266 if (evfd >= 0)
1267 {
1268 uint64_t counter = 1;
1269 write (evfd, &counter, sizeof (uint64_t));
1270 }
1271 else
1272#endif
1273 write (evpipe [1], &old_errno, 1);
1274 2487
1275 errno = old_errno; 2488 errno = old_errno;
1276 } 2489 }
1277} 2490}
1278 2491
… …
1281static void 2494static void
1282pipecb (EV_P_ ev_io *iow, int revents) 2495pipecb (EV_P_ ev_io *iow, int revents)
1283{ 2496{
1284 int i; 2497 int i;
1285 2498
2499 if (revents & EV_READ)
2500 {
1286#if EV_USE_EVENTFD 2501#if EV_USE_EVENTFD
1287 if (evfd >= 0) 2502 if (evpipe [0] < 0)
1288 { 2503 {
1289 uint64_t counter; 2504 uint64_t counter;
1290 read (evfd, &counter, sizeof (uint64_t)); 2505 read (evpipe [1], &counter, sizeof (uint64_t));
1291 } 2506 }
1292 else 2507 else
1293#endif 2508#endif
1294 { 2509 {
1295 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
1296 read (evpipe [0], &dummy, 1); 2519 read (evpipe [0], &dummy, sizeof (dummy));
2520#endif
2521 }
1297 } 2522 }
1298 2523
2524 pipe_write_skipped = 0;
2525
2526 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2527
2528#if EV_SIGNAL_ENABLE
1299 if (sig_pending) 2529 if (sig_pending)
1300 { 2530 {
1301 sig_pending = 0; 2531 sig_pending = 0;
2532
2533 ECB_MEMORY_FENCE;
1302 2534
1303 for (i = EV_NSIG - 1; i--; ) 2535 for (i = EV_NSIG - 1; i--; )
1304 if (expect_false (signals [i].pending)) 2536 if (expect_false (signals [i].pending))
1305 ev_feed_signal_event (EV_A_ i + 1); 2537 ev_feed_signal_event (EV_A_ i + 1);
1306 } 2538 }
2539#endif
1307 2540
1308#if EV_ASYNC_ENABLE 2541#if EV_ASYNC_ENABLE
1309 if (async_pending) 2542 if (async_pending)
1310 { 2543 {
1311 async_pending = 0; 2544 async_pending = 0;
2545
2546 ECB_MEMORY_FENCE;
1312 2547
1313 for (i = asynccnt; i--; ) 2548 for (i = asynccnt; i--; )
1314 if (asyncs [i]->sent) 2549 if (asyncs [i]->sent)
1315 { 2550 {
1316 asyncs [i]->sent = 0; 2551 asyncs [i]->sent = 0;
2552 ECB_MEMORY_FENCE_RELEASE;
1317 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2553 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1318 } 2554 }
1319 } 2555 }
1320#endif 2556#endif
1321} 2557}
1322 2558
1323/*****************************************************************************/ 2559/*****************************************************************************/
1324 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
1325static void 2577static void
1326ev_sighandler (int signum) 2578ev_sighandler (int signum)
1327{ 2579{
1328#if EV_MULTIPLICITY
1329 EV_P = signals [signum - 1].loop;
1330#endif
1331
1332#ifdef _WIN32 2580#ifdef _WIN32
1333 signal (signum, ev_sighandler); 2581 signal (signum, ev_sighandler);
1334#endif 2582#endif
1335 2583
1336 signals [signum - 1].pending = 1; 2584 ev_feed_signal (signum);
1337 evpipe_write (EV_A_ &sig_pending);
1338} 2585}
1339 2586
1340void noinline 2587noinline
2588void
1341ev_feed_signal_event (EV_P_ int signum) 2589ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
1342{ 2590{
1343 WL w; 2591 WL w;
1344 2592
1345 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2593 if (expect_false (signum <= 0 || signum >= EV_NSIG))
1346 return; 2594 return;
1347 2595
1348 --signum; 2596 --signum;
1349 2597
1350#if EV_MULTIPLICITY 2598#if EV_MULTIPLICITY
… …
1354 if (expect_false (signals [signum].loop != EV_A)) 2602 if (expect_false (signals [signum].loop != EV_A))
1355 return; 2603 return;
1356#endif 2604#endif
1357 2605
1358 signals [signum].pending = 0; 2606 signals [signum].pending = 0;
2607 ECB_MEMORY_FENCE_RELEASE;
1359 2608
1360 for (w = signals [signum].head; w; w = w->next) 2609 for (w = signals [signum].head; w; w = w->next)
1361 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2610 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1362} 2611}
1363 2612
… …
1379 break; 2628 break;
1380 } 2629 }
1381} 2630}
1382#endif 2631#endif
1383 2632
2633#endif
2634
1384/*****************************************************************************/ 2635/*****************************************************************************/
1385 2636
2637#if EV_CHILD_ENABLE
1386static WL childs [EV_PID_HASHSIZE]; 2638static WL childs [EV_PID_HASHSIZE];
1387
1388#ifndef _WIN32
1389 2639
1390static ev_signal childev; 2640static ev_signal childev;
1391 2641
1392#ifndef WIFCONTINUED 2642#ifndef WIFCONTINUED
1393# define WIFCONTINUED(status) 0 2643# define WIFCONTINUED(status) 0
… …
1398child_reap (EV_P_ int chain, int pid, int status) 2648child_reap (EV_P_ int chain, int pid, int status)
1399{ 2649{
1400 ev_child *w; 2650 ev_child *w;
1401 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2651 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1402 2652
1403 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)
1404 { 2654 {
1405 if ((w->pid == pid || !w->pid) 2655 if ((w->pid == pid || !w->pid)
1406 && (!traced || (w->flags & 1))) 2656 && (!traced || (w->flags & 1)))
1407 { 2657 {
1408 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 */
… …
1433 /* 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 */
1434 /* 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 */
1435 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2685 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1436 2686
1437 child_reap (EV_A_ pid, pid, status); 2687 child_reap (EV_A_ pid, pid, status);
1438 if (EV_PID_HASHSIZE > 1) 2688 if ((EV_PID_HASHSIZE) > 1)
1439 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 */
1440} 2690}
1441 2691
1442#endif 2692#endif
1443 2693
1444/*****************************************************************************/ 2694/*****************************************************************************/
1445 2695
2696#if EV_USE_IOCP
2697# include "ev_iocp.c"
2698#endif
1446#if EV_USE_PORT 2699#if EV_USE_PORT
1447# include "ev_port.c" 2700# include "ev_port.c"
1448#endif 2701#endif
1449#if EV_USE_KQUEUE 2702#if EV_USE_KQUEUE
1450# include "ev_kqueue.c" 2703# include "ev_kqueue.c"
… …
1457#endif 2710#endif
1458#if EV_USE_SELECT 2711#if EV_USE_SELECT
1459# include "ev_select.c" 2712# include "ev_select.c"
1460#endif 2713#endif
1461 2714
1462int 2715ecb_cold int
1463ev_version_major (void) 2716ev_version_major (void) EV_NOEXCEPT
1464{ 2717{
1465 return EV_VERSION_MAJOR; 2718 return EV_VERSION_MAJOR;
1466} 2719}
1467 2720
1468int 2721ecb_cold int
1469ev_version_minor (void) 2722ev_version_minor (void) EV_NOEXCEPT
1470{ 2723{
1471 return EV_VERSION_MINOR; 2724 return EV_VERSION_MINOR;
1472} 2725}
1473 2726
1474/* 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 */
1475int inline_size 2728inline_size ecb_cold int
1476enable_secure (void) 2729enable_secure (void)
1477{ 2730{
1478#ifdef _WIN32 2731#ifdef _WIN32
1479 return 0; 2732 return 0;
1480#else 2733#else
1481 return getuid () != geteuid () 2734 return getuid () != geteuid ()
1482 || getgid () != getegid (); 2735 || getgid () != getegid ();
1483#endif 2736#endif
1484} 2737}
1485 2738
2739ecb_cold
1486unsigned int 2740unsigned int
1487ev_supported_backends (void) 2741ev_supported_backends (void) EV_NOEXCEPT
1488{ 2742{
1489 unsigned int flags = 0; 2743 unsigned int flags = 0;
1490 2744
1491 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2745 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1492 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2746 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1495 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2749 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1496 2750
1497 return flags; 2751 return flags;
1498} 2752}
1499 2753
2754ecb_cold
1500unsigned int 2755unsigned int
1501ev_recommended_backends (void) 2756ev_recommended_backends (void) EV_NOEXCEPT
1502{ 2757{
1503 unsigned int flags = ev_supported_backends (); 2758 unsigned int flags = ev_supported_backends ();
1504 2759
1505#ifndef __NetBSD__ 2760#ifndef __NetBSD__
1506 /* kqueue is borked on everything but netbsd apparently */ 2761 /* kqueue is borked on everything but netbsd apparently */
… …
1510#ifdef __APPLE__ 2765#ifdef __APPLE__
1511 /* only select works correctly on that "unix-certified" platform */ 2766 /* only select works correctly on that "unix-certified" platform */
1512 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2767 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1513 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 */
1514#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
1515 2773
1516 return flags; 2774 return flags;
1517} 2775}
1518 2776
2777ecb_cold
1519unsigned int 2778unsigned int
1520ev_embeddable_backends (void) 2779ev_embeddable_backends (void) EV_NOEXCEPT
1521{ 2780{
1522 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2781 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1523 2782
1524 /* 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 */
1525 /* please fix it and tell me how to detect the fix */ 2784 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1526 flags &= ~EVBACKEND_EPOLL; 2785 flags &= ~EVBACKEND_EPOLL;
1527 2786
1528 return flags; 2787 return flags;
1529} 2788}
1530 2789
1531unsigned int 2790unsigned int
1532ev_backend (EV_P) 2791ev_backend (EV_P) EV_NOEXCEPT
1533{ 2792{
1534 return backend; 2793 return backend;
1535} 2794}
1536 2795
1537#if EV_MINIMAL < 2 2796#if EV_FEATURE_API
1538unsigned int 2797unsigned int
1539ev_loop_count (EV_P) 2798ev_iteration (EV_P) EV_NOEXCEPT
1540{ 2799{
1541 return loop_count; 2800 return loop_count;
1542} 2801}
1543 2802
1544unsigned int 2803unsigned int
1545ev_loop_depth (EV_P) 2804ev_depth (EV_P) EV_NOEXCEPT
1546{ 2805{
1547 return loop_depth; 2806 return loop_depth;
1548} 2807}
1549 2808
1550void 2809void
1551ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2810ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1552{ 2811{
1553 io_blocktime = interval; 2812 io_blocktime = interval;
1554} 2813}
1555 2814
1556void 2815void
1557ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2816ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1558{ 2817{
1559 timeout_blocktime = interval; 2818 timeout_blocktime = interval;
1560} 2819}
1561 2820
1562void 2821void
1563ev_set_userdata (EV_P_ void *data) 2822ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
1564{ 2823{
1565 userdata = data; 2824 userdata = data;
1566} 2825}
1567 2826
1568void * 2827void *
1569ev_userdata (EV_P) 2828ev_userdata (EV_P) EV_NOEXCEPT
1570{ 2829{
1571 return userdata; 2830 return userdata;
1572} 2831}
1573 2832
2833void
1574void 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
1575{ 2835{
1576 invoke_cb = invoke_pending_cb; 2836 invoke_cb = invoke_pending_cb;
1577} 2837}
1578 2838
2839void
1579void 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
1580{ 2841{
1581 release_cb = release; 2842 release_cb = release;
1582 acquire_cb = acquire; 2843 acquire_cb = acquire;
1583} 2844}
1584#endif 2845#endif
1585 2846
1586/* initialise a loop structure, must be zero-initialised */ 2847/* initialise a loop structure, must be zero-initialised */
1587static void noinline 2848noinline ecb_cold
2849static void
1588loop_init (EV_P_ unsigned int flags) 2850loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
1589{ 2851{
1590 if (!backend) 2852 if (!backend)
1591 { 2853 {
2854 origflags = flags;
2855
1592#if EV_USE_REALTIME 2856#if EV_USE_REALTIME
1593 if (!have_realtime) 2857 if (!have_realtime)
1594 { 2858 {
1595 struct timespec ts; 2859 struct timespec ts;
1596 2860
… …
1618 if (!(flags & EVFLAG_NOENV) 2882 if (!(flags & EVFLAG_NOENV)
1619 && !enable_secure () 2883 && !enable_secure ()
1620 && getenv ("LIBEV_FLAGS")) 2884 && getenv ("LIBEV_FLAGS"))
1621 flags = atoi (getenv ("LIBEV_FLAGS")); 2885 flags = atoi (getenv ("LIBEV_FLAGS"));
1622 2886
1623 ev_rt_now = ev_time (); 2887 ev_rt_now = ev_time ();
1624 mn_now = get_clock (); 2888 mn_now = get_clock ();
1625 now_floor = mn_now; 2889 now_floor = mn_now;
1626 rtmn_diff = ev_rt_now - mn_now; 2890 rtmn_diff = ev_rt_now - mn_now;
1627#if EV_MINIMAL < 2 2891#if EV_FEATURE_API
1628 invoke_cb = ev_invoke_pending; 2892 invoke_cb = ev_invoke_pending;
1629#endif 2893#endif
1630 2894
1631 io_blocktime = 0.; 2895 io_blocktime = 0.;
1632 timeout_blocktime = 0.; 2896 timeout_blocktime = 0.;
1633 backend = 0; 2897 backend = 0;
1634 backend_fd = -1; 2898 backend_fd = -1;
1635 sig_pending = 0; 2899 sig_pending = 0;
1636#if EV_ASYNC_ENABLE 2900#if EV_ASYNC_ENABLE
1637 async_pending = 0; 2901 async_pending = 0;
1638#endif 2902#endif
2903 pipe_write_skipped = 0;
2904 pipe_write_wanted = 0;
2905 evpipe [0] = -1;
2906 evpipe [1] = -1;
1639#if EV_USE_INOTIFY 2907#if EV_USE_INOTIFY
1640 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2908 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1641#endif 2909#endif
1642#if EV_USE_SIGNALFD 2910#if EV_USE_SIGNALFD
1643 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2911 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1644#endif 2912#endif
1645 2913
1646 if (!(flags & 0x0000ffffU)) 2914 if (!(flags & EVBACKEND_MASK))
1647 flags |= ev_recommended_backends (); 2915 flags |= ev_recommended_backends ();
1648 2916
2917#if EV_USE_IOCP
2918 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2919#endif
1649#if EV_USE_PORT 2920#if EV_USE_PORT
1650 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2921 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1651#endif 2922#endif
1652#if EV_USE_KQUEUE 2923#if EV_USE_KQUEUE
1653 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2924 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1662 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2933 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1663#endif 2934#endif
1664 2935
1665 ev_prepare_init (&pending_w, pendingcb); 2936 ev_prepare_init (&pending_w, pendingcb);
1666 2937
2938#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1667 ev_init (&pipe_w, pipecb); 2939 ev_init (&pipe_w, pipecb);
1668 ev_set_priority (&pipe_w, EV_MAXPRI); 2940 ev_set_priority (&pipe_w, EV_MAXPRI);
2941#endif
1669 } 2942 }
1670} 2943}
1671 2944
1672/* free up a loop structure */ 2945/* free up a loop structure */
1673static void noinline 2946ecb_cold
2947void
1674loop_destroy (EV_P) 2948ev_loop_destroy (EV_P)
1675{ 2949{
1676 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
1677 2974
1678 if (ev_is_active (&pipe_w)) 2975 if (ev_is_active (&pipe_w))
1679 { 2976 {
1680 /*ev_ref (EV_A);*/ 2977 /*ev_ref (EV_A);*/
1681 /*ev_io_stop (EV_A_ &pipe_w);*/ 2978 /*ev_io_stop (EV_A_ &pipe_w);*/
1682 2979
1683#if EV_USE_EVENTFD
1684 if (evfd >= 0)
1685 close (evfd);
1686#endif
1687
1688 if (evpipe [0] >= 0)
1689 {
1690 EV_WIN32_CLOSE_FD (evpipe [0]); 2980 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1691 EV_WIN32_CLOSE_FD (evpipe [1]); 2981 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1692 }
1693 } 2982 }
1694 2983
1695#if EV_USE_SIGNALFD 2984#if EV_USE_SIGNALFD
1696 if (ev_is_active (&sigfd_w)) 2985 if (ev_is_active (&sigfd_w))
1697 close (sigfd); 2986 close (sigfd);
… …
1703#endif 2992#endif
1704 2993
1705 if (backend_fd >= 0) 2994 if (backend_fd >= 0)
1706 close (backend_fd); 2995 close (backend_fd);
1707 2996
2997#if EV_USE_IOCP
2998 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2999#endif
1708#if EV_USE_PORT 3000#if EV_USE_PORT
1709 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3001 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1710#endif 3002#endif
1711#if EV_USE_KQUEUE 3003#if EV_USE_KQUEUE
1712 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3004 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1739 array_free (periodic, EMPTY); 3031 array_free (periodic, EMPTY);
1740#endif 3032#endif
1741#if EV_FORK_ENABLE 3033#if EV_FORK_ENABLE
1742 array_free (fork, EMPTY); 3034 array_free (fork, EMPTY);
1743#endif 3035#endif
3036#if EV_CLEANUP_ENABLE
3037 array_free (cleanup, EMPTY);
3038#endif
1744 array_free (prepare, EMPTY); 3039 array_free (prepare, EMPTY);
1745 array_free (check, EMPTY); 3040 array_free (check, EMPTY);
1746#if EV_ASYNC_ENABLE 3041#if EV_ASYNC_ENABLE
1747 array_free (async, EMPTY); 3042 array_free (async, EMPTY);
1748#endif 3043#endif
1749 3044
1750 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
1751} 3055}
1752 3056
1753#if EV_USE_INOTIFY 3057#if EV_USE_INOTIFY
1754inline_size void infy_fork (EV_P); 3058inline_size void infy_fork (EV_P);
1755#endif 3059#endif
… …
1768#endif 3072#endif
1769#if EV_USE_INOTIFY 3073#if EV_USE_INOTIFY
1770 infy_fork (EV_A); 3074 infy_fork (EV_A);
1771#endif 3075#endif
1772 3076
3077#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1773 if (ev_is_active (&pipe_w)) 3078 if (ev_is_active (&pipe_w) && postfork != 2)
1774 { 3079 {
1775 /* this "locks" the handlers against writing to the pipe */ 3080 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1776 /* while we modify the fd vars */
1777 sig_pending = 1;
1778#if EV_ASYNC_ENABLE
1779 async_pending = 1;
1780#endif
1781 3081
1782 ev_ref (EV_A); 3082 ev_ref (EV_A);
1783 ev_io_stop (EV_A_ &pipe_w); 3083 ev_io_stop (EV_A_ &pipe_w);
1784 3084
1785#if EV_USE_EVENTFD
1786 if (evfd >= 0)
1787 close (evfd);
1788#endif
1789
1790 if (evpipe [0] >= 0) 3085 if (evpipe [0] >= 0)
1791 {
1792 EV_WIN32_CLOSE_FD (evpipe [0]); 3086 EV_WIN32_CLOSE_FD (evpipe [0]);
1793 EV_WIN32_CLOSE_FD (evpipe [1]);
1794 }
1795 3087
1796 evpipe_init (EV_A); 3088 evpipe_init (EV_A);
1797 /* now iterate over everything, in case we missed something */ 3089 /* iterate over everything, in case we missed something before */
1798 pipecb (EV_A_ &pipe_w, EV_READ); 3090 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1799 } 3091 }
3092#endif
1800 3093
1801 postfork = 0; 3094 postfork = 0;
1802} 3095}
1803 3096
1804#if EV_MULTIPLICITY 3097#if EV_MULTIPLICITY
1805 3098
3099ecb_cold
1806struct ev_loop * 3100struct ev_loop *
1807ev_loop_new (unsigned int flags) 3101ev_loop_new (unsigned int flags) EV_NOEXCEPT
1808{ 3102{
1809 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3103 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1810 3104
1811 memset (EV_A, 0, sizeof (struct ev_loop)); 3105 memset (EV_A, 0, sizeof (struct ev_loop));
1812 loop_init (EV_A_ flags); 3106 loop_init (EV_A_ flags);
1813 3107
1814 if (ev_backend (EV_A)) 3108 if (ev_backend (EV_A))
1815 return EV_A; 3109 return EV_A;
1816 3110
3111 ev_free (EV_A);
1817 return 0; 3112 return 0;
1818} 3113}
1819 3114
1820void
1821ev_loop_destroy (EV_P)
1822{
1823 loop_destroy (EV_A);
1824 ev_free (loop);
1825}
1826
1827void
1828ev_loop_fork (EV_P)
1829{
1830 postfork = 1; /* must be in line with ev_default_fork */
1831}
1832#endif /* multiplicity */ 3115#endif /* multiplicity */
1833 3116
1834#if EV_VERIFY 3117#if EV_VERIFY
1835static void noinline 3118noinline ecb_cold
3119static void
1836verify_watcher (EV_P_ W w) 3120verify_watcher (EV_P_ W w)
1837{ 3121{
1838 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));
1839 3123
1840 if (w->pending) 3124 if (w->pending)
1841 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));
1842} 3126}
1843 3127
1844static void noinline 3128noinline ecb_cold
3129static void
1845verify_heap (EV_P_ ANHE *heap, int N) 3130verify_heap (EV_P_ ANHE *heap, int N)
1846{ 3131{
1847 int i; 3132 int i;
1848 3133
1849 for (i = HEAP0; i < N + HEAP0; ++i) 3134 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1854 3139
1855 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3140 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1856 } 3141 }
1857} 3142}
1858 3143
1859static void noinline 3144noinline ecb_cold
3145static void
1860array_verify (EV_P_ W *ws, int cnt) 3146array_verify (EV_P_ W *ws, int cnt)
1861{ 3147{
1862 while (cnt--) 3148 while (cnt--)
1863 { 3149 {
1864 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3150 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1865 verify_watcher (EV_A_ ws [cnt]); 3151 verify_watcher (EV_A_ ws [cnt]);
1866 } 3152 }
1867} 3153}
1868#endif 3154#endif
1869 3155
1870#if EV_MINIMAL < 2 3156#if EV_FEATURE_API
1871void 3157void ecb_cold
1872ev_loop_verify (EV_P) 3158ev_verify (EV_P) EV_NOEXCEPT
1873{ 3159{
1874#if EV_VERIFY 3160#if EV_VERIFY
1875 int i; 3161 int i;
1876 WL w; 3162 WL w, w2;
1877 3163
1878 assert (activecnt >= -1); 3164 assert (activecnt >= -1);
1879 3165
1880 assert (fdchangemax >= fdchangecnt); 3166 assert (fdchangemax >= fdchangecnt);
1881 for (i = 0; i < fdchangecnt; ++i) 3167 for (i = 0; i < fdchangecnt; ++i)
1882 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3168 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1883 3169
1884 assert (anfdmax >= 0); 3170 assert (anfdmax >= 0);
1885 for (i = 0; i < anfdmax; ++i) 3171 for (i = 0; i < anfdmax; ++i)
3172 {
3173 int j = 0;
3174
1886 for (w = anfds [i].head; w; w = w->next) 3175 for (w = w2 = anfds [i].head; w; w = w->next)
1887 { 3176 {
1888 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
1889 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));
1890 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));
1891 } 3187 }
3188 }
1892 3189
1893 assert (timermax >= timercnt); 3190 assert (timermax >= timercnt);
1894 verify_heap (EV_A_ timers, timercnt); 3191 verify_heap (EV_A_ timers, timercnt);
1895 3192
1896#if EV_PERIODIC_ENABLE 3193#if EV_PERIODIC_ENABLE
… …
1911#if EV_FORK_ENABLE 3208#if EV_FORK_ENABLE
1912 assert (forkmax >= forkcnt); 3209 assert (forkmax >= forkcnt);
1913 array_verify (EV_A_ (W *)forks, forkcnt); 3210 array_verify (EV_A_ (W *)forks, forkcnt);
1914#endif 3211#endif
1915 3212
3213#if EV_CLEANUP_ENABLE
3214 assert (cleanupmax >= cleanupcnt);
3215 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
3216#endif
3217
1916#if EV_ASYNC_ENABLE 3218#if EV_ASYNC_ENABLE
1917 assert (asyncmax >= asynccnt); 3219 assert (asyncmax >= asynccnt);
1918 array_verify (EV_A_ (W *)asyncs, asynccnt); 3220 array_verify (EV_A_ (W *)asyncs, asynccnt);
1919#endif 3221#endif
1920 3222
3223#if EV_PREPARE_ENABLE
1921 assert (preparemax >= preparecnt); 3224 assert (preparemax >= preparecnt);
1922 array_verify (EV_A_ (W *)prepares, preparecnt); 3225 array_verify (EV_A_ (W *)prepares, preparecnt);
3226#endif
1923 3227
3228#if EV_CHECK_ENABLE
1924 assert (checkmax >= checkcnt); 3229 assert (checkmax >= checkcnt);
1925 array_verify (EV_A_ (W *)checks, checkcnt); 3230 array_verify (EV_A_ (W *)checks, checkcnt);
3231#endif
1926 3232
1927# if 0 3233# if 0
3234#if EV_CHILD_ENABLE
1928 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)
1929 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending) 3236 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
3237#endif
1930# endif 3238# endif
1931#endif 3239#endif
1932} 3240}
1933#endif 3241#endif
1934 3242
1935#if EV_MULTIPLICITY 3243#if EV_MULTIPLICITY
3244ecb_cold
1936struct ev_loop * 3245struct ev_loop *
1937ev_default_loop_init (unsigned int flags)
1938#else 3246#else
1939int 3247int
3248#endif
1940ev_default_loop (unsigned int flags) 3249ev_default_loop (unsigned int flags) EV_NOEXCEPT
1941#endif
1942{ 3250{
1943 if (!ev_default_loop_ptr) 3251 if (!ev_default_loop_ptr)
1944 { 3252 {
1945#if EV_MULTIPLICITY 3253#if EV_MULTIPLICITY
1946 EV_P = ev_default_loop_ptr = &default_loop_struct; 3254 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1950 3258
1951 loop_init (EV_A_ flags); 3259 loop_init (EV_A_ flags);
1952 3260
1953 if (ev_backend (EV_A)) 3261 if (ev_backend (EV_A))
1954 { 3262 {
1955#ifndef _WIN32 3263#if EV_CHILD_ENABLE
1956 ev_signal_init (&childev, childcb, SIGCHLD); 3264 ev_signal_init (&childev, childcb, SIGCHLD);
1957 ev_set_priority (&childev, EV_MAXPRI); 3265 ev_set_priority (&childev, EV_MAXPRI);
1958 ev_signal_start (EV_A_ &childev); 3266 ev_signal_start (EV_A_ &childev);
1959 ev_unref (EV_A); /* child watcher should not keep loop alive */ 3267 ev_unref (EV_A); /* child watcher should not keep loop alive */
1960#endif 3268#endif
… …
1965 3273
1966 return ev_default_loop_ptr; 3274 return ev_default_loop_ptr;
1967} 3275}
1968 3276
1969void 3277void
1970ev_default_destroy (void) 3278ev_loop_fork (EV_P) EV_NOEXCEPT
1971{ 3279{
1972#if EV_MULTIPLICITY 3280 postfork = 1;
1973 EV_P = ev_default_loop_ptr;
1974#endif
1975
1976 ev_default_loop_ptr = 0;
1977
1978#ifndef _WIN32
1979 ev_ref (EV_A); /* child watcher */
1980 ev_signal_stop (EV_A_ &childev);
1981#endif
1982
1983 loop_destroy (EV_A);
1984}
1985
1986void
1987ev_default_fork (void)
1988{
1989#if EV_MULTIPLICITY
1990 EV_P = ev_default_loop_ptr;
1991#endif
1992
1993 postfork = 1; /* must be in line with ev_loop_fork */
1994} 3281}
1995 3282
1996/*****************************************************************************/ 3283/*****************************************************************************/
1997 3284
1998void 3285void
… …
2000{ 3287{
2001 EV_CB_INVOKE ((W)w, revents); 3288 EV_CB_INVOKE ((W)w, revents);
2002} 3289}
2003 3290
2004unsigned int 3291unsigned int
2005ev_pending_count (EV_P) 3292ev_pending_count (EV_P) EV_NOEXCEPT
2006{ 3293{
2007 int pri; 3294 int pri;
2008 unsigned int count = 0; 3295 unsigned int count = 0;
2009 3296
2010 for (pri = NUMPRI; pri--; ) 3297 for (pri = NUMPRI; pri--; )
2011 count += pendingcnt [pri]; 3298 count += pendingcnt [pri];
2012 3299
2013 return count; 3300 return count;
2014} 3301}
2015 3302
2016void noinline 3303noinline
3304void
2017ev_invoke_pending (EV_P) 3305ev_invoke_pending (EV_P)
2018{ 3306{
2019 int pri; 3307 pendingpri = NUMPRI;
2020 3308
2021 for (pri = NUMPRI; pri--; ) 3309 do
3310 {
3311 --pendingpri;
3312
3313 /* pendingpri possibly gets modified in the inner loop */
2022 while (pendingcnt [pri]) 3314 while (pendingcnt [pendingpri])
2023 { 3315 {
2024 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3316 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2025 3317
2026 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2027 /* ^ this is no longer true, as pending_w could be here */
2028
2029 p->w->pending = 0; 3318 p->w->pending = 0;
2030 EV_CB_INVOKE (p->w, p->events); 3319 EV_CB_INVOKE (p->w, p->events);
2031 EV_FREQUENT_CHECK; 3320 EV_FREQUENT_CHECK;
2032 } 3321 }
3322 }
3323 while (pendingpri);
2033} 3324}
2034 3325
2035#if EV_IDLE_ENABLE 3326#if EV_IDLE_ENABLE
2036/* make idle watchers pending. this handles the "call-idle */ 3327/* make idle watchers pending. this handles the "call-idle */
2037/* only when higher priorities are idle" logic */ 3328/* only when higher priorities are idle" logic */
… …
2089 EV_FREQUENT_CHECK; 3380 EV_FREQUENT_CHECK;
2090 feed_reverse (EV_A_ (W)w); 3381 feed_reverse (EV_A_ (W)w);
2091 } 3382 }
2092 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 3383 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
2093 3384
2094 feed_reverse_done (EV_A_ EV_TIMEOUT); 3385 feed_reverse_done (EV_A_ EV_TIMER);
2095 } 3386 }
2096} 3387}
2097 3388
2098#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
2099/* make periodics pending */ 3416/* make periodics pending */
2100inline_size void 3417inline_size void
2101periodics_reify (EV_P) 3418periodics_reify (EV_P)
2102{ 3419{
2103 EV_FREQUENT_CHECK; 3420 EV_FREQUENT_CHECK;
2104 3421
2105 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3422 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2106 { 3423 {
2107 int feed_count = 0;
2108
2109 do 3424 do
2110 { 3425 {
2111 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3426 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2112 3427
2113 /*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)));*/
… …
2122 ANHE_at_cache (periodics [HEAP0]); 3437 ANHE_at_cache (periodics [HEAP0]);
2123 downheap (periodics, periodiccnt, HEAP0); 3438 downheap (periodics, periodiccnt, HEAP0);
2124 } 3439 }
2125 else if (w->interval) 3440 else if (w->interval)
2126 { 3441 {
2127 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3442 periodic_recalc (EV_A_ w);
2128 /* if next trigger time is not sufficiently in the future, put it there */
2129 /* this might happen because of floating point inexactness */
2130 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2131 {
2132 ev_at (w) += w->interval;
2133
2134 /* if interval is unreasonably low we might still have a time in the past */
2135 /* so correct this. this will make the periodic very inexact, but the user */
2136 /* has effectively asked to get triggered more often than possible */
2137 if (ev_at (w) < ev_rt_now)
2138 ev_at (w) = ev_rt_now;
2139 }
2140
2141 ANHE_at_cache (periodics [HEAP0]); 3443 ANHE_at_cache (periodics [HEAP0]);
2142 downheap (periodics, periodiccnt, HEAP0); 3444 downheap (periodics, periodiccnt, HEAP0);
2143 } 3445 }
2144 else 3446 else
2145 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3447 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2152 feed_reverse_done (EV_A_ EV_PERIODIC); 3454 feed_reverse_done (EV_A_ EV_PERIODIC);
2153 } 3455 }
2154} 3456}
2155 3457
2156/* simply recalculate all periodics */ 3458/* simply recalculate all periodics */
2157/* 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? */
2158static void noinline 3460noinline ecb_cold
3461static void
2159periodics_reschedule (EV_P) 3462periodics_reschedule (EV_P)
2160{ 3463{
2161 int i; 3464 int i;
2162 3465
2163 /* adjust periodics after time jump */ 3466 /* adjust periodics after time jump */
… …
2166 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3469 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2167 3470
2168 if (w->reschedule_cb) 3471 if (w->reschedule_cb)
2169 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3472 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2170 else if (w->interval) 3473 else if (w->interval)
2171 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3474 periodic_recalc (EV_A_ w);
2172 3475
2173 ANHE_at_cache (periodics [i]); 3476 ANHE_at_cache (periodics [i]);
2174 } 3477 }
2175 3478
2176 reheap (periodics, periodiccnt); 3479 reheap (periodics, periodiccnt);
2177} 3480}
2178#endif 3481#endif
2179 3482
2180/* adjust all timers by a given offset */ 3483/* adjust all timers by a given offset */
2181static void noinline 3484noinline ecb_cold
3485static void
2182timers_reschedule (EV_P_ ev_tstamp adjust) 3486timers_reschedule (EV_P_ ev_tstamp adjust)
2183{ 3487{
2184 int i; 3488 int i;
2185 3489
2186 for (i = 0; i < timercnt; ++i) 3490 for (i = 0; i < timercnt; ++i)
… …
2223 * 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
2224 * in the unlikely event of having been preempted here. 3528 * in the unlikely event of having been preempted here.
2225 */ 3529 */
2226 for (i = 4; --i; ) 3530 for (i = 4; --i; )
2227 { 3531 {
3532 ev_tstamp diff;
2228 rtmn_diff = ev_rt_now - mn_now; 3533 rtmn_diff = ev_rt_now - mn_now;
2229 3534
3535 diff = odiff - rtmn_diff;
3536
2230 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3537 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2231 return; /* all is well */ 3538 return; /* all is well */
2232 3539
2233 ev_rt_now = ev_time (); 3540 ev_rt_now = ev_time ();
2234 mn_now = get_clock (); 3541 mn_now = get_clock ();
2235 now_floor = mn_now; 3542 now_floor = mn_now;
… …
2257 3564
2258 mn_now = ev_rt_now; 3565 mn_now = ev_rt_now;
2259 } 3566 }
2260} 3567}
2261 3568
2262void 3569int
2263ev_loop (EV_P_ int flags) 3570ev_run (EV_P_ int flags)
2264{ 3571{
2265#if EV_MINIMAL < 2 3572#if EV_FEATURE_API
2266 ++loop_depth; 3573 ++loop_depth;
2267#endif 3574#endif
2268 3575
2269 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));
2270 3577
2271 loop_done = EVUNLOOP_CANCEL; 3578 loop_done = EVBREAK_CANCEL;
2272 3579
2273 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 */
2274 3581
2275 do 3582 do
2276 { 3583 {
2277#if EV_VERIFY >= 2 3584#if EV_VERIFY >= 2
2278 ev_loop_verify (EV_A); 3585 ev_verify (EV_A);
2279#endif 3586#endif
2280 3587
2281#ifndef _WIN32 3588#ifndef _WIN32
2282 if (expect_false (curpid)) /* penalise the forking check even more */ 3589 if (expect_false (curpid)) /* penalise the forking check even more */
2283 if (expect_false (getpid () != curpid)) 3590 if (expect_false (getpid () != curpid))
… …
2295 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3602 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2296 EV_INVOKE_PENDING; 3603 EV_INVOKE_PENDING;
2297 } 3604 }
2298#endif 3605#endif
2299 3606
3607#if EV_PREPARE_ENABLE
2300 /* queue prepare watchers (and execute them) */ 3608 /* queue prepare watchers (and execute them) */
2301 if (expect_false (preparecnt)) 3609 if (expect_false (preparecnt))
2302 { 3610 {
2303 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3611 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2304 EV_INVOKE_PENDING; 3612 EV_INVOKE_PENDING;
2305 } 3613 }
3614#endif
2306 3615
2307 if (expect_false (loop_done)) 3616 if (expect_false (loop_done))
2308 break; 3617 break;
2309 3618
2310 /* we might have forked, so reify kernel state if necessary */ 3619 /* we might have forked, so reify kernel state if necessary */
… …
2317 /* calculate blocking time */ 3626 /* calculate blocking time */
2318 { 3627 {
2319 ev_tstamp waittime = 0.; 3628 ev_tstamp waittime = 0.;
2320 ev_tstamp sleeptime = 0.; 3629 ev_tstamp sleeptime = 0.;
2321 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
2322 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3642 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2323 { 3643 {
2324 /* remember old timestamp for io_blocktime calculation */
2325 ev_tstamp prev_mn_now = mn_now;
2326
2327 /* update time to cancel out callback processing overhead */
2328 time_update (EV_A_ 1e100);
2329
2330 waittime = MAX_BLOCKTIME; 3644 waittime = MAX_BLOCKTIME;
2331 3645
2332 if (timercnt) 3646 if (timercnt)
2333 { 3647 {
2334 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3648 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2335 if (waittime > to) waittime = to; 3649 if (waittime > to) waittime = to;
2336 } 3650 }
2337 3651
2338#if EV_PERIODIC_ENABLE 3652#if EV_PERIODIC_ENABLE
2339 if (periodiccnt) 3653 if (periodiccnt)
2340 { 3654 {
2341 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3655 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2342 if (waittime > to) waittime = to; 3656 if (waittime > to) waittime = to;
2343 } 3657 }
2344#endif 3658#endif
2345 3659
2346 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3660 /* don't let timeouts decrease the waittime below timeout_blocktime */
2347 if (expect_false (waittime < timeout_blocktime)) 3661 if (expect_false (waittime < timeout_blocktime))
2348 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;
2349 3668
2350 /* extra check because io_blocktime is commonly 0 */ 3669 /* extra check because io_blocktime is commonly 0 */
2351 if (expect_false (io_blocktime)) 3670 if (expect_false (io_blocktime))
2352 { 3671 {
2353 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3672 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2354 3673
2355 if (sleeptime > waittime - backend_fudge) 3674 if (sleeptime > waittime - backend_mintime)
2356 sleeptime = waittime - backend_fudge; 3675 sleeptime = waittime - backend_mintime;
2357 3676
2358 if (expect_true (sleeptime > 0.)) 3677 if (expect_true (sleeptime > 0.))
2359 { 3678 {
2360 ev_sleep (sleeptime); 3679 ev_sleep (sleeptime);
2361 waittime -= sleeptime; 3680 waittime -= sleeptime;
2362 } 3681 }
2363 } 3682 }
2364 } 3683 }
2365 3684
2366#if EV_MINIMAL < 2 3685#if EV_FEATURE_API
2367 ++loop_count; 3686 ++loop_count;
2368#endif 3687#endif
2369 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3688 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2370 backend_poll (EV_A_ waittime); 3689 backend_poll (EV_A_ waittime);
2371 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
2372 3701
2373 /* update ev_rt_now, do magic */ 3702 /* update ev_rt_now, do magic */
2374 time_update (EV_A_ waittime + sleeptime); 3703 time_update (EV_A_ waittime + sleeptime);
2375 } 3704 }
2376 3705
… …
2383#if EV_IDLE_ENABLE 3712#if EV_IDLE_ENABLE
2384 /* queue idle watchers unless other events are pending */ 3713 /* queue idle watchers unless other events are pending */
2385 idle_reify (EV_A); 3714 idle_reify (EV_A);
2386#endif 3715#endif
2387 3716
3717#if EV_CHECK_ENABLE
2388 /* queue check watchers, to be executed first */ 3718 /* queue check watchers, to be executed first */
2389 if (expect_false (checkcnt)) 3719 if (expect_false (checkcnt))
2390 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3720 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3721#endif
2391 3722
2392 EV_INVOKE_PENDING; 3723 EV_INVOKE_PENDING;
2393 } 3724 }
2394 while (expect_true ( 3725 while (expect_true (
2395 activecnt 3726 activecnt
2396 && !loop_done 3727 && !loop_done
2397 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3728 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2398 )); 3729 ));
2399 3730
2400 if (loop_done == EVUNLOOP_ONE) 3731 if (loop_done == EVBREAK_ONE)
2401 loop_done = EVUNLOOP_CANCEL; 3732 loop_done = EVBREAK_CANCEL;
2402 3733
2403#if EV_MINIMAL < 2 3734#if EV_FEATURE_API
2404 --loop_depth; 3735 --loop_depth;
2405#endif 3736#endif
2406}
2407 3737
3738 return activecnt;
3739}
3740
2408void 3741void
2409ev_unloop (EV_P_ int how) 3742ev_break (EV_P_ int how) EV_NOEXCEPT
2410{ 3743{
2411 loop_done = how; 3744 loop_done = how;
2412} 3745}
2413 3746
2414void 3747void
2415ev_ref (EV_P) 3748ev_ref (EV_P) EV_NOEXCEPT
2416{ 3749{
2417 ++activecnt; 3750 ++activecnt;
2418} 3751}
2419 3752
2420void 3753void
2421ev_unref (EV_P) 3754ev_unref (EV_P) EV_NOEXCEPT
2422{ 3755{
2423 --activecnt; 3756 --activecnt;
2424} 3757}
2425 3758
2426void 3759void
2427ev_now_update (EV_P) 3760ev_now_update (EV_P) EV_NOEXCEPT
2428{ 3761{
2429 time_update (EV_A_ 1e100); 3762 time_update (EV_A_ 1e100);
2430} 3763}
2431 3764
2432void 3765void
2433ev_suspend (EV_P) 3766ev_suspend (EV_P) EV_NOEXCEPT
2434{ 3767{
2435 ev_now_update (EV_A); 3768 ev_now_update (EV_A);
2436} 3769}
2437 3770
2438void 3771void
2439ev_resume (EV_P) 3772ev_resume (EV_P) EV_NOEXCEPT
2440{ 3773{
2441 ev_tstamp mn_prev = mn_now; 3774 ev_tstamp mn_prev = mn_now;
2442 3775
2443 ev_now_update (EV_A); 3776 ev_now_update (EV_A);
2444 timers_reschedule (EV_A_ mn_now - mn_prev); 3777 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2483 w->pending = 0; 3816 w->pending = 0;
2484 } 3817 }
2485} 3818}
2486 3819
2487int 3820int
2488ev_clear_pending (EV_P_ void *w) 3821ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
2489{ 3822{
2490 W w_ = (W)w; 3823 W w_ = (W)w;
2491 int pending = w_->pending; 3824 int pending = w_->pending;
2492 3825
2493 if (expect_true (pending)) 3826 if (expect_true (pending))
… …
2525 w->active = 0; 3858 w->active = 0;
2526} 3859}
2527 3860
2528/*****************************************************************************/ 3861/*****************************************************************************/
2529 3862
2530void noinline 3863noinline
3864void
2531ev_io_start (EV_P_ ev_io *w) 3865ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
2532{ 3866{
2533 int fd = w->fd; 3867 int fd = w->fd;
2534 3868
2535 if (expect_false (ev_is_active (w))) 3869 if (expect_false (ev_is_active (w)))
2536 return; 3870 return;
… …
2542 3876
2543 ev_start (EV_A_ (W)w, 1); 3877 ev_start (EV_A_ (W)w, 1);
2544 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3878 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2545 wlist_add (&anfds[fd].head, (WL)w); 3879 wlist_add (&anfds[fd].head, (WL)w);
2546 3880
3881 /* common bug, apparently */
3882 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3883
2547 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);
2548 w->events &= ~EV__IOFDSET; 3885 w->events &= ~EV__IOFDSET;
2549 3886
2550 EV_FREQUENT_CHECK; 3887 EV_FREQUENT_CHECK;
2551} 3888}
2552 3889
2553void noinline 3890noinline
3891void
2554ev_io_stop (EV_P_ ev_io *w) 3892ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
2555{ 3893{
2556 clear_pending (EV_A_ (W)w); 3894 clear_pending (EV_A_ (W)w);
2557 if (expect_false (!ev_is_active (w))) 3895 if (expect_false (!ev_is_active (w)))
2558 return; 3896 return;
2559 3897
… …
2562 EV_FREQUENT_CHECK; 3900 EV_FREQUENT_CHECK;
2563 3901
2564 wlist_del (&anfds[w->fd].head, (WL)w); 3902 wlist_del (&anfds[w->fd].head, (WL)w);
2565 ev_stop (EV_A_ (W)w); 3903 ev_stop (EV_A_ (W)w);
2566 3904
2567 fd_change (EV_A_ w->fd, 1); 3905 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2568 3906
2569 EV_FREQUENT_CHECK; 3907 EV_FREQUENT_CHECK;
2570} 3908}
2571 3909
2572void noinline 3910noinline
3911void
2573ev_timer_start (EV_P_ ev_timer *w) 3912ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
2574{ 3913{
2575 if (expect_false (ev_is_active (w))) 3914 if (expect_false (ev_is_active (w)))
2576 return; 3915 return;
2577 3916
2578 ev_at (w) += mn_now; 3917 ev_at (w) += mn_now;
… …
2591 EV_FREQUENT_CHECK; 3930 EV_FREQUENT_CHECK;
2592 3931
2593 /*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));*/
2594} 3933}
2595 3934
2596void noinline 3935noinline
3936void
2597ev_timer_stop (EV_P_ ev_timer *w) 3937ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
2598{ 3938{
2599 clear_pending (EV_A_ (W)w); 3939 clear_pending (EV_A_ (W)w);
2600 if (expect_false (!ev_is_active (w))) 3940 if (expect_false (!ev_is_active (w)))
2601 return; 3941 return;
2602 3942
… …
2621 ev_stop (EV_A_ (W)w); 3961 ev_stop (EV_A_ (W)w);
2622 3962
2623 EV_FREQUENT_CHECK; 3963 EV_FREQUENT_CHECK;
2624} 3964}
2625 3965
2626void noinline 3966noinline
3967void
2627ev_timer_again (EV_P_ ev_timer *w) 3968ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
2628{ 3969{
2629 EV_FREQUENT_CHECK; 3970 EV_FREQUENT_CHECK;
3971
3972 clear_pending (EV_A_ (W)w);
2630 3973
2631 if (ev_is_active (w)) 3974 if (ev_is_active (w))
2632 { 3975 {
2633 if (w->repeat) 3976 if (w->repeat)
2634 { 3977 {
… …
2647 3990
2648 EV_FREQUENT_CHECK; 3991 EV_FREQUENT_CHECK;
2649} 3992}
2650 3993
2651ev_tstamp 3994ev_tstamp
2652ev_timer_remaining (EV_P_ ev_timer *w) 3995ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
2653{ 3996{
2654 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3997 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2655} 3998}
2656 3999
2657#if EV_PERIODIC_ENABLE 4000#if EV_PERIODIC_ENABLE
2658void noinline 4001noinline
4002void
2659ev_periodic_start (EV_P_ ev_periodic *w) 4003ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
2660{ 4004{
2661 if (expect_false (ev_is_active (w))) 4005 if (expect_false (ev_is_active (w)))
2662 return; 4006 return;
2663 4007
2664 if (w->reschedule_cb) 4008 if (w->reschedule_cb)
2665 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4009 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2666 else if (w->interval) 4010 else if (w->interval)
2667 { 4011 {
2668 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.));
2669 /* this formula differs from the one in periodic_reify because we do not always round up */ 4013 periodic_recalc (EV_A_ w);
2670 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2671 } 4014 }
2672 else 4015 else
2673 ev_at (w) = w->offset; 4016 ev_at (w) = w->offset;
2674 4017
2675 EV_FREQUENT_CHECK; 4018 EV_FREQUENT_CHECK;
… …
2684 EV_FREQUENT_CHECK; 4027 EV_FREQUENT_CHECK;
2685 4028
2686 /*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));*/
2687} 4030}
2688 4031
2689void noinline 4032noinline
4033void
2690ev_periodic_stop (EV_P_ ev_periodic *w) 4034ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
2691{ 4035{
2692 clear_pending (EV_A_ (W)w); 4036 clear_pending (EV_A_ (W)w);
2693 if (expect_false (!ev_is_active (w))) 4037 if (expect_false (!ev_is_active (w)))
2694 return; 4038 return;
2695 4039
… …
2712 ev_stop (EV_A_ (W)w); 4056 ev_stop (EV_A_ (W)w);
2713 4057
2714 EV_FREQUENT_CHECK; 4058 EV_FREQUENT_CHECK;
2715} 4059}
2716 4060
2717void noinline 4061noinline
4062void
2718ev_periodic_again (EV_P_ ev_periodic *w) 4063ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
2719{ 4064{
2720 /* TODO: use adjustheap and recalculation */ 4065 /* TODO: use adjustheap and recalculation */
2721 ev_periodic_stop (EV_A_ w); 4066 ev_periodic_stop (EV_A_ w);
2722 ev_periodic_start (EV_A_ w); 4067 ev_periodic_start (EV_A_ w);
2723} 4068}
… …
2725 4070
2726#ifndef SA_RESTART 4071#ifndef SA_RESTART
2727# define SA_RESTART 0 4072# define SA_RESTART 0
2728#endif 4073#endif
2729 4074
4075#if EV_SIGNAL_ENABLE
4076
2730void noinline 4077noinline
4078void
2731ev_signal_start (EV_P_ ev_signal *w) 4079ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
2732{ 4080{
2733 if (expect_false (ev_is_active (w))) 4081 if (expect_false (ev_is_active (w)))
2734 return; 4082 return;
2735 4083
2736 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));
… …
2738#if EV_MULTIPLICITY 4086#if EV_MULTIPLICITY
2739 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",
2740 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4088 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2741 4089
2742 signals [w->signum - 1].loop = EV_A; 4090 signals [w->signum - 1].loop = EV_A;
4091 ECB_MEMORY_FENCE_RELEASE;
2743#endif 4092#endif
2744 4093
2745 EV_FREQUENT_CHECK; 4094 EV_FREQUENT_CHECK;
2746 4095
2747#if EV_USE_SIGNALFD 4096#if EV_USE_SIGNALFD
… …
2794 sa.sa_handler = ev_sighandler; 4143 sa.sa_handler = ev_sighandler;
2795 sigfillset (&sa.sa_mask); 4144 sigfillset (&sa.sa_mask);
2796 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 */
2797 sigaction (w->signum, &sa, 0); 4146 sigaction (w->signum, &sa, 0);
2798 4147
4148 if (origflags & EVFLAG_NOSIGMASK)
4149 {
2799 sigemptyset (&sa.sa_mask); 4150 sigemptyset (&sa.sa_mask);
2800 sigaddset (&sa.sa_mask, w->signum); 4151 sigaddset (&sa.sa_mask, w->signum);
2801 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 4152 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
4153 }
2802#endif 4154#endif
2803 } 4155 }
2804 4156
2805 EV_FREQUENT_CHECK; 4157 EV_FREQUENT_CHECK;
2806} 4158}
2807 4159
2808void noinline 4160noinline
4161void
2809ev_signal_stop (EV_P_ ev_signal *w) 4162ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
2810{ 4163{
2811 clear_pending (EV_A_ (W)w); 4164 clear_pending (EV_A_ (W)w);
2812 if (expect_false (!ev_is_active (w))) 4165 if (expect_false (!ev_is_active (w)))
2813 return; 4166 return;
2814 4167
… …
2840 } 4193 }
2841 4194
2842 EV_FREQUENT_CHECK; 4195 EV_FREQUENT_CHECK;
2843} 4196}
2844 4197
4198#endif
4199
4200#if EV_CHILD_ENABLE
4201
2845void 4202void
2846ev_child_start (EV_P_ ev_child *w) 4203ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
2847{ 4204{
2848#if EV_MULTIPLICITY 4205#if EV_MULTIPLICITY
2849 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));
2850#endif 4207#endif
2851 if (expect_false (ev_is_active (w))) 4208 if (expect_false (ev_is_active (w)))
2852 return; 4209 return;
2853 4210
2854 EV_FREQUENT_CHECK; 4211 EV_FREQUENT_CHECK;
2855 4212
2856 ev_start (EV_A_ (W)w, 1); 4213 ev_start (EV_A_ (W)w, 1);
2857 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4214 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2858 4215
2859 EV_FREQUENT_CHECK; 4216 EV_FREQUENT_CHECK;
2860} 4217}
2861 4218
2862void 4219void
2863ev_child_stop (EV_P_ ev_child *w) 4220ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
2864{ 4221{
2865 clear_pending (EV_A_ (W)w); 4222 clear_pending (EV_A_ (W)w);
2866 if (expect_false (!ev_is_active (w))) 4223 if (expect_false (!ev_is_active (w)))
2867 return; 4224 return;
2868 4225
2869 EV_FREQUENT_CHECK; 4226 EV_FREQUENT_CHECK;
2870 4227
2871 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4228 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2872 ev_stop (EV_A_ (W)w); 4229 ev_stop (EV_A_ (W)w);
2873 4230
2874 EV_FREQUENT_CHECK; 4231 EV_FREQUENT_CHECK;
2875} 4232}
4233
4234#endif
2876 4235
2877#if EV_STAT_ENABLE 4236#if EV_STAT_ENABLE
2878 4237
2879# ifdef _WIN32 4238# ifdef _WIN32
2880# undef lstat 4239# undef lstat
… …
2883 4242
2884#define DEF_STAT_INTERVAL 5.0074891 4243#define DEF_STAT_INTERVAL 5.0074891
2885#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4244#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2886#define MIN_STAT_INTERVAL 0.1074891 4245#define MIN_STAT_INTERVAL 0.1074891
2887 4246
2888static 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);
2889 4248
2890#if EV_USE_INOTIFY 4249#if EV_USE_INOTIFY
2891 4250
2892/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ 4251/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
2893# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4252# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2894 4253
2895static void noinline 4254noinline
4255static void
2896infy_add (EV_P_ ev_stat *w) 4256infy_add (EV_P_ ev_stat *w)
2897{ 4257{
2898 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);
2899 4262
2900 if (w->wd >= 0) 4263 if (w->wd >= 0)
2901 { 4264 {
2902 struct statfs sfs; 4265 struct statfs sfs;
2903 4266
… …
2907 4270
2908 if (!fs_2625) 4271 if (!fs_2625)
2909 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4272 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2910 else if (!statfs (w->path, &sfs) 4273 else if (!statfs (w->path, &sfs)
2911 && (sfs.f_type == 0x1373 /* devfs */ 4274 && (sfs.f_type == 0x1373 /* devfs */
4275 || sfs.f_type == 0x4006 /* fat */
4276 || sfs.f_type == 0x4d44 /* msdos */
2912 || sfs.f_type == 0xEF53 /* ext2/3 */ 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 */
2913 || sfs.f_type == 0x3153464a /* jfs */ 4281 || sfs.f_type == 0x3153464a /* jfs */
4282 || sfs.f_type == 0x9123683e /* btrfs */
2914 || sfs.f_type == 0x52654973 /* reiser3 */ 4283 || sfs.f_type == 0x52654973 /* reiser3 */
2915 || sfs.f_type == 0x01021994 /* tempfs */ 4284 || sfs.f_type == 0x01021994 /* tmpfs */
2916 || sfs.f_type == 0x58465342 /* xfs */)) 4285 || sfs.f_type == 0x58465342 /* xfs */))
2917 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4286 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
2918 else 4287 else
2919 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4288 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2920 } 4289 }
… …
2941 if (!pend || pend == path) 4310 if (!pend || pend == path)
2942 break; 4311 break;
2943 4312
2944 *pend = 0; 4313 *pend = 0;
2945 w->wd = inotify_add_watch (fs_fd, path, mask); 4314 w->wd = inotify_add_watch (fs_fd, path, mask);
2946 } 4315 }
2947 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 4316 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2948 } 4317 }
2949 } 4318 }
2950 4319
2951 if (w->wd >= 0) 4320 if (w->wd >= 0)
2952 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);
2953 4322
2954 /* now re-arm timer, if required */ 4323 /* now re-arm timer, if required */
2955 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4324 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2956 ev_timer_again (EV_A_ &w->timer); 4325 ev_timer_again (EV_A_ &w->timer);
2957 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4326 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2958} 4327}
2959 4328
2960static void noinline 4329noinline
4330static void
2961infy_del (EV_P_ ev_stat *w) 4331infy_del (EV_P_ ev_stat *w)
2962{ 4332{
2963 int slot; 4333 int slot;
2964 int wd = w->wd; 4334 int wd = w->wd;
2965 4335
2966 if (wd < 0) 4336 if (wd < 0)
2967 return; 4337 return;
2968 4338
2969 w->wd = -2; 4339 w->wd = -2;
2970 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 4340 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2971 wlist_del (&fs_hash [slot].head, (WL)w); 4341 wlist_del (&fs_hash [slot].head, (WL)w);
2972 4342
2973 /* remove this watcher, if others are watching it, they will rearm */ 4343 /* remove this watcher, if others are watching it, they will rearm */
2974 inotify_rm_watch (fs_fd, wd); 4344 inotify_rm_watch (fs_fd, wd);
2975} 4345}
2976 4346
2977static void noinline 4347noinline
4348static void
2978infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4349infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2979{ 4350{
2980 if (slot < 0) 4351 if (slot < 0)
2981 /* overflow, need to check for all hash slots */ 4352 /* overflow, need to check for all hash slots */
2982 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4353 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2983 infy_wd (EV_A_ slot, wd, ev); 4354 infy_wd (EV_A_ slot, wd, ev);
2984 else 4355 else
2985 { 4356 {
2986 WL w_; 4357 WL w_;
2987 4358
2988 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 4359 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2989 { 4360 {
2990 ev_stat *w = (ev_stat *)w_; 4361 ev_stat *w = (ev_stat *)w_;
2991 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 */
2992 4363
2993 if (w->wd == wd || wd == -1) 4364 if (w->wd == wd || wd == -1)
2994 { 4365 {
2995 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 4366 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2996 { 4367 {
2997 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);
2998 w->wd = -1; 4369 w->wd = -1;
2999 infy_add (EV_A_ w); /* re-add, no matter what */ 4370 infy_add (EV_A_ w); /* re-add, no matter what */
3000 } 4371 }
3001 4372
3002 stat_timer_cb (EV_A_ &w->timer, 0); 4373 stat_timer_cb (EV_A_ &w->timer, 0);
… …
3018 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4389 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3019 ofs += sizeof (struct inotify_event) + ev->len; 4390 ofs += sizeof (struct inotify_event) + ev->len;
3020 } 4391 }
3021} 4392}
3022 4393
3023inline_size unsigned int
3024ev_linux_version (void)
3025{
3026 struct utsname buf;
3027 unsigned int v;
3028 int i;
3029 char *p = buf.release;
3030
3031 if (uname (&buf))
3032 return 0;
3033
3034 for (i = 3+1; --i; )
3035 {
3036 unsigned int c = 0;
3037
3038 for (;;)
3039 {
3040 if (*p >= '0' && *p <= '9')
3041 c = c * 10 + *p++ - '0';
3042 else
3043 {
3044 p += *p == '.';
3045 break;
3046 }
3047 }
3048
3049 v = (v << 8) | c;
3050 }
3051
3052 return v;
3053}
3054
3055inline_size void 4394inline_size ecb_cold
4395void
3056ev_check_2625 (EV_P) 4396ev_check_2625 (EV_P)
3057{ 4397{
3058 /* kernels < 2.6.25 are borked 4398 /* kernels < 2.6.25 are borked
3059 * 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
3060 */ 4400 */
… …
3065} 4405}
3066 4406
3067inline_size int 4407inline_size int
3068infy_newfd (void) 4408infy_newfd (void)
3069{ 4409{
3070#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4410#if defined IN_CLOEXEC && defined IN_NONBLOCK
3071 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4411 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3072 if (fd >= 0) 4412 if (fd >= 0)
3073 return fd; 4413 return fd;
3074#endif 4414#endif
3075 return inotify_init (); 4415 return inotify_init ();
… …
3116 ev_io_set (&fs_w, fs_fd, EV_READ); 4456 ev_io_set (&fs_w, fs_fd, EV_READ);
3117 ev_io_start (EV_A_ &fs_w); 4457 ev_io_start (EV_A_ &fs_w);
3118 ev_unref (EV_A); 4458 ev_unref (EV_A);
3119 } 4459 }
3120 4460
3121 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4461 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
3122 { 4462 {
3123 WL w_ = fs_hash [slot].head; 4463 WL w_ = fs_hash [slot].head;
3124 fs_hash [slot].head = 0; 4464 fs_hash [slot].head = 0;
3125 4465
3126 while (w_) 4466 while (w_)
… …
3150#else 4490#else
3151# define EV_LSTAT(p,b) lstat (p, b) 4491# define EV_LSTAT(p,b) lstat (p, b)
3152#endif 4492#endif
3153 4493
3154void 4494void
3155ev_stat_stat (EV_P_ ev_stat *w) 4495ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
3156{ 4496{
3157 if (lstat (w->path, &w->attr) < 0) 4497 if (lstat (w->path, &w->attr) < 0)
3158 w->attr.st_nlink = 0; 4498 w->attr.st_nlink = 0;
3159 else if (!w->attr.st_nlink) 4499 else if (!w->attr.st_nlink)
3160 w->attr.st_nlink = 1; 4500 w->attr.st_nlink = 1;
3161} 4501}
3162 4502
3163static void noinline 4503noinline
4504static void
3164stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4505stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3165{ 4506{
3166 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4507 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3167 4508
3168 ev_statdata prev = w->attr; 4509 ev_statdata prev = w->attr;
… …
3199 ev_feed_event (EV_A_ w, EV_STAT); 4540 ev_feed_event (EV_A_ w, EV_STAT);
3200 } 4541 }
3201} 4542}
3202 4543
3203void 4544void
3204ev_stat_start (EV_P_ ev_stat *w) 4545ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
3205{ 4546{
3206 if (expect_false (ev_is_active (w))) 4547 if (expect_false (ev_is_active (w)))
3207 return; 4548 return;
3208 4549
3209 ev_stat_stat (EV_A_ w); 4550 ev_stat_stat (EV_A_ w);
… …
3230 4571
3231 EV_FREQUENT_CHECK; 4572 EV_FREQUENT_CHECK;
3232} 4573}
3233 4574
3234void 4575void
3235ev_stat_stop (EV_P_ ev_stat *w) 4576ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
3236{ 4577{
3237 clear_pending (EV_A_ (W)w); 4578 clear_pending (EV_A_ (W)w);
3238 if (expect_false (!ev_is_active (w))) 4579 if (expect_false (!ev_is_active (w)))
3239 return; 4580 return;
3240 4581
… …
3256} 4597}
3257#endif 4598#endif
3258 4599
3259#if EV_IDLE_ENABLE 4600#if EV_IDLE_ENABLE
3260void 4601void
3261ev_idle_start (EV_P_ ev_idle *w) 4602ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
3262{ 4603{
3263 if (expect_false (ev_is_active (w))) 4604 if (expect_false (ev_is_active (w)))
3264 return; 4605 return;
3265 4606
3266 pri_adjust (EV_A_ (W)w); 4607 pri_adjust (EV_A_ (W)w);
… …
3279 4620
3280 EV_FREQUENT_CHECK; 4621 EV_FREQUENT_CHECK;
3281} 4622}
3282 4623
3283void 4624void
3284ev_idle_stop (EV_P_ ev_idle *w) 4625ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
3285{ 4626{
3286 clear_pending (EV_A_ (W)w); 4627 clear_pending (EV_A_ (W)w);
3287 if (expect_false (!ev_is_active (w))) 4628 if (expect_false (!ev_is_active (w)))
3288 return; 4629 return;
3289 4630
… …
3301 4642
3302 EV_FREQUENT_CHECK; 4643 EV_FREQUENT_CHECK;
3303} 4644}
3304#endif 4645#endif
3305 4646
4647#if EV_PREPARE_ENABLE
3306void 4648void
3307ev_prepare_start (EV_P_ ev_prepare *w) 4649ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
3308{ 4650{
3309 if (expect_false (ev_is_active (w))) 4651 if (expect_false (ev_is_active (w)))
3310 return; 4652 return;
3311 4653
3312 EV_FREQUENT_CHECK; 4654 EV_FREQUENT_CHECK;
… …
3317 4659
3318 EV_FREQUENT_CHECK; 4660 EV_FREQUENT_CHECK;
3319} 4661}
3320 4662
3321void 4663void
3322ev_prepare_stop (EV_P_ ev_prepare *w) 4664ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
3323{ 4665{
3324 clear_pending (EV_A_ (W)w); 4666 clear_pending (EV_A_ (W)w);
3325 if (expect_false (!ev_is_active (w))) 4667 if (expect_false (!ev_is_active (w)))
3326 return; 4668 return;
3327 4669
… …
3336 4678
3337 ev_stop (EV_A_ (W)w); 4679 ev_stop (EV_A_ (W)w);
3338 4680
3339 EV_FREQUENT_CHECK; 4681 EV_FREQUENT_CHECK;
3340} 4682}
4683#endif
3341 4684
4685#if EV_CHECK_ENABLE
3342void 4686void
3343ev_check_start (EV_P_ ev_check *w) 4687ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
3344{ 4688{
3345 if (expect_false (ev_is_active (w))) 4689 if (expect_false (ev_is_active (w)))
3346 return; 4690 return;
3347 4691
3348 EV_FREQUENT_CHECK; 4692 EV_FREQUENT_CHECK;
… …
3353 4697
3354 EV_FREQUENT_CHECK; 4698 EV_FREQUENT_CHECK;
3355} 4699}
3356 4700
3357void 4701void
3358ev_check_stop (EV_P_ ev_check *w) 4702ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
3359{ 4703{
3360 clear_pending (EV_A_ (W)w); 4704 clear_pending (EV_A_ (W)w);
3361 if (expect_false (!ev_is_active (w))) 4705 if (expect_false (!ev_is_active (w)))
3362 return; 4706 return;
3363 4707
… …
3372 4716
3373 ev_stop (EV_A_ (W)w); 4717 ev_stop (EV_A_ (W)w);
3374 4718
3375 EV_FREQUENT_CHECK; 4719 EV_FREQUENT_CHECK;
3376} 4720}
4721#endif
3377 4722
3378#if EV_EMBED_ENABLE 4723#if EV_EMBED_ENABLE
3379void noinline 4724noinline
4725void
3380ev_embed_sweep (EV_P_ ev_embed *w) 4726ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
3381{ 4727{
3382 ev_loop (w->other, EVLOOP_NONBLOCK); 4728 ev_run (w->other, EVRUN_NOWAIT);
3383} 4729}
3384 4730
3385static void 4731static void
3386embed_io_cb (EV_P_ ev_io *io, int revents) 4732embed_io_cb (EV_P_ ev_io *io, int revents)
3387{ 4733{
3388 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4734 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3389 4735
3390 if (ev_cb (w)) 4736 if (ev_cb (w))
3391 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4737 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3392 else 4738 else
3393 ev_loop (w->other, EVLOOP_NONBLOCK); 4739 ev_run (w->other, EVRUN_NOWAIT);
3394} 4740}
3395 4741
3396static void 4742static void
3397embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4743embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3398{ 4744{
… …
3402 EV_P = w->other; 4748 EV_P = w->other;
3403 4749
3404 while (fdchangecnt) 4750 while (fdchangecnt)
3405 { 4751 {
3406 fd_reify (EV_A); 4752 fd_reify (EV_A);
3407 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4753 ev_run (EV_A_ EVRUN_NOWAIT);
3408 } 4754 }
3409 } 4755 }
3410} 4756}
3411 4757
3412static void 4758static void
… …
3418 4764
3419 { 4765 {
3420 EV_P = w->other; 4766 EV_P = w->other;
3421 4767
3422 ev_loop_fork (EV_A); 4768 ev_loop_fork (EV_A);
3423 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4769 ev_run (EV_A_ EVRUN_NOWAIT);
3424 } 4770 }
3425 4771
3426 ev_embed_start (EV_A_ w); 4772 ev_embed_start (EV_A_ w);
3427} 4773}
3428 4774
… …
3433 ev_idle_stop (EV_A_ idle); 4779 ev_idle_stop (EV_A_ idle);
3434} 4780}
3435#endif 4781#endif
3436 4782
3437void 4783void
3438ev_embed_start (EV_P_ ev_embed *w) 4784ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
3439{ 4785{
3440 if (expect_false (ev_is_active (w))) 4786 if (expect_false (ev_is_active (w)))
3441 return; 4787 return;
3442 4788
3443 { 4789 {
… …
3464 4810
3465 EV_FREQUENT_CHECK; 4811 EV_FREQUENT_CHECK;
3466} 4812}
3467 4813
3468void 4814void
3469ev_embed_stop (EV_P_ ev_embed *w) 4815ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
3470{ 4816{
3471 clear_pending (EV_A_ (W)w); 4817 clear_pending (EV_A_ (W)w);
3472 if (expect_false (!ev_is_active (w))) 4818 if (expect_false (!ev_is_active (w)))
3473 return; 4819 return;
3474 4820
… …
3484} 4830}
3485#endif 4831#endif
3486 4832
3487#if EV_FORK_ENABLE 4833#if EV_FORK_ENABLE
3488void 4834void
3489ev_fork_start (EV_P_ ev_fork *w) 4835ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
3490{ 4836{
3491 if (expect_false (ev_is_active (w))) 4837 if (expect_false (ev_is_active (w)))
3492 return; 4838 return;
3493 4839
3494 EV_FREQUENT_CHECK; 4840 EV_FREQUENT_CHECK;
… …
3499 4845
3500 EV_FREQUENT_CHECK; 4846 EV_FREQUENT_CHECK;
3501} 4847}
3502 4848
3503void 4849void
3504ev_fork_stop (EV_P_ ev_fork *w) 4850ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
3505{ 4851{
3506 clear_pending (EV_A_ (W)w); 4852 clear_pending (EV_A_ (W)w);
3507 if (expect_false (!ev_is_active (w))) 4853 if (expect_false (!ev_is_active (w)))
3508 return; 4854 return;
3509 4855
… …
3520 4866
3521 EV_FREQUENT_CHECK; 4867 EV_FREQUENT_CHECK;
3522} 4868}
3523#endif 4869#endif
3524 4870
3525#if EV_ASYNC_ENABLE 4871#if EV_CLEANUP_ENABLE
3526void 4872void
3527ev_async_start (EV_P_ ev_async *w) 4873ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
3528{ 4874{
3529 if (expect_false (ev_is_active (w))) 4875 if (expect_false (ev_is_active (w)))
3530 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;
3531 4920
3532 evpipe_init (EV_A); 4921 evpipe_init (EV_A);
3533 4922
3534 EV_FREQUENT_CHECK; 4923 EV_FREQUENT_CHECK;
3535 4924
… …
3539 4928
3540 EV_FREQUENT_CHECK; 4929 EV_FREQUENT_CHECK;
3541} 4930}
3542 4931
3543void 4932void
3544ev_async_stop (EV_P_ ev_async *w) 4933ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
3545{ 4934{
3546 clear_pending (EV_A_ (W)w); 4935 clear_pending (EV_A_ (W)w);
3547 if (expect_false (!ev_is_active (w))) 4936 if (expect_false (!ev_is_active (w)))
3548 return; 4937 return;
3549 4938
… …
3560 4949
3561 EV_FREQUENT_CHECK; 4950 EV_FREQUENT_CHECK;
3562} 4951}
3563 4952
3564void 4953void
3565ev_async_send (EV_P_ ev_async *w) 4954ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
3566{ 4955{
3567 w->sent = 1; 4956 w->sent = 1;
3568 evpipe_write (EV_A_ &async_pending); 4957 evpipe_write (EV_A_ &async_pending);
3569} 4958}
3570#endif 4959#endif
… …
3607 4996
3608 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));
3609} 4998}
3610 4999
3611void 5000void
3612ev_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
3613{ 5002{
3614 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));
3615 5004
3616 if (expect_false (!once)) 5005 if (expect_false (!once))
3617 { 5006 {
3618 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 5007 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3619 return; 5008 return;
3620 } 5009 }
3621 5010
3622 once->cb = cb; 5011 once->cb = cb;
3623 once->arg = arg; 5012 once->arg = arg;
… …
3638} 5027}
3639 5028
3640/*****************************************************************************/ 5029/*****************************************************************************/
3641 5030
3642#if EV_WALK_ENABLE 5031#if EV_WALK_ENABLE
5032ecb_cold
3643void 5033void
3644ev_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
3645{ 5035{
3646 int i, j; 5036 int i, j;
3647 ev_watcher_list *wl, *wn; 5037 ev_watcher_list *wl, *wn;
3648 5038
3649 if (types & (EV_IO | EV_EMBED)) 5039 if (types & (EV_IO | EV_EMBED))
… …
3692 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 5082 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3693#endif 5083#endif
3694 5084
3695#if EV_IDLE_ENABLE 5085#if EV_IDLE_ENABLE
3696 if (types & EV_IDLE) 5086 if (types & EV_IDLE)
3697 for (j = NUMPRI; i--; ) 5087 for (j = NUMPRI; j--; )
3698 for (i = idlecnt [j]; i--; ) 5088 for (i = idlecnt [j]; i--; )
3699 cb (EV_A_ EV_IDLE, idles [j][i]); 5089 cb (EV_A_ EV_IDLE, idles [j][i]);
3700#endif 5090#endif
3701 5091
3702#if EV_FORK_ENABLE 5092#if EV_FORK_ENABLE
… …
3710 if (types & EV_ASYNC) 5100 if (types & EV_ASYNC)
3711 for (i = asynccnt; i--; ) 5101 for (i = asynccnt; i--; )
3712 cb (EV_A_ EV_ASYNC, asyncs [i]); 5102 cb (EV_A_ EV_ASYNC, asyncs [i]);
3713#endif 5103#endif
3714 5104
5105#if EV_PREPARE_ENABLE
3715 if (types & EV_PREPARE) 5106 if (types & EV_PREPARE)
3716 for (i = preparecnt; i--; ) 5107 for (i = preparecnt; i--; )
3717#if EV_EMBED_ENABLE 5108# if EV_EMBED_ENABLE
3718 if (ev_cb (prepares [i]) != embed_prepare_cb) 5109 if (ev_cb (prepares [i]) != embed_prepare_cb)
3719#endif 5110# endif
3720 cb (EV_A_ EV_PREPARE, prepares [i]); 5111 cb (EV_A_ EV_PREPARE, prepares [i]);
5112#endif
3721 5113
5114#if EV_CHECK_ENABLE
3722 if (types & EV_CHECK) 5115 if (types & EV_CHECK)
3723 for (i = checkcnt; i--; ) 5116 for (i = checkcnt; i--; )
3724 cb (EV_A_ EV_CHECK, checks [i]); 5117 cb (EV_A_ EV_CHECK, checks [i]);
5118#endif
3725 5119
5120#if EV_SIGNAL_ENABLE
3726 if (types & EV_SIGNAL) 5121 if (types & EV_SIGNAL)
3727 for (i = 0; i < EV_NSIG - 1; ++i) 5122 for (i = 0; i < EV_NSIG - 1; ++i)
3728 for (wl = signals [i].head; wl; ) 5123 for (wl = signals [i].head; wl; )
3729 { 5124 {
3730 wn = wl->next; 5125 wn = wl->next;
3731 cb (EV_A_ EV_SIGNAL, wl); 5126 cb (EV_A_ EV_SIGNAL, wl);
3732 wl = wn; 5127 wl = wn;
3733 } 5128 }
5129#endif
3734 5130
5131#if EV_CHILD_ENABLE
3735 if (types & EV_CHILD) 5132 if (types & EV_CHILD)
3736 for (i = EV_PID_HASHSIZE; i--; ) 5133 for (i = (EV_PID_HASHSIZE); i--; )
3737 for (wl = childs [i]; wl; ) 5134 for (wl = childs [i]; wl; )
3738 { 5135 {
3739 wn = wl->next; 5136 wn = wl->next;
3740 cb (EV_A_ EV_CHILD, wl); 5137 cb (EV_A_ EV_CHILD, wl);
3741 wl = wn; 5138 wl = wn;
3742 } 5139 }
5140#endif
3743/* EV_STAT 0x00001000 /* stat data changed */ 5141/* EV_STAT 0x00001000 /* stat data changed */
3744/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 5142/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3745} 5143}
3746#endif 5144#endif
3747 5145
3748#if EV_MULTIPLICITY 5146#if EV_MULTIPLICITY
3749 #include "ev_wrap.h" 5147 #include "ev_wrap.h"
3750#endif 5148#endif
3751 5149
3752#ifdef __cplusplus
3753}
3754#endif
3755

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