ViewVC Help
View File | Revision Log | Show Annotations | Download File
/cvs/libev/ev.c
(Generate patch)

Comparing libev/ev.c (file contents):
Revision 1.306 by root, Sun Jul 19 06:35:25 2009 UTC vs.
Revision 1.472 by root, Tue Sep 9 13:24:13 2014 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010,2011,2012,2013 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
10 * 1. Redistributions of source code must retain the above copyright notice, 10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer. 11 * this list of conditions and the following disclaimer.
12 * 12 *
13 * 2. Redistributions in binary form must reproduce the above copyright 13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the 14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution. 15 * documentation and/or other materials provided with the distribution.
16 * 16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- 18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO 19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- 20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
… …
35 * and other provisions required by the GPL. If you do not delete the 35 * and other provisions required by the GPL. If you do not delete the
36 * provisions above, a recipient may use your version of this file under 36 * provisions above, a recipient may use your version of this file under
37 * either the BSD or the GPL. 37 * either the BSD or the GPL.
38 */ 38 */
39 39
40#ifdef __cplusplus
41extern "C" {
42#endif
43
44/* this big block deduces configuration from config.h */ 40/* this big block deduces configuration from config.h */
45#ifndef EV_STANDALONE 41#ifndef EV_STANDALONE
46# ifdef EV_CONFIG_H 42# ifdef EV_CONFIG_H
47# include EV_CONFIG_H 43# include EV_CONFIG_H
48# else 44# else
49# include "config.h" 45# include "config.h"
46# endif
47
48# if HAVE_FLOOR
49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1
51# endif
50# endif 52# endif
51 53
52# if HAVE_CLOCK_SYSCALL 54# if HAVE_CLOCK_SYSCALL
53# ifndef EV_USE_CLOCK_SYSCALL 55# ifndef EV_USE_CLOCK_SYSCALL
54# define EV_USE_CLOCK_SYSCALL 1 56# define EV_USE_CLOCK_SYSCALL 1
… …
57# endif 59# endif
58# ifndef EV_USE_MONOTONIC 60# ifndef EV_USE_MONOTONIC
59# define EV_USE_MONOTONIC 1 61# define EV_USE_MONOTONIC 1
60# endif 62# endif
61# endif 63# endif
62# elif !defined(EV_USE_CLOCK_SYSCALL) 64# elif !defined EV_USE_CLOCK_SYSCALL
63# define EV_USE_CLOCK_SYSCALL 0 65# define EV_USE_CLOCK_SYSCALL 0
64# endif 66# endif
65 67
66# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
67# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
… …
77# ifndef EV_USE_REALTIME 79# ifndef EV_USE_REALTIME
78# define EV_USE_REALTIME 0 80# define EV_USE_REALTIME 0
79# endif 81# endif
80# endif 82# endif
81 83
84# if HAVE_NANOSLEEP
82# ifndef EV_USE_NANOSLEEP 85# ifndef EV_USE_NANOSLEEP
83# if HAVE_NANOSLEEP
84# define EV_USE_NANOSLEEP 1 86# define EV_USE_NANOSLEEP EV_FEATURE_OS
87# endif
85# else 88# else
89# undef EV_USE_NANOSLEEP
86# define EV_USE_NANOSLEEP 0 90# define EV_USE_NANOSLEEP 0
91# endif
92
93# if HAVE_SELECT && HAVE_SYS_SELECT_H
94# ifndef EV_USE_SELECT
95# define EV_USE_SELECT EV_FEATURE_BACKENDS
87# endif 96# endif
97# else
98# undef EV_USE_SELECT
99# define EV_USE_SELECT 0
88# endif 100# endif
89 101
102# if HAVE_POLL && HAVE_POLL_H
90# ifndef EV_USE_SELECT 103# ifndef EV_USE_POLL
91# if HAVE_SELECT && HAVE_SYS_SELECT_H 104# define EV_USE_POLL EV_FEATURE_BACKENDS
92# define EV_USE_SELECT 1
93# else
94# define EV_USE_SELECT 0
95# endif 105# endif
96# endif
97
98# ifndef EV_USE_POLL
99# if HAVE_POLL && HAVE_POLL_H
100# define EV_USE_POLL 1
101# else 106# else
107# undef EV_USE_POLL
102# define EV_USE_POLL 0 108# define EV_USE_POLL 0
103# endif
104# endif 109# endif
105 110
106# ifndef EV_USE_EPOLL
107# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 111# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
108# define EV_USE_EPOLL 1 112# ifndef EV_USE_EPOLL
109# else 113# define EV_USE_EPOLL EV_FEATURE_BACKENDS
110# define EV_USE_EPOLL 0
111# endif 114# endif
115# else
116# undef EV_USE_EPOLL
117# define EV_USE_EPOLL 0
112# endif 118# endif
113 119
120# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
114# ifndef EV_USE_KQUEUE 121# ifndef EV_USE_KQUEUE
115# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 122# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
116# define EV_USE_KQUEUE 1
117# else
118# define EV_USE_KQUEUE 0
119# endif 123# endif
124# else
125# undef EV_USE_KQUEUE
126# define EV_USE_KQUEUE 0
120# endif 127# endif
121 128
122# ifndef EV_USE_PORT
123# if HAVE_PORT_H && HAVE_PORT_CREATE 129# if HAVE_PORT_H && HAVE_PORT_CREATE
124# define EV_USE_PORT 1 130# ifndef EV_USE_PORT
125# else 131# define EV_USE_PORT EV_FEATURE_BACKENDS
126# define EV_USE_PORT 0
127# endif 132# endif
133# else
134# undef EV_USE_PORT
135# define EV_USE_PORT 0
128# endif 136# endif
129 137
130# ifndef EV_USE_INOTIFY
131# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 138# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
132# define EV_USE_INOTIFY 1 139# ifndef EV_USE_INOTIFY
133# else
134# define EV_USE_INOTIFY 0 140# define EV_USE_INOTIFY EV_FEATURE_OS
135# endif 141# endif
142# else
143# undef EV_USE_INOTIFY
144# define EV_USE_INOTIFY 0
136# endif 145# endif
137 146
138# ifndef EV_USE_SIGNALFD
139# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H 147# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
140# define EV_USE_SIGNALFD 1 148# ifndef EV_USE_SIGNALFD
141# else
142# define EV_USE_SIGNALFD 0 149# define EV_USE_SIGNALFD EV_FEATURE_OS
143# endif 150# endif
151# else
152# undef EV_USE_SIGNALFD
153# define EV_USE_SIGNALFD 0
144# endif 154# endif
145 155
156# if HAVE_EVENTFD
146# ifndef EV_USE_EVENTFD 157# ifndef EV_USE_EVENTFD
147# if HAVE_EVENTFD
148# define EV_USE_EVENTFD 1 158# define EV_USE_EVENTFD EV_FEATURE_OS
149# else
150# define EV_USE_EVENTFD 0
151# endif 159# endif
160# else
161# undef EV_USE_EVENTFD
162# define EV_USE_EVENTFD 0
152# endif 163# endif
153 164
154#endif 165#endif
155 166
156#include <math.h>
157#include <stdlib.h> 167#include <stdlib.h>
168#include <string.h>
158#include <fcntl.h> 169#include <fcntl.h>
159#include <stddef.h> 170#include <stddef.h>
160 171
161#include <stdio.h> 172#include <stdio.h>
162 173
163#include <assert.h> 174#include <assert.h>
164#include <errno.h> 175#include <errno.h>
165#include <sys/types.h> 176#include <sys/types.h>
166#include <time.h> 177#include <time.h>
178#include <limits.h>
167 179
168#include <signal.h> 180#include <signal.h>
169 181
170#ifdef EV_H 182#ifdef EV_H
171# include EV_H 183# include EV_H
172#else 184#else
173# include "ev.h" 185# include "ev.h"
186#endif
187
188#if EV_NO_THREADS
189# undef EV_NO_SMP
190# define EV_NO_SMP 1
191# undef ECB_NO_THREADS
192# define ECB_NO_THREADS 1
193#endif
194#if EV_NO_SMP
195# undef EV_NO_SMP
196# define ECB_NO_SMP 1
174#endif 197#endif
175 198
176#ifndef _WIN32 199#ifndef _WIN32
177# include <sys/time.h> 200# include <sys/time.h>
178# include <sys/wait.h> 201# include <sys/wait.h>
179# include <unistd.h> 202# include <unistd.h>
180#else 203#else
181# include <io.h> 204# include <io.h>
182# define WIN32_LEAN_AND_MEAN 205# define WIN32_LEAN_AND_MEAN
206# include <winsock2.h>
183# include <windows.h> 207# include <windows.h>
184# ifndef EV_SELECT_IS_WINSOCKET 208# ifndef EV_SELECT_IS_WINSOCKET
185# define EV_SELECT_IS_WINSOCKET 1 209# define EV_SELECT_IS_WINSOCKET 1
186# endif 210# endif
211# undef EV_AVOID_STDIO
187#endif 212#endif
213
214/* OS X, in its infinite idiocy, actually HARDCODES
215 * a limit of 1024 into their select. Where people have brains,
216 * OS X engineers apparently have a vacuum. Or maybe they were
217 * ordered to have a vacuum, or they do anything for money.
218 * This might help. Or not.
219 */
220#define _DARWIN_UNLIMITED_SELECT 1
188 221
189/* this block tries to deduce configuration from header-defined symbols and defaults */ 222/* this block tries to deduce configuration from header-defined symbols and defaults */
190 223
191/* try to deduce the maximum number of signals on this platform */ 224/* try to deduce the maximum number of signals on this platform */
192/* one some platforms, NSIG is one too large. we do not bother */
193#if defined (EV_NSIG) 225#if defined EV_NSIG
194/* use what's provided */ 226/* use what's provided */
195#elif defined (NSIG) 227#elif defined NSIG
196# define EV_NSIG (NSIG) 228# define EV_NSIG (NSIG)
197#elif defined(_NSIG) 229#elif defined _NSIG
198# define EV_NSIG (_NSIG) 230# define EV_NSIG (_NSIG)
199#elif defined (SIGMAX) 231#elif defined SIGMAX
200# define EV_NSIG (SIGMAX+1) 232# define EV_NSIG (SIGMAX+1)
201#elif defined (SIG_MAX) 233#elif defined SIG_MAX
202# define EV_NSIG (SIG_MAX+1) 234# define EV_NSIG (SIG_MAX+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 (MAXSIG) 237#elif defined MAXSIG
206# define EV_NSIG (MAXSIG+1) 238# define EV_NSIG (MAXSIG+1)
207#elif defined (MAX_SIG) 239#elif defined MAX_SIG
208# define EV_NSIG (MAX_SIG+1) 240# define EV_NSIG (MAX_SIG+1)
209#elif defined (SIGARRAYSIZE) 241#elif defined SIGARRAYSIZE
210# define EV_NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */ 242# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
211#elif defined (_sys_nsig) 243#elif defined _sys_nsig
212# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 244# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
213#else 245#else
214# error "unable to find value for NSIG, please report" 246# define EV_NSIG (8 * sizeof (sigset_t) + 1)
215/* to make it compile regardless, just remove the above line */ 247#endif
216# define EV_NSIG 65 248
249#ifndef EV_USE_FLOOR
250# define EV_USE_FLOOR 0
217#endif 251#endif
218 252
219#ifndef EV_USE_CLOCK_SYSCALL 253#ifndef EV_USE_CLOCK_SYSCALL
220# if __linux && __GLIBC__ >= 2 254# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
221# define EV_USE_CLOCK_SYSCALL 1 255# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
222# else 256# else
223# define EV_USE_CLOCK_SYSCALL 0 257# define EV_USE_CLOCK_SYSCALL 0
224# endif 258# endif
225#endif 259#endif
226 260
261#if !(_POSIX_TIMERS > 0)
262# ifndef EV_USE_MONOTONIC
263# define EV_USE_MONOTONIC 0
264# endif
265# ifndef EV_USE_REALTIME
266# define EV_USE_REALTIME 0
267# endif
268#endif
269
227#ifndef EV_USE_MONOTONIC 270#ifndef EV_USE_MONOTONIC
228# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 271# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
229# define EV_USE_MONOTONIC 1 272# define EV_USE_MONOTONIC EV_FEATURE_OS
230# else 273# else
231# define EV_USE_MONOTONIC 0 274# define EV_USE_MONOTONIC 0
232# endif 275# endif
233#endif 276#endif
234 277
… …
236# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 279# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
237#endif 280#endif
238 281
239#ifndef EV_USE_NANOSLEEP 282#ifndef EV_USE_NANOSLEEP
240# if _POSIX_C_SOURCE >= 199309L 283# if _POSIX_C_SOURCE >= 199309L
241# define EV_USE_NANOSLEEP 1 284# define EV_USE_NANOSLEEP EV_FEATURE_OS
242# else 285# else
243# define EV_USE_NANOSLEEP 0 286# define EV_USE_NANOSLEEP 0
244# endif 287# endif
245#endif 288#endif
246 289
247#ifndef EV_USE_SELECT 290#ifndef EV_USE_SELECT
248# define EV_USE_SELECT 1 291# define EV_USE_SELECT EV_FEATURE_BACKENDS
249#endif 292#endif
250 293
251#ifndef EV_USE_POLL 294#ifndef EV_USE_POLL
252# ifdef _WIN32 295# ifdef _WIN32
253# define EV_USE_POLL 0 296# define EV_USE_POLL 0
254# else 297# else
255# define EV_USE_POLL 1 298# define EV_USE_POLL EV_FEATURE_BACKENDS
256# endif 299# endif
257#endif 300#endif
258 301
259#ifndef EV_USE_EPOLL 302#ifndef EV_USE_EPOLL
260# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 303# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
261# define EV_USE_EPOLL 1 304# define EV_USE_EPOLL EV_FEATURE_BACKENDS
262# else 305# else
263# define EV_USE_EPOLL 0 306# define EV_USE_EPOLL 0
264# endif 307# endif
265#endif 308#endif
266 309
… …
272# define EV_USE_PORT 0 315# define EV_USE_PORT 0
273#endif 316#endif
274 317
275#ifndef EV_USE_INOTIFY 318#ifndef EV_USE_INOTIFY
276# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 319# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
277# define EV_USE_INOTIFY 1 320# define EV_USE_INOTIFY EV_FEATURE_OS
278# else 321# else
279# define EV_USE_INOTIFY 0 322# define EV_USE_INOTIFY 0
280# endif 323# endif
281#endif 324#endif
282 325
283#ifndef EV_PID_HASHSIZE 326#ifndef EV_PID_HASHSIZE
284# if EV_MINIMAL 327# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
285# define EV_PID_HASHSIZE 1
286# else
287# define EV_PID_HASHSIZE 16
288# endif
289#endif 328#endif
290 329
291#ifndef EV_INOTIFY_HASHSIZE 330#ifndef EV_INOTIFY_HASHSIZE
292# if EV_MINIMAL 331# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
293# define EV_INOTIFY_HASHSIZE 1
294# else
295# define EV_INOTIFY_HASHSIZE 16
296# endif
297#endif 332#endif
298 333
299#ifndef EV_USE_EVENTFD 334#ifndef EV_USE_EVENTFD
300# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 335# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
301# define EV_USE_EVENTFD 1 336# define EV_USE_EVENTFD EV_FEATURE_OS
302# else 337# else
303# define EV_USE_EVENTFD 0 338# define EV_USE_EVENTFD 0
304# endif 339# endif
305#endif 340#endif
306 341
307#ifndef EV_USE_SIGNALFD 342#ifndef EV_USE_SIGNALFD
308# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 9)) 343# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
309# define EV_USE_SIGNALFD 1 344# define EV_USE_SIGNALFD EV_FEATURE_OS
310# else 345# else
311# define EV_USE_SIGNALFD 0 346# define EV_USE_SIGNALFD 0
312# endif 347# endif
313#endif 348#endif
314 349
… …
317# define EV_USE_4HEAP 1 352# define EV_USE_4HEAP 1
318# define EV_HEAP_CACHE_AT 1 353# define EV_HEAP_CACHE_AT 1
319#endif 354#endif
320 355
321#ifndef EV_VERIFY 356#ifndef EV_VERIFY
322# define EV_VERIFY !EV_MINIMAL 357# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
323#endif 358#endif
324 359
325#ifndef EV_USE_4HEAP 360#ifndef EV_USE_4HEAP
326# define EV_USE_4HEAP !EV_MINIMAL 361# define EV_USE_4HEAP EV_FEATURE_DATA
327#endif 362#endif
328 363
329#ifndef EV_HEAP_CACHE_AT 364#ifndef EV_HEAP_CACHE_AT
330# define EV_HEAP_CACHE_AT !EV_MINIMAL 365# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
366#endif
367
368#ifdef ANDROID
369/* supposedly, android doesn't typedef fd_mask */
370# undef EV_USE_SELECT
371# define EV_USE_SELECT 0
372/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
373# undef EV_USE_CLOCK_SYSCALL
374# define EV_USE_CLOCK_SYSCALL 0
375#endif
376
377/* aix's poll.h seems to cause lots of trouble */
378#ifdef _AIX
379/* AIX has a completely broken poll.h header */
380# undef EV_USE_POLL
381# define EV_USE_POLL 0
331#endif 382#endif
332 383
333/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 384/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
334/* which makes programs even slower. might work on other unices, too. */ 385/* which makes programs even slower. might work on other unices, too. */
335#if EV_USE_CLOCK_SYSCALL 386#if EV_USE_CLOCK_SYSCALL
336# include <syscall.h> 387# include <sys/syscall.h>
337# ifdef SYS_clock_gettime 388# ifdef SYS_clock_gettime
338# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 389# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
339# undef EV_USE_MONOTONIC 390# undef EV_USE_MONOTONIC
340# define EV_USE_MONOTONIC 1 391# define EV_USE_MONOTONIC 1
341# else 392# else
… …
360# undef EV_USE_INOTIFY 411# undef EV_USE_INOTIFY
361# define EV_USE_INOTIFY 0 412# define EV_USE_INOTIFY 0
362#endif 413#endif
363 414
364#if !EV_USE_NANOSLEEP 415#if !EV_USE_NANOSLEEP
365# ifndef _WIN32 416/* hp-ux has it in sys/time.h, which we unconditionally include above */
417# if !defined _WIN32 && !defined __hpux
366# include <sys/select.h> 418# include <sys/select.h>
367# endif 419# endif
368#endif 420#endif
369 421
370#if EV_USE_INOTIFY 422#if EV_USE_INOTIFY
371# include <sys/utsname.h>
372# include <sys/statfs.h> 423# include <sys/statfs.h>
373# include <sys/inotify.h> 424# include <sys/inotify.h>
374/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 425/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
375# ifndef IN_DONT_FOLLOW 426# ifndef IN_DONT_FOLLOW
376# undef EV_USE_INOTIFY 427# undef EV_USE_INOTIFY
377# define EV_USE_INOTIFY 0 428# define EV_USE_INOTIFY 0
378# endif 429# endif
379#endif 430#endif
380 431
381#if EV_SELECT_IS_WINSOCKET
382# include <winsock.h>
383#endif
384
385#if EV_USE_EVENTFD 432#if EV_USE_EVENTFD
386/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 433/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
387# include <stdint.h> 434# include <stdint.h>
388# ifndef EFD_NONBLOCK 435# ifndef EFD_NONBLOCK
389# define EFD_NONBLOCK O_NONBLOCK 436# define EFD_NONBLOCK O_NONBLOCK
390# endif 437# endif
391# ifndef EFD_CLOEXEC 438# ifndef EFD_CLOEXEC
439# ifdef O_CLOEXEC
392# define EFD_CLOEXEC O_CLOEXEC 440# define EFD_CLOEXEC O_CLOEXEC
441# else
442# define EFD_CLOEXEC 02000000
443# endif
393# endif 444# endif
394# ifdef __cplusplus 445EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
395extern "C" { 446#endif
447
448#if EV_USE_SIGNALFD
449/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
450# include <stdint.h>
451# ifndef SFD_NONBLOCK
452# define SFD_NONBLOCK O_NONBLOCK
396# endif 453# endif
397int eventfd (unsigned int initval, int flags); 454# ifndef SFD_CLOEXEC
398# ifdef __cplusplus 455# ifdef O_CLOEXEC
399} 456# define SFD_CLOEXEC O_CLOEXEC
457# else
458# define SFD_CLOEXEC 02000000
459# endif
400# endif 460# endif
401#endif 461EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
402 462
403#if EV_USE_SIGNALFD 463struct signalfd_siginfo
404# include <sys/signalfd.h> 464{
465 uint32_t ssi_signo;
466 char pad[128 - sizeof (uint32_t)];
467};
405#endif 468#endif
406 469
407/**/ 470/**/
408 471
409#if EV_VERIFY >= 3 472#if EV_VERIFY >= 3
410# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 473# define EV_FREQUENT_CHECK ev_verify (EV_A)
411#else 474#else
412# define EV_FREQUENT_CHECK do { } while (0) 475# define EV_FREQUENT_CHECK do { } while (0)
413#endif 476#endif
414 477
415/* 478/*
416 * This is used to avoid floating point rounding problems. 479 * This is used to work around floating point rounding problems.
417 * It is added to ev_rt_now when scheduling periodics
418 * to ensure progress, time-wise, even when rounding
419 * errors are against us.
420 * This value is good at least till the year 4000. 480 * This value is good at least till the year 4000.
421 * Better solutions welcome.
422 */ 481 */
423#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 482#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
483/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
424 484
425#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 485#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
426#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 486#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
427/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
428 487
488#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
489#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
490
491/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
492/* ECB.H BEGIN */
493/*
494 * libecb - http://software.schmorp.de/pkg/libecb
495 *
496 * Copyright (©) 2009-2014 Marc Alexander Lehmann <libecb@schmorp.de>
497 * Copyright (©) 2011 Emanuele Giaquinta
498 * All rights reserved.
499 *
500 * Redistribution and use in source and binary forms, with or without modifica-
501 * tion, are permitted provided that the following conditions are met:
502 *
503 * 1. Redistributions of source code must retain the above copyright notice,
504 * this list of conditions and the following disclaimer.
505 *
506 * 2. Redistributions in binary form must reproduce the above copyright
507 * notice, this list of conditions and the following disclaimer in the
508 * documentation and/or other materials provided with the distribution.
509 *
510 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
511 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
512 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
513 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
514 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
515 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
516 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
517 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
518 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
519 * OF THE POSSIBILITY OF SUCH DAMAGE.
520 *
521 * Alternatively, the contents of this file may be used under the terms of
522 * the GNU General Public License ("GPL") version 2 or any later version,
523 * in which case the provisions of the GPL are applicable instead of
524 * the above. If you wish to allow the use of your version of this file
525 * only under the terms of the GPL and not to allow others to use your
526 * version of this file under the BSD license, indicate your decision
527 * by deleting the provisions above and replace them with the notice
528 * and other provisions required by the GPL. If you do not delete the
529 * provisions above, a recipient may use your version of this file under
530 * either the BSD or the GPL.
531 */
532
533#ifndef ECB_H
534#define ECB_H
535
536/* 16 bits major, 16 bits minor */
537#define ECB_VERSION 0x00010003
538
539#ifdef _WIN32
540 typedef signed char int8_t;
541 typedef unsigned char uint8_t;
542 typedef signed short int16_t;
543 typedef unsigned short uint16_t;
544 typedef signed int int32_t;
545 typedef unsigned int uint32_t;
429#if __GNUC__ >= 4 546 #if __GNUC__
430# define expect(expr,value) __builtin_expect ((expr),(value)) 547 typedef signed long long int64_t;
431# define noinline __attribute__ ((noinline)) 548 typedef unsigned long long uint64_t;
549 #else /* _MSC_VER || __BORLANDC__ */
550 typedef signed __int64 int64_t;
551 typedef unsigned __int64 uint64_t;
552 #endif
553 #ifdef _WIN64
554 #define ECB_PTRSIZE 8
555 typedef uint64_t uintptr_t;
556 typedef int64_t intptr_t;
557 #else
558 #define ECB_PTRSIZE 4
559 typedef uint32_t uintptr_t;
560 typedef int32_t intptr_t;
561 #endif
432#else 562#else
433# define expect(expr,value) (expr) 563 #include <inttypes.h>
434# define noinline 564 #if UINTMAX_MAX > 0xffffffffU
435# if __STDC_VERSION__ < 199901L && __GNUC__ < 2 565 #define ECB_PTRSIZE 8
436# define inline 566 #else
567 #define ECB_PTRSIZE 4
568 #endif
437# endif 569#endif
570
571/* work around x32 idiocy by defining proper macros */
572#if __amd64 || __x86_64 || _M_AMD64 || _M_X64
573 #if _ILP32
574 #define ECB_AMD64_X32 1
575 #else
576 #define ECB_AMD64 1
438#endif 577 #endif
578#endif
439 579
580/* many compilers define _GNUC_ to some versions but then only implement
581 * what their idiot authors think are the "more important" extensions,
582 * causing enormous grief in return for some better fake benchmark numbers.
583 * or so.
584 * we try to detect these and simply assume they are not gcc - if they have
585 * an issue with that they should have done it right in the first place.
586 */
587#ifndef ECB_GCC_VERSION
588 #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
589 #define ECB_GCC_VERSION(major,minor) 0
590 #else
591 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
592 #endif
593#endif
594
595#define ECB_CPP (__cplusplus+0)
596#define ECB_CPP11 (__cplusplus >= 201103L)
597
598#if ECB_CPP
599 #define ECB_C 0
600 #define ECB_STDC_VERSION 0
601#else
602 #define ECB_C 1
603 #define ECB_STDC_VERSION __STDC_VERSION__
604#endif
605
606#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
607#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
608
609#if ECB_CPP
610 #define ECB_EXTERN_C extern "C"
611 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
612 #define ECB_EXTERN_C_END }
613#else
614 #define ECB_EXTERN_C extern
615 #define ECB_EXTERN_C_BEG
616 #define ECB_EXTERN_C_END
617#endif
618
619/*****************************************************************************/
620
621/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
622/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
623
624#if ECB_NO_THREADS
625 #define ECB_NO_SMP 1
626#endif
627
628#if ECB_NO_SMP
629 #define ECB_MEMORY_FENCE do { } while (0)
630#endif
631
632#ifndef ECB_MEMORY_FENCE
633 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
634 #if __i386 || __i386__
635 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
636 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
637 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
638 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__
639 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
640 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
641 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
642 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
643 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
644 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
645 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
646 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
647 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
648 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
649 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
650 #elif __aarch64__
651 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
652 #elif (__sparc || __sparc__) && !__sparcv8
653 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
654 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
655 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
656 #elif defined __s390__ || defined __s390x__
657 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
658 #elif defined __mips__
659 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
660 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
661 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
662 #elif defined __alpha__
663 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
664 #elif defined __hppa__
665 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
666 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
667 #elif defined __ia64__
668 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
669 #elif defined __m68k__
670 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
671 #elif defined __m88k__
672 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
673 #elif defined __sh__
674 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
675 #endif
676 #endif
677#endif
678
679#ifndef ECB_MEMORY_FENCE
680 #if ECB_GCC_VERSION(4,7)
681 /* see comment below (stdatomic.h) about the C11 memory model. */
682 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
683 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
684 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
685
686 /* The __has_feature syntax from clang is so misdesigned that we cannot use it
687 * without risking compile time errors with other compilers. We *could*
688 * define our own ecb_clang_has_feature, but I just can't be bothered to work
689 * around this shit time and again.
690 * #elif defined __clang && __has_feature (cxx_atomic)
691 * // see comment below (stdatomic.h) about the C11 memory model.
692 * #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
693 * #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
694 * #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
695 */
696
697 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
698 #define ECB_MEMORY_FENCE __sync_synchronize ()
699 #elif _MSC_VER >= 1500 /* VC++ 2008 */
700 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
701 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
702 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
703 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
704 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
705 #elif _MSC_VER >= 1400 /* VC++ 2005 */
706 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
707 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
708 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
709 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
710 #elif defined _WIN32
711 #include <WinNT.h>
712 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
713 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
714 #include <mbarrier.h>
715 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
716 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
717 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
718 #elif __xlC__
719 #define ECB_MEMORY_FENCE __sync ()
720 #endif
721#endif
722
723#ifndef ECB_MEMORY_FENCE
724 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
725 /* we assume that these memory fences work on all variables/all memory accesses, */
726 /* not just C11 atomics and atomic accesses */
727 #include <stdatomic.h>
728 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
729 /* any fence other than seq_cst, which isn't very efficient for us. */
730 /* Why that is, we don't know - either the C11 memory model is quite useless */
731 /* for most usages, or gcc and clang have a bug */
732 /* I *currently* lean towards the latter, and inefficiently implement */
733 /* all three of ecb's fences as a seq_cst fence */
734 /* Update, gcc-4.8 generates mfence for all c++ fences, but nothing */
735 /* for all __atomic_thread_fence's except seq_cst */
736 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
737 #endif
738#endif
739
740#ifndef ECB_MEMORY_FENCE
741 #if !ECB_AVOID_PTHREADS
742 /*
743 * if you get undefined symbol references to pthread_mutex_lock,
744 * or failure to find pthread.h, then you should implement
745 * the ECB_MEMORY_FENCE operations for your cpu/compiler
746 * OR provide pthread.h and link against the posix thread library
747 * of your system.
748 */
749 #include <pthread.h>
750 #define ECB_NEEDS_PTHREADS 1
751 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
752
753 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
754 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
755 #endif
756#endif
757
758#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
759 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
760#endif
761
762#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
763 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
764#endif
765
766/*****************************************************************************/
767
768#if __cplusplus
769 #define ecb_inline static inline
770#elif ECB_GCC_VERSION(2,5)
771 #define ecb_inline static __inline__
772#elif ECB_C99
773 #define ecb_inline static inline
774#else
775 #define ecb_inline static
776#endif
777
778#if ECB_GCC_VERSION(3,3)
779 #define ecb_restrict __restrict__
780#elif ECB_C99
781 #define ecb_restrict restrict
782#else
783 #define ecb_restrict
784#endif
785
786typedef int ecb_bool;
787
788#define ECB_CONCAT_(a, b) a ## b
789#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
790#define ECB_STRINGIFY_(a) # a
791#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
792
793#define ecb_function_ ecb_inline
794
795#if ECB_GCC_VERSION(3,1)
796 #define ecb_attribute(attrlist) __attribute__(attrlist)
797 #define ecb_is_constant(expr) __builtin_constant_p (expr)
798 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
799 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
800#else
801 #define ecb_attribute(attrlist)
802
803 /* possible C11 impl for integral types
804 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
805 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
806
807 #define ecb_is_constant(expr) 0
808 #define ecb_expect(expr,value) (expr)
809 #define ecb_prefetch(addr,rw,locality)
810#endif
811
812/* no emulation for ecb_decltype */
813#if ECB_GCC_VERSION(4,5)
814 #define ecb_decltype(x) __decltype(x)
815#elif ECB_GCC_VERSION(3,0)
816 #define ecb_decltype(x) __typeof(x)
817#endif
818
819#if _MSC_VER >= 1300
820 #define ecb_deprecated __declspec(deprecated)
821#else
822 #define ecb_deprecated ecb_attribute ((__deprecated__))
823#endif
824
825#define ecb_noinline ecb_attribute ((__noinline__))
826#define ecb_unused ecb_attribute ((__unused__))
827#define ecb_const ecb_attribute ((__const__))
828#define ecb_pure ecb_attribute ((__pure__))
829
830/* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx __declspec(noreturn) */
831#if ECB_C11
832 #define ecb_noreturn _Noreturn
833#else
834 #define ecb_noreturn ecb_attribute ((__noreturn__))
835#endif
836
837#if ECB_GCC_VERSION(4,3)
838 #define ecb_artificial ecb_attribute ((__artificial__))
839 #define ecb_hot ecb_attribute ((__hot__))
840 #define ecb_cold ecb_attribute ((__cold__))
841#else
842 #define ecb_artificial
843 #define ecb_hot
844 #define ecb_cold
845#endif
846
847/* put around conditional expressions if you are very sure that the */
848/* expression is mostly true or mostly false. note that these return */
849/* booleans, not the expression. */
440#define expect_false(expr) expect ((expr) != 0, 0) 850#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
441#define expect_true(expr) expect ((expr) != 0, 1) 851#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
852/* for compatibility to the rest of the world */
853#define ecb_likely(expr) ecb_expect_true (expr)
854#define ecb_unlikely(expr) ecb_expect_false (expr)
855
856/* count trailing zero bits and count # of one bits */
857#if ECB_GCC_VERSION(3,4)
858 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
859 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
860 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
861 #define ecb_ctz32(x) __builtin_ctz (x)
862 #define ecb_ctz64(x) __builtin_ctzll (x)
863 #define ecb_popcount32(x) __builtin_popcount (x)
864 /* no popcountll */
865#else
866 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
867 ecb_function_ int
868 ecb_ctz32 (uint32_t x)
869 {
870 int r = 0;
871
872 x &= ~x + 1; /* this isolates the lowest bit */
873
874#if ECB_branchless_on_i386
875 r += !!(x & 0xaaaaaaaa) << 0;
876 r += !!(x & 0xcccccccc) << 1;
877 r += !!(x & 0xf0f0f0f0) << 2;
878 r += !!(x & 0xff00ff00) << 3;
879 r += !!(x & 0xffff0000) << 4;
880#else
881 if (x & 0xaaaaaaaa) r += 1;
882 if (x & 0xcccccccc) r += 2;
883 if (x & 0xf0f0f0f0) r += 4;
884 if (x & 0xff00ff00) r += 8;
885 if (x & 0xffff0000) r += 16;
886#endif
887
888 return r;
889 }
890
891 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
892 ecb_function_ int
893 ecb_ctz64 (uint64_t x)
894 {
895 int shift = x & 0xffffffffU ? 0 : 32;
896 return ecb_ctz32 (x >> shift) + shift;
897 }
898
899 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
900 ecb_function_ int
901 ecb_popcount32 (uint32_t x)
902 {
903 x -= (x >> 1) & 0x55555555;
904 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
905 x = ((x >> 4) + x) & 0x0f0f0f0f;
906 x *= 0x01010101;
907
908 return x >> 24;
909 }
910
911 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
912 ecb_function_ int ecb_ld32 (uint32_t x)
913 {
914 int r = 0;
915
916 if (x >> 16) { x >>= 16; r += 16; }
917 if (x >> 8) { x >>= 8; r += 8; }
918 if (x >> 4) { x >>= 4; r += 4; }
919 if (x >> 2) { x >>= 2; r += 2; }
920 if (x >> 1) { r += 1; }
921
922 return r;
923 }
924
925 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
926 ecb_function_ int ecb_ld64 (uint64_t x)
927 {
928 int r = 0;
929
930 if (x >> 32) { x >>= 32; r += 32; }
931
932 return r + ecb_ld32 (x);
933 }
934#endif
935
936ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const;
937ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
938ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const;
939ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
940
941ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
942ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
943{
944 return ( (x * 0x0802U & 0x22110U)
945 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
946}
947
948ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
949ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
950{
951 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
952 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
953 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
954 x = ( x >> 8 ) | ( x << 8);
955
956 return x;
957}
958
959ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
960ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
961{
962 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
963 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
964 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
965 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
966 x = ( x >> 16 ) | ( x << 16);
967
968 return x;
969}
970
971/* popcount64 is only available on 64 bit cpus as gcc builtin */
972/* so for this version we are lazy */
973ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
974ecb_function_ int
975ecb_popcount64 (uint64_t x)
976{
977 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
978}
979
980ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
981ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
982ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
983ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
984ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
985ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
986ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
987ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
988
989ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
990ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
991ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
992ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
993ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
994ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
995ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
996ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
997
998#if ECB_GCC_VERSION(4,3)
999 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1000 #define ecb_bswap32(x) __builtin_bswap32 (x)
1001 #define ecb_bswap64(x) __builtin_bswap64 (x)
1002#else
1003 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
1004 ecb_function_ uint16_t
1005 ecb_bswap16 (uint16_t x)
1006 {
1007 return ecb_rotl16 (x, 8);
1008 }
1009
1010 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
1011 ecb_function_ uint32_t
1012 ecb_bswap32 (uint32_t x)
1013 {
1014 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
1015 }
1016
1017 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
1018 ecb_function_ uint64_t
1019 ecb_bswap64 (uint64_t x)
1020 {
1021 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
1022 }
1023#endif
1024
1025#if ECB_GCC_VERSION(4,5)
1026 #define ecb_unreachable() __builtin_unreachable ()
1027#else
1028 /* this seems to work fine, but gcc always emits a warning for it :/ */
1029 ecb_inline void ecb_unreachable (void) ecb_noreturn;
1030 ecb_inline void ecb_unreachable (void) { }
1031#endif
1032
1033/* try to tell the compiler that some condition is definitely true */
1034#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
1035
1036ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
1037ecb_inline unsigned char
1038ecb_byteorder_helper (void)
1039{
1040 /* the union code still generates code under pressure in gcc, */
1041 /* but less than using pointers, and always seems to */
1042 /* successfully return a constant. */
1043 /* the reason why we have this horrible preprocessor mess */
1044 /* is to avoid it in all cases, at least on common architectures */
1045 /* or when using a recent enough gcc version (>= 4.6) */
1046#if __i386 || __i386__ || _M_X86 || __amd64 || __amd64__ || _M_X64
1047 return 0x44;
1048#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
1049 return 0x44;
1050#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
1051 return 0x11;
1052#else
1053 union
1054 {
1055 uint32_t i;
1056 uint8_t c;
1057 } u = { 0x11223344 };
1058 return u.c;
1059#endif
1060}
1061
1062ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
1063ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
1064ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
1065ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
1066
1067#if ECB_GCC_VERSION(3,0) || ECB_C99
1068 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1069#else
1070 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1071#endif
1072
1073#if __cplusplus
1074 template<typename T>
1075 static inline T ecb_div_rd (T val, T div)
1076 {
1077 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1078 }
1079 template<typename T>
1080 static inline T ecb_div_ru (T val, T div)
1081 {
1082 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1083 }
1084#else
1085 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1086 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1087#endif
1088
1089#if ecb_cplusplus_does_not_suck
1090 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1091 template<typename T, int N>
1092 static inline int ecb_array_length (const T (&arr)[N])
1093 {
1094 return N;
1095 }
1096#else
1097 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1098#endif
1099
1100/*******************************************************************************/
1101/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1102
1103/* basically, everything uses "ieee pure-endian" floating point numbers */
1104/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1105#if 0 \
1106 || __i386 || __i386__ \
1107 || __amd64 || __amd64__ || __x86_64 || __x86_64__ \
1108 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1109 || defined __s390__ || defined __s390x__ \
1110 || defined __mips__ \
1111 || defined __alpha__ \
1112 || defined __hppa__ \
1113 || defined __ia64__ \
1114 || defined __m68k__ \
1115 || defined __m88k__ \
1116 || defined __sh__ \
1117 || defined _M_IX86 || defined _M_AMD64 || defined _M_IA64 \
1118 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1119 || defined __aarch64__
1120 #define ECB_STDFP 1
1121 #include <string.h> /* for memcpy */
1122#else
1123 #define ECB_STDFP 0
1124#endif
1125
1126#ifndef ECB_NO_LIBM
1127
1128 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1129
1130 /* only the oldest of old doesn't have this one. solaris. */
1131 #ifdef INFINITY
1132 #define ECB_INFINITY INFINITY
1133 #else
1134 #define ECB_INFINITY HUGE_VAL
1135 #endif
1136
1137 #ifdef NAN
1138 #define ECB_NAN NAN
1139 #else
1140 #define ECB_NAN ECB_INFINITY
1141 #endif
1142
1143 /* converts an ieee half/binary16 to a float */
1144 ecb_function_ float ecb_binary16_to_float (uint16_t x) ecb_const;
1145 ecb_function_ float
1146 ecb_binary16_to_float (uint16_t x)
1147 {
1148 int e = (x >> 10) & 0x1f;
1149 int m = x & 0x3ff;
1150 float r;
1151
1152 if (!e ) r = ldexpf (m , -24);
1153 else if (e != 31) r = ldexpf (m + 0x400, e - 25);
1154 else if (m ) r = ECB_NAN;
1155 else r = ECB_INFINITY;
1156
1157 return x & 0x8000 ? -r : r;
1158 }
1159
1160 /* convert a float to ieee single/binary32 */
1161 ecb_function_ uint32_t ecb_float_to_binary32 (float x) ecb_const;
1162 ecb_function_ uint32_t
1163 ecb_float_to_binary32 (float x)
1164 {
1165 uint32_t r;
1166
1167 #if ECB_STDFP
1168 memcpy (&r, &x, 4);
1169 #else
1170 /* slow emulation, works for anything but -0 */
1171 uint32_t m;
1172 int e;
1173
1174 if (x == 0e0f ) return 0x00000000U;
1175 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1176 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1177 if (x != x ) return 0x7fbfffffU;
1178
1179 m = frexpf (x, &e) * 0x1000000U;
1180
1181 r = m & 0x80000000U;
1182
1183 if (r)
1184 m = -m;
1185
1186 if (e <= -126)
1187 {
1188 m &= 0xffffffU;
1189 m >>= (-125 - e);
1190 e = -126;
1191 }
1192
1193 r |= (e + 126) << 23;
1194 r |= m & 0x7fffffU;
1195 #endif
1196
1197 return r;
1198 }
1199
1200 /* converts an ieee single/binary32 to a float */
1201 ecb_function_ float ecb_binary32_to_float (uint32_t x) ecb_const;
1202 ecb_function_ float
1203 ecb_binary32_to_float (uint32_t x)
1204 {
1205 float r;
1206
1207 #if ECB_STDFP
1208 memcpy (&r, &x, 4);
1209 #else
1210 /* emulation, only works for normals and subnormals and +0 */
1211 int neg = x >> 31;
1212 int e = (x >> 23) & 0xffU;
1213
1214 x &= 0x7fffffU;
1215
1216 if (e)
1217 x |= 0x800000U;
1218 else
1219 e = 1;
1220
1221 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1222 r = ldexpf (x * (0.5f / 0x800000U), e - 126);
1223
1224 r = neg ? -r : r;
1225 #endif
1226
1227 return r;
1228 }
1229
1230 /* convert a double to ieee double/binary64 */
1231 ecb_function_ uint64_t ecb_double_to_binary64 (double x) ecb_const;
1232 ecb_function_ uint64_t
1233 ecb_double_to_binary64 (double x)
1234 {
1235 uint64_t r;
1236
1237 #if ECB_STDFP
1238 memcpy (&r, &x, 8);
1239 #else
1240 /* slow emulation, works for anything but -0 */
1241 uint64_t m;
1242 int e;
1243
1244 if (x == 0e0 ) return 0x0000000000000000U;
1245 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1246 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1247 if (x != x ) return 0X7ff7ffffffffffffU;
1248
1249 m = frexp (x, &e) * 0x20000000000000U;
1250
1251 r = m & 0x8000000000000000;;
1252
1253 if (r)
1254 m = -m;
1255
1256 if (e <= -1022)
1257 {
1258 m &= 0x1fffffffffffffU;
1259 m >>= (-1021 - e);
1260 e = -1022;
1261 }
1262
1263 r |= ((uint64_t)(e + 1022)) << 52;
1264 r |= m & 0xfffffffffffffU;
1265 #endif
1266
1267 return r;
1268 }
1269
1270 /* converts an ieee double/binary64 to a double */
1271 ecb_function_ double ecb_binary64_to_double (uint64_t x) ecb_const;
1272 ecb_function_ double
1273 ecb_binary64_to_double (uint64_t x)
1274 {
1275 double r;
1276
1277 #if ECB_STDFP
1278 memcpy (&r, &x, 8);
1279 #else
1280 /* emulation, only works for normals and subnormals and +0 */
1281 int neg = x >> 63;
1282 int e = (x >> 52) & 0x7ffU;
1283
1284 x &= 0xfffffffffffffU;
1285
1286 if (e)
1287 x |= 0x10000000000000U;
1288 else
1289 e = 1;
1290
1291 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1292 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1293
1294 r = neg ? -r : r;
1295 #endif
1296
1297 return r;
1298 }
1299
1300#endif
1301
1302#endif
1303
1304/* ECB.H END */
1305
1306#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1307/* if your architecture doesn't need memory fences, e.g. because it is
1308 * single-cpu/core, or if you use libev in a project that doesn't use libev
1309 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
1310 * libev, in which cases the memory fences become nops.
1311 * alternatively, you can remove this #error and link against libpthread,
1312 * which will then provide the memory fences.
1313 */
1314# error "memory fences not defined for your architecture, please report"
1315#endif
1316
1317#ifndef ECB_MEMORY_FENCE
1318# define ECB_MEMORY_FENCE do { } while (0)
1319# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1320# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1321#endif
1322
1323#define expect_false(cond) ecb_expect_false (cond)
1324#define expect_true(cond) ecb_expect_true (cond)
1325#define noinline ecb_noinline
1326
442#define inline_size static inline 1327#define inline_size ecb_inline
443 1328
444#if EV_MINIMAL 1329#if EV_FEATURE_CODE
1330# define inline_speed ecb_inline
1331#else
445# define inline_speed static noinline 1332# define inline_speed static noinline
446#else
447# define inline_speed static inline
448#endif 1333#endif
449 1334
450#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1335#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
451 1336
452#if EV_MINPRI == EV_MAXPRI 1337#if EV_MINPRI == EV_MAXPRI
… …
465#define ev_active(w) ((W)(w))->active 1350#define ev_active(w) ((W)(w))->active
466#define ev_at(w) ((WT)(w))->at 1351#define ev_at(w) ((WT)(w))->at
467 1352
468#if EV_USE_REALTIME 1353#if EV_USE_REALTIME
469/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 1354/* sig_atomic_t is used to avoid per-thread variables or locking but still */
470/* giving it a reasonably high chance of working on typical architetcures */ 1355/* giving it a reasonably high chance of working on typical architectures */
471static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 1356static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
472#endif 1357#endif
473 1358
474#if EV_USE_MONOTONIC 1359#if EV_USE_MONOTONIC
475static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 1360static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
476#endif 1361#endif
477 1362
1363#ifndef EV_FD_TO_WIN32_HANDLE
1364# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
1365#endif
1366#ifndef EV_WIN32_HANDLE_TO_FD
1367# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
1368#endif
1369#ifndef EV_WIN32_CLOSE_FD
1370# define EV_WIN32_CLOSE_FD(fd) close (fd)
1371#endif
1372
478#ifdef _WIN32 1373#ifdef _WIN32
479# include "ev_win32.c" 1374# include "ev_win32.c"
480#endif 1375#endif
481 1376
482/*****************************************************************************/ 1377/*****************************************************************************/
483 1378
1379/* define a suitable floor function (only used by periodics atm) */
1380
1381#if EV_USE_FLOOR
1382# include <math.h>
1383# define ev_floor(v) floor (v)
1384#else
1385
1386#include <float.h>
1387
1388/* a floor() replacement function, should be independent of ev_tstamp type */
1389static ev_tstamp noinline
1390ev_floor (ev_tstamp v)
1391{
1392 /* the choice of shift factor is not terribly important */
1393#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1394 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1395#else
1396 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1397#endif
1398
1399 /* argument too large for an unsigned long? */
1400 if (expect_false (v >= shift))
1401 {
1402 ev_tstamp f;
1403
1404 if (v == v - 1.)
1405 return v; /* very large number */
1406
1407 f = shift * ev_floor (v * (1. / shift));
1408 return f + ev_floor (v - f);
1409 }
1410
1411 /* special treatment for negative args? */
1412 if (expect_false (v < 0.))
1413 {
1414 ev_tstamp f = -ev_floor (-v);
1415
1416 return f - (f == v ? 0 : 1);
1417 }
1418
1419 /* fits into an unsigned long */
1420 return (unsigned long)v;
1421}
1422
1423#endif
1424
1425/*****************************************************************************/
1426
1427#ifdef __linux
1428# include <sys/utsname.h>
1429#endif
1430
1431static unsigned int noinline ecb_cold
1432ev_linux_version (void)
1433{
1434#ifdef __linux
1435 unsigned int v = 0;
1436 struct utsname buf;
1437 int i;
1438 char *p = buf.release;
1439
1440 if (uname (&buf))
1441 return 0;
1442
1443 for (i = 3+1; --i; )
1444 {
1445 unsigned int c = 0;
1446
1447 for (;;)
1448 {
1449 if (*p >= '0' && *p <= '9')
1450 c = c * 10 + *p++ - '0';
1451 else
1452 {
1453 p += *p == '.';
1454 break;
1455 }
1456 }
1457
1458 v = (v << 8) | c;
1459 }
1460
1461 return v;
1462#else
1463 return 0;
1464#endif
1465}
1466
1467/*****************************************************************************/
1468
1469#if EV_AVOID_STDIO
1470static void noinline ecb_cold
1471ev_printerr (const char *msg)
1472{
1473 write (STDERR_FILENO, msg, strlen (msg));
1474}
1475#endif
1476
484static void (*syserr_cb)(const char *msg); 1477static void (*syserr_cb)(const char *msg) EV_THROW;
485 1478
486void 1479void ecb_cold
487ev_set_syserr_cb (void (*cb)(const char *msg)) 1480ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
488{ 1481{
489 syserr_cb = cb; 1482 syserr_cb = cb;
490} 1483}
491 1484
492static void noinline 1485static void noinline ecb_cold
493ev_syserr (const char *msg) 1486ev_syserr (const char *msg)
494{ 1487{
495 if (!msg) 1488 if (!msg)
496 msg = "(libev) system error"; 1489 msg = "(libev) system error";
497 1490
498 if (syserr_cb) 1491 if (syserr_cb)
499 syserr_cb (msg); 1492 syserr_cb (msg);
500 else 1493 else
501 { 1494 {
1495#if EV_AVOID_STDIO
1496 ev_printerr (msg);
1497 ev_printerr (": ");
1498 ev_printerr (strerror (errno));
1499 ev_printerr ("\n");
1500#else
502 perror (msg); 1501 perror (msg);
1502#endif
503 abort (); 1503 abort ();
504 } 1504 }
505} 1505}
506 1506
507static void * 1507static void *
508ev_realloc_emul (void *ptr, long size) 1508ev_realloc_emul (void *ptr, long size) EV_THROW
509{ 1509{
510 /* some systems, notably openbsd and darwin, fail to properly 1510 /* some systems, notably openbsd and darwin, fail to properly
511 * implement realloc (x, 0) (as required by both ansi c-98 and 1511 * implement realloc (x, 0) (as required by both ansi c-89 and
512 * the single unix specification, so work around them here. 1512 * the single unix specification, so work around them here.
1513 * recently, also (at least) fedora and debian started breaking it,
1514 * despite documenting it otherwise.
513 */ 1515 */
514 1516
515 if (size) 1517 if (size)
516 return realloc (ptr, size); 1518 return realloc (ptr, size);
517 1519
518 free (ptr); 1520 free (ptr);
519 return 0; 1521 return 0;
520} 1522}
521 1523
522static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1524static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
523 1525
524void 1526void ecb_cold
525ev_set_allocator (void *(*cb)(void *ptr, long size)) 1527ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
526{ 1528{
527 alloc = cb; 1529 alloc = cb;
528} 1530}
529 1531
530inline_speed void * 1532inline_speed void *
… …
532{ 1534{
533 ptr = alloc (ptr, size); 1535 ptr = alloc (ptr, size);
534 1536
535 if (!ptr && size) 1537 if (!ptr && size)
536 { 1538 {
1539#if EV_AVOID_STDIO
1540 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1541#else
537 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1542 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1543#endif
538 abort (); 1544 abort ();
539 } 1545 }
540 1546
541 return ptr; 1547 return ptr;
542} 1548}
… …
558 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1564 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
559 unsigned char unused; 1565 unsigned char unused;
560#if EV_USE_EPOLL 1566#if EV_USE_EPOLL
561 unsigned int egen; /* generation counter to counter epoll bugs */ 1567 unsigned int egen; /* generation counter to counter epoll bugs */
562#endif 1568#endif
563#if EV_SELECT_IS_WINSOCKET 1569#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
564 SOCKET handle; 1570 SOCKET handle;
1571#endif
1572#if EV_USE_IOCP
1573 OVERLAPPED or, ow;
565#endif 1574#endif
566} ANFD; 1575} ANFD;
567 1576
568/* stores the pending event set for a given watcher */ 1577/* stores the pending event set for a given watcher */
569typedef struct 1578typedef struct
… …
611 #undef VAR 1620 #undef VAR
612 }; 1621 };
613 #include "ev_wrap.h" 1622 #include "ev_wrap.h"
614 1623
615 static struct ev_loop default_loop_struct; 1624 static struct ev_loop default_loop_struct;
616 struct ev_loop *ev_default_loop_ptr; 1625 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
617 1626
618#else 1627#else
619 1628
620 ev_tstamp ev_rt_now; 1629 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
621 #define VAR(name,decl) static decl; 1630 #define VAR(name,decl) static decl;
622 #include "ev_vars.h" 1631 #include "ev_vars.h"
623 #undef VAR 1632 #undef VAR
624 1633
625 static int ev_default_loop_ptr; 1634 static int ev_default_loop_ptr;
626 1635
627#endif 1636#endif
628 1637
629#if EV_MINIMAL < 2 1638#if EV_FEATURE_API
630# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 1639# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
631# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 1640# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
632# define EV_INVOKE_PENDING invoke_cb (EV_A) 1641# define EV_INVOKE_PENDING invoke_cb (EV_A)
633#else 1642#else
634# define EV_RELEASE_CB (void)0 1643# define EV_RELEASE_CB (void)0
635# define EV_ACQUIRE_CB (void)0 1644# define EV_ACQUIRE_CB (void)0
636# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1645# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
637#endif 1646#endif
638 1647
639#define EVUNLOOP_RECURSE 0x80 1648#define EVBREAK_RECURSE 0x80
640 1649
641/*****************************************************************************/ 1650/*****************************************************************************/
642 1651
643#ifndef EV_HAVE_EV_TIME 1652#ifndef EV_HAVE_EV_TIME
644ev_tstamp 1653ev_tstamp
645ev_time (void) 1654ev_time (void) EV_THROW
646{ 1655{
647#if EV_USE_REALTIME 1656#if EV_USE_REALTIME
648 if (expect_true (have_realtime)) 1657 if (expect_true (have_realtime))
649 { 1658 {
650 struct timespec ts; 1659 struct timespec ts;
… …
674 return ev_time (); 1683 return ev_time ();
675} 1684}
676 1685
677#if EV_MULTIPLICITY 1686#if EV_MULTIPLICITY
678ev_tstamp 1687ev_tstamp
679ev_now (EV_P) 1688ev_now (EV_P) EV_THROW
680{ 1689{
681 return ev_rt_now; 1690 return ev_rt_now;
682} 1691}
683#endif 1692#endif
684 1693
685void 1694void
686ev_sleep (ev_tstamp delay) 1695ev_sleep (ev_tstamp delay) EV_THROW
687{ 1696{
688 if (delay > 0.) 1697 if (delay > 0.)
689 { 1698 {
690#if EV_USE_NANOSLEEP 1699#if EV_USE_NANOSLEEP
691 struct timespec ts; 1700 struct timespec ts;
692 1701
693 ts.tv_sec = (time_t)delay; 1702 EV_TS_SET (ts, delay);
694 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
695
696 nanosleep (&ts, 0); 1703 nanosleep (&ts, 0);
697#elif defined(_WIN32) 1704#elif defined _WIN32
698 Sleep ((unsigned long)(delay * 1e3)); 1705 Sleep ((unsigned long)(delay * 1e3));
699#else 1706#else
700 struct timeval tv; 1707 struct timeval tv;
701 1708
702 tv.tv_sec = (time_t)delay;
703 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
704
705 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1709 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
706 /* something not guaranteed by newer posix versions, but guaranteed */ 1710 /* something not guaranteed by newer posix versions, but guaranteed */
707 /* by older ones */ 1711 /* by older ones */
1712 EV_TV_SET (tv, delay);
708 select (0, 0, 0, 0, &tv); 1713 select (0, 0, 0, 0, &tv);
709#endif 1714#endif
710 } 1715 }
711} 1716}
712 1717
713/*****************************************************************************/ 1718/*****************************************************************************/
714 1719
715#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1720#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
716 1721
717/* find a suitable new size for the given array, */ 1722/* find a suitable new size for the given array, */
718/* hopefully by rounding to a ncie-to-malloc size */ 1723/* hopefully by rounding to a nice-to-malloc size */
719inline_size int 1724inline_size int
720array_nextsize (int elem, int cur, int cnt) 1725array_nextsize (int elem, int cur, int cnt)
721{ 1726{
722 int ncur = cur + 1; 1727 int ncur = cur + 1;
723 1728
724 do 1729 do
725 ncur <<= 1; 1730 ncur <<= 1;
726 while (cnt > ncur); 1731 while (cnt > ncur);
727 1732
728 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1733 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
729 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1734 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
730 { 1735 {
731 ncur *= elem; 1736 ncur *= elem;
732 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1737 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
733 ncur = ncur - sizeof (void *) * 4; 1738 ncur = ncur - sizeof (void *) * 4;
… …
735 } 1740 }
736 1741
737 return ncur; 1742 return ncur;
738} 1743}
739 1744
740static noinline void * 1745static void * noinline ecb_cold
741array_realloc (int elem, void *base, int *cur, int cnt) 1746array_realloc (int elem, void *base, int *cur, int cnt)
742{ 1747{
743 *cur = array_nextsize (elem, *cur, cnt); 1748 *cur = array_nextsize (elem, *cur, cnt);
744 return ev_realloc (base, elem * *cur); 1749 return ev_realloc (base, elem * *cur);
745} 1750}
… …
748 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1753 memset ((void *)(base), 0, sizeof (*(base)) * (count))
749 1754
750#define array_needsize(type,base,cur,cnt,init) \ 1755#define array_needsize(type,base,cur,cnt,init) \
751 if (expect_false ((cnt) > (cur))) \ 1756 if (expect_false ((cnt) > (cur))) \
752 { \ 1757 { \
753 int ocur_ = (cur); \ 1758 int ecb_unused ocur_ = (cur); \
754 (base) = (type *)array_realloc \ 1759 (base) = (type *)array_realloc \
755 (sizeof (type), (base), &(cur), (cnt)); \ 1760 (sizeof (type), (base), &(cur), (cnt)); \
756 init ((base) + (ocur_), (cur) - ocur_); \ 1761 init ((base) + (ocur_), (cur) - ocur_); \
757 } 1762 }
758 1763
… …
776pendingcb (EV_P_ ev_prepare *w, int revents) 1781pendingcb (EV_P_ ev_prepare *w, int revents)
777{ 1782{
778} 1783}
779 1784
780void noinline 1785void noinline
781ev_feed_event (EV_P_ void *w, int revents) 1786ev_feed_event (EV_P_ void *w, int revents) EV_THROW
782{ 1787{
783 W w_ = (W)w; 1788 W w_ = (W)w;
784 int pri = ABSPRI (w_); 1789 int pri = ABSPRI (w_);
785 1790
786 if (expect_false (w_->pending)) 1791 if (expect_false (w_->pending))
… …
790 w_->pending = ++pendingcnt [pri]; 1795 w_->pending = ++pendingcnt [pri];
791 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1796 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
792 pendings [pri][w_->pending - 1].w = w_; 1797 pendings [pri][w_->pending - 1].w = w_;
793 pendings [pri][w_->pending - 1].events = revents; 1798 pendings [pri][w_->pending - 1].events = revents;
794 } 1799 }
1800
1801 pendingpri = NUMPRI - 1;
795} 1802}
796 1803
797inline_speed void 1804inline_speed void
798feed_reverse (EV_P_ W w) 1805feed_reverse (EV_P_ W w)
799{ 1806{
… …
819} 1826}
820 1827
821/*****************************************************************************/ 1828/*****************************************************************************/
822 1829
823inline_speed void 1830inline_speed void
824fd_event_nc (EV_P_ int fd, int revents) 1831fd_event_nocheck (EV_P_ int fd, int revents)
825{ 1832{
826 ANFD *anfd = anfds + fd; 1833 ANFD *anfd = anfds + fd;
827 ev_io *w; 1834 ev_io *w;
828 1835
829 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1836 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
841fd_event (EV_P_ int fd, int revents) 1848fd_event (EV_P_ int fd, int revents)
842{ 1849{
843 ANFD *anfd = anfds + fd; 1850 ANFD *anfd = anfds + fd;
844 1851
845 if (expect_true (!anfd->reify)) 1852 if (expect_true (!anfd->reify))
846 fd_event_nc (EV_A_ fd, revents); 1853 fd_event_nocheck (EV_A_ fd, revents);
847} 1854}
848 1855
849void 1856void
850ev_feed_fd_event (EV_P_ int fd, int revents) 1857ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
851{ 1858{
852 if (fd >= 0 && fd < anfdmax) 1859 if (fd >= 0 && fd < anfdmax)
853 fd_event_nc (EV_A_ fd, revents); 1860 fd_event_nocheck (EV_A_ fd, revents);
854} 1861}
855 1862
856/* make sure the external fd watch events are in-sync */ 1863/* make sure the external fd watch events are in-sync */
857/* with the kernel/libev internal state */ 1864/* with the kernel/libev internal state */
858inline_size void 1865inline_size void
859fd_reify (EV_P) 1866fd_reify (EV_P)
860{ 1867{
861 int i; 1868 int i;
862 1869
1870#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1871 for (i = 0; i < fdchangecnt; ++i)
1872 {
1873 int fd = fdchanges [i];
1874 ANFD *anfd = anfds + fd;
1875
1876 if (anfd->reify & EV__IOFDSET && anfd->head)
1877 {
1878 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1879
1880 if (handle != anfd->handle)
1881 {
1882 unsigned long arg;
1883
1884 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1885
1886 /* handle changed, but fd didn't - we need to do it in two steps */
1887 backend_modify (EV_A_ fd, anfd->events, 0);
1888 anfd->events = 0;
1889 anfd->handle = handle;
1890 }
1891 }
1892 }
1893#endif
1894
863 for (i = 0; i < fdchangecnt; ++i) 1895 for (i = 0; i < fdchangecnt; ++i)
864 { 1896 {
865 int fd = fdchanges [i]; 1897 int fd = fdchanges [i];
866 ANFD *anfd = anfds + fd; 1898 ANFD *anfd = anfds + fd;
867 ev_io *w; 1899 ev_io *w;
868 1900
869 unsigned char events = 0; 1901 unsigned char o_events = anfd->events;
1902 unsigned char o_reify = anfd->reify;
870 1903
871 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1904 anfd->reify = 0;
872 events |= (unsigned char)w->events;
873 1905
874#if EV_SELECT_IS_WINSOCKET 1906 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
875 if (events)
876 { 1907 {
877 unsigned long arg; 1908 anfd->events = 0;
878 #ifdef EV_FD_TO_WIN32_HANDLE 1909
879 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1910 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
880 #else 1911 anfd->events |= (unsigned char)w->events;
881 anfd->handle = _get_osfhandle (fd); 1912
882 #endif 1913 if (o_events != anfd->events)
883 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1914 o_reify = EV__IOFDSET; /* actually |= */
884 } 1915 }
885#endif
886 1916
887 { 1917 if (o_reify & EV__IOFDSET)
888 unsigned char o_events = anfd->events;
889 unsigned char o_reify = anfd->reify;
890
891 anfd->reify = 0;
892 anfd->events = events;
893
894 if (o_events != events || o_reify & EV__IOFDSET)
895 backend_modify (EV_A_ fd, o_events, events); 1918 backend_modify (EV_A_ fd, o_events, anfd->events);
896 }
897 } 1919 }
898 1920
899 fdchangecnt = 0; 1921 fdchangecnt = 0;
900} 1922}
901 1923
… …
913 fdchanges [fdchangecnt - 1] = fd; 1935 fdchanges [fdchangecnt - 1] = fd;
914 } 1936 }
915} 1937}
916 1938
917/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1939/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
918inline_speed void 1940inline_speed void ecb_cold
919fd_kill (EV_P_ int fd) 1941fd_kill (EV_P_ int fd)
920{ 1942{
921 ev_io *w; 1943 ev_io *w;
922 1944
923 while ((w = (ev_io *)anfds [fd].head)) 1945 while ((w = (ev_io *)anfds [fd].head))
… …
925 ev_io_stop (EV_A_ w); 1947 ev_io_stop (EV_A_ w);
926 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1948 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
927 } 1949 }
928} 1950}
929 1951
930/* check whether the given fd is atcually valid, for error recovery */ 1952/* check whether the given fd is actually valid, for error recovery */
931inline_size int 1953inline_size int ecb_cold
932fd_valid (int fd) 1954fd_valid (int fd)
933{ 1955{
934#ifdef _WIN32 1956#ifdef _WIN32
935 return _get_osfhandle (fd) != -1; 1957 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
936#else 1958#else
937 return fcntl (fd, F_GETFD) != -1; 1959 return fcntl (fd, F_GETFD) != -1;
938#endif 1960#endif
939} 1961}
940 1962
941/* called on EBADF to verify fds */ 1963/* called on EBADF to verify fds */
942static void noinline 1964static void noinline ecb_cold
943fd_ebadf (EV_P) 1965fd_ebadf (EV_P)
944{ 1966{
945 int fd; 1967 int fd;
946 1968
947 for (fd = 0; fd < anfdmax; ++fd) 1969 for (fd = 0; fd < anfdmax; ++fd)
… …
949 if (!fd_valid (fd) && errno == EBADF) 1971 if (!fd_valid (fd) && errno == EBADF)
950 fd_kill (EV_A_ fd); 1972 fd_kill (EV_A_ fd);
951} 1973}
952 1974
953/* called on ENOMEM in select/poll to kill some fds and retry */ 1975/* called on ENOMEM in select/poll to kill some fds and retry */
954static void noinline 1976static void noinline ecb_cold
955fd_enomem (EV_P) 1977fd_enomem (EV_P)
956{ 1978{
957 int fd; 1979 int fd;
958 1980
959 for (fd = anfdmax; fd--; ) 1981 for (fd = anfdmax; fd--; )
960 if (anfds [fd].events) 1982 if (anfds [fd].events)
961 { 1983 {
962 fd_kill (EV_A_ fd); 1984 fd_kill (EV_A_ fd);
963 return; 1985 break;
964 } 1986 }
965} 1987}
966 1988
967/* usually called after fork if backend needs to re-arm all fds from scratch */ 1989/* usually called after fork if backend needs to re-arm all fds from scratch */
968static void noinline 1990static void noinline
… …
977 anfds [fd].emask = 0; 1999 anfds [fd].emask = 0;
978 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); 2000 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
979 } 2001 }
980} 2002}
981 2003
2004/* used to prepare libev internal fd's */
2005/* this is not fork-safe */
2006inline_speed void
2007fd_intern (int fd)
2008{
2009#ifdef _WIN32
2010 unsigned long arg = 1;
2011 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
2012#else
2013 fcntl (fd, F_SETFD, FD_CLOEXEC);
2014 fcntl (fd, F_SETFL, O_NONBLOCK);
2015#endif
2016}
2017
982/*****************************************************************************/ 2018/*****************************************************************************/
983 2019
984/* 2020/*
985 * the heap functions want a real array index. array index 0 uis guaranteed to not 2021 * the heap functions want a real array index. array index 0 is guaranteed to not
986 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 2022 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
987 * the branching factor of the d-tree. 2023 * the branching factor of the d-tree.
988 */ 2024 */
989 2025
990/* 2026/*
… …
1058 2094
1059 for (;;) 2095 for (;;)
1060 { 2096 {
1061 int c = k << 1; 2097 int c = k << 1;
1062 2098
1063 if (c > N + HEAP0 - 1) 2099 if (c >= N + HEAP0)
1064 break; 2100 break;
1065 2101
1066 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 2102 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
1067 ? 1 : 0; 2103 ? 1 : 0;
1068 2104
… …
1104 2140
1105/* move an element suitably so it is in a correct place */ 2141/* move an element suitably so it is in a correct place */
1106inline_size void 2142inline_size void
1107adjustheap (ANHE *heap, int N, int k) 2143adjustheap (ANHE *heap, int N, int k)
1108{ 2144{
1109 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 2145 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1110 upheap (heap, k); 2146 upheap (heap, k);
1111 else 2147 else
1112 downheap (heap, N, k); 2148 downheap (heap, N, k);
1113} 2149}
1114 2150
… …
1127/*****************************************************************************/ 2163/*****************************************************************************/
1128 2164
1129/* associate signal watchers to a signal signal */ 2165/* associate signal watchers to a signal signal */
1130typedef struct 2166typedef struct
1131{ 2167{
2168 EV_ATOMIC_T pending;
1132#if EV_MULTIPLICITY 2169#if EV_MULTIPLICITY
1133 EV_P; 2170 EV_P;
1134#endif 2171#endif
1135 WL head; 2172 WL head;
1136 EV_ATOMIC_T gotsig;
1137} ANSIG; 2173} ANSIG;
1138 2174
1139static ANSIG signals [EV_NSIG - 1]; 2175static ANSIG signals [EV_NSIG - 1];
1140static EV_ATOMIC_T gotsig;
1141 2176
1142/*****************************************************************************/ 2177/*****************************************************************************/
1143 2178
1144/* used to prepare libev internal fd's */ 2179#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1145/* this is not fork-safe */ 2180
2181static void noinline ecb_cold
2182evpipe_init (EV_P)
2183{
2184 if (!ev_is_active (&pipe_w))
2185 {
2186 int fds [2];
2187
2188# if EV_USE_EVENTFD
2189 fds [0] = -1;
2190 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
2191 if (fds [1] < 0 && errno == EINVAL)
2192 fds [1] = eventfd (0, 0);
2193
2194 if (fds [1] < 0)
2195# endif
2196 {
2197 while (pipe (fds))
2198 ev_syserr ("(libev) error creating signal/async pipe");
2199
2200 fd_intern (fds [0]);
2201 }
2202
2203 evpipe [0] = fds [0];
2204
2205 if (evpipe [1] < 0)
2206 evpipe [1] = fds [1]; /* first call, set write fd */
2207 else
2208 {
2209 /* on subsequent calls, do not change evpipe [1] */
2210 /* so that evpipe_write can always rely on its value. */
2211 /* this branch does not do anything sensible on windows, */
2212 /* so must not be executed on windows */
2213
2214 dup2 (fds [1], evpipe [1]);
2215 close (fds [1]);
2216 }
2217
2218 fd_intern (evpipe [1]);
2219
2220 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2221 ev_io_start (EV_A_ &pipe_w);
2222 ev_unref (EV_A); /* watcher should not keep loop alive */
2223 }
2224}
2225
1146inline_speed void 2226inline_speed void
1147fd_intern (int fd) 2227evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1148{ 2228{
1149#ifdef _WIN32 2229 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1150 unsigned long arg = 1;
1151 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1152#else
1153 fcntl (fd, F_SETFD, FD_CLOEXEC);
1154 fcntl (fd, F_SETFL, O_NONBLOCK);
1155#endif
1156}
1157 2230
1158static void noinline 2231 if (expect_true (*flag))
1159evpipe_init (EV_P) 2232 return;
1160{ 2233
1161 if (!ev_is_active (&pipe_w)) 2234 *flag = 1;
2235 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2236
2237 pipe_write_skipped = 1;
2238
2239 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2240
2241 if (pipe_write_wanted)
1162 { 2242 {
2243 int old_errno;
2244
2245 pipe_write_skipped = 0;
2246 ECB_MEMORY_FENCE_RELEASE;
2247
2248 old_errno = errno; /* save errno because write will clobber it */
2249
1163#if EV_USE_EVENTFD 2250#if EV_USE_EVENTFD
1164 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2251 if (evpipe [0] < 0)
1165 if (evfd < 0 && errno == EINVAL)
1166 evfd = eventfd (0, 0);
1167
1168 if (evfd >= 0)
1169 { 2252 {
1170 evpipe [0] = -1; 2253 uint64_t counter = 1;
1171 fd_intern (evfd); /* doing it twice doesn't hurt */ 2254 write (evpipe [1], &counter, sizeof (uint64_t));
1172 ev_io_set (&pipe_w, evfd, EV_READ);
1173 } 2255 }
1174 else 2256 else
1175#endif 2257#endif
1176 { 2258 {
1177 while (pipe (evpipe)) 2259#ifdef _WIN32
1178 ev_syserr ("(libev) error creating signal/async pipe"); 2260 WSABUF buf;
1179 2261 DWORD sent;
1180 fd_intern (evpipe [0]); 2262 buf.buf = &buf;
1181 fd_intern (evpipe [1]); 2263 buf.len = 1;
1182 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2264 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2265#else
2266 write (evpipe [1], &(evpipe [1]), 1);
2267#endif
1183 } 2268 }
1184
1185 ev_io_start (EV_A_ &pipe_w);
1186 ev_unref (EV_A); /* watcher should not keep loop alive */
1187 }
1188}
1189
1190inline_size void
1191evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1192{
1193 if (!*flag)
1194 {
1195 int old_errno = errno; /* save errno because write might clobber it */
1196
1197 *flag = 1;
1198
1199#if EV_USE_EVENTFD
1200 if (evfd >= 0)
1201 {
1202 uint64_t counter = 1;
1203 write (evfd, &counter, sizeof (uint64_t));
1204 }
1205 else
1206#endif
1207 write (evpipe [1], &old_errno, 1);
1208 2269
1209 errno = old_errno; 2270 errno = old_errno;
1210 } 2271 }
1211} 2272}
1212 2273
1213/* called whenever the libev signal pipe */ 2274/* called whenever the libev signal pipe */
1214/* got some events (signal, async) */ 2275/* got some events (signal, async) */
1215static void 2276static void
1216pipecb (EV_P_ ev_io *iow, int revents) 2277pipecb (EV_P_ ev_io *iow, int revents)
1217{ 2278{
2279 int i;
2280
2281 if (revents & EV_READ)
2282 {
1218#if EV_USE_EVENTFD 2283#if EV_USE_EVENTFD
1219 if (evfd >= 0) 2284 if (evpipe [0] < 0)
1220 { 2285 {
1221 uint64_t counter; 2286 uint64_t counter;
1222 read (evfd, &counter, sizeof (uint64_t)); 2287 read (evpipe [1], &counter, sizeof (uint64_t));
1223 } 2288 }
1224 else 2289 else
1225#endif 2290#endif
1226 { 2291 {
1227 char dummy; 2292 char dummy[4];
2293#ifdef _WIN32
2294 WSABUF buf;
2295 DWORD recvd;
2296 DWORD flags = 0;
2297 buf.buf = dummy;
2298 buf.len = sizeof (dummy);
2299 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2300#else
1228 read (evpipe [0], &dummy, 1); 2301 read (evpipe [0], &dummy, sizeof (dummy));
2302#endif
2303 }
2304 }
2305
2306 pipe_write_skipped = 0;
2307
2308 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2309
2310#if EV_SIGNAL_ENABLE
2311 if (sig_pending)
1229 } 2312 {
2313 sig_pending = 0;
1230 2314
1231 if (gotsig && ev_is_default_loop (EV_A)) 2315 ECB_MEMORY_FENCE;
1232 {
1233 int signum;
1234 gotsig = 0;
1235 2316
1236 for (signum = EV_NSIG - 1; signum--; ) 2317 for (i = EV_NSIG - 1; i--; )
1237 if (signals [signum].gotsig) 2318 if (expect_false (signals [i].pending))
1238 ev_feed_signal_event (EV_A_ signum + 1); 2319 ev_feed_signal_event (EV_A_ i + 1);
1239 } 2320 }
2321#endif
1240 2322
1241#if EV_ASYNC_ENABLE 2323#if EV_ASYNC_ENABLE
1242 if (gotasync) 2324 if (async_pending)
1243 { 2325 {
1244 int i; 2326 async_pending = 0;
1245 gotasync = 0; 2327
2328 ECB_MEMORY_FENCE;
1246 2329
1247 for (i = asynccnt; i--; ) 2330 for (i = asynccnt; i--; )
1248 if (asyncs [i]->sent) 2331 if (asyncs [i]->sent)
1249 { 2332 {
1250 asyncs [i]->sent = 0; 2333 asyncs [i]->sent = 0;
2334 ECB_MEMORY_FENCE_RELEASE;
1251 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2335 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1252 } 2336 }
1253 } 2337 }
1254#endif 2338#endif
1255} 2339}
1256 2340
1257/*****************************************************************************/ 2341/*****************************************************************************/
1258 2342
2343void
2344ev_feed_signal (int signum) EV_THROW
2345{
2346#if EV_MULTIPLICITY
2347 EV_P;
2348 ECB_MEMORY_FENCE_ACQUIRE;
2349 EV_A = signals [signum - 1].loop;
2350
2351 if (!EV_A)
2352 return;
2353#endif
2354
2355 signals [signum - 1].pending = 1;
2356 evpipe_write (EV_A_ &sig_pending);
2357}
2358
1259static void 2359static void
1260ev_sighandler (int signum) 2360ev_sighandler (int signum)
1261{ 2361{
2362#ifdef _WIN32
2363 signal (signum, ev_sighandler);
2364#endif
2365
2366 ev_feed_signal (signum);
2367}
2368
2369void noinline
2370ev_feed_signal_event (EV_P_ int signum) EV_THROW
2371{
2372 WL w;
2373
2374 if (expect_false (signum <= 0 || signum >= EV_NSIG))
2375 return;
2376
2377 --signum;
2378
1262#if EV_MULTIPLICITY 2379#if EV_MULTIPLICITY
1263 EV_P = signals [signum - 1].loop; 2380 /* it is permissible to try to feed a signal to the wrong loop */
1264#endif 2381 /* or, likely more useful, feeding a signal nobody is waiting for */
1265 2382
1266#if _WIN32 2383 if (expect_false (signals [signum].loop != EV_A))
1267 signal (signum, ev_sighandler);
1268#endif
1269
1270 signals [signum - 1].gotsig = 1;
1271 evpipe_write (EV_A_ &gotsig);
1272}
1273
1274void noinline
1275ev_feed_signal_event (EV_P_ int signum)
1276{
1277 WL w;
1278
1279#if EV_MULTIPLICITY
1280 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1281#endif
1282
1283 if (signum <= 0 || signum > EV_NSIG)
1284 return; 2384 return;
2385#endif
1285 2386
1286 --signum;
1287
1288 signals [signum].gotsig = 0; 2387 signals [signum].pending = 0;
2388 ECB_MEMORY_FENCE_RELEASE;
1289 2389
1290 for (w = signals [signum].head; w; w = w->next) 2390 for (w = signals [signum].head; w; w = w->next)
1291 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2391 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1292} 2392}
1293 2393
… …
1309 break; 2409 break;
1310 } 2410 }
1311} 2411}
1312#endif 2412#endif
1313 2413
2414#endif
2415
1314/*****************************************************************************/ 2416/*****************************************************************************/
1315 2417
2418#if EV_CHILD_ENABLE
1316static WL childs [EV_PID_HASHSIZE]; 2419static WL childs [EV_PID_HASHSIZE];
1317
1318#ifndef _WIN32
1319 2420
1320static ev_signal childev; 2421static ev_signal childev;
1321 2422
1322#ifndef WIFCONTINUED 2423#ifndef WIFCONTINUED
1323# define WIFCONTINUED(status) 0 2424# define WIFCONTINUED(status) 0
… …
1328child_reap (EV_P_ int chain, int pid, int status) 2429child_reap (EV_P_ int chain, int pid, int status)
1329{ 2430{
1330 ev_child *w; 2431 ev_child *w;
1331 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2432 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1332 2433
1333 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2434 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1334 { 2435 {
1335 if ((w->pid == pid || !w->pid) 2436 if ((w->pid == pid || !w->pid)
1336 && (!traced || (w->flags & 1))) 2437 && (!traced || (w->flags & 1)))
1337 { 2438 {
1338 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2439 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1363 /* make sure we are called again until all children have been reaped */ 2464 /* make sure we are called again until all children have been reaped */
1364 /* we need to do it this way so that the callback gets called before we continue */ 2465 /* we need to do it this way so that the callback gets called before we continue */
1365 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2466 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1366 2467
1367 child_reap (EV_A_ pid, pid, status); 2468 child_reap (EV_A_ pid, pid, status);
1368 if (EV_PID_HASHSIZE > 1) 2469 if ((EV_PID_HASHSIZE) > 1)
1369 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2470 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1370} 2471}
1371 2472
1372#endif 2473#endif
1373 2474
1374/*****************************************************************************/ 2475/*****************************************************************************/
1375 2476
2477#if EV_USE_IOCP
2478# include "ev_iocp.c"
2479#endif
1376#if EV_USE_PORT 2480#if EV_USE_PORT
1377# include "ev_port.c" 2481# include "ev_port.c"
1378#endif 2482#endif
1379#if EV_USE_KQUEUE 2483#if EV_USE_KQUEUE
1380# include "ev_kqueue.c" 2484# include "ev_kqueue.c"
… …
1387#endif 2491#endif
1388#if EV_USE_SELECT 2492#if EV_USE_SELECT
1389# include "ev_select.c" 2493# include "ev_select.c"
1390#endif 2494#endif
1391 2495
1392int 2496int ecb_cold
1393ev_version_major (void) 2497ev_version_major (void) EV_THROW
1394{ 2498{
1395 return EV_VERSION_MAJOR; 2499 return EV_VERSION_MAJOR;
1396} 2500}
1397 2501
1398int 2502int ecb_cold
1399ev_version_minor (void) 2503ev_version_minor (void) EV_THROW
1400{ 2504{
1401 return EV_VERSION_MINOR; 2505 return EV_VERSION_MINOR;
1402} 2506}
1403 2507
1404/* return true if we are running with elevated privileges and should ignore env variables */ 2508/* return true if we are running with elevated privileges and should ignore env variables */
1405int inline_size 2509int inline_size ecb_cold
1406enable_secure (void) 2510enable_secure (void)
1407{ 2511{
1408#ifdef _WIN32 2512#ifdef _WIN32
1409 return 0; 2513 return 0;
1410#else 2514#else
1411 return getuid () != geteuid () 2515 return getuid () != geteuid ()
1412 || getgid () != getegid (); 2516 || getgid () != getegid ();
1413#endif 2517#endif
1414} 2518}
1415 2519
1416unsigned int 2520unsigned int ecb_cold
1417ev_supported_backends (void) 2521ev_supported_backends (void) EV_THROW
1418{ 2522{
1419 unsigned int flags = 0; 2523 unsigned int flags = 0;
1420 2524
1421 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2525 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1422 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2526 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1425 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2529 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1426 2530
1427 return flags; 2531 return flags;
1428} 2532}
1429 2533
1430unsigned int 2534unsigned int ecb_cold
1431ev_recommended_backends (void) 2535ev_recommended_backends (void) EV_THROW
1432{ 2536{
1433 unsigned int flags = ev_supported_backends (); 2537 unsigned int flags = ev_supported_backends ();
1434 2538
1435#ifndef __NetBSD__ 2539#ifndef __NetBSD__
1436 /* kqueue is borked on everything but netbsd apparently */ 2540 /* kqueue is borked on everything but netbsd apparently */
… …
1440#ifdef __APPLE__ 2544#ifdef __APPLE__
1441 /* only select works correctly on that "unix-certified" platform */ 2545 /* only select works correctly on that "unix-certified" platform */
1442 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2546 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1443 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 2547 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1444#endif 2548#endif
2549#ifdef __FreeBSD__
2550 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2551#endif
1445 2552
1446 return flags; 2553 return flags;
1447} 2554}
1448 2555
2556unsigned int ecb_cold
2557ev_embeddable_backends (void) EV_THROW
2558{
2559 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2560
2561 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2562 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2563 flags &= ~EVBACKEND_EPOLL;
2564
2565 return flags;
2566}
2567
1449unsigned int 2568unsigned int
1450ev_embeddable_backends (void) 2569ev_backend (EV_P) EV_THROW
1451{ 2570{
1452 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2571 return backend;
1453
1454 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1455 /* please fix it and tell me how to detect the fix */
1456 flags &= ~EVBACKEND_EPOLL;
1457
1458 return flags;
1459} 2572}
1460 2573
2574#if EV_FEATURE_API
1461unsigned int 2575unsigned int
1462ev_backend (EV_P) 2576ev_iteration (EV_P) EV_THROW
1463{ 2577{
1464 return backend; 2578 return loop_count;
1465} 2579}
1466 2580
1467#if EV_MINIMAL < 2
1468unsigned int 2581unsigned int
1469ev_loop_count (EV_P) 2582ev_depth (EV_P) EV_THROW
1470{
1471 return loop_count;
1472}
1473
1474unsigned int
1475ev_loop_depth (EV_P)
1476{ 2583{
1477 return loop_depth; 2584 return loop_depth;
1478} 2585}
1479 2586
1480void 2587void
1481ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2588ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1482{ 2589{
1483 io_blocktime = interval; 2590 io_blocktime = interval;
1484} 2591}
1485 2592
1486void 2593void
1487ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2594ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1488{ 2595{
1489 timeout_blocktime = interval; 2596 timeout_blocktime = interval;
1490} 2597}
1491 2598
1492void 2599void
1493ev_set_userdata (EV_P_ void *data) 2600ev_set_userdata (EV_P_ void *data) EV_THROW
1494{ 2601{
1495 userdata = data; 2602 userdata = data;
1496} 2603}
1497 2604
1498void * 2605void *
1499ev_userdata (EV_P) 2606ev_userdata (EV_P) EV_THROW
1500{ 2607{
1501 return userdata; 2608 return userdata;
1502} 2609}
1503 2610
2611void
1504void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2612ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_THROW
1505{ 2613{
1506 invoke_cb = invoke_pending_cb; 2614 invoke_cb = invoke_pending_cb;
1507} 2615}
1508 2616
1509void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2617void
2618ev_set_loop_release_cb (EV_P_ ev_loop_callback EV_THROW release, ev_loop_callback EV_THROW acquire) EV_THROW
1510{ 2619{
1511 release_cb = release; 2620 release_cb = release;
1512 acquire_cb = acquire; 2621 acquire_cb = acquire;
1513} 2622}
1514#endif 2623#endif
1515 2624
1516/* initialise a loop structure, must be zero-initialised */ 2625/* initialise a loop structure, must be zero-initialised */
1517static void noinline 2626static void noinline ecb_cold
1518loop_init (EV_P_ unsigned int flags) 2627loop_init (EV_P_ unsigned int flags) EV_THROW
1519{ 2628{
1520 if (!backend) 2629 if (!backend)
1521 { 2630 {
2631 origflags = flags;
2632
1522#if EV_USE_REALTIME 2633#if EV_USE_REALTIME
1523 if (!have_realtime) 2634 if (!have_realtime)
1524 { 2635 {
1525 struct timespec ts; 2636 struct timespec ts;
1526 2637
… …
1548 if (!(flags & EVFLAG_NOENV) 2659 if (!(flags & EVFLAG_NOENV)
1549 && !enable_secure () 2660 && !enable_secure ()
1550 && getenv ("LIBEV_FLAGS")) 2661 && getenv ("LIBEV_FLAGS"))
1551 flags = atoi (getenv ("LIBEV_FLAGS")); 2662 flags = atoi (getenv ("LIBEV_FLAGS"));
1552 2663
1553 ev_rt_now = ev_time (); 2664 ev_rt_now = ev_time ();
1554 mn_now = get_clock (); 2665 mn_now = get_clock ();
1555 now_floor = mn_now; 2666 now_floor = mn_now;
1556 rtmn_diff = ev_rt_now - mn_now; 2667 rtmn_diff = ev_rt_now - mn_now;
1557#if EV_MINIMAL < 2 2668#if EV_FEATURE_API
1558 invoke_cb = ev_invoke_pending; 2669 invoke_cb = ev_invoke_pending;
1559#endif 2670#endif
1560 2671
1561 io_blocktime = 0.; 2672 io_blocktime = 0.;
1562 timeout_blocktime = 0.; 2673 timeout_blocktime = 0.;
1563 backend = 0; 2674 backend = 0;
1564 backend_fd = -1; 2675 backend_fd = -1;
1565 gotasync = 0; 2676 sig_pending = 0;
2677#if EV_ASYNC_ENABLE
2678 async_pending = 0;
2679#endif
2680 pipe_write_skipped = 0;
2681 pipe_write_wanted = 0;
2682 evpipe [0] = -1;
2683 evpipe [1] = -1;
1566#if EV_USE_INOTIFY 2684#if EV_USE_INOTIFY
1567 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2685 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1568#endif 2686#endif
1569#if EV_USE_SIGNALFD 2687#if EV_USE_SIGNALFD
1570 sigfd = flags & EVFLAG_NOSIGFD ? -1 : -2; 2688 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1571#endif 2689#endif
1572 2690
1573 if (!(flags & 0x0000ffffU)) 2691 if (!(flags & EVBACKEND_MASK))
1574 flags |= ev_recommended_backends (); 2692 flags |= ev_recommended_backends ();
1575 2693
2694#if EV_USE_IOCP
2695 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2696#endif
1576#if EV_USE_PORT 2697#if EV_USE_PORT
1577 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2698 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1578#endif 2699#endif
1579#if EV_USE_KQUEUE 2700#if EV_USE_KQUEUE
1580 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2701 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1589 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2710 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1590#endif 2711#endif
1591 2712
1592 ev_prepare_init (&pending_w, pendingcb); 2713 ev_prepare_init (&pending_w, pendingcb);
1593 2714
2715#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1594 ev_init (&pipe_w, pipecb); 2716 ev_init (&pipe_w, pipecb);
1595 ev_set_priority (&pipe_w, EV_MAXPRI); 2717 ev_set_priority (&pipe_w, EV_MAXPRI);
2718#endif
1596 } 2719 }
1597} 2720}
1598 2721
1599/* free up a loop structure */ 2722/* free up a loop structure */
1600static void noinline 2723void ecb_cold
1601loop_destroy (EV_P) 2724ev_loop_destroy (EV_P)
1602{ 2725{
1603 int i; 2726 int i;
2727
2728#if EV_MULTIPLICITY
2729 /* mimic free (0) */
2730 if (!EV_A)
2731 return;
2732#endif
2733
2734#if EV_CLEANUP_ENABLE
2735 /* queue cleanup watchers (and execute them) */
2736 if (expect_false (cleanupcnt))
2737 {
2738 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2739 EV_INVOKE_PENDING;
2740 }
2741#endif
2742
2743#if EV_CHILD_ENABLE
2744 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2745 {
2746 ev_ref (EV_A); /* child watcher */
2747 ev_signal_stop (EV_A_ &childev);
2748 }
2749#endif
1604 2750
1605 if (ev_is_active (&pipe_w)) 2751 if (ev_is_active (&pipe_w))
1606 { 2752 {
1607 /*ev_ref (EV_A);*/ 2753 /*ev_ref (EV_A);*/
1608 /*ev_io_stop (EV_A_ &pipe_w);*/ 2754 /*ev_io_stop (EV_A_ &pipe_w);*/
1609 2755
1610#if EV_USE_EVENTFD 2756 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1611 if (evfd >= 0) 2757 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1612 close (evfd);
1613#endif
1614
1615 if (evpipe [0] >= 0)
1616 {
1617 close (evpipe [0]);
1618 close (evpipe [1]);
1619 }
1620 } 2758 }
1621 2759
1622#if EV_USE_SIGNALFD 2760#if EV_USE_SIGNALFD
1623 if (ev_is_active (&sigfd_w)) 2761 if (ev_is_active (&sigfd_w))
1624 {
1625 /*ev_ref (EV_A);*/
1626 /*ev_io_stop (EV_A_ &sigfd_w);*/
1627
1628 close (sigfd); 2762 close (sigfd);
1629 }
1630#endif 2763#endif
1631 2764
1632#if EV_USE_INOTIFY 2765#if EV_USE_INOTIFY
1633 if (fs_fd >= 0) 2766 if (fs_fd >= 0)
1634 close (fs_fd); 2767 close (fs_fd);
1635#endif 2768#endif
1636 2769
1637 if (backend_fd >= 0) 2770 if (backend_fd >= 0)
1638 close (backend_fd); 2771 close (backend_fd);
1639 2772
2773#if EV_USE_IOCP
2774 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2775#endif
1640#if EV_USE_PORT 2776#if EV_USE_PORT
1641 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2777 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1642#endif 2778#endif
1643#if EV_USE_KQUEUE 2779#if EV_USE_KQUEUE
1644 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2780 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1671 array_free (periodic, EMPTY); 2807 array_free (periodic, EMPTY);
1672#endif 2808#endif
1673#if EV_FORK_ENABLE 2809#if EV_FORK_ENABLE
1674 array_free (fork, EMPTY); 2810 array_free (fork, EMPTY);
1675#endif 2811#endif
2812#if EV_CLEANUP_ENABLE
2813 array_free (cleanup, EMPTY);
2814#endif
1676 array_free (prepare, EMPTY); 2815 array_free (prepare, EMPTY);
1677 array_free (check, EMPTY); 2816 array_free (check, EMPTY);
1678#if EV_ASYNC_ENABLE 2817#if EV_ASYNC_ENABLE
1679 array_free (async, EMPTY); 2818 array_free (async, EMPTY);
1680#endif 2819#endif
1681 2820
1682 backend = 0; 2821 backend = 0;
2822
2823#if EV_MULTIPLICITY
2824 if (ev_is_default_loop (EV_A))
2825#endif
2826 ev_default_loop_ptr = 0;
2827#if EV_MULTIPLICITY
2828 else
2829 ev_free (EV_A);
2830#endif
1683} 2831}
1684 2832
1685#if EV_USE_INOTIFY 2833#if EV_USE_INOTIFY
1686inline_size void infy_fork (EV_P); 2834inline_size void infy_fork (EV_P);
1687#endif 2835#endif
… …
1700#endif 2848#endif
1701#if EV_USE_INOTIFY 2849#if EV_USE_INOTIFY
1702 infy_fork (EV_A); 2850 infy_fork (EV_A);
1703#endif 2851#endif
1704 2852
2853#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1705 if (ev_is_active (&pipe_w)) 2854 if (ev_is_active (&pipe_w))
1706 { 2855 {
1707 /* this "locks" the handlers against writing to the pipe */ 2856 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1708 /* while we modify the fd vars */
1709 gotsig = 1;
1710#if EV_ASYNC_ENABLE
1711 gotasync = 1;
1712#endif
1713 2857
1714 ev_ref (EV_A); 2858 ev_ref (EV_A);
1715 ev_io_stop (EV_A_ &pipe_w); 2859 ev_io_stop (EV_A_ &pipe_w);
1716 2860
1717#if EV_USE_EVENTFD
1718 if (evfd >= 0)
1719 close (evfd);
1720#endif
1721
1722 if (evpipe [0] >= 0) 2861 if (evpipe [0] >= 0)
1723 { 2862 EV_WIN32_CLOSE_FD (evpipe [0]);
1724 close (evpipe [0]);
1725 close (evpipe [1]);
1726 }
1727 2863
1728 evpipe_init (EV_A); 2864 evpipe_init (EV_A);
1729 /* now iterate over everything, in case we missed something */ 2865 /* iterate over everything, in case we missed something before */
1730 pipecb (EV_A_ &pipe_w, EV_READ); 2866 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1731 } 2867 }
2868#endif
1732 2869
1733 postfork = 0; 2870 postfork = 0;
1734} 2871}
1735 2872
1736#if EV_MULTIPLICITY 2873#if EV_MULTIPLICITY
1737 2874
1738struct ev_loop * 2875struct ev_loop * ecb_cold
1739ev_loop_new (unsigned int flags) 2876ev_loop_new (unsigned int flags) EV_THROW
1740{ 2877{
1741 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2878 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1742 2879
1743 memset (EV_A, 0, sizeof (struct ev_loop)); 2880 memset (EV_A, 0, sizeof (struct ev_loop));
1744 loop_init (EV_A_ flags); 2881 loop_init (EV_A_ flags);
1745 2882
1746 if (ev_backend (EV_A)) 2883 if (ev_backend (EV_A))
1747 return EV_A; 2884 return EV_A;
1748 2885
2886 ev_free (EV_A);
1749 return 0; 2887 return 0;
1750} 2888}
1751 2889
1752void
1753ev_loop_destroy (EV_P)
1754{
1755 loop_destroy (EV_A);
1756 ev_free (loop);
1757}
1758
1759void
1760ev_loop_fork (EV_P)
1761{
1762 postfork = 1; /* must be in line with ev_default_fork */
1763}
1764#endif /* multiplicity */ 2890#endif /* multiplicity */
1765 2891
1766#if EV_VERIFY 2892#if EV_VERIFY
1767static void noinline 2893static void noinline ecb_cold
1768verify_watcher (EV_P_ W w) 2894verify_watcher (EV_P_ W w)
1769{ 2895{
1770 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2896 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1771 2897
1772 if (w->pending) 2898 if (w->pending)
1773 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2899 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1774} 2900}
1775 2901
1776static void noinline 2902static void noinline ecb_cold
1777verify_heap (EV_P_ ANHE *heap, int N) 2903verify_heap (EV_P_ ANHE *heap, int N)
1778{ 2904{
1779 int i; 2905 int i;
1780 2906
1781 for (i = HEAP0; i < N + HEAP0; ++i) 2907 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1786 2912
1787 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2913 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1788 } 2914 }
1789} 2915}
1790 2916
1791static void noinline 2917static void noinline ecb_cold
1792array_verify (EV_P_ W *ws, int cnt) 2918array_verify (EV_P_ W *ws, int cnt)
1793{ 2919{
1794 while (cnt--) 2920 while (cnt--)
1795 { 2921 {
1796 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2922 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1797 verify_watcher (EV_A_ ws [cnt]); 2923 verify_watcher (EV_A_ ws [cnt]);
1798 } 2924 }
1799} 2925}
1800#endif 2926#endif
1801 2927
1802#if EV_MINIMAL < 2 2928#if EV_FEATURE_API
1803void 2929void ecb_cold
1804ev_loop_verify (EV_P) 2930ev_verify (EV_P) EV_THROW
1805{ 2931{
1806#if EV_VERIFY 2932#if EV_VERIFY
1807 int i; 2933 int i;
1808 WL w; 2934 WL w, w2;
1809 2935
1810 assert (activecnt >= -1); 2936 assert (activecnt >= -1);
1811 2937
1812 assert (fdchangemax >= fdchangecnt); 2938 assert (fdchangemax >= fdchangecnt);
1813 for (i = 0; i < fdchangecnt; ++i) 2939 for (i = 0; i < fdchangecnt; ++i)
1814 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 2940 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1815 2941
1816 assert (anfdmax >= 0); 2942 assert (anfdmax >= 0);
1817 for (i = 0; i < anfdmax; ++i) 2943 for (i = 0; i < anfdmax; ++i)
2944 {
2945 int j = 0;
2946
1818 for (w = anfds [i].head; w; w = w->next) 2947 for (w = w2 = anfds [i].head; w; w = w->next)
1819 { 2948 {
1820 verify_watcher (EV_A_ (W)w); 2949 verify_watcher (EV_A_ (W)w);
2950
2951 if (j++ & 1)
2952 {
2953 assert (("libev: io watcher list contains a loop", w != w2));
2954 w2 = w2->next;
2955 }
2956
1821 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 2957 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1822 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 2958 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1823 } 2959 }
2960 }
1824 2961
1825 assert (timermax >= timercnt); 2962 assert (timermax >= timercnt);
1826 verify_heap (EV_A_ timers, timercnt); 2963 verify_heap (EV_A_ timers, timercnt);
1827 2964
1828#if EV_PERIODIC_ENABLE 2965#if EV_PERIODIC_ENABLE
… …
1843#if EV_FORK_ENABLE 2980#if EV_FORK_ENABLE
1844 assert (forkmax >= forkcnt); 2981 assert (forkmax >= forkcnt);
1845 array_verify (EV_A_ (W *)forks, forkcnt); 2982 array_verify (EV_A_ (W *)forks, forkcnt);
1846#endif 2983#endif
1847 2984
2985#if EV_CLEANUP_ENABLE
2986 assert (cleanupmax >= cleanupcnt);
2987 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2988#endif
2989
1848#if EV_ASYNC_ENABLE 2990#if EV_ASYNC_ENABLE
1849 assert (asyncmax >= asynccnt); 2991 assert (asyncmax >= asynccnt);
1850 array_verify (EV_A_ (W *)asyncs, asynccnt); 2992 array_verify (EV_A_ (W *)asyncs, asynccnt);
1851#endif 2993#endif
1852 2994
2995#if EV_PREPARE_ENABLE
1853 assert (preparemax >= preparecnt); 2996 assert (preparemax >= preparecnt);
1854 array_verify (EV_A_ (W *)prepares, preparecnt); 2997 array_verify (EV_A_ (W *)prepares, preparecnt);
2998#endif
1855 2999
3000#if EV_CHECK_ENABLE
1856 assert (checkmax >= checkcnt); 3001 assert (checkmax >= checkcnt);
1857 array_verify (EV_A_ (W *)checks, checkcnt); 3002 array_verify (EV_A_ (W *)checks, checkcnt);
3003#endif
1858 3004
1859# if 0 3005# if 0
3006#if EV_CHILD_ENABLE
1860 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 3007 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1861 for (signum = EV_NSIG; signum--; ) if (signals [signum].gotsig) 3008 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
3009#endif
1862# endif 3010# endif
1863#endif 3011#endif
1864} 3012}
1865#endif 3013#endif
1866 3014
1867#if EV_MULTIPLICITY 3015#if EV_MULTIPLICITY
1868struct ev_loop * 3016struct ev_loop * ecb_cold
1869ev_default_loop_init (unsigned int flags)
1870#else 3017#else
1871int 3018int
3019#endif
1872ev_default_loop (unsigned int flags) 3020ev_default_loop (unsigned int flags) EV_THROW
1873#endif
1874{ 3021{
1875 if (!ev_default_loop_ptr) 3022 if (!ev_default_loop_ptr)
1876 { 3023 {
1877#if EV_MULTIPLICITY 3024#if EV_MULTIPLICITY
1878 EV_P = ev_default_loop_ptr = &default_loop_struct; 3025 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1882 3029
1883 loop_init (EV_A_ flags); 3030 loop_init (EV_A_ flags);
1884 3031
1885 if (ev_backend (EV_A)) 3032 if (ev_backend (EV_A))
1886 { 3033 {
1887#ifndef _WIN32 3034#if EV_CHILD_ENABLE
1888 ev_signal_init (&childev, childcb, SIGCHLD); 3035 ev_signal_init (&childev, childcb, SIGCHLD);
1889 ev_set_priority (&childev, EV_MAXPRI); 3036 ev_set_priority (&childev, EV_MAXPRI);
1890 ev_signal_start (EV_A_ &childev); 3037 ev_signal_start (EV_A_ &childev);
1891 ev_unref (EV_A); /* child watcher should not keep loop alive */ 3038 ev_unref (EV_A); /* child watcher should not keep loop alive */
1892#endif 3039#endif
… …
1897 3044
1898 return ev_default_loop_ptr; 3045 return ev_default_loop_ptr;
1899} 3046}
1900 3047
1901void 3048void
1902ev_default_destroy (void) 3049ev_loop_fork (EV_P) EV_THROW
1903{ 3050{
1904#if EV_MULTIPLICITY 3051 postfork = 1;
1905 EV_P = ev_default_loop_ptr;
1906#endif
1907
1908 ev_default_loop_ptr = 0;
1909
1910#ifndef _WIN32
1911 ev_ref (EV_A); /* child watcher */
1912 ev_signal_stop (EV_A_ &childev);
1913#endif
1914
1915 loop_destroy (EV_A);
1916}
1917
1918void
1919ev_default_fork (void)
1920{
1921#if EV_MULTIPLICITY
1922 EV_P = ev_default_loop_ptr;
1923#endif
1924
1925 postfork = 1; /* must be in line with ev_loop_fork */
1926} 3052}
1927 3053
1928/*****************************************************************************/ 3054/*****************************************************************************/
1929 3055
1930void 3056void
… …
1932{ 3058{
1933 EV_CB_INVOKE ((W)w, revents); 3059 EV_CB_INVOKE ((W)w, revents);
1934} 3060}
1935 3061
1936unsigned int 3062unsigned int
1937ev_pending_count (EV_P) 3063ev_pending_count (EV_P) EV_THROW
1938{ 3064{
1939 int pri; 3065 int pri;
1940 unsigned int count = 0; 3066 unsigned int count = 0;
1941 3067
1942 for (pri = NUMPRI; pri--; ) 3068 for (pri = NUMPRI; pri--; )
… …
1946} 3072}
1947 3073
1948void noinline 3074void noinline
1949ev_invoke_pending (EV_P) 3075ev_invoke_pending (EV_P)
1950{ 3076{
1951 int pri; 3077 pendingpri = NUMPRI;
1952 3078
1953 for (pri = NUMPRI; pri--; ) 3079 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */
3080 {
3081 --pendingpri;
3082
1954 while (pendingcnt [pri]) 3083 while (pendingcnt [pendingpri])
1955 { 3084 {
1956 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3085 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
1957 3086
1958 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1959 /* ^ this is no longer true, as pending_w could be here */
1960
1961 p->w->pending = 0; 3087 p->w->pending = 0;
1962 EV_CB_INVOKE (p->w, p->events); 3088 EV_CB_INVOKE (p->w, p->events);
1963 EV_FREQUENT_CHECK; 3089 EV_FREQUENT_CHECK;
1964 } 3090 }
3091 }
1965} 3092}
1966 3093
1967#if EV_IDLE_ENABLE 3094#if EV_IDLE_ENABLE
1968/* make idle watchers pending. this handles the "call-idle */ 3095/* make idle watchers pending. this handles the "call-idle */
1969/* only when higher priorities are idle" logic */ 3096/* only when higher priorities are idle" logic */
… …
2021 EV_FREQUENT_CHECK; 3148 EV_FREQUENT_CHECK;
2022 feed_reverse (EV_A_ (W)w); 3149 feed_reverse (EV_A_ (W)w);
2023 } 3150 }
2024 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 3151 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
2025 3152
2026 feed_reverse_done (EV_A_ EV_TIMEOUT); 3153 feed_reverse_done (EV_A_ EV_TIMER);
2027 } 3154 }
2028} 3155}
2029 3156
2030#if EV_PERIODIC_ENABLE 3157#if EV_PERIODIC_ENABLE
3158
3159static void noinline
3160periodic_recalc (EV_P_ ev_periodic *w)
3161{
3162 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3163 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3164
3165 /* the above almost always errs on the low side */
3166 while (at <= ev_rt_now)
3167 {
3168 ev_tstamp nat = at + w->interval;
3169
3170 /* when resolution fails us, we use ev_rt_now */
3171 if (expect_false (nat == at))
3172 {
3173 at = ev_rt_now;
3174 break;
3175 }
3176
3177 at = nat;
3178 }
3179
3180 ev_at (w) = at;
3181}
3182
2031/* make periodics pending */ 3183/* make periodics pending */
2032inline_size void 3184inline_size void
2033periodics_reify (EV_P) 3185periodics_reify (EV_P)
2034{ 3186{
2035 EV_FREQUENT_CHECK; 3187 EV_FREQUENT_CHECK;
2036 3188
2037 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3189 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2038 { 3190 {
2039 int feed_count = 0;
2040
2041 do 3191 do
2042 { 3192 {
2043 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3193 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2044 3194
2045 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3195 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2054 ANHE_at_cache (periodics [HEAP0]); 3204 ANHE_at_cache (periodics [HEAP0]);
2055 downheap (periodics, periodiccnt, HEAP0); 3205 downheap (periodics, periodiccnt, HEAP0);
2056 } 3206 }
2057 else if (w->interval) 3207 else if (w->interval)
2058 { 3208 {
2059 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3209 periodic_recalc (EV_A_ w);
2060 /* if next trigger time is not sufficiently in the future, put it there */
2061 /* this might happen because of floating point inexactness */
2062 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2063 {
2064 ev_at (w) += w->interval;
2065
2066 /* if interval is unreasonably low we might still have a time in the past */
2067 /* so correct this. this will make the periodic very inexact, but the user */
2068 /* has effectively asked to get triggered more often than possible */
2069 if (ev_at (w) < ev_rt_now)
2070 ev_at (w) = ev_rt_now;
2071 }
2072
2073 ANHE_at_cache (periodics [HEAP0]); 3210 ANHE_at_cache (periodics [HEAP0]);
2074 downheap (periodics, periodiccnt, HEAP0); 3211 downheap (periodics, periodiccnt, HEAP0);
2075 } 3212 }
2076 else 3213 else
2077 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3214 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2084 feed_reverse_done (EV_A_ EV_PERIODIC); 3221 feed_reverse_done (EV_A_ EV_PERIODIC);
2085 } 3222 }
2086} 3223}
2087 3224
2088/* simply recalculate all periodics */ 3225/* simply recalculate all periodics */
2089/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 3226/* TODO: maybe ensure that at least one event happens when jumping forward? */
2090static void noinline 3227static void noinline ecb_cold
2091periodics_reschedule (EV_P) 3228periodics_reschedule (EV_P)
2092{ 3229{
2093 int i; 3230 int i;
2094 3231
2095 /* adjust periodics after time jump */ 3232 /* adjust periodics after time jump */
… …
2098 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3235 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2099 3236
2100 if (w->reschedule_cb) 3237 if (w->reschedule_cb)
2101 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3238 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2102 else if (w->interval) 3239 else if (w->interval)
2103 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3240 periodic_recalc (EV_A_ w);
2104 3241
2105 ANHE_at_cache (periodics [i]); 3242 ANHE_at_cache (periodics [i]);
2106 } 3243 }
2107 3244
2108 reheap (periodics, periodiccnt); 3245 reheap (periodics, periodiccnt);
2109} 3246}
2110#endif 3247#endif
2111 3248
2112/* adjust all timers by a given offset */ 3249/* adjust all timers by a given offset */
2113static void noinline 3250static void noinline ecb_cold
2114timers_reschedule (EV_P_ ev_tstamp adjust) 3251timers_reschedule (EV_P_ ev_tstamp adjust)
2115{ 3252{
2116 int i; 3253 int i;
2117 3254
2118 for (i = 0; i < timercnt; ++i) 3255 for (i = 0; i < timercnt; ++i)
… …
2122 ANHE_at_cache (*he); 3259 ANHE_at_cache (*he);
2123 } 3260 }
2124} 3261}
2125 3262
2126/* fetch new monotonic and realtime times from the kernel */ 3263/* fetch new monotonic and realtime times from the kernel */
2127/* also detetc if there was a timejump, and act accordingly */ 3264/* also detect if there was a timejump, and act accordingly */
2128inline_speed void 3265inline_speed void
2129time_update (EV_P_ ev_tstamp max_block) 3266time_update (EV_P_ ev_tstamp max_block)
2130{ 3267{
2131#if EV_USE_MONOTONIC 3268#if EV_USE_MONOTONIC
2132 if (expect_true (have_monotonic)) 3269 if (expect_true (have_monotonic))
… …
2155 * doesn't hurt either as we only do this on time-jumps or 3292 * doesn't hurt either as we only do this on time-jumps or
2156 * in the unlikely event of having been preempted here. 3293 * in the unlikely event of having been preempted here.
2157 */ 3294 */
2158 for (i = 4; --i; ) 3295 for (i = 4; --i; )
2159 { 3296 {
3297 ev_tstamp diff;
2160 rtmn_diff = ev_rt_now - mn_now; 3298 rtmn_diff = ev_rt_now - mn_now;
2161 3299
3300 diff = odiff - rtmn_diff;
3301
2162 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3302 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2163 return; /* all is well */ 3303 return; /* all is well */
2164 3304
2165 ev_rt_now = ev_time (); 3305 ev_rt_now = ev_time ();
2166 mn_now = get_clock (); 3306 mn_now = get_clock ();
2167 now_floor = mn_now; 3307 now_floor = mn_now;
… …
2189 3329
2190 mn_now = ev_rt_now; 3330 mn_now = ev_rt_now;
2191 } 3331 }
2192} 3332}
2193 3333
2194void 3334int
2195ev_loop (EV_P_ int flags) 3335ev_run (EV_P_ int flags)
2196{ 3336{
2197#if EV_MINIMAL < 2 3337#if EV_FEATURE_API
2198 ++loop_depth; 3338 ++loop_depth;
2199#endif 3339#endif
2200 3340
2201 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 3341 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2202 3342
2203 loop_done = EVUNLOOP_CANCEL; 3343 loop_done = EVBREAK_CANCEL;
2204 3344
2205 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 3345 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2206 3346
2207 do 3347 do
2208 { 3348 {
2209#if EV_VERIFY >= 2 3349#if EV_VERIFY >= 2
2210 ev_loop_verify (EV_A); 3350 ev_verify (EV_A);
2211#endif 3351#endif
2212 3352
2213#ifndef _WIN32 3353#ifndef _WIN32
2214 if (expect_false (curpid)) /* penalise the forking check even more */ 3354 if (expect_false (curpid)) /* penalise the forking check even more */
2215 if (expect_false (getpid () != curpid)) 3355 if (expect_false (getpid () != curpid))
… …
2227 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3367 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2228 EV_INVOKE_PENDING; 3368 EV_INVOKE_PENDING;
2229 } 3369 }
2230#endif 3370#endif
2231 3371
3372#if EV_PREPARE_ENABLE
2232 /* queue prepare watchers (and execute them) */ 3373 /* queue prepare watchers (and execute them) */
2233 if (expect_false (preparecnt)) 3374 if (expect_false (preparecnt))
2234 { 3375 {
2235 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3376 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2236 EV_INVOKE_PENDING; 3377 EV_INVOKE_PENDING;
2237 } 3378 }
3379#endif
2238 3380
2239 if (expect_false (loop_done)) 3381 if (expect_false (loop_done))
2240 break; 3382 break;
2241 3383
2242 /* we might have forked, so reify kernel state if necessary */ 3384 /* we might have forked, so reify kernel state if necessary */
… …
2249 /* calculate blocking time */ 3391 /* calculate blocking time */
2250 { 3392 {
2251 ev_tstamp waittime = 0.; 3393 ev_tstamp waittime = 0.;
2252 ev_tstamp sleeptime = 0.; 3394 ev_tstamp sleeptime = 0.;
2253 3395
3396 /* remember old timestamp for io_blocktime calculation */
3397 ev_tstamp prev_mn_now = mn_now;
3398
3399 /* update time to cancel out callback processing overhead */
3400 time_update (EV_A_ 1e100);
3401
3402 /* from now on, we want a pipe-wake-up */
3403 pipe_write_wanted = 1;
3404
3405 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3406
2254 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3407 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2255 { 3408 {
2256 /* remember old timestamp for io_blocktime calculation */
2257 ev_tstamp prev_mn_now = mn_now;
2258
2259 /* update time to cancel out callback processing overhead */
2260 time_update (EV_A_ 1e100);
2261
2262 waittime = MAX_BLOCKTIME; 3409 waittime = MAX_BLOCKTIME;
2263 3410
2264 if (timercnt) 3411 if (timercnt)
2265 { 3412 {
2266 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3413 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2267 if (waittime > to) waittime = to; 3414 if (waittime > to) waittime = to;
2268 } 3415 }
2269 3416
2270#if EV_PERIODIC_ENABLE 3417#if EV_PERIODIC_ENABLE
2271 if (periodiccnt) 3418 if (periodiccnt)
2272 { 3419 {
2273 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3420 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2274 if (waittime > to) waittime = to; 3421 if (waittime > to) waittime = to;
2275 } 3422 }
2276#endif 3423#endif
2277 3424
2278 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3425 /* don't let timeouts decrease the waittime below timeout_blocktime */
2279 if (expect_false (waittime < timeout_blocktime)) 3426 if (expect_false (waittime < timeout_blocktime))
2280 waittime = timeout_blocktime; 3427 waittime = timeout_blocktime;
3428
3429 /* at this point, we NEED to wait, so we have to ensure */
3430 /* to pass a minimum nonzero value to the backend */
3431 if (expect_false (waittime < backend_mintime))
3432 waittime = backend_mintime;
2281 3433
2282 /* extra check because io_blocktime is commonly 0 */ 3434 /* extra check because io_blocktime is commonly 0 */
2283 if (expect_false (io_blocktime)) 3435 if (expect_false (io_blocktime))
2284 { 3436 {
2285 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3437 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2286 3438
2287 if (sleeptime > waittime - backend_fudge) 3439 if (sleeptime > waittime - backend_mintime)
2288 sleeptime = waittime - backend_fudge; 3440 sleeptime = waittime - backend_mintime;
2289 3441
2290 if (expect_true (sleeptime > 0.)) 3442 if (expect_true (sleeptime > 0.))
2291 { 3443 {
2292 ev_sleep (sleeptime); 3444 ev_sleep (sleeptime);
2293 waittime -= sleeptime; 3445 waittime -= sleeptime;
2294 } 3446 }
2295 } 3447 }
2296 } 3448 }
2297 3449
2298#if EV_MINIMAL < 2 3450#if EV_FEATURE_API
2299 ++loop_count; 3451 ++loop_count;
2300#endif 3452#endif
2301 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3453 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2302 backend_poll (EV_A_ waittime); 3454 backend_poll (EV_A_ waittime);
2303 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 3455 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3456
3457 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3458
3459 ECB_MEMORY_FENCE_ACQUIRE;
3460 if (pipe_write_skipped)
3461 {
3462 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3463 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3464 }
3465
2304 3466
2305 /* update ev_rt_now, do magic */ 3467 /* update ev_rt_now, do magic */
2306 time_update (EV_A_ waittime + sleeptime); 3468 time_update (EV_A_ waittime + sleeptime);
2307 } 3469 }
2308 3470
… …
2315#if EV_IDLE_ENABLE 3477#if EV_IDLE_ENABLE
2316 /* queue idle watchers unless other events are pending */ 3478 /* queue idle watchers unless other events are pending */
2317 idle_reify (EV_A); 3479 idle_reify (EV_A);
2318#endif 3480#endif
2319 3481
3482#if EV_CHECK_ENABLE
2320 /* queue check watchers, to be executed first */ 3483 /* queue check watchers, to be executed first */
2321 if (expect_false (checkcnt)) 3484 if (expect_false (checkcnt))
2322 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3485 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3486#endif
2323 3487
2324 EV_INVOKE_PENDING; 3488 EV_INVOKE_PENDING;
2325 } 3489 }
2326 while (expect_true ( 3490 while (expect_true (
2327 activecnt 3491 activecnt
2328 && !loop_done 3492 && !loop_done
2329 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3493 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2330 )); 3494 ));
2331 3495
2332 if (loop_done == EVUNLOOP_ONE) 3496 if (loop_done == EVBREAK_ONE)
2333 loop_done = EVUNLOOP_CANCEL; 3497 loop_done = EVBREAK_CANCEL;
2334 3498
2335#if EV_MINIMAL < 2 3499#if EV_FEATURE_API
2336 --loop_depth; 3500 --loop_depth;
2337#endif 3501#endif
3502
3503 return activecnt;
2338} 3504}
2339 3505
2340void 3506void
2341ev_unloop (EV_P_ int how) 3507ev_break (EV_P_ int how) EV_THROW
2342{ 3508{
2343 loop_done = how; 3509 loop_done = how;
2344} 3510}
2345 3511
2346void 3512void
2347ev_ref (EV_P) 3513ev_ref (EV_P) EV_THROW
2348{ 3514{
2349 ++activecnt; 3515 ++activecnt;
2350} 3516}
2351 3517
2352void 3518void
2353ev_unref (EV_P) 3519ev_unref (EV_P) EV_THROW
2354{ 3520{
2355 --activecnt; 3521 --activecnt;
2356} 3522}
2357 3523
2358void 3524void
2359ev_now_update (EV_P) 3525ev_now_update (EV_P) EV_THROW
2360{ 3526{
2361 time_update (EV_A_ 1e100); 3527 time_update (EV_A_ 1e100);
2362} 3528}
2363 3529
2364void 3530void
2365ev_suspend (EV_P) 3531ev_suspend (EV_P) EV_THROW
2366{ 3532{
2367 ev_now_update (EV_A); 3533 ev_now_update (EV_A);
2368} 3534}
2369 3535
2370void 3536void
2371ev_resume (EV_P) 3537ev_resume (EV_P) EV_THROW
2372{ 3538{
2373 ev_tstamp mn_prev = mn_now; 3539 ev_tstamp mn_prev = mn_now;
2374 3540
2375 ev_now_update (EV_A); 3541 ev_now_update (EV_A);
2376 timers_reschedule (EV_A_ mn_now - mn_prev); 3542 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2393inline_size void 3559inline_size void
2394wlist_del (WL *head, WL elem) 3560wlist_del (WL *head, WL elem)
2395{ 3561{
2396 while (*head) 3562 while (*head)
2397 { 3563 {
2398 if (*head == elem) 3564 if (expect_true (*head == elem))
2399 { 3565 {
2400 *head = elem->next; 3566 *head = elem->next;
2401 return; 3567 break;
2402 } 3568 }
2403 3569
2404 head = &(*head)->next; 3570 head = &(*head)->next;
2405 } 3571 }
2406} 3572}
… …
2415 w->pending = 0; 3581 w->pending = 0;
2416 } 3582 }
2417} 3583}
2418 3584
2419int 3585int
2420ev_clear_pending (EV_P_ void *w) 3586ev_clear_pending (EV_P_ void *w) EV_THROW
2421{ 3587{
2422 W w_ = (W)w; 3588 W w_ = (W)w;
2423 int pending = w_->pending; 3589 int pending = w_->pending;
2424 3590
2425 if (expect_true (pending)) 3591 if (expect_true (pending))
… …
2458} 3624}
2459 3625
2460/*****************************************************************************/ 3626/*****************************************************************************/
2461 3627
2462void noinline 3628void noinline
2463ev_io_start (EV_P_ ev_io *w) 3629ev_io_start (EV_P_ ev_io *w) EV_THROW
2464{ 3630{
2465 int fd = w->fd; 3631 int fd = w->fd;
2466 3632
2467 if (expect_false (ev_is_active (w))) 3633 if (expect_false (ev_is_active (w)))
2468 return; 3634 return;
2469 3635
2470 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 3636 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2471 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 3637 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2472 3638
2473 EV_FREQUENT_CHECK; 3639 EV_FREQUENT_CHECK;
2474 3640
2475 ev_start (EV_A_ (W)w, 1); 3641 ev_start (EV_A_ (W)w, 1);
2476 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3642 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2477 wlist_add (&anfds[fd].head, (WL)w); 3643 wlist_add (&anfds[fd].head, (WL)w);
2478 3644
3645 /* common bug, apparently */
3646 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3647
2479 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3648 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2480 w->events &= ~EV__IOFDSET; 3649 w->events &= ~EV__IOFDSET;
2481 3650
2482 EV_FREQUENT_CHECK; 3651 EV_FREQUENT_CHECK;
2483} 3652}
2484 3653
2485void noinline 3654void noinline
2486ev_io_stop (EV_P_ ev_io *w) 3655ev_io_stop (EV_P_ ev_io *w) EV_THROW
2487{ 3656{
2488 clear_pending (EV_A_ (W)w); 3657 clear_pending (EV_A_ (W)w);
2489 if (expect_false (!ev_is_active (w))) 3658 if (expect_false (!ev_is_active (w)))
2490 return; 3659 return;
2491 3660
… …
2494 EV_FREQUENT_CHECK; 3663 EV_FREQUENT_CHECK;
2495 3664
2496 wlist_del (&anfds[w->fd].head, (WL)w); 3665 wlist_del (&anfds[w->fd].head, (WL)w);
2497 ev_stop (EV_A_ (W)w); 3666 ev_stop (EV_A_ (W)w);
2498 3667
2499 fd_change (EV_A_ w->fd, 1); 3668 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2500 3669
2501 EV_FREQUENT_CHECK; 3670 EV_FREQUENT_CHECK;
2502} 3671}
2503 3672
2504void noinline 3673void noinline
2505ev_timer_start (EV_P_ ev_timer *w) 3674ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2506{ 3675{
2507 if (expect_false (ev_is_active (w))) 3676 if (expect_false (ev_is_active (w)))
2508 return; 3677 return;
2509 3678
2510 ev_at (w) += mn_now; 3679 ev_at (w) += mn_now;
… …
2524 3693
2525 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3694 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2526} 3695}
2527 3696
2528void noinline 3697void noinline
2529ev_timer_stop (EV_P_ ev_timer *w) 3698ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2530{ 3699{
2531 clear_pending (EV_A_ (W)w); 3700 clear_pending (EV_A_ (W)w);
2532 if (expect_false (!ev_is_active (w))) 3701 if (expect_false (!ev_is_active (w)))
2533 return; 3702 return;
2534 3703
… …
2546 timers [active] = timers [timercnt + HEAP0]; 3715 timers [active] = timers [timercnt + HEAP0];
2547 adjustheap (timers, timercnt, active); 3716 adjustheap (timers, timercnt, active);
2548 } 3717 }
2549 } 3718 }
2550 3719
2551 EV_FREQUENT_CHECK;
2552
2553 ev_at (w) -= mn_now; 3720 ev_at (w) -= mn_now;
2554 3721
2555 ev_stop (EV_A_ (W)w); 3722 ev_stop (EV_A_ (W)w);
3723
3724 EV_FREQUENT_CHECK;
2556} 3725}
2557 3726
2558void noinline 3727void noinline
2559ev_timer_again (EV_P_ ev_timer *w) 3728ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2560{ 3729{
2561 EV_FREQUENT_CHECK; 3730 EV_FREQUENT_CHECK;
3731
3732 clear_pending (EV_A_ (W)w);
2562 3733
2563 if (ev_is_active (w)) 3734 if (ev_is_active (w))
2564 { 3735 {
2565 if (w->repeat) 3736 if (w->repeat)
2566 { 3737 {
… …
2579 3750
2580 EV_FREQUENT_CHECK; 3751 EV_FREQUENT_CHECK;
2581} 3752}
2582 3753
2583ev_tstamp 3754ev_tstamp
2584ev_timer_remaining (EV_P_ ev_timer *w) 3755ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
2585{ 3756{
2586 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3757 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2587} 3758}
2588 3759
2589#if EV_PERIODIC_ENABLE 3760#if EV_PERIODIC_ENABLE
2590void noinline 3761void noinline
2591ev_periodic_start (EV_P_ ev_periodic *w) 3762ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2592{ 3763{
2593 if (expect_false (ev_is_active (w))) 3764 if (expect_false (ev_is_active (w)))
2594 return; 3765 return;
2595 3766
2596 if (w->reschedule_cb) 3767 if (w->reschedule_cb)
2597 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3768 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2598 else if (w->interval) 3769 else if (w->interval)
2599 { 3770 {
2600 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3771 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2601 /* this formula differs from the one in periodic_reify because we do not always round up */ 3772 periodic_recalc (EV_A_ w);
2602 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2603 } 3773 }
2604 else 3774 else
2605 ev_at (w) = w->offset; 3775 ev_at (w) = w->offset;
2606 3776
2607 EV_FREQUENT_CHECK; 3777 EV_FREQUENT_CHECK;
… …
2617 3787
2618 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3788 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2619} 3789}
2620 3790
2621void noinline 3791void noinline
2622ev_periodic_stop (EV_P_ ev_periodic *w) 3792ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2623{ 3793{
2624 clear_pending (EV_A_ (W)w); 3794 clear_pending (EV_A_ (W)w);
2625 if (expect_false (!ev_is_active (w))) 3795 if (expect_false (!ev_is_active (w)))
2626 return; 3796 return;
2627 3797
… …
2639 periodics [active] = periodics [periodiccnt + HEAP0]; 3809 periodics [active] = periodics [periodiccnt + HEAP0];
2640 adjustheap (periodics, periodiccnt, active); 3810 adjustheap (periodics, periodiccnt, active);
2641 } 3811 }
2642 } 3812 }
2643 3813
2644 EV_FREQUENT_CHECK;
2645
2646 ev_stop (EV_A_ (W)w); 3814 ev_stop (EV_A_ (W)w);
3815
3816 EV_FREQUENT_CHECK;
2647} 3817}
2648 3818
2649void noinline 3819void noinline
2650ev_periodic_again (EV_P_ ev_periodic *w) 3820ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2651{ 3821{
2652 /* TODO: use adjustheap and recalculation */ 3822 /* TODO: use adjustheap and recalculation */
2653 ev_periodic_stop (EV_A_ w); 3823 ev_periodic_stop (EV_A_ w);
2654 ev_periodic_start (EV_A_ w); 3824 ev_periodic_start (EV_A_ w);
2655} 3825}
… …
2657 3827
2658#ifndef SA_RESTART 3828#ifndef SA_RESTART
2659# define SA_RESTART 0 3829# define SA_RESTART 0
2660#endif 3830#endif
2661 3831
3832#if EV_SIGNAL_ENABLE
3833
2662void noinline 3834void noinline
2663ev_signal_start (EV_P_ ev_signal *w) 3835ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2664{ 3836{
2665 if (expect_false (ev_is_active (w))) 3837 if (expect_false (ev_is_active (w)))
2666 return; 3838 return;
2667 3839
2668 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 3840 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2669 3841
2670#if EV_MULTIPLICITY 3842#if EV_MULTIPLICITY
2671 assert (("libev: tried to attach to a signal from two different loops", 3843 assert (("libev: a signal must not be attached to two different loops",
2672 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 3844 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2673 3845
2674 signals [w->signum - 1].loop = EV_A; 3846 signals [w->signum - 1].loop = EV_A;
3847 ECB_MEMORY_FENCE_RELEASE;
2675#endif 3848#endif
2676 3849
2677 EV_FREQUENT_CHECK; 3850 EV_FREQUENT_CHECK;
2678 3851
2679#if EV_USE_SIGNALFD 3852#if EV_USE_SIGNALFD
… …
2712 if (!((WL)w)->next) 3885 if (!((WL)w)->next)
2713# if EV_USE_SIGNALFD 3886# if EV_USE_SIGNALFD
2714 if (sigfd < 0) /*TODO*/ 3887 if (sigfd < 0) /*TODO*/
2715# endif 3888# endif
2716 { 3889 {
2717# if _WIN32 3890# ifdef _WIN32
3891 evpipe_init (EV_A);
3892
2718 signal (w->signum, ev_sighandler); 3893 signal (w->signum, ev_sighandler);
2719# else 3894# else
2720 struct sigaction sa; 3895 struct sigaction sa;
2721 3896
2722 evpipe_init (EV_A); 3897 evpipe_init (EV_A);
… …
2724 sa.sa_handler = ev_sighandler; 3899 sa.sa_handler = ev_sighandler;
2725 sigfillset (&sa.sa_mask); 3900 sigfillset (&sa.sa_mask);
2726 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3901 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2727 sigaction (w->signum, &sa, 0); 3902 sigaction (w->signum, &sa, 0);
2728 3903
3904 if (origflags & EVFLAG_NOSIGMASK)
3905 {
2729 sigemptyset (&sa.sa_mask); 3906 sigemptyset (&sa.sa_mask);
2730 sigaddset (&sa.sa_mask, w->signum); 3907 sigaddset (&sa.sa_mask, w->signum);
2731 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 3908 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3909 }
2732#endif 3910#endif
2733 } 3911 }
2734 3912
2735 EV_FREQUENT_CHECK; 3913 EV_FREQUENT_CHECK;
2736} 3914}
2737 3915
2738void noinline 3916void noinline
2739ev_signal_stop (EV_P_ ev_signal *w) 3917ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2740{ 3918{
2741 clear_pending (EV_A_ (W)w); 3919 clear_pending (EV_A_ (W)w);
2742 if (expect_false (!ev_is_active (w))) 3920 if (expect_false (!ev_is_active (w)))
2743 return; 3921 return;
2744 3922
… …
2747 wlist_del (&signals [w->signum - 1].head, (WL)w); 3925 wlist_del (&signals [w->signum - 1].head, (WL)w);
2748 ev_stop (EV_A_ (W)w); 3926 ev_stop (EV_A_ (W)w);
2749 3927
2750 if (!signals [w->signum - 1].head) 3928 if (!signals [w->signum - 1].head)
2751 { 3929 {
2752 #if EV_MULTIPLICITY 3930#if EV_MULTIPLICITY
2753 signals [w->signum - 1].loop = 0; /* unattach from signal */ 3931 signals [w->signum - 1].loop = 0; /* unattach from signal */
2754 #endif 3932#endif
2755 #if EV_USE_SIGNALFD 3933#if EV_USE_SIGNALFD
2756 if (sigfd >= 0) 3934 if (sigfd >= 0)
2757 { 3935 {
2758 sigprocmask (SIG_UNBLOCK, &sigfd_set, 0);//D 3936 sigset_t ss;
3937
3938 sigemptyset (&ss);
3939 sigaddset (&ss, w->signum);
2759 sigdelset (&sigfd_set, w->signum); 3940 sigdelset (&sigfd_set, w->signum);
3941
2760 signalfd (sigfd, &sigfd_set, 0); 3942 signalfd (sigfd, &sigfd_set, 0);
2761 sigprocmask (SIG_BLOCK, &sigfd_set, 0);//D 3943 sigprocmask (SIG_UNBLOCK, &ss, 0);
2762 /*TODO: maybe unblock signal? */
2763 } 3944 }
2764 else 3945 else
2765 #endif 3946#endif
2766 signal (w->signum, SIG_DFL); 3947 signal (w->signum, SIG_DFL);
2767 } 3948 }
2768 3949
2769 EV_FREQUENT_CHECK; 3950 EV_FREQUENT_CHECK;
2770} 3951}
2771 3952
3953#endif
3954
3955#if EV_CHILD_ENABLE
3956
2772void 3957void
2773ev_child_start (EV_P_ ev_child *w) 3958ev_child_start (EV_P_ ev_child *w) EV_THROW
2774{ 3959{
2775#if EV_MULTIPLICITY 3960#if EV_MULTIPLICITY
2776 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3961 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2777#endif 3962#endif
2778 if (expect_false (ev_is_active (w))) 3963 if (expect_false (ev_is_active (w)))
2779 return; 3964 return;
2780 3965
2781 EV_FREQUENT_CHECK; 3966 EV_FREQUENT_CHECK;
2782 3967
2783 ev_start (EV_A_ (W)w, 1); 3968 ev_start (EV_A_ (W)w, 1);
2784 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3969 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2785 3970
2786 EV_FREQUENT_CHECK; 3971 EV_FREQUENT_CHECK;
2787} 3972}
2788 3973
2789void 3974void
2790ev_child_stop (EV_P_ ev_child *w) 3975ev_child_stop (EV_P_ ev_child *w) EV_THROW
2791{ 3976{
2792 clear_pending (EV_A_ (W)w); 3977 clear_pending (EV_A_ (W)w);
2793 if (expect_false (!ev_is_active (w))) 3978 if (expect_false (!ev_is_active (w)))
2794 return; 3979 return;
2795 3980
2796 EV_FREQUENT_CHECK; 3981 EV_FREQUENT_CHECK;
2797 3982
2798 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3983 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2799 ev_stop (EV_A_ (W)w); 3984 ev_stop (EV_A_ (W)w);
2800 3985
2801 EV_FREQUENT_CHECK; 3986 EV_FREQUENT_CHECK;
2802} 3987}
3988
3989#endif
2803 3990
2804#if EV_STAT_ENABLE 3991#if EV_STAT_ENABLE
2805 3992
2806# ifdef _WIN32 3993# ifdef _WIN32
2807# undef lstat 3994# undef lstat
… …
2813#define MIN_STAT_INTERVAL 0.1074891 4000#define MIN_STAT_INTERVAL 0.1074891
2814 4001
2815static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4002static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2816 4003
2817#if EV_USE_INOTIFY 4004#if EV_USE_INOTIFY
2818# define EV_INOTIFY_BUFSIZE 8192 4005
4006/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
4007# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2819 4008
2820static void noinline 4009static void noinline
2821infy_add (EV_P_ ev_stat *w) 4010infy_add (EV_P_ ev_stat *w)
2822{ 4011{
2823 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); 4012 w->wd = inotify_add_watch (fs_fd, w->path,
4013 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4014 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4015 | IN_DONT_FOLLOW | IN_MASK_ADD);
2824 4016
2825 if (w->wd < 0) 4017 if (w->wd >= 0)
4018 {
4019 struct statfs sfs;
4020
4021 /* now local changes will be tracked by inotify, but remote changes won't */
4022 /* unless the filesystem is known to be local, we therefore still poll */
4023 /* also do poll on <2.6.25, but with normal frequency */
4024
4025 if (!fs_2625)
4026 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
4027 else if (!statfs (w->path, &sfs)
4028 && (sfs.f_type == 0x1373 /* devfs */
4029 || sfs.f_type == 0x4006 /* fat */
4030 || sfs.f_type == 0x4d44 /* msdos */
4031 || sfs.f_type == 0xEF53 /* ext2/3 */
4032 || sfs.f_type == 0x72b6 /* jffs2 */
4033 || sfs.f_type == 0x858458f6 /* ramfs */
4034 || sfs.f_type == 0x5346544e /* ntfs */
4035 || sfs.f_type == 0x3153464a /* jfs */
4036 || sfs.f_type == 0x9123683e /* btrfs */
4037 || sfs.f_type == 0x52654973 /* reiser3 */
4038 || sfs.f_type == 0x01021994 /* tmpfs */
4039 || sfs.f_type == 0x58465342 /* xfs */))
4040 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
4041 else
4042 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2826 { 4043 }
4044 else
4045 {
4046 /* can't use inotify, continue to stat */
2827 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4047 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2828 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2829 4048
2830 /* monitor some parent directory for speedup hints */ 4049 /* if path is not there, monitor some parent directory for speedup hints */
2831 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 4050 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2832 /* but an efficiency issue only */ 4051 /* but an efficiency issue only */
2833 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 4052 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2834 { 4053 {
2835 char path [4096]; 4054 char path [4096];
… …
2845 if (!pend || pend == path) 4064 if (!pend || pend == path)
2846 break; 4065 break;
2847 4066
2848 *pend = 0; 4067 *pend = 0;
2849 w->wd = inotify_add_watch (fs_fd, path, mask); 4068 w->wd = inotify_add_watch (fs_fd, path, mask);
2850 } 4069 }
2851 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 4070 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2852 } 4071 }
2853 } 4072 }
2854 4073
2855 if (w->wd >= 0) 4074 if (w->wd >= 0)
2856 {
2857 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4075 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2858 4076
2859 /* now local changes will be tracked by inotify, but remote changes won't */ 4077 /* now re-arm timer, if required */
2860 /* unless the filesystem it known to be local, we therefore still poll */ 4078 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2861 /* also do poll on <2.6.25, but with normal frequency */
2862 struct statfs sfs;
2863
2864 if (fs_2625 && !statfs (w->path, &sfs))
2865 if (sfs.f_type == 0x1373 /* devfs */
2866 || sfs.f_type == 0xEF53 /* ext2/3 */
2867 || sfs.f_type == 0x3153464a /* jfs */
2868 || sfs.f_type == 0x52654973 /* reiser3 */
2869 || sfs.f_type == 0x01021994 /* tempfs */
2870 || sfs.f_type == 0x58465342 /* xfs */)
2871 return;
2872
2873 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2874 ev_timer_again (EV_A_ &w->timer); 4079 ev_timer_again (EV_A_ &w->timer);
2875 } 4080 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2876} 4081}
2877 4082
2878static void noinline 4083static void noinline
2879infy_del (EV_P_ ev_stat *w) 4084infy_del (EV_P_ ev_stat *w)
2880{ 4085{
… …
2883 4088
2884 if (wd < 0) 4089 if (wd < 0)
2885 return; 4090 return;
2886 4091
2887 w->wd = -2; 4092 w->wd = -2;
2888 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 4093 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2889 wlist_del (&fs_hash [slot].head, (WL)w); 4094 wlist_del (&fs_hash [slot].head, (WL)w);
2890 4095
2891 /* remove this watcher, if others are watching it, they will rearm */ 4096 /* remove this watcher, if others are watching it, they will rearm */
2892 inotify_rm_watch (fs_fd, wd); 4097 inotify_rm_watch (fs_fd, wd);
2893} 4098}
… …
2895static void noinline 4100static void noinline
2896infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4101infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2897{ 4102{
2898 if (slot < 0) 4103 if (slot < 0)
2899 /* overflow, need to check for all hash slots */ 4104 /* overflow, need to check for all hash slots */
2900 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4105 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2901 infy_wd (EV_A_ slot, wd, ev); 4106 infy_wd (EV_A_ slot, wd, ev);
2902 else 4107 else
2903 { 4108 {
2904 WL w_; 4109 WL w_;
2905 4110
2906 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 4111 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2907 { 4112 {
2908 ev_stat *w = (ev_stat *)w_; 4113 ev_stat *w = (ev_stat *)w_;
2909 w_ = w_->next; /* lets us remove this watcher and all before it */ 4114 w_ = w_->next; /* lets us remove this watcher and all before it */
2910 4115
2911 if (w->wd == wd || wd == -1) 4116 if (w->wd == wd || wd == -1)
2912 { 4117 {
2913 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 4118 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2914 { 4119 {
2915 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4120 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2916 w->wd = -1; 4121 w->wd = -1;
2917 infy_add (EV_A_ w); /* re-add, no matter what */ 4122 infy_add (EV_A_ w); /* re-add, no matter what */
2918 } 4123 }
2919 4124
2920 stat_timer_cb (EV_A_ &w->timer, 0); 4125 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2925 4130
2926static void 4131static void
2927infy_cb (EV_P_ ev_io *w, int revents) 4132infy_cb (EV_P_ ev_io *w, int revents)
2928{ 4133{
2929 char buf [EV_INOTIFY_BUFSIZE]; 4134 char buf [EV_INOTIFY_BUFSIZE];
2930 struct inotify_event *ev = (struct inotify_event *)buf;
2931 int ofs; 4135 int ofs;
2932 int len = read (fs_fd, buf, sizeof (buf)); 4136 int len = read (fs_fd, buf, sizeof (buf));
2933 4137
2934 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 4138 for (ofs = 0; ofs < len; )
4139 {
4140 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2935 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4141 infy_wd (EV_A_ ev->wd, ev->wd, ev);
4142 ofs += sizeof (struct inotify_event) + ev->len;
4143 }
2936} 4144}
2937 4145
2938inline_size void 4146inline_size void ecb_cold
2939check_2625 (EV_P) 4147ev_check_2625 (EV_P)
2940{ 4148{
2941 /* kernels < 2.6.25 are borked 4149 /* kernels < 2.6.25 are borked
2942 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4150 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2943 */ 4151 */
2944 struct utsname buf; 4152 if (ev_linux_version () < 0x020619)
2945 int major, minor, micro;
2946
2947 if (uname (&buf))
2948 return; 4153 return;
2949 4154
2950 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2951 return;
2952
2953 if (major < 2
2954 || (major == 2 && minor < 6)
2955 || (major == 2 && minor == 6 && micro < 25))
2956 return;
2957
2958 fs_2625 = 1; 4155 fs_2625 = 1;
4156}
4157
4158inline_size int
4159infy_newfd (void)
4160{
4161#if defined IN_CLOEXEC && defined IN_NONBLOCK
4162 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
4163 if (fd >= 0)
4164 return fd;
4165#endif
4166 return inotify_init ();
2959} 4167}
2960 4168
2961inline_size void 4169inline_size void
2962infy_init (EV_P) 4170infy_init (EV_P)
2963{ 4171{
2964 if (fs_fd != -2) 4172 if (fs_fd != -2)
2965 return; 4173 return;
2966 4174
2967 fs_fd = -1; 4175 fs_fd = -1;
2968 4176
2969 check_2625 (EV_A); 4177 ev_check_2625 (EV_A);
2970 4178
2971 fs_fd = inotify_init (); 4179 fs_fd = infy_newfd ();
2972 4180
2973 if (fs_fd >= 0) 4181 if (fs_fd >= 0)
2974 { 4182 {
4183 fd_intern (fs_fd);
2975 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 4184 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2976 ev_set_priority (&fs_w, EV_MAXPRI); 4185 ev_set_priority (&fs_w, EV_MAXPRI);
2977 ev_io_start (EV_A_ &fs_w); 4186 ev_io_start (EV_A_ &fs_w);
4187 ev_unref (EV_A);
2978 } 4188 }
2979} 4189}
2980 4190
2981inline_size void 4191inline_size void
2982infy_fork (EV_P) 4192infy_fork (EV_P)
… …
2984 int slot; 4194 int slot;
2985 4195
2986 if (fs_fd < 0) 4196 if (fs_fd < 0)
2987 return; 4197 return;
2988 4198
4199 ev_ref (EV_A);
4200 ev_io_stop (EV_A_ &fs_w);
2989 close (fs_fd); 4201 close (fs_fd);
2990 fs_fd = inotify_init (); 4202 fs_fd = infy_newfd ();
2991 4203
4204 if (fs_fd >= 0)
4205 {
4206 fd_intern (fs_fd);
4207 ev_io_set (&fs_w, fs_fd, EV_READ);
4208 ev_io_start (EV_A_ &fs_w);
4209 ev_unref (EV_A);
4210 }
4211
2992 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4212 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2993 { 4213 {
2994 WL w_ = fs_hash [slot].head; 4214 WL w_ = fs_hash [slot].head;
2995 fs_hash [slot].head = 0; 4215 fs_hash [slot].head = 0;
2996 4216
2997 while (w_) 4217 while (w_)
… …
3002 w->wd = -1; 4222 w->wd = -1;
3003 4223
3004 if (fs_fd >= 0) 4224 if (fs_fd >= 0)
3005 infy_add (EV_A_ w); /* re-add, no matter what */ 4225 infy_add (EV_A_ w); /* re-add, no matter what */
3006 else 4226 else
4227 {
4228 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
4229 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3007 ev_timer_again (EV_A_ &w->timer); 4230 ev_timer_again (EV_A_ &w->timer);
4231 if (ev_is_active (&w->timer)) ev_unref (EV_A);
4232 }
3008 } 4233 }
3009 } 4234 }
3010} 4235}
3011 4236
3012#endif 4237#endif
… …
3016#else 4241#else
3017# define EV_LSTAT(p,b) lstat (p, b) 4242# define EV_LSTAT(p,b) lstat (p, b)
3018#endif 4243#endif
3019 4244
3020void 4245void
3021ev_stat_stat (EV_P_ ev_stat *w) 4246ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
3022{ 4247{
3023 if (lstat (w->path, &w->attr) < 0) 4248 if (lstat (w->path, &w->attr) < 0)
3024 w->attr.st_nlink = 0; 4249 w->attr.st_nlink = 0;
3025 else if (!w->attr.st_nlink) 4250 else if (!w->attr.st_nlink)
3026 w->attr.st_nlink = 1; 4251 w->attr.st_nlink = 1;
… …
3029static void noinline 4254static void noinline
3030stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4255stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3031{ 4256{
3032 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4257 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3033 4258
3034 /* we copy this here each the time so that */ 4259 ev_statdata prev = w->attr;
3035 /* prev has the old value when the callback gets invoked */
3036 w->prev = w->attr;
3037 ev_stat_stat (EV_A_ w); 4260 ev_stat_stat (EV_A_ w);
3038 4261
3039 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 4262 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
3040 if ( 4263 if (
3041 w->prev.st_dev != w->attr.st_dev 4264 prev.st_dev != w->attr.st_dev
3042 || w->prev.st_ino != w->attr.st_ino 4265 || prev.st_ino != w->attr.st_ino
3043 || w->prev.st_mode != w->attr.st_mode 4266 || prev.st_mode != w->attr.st_mode
3044 || w->prev.st_nlink != w->attr.st_nlink 4267 || prev.st_nlink != w->attr.st_nlink
3045 || w->prev.st_uid != w->attr.st_uid 4268 || prev.st_uid != w->attr.st_uid
3046 || w->prev.st_gid != w->attr.st_gid 4269 || prev.st_gid != w->attr.st_gid
3047 || w->prev.st_rdev != w->attr.st_rdev 4270 || prev.st_rdev != w->attr.st_rdev
3048 || w->prev.st_size != w->attr.st_size 4271 || prev.st_size != w->attr.st_size
3049 || w->prev.st_atime != w->attr.st_atime 4272 || prev.st_atime != w->attr.st_atime
3050 || w->prev.st_mtime != w->attr.st_mtime 4273 || prev.st_mtime != w->attr.st_mtime
3051 || w->prev.st_ctime != w->attr.st_ctime 4274 || prev.st_ctime != w->attr.st_ctime
3052 ) { 4275 ) {
4276 /* we only update w->prev on actual differences */
4277 /* in case we test more often than invoke the callback, */
4278 /* to ensure that prev is always different to attr */
4279 w->prev = prev;
4280
3053 #if EV_USE_INOTIFY 4281 #if EV_USE_INOTIFY
3054 if (fs_fd >= 0) 4282 if (fs_fd >= 0)
3055 { 4283 {
3056 infy_del (EV_A_ w); 4284 infy_del (EV_A_ w);
3057 infy_add (EV_A_ w); 4285 infy_add (EV_A_ w);
… …
3062 ev_feed_event (EV_A_ w, EV_STAT); 4290 ev_feed_event (EV_A_ w, EV_STAT);
3063 } 4291 }
3064} 4292}
3065 4293
3066void 4294void
3067ev_stat_start (EV_P_ ev_stat *w) 4295ev_stat_start (EV_P_ ev_stat *w) EV_THROW
3068{ 4296{
3069 if (expect_false (ev_is_active (w))) 4297 if (expect_false (ev_is_active (w)))
3070 return; 4298 return;
3071 4299
3072 ev_stat_stat (EV_A_ w); 4300 ev_stat_stat (EV_A_ w);
… …
3082 4310
3083 if (fs_fd >= 0) 4311 if (fs_fd >= 0)
3084 infy_add (EV_A_ w); 4312 infy_add (EV_A_ w);
3085 else 4313 else
3086#endif 4314#endif
4315 {
3087 ev_timer_again (EV_A_ &w->timer); 4316 ev_timer_again (EV_A_ &w->timer);
4317 ev_unref (EV_A);
4318 }
3088 4319
3089 ev_start (EV_A_ (W)w, 1); 4320 ev_start (EV_A_ (W)w, 1);
3090 4321
3091 EV_FREQUENT_CHECK; 4322 EV_FREQUENT_CHECK;
3092} 4323}
3093 4324
3094void 4325void
3095ev_stat_stop (EV_P_ ev_stat *w) 4326ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
3096{ 4327{
3097 clear_pending (EV_A_ (W)w); 4328 clear_pending (EV_A_ (W)w);
3098 if (expect_false (!ev_is_active (w))) 4329 if (expect_false (!ev_is_active (w)))
3099 return; 4330 return;
3100 4331
3101 EV_FREQUENT_CHECK; 4332 EV_FREQUENT_CHECK;
3102 4333
3103#if EV_USE_INOTIFY 4334#if EV_USE_INOTIFY
3104 infy_del (EV_A_ w); 4335 infy_del (EV_A_ w);
3105#endif 4336#endif
4337
4338 if (ev_is_active (&w->timer))
4339 {
4340 ev_ref (EV_A);
3106 ev_timer_stop (EV_A_ &w->timer); 4341 ev_timer_stop (EV_A_ &w->timer);
4342 }
3107 4343
3108 ev_stop (EV_A_ (W)w); 4344 ev_stop (EV_A_ (W)w);
3109 4345
3110 EV_FREQUENT_CHECK; 4346 EV_FREQUENT_CHECK;
3111} 4347}
3112#endif 4348#endif
3113 4349
3114#if EV_IDLE_ENABLE 4350#if EV_IDLE_ENABLE
3115void 4351void
3116ev_idle_start (EV_P_ ev_idle *w) 4352ev_idle_start (EV_P_ ev_idle *w) EV_THROW
3117{ 4353{
3118 if (expect_false (ev_is_active (w))) 4354 if (expect_false (ev_is_active (w)))
3119 return; 4355 return;
3120 4356
3121 pri_adjust (EV_A_ (W)w); 4357 pri_adjust (EV_A_ (W)w);
… …
3134 4370
3135 EV_FREQUENT_CHECK; 4371 EV_FREQUENT_CHECK;
3136} 4372}
3137 4373
3138void 4374void
3139ev_idle_stop (EV_P_ ev_idle *w) 4375ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
3140{ 4376{
3141 clear_pending (EV_A_ (W)w); 4377 clear_pending (EV_A_ (W)w);
3142 if (expect_false (!ev_is_active (w))) 4378 if (expect_false (!ev_is_active (w)))
3143 return; 4379 return;
3144 4380
… …
3156 4392
3157 EV_FREQUENT_CHECK; 4393 EV_FREQUENT_CHECK;
3158} 4394}
3159#endif 4395#endif
3160 4396
4397#if EV_PREPARE_ENABLE
3161void 4398void
3162ev_prepare_start (EV_P_ ev_prepare *w) 4399ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3163{ 4400{
3164 if (expect_false (ev_is_active (w))) 4401 if (expect_false (ev_is_active (w)))
3165 return; 4402 return;
3166 4403
3167 EV_FREQUENT_CHECK; 4404 EV_FREQUENT_CHECK;
… …
3172 4409
3173 EV_FREQUENT_CHECK; 4410 EV_FREQUENT_CHECK;
3174} 4411}
3175 4412
3176void 4413void
3177ev_prepare_stop (EV_P_ ev_prepare *w) 4414ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3178{ 4415{
3179 clear_pending (EV_A_ (W)w); 4416 clear_pending (EV_A_ (W)w);
3180 if (expect_false (!ev_is_active (w))) 4417 if (expect_false (!ev_is_active (w)))
3181 return; 4418 return;
3182 4419
… …
3191 4428
3192 ev_stop (EV_A_ (W)w); 4429 ev_stop (EV_A_ (W)w);
3193 4430
3194 EV_FREQUENT_CHECK; 4431 EV_FREQUENT_CHECK;
3195} 4432}
4433#endif
3196 4434
4435#if EV_CHECK_ENABLE
3197void 4436void
3198ev_check_start (EV_P_ ev_check *w) 4437ev_check_start (EV_P_ ev_check *w) EV_THROW
3199{ 4438{
3200 if (expect_false (ev_is_active (w))) 4439 if (expect_false (ev_is_active (w)))
3201 return; 4440 return;
3202 4441
3203 EV_FREQUENT_CHECK; 4442 EV_FREQUENT_CHECK;
… …
3208 4447
3209 EV_FREQUENT_CHECK; 4448 EV_FREQUENT_CHECK;
3210} 4449}
3211 4450
3212void 4451void
3213ev_check_stop (EV_P_ ev_check *w) 4452ev_check_stop (EV_P_ ev_check *w) EV_THROW
3214{ 4453{
3215 clear_pending (EV_A_ (W)w); 4454 clear_pending (EV_A_ (W)w);
3216 if (expect_false (!ev_is_active (w))) 4455 if (expect_false (!ev_is_active (w)))
3217 return; 4456 return;
3218 4457
… …
3227 4466
3228 ev_stop (EV_A_ (W)w); 4467 ev_stop (EV_A_ (W)w);
3229 4468
3230 EV_FREQUENT_CHECK; 4469 EV_FREQUENT_CHECK;
3231} 4470}
4471#endif
3232 4472
3233#if EV_EMBED_ENABLE 4473#if EV_EMBED_ENABLE
3234void noinline 4474void noinline
3235ev_embed_sweep (EV_P_ ev_embed *w) 4475ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3236{ 4476{
3237 ev_loop (w->other, EVLOOP_NONBLOCK); 4477 ev_run (w->other, EVRUN_NOWAIT);
3238} 4478}
3239 4479
3240static void 4480static void
3241embed_io_cb (EV_P_ ev_io *io, int revents) 4481embed_io_cb (EV_P_ ev_io *io, int revents)
3242{ 4482{
3243 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4483 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3244 4484
3245 if (ev_cb (w)) 4485 if (ev_cb (w))
3246 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4486 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3247 else 4487 else
3248 ev_loop (w->other, EVLOOP_NONBLOCK); 4488 ev_run (w->other, EVRUN_NOWAIT);
3249} 4489}
3250 4490
3251static void 4491static void
3252embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4492embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3253{ 4493{
… …
3257 EV_P = w->other; 4497 EV_P = w->other;
3258 4498
3259 while (fdchangecnt) 4499 while (fdchangecnt)
3260 { 4500 {
3261 fd_reify (EV_A); 4501 fd_reify (EV_A);
3262 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4502 ev_run (EV_A_ EVRUN_NOWAIT);
3263 } 4503 }
3264 } 4504 }
3265} 4505}
3266 4506
3267static void 4507static void
… …
3273 4513
3274 { 4514 {
3275 EV_P = w->other; 4515 EV_P = w->other;
3276 4516
3277 ev_loop_fork (EV_A); 4517 ev_loop_fork (EV_A);
3278 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4518 ev_run (EV_A_ EVRUN_NOWAIT);
3279 } 4519 }
3280 4520
3281 ev_embed_start (EV_A_ w); 4521 ev_embed_start (EV_A_ w);
3282} 4522}
3283 4523
… …
3288 ev_idle_stop (EV_A_ idle); 4528 ev_idle_stop (EV_A_ idle);
3289} 4529}
3290#endif 4530#endif
3291 4531
3292void 4532void
3293ev_embed_start (EV_P_ ev_embed *w) 4533ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3294{ 4534{
3295 if (expect_false (ev_is_active (w))) 4535 if (expect_false (ev_is_active (w)))
3296 return; 4536 return;
3297 4537
3298 { 4538 {
… …
3319 4559
3320 EV_FREQUENT_CHECK; 4560 EV_FREQUENT_CHECK;
3321} 4561}
3322 4562
3323void 4563void
3324ev_embed_stop (EV_P_ ev_embed *w) 4564ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3325{ 4565{
3326 clear_pending (EV_A_ (W)w); 4566 clear_pending (EV_A_ (W)w);
3327 if (expect_false (!ev_is_active (w))) 4567 if (expect_false (!ev_is_active (w)))
3328 return; 4568 return;
3329 4569
… …
3331 4571
3332 ev_io_stop (EV_A_ &w->io); 4572 ev_io_stop (EV_A_ &w->io);
3333 ev_prepare_stop (EV_A_ &w->prepare); 4573 ev_prepare_stop (EV_A_ &w->prepare);
3334 ev_fork_stop (EV_A_ &w->fork); 4574 ev_fork_stop (EV_A_ &w->fork);
3335 4575
4576 ev_stop (EV_A_ (W)w);
4577
3336 EV_FREQUENT_CHECK; 4578 EV_FREQUENT_CHECK;
3337} 4579}
3338#endif 4580#endif
3339 4581
3340#if EV_FORK_ENABLE 4582#if EV_FORK_ENABLE
3341void 4583void
3342ev_fork_start (EV_P_ ev_fork *w) 4584ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3343{ 4585{
3344 if (expect_false (ev_is_active (w))) 4586 if (expect_false (ev_is_active (w)))
3345 return; 4587 return;
3346 4588
3347 EV_FREQUENT_CHECK; 4589 EV_FREQUENT_CHECK;
… …
3352 4594
3353 EV_FREQUENT_CHECK; 4595 EV_FREQUENT_CHECK;
3354} 4596}
3355 4597
3356void 4598void
3357ev_fork_stop (EV_P_ ev_fork *w) 4599ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3358{ 4600{
3359 clear_pending (EV_A_ (W)w); 4601 clear_pending (EV_A_ (W)w);
3360 if (expect_false (!ev_is_active (w))) 4602 if (expect_false (!ev_is_active (w)))
3361 return; 4603 return;
3362 4604
… …
3373 4615
3374 EV_FREQUENT_CHECK; 4616 EV_FREQUENT_CHECK;
3375} 4617}
3376#endif 4618#endif
3377 4619
4620#if EV_CLEANUP_ENABLE
4621void
4622ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
4623{
4624 if (expect_false (ev_is_active (w)))
4625 return;
4626
4627 EV_FREQUENT_CHECK;
4628
4629 ev_start (EV_A_ (W)w, ++cleanupcnt);
4630 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4631 cleanups [cleanupcnt - 1] = w;
4632
4633 /* cleanup watchers should never keep a refcount on the loop */
4634 ev_unref (EV_A);
4635 EV_FREQUENT_CHECK;
4636}
4637
4638void
4639ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4640{
4641 clear_pending (EV_A_ (W)w);
4642 if (expect_false (!ev_is_active (w)))
4643 return;
4644
4645 EV_FREQUENT_CHECK;
4646 ev_ref (EV_A);
4647
4648 {
4649 int active = ev_active (w);
4650
4651 cleanups [active - 1] = cleanups [--cleanupcnt];
4652 ev_active (cleanups [active - 1]) = active;
4653 }
4654
4655 ev_stop (EV_A_ (W)w);
4656
4657 EV_FREQUENT_CHECK;
4658}
4659#endif
4660
3378#if EV_ASYNC_ENABLE 4661#if EV_ASYNC_ENABLE
3379void 4662void
3380ev_async_start (EV_P_ ev_async *w) 4663ev_async_start (EV_P_ ev_async *w) EV_THROW
3381{ 4664{
3382 if (expect_false (ev_is_active (w))) 4665 if (expect_false (ev_is_active (w)))
3383 return; 4666 return;
4667
4668 w->sent = 0;
3384 4669
3385 evpipe_init (EV_A); 4670 evpipe_init (EV_A);
3386 4671
3387 EV_FREQUENT_CHECK; 4672 EV_FREQUENT_CHECK;
3388 4673
… …
3392 4677
3393 EV_FREQUENT_CHECK; 4678 EV_FREQUENT_CHECK;
3394} 4679}
3395 4680
3396void 4681void
3397ev_async_stop (EV_P_ ev_async *w) 4682ev_async_stop (EV_P_ ev_async *w) EV_THROW
3398{ 4683{
3399 clear_pending (EV_A_ (W)w); 4684 clear_pending (EV_A_ (W)w);
3400 if (expect_false (!ev_is_active (w))) 4685 if (expect_false (!ev_is_active (w)))
3401 return; 4686 return;
3402 4687
… …
3413 4698
3414 EV_FREQUENT_CHECK; 4699 EV_FREQUENT_CHECK;
3415} 4700}
3416 4701
3417void 4702void
3418ev_async_send (EV_P_ ev_async *w) 4703ev_async_send (EV_P_ ev_async *w) EV_THROW
3419{ 4704{
3420 w->sent = 1; 4705 w->sent = 1;
3421 evpipe_write (EV_A_ &gotasync); 4706 evpipe_write (EV_A_ &async_pending);
3422} 4707}
3423#endif 4708#endif
3424 4709
3425/*****************************************************************************/ 4710/*****************************************************************************/
3426 4711
… …
3460 4745
3461 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4746 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3462} 4747}
3463 4748
3464void 4749void
3465ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4750ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3466{ 4751{
3467 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4752 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3468 4753
3469 if (expect_false (!once)) 4754 if (expect_false (!once))
3470 { 4755 {
3471 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 4756 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3472 return; 4757 return;
3473 } 4758 }
3474 4759
3475 once->cb = cb; 4760 once->cb = cb;
3476 once->arg = arg; 4761 once->arg = arg;
… …
3491} 4776}
3492 4777
3493/*****************************************************************************/ 4778/*****************************************************************************/
3494 4779
3495#if EV_WALK_ENABLE 4780#if EV_WALK_ENABLE
3496void 4781void ecb_cold
3497ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4782ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
3498{ 4783{
3499 int i, j; 4784 int i, j;
3500 ev_watcher_list *wl, *wn; 4785 ev_watcher_list *wl, *wn;
3501 4786
3502 if (types & (EV_IO | EV_EMBED)) 4787 if (types & (EV_IO | EV_EMBED))
… …
3545 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4830 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3546#endif 4831#endif
3547 4832
3548#if EV_IDLE_ENABLE 4833#if EV_IDLE_ENABLE
3549 if (types & EV_IDLE) 4834 if (types & EV_IDLE)
3550 for (j = NUMPRI; i--; ) 4835 for (j = NUMPRI; j--; )
3551 for (i = idlecnt [j]; i--; ) 4836 for (i = idlecnt [j]; i--; )
3552 cb (EV_A_ EV_IDLE, idles [j][i]); 4837 cb (EV_A_ EV_IDLE, idles [j][i]);
3553#endif 4838#endif
3554 4839
3555#if EV_FORK_ENABLE 4840#if EV_FORK_ENABLE
… …
3563 if (types & EV_ASYNC) 4848 if (types & EV_ASYNC)
3564 for (i = asynccnt; i--; ) 4849 for (i = asynccnt; i--; )
3565 cb (EV_A_ EV_ASYNC, asyncs [i]); 4850 cb (EV_A_ EV_ASYNC, asyncs [i]);
3566#endif 4851#endif
3567 4852
4853#if EV_PREPARE_ENABLE
3568 if (types & EV_PREPARE) 4854 if (types & EV_PREPARE)
3569 for (i = preparecnt; i--; ) 4855 for (i = preparecnt; i--; )
3570#if EV_EMBED_ENABLE 4856# if EV_EMBED_ENABLE
3571 if (ev_cb (prepares [i]) != embed_prepare_cb) 4857 if (ev_cb (prepares [i]) != embed_prepare_cb)
3572#endif 4858# endif
3573 cb (EV_A_ EV_PREPARE, prepares [i]); 4859 cb (EV_A_ EV_PREPARE, prepares [i]);
4860#endif
3574 4861
4862#if EV_CHECK_ENABLE
3575 if (types & EV_CHECK) 4863 if (types & EV_CHECK)
3576 for (i = checkcnt; i--; ) 4864 for (i = checkcnt; i--; )
3577 cb (EV_A_ EV_CHECK, checks [i]); 4865 cb (EV_A_ EV_CHECK, checks [i]);
4866#endif
3578 4867
4868#if EV_SIGNAL_ENABLE
3579 if (types & EV_SIGNAL) 4869 if (types & EV_SIGNAL)
3580 for (i = 0; i < EV_NSIG - 1; ++i) 4870 for (i = 0; i < EV_NSIG - 1; ++i)
3581 for (wl = signals [i].head; wl; ) 4871 for (wl = signals [i].head; wl; )
3582 { 4872 {
3583 wn = wl->next; 4873 wn = wl->next;
3584 cb (EV_A_ EV_SIGNAL, wl); 4874 cb (EV_A_ EV_SIGNAL, wl);
3585 wl = wn; 4875 wl = wn;
3586 } 4876 }
4877#endif
3587 4878
4879#if EV_CHILD_ENABLE
3588 if (types & EV_CHILD) 4880 if (types & EV_CHILD)
3589 for (i = EV_PID_HASHSIZE; i--; ) 4881 for (i = (EV_PID_HASHSIZE); i--; )
3590 for (wl = childs [i]; wl; ) 4882 for (wl = childs [i]; wl; )
3591 { 4883 {
3592 wn = wl->next; 4884 wn = wl->next;
3593 cb (EV_A_ EV_CHILD, wl); 4885 cb (EV_A_ EV_CHILD, wl);
3594 wl = wn; 4886 wl = wn;
3595 } 4887 }
4888#endif
3596/* EV_STAT 0x00001000 /* stat data changed */ 4889/* EV_STAT 0x00001000 /* stat data changed */
3597/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 4890/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3598} 4891}
3599#endif 4892#endif
3600 4893
3601#if EV_MULTIPLICITY 4894#if EV_MULTIPLICITY
3602 #include "ev_wrap.h" 4895 #include "ev_wrap.h"
3603#endif 4896#endif
3604 4897
3605#ifdef __cplusplus
3606}
3607#endif
3608

Diff Legend

– Removed lines
+ Added lines
< Changed lines
> Changed lines