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Comparing libev/ev.c (file contents):
Revision 1.189 by root, Thu Dec 20 10:12:22 2007 UTC vs.
Revision 1.355 by root, Fri Oct 22 10:09:12 2010 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010 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 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * modification, are permitted provided that the following conditions are 8 * tion, are permitted provided that the following conditions are met:
9 * met: 9 *
10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer.
12 *
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 *
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-
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-
21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
22 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
23 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
24 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
25 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
26 * OF THE POSSIBILITY OF SUCH DAMAGE.
10 * 27 *
11 * * Redistributions of source code must retain the above copyright 28 * Alternatively, the contents of this file may be used under the terms of
12 * notice, this list of conditions and the following disclaimer. 29 * the GNU General Public License ("GPL") version 2 or any later version,
13 * 30 * in which case the provisions of the GPL are applicable instead of
14 * * Redistributions in binary form must reproduce the above 31 * the above. If you wish to allow the use of your version of this file
15 * copyright notice, this list of conditions and the following 32 * only under the terms of the GPL and not to allow others to use your
16 * disclaimer in the documentation and/or other materials provided 33 * version of this file under the BSD license, indicate your decision
17 * with the distribution. 34 * by deleting the provisions above and replace them with the notice
18 * 35 * and other provisions required by the GPL. If you do not delete the
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 36 * provisions above, a recipient may use your version of this file under
20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 37 * either the BSD or the GPL.
21 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
22 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
23 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
24 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
25 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 */ 38 */
31 39
32#ifdef __cplusplus 40/* this big block deduces configuration from config.h */
33extern "C" {
34#endif
35
36#ifndef EV_STANDALONE 41#ifndef EV_STANDALONE
37# ifdef EV_CONFIG_H 42# ifdef EV_CONFIG_H
38# include EV_CONFIG_H 43# include EV_CONFIG_H
39# else 44# else
40# include "config.h" 45# include "config.h"
41# endif 46# endif
42 47
48# if HAVE_CLOCK_SYSCALL
49# ifndef EV_USE_CLOCK_SYSCALL
50# define EV_USE_CLOCK_SYSCALL 1
51# ifndef EV_USE_REALTIME
52# define EV_USE_REALTIME 0
53# endif
54# ifndef EV_USE_MONOTONIC
55# define EV_USE_MONOTONIC 1
56# endif
57# endif
58# elif !defined(EV_USE_CLOCK_SYSCALL)
59# define EV_USE_CLOCK_SYSCALL 0
60# endif
61
43# if HAVE_CLOCK_GETTIME 62# if HAVE_CLOCK_GETTIME
44# ifndef EV_USE_MONOTONIC 63# ifndef EV_USE_MONOTONIC
45# define EV_USE_MONOTONIC 1 64# define EV_USE_MONOTONIC 1
46# endif 65# endif
47# ifndef EV_USE_REALTIME 66# ifndef EV_USE_REALTIME
48# define EV_USE_REALTIME 1 67# define EV_USE_REALTIME 0
49# endif 68# endif
50# else 69# else
51# ifndef EV_USE_MONOTONIC 70# ifndef EV_USE_MONOTONIC
52# define EV_USE_MONOTONIC 0 71# define EV_USE_MONOTONIC 0
53# endif 72# endif
54# ifndef EV_USE_REALTIME 73# ifndef EV_USE_REALTIME
55# define EV_USE_REALTIME 0 74# define EV_USE_REALTIME 0
56# endif 75# endif
57# endif 76# endif
58 77
78# if HAVE_NANOSLEEP
59# ifndef EV_USE_SELECT 79# ifndef EV_USE_NANOSLEEP
60# if HAVE_SELECT && HAVE_SYS_SELECT_H 80# define EV_USE_NANOSLEEP EV_FEATURE_OS
61# define EV_USE_SELECT 1
62# else
63# define EV_USE_SELECT 0
64# endif 81# endif
82# else
83# undef EV_USE_NANOSLEEP
84# define EV_USE_NANOSLEEP 0
65# endif 85# endif
66 86
87# if HAVE_SELECT && HAVE_SYS_SELECT_H
67# ifndef EV_USE_POLL 88# ifndef EV_USE_SELECT
68# if HAVE_POLL && HAVE_POLL_H 89# define EV_USE_SELECT EV_FEATURE_BACKENDS
69# define EV_USE_POLL 1
70# else
71# define EV_USE_POLL 0
72# endif 90# endif
91# else
92# undef EV_USE_SELECT
93# define EV_USE_SELECT 0
94# endif
95
96# if HAVE_POLL && HAVE_POLL_H
97# ifndef EV_USE_POLL
98# define EV_USE_POLL EV_FEATURE_BACKENDS
99# endif
100# else
101# undef EV_USE_POLL
102# define EV_USE_POLL 0
73# endif 103# endif
74 104
75# ifndef EV_USE_EPOLL
76# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 105# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
77# define EV_USE_EPOLL 1 106# ifndef EV_USE_EPOLL
78# else 107# define EV_USE_EPOLL EV_FEATURE_BACKENDS
79# define EV_USE_EPOLL 0
80# endif 108# endif
109# else
110# undef EV_USE_EPOLL
111# define EV_USE_EPOLL 0
81# endif 112# endif
82 113
114# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
83# ifndef EV_USE_KQUEUE 115# ifndef EV_USE_KQUEUE
84# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 116# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
85# define EV_USE_KQUEUE 1
86# else
87# define EV_USE_KQUEUE 0
88# endif 117# endif
118# else
119# undef EV_USE_KQUEUE
120# define EV_USE_KQUEUE 0
89# endif 121# endif
90 122
91# ifndef EV_USE_PORT
92# if HAVE_PORT_H && HAVE_PORT_CREATE 123# if HAVE_PORT_H && HAVE_PORT_CREATE
93# define EV_USE_PORT 1 124# ifndef EV_USE_PORT
94# else 125# define EV_USE_PORT EV_FEATURE_BACKENDS
95# define EV_USE_PORT 0
96# endif 126# endif
127# else
128# undef EV_USE_PORT
129# define EV_USE_PORT 0
97# endif 130# endif
98 131
99# ifndef EV_USE_INOTIFY
100# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 132# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
101# define EV_USE_INOTIFY 1 133# ifndef EV_USE_INOTIFY
102# else
103# define EV_USE_INOTIFY 0 134# define EV_USE_INOTIFY EV_FEATURE_OS
104# endif 135# endif
136# else
137# undef EV_USE_INOTIFY
138# define EV_USE_INOTIFY 0
105# endif 139# endif
106 140
141# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
142# ifndef EV_USE_SIGNALFD
143# define EV_USE_SIGNALFD EV_FEATURE_OS
144# endif
145# else
146# undef EV_USE_SIGNALFD
147# define EV_USE_SIGNALFD 0
148# endif
149
150# if HAVE_EVENTFD
151# ifndef EV_USE_EVENTFD
152# define EV_USE_EVENTFD EV_FEATURE_OS
153# endif
154# else
155# undef EV_USE_EVENTFD
156# define EV_USE_EVENTFD 0
157# endif
158
107#endif 159#endif
108 160
109#include <math.h> 161#include <math.h>
110#include <stdlib.h> 162#include <stdlib.h>
163#include <string.h>
111#include <fcntl.h> 164#include <fcntl.h>
112#include <stddef.h> 165#include <stddef.h>
113 166
114#include <stdio.h> 167#include <stdio.h>
115 168
116#include <assert.h> 169#include <assert.h>
117#include <errno.h> 170#include <errno.h>
118#include <sys/types.h> 171#include <sys/types.h>
119#include <time.h> 172#include <time.h>
173#include <limits.h>
120 174
121#include <signal.h> 175#include <signal.h>
122 176
123#ifdef EV_H 177#ifdef EV_H
124# include EV_H 178# include EV_H
125#else 179#else
126# include "ev.h" 180# include "ev.h"
127#endif 181#endif
182
183EV_CPP(extern "C" {)
128 184
129#ifndef _WIN32 185#ifndef _WIN32
130# include <sys/time.h> 186# include <sys/time.h>
131# include <sys/wait.h> 187# include <sys/wait.h>
132# include <unistd.h> 188# include <unistd.h>
133#else 189#else
190# include <io.h>
134# define WIN32_LEAN_AND_MEAN 191# define WIN32_LEAN_AND_MEAN
135# include <windows.h> 192# include <windows.h>
136# ifndef EV_SELECT_IS_WINSOCKET 193# ifndef EV_SELECT_IS_WINSOCKET
137# define EV_SELECT_IS_WINSOCKET 1 194# define EV_SELECT_IS_WINSOCKET 1
138# endif 195# endif
196# undef EV_AVOID_STDIO
197#endif
198
199/* OS X, in its infinite idiocy, actually HARDCODES
200 * a limit of 1024 into their select. Where people have brains,
201 * OS X engineers apparently have a vacuum. Or maybe they were
202 * ordered to have a vacuum, or they do anything for money.
203 * This might help. Or not.
204 */
205#define _DARWIN_UNLIMITED_SELECT 1
206
207/* this block tries to deduce configuration from header-defined symbols and defaults */
208
209/* try to deduce the maximum number of signals on this platform */
210#if defined (EV_NSIG)
211/* use what's provided */
212#elif defined (NSIG)
213# define EV_NSIG (NSIG)
214#elif defined(_NSIG)
215# define EV_NSIG (_NSIG)
216#elif defined (SIGMAX)
217# define EV_NSIG (SIGMAX+1)
218#elif defined (SIG_MAX)
219# define EV_NSIG (SIG_MAX+1)
220#elif defined (_SIG_MAX)
221# define EV_NSIG (_SIG_MAX+1)
222#elif defined (MAXSIG)
223# define EV_NSIG (MAXSIG+1)
224#elif defined (MAX_SIG)
225# define EV_NSIG (MAX_SIG+1)
226#elif defined (SIGARRAYSIZE)
227# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
228#elif defined (_sys_nsig)
229# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
230#else
231# error "unable to find value for NSIG, please report"
232/* to make it compile regardless, just remove the above line, */
233/* but consider reporting it, too! :) */
234# define EV_NSIG 65
235#endif
236
237#ifndef EV_USE_CLOCK_SYSCALL
238# if __linux && __GLIBC__ >= 2
239# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
240# else
241# define EV_USE_CLOCK_SYSCALL 0
139#endif 242# endif
140 243#endif
141/**/
142 244
143#ifndef EV_USE_MONOTONIC 245#ifndef EV_USE_MONOTONIC
246# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
247# define EV_USE_MONOTONIC EV_FEATURE_OS
248# else
144# define EV_USE_MONOTONIC 0 249# define EV_USE_MONOTONIC 0
250# endif
145#endif 251#endif
146 252
147#ifndef EV_USE_REALTIME 253#ifndef EV_USE_REALTIME
148# define EV_USE_REALTIME 0 254# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
255#endif
256
257#ifndef EV_USE_NANOSLEEP
258# if _POSIX_C_SOURCE >= 199309L
259# define EV_USE_NANOSLEEP EV_FEATURE_OS
260# else
261# define EV_USE_NANOSLEEP 0
262# endif
149#endif 263#endif
150 264
151#ifndef EV_USE_SELECT 265#ifndef EV_USE_SELECT
152# define EV_USE_SELECT 1 266# define EV_USE_SELECT EV_FEATURE_BACKENDS
153#endif 267#endif
154 268
155#ifndef EV_USE_POLL 269#ifndef EV_USE_POLL
156# ifdef _WIN32 270# ifdef _WIN32
157# define EV_USE_POLL 0 271# define EV_USE_POLL 0
158# else 272# else
159# define EV_USE_POLL 1 273# define EV_USE_POLL EV_FEATURE_BACKENDS
160# endif 274# endif
161#endif 275#endif
162 276
163#ifndef EV_USE_EPOLL 277#ifndef EV_USE_EPOLL
278# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
279# define EV_USE_EPOLL EV_FEATURE_BACKENDS
280# else
164# define EV_USE_EPOLL 0 281# define EV_USE_EPOLL 0
282# endif
165#endif 283#endif
166 284
167#ifndef EV_USE_KQUEUE 285#ifndef EV_USE_KQUEUE
168# define EV_USE_KQUEUE 0 286# define EV_USE_KQUEUE 0
169#endif 287#endif
… …
171#ifndef EV_USE_PORT 289#ifndef EV_USE_PORT
172# define EV_USE_PORT 0 290# define EV_USE_PORT 0
173#endif 291#endif
174 292
175#ifndef EV_USE_INOTIFY 293#ifndef EV_USE_INOTIFY
294# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
295# define EV_USE_INOTIFY EV_FEATURE_OS
296# else
176# define EV_USE_INOTIFY 0 297# define EV_USE_INOTIFY 0
298# endif
177#endif 299#endif
178 300
179#ifndef EV_PID_HASHSIZE 301#ifndef EV_PID_HASHSIZE
180# if EV_MINIMAL 302# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
181# define EV_PID_HASHSIZE 1 303#endif
304
305#ifndef EV_INOTIFY_HASHSIZE
306# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
307#endif
308
309#ifndef EV_USE_EVENTFD
310# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
311# define EV_USE_EVENTFD EV_FEATURE_OS
182# else 312# else
183# define EV_PID_HASHSIZE 16 313# define EV_USE_EVENTFD 0
184# endif 314# endif
185#endif 315#endif
186 316
187#ifndef EV_INOTIFY_HASHSIZE 317#ifndef EV_USE_SIGNALFD
188# if EV_MINIMAL 318# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
189# define EV_INOTIFY_HASHSIZE 1 319# define EV_USE_SIGNALFD EV_FEATURE_OS
190# else 320# else
191# define EV_INOTIFY_HASHSIZE 16 321# define EV_USE_SIGNALFD 0
192# endif 322# endif
193#endif 323#endif
194 324
195/**/ 325#if 0 /* debugging */
326# define EV_VERIFY 3
327# define EV_USE_4HEAP 1
328# define EV_HEAP_CACHE_AT 1
329#endif
330
331#ifndef EV_VERIFY
332# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
333#endif
334
335#ifndef EV_USE_4HEAP
336# define EV_USE_4HEAP EV_FEATURE_DATA
337#endif
338
339#ifndef EV_HEAP_CACHE_AT
340# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
341#endif
342
343/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
344/* which makes programs even slower. might work on other unices, too. */
345#if EV_USE_CLOCK_SYSCALL
346# include <syscall.h>
347# ifdef SYS_clock_gettime
348# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
349# undef EV_USE_MONOTONIC
350# define EV_USE_MONOTONIC 1
351# else
352# undef EV_USE_CLOCK_SYSCALL
353# define EV_USE_CLOCK_SYSCALL 0
354# endif
355#endif
356
357/* this block fixes any misconfiguration where we know we run into trouble otherwise */
358
359#ifdef _AIX
360/* AIX has a completely broken poll.h header */
361# undef EV_USE_POLL
362# define EV_USE_POLL 0
363#endif
196 364
197#ifndef CLOCK_MONOTONIC 365#ifndef CLOCK_MONOTONIC
198# undef EV_USE_MONOTONIC 366# undef EV_USE_MONOTONIC
199# define EV_USE_MONOTONIC 0 367# define EV_USE_MONOTONIC 0
200#endif 368#endif
… …
207#if !EV_STAT_ENABLE 375#if !EV_STAT_ENABLE
208# undef EV_USE_INOTIFY 376# undef EV_USE_INOTIFY
209# define EV_USE_INOTIFY 0 377# define EV_USE_INOTIFY 0
210#endif 378#endif
211 379
380#if !EV_USE_NANOSLEEP
381# ifndef _WIN32
382# include <sys/select.h>
383# endif
384#endif
385
212#if EV_USE_INOTIFY 386#if EV_USE_INOTIFY
387# include <sys/utsname.h>
388# include <sys/statfs.h>
213# include <sys/inotify.h> 389# include <sys/inotify.h>
390/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
391# ifndef IN_DONT_FOLLOW
392# undef EV_USE_INOTIFY
393# define EV_USE_INOTIFY 0
394# endif
214#endif 395#endif
215 396
216#if EV_SELECT_IS_WINSOCKET 397#if EV_SELECT_IS_WINSOCKET
217# include <winsock.h> 398# include <winsock.h>
218#endif 399#endif
219 400
401#if EV_USE_EVENTFD
402/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
403# include <stdint.h>
404# ifndef EFD_NONBLOCK
405# define EFD_NONBLOCK O_NONBLOCK
406# endif
407# ifndef EFD_CLOEXEC
408# ifdef O_CLOEXEC
409# define EFD_CLOEXEC O_CLOEXEC
410# else
411# define EFD_CLOEXEC 02000000
412# endif
413# endif
414EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
415#endif
416
417#if EV_USE_SIGNALFD
418/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
419# include <stdint.h>
420# ifndef SFD_NONBLOCK
421# define SFD_NONBLOCK O_NONBLOCK
422# endif
423# ifndef SFD_CLOEXEC
424# ifdef O_CLOEXEC
425# define SFD_CLOEXEC O_CLOEXEC
426# else
427# define SFD_CLOEXEC 02000000
428# endif
429# endif
430EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
431
432struct signalfd_siginfo
433{
434 uint32_t ssi_signo;
435 char pad[128 - sizeof (uint32_t)];
436};
437#endif
438
220/**/ 439/**/
440
441#if EV_VERIFY >= 3
442# define EV_FREQUENT_CHECK ev_verify (EV_A)
443#else
444# define EV_FREQUENT_CHECK do { } while (0)
445#endif
221 446
222/* 447/*
223 * This is used to avoid floating point rounding problems. 448 * This is used to avoid floating point rounding problems.
224 * It is added to ev_rt_now when scheduling periodics 449 * It is added to ev_rt_now when scheduling periodics
225 * to ensure progress, time-wise, even when rounding 450 * to ensure progress, time-wise, even when rounding
… …
229 */ 454 */
230#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 455#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
231 456
232#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 457#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
233#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 458#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
234/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */ 459
460#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
461#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
235 462
236#if __GNUC__ >= 4 463#if __GNUC__ >= 4
237# define expect(expr,value) __builtin_expect ((expr),(value)) 464# define expect(expr,value) __builtin_expect ((expr),(value))
238# define noinline __attribute__ ((noinline)) 465# define noinline __attribute__ ((noinline))
239#else 466#else
240# define expect(expr,value) (expr) 467# define expect(expr,value) (expr)
241# define noinline 468# define noinline
242# if __STDC_VERSION__ < 199901L 469# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
243# define inline 470# define inline
244# endif 471# endif
245#endif 472#endif
246 473
247#define expect_false(expr) expect ((expr) != 0, 0) 474#define expect_false(expr) expect ((expr) != 0, 0)
248#define expect_true(expr) expect ((expr) != 0, 1) 475#define expect_true(expr) expect ((expr) != 0, 1)
249#define inline_size static inline 476#define inline_size static inline
250 477
251#if EV_MINIMAL 478#if EV_FEATURE_CODE
479# define inline_speed static inline
480#else
252# define inline_speed static noinline 481# define inline_speed static noinline
482#endif
483
484#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
485
486#if EV_MINPRI == EV_MAXPRI
487# define ABSPRI(w) (((W)w), 0)
253#else 488#else
254# define inline_speed static inline
255#endif
256
257#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
258#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 489# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
490#endif
259 491
260#define EMPTY /* required for microsofts broken pseudo-c compiler */ 492#define EMPTY /* required for microsofts broken pseudo-c compiler */
261#define EMPTY2(a,b) /* used to suppress some warnings */ 493#define EMPTY2(a,b) /* used to suppress some warnings */
262 494
263typedef ev_watcher *W; 495typedef ev_watcher *W;
264typedef ev_watcher_list *WL; 496typedef ev_watcher_list *WL;
265typedef ev_watcher_time *WT; 497typedef ev_watcher_time *WT;
266 498
499#define ev_active(w) ((W)(w))->active
500#define ev_at(w) ((WT)(w))->at
501
502#if EV_USE_REALTIME
503/* sig_atomic_t is used to avoid per-thread variables or locking but still */
504/* giving it a reasonably high chance of working on typical architectures */
505static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
506#endif
507
508#if EV_USE_MONOTONIC
267static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 509static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
510#endif
511
512#ifndef EV_FD_TO_WIN32_HANDLE
513# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
514#endif
515#ifndef EV_WIN32_HANDLE_TO_FD
516# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
517#endif
518#ifndef EV_WIN32_CLOSE_FD
519# define EV_WIN32_CLOSE_FD(fd) close (fd)
520#endif
268 521
269#ifdef _WIN32 522#ifdef _WIN32
270# include "ev_win32.c" 523# include "ev_win32.c"
271#endif 524#endif
272 525
273/*****************************************************************************/ 526/*****************************************************************************/
274 527
528static unsigned int noinline
529ev_linux_version (void)
530{
531#ifdef __linux
532 struct utsname buf;
533 unsigned int v;
534 int i;
535 char *p = buf.release;
536
537 if (uname (&buf))
538 return 0;
539
540 for (i = 3+1; --i; )
541 {
542 unsigned int c = 0;
543
544 for (;;)
545 {
546 if (*p >= '0' && *p <= '9')
547 c = c * 10 + *p++ - '0';
548 else
549 {
550 p += *p == '.';
551 break;
552 }
553 }
554
555 v = (v << 8) | c;
556 }
557
558 return v;
559#else
560 return 0;
561#endif
562}
563
564/*****************************************************************************/
565
566#if EV_AVOID_STDIO
567static void noinline
568ev_printerr (const char *msg)
569{
570 write (STDERR_FILENO, msg, strlen (msg));
571}
572#endif
573
275static void (*syserr_cb)(const char *msg); 574static void (*syserr_cb)(const char *msg);
276 575
277void 576void
278ev_set_syserr_cb (void (*cb)(const char *msg)) 577ev_set_syserr_cb (void (*cb)(const char *msg))
279{ 578{
280 syserr_cb = cb; 579 syserr_cb = cb;
281} 580}
282 581
283static void noinline 582static void noinline
284syserr (const char *msg) 583ev_syserr (const char *msg)
285{ 584{
286 if (!msg) 585 if (!msg)
287 msg = "(libev) system error"; 586 msg = "(libev) system error";
288 587
289 if (syserr_cb) 588 if (syserr_cb)
290 syserr_cb (msg); 589 syserr_cb (msg);
291 else 590 else
292 { 591 {
592#if EV_AVOID_STDIO
593 const char *err = strerror (errno);
594
595 ev_printerr (msg);
596 ev_printerr (": ");
597 ev_printerr (err);
598 ev_printerr ("\n");
599#else
293 perror (msg); 600 perror (msg);
601#endif
294 abort (); 602 abort ();
295 } 603 }
296} 604}
297 605
606static void *
607ev_realloc_emul (void *ptr, long size)
608{
609#if __GLIBC__
610 return realloc (ptr, size);
611#else
612 /* some systems, notably openbsd and darwin, fail to properly
613 * implement realloc (x, 0) (as required by both ansi c-89 and
614 * the single unix specification, so work around them here.
615 */
616
617 if (size)
618 return realloc (ptr, size);
619
620 free (ptr);
621 return 0;
622#endif
623}
624
298static void *(*alloc)(void *ptr, long size); 625static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
299 626
300void 627void
301ev_set_allocator (void *(*cb)(void *ptr, long size)) 628ev_set_allocator (void *(*cb)(void *ptr, long size))
302{ 629{
303 alloc = cb; 630 alloc = cb;
304} 631}
305 632
306inline_speed void * 633inline_speed void *
307ev_realloc (void *ptr, long size) 634ev_realloc (void *ptr, long size)
308{ 635{
309 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); 636 ptr = alloc (ptr, size);
310 637
311 if (!ptr && size) 638 if (!ptr && size)
312 { 639 {
640#if EV_AVOID_STDIO
641 ev_printerr ("libev: memory allocation failed, aborting.\n");
642#else
313 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 643 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
644#endif
314 abort (); 645 abort ();
315 } 646 }
316 647
317 return ptr; 648 return ptr;
318} 649}
… …
320#define ev_malloc(size) ev_realloc (0, (size)) 651#define ev_malloc(size) ev_realloc (0, (size))
321#define ev_free(ptr) ev_realloc ((ptr), 0) 652#define ev_free(ptr) ev_realloc ((ptr), 0)
322 653
323/*****************************************************************************/ 654/*****************************************************************************/
324 655
656/* set in reify when reification needed */
657#define EV_ANFD_REIFY 1
658
659/* file descriptor info structure */
325typedef struct 660typedef struct
326{ 661{
327 WL head; 662 WL head;
328 unsigned char events; 663 unsigned char events; /* the events watched for */
664 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
665 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
329 unsigned char reify; 666 unsigned char unused;
667#if EV_USE_EPOLL
668 unsigned int egen; /* generation counter to counter epoll bugs */
669#endif
330#if EV_SELECT_IS_WINSOCKET 670#if EV_SELECT_IS_WINSOCKET
331 SOCKET handle; 671 SOCKET handle;
332#endif 672#endif
333} ANFD; 673} ANFD;
334 674
675/* stores the pending event set for a given watcher */
335typedef struct 676typedef struct
336{ 677{
337 W w; 678 W w;
338 int events; 679 int events; /* the pending event set for the given watcher */
339} ANPENDING; 680} ANPENDING;
340 681
341#if EV_USE_INOTIFY 682#if EV_USE_INOTIFY
683/* hash table entry per inotify-id */
342typedef struct 684typedef struct
343{ 685{
344 WL head; 686 WL head;
345} ANFS; 687} ANFS;
688#endif
689
690/* Heap Entry */
691#if EV_HEAP_CACHE_AT
692 /* a heap element */
693 typedef struct {
694 ev_tstamp at;
695 WT w;
696 } ANHE;
697
698 #define ANHE_w(he) (he).w /* access watcher, read-write */
699 #define ANHE_at(he) (he).at /* access cached at, read-only */
700 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
701#else
702 /* a heap element */
703 typedef WT ANHE;
704
705 #define ANHE_w(he) (he)
706 #define ANHE_at(he) (he)->at
707 #define ANHE_at_cache(he)
346#endif 708#endif
347 709
348#if EV_MULTIPLICITY 710#if EV_MULTIPLICITY
349 711
350 struct ev_loop 712 struct ev_loop
… …
369 731
370 static int ev_default_loop_ptr; 732 static int ev_default_loop_ptr;
371 733
372#endif 734#endif
373 735
736#if EV_FEATURE_API
737# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
738# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
739# define EV_INVOKE_PENDING invoke_cb (EV_A)
740#else
741# define EV_RELEASE_CB (void)0
742# define EV_ACQUIRE_CB (void)0
743# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
744#endif
745
746#define EVBREAK_RECURSE 0x80
747
374/*****************************************************************************/ 748/*****************************************************************************/
375 749
750#ifndef EV_HAVE_EV_TIME
376ev_tstamp 751ev_tstamp
377ev_time (void) 752ev_time (void)
378{ 753{
379#if EV_USE_REALTIME 754#if EV_USE_REALTIME
755 if (expect_true (have_realtime))
756 {
380 struct timespec ts; 757 struct timespec ts;
381 clock_gettime (CLOCK_REALTIME, &ts); 758 clock_gettime (CLOCK_REALTIME, &ts);
382 return ts.tv_sec + ts.tv_nsec * 1e-9; 759 return ts.tv_sec + ts.tv_nsec * 1e-9;
383#else 760 }
761#endif
762
384 struct timeval tv; 763 struct timeval tv;
385 gettimeofday (&tv, 0); 764 gettimeofday (&tv, 0);
386 return tv.tv_sec + tv.tv_usec * 1e-6; 765 return tv.tv_sec + tv.tv_usec * 1e-6;
387#endif
388} 766}
767#endif
389 768
390ev_tstamp inline_size 769inline_size ev_tstamp
391get_clock (void) 770get_clock (void)
392{ 771{
393#if EV_USE_MONOTONIC 772#if EV_USE_MONOTONIC
394 if (expect_true (have_monotonic)) 773 if (expect_true (have_monotonic))
395 { 774 {
… …
408{ 787{
409 return ev_rt_now; 788 return ev_rt_now;
410} 789}
411#endif 790#endif
412 791
413int inline_size 792void
793ev_sleep (ev_tstamp delay)
794{
795 if (delay > 0.)
796 {
797#if EV_USE_NANOSLEEP
798 struct timespec ts;
799
800 EV_TS_SET (ts, delay);
801 nanosleep (&ts, 0);
802#elif defined(_WIN32)
803 Sleep ((unsigned long)(delay * 1e3));
804#else
805 struct timeval tv;
806
807 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
808 /* something not guaranteed by newer posix versions, but guaranteed */
809 /* by older ones */
810 EV_TV_SET (tv, delay);
811 select (0, 0, 0, 0, &tv);
812#endif
813 }
814}
815
816/*****************************************************************************/
817
818#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
819
820/* find a suitable new size for the given array, */
821/* hopefully by rounding to a nice-to-malloc size */
822inline_size int
414array_nextsize (int elem, int cur, int cnt) 823array_nextsize (int elem, int cur, int cnt)
415{ 824{
416 int ncur = cur + 1; 825 int ncur = cur + 1;
417 826
418 do 827 do
419 ncur <<= 1; 828 ncur <<= 1;
420 while (cnt > ncur); 829 while (cnt > ncur);
421 830
422 /* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */ 831 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */
423 if (elem * ncur > 4096) 832 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
424 { 833 {
425 ncur *= elem; 834 ncur *= elem;
426 ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095; 835 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
427 ncur = ncur - sizeof (void *) * 4; 836 ncur = ncur - sizeof (void *) * 4;
428 ncur /= elem; 837 ncur /= elem;
429 } 838 }
430 839
431 return ncur; 840 return ncur;
… …
435array_realloc (int elem, void *base, int *cur, int cnt) 844array_realloc (int elem, void *base, int *cur, int cnt)
436{ 845{
437 *cur = array_nextsize (elem, *cur, cnt); 846 *cur = array_nextsize (elem, *cur, cnt);
438 return ev_realloc (base, elem * *cur); 847 return ev_realloc (base, elem * *cur);
439} 848}
849
850#define array_init_zero(base,count) \
851 memset ((void *)(base), 0, sizeof (*(base)) * (count))
440 852
441#define array_needsize(type,base,cur,cnt,init) \ 853#define array_needsize(type,base,cur,cnt,init) \
442 if (expect_false ((cnt) > (cur))) \ 854 if (expect_false ((cnt) > (cur))) \
443 { \ 855 { \
444 int ocur_ = (cur); \ 856 int ocur_ = (cur); \
… …
456 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 868 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
457 } 869 }
458#endif 870#endif
459 871
460#define array_free(stem, idx) \ 872#define array_free(stem, idx) \
461 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 873 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
462 874
463/*****************************************************************************/ 875/*****************************************************************************/
876
877/* dummy callback for pending events */
878static void noinline
879pendingcb (EV_P_ ev_prepare *w, int revents)
880{
881}
464 882
465void noinline 883void noinline
466ev_feed_event (EV_P_ void *w, int revents) 884ev_feed_event (EV_P_ void *w, int revents)
467{ 885{
468 W w_ = (W)w; 886 W w_ = (W)w;
… …
477 pendings [pri][w_->pending - 1].w = w_; 895 pendings [pri][w_->pending - 1].w = w_;
478 pendings [pri][w_->pending - 1].events = revents; 896 pendings [pri][w_->pending - 1].events = revents;
479 } 897 }
480} 898}
481 899
482void inline_speed 900inline_speed void
901feed_reverse (EV_P_ W w)
902{
903 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
904 rfeeds [rfeedcnt++] = w;
905}
906
907inline_size void
908feed_reverse_done (EV_P_ int revents)
909{
910 do
911 ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
912 while (rfeedcnt);
913}
914
915inline_speed void
483queue_events (EV_P_ W *events, int eventcnt, int type) 916queue_events (EV_P_ W *events, int eventcnt, int type)
484{ 917{
485 int i; 918 int i;
486 919
487 for (i = 0; i < eventcnt; ++i) 920 for (i = 0; i < eventcnt; ++i)
488 ev_feed_event (EV_A_ events [i], type); 921 ev_feed_event (EV_A_ events [i], type);
489} 922}
490 923
491/*****************************************************************************/ 924/*****************************************************************************/
492 925
493void inline_size 926inline_speed void
494anfds_init (ANFD *base, int count)
495{
496 while (count--)
497 {
498 base->head = 0;
499 base->events = EV_NONE;
500 base->reify = 0;
501
502 ++base;
503 }
504}
505
506void inline_speed
507fd_event (EV_P_ int fd, int revents) 927fd_event_nocheck (EV_P_ int fd, int revents)
508{ 928{
509 ANFD *anfd = anfds + fd; 929 ANFD *anfd = anfds + fd;
510 ev_io *w; 930 ev_io *w;
511 931
512 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 932 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
516 if (ev) 936 if (ev)
517 ev_feed_event (EV_A_ (W)w, ev); 937 ev_feed_event (EV_A_ (W)w, ev);
518 } 938 }
519} 939}
520 940
941/* do not submit kernel events for fds that have reify set */
942/* because that means they changed while we were polling for new events */
943inline_speed void
944fd_event (EV_P_ int fd, int revents)
945{
946 ANFD *anfd = anfds + fd;
947
948 if (expect_true (!anfd->reify))
949 fd_event_nocheck (EV_A_ fd, revents);
950}
951
521void 952void
522ev_feed_fd_event (EV_P_ int fd, int revents) 953ev_feed_fd_event (EV_P_ int fd, int revents)
523{ 954{
524 if (fd >= 0 && fd < anfdmax) 955 if (fd >= 0 && fd < anfdmax)
525 fd_event (EV_A_ fd, revents); 956 fd_event_nocheck (EV_A_ fd, revents);
526} 957}
527 958
528void inline_size 959/* make sure the external fd watch events are in-sync */
960/* with the kernel/libev internal state */
961inline_size void
529fd_reify (EV_P) 962fd_reify (EV_P)
530{ 963{
531 int i; 964 int i;
532 965
533 for (i = 0; i < fdchangecnt; ++i) 966 for (i = 0; i < fdchangecnt; ++i)
534 { 967 {
535 int fd = fdchanges [i]; 968 int fd = fdchanges [i];
536 ANFD *anfd = anfds + fd; 969 ANFD *anfd = anfds + fd;
537 ev_io *w; 970 ev_io *w;
538 971
539 unsigned char events = 0; 972 unsigned char o_events = anfd->events;
973 unsigned char o_reify = anfd->reify;
540 974
541 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 975 anfd->reify = 0;
542 events |= (unsigned char)w->events;
543 976
544#if EV_SELECT_IS_WINSOCKET 977#if EV_SELECT_IS_WINSOCKET
545 if (events) 978 if (o_reify & EV__IOFDSET)
546 { 979 {
547 unsigned long argp; 980 unsigned long arg;
548 anfd->handle = _get_osfhandle (fd); 981 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
549 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); 982 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
550 } 983 }
551#endif 984#endif
552 985
986 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
553 { 987 {
554 unsigned char o_events = anfd->events;
555 unsigned char o_reify = anfd->reify;
556
557 anfd->reify = 0;
558 anfd->events = events; 988 anfd->events = 0;
559 989
560 if (o_events != events || o_reify & EV_IOFDSET) 990 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
991 anfd->events |= (unsigned char)w->events;
992
993 if (o_events != anfd->events)
994 o_reify = EV__IOFDSET; /* actually |= */
995 }
996
997 if (o_reify & EV__IOFDSET)
561 backend_modify (EV_A_ fd, o_events, events); 998 backend_modify (EV_A_ fd, o_events, anfd->events);
562 }
563 } 999 }
564 1000
565 fdchangecnt = 0; 1001 fdchangecnt = 0;
566} 1002}
567 1003
568void inline_size 1004/* something about the given fd changed */
1005inline_size void
569fd_change (EV_P_ int fd, int flags) 1006fd_change (EV_P_ int fd, int flags)
570{ 1007{
571 unsigned char reify = anfds [fd].reify; 1008 unsigned char reify = anfds [fd].reify;
572 anfds [fd].reify |= flags; 1009 anfds [fd].reify |= flags;
573 1010
… …
577 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 1014 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
578 fdchanges [fdchangecnt - 1] = fd; 1015 fdchanges [fdchangecnt - 1] = fd;
579 } 1016 }
580} 1017}
581 1018
582void inline_speed 1019/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1020inline_speed void
583fd_kill (EV_P_ int fd) 1021fd_kill (EV_P_ int fd)
584{ 1022{
585 ev_io *w; 1023 ev_io *w;
586 1024
587 while ((w = (ev_io *)anfds [fd].head)) 1025 while ((w = (ev_io *)anfds [fd].head))
… …
589 ev_io_stop (EV_A_ w); 1027 ev_io_stop (EV_A_ w);
590 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1028 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
591 } 1029 }
592} 1030}
593 1031
594int inline_size 1032/* check whether the given fd is actually valid, for error recovery */
1033inline_size int
595fd_valid (int fd) 1034fd_valid (int fd)
596{ 1035{
597#ifdef _WIN32 1036#ifdef _WIN32
598 return _get_osfhandle (fd) != -1; 1037 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
599#else 1038#else
600 return fcntl (fd, F_GETFD) != -1; 1039 return fcntl (fd, F_GETFD) != -1;
601#endif 1040#endif
602} 1041}
603 1042
… …
607{ 1046{
608 int fd; 1047 int fd;
609 1048
610 for (fd = 0; fd < anfdmax; ++fd) 1049 for (fd = 0; fd < anfdmax; ++fd)
611 if (anfds [fd].events) 1050 if (anfds [fd].events)
612 if (!fd_valid (fd) == -1 && errno == EBADF) 1051 if (!fd_valid (fd) && errno == EBADF)
613 fd_kill (EV_A_ fd); 1052 fd_kill (EV_A_ fd);
614} 1053}
615 1054
616/* called on ENOMEM in select/poll to kill some fds and retry */ 1055/* called on ENOMEM in select/poll to kill some fds and retry */
617static void noinline 1056static void noinline
… …
621 1060
622 for (fd = anfdmax; fd--; ) 1061 for (fd = anfdmax; fd--; )
623 if (anfds [fd].events) 1062 if (anfds [fd].events)
624 { 1063 {
625 fd_kill (EV_A_ fd); 1064 fd_kill (EV_A_ fd);
626 return; 1065 break;
627 } 1066 }
628} 1067}
629 1068
630/* usually called after fork if backend needs to re-arm all fds from scratch */ 1069/* usually called after fork if backend needs to re-arm all fds from scratch */
631static void noinline 1070static void noinline
… …
635 1074
636 for (fd = 0; fd < anfdmax; ++fd) 1075 for (fd = 0; fd < anfdmax; ++fd)
637 if (anfds [fd].events) 1076 if (anfds [fd].events)
638 { 1077 {
639 anfds [fd].events = 0; 1078 anfds [fd].events = 0;
1079 anfds [fd].emask = 0;
640 fd_change (EV_A_ fd, EV_IOFDSET | 1); 1080 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
641 } 1081 }
642} 1082}
643 1083
644/*****************************************************************************/ 1084/* used to prepare libev internal fd's */
645 1085/* this is not fork-safe */
646void inline_speed 1086inline_speed void
647upheap (WT *heap, int k)
648{
649 WT w = heap [k];
650
651 while (k)
652 {
653 int p = (k - 1) >> 1;
654
655 if (heap [p]->at <= w->at)
656 break;
657
658 heap [k] = heap [p];
659 ((W)heap [k])->active = k + 1;
660 k = p;
661 }
662
663 heap [k] = w;
664 ((W)heap [k])->active = k + 1;
665}
666
667void inline_speed
668downheap (WT *heap, int N, int k)
669{
670 WT w = heap [k];
671
672 for (;;)
673 {
674 int c = (k << 1) + 1;
675
676 if (c >= N)
677 break;
678
679 c += c + 1 < N && heap [c]->at > heap [c + 1]->at
680 ? 1 : 0;
681
682 if (w->at <= heap [c]->at)
683 break;
684
685 heap [k] = heap [c];
686 ((W)heap [k])->active = k + 1;
687
688 k = c;
689 }
690
691 heap [k] = w;
692 ((W)heap [k])->active = k + 1;
693}
694
695void inline_size
696adjustheap (WT *heap, int N, int k)
697{
698 upheap (heap, k);
699 downheap (heap, N, k);
700}
701
702/*****************************************************************************/
703
704typedef struct
705{
706 WL head;
707 sig_atomic_t volatile gotsig;
708} ANSIG;
709
710static ANSIG *signals;
711static int signalmax;
712
713static int sigpipe [2];
714static sig_atomic_t volatile gotsig;
715static ev_io sigev;
716
717void inline_size
718signals_init (ANSIG *base, int count)
719{
720 while (count--)
721 {
722 base->head = 0;
723 base->gotsig = 0;
724
725 ++base;
726 }
727}
728
729static void
730sighandler (int signum)
731{
732#if _WIN32
733 signal (signum, sighandler);
734#endif
735
736 signals [signum - 1].gotsig = 1;
737
738 if (!gotsig)
739 {
740 int old_errno = errno;
741 gotsig = 1;
742 write (sigpipe [1], &signum, 1);
743 errno = old_errno;
744 }
745}
746
747void noinline
748ev_feed_signal_event (EV_P_ int signum)
749{
750 WL w;
751
752#if EV_MULTIPLICITY
753 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
754#endif
755
756 --signum;
757
758 if (signum < 0 || signum >= signalmax)
759 return;
760
761 signals [signum].gotsig = 0;
762
763 for (w = signals [signum].head; w; w = w->next)
764 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
765}
766
767static void
768sigcb (EV_P_ ev_io *iow, int revents)
769{
770 int signum;
771
772 read (sigpipe [0], &revents, 1);
773 gotsig = 0;
774
775 for (signum = signalmax; signum--; )
776 if (signals [signum].gotsig)
777 ev_feed_signal_event (EV_A_ signum + 1);
778}
779
780void inline_speed
781fd_intern (int fd) 1087fd_intern (int fd)
782{ 1088{
783#ifdef _WIN32 1089#ifdef _WIN32
784 int arg = 1; 1090 unsigned long arg = 1;
785 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 1091 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
786#else 1092#else
787 fcntl (fd, F_SETFD, FD_CLOEXEC); 1093 fcntl (fd, F_SETFD, FD_CLOEXEC);
788 fcntl (fd, F_SETFL, O_NONBLOCK); 1094 fcntl (fd, F_SETFL, O_NONBLOCK);
789#endif 1095#endif
790} 1096}
791 1097
1098/*****************************************************************************/
1099
1100/*
1101 * the heap functions want a real array index. array index 0 is guaranteed to not
1102 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
1103 * the branching factor of the d-tree.
1104 */
1105
1106/*
1107 * at the moment we allow libev the luxury of two heaps,
1108 * a small-code-size 2-heap one and a ~1.5kb larger 4-heap
1109 * which is more cache-efficient.
1110 * the difference is about 5% with 50000+ watchers.
1111 */
1112#if EV_USE_4HEAP
1113
1114#define DHEAP 4
1115#define HEAP0 (DHEAP - 1) /* index of first element in heap */
1116#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
1117#define UPHEAP_DONE(p,k) ((p) == (k))
1118
1119/* away from the root */
1120inline_speed void
1121downheap (ANHE *heap, int N, int k)
1122{
1123 ANHE he = heap [k];
1124 ANHE *E = heap + N + HEAP0;
1125
1126 for (;;)
1127 {
1128 ev_tstamp minat;
1129 ANHE *minpos;
1130 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
1131
1132 /* find minimum child */
1133 if (expect_true (pos + DHEAP - 1 < E))
1134 {
1135 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1136 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1137 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1138 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1139 }
1140 else if (pos < E)
1141 {
1142 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1143 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1144 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1145 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1146 }
1147 else
1148 break;
1149
1150 if (ANHE_at (he) <= minat)
1151 break;
1152
1153 heap [k] = *minpos;
1154 ev_active (ANHE_w (*minpos)) = k;
1155
1156 k = minpos - heap;
1157 }
1158
1159 heap [k] = he;
1160 ev_active (ANHE_w (he)) = k;
1161}
1162
1163#else /* 4HEAP */
1164
1165#define HEAP0 1
1166#define HPARENT(k) ((k) >> 1)
1167#define UPHEAP_DONE(p,k) (!(p))
1168
1169/* away from the root */
1170inline_speed void
1171downheap (ANHE *heap, int N, int k)
1172{
1173 ANHE he = heap [k];
1174
1175 for (;;)
1176 {
1177 int c = k << 1;
1178
1179 if (c >= N + HEAP0)
1180 break;
1181
1182 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
1183 ? 1 : 0;
1184
1185 if (ANHE_at (he) <= ANHE_at (heap [c]))
1186 break;
1187
1188 heap [k] = heap [c];
1189 ev_active (ANHE_w (heap [k])) = k;
1190
1191 k = c;
1192 }
1193
1194 heap [k] = he;
1195 ev_active (ANHE_w (he)) = k;
1196}
1197#endif
1198
1199/* towards the root */
1200inline_speed void
1201upheap (ANHE *heap, int k)
1202{
1203 ANHE he = heap [k];
1204
1205 for (;;)
1206 {
1207 int p = HPARENT (k);
1208
1209 if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
1210 break;
1211
1212 heap [k] = heap [p];
1213 ev_active (ANHE_w (heap [k])) = k;
1214 k = p;
1215 }
1216
1217 heap [k] = he;
1218 ev_active (ANHE_w (he)) = k;
1219}
1220
1221/* move an element suitably so it is in a correct place */
1222inline_size void
1223adjustheap (ANHE *heap, int N, int k)
1224{
1225 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1226 upheap (heap, k);
1227 else
1228 downheap (heap, N, k);
1229}
1230
1231/* rebuild the heap: this function is used only once and executed rarely */
1232inline_size void
1233reheap (ANHE *heap, int N)
1234{
1235 int i;
1236
1237 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
1238 /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
1239 for (i = 0; i < N; ++i)
1240 upheap (heap, i + HEAP0);
1241}
1242
1243/*****************************************************************************/
1244
1245/* associate signal watchers to a signal signal */
1246typedef struct
1247{
1248 EV_ATOMIC_T pending;
1249#if EV_MULTIPLICITY
1250 EV_P;
1251#endif
1252 WL head;
1253} ANSIG;
1254
1255static ANSIG signals [EV_NSIG - 1];
1256
1257/*****************************************************************************/
1258
1259#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1260
792static void noinline 1261static void noinline
793siginit (EV_P) 1262evpipe_init (EV_P)
794{ 1263{
1264 if (!ev_is_active (&pipe_w))
1265 {
1266# if EV_USE_EVENTFD
1267 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1268 if (evfd < 0 && errno == EINVAL)
1269 evfd = eventfd (0, 0);
1270
1271 if (evfd >= 0)
1272 {
1273 evpipe [0] = -1;
1274 fd_intern (evfd); /* doing it twice doesn't hurt */
1275 ev_io_set (&pipe_w, evfd, EV_READ);
1276 }
1277 else
1278# endif
1279 {
1280 while (pipe (evpipe))
1281 ev_syserr ("(libev) error creating signal/async pipe");
1282
795 fd_intern (sigpipe [0]); 1283 fd_intern (evpipe [0]);
796 fd_intern (sigpipe [1]); 1284 fd_intern (evpipe [1]);
1285 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1286 }
797 1287
798 ev_io_set (&sigev, sigpipe [0], EV_READ);
799 ev_io_start (EV_A_ &sigev); 1288 ev_io_start (EV_A_ &pipe_w);
800 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1289 ev_unref (EV_A); /* watcher should not keep loop alive */
1290 }
1291}
1292
1293inline_size void
1294evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1295{
1296 if (!*flag)
1297 {
1298 int old_errno = errno; /* save errno because write might clobber it */
1299 char dummy;
1300
1301 *flag = 1;
1302
1303#if EV_USE_EVENTFD
1304 if (evfd >= 0)
1305 {
1306 uint64_t counter = 1;
1307 write (evfd, &counter, sizeof (uint64_t));
1308 }
1309 else
1310#endif
1311 /* win32 people keep sending patches that change this write() to send() */
1312 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1313 /* so when you think this write should be a send instead, please find out */
1314 /* where your send() is from - it's definitely not the microsoft send, and */
1315 /* tell me. thank you. */
1316 write (evpipe [1], &dummy, 1);
1317
1318 errno = old_errno;
1319 }
1320}
1321
1322/* called whenever the libev signal pipe */
1323/* got some events (signal, async) */
1324static void
1325pipecb (EV_P_ ev_io *iow, int revents)
1326{
1327 int i;
1328
1329#if EV_USE_EVENTFD
1330 if (evfd >= 0)
1331 {
1332 uint64_t counter;
1333 read (evfd, &counter, sizeof (uint64_t));
1334 }
1335 else
1336#endif
1337 {
1338 char dummy;
1339 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1340 read (evpipe [0], &dummy, 1);
1341 }
1342
1343 if (sig_pending)
1344 {
1345 sig_pending = 0;
1346
1347 for (i = EV_NSIG - 1; i--; )
1348 if (expect_false (signals [i].pending))
1349 ev_feed_signal_event (EV_A_ i + 1);
1350 }
1351
1352#if EV_ASYNC_ENABLE
1353 if (async_pending)
1354 {
1355 async_pending = 0;
1356
1357 for (i = asynccnt; i--; )
1358 if (asyncs [i]->sent)
1359 {
1360 asyncs [i]->sent = 0;
1361 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1362 }
1363 }
1364#endif
801} 1365}
802 1366
803/*****************************************************************************/ 1367/*****************************************************************************/
804 1368
1369static void
1370ev_sighandler (int signum)
1371{
1372#if EV_MULTIPLICITY
1373 EV_P = signals [signum - 1].loop;
1374#endif
1375
1376#ifdef _WIN32
1377 signal (signum, ev_sighandler);
1378#endif
1379
1380 signals [signum - 1].pending = 1;
1381 evpipe_write (EV_A_ &sig_pending);
1382}
1383
1384void noinline
1385ev_feed_signal_event (EV_P_ int signum)
1386{
1387 WL w;
1388
1389 if (expect_false (signum <= 0 || signum > EV_NSIG))
1390 return;
1391
1392 --signum;
1393
1394#if EV_MULTIPLICITY
1395 /* it is permissible to try to feed a signal to the wrong loop */
1396 /* or, likely more useful, feeding a signal nobody is waiting for */
1397
1398 if (expect_false (signals [signum].loop != EV_A))
1399 return;
1400#endif
1401
1402 signals [signum].pending = 0;
1403
1404 for (w = signals [signum].head; w; w = w->next)
1405 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1406}
1407
1408#if EV_USE_SIGNALFD
1409static void
1410sigfdcb (EV_P_ ev_io *iow, int revents)
1411{
1412 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1413
1414 for (;;)
1415 {
1416 ssize_t res = read (sigfd, si, sizeof (si));
1417
1418 /* not ISO-C, as res might be -1, but works with SuS */
1419 for (sip = si; (char *)sip < (char *)si + res; ++sip)
1420 ev_feed_signal_event (EV_A_ sip->ssi_signo);
1421
1422 if (res < (ssize_t)sizeof (si))
1423 break;
1424 }
1425}
1426#endif
1427
1428#endif
1429
1430/*****************************************************************************/
1431
1432#if EV_CHILD_ENABLE
805static WL childs [EV_PID_HASHSIZE]; 1433static WL childs [EV_PID_HASHSIZE];
806 1434
807#ifndef _WIN32
808
809static ev_signal childev; 1435static ev_signal childev;
810 1436
811void inline_speed 1437#ifndef WIFCONTINUED
1438# define WIFCONTINUED(status) 0
1439#endif
1440
1441/* handle a single child status event */
1442inline_speed void
812child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status) 1443child_reap (EV_P_ int chain, int pid, int status)
813{ 1444{
814 ev_child *w; 1445 ev_child *w;
1446 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
815 1447
816 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1448 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1449 {
817 if (w->pid == pid || !w->pid) 1450 if ((w->pid == pid || !w->pid)
1451 && (!traced || (w->flags & 1)))
818 { 1452 {
819 ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */ 1453 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
820 w->rpid = pid; 1454 w->rpid = pid;
821 w->rstatus = status; 1455 w->rstatus = status;
822 ev_feed_event (EV_A_ (W)w, EV_CHILD); 1456 ev_feed_event (EV_A_ (W)w, EV_CHILD);
823 } 1457 }
1458 }
824} 1459}
825 1460
826#ifndef WCONTINUED 1461#ifndef WCONTINUED
827# define WCONTINUED 0 1462# define WCONTINUED 0
828#endif 1463#endif
829 1464
1465/* called on sigchld etc., calls waitpid */
830static void 1466static void
831childcb (EV_P_ ev_signal *sw, int revents) 1467childcb (EV_P_ ev_signal *sw, int revents)
832{ 1468{
833 int pid, status; 1469 int pid, status;
834 1470
… …
837 if (!WCONTINUED 1473 if (!WCONTINUED
838 || errno != EINVAL 1474 || errno != EINVAL
839 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED))) 1475 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
840 return; 1476 return;
841 1477
842 /* make sure we are called again until all childs have been reaped */ 1478 /* make sure we are called again until all children have been reaped */
843 /* we need to do it this way so that the callback gets called before we continue */ 1479 /* we need to do it this way so that the callback gets called before we continue */
844 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1480 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
845 1481
846 child_reap (EV_A_ sw, pid, pid, status); 1482 child_reap (EV_A_ pid, pid, status);
847 if (EV_PID_HASHSIZE > 1) 1483 if ((EV_PID_HASHSIZE) > 1)
848 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1484 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
849} 1485}
850 1486
851#endif 1487#endif
852 1488
853/*****************************************************************************/ 1489/*****************************************************************************/
… …
915 /* kqueue is borked on everything but netbsd apparently */ 1551 /* kqueue is borked on everything but netbsd apparently */
916 /* it usually doesn't work correctly on anything but sockets and pipes */ 1552 /* it usually doesn't work correctly on anything but sockets and pipes */
917 flags &= ~EVBACKEND_KQUEUE; 1553 flags &= ~EVBACKEND_KQUEUE;
918#endif 1554#endif
919#ifdef __APPLE__ 1555#ifdef __APPLE__
920 // flags &= ~EVBACKEND_KQUEUE; for documentation 1556 /* only select works correctly on that "unix-certified" platform */
921 flags &= ~EVBACKEND_POLL; 1557 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1558 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1559#endif
1560#ifdef __FreeBSD__
1561 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
922#endif 1562#endif
923 1563
924 return flags; 1564 return flags;
925} 1565}
926 1566
927unsigned int 1567unsigned int
928ev_embeddable_backends (void) 1568ev_embeddable_backends (void)
929{ 1569{
930 return EVBACKEND_EPOLL 1570 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
931 | EVBACKEND_KQUEUE 1571
932 | EVBACKEND_PORT; 1572 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1573 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1574 flags &= ~EVBACKEND_EPOLL;
1575
1576 return flags;
933} 1577}
934 1578
935unsigned int 1579unsigned int
936ev_backend (EV_P) 1580ev_backend (EV_P)
937{ 1581{
938 return backend; 1582 return backend;
939} 1583}
940 1584
1585#if EV_FEATURE_API
941unsigned int 1586unsigned int
942ev_loop_count (EV_P) 1587ev_iteration (EV_P)
943{ 1588{
944 return loop_count; 1589 return loop_count;
945} 1590}
946 1591
1592unsigned int
1593ev_depth (EV_P)
1594{
1595 return loop_depth;
1596}
1597
1598void
1599ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1600{
1601 io_blocktime = interval;
1602}
1603
1604void
1605ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1606{
1607 timeout_blocktime = interval;
1608}
1609
1610void
1611ev_set_userdata (EV_P_ void *data)
1612{
1613 userdata = data;
1614}
1615
1616void *
1617ev_userdata (EV_P)
1618{
1619 return userdata;
1620}
1621
1622void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1623{
1624 invoke_cb = invoke_pending_cb;
1625}
1626
1627void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1628{
1629 release_cb = release;
1630 acquire_cb = acquire;
1631}
1632#endif
1633
1634/* initialise a loop structure, must be zero-initialised */
947static void noinline 1635static void noinline
948loop_init (EV_P_ unsigned int flags) 1636loop_init (EV_P_ unsigned int flags)
949{ 1637{
950 if (!backend) 1638 if (!backend)
951 { 1639 {
1640#if EV_USE_REALTIME
1641 if (!have_realtime)
1642 {
1643 struct timespec ts;
1644
1645 if (!clock_gettime (CLOCK_REALTIME, &ts))
1646 have_realtime = 1;
1647 }
1648#endif
1649
952#if EV_USE_MONOTONIC 1650#if EV_USE_MONOTONIC
1651 if (!have_monotonic)
953 { 1652 {
954 struct timespec ts; 1653 struct timespec ts;
1654
955 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1655 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
956 have_monotonic = 1; 1656 have_monotonic = 1;
957 } 1657 }
958#endif 1658#endif
959
960 ev_rt_now = ev_time ();
961 mn_now = get_clock ();
962 now_floor = mn_now;
963 rtmn_diff = ev_rt_now - mn_now;
964 1659
965 /* pid check not overridable via env */ 1660 /* pid check not overridable via env */
966#ifndef _WIN32 1661#ifndef _WIN32
967 if (flags & EVFLAG_FORKCHECK) 1662 if (flags & EVFLAG_FORKCHECK)
968 curpid = getpid (); 1663 curpid = getpid ();
… …
971 if (!(flags & EVFLAG_NOENV) 1666 if (!(flags & EVFLAG_NOENV)
972 && !enable_secure () 1667 && !enable_secure ()
973 && getenv ("LIBEV_FLAGS")) 1668 && getenv ("LIBEV_FLAGS"))
974 flags = atoi (getenv ("LIBEV_FLAGS")); 1669 flags = atoi (getenv ("LIBEV_FLAGS"));
975 1670
1671 ev_rt_now = ev_time ();
1672 mn_now = get_clock ();
1673 now_floor = mn_now;
1674 rtmn_diff = ev_rt_now - mn_now;
1675#if EV_FEATURE_API
1676 invoke_cb = ev_invoke_pending;
1677#endif
1678
1679 io_blocktime = 0.;
1680 timeout_blocktime = 0.;
1681 backend = 0;
1682 backend_fd = -1;
1683 sig_pending = 0;
1684#if EV_ASYNC_ENABLE
1685 async_pending = 0;
1686#endif
1687#if EV_USE_INOTIFY
1688 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1689#endif
1690#if EV_USE_SIGNALFD
1691 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1692#endif
1693
976 if (!(flags & 0x0000ffffUL)) 1694 if (!(flags & 0x0000ffffU))
977 flags |= ev_recommended_backends (); 1695 flags |= ev_recommended_backends ();
978
979 backend = 0;
980 backend_fd = -1;
981#if EV_USE_INOTIFY
982 fs_fd = -2;
983#endif
984 1696
985#if EV_USE_PORT 1697#if EV_USE_PORT
986 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1698 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
987#endif 1699#endif
988#if EV_USE_KQUEUE 1700#if EV_USE_KQUEUE
… …
996#endif 1708#endif
997#if EV_USE_SELECT 1709#if EV_USE_SELECT
998 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1710 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
999#endif 1711#endif
1000 1712
1713 ev_prepare_init (&pending_w, pendingcb);
1714
1715#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1001 ev_init (&sigev, sigcb); 1716 ev_init (&pipe_w, pipecb);
1002 ev_set_priority (&sigev, EV_MAXPRI); 1717 ev_set_priority (&pipe_w, EV_MAXPRI);
1718#endif
1003 } 1719 }
1004} 1720}
1005 1721
1722/* free up a loop structure */
1006static void noinline 1723static void noinline
1007loop_destroy (EV_P) 1724loop_destroy (EV_P)
1008{ 1725{
1009 int i; 1726 int i;
1727
1728 if (ev_is_active (&pipe_w))
1729 {
1730 /*ev_ref (EV_A);*/
1731 /*ev_io_stop (EV_A_ &pipe_w);*/
1732
1733#if EV_USE_EVENTFD
1734 if (evfd >= 0)
1735 close (evfd);
1736#endif
1737
1738 if (evpipe [0] >= 0)
1739 {
1740 EV_WIN32_CLOSE_FD (evpipe [0]);
1741 EV_WIN32_CLOSE_FD (evpipe [1]);
1742 }
1743 }
1744
1745#if EV_USE_SIGNALFD
1746 if (ev_is_active (&sigfd_w))
1747 close (sigfd);
1748#endif
1010 1749
1011#if EV_USE_INOTIFY 1750#if EV_USE_INOTIFY
1012 if (fs_fd >= 0) 1751 if (fs_fd >= 0)
1013 close (fs_fd); 1752 close (fs_fd);
1014#endif 1753#endif
… …
1038#if EV_IDLE_ENABLE 1777#if EV_IDLE_ENABLE
1039 array_free (idle, [i]); 1778 array_free (idle, [i]);
1040#endif 1779#endif
1041 } 1780 }
1042 1781
1043 ev_free (anfds); anfdmax = 0; 1782 ev_free (anfds); anfds = 0; anfdmax = 0;
1044 1783
1045 /* have to use the microsoft-never-gets-it-right macro */ 1784 /* have to use the microsoft-never-gets-it-right macro */
1785 array_free (rfeed, EMPTY);
1046 array_free (fdchange, EMPTY); 1786 array_free (fdchange, EMPTY);
1047 array_free (timer, EMPTY); 1787 array_free (timer, EMPTY);
1048#if EV_PERIODIC_ENABLE 1788#if EV_PERIODIC_ENABLE
1049 array_free (periodic, EMPTY); 1789 array_free (periodic, EMPTY);
1050#endif 1790#endif
1051#if EV_FORK_ENABLE 1791#if EV_FORK_ENABLE
1052 array_free (fork, EMPTY); 1792 array_free (fork, EMPTY);
1053#endif 1793#endif
1054 array_free (prepare, EMPTY); 1794 array_free (prepare, EMPTY);
1055 array_free (check, EMPTY); 1795 array_free (check, EMPTY);
1796#if EV_ASYNC_ENABLE
1797 array_free (async, EMPTY);
1798#endif
1056 1799
1057 backend = 0; 1800 backend = 0;
1058} 1801}
1059 1802
1803#if EV_USE_INOTIFY
1060void inline_size infy_fork (EV_P); 1804inline_size void infy_fork (EV_P);
1805#endif
1061 1806
1062void inline_size 1807inline_size void
1063loop_fork (EV_P) 1808loop_fork (EV_P)
1064{ 1809{
1065#if EV_USE_PORT 1810#if EV_USE_PORT
1066 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1811 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1067#endif 1812#endif
… …
1073#endif 1818#endif
1074#if EV_USE_INOTIFY 1819#if EV_USE_INOTIFY
1075 infy_fork (EV_A); 1820 infy_fork (EV_A);
1076#endif 1821#endif
1077 1822
1078 if (ev_is_active (&sigev)) 1823 if (ev_is_active (&pipe_w))
1079 { 1824 {
1080 /* default loop */ 1825 /* this "locks" the handlers against writing to the pipe */
1826 /* while we modify the fd vars */
1827 sig_pending = 1;
1828#if EV_ASYNC_ENABLE
1829 async_pending = 1;
1830#endif
1081 1831
1082 ev_ref (EV_A); 1832 ev_ref (EV_A);
1083 ev_io_stop (EV_A_ &sigev); 1833 ev_io_stop (EV_A_ &pipe_w);
1084 close (sigpipe [0]);
1085 close (sigpipe [1]);
1086 1834
1087 while (pipe (sigpipe)) 1835#if EV_USE_EVENTFD
1088 syserr ("(libev) error creating pipe"); 1836 if (evfd >= 0)
1837 close (evfd);
1838#endif
1089 1839
1840 if (evpipe [0] >= 0)
1841 {
1842 EV_WIN32_CLOSE_FD (evpipe [0]);
1843 EV_WIN32_CLOSE_FD (evpipe [1]);
1844 }
1845
1846#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1090 siginit (EV_A); 1847 evpipe_init (EV_A);
1848 /* now iterate over everything, in case we missed something */
1849 pipecb (EV_A_ &pipe_w, EV_READ);
1850#endif
1091 } 1851 }
1092 1852
1093 postfork = 0; 1853 postfork = 0;
1094} 1854}
1095 1855
1096#if EV_MULTIPLICITY 1856#if EV_MULTIPLICITY
1857
1097struct ev_loop * 1858struct ev_loop *
1098ev_loop_new (unsigned int flags) 1859ev_loop_new (unsigned int flags)
1099{ 1860{
1100 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1861 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1101 1862
1102 memset (loop, 0, sizeof (struct ev_loop)); 1863 memset (EV_A, 0, sizeof (struct ev_loop));
1103
1104 loop_init (EV_A_ flags); 1864 loop_init (EV_A_ flags);
1105 1865
1106 if (ev_backend (EV_A)) 1866 if (ev_backend (EV_A))
1107 return loop; 1867 return EV_A;
1108 1868
1109 return 0; 1869 return 0;
1110} 1870}
1111 1871
1112void 1872void
… …
1117} 1877}
1118 1878
1119void 1879void
1120ev_loop_fork (EV_P) 1880ev_loop_fork (EV_P)
1121{ 1881{
1122 postfork = 1; 1882 postfork = 1; /* must be in line with ev_default_fork */
1123} 1883}
1884#endif /* multiplicity */
1124 1885
1886#if EV_VERIFY
1887static void noinline
1888verify_watcher (EV_P_ W w)
1889{
1890 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1891
1892 if (w->pending)
1893 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1894}
1895
1896static void noinline
1897verify_heap (EV_P_ ANHE *heap, int N)
1898{
1899 int i;
1900
1901 for (i = HEAP0; i < N + HEAP0; ++i)
1902 {
1903 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1904 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1905 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1906
1907 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1908 }
1909}
1910
1911static void noinline
1912array_verify (EV_P_ W *ws, int cnt)
1913{
1914 while (cnt--)
1915 {
1916 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1917 verify_watcher (EV_A_ ws [cnt]);
1918 }
1919}
1920#endif
1921
1922#if EV_FEATURE_API
1923void
1924ev_verify (EV_P)
1925{
1926#if EV_VERIFY
1927 int i;
1928 WL w;
1929
1930 assert (activecnt >= -1);
1931
1932 assert (fdchangemax >= fdchangecnt);
1933 for (i = 0; i < fdchangecnt; ++i)
1934 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1935
1936 assert (anfdmax >= 0);
1937 for (i = 0; i < anfdmax; ++i)
1938 for (w = anfds [i].head; w; w = w->next)
1939 {
1940 verify_watcher (EV_A_ (W)w);
1941 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1942 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1943 }
1944
1945 assert (timermax >= timercnt);
1946 verify_heap (EV_A_ timers, timercnt);
1947
1948#if EV_PERIODIC_ENABLE
1949 assert (periodicmax >= periodiccnt);
1950 verify_heap (EV_A_ periodics, periodiccnt);
1951#endif
1952
1953 for (i = NUMPRI; i--; )
1954 {
1955 assert (pendingmax [i] >= pendingcnt [i]);
1956#if EV_IDLE_ENABLE
1957 assert (idleall >= 0);
1958 assert (idlemax [i] >= idlecnt [i]);
1959 array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
1960#endif
1961 }
1962
1963#if EV_FORK_ENABLE
1964 assert (forkmax >= forkcnt);
1965 array_verify (EV_A_ (W *)forks, forkcnt);
1966#endif
1967
1968#if EV_ASYNC_ENABLE
1969 assert (asyncmax >= asynccnt);
1970 array_verify (EV_A_ (W *)asyncs, asynccnt);
1971#endif
1972
1973#if EV_PREPARE_ENABLE
1974 assert (preparemax >= preparecnt);
1975 array_verify (EV_A_ (W *)prepares, preparecnt);
1976#endif
1977
1978#if EV_CHECK_ENABLE
1979 assert (checkmax >= checkcnt);
1980 array_verify (EV_A_ (W *)checks, checkcnt);
1981#endif
1982
1983# if 0
1984#if EV_CHILD_ENABLE
1985 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1986 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
1987#endif
1988# endif
1989#endif
1990}
1125#endif 1991#endif
1126 1992
1127#if EV_MULTIPLICITY 1993#if EV_MULTIPLICITY
1128struct ev_loop * 1994struct ev_loop *
1129ev_default_loop_init (unsigned int flags) 1995ev_default_loop_init (unsigned int flags)
1130#else 1996#else
1131int 1997int
1132ev_default_loop (unsigned int flags) 1998ev_default_loop (unsigned int flags)
1133#endif 1999#endif
1134{ 2000{
1135 if (sigpipe [0] == sigpipe [1])
1136 if (pipe (sigpipe))
1137 return 0;
1138
1139 if (!ev_default_loop_ptr) 2001 if (!ev_default_loop_ptr)
1140 { 2002 {
1141#if EV_MULTIPLICITY 2003#if EV_MULTIPLICITY
1142 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2004 EV_P = ev_default_loop_ptr = &default_loop_struct;
1143#else 2005#else
1144 ev_default_loop_ptr = 1; 2006 ev_default_loop_ptr = 1;
1145#endif 2007#endif
1146 2008
1147 loop_init (EV_A_ flags); 2009 loop_init (EV_A_ flags);
1148 2010
1149 if (ev_backend (EV_A)) 2011 if (ev_backend (EV_A))
1150 { 2012 {
1151 siginit (EV_A); 2013#if EV_CHILD_ENABLE
1152
1153#ifndef _WIN32
1154 ev_signal_init (&childev, childcb, SIGCHLD); 2014 ev_signal_init (&childev, childcb, SIGCHLD);
1155 ev_set_priority (&childev, EV_MAXPRI); 2015 ev_set_priority (&childev, EV_MAXPRI);
1156 ev_signal_start (EV_A_ &childev); 2016 ev_signal_start (EV_A_ &childev);
1157 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2017 ev_unref (EV_A); /* child watcher should not keep loop alive */
1158#endif 2018#endif
… …
1166 2026
1167void 2027void
1168ev_default_destroy (void) 2028ev_default_destroy (void)
1169{ 2029{
1170#if EV_MULTIPLICITY 2030#if EV_MULTIPLICITY
1171 struct ev_loop *loop = ev_default_loop_ptr; 2031 EV_P = ev_default_loop_ptr;
1172#endif 2032#endif
1173 2033
1174#ifndef _WIN32 2034 ev_default_loop_ptr = 0;
2035
2036#if EV_CHILD_ENABLE
1175 ev_ref (EV_A); /* child watcher */ 2037 ev_ref (EV_A); /* child watcher */
1176 ev_signal_stop (EV_A_ &childev); 2038 ev_signal_stop (EV_A_ &childev);
1177#endif 2039#endif
1178 2040
1179 ev_ref (EV_A); /* signal watcher */
1180 ev_io_stop (EV_A_ &sigev);
1181
1182 close (sigpipe [0]); sigpipe [0] = 0;
1183 close (sigpipe [1]); sigpipe [1] = 0;
1184
1185 loop_destroy (EV_A); 2041 loop_destroy (EV_A);
1186} 2042}
1187 2043
1188void 2044void
1189ev_default_fork (void) 2045ev_default_fork (void)
1190{ 2046{
1191#if EV_MULTIPLICITY 2047#if EV_MULTIPLICITY
1192 struct ev_loop *loop = ev_default_loop_ptr; 2048 EV_P = ev_default_loop_ptr;
1193#endif 2049#endif
1194 2050
1195 if (backend) 2051 postfork = 1; /* must be in line with ev_loop_fork */
1196 postfork = 1;
1197} 2052}
1198 2053
1199/*****************************************************************************/ 2054/*****************************************************************************/
1200 2055
1201void 2056void
1202ev_invoke (EV_P_ void *w, int revents) 2057ev_invoke (EV_P_ void *w, int revents)
1203{ 2058{
1204 EV_CB_INVOKE ((W)w, revents); 2059 EV_CB_INVOKE ((W)w, revents);
1205} 2060}
1206 2061
1207void inline_speed 2062unsigned int
1208call_pending (EV_P) 2063ev_pending_count (EV_P)
2064{
2065 int pri;
2066 unsigned int count = 0;
2067
2068 for (pri = NUMPRI; pri--; )
2069 count += pendingcnt [pri];
2070
2071 return count;
2072}
2073
2074void noinline
2075ev_invoke_pending (EV_P)
1209{ 2076{
1210 int pri; 2077 int pri;
1211 2078
1212 for (pri = NUMPRI; pri--; ) 2079 for (pri = NUMPRI; pri--; )
1213 while (pendingcnt [pri]) 2080 while (pendingcnt [pri])
1214 { 2081 {
1215 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2082 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1216 2083
1217 if (expect_true (p->w))
1218 {
1219 /*assert (("non-pending watcher on pending list", p->w->pending));*/ 2084 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2085 /* ^ this is no longer true, as pending_w could be here */
1220 2086
1221 p->w->pending = 0; 2087 p->w->pending = 0;
1222 EV_CB_INVOKE (p->w, p->events); 2088 EV_CB_INVOKE (p->w, p->events);
1223 } 2089 EV_FREQUENT_CHECK;
1224 } 2090 }
1225} 2091}
1226 2092
1227void inline_size
1228timers_reify (EV_P)
1229{
1230 while (timercnt && ((WT)timers [0])->at <= mn_now)
1231 {
1232 ev_timer *w = (ev_timer *)timers [0];
1233
1234 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1235
1236 /* first reschedule or stop timer */
1237 if (w->repeat)
1238 {
1239 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1240
1241 ((WT)w)->at += w->repeat;
1242 if (((WT)w)->at < mn_now)
1243 ((WT)w)->at = mn_now;
1244
1245 downheap (timers, timercnt, 0);
1246 }
1247 else
1248 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1249
1250 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1251 }
1252}
1253
1254#if EV_PERIODIC_ENABLE
1255void inline_size
1256periodics_reify (EV_P)
1257{
1258 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1259 {
1260 ev_periodic *w = (ev_periodic *)periodics [0];
1261
1262 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1263
1264 /* first reschedule or stop timer */
1265 if (w->reschedule_cb)
1266 {
1267 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1268 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1269 downheap (periodics, periodiccnt, 0);
1270 }
1271 else if (w->interval)
1272 {
1273 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1274 if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1275 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1276 downheap (periodics, periodiccnt, 0);
1277 }
1278 else
1279 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1280
1281 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1282 }
1283}
1284
1285static void noinline
1286periodics_reschedule (EV_P)
1287{
1288 int i;
1289
1290 /* adjust periodics after time jump */
1291 for (i = 0; i < periodiccnt; ++i)
1292 {
1293 ev_periodic *w = (ev_periodic *)periodics [i];
1294
1295 if (w->reschedule_cb)
1296 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1297 else if (w->interval)
1298 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1299 }
1300
1301 /* now rebuild the heap */
1302 for (i = periodiccnt >> 1; i--; )
1303 downheap (periodics, periodiccnt, i);
1304}
1305#endif
1306
1307#if EV_IDLE_ENABLE 2093#if EV_IDLE_ENABLE
1308void inline_size 2094/* make idle watchers pending. this handles the "call-idle */
2095/* only when higher priorities are idle" logic */
2096inline_size void
1309idle_reify (EV_P) 2097idle_reify (EV_P)
1310{ 2098{
1311 if (expect_false (idleall)) 2099 if (expect_false (idleall))
1312 { 2100 {
1313 int pri; 2101 int pri;
… …
1325 } 2113 }
1326 } 2114 }
1327} 2115}
1328#endif 2116#endif
1329 2117
1330void inline_speed 2118/* make timers pending */
2119inline_size void
2120timers_reify (EV_P)
2121{
2122 EV_FREQUENT_CHECK;
2123
2124 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
2125 {
2126 do
2127 {
2128 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
2129
2130 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
2131
2132 /* first reschedule or stop timer */
2133 if (w->repeat)
2134 {
2135 ev_at (w) += w->repeat;
2136 if (ev_at (w) < mn_now)
2137 ev_at (w) = mn_now;
2138
2139 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
2140
2141 ANHE_at_cache (timers [HEAP0]);
2142 downheap (timers, timercnt, HEAP0);
2143 }
2144 else
2145 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
2146
2147 EV_FREQUENT_CHECK;
2148 feed_reverse (EV_A_ (W)w);
2149 }
2150 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
2151
2152 feed_reverse_done (EV_A_ EV_TIMER);
2153 }
2154}
2155
2156#if EV_PERIODIC_ENABLE
2157/* make periodics pending */
2158inline_size void
2159periodics_reify (EV_P)
2160{
2161 EV_FREQUENT_CHECK;
2162
2163 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2164 {
2165 int feed_count = 0;
2166
2167 do
2168 {
2169 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2170
2171 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
2172
2173 /* first reschedule or stop timer */
2174 if (w->reschedule_cb)
2175 {
2176 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2177
2178 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
2179
2180 ANHE_at_cache (periodics [HEAP0]);
2181 downheap (periodics, periodiccnt, HEAP0);
2182 }
2183 else if (w->interval)
2184 {
2185 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2186 /* if next trigger time is not sufficiently in the future, put it there */
2187 /* this might happen because of floating point inexactness */
2188 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2189 {
2190 ev_at (w) += w->interval;
2191
2192 /* if interval is unreasonably low we might still have a time in the past */
2193 /* so correct this. this will make the periodic very inexact, but the user */
2194 /* has effectively asked to get triggered more often than possible */
2195 if (ev_at (w) < ev_rt_now)
2196 ev_at (w) = ev_rt_now;
2197 }
2198
2199 ANHE_at_cache (periodics [HEAP0]);
2200 downheap (periodics, periodiccnt, HEAP0);
2201 }
2202 else
2203 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
2204
2205 EV_FREQUENT_CHECK;
2206 feed_reverse (EV_A_ (W)w);
2207 }
2208 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
2209
2210 feed_reverse_done (EV_A_ EV_PERIODIC);
2211 }
2212}
2213
2214/* simply recalculate all periodics */
2215/* TODO: maybe ensure that at least one event happens when jumping forward? */
2216static void noinline
2217periodics_reschedule (EV_P)
2218{
2219 int i;
2220
2221 /* adjust periodics after time jump */
2222 for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
2223 {
2224 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2225
2226 if (w->reschedule_cb)
2227 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2228 else if (w->interval)
2229 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2230
2231 ANHE_at_cache (periodics [i]);
2232 }
2233
2234 reheap (periodics, periodiccnt);
2235}
2236#endif
2237
2238/* adjust all timers by a given offset */
2239static void noinline
2240timers_reschedule (EV_P_ ev_tstamp adjust)
2241{
2242 int i;
2243
2244 for (i = 0; i < timercnt; ++i)
2245 {
2246 ANHE *he = timers + i + HEAP0;
2247 ANHE_w (*he)->at += adjust;
2248 ANHE_at_cache (*he);
2249 }
2250}
2251
2252/* fetch new monotonic and realtime times from the kernel */
2253/* also detect if there was a timejump, and act accordingly */
2254inline_speed void
1331time_update (EV_P_ ev_tstamp max_block) 2255time_update (EV_P_ ev_tstamp max_block)
1332{ 2256{
1333 int i;
1334
1335#if EV_USE_MONOTONIC 2257#if EV_USE_MONOTONIC
1336 if (expect_true (have_monotonic)) 2258 if (expect_true (have_monotonic))
1337 { 2259 {
2260 int i;
1338 ev_tstamp odiff = rtmn_diff; 2261 ev_tstamp odiff = rtmn_diff;
1339 2262
1340 mn_now = get_clock (); 2263 mn_now = get_clock ();
1341 2264
1342 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2265 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1360 */ 2283 */
1361 for (i = 4; --i; ) 2284 for (i = 4; --i; )
1362 { 2285 {
1363 rtmn_diff = ev_rt_now - mn_now; 2286 rtmn_diff = ev_rt_now - mn_now;
1364 2287
1365 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 2288 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP))
1366 return; /* all is well */ 2289 return; /* all is well */
1367 2290
1368 ev_rt_now = ev_time (); 2291 ev_rt_now = ev_time ();
1369 mn_now = get_clock (); 2292 mn_now = get_clock ();
1370 now_floor = mn_now; 2293 now_floor = mn_now;
1371 } 2294 }
1372 2295
2296 /* no timer adjustment, as the monotonic clock doesn't jump */
2297 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1373# if EV_PERIODIC_ENABLE 2298# if EV_PERIODIC_ENABLE
1374 periodics_reschedule (EV_A); 2299 periodics_reschedule (EV_A);
1375# endif 2300# endif
1376 /* no timer adjustment, as the monotonic clock doesn't jump */
1377 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1378 } 2301 }
1379 else 2302 else
1380#endif 2303#endif
1381 { 2304 {
1382 ev_rt_now = ev_time (); 2305 ev_rt_now = ev_time ();
1383 2306
1384 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 2307 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1385 { 2308 {
2309 /* adjust timers. this is easy, as the offset is the same for all of them */
2310 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1386#if EV_PERIODIC_ENABLE 2311#if EV_PERIODIC_ENABLE
1387 periodics_reschedule (EV_A); 2312 periodics_reschedule (EV_A);
1388#endif 2313#endif
1389 /* adjust timers. this is easy, as the offset is the same for all of them */
1390 for (i = 0; i < timercnt; ++i)
1391 ((WT)timers [i])->at += ev_rt_now - mn_now;
1392 } 2314 }
1393 2315
1394 mn_now = ev_rt_now; 2316 mn_now = ev_rt_now;
1395 } 2317 }
1396} 2318}
1397 2319
1398void 2320void
1399ev_ref (EV_P)
1400{
1401 ++activecnt;
1402}
1403
1404void
1405ev_unref (EV_P)
1406{
1407 --activecnt;
1408}
1409
1410static int loop_done;
1411
1412void
1413ev_loop (EV_P_ int flags) 2321ev_run (EV_P_ int flags)
1414{ 2322{
1415 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) 2323#if EV_FEATURE_API
1416 ? EVUNLOOP_ONE 2324 ++loop_depth;
1417 : EVUNLOOP_CANCEL; 2325#endif
1418 2326
2327 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2328
2329 loop_done = EVBREAK_CANCEL;
2330
1419 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2331 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1420 2332
1421 do 2333 do
1422 { 2334 {
2335#if EV_VERIFY >= 2
2336 ev_verify (EV_A);
2337#endif
2338
1423#ifndef _WIN32 2339#ifndef _WIN32
1424 if (expect_false (curpid)) /* penalise the forking check even more */ 2340 if (expect_false (curpid)) /* penalise the forking check even more */
1425 if (expect_false (getpid () != curpid)) 2341 if (expect_false (getpid () != curpid))
1426 { 2342 {
1427 curpid = getpid (); 2343 curpid = getpid ();
… …
1433 /* we might have forked, so queue fork handlers */ 2349 /* we might have forked, so queue fork handlers */
1434 if (expect_false (postfork)) 2350 if (expect_false (postfork))
1435 if (forkcnt) 2351 if (forkcnt)
1436 { 2352 {
1437 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2353 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1438 call_pending (EV_A); 2354 EV_INVOKE_PENDING;
1439 } 2355 }
1440#endif 2356#endif
1441 2357
2358#if EV_PREPARE_ENABLE
1442 /* queue prepare watchers (and execute them) */ 2359 /* queue prepare watchers (and execute them) */
1443 if (expect_false (preparecnt)) 2360 if (expect_false (preparecnt))
1444 { 2361 {
1445 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2362 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1446 call_pending (EV_A); 2363 EV_INVOKE_PENDING;
1447 } 2364 }
2365#endif
1448 2366
1449 if (expect_false (!activecnt)) 2367 if (expect_false (loop_done))
1450 break; 2368 break;
1451 2369
1452 /* we might have forked, so reify kernel state if necessary */ 2370 /* we might have forked, so reify kernel state if necessary */
1453 if (expect_false (postfork)) 2371 if (expect_false (postfork))
1454 loop_fork (EV_A); 2372 loop_fork (EV_A);
… …
1456 /* update fd-related kernel structures */ 2374 /* update fd-related kernel structures */
1457 fd_reify (EV_A); 2375 fd_reify (EV_A);
1458 2376
1459 /* calculate blocking time */ 2377 /* calculate blocking time */
1460 { 2378 {
1461 ev_tstamp block; 2379 ev_tstamp waittime = 0.;
2380 ev_tstamp sleeptime = 0.;
1462 2381
2382 /* remember old timestamp for io_blocktime calculation */
2383 ev_tstamp prev_mn_now = mn_now;
2384
2385 /* update time to cancel out callback processing overhead */
2386 time_update (EV_A_ 1e100);
2387
1463 if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt)) 2388 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt)))
1464 block = 0.; /* do not block at all */
1465 else
1466 { 2389 {
1467 /* update time to cancel out callback processing overhead */
1468 time_update (EV_A_ 1e100);
1469
1470 block = MAX_BLOCKTIME; 2390 waittime = MAX_BLOCKTIME;
1471 2391
1472 if (timercnt) 2392 if (timercnt)
1473 { 2393 {
1474 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge; 2394 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
1475 if (block > to) block = to; 2395 if (waittime > to) waittime = to;
1476 } 2396 }
1477 2397
1478#if EV_PERIODIC_ENABLE 2398#if EV_PERIODIC_ENABLE
1479 if (periodiccnt) 2399 if (periodiccnt)
1480 { 2400 {
1481 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge; 2401 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1482 if (block > to) block = to; 2402 if (waittime > to) waittime = to;
1483 } 2403 }
1484#endif 2404#endif
1485 2405
2406 /* don't let timeouts decrease the waittime below timeout_blocktime */
2407 if (expect_false (waittime < timeout_blocktime))
2408 waittime = timeout_blocktime;
2409
2410 /* extra check because io_blocktime is commonly 0 */
1486 if (expect_false (block < 0.)) block = 0.; 2411 if (expect_false (io_blocktime))
2412 {
2413 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2414
2415 if (sleeptime > waittime - backend_fudge)
2416 sleeptime = waittime - backend_fudge;
2417
2418 if (expect_true (sleeptime > 0.))
2419 {
2420 ev_sleep (sleeptime);
2421 waittime -= sleeptime;
2422 }
2423 }
1487 } 2424 }
1488 2425
2426#if EV_FEATURE_API
1489 ++loop_count; 2427 ++loop_count;
2428#endif
2429 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
1490 backend_poll (EV_A_ block); 2430 backend_poll (EV_A_ waittime);
2431 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
1491 2432
1492 /* update ev_rt_now, do magic */ 2433 /* update ev_rt_now, do magic */
1493 time_update (EV_A_ block); 2434 time_update (EV_A_ waittime + sleeptime);
1494 } 2435 }
1495 2436
1496 /* queue pending timers and reschedule them */ 2437 /* queue pending timers and reschedule them */
1497 timers_reify (EV_A); /* relative timers called last */ 2438 timers_reify (EV_A); /* relative timers called last */
1498#if EV_PERIODIC_ENABLE 2439#if EV_PERIODIC_ENABLE
… …
1502#if EV_IDLE_ENABLE 2443#if EV_IDLE_ENABLE
1503 /* queue idle watchers unless other events are pending */ 2444 /* queue idle watchers unless other events are pending */
1504 idle_reify (EV_A); 2445 idle_reify (EV_A);
1505#endif 2446#endif
1506 2447
2448#if EV_CHECK_ENABLE
1507 /* queue check watchers, to be executed first */ 2449 /* queue check watchers, to be executed first */
1508 if (expect_false (checkcnt)) 2450 if (expect_false (checkcnt))
1509 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2451 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2452#endif
1510 2453
1511 call_pending (EV_A); 2454 EV_INVOKE_PENDING;
1512
1513 } 2455 }
1514 while (expect_true (activecnt && !loop_done)); 2456 while (expect_true (
2457 activecnt
2458 && !loop_done
2459 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2460 ));
1515 2461
1516 if (loop_done == EVUNLOOP_ONE) 2462 if (loop_done == EVBREAK_ONE)
1517 loop_done = EVUNLOOP_CANCEL; 2463 loop_done = EVBREAK_CANCEL;
1518}
1519 2464
2465#if EV_FEATURE_API
2466 --loop_depth;
2467#endif
2468}
2469
1520void 2470void
1521ev_unloop (EV_P_ int how) 2471ev_break (EV_P_ int how)
1522{ 2472{
1523 loop_done = how; 2473 loop_done = how;
1524} 2474}
1525 2475
2476void
2477ev_ref (EV_P)
2478{
2479 ++activecnt;
2480}
2481
2482void
2483ev_unref (EV_P)
2484{
2485 --activecnt;
2486}
2487
2488void
2489ev_now_update (EV_P)
2490{
2491 time_update (EV_A_ 1e100);
2492}
2493
2494void
2495ev_suspend (EV_P)
2496{
2497 ev_now_update (EV_A);
2498}
2499
2500void
2501ev_resume (EV_P)
2502{
2503 ev_tstamp mn_prev = mn_now;
2504
2505 ev_now_update (EV_A);
2506 timers_reschedule (EV_A_ mn_now - mn_prev);
2507#if EV_PERIODIC_ENABLE
2508 /* TODO: really do this? */
2509 periodics_reschedule (EV_A);
2510#endif
2511}
2512
1526/*****************************************************************************/ 2513/*****************************************************************************/
2514/* singly-linked list management, used when the expected list length is short */
1527 2515
1528void inline_size 2516inline_size void
1529wlist_add (WL *head, WL elem) 2517wlist_add (WL *head, WL elem)
1530{ 2518{
1531 elem->next = *head; 2519 elem->next = *head;
1532 *head = elem; 2520 *head = elem;
1533} 2521}
1534 2522
1535void inline_size 2523inline_size void
1536wlist_del (WL *head, WL elem) 2524wlist_del (WL *head, WL elem)
1537{ 2525{
1538 while (*head) 2526 while (*head)
1539 { 2527 {
1540 if (*head == elem) 2528 if (expect_true (*head == elem))
1541 { 2529 {
1542 *head = elem->next; 2530 *head = elem->next;
1543 return; 2531 break;
1544 } 2532 }
1545 2533
1546 head = &(*head)->next; 2534 head = &(*head)->next;
1547 } 2535 }
1548} 2536}
1549 2537
1550void inline_speed 2538/* internal, faster, version of ev_clear_pending */
2539inline_speed void
1551clear_pending (EV_P_ W w) 2540clear_pending (EV_P_ W w)
1552{ 2541{
1553 if (w->pending) 2542 if (w->pending)
1554 { 2543 {
1555 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2544 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
1556 w->pending = 0; 2545 w->pending = 0;
1557 } 2546 }
1558} 2547}
1559 2548
1560int 2549int
… …
1564 int pending = w_->pending; 2553 int pending = w_->pending;
1565 2554
1566 if (expect_true (pending)) 2555 if (expect_true (pending))
1567 { 2556 {
1568 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2557 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2558 p->w = (W)&pending_w;
1569 w_->pending = 0; 2559 w_->pending = 0;
1570 p->w = 0;
1571 return p->events; 2560 return p->events;
1572 } 2561 }
1573 else 2562 else
1574 return 0; 2563 return 0;
1575} 2564}
1576 2565
1577void inline_size 2566inline_size void
1578pri_adjust (EV_P_ W w) 2567pri_adjust (EV_P_ W w)
1579{ 2568{
1580 int pri = w->priority; 2569 int pri = ev_priority (w);
1581 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2570 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1582 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2571 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1583 w->priority = pri; 2572 ev_set_priority (w, pri);
1584} 2573}
1585 2574
1586void inline_speed 2575inline_speed void
1587ev_start (EV_P_ W w, int active) 2576ev_start (EV_P_ W w, int active)
1588{ 2577{
1589 pri_adjust (EV_A_ w); 2578 pri_adjust (EV_A_ w);
1590 w->active = active; 2579 w->active = active;
1591 ev_ref (EV_A); 2580 ev_ref (EV_A);
1592} 2581}
1593 2582
1594void inline_size 2583inline_size void
1595ev_stop (EV_P_ W w) 2584ev_stop (EV_P_ W w)
1596{ 2585{
1597 ev_unref (EV_A); 2586 ev_unref (EV_A);
1598 w->active = 0; 2587 w->active = 0;
1599} 2588}
… …
1606 int fd = w->fd; 2595 int fd = w->fd;
1607 2596
1608 if (expect_false (ev_is_active (w))) 2597 if (expect_false (ev_is_active (w)))
1609 return; 2598 return;
1610 2599
1611 assert (("ev_io_start called with negative fd", fd >= 0)); 2600 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2601 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2602
2603 EV_FREQUENT_CHECK;
1612 2604
1613 ev_start (EV_A_ (W)w, 1); 2605 ev_start (EV_A_ (W)w, 1);
1614 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2606 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
1615 wlist_add (&anfds[fd].head, (WL)w); 2607 wlist_add (&anfds[fd].head, (WL)w);
1616 2608
1617 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 2609 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
1618 w->events &= ~EV_IOFDSET; 2610 w->events &= ~EV__IOFDSET;
2611
2612 EV_FREQUENT_CHECK;
1619} 2613}
1620 2614
1621void noinline 2615void noinline
1622ev_io_stop (EV_P_ ev_io *w) 2616ev_io_stop (EV_P_ ev_io *w)
1623{ 2617{
1624 clear_pending (EV_A_ (W)w); 2618 clear_pending (EV_A_ (W)w);
1625 if (expect_false (!ev_is_active (w))) 2619 if (expect_false (!ev_is_active (w)))
1626 return; 2620 return;
1627 2621
1628 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 2622 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2623
2624 EV_FREQUENT_CHECK;
1629 2625
1630 wlist_del (&anfds[w->fd].head, (WL)w); 2626 wlist_del (&anfds[w->fd].head, (WL)w);
1631 ev_stop (EV_A_ (W)w); 2627 ev_stop (EV_A_ (W)w);
1632 2628
1633 fd_change (EV_A_ w->fd, 1); 2629 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2630
2631 EV_FREQUENT_CHECK;
1634} 2632}
1635 2633
1636void noinline 2634void noinline
1637ev_timer_start (EV_P_ ev_timer *w) 2635ev_timer_start (EV_P_ ev_timer *w)
1638{ 2636{
1639 if (expect_false (ev_is_active (w))) 2637 if (expect_false (ev_is_active (w)))
1640 return; 2638 return;
1641 2639
1642 ((WT)w)->at += mn_now; 2640 ev_at (w) += mn_now;
1643 2641
1644 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2642 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1645 2643
2644 EV_FREQUENT_CHECK;
2645
2646 ++timercnt;
1646 ev_start (EV_A_ (W)w, ++timercnt); 2647 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
1647 array_needsize (WT, timers, timermax, timercnt, EMPTY2); 2648 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1648 timers [timercnt - 1] = (WT)w; 2649 ANHE_w (timers [ev_active (w)]) = (WT)w;
1649 upheap (timers, timercnt - 1); 2650 ANHE_at_cache (timers [ev_active (w)]);
2651 upheap (timers, ev_active (w));
1650 2652
2653 EV_FREQUENT_CHECK;
2654
1651 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/ 2655 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
1652} 2656}
1653 2657
1654void noinline 2658void noinline
1655ev_timer_stop (EV_P_ ev_timer *w) 2659ev_timer_stop (EV_P_ ev_timer *w)
1656{ 2660{
1657 clear_pending (EV_A_ (W)w); 2661 clear_pending (EV_A_ (W)w);
1658 if (expect_false (!ev_is_active (w))) 2662 if (expect_false (!ev_is_active (w)))
1659 return; 2663 return;
1660 2664
1661 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w)); 2665 EV_FREQUENT_CHECK;
1662 2666
1663 { 2667 {
1664 int active = ((W)w)->active; 2668 int active = ev_active (w);
1665 2669
2670 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2671
2672 --timercnt;
2673
1666 if (expect_true (--active < --timercnt)) 2674 if (expect_true (active < timercnt + HEAP0))
1667 { 2675 {
1668 timers [active] = timers [timercnt]; 2676 timers [active] = timers [timercnt + HEAP0];
1669 adjustheap (timers, timercnt, active); 2677 adjustheap (timers, timercnt, active);
1670 } 2678 }
1671 } 2679 }
1672 2680
1673 ((WT)w)->at -= mn_now; 2681 ev_at (w) -= mn_now;
1674 2682
1675 ev_stop (EV_A_ (W)w); 2683 ev_stop (EV_A_ (W)w);
2684
2685 EV_FREQUENT_CHECK;
1676} 2686}
1677 2687
1678void noinline 2688void noinline
1679ev_timer_again (EV_P_ ev_timer *w) 2689ev_timer_again (EV_P_ ev_timer *w)
1680{ 2690{
2691 EV_FREQUENT_CHECK;
2692
1681 if (ev_is_active (w)) 2693 if (ev_is_active (w))
1682 { 2694 {
1683 if (w->repeat) 2695 if (w->repeat)
1684 { 2696 {
1685 ((WT)w)->at = mn_now + w->repeat; 2697 ev_at (w) = mn_now + w->repeat;
2698 ANHE_at_cache (timers [ev_active (w)]);
1686 adjustheap (timers, timercnt, ((W)w)->active - 1); 2699 adjustheap (timers, timercnt, ev_active (w));
1687 } 2700 }
1688 else 2701 else
1689 ev_timer_stop (EV_A_ w); 2702 ev_timer_stop (EV_A_ w);
1690 } 2703 }
1691 else if (w->repeat) 2704 else if (w->repeat)
1692 { 2705 {
1693 w->at = w->repeat; 2706 ev_at (w) = w->repeat;
1694 ev_timer_start (EV_A_ w); 2707 ev_timer_start (EV_A_ w);
1695 } 2708 }
2709
2710 EV_FREQUENT_CHECK;
2711}
2712
2713ev_tstamp
2714ev_timer_remaining (EV_P_ ev_timer *w)
2715{
2716 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
1696} 2717}
1697 2718
1698#if EV_PERIODIC_ENABLE 2719#if EV_PERIODIC_ENABLE
1699void noinline 2720void noinline
1700ev_periodic_start (EV_P_ ev_periodic *w) 2721ev_periodic_start (EV_P_ ev_periodic *w)
1701{ 2722{
1702 if (expect_false (ev_is_active (w))) 2723 if (expect_false (ev_is_active (w)))
1703 return; 2724 return;
1704 2725
1705 if (w->reschedule_cb) 2726 if (w->reschedule_cb)
1706 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 2727 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1707 else if (w->interval) 2728 else if (w->interval)
1708 { 2729 {
1709 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2730 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
1710 /* this formula differs from the one in periodic_reify because we do not always round up */ 2731 /* this formula differs from the one in periodic_reify because we do not always round up */
1711 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2732 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1712 } 2733 }
1713 else 2734 else
1714 ((WT)w)->at = w->offset; 2735 ev_at (w) = w->offset;
1715 2736
2737 EV_FREQUENT_CHECK;
2738
2739 ++periodiccnt;
1716 ev_start (EV_A_ (W)w, ++periodiccnt); 2740 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
1717 array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2); 2741 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
1718 periodics [periodiccnt - 1] = (WT)w; 2742 ANHE_w (periodics [ev_active (w)]) = (WT)w;
1719 upheap (periodics, periodiccnt - 1); 2743 ANHE_at_cache (periodics [ev_active (w)]);
2744 upheap (periodics, ev_active (w));
1720 2745
2746 EV_FREQUENT_CHECK;
2747
1721 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/ 2748 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
1722} 2749}
1723 2750
1724void noinline 2751void noinline
1725ev_periodic_stop (EV_P_ ev_periodic *w) 2752ev_periodic_stop (EV_P_ ev_periodic *w)
1726{ 2753{
1727 clear_pending (EV_A_ (W)w); 2754 clear_pending (EV_A_ (W)w);
1728 if (expect_false (!ev_is_active (w))) 2755 if (expect_false (!ev_is_active (w)))
1729 return; 2756 return;
1730 2757
1731 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w)); 2758 EV_FREQUENT_CHECK;
1732 2759
1733 { 2760 {
1734 int active = ((W)w)->active; 2761 int active = ev_active (w);
1735 2762
2763 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2764
2765 --periodiccnt;
2766
1736 if (expect_true (--active < --periodiccnt)) 2767 if (expect_true (active < periodiccnt + HEAP0))
1737 { 2768 {
1738 periodics [active] = periodics [periodiccnt]; 2769 periodics [active] = periodics [periodiccnt + HEAP0];
1739 adjustheap (periodics, periodiccnt, active); 2770 adjustheap (periodics, periodiccnt, active);
1740 } 2771 }
1741 } 2772 }
1742 2773
1743 ev_stop (EV_A_ (W)w); 2774 ev_stop (EV_A_ (W)w);
2775
2776 EV_FREQUENT_CHECK;
1744} 2777}
1745 2778
1746void noinline 2779void noinline
1747ev_periodic_again (EV_P_ ev_periodic *w) 2780ev_periodic_again (EV_P_ ev_periodic *w)
1748{ 2781{
… …
1754 2787
1755#ifndef SA_RESTART 2788#ifndef SA_RESTART
1756# define SA_RESTART 0 2789# define SA_RESTART 0
1757#endif 2790#endif
1758 2791
2792#if EV_SIGNAL_ENABLE
2793
1759void noinline 2794void noinline
1760ev_signal_start (EV_P_ ev_signal *w) 2795ev_signal_start (EV_P_ ev_signal *w)
1761{ 2796{
1762#if EV_MULTIPLICITY
1763 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1764#endif
1765 if (expect_false (ev_is_active (w))) 2797 if (expect_false (ev_is_active (w)))
1766 return; 2798 return;
1767 2799
1768 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 2800 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
1769 2801
2802#if EV_MULTIPLICITY
2803 assert (("libev: a signal must not be attached to two different loops",
2804 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2805
2806 signals [w->signum - 1].loop = EV_A;
2807#endif
2808
2809 EV_FREQUENT_CHECK;
2810
2811#if EV_USE_SIGNALFD
2812 if (sigfd == -2)
1770 { 2813 {
1771#ifndef _WIN32 2814 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
1772 sigset_t full, prev; 2815 if (sigfd < 0 && errno == EINVAL)
1773 sigfillset (&full); 2816 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
1774 sigprocmask (SIG_SETMASK, &full, &prev);
1775#endif
1776 2817
1777 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 2818 if (sigfd >= 0)
2819 {
2820 fd_intern (sigfd); /* doing it twice will not hurt */
1778 2821
1779#ifndef _WIN32 2822 sigemptyset (&sigfd_set);
1780 sigprocmask (SIG_SETMASK, &prev, 0); 2823
1781#endif 2824 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
2825 ev_set_priority (&sigfd_w, EV_MAXPRI);
2826 ev_io_start (EV_A_ &sigfd_w);
2827 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
2828 }
1782 } 2829 }
2830
2831 if (sigfd >= 0)
2832 {
2833 /* TODO: check .head */
2834 sigaddset (&sigfd_set, w->signum);
2835 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
2836
2837 signalfd (sigfd, &sigfd_set, 0);
2838 }
2839#endif
1783 2840
1784 ev_start (EV_A_ (W)w, 1); 2841 ev_start (EV_A_ (W)w, 1);
1785 wlist_add (&signals [w->signum - 1].head, (WL)w); 2842 wlist_add (&signals [w->signum - 1].head, (WL)w);
1786 2843
1787 if (!((WL)w)->next) 2844 if (!((WL)w)->next)
2845# if EV_USE_SIGNALFD
2846 if (sigfd < 0) /*TODO*/
2847# endif
1788 { 2848 {
1789#if _WIN32 2849# ifdef _WIN32
2850 evpipe_init (EV_A);
2851
1790 signal (w->signum, sighandler); 2852 signal (w->signum, ev_sighandler);
1791#else 2853# else
1792 struct sigaction sa; 2854 struct sigaction sa;
2855
2856 evpipe_init (EV_A);
2857
1793 sa.sa_handler = sighandler; 2858 sa.sa_handler = ev_sighandler;
1794 sigfillset (&sa.sa_mask); 2859 sigfillset (&sa.sa_mask);
1795 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2860 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1796 sigaction (w->signum, &sa, 0); 2861 sigaction (w->signum, &sa, 0);
2862
2863 sigemptyset (&sa.sa_mask);
2864 sigaddset (&sa.sa_mask, w->signum);
2865 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
1797#endif 2866#endif
1798 } 2867 }
2868
2869 EV_FREQUENT_CHECK;
1799} 2870}
1800 2871
1801void noinline 2872void noinline
1802ev_signal_stop (EV_P_ ev_signal *w) 2873ev_signal_stop (EV_P_ ev_signal *w)
1803{ 2874{
1804 clear_pending (EV_A_ (W)w); 2875 clear_pending (EV_A_ (W)w);
1805 if (expect_false (!ev_is_active (w))) 2876 if (expect_false (!ev_is_active (w)))
1806 return; 2877 return;
1807 2878
2879 EV_FREQUENT_CHECK;
2880
1808 wlist_del (&signals [w->signum - 1].head, (WL)w); 2881 wlist_del (&signals [w->signum - 1].head, (WL)w);
1809 ev_stop (EV_A_ (W)w); 2882 ev_stop (EV_A_ (W)w);
1810 2883
1811 if (!signals [w->signum - 1].head) 2884 if (!signals [w->signum - 1].head)
2885 {
2886#if EV_MULTIPLICITY
2887 signals [w->signum - 1].loop = 0; /* unattach from signal */
2888#endif
2889#if EV_USE_SIGNALFD
2890 if (sigfd >= 0)
2891 {
2892 sigset_t ss;
2893
2894 sigemptyset (&ss);
2895 sigaddset (&ss, w->signum);
2896 sigdelset (&sigfd_set, w->signum);
2897
2898 signalfd (sigfd, &sigfd_set, 0);
2899 sigprocmask (SIG_UNBLOCK, &ss, 0);
2900 }
2901 else
2902#endif
1812 signal (w->signum, SIG_DFL); 2903 signal (w->signum, SIG_DFL);
2904 }
2905
2906 EV_FREQUENT_CHECK;
1813} 2907}
2908
2909#endif
2910
2911#if EV_CHILD_ENABLE
1814 2912
1815void 2913void
1816ev_child_start (EV_P_ ev_child *w) 2914ev_child_start (EV_P_ ev_child *w)
1817{ 2915{
1818#if EV_MULTIPLICITY 2916#if EV_MULTIPLICITY
1819 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2917 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1820#endif 2918#endif
1821 if (expect_false (ev_is_active (w))) 2919 if (expect_false (ev_is_active (w)))
1822 return; 2920 return;
1823 2921
2922 EV_FREQUENT_CHECK;
2923
1824 ev_start (EV_A_ (W)w, 1); 2924 ev_start (EV_A_ (W)w, 1);
1825 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2925 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2926
2927 EV_FREQUENT_CHECK;
1826} 2928}
1827 2929
1828void 2930void
1829ev_child_stop (EV_P_ ev_child *w) 2931ev_child_stop (EV_P_ ev_child *w)
1830{ 2932{
1831 clear_pending (EV_A_ (W)w); 2933 clear_pending (EV_A_ (W)w);
1832 if (expect_false (!ev_is_active (w))) 2934 if (expect_false (!ev_is_active (w)))
1833 return; 2935 return;
1834 2936
2937 EV_FREQUENT_CHECK;
2938
1835 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2939 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
1836 ev_stop (EV_A_ (W)w); 2940 ev_stop (EV_A_ (W)w);
2941
2942 EV_FREQUENT_CHECK;
1837} 2943}
2944
2945#endif
1838 2946
1839#if EV_STAT_ENABLE 2947#if EV_STAT_ENABLE
1840 2948
1841# ifdef _WIN32 2949# ifdef _WIN32
1842# undef lstat 2950# undef lstat
1843# define lstat(a,b) _stati64 (a,b) 2951# define lstat(a,b) _stati64 (a,b)
1844# endif 2952# endif
1845 2953
1846#define DEF_STAT_INTERVAL 5.0074891 2954#define DEF_STAT_INTERVAL 5.0074891
2955#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
1847#define MIN_STAT_INTERVAL 0.1074891 2956#define MIN_STAT_INTERVAL 0.1074891
1848 2957
1849static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 2958static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1850 2959
1851#if EV_USE_INOTIFY 2960#if EV_USE_INOTIFY
1852# define EV_INOTIFY_BUFSIZE 8192 2961
2962/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
2963# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
1853 2964
1854static void noinline 2965static void noinline
1855infy_add (EV_P_ ev_stat *w) 2966infy_add (EV_P_ ev_stat *w)
1856{ 2967{
1857 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); 2968 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);
1858 2969
1859 if (w->wd < 0) 2970 if (w->wd >= 0)
2971 {
2972 struct statfs sfs;
2973
2974 /* now local changes will be tracked by inotify, but remote changes won't */
2975 /* unless the filesystem is known to be local, we therefore still poll */
2976 /* also do poll on <2.6.25, but with normal frequency */
2977
2978 if (!fs_2625)
2979 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2980 else if (!statfs (w->path, &sfs)
2981 && (sfs.f_type == 0x1373 /* devfs */
2982 || sfs.f_type == 0xEF53 /* ext2/3 */
2983 || sfs.f_type == 0x3153464a /* jfs */
2984 || sfs.f_type == 0x52654973 /* reiser3 */
2985 || sfs.f_type == 0x01021994 /* tempfs */
2986 || sfs.f_type == 0x58465342 /* xfs */))
2987 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
2988 else
2989 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
1860 { 2990 }
1861 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 2991 else
2992 {
2993 /* can't use inotify, continue to stat */
2994 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
1862 2995
1863 /* monitor some parent directory for speedup hints */ 2996 /* if path is not there, monitor some parent directory for speedup hints */
2997 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2998 /* but an efficiency issue only */
1864 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 2999 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
1865 { 3000 {
1866 char path [4096]; 3001 char path [4096];
1867 strcpy (path, w->path); 3002 strcpy (path, w->path);
1868 3003
… …
1871 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 3006 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
1872 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 3007 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
1873 3008
1874 char *pend = strrchr (path, '/'); 3009 char *pend = strrchr (path, '/');
1875 3010
1876 if (!pend) 3011 if (!pend || pend == path)
1877 break; /* whoops, no '/', complain to your admin */ 3012 break;
1878 3013
1879 *pend = 0; 3014 *pend = 0;
1880 w->wd = inotify_add_watch (fs_fd, path, mask); 3015 w->wd = inotify_add_watch (fs_fd, path, mask);
1881 } 3016 }
1882 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3017 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
1883 } 3018 }
1884 } 3019 }
1885 else
1886 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
1887 3020
1888 if (w->wd >= 0) 3021 if (w->wd >= 0)
1889 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3022 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
3023
3024 /* now re-arm timer, if required */
3025 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3026 ev_timer_again (EV_A_ &w->timer);
3027 if (ev_is_active (&w->timer)) ev_unref (EV_A);
1890} 3028}
1891 3029
1892static void noinline 3030static void noinline
1893infy_del (EV_P_ ev_stat *w) 3031infy_del (EV_P_ ev_stat *w)
1894{ 3032{
… …
1897 3035
1898 if (wd < 0) 3036 if (wd < 0)
1899 return; 3037 return;
1900 3038
1901 w->wd = -2; 3039 w->wd = -2;
1902 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3040 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
1903 wlist_del (&fs_hash [slot].head, (WL)w); 3041 wlist_del (&fs_hash [slot].head, (WL)w);
1904 3042
1905 /* remove this watcher, if others are watching it, they will rearm */ 3043 /* remove this watcher, if others are watching it, they will rearm */
1906 inotify_rm_watch (fs_fd, wd); 3044 inotify_rm_watch (fs_fd, wd);
1907} 3045}
1908 3046
1909static void noinline 3047static void noinline
1910infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3048infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
1911{ 3049{
1912 if (slot < 0) 3050 if (slot < 0)
1913 /* overflow, need to check for all hahs slots */ 3051 /* overflow, need to check for all hash slots */
1914 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3052 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
1915 infy_wd (EV_A_ slot, wd, ev); 3053 infy_wd (EV_A_ slot, wd, ev);
1916 else 3054 else
1917 { 3055 {
1918 WL w_; 3056 WL w_;
1919 3057
1920 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3058 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
1921 { 3059 {
1922 ev_stat *w = (ev_stat *)w_; 3060 ev_stat *w = (ev_stat *)w_;
1923 w_ = w_->next; /* lets us remove this watcher and all before it */ 3061 w_ = w_->next; /* lets us remove this watcher and all before it */
1924 3062
1925 if (w->wd == wd || wd == -1) 3063 if (w->wd == wd || wd == -1)
1926 { 3064 {
1927 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3065 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
1928 { 3066 {
3067 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
1929 w->wd = -1; 3068 w->wd = -1;
1930 infy_add (EV_A_ w); /* re-add, no matter what */ 3069 infy_add (EV_A_ w); /* re-add, no matter what */
1931 } 3070 }
1932 3071
1933 stat_timer_cb (EV_A_ &w->timer, 0); 3072 stat_timer_cb (EV_A_ &w->timer, 0);
… …
1938 3077
1939static void 3078static void
1940infy_cb (EV_P_ ev_io *w, int revents) 3079infy_cb (EV_P_ ev_io *w, int revents)
1941{ 3080{
1942 char buf [EV_INOTIFY_BUFSIZE]; 3081 char buf [EV_INOTIFY_BUFSIZE];
1943 struct inotify_event *ev = (struct inotify_event *)buf;
1944 int ofs; 3082 int ofs;
1945 int len = read (fs_fd, buf, sizeof (buf)); 3083 int len = read (fs_fd, buf, sizeof (buf));
1946 3084
1947 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3085 for (ofs = 0; ofs < len; )
3086 {
3087 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
1948 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3088 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3089 ofs += sizeof (struct inotify_event) + ev->len;
3090 }
1949} 3091}
1950 3092
1951void inline_size 3093inline_size void
3094ev_check_2625 (EV_P)
3095{
3096 /* kernels < 2.6.25 are borked
3097 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3098 */
3099 if (ev_linux_version () < 0x020619)
3100 return;
3101
3102 fs_2625 = 1;
3103}
3104
3105inline_size int
3106infy_newfd (void)
3107{
3108#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3109 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3110 if (fd >= 0)
3111 return fd;
3112#endif
3113 return inotify_init ();
3114}
3115
3116inline_size void
1952infy_init (EV_P) 3117infy_init (EV_P)
1953{ 3118{
1954 if (fs_fd != -2) 3119 if (fs_fd != -2)
1955 return; 3120 return;
1956 3121
3122 fs_fd = -1;
3123
3124 ev_check_2625 (EV_A);
3125
1957 fs_fd = inotify_init (); 3126 fs_fd = infy_newfd ();
1958 3127
1959 if (fs_fd >= 0) 3128 if (fs_fd >= 0)
1960 { 3129 {
3130 fd_intern (fs_fd);
1961 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3131 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
1962 ev_set_priority (&fs_w, EV_MAXPRI); 3132 ev_set_priority (&fs_w, EV_MAXPRI);
1963 ev_io_start (EV_A_ &fs_w); 3133 ev_io_start (EV_A_ &fs_w);
3134 ev_unref (EV_A);
1964 } 3135 }
1965} 3136}
1966 3137
1967void inline_size 3138inline_size void
1968infy_fork (EV_P) 3139infy_fork (EV_P)
1969{ 3140{
1970 int slot; 3141 int slot;
1971 3142
1972 if (fs_fd < 0) 3143 if (fs_fd < 0)
1973 return; 3144 return;
1974 3145
3146 ev_ref (EV_A);
3147 ev_io_stop (EV_A_ &fs_w);
1975 close (fs_fd); 3148 close (fs_fd);
1976 fs_fd = inotify_init (); 3149 fs_fd = infy_newfd ();
1977 3150
3151 if (fs_fd >= 0)
3152 {
3153 fd_intern (fs_fd);
3154 ev_io_set (&fs_w, fs_fd, EV_READ);
3155 ev_io_start (EV_A_ &fs_w);
3156 ev_unref (EV_A);
3157 }
3158
1978 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3159 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
1979 { 3160 {
1980 WL w_ = fs_hash [slot].head; 3161 WL w_ = fs_hash [slot].head;
1981 fs_hash [slot].head = 0; 3162 fs_hash [slot].head = 0;
1982 3163
1983 while (w_) 3164 while (w_)
… …
1988 w->wd = -1; 3169 w->wd = -1;
1989 3170
1990 if (fs_fd >= 0) 3171 if (fs_fd >= 0)
1991 infy_add (EV_A_ w); /* re-add, no matter what */ 3172 infy_add (EV_A_ w); /* re-add, no matter what */
1992 else 3173 else
3174 {
3175 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3176 if (ev_is_active (&w->timer)) ev_ref (EV_A);
1993 ev_timer_start (EV_A_ &w->timer); 3177 ev_timer_again (EV_A_ &w->timer);
3178 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3179 }
1994 } 3180 }
1995
1996 } 3181 }
1997} 3182}
1998 3183
3184#endif
3185
3186#ifdef _WIN32
3187# define EV_LSTAT(p,b) _stati64 (p, b)
3188#else
3189# define EV_LSTAT(p,b) lstat (p, b)
1999#endif 3190#endif
2000 3191
2001void 3192void
2002ev_stat_stat (EV_P_ ev_stat *w) 3193ev_stat_stat (EV_P_ ev_stat *w)
2003{ 3194{
… …
2010static void noinline 3201static void noinline
2011stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3202stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2012{ 3203{
2013 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3204 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2014 3205
2015 /* we copy this here each the time so that */ 3206 ev_statdata prev = w->attr;
2016 /* prev has the old value when the callback gets invoked */
2017 w->prev = w->attr;
2018 ev_stat_stat (EV_A_ w); 3207 ev_stat_stat (EV_A_ w);
2019 3208
2020 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3209 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2021 if ( 3210 if (
2022 w->prev.st_dev != w->attr.st_dev 3211 prev.st_dev != w->attr.st_dev
2023 || w->prev.st_ino != w->attr.st_ino 3212 || prev.st_ino != w->attr.st_ino
2024 || w->prev.st_mode != w->attr.st_mode 3213 || prev.st_mode != w->attr.st_mode
2025 || w->prev.st_nlink != w->attr.st_nlink 3214 || prev.st_nlink != w->attr.st_nlink
2026 || w->prev.st_uid != w->attr.st_uid 3215 || prev.st_uid != w->attr.st_uid
2027 || w->prev.st_gid != w->attr.st_gid 3216 || prev.st_gid != w->attr.st_gid
2028 || w->prev.st_rdev != w->attr.st_rdev 3217 || prev.st_rdev != w->attr.st_rdev
2029 || w->prev.st_size != w->attr.st_size 3218 || prev.st_size != w->attr.st_size
2030 || w->prev.st_atime != w->attr.st_atime 3219 || prev.st_atime != w->attr.st_atime
2031 || w->prev.st_mtime != w->attr.st_mtime 3220 || prev.st_mtime != w->attr.st_mtime
2032 || w->prev.st_ctime != w->attr.st_ctime 3221 || prev.st_ctime != w->attr.st_ctime
2033 ) { 3222 ) {
3223 /* we only update w->prev on actual differences */
3224 /* in case we test more often than invoke the callback, */
3225 /* to ensure that prev is always different to attr */
3226 w->prev = prev;
3227
2034 #if EV_USE_INOTIFY 3228 #if EV_USE_INOTIFY
3229 if (fs_fd >= 0)
3230 {
2035 infy_del (EV_A_ w); 3231 infy_del (EV_A_ w);
2036 infy_add (EV_A_ w); 3232 infy_add (EV_A_ w);
2037 ev_stat_stat (EV_A_ w); /* avoid race... */ 3233 ev_stat_stat (EV_A_ w); /* avoid race... */
3234 }
2038 #endif 3235 #endif
2039 3236
2040 ev_feed_event (EV_A_ w, EV_STAT); 3237 ev_feed_event (EV_A_ w, EV_STAT);
2041 } 3238 }
2042} 3239}
… …
2045ev_stat_start (EV_P_ ev_stat *w) 3242ev_stat_start (EV_P_ ev_stat *w)
2046{ 3243{
2047 if (expect_false (ev_is_active (w))) 3244 if (expect_false (ev_is_active (w)))
2048 return; 3245 return;
2049 3246
2050 /* since we use memcmp, we need to clear any padding data etc. */
2051 memset (&w->prev, 0, sizeof (ev_statdata));
2052 memset (&w->attr, 0, sizeof (ev_statdata));
2053
2054 ev_stat_stat (EV_A_ w); 3247 ev_stat_stat (EV_A_ w);
2055 3248
3249 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2056 if (w->interval < MIN_STAT_INTERVAL) 3250 w->interval = MIN_STAT_INTERVAL;
2057 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2058 3251
2059 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 3252 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2060 ev_set_priority (&w->timer, ev_priority (w)); 3253 ev_set_priority (&w->timer, ev_priority (w));
2061 3254
2062#if EV_USE_INOTIFY 3255#if EV_USE_INOTIFY
2063 infy_init (EV_A); 3256 infy_init (EV_A);
2064 3257
2065 if (fs_fd >= 0) 3258 if (fs_fd >= 0)
2066 infy_add (EV_A_ w); 3259 infy_add (EV_A_ w);
2067 else 3260 else
2068#endif 3261#endif
3262 {
2069 ev_timer_start (EV_A_ &w->timer); 3263 ev_timer_again (EV_A_ &w->timer);
3264 ev_unref (EV_A);
3265 }
2070 3266
2071 ev_start (EV_A_ (W)w, 1); 3267 ev_start (EV_A_ (W)w, 1);
3268
3269 EV_FREQUENT_CHECK;
2072} 3270}
2073 3271
2074void 3272void
2075ev_stat_stop (EV_P_ ev_stat *w) 3273ev_stat_stop (EV_P_ ev_stat *w)
2076{ 3274{
2077 clear_pending (EV_A_ (W)w); 3275 clear_pending (EV_A_ (W)w);
2078 if (expect_false (!ev_is_active (w))) 3276 if (expect_false (!ev_is_active (w)))
2079 return; 3277 return;
2080 3278
3279 EV_FREQUENT_CHECK;
3280
2081#if EV_USE_INOTIFY 3281#if EV_USE_INOTIFY
2082 infy_del (EV_A_ w); 3282 infy_del (EV_A_ w);
2083#endif 3283#endif
3284
3285 if (ev_is_active (&w->timer))
3286 {
3287 ev_ref (EV_A);
2084 ev_timer_stop (EV_A_ &w->timer); 3288 ev_timer_stop (EV_A_ &w->timer);
3289 }
2085 3290
2086 ev_stop (EV_A_ (W)w); 3291 ev_stop (EV_A_ (W)w);
3292
3293 EV_FREQUENT_CHECK;
2087} 3294}
2088#endif 3295#endif
2089 3296
2090#if EV_IDLE_ENABLE 3297#if EV_IDLE_ENABLE
2091void 3298void
… …
2093{ 3300{
2094 if (expect_false (ev_is_active (w))) 3301 if (expect_false (ev_is_active (w)))
2095 return; 3302 return;
2096 3303
2097 pri_adjust (EV_A_ (W)w); 3304 pri_adjust (EV_A_ (W)w);
3305
3306 EV_FREQUENT_CHECK;
2098 3307
2099 { 3308 {
2100 int active = ++idlecnt [ABSPRI (w)]; 3309 int active = ++idlecnt [ABSPRI (w)];
2101 3310
2102 ++idleall; 3311 ++idleall;
2103 ev_start (EV_A_ (W)w, active); 3312 ev_start (EV_A_ (W)w, active);
2104 3313
2105 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 3314 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2106 idles [ABSPRI (w)][active - 1] = w; 3315 idles [ABSPRI (w)][active - 1] = w;
2107 } 3316 }
3317
3318 EV_FREQUENT_CHECK;
2108} 3319}
2109 3320
2110void 3321void
2111ev_idle_stop (EV_P_ ev_idle *w) 3322ev_idle_stop (EV_P_ ev_idle *w)
2112{ 3323{
2113 clear_pending (EV_A_ (W)w); 3324 clear_pending (EV_A_ (W)w);
2114 if (expect_false (!ev_is_active (w))) 3325 if (expect_false (!ev_is_active (w)))
2115 return; 3326 return;
2116 3327
3328 EV_FREQUENT_CHECK;
3329
2117 { 3330 {
2118 int active = ((W)w)->active; 3331 int active = ev_active (w);
2119 3332
2120 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]]; 3333 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2121 ((W)idles [ABSPRI (w)][active - 1])->active = active; 3334 ev_active (idles [ABSPRI (w)][active - 1]) = active;
2122 3335
2123 ev_stop (EV_A_ (W)w); 3336 ev_stop (EV_A_ (W)w);
2124 --idleall; 3337 --idleall;
2125 } 3338 }
2126}
2127#endif
2128 3339
3340 EV_FREQUENT_CHECK;
3341}
3342#endif
3343
3344#if EV_PREPARE_ENABLE
2129void 3345void
2130ev_prepare_start (EV_P_ ev_prepare *w) 3346ev_prepare_start (EV_P_ ev_prepare *w)
2131{ 3347{
2132 if (expect_false (ev_is_active (w))) 3348 if (expect_false (ev_is_active (w)))
2133 return; 3349 return;
3350
3351 EV_FREQUENT_CHECK;
2134 3352
2135 ev_start (EV_A_ (W)w, ++preparecnt); 3353 ev_start (EV_A_ (W)w, ++preparecnt);
2136 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 3354 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2137 prepares [preparecnt - 1] = w; 3355 prepares [preparecnt - 1] = w;
3356
3357 EV_FREQUENT_CHECK;
2138} 3358}
2139 3359
2140void 3360void
2141ev_prepare_stop (EV_P_ ev_prepare *w) 3361ev_prepare_stop (EV_P_ ev_prepare *w)
2142{ 3362{
2143 clear_pending (EV_A_ (W)w); 3363 clear_pending (EV_A_ (W)w);
2144 if (expect_false (!ev_is_active (w))) 3364 if (expect_false (!ev_is_active (w)))
2145 return; 3365 return;
2146 3366
3367 EV_FREQUENT_CHECK;
3368
2147 { 3369 {
2148 int active = ((W)w)->active; 3370 int active = ev_active (w);
3371
2149 prepares [active - 1] = prepares [--preparecnt]; 3372 prepares [active - 1] = prepares [--preparecnt];
2150 ((W)prepares [active - 1])->active = active; 3373 ev_active (prepares [active - 1]) = active;
2151 } 3374 }
2152 3375
2153 ev_stop (EV_A_ (W)w); 3376 ev_stop (EV_A_ (W)w);
2154}
2155 3377
3378 EV_FREQUENT_CHECK;
3379}
3380#endif
3381
3382#if EV_CHECK_ENABLE
2156void 3383void
2157ev_check_start (EV_P_ ev_check *w) 3384ev_check_start (EV_P_ ev_check *w)
2158{ 3385{
2159 if (expect_false (ev_is_active (w))) 3386 if (expect_false (ev_is_active (w)))
2160 return; 3387 return;
3388
3389 EV_FREQUENT_CHECK;
2161 3390
2162 ev_start (EV_A_ (W)w, ++checkcnt); 3391 ev_start (EV_A_ (W)w, ++checkcnt);
2163 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 3392 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2164 checks [checkcnt - 1] = w; 3393 checks [checkcnt - 1] = w;
3394
3395 EV_FREQUENT_CHECK;
2165} 3396}
2166 3397
2167void 3398void
2168ev_check_stop (EV_P_ ev_check *w) 3399ev_check_stop (EV_P_ ev_check *w)
2169{ 3400{
2170 clear_pending (EV_A_ (W)w); 3401 clear_pending (EV_A_ (W)w);
2171 if (expect_false (!ev_is_active (w))) 3402 if (expect_false (!ev_is_active (w)))
2172 return; 3403 return;
2173 3404
3405 EV_FREQUENT_CHECK;
3406
2174 { 3407 {
2175 int active = ((W)w)->active; 3408 int active = ev_active (w);
3409
2176 checks [active - 1] = checks [--checkcnt]; 3410 checks [active - 1] = checks [--checkcnt];
2177 ((W)checks [active - 1])->active = active; 3411 ev_active (checks [active - 1]) = active;
2178 } 3412 }
2179 3413
2180 ev_stop (EV_A_ (W)w); 3414 ev_stop (EV_A_ (W)w);
3415
3416 EV_FREQUENT_CHECK;
2181} 3417}
3418#endif
2182 3419
2183#if EV_EMBED_ENABLE 3420#if EV_EMBED_ENABLE
2184void noinline 3421void noinline
2185ev_embed_sweep (EV_P_ ev_embed *w) 3422ev_embed_sweep (EV_P_ ev_embed *w)
2186{ 3423{
2187 ev_loop (w->other, EVLOOP_NONBLOCK); 3424 ev_run (w->other, EVRUN_NOWAIT);
2188} 3425}
2189 3426
2190static void 3427static void
2191embed_io_cb (EV_P_ ev_io *io, int revents) 3428embed_io_cb (EV_P_ ev_io *io, int revents)
2192{ 3429{
2193 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 3430 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2194 3431
2195 if (ev_cb (w)) 3432 if (ev_cb (w))
2196 ev_feed_event (EV_A_ (W)w, EV_EMBED); 3433 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2197 else 3434 else
2198 ev_embed_sweep (loop, w); 3435 ev_run (w->other, EVRUN_NOWAIT);
2199} 3436}
2200 3437
2201static void 3438static void
2202embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3439embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2203{ 3440{
2204 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3441 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2205 3442
2206 fd_reify (w->other); 3443 {
3444 EV_P = w->other;
3445
3446 while (fdchangecnt)
3447 {
3448 fd_reify (EV_A);
3449 ev_run (EV_A_ EVRUN_NOWAIT);
3450 }
3451 }
2207} 3452}
3453
3454static void
3455embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
3456{
3457 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3458
3459 ev_embed_stop (EV_A_ w);
3460
3461 {
3462 EV_P = w->other;
3463
3464 ev_loop_fork (EV_A);
3465 ev_run (EV_A_ EVRUN_NOWAIT);
3466 }
3467
3468 ev_embed_start (EV_A_ w);
3469}
3470
3471#if 0
3472static void
3473embed_idle_cb (EV_P_ ev_idle *idle, int revents)
3474{
3475 ev_idle_stop (EV_A_ idle);
3476}
3477#endif
2208 3478
2209void 3479void
2210ev_embed_start (EV_P_ ev_embed *w) 3480ev_embed_start (EV_P_ ev_embed *w)
2211{ 3481{
2212 if (expect_false (ev_is_active (w))) 3482 if (expect_false (ev_is_active (w)))
2213 return; 3483 return;
2214 3484
2215 { 3485 {
2216 struct ev_loop *loop = w->other; 3486 EV_P = w->other;
2217 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3487 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2218 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 3488 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2219 } 3489 }
3490
3491 EV_FREQUENT_CHECK;
2220 3492
2221 ev_set_priority (&w->io, ev_priority (w)); 3493 ev_set_priority (&w->io, ev_priority (w));
2222 ev_io_start (EV_A_ &w->io); 3494 ev_io_start (EV_A_ &w->io);
2223 3495
2224 ev_prepare_init (&w->prepare, embed_prepare_cb); 3496 ev_prepare_init (&w->prepare, embed_prepare_cb);
2225 ev_set_priority (&w->prepare, EV_MINPRI); 3497 ev_set_priority (&w->prepare, EV_MINPRI);
2226 ev_prepare_start (EV_A_ &w->prepare); 3498 ev_prepare_start (EV_A_ &w->prepare);
2227 3499
3500 ev_fork_init (&w->fork, embed_fork_cb);
3501 ev_fork_start (EV_A_ &w->fork);
3502
3503 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
3504
2228 ev_start (EV_A_ (W)w, 1); 3505 ev_start (EV_A_ (W)w, 1);
3506
3507 EV_FREQUENT_CHECK;
2229} 3508}
2230 3509
2231void 3510void
2232ev_embed_stop (EV_P_ ev_embed *w) 3511ev_embed_stop (EV_P_ ev_embed *w)
2233{ 3512{
2234 clear_pending (EV_A_ (W)w); 3513 clear_pending (EV_A_ (W)w);
2235 if (expect_false (!ev_is_active (w))) 3514 if (expect_false (!ev_is_active (w)))
2236 return; 3515 return;
2237 3516
3517 EV_FREQUENT_CHECK;
3518
2238 ev_io_stop (EV_A_ &w->io); 3519 ev_io_stop (EV_A_ &w->io);
2239 ev_prepare_stop (EV_A_ &w->prepare); 3520 ev_prepare_stop (EV_A_ &w->prepare);
3521 ev_fork_stop (EV_A_ &w->fork);
2240 3522
2241 ev_stop (EV_A_ (W)w); 3523 ev_stop (EV_A_ (W)w);
3524
3525 EV_FREQUENT_CHECK;
2242} 3526}
2243#endif 3527#endif
2244 3528
2245#if EV_FORK_ENABLE 3529#if EV_FORK_ENABLE
2246void 3530void
2247ev_fork_start (EV_P_ ev_fork *w) 3531ev_fork_start (EV_P_ ev_fork *w)
2248{ 3532{
2249 if (expect_false (ev_is_active (w))) 3533 if (expect_false (ev_is_active (w)))
2250 return; 3534 return;
3535
3536 EV_FREQUENT_CHECK;
2251 3537
2252 ev_start (EV_A_ (W)w, ++forkcnt); 3538 ev_start (EV_A_ (W)w, ++forkcnt);
2253 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 3539 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2254 forks [forkcnt - 1] = w; 3540 forks [forkcnt - 1] = w;
3541
3542 EV_FREQUENT_CHECK;
2255} 3543}
2256 3544
2257void 3545void
2258ev_fork_stop (EV_P_ ev_fork *w) 3546ev_fork_stop (EV_P_ ev_fork *w)
2259{ 3547{
2260 clear_pending (EV_A_ (W)w); 3548 clear_pending (EV_A_ (W)w);
2261 if (expect_false (!ev_is_active (w))) 3549 if (expect_false (!ev_is_active (w)))
2262 return; 3550 return;
2263 3551
3552 EV_FREQUENT_CHECK;
3553
2264 { 3554 {
2265 int active = ((W)w)->active; 3555 int active = ev_active (w);
3556
2266 forks [active - 1] = forks [--forkcnt]; 3557 forks [active - 1] = forks [--forkcnt];
2267 ((W)forks [active - 1])->active = active; 3558 ev_active (forks [active - 1]) = active;
2268 } 3559 }
2269 3560
2270 ev_stop (EV_A_ (W)w); 3561 ev_stop (EV_A_ (W)w);
3562
3563 EV_FREQUENT_CHECK;
3564}
3565#endif
3566
3567#if EV_ASYNC_ENABLE
3568void
3569ev_async_start (EV_P_ ev_async *w)
3570{
3571 if (expect_false (ev_is_active (w)))
3572 return;
3573
3574 w->sent = 0;
3575
3576 evpipe_init (EV_A);
3577
3578 EV_FREQUENT_CHECK;
3579
3580 ev_start (EV_A_ (W)w, ++asynccnt);
3581 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
3582 asyncs [asynccnt - 1] = w;
3583
3584 EV_FREQUENT_CHECK;
3585}
3586
3587void
3588ev_async_stop (EV_P_ ev_async *w)
3589{
3590 clear_pending (EV_A_ (W)w);
3591 if (expect_false (!ev_is_active (w)))
3592 return;
3593
3594 EV_FREQUENT_CHECK;
3595
3596 {
3597 int active = ev_active (w);
3598
3599 asyncs [active - 1] = asyncs [--asynccnt];
3600 ev_active (asyncs [active - 1]) = active;
3601 }
3602
3603 ev_stop (EV_A_ (W)w);
3604
3605 EV_FREQUENT_CHECK;
3606}
3607
3608void
3609ev_async_send (EV_P_ ev_async *w)
3610{
3611 w->sent = 1;
3612 evpipe_write (EV_A_ &async_pending);
2271} 3613}
2272#endif 3614#endif
2273 3615
2274/*****************************************************************************/ 3616/*****************************************************************************/
2275 3617
… …
2285once_cb (EV_P_ struct ev_once *once, int revents) 3627once_cb (EV_P_ struct ev_once *once, int revents)
2286{ 3628{
2287 void (*cb)(int revents, void *arg) = once->cb; 3629 void (*cb)(int revents, void *arg) = once->cb;
2288 void *arg = once->arg; 3630 void *arg = once->arg;
2289 3631
2290 ev_io_stop (EV_A_ &once->io); 3632 ev_io_stop (EV_A_ &once->io);
2291 ev_timer_stop (EV_A_ &once->to); 3633 ev_timer_stop (EV_A_ &once->to);
2292 ev_free (once); 3634 ev_free (once);
2293 3635
2294 cb (revents, arg); 3636 cb (revents, arg);
2295} 3637}
2296 3638
2297static void 3639static void
2298once_cb_io (EV_P_ ev_io *w, int revents) 3640once_cb_io (EV_P_ ev_io *w, int revents)
2299{ 3641{
2300 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 3642 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
3643
3644 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2301} 3645}
2302 3646
2303static void 3647static void
2304once_cb_to (EV_P_ ev_timer *w, int revents) 3648once_cb_to (EV_P_ ev_timer *w, int revents)
2305{ 3649{
2306 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 3650 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
3651
3652 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2307} 3653}
2308 3654
2309void 3655void
2310ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 3656ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2311{ 3657{
2312 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 3658 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
2313 3659
2314 if (expect_false (!once)) 3660 if (expect_false (!once))
2315 { 3661 {
2316 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 3662 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
2317 return; 3663 return;
2318 } 3664 }
2319 3665
2320 once->cb = cb; 3666 once->cb = cb;
2321 once->arg = arg; 3667 once->arg = arg;
… …
2333 ev_timer_set (&once->to, timeout, 0.); 3679 ev_timer_set (&once->to, timeout, 0.);
2334 ev_timer_start (EV_A_ &once->to); 3680 ev_timer_start (EV_A_ &once->to);
2335 } 3681 }
2336} 3682}
2337 3683
3684/*****************************************************************************/
3685
3686#if EV_WALK_ENABLE
3687void
3688ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3689{
3690 int i, j;
3691 ev_watcher_list *wl, *wn;
3692
3693 if (types & (EV_IO | EV_EMBED))
3694 for (i = 0; i < anfdmax; ++i)
3695 for (wl = anfds [i].head; wl; )
3696 {
3697 wn = wl->next;
3698
3699#if EV_EMBED_ENABLE
3700 if (ev_cb ((ev_io *)wl) == embed_io_cb)
3701 {
3702 if (types & EV_EMBED)
3703 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
3704 }
3705 else
3706#endif
3707#if EV_USE_INOTIFY
3708 if (ev_cb ((ev_io *)wl) == infy_cb)
3709 ;
3710 else
3711#endif
3712 if ((ev_io *)wl != &pipe_w)
3713 if (types & EV_IO)
3714 cb (EV_A_ EV_IO, wl);
3715
3716 wl = wn;
3717 }
3718
3719 if (types & (EV_TIMER | EV_STAT))
3720 for (i = timercnt + HEAP0; i-- > HEAP0; )
3721#if EV_STAT_ENABLE
3722 /*TODO: timer is not always active*/
3723 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
3724 {
3725 if (types & EV_STAT)
3726 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
3727 }
3728 else
3729#endif
3730 if (types & EV_TIMER)
3731 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
3732
3733#if EV_PERIODIC_ENABLE
3734 if (types & EV_PERIODIC)
3735 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
3736 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3737#endif
3738
3739#if EV_IDLE_ENABLE
3740 if (types & EV_IDLE)
3741 for (j = NUMPRI; i--; )
3742 for (i = idlecnt [j]; i--; )
3743 cb (EV_A_ EV_IDLE, idles [j][i]);
3744#endif
3745
3746#if EV_FORK_ENABLE
3747 if (types & EV_FORK)
3748 for (i = forkcnt; i--; )
3749 if (ev_cb (forks [i]) != embed_fork_cb)
3750 cb (EV_A_ EV_FORK, forks [i]);
3751#endif
3752
3753#if EV_ASYNC_ENABLE
3754 if (types & EV_ASYNC)
3755 for (i = asynccnt; i--; )
3756 cb (EV_A_ EV_ASYNC, asyncs [i]);
3757#endif
3758
3759#if EV_PREPARE_ENABLE
3760 if (types & EV_PREPARE)
3761 for (i = preparecnt; i--; )
3762# if EV_EMBED_ENABLE
3763 if (ev_cb (prepares [i]) != embed_prepare_cb)
3764# endif
3765 cb (EV_A_ EV_PREPARE, prepares [i]);
3766#endif
3767
3768#if EV_CHECK_ENABLE
3769 if (types & EV_CHECK)
3770 for (i = checkcnt; i--; )
3771 cb (EV_A_ EV_CHECK, checks [i]);
3772#endif
3773
3774#if EV_SIGNAL_ENABLE
3775 if (types & EV_SIGNAL)
3776 for (i = 0; i < EV_NSIG - 1; ++i)
3777 for (wl = signals [i].head; wl; )
3778 {
3779 wn = wl->next;
3780 cb (EV_A_ EV_SIGNAL, wl);
3781 wl = wn;
3782 }
3783#endif
3784
3785#if EV_CHILD_ENABLE
3786 if (types & EV_CHILD)
3787 for (i = (EV_PID_HASHSIZE); i--; )
3788 for (wl = childs [i]; wl; )
3789 {
3790 wn = wl->next;
3791 cb (EV_A_ EV_CHILD, wl);
3792 wl = wn;
3793 }
3794#endif
3795/* EV_STAT 0x00001000 /* stat data changed */
3796/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3797}
3798#endif
3799
2338#if EV_MULTIPLICITY 3800#if EV_MULTIPLICITY
2339 #include "ev_wrap.h" 3801 #include "ev_wrap.h"
2340#endif 3802#endif
2341 3803
2342#ifdef __cplusplus 3804EV_CPP(})
2343}
2344#endif
2345 3805

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