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Comparing libev/ev.c (file contents):
Revision 1.186 by root, Sat Dec 15 23:14:38 2007 UTC vs.
Revision 1.363 by root, Sun Oct 24 19:38:20 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/statfs.h>
213# include <sys/inotify.h> 388# include <sys/inotify.h>
389/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
390# ifndef IN_DONT_FOLLOW
391# undef EV_USE_INOTIFY
392# define EV_USE_INOTIFY 0
393# endif
214#endif 394#endif
215 395
216#if EV_SELECT_IS_WINSOCKET 396#if EV_SELECT_IS_WINSOCKET
217# include <winsock.h> 397# include <winsock.h>
218#endif 398#endif
219 399
400#if EV_USE_EVENTFD
401/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
402# include <stdint.h>
403# ifndef EFD_NONBLOCK
404# define EFD_NONBLOCK O_NONBLOCK
405# endif
406# ifndef EFD_CLOEXEC
407# ifdef O_CLOEXEC
408# define EFD_CLOEXEC O_CLOEXEC
409# else
410# define EFD_CLOEXEC 02000000
411# endif
412# endif
413EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
414#endif
415
416#if EV_USE_SIGNALFD
417/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
418# include <stdint.h>
419# ifndef SFD_NONBLOCK
420# define SFD_NONBLOCK O_NONBLOCK
421# endif
422# ifndef SFD_CLOEXEC
423# ifdef O_CLOEXEC
424# define SFD_CLOEXEC O_CLOEXEC
425# else
426# define SFD_CLOEXEC 02000000
427# endif
428# endif
429EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
430
431struct signalfd_siginfo
432{
433 uint32_t ssi_signo;
434 char pad[128 - sizeof (uint32_t)];
435};
436#endif
437
220/**/ 438/**/
439
440#if EV_VERIFY >= 3
441# define EV_FREQUENT_CHECK ev_verify (EV_A)
442#else
443# define EV_FREQUENT_CHECK do { } while (0)
444#endif
221 445
222/* 446/*
223 * This is used to avoid floating point rounding problems. 447 * This is used to avoid floating point rounding problems.
224 * It is added to ev_rt_now when scheduling periodics 448 * It is added to ev_rt_now when scheduling periodics
225 * to ensure progress, time-wise, even when rounding 449 * to ensure progress, time-wise, even when rounding
… …
229 */ 453 */
230#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 454#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
231 455
232#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 456#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) */ 457#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 */ 458
459#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
460#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
235 461
236#if __GNUC__ >= 4 462#if __GNUC__ >= 4
237# define expect(expr,value) __builtin_expect ((expr),(value)) 463# define expect(expr,value) __builtin_expect ((expr),(value))
238# define noinline __attribute__ ((noinline)) 464# define noinline __attribute__ ((noinline))
239#else 465#else
240# define expect(expr,value) (expr) 466# define expect(expr,value) (expr)
241# define noinline 467# define noinline
242# if __STDC_VERSION__ < 199901L 468# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
243# define inline 469# define inline
244# endif 470# endif
245#endif 471#endif
246 472
247#define expect_false(expr) expect ((expr) != 0, 0) 473#define expect_false(expr) expect ((expr) != 0, 0)
248#define expect_true(expr) expect ((expr) != 0, 1) 474#define expect_true(expr) expect ((expr) != 0, 1)
249#define inline_size static inline 475#define inline_size static inline
250 476
251#if EV_MINIMAL 477#if EV_FEATURE_CODE
478# define inline_speed static inline
479#else
252# define inline_speed static noinline 480# define inline_speed static noinline
481#endif
482
483#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
484
485#if EV_MINPRI == EV_MAXPRI
486# define ABSPRI(w) (((W)w), 0)
253#else 487#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) 488# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
489#endif
259 490
260#define EMPTY /* required for microsofts broken pseudo-c compiler */ 491#define EMPTY /* required for microsofts broken pseudo-c compiler */
261#define EMPTY2(a,b) /* used to suppress some warnings */ 492#define EMPTY2(a,b) /* used to suppress some warnings */
262 493
263typedef ev_watcher *W; 494typedef ev_watcher *W;
264typedef ev_watcher_list *WL; 495typedef ev_watcher_list *WL;
265typedef ev_watcher_time *WT; 496typedef ev_watcher_time *WT;
266 497
498#define ev_active(w) ((W)(w))->active
499#define ev_at(w) ((WT)(w))->at
500
501#if EV_USE_REALTIME
502/* sig_atomic_t is used to avoid per-thread variables or locking but still */
503/* giving it a reasonably high chance of working on typical architectures */
504static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
505#endif
506
507#if EV_USE_MONOTONIC
267static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 508static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
509#endif
510
511#ifndef EV_FD_TO_WIN32_HANDLE
512# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
513#endif
514#ifndef EV_WIN32_HANDLE_TO_FD
515# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
516#endif
517#ifndef EV_WIN32_CLOSE_FD
518# define EV_WIN32_CLOSE_FD(fd) close (fd)
519#endif
268 520
269#ifdef _WIN32 521#ifdef _WIN32
270# include "ev_win32.c" 522# include "ev_win32.c"
271#endif 523#endif
272 524
273/*****************************************************************************/ 525/*****************************************************************************/
274 526
527#ifdef __linux
528# include <sys/utsname.h>
529#endif
530
531static unsigned int noinline
532ev_linux_version (void)
533{
534#ifdef __linux
535 unsigned int v = 0;
536 struct utsname buf;
537 int i;
538 char *p = buf.release;
539
540 if (uname (&buf))
541 return 0;
542
543 for (i = 3+1; --i; )
544 {
545 unsigned int c = 0;
546
547 for (;;)
548 {
549 if (*p >= '0' && *p <= '9')
550 c = c * 10 + *p++ - '0';
551 else
552 {
553 p += *p == '.';
554 break;
555 }
556 }
557
558 v = (v << 8) | c;
559 }
560
561 return v;
562#else
563 return 0;
564#endif
565}
566
567/*****************************************************************************/
568
569#if EV_AVOID_STDIO
570static void noinline
571ev_printerr (const char *msg)
572{
573 write (STDERR_FILENO, msg, strlen (msg));
574}
575#endif
576
275static void (*syserr_cb)(const char *msg); 577static void (*syserr_cb)(const char *msg);
276 578
277void 579void
278ev_set_syserr_cb (void (*cb)(const char *msg)) 580ev_set_syserr_cb (void (*cb)(const char *msg))
279{ 581{
280 syserr_cb = cb; 582 syserr_cb = cb;
281} 583}
282 584
283static void noinline 585static void noinline
284syserr (const char *msg) 586ev_syserr (const char *msg)
285{ 587{
286 if (!msg) 588 if (!msg)
287 msg = "(libev) system error"; 589 msg = "(libev) system error";
288 590
289 if (syserr_cb) 591 if (syserr_cb)
290 syserr_cb (msg); 592 syserr_cb (msg);
291 else 593 else
292 { 594 {
595#if EV_AVOID_STDIO
596 const char *err = strerror (errno);
597
598 ev_printerr (msg);
599 ev_printerr (": ");
600 ev_printerr (err);
601 ev_printerr ("\n");
602#else
293 perror (msg); 603 perror (msg);
604#endif
294 abort (); 605 abort ();
295 } 606 }
296} 607}
297 608
609static void *
610ev_realloc_emul (void *ptr, long size)
611{
612#if __GLIBC__
613 return realloc (ptr, size);
614#else
615 /* some systems, notably openbsd and darwin, fail to properly
616 * implement realloc (x, 0) (as required by both ansi c-89 and
617 * the single unix specification, so work around them here.
618 */
619
620 if (size)
621 return realloc (ptr, size);
622
623 free (ptr);
624 return 0;
625#endif
626}
627
298static void *(*alloc)(void *ptr, long size); 628static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
299 629
300void 630void
301ev_set_allocator (void *(*cb)(void *ptr, long size)) 631ev_set_allocator (void *(*cb)(void *ptr, long size))
302{ 632{
303 alloc = cb; 633 alloc = cb;
304} 634}
305 635
306inline_speed void * 636inline_speed void *
307ev_realloc (void *ptr, long size) 637ev_realloc (void *ptr, long size)
308{ 638{
309 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); 639 ptr = alloc (ptr, size);
310 640
311 if (!ptr && size) 641 if (!ptr && size)
312 { 642 {
643#if EV_AVOID_STDIO
644 ev_printerr ("libev: memory allocation failed, aborting.\n");
645#else
313 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 646 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
647#endif
314 abort (); 648 abort ();
315 } 649 }
316 650
317 return ptr; 651 return ptr;
318} 652}
… …
320#define ev_malloc(size) ev_realloc (0, (size)) 654#define ev_malloc(size) ev_realloc (0, (size))
321#define ev_free(ptr) ev_realloc ((ptr), 0) 655#define ev_free(ptr) ev_realloc ((ptr), 0)
322 656
323/*****************************************************************************/ 657/*****************************************************************************/
324 658
659/* set in reify when reification needed */
660#define EV_ANFD_REIFY 1
661
662/* file descriptor info structure */
325typedef struct 663typedef struct
326{ 664{
327 WL head; 665 WL head;
328 unsigned char events; 666 unsigned char events; /* the events watched for */
667 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
668 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
329 unsigned char reify; 669 unsigned char unused;
670#if EV_USE_EPOLL
671 unsigned int egen; /* generation counter to counter epoll bugs */
672#endif
330#if EV_SELECT_IS_WINSOCKET 673#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
331 SOCKET handle; 674 SOCKET handle;
332#endif 675#endif
676#if EV_USE_IOCP
677 OVERLAPPED or, ow;
678#endif
333} ANFD; 679} ANFD;
334 680
681/* stores the pending event set for a given watcher */
335typedef struct 682typedef struct
336{ 683{
337 W w; 684 W w;
338 int events; 685 int events; /* the pending event set for the given watcher */
339} ANPENDING; 686} ANPENDING;
340 687
341#if EV_USE_INOTIFY 688#if EV_USE_INOTIFY
689/* hash table entry per inotify-id */
342typedef struct 690typedef struct
343{ 691{
344 WL head; 692 WL head;
345} ANFS; 693} ANFS;
694#endif
695
696/* Heap Entry */
697#if EV_HEAP_CACHE_AT
698 /* a heap element */
699 typedef struct {
700 ev_tstamp at;
701 WT w;
702 } ANHE;
703
704 #define ANHE_w(he) (he).w /* access watcher, read-write */
705 #define ANHE_at(he) (he).at /* access cached at, read-only */
706 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
707#else
708 /* a heap element */
709 typedef WT ANHE;
710
711 #define ANHE_w(he) (he)
712 #define ANHE_at(he) (he)->at
713 #define ANHE_at_cache(he)
346#endif 714#endif
347 715
348#if EV_MULTIPLICITY 716#if EV_MULTIPLICITY
349 717
350 struct ev_loop 718 struct ev_loop
… …
369 737
370 static int ev_default_loop_ptr; 738 static int ev_default_loop_ptr;
371 739
372#endif 740#endif
373 741
742#if EV_FEATURE_API
743# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
744# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
745# define EV_INVOKE_PENDING invoke_cb (EV_A)
746#else
747# define EV_RELEASE_CB (void)0
748# define EV_ACQUIRE_CB (void)0
749# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
750#endif
751
752#define EVBREAK_RECURSE 0x80
753
374/*****************************************************************************/ 754/*****************************************************************************/
375 755
756#ifndef EV_HAVE_EV_TIME
376ev_tstamp 757ev_tstamp
377ev_time (void) 758ev_time (void)
378{ 759{
379#if EV_USE_REALTIME 760#if EV_USE_REALTIME
761 if (expect_true (have_realtime))
762 {
380 struct timespec ts; 763 struct timespec ts;
381 clock_gettime (CLOCK_REALTIME, &ts); 764 clock_gettime (CLOCK_REALTIME, &ts);
382 return ts.tv_sec + ts.tv_nsec * 1e-9; 765 return ts.tv_sec + ts.tv_nsec * 1e-9;
383#else 766 }
767#endif
768
384 struct timeval tv; 769 struct timeval tv;
385 gettimeofday (&tv, 0); 770 gettimeofday (&tv, 0);
386 return tv.tv_sec + tv.tv_usec * 1e-6; 771 return tv.tv_sec + tv.tv_usec * 1e-6;
387#endif
388} 772}
773#endif
389 774
390ev_tstamp inline_size 775inline_size ev_tstamp
391get_clock (void) 776get_clock (void)
392{ 777{
393#if EV_USE_MONOTONIC 778#if EV_USE_MONOTONIC
394 if (expect_true (have_monotonic)) 779 if (expect_true (have_monotonic))
395 { 780 {
… …
408{ 793{
409 return ev_rt_now; 794 return ev_rt_now;
410} 795}
411#endif 796#endif
412 797
413int inline_size 798void
799ev_sleep (ev_tstamp delay)
800{
801 if (delay > 0.)
802 {
803#if EV_USE_NANOSLEEP
804 struct timespec ts;
805
806 EV_TS_SET (ts, delay);
807 nanosleep (&ts, 0);
808#elif defined(_WIN32)
809 Sleep ((unsigned long)(delay * 1e3));
810#else
811 struct timeval tv;
812
813 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
814 /* something not guaranteed by newer posix versions, but guaranteed */
815 /* by older ones */
816 EV_TV_SET (tv, delay);
817 select (0, 0, 0, 0, &tv);
818#endif
819 }
820}
821
822/*****************************************************************************/
823
824#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
825
826/* find a suitable new size for the given array, */
827/* hopefully by rounding to a nice-to-malloc size */
828inline_size int
414array_nextsize (int elem, int cur, int cnt) 829array_nextsize (int elem, int cur, int cnt)
415{ 830{
416 int ncur = cur + 1; 831 int ncur = cur + 1;
417 832
418 do 833 do
419 ncur <<= 1; 834 ncur <<= 1;
420 while (cnt > ncur); 835 while (cnt > ncur);
421 836
422 /* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */ 837 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */
423 if (elem * ncur > 4096) 838 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
424 { 839 {
425 ncur *= elem; 840 ncur *= elem;
426 ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095; 841 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
427 ncur = ncur - sizeof (void *) * 4; 842 ncur = ncur - sizeof (void *) * 4;
428 ncur /= elem; 843 ncur /= elem;
429 } 844 }
430 845
431 return ncur; 846 return ncur;
… …
435array_realloc (int elem, void *base, int *cur, int cnt) 850array_realloc (int elem, void *base, int *cur, int cnt)
436{ 851{
437 *cur = array_nextsize (elem, *cur, cnt); 852 *cur = array_nextsize (elem, *cur, cnt);
438 return ev_realloc (base, elem * *cur); 853 return ev_realloc (base, elem * *cur);
439} 854}
855
856#define array_init_zero(base,count) \
857 memset ((void *)(base), 0, sizeof (*(base)) * (count))
440 858
441#define array_needsize(type,base,cur,cnt,init) \ 859#define array_needsize(type,base,cur,cnt,init) \
442 if (expect_false ((cnt) > (cur))) \ 860 if (expect_false ((cnt) > (cur))) \
443 { \ 861 { \
444 int ocur_ = (cur); \ 862 int ocur_ = (cur); \
… …
456 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 874 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
457 } 875 }
458#endif 876#endif
459 877
460#define array_free(stem, idx) \ 878#define array_free(stem, idx) \
461 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 879 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
462 880
463/*****************************************************************************/ 881/*****************************************************************************/
882
883/* dummy callback for pending events */
884static void noinline
885pendingcb (EV_P_ ev_prepare *w, int revents)
886{
887}
464 888
465void noinline 889void noinline
466ev_feed_event (EV_P_ void *w, int revents) 890ev_feed_event (EV_P_ void *w, int revents)
467{ 891{
468 W w_ = (W)w; 892 W w_ = (W)w;
… …
477 pendings [pri][w_->pending - 1].w = w_; 901 pendings [pri][w_->pending - 1].w = w_;
478 pendings [pri][w_->pending - 1].events = revents; 902 pendings [pri][w_->pending - 1].events = revents;
479 } 903 }
480} 904}
481 905
482void inline_speed 906inline_speed void
907feed_reverse (EV_P_ W w)
908{
909 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
910 rfeeds [rfeedcnt++] = w;
911}
912
913inline_size void
914feed_reverse_done (EV_P_ int revents)
915{
916 do
917 ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
918 while (rfeedcnt);
919}
920
921inline_speed void
483queue_events (EV_P_ W *events, int eventcnt, int type) 922queue_events (EV_P_ W *events, int eventcnt, int type)
484{ 923{
485 int i; 924 int i;
486 925
487 for (i = 0; i < eventcnt; ++i) 926 for (i = 0; i < eventcnt; ++i)
488 ev_feed_event (EV_A_ events [i], type); 927 ev_feed_event (EV_A_ events [i], type);
489} 928}
490 929
491/*****************************************************************************/ 930/*****************************************************************************/
492 931
493void inline_size 932inline_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) 933fd_event_nocheck (EV_P_ int fd, int revents)
508{ 934{
509 ANFD *anfd = anfds + fd; 935 ANFD *anfd = anfds + fd;
510 ev_io *w; 936 ev_io *w;
511 937
512 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 938 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
516 if (ev) 942 if (ev)
517 ev_feed_event (EV_A_ (W)w, ev); 943 ev_feed_event (EV_A_ (W)w, ev);
518 } 944 }
519} 945}
520 946
947/* do not submit kernel events for fds that have reify set */
948/* because that means they changed while we were polling for new events */
949inline_speed void
950fd_event (EV_P_ int fd, int revents)
951{
952 ANFD *anfd = anfds + fd;
953
954 if (expect_true (!anfd->reify))
955 fd_event_nocheck (EV_A_ fd, revents);
956}
957
521void 958void
522ev_feed_fd_event (EV_P_ int fd, int revents) 959ev_feed_fd_event (EV_P_ int fd, int revents)
523{ 960{
524 if (fd >= 0 && fd < anfdmax) 961 if (fd >= 0 && fd < anfdmax)
525 fd_event (EV_A_ fd, revents); 962 fd_event_nocheck (EV_A_ fd, revents);
526} 963}
527 964
528void inline_size 965/* make sure the external fd watch events are in-sync */
966/* with the kernel/libev internal state */
967inline_size void
529fd_reify (EV_P) 968fd_reify (EV_P)
530{ 969{
531 int i; 970 int i;
532 971
533 for (i = 0; i < fdchangecnt; ++i) 972 for (i = 0; i < fdchangecnt; ++i)
534 { 973 {
535 int fd = fdchanges [i]; 974 int fd = fdchanges [i];
536 ANFD *anfd = anfds + fd; 975 ANFD *anfd = anfds + fd;
537 ev_io *w; 976 ev_io *w;
538 977
539 unsigned char events = 0; 978 unsigned char o_events = anfd->events;
979 unsigned char o_reify = anfd->reify;
540 980
541 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 981 anfd->reify = 0;
542 events |= (unsigned char)w->events;
543 982
544#if EV_SELECT_IS_WINSOCKET 983#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
545 if (events) 984 if (o_reify & EV__IOFDSET)
546 { 985 {
547 unsigned long argp; 986 unsigned long arg;
548 anfd->handle = _get_osfhandle (fd); 987 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
549 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); 988 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
989 printf ("oi %d %x\n", fd, anfd->handle);//D
550 } 990 }
551#endif 991#endif
552 992
993 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
553 { 994 {
554 unsigned char o_events = anfd->events;
555 unsigned char o_reify = anfd->reify;
556
557 anfd->reify = 0;
558 anfd->events = events; 995 anfd->events = 0;
559 996
560 if (o_events != events || o_reify & EV_IOFDSET) 997 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
998 anfd->events |= (unsigned char)w->events;
999
1000 if (o_events != anfd->events)
1001 o_reify = EV__IOFDSET; /* actually |= */
1002 }
1003
1004 if (o_reify & EV__IOFDSET)
561 backend_modify (EV_A_ fd, o_events, events); 1005 backend_modify (EV_A_ fd, o_events, anfd->events);
562 }
563 } 1006 }
564 1007
565 fdchangecnt = 0; 1008 fdchangecnt = 0;
566} 1009}
567 1010
568void inline_size 1011/* something about the given fd changed */
1012inline_size void
569fd_change (EV_P_ int fd, int flags) 1013fd_change (EV_P_ int fd, int flags)
570{ 1014{
571 unsigned char reify = anfds [fd].reify; 1015 unsigned char reify = anfds [fd].reify;
572 anfds [fd].reify |= flags; 1016 anfds [fd].reify |= flags;
573 1017
… …
577 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 1021 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
578 fdchanges [fdchangecnt - 1] = fd; 1022 fdchanges [fdchangecnt - 1] = fd;
579 } 1023 }
580} 1024}
581 1025
582void inline_speed 1026/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1027inline_speed void
583fd_kill (EV_P_ int fd) 1028fd_kill (EV_P_ int fd)
584{ 1029{
585 ev_io *w; 1030 ev_io *w;
586 1031
587 while ((w = (ev_io *)anfds [fd].head)) 1032 while ((w = (ev_io *)anfds [fd].head))
… …
589 ev_io_stop (EV_A_ w); 1034 ev_io_stop (EV_A_ w);
590 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1035 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
591 } 1036 }
592} 1037}
593 1038
594int inline_size 1039/* check whether the given fd is actually valid, for error recovery */
1040inline_size int
595fd_valid (int fd) 1041fd_valid (int fd)
596{ 1042{
597#ifdef _WIN32 1043#ifdef _WIN32
598 return _get_osfhandle (fd) != -1; 1044 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
599#else 1045#else
600 return fcntl (fd, F_GETFD) != -1; 1046 return fcntl (fd, F_GETFD) != -1;
601#endif 1047#endif
602} 1048}
603 1049
… …
607{ 1053{
608 int fd; 1054 int fd;
609 1055
610 for (fd = 0; fd < anfdmax; ++fd) 1056 for (fd = 0; fd < anfdmax; ++fd)
611 if (anfds [fd].events) 1057 if (anfds [fd].events)
612 if (!fd_valid (fd) == -1 && errno == EBADF) 1058 if (!fd_valid (fd) && errno == EBADF)
613 fd_kill (EV_A_ fd); 1059 fd_kill (EV_A_ fd);
614} 1060}
615 1061
616/* called on ENOMEM in select/poll to kill some fds and retry */ 1062/* called on ENOMEM in select/poll to kill some fds and retry */
617static void noinline 1063static void noinline
… …
621 1067
622 for (fd = anfdmax; fd--; ) 1068 for (fd = anfdmax; fd--; )
623 if (anfds [fd].events) 1069 if (anfds [fd].events)
624 { 1070 {
625 fd_kill (EV_A_ fd); 1071 fd_kill (EV_A_ fd);
626 return; 1072 break;
627 } 1073 }
628} 1074}
629 1075
630/* usually called after fork if backend needs to re-arm all fds from scratch */ 1076/* usually called after fork if backend needs to re-arm all fds from scratch */
631static void noinline 1077static void noinline
… …
635 1081
636 for (fd = 0; fd < anfdmax; ++fd) 1082 for (fd = 0; fd < anfdmax; ++fd)
637 if (anfds [fd].events) 1083 if (anfds [fd].events)
638 { 1084 {
639 anfds [fd].events = 0; 1085 anfds [fd].events = 0;
1086 anfds [fd].emask = 0;
640 fd_change (EV_A_ fd, EV_IOFDSET | 1); 1087 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
641 } 1088 }
642} 1089}
643 1090
644/*****************************************************************************/ 1091/* used to prepare libev internal fd's */
645 1092/* this is not fork-safe */
646void inline_speed 1093inline_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) 1094fd_intern (int fd)
782{ 1095{
783#ifdef _WIN32 1096#ifdef _WIN32
784 int arg = 1; 1097 unsigned long arg = 1;
785 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 1098 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
786#else 1099#else
787 fcntl (fd, F_SETFD, FD_CLOEXEC); 1100 fcntl (fd, F_SETFD, FD_CLOEXEC);
788 fcntl (fd, F_SETFL, O_NONBLOCK); 1101 fcntl (fd, F_SETFL, O_NONBLOCK);
789#endif 1102#endif
790} 1103}
791 1104
1105/*****************************************************************************/
1106
1107/*
1108 * the heap functions want a real array index. array index 0 is guaranteed to not
1109 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
1110 * the branching factor of the d-tree.
1111 */
1112
1113/*
1114 * at the moment we allow libev the luxury of two heaps,
1115 * a small-code-size 2-heap one and a ~1.5kb larger 4-heap
1116 * which is more cache-efficient.
1117 * the difference is about 5% with 50000+ watchers.
1118 */
1119#if EV_USE_4HEAP
1120
1121#define DHEAP 4
1122#define HEAP0 (DHEAP - 1) /* index of first element in heap */
1123#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
1124#define UPHEAP_DONE(p,k) ((p) == (k))
1125
1126/* away from the root */
1127inline_speed void
1128downheap (ANHE *heap, int N, int k)
1129{
1130 ANHE he = heap [k];
1131 ANHE *E = heap + N + HEAP0;
1132
1133 for (;;)
1134 {
1135 ev_tstamp minat;
1136 ANHE *minpos;
1137 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
1138
1139 /* find minimum child */
1140 if (expect_true (pos + DHEAP - 1 < E))
1141 {
1142 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1143 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1144 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1145 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1146 }
1147 else if (pos < E)
1148 {
1149 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1150 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1151 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1152 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1153 }
1154 else
1155 break;
1156
1157 if (ANHE_at (he) <= minat)
1158 break;
1159
1160 heap [k] = *minpos;
1161 ev_active (ANHE_w (*minpos)) = k;
1162
1163 k = minpos - heap;
1164 }
1165
1166 heap [k] = he;
1167 ev_active (ANHE_w (he)) = k;
1168}
1169
1170#else /* 4HEAP */
1171
1172#define HEAP0 1
1173#define HPARENT(k) ((k) >> 1)
1174#define UPHEAP_DONE(p,k) (!(p))
1175
1176/* away from the root */
1177inline_speed void
1178downheap (ANHE *heap, int N, int k)
1179{
1180 ANHE he = heap [k];
1181
1182 for (;;)
1183 {
1184 int c = k << 1;
1185
1186 if (c >= N + HEAP0)
1187 break;
1188
1189 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
1190 ? 1 : 0;
1191
1192 if (ANHE_at (he) <= ANHE_at (heap [c]))
1193 break;
1194
1195 heap [k] = heap [c];
1196 ev_active (ANHE_w (heap [k])) = k;
1197
1198 k = c;
1199 }
1200
1201 heap [k] = he;
1202 ev_active (ANHE_w (he)) = k;
1203}
1204#endif
1205
1206/* towards the root */
1207inline_speed void
1208upheap (ANHE *heap, int k)
1209{
1210 ANHE he = heap [k];
1211
1212 for (;;)
1213 {
1214 int p = HPARENT (k);
1215
1216 if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
1217 break;
1218
1219 heap [k] = heap [p];
1220 ev_active (ANHE_w (heap [k])) = k;
1221 k = p;
1222 }
1223
1224 heap [k] = he;
1225 ev_active (ANHE_w (he)) = k;
1226}
1227
1228/* move an element suitably so it is in a correct place */
1229inline_size void
1230adjustheap (ANHE *heap, int N, int k)
1231{
1232 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1233 upheap (heap, k);
1234 else
1235 downheap (heap, N, k);
1236}
1237
1238/* rebuild the heap: this function is used only once and executed rarely */
1239inline_size void
1240reheap (ANHE *heap, int N)
1241{
1242 int i;
1243
1244 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
1245 /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
1246 for (i = 0; i < N; ++i)
1247 upheap (heap, i + HEAP0);
1248}
1249
1250/*****************************************************************************/
1251
1252/* associate signal watchers to a signal signal */
1253typedef struct
1254{
1255 EV_ATOMIC_T pending;
1256#if EV_MULTIPLICITY
1257 EV_P;
1258#endif
1259 WL head;
1260} ANSIG;
1261
1262static ANSIG signals [EV_NSIG - 1];
1263
1264/*****************************************************************************/
1265
1266#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1267
792static void noinline 1268static void noinline
793siginit (EV_P) 1269evpipe_init (EV_P)
794{ 1270{
1271 if (!ev_is_active (&pipe_w))
1272 {
1273# if EV_USE_EVENTFD
1274 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1275 if (evfd < 0 && errno == EINVAL)
1276 evfd = eventfd (0, 0);
1277
1278 if (evfd >= 0)
1279 {
1280 evpipe [0] = -1;
1281 fd_intern (evfd); /* doing it twice doesn't hurt */
1282 ev_io_set (&pipe_w, evfd, EV_READ);
1283 }
1284 else
1285# endif
1286 {
1287 while (pipe (evpipe))
1288 ev_syserr ("(libev) error creating signal/async pipe");
1289
795 fd_intern (sigpipe [0]); 1290 fd_intern (evpipe [0]);
796 fd_intern (sigpipe [1]); 1291 fd_intern (evpipe [1]);
1292 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1293 }
797 1294
798 ev_io_set (&sigev, sigpipe [0], EV_READ);
799 ev_io_start (EV_A_ &sigev); 1295 ev_io_start (EV_A_ &pipe_w);
800 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1296 ev_unref (EV_A); /* watcher should not keep loop alive */
1297 }
1298}
1299
1300inline_size void
1301evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1302{
1303 if (!*flag)
1304 {
1305 int old_errno = errno; /* save errno because write might clobber it */
1306 char dummy;
1307
1308 *flag = 1;
1309
1310#if EV_USE_EVENTFD
1311 if (evfd >= 0)
1312 {
1313 uint64_t counter = 1;
1314 write (evfd, &counter, sizeof (uint64_t));
1315 }
1316 else
1317#endif
1318 /* win32 people keep sending patches that change this write() to send() */
1319 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1320 /* so when you think this write should be a send instead, please find out */
1321 /* where your send() is from - it's definitely not the microsoft send, and */
1322 /* tell me. thank you. */
1323 write (evpipe [1], &dummy, 1);
1324
1325 errno = old_errno;
1326 }
1327}
1328
1329/* called whenever the libev signal pipe */
1330/* got some events (signal, async) */
1331static void
1332pipecb (EV_P_ ev_io *iow, int revents)
1333{
1334 int i;
1335
1336#if EV_USE_EVENTFD
1337 if (evfd >= 0)
1338 {
1339 uint64_t counter;
1340 read (evfd, &counter, sizeof (uint64_t));
1341 }
1342 else
1343#endif
1344 {
1345 char dummy;
1346 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1347 read (evpipe [0], &dummy, 1);
1348 }
1349
1350 if (sig_pending)
1351 {
1352 sig_pending = 0;
1353
1354 for (i = EV_NSIG - 1; i--; )
1355 if (expect_false (signals [i].pending))
1356 ev_feed_signal_event (EV_A_ i + 1);
1357 }
1358
1359#if EV_ASYNC_ENABLE
1360 if (async_pending)
1361 {
1362 async_pending = 0;
1363
1364 for (i = asynccnt; i--; )
1365 if (asyncs [i]->sent)
1366 {
1367 asyncs [i]->sent = 0;
1368 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1369 }
1370 }
1371#endif
801} 1372}
802 1373
803/*****************************************************************************/ 1374/*****************************************************************************/
804 1375
1376static void
1377ev_sighandler (int signum)
1378{
1379#if EV_MULTIPLICITY
1380 EV_P = signals [signum - 1].loop;
1381#endif
1382
1383#ifdef _WIN32
1384 signal (signum, ev_sighandler);
1385#endif
1386
1387 signals [signum - 1].pending = 1;
1388 evpipe_write (EV_A_ &sig_pending);
1389}
1390
1391void noinline
1392ev_feed_signal_event (EV_P_ int signum)
1393{
1394 WL w;
1395
1396 if (expect_false (signum <= 0 || signum > EV_NSIG))
1397 return;
1398
1399 --signum;
1400
1401#if EV_MULTIPLICITY
1402 /* it is permissible to try to feed a signal to the wrong loop */
1403 /* or, likely more useful, feeding a signal nobody is waiting for */
1404
1405 if (expect_false (signals [signum].loop != EV_A))
1406 return;
1407#endif
1408
1409 signals [signum].pending = 0;
1410
1411 for (w = signals [signum].head; w; w = w->next)
1412 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1413}
1414
1415#if EV_USE_SIGNALFD
1416static void
1417sigfdcb (EV_P_ ev_io *iow, int revents)
1418{
1419 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1420
1421 for (;;)
1422 {
1423 ssize_t res = read (sigfd, si, sizeof (si));
1424
1425 /* not ISO-C, as res might be -1, but works with SuS */
1426 for (sip = si; (char *)sip < (char *)si + res; ++sip)
1427 ev_feed_signal_event (EV_A_ sip->ssi_signo);
1428
1429 if (res < (ssize_t)sizeof (si))
1430 break;
1431 }
1432}
1433#endif
1434
1435#endif
1436
1437/*****************************************************************************/
1438
1439#if EV_CHILD_ENABLE
805static WL childs [EV_PID_HASHSIZE]; 1440static WL childs [EV_PID_HASHSIZE];
806 1441
807#ifndef _WIN32
808
809static ev_signal childev; 1442static ev_signal childev;
810 1443
811void inline_speed 1444#ifndef WIFCONTINUED
1445# define WIFCONTINUED(status) 0
1446#endif
1447
1448/* handle a single child status event */
1449inline_speed void
812child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status) 1450child_reap (EV_P_ int chain, int pid, int status)
813{ 1451{
814 ev_child *w; 1452 ev_child *w;
1453 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
815 1454
816 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1455 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1456 {
817 if (w->pid == pid || !w->pid) 1457 if ((w->pid == pid || !w->pid)
1458 && (!traced || (w->flags & 1)))
818 { 1459 {
819 ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */ 1460 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; 1461 w->rpid = pid;
821 w->rstatus = status; 1462 w->rstatus = status;
822 ev_feed_event (EV_A_ (W)w, EV_CHILD); 1463 ev_feed_event (EV_A_ (W)w, EV_CHILD);
823 } 1464 }
1465 }
824} 1466}
825 1467
826#ifndef WCONTINUED 1468#ifndef WCONTINUED
827# define WCONTINUED 0 1469# define WCONTINUED 0
828#endif 1470#endif
829 1471
1472/* called on sigchld etc., calls waitpid */
830static void 1473static void
831childcb (EV_P_ ev_signal *sw, int revents) 1474childcb (EV_P_ ev_signal *sw, int revents)
832{ 1475{
833 int pid, status; 1476 int pid, status;
834 1477
… …
837 if (!WCONTINUED 1480 if (!WCONTINUED
838 || errno != EINVAL 1481 || errno != EINVAL
839 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED))) 1482 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
840 return; 1483 return;
841 1484
842 /* make sure we are called again until all childs have been reaped */ 1485 /* 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 */ 1486 /* 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); 1487 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
845 1488
846 child_reap (EV_A_ sw, pid, pid, status); 1489 child_reap (EV_A_ pid, pid, status);
847 if (EV_PID_HASHSIZE > 1) 1490 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 */ 1491 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
849} 1492}
850 1493
851#endif 1494#endif
852 1495
853/*****************************************************************************/ 1496/*****************************************************************************/
854 1497
1498#if EV_USE_IOCP
1499# include "ev_iocp.c"
1500#endif
855#if EV_USE_PORT 1501#if EV_USE_PORT
856# include "ev_port.c" 1502# include "ev_port.c"
857#endif 1503#endif
858#if EV_USE_KQUEUE 1504#if EV_USE_KQUEUE
859# include "ev_kqueue.c" 1505# include "ev_kqueue.c"
… …
915 /* kqueue is borked on everything but netbsd apparently */ 1561 /* kqueue is borked on everything but netbsd apparently */
916 /* it usually doesn't work correctly on anything but sockets and pipes */ 1562 /* it usually doesn't work correctly on anything but sockets and pipes */
917 flags &= ~EVBACKEND_KQUEUE; 1563 flags &= ~EVBACKEND_KQUEUE;
918#endif 1564#endif
919#ifdef __APPLE__ 1565#ifdef __APPLE__
920 // flags &= ~EVBACKEND_KQUEUE; for documentation 1566 /* only select works correctly on that "unix-certified" platform */
921 flags &= ~EVBACKEND_POLL; 1567 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1568 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1569#endif
1570#ifdef __FreeBSD__
1571 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
922#endif 1572#endif
923 1573
924 return flags; 1574 return flags;
925} 1575}
926 1576
927unsigned int 1577unsigned int
928ev_embeddable_backends (void) 1578ev_embeddable_backends (void)
929{ 1579{
930 return EVBACKEND_EPOLL 1580 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
931 | EVBACKEND_KQUEUE 1581
932 | EVBACKEND_PORT; 1582 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1583 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1584 flags &= ~EVBACKEND_EPOLL;
1585
1586 return flags;
933} 1587}
934 1588
935unsigned int 1589unsigned int
936ev_backend (EV_P) 1590ev_backend (EV_P)
937{ 1591{
938 return backend; 1592 return backend;
939} 1593}
940 1594
1595#if EV_FEATURE_API
941unsigned int 1596unsigned int
942ev_loop_count (EV_P) 1597ev_iteration (EV_P)
943{ 1598{
944 return loop_count; 1599 return loop_count;
945} 1600}
946 1601
1602unsigned int
1603ev_depth (EV_P)
1604{
1605 return loop_depth;
1606}
1607
1608void
1609ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1610{
1611 io_blocktime = interval;
1612}
1613
1614void
1615ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1616{
1617 timeout_blocktime = interval;
1618}
1619
1620void
1621ev_set_userdata (EV_P_ void *data)
1622{
1623 userdata = data;
1624}
1625
1626void *
1627ev_userdata (EV_P)
1628{
1629 return userdata;
1630}
1631
1632void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1633{
1634 invoke_cb = invoke_pending_cb;
1635}
1636
1637void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1638{
1639 release_cb = release;
1640 acquire_cb = acquire;
1641}
1642#endif
1643
1644/* initialise a loop structure, must be zero-initialised */
947static void noinline 1645static void noinline
948loop_init (EV_P_ unsigned int flags) 1646loop_init (EV_P_ unsigned int flags)
949{ 1647{
950 if (!backend) 1648 if (!backend)
951 { 1649 {
1650#if EV_USE_REALTIME
1651 if (!have_realtime)
1652 {
1653 struct timespec ts;
1654
1655 if (!clock_gettime (CLOCK_REALTIME, &ts))
1656 have_realtime = 1;
1657 }
1658#endif
1659
952#if EV_USE_MONOTONIC 1660#if EV_USE_MONOTONIC
1661 if (!have_monotonic)
953 { 1662 {
954 struct timespec ts; 1663 struct timespec ts;
1664
955 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1665 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
956 have_monotonic = 1; 1666 have_monotonic = 1;
957 } 1667 }
958#endif 1668#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 1669
965 /* pid check not overridable via env */ 1670 /* pid check not overridable via env */
966#ifndef _WIN32 1671#ifndef _WIN32
967 if (flags & EVFLAG_FORKCHECK) 1672 if (flags & EVFLAG_FORKCHECK)
968 curpid = getpid (); 1673 curpid = getpid ();
… …
971 if (!(flags & EVFLAG_NOENV) 1676 if (!(flags & EVFLAG_NOENV)
972 && !enable_secure () 1677 && !enable_secure ()
973 && getenv ("LIBEV_FLAGS")) 1678 && getenv ("LIBEV_FLAGS"))
974 flags = atoi (getenv ("LIBEV_FLAGS")); 1679 flags = atoi (getenv ("LIBEV_FLAGS"));
975 1680
1681 ev_rt_now = ev_time ();
1682 mn_now = get_clock ();
1683 now_floor = mn_now;
1684 rtmn_diff = ev_rt_now - mn_now;
1685#if EV_FEATURE_API
1686 invoke_cb = ev_invoke_pending;
1687#endif
1688
1689 io_blocktime = 0.;
1690 timeout_blocktime = 0.;
1691 backend = 0;
1692 backend_fd = -1;
1693 sig_pending = 0;
1694#if EV_ASYNC_ENABLE
1695 async_pending = 0;
1696#endif
1697#if EV_USE_INOTIFY
1698 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1699#endif
1700#if EV_USE_SIGNALFD
1701 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1702#endif
1703
976 if (!(flags & 0x0000ffffUL)) 1704 if (!(flags & 0x0000ffffU))
977 flags |= ev_recommended_backends (); 1705 flags |= ev_recommended_backends ();
978 1706
979 backend = 0;
980 backend_fd = -1;
981#if EV_USE_INOTIFY 1707#if EV_USE_IOCP
982 fs_fd = -2; 1708 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
983#endif 1709#endif
984
985#if EV_USE_PORT 1710#if EV_USE_PORT
986 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1711 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
987#endif 1712#endif
988#if EV_USE_KQUEUE 1713#if EV_USE_KQUEUE
989 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 1714 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
996#endif 1721#endif
997#if EV_USE_SELECT 1722#if EV_USE_SELECT
998 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1723 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
999#endif 1724#endif
1000 1725
1726 ev_prepare_init (&pending_w, pendingcb);
1727
1728#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1001 ev_init (&sigev, sigcb); 1729 ev_init (&pipe_w, pipecb);
1002 ev_set_priority (&sigev, EV_MAXPRI); 1730 ev_set_priority (&pipe_w, EV_MAXPRI);
1731#endif
1003 } 1732 }
1004} 1733}
1005 1734
1006static void noinline 1735/* free up a loop structure */
1736void
1007loop_destroy (EV_P) 1737ev_loop_destroy (EV_P)
1008{ 1738{
1009 int i; 1739 int i;
1740
1741 /* mimic free (0) */
1742 if (!EV_A)
1743 return;
1744
1745#if EV_CLEANUP_ENABLE
1746 /* queue cleanup watchers (and execute them) */
1747 if (expect_false (cleanupcnt))
1748 {
1749 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
1750 EV_INVOKE_PENDING;
1751 }
1752#endif
1753
1754#if EV_CHILD_ENABLE
1755 if (ev_is_active (&childev))
1756 {
1757 ev_ref (EV_A); /* child watcher */
1758 ev_signal_stop (EV_A_ &childev);
1759 }
1760#endif
1761
1762 if (ev_is_active (&pipe_w))
1763 {
1764 /*ev_ref (EV_A);*/
1765 /*ev_io_stop (EV_A_ &pipe_w);*/
1766
1767#if EV_USE_EVENTFD
1768 if (evfd >= 0)
1769 close (evfd);
1770#endif
1771
1772 if (evpipe [0] >= 0)
1773 {
1774 EV_WIN32_CLOSE_FD (evpipe [0]);
1775 EV_WIN32_CLOSE_FD (evpipe [1]);
1776 }
1777 }
1778
1779#if EV_USE_SIGNALFD
1780 if (ev_is_active (&sigfd_w))
1781 close (sigfd);
1782#endif
1010 1783
1011#if EV_USE_INOTIFY 1784#if EV_USE_INOTIFY
1012 if (fs_fd >= 0) 1785 if (fs_fd >= 0)
1013 close (fs_fd); 1786 close (fs_fd);
1014#endif 1787#endif
1015 1788
1016 if (backend_fd >= 0) 1789 if (backend_fd >= 0)
1017 close (backend_fd); 1790 close (backend_fd);
1018 1791
1792#if EV_USE_IOCP
1793 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
1794#endif
1019#if EV_USE_PORT 1795#if EV_USE_PORT
1020 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 1796 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1021#endif 1797#endif
1022#if EV_USE_KQUEUE 1798#if EV_USE_KQUEUE
1023 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 1799 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1038#if EV_IDLE_ENABLE 1814#if EV_IDLE_ENABLE
1039 array_free (idle, [i]); 1815 array_free (idle, [i]);
1040#endif 1816#endif
1041 } 1817 }
1042 1818
1043 ev_free (anfds); anfdmax = 0; 1819 ev_free (anfds); anfds = 0; anfdmax = 0;
1044 1820
1045 /* have to use the microsoft-never-gets-it-right macro */ 1821 /* have to use the microsoft-never-gets-it-right macro */
1822 array_free (rfeed, EMPTY);
1046 array_free (fdchange, EMPTY); 1823 array_free (fdchange, EMPTY);
1047 array_free (timer, EMPTY); 1824 array_free (timer, EMPTY);
1048#if EV_PERIODIC_ENABLE 1825#if EV_PERIODIC_ENABLE
1049 array_free (periodic, EMPTY); 1826 array_free (periodic, EMPTY);
1050#endif 1827#endif
1828#if EV_FORK_ENABLE
1829 array_free (fork, EMPTY);
1830#endif
1831#if EV_CLEANUP_ENABLE
1832 array_free (cleanup, EMPTY);
1833#endif
1051 array_free (prepare, EMPTY); 1834 array_free (prepare, EMPTY);
1052 array_free (check, EMPTY); 1835 array_free (check, EMPTY);
1836#if EV_ASYNC_ENABLE
1053 array_free (fork, EMPTY); 1837 array_free (async, EMPTY);
1838#endif
1054 1839
1055 backend = 0; 1840 backend = 0;
1056}
1057 1841
1842#if EV_MULTIPLICITY
1843 if (ev_is_default_loop (EV_A))
1844#endif
1845 ev_default_loop_ptr = 0;
1846#if EV_MULTIPLICITY
1847 else
1848 ev_free (EV_A);
1849#endif
1850}
1851
1852#if EV_USE_INOTIFY
1058void inline_size infy_fork (EV_P); 1853inline_size void infy_fork (EV_P);
1854#endif
1059 1855
1060void inline_size 1856inline_size void
1061loop_fork (EV_P) 1857loop_fork (EV_P)
1062{ 1858{
1063#if EV_USE_PORT 1859#if EV_USE_PORT
1064 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1860 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1065#endif 1861#endif
… …
1071#endif 1867#endif
1072#if EV_USE_INOTIFY 1868#if EV_USE_INOTIFY
1073 infy_fork (EV_A); 1869 infy_fork (EV_A);
1074#endif 1870#endif
1075 1871
1076 if (ev_is_active (&sigev)) 1872 if (ev_is_active (&pipe_w))
1077 { 1873 {
1078 /* default loop */ 1874 /* this "locks" the handlers against writing to the pipe */
1875 /* while we modify the fd vars */
1876 sig_pending = 1;
1877#if EV_ASYNC_ENABLE
1878 async_pending = 1;
1879#endif
1079 1880
1080 ev_ref (EV_A); 1881 ev_ref (EV_A);
1081 ev_io_stop (EV_A_ &sigev); 1882 ev_io_stop (EV_A_ &pipe_w);
1082 close (sigpipe [0]);
1083 close (sigpipe [1]);
1084 1883
1085 while (pipe (sigpipe)) 1884#if EV_USE_EVENTFD
1086 syserr ("(libev) error creating pipe"); 1885 if (evfd >= 0)
1886 close (evfd);
1887#endif
1087 1888
1889 if (evpipe [0] >= 0)
1890 {
1891 EV_WIN32_CLOSE_FD (evpipe [0]);
1892 EV_WIN32_CLOSE_FD (evpipe [1]);
1893 }
1894
1895#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1088 siginit (EV_A); 1896 evpipe_init (EV_A);
1897 /* now iterate over everything, in case we missed something */
1898 pipecb (EV_A_ &pipe_w, EV_READ);
1899#endif
1089 } 1900 }
1090 1901
1091 postfork = 0; 1902 postfork = 0;
1092} 1903}
1904
1905#if EV_MULTIPLICITY
1906
1907struct ev_loop *
1908ev_loop_new (unsigned int flags)
1909{
1910 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1911
1912 memset (EV_A, 0, sizeof (struct ev_loop));
1913 loop_init (EV_A_ flags);
1914
1915 if (ev_backend (EV_A))
1916 return EV_A;
1917
1918 ev_free (EV_A);
1919 return 0;
1920}
1921
1922#endif /* multiplicity */
1923
1924#if EV_VERIFY
1925static void noinline
1926verify_watcher (EV_P_ W w)
1927{
1928 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1929
1930 if (w->pending)
1931 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1932}
1933
1934static void noinline
1935verify_heap (EV_P_ ANHE *heap, int N)
1936{
1937 int i;
1938
1939 for (i = HEAP0; i < N + HEAP0; ++i)
1940 {
1941 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1942 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1943 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1944
1945 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1946 }
1947}
1948
1949static void noinline
1950array_verify (EV_P_ W *ws, int cnt)
1951{
1952 while (cnt--)
1953 {
1954 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1955 verify_watcher (EV_A_ ws [cnt]);
1956 }
1957}
1958#endif
1959
1960#if EV_FEATURE_API
1961void
1962ev_verify (EV_P)
1963{
1964#if EV_VERIFY
1965 int i;
1966 WL w;
1967
1968 assert (activecnt >= -1);
1969
1970 assert (fdchangemax >= fdchangecnt);
1971 for (i = 0; i < fdchangecnt; ++i)
1972 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1973
1974 assert (anfdmax >= 0);
1975 for (i = 0; i < anfdmax; ++i)
1976 for (w = anfds [i].head; w; w = w->next)
1977 {
1978 verify_watcher (EV_A_ (W)w);
1979 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1980 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1981 }
1982
1983 assert (timermax >= timercnt);
1984 verify_heap (EV_A_ timers, timercnt);
1985
1986#if EV_PERIODIC_ENABLE
1987 assert (periodicmax >= periodiccnt);
1988 verify_heap (EV_A_ periodics, periodiccnt);
1989#endif
1990
1991 for (i = NUMPRI; i--; )
1992 {
1993 assert (pendingmax [i] >= pendingcnt [i]);
1994#if EV_IDLE_ENABLE
1995 assert (idleall >= 0);
1996 assert (idlemax [i] >= idlecnt [i]);
1997 array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
1998#endif
1999 }
2000
2001#if EV_FORK_ENABLE
2002 assert (forkmax >= forkcnt);
2003 array_verify (EV_A_ (W *)forks, forkcnt);
2004#endif
2005
2006#if EV_CLEANUP_ENABLE
2007 assert (cleanupmax >= cleanupcnt);
2008 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2009#endif
2010
2011#if EV_ASYNC_ENABLE
2012 assert (asyncmax >= asynccnt);
2013 array_verify (EV_A_ (W *)asyncs, asynccnt);
2014#endif
2015
2016#if EV_PREPARE_ENABLE
2017 assert (preparemax >= preparecnt);
2018 array_verify (EV_A_ (W *)prepares, preparecnt);
2019#endif
2020
2021#if EV_CHECK_ENABLE
2022 assert (checkmax >= checkcnt);
2023 array_verify (EV_A_ (W *)checks, checkcnt);
2024#endif
2025
2026# if 0
2027#if EV_CHILD_ENABLE
2028 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
2029 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2030#endif
2031# endif
2032#endif
2033}
2034#endif
1093 2035
1094#if EV_MULTIPLICITY 2036#if EV_MULTIPLICITY
1095struct ev_loop * 2037struct ev_loop *
1096ev_loop_new (unsigned int flags)
1097{
1098 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1099
1100 memset (loop, 0, sizeof (struct ev_loop));
1101
1102 loop_init (EV_A_ flags);
1103
1104 if (ev_backend (EV_A))
1105 return loop;
1106
1107 return 0;
1108}
1109
1110void
1111ev_loop_destroy (EV_P)
1112{
1113 loop_destroy (EV_A);
1114 ev_free (loop);
1115}
1116
1117void
1118ev_loop_fork (EV_P)
1119{
1120 postfork = 1;
1121}
1122
1123#endif
1124
1125#if EV_MULTIPLICITY
1126struct ev_loop *
1127ev_default_loop_init (unsigned int flags)
1128#else 2038#else
1129int 2039int
2040#endif
1130ev_default_loop (unsigned int flags) 2041ev_default_loop (unsigned int flags)
1131#endif
1132{ 2042{
1133 if (sigpipe [0] == sigpipe [1])
1134 if (pipe (sigpipe))
1135 return 0;
1136
1137 if (!ev_default_loop_ptr) 2043 if (!ev_default_loop_ptr)
1138 { 2044 {
1139#if EV_MULTIPLICITY 2045#if EV_MULTIPLICITY
1140 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2046 EV_P = ev_default_loop_ptr = &default_loop_struct;
1141#else 2047#else
1142 ev_default_loop_ptr = 1; 2048 ev_default_loop_ptr = 1;
1143#endif 2049#endif
1144 2050
1145 loop_init (EV_A_ flags); 2051 loop_init (EV_A_ flags);
1146 2052
1147 if (ev_backend (EV_A)) 2053 if (ev_backend (EV_A))
1148 { 2054 {
1149 siginit (EV_A); 2055#if EV_CHILD_ENABLE
1150
1151#ifndef _WIN32
1152 ev_signal_init (&childev, childcb, SIGCHLD); 2056 ev_signal_init (&childev, childcb, SIGCHLD);
1153 ev_set_priority (&childev, EV_MAXPRI); 2057 ev_set_priority (&childev, EV_MAXPRI);
1154 ev_signal_start (EV_A_ &childev); 2058 ev_signal_start (EV_A_ &childev);
1155 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2059 ev_unref (EV_A); /* child watcher should not keep loop alive */
1156#endif 2060#endif
… …
1161 2065
1162 return ev_default_loop_ptr; 2066 return ev_default_loop_ptr;
1163} 2067}
1164 2068
1165void 2069void
1166ev_default_destroy (void) 2070ev_loop_fork (EV_P)
1167{ 2071{
1168#if EV_MULTIPLICITY 2072 postfork = 1; /* must be in line with ev_default_fork */
1169 struct ev_loop *loop = ev_default_loop_ptr;
1170#endif
1171
1172#ifndef _WIN32
1173 ev_ref (EV_A); /* child watcher */
1174 ev_signal_stop (EV_A_ &childev);
1175#endif
1176
1177 ev_ref (EV_A); /* signal watcher */
1178 ev_io_stop (EV_A_ &sigev);
1179
1180 close (sigpipe [0]); sigpipe [0] = 0;
1181 close (sigpipe [1]); sigpipe [1] = 0;
1182
1183 loop_destroy (EV_A);
1184}
1185
1186void
1187ev_default_fork (void)
1188{
1189#if EV_MULTIPLICITY
1190 struct ev_loop *loop = ev_default_loop_ptr;
1191#endif
1192
1193 if (backend)
1194 postfork = 1;
1195} 2073}
1196 2074
1197/*****************************************************************************/ 2075/*****************************************************************************/
1198 2076
1199void 2077void
1200ev_invoke (EV_P_ void *w, int revents) 2078ev_invoke (EV_P_ void *w, int revents)
1201{ 2079{
1202 EV_CB_INVOKE ((W)w, revents); 2080 EV_CB_INVOKE ((W)w, revents);
1203} 2081}
1204 2082
1205void inline_speed 2083unsigned int
1206call_pending (EV_P) 2084ev_pending_count (EV_P)
2085{
2086 int pri;
2087 unsigned int count = 0;
2088
2089 for (pri = NUMPRI; pri--; )
2090 count += pendingcnt [pri];
2091
2092 return count;
2093}
2094
2095void noinline
2096ev_invoke_pending (EV_P)
1207{ 2097{
1208 int pri; 2098 int pri;
1209 2099
1210 for (pri = NUMPRI; pri--; ) 2100 for (pri = NUMPRI; pri--; )
1211 while (pendingcnt [pri]) 2101 while (pendingcnt [pri])
1212 { 2102 {
1213 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2103 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1214 2104
1215 if (expect_true (p->w))
1216 {
1217 /*assert (("non-pending watcher on pending list", p->w->pending));*/ 2105 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2106 /* ^ this is no longer true, as pending_w could be here */
1218 2107
1219 p->w->pending = 0; 2108 p->w->pending = 0;
1220 EV_CB_INVOKE (p->w, p->events); 2109 EV_CB_INVOKE (p->w, p->events);
1221 } 2110 EV_FREQUENT_CHECK;
1222 } 2111 }
1223} 2112}
1224 2113
1225void inline_size
1226timers_reify (EV_P)
1227{
1228 while (timercnt && ((WT)timers [0])->at <= mn_now)
1229 {
1230 ev_timer *w = (ev_timer *)timers [0];
1231
1232 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1233
1234 /* first reschedule or stop timer */
1235 if (w->repeat)
1236 {
1237 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1238
1239 ((WT)w)->at += w->repeat;
1240 if (((WT)w)->at < mn_now)
1241 ((WT)w)->at = mn_now;
1242
1243 downheap (timers, timercnt, 0);
1244 }
1245 else
1246 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1247
1248 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1249 }
1250}
1251
1252#if EV_PERIODIC_ENABLE
1253void inline_size
1254periodics_reify (EV_P)
1255{
1256 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1257 {
1258 ev_periodic *w = (ev_periodic *)periodics [0];
1259
1260 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1261
1262 /* first reschedule or stop timer */
1263 if (w->reschedule_cb)
1264 {
1265 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1266 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1267 downheap (periodics, periodiccnt, 0);
1268 }
1269 else if (w->interval)
1270 {
1271 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1272 if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1273 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1274 downheap (periodics, periodiccnt, 0);
1275 }
1276 else
1277 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1278
1279 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1280 }
1281}
1282
1283static void noinline
1284periodics_reschedule (EV_P)
1285{
1286 int i;
1287
1288 /* adjust periodics after time jump */
1289 for (i = 0; i < periodiccnt; ++i)
1290 {
1291 ev_periodic *w = (ev_periodic *)periodics [i];
1292
1293 if (w->reschedule_cb)
1294 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1295 else if (w->interval)
1296 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1297 }
1298
1299 /* now rebuild the heap */
1300 for (i = periodiccnt >> 1; i--; )
1301 downheap (periodics, periodiccnt, i);
1302}
1303#endif
1304
1305#if EV_IDLE_ENABLE 2114#if EV_IDLE_ENABLE
1306void inline_size 2115/* make idle watchers pending. this handles the "call-idle */
2116/* only when higher priorities are idle" logic */
2117inline_size void
1307idle_reify (EV_P) 2118idle_reify (EV_P)
1308{ 2119{
1309 if (expect_false (idleall)) 2120 if (expect_false (idleall))
1310 { 2121 {
1311 int pri; 2122 int pri;
… …
1323 } 2134 }
1324 } 2135 }
1325} 2136}
1326#endif 2137#endif
1327 2138
1328void inline_speed 2139/* make timers pending */
2140inline_size void
2141timers_reify (EV_P)
2142{
2143 EV_FREQUENT_CHECK;
2144
2145 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
2146 {
2147 do
2148 {
2149 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
2150
2151 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
2152
2153 /* first reschedule or stop timer */
2154 if (w->repeat)
2155 {
2156 ev_at (w) += w->repeat;
2157 if (ev_at (w) < mn_now)
2158 ev_at (w) = mn_now;
2159
2160 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
2161
2162 ANHE_at_cache (timers [HEAP0]);
2163 downheap (timers, timercnt, HEAP0);
2164 }
2165 else
2166 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
2167
2168 EV_FREQUENT_CHECK;
2169 feed_reverse (EV_A_ (W)w);
2170 }
2171 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
2172
2173 feed_reverse_done (EV_A_ EV_TIMER);
2174 }
2175}
2176
2177#if EV_PERIODIC_ENABLE
2178/* make periodics pending */
2179inline_size void
2180periodics_reify (EV_P)
2181{
2182 EV_FREQUENT_CHECK;
2183
2184 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2185 {
2186 int feed_count = 0;
2187
2188 do
2189 {
2190 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2191
2192 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
2193
2194 /* first reschedule or stop timer */
2195 if (w->reschedule_cb)
2196 {
2197 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2198
2199 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
2200
2201 ANHE_at_cache (periodics [HEAP0]);
2202 downheap (periodics, periodiccnt, HEAP0);
2203 }
2204 else if (w->interval)
2205 {
2206 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2207 /* if next trigger time is not sufficiently in the future, put it there */
2208 /* this might happen because of floating point inexactness */
2209 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2210 {
2211 ev_at (w) += w->interval;
2212
2213 /* if interval is unreasonably low we might still have a time in the past */
2214 /* so correct this. this will make the periodic very inexact, but the user */
2215 /* has effectively asked to get triggered more often than possible */
2216 if (ev_at (w) < ev_rt_now)
2217 ev_at (w) = ev_rt_now;
2218 }
2219
2220 ANHE_at_cache (periodics [HEAP0]);
2221 downheap (periodics, periodiccnt, HEAP0);
2222 }
2223 else
2224 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
2225
2226 EV_FREQUENT_CHECK;
2227 feed_reverse (EV_A_ (W)w);
2228 }
2229 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
2230
2231 feed_reverse_done (EV_A_ EV_PERIODIC);
2232 }
2233}
2234
2235/* simply recalculate all periodics */
2236/* TODO: maybe ensure that at least one event happens when jumping forward? */
2237static void noinline
2238periodics_reschedule (EV_P)
2239{
2240 int i;
2241
2242 /* adjust periodics after time jump */
2243 for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
2244 {
2245 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2246
2247 if (w->reschedule_cb)
2248 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2249 else if (w->interval)
2250 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2251
2252 ANHE_at_cache (periodics [i]);
2253 }
2254
2255 reheap (periodics, periodiccnt);
2256}
2257#endif
2258
2259/* adjust all timers by a given offset */
2260static void noinline
2261timers_reschedule (EV_P_ ev_tstamp adjust)
2262{
2263 int i;
2264
2265 for (i = 0; i < timercnt; ++i)
2266 {
2267 ANHE *he = timers + i + HEAP0;
2268 ANHE_w (*he)->at += adjust;
2269 ANHE_at_cache (*he);
2270 }
2271}
2272
2273/* fetch new monotonic and realtime times from the kernel */
2274/* also detect if there was a timejump, and act accordingly */
2275inline_speed void
1329time_update (EV_P_ ev_tstamp max_block) 2276time_update (EV_P_ ev_tstamp max_block)
1330{ 2277{
1331 int i;
1332
1333#if EV_USE_MONOTONIC 2278#if EV_USE_MONOTONIC
1334 if (expect_true (have_monotonic)) 2279 if (expect_true (have_monotonic))
1335 { 2280 {
2281 int i;
1336 ev_tstamp odiff = rtmn_diff; 2282 ev_tstamp odiff = rtmn_diff;
1337 2283
1338 mn_now = get_clock (); 2284 mn_now = get_clock ();
1339 2285
1340 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2286 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1358 */ 2304 */
1359 for (i = 4; --i; ) 2305 for (i = 4; --i; )
1360 { 2306 {
1361 rtmn_diff = ev_rt_now - mn_now; 2307 rtmn_diff = ev_rt_now - mn_now;
1362 2308
1363 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 2309 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP))
1364 return; /* all is well */ 2310 return; /* all is well */
1365 2311
1366 ev_rt_now = ev_time (); 2312 ev_rt_now = ev_time ();
1367 mn_now = get_clock (); 2313 mn_now = get_clock ();
1368 now_floor = mn_now; 2314 now_floor = mn_now;
1369 } 2315 }
1370 2316
2317 /* no timer adjustment, as the monotonic clock doesn't jump */
2318 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1371# if EV_PERIODIC_ENABLE 2319# if EV_PERIODIC_ENABLE
1372 periodics_reschedule (EV_A); 2320 periodics_reschedule (EV_A);
1373# endif 2321# endif
1374 /* no timer adjustment, as the monotonic clock doesn't jump */
1375 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1376 } 2322 }
1377 else 2323 else
1378#endif 2324#endif
1379 { 2325 {
1380 ev_rt_now = ev_time (); 2326 ev_rt_now = ev_time ();
1381 2327
1382 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 2328 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1383 { 2329 {
2330 /* adjust timers. this is easy, as the offset is the same for all of them */
2331 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1384#if EV_PERIODIC_ENABLE 2332#if EV_PERIODIC_ENABLE
1385 periodics_reschedule (EV_A); 2333 periodics_reschedule (EV_A);
1386#endif 2334#endif
1387 /* adjust timers. this is easy, as the offset is the same for all of them */
1388 for (i = 0; i < timercnt; ++i)
1389 ((WT)timers [i])->at += ev_rt_now - mn_now;
1390 } 2335 }
1391 2336
1392 mn_now = ev_rt_now; 2337 mn_now = ev_rt_now;
1393 } 2338 }
1394} 2339}
1395 2340
1396void 2341void
1397ev_ref (EV_P)
1398{
1399 ++activecnt;
1400}
1401
1402void
1403ev_unref (EV_P)
1404{
1405 --activecnt;
1406}
1407
1408static int loop_done;
1409
1410void
1411ev_loop (EV_P_ int flags) 2342ev_run (EV_P_ int flags)
1412{ 2343{
1413 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) 2344#if EV_FEATURE_API
1414 ? EVUNLOOP_ONE 2345 ++loop_depth;
1415 : EVUNLOOP_CANCEL; 2346#endif
1416 2347
2348 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2349
2350 loop_done = EVBREAK_CANCEL;
2351
1417 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2352 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1418 2353
1419 do 2354 do
1420 { 2355 {
2356#if EV_VERIFY >= 2
2357 ev_verify (EV_A);
2358#endif
2359
1421#ifndef _WIN32 2360#ifndef _WIN32
1422 if (expect_false (curpid)) /* penalise the forking check even more */ 2361 if (expect_false (curpid)) /* penalise the forking check even more */
1423 if (expect_false (getpid () != curpid)) 2362 if (expect_false (getpid () != curpid))
1424 { 2363 {
1425 curpid = getpid (); 2364 curpid = getpid ();
… …
1431 /* we might have forked, so queue fork handlers */ 2370 /* we might have forked, so queue fork handlers */
1432 if (expect_false (postfork)) 2371 if (expect_false (postfork))
1433 if (forkcnt) 2372 if (forkcnt)
1434 { 2373 {
1435 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2374 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1436 call_pending (EV_A); 2375 EV_INVOKE_PENDING;
1437 } 2376 }
1438#endif 2377#endif
1439 2378
2379#if EV_PREPARE_ENABLE
1440 /* queue prepare watchers (and execute them) */ 2380 /* queue prepare watchers (and execute them) */
1441 if (expect_false (preparecnt)) 2381 if (expect_false (preparecnt))
1442 { 2382 {
1443 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2383 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1444 call_pending (EV_A); 2384 EV_INVOKE_PENDING;
1445 } 2385 }
2386#endif
1446 2387
1447 if (expect_false (!activecnt)) 2388 if (expect_false (loop_done))
1448 break; 2389 break;
1449 2390
1450 /* we might have forked, so reify kernel state if necessary */ 2391 /* we might have forked, so reify kernel state if necessary */
1451 if (expect_false (postfork)) 2392 if (expect_false (postfork))
1452 loop_fork (EV_A); 2393 loop_fork (EV_A);
… …
1454 /* update fd-related kernel structures */ 2395 /* update fd-related kernel structures */
1455 fd_reify (EV_A); 2396 fd_reify (EV_A);
1456 2397
1457 /* calculate blocking time */ 2398 /* calculate blocking time */
1458 { 2399 {
1459 ev_tstamp block; 2400 ev_tstamp waittime = 0.;
2401 ev_tstamp sleeptime = 0.;
1460 2402
2403 /* remember old timestamp for io_blocktime calculation */
2404 ev_tstamp prev_mn_now = mn_now;
2405
2406 /* update time to cancel out callback processing overhead */
2407 time_update (EV_A_ 1e100);
2408
1461 if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt)) 2409 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt)))
1462 block = 0.; /* do not block at all */
1463 else
1464 { 2410 {
1465 /* update time to cancel out callback processing overhead */
1466 time_update (EV_A_ 1e100);
1467
1468 block = MAX_BLOCKTIME; 2411 waittime = MAX_BLOCKTIME;
1469 2412
1470 if (timercnt) 2413 if (timercnt)
1471 { 2414 {
1472 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge; 2415 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
1473 if (block > to) block = to; 2416 if (waittime > to) waittime = to;
1474 } 2417 }
1475 2418
1476#if EV_PERIODIC_ENABLE 2419#if EV_PERIODIC_ENABLE
1477 if (periodiccnt) 2420 if (periodiccnt)
1478 { 2421 {
1479 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge; 2422 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1480 if (block > to) block = to; 2423 if (waittime > to) waittime = to;
1481 } 2424 }
1482#endif 2425#endif
1483 2426
2427 /* don't let timeouts decrease the waittime below timeout_blocktime */
2428 if (expect_false (waittime < timeout_blocktime))
2429 waittime = timeout_blocktime;
2430
2431 /* extra check because io_blocktime is commonly 0 */
1484 if (expect_false (block < 0.)) block = 0.; 2432 if (expect_false (io_blocktime))
2433 {
2434 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2435
2436 if (sleeptime > waittime - backend_fudge)
2437 sleeptime = waittime - backend_fudge;
2438
2439 if (expect_true (sleeptime > 0.))
2440 {
2441 ev_sleep (sleeptime);
2442 waittime -= sleeptime;
2443 }
2444 }
1485 } 2445 }
1486 2446
2447#if EV_FEATURE_API
1487 ++loop_count; 2448 ++loop_count;
2449#endif
2450 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
1488 backend_poll (EV_A_ block); 2451 backend_poll (EV_A_ waittime);
2452 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
1489 2453
1490 /* update ev_rt_now, do magic */ 2454 /* update ev_rt_now, do magic */
1491 time_update (EV_A_ block); 2455 time_update (EV_A_ waittime + sleeptime);
1492 } 2456 }
1493 2457
1494 /* queue pending timers and reschedule them */ 2458 /* queue pending timers and reschedule them */
1495 timers_reify (EV_A); /* relative timers called last */ 2459 timers_reify (EV_A); /* relative timers called last */
1496#if EV_PERIODIC_ENABLE 2460#if EV_PERIODIC_ENABLE
… …
1500#if EV_IDLE_ENABLE 2464#if EV_IDLE_ENABLE
1501 /* queue idle watchers unless other events are pending */ 2465 /* queue idle watchers unless other events are pending */
1502 idle_reify (EV_A); 2466 idle_reify (EV_A);
1503#endif 2467#endif
1504 2468
2469#if EV_CHECK_ENABLE
1505 /* queue check watchers, to be executed first */ 2470 /* queue check watchers, to be executed first */
1506 if (expect_false (checkcnt)) 2471 if (expect_false (checkcnt))
1507 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2472 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2473#endif
1508 2474
1509 call_pending (EV_A); 2475 EV_INVOKE_PENDING;
1510
1511 } 2476 }
1512 while (expect_true (activecnt && !loop_done)); 2477 while (expect_true (
2478 activecnt
2479 && !loop_done
2480 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2481 ));
1513 2482
1514 if (loop_done == EVUNLOOP_ONE) 2483 if (loop_done == EVBREAK_ONE)
1515 loop_done = EVUNLOOP_CANCEL; 2484 loop_done = EVBREAK_CANCEL;
1516}
1517 2485
2486#if EV_FEATURE_API
2487 --loop_depth;
2488#endif
2489}
2490
1518void 2491void
1519ev_unloop (EV_P_ int how) 2492ev_break (EV_P_ int how)
1520{ 2493{
1521 loop_done = how; 2494 loop_done = how;
1522} 2495}
1523 2496
2497void
2498ev_ref (EV_P)
2499{
2500 ++activecnt;
2501}
2502
2503void
2504ev_unref (EV_P)
2505{
2506 --activecnt;
2507}
2508
2509void
2510ev_now_update (EV_P)
2511{
2512 time_update (EV_A_ 1e100);
2513}
2514
2515void
2516ev_suspend (EV_P)
2517{
2518 ev_now_update (EV_A);
2519}
2520
2521void
2522ev_resume (EV_P)
2523{
2524 ev_tstamp mn_prev = mn_now;
2525
2526 ev_now_update (EV_A);
2527 timers_reschedule (EV_A_ mn_now - mn_prev);
2528#if EV_PERIODIC_ENABLE
2529 /* TODO: really do this? */
2530 periodics_reschedule (EV_A);
2531#endif
2532}
2533
1524/*****************************************************************************/ 2534/*****************************************************************************/
2535/* singly-linked list management, used when the expected list length is short */
1525 2536
1526void inline_size 2537inline_size void
1527wlist_add (WL *head, WL elem) 2538wlist_add (WL *head, WL elem)
1528{ 2539{
1529 elem->next = *head; 2540 elem->next = *head;
1530 *head = elem; 2541 *head = elem;
1531} 2542}
1532 2543
1533void inline_size 2544inline_size void
1534wlist_del (WL *head, WL elem) 2545wlist_del (WL *head, WL elem)
1535{ 2546{
1536 while (*head) 2547 while (*head)
1537 { 2548 {
1538 if (*head == elem) 2549 if (expect_true (*head == elem))
1539 { 2550 {
1540 *head = elem->next; 2551 *head = elem->next;
1541 return; 2552 break;
1542 } 2553 }
1543 2554
1544 head = &(*head)->next; 2555 head = &(*head)->next;
1545 } 2556 }
1546} 2557}
1547 2558
1548void inline_speed 2559/* internal, faster, version of ev_clear_pending */
2560inline_speed void
1549clear_pending (EV_P_ W w) 2561clear_pending (EV_P_ W w)
1550{ 2562{
1551 if (w->pending) 2563 if (w->pending)
1552 { 2564 {
1553 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2565 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
1554 w->pending = 0; 2566 w->pending = 0;
1555 } 2567 }
1556} 2568}
1557 2569
1558int 2570int
… …
1562 int pending = w_->pending; 2574 int pending = w_->pending;
1563 2575
1564 if (expect_true (pending)) 2576 if (expect_true (pending))
1565 { 2577 {
1566 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2578 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2579 p->w = (W)&pending_w;
1567 w_->pending = 0; 2580 w_->pending = 0;
1568 p->w = 0;
1569 return p->events; 2581 return p->events;
1570 } 2582 }
1571 else 2583 else
1572 return 0; 2584 return 0;
1573} 2585}
1574 2586
1575void inline_size 2587inline_size void
1576pri_adjust (EV_P_ W w) 2588pri_adjust (EV_P_ W w)
1577{ 2589{
1578 int pri = w->priority; 2590 int pri = ev_priority (w);
1579 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2591 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1580 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2592 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1581 w->priority = pri; 2593 ev_set_priority (w, pri);
1582} 2594}
1583 2595
1584void inline_speed 2596inline_speed void
1585ev_start (EV_P_ W w, int active) 2597ev_start (EV_P_ W w, int active)
1586{ 2598{
1587 pri_adjust (EV_A_ w); 2599 pri_adjust (EV_A_ w);
1588 w->active = active; 2600 w->active = active;
1589 ev_ref (EV_A); 2601 ev_ref (EV_A);
1590} 2602}
1591 2603
1592void inline_size 2604inline_size void
1593ev_stop (EV_P_ W w) 2605ev_stop (EV_P_ W w)
1594{ 2606{
1595 ev_unref (EV_A); 2607 ev_unref (EV_A);
1596 w->active = 0; 2608 w->active = 0;
1597} 2609}
… …
1604 int fd = w->fd; 2616 int fd = w->fd;
1605 2617
1606 if (expect_false (ev_is_active (w))) 2618 if (expect_false (ev_is_active (w)))
1607 return; 2619 return;
1608 2620
1609 assert (("ev_io_start called with negative fd", fd >= 0)); 2621 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2622 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2623
2624 EV_FREQUENT_CHECK;
1610 2625
1611 ev_start (EV_A_ (W)w, 1); 2626 ev_start (EV_A_ (W)w, 1);
1612 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2627 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
1613 wlist_add (&anfds[fd].head, (WL)w); 2628 wlist_add (&anfds[fd].head, (WL)w);
1614 2629
1615 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 2630 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
1616 w->events &= ~EV_IOFDSET; 2631 w->events &= ~EV__IOFDSET;
2632
2633 EV_FREQUENT_CHECK;
1617} 2634}
1618 2635
1619void noinline 2636void noinline
1620ev_io_stop (EV_P_ ev_io *w) 2637ev_io_stop (EV_P_ ev_io *w)
1621{ 2638{
1622 clear_pending (EV_A_ (W)w); 2639 clear_pending (EV_A_ (W)w);
1623 if (expect_false (!ev_is_active (w))) 2640 if (expect_false (!ev_is_active (w)))
1624 return; 2641 return;
1625 2642
1626 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 2643 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2644
2645 EV_FREQUENT_CHECK;
1627 2646
1628 wlist_del (&anfds[w->fd].head, (WL)w); 2647 wlist_del (&anfds[w->fd].head, (WL)w);
1629 ev_stop (EV_A_ (W)w); 2648 ev_stop (EV_A_ (W)w);
1630 2649
1631 fd_change (EV_A_ w->fd, 1); 2650 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2651
2652 EV_FREQUENT_CHECK;
1632} 2653}
1633 2654
1634void noinline 2655void noinline
1635ev_timer_start (EV_P_ ev_timer *w) 2656ev_timer_start (EV_P_ ev_timer *w)
1636{ 2657{
1637 if (expect_false (ev_is_active (w))) 2658 if (expect_false (ev_is_active (w)))
1638 return; 2659 return;
1639 2660
1640 ((WT)w)->at += mn_now; 2661 ev_at (w) += mn_now;
1641 2662
1642 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2663 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1643 2664
2665 EV_FREQUENT_CHECK;
2666
2667 ++timercnt;
1644 ev_start (EV_A_ (W)w, ++timercnt); 2668 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
1645 array_needsize (WT, timers, timermax, timercnt, EMPTY2); 2669 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1646 timers [timercnt - 1] = (WT)w; 2670 ANHE_w (timers [ev_active (w)]) = (WT)w;
1647 upheap (timers, timercnt - 1); 2671 ANHE_at_cache (timers [ev_active (w)]);
2672 upheap (timers, ev_active (w));
1648 2673
2674 EV_FREQUENT_CHECK;
2675
1649 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/ 2676 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
1650} 2677}
1651 2678
1652void noinline 2679void noinline
1653ev_timer_stop (EV_P_ ev_timer *w) 2680ev_timer_stop (EV_P_ ev_timer *w)
1654{ 2681{
1655 clear_pending (EV_A_ (W)w); 2682 clear_pending (EV_A_ (W)w);
1656 if (expect_false (!ev_is_active (w))) 2683 if (expect_false (!ev_is_active (w)))
1657 return; 2684 return;
1658 2685
1659 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w)); 2686 EV_FREQUENT_CHECK;
1660 2687
1661 { 2688 {
1662 int active = ((W)w)->active; 2689 int active = ev_active (w);
1663 2690
2691 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2692
2693 --timercnt;
2694
1664 if (expect_true (--active < --timercnt)) 2695 if (expect_true (active < timercnt + HEAP0))
1665 { 2696 {
1666 timers [active] = timers [timercnt]; 2697 timers [active] = timers [timercnt + HEAP0];
1667 adjustheap (timers, timercnt, active); 2698 adjustheap (timers, timercnt, active);
1668 } 2699 }
1669 } 2700 }
1670 2701
1671 ((WT)w)->at -= mn_now; 2702 ev_at (w) -= mn_now;
1672 2703
1673 ev_stop (EV_A_ (W)w); 2704 ev_stop (EV_A_ (W)w);
2705
2706 EV_FREQUENT_CHECK;
1674} 2707}
1675 2708
1676void noinline 2709void noinline
1677ev_timer_again (EV_P_ ev_timer *w) 2710ev_timer_again (EV_P_ ev_timer *w)
1678{ 2711{
2712 EV_FREQUENT_CHECK;
2713
1679 if (ev_is_active (w)) 2714 if (ev_is_active (w))
1680 { 2715 {
1681 if (w->repeat) 2716 if (w->repeat)
1682 { 2717 {
1683 ((WT)w)->at = mn_now + w->repeat; 2718 ev_at (w) = mn_now + w->repeat;
2719 ANHE_at_cache (timers [ev_active (w)]);
1684 adjustheap (timers, timercnt, ((W)w)->active - 1); 2720 adjustheap (timers, timercnt, ev_active (w));
1685 } 2721 }
1686 else 2722 else
1687 ev_timer_stop (EV_A_ w); 2723 ev_timer_stop (EV_A_ w);
1688 } 2724 }
1689 else if (w->repeat) 2725 else if (w->repeat)
1690 { 2726 {
1691 w->at = w->repeat; 2727 ev_at (w) = w->repeat;
1692 ev_timer_start (EV_A_ w); 2728 ev_timer_start (EV_A_ w);
1693 } 2729 }
2730
2731 EV_FREQUENT_CHECK;
2732}
2733
2734ev_tstamp
2735ev_timer_remaining (EV_P_ ev_timer *w)
2736{
2737 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
1694} 2738}
1695 2739
1696#if EV_PERIODIC_ENABLE 2740#if EV_PERIODIC_ENABLE
1697void noinline 2741void noinline
1698ev_periodic_start (EV_P_ ev_periodic *w) 2742ev_periodic_start (EV_P_ ev_periodic *w)
1699{ 2743{
1700 if (expect_false (ev_is_active (w))) 2744 if (expect_false (ev_is_active (w)))
1701 return; 2745 return;
1702 2746
1703 if (w->reschedule_cb) 2747 if (w->reschedule_cb)
1704 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 2748 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1705 else if (w->interval) 2749 else if (w->interval)
1706 { 2750 {
1707 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2751 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
1708 /* this formula differs from the one in periodic_reify because we do not always round up */ 2752 /* this formula differs from the one in periodic_reify because we do not always round up */
1709 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2753 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1710 } 2754 }
1711 else 2755 else
1712 ((WT)w)->at = w->offset; 2756 ev_at (w) = w->offset;
1713 2757
2758 EV_FREQUENT_CHECK;
2759
2760 ++periodiccnt;
1714 ev_start (EV_A_ (W)w, ++periodiccnt); 2761 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
1715 array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2); 2762 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
1716 periodics [periodiccnt - 1] = (WT)w; 2763 ANHE_w (periodics [ev_active (w)]) = (WT)w;
1717 upheap (periodics, periodiccnt - 1); 2764 ANHE_at_cache (periodics [ev_active (w)]);
2765 upheap (periodics, ev_active (w));
1718 2766
2767 EV_FREQUENT_CHECK;
2768
1719 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/ 2769 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
1720} 2770}
1721 2771
1722void noinline 2772void noinline
1723ev_periodic_stop (EV_P_ ev_periodic *w) 2773ev_periodic_stop (EV_P_ ev_periodic *w)
1724{ 2774{
1725 clear_pending (EV_A_ (W)w); 2775 clear_pending (EV_A_ (W)w);
1726 if (expect_false (!ev_is_active (w))) 2776 if (expect_false (!ev_is_active (w)))
1727 return; 2777 return;
1728 2778
1729 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w)); 2779 EV_FREQUENT_CHECK;
1730 2780
1731 { 2781 {
1732 int active = ((W)w)->active; 2782 int active = ev_active (w);
1733 2783
2784 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2785
2786 --periodiccnt;
2787
1734 if (expect_true (--active < --periodiccnt)) 2788 if (expect_true (active < periodiccnt + HEAP0))
1735 { 2789 {
1736 periodics [active] = periodics [periodiccnt]; 2790 periodics [active] = periodics [periodiccnt + HEAP0];
1737 adjustheap (periodics, periodiccnt, active); 2791 adjustheap (periodics, periodiccnt, active);
1738 } 2792 }
1739 } 2793 }
1740 2794
1741 ev_stop (EV_A_ (W)w); 2795 ev_stop (EV_A_ (W)w);
2796
2797 EV_FREQUENT_CHECK;
1742} 2798}
1743 2799
1744void noinline 2800void noinline
1745ev_periodic_again (EV_P_ ev_periodic *w) 2801ev_periodic_again (EV_P_ ev_periodic *w)
1746{ 2802{
… …
1752 2808
1753#ifndef SA_RESTART 2809#ifndef SA_RESTART
1754# define SA_RESTART 0 2810# define SA_RESTART 0
1755#endif 2811#endif
1756 2812
2813#if EV_SIGNAL_ENABLE
2814
1757void noinline 2815void noinline
1758ev_signal_start (EV_P_ ev_signal *w) 2816ev_signal_start (EV_P_ ev_signal *w)
1759{ 2817{
1760#if EV_MULTIPLICITY
1761 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1762#endif
1763 if (expect_false (ev_is_active (w))) 2818 if (expect_false (ev_is_active (w)))
1764 return; 2819 return;
1765 2820
1766 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 2821 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
1767 2822
2823#if EV_MULTIPLICITY
2824 assert (("libev: a signal must not be attached to two different loops",
2825 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2826
2827 signals [w->signum - 1].loop = EV_A;
2828#endif
2829
2830 EV_FREQUENT_CHECK;
2831
2832#if EV_USE_SIGNALFD
2833 if (sigfd == -2)
1768 { 2834 {
1769#ifndef _WIN32 2835 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
1770 sigset_t full, prev; 2836 if (sigfd < 0 && errno == EINVAL)
1771 sigfillset (&full); 2837 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
1772 sigprocmask (SIG_SETMASK, &full, &prev);
1773#endif
1774 2838
1775 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 2839 if (sigfd >= 0)
2840 {
2841 fd_intern (sigfd); /* doing it twice will not hurt */
1776 2842
1777#ifndef _WIN32 2843 sigemptyset (&sigfd_set);
1778 sigprocmask (SIG_SETMASK, &prev, 0); 2844
1779#endif 2845 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
2846 ev_set_priority (&sigfd_w, EV_MAXPRI);
2847 ev_io_start (EV_A_ &sigfd_w);
2848 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
2849 }
1780 } 2850 }
2851
2852 if (sigfd >= 0)
2853 {
2854 /* TODO: check .head */
2855 sigaddset (&sigfd_set, w->signum);
2856 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
2857
2858 signalfd (sigfd, &sigfd_set, 0);
2859 }
2860#endif
1781 2861
1782 ev_start (EV_A_ (W)w, 1); 2862 ev_start (EV_A_ (W)w, 1);
1783 wlist_add (&signals [w->signum - 1].head, (WL)w); 2863 wlist_add (&signals [w->signum - 1].head, (WL)w);
1784 2864
1785 if (!((WL)w)->next) 2865 if (!((WL)w)->next)
2866# if EV_USE_SIGNALFD
2867 if (sigfd < 0) /*TODO*/
2868# endif
1786 { 2869 {
1787#if _WIN32 2870# ifdef _WIN32
2871 evpipe_init (EV_A);
2872
1788 signal (w->signum, sighandler); 2873 signal (w->signum, ev_sighandler);
1789#else 2874# else
1790 struct sigaction sa; 2875 struct sigaction sa;
2876
2877 evpipe_init (EV_A);
2878
1791 sa.sa_handler = sighandler; 2879 sa.sa_handler = ev_sighandler;
1792 sigfillset (&sa.sa_mask); 2880 sigfillset (&sa.sa_mask);
1793 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2881 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1794 sigaction (w->signum, &sa, 0); 2882 sigaction (w->signum, &sa, 0);
2883
2884 sigemptyset (&sa.sa_mask);
2885 sigaddset (&sa.sa_mask, w->signum);
2886 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
1795#endif 2887#endif
1796 } 2888 }
2889
2890 EV_FREQUENT_CHECK;
1797} 2891}
1798 2892
1799void noinline 2893void noinline
1800ev_signal_stop (EV_P_ ev_signal *w) 2894ev_signal_stop (EV_P_ ev_signal *w)
1801{ 2895{
1802 clear_pending (EV_A_ (W)w); 2896 clear_pending (EV_A_ (W)w);
1803 if (expect_false (!ev_is_active (w))) 2897 if (expect_false (!ev_is_active (w)))
1804 return; 2898 return;
1805 2899
2900 EV_FREQUENT_CHECK;
2901
1806 wlist_del (&signals [w->signum - 1].head, (WL)w); 2902 wlist_del (&signals [w->signum - 1].head, (WL)w);
1807 ev_stop (EV_A_ (W)w); 2903 ev_stop (EV_A_ (W)w);
1808 2904
1809 if (!signals [w->signum - 1].head) 2905 if (!signals [w->signum - 1].head)
2906 {
2907#if EV_MULTIPLICITY
2908 signals [w->signum - 1].loop = 0; /* unattach from signal */
2909#endif
2910#if EV_USE_SIGNALFD
2911 if (sigfd >= 0)
2912 {
2913 sigset_t ss;
2914
2915 sigemptyset (&ss);
2916 sigaddset (&ss, w->signum);
2917 sigdelset (&sigfd_set, w->signum);
2918
2919 signalfd (sigfd, &sigfd_set, 0);
2920 sigprocmask (SIG_UNBLOCK, &ss, 0);
2921 }
2922 else
2923#endif
1810 signal (w->signum, SIG_DFL); 2924 signal (w->signum, SIG_DFL);
2925 }
2926
2927 EV_FREQUENT_CHECK;
1811} 2928}
2929
2930#endif
2931
2932#if EV_CHILD_ENABLE
1812 2933
1813void 2934void
1814ev_child_start (EV_P_ ev_child *w) 2935ev_child_start (EV_P_ ev_child *w)
1815{ 2936{
1816#if EV_MULTIPLICITY 2937#if EV_MULTIPLICITY
1817 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2938 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1818#endif 2939#endif
1819 if (expect_false (ev_is_active (w))) 2940 if (expect_false (ev_is_active (w)))
1820 return; 2941 return;
1821 2942
2943 EV_FREQUENT_CHECK;
2944
1822 ev_start (EV_A_ (W)w, 1); 2945 ev_start (EV_A_ (W)w, 1);
1823 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2946 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2947
2948 EV_FREQUENT_CHECK;
1824} 2949}
1825 2950
1826void 2951void
1827ev_child_stop (EV_P_ ev_child *w) 2952ev_child_stop (EV_P_ ev_child *w)
1828{ 2953{
1829 clear_pending (EV_A_ (W)w); 2954 clear_pending (EV_A_ (W)w);
1830 if (expect_false (!ev_is_active (w))) 2955 if (expect_false (!ev_is_active (w)))
1831 return; 2956 return;
1832 2957
2958 EV_FREQUENT_CHECK;
2959
1833 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2960 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
1834 ev_stop (EV_A_ (W)w); 2961 ev_stop (EV_A_ (W)w);
2962
2963 EV_FREQUENT_CHECK;
1835} 2964}
2965
2966#endif
1836 2967
1837#if EV_STAT_ENABLE 2968#if EV_STAT_ENABLE
1838 2969
1839# ifdef _WIN32 2970# ifdef _WIN32
1840# undef lstat 2971# undef lstat
1841# define lstat(a,b) _stati64 (a,b) 2972# define lstat(a,b) _stati64 (a,b)
1842# endif 2973# endif
1843 2974
1844#define DEF_STAT_INTERVAL 5.0074891 2975#define DEF_STAT_INTERVAL 5.0074891
2976#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
1845#define MIN_STAT_INTERVAL 0.1074891 2977#define MIN_STAT_INTERVAL 0.1074891
1846 2978
1847static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 2979static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1848 2980
1849#if EV_USE_INOTIFY 2981#if EV_USE_INOTIFY
1850# define EV_INOTIFY_BUFSIZE 8192 2982
2983/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
2984# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
1851 2985
1852static void noinline 2986static void noinline
1853infy_add (EV_P_ ev_stat *w) 2987infy_add (EV_P_ ev_stat *w)
1854{ 2988{
1855 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); 2989 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);
1856 2990
1857 if (w->wd < 0) 2991 if (w->wd >= 0)
2992 {
2993 struct statfs sfs;
2994
2995 /* now local changes will be tracked by inotify, but remote changes won't */
2996 /* unless the filesystem is known to be local, we therefore still poll */
2997 /* also do poll on <2.6.25, but with normal frequency */
2998
2999 if (!fs_2625)
3000 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3001 else if (!statfs (w->path, &sfs)
3002 && (sfs.f_type == 0x1373 /* devfs */
3003 || sfs.f_type == 0xEF53 /* ext2/3 */
3004 || sfs.f_type == 0x3153464a /* jfs */
3005 || sfs.f_type == 0x52654973 /* reiser3 */
3006 || sfs.f_type == 0x01021994 /* tempfs */
3007 || sfs.f_type == 0x58465342 /* xfs */))
3008 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3009 else
3010 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
1858 { 3011 }
1859 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 3012 else
3013 {
3014 /* can't use inotify, continue to stat */
3015 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
1860 3016
1861 /* monitor some parent directory for speedup hints */ 3017 /* if path is not there, monitor some parent directory for speedup hints */
3018 /* note that exceeding the hardcoded path limit is not a correctness issue, */
3019 /* but an efficiency issue only */
1862 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3020 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
1863 { 3021 {
1864 char path [4096]; 3022 char path [4096];
1865 strcpy (path, w->path); 3023 strcpy (path, w->path);
1866 3024
… …
1869 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 3027 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
1870 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 3028 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
1871 3029
1872 char *pend = strrchr (path, '/'); 3030 char *pend = strrchr (path, '/');
1873 3031
1874 if (!pend) 3032 if (!pend || pend == path)
1875 break; /* whoops, no '/', complain to your admin */ 3033 break;
1876 3034
1877 *pend = 0; 3035 *pend = 0;
1878 w->wd = inotify_add_watch (fs_fd, path, mask); 3036 w->wd = inotify_add_watch (fs_fd, path, mask);
1879 } 3037 }
1880 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3038 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
1881 } 3039 }
1882 } 3040 }
1883 else
1884 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
1885 3041
1886 if (w->wd >= 0) 3042 if (w->wd >= 0)
1887 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3043 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
3044
3045 /* now re-arm timer, if required */
3046 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3047 ev_timer_again (EV_A_ &w->timer);
3048 if (ev_is_active (&w->timer)) ev_unref (EV_A);
1888} 3049}
1889 3050
1890static void noinline 3051static void noinline
1891infy_del (EV_P_ ev_stat *w) 3052infy_del (EV_P_ ev_stat *w)
1892{ 3053{
… …
1895 3056
1896 if (wd < 0) 3057 if (wd < 0)
1897 return; 3058 return;
1898 3059
1899 w->wd = -2; 3060 w->wd = -2;
1900 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3061 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
1901 wlist_del (&fs_hash [slot].head, (WL)w); 3062 wlist_del (&fs_hash [slot].head, (WL)w);
1902 3063
1903 /* remove this watcher, if others are watching it, they will rearm */ 3064 /* remove this watcher, if others are watching it, they will rearm */
1904 inotify_rm_watch (fs_fd, wd); 3065 inotify_rm_watch (fs_fd, wd);
1905} 3066}
1906 3067
1907static void noinline 3068static void noinline
1908infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3069infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
1909{ 3070{
1910 if (slot < 0) 3071 if (slot < 0)
1911 /* overflow, need to check for all hahs slots */ 3072 /* overflow, need to check for all hash slots */
1912 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3073 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
1913 infy_wd (EV_A_ slot, wd, ev); 3074 infy_wd (EV_A_ slot, wd, ev);
1914 else 3075 else
1915 { 3076 {
1916 WL w_; 3077 WL w_;
1917 3078
1918 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3079 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
1919 { 3080 {
1920 ev_stat *w = (ev_stat *)w_; 3081 ev_stat *w = (ev_stat *)w_;
1921 w_ = w_->next; /* lets us remove this watcher and all before it */ 3082 w_ = w_->next; /* lets us remove this watcher and all before it */
1922 3083
1923 if (w->wd == wd || wd == -1) 3084 if (w->wd == wd || wd == -1)
1924 { 3085 {
1925 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3086 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
1926 { 3087 {
3088 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
1927 w->wd = -1; 3089 w->wd = -1;
1928 infy_add (EV_A_ w); /* re-add, no matter what */ 3090 infy_add (EV_A_ w); /* re-add, no matter what */
1929 } 3091 }
1930 3092
1931 stat_timer_cb (EV_A_ &w->timer, 0); 3093 stat_timer_cb (EV_A_ &w->timer, 0);
… …
1936 3098
1937static void 3099static void
1938infy_cb (EV_P_ ev_io *w, int revents) 3100infy_cb (EV_P_ ev_io *w, int revents)
1939{ 3101{
1940 char buf [EV_INOTIFY_BUFSIZE]; 3102 char buf [EV_INOTIFY_BUFSIZE];
1941 struct inotify_event *ev = (struct inotify_event *)buf;
1942 int ofs; 3103 int ofs;
1943 int len = read (fs_fd, buf, sizeof (buf)); 3104 int len = read (fs_fd, buf, sizeof (buf));
1944 3105
1945 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3106 for (ofs = 0; ofs < len; )
3107 {
3108 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
1946 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3109 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3110 ofs += sizeof (struct inotify_event) + ev->len;
3111 }
1947} 3112}
1948 3113
1949void inline_size 3114inline_size void
3115ev_check_2625 (EV_P)
3116{
3117 /* kernels < 2.6.25 are borked
3118 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3119 */
3120 if (ev_linux_version () < 0x020619)
3121 return;
3122
3123 fs_2625 = 1;
3124}
3125
3126inline_size int
3127infy_newfd (void)
3128{
3129#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3130 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3131 if (fd >= 0)
3132 return fd;
3133#endif
3134 return inotify_init ();
3135}
3136
3137inline_size void
1950infy_init (EV_P) 3138infy_init (EV_P)
1951{ 3139{
1952 if (fs_fd != -2) 3140 if (fs_fd != -2)
1953 return; 3141 return;
1954 3142
3143 fs_fd = -1;
3144
3145 ev_check_2625 (EV_A);
3146
1955 fs_fd = inotify_init (); 3147 fs_fd = infy_newfd ();
1956 3148
1957 if (fs_fd >= 0) 3149 if (fs_fd >= 0)
1958 { 3150 {
3151 fd_intern (fs_fd);
1959 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3152 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
1960 ev_set_priority (&fs_w, EV_MAXPRI); 3153 ev_set_priority (&fs_w, EV_MAXPRI);
1961 ev_io_start (EV_A_ &fs_w); 3154 ev_io_start (EV_A_ &fs_w);
3155 ev_unref (EV_A);
1962 } 3156 }
1963} 3157}
1964 3158
1965void inline_size 3159inline_size void
1966infy_fork (EV_P) 3160infy_fork (EV_P)
1967{ 3161{
1968 int slot; 3162 int slot;
1969 3163
1970 if (fs_fd < 0) 3164 if (fs_fd < 0)
1971 return; 3165 return;
1972 3166
3167 ev_ref (EV_A);
3168 ev_io_stop (EV_A_ &fs_w);
1973 close (fs_fd); 3169 close (fs_fd);
1974 fs_fd = inotify_init (); 3170 fs_fd = infy_newfd ();
1975 3171
3172 if (fs_fd >= 0)
3173 {
3174 fd_intern (fs_fd);
3175 ev_io_set (&fs_w, fs_fd, EV_READ);
3176 ev_io_start (EV_A_ &fs_w);
3177 ev_unref (EV_A);
3178 }
3179
1976 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3180 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
1977 { 3181 {
1978 WL w_ = fs_hash [slot].head; 3182 WL w_ = fs_hash [slot].head;
1979 fs_hash [slot].head = 0; 3183 fs_hash [slot].head = 0;
1980 3184
1981 while (w_) 3185 while (w_)
… …
1986 w->wd = -1; 3190 w->wd = -1;
1987 3191
1988 if (fs_fd >= 0) 3192 if (fs_fd >= 0)
1989 infy_add (EV_A_ w); /* re-add, no matter what */ 3193 infy_add (EV_A_ w); /* re-add, no matter what */
1990 else 3194 else
3195 {
3196 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3197 if (ev_is_active (&w->timer)) ev_ref (EV_A);
1991 ev_timer_start (EV_A_ &w->timer); 3198 ev_timer_again (EV_A_ &w->timer);
3199 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3200 }
1992 } 3201 }
1993
1994 } 3202 }
1995} 3203}
1996 3204
3205#endif
3206
3207#ifdef _WIN32
3208# define EV_LSTAT(p,b) _stati64 (p, b)
3209#else
3210# define EV_LSTAT(p,b) lstat (p, b)
1997#endif 3211#endif
1998 3212
1999void 3213void
2000ev_stat_stat (EV_P_ ev_stat *w) 3214ev_stat_stat (EV_P_ ev_stat *w)
2001{ 3215{
… …
2008static void noinline 3222static void noinline
2009stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3223stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2010{ 3224{
2011 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3225 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2012 3226
2013 /* we copy this here each the time so that */ 3227 ev_statdata prev = w->attr;
2014 /* prev has the old value when the callback gets invoked */
2015 w->prev = w->attr;
2016 ev_stat_stat (EV_A_ w); 3228 ev_stat_stat (EV_A_ w);
2017 3229
2018 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3230 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2019 if ( 3231 if (
2020 w->prev.st_dev != w->attr.st_dev 3232 prev.st_dev != w->attr.st_dev
2021 || w->prev.st_ino != w->attr.st_ino 3233 || prev.st_ino != w->attr.st_ino
2022 || w->prev.st_mode != w->attr.st_mode 3234 || prev.st_mode != w->attr.st_mode
2023 || w->prev.st_nlink != w->attr.st_nlink 3235 || prev.st_nlink != w->attr.st_nlink
2024 || w->prev.st_uid != w->attr.st_uid 3236 || prev.st_uid != w->attr.st_uid
2025 || w->prev.st_gid != w->attr.st_gid 3237 || prev.st_gid != w->attr.st_gid
2026 || w->prev.st_rdev != w->attr.st_rdev 3238 || prev.st_rdev != w->attr.st_rdev
2027 || w->prev.st_size != w->attr.st_size 3239 || prev.st_size != w->attr.st_size
2028 || w->prev.st_atime != w->attr.st_atime 3240 || prev.st_atime != w->attr.st_atime
2029 || w->prev.st_mtime != w->attr.st_mtime 3241 || prev.st_mtime != w->attr.st_mtime
2030 || w->prev.st_ctime != w->attr.st_ctime 3242 || prev.st_ctime != w->attr.st_ctime
2031 ) { 3243 ) {
3244 /* we only update w->prev on actual differences */
3245 /* in case we test more often than invoke the callback, */
3246 /* to ensure that prev is always different to attr */
3247 w->prev = prev;
3248
2032 #if EV_USE_INOTIFY 3249 #if EV_USE_INOTIFY
3250 if (fs_fd >= 0)
3251 {
2033 infy_del (EV_A_ w); 3252 infy_del (EV_A_ w);
2034 infy_add (EV_A_ w); 3253 infy_add (EV_A_ w);
2035 ev_stat_stat (EV_A_ w); /* avoid race... */ 3254 ev_stat_stat (EV_A_ w); /* avoid race... */
3255 }
2036 #endif 3256 #endif
2037 3257
2038 ev_feed_event (EV_A_ w, EV_STAT); 3258 ev_feed_event (EV_A_ w, EV_STAT);
2039 } 3259 }
2040} 3260}
… …
2043ev_stat_start (EV_P_ ev_stat *w) 3263ev_stat_start (EV_P_ ev_stat *w)
2044{ 3264{
2045 if (expect_false (ev_is_active (w))) 3265 if (expect_false (ev_is_active (w)))
2046 return; 3266 return;
2047 3267
2048 /* since we use memcmp, we need to clear any padding data etc. */
2049 memset (&w->prev, 0, sizeof (ev_statdata));
2050 memset (&w->attr, 0, sizeof (ev_statdata));
2051
2052 ev_stat_stat (EV_A_ w); 3268 ev_stat_stat (EV_A_ w);
2053 3269
3270 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2054 if (w->interval < MIN_STAT_INTERVAL) 3271 w->interval = MIN_STAT_INTERVAL;
2055 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2056 3272
2057 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 3273 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2058 ev_set_priority (&w->timer, ev_priority (w)); 3274 ev_set_priority (&w->timer, ev_priority (w));
2059 3275
2060#if EV_USE_INOTIFY 3276#if EV_USE_INOTIFY
2061 infy_init (EV_A); 3277 infy_init (EV_A);
2062 3278
2063 if (fs_fd >= 0) 3279 if (fs_fd >= 0)
2064 infy_add (EV_A_ w); 3280 infy_add (EV_A_ w);
2065 else 3281 else
2066#endif 3282#endif
3283 {
2067 ev_timer_start (EV_A_ &w->timer); 3284 ev_timer_again (EV_A_ &w->timer);
3285 ev_unref (EV_A);
3286 }
2068 3287
2069 ev_start (EV_A_ (W)w, 1); 3288 ev_start (EV_A_ (W)w, 1);
3289
3290 EV_FREQUENT_CHECK;
2070} 3291}
2071 3292
2072void 3293void
2073ev_stat_stop (EV_P_ ev_stat *w) 3294ev_stat_stop (EV_P_ ev_stat *w)
2074{ 3295{
2075 clear_pending (EV_A_ (W)w); 3296 clear_pending (EV_A_ (W)w);
2076 if (expect_false (!ev_is_active (w))) 3297 if (expect_false (!ev_is_active (w)))
2077 return; 3298 return;
2078 3299
3300 EV_FREQUENT_CHECK;
3301
2079#if EV_USE_INOTIFY 3302#if EV_USE_INOTIFY
2080 infy_del (EV_A_ w); 3303 infy_del (EV_A_ w);
2081#endif 3304#endif
3305
3306 if (ev_is_active (&w->timer))
3307 {
3308 ev_ref (EV_A);
2082 ev_timer_stop (EV_A_ &w->timer); 3309 ev_timer_stop (EV_A_ &w->timer);
3310 }
2083 3311
2084 ev_stop (EV_A_ (W)w); 3312 ev_stop (EV_A_ (W)w);
3313
3314 EV_FREQUENT_CHECK;
2085} 3315}
2086#endif 3316#endif
2087 3317
2088#if EV_IDLE_ENABLE 3318#if EV_IDLE_ENABLE
2089void 3319void
… …
2091{ 3321{
2092 if (expect_false (ev_is_active (w))) 3322 if (expect_false (ev_is_active (w)))
2093 return; 3323 return;
2094 3324
2095 pri_adjust (EV_A_ (W)w); 3325 pri_adjust (EV_A_ (W)w);
3326
3327 EV_FREQUENT_CHECK;
2096 3328
2097 { 3329 {
2098 int active = ++idlecnt [ABSPRI (w)]; 3330 int active = ++idlecnt [ABSPRI (w)];
2099 3331
2100 ++idleall; 3332 ++idleall;
2101 ev_start (EV_A_ (W)w, active); 3333 ev_start (EV_A_ (W)w, active);
2102 3334
2103 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 3335 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2104 idles [ABSPRI (w)][active - 1] = w; 3336 idles [ABSPRI (w)][active - 1] = w;
2105 } 3337 }
3338
3339 EV_FREQUENT_CHECK;
2106} 3340}
2107 3341
2108void 3342void
2109ev_idle_stop (EV_P_ ev_idle *w) 3343ev_idle_stop (EV_P_ ev_idle *w)
2110{ 3344{
2111 clear_pending (EV_A_ (W)w); 3345 clear_pending (EV_A_ (W)w);
2112 if (expect_false (!ev_is_active (w))) 3346 if (expect_false (!ev_is_active (w)))
2113 return; 3347 return;
2114 3348
3349 EV_FREQUENT_CHECK;
3350
2115 { 3351 {
2116 int active = ((W)w)->active; 3352 int active = ev_active (w);
2117 3353
2118 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]]; 3354 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2119 ((W)idles [ABSPRI (w)][active - 1])->active = active; 3355 ev_active (idles [ABSPRI (w)][active - 1]) = active;
2120 3356
2121 ev_stop (EV_A_ (W)w); 3357 ev_stop (EV_A_ (W)w);
2122 --idleall; 3358 --idleall;
2123 } 3359 }
2124}
2125#endif
2126 3360
3361 EV_FREQUENT_CHECK;
3362}
3363#endif
3364
3365#if EV_PREPARE_ENABLE
2127void 3366void
2128ev_prepare_start (EV_P_ ev_prepare *w) 3367ev_prepare_start (EV_P_ ev_prepare *w)
2129{ 3368{
2130 if (expect_false (ev_is_active (w))) 3369 if (expect_false (ev_is_active (w)))
2131 return; 3370 return;
3371
3372 EV_FREQUENT_CHECK;
2132 3373
2133 ev_start (EV_A_ (W)w, ++preparecnt); 3374 ev_start (EV_A_ (W)w, ++preparecnt);
2134 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 3375 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2135 prepares [preparecnt - 1] = w; 3376 prepares [preparecnt - 1] = w;
3377
3378 EV_FREQUENT_CHECK;
2136} 3379}
2137 3380
2138void 3381void
2139ev_prepare_stop (EV_P_ ev_prepare *w) 3382ev_prepare_stop (EV_P_ ev_prepare *w)
2140{ 3383{
2141 clear_pending (EV_A_ (W)w); 3384 clear_pending (EV_A_ (W)w);
2142 if (expect_false (!ev_is_active (w))) 3385 if (expect_false (!ev_is_active (w)))
2143 return; 3386 return;
2144 3387
3388 EV_FREQUENT_CHECK;
3389
2145 { 3390 {
2146 int active = ((W)w)->active; 3391 int active = ev_active (w);
3392
2147 prepares [active - 1] = prepares [--preparecnt]; 3393 prepares [active - 1] = prepares [--preparecnt];
2148 ((W)prepares [active - 1])->active = active; 3394 ev_active (prepares [active - 1]) = active;
2149 } 3395 }
2150 3396
2151 ev_stop (EV_A_ (W)w); 3397 ev_stop (EV_A_ (W)w);
2152}
2153 3398
3399 EV_FREQUENT_CHECK;
3400}
3401#endif
3402
3403#if EV_CHECK_ENABLE
2154void 3404void
2155ev_check_start (EV_P_ ev_check *w) 3405ev_check_start (EV_P_ ev_check *w)
2156{ 3406{
2157 if (expect_false (ev_is_active (w))) 3407 if (expect_false (ev_is_active (w)))
2158 return; 3408 return;
3409
3410 EV_FREQUENT_CHECK;
2159 3411
2160 ev_start (EV_A_ (W)w, ++checkcnt); 3412 ev_start (EV_A_ (W)w, ++checkcnt);
2161 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 3413 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2162 checks [checkcnt - 1] = w; 3414 checks [checkcnt - 1] = w;
3415
3416 EV_FREQUENT_CHECK;
2163} 3417}
2164 3418
2165void 3419void
2166ev_check_stop (EV_P_ ev_check *w) 3420ev_check_stop (EV_P_ ev_check *w)
2167{ 3421{
2168 clear_pending (EV_A_ (W)w); 3422 clear_pending (EV_A_ (W)w);
2169 if (expect_false (!ev_is_active (w))) 3423 if (expect_false (!ev_is_active (w)))
2170 return; 3424 return;
2171 3425
3426 EV_FREQUENT_CHECK;
3427
2172 { 3428 {
2173 int active = ((W)w)->active; 3429 int active = ev_active (w);
3430
2174 checks [active - 1] = checks [--checkcnt]; 3431 checks [active - 1] = checks [--checkcnt];
2175 ((W)checks [active - 1])->active = active; 3432 ev_active (checks [active - 1]) = active;
2176 } 3433 }
2177 3434
2178 ev_stop (EV_A_ (W)w); 3435 ev_stop (EV_A_ (W)w);
3436
3437 EV_FREQUENT_CHECK;
2179} 3438}
3439#endif
2180 3440
2181#if EV_EMBED_ENABLE 3441#if EV_EMBED_ENABLE
2182void noinline 3442void noinline
2183ev_embed_sweep (EV_P_ ev_embed *w) 3443ev_embed_sweep (EV_P_ ev_embed *w)
2184{ 3444{
2185 ev_loop (w->loop, EVLOOP_NONBLOCK); 3445 ev_run (w->other, EVRUN_NOWAIT);
2186} 3446}
2187 3447
2188static void 3448static void
2189embed_cb (EV_P_ ev_io *io, int revents) 3449embed_io_cb (EV_P_ ev_io *io, int revents)
2190{ 3450{
2191 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 3451 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2192 3452
2193 if (ev_cb (w)) 3453 if (ev_cb (w))
2194 ev_feed_event (EV_A_ (W)w, EV_EMBED); 3454 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2195 else 3455 else
2196 ev_embed_sweep (loop, w); 3456 ev_run (w->other, EVRUN_NOWAIT);
2197} 3457}
3458
3459static void
3460embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3461{
3462 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
3463
3464 {
3465 EV_P = w->other;
3466
3467 while (fdchangecnt)
3468 {
3469 fd_reify (EV_A);
3470 ev_run (EV_A_ EVRUN_NOWAIT);
3471 }
3472 }
3473}
3474
3475static void
3476embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
3477{
3478 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3479
3480 ev_embed_stop (EV_A_ w);
3481
3482 {
3483 EV_P = w->other;
3484
3485 ev_loop_fork (EV_A);
3486 ev_run (EV_A_ EVRUN_NOWAIT);
3487 }
3488
3489 ev_embed_start (EV_A_ w);
3490}
3491
3492#if 0
3493static void
3494embed_idle_cb (EV_P_ ev_idle *idle, int revents)
3495{
3496 ev_idle_stop (EV_A_ idle);
3497}
3498#endif
2198 3499
2199void 3500void
2200ev_embed_start (EV_P_ ev_embed *w) 3501ev_embed_start (EV_P_ ev_embed *w)
2201{ 3502{
2202 if (expect_false (ev_is_active (w))) 3503 if (expect_false (ev_is_active (w)))
2203 return; 3504 return;
2204 3505
2205 { 3506 {
2206 struct ev_loop *loop = w->loop; 3507 EV_P = w->other;
2207 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3508 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2208 ev_io_init (&w->io, embed_cb, backend_fd, EV_READ); 3509 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2209 } 3510 }
3511
3512 EV_FREQUENT_CHECK;
2210 3513
2211 ev_set_priority (&w->io, ev_priority (w)); 3514 ev_set_priority (&w->io, ev_priority (w));
2212 ev_io_start (EV_A_ &w->io); 3515 ev_io_start (EV_A_ &w->io);
2213 3516
3517 ev_prepare_init (&w->prepare, embed_prepare_cb);
3518 ev_set_priority (&w->prepare, EV_MINPRI);
3519 ev_prepare_start (EV_A_ &w->prepare);
3520
3521 ev_fork_init (&w->fork, embed_fork_cb);
3522 ev_fork_start (EV_A_ &w->fork);
3523
3524 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
3525
2214 ev_start (EV_A_ (W)w, 1); 3526 ev_start (EV_A_ (W)w, 1);
3527
3528 EV_FREQUENT_CHECK;
2215} 3529}
2216 3530
2217void 3531void
2218ev_embed_stop (EV_P_ ev_embed *w) 3532ev_embed_stop (EV_P_ ev_embed *w)
2219{ 3533{
2220 clear_pending (EV_A_ (W)w); 3534 clear_pending (EV_A_ (W)w);
2221 if (expect_false (!ev_is_active (w))) 3535 if (expect_false (!ev_is_active (w)))
2222 return; 3536 return;
2223 3537
3538 EV_FREQUENT_CHECK;
3539
2224 ev_io_stop (EV_A_ &w->io); 3540 ev_io_stop (EV_A_ &w->io);
3541 ev_prepare_stop (EV_A_ &w->prepare);
3542 ev_fork_stop (EV_A_ &w->fork);
2225 3543
2226 ev_stop (EV_A_ (W)w); 3544 ev_stop (EV_A_ (W)w);
3545
3546 EV_FREQUENT_CHECK;
2227} 3547}
2228#endif 3548#endif
2229 3549
2230#if EV_FORK_ENABLE 3550#if EV_FORK_ENABLE
2231void 3551void
2232ev_fork_start (EV_P_ ev_fork *w) 3552ev_fork_start (EV_P_ ev_fork *w)
2233{ 3553{
2234 if (expect_false (ev_is_active (w))) 3554 if (expect_false (ev_is_active (w)))
2235 return; 3555 return;
3556
3557 EV_FREQUENT_CHECK;
2236 3558
2237 ev_start (EV_A_ (W)w, ++forkcnt); 3559 ev_start (EV_A_ (W)w, ++forkcnt);
2238 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 3560 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2239 forks [forkcnt - 1] = w; 3561 forks [forkcnt - 1] = w;
3562
3563 EV_FREQUENT_CHECK;
2240} 3564}
2241 3565
2242void 3566void
2243ev_fork_stop (EV_P_ ev_fork *w) 3567ev_fork_stop (EV_P_ ev_fork *w)
2244{ 3568{
2245 clear_pending (EV_A_ (W)w); 3569 clear_pending (EV_A_ (W)w);
2246 if (expect_false (!ev_is_active (w))) 3570 if (expect_false (!ev_is_active (w)))
2247 return; 3571 return;
2248 3572
3573 EV_FREQUENT_CHECK;
3574
2249 { 3575 {
2250 int active = ((W)w)->active; 3576 int active = ev_active (w);
3577
2251 forks [active - 1] = forks [--forkcnt]; 3578 forks [active - 1] = forks [--forkcnt];
2252 ((W)forks [active - 1])->active = active; 3579 ev_active (forks [active - 1]) = active;
2253 } 3580 }
2254 3581
2255 ev_stop (EV_A_ (W)w); 3582 ev_stop (EV_A_ (W)w);
3583
3584 EV_FREQUENT_CHECK;
3585}
3586#endif
3587
3588#if EV_CLEANUP_ENABLE
3589void
3590ev_cleanup_start (EV_P_ ev_cleanup *w)
3591{
3592 if (expect_false (ev_is_active (w)))
3593 return;
3594
3595 EV_FREQUENT_CHECK;
3596
3597 ev_start (EV_A_ (W)w, ++cleanupcnt);
3598 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
3599 cleanups [cleanupcnt - 1] = w;
3600
3601 /* cleanup watchers should never keep a refcount on the loop */
3602 ev_unref (EV_A);
3603 EV_FREQUENT_CHECK;
3604}
3605
3606void
3607ev_cleanup_stop (EV_P_ ev_cleanup *w)
3608{
3609 clear_pending (EV_A_ (W)w);
3610 if (expect_false (!ev_is_active (w)))
3611 return;
3612
3613 EV_FREQUENT_CHECK;
3614 ev_ref (EV_A);
3615
3616 {
3617 int active = ev_active (w);
3618
3619 cleanups [active - 1] = cleanups [--cleanupcnt];
3620 ev_active (cleanups [active - 1]) = active;
3621 }
3622
3623 ev_stop (EV_A_ (W)w);
3624
3625 EV_FREQUENT_CHECK;
3626}
3627#endif
3628
3629#if EV_ASYNC_ENABLE
3630void
3631ev_async_start (EV_P_ ev_async *w)
3632{
3633 if (expect_false (ev_is_active (w)))
3634 return;
3635
3636 w->sent = 0;
3637
3638 evpipe_init (EV_A);
3639
3640 EV_FREQUENT_CHECK;
3641
3642 ev_start (EV_A_ (W)w, ++asynccnt);
3643 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
3644 asyncs [asynccnt - 1] = w;
3645
3646 EV_FREQUENT_CHECK;
3647}
3648
3649void
3650ev_async_stop (EV_P_ ev_async *w)
3651{
3652 clear_pending (EV_A_ (W)w);
3653 if (expect_false (!ev_is_active (w)))
3654 return;
3655
3656 EV_FREQUENT_CHECK;
3657
3658 {
3659 int active = ev_active (w);
3660
3661 asyncs [active - 1] = asyncs [--asynccnt];
3662 ev_active (asyncs [active - 1]) = active;
3663 }
3664
3665 ev_stop (EV_A_ (W)w);
3666
3667 EV_FREQUENT_CHECK;
3668}
3669
3670void
3671ev_async_send (EV_P_ ev_async *w)
3672{
3673 w->sent = 1;
3674 evpipe_write (EV_A_ &async_pending);
2256} 3675}
2257#endif 3676#endif
2258 3677
2259/*****************************************************************************/ 3678/*****************************************************************************/
2260 3679
… …
2270once_cb (EV_P_ struct ev_once *once, int revents) 3689once_cb (EV_P_ struct ev_once *once, int revents)
2271{ 3690{
2272 void (*cb)(int revents, void *arg) = once->cb; 3691 void (*cb)(int revents, void *arg) = once->cb;
2273 void *arg = once->arg; 3692 void *arg = once->arg;
2274 3693
2275 ev_io_stop (EV_A_ &once->io); 3694 ev_io_stop (EV_A_ &once->io);
2276 ev_timer_stop (EV_A_ &once->to); 3695 ev_timer_stop (EV_A_ &once->to);
2277 ev_free (once); 3696 ev_free (once);
2278 3697
2279 cb (revents, arg); 3698 cb (revents, arg);
2280} 3699}
2281 3700
2282static void 3701static void
2283once_cb_io (EV_P_ ev_io *w, int revents) 3702once_cb_io (EV_P_ ev_io *w, int revents)
2284{ 3703{
2285 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 3704 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
3705
3706 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2286} 3707}
2287 3708
2288static void 3709static void
2289once_cb_to (EV_P_ ev_timer *w, int revents) 3710once_cb_to (EV_P_ ev_timer *w, int revents)
2290{ 3711{
2291 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 3712 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
3713
3714 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2292} 3715}
2293 3716
2294void 3717void
2295ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 3718ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2296{ 3719{
2297 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 3720 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
2298 3721
2299 if (expect_false (!once)) 3722 if (expect_false (!once))
2300 { 3723 {
2301 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 3724 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
2302 return; 3725 return;
2303 } 3726 }
2304 3727
2305 once->cb = cb; 3728 once->cb = cb;
2306 once->arg = arg; 3729 once->arg = arg;
… …
2318 ev_timer_set (&once->to, timeout, 0.); 3741 ev_timer_set (&once->to, timeout, 0.);
2319 ev_timer_start (EV_A_ &once->to); 3742 ev_timer_start (EV_A_ &once->to);
2320 } 3743 }
2321} 3744}
2322 3745
2323#ifdef __cplusplus 3746/*****************************************************************************/
2324} 3747
3748#if EV_WALK_ENABLE
3749void
3750ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3751{
3752 int i, j;
3753 ev_watcher_list *wl, *wn;
3754
3755 if (types & (EV_IO | EV_EMBED))
3756 for (i = 0; i < anfdmax; ++i)
3757 for (wl = anfds [i].head; wl; )
3758 {
3759 wn = wl->next;
3760
3761#if EV_EMBED_ENABLE
3762 if (ev_cb ((ev_io *)wl) == embed_io_cb)
3763 {
3764 if (types & EV_EMBED)
3765 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
3766 }
3767 else
3768#endif
3769#if EV_USE_INOTIFY
3770 if (ev_cb ((ev_io *)wl) == infy_cb)
3771 ;
3772 else
3773#endif
3774 if ((ev_io *)wl != &pipe_w)
3775 if (types & EV_IO)
3776 cb (EV_A_ EV_IO, wl);
3777
3778 wl = wn;
3779 }
3780
3781 if (types & (EV_TIMER | EV_STAT))
3782 for (i = timercnt + HEAP0; i-- > HEAP0; )
3783#if EV_STAT_ENABLE
3784 /*TODO: timer is not always active*/
3785 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
3786 {
3787 if (types & EV_STAT)
3788 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
3789 }
3790 else
3791#endif
3792 if (types & EV_TIMER)
3793 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
3794
3795#if EV_PERIODIC_ENABLE
3796 if (types & EV_PERIODIC)
3797 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
3798 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3799#endif
3800
3801#if EV_IDLE_ENABLE
3802 if (types & EV_IDLE)
3803 for (j = NUMPRI; i--; )
3804 for (i = idlecnt [j]; i--; )
3805 cb (EV_A_ EV_IDLE, idles [j][i]);
3806#endif
3807
3808#if EV_FORK_ENABLE
3809 if (types & EV_FORK)
3810 for (i = forkcnt; i--; )
3811 if (ev_cb (forks [i]) != embed_fork_cb)
3812 cb (EV_A_ EV_FORK, forks [i]);
3813#endif
3814
3815#if EV_ASYNC_ENABLE
3816 if (types & EV_ASYNC)
3817 for (i = asynccnt; i--; )
3818 cb (EV_A_ EV_ASYNC, asyncs [i]);
3819#endif
3820
3821#if EV_PREPARE_ENABLE
3822 if (types & EV_PREPARE)
3823 for (i = preparecnt; i--; )
3824# if EV_EMBED_ENABLE
3825 if (ev_cb (prepares [i]) != embed_prepare_cb)
2325#endif 3826# endif
3827 cb (EV_A_ EV_PREPARE, prepares [i]);
3828#endif
2326 3829
3830#if EV_CHECK_ENABLE
3831 if (types & EV_CHECK)
3832 for (i = checkcnt; i--; )
3833 cb (EV_A_ EV_CHECK, checks [i]);
3834#endif
3835
3836#if EV_SIGNAL_ENABLE
3837 if (types & EV_SIGNAL)
3838 for (i = 0; i < EV_NSIG - 1; ++i)
3839 for (wl = signals [i].head; wl; )
3840 {
3841 wn = wl->next;
3842 cb (EV_A_ EV_SIGNAL, wl);
3843 wl = wn;
3844 }
3845#endif
3846
3847#if EV_CHILD_ENABLE
3848 if (types & EV_CHILD)
3849 for (i = (EV_PID_HASHSIZE); i--; )
3850 for (wl = childs [i]; wl; )
3851 {
3852 wn = wl->next;
3853 cb (EV_A_ EV_CHILD, wl);
3854 wl = wn;
3855 }
3856#endif
3857/* EV_STAT 0x00001000 /* stat data changed */
3858/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3859}
3860#endif
3861
3862#if EV_MULTIPLICITY
3863 #include "ev_wrap.h"
3864#endif
3865
3866EV_CPP(})
3867

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