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Comparing libev/ev.c (file contents):
Revision 1.155 by root, Wed Nov 28 17:32:24 2007 UTC vs.
Revision 1.361 by root, Sun Oct 24 19:01:01 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
… …
202#ifndef CLOCK_REALTIME 370#ifndef CLOCK_REALTIME
203# undef EV_USE_REALTIME 371# undef EV_USE_REALTIME
204# define EV_USE_REALTIME 0 372# define EV_USE_REALTIME 0
205#endif 373#endif
206 374
375#if !EV_STAT_ENABLE
376# undef EV_USE_INOTIFY
377# define EV_USE_INOTIFY 0
378#endif
379
380#if !EV_USE_NANOSLEEP
381# ifndef _WIN32
382# include <sys/select.h>
383# endif
384#endif
385
386#if EV_USE_INOTIFY
387# include <sys/statfs.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
394#endif
395
207#if EV_SELECT_IS_WINSOCKET 396#if EV_SELECT_IS_WINSOCKET
208# include <winsock.h> 397# include <winsock.h>
209#endif 398#endif
210 399
211#if !EV_STAT_ENABLE 400#if EV_USE_EVENTFD
212# define EV_USE_INOTIFY 0 401/* 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
213#endif 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
214 415
215#if EV_USE_INOTIFY 416#if EV_USE_SIGNALFD
417/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
216# include <sys/inotify.h> 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};
217#endif 436#endif
218 437
219/**/ 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
445
446/*
447 * This is used to avoid floating point rounding problems.
448 * It is added to ev_rt_now when scheduling periodics
449 * to ensure progress, time-wise, even when rounding
450 * errors are against us.
451 * This value is good at least till the year 4000.
452 * Better solutions welcome.
453 */
454#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
220 455
221#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) */
222#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) */
223/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */
224 458
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)
461
225#if __GNUC__ >= 3 462#if __GNUC__ >= 4
226# define expect(expr,value) __builtin_expect ((expr),(value)) 463# define expect(expr,value) __builtin_expect ((expr),(value))
227# define inline_size static inline /* inline for codesize */
228# if EV_MINIMAL
229# define noinline __attribute__ ((noinline)) 464# define noinline __attribute__ ((noinline))
230# define inline_speed static noinline
231# else
232# define noinline
233# define inline_speed static inline
234# endif
235#else 465#else
236# define expect(expr,value) (expr) 466# define expect(expr,value) (expr)
237# define inline_speed static
238# define inline_size static
239# define noinline 467# define noinline
468# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
469# define inline
470# endif
240#endif 471#endif
241 472
242#define expect_false(expr) expect ((expr) != 0, 0) 473#define expect_false(expr) expect ((expr) != 0, 0)
243#define expect_true(expr) expect ((expr) != 0, 1) 474#define expect_true(expr) expect ((expr) != 0, 1)
475#define inline_size static inline
244 476
477#if EV_FEATURE_CODE
478# define inline_speed static inline
479#else
480# define inline_speed static noinline
481#endif
482
245#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 483#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
484
485#if EV_MINPRI == EV_MAXPRI
486# define ABSPRI(w) (((W)w), 0)
487#else
246#define ABSPRI(w) ((w)->priority - EV_MINPRI) 488# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
489#endif
247 490
248#define EMPTY0 /* required for microsofts broken pseudo-c compiler */ 491#define EMPTY /* required for microsofts broken pseudo-c compiler */
249#define EMPTY2(a,b) /* used to suppress some warnings */ 492#define EMPTY2(a,b) /* used to suppress some warnings */
250 493
251typedef ev_watcher *W; 494typedef ev_watcher *W;
252typedef ev_watcher_list *WL; 495typedef ev_watcher_list *WL;
253typedef ev_watcher_time *WT; 496typedef ev_watcher_time *WT;
254 497
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
255static 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
256 520
257#ifdef _WIN32 521#ifdef _WIN32
258# include "ev_win32.c" 522# include "ev_win32.c"
259#endif 523#endif
260 524
261/*****************************************************************************/ 525/*****************************************************************************/
262 526
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
263static void (*syserr_cb)(const char *msg); 577static void (*syserr_cb)(const char *msg);
264 578
265void 579void
266ev_set_syserr_cb (void (*cb)(const char *msg)) 580ev_set_syserr_cb (void (*cb)(const char *msg))
267{ 581{
268 syserr_cb = cb; 582 syserr_cb = cb;
269} 583}
270 584
271static void noinline 585static void noinline
272syserr (const char *msg) 586ev_syserr (const char *msg)
273{ 587{
274 if (!msg) 588 if (!msg)
275 msg = "(libev) system error"; 589 msg = "(libev) system error";
276 590
277 if (syserr_cb) 591 if (syserr_cb)
278 syserr_cb (msg); 592 syserr_cb (msg);
279 else 593 else
280 { 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
281 perror (msg); 603 perror (msg);
604#endif
282 abort (); 605 abort ();
283 } 606 }
284} 607}
285 608
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
286static void *(*alloc)(void *ptr, long size); 628static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
287 629
288void 630void
289ev_set_allocator (void *(*cb)(void *ptr, long size)) 631ev_set_allocator (void *(*cb)(void *ptr, long size))
290{ 632{
291 alloc = cb; 633 alloc = cb;
292} 634}
293 635
294inline_speed void * 636inline_speed void *
295ev_realloc (void *ptr, long size) 637ev_realloc (void *ptr, long size)
296{ 638{
297 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); 639 ptr = alloc (ptr, size);
298 640
299 if (!ptr && size) 641 if (!ptr && size)
300 { 642 {
643#if EV_AVOID_STDIO
644 ev_printerr ("libev: memory allocation failed, aborting.\n");
645#else
301 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 646 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
647#endif
302 abort (); 648 abort ();
303 } 649 }
304 650
305 return ptr; 651 return ptr;
306} 652}
… …
308#define ev_malloc(size) ev_realloc (0, (size)) 654#define ev_malloc(size) ev_realloc (0, (size))
309#define ev_free(ptr) ev_realloc ((ptr), 0) 655#define ev_free(ptr) ev_realloc ((ptr), 0)
310 656
311/*****************************************************************************/ 657/*****************************************************************************/
312 658
659/* set in reify when reification needed */
660#define EV_ANFD_REIFY 1
661
662/* file descriptor info structure */
313typedef struct 663typedef struct
314{ 664{
315 WL head; 665 WL head;
316 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 */
317 unsigned char reify; 669 unsigned char unused;
670#if EV_USE_EPOLL
671 unsigned int egen; /* generation counter to counter epoll bugs */
672#endif
318#if EV_SELECT_IS_WINSOCKET 673#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
319 SOCKET handle; 674 SOCKET handle;
320#endif 675#endif
676#if EV_USE_IOCP
677 OVERLAPPED or, ow;
678#endif
321} ANFD; 679} ANFD;
322 680
681/* stores the pending event set for a given watcher */
323typedef struct 682typedef struct
324{ 683{
325 W w; 684 W w;
326 int events; 685 int events; /* the pending event set for the given watcher */
327} ANPENDING; 686} ANPENDING;
328 687
329#if EV_USE_INOTIFY 688#if EV_USE_INOTIFY
689/* hash table entry per inotify-id */
330typedef struct 690typedef struct
331{ 691{
332 WL head; 692 WL head;
333} 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)
334#endif 714#endif
335 715
336#if EV_MULTIPLICITY 716#if EV_MULTIPLICITY
337 717
338 struct ev_loop 718 struct ev_loop
… …
357 737
358 static int ev_default_loop_ptr; 738 static int ev_default_loop_ptr;
359 739
360#endif 740#endif
361 741
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
362/*****************************************************************************/ 754/*****************************************************************************/
363 755
756#ifndef EV_HAVE_EV_TIME
364ev_tstamp 757ev_tstamp
365ev_time (void) 758ev_time (void)
366{ 759{
367#if EV_USE_REALTIME 760#if EV_USE_REALTIME
761 if (expect_true (have_realtime))
762 {
368 struct timespec ts; 763 struct timespec ts;
369 clock_gettime (CLOCK_REALTIME, &ts); 764 clock_gettime (CLOCK_REALTIME, &ts);
370 return ts.tv_sec + ts.tv_nsec * 1e-9; 765 return ts.tv_sec + ts.tv_nsec * 1e-9;
371#else 766 }
767#endif
768
372 struct timeval tv; 769 struct timeval tv;
373 gettimeofday (&tv, 0); 770 gettimeofday (&tv, 0);
374 return tv.tv_sec + tv.tv_usec * 1e-6; 771 return tv.tv_sec + tv.tv_usec * 1e-6;
375#endif
376} 772}
773#endif
377 774
378ev_tstamp inline_size 775inline_size ev_tstamp
379get_clock (void) 776get_clock (void)
380{ 777{
381#if EV_USE_MONOTONIC 778#if EV_USE_MONOTONIC
382 if (expect_true (have_monotonic)) 779 if (expect_true (have_monotonic))
383 { 780 {
… …
396{ 793{
397 return ev_rt_now; 794 return ev_rt_now;
398} 795}
399#endif 796#endif
400 797
401#define array_roundsize(type,n) (((n) | 4) & ~3) 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
829array_nextsize (int elem, int cur, int cnt)
830{
831 int ncur = cur + 1;
832
833 do
834 ncur <<= 1;
835 while (cnt > ncur);
836
837 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */
838 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
839 {
840 ncur *= elem;
841 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
842 ncur = ncur - sizeof (void *) * 4;
843 ncur /= elem;
844 }
845
846 return ncur;
847}
848
849static noinline void *
850array_realloc (int elem, void *base, int *cur, int cnt)
851{
852 *cur = array_nextsize (elem, *cur, cnt);
853 return ev_realloc (base, elem * *cur);
854}
855
856#define array_init_zero(base,count) \
857 memset ((void *)(base), 0, sizeof (*(base)) * (count))
402 858
403#define array_needsize(type,base,cur,cnt,init) \ 859#define array_needsize(type,base,cur,cnt,init) \
404 if (expect_false ((cnt) > cur)) \ 860 if (expect_false ((cnt) > (cur))) \
405 { \ 861 { \
406 int newcnt = cur; \ 862 int ocur_ = (cur); \
407 do \ 863 (base) = (type *)array_realloc \
408 { \ 864 (sizeof (type), (base), &(cur), (cnt)); \
409 newcnt = array_roundsize (type, newcnt << 1); \ 865 init ((base) + (ocur_), (cur) - ocur_); \
410 } \
411 while ((cnt) > newcnt); \
412 \
413 base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
414 init (base + cur, newcnt - cur); \
415 cur = newcnt; \
416 } 866 }
417 867
868#if 0
418#define array_slim(type,stem) \ 869#define array_slim(type,stem) \
419 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 870 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
420 { \ 871 { \
421 stem ## max = array_roundsize (stem ## cnt >> 1); \ 872 stem ## max = array_roundsize (stem ## cnt >> 1); \
422 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ 873 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
423 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 874 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
424 } 875 }
876#endif
425 877
426#define array_free(stem, idx) \ 878#define array_free(stem, idx) \
427 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
428 880
429/*****************************************************************************/ 881/*****************************************************************************/
882
883/* dummy callback for pending events */
884static void noinline
885pendingcb (EV_P_ ev_prepare *w, int revents)
886{
887}
430 888
431void noinline 889void noinline
432ev_feed_event (EV_P_ void *w, int revents) 890ev_feed_event (EV_P_ void *w, int revents)
433{ 891{
434 W w_ = (W)w; 892 W w_ = (W)w;
893 int pri = ABSPRI (w_);
435 894
436 if (expect_false (w_->pending)) 895 if (expect_false (w_->pending))
896 pendings [pri][w_->pending - 1].events |= revents;
897 else
437 { 898 {
899 w_->pending = ++pendingcnt [pri];
900 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
901 pendings [pri][w_->pending - 1].w = w_;
438 pendings [ABSPRI (w_)][w_->pending - 1].events |= revents; 902 pendings [pri][w_->pending - 1].events = revents;
439 return;
440 } 903 }
441
442 w_->pending = ++pendingcnt [ABSPRI (w_)];
443 array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
444 pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
445 pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
446} 904}
447 905
448void inline_size 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
449queue_events (EV_P_ W *events, int eventcnt, int type) 922queue_events (EV_P_ W *events, int eventcnt, int type)
450{ 923{
451 int i; 924 int i;
452 925
453 for (i = 0; i < eventcnt; ++i) 926 for (i = 0; i < eventcnt; ++i)
454 ev_feed_event (EV_A_ events [i], type); 927 ev_feed_event (EV_A_ events [i], type);
455} 928}
456 929
457/*****************************************************************************/ 930/*****************************************************************************/
458 931
459void inline_size 932inline_speed void
460anfds_init (ANFD *base, int count)
461{
462 while (count--)
463 {
464 base->head = 0;
465 base->events = EV_NONE;
466 base->reify = 0;
467
468 ++base;
469 }
470}
471
472void inline_speed
473fd_event (EV_P_ int fd, int revents) 933fd_event_nocheck (EV_P_ int fd, int revents)
474{ 934{
475 ANFD *anfd = anfds + fd; 935 ANFD *anfd = anfds + fd;
476 ev_io *w; 936 ev_io *w;
477 937
478 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)
… …
482 if (ev) 942 if (ev)
483 ev_feed_event (EV_A_ (W)w, ev); 943 ev_feed_event (EV_A_ (W)w, ev);
484 } 944 }
485} 945}
486 946
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
487void 958void
488ev_feed_fd_event (EV_P_ int fd, int revents) 959ev_feed_fd_event (EV_P_ int fd, int revents)
489{ 960{
961 if (fd >= 0 && fd < anfdmax)
490 fd_event (EV_A_ fd, revents); 962 fd_event_nocheck (EV_A_ fd, revents);
491} 963}
492 964
493void inline_size 965/* make sure the external fd watch events are in-sync */
966/* with the kernel/libev internal state */
967inline_size void
494fd_reify (EV_P) 968fd_reify (EV_P)
495{ 969{
496 int i; 970 int i;
497 971
498 for (i = 0; i < fdchangecnt; ++i) 972 for (i = 0; i < fdchangecnt; ++i)
499 { 973 {
500 int fd = fdchanges [i]; 974 int fd = fdchanges [i];
501 ANFD *anfd = anfds + fd; 975 ANFD *anfd = anfds + fd;
502 ev_io *w; 976 ev_io *w;
503 977
504 int events = 0; 978 unsigned char o_events = anfd->events;
979 unsigned char o_reify = anfd->reify;
505 980
506 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 981 anfd->reify = 0;
507 events |= w->events;
508 982
509#if EV_SELECT_IS_WINSOCKET 983#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
510 if (events) 984 if (o_reify & EV__IOFDSET)
511 { 985 {
512 unsigned long argp; 986 unsigned long arg;
513 anfd->handle = _get_osfhandle (fd); 987 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
514 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
515 } 990 }
516#endif 991#endif
517 992
518 anfd->reify = 0; 993 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
994 {
995 anfd->events = 0;
519 996
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)
520 backend_modify (EV_A_ fd, anfd->events, events); 1005 backend_modify (EV_A_ fd, o_events, anfd->events);
521 anfd->events = events;
522 } 1006 }
523 1007
524 fdchangecnt = 0; 1008 fdchangecnt = 0;
525} 1009}
526 1010
527void inline_size 1011/* something about the given fd changed */
1012inline_size void
528fd_change (EV_P_ int fd) 1013fd_change (EV_P_ int fd, int flags)
529{ 1014{
530 if (expect_false (anfds [fd].reify)) 1015 unsigned char reify = anfds [fd].reify;
531 return;
532
533 anfds [fd].reify = 1; 1016 anfds [fd].reify |= flags;
534 1017
1018 if (expect_true (!reify))
1019 {
535 ++fdchangecnt; 1020 ++fdchangecnt;
536 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 1021 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
537 fdchanges [fdchangecnt - 1] = fd; 1022 fdchanges [fdchangecnt - 1] = fd;
1023 }
538} 1024}
539 1025
540void inline_speed 1026/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1027inline_speed void
541fd_kill (EV_P_ int fd) 1028fd_kill (EV_P_ int fd)
542{ 1029{
543 ev_io *w; 1030 ev_io *w;
544 1031
545 while ((w = (ev_io *)anfds [fd].head)) 1032 while ((w = (ev_io *)anfds [fd].head))
… …
547 ev_io_stop (EV_A_ w); 1034 ev_io_stop (EV_A_ w);
548 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);
549 } 1036 }
550} 1037}
551 1038
552int inline_size 1039/* check whether the given fd is actually valid, for error recovery */
1040inline_size int
553fd_valid (int fd) 1041fd_valid (int fd)
554{ 1042{
555#ifdef _WIN32 1043#ifdef _WIN32
556 return _get_osfhandle (fd) != -1; 1044 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
557#else 1045#else
558 return fcntl (fd, F_GETFD) != -1; 1046 return fcntl (fd, F_GETFD) != -1;
559#endif 1047#endif
560} 1048}
561 1049
… …
565{ 1053{
566 int fd; 1054 int fd;
567 1055
568 for (fd = 0; fd < anfdmax; ++fd) 1056 for (fd = 0; fd < anfdmax; ++fd)
569 if (anfds [fd].events) 1057 if (anfds [fd].events)
570 if (!fd_valid (fd) == -1 && errno == EBADF) 1058 if (!fd_valid (fd) && errno == EBADF)
571 fd_kill (EV_A_ fd); 1059 fd_kill (EV_A_ fd);
572} 1060}
573 1061
574/* 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 */
575static void noinline 1063static void noinline
… …
579 1067
580 for (fd = anfdmax; fd--; ) 1068 for (fd = anfdmax; fd--; )
581 if (anfds [fd].events) 1069 if (anfds [fd].events)
582 { 1070 {
583 fd_kill (EV_A_ fd); 1071 fd_kill (EV_A_ fd);
584 return; 1072 break;
585 } 1073 }
586} 1074}
587 1075
588/* 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 */
589static void noinline 1077static void noinline
590fd_rearm_all (EV_P) 1078fd_rearm_all (EV_P)
591{ 1079{
592 int fd; 1080 int fd;
593 1081
594 /* this should be highly optimised to not do anything but set a flag */
595 for (fd = 0; fd < anfdmax; ++fd) 1082 for (fd = 0; fd < anfdmax; ++fd)
596 if (anfds [fd].events) 1083 if (anfds [fd].events)
597 { 1084 {
598 anfds [fd].events = 0; 1085 anfds [fd].events = 0;
599 fd_change (EV_A_ fd); 1086 anfds [fd].emask = 0;
1087 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
600 } 1088 }
601} 1089}
602 1090
603/*****************************************************************************/ 1091/* used to prepare libev internal fd's */
604 1092/* this is not fork-safe */
605void inline_speed 1093inline_speed void
606upheap (WT *heap, int k)
607{
608 WT w = heap [k];
609
610 while (k && heap [k >> 1]->at > w->at)
611 {
612 heap [k] = heap [k >> 1];
613 ((W)heap [k])->active = k + 1;
614 k >>= 1;
615 }
616
617 heap [k] = w;
618 ((W)heap [k])->active = k + 1;
619
620}
621
622void inline_speed
623downheap (WT *heap, int N, int k)
624{
625 WT w = heap [k];
626
627 while (k < (N >> 1))
628 {
629 int j = k << 1;
630
631 if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
632 ++j;
633
634 if (w->at <= heap [j]->at)
635 break;
636
637 heap [k] = heap [j];
638 ((W)heap [k])->active = k + 1;
639 k = j;
640 }
641
642 heap [k] = w;
643 ((W)heap [k])->active = k + 1;
644}
645
646void inline_size
647adjustheap (WT *heap, int N, int k)
648{
649 upheap (heap, k);
650 downheap (heap, N, k);
651}
652
653/*****************************************************************************/
654
655typedef struct
656{
657 WL head;
658 sig_atomic_t volatile gotsig;
659} ANSIG;
660
661static ANSIG *signals;
662static int signalmax;
663
664static int sigpipe [2];
665static sig_atomic_t volatile gotsig;
666static ev_io sigev;
667
668void inline_size
669signals_init (ANSIG *base, int count)
670{
671 while (count--)
672 {
673 base->head = 0;
674 base->gotsig = 0;
675
676 ++base;
677 }
678}
679
680static void
681sighandler (int signum)
682{
683#if _WIN32
684 signal (signum, sighandler);
685#endif
686
687 signals [signum - 1].gotsig = 1;
688
689 if (!gotsig)
690 {
691 int old_errno = errno;
692 gotsig = 1;
693 write (sigpipe [1], &signum, 1);
694 errno = old_errno;
695 }
696}
697
698void noinline
699ev_feed_signal_event (EV_P_ int signum)
700{
701 WL w;
702
703#if EV_MULTIPLICITY
704 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
705#endif
706
707 --signum;
708
709 if (signum < 0 || signum >= signalmax)
710 return;
711
712 signals [signum].gotsig = 0;
713
714 for (w = signals [signum].head; w; w = w->next)
715 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
716}
717
718static void
719sigcb (EV_P_ ev_io *iow, int revents)
720{
721 int signum;
722
723 read (sigpipe [0], &revents, 1);
724 gotsig = 0;
725
726 for (signum = signalmax; signum--; )
727 if (signals [signum].gotsig)
728 ev_feed_signal_event (EV_A_ signum + 1);
729}
730
731void inline_size
732fd_intern (int fd) 1094fd_intern (int fd)
733{ 1095{
734#ifdef _WIN32 1096#ifdef _WIN32
735 int arg = 1; 1097 unsigned long arg = 1;
736 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 1098 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
737#else 1099#else
738 fcntl (fd, F_SETFD, FD_CLOEXEC); 1100 fcntl (fd, F_SETFD, FD_CLOEXEC);
739 fcntl (fd, F_SETFL, O_NONBLOCK); 1101 fcntl (fd, F_SETFL, O_NONBLOCK);
740#endif 1102#endif
741} 1103}
742 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
743static void noinline 1268static void noinline
744siginit (EV_P) 1269evpipe_init (EV_P)
745{ 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
746 fd_intern (sigpipe [0]); 1290 fd_intern (evpipe [0]);
747 fd_intern (sigpipe [1]); 1291 fd_intern (evpipe [1]);
1292 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1293 }
748 1294
749 ev_io_set (&sigev, sigpipe [0], EV_READ);
750 ev_io_start (EV_A_ &sigev); 1295 ev_io_start (EV_A_ &pipe_w);
751 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
752} 1372}
753 1373
754/*****************************************************************************/ 1374/*****************************************************************************/
755 1375
756static ev_child *childs [EV_PID_HASHSIZE]; 1376static void
1377ev_sighandler (int signum)
1378{
1379#if EV_MULTIPLICITY
1380 EV_P = signals [signum - 1].loop;
1381#endif
757 1382
758#ifndef _WIN32 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
1440static WL childs [EV_PID_HASHSIZE];
759 1441
760static ev_signal childev; 1442static ev_signal childev;
761 1443
762void inline_speed 1444#ifndef WIFCONTINUED
1445# define WIFCONTINUED(status) 0
1446#endif
1447
1448/* handle a single child status event */
1449inline_speed void
763child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status) 1450child_reap (EV_P_ int chain, int pid, int status)
764{ 1451{
765 ev_child *w; 1452 ev_child *w;
1453 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
766 1454
767 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 {
768 if (w->pid == pid || !w->pid) 1457 if ((w->pid == pid || !w->pid)
1458 && (!traced || (w->flags & 1)))
769 { 1459 {
770 ev_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 */
771 w->rpid = pid; 1461 w->rpid = pid;
772 w->rstatus = status; 1462 w->rstatus = status;
773 ev_feed_event (EV_A_ (W)w, EV_CHILD); 1463 ev_feed_event (EV_A_ (W)w, EV_CHILD);
774 } 1464 }
1465 }
775} 1466}
776 1467
777#ifndef WCONTINUED 1468#ifndef WCONTINUED
778# define WCONTINUED 0 1469# define WCONTINUED 0
779#endif 1470#endif
780 1471
1472/* called on sigchld etc., calls waitpid */
781static void 1473static void
782childcb (EV_P_ ev_signal *sw, int revents) 1474childcb (EV_P_ ev_signal *sw, int revents)
783{ 1475{
784 int pid, status; 1476 int pid, status;
785 1477
… …
788 if (!WCONTINUED 1480 if (!WCONTINUED
789 || errno != EINVAL 1481 || errno != EINVAL
790 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED))) 1482 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
791 return; 1483 return;
792 1484
793 /* 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 */
794 /* 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 */
795 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1487 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
796 1488
797 child_reap (EV_A_ sw, pid, pid, status); 1489 child_reap (EV_A_ pid, pid, status);
798 if (EV_PID_HASHSIZE > 1) 1490 if ((EV_PID_HASHSIZE) > 1)
799 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 */
800} 1492}
801 1493
802#endif 1494#endif
803 1495
804/*****************************************************************************/ 1496/*****************************************************************************/
805 1497
1498#if EV_USE_IOCP
1499# include "ev_iocp.c"
1500#endif
806#if EV_USE_PORT 1501#if EV_USE_PORT
807# include "ev_port.c" 1502# include "ev_port.c"
808#endif 1503#endif
809#if EV_USE_KQUEUE 1504#if EV_USE_KQUEUE
810# include "ev_kqueue.c" 1505# include "ev_kqueue.c"
… …
866 /* kqueue is borked on everything but netbsd apparently */ 1561 /* kqueue is borked on everything but netbsd apparently */
867 /* 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 */
868 flags &= ~EVBACKEND_KQUEUE; 1563 flags &= ~EVBACKEND_KQUEUE;
869#endif 1564#endif
870#ifdef __APPLE__ 1565#ifdef __APPLE__
871 // flags &= ~EVBACKEND_KQUEUE; for documentation 1566 /* only select works correctly on that "unix-certified" platform */
872 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) */
873#endif 1572#endif
874 1573
875 return flags; 1574 return flags;
876} 1575}
877 1576
878unsigned int 1577unsigned int
879ev_embeddable_backends (void) 1578ev_embeddable_backends (void)
880{ 1579{
881 return EVBACKEND_EPOLL 1580 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
882 | EVBACKEND_KQUEUE 1581
883 | 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;
884} 1587}
885 1588
886unsigned int 1589unsigned int
887ev_backend (EV_P) 1590ev_backend (EV_P)
888{ 1591{
889 return backend; 1592 return backend;
890} 1593}
891 1594
1595#if EV_FEATURE_API
1596unsigned int
1597ev_iteration (EV_P)
1598{
1599 return loop_count;
1600}
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 */
892static void noinline 1645static void noinline
893loop_init (EV_P_ unsigned int flags) 1646loop_init (EV_P_ unsigned int flags)
894{ 1647{
895 if (!backend) 1648 if (!backend)
896 { 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
897#if EV_USE_MONOTONIC 1660#if EV_USE_MONOTONIC
1661 if (!have_monotonic)
898 { 1662 {
899 struct timespec ts; 1663 struct timespec ts;
1664
900 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1665 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
901 have_monotonic = 1; 1666 have_monotonic = 1;
902 } 1667 }
903#endif 1668#endif
904 1669
905 ev_rt_now = ev_time (); 1670 /* pid check not overridable via env */
906 mn_now = get_clock (); 1671#ifndef _WIN32
907 now_floor = mn_now; 1672 if (flags & EVFLAG_FORKCHECK)
908 rtmn_diff = ev_rt_now - mn_now; 1673 curpid = getpid ();
1674#endif
909 1675
910 if (!(flags & EVFLAG_NOENV) 1676 if (!(flags & EVFLAG_NOENV)
911 && !enable_secure () 1677 && !enable_secure ()
912 && getenv ("LIBEV_FLAGS")) 1678 && getenv ("LIBEV_FLAGS"))
913 flags = atoi (getenv ("LIBEV_FLAGS")); 1679 flags = atoi (getenv ("LIBEV_FLAGS"));
914 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
915 if (!(flags & 0x0000ffffUL)) 1704 if (!(flags & 0x0000ffffU))
916 flags |= ev_recommended_backends (); 1705 flags |= ev_recommended_backends ();
917 1706
918 backend = 0;
919 backend_fd = -1;
920#if EV_USE_INOTIFY 1707#if EV_USE_IOCP
921 fs_fd = -2; 1708 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
922#endif 1709#endif
923
924#if EV_USE_PORT 1710#if EV_USE_PORT
925 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1711 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
926#endif 1712#endif
927#if EV_USE_KQUEUE 1713#if EV_USE_KQUEUE
928 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 1714 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
935#endif 1721#endif
936#if EV_USE_SELECT 1722#if EV_USE_SELECT
937 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1723 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
938#endif 1724#endif
939 1725
1726 ev_prepare_init (&pending_w, pendingcb);
1727
1728#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
940 ev_init (&sigev, sigcb); 1729 ev_init (&pipe_w, pipecb);
941 ev_set_priority (&sigev, EV_MAXPRI); 1730 ev_set_priority (&pipe_w, EV_MAXPRI);
1731#endif
942 } 1732 }
943} 1733}
944 1734
945static void noinline 1735/* free up a loop structure */
1736void
946loop_destroy (EV_P) 1737ev_loop_destroy (EV_P)
947{ 1738{
948 int i; 1739 int i;
1740
1741#if EV_CLEANUP_ENABLE
1742 /* queue cleanup watchers (and execute them) */
1743 if (expect_false (cleanupcnt))
1744 {
1745 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
1746 EV_INVOKE_PENDING;
1747 }
1748#endif
1749
1750#if EV_CHILD_ENABLE
1751 if (ev_is_active (&childev))
1752 {
1753 ev_ref (EV_A); /* child watcher */
1754 ev_signal_stop (EV_A_ &childev);
1755 }
1756#endif
1757
1758 if (ev_is_active (&pipe_w))
1759 {
1760 /*ev_ref (EV_A);*/
1761 /*ev_io_stop (EV_A_ &pipe_w);*/
1762
1763#if EV_USE_EVENTFD
1764 if (evfd >= 0)
1765 close (evfd);
1766#endif
1767
1768 if (evpipe [0] >= 0)
1769 {
1770 EV_WIN32_CLOSE_FD (evpipe [0]);
1771 EV_WIN32_CLOSE_FD (evpipe [1]);
1772 }
1773 }
1774
1775#if EV_USE_SIGNALFD
1776 if (ev_is_active (&sigfd_w))
1777 close (sigfd);
1778#endif
949 1779
950#if EV_USE_INOTIFY 1780#if EV_USE_INOTIFY
951 if (fs_fd >= 0) 1781 if (fs_fd >= 0)
952 close (fs_fd); 1782 close (fs_fd);
953#endif 1783#endif
954 1784
955 if (backend_fd >= 0) 1785 if (backend_fd >= 0)
956 close (backend_fd); 1786 close (backend_fd);
957 1787
1788#if EV_USE_IOCP
1789 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
1790#endif
958#if EV_USE_PORT 1791#if EV_USE_PORT
959 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 1792 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
960#endif 1793#endif
961#if EV_USE_KQUEUE 1794#if EV_USE_KQUEUE
962 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 1795 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
970#if EV_USE_SELECT 1803#if EV_USE_SELECT
971 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 1804 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
972#endif 1805#endif
973 1806
974 for (i = NUMPRI; i--; ) 1807 for (i = NUMPRI; i--; )
1808 {
975 array_free (pending, [i]); 1809 array_free (pending, [i]);
1810#if EV_IDLE_ENABLE
1811 array_free (idle, [i]);
1812#endif
1813 }
1814
1815 ev_free (anfds); anfds = 0; anfdmax = 0;
976 1816
977 /* have to use the microsoft-never-gets-it-right macro */ 1817 /* have to use the microsoft-never-gets-it-right macro */
1818 array_free (rfeed, EMPTY);
978 array_free (fdchange, EMPTY0); 1819 array_free (fdchange, EMPTY);
979 array_free (timer, EMPTY0); 1820 array_free (timer, EMPTY);
980#if EV_PERIODIC_ENABLE 1821#if EV_PERIODIC_ENABLE
981 array_free (periodic, EMPTY0); 1822 array_free (periodic, EMPTY);
982#endif 1823#endif
1824#if EV_FORK_ENABLE
1825 array_free (fork, EMPTY);
1826#endif
1827#if EV_CLEANUP_ENABLE
983 array_free (idle, EMPTY0); 1828 array_free (cleanup, EMPTY);
1829#endif
984 array_free (prepare, EMPTY0); 1830 array_free (prepare, EMPTY);
985 array_free (check, EMPTY0); 1831 array_free (check, EMPTY);
1832#if EV_ASYNC_ENABLE
1833 array_free (async, EMPTY);
1834#endif
986 1835
987 backend = 0; 1836 backend = 0;
988}
989 1837
1838#if EV_MULTIPLICITY
1839 if (ev_is_default_loop (EV_A))
1840#endif
1841 ev_default_loop_ptr = 0;
1842#if EV_MULTIPLICITY
1843 else
1844 ev_free (EV_A);
1845#endif
1846}
1847
1848#if EV_USE_INOTIFY
990void inline_size infy_fork (EV_P); 1849inline_size void infy_fork (EV_P);
1850#endif
991 1851
992void inline_size 1852inline_size void
993loop_fork (EV_P) 1853loop_fork (EV_P)
994{ 1854{
995#if EV_USE_PORT 1855#if EV_USE_PORT
996 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1856 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
997#endif 1857#endif
… …
1003#endif 1863#endif
1004#if EV_USE_INOTIFY 1864#if EV_USE_INOTIFY
1005 infy_fork (EV_A); 1865 infy_fork (EV_A);
1006#endif 1866#endif
1007 1867
1008 if (ev_is_active (&sigev)) 1868 if (ev_is_active (&pipe_w))
1009 { 1869 {
1010 /* default loop */ 1870 /* this "locks" the handlers against writing to the pipe */
1871 /* while we modify the fd vars */
1872 sig_pending = 1;
1873#if EV_ASYNC_ENABLE
1874 async_pending = 1;
1875#endif
1011 1876
1012 ev_ref (EV_A); 1877 ev_ref (EV_A);
1013 ev_io_stop (EV_A_ &sigev); 1878 ev_io_stop (EV_A_ &pipe_w);
1014 close (sigpipe [0]);
1015 close (sigpipe [1]);
1016 1879
1017 while (pipe (sigpipe)) 1880#if EV_USE_EVENTFD
1018 syserr ("(libev) error creating pipe"); 1881 if (evfd >= 0)
1882 close (evfd);
1883#endif
1019 1884
1885 if (evpipe [0] >= 0)
1886 {
1887 EV_WIN32_CLOSE_FD (evpipe [0]);
1888 EV_WIN32_CLOSE_FD (evpipe [1]);
1889 }
1890
1891#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1020 siginit (EV_A); 1892 evpipe_init (EV_A);
1893 /* now iterate over everything, in case we missed something */
1894 pipecb (EV_A_ &pipe_w, EV_READ);
1895#endif
1021 } 1896 }
1022 1897
1023 postfork = 0; 1898 postfork = 0;
1024} 1899}
1900
1901#if EV_MULTIPLICITY
1902
1903struct ev_loop *
1904ev_loop_new (unsigned int flags)
1905{
1906 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1907
1908 memset (EV_A, 0, sizeof (struct ev_loop));
1909 loop_init (EV_A_ flags);
1910
1911 if (ev_backend (EV_A))
1912 return EV_A;
1913
1914 ev_free (EV_A);
1915 return 0;
1916}
1917
1918#endif /* multiplicity */
1919
1920#if EV_VERIFY
1921static void noinline
1922verify_watcher (EV_P_ W w)
1923{
1924 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1925
1926 if (w->pending)
1927 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1928}
1929
1930static void noinline
1931verify_heap (EV_P_ ANHE *heap, int N)
1932{
1933 int i;
1934
1935 for (i = HEAP0; i < N + HEAP0; ++i)
1936 {
1937 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1938 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1939 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1940
1941 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1942 }
1943}
1944
1945static void noinline
1946array_verify (EV_P_ W *ws, int cnt)
1947{
1948 while (cnt--)
1949 {
1950 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1951 verify_watcher (EV_A_ ws [cnt]);
1952 }
1953}
1954#endif
1955
1956#if EV_FEATURE_API
1957void
1958ev_verify (EV_P)
1959{
1960#if EV_VERIFY
1961 int i;
1962 WL w;
1963
1964 assert (activecnt >= -1);
1965
1966 assert (fdchangemax >= fdchangecnt);
1967 for (i = 0; i < fdchangecnt; ++i)
1968 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1969
1970 assert (anfdmax >= 0);
1971 for (i = 0; i < anfdmax; ++i)
1972 for (w = anfds [i].head; w; w = w->next)
1973 {
1974 verify_watcher (EV_A_ (W)w);
1975 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1976 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1977 }
1978
1979 assert (timermax >= timercnt);
1980 verify_heap (EV_A_ timers, timercnt);
1981
1982#if EV_PERIODIC_ENABLE
1983 assert (periodicmax >= periodiccnt);
1984 verify_heap (EV_A_ periodics, periodiccnt);
1985#endif
1986
1987 for (i = NUMPRI; i--; )
1988 {
1989 assert (pendingmax [i] >= pendingcnt [i]);
1990#if EV_IDLE_ENABLE
1991 assert (idleall >= 0);
1992 assert (idlemax [i] >= idlecnt [i]);
1993 array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
1994#endif
1995 }
1996
1997#if EV_FORK_ENABLE
1998 assert (forkmax >= forkcnt);
1999 array_verify (EV_A_ (W *)forks, forkcnt);
2000#endif
2001
2002#if EV_CLEANUP_ENABLE
2003 assert (cleanupmax >= cleanupcnt);
2004 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2005#endif
2006
2007#if EV_ASYNC_ENABLE
2008 assert (asyncmax >= asynccnt);
2009 array_verify (EV_A_ (W *)asyncs, asynccnt);
2010#endif
2011
2012#if EV_PREPARE_ENABLE
2013 assert (preparemax >= preparecnt);
2014 array_verify (EV_A_ (W *)prepares, preparecnt);
2015#endif
2016
2017#if EV_CHECK_ENABLE
2018 assert (checkmax >= checkcnt);
2019 array_verify (EV_A_ (W *)checks, checkcnt);
2020#endif
2021
2022# if 0
2023#if EV_CHILD_ENABLE
2024 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
2025 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2026#endif
2027# endif
2028#endif
2029}
2030#endif
1025 2031
1026#if EV_MULTIPLICITY 2032#if EV_MULTIPLICITY
1027struct ev_loop * 2033struct ev_loop *
1028ev_loop_new (unsigned int flags)
1029{
1030 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1031
1032 memset (loop, 0, sizeof (struct ev_loop));
1033
1034 loop_init (EV_A_ flags);
1035
1036 if (ev_backend (EV_A))
1037 return loop;
1038
1039 return 0;
1040}
1041
1042void
1043ev_loop_destroy (EV_P)
1044{
1045 loop_destroy (EV_A);
1046 ev_free (loop);
1047}
1048
1049void
1050ev_loop_fork (EV_P)
1051{
1052 postfork = 1;
1053}
1054
1055#endif
1056
1057#if EV_MULTIPLICITY
1058struct ev_loop *
1059ev_default_loop_init (unsigned int flags)
1060#else 2034#else
1061int 2035int
2036#endif
1062ev_default_loop (unsigned int flags) 2037ev_default_loop (unsigned int flags)
1063#endif
1064{ 2038{
1065 if (sigpipe [0] == sigpipe [1])
1066 if (pipe (sigpipe))
1067 return 0;
1068
1069 if (!ev_default_loop_ptr) 2039 if (!ev_default_loop_ptr)
1070 { 2040 {
1071#if EV_MULTIPLICITY 2041#if EV_MULTIPLICITY
1072 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2042 EV_P = ev_default_loop_ptr = &default_loop_struct;
1073#else 2043#else
1074 ev_default_loop_ptr = 1; 2044 ev_default_loop_ptr = 1;
1075#endif 2045#endif
1076 2046
1077 loop_init (EV_A_ flags); 2047 loop_init (EV_A_ flags);
1078 2048
1079 if (ev_backend (EV_A)) 2049 if (ev_backend (EV_A))
1080 { 2050 {
1081 siginit (EV_A); 2051#if EV_CHILD_ENABLE
1082
1083#ifndef _WIN32
1084 ev_signal_init (&childev, childcb, SIGCHLD); 2052 ev_signal_init (&childev, childcb, SIGCHLD);
1085 ev_set_priority (&childev, EV_MAXPRI); 2053 ev_set_priority (&childev, EV_MAXPRI);
1086 ev_signal_start (EV_A_ &childev); 2054 ev_signal_start (EV_A_ &childev);
1087 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2055 ev_unref (EV_A); /* child watcher should not keep loop alive */
1088#endif 2056#endif
… …
1093 2061
1094 return ev_default_loop_ptr; 2062 return ev_default_loop_ptr;
1095} 2063}
1096 2064
1097void 2065void
1098ev_default_destroy (void) 2066ev_loop_fork (EV_P)
1099{ 2067{
1100#if EV_MULTIPLICITY 2068 postfork = 1; /* must be in line with ev_default_fork */
1101 struct ev_loop *loop = ev_default_loop_ptr;
1102#endif
1103
1104#ifndef _WIN32
1105 ev_ref (EV_A); /* child watcher */
1106 ev_signal_stop (EV_A_ &childev);
1107#endif
1108
1109 ev_ref (EV_A); /* signal watcher */
1110 ev_io_stop (EV_A_ &sigev);
1111
1112 close (sigpipe [0]); sigpipe [0] = 0;
1113 close (sigpipe [1]); sigpipe [1] = 0;
1114
1115 loop_destroy (EV_A);
1116}
1117
1118void
1119ev_default_fork (void)
1120{
1121#if EV_MULTIPLICITY
1122 struct ev_loop *loop = ev_default_loop_ptr;
1123#endif
1124
1125 if (backend)
1126 postfork = 1;
1127} 2069}
1128 2070
1129/*****************************************************************************/ 2071/*****************************************************************************/
1130 2072
1131int inline_size 2073void
1132any_pending (EV_P) 2074ev_invoke (EV_P_ void *w, int revents)
2075{
2076 EV_CB_INVOKE ((W)w, revents);
2077}
2078
2079unsigned int
2080ev_pending_count (EV_P)
1133{ 2081{
1134 int pri; 2082 int pri;
2083 unsigned int count = 0;
1135 2084
1136 for (pri = NUMPRI; pri--; ) 2085 for (pri = NUMPRI; pri--; )
1137 if (pendingcnt [pri]) 2086 count += pendingcnt [pri];
1138 return 1;
1139 2087
1140 return 0; 2088 return count;
1141} 2089}
1142 2090
1143void inline_speed 2091void noinline
1144call_pending (EV_P) 2092ev_invoke_pending (EV_P)
1145{ 2093{
1146 int pri; 2094 int pri;
1147 2095
1148 for (pri = NUMPRI; pri--; ) 2096 for (pri = NUMPRI; pri--; )
1149 while (pendingcnt [pri]) 2097 while (pendingcnt [pri])
1150 { 2098 {
1151 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2099 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1152 2100
1153 if (expect_true (p->w))
1154 {
1155 /*assert (("non-pending watcher on pending list", p->w->pending));*/ 2101 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2102 /* ^ this is no longer true, as pending_w could be here */
1156 2103
1157 p->w->pending = 0; 2104 p->w->pending = 0;
1158 EV_CB_INVOKE (p->w, p->events); 2105 EV_CB_INVOKE (p->w, p->events);
1159 } 2106 EV_FREQUENT_CHECK;
1160 } 2107 }
1161} 2108}
1162 2109
1163void inline_size 2110#if EV_IDLE_ENABLE
2111/* make idle watchers pending. this handles the "call-idle */
2112/* only when higher priorities are idle" logic */
2113inline_size void
2114idle_reify (EV_P)
2115{
2116 if (expect_false (idleall))
2117 {
2118 int pri;
2119
2120 for (pri = NUMPRI; pri--; )
2121 {
2122 if (pendingcnt [pri])
2123 break;
2124
2125 if (idlecnt [pri])
2126 {
2127 queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
2128 break;
2129 }
2130 }
2131 }
2132}
2133#endif
2134
2135/* make timers pending */
2136inline_size void
1164timers_reify (EV_P) 2137timers_reify (EV_P)
1165{ 2138{
2139 EV_FREQUENT_CHECK;
2140
1166 while (timercnt && ((WT)timers [0])->at <= mn_now) 2141 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1167 { 2142 {
1168 ev_timer *w = timers [0]; 2143 do
1169
1170 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1171
1172 /* first reschedule or stop timer */
1173 if (w->repeat)
1174 { 2144 {
2145 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
2146
2147 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
2148
2149 /* first reschedule or stop timer */
2150 if (w->repeat)
2151 {
2152 ev_at (w) += w->repeat;
2153 if (ev_at (w) < mn_now)
2154 ev_at (w) = mn_now;
2155
1175 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 2156 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1176 2157
1177 ((WT)w)->at += w->repeat; 2158 ANHE_at_cache (timers [HEAP0]);
1178 if (((WT)w)->at < mn_now)
1179 ((WT)w)->at = mn_now;
1180
1181 downheap ((WT *)timers, timercnt, 0); 2159 downheap (timers, timercnt, HEAP0);
2160 }
2161 else
2162 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
2163
2164 EV_FREQUENT_CHECK;
2165 feed_reverse (EV_A_ (W)w);
1182 } 2166 }
1183 else 2167 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1184 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1185 2168
1186 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 2169 feed_reverse_done (EV_A_ EV_TIMER);
1187 } 2170 }
1188} 2171}
1189 2172
1190#if EV_PERIODIC_ENABLE 2173#if EV_PERIODIC_ENABLE
1191void inline_size 2174/* make periodics pending */
2175inline_size void
1192periodics_reify (EV_P) 2176periodics_reify (EV_P)
1193{ 2177{
2178 EV_FREQUENT_CHECK;
2179
1194 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now) 2180 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1195 { 2181 {
1196 ev_periodic *w = periodics [0]; 2182 int feed_count = 0;
1197 2183
1198 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ 2184 do
1199
1200 /* first reschedule or stop timer */
1201 if (w->reschedule_cb)
1202 { 2185 {
2186 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2187
2188 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
2189
2190 /* first reschedule or stop timer */
2191 if (w->reschedule_cb)
2192 {
1203 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001); 2193 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2194
1204 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now)); 2195 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
2196
2197 ANHE_at_cache (periodics [HEAP0]);
1205 downheap ((WT *)periodics, periodiccnt, 0); 2198 downheap (periodics, periodiccnt, HEAP0);
2199 }
2200 else if (w->interval)
2201 {
2202 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2203 /* if next trigger time is not sufficiently in the future, put it there */
2204 /* this might happen because of floating point inexactness */
2205 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2206 {
2207 ev_at (w) += w->interval;
2208
2209 /* if interval is unreasonably low we might still have a time in the past */
2210 /* so correct this. this will make the periodic very inexact, but the user */
2211 /* has effectively asked to get triggered more often than possible */
2212 if (ev_at (w) < ev_rt_now)
2213 ev_at (w) = ev_rt_now;
2214 }
2215
2216 ANHE_at_cache (periodics [HEAP0]);
2217 downheap (periodics, periodiccnt, HEAP0);
2218 }
2219 else
2220 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
2221
2222 EV_FREQUENT_CHECK;
2223 feed_reverse (EV_A_ (W)w);
1206 } 2224 }
1207 else if (w->interval) 2225 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1208 {
1209 ((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
1210 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1211 downheap ((WT *)periodics, periodiccnt, 0);
1212 }
1213 else
1214 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1215 2226
1216 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 2227 feed_reverse_done (EV_A_ EV_PERIODIC);
1217 } 2228 }
1218} 2229}
1219 2230
2231/* simply recalculate all periodics */
2232/* TODO: maybe ensure that at least one event happens when jumping forward? */
1220static void noinline 2233static void noinline
1221periodics_reschedule (EV_P) 2234periodics_reschedule (EV_P)
1222{ 2235{
1223 int i; 2236 int i;
1224 2237
1225 /* adjust periodics after time jump */ 2238 /* adjust periodics after time jump */
1226 for (i = 0; i < periodiccnt; ++i) 2239 for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
1227 { 2240 {
1228 ev_periodic *w = periodics [i]; 2241 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1229 2242
1230 if (w->reschedule_cb) 2243 if (w->reschedule_cb)
1231 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 2244 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1232 else if (w->interval) 2245 else if (w->interval)
1233 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; 2246 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2247
2248 ANHE_at_cache (periodics [i]);
2249 }
2250
2251 reheap (periodics, periodiccnt);
2252}
2253#endif
2254
2255/* adjust all timers by a given offset */
2256static void noinline
2257timers_reschedule (EV_P_ ev_tstamp adjust)
2258{
2259 int i;
2260
2261 for (i = 0; i < timercnt; ++i)
1234 } 2262 {
1235 2263 ANHE *he = timers + i + HEAP0;
1236 /* now rebuild the heap */ 2264 ANHE_w (*he)->at += adjust;
1237 for (i = periodiccnt >> 1; i--; ) 2265 ANHE_at_cache (*he);
1238 downheap ((WT *)periodics, periodiccnt, i); 2266 }
1239} 2267}
1240#endif
1241 2268
1242int inline_size 2269/* fetch new monotonic and realtime times from the kernel */
1243time_update_monotonic (EV_P) 2270/* also detect if there was a timejump, and act accordingly */
2271inline_speed void
2272time_update (EV_P_ ev_tstamp max_block)
1244{ 2273{
2274#if EV_USE_MONOTONIC
2275 if (expect_true (have_monotonic))
2276 {
2277 int i;
2278 ev_tstamp odiff = rtmn_diff;
2279
1245 mn_now = get_clock (); 2280 mn_now = get_clock ();
1246 2281
2282 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
2283 /* interpolate in the meantime */
1247 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 2284 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1248 { 2285 {
1249 ev_rt_now = rtmn_diff + mn_now; 2286 ev_rt_now = rtmn_diff + mn_now;
1250 return 0; 2287 return;
1251 } 2288 }
1252 else 2289
1253 {
1254 now_floor = mn_now; 2290 now_floor = mn_now;
1255 ev_rt_now = ev_time (); 2291 ev_rt_now = ev_time ();
1256 return 1;
1257 }
1258}
1259 2292
1260void inline_size 2293 /* loop a few times, before making important decisions.
1261time_update (EV_P) 2294 * on the choice of "4": one iteration isn't enough,
1262{ 2295 * in case we get preempted during the calls to
1263 int i; 2296 * ev_time and get_clock. a second call is almost guaranteed
1264 2297 * to succeed in that case, though. and looping a few more times
1265#if EV_USE_MONOTONIC 2298 * doesn't hurt either as we only do this on time-jumps or
1266 if (expect_true (have_monotonic)) 2299 * in the unlikely event of having been preempted here.
1267 { 2300 */
1268 if (time_update_monotonic (EV_A)) 2301 for (i = 4; --i; )
1269 { 2302 {
1270 ev_tstamp odiff = rtmn_diff;
1271
1272 /* loop a few times, before making important decisions.
1273 * on the choice of "4": one iteration isn't enough,
1274 * in case we get preempted during the calls to
1275 * ev_time and get_clock. a second call is almost guarenteed
1276 * to succeed in that case, though. and looping a few more times
1277 * doesn't hurt either as we only do this on time-jumps or
1278 * in the unlikely event of getting preempted here.
1279 */
1280 for (i = 4; --i; )
1281 {
1282 rtmn_diff = ev_rt_now - mn_now; 2303 rtmn_diff = ev_rt_now - mn_now;
1283 2304
1284 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 2305 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP))
1285 return; /* all is well */ 2306 return; /* all is well */
1286 2307
1287 ev_rt_now = ev_time (); 2308 ev_rt_now = ev_time ();
1288 mn_now = get_clock (); 2309 mn_now = get_clock ();
1289 now_floor = mn_now; 2310 now_floor = mn_now;
1290 } 2311 }
1291 2312
2313 /* no timer adjustment, as the monotonic clock doesn't jump */
2314 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1292# if EV_PERIODIC_ENABLE 2315# if EV_PERIODIC_ENABLE
1293 periodics_reschedule (EV_A); 2316 periodics_reschedule (EV_A);
1294# endif 2317# endif
1295 /* no timer adjustment, as the monotonic clock doesn't jump */
1296 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1297 }
1298 } 2318 }
1299 else 2319 else
1300#endif 2320#endif
1301 { 2321 {
1302 ev_rt_now = ev_time (); 2322 ev_rt_now = ev_time ();
1303 2323
1304 if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) 2324 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1305 { 2325 {
2326 /* adjust timers. this is easy, as the offset is the same for all of them */
2327 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1306#if EV_PERIODIC_ENABLE 2328#if EV_PERIODIC_ENABLE
1307 periodics_reschedule (EV_A); 2329 periodics_reschedule (EV_A);
1308#endif 2330#endif
1309
1310 /* adjust timers. this is easy, as the offset is the same for all */
1311 for (i = 0; i < timercnt; ++i)
1312 ((WT)timers [i])->at += ev_rt_now - mn_now;
1313 } 2331 }
1314 2332
1315 mn_now = ev_rt_now; 2333 mn_now = ev_rt_now;
1316 } 2334 }
1317} 2335}
1318 2336
1319void 2337void
1320ev_ref (EV_P)
1321{
1322 ++activecnt;
1323}
1324
1325void
1326ev_unref (EV_P)
1327{
1328 --activecnt;
1329}
1330
1331static int loop_done;
1332
1333void
1334ev_loop (EV_P_ int flags) 2338ev_run (EV_P_ int flags)
1335{ 2339{
1336 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) 2340#if EV_FEATURE_API
1337 ? EVUNLOOP_ONE 2341 ++loop_depth;
1338 : EVUNLOOP_CANCEL; 2342#endif
1339 2343
1340 while (activecnt) 2344 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2345
2346 loop_done = EVBREAK_CANCEL;
2347
2348 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2349
2350 do
1341 { 2351 {
1342 /* we might have forked, so reify kernel state if necessary */ 2352#if EV_VERIFY >= 2
2353 ev_verify (EV_A);
2354#endif
2355
2356#ifndef _WIN32
2357 if (expect_false (curpid)) /* penalise the forking check even more */
2358 if (expect_false (getpid () != curpid))
2359 {
2360 curpid = getpid ();
2361 postfork = 1;
2362 }
2363#endif
2364
1343 #if EV_FORK_ENABLE 2365#if EV_FORK_ENABLE
2366 /* we might have forked, so queue fork handlers */
1344 if (expect_false (postfork)) 2367 if (expect_false (postfork))
1345 if (forkcnt) 2368 if (forkcnt)
1346 { 2369 {
1347 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2370 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1348 call_pending (EV_A); 2371 EV_INVOKE_PENDING;
1349 } 2372 }
1350 #endif 2373#endif
1351 2374
2375#if EV_PREPARE_ENABLE
1352 /* queue check watchers (and execute them) */ 2376 /* queue prepare watchers (and execute them) */
1353 if (expect_false (preparecnt)) 2377 if (expect_false (preparecnt))
1354 { 2378 {
1355 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2379 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1356 call_pending (EV_A); 2380 EV_INVOKE_PENDING;
1357 } 2381 }
2382#endif
2383
2384 if (expect_false (loop_done))
2385 break;
1358 2386
1359 /* we might have forked, so reify kernel state if necessary */ 2387 /* we might have forked, so reify kernel state if necessary */
1360 if (expect_false (postfork)) 2388 if (expect_false (postfork))
1361 loop_fork (EV_A); 2389 loop_fork (EV_A);
1362 2390
1363 /* update fd-related kernel structures */ 2391 /* update fd-related kernel structures */
1364 fd_reify (EV_A); 2392 fd_reify (EV_A);
1365 2393
1366 /* calculate blocking time */ 2394 /* calculate blocking time */
1367 { 2395 {
1368 double block; 2396 ev_tstamp waittime = 0.;
2397 ev_tstamp sleeptime = 0.;
1369 2398
1370 if (flags & EVLOOP_NONBLOCK || idlecnt) 2399 /* remember old timestamp for io_blocktime calculation */
1371 block = 0.; /* do not block at all */ 2400 ev_tstamp prev_mn_now = mn_now;
1372 else 2401
2402 /* update time to cancel out callback processing overhead */
2403 time_update (EV_A_ 1e100);
2404
2405 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt)))
1373 { 2406 {
1374 /* update time to cancel out callback processing overhead */
1375#if EV_USE_MONOTONIC
1376 if (expect_true (have_monotonic))
1377 time_update_monotonic (EV_A);
1378 else
1379#endif
1380 {
1381 ev_rt_now = ev_time ();
1382 mn_now = ev_rt_now;
1383 }
1384
1385 block = MAX_BLOCKTIME; 2407 waittime = MAX_BLOCKTIME;
1386 2408
1387 if (timercnt) 2409 if (timercnt)
1388 { 2410 {
1389 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge; 2411 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
1390 if (block > to) block = to; 2412 if (waittime > to) waittime = to;
1391 } 2413 }
1392 2414
1393#if EV_PERIODIC_ENABLE 2415#if EV_PERIODIC_ENABLE
1394 if (periodiccnt) 2416 if (periodiccnt)
1395 { 2417 {
1396 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge; 2418 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1397 if (block > to) block = to; 2419 if (waittime > to) waittime = to;
1398 } 2420 }
1399#endif 2421#endif
1400 2422
2423 /* don't let timeouts decrease the waittime below timeout_blocktime */
2424 if (expect_false (waittime < timeout_blocktime))
2425 waittime = timeout_blocktime;
2426
2427 /* extra check because io_blocktime is commonly 0 */
1401 if (expect_false (block < 0.)) block = 0.; 2428 if (expect_false (io_blocktime))
2429 {
2430 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2431
2432 if (sleeptime > waittime - backend_fudge)
2433 sleeptime = waittime - backend_fudge;
2434
2435 if (expect_true (sleeptime > 0.))
2436 {
2437 ev_sleep (sleeptime);
2438 waittime -= sleeptime;
2439 }
2440 }
1402 } 2441 }
1403 2442
2443#if EV_FEATURE_API
2444 ++loop_count;
2445#endif
2446 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
1404 backend_poll (EV_A_ block); 2447 backend_poll (EV_A_ waittime);
2448 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2449
2450 /* update ev_rt_now, do magic */
2451 time_update (EV_A_ waittime + sleeptime);
1405 } 2452 }
1406
1407 /* update ev_rt_now, do magic */
1408 time_update (EV_A);
1409 2453
1410 /* queue pending timers and reschedule them */ 2454 /* queue pending timers and reschedule them */
1411 timers_reify (EV_A); /* relative timers called last */ 2455 timers_reify (EV_A); /* relative timers called last */
1412#if EV_PERIODIC_ENABLE 2456#if EV_PERIODIC_ENABLE
1413 periodics_reify (EV_A); /* absolute timers called first */ 2457 periodics_reify (EV_A); /* absolute timers called first */
1414#endif 2458#endif
1415 2459
2460#if EV_IDLE_ENABLE
1416 /* queue idle watchers unless other events are pending */ 2461 /* queue idle watchers unless other events are pending */
1417 if (idlecnt && !any_pending (EV_A)) 2462 idle_reify (EV_A);
1418 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 2463#endif
1419 2464
2465#if EV_CHECK_ENABLE
1420 /* queue check watchers, to be executed first */ 2466 /* queue check watchers, to be executed first */
1421 if (expect_false (checkcnt)) 2467 if (expect_false (checkcnt))
1422 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2468 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2469#endif
1423 2470
1424 call_pending (EV_A); 2471 EV_INVOKE_PENDING;
1425
1426 if (expect_false (loop_done))
1427 break;
1428 } 2472 }
2473 while (expect_true (
2474 activecnt
2475 && !loop_done
2476 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2477 ));
1429 2478
1430 if (loop_done == EVUNLOOP_ONE) 2479 if (loop_done == EVBREAK_ONE)
1431 loop_done = EVUNLOOP_CANCEL; 2480 loop_done = EVBREAK_CANCEL;
1432}
1433 2481
2482#if EV_FEATURE_API
2483 --loop_depth;
2484#endif
2485}
2486
1434void 2487void
1435ev_unloop (EV_P_ int how) 2488ev_break (EV_P_ int how)
1436{ 2489{
1437 loop_done = how; 2490 loop_done = how;
1438} 2491}
1439 2492
2493void
2494ev_ref (EV_P)
2495{
2496 ++activecnt;
2497}
2498
2499void
2500ev_unref (EV_P)
2501{
2502 --activecnt;
2503}
2504
2505void
2506ev_now_update (EV_P)
2507{
2508 time_update (EV_A_ 1e100);
2509}
2510
2511void
2512ev_suspend (EV_P)
2513{
2514 ev_now_update (EV_A);
2515}
2516
2517void
2518ev_resume (EV_P)
2519{
2520 ev_tstamp mn_prev = mn_now;
2521
2522 ev_now_update (EV_A);
2523 timers_reschedule (EV_A_ mn_now - mn_prev);
2524#if EV_PERIODIC_ENABLE
2525 /* TODO: really do this? */
2526 periodics_reschedule (EV_A);
2527#endif
2528}
2529
1440/*****************************************************************************/ 2530/*****************************************************************************/
2531/* singly-linked list management, used when the expected list length is short */
1441 2532
1442void inline_size 2533inline_size void
1443wlist_add (WL *head, WL elem) 2534wlist_add (WL *head, WL elem)
1444{ 2535{
1445 elem->next = *head; 2536 elem->next = *head;
1446 *head = elem; 2537 *head = elem;
1447} 2538}
1448 2539
1449void inline_size 2540inline_size void
1450wlist_del (WL *head, WL elem) 2541wlist_del (WL *head, WL elem)
1451{ 2542{
1452 while (*head) 2543 while (*head)
1453 { 2544 {
1454 if (*head == elem) 2545 if (expect_true (*head == elem))
1455 { 2546 {
1456 *head = elem->next; 2547 *head = elem->next;
1457 return; 2548 break;
1458 } 2549 }
1459 2550
1460 head = &(*head)->next; 2551 head = &(*head)->next;
1461 } 2552 }
1462} 2553}
1463 2554
1464void inline_speed 2555/* internal, faster, version of ev_clear_pending */
2556inline_speed void
1465ev_clear_pending (EV_P_ W w) 2557clear_pending (EV_P_ W w)
1466{ 2558{
1467 if (w->pending) 2559 if (w->pending)
1468 { 2560 {
1469 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2561 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
1470 w->pending = 0; 2562 w->pending = 0;
1471 } 2563 }
1472} 2564}
1473 2565
1474void inline_speed 2566int
2567ev_clear_pending (EV_P_ void *w)
2568{
2569 W w_ = (W)w;
2570 int pending = w_->pending;
2571
2572 if (expect_true (pending))
2573 {
2574 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2575 p->w = (W)&pending_w;
2576 w_->pending = 0;
2577 return p->events;
2578 }
2579 else
2580 return 0;
2581}
2582
2583inline_size void
2584pri_adjust (EV_P_ W w)
2585{
2586 int pri = ev_priority (w);
2587 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2588 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2589 ev_set_priority (w, pri);
2590}
2591
2592inline_speed void
1475ev_start (EV_P_ W w, int active) 2593ev_start (EV_P_ W w, int active)
1476{ 2594{
1477 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 2595 pri_adjust (EV_A_ w);
1478 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1479
1480 w->active = active; 2596 w->active = active;
1481 ev_ref (EV_A); 2597 ev_ref (EV_A);
1482} 2598}
1483 2599
1484void inline_size 2600inline_size void
1485ev_stop (EV_P_ W w) 2601ev_stop (EV_P_ W w)
1486{ 2602{
1487 ev_unref (EV_A); 2603 ev_unref (EV_A);
1488 w->active = 0; 2604 w->active = 0;
1489} 2605}
1490 2606
1491/*****************************************************************************/ 2607/*****************************************************************************/
1492 2608
1493void 2609void noinline
1494ev_io_start (EV_P_ ev_io *w) 2610ev_io_start (EV_P_ ev_io *w)
1495{ 2611{
1496 int fd = w->fd; 2612 int fd = w->fd;
1497 2613
1498 if (expect_false (ev_is_active (w))) 2614 if (expect_false (ev_is_active (w)))
1499 return; 2615 return;
1500 2616
1501 assert (("ev_io_start called with negative fd", fd >= 0)); 2617 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2618 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2619
2620 EV_FREQUENT_CHECK;
1502 2621
1503 ev_start (EV_A_ (W)w, 1); 2622 ev_start (EV_A_ (W)w, 1);
1504 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2623 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
1505 wlist_add ((WL *)&anfds[fd].head, (WL)w); 2624 wlist_add (&anfds[fd].head, (WL)w);
1506 2625
1507 fd_change (EV_A_ fd); 2626 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
1508} 2627 w->events &= ~EV__IOFDSET;
1509 2628
1510void 2629 EV_FREQUENT_CHECK;
2630}
2631
2632void noinline
1511ev_io_stop (EV_P_ ev_io *w) 2633ev_io_stop (EV_P_ ev_io *w)
1512{ 2634{
1513 ev_clear_pending (EV_A_ (W)w); 2635 clear_pending (EV_A_ (W)w);
1514 if (expect_false (!ev_is_active (w))) 2636 if (expect_false (!ev_is_active (w)))
1515 return; 2637 return;
1516 2638
1517 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 2639 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1518 2640
2641 EV_FREQUENT_CHECK;
2642
1519 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 2643 wlist_del (&anfds[w->fd].head, (WL)w);
1520 ev_stop (EV_A_ (W)w); 2644 ev_stop (EV_A_ (W)w);
1521 2645
1522 fd_change (EV_A_ w->fd); 2646 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
1523}
1524 2647
1525void 2648 EV_FREQUENT_CHECK;
2649}
2650
2651void noinline
1526ev_timer_start (EV_P_ ev_timer *w) 2652ev_timer_start (EV_P_ ev_timer *w)
1527{ 2653{
1528 if (expect_false (ev_is_active (w))) 2654 if (expect_false (ev_is_active (w)))
1529 return; 2655 return;
1530 2656
1531 ((WT)w)->at += mn_now; 2657 ev_at (w) += mn_now;
1532 2658
1533 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2659 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1534 2660
2661 EV_FREQUENT_CHECK;
2662
2663 ++timercnt;
1535 ev_start (EV_A_ (W)w, ++timercnt); 2664 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
1536 array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2); 2665 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1537 timers [timercnt - 1] = w; 2666 ANHE_w (timers [ev_active (w)]) = (WT)w;
1538 upheap ((WT *)timers, timercnt - 1); 2667 ANHE_at_cache (timers [ev_active (w)]);
2668 upheap (timers, ev_active (w));
1539 2669
2670 EV_FREQUENT_CHECK;
2671
1540 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/ 2672 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
1541} 2673}
1542 2674
1543void 2675void noinline
1544ev_timer_stop (EV_P_ ev_timer *w) 2676ev_timer_stop (EV_P_ ev_timer *w)
1545{ 2677{
1546 ev_clear_pending (EV_A_ (W)w); 2678 clear_pending (EV_A_ (W)w);
1547 if (expect_false (!ev_is_active (w))) 2679 if (expect_false (!ev_is_active (w)))
1548 return; 2680 return;
1549 2681
1550 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 2682 EV_FREQUENT_CHECK;
1551 2683
1552 { 2684 {
1553 int active = ((W)w)->active; 2685 int active = ev_active (w);
1554 2686
2687 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2688
2689 --timercnt;
2690
1555 if (expect_true (--active < --timercnt)) 2691 if (expect_true (active < timercnt + HEAP0))
1556 { 2692 {
1557 timers [active] = timers [timercnt]; 2693 timers [active] = timers [timercnt + HEAP0];
1558 adjustheap ((WT *)timers, timercnt, active); 2694 adjustheap (timers, timercnt, active);
1559 } 2695 }
1560 } 2696 }
1561 2697
1562 ((WT)w)->at -= mn_now; 2698 ev_at (w) -= mn_now;
1563 2699
1564 ev_stop (EV_A_ (W)w); 2700 ev_stop (EV_A_ (W)w);
1565}
1566 2701
1567void 2702 EV_FREQUENT_CHECK;
2703}
2704
2705void noinline
1568ev_timer_again (EV_P_ ev_timer *w) 2706ev_timer_again (EV_P_ ev_timer *w)
1569{ 2707{
2708 EV_FREQUENT_CHECK;
2709
1570 if (ev_is_active (w)) 2710 if (ev_is_active (w))
1571 { 2711 {
1572 if (w->repeat) 2712 if (w->repeat)
1573 { 2713 {
1574 ((WT)w)->at = mn_now + w->repeat; 2714 ev_at (w) = mn_now + w->repeat;
2715 ANHE_at_cache (timers [ev_active (w)]);
1575 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); 2716 adjustheap (timers, timercnt, ev_active (w));
1576 } 2717 }
1577 else 2718 else
1578 ev_timer_stop (EV_A_ w); 2719 ev_timer_stop (EV_A_ w);
1579 } 2720 }
1580 else if (w->repeat) 2721 else if (w->repeat)
1581 { 2722 {
1582 w->at = w->repeat; 2723 ev_at (w) = w->repeat;
1583 ev_timer_start (EV_A_ w); 2724 ev_timer_start (EV_A_ w);
1584 } 2725 }
2726
2727 EV_FREQUENT_CHECK;
2728}
2729
2730ev_tstamp
2731ev_timer_remaining (EV_P_ ev_timer *w)
2732{
2733 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
1585} 2734}
1586 2735
1587#if EV_PERIODIC_ENABLE 2736#if EV_PERIODIC_ENABLE
1588void 2737void noinline
1589ev_periodic_start (EV_P_ ev_periodic *w) 2738ev_periodic_start (EV_P_ ev_periodic *w)
1590{ 2739{
1591 if (expect_false (ev_is_active (w))) 2740 if (expect_false (ev_is_active (w)))
1592 return; 2741 return;
1593 2742
1594 if (w->reschedule_cb) 2743 if (w->reschedule_cb)
1595 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 2744 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1596 else if (w->interval) 2745 else if (w->interval)
1597 { 2746 {
1598 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2747 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
1599 /* this formula differs from the one in periodic_reify because we do not always round up */ 2748 /* this formula differs from the one in periodic_reify because we do not always round up */
1600 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; 2749 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1601 } 2750 }
2751 else
2752 ev_at (w) = w->offset;
1602 2753
2754 EV_FREQUENT_CHECK;
2755
2756 ++periodiccnt;
1603 ev_start (EV_A_ (W)w, ++periodiccnt); 2757 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
1604 array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2); 2758 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
1605 periodics [periodiccnt - 1] = w; 2759 ANHE_w (periodics [ev_active (w)]) = (WT)w;
1606 upheap ((WT *)periodics, periodiccnt - 1); 2760 ANHE_at_cache (periodics [ev_active (w)]);
2761 upheap (periodics, ev_active (w));
1607 2762
2763 EV_FREQUENT_CHECK;
2764
1608 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/ 2765 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
1609} 2766}
1610 2767
1611void 2768void noinline
1612ev_periodic_stop (EV_P_ ev_periodic *w) 2769ev_periodic_stop (EV_P_ ev_periodic *w)
1613{ 2770{
1614 ev_clear_pending (EV_A_ (W)w); 2771 clear_pending (EV_A_ (W)w);
1615 if (expect_false (!ev_is_active (w))) 2772 if (expect_false (!ev_is_active (w)))
1616 return; 2773 return;
1617 2774
1618 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 2775 EV_FREQUENT_CHECK;
1619 2776
1620 { 2777 {
1621 int active = ((W)w)->active; 2778 int active = ev_active (w);
1622 2779
2780 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2781
2782 --periodiccnt;
2783
1623 if (expect_true (--active < --periodiccnt)) 2784 if (expect_true (active < periodiccnt + HEAP0))
1624 { 2785 {
1625 periodics [active] = periodics [periodiccnt]; 2786 periodics [active] = periodics [periodiccnt + HEAP0];
1626 adjustheap ((WT *)periodics, periodiccnt, active); 2787 adjustheap (periodics, periodiccnt, active);
1627 } 2788 }
1628 } 2789 }
1629 2790
1630 ev_stop (EV_A_ (W)w); 2791 ev_stop (EV_A_ (W)w);
1631}
1632 2792
1633void 2793 EV_FREQUENT_CHECK;
2794}
2795
2796void noinline
1634ev_periodic_again (EV_P_ ev_periodic *w) 2797ev_periodic_again (EV_P_ ev_periodic *w)
1635{ 2798{
1636 /* TODO: use adjustheap and recalculation */ 2799 /* TODO: use adjustheap and recalculation */
1637 ev_periodic_stop (EV_A_ w); 2800 ev_periodic_stop (EV_A_ w);
1638 ev_periodic_start (EV_A_ w); 2801 ev_periodic_start (EV_A_ w);
… …
1641 2804
1642#ifndef SA_RESTART 2805#ifndef SA_RESTART
1643# define SA_RESTART 0 2806# define SA_RESTART 0
1644#endif 2807#endif
1645 2808
1646void 2809#if EV_SIGNAL_ENABLE
2810
2811void noinline
1647ev_signal_start (EV_P_ ev_signal *w) 2812ev_signal_start (EV_P_ ev_signal *w)
1648{ 2813{
1649#if EV_MULTIPLICITY
1650 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1651#endif
1652 if (expect_false (ev_is_active (w))) 2814 if (expect_false (ev_is_active (w)))
1653 return; 2815 return;
1654 2816
1655 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 2817 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2818
2819#if EV_MULTIPLICITY
2820 assert (("libev: a signal must not be attached to two different loops",
2821 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2822
2823 signals [w->signum - 1].loop = EV_A;
2824#endif
2825
2826 EV_FREQUENT_CHECK;
2827
2828#if EV_USE_SIGNALFD
2829 if (sigfd == -2)
2830 {
2831 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2832 if (sigfd < 0 && errno == EINVAL)
2833 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2834
2835 if (sigfd >= 0)
2836 {
2837 fd_intern (sigfd); /* doing it twice will not hurt */
2838
2839 sigemptyset (&sigfd_set);
2840
2841 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
2842 ev_set_priority (&sigfd_w, EV_MAXPRI);
2843 ev_io_start (EV_A_ &sigfd_w);
2844 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
2845 }
2846 }
2847
2848 if (sigfd >= 0)
2849 {
2850 /* TODO: check .head */
2851 sigaddset (&sigfd_set, w->signum);
2852 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
2853
2854 signalfd (sigfd, &sigfd_set, 0);
2855 }
2856#endif
1656 2857
1657 ev_start (EV_A_ (W)w, 1); 2858 ev_start (EV_A_ (W)w, 1);
1658 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1659 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 2859 wlist_add (&signals [w->signum - 1].head, (WL)w);
1660 2860
1661 if (!((WL)w)->next) 2861 if (!((WL)w)->next)
2862# if EV_USE_SIGNALFD
2863 if (sigfd < 0) /*TODO*/
2864# endif
1662 { 2865 {
1663#if _WIN32 2866# ifdef _WIN32
2867 evpipe_init (EV_A);
2868
1664 signal (w->signum, sighandler); 2869 signal (w->signum, ev_sighandler);
1665#else 2870# else
1666 struct sigaction sa; 2871 struct sigaction sa;
2872
2873 evpipe_init (EV_A);
2874
1667 sa.sa_handler = sighandler; 2875 sa.sa_handler = ev_sighandler;
1668 sigfillset (&sa.sa_mask); 2876 sigfillset (&sa.sa_mask);
1669 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2877 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1670 sigaction (w->signum, &sa, 0); 2878 sigaction (w->signum, &sa, 0);
2879
2880 sigemptyset (&sa.sa_mask);
2881 sigaddset (&sa.sa_mask, w->signum);
2882 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
1671#endif 2883#endif
1672 } 2884 }
1673}
1674 2885
1675void 2886 EV_FREQUENT_CHECK;
2887}
2888
2889void noinline
1676ev_signal_stop (EV_P_ ev_signal *w) 2890ev_signal_stop (EV_P_ ev_signal *w)
1677{ 2891{
1678 ev_clear_pending (EV_A_ (W)w); 2892 clear_pending (EV_A_ (W)w);
1679 if (expect_false (!ev_is_active (w))) 2893 if (expect_false (!ev_is_active (w)))
1680 return; 2894 return;
1681 2895
2896 EV_FREQUENT_CHECK;
2897
1682 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 2898 wlist_del (&signals [w->signum - 1].head, (WL)w);
1683 ev_stop (EV_A_ (W)w); 2899 ev_stop (EV_A_ (W)w);
1684 2900
1685 if (!signals [w->signum - 1].head) 2901 if (!signals [w->signum - 1].head)
2902 {
2903#if EV_MULTIPLICITY
2904 signals [w->signum - 1].loop = 0; /* unattach from signal */
2905#endif
2906#if EV_USE_SIGNALFD
2907 if (sigfd >= 0)
2908 {
2909 sigset_t ss;
2910
2911 sigemptyset (&ss);
2912 sigaddset (&ss, w->signum);
2913 sigdelset (&sigfd_set, w->signum);
2914
2915 signalfd (sigfd, &sigfd_set, 0);
2916 sigprocmask (SIG_UNBLOCK, &ss, 0);
2917 }
2918 else
2919#endif
1686 signal (w->signum, SIG_DFL); 2920 signal (w->signum, SIG_DFL);
2921 }
2922
2923 EV_FREQUENT_CHECK;
1687} 2924}
2925
2926#endif
2927
2928#if EV_CHILD_ENABLE
1688 2929
1689void 2930void
1690ev_child_start (EV_P_ ev_child *w) 2931ev_child_start (EV_P_ ev_child *w)
1691{ 2932{
1692#if EV_MULTIPLICITY 2933#if EV_MULTIPLICITY
1693 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2934 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1694#endif 2935#endif
1695 if (expect_false (ev_is_active (w))) 2936 if (expect_false (ev_is_active (w)))
1696 return; 2937 return;
1697 2938
2939 EV_FREQUENT_CHECK;
2940
1698 ev_start (EV_A_ (W)w, 1); 2941 ev_start (EV_A_ (W)w, 1);
1699 wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2942 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2943
2944 EV_FREQUENT_CHECK;
1700} 2945}
1701 2946
1702void 2947void
1703ev_child_stop (EV_P_ ev_child *w) 2948ev_child_stop (EV_P_ ev_child *w)
1704{ 2949{
1705 ev_clear_pending (EV_A_ (W)w); 2950 clear_pending (EV_A_ (W)w);
1706 if (expect_false (!ev_is_active (w))) 2951 if (expect_false (!ev_is_active (w)))
1707 return; 2952 return;
1708 2953
2954 EV_FREQUENT_CHECK;
2955
1709 wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2956 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
1710 ev_stop (EV_A_ (W)w); 2957 ev_stop (EV_A_ (W)w);
2958
2959 EV_FREQUENT_CHECK;
1711} 2960}
2961
2962#endif
1712 2963
1713#if EV_STAT_ENABLE 2964#if EV_STAT_ENABLE
1714 2965
1715# ifdef _WIN32 2966# ifdef _WIN32
1716# undef lstat 2967# undef lstat
1717# define lstat(a,b) _stati64 (a,b) 2968# define lstat(a,b) _stati64 (a,b)
1718# endif 2969# endif
1719 2970
1720#define DEF_STAT_INTERVAL 5.0074891 2971#define DEF_STAT_INTERVAL 5.0074891
2972#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
1721#define MIN_STAT_INTERVAL 0.1074891 2973#define MIN_STAT_INTERVAL 0.1074891
1722 2974
1723void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 2975static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1724 2976
1725#if EV_USE_INOTIFY 2977#if EV_USE_INOTIFY
1726# define EV_INOTIFY_BUFSIZE 8192 2978
2979/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
2980# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
1727 2981
1728static void noinline 2982static void noinline
1729infy_add (EV_P_ ev_stat *w) 2983infy_add (EV_P_ ev_stat *w)
1730{ 2984{
1731 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); 2985 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);
1732 2986
1733 if (w->wd < 0) 2987 if (w->wd >= 0)
2988 {
2989 struct statfs sfs;
2990
2991 /* now local changes will be tracked by inotify, but remote changes won't */
2992 /* unless the filesystem is known to be local, we therefore still poll */
2993 /* also do poll on <2.6.25, but with normal frequency */
2994
2995 if (!fs_2625)
2996 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2997 else if (!statfs (w->path, &sfs)
2998 && (sfs.f_type == 0x1373 /* devfs */
2999 || sfs.f_type == 0xEF53 /* ext2/3 */
3000 || sfs.f_type == 0x3153464a /* jfs */
3001 || sfs.f_type == 0x52654973 /* reiser3 */
3002 || sfs.f_type == 0x01021994 /* tempfs */
3003 || sfs.f_type == 0x58465342 /* xfs */))
3004 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3005 else
3006 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
1734 { 3007 }
1735 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 3008 else
3009 {
3010 /* can't use inotify, continue to stat */
3011 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
1736 3012
1737 /* monitor some parent directory for speedup hints */ 3013 /* if path is not there, monitor some parent directory for speedup hints */
3014 /* note that exceeding the hardcoded path limit is not a correctness issue, */
3015 /* but an efficiency issue only */
1738 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3016 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
1739 { 3017 {
1740 char path [4096]; 3018 char path [4096];
1741 strcpy (path, w->path); 3019 strcpy (path, w->path);
1742 3020
… …
1745 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 3023 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
1746 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 3024 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
1747 3025
1748 char *pend = strrchr (path, '/'); 3026 char *pend = strrchr (path, '/');
1749 3027
1750 if (!pend) 3028 if (!pend || pend == path)
1751 break; /* whoops, no '/', complain to your admin */ 3029 break;
1752 3030
1753 *pend = 0; 3031 *pend = 0;
1754 w->wd = inotify_add_watch (fs_fd, path, mask); 3032 w->wd = inotify_add_watch (fs_fd, path, mask);
1755 } 3033 }
1756 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3034 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
1757 } 3035 }
1758 } 3036 }
1759 else
1760 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
1761 3037
1762 if (w->wd >= 0) 3038 if (w->wd >= 0)
1763 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3039 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
3040
3041 /* now re-arm timer, if required */
3042 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3043 ev_timer_again (EV_A_ &w->timer);
3044 if (ev_is_active (&w->timer)) ev_unref (EV_A);
1764} 3045}
1765 3046
1766static void noinline 3047static void noinline
1767infy_del (EV_P_ ev_stat *w) 3048infy_del (EV_P_ ev_stat *w)
1768{ 3049{
… …
1771 3052
1772 if (wd < 0) 3053 if (wd < 0)
1773 return; 3054 return;
1774 3055
1775 w->wd = -2; 3056 w->wd = -2;
1776 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3057 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
1777 wlist_del (&fs_hash [slot].head, (WL)w); 3058 wlist_del (&fs_hash [slot].head, (WL)w);
1778 3059
1779 /* remove this watcher, if others are watching it, they will rearm */ 3060 /* remove this watcher, if others are watching it, they will rearm */
1780 inotify_rm_watch (fs_fd, wd); 3061 inotify_rm_watch (fs_fd, wd);
1781} 3062}
1782 3063
1783static void noinline 3064static void noinline
1784infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3065infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
1785{ 3066{
1786 if (slot < 0) 3067 if (slot < 0)
1787 /* overflow, need to check for all hahs slots */ 3068 /* overflow, need to check for all hash slots */
1788 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3069 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
1789 infy_wd (EV_A_ slot, wd, ev); 3070 infy_wd (EV_A_ slot, wd, ev);
1790 else 3071 else
1791 { 3072 {
1792 WL w_; 3073 WL w_;
1793 3074
1794 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3075 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
1795 { 3076 {
1796 ev_stat *w = (ev_stat *)w_; 3077 ev_stat *w = (ev_stat *)w_;
1797 w_ = w_->next; /* lets us remove this watcher and all before it */ 3078 w_ = w_->next; /* lets us remove this watcher and all before it */
1798 3079
1799 if (w->wd == wd || wd == -1) 3080 if (w->wd == wd || wd == -1)
1800 { 3081 {
1801 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3082 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
1802 { 3083 {
3084 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
1803 w->wd = -1; 3085 w->wd = -1;
1804 infy_add (EV_A_ w); /* re-add, no matter what */ 3086 infy_add (EV_A_ w); /* re-add, no matter what */
1805 } 3087 }
1806 3088
1807 stat_timer_cb (EV_A_ &w->timer, 0); 3089 stat_timer_cb (EV_A_ &w->timer, 0);
… …
1812 3094
1813static void 3095static void
1814infy_cb (EV_P_ ev_io *w, int revents) 3096infy_cb (EV_P_ ev_io *w, int revents)
1815{ 3097{
1816 char buf [EV_INOTIFY_BUFSIZE]; 3098 char buf [EV_INOTIFY_BUFSIZE];
1817 struct inotify_event *ev = (struct inotify_event *)buf;
1818 int ofs; 3099 int ofs;
1819 int len = read (fs_fd, buf, sizeof (buf)); 3100 int len = read (fs_fd, buf, sizeof (buf));
1820 3101
1821 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3102 for (ofs = 0; ofs < len; )
3103 {
3104 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
1822 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3105 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3106 ofs += sizeof (struct inotify_event) + ev->len;
3107 }
1823} 3108}
1824 3109
1825void inline_size 3110inline_size void
3111ev_check_2625 (EV_P)
3112{
3113 /* kernels < 2.6.25 are borked
3114 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3115 */
3116 if (ev_linux_version () < 0x020619)
3117 return;
3118
3119 fs_2625 = 1;
3120}
3121
3122inline_size int
3123infy_newfd (void)
3124{
3125#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3126 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3127 if (fd >= 0)
3128 return fd;
3129#endif
3130 return inotify_init ();
3131}
3132
3133inline_size void
1826infy_init (EV_P) 3134infy_init (EV_P)
1827{ 3135{
1828 if (fs_fd != -2) 3136 if (fs_fd != -2)
1829 return; 3137 return;
1830 3138
3139 fs_fd = -1;
3140
3141 ev_check_2625 (EV_A);
3142
1831 fs_fd = inotify_init (); 3143 fs_fd = infy_newfd ();
1832 3144
1833 if (fs_fd >= 0) 3145 if (fs_fd >= 0)
1834 { 3146 {
3147 fd_intern (fs_fd);
1835 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3148 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
1836 ev_set_priority (&fs_w, EV_MAXPRI); 3149 ev_set_priority (&fs_w, EV_MAXPRI);
1837 ev_io_start (EV_A_ &fs_w); 3150 ev_io_start (EV_A_ &fs_w);
3151 ev_unref (EV_A);
1838 } 3152 }
1839} 3153}
1840 3154
1841void inline_size 3155inline_size void
1842infy_fork (EV_P) 3156infy_fork (EV_P)
1843{ 3157{
1844 int slot; 3158 int slot;
1845 3159
1846 if (fs_fd < 0) 3160 if (fs_fd < 0)
1847 return; 3161 return;
1848 3162
3163 ev_ref (EV_A);
3164 ev_io_stop (EV_A_ &fs_w);
1849 close (fs_fd); 3165 close (fs_fd);
1850 fs_fd = inotify_init (); 3166 fs_fd = infy_newfd ();
1851 3167
3168 if (fs_fd >= 0)
3169 {
3170 fd_intern (fs_fd);
3171 ev_io_set (&fs_w, fs_fd, EV_READ);
3172 ev_io_start (EV_A_ &fs_w);
3173 ev_unref (EV_A);
3174 }
3175
1852 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3176 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
1853 { 3177 {
1854 WL w_ = fs_hash [slot].head; 3178 WL w_ = fs_hash [slot].head;
1855 fs_hash [slot].head = 0; 3179 fs_hash [slot].head = 0;
1856 3180
1857 while (w_) 3181 while (w_)
… …
1862 w->wd = -1; 3186 w->wd = -1;
1863 3187
1864 if (fs_fd >= 0) 3188 if (fs_fd >= 0)
1865 infy_add (EV_A_ w); /* re-add, no matter what */ 3189 infy_add (EV_A_ w); /* re-add, no matter what */
1866 else 3190 else
3191 {
3192 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3193 if (ev_is_active (&w->timer)) ev_ref (EV_A);
1867 ev_timer_start (EV_A_ &w->timer); 3194 ev_timer_again (EV_A_ &w->timer);
3195 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3196 }
1868 } 3197 }
1869
1870 } 3198 }
1871} 3199}
1872 3200
3201#endif
3202
3203#ifdef _WIN32
3204# define EV_LSTAT(p,b) _stati64 (p, b)
3205#else
3206# define EV_LSTAT(p,b) lstat (p, b)
1873#endif 3207#endif
1874 3208
1875void 3209void
1876ev_stat_stat (EV_P_ ev_stat *w) 3210ev_stat_stat (EV_P_ ev_stat *w)
1877{ 3211{
… …
1879 w->attr.st_nlink = 0; 3213 w->attr.st_nlink = 0;
1880 else if (!w->attr.st_nlink) 3214 else if (!w->attr.st_nlink)
1881 w->attr.st_nlink = 1; 3215 w->attr.st_nlink = 1;
1882} 3216}
1883 3217
1884void noinline 3218static void noinline
1885stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3219stat_timer_cb (EV_P_ ev_timer *w_, int revents)
1886{ 3220{
1887 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3221 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
1888 3222
1889 /* we copy this here each the time so that */ 3223 ev_statdata prev = w->attr;
1890 /* prev has the old value when the callback gets invoked */
1891 w->prev = w->attr;
1892 ev_stat_stat (EV_A_ w); 3224 ev_stat_stat (EV_A_ w);
1893 3225
1894 if (memcmp (&w->prev, &w->attr, sizeof (ev_statdata))) 3226 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
3227 if (
3228 prev.st_dev != w->attr.st_dev
3229 || prev.st_ino != w->attr.st_ino
3230 || prev.st_mode != w->attr.st_mode
3231 || prev.st_nlink != w->attr.st_nlink
3232 || prev.st_uid != w->attr.st_uid
3233 || prev.st_gid != w->attr.st_gid
3234 || prev.st_rdev != w->attr.st_rdev
3235 || prev.st_size != w->attr.st_size
3236 || prev.st_atime != w->attr.st_atime
3237 || prev.st_mtime != w->attr.st_mtime
3238 || prev.st_ctime != w->attr.st_ctime
1895 { 3239 ) {
3240 /* we only update w->prev on actual differences */
3241 /* in case we test more often than invoke the callback, */
3242 /* to ensure that prev is always different to attr */
3243 w->prev = prev;
3244
1896 #if EV_USE_INOTIFY 3245 #if EV_USE_INOTIFY
3246 if (fs_fd >= 0)
3247 {
1897 infy_del (EV_A_ w); 3248 infy_del (EV_A_ w);
1898 infy_add (EV_A_ w); 3249 infy_add (EV_A_ w);
1899 ev_stat_stat (EV_A_ w); /* avoid race... */ 3250 ev_stat_stat (EV_A_ w); /* avoid race... */
3251 }
1900 #endif 3252 #endif
1901 3253
1902 ev_feed_event (EV_A_ w, EV_STAT); 3254 ev_feed_event (EV_A_ w, EV_STAT);
1903 } 3255 }
1904} 3256}
… …
1907ev_stat_start (EV_P_ ev_stat *w) 3259ev_stat_start (EV_P_ ev_stat *w)
1908{ 3260{
1909 if (expect_false (ev_is_active (w))) 3261 if (expect_false (ev_is_active (w)))
1910 return; 3262 return;
1911 3263
1912 /* since we use memcmp, we need to clear any padding data etc. */
1913 memset (&w->prev, 0, sizeof (ev_statdata));
1914 memset (&w->attr, 0, sizeof (ev_statdata));
1915
1916 ev_stat_stat (EV_A_ w); 3264 ev_stat_stat (EV_A_ w);
1917 3265
3266 if (w->interval < MIN_STAT_INTERVAL && w->interval)
1918 if (w->interval < MIN_STAT_INTERVAL) 3267 w->interval = MIN_STAT_INTERVAL;
1919 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
1920 3268
1921 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 3269 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
1922 ev_set_priority (&w->timer, ev_priority (w)); 3270 ev_set_priority (&w->timer, ev_priority (w));
1923 3271
1924#if EV_USE_INOTIFY 3272#if EV_USE_INOTIFY
1925 infy_init (EV_A); 3273 infy_init (EV_A);
1926 3274
1927 if (fs_fd >= 0) 3275 if (fs_fd >= 0)
1928 infy_add (EV_A_ w); 3276 infy_add (EV_A_ w);
1929 else 3277 else
1930#endif 3278#endif
3279 {
1931 ev_timer_start (EV_A_ &w->timer); 3280 ev_timer_again (EV_A_ &w->timer);
3281 ev_unref (EV_A);
3282 }
1932 3283
1933 ev_start (EV_A_ (W)w, 1); 3284 ev_start (EV_A_ (W)w, 1);
3285
3286 EV_FREQUENT_CHECK;
1934} 3287}
1935 3288
1936void 3289void
1937ev_stat_stop (EV_P_ ev_stat *w) 3290ev_stat_stop (EV_P_ ev_stat *w)
1938{ 3291{
1939 ev_clear_pending (EV_A_ (W)w); 3292 clear_pending (EV_A_ (W)w);
1940 if (expect_false (!ev_is_active (w))) 3293 if (expect_false (!ev_is_active (w)))
1941 return; 3294 return;
1942 3295
3296 EV_FREQUENT_CHECK;
3297
1943#if EV_USE_INOTIFY 3298#if EV_USE_INOTIFY
1944 infy_del (EV_A_ w); 3299 infy_del (EV_A_ w);
1945#endif 3300#endif
3301
3302 if (ev_is_active (&w->timer))
3303 {
3304 ev_ref (EV_A);
1946 ev_timer_stop (EV_A_ &w->timer); 3305 ev_timer_stop (EV_A_ &w->timer);
3306 }
1947 3307
1948 ev_stop (EV_A_ (W)w); 3308 ev_stop (EV_A_ (W)w);
1949}
1950#endif
1951 3309
3310 EV_FREQUENT_CHECK;
3311}
3312#endif
3313
3314#if EV_IDLE_ENABLE
1952void 3315void
1953ev_idle_start (EV_P_ ev_idle *w) 3316ev_idle_start (EV_P_ ev_idle *w)
1954{ 3317{
1955 if (expect_false (ev_is_active (w))) 3318 if (expect_false (ev_is_active (w)))
1956 return; 3319 return;
1957 3320
3321 pri_adjust (EV_A_ (W)w);
3322
3323 EV_FREQUENT_CHECK;
3324
3325 {
3326 int active = ++idlecnt [ABSPRI (w)];
3327
3328 ++idleall;
1958 ev_start (EV_A_ (W)w, ++idlecnt); 3329 ev_start (EV_A_ (W)w, active);
3330
1959 array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2); 3331 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
1960 idles [idlecnt - 1] = w; 3332 idles [ABSPRI (w)][active - 1] = w;
3333 }
3334
3335 EV_FREQUENT_CHECK;
1961} 3336}
1962 3337
1963void 3338void
1964ev_idle_stop (EV_P_ ev_idle *w) 3339ev_idle_stop (EV_P_ ev_idle *w)
1965{ 3340{
1966 ev_clear_pending (EV_A_ (W)w); 3341 clear_pending (EV_A_ (W)w);
1967 if (expect_false (!ev_is_active (w))) 3342 if (expect_false (!ev_is_active (w)))
1968 return; 3343 return;
1969 3344
3345 EV_FREQUENT_CHECK;
3346
1970 { 3347 {
1971 int active = ((W)w)->active; 3348 int active = ev_active (w);
1972 idles [active - 1] = idles [--idlecnt]; 3349
1973 ((W)idles [active - 1])->active = active; 3350 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
3351 ev_active (idles [ABSPRI (w)][active - 1]) = active;
3352
3353 ev_stop (EV_A_ (W)w);
3354 --idleall;
1974 } 3355 }
1975 3356
1976 ev_stop (EV_A_ (W)w); 3357 EV_FREQUENT_CHECK;
1977} 3358}
3359#endif
1978 3360
3361#if EV_PREPARE_ENABLE
1979void 3362void
1980ev_prepare_start (EV_P_ ev_prepare *w) 3363ev_prepare_start (EV_P_ ev_prepare *w)
1981{ 3364{
1982 if (expect_false (ev_is_active (w))) 3365 if (expect_false (ev_is_active (w)))
1983 return; 3366 return;
3367
3368 EV_FREQUENT_CHECK;
1984 3369
1985 ev_start (EV_A_ (W)w, ++preparecnt); 3370 ev_start (EV_A_ (W)w, ++preparecnt);
1986 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 3371 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1987 prepares [preparecnt - 1] = w; 3372 prepares [preparecnt - 1] = w;
3373
3374 EV_FREQUENT_CHECK;
1988} 3375}
1989 3376
1990void 3377void
1991ev_prepare_stop (EV_P_ ev_prepare *w) 3378ev_prepare_stop (EV_P_ ev_prepare *w)
1992{ 3379{
1993 ev_clear_pending (EV_A_ (W)w); 3380 clear_pending (EV_A_ (W)w);
1994 if (expect_false (!ev_is_active (w))) 3381 if (expect_false (!ev_is_active (w)))
1995 return; 3382 return;
1996 3383
3384 EV_FREQUENT_CHECK;
3385
1997 { 3386 {
1998 int active = ((W)w)->active; 3387 int active = ev_active (w);
3388
1999 prepares [active - 1] = prepares [--preparecnt]; 3389 prepares [active - 1] = prepares [--preparecnt];
2000 ((W)prepares [active - 1])->active = active; 3390 ev_active (prepares [active - 1]) = active;
2001 } 3391 }
2002 3392
2003 ev_stop (EV_A_ (W)w); 3393 ev_stop (EV_A_ (W)w);
2004}
2005 3394
3395 EV_FREQUENT_CHECK;
3396}
3397#endif
3398
3399#if EV_CHECK_ENABLE
2006void 3400void
2007ev_check_start (EV_P_ ev_check *w) 3401ev_check_start (EV_P_ ev_check *w)
2008{ 3402{
2009 if (expect_false (ev_is_active (w))) 3403 if (expect_false (ev_is_active (w)))
2010 return; 3404 return;
3405
3406 EV_FREQUENT_CHECK;
2011 3407
2012 ev_start (EV_A_ (W)w, ++checkcnt); 3408 ev_start (EV_A_ (W)w, ++checkcnt);
2013 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 3409 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2014 checks [checkcnt - 1] = w; 3410 checks [checkcnt - 1] = w;
3411
3412 EV_FREQUENT_CHECK;
2015} 3413}
2016 3414
2017void 3415void
2018ev_check_stop (EV_P_ ev_check *w) 3416ev_check_stop (EV_P_ ev_check *w)
2019{ 3417{
2020 ev_clear_pending (EV_A_ (W)w); 3418 clear_pending (EV_A_ (W)w);
2021 if (expect_false (!ev_is_active (w))) 3419 if (expect_false (!ev_is_active (w)))
2022 return; 3420 return;
2023 3421
3422 EV_FREQUENT_CHECK;
3423
2024 { 3424 {
2025 int active = ((W)w)->active; 3425 int active = ev_active (w);
3426
2026 checks [active - 1] = checks [--checkcnt]; 3427 checks [active - 1] = checks [--checkcnt];
2027 ((W)checks [active - 1])->active = active; 3428 ev_active (checks [active - 1]) = active;
2028 } 3429 }
2029 3430
2030 ev_stop (EV_A_ (W)w); 3431 ev_stop (EV_A_ (W)w);
3432
3433 EV_FREQUENT_CHECK;
2031} 3434}
3435#endif
2032 3436
2033#if EV_EMBED_ENABLE 3437#if EV_EMBED_ENABLE
2034void noinline 3438void noinline
2035ev_embed_sweep (EV_P_ ev_embed *w) 3439ev_embed_sweep (EV_P_ ev_embed *w)
2036{ 3440{
2037 ev_loop (w->loop, EVLOOP_NONBLOCK); 3441 ev_run (w->other, EVRUN_NOWAIT);
2038} 3442}
2039 3443
2040static void 3444static void
2041embed_cb (EV_P_ ev_io *io, int revents) 3445embed_io_cb (EV_P_ ev_io *io, int revents)
2042{ 3446{
2043 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 3447 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2044 3448
2045 if (ev_cb (w)) 3449 if (ev_cb (w))
2046 ev_feed_event (EV_A_ (W)w, EV_EMBED); 3450 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2047 else 3451 else
2048 ev_embed_sweep (loop, w); 3452 ev_run (w->other, EVRUN_NOWAIT);
2049} 3453}
3454
3455static void
3456embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3457{
3458 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
3459
3460 {
3461 EV_P = w->other;
3462
3463 while (fdchangecnt)
3464 {
3465 fd_reify (EV_A);
3466 ev_run (EV_A_ EVRUN_NOWAIT);
3467 }
3468 }
3469}
3470
3471static void
3472embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
3473{
3474 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3475
3476 ev_embed_stop (EV_A_ w);
3477
3478 {
3479 EV_P = w->other;
3480
3481 ev_loop_fork (EV_A);
3482 ev_run (EV_A_ EVRUN_NOWAIT);
3483 }
3484
3485 ev_embed_start (EV_A_ w);
3486}
3487
3488#if 0
3489static void
3490embed_idle_cb (EV_P_ ev_idle *idle, int revents)
3491{
3492 ev_idle_stop (EV_A_ idle);
3493}
3494#endif
2050 3495
2051void 3496void
2052ev_embed_start (EV_P_ ev_embed *w) 3497ev_embed_start (EV_P_ ev_embed *w)
2053{ 3498{
2054 if (expect_false (ev_is_active (w))) 3499 if (expect_false (ev_is_active (w)))
2055 return; 3500 return;
2056 3501
2057 { 3502 {
2058 struct ev_loop *loop = w->loop; 3503 EV_P = w->other;
2059 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3504 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2060 ev_io_init (&w->io, embed_cb, backend_fd, EV_READ); 3505 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2061 } 3506 }
3507
3508 EV_FREQUENT_CHECK;
2062 3509
2063 ev_set_priority (&w->io, ev_priority (w)); 3510 ev_set_priority (&w->io, ev_priority (w));
2064 ev_io_start (EV_A_ &w->io); 3511 ev_io_start (EV_A_ &w->io);
2065 3512
3513 ev_prepare_init (&w->prepare, embed_prepare_cb);
3514 ev_set_priority (&w->prepare, EV_MINPRI);
3515 ev_prepare_start (EV_A_ &w->prepare);
3516
3517 ev_fork_init (&w->fork, embed_fork_cb);
3518 ev_fork_start (EV_A_ &w->fork);
3519
3520 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
3521
2066 ev_start (EV_A_ (W)w, 1); 3522 ev_start (EV_A_ (W)w, 1);
3523
3524 EV_FREQUENT_CHECK;
2067} 3525}
2068 3526
2069void 3527void
2070ev_embed_stop (EV_P_ ev_embed *w) 3528ev_embed_stop (EV_P_ ev_embed *w)
2071{ 3529{
2072 ev_clear_pending (EV_A_ (W)w); 3530 clear_pending (EV_A_ (W)w);
2073 if (expect_false (!ev_is_active (w))) 3531 if (expect_false (!ev_is_active (w)))
2074 return; 3532 return;
2075 3533
3534 EV_FREQUENT_CHECK;
3535
2076 ev_io_stop (EV_A_ &w->io); 3536 ev_io_stop (EV_A_ &w->io);
3537 ev_prepare_stop (EV_A_ &w->prepare);
3538 ev_fork_stop (EV_A_ &w->fork);
2077 3539
2078 ev_stop (EV_A_ (W)w); 3540 ev_stop (EV_A_ (W)w);
3541
3542 EV_FREQUENT_CHECK;
2079} 3543}
2080#endif 3544#endif
2081 3545
2082#if EV_FORK_ENABLE 3546#if EV_FORK_ENABLE
2083void 3547void
2084ev_fork_start (EV_P_ ev_fork *w) 3548ev_fork_start (EV_P_ ev_fork *w)
2085{ 3549{
2086 if (expect_false (ev_is_active (w))) 3550 if (expect_false (ev_is_active (w)))
2087 return; 3551 return;
3552
3553 EV_FREQUENT_CHECK;
2088 3554
2089 ev_start (EV_A_ (W)w, ++forkcnt); 3555 ev_start (EV_A_ (W)w, ++forkcnt);
2090 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 3556 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2091 forks [forkcnt - 1] = w; 3557 forks [forkcnt - 1] = w;
3558
3559 EV_FREQUENT_CHECK;
2092} 3560}
2093 3561
2094void 3562void
2095ev_fork_stop (EV_P_ ev_fork *w) 3563ev_fork_stop (EV_P_ ev_fork *w)
2096{ 3564{
2097 ev_clear_pending (EV_A_ (W)w); 3565 clear_pending (EV_A_ (W)w);
2098 if (expect_false (!ev_is_active (w))) 3566 if (expect_false (!ev_is_active (w)))
2099 return; 3567 return;
2100 3568
3569 EV_FREQUENT_CHECK;
3570
2101 { 3571 {
2102 int active = ((W)w)->active; 3572 int active = ev_active (w);
3573
2103 forks [active - 1] = forks [--forkcnt]; 3574 forks [active - 1] = forks [--forkcnt];
2104 ((W)forks [active - 1])->active = active; 3575 ev_active (forks [active - 1]) = active;
2105 } 3576 }
2106 3577
2107 ev_stop (EV_A_ (W)w); 3578 ev_stop (EV_A_ (W)w);
3579
3580 EV_FREQUENT_CHECK;
3581}
3582#endif
3583
3584#if EV_CLEANUP_ENABLE
3585void
3586ev_cleanup_start (EV_P_ ev_cleanup *w)
3587{
3588 if (expect_false (ev_is_active (w)))
3589 return;
3590
3591 EV_FREQUENT_CHECK;
3592
3593 ev_start (EV_A_ (W)w, ++cleanupcnt);
3594 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
3595 cleanups [cleanupcnt - 1] = w;
3596
3597 EV_FREQUENT_CHECK;
3598}
3599
3600void
3601ev_cleanup_stop (EV_P_ ev_cleanup *w)
3602{
3603 clear_pending (EV_A_ (W)w);
3604 if (expect_false (!ev_is_active (w)))
3605 return;
3606
3607 EV_FREQUENT_CHECK;
3608
3609 {
3610 int active = ev_active (w);
3611
3612 cleanups [active - 1] = cleanups [--cleanupcnt];
3613 ev_active (cleanups [active - 1]) = active;
3614 }
3615
3616 ev_stop (EV_A_ (W)w);
3617
3618 EV_FREQUENT_CHECK;
3619}
3620#endif
3621
3622#if EV_ASYNC_ENABLE
3623void
3624ev_async_start (EV_P_ ev_async *w)
3625{
3626 if (expect_false (ev_is_active (w)))
3627 return;
3628
3629 w->sent = 0;
3630
3631 evpipe_init (EV_A);
3632
3633 EV_FREQUENT_CHECK;
3634
3635 ev_start (EV_A_ (W)w, ++asynccnt);
3636 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
3637 asyncs [asynccnt - 1] = w;
3638
3639 EV_FREQUENT_CHECK;
3640}
3641
3642void
3643ev_async_stop (EV_P_ ev_async *w)
3644{
3645 clear_pending (EV_A_ (W)w);
3646 if (expect_false (!ev_is_active (w)))
3647 return;
3648
3649 EV_FREQUENT_CHECK;
3650
3651 {
3652 int active = ev_active (w);
3653
3654 asyncs [active - 1] = asyncs [--asynccnt];
3655 ev_active (asyncs [active - 1]) = active;
3656 }
3657
3658 ev_stop (EV_A_ (W)w);
3659
3660 EV_FREQUENT_CHECK;
3661}
3662
3663void
3664ev_async_send (EV_P_ ev_async *w)
3665{
3666 w->sent = 1;
3667 evpipe_write (EV_A_ &async_pending);
2108} 3668}
2109#endif 3669#endif
2110 3670
2111/*****************************************************************************/ 3671/*****************************************************************************/
2112 3672
… …
2122once_cb (EV_P_ struct ev_once *once, int revents) 3682once_cb (EV_P_ struct ev_once *once, int revents)
2123{ 3683{
2124 void (*cb)(int revents, void *arg) = once->cb; 3684 void (*cb)(int revents, void *arg) = once->cb;
2125 void *arg = once->arg; 3685 void *arg = once->arg;
2126 3686
2127 ev_io_stop (EV_A_ &once->io); 3687 ev_io_stop (EV_A_ &once->io);
2128 ev_timer_stop (EV_A_ &once->to); 3688 ev_timer_stop (EV_A_ &once->to);
2129 ev_free (once); 3689 ev_free (once);
2130 3690
2131 cb (revents, arg); 3691 cb (revents, arg);
2132} 3692}
2133 3693
2134static void 3694static void
2135once_cb_io (EV_P_ ev_io *w, int revents) 3695once_cb_io (EV_P_ ev_io *w, int revents)
2136{ 3696{
2137 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 3697 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
3698
3699 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2138} 3700}
2139 3701
2140static void 3702static void
2141once_cb_to (EV_P_ ev_timer *w, int revents) 3703once_cb_to (EV_P_ ev_timer *w, int revents)
2142{ 3704{
2143 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 3705 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
3706
3707 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2144} 3708}
2145 3709
2146void 3710void
2147ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 3711ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2148{ 3712{
2149 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 3713 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
2150 3714
2151 if (expect_false (!once)) 3715 if (expect_false (!once))
2152 { 3716 {
2153 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 3717 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
2154 return; 3718 return;
2155 } 3719 }
2156 3720
2157 once->cb = cb; 3721 once->cb = cb;
2158 once->arg = arg; 3722 once->arg = arg;
… …
2170 ev_timer_set (&once->to, timeout, 0.); 3734 ev_timer_set (&once->to, timeout, 0.);
2171 ev_timer_start (EV_A_ &once->to); 3735 ev_timer_start (EV_A_ &once->to);
2172 } 3736 }
2173} 3737}
2174 3738
2175#ifdef __cplusplus 3739/*****************************************************************************/
2176} 3740
3741#if EV_WALK_ENABLE
3742void
3743ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3744{
3745 int i, j;
3746 ev_watcher_list *wl, *wn;
3747
3748 if (types & (EV_IO | EV_EMBED))
3749 for (i = 0; i < anfdmax; ++i)
3750 for (wl = anfds [i].head; wl; )
3751 {
3752 wn = wl->next;
3753
3754#if EV_EMBED_ENABLE
3755 if (ev_cb ((ev_io *)wl) == embed_io_cb)
3756 {
3757 if (types & EV_EMBED)
3758 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
3759 }
3760 else
3761#endif
3762#if EV_USE_INOTIFY
3763 if (ev_cb ((ev_io *)wl) == infy_cb)
3764 ;
3765 else
3766#endif
3767 if ((ev_io *)wl != &pipe_w)
3768 if (types & EV_IO)
3769 cb (EV_A_ EV_IO, wl);
3770
3771 wl = wn;
3772 }
3773
3774 if (types & (EV_TIMER | EV_STAT))
3775 for (i = timercnt + HEAP0; i-- > HEAP0; )
3776#if EV_STAT_ENABLE
3777 /*TODO: timer is not always active*/
3778 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
3779 {
3780 if (types & EV_STAT)
3781 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
3782 }
3783 else
3784#endif
3785 if (types & EV_TIMER)
3786 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
3787
3788#if EV_PERIODIC_ENABLE
3789 if (types & EV_PERIODIC)
3790 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
3791 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3792#endif
3793
3794#if EV_IDLE_ENABLE
3795 if (types & EV_IDLE)
3796 for (j = NUMPRI; i--; )
3797 for (i = idlecnt [j]; i--; )
3798 cb (EV_A_ EV_IDLE, idles [j][i]);
3799#endif
3800
3801#if EV_FORK_ENABLE
3802 if (types & EV_FORK)
3803 for (i = forkcnt; i--; )
3804 if (ev_cb (forks [i]) != embed_fork_cb)
3805 cb (EV_A_ EV_FORK, forks [i]);
3806#endif
3807
3808#if EV_ASYNC_ENABLE
3809 if (types & EV_ASYNC)
3810 for (i = asynccnt; i--; )
3811 cb (EV_A_ EV_ASYNC, asyncs [i]);
3812#endif
3813
3814#if EV_PREPARE_ENABLE
3815 if (types & EV_PREPARE)
3816 for (i = preparecnt; i--; )
3817# if EV_EMBED_ENABLE
3818 if (ev_cb (prepares [i]) != embed_prepare_cb)
2177#endif 3819# endif
3820 cb (EV_A_ EV_PREPARE, prepares [i]);
3821#endif
2178 3822
3823#if EV_CHECK_ENABLE
3824 if (types & EV_CHECK)
3825 for (i = checkcnt; i--; )
3826 cb (EV_A_ EV_CHECK, checks [i]);
3827#endif
3828
3829#if EV_SIGNAL_ENABLE
3830 if (types & EV_SIGNAL)
3831 for (i = 0; i < EV_NSIG - 1; ++i)
3832 for (wl = signals [i].head; wl; )
3833 {
3834 wn = wl->next;
3835 cb (EV_A_ EV_SIGNAL, wl);
3836 wl = wn;
3837 }
3838#endif
3839
3840#if EV_CHILD_ENABLE
3841 if (types & EV_CHILD)
3842 for (i = (EV_PID_HASHSIZE); i--; )
3843 for (wl = childs [i]; wl; )
3844 {
3845 wn = wl->next;
3846 cb (EV_A_ EV_CHILD, wl);
3847 wl = wn;
3848 }
3849#endif
3850/* EV_STAT 0x00001000 /* stat data changed */
3851/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3852}
3853#endif
3854
3855#if EV_MULTIPLICITY
3856 #include "ev_wrap.h"
3857#endif
3858
3859EV_CPP(})
3860

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