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Comparing libev/ev.c (file contents):
Revision 1.169 by root, Sat Dec 8 14:27:39 2007 UTC vs.
Revision 1.371 by root, Mon Feb 7 21:45:32 2011 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) 2007,2008,2009,2010,2011 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/* hp-ux has it in sys/time.h, which we unconditionally include above */
382# if !defined(_WIN32) && !defined(__hpux)
383# include <sys/select.h>
384# endif
385#endif
386
387#if EV_USE_INOTIFY
388# include <sys/statfs.h>
389# include <sys/inotify.h>
390/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
391# ifndef IN_DONT_FOLLOW
392# undef EV_USE_INOTIFY
393# define EV_USE_INOTIFY 0
394# endif
395#endif
396
207#if EV_SELECT_IS_WINSOCKET 397#if EV_SELECT_IS_WINSOCKET
208# include <winsock.h> 398# include <winsock.h>
209#endif 399#endif
210 400
211#if !EV_STAT_ENABLE 401#if EV_USE_EVENTFD
212# define EV_USE_INOTIFY 0 402/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
403# include <stdint.h>
404# ifndef EFD_NONBLOCK
405# define EFD_NONBLOCK O_NONBLOCK
213#endif 406# endif
407# ifndef EFD_CLOEXEC
408# ifdef O_CLOEXEC
409# define EFD_CLOEXEC O_CLOEXEC
410# else
411# define EFD_CLOEXEC 02000000
412# endif
413# endif
414EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
415#endif
214 416
215#if EV_USE_INOTIFY 417#if EV_USE_SIGNALFD
418/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
216# include <sys/inotify.h> 419# include <stdint.h>
420# ifndef SFD_NONBLOCK
421# define SFD_NONBLOCK O_NONBLOCK
422# endif
423# ifndef SFD_CLOEXEC
424# ifdef O_CLOEXEC
425# define SFD_CLOEXEC O_CLOEXEC
426# else
427# define SFD_CLOEXEC 02000000
428# endif
429# endif
430EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
431
432struct signalfd_siginfo
433{
434 uint32_t ssi_signo;
435 char pad[128 - sizeof (uint32_t)];
436};
217#endif 437#endif
218 438
219/**/ 439/**/
440
441#if EV_VERIFY >= 3
442# define EV_FREQUENT_CHECK ev_verify (EV_A)
443#else
444# define EV_FREQUENT_CHECK do { } while (0)
445#endif
446
447/*
448 * This is used to avoid floating point rounding problems.
449 * It is added to ev_rt_now when scheduling periodics
450 * to ensure progress, time-wise, even when rounding
451 * errors are against us.
452 * This value is good at least till the year 4000.
453 * Better solutions welcome.
454 */
455#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
220 456
221#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 457#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
222#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 458#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
223/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */
224 459
460#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
461#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
462
225#if __GNUC__ >= 3 463#if __GNUC__ >= 4
226# define expect(expr,value) __builtin_expect ((expr),(value)) 464# define expect(expr,value) __builtin_expect ((expr),(value))
227# define noinline __attribute__ ((noinline)) 465# define noinline __attribute__ ((noinline))
228#else 466#else
229# define expect(expr,value) (expr) 467# define expect(expr,value) (expr)
230# define noinline 468# define noinline
231# if __STDC_VERSION__ < 199901L 469# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
232# define inline 470# define inline
233# endif 471# endif
234#endif 472#endif
235 473
236#define expect_false(expr) expect ((expr) != 0, 0) 474#define expect_false(expr) expect ((expr) != 0, 0)
237#define expect_true(expr) expect ((expr) != 0, 1) 475#define expect_true(expr) expect ((expr) != 0, 1)
238#define inline_size static inline 476#define inline_size static inline
239 477
240#if EV_MINIMAL 478#if EV_FEATURE_CODE
479# define inline_speed static inline
480#else
241# define inline_speed static noinline 481# define inline_speed static noinline
482#endif
483
484#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
485
486#if EV_MINPRI == EV_MAXPRI
487# define ABSPRI(w) (((W)w), 0)
242#else 488#else
243# define inline_speed static inline
244#endif
245
246#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
247#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 489# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
490#endif
248 491
249#define EMPTY /* required for microsofts broken pseudo-c compiler */ 492#define EMPTY /* required for microsofts broken pseudo-c compiler */
250#define EMPTY2(a,b) /* used to suppress some warnings */ 493#define EMPTY2(a,b) /* used to suppress some warnings */
251 494
252typedef ev_watcher *W; 495typedef ev_watcher *W;
253typedef ev_watcher_list *WL; 496typedef ev_watcher_list *WL;
254typedef ev_watcher_time *WT; 497typedef ev_watcher_time *WT;
255 498
499#define ev_active(w) ((W)(w))->active
500#define ev_at(w) ((WT)(w))->at
501
502#if EV_USE_REALTIME
503/* sig_atomic_t is used to avoid per-thread variables or locking but still */
504/* giving it a reasonably high chance of working on typical architectures */
505static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
506#endif
507
508#if EV_USE_MONOTONIC
256static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 509static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
510#endif
511
512#ifndef EV_FD_TO_WIN32_HANDLE
513# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
514#endif
515#ifndef EV_WIN32_HANDLE_TO_FD
516# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
517#endif
518#ifndef EV_WIN32_CLOSE_FD
519# define EV_WIN32_CLOSE_FD(fd) close (fd)
520#endif
257 521
258#ifdef _WIN32 522#ifdef _WIN32
259# include "ev_win32.c" 523# include "ev_win32.c"
260#endif 524#endif
261 525
262/*****************************************************************************/ 526/*****************************************************************************/
263 527
528#ifdef __linux
529# include <sys/utsname.h>
530#endif
531
532static unsigned int noinline
533ev_linux_version (void)
534{
535#ifdef __linux
536 unsigned int v = 0;
537 struct utsname buf;
538 int i;
539 char *p = buf.release;
540
541 if (uname (&buf))
542 return 0;
543
544 for (i = 3+1; --i; )
545 {
546 unsigned int c = 0;
547
548 for (;;)
549 {
550 if (*p >= '0' && *p <= '9')
551 c = c * 10 + *p++ - '0';
552 else
553 {
554 p += *p == '.';
555 break;
556 }
557 }
558
559 v = (v << 8) | c;
560 }
561
562 return v;
563#else
564 return 0;
565#endif
566}
567
568/*****************************************************************************/
569
570#if EV_AVOID_STDIO
571static void noinline
572ev_printerr (const char *msg)
573{
574 write (STDERR_FILENO, msg, strlen (msg));
575}
576#endif
577
264static void (*syserr_cb)(const char *msg); 578static void (*syserr_cb)(const char *msg);
265 579
266void 580void
267ev_set_syserr_cb (void (*cb)(const char *msg)) 581ev_set_syserr_cb (void (*cb)(const char *msg))
268{ 582{
269 syserr_cb = cb; 583 syserr_cb = cb;
270} 584}
271 585
272static void noinline 586static void noinline
273syserr (const char *msg) 587ev_syserr (const char *msg)
274{ 588{
275 if (!msg) 589 if (!msg)
276 msg = "(libev) system error"; 590 msg = "(libev) system error";
277 591
278 if (syserr_cb) 592 if (syserr_cb)
279 syserr_cb (msg); 593 syserr_cb (msg);
280 else 594 else
281 { 595 {
596#if EV_AVOID_STDIO
597 ev_printerr (msg);
598 ev_printerr (": ");
599 ev_printerr (strerror (errno));
600 ev_printerr ("\n");
601#else
282 perror (msg); 602 perror (msg);
603#endif
283 abort (); 604 abort ();
284 } 605 }
285} 606}
286 607
608static void *
609ev_realloc_emul (void *ptr, long size)
610{
611#if __GLIBC__
612 return realloc (ptr, size);
613#else
614 /* some systems, notably openbsd and darwin, fail to properly
615 * implement realloc (x, 0) (as required by both ansi c-89 and
616 * the single unix specification, so work around them here.
617 */
618
619 if (size)
620 return realloc (ptr, size);
621
622 free (ptr);
623 return 0;
624#endif
625}
626
287static void *(*alloc)(void *ptr, long size); 627static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
288 628
289void 629void
290ev_set_allocator (void *(*cb)(void *ptr, long size)) 630ev_set_allocator (void *(*cb)(void *ptr, long size))
291{ 631{
292 alloc = cb; 632 alloc = cb;
293} 633}
294 634
295inline_speed void * 635inline_speed void *
296ev_realloc (void *ptr, long size) 636ev_realloc (void *ptr, long size)
297{ 637{
298 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); 638 ptr = alloc (ptr, size);
299 639
300 if (!ptr && size) 640 if (!ptr && size)
301 { 641 {
642#if EV_AVOID_STDIO
643 ev_printerr ("(libev) memory allocation failed, aborting.\n");
644#else
302 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 645 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
646#endif
303 abort (); 647 abort ();
304 } 648 }
305 649
306 return ptr; 650 return ptr;
307} 651}
… …
309#define ev_malloc(size) ev_realloc (0, (size)) 653#define ev_malloc(size) ev_realloc (0, (size))
310#define ev_free(ptr) ev_realloc ((ptr), 0) 654#define ev_free(ptr) ev_realloc ((ptr), 0)
311 655
312/*****************************************************************************/ 656/*****************************************************************************/
313 657
658/* set in reify when reification needed */
659#define EV_ANFD_REIFY 1
660
661/* file descriptor info structure */
314typedef struct 662typedef struct
315{ 663{
316 WL head; 664 WL head;
317 unsigned char events; 665 unsigned char events; /* the events watched for */
666 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
667 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
318 unsigned char reify; 668 unsigned char unused;
669#if EV_USE_EPOLL
670 unsigned int egen; /* generation counter to counter epoll bugs */
671#endif
319#if EV_SELECT_IS_WINSOCKET 672#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
320 SOCKET handle; 673 SOCKET handle;
321#endif 674#endif
675#if EV_USE_IOCP
676 OVERLAPPED or, ow;
677#endif
322} ANFD; 678} ANFD;
323 679
680/* stores the pending event set for a given watcher */
324typedef struct 681typedef struct
325{ 682{
326 W w; 683 W w;
327 int events; 684 int events; /* the pending event set for the given watcher */
328} ANPENDING; 685} ANPENDING;
329 686
330#if EV_USE_INOTIFY 687#if EV_USE_INOTIFY
688/* hash table entry per inotify-id */
331typedef struct 689typedef struct
332{ 690{
333 WL head; 691 WL head;
334} ANFS; 692} ANFS;
693#endif
694
695/* Heap Entry */
696#if EV_HEAP_CACHE_AT
697 /* a heap element */
698 typedef struct {
699 ev_tstamp at;
700 WT w;
701 } ANHE;
702
703 #define ANHE_w(he) (he).w /* access watcher, read-write */
704 #define ANHE_at(he) (he).at /* access cached at, read-only */
705 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
706#else
707 /* a heap element */
708 typedef WT ANHE;
709
710 #define ANHE_w(he) (he)
711 #define ANHE_at(he) (he)->at
712 #define ANHE_at_cache(he)
335#endif 713#endif
336 714
337#if EV_MULTIPLICITY 715#if EV_MULTIPLICITY
338 716
339 struct ev_loop 717 struct ev_loop
… …
358 736
359 static int ev_default_loop_ptr; 737 static int ev_default_loop_ptr;
360 738
361#endif 739#endif
362 740
741#if EV_FEATURE_API
742# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
743# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
744# define EV_INVOKE_PENDING invoke_cb (EV_A)
745#else
746# define EV_RELEASE_CB (void)0
747# define EV_ACQUIRE_CB (void)0
748# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
749#endif
750
751#define EVBREAK_RECURSE 0x80
752
363/*****************************************************************************/ 753/*****************************************************************************/
364 754
755#ifndef EV_HAVE_EV_TIME
365ev_tstamp 756ev_tstamp
366ev_time (void) 757ev_time (void)
367{ 758{
368#if EV_USE_REALTIME 759#if EV_USE_REALTIME
760 if (expect_true (have_realtime))
761 {
369 struct timespec ts; 762 struct timespec ts;
370 clock_gettime (CLOCK_REALTIME, &ts); 763 clock_gettime (CLOCK_REALTIME, &ts);
371 return ts.tv_sec + ts.tv_nsec * 1e-9; 764 return ts.tv_sec + ts.tv_nsec * 1e-9;
372#else 765 }
766#endif
767
373 struct timeval tv; 768 struct timeval tv;
374 gettimeofday (&tv, 0); 769 gettimeofday (&tv, 0);
375 return tv.tv_sec + tv.tv_usec * 1e-6; 770 return tv.tv_sec + tv.tv_usec * 1e-6;
376#endif
377} 771}
772#endif
378 773
379ev_tstamp inline_size 774inline_size ev_tstamp
380get_clock (void) 775get_clock (void)
381{ 776{
382#if EV_USE_MONOTONIC 777#if EV_USE_MONOTONIC
383 if (expect_true (have_monotonic)) 778 if (expect_true (have_monotonic))
384 { 779 {
… …
397{ 792{
398 return ev_rt_now; 793 return ev_rt_now;
399} 794}
400#endif 795#endif
401 796
402int inline_size 797void
798ev_sleep (ev_tstamp delay)
799{
800 if (delay > 0.)
801 {
802#if EV_USE_NANOSLEEP
803 struct timespec ts;
804
805 EV_TS_SET (ts, delay);
806 nanosleep (&ts, 0);
807#elif defined(_WIN32)
808 Sleep ((unsigned long)(delay * 1e3));
809#else
810 struct timeval tv;
811
812 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
813 /* something not guaranteed by newer posix versions, but guaranteed */
814 /* by older ones */
815 EV_TV_SET (tv, delay);
816 select (0, 0, 0, 0, &tv);
817#endif
818 }
819}
820
821inline_speed int
822ev_timeout_to_ms (ev_tstamp timeout)
823{
824 int ms = timeout * 1000. + .999999;
825
826 return expect_true (ms) ? ms : timeout < 1e-6 ? 0 : 1;
827}
828
829/*****************************************************************************/
830
831#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
832
833/* find a suitable new size for the given array, */
834/* hopefully by rounding to a nice-to-malloc size */
835inline_size int
403array_nextsize (int elem, int cur, int cnt) 836array_nextsize (int elem, int cur, int cnt)
404{ 837{
405 int ncur = cur + 1; 838 int ncur = cur + 1;
406 839
407 do 840 do
408 ncur <<= 1; 841 ncur <<= 1;
409 while (cnt > ncur); 842 while (cnt > ncur);
410 843
411 /* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */ 844 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */
412 if (elem * ncur > 4096) 845 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
413 { 846 {
414 ncur *= elem; 847 ncur *= elem;
415 ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095; 848 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
416 ncur = ncur - sizeof (void *) * 4; 849 ncur = ncur - sizeof (void *) * 4;
417 ncur /= elem; 850 ncur /= elem;
418 } 851 }
419 852
420 return ncur; 853 return ncur;
421} 854}
422 855
423inline_speed void * 856static noinline void *
424array_realloc (int elem, void *base, int *cur, int cnt) 857array_realloc (int elem, void *base, int *cur, int cnt)
425{ 858{
426 *cur = array_nextsize (elem, *cur, cnt); 859 *cur = array_nextsize (elem, *cur, cnt);
427 return ev_realloc (base, elem * *cur); 860 return ev_realloc (base, elem * *cur);
428} 861}
862
863#define array_init_zero(base,count) \
864 memset ((void *)(base), 0, sizeof (*(base)) * (count))
429 865
430#define array_needsize(type,base,cur,cnt,init) \ 866#define array_needsize(type,base,cur,cnt,init) \
431 if (expect_false ((cnt) > (cur))) \ 867 if (expect_false ((cnt) > (cur))) \
432 { \ 868 { \
433 int ocur_ = (cur); \ 869 int ocur_ = (cur); \
… …
445 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 881 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
446 } 882 }
447#endif 883#endif
448 884
449#define array_free(stem, idx) \ 885#define array_free(stem, idx) \
450 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 886 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
451 887
452/*****************************************************************************/ 888/*****************************************************************************/
889
890/* dummy callback for pending events */
891static void noinline
892pendingcb (EV_P_ ev_prepare *w, int revents)
893{
894}
453 895
454void noinline 896void noinline
455ev_feed_event (EV_P_ void *w, int revents) 897ev_feed_event (EV_P_ void *w, int revents)
456{ 898{
457 W w_ = (W)w; 899 W w_ = (W)w;
900 int pri = ABSPRI (w_);
458 901
459 if (expect_false (w_->pending)) 902 if (expect_false (w_->pending))
903 pendings [pri][w_->pending - 1].events |= revents;
904 else
460 { 905 {
906 w_->pending = ++pendingcnt [pri];
907 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
908 pendings [pri][w_->pending - 1].w = w_;
461 pendings [ABSPRI (w_)][w_->pending - 1].events |= revents; 909 pendings [pri][w_->pending - 1].events = revents;
462 return;
463 } 910 }
464
465 w_->pending = ++pendingcnt [ABSPRI (w_)];
466 array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
467 pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
468 pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
469} 911}
470 912
471void inline_size 913inline_speed void
914feed_reverse (EV_P_ W w)
915{
916 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
917 rfeeds [rfeedcnt++] = w;
918}
919
920inline_size void
921feed_reverse_done (EV_P_ int revents)
922{
923 do
924 ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
925 while (rfeedcnt);
926}
927
928inline_speed void
472queue_events (EV_P_ W *events, int eventcnt, int type) 929queue_events (EV_P_ W *events, int eventcnt, int type)
473{ 930{
474 int i; 931 int i;
475 932
476 for (i = 0; i < eventcnt; ++i) 933 for (i = 0; i < eventcnt; ++i)
477 ev_feed_event (EV_A_ events [i], type); 934 ev_feed_event (EV_A_ events [i], type);
478} 935}
479 936
480/*****************************************************************************/ 937/*****************************************************************************/
481 938
482void inline_size 939inline_speed void
483anfds_init (ANFD *base, int count)
484{
485 while (count--)
486 {
487 base->head = 0;
488 base->events = EV_NONE;
489 base->reify = 0;
490
491 ++base;
492 }
493}
494
495void inline_speed
496fd_event (EV_P_ int fd, int revents) 940fd_event_nocheck (EV_P_ int fd, int revents)
497{ 941{
498 ANFD *anfd = anfds + fd; 942 ANFD *anfd = anfds + fd;
499 ev_io *w; 943 ev_io *w;
500 944
501 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 945 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
505 if (ev) 949 if (ev)
506 ev_feed_event (EV_A_ (W)w, ev); 950 ev_feed_event (EV_A_ (W)w, ev);
507 } 951 }
508} 952}
509 953
954/* do not submit kernel events for fds that have reify set */
955/* because that means they changed while we were polling for new events */
956inline_speed void
957fd_event (EV_P_ int fd, int revents)
958{
959 ANFD *anfd = anfds + fd;
960
961 if (expect_true (!anfd->reify))
962 fd_event_nocheck (EV_A_ fd, revents);
963}
964
510void 965void
511ev_feed_fd_event (EV_P_ int fd, int revents) 966ev_feed_fd_event (EV_P_ int fd, int revents)
512{ 967{
513 if (fd >= 0 && fd < anfdmax) 968 if (fd >= 0 && fd < anfdmax)
514 fd_event (EV_A_ fd, revents); 969 fd_event_nocheck (EV_A_ fd, revents);
515} 970}
516 971
517void inline_size 972/* make sure the external fd watch events are in-sync */
973/* with the kernel/libev internal state */
974inline_size void
518fd_reify (EV_P) 975fd_reify (EV_P)
519{ 976{
520 int i; 977 int i;
978
979#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
980 for (i = 0; i < fdchangecnt; ++i)
981 {
982 int fd = fdchanges [i];
983 ANFD *anfd = anfds + fd;
984
985 if (anfd->reify & EV__IOFDSET)
986 {
987 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
988
989 if (handle != anfd->handle)
990 {
991 unsigned long arg;
992
993 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
994
995 /* handle changed, but fd didn't - we need to do it in two steps */
996 backend_modify (EV_A_ fd, anfd->events, 0);
997 anfd->events = 0;
998 anfd->handle = handle;
999 }
1000 }
1001 }
1002#endif
521 1003
522 for (i = 0; i < fdchangecnt; ++i) 1004 for (i = 0; i < fdchangecnt; ++i)
523 { 1005 {
524 int fd = fdchanges [i]; 1006 int fd = fdchanges [i];
525 ANFD *anfd = anfds + fd; 1007 ANFD *anfd = anfds + fd;
526 ev_io *w; 1008 ev_io *w;
527 1009
528 int events = 0; 1010 unsigned char o_events = anfd->events;
1011 unsigned char o_reify = anfd->reify;
529 1012
530 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1013 anfd->reify = 0;
531 events |= w->events;
532 1014
533#if EV_SELECT_IS_WINSOCKET 1015 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
534 if (events)
535 { 1016 {
536 unsigned long argp; 1017 anfd->events = 0;
537 anfd->handle = _get_osfhandle (fd); 1018
538 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); 1019 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
1020 anfd->events |= (unsigned char)w->events;
1021
1022 if (o_events != anfd->events)
1023 o_reify = EV__IOFDSET; /* actually |= */
539 } 1024 }
540#endif
541 1025
542 anfd->reify = 0; 1026 if (o_reify & EV__IOFDSET)
543
544 backend_modify (EV_A_ fd, anfd->events, events); 1027 backend_modify (EV_A_ fd, o_events, anfd->events);
545 anfd->events = events;
546 } 1028 }
547 1029
548 fdchangecnt = 0; 1030 fdchangecnt = 0;
549} 1031}
550 1032
551void inline_size 1033/* something about the given fd changed */
1034inline_size void
552fd_change (EV_P_ int fd) 1035fd_change (EV_P_ int fd, int flags)
553{ 1036{
554 if (expect_false (anfds [fd].reify)) 1037 unsigned char reify = anfds [fd].reify;
555 return;
556
557 anfds [fd].reify = 1; 1038 anfds [fd].reify |= flags;
558 1039
1040 if (expect_true (!reify))
1041 {
559 ++fdchangecnt; 1042 ++fdchangecnt;
560 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 1043 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
561 fdchanges [fdchangecnt - 1] = fd; 1044 fdchanges [fdchangecnt - 1] = fd;
1045 }
562} 1046}
563 1047
564void inline_speed 1048/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1049inline_speed void
565fd_kill (EV_P_ int fd) 1050fd_kill (EV_P_ int fd)
566{ 1051{
567 ev_io *w; 1052 ev_io *w;
568 1053
569 while ((w = (ev_io *)anfds [fd].head)) 1054 while ((w = (ev_io *)anfds [fd].head))
… …
571 ev_io_stop (EV_A_ w); 1056 ev_io_stop (EV_A_ w);
572 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1057 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
573 } 1058 }
574} 1059}
575 1060
576int inline_size 1061/* check whether the given fd is actually valid, for error recovery */
1062inline_size int
577fd_valid (int fd) 1063fd_valid (int fd)
578{ 1064{
579#ifdef _WIN32 1065#ifdef _WIN32
580 return _get_osfhandle (fd) != -1; 1066 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
581#else 1067#else
582 return fcntl (fd, F_GETFD) != -1; 1068 return fcntl (fd, F_GETFD) != -1;
583#endif 1069#endif
584} 1070}
585 1071
… …
589{ 1075{
590 int fd; 1076 int fd;
591 1077
592 for (fd = 0; fd < anfdmax; ++fd) 1078 for (fd = 0; fd < anfdmax; ++fd)
593 if (anfds [fd].events) 1079 if (anfds [fd].events)
594 if (!fd_valid (fd) == -1 && errno == EBADF) 1080 if (!fd_valid (fd) && errno == EBADF)
595 fd_kill (EV_A_ fd); 1081 fd_kill (EV_A_ fd);
596} 1082}
597 1083
598/* called on ENOMEM in select/poll to kill some fds and retry */ 1084/* called on ENOMEM in select/poll to kill some fds and retry */
599static void noinline 1085static void noinline
… …
603 1089
604 for (fd = anfdmax; fd--; ) 1090 for (fd = anfdmax; fd--; )
605 if (anfds [fd].events) 1091 if (anfds [fd].events)
606 { 1092 {
607 fd_kill (EV_A_ fd); 1093 fd_kill (EV_A_ fd);
608 return; 1094 break;
609 } 1095 }
610} 1096}
611 1097
612/* usually called after fork if backend needs to re-arm all fds from scratch */ 1098/* usually called after fork if backend needs to re-arm all fds from scratch */
613static void noinline 1099static void noinline
… …
617 1103
618 for (fd = 0; fd < anfdmax; ++fd) 1104 for (fd = 0; fd < anfdmax; ++fd)
619 if (anfds [fd].events) 1105 if (anfds [fd].events)
620 { 1106 {
621 anfds [fd].events = 0; 1107 anfds [fd].events = 0;
622 fd_change (EV_A_ fd); 1108 anfds [fd].emask = 0;
1109 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
623 } 1110 }
624} 1111}
625 1112
626/*****************************************************************************/ 1113/* used to prepare libev internal fd's */
627 1114/* this is not fork-safe */
628void inline_speed 1115inline_speed void
629upheap (WT *heap, int k)
630{
631 WT w = heap [k];
632
633 while (k && heap [k >> 1]->at > w->at)
634 {
635 heap [k] = heap [k >> 1];
636 ((W)heap [k])->active = k + 1;
637 k >>= 1;
638 }
639
640 heap [k] = w;
641 ((W)heap [k])->active = k + 1;
642
643}
644
645void inline_speed
646downheap (WT *heap, int N, int k)
647{
648 WT w = heap [k];
649
650 while (k < (N >> 1))
651 {
652 int j = k << 1;
653
654 if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
655 ++j;
656
657 if (w->at <= heap [j]->at)
658 break;
659
660 heap [k] = heap [j];
661 ((W)heap [k])->active = k + 1;
662 k = j;
663 }
664
665 heap [k] = w;
666 ((W)heap [k])->active = k + 1;
667}
668
669void inline_size
670adjustheap (WT *heap, int N, int k)
671{
672 upheap (heap, k);
673 downheap (heap, N, k);
674}
675
676/*****************************************************************************/
677
678typedef struct
679{
680 WL head;
681 sig_atomic_t volatile gotsig;
682} ANSIG;
683
684static ANSIG *signals;
685static int signalmax;
686
687static int sigpipe [2];
688static sig_atomic_t volatile gotsig;
689static ev_io sigev;
690
691void inline_size
692signals_init (ANSIG *base, int count)
693{
694 while (count--)
695 {
696 base->head = 0;
697 base->gotsig = 0;
698
699 ++base;
700 }
701}
702
703static void
704sighandler (int signum)
705{
706#if _WIN32
707 signal (signum, sighandler);
708#endif
709
710 signals [signum - 1].gotsig = 1;
711
712 if (!gotsig)
713 {
714 int old_errno = errno;
715 gotsig = 1;
716 write (sigpipe [1], &signum, 1);
717 errno = old_errno;
718 }
719}
720
721void noinline
722ev_feed_signal_event (EV_P_ int signum)
723{
724 WL w;
725
726#if EV_MULTIPLICITY
727 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
728#endif
729
730 --signum;
731
732 if (signum < 0 || signum >= signalmax)
733 return;
734
735 signals [signum].gotsig = 0;
736
737 for (w = signals [signum].head; w; w = w->next)
738 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
739}
740
741static void
742sigcb (EV_P_ ev_io *iow, int revents)
743{
744 int signum;
745
746 read (sigpipe [0], &revents, 1);
747 gotsig = 0;
748
749 for (signum = signalmax; signum--; )
750 if (signals [signum].gotsig)
751 ev_feed_signal_event (EV_A_ signum + 1);
752}
753
754void inline_size
755fd_intern (int fd) 1116fd_intern (int fd)
756{ 1117{
757#ifdef _WIN32 1118#ifdef _WIN32
758 int arg = 1; 1119 unsigned long arg = 1;
759 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 1120 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
760#else 1121#else
761 fcntl (fd, F_SETFD, FD_CLOEXEC); 1122 fcntl (fd, F_SETFD, FD_CLOEXEC);
762 fcntl (fd, F_SETFL, O_NONBLOCK); 1123 fcntl (fd, F_SETFL, O_NONBLOCK);
763#endif 1124#endif
764} 1125}
765 1126
1127/*****************************************************************************/
1128
1129/*
1130 * the heap functions want a real array index. array index 0 is guaranteed to not
1131 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
1132 * the branching factor of the d-tree.
1133 */
1134
1135/*
1136 * at the moment we allow libev the luxury of two heaps,
1137 * a small-code-size 2-heap one and a ~1.5kb larger 4-heap
1138 * which is more cache-efficient.
1139 * the difference is about 5% with 50000+ watchers.
1140 */
1141#if EV_USE_4HEAP
1142
1143#define DHEAP 4
1144#define HEAP0 (DHEAP - 1) /* index of first element in heap */
1145#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
1146#define UPHEAP_DONE(p,k) ((p) == (k))
1147
1148/* away from the root */
1149inline_speed void
1150downheap (ANHE *heap, int N, int k)
1151{
1152 ANHE he = heap [k];
1153 ANHE *E = heap + N + HEAP0;
1154
1155 for (;;)
1156 {
1157 ev_tstamp minat;
1158 ANHE *minpos;
1159 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
1160
1161 /* find minimum child */
1162 if (expect_true (pos + DHEAP - 1 < E))
1163 {
1164 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1165 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1166 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1167 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1168 }
1169 else if (pos < E)
1170 {
1171 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1172 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1173 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1174 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1175 }
1176 else
1177 break;
1178
1179 if (ANHE_at (he) <= minat)
1180 break;
1181
1182 heap [k] = *minpos;
1183 ev_active (ANHE_w (*minpos)) = k;
1184
1185 k = minpos - heap;
1186 }
1187
1188 heap [k] = he;
1189 ev_active (ANHE_w (he)) = k;
1190}
1191
1192#else /* 4HEAP */
1193
1194#define HEAP0 1
1195#define HPARENT(k) ((k) >> 1)
1196#define UPHEAP_DONE(p,k) (!(p))
1197
1198/* away from the root */
1199inline_speed void
1200downheap (ANHE *heap, int N, int k)
1201{
1202 ANHE he = heap [k];
1203
1204 for (;;)
1205 {
1206 int c = k << 1;
1207
1208 if (c >= N + HEAP0)
1209 break;
1210
1211 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
1212 ? 1 : 0;
1213
1214 if (ANHE_at (he) <= ANHE_at (heap [c]))
1215 break;
1216
1217 heap [k] = heap [c];
1218 ev_active (ANHE_w (heap [k])) = k;
1219
1220 k = c;
1221 }
1222
1223 heap [k] = he;
1224 ev_active (ANHE_w (he)) = k;
1225}
1226#endif
1227
1228/* towards the root */
1229inline_speed void
1230upheap (ANHE *heap, int k)
1231{
1232 ANHE he = heap [k];
1233
1234 for (;;)
1235 {
1236 int p = HPARENT (k);
1237
1238 if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
1239 break;
1240
1241 heap [k] = heap [p];
1242 ev_active (ANHE_w (heap [k])) = k;
1243 k = p;
1244 }
1245
1246 heap [k] = he;
1247 ev_active (ANHE_w (he)) = k;
1248}
1249
1250/* move an element suitably so it is in a correct place */
1251inline_size void
1252adjustheap (ANHE *heap, int N, int k)
1253{
1254 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1255 upheap (heap, k);
1256 else
1257 downheap (heap, N, k);
1258}
1259
1260/* rebuild the heap: this function is used only once and executed rarely */
1261inline_size void
1262reheap (ANHE *heap, int N)
1263{
1264 int i;
1265
1266 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
1267 /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
1268 for (i = 0; i < N; ++i)
1269 upheap (heap, i + HEAP0);
1270}
1271
1272/*****************************************************************************/
1273
1274/* associate signal watchers to a signal signal */
1275typedef struct
1276{
1277 EV_ATOMIC_T pending;
1278#if EV_MULTIPLICITY
1279 EV_P;
1280#endif
1281 WL head;
1282} ANSIG;
1283
1284static ANSIG signals [EV_NSIG - 1];
1285
1286/*****************************************************************************/
1287
1288#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1289
766static void noinline 1290static void noinline
767siginit (EV_P) 1291evpipe_init (EV_P)
768{ 1292{
1293 if (!ev_is_active (&pipe_w))
1294 {
1295# if EV_USE_EVENTFD
1296 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1297 if (evfd < 0 && errno == EINVAL)
1298 evfd = eventfd (0, 0);
1299
1300 if (evfd >= 0)
1301 {
1302 evpipe [0] = -1;
1303 fd_intern (evfd); /* doing it twice doesn't hurt */
1304 ev_io_set (&pipe_w, evfd, EV_READ);
1305 }
1306 else
1307# endif
1308 {
1309 while (pipe (evpipe))
1310 ev_syserr ("(libev) error creating signal/async pipe");
1311
769 fd_intern (sigpipe [0]); 1312 fd_intern (evpipe [0]);
770 fd_intern (sigpipe [1]); 1313 fd_intern (evpipe [1]);
1314 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1315 }
771 1316
772 ev_io_set (&sigev, sigpipe [0], EV_READ);
773 ev_io_start (EV_A_ &sigev); 1317 ev_io_start (EV_A_ &pipe_w);
774 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1318 ev_unref (EV_A); /* watcher should not keep loop alive */
1319 }
1320}
1321
1322inline_size void
1323evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1324{
1325 if (!*flag)
1326 {
1327 int old_errno = errno; /* save errno because write might clobber it */
1328 char dummy;
1329
1330 *flag = 1;
1331
1332#if EV_USE_EVENTFD
1333 if (evfd >= 0)
1334 {
1335 uint64_t counter = 1;
1336 write (evfd, &counter, sizeof (uint64_t));
1337 }
1338 else
1339#endif
1340 /* win32 people keep sending patches that change this write() to send() */
1341 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1342 /* so when you think this write should be a send instead, please find out */
1343 /* where your send() is from - it's definitely not the microsoft send, and */
1344 /* tell me. thank you. */
1345 write (evpipe [1], &dummy, 1);
1346
1347 errno = old_errno;
1348 }
1349}
1350
1351/* called whenever the libev signal pipe */
1352/* got some events (signal, async) */
1353static void
1354pipecb (EV_P_ ev_io *iow, int revents)
1355{
1356 int i;
1357
1358#if EV_USE_EVENTFD
1359 if (evfd >= 0)
1360 {
1361 uint64_t counter;
1362 read (evfd, &counter, sizeof (uint64_t));
1363 }
1364 else
1365#endif
1366 {
1367 char dummy;
1368 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1369 read (evpipe [0], &dummy, 1);
1370 }
1371
1372#if EV_SIGNAL_ENABLE
1373 if (sig_pending)
1374 {
1375 sig_pending = 0;
1376
1377 for (i = EV_NSIG - 1; i--; )
1378 if (expect_false (signals [i].pending))
1379 ev_feed_signal_event (EV_A_ i + 1);
1380 }
1381#endif
1382
1383#if EV_ASYNC_ENABLE
1384 if (async_pending)
1385 {
1386 async_pending = 0;
1387
1388 for (i = asynccnt; i--; )
1389 if (asyncs [i]->sent)
1390 {
1391 asyncs [i]->sent = 0;
1392 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1393 }
1394 }
1395#endif
775} 1396}
776 1397
777/*****************************************************************************/ 1398/*****************************************************************************/
778 1399
779static ev_child *childs [EV_PID_HASHSIZE]; 1400void
1401ev_feed_signal (int signum)
1402{
1403#if EV_MULTIPLICITY
1404 EV_P = signals [signum - 1].loop;
780 1405
1406 if (!EV_A)
1407 return;
1408#endif
1409
1410 signals [signum - 1].pending = 1;
1411 evpipe_write (EV_A_ &sig_pending);
1412}
1413
1414static void
1415ev_sighandler (int signum)
1416{
781#ifndef _WIN32 1417#ifdef _WIN32
1418 signal (signum, ev_sighandler);
1419#endif
1420
1421 ev_feed_signal (signum);
1422}
1423
1424void noinline
1425ev_feed_signal_event (EV_P_ int signum)
1426{
1427 WL w;
1428
1429 if (expect_false (signum <= 0 || signum > EV_NSIG))
1430 return;
1431
1432 --signum;
1433
1434#if EV_MULTIPLICITY
1435 /* it is permissible to try to feed a signal to the wrong loop */
1436 /* or, likely more useful, feeding a signal nobody is waiting for */
1437
1438 if (expect_false (signals [signum].loop != EV_A))
1439 return;
1440#endif
1441
1442 signals [signum].pending = 0;
1443
1444 for (w = signals [signum].head; w; w = w->next)
1445 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1446}
1447
1448#if EV_USE_SIGNALFD
1449static void
1450sigfdcb (EV_P_ ev_io *iow, int revents)
1451{
1452 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1453
1454 for (;;)
1455 {
1456 ssize_t res = read (sigfd, si, sizeof (si));
1457
1458 /* not ISO-C, as res might be -1, but works with SuS */
1459 for (sip = si; (char *)sip < (char *)si + res; ++sip)
1460 ev_feed_signal_event (EV_A_ sip->ssi_signo);
1461
1462 if (res < (ssize_t)sizeof (si))
1463 break;
1464 }
1465}
1466#endif
1467
1468#endif
1469
1470/*****************************************************************************/
1471
1472#if EV_CHILD_ENABLE
1473static WL childs [EV_PID_HASHSIZE];
782 1474
783static ev_signal childev; 1475static ev_signal childev;
784 1476
785void inline_speed 1477#ifndef WIFCONTINUED
1478# define WIFCONTINUED(status) 0
1479#endif
1480
1481/* handle a single child status event */
1482inline_speed void
786child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status) 1483child_reap (EV_P_ int chain, int pid, int status)
787{ 1484{
788 ev_child *w; 1485 ev_child *w;
1486 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
789 1487
790 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1488 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1489 {
791 if (w->pid == pid || !w->pid) 1490 if ((w->pid == pid || !w->pid)
1491 && (!traced || (w->flags & 1)))
792 { 1492 {
793 ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */ 1493 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
794 w->rpid = pid; 1494 w->rpid = pid;
795 w->rstatus = status; 1495 w->rstatus = status;
796 ev_feed_event (EV_A_ (W)w, EV_CHILD); 1496 ev_feed_event (EV_A_ (W)w, EV_CHILD);
797 } 1497 }
1498 }
798} 1499}
799 1500
800#ifndef WCONTINUED 1501#ifndef WCONTINUED
801# define WCONTINUED 0 1502# define WCONTINUED 0
802#endif 1503#endif
803 1504
1505/* called on sigchld etc., calls waitpid */
804static void 1506static void
805childcb (EV_P_ ev_signal *sw, int revents) 1507childcb (EV_P_ ev_signal *sw, int revents)
806{ 1508{
807 int pid, status; 1509 int pid, status;
808 1510
… …
811 if (!WCONTINUED 1513 if (!WCONTINUED
812 || errno != EINVAL 1514 || errno != EINVAL
813 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED))) 1515 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
814 return; 1516 return;
815 1517
816 /* make sure we are called again until all childs have been reaped */ 1518 /* make sure we are called again until all children have been reaped */
817 /* we need to do it this way so that the callback gets called before we continue */ 1519 /* we need to do it this way so that the callback gets called before we continue */
818 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1520 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
819 1521
820 child_reap (EV_A_ sw, pid, pid, status); 1522 child_reap (EV_A_ pid, pid, status);
821 if (EV_PID_HASHSIZE > 1) 1523 if ((EV_PID_HASHSIZE) > 1)
822 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1524 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
823} 1525}
824 1526
825#endif 1527#endif
826 1528
827/*****************************************************************************/ 1529/*****************************************************************************/
828 1530
1531#if EV_USE_IOCP
1532# include "ev_iocp.c"
1533#endif
829#if EV_USE_PORT 1534#if EV_USE_PORT
830# include "ev_port.c" 1535# include "ev_port.c"
831#endif 1536#endif
832#if EV_USE_KQUEUE 1537#if EV_USE_KQUEUE
833# include "ev_kqueue.c" 1538# include "ev_kqueue.c"
… …
889 /* kqueue is borked on everything but netbsd apparently */ 1594 /* kqueue is borked on everything but netbsd apparently */
890 /* it usually doesn't work correctly on anything but sockets and pipes */ 1595 /* it usually doesn't work correctly on anything but sockets and pipes */
891 flags &= ~EVBACKEND_KQUEUE; 1596 flags &= ~EVBACKEND_KQUEUE;
892#endif 1597#endif
893#ifdef __APPLE__ 1598#ifdef __APPLE__
894 // flags &= ~EVBACKEND_KQUEUE; for documentation 1599 /* only select works correctly on that "unix-certified" platform */
895 flags &= ~EVBACKEND_POLL; 1600 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1601 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1602#endif
1603#ifdef __FreeBSD__
1604 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
896#endif 1605#endif
897 1606
898 return flags; 1607 return flags;
899} 1608}
900 1609
901unsigned int 1610unsigned int
902ev_embeddable_backends (void) 1611ev_embeddable_backends (void)
903{ 1612{
904 return EVBACKEND_EPOLL 1613 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
905 | EVBACKEND_KQUEUE 1614
906 | EVBACKEND_PORT; 1615 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1616 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1617 flags &= ~EVBACKEND_EPOLL;
1618
1619 return flags;
907} 1620}
908 1621
909unsigned int 1622unsigned int
910ev_backend (EV_P) 1623ev_backend (EV_P)
911{ 1624{
912 return backend; 1625 return backend;
913} 1626}
914 1627
1628#if EV_FEATURE_API
915unsigned int 1629unsigned int
916ev_loop_count (EV_P) 1630ev_iteration (EV_P)
917{ 1631{
918 return loop_count; 1632 return loop_count;
919} 1633}
920 1634
1635unsigned int
1636ev_depth (EV_P)
1637{
1638 return loop_depth;
1639}
1640
1641void
1642ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1643{
1644 io_blocktime = interval;
1645}
1646
1647void
1648ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1649{
1650 timeout_blocktime = interval;
1651}
1652
1653void
1654ev_set_userdata (EV_P_ void *data)
1655{
1656 userdata = data;
1657}
1658
1659void *
1660ev_userdata (EV_P)
1661{
1662 return userdata;
1663}
1664
1665void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1666{
1667 invoke_cb = invoke_pending_cb;
1668}
1669
1670void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1671{
1672 release_cb = release;
1673 acquire_cb = acquire;
1674}
1675#endif
1676
1677/* initialise a loop structure, must be zero-initialised */
921static void noinline 1678static void noinline
922loop_init (EV_P_ unsigned int flags) 1679loop_init (EV_P_ unsigned int flags)
923{ 1680{
924 if (!backend) 1681 if (!backend)
925 { 1682 {
1683 origflags = flags;
1684
1685#if EV_USE_REALTIME
1686 if (!have_realtime)
1687 {
1688 struct timespec ts;
1689
1690 if (!clock_gettime (CLOCK_REALTIME, &ts))
1691 have_realtime = 1;
1692 }
1693#endif
1694
926#if EV_USE_MONOTONIC 1695#if EV_USE_MONOTONIC
1696 if (!have_monotonic)
927 { 1697 {
928 struct timespec ts; 1698 struct timespec ts;
1699
929 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1700 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
930 have_monotonic = 1; 1701 have_monotonic = 1;
931 } 1702 }
932#endif 1703#endif
933
934 ev_rt_now = ev_time ();
935 mn_now = get_clock ();
936 now_floor = mn_now;
937 rtmn_diff = ev_rt_now - mn_now;
938 1704
939 /* pid check not overridable via env */ 1705 /* pid check not overridable via env */
940#ifndef _WIN32 1706#ifndef _WIN32
941 if (flags & EVFLAG_FORKCHECK) 1707 if (flags & EVFLAG_FORKCHECK)
942 curpid = getpid (); 1708 curpid = getpid ();
… …
945 if (!(flags & EVFLAG_NOENV) 1711 if (!(flags & EVFLAG_NOENV)
946 && !enable_secure () 1712 && !enable_secure ()
947 && getenv ("LIBEV_FLAGS")) 1713 && getenv ("LIBEV_FLAGS"))
948 flags = atoi (getenv ("LIBEV_FLAGS")); 1714 flags = atoi (getenv ("LIBEV_FLAGS"));
949 1715
950 if (!(flags & 0x0000ffffUL)) 1716 ev_rt_now = ev_time ();
1717 mn_now = get_clock ();
1718 now_floor = mn_now;
1719 rtmn_diff = ev_rt_now - mn_now;
1720#if EV_FEATURE_API
1721 invoke_cb = ev_invoke_pending;
1722#endif
1723
1724 io_blocktime = 0.;
1725 timeout_blocktime = 0.;
1726 backend = 0;
1727 backend_fd = -1;
1728 sig_pending = 0;
1729#if EV_ASYNC_ENABLE
1730 async_pending = 0;
1731#endif
1732#if EV_USE_INOTIFY
1733 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1734#endif
1735#if EV_USE_SIGNALFD
1736 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1737#endif
1738
1739 if (!(flags & EVBACKEND_MASK))
951 flags |= ev_recommended_backends (); 1740 flags |= ev_recommended_backends ();
952 1741
953 backend = 0;
954 backend_fd = -1;
955#if EV_USE_INOTIFY 1742#if EV_USE_IOCP
956 fs_fd = -2; 1743 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
957#endif 1744#endif
958
959#if EV_USE_PORT 1745#if EV_USE_PORT
960 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1746 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
961#endif 1747#endif
962#if EV_USE_KQUEUE 1748#if EV_USE_KQUEUE
963 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 1749 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
970#endif 1756#endif
971#if EV_USE_SELECT 1757#if EV_USE_SELECT
972 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1758 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
973#endif 1759#endif
974 1760
1761 ev_prepare_init (&pending_w, pendingcb);
1762
1763#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
975 ev_init (&sigev, sigcb); 1764 ev_init (&pipe_w, pipecb);
976 ev_set_priority (&sigev, EV_MAXPRI); 1765 ev_set_priority (&pipe_w, EV_MAXPRI);
1766#endif
977 } 1767 }
978} 1768}
979 1769
980static void noinline 1770/* free up a loop structure */
1771void
981loop_destroy (EV_P) 1772ev_loop_destroy (EV_P)
982{ 1773{
983 int i; 1774 int i;
1775
1776#if EV_MULTIPLICITY
1777 /* mimic free (0) */
1778 if (!EV_A)
1779 return;
1780#endif
1781
1782#if EV_CLEANUP_ENABLE
1783 /* queue cleanup watchers (and execute them) */
1784 if (expect_false (cleanupcnt))
1785 {
1786 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
1787 EV_INVOKE_PENDING;
1788 }
1789#endif
1790
1791#if EV_CHILD_ENABLE
1792 if (ev_is_active (&childev))
1793 {
1794 ev_ref (EV_A); /* child watcher */
1795 ev_signal_stop (EV_A_ &childev);
1796 }
1797#endif
1798
1799 if (ev_is_active (&pipe_w))
1800 {
1801 /*ev_ref (EV_A);*/
1802 /*ev_io_stop (EV_A_ &pipe_w);*/
1803
1804#if EV_USE_EVENTFD
1805 if (evfd >= 0)
1806 close (evfd);
1807#endif
1808
1809 if (evpipe [0] >= 0)
1810 {
1811 EV_WIN32_CLOSE_FD (evpipe [0]);
1812 EV_WIN32_CLOSE_FD (evpipe [1]);
1813 }
1814 }
1815
1816#if EV_USE_SIGNALFD
1817 if (ev_is_active (&sigfd_w))
1818 close (sigfd);
1819#endif
984 1820
985#if EV_USE_INOTIFY 1821#if EV_USE_INOTIFY
986 if (fs_fd >= 0) 1822 if (fs_fd >= 0)
987 close (fs_fd); 1823 close (fs_fd);
988#endif 1824#endif
989 1825
990 if (backend_fd >= 0) 1826 if (backend_fd >= 0)
991 close (backend_fd); 1827 close (backend_fd);
992 1828
1829#if EV_USE_IOCP
1830 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
1831#endif
993#if EV_USE_PORT 1832#if EV_USE_PORT
994 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 1833 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
995#endif 1834#endif
996#if EV_USE_KQUEUE 1835#if EV_USE_KQUEUE
997 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 1836 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1012#if EV_IDLE_ENABLE 1851#if EV_IDLE_ENABLE
1013 array_free (idle, [i]); 1852 array_free (idle, [i]);
1014#endif 1853#endif
1015 } 1854 }
1016 1855
1856 ev_free (anfds); anfds = 0; anfdmax = 0;
1857
1017 /* have to use the microsoft-never-gets-it-right macro */ 1858 /* have to use the microsoft-never-gets-it-right macro */
1859 array_free (rfeed, EMPTY);
1018 array_free (fdchange, EMPTY); 1860 array_free (fdchange, EMPTY);
1019 array_free (timer, EMPTY); 1861 array_free (timer, EMPTY);
1020#if EV_PERIODIC_ENABLE 1862#if EV_PERIODIC_ENABLE
1021 array_free (periodic, EMPTY); 1863 array_free (periodic, EMPTY);
1022#endif 1864#endif
1865#if EV_FORK_ENABLE
1866 array_free (fork, EMPTY);
1867#endif
1868#if EV_CLEANUP_ENABLE
1869 array_free (cleanup, EMPTY);
1870#endif
1023 array_free (prepare, EMPTY); 1871 array_free (prepare, EMPTY);
1024 array_free (check, EMPTY); 1872 array_free (check, EMPTY);
1873#if EV_ASYNC_ENABLE
1874 array_free (async, EMPTY);
1875#endif
1025 1876
1026 backend = 0; 1877 backend = 0;
1027}
1028 1878
1879#if EV_MULTIPLICITY
1880 if (ev_is_default_loop (EV_A))
1881#endif
1882 ev_default_loop_ptr = 0;
1883#if EV_MULTIPLICITY
1884 else
1885 ev_free (EV_A);
1886#endif
1887}
1888
1889#if EV_USE_INOTIFY
1029void inline_size infy_fork (EV_P); 1890inline_size void infy_fork (EV_P);
1891#endif
1030 1892
1031void inline_size 1893inline_size void
1032loop_fork (EV_P) 1894loop_fork (EV_P)
1033{ 1895{
1034#if EV_USE_PORT 1896#if EV_USE_PORT
1035 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1897 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1036#endif 1898#endif
… …
1042#endif 1904#endif
1043#if EV_USE_INOTIFY 1905#if EV_USE_INOTIFY
1044 infy_fork (EV_A); 1906 infy_fork (EV_A);
1045#endif 1907#endif
1046 1908
1047 if (ev_is_active (&sigev)) 1909 if (ev_is_active (&pipe_w))
1048 { 1910 {
1049 /* default loop */ 1911 /* this "locks" the handlers against writing to the pipe */
1912 /* while we modify the fd vars */
1913 sig_pending = 1;
1914#if EV_ASYNC_ENABLE
1915 async_pending = 1;
1916#endif
1050 1917
1051 ev_ref (EV_A); 1918 ev_ref (EV_A);
1052 ev_io_stop (EV_A_ &sigev); 1919 ev_io_stop (EV_A_ &pipe_w);
1053 close (sigpipe [0]);
1054 close (sigpipe [1]);
1055 1920
1056 while (pipe (sigpipe)) 1921#if EV_USE_EVENTFD
1057 syserr ("(libev) error creating pipe"); 1922 if (evfd >= 0)
1923 close (evfd);
1924#endif
1058 1925
1926 if (evpipe [0] >= 0)
1927 {
1928 EV_WIN32_CLOSE_FD (evpipe [0]);
1929 EV_WIN32_CLOSE_FD (evpipe [1]);
1930 }
1931
1932#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1059 siginit (EV_A); 1933 evpipe_init (EV_A);
1934 /* now iterate over everything, in case we missed something */
1935 pipecb (EV_A_ &pipe_w, EV_READ);
1936#endif
1060 } 1937 }
1061 1938
1062 postfork = 0; 1939 postfork = 0;
1063} 1940}
1941
1942#if EV_MULTIPLICITY
1943
1944struct ev_loop *
1945ev_loop_new (unsigned int flags)
1946{
1947 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1948
1949 memset (EV_A, 0, sizeof (struct ev_loop));
1950 loop_init (EV_A_ flags);
1951
1952 if (ev_backend (EV_A))
1953 return EV_A;
1954
1955 ev_free (EV_A);
1956 return 0;
1957}
1958
1959#endif /* multiplicity */
1960
1961#if EV_VERIFY
1962static void noinline
1963verify_watcher (EV_P_ W w)
1964{
1965 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1966
1967 if (w->pending)
1968 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1969}
1970
1971static void noinline
1972verify_heap (EV_P_ ANHE *heap, int N)
1973{
1974 int i;
1975
1976 for (i = HEAP0; i < N + HEAP0; ++i)
1977 {
1978 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1979 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1980 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1981
1982 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1983 }
1984}
1985
1986static void noinline
1987array_verify (EV_P_ W *ws, int cnt)
1988{
1989 while (cnt--)
1990 {
1991 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1992 verify_watcher (EV_A_ ws [cnt]);
1993 }
1994}
1995#endif
1996
1997#if EV_FEATURE_API
1998void
1999ev_verify (EV_P)
2000{
2001#if EV_VERIFY
2002 int i;
2003 WL w;
2004
2005 assert (activecnt >= -1);
2006
2007 assert (fdchangemax >= fdchangecnt);
2008 for (i = 0; i < fdchangecnt; ++i)
2009 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
2010
2011 assert (anfdmax >= 0);
2012 for (i = 0; i < anfdmax; ++i)
2013 for (w = anfds [i].head; w; w = w->next)
2014 {
2015 verify_watcher (EV_A_ (W)w);
2016 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
2017 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
2018 }
2019
2020 assert (timermax >= timercnt);
2021 verify_heap (EV_A_ timers, timercnt);
2022
2023#if EV_PERIODIC_ENABLE
2024 assert (periodicmax >= periodiccnt);
2025 verify_heap (EV_A_ periodics, periodiccnt);
2026#endif
2027
2028 for (i = NUMPRI; i--; )
2029 {
2030 assert (pendingmax [i] >= pendingcnt [i]);
2031#if EV_IDLE_ENABLE
2032 assert (idleall >= 0);
2033 assert (idlemax [i] >= idlecnt [i]);
2034 array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
2035#endif
2036 }
2037
2038#if EV_FORK_ENABLE
2039 assert (forkmax >= forkcnt);
2040 array_verify (EV_A_ (W *)forks, forkcnt);
2041#endif
2042
2043#if EV_CLEANUP_ENABLE
2044 assert (cleanupmax >= cleanupcnt);
2045 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2046#endif
2047
2048#if EV_ASYNC_ENABLE
2049 assert (asyncmax >= asynccnt);
2050 array_verify (EV_A_ (W *)asyncs, asynccnt);
2051#endif
2052
2053#if EV_PREPARE_ENABLE
2054 assert (preparemax >= preparecnt);
2055 array_verify (EV_A_ (W *)prepares, preparecnt);
2056#endif
2057
2058#if EV_CHECK_ENABLE
2059 assert (checkmax >= checkcnt);
2060 array_verify (EV_A_ (W *)checks, checkcnt);
2061#endif
2062
2063# if 0
2064#if EV_CHILD_ENABLE
2065 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
2066 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2067#endif
2068# endif
2069#endif
2070}
2071#endif
1064 2072
1065#if EV_MULTIPLICITY 2073#if EV_MULTIPLICITY
1066struct ev_loop * 2074struct ev_loop *
1067ev_loop_new (unsigned int flags)
1068{
1069 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1070
1071 memset (loop, 0, sizeof (struct ev_loop));
1072
1073 loop_init (EV_A_ flags);
1074
1075 if (ev_backend (EV_A))
1076 return loop;
1077
1078 return 0;
1079}
1080
1081void
1082ev_loop_destroy (EV_P)
1083{
1084 loop_destroy (EV_A);
1085 ev_free (loop);
1086}
1087
1088void
1089ev_loop_fork (EV_P)
1090{
1091 postfork = 1;
1092}
1093
1094#endif
1095
1096#if EV_MULTIPLICITY
1097struct ev_loop *
1098ev_default_loop_init (unsigned int flags)
1099#else 2075#else
1100int 2076int
2077#endif
1101ev_default_loop (unsigned int flags) 2078ev_default_loop (unsigned int flags)
1102#endif
1103{ 2079{
1104 if (sigpipe [0] == sigpipe [1])
1105 if (pipe (sigpipe))
1106 return 0;
1107
1108 if (!ev_default_loop_ptr) 2080 if (!ev_default_loop_ptr)
1109 { 2081 {
1110#if EV_MULTIPLICITY 2082#if EV_MULTIPLICITY
1111 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2083 EV_P = ev_default_loop_ptr = &default_loop_struct;
1112#else 2084#else
1113 ev_default_loop_ptr = 1; 2085 ev_default_loop_ptr = 1;
1114#endif 2086#endif
1115 2087
1116 loop_init (EV_A_ flags); 2088 loop_init (EV_A_ flags);
1117 2089
1118 if (ev_backend (EV_A)) 2090 if (ev_backend (EV_A))
1119 { 2091 {
1120 siginit (EV_A); 2092#if EV_CHILD_ENABLE
1121
1122#ifndef _WIN32
1123 ev_signal_init (&childev, childcb, SIGCHLD); 2093 ev_signal_init (&childev, childcb, SIGCHLD);
1124 ev_set_priority (&childev, EV_MAXPRI); 2094 ev_set_priority (&childev, EV_MAXPRI);
1125 ev_signal_start (EV_A_ &childev); 2095 ev_signal_start (EV_A_ &childev);
1126 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2096 ev_unref (EV_A); /* child watcher should not keep loop alive */
1127#endif 2097#endif
… …
1132 2102
1133 return ev_default_loop_ptr; 2103 return ev_default_loop_ptr;
1134} 2104}
1135 2105
1136void 2106void
1137ev_default_destroy (void) 2107ev_loop_fork (EV_P)
1138{ 2108{
1139#if EV_MULTIPLICITY 2109 postfork = 1; /* must be in line with ev_default_fork */
1140 struct ev_loop *loop = ev_default_loop_ptr;
1141#endif
1142
1143#ifndef _WIN32
1144 ev_ref (EV_A); /* child watcher */
1145 ev_signal_stop (EV_A_ &childev);
1146#endif
1147
1148 ev_ref (EV_A); /* signal watcher */
1149 ev_io_stop (EV_A_ &sigev);
1150
1151 close (sigpipe [0]); sigpipe [0] = 0;
1152 close (sigpipe [1]); sigpipe [1] = 0;
1153
1154 loop_destroy (EV_A);
1155}
1156
1157void
1158ev_default_fork (void)
1159{
1160#if EV_MULTIPLICITY
1161 struct ev_loop *loop = ev_default_loop_ptr;
1162#endif
1163
1164 if (backend)
1165 postfork = 1;
1166} 2110}
1167 2111
1168/*****************************************************************************/ 2112/*****************************************************************************/
1169 2113
1170void 2114void
1171ev_invoke (EV_P_ void *w, int revents) 2115ev_invoke (EV_P_ void *w, int revents)
1172{ 2116{
1173 EV_CB_INVOKE ((W)w, revents); 2117 EV_CB_INVOKE ((W)w, revents);
1174} 2118}
1175 2119
1176void inline_speed 2120unsigned int
1177call_pending (EV_P) 2121ev_pending_count (EV_P)
2122{
2123 int pri;
2124 unsigned int count = 0;
2125
2126 for (pri = NUMPRI; pri--; )
2127 count += pendingcnt [pri];
2128
2129 return count;
2130}
2131
2132void noinline
2133ev_invoke_pending (EV_P)
1178{ 2134{
1179 int pri; 2135 int pri;
1180 2136
1181 for (pri = NUMPRI; pri--; ) 2137 for (pri = NUMPRI; pri--; )
1182 while (pendingcnt [pri]) 2138 while (pendingcnt [pri])
1183 { 2139 {
1184 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2140 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1185 2141
1186 if (expect_true (p->w))
1187 {
1188 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1189
1190 p->w->pending = 0; 2142 p->w->pending = 0;
1191 EV_CB_INVOKE (p->w, p->events); 2143 EV_CB_INVOKE (p->w, p->events);
1192 } 2144 EV_FREQUENT_CHECK;
1193 } 2145 }
1194} 2146}
1195 2147
1196void inline_size
1197timers_reify (EV_P)
1198{
1199 while (timercnt && ((WT)timers [0])->at <= mn_now)
1200 {
1201 ev_timer *w = timers [0];
1202
1203 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1204
1205 /* first reschedule or stop timer */
1206 if (w->repeat)
1207 {
1208 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1209
1210 ((WT)w)->at += w->repeat;
1211 if (((WT)w)->at < mn_now)
1212 ((WT)w)->at = mn_now;
1213
1214 downheap ((WT *)timers, timercnt, 0);
1215 }
1216 else
1217 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1218
1219 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1220 }
1221}
1222
1223#if EV_PERIODIC_ENABLE
1224void inline_size
1225periodics_reify (EV_P)
1226{
1227 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1228 {
1229 ev_periodic *w = periodics [0];
1230
1231 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1232
1233 /* first reschedule or stop timer */
1234 if (w->reschedule_cb)
1235 {
1236 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
1237 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1238 downheap ((WT *)periodics, periodiccnt, 0);
1239 }
1240 else if (w->interval)
1241 {
1242 ((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
1243 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1244 downheap ((WT *)periodics, periodiccnt, 0);
1245 }
1246 else
1247 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1248
1249 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1250 }
1251}
1252
1253static void noinline
1254periodics_reschedule (EV_P)
1255{
1256 int i;
1257
1258 /* adjust periodics after time jump */
1259 for (i = 0; i < periodiccnt; ++i)
1260 {
1261 ev_periodic *w = periodics [i];
1262
1263 if (w->reschedule_cb)
1264 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1265 else if (w->interval)
1266 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
1267 }
1268
1269 /* now rebuild the heap */
1270 for (i = periodiccnt >> 1; i--; )
1271 downheap ((WT *)periodics, periodiccnt, i);
1272}
1273#endif
1274
1275#if EV_IDLE_ENABLE 2148#if EV_IDLE_ENABLE
1276void inline_size 2149/* make idle watchers pending. this handles the "call-idle */
2150/* only when higher priorities are idle" logic */
2151inline_size void
1277idle_reify (EV_P) 2152idle_reify (EV_P)
1278{ 2153{
1279 if (expect_false (idleall)) 2154 if (expect_false (idleall))
1280 { 2155 {
1281 int pri; 2156 int pri;
… …
1293 } 2168 }
1294 } 2169 }
1295} 2170}
1296#endif 2171#endif
1297 2172
1298int inline_size 2173/* make timers pending */
1299time_update_monotonic (EV_P) 2174inline_size void
2175timers_reify (EV_P)
1300{ 2176{
2177 EV_FREQUENT_CHECK;
2178
2179 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
2180 {
2181 do
2182 {
2183 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
2184
2185 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
2186
2187 /* first reschedule or stop timer */
2188 if (w->repeat)
2189 {
2190 ev_at (w) += w->repeat;
2191 if (ev_at (w) < mn_now)
2192 ev_at (w) = mn_now;
2193
2194 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
2195
2196 ANHE_at_cache (timers [HEAP0]);
2197 downheap (timers, timercnt, HEAP0);
2198 }
2199 else
2200 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
2201
2202 EV_FREQUENT_CHECK;
2203 feed_reverse (EV_A_ (W)w);
2204 }
2205 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
2206
2207 feed_reverse_done (EV_A_ EV_TIMER);
2208 }
2209}
2210
2211#if EV_PERIODIC_ENABLE
2212
2213inline_speed void
2214periodic_recalc (EV_P_ ev_periodic *w)
2215{
2216 /* TODO: use slow but potentially more correct incremental algo, */
2217 /* also do not rely on ceil */
2218 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2219}
2220
2221/* make periodics pending */
2222inline_size void
2223periodics_reify (EV_P)
2224{
2225 EV_FREQUENT_CHECK;
2226
2227 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2228 {
2229 int feed_count = 0;
2230
2231 do
2232 {
2233 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2234
2235 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
2236
2237 /* first reschedule or stop timer */
2238 if (w->reschedule_cb)
2239 {
2240 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2241
2242 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
2243
2244 ANHE_at_cache (periodics [HEAP0]);
2245 downheap (periodics, periodiccnt, HEAP0);
2246 }
2247 else if (w->interval)
2248 {
2249 periodic_recalc (EV_A_ w);
2250
2251 /* if next trigger time is not sufficiently in the future, put it there */
2252 /* this might happen because of floating point inexactness */
2253 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2254 {
2255 ev_at (w) += w->interval;
2256
2257 /* if interval is unreasonably low we might still have a time in the past */
2258 /* so correct this. this will make the periodic very inexact, but the user */
2259 /* has effectively asked to get triggered more often than possible */
2260 if (ev_at (w) < ev_rt_now)
2261 ev_at (w) = ev_rt_now;
2262 }
2263
2264 ANHE_at_cache (periodics [HEAP0]);
2265 downheap (periodics, periodiccnt, HEAP0);
2266 }
2267 else
2268 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
2269
2270 EV_FREQUENT_CHECK;
2271 feed_reverse (EV_A_ (W)w);
2272 }
2273 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
2274
2275 feed_reverse_done (EV_A_ EV_PERIODIC);
2276 }
2277}
2278
2279/* simply recalculate all periodics */
2280/* TODO: maybe ensure that at least one event happens when jumping forward? */
2281static void noinline
2282periodics_reschedule (EV_P)
2283{
2284 int i;
2285
2286 /* adjust periodics after time jump */
2287 for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
2288 {
2289 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2290
2291 if (w->reschedule_cb)
2292 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2293 else if (w->interval)
2294 periodic_recalc (EV_A_ w);
2295
2296 ANHE_at_cache (periodics [i]);
2297 }
2298
2299 reheap (periodics, periodiccnt);
2300}
2301#endif
2302
2303/* adjust all timers by a given offset */
2304static void noinline
2305timers_reschedule (EV_P_ ev_tstamp adjust)
2306{
2307 int i;
2308
2309 for (i = 0; i < timercnt; ++i)
2310 {
2311 ANHE *he = timers + i + HEAP0;
2312 ANHE_w (*he)->at += adjust;
2313 ANHE_at_cache (*he);
2314 }
2315}
2316
2317/* fetch new monotonic and realtime times from the kernel */
2318/* also detect if there was a timejump, and act accordingly */
2319inline_speed void
2320time_update (EV_P_ ev_tstamp max_block)
2321{
2322#if EV_USE_MONOTONIC
2323 if (expect_true (have_monotonic))
2324 {
2325 int i;
2326 ev_tstamp odiff = rtmn_diff;
2327
1301 mn_now = get_clock (); 2328 mn_now = get_clock ();
1302 2329
2330 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
2331 /* interpolate in the meantime */
1303 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 2332 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1304 { 2333 {
1305 ev_rt_now = rtmn_diff + mn_now; 2334 ev_rt_now = rtmn_diff + mn_now;
1306 return 0; 2335 return;
1307 } 2336 }
1308 else 2337
1309 {
1310 now_floor = mn_now; 2338 now_floor = mn_now;
1311 ev_rt_now = ev_time (); 2339 ev_rt_now = ev_time ();
1312 return 1;
1313 }
1314}
1315 2340
1316void inline_size 2341 /* loop a few times, before making important decisions.
1317time_update (EV_P) 2342 * on the choice of "4": one iteration isn't enough,
1318{ 2343 * in case we get preempted during the calls to
1319 int i; 2344 * ev_time and get_clock. a second call is almost guaranteed
1320 2345 * to succeed in that case, though. and looping a few more times
1321#if EV_USE_MONOTONIC 2346 * doesn't hurt either as we only do this on time-jumps or
1322 if (expect_true (have_monotonic)) 2347 * in the unlikely event of having been preempted here.
1323 { 2348 */
1324 if (time_update_monotonic (EV_A)) 2349 for (i = 4; --i; )
1325 { 2350 {
1326 ev_tstamp odiff = rtmn_diff;
1327
1328 /* loop a few times, before making important decisions.
1329 * on the choice of "4": one iteration isn't enough,
1330 * in case we get preempted during the calls to
1331 * ev_time and get_clock. a second call is almost guaranteed
1332 * to succeed in that case, though. and looping a few more times
1333 * doesn't hurt either as we only do this on time-jumps or
1334 * in the unlikely event of having been preempted here.
1335 */
1336 for (i = 4; --i; )
1337 {
1338 rtmn_diff = ev_rt_now - mn_now; 2351 rtmn_diff = ev_rt_now - mn_now;
1339 2352
1340 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 2353 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP))
1341 return; /* all is well */ 2354 return; /* all is well */
1342 2355
1343 ev_rt_now = ev_time (); 2356 ev_rt_now = ev_time ();
1344 mn_now = get_clock (); 2357 mn_now = get_clock ();
1345 now_floor = mn_now; 2358 now_floor = mn_now;
1346 } 2359 }
1347 2360
2361 /* no timer adjustment, as the monotonic clock doesn't jump */
2362 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1348# if EV_PERIODIC_ENABLE 2363# if EV_PERIODIC_ENABLE
1349 periodics_reschedule (EV_A); 2364 periodics_reschedule (EV_A);
1350# endif 2365# endif
1351 /* no timer adjustment, as the monotonic clock doesn't jump */
1352 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1353 }
1354 } 2366 }
1355 else 2367 else
1356#endif 2368#endif
1357 { 2369 {
1358 ev_rt_now = ev_time (); 2370 ev_rt_now = ev_time ();
1359 2371
1360 if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) 2372 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1361 { 2373 {
2374 /* adjust timers. this is easy, as the offset is the same for all of them */
2375 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1362#if EV_PERIODIC_ENABLE 2376#if EV_PERIODIC_ENABLE
1363 periodics_reschedule (EV_A); 2377 periodics_reschedule (EV_A);
1364#endif 2378#endif
1365
1366 /* adjust timers. this is easy, as the offset is the same for all of them */
1367 for (i = 0; i < timercnt; ++i)
1368 ((WT)timers [i])->at += ev_rt_now - mn_now;
1369 } 2379 }
1370 2380
1371 mn_now = ev_rt_now; 2381 mn_now = ev_rt_now;
1372 } 2382 }
1373} 2383}
1374 2384
1375void 2385void
1376ev_ref (EV_P)
1377{
1378 ++activecnt;
1379}
1380
1381void
1382ev_unref (EV_P)
1383{
1384 --activecnt;
1385}
1386
1387static int loop_done;
1388
1389void
1390ev_loop (EV_P_ int flags) 2386ev_run (EV_P_ int flags)
1391{ 2387{
1392 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) 2388#if EV_FEATURE_API
1393 ? EVUNLOOP_ONE 2389 ++loop_depth;
1394 : EVUNLOOP_CANCEL; 2390#endif
1395 2391
2392 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2393
2394 loop_done = EVBREAK_CANCEL;
2395
1396 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2396 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1397 2397
1398 do 2398 do
1399 { 2399 {
2400#if EV_VERIFY >= 2
2401 ev_verify (EV_A);
2402#endif
2403
1400#ifndef _WIN32 2404#ifndef _WIN32
1401 if (expect_false (curpid)) /* penalise the forking check even more */ 2405 if (expect_false (curpid)) /* penalise the forking check even more */
1402 if (expect_false (getpid () != curpid)) 2406 if (expect_false (getpid () != curpid))
1403 { 2407 {
1404 curpid = getpid (); 2408 curpid = getpid ();
… …
1410 /* we might have forked, so queue fork handlers */ 2414 /* we might have forked, so queue fork handlers */
1411 if (expect_false (postfork)) 2415 if (expect_false (postfork))
1412 if (forkcnt) 2416 if (forkcnt)
1413 { 2417 {
1414 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2418 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1415 call_pending (EV_A); 2419 EV_INVOKE_PENDING;
1416 } 2420 }
1417#endif 2421#endif
1418 2422
2423#if EV_PREPARE_ENABLE
1419 /* queue check watchers (and execute them) */ 2424 /* queue prepare watchers (and execute them) */
1420 if (expect_false (preparecnt)) 2425 if (expect_false (preparecnt))
1421 { 2426 {
1422 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2427 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1423 call_pending (EV_A); 2428 EV_INVOKE_PENDING;
1424 } 2429 }
2430#endif
1425 2431
1426 if (expect_false (!activecnt)) 2432 if (expect_false (loop_done))
1427 break; 2433 break;
1428 2434
1429 /* we might have forked, so reify kernel state if necessary */ 2435 /* we might have forked, so reify kernel state if necessary */
1430 if (expect_false (postfork)) 2436 if (expect_false (postfork))
1431 loop_fork (EV_A); 2437 loop_fork (EV_A);
… …
1433 /* update fd-related kernel structures */ 2439 /* update fd-related kernel structures */
1434 fd_reify (EV_A); 2440 fd_reify (EV_A);
1435 2441
1436 /* calculate blocking time */ 2442 /* calculate blocking time */
1437 { 2443 {
1438 ev_tstamp block; 2444 ev_tstamp waittime = 0.;
2445 ev_tstamp sleeptime = 0.;
1439 2446
2447 /* remember old timestamp for io_blocktime calculation */
2448 ev_tstamp prev_mn_now = mn_now;
2449
2450 /* update time to cancel out callback processing overhead */
2451 time_update (EV_A_ 1e100);
2452
1440 if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt)) 2453 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt)))
1441 block = 0.; /* do not block at all */
1442 else
1443 { 2454 {
1444 /* update time to cancel out callback processing overhead */
1445#if EV_USE_MONOTONIC
1446 if (expect_true (have_monotonic))
1447 time_update_monotonic (EV_A);
1448 else
1449#endif
1450 {
1451 ev_rt_now = ev_time ();
1452 mn_now = ev_rt_now;
1453 }
1454
1455 block = MAX_BLOCKTIME; 2455 waittime = MAX_BLOCKTIME;
1456 2456
1457 if (timercnt) 2457 if (timercnt)
1458 { 2458 {
1459 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge; 2459 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
1460 if (block > to) block = to; 2460 if (waittime > to) waittime = to;
1461 } 2461 }
1462 2462
1463#if EV_PERIODIC_ENABLE 2463#if EV_PERIODIC_ENABLE
1464 if (periodiccnt) 2464 if (periodiccnt)
1465 { 2465 {
1466 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge; 2466 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1467 if (block > to) block = to; 2467 if (waittime > to) waittime = to;
1468 } 2468 }
1469#endif 2469#endif
1470 2470
2471 /* don't let timeouts decrease the waittime below timeout_blocktime */
2472 if (expect_false (waittime < timeout_blocktime))
2473 waittime = timeout_blocktime;
2474
2475 /* extra check because io_blocktime is commonly 0 */
1471 if (expect_false (block < 0.)) block = 0.; 2476 if (expect_false (io_blocktime))
2477 {
2478 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2479
2480 if (sleeptime > waittime - backend_fudge)
2481 sleeptime = waittime - backend_fudge;
2482
2483 if (expect_true (sleeptime > 0.))
2484 {
2485 ev_sleep (sleeptime);
2486 waittime -= sleeptime;
2487 }
2488 }
1472 } 2489 }
1473 2490
2491#if EV_FEATURE_API
1474 ++loop_count; 2492 ++loop_count;
2493#endif
2494 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
1475 backend_poll (EV_A_ block); 2495 backend_poll (EV_A_ waittime);
2496 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2497
2498 /* update ev_rt_now, do magic */
2499 time_update (EV_A_ waittime + sleeptime);
1476 } 2500 }
1477
1478 /* update ev_rt_now, do magic */
1479 time_update (EV_A);
1480 2501
1481 /* queue pending timers and reschedule them */ 2502 /* queue pending timers and reschedule them */
1482 timers_reify (EV_A); /* relative timers called last */ 2503 timers_reify (EV_A); /* relative timers called last */
1483#if EV_PERIODIC_ENABLE 2504#if EV_PERIODIC_ENABLE
1484 periodics_reify (EV_A); /* absolute timers called first */ 2505 periodics_reify (EV_A); /* absolute timers called first */
… …
1487#if EV_IDLE_ENABLE 2508#if EV_IDLE_ENABLE
1488 /* queue idle watchers unless other events are pending */ 2509 /* queue idle watchers unless other events are pending */
1489 idle_reify (EV_A); 2510 idle_reify (EV_A);
1490#endif 2511#endif
1491 2512
2513#if EV_CHECK_ENABLE
1492 /* queue check watchers, to be executed first */ 2514 /* queue check watchers, to be executed first */
1493 if (expect_false (checkcnt)) 2515 if (expect_false (checkcnt))
1494 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2516 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2517#endif
1495 2518
1496 call_pending (EV_A); 2519 EV_INVOKE_PENDING;
1497
1498 } 2520 }
1499 while (expect_true (activecnt && !loop_done)); 2521 while (expect_true (
2522 activecnt
2523 && !loop_done
2524 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2525 ));
1500 2526
1501 if (loop_done == EVUNLOOP_ONE) 2527 if (loop_done == EVBREAK_ONE)
1502 loop_done = EVUNLOOP_CANCEL; 2528 loop_done = EVBREAK_CANCEL;
1503}
1504 2529
2530#if EV_FEATURE_API
2531 --loop_depth;
2532#endif
2533}
2534
1505void 2535void
1506ev_unloop (EV_P_ int how) 2536ev_break (EV_P_ int how)
1507{ 2537{
1508 loop_done = how; 2538 loop_done = how;
1509} 2539}
1510 2540
2541void
2542ev_ref (EV_P)
2543{
2544 ++activecnt;
2545}
2546
2547void
2548ev_unref (EV_P)
2549{
2550 --activecnt;
2551}
2552
2553void
2554ev_now_update (EV_P)
2555{
2556 time_update (EV_A_ 1e100);
2557}
2558
2559void
2560ev_suspend (EV_P)
2561{
2562 ev_now_update (EV_A);
2563}
2564
2565void
2566ev_resume (EV_P)
2567{
2568 ev_tstamp mn_prev = mn_now;
2569
2570 ev_now_update (EV_A);
2571 timers_reschedule (EV_A_ mn_now - mn_prev);
2572#if EV_PERIODIC_ENABLE
2573 /* TODO: really do this? */
2574 periodics_reschedule (EV_A);
2575#endif
2576}
2577
1511/*****************************************************************************/ 2578/*****************************************************************************/
2579/* singly-linked list management, used when the expected list length is short */
1512 2580
1513void inline_size 2581inline_size void
1514wlist_add (WL *head, WL elem) 2582wlist_add (WL *head, WL elem)
1515{ 2583{
1516 elem->next = *head; 2584 elem->next = *head;
1517 *head = elem; 2585 *head = elem;
1518} 2586}
1519 2587
1520void inline_size 2588inline_size void
1521wlist_del (WL *head, WL elem) 2589wlist_del (WL *head, WL elem)
1522{ 2590{
1523 while (*head) 2591 while (*head)
1524 { 2592 {
1525 if (*head == elem) 2593 if (expect_true (*head == elem))
1526 { 2594 {
1527 *head = elem->next; 2595 *head = elem->next;
1528 return; 2596 break;
1529 } 2597 }
1530 2598
1531 head = &(*head)->next; 2599 head = &(*head)->next;
1532 } 2600 }
1533} 2601}
1534 2602
1535void inline_speed 2603/* internal, faster, version of ev_clear_pending */
2604inline_speed void
1536clear_pending (EV_P_ W w) 2605clear_pending (EV_P_ W w)
1537{ 2606{
1538 if (w->pending) 2607 if (w->pending)
1539 { 2608 {
1540 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2609 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
1541 w->pending = 0; 2610 w->pending = 0;
1542 } 2611 }
1543} 2612}
1544 2613
1545int 2614int
1546ev_clear_pending (EV_P_ void *w) 2615ev_clear_pending (EV_P_ void *w)
1547{ 2616{
1548 W w_ = (W)w; 2617 W w_ = (W)w;
1549 int pending = w_->pending; 2618 int pending = w_->pending;
1550 2619
1551 if (!pending) 2620 if (expect_true (pending))
2621 {
2622 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2623 p->w = (W)&pending_w;
2624 w_->pending = 0;
2625 return p->events;
2626 }
2627 else
1552 return 0; 2628 return 0;
1553
1554 w_->pending = 0;
1555 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
1556 p->w = 0;
1557
1558 return p->events;
1559} 2629}
1560 2630
1561void inline_size 2631inline_size void
1562pri_adjust (EV_P_ W w) 2632pri_adjust (EV_P_ W w)
1563{ 2633{
1564 int pri = w->priority; 2634 int pri = ev_priority (w);
1565 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2635 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1566 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2636 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1567 w->priority = pri; 2637 ev_set_priority (w, pri);
1568} 2638}
1569 2639
1570void inline_speed 2640inline_speed void
1571ev_start (EV_P_ W w, int active) 2641ev_start (EV_P_ W w, int active)
1572{ 2642{
1573 pri_adjust (EV_A_ w); 2643 pri_adjust (EV_A_ w);
1574 w->active = active; 2644 w->active = active;
1575 ev_ref (EV_A); 2645 ev_ref (EV_A);
1576} 2646}
1577 2647
1578void inline_size 2648inline_size void
1579ev_stop (EV_P_ W w) 2649ev_stop (EV_P_ W w)
1580{ 2650{
1581 ev_unref (EV_A); 2651 ev_unref (EV_A);
1582 w->active = 0; 2652 w->active = 0;
1583} 2653}
1584 2654
1585/*****************************************************************************/ 2655/*****************************************************************************/
1586 2656
1587void 2657void noinline
1588ev_io_start (EV_P_ ev_io *w) 2658ev_io_start (EV_P_ ev_io *w)
1589{ 2659{
1590 int fd = w->fd; 2660 int fd = w->fd;
1591 2661
1592 if (expect_false (ev_is_active (w))) 2662 if (expect_false (ev_is_active (w)))
1593 return; 2663 return;
1594 2664
1595 assert (("ev_io_start called with negative fd", fd >= 0)); 2665 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2666 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2667
2668 EV_FREQUENT_CHECK;
1596 2669
1597 ev_start (EV_A_ (W)w, 1); 2670 ev_start (EV_A_ (W)w, 1);
1598 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2671 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
1599 wlist_add ((WL *)&anfds[fd].head, (WL)w); 2672 wlist_add (&anfds[fd].head, (WL)w);
1600 2673
1601 fd_change (EV_A_ fd); 2674 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
1602} 2675 w->events &= ~EV__IOFDSET;
1603 2676
1604void 2677 EV_FREQUENT_CHECK;
2678}
2679
2680void noinline
1605ev_io_stop (EV_P_ ev_io *w) 2681ev_io_stop (EV_P_ ev_io *w)
1606{ 2682{
1607 clear_pending (EV_A_ (W)w); 2683 clear_pending (EV_A_ (W)w);
1608 if (expect_false (!ev_is_active (w))) 2684 if (expect_false (!ev_is_active (w)))
1609 return; 2685 return;
1610 2686
1611 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 2687 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1612 2688
2689 EV_FREQUENT_CHECK;
2690
1613 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 2691 wlist_del (&anfds[w->fd].head, (WL)w);
1614 ev_stop (EV_A_ (W)w); 2692 ev_stop (EV_A_ (W)w);
1615 2693
1616 fd_change (EV_A_ w->fd); 2694 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
1617}
1618 2695
1619void 2696 EV_FREQUENT_CHECK;
2697}
2698
2699void noinline
1620ev_timer_start (EV_P_ ev_timer *w) 2700ev_timer_start (EV_P_ ev_timer *w)
1621{ 2701{
1622 if (expect_false (ev_is_active (w))) 2702 if (expect_false (ev_is_active (w)))
1623 return; 2703 return;
1624 2704
1625 ((WT)w)->at += mn_now; 2705 ev_at (w) += mn_now;
1626 2706
1627 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2707 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1628 2708
2709 EV_FREQUENT_CHECK;
2710
2711 ++timercnt;
1629 ev_start (EV_A_ (W)w, ++timercnt); 2712 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
1630 array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2); 2713 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1631 timers [timercnt - 1] = w; 2714 ANHE_w (timers [ev_active (w)]) = (WT)w;
1632 upheap ((WT *)timers, timercnt - 1); 2715 ANHE_at_cache (timers [ev_active (w)]);
2716 upheap (timers, ev_active (w));
1633 2717
2718 EV_FREQUENT_CHECK;
2719
1634 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/ 2720 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
1635} 2721}
1636 2722
1637void 2723void noinline
1638ev_timer_stop (EV_P_ ev_timer *w) 2724ev_timer_stop (EV_P_ ev_timer *w)
1639{ 2725{
1640 clear_pending (EV_A_ (W)w); 2726 clear_pending (EV_A_ (W)w);
1641 if (expect_false (!ev_is_active (w))) 2727 if (expect_false (!ev_is_active (w)))
1642 return; 2728 return;
1643 2729
1644 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 2730 EV_FREQUENT_CHECK;
1645 2731
1646 { 2732 {
1647 int active = ((W)w)->active; 2733 int active = ev_active (w);
1648 2734
2735 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2736
2737 --timercnt;
2738
1649 if (expect_true (--active < --timercnt)) 2739 if (expect_true (active < timercnt + HEAP0))
1650 { 2740 {
1651 timers [active] = timers [timercnt]; 2741 timers [active] = timers [timercnt + HEAP0];
1652 adjustheap ((WT *)timers, timercnt, active); 2742 adjustheap (timers, timercnt, active);
1653 } 2743 }
1654 } 2744 }
1655 2745
1656 ((WT)w)->at -= mn_now; 2746 ev_at (w) -= mn_now;
1657 2747
1658 ev_stop (EV_A_ (W)w); 2748 ev_stop (EV_A_ (W)w);
1659}
1660 2749
1661void 2750 EV_FREQUENT_CHECK;
2751}
2752
2753void noinline
1662ev_timer_again (EV_P_ ev_timer *w) 2754ev_timer_again (EV_P_ ev_timer *w)
1663{ 2755{
2756 EV_FREQUENT_CHECK;
2757
1664 if (ev_is_active (w)) 2758 if (ev_is_active (w))
1665 { 2759 {
1666 if (w->repeat) 2760 if (w->repeat)
1667 { 2761 {
1668 ((WT)w)->at = mn_now + w->repeat; 2762 ev_at (w) = mn_now + w->repeat;
2763 ANHE_at_cache (timers [ev_active (w)]);
1669 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); 2764 adjustheap (timers, timercnt, ev_active (w));
1670 } 2765 }
1671 else 2766 else
1672 ev_timer_stop (EV_A_ w); 2767 ev_timer_stop (EV_A_ w);
1673 } 2768 }
1674 else if (w->repeat) 2769 else if (w->repeat)
1675 { 2770 {
1676 w->at = w->repeat; 2771 ev_at (w) = w->repeat;
1677 ev_timer_start (EV_A_ w); 2772 ev_timer_start (EV_A_ w);
1678 } 2773 }
2774
2775 EV_FREQUENT_CHECK;
2776}
2777
2778ev_tstamp
2779ev_timer_remaining (EV_P_ ev_timer *w)
2780{
2781 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
1679} 2782}
1680 2783
1681#if EV_PERIODIC_ENABLE 2784#if EV_PERIODIC_ENABLE
1682void 2785void noinline
1683ev_periodic_start (EV_P_ ev_periodic *w) 2786ev_periodic_start (EV_P_ ev_periodic *w)
1684{ 2787{
1685 if (expect_false (ev_is_active (w))) 2788 if (expect_false (ev_is_active (w)))
1686 return; 2789 return;
1687 2790
1688 if (w->reschedule_cb) 2791 if (w->reschedule_cb)
1689 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 2792 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1690 else if (w->interval) 2793 else if (w->interval)
1691 { 2794 {
1692 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2795 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
1693 /* this formula differs from the one in periodic_reify because we do not always round up */ 2796 periodic_recalc (EV_A_ w);
1694 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
1695 } 2797 }
2798 else
2799 ev_at (w) = w->offset;
1696 2800
2801 EV_FREQUENT_CHECK;
2802
2803 ++periodiccnt;
1697 ev_start (EV_A_ (W)w, ++periodiccnt); 2804 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
1698 array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2); 2805 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
1699 periodics [periodiccnt - 1] = w; 2806 ANHE_w (periodics [ev_active (w)]) = (WT)w;
1700 upheap ((WT *)periodics, periodiccnt - 1); 2807 ANHE_at_cache (periodics [ev_active (w)]);
2808 upheap (periodics, ev_active (w));
1701 2809
2810 EV_FREQUENT_CHECK;
2811
1702 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/ 2812 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
1703} 2813}
1704 2814
1705void 2815void noinline
1706ev_periodic_stop (EV_P_ ev_periodic *w) 2816ev_periodic_stop (EV_P_ ev_periodic *w)
1707{ 2817{
1708 clear_pending (EV_A_ (W)w); 2818 clear_pending (EV_A_ (W)w);
1709 if (expect_false (!ev_is_active (w))) 2819 if (expect_false (!ev_is_active (w)))
1710 return; 2820 return;
1711 2821
1712 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 2822 EV_FREQUENT_CHECK;
1713 2823
1714 { 2824 {
1715 int active = ((W)w)->active; 2825 int active = ev_active (w);
1716 2826
2827 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2828
2829 --periodiccnt;
2830
1717 if (expect_true (--active < --periodiccnt)) 2831 if (expect_true (active < periodiccnt + HEAP0))
1718 { 2832 {
1719 periodics [active] = periodics [periodiccnt]; 2833 periodics [active] = periodics [periodiccnt + HEAP0];
1720 adjustheap ((WT *)periodics, periodiccnt, active); 2834 adjustheap (periodics, periodiccnt, active);
1721 } 2835 }
1722 } 2836 }
1723 2837
1724 ev_stop (EV_A_ (W)w); 2838 ev_stop (EV_A_ (W)w);
1725}
1726 2839
1727void 2840 EV_FREQUENT_CHECK;
2841}
2842
2843void noinline
1728ev_periodic_again (EV_P_ ev_periodic *w) 2844ev_periodic_again (EV_P_ ev_periodic *w)
1729{ 2845{
1730 /* TODO: use adjustheap and recalculation */ 2846 /* TODO: use adjustheap and recalculation */
1731 ev_periodic_stop (EV_A_ w); 2847 ev_periodic_stop (EV_A_ w);
1732 ev_periodic_start (EV_A_ w); 2848 ev_periodic_start (EV_A_ w);
… …
1735 2851
1736#ifndef SA_RESTART 2852#ifndef SA_RESTART
1737# define SA_RESTART 0 2853# define SA_RESTART 0
1738#endif 2854#endif
1739 2855
1740void 2856#if EV_SIGNAL_ENABLE
2857
2858void noinline
1741ev_signal_start (EV_P_ ev_signal *w) 2859ev_signal_start (EV_P_ ev_signal *w)
1742{ 2860{
1743#if EV_MULTIPLICITY
1744 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1745#endif
1746 if (expect_false (ev_is_active (w))) 2861 if (expect_false (ev_is_active (w)))
1747 return; 2862 return;
1748 2863
1749 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 2864 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2865
2866#if EV_MULTIPLICITY
2867 assert (("libev: a signal must not be attached to two different loops",
2868 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2869
2870 signals [w->signum - 1].loop = EV_A;
2871#endif
2872
2873 EV_FREQUENT_CHECK;
2874
2875#if EV_USE_SIGNALFD
2876 if (sigfd == -2)
2877 {
2878 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2879 if (sigfd < 0 && errno == EINVAL)
2880 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2881
2882 if (sigfd >= 0)
2883 {
2884 fd_intern (sigfd); /* doing it twice will not hurt */
2885
2886 sigemptyset (&sigfd_set);
2887
2888 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
2889 ev_set_priority (&sigfd_w, EV_MAXPRI);
2890 ev_io_start (EV_A_ &sigfd_w);
2891 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
2892 }
2893 }
2894
2895 if (sigfd >= 0)
2896 {
2897 /* TODO: check .head */
2898 sigaddset (&sigfd_set, w->signum);
2899 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
2900
2901 signalfd (sigfd, &sigfd_set, 0);
2902 }
2903#endif
1750 2904
1751 ev_start (EV_A_ (W)w, 1); 2905 ev_start (EV_A_ (W)w, 1);
1752 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1753 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 2906 wlist_add (&signals [w->signum - 1].head, (WL)w);
1754 2907
1755 if (!((WL)w)->next) 2908 if (!((WL)w)->next)
2909# if EV_USE_SIGNALFD
2910 if (sigfd < 0) /*TODO*/
2911# endif
1756 { 2912 {
1757#if _WIN32 2913# ifdef _WIN32
2914 evpipe_init (EV_A);
2915
1758 signal (w->signum, sighandler); 2916 signal (w->signum, ev_sighandler);
1759#else 2917# else
1760 struct sigaction sa; 2918 struct sigaction sa;
2919
2920 evpipe_init (EV_A);
2921
1761 sa.sa_handler = sighandler; 2922 sa.sa_handler = ev_sighandler;
1762 sigfillset (&sa.sa_mask); 2923 sigfillset (&sa.sa_mask);
1763 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2924 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1764 sigaction (w->signum, &sa, 0); 2925 sigaction (w->signum, &sa, 0);
2926
2927 if (origflags & EVFLAG_NOSIGMASK)
2928 {
2929 sigemptyset (&sa.sa_mask);
2930 sigaddset (&sa.sa_mask, w->signum);
2931 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2932 }
1765#endif 2933#endif
1766 } 2934 }
1767}
1768 2935
1769void 2936 EV_FREQUENT_CHECK;
2937}
2938
2939void noinline
1770ev_signal_stop (EV_P_ ev_signal *w) 2940ev_signal_stop (EV_P_ ev_signal *w)
1771{ 2941{
1772 clear_pending (EV_A_ (W)w); 2942 clear_pending (EV_A_ (W)w);
1773 if (expect_false (!ev_is_active (w))) 2943 if (expect_false (!ev_is_active (w)))
1774 return; 2944 return;
1775 2945
2946 EV_FREQUENT_CHECK;
2947
1776 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 2948 wlist_del (&signals [w->signum - 1].head, (WL)w);
1777 ev_stop (EV_A_ (W)w); 2949 ev_stop (EV_A_ (W)w);
1778 2950
1779 if (!signals [w->signum - 1].head) 2951 if (!signals [w->signum - 1].head)
2952 {
2953#if EV_MULTIPLICITY
2954 signals [w->signum - 1].loop = 0; /* unattach from signal */
2955#endif
2956#if EV_USE_SIGNALFD
2957 if (sigfd >= 0)
2958 {
2959 sigset_t ss;
2960
2961 sigemptyset (&ss);
2962 sigaddset (&ss, w->signum);
2963 sigdelset (&sigfd_set, w->signum);
2964
2965 signalfd (sigfd, &sigfd_set, 0);
2966 sigprocmask (SIG_UNBLOCK, &ss, 0);
2967 }
2968 else
2969#endif
1780 signal (w->signum, SIG_DFL); 2970 signal (w->signum, SIG_DFL);
2971 }
2972
2973 EV_FREQUENT_CHECK;
1781} 2974}
2975
2976#endif
2977
2978#if EV_CHILD_ENABLE
1782 2979
1783void 2980void
1784ev_child_start (EV_P_ ev_child *w) 2981ev_child_start (EV_P_ ev_child *w)
1785{ 2982{
1786#if EV_MULTIPLICITY 2983#if EV_MULTIPLICITY
1787 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2984 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1788#endif 2985#endif
1789 if (expect_false (ev_is_active (w))) 2986 if (expect_false (ev_is_active (w)))
1790 return; 2987 return;
1791 2988
2989 EV_FREQUENT_CHECK;
2990
1792 ev_start (EV_A_ (W)w, 1); 2991 ev_start (EV_A_ (W)w, 1);
1793 wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2992 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2993
2994 EV_FREQUENT_CHECK;
1794} 2995}
1795 2996
1796void 2997void
1797ev_child_stop (EV_P_ ev_child *w) 2998ev_child_stop (EV_P_ ev_child *w)
1798{ 2999{
1799 clear_pending (EV_A_ (W)w); 3000 clear_pending (EV_A_ (W)w);
1800 if (expect_false (!ev_is_active (w))) 3001 if (expect_false (!ev_is_active (w)))
1801 return; 3002 return;
1802 3003
3004 EV_FREQUENT_CHECK;
3005
1803 wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3006 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
1804 ev_stop (EV_A_ (W)w); 3007 ev_stop (EV_A_ (W)w);
3008
3009 EV_FREQUENT_CHECK;
1805} 3010}
3011
3012#endif
1806 3013
1807#if EV_STAT_ENABLE 3014#if EV_STAT_ENABLE
1808 3015
1809# ifdef _WIN32 3016# ifdef _WIN32
1810# undef lstat 3017# undef lstat
1811# define lstat(a,b) _stati64 (a,b) 3018# define lstat(a,b) _stati64 (a,b)
1812# endif 3019# endif
1813 3020
1814#define DEF_STAT_INTERVAL 5.0074891 3021#define DEF_STAT_INTERVAL 5.0074891
3022#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
1815#define MIN_STAT_INTERVAL 0.1074891 3023#define MIN_STAT_INTERVAL 0.1074891
1816 3024
1817static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3025static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1818 3026
1819#if EV_USE_INOTIFY 3027#if EV_USE_INOTIFY
1820# define EV_INOTIFY_BUFSIZE 8192 3028
3029/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3030# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
1821 3031
1822static void noinline 3032static void noinline
1823infy_add (EV_P_ ev_stat *w) 3033infy_add (EV_P_ ev_stat *w)
1824{ 3034{
1825 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); 3035 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);
1826 3036
1827 if (w->wd < 0) 3037 if (w->wd >= 0)
3038 {
3039 struct statfs sfs;
3040
3041 /* now local changes will be tracked by inotify, but remote changes won't */
3042 /* unless the filesystem is known to be local, we therefore still poll */
3043 /* also do poll on <2.6.25, but with normal frequency */
3044
3045 if (!fs_2625)
3046 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3047 else if (!statfs (w->path, &sfs)
3048 && (sfs.f_type == 0x1373 /* devfs */
3049 || sfs.f_type == 0xEF53 /* ext2/3 */
3050 || sfs.f_type == 0x3153464a /* jfs */
3051 || sfs.f_type == 0x52654973 /* reiser3 */
3052 || sfs.f_type == 0x01021994 /* tempfs */
3053 || sfs.f_type == 0x58465342 /* xfs */))
3054 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3055 else
3056 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
1828 { 3057 }
1829 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 3058 else
3059 {
3060 /* can't use inotify, continue to stat */
3061 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
1830 3062
1831 /* monitor some parent directory for speedup hints */ 3063 /* if path is not there, monitor some parent directory for speedup hints */
3064 /* note that exceeding the hardcoded path limit is not a correctness issue, */
3065 /* but an efficiency issue only */
1832 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3066 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
1833 { 3067 {
1834 char path [4096]; 3068 char path [4096];
1835 strcpy (path, w->path); 3069 strcpy (path, w->path);
1836 3070
… …
1839 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 3073 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
1840 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 3074 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
1841 3075
1842 char *pend = strrchr (path, '/'); 3076 char *pend = strrchr (path, '/');
1843 3077
1844 if (!pend) 3078 if (!pend || pend == path)
1845 break; /* whoops, no '/', complain to your admin */ 3079 break;
1846 3080
1847 *pend = 0; 3081 *pend = 0;
1848 w->wd = inotify_add_watch (fs_fd, path, mask); 3082 w->wd = inotify_add_watch (fs_fd, path, mask);
1849 } 3083 }
1850 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3084 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
1851 } 3085 }
1852 } 3086 }
1853 else
1854 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
1855 3087
1856 if (w->wd >= 0) 3088 if (w->wd >= 0)
1857 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3089 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
3090
3091 /* now re-arm timer, if required */
3092 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3093 ev_timer_again (EV_A_ &w->timer);
3094 if (ev_is_active (&w->timer)) ev_unref (EV_A);
1858} 3095}
1859 3096
1860static void noinline 3097static void noinline
1861infy_del (EV_P_ ev_stat *w) 3098infy_del (EV_P_ ev_stat *w)
1862{ 3099{
… …
1865 3102
1866 if (wd < 0) 3103 if (wd < 0)
1867 return; 3104 return;
1868 3105
1869 w->wd = -2; 3106 w->wd = -2;
1870 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3107 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
1871 wlist_del (&fs_hash [slot].head, (WL)w); 3108 wlist_del (&fs_hash [slot].head, (WL)w);
1872 3109
1873 /* remove this watcher, if others are watching it, they will rearm */ 3110 /* remove this watcher, if others are watching it, they will rearm */
1874 inotify_rm_watch (fs_fd, wd); 3111 inotify_rm_watch (fs_fd, wd);
1875} 3112}
1876 3113
1877static void noinline 3114static void noinline
1878infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3115infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
1879{ 3116{
1880 if (slot < 0) 3117 if (slot < 0)
1881 /* overflow, need to check for all hahs slots */ 3118 /* overflow, need to check for all hash slots */
1882 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3119 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
1883 infy_wd (EV_A_ slot, wd, ev); 3120 infy_wd (EV_A_ slot, wd, ev);
1884 else 3121 else
1885 { 3122 {
1886 WL w_; 3123 WL w_;
1887 3124
1888 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3125 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
1889 { 3126 {
1890 ev_stat *w = (ev_stat *)w_; 3127 ev_stat *w = (ev_stat *)w_;
1891 w_ = w_->next; /* lets us remove this watcher and all before it */ 3128 w_ = w_->next; /* lets us remove this watcher and all before it */
1892 3129
1893 if (w->wd == wd || wd == -1) 3130 if (w->wd == wd || wd == -1)
1894 { 3131 {
1895 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3132 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
1896 { 3133 {
3134 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
1897 w->wd = -1; 3135 w->wd = -1;
1898 infy_add (EV_A_ w); /* re-add, no matter what */ 3136 infy_add (EV_A_ w); /* re-add, no matter what */
1899 } 3137 }
1900 3138
1901 stat_timer_cb (EV_A_ &w->timer, 0); 3139 stat_timer_cb (EV_A_ &w->timer, 0);
… …
1906 3144
1907static void 3145static void
1908infy_cb (EV_P_ ev_io *w, int revents) 3146infy_cb (EV_P_ ev_io *w, int revents)
1909{ 3147{
1910 char buf [EV_INOTIFY_BUFSIZE]; 3148 char buf [EV_INOTIFY_BUFSIZE];
1911 struct inotify_event *ev = (struct inotify_event *)buf;
1912 int ofs; 3149 int ofs;
1913 int len = read (fs_fd, buf, sizeof (buf)); 3150 int len = read (fs_fd, buf, sizeof (buf));
1914 3151
1915 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3152 for (ofs = 0; ofs < len; )
3153 {
3154 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
1916 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3155 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3156 ofs += sizeof (struct inotify_event) + ev->len;
3157 }
1917} 3158}
1918 3159
1919void inline_size 3160inline_size void
3161ev_check_2625 (EV_P)
3162{
3163 /* kernels < 2.6.25 are borked
3164 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3165 */
3166 if (ev_linux_version () < 0x020619)
3167 return;
3168
3169 fs_2625 = 1;
3170}
3171
3172inline_size int
3173infy_newfd (void)
3174{
3175#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3176 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3177 if (fd >= 0)
3178 return fd;
3179#endif
3180 return inotify_init ();
3181}
3182
3183inline_size void
1920infy_init (EV_P) 3184infy_init (EV_P)
1921{ 3185{
1922 if (fs_fd != -2) 3186 if (fs_fd != -2)
1923 return; 3187 return;
1924 3188
3189 fs_fd = -1;
3190
3191 ev_check_2625 (EV_A);
3192
1925 fs_fd = inotify_init (); 3193 fs_fd = infy_newfd ();
1926 3194
1927 if (fs_fd >= 0) 3195 if (fs_fd >= 0)
1928 { 3196 {
3197 fd_intern (fs_fd);
1929 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3198 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
1930 ev_set_priority (&fs_w, EV_MAXPRI); 3199 ev_set_priority (&fs_w, EV_MAXPRI);
1931 ev_io_start (EV_A_ &fs_w); 3200 ev_io_start (EV_A_ &fs_w);
3201 ev_unref (EV_A);
1932 } 3202 }
1933} 3203}
1934 3204
1935void inline_size 3205inline_size void
1936infy_fork (EV_P) 3206infy_fork (EV_P)
1937{ 3207{
1938 int slot; 3208 int slot;
1939 3209
1940 if (fs_fd < 0) 3210 if (fs_fd < 0)
1941 return; 3211 return;
1942 3212
3213 ev_ref (EV_A);
3214 ev_io_stop (EV_A_ &fs_w);
1943 close (fs_fd); 3215 close (fs_fd);
1944 fs_fd = inotify_init (); 3216 fs_fd = infy_newfd ();
1945 3217
3218 if (fs_fd >= 0)
3219 {
3220 fd_intern (fs_fd);
3221 ev_io_set (&fs_w, fs_fd, EV_READ);
3222 ev_io_start (EV_A_ &fs_w);
3223 ev_unref (EV_A);
3224 }
3225
1946 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3226 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
1947 { 3227 {
1948 WL w_ = fs_hash [slot].head; 3228 WL w_ = fs_hash [slot].head;
1949 fs_hash [slot].head = 0; 3229 fs_hash [slot].head = 0;
1950 3230
1951 while (w_) 3231 while (w_)
… …
1956 w->wd = -1; 3236 w->wd = -1;
1957 3237
1958 if (fs_fd >= 0) 3238 if (fs_fd >= 0)
1959 infy_add (EV_A_ w); /* re-add, no matter what */ 3239 infy_add (EV_A_ w); /* re-add, no matter what */
1960 else 3240 else
3241 {
3242 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3243 if (ev_is_active (&w->timer)) ev_ref (EV_A);
1961 ev_timer_start (EV_A_ &w->timer); 3244 ev_timer_again (EV_A_ &w->timer);
3245 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3246 }
1962 } 3247 }
1963
1964 } 3248 }
1965} 3249}
1966 3250
3251#endif
3252
3253#ifdef _WIN32
3254# define EV_LSTAT(p,b) _stati64 (p, b)
3255#else
3256# define EV_LSTAT(p,b) lstat (p, b)
1967#endif 3257#endif
1968 3258
1969void 3259void
1970ev_stat_stat (EV_P_ ev_stat *w) 3260ev_stat_stat (EV_P_ ev_stat *w)
1971{ 3261{
… …
1978static void noinline 3268static void noinline
1979stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3269stat_timer_cb (EV_P_ ev_timer *w_, int revents)
1980{ 3270{
1981 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3271 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
1982 3272
1983 /* we copy this here each the time so that */ 3273 ev_statdata prev = w->attr;
1984 /* prev has the old value when the callback gets invoked */
1985 w->prev = w->attr;
1986 ev_stat_stat (EV_A_ w); 3274 ev_stat_stat (EV_A_ w);
1987 3275
1988 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3276 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
1989 if ( 3277 if (
1990 w->prev.st_dev != w->attr.st_dev 3278 prev.st_dev != w->attr.st_dev
1991 || w->prev.st_ino != w->attr.st_ino 3279 || prev.st_ino != w->attr.st_ino
1992 || w->prev.st_mode != w->attr.st_mode 3280 || prev.st_mode != w->attr.st_mode
1993 || w->prev.st_nlink != w->attr.st_nlink 3281 || prev.st_nlink != w->attr.st_nlink
1994 || w->prev.st_uid != w->attr.st_uid 3282 || prev.st_uid != w->attr.st_uid
1995 || w->prev.st_gid != w->attr.st_gid 3283 || prev.st_gid != w->attr.st_gid
1996 || w->prev.st_rdev != w->attr.st_rdev 3284 || prev.st_rdev != w->attr.st_rdev
1997 || w->prev.st_size != w->attr.st_size 3285 || prev.st_size != w->attr.st_size
1998 || w->prev.st_atime != w->attr.st_atime 3286 || prev.st_atime != w->attr.st_atime
1999 || w->prev.st_mtime != w->attr.st_mtime 3287 || prev.st_mtime != w->attr.st_mtime
2000 || w->prev.st_ctime != w->attr.st_ctime 3288 || prev.st_ctime != w->attr.st_ctime
2001 ) { 3289 ) {
3290 /* we only update w->prev on actual differences */
3291 /* in case we test more often than invoke the callback, */
3292 /* to ensure that prev is always different to attr */
3293 w->prev = prev;
3294
2002 #if EV_USE_INOTIFY 3295 #if EV_USE_INOTIFY
3296 if (fs_fd >= 0)
3297 {
2003 infy_del (EV_A_ w); 3298 infy_del (EV_A_ w);
2004 infy_add (EV_A_ w); 3299 infy_add (EV_A_ w);
2005 ev_stat_stat (EV_A_ w); /* avoid race... */ 3300 ev_stat_stat (EV_A_ w); /* avoid race... */
3301 }
2006 #endif 3302 #endif
2007 3303
2008 ev_feed_event (EV_A_ w, EV_STAT); 3304 ev_feed_event (EV_A_ w, EV_STAT);
2009 } 3305 }
2010} 3306}
… …
2013ev_stat_start (EV_P_ ev_stat *w) 3309ev_stat_start (EV_P_ ev_stat *w)
2014{ 3310{
2015 if (expect_false (ev_is_active (w))) 3311 if (expect_false (ev_is_active (w)))
2016 return; 3312 return;
2017 3313
2018 /* since we use memcmp, we need to clear any padding data etc. */
2019 memset (&w->prev, 0, sizeof (ev_statdata));
2020 memset (&w->attr, 0, sizeof (ev_statdata));
2021
2022 ev_stat_stat (EV_A_ w); 3314 ev_stat_stat (EV_A_ w);
2023 3315
3316 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2024 if (w->interval < MIN_STAT_INTERVAL) 3317 w->interval = MIN_STAT_INTERVAL;
2025 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2026 3318
2027 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 3319 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2028 ev_set_priority (&w->timer, ev_priority (w)); 3320 ev_set_priority (&w->timer, ev_priority (w));
2029 3321
2030#if EV_USE_INOTIFY 3322#if EV_USE_INOTIFY
2031 infy_init (EV_A); 3323 infy_init (EV_A);
2032 3324
2033 if (fs_fd >= 0) 3325 if (fs_fd >= 0)
2034 infy_add (EV_A_ w); 3326 infy_add (EV_A_ w);
2035 else 3327 else
2036#endif 3328#endif
3329 {
2037 ev_timer_start (EV_A_ &w->timer); 3330 ev_timer_again (EV_A_ &w->timer);
3331 ev_unref (EV_A);
3332 }
2038 3333
2039 ev_start (EV_A_ (W)w, 1); 3334 ev_start (EV_A_ (W)w, 1);
3335
3336 EV_FREQUENT_CHECK;
2040} 3337}
2041 3338
2042void 3339void
2043ev_stat_stop (EV_P_ ev_stat *w) 3340ev_stat_stop (EV_P_ ev_stat *w)
2044{ 3341{
2045 clear_pending (EV_A_ (W)w); 3342 clear_pending (EV_A_ (W)w);
2046 if (expect_false (!ev_is_active (w))) 3343 if (expect_false (!ev_is_active (w)))
2047 return; 3344 return;
2048 3345
3346 EV_FREQUENT_CHECK;
3347
2049#if EV_USE_INOTIFY 3348#if EV_USE_INOTIFY
2050 infy_del (EV_A_ w); 3349 infy_del (EV_A_ w);
2051#endif 3350#endif
3351
3352 if (ev_is_active (&w->timer))
3353 {
3354 ev_ref (EV_A);
2052 ev_timer_stop (EV_A_ &w->timer); 3355 ev_timer_stop (EV_A_ &w->timer);
3356 }
2053 3357
2054 ev_stop (EV_A_ (W)w); 3358 ev_stop (EV_A_ (W)w);
3359
3360 EV_FREQUENT_CHECK;
2055} 3361}
2056#endif 3362#endif
2057 3363
2058#if EV_IDLE_ENABLE 3364#if EV_IDLE_ENABLE
2059void 3365void
… …
2061{ 3367{
2062 if (expect_false (ev_is_active (w))) 3368 if (expect_false (ev_is_active (w)))
2063 return; 3369 return;
2064 3370
2065 pri_adjust (EV_A_ (W)w); 3371 pri_adjust (EV_A_ (W)w);
3372
3373 EV_FREQUENT_CHECK;
2066 3374
2067 { 3375 {
2068 int active = ++idlecnt [ABSPRI (w)]; 3376 int active = ++idlecnt [ABSPRI (w)];
2069 3377
2070 ++idleall; 3378 ++idleall;
2071 ev_start (EV_A_ (W)w, active); 3379 ev_start (EV_A_ (W)w, active);
2072 3380
2073 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 3381 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2074 idles [ABSPRI (w)][active - 1] = w; 3382 idles [ABSPRI (w)][active - 1] = w;
2075 } 3383 }
3384
3385 EV_FREQUENT_CHECK;
2076} 3386}
2077 3387
2078void 3388void
2079ev_idle_stop (EV_P_ ev_idle *w) 3389ev_idle_stop (EV_P_ ev_idle *w)
2080{ 3390{
2081 clear_pending (EV_A_ (W)w); 3391 clear_pending (EV_A_ (W)w);
2082 if (expect_false (!ev_is_active (w))) 3392 if (expect_false (!ev_is_active (w)))
2083 return; 3393 return;
2084 3394
3395 EV_FREQUENT_CHECK;
3396
2085 { 3397 {
2086 int active = ((W)w)->active; 3398 int active = ev_active (w);
2087 3399
2088 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]]; 3400 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2089 ((W)idles [ABSPRI (w)][active - 1])->active = active; 3401 ev_active (idles [ABSPRI (w)][active - 1]) = active;
2090 3402
2091 ev_stop (EV_A_ (W)w); 3403 ev_stop (EV_A_ (W)w);
2092 --idleall; 3404 --idleall;
2093 } 3405 }
2094}
2095#endif
2096 3406
3407 EV_FREQUENT_CHECK;
3408}
3409#endif
3410
3411#if EV_PREPARE_ENABLE
2097void 3412void
2098ev_prepare_start (EV_P_ ev_prepare *w) 3413ev_prepare_start (EV_P_ ev_prepare *w)
2099{ 3414{
2100 if (expect_false (ev_is_active (w))) 3415 if (expect_false (ev_is_active (w)))
2101 return; 3416 return;
3417
3418 EV_FREQUENT_CHECK;
2102 3419
2103 ev_start (EV_A_ (W)w, ++preparecnt); 3420 ev_start (EV_A_ (W)w, ++preparecnt);
2104 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 3421 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2105 prepares [preparecnt - 1] = w; 3422 prepares [preparecnt - 1] = w;
3423
3424 EV_FREQUENT_CHECK;
2106} 3425}
2107 3426
2108void 3427void
2109ev_prepare_stop (EV_P_ ev_prepare *w) 3428ev_prepare_stop (EV_P_ ev_prepare *w)
2110{ 3429{
2111 clear_pending (EV_A_ (W)w); 3430 clear_pending (EV_A_ (W)w);
2112 if (expect_false (!ev_is_active (w))) 3431 if (expect_false (!ev_is_active (w)))
2113 return; 3432 return;
2114 3433
3434 EV_FREQUENT_CHECK;
3435
2115 { 3436 {
2116 int active = ((W)w)->active; 3437 int active = ev_active (w);
3438
2117 prepares [active - 1] = prepares [--preparecnt]; 3439 prepares [active - 1] = prepares [--preparecnt];
2118 ((W)prepares [active - 1])->active = active; 3440 ev_active (prepares [active - 1]) = active;
2119 } 3441 }
2120 3442
2121 ev_stop (EV_A_ (W)w); 3443 ev_stop (EV_A_ (W)w);
2122}
2123 3444
3445 EV_FREQUENT_CHECK;
3446}
3447#endif
3448
3449#if EV_CHECK_ENABLE
2124void 3450void
2125ev_check_start (EV_P_ ev_check *w) 3451ev_check_start (EV_P_ ev_check *w)
2126{ 3452{
2127 if (expect_false (ev_is_active (w))) 3453 if (expect_false (ev_is_active (w)))
2128 return; 3454 return;
3455
3456 EV_FREQUENT_CHECK;
2129 3457
2130 ev_start (EV_A_ (W)w, ++checkcnt); 3458 ev_start (EV_A_ (W)w, ++checkcnt);
2131 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 3459 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2132 checks [checkcnt - 1] = w; 3460 checks [checkcnt - 1] = w;
3461
3462 EV_FREQUENT_CHECK;
2133} 3463}
2134 3464
2135void 3465void
2136ev_check_stop (EV_P_ ev_check *w) 3466ev_check_stop (EV_P_ ev_check *w)
2137{ 3467{
2138 clear_pending (EV_A_ (W)w); 3468 clear_pending (EV_A_ (W)w);
2139 if (expect_false (!ev_is_active (w))) 3469 if (expect_false (!ev_is_active (w)))
2140 return; 3470 return;
2141 3471
3472 EV_FREQUENT_CHECK;
3473
2142 { 3474 {
2143 int active = ((W)w)->active; 3475 int active = ev_active (w);
3476
2144 checks [active - 1] = checks [--checkcnt]; 3477 checks [active - 1] = checks [--checkcnt];
2145 ((W)checks [active - 1])->active = active; 3478 ev_active (checks [active - 1]) = active;
2146 } 3479 }
2147 3480
2148 ev_stop (EV_A_ (W)w); 3481 ev_stop (EV_A_ (W)w);
3482
3483 EV_FREQUENT_CHECK;
2149} 3484}
3485#endif
2150 3486
2151#if EV_EMBED_ENABLE 3487#if EV_EMBED_ENABLE
2152void noinline 3488void noinline
2153ev_embed_sweep (EV_P_ ev_embed *w) 3489ev_embed_sweep (EV_P_ ev_embed *w)
2154{ 3490{
2155 ev_loop (w->loop, EVLOOP_NONBLOCK); 3491 ev_run (w->other, EVRUN_NOWAIT);
2156} 3492}
2157 3493
2158static void 3494static void
2159embed_cb (EV_P_ ev_io *io, int revents) 3495embed_io_cb (EV_P_ ev_io *io, int revents)
2160{ 3496{
2161 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 3497 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2162 3498
2163 if (ev_cb (w)) 3499 if (ev_cb (w))
2164 ev_feed_event (EV_A_ (W)w, EV_EMBED); 3500 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2165 else 3501 else
2166 ev_embed_sweep (loop, w); 3502 ev_run (w->other, EVRUN_NOWAIT);
2167} 3503}
3504
3505static void
3506embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3507{
3508 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
3509
3510 {
3511 EV_P = w->other;
3512
3513 while (fdchangecnt)
3514 {
3515 fd_reify (EV_A);
3516 ev_run (EV_A_ EVRUN_NOWAIT);
3517 }
3518 }
3519}
3520
3521static void
3522embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
3523{
3524 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3525
3526 ev_embed_stop (EV_A_ w);
3527
3528 {
3529 EV_P = w->other;
3530
3531 ev_loop_fork (EV_A);
3532 ev_run (EV_A_ EVRUN_NOWAIT);
3533 }
3534
3535 ev_embed_start (EV_A_ w);
3536}
3537
3538#if 0
3539static void
3540embed_idle_cb (EV_P_ ev_idle *idle, int revents)
3541{
3542 ev_idle_stop (EV_A_ idle);
3543}
3544#endif
2168 3545
2169void 3546void
2170ev_embed_start (EV_P_ ev_embed *w) 3547ev_embed_start (EV_P_ ev_embed *w)
2171{ 3548{
2172 if (expect_false (ev_is_active (w))) 3549 if (expect_false (ev_is_active (w)))
2173 return; 3550 return;
2174 3551
2175 { 3552 {
2176 struct ev_loop *loop = w->loop; 3553 EV_P = w->other;
2177 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3554 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2178 ev_io_init (&w->io, embed_cb, backend_fd, EV_READ); 3555 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2179 } 3556 }
3557
3558 EV_FREQUENT_CHECK;
2180 3559
2181 ev_set_priority (&w->io, ev_priority (w)); 3560 ev_set_priority (&w->io, ev_priority (w));
2182 ev_io_start (EV_A_ &w->io); 3561 ev_io_start (EV_A_ &w->io);
2183 3562
3563 ev_prepare_init (&w->prepare, embed_prepare_cb);
3564 ev_set_priority (&w->prepare, EV_MINPRI);
3565 ev_prepare_start (EV_A_ &w->prepare);
3566
3567 ev_fork_init (&w->fork, embed_fork_cb);
3568 ev_fork_start (EV_A_ &w->fork);
3569
3570 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
3571
2184 ev_start (EV_A_ (W)w, 1); 3572 ev_start (EV_A_ (W)w, 1);
3573
3574 EV_FREQUENT_CHECK;
2185} 3575}
2186 3576
2187void 3577void
2188ev_embed_stop (EV_P_ ev_embed *w) 3578ev_embed_stop (EV_P_ ev_embed *w)
2189{ 3579{
2190 clear_pending (EV_A_ (W)w); 3580 clear_pending (EV_A_ (W)w);
2191 if (expect_false (!ev_is_active (w))) 3581 if (expect_false (!ev_is_active (w)))
2192 return; 3582 return;
2193 3583
3584 EV_FREQUENT_CHECK;
3585
2194 ev_io_stop (EV_A_ &w->io); 3586 ev_io_stop (EV_A_ &w->io);
3587 ev_prepare_stop (EV_A_ &w->prepare);
3588 ev_fork_stop (EV_A_ &w->fork);
2195 3589
2196 ev_stop (EV_A_ (W)w); 3590 ev_stop (EV_A_ (W)w);
3591
3592 EV_FREQUENT_CHECK;
2197} 3593}
2198#endif 3594#endif
2199 3595
2200#if EV_FORK_ENABLE 3596#if EV_FORK_ENABLE
2201void 3597void
2202ev_fork_start (EV_P_ ev_fork *w) 3598ev_fork_start (EV_P_ ev_fork *w)
2203{ 3599{
2204 if (expect_false (ev_is_active (w))) 3600 if (expect_false (ev_is_active (w)))
2205 return; 3601 return;
3602
3603 EV_FREQUENT_CHECK;
2206 3604
2207 ev_start (EV_A_ (W)w, ++forkcnt); 3605 ev_start (EV_A_ (W)w, ++forkcnt);
2208 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 3606 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2209 forks [forkcnt - 1] = w; 3607 forks [forkcnt - 1] = w;
3608
3609 EV_FREQUENT_CHECK;
2210} 3610}
2211 3611
2212void 3612void
2213ev_fork_stop (EV_P_ ev_fork *w) 3613ev_fork_stop (EV_P_ ev_fork *w)
2214{ 3614{
2215 clear_pending (EV_A_ (W)w); 3615 clear_pending (EV_A_ (W)w);
2216 if (expect_false (!ev_is_active (w))) 3616 if (expect_false (!ev_is_active (w)))
2217 return; 3617 return;
2218 3618
3619 EV_FREQUENT_CHECK;
3620
2219 { 3621 {
2220 int active = ((W)w)->active; 3622 int active = ev_active (w);
3623
2221 forks [active - 1] = forks [--forkcnt]; 3624 forks [active - 1] = forks [--forkcnt];
2222 ((W)forks [active - 1])->active = active; 3625 ev_active (forks [active - 1]) = active;
2223 } 3626 }
2224 3627
2225 ev_stop (EV_A_ (W)w); 3628 ev_stop (EV_A_ (W)w);
3629
3630 EV_FREQUENT_CHECK;
3631}
3632#endif
3633
3634#if EV_CLEANUP_ENABLE
3635void
3636ev_cleanup_start (EV_P_ ev_cleanup *w)
3637{
3638 if (expect_false (ev_is_active (w)))
3639 return;
3640
3641 EV_FREQUENT_CHECK;
3642
3643 ev_start (EV_A_ (W)w, ++cleanupcnt);
3644 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
3645 cleanups [cleanupcnt - 1] = w;
3646
3647 /* cleanup watchers should never keep a refcount on the loop */
3648 ev_unref (EV_A);
3649 EV_FREQUENT_CHECK;
3650}
3651
3652void
3653ev_cleanup_stop (EV_P_ ev_cleanup *w)
3654{
3655 clear_pending (EV_A_ (W)w);
3656 if (expect_false (!ev_is_active (w)))
3657 return;
3658
3659 EV_FREQUENT_CHECK;
3660 ev_ref (EV_A);
3661
3662 {
3663 int active = ev_active (w);
3664
3665 cleanups [active - 1] = cleanups [--cleanupcnt];
3666 ev_active (cleanups [active - 1]) = active;
3667 }
3668
3669 ev_stop (EV_A_ (W)w);
3670
3671 EV_FREQUENT_CHECK;
3672}
3673#endif
3674
3675#if EV_ASYNC_ENABLE
3676void
3677ev_async_start (EV_P_ ev_async *w)
3678{
3679 if (expect_false (ev_is_active (w)))
3680 return;
3681
3682 w->sent = 0;
3683
3684 evpipe_init (EV_A);
3685
3686 EV_FREQUENT_CHECK;
3687
3688 ev_start (EV_A_ (W)w, ++asynccnt);
3689 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
3690 asyncs [asynccnt - 1] = w;
3691
3692 EV_FREQUENT_CHECK;
3693}
3694
3695void
3696ev_async_stop (EV_P_ ev_async *w)
3697{
3698 clear_pending (EV_A_ (W)w);
3699 if (expect_false (!ev_is_active (w)))
3700 return;
3701
3702 EV_FREQUENT_CHECK;
3703
3704 {
3705 int active = ev_active (w);
3706
3707 asyncs [active - 1] = asyncs [--asynccnt];
3708 ev_active (asyncs [active - 1]) = active;
3709 }
3710
3711 ev_stop (EV_A_ (W)w);
3712
3713 EV_FREQUENT_CHECK;
3714}
3715
3716void
3717ev_async_send (EV_P_ ev_async *w)
3718{
3719 w->sent = 1;
3720 evpipe_write (EV_A_ &async_pending);
2226} 3721}
2227#endif 3722#endif
2228 3723
2229/*****************************************************************************/ 3724/*****************************************************************************/
2230 3725
… …
2240once_cb (EV_P_ struct ev_once *once, int revents) 3735once_cb (EV_P_ struct ev_once *once, int revents)
2241{ 3736{
2242 void (*cb)(int revents, void *arg) = once->cb; 3737 void (*cb)(int revents, void *arg) = once->cb;
2243 void *arg = once->arg; 3738 void *arg = once->arg;
2244 3739
2245 ev_io_stop (EV_A_ &once->io); 3740 ev_io_stop (EV_A_ &once->io);
2246 ev_timer_stop (EV_A_ &once->to); 3741 ev_timer_stop (EV_A_ &once->to);
2247 ev_free (once); 3742 ev_free (once);
2248 3743
2249 cb (revents, arg); 3744 cb (revents, arg);
2250} 3745}
2251 3746
2252static void 3747static void
2253once_cb_io (EV_P_ ev_io *w, int revents) 3748once_cb_io (EV_P_ ev_io *w, int revents)
2254{ 3749{
2255 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 3750 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
3751
3752 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2256} 3753}
2257 3754
2258static void 3755static void
2259once_cb_to (EV_P_ ev_timer *w, int revents) 3756once_cb_to (EV_P_ ev_timer *w, int revents)
2260{ 3757{
2261 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 3758 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
3759
3760 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2262} 3761}
2263 3762
2264void 3763void
2265ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 3764ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2266{ 3765{
2267 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 3766 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
2268 3767
2269 if (expect_false (!once)) 3768 if (expect_false (!once))
2270 { 3769 {
2271 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 3770 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
2272 return; 3771 return;
2273 } 3772 }
2274 3773
2275 once->cb = cb; 3774 once->cb = cb;
2276 once->arg = arg; 3775 once->arg = arg;
… …
2288 ev_timer_set (&once->to, timeout, 0.); 3787 ev_timer_set (&once->to, timeout, 0.);
2289 ev_timer_start (EV_A_ &once->to); 3788 ev_timer_start (EV_A_ &once->to);
2290 } 3789 }
2291} 3790}
2292 3791
2293#ifdef __cplusplus 3792/*****************************************************************************/
2294} 3793
3794#if EV_WALK_ENABLE
3795void
3796ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3797{
3798 int i, j;
3799 ev_watcher_list *wl, *wn;
3800
3801 if (types & (EV_IO | EV_EMBED))
3802 for (i = 0; i < anfdmax; ++i)
3803 for (wl = anfds [i].head; wl; )
3804 {
3805 wn = wl->next;
3806
3807#if EV_EMBED_ENABLE
3808 if (ev_cb ((ev_io *)wl) == embed_io_cb)
3809 {
3810 if (types & EV_EMBED)
3811 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
3812 }
3813 else
3814#endif
3815#if EV_USE_INOTIFY
3816 if (ev_cb ((ev_io *)wl) == infy_cb)
3817 ;
3818 else
3819#endif
3820 if ((ev_io *)wl != &pipe_w)
3821 if (types & EV_IO)
3822 cb (EV_A_ EV_IO, wl);
3823
3824 wl = wn;
3825 }
3826
3827 if (types & (EV_TIMER | EV_STAT))
3828 for (i = timercnt + HEAP0; i-- > HEAP0; )
3829#if EV_STAT_ENABLE
3830 /*TODO: timer is not always active*/
3831 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
3832 {
3833 if (types & EV_STAT)
3834 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
3835 }
3836 else
3837#endif
3838 if (types & EV_TIMER)
3839 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
3840
3841#if EV_PERIODIC_ENABLE
3842 if (types & EV_PERIODIC)
3843 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
3844 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3845#endif
3846
3847#if EV_IDLE_ENABLE
3848 if (types & EV_IDLE)
3849 for (j = NUMPRI; i--; )
3850 for (i = idlecnt [j]; i--; )
3851 cb (EV_A_ EV_IDLE, idles [j][i]);
3852#endif
3853
3854#if EV_FORK_ENABLE
3855 if (types & EV_FORK)
3856 for (i = forkcnt; i--; )
3857 if (ev_cb (forks [i]) != embed_fork_cb)
3858 cb (EV_A_ EV_FORK, forks [i]);
3859#endif
3860
3861#if EV_ASYNC_ENABLE
3862 if (types & EV_ASYNC)
3863 for (i = asynccnt; i--; )
3864 cb (EV_A_ EV_ASYNC, asyncs [i]);
3865#endif
3866
3867#if EV_PREPARE_ENABLE
3868 if (types & EV_PREPARE)
3869 for (i = preparecnt; i--; )
3870# if EV_EMBED_ENABLE
3871 if (ev_cb (prepares [i]) != embed_prepare_cb)
2295#endif 3872# endif
3873 cb (EV_A_ EV_PREPARE, prepares [i]);
3874#endif
2296 3875
3876#if EV_CHECK_ENABLE
3877 if (types & EV_CHECK)
3878 for (i = checkcnt; i--; )
3879 cb (EV_A_ EV_CHECK, checks [i]);
3880#endif
3881
3882#if EV_SIGNAL_ENABLE
3883 if (types & EV_SIGNAL)
3884 for (i = 0; i < EV_NSIG - 1; ++i)
3885 for (wl = signals [i].head; wl; )
3886 {
3887 wn = wl->next;
3888 cb (EV_A_ EV_SIGNAL, wl);
3889 wl = wn;
3890 }
3891#endif
3892
3893#if EV_CHILD_ENABLE
3894 if (types & EV_CHILD)
3895 for (i = (EV_PID_HASHSIZE); i--; )
3896 for (wl = childs [i]; wl; )
3897 {
3898 wn = wl->next;
3899 cb (EV_A_ EV_CHILD, wl);
3900 wl = wn;
3901 }
3902#endif
3903/* EV_STAT 0x00001000 /* stat data changed */
3904/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3905}
3906#endif
3907
3908#if EV_MULTIPLICITY
3909 #include "ev_wrap.h"
3910#endif
3911
3912EV_CPP(})
3913

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