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Comparing libev/ev.c (file contents):
Revision 1.198 by root, Sun Dec 23 04:45:51 2007 UTC vs.
Revision 1.360 by root, Sun Oct 24 18:12:41 2010 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * modification, are permitted provided that the following conditions are 8 * tion, are permitted provided that the following conditions are met:
9 * met: 9 *
10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer.
12 *
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
22 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
23 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
24 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
25 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
26 * OF THE POSSIBILITY OF SUCH DAMAGE.
10 * 27 *
11 * * Redistributions of source code must retain the above copyright 28 * Alternatively, the contents of this file may be used under the terms of
12 * notice, this list of conditions and the following disclaimer. 29 * the GNU General Public License ("GPL") version 2 or any later version,
13 * 30 * in which case the provisions of the GPL are applicable instead of
14 * * Redistributions in binary form must reproduce the above 31 * the above. If you wish to allow the use of your version of this file
15 * copyright notice, this list of conditions and the following 32 * only under the terms of the GPL and not to allow others to use your
16 * disclaimer in the documentation and/or other materials provided 33 * version of this file under the BSD license, indicate your decision
17 * with the distribution. 34 * by deleting the provisions above and replace them with the notice
18 * 35 * and other provisions required by the GPL. If you do not delete the
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 36 * provisions above, a recipient may use your version of this file under
20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 37 * either the BSD or the GPL.
21 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
22 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
23 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
24 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
25 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 */ 38 */
31 39
32#ifdef __cplusplus 40/* this big block deduces configuration from config.h */
33extern "C" {
34#endif
35
36#ifndef EV_STANDALONE 41#ifndef EV_STANDALONE
37# ifdef EV_CONFIG_H 42# ifdef EV_CONFIG_H
38# include EV_CONFIG_H 43# include EV_CONFIG_H
39# else 44# else
40# include "config.h" 45# include "config.h"
41# endif 46# endif
42 47
48# if HAVE_CLOCK_SYSCALL
49# ifndef EV_USE_CLOCK_SYSCALL
50# define EV_USE_CLOCK_SYSCALL 1
51# ifndef EV_USE_REALTIME
52# define EV_USE_REALTIME 0
53# endif
54# ifndef EV_USE_MONOTONIC
55# define EV_USE_MONOTONIC 1
56# endif
57# endif
58# elif !defined(EV_USE_CLOCK_SYSCALL)
59# define EV_USE_CLOCK_SYSCALL 0
60# endif
61
43# if HAVE_CLOCK_GETTIME 62# if HAVE_CLOCK_GETTIME
44# ifndef EV_USE_MONOTONIC 63# ifndef EV_USE_MONOTONIC
45# define EV_USE_MONOTONIC 1 64# define EV_USE_MONOTONIC 1
46# endif 65# endif
47# ifndef EV_USE_REALTIME 66# ifndef EV_USE_REALTIME
48# define EV_USE_REALTIME 1 67# define EV_USE_REALTIME 0
49# endif 68# endif
50# else 69# else
51# ifndef EV_USE_MONOTONIC 70# ifndef EV_USE_MONOTONIC
52# define EV_USE_MONOTONIC 0 71# define EV_USE_MONOTONIC 0
53# endif 72# endif
54# ifndef EV_USE_REALTIME 73# ifndef EV_USE_REALTIME
55# define EV_USE_REALTIME 0 74# define EV_USE_REALTIME 0
56# endif 75# endif
57# endif 76# endif
58 77
78# if HAVE_NANOSLEEP
59# ifndef EV_USE_NANOSLEEP 79# ifndef EV_USE_NANOSLEEP
60# if HAVE_NANOSLEEP
61# define EV_USE_NANOSLEEP 1 80# define EV_USE_NANOSLEEP EV_FEATURE_OS
81# endif
62# else 82# else
83# undef EV_USE_NANOSLEEP
63# define EV_USE_NANOSLEEP 0 84# define EV_USE_NANOSLEEP 0
85# endif
86
87# if HAVE_SELECT && HAVE_SYS_SELECT_H
88# ifndef EV_USE_SELECT
89# define EV_USE_SELECT EV_FEATURE_BACKENDS
64# endif 90# endif
91# else
92# undef EV_USE_SELECT
93# define EV_USE_SELECT 0
65# endif 94# endif
66 95
96# if HAVE_POLL && HAVE_POLL_H
67# ifndef EV_USE_SELECT 97# ifndef EV_USE_POLL
68# if HAVE_SELECT && HAVE_SYS_SELECT_H 98# define EV_USE_POLL EV_FEATURE_BACKENDS
69# define EV_USE_SELECT 1
70# else
71# define EV_USE_SELECT 0
72# endif 99# endif
73# endif
74
75# ifndef EV_USE_POLL
76# if HAVE_POLL && HAVE_POLL_H
77# define EV_USE_POLL 1
78# else 100# else
101# undef EV_USE_POLL
79# define EV_USE_POLL 0 102# define EV_USE_POLL 0
80# endif
81# endif 103# endif
82 104
83# ifndef EV_USE_EPOLL
84# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 105# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
85# define EV_USE_EPOLL 1 106# ifndef EV_USE_EPOLL
86# else 107# define EV_USE_EPOLL EV_FEATURE_BACKENDS
87# define EV_USE_EPOLL 0
88# endif 108# endif
109# else
110# undef EV_USE_EPOLL
111# define EV_USE_EPOLL 0
89# endif 112# endif
90 113
114# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
91# ifndef EV_USE_KQUEUE 115# ifndef EV_USE_KQUEUE
92# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 116# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
93# define EV_USE_KQUEUE 1
94# else
95# define EV_USE_KQUEUE 0
96# endif 117# endif
118# else
119# undef EV_USE_KQUEUE
120# define EV_USE_KQUEUE 0
97# endif 121# endif
98 122
99# ifndef EV_USE_PORT
100# if HAVE_PORT_H && HAVE_PORT_CREATE 123# if HAVE_PORT_H && HAVE_PORT_CREATE
101# define EV_USE_PORT 1 124# ifndef EV_USE_PORT
102# else 125# define EV_USE_PORT EV_FEATURE_BACKENDS
103# define EV_USE_PORT 0
104# endif 126# endif
127# else
128# undef EV_USE_PORT
129# define EV_USE_PORT 0
105# endif 130# endif
106 131
107# ifndef EV_USE_INOTIFY
108# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 132# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
109# define EV_USE_INOTIFY 1 133# ifndef EV_USE_INOTIFY
110# else
111# define EV_USE_INOTIFY 0 134# define EV_USE_INOTIFY EV_FEATURE_OS
112# endif 135# endif
136# else
137# undef EV_USE_INOTIFY
138# define EV_USE_INOTIFY 0
113# endif 139# endif
114 140
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
115#endif 159#endif
116 160
117#include <math.h> 161#include <math.h>
118#include <stdlib.h> 162#include <stdlib.h>
163#include <string.h>
119#include <fcntl.h> 164#include <fcntl.h>
120#include <stddef.h> 165#include <stddef.h>
121 166
122#include <stdio.h> 167#include <stdio.h>
123 168
124#include <assert.h> 169#include <assert.h>
125#include <errno.h> 170#include <errno.h>
126#include <sys/types.h> 171#include <sys/types.h>
127#include <time.h> 172#include <time.h>
173#include <limits.h>
128 174
129#include <signal.h> 175#include <signal.h>
130 176
131#ifdef EV_H 177#ifdef EV_H
132# include EV_H 178# include EV_H
133#else 179#else
134# include "ev.h" 180# include "ev.h"
135#endif 181#endif
182
183EV_CPP(extern "C" {)
136 184
137#ifndef _WIN32 185#ifndef _WIN32
138# include <sys/time.h> 186# include <sys/time.h>
139# include <sys/wait.h> 187# include <sys/wait.h>
140# include <unistd.h> 188# include <unistd.h>
141#else 189#else
190# include <io.h>
142# define WIN32_LEAN_AND_MEAN 191# define WIN32_LEAN_AND_MEAN
143# include <windows.h> 192# include <windows.h>
144# ifndef EV_SELECT_IS_WINSOCKET 193# ifndef EV_SELECT_IS_WINSOCKET
145# define EV_SELECT_IS_WINSOCKET 1 194# define EV_SELECT_IS_WINSOCKET 1
146# 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
147#endif 242# endif
148 243#endif
149/**/
150 244
151#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
152# define EV_USE_MONOTONIC 0 249# define EV_USE_MONOTONIC 0
250# endif
153#endif 251#endif
154 252
155#ifndef EV_USE_REALTIME 253#ifndef EV_USE_REALTIME
156# define EV_USE_REALTIME 0 254# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
157#endif 255#endif
158 256
159#ifndef EV_USE_NANOSLEEP 257#ifndef EV_USE_NANOSLEEP
258# if _POSIX_C_SOURCE >= 199309L
259# define EV_USE_NANOSLEEP EV_FEATURE_OS
260# else
160# define EV_USE_NANOSLEEP 0 261# define EV_USE_NANOSLEEP 0
262# endif
161#endif 263#endif
162 264
163#ifndef EV_USE_SELECT 265#ifndef EV_USE_SELECT
164# define EV_USE_SELECT 1 266# define EV_USE_SELECT EV_FEATURE_BACKENDS
165#endif 267#endif
166 268
167#ifndef EV_USE_POLL 269#ifndef EV_USE_POLL
168# ifdef _WIN32 270# ifdef _WIN32
169# define EV_USE_POLL 0 271# define EV_USE_POLL 0
170# else 272# else
171# define EV_USE_POLL 1 273# define EV_USE_POLL EV_FEATURE_BACKENDS
172# endif 274# endif
173#endif 275#endif
174 276
175#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
176# define EV_USE_EPOLL 0 281# define EV_USE_EPOLL 0
282# endif
177#endif 283#endif
178 284
179#ifndef EV_USE_KQUEUE 285#ifndef EV_USE_KQUEUE
180# define EV_USE_KQUEUE 0 286# define EV_USE_KQUEUE 0
181#endif 287#endif
… …
183#ifndef EV_USE_PORT 289#ifndef EV_USE_PORT
184# define EV_USE_PORT 0 290# define EV_USE_PORT 0
185#endif 291#endif
186 292
187#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
188# define EV_USE_INOTIFY 0 297# define EV_USE_INOTIFY 0
298# endif
189#endif 299#endif
190 300
191#ifndef EV_PID_HASHSIZE 301#ifndef EV_PID_HASHSIZE
192# if EV_MINIMAL 302# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
193# 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
194# else 312# else
195# define EV_PID_HASHSIZE 16 313# define EV_USE_EVENTFD 0
196# endif 314# endif
197#endif 315#endif
198 316
199#ifndef EV_INOTIFY_HASHSIZE 317#ifndef EV_USE_SIGNALFD
200# if EV_MINIMAL 318# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
201# define EV_INOTIFY_HASHSIZE 1 319# define EV_USE_SIGNALFD EV_FEATURE_OS
202# else 320# else
203# define EV_INOTIFY_HASHSIZE 16 321# define EV_USE_SIGNALFD 0
204# endif 322# endif
205#endif 323#endif
206 324
207/**/ 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
208 364
209#ifndef CLOCK_MONOTONIC 365#ifndef CLOCK_MONOTONIC
210# undef EV_USE_MONOTONIC 366# undef EV_USE_MONOTONIC
211# define EV_USE_MONOTONIC 0 367# define EV_USE_MONOTONIC 0
212#endif 368#endif
… …
226# include <sys/select.h> 382# include <sys/select.h>
227# endif 383# endif
228#endif 384#endif
229 385
230#if EV_USE_INOTIFY 386#if EV_USE_INOTIFY
387# include <sys/statfs.h>
231# include <sys/inotify.h> 388# include <sys/inotify.h>
389/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
390# ifndef IN_DONT_FOLLOW
391# undef EV_USE_INOTIFY
392# define EV_USE_INOTIFY 0
393# endif
232#endif 394#endif
233 395
234#if EV_SELECT_IS_WINSOCKET 396#if EV_SELECT_IS_WINSOCKET
235# include <winsock.h> 397# include <winsock.h>
236#endif 398#endif
237 399
400#if EV_USE_EVENTFD
401/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
402# include <stdint.h>
403# ifndef EFD_NONBLOCK
404# define EFD_NONBLOCK O_NONBLOCK
405# endif
406# ifndef EFD_CLOEXEC
407# ifdef O_CLOEXEC
408# define EFD_CLOEXEC O_CLOEXEC
409# else
410# define EFD_CLOEXEC 02000000
411# endif
412# endif
413EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
414#endif
415
416#if EV_USE_SIGNALFD
417/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
418# include <stdint.h>
419# ifndef SFD_NONBLOCK
420# define SFD_NONBLOCK O_NONBLOCK
421# endif
422# ifndef SFD_CLOEXEC
423# ifdef O_CLOEXEC
424# define SFD_CLOEXEC O_CLOEXEC
425# else
426# define SFD_CLOEXEC 02000000
427# endif
428# endif
429EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
430
431struct signalfd_siginfo
432{
433 uint32_t ssi_signo;
434 char pad[128 - sizeof (uint32_t)];
435};
436#endif
437
238/**/ 438/**/
439
440#if EV_VERIFY >= 3
441# define EV_FREQUENT_CHECK ev_verify (EV_A)
442#else
443# define EV_FREQUENT_CHECK do { } while (0)
444#endif
239 445
240/* 446/*
241 * This is used to avoid floating point rounding problems. 447 * This is used to avoid floating point rounding problems.
242 * It is added to ev_rt_now when scheduling periodics 448 * It is added to ev_rt_now when scheduling periodics
243 * to ensure progress, time-wise, even when rounding 449 * to ensure progress, time-wise, even when rounding
… …
247 */ 453 */
248#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 454#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
249 455
250#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 456#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
251#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 457#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
252/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */ 458
459#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
460#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
253 461
254#if __GNUC__ >= 4 462#if __GNUC__ >= 4
255# define expect(expr,value) __builtin_expect ((expr),(value)) 463# define expect(expr,value) __builtin_expect ((expr),(value))
256# define noinline __attribute__ ((noinline)) 464# define noinline __attribute__ ((noinline))
257#else 465#else
258# define expect(expr,value) (expr) 466# define expect(expr,value) (expr)
259# define noinline 467# define noinline
260# if __STDC_VERSION__ < 199901L 468# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
261# define inline 469# define inline
262# endif 470# endif
263#endif 471#endif
264 472
265#define expect_false(expr) expect ((expr) != 0, 0) 473#define expect_false(expr) expect ((expr) != 0, 0)
266#define expect_true(expr) expect ((expr) != 0, 1) 474#define expect_true(expr) expect ((expr) != 0, 1)
267#define inline_size static inline 475#define inline_size static inline
268 476
269#if EV_MINIMAL 477#if EV_FEATURE_CODE
478# define inline_speed static inline
479#else
270# define inline_speed static noinline 480# define inline_speed static noinline
481#endif
482
483#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
484
485#if EV_MINPRI == EV_MAXPRI
486# define ABSPRI(w) (((W)w), 0)
271#else 487#else
272# define inline_speed static inline
273#endif
274
275#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
276#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 488# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
489#endif
277 490
278#define EMPTY /* required for microsofts broken pseudo-c compiler */ 491#define EMPTY /* required for microsofts broken pseudo-c compiler */
279#define EMPTY2(a,b) /* used to suppress some warnings */ 492#define EMPTY2(a,b) /* used to suppress some warnings */
280 493
281typedef ev_watcher *W; 494typedef ev_watcher *W;
282typedef ev_watcher_list *WL; 495typedef ev_watcher_list *WL;
283typedef ev_watcher_time *WT; 496typedef ev_watcher_time *WT;
284 497
498#define ev_active(w) ((W)(w))->active
499#define ev_at(w) ((WT)(w))->at
500
501#if EV_USE_REALTIME
502/* sig_atomic_t is used to avoid per-thread variables or locking but still */
503/* giving it a reasonably high chance of working on typical architectures */
504static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
505#endif
506
285#if EV_USE_MONOTONIC 507#if EV_USE_MONOTONIC
286/* sig_atomic_t is used to avoid per-thread variables or locking but still */
287/* giving it a reasonably high chance of working on typical architetcures */
288static sig_atomic_t have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 508static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
509#endif
510
511#ifndef EV_FD_TO_WIN32_HANDLE
512# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
513#endif
514#ifndef EV_WIN32_HANDLE_TO_FD
515# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
516#endif
517#ifndef EV_WIN32_CLOSE_FD
518# define EV_WIN32_CLOSE_FD(fd) close (fd)
289#endif 519#endif
290 520
291#ifdef _WIN32 521#ifdef _WIN32
292# include "ev_win32.c" 522# include "ev_win32.c"
293#endif 523#endif
294 524
295/*****************************************************************************/ 525/*****************************************************************************/
296 526
527#ifdef __linux
528# include <sys/utsname.h>
529#endif
530
531static unsigned int noinline
532ev_linux_version (void)
533{
534#ifdef __linux
535 unsigned int v = 0;
536 struct utsname buf;
537 int i;
538 char *p = buf.release;
539
540 if (uname (&buf))
541 return 0;
542
543 for (i = 3+1; --i; )
544 {
545 unsigned int c = 0;
546
547 for (;;)
548 {
549 if (*p >= '0' && *p <= '9')
550 c = c * 10 + *p++ - '0';
551 else
552 {
553 p += *p == '.';
554 break;
555 }
556 }
557
558 v = (v << 8) | c;
559 }
560
561 return v;
562#else
563 return 0;
564#endif
565}
566
567/*****************************************************************************/
568
569#if EV_AVOID_STDIO
570static void noinline
571ev_printerr (const char *msg)
572{
573 write (STDERR_FILENO, msg, strlen (msg));
574}
575#endif
576
297static void (*syserr_cb)(const char *msg); 577static void (*syserr_cb)(const char *msg);
298 578
299void 579void
300ev_set_syserr_cb (void (*cb)(const char *msg)) 580ev_set_syserr_cb (void (*cb)(const char *msg))
301{ 581{
302 syserr_cb = cb; 582 syserr_cb = cb;
303} 583}
304 584
305static void noinline 585static void noinline
306syserr (const char *msg) 586ev_syserr (const char *msg)
307{ 587{
308 if (!msg) 588 if (!msg)
309 msg = "(libev) system error"; 589 msg = "(libev) system error";
310 590
311 if (syserr_cb) 591 if (syserr_cb)
312 syserr_cb (msg); 592 syserr_cb (msg);
313 else 593 else
314 { 594 {
595#if EV_AVOID_STDIO
596 const char *err = strerror (errno);
597
598 ev_printerr (msg);
599 ev_printerr (": ");
600 ev_printerr (err);
601 ev_printerr ("\n");
602#else
315 perror (msg); 603 perror (msg);
604#endif
316 abort (); 605 abort ();
317 } 606 }
318} 607}
319 608
609static void *
610ev_realloc_emul (void *ptr, long size)
611{
612#if __GLIBC__
613 return realloc (ptr, size);
614#else
615 /* some systems, notably openbsd and darwin, fail to properly
616 * implement realloc (x, 0) (as required by both ansi c-89 and
617 * the single unix specification, so work around them here.
618 */
619
620 if (size)
621 return realloc (ptr, size);
622
623 free (ptr);
624 return 0;
625#endif
626}
627
320static void *(*alloc)(void *ptr, long size); 628static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
321 629
322void 630void
323ev_set_allocator (void *(*cb)(void *ptr, long size)) 631ev_set_allocator (void *(*cb)(void *ptr, long size))
324{ 632{
325 alloc = cb; 633 alloc = cb;
326} 634}
327 635
328inline_speed void * 636inline_speed void *
329ev_realloc (void *ptr, long size) 637ev_realloc (void *ptr, long size)
330{ 638{
331 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); 639 ptr = alloc (ptr, size);
332 640
333 if (!ptr && size) 641 if (!ptr && size)
334 { 642 {
643#if EV_AVOID_STDIO
644 ev_printerr ("libev: memory allocation failed, aborting.\n");
645#else
335 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 646 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
647#endif
336 abort (); 648 abort ();
337 } 649 }
338 650
339 return ptr; 651 return ptr;
340} 652}
… …
342#define ev_malloc(size) ev_realloc (0, (size)) 654#define ev_malloc(size) ev_realloc (0, (size))
343#define ev_free(ptr) ev_realloc ((ptr), 0) 655#define ev_free(ptr) ev_realloc ((ptr), 0)
344 656
345/*****************************************************************************/ 657/*****************************************************************************/
346 658
659/* set in reify when reification needed */
660#define EV_ANFD_REIFY 1
661
662/* file descriptor info structure */
347typedef struct 663typedef struct
348{ 664{
349 WL head; 665 WL head;
350 unsigned char events; 666 unsigned char events; /* the events watched for */
667 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
668 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
351 unsigned char reify; 669 unsigned char unused;
670#if EV_USE_EPOLL
671 unsigned int egen; /* generation counter to counter epoll bugs */
672#endif
352#if EV_SELECT_IS_WINSOCKET 673#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
353 SOCKET handle; 674 SOCKET handle;
354#endif 675#endif
676#if EV_USE_IOCP
677 OVERLAPPED or, ow;
678#endif
355} ANFD; 679} ANFD;
356 680
681/* stores the pending event set for a given watcher */
357typedef struct 682typedef struct
358{ 683{
359 W w; 684 W w;
360 int events; 685 int events; /* the pending event set for the given watcher */
361} ANPENDING; 686} ANPENDING;
362 687
363#if EV_USE_INOTIFY 688#if EV_USE_INOTIFY
689/* hash table entry per inotify-id */
364typedef struct 690typedef struct
365{ 691{
366 WL head; 692 WL head;
367} ANFS; 693} ANFS;
694#endif
695
696/* Heap Entry */
697#if EV_HEAP_CACHE_AT
698 /* a heap element */
699 typedef struct {
700 ev_tstamp at;
701 WT w;
702 } ANHE;
703
704 #define ANHE_w(he) (he).w /* access watcher, read-write */
705 #define ANHE_at(he) (he).at /* access cached at, read-only */
706 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
707#else
708 /* a heap element */
709 typedef WT ANHE;
710
711 #define ANHE_w(he) (he)
712 #define ANHE_at(he) (he)->at
713 #define ANHE_at_cache(he)
368#endif 714#endif
369 715
370#if EV_MULTIPLICITY 716#if EV_MULTIPLICITY
371 717
372 struct ev_loop 718 struct ev_loop
… …
391 737
392 static int ev_default_loop_ptr; 738 static int ev_default_loop_ptr;
393 739
394#endif 740#endif
395 741
742#if EV_FEATURE_API
743# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
744# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
745# define EV_INVOKE_PENDING invoke_cb (EV_A)
746#else
747# define EV_RELEASE_CB (void)0
748# define EV_ACQUIRE_CB (void)0
749# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
750#endif
751
752#define EVBREAK_RECURSE 0x80
753
396/*****************************************************************************/ 754/*****************************************************************************/
397 755
756#ifndef EV_HAVE_EV_TIME
398ev_tstamp 757ev_tstamp
399ev_time (void) 758ev_time (void)
400{ 759{
401#if EV_USE_REALTIME 760#if EV_USE_REALTIME
761 if (expect_true (have_realtime))
762 {
402 struct timespec ts; 763 struct timespec ts;
403 clock_gettime (CLOCK_REALTIME, &ts); 764 clock_gettime (CLOCK_REALTIME, &ts);
404 return ts.tv_sec + ts.tv_nsec * 1e-9; 765 return ts.tv_sec + ts.tv_nsec * 1e-9;
405#else 766 }
767#endif
768
406 struct timeval tv; 769 struct timeval tv;
407 gettimeofday (&tv, 0); 770 gettimeofday (&tv, 0);
408 return tv.tv_sec + tv.tv_usec * 1e-6; 771 return tv.tv_sec + tv.tv_usec * 1e-6;
409#endif
410} 772}
773#endif
411 774
412ev_tstamp inline_size 775inline_size ev_tstamp
413get_clock (void) 776get_clock (void)
414{ 777{
415#if EV_USE_MONOTONIC 778#if EV_USE_MONOTONIC
416 if (expect_true (have_monotonic)) 779 if (expect_true (have_monotonic))
417 { 780 {
… …
438 if (delay > 0.) 801 if (delay > 0.)
439 { 802 {
440#if EV_USE_NANOSLEEP 803#if EV_USE_NANOSLEEP
441 struct timespec ts; 804 struct timespec ts;
442 805
443 ts.tv_sec = (time_t)delay; 806 EV_TS_SET (ts, delay);
444 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
445
446 nanosleep (&ts, 0); 807 nanosleep (&ts, 0);
447#elif defined(_WIN32) 808#elif defined(_WIN32)
448 Sleep (delay * 1e3); 809 Sleep ((unsigned long)(delay * 1e3));
449#else 810#else
450 struct timeval tv; 811 struct timeval tv;
451 812
452 tv.tv_sec = (time_t)delay; 813 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
453 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); 814 /* something not guaranteed by newer posix versions, but guaranteed */
454 815 /* by older ones */
816 EV_TV_SET (tv, delay);
455 select (0, 0, 0, 0, &tv); 817 select (0, 0, 0, 0, &tv);
456#endif 818#endif
457 } 819 }
458} 820}
459 821
460/*****************************************************************************/ 822/*****************************************************************************/
461 823
462int inline_size 824#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
825
826/* find a suitable new size for the given array, */
827/* hopefully by rounding to a nice-to-malloc size */
828inline_size int
463array_nextsize (int elem, int cur, int cnt) 829array_nextsize (int elem, int cur, int cnt)
464{ 830{
465 int ncur = cur + 1; 831 int ncur = cur + 1;
466 832
467 do 833 do
468 ncur <<= 1; 834 ncur <<= 1;
469 while (cnt > ncur); 835 while (cnt > ncur);
470 836
471 /* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */ 837 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */
472 if (elem * ncur > 4096) 838 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
473 { 839 {
474 ncur *= elem; 840 ncur *= elem;
475 ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095; 841 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
476 ncur = ncur - sizeof (void *) * 4; 842 ncur = ncur - sizeof (void *) * 4;
477 ncur /= elem; 843 ncur /= elem;
478 } 844 }
479 845
480 return ncur; 846 return ncur;
… …
484array_realloc (int elem, void *base, int *cur, int cnt) 850array_realloc (int elem, void *base, int *cur, int cnt)
485{ 851{
486 *cur = array_nextsize (elem, *cur, cnt); 852 *cur = array_nextsize (elem, *cur, cnt);
487 return ev_realloc (base, elem * *cur); 853 return ev_realloc (base, elem * *cur);
488} 854}
855
856#define array_init_zero(base,count) \
857 memset ((void *)(base), 0, sizeof (*(base)) * (count))
489 858
490#define array_needsize(type,base,cur,cnt,init) \ 859#define array_needsize(type,base,cur,cnt,init) \
491 if (expect_false ((cnt) > (cur))) \ 860 if (expect_false ((cnt) > (cur))) \
492 { \ 861 { \
493 int ocur_ = (cur); \ 862 int ocur_ = (cur); \
… …
505 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 874 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
506 } 875 }
507#endif 876#endif
508 877
509#define array_free(stem, idx) \ 878#define array_free(stem, idx) \
510 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 879 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
511 880
512/*****************************************************************************/ 881/*****************************************************************************/
882
883/* dummy callback for pending events */
884static void noinline
885pendingcb (EV_P_ ev_prepare *w, int revents)
886{
887}
513 888
514void noinline 889void noinline
515ev_feed_event (EV_P_ void *w, int revents) 890ev_feed_event (EV_P_ void *w, int revents)
516{ 891{
517 W w_ = (W)w; 892 W w_ = (W)w;
… …
526 pendings [pri][w_->pending - 1].w = w_; 901 pendings [pri][w_->pending - 1].w = w_;
527 pendings [pri][w_->pending - 1].events = revents; 902 pendings [pri][w_->pending - 1].events = revents;
528 } 903 }
529} 904}
530 905
531void inline_speed 906inline_speed void
907feed_reverse (EV_P_ W w)
908{
909 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
910 rfeeds [rfeedcnt++] = w;
911}
912
913inline_size void
914feed_reverse_done (EV_P_ int revents)
915{
916 do
917 ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
918 while (rfeedcnt);
919}
920
921inline_speed void
532queue_events (EV_P_ W *events, int eventcnt, int type) 922queue_events (EV_P_ W *events, int eventcnt, int type)
533{ 923{
534 int i; 924 int i;
535 925
536 for (i = 0; i < eventcnt; ++i) 926 for (i = 0; i < eventcnt; ++i)
537 ev_feed_event (EV_A_ events [i], type); 927 ev_feed_event (EV_A_ events [i], type);
538} 928}
539 929
540/*****************************************************************************/ 930/*****************************************************************************/
541 931
542void inline_size 932inline_speed void
543anfds_init (ANFD *base, int count)
544{
545 while (count--)
546 {
547 base->head = 0;
548 base->events = EV_NONE;
549 base->reify = 0;
550
551 ++base;
552 }
553}
554
555void inline_speed
556fd_event (EV_P_ int fd, int revents) 933fd_event_nocheck (EV_P_ int fd, int revents)
557{ 934{
558 ANFD *anfd = anfds + fd; 935 ANFD *anfd = anfds + fd;
559 ev_io *w; 936 ev_io *w;
560 937
561 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 938 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
565 if (ev) 942 if (ev)
566 ev_feed_event (EV_A_ (W)w, ev); 943 ev_feed_event (EV_A_ (W)w, ev);
567 } 944 }
568} 945}
569 946
947/* do not submit kernel events for fds that have reify set */
948/* because that means they changed while we were polling for new events */
949inline_speed void
950fd_event (EV_P_ int fd, int revents)
951{
952 ANFD *anfd = anfds + fd;
953
954 if (expect_true (!anfd->reify))
955 fd_event_nocheck (EV_A_ fd, revents);
956}
957
570void 958void
571ev_feed_fd_event (EV_P_ int fd, int revents) 959ev_feed_fd_event (EV_P_ int fd, int revents)
572{ 960{
573 if (fd >= 0 && fd < anfdmax) 961 if (fd >= 0 && fd < anfdmax)
574 fd_event (EV_A_ fd, revents); 962 fd_event_nocheck (EV_A_ fd, revents);
575} 963}
576 964
577void inline_size 965/* make sure the external fd watch events are in-sync */
966/* with the kernel/libev internal state */
967inline_size void
578fd_reify (EV_P) 968fd_reify (EV_P)
579{ 969{
580 int i; 970 int i;
581 971
582 for (i = 0; i < fdchangecnt; ++i) 972 for (i = 0; i < fdchangecnt; ++i)
583 { 973 {
584 int fd = fdchanges [i]; 974 int fd = fdchanges [i];
585 ANFD *anfd = anfds + fd; 975 ANFD *anfd = anfds + fd;
586 ev_io *w; 976 ev_io *w;
587 977
588 unsigned char events = 0; 978 unsigned char o_events = anfd->events;
979 unsigned char o_reify = anfd->reify;
589 980
590 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 981 anfd->reify = 0;
591 events |= (unsigned char)w->events;
592 982
593#if EV_SELECT_IS_WINSOCKET 983#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
594 if (events) 984 if (o_reify & EV__IOFDSET)
595 { 985 {
596 unsigned long argp; 986 unsigned long arg;
597 anfd->handle = _get_osfhandle (fd); 987 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
598 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); 988 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
989 printf ("oi %d %x\n", fd, anfd->handle);//D
599 } 990 }
600#endif 991#endif
601 992
993 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
602 { 994 {
603 unsigned char o_events = anfd->events;
604 unsigned char o_reify = anfd->reify;
605
606 anfd->reify = 0;
607 anfd->events = events; 995 anfd->events = 0;
608 996
609 if (o_events != events || o_reify & EV_IOFDSET) 997 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
998 anfd->events |= (unsigned char)w->events;
999
1000 if (o_events != anfd->events)
1001 o_reify = EV__IOFDSET; /* actually |= */
1002 }
1003
1004 if (o_reify & EV__IOFDSET)
610 backend_modify (EV_A_ fd, o_events, events); 1005 backend_modify (EV_A_ fd, o_events, anfd->events);
611 }
612 } 1006 }
613 1007
614 fdchangecnt = 0; 1008 fdchangecnt = 0;
615} 1009}
616 1010
617void inline_size 1011/* something about the given fd changed */
1012inline_size void
618fd_change (EV_P_ int fd, int flags) 1013fd_change (EV_P_ int fd, int flags)
619{ 1014{
620 unsigned char reify = anfds [fd].reify; 1015 unsigned char reify = anfds [fd].reify;
621 anfds [fd].reify |= flags; 1016 anfds [fd].reify |= flags;
622 1017
… …
626 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 1021 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
627 fdchanges [fdchangecnt - 1] = fd; 1022 fdchanges [fdchangecnt - 1] = fd;
628 } 1023 }
629} 1024}
630 1025
631void inline_speed 1026/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1027inline_speed void
632fd_kill (EV_P_ int fd) 1028fd_kill (EV_P_ int fd)
633{ 1029{
634 ev_io *w; 1030 ev_io *w;
635 1031
636 while ((w = (ev_io *)anfds [fd].head)) 1032 while ((w = (ev_io *)anfds [fd].head))
… …
638 ev_io_stop (EV_A_ w); 1034 ev_io_stop (EV_A_ w);
639 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1035 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
640 } 1036 }
641} 1037}
642 1038
643int inline_size 1039/* check whether the given fd is actually valid, for error recovery */
1040inline_size int
644fd_valid (int fd) 1041fd_valid (int fd)
645{ 1042{
646#ifdef _WIN32 1043#ifdef _WIN32
647 return _get_osfhandle (fd) != -1; 1044 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
648#else 1045#else
649 return fcntl (fd, F_GETFD) != -1; 1046 return fcntl (fd, F_GETFD) != -1;
650#endif 1047#endif
651} 1048}
652 1049
… …
656{ 1053{
657 int fd; 1054 int fd;
658 1055
659 for (fd = 0; fd < anfdmax; ++fd) 1056 for (fd = 0; fd < anfdmax; ++fd)
660 if (anfds [fd].events) 1057 if (anfds [fd].events)
661 if (!fd_valid (fd) == -1 && errno == EBADF) 1058 if (!fd_valid (fd) && errno == EBADF)
662 fd_kill (EV_A_ fd); 1059 fd_kill (EV_A_ fd);
663} 1060}
664 1061
665/* called on ENOMEM in select/poll to kill some fds and retry */ 1062/* called on ENOMEM in select/poll to kill some fds and retry */
666static void noinline 1063static void noinline
… …
670 1067
671 for (fd = anfdmax; fd--; ) 1068 for (fd = anfdmax; fd--; )
672 if (anfds [fd].events) 1069 if (anfds [fd].events)
673 { 1070 {
674 fd_kill (EV_A_ fd); 1071 fd_kill (EV_A_ fd);
675 return; 1072 break;
676 } 1073 }
677} 1074}
678 1075
679/* usually called after fork if backend needs to re-arm all fds from scratch */ 1076/* usually called after fork if backend needs to re-arm all fds from scratch */
680static void noinline 1077static void noinline
… …
684 1081
685 for (fd = 0; fd < anfdmax; ++fd) 1082 for (fd = 0; fd < anfdmax; ++fd)
686 if (anfds [fd].events) 1083 if (anfds [fd].events)
687 { 1084 {
688 anfds [fd].events = 0; 1085 anfds [fd].events = 0;
1086 anfds [fd].emask = 0;
689 fd_change (EV_A_ fd, EV_IOFDSET | 1); 1087 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
690 } 1088 }
691} 1089}
692 1090
693/*****************************************************************************/ 1091/* used to prepare libev internal fd's */
694 1092/* this is not fork-safe */
695void inline_speed 1093inline_speed void
696upheap (WT *heap, int k)
697{
698 WT w = heap [k];
699
700 while (k)
701 {
702 int p = (k - 1) >> 1;
703
704 if (heap [p]->at <= w->at)
705 break;
706
707 heap [k] = heap [p];
708 ((W)heap [k])->active = k + 1;
709 k = p;
710 }
711
712 heap [k] = w;
713 ((W)heap [k])->active = k + 1;
714}
715
716void inline_speed
717downheap (WT *heap, int N, int k)
718{
719 WT w = heap [k];
720
721 for (;;)
722 {
723 int c = (k << 1) + 1;
724
725 if (c >= N)
726 break;
727
728 c += c + 1 < N && heap [c]->at > heap [c + 1]->at
729 ? 1 : 0;
730
731 if (w->at <= heap [c]->at)
732 break;
733
734 heap [k] = heap [c];
735 ((W)heap [k])->active = k + 1;
736
737 k = c;
738 }
739
740 heap [k] = w;
741 ((W)heap [k])->active = k + 1;
742}
743
744void inline_size
745adjustheap (WT *heap, int N, int k)
746{
747 upheap (heap, k);
748 downheap (heap, N, k);
749}
750
751/*****************************************************************************/
752
753typedef struct
754{
755 WL head;
756 sig_atomic_t volatile gotsig;
757} ANSIG;
758
759static ANSIG *signals;
760static int signalmax;
761
762static int sigpipe [2];
763static sig_atomic_t volatile gotsig;
764static ev_io sigev;
765
766void inline_size
767signals_init (ANSIG *base, int count)
768{
769 while (count--)
770 {
771 base->head = 0;
772 base->gotsig = 0;
773
774 ++base;
775 }
776}
777
778static void
779sighandler (int signum)
780{
781#if _WIN32
782 signal (signum, sighandler);
783#endif
784
785 signals [signum - 1].gotsig = 1;
786
787 if (!gotsig)
788 {
789 int old_errno = errno;
790 gotsig = 1;
791 write (sigpipe [1], &signum, 1);
792 errno = old_errno;
793 }
794}
795
796void noinline
797ev_feed_signal_event (EV_P_ int signum)
798{
799 WL w;
800
801#if EV_MULTIPLICITY
802 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
803#endif
804
805 --signum;
806
807 if (signum < 0 || signum >= signalmax)
808 return;
809
810 signals [signum].gotsig = 0;
811
812 for (w = signals [signum].head; w; w = w->next)
813 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
814}
815
816static void
817sigcb (EV_P_ ev_io *iow, int revents)
818{
819 int signum;
820
821 read (sigpipe [0], &revents, 1);
822 gotsig = 0;
823
824 for (signum = signalmax; signum--; )
825 if (signals [signum].gotsig)
826 ev_feed_signal_event (EV_A_ signum + 1);
827}
828
829void inline_speed
830fd_intern (int fd) 1094fd_intern (int fd)
831{ 1095{
832#ifdef _WIN32 1096#ifdef _WIN32
833 int arg = 1; 1097 unsigned long arg = 1;
834 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 1098 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
835#else 1099#else
836 fcntl (fd, F_SETFD, FD_CLOEXEC); 1100 fcntl (fd, F_SETFD, FD_CLOEXEC);
837 fcntl (fd, F_SETFL, O_NONBLOCK); 1101 fcntl (fd, F_SETFL, O_NONBLOCK);
838#endif 1102#endif
839} 1103}
840 1104
1105/*****************************************************************************/
1106
1107/*
1108 * the heap functions want a real array index. array index 0 is guaranteed to not
1109 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
1110 * the branching factor of the d-tree.
1111 */
1112
1113/*
1114 * at the moment we allow libev the luxury of two heaps,
1115 * a small-code-size 2-heap one and a ~1.5kb larger 4-heap
1116 * which is more cache-efficient.
1117 * the difference is about 5% with 50000+ watchers.
1118 */
1119#if EV_USE_4HEAP
1120
1121#define DHEAP 4
1122#define HEAP0 (DHEAP - 1) /* index of first element in heap */
1123#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
1124#define UPHEAP_DONE(p,k) ((p) == (k))
1125
1126/* away from the root */
1127inline_speed void
1128downheap (ANHE *heap, int N, int k)
1129{
1130 ANHE he = heap [k];
1131 ANHE *E = heap + N + HEAP0;
1132
1133 for (;;)
1134 {
1135 ev_tstamp minat;
1136 ANHE *minpos;
1137 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
1138
1139 /* find minimum child */
1140 if (expect_true (pos + DHEAP - 1 < E))
1141 {
1142 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1143 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1144 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1145 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1146 }
1147 else if (pos < E)
1148 {
1149 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1150 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1151 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1152 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1153 }
1154 else
1155 break;
1156
1157 if (ANHE_at (he) <= minat)
1158 break;
1159
1160 heap [k] = *minpos;
1161 ev_active (ANHE_w (*minpos)) = k;
1162
1163 k = minpos - heap;
1164 }
1165
1166 heap [k] = he;
1167 ev_active (ANHE_w (he)) = k;
1168}
1169
1170#else /* 4HEAP */
1171
1172#define HEAP0 1
1173#define HPARENT(k) ((k) >> 1)
1174#define UPHEAP_DONE(p,k) (!(p))
1175
1176/* away from the root */
1177inline_speed void
1178downheap (ANHE *heap, int N, int k)
1179{
1180 ANHE he = heap [k];
1181
1182 for (;;)
1183 {
1184 int c = k << 1;
1185
1186 if (c >= N + HEAP0)
1187 break;
1188
1189 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
1190 ? 1 : 0;
1191
1192 if (ANHE_at (he) <= ANHE_at (heap [c]))
1193 break;
1194
1195 heap [k] = heap [c];
1196 ev_active (ANHE_w (heap [k])) = k;
1197
1198 k = c;
1199 }
1200
1201 heap [k] = he;
1202 ev_active (ANHE_w (he)) = k;
1203}
1204#endif
1205
1206/* towards the root */
1207inline_speed void
1208upheap (ANHE *heap, int k)
1209{
1210 ANHE he = heap [k];
1211
1212 for (;;)
1213 {
1214 int p = HPARENT (k);
1215
1216 if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
1217 break;
1218
1219 heap [k] = heap [p];
1220 ev_active (ANHE_w (heap [k])) = k;
1221 k = p;
1222 }
1223
1224 heap [k] = he;
1225 ev_active (ANHE_w (he)) = k;
1226}
1227
1228/* move an element suitably so it is in a correct place */
1229inline_size void
1230adjustheap (ANHE *heap, int N, int k)
1231{
1232 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1233 upheap (heap, k);
1234 else
1235 downheap (heap, N, k);
1236}
1237
1238/* rebuild the heap: this function is used only once and executed rarely */
1239inline_size void
1240reheap (ANHE *heap, int N)
1241{
1242 int i;
1243
1244 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
1245 /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
1246 for (i = 0; i < N; ++i)
1247 upheap (heap, i + HEAP0);
1248}
1249
1250/*****************************************************************************/
1251
1252/* associate signal watchers to a signal signal */
1253typedef struct
1254{
1255 EV_ATOMIC_T pending;
1256#if EV_MULTIPLICITY
1257 EV_P;
1258#endif
1259 WL head;
1260} ANSIG;
1261
1262static ANSIG signals [EV_NSIG - 1];
1263
1264/*****************************************************************************/
1265
1266#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1267
841static void noinline 1268static void noinline
842siginit (EV_P) 1269evpipe_init (EV_P)
843{ 1270{
1271 if (!ev_is_active (&pipe_w))
1272 {
1273# if EV_USE_EVENTFD
1274 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1275 if (evfd < 0 && errno == EINVAL)
1276 evfd = eventfd (0, 0);
1277
1278 if (evfd >= 0)
1279 {
1280 evpipe [0] = -1;
1281 fd_intern (evfd); /* doing it twice doesn't hurt */
1282 ev_io_set (&pipe_w, evfd, EV_READ);
1283 }
1284 else
1285# endif
1286 {
1287 while (pipe (evpipe))
1288 ev_syserr ("(libev) error creating signal/async pipe");
1289
844 fd_intern (sigpipe [0]); 1290 fd_intern (evpipe [0]);
845 fd_intern (sigpipe [1]); 1291 fd_intern (evpipe [1]);
1292 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1293 }
846 1294
847 ev_io_set (&sigev, sigpipe [0], EV_READ);
848 ev_io_start (EV_A_ &sigev); 1295 ev_io_start (EV_A_ &pipe_w);
849 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1296 ev_unref (EV_A); /* watcher should not keep loop alive */
1297 }
1298}
1299
1300inline_size void
1301evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1302{
1303 if (!*flag)
1304 {
1305 int old_errno = errno; /* save errno because write might clobber it */
1306 char dummy;
1307
1308 *flag = 1;
1309
1310#if EV_USE_EVENTFD
1311 if (evfd >= 0)
1312 {
1313 uint64_t counter = 1;
1314 write (evfd, &counter, sizeof (uint64_t));
1315 }
1316 else
1317#endif
1318 /* win32 people keep sending patches that change this write() to send() */
1319 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1320 /* so when you think this write should be a send instead, please find out */
1321 /* where your send() is from - it's definitely not the microsoft send, and */
1322 /* tell me. thank you. */
1323 write (evpipe [1], &dummy, 1);
1324
1325 errno = old_errno;
1326 }
1327}
1328
1329/* called whenever the libev signal pipe */
1330/* got some events (signal, async) */
1331static void
1332pipecb (EV_P_ ev_io *iow, int revents)
1333{
1334 int i;
1335
1336#if EV_USE_EVENTFD
1337 if (evfd >= 0)
1338 {
1339 uint64_t counter;
1340 read (evfd, &counter, sizeof (uint64_t));
1341 }
1342 else
1343#endif
1344 {
1345 char dummy;
1346 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1347 read (evpipe [0], &dummy, 1);
1348 }
1349
1350 if (sig_pending)
1351 {
1352 sig_pending = 0;
1353
1354 for (i = EV_NSIG - 1; i--; )
1355 if (expect_false (signals [i].pending))
1356 ev_feed_signal_event (EV_A_ i + 1);
1357 }
1358
1359#if EV_ASYNC_ENABLE
1360 if (async_pending)
1361 {
1362 async_pending = 0;
1363
1364 for (i = asynccnt; i--; )
1365 if (asyncs [i]->sent)
1366 {
1367 asyncs [i]->sent = 0;
1368 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1369 }
1370 }
1371#endif
850} 1372}
851 1373
852/*****************************************************************************/ 1374/*****************************************************************************/
853 1375
1376static void
1377ev_sighandler (int signum)
1378{
1379#if EV_MULTIPLICITY
1380 EV_P = signals [signum - 1].loop;
1381#endif
1382
1383#ifdef _WIN32
1384 signal (signum, ev_sighandler);
1385#endif
1386
1387 signals [signum - 1].pending = 1;
1388 evpipe_write (EV_A_ &sig_pending);
1389}
1390
1391void noinline
1392ev_feed_signal_event (EV_P_ int signum)
1393{
1394 WL w;
1395
1396 if (expect_false (signum <= 0 || signum > EV_NSIG))
1397 return;
1398
1399 --signum;
1400
1401#if EV_MULTIPLICITY
1402 /* it is permissible to try to feed a signal to the wrong loop */
1403 /* or, likely more useful, feeding a signal nobody is waiting for */
1404
1405 if (expect_false (signals [signum].loop != EV_A))
1406 return;
1407#endif
1408
1409 signals [signum].pending = 0;
1410
1411 for (w = signals [signum].head; w; w = w->next)
1412 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1413}
1414
1415#if EV_USE_SIGNALFD
1416static void
1417sigfdcb (EV_P_ ev_io *iow, int revents)
1418{
1419 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1420
1421 for (;;)
1422 {
1423 ssize_t res = read (sigfd, si, sizeof (si));
1424
1425 /* not ISO-C, as res might be -1, but works with SuS */
1426 for (sip = si; (char *)sip < (char *)si + res; ++sip)
1427 ev_feed_signal_event (EV_A_ sip->ssi_signo);
1428
1429 if (res < (ssize_t)sizeof (si))
1430 break;
1431 }
1432}
1433#endif
1434
1435#endif
1436
1437/*****************************************************************************/
1438
1439#if EV_CHILD_ENABLE
854static WL childs [EV_PID_HASHSIZE]; 1440static WL childs [EV_PID_HASHSIZE];
855 1441
856#ifndef _WIN32
857
858static ev_signal childev; 1442static ev_signal childev;
859 1443
860void inline_speed 1444#ifndef WIFCONTINUED
1445# define WIFCONTINUED(status) 0
1446#endif
1447
1448/* handle a single child status event */
1449inline_speed void
861child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status) 1450child_reap (EV_P_ int chain, int pid, int status)
862{ 1451{
863 ev_child *w; 1452 ev_child *w;
1453 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
864 1454
865 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1455 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1456 {
866 if (w->pid == pid || !w->pid) 1457 if ((w->pid == pid || !w->pid)
1458 && (!traced || (w->flags & 1)))
867 { 1459 {
868 ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */ 1460 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
869 w->rpid = pid; 1461 w->rpid = pid;
870 w->rstatus = status; 1462 w->rstatus = status;
871 ev_feed_event (EV_A_ (W)w, EV_CHILD); 1463 ev_feed_event (EV_A_ (W)w, EV_CHILD);
872 } 1464 }
1465 }
873} 1466}
874 1467
875#ifndef WCONTINUED 1468#ifndef WCONTINUED
876# define WCONTINUED 0 1469# define WCONTINUED 0
877#endif 1470#endif
878 1471
1472/* called on sigchld etc., calls waitpid */
879static void 1473static void
880childcb (EV_P_ ev_signal *sw, int revents) 1474childcb (EV_P_ ev_signal *sw, int revents)
881{ 1475{
882 int pid, status; 1476 int pid, status;
883 1477
… …
886 if (!WCONTINUED 1480 if (!WCONTINUED
887 || errno != EINVAL 1481 || errno != EINVAL
888 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED))) 1482 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
889 return; 1483 return;
890 1484
891 /* make sure we are called again until all childs have been reaped */ 1485 /* make sure we are called again until all children have been reaped */
892 /* we need to do it this way so that the callback gets called before we continue */ 1486 /* we need to do it this way so that the callback gets called before we continue */
893 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1487 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
894 1488
895 child_reap (EV_A_ sw, pid, pid, status); 1489 child_reap (EV_A_ pid, pid, status);
896 if (EV_PID_HASHSIZE > 1) 1490 if ((EV_PID_HASHSIZE) > 1)
897 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1491 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
898} 1492}
899 1493
900#endif 1494#endif
901 1495
902/*****************************************************************************/ 1496/*****************************************************************************/
903 1497
1498#if EV_USE_IOCP
1499# include "ev_iocp.c"
1500#endif
904#if EV_USE_PORT 1501#if EV_USE_PORT
905# include "ev_port.c" 1502# include "ev_port.c"
906#endif 1503#endif
907#if EV_USE_KQUEUE 1504#if EV_USE_KQUEUE
908# include "ev_kqueue.c" 1505# include "ev_kqueue.c"
… …
964 /* kqueue is borked on everything but netbsd apparently */ 1561 /* kqueue is borked on everything but netbsd apparently */
965 /* it usually doesn't work correctly on anything but sockets and pipes */ 1562 /* it usually doesn't work correctly on anything but sockets and pipes */
966 flags &= ~EVBACKEND_KQUEUE; 1563 flags &= ~EVBACKEND_KQUEUE;
967#endif 1564#endif
968#ifdef __APPLE__ 1565#ifdef __APPLE__
969 // flags &= ~EVBACKEND_KQUEUE; for documentation 1566 /* only select works correctly on that "unix-certified" platform */
970 flags &= ~EVBACKEND_POLL; 1567 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1568 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1569#endif
1570#ifdef __FreeBSD__
1571 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
971#endif 1572#endif
972 1573
973 return flags; 1574 return flags;
974} 1575}
975 1576
… …
977ev_embeddable_backends (void) 1578ev_embeddable_backends (void)
978{ 1579{
979 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 1580 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
980 1581
981 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 1582 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
982 /* please fix it and tell me how to detect the fix */ 1583 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
983 flags &= ~EVBACKEND_EPOLL; 1584 flags &= ~EVBACKEND_EPOLL;
984 1585
985 return flags; 1586 return flags;
986} 1587}
987 1588
988unsigned int 1589unsigned int
989ev_backend (EV_P) 1590ev_backend (EV_P)
990{ 1591{
991 return backend; 1592 return backend;
992} 1593}
993 1594
1595#if EV_FEATURE_API
994unsigned int 1596unsigned int
995ev_loop_count (EV_P) 1597ev_iteration (EV_P)
996{ 1598{
997 return loop_count; 1599 return loop_count;
998} 1600}
999 1601
1602unsigned int
1603ev_depth (EV_P)
1604{
1605 return loop_depth;
1606}
1607
1000void 1608void
1001ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 1609ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1002{ 1610{
1003 io_blocktime = interval; 1611 io_blocktime = interval;
1004} 1612}
… …
1007ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1615ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1008{ 1616{
1009 timeout_blocktime = interval; 1617 timeout_blocktime = interval;
1010} 1618}
1011 1619
1620void
1621ev_set_userdata (EV_P_ void *data)
1622{
1623 userdata = data;
1624}
1625
1626void *
1627ev_userdata (EV_P)
1628{
1629 return userdata;
1630}
1631
1632void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1633{
1634 invoke_cb = invoke_pending_cb;
1635}
1636
1637void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1638{
1639 release_cb = release;
1640 acquire_cb = acquire;
1641}
1642#endif
1643
1644/* initialise a loop structure, must be zero-initialised */
1012static void noinline 1645static void noinline
1013loop_init (EV_P_ unsigned int flags) 1646loop_init (EV_P_ unsigned int flags)
1014{ 1647{
1015 if (!backend) 1648 if (!backend)
1016 { 1649 {
1650#if EV_USE_REALTIME
1651 if (!have_realtime)
1652 {
1653 struct timespec ts;
1654
1655 if (!clock_gettime (CLOCK_REALTIME, &ts))
1656 have_realtime = 1;
1657 }
1658#endif
1659
1017#if EV_USE_MONOTONIC 1660#if EV_USE_MONOTONIC
1661 if (!have_monotonic)
1018 { 1662 {
1019 struct timespec ts; 1663 struct timespec ts;
1664
1020 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1665 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1021 have_monotonic = 1; 1666 have_monotonic = 1;
1022 } 1667 }
1023#endif 1668#endif
1024
1025 ev_rt_now = ev_time ();
1026 mn_now = get_clock ();
1027 now_floor = mn_now;
1028 rtmn_diff = ev_rt_now - mn_now;
1029
1030 io_blocktime = 0.;
1031 timeout_blocktime = 0.;
1032 1669
1033 /* pid check not overridable via env */ 1670 /* pid check not overridable via env */
1034#ifndef _WIN32 1671#ifndef _WIN32
1035 if (flags & EVFLAG_FORKCHECK) 1672 if (flags & EVFLAG_FORKCHECK)
1036 curpid = getpid (); 1673 curpid = getpid ();
… …
1039 if (!(flags & EVFLAG_NOENV) 1676 if (!(flags & EVFLAG_NOENV)
1040 && !enable_secure () 1677 && !enable_secure ()
1041 && getenv ("LIBEV_FLAGS")) 1678 && getenv ("LIBEV_FLAGS"))
1042 flags = atoi (getenv ("LIBEV_FLAGS")); 1679 flags = atoi (getenv ("LIBEV_FLAGS"));
1043 1680
1681 ev_rt_now = ev_time ();
1682 mn_now = get_clock ();
1683 now_floor = mn_now;
1684 rtmn_diff = ev_rt_now - mn_now;
1685#if EV_FEATURE_API
1686 invoke_cb = ev_invoke_pending;
1687#endif
1688
1689 io_blocktime = 0.;
1690 timeout_blocktime = 0.;
1691 backend = 0;
1692 backend_fd = -1;
1693 sig_pending = 0;
1694#if EV_ASYNC_ENABLE
1695 async_pending = 0;
1696#endif
1697#if EV_USE_INOTIFY
1698 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1699#endif
1700#if EV_USE_SIGNALFD
1701 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1702#endif
1703
1044 if (!(flags & 0x0000ffffUL)) 1704 if (!(flags & 0x0000ffffU))
1045 flags |= ev_recommended_backends (); 1705 flags |= ev_recommended_backends ();
1046 1706
1047 backend = 0;
1048 backend_fd = -1;
1049#if EV_USE_INOTIFY 1707#if EV_USE_IOCP
1050 fs_fd = -2; 1708 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
1051#endif 1709#endif
1052
1053#if EV_USE_PORT 1710#if EV_USE_PORT
1054 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1711 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1055#endif 1712#endif
1056#if EV_USE_KQUEUE 1713#if EV_USE_KQUEUE
1057 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 1714 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1064#endif 1721#endif
1065#if EV_USE_SELECT 1722#if EV_USE_SELECT
1066 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1723 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1067#endif 1724#endif
1068 1725
1726 ev_prepare_init (&pending_w, pendingcb);
1727
1728#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1069 ev_init (&sigev, sigcb); 1729 ev_init (&pipe_w, pipecb);
1070 ev_set_priority (&sigev, EV_MAXPRI); 1730 ev_set_priority (&pipe_w, EV_MAXPRI);
1731#endif
1071 } 1732 }
1072} 1733}
1073 1734
1074static void noinline 1735/* free up a loop structure */
1736void
1075loop_destroy (EV_P) 1737ev_loop_destroy (EV_P)
1076{ 1738{
1077 int i; 1739 int i;
1740
1741#if EV_CHILD_ENABLE
1742 if (ev_is_active (&childev))
1743 {
1744 ev_ref (EV_A); /* child watcher */
1745 ev_signal_stop (EV_A_ &childev);
1746 }
1747#endif
1748
1749 if (ev_is_active (&pipe_w))
1750 {
1751 /*ev_ref (EV_A);*/
1752 /*ev_io_stop (EV_A_ &pipe_w);*/
1753
1754#if EV_USE_EVENTFD
1755 if (evfd >= 0)
1756 close (evfd);
1757#endif
1758
1759 if (evpipe [0] >= 0)
1760 {
1761 EV_WIN32_CLOSE_FD (evpipe [0]);
1762 EV_WIN32_CLOSE_FD (evpipe [1]);
1763 }
1764 }
1765
1766#if EV_USE_SIGNALFD
1767 if (ev_is_active (&sigfd_w))
1768 close (sigfd);
1769#endif
1078 1770
1079#if EV_USE_INOTIFY 1771#if EV_USE_INOTIFY
1080 if (fs_fd >= 0) 1772 if (fs_fd >= 0)
1081 close (fs_fd); 1773 close (fs_fd);
1082#endif 1774#endif
1083 1775
1084 if (backend_fd >= 0) 1776 if (backend_fd >= 0)
1085 close (backend_fd); 1777 close (backend_fd);
1086 1778
1779#if EV_USE_IOCP
1780 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
1781#endif
1087#if EV_USE_PORT 1782#if EV_USE_PORT
1088 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 1783 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1089#endif 1784#endif
1090#if EV_USE_KQUEUE 1785#if EV_USE_KQUEUE
1091 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 1786 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1106#if EV_IDLE_ENABLE 1801#if EV_IDLE_ENABLE
1107 array_free (idle, [i]); 1802 array_free (idle, [i]);
1108#endif 1803#endif
1109 } 1804 }
1110 1805
1111 ev_free (anfds); anfdmax = 0; 1806 ev_free (anfds); anfds = 0; anfdmax = 0;
1112 1807
1113 /* have to use the microsoft-never-gets-it-right macro */ 1808 /* have to use the microsoft-never-gets-it-right macro */
1809 array_free (rfeed, EMPTY);
1114 array_free (fdchange, EMPTY); 1810 array_free (fdchange, EMPTY);
1115 array_free (timer, EMPTY); 1811 array_free (timer, EMPTY);
1116#if EV_PERIODIC_ENABLE 1812#if EV_PERIODIC_ENABLE
1117 array_free (periodic, EMPTY); 1813 array_free (periodic, EMPTY);
1118#endif 1814#endif
1119#if EV_FORK_ENABLE 1815#if EV_FORK_ENABLE
1120 array_free (fork, EMPTY); 1816 array_free (fork, EMPTY);
1121#endif 1817#endif
1818#if EV_CLEANUP_ENABLE
1819 array_free (cleanup, EMPTY);
1820#endif
1122 array_free (prepare, EMPTY); 1821 array_free (prepare, EMPTY);
1123 array_free (check, EMPTY); 1822 array_free (check, EMPTY);
1823#if EV_ASYNC_ENABLE
1824 array_free (async, EMPTY);
1825#endif
1124 1826
1125 backend = 0; 1827 backend = 0;
1126}
1127 1828
1829#if EV_MULTIPLICITY
1830 if (ev_is_default_loop (EV_A))
1831#endif
1832 ev_default_loop_ptr = 0;
1833#if EV_MULTIPLICITY
1834 else
1835 ev_free (EV_A);
1836#endif
1837}
1838
1839#if EV_USE_INOTIFY
1128void inline_size infy_fork (EV_P); 1840inline_size void infy_fork (EV_P);
1841#endif
1129 1842
1130void inline_size 1843inline_size void
1131loop_fork (EV_P) 1844loop_fork (EV_P)
1132{ 1845{
1133#if EV_USE_PORT 1846#if EV_USE_PORT
1134 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1847 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1135#endif 1848#endif
… …
1141#endif 1854#endif
1142#if EV_USE_INOTIFY 1855#if EV_USE_INOTIFY
1143 infy_fork (EV_A); 1856 infy_fork (EV_A);
1144#endif 1857#endif
1145 1858
1146 if (ev_is_active (&sigev)) 1859 if (ev_is_active (&pipe_w))
1147 { 1860 {
1148 /* default loop */ 1861 /* this "locks" the handlers against writing to the pipe */
1862 /* while we modify the fd vars */
1863 sig_pending = 1;
1864#if EV_ASYNC_ENABLE
1865 async_pending = 1;
1866#endif
1149 1867
1150 ev_ref (EV_A); 1868 ev_ref (EV_A);
1151 ev_io_stop (EV_A_ &sigev); 1869 ev_io_stop (EV_A_ &pipe_w);
1152 close (sigpipe [0]);
1153 close (sigpipe [1]);
1154 1870
1155 while (pipe (sigpipe)) 1871#if EV_USE_EVENTFD
1156 syserr ("(libev) error creating pipe"); 1872 if (evfd >= 0)
1873 close (evfd);
1874#endif
1157 1875
1876 if (evpipe [0] >= 0)
1877 {
1878 EV_WIN32_CLOSE_FD (evpipe [0]);
1879 EV_WIN32_CLOSE_FD (evpipe [1]);
1880 }
1881
1882#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1158 siginit (EV_A); 1883 evpipe_init (EV_A);
1884 /* now iterate over everything, in case we missed something */
1885 pipecb (EV_A_ &pipe_w, EV_READ);
1886#endif
1159 } 1887 }
1160 1888
1161 postfork = 0; 1889 postfork = 0;
1162} 1890}
1891
1892#if EV_MULTIPLICITY
1893
1894struct ev_loop *
1895ev_loop_new (unsigned int flags)
1896{
1897 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1898
1899 memset (EV_A, 0, sizeof (struct ev_loop));
1900 loop_init (EV_A_ flags);
1901
1902 if (ev_backend (EV_A))
1903 return EV_A;
1904
1905 ev_free (EV_A);
1906 return 0;
1907}
1908
1909#endif /* multiplicity */
1910
1911#if EV_VERIFY
1912static void noinline
1913verify_watcher (EV_P_ W w)
1914{
1915 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1916
1917 if (w->pending)
1918 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1919}
1920
1921static void noinline
1922verify_heap (EV_P_ ANHE *heap, int N)
1923{
1924 int i;
1925
1926 for (i = HEAP0; i < N + HEAP0; ++i)
1927 {
1928 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1929 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1930 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1931
1932 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1933 }
1934}
1935
1936static void noinline
1937array_verify (EV_P_ W *ws, int cnt)
1938{
1939 while (cnt--)
1940 {
1941 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1942 verify_watcher (EV_A_ ws [cnt]);
1943 }
1944}
1945#endif
1946
1947#if EV_FEATURE_API
1948void
1949ev_verify (EV_P)
1950{
1951#if EV_VERIFY
1952 int i;
1953 WL w;
1954
1955 assert (activecnt >= -1);
1956
1957 assert (fdchangemax >= fdchangecnt);
1958 for (i = 0; i < fdchangecnt; ++i)
1959 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1960
1961 assert (anfdmax >= 0);
1962 for (i = 0; i < anfdmax; ++i)
1963 for (w = anfds [i].head; w; w = w->next)
1964 {
1965 verify_watcher (EV_A_ (W)w);
1966 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1967 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1968 }
1969
1970 assert (timermax >= timercnt);
1971 verify_heap (EV_A_ timers, timercnt);
1972
1973#if EV_PERIODIC_ENABLE
1974 assert (periodicmax >= periodiccnt);
1975 verify_heap (EV_A_ periodics, periodiccnt);
1976#endif
1977
1978 for (i = NUMPRI; i--; )
1979 {
1980 assert (pendingmax [i] >= pendingcnt [i]);
1981#if EV_IDLE_ENABLE
1982 assert (idleall >= 0);
1983 assert (idlemax [i] >= idlecnt [i]);
1984 array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
1985#endif
1986 }
1987
1988#if EV_FORK_ENABLE
1989 assert (forkmax >= forkcnt);
1990 array_verify (EV_A_ (W *)forks, forkcnt);
1991#endif
1992
1993#if EV_CLEANUP_ENABLE
1994 assert (cleanupmax >= cleanupcnt);
1995 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
1996#endif
1997
1998#if EV_ASYNC_ENABLE
1999 assert (asyncmax >= asynccnt);
2000 array_verify (EV_A_ (W *)asyncs, asynccnt);
2001#endif
2002
2003#if EV_PREPARE_ENABLE
2004 assert (preparemax >= preparecnt);
2005 array_verify (EV_A_ (W *)prepares, preparecnt);
2006#endif
2007
2008#if EV_CHECK_ENABLE
2009 assert (checkmax >= checkcnt);
2010 array_verify (EV_A_ (W *)checks, checkcnt);
2011#endif
2012
2013# if 0
2014#if EV_CHILD_ENABLE
2015 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
2016 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2017#endif
2018# endif
2019#endif
2020}
2021#endif
1163 2022
1164#if EV_MULTIPLICITY 2023#if EV_MULTIPLICITY
1165struct ev_loop * 2024struct ev_loop *
1166ev_loop_new (unsigned int flags)
1167{
1168 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1169
1170 memset (loop, 0, sizeof (struct ev_loop));
1171
1172 loop_init (EV_A_ flags);
1173
1174 if (ev_backend (EV_A))
1175 return loop;
1176
1177 return 0;
1178}
1179
1180void
1181ev_loop_destroy (EV_P)
1182{
1183 loop_destroy (EV_A);
1184 ev_free (loop);
1185}
1186
1187void
1188ev_loop_fork (EV_P)
1189{
1190 postfork = 1;
1191}
1192
1193#endif
1194
1195#if EV_MULTIPLICITY
1196struct ev_loop *
1197ev_default_loop_init (unsigned int flags)
1198#else 2025#else
1199int 2026int
2027#endif
1200ev_default_loop (unsigned int flags) 2028ev_default_loop (unsigned int flags)
1201#endif
1202{ 2029{
1203 if (sigpipe [0] == sigpipe [1])
1204 if (pipe (sigpipe))
1205 return 0;
1206
1207 if (!ev_default_loop_ptr) 2030 if (!ev_default_loop_ptr)
1208 { 2031 {
1209#if EV_MULTIPLICITY 2032#if EV_MULTIPLICITY
1210 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2033 EV_P = ev_default_loop_ptr = &default_loop_struct;
1211#else 2034#else
1212 ev_default_loop_ptr = 1; 2035 ev_default_loop_ptr = 1;
1213#endif 2036#endif
1214 2037
1215 loop_init (EV_A_ flags); 2038 loop_init (EV_A_ flags);
1216 2039
1217 if (ev_backend (EV_A)) 2040 if (ev_backend (EV_A))
1218 { 2041 {
1219 siginit (EV_A); 2042#if EV_CHILD_ENABLE
1220
1221#ifndef _WIN32
1222 ev_signal_init (&childev, childcb, SIGCHLD); 2043 ev_signal_init (&childev, childcb, SIGCHLD);
1223 ev_set_priority (&childev, EV_MAXPRI); 2044 ev_set_priority (&childev, EV_MAXPRI);
1224 ev_signal_start (EV_A_ &childev); 2045 ev_signal_start (EV_A_ &childev);
1225 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2046 ev_unref (EV_A); /* child watcher should not keep loop alive */
1226#endif 2047#endif
… …
1231 2052
1232 return ev_default_loop_ptr; 2053 return ev_default_loop_ptr;
1233} 2054}
1234 2055
1235void 2056void
1236ev_default_destroy (void) 2057ev_loop_fork (EV_P)
1237{ 2058{
1238#if EV_MULTIPLICITY 2059 postfork = 1; /* must be in line with ev_default_fork */
1239 struct ev_loop *loop = ev_default_loop_ptr;
1240#endif
1241
1242#ifndef _WIN32
1243 ev_ref (EV_A); /* child watcher */
1244 ev_signal_stop (EV_A_ &childev);
1245#endif
1246
1247 ev_ref (EV_A); /* signal watcher */
1248 ev_io_stop (EV_A_ &sigev);
1249
1250 close (sigpipe [0]); sigpipe [0] = 0;
1251 close (sigpipe [1]); sigpipe [1] = 0;
1252
1253 loop_destroy (EV_A);
1254}
1255
1256void
1257ev_default_fork (void)
1258{
1259#if EV_MULTIPLICITY
1260 struct ev_loop *loop = ev_default_loop_ptr;
1261#endif
1262
1263 if (backend)
1264 postfork = 1;
1265} 2060}
1266 2061
1267/*****************************************************************************/ 2062/*****************************************************************************/
1268 2063
1269void 2064void
1270ev_invoke (EV_P_ void *w, int revents) 2065ev_invoke (EV_P_ void *w, int revents)
1271{ 2066{
1272 EV_CB_INVOKE ((W)w, revents); 2067 EV_CB_INVOKE ((W)w, revents);
1273} 2068}
1274 2069
1275void inline_speed 2070unsigned int
1276call_pending (EV_P) 2071ev_pending_count (EV_P)
2072{
2073 int pri;
2074 unsigned int count = 0;
2075
2076 for (pri = NUMPRI; pri--; )
2077 count += pendingcnt [pri];
2078
2079 return count;
2080}
2081
2082void noinline
2083ev_invoke_pending (EV_P)
1277{ 2084{
1278 int pri; 2085 int pri;
1279 2086
1280 for (pri = NUMPRI; pri--; ) 2087 for (pri = NUMPRI; pri--; )
1281 while (pendingcnt [pri]) 2088 while (pendingcnt [pri])
1282 { 2089 {
1283 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2090 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1284 2091
1285 if (expect_true (p->w))
1286 {
1287 /*assert (("non-pending watcher on pending list", p->w->pending));*/ 2092 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2093 /* ^ this is no longer true, as pending_w could be here */
1288 2094
1289 p->w->pending = 0; 2095 p->w->pending = 0;
1290 EV_CB_INVOKE (p->w, p->events); 2096 EV_CB_INVOKE (p->w, p->events);
1291 } 2097 EV_FREQUENT_CHECK;
1292 } 2098 }
1293} 2099}
1294 2100
1295void inline_size
1296timers_reify (EV_P)
1297{
1298 while (timercnt && ((WT)timers [0])->at <= mn_now)
1299 {
1300 ev_timer *w = (ev_timer *)timers [0];
1301
1302 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1303
1304 /* first reschedule or stop timer */
1305 if (w->repeat)
1306 {
1307 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1308
1309 ((WT)w)->at += w->repeat;
1310 if (((WT)w)->at < mn_now)
1311 ((WT)w)->at = mn_now;
1312
1313 downheap (timers, timercnt, 0);
1314 }
1315 else
1316 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1317
1318 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1319 }
1320}
1321
1322#if EV_PERIODIC_ENABLE
1323void inline_size
1324periodics_reify (EV_P)
1325{
1326 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1327 {
1328 ev_periodic *w = (ev_periodic *)periodics [0];
1329
1330 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1331
1332 /* first reschedule or stop timer */
1333 if (w->reschedule_cb)
1334 {
1335 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1336 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1337 downheap (periodics, periodiccnt, 0);
1338 }
1339 else if (w->interval)
1340 {
1341 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1342 if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1343 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1344 downheap (periodics, periodiccnt, 0);
1345 }
1346 else
1347 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1348
1349 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1350 }
1351}
1352
1353static void noinline
1354periodics_reschedule (EV_P)
1355{
1356 int i;
1357
1358 /* adjust periodics after time jump */
1359 for (i = 0; i < periodiccnt; ++i)
1360 {
1361 ev_periodic *w = (ev_periodic *)periodics [i];
1362
1363 if (w->reschedule_cb)
1364 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1365 else if (w->interval)
1366 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1367 }
1368
1369 /* now rebuild the heap */
1370 for (i = periodiccnt >> 1; i--; )
1371 downheap (periodics, periodiccnt, i);
1372}
1373#endif
1374
1375#if EV_IDLE_ENABLE 2101#if EV_IDLE_ENABLE
1376void inline_size 2102/* make idle watchers pending. this handles the "call-idle */
2103/* only when higher priorities are idle" logic */
2104inline_size void
1377idle_reify (EV_P) 2105idle_reify (EV_P)
1378{ 2106{
1379 if (expect_false (idleall)) 2107 if (expect_false (idleall))
1380 { 2108 {
1381 int pri; 2109 int pri;
… …
1393 } 2121 }
1394 } 2122 }
1395} 2123}
1396#endif 2124#endif
1397 2125
1398void inline_speed 2126/* make timers pending */
2127inline_size void
2128timers_reify (EV_P)
2129{
2130 EV_FREQUENT_CHECK;
2131
2132 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
2133 {
2134 do
2135 {
2136 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
2137
2138 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
2139
2140 /* first reschedule or stop timer */
2141 if (w->repeat)
2142 {
2143 ev_at (w) += w->repeat;
2144 if (ev_at (w) < mn_now)
2145 ev_at (w) = mn_now;
2146
2147 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
2148
2149 ANHE_at_cache (timers [HEAP0]);
2150 downheap (timers, timercnt, HEAP0);
2151 }
2152 else
2153 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
2154
2155 EV_FREQUENT_CHECK;
2156 feed_reverse (EV_A_ (W)w);
2157 }
2158 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
2159
2160 feed_reverse_done (EV_A_ EV_TIMER);
2161 }
2162}
2163
2164#if EV_PERIODIC_ENABLE
2165/* make periodics pending */
2166inline_size void
2167periodics_reify (EV_P)
2168{
2169 EV_FREQUENT_CHECK;
2170
2171 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2172 {
2173 int feed_count = 0;
2174
2175 do
2176 {
2177 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2178
2179 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
2180
2181 /* first reschedule or stop timer */
2182 if (w->reschedule_cb)
2183 {
2184 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2185
2186 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
2187
2188 ANHE_at_cache (periodics [HEAP0]);
2189 downheap (periodics, periodiccnt, HEAP0);
2190 }
2191 else if (w->interval)
2192 {
2193 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2194 /* if next trigger time is not sufficiently in the future, put it there */
2195 /* this might happen because of floating point inexactness */
2196 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2197 {
2198 ev_at (w) += w->interval;
2199
2200 /* if interval is unreasonably low we might still have a time in the past */
2201 /* so correct this. this will make the periodic very inexact, but the user */
2202 /* has effectively asked to get triggered more often than possible */
2203 if (ev_at (w) < ev_rt_now)
2204 ev_at (w) = ev_rt_now;
2205 }
2206
2207 ANHE_at_cache (periodics [HEAP0]);
2208 downheap (periodics, periodiccnt, HEAP0);
2209 }
2210 else
2211 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
2212
2213 EV_FREQUENT_CHECK;
2214 feed_reverse (EV_A_ (W)w);
2215 }
2216 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
2217
2218 feed_reverse_done (EV_A_ EV_PERIODIC);
2219 }
2220}
2221
2222/* simply recalculate all periodics */
2223/* TODO: maybe ensure that at least one event happens when jumping forward? */
2224static void noinline
2225periodics_reschedule (EV_P)
2226{
2227 int i;
2228
2229 /* adjust periodics after time jump */
2230 for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
2231 {
2232 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2233
2234 if (w->reschedule_cb)
2235 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2236 else if (w->interval)
2237 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2238
2239 ANHE_at_cache (periodics [i]);
2240 }
2241
2242 reheap (periodics, periodiccnt);
2243}
2244#endif
2245
2246/* adjust all timers by a given offset */
2247static void noinline
2248timers_reschedule (EV_P_ ev_tstamp adjust)
2249{
2250 int i;
2251
2252 for (i = 0; i < timercnt; ++i)
2253 {
2254 ANHE *he = timers + i + HEAP0;
2255 ANHE_w (*he)->at += adjust;
2256 ANHE_at_cache (*he);
2257 }
2258}
2259
2260/* fetch new monotonic and realtime times from the kernel */
2261/* also detect if there was a timejump, and act accordingly */
2262inline_speed void
1399time_update (EV_P_ ev_tstamp max_block) 2263time_update (EV_P_ ev_tstamp max_block)
1400{ 2264{
1401 int i;
1402
1403#if EV_USE_MONOTONIC 2265#if EV_USE_MONOTONIC
1404 if (expect_true (have_monotonic)) 2266 if (expect_true (have_monotonic))
1405 { 2267 {
2268 int i;
1406 ev_tstamp odiff = rtmn_diff; 2269 ev_tstamp odiff = rtmn_diff;
1407 2270
1408 mn_now = get_clock (); 2271 mn_now = get_clock ();
1409 2272
1410 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2273 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1428 */ 2291 */
1429 for (i = 4; --i; ) 2292 for (i = 4; --i; )
1430 { 2293 {
1431 rtmn_diff = ev_rt_now - mn_now; 2294 rtmn_diff = ev_rt_now - mn_now;
1432 2295
1433 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 2296 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP))
1434 return; /* all is well */ 2297 return; /* all is well */
1435 2298
1436 ev_rt_now = ev_time (); 2299 ev_rt_now = ev_time ();
1437 mn_now = get_clock (); 2300 mn_now = get_clock ();
1438 now_floor = mn_now; 2301 now_floor = mn_now;
1439 } 2302 }
1440 2303
2304 /* no timer adjustment, as the monotonic clock doesn't jump */
2305 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1441# if EV_PERIODIC_ENABLE 2306# if EV_PERIODIC_ENABLE
1442 periodics_reschedule (EV_A); 2307 periodics_reschedule (EV_A);
1443# endif 2308# endif
1444 /* no timer adjustment, as the monotonic clock doesn't jump */
1445 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1446 } 2309 }
1447 else 2310 else
1448#endif 2311#endif
1449 { 2312 {
1450 ev_rt_now = ev_time (); 2313 ev_rt_now = ev_time ();
1451 2314
1452 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 2315 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1453 { 2316 {
2317 /* adjust timers. this is easy, as the offset is the same for all of them */
2318 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1454#if EV_PERIODIC_ENABLE 2319#if EV_PERIODIC_ENABLE
1455 periodics_reschedule (EV_A); 2320 periodics_reschedule (EV_A);
1456#endif 2321#endif
1457 /* adjust timers. this is easy, as the offset is the same for all of them */
1458 for (i = 0; i < timercnt; ++i)
1459 ((WT)timers [i])->at += ev_rt_now - mn_now;
1460 } 2322 }
1461 2323
1462 mn_now = ev_rt_now; 2324 mn_now = ev_rt_now;
1463 } 2325 }
1464} 2326}
1465 2327
1466void 2328void
1467ev_ref (EV_P)
1468{
1469 ++activecnt;
1470}
1471
1472void
1473ev_unref (EV_P)
1474{
1475 --activecnt;
1476}
1477
1478static int loop_done;
1479
1480void
1481ev_loop (EV_P_ int flags) 2329ev_run (EV_P_ int flags)
1482{ 2330{
1483 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) 2331#if EV_FEATURE_API
1484 ? EVUNLOOP_ONE 2332 ++loop_depth;
1485 : EVUNLOOP_CANCEL; 2333#endif
1486 2334
2335 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2336
2337 loop_done = EVBREAK_CANCEL;
2338
1487 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2339 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1488 2340
1489 do 2341 do
1490 { 2342 {
2343#if EV_VERIFY >= 2
2344 ev_verify (EV_A);
2345#endif
2346
1491#ifndef _WIN32 2347#ifndef _WIN32
1492 if (expect_false (curpid)) /* penalise the forking check even more */ 2348 if (expect_false (curpid)) /* penalise the forking check even more */
1493 if (expect_false (getpid () != curpid)) 2349 if (expect_false (getpid () != curpid))
1494 { 2350 {
1495 curpid = getpid (); 2351 curpid = getpid ();
… …
1501 /* we might have forked, so queue fork handlers */ 2357 /* we might have forked, so queue fork handlers */
1502 if (expect_false (postfork)) 2358 if (expect_false (postfork))
1503 if (forkcnt) 2359 if (forkcnt)
1504 { 2360 {
1505 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2361 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1506 call_pending (EV_A); 2362 EV_INVOKE_PENDING;
1507 } 2363 }
1508#endif 2364#endif
1509 2365
2366#if EV_PREPARE_ENABLE
1510 /* queue prepare watchers (and execute them) */ 2367 /* queue prepare watchers (and execute them) */
1511 if (expect_false (preparecnt)) 2368 if (expect_false (preparecnt))
1512 { 2369 {
1513 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2370 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1514 call_pending (EV_A); 2371 EV_INVOKE_PENDING;
1515 } 2372 }
2373#endif
1516 2374
1517 if (expect_false (!activecnt)) 2375 if (expect_false (loop_done))
1518 break; 2376 break;
1519 2377
1520 /* we might have forked, so reify kernel state if necessary */ 2378 /* we might have forked, so reify kernel state if necessary */
1521 if (expect_false (postfork)) 2379 if (expect_false (postfork))
1522 loop_fork (EV_A); 2380 loop_fork (EV_A);
… …
1527 /* calculate blocking time */ 2385 /* calculate blocking time */
1528 { 2386 {
1529 ev_tstamp waittime = 0.; 2387 ev_tstamp waittime = 0.;
1530 ev_tstamp sleeptime = 0.; 2388 ev_tstamp sleeptime = 0.;
1531 2389
2390 /* remember old timestamp for io_blocktime calculation */
2391 ev_tstamp prev_mn_now = mn_now;
2392
2393 /* update time to cancel out callback processing overhead */
2394 time_update (EV_A_ 1e100);
2395
1532 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2396 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt)))
1533 { 2397 {
1534 /* update time to cancel out callback processing overhead */
1535 time_update (EV_A_ 1e100);
1536
1537 waittime = MAX_BLOCKTIME; 2398 waittime = MAX_BLOCKTIME;
1538 2399
1539 if (timercnt) 2400 if (timercnt)
1540 { 2401 {
1541 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge; 2402 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
1542 if (waittime > to) waittime = to; 2403 if (waittime > to) waittime = to;
1543 } 2404 }
1544 2405
1545#if EV_PERIODIC_ENABLE 2406#if EV_PERIODIC_ENABLE
1546 if (periodiccnt) 2407 if (periodiccnt)
1547 { 2408 {
1548 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge; 2409 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1549 if (waittime > to) waittime = to; 2410 if (waittime > to) waittime = to;
1550 } 2411 }
1551#endif 2412#endif
1552 2413
2414 /* don't let timeouts decrease the waittime below timeout_blocktime */
1553 if (expect_false (waittime < timeout_blocktime)) 2415 if (expect_false (waittime < timeout_blocktime))
1554 waittime = timeout_blocktime; 2416 waittime = timeout_blocktime;
1555 2417
1556 sleeptime = waittime - backend_fudge; 2418 /* extra check because io_blocktime is commonly 0 */
1557
1558 if (expect_true (sleeptime > io_blocktime)) 2419 if (expect_false (io_blocktime))
1559 sleeptime = io_blocktime;
1560
1561 if (sleeptime)
1562 { 2420 {
2421 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2422
2423 if (sleeptime > waittime - backend_fudge)
2424 sleeptime = waittime - backend_fudge;
2425
2426 if (expect_true (sleeptime > 0.))
2427 {
1563 ev_sleep (sleeptime); 2428 ev_sleep (sleeptime);
1564 waittime -= sleeptime; 2429 waittime -= sleeptime;
2430 }
1565 } 2431 }
1566 } 2432 }
1567 2433
2434#if EV_FEATURE_API
1568 ++loop_count; 2435 ++loop_count;
2436#endif
2437 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
1569 backend_poll (EV_A_ waittime); 2438 backend_poll (EV_A_ waittime);
2439 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
1570 2440
1571 /* update ev_rt_now, do magic */ 2441 /* update ev_rt_now, do magic */
1572 time_update (EV_A_ waittime + sleeptime); 2442 time_update (EV_A_ waittime + sleeptime);
1573 } 2443 }
1574 2444
… …
1581#if EV_IDLE_ENABLE 2451#if EV_IDLE_ENABLE
1582 /* queue idle watchers unless other events are pending */ 2452 /* queue idle watchers unless other events are pending */
1583 idle_reify (EV_A); 2453 idle_reify (EV_A);
1584#endif 2454#endif
1585 2455
2456#if EV_CHECK_ENABLE
1586 /* queue check watchers, to be executed first */ 2457 /* queue check watchers, to be executed first */
1587 if (expect_false (checkcnt)) 2458 if (expect_false (checkcnt))
1588 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2459 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2460#endif
1589 2461
1590 call_pending (EV_A); 2462 EV_INVOKE_PENDING;
1591
1592 } 2463 }
1593 while (expect_true (activecnt && !loop_done)); 2464 while (expect_true (
2465 activecnt
2466 && !loop_done
2467 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2468 ));
1594 2469
1595 if (loop_done == EVUNLOOP_ONE) 2470 if (loop_done == EVBREAK_ONE)
1596 loop_done = EVUNLOOP_CANCEL; 2471 loop_done = EVBREAK_CANCEL;
1597}
1598 2472
2473#if EV_FEATURE_API
2474 --loop_depth;
2475#endif
2476}
2477
1599void 2478void
1600ev_unloop (EV_P_ int how) 2479ev_break (EV_P_ int how)
1601{ 2480{
1602 loop_done = how; 2481 loop_done = how;
1603} 2482}
1604 2483
2484void
2485ev_ref (EV_P)
2486{
2487 ++activecnt;
2488}
2489
2490void
2491ev_unref (EV_P)
2492{
2493 --activecnt;
2494}
2495
2496void
2497ev_now_update (EV_P)
2498{
2499 time_update (EV_A_ 1e100);
2500}
2501
2502void
2503ev_suspend (EV_P)
2504{
2505 ev_now_update (EV_A);
2506}
2507
2508void
2509ev_resume (EV_P)
2510{
2511 ev_tstamp mn_prev = mn_now;
2512
2513 ev_now_update (EV_A);
2514 timers_reschedule (EV_A_ mn_now - mn_prev);
2515#if EV_PERIODIC_ENABLE
2516 /* TODO: really do this? */
2517 periodics_reschedule (EV_A);
2518#endif
2519}
2520
1605/*****************************************************************************/ 2521/*****************************************************************************/
2522/* singly-linked list management, used when the expected list length is short */
1606 2523
1607void inline_size 2524inline_size void
1608wlist_add (WL *head, WL elem) 2525wlist_add (WL *head, WL elem)
1609{ 2526{
1610 elem->next = *head; 2527 elem->next = *head;
1611 *head = elem; 2528 *head = elem;
1612} 2529}
1613 2530
1614void inline_size 2531inline_size void
1615wlist_del (WL *head, WL elem) 2532wlist_del (WL *head, WL elem)
1616{ 2533{
1617 while (*head) 2534 while (*head)
1618 { 2535 {
1619 if (*head == elem) 2536 if (expect_true (*head == elem))
1620 { 2537 {
1621 *head = elem->next; 2538 *head = elem->next;
1622 return; 2539 break;
1623 } 2540 }
1624 2541
1625 head = &(*head)->next; 2542 head = &(*head)->next;
1626 } 2543 }
1627} 2544}
1628 2545
1629void inline_speed 2546/* internal, faster, version of ev_clear_pending */
2547inline_speed void
1630clear_pending (EV_P_ W w) 2548clear_pending (EV_P_ W w)
1631{ 2549{
1632 if (w->pending) 2550 if (w->pending)
1633 { 2551 {
1634 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2552 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
1635 w->pending = 0; 2553 w->pending = 0;
1636 } 2554 }
1637} 2555}
1638 2556
1639int 2557int
… …
1643 int pending = w_->pending; 2561 int pending = w_->pending;
1644 2562
1645 if (expect_true (pending)) 2563 if (expect_true (pending))
1646 { 2564 {
1647 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2565 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2566 p->w = (W)&pending_w;
1648 w_->pending = 0; 2567 w_->pending = 0;
1649 p->w = 0;
1650 return p->events; 2568 return p->events;
1651 } 2569 }
1652 else 2570 else
1653 return 0; 2571 return 0;
1654} 2572}
1655 2573
1656void inline_size 2574inline_size void
1657pri_adjust (EV_P_ W w) 2575pri_adjust (EV_P_ W w)
1658{ 2576{
1659 int pri = w->priority; 2577 int pri = ev_priority (w);
1660 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2578 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1661 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2579 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1662 w->priority = pri; 2580 ev_set_priority (w, pri);
1663} 2581}
1664 2582
1665void inline_speed 2583inline_speed void
1666ev_start (EV_P_ W w, int active) 2584ev_start (EV_P_ W w, int active)
1667{ 2585{
1668 pri_adjust (EV_A_ w); 2586 pri_adjust (EV_A_ w);
1669 w->active = active; 2587 w->active = active;
1670 ev_ref (EV_A); 2588 ev_ref (EV_A);
1671} 2589}
1672 2590
1673void inline_size 2591inline_size void
1674ev_stop (EV_P_ W w) 2592ev_stop (EV_P_ W w)
1675{ 2593{
1676 ev_unref (EV_A); 2594 ev_unref (EV_A);
1677 w->active = 0; 2595 w->active = 0;
1678} 2596}
… …
1685 int fd = w->fd; 2603 int fd = w->fd;
1686 2604
1687 if (expect_false (ev_is_active (w))) 2605 if (expect_false (ev_is_active (w)))
1688 return; 2606 return;
1689 2607
1690 assert (("ev_io_start called with negative fd", fd >= 0)); 2608 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2609 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2610
2611 EV_FREQUENT_CHECK;
1691 2612
1692 ev_start (EV_A_ (W)w, 1); 2613 ev_start (EV_A_ (W)w, 1);
1693 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2614 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
1694 wlist_add (&anfds[fd].head, (WL)w); 2615 wlist_add (&anfds[fd].head, (WL)w);
1695 2616
1696 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 2617 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
1697 w->events &= ~EV_IOFDSET; 2618 w->events &= ~EV__IOFDSET;
2619
2620 EV_FREQUENT_CHECK;
1698} 2621}
1699 2622
1700void noinline 2623void noinline
1701ev_io_stop (EV_P_ ev_io *w) 2624ev_io_stop (EV_P_ ev_io *w)
1702{ 2625{
1703 clear_pending (EV_A_ (W)w); 2626 clear_pending (EV_A_ (W)w);
1704 if (expect_false (!ev_is_active (w))) 2627 if (expect_false (!ev_is_active (w)))
1705 return; 2628 return;
1706 2629
1707 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 2630 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2631
2632 EV_FREQUENT_CHECK;
1708 2633
1709 wlist_del (&anfds[w->fd].head, (WL)w); 2634 wlist_del (&anfds[w->fd].head, (WL)w);
1710 ev_stop (EV_A_ (W)w); 2635 ev_stop (EV_A_ (W)w);
1711 2636
1712 fd_change (EV_A_ w->fd, 1); 2637 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2638
2639 EV_FREQUENT_CHECK;
1713} 2640}
1714 2641
1715void noinline 2642void noinline
1716ev_timer_start (EV_P_ ev_timer *w) 2643ev_timer_start (EV_P_ ev_timer *w)
1717{ 2644{
1718 if (expect_false (ev_is_active (w))) 2645 if (expect_false (ev_is_active (w)))
1719 return; 2646 return;
1720 2647
1721 ((WT)w)->at += mn_now; 2648 ev_at (w) += mn_now;
1722 2649
1723 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2650 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1724 2651
2652 EV_FREQUENT_CHECK;
2653
2654 ++timercnt;
1725 ev_start (EV_A_ (W)w, ++timercnt); 2655 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
1726 array_needsize (WT, timers, timermax, timercnt, EMPTY2); 2656 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1727 timers [timercnt - 1] = (WT)w; 2657 ANHE_w (timers [ev_active (w)]) = (WT)w;
1728 upheap (timers, timercnt - 1); 2658 ANHE_at_cache (timers [ev_active (w)]);
2659 upheap (timers, ev_active (w));
1729 2660
2661 EV_FREQUENT_CHECK;
2662
1730 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/ 2663 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
1731} 2664}
1732 2665
1733void noinline 2666void noinline
1734ev_timer_stop (EV_P_ ev_timer *w) 2667ev_timer_stop (EV_P_ ev_timer *w)
1735{ 2668{
1736 clear_pending (EV_A_ (W)w); 2669 clear_pending (EV_A_ (W)w);
1737 if (expect_false (!ev_is_active (w))) 2670 if (expect_false (!ev_is_active (w)))
1738 return; 2671 return;
1739 2672
1740 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w)); 2673 EV_FREQUENT_CHECK;
1741 2674
1742 { 2675 {
1743 int active = ((W)w)->active; 2676 int active = ev_active (w);
1744 2677
2678 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2679
2680 --timercnt;
2681
1745 if (expect_true (--active < --timercnt)) 2682 if (expect_true (active < timercnt + HEAP0))
1746 { 2683 {
1747 timers [active] = timers [timercnt]; 2684 timers [active] = timers [timercnt + HEAP0];
1748 adjustheap (timers, timercnt, active); 2685 adjustheap (timers, timercnt, active);
1749 } 2686 }
1750 } 2687 }
1751 2688
1752 ((WT)w)->at -= mn_now; 2689 ev_at (w) -= mn_now;
1753 2690
1754 ev_stop (EV_A_ (W)w); 2691 ev_stop (EV_A_ (W)w);
2692
2693 EV_FREQUENT_CHECK;
1755} 2694}
1756 2695
1757void noinline 2696void noinline
1758ev_timer_again (EV_P_ ev_timer *w) 2697ev_timer_again (EV_P_ ev_timer *w)
1759{ 2698{
2699 EV_FREQUENT_CHECK;
2700
1760 if (ev_is_active (w)) 2701 if (ev_is_active (w))
1761 { 2702 {
1762 if (w->repeat) 2703 if (w->repeat)
1763 { 2704 {
1764 ((WT)w)->at = mn_now + w->repeat; 2705 ev_at (w) = mn_now + w->repeat;
2706 ANHE_at_cache (timers [ev_active (w)]);
1765 adjustheap (timers, timercnt, ((W)w)->active - 1); 2707 adjustheap (timers, timercnt, ev_active (w));
1766 } 2708 }
1767 else 2709 else
1768 ev_timer_stop (EV_A_ w); 2710 ev_timer_stop (EV_A_ w);
1769 } 2711 }
1770 else if (w->repeat) 2712 else if (w->repeat)
1771 { 2713 {
1772 w->at = w->repeat; 2714 ev_at (w) = w->repeat;
1773 ev_timer_start (EV_A_ w); 2715 ev_timer_start (EV_A_ w);
1774 } 2716 }
2717
2718 EV_FREQUENT_CHECK;
2719}
2720
2721ev_tstamp
2722ev_timer_remaining (EV_P_ ev_timer *w)
2723{
2724 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
1775} 2725}
1776 2726
1777#if EV_PERIODIC_ENABLE 2727#if EV_PERIODIC_ENABLE
1778void noinline 2728void noinline
1779ev_periodic_start (EV_P_ ev_periodic *w) 2729ev_periodic_start (EV_P_ ev_periodic *w)
1780{ 2730{
1781 if (expect_false (ev_is_active (w))) 2731 if (expect_false (ev_is_active (w)))
1782 return; 2732 return;
1783 2733
1784 if (w->reschedule_cb) 2734 if (w->reschedule_cb)
1785 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 2735 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1786 else if (w->interval) 2736 else if (w->interval)
1787 { 2737 {
1788 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2738 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
1789 /* this formula differs from the one in periodic_reify because we do not always round up */ 2739 /* this formula differs from the one in periodic_reify because we do not always round up */
1790 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2740 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1791 } 2741 }
1792 else 2742 else
1793 ((WT)w)->at = w->offset; 2743 ev_at (w) = w->offset;
1794 2744
2745 EV_FREQUENT_CHECK;
2746
2747 ++periodiccnt;
1795 ev_start (EV_A_ (W)w, ++periodiccnt); 2748 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
1796 array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2); 2749 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
1797 periodics [periodiccnt - 1] = (WT)w; 2750 ANHE_w (periodics [ev_active (w)]) = (WT)w;
1798 upheap (periodics, periodiccnt - 1); 2751 ANHE_at_cache (periodics [ev_active (w)]);
2752 upheap (periodics, ev_active (w));
1799 2753
2754 EV_FREQUENT_CHECK;
2755
1800 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/ 2756 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
1801} 2757}
1802 2758
1803void noinline 2759void noinline
1804ev_periodic_stop (EV_P_ ev_periodic *w) 2760ev_periodic_stop (EV_P_ ev_periodic *w)
1805{ 2761{
1806 clear_pending (EV_A_ (W)w); 2762 clear_pending (EV_A_ (W)w);
1807 if (expect_false (!ev_is_active (w))) 2763 if (expect_false (!ev_is_active (w)))
1808 return; 2764 return;
1809 2765
1810 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w)); 2766 EV_FREQUENT_CHECK;
1811 2767
1812 { 2768 {
1813 int active = ((W)w)->active; 2769 int active = ev_active (w);
1814 2770
2771 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2772
2773 --periodiccnt;
2774
1815 if (expect_true (--active < --periodiccnt)) 2775 if (expect_true (active < periodiccnt + HEAP0))
1816 { 2776 {
1817 periodics [active] = periodics [periodiccnt]; 2777 periodics [active] = periodics [periodiccnt + HEAP0];
1818 adjustheap (periodics, periodiccnt, active); 2778 adjustheap (periodics, periodiccnt, active);
1819 } 2779 }
1820 } 2780 }
1821 2781
1822 ev_stop (EV_A_ (W)w); 2782 ev_stop (EV_A_ (W)w);
2783
2784 EV_FREQUENT_CHECK;
1823} 2785}
1824 2786
1825void noinline 2787void noinline
1826ev_periodic_again (EV_P_ ev_periodic *w) 2788ev_periodic_again (EV_P_ ev_periodic *w)
1827{ 2789{
… …
1833 2795
1834#ifndef SA_RESTART 2796#ifndef SA_RESTART
1835# define SA_RESTART 0 2797# define SA_RESTART 0
1836#endif 2798#endif
1837 2799
2800#if EV_SIGNAL_ENABLE
2801
1838void noinline 2802void noinline
1839ev_signal_start (EV_P_ ev_signal *w) 2803ev_signal_start (EV_P_ ev_signal *w)
1840{ 2804{
1841#if EV_MULTIPLICITY
1842 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1843#endif
1844 if (expect_false (ev_is_active (w))) 2805 if (expect_false (ev_is_active (w)))
1845 return; 2806 return;
1846 2807
1847 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 2808 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
1848 2809
2810#if EV_MULTIPLICITY
2811 assert (("libev: a signal must not be attached to two different loops",
2812 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2813
2814 signals [w->signum - 1].loop = EV_A;
2815#endif
2816
2817 EV_FREQUENT_CHECK;
2818
2819#if EV_USE_SIGNALFD
2820 if (sigfd == -2)
1849 { 2821 {
1850#ifndef _WIN32 2822 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
1851 sigset_t full, prev; 2823 if (sigfd < 0 && errno == EINVAL)
1852 sigfillset (&full); 2824 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
1853 sigprocmask (SIG_SETMASK, &full, &prev);
1854#endif
1855 2825
1856 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 2826 if (sigfd >= 0)
2827 {
2828 fd_intern (sigfd); /* doing it twice will not hurt */
1857 2829
1858#ifndef _WIN32 2830 sigemptyset (&sigfd_set);
1859 sigprocmask (SIG_SETMASK, &prev, 0); 2831
1860#endif 2832 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
2833 ev_set_priority (&sigfd_w, EV_MAXPRI);
2834 ev_io_start (EV_A_ &sigfd_w);
2835 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
2836 }
1861 } 2837 }
2838
2839 if (sigfd >= 0)
2840 {
2841 /* TODO: check .head */
2842 sigaddset (&sigfd_set, w->signum);
2843 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
2844
2845 signalfd (sigfd, &sigfd_set, 0);
2846 }
2847#endif
1862 2848
1863 ev_start (EV_A_ (W)w, 1); 2849 ev_start (EV_A_ (W)w, 1);
1864 wlist_add (&signals [w->signum - 1].head, (WL)w); 2850 wlist_add (&signals [w->signum - 1].head, (WL)w);
1865 2851
1866 if (!((WL)w)->next) 2852 if (!((WL)w)->next)
2853# if EV_USE_SIGNALFD
2854 if (sigfd < 0) /*TODO*/
2855# endif
1867 { 2856 {
1868#if _WIN32 2857# ifdef _WIN32
2858 evpipe_init (EV_A);
2859
1869 signal (w->signum, sighandler); 2860 signal (w->signum, ev_sighandler);
1870#else 2861# else
1871 struct sigaction sa; 2862 struct sigaction sa;
2863
2864 evpipe_init (EV_A);
2865
1872 sa.sa_handler = sighandler; 2866 sa.sa_handler = ev_sighandler;
1873 sigfillset (&sa.sa_mask); 2867 sigfillset (&sa.sa_mask);
1874 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2868 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1875 sigaction (w->signum, &sa, 0); 2869 sigaction (w->signum, &sa, 0);
2870
2871 sigemptyset (&sa.sa_mask);
2872 sigaddset (&sa.sa_mask, w->signum);
2873 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
1876#endif 2874#endif
1877 } 2875 }
2876
2877 EV_FREQUENT_CHECK;
1878} 2878}
1879 2879
1880void noinline 2880void noinline
1881ev_signal_stop (EV_P_ ev_signal *w) 2881ev_signal_stop (EV_P_ ev_signal *w)
1882{ 2882{
1883 clear_pending (EV_A_ (W)w); 2883 clear_pending (EV_A_ (W)w);
1884 if (expect_false (!ev_is_active (w))) 2884 if (expect_false (!ev_is_active (w)))
1885 return; 2885 return;
1886 2886
2887 EV_FREQUENT_CHECK;
2888
1887 wlist_del (&signals [w->signum - 1].head, (WL)w); 2889 wlist_del (&signals [w->signum - 1].head, (WL)w);
1888 ev_stop (EV_A_ (W)w); 2890 ev_stop (EV_A_ (W)w);
1889 2891
1890 if (!signals [w->signum - 1].head) 2892 if (!signals [w->signum - 1].head)
2893 {
2894#if EV_MULTIPLICITY
2895 signals [w->signum - 1].loop = 0; /* unattach from signal */
2896#endif
2897#if EV_USE_SIGNALFD
2898 if (sigfd >= 0)
2899 {
2900 sigset_t ss;
2901
2902 sigemptyset (&ss);
2903 sigaddset (&ss, w->signum);
2904 sigdelset (&sigfd_set, w->signum);
2905
2906 signalfd (sigfd, &sigfd_set, 0);
2907 sigprocmask (SIG_UNBLOCK, &ss, 0);
2908 }
2909 else
2910#endif
1891 signal (w->signum, SIG_DFL); 2911 signal (w->signum, SIG_DFL);
2912 }
2913
2914 EV_FREQUENT_CHECK;
1892} 2915}
2916
2917#endif
2918
2919#if EV_CHILD_ENABLE
1893 2920
1894void 2921void
1895ev_child_start (EV_P_ ev_child *w) 2922ev_child_start (EV_P_ ev_child *w)
1896{ 2923{
1897#if EV_MULTIPLICITY 2924#if EV_MULTIPLICITY
1898 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2925 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1899#endif 2926#endif
1900 if (expect_false (ev_is_active (w))) 2927 if (expect_false (ev_is_active (w)))
1901 return; 2928 return;
1902 2929
2930 EV_FREQUENT_CHECK;
2931
1903 ev_start (EV_A_ (W)w, 1); 2932 ev_start (EV_A_ (W)w, 1);
1904 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2933 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2934
2935 EV_FREQUENT_CHECK;
1905} 2936}
1906 2937
1907void 2938void
1908ev_child_stop (EV_P_ ev_child *w) 2939ev_child_stop (EV_P_ ev_child *w)
1909{ 2940{
1910 clear_pending (EV_A_ (W)w); 2941 clear_pending (EV_A_ (W)w);
1911 if (expect_false (!ev_is_active (w))) 2942 if (expect_false (!ev_is_active (w)))
1912 return; 2943 return;
1913 2944
2945 EV_FREQUENT_CHECK;
2946
1914 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2947 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
1915 ev_stop (EV_A_ (W)w); 2948 ev_stop (EV_A_ (W)w);
2949
2950 EV_FREQUENT_CHECK;
1916} 2951}
2952
2953#endif
1917 2954
1918#if EV_STAT_ENABLE 2955#if EV_STAT_ENABLE
1919 2956
1920# ifdef _WIN32 2957# ifdef _WIN32
1921# undef lstat 2958# undef lstat
1922# define lstat(a,b) _stati64 (a,b) 2959# define lstat(a,b) _stati64 (a,b)
1923# endif 2960# endif
1924 2961
1925#define DEF_STAT_INTERVAL 5.0074891 2962#define DEF_STAT_INTERVAL 5.0074891
2963#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
1926#define MIN_STAT_INTERVAL 0.1074891 2964#define MIN_STAT_INTERVAL 0.1074891
1927 2965
1928static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 2966static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1929 2967
1930#if EV_USE_INOTIFY 2968#if EV_USE_INOTIFY
1931# define EV_INOTIFY_BUFSIZE 8192 2969
2970/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
2971# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
1932 2972
1933static void noinline 2973static void noinline
1934infy_add (EV_P_ ev_stat *w) 2974infy_add (EV_P_ ev_stat *w)
1935{ 2975{
1936 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); 2976 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);
1937 2977
1938 if (w->wd < 0) 2978 if (w->wd >= 0)
2979 {
2980 struct statfs sfs;
2981
2982 /* now local changes will be tracked by inotify, but remote changes won't */
2983 /* unless the filesystem is known to be local, we therefore still poll */
2984 /* also do poll on <2.6.25, but with normal frequency */
2985
2986 if (!fs_2625)
2987 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2988 else if (!statfs (w->path, &sfs)
2989 && (sfs.f_type == 0x1373 /* devfs */
2990 || sfs.f_type == 0xEF53 /* ext2/3 */
2991 || sfs.f_type == 0x3153464a /* jfs */
2992 || sfs.f_type == 0x52654973 /* reiser3 */
2993 || sfs.f_type == 0x01021994 /* tempfs */
2994 || sfs.f_type == 0x58465342 /* xfs */))
2995 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
2996 else
2997 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
1939 { 2998 }
1940 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 2999 else
3000 {
3001 /* can't use inotify, continue to stat */
3002 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
1941 3003
1942 /* monitor some parent directory for speedup hints */ 3004 /* if path is not there, monitor some parent directory for speedup hints */
3005 /* note that exceeding the hardcoded path limit is not a correctness issue, */
3006 /* but an efficiency issue only */
1943 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3007 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
1944 { 3008 {
1945 char path [4096]; 3009 char path [4096];
1946 strcpy (path, w->path); 3010 strcpy (path, w->path);
1947 3011
… …
1950 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 3014 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
1951 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 3015 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
1952 3016
1953 char *pend = strrchr (path, '/'); 3017 char *pend = strrchr (path, '/');
1954 3018
1955 if (!pend) 3019 if (!pend || pend == path)
1956 break; /* whoops, no '/', complain to your admin */ 3020 break;
1957 3021
1958 *pend = 0; 3022 *pend = 0;
1959 w->wd = inotify_add_watch (fs_fd, path, mask); 3023 w->wd = inotify_add_watch (fs_fd, path, mask);
1960 } 3024 }
1961 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3025 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
1962 } 3026 }
1963 } 3027 }
1964 else
1965 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
1966 3028
1967 if (w->wd >= 0) 3029 if (w->wd >= 0)
1968 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3030 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
3031
3032 /* now re-arm timer, if required */
3033 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3034 ev_timer_again (EV_A_ &w->timer);
3035 if (ev_is_active (&w->timer)) ev_unref (EV_A);
1969} 3036}
1970 3037
1971static void noinline 3038static void noinline
1972infy_del (EV_P_ ev_stat *w) 3039infy_del (EV_P_ ev_stat *w)
1973{ 3040{
… …
1976 3043
1977 if (wd < 0) 3044 if (wd < 0)
1978 return; 3045 return;
1979 3046
1980 w->wd = -2; 3047 w->wd = -2;
1981 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3048 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
1982 wlist_del (&fs_hash [slot].head, (WL)w); 3049 wlist_del (&fs_hash [slot].head, (WL)w);
1983 3050
1984 /* remove this watcher, if others are watching it, they will rearm */ 3051 /* remove this watcher, if others are watching it, they will rearm */
1985 inotify_rm_watch (fs_fd, wd); 3052 inotify_rm_watch (fs_fd, wd);
1986} 3053}
1987 3054
1988static void noinline 3055static void noinline
1989infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3056infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
1990{ 3057{
1991 if (slot < 0) 3058 if (slot < 0)
1992 /* overflow, need to check for all hahs slots */ 3059 /* overflow, need to check for all hash slots */
1993 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3060 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
1994 infy_wd (EV_A_ slot, wd, ev); 3061 infy_wd (EV_A_ slot, wd, ev);
1995 else 3062 else
1996 { 3063 {
1997 WL w_; 3064 WL w_;
1998 3065
1999 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3066 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2000 { 3067 {
2001 ev_stat *w = (ev_stat *)w_; 3068 ev_stat *w = (ev_stat *)w_;
2002 w_ = w_->next; /* lets us remove this watcher and all before it */ 3069 w_ = w_->next; /* lets us remove this watcher and all before it */
2003 3070
2004 if (w->wd == wd || wd == -1) 3071 if (w->wd == wd || wd == -1)
2005 { 3072 {
2006 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3073 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2007 { 3074 {
3075 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2008 w->wd = -1; 3076 w->wd = -1;
2009 infy_add (EV_A_ w); /* re-add, no matter what */ 3077 infy_add (EV_A_ w); /* re-add, no matter what */
2010 } 3078 }
2011 3079
2012 stat_timer_cb (EV_A_ &w->timer, 0); 3080 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2017 3085
2018static void 3086static void
2019infy_cb (EV_P_ ev_io *w, int revents) 3087infy_cb (EV_P_ ev_io *w, int revents)
2020{ 3088{
2021 char buf [EV_INOTIFY_BUFSIZE]; 3089 char buf [EV_INOTIFY_BUFSIZE];
2022 struct inotify_event *ev = (struct inotify_event *)buf;
2023 int ofs; 3090 int ofs;
2024 int len = read (fs_fd, buf, sizeof (buf)); 3091 int len = read (fs_fd, buf, sizeof (buf));
2025 3092
2026 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3093 for (ofs = 0; ofs < len; )
3094 {
3095 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2027 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3096 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3097 ofs += sizeof (struct inotify_event) + ev->len;
3098 }
2028} 3099}
2029 3100
2030void inline_size 3101inline_size void
3102ev_check_2625 (EV_P)
3103{
3104 /* kernels < 2.6.25 are borked
3105 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3106 */
3107 if (ev_linux_version () < 0x020619)
3108 return;
3109
3110 fs_2625 = 1;
3111}
3112
3113inline_size int
3114infy_newfd (void)
3115{
3116#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3117 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3118 if (fd >= 0)
3119 return fd;
3120#endif
3121 return inotify_init ();
3122}
3123
3124inline_size void
2031infy_init (EV_P) 3125infy_init (EV_P)
2032{ 3126{
2033 if (fs_fd != -2) 3127 if (fs_fd != -2)
2034 return; 3128 return;
2035 3129
3130 fs_fd = -1;
3131
3132 ev_check_2625 (EV_A);
3133
2036 fs_fd = inotify_init (); 3134 fs_fd = infy_newfd ();
2037 3135
2038 if (fs_fd >= 0) 3136 if (fs_fd >= 0)
2039 { 3137 {
3138 fd_intern (fs_fd);
2040 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3139 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2041 ev_set_priority (&fs_w, EV_MAXPRI); 3140 ev_set_priority (&fs_w, EV_MAXPRI);
2042 ev_io_start (EV_A_ &fs_w); 3141 ev_io_start (EV_A_ &fs_w);
3142 ev_unref (EV_A);
2043 } 3143 }
2044} 3144}
2045 3145
2046void inline_size 3146inline_size void
2047infy_fork (EV_P) 3147infy_fork (EV_P)
2048{ 3148{
2049 int slot; 3149 int slot;
2050 3150
2051 if (fs_fd < 0) 3151 if (fs_fd < 0)
2052 return; 3152 return;
2053 3153
3154 ev_ref (EV_A);
3155 ev_io_stop (EV_A_ &fs_w);
2054 close (fs_fd); 3156 close (fs_fd);
2055 fs_fd = inotify_init (); 3157 fs_fd = infy_newfd ();
2056 3158
3159 if (fs_fd >= 0)
3160 {
3161 fd_intern (fs_fd);
3162 ev_io_set (&fs_w, fs_fd, EV_READ);
3163 ev_io_start (EV_A_ &fs_w);
3164 ev_unref (EV_A);
3165 }
3166
2057 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3167 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2058 { 3168 {
2059 WL w_ = fs_hash [slot].head; 3169 WL w_ = fs_hash [slot].head;
2060 fs_hash [slot].head = 0; 3170 fs_hash [slot].head = 0;
2061 3171
2062 while (w_) 3172 while (w_)
… …
2067 w->wd = -1; 3177 w->wd = -1;
2068 3178
2069 if (fs_fd >= 0) 3179 if (fs_fd >= 0)
2070 infy_add (EV_A_ w); /* re-add, no matter what */ 3180 infy_add (EV_A_ w); /* re-add, no matter what */
2071 else 3181 else
3182 {
3183 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3184 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2072 ev_timer_start (EV_A_ &w->timer); 3185 ev_timer_again (EV_A_ &w->timer);
3186 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3187 }
2073 } 3188 }
2074
2075 } 3189 }
2076} 3190}
2077 3191
3192#endif
3193
3194#ifdef _WIN32
3195# define EV_LSTAT(p,b) _stati64 (p, b)
3196#else
3197# define EV_LSTAT(p,b) lstat (p, b)
2078#endif 3198#endif
2079 3199
2080void 3200void
2081ev_stat_stat (EV_P_ ev_stat *w) 3201ev_stat_stat (EV_P_ ev_stat *w)
2082{ 3202{
… …
2089static void noinline 3209static void noinline
2090stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3210stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2091{ 3211{
2092 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3212 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2093 3213
2094 /* we copy this here each the time so that */ 3214 ev_statdata prev = w->attr;
2095 /* prev has the old value when the callback gets invoked */
2096 w->prev = w->attr;
2097 ev_stat_stat (EV_A_ w); 3215 ev_stat_stat (EV_A_ w);
2098 3216
2099 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3217 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2100 if ( 3218 if (
2101 w->prev.st_dev != w->attr.st_dev 3219 prev.st_dev != w->attr.st_dev
2102 || w->prev.st_ino != w->attr.st_ino 3220 || prev.st_ino != w->attr.st_ino
2103 || w->prev.st_mode != w->attr.st_mode 3221 || prev.st_mode != w->attr.st_mode
2104 || w->prev.st_nlink != w->attr.st_nlink 3222 || prev.st_nlink != w->attr.st_nlink
2105 || w->prev.st_uid != w->attr.st_uid 3223 || prev.st_uid != w->attr.st_uid
2106 || w->prev.st_gid != w->attr.st_gid 3224 || prev.st_gid != w->attr.st_gid
2107 || w->prev.st_rdev != w->attr.st_rdev 3225 || prev.st_rdev != w->attr.st_rdev
2108 || w->prev.st_size != w->attr.st_size 3226 || prev.st_size != w->attr.st_size
2109 || w->prev.st_atime != w->attr.st_atime 3227 || prev.st_atime != w->attr.st_atime
2110 || w->prev.st_mtime != w->attr.st_mtime 3228 || prev.st_mtime != w->attr.st_mtime
2111 || w->prev.st_ctime != w->attr.st_ctime 3229 || prev.st_ctime != w->attr.st_ctime
2112 ) { 3230 ) {
3231 /* we only update w->prev on actual differences */
3232 /* in case we test more often than invoke the callback, */
3233 /* to ensure that prev is always different to attr */
3234 w->prev = prev;
3235
2113 #if EV_USE_INOTIFY 3236 #if EV_USE_INOTIFY
3237 if (fs_fd >= 0)
3238 {
2114 infy_del (EV_A_ w); 3239 infy_del (EV_A_ w);
2115 infy_add (EV_A_ w); 3240 infy_add (EV_A_ w);
2116 ev_stat_stat (EV_A_ w); /* avoid race... */ 3241 ev_stat_stat (EV_A_ w); /* avoid race... */
3242 }
2117 #endif 3243 #endif
2118 3244
2119 ev_feed_event (EV_A_ w, EV_STAT); 3245 ev_feed_event (EV_A_ w, EV_STAT);
2120 } 3246 }
2121} 3247}
… …
2124ev_stat_start (EV_P_ ev_stat *w) 3250ev_stat_start (EV_P_ ev_stat *w)
2125{ 3251{
2126 if (expect_false (ev_is_active (w))) 3252 if (expect_false (ev_is_active (w)))
2127 return; 3253 return;
2128 3254
2129 /* since we use memcmp, we need to clear any padding data etc. */
2130 memset (&w->prev, 0, sizeof (ev_statdata));
2131 memset (&w->attr, 0, sizeof (ev_statdata));
2132
2133 ev_stat_stat (EV_A_ w); 3255 ev_stat_stat (EV_A_ w);
2134 3256
3257 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2135 if (w->interval < MIN_STAT_INTERVAL) 3258 w->interval = MIN_STAT_INTERVAL;
2136 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2137 3259
2138 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 3260 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2139 ev_set_priority (&w->timer, ev_priority (w)); 3261 ev_set_priority (&w->timer, ev_priority (w));
2140 3262
2141#if EV_USE_INOTIFY 3263#if EV_USE_INOTIFY
2142 infy_init (EV_A); 3264 infy_init (EV_A);
2143 3265
2144 if (fs_fd >= 0) 3266 if (fs_fd >= 0)
2145 infy_add (EV_A_ w); 3267 infy_add (EV_A_ w);
2146 else 3268 else
2147#endif 3269#endif
3270 {
2148 ev_timer_start (EV_A_ &w->timer); 3271 ev_timer_again (EV_A_ &w->timer);
3272 ev_unref (EV_A);
3273 }
2149 3274
2150 ev_start (EV_A_ (W)w, 1); 3275 ev_start (EV_A_ (W)w, 1);
3276
3277 EV_FREQUENT_CHECK;
2151} 3278}
2152 3279
2153void 3280void
2154ev_stat_stop (EV_P_ ev_stat *w) 3281ev_stat_stop (EV_P_ ev_stat *w)
2155{ 3282{
2156 clear_pending (EV_A_ (W)w); 3283 clear_pending (EV_A_ (W)w);
2157 if (expect_false (!ev_is_active (w))) 3284 if (expect_false (!ev_is_active (w)))
2158 return; 3285 return;
2159 3286
3287 EV_FREQUENT_CHECK;
3288
2160#if EV_USE_INOTIFY 3289#if EV_USE_INOTIFY
2161 infy_del (EV_A_ w); 3290 infy_del (EV_A_ w);
2162#endif 3291#endif
3292
3293 if (ev_is_active (&w->timer))
3294 {
3295 ev_ref (EV_A);
2163 ev_timer_stop (EV_A_ &w->timer); 3296 ev_timer_stop (EV_A_ &w->timer);
3297 }
2164 3298
2165 ev_stop (EV_A_ (W)w); 3299 ev_stop (EV_A_ (W)w);
3300
3301 EV_FREQUENT_CHECK;
2166} 3302}
2167#endif 3303#endif
2168 3304
2169#if EV_IDLE_ENABLE 3305#if EV_IDLE_ENABLE
2170void 3306void
… …
2172{ 3308{
2173 if (expect_false (ev_is_active (w))) 3309 if (expect_false (ev_is_active (w)))
2174 return; 3310 return;
2175 3311
2176 pri_adjust (EV_A_ (W)w); 3312 pri_adjust (EV_A_ (W)w);
3313
3314 EV_FREQUENT_CHECK;
2177 3315
2178 { 3316 {
2179 int active = ++idlecnt [ABSPRI (w)]; 3317 int active = ++idlecnt [ABSPRI (w)];
2180 3318
2181 ++idleall; 3319 ++idleall;
2182 ev_start (EV_A_ (W)w, active); 3320 ev_start (EV_A_ (W)w, active);
2183 3321
2184 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 3322 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2185 idles [ABSPRI (w)][active - 1] = w; 3323 idles [ABSPRI (w)][active - 1] = w;
2186 } 3324 }
3325
3326 EV_FREQUENT_CHECK;
2187} 3327}
2188 3328
2189void 3329void
2190ev_idle_stop (EV_P_ ev_idle *w) 3330ev_idle_stop (EV_P_ ev_idle *w)
2191{ 3331{
2192 clear_pending (EV_A_ (W)w); 3332 clear_pending (EV_A_ (W)w);
2193 if (expect_false (!ev_is_active (w))) 3333 if (expect_false (!ev_is_active (w)))
2194 return; 3334 return;
2195 3335
3336 EV_FREQUENT_CHECK;
3337
2196 { 3338 {
2197 int active = ((W)w)->active; 3339 int active = ev_active (w);
2198 3340
2199 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]]; 3341 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2200 ((W)idles [ABSPRI (w)][active - 1])->active = active; 3342 ev_active (idles [ABSPRI (w)][active - 1]) = active;
2201 3343
2202 ev_stop (EV_A_ (W)w); 3344 ev_stop (EV_A_ (W)w);
2203 --idleall; 3345 --idleall;
2204 } 3346 }
2205}
2206#endif
2207 3347
3348 EV_FREQUENT_CHECK;
3349}
3350#endif
3351
3352#if EV_PREPARE_ENABLE
2208void 3353void
2209ev_prepare_start (EV_P_ ev_prepare *w) 3354ev_prepare_start (EV_P_ ev_prepare *w)
2210{ 3355{
2211 if (expect_false (ev_is_active (w))) 3356 if (expect_false (ev_is_active (w)))
2212 return; 3357 return;
3358
3359 EV_FREQUENT_CHECK;
2213 3360
2214 ev_start (EV_A_ (W)w, ++preparecnt); 3361 ev_start (EV_A_ (W)w, ++preparecnt);
2215 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 3362 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2216 prepares [preparecnt - 1] = w; 3363 prepares [preparecnt - 1] = w;
3364
3365 EV_FREQUENT_CHECK;
2217} 3366}
2218 3367
2219void 3368void
2220ev_prepare_stop (EV_P_ ev_prepare *w) 3369ev_prepare_stop (EV_P_ ev_prepare *w)
2221{ 3370{
2222 clear_pending (EV_A_ (W)w); 3371 clear_pending (EV_A_ (W)w);
2223 if (expect_false (!ev_is_active (w))) 3372 if (expect_false (!ev_is_active (w)))
2224 return; 3373 return;
2225 3374
3375 EV_FREQUENT_CHECK;
3376
2226 { 3377 {
2227 int active = ((W)w)->active; 3378 int active = ev_active (w);
3379
2228 prepares [active - 1] = prepares [--preparecnt]; 3380 prepares [active - 1] = prepares [--preparecnt];
2229 ((W)prepares [active - 1])->active = active; 3381 ev_active (prepares [active - 1]) = active;
2230 } 3382 }
2231 3383
2232 ev_stop (EV_A_ (W)w); 3384 ev_stop (EV_A_ (W)w);
2233}
2234 3385
3386 EV_FREQUENT_CHECK;
3387}
3388#endif
3389
3390#if EV_CHECK_ENABLE
2235void 3391void
2236ev_check_start (EV_P_ ev_check *w) 3392ev_check_start (EV_P_ ev_check *w)
2237{ 3393{
2238 if (expect_false (ev_is_active (w))) 3394 if (expect_false (ev_is_active (w)))
2239 return; 3395 return;
3396
3397 EV_FREQUENT_CHECK;
2240 3398
2241 ev_start (EV_A_ (W)w, ++checkcnt); 3399 ev_start (EV_A_ (W)w, ++checkcnt);
2242 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 3400 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2243 checks [checkcnt - 1] = w; 3401 checks [checkcnt - 1] = w;
3402
3403 EV_FREQUENT_CHECK;
2244} 3404}
2245 3405
2246void 3406void
2247ev_check_stop (EV_P_ ev_check *w) 3407ev_check_stop (EV_P_ ev_check *w)
2248{ 3408{
2249 clear_pending (EV_A_ (W)w); 3409 clear_pending (EV_A_ (W)w);
2250 if (expect_false (!ev_is_active (w))) 3410 if (expect_false (!ev_is_active (w)))
2251 return; 3411 return;
2252 3412
3413 EV_FREQUENT_CHECK;
3414
2253 { 3415 {
2254 int active = ((W)w)->active; 3416 int active = ev_active (w);
3417
2255 checks [active - 1] = checks [--checkcnt]; 3418 checks [active - 1] = checks [--checkcnt];
2256 ((W)checks [active - 1])->active = active; 3419 ev_active (checks [active - 1]) = active;
2257 } 3420 }
2258 3421
2259 ev_stop (EV_A_ (W)w); 3422 ev_stop (EV_A_ (W)w);
3423
3424 EV_FREQUENT_CHECK;
2260} 3425}
3426#endif
2261 3427
2262#if EV_EMBED_ENABLE 3428#if EV_EMBED_ENABLE
2263void noinline 3429void noinline
2264ev_embed_sweep (EV_P_ ev_embed *w) 3430ev_embed_sweep (EV_P_ ev_embed *w)
2265{ 3431{
2266 ev_loop (w->other, EVLOOP_NONBLOCK); 3432 ev_run (w->other, EVRUN_NOWAIT);
2267} 3433}
2268 3434
2269static void 3435static void
2270embed_io_cb (EV_P_ ev_io *io, int revents) 3436embed_io_cb (EV_P_ ev_io *io, int revents)
2271{ 3437{
2272 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 3438 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2273 3439
2274 if (ev_cb (w)) 3440 if (ev_cb (w))
2275 ev_feed_event (EV_A_ (W)w, EV_EMBED); 3441 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2276 else 3442 else
2277 ev_loop (w->other, EVLOOP_NONBLOCK); 3443 ev_run (w->other, EVRUN_NOWAIT);
2278} 3444}
2279 3445
2280static void 3446static void
2281embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3447embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2282{ 3448{
2283 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3449 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2284 3450
2285 { 3451 {
2286 struct ev_loop *loop = w->other; 3452 EV_P = w->other;
2287 3453
2288 while (fdchangecnt) 3454 while (fdchangecnt)
2289 { 3455 {
2290 fd_reify (EV_A); 3456 fd_reify (EV_A);
2291 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3457 ev_run (EV_A_ EVRUN_NOWAIT);
2292 } 3458 }
2293 } 3459 }
3460}
3461
3462static void
3463embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
3464{
3465 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3466
3467 ev_embed_stop (EV_A_ w);
3468
3469 {
3470 EV_P = w->other;
3471
3472 ev_loop_fork (EV_A);
3473 ev_run (EV_A_ EVRUN_NOWAIT);
3474 }
3475
3476 ev_embed_start (EV_A_ w);
2294} 3477}
2295 3478
2296#if 0 3479#if 0
2297static void 3480static void
2298embed_idle_cb (EV_P_ ev_idle *idle, int revents) 3481embed_idle_cb (EV_P_ ev_idle *idle, int revents)
… …
2306{ 3489{
2307 if (expect_false (ev_is_active (w))) 3490 if (expect_false (ev_is_active (w)))
2308 return; 3491 return;
2309 3492
2310 { 3493 {
2311 struct ev_loop *loop = w->other; 3494 EV_P = w->other;
2312 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3495 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2313 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 3496 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2314 } 3497 }
3498
3499 EV_FREQUENT_CHECK;
2315 3500
2316 ev_set_priority (&w->io, ev_priority (w)); 3501 ev_set_priority (&w->io, ev_priority (w));
2317 ev_io_start (EV_A_ &w->io); 3502 ev_io_start (EV_A_ &w->io);
2318 3503
2319 ev_prepare_init (&w->prepare, embed_prepare_cb); 3504 ev_prepare_init (&w->prepare, embed_prepare_cb);
2320 ev_set_priority (&w->prepare, EV_MINPRI); 3505 ev_set_priority (&w->prepare, EV_MINPRI);
2321 ev_prepare_start (EV_A_ &w->prepare); 3506 ev_prepare_start (EV_A_ &w->prepare);
2322 3507
3508 ev_fork_init (&w->fork, embed_fork_cb);
3509 ev_fork_start (EV_A_ &w->fork);
3510
2323 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 3511 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2324 3512
2325 ev_start (EV_A_ (W)w, 1); 3513 ev_start (EV_A_ (W)w, 1);
3514
3515 EV_FREQUENT_CHECK;
2326} 3516}
2327 3517
2328void 3518void
2329ev_embed_stop (EV_P_ ev_embed *w) 3519ev_embed_stop (EV_P_ ev_embed *w)
2330{ 3520{
2331 clear_pending (EV_A_ (W)w); 3521 clear_pending (EV_A_ (W)w);
2332 if (expect_false (!ev_is_active (w))) 3522 if (expect_false (!ev_is_active (w)))
2333 return; 3523 return;
2334 3524
3525 EV_FREQUENT_CHECK;
3526
2335 ev_io_stop (EV_A_ &w->io); 3527 ev_io_stop (EV_A_ &w->io);
2336 ev_prepare_stop (EV_A_ &w->prepare); 3528 ev_prepare_stop (EV_A_ &w->prepare);
3529 ev_fork_stop (EV_A_ &w->fork);
2337 3530
2338 ev_stop (EV_A_ (W)w); 3531 ev_stop (EV_A_ (W)w);
3532
3533 EV_FREQUENT_CHECK;
2339} 3534}
2340#endif 3535#endif
2341 3536
2342#if EV_FORK_ENABLE 3537#if EV_FORK_ENABLE
2343void 3538void
2344ev_fork_start (EV_P_ ev_fork *w) 3539ev_fork_start (EV_P_ ev_fork *w)
2345{ 3540{
2346 if (expect_false (ev_is_active (w))) 3541 if (expect_false (ev_is_active (w)))
2347 return; 3542 return;
3543
3544 EV_FREQUENT_CHECK;
2348 3545
2349 ev_start (EV_A_ (W)w, ++forkcnt); 3546 ev_start (EV_A_ (W)w, ++forkcnt);
2350 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 3547 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2351 forks [forkcnt - 1] = w; 3548 forks [forkcnt - 1] = w;
3549
3550 EV_FREQUENT_CHECK;
2352} 3551}
2353 3552
2354void 3553void
2355ev_fork_stop (EV_P_ ev_fork *w) 3554ev_fork_stop (EV_P_ ev_fork *w)
2356{ 3555{
2357 clear_pending (EV_A_ (W)w); 3556 clear_pending (EV_A_ (W)w);
2358 if (expect_false (!ev_is_active (w))) 3557 if (expect_false (!ev_is_active (w)))
2359 return; 3558 return;
2360 3559
3560 EV_FREQUENT_CHECK;
3561
2361 { 3562 {
2362 int active = ((W)w)->active; 3563 int active = ev_active (w);
3564
2363 forks [active - 1] = forks [--forkcnt]; 3565 forks [active - 1] = forks [--forkcnt];
2364 ((W)forks [active - 1])->active = active; 3566 ev_active (forks [active - 1]) = active;
2365 } 3567 }
2366 3568
2367 ev_stop (EV_A_ (W)w); 3569 ev_stop (EV_A_ (W)w);
3570
3571 EV_FREQUENT_CHECK;
3572}
3573#endif
3574
3575#if EV_CLEANUP_ENABLE
3576void
3577ev_cleanup_start (EV_P_ ev_cleanup *w)
3578{
3579 if (expect_false (ev_is_active (w)))
3580 return;
3581
3582 EV_FREQUENT_CHECK;
3583
3584 ev_start (EV_A_ (W)w, ++cleanupcnt);
3585 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
3586 cleanups [cleanupcnt - 1] = w;
3587
3588 EV_FREQUENT_CHECK;
3589}
3590
3591void
3592ev_cleanup_stop (EV_P_ ev_cleanup *w)
3593{
3594 clear_pending (EV_A_ (W)w);
3595 if (expect_false (!ev_is_active (w)))
3596 return;
3597
3598 EV_FREQUENT_CHECK;
3599
3600 {
3601 int active = ev_active (w);
3602
3603 cleanups [active - 1] = cleanups [--cleanupcnt];
3604 ev_active (cleanups [active - 1]) = active;
3605 }
3606
3607 ev_stop (EV_A_ (W)w);
3608
3609 EV_FREQUENT_CHECK;
3610}
3611#endif
3612
3613#if EV_ASYNC_ENABLE
3614void
3615ev_async_start (EV_P_ ev_async *w)
3616{
3617 if (expect_false (ev_is_active (w)))
3618 return;
3619
3620 w->sent = 0;
3621
3622 evpipe_init (EV_A);
3623
3624 EV_FREQUENT_CHECK;
3625
3626 ev_start (EV_A_ (W)w, ++asynccnt);
3627 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
3628 asyncs [asynccnt - 1] = w;
3629
3630 EV_FREQUENT_CHECK;
3631}
3632
3633void
3634ev_async_stop (EV_P_ ev_async *w)
3635{
3636 clear_pending (EV_A_ (W)w);
3637 if (expect_false (!ev_is_active (w)))
3638 return;
3639
3640 EV_FREQUENT_CHECK;
3641
3642 {
3643 int active = ev_active (w);
3644
3645 asyncs [active - 1] = asyncs [--asynccnt];
3646 ev_active (asyncs [active - 1]) = active;
3647 }
3648
3649 ev_stop (EV_A_ (W)w);
3650
3651 EV_FREQUENT_CHECK;
3652}
3653
3654void
3655ev_async_send (EV_P_ ev_async *w)
3656{
3657 w->sent = 1;
3658 evpipe_write (EV_A_ &async_pending);
2368} 3659}
2369#endif 3660#endif
2370 3661
2371/*****************************************************************************/ 3662/*****************************************************************************/
2372 3663
… …
2382once_cb (EV_P_ struct ev_once *once, int revents) 3673once_cb (EV_P_ struct ev_once *once, int revents)
2383{ 3674{
2384 void (*cb)(int revents, void *arg) = once->cb; 3675 void (*cb)(int revents, void *arg) = once->cb;
2385 void *arg = once->arg; 3676 void *arg = once->arg;
2386 3677
2387 ev_io_stop (EV_A_ &once->io); 3678 ev_io_stop (EV_A_ &once->io);
2388 ev_timer_stop (EV_A_ &once->to); 3679 ev_timer_stop (EV_A_ &once->to);
2389 ev_free (once); 3680 ev_free (once);
2390 3681
2391 cb (revents, arg); 3682 cb (revents, arg);
2392} 3683}
2393 3684
2394static void 3685static void
2395once_cb_io (EV_P_ ev_io *w, int revents) 3686once_cb_io (EV_P_ ev_io *w, int revents)
2396{ 3687{
2397 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 3688 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
3689
3690 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2398} 3691}
2399 3692
2400static void 3693static void
2401once_cb_to (EV_P_ ev_timer *w, int revents) 3694once_cb_to (EV_P_ ev_timer *w, int revents)
2402{ 3695{
2403 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 3696 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
3697
3698 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2404} 3699}
2405 3700
2406void 3701void
2407ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 3702ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2408{ 3703{
2409 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 3704 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
2410 3705
2411 if (expect_false (!once)) 3706 if (expect_false (!once))
2412 { 3707 {
2413 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 3708 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
2414 return; 3709 return;
2415 } 3710 }
2416 3711
2417 once->cb = cb; 3712 once->cb = cb;
2418 once->arg = arg; 3713 once->arg = arg;
… …
2430 ev_timer_set (&once->to, timeout, 0.); 3725 ev_timer_set (&once->to, timeout, 0.);
2431 ev_timer_start (EV_A_ &once->to); 3726 ev_timer_start (EV_A_ &once->to);
2432 } 3727 }
2433} 3728}
2434 3729
3730/*****************************************************************************/
3731
3732#if EV_WALK_ENABLE
3733void
3734ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3735{
3736 int i, j;
3737 ev_watcher_list *wl, *wn;
3738
3739 if (types & (EV_IO | EV_EMBED))
3740 for (i = 0; i < anfdmax; ++i)
3741 for (wl = anfds [i].head; wl; )
3742 {
3743 wn = wl->next;
3744
3745#if EV_EMBED_ENABLE
3746 if (ev_cb ((ev_io *)wl) == embed_io_cb)
3747 {
3748 if (types & EV_EMBED)
3749 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
3750 }
3751 else
3752#endif
3753#if EV_USE_INOTIFY
3754 if (ev_cb ((ev_io *)wl) == infy_cb)
3755 ;
3756 else
3757#endif
3758 if ((ev_io *)wl != &pipe_w)
3759 if (types & EV_IO)
3760 cb (EV_A_ EV_IO, wl);
3761
3762 wl = wn;
3763 }
3764
3765 if (types & (EV_TIMER | EV_STAT))
3766 for (i = timercnt + HEAP0; i-- > HEAP0; )
3767#if EV_STAT_ENABLE
3768 /*TODO: timer is not always active*/
3769 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
3770 {
3771 if (types & EV_STAT)
3772 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
3773 }
3774 else
3775#endif
3776 if (types & EV_TIMER)
3777 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
3778
3779#if EV_PERIODIC_ENABLE
3780 if (types & EV_PERIODIC)
3781 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
3782 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3783#endif
3784
3785#if EV_IDLE_ENABLE
3786 if (types & EV_IDLE)
3787 for (j = NUMPRI; i--; )
3788 for (i = idlecnt [j]; i--; )
3789 cb (EV_A_ EV_IDLE, idles [j][i]);
3790#endif
3791
3792#if EV_FORK_ENABLE
3793 if (types & EV_FORK)
3794 for (i = forkcnt; i--; )
3795 if (ev_cb (forks [i]) != embed_fork_cb)
3796 cb (EV_A_ EV_FORK, forks [i]);
3797#endif
3798
3799#if EV_ASYNC_ENABLE
3800 if (types & EV_ASYNC)
3801 for (i = asynccnt; i--; )
3802 cb (EV_A_ EV_ASYNC, asyncs [i]);
3803#endif
3804
3805#if EV_PREPARE_ENABLE
3806 if (types & EV_PREPARE)
3807 for (i = preparecnt; i--; )
3808# if EV_EMBED_ENABLE
3809 if (ev_cb (prepares [i]) != embed_prepare_cb)
3810# endif
3811 cb (EV_A_ EV_PREPARE, prepares [i]);
3812#endif
3813
3814#if EV_CHECK_ENABLE
3815 if (types & EV_CHECK)
3816 for (i = checkcnt; i--; )
3817 cb (EV_A_ EV_CHECK, checks [i]);
3818#endif
3819
3820#if EV_SIGNAL_ENABLE
3821 if (types & EV_SIGNAL)
3822 for (i = 0; i < EV_NSIG - 1; ++i)
3823 for (wl = signals [i].head; wl; )
3824 {
3825 wn = wl->next;
3826 cb (EV_A_ EV_SIGNAL, wl);
3827 wl = wn;
3828 }
3829#endif
3830
3831#if EV_CHILD_ENABLE
3832 if (types & EV_CHILD)
3833 for (i = (EV_PID_HASHSIZE); i--; )
3834 for (wl = childs [i]; wl; )
3835 {
3836 wn = wl->next;
3837 cb (EV_A_ EV_CHILD, wl);
3838 wl = wn;
3839 }
3840#endif
3841/* EV_STAT 0x00001000 /* stat data changed */
3842/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3843}
3844#endif
3845
2435#if EV_MULTIPLICITY 3846#if EV_MULTIPLICITY
2436 #include "ev_wrap.h" 3847 #include "ev_wrap.h"
2437#endif 3848#endif
2438 3849
2439#ifdef __cplusplus 3850EV_CPP(})
2440}
2441#endif
2442 3851

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