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Comparing libev/ev.c (file contents):
Revision 1.193 by root, Sat Dec 22 05:47:58 2007 UTC vs.
Revision 1.357 by root, Sat Oct 23 22:25:44 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
507#if EV_USE_MONOTONIC
285static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 508static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
509#endif
510
511#ifndef EV_FD_TO_WIN32_HANDLE
512# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
513#endif
514#ifndef EV_WIN32_HANDLE_TO_FD
515# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
516#endif
517#ifndef EV_WIN32_CLOSE_FD
518# define EV_WIN32_CLOSE_FD(fd) close (fd)
519#endif
286 520
287#ifdef _WIN32 521#ifdef _WIN32
288# include "ev_win32.c" 522# include "ev_win32.c"
289#endif 523#endif
290 524
291/*****************************************************************************/ 525/*****************************************************************************/
292 526
527#ifdef __linux
528# include <sys/utsname.h>
529#endif
530
531static unsigned int noinline
532ev_linux_version (void)
533{
534#ifdef __linux
535 struct utsname buf;
536 unsigned int v;
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
293static void (*syserr_cb)(const char *msg); 577static void (*syserr_cb)(const char *msg);
294 578
295void 579void
296ev_set_syserr_cb (void (*cb)(const char *msg)) 580ev_set_syserr_cb (void (*cb)(const char *msg))
297{ 581{
298 syserr_cb = cb; 582 syserr_cb = cb;
299} 583}
300 584
301static void noinline 585static void noinline
302syserr (const char *msg) 586ev_syserr (const char *msg)
303{ 587{
304 if (!msg) 588 if (!msg)
305 msg = "(libev) system error"; 589 msg = "(libev) system error";
306 590
307 if (syserr_cb) 591 if (syserr_cb)
308 syserr_cb (msg); 592 syserr_cb (msg);
309 else 593 else
310 { 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
311 perror (msg); 603 perror (msg);
604#endif
312 abort (); 605 abort ();
313 } 606 }
314} 607}
315 608
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
316static void *(*alloc)(void *ptr, long size); 628static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
317 629
318void 630void
319ev_set_allocator (void *(*cb)(void *ptr, long size)) 631ev_set_allocator (void *(*cb)(void *ptr, long size))
320{ 632{
321 alloc = cb; 633 alloc = cb;
322} 634}
323 635
324inline_speed void * 636inline_speed void *
325ev_realloc (void *ptr, long size) 637ev_realloc (void *ptr, long size)
326{ 638{
327 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); 639 ptr = alloc (ptr, size);
328 640
329 if (!ptr && size) 641 if (!ptr && size)
330 { 642 {
643#if EV_AVOID_STDIO
644 ev_printerr ("libev: memory allocation failed, aborting.\n");
645#else
331 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 646 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
647#endif
332 abort (); 648 abort ();
333 } 649 }
334 650
335 return ptr; 651 return ptr;
336} 652}
… …
338#define ev_malloc(size) ev_realloc (0, (size)) 654#define ev_malloc(size) ev_realloc (0, (size))
339#define ev_free(ptr) ev_realloc ((ptr), 0) 655#define ev_free(ptr) ev_realloc ((ptr), 0)
340 656
341/*****************************************************************************/ 657/*****************************************************************************/
342 658
659/* set in reify when reification needed */
660#define EV_ANFD_REIFY 1
661
662/* file descriptor info structure */
343typedef struct 663typedef struct
344{ 664{
345 WL head; 665 WL head;
346 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 */
347 unsigned char reify; 669 unsigned char unused;
670#if EV_USE_EPOLL
671 unsigned int egen; /* generation counter to counter epoll bugs */
672#endif
348#if EV_SELECT_IS_WINSOCKET 673#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
349 SOCKET handle; 674 SOCKET handle;
350#endif 675#endif
676#if EV_USE_IOCP
677 OVERLAPPED or, ow;
678#endif
351} ANFD; 679} ANFD;
352 680
681/* stores the pending event set for a given watcher */
353typedef struct 682typedef struct
354{ 683{
355 W w; 684 W w;
356 int events; 685 int events; /* the pending event set for the given watcher */
357} ANPENDING; 686} ANPENDING;
358 687
359#if EV_USE_INOTIFY 688#if EV_USE_INOTIFY
689/* hash table entry per inotify-id */
360typedef struct 690typedef struct
361{ 691{
362 WL head; 692 WL head;
363} 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)
364#endif 714#endif
365 715
366#if EV_MULTIPLICITY 716#if EV_MULTIPLICITY
367 717
368 struct ev_loop 718 struct ev_loop
… …
387 737
388 static int ev_default_loop_ptr; 738 static int ev_default_loop_ptr;
389 739
390#endif 740#endif
391 741
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
392/*****************************************************************************/ 754/*****************************************************************************/
393 755
756#ifndef EV_HAVE_EV_TIME
394ev_tstamp 757ev_tstamp
395ev_time (void) 758ev_time (void)
396{ 759{
397#if EV_USE_REALTIME 760#if EV_USE_REALTIME
761 if (expect_true (have_realtime))
762 {
398 struct timespec ts; 763 struct timespec ts;
399 clock_gettime (CLOCK_REALTIME, &ts); 764 clock_gettime (CLOCK_REALTIME, &ts);
400 return ts.tv_sec + ts.tv_nsec * 1e-9; 765 return ts.tv_sec + ts.tv_nsec * 1e-9;
401#else 766 }
767#endif
768
402 struct timeval tv; 769 struct timeval tv;
403 gettimeofday (&tv, 0); 770 gettimeofday (&tv, 0);
404 return tv.tv_sec + tv.tv_usec * 1e-6; 771 return tv.tv_sec + tv.tv_usec * 1e-6;
405#endif
406} 772}
773#endif
407 774
408ev_tstamp inline_size 775inline_size ev_tstamp
409get_clock (void) 776get_clock (void)
410{ 777{
411#if EV_USE_MONOTONIC 778#if EV_USE_MONOTONIC
412 if (expect_true (have_monotonic)) 779 if (expect_true (have_monotonic))
413 { 780 {
… …
434 if (delay > 0.) 801 if (delay > 0.)
435 { 802 {
436#if EV_USE_NANOSLEEP 803#if EV_USE_NANOSLEEP
437 struct timespec ts; 804 struct timespec ts;
438 805
439 ts.tv_sec = (time_t)delay; 806 EV_TS_SET (ts, delay);
440 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
441
442 nanosleep (&ts, 0); 807 nanosleep (&ts, 0);
443#elif defined(_WIN32) 808#elif defined(_WIN32)
444 Sleep (delay * 1e3); 809 Sleep ((unsigned long)(delay * 1e3));
445#else 810#else
446 struct timeval tv; 811 struct timeval tv;
447 812
448 tv.tv_sec = (time_t)delay; 813 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
449 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); 814 /* something not guaranteed by newer posix versions, but guaranteed */
450 815 /* by older ones */
816 EV_TV_SET (tv, delay);
451 select (0, 0, 0, 0, &tv); 817 select (0, 0, 0, 0, &tv);
452#endif 818#endif
453 } 819 }
454} 820}
455 821
456/*****************************************************************************/ 822/*****************************************************************************/
457 823
458int 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
459array_nextsize (int elem, int cur, int cnt) 829array_nextsize (int elem, int cur, int cnt)
460{ 830{
461 int ncur = cur + 1; 831 int ncur = cur + 1;
462 832
463 do 833 do
464 ncur <<= 1; 834 ncur <<= 1;
465 while (cnt > ncur); 835 while (cnt > ncur);
466 836
467 /* 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 */
468 if (elem * ncur > 4096) 838 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
469 { 839 {
470 ncur *= elem; 840 ncur *= elem;
471 ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095; 841 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
472 ncur = ncur - sizeof (void *) * 4; 842 ncur = ncur - sizeof (void *) * 4;
473 ncur /= elem; 843 ncur /= elem;
474 } 844 }
475 845
476 return ncur; 846 return ncur;
… …
480array_realloc (int elem, void *base, int *cur, int cnt) 850array_realloc (int elem, void *base, int *cur, int cnt)
481{ 851{
482 *cur = array_nextsize (elem, *cur, cnt); 852 *cur = array_nextsize (elem, *cur, cnt);
483 return ev_realloc (base, elem * *cur); 853 return ev_realloc (base, elem * *cur);
484} 854}
855
856#define array_init_zero(base,count) \
857 memset ((void *)(base), 0, sizeof (*(base)) * (count))
485 858
486#define array_needsize(type,base,cur,cnt,init) \ 859#define array_needsize(type,base,cur,cnt,init) \
487 if (expect_false ((cnt) > (cur))) \ 860 if (expect_false ((cnt) > (cur))) \
488 { \ 861 { \
489 int ocur_ = (cur); \ 862 int ocur_ = (cur); \
… …
501 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 874 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
502 } 875 }
503#endif 876#endif
504 877
505#define array_free(stem, idx) \ 878#define array_free(stem, idx) \
506 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
507 880
508/*****************************************************************************/ 881/*****************************************************************************/
882
883/* dummy callback for pending events */
884static void noinline
885pendingcb (EV_P_ ev_prepare *w, int revents)
886{
887}
509 888
510void noinline 889void noinline
511ev_feed_event (EV_P_ void *w, int revents) 890ev_feed_event (EV_P_ void *w, int revents)
512{ 891{
513 W w_ = (W)w; 892 W w_ = (W)w;
… …
522 pendings [pri][w_->pending - 1].w = w_; 901 pendings [pri][w_->pending - 1].w = w_;
523 pendings [pri][w_->pending - 1].events = revents; 902 pendings [pri][w_->pending - 1].events = revents;
524 } 903 }
525} 904}
526 905
527void 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
528queue_events (EV_P_ W *events, int eventcnt, int type) 922queue_events (EV_P_ W *events, int eventcnt, int type)
529{ 923{
530 int i; 924 int i;
531 925
532 for (i = 0; i < eventcnt; ++i) 926 for (i = 0; i < eventcnt; ++i)
533 ev_feed_event (EV_A_ events [i], type); 927 ev_feed_event (EV_A_ events [i], type);
534} 928}
535 929
536/*****************************************************************************/ 930/*****************************************************************************/
537 931
538void inline_size 932inline_speed void
539anfds_init (ANFD *base, int count)
540{
541 while (count--)
542 {
543 base->head = 0;
544 base->events = EV_NONE;
545 base->reify = 0;
546
547 ++base;
548 }
549}
550
551void inline_speed
552fd_event (EV_P_ int fd, int revents) 933fd_event_nocheck (EV_P_ int fd, int revents)
553{ 934{
554 ANFD *anfd = anfds + fd; 935 ANFD *anfd = anfds + fd;
555 ev_io *w; 936 ev_io *w;
556 937
557 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)
… …
561 if (ev) 942 if (ev)
562 ev_feed_event (EV_A_ (W)w, ev); 943 ev_feed_event (EV_A_ (W)w, ev);
563 } 944 }
564} 945}
565 946
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
566void 958void
567ev_feed_fd_event (EV_P_ int fd, int revents) 959ev_feed_fd_event (EV_P_ int fd, int revents)
568{ 960{
569 if (fd >= 0 && fd < anfdmax) 961 if (fd >= 0 && fd < anfdmax)
570 fd_event (EV_A_ fd, revents); 962 fd_event_nocheck (EV_A_ fd, revents);
571} 963}
572 964
573void inline_size 965/* make sure the external fd watch events are in-sync */
966/* with the kernel/libev internal state */
967inline_size void
574fd_reify (EV_P) 968fd_reify (EV_P)
575{ 969{
576 int i; 970 int i;
577 971
578 for (i = 0; i < fdchangecnt; ++i) 972 for (i = 0; i < fdchangecnt; ++i)
579 { 973 {
580 int fd = fdchanges [i]; 974 int fd = fdchanges [i];
581 ANFD *anfd = anfds + fd; 975 ANFD *anfd = anfds + fd;
582 ev_io *w; 976 ev_io *w;
583 977
584 unsigned char events = 0; 978 unsigned char o_events = anfd->events;
979 unsigned char o_reify = anfd->reify;
585 980
586 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 981 anfd->reify = 0;
587 events |= (unsigned char)w->events;
588 982
589#if EV_SELECT_IS_WINSOCKET 983#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
590 if (events) 984 if (o_reify & EV__IOFDSET)
591 { 985 {
592 unsigned long argp; 986 unsigned long arg;
593 anfd->handle = _get_osfhandle (fd); 987 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
594 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
595 } 990 }
596#endif 991#endif
597 992
993 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
598 { 994 {
599 unsigned char o_events = anfd->events;
600 unsigned char o_reify = anfd->reify;
601
602 anfd->reify = 0;
603 anfd->events = events; 995 anfd->events = 0;
604 996
605 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)
606 backend_modify (EV_A_ fd, o_events, events); 1005 backend_modify (EV_A_ fd, o_events, anfd->events);
607 }
608 } 1006 }
609 1007
610 fdchangecnt = 0; 1008 fdchangecnt = 0;
611} 1009}
612 1010
613void inline_size 1011/* something about the given fd changed */
1012inline_size void
614fd_change (EV_P_ int fd, int flags) 1013fd_change (EV_P_ int fd, int flags)
615{ 1014{
616 unsigned char reify = anfds [fd].reify; 1015 unsigned char reify = anfds [fd].reify;
617 anfds [fd].reify |= flags; 1016 anfds [fd].reify |= flags;
618 1017
… …
622 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 1021 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
623 fdchanges [fdchangecnt - 1] = fd; 1022 fdchanges [fdchangecnt - 1] = fd;
624 } 1023 }
625} 1024}
626 1025
627void inline_speed 1026/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1027inline_speed void
628fd_kill (EV_P_ int fd) 1028fd_kill (EV_P_ int fd)
629{ 1029{
630 ev_io *w; 1030 ev_io *w;
631 1031
632 while ((w = (ev_io *)anfds [fd].head)) 1032 while ((w = (ev_io *)anfds [fd].head))
… …
634 ev_io_stop (EV_A_ w); 1034 ev_io_stop (EV_A_ w);
635 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);
636 } 1036 }
637} 1037}
638 1038
639int inline_size 1039/* check whether the given fd is actually valid, for error recovery */
1040inline_size int
640fd_valid (int fd) 1041fd_valid (int fd)
641{ 1042{
642#ifdef _WIN32 1043#ifdef _WIN32
643 return _get_osfhandle (fd) != -1; 1044 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
644#else 1045#else
645 return fcntl (fd, F_GETFD) != -1; 1046 return fcntl (fd, F_GETFD) != -1;
646#endif 1047#endif
647} 1048}
648 1049
… …
652{ 1053{
653 int fd; 1054 int fd;
654 1055
655 for (fd = 0; fd < anfdmax; ++fd) 1056 for (fd = 0; fd < anfdmax; ++fd)
656 if (anfds [fd].events) 1057 if (anfds [fd].events)
657 if (!fd_valid (fd) == -1 && errno == EBADF) 1058 if (!fd_valid (fd) && errno == EBADF)
658 fd_kill (EV_A_ fd); 1059 fd_kill (EV_A_ fd);
659} 1060}
660 1061
661/* 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 */
662static void noinline 1063static void noinline
… …
666 1067
667 for (fd = anfdmax; fd--; ) 1068 for (fd = anfdmax; fd--; )
668 if (anfds [fd].events) 1069 if (anfds [fd].events)
669 { 1070 {
670 fd_kill (EV_A_ fd); 1071 fd_kill (EV_A_ fd);
671 return; 1072 break;
672 } 1073 }
673} 1074}
674 1075
675/* 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 */
676static void noinline 1077static void noinline
… …
680 1081
681 for (fd = 0; fd < anfdmax; ++fd) 1082 for (fd = 0; fd < anfdmax; ++fd)
682 if (anfds [fd].events) 1083 if (anfds [fd].events)
683 { 1084 {
684 anfds [fd].events = 0; 1085 anfds [fd].events = 0;
1086 anfds [fd].emask = 0;
685 fd_change (EV_A_ fd, EV_IOFDSET | 1); 1087 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
686 } 1088 }
687} 1089}
688 1090
689/*****************************************************************************/ 1091/* used to prepare libev internal fd's */
690 1092/* this is not fork-safe */
691void inline_speed 1093inline_speed void
692upheap (WT *heap, int k)
693{
694 WT w = heap [k];
695
696 while (k)
697 {
698 int p = (k - 1) >> 1;
699
700 if (heap [p]->at <= w->at)
701 break;
702
703 heap [k] = heap [p];
704 ((W)heap [k])->active = k + 1;
705 k = p;
706 }
707
708 heap [k] = w;
709 ((W)heap [k])->active = k + 1;
710}
711
712void inline_speed
713downheap (WT *heap, int N, int k)
714{
715 WT w = heap [k];
716
717 for (;;)
718 {
719 int c = (k << 1) + 1;
720
721 if (c >= N)
722 break;
723
724 c += c + 1 < N && heap [c]->at > heap [c + 1]->at
725 ? 1 : 0;
726
727 if (w->at <= heap [c]->at)
728 break;
729
730 heap [k] = heap [c];
731 ((W)heap [k])->active = k + 1;
732
733 k = c;
734 }
735
736 heap [k] = w;
737 ((W)heap [k])->active = k + 1;
738}
739
740void inline_size
741adjustheap (WT *heap, int N, int k)
742{
743 upheap (heap, k);
744 downheap (heap, N, k);
745}
746
747/*****************************************************************************/
748
749typedef struct
750{
751 WL head;
752 sig_atomic_t volatile gotsig;
753} ANSIG;
754
755static ANSIG *signals;
756static int signalmax;
757
758static int sigpipe [2];
759static sig_atomic_t volatile gotsig;
760static ev_io sigev;
761
762void inline_size
763signals_init (ANSIG *base, int count)
764{
765 while (count--)
766 {
767 base->head = 0;
768 base->gotsig = 0;
769
770 ++base;
771 }
772}
773
774static void
775sighandler (int signum)
776{
777#if _WIN32
778 signal (signum, sighandler);
779#endif
780
781 signals [signum - 1].gotsig = 1;
782
783 if (!gotsig)
784 {
785 int old_errno = errno;
786 gotsig = 1;
787 write (sigpipe [1], &signum, 1);
788 errno = old_errno;
789 }
790}
791
792void noinline
793ev_feed_signal_event (EV_P_ int signum)
794{
795 WL w;
796
797#if EV_MULTIPLICITY
798 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
799#endif
800
801 --signum;
802
803 if (signum < 0 || signum >= signalmax)
804 return;
805
806 signals [signum].gotsig = 0;
807
808 for (w = signals [signum].head; w; w = w->next)
809 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
810}
811
812static void
813sigcb (EV_P_ ev_io *iow, int revents)
814{
815 int signum;
816
817 read (sigpipe [0], &revents, 1);
818 gotsig = 0;
819
820 for (signum = signalmax; signum--; )
821 if (signals [signum].gotsig)
822 ev_feed_signal_event (EV_A_ signum + 1);
823}
824
825void inline_speed
826fd_intern (int fd) 1094fd_intern (int fd)
827{ 1095{
828#ifdef _WIN32 1096#ifdef _WIN32
829 int arg = 1; 1097 unsigned long arg = 1;
830 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 1098 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
831#else 1099#else
832 fcntl (fd, F_SETFD, FD_CLOEXEC); 1100 fcntl (fd, F_SETFD, FD_CLOEXEC);
833 fcntl (fd, F_SETFL, O_NONBLOCK); 1101 fcntl (fd, F_SETFL, O_NONBLOCK);
834#endif 1102#endif
835} 1103}
836 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
837static void noinline 1268static void noinline
838siginit (EV_P) 1269evpipe_init (EV_P)
839{ 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
840 fd_intern (sigpipe [0]); 1290 fd_intern (evpipe [0]);
841 fd_intern (sigpipe [1]); 1291 fd_intern (evpipe [1]);
1292 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1293 }
842 1294
843 ev_io_set (&sigev, sigpipe [0], EV_READ);
844 ev_io_start (EV_A_ &sigev); 1295 ev_io_start (EV_A_ &pipe_w);
845 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
846} 1372}
847 1373
848/*****************************************************************************/ 1374/*****************************************************************************/
849 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
850static WL childs [EV_PID_HASHSIZE]; 1440static WL childs [EV_PID_HASHSIZE];
851 1441
852#ifndef _WIN32
853
854static ev_signal childev; 1442static ev_signal childev;
855 1443
856void inline_speed 1444#ifndef WIFCONTINUED
1445# define WIFCONTINUED(status) 0
1446#endif
1447
1448/* handle a single child status event */
1449inline_speed void
857child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status) 1450child_reap (EV_P_ int chain, int pid, int status)
858{ 1451{
859 ev_child *w; 1452 ev_child *w;
1453 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
860 1454
861 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 {
862 if (w->pid == pid || !w->pid) 1457 if ((w->pid == pid || !w->pid)
1458 && (!traced || (w->flags & 1)))
863 { 1459 {
864 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 */
865 w->rpid = pid; 1461 w->rpid = pid;
866 w->rstatus = status; 1462 w->rstatus = status;
867 ev_feed_event (EV_A_ (W)w, EV_CHILD); 1463 ev_feed_event (EV_A_ (W)w, EV_CHILD);
868 } 1464 }
1465 }
869} 1466}
870 1467
871#ifndef WCONTINUED 1468#ifndef WCONTINUED
872# define WCONTINUED 0 1469# define WCONTINUED 0
873#endif 1470#endif
874 1471
1472/* called on sigchld etc., calls waitpid */
875static void 1473static void
876childcb (EV_P_ ev_signal *sw, int revents) 1474childcb (EV_P_ ev_signal *sw, int revents)
877{ 1475{
878 int pid, status; 1476 int pid, status;
879 1477
… …
882 if (!WCONTINUED 1480 if (!WCONTINUED
883 || errno != EINVAL 1481 || errno != EINVAL
884 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED))) 1482 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
885 return; 1483 return;
886 1484
887 /* 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 */
888 /* 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 */
889 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1487 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
890 1488
891 child_reap (EV_A_ sw, pid, pid, status); 1489 child_reap (EV_A_ pid, pid, status);
892 if (EV_PID_HASHSIZE > 1) 1490 if ((EV_PID_HASHSIZE) > 1)
893 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 */
894} 1492}
895 1493
896#endif 1494#endif
897 1495
898/*****************************************************************************/ 1496/*****************************************************************************/
899 1497
1498#if EV_USE_IOCP
1499# include "ev_iocp.c"
1500#endif
900#if EV_USE_PORT 1501#if EV_USE_PORT
901# include "ev_port.c" 1502# include "ev_port.c"
902#endif 1503#endif
903#if EV_USE_KQUEUE 1504#if EV_USE_KQUEUE
904# include "ev_kqueue.c" 1505# include "ev_kqueue.c"
… …
960 /* kqueue is borked on everything but netbsd apparently */ 1561 /* kqueue is borked on everything but netbsd apparently */
961 /* 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 */
962 flags &= ~EVBACKEND_KQUEUE; 1563 flags &= ~EVBACKEND_KQUEUE;
963#endif 1564#endif
964#ifdef __APPLE__ 1565#ifdef __APPLE__
965 // flags &= ~EVBACKEND_KQUEUE; for documentation 1566 /* only select works correctly on that "unix-certified" platform */
966 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) */
967#endif 1572#endif
968 1573
969 return flags; 1574 return flags;
970} 1575}
971 1576
972unsigned int 1577unsigned int
973ev_embeddable_backends (void) 1578ev_embeddable_backends (void)
974{ 1579{
1580 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1581
975 /* 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 */
976 return EVBACKEND_KQUEUE 1583 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
977 | EVBACKEND_PORT; 1584 flags &= ~EVBACKEND_EPOLL;
1585
1586 return flags;
978} 1587}
979 1588
980unsigned int 1589unsigned int
981ev_backend (EV_P) 1590ev_backend (EV_P)
982{ 1591{
983 return backend; 1592 return backend;
984} 1593}
985 1594
1595#if EV_FEATURE_API
986unsigned int 1596unsigned int
987ev_loop_count (EV_P) 1597ev_iteration (EV_P)
988{ 1598{
989 return loop_count; 1599 return loop_count;
990} 1600}
991 1601
1602unsigned int
1603ev_depth (EV_P)
1604{
1605 return loop_depth;
1606}
1607
992void 1608void
993ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 1609ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
994{ 1610{
995 io_blocktime = interval; 1611 io_blocktime = interval;
996} 1612}
… …
999ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1615ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1000{ 1616{
1001 timeout_blocktime = interval; 1617 timeout_blocktime = interval;
1002} 1618}
1003 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 */
1004static void noinline 1645static void noinline
1005loop_init (EV_P_ unsigned int flags) 1646loop_init (EV_P_ unsigned int flags)
1006{ 1647{
1007 if (!backend) 1648 if (!backend)
1008 { 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
1009#if EV_USE_MONOTONIC 1660#if EV_USE_MONOTONIC
1661 if (!have_monotonic)
1010 { 1662 {
1011 struct timespec ts; 1663 struct timespec ts;
1664
1012 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1665 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1013 have_monotonic = 1; 1666 have_monotonic = 1;
1014 } 1667 }
1015#endif 1668#endif
1016
1017 ev_rt_now = ev_time ();
1018 mn_now = get_clock ();
1019 now_floor = mn_now;
1020 rtmn_diff = ev_rt_now - mn_now;
1021
1022 io_blocktime = 0.;
1023 timeout_blocktime = 0.;
1024 1669
1025 /* pid check not overridable via env */ 1670 /* pid check not overridable via env */
1026#ifndef _WIN32 1671#ifndef _WIN32
1027 if (flags & EVFLAG_FORKCHECK) 1672 if (flags & EVFLAG_FORKCHECK)
1028 curpid = getpid (); 1673 curpid = getpid ();
… …
1031 if (!(flags & EVFLAG_NOENV) 1676 if (!(flags & EVFLAG_NOENV)
1032 && !enable_secure () 1677 && !enable_secure ()
1033 && getenv ("LIBEV_FLAGS")) 1678 && getenv ("LIBEV_FLAGS"))
1034 flags = atoi (getenv ("LIBEV_FLAGS")); 1679 flags = atoi (getenv ("LIBEV_FLAGS"));
1035 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
1036 if (!(flags & 0x0000ffffUL)) 1704 if (!(flags & 0x0000ffffU))
1037 flags |= ev_recommended_backends (); 1705 flags |= ev_recommended_backends ();
1038 1706
1039 backend = 0;
1040 backend_fd = -1;
1041#if EV_USE_INOTIFY 1707#if EV_USE_IOCP
1042 fs_fd = -2; 1708 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
1043#endif 1709#endif
1044
1045#if EV_USE_PORT 1710#if EV_USE_PORT
1046 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1711 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1047#endif 1712#endif
1048#if EV_USE_KQUEUE 1713#if EV_USE_KQUEUE
1049 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 1714 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1056#endif 1721#endif
1057#if EV_USE_SELECT 1722#if EV_USE_SELECT
1058 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1723 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1059#endif 1724#endif
1060 1725
1726 ev_prepare_init (&pending_w, pendingcb);
1727
1728#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1061 ev_init (&sigev, sigcb); 1729 ev_init (&pipe_w, pipecb);
1062 ev_set_priority (&sigev, EV_MAXPRI); 1730 ev_set_priority (&pipe_w, EV_MAXPRI);
1731#endif
1063 } 1732 }
1064} 1733}
1065 1734
1735/* free up a loop structure */
1066static void noinline 1736static void noinline
1067loop_destroy (EV_P) 1737loop_destroy (EV_P)
1068{ 1738{
1069 int i; 1739 int i;
1740
1741 if (ev_is_active (&pipe_w))
1742 {
1743 /*ev_ref (EV_A);*/
1744 /*ev_io_stop (EV_A_ &pipe_w);*/
1745
1746#if EV_USE_EVENTFD
1747 if (evfd >= 0)
1748 close (evfd);
1749#endif
1750
1751 if (evpipe [0] >= 0)
1752 {
1753 EV_WIN32_CLOSE_FD (evpipe [0]);
1754 EV_WIN32_CLOSE_FD (evpipe [1]);
1755 }
1756 }
1757
1758#if EV_USE_SIGNALFD
1759 if (ev_is_active (&sigfd_w))
1760 close (sigfd);
1761#endif
1070 1762
1071#if EV_USE_INOTIFY 1763#if EV_USE_INOTIFY
1072 if (fs_fd >= 0) 1764 if (fs_fd >= 0)
1073 close (fs_fd); 1765 close (fs_fd);
1074#endif 1766#endif
1075 1767
1076 if (backend_fd >= 0) 1768 if (backend_fd >= 0)
1077 close (backend_fd); 1769 close (backend_fd);
1078 1770
1771#if EV_USE_IOCP
1772 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
1773#endif
1079#if EV_USE_PORT 1774#if EV_USE_PORT
1080 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 1775 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1081#endif 1776#endif
1082#if EV_USE_KQUEUE 1777#if EV_USE_KQUEUE
1083 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 1778 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1098#if EV_IDLE_ENABLE 1793#if EV_IDLE_ENABLE
1099 array_free (idle, [i]); 1794 array_free (idle, [i]);
1100#endif 1795#endif
1101 } 1796 }
1102 1797
1103 ev_free (anfds); anfdmax = 0; 1798 ev_free (anfds); anfds = 0; anfdmax = 0;
1104 1799
1105 /* have to use the microsoft-never-gets-it-right macro */ 1800 /* have to use the microsoft-never-gets-it-right macro */
1801 array_free (rfeed, EMPTY);
1106 array_free (fdchange, EMPTY); 1802 array_free (fdchange, EMPTY);
1107 array_free (timer, EMPTY); 1803 array_free (timer, EMPTY);
1108#if EV_PERIODIC_ENABLE 1804#if EV_PERIODIC_ENABLE
1109 array_free (periodic, EMPTY); 1805 array_free (periodic, EMPTY);
1110#endif 1806#endif
1111#if EV_FORK_ENABLE 1807#if EV_FORK_ENABLE
1112 array_free (fork, EMPTY); 1808 array_free (fork, EMPTY);
1113#endif 1809#endif
1114 array_free (prepare, EMPTY); 1810 array_free (prepare, EMPTY);
1115 array_free (check, EMPTY); 1811 array_free (check, EMPTY);
1812#if EV_ASYNC_ENABLE
1813 array_free (async, EMPTY);
1814#endif
1116 1815
1117 backend = 0; 1816 backend = 0;
1118} 1817}
1119 1818
1819#if EV_USE_INOTIFY
1120void inline_size infy_fork (EV_P); 1820inline_size void infy_fork (EV_P);
1821#endif
1121 1822
1122void inline_size 1823inline_size void
1123loop_fork (EV_P) 1824loop_fork (EV_P)
1124{ 1825{
1125#if EV_USE_PORT 1826#if EV_USE_PORT
1126 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1827 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1127#endif 1828#endif
… …
1133#endif 1834#endif
1134#if EV_USE_INOTIFY 1835#if EV_USE_INOTIFY
1135 infy_fork (EV_A); 1836 infy_fork (EV_A);
1136#endif 1837#endif
1137 1838
1138 if (ev_is_active (&sigev)) 1839 if (ev_is_active (&pipe_w))
1139 { 1840 {
1140 /* default loop */ 1841 /* this "locks" the handlers against writing to the pipe */
1842 /* while we modify the fd vars */
1843 sig_pending = 1;
1844#if EV_ASYNC_ENABLE
1845 async_pending = 1;
1846#endif
1141 1847
1142 ev_ref (EV_A); 1848 ev_ref (EV_A);
1143 ev_io_stop (EV_A_ &sigev); 1849 ev_io_stop (EV_A_ &pipe_w);
1144 close (sigpipe [0]);
1145 close (sigpipe [1]);
1146 1850
1147 while (pipe (sigpipe)) 1851#if EV_USE_EVENTFD
1148 syserr ("(libev) error creating pipe"); 1852 if (evfd >= 0)
1853 close (evfd);
1854#endif
1149 1855
1856 if (evpipe [0] >= 0)
1857 {
1858 EV_WIN32_CLOSE_FD (evpipe [0]);
1859 EV_WIN32_CLOSE_FD (evpipe [1]);
1860 }
1861
1862#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1150 siginit (EV_A); 1863 evpipe_init (EV_A);
1864 /* now iterate over everything, in case we missed something */
1865 pipecb (EV_A_ &pipe_w, EV_READ);
1866#endif
1151 } 1867 }
1152 1868
1153 postfork = 0; 1869 postfork = 0;
1154} 1870}
1155 1871
1156#if EV_MULTIPLICITY 1872#if EV_MULTIPLICITY
1873
1157struct ev_loop * 1874struct ev_loop *
1158ev_loop_new (unsigned int flags) 1875ev_loop_new (unsigned int flags)
1159{ 1876{
1160 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1877 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1161 1878
1162 memset (loop, 0, sizeof (struct ev_loop)); 1879 memset (EV_A, 0, sizeof (struct ev_loop));
1163
1164 loop_init (EV_A_ flags); 1880 loop_init (EV_A_ flags);
1165 1881
1166 if (ev_backend (EV_A)) 1882 if (ev_backend (EV_A))
1167 return loop; 1883 return EV_A;
1168 1884
1169 return 0; 1885 return 0;
1170} 1886}
1171 1887
1172void 1888void
… …
1177} 1893}
1178 1894
1179void 1895void
1180ev_loop_fork (EV_P) 1896ev_loop_fork (EV_P)
1181{ 1897{
1182 postfork = 1; 1898 postfork = 1; /* must be in line with ev_default_fork */
1183} 1899}
1900#endif /* multiplicity */
1184 1901
1902#if EV_VERIFY
1903static void noinline
1904verify_watcher (EV_P_ W w)
1905{
1906 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1907
1908 if (w->pending)
1909 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1910}
1911
1912static void noinline
1913verify_heap (EV_P_ ANHE *heap, int N)
1914{
1915 int i;
1916
1917 for (i = HEAP0; i < N + HEAP0; ++i)
1918 {
1919 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1920 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1921 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1922
1923 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1924 }
1925}
1926
1927static void noinline
1928array_verify (EV_P_ W *ws, int cnt)
1929{
1930 while (cnt--)
1931 {
1932 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1933 verify_watcher (EV_A_ ws [cnt]);
1934 }
1935}
1936#endif
1937
1938#if EV_FEATURE_API
1939void
1940ev_verify (EV_P)
1941{
1942#if EV_VERIFY
1943 int i;
1944 WL w;
1945
1946 assert (activecnt >= -1);
1947
1948 assert (fdchangemax >= fdchangecnt);
1949 for (i = 0; i < fdchangecnt; ++i)
1950 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1951
1952 assert (anfdmax >= 0);
1953 for (i = 0; i < anfdmax; ++i)
1954 for (w = anfds [i].head; w; w = w->next)
1955 {
1956 verify_watcher (EV_A_ (W)w);
1957 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1958 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1959 }
1960
1961 assert (timermax >= timercnt);
1962 verify_heap (EV_A_ timers, timercnt);
1963
1964#if EV_PERIODIC_ENABLE
1965 assert (periodicmax >= periodiccnt);
1966 verify_heap (EV_A_ periodics, periodiccnt);
1967#endif
1968
1969 for (i = NUMPRI; i--; )
1970 {
1971 assert (pendingmax [i] >= pendingcnt [i]);
1972#if EV_IDLE_ENABLE
1973 assert (idleall >= 0);
1974 assert (idlemax [i] >= idlecnt [i]);
1975 array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
1976#endif
1977 }
1978
1979#if EV_FORK_ENABLE
1980 assert (forkmax >= forkcnt);
1981 array_verify (EV_A_ (W *)forks, forkcnt);
1982#endif
1983
1984#if EV_ASYNC_ENABLE
1985 assert (asyncmax >= asynccnt);
1986 array_verify (EV_A_ (W *)asyncs, asynccnt);
1987#endif
1988
1989#if EV_PREPARE_ENABLE
1990 assert (preparemax >= preparecnt);
1991 array_verify (EV_A_ (W *)prepares, preparecnt);
1992#endif
1993
1994#if EV_CHECK_ENABLE
1995 assert (checkmax >= checkcnt);
1996 array_verify (EV_A_ (W *)checks, checkcnt);
1997#endif
1998
1999# if 0
2000#if EV_CHILD_ENABLE
2001 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
2002 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2003#endif
2004# endif
2005#endif
2006}
1185#endif 2007#endif
1186 2008
1187#if EV_MULTIPLICITY 2009#if EV_MULTIPLICITY
1188struct ev_loop * 2010struct ev_loop *
1189ev_default_loop_init (unsigned int flags) 2011ev_default_loop_init (unsigned int flags)
1190#else 2012#else
1191int 2013int
1192ev_default_loop (unsigned int flags) 2014ev_default_loop (unsigned int flags)
1193#endif 2015#endif
1194{ 2016{
1195 if (sigpipe [0] == sigpipe [1])
1196 if (pipe (sigpipe))
1197 return 0;
1198
1199 if (!ev_default_loop_ptr) 2017 if (!ev_default_loop_ptr)
1200 { 2018 {
1201#if EV_MULTIPLICITY 2019#if EV_MULTIPLICITY
1202 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2020 EV_P = ev_default_loop_ptr = &default_loop_struct;
1203#else 2021#else
1204 ev_default_loop_ptr = 1; 2022 ev_default_loop_ptr = 1;
1205#endif 2023#endif
1206 2024
1207 loop_init (EV_A_ flags); 2025 loop_init (EV_A_ flags);
1208 2026
1209 if (ev_backend (EV_A)) 2027 if (ev_backend (EV_A))
1210 { 2028 {
1211 siginit (EV_A); 2029#if EV_CHILD_ENABLE
1212
1213#ifndef _WIN32
1214 ev_signal_init (&childev, childcb, SIGCHLD); 2030 ev_signal_init (&childev, childcb, SIGCHLD);
1215 ev_set_priority (&childev, EV_MAXPRI); 2031 ev_set_priority (&childev, EV_MAXPRI);
1216 ev_signal_start (EV_A_ &childev); 2032 ev_signal_start (EV_A_ &childev);
1217 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2033 ev_unref (EV_A); /* child watcher should not keep loop alive */
1218#endif 2034#endif
… …
1226 2042
1227void 2043void
1228ev_default_destroy (void) 2044ev_default_destroy (void)
1229{ 2045{
1230#if EV_MULTIPLICITY 2046#if EV_MULTIPLICITY
1231 struct ev_loop *loop = ev_default_loop_ptr; 2047 EV_P = ev_default_loop_ptr;
1232#endif 2048#endif
1233 2049
1234#ifndef _WIN32 2050 ev_default_loop_ptr = 0;
2051
2052#if EV_CHILD_ENABLE
1235 ev_ref (EV_A); /* child watcher */ 2053 ev_ref (EV_A); /* child watcher */
1236 ev_signal_stop (EV_A_ &childev); 2054 ev_signal_stop (EV_A_ &childev);
1237#endif 2055#endif
1238 2056
1239 ev_ref (EV_A); /* signal watcher */
1240 ev_io_stop (EV_A_ &sigev);
1241
1242 close (sigpipe [0]); sigpipe [0] = 0;
1243 close (sigpipe [1]); sigpipe [1] = 0;
1244
1245 loop_destroy (EV_A); 2057 loop_destroy (EV_A);
1246} 2058}
1247 2059
1248void 2060void
1249ev_default_fork (void) 2061ev_default_fork (void)
1250{ 2062{
1251#if EV_MULTIPLICITY 2063#if EV_MULTIPLICITY
1252 struct ev_loop *loop = ev_default_loop_ptr; 2064 EV_P = ev_default_loop_ptr;
1253#endif 2065#endif
1254 2066
1255 if (backend) 2067 postfork = 1; /* must be in line with ev_loop_fork */
1256 postfork = 1;
1257} 2068}
1258 2069
1259/*****************************************************************************/ 2070/*****************************************************************************/
1260 2071
1261void 2072void
1262ev_invoke (EV_P_ void *w, int revents) 2073ev_invoke (EV_P_ void *w, int revents)
1263{ 2074{
1264 EV_CB_INVOKE ((W)w, revents); 2075 EV_CB_INVOKE ((W)w, revents);
1265} 2076}
1266 2077
1267void inline_speed 2078unsigned int
1268call_pending (EV_P) 2079ev_pending_count (EV_P)
2080{
2081 int pri;
2082 unsigned int count = 0;
2083
2084 for (pri = NUMPRI; pri--; )
2085 count += pendingcnt [pri];
2086
2087 return count;
2088}
2089
2090void noinline
2091ev_invoke_pending (EV_P)
1269{ 2092{
1270 int pri; 2093 int pri;
1271 2094
1272 for (pri = NUMPRI; pri--; ) 2095 for (pri = NUMPRI; pri--; )
1273 while (pendingcnt [pri]) 2096 while (pendingcnt [pri])
1274 { 2097 {
1275 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2098 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1276 2099
1277 if (expect_true (p->w))
1278 {
1279 /*assert (("non-pending watcher on pending list", p->w->pending));*/ 2100 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2101 /* ^ this is no longer true, as pending_w could be here */
1280 2102
1281 p->w->pending = 0; 2103 p->w->pending = 0;
1282 EV_CB_INVOKE (p->w, p->events); 2104 EV_CB_INVOKE (p->w, p->events);
1283 } 2105 EV_FREQUENT_CHECK;
1284 } 2106 }
1285} 2107}
1286 2108
1287void inline_size
1288timers_reify (EV_P)
1289{
1290 while (timercnt && ((WT)timers [0])->at <= mn_now)
1291 {
1292 ev_timer *w = (ev_timer *)timers [0];
1293
1294 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1295
1296 /* first reschedule or stop timer */
1297 if (w->repeat)
1298 {
1299 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1300
1301 ((WT)w)->at += w->repeat;
1302 if (((WT)w)->at < mn_now)
1303 ((WT)w)->at = mn_now;
1304
1305 downheap (timers, timercnt, 0);
1306 }
1307 else
1308 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1309
1310 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1311 }
1312}
1313
1314#if EV_PERIODIC_ENABLE
1315void inline_size
1316periodics_reify (EV_P)
1317{
1318 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1319 {
1320 ev_periodic *w = (ev_periodic *)periodics [0];
1321
1322 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1323
1324 /* first reschedule or stop timer */
1325 if (w->reschedule_cb)
1326 {
1327 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1328 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1329 downheap (periodics, periodiccnt, 0);
1330 }
1331 else if (w->interval)
1332 {
1333 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1334 if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1335 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1336 downheap (periodics, periodiccnt, 0);
1337 }
1338 else
1339 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1340
1341 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1342 }
1343}
1344
1345static void noinline
1346periodics_reschedule (EV_P)
1347{
1348 int i;
1349
1350 /* adjust periodics after time jump */
1351 for (i = 0; i < periodiccnt; ++i)
1352 {
1353 ev_periodic *w = (ev_periodic *)periodics [i];
1354
1355 if (w->reschedule_cb)
1356 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1357 else if (w->interval)
1358 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1359 }
1360
1361 /* now rebuild the heap */
1362 for (i = periodiccnt >> 1; i--; )
1363 downheap (periodics, periodiccnt, i);
1364}
1365#endif
1366
1367#if EV_IDLE_ENABLE 2109#if EV_IDLE_ENABLE
1368void inline_size 2110/* make idle watchers pending. this handles the "call-idle */
2111/* only when higher priorities are idle" logic */
2112inline_size void
1369idle_reify (EV_P) 2113idle_reify (EV_P)
1370{ 2114{
1371 if (expect_false (idleall)) 2115 if (expect_false (idleall))
1372 { 2116 {
1373 int pri; 2117 int pri;
… …
1385 } 2129 }
1386 } 2130 }
1387} 2131}
1388#endif 2132#endif
1389 2133
1390void inline_speed 2134/* make timers pending */
2135inline_size void
2136timers_reify (EV_P)
2137{
2138 EV_FREQUENT_CHECK;
2139
2140 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
2141 {
2142 do
2143 {
2144 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
2145
2146 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
2147
2148 /* first reschedule or stop timer */
2149 if (w->repeat)
2150 {
2151 ev_at (w) += w->repeat;
2152 if (ev_at (w) < mn_now)
2153 ev_at (w) = mn_now;
2154
2155 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
2156
2157 ANHE_at_cache (timers [HEAP0]);
2158 downheap (timers, timercnt, HEAP0);
2159 }
2160 else
2161 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
2162
2163 EV_FREQUENT_CHECK;
2164 feed_reverse (EV_A_ (W)w);
2165 }
2166 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
2167
2168 feed_reverse_done (EV_A_ EV_TIMER);
2169 }
2170}
2171
2172#if EV_PERIODIC_ENABLE
2173/* make periodics pending */
2174inline_size void
2175periodics_reify (EV_P)
2176{
2177 EV_FREQUENT_CHECK;
2178
2179 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2180 {
2181 int feed_count = 0;
2182
2183 do
2184 {
2185 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2186
2187 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
2188
2189 /* first reschedule or stop timer */
2190 if (w->reschedule_cb)
2191 {
2192 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2193
2194 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
2195
2196 ANHE_at_cache (periodics [HEAP0]);
2197 downheap (periodics, periodiccnt, HEAP0);
2198 }
2199 else if (w->interval)
2200 {
2201 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2202 /* if next trigger time is not sufficiently in the future, put it there */
2203 /* this might happen because of floating point inexactness */
2204 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2205 {
2206 ev_at (w) += w->interval;
2207
2208 /* if interval is unreasonably low we might still have a time in the past */
2209 /* so correct this. this will make the periodic very inexact, but the user */
2210 /* has effectively asked to get triggered more often than possible */
2211 if (ev_at (w) < ev_rt_now)
2212 ev_at (w) = ev_rt_now;
2213 }
2214
2215 ANHE_at_cache (periodics [HEAP0]);
2216 downheap (periodics, periodiccnt, HEAP0);
2217 }
2218 else
2219 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
2220
2221 EV_FREQUENT_CHECK;
2222 feed_reverse (EV_A_ (W)w);
2223 }
2224 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
2225
2226 feed_reverse_done (EV_A_ EV_PERIODIC);
2227 }
2228}
2229
2230/* simply recalculate all periodics */
2231/* TODO: maybe ensure that at least one event happens when jumping forward? */
2232static void noinline
2233periodics_reschedule (EV_P)
2234{
2235 int i;
2236
2237 /* adjust periodics after time jump */
2238 for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
2239 {
2240 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2241
2242 if (w->reschedule_cb)
2243 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2244 else if (w->interval)
2245 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2246
2247 ANHE_at_cache (periodics [i]);
2248 }
2249
2250 reheap (periodics, periodiccnt);
2251}
2252#endif
2253
2254/* adjust all timers by a given offset */
2255static void noinline
2256timers_reschedule (EV_P_ ev_tstamp adjust)
2257{
2258 int i;
2259
2260 for (i = 0; i < timercnt; ++i)
2261 {
2262 ANHE *he = timers + i + HEAP0;
2263 ANHE_w (*he)->at += adjust;
2264 ANHE_at_cache (*he);
2265 }
2266}
2267
2268/* fetch new monotonic and realtime times from the kernel */
2269/* also detect if there was a timejump, and act accordingly */
2270inline_speed void
1391time_update (EV_P_ ev_tstamp max_block) 2271time_update (EV_P_ ev_tstamp max_block)
1392{ 2272{
1393 int i;
1394
1395#if EV_USE_MONOTONIC 2273#if EV_USE_MONOTONIC
1396 if (expect_true (have_monotonic)) 2274 if (expect_true (have_monotonic))
1397 { 2275 {
2276 int i;
1398 ev_tstamp odiff = rtmn_diff; 2277 ev_tstamp odiff = rtmn_diff;
1399 2278
1400 mn_now = get_clock (); 2279 mn_now = get_clock ();
1401 2280
1402 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2281 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1420 */ 2299 */
1421 for (i = 4; --i; ) 2300 for (i = 4; --i; )
1422 { 2301 {
1423 rtmn_diff = ev_rt_now - mn_now; 2302 rtmn_diff = ev_rt_now - mn_now;
1424 2303
1425 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 2304 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP))
1426 return; /* all is well */ 2305 return; /* all is well */
1427 2306
1428 ev_rt_now = ev_time (); 2307 ev_rt_now = ev_time ();
1429 mn_now = get_clock (); 2308 mn_now = get_clock ();
1430 now_floor = mn_now; 2309 now_floor = mn_now;
1431 } 2310 }
1432 2311
2312 /* no timer adjustment, as the monotonic clock doesn't jump */
2313 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1433# if EV_PERIODIC_ENABLE 2314# if EV_PERIODIC_ENABLE
1434 periodics_reschedule (EV_A); 2315 periodics_reschedule (EV_A);
1435# endif 2316# endif
1436 /* no timer adjustment, as the monotonic clock doesn't jump */
1437 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1438 } 2317 }
1439 else 2318 else
1440#endif 2319#endif
1441 { 2320 {
1442 ev_rt_now = ev_time (); 2321 ev_rt_now = ev_time ();
1443 2322
1444 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 2323 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1445 { 2324 {
2325 /* adjust timers. this is easy, as the offset is the same for all of them */
2326 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1446#if EV_PERIODIC_ENABLE 2327#if EV_PERIODIC_ENABLE
1447 periodics_reschedule (EV_A); 2328 periodics_reschedule (EV_A);
1448#endif 2329#endif
1449 /* adjust timers. this is easy, as the offset is the same for all of them */
1450 for (i = 0; i < timercnt; ++i)
1451 ((WT)timers [i])->at += ev_rt_now - mn_now;
1452 } 2330 }
1453 2331
1454 mn_now = ev_rt_now; 2332 mn_now = ev_rt_now;
1455 } 2333 }
1456} 2334}
1457 2335
1458void 2336void
1459ev_ref (EV_P)
1460{
1461 ++activecnt;
1462}
1463
1464void
1465ev_unref (EV_P)
1466{
1467 --activecnt;
1468}
1469
1470static int loop_done;
1471
1472void
1473ev_loop (EV_P_ int flags) 2337ev_run (EV_P_ int flags)
1474{ 2338{
1475 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) 2339#if EV_FEATURE_API
1476 ? EVUNLOOP_ONE 2340 ++loop_depth;
1477 : EVUNLOOP_CANCEL; 2341#endif
1478 2342
2343 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2344
2345 loop_done = EVBREAK_CANCEL;
2346
1479 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2347 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1480 2348
1481 do 2349 do
1482 { 2350 {
2351#if EV_VERIFY >= 2
2352 ev_verify (EV_A);
2353#endif
2354
1483#ifndef _WIN32 2355#ifndef _WIN32
1484 if (expect_false (curpid)) /* penalise the forking check even more */ 2356 if (expect_false (curpid)) /* penalise the forking check even more */
1485 if (expect_false (getpid () != curpid)) 2357 if (expect_false (getpid () != curpid))
1486 { 2358 {
1487 curpid = getpid (); 2359 curpid = getpid ();
… …
1493 /* we might have forked, so queue fork handlers */ 2365 /* we might have forked, so queue fork handlers */
1494 if (expect_false (postfork)) 2366 if (expect_false (postfork))
1495 if (forkcnt) 2367 if (forkcnt)
1496 { 2368 {
1497 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2369 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1498 call_pending (EV_A); 2370 EV_INVOKE_PENDING;
1499 } 2371 }
1500#endif 2372#endif
1501 2373
2374#if EV_PREPARE_ENABLE
1502 /* queue prepare watchers (and execute them) */ 2375 /* queue prepare watchers (and execute them) */
1503 if (expect_false (preparecnt)) 2376 if (expect_false (preparecnt))
1504 { 2377 {
1505 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2378 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1506 call_pending (EV_A); 2379 EV_INVOKE_PENDING;
1507 } 2380 }
2381#endif
1508 2382
1509 if (expect_false (!activecnt)) 2383 if (expect_false (loop_done))
1510 break; 2384 break;
1511 2385
1512 /* we might have forked, so reify kernel state if necessary */ 2386 /* we might have forked, so reify kernel state if necessary */
1513 if (expect_false (postfork)) 2387 if (expect_false (postfork))
1514 loop_fork (EV_A); 2388 loop_fork (EV_A);
… …
1519 /* calculate blocking time */ 2393 /* calculate blocking time */
1520 { 2394 {
1521 ev_tstamp waittime = 0.; 2395 ev_tstamp waittime = 0.;
1522 ev_tstamp sleeptime = 0.; 2396 ev_tstamp sleeptime = 0.;
1523 2397
2398 /* remember old timestamp for io_blocktime calculation */
2399 ev_tstamp prev_mn_now = mn_now;
2400
2401 /* update time to cancel out callback processing overhead */
2402 time_update (EV_A_ 1e100);
2403
1524 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2404 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt)))
1525 { 2405 {
1526 /* update time to cancel out callback processing overhead */
1527 time_update (EV_A_ 1e100);
1528
1529 waittime = MAX_BLOCKTIME; 2406 waittime = MAX_BLOCKTIME;
1530 2407
1531 if (timercnt) 2408 if (timercnt)
1532 { 2409 {
1533 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge; 2410 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
1534 if (waittime > to) waittime = to; 2411 if (waittime > to) waittime = to;
1535 } 2412 }
1536 2413
1537#if EV_PERIODIC_ENABLE 2414#if EV_PERIODIC_ENABLE
1538 if (periodiccnt) 2415 if (periodiccnt)
1539 { 2416 {
1540 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge; 2417 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1541 if (waittime > to) waittime = to; 2418 if (waittime > to) waittime = to;
1542 } 2419 }
1543#endif 2420#endif
1544 2421
2422 /* don't let timeouts decrease the waittime below timeout_blocktime */
1545 if (expect_false (waittime < timeout_blocktime)) 2423 if (expect_false (waittime < timeout_blocktime))
1546 waittime = timeout_blocktime; 2424 waittime = timeout_blocktime;
1547 2425
1548 sleeptime = waittime - backend_fudge; 2426 /* extra check because io_blocktime is commonly 0 */
1549
1550 if (expect_true (sleeptime > io_blocktime)) 2427 if (expect_false (io_blocktime))
1551 sleeptime = io_blocktime;
1552
1553 if (sleeptime)
1554 { 2428 {
2429 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2430
2431 if (sleeptime > waittime - backend_fudge)
2432 sleeptime = waittime - backend_fudge;
2433
2434 if (expect_true (sleeptime > 0.))
2435 {
1555 ev_sleep (sleeptime); 2436 ev_sleep (sleeptime);
1556 waittime -= sleeptime; 2437 waittime -= sleeptime;
2438 }
1557 } 2439 }
1558 } 2440 }
1559 2441
2442#if EV_FEATURE_API
1560 ++loop_count; 2443 ++loop_count;
2444#endif
2445 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
1561 backend_poll (EV_A_ waittime); 2446 backend_poll (EV_A_ waittime);
2447 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
1562 2448
1563 /* update ev_rt_now, do magic */ 2449 /* update ev_rt_now, do magic */
1564 time_update (EV_A_ waittime + sleeptime); 2450 time_update (EV_A_ waittime + sleeptime);
1565 } 2451 }
1566 2452
… …
1573#if EV_IDLE_ENABLE 2459#if EV_IDLE_ENABLE
1574 /* queue idle watchers unless other events are pending */ 2460 /* queue idle watchers unless other events are pending */
1575 idle_reify (EV_A); 2461 idle_reify (EV_A);
1576#endif 2462#endif
1577 2463
2464#if EV_CHECK_ENABLE
1578 /* queue check watchers, to be executed first */ 2465 /* queue check watchers, to be executed first */
1579 if (expect_false (checkcnt)) 2466 if (expect_false (checkcnt))
1580 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2467 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2468#endif
1581 2469
1582 call_pending (EV_A); 2470 EV_INVOKE_PENDING;
1583
1584 } 2471 }
1585 while (expect_true (activecnt && !loop_done)); 2472 while (expect_true (
2473 activecnt
2474 && !loop_done
2475 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2476 ));
1586 2477
1587 if (loop_done == EVUNLOOP_ONE) 2478 if (loop_done == EVBREAK_ONE)
1588 loop_done = EVUNLOOP_CANCEL; 2479 loop_done = EVBREAK_CANCEL;
1589}
1590 2480
2481#if EV_FEATURE_API
2482 --loop_depth;
2483#endif
2484}
2485
1591void 2486void
1592ev_unloop (EV_P_ int how) 2487ev_break (EV_P_ int how)
1593{ 2488{
1594 loop_done = how; 2489 loop_done = how;
1595} 2490}
1596 2491
2492void
2493ev_ref (EV_P)
2494{
2495 ++activecnt;
2496}
2497
2498void
2499ev_unref (EV_P)
2500{
2501 --activecnt;
2502}
2503
2504void
2505ev_now_update (EV_P)
2506{
2507 time_update (EV_A_ 1e100);
2508}
2509
2510void
2511ev_suspend (EV_P)
2512{
2513 ev_now_update (EV_A);
2514}
2515
2516void
2517ev_resume (EV_P)
2518{
2519 ev_tstamp mn_prev = mn_now;
2520
2521 ev_now_update (EV_A);
2522 timers_reschedule (EV_A_ mn_now - mn_prev);
2523#if EV_PERIODIC_ENABLE
2524 /* TODO: really do this? */
2525 periodics_reschedule (EV_A);
2526#endif
2527}
2528
1597/*****************************************************************************/ 2529/*****************************************************************************/
2530/* singly-linked list management, used when the expected list length is short */
1598 2531
1599void inline_size 2532inline_size void
1600wlist_add (WL *head, WL elem) 2533wlist_add (WL *head, WL elem)
1601{ 2534{
1602 elem->next = *head; 2535 elem->next = *head;
1603 *head = elem; 2536 *head = elem;
1604} 2537}
1605 2538
1606void inline_size 2539inline_size void
1607wlist_del (WL *head, WL elem) 2540wlist_del (WL *head, WL elem)
1608{ 2541{
1609 while (*head) 2542 while (*head)
1610 { 2543 {
1611 if (*head == elem) 2544 if (expect_true (*head == elem))
1612 { 2545 {
1613 *head = elem->next; 2546 *head = elem->next;
1614 return; 2547 break;
1615 } 2548 }
1616 2549
1617 head = &(*head)->next; 2550 head = &(*head)->next;
1618 } 2551 }
1619} 2552}
1620 2553
1621void inline_speed 2554/* internal, faster, version of ev_clear_pending */
2555inline_speed void
1622clear_pending (EV_P_ W w) 2556clear_pending (EV_P_ W w)
1623{ 2557{
1624 if (w->pending) 2558 if (w->pending)
1625 { 2559 {
1626 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2560 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
1627 w->pending = 0; 2561 w->pending = 0;
1628 } 2562 }
1629} 2563}
1630 2564
1631int 2565int
… …
1635 int pending = w_->pending; 2569 int pending = w_->pending;
1636 2570
1637 if (expect_true (pending)) 2571 if (expect_true (pending))
1638 { 2572 {
1639 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2573 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2574 p->w = (W)&pending_w;
1640 w_->pending = 0; 2575 w_->pending = 0;
1641 p->w = 0;
1642 return p->events; 2576 return p->events;
1643 } 2577 }
1644 else 2578 else
1645 return 0; 2579 return 0;
1646} 2580}
1647 2581
1648void inline_size 2582inline_size void
1649pri_adjust (EV_P_ W w) 2583pri_adjust (EV_P_ W w)
1650{ 2584{
1651 int pri = w->priority; 2585 int pri = ev_priority (w);
1652 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2586 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1653 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2587 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1654 w->priority = pri; 2588 ev_set_priority (w, pri);
1655} 2589}
1656 2590
1657void inline_speed 2591inline_speed void
1658ev_start (EV_P_ W w, int active) 2592ev_start (EV_P_ W w, int active)
1659{ 2593{
1660 pri_adjust (EV_A_ w); 2594 pri_adjust (EV_A_ w);
1661 w->active = active; 2595 w->active = active;
1662 ev_ref (EV_A); 2596 ev_ref (EV_A);
1663} 2597}
1664 2598
1665void inline_size 2599inline_size void
1666ev_stop (EV_P_ W w) 2600ev_stop (EV_P_ W w)
1667{ 2601{
1668 ev_unref (EV_A); 2602 ev_unref (EV_A);
1669 w->active = 0; 2603 w->active = 0;
1670} 2604}
… …
1677 int fd = w->fd; 2611 int fd = w->fd;
1678 2612
1679 if (expect_false (ev_is_active (w))) 2613 if (expect_false (ev_is_active (w)))
1680 return; 2614 return;
1681 2615
1682 assert (("ev_io_start called with negative fd", fd >= 0)); 2616 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2617 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2618
2619 EV_FREQUENT_CHECK;
1683 2620
1684 ev_start (EV_A_ (W)w, 1); 2621 ev_start (EV_A_ (W)w, 1);
1685 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2622 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
1686 wlist_add (&anfds[fd].head, (WL)w); 2623 wlist_add (&anfds[fd].head, (WL)w);
1687 2624
1688 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 2625 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
1689 w->events &= ~EV_IOFDSET; 2626 w->events &= ~EV__IOFDSET;
2627
2628 EV_FREQUENT_CHECK;
1690} 2629}
1691 2630
1692void noinline 2631void noinline
1693ev_io_stop (EV_P_ ev_io *w) 2632ev_io_stop (EV_P_ ev_io *w)
1694{ 2633{
1695 clear_pending (EV_A_ (W)w); 2634 clear_pending (EV_A_ (W)w);
1696 if (expect_false (!ev_is_active (w))) 2635 if (expect_false (!ev_is_active (w)))
1697 return; 2636 return;
1698 2637
1699 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 2638 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2639
2640 EV_FREQUENT_CHECK;
1700 2641
1701 wlist_del (&anfds[w->fd].head, (WL)w); 2642 wlist_del (&anfds[w->fd].head, (WL)w);
1702 ev_stop (EV_A_ (W)w); 2643 ev_stop (EV_A_ (W)w);
1703 2644
1704 fd_change (EV_A_ w->fd, 1); 2645 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2646
2647 EV_FREQUENT_CHECK;
1705} 2648}
1706 2649
1707void noinline 2650void noinline
1708ev_timer_start (EV_P_ ev_timer *w) 2651ev_timer_start (EV_P_ ev_timer *w)
1709{ 2652{
1710 if (expect_false (ev_is_active (w))) 2653 if (expect_false (ev_is_active (w)))
1711 return; 2654 return;
1712 2655
1713 ((WT)w)->at += mn_now; 2656 ev_at (w) += mn_now;
1714 2657
1715 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2658 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1716 2659
2660 EV_FREQUENT_CHECK;
2661
2662 ++timercnt;
1717 ev_start (EV_A_ (W)w, ++timercnt); 2663 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
1718 array_needsize (WT, timers, timermax, timercnt, EMPTY2); 2664 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1719 timers [timercnt - 1] = (WT)w; 2665 ANHE_w (timers [ev_active (w)]) = (WT)w;
1720 upheap (timers, timercnt - 1); 2666 ANHE_at_cache (timers [ev_active (w)]);
2667 upheap (timers, ev_active (w));
1721 2668
2669 EV_FREQUENT_CHECK;
2670
1722 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/ 2671 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
1723} 2672}
1724 2673
1725void noinline 2674void noinline
1726ev_timer_stop (EV_P_ ev_timer *w) 2675ev_timer_stop (EV_P_ ev_timer *w)
1727{ 2676{
1728 clear_pending (EV_A_ (W)w); 2677 clear_pending (EV_A_ (W)w);
1729 if (expect_false (!ev_is_active (w))) 2678 if (expect_false (!ev_is_active (w)))
1730 return; 2679 return;
1731 2680
1732 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w)); 2681 EV_FREQUENT_CHECK;
1733 2682
1734 { 2683 {
1735 int active = ((W)w)->active; 2684 int active = ev_active (w);
1736 2685
2686 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2687
2688 --timercnt;
2689
1737 if (expect_true (--active < --timercnt)) 2690 if (expect_true (active < timercnt + HEAP0))
1738 { 2691 {
1739 timers [active] = timers [timercnt]; 2692 timers [active] = timers [timercnt + HEAP0];
1740 adjustheap (timers, timercnt, active); 2693 adjustheap (timers, timercnt, active);
1741 } 2694 }
1742 } 2695 }
1743 2696
1744 ((WT)w)->at -= mn_now; 2697 ev_at (w) -= mn_now;
1745 2698
1746 ev_stop (EV_A_ (W)w); 2699 ev_stop (EV_A_ (W)w);
2700
2701 EV_FREQUENT_CHECK;
1747} 2702}
1748 2703
1749void noinline 2704void noinline
1750ev_timer_again (EV_P_ ev_timer *w) 2705ev_timer_again (EV_P_ ev_timer *w)
1751{ 2706{
2707 EV_FREQUENT_CHECK;
2708
1752 if (ev_is_active (w)) 2709 if (ev_is_active (w))
1753 { 2710 {
1754 if (w->repeat) 2711 if (w->repeat)
1755 { 2712 {
1756 ((WT)w)->at = mn_now + w->repeat; 2713 ev_at (w) = mn_now + w->repeat;
2714 ANHE_at_cache (timers [ev_active (w)]);
1757 adjustheap (timers, timercnt, ((W)w)->active - 1); 2715 adjustheap (timers, timercnt, ev_active (w));
1758 } 2716 }
1759 else 2717 else
1760 ev_timer_stop (EV_A_ w); 2718 ev_timer_stop (EV_A_ w);
1761 } 2719 }
1762 else if (w->repeat) 2720 else if (w->repeat)
1763 { 2721 {
1764 w->at = w->repeat; 2722 ev_at (w) = w->repeat;
1765 ev_timer_start (EV_A_ w); 2723 ev_timer_start (EV_A_ w);
1766 } 2724 }
2725
2726 EV_FREQUENT_CHECK;
2727}
2728
2729ev_tstamp
2730ev_timer_remaining (EV_P_ ev_timer *w)
2731{
2732 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
1767} 2733}
1768 2734
1769#if EV_PERIODIC_ENABLE 2735#if EV_PERIODIC_ENABLE
1770void noinline 2736void noinline
1771ev_periodic_start (EV_P_ ev_periodic *w) 2737ev_periodic_start (EV_P_ ev_periodic *w)
1772{ 2738{
1773 if (expect_false (ev_is_active (w))) 2739 if (expect_false (ev_is_active (w)))
1774 return; 2740 return;
1775 2741
1776 if (w->reschedule_cb) 2742 if (w->reschedule_cb)
1777 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 2743 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1778 else if (w->interval) 2744 else if (w->interval)
1779 { 2745 {
1780 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2746 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
1781 /* this formula differs from the one in periodic_reify because we do not always round up */ 2747 /* this formula differs from the one in periodic_reify because we do not always round up */
1782 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2748 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1783 } 2749 }
1784 else 2750 else
1785 ((WT)w)->at = w->offset; 2751 ev_at (w) = w->offset;
1786 2752
2753 EV_FREQUENT_CHECK;
2754
2755 ++periodiccnt;
1787 ev_start (EV_A_ (W)w, ++periodiccnt); 2756 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
1788 array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2); 2757 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
1789 periodics [periodiccnt - 1] = (WT)w; 2758 ANHE_w (periodics [ev_active (w)]) = (WT)w;
1790 upheap (periodics, periodiccnt - 1); 2759 ANHE_at_cache (periodics [ev_active (w)]);
2760 upheap (periodics, ev_active (w));
1791 2761
2762 EV_FREQUENT_CHECK;
2763
1792 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/ 2764 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
1793} 2765}
1794 2766
1795void noinline 2767void noinline
1796ev_periodic_stop (EV_P_ ev_periodic *w) 2768ev_periodic_stop (EV_P_ ev_periodic *w)
1797{ 2769{
1798 clear_pending (EV_A_ (W)w); 2770 clear_pending (EV_A_ (W)w);
1799 if (expect_false (!ev_is_active (w))) 2771 if (expect_false (!ev_is_active (w)))
1800 return; 2772 return;
1801 2773
1802 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w)); 2774 EV_FREQUENT_CHECK;
1803 2775
1804 { 2776 {
1805 int active = ((W)w)->active; 2777 int active = ev_active (w);
1806 2778
2779 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2780
2781 --periodiccnt;
2782
1807 if (expect_true (--active < --periodiccnt)) 2783 if (expect_true (active < periodiccnt + HEAP0))
1808 { 2784 {
1809 periodics [active] = periodics [periodiccnt]; 2785 periodics [active] = periodics [periodiccnt + HEAP0];
1810 adjustheap (periodics, periodiccnt, active); 2786 adjustheap (periodics, periodiccnt, active);
1811 } 2787 }
1812 } 2788 }
1813 2789
1814 ev_stop (EV_A_ (W)w); 2790 ev_stop (EV_A_ (W)w);
2791
2792 EV_FREQUENT_CHECK;
1815} 2793}
1816 2794
1817void noinline 2795void noinline
1818ev_periodic_again (EV_P_ ev_periodic *w) 2796ev_periodic_again (EV_P_ ev_periodic *w)
1819{ 2797{
… …
1825 2803
1826#ifndef SA_RESTART 2804#ifndef SA_RESTART
1827# define SA_RESTART 0 2805# define SA_RESTART 0
1828#endif 2806#endif
1829 2807
2808#if EV_SIGNAL_ENABLE
2809
1830void noinline 2810void noinline
1831ev_signal_start (EV_P_ ev_signal *w) 2811ev_signal_start (EV_P_ ev_signal *w)
1832{ 2812{
1833#if EV_MULTIPLICITY
1834 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1835#endif
1836 if (expect_false (ev_is_active (w))) 2813 if (expect_false (ev_is_active (w)))
1837 return; 2814 return;
1838 2815
1839 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 2816 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
1840 2817
2818#if EV_MULTIPLICITY
2819 assert (("libev: a signal must not be attached to two different loops",
2820 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2821
2822 signals [w->signum - 1].loop = EV_A;
2823#endif
2824
2825 EV_FREQUENT_CHECK;
2826
2827#if EV_USE_SIGNALFD
2828 if (sigfd == -2)
1841 { 2829 {
1842#ifndef _WIN32 2830 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
1843 sigset_t full, prev; 2831 if (sigfd < 0 && errno == EINVAL)
1844 sigfillset (&full); 2832 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
1845 sigprocmask (SIG_SETMASK, &full, &prev);
1846#endif
1847 2833
1848 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 2834 if (sigfd >= 0)
2835 {
2836 fd_intern (sigfd); /* doing it twice will not hurt */
1849 2837
1850#ifndef _WIN32 2838 sigemptyset (&sigfd_set);
1851 sigprocmask (SIG_SETMASK, &prev, 0); 2839
1852#endif 2840 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
2841 ev_set_priority (&sigfd_w, EV_MAXPRI);
2842 ev_io_start (EV_A_ &sigfd_w);
2843 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
2844 }
1853 } 2845 }
2846
2847 if (sigfd >= 0)
2848 {
2849 /* TODO: check .head */
2850 sigaddset (&sigfd_set, w->signum);
2851 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
2852
2853 signalfd (sigfd, &sigfd_set, 0);
2854 }
2855#endif
1854 2856
1855 ev_start (EV_A_ (W)w, 1); 2857 ev_start (EV_A_ (W)w, 1);
1856 wlist_add (&signals [w->signum - 1].head, (WL)w); 2858 wlist_add (&signals [w->signum - 1].head, (WL)w);
1857 2859
1858 if (!((WL)w)->next) 2860 if (!((WL)w)->next)
2861# if EV_USE_SIGNALFD
2862 if (sigfd < 0) /*TODO*/
2863# endif
1859 { 2864 {
1860#if _WIN32 2865# ifdef _WIN32
2866 evpipe_init (EV_A);
2867
1861 signal (w->signum, sighandler); 2868 signal (w->signum, ev_sighandler);
1862#else 2869# else
1863 struct sigaction sa; 2870 struct sigaction sa;
2871
2872 evpipe_init (EV_A);
2873
1864 sa.sa_handler = sighandler; 2874 sa.sa_handler = ev_sighandler;
1865 sigfillset (&sa.sa_mask); 2875 sigfillset (&sa.sa_mask);
1866 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2876 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1867 sigaction (w->signum, &sa, 0); 2877 sigaction (w->signum, &sa, 0);
2878
2879 sigemptyset (&sa.sa_mask);
2880 sigaddset (&sa.sa_mask, w->signum);
2881 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
1868#endif 2882#endif
1869 } 2883 }
2884
2885 EV_FREQUENT_CHECK;
1870} 2886}
1871 2887
1872void noinline 2888void noinline
1873ev_signal_stop (EV_P_ ev_signal *w) 2889ev_signal_stop (EV_P_ ev_signal *w)
1874{ 2890{
1875 clear_pending (EV_A_ (W)w); 2891 clear_pending (EV_A_ (W)w);
1876 if (expect_false (!ev_is_active (w))) 2892 if (expect_false (!ev_is_active (w)))
1877 return; 2893 return;
1878 2894
2895 EV_FREQUENT_CHECK;
2896
1879 wlist_del (&signals [w->signum - 1].head, (WL)w); 2897 wlist_del (&signals [w->signum - 1].head, (WL)w);
1880 ev_stop (EV_A_ (W)w); 2898 ev_stop (EV_A_ (W)w);
1881 2899
1882 if (!signals [w->signum - 1].head) 2900 if (!signals [w->signum - 1].head)
2901 {
2902#if EV_MULTIPLICITY
2903 signals [w->signum - 1].loop = 0; /* unattach from signal */
2904#endif
2905#if EV_USE_SIGNALFD
2906 if (sigfd >= 0)
2907 {
2908 sigset_t ss;
2909
2910 sigemptyset (&ss);
2911 sigaddset (&ss, w->signum);
2912 sigdelset (&sigfd_set, w->signum);
2913
2914 signalfd (sigfd, &sigfd_set, 0);
2915 sigprocmask (SIG_UNBLOCK, &ss, 0);
2916 }
2917 else
2918#endif
1883 signal (w->signum, SIG_DFL); 2919 signal (w->signum, SIG_DFL);
2920 }
2921
2922 EV_FREQUENT_CHECK;
1884} 2923}
2924
2925#endif
2926
2927#if EV_CHILD_ENABLE
1885 2928
1886void 2929void
1887ev_child_start (EV_P_ ev_child *w) 2930ev_child_start (EV_P_ ev_child *w)
1888{ 2931{
1889#if EV_MULTIPLICITY 2932#if EV_MULTIPLICITY
1890 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2933 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1891#endif 2934#endif
1892 if (expect_false (ev_is_active (w))) 2935 if (expect_false (ev_is_active (w)))
1893 return; 2936 return;
1894 2937
2938 EV_FREQUENT_CHECK;
2939
1895 ev_start (EV_A_ (W)w, 1); 2940 ev_start (EV_A_ (W)w, 1);
1896 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2941 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2942
2943 EV_FREQUENT_CHECK;
1897} 2944}
1898 2945
1899void 2946void
1900ev_child_stop (EV_P_ ev_child *w) 2947ev_child_stop (EV_P_ ev_child *w)
1901{ 2948{
1902 clear_pending (EV_A_ (W)w); 2949 clear_pending (EV_A_ (W)w);
1903 if (expect_false (!ev_is_active (w))) 2950 if (expect_false (!ev_is_active (w)))
1904 return; 2951 return;
1905 2952
2953 EV_FREQUENT_CHECK;
2954
1906 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2955 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
1907 ev_stop (EV_A_ (W)w); 2956 ev_stop (EV_A_ (W)w);
2957
2958 EV_FREQUENT_CHECK;
1908} 2959}
2960
2961#endif
1909 2962
1910#if EV_STAT_ENABLE 2963#if EV_STAT_ENABLE
1911 2964
1912# ifdef _WIN32 2965# ifdef _WIN32
1913# undef lstat 2966# undef lstat
1914# define lstat(a,b) _stati64 (a,b) 2967# define lstat(a,b) _stati64 (a,b)
1915# endif 2968# endif
1916 2969
1917#define DEF_STAT_INTERVAL 5.0074891 2970#define DEF_STAT_INTERVAL 5.0074891
2971#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
1918#define MIN_STAT_INTERVAL 0.1074891 2972#define MIN_STAT_INTERVAL 0.1074891
1919 2973
1920static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 2974static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1921 2975
1922#if EV_USE_INOTIFY 2976#if EV_USE_INOTIFY
1923# define EV_INOTIFY_BUFSIZE 8192 2977
2978/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
2979# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
1924 2980
1925static void noinline 2981static void noinline
1926infy_add (EV_P_ ev_stat *w) 2982infy_add (EV_P_ ev_stat *w)
1927{ 2983{
1928 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); 2984 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);
1929 2985
1930 if (w->wd < 0) 2986 if (w->wd >= 0)
2987 {
2988 struct statfs sfs;
2989
2990 /* now local changes will be tracked by inotify, but remote changes won't */
2991 /* unless the filesystem is known to be local, we therefore still poll */
2992 /* also do poll on <2.6.25, but with normal frequency */
2993
2994 if (!fs_2625)
2995 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2996 else if (!statfs (w->path, &sfs)
2997 && (sfs.f_type == 0x1373 /* devfs */
2998 || sfs.f_type == 0xEF53 /* ext2/3 */
2999 || sfs.f_type == 0x3153464a /* jfs */
3000 || sfs.f_type == 0x52654973 /* reiser3 */
3001 || sfs.f_type == 0x01021994 /* tempfs */
3002 || sfs.f_type == 0x58465342 /* xfs */))
3003 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3004 else
3005 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
1931 { 3006 }
1932 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 3007 else
3008 {
3009 /* can't use inotify, continue to stat */
3010 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
1933 3011
1934 /* monitor some parent directory for speedup hints */ 3012 /* if path is not there, monitor some parent directory for speedup hints */
3013 /* note that exceeding the hardcoded path limit is not a correctness issue, */
3014 /* but an efficiency issue only */
1935 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3015 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
1936 { 3016 {
1937 char path [4096]; 3017 char path [4096];
1938 strcpy (path, w->path); 3018 strcpy (path, w->path);
1939 3019
… …
1942 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 3022 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
1943 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 3023 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
1944 3024
1945 char *pend = strrchr (path, '/'); 3025 char *pend = strrchr (path, '/');
1946 3026
1947 if (!pend) 3027 if (!pend || pend == path)
1948 break; /* whoops, no '/', complain to your admin */ 3028 break;
1949 3029
1950 *pend = 0; 3030 *pend = 0;
1951 w->wd = inotify_add_watch (fs_fd, path, mask); 3031 w->wd = inotify_add_watch (fs_fd, path, mask);
1952 } 3032 }
1953 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3033 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
1954 } 3034 }
1955 } 3035 }
1956 else
1957 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
1958 3036
1959 if (w->wd >= 0) 3037 if (w->wd >= 0)
1960 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3038 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
3039
3040 /* now re-arm timer, if required */
3041 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3042 ev_timer_again (EV_A_ &w->timer);
3043 if (ev_is_active (&w->timer)) ev_unref (EV_A);
1961} 3044}
1962 3045
1963static void noinline 3046static void noinline
1964infy_del (EV_P_ ev_stat *w) 3047infy_del (EV_P_ ev_stat *w)
1965{ 3048{
… …
1968 3051
1969 if (wd < 0) 3052 if (wd < 0)
1970 return; 3053 return;
1971 3054
1972 w->wd = -2; 3055 w->wd = -2;
1973 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3056 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
1974 wlist_del (&fs_hash [slot].head, (WL)w); 3057 wlist_del (&fs_hash [slot].head, (WL)w);
1975 3058
1976 /* remove this watcher, if others are watching it, they will rearm */ 3059 /* remove this watcher, if others are watching it, they will rearm */
1977 inotify_rm_watch (fs_fd, wd); 3060 inotify_rm_watch (fs_fd, wd);
1978} 3061}
1979 3062
1980static void noinline 3063static void noinline
1981infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3064infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
1982{ 3065{
1983 if (slot < 0) 3066 if (slot < 0)
1984 /* overflow, need to check for all hahs slots */ 3067 /* overflow, need to check for all hash slots */
1985 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3068 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
1986 infy_wd (EV_A_ slot, wd, ev); 3069 infy_wd (EV_A_ slot, wd, ev);
1987 else 3070 else
1988 { 3071 {
1989 WL w_; 3072 WL w_;
1990 3073
1991 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3074 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
1992 { 3075 {
1993 ev_stat *w = (ev_stat *)w_; 3076 ev_stat *w = (ev_stat *)w_;
1994 w_ = w_->next; /* lets us remove this watcher and all before it */ 3077 w_ = w_->next; /* lets us remove this watcher and all before it */
1995 3078
1996 if (w->wd == wd || wd == -1) 3079 if (w->wd == wd || wd == -1)
1997 { 3080 {
1998 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3081 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
1999 { 3082 {
3083 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2000 w->wd = -1; 3084 w->wd = -1;
2001 infy_add (EV_A_ w); /* re-add, no matter what */ 3085 infy_add (EV_A_ w); /* re-add, no matter what */
2002 } 3086 }
2003 3087
2004 stat_timer_cb (EV_A_ &w->timer, 0); 3088 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2009 3093
2010static void 3094static void
2011infy_cb (EV_P_ ev_io *w, int revents) 3095infy_cb (EV_P_ ev_io *w, int revents)
2012{ 3096{
2013 char buf [EV_INOTIFY_BUFSIZE]; 3097 char buf [EV_INOTIFY_BUFSIZE];
2014 struct inotify_event *ev = (struct inotify_event *)buf;
2015 int ofs; 3098 int ofs;
2016 int len = read (fs_fd, buf, sizeof (buf)); 3099 int len = read (fs_fd, buf, sizeof (buf));
2017 3100
2018 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3101 for (ofs = 0; ofs < len; )
3102 {
3103 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2019 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3104 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3105 ofs += sizeof (struct inotify_event) + ev->len;
3106 }
2020} 3107}
2021 3108
2022void inline_size 3109inline_size void
3110ev_check_2625 (EV_P)
3111{
3112 /* kernels < 2.6.25 are borked
3113 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3114 */
3115 if (ev_linux_version () < 0x020619)
3116 return;
3117
3118 fs_2625 = 1;
3119}
3120
3121inline_size int
3122infy_newfd (void)
3123{
3124#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3125 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3126 if (fd >= 0)
3127 return fd;
3128#endif
3129 return inotify_init ();
3130}
3131
3132inline_size void
2023infy_init (EV_P) 3133infy_init (EV_P)
2024{ 3134{
2025 if (fs_fd != -2) 3135 if (fs_fd != -2)
2026 return; 3136 return;
2027 3137
3138 fs_fd = -1;
3139
3140 ev_check_2625 (EV_A);
3141
2028 fs_fd = inotify_init (); 3142 fs_fd = infy_newfd ();
2029 3143
2030 if (fs_fd >= 0) 3144 if (fs_fd >= 0)
2031 { 3145 {
3146 fd_intern (fs_fd);
2032 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3147 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2033 ev_set_priority (&fs_w, EV_MAXPRI); 3148 ev_set_priority (&fs_w, EV_MAXPRI);
2034 ev_io_start (EV_A_ &fs_w); 3149 ev_io_start (EV_A_ &fs_w);
3150 ev_unref (EV_A);
2035 } 3151 }
2036} 3152}
2037 3153
2038void inline_size 3154inline_size void
2039infy_fork (EV_P) 3155infy_fork (EV_P)
2040{ 3156{
2041 int slot; 3157 int slot;
2042 3158
2043 if (fs_fd < 0) 3159 if (fs_fd < 0)
2044 return; 3160 return;
2045 3161
3162 ev_ref (EV_A);
3163 ev_io_stop (EV_A_ &fs_w);
2046 close (fs_fd); 3164 close (fs_fd);
2047 fs_fd = inotify_init (); 3165 fs_fd = infy_newfd ();
2048 3166
3167 if (fs_fd >= 0)
3168 {
3169 fd_intern (fs_fd);
3170 ev_io_set (&fs_w, fs_fd, EV_READ);
3171 ev_io_start (EV_A_ &fs_w);
3172 ev_unref (EV_A);
3173 }
3174
2049 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3175 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2050 { 3176 {
2051 WL w_ = fs_hash [slot].head; 3177 WL w_ = fs_hash [slot].head;
2052 fs_hash [slot].head = 0; 3178 fs_hash [slot].head = 0;
2053 3179
2054 while (w_) 3180 while (w_)
… …
2059 w->wd = -1; 3185 w->wd = -1;
2060 3186
2061 if (fs_fd >= 0) 3187 if (fs_fd >= 0)
2062 infy_add (EV_A_ w); /* re-add, no matter what */ 3188 infy_add (EV_A_ w); /* re-add, no matter what */
2063 else 3189 else
3190 {
3191 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3192 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2064 ev_timer_start (EV_A_ &w->timer); 3193 ev_timer_again (EV_A_ &w->timer);
3194 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3195 }
2065 } 3196 }
2066
2067 } 3197 }
2068} 3198}
2069 3199
3200#endif
3201
3202#ifdef _WIN32
3203# define EV_LSTAT(p,b) _stati64 (p, b)
3204#else
3205# define EV_LSTAT(p,b) lstat (p, b)
2070#endif 3206#endif
2071 3207
2072void 3208void
2073ev_stat_stat (EV_P_ ev_stat *w) 3209ev_stat_stat (EV_P_ ev_stat *w)
2074{ 3210{
… …
2081static void noinline 3217static void noinline
2082stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3218stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2083{ 3219{
2084 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3220 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2085 3221
2086 /* we copy this here each the time so that */ 3222 ev_statdata prev = w->attr;
2087 /* prev has the old value when the callback gets invoked */
2088 w->prev = w->attr;
2089 ev_stat_stat (EV_A_ w); 3223 ev_stat_stat (EV_A_ w);
2090 3224
2091 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3225 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2092 if ( 3226 if (
2093 w->prev.st_dev != w->attr.st_dev 3227 prev.st_dev != w->attr.st_dev
2094 || w->prev.st_ino != w->attr.st_ino 3228 || prev.st_ino != w->attr.st_ino
2095 || w->prev.st_mode != w->attr.st_mode 3229 || prev.st_mode != w->attr.st_mode
2096 || w->prev.st_nlink != w->attr.st_nlink 3230 || prev.st_nlink != w->attr.st_nlink
2097 || w->prev.st_uid != w->attr.st_uid 3231 || prev.st_uid != w->attr.st_uid
2098 || w->prev.st_gid != w->attr.st_gid 3232 || prev.st_gid != w->attr.st_gid
2099 || w->prev.st_rdev != w->attr.st_rdev 3233 || prev.st_rdev != w->attr.st_rdev
2100 || w->prev.st_size != w->attr.st_size 3234 || prev.st_size != w->attr.st_size
2101 || w->prev.st_atime != w->attr.st_atime 3235 || prev.st_atime != w->attr.st_atime
2102 || w->prev.st_mtime != w->attr.st_mtime 3236 || prev.st_mtime != w->attr.st_mtime
2103 || w->prev.st_ctime != w->attr.st_ctime 3237 || prev.st_ctime != w->attr.st_ctime
2104 ) { 3238 ) {
3239 /* we only update w->prev on actual differences */
3240 /* in case we test more often than invoke the callback, */
3241 /* to ensure that prev is always different to attr */
3242 w->prev = prev;
3243
2105 #if EV_USE_INOTIFY 3244 #if EV_USE_INOTIFY
3245 if (fs_fd >= 0)
3246 {
2106 infy_del (EV_A_ w); 3247 infy_del (EV_A_ w);
2107 infy_add (EV_A_ w); 3248 infy_add (EV_A_ w);
2108 ev_stat_stat (EV_A_ w); /* avoid race... */ 3249 ev_stat_stat (EV_A_ w); /* avoid race... */
3250 }
2109 #endif 3251 #endif
2110 3252
2111 ev_feed_event (EV_A_ w, EV_STAT); 3253 ev_feed_event (EV_A_ w, EV_STAT);
2112 } 3254 }
2113} 3255}
… …
2116ev_stat_start (EV_P_ ev_stat *w) 3258ev_stat_start (EV_P_ ev_stat *w)
2117{ 3259{
2118 if (expect_false (ev_is_active (w))) 3260 if (expect_false (ev_is_active (w)))
2119 return; 3261 return;
2120 3262
2121 /* since we use memcmp, we need to clear any padding data etc. */
2122 memset (&w->prev, 0, sizeof (ev_statdata));
2123 memset (&w->attr, 0, sizeof (ev_statdata));
2124
2125 ev_stat_stat (EV_A_ w); 3263 ev_stat_stat (EV_A_ w);
2126 3264
3265 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2127 if (w->interval < MIN_STAT_INTERVAL) 3266 w->interval = MIN_STAT_INTERVAL;
2128 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2129 3267
2130 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 3268 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2131 ev_set_priority (&w->timer, ev_priority (w)); 3269 ev_set_priority (&w->timer, ev_priority (w));
2132 3270
2133#if EV_USE_INOTIFY 3271#if EV_USE_INOTIFY
2134 infy_init (EV_A); 3272 infy_init (EV_A);
2135 3273
2136 if (fs_fd >= 0) 3274 if (fs_fd >= 0)
2137 infy_add (EV_A_ w); 3275 infy_add (EV_A_ w);
2138 else 3276 else
2139#endif 3277#endif
3278 {
2140 ev_timer_start (EV_A_ &w->timer); 3279 ev_timer_again (EV_A_ &w->timer);
3280 ev_unref (EV_A);
3281 }
2141 3282
2142 ev_start (EV_A_ (W)w, 1); 3283 ev_start (EV_A_ (W)w, 1);
3284
3285 EV_FREQUENT_CHECK;
2143} 3286}
2144 3287
2145void 3288void
2146ev_stat_stop (EV_P_ ev_stat *w) 3289ev_stat_stop (EV_P_ ev_stat *w)
2147{ 3290{
2148 clear_pending (EV_A_ (W)w); 3291 clear_pending (EV_A_ (W)w);
2149 if (expect_false (!ev_is_active (w))) 3292 if (expect_false (!ev_is_active (w)))
2150 return; 3293 return;
2151 3294
3295 EV_FREQUENT_CHECK;
3296
2152#if EV_USE_INOTIFY 3297#if EV_USE_INOTIFY
2153 infy_del (EV_A_ w); 3298 infy_del (EV_A_ w);
2154#endif 3299#endif
3300
3301 if (ev_is_active (&w->timer))
3302 {
3303 ev_ref (EV_A);
2155 ev_timer_stop (EV_A_ &w->timer); 3304 ev_timer_stop (EV_A_ &w->timer);
3305 }
2156 3306
2157 ev_stop (EV_A_ (W)w); 3307 ev_stop (EV_A_ (W)w);
3308
3309 EV_FREQUENT_CHECK;
2158} 3310}
2159#endif 3311#endif
2160 3312
2161#if EV_IDLE_ENABLE 3313#if EV_IDLE_ENABLE
2162void 3314void
… …
2164{ 3316{
2165 if (expect_false (ev_is_active (w))) 3317 if (expect_false (ev_is_active (w)))
2166 return; 3318 return;
2167 3319
2168 pri_adjust (EV_A_ (W)w); 3320 pri_adjust (EV_A_ (W)w);
3321
3322 EV_FREQUENT_CHECK;
2169 3323
2170 { 3324 {
2171 int active = ++idlecnt [ABSPRI (w)]; 3325 int active = ++idlecnt [ABSPRI (w)];
2172 3326
2173 ++idleall; 3327 ++idleall;
2174 ev_start (EV_A_ (W)w, active); 3328 ev_start (EV_A_ (W)w, active);
2175 3329
2176 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 3330 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2177 idles [ABSPRI (w)][active - 1] = w; 3331 idles [ABSPRI (w)][active - 1] = w;
2178 } 3332 }
3333
3334 EV_FREQUENT_CHECK;
2179} 3335}
2180 3336
2181void 3337void
2182ev_idle_stop (EV_P_ ev_idle *w) 3338ev_idle_stop (EV_P_ ev_idle *w)
2183{ 3339{
2184 clear_pending (EV_A_ (W)w); 3340 clear_pending (EV_A_ (W)w);
2185 if (expect_false (!ev_is_active (w))) 3341 if (expect_false (!ev_is_active (w)))
2186 return; 3342 return;
2187 3343
3344 EV_FREQUENT_CHECK;
3345
2188 { 3346 {
2189 int active = ((W)w)->active; 3347 int active = ev_active (w);
2190 3348
2191 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]]; 3349 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2192 ((W)idles [ABSPRI (w)][active - 1])->active = active; 3350 ev_active (idles [ABSPRI (w)][active - 1]) = active;
2193 3351
2194 ev_stop (EV_A_ (W)w); 3352 ev_stop (EV_A_ (W)w);
2195 --idleall; 3353 --idleall;
2196 } 3354 }
2197}
2198#endif
2199 3355
3356 EV_FREQUENT_CHECK;
3357}
3358#endif
3359
3360#if EV_PREPARE_ENABLE
2200void 3361void
2201ev_prepare_start (EV_P_ ev_prepare *w) 3362ev_prepare_start (EV_P_ ev_prepare *w)
2202{ 3363{
2203 if (expect_false (ev_is_active (w))) 3364 if (expect_false (ev_is_active (w)))
2204 return; 3365 return;
3366
3367 EV_FREQUENT_CHECK;
2205 3368
2206 ev_start (EV_A_ (W)w, ++preparecnt); 3369 ev_start (EV_A_ (W)w, ++preparecnt);
2207 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 3370 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2208 prepares [preparecnt - 1] = w; 3371 prepares [preparecnt - 1] = w;
3372
3373 EV_FREQUENT_CHECK;
2209} 3374}
2210 3375
2211void 3376void
2212ev_prepare_stop (EV_P_ ev_prepare *w) 3377ev_prepare_stop (EV_P_ ev_prepare *w)
2213{ 3378{
2214 clear_pending (EV_A_ (W)w); 3379 clear_pending (EV_A_ (W)w);
2215 if (expect_false (!ev_is_active (w))) 3380 if (expect_false (!ev_is_active (w)))
2216 return; 3381 return;
2217 3382
3383 EV_FREQUENT_CHECK;
3384
2218 { 3385 {
2219 int active = ((W)w)->active; 3386 int active = ev_active (w);
3387
2220 prepares [active - 1] = prepares [--preparecnt]; 3388 prepares [active - 1] = prepares [--preparecnt];
2221 ((W)prepares [active - 1])->active = active; 3389 ev_active (prepares [active - 1]) = active;
2222 } 3390 }
2223 3391
2224 ev_stop (EV_A_ (W)w); 3392 ev_stop (EV_A_ (W)w);
2225}
2226 3393
3394 EV_FREQUENT_CHECK;
3395}
3396#endif
3397
3398#if EV_CHECK_ENABLE
2227void 3399void
2228ev_check_start (EV_P_ ev_check *w) 3400ev_check_start (EV_P_ ev_check *w)
2229{ 3401{
2230 if (expect_false (ev_is_active (w))) 3402 if (expect_false (ev_is_active (w)))
2231 return; 3403 return;
3404
3405 EV_FREQUENT_CHECK;
2232 3406
2233 ev_start (EV_A_ (W)w, ++checkcnt); 3407 ev_start (EV_A_ (W)w, ++checkcnt);
2234 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 3408 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2235 checks [checkcnt - 1] = w; 3409 checks [checkcnt - 1] = w;
3410
3411 EV_FREQUENT_CHECK;
2236} 3412}
2237 3413
2238void 3414void
2239ev_check_stop (EV_P_ ev_check *w) 3415ev_check_stop (EV_P_ ev_check *w)
2240{ 3416{
2241 clear_pending (EV_A_ (W)w); 3417 clear_pending (EV_A_ (W)w);
2242 if (expect_false (!ev_is_active (w))) 3418 if (expect_false (!ev_is_active (w)))
2243 return; 3419 return;
2244 3420
3421 EV_FREQUENT_CHECK;
3422
2245 { 3423 {
2246 int active = ((W)w)->active; 3424 int active = ev_active (w);
3425
2247 checks [active - 1] = checks [--checkcnt]; 3426 checks [active - 1] = checks [--checkcnt];
2248 ((W)checks [active - 1])->active = active; 3427 ev_active (checks [active - 1]) = active;
2249 } 3428 }
2250 3429
2251 ev_stop (EV_A_ (W)w); 3430 ev_stop (EV_A_ (W)w);
3431
3432 EV_FREQUENT_CHECK;
2252} 3433}
3434#endif
2253 3435
2254#if EV_EMBED_ENABLE 3436#if EV_EMBED_ENABLE
2255void noinline 3437void noinline
2256ev_embed_sweep (EV_P_ ev_embed *w) 3438ev_embed_sweep (EV_P_ ev_embed *w)
2257{ 3439{
2258 ev_loop (w->other, EVLOOP_NONBLOCK); 3440 ev_run (w->other, EVRUN_NOWAIT);
2259} 3441}
2260 3442
2261static void 3443static void
2262embed_io_cb (EV_P_ ev_io *io, int revents) 3444embed_io_cb (EV_P_ ev_io *io, int revents)
2263{ 3445{
2264 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 3446 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2265 3447
2266 if (ev_cb (w)) 3448 if (ev_cb (w))
2267 ev_feed_event (EV_A_ (W)w, EV_EMBED); 3449 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2268 else 3450 else
2269 ev_embed_sweep (loop, w); 3451 ev_run (w->other, EVRUN_NOWAIT);
2270} 3452}
2271 3453
2272static void 3454static void
2273embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3455embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2274{ 3456{
2275 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3457 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2276 3458
2277 fd_reify (w->other); 3459 {
3460 EV_P = w->other;
3461
3462 while (fdchangecnt)
3463 {
3464 fd_reify (EV_A);
3465 ev_run (EV_A_ EVRUN_NOWAIT);
3466 }
3467 }
2278} 3468}
3469
3470static void
3471embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
3472{
3473 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3474
3475 ev_embed_stop (EV_A_ w);
3476
3477 {
3478 EV_P = w->other;
3479
3480 ev_loop_fork (EV_A);
3481 ev_run (EV_A_ EVRUN_NOWAIT);
3482 }
3483
3484 ev_embed_start (EV_A_ w);
3485}
3486
3487#if 0
3488static void
3489embed_idle_cb (EV_P_ ev_idle *idle, int revents)
3490{
3491 ev_idle_stop (EV_A_ idle);
3492}
3493#endif
2279 3494
2280void 3495void
2281ev_embed_start (EV_P_ ev_embed *w) 3496ev_embed_start (EV_P_ ev_embed *w)
2282{ 3497{
2283 if (expect_false (ev_is_active (w))) 3498 if (expect_false (ev_is_active (w)))
2284 return; 3499 return;
2285 3500
2286 { 3501 {
2287 struct ev_loop *loop = w->other; 3502 EV_P = w->other;
2288 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3503 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2289 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 3504 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2290 } 3505 }
3506
3507 EV_FREQUENT_CHECK;
2291 3508
2292 ev_set_priority (&w->io, ev_priority (w)); 3509 ev_set_priority (&w->io, ev_priority (w));
2293 ev_io_start (EV_A_ &w->io); 3510 ev_io_start (EV_A_ &w->io);
2294 3511
2295 ev_prepare_init (&w->prepare, embed_prepare_cb); 3512 ev_prepare_init (&w->prepare, embed_prepare_cb);
2296 ev_set_priority (&w->prepare, EV_MINPRI); 3513 ev_set_priority (&w->prepare, EV_MINPRI);
2297 ev_prepare_start (EV_A_ &w->prepare); 3514 ev_prepare_start (EV_A_ &w->prepare);
2298 3515
3516 ev_fork_init (&w->fork, embed_fork_cb);
3517 ev_fork_start (EV_A_ &w->fork);
3518
3519 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
3520
2299 ev_start (EV_A_ (W)w, 1); 3521 ev_start (EV_A_ (W)w, 1);
3522
3523 EV_FREQUENT_CHECK;
2300} 3524}
2301 3525
2302void 3526void
2303ev_embed_stop (EV_P_ ev_embed *w) 3527ev_embed_stop (EV_P_ ev_embed *w)
2304{ 3528{
2305 clear_pending (EV_A_ (W)w); 3529 clear_pending (EV_A_ (W)w);
2306 if (expect_false (!ev_is_active (w))) 3530 if (expect_false (!ev_is_active (w)))
2307 return; 3531 return;
2308 3532
3533 EV_FREQUENT_CHECK;
3534
2309 ev_io_stop (EV_A_ &w->io); 3535 ev_io_stop (EV_A_ &w->io);
2310 ev_prepare_stop (EV_A_ &w->prepare); 3536 ev_prepare_stop (EV_A_ &w->prepare);
3537 ev_fork_stop (EV_A_ &w->fork);
2311 3538
2312 ev_stop (EV_A_ (W)w); 3539 ev_stop (EV_A_ (W)w);
3540
3541 EV_FREQUENT_CHECK;
2313} 3542}
2314#endif 3543#endif
2315 3544
2316#if EV_FORK_ENABLE 3545#if EV_FORK_ENABLE
2317void 3546void
2318ev_fork_start (EV_P_ ev_fork *w) 3547ev_fork_start (EV_P_ ev_fork *w)
2319{ 3548{
2320 if (expect_false (ev_is_active (w))) 3549 if (expect_false (ev_is_active (w)))
2321 return; 3550 return;
3551
3552 EV_FREQUENT_CHECK;
2322 3553
2323 ev_start (EV_A_ (W)w, ++forkcnt); 3554 ev_start (EV_A_ (W)w, ++forkcnt);
2324 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 3555 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2325 forks [forkcnt - 1] = w; 3556 forks [forkcnt - 1] = w;
3557
3558 EV_FREQUENT_CHECK;
2326} 3559}
2327 3560
2328void 3561void
2329ev_fork_stop (EV_P_ ev_fork *w) 3562ev_fork_stop (EV_P_ ev_fork *w)
2330{ 3563{
2331 clear_pending (EV_A_ (W)w); 3564 clear_pending (EV_A_ (W)w);
2332 if (expect_false (!ev_is_active (w))) 3565 if (expect_false (!ev_is_active (w)))
2333 return; 3566 return;
2334 3567
3568 EV_FREQUENT_CHECK;
3569
2335 { 3570 {
2336 int active = ((W)w)->active; 3571 int active = ev_active (w);
3572
2337 forks [active - 1] = forks [--forkcnt]; 3573 forks [active - 1] = forks [--forkcnt];
2338 ((W)forks [active - 1])->active = active; 3574 ev_active (forks [active - 1]) = active;
2339 } 3575 }
2340 3576
2341 ev_stop (EV_A_ (W)w); 3577 ev_stop (EV_A_ (W)w);
3578
3579 EV_FREQUENT_CHECK;
3580}
3581#endif
3582
3583#if EV_ASYNC_ENABLE
3584void
3585ev_async_start (EV_P_ ev_async *w)
3586{
3587 if (expect_false (ev_is_active (w)))
3588 return;
3589
3590 w->sent = 0;
3591
3592 evpipe_init (EV_A);
3593
3594 EV_FREQUENT_CHECK;
3595
3596 ev_start (EV_A_ (W)w, ++asynccnt);
3597 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
3598 asyncs [asynccnt - 1] = w;
3599
3600 EV_FREQUENT_CHECK;
3601}
3602
3603void
3604ev_async_stop (EV_P_ ev_async *w)
3605{
3606 clear_pending (EV_A_ (W)w);
3607 if (expect_false (!ev_is_active (w)))
3608 return;
3609
3610 EV_FREQUENT_CHECK;
3611
3612 {
3613 int active = ev_active (w);
3614
3615 asyncs [active - 1] = asyncs [--asynccnt];
3616 ev_active (asyncs [active - 1]) = active;
3617 }
3618
3619 ev_stop (EV_A_ (W)w);
3620
3621 EV_FREQUENT_CHECK;
3622}
3623
3624void
3625ev_async_send (EV_P_ ev_async *w)
3626{
3627 w->sent = 1;
3628 evpipe_write (EV_A_ &async_pending);
2342} 3629}
2343#endif 3630#endif
2344 3631
2345/*****************************************************************************/ 3632/*****************************************************************************/
2346 3633
… …
2356once_cb (EV_P_ struct ev_once *once, int revents) 3643once_cb (EV_P_ struct ev_once *once, int revents)
2357{ 3644{
2358 void (*cb)(int revents, void *arg) = once->cb; 3645 void (*cb)(int revents, void *arg) = once->cb;
2359 void *arg = once->arg; 3646 void *arg = once->arg;
2360 3647
2361 ev_io_stop (EV_A_ &once->io); 3648 ev_io_stop (EV_A_ &once->io);
2362 ev_timer_stop (EV_A_ &once->to); 3649 ev_timer_stop (EV_A_ &once->to);
2363 ev_free (once); 3650 ev_free (once);
2364 3651
2365 cb (revents, arg); 3652 cb (revents, arg);
2366} 3653}
2367 3654
2368static void 3655static void
2369once_cb_io (EV_P_ ev_io *w, int revents) 3656once_cb_io (EV_P_ ev_io *w, int revents)
2370{ 3657{
2371 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 3658 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
3659
3660 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2372} 3661}
2373 3662
2374static void 3663static void
2375once_cb_to (EV_P_ ev_timer *w, int revents) 3664once_cb_to (EV_P_ ev_timer *w, int revents)
2376{ 3665{
2377 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 3666 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
3667
3668 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2378} 3669}
2379 3670
2380void 3671void
2381ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 3672ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2382{ 3673{
2383 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 3674 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
2384 3675
2385 if (expect_false (!once)) 3676 if (expect_false (!once))
2386 { 3677 {
2387 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 3678 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
2388 return; 3679 return;
2389 } 3680 }
2390 3681
2391 once->cb = cb; 3682 once->cb = cb;
2392 once->arg = arg; 3683 once->arg = arg;
… …
2404 ev_timer_set (&once->to, timeout, 0.); 3695 ev_timer_set (&once->to, timeout, 0.);
2405 ev_timer_start (EV_A_ &once->to); 3696 ev_timer_start (EV_A_ &once->to);
2406 } 3697 }
2407} 3698}
2408 3699
3700/*****************************************************************************/
3701
3702#if EV_WALK_ENABLE
3703void
3704ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3705{
3706 int i, j;
3707 ev_watcher_list *wl, *wn;
3708
3709 if (types & (EV_IO | EV_EMBED))
3710 for (i = 0; i < anfdmax; ++i)
3711 for (wl = anfds [i].head; wl; )
3712 {
3713 wn = wl->next;
3714
3715#if EV_EMBED_ENABLE
3716 if (ev_cb ((ev_io *)wl) == embed_io_cb)
3717 {
3718 if (types & EV_EMBED)
3719 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
3720 }
3721 else
3722#endif
3723#if EV_USE_INOTIFY
3724 if (ev_cb ((ev_io *)wl) == infy_cb)
3725 ;
3726 else
3727#endif
3728 if ((ev_io *)wl != &pipe_w)
3729 if (types & EV_IO)
3730 cb (EV_A_ EV_IO, wl);
3731
3732 wl = wn;
3733 }
3734
3735 if (types & (EV_TIMER | EV_STAT))
3736 for (i = timercnt + HEAP0; i-- > HEAP0; )
3737#if EV_STAT_ENABLE
3738 /*TODO: timer is not always active*/
3739 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
3740 {
3741 if (types & EV_STAT)
3742 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
3743 }
3744 else
3745#endif
3746 if (types & EV_TIMER)
3747 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
3748
3749#if EV_PERIODIC_ENABLE
3750 if (types & EV_PERIODIC)
3751 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
3752 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3753#endif
3754
3755#if EV_IDLE_ENABLE
3756 if (types & EV_IDLE)
3757 for (j = NUMPRI; i--; )
3758 for (i = idlecnt [j]; i--; )
3759 cb (EV_A_ EV_IDLE, idles [j][i]);
3760#endif
3761
3762#if EV_FORK_ENABLE
3763 if (types & EV_FORK)
3764 for (i = forkcnt; i--; )
3765 if (ev_cb (forks [i]) != embed_fork_cb)
3766 cb (EV_A_ EV_FORK, forks [i]);
3767#endif
3768
3769#if EV_ASYNC_ENABLE
3770 if (types & EV_ASYNC)
3771 for (i = asynccnt; i--; )
3772 cb (EV_A_ EV_ASYNC, asyncs [i]);
3773#endif
3774
3775#if EV_PREPARE_ENABLE
3776 if (types & EV_PREPARE)
3777 for (i = preparecnt; i--; )
3778# if EV_EMBED_ENABLE
3779 if (ev_cb (prepares [i]) != embed_prepare_cb)
3780# endif
3781 cb (EV_A_ EV_PREPARE, prepares [i]);
3782#endif
3783
3784#if EV_CHECK_ENABLE
3785 if (types & EV_CHECK)
3786 for (i = checkcnt; i--; )
3787 cb (EV_A_ EV_CHECK, checks [i]);
3788#endif
3789
3790#if EV_SIGNAL_ENABLE
3791 if (types & EV_SIGNAL)
3792 for (i = 0; i < EV_NSIG - 1; ++i)
3793 for (wl = signals [i].head; wl; )
3794 {
3795 wn = wl->next;
3796 cb (EV_A_ EV_SIGNAL, wl);
3797 wl = wn;
3798 }
3799#endif
3800
3801#if EV_CHILD_ENABLE
3802 if (types & EV_CHILD)
3803 for (i = (EV_PID_HASHSIZE); i--; )
3804 for (wl = childs [i]; wl; )
3805 {
3806 wn = wl->next;
3807 cb (EV_A_ EV_CHILD, wl);
3808 wl = wn;
3809 }
3810#endif
3811/* EV_STAT 0x00001000 /* stat data changed */
3812/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3813}
3814#endif
3815
2409#if EV_MULTIPLICITY 3816#if EV_MULTIPLICITY
2410 #include "ev_wrap.h" 3817 #include "ev_wrap.h"
2411#endif 3818#endif
2412 3819
2413#ifdef __cplusplus 3820EV_CPP(})
2414}
2415#endif
2416 3821

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