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Comparing libev/ev.c (file contents):
Revision 1.189 by root, Thu Dec 20 10:12:22 2007 UTC vs.
Revision 1.454 by root, Fri Mar 1 11:13:22 2013 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010,2011,2012 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:
10 * 9 *
11 * * Redistributions of source code must retain the above copyright 10 * 1. Redistributions of source code must retain the above copyright notice,
12 * notice, this list of conditions and the following disclaimer. 11 * this list of conditions and the following disclaimer.
13 * 12 *
14 * * Redistributions in binary form must reproduce the above 13 * 2. Redistributions in binary form must reproduce the above copyright
15 * copyright notice, this list of conditions and the following 14 * notice, this list of conditions and the following disclaimer in the
16 * disclaimer in the documentation and/or other materials provided 15 * documentation and/or other materials provided with the distribution.
17 * with the distribution.
18 * 16 *
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
21 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
22 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
23 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
24 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
25 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 25 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
29 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 * OF THE POSSIBILITY OF SUCH DAMAGE.
27 *
28 * Alternatively, the contents of this file may be used under the terms of
29 * the GNU General Public License ("GPL") version 2 or any later version,
30 * in which case the provisions of the GPL are applicable instead of
31 * the above. If you wish to allow the use of your version of this file
32 * only under the terms of the GPL and not to allow others to use your
33 * version of this file under the BSD license, indicate your decision
34 * by deleting the provisions above and replace them with the notice
35 * and other provisions required by the GPL. If you do not delete the
36 * provisions above, a recipient may use your version of this file under
37 * either the BSD or the GPL.
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_FLOOR
49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1
51# endif
52#endif
53
54# if HAVE_CLOCK_SYSCALL
55# ifndef EV_USE_CLOCK_SYSCALL
56# define EV_USE_CLOCK_SYSCALL 1
57# ifndef EV_USE_REALTIME
58# define EV_USE_REALTIME 0
59# endif
60# ifndef EV_USE_MONOTONIC
61# define EV_USE_MONOTONIC 1
62# endif
63# endif
64# elif !defined EV_USE_CLOCK_SYSCALL
65# define EV_USE_CLOCK_SYSCALL 0
66# endif
67
43# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
44# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
45# define EV_USE_MONOTONIC 1 70# define EV_USE_MONOTONIC 1
46# endif 71# endif
47# ifndef EV_USE_REALTIME 72# ifndef EV_USE_REALTIME
48# define EV_USE_REALTIME 1 73# define EV_USE_REALTIME 0
49# endif 74# endif
50# else 75# else
51# ifndef EV_USE_MONOTONIC 76# ifndef EV_USE_MONOTONIC
52# define EV_USE_MONOTONIC 0 77# define EV_USE_MONOTONIC 0
53# endif 78# endif
54# ifndef EV_USE_REALTIME 79# ifndef EV_USE_REALTIME
55# define EV_USE_REALTIME 0 80# define EV_USE_REALTIME 0
56# endif 81# endif
57# endif 82# endif
58 83
84# if HAVE_NANOSLEEP
59# ifndef EV_USE_SELECT 85# ifndef EV_USE_NANOSLEEP
60# if HAVE_SELECT && HAVE_SYS_SELECT_H 86# define EV_USE_NANOSLEEP EV_FEATURE_OS
61# define EV_USE_SELECT 1
62# else
63# define EV_USE_SELECT 0
64# endif 87# endif
88# else
89# undef EV_USE_NANOSLEEP
90# define EV_USE_NANOSLEEP 0
65# endif 91# endif
66 92
93# if HAVE_SELECT && HAVE_SYS_SELECT_H
67# ifndef EV_USE_POLL 94# ifndef EV_USE_SELECT
68# if HAVE_POLL && HAVE_POLL_H 95# define EV_USE_SELECT EV_FEATURE_BACKENDS
69# define EV_USE_POLL 1
70# else
71# define EV_USE_POLL 0
72# endif 96# endif
97# else
98# undef EV_USE_SELECT
99# define EV_USE_SELECT 0
100# endif
101
102# if HAVE_POLL && HAVE_POLL_H
103# ifndef EV_USE_POLL
104# define EV_USE_POLL EV_FEATURE_BACKENDS
105# endif
106# else
107# undef EV_USE_POLL
108# define EV_USE_POLL 0
73# endif 109# endif
74 110
75# ifndef EV_USE_EPOLL
76# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 111# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
77# define EV_USE_EPOLL 1 112# ifndef EV_USE_EPOLL
78# else 113# define EV_USE_EPOLL EV_FEATURE_BACKENDS
79# define EV_USE_EPOLL 0
80# endif 114# endif
115# else
116# undef EV_USE_EPOLL
117# define EV_USE_EPOLL 0
81# endif 118# endif
82 119
120# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
83# ifndef EV_USE_KQUEUE 121# ifndef EV_USE_KQUEUE
84# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 122# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
85# define EV_USE_KQUEUE 1
86# else
87# define EV_USE_KQUEUE 0
88# endif 123# endif
124# else
125# undef EV_USE_KQUEUE
126# define EV_USE_KQUEUE 0
89# endif 127# endif
90 128
91# ifndef EV_USE_PORT
92# if HAVE_PORT_H && HAVE_PORT_CREATE 129# if HAVE_PORT_H && HAVE_PORT_CREATE
93# define EV_USE_PORT 1 130# ifndef EV_USE_PORT
94# else 131# define EV_USE_PORT EV_FEATURE_BACKENDS
95# define EV_USE_PORT 0
96# endif 132# endif
133# else
134# undef EV_USE_PORT
135# define EV_USE_PORT 0
97# endif 136# endif
98 137
99# ifndef EV_USE_INOTIFY
100# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 138# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
101# define EV_USE_INOTIFY 1 139# ifndef EV_USE_INOTIFY
102# else
103# define EV_USE_INOTIFY 0 140# define EV_USE_INOTIFY EV_FEATURE_OS
104# endif 141# endif
142# else
143# undef EV_USE_INOTIFY
144# define EV_USE_INOTIFY 0
105# endif 145# endif
106 146
147# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
148# ifndef EV_USE_SIGNALFD
149# define EV_USE_SIGNALFD EV_FEATURE_OS
150# endif
151# else
152# undef EV_USE_SIGNALFD
153# define EV_USE_SIGNALFD 0
107#endif 154# endif
108 155
109#include <math.h> 156# if HAVE_EVENTFD
157# ifndef EV_USE_EVENTFD
158# define EV_USE_EVENTFD EV_FEATURE_OS
159# endif
160# else
161# undef EV_USE_EVENTFD
162# define EV_USE_EVENTFD 0
163# endif
164
165#endif
166
110#include <stdlib.h> 167#include <stdlib.h>
168#include <string.h>
111#include <fcntl.h> 169#include <fcntl.h>
112#include <stddef.h> 170#include <stddef.h>
113 171
114#include <stdio.h> 172#include <stdio.h>
115 173
116#include <assert.h> 174#include <assert.h>
117#include <errno.h> 175#include <errno.h>
118#include <sys/types.h> 176#include <sys/types.h>
119#include <time.h> 177#include <time.h>
178#include <limits.h>
120 179
121#include <signal.h> 180#include <signal.h>
122 181
123#ifdef EV_H 182#ifdef EV_H
124# include EV_H 183# include EV_H
125#else 184#else
126# include "ev.h" 185# include "ev.h"
186#endif
187
188#if EV_NO_THREADS
189# undef EV_NO_SMP
190# define EV_NO_SMP 1
191# undef ECB_NO_THREADS
192# define ECB_NO_THREADS 1
193#endif
194#if EV_NO_SMP
195# undef EV_NO_SMP
196# define ECB_NO_SMP 1
127#endif 197#endif
128 198
129#ifndef _WIN32 199#ifndef _WIN32
130# include <sys/time.h> 200# include <sys/time.h>
131# include <sys/wait.h> 201# include <sys/wait.h>
132# include <unistd.h> 202# include <unistd.h>
133#else 203#else
204# include <io.h>
134# define WIN32_LEAN_AND_MEAN 205# define WIN32_LEAN_AND_MEAN
206# include <winsock2.h>
135# include <windows.h> 207# include <windows.h>
136# ifndef EV_SELECT_IS_WINSOCKET 208# ifndef EV_SELECT_IS_WINSOCKET
137# define EV_SELECT_IS_WINSOCKET 1 209# define EV_SELECT_IS_WINSOCKET 1
138# endif 210# endif
211# undef EV_AVOID_STDIO
212#endif
213
214/* OS X, in its infinite idiocy, actually HARDCODES
215 * a limit of 1024 into their select. Where people have brains,
216 * OS X engineers apparently have a vacuum. Or maybe they were
217 * ordered to have a vacuum, or they do anything for money.
218 * This might help. Or not.
219 */
220#define _DARWIN_UNLIMITED_SELECT 1
221
222/* this block tries to deduce configuration from header-defined symbols and defaults */
223
224/* try to deduce the maximum number of signals on this platform */
225#if defined EV_NSIG
226/* use what's provided */
227#elif defined NSIG
228# define EV_NSIG (NSIG)
229#elif defined _NSIG
230# define EV_NSIG (_NSIG)
231#elif defined SIGMAX
232# define EV_NSIG (SIGMAX+1)
233#elif defined SIG_MAX
234# define EV_NSIG (SIG_MAX+1)
235#elif defined _SIG_MAX
236# define EV_NSIG (_SIG_MAX+1)
237#elif defined MAXSIG
238# define EV_NSIG (MAXSIG+1)
239#elif defined MAX_SIG
240# define EV_NSIG (MAX_SIG+1)
241#elif defined SIGARRAYSIZE
242# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
243#elif defined _sys_nsig
244# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
245#else
246# error "unable to find value for NSIG, please report"
247/* to make it compile regardless, just remove the above line, */
248/* but consider reporting it, too! :) */
249# define EV_NSIG 65
250#endif
251
252#ifndef EV_USE_FLOOR
253# define EV_USE_FLOOR 0
254#endif
255
256#ifndef EV_USE_CLOCK_SYSCALL
257# if __linux && __GLIBC__ >= 2
258# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
259# else
260# define EV_USE_CLOCK_SYSCALL 0
139#endif 261# endif
140 262#endif
141/**/
142 263
143#ifndef EV_USE_MONOTONIC 264#ifndef EV_USE_MONOTONIC
265# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
266# define EV_USE_MONOTONIC EV_FEATURE_OS
267# else
144# define EV_USE_MONOTONIC 0 268# define EV_USE_MONOTONIC 0
269# endif
145#endif 270#endif
146 271
147#ifndef EV_USE_REALTIME 272#ifndef EV_USE_REALTIME
148# define EV_USE_REALTIME 0 273# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
274#endif
275
276#ifndef EV_USE_NANOSLEEP
277# if _POSIX_C_SOURCE >= 199309L
278# define EV_USE_NANOSLEEP EV_FEATURE_OS
279# else
280# define EV_USE_NANOSLEEP 0
281# endif
149#endif 282#endif
150 283
151#ifndef EV_USE_SELECT 284#ifndef EV_USE_SELECT
152# define EV_USE_SELECT 1 285# define EV_USE_SELECT EV_FEATURE_BACKENDS
153#endif 286#endif
154 287
155#ifndef EV_USE_POLL 288#ifndef EV_USE_POLL
156# ifdef _WIN32 289# ifdef _WIN32
157# define EV_USE_POLL 0 290# define EV_USE_POLL 0
158# else 291# else
159# define EV_USE_POLL 1 292# define EV_USE_POLL EV_FEATURE_BACKENDS
160# endif 293# endif
161#endif 294#endif
162 295
163#ifndef EV_USE_EPOLL 296#ifndef EV_USE_EPOLL
297# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
298# define EV_USE_EPOLL EV_FEATURE_BACKENDS
299# else
164# define EV_USE_EPOLL 0 300# define EV_USE_EPOLL 0
301# endif
165#endif 302#endif
166 303
167#ifndef EV_USE_KQUEUE 304#ifndef EV_USE_KQUEUE
168# define EV_USE_KQUEUE 0 305# define EV_USE_KQUEUE 0
169#endif 306#endif
… …
171#ifndef EV_USE_PORT 308#ifndef EV_USE_PORT
172# define EV_USE_PORT 0 309# define EV_USE_PORT 0
173#endif 310#endif
174 311
175#ifndef EV_USE_INOTIFY 312#ifndef EV_USE_INOTIFY
313# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
314# define EV_USE_INOTIFY EV_FEATURE_OS
315# else
176# define EV_USE_INOTIFY 0 316# define EV_USE_INOTIFY 0
317# endif
177#endif 318#endif
178 319
179#ifndef EV_PID_HASHSIZE 320#ifndef EV_PID_HASHSIZE
180# if EV_MINIMAL 321# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
181# define EV_PID_HASHSIZE 1 322#endif
323
324#ifndef EV_INOTIFY_HASHSIZE
325# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
326#endif
327
328#ifndef EV_USE_EVENTFD
329# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
330# define EV_USE_EVENTFD EV_FEATURE_OS
182# else 331# else
183# define EV_PID_HASHSIZE 16 332# define EV_USE_EVENTFD 0
184# endif 333# endif
185#endif 334#endif
186 335
187#ifndef EV_INOTIFY_HASHSIZE 336#ifndef EV_USE_SIGNALFD
188# if EV_MINIMAL 337# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
189# define EV_INOTIFY_HASHSIZE 1 338# define EV_USE_SIGNALFD EV_FEATURE_OS
190# else 339# else
191# define EV_INOTIFY_HASHSIZE 16 340# define EV_USE_SIGNALFD 0
192# endif 341# endif
193#endif 342#endif
194 343
195/**/ 344#if 0 /* debugging */
345# define EV_VERIFY 3
346# define EV_USE_4HEAP 1
347# define EV_HEAP_CACHE_AT 1
348#endif
349
350#ifndef EV_VERIFY
351# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
352#endif
353
354#ifndef EV_USE_4HEAP
355# define EV_USE_4HEAP EV_FEATURE_DATA
356#endif
357
358#ifndef EV_HEAP_CACHE_AT
359# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
360#endif
361
362#ifdef ANDROID
363/* supposedly, android doesn't typedef fd_mask */
364# undef EV_USE_SELECT
365# define EV_USE_SELECT 0
366/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
367# undef EV_USE_CLOCK_SYSCALL
368# define EV_USE_CLOCK_SYSCALL 0
369#endif
370
371/* aix's poll.h seems to cause lots of trouble */
372#ifdef _AIX
373/* AIX has a completely broken poll.h header */
374# undef EV_USE_POLL
375# define EV_USE_POLL 0
376#endif
377
378/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
379/* which makes programs even slower. might work on other unices, too. */
380#if EV_USE_CLOCK_SYSCALL
381# include <sys/syscall.h>
382# ifdef SYS_clock_gettime
383# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
384# undef EV_USE_MONOTONIC
385# define EV_USE_MONOTONIC 1
386# else
387# undef EV_USE_CLOCK_SYSCALL
388# define EV_USE_CLOCK_SYSCALL 0
389# endif
390#endif
391
392/* this block fixes any misconfiguration where we know we run into trouble otherwise */
196 393
197#ifndef CLOCK_MONOTONIC 394#ifndef CLOCK_MONOTONIC
198# undef EV_USE_MONOTONIC 395# undef EV_USE_MONOTONIC
199# define EV_USE_MONOTONIC 0 396# define EV_USE_MONOTONIC 0
200#endif 397#endif
… …
207#if !EV_STAT_ENABLE 404#if !EV_STAT_ENABLE
208# undef EV_USE_INOTIFY 405# undef EV_USE_INOTIFY
209# define EV_USE_INOTIFY 0 406# define EV_USE_INOTIFY 0
210#endif 407#endif
211 408
409#if !EV_USE_NANOSLEEP
410/* hp-ux has it in sys/time.h, which we unconditionally include above */
411# if !defined _WIN32 && !defined __hpux
412# include <sys/select.h>
413# endif
414#endif
415
212#if EV_USE_INOTIFY 416#if EV_USE_INOTIFY
417# include <sys/statfs.h>
213# include <sys/inotify.h> 418# include <sys/inotify.h>
419/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
420# ifndef IN_DONT_FOLLOW
421# undef EV_USE_INOTIFY
422# define EV_USE_INOTIFY 0
214#endif 423# endif
424#endif
215 425
216#if EV_SELECT_IS_WINSOCKET 426#if EV_USE_EVENTFD
427/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
217# include <winsock.h> 428# include <stdint.h>
429# ifndef EFD_NONBLOCK
430# define EFD_NONBLOCK O_NONBLOCK
431# endif
432# ifndef EFD_CLOEXEC
433# ifdef O_CLOEXEC
434# define EFD_CLOEXEC O_CLOEXEC
435# else
436# define EFD_CLOEXEC 02000000
437# endif
438# endif
439EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
440#endif
441
442#if EV_USE_SIGNALFD
443/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
444# include <stdint.h>
445# ifndef SFD_NONBLOCK
446# define SFD_NONBLOCK O_NONBLOCK
447# endif
448# ifndef SFD_CLOEXEC
449# ifdef O_CLOEXEC
450# define SFD_CLOEXEC O_CLOEXEC
451# else
452# define SFD_CLOEXEC 02000000
453# endif
454# endif
455EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
456
457struct signalfd_siginfo
458{
459 uint32_t ssi_signo;
460 char pad[128 - sizeof (uint32_t)];
461};
218#endif 462#endif
219 463
220/**/ 464/**/
221 465
466#if EV_VERIFY >= 3
467# define EV_FREQUENT_CHECK ev_verify (EV_A)
468#else
469# define EV_FREQUENT_CHECK do { } while (0)
470#endif
471
222/* 472/*
223 * This is used to avoid floating point rounding problems. 473 * This is used to work around floating point rounding problems.
224 * It is added to ev_rt_now when scheduling periodics
225 * to ensure progress, time-wise, even when rounding
226 * errors are against us.
227 * This value is good at least till the year 4000. 474 * This value is good at least till the year 4000.
228 * Better solutions welcome.
229 */ 475 */
230#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 476#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
477/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
231 478
232#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 479#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
233#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 480#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
234/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
235 481
482#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
483#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
484
485/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
486/* ECB.H BEGIN */
487/*
488 * libecb - http://software.schmorp.de/pkg/libecb
489 *
490 * Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de>
491 * Copyright (©) 2011 Emanuele Giaquinta
492 * All rights reserved.
493 *
494 * Redistribution and use in source and binary forms, with or without modifica-
495 * tion, are permitted provided that the following conditions are met:
496 *
497 * 1. Redistributions of source code must retain the above copyright notice,
498 * this list of conditions and the following disclaimer.
499 *
500 * 2. Redistributions in binary form must reproduce the above copyright
501 * notice, this list of conditions and the following disclaimer in the
502 * documentation and/or other materials provided with the distribution.
503 *
504 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
505 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
506 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
507 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
508 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
509 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
510 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
511 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
512 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
513 * OF THE POSSIBILITY OF SUCH DAMAGE.
514 */
515
516#ifndef ECB_H
517#define ECB_H
518
519/* 16 bits major, 16 bits minor */
520#define ECB_VERSION 0x00010003
521
522#ifdef _WIN32
523 typedef signed char int8_t;
524 typedef unsigned char uint8_t;
525 typedef signed short int16_t;
526 typedef unsigned short uint16_t;
527 typedef signed int int32_t;
528 typedef unsigned int uint32_t;
236#if __GNUC__ >= 4 529 #if __GNUC__
237# define expect(expr,value) __builtin_expect ((expr),(value)) 530 typedef signed long long int64_t;
238# define noinline __attribute__ ((noinline)) 531 typedef unsigned long long uint64_t;
532 #else /* _MSC_VER || __BORLANDC__ */
533 typedef signed __int64 int64_t;
534 typedef unsigned __int64 uint64_t;
535 #endif
536 #ifdef _WIN64
537 #define ECB_PTRSIZE 8
538 typedef uint64_t uintptr_t;
539 typedef int64_t intptr_t;
540 #else
541 #define ECB_PTRSIZE 4
542 typedef uint32_t uintptr_t;
543 typedef int32_t intptr_t;
544 #endif
239#else 545#else
240# define expect(expr,value) (expr) 546 #include <inttypes.h>
241# define noinline 547 #if UINTMAX_MAX > 0xffffffffU
242# if __STDC_VERSION__ < 199901L 548 #define ECB_PTRSIZE 8
243# define inline 549 #else
550 #define ECB_PTRSIZE 4
551 #endif
244# endif 552#endif
553
554/* work around x32 idiocy by defining proper macros */
555#if __x86_64 || _M_AMD64
556 #if __ILP32
557 #define ECB_AMD64_X32 1
558 #else
559 #define ECB_AMD64 1
245#endif 560 #endif
561#endif
246 562
563/* many compilers define _GNUC_ to some versions but then only implement
564 * what their idiot authors think are the "more important" extensions,
565 * causing enormous grief in return for some better fake benchmark numbers.
566 * or so.
567 * we try to detect these and simply assume they are not gcc - if they have
568 * an issue with that they should have done it right in the first place.
569 */
570#ifndef ECB_GCC_VERSION
571 #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
572 #define ECB_GCC_VERSION(major,minor) 0
573 #else
574 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
575 #endif
576#endif
577
578#define ECB_C (__STDC__+0) /* this assumes that __STDC__ is either empty or a number */
579#define ECB_C99 (__STDC_VERSION__ >= 199901L)
580#define ECB_C11 (__STDC_VERSION__ >= 201112L)
581#define ECB_CPP (__cplusplus+0)
582#define ECB_CPP11 (__cplusplus >= 201103L)
583
584#if ECB_CPP
585 #define ECB_EXTERN_C extern "C"
586 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
587 #define ECB_EXTERN_C_END }
588#else
589 #define ECB_EXTERN_C extern
590 #define ECB_EXTERN_C_BEG
591 #define ECB_EXTERN_C_END
592#endif
593
594/*****************************************************************************/
595
596/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
597/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
598
599#if ECB_NO_THREADS
600 #define ECB_NO_SMP 1
601#endif
602
603#if ECB_NO_SMP
604 #define ECB_MEMORY_FENCE do { } while (0)
605#endif
606
607#ifndef ECB_MEMORY_FENCE
608 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
609 #if __i386 || __i386__
610 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
611 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
612 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
613 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__
614 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
615 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
616 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
617 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
618 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
619 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
620 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
621 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
622 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
623 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
624 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
625 #elif __sparc || __sparc__
626 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
627 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
628 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
629 #elif defined __s390__ || defined __s390x__
630 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
631 #elif defined __mips__
632 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
633 #elif defined __alpha__
634 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
635 #elif defined __hppa__
636 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
637 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
638 #elif defined __ia64__
639 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
640 #endif
641 #endif
642#endif
643
644#ifndef ECB_MEMORY_FENCE
645 #if ECB_GCC_VERSION(4,7)
646 /* see comment below (stdatomic.h) about the C11 memory model. */
647 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
648
649 /* The __has_feature syntax from clang is so misdesigned that we cannot use it
650 * without risking compile time errors with other compilers. We *could*
651 * define our own ecb_clang_has_feature, but I just can't be bothered to work
652 * around this shit time and again.
653 * #elif defined __clang && __has_feature (cxx_atomic)
654 * // see comment below (stdatomic.h) about the C11 memory model.
655 * #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
656 */
657
658 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
659 #define ECB_MEMORY_FENCE __sync_synchronize ()
660 #elif _MSC_VER >= 1400 /* VC++ 2005 */
661 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
662 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
663 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
664 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
665 #elif defined _WIN32
666 #include <WinNT.h>
667 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
668 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
669 #include <mbarrier.h>
670 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
671 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
672 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
673 #elif __xlC__
674 #define ECB_MEMORY_FENCE __sync ()
675 #endif
676#endif
677
678#ifndef ECB_MEMORY_FENCE
679 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
680 /* we assume that these memory fences work on all variables/all memory accesses, */
681 /* not just C11 atomics and atomic accesses */
682 #include <stdatomic.h>
683 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
684 /* any fence other than seq_cst, which isn't very efficient for us. */
685 /* Why that is, we don't know - either the C11 memory model is quite useless */
686 /* for most usages, or gcc and clang have a bug */
687 /* I *currently* lean towards the latter, and inefficiently implement */
688 /* all three of ecb's fences as a seq_cst fence */
689 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
690 #endif
691#endif
692
693#ifndef ECB_MEMORY_FENCE
694 #if !ECB_AVOID_PTHREADS
695 /*
696 * if you get undefined symbol references to pthread_mutex_lock,
697 * or failure to find pthread.h, then you should implement
698 * the ECB_MEMORY_FENCE operations for your cpu/compiler
699 * OR provide pthread.h and link against the posix thread library
700 * of your system.
701 */
702 #include <pthread.h>
703 #define ECB_NEEDS_PTHREADS 1
704 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
705
706 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
707 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
708 #endif
709#endif
710
711#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
712 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
713#endif
714
715#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
716 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
717#endif
718
719/*****************************************************************************/
720
721#if __cplusplus
722 #define ecb_inline static inline
723#elif ECB_GCC_VERSION(2,5)
724 #define ecb_inline static __inline__
725#elif ECB_C99
726 #define ecb_inline static inline
727#else
728 #define ecb_inline static
729#endif
730
731#if ECB_GCC_VERSION(3,3)
732 #define ecb_restrict __restrict__
733#elif ECB_C99
734 #define ecb_restrict restrict
735#else
736 #define ecb_restrict
737#endif
738
739typedef int ecb_bool;
740
741#define ECB_CONCAT_(a, b) a ## b
742#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
743#define ECB_STRINGIFY_(a) # a
744#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
745
746#define ecb_function_ ecb_inline
747
748#if ECB_GCC_VERSION(3,1)
749 #define ecb_attribute(attrlist) __attribute__(attrlist)
750 #define ecb_is_constant(expr) __builtin_constant_p (expr)
751 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
752 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
753#else
754 #define ecb_attribute(attrlist)
755 #define ecb_is_constant(expr) 0
756 #define ecb_expect(expr,value) (expr)
757 #define ecb_prefetch(addr,rw,locality)
758#endif
759
760/* no emulation for ecb_decltype */
761#if ECB_GCC_VERSION(4,5)
762 #define ecb_decltype(x) __decltype(x)
763#elif ECB_GCC_VERSION(3,0)
764 #define ecb_decltype(x) __typeof(x)
765#endif
766
767#define ecb_noinline ecb_attribute ((__noinline__))
768#define ecb_unused ecb_attribute ((__unused__))
769#define ecb_const ecb_attribute ((__const__))
770#define ecb_pure ecb_attribute ((__pure__))
771
772#if ECB_C11
773 #define ecb_noreturn _Noreturn
774#else
775 #define ecb_noreturn ecb_attribute ((__noreturn__))
776#endif
777
778#if ECB_GCC_VERSION(4,3)
779 #define ecb_artificial ecb_attribute ((__artificial__))
780 #define ecb_hot ecb_attribute ((__hot__))
781 #define ecb_cold ecb_attribute ((__cold__))
782#else
783 #define ecb_artificial
784 #define ecb_hot
785 #define ecb_cold
786#endif
787
788/* put around conditional expressions if you are very sure that the */
789/* expression is mostly true or mostly false. note that these return */
790/* booleans, not the expression. */
247#define expect_false(expr) expect ((expr) != 0, 0) 791#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
248#define expect_true(expr) expect ((expr) != 0, 1) 792#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
793/* for compatibility to the rest of the world */
794#define ecb_likely(expr) ecb_expect_true (expr)
795#define ecb_unlikely(expr) ecb_expect_false (expr)
796
797/* count trailing zero bits and count # of one bits */
798#if ECB_GCC_VERSION(3,4)
799 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
800 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
801 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
802 #define ecb_ctz32(x) __builtin_ctz (x)
803 #define ecb_ctz64(x) __builtin_ctzll (x)
804 #define ecb_popcount32(x) __builtin_popcount (x)
805 /* no popcountll */
806#else
807 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
808 ecb_function_ int
809 ecb_ctz32 (uint32_t x)
810 {
811 int r = 0;
812
813 x &= ~x + 1; /* this isolates the lowest bit */
814
815#if ECB_branchless_on_i386
816 r += !!(x & 0xaaaaaaaa) << 0;
817 r += !!(x & 0xcccccccc) << 1;
818 r += !!(x & 0xf0f0f0f0) << 2;
819 r += !!(x & 0xff00ff00) << 3;
820 r += !!(x & 0xffff0000) << 4;
821#else
822 if (x & 0xaaaaaaaa) r += 1;
823 if (x & 0xcccccccc) r += 2;
824 if (x & 0xf0f0f0f0) r += 4;
825 if (x & 0xff00ff00) r += 8;
826 if (x & 0xffff0000) r += 16;
827#endif
828
829 return r;
830 }
831
832 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
833 ecb_function_ int
834 ecb_ctz64 (uint64_t x)
835 {
836 int shift = x & 0xffffffffU ? 0 : 32;
837 return ecb_ctz32 (x >> shift) + shift;
838 }
839
840 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
841 ecb_function_ int
842 ecb_popcount32 (uint32_t x)
843 {
844 x -= (x >> 1) & 0x55555555;
845 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
846 x = ((x >> 4) + x) & 0x0f0f0f0f;
847 x *= 0x01010101;
848
849 return x >> 24;
850 }
851
852 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
853 ecb_function_ int ecb_ld32 (uint32_t x)
854 {
855 int r = 0;
856
857 if (x >> 16) { x >>= 16; r += 16; }
858 if (x >> 8) { x >>= 8; r += 8; }
859 if (x >> 4) { x >>= 4; r += 4; }
860 if (x >> 2) { x >>= 2; r += 2; }
861 if (x >> 1) { r += 1; }
862
863 return r;
864 }
865
866 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
867 ecb_function_ int ecb_ld64 (uint64_t x)
868 {
869 int r = 0;
870
871 if (x >> 32) { x >>= 32; r += 32; }
872
873 return r + ecb_ld32 (x);
874 }
875#endif
876
877ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const;
878ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
879ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const;
880ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
881
882ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
883ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
884{
885 return ( (x * 0x0802U & 0x22110U)
886 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
887}
888
889ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
890ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
891{
892 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
893 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
894 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
895 x = ( x >> 8 ) | ( x << 8);
896
897 return x;
898}
899
900ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
901ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
902{
903 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
904 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
905 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
906 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
907 x = ( x >> 16 ) | ( x << 16);
908
909 return x;
910}
911
912/* popcount64 is only available on 64 bit cpus as gcc builtin */
913/* so for this version we are lazy */
914ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
915ecb_function_ int
916ecb_popcount64 (uint64_t x)
917{
918 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
919}
920
921ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
922ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
923ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
924ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
925ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
926ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
927ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
928ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
929
930ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
931ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
932ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
933ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
934ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
935ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
936ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
937ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
938
939#if ECB_GCC_VERSION(4,3)
940 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
941 #define ecb_bswap32(x) __builtin_bswap32 (x)
942 #define ecb_bswap64(x) __builtin_bswap64 (x)
943#else
944 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
945 ecb_function_ uint16_t
946 ecb_bswap16 (uint16_t x)
947 {
948 return ecb_rotl16 (x, 8);
949 }
950
951 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
952 ecb_function_ uint32_t
953 ecb_bswap32 (uint32_t x)
954 {
955 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
956 }
957
958 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
959 ecb_function_ uint64_t
960 ecb_bswap64 (uint64_t x)
961 {
962 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
963 }
964#endif
965
966#if ECB_GCC_VERSION(4,5)
967 #define ecb_unreachable() __builtin_unreachable ()
968#else
969 /* this seems to work fine, but gcc always emits a warning for it :/ */
970 ecb_inline void ecb_unreachable (void) ecb_noreturn;
971 ecb_inline void ecb_unreachable (void) { }
972#endif
973
974/* try to tell the compiler that some condition is definitely true */
975#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
976
977ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
978ecb_inline unsigned char
979ecb_byteorder_helper (void)
980{
981 /* the union code still generates code under pressure in gcc, */
982 /* but less than using pointers, and always seems to */
983 /* successfully return a constant. */
984 /* the reason why we have this horrible preprocessor mess */
985 /* is to avoid it in all cases, at least on common architectures */
986 /* or when using a recent enough gcc version (>= 4.6) */
987#if __i386 || __i386__ || _M_X86 || __amd64 || __amd64__ || _M_X64
988 return 0x44;
989#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
990 return 0x44;
991#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
992 return 0x11;
993#else
994 union
995 {
996 uint32_t i;
997 uint8_t c;
998 } u = { 0x11223344 };
999 return u.c;
1000#endif
1001}
1002
1003ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
1004ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
1005ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
1006ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
1007
1008#if ECB_GCC_VERSION(3,0) || ECB_C99
1009 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1010#else
1011 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1012#endif
1013
1014#if __cplusplus
1015 template<typename T>
1016 static inline T ecb_div_rd (T val, T div)
1017 {
1018 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1019 }
1020 template<typename T>
1021 static inline T ecb_div_ru (T val, T div)
1022 {
1023 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1024 }
1025#else
1026 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1027 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1028#endif
1029
1030#if ecb_cplusplus_does_not_suck
1031 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1032 template<typename T, int N>
1033 static inline int ecb_array_length (const T (&arr)[N])
1034 {
1035 return N;
1036 }
1037#else
1038 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1039#endif
1040
1041/*******************************************************************************/
1042/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1043
1044/* basically, everything uses "ieee pure-endian" floating point numbers */
1045/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1046#if 0 \
1047 || __i386 || __i386__ \
1048 || __amd64 || __amd64__ || __x86_64 || __x86_64__ \
1049 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1050 || defined __arm__ && defined __ARM_EABI__ \
1051 || defined __s390__ || defined __s390x__ \
1052 || defined __mips__ \
1053 || defined __alpha__ \
1054 || defined __hppa__ \
1055 || defined __ia64__ \
1056 || defined _M_IX86 || defined _M_AMD64 || defined _M_IA64
1057 #define ECB_STDFP 1
1058 #include <string.h> /* for memcpy */
1059#else
1060 #define ECB_STDFP 0
1061 #include <math.h> /* for frexp*, ldexp* */
1062#endif
1063
1064#ifndef ECB_NO_LIBM
1065
1066 /* convert a float to ieee single/binary32 */
1067 ecb_function_ uint32_t ecb_float_to_binary32 (float x) ecb_const;
1068 ecb_function_ uint32_t
1069 ecb_float_to_binary32 (float x)
1070 {
1071 uint32_t r;
1072
1073 #if ECB_STDFP
1074 memcpy (&r, &x, 4);
1075 #else
1076 /* slow emulation, works for anything but -0 */
1077 uint32_t m;
1078 int e;
1079
1080 if (x == 0e0f ) return 0x00000000U;
1081 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1082 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1083 if (x != x ) return 0x7fbfffffU;
1084
1085 m = frexpf (x, &e) * 0x1000000U;
1086
1087 r = m & 0x80000000U;
1088
1089 if (r)
1090 m = -m;
1091
1092 if (e <= -126)
1093 {
1094 m &= 0xffffffU;
1095 m >>= (-125 - e);
1096 e = -126;
1097 }
1098
1099 r |= (e + 126) << 23;
1100 r |= m & 0x7fffffU;
1101 #endif
1102
1103 return r;
1104 }
1105
1106 /* converts an ieee single/binary32 to a float */
1107 ecb_function_ float ecb_binary32_to_float (uint32_t x) ecb_const;
1108 ecb_function_ float
1109 ecb_binary32_to_float (uint32_t x)
1110 {
1111 float r;
1112
1113 #if ECB_STDFP
1114 memcpy (&r, &x, 4);
1115 #else
1116 /* emulation, only works for normals and subnormals and +0 */
1117 int neg = x >> 31;
1118 int e = (x >> 23) & 0xffU;
1119
1120 x &= 0x7fffffU;
1121
1122 if (e)
1123 x |= 0x800000U;
1124 else
1125 e = 1;
1126
1127 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1128 r = ldexpf (x * (0.5f / 0x800000U), e - 126);
1129
1130 r = neg ? -r : r;
1131 #endif
1132
1133 return r;
1134 }
1135
1136 /* convert a double to ieee double/binary64 */
1137 ecb_function_ uint64_t ecb_double_to_binary64 (double x) ecb_const;
1138 ecb_function_ uint64_t
1139 ecb_double_to_binary64 (double x)
1140 {
1141 uint64_t r;
1142
1143 #if ECB_STDFP
1144 memcpy (&r, &x, 8);
1145 #else
1146 /* slow emulation, works for anything but -0 */
1147 uint64_t m;
1148 int e;
1149
1150 if (x == 0e0 ) return 0x0000000000000000U;
1151 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1152 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1153 if (x != x ) return 0X7ff7ffffffffffffU;
1154
1155 m = frexp (x, &e) * 0x20000000000000U;
1156
1157 r = m & 0x8000000000000000;;
1158
1159 if (r)
1160 m = -m;
1161
1162 if (e <= -1022)
1163 {
1164 m &= 0x1fffffffffffffU;
1165 m >>= (-1021 - e);
1166 e = -1022;
1167 }
1168
1169 r |= ((uint64_t)(e + 1022)) << 52;
1170 r |= m & 0xfffffffffffffU;
1171 #endif
1172
1173 return r;
1174 }
1175
1176 /* converts an ieee double/binary64 to a double */
1177 ecb_function_ double ecb_binary64_to_double (uint64_t x) ecb_const;
1178 ecb_function_ double
1179 ecb_binary64_to_double (uint64_t x)
1180 {
1181 double r;
1182
1183 #if ECB_STDFP
1184 memcpy (&r, &x, 8);
1185 #else
1186 /* emulation, only works for normals and subnormals and +0 */
1187 int neg = x >> 63;
1188 int e = (x >> 52) & 0x7ffU;
1189
1190 x &= 0xfffffffffffffU;
1191
1192 if (e)
1193 x |= 0x10000000000000U;
1194 else
1195 e = 1;
1196
1197 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1198 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1199
1200 r = neg ? -r : r;
1201 #endif
1202
1203 return r;
1204 }
1205
1206#endif
1207
1208#endif
1209
1210/* ECB.H END */
1211
1212#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1213/* if your architecture doesn't need memory fences, e.g. because it is
1214 * single-cpu/core, or if you use libev in a project that doesn't use libev
1215 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
1216 * libev, in which cases the memory fences become nops.
1217 * alternatively, you can remove this #error and link against libpthread,
1218 * which will then provide the memory fences.
1219 */
1220# error "memory fences not defined for your architecture, please report"
1221#endif
1222
1223#ifndef ECB_MEMORY_FENCE
1224# define ECB_MEMORY_FENCE do { } while (0)
1225# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1226# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1227#endif
1228
1229#define expect_false(cond) ecb_expect_false (cond)
1230#define expect_true(cond) ecb_expect_true (cond)
1231#define noinline ecb_noinline
1232
249#define inline_size static inline 1233#define inline_size ecb_inline
250 1234
251#if EV_MINIMAL 1235#if EV_FEATURE_CODE
1236# define inline_speed ecb_inline
1237#else
252# define inline_speed static noinline 1238# define inline_speed static noinline
1239#endif
1240
1241#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
1242
1243#if EV_MINPRI == EV_MAXPRI
1244# define ABSPRI(w) (((W)w), 0)
253#else 1245#else
254# define inline_speed static inline
255#endif
256
257#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
258#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1246# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
1247#endif
259 1248
260#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1249#define EMPTY /* required for microsofts broken pseudo-c compiler */
261#define EMPTY2(a,b) /* used to suppress some warnings */ 1250#define EMPTY2(a,b) /* used to suppress some warnings */
262 1251
263typedef ev_watcher *W; 1252typedef ev_watcher *W;
264typedef ev_watcher_list *WL; 1253typedef ev_watcher_list *WL;
265typedef ev_watcher_time *WT; 1254typedef ev_watcher_time *WT;
266 1255
1256#define ev_active(w) ((W)(w))->active
1257#define ev_at(w) ((WT)(w))->at
1258
1259#if EV_USE_REALTIME
1260/* sig_atomic_t is used to avoid per-thread variables or locking but still */
1261/* giving it a reasonably high chance of working on typical architectures */
1262static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
1263#endif
1264
1265#if EV_USE_MONOTONIC
267static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 1266static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
1267#endif
1268
1269#ifndef EV_FD_TO_WIN32_HANDLE
1270# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
1271#endif
1272#ifndef EV_WIN32_HANDLE_TO_FD
1273# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
1274#endif
1275#ifndef EV_WIN32_CLOSE_FD
1276# define EV_WIN32_CLOSE_FD(fd) close (fd)
1277#endif
268 1278
269#ifdef _WIN32 1279#ifdef _WIN32
270# include "ev_win32.c" 1280# include "ev_win32.c"
271#endif 1281#endif
272 1282
273/*****************************************************************************/ 1283/*****************************************************************************/
274 1284
1285/* define a suitable floor function (only used by periodics atm) */
1286
1287#if EV_USE_FLOOR
1288# include <math.h>
1289# define ev_floor(v) floor (v)
1290#else
1291
1292#include <float.h>
1293
1294/* a floor() replacement function, should be independent of ev_tstamp type */
1295static ev_tstamp noinline
1296ev_floor (ev_tstamp v)
1297{
1298 /* the choice of shift factor is not terribly important */
1299#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1300 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1301#else
1302 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1303#endif
1304
1305 /* argument too large for an unsigned long? */
1306 if (expect_false (v >= shift))
1307 {
1308 ev_tstamp f;
1309
1310 if (v == v - 1.)
1311 return v; /* very large number */
1312
1313 f = shift * ev_floor (v * (1. / shift));
1314 return f + ev_floor (v - f);
1315 }
1316
1317 /* special treatment for negative args? */
1318 if (expect_false (v < 0.))
1319 {
1320 ev_tstamp f = -ev_floor (-v);
1321
1322 return f - (f == v ? 0 : 1);
1323 }
1324
1325 /* fits into an unsigned long */
1326 return (unsigned long)v;
1327}
1328
1329#endif
1330
1331/*****************************************************************************/
1332
1333#ifdef __linux
1334# include <sys/utsname.h>
1335#endif
1336
1337static unsigned int noinline ecb_cold
1338ev_linux_version (void)
1339{
1340#ifdef __linux
1341 unsigned int v = 0;
1342 struct utsname buf;
1343 int i;
1344 char *p = buf.release;
1345
1346 if (uname (&buf))
1347 return 0;
1348
1349 for (i = 3+1; --i; )
1350 {
1351 unsigned int c = 0;
1352
1353 for (;;)
1354 {
1355 if (*p >= '0' && *p <= '9')
1356 c = c * 10 + *p++ - '0';
1357 else
1358 {
1359 p += *p == '.';
1360 break;
1361 }
1362 }
1363
1364 v = (v << 8) | c;
1365 }
1366
1367 return v;
1368#else
1369 return 0;
1370#endif
1371}
1372
1373/*****************************************************************************/
1374
1375#if EV_AVOID_STDIO
1376static void noinline ecb_cold
1377ev_printerr (const char *msg)
1378{
1379 write (STDERR_FILENO, msg, strlen (msg));
1380}
1381#endif
1382
275static void (*syserr_cb)(const char *msg); 1383static void (*syserr_cb)(const char *msg) EV_THROW;
276 1384
277void 1385void ecb_cold
278ev_set_syserr_cb (void (*cb)(const char *msg)) 1386ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
279{ 1387{
280 syserr_cb = cb; 1388 syserr_cb = cb;
281} 1389}
282 1390
283static void noinline 1391static void noinline ecb_cold
284syserr (const char *msg) 1392ev_syserr (const char *msg)
285{ 1393{
286 if (!msg) 1394 if (!msg)
287 msg = "(libev) system error"; 1395 msg = "(libev) system error";
288 1396
289 if (syserr_cb) 1397 if (syserr_cb)
290 syserr_cb (msg); 1398 syserr_cb (msg);
291 else 1399 else
292 { 1400 {
1401#if EV_AVOID_STDIO
1402 ev_printerr (msg);
1403 ev_printerr (": ");
1404 ev_printerr (strerror (errno));
1405 ev_printerr ("\n");
1406#else
293 perror (msg); 1407 perror (msg);
1408#endif
294 abort (); 1409 abort ();
295 } 1410 }
296} 1411}
297 1412
1413static void *
1414ev_realloc_emul (void *ptr, long size) EV_THROW
1415{
1416 /* some systems, notably openbsd and darwin, fail to properly
1417 * implement realloc (x, 0) (as required by both ansi c-89 and
1418 * the single unix specification, so work around them here.
1419 * recently, also (at least) fedora and debian started breaking it,
1420 * despite documenting it otherwise.
1421 */
1422
1423 if (size)
1424 return realloc (ptr, size);
1425
1426 free (ptr);
1427 return 0;
1428}
1429
298static void *(*alloc)(void *ptr, long size); 1430static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
299 1431
300void 1432void ecb_cold
301ev_set_allocator (void *(*cb)(void *ptr, long size)) 1433ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
302{ 1434{
303 alloc = cb; 1435 alloc = cb;
304} 1436}
305 1437
306inline_speed void * 1438inline_speed void *
307ev_realloc (void *ptr, long size) 1439ev_realloc (void *ptr, long size)
308{ 1440{
309 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); 1441 ptr = alloc (ptr, size);
310 1442
311 if (!ptr && size) 1443 if (!ptr && size)
312 { 1444 {
1445#if EV_AVOID_STDIO
1446 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1447#else
313 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1448 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1449#endif
314 abort (); 1450 abort ();
315 } 1451 }
316 1452
317 return ptr; 1453 return ptr;
318} 1454}
… …
320#define ev_malloc(size) ev_realloc (0, (size)) 1456#define ev_malloc(size) ev_realloc (0, (size))
321#define ev_free(ptr) ev_realloc ((ptr), 0) 1457#define ev_free(ptr) ev_realloc ((ptr), 0)
322 1458
323/*****************************************************************************/ 1459/*****************************************************************************/
324 1460
1461/* set in reify when reification needed */
1462#define EV_ANFD_REIFY 1
1463
1464/* file descriptor info structure */
325typedef struct 1465typedef struct
326{ 1466{
327 WL head; 1467 WL head;
328 unsigned char events; 1468 unsigned char events; /* the events watched for */
1469 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
1470 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
329 unsigned char reify; 1471 unsigned char unused;
1472#if EV_USE_EPOLL
1473 unsigned int egen; /* generation counter to counter epoll bugs */
1474#endif
330#if EV_SELECT_IS_WINSOCKET 1475#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
331 SOCKET handle; 1476 SOCKET handle;
332#endif 1477#endif
1478#if EV_USE_IOCP
1479 OVERLAPPED or, ow;
1480#endif
333} ANFD; 1481} ANFD;
334 1482
1483/* stores the pending event set for a given watcher */
335typedef struct 1484typedef struct
336{ 1485{
337 W w; 1486 W w;
338 int events; 1487 int events; /* the pending event set for the given watcher */
339} ANPENDING; 1488} ANPENDING;
340 1489
341#if EV_USE_INOTIFY 1490#if EV_USE_INOTIFY
1491/* hash table entry per inotify-id */
342typedef struct 1492typedef struct
343{ 1493{
344 WL head; 1494 WL head;
345} ANFS; 1495} ANFS;
1496#endif
1497
1498/* Heap Entry */
1499#if EV_HEAP_CACHE_AT
1500 /* a heap element */
1501 typedef struct {
1502 ev_tstamp at;
1503 WT w;
1504 } ANHE;
1505
1506 #define ANHE_w(he) (he).w /* access watcher, read-write */
1507 #define ANHE_at(he) (he).at /* access cached at, read-only */
1508 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
1509#else
1510 /* a heap element */
1511 typedef WT ANHE;
1512
1513 #define ANHE_w(he) (he)
1514 #define ANHE_at(he) (he)->at
1515 #define ANHE_at_cache(he)
346#endif 1516#endif
347 1517
348#if EV_MULTIPLICITY 1518#if EV_MULTIPLICITY
349 1519
350 struct ev_loop 1520 struct ev_loop
… …
356 #undef VAR 1526 #undef VAR
357 }; 1527 };
358 #include "ev_wrap.h" 1528 #include "ev_wrap.h"
359 1529
360 static struct ev_loop default_loop_struct; 1530 static struct ev_loop default_loop_struct;
361 struct ev_loop *ev_default_loop_ptr; 1531 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
362 1532
363#else 1533#else
364 1534
365 ev_tstamp ev_rt_now; 1535 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
366 #define VAR(name,decl) static decl; 1536 #define VAR(name,decl) static decl;
367 #include "ev_vars.h" 1537 #include "ev_vars.h"
368 #undef VAR 1538 #undef VAR
369 1539
370 static int ev_default_loop_ptr; 1540 static int ev_default_loop_ptr;
371 1541
372#endif 1542#endif
373 1543
1544#if EV_FEATURE_API
1545# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
1546# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
1547# define EV_INVOKE_PENDING invoke_cb (EV_A)
1548#else
1549# define EV_RELEASE_CB (void)0
1550# define EV_ACQUIRE_CB (void)0
1551# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
1552#endif
1553
1554#define EVBREAK_RECURSE 0x80
1555
374/*****************************************************************************/ 1556/*****************************************************************************/
375 1557
1558#ifndef EV_HAVE_EV_TIME
376ev_tstamp 1559ev_tstamp
377ev_time (void) 1560ev_time (void) EV_THROW
378{ 1561{
379#if EV_USE_REALTIME 1562#if EV_USE_REALTIME
1563 if (expect_true (have_realtime))
1564 {
380 struct timespec ts; 1565 struct timespec ts;
381 clock_gettime (CLOCK_REALTIME, &ts); 1566 clock_gettime (CLOCK_REALTIME, &ts);
382 return ts.tv_sec + ts.tv_nsec * 1e-9; 1567 return ts.tv_sec + ts.tv_nsec * 1e-9;
383#else 1568 }
1569#endif
1570
384 struct timeval tv; 1571 struct timeval tv;
385 gettimeofday (&tv, 0); 1572 gettimeofday (&tv, 0);
386 return tv.tv_sec + tv.tv_usec * 1e-6; 1573 return tv.tv_sec + tv.tv_usec * 1e-6;
387#endif
388} 1574}
1575#endif
389 1576
390ev_tstamp inline_size 1577inline_size ev_tstamp
391get_clock (void) 1578get_clock (void)
392{ 1579{
393#if EV_USE_MONOTONIC 1580#if EV_USE_MONOTONIC
394 if (expect_true (have_monotonic)) 1581 if (expect_true (have_monotonic))
395 { 1582 {
… …
402 return ev_time (); 1589 return ev_time ();
403} 1590}
404 1591
405#if EV_MULTIPLICITY 1592#if EV_MULTIPLICITY
406ev_tstamp 1593ev_tstamp
407ev_now (EV_P) 1594ev_now (EV_P) EV_THROW
408{ 1595{
409 return ev_rt_now; 1596 return ev_rt_now;
410} 1597}
411#endif 1598#endif
412 1599
413int inline_size 1600void
1601ev_sleep (ev_tstamp delay) EV_THROW
1602{
1603 if (delay > 0.)
1604 {
1605#if EV_USE_NANOSLEEP
1606 struct timespec ts;
1607
1608 EV_TS_SET (ts, delay);
1609 nanosleep (&ts, 0);
1610#elif defined _WIN32
1611 Sleep ((unsigned long)(delay * 1e3));
1612#else
1613 struct timeval tv;
1614
1615 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
1616 /* something not guaranteed by newer posix versions, but guaranteed */
1617 /* by older ones */
1618 EV_TV_SET (tv, delay);
1619 select (0, 0, 0, 0, &tv);
1620#endif
1621 }
1622}
1623
1624/*****************************************************************************/
1625
1626#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
1627
1628/* find a suitable new size for the given array, */
1629/* hopefully by rounding to a nice-to-malloc size */
1630inline_size int
414array_nextsize (int elem, int cur, int cnt) 1631array_nextsize (int elem, int cur, int cnt)
415{ 1632{
416 int ncur = cur + 1; 1633 int ncur = cur + 1;
417 1634
418 do 1635 do
419 ncur <<= 1; 1636 ncur <<= 1;
420 while (cnt > ncur); 1637 while (cnt > ncur);
421 1638
422 /* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */ 1639 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
423 if (elem * ncur > 4096) 1640 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
424 { 1641 {
425 ncur *= elem; 1642 ncur *= elem;
426 ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095; 1643 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
427 ncur = ncur - sizeof (void *) * 4; 1644 ncur = ncur - sizeof (void *) * 4;
428 ncur /= elem; 1645 ncur /= elem;
429 } 1646 }
430 1647
431 return ncur; 1648 return ncur;
432} 1649}
433 1650
434static noinline void * 1651static void * noinline ecb_cold
435array_realloc (int elem, void *base, int *cur, int cnt) 1652array_realloc (int elem, void *base, int *cur, int cnt)
436{ 1653{
437 *cur = array_nextsize (elem, *cur, cnt); 1654 *cur = array_nextsize (elem, *cur, cnt);
438 return ev_realloc (base, elem * *cur); 1655 return ev_realloc (base, elem * *cur);
439} 1656}
1657
1658#define array_init_zero(base,count) \
1659 memset ((void *)(base), 0, sizeof (*(base)) * (count))
440 1660
441#define array_needsize(type,base,cur,cnt,init) \ 1661#define array_needsize(type,base,cur,cnt,init) \
442 if (expect_false ((cnt) > (cur))) \ 1662 if (expect_false ((cnt) > (cur))) \
443 { \ 1663 { \
444 int ocur_ = (cur); \ 1664 int ecb_unused ocur_ = (cur); \
445 (base) = (type *)array_realloc \ 1665 (base) = (type *)array_realloc \
446 (sizeof (type), (base), &(cur), (cnt)); \ 1666 (sizeof (type), (base), &(cur), (cnt)); \
447 init ((base) + (ocur_), (cur) - ocur_); \ 1667 init ((base) + (ocur_), (cur) - ocur_); \
448 } 1668 }
449 1669
… …
456 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 1676 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
457 } 1677 }
458#endif 1678#endif
459 1679
460#define array_free(stem, idx) \ 1680#define array_free(stem, idx) \
461 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 1681 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
462 1682
463/*****************************************************************************/ 1683/*****************************************************************************/
464 1684
1685/* dummy callback for pending events */
1686static void noinline
1687pendingcb (EV_P_ ev_prepare *w, int revents)
1688{
1689}
1690
465void noinline 1691void noinline
466ev_feed_event (EV_P_ void *w, int revents) 1692ev_feed_event (EV_P_ void *w, int revents) EV_THROW
467{ 1693{
468 W w_ = (W)w; 1694 W w_ = (W)w;
469 int pri = ABSPRI (w_); 1695 int pri = ABSPRI (w_);
470 1696
471 if (expect_false (w_->pending)) 1697 if (expect_false (w_->pending))
… …
475 w_->pending = ++pendingcnt [pri]; 1701 w_->pending = ++pendingcnt [pri];
476 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1702 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
477 pendings [pri][w_->pending - 1].w = w_; 1703 pendings [pri][w_->pending - 1].w = w_;
478 pendings [pri][w_->pending - 1].events = revents; 1704 pendings [pri][w_->pending - 1].events = revents;
479 } 1705 }
480}
481 1706
482void inline_speed 1707 pendingpri = NUMPRI - 1;
1708}
1709
1710inline_speed void
1711feed_reverse (EV_P_ W w)
1712{
1713 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
1714 rfeeds [rfeedcnt++] = w;
1715}
1716
1717inline_size void
1718feed_reverse_done (EV_P_ int revents)
1719{
1720 do
1721 ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
1722 while (rfeedcnt);
1723}
1724
1725inline_speed void
483queue_events (EV_P_ W *events, int eventcnt, int type) 1726queue_events (EV_P_ W *events, int eventcnt, int type)
484{ 1727{
485 int i; 1728 int i;
486 1729
487 for (i = 0; i < eventcnt; ++i) 1730 for (i = 0; i < eventcnt; ++i)
488 ev_feed_event (EV_A_ events [i], type); 1731 ev_feed_event (EV_A_ events [i], type);
489} 1732}
490 1733
491/*****************************************************************************/ 1734/*****************************************************************************/
492 1735
493void inline_size 1736inline_speed void
494anfds_init (ANFD *base, int count)
495{
496 while (count--)
497 {
498 base->head = 0;
499 base->events = EV_NONE;
500 base->reify = 0;
501
502 ++base;
503 }
504}
505
506void inline_speed
507fd_event (EV_P_ int fd, int revents) 1737fd_event_nocheck (EV_P_ int fd, int revents)
508{ 1738{
509 ANFD *anfd = anfds + fd; 1739 ANFD *anfd = anfds + fd;
510 ev_io *w; 1740 ev_io *w;
511 1741
512 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1742 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
516 if (ev) 1746 if (ev)
517 ev_feed_event (EV_A_ (W)w, ev); 1747 ev_feed_event (EV_A_ (W)w, ev);
518 } 1748 }
519} 1749}
520 1750
1751/* do not submit kernel events for fds that have reify set */
1752/* because that means they changed while we were polling for new events */
1753inline_speed void
1754fd_event (EV_P_ int fd, int revents)
1755{
1756 ANFD *anfd = anfds + fd;
1757
1758 if (expect_true (!anfd->reify))
1759 fd_event_nocheck (EV_A_ fd, revents);
1760}
1761
521void 1762void
522ev_feed_fd_event (EV_P_ int fd, int revents) 1763ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
523{ 1764{
524 if (fd >= 0 && fd < anfdmax) 1765 if (fd >= 0 && fd < anfdmax)
525 fd_event (EV_A_ fd, revents); 1766 fd_event_nocheck (EV_A_ fd, revents);
526} 1767}
527 1768
528void inline_size 1769/* make sure the external fd watch events are in-sync */
1770/* with the kernel/libev internal state */
1771inline_size void
529fd_reify (EV_P) 1772fd_reify (EV_P)
530{ 1773{
531 int i; 1774 int i;
1775
1776#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1777 for (i = 0; i < fdchangecnt; ++i)
1778 {
1779 int fd = fdchanges [i];
1780 ANFD *anfd = anfds + fd;
1781
1782 if (anfd->reify & EV__IOFDSET && anfd->head)
1783 {
1784 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1785
1786 if (handle != anfd->handle)
1787 {
1788 unsigned long arg;
1789
1790 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1791
1792 /* handle changed, but fd didn't - we need to do it in two steps */
1793 backend_modify (EV_A_ fd, anfd->events, 0);
1794 anfd->events = 0;
1795 anfd->handle = handle;
1796 }
1797 }
1798 }
1799#endif
532 1800
533 for (i = 0; i < fdchangecnt; ++i) 1801 for (i = 0; i < fdchangecnt; ++i)
534 { 1802 {
535 int fd = fdchanges [i]; 1803 int fd = fdchanges [i];
536 ANFD *anfd = anfds + fd; 1804 ANFD *anfd = anfds + fd;
537 ev_io *w; 1805 ev_io *w;
538 1806
539 unsigned char events = 0; 1807 unsigned char o_events = anfd->events;
1808 unsigned char o_reify = anfd->reify;
540 1809
541 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1810 anfd->reify = 0;
542 events |= (unsigned char)w->events;
543 1811
544#if EV_SELECT_IS_WINSOCKET 1812 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
545 if (events)
546 { 1813 {
547 unsigned long argp; 1814 anfd->events = 0;
548 anfd->handle = _get_osfhandle (fd); 1815
549 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); 1816 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
1817 anfd->events |= (unsigned char)w->events;
1818
1819 if (o_events != anfd->events)
1820 o_reify = EV__IOFDSET; /* actually |= */
550 } 1821 }
551#endif
552 1822
553 { 1823 if (o_reify & EV__IOFDSET)
554 unsigned char o_events = anfd->events;
555 unsigned char o_reify = anfd->reify;
556
557 anfd->reify = 0;
558 anfd->events = events;
559
560 if (o_events != events || o_reify & EV_IOFDSET)
561 backend_modify (EV_A_ fd, o_events, events); 1824 backend_modify (EV_A_ fd, o_events, anfd->events);
562 }
563 } 1825 }
564 1826
565 fdchangecnt = 0; 1827 fdchangecnt = 0;
566} 1828}
567 1829
568void inline_size 1830/* something about the given fd changed */
1831inline_size void
569fd_change (EV_P_ int fd, int flags) 1832fd_change (EV_P_ int fd, int flags)
570{ 1833{
571 unsigned char reify = anfds [fd].reify; 1834 unsigned char reify = anfds [fd].reify;
572 anfds [fd].reify |= flags; 1835 anfds [fd].reify |= flags;
573 1836
… …
577 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 1840 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
578 fdchanges [fdchangecnt - 1] = fd; 1841 fdchanges [fdchangecnt - 1] = fd;
579 } 1842 }
580} 1843}
581 1844
582void inline_speed 1845/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1846inline_speed void ecb_cold
583fd_kill (EV_P_ int fd) 1847fd_kill (EV_P_ int fd)
584{ 1848{
585 ev_io *w; 1849 ev_io *w;
586 1850
587 while ((w = (ev_io *)anfds [fd].head)) 1851 while ((w = (ev_io *)anfds [fd].head))
… …
589 ev_io_stop (EV_A_ w); 1853 ev_io_stop (EV_A_ w);
590 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1854 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
591 } 1855 }
592} 1856}
593 1857
594int inline_size 1858/* check whether the given fd is actually valid, for error recovery */
1859inline_size int ecb_cold
595fd_valid (int fd) 1860fd_valid (int fd)
596{ 1861{
597#ifdef _WIN32 1862#ifdef _WIN32
598 return _get_osfhandle (fd) != -1; 1863 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
599#else 1864#else
600 return fcntl (fd, F_GETFD) != -1; 1865 return fcntl (fd, F_GETFD) != -1;
601#endif 1866#endif
602} 1867}
603 1868
604/* called on EBADF to verify fds */ 1869/* called on EBADF to verify fds */
605static void noinline 1870static void noinline ecb_cold
606fd_ebadf (EV_P) 1871fd_ebadf (EV_P)
607{ 1872{
608 int fd; 1873 int fd;
609 1874
610 for (fd = 0; fd < anfdmax; ++fd) 1875 for (fd = 0; fd < anfdmax; ++fd)
611 if (anfds [fd].events) 1876 if (anfds [fd].events)
612 if (!fd_valid (fd) == -1 && errno == EBADF) 1877 if (!fd_valid (fd) && errno == EBADF)
613 fd_kill (EV_A_ fd); 1878 fd_kill (EV_A_ fd);
614} 1879}
615 1880
616/* called on ENOMEM in select/poll to kill some fds and retry */ 1881/* called on ENOMEM in select/poll to kill some fds and retry */
617static void noinline 1882static void noinline ecb_cold
618fd_enomem (EV_P) 1883fd_enomem (EV_P)
619{ 1884{
620 int fd; 1885 int fd;
621 1886
622 for (fd = anfdmax; fd--; ) 1887 for (fd = anfdmax; fd--; )
623 if (anfds [fd].events) 1888 if (anfds [fd].events)
624 { 1889 {
625 fd_kill (EV_A_ fd); 1890 fd_kill (EV_A_ fd);
626 return; 1891 break;
627 } 1892 }
628} 1893}
629 1894
630/* usually called after fork if backend needs to re-arm all fds from scratch */ 1895/* usually called after fork if backend needs to re-arm all fds from scratch */
631static void noinline 1896static void noinline
… …
635 1900
636 for (fd = 0; fd < anfdmax; ++fd) 1901 for (fd = 0; fd < anfdmax; ++fd)
637 if (anfds [fd].events) 1902 if (anfds [fd].events)
638 { 1903 {
639 anfds [fd].events = 0; 1904 anfds [fd].events = 0;
1905 anfds [fd].emask = 0;
640 fd_change (EV_A_ fd, EV_IOFDSET | 1); 1906 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
641 } 1907 }
642} 1908}
643 1909
644/*****************************************************************************/ 1910/* used to prepare libev internal fd's */
645 1911/* this is not fork-safe */
646void inline_speed 1912inline_speed void
647upheap (WT *heap, int k)
648{
649 WT w = heap [k];
650
651 while (k)
652 {
653 int p = (k - 1) >> 1;
654
655 if (heap [p]->at <= w->at)
656 break;
657
658 heap [k] = heap [p];
659 ((W)heap [k])->active = k + 1;
660 k = p;
661 }
662
663 heap [k] = w;
664 ((W)heap [k])->active = k + 1;
665}
666
667void inline_speed
668downheap (WT *heap, int N, int k)
669{
670 WT w = heap [k];
671
672 for (;;)
673 {
674 int c = (k << 1) + 1;
675
676 if (c >= N)
677 break;
678
679 c += c + 1 < N && heap [c]->at > heap [c + 1]->at
680 ? 1 : 0;
681
682 if (w->at <= heap [c]->at)
683 break;
684
685 heap [k] = heap [c];
686 ((W)heap [k])->active = k + 1;
687
688 k = c;
689 }
690
691 heap [k] = w;
692 ((W)heap [k])->active = k + 1;
693}
694
695void inline_size
696adjustheap (WT *heap, int N, int k)
697{
698 upheap (heap, k);
699 downheap (heap, N, k);
700}
701
702/*****************************************************************************/
703
704typedef struct
705{
706 WL head;
707 sig_atomic_t volatile gotsig;
708} ANSIG;
709
710static ANSIG *signals;
711static int signalmax;
712
713static int sigpipe [2];
714static sig_atomic_t volatile gotsig;
715static ev_io sigev;
716
717void inline_size
718signals_init (ANSIG *base, int count)
719{
720 while (count--)
721 {
722 base->head = 0;
723 base->gotsig = 0;
724
725 ++base;
726 }
727}
728
729static void
730sighandler (int signum)
731{
732#if _WIN32
733 signal (signum, sighandler);
734#endif
735
736 signals [signum - 1].gotsig = 1;
737
738 if (!gotsig)
739 {
740 int old_errno = errno;
741 gotsig = 1;
742 write (sigpipe [1], &signum, 1);
743 errno = old_errno;
744 }
745}
746
747void noinline
748ev_feed_signal_event (EV_P_ int signum)
749{
750 WL w;
751
752#if EV_MULTIPLICITY
753 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
754#endif
755
756 --signum;
757
758 if (signum < 0 || signum >= signalmax)
759 return;
760
761 signals [signum].gotsig = 0;
762
763 for (w = signals [signum].head; w; w = w->next)
764 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
765}
766
767static void
768sigcb (EV_P_ ev_io *iow, int revents)
769{
770 int signum;
771
772 read (sigpipe [0], &revents, 1);
773 gotsig = 0;
774
775 for (signum = signalmax; signum--; )
776 if (signals [signum].gotsig)
777 ev_feed_signal_event (EV_A_ signum + 1);
778}
779
780void inline_speed
781fd_intern (int fd) 1913fd_intern (int fd)
782{ 1914{
783#ifdef _WIN32 1915#ifdef _WIN32
784 int arg = 1; 1916 unsigned long arg = 1;
785 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 1917 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
786#else 1918#else
787 fcntl (fd, F_SETFD, FD_CLOEXEC); 1919 fcntl (fd, F_SETFD, FD_CLOEXEC);
788 fcntl (fd, F_SETFL, O_NONBLOCK); 1920 fcntl (fd, F_SETFL, O_NONBLOCK);
789#endif 1921#endif
790} 1922}
791 1923
792static void noinline
793siginit (EV_P)
794{
795 fd_intern (sigpipe [0]);
796 fd_intern (sigpipe [1]);
797
798 ev_io_set (&sigev, sigpipe [0], EV_READ);
799 ev_io_start (EV_A_ &sigev);
800 ev_unref (EV_A); /* child watcher should not keep loop alive */
801}
802
803/*****************************************************************************/ 1924/*****************************************************************************/
804 1925
1926/*
1927 * the heap functions want a real array index. array index 0 is guaranteed to not
1928 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
1929 * the branching factor of the d-tree.
1930 */
1931
1932/*
1933 * at the moment we allow libev the luxury of two heaps,
1934 * a small-code-size 2-heap one and a ~1.5kb larger 4-heap
1935 * which is more cache-efficient.
1936 * the difference is about 5% with 50000+ watchers.
1937 */
1938#if EV_USE_4HEAP
1939
1940#define DHEAP 4
1941#define HEAP0 (DHEAP - 1) /* index of first element in heap */
1942#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
1943#define UPHEAP_DONE(p,k) ((p) == (k))
1944
1945/* away from the root */
1946inline_speed void
1947downheap (ANHE *heap, int N, int k)
1948{
1949 ANHE he = heap [k];
1950 ANHE *E = heap + N + HEAP0;
1951
1952 for (;;)
1953 {
1954 ev_tstamp minat;
1955 ANHE *minpos;
1956 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
1957
1958 /* find minimum child */
1959 if (expect_true (pos + DHEAP - 1 < E))
1960 {
1961 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1962 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1963 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1964 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1965 }
1966 else if (pos < E)
1967 {
1968 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1969 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1970 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1971 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1972 }
1973 else
1974 break;
1975
1976 if (ANHE_at (he) <= minat)
1977 break;
1978
1979 heap [k] = *minpos;
1980 ev_active (ANHE_w (*minpos)) = k;
1981
1982 k = minpos - heap;
1983 }
1984
1985 heap [k] = he;
1986 ev_active (ANHE_w (he)) = k;
1987}
1988
1989#else /* 4HEAP */
1990
1991#define HEAP0 1
1992#define HPARENT(k) ((k) >> 1)
1993#define UPHEAP_DONE(p,k) (!(p))
1994
1995/* away from the root */
1996inline_speed void
1997downheap (ANHE *heap, int N, int k)
1998{
1999 ANHE he = heap [k];
2000
2001 for (;;)
2002 {
2003 int c = k << 1;
2004
2005 if (c >= N + HEAP0)
2006 break;
2007
2008 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
2009 ? 1 : 0;
2010
2011 if (ANHE_at (he) <= ANHE_at (heap [c]))
2012 break;
2013
2014 heap [k] = heap [c];
2015 ev_active (ANHE_w (heap [k])) = k;
2016
2017 k = c;
2018 }
2019
2020 heap [k] = he;
2021 ev_active (ANHE_w (he)) = k;
2022}
2023#endif
2024
2025/* towards the root */
2026inline_speed void
2027upheap (ANHE *heap, int k)
2028{
2029 ANHE he = heap [k];
2030
2031 for (;;)
2032 {
2033 int p = HPARENT (k);
2034
2035 if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
2036 break;
2037
2038 heap [k] = heap [p];
2039 ev_active (ANHE_w (heap [k])) = k;
2040 k = p;
2041 }
2042
2043 heap [k] = he;
2044 ev_active (ANHE_w (he)) = k;
2045}
2046
2047/* move an element suitably so it is in a correct place */
2048inline_size void
2049adjustheap (ANHE *heap, int N, int k)
2050{
2051 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
2052 upheap (heap, k);
2053 else
2054 downheap (heap, N, k);
2055}
2056
2057/* rebuild the heap: this function is used only once and executed rarely */
2058inline_size void
2059reheap (ANHE *heap, int N)
2060{
2061 int i;
2062
2063 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
2064 /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
2065 for (i = 0; i < N; ++i)
2066 upheap (heap, i + HEAP0);
2067}
2068
2069/*****************************************************************************/
2070
2071/* associate signal watchers to a signal signal */
2072typedef struct
2073{
2074 EV_ATOMIC_T pending;
2075#if EV_MULTIPLICITY
2076 EV_P;
2077#endif
2078 WL head;
2079} ANSIG;
2080
2081static ANSIG signals [EV_NSIG - 1];
2082
2083/*****************************************************************************/
2084
2085#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2086
2087static void noinline ecb_cold
2088evpipe_init (EV_P)
2089{
2090 if (!ev_is_active (&pipe_w))
2091 {
2092 int fds [2];
2093
2094# if EV_USE_EVENTFD
2095 fds [0] = -1;
2096 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
2097 if (fds [1] < 0 && errno == EINVAL)
2098 fds [1] = eventfd (0, 0);
2099
2100 if (fds [1] < 0)
2101# endif
2102 {
2103 while (pipe (fds))
2104 ev_syserr ("(libev) error creating signal/async pipe");
2105
2106 fd_intern (fds [0]);
2107 }
2108
2109 fd_intern (fds [1]);
2110
2111 evpipe [0] = fds [0];
2112
2113 if (evpipe [1] < 0)
2114 evpipe [1] = fds [1]; /* first call, set write fd */
2115 else
2116 {
2117 /* on subsequent calls, do not change evpipe [1] */
2118 /* so that evpipe_write can always rely on its value. */
2119 /* this branch does not do anything sensible on windows, */
2120 /* so must not be executed on windows */
2121
2122 dup2 (fds [1], evpipe [1]);
2123 close (fds [1]);
2124 }
2125
2126 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2127 ev_io_start (EV_A_ &pipe_w);
2128 ev_unref (EV_A); /* watcher should not keep loop alive */
2129 }
2130}
2131
2132inline_speed void
2133evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2134{
2135 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2136
2137 if (expect_true (*flag))
2138 return;
2139
2140 *flag = 1;
2141 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2142
2143 pipe_write_skipped = 1;
2144
2145 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2146
2147 if (pipe_write_wanted)
2148 {
2149 int old_errno;
2150
2151 pipe_write_skipped = 0;
2152 ECB_MEMORY_FENCE_RELEASE;
2153
2154 old_errno = errno; /* save errno because write will clobber it */
2155
2156#if EV_USE_EVENTFD
2157 if (evpipe [0] < 0)
2158 {
2159 uint64_t counter = 1;
2160 write (evpipe [1], &counter, sizeof (uint64_t));
2161 }
2162 else
2163#endif
2164 {
2165#ifdef _WIN32
2166 WSABUF buf;
2167 DWORD sent;
2168 buf.buf = &buf;
2169 buf.len = 1;
2170 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2171#else
2172 write (evpipe [1], &(evpipe [1]), 1);
2173#endif
2174 }
2175
2176 errno = old_errno;
2177 }
2178}
2179
2180/* called whenever the libev signal pipe */
2181/* got some events (signal, async) */
2182static void
2183pipecb (EV_P_ ev_io *iow, int revents)
2184{
2185 int i;
2186
2187 if (revents & EV_READ)
2188 {
2189#if EV_USE_EVENTFD
2190 if (evpipe [0] < 0)
2191 {
2192 uint64_t counter;
2193 read (evpipe [1], &counter, sizeof (uint64_t));
2194 }
2195 else
2196#endif
2197 {
2198 char dummy[4];
2199#ifdef _WIN32
2200 WSABUF buf;
2201 DWORD recvd;
2202 DWORD flags = 0;
2203 buf.buf = dummy;
2204 buf.len = sizeof (dummy);
2205 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2206#else
2207 read (evpipe [0], &dummy, sizeof (dummy));
2208#endif
2209 }
2210 }
2211
2212 pipe_write_skipped = 0;
2213
2214 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2215
2216#if EV_SIGNAL_ENABLE
2217 if (sig_pending)
2218 {
2219 sig_pending = 0;
2220
2221 ECB_MEMORY_FENCE;
2222
2223 for (i = EV_NSIG - 1; i--; )
2224 if (expect_false (signals [i].pending))
2225 ev_feed_signal_event (EV_A_ i + 1);
2226 }
2227#endif
2228
2229#if EV_ASYNC_ENABLE
2230 if (async_pending)
2231 {
2232 async_pending = 0;
2233
2234 ECB_MEMORY_FENCE;
2235
2236 for (i = asynccnt; i--; )
2237 if (asyncs [i]->sent)
2238 {
2239 asyncs [i]->sent = 0;
2240 ECB_MEMORY_FENCE_RELEASE;
2241 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
2242 }
2243 }
2244#endif
2245}
2246
2247/*****************************************************************************/
2248
2249void
2250ev_feed_signal (int signum) EV_THROW
2251{
2252#if EV_MULTIPLICITY
2253 EV_P;
2254 ECB_MEMORY_FENCE_ACQUIRE;
2255 EV_A = signals [signum - 1].loop;
2256
2257 if (!EV_A)
2258 return;
2259#endif
2260
2261 signals [signum - 1].pending = 1;
2262 evpipe_write (EV_A_ &sig_pending);
2263}
2264
2265static void
2266ev_sighandler (int signum)
2267{
2268#ifdef _WIN32
2269 signal (signum, ev_sighandler);
2270#endif
2271
2272 ev_feed_signal (signum);
2273}
2274
2275void noinline
2276ev_feed_signal_event (EV_P_ int signum) EV_THROW
2277{
2278 WL w;
2279
2280 if (expect_false (signum <= 0 || signum >= EV_NSIG))
2281 return;
2282
2283 --signum;
2284
2285#if EV_MULTIPLICITY
2286 /* it is permissible to try to feed a signal to the wrong loop */
2287 /* or, likely more useful, feeding a signal nobody is waiting for */
2288
2289 if (expect_false (signals [signum].loop != EV_A))
2290 return;
2291#endif
2292
2293 signals [signum].pending = 0;
2294 ECB_MEMORY_FENCE_RELEASE;
2295
2296 for (w = signals [signum].head; w; w = w->next)
2297 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
2298}
2299
2300#if EV_USE_SIGNALFD
2301static void
2302sigfdcb (EV_P_ ev_io *iow, int revents)
2303{
2304 struct signalfd_siginfo si[2], *sip; /* these structs are big */
2305
2306 for (;;)
2307 {
2308 ssize_t res = read (sigfd, si, sizeof (si));
2309
2310 /* not ISO-C, as res might be -1, but works with SuS */
2311 for (sip = si; (char *)sip < (char *)si + res; ++sip)
2312 ev_feed_signal_event (EV_A_ sip->ssi_signo);
2313
2314 if (res < (ssize_t)sizeof (si))
2315 break;
2316 }
2317}
2318#endif
2319
2320#endif
2321
2322/*****************************************************************************/
2323
2324#if EV_CHILD_ENABLE
805static WL childs [EV_PID_HASHSIZE]; 2325static WL childs [EV_PID_HASHSIZE];
806 2326
807#ifndef _WIN32
808
809static ev_signal childev; 2327static ev_signal childev;
810 2328
811void inline_speed 2329#ifndef WIFCONTINUED
2330# define WIFCONTINUED(status) 0
2331#endif
2332
2333/* handle a single child status event */
2334inline_speed void
812child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status) 2335child_reap (EV_P_ int chain, int pid, int status)
813{ 2336{
814 ev_child *w; 2337 ev_child *w;
2338 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
815 2339
816 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2340 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
2341 {
817 if (w->pid == pid || !w->pid) 2342 if ((w->pid == pid || !w->pid)
2343 && (!traced || (w->flags & 1)))
818 { 2344 {
819 ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */ 2345 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
820 w->rpid = pid; 2346 w->rpid = pid;
821 w->rstatus = status; 2347 w->rstatus = status;
822 ev_feed_event (EV_A_ (W)w, EV_CHILD); 2348 ev_feed_event (EV_A_ (W)w, EV_CHILD);
823 } 2349 }
2350 }
824} 2351}
825 2352
826#ifndef WCONTINUED 2353#ifndef WCONTINUED
827# define WCONTINUED 0 2354# define WCONTINUED 0
828#endif 2355#endif
829 2356
2357/* called on sigchld etc., calls waitpid */
830static void 2358static void
831childcb (EV_P_ ev_signal *sw, int revents) 2359childcb (EV_P_ ev_signal *sw, int revents)
832{ 2360{
833 int pid, status; 2361 int pid, status;
834 2362
… …
837 if (!WCONTINUED 2365 if (!WCONTINUED
838 || errno != EINVAL 2366 || errno != EINVAL
839 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED))) 2367 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
840 return; 2368 return;
841 2369
842 /* make sure we are called again until all childs have been reaped */ 2370 /* make sure we are called again until all children have been reaped */
843 /* we need to do it this way so that the callback gets called before we continue */ 2371 /* we need to do it this way so that the callback gets called before we continue */
844 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2372 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
845 2373
846 child_reap (EV_A_ sw, pid, pid, status); 2374 child_reap (EV_A_ pid, pid, status);
847 if (EV_PID_HASHSIZE > 1) 2375 if ((EV_PID_HASHSIZE) > 1)
848 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2376 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
849} 2377}
850 2378
851#endif 2379#endif
852 2380
853/*****************************************************************************/ 2381/*****************************************************************************/
854 2382
2383#if EV_USE_IOCP
2384# include "ev_iocp.c"
2385#endif
855#if EV_USE_PORT 2386#if EV_USE_PORT
856# include "ev_port.c" 2387# include "ev_port.c"
857#endif 2388#endif
858#if EV_USE_KQUEUE 2389#if EV_USE_KQUEUE
859# include "ev_kqueue.c" 2390# include "ev_kqueue.c"
… …
866#endif 2397#endif
867#if EV_USE_SELECT 2398#if EV_USE_SELECT
868# include "ev_select.c" 2399# include "ev_select.c"
869#endif 2400#endif
870 2401
871int 2402int ecb_cold
872ev_version_major (void) 2403ev_version_major (void) EV_THROW
873{ 2404{
874 return EV_VERSION_MAJOR; 2405 return EV_VERSION_MAJOR;
875} 2406}
876 2407
877int 2408int ecb_cold
878ev_version_minor (void) 2409ev_version_minor (void) EV_THROW
879{ 2410{
880 return EV_VERSION_MINOR; 2411 return EV_VERSION_MINOR;
881} 2412}
882 2413
883/* return true if we are running with elevated privileges and should ignore env variables */ 2414/* return true if we are running with elevated privileges and should ignore env variables */
884int inline_size 2415int inline_size ecb_cold
885enable_secure (void) 2416enable_secure (void)
886{ 2417{
887#ifdef _WIN32 2418#ifdef _WIN32
888 return 0; 2419 return 0;
889#else 2420#else
890 return getuid () != geteuid () 2421 return getuid () != geteuid ()
891 || getgid () != getegid (); 2422 || getgid () != getegid ();
892#endif 2423#endif
893} 2424}
894 2425
895unsigned int 2426unsigned int ecb_cold
896ev_supported_backends (void) 2427ev_supported_backends (void) EV_THROW
897{ 2428{
898 unsigned int flags = 0; 2429 unsigned int flags = 0;
899 2430
900 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2431 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
901 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2432 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
904 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2435 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
905 2436
906 return flags; 2437 return flags;
907} 2438}
908 2439
909unsigned int 2440unsigned int ecb_cold
910ev_recommended_backends (void) 2441ev_recommended_backends (void) EV_THROW
911{ 2442{
912 unsigned int flags = ev_supported_backends (); 2443 unsigned int flags = ev_supported_backends ();
913 2444
914#ifndef __NetBSD__ 2445#ifndef __NetBSD__
915 /* kqueue is borked on everything but netbsd apparently */ 2446 /* kqueue is borked on everything but netbsd apparently */
916 /* it usually doesn't work correctly on anything but sockets and pipes */ 2447 /* it usually doesn't work correctly on anything but sockets and pipes */
917 flags &= ~EVBACKEND_KQUEUE; 2448 flags &= ~EVBACKEND_KQUEUE;
918#endif 2449#endif
919#ifdef __APPLE__ 2450#ifdef __APPLE__
920 // flags &= ~EVBACKEND_KQUEUE; for documentation 2451 /* only select works correctly on that "unix-certified" platform */
921 flags &= ~EVBACKEND_POLL; 2452 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
2453 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
2454#endif
2455#ifdef __FreeBSD__
2456 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
922#endif 2457#endif
923 2458
924 return flags; 2459 return flags;
925} 2460}
926 2461
2462unsigned int ecb_cold
2463ev_embeddable_backends (void) EV_THROW
2464{
2465 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2466
2467 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2468 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2469 flags &= ~EVBACKEND_EPOLL;
2470
2471 return flags;
2472}
2473
927unsigned int 2474unsigned int
928ev_embeddable_backends (void) 2475ev_backend (EV_P) EV_THROW
929{ 2476{
930 return EVBACKEND_EPOLL 2477 return backend;
931 | EVBACKEND_KQUEUE
932 | EVBACKEND_PORT;
933} 2478}
934 2479
2480#if EV_FEATURE_API
935unsigned int 2481unsigned int
936ev_backend (EV_P) 2482ev_iteration (EV_P) EV_THROW
937{ 2483{
938 return backend; 2484 return loop_count;
939} 2485}
940 2486
941unsigned int 2487unsigned int
942ev_loop_count (EV_P) 2488ev_depth (EV_P) EV_THROW
943{ 2489{
944 return loop_count; 2490 return loop_depth;
945} 2491}
946 2492
2493void
2494ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
2495{
2496 io_blocktime = interval;
2497}
2498
2499void
2500ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
2501{
2502 timeout_blocktime = interval;
2503}
2504
2505void
2506ev_set_userdata (EV_P_ void *data) EV_THROW
2507{
2508 userdata = data;
2509}
2510
2511void *
2512ev_userdata (EV_P) EV_THROW
2513{
2514 return userdata;
2515}
2516
2517void
2518ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW
2519{
2520 invoke_cb = invoke_pending_cb;
2521}
2522
2523void
2524ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
2525{
2526 release_cb = release;
2527 acquire_cb = acquire;
2528}
2529#endif
2530
2531/* initialise a loop structure, must be zero-initialised */
947static void noinline 2532static void noinline ecb_cold
948loop_init (EV_P_ unsigned int flags) 2533loop_init (EV_P_ unsigned int flags) EV_THROW
949{ 2534{
950 if (!backend) 2535 if (!backend)
951 { 2536 {
2537 origflags = flags;
2538
2539#if EV_USE_REALTIME
2540 if (!have_realtime)
2541 {
2542 struct timespec ts;
2543
2544 if (!clock_gettime (CLOCK_REALTIME, &ts))
2545 have_realtime = 1;
2546 }
2547#endif
2548
952#if EV_USE_MONOTONIC 2549#if EV_USE_MONOTONIC
2550 if (!have_monotonic)
953 { 2551 {
954 struct timespec ts; 2552 struct timespec ts;
2553
955 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 2554 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
956 have_monotonic = 1; 2555 have_monotonic = 1;
957 } 2556 }
958#endif 2557#endif
959
960 ev_rt_now = ev_time ();
961 mn_now = get_clock ();
962 now_floor = mn_now;
963 rtmn_diff = ev_rt_now - mn_now;
964 2558
965 /* pid check not overridable via env */ 2559 /* pid check not overridable via env */
966#ifndef _WIN32 2560#ifndef _WIN32
967 if (flags & EVFLAG_FORKCHECK) 2561 if (flags & EVFLAG_FORKCHECK)
968 curpid = getpid (); 2562 curpid = getpid ();
… …
971 if (!(flags & EVFLAG_NOENV) 2565 if (!(flags & EVFLAG_NOENV)
972 && !enable_secure () 2566 && !enable_secure ()
973 && getenv ("LIBEV_FLAGS")) 2567 && getenv ("LIBEV_FLAGS"))
974 flags = atoi (getenv ("LIBEV_FLAGS")); 2568 flags = atoi (getenv ("LIBEV_FLAGS"));
975 2569
976 if (!(flags & 0x0000ffffUL)) 2570 ev_rt_now = ev_time ();
2571 mn_now = get_clock ();
2572 now_floor = mn_now;
2573 rtmn_diff = ev_rt_now - mn_now;
2574#if EV_FEATURE_API
2575 invoke_cb = ev_invoke_pending;
2576#endif
2577
2578 io_blocktime = 0.;
2579 timeout_blocktime = 0.;
2580 backend = 0;
2581 backend_fd = -1;
2582 sig_pending = 0;
2583#if EV_ASYNC_ENABLE
2584 async_pending = 0;
2585#endif
2586 pipe_write_skipped = 0;
2587 pipe_write_wanted = 0;
2588 evpipe [0] = -1;
2589 evpipe [1] = -1;
2590#if EV_USE_INOTIFY
2591 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2592#endif
2593#if EV_USE_SIGNALFD
2594 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
2595#endif
2596
2597 if (!(flags & EVBACKEND_MASK))
977 flags |= ev_recommended_backends (); 2598 flags |= ev_recommended_backends ();
978 2599
979 backend = 0;
980 backend_fd = -1;
981#if EV_USE_INOTIFY 2600#if EV_USE_IOCP
982 fs_fd = -2; 2601 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
983#endif 2602#endif
984
985#if EV_USE_PORT 2603#if EV_USE_PORT
986 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2604 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
987#endif 2605#endif
988#if EV_USE_KQUEUE 2606#if EV_USE_KQUEUE
989 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2607 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
996#endif 2614#endif
997#if EV_USE_SELECT 2615#if EV_USE_SELECT
998 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2616 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
999#endif 2617#endif
1000 2618
2619 ev_prepare_init (&pending_w, pendingcb);
2620
2621#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1001 ev_init (&sigev, sigcb); 2622 ev_init (&pipe_w, pipecb);
1002 ev_set_priority (&sigev, EV_MAXPRI); 2623 ev_set_priority (&pipe_w, EV_MAXPRI);
2624#endif
1003 } 2625 }
1004} 2626}
1005 2627
1006static void noinline 2628/* free up a loop structure */
2629void ecb_cold
1007loop_destroy (EV_P) 2630ev_loop_destroy (EV_P)
1008{ 2631{
1009 int i; 2632 int i;
2633
2634#if EV_MULTIPLICITY
2635 /* mimic free (0) */
2636 if (!EV_A)
2637 return;
2638#endif
2639
2640#if EV_CLEANUP_ENABLE
2641 /* queue cleanup watchers (and execute them) */
2642 if (expect_false (cleanupcnt))
2643 {
2644 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2645 EV_INVOKE_PENDING;
2646 }
2647#endif
2648
2649#if EV_CHILD_ENABLE
2650 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2651 {
2652 ev_ref (EV_A); /* child watcher */
2653 ev_signal_stop (EV_A_ &childev);
2654 }
2655#endif
2656
2657 if (ev_is_active (&pipe_w))
2658 {
2659 /*ev_ref (EV_A);*/
2660 /*ev_io_stop (EV_A_ &pipe_w);*/
2661
2662 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
2663 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
2664 }
2665
2666#if EV_USE_SIGNALFD
2667 if (ev_is_active (&sigfd_w))
2668 close (sigfd);
2669#endif
1010 2670
1011#if EV_USE_INOTIFY 2671#if EV_USE_INOTIFY
1012 if (fs_fd >= 0) 2672 if (fs_fd >= 0)
1013 close (fs_fd); 2673 close (fs_fd);
1014#endif 2674#endif
1015 2675
1016 if (backend_fd >= 0) 2676 if (backend_fd >= 0)
1017 close (backend_fd); 2677 close (backend_fd);
1018 2678
2679#if EV_USE_IOCP
2680 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2681#endif
1019#if EV_USE_PORT 2682#if EV_USE_PORT
1020 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2683 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1021#endif 2684#endif
1022#if EV_USE_KQUEUE 2685#if EV_USE_KQUEUE
1023 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2686 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1038#if EV_IDLE_ENABLE 2701#if EV_IDLE_ENABLE
1039 array_free (idle, [i]); 2702 array_free (idle, [i]);
1040#endif 2703#endif
1041 } 2704 }
1042 2705
1043 ev_free (anfds); anfdmax = 0; 2706 ev_free (anfds); anfds = 0; anfdmax = 0;
1044 2707
1045 /* have to use the microsoft-never-gets-it-right macro */ 2708 /* have to use the microsoft-never-gets-it-right macro */
2709 array_free (rfeed, EMPTY);
1046 array_free (fdchange, EMPTY); 2710 array_free (fdchange, EMPTY);
1047 array_free (timer, EMPTY); 2711 array_free (timer, EMPTY);
1048#if EV_PERIODIC_ENABLE 2712#if EV_PERIODIC_ENABLE
1049 array_free (periodic, EMPTY); 2713 array_free (periodic, EMPTY);
1050#endif 2714#endif
1051#if EV_FORK_ENABLE 2715#if EV_FORK_ENABLE
1052 array_free (fork, EMPTY); 2716 array_free (fork, EMPTY);
1053#endif 2717#endif
2718#if EV_CLEANUP_ENABLE
2719 array_free (cleanup, EMPTY);
2720#endif
1054 array_free (prepare, EMPTY); 2721 array_free (prepare, EMPTY);
1055 array_free (check, EMPTY); 2722 array_free (check, EMPTY);
2723#if EV_ASYNC_ENABLE
2724 array_free (async, EMPTY);
2725#endif
1056 2726
1057 backend = 0; 2727 backend = 0;
1058}
1059 2728
2729#if EV_MULTIPLICITY
2730 if (ev_is_default_loop (EV_A))
2731#endif
2732 ev_default_loop_ptr = 0;
2733#if EV_MULTIPLICITY
2734 else
2735 ev_free (EV_A);
2736#endif
2737}
2738
2739#if EV_USE_INOTIFY
1060void inline_size infy_fork (EV_P); 2740inline_size void infy_fork (EV_P);
2741#endif
1061 2742
1062void inline_size 2743inline_size void
1063loop_fork (EV_P) 2744loop_fork (EV_P)
1064{ 2745{
1065#if EV_USE_PORT 2746#if EV_USE_PORT
1066 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 2747 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1067#endif 2748#endif
… …
1073#endif 2754#endif
1074#if EV_USE_INOTIFY 2755#if EV_USE_INOTIFY
1075 infy_fork (EV_A); 2756 infy_fork (EV_A);
1076#endif 2757#endif
1077 2758
2759#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1078 if (ev_is_active (&sigev)) 2760 if (ev_is_active (&pipe_w))
1079 { 2761 {
1080 /* default loop */ 2762 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1081 2763
1082 ev_ref (EV_A); 2764 ev_ref (EV_A);
1083 ev_io_stop (EV_A_ &sigev); 2765 ev_io_stop (EV_A_ &pipe_w);
1084 close (sigpipe [0]);
1085 close (sigpipe [1]);
1086 2766
1087 while (pipe (sigpipe)) 2767 if (evpipe [0] >= 0)
1088 syserr ("(libev) error creating pipe"); 2768 EV_WIN32_CLOSE_FD (evpipe [0]);
1089 2769
1090 siginit (EV_A); 2770 evpipe_init (EV_A);
2771 /* iterate over everything, in case we missed something before */
2772 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1091 } 2773 }
2774#endif
1092 2775
1093 postfork = 0; 2776 postfork = 0;
1094} 2777}
1095 2778
1096#if EV_MULTIPLICITY 2779#if EV_MULTIPLICITY
2780
1097struct ev_loop * 2781struct ev_loop * ecb_cold
1098ev_loop_new (unsigned int flags) 2782ev_loop_new (unsigned int flags) EV_THROW
1099{ 2783{
1100 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2784 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1101 2785
1102 memset (loop, 0, sizeof (struct ev_loop)); 2786 memset (EV_A, 0, sizeof (struct ev_loop));
1103
1104 loop_init (EV_A_ flags); 2787 loop_init (EV_A_ flags);
1105 2788
1106 if (ev_backend (EV_A)) 2789 if (ev_backend (EV_A))
1107 return loop; 2790 return EV_A;
1108 2791
2792 ev_free (EV_A);
1109 return 0; 2793 return 0;
1110} 2794}
1111 2795
1112void 2796#endif /* multiplicity */
1113ev_loop_destroy (EV_P)
1114{
1115 loop_destroy (EV_A);
1116 ev_free (loop);
1117}
1118 2797
1119void 2798#if EV_VERIFY
1120ev_loop_fork (EV_P) 2799static void noinline ecb_cold
2800verify_watcher (EV_P_ W w)
1121{ 2801{
1122 postfork = 1; 2802 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1123}
1124 2803
2804 if (w->pending)
2805 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
2806}
2807
2808static void noinline ecb_cold
2809verify_heap (EV_P_ ANHE *heap, int N)
2810{
2811 int i;
2812
2813 for (i = HEAP0; i < N + HEAP0; ++i)
2814 {
2815 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
2816 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
2817 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
2818
2819 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2820 }
2821}
2822
2823static void noinline ecb_cold
2824array_verify (EV_P_ W *ws, int cnt)
2825{
2826 while (cnt--)
2827 {
2828 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
2829 verify_watcher (EV_A_ ws [cnt]);
2830 }
2831}
2832#endif
2833
2834#if EV_FEATURE_API
2835void ecb_cold
2836ev_verify (EV_P) EV_THROW
2837{
2838#if EV_VERIFY
2839 int i;
2840 WL w, w2;
2841
2842 assert (activecnt >= -1);
2843
2844 assert (fdchangemax >= fdchangecnt);
2845 for (i = 0; i < fdchangecnt; ++i)
2846 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
2847
2848 assert (anfdmax >= 0);
2849 for (i = 0; i < anfdmax; ++i)
2850 {
2851 int j = 0;
2852
2853 for (w = w2 = anfds [i].head; w; w = w->next)
2854 {
2855 verify_watcher (EV_A_ (W)w);
2856
2857 if (j++ & 1)
2858 {
2859 assert (("libev: io watcher list contains a loop", w != w2));
2860 w2 = w2->next;
2861 }
2862
2863 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
2864 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
2865 }
2866 }
2867
2868 assert (timermax >= timercnt);
2869 verify_heap (EV_A_ timers, timercnt);
2870
2871#if EV_PERIODIC_ENABLE
2872 assert (periodicmax >= periodiccnt);
2873 verify_heap (EV_A_ periodics, periodiccnt);
2874#endif
2875
2876 for (i = NUMPRI; i--; )
2877 {
2878 assert (pendingmax [i] >= pendingcnt [i]);
2879#if EV_IDLE_ENABLE
2880 assert (idleall >= 0);
2881 assert (idlemax [i] >= idlecnt [i]);
2882 array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
2883#endif
2884 }
2885
2886#if EV_FORK_ENABLE
2887 assert (forkmax >= forkcnt);
2888 array_verify (EV_A_ (W *)forks, forkcnt);
2889#endif
2890
2891#if EV_CLEANUP_ENABLE
2892 assert (cleanupmax >= cleanupcnt);
2893 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2894#endif
2895
2896#if EV_ASYNC_ENABLE
2897 assert (asyncmax >= asynccnt);
2898 array_verify (EV_A_ (W *)asyncs, asynccnt);
2899#endif
2900
2901#if EV_PREPARE_ENABLE
2902 assert (preparemax >= preparecnt);
2903 array_verify (EV_A_ (W *)prepares, preparecnt);
2904#endif
2905
2906#if EV_CHECK_ENABLE
2907 assert (checkmax >= checkcnt);
2908 array_verify (EV_A_ (W *)checks, checkcnt);
2909#endif
2910
2911# if 0
2912#if EV_CHILD_ENABLE
2913 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
2914 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2915#endif
2916# endif
2917#endif
2918}
1125#endif 2919#endif
1126 2920
1127#if EV_MULTIPLICITY 2921#if EV_MULTIPLICITY
1128struct ev_loop * 2922struct ev_loop * ecb_cold
1129ev_default_loop_init (unsigned int flags)
1130#else 2923#else
1131int 2924int
2925#endif
1132ev_default_loop (unsigned int flags) 2926ev_default_loop (unsigned int flags) EV_THROW
1133#endif
1134{ 2927{
1135 if (sigpipe [0] == sigpipe [1])
1136 if (pipe (sigpipe))
1137 return 0;
1138
1139 if (!ev_default_loop_ptr) 2928 if (!ev_default_loop_ptr)
1140 { 2929 {
1141#if EV_MULTIPLICITY 2930#if EV_MULTIPLICITY
1142 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2931 EV_P = ev_default_loop_ptr = &default_loop_struct;
1143#else 2932#else
1144 ev_default_loop_ptr = 1; 2933 ev_default_loop_ptr = 1;
1145#endif 2934#endif
1146 2935
1147 loop_init (EV_A_ flags); 2936 loop_init (EV_A_ flags);
1148 2937
1149 if (ev_backend (EV_A)) 2938 if (ev_backend (EV_A))
1150 { 2939 {
1151 siginit (EV_A); 2940#if EV_CHILD_ENABLE
1152
1153#ifndef _WIN32
1154 ev_signal_init (&childev, childcb, SIGCHLD); 2941 ev_signal_init (&childev, childcb, SIGCHLD);
1155 ev_set_priority (&childev, EV_MAXPRI); 2942 ev_set_priority (&childev, EV_MAXPRI);
1156 ev_signal_start (EV_A_ &childev); 2943 ev_signal_start (EV_A_ &childev);
1157 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2944 ev_unref (EV_A); /* child watcher should not keep loop alive */
1158#endif 2945#endif
… …
1163 2950
1164 return ev_default_loop_ptr; 2951 return ev_default_loop_ptr;
1165} 2952}
1166 2953
1167void 2954void
1168ev_default_destroy (void) 2955ev_loop_fork (EV_P) EV_THROW
1169{ 2956{
1170#if EV_MULTIPLICITY
1171 struct ev_loop *loop = ev_default_loop_ptr;
1172#endif
1173
1174#ifndef _WIN32
1175 ev_ref (EV_A); /* child watcher */
1176 ev_signal_stop (EV_A_ &childev);
1177#endif
1178
1179 ev_ref (EV_A); /* signal watcher */
1180 ev_io_stop (EV_A_ &sigev);
1181
1182 close (sigpipe [0]); sigpipe [0] = 0;
1183 close (sigpipe [1]); sigpipe [1] = 0;
1184
1185 loop_destroy (EV_A);
1186}
1187
1188void
1189ev_default_fork (void)
1190{
1191#if EV_MULTIPLICITY
1192 struct ev_loop *loop = ev_default_loop_ptr;
1193#endif
1194
1195 if (backend)
1196 postfork = 1; 2957 postfork = 1;
1197} 2958}
1198 2959
1199/*****************************************************************************/ 2960/*****************************************************************************/
1200 2961
1201void 2962void
1202ev_invoke (EV_P_ void *w, int revents) 2963ev_invoke (EV_P_ void *w, int revents)
1203{ 2964{
1204 EV_CB_INVOKE ((W)w, revents); 2965 EV_CB_INVOKE ((W)w, revents);
1205} 2966}
1206 2967
1207void inline_speed 2968unsigned int
1208call_pending (EV_P) 2969ev_pending_count (EV_P) EV_THROW
1209{ 2970{
1210 int pri; 2971 int pri;
2972 unsigned int count = 0;
1211 2973
1212 for (pri = NUMPRI; pri--; ) 2974 for (pri = NUMPRI; pri--; )
2975 count += pendingcnt [pri];
2976
2977 return count;
2978}
2979
2980void noinline
2981ev_invoke_pending (EV_P)
2982{
2983 pendingpri = NUMPRI;
2984
2985 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */
2986 {
2987 --pendingpri;
2988
1213 while (pendingcnt [pri]) 2989 while (pendingcnt [pendingpri])
1214 {
1215 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1216
1217 if (expect_true (p->w))
1218 {
1219 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1220
1221 p->w->pending = 0;
1222 EV_CB_INVOKE (p->w, p->events);
1223 }
1224 }
1225}
1226
1227void inline_size
1228timers_reify (EV_P)
1229{
1230 while (timercnt && ((WT)timers [0])->at <= mn_now)
1231 {
1232 ev_timer *w = (ev_timer *)timers [0];
1233
1234 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1235
1236 /* first reschedule or stop timer */
1237 if (w->repeat)
1238 { 2990 {
1239 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 2991 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
1240 2992
1241 ((WT)w)->at += w->repeat; 2993 p->w->pending = 0;
1242 if (((WT)w)->at < mn_now) 2994 EV_CB_INVOKE (p->w, p->events);
1243 ((WT)w)->at = mn_now; 2995 EV_FREQUENT_CHECK;
1244
1245 downheap (timers, timercnt, 0);
1246 } 2996 }
1247 else
1248 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1249
1250 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1251 }
1252}
1253
1254#if EV_PERIODIC_ENABLE
1255void inline_size
1256periodics_reify (EV_P)
1257{
1258 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1259 { 2997 }
1260 ev_periodic *w = (ev_periodic *)periodics [0];
1261
1262 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1263
1264 /* first reschedule or stop timer */
1265 if (w->reschedule_cb)
1266 {
1267 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1268 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1269 downheap (periodics, periodiccnt, 0);
1270 }
1271 else if (w->interval)
1272 {
1273 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1274 if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1275 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1276 downheap (periodics, periodiccnt, 0);
1277 }
1278 else
1279 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1280
1281 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1282 }
1283} 2998}
1284
1285static void noinline
1286periodics_reschedule (EV_P)
1287{
1288 int i;
1289
1290 /* adjust periodics after time jump */
1291 for (i = 0; i < periodiccnt; ++i)
1292 {
1293 ev_periodic *w = (ev_periodic *)periodics [i];
1294
1295 if (w->reschedule_cb)
1296 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1297 else if (w->interval)
1298 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1299 }
1300
1301 /* now rebuild the heap */
1302 for (i = periodiccnt >> 1; i--; )
1303 downheap (periodics, periodiccnt, i);
1304}
1305#endif
1306 2999
1307#if EV_IDLE_ENABLE 3000#if EV_IDLE_ENABLE
1308void inline_size 3001/* make idle watchers pending. this handles the "call-idle */
3002/* only when higher priorities are idle" logic */
3003inline_size void
1309idle_reify (EV_P) 3004idle_reify (EV_P)
1310{ 3005{
1311 if (expect_false (idleall)) 3006 if (expect_false (idleall))
1312 { 3007 {
1313 int pri; 3008 int pri;
… …
1325 } 3020 }
1326 } 3021 }
1327} 3022}
1328#endif 3023#endif
1329 3024
1330void inline_speed 3025/* make timers pending */
3026inline_size void
3027timers_reify (EV_P)
3028{
3029 EV_FREQUENT_CHECK;
3030
3031 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
3032 {
3033 do
3034 {
3035 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
3036
3037 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
3038
3039 /* first reschedule or stop timer */
3040 if (w->repeat)
3041 {
3042 ev_at (w) += w->repeat;
3043 if (ev_at (w) < mn_now)
3044 ev_at (w) = mn_now;
3045
3046 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
3047
3048 ANHE_at_cache (timers [HEAP0]);
3049 downheap (timers, timercnt, HEAP0);
3050 }
3051 else
3052 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
3053
3054 EV_FREQUENT_CHECK;
3055 feed_reverse (EV_A_ (W)w);
3056 }
3057 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
3058
3059 feed_reverse_done (EV_A_ EV_TIMER);
3060 }
3061}
3062
3063#if EV_PERIODIC_ENABLE
3064
3065static void noinline
3066periodic_recalc (EV_P_ ev_periodic *w)
3067{
3068 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3069 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3070
3071 /* the above almost always errs on the low side */
3072 while (at <= ev_rt_now)
3073 {
3074 ev_tstamp nat = at + w->interval;
3075
3076 /* when resolution fails us, we use ev_rt_now */
3077 if (expect_false (nat == at))
3078 {
3079 at = ev_rt_now;
3080 break;
3081 }
3082
3083 at = nat;
3084 }
3085
3086 ev_at (w) = at;
3087}
3088
3089/* make periodics pending */
3090inline_size void
3091periodics_reify (EV_P)
3092{
3093 EV_FREQUENT_CHECK;
3094
3095 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
3096 {
3097 do
3098 {
3099 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
3100
3101 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
3102
3103 /* first reschedule or stop timer */
3104 if (w->reschedule_cb)
3105 {
3106 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
3107
3108 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
3109
3110 ANHE_at_cache (periodics [HEAP0]);
3111 downheap (periodics, periodiccnt, HEAP0);
3112 }
3113 else if (w->interval)
3114 {
3115 periodic_recalc (EV_A_ w);
3116 ANHE_at_cache (periodics [HEAP0]);
3117 downheap (periodics, periodiccnt, HEAP0);
3118 }
3119 else
3120 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
3121
3122 EV_FREQUENT_CHECK;
3123 feed_reverse (EV_A_ (W)w);
3124 }
3125 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
3126
3127 feed_reverse_done (EV_A_ EV_PERIODIC);
3128 }
3129}
3130
3131/* simply recalculate all periodics */
3132/* TODO: maybe ensure that at least one event happens when jumping forward? */
3133static void noinline ecb_cold
3134periodics_reschedule (EV_P)
3135{
3136 int i;
3137
3138 /* adjust periodics after time jump */
3139 for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
3140 {
3141 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
3142
3143 if (w->reschedule_cb)
3144 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
3145 else if (w->interval)
3146 periodic_recalc (EV_A_ w);
3147
3148 ANHE_at_cache (periodics [i]);
3149 }
3150
3151 reheap (periodics, periodiccnt);
3152}
3153#endif
3154
3155/* adjust all timers by a given offset */
3156static void noinline ecb_cold
3157timers_reschedule (EV_P_ ev_tstamp adjust)
3158{
3159 int i;
3160
3161 for (i = 0; i < timercnt; ++i)
3162 {
3163 ANHE *he = timers + i + HEAP0;
3164 ANHE_w (*he)->at += adjust;
3165 ANHE_at_cache (*he);
3166 }
3167}
3168
3169/* fetch new monotonic and realtime times from the kernel */
3170/* also detect if there was a timejump, and act accordingly */
3171inline_speed void
1331time_update (EV_P_ ev_tstamp max_block) 3172time_update (EV_P_ ev_tstamp max_block)
1332{ 3173{
1333 int i;
1334
1335#if EV_USE_MONOTONIC 3174#if EV_USE_MONOTONIC
1336 if (expect_true (have_monotonic)) 3175 if (expect_true (have_monotonic))
1337 { 3176 {
3177 int i;
1338 ev_tstamp odiff = rtmn_diff; 3178 ev_tstamp odiff = rtmn_diff;
1339 3179
1340 mn_now = get_clock (); 3180 mn_now = get_clock ();
1341 3181
1342 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3182 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1358 * doesn't hurt either as we only do this on time-jumps or 3198 * doesn't hurt either as we only do this on time-jumps or
1359 * in the unlikely event of having been preempted here. 3199 * in the unlikely event of having been preempted here.
1360 */ 3200 */
1361 for (i = 4; --i; ) 3201 for (i = 4; --i; )
1362 { 3202 {
3203 ev_tstamp diff;
1363 rtmn_diff = ev_rt_now - mn_now; 3204 rtmn_diff = ev_rt_now - mn_now;
1364 3205
1365 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 3206 diff = odiff - rtmn_diff;
3207
3208 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
1366 return; /* all is well */ 3209 return; /* all is well */
1367 3210
1368 ev_rt_now = ev_time (); 3211 ev_rt_now = ev_time ();
1369 mn_now = get_clock (); 3212 mn_now = get_clock ();
1370 now_floor = mn_now; 3213 now_floor = mn_now;
1371 } 3214 }
1372 3215
3216 /* no timer adjustment, as the monotonic clock doesn't jump */
3217 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1373# if EV_PERIODIC_ENABLE 3218# if EV_PERIODIC_ENABLE
1374 periodics_reschedule (EV_A); 3219 periodics_reschedule (EV_A);
1375# endif 3220# endif
1376 /* no timer adjustment, as the monotonic clock doesn't jump */
1377 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1378 } 3221 }
1379 else 3222 else
1380#endif 3223#endif
1381 { 3224 {
1382 ev_rt_now = ev_time (); 3225 ev_rt_now = ev_time ();
1383 3226
1384 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 3227 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1385 { 3228 {
3229 /* adjust timers. this is easy, as the offset is the same for all of them */
3230 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1386#if EV_PERIODIC_ENABLE 3231#if EV_PERIODIC_ENABLE
1387 periodics_reschedule (EV_A); 3232 periodics_reschedule (EV_A);
1388#endif 3233#endif
1389 /* adjust timers. this is easy, as the offset is the same for all of them */
1390 for (i = 0; i < timercnt; ++i)
1391 ((WT)timers [i])->at += ev_rt_now - mn_now;
1392 } 3234 }
1393 3235
1394 mn_now = ev_rt_now; 3236 mn_now = ev_rt_now;
1395 } 3237 }
1396} 3238}
1397 3239
1398void 3240int
1399ev_ref (EV_P)
1400{
1401 ++activecnt;
1402}
1403
1404void
1405ev_unref (EV_P)
1406{
1407 --activecnt;
1408}
1409
1410static int loop_done;
1411
1412void
1413ev_loop (EV_P_ int flags) 3241ev_run (EV_P_ int flags)
1414{ 3242{
1415 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) 3243#if EV_FEATURE_API
1416 ? EVUNLOOP_ONE 3244 ++loop_depth;
1417 : EVUNLOOP_CANCEL; 3245#endif
1418 3246
3247 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
3248
3249 loop_done = EVBREAK_CANCEL;
3250
1419 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 3251 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1420 3252
1421 do 3253 do
1422 { 3254 {
3255#if EV_VERIFY >= 2
3256 ev_verify (EV_A);
3257#endif
3258
1423#ifndef _WIN32 3259#ifndef _WIN32
1424 if (expect_false (curpid)) /* penalise the forking check even more */ 3260 if (expect_false (curpid)) /* penalise the forking check even more */
1425 if (expect_false (getpid () != curpid)) 3261 if (expect_false (getpid () != curpid))
1426 { 3262 {
1427 curpid = getpid (); 3263 curpid = getpid ();
… …
1433 /* we might have forked, so queue fork handlers */ 3269 /* we might have forked, so queue fork handlers */
1434 if (expect_false (postfork)) 3270 if (expect_false (postfork))
1435 if (forkcnt) 3271 if (forkcnt)
1436 { 3272 {
1437 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3273 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1438 call_pending (EV_A); 3274 EV_INVOKE_PENDING;
1439 } 3275 }
1440#endif 3276#endif
1441 3277
3278#if EV_PREPARE_ENABLE
1442 /* queue prepare watchers (and execute them) */ 3279 /* queue prepare watchers (and execute them) */
1443 if (expect_false (preparecnt)) 3280 if (expect_false (preparecnt))
1444 { 3281 {
1445 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3282 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1446 call_pending (EV_A); 3283 EV_INVOKE_PENDING;
1447 } 3284 }
3285#endif
1448 3286
1449 if (expect_false (!activecnt)) 3287 if (expect_false (loop_done))
1450 break; 3288 break;
1451 3289
1452 /* we might have forked, so reify kernel state if necessary */ 3290 /* we might have forked, so reify kernel state if necessary */
1453 if (expect_false (postfork)) 3291 if (expect_false (postfork))
1454 loop_fork (EV_A); 3292 loop_fork (EV_A);
… …
1456 /* update fd-related kernel structures */ 3294 /* update fd-related kernel structures */
1457 fd_reify (EV_A); 3295 fd_reify (EV_A);
1458 3296
1459 /* calculate blocking time */ 3297 /* calculate blocking time */
1460 { 3298 {
1461 ev_tstamp block; 3299 ev_tstamp waittime = 0.;
3300 ev_tstamp sleeptime = 0.;
1462 3301
1463 if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt)) 3302 /* remember old timestamp for io_blocktime calculation */
1464 block = 0.; /* do not block at all */ 3303 ev_tstamp prev_mn_now = mn_now;
1465 else 3304
3305 /* update time to cancel out callback processing overhead */
3306 time_update (EV_A_ 1e100);
3307
3308 /* from now on, we want a pipe-wake-up */
3309 pipe_write_wanted = 1;
3310
3311 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3312
3313 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
1466 { 3314 {
1467 /* update time to cancel out callback processing overhead */
1468 time_update (EV_A_ 1e100);
1469
1470 block = MAX_BLOCKTIME; 3315 waittime = MAX_BLOCKTIME;
1471 3316
1472 if (timercnt) 3317 if (timercnt)
1473 { 3318 {
1474 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge; 3319 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
1475 if (block > to) block = to; 3320 if (waittime > to) waittime = to;
1476 } 3321 }
1477 3322
1478#if EV_PERIODIC_ENABLE 3323#if EV_PERIODIC_ENABLE
1479 if (periodiccnt) 3324 if (periodiccnt)
1480 { 3325 {
1481 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge; 3326 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
1482 if (block > to) block = to; 3327 if (waittime > to) waittime = to;
1483 } 3328 }
1484#endif 3329#endif
1485 3330
3331 /* don't let timeouts decrease the waittime below timeout_blocktime */
3332 if (expect_false (waittime < timeout_blocktime))
3333 waittime = timeout_blocktime;
3334
3335 /* at this point, we NEED to wait, so we have to ensure */
3336 /* to pass a minimum nonzero value to the backend */
3337 if (expect_false (waittime < backend_mintime))
3338 waittime = backend_mintime;
3339
3340 /* extra check because io_blocktime is commonly 0 */
1486 if (expect_false (block < 0.)) block = 0.; 3341 if (expect_false (io_blocktime))
3342 {
3343 sleeptime = io_blocktime - (mn_now - prev_mn_now);
3344
3345 if (sleeptime > waittime - backend_mintime)
3346 sleeptime = waittime - backend_mintime;
3347
3348 if (expect_true (sleeptime > 0.))
3349 {
3350 ev_sleep (sleeptime);
3351 waittime -= sleeptime;
3352 }
3353 }
1487 } 3354 }
1488 3355
3356#if EV_FEATURE_API
1489 ++loop_count; 3357 ++loop_count;
3358#endif
3359 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
1490 backend_poll (EV_A_ block); 3360 backend_poll (EV_A_ waittime);
3361 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3362
3363 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3364
3365 ECB_MEMORY_FENCE_ACQUIRE;
3366 if (pipe_write_skipped)
3367 {
3368 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3369 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3370 }
3371
1491 3372
1492 /* update ev_rt_now, do magic */ 3373 /* update ev_rt_now, do magic */
1493 time_update (EV_A_ block); 3374 time_update (EV_A_ waittime + sleeptime);
1494 } 3375 }
1495 3376
1496 /* queue pending timers and reschedule them */ 3377 /* queue pending timers and reschedule them */
1497 timers_reify (EV_A); /* relative timers called last */ 3378 timers_reify (EV_A); /* relative timers called last */
1498#if EV_PERIODIC_ENABLE 3379#if EV_PERIODIC_ENABLE
… …
1502#if EV_IDLE_ENABLE 3383#if EV_IDLE_ENABLE
1503 /* queue idle watchers unless other events are pending */ 3384 /* queue idle watchers unless other events are pending */
1504 idle_reify (EV_A); 3385 idle_reify (EV_A);
1505#endif 3386#endif
1506 3387
3388#if EV_CHECK_ENABLE
1507 /* queue check watchers, to be executed first */ 3389 /* queue check watchers, to be executed first */
1508 if (expect_false (checkcnt)) 3390 if (expect_false (checkcnt))
1509 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3391 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3392#endif
1510 3393
1511 call_pending (EV_A); 3394 EV_INVOKE_PENDING;
1512
1513 } 3395 }
1514 while (expect_true (activecnt && !loop_done)); 3396 while (expect_true (
3397 activecnt
3398 && !loop_done
3399 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
3400 ));
1515 3401
1516 if (loop_done == EVUNLOOP_ONE) 3402 if (loop_done == EVBREAK_ONE)
1517 loop_done = EVUNLOOP_CANCEL; 3403 loop_done = EVBREAK_CANCEL;
3404
3405#if EV_FEATURE_API
3406 --loop_depth;
3407#endif
3408
3409 return activecnt;
1518} 3410}
1519 3411
1520void 3412void
1521ev_unloop (EV_P_ int how) 3413ev_break (EV_P_ int how) EV_THROW
1522{ 3414{
1523 loop_done = how; 3415 loop_done = how;
1524} 3416}
1525 3417
3418void
3419ev_ref (EV_P) EV_THROW
3420{
3421 ++activecnt;
3422}
3423
3424void
3425ev_unref (EV_P) EV_THROW
3426{
3427 --activecnt;
3428}
3429
3430void
3431ev_now_update (EV_P) EV_THROW
3432{
3433 time_update (EV_A_ 1e100);
3434}
3435
3436void
3437ev_suspend (EV_P) EV_THROW
3438{
3439 ev_now_update (EV_A);
3440}
3441
3442void
3443ev_resume (EV_P) EV_THROW
3444{
3445 ev_tstamp mn_prev = mn_now;
3446
3447 ev_now_update (EV_A);
3448 timers_reschedule (EV_A_ mn_now - mn_prev);
3449#if EV_PERIODIC_ENABLE
3450 /* TODO: really do this? */
3451 periodics_reschedule (EV_A);
3452#endif
3453}
3454
1526/*****************************************************************************/ 3455/*****************************************************************************/
3456/* singly-linked list management, used when the expected list length is short */
1527 3457
1528void inline_size 3458inline_size void
1529wlist_add (WL *head, WL elem) 3459wlist_add (WL *head, WL elem)
1530{ 3460{
1531 elem->next = *head; 3461 elem->next = *head;
1532 *head = elem; 3462 *head = elem;
1533} 3463}
1534 3464
1535void inline_size 3465inline_size void
1536wlist_del (WL *head, WL elem) 3466wlist_del (WL *head, WL elem)
1537{ 3467{
1538 while (*head) 3468 while (*head)
1539 { 3469 {
1540 if (*head == elem) 3470 if (expect_true (*head == elem))
1541 { 3471 {
1542 *head = elem->next; 3472 *head = elem->next;
1543 return; 3473 break;
1544 } 3474 }
1545 3475
1546 head = &(*head)->next; 3476 head = &(*head)->next;
1547 } 3477 }
1548} 3478}
1549 3479
1550void inline_speed 3480/* internal, faster, version of ev_clear_pending */
3481inline_speed void
1551clear_pending (EV_P_ W w) 3482clear_pending (EV_P_ W w)
1552{ 3483{
1553 if (w->pending) 3484 if (w->pending)
1554 { 3485 {
1555 pendings [ABSPRI (w)][w->pending - 1].w = 0; 3486 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
1556 w->pending = 0; 3487 w->pending = 0;
1557 } 3488 }
1558} 3489}
1559 3490
1560int 3491int
1561ev_clear_pending (EV_P_ void *w) 3492ev_clear_pending (EV_P_ void *w) EV_THROW
1562{ 3493{
1563 W w_ = (W)w; 3494 W w_ = (W)w;
1564 int pending = w_->pending; 3495 int pending = w_->pending;
1565 3496
1566 if (expect_true (pending)) 3497 if (expect_true (pending))
1567 { 3498 {
1568 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 3499 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
3500 p->w = (W)&pending_w;
1569 w_->pending = 0; 3501 w_->pending = 0;
1570 p->w = 0;
1571 return p->events; 3502 return p->events;
1572 } 3503 }
1573 else 3504 else
1574 return 0; 3505 return 0;
1575} 3506}
1576 3507
1577void inline_size 3508inline_size void
1578pri_adjust (EV_P_ W w) 3509pri_adjust (EV_P_ W w)
1579{ 3510{
1580 int pri = w->priority; 3511 int pri = ev_priority (w);
1581 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 3512 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1582 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 3513 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1583 w->priority = pri; 3514 ev_set_priority (w, pri);
1584} 3515}
1585 3516
1586void inline_speed 3517inline_speed void
1587ev_start (EV_P_ W w, int active) 3518ev_start (EV_P_ W w, int active)
1588{ 3519{
1589 pri_adjust (EV_A_ w); 3520 pri_adjust (EV_A_ w);
1590 w->active = active; 3521 w->active = active;
1591 ev_ref (EV_A); 3522 ev_ref (EV_A);
1592} 3523}
1593 3524
1594void inline_size 3525inline_size void
1595ev_stop (EV_P_ W w) 3526ev_stop (EV_P_ W w)
1596{ 3527{
1597 ev_unref (EV_A); 3528 ev_unref (EV_A);
1598 w->active = 0; 3529 w->active = 0;
1599} 3530}
1600 3531
1601/*****************************************************************************/ 3532/*****************************************************************************/
1602 3533
1603void noinline 3534void noinline
1604ev_io_start (EV_P_ ev_io *w) 3535ev_io_start (EV_P_ ev_io *w) EV_THROW
1605{ 3536{
1606 int fd = w->fd; 3537 int fd = w->fd;
1607 3538
1608 if (expect_false (ev_is_active (w))) 3539 if (expect_false (ev_is_active (w)))
1609 return; 3540 return;
1610 3541
1611 assert (("ev_io_start called with negative fd", fd >= 0)); 3542 assert (("libev: ev_io_start called with negative fd", fd >= 0));
3543 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
3544
3545 EV_FREQUENT_CHECK;
1612 3546
1613 ev_start (EV_A_ (W)w, 1); 3547 ev_start (EV_A_ (W)w, 1);
1614 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 3548 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
1615 wlist_add (&anfds[fd].head, (WL)w); 3549 wlist_add (&anfds[fd].head, (WL)w);
1616 3550
3551 /* common bug, apparently */
3552 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3553
1617 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 3554 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
1618 w->events &= ~EV_IOFDSET; 3555 w->events &= ~EV__IOFDSET;
3556
3557 EV_FREQUENT_CHECK;
1619} 3558}
1620 3559
1621void noinline 3560void noinline
1622ev_io_stop (EV_P_ ev_io *w) 3561ev_io_stop (EV_P_ ev_io *w) EV_THROW
1623{ 3562{
1624 clear_pending (EV_A_ (W)w); 3563 clear_pending (EV_A_ (W)w);
1625 if (expect_false (!ev_is_active (w))) 3564 if (expect_false (!ev_is_active (w)))
1626 return; 3565 return;
1627 3566
1628 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 3567 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
3568
3569 EV_FREQUENT_CHECK;
1629 3570
1630 wlist_del (&anfds[w->fd].head, (WL)w); 3571 wlist_del (&anfds[w->fd].head, (WL)w);
1631 ev_stop (EV_A_ (W)w); 3572 ev_stop (EV_A_ (W)w);
1632 3573
1633 fd_change (EV_A_ w->fd, 1); 3574 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
3575
3576 EV_FREQUENT_CHECK;
1634} 3577}
1635 3578
1636void noinline 3579void noinline
1637ev_timer_start (EV_P_ ev_timer *w) 3580ev_timer_start (EV_P_ ev_timer *w) EV_THROW
1638{ 3581{
1639 if (expect_false (ev_is_active (w))) 3582 if (expect_false (ev_is_active (w)))
1640 return; 3583 return;
1641 3584
1642 ((WT)w)->at += mn_now; 3585 ev_at (w) += mn_now;
1643 3586
1644 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 3587 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1645 3588
3589 EV_FREQUENT_CHECK;
3590
3591 ++timercnt;
1646 ev_start (EV_A_ (W)w, ++timercnt); 3592 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
1647 array_needsize (WT, timers, timermax, timercnt, EMPTY2); 3593 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1648 timers [timercnt - 1] = (WT)w; 3594 ANHE_w (timers [ev_active (w)]) = (WT)w;
1649 upheap (timers, timercnt - 1); 3595 ANHE_at_cache (timers [ev_active (w)]);
3596 upheap (timers, ev_active (w));
1650 3597
3598 EV_FREQUENT_CHECK;
3599
1651 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/ 3600 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
1652} 3601}
1653 3602
1654void noinline 3603void noinline
1655ev_timer_stop (EV_P_ ev_timer *w) 3604ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
1656{ 3605{
1657 clear_pending (EV_A_ (W)w); 3606 clear_pending (EV_A_ (W)w);
1658 if (expect_false (!ev_is_active (w))) 3607 if (expect_false (!ev_is_active (w)))
1659 return; 3608 return;
1660 3609
1661 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w)); 3610 EV_FREQUENT_CHECK;
1662 3611
1663 { 3612 {
1664 int active = ((W)w)->active; 3613 int active = ev_active (w);
1665 3614
3615 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
3616
3617 --timercnt;
3618
1666 if (expect_true (--active < --timercnt)) 3619 if (expect_true (active < timercnt + HEAP0))
1667 { 3620 {
1668 timers [active] = timers [timercnt]; 3621 timers [active] = timers [timercnt + HEAP0];
1669 adjustheap (timers, timercnt, active); 3622 adjustheap (timers, timercnt, active);
1670 } 3623 }
1671 } 3624 }
1672 3625
1673 ((WT)w)->at -= mn_now; 3626 ev_at (w) -= mn_now;
1674 3627
1675 ev_stop (EV_A_ (W)w); 3628 ev_stop (EV_A_ (W)w);
3629
3630 EV_FREQUENT_CHECK;
1676} 3631}
1677 3632
1678void noinline 3633void noinline
1679ev_timer_again (EV_P_ ev_timer *w) 3634ev_timer_again (EV_P_ ev_timer *w) EV_THROW
1680{ 3635{
3636 EV_FREQUENT_CHECK;
3637
3638 clear_pending (EV_A_ (W)w);
3639
1681 if (ev_is_active (w)) 3640 if (ev_is_active (w))
1682 { 3641 {
1683 if (w->repeat) 3642 if (w->repeat)
1684 { 3643 {
1685 ((WT)w)->at = mn_now + w->repeat; 3644 ev_at (w) = mn_now + w->repeat;
3645 ANHE_at_cache (timers [ev_active (w)]);
1686 adjustheap (timers, timercnt, ((W)w)->active - 1); 3646 adjustheap (timers, timercnt, ev_active (w));
1687 } 3647 }
1688 else 3648 else
1689 ev_timer_stop (EV_A_ w); 3649 ev_timer_stop (EV_A_ w);
1690 } 3650 }
1691 else if (w->repeat) 3651 else if (w->repeat)
1692 { 3652 {
1693 w->at = w->repeat; 3653 ev_at (w) = w->repeat;
1694 ev_timer_start (EV_A_ w); 3654 ev_timer_start (EV_A_ w);
1695 } 3655 }
3656
3657 EV_FREQUENT_CHECK;
3658}
3659
3660ev_tstamp
3661ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
3662{
3663 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
1696} 3664}
1697 3665
1698#if EV_PERIODIC_ENABLE 3666#if EV_PERIODIC_ENABLE
1699void noinline 3667void noinline
1700ev_periodic_start (EV_P_ ev_periodic *w) 3668ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
1701{ 3669{
1702 if (expect_false (ev_is_active (w))) 3670 if (expect_false (ev_is_active (w)))
1703 return; 3671 return;
1704 3672
1705 if (w->reschedule_cb) 3673 if (w->reschedule_cb)
1706 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 3674 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1707 else if (w->interval) 3675 else if (w->interval)
1708 { 3676 {
1709 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 3677 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
1710 /* this formula differs from the one in periodic_reify because we do not always round up */ 3678 periodic_recalc (EV_A_ w);
1711 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1712 } 3679 }
1713 else 3680 else
1714 ((WT)w)->at = w->offset; 3681 ev_at (w) = w->offset;
1715 3682
3683 EV_FREQUENT_CHECK;
3684
3685 ++periodiccnt;
1716 ev_start (EV_A_ (W)w, ++periodiccnt); 3686 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
1717 array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2); 3687 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
1718 periodics [periodiccnt - 1] = (WT)w; 3688 ANHE_w (periodics [ev_active (w)]) = (WT)w;
1719 upheap (periodics, periodiccnt - 1); 3689 ANHE_at_cache (periodics [ev_active (w)]);
3690 upheap (periodics, ev_active (w));
1720 3691
3692 EV_FREQUENT_CHECK;
3693
1721 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/ 3694 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
1722} 3695}
1723 3696
1724void noinline 3697void noinline
1725ev_periodic_stop (EV_P_ ev_periodic *w) 3698ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
1726{ 3699{
1727 clear_pending (EV_A_ (W)w); 3700 clear_pending (EV_A_ (W)w);
1728 if (expect_false (!ev_is_active (w))) 3701 if (expect_false (!ev_is_active (w)))
1729 return; 3702 return;
1730 3703
1731 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w)); 3704 EV_FREQUENT_CHECK;
1732 3705
1733 { 3706 {
1734 int active = ((W)w)->active; 3707 int active = ev_active (w);
1735 3708
3709 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
3710
3711 --periodiccnt;
3712
1736 if (expect_true (--active < --periodiccnt)) 3713 if (expect_true (active < periodiccnt + HEAP0))
1737 { 3714 {
1738 periodics [active] = periodics [periodiccnt]; 3715 periodics [active] = periodics [periodiccnt + HEAP0];
1739 adjustheap (periodics, periodiccnt, active); 3716 adjustheap (periodics, periodiccnt, active);
1740 } 3717 }
1741 } 3718 }
1742 3719
1743 ev_stop (EV_A_ (W)w); 3720 ev_stop (EV_A_ (W)w);
3721
3722 EV_FREQUENT_CHECK;
1744} 3723}
1745 3724
1746void noinline 3725void noinline
1747ev_periodic_again (EV_P_ ev_periodic *w) 3726ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
1748{ 3727{
1749 /* TODO: use adjustheap and recalculation */ 3728 /* TODO: use adjustheap and recalculation */
1750 ev_periodic_stop (EV_A_ w); 3729 ev_periodic_stop (EV_A_ w);
1751 ev_periodic_start (EV_A_ w); 3730 ev_periodic_start (EV_A_ w);
1752} 3731}
… …
1754 3733
1755#ifndef SA_RESTART 3734#ifndef SA_RESTART
1756# define SA_RESTART 0 3735# define SA_RESTART 0
1757#endif 3736#endif
1758 3737
3738#if EV_SIGNAL_ENABLE
3739
1759void noinline 3740void noinline
1760ev_signal_start (EV_P_ ev_signal *w) 3741ev_signal_start (EV_P_ ev_signal *w) EV_THROW
1761{ 3742{
1762#if EV_MULTIPLICITY
1763 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1764#endif
1765 if (expect_false (ev_is_active (w))) 3743 if (expect_false (ev_is_active (w)))
1766 return; 3744 return;
1767 3745
1768 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 3746 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
1769 3747
3748#if EV_MULTIPLICITY
3749 assert (("libev: a signal must not be attached to two different loops",
3750 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
3751
3752 signals [w->signum - 1].loop = EV_A;
3753 ECB_MEMORY_FENCE_RELEASE;
3754#endif
3755
3756 EV_FREQUENT_CHECK;
3757
3758#if EV_USE_SIGNALFD
3759 if (sigfd == -2)
1770 { 3760 {
1771#ifndef _WIN32 3761 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
1772 sigset_t full, prev; 3762 if (sigfd < 0 && errno == EINVAL)
1773 sigfillset (&full); 3763 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
1774 sigprocmask (SIG_SETMASK, &full, &prev);
1775#endif
1776 3764
1777 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 3765 if (sigfd >= 0)
3766 {
3767 fd_intern (sigfd); /* doing it twice will not hurt */
1778 3768
1779#ifndef _WIN32 3769 sigemptyset (&sigfd_set);
1780 sigprocmask (SIG_SETMASK, &prev, 0); 3770
1781#endif 3771 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
3772 ev_set_priority (&sigfd_w, EV_MAXPRI);
3773 ev_io_start (EV_A_ &sigfd_w);
3774 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
3775 }
1782 } 3776 }
3777
3778 if (sigfd >= 0)
3779 {
3780 /* TODO: check .head */
3781 sigaddset (&sigfd_set, w->signum);
3782 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
3783
3784 signalfd (sigfd, &sigfd_set, 0);
3785 }
3786#endif
1783 3787
1784 ev_start (EV_A_ (W)w, 1); 3788 ev_start (EV_A_ (W)w, 1);
1785 wlist_add (&signals [w->signum - 1].head, (WL)w); 3789 wlist_add (&signals [w->signum - 1].head, (WL)w);
1786 3790
1787 if (!((WL)w)->next) 3791 if (!((WL)w)->next)
3792# if EV_USE_SIGNALFD
3793 if (sigfd < 0) /*TODO*/
3794# endif
1788 { 3795 {
1789#if _WIN32 3796# ifdef _WIN32
3797 evpipe_init (EV_A);
3798
1790 signal (w->signum, sighandler); 3799 signal (w->signum, ev_sighandler);
1791#else 3800# else
1792 struct sigaction sa; 3801 struct sigaction sa;
3802
3803 evpipe_init (EV_A);
3804
1793 sa.sa_handler = sighandler; 3805 sa.sa_handler = ev_sighandler;
1794 sigfillset (&sa.sa_mask); 3806 sigfillset (&sa.sa_mask);
1795 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3807 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1796 sigaction (w->signum, &sa, 0); 3808 sigaction (w->signum, &sa, 0);
3809
3810 if (origflags & EVFLAG_NOSIGMASK)
3811 {
3812 sigemptyset (&sa.sa_mask);
3813 sigaddset (&sa.sa_mask, w->signum);
3814 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3815 }
1797#endif 3816#endif
1798 } 3817 }
3818
3819 EV_FREQUENT_CHECK;
1799} 3820}
1800 3821
1801void noinline 3822void noinline
1802ev_signal_stop (EV_P_ ev_signal *w) 3823ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
1803{ 3824{
1804 clear_pending (EV_A_ (W)w); 3825 clear_pending (EV_A_ (W)w);
1805 if (expect_false (!ev_is_active (w))) 3826 if (expect_false (!ev_is_active (w)))
1806 return; 3827 return;
1807 3828
3829 EV_FREQUENT_CHECK;
3830
1808 wlist_del (&signals [w->signum - 1].head, (WL)w); 3831 wlist_del (&signals [w->signum - 1].head, (WL)w);
1809 ev_stop (EV_A_ (W)w); 3832 ev_stop (EV_A_ (W)w);
1810 3833
1811 if (!signals [w->signum - 1].head) 3834 if (!signals [w->signum - 1].head)
3835 {
3836#if EV_MULTIPLICITY
3837 signals [w->signum - 1].loop = 0; /* unattach from signal */
3838#endif
3839#if EV_USE_SIGNALFD
3840 if (sigfd >= 0)
3841 {
3842 sigset_t ss;
3843
3844 sigemptyset (&ss);
3845 sigaddset (&ss, w->signum);
3846 sigdelset (&sigfd_set, w->signum);
3847
3848 signalfd (sigfd, &sigfd_set, 0);
3849 sigprocmask (SIG_UNBLOCK, &ss, 0);
3850 }
3851 else
3852#endif
1812 signal (w->signum, SIG_DFL); 3853 signal (w->signum, SIG_DFL);
3854 }
3855
3856 EV_FREQUENT_CHECK;
1813} 3857}
3858
3859#endif
3860
3861#if EV_CHILD_ENABLE
1814 3862
1815void 3863void
1816ev_child_start (EV_P_ ev_child *w) 3864ev_child_start (EV_P_ ev_child *w) EV_THROW
1817{ 3865{
1818#if EV_MULTIPLICITY 3866#if EV_MULTIPLICITY
1819 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3867 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1820#endif 3868#endif
1821 if (expect_false (ev_is_active (w))) 3869 if (expect_false (ev_is_active (w)))
1822 return; 3870 return;
1823 3871
3872 EV_FREQUENT_CHECK;
3873
1824 ev_start (EV_A_ (W)w, 1); 3874 ev_start (EV_A_ (W)w, 1);
1825 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3875 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
3876
3877 EV_FREQUENT_CHECK;
1826} 3878}
1827 3879
1828void 3880void
1829ev_child_stop (EV_P_ ev_child *w) 3881ev_child_stop (EV_P_ ev_child *w) EV_THROW
1830{ 3882{
1831 clear_pending (EV_A_ (W)w); 3883 clear_pending (EV_A_ (W)w);
1832 if (expect_false (!ev_is_active (w))) 3884 if (expect_false (!ev_is_active (w)))
1833 return; 3885 return;
1834 3886
3887 EV_FREQUENT_CHECK;
3888
1835 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3889 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
1836 ev_stop (EV_A_ (W)w); 3890 ev_stop (EV_A_ (W)w);
3891
3892 EV_FREQUENT_CHECK;
1837} 3893}
3894
3895#endif
1838 3896
1839#if EV_STAT_ENABLE 3897#if EV_STAT_ENABLE
1840 3898
1841# ifdef _WIN32 3899# ifdef _WIN32
1842# undef lstat 3900# undef lstat
1843# define lstat(a,b) _stati64 (a,b) 3901# define lstat(a,b) _stati64 (a,b)
1844# endif 3902# endif
1845 3903
1846#define DEF_STAT_INTERVAL 5.0074891 3904#define DEF_STAT_INTERVAL 5.0074891
3905#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
1847#define MIN_STAT_INTERVAL 0.1074891 3906#define MIN_STAT_INTERVAL 0.1074891
1848 3907
1849static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3908static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1850 3909
1851#if EV_USE_INOTIFY 3910#if EV_USE_INOTIFY
1852# define EV_INOTIFY_BUFSIZE 8192 3911
3912/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3913# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
1853 3914
1854static void noinline 3915static void noinline
1855infy_add (EV_P_ ev_stat *w) 3916infy_add (EV_P_ ev_stat *w)
1856{ 3917{
1857 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); 3918 w->wd = inotify_add_watch (fs_fd, w->path,
3919 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
3920 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
3921 | IN_DONT_FOLLOW | IN_MASK_ADD);
1858 3922
1859 if (w->wd < 0) 3923 if (w->wd >= 0)
3924 {
3925 struct statfs sfs;
3926
3927 /* now local changes will be tracked by inotify, but remote changes won't */
3928 /* unless the filesystem is known to be local, we therefore still poll */
3929 /* also do poll on <2.6.25, but with normal frequency */
3930
3931 if (!fs_2625)
3932 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3933 else if (!statfs (w->path, &sfs)
3934 && (sfs.f_type == 0x1373 /* devfs */
3935 || sfs.f_type == 0x4006 /* fat */
3936 || sfs.f_type == 0x4d44 /* msdos */
3937 || sfs.f_type == 0xEF53 /* ext2/3 */
3938 || sfs.f_type == 0x72b6 /* jffs2 */
3939 || sfs.f_type == 0x858458f6 /* ramfs */
3940 || sfs.f_type == 0x5346544e /* ntfs */
3941 || sfs.f_type == 0x3153464a /* jfs */
3942 || sfs.f_type == 0x9123683e /* btrfs */
3943 || sfs.f_type == 0x52654973 /* reiser3 */
3944 || sfs.f_type == 0x01021994 /* tmpfs */
3945 || sfs.f_type == 0x58465342 /* xfs */))
3946 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3947 else
3948 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
1860 { 3949 }
1861 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 3950 else
3951 {
3952 /* can't use inotify, continue to stat */
3953 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
1862 3954
1863 /* monitor some parent directory for speedup hints */ 3955 /* if path is not there, monitor some parent directory for speedup hints */
3956 /* note that exceeding the hardcoded path limit is not a correctness issue, */
3957 /* but an efficiency issue only */
1864 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3958 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
1865 { 3959 {
1866 char path [4096]; 3960 char path [4096];
1867 strcpy (path, w->path); 3961 strcpy (path, w->path);
1868 3962
… …
1871 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 3965 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
1872 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 3966 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
1873 3967
1874 char *pend = strrchr (path, '/'); 3968 char *pend = strrchr (path, '/');
1875 3969
1876 if (!pend) 3970 if (!pend || pend == path)
1877 break; /* whoops, no '/', complain to your admin */ 3971 break;
1878 3972
1879 *pend = 0; 3973 *pend = 0;
1880 w->wd = inotify_add_watch (fs_fd, path, mask); 3974 w->wd = inotify_add_watch (fs_fd, path, mask);
1881 } 3975 }
1882 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3976 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
1883 } 3977 }
1884 } 3978 }
1885 else
1886 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
1887 3979
1888 if (w->wd >= 0) 3980 if (w->wd >= 0)
1889 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3981 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
3982
3983 /* now re-arm timer, if required */
3984 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3985 ev_timer_again (EV_A_ &w->timer);
3986 if (ev_is_active (&w->timer)) ev_unref (EV_A);
1890} 3987}
1891 3988
1892static void noinline 3989static void noinline
1893infy_del (EV_P_ ev_stat *w) 3990infy_del (EV_P_ ev_stat *w)
1894{ 3991{
… …
1897 3994
1898 if (wd < 0) 3995 if (wd < 0)
1899 return; 3996 return;
1900 3997
1901 w->wd = -2; 3998 w->wd = -2;
1902 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3999 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
1903 wlist_del (&fs_hash [slot].head, (WL)w); 4000 wlist_del (&fs_hash [slot].head, (WL)w);
1904 4001
1905 /* remove this watcher, if others are watching it, they will rearm */ 4002 /* remove this watcher, if others are watching it, they will rearm */
1906 inotify_rm_watch (fs_fd, wd); 4003 inotify_rm_watch (fs_fd, wd);
1907} 4004}
1908 4005
1909static void noinline 4006static void noinline
1910infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4007infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
1911{ 4008{
1912 if (slot < 0) 4009 if (slot < 0)
1913 /* overflow, need to check for all hahs slots */ 4010 /* overflow, need to check for all hash slots */
1914 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4011 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
1915 infy_wd (EV_A_ slot, wd, ev); 4012 infy_wd (EV_A_ slot, wd, ev);
1916 else 4013 else
1917 { 4014 {
1918 WL w_; 4015 WL w_;
1919 4016
1920 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 4017 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
1921 { 4018 {
1922 ev_stat *w = (ev_stat *)w_; 4019 ev_stat *w = (ev_stat *)w_;
1923 w_ = w_->next; /* lets us remove this watcher and all before it */ 4020 w_ = w_->next; /* lets us remove this watcher and all before it */
1924 4021
1925 if (w->wd == wd || wd == -1) 4022 if (w->wd == wd || wd == -1)
1926 { 4023 {
1927 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 4024 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
1928 { 4025 {
4026 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
1929 w->wd = -1; 4027 w->wd = -1;
1930 infy_add (EV_A_ w); /* re-add, no matter what */ 4028 infy_add (EV_A_ w); /* re-add, no matter what */
1931 } 4029 }
1932 4030
1933 stat_timer_cb (EV_A_ &w->timer, 0); 4031 stat_timer_cb (EV_A_ &w->timer, 0);
… …
1938 4036
1939static void 4037static void
1940infy_cb (EV_P_ ev_io *w, int revents) 4038infy_cb (EV_P_ ev_io *w, int revents)
1941{ 4039{
1942 char buf [EV_INOTIFY_BUFSIZE]; 4040 char buf [EV_INOTIFY_BUFSIZE];
1943 struct inotify_event *ev = (struct inotify_event *)buf;
1944 int ofs; 4041 int ofs;
1945 int len = read (fs_fd, buf, sizeof (buf)); 4042 int len = read (fs_fd, buf, sizeof (buf));
1946 4043
1947 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 4044 for (ofs = 0; ofs < len; )
4045 {
4046 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
1948 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4047 infy_wd (EV_A_ ev->wd, ev->wd, ev);
4048 ofs += sizeof (struct inotify_event) + ev->len;
4049 }
1949} 4050}
1950 4051
1951void inline_size 4052inline_size void ecb_cold
4053ev_check_2625 (EV_P)
4054{
4055 /* kernels < 2.6.25 are borked
4056 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
4057 */
4058 if (ev_linux_version () < 0x020619)
4059 return;
4060
4061 fs_2625 = 1;
4062}
4063
4064inline_size int
4065infy_newfd (void)
4066{
4067#if defined IN_CLOEXEC && defined IN_NONBLOCK
4068 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
4069 if (fd >= 0)
4070 return fd;
4071#endif
4072 return inotify_init ();
4073}
4074
4075inline_size void
1952infy_init (EV_P) 4076infy_init (EV_P)
1953{ 4077{
1954 if (fs_fd != -2) 4078 if (fs_fd != -2)
1955 return; 4079 return;
1956 4080
4081 fs_fd = -1;
4082
4083 ev_check_2625 (EV_A);
4084
1957 fs_fd = inotify_init (); 4085 fs_fd = infy_newfd ();
1958 4086
1959 if (fs_fd >= 0) 4087 if (fs_fd >= 0)
1960 { 4088 {
4089 fd_intern (fs_fd);
1961 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 4090 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
1962 ev_set_priority (&fs_w, EV_MAXPRI); 4091 ev_set_priority (&fs_w, EV_MAXPRI);
1963 ev_io_start (EV_A_ &fs_w); 4092 ev_io_start (EV_A_ &fs_w);
4093 ev_unref (EV_A);
1964 } 4094 }
1965} 4095}
1966 4096
1967void inline_size 4097inline_size void
1968infy_fork (EV_P) 4098infy_fork (EV_P)
1969{ 4099{
1970 int slot; 4100 int slot;
1971 4101
1972 if (fs_fd < 0) 4102 if (fs_fd < 0)
1973 return; 4103 return;
1974 4104
4105 ev_ref (EV_A);
4106 ev_io_stop (EV_A_ &fs_w);
1975 close (fs_fd); 4107 close (fs_fd);
1976 fs_fd = inotify_init (); 4108 fs_fd = infy_newfd ();
1977 4109
4110 if (fs_fd >= 0)
4111 {
4112 fd_intern (fs_fd);
4113 ev_io_set (&fs_w, fs_fd, EV_READ);
4114 ev_io_start (EV_A_ &fs_w);
4115 ev_unref (EV_A);
4116 }
4117
1978 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4118 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
1979 { 4119 {
1980 WL w_ = fs_hash [slot].head; 4120 WL w_ = fs_hash [slot].head;
1981 fs_hash [slot].head = 0; 4121 fs_hash [slot].head = 0;
1982 4122
1983 while (w_) 4123 while (w_)
… …
1988 w->wd = -1; 4128 w->wd = -1;
1989 4129
1990 if (fs_fd >= 0) 4130 if (fs_fd >= 0)
1991 infy_add (EV_A_ w); /* re-add, no matter what */ 4131 infy_add (EV_A_ w); /* re-add, no matter what */
1992 else 4132 else
4133 {
4134 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
4135 if (ev_is_active (&w->timer)) ev_ref (EV_A);
1993 ev_timer_start (EV_A_ &w->timer); 4136 ev_timer_again (EV_A_ &w->timer);
4137 if (ev_is_active (&w->timer)) ev_unref (EV_A);
4138 }
1994 } 4139 }
1995
1996 } 4140 }
1997} 4141}
1998 4142
4143#endif
4144
4145#ifdef _WIN32
4146# define EV_LSTAT(p,b) _stati64 (p, b)
4147#else
4148# define EV_LSTAT(p,b) lstat (p, b)
1999#endif 4149#endif
2000 4150
2001void 4151void
2002ev_stat_stat (EV_P_ ev_stat *w) 4152ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
2003{ 4153{
2004 if (lstat (w->path, &w->attr) < 0) 4154 if (lstat (w->path, &w->attr) < 0)
2005 w->attr.st_nlink = 0; 4155 w->attr.st_nlink = 0;
2006 else if (!w->attr.st_nlink) 4156 else if (!w->attr.st_nlink)
2007 w->attr.st_nlink = 1; 4157 w->attr.st_nlink = 1;
… …
2010static void noinline 4160static void noinline
2011stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4161stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2012{ 4162{
2013 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4163 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2014 4164
2015 /* we copy this here each the time so that */ 4165 ev_statdata prev = w->attr;
2016 /* prev has the old value when the callback gets invoked */
2017 w->prev = w->attr;
2018 ev_stat_stat (EV_A_ w); 4166 ev_stat_stat (EV_A_ w);
2019 4167
2020 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 4168 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2021 if ( 4169 if (
2022 w->prev.st_dev != w->attr.st_dev 4170 prev.st_dev != w->attr.st_dev
2023 || w->prev.st_ino != w->attr.st_ino 4171 || prev.st_ino != w->attr.st_ino
2024 || w->prev.st_mode != w->attr.st_mode 4172 || prev.st_mode != w->attr.st_mode
2025 || w->prev.st_nlink != w->attr.st_nlink 4173 || prev.st_nlink != w->attr.st_nlink
2026 || w->prev.st_uid != w->attr.st_uid 4174 || prev.st_uid != w->attr.st_uid
2027 || w->prev.st_gid != w->attr.st_gid 4175 || prev.st_gid != w->attr.st_gid
2028 || w->prev.st_rdev != w->attr.st_rdev 4176 || prev.st_rdev != w->attr.st_rdev
2029 || w->prev.st_size != w->attr.st_size 4177 || prev.st_size != w->attr.st_size
2030 || w->prev.st_atime != w->attr.st_atime 4178 || prev.st_atime != w->attr.st_atime
2031 || w->prev.st_mtime != w->attr.st_mtime 4179 || prev.st_mtime != w->attr.st_mtime
2032 || w->prev.st_ctime != w->attr.st_ctime 4180 || prev.st_ctime != w->attr.st_ctime
2033 ) { 4181 ) {
4182 /* we only update w->prev on actual differences */
4183 /* in case we test more often than invoke the callback, */
4184 /* to ensure that prev is always different to attr */
4185 w->prev = prev;
4186
2034 #if EV_USE_INOTIFY 4187 #if EV_USE_INOTIFY
4188 if (fs_fd >= 0)
4189 {
2035 infy_del (EV_A_ w); 4190 infy_del (EV_A_ w);
2036 infy_add (EV_A_ w); 4191 infy_add (EV_A_ w);
2037 ev_stat_stat (EV_A_ w); /* avoid race... */ 4192 ev_stat_stat (EV_A_ w); /* avoid race... */
4193 }
2038 #endif 4194 #endif
2039 4195
2040 ev_feed_event (EV_A_ w, EV_STAT); 4196 ev_feed_event (EV_A_ w, EV_STAT);
2041 } 4197 }
2042} 4198}
2043 4199
2044void 4200void
2045ev_stat_start (EV_P_ ev_stat *w) 4201ev_stat_start (EV_P_ ev_stat *w) EV_THROW
2046{ 4202{
2047 if (expect_false (ev_is_active (w))) 4203 if (expect_false (ev_is_active (w)))
2048 return; 4204 return;
2049 4205
2050 /* since we use memcmp, we need to clear any padding data etc. */
2051 memset (&w->prev, 0, sizeof (ev_statdata));
2052 memset (&w->attr, 0, sizeof (ev_statdata));
2053
2054 ev_stat_stat (EV_A_ w); 4206 ev_stat_stat (EV_A_ w);
2055 4207
4208 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2056 if (w->interval < MIN_STAT_INTERVAL) 4209 w->interval = MIN_STAT_INTERVAL;
2057 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2058 4210
2059 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 4211 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2060 ev_set_priority (&w->timer, ev_priority (w)); 4212 ev_set_priority (&w->timer, ev_priority (w));
2061 4213
2062#if EV_USE_INOTIFY 4214#if EV_USE_INOTIFY
2063 infy_init (EV_A); 4215 infy_init (EV_A);
2064 4216
2065 if (fs_fd >= 0) 4217 if (fs_fd >= 0)
2066 infy_add (EV_A_ w); 4218 infy_add (EV_A_ w);
2067 else 4219 else
2068#endif 4220#endif
4221 {
2069 ev_timer_start (EV_A_ &w->timer); 4222 ev_timer_again (EV_A_ &w->timer);
4223 ev_unref (EV_A);
4224 }
2070 4225
2071 ev_start (EV_A_ (W)w, 1); 4226 ev_start (EV_A_ (W)w, 1);
4227
4228 EV_FREQUENT_CHECK;
2072} 4229}
2073 4230
2074void 4231void
2075ev_stat_stop (EV_P_ ev_stat *w) 4232ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
2076{ 4233{
2077 clear_pending (EV_A_ (W)w); 4234 clear_pending (EV_A_ (W)w);
2078 if (expect_false (!ev_is_active (w))) 4235 if (expect_false (!ev_is_active (w)))
2079 return; 4236 return;
2080 4237
4238 EV_FREQUENT_CHECK;
4239
2081#if EV_USE_INOTIFY 4240#if EV_USE_INOTIFY
2082 infy_del (EV_A_ w); 4241 infy_del (EV_A_ w);
2083#endif 4242#endif
4243
4244 if (ev_is_active (&w->timer))
4245 {
4246 ev_ref (EV_A);
2084 ev_timer_stop (EV_A_ &w->timer); 4247 ev_timer_stop (EV_A_ &w->timer);
4248 }
2085 4249
2086 ev_stop (EV_A_ (W)w); 4250 ev_stop (EV_A_ (W)w);
4251
4252 EV_FREQUENT_CHECK;
2087} 4253}
2088#endif 4254#endif
2089 4255
2090#if EV_IDLE_ENABLE 4256#if EV_IDLE_ENABLE
2091void 4257void
2092ev_idle_start (EV_P_ ev_idle *w) 4258ev_idle_start (EV_P_ ev_idle *w) EV_THROW
2093{ 4259{
2094 if (expect_false (ev_is_active (w))) 4260 if (expect_false (ev_is_active (w)))
2095 return; 4261 return;
2096 4262
2097 pri_adjust (EV_A_ (W)w); 4263 pri_adjust (EV_A_ (W)w);
4264
4265 EV_FREQUENT_CHECK;
2098 4266
2099 { 4267 {
2100 int active = ++idlecnt [ABSPRI (w)]; 4268 int active = ++idlecnt [ABSPRI (w)];
2101 4269
2102 ++idleall; 4270 ++idleall;
2103 ev_start (EV_A_ (W)w, active); 4271 ev_start (EV_A_ (W)w, active);
2104 4272
2105 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 4273 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2106 idles [ABSPRI (w)][active - 1] = w; 4274 idles [ABSPRI (w)][active - 1] = w;
2107 } 4275 }
4276
4277 EV_FREQUENT_CHECK;
2108} 4278}
2109 4279
2110void 4280void
2111ev_idle_stop (EV_P_ ev_idle *w) 4281ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
2112{ 4282{
2113 clear_pending (EV_A_ (W)w); 4283 clear_pending (EV_A_ (W)w);
2114 if (expect_false (!ev_is_active (w))) 4284 if (expect_false (!ev_is_active (w)))
2115 return; 4285 return;
2116 4286
4287 EV_FREQUENT_CHECK;
4288
2117 { 4289 {
2118 int active = ((W)w)->active; 4290 int active = ev_active (w);
2119 4291
2120 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]]; 4292 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2121 ((W)idles [ABSPRI (w)][active - 1])->active = active; 4293 ev_active (idles [ABSPRI (w)][active - 1]) = active;
2122 4294
2123 ev_stop (EV_A_ (W)w); 4295 ev_stop (EV_A_ (W)w);
2124 --idleall; 4296 --idleall;
2125 } 4297 }
2126}
2127#endif
2128 4298
4299 EV_FREQUENT_CHECK;
4300}
4301#endif
4302
4303#if EV_PREPARE_ENABLE
2129void 4304void
2130ev_prepare_start (EV_P_ ev_prepare *w) 4305ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
2131{ 4306{
2132 if (expect_false (ev_is_active (w))) 4307 if (expect_false (ev_is_active (w)))
2133 return; 4308 return;
4309
4310 EV_FREQUENT_CHECK;
2134 4311
2135 ev_start (EV_A_ (W)w, ++preparecnt); 4312 ev_start (EV_A_ (W)w, ++preparecnt);
2136 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4313 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2137 prepares [preparecnt - 1] = w; 4314 prepares [preparecnt - 1] = w;
4315
4316 EV_FREQUENT_CHECK;
2138} 4317}
2139 4318
2140void 4319void
2141ev_prepare_stop (EV_P_ ev_prepare *w) 4320ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
2142{ 4321{
2143 clear_pending (EV_A_ (W)w); 4322 clear_pending (EV_A_ (W)w);
2144 if (expect_false (!ev_is_active (w))) 4323 if (expect_false (!ev_is_active (w)))
2145 return; 4324 return;
2146 4325
4326 EV_FREQUENT_CHECK;
4327
2147 { 4328 {
2148 int active = ((W)w)->active; 4329 int active = ev_active (w);
4330
2149 prepares [active - 1] = prepares [--preparecnt]; 4331 prepares [active - 1] = prepares [--preparecnt];
2150 ((W)prepares [active - 1])->active = active; 4332 ev_active (prepares [active - 1]) = active;
2151 } 4333 }
2152 4334
2153 ev_stop (EV_A_ (W)w); 4335 ev_stop (EV_A_ (W)w);
2154}
2155 4336
4337 EV_FREQUENT_CHECK;
4338}
4339#endif
4340
4341#if EV_CHECK_ENABLE
2156void 4342void
2157ev_check_start (EV_P_ ev_check *w) 4343ev_check_start (EV_P_ ev_check *w) EV_THROW
2158{ 4344{
2159 if (expect_false (ev_is_active (w))) 4345 if (expect_false (ev_is_active (w)))
2160 return; 4346 return;
4347
4348 EV_FREQUENT_CHECK;
2161 4349
2162 ev_start (EV_A_ (W)w, ++checkcnt); 4350 ev_start (EV_A_ (W)w, ++checkcnt);
2163 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 4351 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2164 checks [checkcnt - 1] = w; 4352 checks [checkcnt - 1] = w;
4353
4354 EV_FREQUENT_CHECK;
2165} 4355}
2166 4356
2167void 4357void
2168ev_check_stop (EV_P_ ev_check *w) 4358ev_check_stop (EV_P_ ev_check *w) EV_THROW
2169{ 4359{
2170 clear_pending (EV_A_ (W)w); 4360 clear_pending (EV_A_ (W)w);
2171 if (expect_false (!ev_is_active (w))) 4361 if (expect_false (!ev_is_active (w)))
2172 return; 4362 return;
2173 4363
4364 EV_FREQUENT_CHECK;
4365
2174 { 4366 {
2175 int active = ((W)w)->active; 4367 int active = ev_active (w);
4368
2176 checks [active - 1] = checks [--checkcnt]; 4369 checks [active - 1] = checks [--checkcnt];
2177 ((W)checks [active - 1])->active = active; 4370 ev_active (checks [active - 1]) = active;
2178 } 4371 }
2179 4372
2180 ev_stop (EV_A_ (W)w); 4373 ev_stop (EV_A_ (W)w);
4374
4375 EV_FREQUENT_CHECK;
2181} 4376}
4377#endif
2182 4378
2183#if EV_EMBED_ENABLE 4379#if EV_EMBED_ENABLE
2184void noinline 4380void noinline
2185ev_embed_sweep (EV_P_ ev_embed *w) 4381ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
2186{ 4382{
2187 ev_loop (w->other, EVLOOP_NONBLOCK); 4383 ev_run (w->other, EVRUN_NOWAIT);
2188} 4384}
2189 4385
2190static void 4386static void
2191embed_io_cb (EV_P_ ev_io *io, int revents) 4387embed_io_cb (EV_P_ ev_io *io, int revents)
2192{ 4388{
2193 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4389 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2194 4390
2195 if (ev_cb (w)) 4391 if (ev_cb (w))
2196 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4392 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2197 else 4393 else
2198 ev_embed_sweep (loop, w); 4394 ev_run (w->other, EVRUN_NOWAIT);
2199} 4395}
2200 4396
2201static void 4397static void
2202embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4398embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2203{ 4399{
2204 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 4400 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2205 4401
2206 fd_reify (w->other); 4402 {
4403 EV_P = w->other;
4404
4405 while (fdchangecnt)
4406 {
4407 fd_reify (EV_A);
4408 ev_run (EV_A_ EVRUN_NOWAIT);
4409 }
4410 }
2207} 4411}
4412
4413static void
4414embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
4415{
4416 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
4417
4418 ev_embed_stop (EV_A_ w);
4419
4420 {
4421 EV_P = w->other;
4422
4423 ev_loop_fork (EV_A);
4424 ev_run (EV_A_ EVRUN_NOWAIT);
4425 }
4426
4427 ev_embed_start (EV_A_ w);
4428}
4429
4430#if 0
4431static void
4432embed_idle_cb (EV_P_ ev_idle *idle, int revents)
4433{
4434 ev_idle_stop (EV_A_ idle);
4435}
4436#endif
2208 4437
2209void 4438void
2210ev_embed_start (EV_P_ ev_embed *w) 4439ev_embed_start (EV_P_ ev_embed *w) EV_THROW
2211{ 4440{
2212 if (expect_false (ev_is_active (w))) 4441 if (expect_false (ev_is_active (w)))
2213 return; 4442 return;
2214 4443
2215 { 4444 {
2216 struct ev_loop *loop = w->other; 4445 EV_P = w->other;
2217 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4446 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2218 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 4447 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2219 } 4448 }
4449
4450 EV_FREQUENT_CHECK;
2220 4451
2221 ev_set_priority (&w->io, ev_priority (w)); 4452 ev_set_priority (&w->io, ev_priority (w));
2222 ev_io_start (EV_A_ &w->io); 4453 ev_io_start (EV_A_ &w->io);
2223 4454
2224 ev_prepare_init (&w->prepare, embed_prepare_cb); 4455 ev_prepare_init (&w->prepare, embed_prepare_cb);
2225 ev_set_priority (&w->prepare, EV_MINPRI); 4456 ev_set_priority (&w->prepare, EV_MINPRI);
2226 ev_prepare_start (EV_A_ &w->prepare); 4457 ev_prepare_start (EV_A_ &w->prepare);
2227 4458
4459 ev_fork_init (&w->fork, embed_fork_cb);
4460 ev_fork_start (EV_A_ &w->fork);
4461
4462 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
4463
2228 ev_start (EV_A_ (W)w, 1); 4464 ev_start (EV_A_ (W)w, 1);
4465
4466 EV_FREQUENT_CHECK;
2229} 4467}
2230 4468
2231void 4469void
2232ev_embed_stop (EV_P_ ev_embed *w) 4470ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
2233{ 4471{
2234 clear_pending (EV_A_ (W)w); 4472 clear_pending (EV_A_ (W)w);
2235 if (expect_false (!ev_is_active (w))) 4473 if (expect_false (!ev_is_active (w)))
2236 return; 4474 return;
2237 4475
4476 EV_FREQUENT_CHECK;
4477
2238 ev_io_stop (EV_A_ &w->io); 4478 ev_io_stop (EV_A_ &w->io);
2239 ev_prepare_stop (EV_A_ &w->prepare); 4479 ev_prepare_stop (EV_A_ &w->prepare);
4480 ev_fork_stop (EV_A_ &w->fork);
2240 4481
2241 ev_stop (EV_A_ (W)w); 4482 ev_stop (EV_A_ (W)w);
4483
4484 EV_FREQUENT_CHECK;
2242} 4485}
2243#endif 4486#endif
2244 4487
2245#if EV_FORK_ENABLE 4488#if EV_FORK_ENABLE
2246void 4489void
2247ev_fork_start (EV_P_ ev_fork *w) 4490ev_fork_start (EV_P_ ev_fork *w) EV_THROW
2248{ 4491{
2249 if (expect_false (ev_is_active (w))) 4492 if (expect_false (ev_is_active (w)))
2250 return; 4493 return;
4494
4495 EV_FREQUENT_CHECK;
2251 4496
2252 ev_start (EV_A_ (W)w, ++forkcnt); 4497 ev_start (EV_A_ (W)w, ++forkcnt);
2253 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 4498 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2254 forks [forkcnt - 1] = w; 4499 forks [forkcnt - 1] = w;
4500
4501 EV_FREQUENT_CHECK;
2255} 4502}
2256 4503
2257void 4504void
2258ev_fork_stop (EV_P_ ev_fork *w) 4505ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
2259{ 4506{
2260 clear_pending (EV_A_ (W)w); 4507 clear_pending (EV_A_ (W)w);
2261 if (expect_false (!ev_is_active (w))) 4508 if (expect_false (!ev_is_active (w)))
2262 return; 4509 return;
2263 4510
4511 EV_FREQUENT_CHECK;
4512
2264 { 4513 {
2265 int active = ((W)w)->active; 4514 int active = ev_active (w);
4515
2266 forks [active - 1] = forks [--forkcnt]; 4516 forks [active - 1] = forks [--forkcnt];
2267 ((W)forks [active - 1])->active = active; 4517 ev_active (forks [active - 1]) = active;
2268 } 4518 }
2269 4519
2270 ev_stop (EV_A_ (W)w); 4520 ev_stop (EV_A_ (W)w);
4521
4522 EV_FREQUENT_CHECK;
4523}
4524#endif
4525
4526#if EV_CLEANUP_ENABLE
4527void
4528ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
4529{
4530 if (expect_false (ev_is_active (w)))
4531 return;
4532
4533 EV_FREQUENT_CHECK;
4534
4535 ev_start (EV_A_ (W)w, ++cleanupcnt);
4536 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4537 cleanups [cleanupcnt - 1] = w;
4538
4539 /* cleanup watchers should never keep a refcount on the loop */
4540 ev_unref (EV_A);
4541 EV_FREQUENT_CHECK;
4542}
4543
4544void
4545ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4546{
4547 clear_pending (EV_A_ (W)w);
4548 if (expect_false (!ev_is_active (w)))
4549 return;
4550
4551 EV_FREQUENT_CHECK;
4552 ev_ref (EV_A);
4553
4554 {
4555 int active = ev_active (w);
4556
4557 cleanups [active - 1] = cleanups [--cleanupcnt];
4558 ev_active (cleanups [active - 1]) = active;
4559 }
4560
4561 ev_stop (EV_A_ (W)w);
4562
4563 EV_FREQUENT_CHECK;
4564}
4565#endif
4566
4567#if EV_ASYNC_ENABLE
4568void
4569ev_async_start (EV_P_ ev_async *w) EV_THROW
4570{
4571 if (expect_false (ev_is_active (w)))
4572 return;
4573
4574 w->sent = 0;
4575
4576 evpipe_init (EV_A);
4577
4578 EV_FREQUENT_CHECK;
4579
4580 ev_start (EV_A_ (W)w, ++asynccnt);
4581 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
4582 asyncs [asynccnt - 1] = w;
4583
4584 EV_FREQUENT_CHECK;
4585}
4586
4587void
4588ev_async_stop (EV_P_ ev_async *w) EV_THROW
4589{
4590 clear_pending (EV_A_ (W)w);
4591 if (expect_false (!ev_is_active (w)))
4592 return;
4593
4594 EV_FREQUENT_CHECK;
4595
4596 {
4597 int active = ev_active (w);
4598
4599 asyncs [active - 1] = asyncs [--asynccnt];
4600 ev_active (asyncs [active - 1]) = active;
4601 }
4602
4603 ev_stop (EV_A_ (W)w);
4604
4605 EV_FREQUENT_CHECK;
4606}
4607
4608void
4609ev_async_send (EV_P_ ev_async *w) EV_THROW
4610{
4611 w->sent = 1;
4612 evpipe_write (EV_A_ &async_pending);
2271} 4613}
2272#endif 4614#endif
2273 4615
2274/*****************************************************************************/ 4616/*****************************************************************************/
2275 4617
… …
2285once_cb (EV_P_ struct ev_once *once, int revents) 4627once_cb (EV_P_ struct ev_once *once, int revents)
2286{ 4628{
2287 void (*cb)(int revents, void *arg) = once->cb; 4629 void (*cb)(int revents, void *arg) = once->cb;
2288 void *arg = once->arg; 4630 void *arg = once->arg;
2289 4631
2290 ev_io_stop (EV_A_ &once->io); 4632 ev_io_stop (EV_A_ &once->io);
2291 ev_timer_stop (EV_A_ &once->to); 4633 ev_timer_stop (EV_A_ &once->to);
2292 ev_free (once); 4634 ev_free (once);
2293 4635
2294 cb (revents, arg); 4636 cb (revents, arg);
2295} 4637}
2296 4638
2297static void 4639static void
2298once_cb_io (EV_P_ ev_io *w, int revents) 4640once_cb_io (EV_P_ ev_io *w, int revents)
2299{ 4641{
2300 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 4642 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
4643
4644 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2301} 4645}
2302 4646
2303static void 4647static void
2304once_cb_to (EV_P_ ev_timer *w, int revents) 4648once_cb_to (EV_P_ ev_timer *w, int revents)
2305{ 4649{
2306 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 4650 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
4651
4652 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2307} 4653}
2308 4654
2309void 4655void
2310ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4656ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
2311{ 4657{
2312 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4658 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
2313 4659
2314 if (expect_false (!once)) 4660 if (expect_false (!once))
2315 { 4661 {
2316 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 4662 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
2317 return; 4663 return;
2318 } 4664 }
2319 4665
2320 once->cb = cb; 4666 once->cb = cb;
2321 once->arg = arg; 4667 once->arg = arg;
… …
2333 ev_timer_set (&once->to, timeout, 0.); 4679 ev_timer_set (&once->to, timeout, 0.);
2334 ev_timer_start (EV_A_ &once->to); 4680 ev_timer_start (EV_A_ &once->to);
2335 } 4681 }
2336} 4682}
2337 4683
4684/*****************************************************************************/
4685
4686#if EV_WALK_ENABLE
4687void ecb_cold
4688ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
4689{
4690 int i, j;
4691 ev_watcher_list *wl, *wn;
4692
4693 if (types & (EV_IO | EV_EMBED))
4694 for (i = 0; i < anfdmax; ++i)
4695 for (wl = anfds [i].head; wl; )
4696 {
4697 wn = wl->next;
4698
4699#if EV_EMBED_ENABLE
4700 if (ev_cb ((ev_io *)wl) == embed_io_cb)
4701 {
4702 if (types & EV_EMBED)
4703 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
4704 }
4705 else
4706#endif
4707#if EV_USE_INOTIFY
4708 if (ev_cb ((ev_io *)wl) == infy_cb)
4709 ;
4710 else
4711#endif
4712 if ((ev_io *)wl != &pipe_w)
4713 if (types & EV_IO)
4714 cb (EV_A_ EV_IO, wl);
4715
4716 wl = wn;
4717 }
4718
4719 if (types & (EV_TIMER | EV_STAT))
4720 for (i = timercnt + HEAP0; i-- > HEAP0; )
4721#if EV_STAT_ENABLE
4722 /*TODO: timer is not always active*/
4723 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
4724 {
4725 if (types & EV_STAT)
4726 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
4727 }
4728 else
4729#endif
4730 if (types & EV_TIMER)
4731 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
4732
4733#if EV_PERIODIC_ENABLE
4734 if (types & EV_PERIODIC)
4735 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
4736 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
4737#endif
4738
4739#if EV_IDLE_ENABLE
4740 if (types & EV_IDLE)
4741 for (j = NUMPRI; j--; )
4742 for (i = idlecnt [j]; i--; )
4743 cb (EV_A_ EV_IDLE, idles [j][i]);
4744#endif
4745
4746#if EV_FORK_ENABLE
4747 if (types & EV_FORK)
4748 for (i = forkcnt; i--; )
4749 if (ev_cb (forks [i]) != embed_fork_cb)
4750 cb (EV_A_ EV_FORK, forks [i]);
4751#endif
4752
4753#if EV_ASYNC_ENABLE
4754 if (types & EV_ASYNC)
4755 for (i = asynccnt; i--; )
4756 cb (EV_A_ EV_ASYNC, asyncs [i]);
4757#endif
4758
4759#if EV_PREPARE_ENABLE
4760 if (types & EV_PREPARE)
4761 for (i = preparecnt; i--; )
4762# if EV_EMBED_ENABLE
4763 if (ev_cb (prepares [i]) != embed_prepare_cb)
4764# endif
4765 cb (EV_A_ EV_PREPARE, prepares [i]);
4766#endif
4767
4768#if EV_CHECK_ENABLE
4769 if (types & EV_CHECK)
4770 for (i = checkcnt; i--; )
4771 cb (EV_A_ EV_CHECK, checks [i]);
4772#endif
4773
4774#if EV_SIGNAL_ENABLE
4775 if (types & EV_SIGNAL)
4776 for (i = 0; i < EV_NSIG - 1; ++i)
4777 for (wl = signals [i].head; wl; )
4778 {
4779 wn = wl->next;
4780 cb (EV_A_ EV_SIGNAL, wl);
4781 wl = wn;
4782 }
4783#endif
4784
4785#if EV_CHILD_ENABLE
4786 if (types & EV_CHILD)
4787 for (i = (EV_PID_HASHSIZE); i--; )
4788 for (wl = childs [i]; wl; )
4789 {
4790 wn = wl->next;
4791 cb (EV_A_ EV_CHILD, wl);
4792 wl = wn;
4793 }
4794#endif
4795/* EV_STAT 0x00001000 /* stat data changed */
4796/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
4797}
4798#endif
4799
2338#if EV_MULTIPLICITY 4800#if EV_MULTIPLICITY
2339 #include "ev_wrap.h" 4801 #include "ev_wrap.h"
2340#endif 4802#endif
2341 4803
2342#ifdef __cplusplus
2343}
2344#endif
2345

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